issue 863: add test cases and test evidences

test/mng_mod/issues/863/CT3001.c

@@ -0,0 +1,40 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <signal.h>
+#include <errno.h>
+#include <time.h>
+#include <sys/time.h>
+
+void
+sig(int s)
+{
+	fprintf(stderr, "signal hanlder is called\n");
+}
+
+int
+main(int argc, char **argv)
+{
+	struct sigaction act;
+	int fds[2];
+	char c;
+	int rc;
+
+	memset(&act, '\0', sizeof act);
+	act.sa_handler = sig;
+	sigaction(SIGALRM, &act, NULL);
+	alarm(3);
+	pipe(fds);
+	rc = read(fds[0], &c, 1);
+	if (rc != -1) {
+		fprintf(stderr, "CT3001 NG BAD read rc=%d\n", rc);
+		exit(1);
+	}
+	if (errno != EINTR) {
+		fprintf(stderr, "CT3001 NG BAD error errno=%d\n", errno);
+		exit(1);
+	}
+	fprintf(stderr, "CT3001 OK\n");
+	exit(0);
+}