Move start_stop_daemon to debianutils.

[oweals/busybox.git] / coreutils / chroot.c

diff --git a/coreutils/chroot.c b/coreutils/chroot.c
index ca0bfcf3fbc6c58a3506b5c2f36b8049f1273b83..5562e58c8090dc4e100bb29cbe8de94da45b7f70 100644 (file)
--- a/coreutils/chroot.c
+++ b/coreutils/chroot.c
@@ -1,32 +1,53 @@
-#include "internal.h"
+/* vi: set sw=4 ts=4: */
+/*
+ * Mini chroot implementation for busybox
+ *
+ * Copyright (C) 1999-2003 by Erik Andersen <andersen@codepoet.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
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+/* 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) || (chdir("/"))) {
+               bb_perror_msg_and_die("cannot change root directory to %s", *argv);
+       }
 
-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 *) "/bin/sh";
+               }
+               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);
 }