source: MondoRescue/branches/stable/mindi-busybox/coreutils/chroot.c @ 821

Last change on this file since 821 was 821, checked in by Bruno Cornec, 14 years ago

Addition of busybox 1.2.1 as a mindi-busybox new package
This should avoid delivering binary files in mindi not built there (Fedora and Debian are quite serious about that)

File size: 805 bytes
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 tarball for details.
8 */
9
10/* BB_AUDIT SUSv3 N/A -- Matches GNU behavior. */
11
12#include <stdlib.h>
13#include <stdio.h>
14#include <unistd.h>
15#include <errno.h>
16#include "busybox.h"
17
18int chroot_main(int argc, char **argv)
19{
20    if (argc < 2) {
21        bb_show_usage();
22    }
23
24    ++argv;
25    if (chroot(*argv)) {
26        bb_perror_msg_and_die("cannot change root directory to %s", *argv);
27    }
28    bb_xchdir("/");
29
30    ++argv;
31    if (argc == 2) {
32        argv -= 2;
33        if (!(*argv = getenv("SHELL"))) {
34            *argv = (char *) DEFAULT_SHELL;
35        }
36        argv[1] = (char *) "-i";
37    }
38
39    execvp(*argv, argv);
40    bb_perror_msg_and_die("cannot execute %s", *argv);
41}
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