2008-03-14 18:11:06

by Chuck Lever III

[permalink] [raw]
Subject: [PATCH 5/5] NFS: Show most mount options via nfs_show_options()

Display all mount options in /proc/mount which may be needed to reconstruct
a previous mount.

Signed-off-by: Chuck Lever <[email protected]>
Cc: Miklos Szeredi <[email protected]>
---

fs/nfs/super.c | 67 ++++++++++++++++++++++++++++++++++++++++++++++++++++++--
1 files changed, 65 insertions(+), 2 deletions(-)

diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 3c6f53a..c99ca1f 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -441,10 +441,52 @@ static const char *nfs_pseudoflavour_to_name(rpc_authflavor_t flavour)
return sec_flavours[i].str;
}

+static void nfs_show_mountd_options(struct seq_file *m, struct nfs_server *nfss,
+ int showdefaults)
+{
+ struct sockaddr *sap = (struct sockaddr *)&nfss->mountd_address;
+
+ switch (sap->sa_family) {
+ case AF_INET: {
+ struct sockaddr_in *sin = (struct sockaddr_in *)sap;
+ seq_printf(m, ",mountaddr=" NIPQUAD_FMT,
+ NIPQUAD(sin->sin_addr.s_addr));
+ break;
+ }
+ case AF_INET6: {
+ struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sap;
+ seq_printf(m, ",mountaddr=" NIP6_FMT,
+ NIP6(sin6->sin6_addr));
+ break;
+ }
+ default:
+ if (showdefaults)
+ seq_printf(m, ",mountaddr=unspecified");
+ }
+
+ if (nfss->mountd_version || showdefaults)
+ seq_printf(m, ",mountvers=%u", nfss->mountd_version);
+ if (nfss->mountd_port || showdefaults)
+ seq_printf(m, ",mountport=%u", nfss->mountd_port);
+
+ switch (nfss->mountd_protocol) {
+ case IPPROTO_UDP:
+ seq_printf(m, ",mountproto=udp");
+ break;
+ case IPPROTO_TCP:
+ seq_printf(m, ",mountproto=tcp");
+ break;
+ default:
+ if (showdefaults)
+ seq_printf(m, ",mountproto=auto");
+ }
+}
+
/*
* Describe the mount options in force on this server representation
*/
-static void nfs_show_mount_options(struct seq_file *m, struct nfs_server *nfss, int showdefaults)
+static void nfs_show_mount_options(struct seq_file *m, struct nfs_server *nfss,
+ int showdefaults)
{
static const struct proc_nfs_info {
int flag;
@@ -452,6 +494,8 @@ static void nfs_show_mount_options(struct seq_file *m, struct nfs_server *nfss,
const char *nostr;
} nfs_info[] = {
{ NFS_MOUNT_SOFT, ",soft", ",hard" },
+ { NFS_MOUNT_INTR, ",intr", ",nointr" },
+ { NFS_MOUNT_POSIX, ",posix", "" },
{ NFS_MOUNT_NOCTO, ",nocto", "" },
{ NFS_MOUNT_NOAC, ",noac", "" },
{ NFS_MOUNT_NONLM, ",nolock", "" },
@@ -462,10 +506,14 @@ static void nfs_show_mount_options(struct seq_file *m, struct nfs_server *nfss,
};
const struct proc_nfs_info *nfs_infop;
struct nfs_client *clp = nfss->nfs_client;
+ u32 version = clp->rpc_ops->version;

- seq_printf(m, ",vers=%u", clp->rpc_ops->version);
+ seq_printf(m, ",vers=%u", version);
seq_printf(m, ",rsize=%u", nfss->rsize);
seq_printf(m, ",wsize=%u", nfss->wsize);
+ if (nfss->bsize != 0)
+ seq_printf(m, ",bsize=%u", nfss->bsize);
+ seq_printf(m, ",namlen=%u", nfss->namelen);
if (nfss->acregmin != 3*HZ || showdefaults)
seq_printf(m, ",acregmin=%u", nfss->acregmin/HZ);
if (nfss->acregmax != 60*HZ || showdefaults)
@@ -482,9 +530,24 @@ static void nfs_show_mount_options(struct seq_file *m, struct nfs_server *nfss,
}
seq_printf(m, ",proto=%s",
rpc_peeraddr2str(nfss->client, RPC_DISPLAY_PROTO));
+ if (version == 4) {
+ if (nfss->port != NFS_PORT)
+ seq_printf(m, ",port=%u", nfss->port);
+ } else
+ if (nfss->port)
+ seq_printf(m, ",port=%u", nfss->port);
+
seq_printf(m, ",timeo=%lu", 10U * nfss->client->cl_timeout->to_initval / HZ);
seq_printf(m, ",retrans=%u", nfss->client->cl_timeout->to_retries);
seq_printf(m, ",sec=%s", nfs_pseudoflavour_to_name(nfss->client->cl_auth->au_flavor));
+
+ if (version != 4)
+ nfs_show_mountd_options(m, nfss, showdefaults);
+
+#ifdef CONFIG_NFS_V4
+ if (clp->rpc_ops->version == 4)
+ seq_printf(m, ",clientaddr=%s", clp->cl_ipaddr);
+#endif
}

/*