LXR busybox/util-linux/pivot

   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) MAIN_EXTERNALLY_VISIBLE;
  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