linuxthreads/tst-popen.c

   1 #include <errno.h>
   2 #include <error.h>
   3 #include <pthread.h>
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6 #include <string.h>
   7 #include <unistd.h>
   8
   9 static void *
  10 dummy (void *x)
  11 {
  12   return NULL;
  13 }
  14
  15 static char buf[sizeof "something\n"];
  16
  17 static int
  18 do_test (void)
  19 {
  20   FILE *f;
  21   pthread_t p;
  22
  23   pthread_create (&p, NULL, dummy, NULL);
  24   f = popen ("echo something", "r");
  25   if (f == NULL)
  26     error (EXIT_FAILURE, errno, "popen failed");
  27   if (fgets (buf, sizeof (buf), f) == NULL)
  28     error (EXIT_FAILURE, 0, "fgets failed");
  29   if (strcmp (buf, "something\n"))
  30     error (EXIT_FAILURE, 0, "read wrong data");
  31   if (pclose (f))
  32     error (EXIT_FAILURE, errno, "pclose returned non-zero");
  33   exit (0);
  34 }
  35
  36 #define TEST_FUNCTION do_test ()
  37 #include "../test-skeleton.c"