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xfs: Sanity check flags of Q_XQUOTARM call

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Flags passed to Q_XQUOTARM were not sanity checked for invalid values.
Fix that.

Fixes: 9da93f9b7c ("xfs: fix Q_XQUOTARM ioctl")
Reported-by: Yang Xu <[email protected]>
Signed-off-by: Jan Kara <[email protected]>
Reviewed-by: Eric Sandeen <[email protected]>
Reviewed-by: Darrick J. Wong <[email protected]>
Signed-off-by: Darrick J. Wong <[email protected]>
This commit is contained in:
Jan Kara authored and Darrick J. Wong committed 2019-10-24 08:05:24 -07:00
1 parent 1aa6300638
commit 3dd4d40b42
1 file changed
+3
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fs/xfs/xfs_quotaops.c
+3
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@@ -201,6 +201,9 @@ xfs_fs_rm_xquota(
if (XFS_IS_QUOTA_ON(mp))
return -EINVAL;
if (uflags & ~(FS_USER_QUOTA | FS_GROUP_QUOTA | FS_PROJ_QUOTA))
return -EINVAL;
if (uflags & FS_USER_QUOTA)
flags |= XFS_DQ_USER;
if (uflags & FS_GROUP_QUOTA)