36 lines
913 B
C
36 lines
913 B
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* setsid.c -- execute a command in a new session
|
|
* Rick Sladkey <jrs@world.std.com>
|
|
* In the public domain.
|
|
*
|
|
* 1999-02-22 Arkadiusz Mickiewicz <misiek@pld.ORG.PL>
|
|
* - added Native Language Support
|
|
*
|
|
* 2001-01-18 John Fremlin <vii@penguinpowered.com>
|
|
* - fork in case we are process group leader
|
|
*
|
|
* 2004-11-12 Paul Fox
|
|
* - busyboxed
|
|
*/
|
|
|
|
#include "libbb.h"
|
|
|
|
int setsid_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
|
int setsid_main(int argc UNUSED_PARAM, char **argv)
|
|
{
|
|
if (!argv[1])
|
|
bb_show_usage();
|
|
|
|
/* setsid() is allowed only when we are not a process group leader.
|
|
* Otherwise our PID serves as PGID of some existing process group
|
|
* and cannot be used as PGID of a new process group. */
|
|
if (getpgrp() == getpid())
|
|
forkexit_or_rexec(argv);
|
|
|
|
setsid(); /* no error possible */
|
|
|
|
BB_EXECVP(argv[1], argv + 1);
|
|
bb_simple_perror_msg_and_die(argv[1]);
|
|
}
|