From: Theodore Ts'o Date: Mon, 6 Oct 2014 02:56:00 +0000 (-0400) Subject: ext4: add ext4_iget_normal() which is to be used for dir tree lookups X-Git-Tag: fixes-against-v3.18-rc2~28^2~5 X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f4bb2981024fc91b23b4d09a8817c415396dbabb;p=pandora-kernel.git 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 Signed-off-by: Theodore Ts'o Cc: stable@vger.kernel.org --- 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, Reading git-diff-tree failed