view toys/setsid.c @ 551:2548e6e590b2

Add string to mode_t parser added new function string_to_mode(char *m_string, mode_t base) which parses a given string and converts it to a mode_t. If either + or - are part of m_string the permissions are either added or removed from base. Currently support for permision copy is missing (e.g. g=u), but all other flags should work. Format for m_string: either symbolic modes or octal representation. symbolic modes: [auog][[+-=][rwxst]*] examples: string_to_mode("u=rwx,g=rw,o=r", 0); string_to_mode("a-x", 0777); string_to_mode("0744", 0);
author Daniel Walter <d.walter@0x90.at>
date Mon, 19 Mar 2012 19:57:56 -0500
parents 878b94b32866
children
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/* vi: set sw=4 ts=4:
 *
 * setsid.c - Run program in a new session ID.
 *
 * Copyright 2006 Rob Landley <rob@landley.net>
 *
 * Not in SUSv4.

USE_SETSID(NEWTOY(setsid, "^<1t", TOYFLAG_USR|TOYFLAG_BIN))

config SETSID
	bool "setsid"
	default y
	help
	  usage: setsid [-t] command [args...]

	  Run process in a new session.

	  -t	Grab tty (become foreground process, receiving keyboard signals)
*/

#include "toys.h"

void setsid_main(void)
{
	while (setsid()<0)
		if (vfork()) _exit(0);
	if (toys.optflags) {
		setpgid(0,0);
		tcsetpgrp(0, getpid());
	}
	xexec(toys.optargs);
}