1 /* vi: set sw=4 ts=4: */
3 * Rexec program for system have fork() as vfork() with foreground option
5 * Copyright (C) Vladimir N. Oleynik <dzo@simtreas.ru>
6 * Copyright (C) 2003 Russ Dill <Russ.Dill@asu.edu>
8 * daemon() portion taken from uClibc:
10 * Copyright (c) 1991, 1993
11 * The Regents of the University of California. All rights reserved.
13 * Modified for uClibc by Erik Andersen <andersee@debian.org>
15 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
26 static void vfork_daemon_common(int nochdir, int noclose)
35 if (!noclose && (fd = open(bb_dev_null, O_RDWR, 0)) != -1) {
36 dup2(fd, STDIN_FILENO);
37 dup2(fd, STDOUT_FILENO);
38 dup2(fd, STDERR_FILENO);
44 void vfork_daemon(int nochdir, int noclose)
46 vfork_daemon_common(nochdir, noclose);
52 void vfork_daemon_rexec(int nochdir, int noclose,
53 int argc, char **argv, char *foreground_opt)
58 vfork_daemon_common(nochdir, noclose);
60 vfork_args = xcalloc(sizeof(char *), argc + 3);
61 vfork_args[a++] = "/bin/busybox";
63 vfork_args[a++] = *argv;
66 vfork_args[a] = foreground_opt;
69 /* Make certain we are not a session leader, or else we
70 * might reacquire a controlling terminal */
73 execv(vfork_args[0], vfork_args);
74 bb_perror_msg_and_die("execv %s", vfork_args[0]);
76 bb_perror_msg_and_die("vfork");