Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 1 | /* vi: set sw=4 ts=4: */ |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 2 | /* |
| 3 | * Mini mknod implementation for busybox |
| 4 | * |
| 5 | * Copyright (C) 1995, 1996 by Bruce Perens <bruce@pixar.com>. |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 15 | * General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 20 | * |
| 21 | */ |
| 22 | |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 23 | #include "internal.h" |
Eric Andersen | b0e9a70 | 1999-10-18 22:28:26 +0000 | [diff] [blame] | 24 | #include <stdio.h> |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 25 | #include <errno.h> |
| 26 | #include <sys/types.h> |
| 27 | #include <sys/stat.h> |
| 28 | #include <fcntl.h> |
| 29 | #include <unistd.h> |
| 30 | |
Erik Andersen | 5e1189e | 2000-04-15 16:34:54 +0000 | [diff] [blame] | 31 | static const char mknod_usage[] = "mknod [OPTIONS] NAME TYPE MAJOR MINOR\n\n" |
| 32 | "Create a special file (block, character, or pipe).\n\n" |
| 33 | "Options:\n" |
| 34 | "\t-m\tcreate the special file using the specified mode (default a=rw)\n\n" |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 35 | "TYPEs include:\n" |
| 36 | "\tb:\tMake a block (buffered) device.\n" |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 37 | "\tc or u:\tMake a character (un-buffered) device.\n" |
Erik Andersen | 5e1189e | 2000-04-15 16:34:54 +0000 | [diff] [blame] | 38 | "\tp:\tMake a named pipe. MAJOR and MINOR are ignored for named pipes.\n"; |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 39 | |
| 40 | int mknod_main(int argc, char **argv) |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 41 | { |
Erik Andersen | 5e1189e | 2000-04-15 16:34:54 +0000 | [diff] [blame] | 42 | char *thisarg; |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 43 | mode_t mode = 0; |
Erik Andersen | 5e1189e | 2000-04-15 16:34:54 +0000 | [diff] [blame] | 44 | mode_t perm = 0666; |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 45 | dev_t dev = 0; |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 46 | |
Erik Andersen | 5e1189e | 2000-04-15 16:34:54 +0000 | [diff] [blame] | 47 | argc--; |
| 48 | argv++; |
| 49 | |
| 50 | /* Parse any options */ |
| 51 | while (argc > 1) { |
| 52 | if (**argv != '-') |
| 53 | break; |
| 54 | thisarg = *argv; |
| 55 | thisarg++; |
| 56 | switch (*thisarg) { |
| 57 | case 'm': |
| 58 | argc--; |
| 59 | argv++; |
| 60 | parse_mode(*argv, &perm); |
Erik Andersen | 6ed02a0 | 2000-04-28 22:10:34 +0000 | [diff] [blame^] | 61 | umask(0); |
Erik Andersen | 5e1189e | 2000-04-15 16:34:54 +0000 | [diff] [blame] | 62 | break; |
| 63 | default: |
| 64 | usage(mknod_usage); |
| 65 | } |
| 66 | argc--; |
| 67 | argv++; |
| 68 | } |
| 69 | if (argc != 4 && argc != 2) { |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 70 | usage(mknod_usage); |
Erik Andersen | 812d466 | 2000-01-07 18:30:40 +0000 | [diff] [blame] | 71 | } |
Erik Andersen | 5e1189e | 2000-04-15 16:34:54 +0000 | [diff] [blame] | 72 | switch (argv[1][0]) { |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 73 | case 'c': |
| 74 | case 'u': |
| 75 | mode = S_IFCHR; |
| 76 | break; |
| 77 | case 'b': |
| 78 | mode = S_IFBLK; |
| 79 | break; |
| 80 | case 'p': |
| 81 | mode = S_IFIFO; |
Erik Andersen | 5e1189e | 2000-04-15 16:34:54 +0000 | [diff] [blame] | 82 | if (argc!=2) { |
| 83 | usage(mknod_usage); |
| 84 | } |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 85 | break; |
| 86 | default: |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 87 | usage(mknod_usage); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 88 | } |
| 89 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 90 | if (mode == S_IFCHR || mode == S_IFBLK) { |
Erik Andersen | 6ed02a0 | 2000-04-28 22:10:34 +0000 | [diff] [blame^] | 91 | dev = (atoi(argv[2]) << 8) | atoi(argv[3]); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 92 | } |
| 93 | |
Erik Andersen | 5e1189e | 2000-04-15 16:34:54 +0000 | [diff] [blame] | 94 | mode |= perm; |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 95 | |
Erik Andersen | 5e1189e | 2000-04-15 16:34:54 +0000 | [diff] [blame] | 96 | if (mknod(argv[0], mode, dev) != 0) |
| 97 | fatalError("%s: %s\n", argv[0], strerror(errno)); |
Erik Andersen | 9cf3bfa | 2000-04-13 18:49:43 +0000 | [diff] [blame] | 98 | exit (TRUE); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 99 | } |
Erik Andersen | 5e1189e | 2000-04-15 16:34:54 +0000 | [diff] [blame] | 100 | |