posix/tst-spawn2.c

   1 /* Further tests for spawn in case of invalid binary paths.
   2    Copyright (C) 2016-2024 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   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    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <spawn.h>
  20 #include <error.h>
  21 #include <errno.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <unistd.h>
  25 #include <sys/wait.h>
  26 #include <stdio.h>
  27
  28 #include <support/check.h>
  29 #include <tst-spawn.h>
  30
  31 int
  32 do_test (void)
  33 {
  34   /* Check if posix_spawn correctly returns an error and an invalid pid
  35      by trying to spawn an invalid binary.  */
  36
  37   const char *program = "/path/to/invalid/binary";
  38   char * const args[] = { 0 };
  39   PID_T_TYPE pid = -1;
  40
  41   int ret = POSIX_SPAWN (&pid, program, 0, 0, args, environ);
  42   if (ret != ENOENT)
  43     {
  44       errno = ret;
  45       FAIL_EXIT1 ("posix_spawn: %m");
  46     }
  47
  48   /* POSIX states the value returned on pid variable in case of an error
  49      is not specified.  GLIBC will update the value iff the child
  50      execution is successful.  */
  51   if (pid != -1)
  52     FAIL_EXIT1 ("posix_spawn returned pid != -1 (%i)", (int) pid);
  53
  54   /* Check if no child is actually created.  */
  55   TEST_COMPARE (WAITID (P_ALL, 0, NULL, WEXITED), -1);
  56   TEST_COMPARE (errno, ECHILD);
  57
  58   /* Same as before, but with posix_spawnp.  */
  59   char *args2[] = { (char*) program, 0 };
  60
  61   ret = POSIX_SPAWNP (&pid, args2[0], 0, 0, args2, environ);
  62   if (ret != ENOENT)
  63     {
  64       errno = ret;
  65       FAIL_EXIT1 ("posix_spawnp: %m");
  66     }
  67
  68   if (pid != -1)
  69     FAIL_EXIT1 ("posix_spawnp returned pid != -1 (%i)", (int) pid);
  70
  71   TEST_COMPARE (WAITID (P_ALL, 0, NULL, WEXITED), -1);
  72   TEST_COMPARE (errno, ECHILD);
  73
  74   return 0;
  75 }
  76
  77 #include <support/test-driver.c>