diff options
Diffstat (limited to 'chroot.c')
-rw-r--r-- | chroot.c | 73 |
1 files changed, 53 insertions, 20 deletions
@@ -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); } + |