Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 1 | /* vi: set sw=4 ts=4: */ |
Eric Andersen | 2b69c40 | 1999-10-05 22:58:32 +0000 | [diff] [blame] | 2 | /* |
| 3 | * Mini chroot implementation for busybox |
| 4 | * |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 5 | * |
Erik Andersen | 61677fe | 2000-04-13 01:18:56 +0000 | [diff] [blame] | 6 | * Copyright (C) 1999,2000 by Lineo, inc. |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 7 | * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org> |
Eric Andersen | 2b69c40 | 1999-10-05 22:58:32 +0000 | [diff] [blame] | 8 | * |
| 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. |
| 13 | * |
| 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. |
| 18 | * |
| 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 |
| 22 | * |
| 23 | */ |
| 24 | |
Eric Andersen | 3570a34 | 2000-09-25 21:45:58 +0000 | [diff] [blame] | 25 | #include "busybox.h" |
Eric Andersen | 2ce1edc | 1999-10-12 15:42:48 +0000 | [diff] [blame] | 26 | #include <stdlib.h> |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 27 | #include <stdio.h> |
Eric Andersen | 2ce1edc | 1999-10-12 15:42:48 +0000 | [diff] [blame] | 28 | #include <errno.h> |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 29 | |
Eric Andersen | 2b69c40 | 1999-10-05 22:58:32 +0000 | [diff] [blame] | 30 | int chroot_main(int argc, char **argv) |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 31 | { |
Eric Andersen | 808d03e | 2000-06-02 17:56:45 +0000 | [diff] [blame] | 32 | char *prog; |
| 33 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 34 | if ((argc < 2) || (**(argv + 1) == '-')) { |
| 35 | usage(chroot_usage); |
| 36 | } |
| 37 | argc--; |
| 38 | argv++; |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 39 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 40 | if (chroot(*argv) || (chdir("/"))) { |
Matt Kraai | 1fa1ade | 2000-12-18 03:57:16 +0000 | [diff] [blame] | 41 | perror_msg_and_die("cannot change root directory to %s", *argv); |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 42 | } |
Eric Andersen | 2b69c40 | 1999-10-05 22:58:32 +0000 | [diff] [blame] | 43 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 44 | argc--; |
| 45 | argv++; |
| 46 | if (argc >= 1) { |
Eric Andersen | 808d03e | 2000-06-02 17:56:45 +0000 | [diff] [blame] | 47 | prog = *argv; |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 48 | execvp(*argv, argv); |
| 49 | } else { |
Pavel Roskin | e99f750 | 2000-07-24 20:15:30 +0000 | [diff] [blame] | 50 | #ifndef BB_SH |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 51 | prog = getenv("SHELL"); |
| 52 | if (!prog) |
| 53 | prog = "/bin/sh"; |
| 54 | execlp(prog, prog, NULL); |
Pavel Roskin | e99f750 | 2000-07-24 20:15:30 +0000 | [diff] [blame] | 55 | #else |
| 56 | shell_main(argc, argv); |
Matt Kraai | 3e856ce | 2000-12-01 02:55:13 +0000 | [diff] [blame] | 57 | return EXIT_SUCCESS; |
Pavel Roskin | e99f750 | 2000-07-24 20:15:30 +0000 | [diff] [blame] | 58 | #endif |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 59 | } |
Matt Kraai | 1fa1ade | 2000-12-18 03:57:16 +0000 | [diff] [blame] | 60 | perror_msg_and_die("cannot execute %s", prog); |
Eric Andersen | 808d03e | 2000-06-02 17:56:45 +0000 | [diff] [blame] | 61 | |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 62 | } |
Erik Andersen | 029011b | 2000-03-04 21:19:32 +0000 | [diff] [blame] | 63 | |
| 64 | |
| 65 | /* |
| 66 | Local Variables: |
| 67 | c-file-style: "linux" |
| 68 | c-basic-offset: 4 |
| 69 | tab-width: 4 |
| 70 | End: |
| 71 | */ |