Ensure that the kill signal undergoing testing is not ignored.

ok bluhm@

1 files changed, 15 insertions, 1 deletions

diff --git a/src/regress/lib/libc/sys/t_kill.c b/src/regress/lib/libc/sys/t_kill.c
index c92bbdd18b..871427cb8d 100644
--- a/src/regress/lib/libc/sys/t_kill.c
+++ b/src/regress/lib/libc/sys/t_kill.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: t_kill.c,v 1.1.1.1 2019/11/19 19:57:03 bluhm Exp $    */
+/*      $OpenBSD: t_kill.c,v 1.2 2021/07/29 15:33:17 anton Exp $        */
 /* $NetBSD: t_kill.c,v 1.1 2011/07/07 06:57:53 jruoho Exp $ */
 
 /*-
@@ -60,6 +60,17 @@ ATF_TC_BODY(kill_basic, tc)
         int sta;
 
         for (i = 0; i < __arraycount(sig); i++) {
+                struct sigaction act, oact;
+
+                /* Ensure the signal is not ignored. */
+                if (sig[i] != SIGKILL) {
+                        memset(&act, 0, sizeof(act));
+                        act.sa_handler = SIG_DFL;
+                        ATF_REQUIRE(sigaction(sig[i], &act, &oact) == 0);
+                } else {
+                        ATF_REQUIRE(sigaction(sig[i], &act, &oact) != 0);
+                        ATF_REQUIRE(errno == EINVAL);
+                }
 
                 pid = fork();
                 ATF_REQUIRE(pid >= 0);
@@ -78,6 +89,9 @@ ATF_TC_BODY(kill_basic, tc)
 
                 if (WIFSIGNALED(sta) == 0 || WTERMSIG(sta) != sig[i])
                         atf_tc_fail("kill(2) failed to kill child");
+
+                if (sig[i] != SIGKILL)
+                        ATF_REQUIRE(sigaction(sig[i], &oact, NULL) == 0);
         }
 }