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
main(int argc,char * argv[])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 #ifndef MMAP_FLAGS
42 #define MMAP_FLAGS MAP_PRIVATE
43 #endif
44
45 a = mmap (NULL, size, PROT_READ, MMAP_FLAGS, fd, 0);
46
47 if (memmem (a, size, str, strlen (str) + 1) == NULL)
48 abort ();
49
50 printf ("pass\n");
51 exit (0);
52 }
53