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| author | Theodore Ts'o <tytso@mit.edu> | 2011-06-06 19:19:40 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2011-06-07 08:51:14 -0400 |
| commit | e6bc45d65df8599fdbae73be9cec4ceed274db53 (patch) | |
| tree | 2a9a5a0c0835b431d605332ebbfa6dad66e069f0 /fs/namei.c | |
| parent | 9054760ff585a7fa436599990b63a585ae89ff4d (diff) | |
| download | linux-e6bc45d65df8599fdbae73be9cec4ceed274db53.tar.gz linux-e6bc45d65df8599fdbae73be9cec4ceed274db53.tar.bz2 linux-e6bc45d65df8599fdbae73be9cec4ceed274db53.zip | |
vfs: make unlink() and rmdir() return ENOENT in preference to EROFS
If user space attempts to remove a non-existent file or directory, and
the file system is mounted read-only, return ENOENT instead of EROFS.
Either error code is arguably valid/correct, but ENOENT is a more
specific error message.
Reported-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/namei.c')
| -rw-r--r-- | fs/namei.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/fs/namei.c b/fs/namei.c index e2e4e8d032ee..9802345df5e7 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -2624,6 +2624,10 @@ static long do_rmdir(int dfd, const char __user *pathname) error = PTR_ERR(dentry); if (IS_ERR(dentry)) goto exit2; + if (!dentry->d_inode) { + error = -ENOENT; + goto exit3; + } error = mnt_want_write(nd.path.mnt); if (error) goto exit3; @@ -2709,11 +2713,10 @@ static long do_unlinkat(int dfd, const char __user *pathname) error = PTR_ERR(dentry); if (!IS_ERR(dentry)) { /* Why not before? Because we want correct error value */ - if (nd.last.name[nd.last.len]) - goto slashes; inode = dentry->d_inode; - if (inode) - ihold(inode); + if (nd.last.name[nd.last.len] || !inode) + goto slashes; + ihold(inode); error = mnt_want_write(nd.path.mnt); if (error) goto exit2; |