test: Add test programs for #1242

Change-Id: Ib3b5d5b661e0cd027711a815d9da2e308cedeffc
Refs: #1242

test/issues/1242/Makefile

@@ -0,0 +1,6 @@
+# Makefile COPYRIGHT FUJITSU LIMITED 2018
+target:
+	gcc -O0 -g main.c -o a.out
+
+clean:
+	rm -f a.out

test/issues/1242/README

@@ -0,0 +1,20 @@
+==========
+How to run
+==========
+
+make
+mcexec ./a.out
+
+==================
+How to judge OK/NG
+==================
+
+OK when:
+1. No error in stdout
+2. No error in kmsg (ihkosctl 0 kmsg)
+
+==============
+What is tested
+==============
+
+The behavior of madvise(..., MADV_REMOVE) on shmget memory

test/issues/1242/main.c

@@ -0,0 +1,54 @@
+/* main.c COPYRIGHT FUJITSU LIMITED 2018 */
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdlib.h>
+#include <sys/shm.h>
+#include <sys/mman.h>
+
+int main(int argc, char **argv)
+{
+	int ret;
+	int shmid = -1;
+	char *shm_addr = (void *)-1;
+	size_t shm_length;
+	const size_t pgsize = sysconf(_SC_PAGESIZE);
+
+	printf("call shmget.\n");
+	shm_length = pgsize;
+	shmid = shmget(IPC_PRIVATE, shm_length, IPC_CREAT | SHM_R | SHM_W);
+	if (shmid == -1) {
+		perror("shmget error.");
+		ret = EXIT_FAILURE;
+		goto out;
+	}
+
+	printf("call shmat.\n");
+	shm_addr = shmat(shmid, NULL, 0);
+	if (shm_addr == (void *)-1) {
+		perror("shmat error.");
+		ret = EXIT_FAILURE;
+		goto out;
+	}
+	memset(shm_addr, '0', shm_length);
+
+	printf("call madvise.\n");
+	ret = madvise(shm_addr, shm_length, MADV_REMOVE);
+	if (ret == -1) {
+		perror("madvise error.");
+		ret = EXIT_FAILURE;
+		goto out;
+	}
+
+	ret = EXIT_SUCCESS;
+	printf("success.\n");
+out:
+	if (shm_addr != (void *)-1) {
+		shmdt(shm_addr);
+	}
+
+	if (shmid != -1) {
+		shmctl(shmid, IPC_RMID, 0);
+	}
+	return ret;
+}