tests/cris/check_openpf5.c

   1 /* Check that TRT happens when error on too many opened files.
   2 #notarget: cris*-*-elf
   3 #sim: --sysroot=@exedir@
   4 */
   5 #include <stddef.h>
   6 #include <stdlib.h>
   7 #include <stdio.h>
   8 #include <unistd.h>
   9 #include <errno.h>
  10 #include <limits.h>
  11 #include <sys/types.h>
  12 #include <sys/stat.h>
  13 #include <fcntl.h>
  14 #include <string.h>
  15
  16 int main (int argc, char *argv[])
  17 {
  18   int i;
  19   int filemax;
  20
  21 #ifdef OPEN_MAX
  22   filemax = OPEN_MAX;
  23 #else
  24   filemax = sysconf (_SC_OPEN_MAX);
  25 #endif
  26
  27   char *fn = malloc (strlen (argv[0]) + 2);
  28   if (fn == NULL)
  29     abort ();
  30   strcpy (fn, "/");
  31   strcat (fn, argv[0]);
  32
  33   for (i = 0; i < filemax + 1; i++)
  34     {
  35       if (open (fn, O_RDONLY) < 0)
  36         {
  37           /* Shouldn't happen too early.  */
  38           if (i < filemax - 3 - 1)
  39             {
  40               fprintf (stderr, "i: %d\n", i);
  41               abort ();
  42             }
  43           if (errno != EMFILE)
  44             {
  45               perror ("open");
  46               abort ();
  47             }
  48           goto ok;
  49         }
  50     }
  51   abort ();
  52
  53 ok:
  54   printf ("pass\n");
  55   exit (0);
  56 }