tst_test.sh: Fix missing cleanup run from setup

There was a regression on tests which don't use TST_ALL_FILESYSTEMS=1
when the cleanup function was not run when test called tst_brk in the
setup function. This broke DCCP tests on kernels without dccp_ipv6
module:

./dccp_ipsec_vti.sh; ltp_file -p esp -m tunnel -s 100:500:1000:R1000
dccp_ipsec_vti 1 TINFO: Test vti + IPsec[esp/tunnel]
...
netstress.c:970: TCONF: Failed to load dccp_ipv6 module

Summary:
passed   0
failed   0
broken   0
skipped  1
warnings 0
netstress.c:970: TCONF: Failed to load dccp_ipv6 module
dccp_ipsec_vti 1 TCONF: server failed

./dccp4_ipsec02 dccp_ipsec.sh -p ah -m transport -s 100:500:1000:R1000
...
dccp_ipsec_vti 1 TINFO: Test vti + IPsec[esp/tunnel]
dccp_ipsec_vti 1 TBROK: ip link add ltp_vti0 type vti local 10.0.0.2 remote 10.0.0.1 key 10 dev ltp_ns_veth2 failed: RTNETLINK answers: File exists

The reason was that cleanup function call was moved from _tst_do_exit()
to _tst_run_iterations() created for TST_ALL_FILESYSTEMS. But cleanup
function still needs to be run in _tst_do_exit() (but only) if it
weren't called before.

Fixes: 1f6bd6e ("tst_test.sh: Add $TST_ALL_FILESYSTEMS")

Reported-by: Martin Doucha <[email protected]>
Reviewed-by: Cyril Hrubis <[email protected]>
Signed-off-by: Petr Vorel <[email protected]>

testcases/lib/tst_test.sh

@@ -24,11 +24,25 @@ export TST_LIB_LOADED=1
 trap "tst_brk TBROK 'test interrupted'" INT
 trap "unset _tst_setup_timer_pid; tst_brk TBROK 'test terminated'" TERM
 
+_tst_do_cleanup()
+{
+	if [ -n "$TST_DO_CLEANUP" -a -n "$TST_CLEANUP" -a -z "$TST_NO_CLEANUP" ]; then
+		if command -v $TST_CLEANUP >/dev/null 2>/dev/null; then
+			$TST_CLEANUP
+		else
+			tst_res TWARN "TST_CLEANUP=$TST_CLEANUP declared, but function not defined (or cmd not found)"
+		fi
+	fi
+	TST_DO_CLEANUP=
+}
+
 _tst_do_exit()
 {
 	local ret=0
 	TST_DO_EXIT=1
 
+	_tst_do_cleanup
+
 	cd "$LTPROOT"
 	[ "$TST_MOUNT_FLAG" = 1 ] && tst_umount
 
@@ -785,13 +799,7 @@ _tst_run_iterations()
 		_tst_i=$((_tst_i-1))
 	done
 
-	if [ -n "$TST_DO_CLEANUP" -a -n "$TST_CLEANUP" -a -z "$TST_NO_CLEANUP" ]; then
-		if command -v $TST_CLEANUP >/dev/null 2>/dev/null; then
-			$TST_CLEANUP
-		else
-			tst_res TWARN "TST_CLEANUP=$TST_CLEANUP declared, but function not defined (or cmd not found)"
-		fi
-	fi
+	_tst_do_cleanup
 
 	if [ "$TST_MOUNT_FLAG" = 1 ]; then
 		cd "$LTPROOT"