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| author | Theodore Ts'o <tytso@mit.edu> | 2014-10-06 06:56:00 +0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2014-10-06 06:56:00 +0400 |
| commit | f4bb2981024fc91b23b4d09a8817c415396dbabb (patch) | |
| tree | 7645d062e8808ab71b81b542c388e47d8b78b35f /fs/ext4/ext4.h | |
| parent | e2bfb088fac03c0f621886a04cffc7faa2b49b1d (diff) | |
| download | linux-f4bb2981024fc91b23b4d09a8817c415396dbabb.tar.xz | |
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/ext4.h')
| -rw-r--r-- | fs/ext4/ext4.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 1eb5b7b912a8..012e89bd9644 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -2109,6 +2109,7 @@ int do_journal_get_write_access(handle_t *handle, #define CONVERT_INLINE_DATA 2 extern struct inode *ext4_iget(struct super_block *, unsigned long); +extern struct inode *ext4_iget_normal(struct super_block *, unsigned long); extern int ext4_write_inode(struct inode *, struct writeback_control *); extern int ext4_setattr(struct dentry *, struct iattr *); extern int ext4_getattr(struct vfsmount *mnt, struct dentry *dentry, |