Subversion Repositories openrisc_2011-10-31

/*

#notarget: cris*-*-elf

*/

#define _GNU_SOURCE

#include <string.h>

#include <stdlib.h>

#include <stdio.h>

#include <sys/types.h>

#include <sys/stat.h>

#include <fcntl.h>

#include <unistd.h>

#include <sys/mman.h>

int main (int argc, char *argv[])

{

  int fd = open (argv[0], O_RDONLY);

  struct stat sb;

  int size;

  void *a;

  void *b;

  const char *str = "a string you'll only find in the program";

  if (fd == -1)

    {

      perror ("open");

      abort ();

    }

  if (fstat (fd, &sb) < 0)

    {

      perror ("fstat");

      abort ();

    }

  size = 8192;

#ifdef MMAP_SIZE1

  size = MMAP_SIZE1;

#endif

#ifndef MMAP_PROT1

#define MMAP_PROT1 PROT_READ | PROT_WRITE | PROT_EXEC

#endif

#ifndef MMAP_FLAGS1

#define MMAP_FLAGS1 MAP_PRIVATE | MAP_ANONYMOUS

#endif

  /* Get a page, any page.  */

  b = mmap (NULL, size, MMAP_PROT1, MMAP_FLAGS1, -1, 0);

  if (b == MAP_FAILED)

    abort ();

  /* Remember it, unmap it.  */

#ifndef NO_MUNMAP

  if (munmap (b, size) != 0)

    abort ();

#endif

#ifdef MMAP_ADDR2

  b = MMAP_ADDR2;

#endif

#ifndef MMAP_PROT2

#define MMAP_PROT2 PROT_READ | PROT_EXEC

#endif

#ifndef MMAP_FLAGS2

#define MMAP_FLAGS2 MAP_DENYWRITE | MAP_FIXED | MAP_PRIVATE

#endif

  size = sb.st_size;

#ifdef MMAP_SIZE2

  size = MMAP_SIZE2;

#endif

#define MMAP_TEST_BAD_ORIG \

 (a == MAP_FAILED || memmem (a, size, str, strlen (str) + 1) == NULL)

#ifndef MMAP_TEST_BAD

#define MMAP_TEST_BAD MMAP_TEST_BAD_ORIG

#endif

  /* Try mapping the now non-mapped page fixed.  */

  a = mmap (b, size, MMAP_PROT2, MMAP_FLAGS2, fd, 0);

  if (MMAP_TEST_BAD)

    abort ();

  printf ("pass\n");

  exit (0);

}