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| author |   Miklos Szeredi <mszeredi@redhat.com> | 2020-11-11 17:22:32 +0100 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2020-11-11 17:22:32 +0100 |
| commit | df8629af293493757beccac2d3168fe5a315636e (patch) | |
| tree | 0b02a0a162331bd10fb7540a8fa099002111aec4 /fs/fuse/dir.c | |
| parent | virtiofs: clean up error handling in virtio_fs_get_tree() (diff) | |
| download | linux-dev-df8629af293493757beccac2d3168fe5a315636e.tar.xz linux-dev-df8629af293493757beccac2d3168fe5a315636e.zip | |
fuse: always revalidate if exclusive create
Failure to do so may result in EEXIST even if the file only exists in the
cache and not in the filesystem.
The atomic nature of O_EXCL mandates that the cached state should be
ignored and existence verified anew.
Reported-by: Ken Schalk <kschalk@nvidia.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/fuse/dir.c')
| -rw-r--r-- | fs/fuse/dir.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c index e9c244524985..c3e22a3dd323 100644 --- a/fs/fuse/dir.c +++ b/fs/fuse/dir.c @@ -205,7 +205,7 @@ static int fuse_dentry_revalidate(struct dentry *entry, unsigned int flags) if (inode && is_bad_inode(inode)) goto invalid; else if (time_before64(fuse_dentry_time(entry), get_jiffies_64()) || - (flags & LOOKUP_REVAL)) { + (flags & (LOOKUP_EXCL | LOOKUP_REVAL))) { struct fuse_entry_out outarg; FUSE_ARGS(args); struct fuse_forget_link *forget; |