Initial commit

tasks/test0/src/mmaptest.c

@@ -0,0 +1,60 @@
+/*
+ * Test mmap/munmap posix calls.
+ *
+ * Copyright (C) 2007 - 2008 Bahadir Balban
+ */
+#include <sys/ipc.h>
+#include <sys/shm.h>
+#include <sys/types.h>
+#include <sys/mman.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <tests.h>
+
+#define PAGE_SIZE		0x1000
+
+int mmaptest(void)
+{
+	int fd;
+	void *base;
+	int x = 0x1000;
+
+	if ((fd = open("./newfile.txt", O_CREAT | O_TRUNC | O_RDWR, S_IRWXU)) < 0)
+		perror("open:");
+	else
+		printf("open: Success.\n");
+
+	/* Extend the file */
+	if ((int)lseek(fd, PAGE_SIZE*16, SEEK_SET) < 0)
+		perror("lseek");
+	else
+		printf("lseek: Success.\n");
+
+	if (write(fd, &x, sizeof(x)) < 0)
+		perror("write");
+	else
+		printf("write: Success.\n");
+
+	if ((int)(base = mmap(0, PAGE_SIZE*16, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0)) < 0)
+		perror("mmap");
+	else
+		printf("mmap: Success: %p\n", base);
+
+	*(unsigned int *)(base + PAGE_SIZE*2) = 0x1000;
+	if (msync(base + PAGE_SIZE*2, PAGE_SIZE, MS_SYNC) < 0)
+		perror("msync");
+	else
+		printf("msync: Success: %p\n", base);
+
+	if (munmap(base + PAGE_SIZE*2, PAGE_SIZE) < 0)
+		perror("munmap");
+	else
+		printf("munmap: Success: %p\n", base);
+	*(unsigned int *)(base + PAGE_SIZE*3) = 0x1000;
+	*(unsigned int *)(base + PAGE_SIZE*1) = 0x1000;
+
+	return 0;
+}