Test "mcexec additional options (h, m, n, O, stack-premap)" on arm64

Change-Id: I85d5deb0433cc1208e4b6837dcc6d6dc2a7b7b52

test/mcexec_options/arm64/allow_oversubscribe.c

@@ -0,0 +1,71 @@
+/* allow_oversubscribe.c COPYRIGHT FUJITSU LIMITED 2018 */
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <stdlib.h>
+
+#define PROG "/usr/bin/date"
+
+static int
+do_fork(int proc_num)
+{
+	int i;
+
+	for (i = 0; i < proc_num; i += 1) {
+		pid_t pid = fork();
+
+		if (pid < 0) {
+			perror("fork failed");
+			return -1;
+		}
+		else if (0 == pid) {
+			printf("%d: in child (%d/%d)\n",
+			    getpid(), (i+1), proc_num);
+			execl(PROG, PROG, NULL);
+			exit(0);
+			/* NOTREACHED */
+		}
+	}
+
+	return 0;
+}
+
+static int
+do_wait(int proc_num)
+{
+	pid_t mypid = getpid();
+	int i;
+
+	printf("%d: in parent\n", mypid);
+	for (i = 0; i < proc_num; i += 1) {
+		int status;
+		pid_t pid = waitpid(-1, &status, 0);
+
+		if (pid < 0) {
+			perror("waitpid failed");
+			return -1;
+		}
+		printf("%d: waited %d (%d/%d)\n",
+		    mypid, pid, (i+1), proc_num);
+	}
+	printf("%d: all done\n", mypid);
+
+	return 0;
+}
+
+int
+main(int argc, char *argv[])
+{
+	int result = 0;
+	int proc_num = atoi(argv[1]);
+
+	if (do_fork(proc_num)) {
+		result = -1;
+	}
+
+	if (do_wait(proc_num)) {
+		result = -1;
+	}
+	return result;
+}