| /* vi: set sw=4 ts=4: */ |
| /* |
| * Mini chroot implementation for busybox |
| * |
| * |
| * Copyright (C) 1999,2000,2001 by Lineo, inc. |
| * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| * |
| */ |
| |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <unistd.h> |
| #include <errno.h> |
| #include "busybox.h" |
| |
| int chroot_main(int argc, char **argv) |
| { |
| char *prog; |
| |
| if ((argc < 2) || (**(argv + 1) == '-')) { |
| show_usage(); |
| } |
| argc--; |
| argv++; |
| |
| if (chroot(*argv) || (chdir("/"))) { |
| perror_msg_and_die("cannot change root directory to %s", *argv); |
| } |
| |
| argc--; |
| argv++; |
| if (argc >= 1) { |
| prog = *argv; |
| execvp(*argv, argv); |
| } else { |
| #if defined(BB_SH) && defined BB_FEATURE_SH_STANDALONE_SHELL |
| char shell[] = "/bin/sh"; |
| char *shell_argv[2] = { shell, NULL }; |
| applet_name = shell; |
| shell_main(1, shell_argv); |
| return EXIT_SUCCESS; |
| #else |
| prog = getenv("SHELL"); |
| if (!prog) |
| prog = "/bin/sh"; |
| execlp(prog, prog, NULL); |
| #endif |
| } |
| perror_msg_and_die("cannot execute %s", prog); |
| |
| } |
| |
| |
| /* |
| Local Variables: |
| c-file-style: "linux" |
| c-basic-offset: 4 |
| tab-width: 4 |
| End: |
| */ |