pidfile.c: not used anymore

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

diff --git a/coreutils/chroot.c b/coreutils/chroot.c
index 15f44688103c73fe880a21a533ddf85e3f578fbe..fcd70f21a8bcfe9e07f3f449c592cde17ba96527 100644 (file)
--- a/coreutils/chroot.c
+++ b/coreutils/chroot.c
@@ -1,64 +1,38 @@
+/* vi: set sw=4 ts=4: */
 /*
  * Mini chroot implementation for busybox
  *
- * Copyright (C) 1998 by Erik Andersen <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
- * 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
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
  *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
  */
 
-#include "internal.h"
-#include <stdlib.h>
-#include <stdio.h>
-#include <errno.h>
-
-
-static const char chroot_usage[] = "NEWROOT [COMMAND...]\n"
-"Run COMMAND with root directory set to NEWROOT.\n";
-
+/* BB_AUDIT SUSv3 N/A -- Matches GNU behavior. */
 
+#include "busybox.h"
 
+int chroot_main(int argc, char **argv);
 int chroot_main(int argc, char **argv)
 {
-    if ( (argc < 2) || (**(argv+1) == '-') ) {
-       usage( chroot_usage);
-    }
-    argc--;
-    argv++;
-
-    if (chroot (*argv) || (chdir ("/"))) {
-       fprintf(stderr, "chroot: cannot change root directory to %s: %s\n",
-               *argv, strerror(errno));
-       exit( FALSE);
-    }
-
-    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";
-       execlp (prog, prog, NULL);
-    }
-    fprintf(stderr, "chroot: cannot execute %s: %s\n",
-               *argv, strerror(errno));
-    exit( FALSE);
+       if (argc < 2) {
+               bb_show_usage();
+       }
+
+       ++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);
 }
-