1/* vi: set sw=4 ts=4: */
2/*
3 * pivot_root.c - Change root file system.  Based on util-linux 2.10s
4 *
5 * busyboxed by Evin Robertson
6 * pivot_root syscall stubbed by Erik Andersen, so it will compile
7 *     regardless of the kernel being used.
8 *
9 * Licensed under GPL version 2, see file LICENSE in this tarball for details.
10 */
11#include "libbb.h"
12
13extern int pivot_root(const char * new_root,const char * put_old);
14
15int pivot_root_main(int argc, char **argv);
16int pivot_root_main(int argc, char **argv)
17{
18	if (argc != 3)
19		bb_show_usage();
20
21	if (pivot_root(argv[1], argv[2]) < 0) {
22		/* prints "pivot_root: <strerror text>" */
23		bb_perror_nomsg_and_die();
24	}
25
26	return EXIT_SUCCESS;
27}
28