diff options
| author | Csaba Henk <csaba@gluster.com> | 2009-11-27 19:30:14 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-12-08 11:17:19 -0800 |
| commit | e192c2e5db689c874f6e56166face8ac96544350 (patch) | |
| tree | 17c633277d6c121bdf16c3fd2d3b585edd9e9e2b | |
| parent | fdab80d867f4df236d5158a232275147964a7705 (diff) | |
fuse: reject O_DIRECT flag also in fuse_create
commit 1b7323965a8c6eee9dc4e345a7ae4bff1dc93149 upstream.
The comment in fuse_open about O_DIRECT:
"VFS checks this, but only _after_ ->open()"
also holds for fuse_create, however, the same kind of check was missing there.
As an impact of this bug, open(newfile, O_RDWR|O_CREAT|O_DIRECT) fails, but a
stub newfile will remain if the fuse server handled the implied FUSE_CREATE
request appropriately.
Other impact: in the above situation ima_file_free() will complain to open/free
imbalance if CONFIG_IMA is set.
Signed-off-by: Csaba Henk <csaba@gluster.com>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Cc: Harshavardhana <harsha@gluster.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | fs/fuse/dir.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c index fd03330cadeb..1695c2e708c0 100644 --- a/fs/fuse/dir.c +++ b/fs/fuse/dir.c @@ -398,6 +398,9 @@ static int fuse_create_open(struct inode *dir, struct dentry *entry, int mode, if (fc->no_create) return -ENOSYS; + if (flags & O_DIRECT) + return -EINVAL; + forget_req = fuse_get_req(fc); if (IS_ERR(forget_req)) return PTR_ERR(forget_req); |