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| author | Al Viro <viro@ZenIV.linux.org.uk> | 2011-03-04 20:15:18 +0300 |
|---|---|---|
| committer | root <Chris Mason chris.mason@oracle.com> | 2011-03-28 13:37:56 +0400 |
| commit | c055e99eea6e4f614267632fac546e7896c0227b (patch) | |
| tree | df65ff7c1a3b0c4301edffbadd9f23f9023e5159 /fs | |
| parent | 92986796d84ef939e304099dece32572a755b280 (diff) | |
| download | linux-c055e99eea6e4f614267632fac546e7896c0227b.tar.xz | |
btrfs: check link counter overflow in link(2)
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/inode.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 4822b3132784..04babaf31a33 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -4837,6 +4837,9 @@ static int btrfs_link(struct dentry *old_dentry, struct inode *dir, if (root->objectid != BTRFS_I(inode)->root->objectid) return -EXDEV; + if (inode->i_nlink == ~0U) + return -EMLINK; + btrfs_inc_nlink(inode); inode->i_ctime = CURRENT_TIME; |