1  /* Create a subprocess.
       2     Copyright (C) 2019-2023 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  #ifndef SUPPORT_SUBPROCESS_H
      20  #define SUPPORT_SUBPROCESS_H
      21  
      22  #include <sys/types.h>
      23  
      24  struct support_subprocess
      25  {
      26    int stdout_pipe[2];
      27    int stderr_pipe[2];
      28    pid_t pid;
      29  };
      30  
      31  /* Invoke CALLBACK (CLOSURE) in a subprocess created with fork and return
      32     its PID, a pipe redirected to STDOUT, and a pipe redirected to STDERR.  */
      33  struct support_subprocess support_subprocess
      34    (void (*callback) (void *), void *closure);
      35  
      36  /* Issue FILE with ARGV arguments by using posix_spawn and return is PID, a
      37     pipe redirected to STDOUT, and a pipe redirected to STDERR.  */
      38  struct support_subprocess support_subprogram
      39    (const char *file, char *const argv[]);
      40  
      41  /* Invoke program FILE with ARGV arguments by using posix_spawn and wait for it
      42     to complete.  Return program exit status.  */
      43  int support_subprogram_wait
      44    (const char *file, char *const argv[]);
      45  
      46  /* Wait for the subprocess indicated by PROC::PID.  Return the status
      47     indicate by waitpid call.  */
      48  int support_process_wait (struct support_subprocess *proc);
      49  
      50  /* Terminate the subprocess indicated by PROC::PID, first with a SIGTERM and
      51     then with a SIGKILL.  Return the status as for waitpid call.  */
      52  int support_process_terminate (struct support_subprocess *proc);
      53  
      54  #endif