hush/coreutils/chroot.c

40 lines
802 B
C
Raw Normal View History

/* vi: set sw=4 ts=4: */
1999-10-05 22:58:32 +00:00
/*
* Mini chroot implementation for busybox
*
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
1999-10-05 22:58:32 +00:00
*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
1999-10-05 22:58:32 +00:00
*/
2003-03-19 09:13:01 +00:00
/* BB_AUDIT SUSv3 N/A -- Matches GNU behavior. */
#include "libbb.h"
1999-10-05 16:24:54 +00:00
int chroot_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
1999-10-05 22:58:32 +00:00
int chroot_main(int argc, char **argv)
1999-10-05 16:24:54 +00:00
{
2003-03-19 09:13:01 +00:00
if (argc < 2) {
bb_show_usage();
}
1999-10-05 16:24:54 +00:00
2003-03-19 09:13:01 +00:00
++argv;
if (chroot(*argv)) {
2003-03-19 09:13:01 +00:00
bb_perror_msg_and_die("cannot change root directory to %s", *argv);
}
xchdir("/");
1999-10-05 22:58:32 +00:00
2003-03-19 09:13:01 +00:00
++argv;
if (argc == 2) {
argv -= 2;
argv[0] = getenv("SHELL");
if (!argv[0]) {
argv[0] = (char *) DEFAULT_SHELL;
2003-03-19 09:13:01 +00:00
}
argv[1] = (char *) "-i";
}
BB_EXECVP(*argv, argv);
2003-03-19 09:13:01 +00:00
bb_perror_msg_and_die("cannot execute %s", *argv);
}