1 /* vi: set sw=4 ts=4: */
3 * Mini chroot implementation for busybox
6 * Copyright (C) 1999,2000 by Lineo, inc.
7 * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
31 static const char chroot_usage[] = "chroot NEWROOT [COMMAND...]\n"
32 #ifndef BB_FEATURE_TRIVIAL_HELP
33 "\nRun COMMAND with root directory set to NEWROOT.\n"
39 int chroot_main(int argc, char **argv)
41 if ((argc < 2) || (**(argv + 1) == '-')) {
47 if (chroot(*argv) || (chdir("/"))) {
48 fprintf(stderr, "chroot: cannot change root directory to %s: %s\n",
49 *argv, strerror(errno));
56 fprintf(stderr, "command: %s\n", *argv);
61 prog = getenv("SHELL");
64 execlp(prog, prog, NULL);
66 fprintf(stderr, "chroot: cannot execute %s: %s\n",
67 *argv, strerror(errno));