sysdeps/pthread/tst-pt-popen1.c

   1 /* Copyright (C) 2003-2023 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <errno.h>
  19 #include <error.h>
  20 #include <pthread.h>
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <unistd.h>
  25
  26 static void *
  27 dummy (void *x)
  28 {
  29   return NULL;
  30 }
  31
  32 static char buf[sizeof "something\n"];
  33
  34 static int
  35 do_test (void)
  36 {
  37   FILE *f;
  38   pthread_t p;
  39   int err;
  40
  41   f = popen ("echo something", "r");
  42   if (f == NULL)
  43     error (EXIT_FAILURE, errno, "popen failed");
  44   if (fgets (buf, sizeof (buf), f) == NULL)
  45     error (EXIT_FAILURE, 0, "fgets failed");
  46   if (strcmp (buf, "something\n"))
  47     error (EXIT_FAILURE, 0, "read wrong data");
  48   if (pclose (f))
  49     error (EXIT_FAILURE, errno, "pclose returned non-zero");
  50   if ((err = pthread_create (&p, NULL, dummy, NULL)))
  51     error (EXIT_FAILURE, err, "pthread_create failed");
  52   if ((err = pthread_join (p, NULL)))
  53     error (EXIT_FAILURE, err, "pthread_join failed");
  54   exit (0);
  55 }
  56
  57 #define TEST_FUNCTION do_test ()
  58 #include "../test-skeleton.c"