*
* busyboxed by Evin Robertson
* pivot_root syscall stubbed by Erik Andersen, so it will compile
- * regardless of the kernel being used.
+ * regardless of the kernel being used.
+ *
+ * Licensed under GPLv2, see file LICENSE in this source tree.
*/
-#include <stdlib.h>
-#include <stdio.h>
-#include <errno.h>
-#include <sys/syscall.h>
-#include <linux/unistd.h>
-#include "busybox.h"
-#ifndef __NR_pivot_root
-#warning This kernel does not support the pivot_root syscall
-#warning The pivot_root system call is being stubbed out...
-int pivot_root(const char * new_root,const char * put_old)
-{
- /* BusyBox was compiled against a kernel that did not support
- * the pivot_root system call. To make this application work,
- * you will need to recompile with a kernel supporting the
- * pivot_root system call.
- */
- fprintf(stderr, "\n\nTo make this application work, you will need to recompile\n");
- fprintf(stderr, "with a kernel supporting the pivot_root system call. -Erik\n\n");
- errno=ENOSYS;
- return -1;
-}
-#else
-static _syscall2(int,pivot_root,const char *,new_root,const char *,put_old)
-#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"
+#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)
- show_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:
-*/