source: branches/3.2/mindi-busybox/util-linux/pivot_root.c @ 3232

Last change on this file since 3232 was 3232, checked in by bruno, 5 years ago
  • Update mindi-busybox to 1.21.1
File size: 939 bytes
Line 
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 GPLv2, see file LICENSE in this source tree.
10 */
11
12//usage:#define pivot_root_trivial_usage
13//usage:       "NEW_ROOT PUT_OLD"
14//usage:#define pivot_root_full_usage "\n\n"
15//usage:       "Move the current root file system to PUT_OLD and make NEW_ROOT\n"
16//usage:       "the new root file system"
17
18#include "libbb.h"
19
20extern int pivot_root(const char * new_root,const char * put_old);
21
22int pivot_root_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
23int pivot_root_main(int argc, char **argv)
24{
25    if (argc != 3)
26        bb_show_usage();
27
28    if (pivot_root(argv[1], argv[2]) < 0) {
29        /* prints "pivot_root: <strerror text>" */
30        bb_perror_nomsg_and_die();
31    }
32
33    return EXIT_SUCCESS;
34}
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