1 /* vi: set sw=4 ts=4: */
3 * pivot_root.c - Change root file system. Based on util-linux 2.10s
5 * busyboxed by Evin Robertson
6 * pivot_root syscall stubbed by Erik Andersen, so it will compile
7 * regardless of the kernel being used.
9 * Licensed under GPLv2, see file LICENSE in this source tree.
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"
20 extern int pivot_root(const char * new_root,const char * put_old);
22 int pivot_root_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
23 int pivot_root_main(int argc, char **argv)
28 if (pivot_root(argv[1], argv[2]) < 0) {
29 /* prints "pivot_root: <strerror text>" */
30 bb_perror_nomsg_and_die();