blob: 633e66b383e4c23a726b4200d27af4d3b213ac4a
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * Mini chroot implementation for busybox |
4 | * |
5 | * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org> |
6 | * |
7 | * Licensed under GPLv2 or later, see file LICENSE in this source tree. |
8 | */ |
9 | |
10 | /* BB_AUDIT SUSv3 N/A -- Matches GNU behavior. */ |
11 | |
12 | //usage:#define chroot_trivial_usage |
13 | //usage: "NEWROOT [PROG ARGS]" |
14 | //usage:#define chroot_full_usage "\n\n" |
15 | //usage: "Run PROG with root directory set to NEWROOT" |
16 | //usage: |
17 | //usage:#define chroot_example_usage |
18 | //usage: "$ ls -l /bin/ls\n" |
19 | //usage: "lrwxrwxrwx 1 root root 12 Apr 13 00:46 /bin/ls -> /BusyBox\n" |
20 | //usage: "# mount /dev/hdc1 /mnt -t minix\n" |
21 | //usage: "# chroot /mnt\n" |
22 | //usage: "# ls -l /bin/ls\n" |
23 | //usage: "-rwxr-xr-x 1 root root 40816 Feb 5 07:45 /bin/ls*\n" |
24 | |
25 | #include "libbb.h" |
26 | |
27 | int chroot_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
28 | int chroot_main(int argc UNUSED_PARAM, char **argv) |
29 | { |
30 | ++argv; |
31 | if (!*argv) |
32 | bb_show_usage(); |
33 | xchroot(*argv); |
34 | |
35 | ++argv; |
36 | if (!*argv) { /* no 2nd param (PROG), use shell */ |
37 | argv -= 2; |
38 | argv[0] = (char *) get_shell_name(); |
39 | argv[1] = (char *) "-i"; /* GNU coreutils 8.4 compat */ |
40 | /*argv[2] = NULL; - already is */ |
41 | } |
42 | |
43 | BB_EXECVP_or_die(argv); |
44 | } |
45 |