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Bug fixes for 6.9-rc3: 

* Allow creating new links to special files which were not associated with a
    project quota.
 
 Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>
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Merge tag 'xfs-6.9-fixes-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux

Pull xfs fix from Chandan Babu:

 - Allow creating new links to special files which were not associated
   with a project quota

* tag 'xfs-6.9-fixes-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  xfs: allow cross-linking special files without project quota
This commit is contained in:
Linus Torvalds 2024-04-06 09:14:18 -07:00
parent 119c289409 e23d7e82b7
commit 9520c192e8
1 changed files with 13 additions and 2 deletions
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15
fs/xfs/xfs_inode.c
View File

@ -1301,8 +1301,19 @@ xfs_link(
*/
if (unlikely((tdp->i_diflags & XFS_DIFLAG_PROJINHERIT) &&
tdp->i_projid != sip->i_projid)) {
error = -EXDEV;
goto error_return;
/*
* Project quota setup skips special files which can
* leave inodes in a PROJINHERIT directory without a
* project ID set. We need to allow links to be made
* to these "project-less" inodes because userspace
* expects them to succeed after project ID setup,
* but everything else should be rejected.
*/
if (!special_file(VFS_I(sip)->i_mode) ||
sip->i_projid != 0) {
error = -EXDEV;
goto error_return;
}
}
if (!resblks) {