5c527dc57e
The applets with "<applet> [opts] PROG ARGS" API very quickly exec another program, noexec is okay for them: chpst/envdir/envuidgid/softlimit/setuidgid chroot chrt ionice nice nohup setarch/linux32/linux64 taskset cttyhack "reset" and "sulogin" applets don't have this form, but also exec another program at once, thus made noexec too. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
56 lines
1.6 KiB
C
56 lines
1.6 KiB
C
/* 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 (3.7 kb)"
|
|
//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_NOEXEC(chroot, chroot, BB_DIR_USR_SBIN, BB_SUID_DROP, chroot))
|
|
|
|
//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);
|
|
}
|