Return-Path: Received: from mx2.suse.de ([195.135.220.15]:38547 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751012AbeBSFE7 (ORCPT ); Mon, 19 Feb 2018 00:04:59 -0500 From: NeilBrown To: Trond Myklebust , Anna Schumaker Date: Mon, 19 Feb 2018 16:02:29 +1100 Subject: [PATCH 18/23] NFS: struct nfs_open_dir_context: convert rpc_cred pointer to cred. Cc: linux-nfs@vger.kernel.org Message-ID: <151901654939.17421.1298440743164896423.stgit@noble> In-Reply-To: <151901634940.17421.7637564368419392071.stgit@noble> References: <151901634940.17421.7637564368419392071.stgit@noble> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Sender: linux-nfs-owner@vger.kernel.org List-ID: Use the common 'struct cred' to pass credentials for readdir. Signed-off-by: NeilBrown --- fs/nfs/dir.c | 15 +++++---------- fs/nfs/nfs3proc.c | 11 +++++++++-- fs/nfs/nfs4proc.c | 13 ++++++++++--- fs/nfs/proc.c | 11 +++++++++-- include/linux/nfs_fs.h | 2 +- include/linux/nfs_xdr.h | 2 +- 6 files changed, 35 insertions(+), 19 deletions(-) diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index cf520079315c..6e363bb590f1 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -67,7 +67,7 @@ const struct address_space_operations nfs_dir_aops = { .freepage = nfs_readdir_clear_array, }; -static struct nfs_open_dir_context *alloc_nfs_open_dir_context(struct inode *dir, struct rpc_cred *cred) +static struct nfs_open_dir_context *alloc_nfs_open_dir_context(struct inode *dir, const struct cred *cred) { struct nfs_inode *nfsi = NFS_I(dir); struct nfs_open_dir_context *ctx; @@ -77,7 +77,7 @@ static struct nfs_open_dir_context *alloc_nfs_open_dir_context(struct inode *dir ctx->attr_gencount = nfsi->attr_gencount; ctx->dir_cookie = 0; ctx->dup_cookie = 0; - ctx->cred = get_rpccred(cred); + ctx->cred = get_cred(cred); spin_lock(&dir->i_lock); list_add(&ctx->list, &nfsi->open_files); spin_unlock(&dir->i_lock); @@ -91,7 +91,7 @@ static void put_nfs_open_dir_context(struct inode *dir, struct nfs_open_dir_cont spin_lock(&dir->i_lock); list_del(&ctx->list); spin_unlock(&dir->i_lock); - put_rpccred(ctx->cred); + put_cred(ctx->cred); kfree(ctx); } @@ -103,23 +103,18 @@ nfs_opendir(struct inode *inode, struct file *filp) { int res = 0; struct nfs_open_dir_context *ctx; - struct rpc_cred *cred; dfprintk(FILE, "NFS: open dir(%pD2)\n", filp); nfs_inc_stats(inode, NFSIOS_VFSOPEN); - cred = rpc_lookup_cred(); - if (IS_ERR(cred)) - return PTR_ERR(cred); - ctx = alloc_nfs_open_dir_context(inode, cred); + ctx = alloc_nfs_open_dir_context(inode, current_cred()); if (IS_ERR(ctx)) { res = PTR_ERR(ctx); goto out; } filp->private_data = ctx; out: - put_rpccred(cred); return res; } @@ -334,7 +329,7 @@ int nfs_readdir_xdr_filler(struct page **pages, nfs_readdir_descriptor_t *desc, struct nfs_entry *entry, struct file *file, struct inode *inode) { struct nfs_open_dir_context *ctx = file->private_data; - struct rpc_cred *cred = ctx->cred; + const struct cred *cred = ctx->cred; unsigned long timestamp, gencount; int error; diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c index 682f22946975..2b1291396162 100644 --- a/fs/nfs/nfs3proc.c +++ b/fs/nfs/nfs3proc.c @@ -606,7 +606,7 @@ nfs3_proc_rmdir(struct inode *dir, const struct qstr *name) * readdirplus. */ static int -nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, +nfs3_proc_readdir(struct dentry *dentry, const struct cred *cred, u64 cookie, struct page **pages, unsigned int count, bool plus) { struct inode *dir = d_inode(dentry); @@ -623,11 +623,15 @@ nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, .verf = verf, .plus = plus }; + struct auth_cred acred = { + .cred = cred, + }; struct rpc_message msg = { .rpc_proc = &nfs3_procedures[NFS3PROC_READDIR], .rpc_argp = &arg, .rpc_resp = &res, - .rpc_cred = cred + .rpc_cred = rpc_lookup_generic_cred(&acred, + 0, GFP_NOFS), }; int status = -ENOMEM; @@ -637,6 +641,8 @@ nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, dprintk("NFS call readdir%s %d\n", plus? "plus" : "", (unsigned int) cookie); + if (!msg.rpc_cred) + return -ENOMEM; res.dir_attr = nfs_alloc_fattr(); if (res.dir_attr == NULL) goto out; @@ -648,6 +654,7 @@ nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, nfs_free_fattr(res.dir_attr); out: + put_rpccred(msg.rpc_cred); dprintk("NFS reply readdir%s: %d\n", plus? "plus" : "", status); return status; diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index ae8fe42c1206..dc46e4d64e6b 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -4503,7 +4503,7 @@ static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, return err; } -static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, +static int _nfs4_proc_readdir(struct dentry *dentry, const struct cred *cred, u64 cookie, struct page **pages, unsigned int count, bool plus) { struct inode *dir = d_inode(dentry); @@ -4516,17 +4516,23 @@ static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, .plus = plus, }; struct nfs4_readdir_res res; + struct auth_cred acred = { + .cred = cred, + }; struct rpc_message msg = { .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], .rpc_argp = &args, .rpc_resp = &res, - .rpc_cred = cred, + .rpc_cred = rpc_lookup_generic_cred(&acred, + 0, GFP_NOFS), }; int status; dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__, dentry, (unsigned long long)cookie); + if (!msg.rpc_cred) + return -ENOMEM; nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args); res.pgbase = args.pgbase; status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); @@ -4537,11 +4543,12 @@ static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, nfs_invalidate_atime(dir); + put_rpccred(msg.rpc_cred); dprintk("%s: returns %d\n", __func__, status); return status; } -static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, +static int nfs4_proc_readdir(struct dentry *dentry, const struct cred *cred, u64 cookie, struct page **pages, unsigned int count, bool plus) { struct nfs4_exception exception = { }; diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c index f7fd9192d4bc..70df66a72d15 100644 --- a/fs/nfs/proc.c +++ b/fs/nfs/proc.c @@ -485,7 +485,7 @@ nfs_proc_rmdir(struct inode *dir, const struct qstr *name) * from nfs_readdir by calling the decode_entry function directly. */ static int -nfs_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, +nfs_proc_readdir(struct dentry *dentry, const struct cred *cred, u64 cookie, struct page **pages, unsigned int count, bool plus) { struct inode *dir = d_inode(dentry); @@ -495,18 +495,25 @@ nfs_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, .count = count, .pages = pages, }; + struct auth_cred acred = { + .cred = cred, + }; struct rpc_message msg = { .rpc_proc = &nfs_procedures[NFSPROC_READDIR], .rpc_argp = &arg, - .rpc_cred = cred, + .rpc_cred = rpc_lookup_generic_cred(&acred, + 0, GFP_NOFS), }; int status; dprintk("NFS call readdir %d\n", (unsigned int)cookie); + if (!msg.rpc_cred) + return -ENOMEM; status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); nfs_invalidate_atime(dir); + put_rpccred(msg.rpc_cred); dprintk("NFS reply readdir: %d\n", status); return status; } diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index 0a7e66efe212..702b6fe5d642 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -87,7 +87,7 @@ struct nfs_open_context { struct nfs_open_dir_context { struct list_head list; - struct rpc_cred *cred; + const struct cred *cred; unsigned long attr_gencount; __u64 dir_cookie; __u64 dup_cookie; diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 6959968dc36a..b33a7f3577e1 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1602,7 +1602,7 @@ struct nfs_rpc_ops { unsigned int, struct iattr *); int (*mkdir) (struct inode *, struct dentry *, struct iattr *); int (*rmdir) (struct inode *, const struct qstr *); - int (*readdir) (struct dentry *, struct rpc_cred *, + int (*readdir) (struct dentry *, const struct cred *, u64, struct page **, unsigned int, bool); int (*mknod) (struct inode *, struct dentry *, struct iattr *, dev_t);