-#include "internal.h"
+/* vi: set sw=4 ts=4: */
+/*
+ * Mini chroot implementation for busybox
+ *
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ */
+
+/* BB_AUDIT SUSv3 N/A -- Matches GNU behavior. */
+
+#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
+#include <errno.h>
+#include "busybox.h"
+int chroot_main(int argc, char **argv)
+{
+ if (argc < 2) {
+ bb_show_usage();
+ }
-const char chroot_usage[] = "chroot directory [command]\n"
- "Run a command with special root directory.\n";
+ ++argv;
+ if (chroot(*argv)) {
+ bb_perror_msg_and_die("cannot change root directory to %s", *argv);
+ }
+ bb_xchdir("/");
-extern int
-chroot_main (struct FileInfo *i, int argc, char **argv)
-{
- char *prog;
+ ++argv;
+ if (argc == 2) {
+ argv -= 2;
+ if (!(*argv = getenv("SHELL"))) {
+ *argv = (char *) DEFAULT_SHELL;
+ }
+ argv[1] = (char *) "-i";
+ }
- if (chroot (argv[1]))
- {
- name_and_error ("cannot chroot to that directory");
- return 1;
- }
- if (argc > 2)
- {
- execvp (argv[2], argv + 2);
- }
- else
- {
- prog = getenv ("SHELL");
- if (!prog)
- prog = "/bin/sh";
- execlp (prog, prog, NULL);
- }
- name_and_error ("cannot exec");
- return 1;
+ execvp(*argv, argv);
+ bb_perror_msg_and_die("cannot execute %s", *argv);
}