[iptables PATCH 10/11] tests: Adjust testsuite return codes to automake guidelines

[Phil Sutter <phil@nwl.cc>]

As per the manual[1]:

"When no test protocol is in use, an exit status of 0 from a test script
will denote a success, an exit status of 77 a skipped test, an exit
status of 99 a hard error, and any other exit status will denote a
failure."

[1] https://www.gnu.org/software/automake/manual/html_node/Scripts_002dbased-Testsuites.html

Signed-off-by: Phil Sutter <phil@nwl.cc>
---
 iptables-test.py                  | 2 +-
 iptables/tests/shell/run-tests.sh | 4 +++-
 xlate-test.py                     | 2 +-
 3 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/iptables-test.py b/iptables-test.py
index dc031c2b60450..de1e1e95fda55 100755
--- a/iptables-test.py
+++ b/iptables-test.py
@@ -579,7 +579,7 @@ STDERR_IS_TTY = sys.stderr.isatty()
 
     if os.getuid() != 0:
         print("You need to be root to run this, sorry", file=sys.stderr)
-        return
+        return 77
 
     if not args.netns and not args.no_netns and not spawn_netns():
         print("Cannot run in own namespace, connectivity might break",
diff --git a/iptables/tests/shell/run-tests.sh b/iptables/tests/shell/run-tests.sh
index 7a80af3432285..1125690583b46 100755
--- a/iptables/tests/shell/run-tests.sh
+++ b/iptables/tests/shell/run-tests.sh
@@ -21,7 +21,6 @@ EOF
 
 msg_error() {
         echo "E: $1 ..." >&2
-        exit 1
 }
 
 msg_warn() {
@@ -34,10 +33,12 @@ msg_info() {
 
 if [ "$(id -u)" != "0" ] ; then
         msg_error "this requires root!"
+        exit 77
 fi
 
 if [ ! -d "$TESTDIR" ] ; then
         msg_error "missing testdir $TESTDIR"
+        exit 99
 fi
 
 # support matching repeated pattern in SINGLE check below
@@ -76,6 +77,7 @@ while [ -n "$1" ]; do
 		;;
 	*)
 		msg_error "unknown parameter '$1'"
+		exit 99
 		;;
 	esac
 done
diff --git a/xlate-test.py b/xlate-test.py
index 4f037ef6ed96d..4cb1401b71677 100755
--- a/xlate-test.py
+++ b/xlate-test.py
@@ -250,7 +250,7 @@ xtables_nft_multi = 'xtables-nft-multi'
                 tests, passed, failed, errors = run_test(args.test, payload)
         except IOError:
             print(red("Error: ") + "test file does not exist", file=sys.stderr)
-            return -1
+            return 99
     else:
         files, tests, passed, failed, errors = load_test_files()
 
-- 
2.38.0