Subversion Repositories c0or1k

/*

 * 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>

#include <errno.h>

int mmaptest(void)

{

        int fd;

        void *base;

        int x = 0x1000;

        if ((fd = open("./mmapfile.txt", O_CREAT | O_TRUNC | O_RDWR, S_IRWXU)) < 0)

                goto out_err;

        /* Extend the file */

        if ((int)lseek(fd, PAGE_SIZE*16, SEEK_SET) < 0)

                goto out_err;

        if (write(fd, &x, sizeof(x)) < 0)

                goto out_err;

        if (IS_ERR(base = mmap(0, PAGE_SIZE*16, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0)))

                goto out_err;

        *(unsigned int *)(base + PAGE_SIZE*2) = 0x1000;

        if (msync(base + PAGE_SIZE*2, PAGE_SIZE, MS_SYNC) < 0)

                goto out_err;

        if (munmap(base + PAGE_SIZE*2, PAGE_SIZE) < 0)

                goto out_err;

        *(unsigned int *)(base + PAGE_SIZE*3) = 0x1000;

        *(unsigned int *)(base + PAGE_SIZE*1) = 0x1000;

        printf("MMAP TEST           -- PASSED --\n");

        return 0;

out_err:

        printf("MMAP TEST           -- FAILED --\n");

        return 0;

}