55 lines
1.5 KiB
C
55 lines
1.5 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Mini chroot implementation for busybox
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*
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* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
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*
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* Licensed under GPLv2 or later, see file LICENSE in this source tree.
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*/
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//config:config CHROOT
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//config: bool "chroot (3.7 kb)"
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//config: default y
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//config: help
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//config: chroot is used to change the root directory and run a command.
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//config: The default command is '/bin/sh'.
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//applet:IF_CHROOT(APPLET(chroot, BB_DIR_USR_SBIN, BB_SUID_DROP))
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//kbuild:lib-$(CONFIG_CHROOT) += chroot.o
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/* BB_AUDIT SUSv3 N/A -- Matches GNU behavior. */
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//usage:#define chroot_trivial_usage
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//usage: "NEWROOT [PROG ARGS]"
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//usage:#define chroot_full_usage "\n\n"
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//usage: "Run PROG with root directory set to NEWROOT"
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//usage:
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//usage:#define chroot_example_usage
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//usage: "$ ls -l /bin/ls\n"
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//usage: "lrwxrwxrwx 1 root root 12 Apr 13 00:46 /bin/ls -> /BusyBox\n"
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//usage: "# mount /dev/hdc1 /mnt -t minix\n"
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//usage: "# chroot /mnt\n"
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//usage: "# ls -l /bin/ls\n"
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//usage: "-rwxr-xr-x 1 root root 40816 Feb 5 07:45 /bin/ls*\n"
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#include "libbb.h"
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int chroot_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int chroot_main(int argc UNUSED_PARAM, char **argv)
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{
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++argv;
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if (!*argv)
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bb_show_usage();
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xchroot(*argv);
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++argv;
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if (!*argv) { /* no 2nd param (PROG), use shell */
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argv -= 2;
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argv[0] = (char *) get_shell_name();
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argv[1] = (char *) "-i"; /* GNU coreutils 8.4 compat */
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/*argv[2] = NULL; - already is */
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}
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BB_EXECVP_or_die(argv);
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}
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