mem: Check if phys-mem is within the range of McKernel memory

Fujitsu: POSTK_DEBUG_TEMP_FIX_52
Refs: #1164
Change-Id: Idb9a6eac1d2e1df4c663c3171925c774421177fd

test/issues/1164/CT_001.c

@@ -0,0 +1,81 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <errno.h>
+
+#include "./test_chk.h"
+
+#define TEST_NAME "CT_001"
+
+#define PROCFILE_LEN 128
+#define MAP_LEN 4096
+#define DEV_NAME "/dev/test_mck/mmap_dev2"
+
+int main(int argc, char *argv[])
+{
+	int dev_fd = 0, fd = 0, i = 0;
+	pid_t pid = getpid();
+	char pfname[PROCFILE_LEN];
+	void *dev_map = NULL;
+	unsigned long *read_buf = NULL;
+	off_t ret = 0;
+
+	printf("*** %s start *******************************\n", TEST_NAME);
+
+	/* open device file */
+	dev_fd = open(DEV_NAME, O_RDONLY);
+	OKNG(dev_fd < 0, "open test_device_file:%s", DEV_NAME);
+
+	/* mmap device file */
+	dev_map = mmap(NULL, MAP_LEN, PROT_READ, MAP_SHARED, dev_fd, 0);
+	OKNG(dev_map == MAP_FAILED, "mmap device file");
+	printf("  map dev_file to %p\n", dev_map);
+
+	/* allocate read_buf */
+	read_buf = malloc(MAP_LEN);
+	CHKANDJUMP(read_buf == NULL, "malloc read_buf");
+
+	/* generate proc_mem path */
+	sprintf(pfname, "/proc/%d/mem", pid);
+
+	/* open proc_mem */
+	fd = open(pfname, O_RDONLY);
+	CHKANDJUMP(fd < 0, "open proc_mem");
+
+	/* lseek */
+	ret = lseek(fd, (off_t)dev_map, SEEK_SET);
+	CHKANDJUMP(ret == -1, "lseek");
+
+	/* read */
+	ret = read(fd, read_buf, MAP_LEN);
+	OKNG(ret != -1 || errno != EIO, "failed to read host's phys_memory");
+
+	free(read_buf);
+	close(dev_fd);
+	close(fd);
+
+	printf("*** %s PASSED\n\n", TEST_NAME);
+
+	return 0;
+
+fn_fail:
+
+	if (read_buf) {
+		free(read_buf);
+	}
+	if (dev_fd > 0) {
+		close(dev_fd);
+	}
+	if (fd > 0) {
+		close(fd);
+	}
+
+	printf("*** %s FAILED\n\n", TEST_NAME);
+
+	return -1;
+
+}