xfs: modify quota tests to work on generic filesystems

Fix several xfs quota tests to work on non-xfs filesystems.

New _require function to be sure that the xfs_quota tool can operate
on foreign filesystems; if it can, and if it needs to, it adds "-f"
to the XFS_QUOTA_PROG variable.

Modify _qmount to do quotacheck/quotaon to mount and /enable/
quota.  On xfs this isn't needed and/or fails; it's ignored.

All quota-related options used as arguments to _qmount are changed
from i.e. uquota to i.e. usrquota; the latter is standard across
almost all linux filesytems, including xfs.

xfs/260 filters out the root/default quota line, because ext4
consumes a different amount of space than xfs, and it's not what
we're testing for, so just ignore it.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Bill O'Donnell <billodo@redhat.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>

common/quota

@@ -77,6 +77,20 @@ _require_xfs_quota()
     [ -n "$XFS_QUOTA_PROG" ] || _notrun "XFS quota user tools not installed"
 }
 
+#
+# checks that xfs_quota can operate on foreign (non-xfs) filesystems
+# Skips check on xfs filesystems, old xfs_quota is fine there.
+# Appends "-f" to enable foreign behavior on non-xfs filesystems if available.
+#
+_require_xfs_quota_foreign()
+{
+	if [ "$FSTYP" != "xfs" ]; then
+		$XFS_QUOTA_PROG -f -V &>/dev/null || \
+		 _notrun "xfs_quota binary does not support foreign filesystems"
+		XFS_QUOTA_PROG="$XFS_QUOTA_PROG -f"
+	fi
+}
+
 #
 # checks that the XFS project quota support in the kernel is enabled.
 #
@@ -169,6 +183,12 @@ _qmount()
 {
     _scratch_unmount >/dev/null 2>&1
     _scratch_mount || _fail "qmount failed"
+    # xfs doesn't need these setups and quotacheck even fails on xfs
+    # redirect the output to $seqres.full for debug purpose and ignore results
+    if [ "$FSTYP" != "xfs" ]; then
+        quotacheck -ug $SCRATCH_MNT >>$seqres.full 2>&1
+        quotaon -ug $SCRATCH_MNT >>$seqres.full 2>&1
+    fi
     chmod ugo+rwx $SCRATCH_MNT
 }