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/* vi: set sw=4 ts=4: */
/*
* Mini chroot implementation for busybox
*
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
*
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
//config:config CHROOT
//config: bool "chroot"
//config: default y
//config: help
//config: chroot is used to change the root directory and run a command.
//config: The default command is `/bin/sh'.
//applet:IF_CHROOT(APPLET(chroot, BB_DIR_USR_SBIN, BB_SUID_DROP))
//kbuild:lib-$(CONFIG_CHROOT) += chroot.o
/* BB_AUDIT SUSv3 N/A -- Matches GNU behavior. */
//usage:#define chroot_trivial_usage
//usage: "NEWROOT [PROG ARGS]"
//usage:#define chroot_full_usage "\n\n"
//usage: "Run PROG with root directory set to NEWROOT"
//usage:
//usage:#define chroot_example_usage
//usage: "$ ls -l /bin/ls\n"
//usage: "lrwxrwxrwx 1 root root 12 Apr 13 00:46 /bin/ls -> /BusyBox\n"
//usage: "# mount /dev/hdc1 /mnt -t minix\n"
//usage: "# chroot /mnt\n"
//usage: "# ls -l /bin/ls\n"
//usage: "-rwxr-xr-x 1 root root 40816 Feb 5 07:45 /bin/ls*\n"
#include "libbb.h"
int chroot_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int chroot_main(int argc UNUSED_PARAM, char **argv)
{
++argv;
if (!*argv)
bb_show_usage();
xchroot(*argv);
++argv;
if (!*argv) { /* no 2nd param (PROG), use shell */
argv -= 2;
argv[0] = (char *) get_shell_name();
argv[1] = (char *) "-i"; /* GNU coreutils 8.4 compat */
/*argv[2] = NULL; - already is */
}
BB_EXECVP_or_die(argv);
}
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