lib/execute.h

/* Creation of autonomous subprocesses.
   Copyright (C) 2001-2003, 2008-2021 Free Software Foundation, Inc.
   Written by Bruno Haible <haible@clisp.cons.org>, 2001.

   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */

#ifndef _EXECUTE_H
#define _EXECUTE_H

#include <stdbool.h>

/* Execute a command, optionally redirecting any of the three standard file
   descriptors to /dev/null.  Return its exit code.
   If it didn't terminate correctly, exit if exit_on_error is true, otherwise
   return 127.
   progname is the name of the program to be executed by the subprocess, used
   for error messages.
   prog_path is the file name of the program to be executed by the subprocess.
   If it contains no slashes, a search is conducted in $PATH.  An operating
   system dependent suffix is added, if necessary.
   prog_argv is the array of strings that the subprocess shall receive in
   argv[].  It is a NULL-terminated array.  prog_argv[0] should normally be
   identical to prog_path.
   If directory is not NULL, the command is executed in that directory.  If
   prog_path is a relative file name, it resolved before changing to that
   directory.  The current directory of the current process remains unchanged.
   If ignore_sigpipe is true, consider a subprocess termination due to SIGPIPE
   as equivalent to a success.  This is suitable for processes whose only
   purpose is to write to standard output.
   If slave_process is true, the child process will be terminated when its
   creator receives a catchable fatal signal.
   If termsigp is not NULL, *termsig will be set to the signal that terminated
   the subprocess (if supported by the platform: not on native Windows
   platforms), otherwise 0.
   It is recommended that no signal is blocked or ignored while execute()
   is called.  See spawn-pipe.h for the reason.  */
extern int execute (const char *progname,
                    const char *prog_path, const char * const *prog_argv,
                    const char *directory,
                    bool ignore_sigpipe,
                    bool null_stdin, bool null_stdout, bool null_stderr,
                    bool slave_process, bool exit_on_error,
                    int *termsigp);

#endif /* _EXECUTE_H */