1 files changed, 64 insertions, 0 deletions
diff --git a/usr/klibc/tests/sigint.c b/usr/klibc/tests/sigint.c
new file mode 100644
index 0000000..ec62e33
--- /dev/null
+++ b/usr/klibc/tests/sigint.c
@@ -0,0 +1,64 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <signal.h>
+
+static sig_atomic_t counter = 0;
+
+static void sig_handler(int signum)
+{
+	static const char msg[] = "Signal handler\n";
+
+	(void)signum;
+
+	write(1, msg, sizeof msg - 1);
+	counter++;
+}
+
+int main(int argc, char *argv[])
+{
+	struct sigaction act, oact;
+	pid_t f;
+	sigset_t set;
+
+	(void)argc;
+
+	memset(&act, 0x00, sizeof(struct sigaction));
+	act.sa_handler = sig_handler;
+	sigemptyset(&act.sa_mask);
+	act.sa_flags = SA_RESTART;
+
+	/* oact is there for the benefit of strace() */
+	sigaction(SIGINT, &act, &oact);
+	sigaction(SIGTERM, &act, &oact);
+
+	sigemptyset(&set);
+	sigaddset(&set, SIGINT);
+	sigprocmask(SIG_BLOCK, &set, NULL);
+
+	f = fork();
+
+	if (f < 0) {
+		perror(argv[0]);
+		exit(255);
+	} else if (f > 0) {
+		sleep(3);
+		if (counter) {
+			fprintf(stderr, "Signal received while masked!\n");
+			exit(1);
+		}
+		sigprocmask(SIG_UNBLOCK, &set, NULL);
+		sleep(3);
+		if (!counter) {
+			fprintf(stderr, "No signal received!\n");
+			exit(1);
+		} else {
+			printf("Signal received OK\n");
+			exit(0);
+		}
+	} else {
+		sleep(1);
+		kill(getppid(), SIGINT);
+		_exit(0);
+	}
+}