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authorLinus Torvalds <torvalds@linux-foundation.org>2012-08-18 10:02:17 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-08-18 10:02:17 -0700
commit20fb1936dee63fe397236d4ff3fd253a62b7b0b8 (patch)
treebbabde4f08ec8388549083df426fdcc6ffd2f82a
parent1ce41cd849d476f45b2dccaf40b39fe6c4f8d793 (diff)
parent62b2ce964bb901f00a480104bd35a2e1f8d2cf58 (diff)
downloadop-kernel-dev-20fb1936dee63fe397236d4ff3fd253a62b7b0b8.zip
op-kernel-dev-20fb1936dee63fe397236d4ff3fd253a62b7b0b8.tar.gz
Merge branch 'vfs-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs
Pull vfs fixes from Miklos Szeredi. This mainly fixes some confusion about whether the open 'mode' variable passed around should contain the full file type (S_IFREG etc) information or just the permission mode. In particular, the lack of proper file type information had confused fuse. * 'vfs-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs: vfs: fix propagation of atomic_open create error on negative dentry fuse: check create mode in atomic open vfs: pass right create mode to may_o_create() vfs: atomic_open(): fix create mode usage vfs: canonicalize create mode in build_open_flags()
-rw-r--r--fs/fuse/dir.c3
-rw-r--r--fs/namei.c8
-rw-r--r--fs/open.c7
3 files changed, 13 insertions, 5 deletions
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index 8964cf3..324bc08 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -383,6 +383,9 @@ static int fuse_create_open(struct inode *dir, struct dentry *entry,
struct fuse_entry_out outentry;
struct fuse_file *ff;
+ /* Userspace expects S_IFREG in create mode */
+ BUG_ON((mode & S_IFMT) != S_IFREG);
+
forget = fuse_alloc_forget();
err = -ENOMEM;
if (!forget)
diff --git a/fs/namei.c b/fs/namei.c
index 1b46439..db76b86 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -2414,7 +2414,7 @@ static int atomic_open(struct nameidata *nd, struct dentry *dentry,
goto out;
}
- mode = op->mode & S_IALLUGO;
+ mode = op->mode;
if ((open_flag & O_CREAT) && !IS_POSIXACL(dir))
mode &= ~current_umask();
@@ -2452,7 +2452,7 @@ static int atomic_open(struct nameidata *nd, struct dentry *dentry,
}
if (open_flag & O_CREAT) {
- error = may_o_create(&nd->path, dentry, op->mode);
+ error = may_o_create(&nd->path, dentry, mode);
if (error) {
create_error = error;
if (open_flag & O_EXCL)
@@ -2489,6 +2489,10 @@ static int atomic_open(struct nameidata *nd, struct dentry *dentry,
dput(dentry);
dentry = file->f_path.dentry;
}
+ if (create_error && dentry->d_inode == NULL) {
+ error = create_error;
+ goto out;
+ }
goto looked_up;
}
diff --git a/fs/open.c b/fs/open.c
index bc132e1..e1f2cdb 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -852,9 +852,10 @@ static inline int build_open_flags(int flags, umode_t mode, struct open_flags *o
int lookup_flags = 0;
int acc_mode;
- if (!(flags & O_CREAT))
- mode = 0;
- op->mode = mode;
+ if (flags & O_CREAT)
+ op->mode = (mode & S_IALLUGO) | S_IFREG;
+ else
+ op->mode = 0;
/* Must never be set by userspace */
flags &= ~FMODE_NONOTIFY;
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