nptl/tst-popen1.c

   1 /* Copyright (C) 2003-2017 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <errno.h>
  20 #include <error.h>
  21 #include <pthread.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include <unistd.h>
  26
  27 static void *
  28 dummy (void *x)
  29 {
  30   return NULL;
  31 }
  32
  33 static char buf[sizeof "something\n"];
  34
  35 static int
  36 do_test (void)
  37 {
  38   FILE *f;
  39   pthread_t p;
  40   int err;
  41
  42   f = popen ("echo something", "r");
  43   if (f == NULL)
  44     error (EXIT_FAILURE, errno, "popen failed");
  45   if (fgets (buf, sizeof (buf), f) == NULL)
  46     error (EXIT_FAILURE, 0, "fgets failed");
  47   if (strcmp (buf, "something\n"))
  48     error (EXIT_FAILURE, 0, "read wrong data");
  49   if (pclose (f))
  50     error (EXIT_FAILURE, errno, "pclose returned non-zero");
  51   if ((err = pthread_create (&p, NULL, dummy, NULL)))
  52     error (EXIT_FAILURE, err, "pthread_create failed");
  53   if ((err = pthread_join (p, NULL)))
  54     error (EXIT_FAILURE, err, "pthread_join failed");
  55   exit (0);
  56 }
  57
  58 #define TEST_FUNCTION do_test ()
  59 #include "../test-skeleton.c"