+/* vi: set sw=4 ts=4: */
/*
* Mini chroot implementation for busybox
*
- * Copyright (C) 1998 by Erik Andersen <andersee@debian.org>
+ *
+ * Copyright (C) 1999,2000,2001 by Lineo, inc.
+ * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
*
*/
-#include "internal.h"
+#include "busybox.h"
+#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
-
-
-static const char chroot_usage[] = "NEWROOT [COMMAND...]\n"
-"Run COMMAND with root directory set to NEWROOT.\n";
-
-
+#include <errno.h>
int chroot_main(int argc, char **argv)
{
- if (argc < 2) {
- fprintf(stderr, "Usage: %s %s", *argv, chroot_usage);
- return( FALSE);
- }
- argc--;
- argv++;
+ char *prog;
- fprintf(stderr, "new root: %s\n", *argv);
-
- if (chroot (*argv) || (chdir ("/"))) {
- perror("cannot chroot");
- return( FALSE);
- }
+ if ((argc < 2) || (**(argv + 1) == '-')) {
+ show_usage();
+ }
+ argc--;
+ argv++;
+
+ if (chroot(*argv) || (chdir("/"))) {
+ perror_msg_and_die("cannot change root directory to %s", *argv);
+ }
+
+ argc--;
+ argv++;
+ if (argc >= 1) {
+ prog = *argv;
+ execvp(*argv, argv);
+ } else {
+#ifndef BB_SH
+ prog = getenv("SHELL");
+ if (!prog)
+ prog = "/bin/sh";
+ execlp(prog, prog, NULL);
+#else
+ shell_main(argc, argv);
+ return EXIT_SUCCESS;
+#endif
+ }
+ perror_msg_and_die("cannot execute %s", prog);
- argc--;
- argv++;
- if (argc >= 1) {
- fprintf(stderr, "command: %s\n", *argv);
- execvp (*argv, argv);
- }
- else {
- char *prog;
- prog = getenv ("SHELL");
- if (!prog)
- prog = "/bin/sh";
- fprintf(stderr, "no command. running: %s\n", prog);
- execlp (prog, prog, NULL);
- }
- perror("cannot exec");
- return(FALSE);
}
+
+/*
+Local Variables:
+c-file-style: "linux"
+c-basic-offset: 4
+tab-width: 4
+End:
+*/