1 /*

     2 #notarget: cris*-*-elf

     3 */

     4 

     5 #define _GNU_SOURCE

     6 #include <string.h>

     7 #include <stdlib.h>

     8 #include <stdio.h>

     9 #include <sys/types.h>

    10 #include <sys/stat.h>

    11 #include <fcntl.h>

    12 #include <unistd.h>

    13 #include <sys/mman.h>

    14 

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

    16 {

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

    18   struct stat sb;

    19   int size;

    20   void *a;

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

    22 

    23   if (fd == -1)

    24     {

    25       perror ("open");

    26       abort ();

    27     }

    28 

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

    30     {

    31       perror ("fstat");

    32       abort ();

    33     }

    34 

    35   size = sb.st_size;

    36 

    37   /* We want to test mmapping a size that isn't exactly a page.  */

    38   if ((size & 8191) == 0)

    39     size--;

    40 

    41   a = mmap (NULL, size, PROT_READ, MAP_SHARED, fd, 0);

    42 

    43   if (memmem (a, size, str, strlen (str) + 1) == NULL)

    44     abort ();

    45 

    46   printf ("pass\n");

    47   exit (0);

    48 }