tests/test-spawn.c

   1 /* Test of <spawn.h> substitute.
   2    Copyright (C) 2009-2017 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program 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
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  16
  17 /* Written by Eric Blake <ebb9@byu.net>, 2009.  */
  18
  19 #include <config.h>
  20
  21 #include <spawn.h>
  22
  23 /* Check for existence of required types.  */
  24 struct check
  25 {
  26   posix_spawnattr_t a;
  27   posix_spawn_file_actions_t b;
  28   mode_t c;
  29   pid_t d;
  30   sigset_t e;
  31 } s;
  32
  33 /* struct sched_param is allowed to be an incomplete type without
  34    <sched.h>, but must have a forward declaration to avoid a
  35    compilation error in the following usage.  */
  36 extern void f (struct sched_param *g);
  37 #include <sched.h>
  38 extern void f (struct sched_param *g);
  39
  40 int
  41 main (void)
  42 {
  43   switch (POSIX_SPAWN_RESETIDS)
  44     {
  45     case POSIX_SPAWN_RESETIDS:
  46     case POSIX_SPAWN_SETPGROUP:
  47     case POSIX_SPAWN_SETSIGDEF:
  48     case POSIX_SPAWN_SETSIGMASK:
  49     case (POSIX_SPAWN_SETSCHEDPARAM != 0 ? POSIX_SPAWN_SETSCHEDPARAM : -1):
  50     case (POSIX_SPAWN_SETSCHEDULER != 0 ? POSIX_SPAWN_SETSCHEDULER : -2):
  51       ;
  52     }
  53   return s.c + s.d;
  54 }