mirror of
https://github.com/topjohnwu/ndk-busybox.git
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54 lines
1.4 KiB
C
54 lines
1.4 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) 1999-2003 by Erik Andersen <andersen@codepoet.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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/* BB_AUDIT SUSv3 N/A -- Matches GNU behavior. */
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <errno.h>
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#include "busybox.h"
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int chroot_main(int argc, char **argv)
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{
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if (argc < 2) {
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bb_show_usage();
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}
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++argv;
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if (chroot(*argv) || (chdir("/"))) {
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bb_perror_msg_and_die("cannot change root directory to %s", *argv);
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}
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++argv;
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if (argc == 2) {
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argv -= 2;
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if (!(*argv = getenv("SHELL"))) {
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*argv = (char *) DEFAULT_SHELL;
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}
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argv[1] = (char *) "-i";
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}
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execvp(*argv, argv);
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bb_perror_msg_and_die("cannot execute %s", *argv);
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}
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