Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-11 22:51:42 +00:00
Code Issues Packages Projects Releases Wiki Activity

ext4 crypto: enforce crypto policy restrictions on cross-renames

Browse Source 
Thanks to Chao Yu <chao2.yu@samsung.com> for pointing out the need for
this check.

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Theodore Ts'o 2015-05-31 13:35:09 -04:00
parent e709e9df64
commit c2faccaff6
1 changed files with 9 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
fs/ext4/namei.c
View File

@ -3647,6 +3647,15 @@ static int ext4_cross_rename(struct inode *old_dir, struct dentry *old_dentry,
u8 new_file_type;
int retval;
if ((ext4_encrypted_inode(old_dir) ||
ext4_encrypted_inode(new_dir)) &&
(old_dir != new_dir) &&
(!ext4_is_child_context_consistent_with_parent(new_dir,
old.inode) ||
!ext4_is_child_context_consistent_with_parent(old_dir,
new.inode)))
return -EPERM;
dquot_initialize(old.dir);
dquot_initialize(new.dir);