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| author | Theodore Ts'o <tytso@mit.edu> | 2014-10-05 22:56:00 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2014-10-05 22:56:00 -0400 |
| commit | f4bb2981024fc91b23b4d09a8817c415396dbabb (patch) | |
| tree | 7645d062e8808ab71b81b542c388e47d8b78b35f /fs/ext4/super.c | |
| parent | e2bfb088fac03c0f621886a04cffc7faa2b49b1d (diff) | |
| download | op-kernel-dev-f4bb2981024fc91b23b4d09a8817c415396dbabb.zip op-kernel-dev-f4bb2981024fc91b23b4d09a8817c415396dbabb.tar.gz | |
ext4: add ext4_iget_normal() which is to be used for dir tree lookups
If there is a corrupted file system which has directory entries that
point at reserved, metadata inodes, prohibit them from being used by
treating them the same way we treat Boot Loader inodes --- that is,
mark them to be bad inodes. This prohibits them from being opened,
deleted, or modified via chmod, chown, utimes, etc.
In particular, this prevents a corrupted file system which has a
directory entry which points at the journal inode from being deleted
and its blocks released, after which point Much Hilarity Ensues.
Reported-by: Sami Liedes <sami.liedes@iki.fi>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org
Diffstat (limited to 'fs/ext4/super.c')
| -rw-r--r-- | fs/ext4/super.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 1070d6e..a0811cc 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -1001,7 +1001,7 @@ static struct inode *ext4_nfs_get_inode(struct super_block *sb, * Currently we don't know the generation for parent directory, so * a generation of 0 means "accept any" */ - inode = ext4_iget(sb, ino); + inode = ext4_iget_normal(sb, ino); if (IS_ERR(inode)) return ERR_CAST(inode); if (generation && inode->i_generation != generation) { |
