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From 8c82f3a4aa2d029dcc303cbf95a71194aa5ac9c3 Mon Sep 17 00:00:00 2001
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From: Evgeny Vereshchagin <evvers@ya.ru>
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Date: Fri, 9 Nov 2018 04:01:15 +0100
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Subject: [PATCH] udev-test: skip the test only if it can't setup its
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 environment
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This is basically a replacement for 0eb3cc88504b5d8f74.
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(cherry picked from commit 110a13202eab6d92678abcde08372d4afac1cc45)
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Related: #1642728
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---
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 src/test/test-udev.c |  8 ++++++++
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 test/udev-test.pl    | 24 +++++++++++++++++++++---
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 2 files changed, 29 insertions(+), 3 deletions(-)
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diff --git a/src/test/test-udev.c b/src/test/test-udev.c
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index bed51c1270..f098fab721 100644
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--- a/src/test/test-udev.c
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+++ b/src/test/test-udev.c
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@@ -65,6 +65,11 @@ int main(int argc, char *argv[]) {
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         log_parse_environment();
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         log_open();
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+        if (!IN_SET(argc, 2, 3)) {
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+                log_error("This program needs one or two arguments, %d given", argc - 1);
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+                return EXIT_FAILURE;
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+        }
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+
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         err = fake_filesystems();
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         if (err < 0)
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                 return EXIT_FAILURE;
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@@ -73,6 +78,9 @@ int main(int argc, char *argv[]) {
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         if (udev == NULL)
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                 return EXIT_FAILURE;
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+        if (argc == 2)
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+                return EXIT_SUCCESS;
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+
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         log_debug("version %s", PACKAGE_VERSION);
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         mac_selinux_init();
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diff --git a/test/udev-test.pl b/test/udev-test.pl
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index 05b3e17188..aa38bae0b1 100755
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--- a/test/udev-test.pl
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+++ b/test/udev-test.pl
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@@ -1537,18 +1537,28 @@ sub udev_setup {
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         system("umount", $udev_tmpfs);
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         rmdir($udev_tmpfs);
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         mkdir($udev_tmpfs) || die "unable to create udev_tmpfs: $udev_tmpfs\n";
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-        system("mount", "-o", "rw,mode=755,nosuid,noexec", "-t", "tmpfs", "tmpfs", $udev_tmpfs) && die "unable to mount tmpfs";
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+
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+        if (system("mount", "-o", "rw,mode=755,nosuid,noexec", "-t", "tmpfs", "tmpfs", $udev_tmpfs)) {
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+                warn "unable to mount tmpfs";
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+                return 0;
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+        }
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         mkdir($udev_dev) || die "unable to create udev_dev: $udev_dev\n";
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         # setting group and mode of udev_dev ensures the tests work
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         # even if the parent directory has setgid bit enabled.
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         chown (0, 0, $udev_dev) || die "unable to chown $udev_dev\n";
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         chmod (0755, $udev_dev) || die "unable to chmod $udev_dev\n";
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-        system("mknod", $udev_dev . "/null", "c", "1", "3") && die "unable to create $udev_dev/null";
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+
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+        if (system("mknod", $udev_dev . "/null", "c", "1", "3")) {
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+                warn "unable to create $udev_dev/null";
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+                return 0;
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+        }
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         system("cp", "-r", "test/sys/", $udev_sys) && die "unable to copy test/sys";
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         system("rm", "-rf", "$udev_run");
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+
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+        return 1;
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 }
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 sub run_test {
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@@ -1646,7 +1656,15 @@ if ($? >> 8 == 0) {
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         exit($EXIT_TEST_SKIP);
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 }
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-udev_setup();
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+if (!udev_setup()) {
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+        warn "Failed to set up the environment, skipping the test";
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+        exit($EXIT_TEST_SKIP);
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+}
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+
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+if (!system($udev_bin, "check")) {
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+        warn "$udev_bin failed to set up the environment, skipping the test";
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+        exit($EXIT_TEST_SKIP);
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+}
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 my $test_num = 1;
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 my @list;