Hi Trond, Anna,
Here's a set of patches that converts NFS to use the mount API. Note that
there are a lot of preliminary patches, some from David and some from Al.
The final patch (the one that does the actual conversion) from the David's
initial posting has been split into 5 separate patches, and the entire set
has been rebased on top of 5.4-rc8.
Changes since v4:
- further split the original "NFS: Add fs_context support" patch (new
patch is about 25% smaller than the v4 patch)
- fixed NFSv4 referral mounts (broken in the original patch)
- fixed leak of nfs_fattr when fs_context is freed
Changes since v3:
- changed license and copyright text in fs/nfs/fs_context.c
Changes since v2:
- fixed the conversion of the nconnect= option
- added '#if IS_ENABLED(CONFIG_NFS_V4)' around nfs4_parse_monolithic()
to avoid unused-function warning when compiling with v4 disabled
Chagnes since v1:
- split up patch 23 into 4 separate patches
-Scott
Al Viro (15):
saner calling conventions for nfs_fs_mount_common()
nfs: stash server into struct nfs_mount_info
nfs: lift setting mount_info from nfs4_remote{,_referral}_mount
nfs: fold nfs4_remote_fs_type and nfs4_remote_referral_fs_type
nfs: don't bother setting/restoring export_path around
do_nfs_root_mount()
nfs4: fold nfs_do_root_mount/nfs_follow_remote_path
nfs: lift setting mount_info from nfs_xdev_mount()
nfs: stash nfs_subversion reference into nfs_mount_info
nfs: don't bother passing nfs_subversion to ->try_mount() and
nfs_fs_mount_common()
nfs: merge xdev and remote file_system_type
nfs: unexport nfs_fs_mount_common()
nfs: don't pass nfs_subversion to ->create_server()
nfs: get rid of mount_info ->fill_super()
nfs_clone_sb_security(): simplify the check for server bogosity
nfs: get rid of ->set_security()
David Howells (8):
NFS: Move mount parameterisation bits into their own file
NFS: Constify mount argument match tables
NFS: Rename struct nfs_parsed_mount_data to struct nfs_fs_context
NFS: Split nfs_parse_mount_options()
NFS: Deindent nfs_fs_context_parse_option()
NFS: Add a small buffer in nfs_fs_context to avoid string dup
NFS: Do some tidying of the parsing code
NFS: Add fs_context support.
Scott Mayhew (4):
NFS: rename nfs_fs_context pointer arg in a few functions
NFS: Convert mount option parsing to use functionality from
fs_parser.h
NFS: Additional refactoring for fs_context conversion
NFS: Attach supplementary error information to fs_context.
fs/nfs/Makefile | 2 +-
fs/nfs/client.c | 80 +-
fs/nfs/fs_context.c | 1424 +++++++++++++++++++++++++
fs/nfs/fscache.c | 2 +-
fs/nfs/getroot.c | 73 +-
fs/nfs/internal.h | 132 +--
fs/nfs/namespace.c | 144 ++-
fs/nfs/nfs3_fs.h | 2 +-
fs/nfs/nfs3client.c | 6 +-
fs/nfs/nfs3proc.c | 2 +-
fs/nfs/nfs4_fs.h | 9 +-
fs/nfs/nfs4client.c | 99 +-
fs/nfs/nfs4namespace.c | 291 ++---
fs/nfs/nfs4proc.c | 2 +-
fs/nfs/nfs4super.c | 257 ++---
fs/nfs/proc.c | 2 +-
fs/nfs/super.c | 2219 +++++----------------------------------
include/linux/nfs_xdr.h | 9 +-
18 files changed, 2283 insertions(+), 2472 deletions(-)
create mode 100644 fs/nfs/fs_context.c
--
2.17.2
From: Al Viro <[email protected]>
The only possible values are nfs_fill_super and nfs_clone_super. The
latter is used only when crossing into a submount and it is almost
identical to the former; the only differences are
* ->s_time_gran unconditionally set to 1 (even for v2 mounts).
Regression dating back to 2012, actually.
* ->s_blocksize/->s_blocksize_bits set to that of parent.
Rather than messing with the method, stash ->s_blocksize_bits in
mount_info in submount case and after the (now unconditional)
call of nfs_fill_super() override ->s_blocksize/->s_blocksize_bits
if that has been set.
Reviewed-by: David Howells <[email protected]>
Signed-off-by: Al Viro <[email protected]>
---
fs/nfs/internal.h | 4 +--
fs/nfs/namespace.c | 2 +-
fs/nfs/nfs4super.c | 1 -
fs/nfs/super.c | 75 ++++++++++------------------------------------
4 files changed, 18 insertions(+), 64 deletions(-)
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index e4f8a4734a2e..f64337a6d229 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -136,7 +136,7 @@ struct nfs_mount_request {
};
struct nfs_mount_info {
- void (*fill_super)(struct super_block *, struct nfs_mount_info *);
+ unsigned int inherited_bsize;
int (*set_security)(struct super_block *, struct dentry *, struct nfs_mount_info *);
struct nfs_parsed_mount_data *parsed;
struct nfs_clone_mount *cloned;
@@ -395,8 +395,6 @@ int nfs_set_sb_security(struct super_block *, struct dentry *, struct nfs_mount_
int nfs_clone_sb_security(struct super_block *, struct dentry *, struct nfs_mount_info *);
struct dentry *nfs_fs_mount(struct file_system_type *, int, const char *, void *);
void nfs_kill_super(struct super_block *);
-void nfs_fill_super(struct super_block *, struct nfs_mount_info *);
-void nfs_clone_super(struct super_block *, struct nfs_mount_info *);
extern struct rpc_stat nfs_rpcstat;
diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c
index 970f92a860ed..7bc5b9b8f5ea 100644
--- a/fs/nfs/namespace.c
+++ b/fs/nfs/namespace.c
@@ -229,7 +229,7 @@ struct vfsmount *nfs_do_submount(struct dentry *dentry, struct nfs_fh *fh,
.authflavor = authflavor,
};
struct nfs_mount_info mount_info = {
- .fill_super = nfs_clone_super,
+ .inherited_bsize = sb->s_blocksize_bits,
.set_security = nfs_clone_sb_security,
.cloned = &mountdata,
.mntfh = fh,
diff --git a/fs/nfs/nfs4super.c b/fs/nfs/nfs4super.c
index b6cf62125380..d387c3c3b600 100644
--- a/fs/nfs/nfs4super.c
+++ b/fs/nfs/nfs4super.c
@@ -224,7 +224,6 @@ static struct dentry *nfs4_referral_mount(struct file_system_type *fs_type,
{
struct nfs_clone_mount *data = raw_data;
struct nfs_mount_info mount_info = {
- .fill_super = nfs_fill_super,
.set_security = nfs_clone_sb_security,
.cloned = data,
.nfs_mod = &nfs_v4,
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 691cd93c8a2f..d8b53fcaa60e 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -2339,29 +2339,9 @@ nfs_remount(struct super_block *sb, int *flags, char *raw_data)
EXPORT_SYMBOL_GPL(nfs_remount);
/*
- * Initialise the common bits of the superblock
+ * Finish setting up an NFS superblock
*/
-static void nfs_initialise_sb(struct super_block *sb)
-{
- struct nfs_server *server = NFS_SB(sb);
-
- sb->s_magic = NFS_SUPER_MAGIC;
-
- /* We probably want something more informative here */
- snprintf(sb->s_id, sizeof(sb->s_id),
- "%u:%u", MAJOR(sb->s_dev), MINOR(sb->s_dev));
-
- if (sb->s_blocksize == 0)
- sb->s_blocksize = nfs_block_bits(server->wsize,
- &sb->s_blocksize_bits);
-
- nfs_super_set_maxbytes(sb, server->maxfilesize);
-}
-
-/*
- * Finish setting up an NFS2/3 superblock
- */
-void nfs_fill_super(struct super_block *sb, struct nfs_mount_info *mount_info)
+static void nfs_fill_super(struct super_block *sb, struct nfs_mount_info *mount_info)
{
struct nfs_parsed_mount_data *data = mount_info->parsed;
struct nfs_server *server = NFS_SB(sb);
@@ -2391,44 +2371,17 @@ void nfs_fill_super(struct super_block *sb, struct nfs_mount_info *mount_info)
sb->s_time_max = S64_MAX;
}
- nfs_initialise_sb(sb);
-}
-EXPORT_SYMBOL_GPL(nfs_fill_super);
-
-/*
- * Finish setting up a cloned NFS2/3/4 superblock
- */
-void nfs_clone_super(struct super_block *sb,
- struct nfs_mount_info *mount_info)
-{
- const struct super_block *old_sb = mount_info->cloned->sb;
- struct nfs_server *server = NFS_SB(sb);
-
- sb->s_blocksize_bits = old_sb->s_blocksize_bits;
- sb->s_blocksize = old_sb->s_blocksize;
- sb->s_maxbytes = old_sb->s_maxbytes;
- sb->s_xattr = old_sb->s_xattr;
- sb->s_op = old_sb->s_op;
- sb->s_export_op = old_sb->s_export_op;
+ sb->s_magic = NFS_SUPER_MAGIC;
- if (server->nfs_client->rpc_ops->version != 2) {
- /* The VFS shouldn't apply the umask to mode bits. We will do
- * so ourselves when necessary.
- */
- sb->s_flags |= SB_POSIXACL;
- sb->s_time_gran = 1;
- } else
- sb->s_time_gran = 1000;
+ /* We probably want something more informative here */
+ snprintf(sb->s_id, sizeof(sb->s_id),
+ "%u:%u", MAJOR(sb->s_dev), MINOR(sb->s_dev));
- if (server->nfs_client->rpc_ops->version != 4) {
- sb->s_time_min = 0;
- sb->s_time_max = U32_MAX;
- } else {
- sb->s_time_min = S64_MIN;
- sb->s_time_max = S64_MAX;
- }
+ if (sb->s_blocksize == 0)
+ sb->s_blocksize = nfs_block_bits(server->wsize,
+ &sb->s_blocksize_bits);
- nfs_initialise_sb(sb);
+ nfs_super_set_maxbytes(sb, server->maxfilesize);
}
static int nfs_compare_mount_options(const struct super_block *s, const struct nfs_server *b, int flags)
@@ -2701,8 +2654,13 @@ static struct dentry *nfs_fs_mount_common(int flags, const char *dev_name,
}
if (!s->s_root) {
+ unsigned bsize = mount_info->inherited_bsize;
/* initial superblock/root creation */
- mount_info->fill_super(s, mount_info);
+ nfs_fill_super(s, mount_info);
+ if (bsize) {
+ s->s_blocksize_bits = bsize;
+ s->s_blocksize = 1U << bsize;
+ }
nfs_get_cache_cookie(s, mount_info->parsed, mount_info->cloned);
if (!(server->flags & NFS_MOUNT_UNSHARED))
s->s_iflags |= SB_I_MULTIROOT;
@@ -2737,7 +2695,6 @@ struct dentry *nfs_fs_mount(struct file_system_type *fs_type,
int flags, const char *dev_name, void *raw_data)
{
struct nfs_mount_info mount_info = {
- .fill_super = nfs_fill_super,
.set_security = nfs_set_sb_security,
};
struct dentry *mntroot = ERR_PTR(-ENOMEM);
--
2.17.2
From: David Howells <[email protected]>
Split various bits relating to mount parameterisation out from
fs/nfs/super.c into their own file to form the basis of filesystem context
handling for NFS.
No other changes are made to the code beyond removing 'static' qualifiers.
Signed-off-by: David Howells <[email protected]>
Signed-off-by: Al Viro <[email protected]>
---
fs/nfs/Makefile | 2 +-
fs/nfs/fs_context.c | 1414 +++++++++++++++++++++++++++++++++++++++++++
fs/nfs/internal.h | 30 +
fs/nfs/super.c | 1411 ------------------------------------------
4 files changed, 1445 insertions(+), 1412 deletions(-)
create mode 100644 fs/nfs/fs_context.c
diff --git a/fs/nfs/Makefile b/fs/nfs/Makefile
index 34cdeaecccf6..2433c3e03cfa 100644
--- a/fs/nfs/Makefile
+++ b/fs/nfs/Makefile
@@ -9,7 +9,7 @@ CFLAGS_nfstrace.o += -I$(src)
nfs-y := client.o dir.o file.o getroot.o inode.o super.o \
io.o direct.o pagelist.o read.o symlink.o unlink.o \
write.o namespace.o mount_clnt.o nfstrace.o \
- export.o sysfs.o
+ export.o sysfs.o fs_context.o
nfs-$(CONFIG_ROOT_NFS) += nfsroot.o
nfs-$(CONFIG_SYSCTL) += sysctl.o
nfs-$(CONFIG_NFS_FSCACHE) += fscache.o fscache-index.o
diff --git a/fs/nfs/fs_context.c b/fs/nfs/fs_context.c
new file mode 100644
index 000000000000..3a34c8437917
--- /dev/null
+++ b/fs/nfs/fs_context.c
@@ -0,0 +1,1414 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * linux/fs/nfs/fs_context.c
+ *
+ * Copyright (C) 1992 Rick Sladkey
+ *
+ * NFS mount handling.
+ *
+ * Split from fs/nfs/super.c by David Howells <[email protected]>
+ */
+
+#include <linux/module.h>
+#include <linux/fs.h>
+#include <linux/parser.h>
+#include <linux/nfs_fs.h>
+#include <linux/nfs_mount.h>
+#include <linux/nfs4_mount.h>
+#include "nfs.h"
+#include "internal.h"
+
+#define NFSDBG_FACILITY NFSDBG_MOUNT
+
+#if IS_ENABLED(CONFIG_NFS_V3)
+#define NFS_DEFAULT_VERSION 3
+#else
+#define NFS_DEFAULT_VERSION 2
+#endif
+
+#define NFS_MAX_CONNECTIONS 16
+
+enum {
+ /* Mount options that take no arguments */
+ Opt_soft, Opt_softerr, Opt_hard,
+ Opt_posix, Opt_noposix,
+ Opt_cto, Opt_nocto,
+ Opt_ac, Opt_noac,
+ Opt_lock, Opt_nolock,
+ Opt_udp, Opt_tcp, Opt_rdma,
+ Opt_acl, Opt_noacl,
+ Opt_rdirplus, Opt_nordirplus,
+ Opt_sharecache, Opt_nosharecache,
+ Opt_resvport, Opt_noresvport,
+ Opt_fscache, Opt_nofscache,
+ Opt_migration, Opt_nomigration,
+
+ /* Mount options that take integer arguments */
+ Opt_port,
+ Opt_rsize, Opt_wsize, Opt_bsize,
+ Opt_timeo, Opt_retrans,
+ Opt_acregmin, Opt_acregmax,
+ Opt_acdirmin, Opt_acdirmax,
+ Opt_actimeo,
+ Opt_namelen,
+ Opt_mountport,
+ Opt_mountvers,
+ Opt_minorversion,
+
+ /* Mount options that take string arguments */
+ Opt_nfsvers,
+ Opt_sec, Opt_proto, Opt_mountproto, Opt_mounthost,
+ Opt_addr, Opt_mountaddr, Opt_clientaddr,
+ Opt_nconnect,
+ Opt_lookupcache,
+ Opt_fscache_uniq,
+ Opt_local_lock,
+
+ /* Special mount options */
+ Opt_userspace, Opt_deprecated, Opt_sloppy,
+
+ Opt_err
+};
+
+static const match_table_t nfs_mount_option_tokens = {
+ { Opt_userspace, "bg" },
+ { Opt_userspace, "fg" },
+ { Opt_userspace, "retry=%s" },
+
+ { Opt_sloppy, "sloppy" },
+
+ { Opt_soft, "soft" },
+ { Opt_softerr, "softerr" },
+ { Opt_hard, "hard" },
+ { Opt_deprecated, "intr" },
+ { Opt_deprecated, "nointr" },
+ { Opt_posix, "posix" },
+ { Opt_noposix, "noposix" },
+ { Opt_cto, "cto" },
+ { Opt_nocto, "nocto" },
+ { Opt_ac, "ac" },
+ { Opt_noac, "noac" },
+ { Opt_lock, "lock" },
+ { Opt_nolock, "nolock" },
+ { Opt_udp, "udp" },
+ { Opt_tcp, "tcp" },
+ { Opt_rdma, "rdma" },
+ { Opt_acl, "acl" },
+ { Opt_noacl, "noacl" },
+ { Opt_rdirplus, "rdirplus" },
+ { Opt_nordirplus, "nordirplus" },
+ { Opt_sharecache, "sharecache" },
+ { Opt_nosharecache, "nosharecache" },
+ { Opt_resvport, "resvport" },
+ { Opt_noresvport, "noresvport" },
+ { Opt_fscache, "fsc" },
+ { Opt_nofscache, "nofsc" },
+ { Opt_migration, "migration" },
+ { Opt_nomigration, "nomigration" },
+
+ { Opt_port, "port=%s" },
+ { Opt_rsize, "rsize=%s" },
+ { Opt_wsize, "wsize=%s" },
+ { Opt_bsize, "bsize=%s" },
+ { Opt_timeo, "timeo=%s" },
+ { Opt_retrans, "retrans=%s" },
+ { Opt_acregmin, "acregmin=%s" },
+ { Opt_acregmax, "acregmax=%s" },
+ { Opt_acdirmin, "acdirmin=%s" },
+ { Opt_acdirmax, "acdirmax=%s" },
+ { Opt_actimeo, "actimeo=%s" },
+ { Opt_namelen, "namlen=%s" },
+ { Opt_mountport, "mountport=%s" },
+ { Opt_mountvers, "mountvers=%s" },
+ { Opt_minorversion, "minorversion=%s" },
+
+ { Opt_nfsvers, "nfsvers=%s" },
+ { Opt_nfsvers, "vers=%s" },
+
+ { Opt_sec, "sec=%s" },
+ { Opt_proto, "proto=%s" },
+ { Opt_mountproto, "mountproto=%s" },
+ { Opt_addr, "addr=%s" },
+ { Opt_clientaddr, "clientaddr=%s" },
+ { Opt_mounthost, "mounthost=%s" },
+ { Opt_mountaddr, "mountaddr=%s" },
+
+ { Opt_nconnect, "nconnect=%s" },
+
+ { Opt_lookupcache, "lookupcache=%s" },
+ { Opt_fscache_uniq, "fsc=%s" },
+ { Opt_local_lock, "local_lock=%s" },
+
+ /* The following needs to be listed after all other options */
+ { Opt_nfsvers, "v%s" },
+
+ { Opt_err, NULL }
+};
+
+enum {
+ Opt_xprt_udp, Opt_xprt_udp6, Opt_xprt_tcp, Opt_xprt_tcp6, Opt_xprt_rdma,
+ Opt_xprt_rdma6,
+
+ Opt_xprt_err
+};
+
+static const match_table_t nfs_xprt_protocol_tokens = {
+ { Opt_xprt_udp, "udp" },
+ { Opt_xprt_udp6, "udp6" },
+ { Opt_xprt_tcp, "tcp" },
+ { Opt_xprt_tcp6, "tcp6" },
+ { Opt_xprt_rdma, "rdma" },
+ { Opt_xprt_rdma6, "rdma6" },
+
+ { Opt_xprt_err, NULL }
+};
+
+enum {
+ Opt_sec_none, Opt_sec_sys,
+ Opt_sec_krb5, Opt_sec_krb5i, Opt_sec_krb5p,
+ Opt_sec_lkey, Opt_sec_lkeyi, Opt_sec_lkeyp,
+ Opt_sec_spkm, Opt_sec_spkmi, Opt_sec_spkmp,
+
+ Opt_sec_err
+};
+
+static const match_table_t nfs_secflavor_tokens = {
+ { Opt_sec_none, "none" },
+ { Opt_sec_none, "null" },
+ { Opt_sec_sys, "sys" },
+
+ { Opt_sec_krb5, "krb5" },
+ { Opt_sec_krb5i, "krb5i" },
+ { Opt_sec_krb5p, "krb5p" },
+
+ { Opt_sec_lkey, "lkey" },
+ { Opt_sec_lkeyi, "lkeyi" },
+ { Opt_sec_lkeyp, "lkeyp" },
+
+ { Opt_sec_spkm, "spkm3" },
+ { Opt_sec_spkmi, "spkm3i" },
+ { Opt_sec_spkmp, "spkm3p" },
+
+ { Opt_sec_err, NULL }
+};
+
+enum {
+ Opt_lookupcache_all, Opt_lookupcache_positive,
+ Opt_lookupcache_none,
+
+ Opt_lookupcache_err
+};
+
+static match_table_t nfs_lookupcache_tokens = {
+ { Opt_lookupcache_all, "all" },
+ { Opt_lookupcache_positive, "pos" },
+ { Opt_lookupcache_positive, "positive" },
+ { Opt_lookupcache_none, "none" },
+
+ { Opt_lookupcache_err, NULL }
+};
+
+enum {
+ Opt_local_lock_all, Opt_local_lock_flock, Opt_local_lock_posix,
+ Opt_local_lock_none,
+
+ Opt_local_lock_err
+};
+
+static match_table_t nfs_local_lock_tokens = {
+ { Opt_local_lock_all, "all" },
+ { Opt_local_lock_flock, "flock" },
+ { Opt_local_lock_posix, "posix" },
+ { Opt_local_lock_none, "none" },
+
+ { Opt_local_lock_err, NULL }
+};
+
+enum {
+ Opt_vers_2, Opt_vers_3, Opt_vers_4, Opt_vers_4_0,
+ Opt_vers_4_1, Opt_vers_4_2,
+
+ Opt_vers_err
+};
+
+static match_table_t nfs_vers_tokens = {
+ { Opt_vers_2, "2" },
+ { Opt_vers_3, "3" },
+ { Opt_vers_4, "4" },
+ { Opt_vers_4_0, "4.0" },
+ { Opt_vers_4_1, "4.1" },
+ { Opt_vers_4_2, "4.2" },
+
+ { Opt_vers_err, NULL }
+};
+
+struct nfs_parsed_mount_data *nfs_alloc_parsed_mount_data(void)
+{
+ struct nfs_parsed_mount_data *data;
+
+ data = kzalloc(sizeof(*data), GFP_KERNEL);
+ if (data) {
+ data->timeo = NFS_UNSPEC_TIMEO;
+ data->retrans = NFS_UNSPEC_RETRANS;
+ data->acregmin = NFS_DEF_ACREGMIN;
+ data->acregmax = NFS_DEF_ACREGMAX;
+ data->acdirmin = NFS_DEF_ACDIRMIN;
+ data->acdirmax = NFS_DEF_ACDIRMAX;
+ data->mount_server.port = NFS_UNSPEC_PORT;
+ data->nfs_server.port = NFS_UNSPEC_PORT;
+ data->nfs_server.protocol = XPRT_TRANSPORT_TCP;
+ data->selected_flavor = RPC_AUTH_MAXFLAVOR;
+ data->minorversion = 0;
+ data->need_mount = true;
+ data->net = current->nsproxy->net_ns;
+ data->lsm_opts = NULL;
+ }
+ return data;
+}
+
+void nfs_free_parsed_mount_data(struct nfs_parsed_mount_data *data)
+{
+ if (data) {
+ kfree(data->client_address);
+ kfree(data->mount_server.hostname);
+ kfree(data->nfs_server.export_path);
+ kfree(data->nfs_server.hostname);
+ kfree(data->fscache_uniq);
+ security_free_mnt_opts(&data->lsm_opts);
+ kfree(data);
+ }
+}
+
+/*
+ * Sanity-check a server address provided by the mount command.
+ *
+ * Address family must be initialized, and address must not be
+ * the ANY address for that family.
+ */
+static int nfs_verify_server_address(struct sockaddr *addr)
+{
+ switch (addr->sa_family) {
+ case AF_INET: {
+ struct sockaddr_in *sa = (struct sockaddr_in *)addr;
+ return sa->sin_addr.s_addr != htonl(INADDR_ANY);
+ }
+ case AF_INET6: {
+ struct in6_addr *sa = &((struct sockaddr_in6 *)addr)->sin6_addr;
+ return !ipv6_addr_any(sa);
+ }
+ }
+
+ dfprintk(MOUNT, "NFS: Invalid IP address specified\n");
+ return 0;
+}
+
+/*
+ * Sanity check the NFS transport protocol.
+ *
+ */
+static void nfs_validate_transport_protocol(struct nfs_parsed_mount_data *mnt)
+{
+ switch (mnt->nfs_server.protocol) {
+ case XPRT_TRANSPORT_UDP:
+ case XPRT_TRANSPORT_TCP:
+ case XPRT_TRANSPORT_RDMA:
+ break;
+ default:
+ mnt->nfs_server.protocol = XPRT_TRANSPORT_TCP;
+ }
+}
+
+/*
+ * For text based NFSv2/v3 mounts, the mount protocol transport default
+ * settings should depend upon the specified NFS transport.
+ */
+static void nfs_set_mount_transport_protocol(struct nfs_parsed_mount_data *mnt)
+{
+ nfs_validate_transport_protocol(mnt);
+
+ if (mnt->mount_server.protocol == XPRT_TRANSPORT_UDP ||
+ mnt->mount_server.protocol == XPRT_TRANSPORT_TCP)
+ return;
+ switch (mnt->nfs_server.protocol) {
+ case XPRT_TRANSPORT_UDP:
+ mnt->mount_server.protocol = XPRT_TRANSPORT_UDP;
+ break;
+ case XPRT_TRANSPORT_TCP:
+ case XPRT_TRANSPORT_RDMA:
+ mnt->mount_server.protocol = XPRT_TRANSPORT_TCP;
+ }
+}
+
+/*
+ * Add 'flavor' to 'auth_info' if not already present.
+ * Returns true if 'flavor' ends up in the list, false otherwise
+ */
+static bool nfs_auth_info_add(struct nfs_auth_info *auth_info,
+ rpc_authflavor_t flavor)
+{
+ unsigned int i;
+ unsigned int max_flavor_len = ARRAY_SIZE(auth_info->flavors);
+
+ /* make sure this flavor isn't already in the list */
+ for (i = 0; i < auth_info->flavor_len; i++) {
+ if (flavor == auth_info->flavors[i])
+ return true;
+ }
+
+ if (auth_info->flavor_len + 1 >= max_flavor_len) {
+ dfprintk(MOUNT, "NFS: too many sec= flavors\n");
+ return false;
+ }
+
+ auth_info->flavors[auth_info->flavor_len++] = flavor;
+ return true;
+}
+
+/*
+ * Parse the value of the 'sec=' option.
+ */
+static int nfs_parse_security_flavors(char *value,
+ struct nfs_parsed_mount_data *mnt)
+{
+ substring_t args[MAX_OPT_ARGS];
+ rpc_authflavor_t pseudoflavor;
+ char *p;
+
+ dfprintk(MOUNT, "NFS: parsing sec=%s option\n", value);
+
+ while ((p = strsep(&value, ":")) != NULL) {
+ switch (match_token(p, nfs_secflavor_tokens, args)) {
+ case Opt_sec_none:
+ pseudoflavor = RPC_AUTH_NULL;
+ break;
+ case Opt_sec_sys:
+ pseudoflavor = RPC_AUTH_UNIX;
+ break;
+ case Opt_sec_krb5:
+ pseudoflavor = RPC_AUTH_GSS_KRB5;
+ break;
+ case Opt_sec_krb5i:
+ pseudoflavor = RPC_AUTH_GSS_KRB5I;
+ break;
+ case Opt_sec_krb5p:
+ pseudoflavor = RPC_AUTH_GSS_KRB5P;
+ break;
+ case Opt_sec_lkey:
+ pseudoflavor = RPC_AUTH_GSS_LKEY;
+ break;
+ case Opt_sec_lkeyi:
+ pseudoflavor = RPC_AUTH_GSS_LKEYI;
+ break;
+ case Opt_sec_lkeyp:
+ pseudoflavor = RPC_AUTH_GSS_LKEYP;
+ break;
+ case Opt_sec_spkm:
+ pseudoflavor = RPC_AUTH_GSS_SPKM;
+ break;
+ case Opt_sec_spkmi:
+ pseudoflavor = RPC_AUTH_GSS_SPKMI;
+ break;
+ case Opt_sec_spkmp:
+ pseudoflavor = RPC_AUTH_GSS_SPKMP;
+ break;
+ default:
+ dfprintk(MOUNT,
+ "NFS: sec= option '%s' not recognized\n", p);
+ return 0;
+ }
+
+ if (!nfs_auth_info_add(&mnt->auth_info, pseudoflavor))
+ return 0;
+ }
+
+ return 1;
+}
+
+static int nfs_parse_version_string(char *string,
+ struct nfs_parsed_mount_data *mnt,
+ substring_t *args)
+{
+ mnt->flags &= ~NFS_MOUNT_VER3;
+ switch (match_token(string, nfs_vers_tokens, args)) {
+ case Opt_vers_2:
+ mnt->version = 2;
+ break;
+ case Opt_vers_3:
+ mnt->flags |= NFS_MOUNT_VER3;
+ mnt->version = 3;
+ break;
+ case Opt_vers_4:
+ /* Backward compatibility option. In future,
+ * the mount program should always supply
+ * a NFSv4 minor version number.
+ */
+ mnt->version = 4;
+ break;
+ case Opt_vers_4_0:
+ mnt->version = 4;
+ mnt->minorversion = 0;
+ break;
+ case Opt_vers_4_1:
+ mnt->version = 4;
+ mnt->minorversion = 1;
+ break;
+ case Opt_vers_4_2:
+ mnt->version = 4;
+ mnt->minorversion = 2;
+ break;
+ default:
+ return 0;
+ }
+ return 1;
+}
+
+static int nfs_get_option_str(substring_t args[], char **option)
+{
+ kfree(*option);
+ *option = match_strdup(args);
+ return !*option;
+}
+
+static int nfs_get_option_ul(substring_t args[], unsigned long *option)
+{
+ int rc;
+ char *string;
+
+ string = match_strdup(args);
+ if (string == NULL)
+ return -ENOMEM;
+ rc = kstrtoul(string, 10, option);
+ kfree(string);
+
+ return rc;
+}
+
+static int nfs_get_option_ul_bound(substring_t args[], unsigned long *option,
+ unsigned long l_bound, unsigned long u_bound)
+{
+ int ret;
+
+ ret = nfs_get_option_ul(args, option);
+ if (ret != 0)
+ return ret;
+ if (*option < l_bound || *option > u_bound)
+ return -ERANGE;
+ return 0;
+}
+
+/*
+ * Error-check and convert a string of mount options from user space into
+ * a data structure. The whole mount string is processed; bad options are
+ * skipped as they are encountered. If there were no errors, return 1;
+ * otherwise return 0 (zero).
+ */
+int nfs_parse_mount_options(char *raw, struct nfs_parsed_mount_data *mnt)
+{
+ char *p, *string;
+ int rc, sloppy = 0, invalid_option = 0;
+ unsigned short protofamily = AF_UNSPEC;
+ unsigned short mountfamily = AF_UNSPEC;
+
+ if (!raw) {
+ dfprintk(MOUNT, "NFS: mount options string was NULL.\n");
+ return 1;
+ }
+ dfprintk(MOUNT, "NFS: nfs mount opts='%s'\n", raw);
+
+ rc = security_sb_eat_lsm_opts(raw, &mnt->lsm_opts);
+ if (rc)
+ goto out_security_failure;
+
+ while ((p = strsep(&raw, ",")) != NULL) {
+ substring_t args[MAX_OPT_ARGS];
+ unsigned long option;
+ int token;
+
+ if (!*p)
+ continue;
+
+ dfprintk(MOUNT, "NFS: parsing nfs mount option '%s'\n", p);
+
+ token = match_token(p, nfs_mount_option_tokens, args);
+ switch (token) {
+
+ /*
+ * boolean options: foo/nofoo
+ */
+ case Opt_soft:
+ mnt->flags |= NFS_MOUNT_SOFT;
+ mnt->flags &= ~NFS_MOUNT_SOFTERR;
+ break;
+ case Opt_softerr:
+ mnt->flags |= NFS_MOUNT_SOFTERR;
+ mnt->flags &= ~NFS_MOUNT_SOFT;
+ break;
+ case Opt_hard:
+ mnt->flags &= ~(NFS_MOUNT_SOFT|NFS_MOUNT_SOFTERR);
+ break;
+ case Opt_posix:
+ mnt->flags |= NFS_MOUNT_POSIX;
+ break;
+ case Opt_noposix:
+ mnt->flags &= ~NFS_MOUNT_POSIX;
+ break;
+ case Opt_cto:
+ mnt->flags &= ~NFS_MOUNT_NOCTO;
+ break;
+ case Opt_nocto:
+ mnt->flags |= NFS_MOUNT_NOCTO;
+ break;
+ case Opt_ac:
+ mnt->flags &= ~NFS_MOUNT_NOAC;
+ break;
+ case Opt_noac:
+ mnt->flags |= NFS_MOUNT_NOAC;
+ break;
+ case Opt_lock:
+ mnt->flags &= ~NFS_MOUNT_NONLM;
+ mnt->flags &= ~(NFS_MOUNT_LOCAL_FLOCK |
+ NFS_MOUNT_LOCAL_FCNTL);
+ break;
+ case Opt_nolock:
+ mnt->flags |= NFS_MOUNT_NONLM;
+ mnt->flags |= (NFS_MOUNT_LOCAL_FLOCK |
+ NFS_MOUNT_LOCAL_FCNTL);
+ break;
+ case Opt_udp:
+ mnt->flags &= ~NFS_MOUNT_TCP;
+ mnt->nfs_server.protocol = XPRT_TRANSPORT_UDP;
+ break;
+ case Opt_tcp:
+ mnt->flags |= NFS_MOUNT_TCP;
+ mnt->nfs_server.protocol = XPRT_TRANSPORT_TCP;
+ break;
+ case Opt_rdma:
+ mnt->flags |= NFS_MOUNT_TCP; /* for side protocols */
+ mnt->nfs_server.protocol = XPRT_TRANSPORT_RDMA;
+ xprt_load_transport(p);
+ break;
+ case Opt_acl:
+ mnt->flags &= ~NFS_MOUNT_NOACL;
+ break;
+ case Opt_noacl:
+ mnt->flags |= NFS_MOUNT_NOACL;
+ break;
+ case Opt_rdirplus:
+ mnt->flags &= ~NFS_MOUNT_NORDIRPLUS;
+ break;
+ case Opt_nordirplus:
+ mnt->flags |= NFS_MOUNT_NORDIRPLUS;
+ break;
+ case Opt_sharecache:
+ mnt->flags &= ~NFS_MOUNT_UNSHARED;
+ break;
+ case Opt_nosharecache:
+ mnt->flags |= NFS_MOUNT_UNSHARED;
+ break;
+ case Opt_resvport:
+ mnt->flags &= ~NFS_MOUNT_NORESVPORT;
+ break;
+ case Opt_noresvport:
+ mnt->flags |= NFS_MOUNT_NORESVPORT;
+ break;
+ case Opt_fscache:
+ mnt->options |= NFS_OPTION_FSCACHE;
+ kfree(mnt->fscache_uniq);
+ mnt->fscache_uniq = NULL;
+ break;
+ case Opt_nofscache:
+ mnt->options &= ~NFS_OPTION_FSCACHE;
+ kfree(mnt->fscache_uniq);
+ mnt->fscache_uniq = NULL;
+ break;
+ case Opt_migration:
+ mnt->options |= NFS_OPTION_MIGRATION;
+ break;
+ case Opt_nomigration:
+ mnt->options &= ~NFS_OPTION_MIGRATION;
+ break;
+
+ /*
+ * options that take numeric values
+ */
+ case Opt_port:
+ if (nfs_get_option_ul(args, &option) ||
+ option > USHRT_MAX)
+ goto out_invalid_value;
+ mnt->nfs_server.port = option;
+ break;
+ case Opt_rsize:
+ if (nfs_get_option_ul(args, &option))
+ goto out_invalid_value;
+ mnt->rsize = option;
+ break;
+ case Opt_wsize:
+ if (nfs_get_option_ul(args, &option))
+ goto out_invalid_value;
+ mnt->wsize = option;
+ break;
+ case Opt_bsize:
+ if (nfs_get_option_ul(args, &option))
+ goto out_invalid_value;
+ mnt->bsize = option;
+ break;
+ case Opt_timeo:
+ if (nfs_get_option_ul_bound(args, &option, 1, INT_MAX))
+ goto out_invalid_value;
+ mnt->timeo = option;
+ break;
+ case Opt_retrans:
+ if (nfs_get_option_ul_bound(args, &option, 0, INT_MAX))
+ goto out_invalid_value;
+ mnt->retrans = option;
+ break;
+ case Opt_acregmin:
+ if (nfs_get_option_ul(args, &option))
+ goto out_invalid_value;
+ mnt->acregmin = option;
+ break;
+ case Opt_acregmax:
+ if (nfs_get_option_ul(args, &option))
+ goto out_invalid_value;
+ mnt->acregmax = option;
+ break;
+ case Opt_acdirmin:
+ if (nfs_get_option_ul(args, &option))
+ goto out_invalid_value;
+ mnt->acdirmin = option;
+ break;
+ case Opt_acdirmax:
+ if (nfs_get_option_ul(args, &option))
+ goto out_invalid_value;
+ mnt->acdirmax = option;
+ break;
+ case Opt_actimeo:
+ if (nfs_get_option_ul(args, &option))
+ goto out_invalid_value;
+ mnt->acregmin = mnt->acregmax =
+ mnt->acdirmin = mnt->acdirmax = option;
+ break;
+ case Opt_namelen:
+ if (nfs_get_option_ul(args, &option))
+ goto out_invalid_value;
+ mnt->namlen = option;
+ break;
+ case Opt_mountport:
+ if (nfs_get_option_ul(args, &option) ||
+ option > USHRT_MAX)
+ goto out_invalid_value;
+ mnt->mount_server.port = option;
+ break;
+ case Opt_mountvers:
+ if (nfs_get_option_ul(args, &option) ||
+ option < NFS_MNT_VERSION ||
+ option > NFS_MNT3_VERSION)
+ goto out_invalid_value;
+ mnt->mount_server.version = option;
+ break;
+ case Opt_minorversion:
+ if (nfs_get_option_ul(args, &option))
+ goto out_invalid_value;
+ if (option > NFS4_MAX_MINOR_VERSION)
+ goto out_invalid_value;
+ mnt->minorversion = option;
+ break;
+
+ /*
+ * options that take text values
+ */
+ case Opt_nfsvers:
+ string = match_strdup(args);
+ if (string == NULL)
+ goto out_nomem;
+ rc = nfs_parse_version_string(string, mnt, args);
+ kfree(string);
+ if (!rc)
+ goto out_invalid_value;
+ break;
+ case Opt_sec:
+ string = match_strdup(args);
+ if (string == NULL)
+ goto out_nomem;
+ rc = nfs_parse_security_flavors(string, mnt);
+ kfree(string);
+ if (!rc) {
+ dfprintk(MOUNT, "NFS: unrecognized "
+ "security flavor\n");
+ return 0;
+ }
+ break;
+ case Opt_proto:
+ string = match_strdup(args);
+ if (string == NULL)
+ goto out_nomem;
+ token = match_token(string,
+ nfs_xprt_protocol_tokens, args);
+
+ protofamily = AF_INET;
+ switch (token) {
+ case Opt_xprt_udp6:
+ protofamily = AF_INET6;
+ /* fall through */
+ case Opt_xprt_udp:
+ mnt->flags &= ~NFS_MOUNT_TCP;
+ mnt->nfs_server.protocol = XPRT_TRANSPORT_UDP;
+ break;
+ case Opt_xprt_tcp6:
+ protofamily = AF_INET6;
+ /* fall through */
+ case Opt_xprt_tcp:
+ mnt->flags |= NFS_MOUNT_TCP;
+ mnt->nfs_server.protocol = XPRT_TRANSPORT_TCP;
+ break;
+ case Opt_xprt_rdma6:
+ protofamily = AF_INET6;
+ /* fall through */
+ case Opt_xprt_rdma:
+ /* vector side protocols to TCP */
+ mnt->flags |= NFS_MOUNT_TCP;
+ mnt->nfs_server.protocol = XPRT_TRANSPORT_RDMA;
+ xprt_load_transport(string);
+ break;
+ default:
+ dfprintk(MOUNT, "NFS: unrecognized "
+ "transport protocol\n");
+ kfree(string);
+ return 0;
+ }
+ kfree(string);
+ break;
+ case Opt_mountproto:
+ string = match_strdup(args);
+ if (string == NULL)
+ goto out_nomem;
+ token = match_token(string,
+ nfs_xprt_protocol_tokens, args);
+ kfree(string);
+
+ mountfamily = AF_INET;
+ switch (token) {
+ case Opt_xprt_udp6:
+ mountfamily = AF_INET6;
+ /* fall through */
+ case Opt_xprt_udp:
+ mnt->mount_server.protocol = XPRT_TRANSPORT_UDP;
+ break;
+ case Opt_xprt_tcp6:
+ mountfamily = AF_INET6;
+ /* fall through */
+ case Opt_xprt_tcp:
+ mnt->mount_server.protocol = XPRT_TRANSPORT_TCP;
+ break;
+ case Opt_xprt_rdma: /* not used for side protocols */
+ default:
+ dfprintk(MOUNT, "NFS: unrecognized "
+ "transport protocol\n");
+ return 0;
+ }
+ break;
+ case Opt_addr:
+ string = match_strdup(args);
+ if (string == NULL)
+ goto out_nomem;
+ mnt->nfs_server.addrlen =
+ rpc_pton(mnt->net, string, strlen(string),
+ (struct sockaddr *)
+ &mnt->nfs_server.address,
+ sizeof(mnt->nfs_server.address));
+ kfree(string);
+ if (mnt->nfs_server.addrlen == 0)
+ goto out_invalid_address;
+ break;
+ case Opt_clientaddr:
+ if (nfs_get_option_str(args, &mnt->client_address))
+ goto out_nomem;
+ break;
+ case Opt_mounthost:
+ if (nfs_get_option_str(args,
+ &mnt->mount_server.hostname))
+ goto out_nomem;
+ break;
+ case Opt_mountaddr:
+ string = match_strdup(args);
+ if (string == NULL)
+ goto out_nomem;
+ mnt->mount_server.addrlen =
+ rpc_pton(mnt->net, string, strlen(string),
+ (struct sockaddr *)
+ &mnt->mount_server.address,
+ sizeof(mnt->mount_server.address));
+ kfree(string);
+ if (mnt->mount_server.addrlen == 0)
+ goto out_invalid_address;
+ break;
+ case Opt_nconnect:
+ if (nfs_get_option_ul_bound(args, &option, 1, NFS_MAX_CONNECTIONS))
+ goto out_invalid_value;
+ mnt->nfs_server.nconnect = option;
+ break;
+ case Opt_lookupcache:
+ string = match_strdup(args);
+ if (string == NULL)
+ goto out_nomem;
+ token = match_token(string,
+ nfs_lookupcache_tokens, args);
+ kfree(string);
+ switch (token) {
+ case Opt_lookupcache_all:
+ mnt->flags &= ~(NFS_MOUNT_LOOKUP_CACHE_NONEG|NFS_MOUNT_LOOKUP_CACHE_NONE);
+ break;
+ case Opt_lookupcache_positive:
+ mnt->flags &= ~NFS_MOUNT_LOOKUP_CACHE_NONE;
+ mnt->flags |= NFS_MOUNT_LOOKUP_CACHE_NONEG;
+ break;
+ case Opt_lookupcache_none:
+ mnt->flags |= NFS_MOUNT_LOOKUP_CACHE_NONEG|NFS_MOUNT_LOOKUP_CACHE_NONE;
+ break;
+ default:
+ dfprintk(MOUNT, "NFS: invalid "
+ "lookupcache argument\n");
+ return 0;
+ };
+ break;
+ case Opt_fscache_uniq:
+ if (nfs_get_option_str(args, &mnt->fscache_uniq))
+ goto out_nomem;
+ mnt->options |= NFS_OPTION_FSCACHE;
+ break;
+ case Opt_local_lock:
+ string = match_strdup(args);
+ if (string == NULL)
+ goto out_nomem;
+ token = match_token(string, nfs_local_lock_tokens,
+ args);
+ kfree(string);
+ switch (token) {
+ case Opt_local_lock_all:
+ mnt->flags |= (NFS_MOUNT_LOCAL_FLOCK |
+ NFS_MOUNT_LOCAL_FCNTL);
+ break;
+ case Opt_local_lock_flock:
+ mnt->flags |= NFS_MOUNT_LOCAL_FLOCK;
+ break;
+ case Opt_local_lock_posix:
+ mnt->flags |= NFS_MOUNT_LOCAL_FCNTL;
+ break;
+ case Opt_local_lock_none:
+ mnt->flags &= ~(NFS_MOUNT_LOCAL_FLOCK |
+ NFS_MOUNT_LOCAL_FCNTL);
+ break;
+ default:
+ dfprintk(MOUNT, "NFS: invalid "
+ "local_lock argument\n");
+ return 0;
+ };
+ break;
+
+ /*
+ * Special options
+ */
+ case Opt_sloppy:
+ sloppy = 1;
+ dfprintk(MOUNT, "NFS: relaxing parsing rules\n");
+ break;
+ case Opt_userspace:
+ case Opt_deprecated:
+ dfprintk(MOUNT, "NFS: ignoring mount option "
+ "'%s'\n", p);
+ break;
+
+ default:
+ invalid_option = 1;
+ dfprintk(MOUNT, "NFS: unrecognized mount option "
+ "'%s'\n", p);
+ }
+ }
+
+ if (!sloppy && invalid_option)
+ return 0;
+
+ if (mnt->minorversion && mnt->version != 4)
+ goto out_minorversion_mismatch;
+
+ if (mnt->options & NFS_OPTION_MIGRATION &&
+ (mnt->version != 4 || mnt->minorversion != 0))
+ goto out_migration_misuse;
+
+ /*
+ * verify that any proto=/mountproto= options match the address
+ * families in the addr=/mountaddr= options.
+ */
+ if (protofamily != AF_UNSPEC &&
+ protofamily != mnt->nfs_server.address.ss_family)
+ goto out_proto_mismatch;
+
+ if (mountfamily != AF_UNSPEC) {
+ if (mnt->mount_server.addrlen) {
+ if (mountfamily != mnt->mount_server.address.ss_family)
+ goto out_mountproto_mismatch;
+ } else {
+ if (mountfamily != mnt->nfs_server.address.ss_family)
+ goto out_mountproto_mismatch;
+ }
+ }
+
+ return 1;
+
+out_mountproto_mismatch:
+ printk(KERN_INFO "NFS: mount server address does not match mountproto= "
+ "option\n");
+ return 0;
+out_proto_mismatch:
+ printk(KERN_INFO "NFS: server address does not match proto= option\n");
+ return 0;
+out_invalid_address:
+ printk(KERN_INFO "NFS: bad IP address specified: %s\n", p);
+ return 0;
+out_invalid_value:
+ printk(KERN_INFO "NFS: bad mount option value specified: %s\n", p);
+ return 0;
+out_minorversion_mismatch:
+ printk(KERN_INFO "NFS: mount option vers=%u does not support "
+ "minorversion=%u\n", mnt->version, mnt->minorversion);
+ return 0;
+out_migration_misuse:
+ printk(KERN_INFO
+ "NFS: 'migration' not supported for this NFS version\n");
+ return 0;
+out_nomem:
+ printk(KERN_INFO "NFS: not enough memory to parse option\n");
+ return 0;
+out_security_failure:
+ printk(KERN_INFO "NFS: security options invalid: %d\n", rc);
+ return 0;
+}
+
+/*
+ * Split "dev_name" into "hostname:export_path".
+ *
+ * The leftmost colon demarks the split between the server's hostname
+ * and the export path. If the hostname starts with a left square
+ * bracket, then it may contain colons.
+ *
+ * Note: caller frees hostname and export path, even on error.
+ */
+static int nfs_parse_devname(const char *dev_name,
+ char **hostname, size_t maxnamlen,
+ char **export_path, size_t maxpathlen)
+{
+ size_t len;
+ char *end;
+
+ if (unlikely(!dev_name || !*dev_name)) {
+ dfprintk(MOUNT, "NFS: device name not specified\n");
+ return -EINVAL;
+ }
+
+ /* Is the host name protected with square brakcets? */
+ if (*dev_name == '[') {
+ end = strchr(++dev_name, ']');
+ if (end == NULL || end[1] != ':')
+ goto out_bad_devname;
+
+ len = end - dev_name;
+ end++;
+ } else {
+ char *comma;
+
+ end = strchr(dev_name, ':');
+ if (end == NULL)
+ goto out_bad_devname;
+ len = end - dev_name;
+
+ /* kill possible hostname list: not supported */
+ comma = strchr(dev_name, ',');
+ if (comma != NULL && comma < end)
+ len = comma - dev_name;
+ }
+
+ if (len > maxnamlen)
+ goto out_hostname;
+
+ /* N.B. caller will free nfs_server.hostname in all cases */
+ *hostname = kstrndup(dev_name, len, GFP_KERNEL);
+ if (*hostname == NULL)
+ goto out_nomem;
+ len = strlen(++end);
+ if (len > maxpathlen)
+ goto out_path;
+ *export_path = kstrndup(end, len, GFP_KERNEL);
+ if (!*export_path)
+ goto out_nomem;
+
+ dfprintk(MOUNT, "NFS: MNTPATH: '%s'\n", *export_path);
+ return 0;
+
+out_bad_devname:
+ dfprintk(MOUNT, "NFS: device name not in host:path format\n");
+ return -EINVAL;
+
+out_nomem:
+ dfprintk(MOUNT, "NFS: not enough memory to parse device name\n");
+ return -ENOMEM;
+
+out_hostname:
+ dfprintk(MOUNT, "NFS: server hostname too long\n");
+ return -ENAMETOOLONG;
+
+out_path:
+ dfprintk(MOUNT, "NFS: export pathname too long\n");
+ return -ENAMETOOLONG;
+}
+
+/*
+ * Validate the NFS2/NFS3 mount data
+ * - fills in the mount root filehandle
+ *
+ * For option strings, user space handles the following behaviors:
+ *
+ * + DNS: mapping server host name to IP address ("addr=" option)
+ *
+ * + failure mode: how to behave if a mount request can't be handled
+ * immediately ("fg/bg" option)
+ *
+ * + retry: how often to retry a mount request ("retry=" option)
+ *
+ * + breaking back: trying proto=udp after proto=tcp, v2 after v3,
+ * mountproto=tcp after mountproto=udp, and so on
+ */
+static int nfs23_validate_mount_data(void *options,
+ struct nfs_parsed_mount_data *args,
+ struct nfs_fh *mntfh,
+ const char *dev_name)
+{
+ struct nfs_mount_data *data = (struct nfs_mount_data *)options;
+ struct sockaddr *sap = (struct sockaddr *)&args->nfs_server.address;
+ int extra_flags = NFS_MOUNT_LEGACY_INTERFACE;
+
+ if (data == NULL)
+ goto out_no_data;
+
+ args->version = NFS_DEFAULT_VERSION;
+ switch (data->version) {
+ case 1:
+ data->namlen = 0; /* fall through */
+ case 2:
+ data->bsize = 0; /* fall through */
+ case 3:
+ if (data->flags & NFS_MOUNT_VER3)
+ goto out_no_v3;
+ data->root.size = NFS2_FHSIZE;
+ memcpy(data->root.data, data->old_root.data, NFS2_FHSIZE);
+ /* Turn off security negotiation */
+ extra_flags |= NFS_MOUNT_SECFLAVOUR;
+ /* fall through */
+ case 4:
+ if (data->flags & NFS_MOUNT_SECFLAVOUR)
+ goto out_no_sec;
+ /* fall through */
+ case 5:
+ memset(data->context, 0, sizeof(data->context));
+ /* fall through */
+ case 6:
+ if (data->flags & NFS_MOUNT_VER3) {
+ if (data->root.size > NFS3_FHSIZE || data->root.size == 0)
+ goto out_invalid_fh;
+ mntfh->size = data->root.size;
+ args->version = 3;
+ } else {
+ mntfh->size = NFS2_FHSIZE;
+ args->version = 2;
+ }
+
+
+ memcpy(mntfh->data, data->root.data, mntfh->size);
+ if (mntfh->size < sizeof(mntfh->data))
+ memset(mntfh->data + mntfh->size, 0,
+ sizeof(mntfh->data) - mntfh->size);
+
+ /*
+ * Translate to nfs_parsed_mount_data, which nfs_fill_super
+ * can deal with.
+ */
+ args->flags = data->flags & NFS_MOUNT_FLAGMASK;
+ args->flags |= extra_flags;
+ args->rsize = data->rsize;
+ args->wsize = data->wsize;
+ args->timeo = data->timeo;
+ args->retrans = data->retrans;
+ args->acregmin = data->acregmin;
+ args->acregmax = data->acregmax;
+ args->acdirmin = data->acdirmin;
+ args->acdirmax = data->acdirmax;
+ args->need_mount = false;
+
+ memcpy(sap, &data->addr, sizeof(data->addr));
+ args->nfs_server.addrlen = sizeof(data->addr);
+ args->nfs_server.port = ntohs(data->addr.sin_port);
+ if (sap->sa_family != AF_INET ||
+ !nfs_verify_server_address(sap))
+ goto out_no_address;
+
+ if (!(data->flags & NFS_MOUNT_TCP))
+ args->nfs_server.protocol = XPRT_TRANSPORT_UDP;
+ /* N.B. caller will free nfs_server.hostname in all cases */
+ args->nfs_server.hostname = kstrdup(data->hostname, GFP_KERNEL);
+ args->namlen = data->namlen;
+ args->bsize = data->bsize;
+
+ if (data->flags & NFS_MOUNT_SECFLAVOUR)
+ args->selected_flavor = data->pseudoflavor;
+ else
+ args->selected_flavor = RPC_AUTH_UNIX;
+ if (!args->nfs_server.hostname)
+ goto out_nomem;
+
+ if (!(data->flags & NFS_MOUNT_NONLM))
+ args->flags &= ~(NFS_MOUNT_LOCAL_FLOCK|
+ NFS_MOUNT_LOCAL_FCNTL);
+ else
+ args->flags |= (NFS_MOUNT_LOCAL_FLOCK|
+ NFS_MOUNT_LOCAL_FCNTL);
+ /*
+ * The legacy version 6 binary mount data from userspace has a
+ * field used only to transport selinux information into the
+ * the kernel. To continue to support that functionality we
+ * have a touch of selinux knowledge here in the NFS code. The
+ * userspace code converted context=blah to just blah so we are
+ * converting back to the full string selinux understands.
+ */
+ if (data->context[0]){
+#ifdef CONFIG_SECURITY_SELINUX
+ int rc;
+ data->context[NFS_MAX_CONTEXT_LEN] = '\0';
+ rc = security_add_mnt_opt("context", data->context,
+ strlen(data->context), &args->lsm_opts);
+ if (rc)
+ return rc;
+#else
+ return -EINVAL;
+#endif
+ }
+
+ break;
+ default:
+ return NFS_TEXT_DATA;
+ }
+
+ return 0;
+
+out_no_data:
+ dfprintk(MOUNT, "NFS: mount program didn't pass any mount data\n");
+ return -EINVAL;
+
+out_no_v3:
+ dfprintk(MOUNT, "NFS: nfs_mount_data version %d does not support v3\n",
+ data->version);
+ return -EINVAL;
+
+out_no_sec:
+ dfprintk(MOUNT, "NFS: nfs_mount_data version supports only AUTH_SYS\n");
+ return -EINVAL;
+
+out_nomem:
+ dfprintk(MOUNT, "NFS: not enough memory to handle mount options\n");
+ return -ENOMEM;
+
+out_no_address:
+ dfprintk(MOUNT, "NFS: mount program didn't pass remote address\n");
+ return -EINVAL;
+
+out_invalid_fh:
+ dfprintk(MOUNT, "NFS: invalid root filehandle\n");
+ return -EINVAL;
+}
+
+#if IS_ENABLED(CONFIG_NFS_V4)
+
+static void nfs4_validate_mount_flags(struct nfs_parsed_mount_data *args)
+{
+ args->flags &= ~(NFS_MOUNT_NONLM|NFS_MOUNT_NOACL|NFS_MOUNT_VER3|
+ NFS_MOUNT_LOCAL_FLOCK|NFS_MOUNT_LOCAL_FCNTL);
+}
+
+/*
+ * Validate NFSv4 mount options
+ */
+static int nfs4_validate_mount_data(void *options,
+ struct nfs_parsed_mount_data *args,
+ const char *dev_name)
+{
+ struct sockaddr *sap = (struct sockaddr *)&args->nfs_server.address;
+ struct nfs4_mount_data *data = (struct nfs4_mount_data *)options;
+ char *c;
+
+ if (data == NULL)
+ goto out_no_data;
+
+ args->version = 4;
+
+ switch (data->version) {
+ case 1:
+ if (data->host_addrlen > sizeof(args->nfs_server.address))
+ goto out_no_address;
+ if (data->host_addrlen == 0)
+ goto out_no_address;
+ args->nfs_server.addrlen = data->host_addrlen;
+ if (copy_from_user(sap, data->host_addr, data->host_addrlen))
+ return -EFAULT;
+ if (!nfs_verify_server_address(sap))
+ goto out_no_address;
+ args->nfs_server.port = ntohs(((struct sockaddr_in *)sap)->sin_port);
+
+ if (data->auth_flavourlen) {
+ rpc_authflavor_t pseudoflavor;
+ if (data->auth_flavourlen > 1)
+ goto out_inval_auth;
+ if (copy_from_user(&pseudoflavor,
+ data->auth_flavours,
+ sizeof(pseudoflavor)))
+ return -EFAULT;
+ args->selected_flavor = pseudoflavor;
+ } else
+ args->selected_flavor = RPC_AUTH_UNIX;
+
+ c = strndup_user(data->hostname.data, NFS4_MAXNAMLEN);
+ if (IS_ERR(c))
+ return PTR_ERR(c);
+ args->nfs_server.hostname = c;
+
+ c = strndup_user(data->mnt_path.data, NFS4_MAXPATHLEN);
+ if (IS_ERR(c))
+ return PTR_ERR(c);
+ args->nfs_server.export_path = c;
+ dfprintk(MOUNT, "NFS: MNTPATH: '%s'\n", c);
+
+ c = strndup_user(data->client_addr.data, 16);
+ if (IS_ERR(c))
+ return PTR_ERR(c);
+ args->client_address = c;
+
+ /*
+ * Translate to nfs_parsed_mount_data, which nfs4_fill_super
+ * can deal with.
+ */
+
+ args->flags = data->flags & NFS4_MOUNT_FLAGMASK;
+ args->rsize = data->rsize;
+ args->wsize = data->wsize;
+ args->timeo = data->timeo;
+ args->retrans = data->retrans;
+ args->acregmin = data->acregmin;
+ args->acregmax = data->acregmax;
+ args->acdirmin = data->acdirmin;
+ args->acdirmax = data->acdirmax;
+ args->nfs_server.protocol = data->proto;
+ nfs_validate_transport_protocol(args);
+ if (args->nfs_server.protocol == XPRT_TRANSPORT_UDP)
+ goto out_invalid_transport_udp;
+
+ break;
+ default:
+ return NFS_TEXT_DATA;
+ }
+
+ return 0;
+
+out_no_data:
+ dfprintk(MOUNT, "NFS4: mount program didn't pass any mount data\n");
+ return -EINVAL;
+
+out_inval_auth:
+ dfprintk(MOUNT, "NFS4: Invalid number of RPC auth flavours %d\n",
+ data->auth_flavourlen);
+ return -EINVAL;
+
+out_no_address:
+ dfprintk(MOUNT, "NFS4: mount program didn't pass remote address\n");
+ return -EINVAL;
+
+out_invalid_transport_udp:
+ dfprintk(MOUNT, "NFSv4: Unsupported transport protocol udp\n");
+ return -EINVAL;
+}
+
+int nfs_validate_mount_data(struct file_system_type *fs_type,
+ void *options,
+ struct nfs_parsed_mount_data *args,
+ struct nfs_fh *mntfh,
+ const char *dev_name)
+{
+ if (fs_type == &nfs_fs_type)
+ return nfs23_validate_mount_data(options, args, mntfh, dev_name);
+ return nfs4_validate_mount_data(options, args, dev_name);
+}
+#else
+int nfs_validate_mount_data(struct file_system_type *fs_type,
+ void *options,
+ struct nfs_parsed_mount_data *args,
+ struct nfs_fh *mntfh,
+ const char *dev_name)
+{
+ return nfs23_validate_mount_data(options, args, mntfh, dev_name);
+}
+#endif
+
+int nfs_validate_text_mount_data(void *options,
+ struct nfs_parsed_mount_data *args,
+ const char *dev_name)
+{
+ int port = 0;
+ int max_namelen = PAGE_SIZE;
+ int max_pathlen = NFS_MAXPATHLEN;
+ struct sockaddr *sap = (struct sockaddr *)&args->nfs_server.address;
+
+ if (nfs_parse_mount_options((char *)options, args) == 0)
+ return -EINVAL;
+
+ if (!nfs_verify_server_address(sap))
+ goto out_no_address;
+
+ if (args->version == 4) {
+#if IS_ENABLED(CONFIG_NFS_V4)
+ if (args->nfs_server.protocol == XPRT_TRANSPORT_RDMA)
+ port = NFS_RDMA_PORT;
+ else
+ port = NFS_PORT;
+ max_namelen = NFS4_MAXNAMLEN;
+ max_pathlen = NFS4_MAXPATHLEN;
+ nfs_validate_transport_protocol(args);
+ if (args->nfs_server.protocol == XPRT_TRANSPORT_UDP)
+ goto out_invalid_transport_udp;
+ nfs4_validate_mount_flags(args);
+#else
+ goto out_v4_not_compiled;
+#endif /* CONFIG_NFS_V4 */
+ } else {
+ nfs_set_mount_transport_protocol(args);
+ if (args->nfs_server.protocol == XPRT_TRANSPORT_RDMA)
+ port = NFS_RDMA_PORT;
+ }
+
+ nfs_set_port(sap, &args->nfs_server.port, port);
+
+ return nfs_parse_devname(dev_name,
+ &args->nfs_server.hostname,
+ max_namelen,
+ &args->nfs_server.export_path,
+ max_pathlen);
+
+#if !IS_ENABLED(CONFIG_NFS_V4)
+out_v4_not_compiled:
+ dfprintk(MOUNT, "NFS: NFSv4 is not compiled into kernel\n");
+ return -EPROTONOSUPPORT;
+#else
+out_invalid_transport_udp:
+ dfprintk(MOUNT, "NFSv4: Unsupported transport protocol udp\n");
+ return -EINVAL;
+#endif /* !CONFIG_NFS_V4 */
+
+out_no_address:
+ dfprintk(MOUNT, "NFS: mount program didn't pass remote address\n");
+ return -EINVAL;
+}
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index c0c6cd24f73f..0818736efc57 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -7,6 +7,7 @@
#include <linux/mount.h>
#include <linux/security.h>
#include <linux/crc32.h>
+#include <linux/sunrpc/addr.h>
#include <linux/nfs_page.h>
#include <linux/wait_bit.h>
@@ -224,6 +225,22 @@ extern const struct svc_version nfs4_callback_version1;
extern const struct svc_version nfs4_callback_version4;
struct nfs_pageio_descriptor;
+
+/* mount.c */
+#define NFS_TEXT_DATA 1
+
+extern struct nfs_parsed_mount_data *nfs_alloc_parsed_mount_data(void);
+extern void nfs_free_parsed_mount_data(struct nfs_parsed_mount_data *data);
+extern int nfs_parse_mount_options(char *raw, struct nfs_parsed_mount_data *mnt);
+extern int nfs_validate_mount_data(struct file_system_type *fs_type,
+ void *options,
+ struct nfs_parsed_mount_data *args,
+ struct nfs_fh *mntfh,
+ const char *dev_name);
+extern int nfs_validate_text_mount_data(void *options,
+ struct nfs_parsed_mount_data *args,
+ const char *dev_name);
+
/* pagelist.c */
extern int __init nfs_init_nfspagecache(void);
extern void nfs_destroy_nfspagecache(void);
@@ -765,3 +782,16 @@ static inline bool nfs_error_is_fatal_on_server(int err)
}
return nfs_error_is_fatal(err);
}
+
+/*
+ * Select between a default port value and a user-specified port value.
+ * If a zero value is set, then autobind will be used.
+ */
+static inline void nfs_set_port(struct sockaddr *sap, int *port,
+ const unsigned short default_port)
+{
+ if (*port == NFS_UNSPEC_PORT)
+ *port = default_port;
+
+ rpc_set_port(sap, *port);
+}
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index f1b5488a04c3..bfea31cf1c12 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -69,229 +69,6 @@
#include "nfs.h"
#define NFSDBG_FACILITY NFSDBG_VFS
-#define NFS_TEXT_DATA 1
-
-#if IS_ENABLED(CONFIG_NFS_V3)
-#define NFS_DEFAULT_VERSION 3
-#else
-#define NFS_DEFAULT_VERSION 2
-#endif
-
-#define NFS_MAX_CONNECTIONS 16
-
-enum {
- /* Mount options that take no arguments */
- Opt_soft, Opt_softerr, Opt_hard,
- Opt_posix, Opt_noposix,
- Opt_cto, Opt_nocto,
- Opt_ac, Opt_noac,
- Opt_lock, Opt_nolock,
- Opt_udp, Opt_tcp, Opt_rdma,
- Opt_acl, Opt_noacl,
- Opt_rdirplus, Opt_nordirplus,
- Opt_sharecache, Opt_nosharecache,
- Opt_resvport, Opt_noresvport,
- Opt_fscache, Opt_nofscache,
- Opt_migration, Opt_nomigration,
-
- /* Mount options that take integer arguments */
- Opt_port,
- Opt_rsize, Opt_wsize, Opt_bsize,
- Opt_timeo, Opt_retrans,
- Opt_acregmin, Opt_acregmax,
- Opt_acdirmin, Opt_acdirmax,
- Opt_actimeo,
- Opt_namelen,
- Opt_mountport,
- Opt_mountvers,
- Opt_minorversion,
-
- /* Mount options that take string arguments */
- Opt_nfsvers,
- Opt_sec, Opt_proto, Opt_mountproto, Opt_mounthost,
- Opt_addr, Opt_mountaddr, Opt_clientaddr,
- Opt_nconnect,
- Opt_lookupcache,
- Opt_fscache_uniq,
- Opt_local_lock,
-
- /* Special mount options */
- Opt_userspace, Opt_deprecated, Opt_sloppy,
-
- Opt_err
-};
-
-static const match_table_t nfs_mount_option_tokens = {
- { Opt_userspace, "bg" },
- { Opt_userspace, "fg" },
- { Opt_userspace, "retry=%s" },
-
- { Opt_sloppy, "sloppy" },
-
- { Opt_soft, "soft" },
- { Opt_softerr, "softerr" },
- { Opt_hard, "hard" },
- { Opt_deprecated, "intr" },
- { Opt_deprecated, "nointr" },
- { Opt_posix, "posix" },
- { Opt_noposix, "noposix" },
- { Opt_cto, "cto" },
- { Opt_nocto, "nocto" },
- { Opt_ac, "ac" },
- { Opt_noac, "noac" },
- { Opt_lock, "lock" },
- { Opt_nolock, "nolock" },
- { Opt_udp, "udp" },
- { Opt_tcp, "tcp" },
- { Opt_rdma, "rdma" },
- { Opt_acl, "acl" },
- { Opt_noacl, "noacl" },
- { Opt_rdirplus, "rdirplus" },
- { Opt_nordirplus, "nordirplus" },
- { Opt_sharecache, "sharecache" },
- { Opt_nosharecache, "nosharecache" },
- { Opt_resvport, "resvport" },
- { Opt_noresvport, "noresvport" },
- { Opt_fscache, "fsc" },
- { Opt_nofscache, "nofsc" },
- { Opt_migration, "migration" },
- { Opt_nomigration, "nomigration" },
-
- { Opt_port, "port=%s" },
- { Opt_rsize, "rsize=%s" },
- { Opt_wsize, "wsize=%s" },
- { Opt_bsize, "bsize=%s" },
- { Opt_timeo, "timeo=%s" },
- { Opt_retrans, "retrans=%s" },
- { Opt_acregmin, "acregmin=%s" },
- { Opt_acregmax, "acregmax=%s" },
- { Opt_acdirmin, "acdirmin=%s" },
- { Opt_acdirmax, "acdirmax=%s" },
- { Opt_actimeo, "actimeo=%s" },
- { Opt_namelen, "namlen=%s" },
- { Opt_mountport, "mountport=%s" },
- { Opt_mountvers, "mountvers=%s" },
- { Opt_minorversion, "minorversion=%s" },
-
- { Opt_nfsvers, "nfsvers=%s" },
- { Opt_nfsvers, "vers=%s" },
-
- { Opt_sec, "sec=%s" },
- { Opt_proto, "proto=%s" },
- { Opt_mountproto, "mountproto=%s" },
- { Opt_addr, "addr=%s" },
- { Opt_clientaddr, "clientaddr=%s" },
- { Opt_mounthost, "mounthost=%s" },
- { Opt_mountaddr, "mountaddr=%s" },
-
- { Opt_nconnect, "nconnect=%s" },
-
- { Opt_lookupcache, "lookupcache=%s" },
- { Opt_fscache_uniq, "fsc=%s" },
- { Opt_local_lock, "local_lock=%s" },
-
- /* The following needs to be listed after all other options */
- { Opt_nfsvers, "v%s" },
-
- { Opt_err, NULL }
-};
-
-enum {
- Opt_xprt_udp, Opt_xprt_udp6, Opt_xprt_tcp, Opt_xprt_tcp6, Opt_xprt_rdma,
- Opt_xprt_rdma6,
-
- Opt_xprt_err
-};
-
-static const match_table_t nfs_xprt_protocol_tokens = {
- { Opt_xprt_udp, "udp" },
- { Opt_xprt_udp6, "udp6" },
- { Opt_xprt_tcp, "tcp" },
- { Opt_xprt_tcp6, "tcp6" },
- { Opt_xprt_rdma, "rdma" },
- { Opt_xprt_rdma6, "rdma6" },
-
- { Opt_xprt_err, NULL }
-};
-
-enum {
- Opt_sec_none, Opt_sec_sys,
- Opt_sec_krb5, Opt_sec_krb5i, Opt_sec_krb5p,
- Opt_sec_lkey, Opt_sec_lkeyi, Opt_sec_lkeyp,
- Opt_sec_spkm, Opt_sec_spkmi, Opt_sec_spkmp,
-
- Opt_sec_err
-};
-
-static const match_table_t nfs_secflavor_tokens = {
- { Opt_sec_none, "none" },
- { Opt_sec_none, "null" },
- { Opt_sec_sys, "sys" },
-
- { Opt_sec_krb5, "krb5" },
- { Opt_sec_krb5i, "krb5i" },
- { Opt_sec_krb5p, "krb5p" },
-
- { Opt_sec_lkey, "lkey" },
- { Opt_sec_lkeyi, "lkeyi" },
- { Opt_sec_lkeyp, "lkeyp" },
-
- { Opt_sec_spkm, "spkm3" },
- { Opt_sec_spkmi, "spkm3i" },
- { Opt_sec_spkmp, "spkm3p" },
-
- { Opt_sec_err, NULL }
-};
-
-enum {
- Opt_lookupcache_all, Opt_lookupcache_positive,
- Opt_lookupcache_none,
-
- Opt_lookupcache_err
-};
-
-static match_table_t nfs_lookupcache_tokens = {
- { Opt_lookupcache_all, "all" },
- { Opt_lookupcache_positive, "pos" },
- { Opt_lookupcache_positive, "positive" },
- { Opt_lookupcache_none, "none" },
-
- { Opt_lookupcache_err, NULL }
-};
-
-enum {
- Opt_local_lock_all, Opt_local_lock_flock, Opt_local_lock_posix,
- Opt_local_lock_none,
-
- Opt_local_lock_err
-};
-
-static match_table_t nfs_local_lock_tokens = {
- { Opt_local_lock_all, "all" },
- { Opt_local_lock_flock, "flock" },
- { Opt_local_lock_posix, "posix" },
- { Opt_local_lock_none, "none" },
-
- { Opt_local_lock_err, NULL }
-};
-
-enum {
- Opt_vers_2, Opt_vers_3, Opt_vers_4, Opt_vers_4_0,
- Opt_vers_4_1, Opt_vers_4_2,
-
- Opt_vers_err
-};
-
-static match_table_t nfs_vers_tokens = {
- { Opt_vers_2, "2" },
- { Opt_vers_3, "3" },
- { Opt_vers_4, "4" },
- { Opt_vers_4_0, "4.0" },
- { Opt_vers_4_1, "4.1" },
- { Opt_vers_4_2, "4.2" },
-
- { Opt_vers_err, NULL }
-};
static struct dentry *nfs_prepared_mount(struct file_system_type *fs_type,
int flags, const char *dev_name, void *raw_data);
@@ -332,10 +109,6 @@ const struct super_operations nfs_sops = {
EXPORT_SYMBOL_GPL(nfs_sops);
#if IS_ENABLED(CONFIG_NFS_V4)
-static void nfs4_validate_mount_flags(struct nfs_parsed_mount_data *);
-static int nfs4_validate_mount_data(void *options,
- struct nfs_parsed_mount_data *args, const char *dev_name);
-
struct file_system_type nfs4_fs_type = {
.owner = THIS_MODULE,
.name = "nfs4",
@@ -932,141 +705,6 @@ void nfs_umount_begin(struct super_block *sb)
}
EXPORT_SYMBOL_GPL(nfs_umount_begin);
-static struct nfs_parsed_mount_data *nfs_alloc_parsed_mount_data(void)
-{
- struct nfs_parsed_mount_data *data;
-
- data = kzalloc(sizeof(*data), GFP_KERNEL);
- if (data) {
- data->timeo = NFS_UNSPEC_TIMEO;
- data->retrans = NFS_UNSPEC_RETRANS;
- data->acregmin = NFS_DEF_ACREGMIN;
- data->acregmax = NFS_DEF_ACREGMAX;
- data->acdirmin = NFS_DEF_ACDIRMIN;
- data->acdirmax = NFS_DEF_ACDIRMAX;
- data->mount_server.port = NFS_UNSPEC_PORT;
- data->nfs_server.port = NFS_UNSPEC_PORT;
- data->nfs_server.protocol = XPRT_TRANSPORT_TCP;
- data->selected_flavor = RPC_AUTH_MAXFLAVOR;
- data->minorversion = 0;
- data->need_mount = true;
- data->net = current->nsproxy->net_ns;
- data->lsm_opts = NULL;
- }
- return data;
-}
-
-static void nfs_free_parsed_mount_data(struct nfs_parsed_mount_data *data)
-{
- if (data) {
- kfree(data->client_address);
- kfree(data->mount_server.hostname);
- kfree(data->nfs_server.export_path);
- kfree(data->nfs_server.hostname);
- kfree(data->fscache_uniq);
- security_free_mnt_opts(&data->lsm_opts);
- kfree(data);
- }
-}
-
-/*
- * Sanity-check a server address provided by the mount command.
- *
- * Address family must be initialized, and address must not be
- * the ANY address for that family.
- */
-static int nfs_verify_server_address(struct sockaddr *addr)
-{
- switch (addr->sa_family) {
- case AF_INET: {
- struct sockaddr_in *sa = (struct sockaddr_in *)addr;
- return sa->sin_addr.s_addr != htonl(INADDR_ANY);
- }
- case AF_INET6: {
- struct in6_addr *sa = &((struct sockaddr_in6 *)addr)->sin6_addr;
- return !ipv6_addr_any(sa);
- }
- }
-
- dfprintk(MOUNT, "NFS: Invalid IP address specified\n");
- return 0;
-}
-
-/*
- * Select between a default port value and a user-specified port value.
- * If a zero value is set, then autobind will be used.
- */
-static void nfs_set_port(struct sockaddr *sap, int *port,
- const unsigned short default_port)
-{
- if (*port == NFS_UNSPEC_PORT)
- *port = default_port;
-
- rpc_set_port(sap, *port);
-}
-
-/*
- * Sanity check the NFS transport protocol.
- *
- */
-static void nfs_validate_transport_protocol(struct nfs_parsed_mount_data *mnt)
-{
- switch (mnt->nfs_server.protocol) {
- case XPRT_TRANSPORT_UDP:
- case XPRT_TRANSPORT_TCP:
- case XPRT_TRANSPORT_RDMA:
- break;
- default:
- mnt->nfs_server.protocol = XPRT_TRANSPORT_TCP;
- }
-}
-
-/*
- * For text based NFSv2/v3 mounts, the mount protocol transport default
- * settings should depend upon the specified NFS transport.
- */
-static void nfs_set_mount_transport_protocol(struct nfs_parsed_mount_data *mnt)
-{
- nfs_validate_transport_protocol(mnt);
-
- if (mnt->mount_server.protocol == XPRT_TRANSPORT_UDP ||
- mnt->mount_server.protocol == XPRT_TRANSPORT_TCP)
- return;
- switch (mnt->nfs_server.protocol) {
- case XPRT_TRANSPORT_UDP:
- mnt->mount_server.protocol = XPRT_TRANSPORT_UDP;
- break;
- case XPRT_TRANSPORT_TCP:
- case XPRT_TRANSPORT_RDMA:
- mnt->mount_server.protocol = XPRT_TRANSPORT_TCP;
- }
-}
-
-/*
- * Add 'flavor' to 'auth_info' if not already present.
- * Returns true if 'flavor' ends up in the list, false otherwise
- */
-static bool nfs_auth_info_add(struct nfs_auth_info *auth_info,
- rpc_authflavor_t flavor)
-{
- unsigned int i;
- unsigned int max_flavor_len = ARRAY_SIZE(auth_info->flavors);
-
- /* make sure this flavor isn't already in the list */
- for (i = 0; i < auth_info->flavor_len; i++) {
- if (flavor == auth_info->flavors[i])
- return true;
- }
-
- if (auth_info->flavor_len + 1 >= max_flavor_len) {
- dfprintk(MOUNT, "NFS: too many sec= flavors\n");
- return false;
- }
-
- auth_info->flavors[auth_info->flavor_len++] = flavor;
- return true;
-}
-
/*
* Return true if 'match' is in auth_info or auth_info is empty.
* Return false otherwise.
@@ -1087,627 +725,6 @@ bool nfs_auth_info_match(const struct nfs_auth_info *auth_info,
}
EXPORT_SYMBOL_GPL(nfs_auth_info_match);
-/*
- * Parse the value of the 'sec=' option.
- */
-static int nfs_parse_security_flavors(char *value,
- struct nfs_parsed_mount_data *mnt)
-{
- substring_t args[MAX_OPT_ARGS];
- rpc_authflavor_t pseudoflavor;
- char *p;
-
- dfprintk(MOUNT, "NFS: parsing sec=%s option\n", value);
-
- while ((p = strsep(&value, ":")) != NULL) {
- switch (match_token(p, nfs_secflavor_tokens, args)) {
- case Opt_sec_none:
- pseudoflavor = RPC_AUTH_NULL;
- break;
- case Opt_sec_sys:
- pseudoflavor = RPC_AUTH_UNIX;
- break;
- case Opt_sec_krb5:
- pseudoflavor = RPC_AUTH_GSS_KRB5;
- break;
- case Opt_sec_krb5i:
- pseudoflavor = RPC_AUTH_GSS_KRB5I;
- break;
- case Opt_sec_krb5p:
- pseudoflavor = RPC_AUTH_GSS_KRB5P;
- break;
- case Opt_sec_lkey:
- pseudoflavor = RPC_AUTH_GSS_LKEY;
- break;
- case Opt_sec_lkeyi:
- pseudoflavor = RPC_AUTH_GSS_LKEYI;
- break;
- case Opt_sec_lkeyp:
- pseudoflavor = RPC_AUTH_GSS_LKEYP;
- break;
- case Opt_sec_spkm:
- pseudoflavor = RPC_AUTH_GSS_SPKM;
- break;
- case Opt_sec_spkmi:
- pseudoflavor = RPC_AUTH_GSS_SPKMI;
- break;
- case Opt_sec_spkmp:
- pseudoflavor = RPC_AUTH_GSS_SPKMP;
- break;
- default:
- dfprintk(MOUNT,
- "NFS: sec= option '%s' not recognized\n", p);
- return 0;
- }
-
- if (!nfs_auth_info_add(&mnt->auth_info, pseudoflavor))
- return 0;
- }
-
- return 1;
-}
-
-static int nfs_parse_version_string(char *string,
- struct nfs_parsed_mount_data *mnt,
- substring_t *args)
-{
- mnt->flags &= ~NFS_MOUNT_VER3;
- switch (match_token(string, nfs_vers_tokens, args)) {
- case Opt_vers_2:
- mnt->version = 2;
- break;
- case Opt_vers_3:
- mnt->flags |= NFS_MOUNT_VER3;
- mnt->version = 3;
- break;
- case Opt_vers_4:
- /* Backward compatibility option. In future,
- * the mount program should always supply
- * a NFSv4 minor version number.
- */
- mnt->version = 4;
- break;
- case Opt_vers_4_0:
- mnt->version = 4;
- mnt->minorversion = 0;
- break;
- case Opt_vers_4_1:
- mnt->version = 4;
- mnt->minorversion = 1;
- break;
- case Opt_vers_4_2:
- mnt->version = 4;
- mnt->minorversion = 2;
- break;
- default:
- return 0;
- }
- return 1;
-}
-
-static int nfs_get_option_str(substring_t args[], char **option)
-{
- kfree(*option);
- *option = match_strdup(args);
- return !*option;
-}
-
-static int nfs_get_option_ul(substring_t args[], unsigned long *option)
-{
- int rc;
- char *string;
-
- string = match_strdup(args);
- if (string == NULL)
- return -ENOMEM;
- rc = kstrtoul(string, 10, option);
- kfree(string);
-
- return rc;
-}
-
-static int nfs_get_option_ul_bound(substring_t args[], unsigned long *option,
- unsigned long l_bound, unsigned long u_bound)
-{
- int ret;
-
- ret = nfs_get_option_ul(args, option);
- if (ret != 0)
- return ret;
- if (*option < l_bound || *option > u_bound)
- return -ERANGE;
- return 0;
-}
-
-/*
- * Error-check and convert a string of mount options from user space into
- * a data structure. The whole mount string is processed; bad options are
- * skipped as they are encountered. If there were no errors, return 1;
- * otherwise return 0 (zero).
- */
-static int nfs_parse_mount_options(char *raw,
- struct nfs_parsed_mount_data *mnt)
-{
- char *p, *string;
- int rc, sloppy = 0, invalid_option = 0;
- unsigned short protofamily = AF_UNSPEC;
- unsigned short mountfamily = AF_UNSPEC;
-
- if (!raw) {
- dfprintk(MOUNT, "NFS: mount options string was NULL.\n");
- return 1;
- }
- dfprintk(MOUNT, "NFS: nfs mount opts='%s'\n", raw);
-
- rc = security_sb_eat_lsm_opts(raw, &mnt->lsm_opts);
- if (rc)
- goto out_security_failure;
-
- while ((p = strsep(&raw, ",")) != NULL) {
- substring_t args[MAX_OPT_ARGS];
- unsigned long option;
- int token;
-
- if (!*p)
- continue;
-
- dfprintk(MOUNT, "NFS: parsing nfs mount option '%s'\n", p);
-
- token = match_token(p, nfs_mount_option_tokens, args);
- switch (token) {
-
- /*
- * boolean options: foo/nofoo
- */
- case Opt_soft:
- mnt->flags |= NFS_MOUNT_SOFT;
- mnt->flags &= ~NFS_MOUNT_SOFTERR;
- break;
- case Opt_softerr:
- mnt->flags |= NFS_MOUNT_SOFTERR;
- mnt->flags &= ~NFS_MOUNT_SOFT;
- break;
- case Opt_hard:
- mnt->flags &= ~(NFS_MOUNT_SOFT|NFS_MOUNT_SOFTERR);
- break;
- case Opt_posix:
- mnt->flags |= NFS_MOUNT_POSIX;
- break;
- case Opt_noposix:
- mnt->flags &= ~NFS_MOUNT_POSIX;
- break;
- case Opt_cto:
- mnt->flags &= ~NFS_MOUNT_NOCTO;
- break;
- case Opt_nocto:
- mnt->flags |= NFS_MOUNT_NOCTO;
- break;
- case Opt_ac:
- mnt->flags &= ~NFS_MOUNT_NOAC;
- break;
- case Opt_noac:
- mnt->flags |= NFS_MOUNT_NOAC;
- break;
- case Opt_lock:
- mnt->flags &= ~NFS_MOUNT_NONLM;
- mnt->flags &= ~(NFS_MOUNT_LOCAL_FLOCK |
- NFS_MOUNT_LOCAL_FCNTL);
- break;
- case Opt_nolock:
- mnt->flags |= NFS_MOUNT_NONLM;
- mnt->flags |= (NFS_MOUNT_LOCAL_FLOCK |
- NFS_MOUNT_LOCAL_FCNTL);
- break;
- case Opt_udp:
- mnt->flags &= ~NFS_MOUNT_TCP;
- mnt->nfs_server.protocol = XPRT_TRANSPORT_UDP;
- break;
- case Opt_tcp:
- mnt->flags |= NFS_MOUNT_TCP;
- mnt->nfs_server.protocol = XPRT_TRANSPORT_TCP;
- break;
- case Opt_rdma:
- mnt->flags |= NFS_MOUNT_TCP; /* for side protocols */
- mnt->nfs_server.protocol = XPRT_TRANSPORT_RDMA;
- xprt_load_transport(p);
- break;
- case Opt_acl:
- mnt->flags &= ~NFS_MOUNT_NOACL;
- break;
- case Opt_noacl:
- mnt->flags |= NFS_MOUNT_NOACL;
- break;
- case Opt_rdirplus:
- mnt->flags &= ~NFS_MOUNT_NORDIRPLUS;
- break;
- case Opt_nordirplus:
- mnt->flags |= NFS_MOUNT_NORDIRPLUS;
- break;
- case Opt_sharecache:
- mnt->flags &= ~NFS_MOUNT_UNSHARED;
- break;
- case Opt_nosharecache:
- mnt->flags |= NFS_MOUNT_UNSHARED;
- break;
- case Opt_resvport:
- mnt->flags &= ~NFS_MOUNT_NORESVPORT;
- break;
- case Opt_noresvport:
- mnt->flags |= NFS_MOUNT_NORESVPORT;
- break;
- case Opt_fscache:
- mnt->options |= NFS_OPTION_FSCACHE;
- kfree(mnt->fscache_uniq);
- mnt->fscache_uniq = NULL;
- break;
- case Opt_nofscache:
- mnt->options &= ~NFS_OPTION_FSCACHE;
- kfree(mnt->fscache_uniq);
- mnt->fscache_uniq = NULL;
- break;
- case Opt_migration:
- mnt->options |= NFS_OPTION_MIGRATION;
- break;
- case Opt_nomigration:
- mnt->options &= ~NFS_OPTION_MIGRATION;
- break;
-
- /*
- * options that take numeric values
- */
- case Opt_port:
- if (nfs_get_option_ul(args, &option) ||
- option > USHRT_MAX)
- goto out_invalid_value;
- mnt->nfs_server.port = option;
- break;
- case Opt_rsize:
- if (nfs_get_option_ul(args, &option))
- goto out_invalid_value;
- mnt->rsize = option;
- break;
- case Opt_wsize:
- if (nfs_get_option_ul(args, &option))
- goto out_invalid_value;
- mnt->wsize = option;
- break;
- case Opt_bsize:
- if (nfs_get_option_ul(args, &option))
- goto out_invalid_value;
- mnt->bsize = option;
- break;
- case Opt_timeo:
- if (nfs_get_option_ul_bound(args, &option, 1, INT_MAX))
- goto out_invalid_value;
- mnt->timeo = option;
- break;
- case Opt_retrans:
- if (nfs_get_option_ul_bound(args, &option, 0, INT_MAX))
- goto out_invalid_value;
- mnt->retrans = option;
- break;
- case Opt_acregmin:
- if (nfs_get_option_ul(args, &option))
- goto out_invalid_value;
- mnt->acregmin = option;
- break;
- case Opt_acregmax:
- if (nfs_get_option_ul(args, &option))
- goto out_invalid_value;
- mnt->acregmax = option;
- break;
- case Opt_acdirmin:
- if (nfs_get_option_ul(args, &option))
- goto out_invalid_value;
- mnt->acdirmin = option;
- break;
- case Opt_acdirmax:
- if (nfs_get_option_ul(args, &option))
- goto out_invalid_value;
- mnt->acdirmax = option;
- break;
- case Opt_actimeo:
- if (nfs_get_option_ul(args, &option))
- goto out_invalid_value;
- mnt->acregmin = mnt->acregmax =
- mnt->acdirmin = mnt->acdirmax = option;
- break;
- case Opt_namelen:
- if (nfs_get_option_ul(args, &option))
- goto out_invalid_value;
- mnt->namlen = option;
- break;
- case Opt_mountport:
- if (nfs_get_option_ul(args, &option) ||
- option > USHRT_MAX)
- goto out_invalid_value;
- mnt->mount_server.port = option;
- break;
- case Opt_mountvers:
- if (nfs_get_option_ul(args, &option) ||
- option < NFS_MNT_VERSION ||
- option > NFS_MNT3_VERSION)
- goto out_invalid_value;
- mnt->mount_server.version = option;
- break;
- case Opt_minorversion:
- if (nfs_get_option_ul(args, &option))
- goto out_invalid_value;
- if (option > NFS4_MAX_MINOR_VERSION)
- goto out_invalid_value;
- mnt->minorversion = option;
- break;
-
- /*
- * options that take text values
- */
- case Opt_nfsvers:
- string = match_strdup(args);
- if (string == NULL)
- goto out_nomem;
- rc = nfs_parse_version_string(string, mnt, args);
- kfree(string);
- if (!rc)
- goto out_invalid_value;
- break;
- case Opt_sec:
- string = match_strdup(args);
- if (string == NULL)
- goto out_nomem;
- rc = nfs_parse_security_flavors(string, mnt);
- kfree(string);
- if (!rc) {
- dfprintk(MOUNT, "NFS: unrecognized "
- "security flavor\n");
- return 0;
- }
- break;
- case Opt_proto:
- string = match_strdup(args);
- if (string == NULL)
- goto out_nomem;
- token = match_token(string,
- nfs_xprt_protocol_tokens, args);
-
- protofamily = AF_INET;
- switch (token) {
- case Opt_xprt_udp6:
- protofamily = AF_INET6;
- /* fall through */
- case Opt_xprt_udp:
- mnt->flags &= ~NFS_MOUNT_TCP;
- mnt->nfs_server.protocol = XPRT_TRANSPORT_UDP;
- break;
- case Opt_xprt_tcp6:
- protofamily = AF_INET6;
- /* fall through */
- case Opt_xprt_tcp:
- mnt->flags |= NFS_MOUNT_TCP;
- mnt->nfs_server.protocol = XPRT_TRANSPORT_TCP;
- break;
- case Opt_xprt_rdma6:
- protofamily = AF_INET6;
- /* fall through */
- case Opt_xprt_rdma:
- /* vector side protocols to TCP */
- mnt->flags |= NFS_MOUNT_TCP;
- mnt->nfs_server.protocol = XPRT_TRANSPORT_RDMA;
- xprt_load_transport(string);
- break;
- default:
- dfprintk(MOUNT, "NFS: unrecognized "
- "transport protocol\n");
- kfree(string);
- return 0;
- }
- kfree(string);
- break;
- case Opt_mountproto:
- string = match_strdup(args);
- if (string == NULL)
- goto out_nomem;
- token = match_token(string,
- nfs_xprt_protocol_tokens, args);
- kfree(string);
-
- mountfamily = AF_INET;
- switch (token) {
- case Opt_xprt_udp6:
- mountfamily = AF_INET6;
- /* fall through */
- case Opt_xprt_udp:
- mnt->mount_server.protocol = XPRT_TRANSPORT_UDP;
- break;
- case Opt_xprt_tcp6:
- mountfamily = AF_INET6;
- /* fall through */
- case Opt_xprt_tcp:
- mnt->mount_server.protocol = XPRT_TRANSPORT_TCP;
- break;
- case Opt_xprt_rdma: /* not used for side protocols */
- default:
- dfprintk(MOUNT, "NFS: unrecognized "
- "transport protocol\n");
- return 0;
- }
- break;
- case Opt_addr:
- string = match_strdup(args);
- if (string == NULL)
- goto out_nomem;
- mnt->nfs_server.addrlen =
- rpc_pton(mnt->net, string, strlen(string),
- (struct sockaddr *)
- &mnt->nfs_server.address,
- sizeof(mnt->nfs_server.address));
- kfree(string);
- if (mnt->nfs_server.addrlen == 0)
- goto out_invalid_address;
- break;
- case Opt_clientaddr:
- if (nfs_get_option_str(args, &mnt->client_address))
- goto out_nomem;
- break;
- case Opt_mounthost:
- if (nfs_get_option_str(args,
- &mnt->mount_server.hostname))
- goto out_nomem;
- break;
- case Opt_mountaddr:
- string = match_strdup(args);
- if (string == NULL)
- goto out_nomem;
- mnt->mount_server.addrlen =
- rpc_pton(mnt->net, string, strlen(string),
- (struct sockaddr *)
- &mnt->mount_server.address,
- sizeof(mnt->mount_server.address));
- kfree(string);
- if (mnt->mount_server.addrlen == 0)
- goto out_invalid_address;
- break;
- case Opt_nconnect:
- if (nfs_get_option_ul_bound(args, &option, 1, NFS_MAX_CONNECTIONS))
- goto out_invalid_value;
- mnt->nfs_server.nconnect = option;
- break;
- case Opt_lookupcache:
- string = match_strdup(args);
- if (string == NULL)
- goto out_nomem;
- token = match_token(string,
- nfs_lookupcache_tokens, args);
- kfree(string);
- switch (token) {
- case Opt_lookupcache_all:
- mnt->flags &= ~(NFS_MOUNT_LOOKUP_CACHE_NONEG|NFS_MOUNT_LOOKUP_CACHE_NONE);
- break;
- case Opt_lookupcache_positive:
- mnt->flags &= ~NFS_MOUNT_LOOKUP_CACHE_NONE;
- mnt->flags |= NFS_MOUNT_LOOKUP_CACHE_NONEG;
- break;
- case Opt_lookupcache_none:
- mnt->flags |= NFS_MOUNT_LOOKUP_CACHE_NONEG|NFS_MOUNT_LOOKUP_CACHE_NONE;
- break;
- default:
- dfprintk(MOUNT, "NFS: invalid "
- "lookupcache argument\n");
- return 0;
- };
- break;
- case Opt_fscache_uniq:
- if (nfs_get_option_str(args, &mnt->fscache_uniq))
- goto out_nomem;
- mnt->options |= NFS_OPTION_FSCACHE;
- break;
- case Opt_local_lock:
- string = match_strdup(args);
- if (string == NULL)
- goto out_nomem;
- token = match_token(string, nfs_local_lock_tokens,
- args);
- kfree(string);
- switch (token) {
- case Opt_local_lock_all:
- mnt->flags |= (NFS_MOUNT_LOCAL_FLOCK |
- NFS_MOUNT_LOCAL_FCNTL);
- break;
- case Opt_local_lock_flock:
- mnt->flags |= NFS_MOUNT_LOCAL_FLOCK;
- break;
- case Opt_local_lock_posix:
- mnt->flags |= NFS_MOUNT_LOCAL_FCNTL;
- break;
- case Opt_local_lock_none:
- mnt->flags &= ~(NFS_MOUNT_LOCAL_FLOCK |
- NFS_MOUNT_LOCAL_FCNTL);
- break;
- default:
- dfprintk(MOUNT, "NFS: invalid "
- "local_lock argument\n");
- return 0;
- };
- break;
-
- /*
- * Special options
- */
- case Opt_sloppy:
- sloppy = 1;
- dfprintk(MOUNT, "NFS: relaxing parsing rules\n");
- break;
- case Opt_userspace:
- case Opt_deprecated:
- dfprintk(MOUNT, "NFS: ignoring mount option "
- "'%s'\n", p);
- break;
-
- default:
- invalid_option = 1;
- dfprintk(MOUNT, "NFS: unrecognized mount option "
- "'%s'\n", p);
- }
- }
-
- if (!sloppy && invalid_option)
- return 0;
-
- if (mnt->minorversion && mnt->version != 4)
- goto out_minorversion_mismatch;
-
- if (mnt->options & NFS_OPTION_MIGRATION &&
- (mnt->version != 4 || mnt->minorversion != 0))
- goto out_migration_misuse;
-
- /*
- * verify that any proto=/mountproto= options match the address
- * families in the addr=/mountaddr= options.
- */
- if (protofamily != AF_UNSPEC &&
- protofamily != mnt->nfs_server.address.ss_family)
- goto out_proto_mismatch;
-
- if (mountfamily != AF_UNSPEC) {
- if (mnt->mount_server.addrlen) {
- if (mountfamily != mnt->mount_server.address.ss_family)
- goto out_mountproto_mismatch;
- } else {
- if (mountfamily != mnt->nfs_server.address.ss_family)
- goto out_mountproto_mismatch;
- }
- }
-
- return 1;
-
-out_mountproto_mismatch:
- printk(KERN_INFO "NFS: mount server address does not match mountproto= "
- "option\n");
- return 0;
-out_proto_mismatch:
- printk(KERN_INFO "NFS: server address does not match proto= option\n");
- return 0;
-out_invalid_address:
- printk(KERN_INFO "NFS: bad IP address specified: %s\n", p);
- return 0;
-out_invalid_value:
- printk(KERN_INFO "NFS: bad mount option value specified: %s\n", p);
- return 0;
-out_minorversion_mismatch:
- printk(KERN_INFO "NFS: mount option vers=%u does not support "
- "minorversion=%u\n", mnt->version, mnt->minorversion);
- return 0;
-out_migration_misuse:
- printk(KERN_INFO
- "NFS: 'migration' not supported for this NFS version\n");
- return 0;
-out_nomem:
- printk(KERN_INFO "NFS: not enough memory to parse option\n");
- return 0;
-out_security_failure:
- printk(KERN_INFO "NFS: security options invalid: %d\n", rc);
- return 0;
-}
-
/*
* Ensure that a specified authtype in args->auth_info is supported by
* the server. Returns 0 and sets args->selected_flavor if it's ok, and
@@ -1908,327 +925,6 @@ struct dentry *nfs_try_mount(int flags, const char *dev_name,
}
EXPORT_SYMBOL_GPL(nfs_try_mount);
-/*
- * Split "dev_name" into "hostname:export_path".
- *
- * The leftmost colon demarks the split between the server's hostname
- * and the export path. If the hostname starts with a left square
- * bracket, then it may contain colons.
- *
- * Note: caller frees hostname and export path, even on error.
- */
-static int nfs_parse_devname(const char *dev_name,
- char **hostname, size_t maxnamlen,
- char **export_path, size_t maxpathlen)
-{
- size_t len;
- char *end;
-
- if (unlikely(!dev_name || !*dev_name)) {
- dfprintk(MOUNT, "NFS: device name not specified\n");
- return -EINVAL;
- }
-
- /* Is the host name protected with square brakcets? */
- if (*dev_name == '[') {
- end = strchr(++dev_name, ']');
- if (end == NULL || end[1] != ':')
- goto out_bad_devname;
-
- len = end - dev_name;
- end++;
- } else {
- char *comma;
-
- end = strchr(dev_name, ':');
- if (end == NULL)
- goto out_bad_devname;
- len = end - dev_name;
-
- /* kill possible hostname list: not supported */
- comma = strchr(dev_name, ',');
- if (comma != NULL && comma < end)
- len = comma - dev_name;
- }
-
- if (len > maxnamlen)
- goto out_hostname;
-
- /* N.B. caller will free nfs_server.hostname in all cases */
- *hostname = kstrndup(dev_name, len, GFP_KERNEL);
- if (*hostname == NULL)
- goto out_nomem;
- len = strlen(++end);
- if (len > maxpathlen)
- goto out_path;
- *export_path = kstrndup(end, len, GFP_KERNEL);
- if (!*export_path)
- goto out_nomem;
-
- dfprintk(MOUNT, "NFS: MNTPATH: '%s'\n", *export_path);
- return 0;
-
-out_bad_devname:
- dfprintk(MOUNT, "NFS: device name not in host:path format\n");
- return -EINVAL;
-
-out_nomem:
- dfprintk(MOUNT, "NFS: not enough memory to parse device name\n");
- return -ENOMEM;
-
-out_hostname:
- dfprintk(MOUNT, "NFS: server hostname too long\n");
- return -ENAMETOOLONG;
-
-out_path:
- dfprintk(MOUNT, "NFS: export pathname too long\n");
- return -ENAMETOOLONG;
-}
-
-/*
- * Validate the NFS2/NFS3 mount data
- * - fills in the mount root filehandle
- *
- * For option strings, user space handles the following behaviors:
- *
- * + DNS: mapping server host name to IP address ("addr=" option)
- *
- * + failure mode: how to behave if a mount request can't be handled
- * immediately ("fg/bg" option)
- *
- * + retry: how often to retry a mount request ("retry=" option)
- *
- * + breaking back: trying proto=udp after proto=tcp, v2 after v3,
- * mountproto=tcp after mountproto=udp, and so on
- */
-static int nfs23_validate_mount_data(void *options,
- struct nfs_parsed_mount_data *args,
- struct nfs_fh *mntfh,
- const char *dev_name)
-{
- struct nfs_mount_data *data = (struct nfs_mount_data *)options;
- struct sockaddr *sap = (struct sockaddr *)&args->nfs_server.address;
- int extra_flags = NFS_MOUNT_LEGACY_INTERFACE;
-
- if (data == NULL)
- goto out_no_data;
-
- args->version = NFS_DEFAULT_VERSION;
- switch (data->version) {
- case 1:
- data->namlen = 0; /* fall through */
- case 2:
- data->bsize = 0; /* fall through */
- case 3:
- if (data->flags & NFS_MOUNT_VER3)
- goto out_no_v3;
- data->root.size = NFS2_FHSIZE;
- memcpy(data->root.data, data->old_root.data, NFS2_FHSIZE);
- /* Turn off security negotiation */
- extra_flags |= NFS_MOUNT_SECFLAVOUR;
- /* fall through */
- case 4:
- if (data->flags & NFS_MOUNT_SECFLAVOUR)
- goto out_no_sec;
- /* fall through */
- case 5:
- memset(data->context, 0, sizeof(data->context));
- /* fall through */
- case 6:
- if (data->flags & NFS_MOUNT_VER3) {
- if (data->root.size > NFS3_FHSIZE || data->root.size == 0)
- goto out_invalid_fh;
- mntfh->size = data->root.size;
- args->version = 3;
- } else {
- mntfh->size = NFS2_FHSIZE;
- args->version = 2;
- }
-
-
- memcpy(mntfh->data, data->root.data, mntfh->size);
- if (mntfh->size < sizeof(mntfh->data))
- memset(mntfh->data + mntfh->size, 0,
- sizeof(mntfh->data) - mntfh->size);
-
- /*
- * Translate to nfs_parsed_mount_data, which nfs_fill_super
- * can deal with.
- */
- args->flags = data->flags & NFS_MOUNT_FLAGMASK;
- args->flags |= extra_flags;
- args->rsize = data->rsize;
- args->wsize = data->wsize;
- args->timeo = data->timeo;
- args->retrans = data->retrans;
- args->acregmin = data->acregmin;
- args->acregmax = data->acregmax;
- args->acdirmin = data->acdirmin;
- args->acdirmax = data->acdirmax;
- args->need_mount = false;
-
- memcpy(sap, &data->addr, sizeof(data->addr));
- args->nfs_server.addrlen = sizeof(data->addr);
- args->nfs_server.port = ntohs(data->addr.sin_port);
- if (sap->sa_family != AF_INET ||
- !nfs_verify_server_address(sap))
- goto out_no_address;
-
- if (!(data->flags & NFS_MOUNT_TCP))
- args->nfs_server.protocol = XPRT_TRANSPORT_UDP;
- /* N.B. caller will free nfs_server.hostname in all cases */
- args->nfs_server.hostname = kstrdup(data->hostname, GFP_KERNEL);
- args->namlen = data->namlen;
- args->bsize = data->bsize;
-
- if (data->flags & NFS_MOUNT_SECFLAVOUR)
- args->selected_flavor = data->pseudoflavor;
- else
- args->selected_flavor = RPC_AUTH_UNIX;
- if (!args->nfs_server.hostname)
- goto out_nomem;
-
- if (!(data->flags & NFS_MOUNT_NONLM))
- args->flags &= ~(NFS_MOUNT_LOCAL_FLOCK|
- NFS_MOUNT_LOCAL_FCNTL);
- else
- args->flags |= (NFS_MOUNT_LOCAL_FLOCK|
- NFS_MOUNT_LOCAL_FCNTL);
- /*
- * The legacy version 6 binary mount data from userspace has a
- * field used only to transport selinux information into the
- * the kernel. To continue to support that functionality we
- * have a touch of selinux knowledge here in the NFS code. The
- * userspace code converted context=blah to just blah so we are
- * converting back to the full string selinux understands.
- */
- if (data->context[0]){
-#ifdef CONFIG_SECURITY_SELINUX
- int rc;
- data->context[NFS_MAX_CONTEXT_LEN] = '\0';
- rc = security_add_mnt_opt("context", data->context,
- strlen(data->context), &args->lsm_opts);
- if (rc)
- return rc;
-#else
- return -EINVAL;
-#endif
- }
-
- break;
- default:
- return NFS_TEXT_DATA;
- }
-
- return 0;
-
-out_no_data:
- dfprintk(MOUNT, "NFS: mount program didn't pass any mount data\n");
- return -EINVAL;
-
-out_no_v3:
- dfprintk(MOUNT, "NFS: nfs_mount_data version %d does not support v3\n",
- data->version);
- return -EINVAL;
-
-out_no_sec:
- dfprintk(MOUNT, "NFS: nfs_mount_data version supports only AUTH_SYS\n");
- return -EINVAL;
-
-out_nomem:
- dfprintk(MOUNT, "NFS: not enough memory to handle mount options\n");
- return -ENOMEM;
-
-out_no_address:
- dfprintk(MOUNT, "NFS: mount program didn't pass remote address\n");
- return -EINVAL;
-
-out_invalid_fh:
- dfprintk(MOUNT, "NFS: invalid root filehandle\n");
- return -EINVAL;
-}
-
-#if IS_ENABLED(CONFIG_NFS_V4)
-static int nfs_validate_mount_data(struct file_system_type *fs_type,
- void *options,
- struct nfs_parsed_mount_data *args,
- struct nfs_fh *mntfh,
- const char *dev_name)
-{
- if (fs_type == &nfs_fs_type)
- return nfs23_validate_mount_data(options, args, mntfh, dev_name);
- return nfs4_validate_mount_data(options, args, dev_name);
-}
-#else
-static int nfs_validate_mount_data(struct file_system_type *fs_type,
- void *options,
- struct nfs_parsed_mount_data *args,
- struct nfs_fh *mntfh,
- const char *dev_name)
-{
- return nfs23_validate_mount_data(options, args, mntfh, dev_name);
-}
-#endif
-
-static int nfs_validate_text_mount_data(void *options,
- struct nfs_parsed_mount_data *args,
- const char *dev_name)
-{
- int port = 0;
- int max_namelen = PAGE_SIZE;
- int max_pathlen = NFS_MAXPATHLEN;
- struct sockaddr *sap = (struct sockaddr *)&args->nfs_server.address;
-
- if (nfs_parse_mount_options((char *)options, args) == 0)
- return -EINVAL;
-
- if (!nfs_verify_server_address(sap))
- goto out_no_address;
-
- if (args->version == 4) {
-#if IS_ENABLED(CONFIG_NFS_V4)
- if (args->nfs_server.protocol == XPRT_TRANSPORT_RDMA)
- port = NFS_RDMA_PORT;
- else
- port = NFS_PORT;
- max_namelen = NFS4_MAXNAMLEN;
- max_pathlen = NFS4_MAXPATHLEN;
- nfs_validate_transport_protocol(args);
- if (args->nfs_server.protocol == XPRT_TRANSPORT_UDP)
- goto out_invalid_transport_udp;
- nfs4_validate_mount_flags(args);
-#else
- goto out_v4_not_compiled;
-#endif /* CONFIG_NFS_V4 */
- } else {
- nfs_set_mount_transport_protocol(args);
- if (args->nfs_server.protocol == XPRT_TRANSPORT_RDMA)
- port = NFS_RDMA_PORT;
- }
-
- nfs_set_port(sap, &args->nfs_server.port, port);
-
- return nfs_parse_devname(dev_name,
- &args->nfs_server.hostname,
- max_namelen,
- &args->nfs_server.export_path,
- max_pathlen);
-
-#if !IS_ENABLED(CONFIG_NFS_V4)
-out_v4_not_compiled:
- dfprintk(MOUNT, "NFS: NFSv4 is not compiled into kernel\n");
- return -EPROTONOSUPPORT;
-#else
-out_invalid_transport_udp:
- dfprintk(MOUNT, "NFSv4: Unsupported transport protocol udp\n");
- return -EINVAL;
-#endif /* !CONFIG_NFS_V4 */
-
-out_no_address:
- dfprintk(MOUNT, "NFS: mount program didn't pass remote address\n");
- return -EINVAL;
-}
-
#define NFS_REMOUNT_CMP_FLAGMASK ~(NFS_MOUNT_INTR \
| NFS_MOUNT_SECURE \
| NFS_MOUNT_TCP \
@@ -2735,113 +1431,6 @@ nfs_prepared_mount(struct file_system_type *fs_type, int flags,
#if IS_ENABLED(CONFIG_NFS_V4)
-static void nfs4_validate_mount_flags(struct nfs_parsed_mount_data *args)
-{
- args->flags &= ~(NFS_MOUNT_NONLM|NFS_MOUNT_NOACL|NFS_MOUNT_VER3|
- NFS_MOUNT_LOCAL_FLOCK|NFS_MOUNT_LOCAL_FCNTL);
-}
-
-/*
- * Validate NFSv4 mount options
- */
-static int nfs4_validate_mount_data(void *options,
- struct nfs_parsed_mount_data *args,
- const char *dev_name)
-{
- struct sockaddr *sap = (struct sockaddr *)&args->nfs_server.address;
- struct nfs4_mount_data *data = (struct nfs4_mount_data *)options;
- char *c;
-
- if (data == NULL)
- goto out_no_data;
-
- args->version = 4;
-
- switch (data->version) {
- case 1:
- if (data->host_addrlen > sizeof(args->nfs_server.address))
- goto out_no_address;
- if (data->host_addrlen == 0)
- goto out_no_address;
- args->nfs_server.addrlen = data->host_addrlen;
- if (copy_from_user(sap, data->host_addr, data->host_addrlen))
- return -EFAULT;
- if (!nfs_verify_server_address(sap))
- goto out_no_address;
- args->nfs_server.port = ntohs(((struct sockaddr_in *)sap)->sin_port);
-
- if (data->auth_flavourlen) {
- rpc_authflavor_t pseudoflavor;
- if (data->auth_flavourlen > 1)
- goto out_inval_auth;
- if (copy_from_user(&pseudoflavor,
- data->auth_flavours,
- sizeof(pseudoflavor)))
- return -EFAULT;
- args->selected_flavor = pseudoflavor;
- } else
- args->selected_flavor = RPC_AUTH_UNIX;
-
- c = strndup_user(data->hostname.data, NFS4_MAXNAMLEN);
- if (IS_ERR(c))
- return PTR_ERR(c);
- args->nfs_server.hostname = c;
-
- c = strndup_user(data->mnt_path.data, NFS4_MAXPATHLEN);
- if (IS_ERR(c))
- return PTR_ERR(c);
- args->nfs_server.export_path = c;
- dfprintk(MOUNT, "NFS: MNTPATH: '%s'\n", c);
-
- c = strndup_user(data->client_addr.data, 16);
- if (IS_ERR(c))
- return PTR_ERR(c);
- args->client_address = c;
-
- /*
- * Translate to nfs_parsed_mount_data, which nfs4_fill_super
- * can deal with.
- */
-
- args->flags = data->flags & NFS4_MOUNT_FLAGMASK;
- args->rsize = data->rsize;
- args->wsize = data->wsize;
- args->timeo = data->timeo;
- args->retrans = data->retrans;
- args->acregmin = data->acregmin;
- args->acregmax = data->acregmax;
- args->acdirmin = data->acdirmin;
- args->acdirmax = data->acdirmax;
- args->nfs_server.protocol = data->proto;
- nfs_validate_transport_protocol(args);
- if (args->nfs_server.protocol == XPRT_TRANSPORT_UDP)
- goto out_invalid_transport_udp;
-
- break;
- default:
- return NFS_TEXT_DATA;
- }
-
- return 0;
-
-out_no_data:
- dfprintk(MOUNT, "NFS4: mount program didn't pass any mount data\n");
- return -EINVAL;
-
-out_inval_auth:
- dfprintk(MOUNT, "NFS4: Invalid number of RPC auth flavours %d\n",
- data->auth_flavourlen);
- return -EINVAL;
-
-out_no_address:
- dfprintk(MOUNT, "NFS4: mount program didn't pass remote address\n");
- return -EINVAL;
-
-out_invalid_transport_udp:
- dfprintk(MOUNT, "NFSv4: Unsupported transport protocol udp\n");
- return -EINVAL;
-}
-
/*
* NFS v4 module parameters need to stay in the
* NFS client for backwards compatibility
--
2.17.2
From: David Howells <[email protected]>
Rename struct nfs_parsed_mount_data to struct nfs_fs_context and rename
pointers to it to "ctx". At some point this will be pointed to by an
fs_context struct's fs_private pointer.
Signed-off-by: David Howells <[email protected]>
Signed-off-by: Al Viro <[email protected]>
---
fs/nfs/client.c | 66 +++----
fs/nfs/fs_context.c | 446 ++++++++++++++++++++++----------------------
fs/nfs/internal.h | 14 +-
fs/nfs/nfs4client.c | 60 +++---
fs/nfs/nfs4super.c | 6 +-
fs/nfs/super.c | 194 +++++++++----------
6 files changed, 393 insertions(+), 393 deletions(-)
diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index 130c065141b3..1afd796a3706 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -648,27 +648,27 @@ EXPORT_SYMBOL_GPL(nfs_init_client);
* Create a version 2 or 3 client
*/
static int nfs_init_server(struct nfs_server *server,
- const struct nfs_parsed_mount_data *data,
+ const struct nfs_fs_context *cfg,
struct nfs_subversion *nfs_mod)
{
struct rpc_timeout timeparms;
struct nfs_client_initdata cl_init = {
- .hostname = data->nfs_server.hostname,
- .addr = (const struct sockaddr *)&data->nfs_server.address,
- .addrlen = data->nfs_server.addrlen,
+ .hostname = cfg->nfs_server.hostname,
+ .addr = (const struct sockaddr *)&cfg->nfs_server.address,
+ .addrlen = cfg->nfs_server.addrlen,
.nfs_mod = nfs_mod,
- .proto = data->nfs_server.protocol,
- .net = data->net,
+ .proto = cfg->nfs_server.protocol,
+ .net = cfg->net,
.timeparms = &timeparms,
.cred = server->cred,
- .nconnect = data->nfs_server.nconnect,
+ .nconnect = cfg->nfs_server.nconnect,
};
struct nfs_client *clp;
int error;
- nfs_init_timeout_values(&timeparms, data->nfs_server.protocol,
- data->timeo, data->retrans);
- if (data->flags & NFS_MOUNT_NORESVPORT)
+ nfs_init_timeout_values(&timeparms, cfg->nfs_server.protocol,
+ cfg->timeo, cfg->retrans);
+ if (cfg->flags & NFS_MOUNT_NORESVPORT)
set_bit(NFS_CS_NORESVPORT, &cl_init.init_flags);
/* Allocate or find a client reference we can use */
@@ -679,46 +679,46 @@ static int nfs_init_server(struct nfs_server *server,
server->nfs_client = clp;
/* Initialise the client representation from the mount data */
- server->flags = data->flags;
- server->options = data->options;
+ server->flags = cfg->flags;
+ server->options = cfg->options;
server->caps |= NFS_CAP_HARDLINKS|NFS_CAP_SYMLINKS|NFS_CAP_FILEID|
NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER|NFS_CAP_OWNER_GROUP|
NFS_CAP_ATIME|NFS_CAP_CTIME|NFS_CAP_MTIME;
- if (data->rsize)
- server->rsize = nfs_block_size(data->rsize, NULL);
- if (data->wsize)
- server->wsize = nfs_block_size(data->wsize, NULL);
+ if (cfg->rsize)
+ server->rsize = nfs_block_size(cfg->rsize, NULL);
+ if (cfg->wsize)
+ server->wsize = nfs_block_size(cfg->wsize, NULL);
- server->acregmin = data->acregmin * HZ;
- server->acregmax = data->acregmax * HZ;
- server->acdirmin = data->acdirmin * HZ;
- server->acdirmax = data->acdirmax * HZ;
+ server->acregmin = cfg->acregmin * HZ;
+ server->acregmax = cfg->acregmax * HZ;
+ server->acdirmin = cfg->acdirmin * HZ;
+ server->acdirmax = cfg->acdirmax * HZ;
/* Start lockd here, before we might error out */
error = nfs_start_lockd(server);
if (error < 0)
goto error;
- server->port = data->nfs_server.port;
- server->auth_info = data->auth_info;
+ server->port = cfg->nfs_server.port;
+ server->auth_info = cfg->auth_info;
error = nfs_init_server_rpcclient(server, &timeparms,
- data->selected_flavor);
+ cfg->selected_flavor);
if (error < 0)
goto error;
/* Preserve the values of mount_server-related mount options */
- if (data->mount_server.addrlen) {
- memcpy(&server->mountd_address, &data->mount_server.address,
- data->mount_server.addrlen);
- server->mountd_addrlen = data->mount_server.addrlen;
+ if (cfg->mount_server.addrlen) {
+ memcpy(&server->mountd_address, &cfg->mount_server.address,
+ cfg->mount_server.addrlen);
+ server->mountd_addrlen = cfg->mount_server.addrlen;
}
- server->mountd_version = data->mount_server.version;
- server->mountd_port = data->mount_server.port;
- server->mountd_protocol = data->mount_server.protocol;
+ server->mountd_version = cfg->mount_server.version;
+ server->mountd_port = cfg->mount_server.port;
+ server->mountd_protocol = cfg->mount_server.protocol;
- server->namelen = data->namlen;
+ server->namelen = cfg->namlen;
return 0;
error:
@@ -959,7 +959,7 @@ struct nfs_server *nfs_create_server(struct nfs_mount_info *mount_info)
goto error;
/* Get a client representation */
- error = nfs_init_server(server, mount_info->parsed, nfs_mod);
+ error = nfs_init_server(server, mount_info->ctx, nfs_mod);
if (error < 0)
goto error;
@@ -970,7 +970,7 @@ struct nfs_server *nfs_create_server(struct nfs_mount_info *mount_info)
if (server->nfs_client->rpc_ops->version == 3) {
if (server->namelen == 0 || server->namelen > NFS3_MAXNAMLEN)
server->namelen = NFS3_MAXNAMLEN;
- if (!(mount_info->parsed->flags & NFS_MOUNT_NORDIRPLUS))
+ if (!(mount_info->ctx->flags & NFS_MOUNT_NORDIRPLUS))
server->caps |= NFS_CAP_READDIRPLUS;
} else {
if (server->namelen == 0 || server->namelen > NFS2_MAXNAMLEN)
diff --git a/fs/nfs/fs_context.c b/fs/nfs/fs_context.c
index de852177eca4..63aa5faed9da 100644
--- a/fs/nfs/fs_context.c
+++ b/fs/nfs/fs_context.c
@@ -242,40 +242,40 @@ static const match_table_t nfs_vers_tokens = {
{ Opt_vers_err, NULL }
};
-struct nfs_parsed_mount_data *nfs_alloc_parsed_mount_data(void)
+struct nfs_fs_context *nfs_alloc_parsed_mount_data(void)
{
- struct nfs_parsed_mount_data *data;
-
- data = kzalloc(sizeof(*data), GFP_KERNEL);
- if (data) {
- data->timeo = NFS_UNSPEC_TIMEO;
- data->retrans = NFS_UNSPEC_RETRANS;
- data->acregmin = NFS_DEF_ACREGMIN;
- data->acregmax = NFS_DEF_ACREGMAX;
- data->acdirmin = NFS_DEF_ACDIRMIN;
- data->acdirmax = NFS_DEF_ACDIRMAX;
- data->mount_server.port = NFS_UNSPEC_PORT;
- data->nfs_server.port = NFS_UNSPEC_PORT;
- data->nfs_server.protocol = XPRT_TRANSPORT_TCP;
- data->selected_flavor = RPC_AUTH_MAXFLAVOR;
- data->minorversion = 0;
- data->need_mount = true;
- data->net = current->nsproxy->net_ns;
- data->lsm_opts = NULL;
+ struct nfs_fs_context *ctx;
+
+ ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
+ if (ctx) {
+ ctx->timeo = NFS_UNSPEC_TIMEO;
+ ctx->retrans = NFS_UNSPEC_RETRANS;
+ ctx->acregmin = NFS_DEF_ACREGMIN;
+ ctx->acregmax = NFS_DEF_ACREGMAX;
+ ctx->acdirmin = NFS_DEF_ACDIRMIN;
+ ctx->acdirmax = NFS_DEF_ACDIRMAX;
+ ctx->mount_server.port = NFS_UNSPEC_PORT;
+ ctx->nfs_server.port = NFS_UNSPEC_PORT;
+ ctx->nfs_server.protocol = XPRT_TRANSPORT_TCP;
+ ctx->selected_flavor = RPC_AUTH_MAXFLAVOR;
+ ctx->minorversion = 0;
+ ctx->need_mount = true;
+ ctx->net = current->nsproxy->net_ns;
+ ctx->lsm_opts = NULL;
}
- return data;
+ return ctx;
}
-void nfs_free_parsed_mount_data(struct nfs_parsed_mount_data *data)
+void nfs_free_parsed_mount_data(struct nfs_fs_context *ctx)
{
- if (data) {
- kfree(data->client_address);
- kfree(data->mount_server.hostname);
- kfree(data->nfs_server.export_path);
- kfree(data->nfs_server.hostname);
- kfree(data->fscache_uniq);
- security_free_mnt_opts(&data->lsm_opts);
- kfree(data);
+ if (ctx) {
+ kfree(ctx->client_address);
+ kfree(ctx->mount_server.hostname);
+ kfree(ctx->nfs_server.export_path);
+ kfree(ctx->nfs_server.hostname);
+ kfree(ctx->fscache_uniq);
+ security_free_mnt_opts(&ctx->lsm_opts);
+ kfree(ctx);
}
}
@@ -306,15 +306,15 @@ static int nfs_verify_server_address(struct sockaddr *addr)
* Sanity check the NFS transport protocol.
*
*/
-static void nfs_validate_transport_protocol(struct nfs_parsed_mount_data *mnt)
+static void nfs_validate_transport_protocol(struct nfs_fs_context *ctx)
{
- switch (mnt->nfs_server.protocol) {
+ switch (ctx->nfs_server.protocol) {
case XPRT_TRANSPORT_UDP:
case XPRT_TRANSPORT_TCP:
case XPRT_TRANSPORT_RDMA:
break;
default:
- mnt->nfs_server.protocol = XPRT_TRANSPORT_TCP;
+ ctx->nfs_server.protocol = XPRT_TRANSPORT_TCP;
}
}
@@ -322,20 +322,20 @@ static void nfs_validate_transport_protocol(struct nfs_parsed_mount_data *mnt)
* For text based NFSv2/v3 mounts, the mount protocol transport default
* settings should depend upon the specified NFS transport.
*/
-static void nfs_set_mount_transport_protocol(struct nfs_parsed_mount_data *mnt)
+static void nfs_set_mount_transport_protocol(struct nfs_fs_context *ctx)
{
- nfs_validate_transport_protocol(mnt);
+ nfs_validate_transport_protocol(ctx);
- if (mnt->mount_server.protocol == XPRT_TRANSPORT_UDP ||
- mnt->mount_server.protocol == XPRT_TRANSPORT_TCP)
+ if (ctx->mount_server.protocol == XPRT_TRANSPORT_UDP ||
+ ctx->mount_server.protocol == XPRT_TRANSPORT_TCP)
return;
- switch (mnt->nfs_server.protocol) {
+ switch (ctx->nfs_server.protocol) {
case XPRT_TRANSPORT_UDP:
- mnt->mount_server.protocol = XPRT_TRANSPORT_UDP;
+ ctx->mount_server.protocol = XPRT_TRANSPORT_UDP;
break;
case XPRT_TRANSPORT_TCP:
case XPRT_TRANSPORT_RDMA:
- mnt->mount_server.protocol = XPRT_TRANSPORT_TCP;
+ ctx->mount_server.protocol = XPRT_TRANSPORT_TCP;
}
}
@@ -367,8 +367,7 @@ static bool nfs_auth_info_add(struct nfs_auth_info *auth_info,
/*
* Parse the value of the 'sec=' option.
*/
-static int nfs_parse_security_flavors(char *value,
- struct nfs_parsed_mount_data *mnt)
+static int nfs_parse_security_flavors(char *value, struct nfs_fs_context *ctx)
{
substring_t args[MAX_OPT_ARGS];
rpc_authflavor_t pseudoflavor;
@@ -417,7 +416,7 @@ static int nfs_parse_security_flavors(char *value,
return 0;
}
- if (!nfs_auth_info_add(&mnt->auth_info, pseudoflavor))
+ if (!nfs_auth_info_add(&ctx->auth_info, pseudoflavor))
return 0;
}
@@ -425,36 +424,36 @@ static int nfs_parse_security_flavors(char *value,
}
static int nfs_parse_version_string(char *string,
- struct nfs_parsed_mount_data *mnt,
+ struct nfs_fs_context *ctx,
substring_t *args)
{
- mnt->flags &= ~NFS_MOUNT_VER3;
+ ctx->flags &= ~NFS_MOUNT_VER3;
switch (match_token(string, nfs_vers_tokens, args)) {
case Opt_vers_2:
- mnt->version = 2;
+ ctx->version = 2;
break;
case Opt_vers_3:
- mnt->flags |= NFS_MOUNT_VER3;
- mnt->version = 3;
+ ctx->flags |= NFS_MOUNT_VER3;
+ ctx->version = 3;
break;
case Opt_vers_4:
/* Backward compatibility option. In future,
* the mount program should always supply
* a NFSv4 minor version number.
*/
- mnt->version = 4;
+ ctx->version = 4;
break;
case Opt_vers_4_0:
- mnt->version = 4;
- mnt->minorversion = 0;
+ ctx->version = 4;
+ ctx->minorversion = 0;
break;
case Opt_vers_4_1:
- mnt->version = 4;
- mnt->minorversion = 1;
+ ctx->version = 4;
+ ctx->minorversion = 1;
break;
case Opt_vers_4_2:
- mnt->version = 4;
- mnt->minorversion = 2;
+ ctx->version = 4;
+ ctx->minorversion = 2;
break;
default:
return 0;
@@ -502,7 +501,7 @@ static int nfs_get_option_ul_bound(substring_t args[], unsigned long *option,
* skipped as they are encountered. If there were no errors, return 1;
* otherwise return 0 (zero).
*/
-int nfs_parse_mount_options(char *raw, struct nfs_parsed_mount_data *mnt)
+int nfs_parse_mount_options(char *raw, struct nfs_fs_context *ctx)
{
char *p, *string;
int rc, sloppy = 0, invalid_option = 0;
@@ -515,7 +514,7 @@ int nfs_parse_mount_options(char *raw, struct nfs_parsed_mount_data *mnt)
}
dfprintk(MOUNT, "NFS: nfs mount opts='%s'\n", raw);
- rc = security_sb_eat_lsm_opts(raw, &mnt->lsm_opts);
+ rc = security_sb_eat_lsm_opts(raw, &ctx->lsm_opts);
if (rc)
goto out_security_failure;
@@ -536,96 +535,96 @@ int nfs_parse_mount_options(char *raw, struct nfs_parsed_mount_data *mnt)
* boolean options: foo/nofoo
*/
case Opt_soft:
- mnt->flags |= NFS_MOUNT_SOFT;
- mnt->flags &= ~NFS_MOUNT_SOFTERR;
+ ctx->flags |= NFS_MOUNT_SOFT;
+ ctx->flags &= ~NFS_MOUNT_SOFTERR;
break;
case Opt_softerr:
- mnt->flags |= NFS_MOUNT_SOFTERR;
- mnt->flags &= ~NFS_MOUNT_SOFT;
+ ctx->flags |= NFS_MOUNT_SOFTERR;
+ ctx->flags &= ~NFS_MOUNT_SOFT;
break;
case Opt_hard:
- mnt->flags &= ~(NFS_MOUNT_SOFT|NFS_MOUNT_SOFTERR);
+ ctx->flags &= ~(NFS_MOUNT_SOFT|NFS_MOUNT_SOFTERR);
break;
case Opt_posix:
- mnt->flags |= NFS_MOUNT_POSIX;
+ ctx->flags |= NFS_MOUNT_POSIX;
break;
case Opt_noposix:
- mnt->flags &= ~NFS_MOUNT_POSIX;
+ ctx->flags &= ~NFS_MOUNT_POSIX;
break;
case Opt_cto:
- mnt->flags &= ~NFS_MOUNT_NOCTO;
+ ctx->flags &= ~NFS_MOUNT_NOCTO;
break;
case Opt_nocto:
- mnt->flags |= NFS_MOUNT_NOCTO;
+ ctx->flags |= NFS_MOUNT_NOCTO;
break;
case Opt_ac:
- mnt->flags &= ~NFS_MOUNT_NOAC;
+ ctx->flags &= ~NFS_MOUNT_NOAC;
break;
case Opt_noac:
- mnt->flags |= NFS_MOUNT_NOAC;
+ ctx->flags |= NFS_MOUNT_NOAC;
break;
case Opt_lock:
- mnt->flags &= ~NFS_MOUNT_NONLM;
- mnt->flags &= ~(NFS_MOUNT_LOCAL_FLOCK |
+ ctx->flags &= ~NFS_MOUNT_NONLM;
+ ctx->flags &= ~(NFS_MOUNT_LOCAL_FLOCK |
NFS_MOUNT_LOCAL_FCNTL);
break;
case Opt_nolock:
- mnt->flags |= NFS_MOUNT_NONLM;
- mnt->flags |= (NFS_MOUNT_LOCAL_FLOCK |
+ ctx->flags |= NFS_MOUNT_NONLM;
+ ctx->flags |= (NFS_MOUNT_LOCAL_FLOCK |
NFS_MOUNT_LOCAL_FCNTL);
break;
case Opt_udp:
- mnt->flags &= ~NFS_MOUNT_TCP;
- mnt->nfs_server.protocol = XPRT_TRANSPORT_UDP;
+ ctx->flags &= ~NFS_MOUNT_TCP;
+ ctx->nfs_server.protocol = XPRT_TRANSPORT_UDP;
break;
case Opt_tcp:
- mnt->flags |= NFS_MOUNT_TCP;
- mnt->nfs_server.protocol = XPRT_TRANSPORT_TCP;
+ ctx->flags |= NFS_MOUNT_TCP;
+ ctx->nfs_server.protocol = XPRT_TRANSPORT_TCP;
break;
case Opt_rdma:
- mnt->flags |= NFS_MOUNT_TCP; /* for side protocols */
- mnt->nfs_server.protocol = XPRT_TRANSPORT_RDMA;
+ ctx->flags |= NFS_MOUNT_TCP; /* for side protocols */
+ ctx->nfs_server.protocol = XPRT_TRANSPORT_RDMA;
xprt_load_transport(p);
break;
case Opt_acl:
- mnt->flags &= ~NFS_MOUNT_NOACL;
+ ctx->flags &= ~NFS_MOUNT_NOACL;
break;
case Opt_noacl:
- mnt->flags |= NFS_MOUNT_NOACL;
+ ctx->flags |= NFS_MOUNT_NOACL;
break;
case Opt_rdirplus:
- mnt->flags &= ~NFS_MOUNT_NORDIRPLUS;
+ ctx->flags &= ~NFS_MOUNT_NORDIRPLUS;
break;
case Opt_nordirplus:
- mnt->flags |= NFS_MOUNT_NORDIRPLUS;
+ ctx->flags |= NFS_MOUNT_NORDIRPLUS;
break;
case Opt_sharecache:
- mnt->flags &= ~NFS_MOUNT_UNSHARED;
+ ctx->flags &= ~NFS_MOUNT_UNSHARED;
break;
case Opt_nosharecache:
- mnt->flags |= NFS_MOUNT_UNSHARED;
+ ctx->flags |= NFS_MOUNT_UNSHARED;
break;
case Opt_resvport:
- mnt->flags &= ~NFS_MOUNT_NORESVPORT;
+ ctx->flags &= ~NFS_MOUNT_NORESVPORT;
break;
case Opt_noresvport:
- mnt->flags |= NFS_MOUNT_NORESVPORT;
+ ctx->flags |= NFS_MOUNT_NORESVPORT;
break;
case Opt_fscache:
- mnt->options |= NFS_OPTION_FSCACHE;
- kfree(mnt->fscache_uniq);
- mnt->fscache_uniq = NULL;
+ ctx->options |= NFS_OPTION_FSCACHE;
+ kfree(ctx->fscache_uniq);
+ ctx->fscache_uniq = NULL;
break;
case Opt_nofscache:
- mnt->options &= ~NFS_OPTION_FSCACHE;
- kfree(mnt->fscache_uniq);
- mnt->fscache_uniq = NULL;
+ ctx->options &= ~NFS_OPTION_FSCACHE;
+ kfree(ctx->fscache_uniq);
+ ctx->fscache_uniq = NULL;
break;
case Opt_migration:
- mnt->options |= NFS_OPTION_MIGRATION;
+ ctx->options |= NFS_OPTION_MIGRATION;
break;
case Opt_nomigration:
- mnt->options &= ~NFS_OPTION_MIGRATION;
+ ctx->options &= ~NFS_OPTION_MIGRATION;
break;
/*
@@ -635,83 +634,83 @@ int nfs_parse_mount_options(char *raw, struct nfs_parsed_mount_data *mnt)
if (nfs_get_option_ul(args, &option) ||
option > USHRT_MAX)
goto out_invalid_value;
- mnt->nfs_server.port = option;
+ ctx->nfs_server.port = option;
break;
case Opt_rsize:
if (nfs_get_option_ul(args, &option))
goto out_invalid_value;
- mnt->rsize = option;
+ ctx->rsize = option;
break;
case Opt_wsize:
if (nfs_get_option_ul(args, &option))
goto out_invalid_value;
- mnt->wsize = option;
+ ctx->wsize = option;
break;
case Opt_bsize:
if (nfs_get_option_ul(args, &option))
goto out_invalid_value;
- mnt->bsize = option;
+ ctx->bsize = option;
break;
case Opt_timeo:
if (nfs_get_option_ul_bound(args, &option, 1, INT_MAX))
goto out_invalid_value;
- mnt->timeo = option;
+ ctx->timeo = option;
break;
case Opt_retrans:
if (nfs_get_option_ul_bound(args, &option, 0, INT_MAX))
goto out_invalid_value;
- mnt->retrans = option;
+ ctx->retrans = option;
break;
case Opt_acregmin:
if (nfs_get_option_ul(args, &option))
goto out_invalid_value;
- mnt->acregmin = option;
+ ctx->acregmin = option;
break;
case Opt_acregmax:
if (nfs_get_option_ul(args, &option))
goto out_invalid_value;
- mnt->acregmax = option;
+ ctx->acregmax = option;
break;
case Opt_acdirmin:
if (nfs_get_option_ul(args, &option))
goto out_invalid_value;
- mnt->acdirmin = option;
+ ctx->acdirmin = option;
break;
case Opt_acdirmax:
if (nfs_get_option_ul(args, &option))
goto out_invalid_value;
- mnt->acdirmax = option;
+ ctx->acdirmax = option;
break;
case Opt_actimeo:
if (nfs_get_option_ul(args, &option))
goto out_invalid_value;
- mnt->acregmin = mnt->acregmax =
- mnt->acdirmin = mnt->acdirmax = option;
+ ctx->acregmin = ctx->acregmax =
+ ctx->acdirmin = ctx->acdirmax = option;
break;
case Opt_namelen:
if (nfs_get_option_ul(args, &option))
goto out_invalid_value;
- mnt->namlen = option;
+ ctx->namlen = option;
break;
case Opt_mountport:
if (nfs_get_option_ul(args, &option) ||
option > USHRT_MAX)
goto out_invalid_value;
- mnt->mount_server.port = option;
+ ctx->mount_server.port = option;
break;
case Opt_mountvers:
if (nfs_get_option_ul(args, &option) ||
option < NFS_MNT_VERSION ||
option > NFS_MNT3_VERSION)
goto out_invalid_value;
- mnt->mount_server.version = option;
+ ctx->mount_server.version = option;
break;
case Opt_minorversion:
if (nfs_get_option_ul(args, &option))
goto out_invalid_value;
if (option > NFS4_MAX_MINOR_VERSION)
goto out_invalid_value;
- mnt->minorversion = option;
+ ctx->minorversion = option;
break;
/*
@@ -721,7 +720,7 @@ int nfs_parse_mount_options(char *raw, struct nfs_parsed_mount_data *mnt)
string = match_strdup(args);
if (string == NULL)
goto out_nomem;
- rc = nfs_parse_version_string(string, mnt, args);
+ rc = nfs_parse_version_string(string, ctx, args);
kfree(string);
if (!rc)
goto out_invalid_value;
@@ -730,7 +729,7 @@ int nfs_parse_mount_options(char *raw, struct nfs_parsed_mount_data *mnt)
string = match_strdup(args);
if (string == NULL)
goto out_nomem;
- rc = nfs_parse_security_flavors(string, mnt);
+ rc = nfs_parse_security_flavors(string, ctx);
kfree(string);
if (!rc) {
dfprintk(MOUNT, "NFS: unrecognized "
@@ -751,23 +750,23 @@ int nfs_parse_mount_options(char *raw, struct nfs_parsed_mount_data *mnt)
protofamily = AF_INET6;
/* fall through */
case Opt_xprt_udp:
- mnt->flags &= ~NFS_MOUNT_TCP;
- mnt->nfs_server.protocol = XPRT_TRANSPORT_UDP;
+ ctx->flags &= ~NFS_MOUNT_TCP;
+ ctx->nfs_server.protocol = XPRT_TRANSPORT_UDP;
break;
case Opt_xprt_tcp6:
protofamily = AF_INET6;
/* fall through */
case Opt_xprt_tcp:
- mnt->flags |= NFS_MOUNT_TCP;
- mnt->nfs_server.protocol = XPRT_TRANSPORT_TCP;
+ ctx->flags |= NFS_MOUNT_TCP;
+ ctx->nfs_server.protocol = XPRT_TRANSPORT_TCP;
break;
case Opt_xprt_rdma6:
protofamily = AF_INET6;
/* fall through */
case Opt_xprt_rdma:
/* vector side protocols to TCP */
- mnt->flags |= NFS_MOUNT_TCP;
- mnt->nfs_server.protocol = XPRT_TRANSPORT_RDMA;
+ ctx->flags |= NFS_MOUNT_TCP;
+ ctx->nfs_server.protocol = XPRT_TRANSPORT_RDMA;
xprt_load_transport(string);
break;
default:
@@ -792,13 +791,13 @@ int nfs_parse_mount_options(char *raw, struct nfs_parsed_mount_data *mnt)
mountfamily = AF_INET6;
/* fall through */
case Opt_xprt_udp:
- mnt->mount_server.protocol = XPRT_TRANSPORT_UDP;
+ ctx->mount_server.protocol = XPRT_TRANSPORT_UDP;
break;
case Opt_xprt_tcp6:
mountfamily = AF_INET6;
/* fall through */
case Opt_xprt_tcp:
- mnt->mount_server.protocol = XPRT_TRANSPORT_TCP;
+ ctx->mount_server.protocol = XPRT_TRANSPORT_TCP;
break;
case Opt_xprt_rdma: /* not used for side protocols */
default:
@@ -811,41 +810,41 @@ int nfs_parse_mount_options(char *raw, struct nfs_parsed_mount_data *mnt)
string = match_strdup(args);
if (string == NULL)
goto out_nomem;
- mnt->nfs_server.addrlen =
- rpc_pton(mnt->net, string, strlen(string),
+ ctx->nfs_server.addrlen =
+ rpc_pton(ctx->net, string, strlen(string),
(struct sockaddr *)
- &mnt->nfs_server.address,
- sizeof(mnt->nfs_server.address));
+ &ctx->nfs_server.address,
+ sizeof(ctx->nfs_server.address));
kfree(string);
- if (mnt->nfs_server.addrlen == 0)
+ if (ctx->nfs_server.addrlen == 0)
goto out_invalid_address;
break;
case Opt_clientaddr:
- if (nfs_get_option_str(args, &mnt->client_address))
+ if (nfs_get_option_str(args, &ctx->client_address))
goto out_nomem;
break;
case Opt_mounthost:
if (nfs_get_option_str(args,
- &mnt->mount_server.hostname))
+ &ctx->mount_server.hostname))
goto out_nomem;
break;
case Opt_mountaddr:
string = match_strdup(args);
if (string == NULL)
goto out_nomem;
- mnt->mount_server.addrlen =
- rpc_pton(mnt->net, string, strlen(string),
+ ctx->mount_server.addrlen =
+ rpc_pton(ctx->net, string, strlen(string),
(struct sockaddr *)
- &mnt->mount_server.address,
- sizeof(mnt->mount_server.address));
+ &ctx->mount_server.address,
+ sizeof(ctx->mount_server.address));
kfree(string);
- if (mnt->mount_server.addrlen == 0)
+ if (ctx->mount_server.addrlen == 0)
goto out_invalid_address;
break;
case Opt_nconnect:
if (nfs_get_option_ul_bound(args, &option, 1, NFS_MAX_CONNECTIONS))
goto out_invalid_value;
- mnt->nfs_server.nconnect = option;
+ ctx->nfs_server.nconnect = option;
break;
case Opt_lookupcache:
string = match_strdup(args);
@@ -856,14 +855,14 @@ int nfs_parse_mount_options(char *raw, struct nfs_parsed_mount_data *mnt)
kfree(string);
switch (token) {
case Opt_lookupcache_all:
- mnt->flags &= ~(NFS_MOUNT_LOOKUP_CACHE_NONEG|NFS_MOUNT_LOOKUP_CACHE_NONE);
+ ctx->flags &= ~(NFS_MOUNT_LOOKUP_CACHE_NONEG|NFS_MOUNT_LOOKUP_CACHE_NONE);
break;
case Opt_lookupcache_positive:
- mnt->flags &= ~NFS_MOUNT_LOOKUP_CACHE_NONE;
- mnt->flags |= NFS_MOUNT_LOOKUP_CACHE_NONEG;
+ ctx->flags &= ~NFS_MOUNT_LOOKUP_CACHE_NONE;
+ ctx->flags |= NFS_MOUNT_LOOKUP_CACHE_NONEG;
break;
case Opt_lookupcache_none:
- mnt->flags |= NFS_MOUNT_LOOKUP_CACHE_NONEG|NFS_MOUNT_LOOKUP_CACHE_NONE;
+ ctx->flags |= NFS_MOUNT_LOOKUP_CACHE_NONEG|NFS_MOUNT_LOOKUP_CACHE_NONE;
break;
default:
dfprintk(MOUNT, "NFS: invalid "
@@ -872,9 +871,9 @@ int nfs_parse_mount_options(char *raw, struct nfs_parsed_mount_data *mnt)
};
break;
case Opt_fscache_uniq:
- if (nfs_get_option_str(args, &mnt->fscache_uniq))
+ if (nfs_get_option_str(args, &ctx->fscache_uniq))
goto out_nomem;
- mnt->options |= NFS_OPTION_FSCACHE;
+ ctx->options |= NFS_OPTION_FSCACHE;
break;
case Opt_local_lock:
string = match_strdup(args);
@@ -885,17 +884,17 @@ int nfs_parse_mount_options(char *raw, struct nfs_parsed_mount_data *mnt)
kfree(string);
switch (token) {
case Opt_local_lock_all:
- mnt->flags |= (NFS_MOUNT_LOCAL_FLOCK |
+ ctx->flags |= (NFS_MOUNT_LOCAL_FLOCK |
NFS_MOUNT_LOCAL_FCNTL);
break;
case Opt_local_lock_flock:
- mnt->flags |= NFS_MOUNT_LOCAL_FLOCK;
+ ctx->flags |= NFS_MOUNT_LOCAL_FLOCK;
break;
case Opt_local_lock_posix:
- mnt->flags |= NFS_MOUNT_LOCAL_FCNTL;
+ ctx->flags |= NFS_MOUNT_LOCAL_FCNTL;
break;
case Opt_local_lock_none:
- mnt->flags &= ~(NFS_MOUNT_LOCAL_FLOCK |
+ ctx->flags &= ~(NFS_MOUNT_LOCAL_FLOCK |
NFS_MOUNT_LOCAL_FCNTL);
break;
default:
@@ -928,11 +927,11 @@ int nfs_parse_mount_options(char *raw, struct nfs_parsed_mount_data *mnt)
if (!sloppy && invalid_option)
return 0;
- if (mnt->minorversion && mnt->version != 4)
+ if (ctx->minorversion && ctx->version != 4)
goto out_minorversion_mismatch;
- if (mnt->options & NFS_OPTION_MIGRATION &&
- (mnt->version != 4 || mnt->minorversion != 0))
+ if (ctx->options & NFS_OPTION_MIGRATION &&
+ (ctx->version != 4 || ctx->minorversion != 0))
goto out_migration_misuse;
/*
@@ -940,15 +939,15 @@ int nfs_parse_mount_options(char *raw, struct nfs_parsed_mount_data *mnt)
* families in the addr=/mountaddr= options.
*/
if (protofamily != AF_UNSPEC &&
- protofamily != mnt->nfs_server.address.ss_family)
+ protofamily != ctx->nfs_server.address.ss_family)
goto out_proto_mismatch;
if (mountfamily != AF_UNSPEC) {
- if (mnt->mount_server.addrlen) {
- if (mountfamily != mnt->mount_server.address.ss_family)
+ if (ctx->mount_server.addrlen) {
+ if (mountfamily != ctx->mount_server.address.ss_family)
goto out_mountproto_mismatch;
} else {
- if (mountfamily != mnt->nfs_server.address.ss_family)
+ if (mountfamily != ctx->nfs_server.address.ss_family)
goto out_mountproto_mismatch;
}
}
@@ -970,7 +969,7 @@ int nfs_parse_mount_options(char *raw, struct nfs_parsed_mount_data *mnt)
return 0;
out_minorversion_mismatch:
printk(KERN_INFO "NFS: mount option vers=%u does not support "
- "minorversion=%u\n", mnt->version, mnt->minorversion);
+ "minorversion=%u\n", ctx->version, ctx->minorversion);
return 0;
out_migration_misuse:
printk(KERN_INFO
@@ -1078,18 +1077,18 @@ static int nfs_parse_devname(const char *dev_name,
* mountproto=tcp after mountproto=udp, and so on
*/
static int nfs23_validate_mount_data(void *options,
- struct nfs_parsed_mount_data *args,
+ struct nfs_fs_context *ctx,
struct nfs_fh *mntfh,
const char *dev_name)
{
struct nfs_mount_data *data = (struct nfs_mount_data *)options;
- struct sockaddr *sap = (struct sockaddr *)&args->nfs_server.address;
+ struct sockaddr *sap = (struct sockaddr *)&ctx->nfs_server.address;
int extra_flags = NFS_MOUNT_LEGACY_INTERFACE;
if (data == NULL)
goto out_no_data;
- args->version = NFS_DEFAULT_VERSION;
+ ctx->version = NFS_DEFAULT_VERSION;
switch (data->version) {
case 1:
data->namlen = 0; /* fall through */
@@ -1115,10 +1114,10 @@ static int nfs23_validate_mount_data(void *options,
if (data->root.size > NFS3_FHSIZE || data->root.size == 0)
goto out_invalid_fh;
mntfh->size = data->root.size;
- args->version = 3;
+ ctx->version = 3;
} else {
mntfh->size = NFS2_FHSIZE;
- args->version = 2;
+ ctx->version = 2;
}
@@ -1128,47 +1127,47 @@ static int nfs23_validate_mount_data(void *options,
sizeof(mntfh->data) - mntfh->size);
/*
- * Translate to nfs_parsed_mount_data, which nfs_fill_super
+ * Translate to nfs_fs_context, which nfs_fill_super
* can deal with.
*/
- args->flags = data->flags & NFS_MOUNT_FLAGMASK;
- args->flags |= extra_flags;
- args->rsize = data->rsize;
- args->wsize = data->wsize;
- args->timeo = data->timeo;
- args->retrans = data->retrans;
- args->acregmin = data->acregmin;
- args->acregmax = data->acregmax;
- args->acdirmin = data->acdirmin;
- args->acdirmax = data->acdirmax;
- args->need_mount = false;
+ ctx->flags = data->flags & NFS_MOUNT_FLAGMASK;
+ ctx->flags |= extra_flags;
+ ctx->rsize = data->rsize;
+ ctx->wsize = data->wsize;
+ ctx->timeo = data->timeo;
+ ctx->retrans = data->retrans;
+ ctx->acregmin = data->acregmin;
+ ctx->acregmax = data->acregmax;
+ ctx->acdirmin = data->acdirmin;
+ ctx->acdirmax = data->acdirmax;
+ ctx->need_mount = false;
memcpy(sap, &data->addr, sizeof(data->addr));
- args->nfs_server.addrlen = sizeof(data->addr);
- args->nfs_server.port = ntohs(data->addr.sin_port);
+ ctx->nfs_server.addrlen = sizeof(data->addr);
+ ctx->nfs_server.port = ntohs(data->addr.sin_port);
if (sap->sa_family != AF_INET ||
!nfs_verify_server_address(sap))
goto out_no_address;
if (!(data->flags & NFS_MOUNT_TCP))
- args->nfs_server.protocol = XPRT_TRANSPORT_UDP;
+ ctx->nfs_server.protocol = XPRT_TRANSPORT_UDP;
/* N.B. caller will free nfs_server.hostname in all cases */
- args->nfs_server.hostname = kstrdup(data->hostname, GFP_KERNEL);
- args->namlen = data->namlen;
- args->bsize = data->bsize;
+ ctx->nfs_server.hostname = kstrdup(data->hostname, GFP_KERNEL);
+ ctx->namlen = data->namlen;
+ ctx->bsize = data->bsize;
if (data->flags & NFS_MOUNT_SECFLAVOUR)
- args->selected_flavor = data->pseudoflavor;
+ ctx->selected_flavor = data->pseudoflavor;
else
- args->selected_flavor = RPC_AUTH_UNIX;
- if (!args->nfs_server.hostname)
+ ctx->selected_flavor = RPC_AUTH_UNIX;
+ if (!ctx->nfs_server.hostname)
goto out_nomem;
if (!(data->flags & NFS_MOUNT_NONLM))
- args->flags &= ~(NFS_MOUNT_LOCAL_FLOCK|
+ ctx->flags &= ~(NFS_MOUNT_LOCAL_FLOCK|
NFS_MOUNT_LOCAL_FCNTL);
else
- args->flags |= (NFS_MOUNT_LOCAL_FLOCK|
+ ctx->flags |= (NFS_MOUNT_LOCAL_FLOCK|
NFS_MOUNT_LOCAL_FCNTL);
/*
* The legacy version 6 binary mount data from userspace has a
@@ -1183,7 +1182,7 @@ static int nfs23_validate_mount_data(void *options,
int rc;
data->context[NFS_MAX_CONTEXT_LEN] = '\0';
rc = security_add_mnt_opt("context", data->context,
- strlen(data->context), &args->lsm_opts);
+ strlen(data->context), ctx->lsm_opts);
if (rc)
return rc;
#else
@@ -1225,10 +1224,9 @@ static int nfs23_validate_mount_data(void *options,
}
#if IS_ENABLED(CONFIG_NFS_V4)
-
-static void nfs4_validate_mount_flags(struct nfs_parsed_mount_data *args)
+static void nfs4_validate_mount_flags(struct nfs_fs_context *ctx)
{
- args->flags &= ~(NFS_MOUNT_NONLM|NFS_MOUNT_NOACL|NFS_MOUNT_VER3|
+ ctx->flags &= ~(NFS_MOUNT_NONLM|NFS_MOUNT_NOACL|NFS_MOUNT_VER3|
NFS_MOUNT_LOCAL_FLOCK|NFS_MOUNT_LOCAL_FCNTL);
}
@@ -1236,30 +1234,30 @@ static void nfs4_validate_mount_flags(struct nfs_parsed_mount_data *args)
* Validate NFSv4 mount options
*/
static int nfs4_validate_mount_data(void *options,
- struct nfs_parsed_mount_data *args,
+ struct nfs_fs_context *ctx,
const char *dev_name)
{
- struct sockaddr *sap = (struct sockaddr *)&args->nfs_server.address;
+ struct sockaddr *sap = (struct sockaddr *)&ctx->nfs_server.address;
struct nfs4_mount_data *data = (struct nfs4_mount_data *)options;
char *c;
if (data == NULL)
goto out_no_data;
- args->version = 4;
+ ctx->version = 4;
switch (data->version) {
case 1:
- if (data->host_addrlen > sizeof(args->nfs_server.address))
+ if (data->host_addrlen > sizeof(ctx->nfs_server.address))
goto out_no_address;
if (data->host_addrlen == 0)
goto out_no_address;
- args->nfs_server.addrlen = data->host_addrlen;
+ ctx->nfs_server.addrlen = data->host_addrlen;
if (copy_from_user(sap, data->host_addr, data->host_addrlen))
return -EFAULT;
if (!nfs_verify_server_address(sap))
goto out_no_address;
- args->nfs_server.port = ntohs(((struct sockaddr_in *)sap)->sin_port);
+ ctx->nfs_server.port = ntohs(((struct sockaddr_in *)sap)->sin_port);
if (data->auth_flavourlen) {
rpc_authflavor_t pseudoflavor;
@@ -1269,43 +1267,43 @@ static int nfs4_validate_mount_data(void *options,
data->auth_flavours,
sizeof(pseudoflavor)))
return -EFAULT;
- args->selected_flavor = pseudoflavor;
+ ctx->selected_flavor = pseudoflavor;
} else
- args->selected_flavor = RPC_AUTH_UNIX;
+ ctx->selected_flavor = RPC_AUTH_UNIX;
c = strndup_user(data->hostname.data, NFS4_MAXNAMLEN);
if (IS_ERR(c))
return PTR_ERR(c);
- args->nfs_server.hostname = c;
+ ctx->nfs_server.hostname = c;
c = strndup_user(data->mnt_path.data, NFS4_MAXPATHLEN);
if (IS_ERR(c))
return PTR_ERR(c);
- args->nfs_server.export_path = c;
+ ctx->nfs_server.export_path = c;
dfprintk(MOUNT, "NFS: MNTPATH: '%s'\n", c);
c = strndup_user(data->client_addr.data, 16);
if (IS_ERR(c))
return PTR_ERR(c);
- args->client_address = c;
+ ctx->client_address = c;
/*
- * Translate to nfs_parsed_mount_data, which nfs4_fill_super
+ * Translate to nfs_fs_context, which nfs4_fill_super
* can deal with.
*/
- args->flags = data->flags & NFS4_MOUNT_FLAGMASK;
- args->rsize = data->rsize;
- args->wsize = data->wsize;
- args->timeo = data->timeo;
- args->retrans = data->retrans;
- args->acregmin = data->acregmin;
- args->acregmax = data->acregmax;
- args->acdirmin = data->acdirmin;
- args->acdirmax = data->acdirmax;
- args->nfs_server.protocol = data->proto;
- nfs_validate_transport_protocol(args);
- if (args->nfs_server.protocol == XPRT_TRANSPORT_UDP)
+ ctx->flags = data->flags & NFS4_MOUNT_FLAGMASK;
+ ctx->rsize = data->rsize;
+ ctx->wsize = data->wsize;
+ ctx->timeo = data->timeo;
+ ctx->retrans = data->retrans;
+ ctx->acregmin = data->acregmin;
+ ctx->acregmax = data->acregmax;
+ ctx->acdirmin = data->acdirmin;
+ ctx->acdirmax = data->acdirmax;
+ ctx->nfs_server.protocol = data->proto;
+ nfs_validate_transport_protocol(ctx);
+ if (ctx->nfs_server.protocol == XPRT_TRANSPORT_UDP)
goto out_invalid_transport_udp;
break;
@@ -1335,67 +1333,67 @@ static int nfs4_validate_mount_data(void *options,
int nfs_validate_mount_data(struct file_system_type *fs_type,
void *options,
- struct nfs_parsed_mount_data *args,
+ struct nfs_fs_context *ctx,
struct nfs_fh *mntfh,
const char *dev_name)
{
if (fs_type == &nfs_fs_type)
- return nfs23_validate_mount_data(options, args, mntfh, dev_name);
- return nfs4_validate_mount_data(options, args, dev_name);
+ return nfs23_validate_mount_data(options, ctx, mntfh, dev_name);
+ return nfs4_validate_mount_data(options, ctx, dev_name);
}
#else
int nfs_validate_mount_data(struct file_system_type *fs_type,
void *options,
- struct nfs_parsed_mount_data *args,
+ struct nfs_fs_context *ctx,
struct nfs_fh *mntfh,
const char *dev_name)
{
- return nfs23_validate_mount_data(options, args, mntfh, dev_name);
+ return nfs23_validate_mount_data(options, ctx, mntfh, dev_name);
}
#endif
int nfs_validate_text_mount_data(void *options,
- struct nfs_parsed_mount_data *args,
+ struct nfs_fs_context *ctx,
const char *dev_name)
{
int port = 0;
int max_namelen = PAGE_SIZE;
int max_pathlen = NFS_MAXPATHLEN;
- struct sockaddr *sap = (struct sockaddr *)&args->nfs_server.address;
+ struct sockaddr *sap = (struct sockaddr *)&ctx->nfs_server.address;
- if (nfs_parse_mount_options((char *)options, args) == 0)
+ if (nfs_parse_mount_options((char *)options, ctx) == 0)
return -EINVAL;
if (!nfs_verify_server_address(sap))
goto out_no_address;
- if (args->version == 4) {
+ if (ctx->version == 4) {
#if IS_ENABLED(CONFIG_NFS_V4)
- if (args->nfs_server.protocol == XPRT_TRANSPORT_RDMA)
+ if (ctx->nfs_server.protocol == XPRT_TRANSPORT_RDMA)
port = NFS_RDMA_PORT;
else
port = NFS_PORT;
max_namelen = NFS4_MAXNAMLEN;
max_pathlen = NFS4_MAXPATHLEN;
- nfs_validate_transport_protocol(args);
- if (args->nfs_server.protocol == XPRT_TRANSPORT_UDP)
+ nfs_validate_transport_protocol(ctx);
+ if (ctx->nfs_server.protocol == XPRT_TRANSPORT_UDP)
goto out_invalid_transport_udp;
- nfs4_validate_mount_flags(args);
+ nfs4_validate_mount_flags(ctx);
#else
goto out_v4_not_compiled;
#endif /* CONFIG_NFS_V4 */
} else {
- nfs_set_mount_transport_protocol(args);
- if (args->nfs_server.protocol == XPRT_TRANSPORT_RDMA)
+ nfs_set_mount_transport_protocol(ctx);
+ if (ctx->nfs_server.protocol == XPRT_TRANSPORT_RDMA)
port = NFS_RDMA_PORT;
}
- nfs_set_port(sap, &args->nfs_server.port, port);
+ nfs_set_port(sap, &ctx->nfs_server.port, port);
return nfs_parse_devname(dev_name,
- &args->nfs_server.hostname,
+ &ctx->nfs_server.hostname,
max_namelen,
- &args->nfs_server.export_path,
+ &ctx->nfs_server.export_path,
max_pathlen);
#if !IS_ENABLED(CONFIG_NFS_V4)
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 0818736efc57..a553b11aebe9 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -81,7 +81,7 @@ struct nfs_client_initdata {
/*
* In-kernel mount arguments
*/
-struct nfs_parsed_mount_data {
+struct nfs_fs_context {
int flags;
unsigned int rsize, wsize;
unsigned int timeo, retrans;
@@ -138,7 +138,7 @@ struct nfs_mount_request {
struct nfs_mount_info {
unsigned int inherited_bsize;
- struct nfs_parsed_mount_data *parsed;
+ struct nfs_fs_context *ctx;
struct nfs_clone_mount *cloned;
struct nfs_server *server;
struct nfs_fh *mntfh;
@@ -229,16 +229,16 @@ struct nfs_pageio_descriptor;
/* mount.c */
#define NFS_TEXT_DATA 1
-extern struct nfs_parsed_mount_data *nfs_alloc_parsed_mount_data(void);
-extern void nfs_free_parsed_mount_data(struct nfs_parsed_mount_data *data);
-extern int nfs_parse_mount_options(char *raw, struct nfs_parsed_mount_data *mnt);
+extern struct nfs_fs_context *nfs_alloc_parsed_mount_data(void);
+extern void nfs_free_parsed_mount_data(struct nfs_fs_context *ctx);
+extern int nfs_parse_mount_options(char *raw, struct nfs_fs_context *ctx);
extern int nfs_validate_mount_data(struct file_system_type *fs_type,
void *options,
- struct nfs_parsed_mount_data *args,
+ struct nfs_fs_context *ctx,
struct nfs_fh *mntfh,
const char *dev_name);
extern int nfs_validate_text_mount_data(void *options,
- struct nfs_parsed_mount_data *args,
+ struct nfs_fs_context *ctx,
const char *dev_name);
/* pagelist.c */
diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c
index 16fba83b5c4b..2ee2281ce404 100644
--- a/fs/nfs/nfs4client.c
+++ b/fs/nfs/nfs4client.c
@@ -1053,61 +1053,61 @@ static int nfs4_server_common_setup(struct nfs_server *server,
* Create a version 4 volume record
*/
static int nfs4_init_server(struct nfs_server *server,
- struct nfs_parsed_mount_data *data)
+ struct nfs_fs_context *ctx)
{
struct rpc_timeout timeparms;
int error;
- nfs_init_timeout_values(&timeparms, data->nfs_server.protocol,
- data->timeo, data->retrans);
+ nfs_init_timeout_values(&timeparms, ctx->nfs_server.protocol,
+ ctx->timeo, ctx->retrans);
/* Initialise the client representation from the mount data */
- server->flags = data->flags;
- server->options = data->options;
- server->auth_info = data->auth_info;
+ server->flags = ctx->flags;
+ server->options = ctx->options;
+ server->auth_info = ctx->auth_info;
/* Use the first specified auth flavor. If this flavor isn't
* allowed by the server, use the SECINFO path to try the
* other specified flavors */
- if (data->auth_info.flavor_len >= 1)
- data->selected_flavor = data->auth_info.flavors[0];
+ if (ctx->auth_info.flavor_len >= 1)
+ ctx->selected_flavor = ctx->auth_info.flavors[0];
else
- data->selected_flavor = RPC_AUTH_UNIX;
+ ctx->selected_flavor = RPC_AUTH_UNIX;
/* Get a client record */
error = nfs4_set_client(server,
- data->nfs_server.hostname,
- (const struct sockaddr *)&data->nfs_server.address,
- data->nfs_server.addrlen,
- data->client_address,
- data->nfs_server.protocol,
+ ctx->nfs_server.hostname,
+ (const struct sockaddr *)&ctx->nfs_server.address,
+ ctx->nfs_server.addrlen,
+ ctx->client_address,
+ ctx->nfs_server.protocol,
&timeparms,
- data->minorversion,
- data->nfs_server.nconnect,
- data->net);
+ ctx->minorversion,
+ ctx->nfs_server.nconnect,
+ ctx->net);
if (error < 0)
return error;
- if (data->rsize)
- server->rsize = nfs_block_size(data->rsize, NULL);
- if (data->wsize)
- server->wsize = nfs_block_size(data->wsize, NULL);
+ if (ctx->rsize)
+ server->rsize = nfs_block_size(ctx->rsize, NULL);
+ if (ctx->wsize)
+ server->wsize = nfs_block_size(ctx->wsize, NULL);
- server->acregmin = data->acregmin * HZ;
- server->acregmax = data->acregmax * HZ;
- server->acdirmin = data->acdirmin * HZ;
- server->acdirmax = data->acdirmax * HZ;
- server->port = data->nfs_server.port;
+ server->acregmin = ctx->acregmin * HZ;
+ server->acregmax = ctx->acregmax * HZ;
+ server->acdirmin = ctx->acdirmin * HZ;
+ server->acdirmax = ctx->acdirmax * HZ;
+ server->port = ctx->nfs_server.port;
return nfs_init_server_rpcclient(server, &timeparms,
- data->selected_flavor);
+ ctx->selected_flavor);
}
/*
* Create a version 4 volume record
* - keyed on server and FSID
*/
-/*struct nfs_server *nfs4_create_server(const struct nfs_parsed_mount_data *data,
+/*struct nfs_server *nfs4_create_server(const struct nfs_fs_context *data,
struct nfs_fh *mntfh)*/
struct nfs_server *nfs4_create_server(struct nfs_mount_info *mount_info)
{
@@ -1121,10 +1121,10 @@ struct nfs_server *nfs4_create_server(struct nfs_mount_info *mount_info)
server->cred = get_cred(current_cred());
- auth_probe = mount_info->parsed->auth_info.flavor_len < 1;
+ auth_probe = mount_info->ctx->auth_info.flavor_len < 1;
/* set up the general RPC client */
- error = nfs4_init_server(server, mount_info->parsed);
+ error = nfs4_init_server(server, mount_info->ctx);
if (error < 0)
goto error;
diff --git a/fs/nfs/nfs4super.c b/fs/nfs/nfs4super.c
index 38f2eec7e1ad..ca9740137cfe 100644
--- a/fs/nfs/nfs4super.c
+++ b/fs/nfs/nfs4super.c
@@ -198,15 +198,15 @@ static struct dentry *do_nfs4_mount(struct nfs_server *server, int flags,
struct dentry *nfs4_try_mount(int flags, const char *dev_name,
struct nfs_mount_info *mount_info)
{
- struct nfs_parsed_mount_data *data = mount_info->parsed;
+ struct nfs_fs_context *ctx = mount_info->ctx;
struct dentry *res;
dfprintk(MOUNT, "--> nfs4_try_mount()\n");
res = do_nfs4_mount(nfs4_create_server(mount_info),
flags, mount_info,
- data->nfs_server.hostname,
- data->nfs_server.export_path);
+ ctx->nfs_server.hostname,
+ ctx->nfs_server.export_path);
dfprintk(MOUNT, "<-- nfs4_try_mount() = %d%s\n",
PTR_ERR_OR_ZERO(res),
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index bfea31cf1c12..3ec46d804bf2 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -726,12 +726,13 @@ bool nfs_auth_info_match(const struct nfs_auth_info *auth_info,
EXPORT_SYMBOL_GPL(nfs_auth_info_match);
/*
- * Ensure that a specified authtype in args->auth_info is supported by
- * the server. Returns 0 and sets args->selected_flavor if it's ok, and
+ * Ensure that a specified authtype in cfg->auth_info is supported by
+ * the server. Returns 0 and sets cfg->selected_flavor if it's ok, and
* -EACCES if not.
*/
-static int nfs_verify_authflavors(struct nfs_parsed_mount_data *args,
- rpc_authflavor_t *server_authlist, unsigned int count)
+static int nfs_verify_authflavors(struct nfs_fs_context *cfg,
+ rpc_authflavor_t *server_authlist,
+ unsigned int count)
{
rpc_authflavor_t flavor = RPC_AUTH_MAXFLAVOR;
bool found_auth_null = false;
@@ -752,7 +753,7 @@ static int nfs_verify_authflavors(struct nfs_parsed_mount_data *args,
for (i = 0; i < count; i++) {
flavor = server_authlist[i];
- if (nfs_auth_info_match(&args->auth_info, flavor))
+ if (nfs_auth_info_match(&cfg->auth_info, flavor))
goto out;
if (flavor == RPC_AUTH_NULL)
@@ -760,7 +761,7 @@ static int nfs_verify_authflavors(struct nfs_parsed_mount_data *args,
}
if (found_auth_null) {
- flavor = args->auth_info.flavors[0];
+ flavor = cfg->auth_info.flavors[0];
goto out;
}
@@ -769,8 +770,8 @@ static int nfs_verify_authflavors(struct nfs_parsed_mount_data *args,
return -EACCES;
out:
- args->selected_flavor = flavor;
- dfprintk(MOUNT, "NFS: using auth flavor %u\n", args->selected_flavor);
+ cfg->selected_flavor = flavor;
+ dfprintk(MOUNT, "NFS: using auth flavor %u\n", cfg->selected_flavor);
return 0;
}
@@ -778,50 +779,50 @@ static int nfs_verify_authflavors(struct nfs_parsed_mount_data *args,
* Use the remote server's MOUNT service to request the NFS file handle
* corresponding to the provided path.
*/
-static int nfs_request_mount(struct nfs_parsed_mount_data *args,
+static int nfs_request_mount(struct nfs_fs_context *cfg,
struct nfs_fh *root_fh,
rpc_authflavor_t *server_authlist,
unsigned int *server_authlist_len)
{
struct nfs_mount_request request = {
.sap = (struct sockaddr *)
- &args->mount_server.address,
- .dirpath = args->nfs_server.export_path,
- .protocol = args->mount_server.protocol,
+ &cfg->mount_server.address,
+ .dirpath = cfg->nfs_server.export_path,
+ .protocol = cfg->mount_server.protocol,
.fh = root_fh,
- .noresvport = args->flags & NFS_MOUNT_NORESVPORT,
+ .noresvport = cfg->flags & NFS_MOUNT_NORESVPORT,
.auth_flav_len = server_authlist_len,
.auth_flavs = server_authlist,
- .net = args->net,
+ .net = cfg->net,
};
int status;
- if (args->mount_server.version == 0) {
- switch (args->version) {
+ if (cfg->mount_server.version == 0) {
+ switch (cfg->version) {
default:
- args->mount_server.version = NFS_MNT3_VERSION;
+ cfg->mount_server.version = NFS_MNT3_VERSION;
break;
case 2:
- args->mount_server.version = NFS_MNT_VERSION;
+ cfg->mount_server.version = NFS_MNT_VERSION;
}
}
- request.version = args->mount_server.version;
+ request.version = cfg->mount_server.version;
- if (args->mount_server.hostname)
- request.hostname = args->mount_server.hostname;
+ if (cfg->mount_server.hostname)
+ request.hostname = cfg->mount_server.hostname;
else
- request.hostname = args->nfs_server.hostname;
+ request.hostname = cfg->nfs_server.hostname;
/*
* Construct the mount server's address.
*/
- if (args->mount_server.address.ss_family == AF_UNSPEC) {
- memcpy(request.sap, &args->nfs_server.address,
- args->nfs_server.addrlen);
- args->mount_server.addrlen = args->nfs_server.addrlen;
+ if (cfg->mount_server.address.ss_family == AF_UNSPEC) {
+ memcpy(request.sap, &cfg->nfs_server.address,
+ cfg->nfs_server.addrlen);
+ cfg->mount_server.addrlen = cfg->nfs_server.addrlen;
}
- request.salen = args->mount_server.addrlen;
- nfs_set_port(request.sap, &args->mount_server.port, 0);
+ request.salen = cfg->mount_server.addrlen;
+ nfs_set_port(request.sap, &cfg->mount_server.port, 0);
/*
* Now ask the mount server to map our export path
@@ -844,12 +845,12 @@ static struct nfs_server *nfs_try_mount_request(struct nfs_mount_info *mount_inf
bool tried_auth_unix = false;
bool auth_null_in_list = false;
struct nfs_server *server = ERR_PTR(-EACCES);
- struct nfs_parsed_mount_data *args = mount_info->parsed;
+ struct nfs_fs_context *ctx = mount_info->ctx;
rpc_authflavor_t authlist[NFS_MAX_SECFLAVORS];
unsigned int authlist_len = ARRAY_SIZE(authlist);
struct nfs_subversion *nfs_mod = mount_info->nfs_mod;
- status = nfs_request_mount(args, mount_info->mntfh, authlist,
+ status = nfs_request_mount(ctx, mount_info->mntfh, authlist,
&authlist_len);
if (status)
return ERR_PTR(status);
@@ -858,10 +859,10 @@ static struct nfs_server *nfs_try_mount_request(struct nfs_mount_info *mount_inf
* Was a sec= authflavor specified in the options? First, verify
* whether the server supports it, and then just try to use it if so.
*/
- if (args->auth_info.flavor_len > 0) {
- status = nfs_verify_authflavors(args, authlist, authlist_len);
+ if (ctx->auth_info.flavor_len > 0) {
+ status = nfs_verify_authflavors(ctx, authlist, authlist_len);
dfprintk(MOUNT, "NFS: using auth flavor %u\n",
- args->selected_flavor);
+ ctx->selected_flavor);
if (status)
return ERR_PTR(status);
return nfs_mod->rpc_ops->create_server(mount_info);
@@ -890,7 +891,7 @@ static struct nfs_server *nfs_try_mount_request(struct nfs_mount_info *mount_inf
/* Fallthrough */
}
dfprintk(MOUNT, "NFS: attempting to use auth flavor %u\n", flavor);
- args->selected_flavor = flavor;
+ ctx->selected_flavor = flavor;
server = nfs_mod->rpc_ops->create_server(mount_info);
if (!IS_ERR(server))
return server;
@@ -906,7 +907,7 @@ static struct nfs_server *nfs_try_mount_request(struct nfs_mount_info *mount_inf
/* Last chance! Try AUTH_UNIX */
dfprintk(MOUNT, "NFS: attempting to use auth flavor %u\n", RPC_AUTH_UNIX);
- args->selected_flavor = RPC_AUTH_UNIX;
+ ctx->selected_flavor = RPC_AUTH_UNIX;
return nfs_mod->rpc_ops->create_server(mount_info);
}
@@ -916,7 +917,7 @@ struct dentry *nfs_try_mount(int flags, const char *dev_name,
struct nfs_mount_info *mount_info)
{
struct nfs_subversion *nfs_mod = mount_info->nfs_mod;
- if (mount_info->parsed->need_mount)
+ if (mount_info->ctx->need_mount)
mount_info->server = nfs_try_mount_request(mount_info);
else
mount_info->server = nfs_mod->rpc_ops->create_server(mount_info);
@@ -940,24 +941,24 @@ EXPORT_SYMBOL_GPL(nfs_try_mount);
static int
nfs_compare_remount_data(struct nfs_server *nfss,
- struct nfs_parsed_mount_data *data)
+ struct nfs_fs_context *ctx)
{
- if ((data->flags ^ nfss->flags) & NFS_REMOUNT_CMP_FLAGMASK ||
- data->rsize != nfss->rsize ||
- data->wsize != nfss->wsize ||
- data->version != nfss->nfs_client->rpc_ops->version ||
- data->minorversion != nfss->nfs_client->cl_minorversion ||
- data->retrans != nfss->client->cl_timeout->to_retries ||
- !nfs_auth_info_match(&data->auth_info, nfss->client->cl_auth->au_flavor) ||
- data->acregmin != nfss->acregmin / HZ ||
- data->acregmax != nfss->acregmax / HZ ||
- data->acdirmin != nfss->acdirmin / HZ ||
- data->acdirmax != nfss->acdirmax / HZ ||
- data->timeo != (10U * nfss->client->cl_timeout->to_initval / HZ) ||
- (data->options & NFS_OPTION_FSCACHE) != (nfss->options & NFS_OPTION_FSCACHE) ||
- data->nfs_server.port != nfss->port ||
- data->nfs_server.addrlen != nfss->nfs_client->cl_addrlen ||
- !rpc_cmp_addr((struct sockaddr *)&data->nfs_server.address,
+ if ((ctx->flags ^ nfss->flags) & NFS_REMOUNT_CMP_FLAGMASK ||
+ ctx->rsize != nfss->rsize ||
+ ctx->wsize != nfss->wsize ||
+ ctx->version != nfss->nfs_client->rpc_ops->version ||
+ ctx->minorversion != nfss->nfs_client->cl_minorversion ||
+ ctx->retrans != nfss->client->cl_timeout->to_retries ||
+ !nfs_auth_info_match(&ctx->auth_info, nfss->client->cl_auth->au_flavor) ||
+ ctx->acregmin != nfss->acregmin / HZ ||
+ ctx->acregmax != nfss->acregmax / HZ ||
+ ctx->acdirmin != nfss->acdirmin / HZ ||
+ ctx->acdirmax != nfss->acdirmax / HZ ||
+ ctx->timeo != (10U * nfss->client->cl_timeout->to_initval / HZ) ||
+ (ctx->options & NFS_OPTION_FSCACHE) != (nfss->options & NFS_OPTION_FSCACHE) ||
+ ctx->nfs_server.port != nfss->port ||
+ ctx->nfs_server.addrlen != nfss->nfs_client->cl_addrlen ||
+ !rpc_cmp_addr((struct sockaddr *)&ctx->nfs_server.address,
(struct sockaddr *)&nfss->nfs_client->cl_addr))
return -EINVAL;
@@ -969,7 +970,7 @@ nfs_remount(struct super_block *sb, int *flags, char *raw_data)
{
int error;
struct nfs_server *nfss = sb->s_fs_info;
- struct nfs_parsed_mount_data *data;
+ struct nfs_fs_context *ctx;
struct nfs_mount_data *options = (struct nfs_mount_data *)raw_data;
struct nfs4_mount_data *options4 = (struct nfs4_mount_data *)raw_data;
u32 nfsvers = nfss->nfs_client->rpc_ops->version;
@@ -987,32 +988,32 @@ nfs_remount(struct super_block *sb, int *flags, char *raw_data)
options->version <= 6))))
return 0;
- data = nfs_alloc_parsed_mount_data();
- if (data == NULL)
+ ctx = nfs_alloc_parsed_mount_data();
+ if (ctx == NULL)
return -ENOMEM;
/* fill out struct with values from existing mount */
- data->flags = nfss->flags;
- data->rsize = nfss->rsize;
- data->wsize = nfss->wsize;
- data->retrans = nfss->client->cl_timeout->to_retries;
- data->selected_flavor = nfss->client->cl_auth->au_flavor;
- data->acregmin = nfss->acregmin / HZ;
- data->acregmax = nfss->acregmax / HZ;
- data->acdirmin = nfss->acdirmin / HZ;
- data->acdirmax = nfss->acdirmax / HZ;
- data->timeo = 10U * nfss->client->cl_timeout->to_initval / HZ;
- data->nfs_server.port = nfss->port;
- data->nfs_server.addrlen = nfss->nfs_client->cl_addrlen;
- data->version = nfsvers;
- data->minorversion = nfss->nfs_client->cl_minorversion;
- data->net = current->nsproxy->net_ns;
- memcpy(&data->nfs_server.address, &nfss->nfs_client->cl_addr,
- data->nfs_server.addrlen);
+ ctx->flags = nfss->flags;
+ ctx->rsize = nfss->rsize;
+ ctx->wsize = nfss->wsize;
+ ctx->retrans = nfss->client->cl_timeout->to_retries;
+ ctx->selected_flavor = nfss->client->cl_auth->au_flavor;
+ ctx->acregmin = nfss->acregmin / HZ;
+ ctx->acregmax = nfss->acregmax / HZ;
+ ctx->acdirmin = nfss->acdirmin / HZ;
+ ctx->acdirmax = nfss->acdirmax / HZ;
+ ctx->timeo = 10U * nfss->client->cl_timeout->to_initval / HZ;
+ ctx->nfs_server.port = nfss->port;
+ ctx->nfs_server.addrlen = nfss->nfs_client->cl_addrlen;
+ ctx->version = nfsvers;
+ ctx->minorversion = nfss->nfs_client->cl_minorversion;
+ ctx->net = current->nsproxy->net_ns;
+ memcpy(&ctx->nfs_server.address, &nfss->nfs_client->cl_addr,
+ ctx->nfs_server.addrlen);
/* overwrite those values with any that were specified */
error = -EINVAL;
- if (!nfs_parse_mount_options((char *)options, data))
+ if (!nfs_parse_mount_options((char *)options, ctx))
goto out;
/*
@@ -1021,15 +1022,15 @@ nfs_remount(struct super_block *sb, int *flags, char *raw_data)
* will clear SB_SYNCHRONOUS if -o sync wasn't specified in the
* remount options, so we have to explicitly reset it.
*/
- if (data->flags & NFS_MOUNT_NOAC)
+ if (ctx->flags & NFS_MOUNT_NOAC)
*flags |= SB_SYNCHRONOUS;
/* compare new mount options with old ones */
- error = nfs_compare_remount_data(nfss, data);
+ error = nfs_compare_remount_data(nfss, ctx);
if (!error)
- error = security_sb_remount(sb, data->lsm_opts);
+ error = security_sb_remount(sb, ctx->lsm_opts);
out:
- nfs_free_parsed_mount_data(data);
+ nfs_free_parsed_mount_data(ctx);
return error;
}
EXPORT_SYMBOL_GPL(nfs_remount);
@@ -1039,15 +1040,15 @@ EXPORT_SYMBOL_GPL(nfs_remount);
*/
static void nfs_fill_super(struct super_block *sb, struct nfs_mount_info *mount_info)
{
- struct nfs_parsed_mount_data *data = mount_info->parsed;
+ struct nfs_fs_context *ctx = mount_info->ctx;
struct nfs_server *server = NFS_SB(sb);
sb->s_blocksize_bits = 0;
sb->s_blocksize = 0;
sb->s_xattr = server->nfs_client->cl_nfs_mod->xattr;
sb->s_op = server->nfs_client->cl_nfs_mod->sops;
- if (data && data->bsize)
- sb->s_blocksize = nfs_block_size(data->bsize, &sb->s_blocksize_bits);
+ if (ctx && ctx->bsize)
+ sb->s_blocksize = nfs_block_size(ctx->bsize, &sb->s_blocksize_bits);
if (server->nfs_client->rpc_ops->version != 2) {
/* The VFS shouldn't apply the umask to mode bits. We will do
@@ -1208,7 +1209,7 @@ static int nfs_compare_super(struct super_block *sb, void *data)
#ifdef CONFIG_NFS_FSCACHE
static void nfs_get_cache_cookie(struct super_block *sb,
- struct nfs_parsed_mount_data *parsed,
+ struct nfs_fs_context *ctx,
struct nfs_clone_mount *cloned)
{
struct nfs_server *nfss = NFS_SB(sb);
@@ -1218,12 +1219,12 @@ static void nfs_get_cache_cookie(struct super_block *sb,
nfss->fscache_key = NULL;
nfss->fscache = NULL;
- if (parsed) {
- if (!(parsed->options & NFS_OPTION_FSCACHE))
+ if (ctx) {
+ if (!(ctx->options & NFS_OPTION_FSCACHE))
return;
- if (parsed->fscache_uniq) {
- uniq = parsed->fscache_uniq;
- ulen = strlen(parsed->fscache_uniq);
+ if (ctx->fscache_uniq) {
+ uniq = ctx->fscache_uniq;
+ ulen = strlen(ctx->fscache_uniq);
}
} else if (cloned) {
struct nfs_server *mnt_s = NFS_SB(cloned->sb);
@@ -1240,7 +1241,7 @@ static void nfs_get_cache_cookie(struct super_block *sb,
}
#else
static void nfs_get_cache_cookie(struct super_block *sb,
- struct nfs_parsed_mount_data *parsed,
+ struct nfs_fs_context *parsed,
struct nfs_clone_mount *cloned)
{
}
@@ -1312,7 +1313,7 @@ static struct dentry *nfs_fs_mount_common(int flags, const char *dev_name,
s->s_blocksize_bits = bsize;
s->s_blocksize = 1U << bsize;
}
- nfs_get_cache_cookie(s, mount_info->parsed, mount_info->cloned);
+ nfs_get_cache_cookie(s, mount_info->ctx, mount_info->cloned);
if (!(server->flags & NFS_MOUNT_UNSHARED))
s->s_iflags |= SB_I_MULTIROOT;
}
@@ -1333,7 +1334,7 @@ static struct dentry *nfs_fs_mount_common(int flags, const char *dev_name,
error = security_sb_clone_mnt_opts(mount_info->cloned->sb, s, kflags,
&kflags_out);
} else {
- error = security_sb_set_mnt_opts(s, mount_info->parsed->lsm_opts,
+ error = security_sb_set_mnt_opts(s, mount_info->ctx->lsm_opts,
kflags, &kflags_out);
}
if (error)
@@ -1370,21 +1371,22 @@ struct dentry *nfs_fs_mount(struct file_system_type *fs_type,
struct nfs_subversion *nfs_mod;
int error;
- mount_info.parsed = nfs_alloc_parsed_mount_data();
+ mount_info.ctx = nfs_alloc_parsed_mount_data();
mount_info.mntfh = nfs_alloc_fhandle();
- if (mount_info.parsed == NULL || mount_info.mntfh == NULL)
+ if (mount_info.ctx == NULL || mount_info.mntfh == NULL)
goto out;
/* Validate the mount data */
- error = nfs_validate_mount_data(fs_type, raw_data, mount_info.parsed, mount_info.mntfh, dev_name);
+ error = nfs_validate_mount_data(fs_type, raw_data, mount_info.ctx, mount_info.mntfh, dev_name);
if (error == NFS_TEXT_DATA)
- error = nfs_validate_text_mount_data(raw_data, mount_info.parsed, dev_name);
+ error = nfs_validate_text_mount_data(raw_data,
+ mount_info.ctx, dev_name);
if (error < 0) {
mntroot = ERR_PTR(error);
goto out;
}
- nfs_mod = get_nfs_version(mount_info.parsed->version);
+ nfs_mod = get_nfs_version(mount_info.ctx->version);
if (IS_ERR(nfs_mod)) {
mntroot = ERR_CAST(nfs_mod);
goto out;
@@ -1395,7 +1397,7 @@ struct dentry *nfs_fs_mount(struct file_system_type *fs_type,
put_nfs_version(nfs_mod);
out:
- nfs_free_parsed_mount_data(mount_info.parsed);
+ nfs_free_parsed_mount_data(mount_info.ctx);
nfs_free_fhandle(mount_info.mntfh);
return mntroot;
}
--
2.17.2
From: Al Viro <[email protected]>
it's always either nfs_set_sb_security() or nfs_clone_sb_security(),
the choice being controlled by mount_info->cloned != NULL. No need
to add methods, especially when both instances live right next to
the caller and are never accessed anywhere else.
Reviewed-by: David Howells <[email protected]>
Signed-off-by: Al Viro <[email protected]>
---
fs/nfs/internal.h | 3 --
fs/nfs/namespace.c | 1 -
fs/nfs/nfs4super.c | 3 --
fs/nfs/super.c | 69 ++++++++++++++--------------------------------
4 files changed, 21 insertions(+), 55 deletions(-)
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index f64337a6d229..c0c6cd24f73f 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -137,7 +137,6 @@ struct nfs_mount_request {
struct nfs_mount_info {
unsigned int inherited_bsize;
- int (*set_security)(struct super_block *, struct dentry *, struct nfs_mount_info *);
struct nfs_parsed_mount_data *parsed;
struct nfs_clone_mount *cloned;
struct nfs_server *server;
@@ -391,8 +390,6 @@ extern struct file_system_type nfs4_referral_fs_type;
#endif
bool nfs_auth_info_match(const struct nfs_auth_info *, rpc_authflavor_t);
struct dentry *nfs_try_mount(int, const char *, struct nfs_mount_info *);
-int nfs_set_sb_security(struct super_block *, struct dentry *, struct nfs_mount_info *);
-int nfs_clone_sb_security(struct super_block *, struct dentry *, struct nfs_mount_info *);
struct dentry *nfs_fs_mount(struct file_system_type *, int, const char *, void *);
void nfs_kill_super(struct super_block *);
diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c
index 7bc5b9b8f5ea..72a99f9c7390 100644
--- a/fs/nfs/namespace.c
+++ b/fs/nfs/namespace.c
@@ -230,7 +230,6 @@ struct vfsmount *nfs_do_submount(struct dentry *dentry, struct nfs_fh *fh,
};
struct nfs_mount_info mount_info = {
.inherited_bsize = sb->s_blocksize_bits,
- .set_security = nfs_clone_sb_security,
.cloned = &mountdata,
.mntfh = fh,
.nfs_mod = NFS_SB(sb)->nfs_client->cl_nfs_mod,
diff --git a/fs/nfs/nfs4super.c b/fs/nfs/nfs4super.c
index d387c3c3b600..38f2eec7e1ad 100644
--- a/fs/nfs/nfs4super.c
+++ b/fs/nfs/nfs4super.c
@@ -201,8 +201,6 @@ struct dentry *nfs4_try_mount(int flags, const char *dev_name,
struct nfs_parsed_mount_data *data = mount_info->parsed;
struct dentry *res;
- mount_info->set_security = nfs_set_sb_security;
-
dfprintk(MOUNT, "--> nfs4_try_mount()\n");
res = do_nfs4_mount(nfs4_create_server(mount_info),
@@ -224,7 +222,6 @@ static struct dentry *nfs4_referral_mount(struct file_system_type *fs_type,
{
struct nfs_clone_mount *data = raw_data;
struct nfs_mount_info mount_info = {
- .set_security = nfs_clone_sb_security,
.cloned = data,
.nfs_mod = &nfs_v4,
};
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index c5fefd9bf6ae..f1b5488a04c3 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -2550,52 +2550,6 @@ static void nfs_get_cache_cookie(struct super_block *sb,
}
#endif
-int nfs_set_sb_security(struct super_block *s, struct dentry *mntroot,
- struct nfs_mount_info *mount_info)
-{
- int error;
- unsigned long kflags = 0, kflags_out = 0;
- if (NFS_SB(s)->caps & NFS_CAP_SECURITY_LABEL)
- kflags |= SECURITY_LSM_NATIVE_LABELS;
-
- error = security_sb_set_mnt_opts(s, mount_info->parsed->lsm_opts,
- kflags, &kflags_out);
- if (error)
- goto err;
-
- if (NFS_SB(s)->caps & NFS_CAP_SECURITY_LABEL &&
- !(kflags_out & SECURITY_LSM_NATIVE_LABELS))
- NFS_SB(s)->caps &= ~NFS_CAP_SECURITY_LABEL;
-err:
- return error;
-}
-EXPORT_SYMBOL_GPL(nfs_set_sb_security);
-
-int nfs_clone_sb_security(struct super_block *s, struct dentry *mntroot,
- struct nfs_mount_info *mount_info)
-{
- int error;
- unsigned long kflags = 0, kflags_out = 0;
-
- /* clone any lsm security options from the parent to the new sb */
- if (d_inode(mntroot)->i_fop != &nfs_dir_operations)
- return -ESTALE;
-
- if (NFS_SB(s)->caps & NFS_CAP_SECURITY_LABEL)
- kflags |= SECURITY_LSM_NATIVE_LABELS;
-
- error = security_sb_clone_mnt_opts(mount_info->cloned->sb, s, kflags,
- &kflags_out);
- if (error)
- return error;
-
- if (NFS_SB(s)->caps & NFS_CAP_SECURITY_LABEL &&
- !(kflags_out & SECURITY_LSM_NATIVE_LABELS))
- NFS_SB(s)->caps &= ~NFS_CAP_SECURITY_LABEL;
- return 0;
-}
-EXPORT_SYMBOL_GPL(nfs_clone_sb_security);
-
static void nfs_set_readahead(struct backing_dev_info *bdi,
unsigned long iomax_pages)
{
@@ -2610,6 +2564,7 @@ static struct dentry *nfs_fs_mount_common(int flags, const char *dev_name,
struct dentry *mntroot = ERR_PTR(-ENOMEM);
int (*compare_super)(struct super_block *, void *) = nfs_compare_super;
struct nfs_server *server = mount_info->server;
+ unsigned long kflags = 0, kflags_out = 0;
struct nfs_sb_mountdata sb_mntdata = {
.mntflags = flags,
.server = server,
@@ -2670,7 +2625,26 @@ static struct dentry *nfs_fs_mount_common(int flags, const char *dev_name,
if (IS_ERR(mntroot))
goto error_splat_super;
- error = mount_info->set_security(s, mntroot, mount_info);
+
+ if (NFS_SB(s)->caps & NFS_CAP_SECURITY_LABEL)
+ kflags |= SECURITY_LSM_NATIVE_LABELS;
+ if (mount_info->cloned) {
+ if (d_inode(mntroot)->i_fop != &nfs_dir_operations) {
+ error = -ESTALE;
+ goto error_splat_root;
+ }
+ /* clone any lsm security options from the parent to the new sb */
+ error = security_sb_clone_mnt_opts(mount_info->cloned->sb, s, kflags,
+ &kflags_out);
+ } else {
+ error = security_sb_set_mnt_opts(s, mount_info->parsed->lsm_opts,
+ kflags, &kflags_out);
+ }
+ if (error)
+ goto error_splat_root;
+ if (NFS_SB(s)->caps & NFS_CAP_SECURITY_LABEL &&
+ !(kflags_out & SECURITY_LSM_NATIVE_LABELS))
+ NFS_SB(s)->caps &= ~NFS_CAP_SECURITY_LABEL;
if (error)
goto error_splat_root;
@@ -2695,7 +2669,6 @@ struct dentry *nfs_fs_mount(struct file_system_type *fs_type,
int flags, const char *dev_name, void *raw_data)
{
struct nfs_mount_info mount_info = {
- .set_security = nfs_set_sb_security,
};
struct dentry *mntroot = ERR_PTR(-ENOMEM);
struct nfs_subversion *nfs_mod;
--
2.17.2
From: Al Viro <[email protected]>
Do that (fhandle allocation, setting struct server up) in
nfs4_referral_mount() and nfs4_try_mount() resp. and pass the
server and pointer to mount_info into nfs_do_root_mount() so that
nfs4_remote_referral_mount()/nfs_remote_mount() could be merged.
Since we are moving stuff from ->mount() instances to the points
prior to vfs_kern_mount() that would trigger those, we need to
make sure that do_nfs_root_mount() will do the corresponding
cleanup itself if it doesn't trigger those ->mount() instances.
Reviewed-by: David Howells <[email protected]>
Signed-off-by: Al Viro <[email protected]>
---
fs/nfs/nfs4super.c | 67 ++++++++++++++++++++++++----------------------
1 file changed, 35 insertions(+), 32 deletions(-)
diff --git a/fs/nfs/nfs4super.c b/fs/nfs/nfs4super.c
index 4591d6618efa..773c347df3ab 100644
--- a/fs/nfs/nfs4super.c
+++ b/fs/nfs/nfs4super.c
@@ -108,32 +108,37 @@ static struct dentry *
nfs4_remote_mount(struct file_system_type *fs_type, int flags,
const char *dev_name, void *info)
{
- struct nfs_mount_info *mount_info = info;
-
- mount_info->set_security = nfs_set_sb_security;
-
- /* Get a volume representation */
- mount_info->server = nfs4_create_server(mount_info, &nfs_v4);
- return nfs_fs_mount_common(flags, dev_name, mount_info, &nfs_v4);
+ return nfs_fs_mount_common(flags, dev_name, info, &nfs_v4);
}
static struct vfsmount *nfs_do_root_mount(struct file_system_type *fs_type,
- int flags, void *data, const char *hostname)
+ struct nfs_server *server, int flags,
+ struct nfs_mount_info *info,
+ const char *hostname)
{
struct vfsmount *root_mnt;
char *root_devname;
size_t len;
+ if (IS_ERR(server))
+ return ERR_CAST(server);
+
len = strlen(hostname) + 5;
root_devname = kmalloc(len, GFP_KERNEL);
- if (root_devname == NULL)
+ if (root_devname == NULL) {
+ nfs_free_server(server);
return ERR_PTR(-ENOMEM);
+ }
/* Does hostname needs to be enclosed in brackets? */
if (strchr(hostname, ':'))
snprintf(root_devname, len, "[%s]:/", hostname);
else
snprintf(root_devname, len, "%s:/", hostname);
- root_mnt = vfs_kern_mount(fs_type, flags, root_devname, data);
+ info->server = server;
+ root_mnt = vfs_kern_mount(fs_type, flags, root_devname, info);
+ if (info->server)
+ nfs_free_server(info->server);
+ info->server = NULL;
kfree(root_devname);
return root_mnt;
}
@@ -234,11 +239,15 @@ struct dentry *nfs4_try_mount(int flags, const char *dev_name,
struct dentry *res;
struct nfs_parsed_mount_data *data = mount_info->parsed;
+ mount_info->set_security = nfs_set_sb_security;
+
dfprintk(MOUNT, "--> nfs4_try_mount()\n");
export_path = data->nfs_server.export_path;
data->nfs_server.export_path = "/";
- root_mnt = nfs_do_root_mount(&nfs4_remote_fs_type, flags, mount_info,
+ root_mnt = nfs_do_root_mount(&nfs4_remote_fs_type,
+ nfs4_create_server(mount_info, &nfs_v4),
+ flags, mount_info,
data->nfs_server.hostname);
data->nfs_server.export_path = export_path;
@@ -254,25 +263,7 @@ static struct dentry *
nfs4_remote_referral_mount(struct file_system_type *fs_type, int flags,
const char *dev_name, void *raw_data)
{
- struct nfs_mount_info mount_info = {
- .fill_super = nfs_fill_super,
- .set_security = nfs_clone_sb_security,
- .cloned = raw_data,
- };
- struct dentry *mntroot = ERR_PTR(-ENOMEM);
-
- dprintk("--> nfs4_referral_get_sb()\n");
-
- mount_info.mntfh = nfs_alloc_fhandle();
- if (mount_info.cloned == NULL || mount_info.mntfh == NULL)
- goto out;
-
- /* create a new volume representation */
- mount_info.server = nfs4_create_referral_server(mount_info.cloned, mount_info.mntfh);
- mntroot = nfs_fs_mount_common(flags, dev_name, &mount_info, &nfs_v4);
-out:
- nfs_free_fhandle(mount_info.mntfh);
- return mntroot;
+ return nfs_fs_mount_common(flags, dev_name, raw_data, &nfs_v4);
}
/*
@@ -282,23 +273,35 @@ static struct dentry *nfs4_referral_mount(struct file_system_type *fs_type,
int flags, const char *dev_name, void *raw_data)
{
struct nfs_clone_mount *data = raw_data;
+ struct nfs_mount_info mount_info = {
+ .fill_super = nfs_fill_super,
+ .set_security = nfs_clone_sb_security,
+ .cloned = data,
+ };
char *export_path;
struct vfsmount *root_mnt;
struct dentry *res;
dprintk("--> nfs4_referral_mount()\n");
+ mount_info.mntfh = nfs_alloc_fhandle();
+ if (!mount_info.mntfh)
+ return ERR_PTR(-ENOMEM);
+
export_path = data->mnt_path;
data->mnt_path = "/";
-
root_mnt = nfs_do_root_mount(&nfs4_remote_referral_fs_type,
- flags, data, data->hostname);
+ nfs4_create_referral_server(mount_info.cloned,
+ mount_info.mntfh),
+ flags, &mount_info, data->hostname);
data->mnt_path = export_path;
res = nfs_follow_remote_path(root_mnt, export_path);
dprintk("<-- nfs4_referral_mount() = %d%s\n",
PTR_ERR_OR_ZERO(res),
IS_ERR(res) ? " [error]" : "");
+
+ nfs_free_fhandle(mount_info.mntfh);
return res;
}
--
2.17.2
From: David Howells <[email protected]>
Add filesystem context support to NFS, parsing the options in advance and
attaching the information to struct nfs_fs_context. The highlights are:
(*) Merge nfs_mount_info and nfs_clone_mount into nfs_fs_context. This
structure represents NFS's superblock config.
(*) Make use of the VFS's parsing support to split comma-separated lists
(*) Pin the NFS protocol module in the nfs_fs_context.
(*) Attach supplementary error information to fs_context. This has the
downside that these strings must be static and can't be formatted.
(*) Remove the auxiliary file_system_type structs since the information
necessary can be conveyed in the nfs_fs_context struct instead.
(*) Root mounts are made by duplicating the config for the requested mount
so as to have the same parameters. Submounts pick up their parameters
from the parent superblock.
[AV -- retrans is u32, not string]
[SM -- Renamed cfg to ctx in a few functions in an earlier patch]
[SM -- Moved fs_context mount option parsing to an earlier patch]
[SM -- Moved fs_context error logging to a later patch]
[SM -- Fixed printks in nfs4_try_get_tree() and nfs4_get_referral_tree()]
[SM -- Added is_remount_fc() helper]
[SM -- Deferred some refactoring to a later patch]
[SM -- Fixed referral mounts, which were broken in the original patch]
[SM -- Fixed leak of nfs_fattr when fs_context is freed]
Signed-off-by: David Howells <[email protected]>
Signed-off-by: Al Viro <[email protected]>
Signed-off-by: Scott Mayhew <[email protected]>
---
fs/nfs/fs_context.c | 470 +++++++++++++++++++++++++++-------------
fs/nfs/internal.h | 74 +++----
fs/nfs/namespace.c | 134 +++++++-----
fs/nfs/nfs3proc.c | 2 +-
fs/nfs/nfs4_fs.h | 9 +-
fs/nfs/nfs4namespace.c | 291 ++++++++++++++-----------
fs/nfs/nfs4proc.c | 2 +-
fs/nfs/nfs4super.c | 151 +++++++------
fs/nfs/proc.c | 2 +-
fs/nfs/super.c | 286 +++++++-----------------
include/linux/nfs_xdr.h | 6 +-
11 files changed, 768 insertions(+), 659 deletions(-)
diff --git a/fs/nfs/fs_context.c b/fs/nfs/fs_context.c
index 9a3162055d5d..ac1a8d7d7393 100644
--- a/fs/nfs/fs_context.c
+++ b/fs/nfs/fs_context.c
@@ -3,6 +3,7 @@
* linux/fs/nfs/fs_context.c
*
* Copyright (C) 1992 Rick Sladkey
+ * Conversion to new mount api Copyright (C) David Howells
*
* NFS mount handling.
*
@@ -467,21 +468,31 @@ static int nfs_parse_version_string(struct nfs_fs_context *ctx,
/*
* Parse a single mount parameter.
*/
-static int nfs_fs_context_parse_param(struct nfs_fs_context *ctx,
+static int nfs_fs_context_parse_param(struct fs_context *fc,
struct fs_parameter *param)
{
struct fs_parse_result result;
+ struct nfs_fs_context *ctx = nfs_fc2context(fc);
unsigned short protofamily, mountfamily;
unsigned int len;
int ret, opt;
dfprintk(MOUNT, "NFS: parsing nfs mount option '%s'\n", param->key);
- opt = fs_parse(NULL, &nfs_fs_parameters, param, &result);
+ opt = fs_parse(fc, &nfs_fs_parameters, param, &result);
if (opt < 0)
return ctx->sloppy ? 1 : opt;
switch (opt) {
+ case Opt_source:
+ if (fc->source) {
+ dfprintk(MOUNT, "NFS: Multiple sources not supported\n");
+ return -EINVAL;
+ }
+ fc->source = param->string;
+ param->string = NULL;
+ break;
+
/*
* boolean options: foo/nofoo
*/
@@ -807,112 +818,6 @@ static int nfs_fs_context_parse_param(struct nfs_fs_context *ctx,
return -ERANGE;
}
-/* cribbed from generic_parse_monolithic and vfs_parse_fs_string */
-static int nfs_fs_context_parse_option(struct nfs_fs_context *ctx, char *p)
-{
- int ret;
- char *key = p, *value;
- size_t v_size = 0;
- struct fs_parameter param;
-
- memset(¶m, 0, sizeof(param));
- value = strchr(key, '=');
- if (value && value != key) {
- *value++ = 0;
- v_size = strlen(value);
- }
- param.key = key;
- param.type = fs_value_is_flag;
- param.size = v_size;
- if (v_size > 0) {
- param.type = fs_value_is_string;
- param.string = kmemdup_nul(value, v_size, GFP_KERNEL);
- if (!param.string)
- return -ENOMEM;
- }
- ret = nfs_fs_context_parse_param(ctx, ¶m);
- kfree(param.string);
- return ret;
-}
-
-/*
- * Error-check and convert a string of mount options from user space into
- * a data structure. The whole mount string is processed; bad options are
- * skipped as they are encountered. If there were no errors, return 1;
- * otherwise return 0 (zero).
- */
-int nfs_parse_mount_options(char *raw, struct nfs_fs_context *ctx)
-{
- char *p;
- int rc, sloppy = 0, invalid_option = 0;
-
- if (!raw) {
- dfprintk(MOUNT, "NFS: mount options string was NULL.\n");
- return 1;
- }
- dfprintk(MOUNT, "NFS: nfs mount opts='%s'\n", raw);
-
- rc = security_sb_eat_lsm_opts(raw, &ctx->lsm_opts);
- if (rc)
- goto out_security_failure;
-
- while ((p = strsep(&raw, ",")) != NULL) {
- if (!*p)
- continue;
- if (nfs_fs_context_parse_option(ctx, p) < 0)
- invalid_option = true;
- }
-
- if (!sloppy && invalid_option)
- return 0;
-
- if (ctx->minorversion && ctx->version != 4)
- goto out_minorversion_mismatch;
-
- if (ctx->options & NFS_OPTION_MIGRATION &&
- (ctx->version != 4 || ctx->minorversion != 0))
- goto out_migration_misuse;
-
- /*
- * verify that any proto=/mountproto= options match the address
- * families in the addr=/mountaddr= options.
- */
- if (ctx->protofamily != AF_UNSPEC &&
- ctx->protofamily != ctx->nfs_server.address.sa_family)
- goto out_proto_mismatch;
-
- if (ctx->mountfamily != AF_UNSPEC) {
- if (ctx->mount_server.addrlen) {
- if (ctx->mountfamily != ctx->mount_server.address.sa_family)
- goto out_mountproto_mismatch;
- } else {
- if (ctx->mountfamily != ctx->nfs_server.address.sa_family)
- goto out_mountproto_mismatch;
- }
- }
-
- return 1;
-
-out_minorversion_mismatch:
- printk(KERN_INFO "NFS: mount option vers=%u does not support "
- "minorversion=%u\n", ctx->version, ctx->minorversion);
- return 0;
-out_mountproto_mismatch:
- printk(KERN_INFO "NFS: mount server address does not match mountproto= "
- "option\n");
- return 0;
-out_proto_mismatch:
- printk(KERN_INFO "NFS: server address does not match proto= option\n");
- return 0;
-out_migration_misuse:
- printk(KERN_INFO
- "NFS: 'migration' not supported for this NFS version\n");
- return -EINVAL;
-out_security_failure:
- printk(KERN_INFO "NFS: security options invalid: %d\n", rc);
- return 0;
-}
-
/*
* Split "dev_name" into "hostname:export_path".
*
@@ -990,6 +895,11 @@ static int nfs_parse_devname(struct nfs_fs_context *ctx,
return -ENAMETOOLONG;
}
+static inline bool is_remount_fc(struct fs_context *fc)
+{
+ return fc->root != NULL;
+}
+
/*
* Parse monolithic NFS2/NFS3 mount data
* - fills in the mount root filehandle
@@ -1006,12 +916,11 @@ static int nfs_parse_devname(struct nfs_fs_context *ctx,
* + breaking back: trying proto=udp after proto=tcp, v2 after v3,
* mountproto=tcp after mountproto=udp, and so on
*/
-static int nfs23_validate_mount_data(void *options,
- struct nfs_fs_context *ctx,
- struct nfs_fh *mntfh,
- const char *dev_name)
+static int nfs23_parse_monolithic(struct fs_context *fc,
+ struct nfs_mount_data *data)
{
- struct nfs_mount_data *data = (struct nfs_mount_data *)options;
+ struct nfs_fs_context *ctx = nfs_fc2context(fc);
+ struct nfs_fh *mntfh = ctx->mount_info.mntfh;
struct sockaddr *sap = (struct sockaddr *)&ctx->nfs_server.address;
int extra_flags = NFS_MOUNT_LEGACY_INTERFACE;
@@ -1083,6 +992,9 @@ static int nfs23_validate_mount_data(void *options,
ctx->nfs_server.protocol = XPRT_TRANSPORT_UDP;
/* N.B. caller will free nfs_server.hostname in all cases */
ctx->nfs_server.hostname = kstrdup(data->hostname, GFP_KERNEL);
+ if (!ctx->nfs_server.hostname)
+ goto out_nomem;
+
ctx->namlen = data->namlen;
ctx->bsize = data->bsize;
@@ -1090,8 +1002,6 @@ static int nfs23_validate_mount_data(void *options,
ctx->selected_flavor = data->pseudoflavor;
else
ctx->selected_flavor = RPC_AUTH_UNIX;
- if (!ctx->nfs_server.hostname)
- goto out_nomem;
if (!(data->flags & NFS_MOUNT_NONLM))
ctx->flags &= ~(NFS_MOUNT_LOCAL_FLOCK|
@@ -1109,12 +1019,13 @@ static int nfs23_validate_mount_data(void *options,
*/
if (data->context[0]){
#ifdef CONFIG_SECURITY_SELINUX
- int rc;
+ int ret;
+
data->context[NFS_MAX_CONTEXT_LEN] = '\0';
- rc = security_add_mnt_opt("context", data->context,
- strlen(data->context), ctx->lsm_opts);
- if (rc)
- return rc;
+ ret = vfs_parse_fs_string(fc, "context",
+ data->context, strlen(data->context));
+ if (ret < 0)
+ return ret;
#else
return -EINVAL;
#endif
@@ -1122,12 +1033,20 @@ static int nfs23_validate_mount_data(void *options,
break;
default:
- return NFS_TEXT_DATA;
+ goto generic;
}
+ ctx->skip_reconfig_option_check = true;
return 0;
+generic:
+ return generic_parse_monolithic(fc, data);
+
out_no_data:
+ if (is_remount_fc(fc)) {
+ ctx->skip_reconfig_option_check = true;
+ return 0;
+ }
dfprintk(MOUNT, "NFS: mount program didn't pass any mount data\n");
return -EINVAL;
@@ -1163,12 +1082,11 @@ static void nfs4_validate_mount_flags(struct nfs_fs_context *ctx)
/*
* Validate NFSv4 mount options
*/
-static int nfs4_validate_mount_data(void *options,
- struct nfs_fs_context *ctx,
- const char *dev_name)
+static int nfs4_parse_monolithic(struct fs_context *fc,
+ struct nfs4_mount_data *data)
{
+ struct nfs_fs_context *ctx = nfs_fc2context(fc);
struct sockaddr *sap = (struct sockaddr *)&ctx->nfs_server.address;
- struct nfs4_mount_data *data = (struct nfs4_mount_data *)options;
char *c;
if (data == NULL)
@@ -1218,7 +1136,7 @@ static int nfs4_validate_mount_data(void *options,
ctx->client_address = c;
/*
- * Translate to nfs_fs_context, which nfs4_fill_super
+ * Translate to nfs_fs_context, which nfs_fill_super
* can deal with.
*/
@@ -1238,12 +1156,20 @@ static int nfs4_validate_mount_data(void *options,
break;
default:
- return NFS_TEXT_DATA;
+ goto generic;
}
+ ctx->skip_reconfig_option_check = true;
return 0;
+generic:
+ return generic_parse_monolithic(fc, data);
+
out_no_data:
+ if (is_remount_fc(fc)) {
+ ctx->skip_reconfig_option_check = true;
+ return 0;
+ }
dfprintk(MOUNT, "NFS4: mount program didn't pass any mount data\n");
return -EINVAL;
@@ -1260,39 +1186,66 @@ static int nfs4_validate_mount_data(void *options,
dfprintk(MOUNT, "NFSv4: Unsupported transport protocol udp\n");
return -EINVAL;
}
+#endif
-int nfs_validate_mount_data(struct file_system_type *fs_type,
- void *options,
- struct nfs_fs_context *ctx,
- struct nfs_fh *mntfh,
- const char *dev_name)
-{
- if (fs_type == &nfs_fs_type)
- return nfs23_validate_mount_data(options, ctx, mntfh, dev_name);
- return nfs4_validate_mount_data(options, ctx, dev_name);
-}
-#else
-int nfs_validate_mount_data(struct file_system_type *fs_type,
- void *options,
- struct nfs_fs_context *ctx,
- struct nfs_fh *mntfh,
- const char *dev_name)
+/*
+ * Parse a monolithic block of data from sys_mount().
+ */
+static int nfs_fs_context_parse_monolithic(struct fs_context *fc,
+ void *data)
{
- return nfs23_validate_mount_data(options, ctx, mntfh, dev_name);
-}
+ if (fc->fs_type == &nfs_fs_type)
+ return nfs23_parse_monolithic(fc, data);
+
+#if IS_ENABLED(CONFIG_NFS_V4)
+ if (fc->fs_type == &nfs4_fs_type)
+ return nfs4_parse_monolithic(fc, data);
#endif
-int nfs_validate_text_mount_data(void *options,
- struct nfs_fs_context *ctx,
- const char *dev_name)
+ dfprintk(MOUNT, "NFS: Unsupported monolithic data version\n");
+ return -EINVAL;
+}
+
+/*
+ * Validate the preparsed information in the config.
+ */
+static int nfs_fs_context_validate(struct fs_context *fc)
{
- int port = 0;
+ struct nfs_fs_context *ctx = nfs_fc2context(fc);
+ struct nfs_subversion *nfs_mod;
+ struct sockaddr *sap = (struct sockaddr *)&ctx->nfs_server.address;
int max_namelen = PAGE_SIZE;
int max_pathlen = NFS_MAXPATHLEN;
- struct sockaddr *sap = (struct sockaddr *)&ctx->nfs_server.address;
+ int port = 0;
+ int ret;
- if (nfs_parse_mount_options((char *)options, ctx) == 0)
- return -EINVAL;
+ if (!fc->source)
+ goto out_no_device_name;
+
+ /* Check for sanity first. */
+ if (ctx->minorversion && ctx->version != 4)
+ goto out_minorversion_mismatch;
+
+ if (ctx->options & NFS_OPTION_MIGRATION &&
+ (ctx->version != 4 || ctx->minorversion != 0))
+ goto out_migration_misuse;
+
+ /* Verify that any proto=/mountproto= options match the address
+ * families in the addr=/mountaddr= options.
+ */
+ if (ctx->protofamily != AF_UNSPEC &&
+ ctx->protofamily != ctx->nfs_server.address.sa_family)
+ goto out_proto_mismatch;
+
+ if (ctx->mountfamily != AF_UNSPEC) {
+ if (ctx->mount_server.addrlen) {
+ if (ctx->mountfamily != ctx->mount_server.address.sa_family)
+ goto out_mountproto_mismatch;
+ } else {
+ if (ctx->mountfamily != ctx->nfs_server.address.sa_family)
+ goto out_mountproto_mismatch;
+ }
+ }
if (!nfs_verify_server_address(sap))
goto out_no_address;
@@ -1320,8 +1273,24 @@ int nfs_validate_text_mount_data(void *options,
nfs_set_port(sap, &ctx->nfs_server.port, port);
- return nfs_parse_devname(ctx, dev_name, max_namelen, max_pathlen);
+ ret = nfs_parse_devname(ctx, fc->source, max_namelen, max_pathlen);
+ if (ret < 0)
+ return ret;
+
+ /* Load the NFS protocol module if we haven't done so yet */
+ if (!ctx->mount_info.nfs_mod) {
+ nfs_mod = get_nfs_version(ctx->version);
+ if (IS_ERR(nfs_mod)) {
+ ret = PTR_ERR(nfs_mod);
+ goto out_version_unavailable;
+ }
+ ctx->mount_info.nfs_mod = nfs_mod;
+ }
+ return 0;
+out_no_device_name:
+ dfprintk(MOUNT, "NFS: Device name not specified\n");
+ return -EINVAL;
#if !IS_ENABLED(CONFIG_NFS_V4)
out_v4_not_compiled:
dfprintk(MOUNT, "NFS: NFSv4 is not compiled into kernel\n");
@@ -1331,8 +1300,201 @@ int nfs_validate_text_mount_data(void *options,
dfprintk(MOUNT, "NFSv4: Unsupported transport protocol udp\n");
return -EINVAL;
#endif /* !CONFIG_NFS_V4 */
-
out_no_address:
dfprintk(MOUNT, "NFS: mount program didn't pass remote address\n");
return -EINVAL;
+out_mountproto_mismatch:
+ dfprintk(MOUNT, "NFS: Mount server address does not match mountproto= option\n");
+ return -EINVAL;
+out_proto_mismatch:
+ dfprintk(MOUNT, "NFS: Server address does not match proto= option\n");
+ return -EINVAL;
+out_minorversion_mismatch:
+ dfprintk(MOUNT, "NFS: Mount option vers=%u does not support minorversion=%u\n",
+ ctx->version, ctx->minorversion);
+ return -EINVAL;
+out_migration_misuse:
+ dfprintk(MOUNT, "NFS: 'Migration' not supported for this NFS version\n");
+ return -EINVAL;
+out_version_unavailable:
+ dfprintk(MOUNT, "NFS: Version unavailable\n");
+ return ret;
+}
+
+/*
+ * Create an NFS superblock by the appropriate method.
+ */
+static int nfs_get_tree(struct fs_context *fc)
+{
+ struct nfs_fs_context *ctx = nfs_fc2context(fc);
+ int err = nfs_fs_context_validate(fc);
+
+ if (err)
+ return err;
+ if (!ctx->internal)
+ return ctx->mount_info.nfs_mod->rpc_ops->try_get_tree(fc);
+ else
+ return nfs_get_tree_common(fc);
}
+
+/*
+ * Handle duplication of a configuration. The caller copied *src into *sc, but
+ * it can't deal with resource pointers in the filesystem context, so we have
+ * to do that. We need to clear pointers, copy data or get extra refs as
+ * appropriate.
+ */
+static int nfs_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc)
+{
+ struct nfs_fs_context *src = nfs_fc2context(src_fc), *ctx;
+
+ ctx = kmemdup(src, sizeof(struct nfs_fs_context), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+
+ ctx->mount_info.mntfh = nfs_alloc_fhandle();
+ if (!ctx->mount_info.mntfh) {
+ kfree(ctx);
+ return -ENOMEM;
+ }
+ nfs_copy_fh(ctx->mount_info.mntfh, src->mount_info.mntfh);
+
+ __module_get(ctx->mount_info.nfs_mod->owner);
+ ctx->client_address = NULL;
+ ctx->mount_server.hostname = NULL;
+ ctx->nfs_server.export_path = NULL;
+ ctx->nfs_server.hostname = NULL;
+ ctx->fscache_uniq = NULL;
+ ctx->clone_data.addr = NULL;
+ ctx->clone_data.fattr = NULL;
+ fc->fs_private = ctx;
+ return 0;
+}
+
+static void nfs_fs_context_free(struct fs_context *fc)
+{
+ struct nfs_fs_context *ctx = nfs_fc2context(fc);
+
+ if (ctx) {
+ if (ctx->mount_info.server)
+ nfs_free_server(ctx->mount_info.server);
+ if (ctx->mount_info.nfs_mod)
+ put_nfs_version(ctx->mount_info.nfs_mod);
+ kfree(ctx->client_address);
+ kfree(ctx->mount_server.hostname);
+ kfree(ctx->nfs_server.export_path);
+ kfree(ctx->nfs_server.hostname);
+ kfree(ctx->fscache_uniq);
+ nfs_free_fhandle(ctx->mount_info.mntfh);
+ kfree(ctx->clone_data.addr);
+ nfs_free_fattr(ctx->clone_data.fattr);
+ kfree(ctx);
+ }
+}
+
+static const struct fs_context_operations nfs_fs_context_ops = {
+ .free = nfs_fs_context_free,
+ .dup = nfs_fs_context_dup,
+ .parse_param = nfs_fs_context_parse_param,
+ .parse_monolithic = nfs_fs_context_parse_monolithic,
+ .get_tree = nfs_get_tree,
+ .reconfigure = nfs_reconfigure,
+};
+
+/*
+ * Prepare superblock configuration. We use the namespaces attached to the
+ * context. This may be the current process's namespaces, or it may be a
+ * container's namespaces.
+ */
+static int nfs_init_fs_context(struct fs_context *fc)
+{
+ struct nfs_fs_context *ctx;
+
+ ctx = kzalloc(sizeof(struct nfs_fs_context), GFP_KERNEL);
+ if (unlikely(!ctx))
+ return -ENOMEM;
+
+ ctx->mount_info.ctx = ctx;
+ ctx->mount_info.mntfh = nfs_alloc_fhandle();
+ if (unlikely(!ctx->mount_info.mntfh)) {
+ kfree(ctx);
+ return -ENOMEM;
+ }
+
+ ctx->protofamily = AF_UNSPEC;
+ ctx->mountfamily = AF_UNSPEC;
+ ctx->mount_server.port = NFS_UNSPEC_PORT;
+
+ if (fc->root) {
+ /* reconfigure, start with the current config */
+ struct nfs_server *nfss = fc->root->d_sb->s_fs_info;
+ struct net *net = nfss->nfs_client->cl_net;
+
+ ctx->flags = nfss->flags;
+ ctx->rsize = nfss->rsize;
+ ctx->wsize = nfss->wsize;
+ ctx->retrans = nfss->client->cl_timeout->to_retries;
+ ctx->selected_flavor = nfss->client->cl_auth->au_flavor;
+ ctx->acregmin = nfss->acregmin / HZ;
+ ctx->acregmax = nfss->acregmax / HZ;
+ ctx->acdirmin = nfss->acdirmin / HZ;
+ ctx->acdirmax = nfss->acdirmax / HZ;
+ ctx->timeo = 10U * nfss->client->cl_timeout->to_initval / HZ;
+ ctx->nfs_server.port = nfss->port;
+ ctx->nfs_server.addrlen = nfss->nfs_client->cl_addrlen;
+ ctx->version = nfss->nfs_client->rpc_ops->version;
+ ctx->minorversion = nfss->nfs_client->cl_minorversion;
+
+ memcpy(&ctx->nfs_server.address, &nfss->nfs_client->cl_addr,
+ ctx->nfs_server.addrlen);
+
+ if (fc->net_ns != net) {
+ put_net(fc->net_ns);
+ fc->net_ns = get_net(net);
+ }
+
+ ctx->mount_info.nfs_mod = nfss->nfs_client->cl_nfs_mod;
+ __module_get(ctx->mount_info.nfs_mod->owner);
+ } else {
+ /* defaults */
+ ctx->timeo = NFS_UNSPEC_TIMEO;
+ ctx->retrans = NFS_UNSPEC_RETRANS;
+ ctx->acregmin = NFS_DEF_ACREGMIN;
+ ctx->acregmax = NFS_DEF_ACREGMAX;
+ ctx->acdirmin = NFS_DEF_ACDIRMIN;
+ ctx->acdirmax = NFS_DEF_ACDIRMAX;
+ ctx->nfs_server.port = NFS_UNSPEC_PORT;
+ ctx->nfs_server.protocol = XPRT_TRANSPORT_TCP;
+ ctx->selected_flavor = RPC_AUTH_MAXFLAVOR;
+ ctx->minorversion = 0;
+ ctx->need_mount = true;
+ }
+ ctx->net = fc->net_ns;
+ fc->fs_private = ctx;
+ fc->ops = &nfs_fs_context_ops;
+ return 0;
+}
+
+struct file_system_type nfs_fs_type = {
+ .owner = THIS_MODULE,
+ .name = "nfs",
+ .init_fs_context = nfs_init_fs_context,
+ .parameters = &nfs_fs_parameters,
+ .kill_sb = nfs_kill_super,
+ .fs_flags = FS_RENAME_DOES_D_MOVE|FS_BINARY_MOUNTDATA,
+};
+MODULE_ALIAS_FS("nfs");
+EXPORT_SYMBOL_GPL(nfs_fs_type);
+
+#if IS_ENABLED(CONFIG_NFS_V4)
+struct file_system_type nfs4_fs_type = {
+ .owner = THIS_MODULE,
+ .name = "nfs4",
+ .init_fs_context = nfs_init_fs_context,
+ .parameters = &nfs_fs_parameters,
+ .kill_sb = nfs_kill_super,
+ .fs_flags = FS_RENAME_DOES_D_MOVE|FS_BINARY_MOUNTDATA,
+};
+MODULE_ALIAS_FS("nfs4");
+MODULE_ALIAS("nfs4");
+EXPORT_SYMBOL_GPL(nfs4_fs_type);
+#endif /* CONFIG_NFS_V4 */
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 06aae88a8fa1..ccbff3a9ccf6 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -4,7 +4,7 @@
*/
#include "nfs4_fs.h"
-#include <linux/mount.h>
+#include <linux/fs_context.h>
#include <linux/security.h>
#include <linux/crc32.h>
#include <linux/sunrpc/addr.h>
@@ -16,6 +16,7 @@
extern const struct export_operations nfs_export_ops;
struct nfs_string;
+struct nfs_pageio_descriptor;
static inline void nfs_attr_check_mountpoint(struct super_block *parent, struct nfs_fattr *fattr)
{
@@ -34,12 +35,13 @@ static inline int nfs_attr_use_mounted_on_fileid(struct nfs_fattr *fattr)
struct nfs_clone_mount {
const struct super_block *sb;
- const struct dentry *dentry;
+ struct dentry *dentry;
char *hostname;
char *mnt_path;
struct sockaddr *addr;
size_t addrlen;
rpc_authflavor_t authflavor;
+ struct nfs_fattr *fattr;
};
/*
@@ -78,10 +80,23 @@ struct nfs_client_initdata {
const struct cred *cred;
};
+struct nfs_mount_info {
+ unsigned int inherited_bsize;
+ struct nfs_fs_context *ctx;
+ struct nfs_clone_mount *cloned;
+ struct nfs_server *server;
+ struct nfs_fh *mntfh;
+ struct nfs_subversion *nfs_mod;
+};
+
/*
* In-kernel mount arguments
*/
struct nfs_fs_context {
+ bool internal;
+ bool skip_reconfig_option_check;
+ bool need_mount;
+ bool sloppy;
unsigned int flags; /* NFS{,4}_MOUNT_* flags */
unsigned int rsize, wsize;
unsigned int timeo, retrans;
@@ -98,8 +113,6 @@ struct nfs_fs_context {
char *fscache_uniq;
unsigned short protofamily;
unsigned short mountfamily;
- bool need_mount;
- bool sloppy;
struct {
union {
@@ -124,14 +137,23 @@ struct nfs_fs_context {
int port;
unsigned short protocol;
unsigned short nconnect;
+ unsigned short export_path_len;
} nfs_server;
void *lsm_opts;
struct net *net;
char buf[32]; /* Parse buffer */
+
+ struct nfs_mount_info mount_info;
+ struct nfs_clone_mount clone_data;
};
+static inline struct nfs_fs_context *nfs_fc2context(const struct fs_context *fc)
+{
+ return fc->fs_private;
+}
+
/* mount_clnt.c */
struct nfs_mount_request {
struct sockaddr *sap;
@@ -147,15 +169,6 @@ struct nfs_mount_request {
struct net *net;
};
-struct nfs_mount_info {
- unsigned int inherited_bsize;
- struct nfs_fs_context *ctx;
- struct nfs_clone_mount *cloned;
- struct nfs_server *server;
- struct nfs_fh *mntfh;
- struct nfs_subversion *nfs_mod;
-};
-
extern int nfs_mount(struct nfs_mount_request *info);
extern void nfs_umount(const struct nfs_mount_request *info);
@@ -235,22 +248,8 @@ static inline void nfs_fs_proc_exit(void)
extern const struct svc_version nfs4_callback_version1;
extern const struct svc_version nfs4_callback_version4;
-struct nfs_pageio_descriptor;
-
-/* mount.c */
-#define NFS_TEXT_DATA 1
-
-extern struct nfs_fs_context *nfs_alloc_parsed_mount_data(void);
-extern void nfs_free_parsed_mount_data(struct nfs_fs_context *ctx);
-extern int nfs_parse_mount_options(char *raw, struct nfs_fs_context *ctx);
-extern int nfs_validate_mount_data(struct file_system_type *fs_type,
- void *options,
- struct nfs_fs_context *ctx,
- struct nfs_fh *mntfh,
- const char *dev_name);
-extern int nfs_validate_text_mount_data(void *options,
- struct nfs_fs_context *ctx,
- const char *dev_name);
+/* fs_context.c */
+extern struct file_system_type nfs_fs_type;
/* pagelist.c */
extern int __init nfs_init_nfspagecache(void);
@@ -411,14 +410,9 @@ extern int nfs_wait_atomic_killable(atomic_t *p, unsigned int mode);
/* super.c */
extern const struct super_operations nfs_sops;
-extern struct file_system_type nfs_fs_type;
-extern struct file_system_type nfs_prepared_fs_type;
-#if IS_ENABLED(CONFIG_NFS_V4)
-extern struct file_system_type nfs4_referral_fs_type;
-#endif
bool nfs_auth_info_match(const struct nfs_auth_info *, rpc_authflavor_t);
-struct dentry *nfs_try_mount(int, const char *, struct nfs_mount_info *);
-struct dentry *nfs_fs_mount(struct file_system_type *, int, const char *, void *);
+int nfs_try_get_tree(struct fs_context *);
+int nfs_get_tree_common(struct fs_context *);
void nfs_kill_super(struct super_block *);
extern struct rpc_stat nfs_rpcstat;
@@ -446,10 +440,8 @@ static inline bool nfs_file_io_is_buffered(struct nfs_inode *nfsi)
extern char *nfs_path(char **p, struct dentry *dentry,
char *buffer, ssize_t buflen, unsigned flags);
extern struct vfsmount *nfs_d_automount(struct path *path);
-struct vfsmount *nfs_submount(struct nfs_server *, struct dentry *,
- struct nfs_fh *, struct nfs_fattr *);
-struct vfsmount *nfs_do_submount(struct dentry *, struct nfs_fh *,
- struct nfs_fattr *, rpc_authflavor_t);
+int nfs_submount(struct fs_context *, struct nfs_server *);
+int nfs_do_submount(struct fs_context *);
/* getroot.c */
extern struct dentry *nfs_get_root(struct super_block *, struct nfs_fh *,
@@ -476,7 +468,7 @@ int nfs_show_options(struct seq_file *, struct dentry *);
int nfs_show_devname(struct seq_file *, struct dentry *);
int nfs_show_path(struct seq_file *, struct dentry *);
int nfs_show_stats(struct seq_file *, struct dentry *);
-int nfs_remount(struct super_block *sb, int *flags, char *raw_data);
+int nfs_reconfigure(struct fs_context *);
/* write.c */
extern void nfs_pageio_init_write(struct nfs_pageio_descriptor *pgio,
diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c
index 72a99f9c7390..927b0f732148 100644
--- a/fs/nfs/namespace.c
+++ b/fs/nfs/namespace.c
@@ -140,31 +140,62 @@ EXPORT_SYMBOL_GPL(nfs_path);
*/
struct vfsmount *nfs_d_automount(struct path *path)
{
- struct vfsmount *mnt;
+ struct nfs_fs_context *ctx;
+ struct fs_context *fc;
+ struct vfsmount *mnt = ERR_PTR(-ENOMEM);
struct nfs_server *server = NFS_SERVER(d_inode(path->dentry));
- struct nfs_fh *fh = NULL;
- struct nfs_fattr *fattr = NULL;
+ struct nfs_client *client = server->nfs_client;
+ int ret;
if (IS_ROOT(path->dentry))
return ERR_PTR(-ESTALE);
- mnt = ERR_PTR(-ENOMEM);
- fh = nfs_alloc_fhandle();
- fattr = nfs_alloc_fattr();
- if (fh == NULL || fattr == NULL)
- goto out;
+ /* Open a new filesystem context, transferring parameters from the
+ * parent superblock, including the network namespace.
+ */
+ fc = fs_context_for_submount(&nfs_fs_type, path->dentry);
+ if (IS_ERR(fc))
+ return ERR_CAST(fc);
- mnt = server->nfs_client->rpc_ops->submount(server, path->dentry, fh, fattr);
+ ctx = nfs_fc2context(fc);
+ ctx->clone_data.dentry = path->dentry;
+ ctx->clone_data.sb = path->dentry->d_sb;
+ ctx->clone_data.fattr = nfs_alloc_fattr();
+ if (!ctx->clone_data.fattr)
+ goto out_fc;
+
+ if (fc->net_ns != client->cl_net) {
+ put_net(fc->net_ns);
+ fc->net_ns = get_net(client->cl_net);
+ }
+
+ /* for submounts we want the same server; referrals will reassign */
+ memcpy(&ctx->nfs_server.address, &client->cl_addr, client->cl_addrlen);
+ ctx->nfs_server.addrlen = client->cl_addrlen;
+ ctx->nfs_server.port = server->port;
+
+ ctx->version = client->rpc_ops->version;
+ ctx->minorversion = client->cl_minorversion;
+ ctx->mount_info.nfs_mod = client->cl_nfs_mod;
+ __module_get(ctx->mount_info.nfs_mod->owner);
+
+ ret = client->rpc_ops->submount(fc, server);
+ if (ret < 0) {
+ mnt = ERR_PTR(ret);
+ goto out_fc;
+ }
+
+ up_write(&fc->root->d_sb->s_umount);
+ mnt = vfs_create_mount(fc);
if (IS_ERR(mnt))
- goto out;
+ goto out_fc;
mntget(mnt); /* prevent immediate expiration */
mnt_set_expiry(mnt, &nfs_automount_list);
schedule_delayed_work(&nfs_automount_task, nfs_mountpoint_expiry_timeout);
-out:
- nfs_free_fattr(fattr);
- nfs_free_fhandle(fh);
+out_fc:
+ put_fs_context(fc);
return mnt;
}
@@ -219,61 +250,62 @@ void nfs_release_automount_timer(void)
* @authflavor: security flavor to use when performing the mount
*
*/
-struct vfsmount *nfs_do_submount(struct dentry *dentry, struct nfs_fh *fh,
- struct nfs_fattr *fattr, rpc_authflavor_t authflavor)
+int nfs_do_submount(struct fs_context *fc)
{
- struct super_block *sb = dentry->d_sb;
- struct nfs_clone_mount mountdata = {
- .sb = sb,
- .dentry = dentry,
- .authflavor = authflavor,
- };
- struct nfs_mount_info mount_info = {
- .inherited_bsize = sb->s_blocksize_bits,
- .cloned = &mountdata,
- .mntfh = fh,
- .nfs_mod = NFS_SB(sb)->nfs_client->cl_nfs_mod,
- };
+ struct nfs_fs_context *ctx = nfs_fc2context(fc);
+ struct dentry *dentry = ctx->clone_data.dentry;
struct nfs_server *server;
- struct vfsmount *mnt;
- char *page = (char *) __get_free_page(GFP_USER);
- char *devname;
+ char *buffer, *p;
+ int ret;
- if (page == NULL)
- return ERR_PTR(-ENOMEM);
+ /* create a new volume representation */
+ server = ctx->mount_info.nfs_mod->rpc_ops->clone_server(NFS_SB(ctx->clone_data.sb),
+ ctx->mount_info.mntfh,
+ ctx->clone_data.fattr,
+ ctx->selected_flavor);
- server = mount_info.nfs_mod->rpc_ops->clone_server(NFS_SB(sb), fh,
- fattr, authflavor);
if (IS_ERR(server))
- return ERR_CAST(server);
+ return PTR_ERR(server);
- mount_info.server = server;
+ ctx->mount_info.server = server;
- devname = nfs_devname(dentry, page, PAGE_SIZE);
- if (IS_ERR(devname))
- mnt = ERR_CAST(devname);
- else
- mnt = vfs_submount(dentry, &nfs_prepared_fs_type, devname, &mount_info);
+ buffer = kmalloc(4096, GFP_USER);
+ if (!buffer)
+ return -ENOMEM;
- if (mount_info.server)
- nfs_free_server(mount_info.server);
- free_page((unsigned long)page);
- return mnt;
+ ctx->internal = true;
+ ctx->mount_info.inherited_bsize = ctx->clone_data.sb->s_blocksize_bits;
+
+ p = nfs_devname(dentry, buffer, 4096);
+ if (IS_ERR(p)) {
+ dprintk("NFS: Couldn't determine submount pathname\n");
+ ret = PTR_ERR(p);
+ } else {
+ ret = vfs_parse_fs_string(fc, "source", p, buffer + 4096 - p);
+ if (!ret)
+ ret = vfs_get_tree(fc);
+ }
+ kfree(buffer);
+ return ret;
}
EXPORT_SYMBOL_GPL(nfs_do_submount);
-struct vfsmount *nfs_submount(struct nfs_server *server, struct dentry *dentry,
- struct nfs_fh *fh, struct nfs_fattr *fattr)
+int nfs_submount(struct fs_context *fc, struct nfs_server *server)
{
- int err;
+ struct nfs_fs_context *ctx = nfs_fc2context(fc);
+ struct dentry *dentry = ctx->clone_data.dentry;
struct dentry *parent = dget_parent(dentry);
+ int err;
/* Look it up again to get its attributes */
- err = server->nfs_client->rpc_ops->lookup(d_inode(parent), &dentry->d_name, fh, fattr, NULL);
+ err = server->nfs_client->rpc_ops->lookup(d_inode(parent), &dentry->d_name,
+ ctx->mount_info.mntfh, ctx->clone_data.fattr,
+ NULL);
dput(parent);
if (err != 0)
- return ERR_PTR(err);
+ return err;
- return nfs_do_submount(dentry, fh, fattr, server->client->cl_auth->au_flavor);
+ ctx->selected_flavor = server->client->cl_auth->au_flavor;
+ return nfs_do_submount(fc);
}
EXPORT_SYMBOL_GPL(nfs_submount);
diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c
index 9eb2f1a503ab..657041c3a03f 100644
--- a/fs/nfs/nfs3proc.c
+++ b/fs/nfs/nfs3proc.c
@@ -990,7 +990,7 @@ const struct nfs_rpc_ops nfs_v3_clientops = {
.nlmclnt_ops = &nlmclnt_fl_close_lock_ops,
.getroot = nfs3_proc_get_root,
.submount = nfs_submount,
- .try_mount = nfs_try_mount,
+ .try_get_tree = nfs_try_get_tree,
.getattr = nfs3_proc_getattr,
.setattr = nfs3_proc_setattr,
.lookup = nfs3_proc_lookup,
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index 784608d4982a..638d09cdb584 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -268,14 +268,13 @@ extern const struct dentry_operations nfs4_dentry_operations;
int nfs_atomic_open(struct inode *, struct dentry *, struct file *,
unsigned, umode_t);
-/* super.c */
+/* fs_context.c */
extern struct file_system_type nfs4_fs_type;
/* nfs4namespace.c */
struct rpc_clnt *nfs4_negotiate_security(struct rpc_clnt *, struct inode *,
const struct qstr *);
-struct vfsmount *nfs4_submount(struct nfs_server *, struct dentry *,
- struct nfs_fh *, struct nfs_fattr *);
+int nfs4_submount(struct fs_context *, struct nfs_server *);
int nfs4_replace_transport(struct nfs_server *server,
const struct nfs4_fs_locations *locations);
@@ -515,7 +514,6 @@ extern const nfs4_stateid invalid_stateid;
/* nfs4super.c */
struct nfs_mount_info;
extern struct nfs_subversion nfs_v4;
-struct dentry *nfs4_try_mount(int, const char *, struct nfs_mount_info *);
extern bool nfs4_disable_idmapping;
extern unsigned short max_session_slots;
extern unsigned short max_session_cb_slots;
@@ -525,6 +523,9 @@ extern bool recover_lost_locks;
#define NFS4_CLIENT_ID_UNIQ_LEN (64)
extern char nfs4_client_id_uniquifier[NFS4_CLIENT_ID_UNIQ_LEN];
+extern int nfs4_try_get_tree(struct fs_context *);
+extern int nfs4_get_referral_tree(struct fs_context *);
+
/* nfs4sysctl.c */
#ifdef CONFIG_SYSCTL
int nfs4_register_sysctl(void);
diff --git a/fs/nfs/nfs4namespace.c b/fs/nfs/nfs4namespace.c
index 2e460c33ae48..04985aebe184 100644
--- a/fs/nfs/nfs4namespace.c
+++ b/fs/nfs/nfs4namespace.c
@@ -8,6 +8,7 @@
* NFSv4 namespace
*/
+#include <linux/module.h>
#include <linux/dcache.h>
#include <linux/mount.h>
#include <linux/namei.h>
@@ -21,37 +22,64 @@
#include <linux/inet.h>
#include "internal.h"
#include "nfs4_fs.h"
+#include "nfs.h"
#include "dns_resolve.h"
#define NFSDBG_FACILITY NFSDBG_VFS
+/*
+ * Work out the length that an NFSv4 path would render to as a standard posix
+ * path, with a leading slash but no terminating slash.
+ */
+static ssize_t nfs4_pathname_len(const struct nfs4_pathname *pathname)
+{
+ ssize_t len = 0;
+ int i;
+
+ for (i = 0; i < pathname->ncomponents; i++) {
+ const struct nfs4_string *component = &pathname->components[i];
+
+ if (component->len > NAME_MAX)
+ goto too_long;
+ len += 1 + component->len; /* Adding "/foo" */
+ if (len > PATH_MAX)
+ goto too_long;
+ }
+ return len;
+
+too_long:
+ return -ENAMETOOLONG;
+}
+
/*
* Convert the NFSv4 pathname components into a standard posix path.
- *
- * Note that the resulting string will be placed at the end of the buffer
*/
-static inline char *nfs4_pathname_string(const struct nfs4_pathname *pathname,
- char *buffer, ssize_t buflen)
+static char *nfs4_pathname_string(const struct nfs4_pathname *pathname,
+ unsigned short *_len)
{
- char *end = buffer + buflen;
- int n;
+ ssize_t len;
+ char *buf, *p;
+ int i;
+
+ len = nfs4_pathname_len(pathname);
+ if (len < 0)
+ return ERR_PTR(len);
+ *_len = len;
+
+ p = buf = kmalloc(len + 1, GFP_KERNEL);
+ if (!buf)
+ return ERR_PTR(-ENOMEM);
+
+ for (i = 0; i < pathname->ncomponents; i++) {
+ const struct nfs4_string *component = &pathname->components[i];
- *--end = '\0';
- buflen--;
-
- n = pathname->ncomponents;
- while (--n >= 0) {
- const struct nfs4_string *component = &pathname->components[n];
- buflen -= component->len + 1;
- if (buflen < 0)
- goto Elong;
- end -= component->len;
- memcpy(end, component->data, component->len);
- *--end = '/';
+ *p++ = '/';
+ memcpy(p, component->data, component->len);
+ p += component->len;
}
- return end;
-Elong:
- return ERR_PTR(-ENAMETOOLONG);
+
+ *p = 0;
+ return buf;
}
/*
@@ -100,21 +128,28 @@ static char *nfs4_path(struct dentry *dentry, char *buffer, ssize_t buflen)
*/
static int nfs4_validate_fspath(struct dentry *dentry,
const struct nfs4_fs_locations *locations,
- char *page, char *page2)
+ struct nfs_fs_context *ctx)
{
const char *path, *fs_path;
+ char *buf;
+ unsigned short len;
+ int n;
- path = nfs4_path(dentry, page, PAGE_SIZE);
- if (IS_ERR(path))
+ buf = kmalloc(4096, GFP_KERNEL);
+ path = nfs4_path(dentry, buf, 4096);
+ if (IS_ERR(path)) {
+ kfree(buf);
return PTR_ERR(path);
+ }
- fs_path = nfs4_pathname_string(&locations->fs_path, page2, PAGE_SIZE);
- if (IS_ERR(fs_path))
- return PTR_ERR(fs_path);
+ fs_path = nfs4_pathname_string(&locations->fs_path, &len);
- if (strncmp(path, fs_path, strlen(fs_path)) != 0) {
+ n = strncmp(path, fs_path, len);
+ kfree(buf);
+ kfree(fs_path);
+ if (n != 0) {
dprintk("%s: path %s does not begin with fsroot %s\n",
- __func__, path, fs_path);
+ __func__, path, ctx->nfs_server.export_path);
return -ENOENT;
}
@@ -236,55 +271,83 @@ nfs4_negotiate_security(struct rpc_clnt *clnt, struct inode *inode,
return new;
}
-static struct vfsmount *try_location(struct nfs_clone_mount *mountdata,
- char *page, char *page2,
- const struct nfs4_fs_location *location)
+static int try_location(struct fs_context *fc,
+ const struct nfs4_fs_location *location)
{
const size_t addr_bufsize = sizeof(struct sockaddr_storage);
- struct net *net = rpc_net_ns(NFS_SB(mountdata->sb)->client);
- struct vfsmount *mnt = ERR_PTR(-ENOENT);
- char *mnt_path;
- unsigned int maxbuflen;
- unsigned int s;
+ struct nfs_fs_context *ctx = nfs_fc2context(fc);
+ unsigned int len, s;
+ char *export_path, *source, *p;
+ int ret = -ENOENT;
+
+ /* Allocate a buffer big enough to hold any of the hostnames plus a
+ * terminating char and also a buffer big enough to hold the hostname
+ * plus a colon plus the path.
+ */
+ len = 0;
+ for (s = 0; s < location->nservers; s++) {
+ const struct nfs4_string *buf = &location->servers[s];
+ if (buf->len > len)
+ len = buf->len;
+ }
+
+ kfree(ctx->nfs_server.hostname);
+ ctx->nfs_server.hostname = kmalloc(len + 1, GFP_KERNEL);
+ if (!ctx->nfs_server.hostname)
+ return -ENOMEM;
- mnt_path = nfs4_pathname_string(&location->rootpath, page2, PAGE_SIZE);
- if (IS_ERR(mnt_path))
- return ERR_CAST(mnt_path);
- mountdata->mnt_path = mnt_path;
- maxbuflen = mnt_path - 1 - page2;
+ export_path = nfs4_pathname_string(&location->rootpath,
+ &ctx->nfs_server.export_path_len);
+ if (IS_ERR(export_path))
+ return PTR_ERR(export_path);
- mountdata->addr = kmalloc(addr_bufsize, GFP_KERNEL);
- if (mountdata->addr == NULL)
- return ERR_PTR(-ENOMEM);
+ ctx->nfs_server.export_path = export_path;
+ source = kmalloc(len + 1 + ctx->nfs_server.export_path_len + 1,
+ GFP_KERNEL);
+ if (!source)
+ return -ENOMEM;
+
+ kfree(fc->source);
+ fc->source = source;
+
+ ctx->clone_data.addr = kmalloc(addr_bufsize, GFP_KERNEL);
+ if (ctx->clone_data.addr == NULL)
+ return -ENOMEM;
for (s = 0; s < location->nservers; s++) {
const struct nfs4_string *buf = &location->servers[s];
- if (buf->len <= 0 || buf->len >= maxbuflen)
- continue;
-
if (memchr(buf->data, IPV6_SCOPE_DELIMITER, buf->len))
continue;
- mountdata->addrlen = nfs_parse_server_name(buf->data, buf->len,
- mountdata->addr, addr_bufsize, net);
- if (mountdata->addrlen == 0)
+ ctx->clone_data.addrlen =
+ nfs_parse_server_name(buf->data, buf->len,
+ ctx->clone_data.addr,
+ addr_bufsize,
+ fc->net_ns);
+ if (ctx->clone_data.addrlen == 0)
continue;
- memcpy(page2, buf->data, buf->len);
- page2[buf->len] = '\0';
- mountdata->hostname = page2;
+ rpc_set_port(ctx->clone_data.addr, NFS_PORT);
- snprintf(page, PAGE_SIZE, "%s:%s",
- mountdata->hostname,
- mountdata->mnt_path);
+ memcpy(ctx->nfs_server.hostname, buf->data, buf->len);
+ ctx->nfs_server.hostname[buf->len] = '\0';
+ ctx->clone_data.hostname = ctx->nfs_server.hostname;
- mnt = vfs_submount(mountdata->dentry, &nfs4_referral_fs_type, page, mountdata);
- if (!IS_ERR(mnt))
- break;
+ p = source;
+ memcpy(p, buf->data, buf->len);
+ p += buf->len;
+ *p++ = ':';
+ memcpy(p, ctx->nfs_server.export_path, ctx->nfs_server.export_path_len);
+ p += ctx->nfs_server.export_path_len;
+ *p = 0;
+
+ ret = nfs4_get_referral_tree(fc);
+ if (ret == 0)
+ return 0;
}
- kfree(mountdata->addr);
- return mnt;
+
+ return ret;
}
/**
@@ -293,38 +356,23 @@ static struct vfsmount *try_location(struct nfs_clone_mount *mountdata,
* @locations: array of NFSv4 server location information
*
*/
-static struct vfsmount *nfs_follow_referral(struct dentry *dentry,
- const struct nfs4_fs_locations *locations)
+static int nfs_follow_referral(struct fs_context *fc,
+ const struct nfs4_fs_locations *locations)
{
- struct vfsmount *mnt = ERR_PTR(-ENOENT);
- struct nfs_clone_mount mountdata = {
- .sb = dentry->d_sb,
- .dentry = dentry,
- .authflavor = NFS_SB(dentry->d_sb)->client->cl_auth->au_flavor,
- };
- char *page = NULL, *page2 = NULL;
+ struct nfs_fs_context *ctx = nfs_fc2context(fc);
int loc, error;
if (locations == NULL || locations->nlocations <= 0)
- goto out;
-
- dprintk("%s: referral at %pd2\n", __func__, dentry);
-
- page = (char *) __get_free_page(GFP_USER);
- if (!page)
- goto out;
+ return -ENOENT;
- page2 = (char *) __get_free_page(GFP_USER);
- if (!page2)
- goto out;
+ dprintk("%s: referral at %pd2\n", __func__, ctx->clone_data.dentry);
/* Ensure fs path is a prefix of current dentry path */
- error = nfs4_validate_fspath(dentry, locations, page, page2);
- if (error < 0) {
- mnt = ERR_PTR(error);
- goto out;
- }
+ error = nfs4_validate_fspath(ctx->clone_data.dentry, locations, ctx);
+ if (error < 0)
+ return error;
+ error = -ENOENT;
for (loc = 0; loc < locations->nlocations; loc++) {
const struct nfs4_fs_location *location = &locations->locations[loc];
@@ -332,15 +380,12 @@ static struct vfsmount *nfs_follow_referral(struct dentry *dentry,
location->rootpath.ncomponents == 0)
continue;
- mnt = try_location(&mountdata, page, page2, location);
- if (!IS_ERR(mnt))
- break;
+ error = try_location(fc, location);
+ if (error == 0)
+ return 0;
}
-out:
- free_page((unsigned long) page);
- free_page((unsigned long) page2);
- return mnt;
+ return error;
}
/*
@@ -348,71 +393,73 @@ static struct vfsmount *nfs_follow_referral(struct dentry *dentry,
* @dentry - dentry of referral
*
*/
-static struct vfsmount *nfs_do_refmount(struct rpc_clnt *client, struct dentry *dentry)
+static int nfs_do_refmount(struct fs_context *fc, struct rpc_clnt *client)
{
- struct vfsmount *mnt = ERR_PTR(-ENOMEM);
- struct dentry *parent;
+ struct nfs_fs_context *ctx = nfs_fc2context(fc);
+ struct dentry *dentry, *parent;
struct nfs4_fs_locations *fs_locations = NULL;
struct page *page;
- int err;
+ int err = -ENOMEM;
/* BUG_ON(IS_ROOT(dentry)); */
page = alloc_page(GFP_KERNEL);
- if (page == NULL)
- return mnt;
+ if (!page)
+ return -ENOMEM;
fs_locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL);
- if (fs_locations == NULL)
+ if (!fs_locations)
goto out_free;
/* Get locations */
- mnt = ERR_PTR(-ENOENT);
-
+ dentry = ctx->clone_data.dentry;
parent = dget_parent(dentry);
dprintk("%s: getting locations for %pd2\n",
__func__, dentry);
err = nfs4_proc_fs_locations(client, d_inode(parent), &dentry->d_name, fs_locations, page);
dput(parent);
- if (err != 0 ||
- fs_locations->nlocations <= 0 ||
+ if (err != 0)
+ goto out_free_2;
+
+ err = -ENOENT;
+ if (fs_locations->nlocations <= 0 ||
fs_locations->fs_path.ncomponents <= 0)
- goto out_free;
+ goto out_free_2;
- mnt = nfs_follow_referral(dentry, fs_locations);
+ err = nfs_follow_referral(fc, fs_locations);
+out_free_2:
+ kfree(fs_locations);
out_free:
__free_page(page);
- kfree(fs_locations);
- return mnt;
+ return err;
}
-struct vfsmount *nfs4_submount(struct nfs_server *server, struct dentry *dentry,
- struct nfs_fh *fh, struct nfs_fattr *fattr)
+int nfs4_submount(struct fs_context *fc, struct nfs_server *server)
{
- rpc_authflavor_t flavor = server->client->cl_auth->au_flavor;
+ struct nfs_fs_context *ctx = nfs_fc2context(fc);
+ struct dentry *dentry = ctx->clone_data.dentry;
struct dentry *parent = dget_parent(dentry);
struct inode *dir = d_inode(parent);
const struct qstr *name = &dentry->d_name;
struct rpc_clnt *client;
- struct vfsmount *mnt;
+ int ret;
/* Look it up again to get its attributes and sec flavor */
- client = nfs4_proc_lookup_mountpoint(dir, name, fh, fattr);
+ client = nfs4_proc_lookup_mountpoint(dir, name, ctx->mount_info.mntfh,
+ ctx->clone_data.fattr);
dput(parent);
if (IS_ERR(client))
- return ERR_CAST(client);
+ return PTR_ERR(client);
- if (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL) {
- mnt = nfs_do_refmount(client, dentry);
- goto out;
+ ctx->selected_flavor = client->cl_auth->au_flavor;
+ if (ctx->clone_data.fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL) {
+ ret = nfs_do_refmount(fc, client);
+ } else {
+ ret = nfs_do_submount(fc);
}
- if (client->cl_auth->au_flavor != flavor)
- flavor = client->cl_auth->au_flavor;
- mnt = nfs_do_submount(dentry, fh, fattr, flavor);
-out:
rpc_shutdown_client(client);
- return mnt;
+ return ret;
}
/*
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index caacf5e7f5e1..7fc56d528afb 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -9978,7 +9978,7 @@ const struct nfs_rpc_ops nfs_v4_clientops = {
.file_ops = &nfs4_file_operations,
.getroot = nfs4_proc_get_root,
.submount = nfs4_submount,
- .try_mount = nfs4_try_mount,
+ .try_get_tree = nfs4_try_get_tree,
.getattr = nfs4_proc_getattr,
.setattr = nfs4_proc_setattr,
.lookup = nfs4_proc_lookup,
diff --git a/fs/nfs/nfs4super.c b/fs/nfs/nfs4super.c
index ca9740137cfe..96edee546b8a 100644
--- a/fs/nfs/nfs4super.c
+++ b/fs/nfs/nfs4super.c
@@ -4,6 +4,7 @@
*/
#include <linux/init.h>
#include <linux/module.h>
+#include <linux/mount.h>
#include <linux/nfs4_mount.h>
#include <linux/nfs_fs.h>
#include "delegation.h"
@@ -18,16 +19,6 @@
static int nfs4_write_inode(struct inode *inode, struct writeback_control *wbc);
static void nfs4_evict_inode(struct inode *inode);
-static struct dentry *nfs4_referral_mount(struct file_system_type *fs_type,
- int flags, const char *dev_name, void *raw_data);
-
-struct file_system_type nfs4_referral_fs_type = {
- .owner = THIS_MODULE,
- .name = "nfs4",
- .mount = nfs4_referral_mount,
- .kill_sb = nfs_kill_super,
- .fs_flags = FS_RENAME_DOES_D_MOVE|FS_BINARY_MOUNTDATA,
-};
static const struct super_operations nfs4_sops = {
.alloc_inode = nfs_alloc_inode,
@@ -41,7 +32,6 @@ static const struct super_operations nfs4_sops = {
.show_devname = nfs_show_devname,
.show_path = nfs_show_path,
.show_stats = nfs_show_stats,
- .remount_fs = nfs_remount,
};
struct nfs_subversion nfs_v4 = {
@@ -147,102 +137,121 @@ static void nfs_referral_loop_unprotect(void)
kfree(p);
}
-static struct dentry *do_nfs4_mount(struct nfs_server *server, int flags,
- struct nfs_mount_info *info,
- const char *hostname,
- const char *export_path)
+static int do_nfs4_mount(struct nfs_server *server,
+ struct fs_context *fc,
+ const char *hostname,
+ const char *export_path)
{
+ struct nfs_fs_context *root_ctx;
+ struct fs_context *root_fc;
struct vfsmount *root_mnt;
struct dentry *dentry;
- char *root_devname;
- int err;
size_t len;
+ int ret;
+
+ struct fs_parameter param = {
+ .key = "source",
+ .type = fs_value_is_string,
+ .dirfd = -1,
+ };
if (IS_ERR(server))
- return ERR_CAST(server);
+ return PTR_ERR(server);
- len = strlen(hostname) + 5;
- root_devname = kmalloc(len, GFP_KERNEL);
- if (root_devname == NULL) {
+ root_fc = vfs_dup_fs_context(fc);
+ if (IS_ERR(root_fc)) {
nfs_free_server(server);
- return ERR_PTR(-ENOMEM);
+ return PTR_ERR(root_fc);
+ }
+ kfree(root_fc->source);
+ root_fc->source = NULL;
+
+ root_ctx = nfs_fc2context(root_fc);
+ root_ctx->internal = true;
+ root_ctx->mount_info.server = server;
+ /* We leave export_path unset as it's not used to find the root. */
+
+ len = strlen(hostname) + 5;
+ param.string = kmalloc(len, GFP_KERNEL);
+ if (param.string == NULL) {
+ put_fs_context(root_fc);
+ return -ENOMEM;
}
/* Does hostname needs to be enclosed in brackets? */
if (strchr(hostname, ':'))
- snprintf(root_devname, len, "[%s]:/", hostname);
+ param.size = snprintf(param.string, len, "[%s]:/", hostname);
else
- snprintf(root_devname, len, "%s:/", hostname);
- info->server = server;
- root_mnt = vfs_kern_mount(&nfs_prepared_fs_type, flags, root_devname, info);
- if (info->server)
- nfs_free_server(info->server);
- info->server = NULL;
- kfree(root_devname);
+ param.size = snprintf(param.string, len, "%s:/", hostname);
+ ret = vfs_parse_fs_param(root_fc, ¶m);
+ kfree(param.string);
+ if (ret < 0) {
+ put_fs_context(root_fc);
+ return ret;
+ }
+ root_mnt = fc_mount(root_fc);
+ put_fs_context(root_fc);
if (IS_ERR(root_mnt))
- return ERR_CAST(root_mnt);
+ return PTR_ERR(root_mnt);
- err = nfs_referral_loop_protect();
- if (err) {
+ ret = nfs_referral_loop_protect();
+ if (ret) {
mntput(root_mnt);
- return ERR_PTR(err);
+ return ret;
}
dentry = mount_subtree(root_mnt, export_path);
nfs_referral_loop_unprotect();
- return dentry;
+ if (IS_ERR(dentry))
+ return PTR_ERR(dentry);
+
+ fc->root = dentry;
+ return 0;
}
-struct dentry *nfs4_try_mount(int flags, const char *dev_name,
- struct nfs_mount_info *mount_info)
+int nfs4_try_get_tree(struct fs_context *fc)
{
- struct nfs_fs_context *ctx = mount_info->ctx;
- struct dentry *res;
-
- dfprintk(MOUNT, "--> nfs4_try_mount()\n");
+ struct nfs_fs_context *ctx = nfs_fc2context(fc);
+ int err;
- res = do_nfs4_mount(nfs4_create_server(mount_info),
- flags, mount_info,
- ctx->nfs_server.hostname,
- ctx->nfs_server.export_path);
+ dfprintk(MOUNT, "--> nfs4_try_get_tree()\n");
- dfprintk(MOUNT, "<-- nfs4_try_mount() = %d%s\n",
- PTR_ERR_OR_ZERO(res),
- IS_ERR(res) ? " [error]" : "");
- return res;
+ /* We create a mount for the server's root, walk to the requested
+ * location and then create another mount for that.
+ */
+ err= do_nfs4_mount(nfs4_create_server(&ctx->mount_info),
+ fc, ctx->nfs_server.hostname,
+ ctx->nfs_server.export_path);
+ if (err) {
+ dfprintk(MOUNT, "<-- nfs4_try_get_tree() = %d [error]\n", err);
+ } else {
+ dfprintk(MOUNT, "<-- nfs4_try_get_tree() = 0\n");
+ }
+ return err;
}
/*
* Create an NFS4 server record on referral traversal
*/
-static struct dentry *nfs4_referral_mount(struct file_system_type *fs_type,
- int flags, const char *dev_name, void *raw_data)
+int nfs4_get_referral_tree(struct fs_context *fc)
{
- struct nfs_clone_mount *data = raw_data;
- struct nfs_mount_info mount_info = {
- .cloned = data,
- .nfs_mod = &nfs_v4,
- };
- struct dentry *res;
+ struct nfs_fs_context *ctx = nfs_fc2context(fc);
+ int err;
dprintk("--> nfs4_referral_mount()\n");
- mount_info.mntfh = nfs_alloc_fhandle();
- if (!mount_info.mntfh)
- return ERR_PTR(-ENOMEM);
-
- res = do_nfs4_mount(nfs4_create_referral_server(mount_info.cloned,
- mount_info.mntfh),
- flags, &mount_info, data->hostname, data->mnt_path);
-
- dprintk("<-- nfs4_referral_mount() = %d%s\n",
- PTR_ERR_OR_ZERO(res),
- IS_ERR(res) ? " [error]" : "");
-
- nfs_free_fhandle(mount_info.mntfh);
- return res;
+ /* create a new volume representation */
+ err = do_nfs4_mount(nfs4_create_referral_server(&ctx->clone_data, ctx->mount_info.mntfh),
+ fc, ctx->nfs_server.hostname,
+ ctx->nfs_server.export_path);
+ if (err) {
+ dfprintk(MOUNT, "<-- nfs4_get_referral_tree() = %d [error]\n", err);
+ } else {
+ dfprintk(MOUNT, "<-- nfs4_get_referral_tree() = 0\n");
+ }
+ return err;
}
diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c
index 0f7288b94633..44a15523bf40 100644
--- a/fs/nfs/proc.c
+++ b/fs/nfs/proc.c
@@ -710,7 +710,7 @@ const struct nfs_rpc_ops nfs_v2_clientops = {
.file_ops = &nfs_file_operations,
.getroot = nfs_proc_get_root,
.submount = nfs_submount,
- .try_mount = nfs_try_mount,
+ .try_get_tree = nfs_try_get_tree,
.getattr = nfs_proc_getattr,
.setattr = nfs_proc_setattr,
.lookup = nfs_proc_lookup,
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index bb51618df142..6ff99da978a8 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -70,28 +70,6 @@
#define NFSDBG_FACILITY NFSDBG_VFS
-static struct dentry *nfs_prepared_mount(struct file_system_type *fs_type,
- int flags, const char *dev_name, void *raw_data);
-
-struct file_system_type nfs_fs_type = {
- .owner = THIS_MODULE,
- .name = "nfs",
- .mount = nfs_fs_mount,
- .kill_sb = nfs_kill_super,
- .fs_flags = FS_RENAME_DOES_D_MOVE|FS_BINARY_MOUNTDATA,
-};
-MODULE_ALIAS_FS("nfs");
-EXPORT_SYMBOL_GPL(nfs_fs_type);
-
-struct file_system_type nfs_prepared_fs_type = {
- .owner = THIS_MODULE,
- .name = "nfs",
- .mount = nfs_prepared_mount,
- .kill_sb = nfs_kill_super,
- .fs_flags = FS_RENAME_DOES_D_MOVE|FS_BINARY_MOUNTDATA,
-};
-EXPORT_SYMBOL_GPL(nfs_prepared_fs_type);
-
const struct super_operations nfs_sops = {
.alloc_inode = nfs_alloc_inode,
.free_inode = nfs_free_inode,
@@ -104,22 +82,10 @@ const struct super_operations nfs_sops = {
.show_devname = nfs_show_devname,
.show_path = nfs_show_path,
.show_stats = nfs_show_stats,
- .remount_fs = nfs_remount,
};
EXPORT_SYMBOL_GPL(nfs_sops);
#if IS_ENABLED(CONFIG_NFS_V4)
-struct file_system_type nfs4_fs_type = {
- .owner = THIS_MODULE,
- .name = "nfs4",
- .mount = nfs_fs_mount,
- .kill_sb = nfs_kill_super,
- .fs_flags = FS_RENAME_DOES_D_MOVE|FS_BINARY_MOUNTDATA,
-};
-MODULE_ALIAS_FS("nfs4");
-MODULE_ALIAS("nfs4");
-EXPORT_SYMBOL_GPL(nfs4_fs_type);
-
static int __init register_nfs4_fs(void)
{
return register_filesystem(&nfs4_fs_type);
@@ -911,20 +877,19 @@ static struct nfs_server *nfs_try_mount_request(struct nfs_mount_info *mount_inf
return nfs_mod->rpc_ops->create_server(mount_info);
}
-static struct dentry *nfs_fs_mount_common(int, const char *, struct nfs_mount_info *);
-
-struct dentry *nfs_try_mount(int flags, const char *dev_name,
- struct nfs_mount_info *mount_info)
+int nfs_try_get_tree(struct fs_context *fc)
{
- struct nfs_subversion *nfs_mod = mount_info->nfs_mod;
- if (mount_info->ctx->need_mount)
- mount_info->server = nfs_try_mount_request(mount_info);
+ struct nfs_fs_context *ctx = nfs_fc2context(fc);
+
+ if (ctx->need_mount)
+ ctx->mount_info.server = nfs_try_mount_request(&ctx->mount_info);
else
- mount_info->server = nfs_mod->rpc_ops->create_server(mount_info);
+ ctx->mount_info.server = ctx->mount_info.nfs_mod->rpc_ops->create_server(&ctx->mount_info);
- return nfs_fs_mount_common(flags, dev_name, mount_info);
+ return nfs_get_tree_common(fc);
}
-EXPORT_SYMBOL_GPL(nfs_try_mount);
+EXPORT_SYMBOL_GPL(nfs_try_get_tree);
+
#define NFS_REMOUNT_CMP_FLAGMASK ~(NFS_MOUNT_INTR \
| NFS_MOUNT_SECURE \
@@ -965,15 +930,11 @@ nfs_compare_remount_data(struct nfs_server *nfss,
return 0;
}
-int
-nfs_remount(struct super_block *sb, int *flags, char *raw_data)
+int nfs_reconfigure(struct fs_context *fc)
{
- int error;
+ struct nfs_fs_context *ctx = nfs_fc2context(fc);
+ struct super_block *sb = fc->root->d_sb;
struct nfs_server *nfss = sb->s_fs_info;
- struct nfs_fs_context *ctx;
- struct nfs_mount_data *options = (struct nfs_mount_data *)raw_data;
- struct nfs4_mount_data *options4 = (struct nfs4_mount_data *)raw_data;
- u32 nfsvers = nfss->nfs_client->rpc_ops->version;
sync_filesystem(sb);
@@ -983,57 +944,24 @@ nfs_remount(struct super_block *sb, int *flags, char *raw_data)
* ones were explicitly specified. Fall back to legacy behavior and
* just return success.
*/
- if ((nfsvers == 4 && (!options4 || options4->version == 1)) ||
- (nfsvers <= 3 && (!options || (options->version >= 1 &&
- options->version <= 6))))
+ if (ctx->skip_reconfig_option_check)
return 0;
- ctx = nfs_alloc_parsed_mount_data();
- if (ctx == NULL)
- return -ENOMEM;
-
- /* fill out struct with values from existing mount */
- ctx->flags = nfss->flags;
- ctx->rsize = nfss->rsize;
- ctx->wsize = nfss->wsize;
- ctx->retrans = nfss->client->cl_timeout->to_retries;
- ctx->selected_flavor = nfss->client->cl_auth->au_flavor;
- ctx->acregmin = nfss->acregmin / HZ;
- ctx->acregmax = nfss->acregmax / HZ;
- ctx->acdirmin = nfss->acdirmin / HZ;
- ctx->acdirmax = nfss->acdirmax / HZ;
- ctx->timeo = 10U * nfss->client->cl_timeout->to_initval / HZ;
- ctx->nfs_server.port = nfss->port;
- ctx->nfs_server.addrlen = nfss->nfs_client->cl_addrlen;
- ctx->version = nfsvers;
- ctx->minorversion = nfss->nfs_client->cl_minorversion;
- ctx->net = current->nsproxy->net_ns;
- memcpy(&ctx->nfs_server.address, &nfss->nfs_client->cl_addr,
- ctx->nfs_server.addrlen);
-
- /* overwrite those values with any that were specified */
- error = -EINVAL;
- if (!nfs_parse_mount_options((char *)options, ctx))
- goto out;
-
/*
* noac is a special case. It implies -o sync, but that's not
- * necessarily reflected in the mtab options. do_remount_sb
+ * necessarily reflected in the mtab options. reconfigure_super
* will clear SB_SYNCHRONOUS if -o sync wasn't specified in the
* remount options, so we have to explicitly reset it.
*/
- if (ctx->flags & NFS_MOUNT_NOAC)
- *flags |= SB_SYNCHRONOUS;
+ if (ctx->flags & NFS_MOUNT_NOAC) {
+ fc->sb_flags |= SB_SYNCHRONOUS;
+ fc->sb_flags_mask |= SB_SYNCHRONOUS;
+ }
/* compare new mount options with old ones */
- error = nfs_compare_remount_data(nfss, ctx);
- if (!error)
- error = security_sb_remount(sb, ctx->lsm_opts);
-out:
- nfs_free_parsed_mount_data(ctx);
- return error;
+ return nfs_compare_remount_data(nfss, ctx);
}
-EXPORT_SYMBOL_GPL(nfs_remount);
+EXPORT_SYMBOL_GPL(nfs_reconfigure);
/*
* Finish setting up an NFS superblock
@@ -1112,19 +1040,11 @@ static int nfs_compare_mount_options(const struct super_block *s, const struct n
return 0;
}
-struct nfs_sb_mountdata {
- struct nfs_server *server;
- int mntflags;
-};
-
-static int nfs_set_super(struct super_block *s, void *data)
+static int nfs_set_super(struct super_block *s, struct fs_context *fc)
{
- struct nfs_sb_mountdata *sb_mntdata = data;
- struct nfs_server *server = sb_mntdata->server;
+ struct nfs_server *server = fc->s_fs_info;
int ret;
- s->s_flags = sb_mntdata->mntflags;
- s->s_fs_info = server;
s->s_d_op = server->nfs_client->rpc_ops->dentry_ops;
ret = set_anon_super(s, server);
if (ret == 0)
@@ -1189,11 +1109,9 @@ static int nfs_compare_userns(const struct nfs_server *old,
return 1;
}
-static int nfs_compare_super(struct super_block *sb, void *data)
+static int nfs_compare_super(struct super_block *sb, struct fs_context *fc)
{
- struct nfs_sb_mountdata *sb_mntdata = data;
- struct nfs_server *server = sb_mntdata->server, *old = NFS_SB(sb);
- int mntflags = sb_mntdata->mntflags;
+ struct nfs_server *server = fc->s_fs_info, *old = NFS_SB(sb);
if (!nfs_compare_super_address(old, server))
return 0;
@@ -1204,13 +1122,12 @@ static int nfs_compare_super(struct super_block *sb, void *data)
return 0;
if (!nfs_compare_userns(old, server))
return 0;
- return nfs_compare_mount_options(sb, server, mntflags);
+ return nfs_compare_mount_options(sb, server, fc->sb_flags);
}
#ifdef CONFIG_NFS_FSCACHE
static void nfs_get_cache_cookie(struct super_block *sb,
- struct nfs_fs_context *ctx,
- struct nfs_clone_mount *cloned)
+ struct nfs_fs_context *ctx)
{
struct nfs_server *nfss = NFS_SB(sb);
char *uniq = NULL;
@@ -1219,30 +1136,32 @@ static void nfs_get_cache_cookie(struct super_block *sb,
nfss->fscache_key = NULL;
nfss->fscache = NULL;
- if (ctx) {
+ if (!ctx)
+ return;
+
+ if (ctx->clone_data.sb) {
+ struct nfs_server *mnt_s = NFS_SB(ctx->clone_data.sb);
+ if (!(mnt_s->options & NFS_OPTION_FSCACHE))
+ return;
+ if (mnt_s->fscache_key) {
+ uniq = mnt_s->fscache_key->key.uniquifier;
+ ulen = mnt_s->fscache_key->key.uniq_len;
+ }
+ } else {
if (!(ctx->options & NFS_OPTION_FSCACHE))
return;
if (ctx->fscache_uniq) {
uniq = ctx->fscache_uniq;
ulen = strlen(ctx->fscache_uniq);
}
- } else if (cloned) {
- struct nfs_server *mnt_s = NFS_SB(cloned->sb);
- if (!(mnt_s->options & NFS_OPTION_FSCACHE))
- return;
- if (mnt_s->fscache_key) {
- uniq = mnt_s->fscache_key->key.uniquifier;
- ulen = mnt_s->fscache_key->key.uniq_len;
- };
- } else
return;
+ }
nfs_fscache_get_super_cookie(sb, uniq, ulen);
}
#else
static void nfs_get_cache_cookie(struct super_block *sb,
- struct nfs_fs_context *parsed,
- struct nfs_clone_mount *cloned)
+ struct nfs_fs_context *ctx)
{
}
#endif
@@ -1254,40 +1173,41 @@ static void nfs_set_readahead(struct backing_dev_info *bdi,
bdi->io_pages = iomax_pages;
}
-static struct dentry *nfs_fs_mount_common(int flags, const char *dev_name,
- struct nfs_mount_info *mount_info)
+int nfs_get_tree_common(struct fs_context *fc)
{
+ struct nfs_fs_context *ctx = nfs_fc2context(fc);
struct super_block *s;
struct dentry *mntroot = ERR_PTR(-ENOMEM);
- int (*compare_super)(struct super_block *, void *) = nfs_compare_super;
- struct nfs_server *server = mount_info->server;
+ int (*compare_super)(struct super_block *, struct fs_context *) = nfs_compare_super;
+ struct nfs_server *server = ctx->mount_info.server;
unsigned long kflags = 0, kflags_out = 0;
- struct nfs_sb_mountdata sb_mntdata = {
- .mntflags = flags,
- .server = server,
- };
int error;
- mount_info->server = NULL;
+ ctx->mount_info.server = NULL;
if (IS_ERR(server))
- return ERR_CAST(server);
+ return PTR_ERR(server);
if (server->flags & NFS_MOUNT_UNSHARED)
compare_super = NULL;
/* -o noac implies -o sync */
if (server->flags & NFS_MOUNT_NOAC)
- sb_mntdata.mntflags |= SB_SYNCHRONOUS;
+ fc->sb_flags |= SB_SYNCHRONOUS;
+
+ if (ctx->clone_data.sb)
+ if (ctx->clone_data.sb->s_flags & SB_SYNCHRONOUS)
+ fc->sb_flags |= SB_SYNCHRONOUS;
- if (mount_info->cloned != NULL && mount_info->cloned->sb != NULL)
- if (mount_info->cloned->sb->s_flags & SB_SYNCHRONOUS)
- sb_mntdata.mntflags |= SB_SYNCHRONOUS;
+ if (server->caps & NFS_CAP_SECURITY_LABEL)
+ fc->lsm_flags |= SECURITY_LSM_NATIVE_LABELS;
/* Get a superblock - note that we may end up sharing one that already exists */
- s = sget(mount_info->nfs_mod->nfs_fs, compare_super, nfs_set_super,
- flags, &sb_mntdata);
+ fc->s_fs_info = server;
+ s = sget_fc(fc, compare_super, nfs_set_super);
+ fc->s_fs_info = NULL;
if (IS_ERR(s)) {
- mntroot = ERR_CAST(s);
+ error = PTR_ERR(s);
+ dfprintk(MOUNT, "NFS: Couldn't get superblock\n");
goto out_err_nosb;
}
@@ -1297,44 +1217,43 @@ static struct dentry *nfs_fs_mount_common(int flags, const char *dev_name,
} else {
error = super_setup_bdi_name(s, "%u:%u", MAJOR(server->s_dev),
MINOR(server->s_dev));
- if (error) {
- mntroot = ERR_PTR(error);
+ if (error)
goto error_splat_super;
- }
nfs_set_readahead(s->s_bdi, server->rpages);
server->super = s;
}
if (!s->s_root) {
- unsigned bsize = mount_info->inherited_bsize;
+ unsigned bsize = ctx->mount_info.inherited_bsize;
/* initial superblock/root creation */
- nfs_fill_super(s, mount_info);
+ nfs_fill_super(s, &ctx->mount_info);
if (bsize) {
s->s_blocksize_bits = bsize;
s->s_blocksize = 1U << bsize;
}
- nfs_get_cache_cookie(s, mount_info->ctx, mount_info->cloned);
- if (!(server->flags & NFS_MOUNT_UNSHARED))
- s->s_iflags |= SB_I_MULTIROOT;
+ nfs_get_cache_cookie(s, ctx);
}
- mntroot = nfs_get_root(s, mount_info->mntfh, dev_name);
- if (IS_ERR(mntroot))
+ mntroot = nfs_get_root(s, ctx->mount_info.mntfh, fc->source);
+ if (IS_ERR(mntroot)) {
+ error = PTR_ERR(mntroot);
+ dfprintk(MOUNT, "NFS: Couldn't get root dentry\n");
goto error_splat_super;
-
+ }
+ fc->root = mntroot;
if (NFS_SB(s)->caps & NFS_CAP_SECURITY_LABEL)
kflags |= SECURITY_LSM_NATIVE_LABELS;
- if (mount_info->cloned) {
- if (d_inode(mntroot)->i_fop != &nfs_dir_operations) {
+ if (ctx->clone_data.sb) {
+ if (d_inode(fc->root)->i_fop != &nfs_dir_operations) {
error = -ESTALE;
goto error_splat_root;
}
/* clone any lsm security options from the parent to the new sb */
- error = security_sb_clone_mnt_opts(mount_info->cloned->sb, s, kflags,
+ error = security_sb_clone_mnt_opts(ctx->clone_data.sb, s, kflags,
&kflags_out);
} else {
- error = security_sb_set_mnt_opts(s, mount_info->ctx->lsm_opts,
+ error = security_sb_set_mnt_opts(s, fc->security,
kflags, &kflags_out);
}
if (error)
@@ -1342,67 +1261,25 @@ static struct dentry *nfs_fs_mount_common(int flags, const char *dev_name,
if (NFS_SB(s)->caps & NFS_CAP_SECURITY_LABEL &&
!(kflags_out & SECURITY_LSM_NATIVE_LABELS))
NFS_SB(s)->caps &= ~NFS_CAP_SECURITY_LABEL;
- if (error)
- goto error_splat_root;
s->s_flags |= SB_ACTIVE;
+ error = 0;
out:
- return mntroot;
+ return error;
out_err_nosb:
nfs_free_server(server);
goto out;
error_splat_root:
- dput(mntroot);
- mntroot = ERR_PTR(error);
+ dput(fc->root);
+ fc->root = NULL;
error_splat_super:
deactivate_locked_super(s);
goto out;
}
-struct dentry *nfs_fs_mount(struct file_system_type *fs_type,
- int flags, const char *dev_name, void *raw_data)
-{
- struct nfs_mount_info mount_info = {
- };
- struct dentry *mntroot = ERR_PTR(-ENOMEM);
- struct nfs_subversion *nfs_mod;
- int error;
-
- mount_info.ctx = nfs_alloc_parsed_mount_data();
- mount_info.mntfh = nfs_alloc_fhandle();
- if (mount_info.ctx == NULL || mount_info.mntfh == NULL)
- goto out;
-
- /* Validate the mount data */
- error = nfs_validate_mount_data(fs_type, raw_data, mount_info.ctx, mount_info.mntfh, dev_name);
- if (error == NFS_TEXT_DATA)
- error = nfs_validate_text_mount_data(raw_data,
- mount_info.ctx, dev_name);
- if (error < 0) {
- mntroot = ERR_PTR(error);
- goto out;
- }
-
- nfs_mod = get_nfs_version(mount_info.ctx->version);
- if (IS_ERR(nfs_mod)) {
- mntroot = ERR_CAST(nfs_mod);
- goto out;
- }
- mount_info.nfs_mod = nfs_mod;
-
- mntroot = nfs_mod->rpc_ops->try_mount(flags, dev_name, &mount_info);
-
- put_nfs_version(nfs_mod);
-out:
- nfs_free_parsed_mount_data(mount_info.ctx);
- nfs_free_fhandle(mount_info.mntfh);
- return mntroot;
-}
-EXPORT_SYMBOL_GPL(nfs_fs_mount);
-
/*
* Destroy an NFS2/3 superblock
*/
@@ -1420,17 +1297,6 @@ void nfs_kill_super(struct super_block *s)
}
EXPORT_SYMBOL_GPL(nfs_kill_super);
-/*
- * Internal use only: mount_info is already set up by caller.
- * Used for mountpoint crossings and for nfs4 root.
- */
-static struct dentry *
-nfs_prepared_mount(struct file_system_type *fs_type, int flags,
- const char *dev_name, void *raw_data)
-{
- return nfs_fs_mount_common(flags, dev_name, raw_data);
-}
-
#if IS_ENABLED(CONFIG_NFS_V4)
/*
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index 82bdb91da2ae..3de843888bc0 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -1622,6 +1622,7 @@ struct nfs_subversion;
struct nfs_mount_info;
struct nfs_client_initdata;
struct nfs_pageio_descriptor;
+struct fs_context;
/*
* RPC procedure vector for NFSv2/NFSv3 demuxing
@@ -1636,9 +1637,8 @@ struct nfs_rpc_ops {
int (*getroot) (struct nfs_server *, struct nfs_fh *,
struct nfs_fsinfo *);
- struct vfsmount *(*submount) (struct nfs_server *, struct dentry *,
- struct nfs_fh *, struct nfs_fattr *);
- struct dentry *(*try_mount) (int, const char *, struct nfs_mount_info *);
+ int (*submount) (struct fs_context *, struct nfs_server *);
+ int (*try_get_tree) (struct fs_context *);
int (*getattr) (struct nfs_server *, struct nfs_fh *,
struct nfs_fattr *, struct nfs4_label *,
struct inode *);
--
2.17.2
Split out from commit "NFS: Add fs_context support."
This patch adds additional refactoring for the conversion of NFS to use
fs_context, namely:
(*) Merge nfs_mount_info and nfs_clone_mount into nfs_fs_context.
nfs_clone_mount has had several fields removed, and nfs_mount_info
has been removed altogether.
(*) Various functions now take an fs_context as an argument instead
of nfs_mount_info, nfs_fs_context, etc.
Signed-off-by: Scott Mayhew <[email protected]>
---
fs/nfs/client.c | 22 +++---
fs/nfs/fs_context.c | 155 +++++++++++++++-------------------------
fs/nfs/fscache.c | 2 +-
fs/nfs/getroot.c | 70 +++++++++---------
fs/nfs/internal.h | 53 +++++---------
fs/nfs/namespace.c | 14 ++--
fs/nfs/nfs3_fs.h | 2 +-
fs/nfs/nfs3client.c | 5 +-
fs/nfs/nfs4client.c | 62 ++++++++--------
fs/nfs/nfs4namespace.c | 24 +++----
fs/nfs/nfs4super.c | 19 +++--
fs/nfs/super.c | 48 ++++++-------
include/linux/nfs_xdr.h | 2 +-
13 files changed, 204 insertions(+), 274 deletions(-)
diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index 511d1d629786..a26e7d1d74bc 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -648,17 +648,17 @@ EXPORT_SYMBOL_GPL(nfs_init_client);
* Create a version 2 or 3 client
*/
static int nfs_init_server(struct nfs_server *server,
- const struct nfs_fs_context *ctx,
- struct nfs_subversion *nfs_mod)
+ const struct fs_context *fc)
{
+ const struct nfs_fs_context *ctx = nfs_fc2context(fc);
struct rpc_timeout timeparms;
struct nfs_client_initdata cl_init = {
.hostname = ctx->nfs_server.hostname,
.addr = (const struct sockaddr *)&ctx->nfs_server.address,
.addrlen = ctx->nfs_server.addrlen,
- .nfs_mod = nfs_mod,
+ .nfs_mod = ctx->nfs_mod,
.proto = ctx->nfs_server.protocol,
- .net = ctx->net,
+ .net = fc->net_ns,
.timeparms = &timeparms,
.cred = server->cred,
.nconnect = ctx->nfs_server.nconnect,
@@ -940,10 +940,10 @@ EXPORT_SYMBOL_GPL(nfs_free_server);
* Create a version 2 or 3 volume record
* - keyed on server and FSID
*/
-struct nfs_server *nfs_create_server(struct nfs_mount_info *mount_info)
+struct nfs_server *nfs_create_server(struct fs_context *fc)
{
+ struct nfs_fs_context *ctx = nfs_fc2context(fc);
struct nfs_server *server;
- struct nfs_subversion *nfs_mod = mount_info->nfs_mod;
struct nfs_fattr *fattr;
int error;
@@ -959,18 +959,18 @@ struct nfs_server *nfs_create_server(struct nfs_mount_info *mount_info)
goto error;
/* Get a client representation */
- error = nfs_init_server(server, mount_info->ctx, nfs_mod);
+ error = nfs_init_server(server, fc);
if (error < 0)
goto error;
/* Probe the root fh to retrieve its FSID */
- error = nfs_probe_fsinfo(server, mount_info->mntfh, fattr);
+ error = nfs_probe_fsinfo(server, ctx->mntfh, fattr);
if (error < 0)
goto error;
if (server->nfs_client->rpc_ops->version == 3) {
if (server->namelen == 0 || server->namelen > NFS3_MAXNAMLEN)
server->namelen = NFS3_MAXNAMLEN;
- if (!(mount_info->ctx->flags & NFS_MOUNT_NORDIRPLUS))
+ if (!(ctx->flags & NFS_MOUNT_NORDIRPLUS))
server->caps |= NFS_CAP_READDIRPLUS;
} else {
if (server->namelen == 0 || server->namelen > NFS2_MAXNAMLEN)
@@ -978,8 +978,8 @@ struct nfs_server *nfs_create_server(struct nfs_mount_info *mount_info)
}
if (!(fattr->valid & NFS_ATTR_FATTR)) {
- error = nfs_mod->rpc_ops->getattr(server, mount_info->mntfh,
- fattr, NULL, NULL);
+ error = ctx->nfs_mod->rpc_ops->getattr(server, ctx->mntfh,
+ fattr, NULL, NULL);
if (error < 0) {
dprintk("nfs_create_server: getattr error = %d\n", -error);
goto error;
diff --git a/fs/nfs/fs_context.c b/fs/nfs/fs_context.c
index ac1a8d7d7393..e472334b978d 100644
--- a/fs/nfs/fs_context.c
+++ b/fs/nfs/fs_context.c
@@ -241,43 +241,6 @@ static const struct constant_table nfs_secflavor_tokens[] = {
{ "sys", Opt_sec_sys },
};
-struct nfs_fs_context *nfs_alloc_parsed_mount_data(void)
-{
- struct nfs_fs_context *ctx;
-
- ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
- if (ctx) {
- ctx->timeo = NFS_UNSPEC_TIMEO;
- ctx->retrans = NFS_UNSPEC_RETRANS;
- ctx->acregmin = NFS_DEF_ACREGMIN;
- ctx->acregmax = NFS_DEF_ACREGMAX;
- ctx->acdirmin = NFS_DEF_ACDIRMIN;
- ctx->acdirmax = NFS_DEF_ACDIRMAX;
- ctx->mount_server.port = NFS_UNSPEC_PORT;
- ctx->nfs_server.port = NFS_UNSPEC_PORT;
- ctx->nfs_server.protocol = XPRT_TRANSPORT_TCP;
- ctx->selected_flavor = RPC_AUTH_MAXFLAVOR;
- ctx->minorversion = 0;
- ctx->need_mount = true;
- ctx->net = current->nsproxy->net_ns;
- ctx->lsm_opts = NULL;
- }
- return ctx;
-}
-
-void nfs_free_parsed_mount_data(struct nfs_fs_context *ctx)
-{
- if (ctx) {
- kfree(ctx->client_address);
- kfree(ctx->mount_server.hostname);
- kfree(ctx->nfs_server.export_path);
- kfree(ctx->nfs_server.hostname);
- kfree(ctx->fscache_uniq);
- security_free_mnt_opts(&ctx->lsm_opts);
- kfree(ctx);
- }
-}
-
/*
* Sanity-check a server address provided by the mount command.
*
@@ -342,7 +305,7 @@ static void nfs_set_mount_transport_protocol(struct nfs_fs_context *ctx)
* Add 'flavor' to 'auth_info' if not already present.
* Returns true if 'flavor' ends up in the list, false otherwise
*/
-static int nfs_auth_info_add(struct nfs_fs_context *ctx,
+static int nfs_auth_info_add(struct fs_context *fc,
struct nfs_auth_info *auth_info,
rpc_authflavor_t flavor)
{
@@ -367,9 +330,10 @@ static int nfs_auth_info_add(struct nfs_fs_context *ctx,
/*
* Parse the value of the 'sec=' option.
*/
-static int nfs_parse_security_flavors(struct nfs_fs_context *ctx,
+static int nfs_parse_security_flavors(struct fs_context *fc,
struct fs_parameter *param)
{
+ struct nfs_fs_context *ctx = nfs_fc2context(fc);
rpc_authflavor_t pseudoflavor;
char *string = param->string, *p;
int ret;
@@ -419,7 +383,7 @@ static int nfs_parse_security_flavors(struct nfs_fs_context *ctx,
return -EINVAL;
}
- ret = nfs_auth_info_add(ctx, &ctx->auth_info, pseudoflavor);
+ ret = nfs_auth_info_add(fc, &ctx->auth_info, pseudoflavor);
if (ret < 0)
return ret;
}
@@ -427,9 +391,11 @@ static int nfs_parse_security_flavors(struct nfs_fs_context *ctx,
return 0;
}
-static int nfs_parse_version_string(struct nfs_fs_context *ctx,
+static int nfs_parse_version_string(struct fs_context *fc,
const char *string)
{
+ struct nfs_fs_context *ctx = nfs_fc2context(fc);
+
ctx->flags &= ~NFS_MOUNT_VER3;
switch (lookup_constant(nfs_vers_tokens, string, -1)) {
case Opt_vers_2:
@@ -656,17 +622,17 @@ static int nfs_fs_context_parse_param(struct fs_context *fc,
* options that take text values
*/
case Opt_v:
- ret = nfs_parse_version_string(ctx, param->key + 1);
+ ret = nfs_parse_version_string(fc, param->key + 1);
if (ret < 0)
return ret;
break;
case Opt_vers:
- ret = nfs_parse_version_string(ctx, param->string);
+ ret = nfs_parse_version_string(fc, param->string);
if (ret < 0)
return ret;
break;
case Opt_sec:
- ret = nfs_parse_security_flavors(ctx, param);
+ ret = nfs_parse_security_flavors(fc, param);
if (ret < 0)
return ret;
break;
@@ -729,7 +695,7 @@ static int nfs_fs_context_parse_param(struct fs_context *fc,
break;
case Opt_addr:
- len = rpc_pton(ctx->net, param->string, param->size,
+ len = rpc_pton(fc->net_ns, param->string, param->size,
&ctx->nfs_server.address,
sizeof(ctx->nfs_server._address));
if (len == 0)
@@ -747,7 +713,7 @@ static int nfs_fs_context_parse_param(struct fs_context *fc,
param->string = NULL;
break;
case Opt_mountaddr:
- len = rpc_pton(ctx->net, param->string, param->size,
+ len = rpc_pton(fc->net_ns, param->string, param->size,
&ctx->mount_server.address,
sizeof(ctx->mount_server._address));
if (len == 0)
@@ -819,7 +785,7 @@ static int nfs_fs_context_parse_param(struct fs_context *fc,
}
/*
- * Split "dev_name" into "hostname:export_path".
+ * Split fc->source into "hostname:export_path".
*
* The leftmost colon demarks the split between the server's hostname
* and the export path. If the hostname starts with a left square
@@ -827,12 +793,13 @@ static int nfs_fs_context_parse_param(struct fs_context *fc,
*
* Note: caller frees hostname and export path, even on error.
*/
-static int nfs_parse_devname(struct nfs_fs_context *ctx,
- const char *dev_name,
- size_t maxnamlen, size_t maxpathlen)
+static int nfs_parse_source(struct fs_context *fc,
+ size_t maxnamlen, size_t maxpathlen)
{
+ struct nfs_fs_context *ctx = nfs_fc2context(fc);
+ const char *dev_name = fc->source;
size_t len;
- char *end;
+ const char *end;
if (unlikely(!dev_name || !*dev_name)) {
dfprintk(MOUNT, "NFS: device name not specified\n");
@@ -848,7 +815,7 @@ static int nfs_parse_devname(struct nfs_fs_context *ctx,
len = end - dev_name;
end++;
} else {
- char *comma;
+ const char *comma;
end = strchr(dev_name, ':');
if (end == NULL)
@@ -856,8 +823,8 @@ static int nfs_parse_devname(struct nfs_fs_context *ctx,
len = end - dev_name;
/* kill possible hostname list: not supported */
- comma = strchr(dev_name, ',');
- if (comma != NULL && comma < end)
+ comma = memchr(dev_name, ',', len);
+ if (comma)
len = comma - dev_name;
}
@@ -920,7 +887,7 @@ static int nfs23_parse_monolithic(struct fs_context *fc,
struct nfs_mount_data *data)
{
struct nfs_fs_context *ctx = nfs_fc2context(fc);
- struct nfs_fh *mntfh = ctx->mount_info.mntfh;
+ struct nfs_fh *mntfh = ctx->mntfh;
struct sockaddr *sap = (struct sockaddr *)&ctx->nfs_server.address;
int extra_flags = NFS_MOUNT_LEGACY_INTERFACE;
@@ -1009,6 +976,7 @@ static int nfs23_parse_monolithic(struct fs_context *fc,
else
ctx->flags |= (NFS_MOUNT_LOCAL_FLOCK|
NFS_MOUNT_LOCAL_FCNTL);
+
/*
* The legacy version 6 binary mount data from userspace has a
* field used only to transport selinux information into the
@@ -1073,12 +1041,6 @@ static int nfs23_parse_monolithic(struct fs_context *fc,
}
#if IS_ENABLED(CONFIG_NFS_V4)
-static void nfs4_validate_mount_flags(struct nfs_fs_context *ctx)
-{
- ctx->flags &= ~(NFS_MOUNT_NONLM|NFS_MOUNT_NOACL|NFS_MOUNT_VER3|
- NFS_MOUNT_LOCAL_FLOCK|NFS_MOUNT_LOCAL_FCNTL);
-}
-
/*
* Validate NFSv4 mount options
*/
@@ -1251,20 +1213,22 @@ static int nfs_fs_context_validate(struct fs_context *fc)
goto out_no_address;
if (ctx->version == 4) {
-#if IS_ENABLED(CONFIG_NFS_V4)
- if (ctx->nfs_server.protocol == XPRT_TRANSPORT_RDMA)
- port = NFS_RDMA_PORT;
- else
- port = NFS_PORT;
- max_namelen = NFS4_MAXNAMLEN;
- max_pathlen = NFS4_MAXPATHLEN;
- nfs_validate_transport_protocol(ctx);
- if (ctx->nfs_server.protocol == XPRT_TRANSPORT_UDP)
- goto out_invalid_transport_udp;
- nfs4_validate_mount_flags(ctx);
-#else
- goto out_v4_not_compiled;
-#endif /* CONFIG_NFS_V4 */
+ if (IS_ENABLED(CONFIG_NFS_V4)) {
+ if (ctx->nfs_server.protocol == XPRT_TRANSPORT_RDMA)
+ port = NFS_RDMA_PORT;
+ else
+ port = NFS_PORT;
+ max_namelen = NFS4_MAXNAMLEN;
+ max_pathlen = NFS4_MAXPATHLEN;
+ nfs_validate_transport_protocol(ctx);
+ if (ctx->nfs_server.protocol == XPRT_TRANSPORT_UDP)
+ goto out_invalid_transport_udp;
+ ctx->flags &= ~(NFS_MOUNT_NONLM | NFS_MOUNT_NOACL |
+ NFS_MOUNT_VER3 | NFS_MOUNT_LOCAL_FLOCK |
+ NFS_MOUNT_LOCAL_FCNTL);
+ } else {
+ goto out_v4_not_compiled;
+ }
} else {
nfs_set_mount_transport_protocol(ctx);
if (ctx->nfs_server.protocol == XPRT_TRANSPORT_RDMA)
@@ -1273,33 +1237,30 @@ static int nfs_fs_context_validate(struct fs_context *fc)
nfs_set_port(sap, &ctx->nfs_server.port, port);
- ret = nfs_parse_devname(ctx, fc->source, max_namelen, max_pathlen);
+ ret = nfs_parse_source(fc, max_namelen, max_pathlen);
if (ret < 0)
return ret;
/* Load the NFS protocol module if we haven't done so yet */
- if (!ctx->mount_info.nfs_mod) {
+ if (!ctx->nfs_mod) {
nfs_mod = get_nfs_version(ctx->version);
if (IS_ERR(nfs_mod)) {
ret = PTR_ERR(nfs_mod);
goto out_version_unavailable;
}
- ctx->mount_info.nfs_mod = nfs_mod;
+ ctx->nfs_mod = nfs_mod;
}
return 0;
out_no_device_name:
dfprintk(MOUNT, "NFS: Device name not specified\n");
return -EINVAL;
-#if !IS_ENABLED(CONFIG_NFS_V4)
out_v4_not_compiled:
dfprintk(MOUNT, "NFS: NFSv4 is not compiled into kernel\n");
return -EPROTONOSUPPORT;
-#else
out_invalid_transport_udp:
dfprintk(MOUNT, "NFSv4: Unsupported transport protocol udp\n");
return -EINVAL;
-#endif /* !CONFIG_NFS_V4 */
out_no_address:
dfprintk(MOUNT, "NFS: mount program didn't pass remote address\n");
return -EINVAL;
@@ -1332,7 +1293,7 @@ static int nfs_get_tree(struct fs_context *fc)
if (err)
return err;
if (!ctx->internal)
- return ctx->mount_info.nfs_mod->rpc_ops->try_get_tree(fc);
+ return ctx->nfs_mod->rpc_ops->try_get_tree(fc);
else
return nfs_get_tree_common(fc);
}
@@ -1351,20 +1312,19 @@ static int nfs_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc)
if (!ctx)
return -ENOMEM;
- ctx->mount_info.mntfh = nfs_alloc_fhandle();
- if (!ctx->mount_info.mntfh) {
+ ctx->mntfh = nfs_alloc_fhandle();
+ if (!ctx->mntfh) {
kfree(ctx);
return -ENOMEM;
}
- nfs_copy_fh(ctx->mount_info.mntfh, src->mount_info.mntfh);
+ nfs_copy_fh(ctx->mntfh, src->mntfh);
- __module_get(ctx->mount_info.nfs_mod->owner);
+ __module_get(ctx->nfs_mod->owner);
ctx->client_address = NULL;
ctx->mount_server.hostname = NULL;
ctx->nfs_server.export_path = NULL;
ctx->nfs_server.hostname = NULL;
ctx->fscache_uniq = NULL;
- ctx->clone_data.addr = NULL;
ctx->clone_data.fattr = NULL;
fc->fs_private = ctx;
return 0;
@@ -1375,17 +1335,16 @@ static void nfs_fs_context_free(struct fs_context *fc)
struct nfs_fs_context *ctx = nfs_fc2context(fc);
if (ctx) {
- if (ctx->mount_info.server)
- nfs_free_server(ctx->mount_info.server);
- if (ctx->mount_info.nfs_mod)
- put_nfs_version(ctx->mount_info.nfs_mod);
+ if (ctx->server)
+ nfs_free_server(ctx->server);
+ if (ctx->nfs_mod)
+ put_nfs_version(ctx->nfs_mod);
kfree(ctx->client_address);
kfree(ctx->mount_server.hostname);
kfree(ctx->nfs_server.export_path);
kfree(ctx->nfs_server.hostname);
kfree(ctx->fscache_uniq);
- nfs_free_fhandle(ctx->mount_info.mntfh);
- kfree(ctx->clone_data.addr);
+ nfs_free_fhandle(ctx->mntfh);
nfs_free_fattr(ctx->clone_data.fattr);
kfree(ctx);
}
@@ -1413,9 +1372,8 @@ static int nfs_init_fs_context(struct fs_context *fc)
if (unlikely(!ctx))
return -ENOMEM;
- ctx->mount_info.ctx = ctx;
- ctx->mount_info.mntfh = nfs_alloc_fhandle();
- if (unlikely(!ctx->mount_info.mntfh)) {
+ ctx->mntfh = nfs_alloc_fhandle();
+ if (unlikely(!ctx->mntfh)) {
kfree(ctx);
return -ENOMEM;
}
@@ -1452,8 +1410,8 @@ static int nfs_init_fs_context(struct fs_context *fc)
fc->net_ns = get_net(net);
}
- ctx->mount_info.nfs_mod = nfss->nfs_client->cl_nfs_mod;
- __module_get(ctx->mount_info.nfs_mod->owner);
+ ctx->nfs_mod = nfss->nfs_client->cl_nfs_mod;
+ __module_get(ctx->nfs_mod->owner);
} else {
/* defaults */
ctx->timeo = NFS_UNSPEC_TIMEO;
@@ -1468,7 +1426,6 @@ static int nfs_init_fs_context(struct fs_context *fc)
ctx->minorversion = 0;
ctx->need_mount = true;
}
- ctx->net = fc->net_ns;
fc->fs_private = ctx;
fc->ops = &nfs_fs_context_ops;
return 0;
diff --git a/fs/nfs/fscache.c b/fs/nfs/fscache.c
index 3800ab6f08fa..4a8df8c30a03 100644
--- a/fs/nfs/fscache.c
+++ b/fs/nfs/fscache.c
@@ -128,7 +128,7 @@ void nfs_fscache_get_super_cookie(struct super_block *sb, const char *uniq, int
return;
key->nfs_client = nfss->nfs_client;
- key->key.super.s_flags = sb->s_flags & NFS_MS_MASK;
+ key->key.super.s_flags = sb->s_flags & NFS_SB_MASK;
key->key.nfs_server.flags = nfss->flags;
key->key.nfs_server.rsize = nfss->rsize;
key->key.nfs_server.wsize = nfss->wsize;
diff --git a/fs/nfs/getroot.c b/fs/nfs/getroot.c
index 878c4c5982d9..ab45496d23a6 100644
--- a/fs/nfs/getroot.c
+++ b/fs/nfs/getroot.c
@@ -64,66 +64,68 @@ static int nfs_superblock_set_dummy_root(struct super_block *sb, struct inode *i
/*
* get an NFS2/NFS3 root dentry from the root filehandle
*/
-struct dentry *nfs_get_root(struct super_block *sb, struct nfs_fh *mntfh,
- const char *devname)
+int nfs_get_root(struct super_block *s, struct fs_context *fc)
{
- struct nfs_server *server = NFS_SB(sb);
+ struct nfs_fs_context *ctx = nfs_fc2context(fc);
+ struct nfs_server *server = NFS_SB(s);
struct nfs_fsinfo fsinfo;
- struct dentry *ret;
+ struct dentry *root;
struct inode *inode;
- void *name = kstrdup(devname, GFP_KERNEL);
- int error;
+ char *name;
+ int error = -ENOMEM;
+ name = kstrdup(fc->source, GFP_KERNEL);
if (!name)
- return ERR_PTR(-ENOMEM);
+ goto out;
/* get the actual root for this mount */
fsinfo.fattr = nfs_alloc_fattr();
- if (fsinfo.fattr == NULL) {
- kfree(name);
- return ERR_PTR(-ENOMEM);
- }
+ if (fsinfo.fattr == NULL)
+ goto out_name;
- error = server->nfs_client->rpc_ops->getroot(server, mntfh, &fsinfo);
+ error = server->nfs_client->rpc_ops->getroot(server, ctx->mntfh, &fsinfo);
if (error < 0) {
dprintk("nfs_get_root: getattr error = %d\n", -error);
- ret = ERR_PTR(error);
- goto out;
+ goto out_fattr;
}
- inode = nfs_fhget(sb, mntfh, fsinfo.fattr, NULL);
+ inode = nfs_fhget(s, ctx->mntfh, fsinfo.fattr, NULL);
if (IS_ERR(inode)) {
dprintk("nfs_get_root: get root inode failed\n");
- ret = ERR_CAST(inode);
- goto out;
+ error = PTR_ERR(inode);
+ goto out_fattr;
}
- error = nfs_superblock_set_dummy_root(sb, inode);
- if (error != 0) {
- ret = ERR_PTR(error);
- goto out;
- }
+ error = nfs_superblock_set_dummy_root(s, inode);
+ if (error != 0)
+ goto out_fattr;
/* root dentries normally start off anonymous and get spliced in later
* if the dentry tree reaches them; however if the dentry already
* exists, we'll pick it up at this point and use it as the root
*/
- ret = d_obtain_root(inode);
- if (IS_ERR(ret)) {
+ root = d_obtain_root(inode);
+ if (IS_ERR(root)) {
dprintk("nfs_get_root: get root dentry failed\n");
- goto out;
+ error = PTR_ERR(root);
+ goto out_fattr;
}
- security_d_instantiate(ret, inode);
- spin_lock(&ret->d_lock);
- if (IS_ROOT(ret) && !ret->d_fsdata &&
- !(ret->d_flags & DCACHE_NFSFS_RENAMED)) {
- ret->d_fsdata = name;
+ security_d_instantiate(root, inode);
+ spin_lock(&root->d_lock);
+ if (IS_ROOT(root) && !root->d_fsdata &&
+ !(root->d_flags & DCACHE_NFSFS_RENAMED)) {
+ root->d_fsdata = name;
name = NULL;
}
- spin_unlock(&ret->d_lock);
-out:
- kfree(name);
+ spin_unlock(&root->d_lock);
+ fc->root = root;
+ error = 0;
+
+out_fattr:
nfs_free_fattr(fsinfo.fattr);
- return ret;
+out_name:
+ kfree(name);
+out:
+ return error;
}
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index ccbff3a9ccf6..007d058baad1 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -11,7 +11,7 @@
#include <linux/nfs_page.h>
#include <linux/wait_bit.h>
-#define NFS_MS_MASK (SB_RDONLY|SB_NOSUID|SB_NODEV|SB_NOEXEC|SB_SYNCHRONOUS)
+#define NFS_SB_MASK (SB_RDONLY|SB_NOSUID|SB_NODEV|SB_NOEXEC|SB_SYNCHRONOUS)
extern const struct export_operations nfs_export_ops;
@@ -33,17 +33,6 @@ static inline int nfs_attr_use_mounted_on_fileid(struct nfs_fattr *fattr)
return 1;
}
-struct nfs_clone_mount {
- const struct super_block *sb;
- struct dentry *dentry;
- char *hostname;
- char *mnt_path;
- struct sockaddr *addr;
- size_t addrlen;
- rpc_authflavor_t authflavor;
- struct nfs_fattr *fattr;
-};
-
/*
* Note: RFC 1813 doesn't limit the number of auth flavors that
* a server can return, so make something up.
@@ -80,15 +69,6 @@ struct nfs_client_initdata {
const struct cred *cred;
};
-struct nfs_mount_info {
- unsigned int inherited_bsize;
- struct nfs_fs_context *ctx;
- struct nfs_clone_mount *cloned;
- struct nfs_server *server;
- struct nfs_fh *mntfh;
- struct nfs_subversion *nfs_mod;
-};
-
/*
* In-kernel mount arguments
*/
@@ -140,13 +120,17 @@ struct nfs_fs_context {
unsigned short export_path_len;
} nfs_server;
- void *lsm_opts;
- struct net *net;
-
- char buf[32]; /* Parse buffer */
-
- struct nfs_mount_info mount_info;
- struct nfs_clone_mount clone_data;
+ struct nfs_fh *mntfh;
+ struct nfs_server *server;
+ struct nfs_subversion *nfs_mod;
+
+ /* Information for a cloned mount. */
+ struct nfs_clone_mount {
+ struct super_block *sb;
+ struct dentry *dentry;
+ struct nfs_fattr *fattr;
+ unsigned int inherited_bsize;
+ } clone_data;
};
static inline struct nfs_fs_context *nfs_fc2context(const struct fs_context *fc)
@@ -194,10 +178,9 @@ extern struct nfs_client *nfs4_find_client_ident(struct net *, int);
extern struct nfs_client *
nfs4_find_client_sessionid(struct net *, const struct sockaddr *,
struct nfs4_sessionid *, u32);
-extern struct nfs_server *nfs_create_server(struct nfs_mount_info *);
-extern struct nfs_server *nfs4_create_server(struct nfs_mount_info *);
-extern struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *,
- struct nfs_fh *);
+extern struct nfs_server *nfs_create_server(struct fs_context *);
+extern struct nfs_server *nfs4_create_server(struct fs_context *);
+extern struct nfs_server *nfs4_create_referral_server(struct fs_context *);
extern int nfs4_update_server(struct nfs_server *server, const char *hostname,
struct sockaddr *sap, size_t salen,
struct net *net);
@@ -444,12 +427,8 @@ int nfs_submount(struct fs_context *, struct nfs_server *);
int nfs_do_submount(struct fs_context *);
/* getroot.c */
-extern struct dentry *nfs_get_root(struct super_block *, struct nfs_fh *,
- const char *);
+extern int nfs_get_root(struct super_block *s, struct fs_context *fc);
#if IS_ENABLED(CONFIG_NFS_V4)
-extern struct dentry *nfs4_get_root(struct super_block *, struct nfs_fh *,
- const char *);
-
extern int nfs4_get_rootfh(struct nfs_server *server, struct nfs_fh *mntfh, bool);
#endif
diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c
index 927b0f732148..3e566a632215 100644
--- a/fs/nfs/namespace.c
+++ b/fs/nfs/namespace.c
@@ -176,8 +176,8 @@ struct vfsmount *nfs_d_automount(struct path *path)
ctx->version = client->rpc_ops->version;
ctx->minorversion = client->cl_minorversion;
- ctx->mount_info.nfs_mod = client->cl_nfs_mod;
- __module_get(ctx->mount_info.nfs_mod->owner);
+ ctx->nfs_mod = client->cl_nfs_mod;
+ __module_get(ctx->nfs_mod->owner);
ret = client->rpc_ops->submount(fc, server);
if (ret < 0) {
@@ -259,22 +259,22 @@ int nfs_do_submount(struct fs_context *fc)
int ret;
/* create a new volume representation */
- server = ctx->mount_info.nfs_mod->rpc_ops->clone_server(NFS_SB(ctx->clone_data.sb),
- ctx->mount_info.mntfh,
+ server = ctx->nfs_mod->rpc_ops->clone_server(NFS_SB(ctx->clone_data.sb),
+ ctx->mntfh,
ctx->clone_data.fattr,
ctx->selected_flavor);
if (IS_ERR(server))
return PTR_ERR(server);
- ctx->mount_info.server = server;
+ ctx->server = server;
buffer = kmalloc(4096, GFP_USER);
if (!buffer)
return -ENOMEM;
ctx->internal = true;
- ctx->mount_info.inherited_bsize = ctx->clone_data.sb->s_blocksize_bits;
+ ctx->clone_data.inherited_bsize = ctx->clone_data.sb->s_blocksize_bits;
p = nfs_devname(dentry, buffer, 4096);
if (IS_ERR(p)) {
@@ -299,7 +299,7 @@ int nfs_submount(struct fs_context *fc, struct nfs_server *server)
/* Look it up again to get its attributes */
err = server->nfs_client->rpc_ops->lookup(d_inode(parent), &dentry->d_name,
- ctx->mount_info.mntfh, ctx->clone_data.fattr,
+ ctx->mntfh, ctx->clone_data.fattr,
NULL);
dput(parent);
if (err != 0)
diff --git a/fs/nfs/nfs3_fs.h b/fs/nfs/nfs3_fs.h
index 09602dc1889f..1b950b66b3bb 100644
--- a/fs/nfs/nfs3_fs.h
+++ b/fs/nfs/nfs3_fs.h
@@ -27,7 +27,7 @@ static inline int nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl,
#endif /* CONFIG_NFS_V3_ACL */
/* nfs3client.c */
-struct nfs_server *nfs3_create_server(struct nfs_mount_info *);
+struct nfs_server *nfs3_create_server(struct fs_context *);
struct nfs_server *nfs3_clone_server(struct nfs_server *, struct nfs_fh *,
struct nfs_fattr *, rpc_authflavor_t);
diff --git a/fs/nfs/nfs3client.c b/fs/nfs/nfs3client.c
index a340b5d0e1a3..bfd9b5f03455 100644
--- a/fs/nfs/nfs3client.c
+++ b/fs/nfs/nfs3client.c
@@ -46,9 +46,10 @@ static inline void nfs_init_server_aclclient(struct nfs_server *server)
}
#endif
-struct nfs_server *nfs3_create_server(struct nfs_mount_info *mount_info)
+struct nfs_server *nfs3_create_server(struct fs_context *fc)
{
- struct nfs_server *server = nfs_create_server(mount_info);
+ struct nfs_server *server = nfs_create_server(fc);
+
/* Create a client RPC handle for the NFS v3 ACL management interface */
if (!IS_ERR(server))
nfs_init_server_aclclient(server);
diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c
index 2ee2281ce404..be26fbe06863 100644
--- a/fs/nfs/nfs4client.c
+++ b/fs/nfs/nfs4client.c
@@ -1052,9 +1052,9 @@ static int nfs4_server_common_setup(struct nfs_server *server,
/*
* Create a version 4 volume record
*/
-static int nfs4_init_server(struct nfs_server *server,
- struct nfs_fs_context *ctx)
+static int nfs4_init_server(struct nfs_server *server, struct fs_context *fc)
{
+ struct nfs_fs_context *ctx = nfs_fc2context(fc);
struct rpc_timeout timeparms;
int error;
@@ -1076,15 +1076,15 @@ static int nfs4_init_server(struct nfs_server *server,
/* Get a client record */
error = nfs4_set_client(server,
- ctx->nfs_server.hostname,
- (const struct sockaddr *)&ctx->nfs_server.address,
- ctx->nfs_server.addrlen,
- ctx->client_address,
- ctx->nfs_server.protocol,
- &timeparms,
- ctx->minorversion,
- ctx->nfs_server.nconnect,
- ctx->net);
+ ctx->nfs_server.hostname,
+ &ctx->nfs_server.address,
+ ctx->nfs_server.addrlen,
+ ctx->client_address,
+ ctx->nfs_server.protocol,
+ &timeparms,
+ ctx->minorversion,
+ ctx->nfs_server.nconnect,
+ fc->net_ns);
if (error < 0)
return error;
@@ -1107,10 +1107,9 @@ static int nfs4_init_server(struct nfs_server *server,
* Create a version 4 volume record
* - keyed on server and FSID
*/
-/*struct nfs_server *nfs4_create_server(const struct nfs_fs_context *data,
- struct nfs_fh *mntfh)*/
-struct nfs_server *nfs4_create_server(struct nfs_mount_info *mount_info)
+struct nfs_server *nfs4_create_server(struct fs_context *fc)
{
+ struct nfs_fs_context *ctx = nfs_fc2context(fc);
struct nfs_server *server;
bool auth_probe;
int error;
@@ -1121,14 +1120,14 @@ struct nfs_server *nfs4_create_server(struct nfs_mount_info *mount_info)
server->cred = get_cred(current_cred());
- auth_probe = mount_info->ctx->auth_info.flavor_len < 1;
+ auth_probe = ctx->auth_info.flavor_len < 1;
/* set up the general RPC client */
- error = nfs4_init_server(server, mount_info->ctx);
+ error = nfs4_init_server(server, fc);
if (error < 0)
goto error;
- error = nfs4_server_common_setup(server, mount_info->mntfh, auth_probe);
+ error = nfs4_server_common_setup(server, ctx->mntfh, auth_probe);
if (error < 0)
goto error;
@@ -1142,9 +1141,9 @@ struct nfs_server *nfs4_create_server(struct nfs_mount_info *mount_info)
/*
* Create an NFS4 referral server record
*/
-struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data,
- struct nfs_fh *mntfh)
+struct nfs_server *nfs4_create_referral_server(struct fs_context *fc)
{
+ struct nfs_fs_context *ctx = nfs_fc2context(fc);
struct nfs_client *parent_client;
struct nfs_server *server, *parent_server;
bool auth_probe;
@@ -1154,7 +1153,7 @@ struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data,
if (!server)
return ERR_PTR(-ENOMEM);
- parent_server = NFS_SB(data->sb);
+ parent_server = NFS_SB(ctx->clone_data.sb);
parent_client = parent_server->nfs_client;
server->cred = get_cred(parent_server->cred);
@@ -1164,10 +1163,11 @@ struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data,
/* Get a client representation */
#if IS_ENABLED(CONFIG_SUNRPC_XPRT_RDMA)
- rpc_set_port(data->addr, NFS_RDMA_PORT);
- error = nfs4_set_client(server, data->hostname,
- data->addr,
- data->addrlen,
+ rpc_set_port(&ctx->nfs_server.address, NFS_RDMA_PORT);
+ error = nfs4_set_client(server,
+ ctx->nfs_server.hostname,
+ &ctx->nfs_server.address,
+ ctx->nfs_server.addrlen,
parent_client->cl_ipaddr,
XPRT_TRANSPORT_RDMA,
parent_server->client->cl_timeout,
@@ -1178,10 +1178,11 @@ struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data,
goto init_server;
#endif /* IS_ENABLED(CONFIG_SUNRPC_XPRT_RDMA) */
- rpc_set_port(data->addr, NFS_PORT);
- error = nfs4_set_client(server, data->hostname,
- data->addr,
- data->addrlen,
+ rpc_set_port(&ctx->nfs_server.address, NFS_PORT);
+ error = nfs4_set_client(server,
+ ctx->nfs_server.hostname,
+ &ctx->nfs_server.address,
+ ctx->nfs_server.addrlen,
parent_client->cl_ipaddr,
XPRT_TRANSPORT_TCP,
parent_server->client->cl_timeout,
@@ -1194,13 +1195,14 @@ struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data,
#if IS_ENABLED(CONFIG_SUNRPC_XPRT_RDMA)
init_server:
#endif
- error = nfs_init_server_rpcclient(server, parent_server->client->cl_timeout, data->authflavor);
+ error = nfs_init_server_rpcclient(server, parent_server->client->cl_timeout,
+ ctx->selected_flavor);
if (error < 0)
goto error;
auth_probe = parent_server->auth_info.flavor_len < 1;
- error = nfs4_server_common_setup(server, mntfh, auth_probe);
+ error = nfs4_server_common_setup(server, ctx->mntfh, auth_probe);
if (error < 0)
goto error;
diff --git a/fs/nfs/nfs4namespace.c b/fs/nfs/nfs4namespace.c
index 04985aebe184..db94e9422501 100644
--- a/fs/nfs/nfs4namespace.c
+++ b/fs/nfs/nfs4namespace.c
@@ -130,9 +130,10 @@ static int nfs4_validate_fspath(struct dentry *dentry,
const struct nfs4_fs_locations *locations,
struct nfs_fs_context *ctx)
{
- const char *path, *fs_path;
- char *buf;
+ const char *path;
+ char *fs_path;
unsigned short len;
+ char *buf;
int n;
buf = kmalloc(4096, GFP_KERNEL);
@@ -143,7 +144,6 @@ static int nfs4_validate_fspath(struct dentry *dentry,
}
fs_path = nfs4_pathname_string(&locations->fs_path, &len);
-
n = strncmp(path, fs_path, len);
kfree(buf);
kfree(fs_path);
@@ -274,7 +274,6 @@ nfs4_negotiate_security(struct rpc_clnt *clnt, struct inode *inode,
static int try_location(struct fs_context *fc,
const struct nfs4_fs_location *location)
{
- const size_t addr_bufsize = sizeof(struct sockaddr_storage);
struct nfs_fs_context *ctx = nfs_fc2context(fc);
unsigned int len, s;
char *export_path, *source, *p;
@@ -310,29 +309,24 @@ static int try_location(struct fs_context *fc,
kfree(fc->source);
fc->source = source;
-
- ctx->clone_data.addr = kmalloc(addr_bufsize, GFP_KERNEL);
- if (ctx->clone_data.addr == NULL)
- return -ENOMEM;
for (s = 0; s < location->nservers; s++) {
const struct nfs4_string *buf = &location->servers[s];
if (memchr(buf->data, IPV6_SCOPE_DELIMITER, buf->len))
continue;
- ctx->clone_data.addrlen =
+ ctx->nfs_server.addrlen =
nfs_parse_server_name(buf->data, buf->len,
- ctx->clone_data.addr,
- addr_bufsize,
+ &ctx->nfs_server.address,
+ sizeof(ctx->nfs_server._address),
fc->net_ns);
- if (ctx->clone_data.addrlen == 0)
+ if (ctx->nfs_server.addrlen == 0)
continue;
- rpc_set_port(ctx->clone_data.addr, NFS_PORT);
+ rpc_set_port(&ctx->nfs_server.address, NFS_PORT);
memcpy(ctx->nfs_server.hostname, buf->data, buf->len);
ctx->nfs_server.hostname[buf->len] = '\0';
- ctx->clone_data.hostname = ctx->nfs_server.hostname;
p = source;
memcpy(p, buf->data, buf->len);
@@ -445,7 +439,7 @@ int nfs4_submount(struct fs_context *fc, struct nfs_server *server)
int ret;
/* Look it up again to get its attributes and sec flavor */
- client = nfs4_proc_lookup_mountpoint(dir, name, ctx->mount_info.mntfh,
+ client = nfs4_proc_lookup_mountpoint(dir, name, ctx->mntfh,
ctx->clone_data.fattr);
dput(parent);
if (IS_ERR(client))
diff --git a/fs/nfs/nfs4super.c b/fs/nfs/nfs4super.c
index 96edee546b8a..3b27c5e3d781 100644
--- a/fs/nfs/nfs4super.c
+++ b/fs/nfs/nfs4super.c
@@ -35,12 +35,12 @@ static const struct super_operations nfs4_sops = {
};
struct nfs_subversion nfs_v4 = {
- .owner = THIS_MODULE,
- .nfs_fs = &nfs4_fs_type,
- .rpc_vers = &nfs_version4,
- .rpc_ops = &nfs_v4_clientops,
- .sops = &nfs4_sops,
- .xattr = nfs4_xattr_handlers,
+ .owner = THIS_MODULE,
+ .nfs_fs = &nfs4_fs_type,
+ .rpc_vers = &nfs_version4,
+ .rpc_ops = &nfs_v4_clientops,
+ .sops = &nfs4_sops,
+ .xattr = nfs4_xattr_handlers,
};
static int nfs4_write_inode(struct inode *inode, struct writeback_control *wbc)
@@ -168,7 +168,7 @@ static int do_nfs4_mount(struct nfs_server *server,
root_ctx = nfs_fc2context(root_fc);
root_ctx->internal = true;
- root_ctx->mount_info.server = server;
+ root_ctx->server = server;
/* We leave export_path unset as it's not used to find the root. */
len = strlen(hostname) + 5;
@@ -221,7 +221,7 @@ int nfs4_try_get_tree(struct fs_context *fc)
/* We create a mount for the server's root, walk to the requested
* location and then create another mount for that.
*/
- err= do_nfs4_mount(nfs4_create_server(&ctx->mount_info),
+ err= do_nfs4_mount(nfs4_create_server(fc),
fc, ctx->nfs_server.hostname,
ctx->nfs_server.export_path);
if (err) {
@@ -243,7 +243,7 @@ int nfs4_get_referral_tree(struct fs_context *fc)
dprintk("--> nfs4_referral_mount()\n");
/* create a new volume representation */
- err = do_nfs4_mount(nfs4_create_referral_server(&ctx->clone_data, ctx->mount_info.mntfh),
+ err = do_nfs4_mount(nfs4_create_referral_server(fc),
fc, ctx->nfs_server.hostname,
ctx->nfs_server.export_path);
if (err) {
@@ -254,7 +254,6 @@ int nfs4_get_referral_tree(struct fs_context *fc)
return err;
}
-
static int __init init_nfs_v4(void)
{
int err;
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 6ff99da978a8..ed0290d5ebf3 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -745,11 +745,12 @@ static int nfs_verify_authflavors(struct nfs_fs_context *ctx,
* Use the remote server's MOUNT service to request the NFS file handle
* corresponding to the provided path.
*/
-static int nfs_request_mount(struct nfs_fs_context *ctx,
+static int nfs_request_mount(struct fs_context *fc,
struct nfs_fh *root_fh,
rpc_authflavor_t *server_authlist,
unsigned int *server_authlist_len)
{
+ struct nfs_fs_context *ctx = nfs_fc2context(fc);
struct nfs_mount_request request = {
.sap = (struct sockaddr *)
&ctx->mount_server.address,
@@ -759,7 +760,7 @@ static int nfs_request_mount(struct nfs_fs_context *ctx,
.noresvport = ctx->flags & NFS_MOUNT_NORESVPORT,
.auth_flav_len = server_authlist_len,
.auth_flavs = server_authlist,
- .net = ctx->net,
+ .net = fc->net_ns,
};
int status;
@@ -804,20 +805,18 @@ static int nfs_request_mount(struct nfs_fs_context *ctx,
return 0;
}
-static struct nfs_server *nfs_try_mount_request(struct nfs_mount_info *mount_info)
+static struct nfs_server *nfs_try_mount_request(struct fs_context *fc)
{
+ struct nfs_fs_context *ctx = nfs_fc2context(fc);
int status;
unsigned int i;
bool tried_auth_unix = false;
bool auth_null_in_list = false;
struct nfs_server *server = ERR_PTR(-EACCES);
- struct nfs_fs_context *ctx = mount_info->ctx;
rpc_authflavor_t authlist[NFS_MAX_SECFLAVORS];
unsigned int authlist_len = ARRAY_SIZE(authlist);
- struct nfs_subversion *nfs_mod = mount_info->nfs_mod;
- status = nfs_request_mount(ctx, mount_info->mntfh, authlist,
- &authlist_len);
+ status = nfs_request_mount(fc, ctx->mntfh, authlist, &authlist_len);
if (status)
return ERR_PTR(status);
@@ -831,7 +830,7 @@ static struct nfs_server *nfs_try_mount_request(struct nfs_mount_info *mount_inf
ctx->selected_flavor);
if (status)
return ERR_PTR(status);
- return nfs_mod->rpc_ops->create_server(mount_info);
+ return ctx->nfs_mod->rpc_ops->create_server(fc);
}
/*
@@ -858,7 +857,7 @@ static struct nfs_server *nfs_try_mount_request(struct nfs_mount_info *mount_inf
}
dfprintk(MOUNT, "NFS: attempting to use auth flavor %u\n", flavor);
ctx->selected_flavor = flavor;
- server = nfs_mod->rpc_ops->create_server(mount_info);
+ server = ctx->nfs_mod->rpc_ops->create_server(fc);
if (!IS_ERR(server))
return server;
}
@@ -874,7 +873,7 @@ static struct nfs_server *nfs_try_mount_request(struct nfs_mount_info *mount_inf
/* Last chance! Try AUTH_UNIX */
dfprintk(MOUNT, "NFS: attempting to use auth flavor %u\n", RPC_AUTH_UNIX);
ctx->selected_flavor = RPC_AUTH_UNIX;
- return nfs_mod->rpc_ops->create_server(mount_info);
+ return ctx->nfs_mod->rpc_ops->create_server(fc);
}
int nfs_try_get_tree(struct fs_context *fc)
@@ -882,9 +881,9 @@ int nfs_try_get_tree(struct fs_context *fc)
struct nfs_fs_context *ctx = nfs_fc2context(fc);
if (ctx->need_mount)
- ctx->mount_info.server = nfs_try_mount_request(&ctx->mount_info);
+ ctx->server = nfs_try_mount_request(fc);
else
- ctx->mount_info.server = ctx->mount_info.nfs_mod->rpc_ops->create_server(&ctx->mount_info);
+ ctx->server = ctx->nfs_mod->rpc_ops->create_server(fc);
return nfs_get_tree_common(fc);
}
@@ -966,9 +965,8 @@ EXPORT_SYMBOL_GPL(nfs_reconfigure);
/*
* Finish setting up an NFS superblock
*/
-static void nfs_fill_super(struct super_block *sb, struct nfs_mount_info *mount_info)
+static void nfs_fill_super(struct super_block *sb, struct nfs_fs_context *ctx)
{
- struct nfs_fs_context *ctx = mount_info->ctx;
struct nfs_server *server = NFS_SB(sb);
sb->s_blocksize_bits = 0;
@@ -1009,13 +1007,14 @@ static void nfs_fill_super(struct super_block *sb, struct nfs_mount_info *mount_
nfs_super_set_maxbytes(sb, server->maxfilesize);
}
-static int nfs_compare_mount_options(const struct super_block *s, const struct nfs_server *b, int flags)
+static int nfs_compare_mount_options(const struct super_block *s, const struct nfs_server *b,
+ const struct fs_context *fc)
{
const struct nfs_server *a = s->s_fs_info;
const struct rpc_clnt *clnt_a = a->client;
const struct rpc_clnt *clnt_b = b->client;
- if ((s->s_flags & NFS_MS_MASK) != (flags & NFS_MS_MASK))
+ if ((s->s_flags & NFS_SB_MASK) != (fc->sb_flags & NFS_SB_MASK))
goto Ebusy;
if (a->nfs_client != b->nfs_client)
goto Ebusy;
@@ -1122,7 +1121,7 @@ static int nfs_compare_super(struct super_block *sb, struct fs_context *fc)
return 0;
if (!nfs_compare_userns(old, server))
return 0;
- return nfs_compare_mount_options(sb, server, fc->sb_flags);
+ return nfs_compare_mount_options(sb, server, fc);
}
#ifdef CONFIG_NFS_FSCACHE
@@ -1177,13 +1176,12 @@ int nfs_get_tree_common(struct fs_context *fc)
{
struct nfs_fs_context *ctx = nfs_fc2context(fc);
struct super_block *s;
- struct dentry *mntroot = ERR_PTR(-ENOMEM);
int (*compare_super)(struct super_block *, struct fs_context *) = nfs_compare_super;
- struct nfs_server *server = ctx->mount_info.server;
+ struct nfs_server *server = ctx->server;
unsigned long kflags = 0, kflags_out = 0;
int error;
- ctx->mount_info.server = NULL;
+ ctx->server = NULL;
if (IS_ERR(server))
return PTR_ERR(server);
@@ -1224,9 +1222,9 @@ int nfs_get_tree_common(struct fs_context *fc)
}
if (!s->s_root) {
- unsigned bsize = ctx->mount_info.inherited_bsize;
+ unsigned bsize = ctx->clone_data.inherited_bsize;
/* initial superblock/root creation */
- nfs_fill_super(s, &ctx->mount_info);
+ nfs_fill_super(s, ctx);
if (bsize) {
s->s_blocksize_bits = bsize;
s->s_blocksize = 1U << bsize;
@@ -1234,13 +1232,11 @@ int nfs_get_tree_common(struct fs_context *fc)
nfs_get_cache_cookie(s, ctx);
}
- mntroot = nfs_get_root(s, ctx->mount_info.mntfh, fc->source);
- if (IS_ERR(mntroot)) {
- error = PTR_ERR(mntroot);
+ error = nfs_get_root(s, fc);
+ if (error < 0) {
dfprintk(MOUNT, "NFS: Couldn't get root dentry\n");
goto error_splat_super;
}
- fc->root = mntroot;
if (NFS_SB(s)->caps & NFS_CAP_SECURITY_LABEL)
kflags |= SECURITY_LSM_NATIVE_LABELS;
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index 3de843888bc0..ed9f215d03ea 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -1705,7 +1705,7 @@ struct nfs_rpc_ops {
struct nfs_client *(*init_client) (struct nfs_client *,
const struct nfs_client_initdata *);
void (*free_client) (struct nfs_client *);
- struct nfs_server *(*create_server)(struct nfs_mount_info *);
+ struct nfs_server *(*create_server)(struct fs_context *);
struct nfs_server *(*clone_server)(struct nfs_server *, struct nfs_fh *,
struct nfs_fattr *, rpc_authflavor_t);
};
--
2.17.2
From: David Howells <[email protected]>
Split nfs_parse_mount_options() to move the prologue, list-splitting and
epilogue into one function and the per-option processing into another.
Signed-off-by: David Howells <[email protected]>
Signed-off-by: Al Viro <[email protected]>
---
fs/nfs/fs_context.c | 126 ++++++++++++++++++++++++--------------------
fs/nfs/internal.h | 3 ++
2 files changed, 73 insertions(+), 56 deletions(-)
diff --git a/fs/nfs/fs_context.c b/fs/nfs/fs_context.c
index 63aa5faed9da..3ad8fc68e623 100644
--- a/fs/nfs/fs_context.c
+++ b/fs/nfs/fs_context.c
@@ -496,36 +496,18 @@ static int nfs_get_option_ul_bound(substring_t args[], unsigned long *option,
}
/*
- * Error-check and convert a string of mount options from user space into
- * a data structure. The whole mount string is processed; bad options are
- * skipped as they are encountered. If there were no errors, return 1;
- * otherwise return 0 (zero).
+ * Parse a single mount option in "key[=val]" form.
*/
-int nfs_parse_mount_options(char *raw, struct nfs_fs_context *ctx)
+static int nfs_fs_context_parse_option(struct nfs_fs_context *ctx, char *p)
{
- char *p, *string;
- int rc, sloppy = 0, invalid_option = 0;
- unsigned short protofamily = AF_UNSPEC;
- unsigned short mountfamily = AF_UNSPEC;
-
- if (!raw) {
- dfprintk(MOUNT, "NFS: mount options string was NULL.\n");
- return 1;
- }
- dfprintk(MOUNT, "NFS: nfs mount opts='%s'\n", raw);
-
- rc = security_sb_eat_lsm_opts(raw, &ctx->lsm_opts);
- if (rc)
- goto out_security_failure;
+ char *string;
+ int rc;
- while ((p = strsep(&raw, ",")) != NULL) {
+ {
substring_t args[MAX_OPT_ARGS];
unsigned long option;
int token;
- if (!*p)
- continue;
-
dfprintk(MOUNT, "NFS: parsing nfs mount option '%s'\n", p);
token = match_token(p, nfs_mount_option_tokens, args);
@@ -734,7 +716,7 @@ int nfs_parse_mount_options(char *raw, struct nfs_fs_context *ctx)
if (!rc) {
dfprintk(MOUNT, "NFS: unrecognized "
"security flavor\n");
- return 0;
+ return -EINVAL;
}
break;
case Opt_proto:
@@ -744,24 +726,24 @@ int nfs_parse_mount_options(char *raw, struct nfs_fs_context *ctx)
token = match_token(string,
nfs_xprt_protocol_tokens, args);
- protofamily = AF_INET;
+ ctx->protofamily = AF_INET;
switch (token) {
case Opt_xprt_udp6:
- protofamily = AF_INET6;
+ ctx->protofamily = AF_INET6;
/* fall through */
case Opt_xprt_udp:
ctx->flags &= ~NFS_MOUNT_TCP;
ctx->nfs_server.protocol = XPRT_TRANSPORT_UDP;
break;
case Opt_xprt_tcp6:
- protofamily = AF_INET6;
+ ctx->protofamily = AF_INET6;
/* fall through */
case Opt_xprt_tcp:
ctx->flags |= NFS_MOUNT_TCP;
ctx->nfs_server.protocol = XPRT_TRANSPORT_TCP;
break;
case Opt_xprt_rdma6:
- protofamily = AF_INET6;
+ ctx->protofamily = AF_INET6;
/* fall through */
case Opt_xprt_rdma:
/* vector side protocols to TCP */
@@ -773,7 +755,7 @@ int nfs_parse_mount_options(char *raw, struct nfs_fs_context *ctx)
dfprintk(MOUNT, "NFS: unrecognized "
"transport protocol\n");
kfree(string);
- return 0;
+ return -EINVAL;
}
kfree(string);
break;
@@ -785,16 +767,16 @@ int nfs_parse_mount_options(char *raw, struct nfs_fs_context *ctx)
nfs_xprt_protocol_tokens, args);
kfree(string);
- mountfamily = AF_INET;
+ ctx->mountfamily = AF_INET;
switch (token) {
case Opt_xprt_udp6:
- mountfamily = AF_INET6;
+ ctx->mountfamily = AF_INET6;
/* fall through */
case Opt_xprt_udp:
ctx->mount_server.protocol = XPRT_TRANSPORT_UDP;
break;
case Opt_xprt_tcp6:
- mountfamily = AF_INET6;
+ ctx->mountfamily = AF_INET6;
/* fall through */
case Opt_xprt_tcp:
ctx->mount_server.protocol = XPRT_TRANSPORT_TCP;
@@ -803,7 +785,7 @@ int nfs_parse_mount_options(char *raw, struct nfs_fs_context *ctx)
default:
dfprintk(MOUNT, "NFS: unrecognized "
"transport protocol\n");
- return 0;
+ return -EINVAL;
}
break;
case Opt_addr:
@@ -867,7 +849,7 @@ int nfs_parse_mount_options(char *raw, struct nfs_fs_context *ctx)
default:
dfprintk(MOUNT, "NFS: invalid "
"lookupcache argument\n");
- return 0;
+ return -EINVAL;
};
break;
case Opt_fscache_uniq:
@@ -900,7 +882,7 @@ int nfs_parse_mount_options(char *raw, struct nfs_fs_context *ctx)
default:
dfprintk(MOUNT, "NFS: invalid "
"local_lock argument\n");
- return 0;
+ return -EINVAL;
};
break;
@@ -908,7 +890,7 @@ int nfs_parse_mount_options(char *raw, struct nfs_fs_context *ctx)
* Special options
*/
case Opt_sloppy:
- sloppy = 1;
+ ctx->sloppy = 1;
dfprintk(MOUNT, "NFS: relaxing parsing rules\n");
break;
case Opt_userspace:
@@ -918,12 +900,53 @@ int nfs_parse_mount_options(char *raw, struct nfs_fs_context *ctx)
break;
default:
- invalid_option = 1;
dfprintk(MOUNT, "NFS: unrecognized mount option "
"'%s'\n", p);
+ return -EINVAL;
}
}
+ return 0;
+
+out_invalid_address:
+ printk(KERN_INFO "NFS: bad IP address specified: %s\n", p);
+ return -EINVAL;
+out_invalid_value:
+ printk(KERN_INFO "NFS: bad mount option value specified: %s\n", p);
+ return -EINVAL;
+out_nomem:
+ printk(KERN_INFO "NFS: not enough memory to parse option\n");
+ return -ENOMEM;
+}
+
+/*
+ * Error-check and convert a string of mount options from user space into
+ * a data structure. The whole mount string is processed; bad options are
+ * skipped as they are encountered. If there were no errors, return 1;
+ * otherwise return 0 (zero).
+ */
+int nfs_parse_mount_options(char *raw, struct nfs_fs_context *ctx)
+{
+ char *p;
+ int rc, sloppy = 0, invalid_option = 0;
+
+ if (!raw) {
+ dfprintk(MOUNT, "NFS: mount options string was NULL.\n");
+ return 1;
+ }
+ dfprintk(MOUNT, "NFS: nfs mount opts='%s'\n", raw);
+
+ rc = security_sb_eat_lsm_opts(raw, &ctx->lsm_opts);
+ if (rc)
+ goto out_security_failure;
+
+ while ((p = strsep(&raw, ",")) != NULL) {
+ if (!*p)
+ continue;
+ if (nfs_fs_context_parse_option(ctx, p) < 0)
+ invalid_option = true;
+ }
+
if (!sloppy && invalid_option)
return 0;
@@ -938,22 +961,26 @@ int nfs_parse_mount_options(char *raw, struct nfs_fs_context *ctx)
* verify that any proto=/mountproto= options match the address
* families in the addr=/mountaddr= options.
*/
- if (protofamily != AF_UNSPEC &&
- protofamily != ctx->nfs_server.address.ss_family)
+ if (ctx->protofamily != AF_UNSPEC &&
+ ctx->protofamily != ctx->nfs_server.address.ss_family)
goto out_proto_mismatch;
- if (mountfamily != AF_UNSPEC) {
+ if (ctx->mountfamily != AF_UNSPEC) {
if (ctx->mount_server.addrlen) {
- if (mountfamily != ctx->mount_server.address.ss_family)
+ if (ctx->mountfamily != ctx->mount_server.address.ss_family)
goto out_mountproto_mismatch;
} else {
- if (mountfamily != ctx->nfs_server.address.ss_family)
+ if (ctx->mountfamily != ctx->nfs_server.address.ss_family)
goto out_mountproto_mismatch;
}
}
return 1;
+out_minorversion_mismatch:
+ printk(KERN_INFO "NFS: mount option vers=%u does not support "
+ "minorversion=%u\n", ctx->version, ctx->minorversion);
+ return 0;
out_mountproto_mismatch:
printk(KERN_INFO "NFS: mount server address does not match mountproto= "
"option\n");
@@ -961,23 +988,10 @@ int nfs_parse_mount_options(char *raw, struct nfs_fs_context *ctx)
out_proto_mismatch:
printk(KERN_INFO "NFS: server address does not match proto= option\n");
return 0;
-out_invalid_address:
- printk(KERN_INFO "NFS: bad IP address specified: %s\n", p);
- return 0;
-out_invalid_value:
- printk(KERN_INFO "NFS: bad mount option value specified: %s\n", p);
- return 0;
-out_minorversion_mismatch:
- printk(KERN_INFO "NFS: mount option vers=%u does not support "
- "minorversion=%u\n", ctx->version, ctx->minorversion);
- return 0;
out_migration_misuse:
printk(KERN_INFO
"NFS: 'migration' not supported for this NFS version\n");
- return 0;
-out_nomem:
- printk(KERN_INFO "NFS: not enough memory to parse option\n");
- return 0;
+ return -EINVAL;
out_security_failure:
printk(KERN_INFO "NFS: security options invalid: %d\n", rc);
return 0;
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index a553b11aebe9..6e290b480fa8 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -96,7 +96,10 @@ struct nfs_fs_context {
unsigned int version;
unsigned int minorversion;
char *fscache_uniq;
+ unsigned short protofamily;
+ unsigned short mountfamily;
bool need_mount;
+ bool sloppy;
struct {
struct sockaddr_storage address;
--
2.17.2
From: David Howells <[email protected]>
Do some tidying of the parsing code, including:
(*) Returning 0/error rather than true/false.
(*) Putting the nfs_fs_context pointer first in some arg lists.
(*) Unwrap some lines that will now fit on one line.
(*) Provide unioned sockaddr/sockaddr_storage fields to avoid casts.
(*) nfs_parse_devname() can paste its return values directly into the
nfs_fs_context struct as that's where the caller puts them.
Signed-off-by: David Howells <[email protected]>
Signed-off-by: Al Viro <[email protected]>
---
fs/nfs/fs_context.c | 128 +++++++++++++++++++-------------------------
fs/nfs/internal.h | 16 ++++--
fs/nfs/super.c | 2 +-
3 files changed, 67 insertions(+), 79 deletions(-)
diff --git a/fs/nfs/fs_context.c b/fs/nfs/fs_context.c
index ad502b37a3f3..96720cfd1065 100644
--- a/fs/nfs/fs_context.c
+++ b/fs/nfs/fs_context.c
@@ -343,8 +343,9 @@ static void nfs_set_mount_transport_protocol(struct nfs_fs_context *ctx)
* Add 'flavor' to 'auth_info' if not already present.
* Returns true if 'flavor' ends up in the list, false otherwise
*/
-static bool nfs_auth_info_add(struct nfs_auth_info *auth_info,
- rpc_authflavor_t flavor)
+static int nfs_auth_info_add(struct nfs_fs_context *ctx,
+ struct nfs_auth_info *auth_info,
+ rpc_authflavor_t flavor)
{
unsigned int i;
unsigned int max_flavor_len = ARRAY_SIZE(auth_info->flavors);
@@ -352,26 +353,27 @@ static bool nfs_auth_info_add(struct nfs_auth_info *auth_info,
/* make sure this flavor isn't already in the list */
for (i = 0; i < auth_info->flavor_len; i++) {
if (flavor == auth_info->flavors[i])
- return true;
+ return 0;
}
if (auth_info->flavor_len + 1 >= max_flavor_len) {
dfprintk(MOUNT, "NFS: too many sec= flavors\n");
- return false;
+ return -EINVAL;
}
auth_info->flavors[auth_info->flavor_len++] = flavor;
- return true;
+ return 0;
}
/*
* Parse the value of the 'sec=' option.
*/
-static int nfs_parse_security_flavors(char *value, struct nfs_fs_context *ctx)
+static int nfs_parse_security_flavors(struct nfs_fs_context *ctx, char *value)
{
substring_t args[MAX_OPT_ARGS];
rpc_authflavor_t pseudoflavor;
char *p;
+ int ret;
dfprintk(MOUNT, "NFS: parsing sec=%s option\n", value);
@@ -413,19 +415,20 @@ static int nfs_parse_security_flavors(char *value, struct nfs_fs_context *ctx)
default:
dfprintk(MOUNT,
"NFS: sec= option '%s' not recognized\n", p);
- return 0;
+ return -EINVAL;
}
- if (!nfs_auth_info_add(&ctx->auth_info, pseudoflavor))
- return 0;
+ ret = nfs_auth_info_add(ctx, &ctx->auth_info, pseudoflavor);
+ if (ret < 0)
+ return ret;
}
- return 1;
+ return 0;
}
-static int nfs_parse_version_string(char *string,
- struct nfs_fs_context *ctx,
- substring_t *args)
+static int nfs_parse_version_string(struct nfs_fs_context *ctx,
+ char *string,
+ substring_t *args)
{
ctx->flags &= ~NFS_MOUNT_VER3;
switch (match_token(string, nfs_vers_tokens, args)) {
@@ -456,9 +459,10 @@ static int nfs_parse_version_string(char *string,
ctx->minorversion = 2;
break;
default:
- return 0;
+ dfprintk(MOUNT, "NFS: Unsupported NFS version\n");
+ return -EINVAL;
}
- return 1;
+ return 0;
}
static int nfs_get_option_str(substring_t args[], char **option)
@@ -513,7 +517,7 @@ static int nfs_fs_context_parse_option(struct nfs_fs_context *ctx, char *p)
{
substring_t args[MAX_OPT_ARGS];
char *string;
- int token, rc;
+ int token, ret;
dfprintk(MOUNT, "NFS: parsing nfs mount option '%s'\n", p);
@@ -553,13 +557,11 @@ static int nfs_fs_context_parse_option(struct nfs_fs_context *ctx, char *p)
break;
case Opt_lock:
ctx->flags &= ~NFS_MOUNT_NONLM;
- ctx->flags &= ~(NFS_MOUNT_LOCAL_FLOCK |
- NFS_MOUNT_LOCAL_FCNTL);
+ ctx->flags &= ~(NFS_MOUNT_LOCAL_FLOCK | NFS_MOUNT_LOCAL_FCNTL);
break;
case Opt_nolock:
ctx->flags |= NFS_MOUNT_NONLM;
- ctx->flags |= (NFS_MOUNT_LOCAL_FLOCK |
- NFS_MOUNT_LOCAL_FCNTL);
+ ctx->flags |= (NFS_MOUNT_LOCAL_FLOCK | NFS_MOUNT_LOCAL_FCNTL);
break;
case Opt_udp:
ctx->flags &= ~NFS_MOUNT_TCP;
@@ -692,29 +694,25 @@ static int nfs_fs_context_parse_option(struct nfs_fs_context *ctx, char *p)
string = match_strdup(args);
if (string == NULL)
goto out_nomem;
- rc = nfs_parse_version_string(string, ctx, args);
+ ret = nfs_parse_version_string(ctx, string, args);
kfree(string);
- if (!rc)
- goto out_invalid_value;
+ if (ret < 0)
+ return ret;
break;
case Opt_sec:
string = match_strdup(args);
if (string == NULL)
goto out_nomem;
- rc = nfs_parse_security_flavors(string, ctx);
+ ret = nfs_parse_security_flavors(ctx, string);
kfree(string);
- if (!rc) {
- dfprintk(MOUNT, "NFS: unrecognized "
- "security flavor\n");
- return -EINVAL;
- }
+ if (ret < 0)
+ return ret;
break;
case Opt_proto:
string = match_strdup(args);
if (string == NULL)
goto out_nomem;
- token = match_token(string,
- nfs_xprt_protocol_tokens, args);
+ token = match_token(string, nfs_xprt_protocol_tokens, args);
ctx->protofamily = AF_INET;
switch (token) {
@@ -742,9 +740,8 @@ static int nfs_fs_context_parse_option(struct nfs_fs_context *ctx, char *p)
xprt_load_transport(string);
break;
default:
- dfprintk(MOUNT, "NFS: unrecognized "
- "transport protocol\n");
kfree(string);
+ dfprintk(MOUNT, "NFS: unrecognized transport protocol\n");
return -EINVAL;
}
kfree(string);
@@ -753,8 +750,7 @@ static int nfs_fs_context_parse_option(struct nfs_fs_context *ctx, char *p)
string = match_strdup(args);
if (string == NULL)
goto out_nomem;
- token = match_token(string,
- nfs_xprt_protocol_tokens, args);
+ token = match_token(string, nfs_xprt_protocol_tokens, args);
kfree(string);
ctx->mountfamily = AF_INET;
@@ -773,8 +769,7 @@ static int nfs_fs_context_parse_option(struct nfs_fs_context *ctx, char *p)
break;
case Opt_xprt_rdma: /* not used for side protocols */
default:
- dfprintk(MOUNT, "NFS: unrecognized "
- "transport protocol\n");
+ dfprintk(MOUNT, "NFS: unrecognized transport protocol\n");
return -EINVAL;
}
break;
@@ -784,9 +779,8 @@ static int nfs_fs_context_parse_option(struct nfs_fs_context *ctx, char *p)
goto out_nomem;
ctx->nfs_server.addrlen =
rpc_pton(ctx->net, string, strlen(string),
- (struct sockaddr *)
&ctx->nfs_server.address,
- sizeof(ctx->nfs_server.address));
+ sizeof(ctx->nfs_server._address));
kfree(string);
if (ctx->nfs_server.addrlen == 0)
goto out_invalid_address;
@@ -796,8 +790,7 @@ static int nfs_fs_context_parse_option(struct nfs_fs_context *ctx, char *p)
goto out_nomem;
break;
case Opt_mounthost:
- if (nfs_get_option_str(args,
- &ctx->mount_server.hostname))
+ if (nfs_get_option_str(args, &ctx->mount_server.hostname))
goto out_nomem;
break;
case Opt_mountaddr:
@@ -806,9 +799,8 @@ static int nfs_fs_context_parse_option(struct nfs_fs_context *ctx, char *p)
goto out_nomem;
ctx->mount_server.addrlen =
rpc_pton(ctx->net, string, strlen(string),
- (struct sockaddr *)
&ctx->mount_server.address,
- sizeof(ctx->mount_server.address));
+ sizeof(ctx->mount_server._address));
kfree(string);
if (ctx->mount_server.addrlen == 0)
goto out_invalid_address;
@@ -822,8 +814,7 @@ static int nfs_fs_context_parse_option(struct nfs_fs_context *ctx, char *p)
string = match_strdup(args);
if (string == NULL)
goto out_nomem;
- token = match_token(string,
- nfs_lookupcache_tokens, args);
+ token = match_token(string, nfs_lookupcache_tokens, args);
kfree(string);
switch (token) {
case Opt_lookupcache_all:
@@ -837,10 +828,9 @@ static int nfs_fs_context_parse_option(struct nfs_fs_context *ctx, char *p)
ctx->flags |= NFS_MOUNT_LOOKUP_CACHE_NONEG|NFS_MOUNT_LOOKUP_CACHE_NONE;
break;
default:
- dfprintk(MOUNT, "NFS: invalid "
- "lookupcache argument\n");
+ dfprintk(MOUNT, "NFS: invalid lookupcache argument\n");
return -EINVAL;
- };
+ }
break;
case Opt_fscache_uniq:
if (nfs_get_option_str(args, &ctx->fscache_uniq))
@@ -851,8 +841,7 @@ static int nfs_fs_context_parse_option(struct nfs_fs_context *ctx, char *p)
string = match_strdup(args);
if (string == NULL)
goto out_nomem;
- token = match_token(string, nfs_local_lock_tokens,
- args);
+ token = match_token(string, nfs_local_lock_tokens, args);
kfree(string);
switch (token) {
case Opt_local_lock_all:
@@ -870,8 +859,7 @@ static int nfs_fs_context_parse_option(struct nfs_fs_context *ctx, char *p)
NFS_MOUNT_LOCAL_FCNTL);
break;
default:
- dfprintk(MOUNT, "NFS: invalid "
- "local_lock argument\n");
+ dfprintk(MOUNT, "NFS: invalid local_lock argument\n");
return -EINVAL;
};
break;
@@ -885,13 +873,11 @@ static int nfs_fs_context_parse_option(struct nfs_fs_context *ctx, char *p)
break;
case Opt_userspace:
case Opt_deprecated:
- dfprintk(MOUNT, "NFS: ignoring mount option "
- "'%s'\n", p);
+ dfprintk(MOUNT, "NFS: ignoring mount option '%s'\n", p);
break;
default:
- dfprintk(MOUNT, "NFS: unrecognized mount option "
- "'%s'\n", p);
+ dfprintk(MOUNT, "NFS: unrecognized mount option '%s'\n", p);
return -EINVAL;
}
@@ -951,15 +937,15 @@ int nfs_parse_mount_options(char *raw, struct nfs_fs_context *ctx)
* families in the addr=/mountaddr= options.
*/
if (ctx->protofamily != AF_UNSPEC &&
- ctx->protofamily != ctx->nfs_server.address.ss_family)
+ ctx->protofamily != ctx->nfs_server.address.sa_family)
goto out_proto_mismatch;
if (ctx->mountfamily != AF_UNSPEC) {
if (ctx->mount_server.addrlen) {
- if (ctx->mountfamily != ctx->mount_server.address.ss_family)
+ if (ctx->mountfamily != ctx->mount_server.address.sa_family)
goto out_mountproto_mismatch;
} else {
- if (ctx->mountfamily != ctx->nfs_server.address.ss_family)
+ if (ctx->mountfamily != ctx->nfs_server.address.sa_family)
goto out_mountproto_mismatch;
}
}
@@ -995,9 +981,9 @@ int nfs_parse_mount_options(char *raw, struct nfs_fs_context *ctx)
*
* Note: caller frees hostname and export path, even on error.
*/
-static int nfs_parse_devname(const char *dev_name,
- char **hostname, size_t maxnamlen,
- char **export_path, size_t maxpathlen)
+static int nfs_parse_devname(struct nfs_fs_context *ctx,
+ const char *dev_name,
+ size_t maxnamlen, size_t maxpathlen)
{
size_t len;
char *end;
@@ -1033,17 +1019,17 @@ static int nfs_parse_devname(const char *dev_name,
goto out_hostname;
/* N.B. caller will free nfs_server.hostname in all cases */
- *hostname = kstrndup(dev_name, len, GFP_KERNEL);
- if (*hostname == NULL)
+ ctx->nfs_server.hostname = kmemdup_nul(dev_name, len, GFP_KERNEL);
+ if (!ctx->nfs_server.hostname)
goto out_nomem;
len = strlen(++end);
if (len > maxpathlen)
goto out_path;
- *export_path = kstrndup(end, len, GFP_KERNEL);
- if (!*export_path)
+ ctx->nfs_server.export_path = kmemdup_nul(end, len, GFP_KERNEL);
+ if (!ctx->nfs_server.export_path)
goto out_nomem;
- dfprintk(MOUNT, "NFS: MNTPATH: '%s'\n", *export_path);
+ dfprintk(MOUNT, "NFS: MNTPATH: '%s'\n", ctx->nfs_server.export_path);
return 0;
out_bad_devname:
@@ -1064,7 +1050,7 @@ static int nfs_parse_devname(const char *dev_name,
}
/*
- * Validate the NFS2/NFS3 mount data
+ * Parse monolithic NFS2/NFS3 mount data
* - fills in the mount root filehandle
*
* For option strings, user space handles the following behaviors:
@@ -1393,11 +1379,7 @@ int nfs_validate_text_mount_data(void *options,
nfs_set_port(sap, &ctx->nfs_server.port, port);
- return nfs_parse_devname(dev_name,
- &ctx->nfs_server.hostname,
- max_namelen,
- &ctx->nfs_server.export_path,
- max_pathlen);
+ return nfs_parse_devname(ctx, dev_name, max_namelen, max_pathlen);
#if !IS_ENABLED(CONFIG_NFS_V4)
out_v4_not_compiled:
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 7afc9dd009fc..06aae88a8fa1 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -82,11 +82,11 @@ struct nfs_client_initdata {
* In-kernel mount arguments
*/
struct nfs_fs_context {
- int flags;
+ unsigned int flags; /* NFS{,4}_MOUNT_* flags */
unsigned int rsize, wsize;
unsigned int timeo, retrans;
- unsigned int acregmin, acregmax,
- acdirmin, acdirmax;
+ unsigned int acregmin, acregmax;
+ unsigned int acdirmin, acdirmax;
unsigned int namlen;
unsigned int options;
unsigned int bsize;
@@ -102,7 +102,10 @@ struct nfs_fs_context {
bool sloppy;
struct {
- struct sockaddr_storage address;
+ union {
+ struct sockaddr address;
+ struct sockaddr_storage _address;
+ };
size_t addrlen;
char *hostname;
u32 version;
@@ -111,7 +114,10 @@ struct nfs_fs_context {
} mount_server;
struct {
- struct sockaddr_storage address;
+ union {
+ struct sockaddr address;
+ struct sockaddr_storage _address;
+ };
size_t addrlen;
char *hostname;
char *export_path;
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 3ec46d804bf2..296079b7d439 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -816,7 +816,7 @@ static int nfs_request_mount(struct nfs_fs_context *cfg,
/*
* Construct the mount server's address.
*/
- if (cfg->mount_server.address.ss_family == AF_UNSPEC) {
+ if (cfg->mount_server.address.sa_family == AF_UNSPEC) {
memcpy(request.sap, &cfg->nfs_server.address,
cfg->nfs_server.addrlen);
cfg->mount_server.addrlen = cfg->nfs_server.addrlen;
--
2.17.2
From: Al Viro <[email protected]>
Make it static, even. And remove a stale extern of (long-gone)
nfs_xdev_mount_common() from internal.h, while we are at it.
Reviewed-by: David Howells <[email protected]>
Signed-off-by: Al Viro <[email protected]>
---
fs/nfs/internal.h | 3 ---
fs/nfs/super.c | 5 +++--
2 files changed, 3 insertions(+), 5 deletions(-)
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 8f64f2fcc430..dc896602d588 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -396,10 +396,7 @@ bool nfs_auth_info_match(const struct nfs_auth_info *, rpc_authflavor_t);
struct dentry *nfs_try_mount(int, const char *, struct nfs_mount_info *);
int nfs_set_sb_security(struct super_block *, struct dentry *, struct nfs_mount_info *);
int nfs_clone_sb_security(struct super_block *, struct dentry *, struct nfs_mount_info *);
-struct dentry *nfs_fs_mount_common(int, const char *, struct nfs_mount_info *);
struct dentry *nfs_fs_mount(struct file_system_type *, int, const char *, void *);
-struct dentry * nfs_xdev_mount_common(struct file_system_type *, int,
- const char *, struct nfs_mount_info *);
void nfs_kill_super(struct super_block *);
void nfs_fill_super(struct super_block *, struct nfs_mount_info *);
void nfs_clone_super(struct super_block *, struct nfs_mount_info *);
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 6a27bd501f3f..1587c505cc23 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -1893,6 +1893,8 @@ static struct nfs_server *nfs_try_mount_request(struct nfs_mount_info *mount_inf
return nfs_mod->rpc_ops->create_server(mount_info, nfs_mod);
}
+static struct dentry *nfs_fs_mount_common(int, const char *, struct nfs_mount_info *);
+
struct dentry *nfs_try_mount(int flags, const char *dev_name,
struct nfs_mount_info *mount_info)
{
@@ -2648,7 +2650,7 @@ static void nfs_set_readahead(struct backing_dev_info *bdi,
bdi->io_pages = iomax_pages;
}
-struct dentry *nfs_fs_mount_common(int flags, const char *dev_name,
+static struct dentry *nfs_fs_mount_common(int flags, const char *dev_name,
struct nfs_mount_info *mount_info)
{
struct super_block *s;
@@ -2730,7 +2732,6 @@ struct dentry *nfs_fs_mount_common(int flags, const char *dev_name,
deactivate_locked_super(s);
goto out;
}
-EXPORT_SYMBOL_GPL(nfs_fs_mount_common);
struct dentry *nfs_fs_mount(struct file_system_type *fs_type,
int flags, const char *dev_name, void *raw_data)
--
2.17.2
From: David Howells <[email protected]>
Deindent nfs_fs_context_parse_option().
Signed-off-by: David Howells <[email protected]>
Signed-off-by: Al Viro <[email protected]>
---
fs/nfs/fs_context.c | 739 ++++++++++++++++++++++----------------------
1 file changed, 367 insertions(+), 372 deletions(-)
diff --git a/fs/nfs/fs_context.c b/fs/nfs/fs_context.c
index 3ad8fc68e623..e2b584354731 100644
--- a/fs/nfs/fs_context.c
+++ b/fs/nfs/fs_context.c
@@ -500,410 +500,405 @@ static int nfs_get_option_ul_bound(substring_t args[], unsigned long *option,
*/
static int nfs_fs_context_parse_option(struct nfs_fs_context *ctx, char *p)
{
+ substring_t args[MAX_OPT_ARGS];
+ unsigned long option;
char *string;
- int rc;
-
- {
- substring_t args[MAX_OPT_ARGS];
- unsigned long option;
- int token;
+ int token, rc;
- dfprintk(MOUNT, "NFS: parsing nfs mount option '%s'\n", p);
-
- token = match_token(p, nfs_mount_option_tokens, args);
- switch (token) {
+ dfprintk(MOUNT, "NFS: parsing nfs mount option '%s'\n", p);
+ token = match_token(p, nfs_mount_option_tokens, args);
+ switch (token) {
/*
* boolean options: foo/nofoo
*/
- case Opt_soft:
- ctx->flags |= NFS_MOUNT_SOFT;
- ctx->flags &= ~NFS_MOUNT_SOFTERR;
- break;
- case Opt_softerr:
- ctx->flags |= NFS_MOUNT_SOFTERR;
- ctx->flags &= ~NFS_MOUNT_SOFT;
- break;
- case Opt_hard:
- ctx->flags &= ~(NFS_MOUNT_SOFT|NFS_MOUNT_SOFTERR);
- break;
- case Opt_posix:
- ctx->flags |= NFS_MOUNT_POSIX;
- break;
- case Opt_noposix:
- ctx->flags &= ~NFS_MOUNT_POSIX;
- break;
- case Opt_cto:
- ctx->flags &= ~NFS_MOUNT_NOCTO;
- break;
- case Opt_nocto:
- ctx->flags |= NFS_MOUNT_NOCTO;
- break;
- case Opt_ac:
- ctx->flags &= ~NFS_MOUNT_NOAC;
- break;
- case Opt_noac:
- ctx->flags |= NFS_MOUNT_NOAC;
- break;
- case Opt_lock:
- ctx->flags &= ~NFS_MOUNT_NONLM;
- ctx->flags &= ~(NFS_MOUNT_LOCAL_FLOCK |
- NFS_MOUNT_LOCAL_FCNTL);
- break;
- case Opt_nolock:
- ctx->flags |= NFS_MOUNT_NONLM;
- ctx->flags |= (NFS_MOUNT_LOCAL_FLOCK |
- NFS_MOUNT_LOCAL_FCNTL);
- break;
- case Opt_udp:
- ctx->flags &= ~NFS_MOUNT_TCP;
- ctx->nfs_server.protocol = XPRT_TRANSPORT_UDP;
- break;
- case Opt_tcp:
- ctx->flags |= NFS_MOUNT_TCP;
- ctx->nfs_server.protocol = XPRT_TRANSPORT_TCP;
- break;
- case Opt_rdma:
- ctx->flags |= NFS_MOUNT_TCP; /* for side protocols */
- ctx->nfs_server.protocol = XPRT_TRANSPORT_RDMA;
- xprt_load_transport(p);
- break;
- case Opt_acl:
- ctx->flags &= ~NFS_MOUNT_NOACL;
- break;
- case Opt_noacl:
- ctx->flags |= NFS_MOUNT_NOACL;
- break;
- case Opt_rdirplus:
- ctx->flags &= ~NFS_MOUNT_NORDIRPLUS;
- break;
- case Opt_nordirplus:
- ctx->flags |= NFS_MOUNT_NORDIRPLUS;
- break;
- case Opt_sharecache:
- ctx->flags &= ~NFS_MOUNT_UNSHARED;
- break;
- case Opt_nosharecache:
- ctx->flags |= NFS_MOUNT_UNSHARED;
- break;
- case Opt_resvport:
- ctx->flags &= ~NFS_MOUNT_NORESVPORT;
- break;
- case Opt_noresvport:
- ctx->flags |= NFS_MOUNT_NORESVPORT;
- break;
- case Opt_fscache:
- ctx->options |= NFS_OPTION_FSCACHE;
- kfree(ctx->fscache_uniq);
- ctx->fscache_uniq = NULL;
- break;
- case Opt_nofscache:
- ctx->options &= ~NFS_OPTION_FSCACHE;
- kfree(ctx->fscache_uniq);
- ctx->fscache_uniq = NULL;
- break;
- case Opt_migration:
- ctx->options |= NFS_OPTION_MIGRATION;
- break;
- case Opt_nomigration:
- ctx->options &= ~NFS_OPTION_MIGRATION;
- break;
+ case Opt_soft:
+ ctx->flags |= NFS_MOUNT_SOFT;
+ ctx->flags &= ~NFS_MOUNT_SOFTERR;
+ break;
+ case Opt_softerr:
+ ctx->flags |= NFS_MOUNT_SOFTERR;
+ ctx->flags &= ~NFS_MOUNT_SOFT;
+ break;
+ case Opt_hard:
+ ctx->flags &= ~(NFS_MOUNT_SOFT|NFS_MOUNT_SOFTERR);
+ break;
+ case Opt_posix:
+ ctx->flags |= NFS_MOUNT_POSIX;
+ break;
+ case Opt_noposix:
+ ctx->flags &= ~NFS_MOUNT_POSIX;
+ break;
+ case Opt_cto:
+ ctx->flags &= ~NFS_MOUNT_NOCTO;
+ break;
+ case Opt_nocto:
+ ctx->flags |= NFS_MOUNT_NOCTO;
+ break;
+ case Opt_ac:
+ ctx->flags &= ~NFS_MOUNT_NOAC;
+ break;
+ case Opt_noac:
+ ctx->flags |= NFS_MOUNT_NOAC;
+ break;
+ case Opt_lock:
+ ctx->flags &= ~NFS_MOUNT_NONLM;
+ ctx->flags &= ~(NFS_MOUNT_LOCAL_FLOCK |
+ NFS_MOUNT_LOCAL_FCNTL);
+ break;
+ case Opt_nolock:
+ ctx->flags |= NFS_MOUNT_NONLM;
+ ctx->flags |= (NFS_MOUNT_LOCAL_FLOCK |
+ NFS_MOUNT_LOCAL_FCNTL);
+ break;
+ case Opt_udp:
+ ctx->flags &= ~NFS_MOUNT_TCP;
+ ctx->nfs_server.protocol = XPRT_TRANSPORT_UDP;
+ break;
+ case Opt_tcp:
+ ctx->flags |= NFS_MOUNT_TCP;
+ ctx->nfs_server.protocol = XPRT_TRANSPORT_TCP;
+ break;
+ case Opt_rdma:
+ ctx->flags |= NFS_MOUNT_TCP; /* for side protocols */
+ ctx->nfs_server.protocol = XPRT_TRANSPORT_RDMA;
+ xprt_load_transport(p);
+ break;
+ case Opt_acl:
+ ctx->flags &= ~NFS_MOUNT_NOACL;
+ break;
+ case Opt_noacl:
+ ctx->flags |= NFS_MOUNT_NOACL;
+ break;
+ case Opt_rdirplus:
+ ctx->flags &= ~NFS_MOUNT_NORDIRPLUS;
+ break;
+ case Opt_nordirplus:
+ ctx->flags |= NFS_MOUNT_NORDIRPLUS;
+ break;
+ case Opt_sharecache:
+ ctx->flags &= ~NFS_MOUNT_UNSHARED;
+ break;
+ case Opt_nosharecache:
+ ctx->flags |= NFS_MOUNT_UNSHARED;
+ break;
+ case Opt_resvport:
+ ctx->flags &= ~NFS_MOUNT_NORESVPORT;
+ break;
+ case Opt_noresvport:
+ ctx->flags |= NFS_MOUNT_NORESVPORT;
+ break;
+ case Opt_fscache:
+ ctx->options |= NFS_OPTION_FSCACHE;
+ kfree(ctx->fscache_uniq);
+ ctx->fscache_uniq = NULL;
+ break;
+ case Opt_nofscache:
+ ctx->options &= ~NFS_OPTION_FSCACHE;
+ kfree(ctx->fscache_uniq);
+ ctx->fscache_uniq = NULL;
+ break;
+ case Opt_migration:
+ ctx->options |= NFS_OPTION_MIGRATION;
+ break;
+ case Opt_nomigration:
+ ctx->options &= ~NFS_OPTION_MIGRATION;
+ break;
/*
* options that take numeric values
*/
- case Opt_port:
- if (nfs_get_option_ul(args, &option) ||
- option > USHRT_MAX)
- goto out_invalid_value;
- ctx->nfs_server.port = option;
- break;
- case Opt_rsize:
- if (nfs_get_option_ul(args, &option))
- goto out_invalid_value;
- ctx->rsize = option;
- break;
- case Opt_wsize:
- if (nfs_get_option_ul(args, &option))
- goto out_invalid_value;
- ctx->wsize = option;
- break;
- case Opt_bsize:
- if (nfs_get_option_ul(args, &option))
- goto out_invalid_value;
- ctx->bsize = option;
- break;
- case Opt_timeo:
- if (nfs_get_option_ul_bound(args, &option, 1, INT_MAX))
- goto out_invalid_value;
- ctx->timeo = option;
- break;
- case Opt_retrans:
- if (nfs_get_option_ul_bound(args, &option, 0, INT_MAX))
- goto out_invalid_value;
- ctx->retrans = option;
- break;
- case Opt_acregmin:
- if (nfs_get_option_ul(args, &option))
- goto out_invalid_value;
- ctx->acregmin = option;
- break;
- case Opt_acregmax:
- if (nfs_get_option_ul(args, &option))
- goto out_invalid_value;
- ctx->acregmax = option;
- break;
- case Opt_acdirmin:
- if (nfs_get_option_ul(args, &option))
- goto out_invalid_value;
- ctx->acdirmin = option;
- break;
- case Opt_acdirmax:
- if (nfs_get_option_ul(args, &option))
- goto out_invalid_value;
- ctx->acdirmax = option;
- break;
- case Opt_actimeo:
- if (nfs_get_option_ul(args, &option))
- goto out_invalid_value;
- ctx->acregmin = ctx->acregmax =
+ case Opt_port:
+ if (nfs_get_option_ul(args, &option) ||
+ option > USHRT_MAX)
+ goto out_invalid_value;
+ ctx->nfs_server.port = option;
+ break;
+ case Opt_rsize:
+ if (nfs_get_option_ul(args, &option))
+ goto out_invalid_value;
+ ctx->rsize = option;
+ break;
+ case Opt_wsize:
+ if (nfs_get_option_ul(args, &option))
+ goto out_invalid_value;
+ ctx->wsize = option;
+ break;
+ case Opt_bsize:
+ if (nfs_get_option_ul(args, &option))
+ goto out_invalid_value;
+ ctx->bsize = option;
+ break;
+ case Opt_timeo:
+ if (nfs_get_option_ul_bound(args, &option, 1, INT_MAX))
+ goto out_invalid_value;
+ ctx->timeo = option;
+ break;
+ case Opt_retrans:
+ if (nfs_get_option_ul_bound(args, &option, 0, INT_MAX))
+ goto out_invalid_value;
+ ctx->retrans = option;
+ break;
+ case Opt_acregmin:
+ if (nfs_get_option_ul(args, &option))
+ goto out_invalid_value;
+ ctx->acregmin = option;
+ break;
+ case Opt_acregmax:
+ if (nfs_get_option_ul(args, &option))
+ goto out_invalid_value;
+ ctx->acregmax = option;
+ break;
+ case Opt_acdirmin:
+ if (nfs_get_option_ul(args, &option))
+ goto out_invalid_value;
+ ctx->acdirmin = option;
+ break;
+ case Opt_acdirmax:
+ if (nfs_get_option_ul(args, &option))
+ goto out_invalid_value;
+ ctx->acdirmax = option;
+ break;
+ case Opt_actimeo:
+ if (nfs_get_option_ul(args, &option))
+ goto out_invalid_value;
+ ctx->acregmin = ctx->acregmax =
ctx->acdirmin = ctx->acdirmax = option;
- break;
- case Opt_namelen:
- if (nfs_get_option_ul(args, &option))
- goto out_invalid_value;
- ctx->namlen = option;
- break;
- case Opt_mountport:
- if (nfs_get_option_ul(args, &option) ||
- option > USHRT_MAX)
- goto out_invalid_value;
- ctx->mount_server.port = option;
- break;
- case Opt_mountvers:
- if (nfs_get_option_ul(args, &option) ||
- option < NFS_MNT_VERSION ||
- option > NFS_MNT3_VERSION)
- goto out_invalid_value;
- ctx->mount_server.version = option;
- break;
- case Opt_minorversion:
- if (nfs_get_option_ul(args, &option))
- goto out_invalid_value;
- if (option > NFS4_MAX_MINOR_VERSION)
- goto out_invalid_value;
- ctx->minorversion = option;
- break;
+ break;
+ case Opt_namelen:
+ if (nfs_get_option_ul(args, &option))
+ goto out_invalid_value;
+ ctx->namlen = option;
+ break;
+ case Opt_mountport:
+ if (nfs_get_option_ul(args, &option) ||
+ option > USHRT_MAX)
+ goto out_invalid_value;
+ ctx->mount_server.port = option;
+ break;
+ case Opt_mountvers:
+ if (nfs_get_option_ul(args, &option) ||
+ option < NFS_MNT_VERSION ||
+ option > NFS_MNT3_VERSION)
+ goto out_invalid_value;
+ ctx->mount_server.version = option;
+ break;
+ case Opt_minorversion:
+ if (nfs_get_option_ul(args, &option))
+ goto out_invalid_value;
+ if (option > NFS4_MAX_MINOR_VERSION)
+ goto out_invalid_value;
+ ctx->minorversion = option;
+ break;
/*
* options that take text values
*/
- case Opt_nfsvers:
- string = match_strdup(args);
- if (string == NULL)
- goto out_nomem;
- rc = nfs_parse_version_string(string, ctx, args);
- kfree(string);
- if (!rc)
- goto out_invalid_value;
+ case Opt_nfsvers:
+ string = match_strdup(args);
+ if (string == NULL)
+ goto out_nomem;
+ rc = nfs_parse_version_string(string, ctx, args);
+ kfree(string);
+ if (!rc)
+ goto out_invalid_value;
+ break;
+ case Opt_sec:
+ string = match_strdup(args);
+ if (string == NULL)
+ goto out_nomem;
+ rc = nfs_parse_security_flavors(string, ctx);
+ kfree(string);
+ if (!rc) {
+ dfprintk(MOUNT, "NFS: unrecognized "
+ "security flavor\n");
+ return -EINVAL;
+ }
+ break;
+ case Opt_proto:
+ string = match_strdup(args);
+ if (string == NULL)
+ goto out_nomem;
+ token = match_token(string,
+ nfs_xprt_protocol_tokens, args);
+
+ ctx->protofamily = AF_INET;
+ switch (token) {
+ case Opt_xprt_udp6:
+ ctx->protofamily = AF_INET6;
+ /* fall through */
+ case Opt_xprt_udp:
+ ctx->flags &= ~NFS_MOUNT_TCP;
+ ctx->nfs_server.protocol = XPRT_TRANSPORT_UDP;
break;
- case Opt_sec:
- string = match_strdup(args);
- if (string == NULL)
- goto out_nomem;
- rc = nfs_parse_security_flavors(string, ctx);
- kfree(string);
- if (!rc) {
- dfprintk(MOUNT, "NFS: unrecognized "
- "security flavor\n");
- return -EINVAL;
- }
+ case Opt_xprt_tcp6:
+ ctx->protofamily = AF_INET6;
+ /* fall through */
+ case Opt_xprt_tcp:
+ ctx->flags |= NFS_MOUNT_TCP;
+ ctx->nfs_server.protocol = XPRT_TRANSPORT_TCP;
break;
- case Opt_proto:
- string = match_strdup(args);
- if (string == NULL)
- goto out_nomem;
- token = match_token(string,
- nfs_xprt_protocol_tokens, args);
-
- ctx->protofamily = AF_INET;
- switch (token) {
- case Opt_xprt_udp6:
- ctx->protofamily = AF_INET6;
- /* fall through */
- case Opt_xprt_udp:
- ctx->flags &= ~NFS_MOUNT_TCP;
- ctx->nfs_server.protocol = XPRT_TRANSPORT_UDP;
- break;
- case Opt_xprt_tcp6:
- ctx->protofamily = AF_INET6;
- /* fall through */
- case Opt_xprt_tcp:
- ctx->flags |= NFS_MOUNT_TCP;
- ctx->nfs_server.protocol = XPRT_TRANSPORT_TCP;
- break;
- case Opt_xprt_rdma6:
- ctx->protofamily = AF_INET6;
- /* fall through */
- case Opt_xprt_rdma:
- /* vector side protocols to TCP */
- ctx->flags |= NFS_MOUNT_TCP;
- ctx->nfs_server.protocol = XPRT_TRANSPORT_RDMA;
- xprt_load_transport(string);
- break;
- default:
- dfprintk(MOUNT, "NFS: unrecognized "
- "transport protocol\n");
- kfree(string);
- return -EINVAL;
- }
- kfree(string);
+ case Opt_xprt_rdma6:
+ ctx->protofamily = AF_INET6;
+ /* fall through */
+ case Opt_xprt_rdma:
+ /* vector side protocols to TCP */
+ ctx->flags |= NFS_MOUNT_TCP;
+ ctx->nfs_server.protocol = XPRT_TRANSPORT_RDMA;
+ xprt_load_transport(string);
break;
- case Opt_mountproto:
- string = match_strdup(args);
- if (string == NULL)
- goto out_nomem;
- token = match_token(string,
- nfs_xprt_protocol_tokens, args);
+ default:
+ dfprintk(MOUNT, "NFS: unrecognized "
+ "transport protocol\n");
kfree(string);
+ return -EINVAL;
+ }
+ kfree(string);
+ break;
+ case Opt_mountproto:
+ string = match_strdup(args);
+ if (string == NULL)
+ goto out_nomem;
+ token = match_token(string,
+ nfs_xprt_protocol_tokens, args);
+ kfree(string);
- ctx->mountfamily = AF_INET;
- switch (token) {
- case Opt_xprt_udp6:
- ctx->mountfamily = AF_INET6;
- /* fall through */
- case Opt_xprt_udp:
- ctx->mount_server.protocol = XPRT_TRANSPORT_UDP;
- break;
- case Opt_xprt_tcp6:
- ctx->mountfamily = AF_INET6;
- /* fall through */
- case Opt_xprt_tcp:
- ctx->mount_server.protocol = XPRT_TRANSPORT_TCP;
- break;
- case Opt_xprt_rdma: /* not used for side protocols */
- default:
- dfprintk(MOUNT, "NFS: unrecognized "
- "transport protocol\n");
- return -EINVAL;
- }
- break;
- case Opt_addr:
- string = match_strdup(args);
- if (string == NULL)
- goto out_nomem;
- ctx->nfs_server.addrlen =
- rpc_pton(ctx->net, string, strlen(string),
- (struct sockaddr *)
- &ctx->nfs_server.address,
- sizeof(ctx->nfs_server.address));
- kfree(string);
- if (ctx->nfs_server.addrlen == 0)
- goto out_invalid_address;
- break;
- case Opt_clientaddr:
- if (nfs_get_option_str(args, &ctx->client_address))
- goto out_nomem;
+ ctx->mountfamily = AF_INET;
+ switch (token) {
+ case Opt_xprt_udp6:
+ ctx->mountfamily = AF_INET6;
+ /* fall through */
+ case Opt_xprt_udp:
+ ctx->mount_server.protocol = XPRT_TRANSPORT_UDP;
+ break;
+ case Opt_xprt_tcp6:
+ ctx->mountfamily = AF_INET6;
+ /* fall through */
+ case Opt_xprt_tcp:
+ ctx->mount_server.protocol = XPRT_TRANSPORT_TCP;
+ break;
+ case Opt_xprt_rdma: /* not used for side protocols */
+ default:
+ dfprintk(MOUNT, "NFS: unrecognized "
+ "transport protocol\n");
+ return -EINVAL;
+ }
+ break;
+ case Opt_addr:
+ string = match_strdup(args);
+ if (string == NULL)
+ goto out_nomem;
+ ctx->nfs_server.addrlen =
+ rpc_pton(ctx->net, string, strlen(string),
+ (struct sockaddr *)
+ &ctx->nfs_server.address,
+ sizeof(ctx->nfs_server.address));
+ kfree(string);
+ if (ctx->nfs_server.addrlen == 0)
+ goto out_invalid_address;
+ break;
+ case Opt_clientaddr:
+ if (nfs_get_option_str(args, &ctx->client_address))
+ goto out_nomem;
+ break;
+ case Opt_mounthost:
+ if (nfs_get_option_str(args,
+ &ctx->mount_server.hostname))
+ goto out_nomem;
+ break;
+ case Opt_mountaddr:
+ string = match_strdup(args);
+ if (string == NULL)
+ goto out_nomem;
+ ctx->mount_server.addrlen =
+ rpc_pton(ctx->net, string, strlen(string),
+ (struct sockaddr *)
+ &ctx->mount_server.address,
+ sizeof(ctx->mount_server.address));
+ kfree(string);
+ if (ctx->mount_server.addrlen == 0)
+ goto out_invalid_address;
+ break;
+ case Opt_nconnect:
+ if (nfs_get_option_ul_bound(args, &option, 1, NFS_MAX_CONNECTIONS))
+ goto out_invalid_value;
+ ctx->nfs_server.nconnect = option;
+ break;
+ case Opt_lookupcache:
+ string = match_strdup(args);
+ if (string == NULL)
+ goto out_nomem;
+ token = match_token(string,
+ nfs_lookupcache_tokens, args);
+ kfree(string);
+ switch (token) {
+ case Opt_lookupcache_all:
+ ctx->flags &= ~(NFS_MOUNT_LOOKUP_CACHE_NONEG|NFS_MOUNT_LOOKUP_CACHE_NONE);
break;
- case Opt_mounthost:
- if (nfs_get_option_str(args,
- &ctx->mount_server.hostname))
- goto out_nomem;
+ case Opt_lookupcache_positive:
+ ctx->flags &= ~NFS_MOUNT_LOOKUP_CACHE_NONE;
+ ctx->flags |= NFS_MOUNT_LOOKUP_CACHE_NONEG;
break;
- case Opt_mountaddr:
- string = match_strdup(args);
- if (string == NULL)
- goto out_nomem;
- ctx->mount_server.addrlen =
- rpc_pton(ctx->net, string, strlen(string),
- (struct sockaddr *)
- &ctx->mount_server.address,
- sizeof(ctx->mount_server.address));
- kfree(string);
- if (ctx->mount_server.addrlen == 0)
- goto out_invalid_address;
+ case Opt_lookupcache_none:
+ ctx->flags |= NFS_MOUNT_LOOKUP_CACHE_NONEG|NFS_MOUNT_LOOKUP_CACHE_NONE;
break;
- case Opt_nconnect:
- if (nfs_get_option_ul_bound(args, &option, 1, NFS_MAX_CONNECTIONS))
- goto out_invalid_value;
- ctx->nfs_server.nconnect = option;
+ default:
+ dfprintk(MOUNT, "NFS: invalid "
+ "lookupcache argument\n");
+ return -EINVAL;
+ };
+ break;
+ case Opt_fscache_uniq:
+ if (nfs_get_option_str(args, &ctx->fscache_uniq))
+ goto out_nomem;
+ ctx->options |= NFS_OPTION_FSCACHE;
+ break;
+ case Opt_local_lock:
+ string = match_strdup(args);
+ if (string == NULL)
+ goto out_nomem;
+ token = match_token(string, nfs_local_lock_tokens,
+ args);
+ kfree(string);
+ switch (token) {
+ case Opt_local_lock_all:
+ ctx->flags |= (NFS_MOUNT_LOCAL_FLOCK |
+ NFS_MOUNT_LOCAL_FCNTL);
break;
- case Opt_lookupcache:
- string = match_strdup(args);
- if (string == NULL)
- goto out_nomem;
- token = match_token(string,
- nfs_lookupcache_tokens, args);
- kfree(string);
- switch (token) {
- case Opt_lookupcache_all:
- ctx->flags &= ~(NFS_MOUNT_LOOKUP_CACHE_NONEG|NFS_MOUNT_LOOKUP_CACHE_NONE);
- break;
- case Opt_lookupcache_positive:
- ctx->flags &= ~NFS_MOUNT_LOOKUP_CACHE_NONE;
- ctx->flags |= NFS_MOUNT_LOOKUP_CACHE_NONEG;
- break;
- case Opt_lookupcache_none:
- ctx->flags |= NFS_MOUNT_LOOKUP_CACHE_NONEG|NFS_MOUNT_LOOKUP_CACHE_NONE;
- break;
- default:
- dfprintk(MOUNT, "NFS: invalid "
- "lookupcache argument\n");
- return -EINVAL;
- };
+ case Opt_local_lock_flock:
+ ctx->flags |= NFS_MOUNT_LOCAL_FLOCK;
break;
- case Opt_fscache_uniq:
- if (nfs_get_option_str(args, &ctx->fscache_uniq))
- goto out_nomem;
- ctx->options |= NFS_OPTION_FSCACHE;
+ case Opt_local_lock_posix:
+ ctx->flags |= NFS_MOUNT_LOCAL_FCNTL;
break;
- case Opt_local_lock:
- string = match_strdup(args);
- if (string == NULL)
- goto out_nomem;
- token = match_token(string, nfs_local_lock_tokens,
- args);
- kfree(string);
- switch (token) {
- case Opt_local_lock_all:
- ctx->flags |= (NFS_MOUNT_LOCAL_FLOCK |
- NFS_MOUNT_LOCAL_FCNTL);
- break;
- case Opt_local_lock_flock:
- ctx->flags |= NFS_MOUNT_LOCAL_FLOCK;
- break;
- case Opt_local_lock_posix:
- ctx->flags |= NFS_MOUNT_LOCAL_FCNTL;
- break;
- case Opt_local_lock_none:
- ctx->flags &= ~(NFS_MOUNT_LOCAL_FLOCK |
- NFS_MOUNT_LOCAL_FCNTL);
- break;
- default:
- dfprintk(MOUNT, "NFS: invalid "
- "local_lock argument\n");
- return -EINVAL;
- };
+ case Opt_local_lock_none:
+ ctx->flags &= ~(NFS_MOUNT_LOCAL_FLOCK |
+ NFS_MOUNT_LOCAL_FCNTL);
break;
+ default:
+ dfprintk(MOUNT, "NFS: invalid "
+ "local_lock argument\n");
+ return -EINVAL;
+ };
+ break;
/*
* Special options
*/
- case Opt_sloppy:
- ctx->sloppy = 1;
- dfprintk(MOUNT, "NFS: relaxing parsing rules\n");
- break;
- case Opt_userspace:
- case Opt_deprecated:
- dfprintk(MOUNT, "NFS: ignoring mount option "
- "'%s'\n", p);
- break;
+ case Opt_sloppy:
+ ctx->sloppy = 1;
+ dfprintk(MOUNT, "NFS: relaxing parsing rules\n");
+ break;
+ case Opt_userspace:
+ case Opt_deprecated:
+ dfprintk(MOUNT, "NFS: ignoring mount option "
+ "'%s'\n", p);
+ break;
- default:
- dfprintk(MOUNT, "NFS: unrecognized mount option "
- "'%s'\n", p);
- return -EINVAL;
- }
+ default:
+ dfprintk(MOUNT, "NFS: unrecognized mount option "
+ "'%s'\n", p);
+ return -EINVAL;
}
return 0;
--
2.17.2
From: Al Viro <[email protected]>
nothing in it will be looking at that thing anyway
Reviewed-by: David Howells <[email protected]>
Signed-off-by: Al Viro <[email protected]>
---
fs/nfs/nfs4super.c | 4 ----
1 file changed, 4 deletions(-)
diff --git a/fs/nfs/nfs4super.c b/fs/nfs/nfs4super.c
index d0237d8ffa2b..a0b66f98f6ba 100644
--- a/fs/nfs/nfs4super.c
+++ b/fs/nfs/nfs4super.c
@@ -233,12 +233,10 @@ struct dentry *nfs4_try_mount(int flags, const char *dev_name,
dfprintk(MOUNT, "--> nfs4_try_mount()\n");
export_path = data->nfs_server.export_path;
- data->nfs_server.export_path = "/";
root_mnt = nfs_do_root_mount(
nfs4_create_server(mount_info, &nfs_v4),
flags, mount_info,
data->nfs_server.hostname);
- data->nfs_server.export_path = export_path;
res = nfs_follow_remote_path(root_mnt, export_path);
@@ -271,12 +269,10 @@ static struct dentry *nfs4_referral_mount(struct file_system_type *fs_type,
return ERR_PTR(-ENOMEM);
export_path = data->mnt_path;
- data->mnt_path = "/";
root_mnt = nfs_do_root_mount(
nfs4_create_referral_server(mount_info.cloned,
mount_info.mntfh),
flags, &mount_info, data->hostname);
- data->mnt_path = export_path;
res = nfs_follow_remote_path(root_mnt, export_path);
dprintk("<-- nfs4_referral_mount() = %d%s\n",
--
2.17.2
From: David Howells <[email protected]>
Add a small buffer in nfs_fs_context to avoid string duplication when
parsing numbers. Also make the parsing function wrapper place the parsed
integer directly in the appropriate nfs_fs_context struct member.
Signed-off-by: David Howells <[email protected]>
Signed-off-by: Al Viro <[email protected]>
---
fs/nfs/fs_context.c | 98 +++++++++++++++++++++------------------------
fs/nfs/internal.h | 2 +
2 files changed, 48 insertions(+), 52 deletions(-)
diff --git a/fs/nfs/fs_context.c b/fs/nfs/fs_context.c
index e2b584354731..ad502b37a3f3 100644
--- a/fs/nfs/fs_context.c
+++ b/fs/nfs/fs_context.c
@@ -468,27 +468,38 @@ static int nfs_get_option_str(substring_t args[], char **option)
return !*option;
}
-static int nfs_get_option_ul(substring_t args[], unsigned long *option)
+static int nfs_get_option_ui(struct nfs_fs_context *ctx,
+ substring_t args[], unsigned int *option)
{
- int rc;
- char *string;
+ match_strlcpy(ctx->buf, args, sizeof(ctx->buf));
+ return kstrtouint(ctx->buf, 10, option);
+}
- string = match_strdup(args);
- if (string == NULL)
- return -ENOMEM;
- rc = kstrtoul(string, 10, option);
- kfree(string);
+static int nfs_get_option_ui_bound(struct nfs_fs_context *ctx,
+ substring_t args[], unsigned int *option,
+ unsigned int l_bound, unsigned u_bound)
+{
+ int ret;
- return rc;
+ match_strlcpy(ctx->buf, args, sizeof(ctx->buf));
+ ret = kstrtouint(ctx->buf, 10, option);
+ if (ret < 0)
+ return ret;
+ if (*option < l_bound || *option > u_bound)
+ return -ERANGE;
+ return 0;
}
-static int nfs_get_option_ul_bound(substring_t args[], unsigned long *option,
- unsigned long l_bound, unsigned long u_bound)
+static int nfs_get_option_us_bound(struct nfs_fs_context *ctx,
+ substring_t args[], unsigned short *option,
+ unsigned short l_bound,
+ unsigned short u_bound)
{
int ret;
- ret = nfs_get_option_ul(args, option);
- if (ret != 0)
+ match_strlcpy(ctx->buf, args, sizeof(ctx->buf));
+ ret = kstrtou16(ctx->buf, 10, option);
+ if (ret < 0)
return ret;
if (*option < l_bound || *option > u_bound)
return -ERANGE;
@@ -501,7 +512,6 @@ static int nfs_get_option_ul_bound(substring_t args[], unsigned long *option,
static int nfs_fs_context_parse_option(struct nfs_fs_context *ctx, char *p)
{
substring_t args[MAX_OPT_ARGS];
- unsigned long option;
char *string;
int token, rc;
@@ -609,86 +619,70 @@ static int nfs_fs_context_parse_option(struct nfs_fs_context *ctx, char *p)
* options that take numeric values
*/
case Opt_port:
- if (nfs_get_option_ul(args, &option) ||
- option > USHRT_MAX)
+ if (nfs_get_option_ui_bound(ctx, args, &ctx->nfs_server.port,
+ 0, USHRT_MAX))
goto out_invalid_value;
- ctx->nfs_server.port = option;
break;
case Opt_rsize:
- if (nfs_get_option_ul(args, &option))
+ if (nfs_get_option_ui(ctx, args, &ctx->rsize))
goto out_invalid_value;
- ctx->rsize = option;
break;
case Opt_wsize:
- if (nfs_get_option_ul(args, &option))
+ if (nfs_get_option_ui(ctx, args, &ctx->wsize))
goto out_invalid_value;
- ctx->wsize = option;
break;
case Opt_bsize:
- if (nfs_get_option_ul(args, &option))
+ if (nfs_get_option_ui(ctx, args, &ctx->bsize))
goto out_invalid_value;
- ctx->bsize = option;
break;
case Opt_timeo:
- if (nfs_get_option_ul_bound(args, &option, 1, INT_MAX))
+ if (nfs_get_option_ui_bound(ctx, args, &ctx->timeo, 1, INT_MAX))
goto out_invalid_value;
- ctx->timeo = option;
break;
case Opt_retrans:
- if (nfs_get_option_ul_bound(args, &option, 0, INT_MAX))
+ if (nfs_get_option_ui_bound(ctx, args, &ctx->retrans, 0, INT_MAX))
goto out_invalid_value;
- ctx->retrans = option;
break;
case Opt_acregmin:
- if (nfs_get_option_ul(args, &option))
+ if (nfs_get_option_ui(ctx, args, &ctx->acregmin))
goto out_invalid_value;
- ctx->acregmin = option;
break;
case Opt_acregmax:
- if (nfs_get_option_ul(args, &option))
+ if (nfs_get_option_ui(ctx, args, &ctx->acregmax))
goto out_invalid_value;
- ctx->acregmax = option;
break;
case Opt_acdirmin:
- if (nfs_get_option_ul(args, &option))
+ if (nfs_get_option_ui(ctx, args, &ctx->acdirmin))
goto out_invalid_value;
- ctx->acdirmin = option;
break;
case Opt_acdirmax:
- if (nfs_get_option_ul(args, &option))
+ if (nfs_get_option_ui(ctx, args, &ctx->acdirmax))
goto out_invalid_value;
- ctx->acdirmax = option;
break;
case Opt_actimeo:
- if (nfs_get_option_ul(args, &option))
+ if (nfs_get_option_ui(ctx, args, &ctx->acdirmax))
goto out_invalid_value;
ctx->acregmin = ctx->acregmax =
- ctx->acdirmin = ctx->acdirmax = option;
+ ctx->acdirmin = ctx->acdirmax;
break;
case Opt_namelen:
- if (nfs_get_option_ul(args, &option))
+ if (nfs_get_option_ui(ctx, args, &ctx->namlen))
goto out_invalid_value;
- ctx->namlen = option;
break;
case Opt_mountport:
- if (nfs_get_option_ul(args, &option) ||
- option > USHRT_MAX)
+ if (nfs_get_option_ui_bound(ctx, args, &ctx->mount_server.port,
+ 0, USHRT_MAX))
goto out_invalid_value;
- ctx->mount_server.port = option;
break;
case Opt_mountvers:
- if (nfs_get_option_ul(args, &option) ||
- option < NFS_MNT_VERSION ||
- option > NFS_MNT3_VERSION)
+ if (nfs_get_option_ui_bound(ctx, args, &ctx->mount_server.version,
+ NFS_MNT_VERSION, NFS_MNT3_VERSION))
goto out_invalid_value;
- ctx->mount_server.version = option;
break;
case Opt_minorversion:
- if (nfs_get_option_ul(args, &option))
- goto out_invalid_value;
- if (option > NFS4_MAX_MINOR_VERSION)
+ if (nfs_get_option_ui_bound(ctx, args, &ctx->minorversion,
+ 0, NFS4_MAX_MINOR_VERSION))
goto out_invalid_value;
- ctx->minorversion = option;
break;
/*
@@ -820,9 +814,9 @@ static int nfs_fs_context_parse_option(struct nfs_fs_context *ctx, char *p)
goto out_invalid_address;
break;
case Opt_nconnect:
- if (nfs_get_option_ul_bound(args, &option, 1, NFS_MAX_CONNECTIONS))
+ if (nfs_get_option_us_bound(ctx, args, &ctx->nfs_server.nconnect,
+ 1, NFS_MAX_CONNECTIONS))
goto out_invalid_value;
- ctx->nfs_server.nconnect = option;
break;
case Opt_lookupcache:
string = match_strdup(args);
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 6e290b480fa8..7afc9dd009fc 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -122,6 +122,8 @@ struct nfs_fs_context {
void *lsm_opts;
struct net *net;
+
+ char buf[32]; /* Parse buffer */
};
/* mount_clnt.c */
--
2.17.2
Split out from commit "NFS: Add fs_context support."
Rename cfg to ctx in nfs_init_server(), nfs_verify_authflavors(),
and nfs_request_mount(). No functional changes.
Signed-off-by: Scott Mayhew <[email protected]>
---
fs/nfs/client.c | 62 ++++++++++++++++++++++++-------------------------
fs/nfs/super.c | 54 +++++++++++++++++++++---------------------
2 files changed, 58 insertions(+), 58 deletions(-)
diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index 1afd796a3706..511d1d629786 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -648,27 +648,27 @@ EXPORT_SYMBOL_GPL(nfs_init_client);
* Create a version 2 or 3 client
*/
static int nfs_init_server(struct nfs_server *server,
- const struct nfs_fs_context *cfg,
+ const struct nfs_fs_context *ctx,
struct nfs_subversion *nfs_mod)
{
struct rpc_timeout timeparms;
struct nfs_client_initdata cl_init = {
- .hostname = cfg->nfs_server.hostname,
- .addr = (const struct sockaddr *)&cfg->nfs_server.address,
- .addrlen = cfg->nfs_server.addrlen,
+ .hostname = ctx->nfs_server.hostname,
+ .addr = (const struct sockaddr *)&ctx->nfs_server.address,
+ .addrlen = ctx->nfs_server.addrlen,
.nfs_mod = nfs_mod,
- .proto = cfg->nfs_server.protocol,
- .net = cfg->net,
+ .proto = ctx->nfs_server.protocol,
+ .net = ctx->net,
.timeparms = &timeparms,
.cred = server->cred,
- .nconnect = cfg->nfs_server.nconnect,
+ .nconnect = ctx->nfs_server.nconnect,
};
struct nfs_client *clp;
int error;
- nfs_init_timeout_values(&timeparms, cfg->nfs_server.protocol,
- cfg->timeo, cfg->retrans);
- if (cfg->flags & NFS_MOUNT_NORESVPORT)
+ nfs_init_timeout_values(&timeparms, ctx->nfs_server.protocol,
+ ctx->timeo, ctx->retrans);
+ if (ctx->flags & NFS_MOUNT_NORESVPORT)
set_bit(NFS_CS_NORESVPORT, &cl_init.init_flags);
/* Allocate or find a client reference we can use */
@@ -679,46 +679,46 @@ static int nfs_init_server(struct nfs_server *server,
server->nfs_client = clp;
/* Initialise the client representation from the mount data */
- server->flags = cfg->flags;
- server->options = cfg->options;
+ server->flags = ctx->flags;
+ server->options = ctx->options;
server->caps |= NFS_CAP_HARDLINKS|NFS_CAP_SYMLINKS|NFS_CAP_FILEID|
NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER|NFS_CAP_OWNER_GROUP|
NFS_CAP_ATIME|NFS_CAP_CTIME|NFS_CAP_MTIME;
- if (cfg->rsize)
- server->rsize = nfs_block_size(cfg->rsize, NULL);
- if (cfg->wsize)
- server->wsize = nfs_block_size(cfg->wsize, NULL);
+ if (ctx->rsize)
+ server->rsize = nfs_block_size(ctx->rsize, NULL);
+ if (ctx->wsize)
+ server->wsize = nfs_block_size(ctx->wsize, NULL);
- server->acregmin = cfg->acregmin * HZ;
- server->acregmax = cfg->acregmax * HZ;
- server->acdirmin = cfg->acdirmin * HZ;
- server->acdirmax = cfg->acdirmax * HZ;
+ server->acregmin = ctx->acregmin * HZ;
+ server->acregmax = ctx->acregmax * HZ;
+ server->acdirmin = ctx->acdirmin * HZ;
+ server->acdirmax = ctx->acdirmax * HZ;
/* Start lockd here, before we might error out */
error = nfs_start_lockd(server);
if (error < 0)
goto error;
- server->port = cfg->nfs_server.port;
- server->auth_info = cfg->auth_info;
+ server->port = ctx->nfs_server.port;
+ server->auth_info = ctx->auth_info;
error = nfs_init_server_rpcclient(server, &timeparms,
- cfg->selected_flavor);
+ ctx->selected_flavor);
if (error < 0)
goto error;
/* Preserve the values of mount_server-related mount options */
- if (cfg->mount_server.addrlen) {
- memcpy(&server->mountd_address, &cfg->mount_server.address,
- cfg->mount_server.addrlen);
- server->mountd_addrlen = cfg->mount_server.addrlen;
+ if (ctx->mount_server.addrlen) {
+ memcpy(&server->mountd_address, &ctx->mount_server.address,
+ ctx->mount_server.addrlen);
+ server->mountd_addrlen = ctx->mount_server.addrlen;
}
- server->mountd_version = cfg->mount_server.version;
- server->mountd_port = cfg->mount_server.port;
- server->mountd_protocol = cfg->mount_server.protocol;
+ server->mountd_version = ctx->mount_server.version;
+ server->mountd_port = ctx->mount_server.port;
+ server->mountd_protocol = ctx->mount_server.protocol;
- server->namelen = cfg->namlen;
+ server->namelen = ctx->namlen;
return 0;
error:
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 296079b7d439..bb51618df142 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -726,11 +726,11 @@ bool nfs_auth_info_match(const struct nfs_auth_info *auth_info,
EXPORT_SYMBOL_GPL(nfs_auth_info_match);
/*
- * Ensure that a specified authtype in cfg->auth_info is supported by
- * the server. Returns 0 and sets cfg->selected_flavor if it's ok, and
+ * Ensure that a specified authtype in ctx->auth_info is supported by
+ * the server. Returns 0 and sets ctx->selected_flavor if it's ok, and
* -EACCES if not.
*/
-static int nfs_verify_authflavors(struct nfs_fs_context *cfg,
+static int nfs_verify_authflavors(struct nfs_fs_context *ctx,
rpc_authflavor_t *server_authlist,
unsigned int count)
{
@@ -753,7 +753,7 @@ static int nfs_verify_authflavors(struct nfs_fs_context *cfg,
for (i = 0; i < count; i++) {
flavor = server_authlist[i];
- if (nfs_auth_info_match(&cfg->auth_info, flavor))
+ if (nfs_auth_info_match(&ctx->auth_info, flavor))
goto out;
if (flavor == RPC_AUTH_NULL)
@@ -761,7 +761,7 @@ static int nfs_verify_authflavors(struct nfs_fs_context *cfg,
}
if (found_auth_null) {
- flavor = cfg->auth_info.flavors[0];
+ flavor = ctx->auth_info.flavors[0];
goto out;
}
@@ -770,8 +770,8 @@ static int nfs_verify_authflavors(struct nfs_fs_context *cfg,
return -EACCES;
out:
- cfg->selected_flavor = flavor;
- dfprintk(MOUNT, "NFS: using auth flavor %u\n", cfg->selected_flavor);
+ ctx->selected_flavor = flavor;
+ dfprintk(MOUNT, "NFS: using auth flavor %u\n", ctx->selected_flavor);
return 0;
}
@@ -779,50 +779,50 @@ static int nfs_verify_authflavors(struct nfs_fs_context *cfg,
* Use the remote server's MOUNT service to request the NFS file handle
* corresponding to the provided path.
*/
-static int nfs_request_mount(struct nfs_fs_context *cfg,
+static int nfs_request_mount(struct nfs_fs_context *ctx,
struct nfs_fh *root_fh,
rpc_authflavor_t *server_authlist,
unsigned int *server_authlist_len)
{
struct nfs_mount_request request = {
.sap = (struct sockaddr *)
- &cfg->mount_server.address,
- .dirpath = cfg->nfs_server.export_path,
- .protocol = cfg->mount_server.protocol,
+ &ctx->mount_server.address,
+ .dirpath = ctx->nfs_server.export_path,
+ .protocol = ctx->mount_server.protocol,
.fh = root_fh,
- .noresvport = cfg->flags & NFS_MOUNT_NORESVPORT,
+ .noresvport = ctx->flags & NFS_MOUNT_NORESVPORT,
.auth_flav_len = server_authlist_len,
.auth_flavs = server_authlist,
- .net = cfg->net,
+ .net = ctx->net,
};
int status;
- if (cfg->mount_server.version == 0) {
- switch (cfg->version) {
+ if (ctx->mount_server.version == 0) {
+ switch (ctx->version) {
default:
- cfg->mount_server.version = NFS_MNT3_VERSION;
+ ctx->mount_server.version = NFS_MNT3_VERSION;
break;
case 2:
- cfg->mount_server.version = NFS_MNT_VERSION;
+ ctx->mount_server.version = NFS_MNT_VERSION;
}
}
- request.version = cfg->mount_server.version;
+ request.version = ctx->mount_server.version;
- if (cfg->mount_server.hostname)
- request.hostname = cfg->mount_server.hostname;
+ if (ctx->mount_server.hostname)
+ request.hostname = ctx->mount_server.hostname;
else
- request.hostname = cfg->nfs_server.hostname;
+ request.hostname = ctx->nfs_server.hostname;
/*
* Construct the mount server's address.
*/
- if (cfg->mount_server.address.sa_family == AF_UNSPEC) {
- memcpy(request.sap, &cfg->nfs_server.address,
- cfg->nfs_server.addrlen);
- cfg->mount_server.addrlen = cfg->nfs_server.addrlen;
+ if (ctx->mount_server.address.sa_family == AF_UNSPEC) {
+ memcpy(request.sap, &ctx->nfs_server.address,
+ ctx->nfs_server.addrlen);
+ ctx->mount_server.addrlen = ctx->nfs_server.addrlen;
}
- request.salen = cfg->mount_server.addrlen;
- nfs_set_port(request.sap, &cfg->mount_server.port, 0);
+ request.salen = ctx->mount_server.addrlen;
+ nfs_set_port(request.sap, &ctx->mount_server.port, 0);
/*
* Now ask the mount server to map our export path
--
2.17.2
From: David Howells <[email protected]>
The mount argument match tables should never be altered so constify them.
Signed-off-by: David Howells <[email protected]>
Signed-off-by: Al Viro <[email protected]>
---
fs/nfs/fs_context.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/fs/nfs/fs_context.c b/fs/nfs/fs_context.c
index 3a34c8437917..de852177eca4 100644
--- a/fs/nfs/fs_context.c
+++ b/fs/nfs/fs_context.c
@@ -199,7 +199,7 @@ enum {
Opt_lookupcache_err
};
-static match_table_t nfs_lookupcache_tokens = {
+static const match_table_t nfs_lookupcache_tokens = {
{ Opt_lookupcache_all, "all" },
{ Opt_lookupcache_positive, "pos" },
{ Opt_lookupcache_positive, "positive" },
@@ -215,7 +215,7 @@ enum {
Opt_local_lock_err
};
-static match_table_t nfs_local_lock_tokens = {
+static const match_table_t nfs_local_lock_tokens = {
{ Opt_local_lock_all, "all" },
{ Opt_local_lock_flock, "flock" },
{ Opt_local_lock_posix, "posix" },
@@ -231,7 +231,7 @@ enum {
Opt_vers_err
};
-static match_table_t nfs_vers_tokens = {
+static const match_table_t nfs_vers_tokens = {
{ Opt_vers_2, "2" },
{ Opt_vers_3, "3" },
{ Opt_vers_4, "4" },
--
2.17.2
From: Al Viro <[email protected]>
Do it in nfs_do_submount() instead. As a side benefit, nfs_clone_data
doesn't need ->fh and ->fattr anymore.
Reviewed-by: David Howells <[email protected]>
Signed-off-by: Al Viro <[email protected]>
---
fs/nfs/internal.h | 3 +--
fs/nfs/namespace.c | 35 +++++++++++++++++++++--------------
fs/nfs/super.c | 25 ++++---------------------
3 files changed, 26 insertions(+), 37 deletions(-)
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 89b3afa8b403..8eb79f104a7d 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -34,8 +34,6 @@ static inline int nfs_attr_use_mounted_on_fileid(struct nfs_fattr *fattr)
struct nfs_clone_mount {
const struct super_block *sb;
const struct dentry *dentry;
- struct nfs_fh *fh;
- struct nfs_fattr *fattr;
char *hostname;
char *mnt_path;
struct sockaddr *addr;
@@ -405,6 +403,7 @@ struct dentry * nfs_xdev_mount_common(struct file_system_type *, int,
const char *, struct nfs_mount_info *);
void nfs_kill_super(struct super_block *);
void nfs_fill_super(struct super_block *, struct nfs_mount_info *);
+void nfs_clone_super(struct super_block *, struct nfs_mount_info *);
extern struct rpc_stat nfs_rpcstat;
diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c
index 9287eb666322..7c78e6956639 100644
--- a/fs/nfs/namespace.c
+++ b/fs/nfs/namespace.c
@@ -19,6 +19,7 @@
#include <linux/vfs.h>
#include <linux/sunrpc/gss_api.h>
#include "internal.h"
+#include "nfs.h"
#define NFSDBG_FACILITY NFSDBG_VFS
@@ -210,16 +211,6 @@ void nfs_release_automount_timer(void)
cancel_delayed_work(&nfs_automount_task);
}
-/*
- * Clone a mountpoint of the appropriate type
- */
-static struct vfsmount *nfs_do_clone_mount(struct nfs_server *server,
- const char *devname,
- struct nfs_clone_mount *mountdata)
-{
- return vfs_submount(mountdata->dentry, &nfs_xdev_fs_type, devname, mountdata);
-}
-
/**
* nfs_do_submount - set up mountpoint when crossing a filesystem boundary
* @dentry: parent directory
@@ -231,13 +222,20 @@ static struct vfsmount *nfs_do_clone_mount(struct nfs_server *server,
struct vfsmount *nfs_do_submount(struct dentry *dentry, struct nfs_fh *fh,
struct nfs_fattr *fattr, rpc_authflavor_t authflavor)
{
+ struct super_block *sb = dentry->d_sb;
struct nfs_clone_mount mountdata = {
- .sb = dentry->d_sb,
+ .sb = sb,
.dentry = dentry,
- .fh = fh,
- .fattr = fattr,
.authflavor = authflavor,
};
+ struct nfs_mount_info mount_info = {
+ .fill_super = nfs_clone_super,
+ .set_security = nfs_clone_sb_security,
+ .cloned = &mountdata,
+ .mntfh = fh,
+ };
+ struct nfs_subversion *nfs_mod = NFS_SB(sb)->nfs_client->cl_nfs_mod;
+ struct nfs_server *server;
struct vfsmount *mnt;
char *page = (char *) __get_free_page(GFP_USER);
char *devname;
@@ -245,12 +243,21 @@ struct vfsmount *nfs_do_submount(struct dentry *dentry, struct nfs_fh *fh,
if (page == NULL)
return ERR_PTR(-ENOMEM);
+ server = nfs_mod->rpc_ops->clone_server(NFS_SB(sb), fh,
+ fattr, authflavor);
+ if (IS_ERR(server))
+ return ERR_CAST(server);
+
+ mount_info.server = server;
+
devname = nfs_devname(dentry, page, PAGE_SIZE);
if (IS_ERR(devname))
mnt = ERR_CAST(devname);
else
- mnt = nfs_do_clone_mount(NFS_SB(dentry->d_sb), devname, &mountdata);
+ mnt = vfs_submount(dentry, &nfs_xdev_fs_type, devname, &mount_info);
+ if (mount_info.server)
+ nfs_free_server(mount_info.server);
free_page((unsigned long)page);
return mnt;
}
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index d57fc9983243..32d2ec237c57 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -2395,7 +2395,7 @@ EXPORT_SYMBOL_GPL(nfs_fill_super);
/*
* Finish setting up a cloned NFS2/3/4 superblock
*/
-static void nfs_clone_super(struct super_block *sb,
+void nfs_clone_super(struct super_block *sb,
struct nfs_mount_info *mount_info)
{
const struct super_block *old_sb = mount_info->cloned->sb;
@@ -2796,27 +2796,10 @@ static struct dentry *
nfs_xdev_mount(struct file_system_type *fs_type, int flags,
const char *dev_name, void *raw_data)
{
- struct nfs_clone_mount *data = raw_data;
- struct nfs_mount_info mount_info = {
- .fill_super = nfs_clone_super,
- .set_security = nfs_clone_sb_security,
- .cloned = data,
- };
- struct dentry *mntroot = ERR_PTR(-ENOMEM);
- struct nfs_subversion *nfs_mod = NFS_SB(data->sb)->nfs_client->cl_nfs_mod;
-
- dprintk("--> nfs_xdev_mount()\n");
+ struct nfs_mount_info *info = raw_data;
+ struct nfs_subversion *nfs_mod = NFS_SB(info->cloned->sb)->nfs_client->cl_nfs_mod;
- mount_info.mntfh = mount_info.cloned->fh;
-
- /* create a new volume representation */
- mount_info.server = nfs_mod->rpc_ops->clone_server(NFS_SB(data->sb), data->fh, data->fattr, data->authflavor);
-
- mntroot = nfs_fs_mount_common(flags, dev_name, &mount_info, nfs_mod);
-
- dprintk("<-- nfs_xdev_mount() = %ld\n",
- IS_ERR(mntroot) ? PTR_ERR(mntroot) : 0L);
- return mntroot;
+ return nfs_fs_mount_common(flags, dev_name, info, nfs_mod);
}
#if IS_ENABLED(CONFIG_NFS_V4)
--
2.17.2
From: Al Viro <[email protected]>
Reviewed-by: David Howells <[email protected]>
Signed-off-by: Al Viro <[email protected]>
---
fs/nfs/internal.h | 3 ++-
fs/nfs/nfs4super.c | 10 ++++------
fs/nfs/super.c | 19 ++++++++-----------
3 files changed, 14 insertions(+), 18 deletions(-)
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 447a3c17fa8e..89b3afa8b403 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -142,6 +142,7 @@ struct nfs_mount_info {
int (*set_security)(struct super_block *, struct dentry *, struct nfs_mount_info *);
struct nfs_parsed_mount_data *parsed;
struct nfs_clone_mount *cloned;
+ struct nfs_server *server;
struct nfs_fh *mntfh;
};
@@ -397,7 +398,7 @@ struct dentry *nfs_try_mount(int, const char *, struct nfs_mount_info *,
struct nfs_subversion *);
int nfs_set_sb_security(struct super_block *, struct dentry *, struct nfs_mount_info *);
int nfs_clone_sb_security(struct super_block *, struct dentry *, struct nfs_mount_info *);
-struct dentry *nfs_fs_mount_common(struct nfs_server *, int, const char *,
+struct dentry *nfs_fs_mount_common(int, const char *,
struct nfs_mount_info *, struct nfs_subversion *);
struct dentry *nfs_fs_mount(struct file_system_type *, int, const char *, void *);
struct dentry * nfs_xdev_mount_common(struct file_system_type *, int,
diff --git a/fs/nfs/nfs4super.c b/fs/nfs/nfs4super.c
index baece9857bcf..4591d6618efa 100644
--- a/fs/nfs/nfs4super.c
+++ b/fs/nfs/nfs4super.c
@@ -109,13 +109,12 @@ nfs4_remote_mount(struct file_system_type *fs_type, int flags,
const char *dev_name, void *info)
{
struct nfs_mount_info *mount_info = info;
- struct nfs_server *server;
mount_info->set_security = nfs_set_sb_security;
/* Get a volume representation */
- server = nfs4_create_server(mount_info, &nfs_v4);
- return nfs_fs_mount_common(server, flags, dev_name, mount_info, &nfs_v4);
+ mount_info->server = nfs4_create_server(mount_info, &nfs_v4);
+ return nfs_fs_mount_common(flags, dev_name, mount_info, &nfs_v4);
}
static struct vfsmount *nfs_do_root_mount(struct file_system_type *fs_type,
@@ -260,7 +259,6 @@ nfs4_remote_referral_mount(struct file_system_type *fs_type, int flags,
.set_security = nfs_clone_sb_security,
.cloned = raw_data,
};
- struct nfs_server *server;
struct dentry *mntroot = ERR_PTR(-ENOMEM);
dprintk("--> nfs4_referral_get_sb()\n");
@@ -270,8 +268,8 @@ nfs4_remote_referral_mount(struct file_system_type *fs_type, int flags,
goto out;
/* create a new volume representation */
- server = nfs4_create_referral_server(mount_info.cloned, mount_info.mntfh);
- mntroot = nfs_fs_mount_common(server, flags, dev_name, &mount_info, &nfs_v4);
+ mount_info.server = nfs4_create_referral_server(mount_info.cloned, mount_info.mntfh);
+ mntroot = nfs_fs_mount_common(flags, dev_name, &mount_info, &nfs_v4);
out:
nfs_free_fhandle(mount_info.mntfh);
return mntroot;
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 9d2f1d6a5b9a..d57fc9983243 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -1896,14 +1896,12 @@ struct dentry *nfs_try_mount(int flags, const char *dev_name,
struct nfs_mount_info *mount_info,
struct nfs_subversion *nfs_mod)
{
- struct nfs_server *server;
-
if (mount_info->parsed->need_mount)
- server = nfs_try_mount_request(mount_info, nfs_mod);
+ mount_info->server = nfs_try_mount_request(mount_info, nfs_mod);
else
- server = nfs_mod->rpc_ops->create_server(mount_info, nfs_mod);
+ mount_info->server = nfs_mod->rpc_ops->create_server(mount_info, nfs_mod);
- return nfs_fs_mount_common(server, flags, dev_name, mount_info, nfs_mod);
+ return nfs_fs_mount_common(flags, dev_name, mount_info, nfs_mod);
}
EXPORT_SYMBOL_GPL(nfs_try_mount);
@@ -2649,20 +2647,21 @@ static void nfs_set_readahead(struct backing_dev_info *bdi,
bdi->io_pages = iomax_pages;
}
-struct dentry *nfs_fs_mount_common(struct nfs_server *server,
- int flags, const char *dev_name,
+struct dentry *nfs_fs_mount_common(int flags, const char *dev_name,
struct nfs_mount_info *mount_info,
struct nfs_subversion *nfs_mod)
{
struct super_block *s;
struct dentry *mntroot = ERR_PTR(-ENOMEM);
int (*compare_super)(struct super_block *, void *) = nfs_compare_super;
+ struct nfs_server *server = mount_info->server;
struct nfs_sb_mountdata sb_mntdata = {
.mntflags = flags,
.server = server,
};
int error;
+ mount_info->server = NULL;
if (IS_ERR(server))
return ERR_CAST(server);
@@ -2803,7 +2802,6 @@ nfs_xdev_mount(struct file_system_type *fs_type, int flags,
.set_security = nfs_clone_sb_security,
.cloned = data,
};
- struct nfs_server *server;
struct dentry *mntroot = ERR_PTR(-ENOMEM);
struct nfs_subversion *nfs_mod = NFS_SB(data->sb)->nfs_client->cl_nfs_mod;
@@ -2812,10 +2810,9 @@ nfs_xdev_mount(struct file_system_type *fs_type, int flags,
mount_info.mntfh = mount_info.cloned->fh;
/* create a new volume representation */
- server = nfs_mod->rpc_ops->clone_server(NFS_SB(data->sb), data->fh, data->fattr, data->authflavor);
+ mount_info.server = nfs_mod->rpc_ops->clone_server(NFS_SB(data->sb), data->fh, data->fattr, data->authflavor);
- mntroot = nfs_fs_mount_common(server, flags,
- dev_name, &mount_info, nfs_mod);
+ mntroot = nfs_fs_mount_common(flags, dev_name, &mount_info, nfs_mod);
dprintk("<-- nfs_xdev_mount() = %ld\n",
IS_ERR(mntroot) ? PTR_ERR(mntroot) : 0L);
--
2.17.2
On Wed, 20 Nov 2019, Scott Mayhew wrote:
> From: Al Viro <[email protected]>
>
> it's always either nfs_set_sb_security() or nfs_clone_sb_security(),
> the choice being controlled by mount_info->cloned != NULL. No need
> to add methods, especially when both instances live right next to
> the caller and are never accessed anywhere else.
>
> Reviewed-by: David Howells <[email protected]>
> Signed-off-by: Al Viro <[email protected]>
Please ensure that any changes relating to the LSM API are cc'd to the
linux-security-module list.
--
James Morris
<[email protected]>
Hi Anna, Trond,
Have you had a chance to look at these? Do you have any comments? I do
have a small fix to make to nfs4_validate_fspath() for an issue that Dan
Carpenter reported, but I was waiting to see if there was anything else.
-Scott
On Wed, 20 Nov 2019, Scott Mayhew wrote:
> Hi Trond, Anna,
>
> Here's a set of patches that converts NFS to use the mount API. Note that
> there are a lot of preliminary patches, some from David and some from Al.
> The final patch (the one that does the actual conversion) from the David's
> initial posting has been split into 5 separate patches, and the entire set
> has been rebased on top of 5.4-rc8.
>
> Changes since v4:
> - further split the original "NFS: Add fs_context support" patch (new
> patch is about 25% smaller than the v4 patch)
> - fixed NFSv4 referral mounts (broken in the original patch)
> - fixed leak of nfs_fattr when fs_context is freed
> Changes since v3:
> - changed license and copyright text in fs/nfs/fs_context.c
> Changes since v2:
> - fixed the conversion of the nconnect= option
> - added '#if IS_ENABLED(CONFIG_NFS_V4)' around nfs4_parse_monolithic()
> to avoid unused-function warning when compiling with v4 disabled
> Chagnes since v1:
> - split up patch 23 into 4 separate patches
>
> -Scott
>
> Al Viro (15):
> saner calling conventions for nfs_fs_mount_common()
> nfs: stash server into struct nfs_mount_info
> nfs: lift setting mount_info from nfs4_remote{,_referral}_mount
> nfs: fold nfs4_remote_fs_type and nfs4_remote_referral_fs_type
> nfs: don't bother setting/restoring export_path around
> do_nfs_root_mount()
> nfs4: fold nfs_do_root_mount/nfs_follow_remote_path
> nfs: lift setting mount_info from nfs_xdev_mount()
> nfs: stash nfs_subversion reference into nfs_mount_info
> nfs: don't bother passing nfs_subversion to ->try_mount() and
> nfs_fs_mount_common()
> nfs: merge xdev and remote file_system_type
> nfs: unexport nfs_fs_mount_common()
> nfs: don't pass nfs_subversion to ->create_server()
> nfs: get rid of mount_info ->fill_super()
> nfs_clone_sb_security(): simplify the check for server bogosity
> nfs: get rid of ->set_security()
>
> David Howells (8):
> NFS: Move mount parameterisation bits into their own file
> NFS: Constify mount argument match tables
> NFS: Rename struct nfs_parsed_mount_data to struct nfs_fs_context
> NFS: Split nfs_parse_mount_options()
> NFS: Deindent nfs_fs_context_parse_option()
> NFS: Add a small buffer in nfs_fs_context to avoid string dup
> NFS: Do some tidying of the parsing code
> NFS: Add fs_context support.
>
> Scott Mayhew (4):
> NFS: rename nfs_fs_context pointer arg in a few functions
> NFS: Convert mount option parsing to use functionality from
> fs_parser.h
> NFS: Additional refactoring for fs_context conversion
> NFS: Attach supplementary error information to fs_context.
>
> fs/nfs/Makefile | 2 +-
> fs/nfs/client.c | 80 +-
> fs/nfs/fs_context.c | 1424 +++++++++++++++++++++++++
> fs/nfs/fscache.c | 2 +-
> fs/nfs/getroot.c | 73 +-
> fs/nfs/internal.h | 132 +--
> fs/nfs/namespace.c | 144 ++-
> fs/nfs/nfs3_fs.h | 2 +-
> fs/nfs/nfs3client.c | 6 +-
> fs/nfs/nfs3proc.c | 2 +-
> fs/nfs/nfs4_fs.h | 9 +-
> fs/nfs/nfs4client.c | 99 +-
> fs/nfs/nfs4namespace.c | 291 ++---
> fs/nfs/nfs4proc.c | 2 +-
> fs/nfs/nfs4super.c | 257 ++---
> fs/nfs/proc.c | 2 +-
> fs/nfs/super.c | 2219 +++++----------------------------------
> include/linux/nfs_xdr.h | 9 +-
> 18 files changed, 2283 insertions(+), 2472 deletions(-)
> create mode 100644 fs/nfs/fs_context.c
>
> --
> 2.17.2
>