X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=coreutils%2Fchroot.c;h=fcd70f21a8bcfe9e07f3f449c592cde17ba96527;hb=ec1a4b5a521b5adf295bc757c25231910f8c854b;hp=ca0bfcf3fbc6c58a3506b5c2f36b8049f1273b83;hpb=cc8ed39b240180b58810784f844e253263594ac3;p=oweals%2Fbusybox.git

diff --git a/coreutils/chroot.c b/coreutils/chroot.c
index ca0bfcf3f..fcd70f21a 100644
--- a/coreutils/chroot.c
+++ b/coreutils/chroot.c
@@ -1,32 +1,38 @@
-#include "internal.h"
-#include <stdio.h>
-#include <unistd.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. */
 
-const char chroot_usage[] = "chroot directory [command]\n"
-  "Run a command with special root directory.\n";
+#include "busybox.h"
 
-extern int
-chroot_main (struct FileInfo *i, int argc, char **argv)
+int chroot_main(int argc, char **argv);
+int chroot_main(int argc, char **argv)
 {
-  char *prog;
+	if (argc < 2) {
+		bb_show_usage();
+	}
 
-  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;
+	++argv;
+	if (chroot(*argv)) {
+		bb_perror_msg_and_die("cannot change root directory to %s", *argv);
+	}
+	xchdir("/");
+
+	++argv;
+	if (argc == 2) {
+		argv -= 2;
+		if (!(*argv = getenv("SHELL"))) {
+			*argv = (char *) DEFAULT_SHELL;
+		}
+		argv[1] = (char *) "-i";
+	}
+
+	BB_EXECVP(*argv, argv);
+	bb_perror_msg_and_die("cannot execute %s", *argv);
 }