* pivot_root.c - Change root file system. Based on util-linux 2.10s
*
* busyboxed by Evin Robertson
+ * pivot_root syscall stubbed by Erik Andersen, so it will compile
+ * regardless of the kernel being used.
+ *
+ * Licensed under GPLv2, see file LICENSE in this source tree.
*/
-#include "busybox.h"
-#include <stdlib.h>
-#include <stdio.h>
-#include <sys/syscall.h>
-#include <linux/unistd.h>
-#ifndef __NR_pivot_root
-#error Sorry, but this kernel does not support the pivot_root syscall
-#endif
+//usage:#define pivot_root_trivial_usage
+//usage: "NEW_ROOT PUT_OLD"
+//usage:#define pivot_root_full_usage "\n\n"
+//usage: "Move the current root file system to PUT_OLD and make NEW_ROOT\n"
+//usage: "the new root file system"
-static _syscall2(int,pivot_root,const char *,new_root,const char *,put_old)
+#include "libbb.h"
+extern int pivot_root(const char * new_root,const char * put_old);
+int pivot_root_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int pivot_root_main(int argc, char **argv)
{
- if (argc != 3)
- usage(pivot_root_usage);
-
- if (pivot_root(argv[1],argv[2]) < 0)
- perror_msg_and_die("pivot_root");
+ if (argc != 3)
+ bb_show_usage();
- return EXIT_SUCCESS;
+ if (pivot_root(argv[1], argv[2]) < 0) {
+ /* prints "pivot_root: <strerror text>" */
+ bb_perror_nomsg_and_die();
+ }
+ return EXIT_SUCCESS;
}
-
-
-/*
-Local Variables:
-c-file-style: "linux"
-c-basic-offset: 4
-tab-width: 4
-End:
-*/