source: branches/3.2/mindi-busybox/coreutils/chroot.c @ 3232

Last change on this file since 3232 was 3232, checked in by Bruno Cornec, 7 years ago
  • Update mindi-busybox to 1.21.1
File size: 1.2 KB
Line 
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
27int chroot_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
28int 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}
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