/* Creation of subprocesses, communicating via pipes.
- Copyright (C) 2001-2003, 2006, 2008-2009 Free Software Foundation, Inc.
+ Copyright (C) 2001-2003, 2006, 2008-2010 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
one or two file descriptors for communication with the subprocess.
If the subprocess creation fails: if exit_on_error is true, the main
process exits with an error message; otherwise, an error message is given
- if null_stderr is false, then -1 is returned and fd[] remain uninitialized.
+ if null_stderr is false, then -1 is returned, with errno set, and fd[]
+ remain uninitialized.
After finishing communication, the caller should call wait_subprocess()
to get rid of the subprocess in the process table.
* signal and the EPIPE error code.
*/
extern pid_t create_pipe_out (const char *progname,
- const char *prog_path, char **prog_argv,
- const char *prog_stdout, bool null_stderr,
- bool slave_process, bool exit_on_error,
- int fd[1]);
+ const char *prog_path, char **prog_argv,
+ const char *prog_stdout, bool null_stderr,
+ bool slave_process, bool exit_on_error,
+ int fd[1]);
/* Open a pipe for input from a child process.
* The child's stdin comes from a file.
*
*/
extern pid_t create_pipe_in (const char *progname,
- const char *prog_path, char **prog_argv,
- const char *prog_stdin, bool null_stderr,
- bool slave_process, bool exit_on_error,
- int fd[1]);
+ const char *prog_path, char **prog_argv,
+ const char *prog_stdin, bool null_stderr,
+ bool slave_process, bool exit_on_error,
+ int fd[1]);
/* Open a bidirectional pipe.
*
* input. But you are currently busy reading from it.
*/
extern pid_t create_pipe_bidi (const char *progname,
- const char *prog_path, char **prog_argv,
- bool null_stderr,
- bool slave_process, bool exit_on_error,
- int fd[2]);
+ const char *prog_path, char **prog_argv,
+ bool null_stderr,
+ bool slave_process, bool exit_on_error,
+ int fd[2]);
/* The name of the "always silent" device. */
#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__