R0dn3yS/android_kernel_xiaomi_sm7250
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

nilfs2: fix incorrect masking of permission flags for symlinks

Browse Source 
commit 5924e6ec1585445f251ea92713eb15beb732622a upstream.

The permission flags of newly created symlinks are wrongly dropped on
nilfs2 with the current umask value even though symlinks should have 777
(rwxrwxrwx) permissions:

 $ umask
 0022
 $ touch file && ln -s file symlink; ls -l file symlink
 -rw-r--r--. 1 root root 0 Jun 23 16:29 file
 lrwxr-xr-x. 1 root root 4 Jun 23 16:29 symlink -> file

This fixes the bug by inserting a missing check that excludes
symlinks.

Link: https://lkml.kernel.org/r/1655974441-5612-1-git-send-email-konishi.ryusuke@gmail.com
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Reported-by: Tommy Pettersson <ptp@lysator.liu.se>
Reported-by: Ciprian Craciun <ciprian.craciun@gmail.com>
Tested-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ryusuke Konishi 2022-06-23 17:54:01 +09:00 committed by Greg Kroah-Hartman
parent cec2bbdcc1
commit 5ccc87a893
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
fs/nilfs2/nilfs.h
View File

@ -198,6 +198,9 @@ static inline int nilfs_acl_chmod(struct inode *inode)
static inline int nilfs_init_acl(struct inode *inode, struct inode *dir)
{
if (S_ISLNK(inode->i_mode))
return 0;
inode->i_mode &= ~current_umask();
return 0;
}