* Mini chroot implementation for busybox
*
*
- * Copyright (C) 1999 by Lineo, inc.
+ * 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
*
*/
-#include "internal.h"
#include <stdlib.h>
#include <stdio.h>
+#include <unistd.h>
#include <errno.h>
-
-
-static const char chroot_usage[] = "chroot NEWROOT [COMMAND...]\n\n"
-
- "Run COMMAND with root directory set to NEWROOT.\n";
-
-
+#include "busybox.h"
int chroot_main(int argc, char **argv)
{
+ char *prog;
+
if ((argc < 2) || (**(argv + 1) == '-')) {
- usage(chroot_usage);
+ show_usage();
}
argc--;
argv++;
if (chroot(*argv) || (chdir("/"))) {
- fprintf(stderr, "chroot: cannot change root directory to %s: %s\n",
- *argv, strerror(errno));
- exit(FALSE);
+ perror_msg_and_die("cannot change root directory to %s", *argv);
}
argc--;
argv++;
if (argc >= 1) {
- fprintf(stderr, "command: %s\n", *argv);
+ prog = *argv;
execvp(*argv, argv);
} else {
- char *prog;
-
+#ifndef BB_SH
prog = getenv("SHELL");
if (!prog)
prog = "/bin/sh";
execlp(prog, prog, NULL);
+#else
+ shell_main(argc, argv);
+ return EXIT_SUCCESS;
+#endif
}
- fprintf(stderr, "chroot: cannot execute %s: %s\n",
- *argv, strerror(errno));
- exit(FALSE);
+ perror_msg_and_die("cannot execute %s", prog);
+
}