c418d482ba
This needs a second pass to: + add bb_daemon(unsigned char no_chdir, unsigned char no_close, const char*flag) + eventually globally export argc and argv, so we don't need to pass it to bb_daemon().
68 lines
1.5 KiB
C
68 lines
1.5 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* Rexec program for system have fork() as vfork() with foreground option
|
|
*
|
|
* Copyright (C) Vladimir N. Oleynik <dzo@simtreas.ru>
|
|
* Copyright (C) 2003 Russ Dill <Russ.Dill@asu.edu>
|
|
*
|
|
* daemon() portion taken from uClibc:
|
|
*
|
|
* Copyright (c) 1991, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Modified for uClibc by Erik Andersen <andersee@debian.org>
|
|
*
|
|
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
|
|
*/
|
|
|
|
#include <unistd.h>
|
|
#include <stdio.h>
|
|
#include <fcntl.h>
|
|
#include <paths.h>
|
|
#include "libbb.h"
|
|
|
|
|
|
#ifdef BB_NOMMU
|
|
void vfork_daemon_rexec(int nochdir, int noclose,
|
|
int argc, char **argv, char *foreground_opt)
|
|
{
|
|
int fd;
|
|
char **vfork_args;
|
|
int a = 0;
|
|
|
|
setsid();
|
|
|
|
if (!nochdir)
|
|
chdir("/");
|
|
|
|
if (!noclose && (fd = open(bb_dev_null, O_RDWR, 0)) != -1) {
|
|
dup2(fd, STDIN_FILENO);
|
|
dup2(fd, STDOUT_FILENO);
|
|
dup2(fd, STDERR_FILENO);
|
|
if (fd > 2)
|
|
close(fd);
|
|
}
|
|
|
|
vfork_args = xcalloc(sizeof(char *), argc + 3);
|
|
vfork_args[a++] = "/bin/busybox";
|
|
while(*argv) {
|
|
vfork_args[a++] = *argv;
|
|
argv++;
|
|
}
|
|
vfork_args[a] = foreground_opt;
|
|
switch (vfork()) {
|
|
case 0: /* child */
|
|
/* Make certain we are not a session leader, or else we
|
|
* might reacquire a controlling terminal */
|
|
if (vfork())
|
|
_exit(0);
|
|
execv(vfork_args[0], vfork_args);
|
|
bb_perror_msg_and_die("execv %s", vfork_args[0]);
|
|
case -1: /* error */
|
|
bb_perror_msg_and_die("vfork");
|
|
default: /* parent */
|
|
exit(0);
|
|
}
|
|
}
|
|
#endif /* BB_NOMMU */
|