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| author |  Darrick J. Wong <darrick.wong@oracle.com>
| 2020-05-12 16:42:51 -0700 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com>
| 2020-05-19 09:40:56 -0700 |
| commit | 765d3c393c222c3bb281885ea211c8ebc08250b4 (patch) | |
| tree | 44bebfad379400a07d796ab5acaed2e9bedd9aa4 /fs/xfs/xfs_bmap_util.c | |
| parent | xfs: use ordered buffers to initialize dquot buffers during quotacheck (diff) | |
| download | linux-765d3c393c222c3bb281885ea211c8ebc08250b4.tar.gz linux-765d3c393c222c3bb281885ea211c8ebc08250b4.tar.bz2 linux-765d3c393c222c3bb281885ea211c8ebc08250b4.zip | |
xfs: don't allow SWAPEXT if we'd screw up quota accounting
Since the old SWAPEXT ioctl doesn't know how to adjust quota ids,
bail out of the ids don't match and quotas are enabled.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'fs/xfs/xfs_bmap_util.c')
| -rw-r--r-- | fs/xfs/xfs_bmap_util.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c index cc23a3e23e2d..b8acfd4d3ca6 100644 --- a/fs/xfs/xfs_bmap_util.c +++ b/fs/xfs/xfs_bmap_util.c @@ -1211,6 +1211,13 @@ xfs_swap_extents_check_format( struct xfs_inode *tip) /* tmp inode */ { + /* User/group/project quota ids must match if quotas are enforced. */ + if (XFS_IS_QUOTA_ON(ip->i_mount) && + (!uid_eq(VFS_I(ip)->i_uid, VFS_I(tip)->i_uid) || + !gid_eq(VFS_I(ip)->i_gid, VFS_I(tip)->i_gid) || + ip->i_d.di_projid != tip->i_d.di_projid)) + return -EINVAL; + /* Should never get a local format */ if (ip->i_d.di_format == XFS_DINODE_FMT_LOCAL || tip->i_d.di_format == XFS_DINODE_FMT_LOCAL) |