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authorAl Viro <viro@zeniv.linux.org.uk>2012-06-22 12:39:14 +0400
committerAl Viro <viro@zeniv.linux.org.uk>2012-07-14 16:33:35 +0400
commitd95852777bc8ba6b3ad3397d495c5f9dd8ca8383 (patch)
tree96e9d8b1d33c4f6f7b5ba5be0fa4fd8f77c7a67f /fs/nfs/dir.c
parent3d8a00d2099ebc6d5a6e95fadaf861709d9919a8 (diff)
make ->atomic_open() return int
Change of calling conventions: old new NULL 1 file 0 ERR_PTR(-ve) -ve Caller *knows* that struct file *; no need to return it. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/nfs/dir.c')
-rw-r--r--fs/nfs/dir.c57
1 files changed, 27 insertions, 30 deletions
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 6deb2549ead..b56f4b36ed4 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -111,9 +111,9 @@ const struct inode_operations nfs3_dir_inode_operations = {
#ifdef CONFIG_NFS_V4
-static struct file *nfs_atomic_open(struct inode *, struct dentry *,
- struct opendata *, unsigned, umode_t,
- int *);
+static int nfs_atomic_open(struct inode *, struct dentry *,
+ struct opendata *, unsigned, umode_t,
+ int *);
const struct inode_operations nfs4_dir_inode_operations = {
.create = nfs_create,
.lookup = nfs_lookup,
@@ -1387,10 +1387,10 @@ static int do_open(struct inode *inode, struct file *filp)
return 0;
}
-static struct file *nfs_finish_open(struct nfs_open_context *ctx,
- struct dentry *dentry,
- struct opendata *od, unsigned open_flags,
- int *opened)
+static int nfs_finish_open(struct nfs_open_context *ctx,
+ struct dentry *dentry,
+ struct opendata *od, unsigned open_flags,
+ int *opened)
{
struct file *filp;
int err;
@@ -1403,30 +1403,31 @@ static struct file *nfs_finish_open(struct nfs_open_context *ctx,
/* If the open_intent is for execute, we have an extra check to make */
if (ctx->mode & FMODE_EXEC) {
err = nfs_may_open(dentry->d_inode, ctx->cred, open_flags);
- if (err < 0) {
- filp = ERR_PTR(err);
+ if (err < 0)
goto out;
- }
}
filp = finish_open(od, dentry, do_open, opened);
- if (!IS_ERR(filp))
- nfs_file_set_open_context(filp, ctx);
+ if (IS_ERR(filp)) {
+ err = PTR_ERR(filp);
+ goto out;
+ }
+ nfs_file_set_open_context(filp, ctx);
+ err = 0;
out:
put_nfs_open_context(ctx);
- return filp;
+ return err;
}
-static struct file *nfs_atomic_open(struct inode *dir, struct dentry *dentry,
- struct opendata *od, unsigned open_flags,
- umode_t mode, int *opened)
+static int nfs_atomic_open(struct inode *dir, struct dentry *dentry,
+ struct opendata *od, unsigned open_flags,
+ umode_t mode, int *opened)
{
struct nfs_open_context *ctx;
struct dentry *res;
struct iattr attr = { .ia_valid = ATTR_OPEN };
struct inode *inode;
- struct file *filp;
int err;
/* Expect a negative dentry */
@@ -1437,21 +1438,19 @@ static struct file *nfs_atomic_open(struct inode *dir, struct dentry *dentry,
/* NFS only supports OPEN on regular files */
if ((open_flags & O_DIRECTORY)) {
- err = -ENOENT;
if (!d_unhashed(dentry)) {
/*
* Hashed negative dentry with O_DIRECTORY: dentry was
* revalidated and is fine, no need to perform lookup
* again
*/
- goto out_err;
+ return -ENOENT;
}
goto no_open;
}
- err = -ENAMETOOLONG;
if (dentry->d_name.len > NFS_SERVER(dir)->namelen)
- goto out_err;
+ return -ENAMETOOLONG;
if (open_flags & O_CREAT) {
attr.ia_valid |= ATTR_MODE;
@@ -1465,7 +1464,7 @@ static struct file *nfs_atomic_open(struct inode *dir, struct dentry *dentry,
ctx = create_nfs_open_context(dentry, open_flags);
err = PTR_ERR(ctx);
if (IS_ERR(ctx))
- goto out_err;
+ goto out;
nfs_block_sillyrename(dentry->d_parent);
inode = NFS_PROTO(dir)->open_context(dir, ctx, open_flags, &attr);
@@ -1489,7 +1488,7 @@ static struct file *nfs_atomic_open(struct inode *dir, struct dentry *dentry,
default:
break;
}
- goto out_err;
+ goto out;
}
res = d_add_unique(dentry, inode);
if (res != NULL)
@@ -1498,22 +1497,20 @@ static struct file *nfs_atomic_open(struct inode *dir, struct dentry *dentry,
nfs_unblock_sillyrename(dentry->d_parent);
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
- filp = nfs_finish_open(ctx, dentry, od, open_flags, opened);
+ err = nfs_finish_open(ctx, dentry, od, open_flags, opened);
dput(res);
- return filp;
-
-out_err:
- return ERR_PTR(err);
+out:
+ return err;
no_open:
res = nfs_lookup(dir, dentry, NULL);
err = PTR_ERR(res);
if (IS_ERR(res))
- goto out_err;
+ goto out;
finish_no_open(od, res);
- return NULL;
+ return 1;
}
static int nfs4_lookup_revalidate(struct dentry *dentry, struct nameidata *nd)