file map: cause SIGBUS when access to a page beyond EOF

Change-Id: Iaf7d792413e674267fd1c05c382212c8f67d8f5b
Refs: #1291

test/issues/1291/map_and_read.c

@@ -0,0 +1,50 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <sys/mman.h>
+
+#define TEST_TEXT "Test Text"
+
+int main(int argc, char *argv[])
+{
+	int fd;
+	long pgsize = getpagesize();
+	void *addr;
+	int rc = 0;
+	char *ch;
+
+	if (argc < 2) {
+		printf("ERROR: too few arguments\n");
+		return -1;
+	}
+
+	printf("** FileMap(2pages) %s and read\n", argv[1]);
+	if ((fd = open(argv[1], O_RDONLY)) == -1) {
+		perror("open");
+		exit(-1);
+	}
+
+	addr = mmap(0, pgsize * 2, PROT_READ, MAP_FILE | MAP_SHARED, fd, 0);
+	if (addr == MAP_FAILED) {
+		perror("mmap");
+		return -1;
+	}
+
+	ch = addr;
+	printf("value: 0x%lx\n", (unsigned long)*ch);
+	printf("Touch head of 1st page: OK\n");
+
+	ch = addr + (pgsize / 2) + 64;
+	printf("value: 0x%lx\n", (unsigned long)*ch);
+	printf("Touch middle of 1st page: OK\n");
+
+	ch = addr + pgsize + 64;
+	printf("value: 0x%lx\n", (unsigned long)*ch);
+	printf("Touch middle of 2nd page: OK\n");
+
+	munmap(addr, pgsize * 2);
+	close(fd);
+}