1  /* Further tests for spawn in case of invalid binary paths.
       2     Copyright (C) 2016-2023 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  
      30  int
      31  do_test (void)
      32  {
      33    /* Check if posix_spawn correctly returns an error and an invalid pid
      34       by trying to spawn an invalid binary.  */
      35  
      36    const char *program = "/path/to/invalid/binary";
      37    char * const args[] = { 0 };
      38    pid_t pid = -1;
      39  
      40    int ret = posix_spawn (&pid, program, 0, 0, args, environ);
      41    if (ret != ENOENT)
      42      {
      43        errno = ret;
      44        FAIL_EXIT1 ("posix_spawn: %m");
      45      }
      46  
      47    /* POSIX states the value returned on pid variable in case of an error
      48       is not specified.  GLIBC will update the value iff the child
      49       execution is successful.  */
      50    if (pid != -1)
      51      FAIL_EXIT1 ("posix_spawn returned pid != -1 (%i)", (int) pid);
      52  
      53    /* Check if no child is actually created.  */
      54    ret = waitpid (-1, NULL, 0);
      55    if (ret != -1 || errno != ECHILD)
      56      FAIL_EXIT1 ("waitpid: %m)");
      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    ret = waitpid (-1, NULL, 0);
      72    if (ret != -1 || errno != ECHILD)
      73      FAIL_EXIT1 ("waitpid: %m)");
      74  
      75    return 0;
      76  }
      77  
      78  #include <support/test-driver.c>