armbian/linux-rockchip
0
0
Fork 0
mirror of https://github.com/armbian/linux-rockchip.git synced 2026-01-06 11:08:10 -08:00
Code Issues Packages Projects Releases Wiki Activity

xfs: fallocate() should call file_modified()

Browse Source 
commit fbe7e52003 upstream.

In XFS, we always update the inode change and modification time when
any fallocate() operation succeeds.  Furthermore, as various
fallocate modes can change the file contents (extending EOF,
punching holes, zeroing things, shifting extents), we should drop
file privileges like suid just like we do for a regular write().
There's already a VFS helper that figures all this out for us, so
use that.

The net effect of this is that we no longer drop suid/sgid if the
caller is root, but we also now drop file capabilities.

We also move the xfs_update_prealloc_flags() function so that it now
is only called by the scope that needs to set the the prealloc flag.

Based on a patch from Darrick Wong.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dave Chinner
2023-03-18 12:15:19 +02:00
committed by Greg Kroah-Hartman
parent 35f049abba
commit 308dfe49eb
1 changed files with 9 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
fs/xfs/xfs_file.c
View File

@@ -895,6 +895,10 @@ xfs_file_fallocate(
goto out_unlock;
}
error = file_modified(file);
if (error)
goto out_unlock;
if (mode & FALLOC_FL_PUNCH_HOLE) {
error = xfs_free_file_space(ip, offset, len);
if (error)
@@ -996,11 +1000,12 @@ xfs_file_fallocate(
if (error)
goto out_unlock;
}
}
error = xfs_update_prealloc_flags(ip, flags);
if (error)
goto out_unlock;
error = xfs_update_prealloc_flags(ip, XFS_PREALLOC_SET);
if (error)
goto out_unlock;
}
/* Change file size if needed */
if (new_size) {