diff options
Diffstat (limited to 'chroot.c')
| -rw-r--r-- | chroot.c | 73 |
1 files changed, 53 insertions, 20 deletions
| @@ -1,32 +1,65 @@ | |||
| 1 | /* | ||
| 2 | * Mini chroot implementation for busybox | ||
| 3 | * | ||
| 4 | * Copyright (C) 1998 by Erik Andersen <andersee@debian.org> | ||
| 5 | * | ||
| 6 | * This program is free software; you can redistribute it and/or modify | ||
| 7 | * it under the terms of the GNU General Public License as published by | ||
| 8 | * the Free Software Foundation; either version 2 of the License, or | ||
| 9 | * (at your option) any later version. | ||
| 10 | * | ||
| 11 | * This program is distributed in the hope that it will be useful, | ||
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 14 | * General Public License for more details. | ||
| 15 | * | ||
| 16 | * You should have received a copy of the GNU General Public License | ||
| 17 | * along with this program; if not, write to the Free Software | ||
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
| 19 | * | ||
| 20 | */ | ||
| 21 | |||
| 1 | #include "internal.h" | 22 | #include "internal.h" |
| 2 | #include <stdio.h> | 23 | #include <stdio.h> |
| 3 | #include <unistd.h> | 24 | #include <unistd.h> |
| 4 | 25 | ||
| 5 | 26 | ||
| 6 | const char chroot_usage[] = "chroot directory [command]\n" | 27 | static const char chroot_usage[] = "NEWROOT [COMMAND...]\n" |
| 7 | "Run a command with special root directory.\n"; | 28 | "Run COMMAND with root directory set to NEWROOT.\n"; |
| 29 | |||
| 30 | |||
| 8 | 31 | ||
| 9 | extern int | 32 | int chroot_main(int argc, char **argv) |
| 10 | chroot_main (struct FileInfo *i, int argc, char **argv) | ||
| 11 | { | 33 | { |
| 12 | char *prog; | 34 | if (argc < 2) { |
| 35 | fprintf(stderr, "Usage: %s %s", *argv, chroot_usage); | ||
| 36 | return( FALSE); | ||
| 37 | } | ||
| 38 | argc--; | ||
| 39 | argv++; | ||
| 13 | 40 | ||
| 14 | if (chroot (argv[1])) | 41 | fprintf(stderr, "new root: %s\n", *argv); |
| 15 | { | 42 | |
| 16 | name_and_error ("cannot chroot to that directory"); | 43 | if (chroot (*argv) || (chdir ("/"))) { |
| 17 | return 1; | 44 | perror("cannot chroot"); |
| 45 | return( FALSE); | ||
| 18 | } | 46 | } |
| 19 | if (argc > 2) | 47 | |
| 20 | { | 48 | argc--; |
| 21 | execvp (argv[2], argv + 2); | 49 | argv++; |
| 50 | if (argc >= 1) { | ||
| 51 | fprintf(stderr, "command: %s\n", *argv); | ||
| 52 | execvp (*argv, argv); | ||
| 22 | } | 53 | } |
| 23 | else | 54 | else { |
| 24 | { | 55 | char *prog; |
| 25 | prog = getenv ("SHELL"); | 56 | prog = getenv ("SHELL"); |
| 26 | if (!prog) | 57 | if (!prog) |
| 27 | prog = "/bin/sh"; | 58 | prog = "/bin/sh"; |
| 28 | execlp (prog, prog, NULL); | 59 | fprintf(stderr, "no command. running: %s\n", prog); |
| 60 | execlp (prog, prog, NULL); | ||
| 29 | } | 61 | } |
| 30 | name_and_error ("cannot exec"); | 62 | perror("cannot exec"); |
| 31 | return 1; | 63 | return(FALSE); |
| 32 | } | 64 | } |
| 65 | |||