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-rw-r--r--chroot.c73
1 files changed, 53 insertions, 20 deletions
diff --git a/chroot.c b/chroot.c
index ca0bfcf..d395494 100644
--- a/chroot.c
+++ b/chroot.c
@@ -1,32 +1,65 @@
+/*
+ * 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
+ *
+ */
+
#include "internal.h"
#include <stdio.h>
#include <unistd.h>
-const char chroot_usage[] = "chroot directory [command]\n"
- "Run a command with special root directory.\n";
+static const char chroot_usage[] = "NEWROOT [COMMAND...]\n"
+"Run COMMAND with root directory set to NEWROOT.\n";
+
+
-extern int
-chroot_main (struct FileInfo *i, int argc, char **argv)
+int chroot_main(int argc, char **argv)
{
- char *prog;
+ if (argc < 2) {
+ fprintf(stderr, "Usage: %s %s", *argv, chroot_usage);
+ return( FALSE);
+ }
+ argc--;
+ argv++;
- if (chroot (argv[1]))
- {
- name_and_error ("cannot chroot to that directory");
- return 1;
+ fprintf(stderr, "new root: %s\n", *argv);
+
+ if (chroot (*argv) || (chdir ("/"))) {
+ perror("cannot chroot");
+ return( FALSE);
}
- if (argc > 2)
- {
- execvp (argv[2], argv + 2);
+
+ argc--;
+ argv++;
+ if (argc >= 1) {
+ fprintf(stderr, "command: %s\n", *argv);
+ execvp (*argv, argv);
}
- else
- {
- prog = getenv ("SHELL");
- if (!prog)
- prog = "/bin/sh";
- execlp (prog, prog, NULL);
+ else {
+ char *prog;
+ prog = getenv ("SHELL");
+ if (!prog)
+ prog = "/bin/sh";
+ fprintf(stderr, "no command. running: %s\n", prog);
+ execlp (prog, prog, NULL);
}
- name_and_error ("cannot exec");
- return 1;
+ perror("cannot exec");
+ return(FALSE);
}
+