Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 1 | /* vi: set sw=4 ts=4: */ |
Eric Andersen | f6be944 | 1999-10-13 21:12:06 +0000 | [diff] [blame] | 2 | /* |
| 3 | * Mini ln implementation for busybox |
| 4 | * |
Erik Andersen | 61677fe | 2000-04-13 01:18:56 +0000 | [diff] [blame] | 5 | * Copyright (C) 1999,2000 by Lineo, inc. |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 6 | * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org> |
Eric Andersen | f6be944 | 1999-10-13 21:12:06 +0000 | [diff] [blame] | 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 16 | * General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 21 | * |
| 22 | */ |
| 23 | |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 24 | #include "internal.h" |
Erik Andersen | fac10d7 | 2000-02-07 05:29:42 +0000 | [diff] [blame] | 25 | #define BB_DECLARE_EXTERN |
Erik Andersen | fac10d7 | 2000-02-07 05:29:42 +0000 | [diff] [blame] | 26 | #define bb_need_not_a_directory |
| 27 | #include "messages.c" |
| 28 | |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 29 | #include <stdio.h> |
Eric Andersen | f6be944 | 1999-10-13 21:12:06 +0000 | [diff] [blame] | 30 | #include <dirent.h> |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 31 | #include <errno.h> |
| 32 | |
Erik Andersen | fac10d7 | 2000-02-07 05:29:42 +0000 | [diff] [blame] | 33 | static const char ln_usage[] = |
Erik Andersen | 7ab9c7e | 2000-05-12 19:41:47 +0000 | [diff] [blame] | 34 | "ln [OPTION] TARGET... LINK_NAME|DIRECTORY\n" |
| 35 | #ifndef BB_FEATURE_TRIVIAL_HELP |
Eric Andersen | addc9c2 | 2000-06-21 22:53:24 +0000 | [diff] [blame] | 36 | "\nCreate a link named LINK_NAME or DIRECTORY to the specified TARGET\n" |
| 37 | "\nYou may use '--' to indicate that all following arguments are non-options.\n\n" |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 38 | "Options:\n" |
| 39 | "\t-s\tmake symbolic links instead of hard links\n" |
| 40 | |
| 41 | "\t-f\tremove existing destination files\n" |
Erik Andersen | 7ab9c7e | 2000-05-12 19:41:47 +0000 | [diff] [blame] | 42 | "\t-n\tno dereference symlinks - treat like normal file\n" |
| 43 | #endif |
| 44 | ; |
Eric Andersen | f6be944 | 1999-10-13 21:12:06 +0000 | [diff] [blame] | 45 | |
| 46 | static int symlinkFlag = FALSE; |
| 47 | static int removeoldFlag = FALSE; |
Erik Andersen | fac10d7 | 2000-02-07 05:29:42 +0000 | [diff] [blame] | 48 | static int followLinks = TRUE; |
Eric Andersen | f6be944 | 1999-10-13 21:12:06 +0000 | [diff] [blame] | 49 | |
| 50 | extern int ln_main(int argc, char **argv) |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 51 | { |
Eric Andersen | 9b2297a | 2000-07-10 20:08:44 +0000 | [diff] [blame] | 52 | char *linkName, *dirName=NULL; |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 53 | int linkIntoDirFlag; |
Pavel Roskin | 2e96523 | 2000-06-15 18:04:40 +0000 | [diff] [blame] | 54 | int stopIt = FALSE; |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 55 | |
Eric Andersen | f6be944 | 1999-10-13 21:12:06 +0000 | [diff] [blame] | 56 | argc--; |
| 57 | argv++; |
Eric Andersen | f6be944 | 1999-10-13 21:12:06 +0000 | [diff] [blame] | 58 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 59 | /* Parse any options */ |
Pavel Roskin | 2e96523 | 2000-06-15 18:04:40 +0000 | [diff] [blame] | 60 | while (argc > 0 && stopIt == FALSE) { |
| 61 | if (**argv == '-') { |
Eric Andersen | 815e904 | 2000-06-06 16:15:23 +0000 | [diff] [blame] | 62 | while (*++(*argv)) |
| 63 | switch (**argv) { |
| 64 | case 's': |
| 65 | symlinkFlag = TRUE; |
| 66 | break; |
| 67 | case 'f': |
| 68 | removeoldFlag = TRUE; |
| 69 | break; |
| 70 | case 'n': |
| 71 | followLinks = FALSE; |
| 72 | break; |
Pavel Roskin | 2e96523 | 2000-06-15 18:04:40 +0000 | [diff] [blame] | 73 | case '-': |
| 74 | stopIt = TRUE; |
| 75 | break; |
Eric Andersen | 815e904 | 2000-06-06 16:15:23 +0000 | [diff] [blame] | 76 | default: |
| 77 | usage(ln_usage); |
| 78 | } |
Pavel Roskin | 2e96523 | 2000-06-15 18:04:40 +0000 | [diff] [blame] | 79 | argc--; |
| 80 | argv++; |
Eric Andersen | 815e904 | 2000-06-06 16:15:23 +0000 | [diff] [blame] | 81 | } |
Pavel Roskin | 2e96523 | 2000-06-15 18:04:40 +0000 | [diff] [blame] | 82 | else |
| 83 | break; |
Erik Andersen | fac10d7 | 2000-02-07 05:29:42 +0000 | [diff] [blame] | 84 | } |
| 85 | |
Pavel Roskin | 2e96523 | 2000-06-15 18:04:40 +0000 | [diff] [blame] | 86 | if (argc < 2) { |
| 87 | usage(ln_usage); |
Eric Andersen | 815e904 | 2000-06-06 16:15:23 +0000 | [diff] [blame] | 88 | } |
| 89 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 90 | linkName = argv[argc - 1]; |
Erik Andersen | fac10d7 | 2000-02-07 05:29:42 +0000 | [diff] [blame] | 91 | |
Eric Andersen | 195fa15 | 2000-07-11 17:35:32 +0000 | [diff] [blame] | 92 | linkIntoDirFlag = isDirectory(linkName, followLinks, NULL); |
Pavel Roskin | 110fc0c | 2000-06-18 00:02:24 +0000 | [diff] [blame] | 93 | if ((argc >= 3) && linkIntoDirFlag == FALSE) { |
Matt Kraai | d537a95 | 2000-07-14 01:51:25 +0000 | [diff] [blame^] | 94 | errorMsg(not_a_directory, linkName); |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 95 | exit FALSE; |
Eric Andersen | f6be944 | 1999-10-13 21:12:06 +0000 | [diff] [blame] | 96 | } |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 97 | |
Eric Andersen | 0b4551f | 2000-07-10 16:44:03 +0000 | [diff] [blame] | 98 | if (linkIntoDirFlag == TRUE) |
| 99 | dirName = linkName; |
| 100 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 101 | while (argc-- >= 2) { |
Eric Andersen | 6f9985e | 2000-06-22 00:02:56 +0000 | [diff] [blame] | 102 | int status; |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 103 | |
Eric Andersen | 0b4551f | 2000-07-10 16:44:03 +0000 | [diff] [blame] | 104 | if (linkIntoDirFlag == TRUE) { |
| 105 | char *baseName = get_last_path_component(*argv); |
| 106 | linkName = (char *)malloc(strlen(dirName)+strlen(baseName)+2); |
| 107 | strcpy(linkName, dirName); |
| 108 | if(dirName[strlen(dirName)-1] != '/') |
| 109 | strcat(linkName, "/"); |
| 110 | strcat(linkName,baseName); |
| 111 | } |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 112 | |
| 113 | if (removeoldFlag == TRUE) { |
| 114 | status = (unlink(linkName) && errno != ENOENT); |
| 115 | if (status != 0) { |
| 116 | perror(linkName); |
| 117 | exit FALSE; |
| 118 | } |
| 119 | } |
| 120 | |
| 121 | if (symlinkFlag == TRUE) |
| 122 | status = symlink(*argv, linkName); |
| 123 | else |
| 124 | status = link(*argv, linkName); |
| 125 | if (status != 0) { |
| 126 | perror(linkName); |
| 127 | exit FALSE; |
| 128 | } |
Eric Andersen | 0b4551f | 2000-07-10 16:44:03 +0000 | [diff] [blame] | 129 | |
Eric Andersen | 195fa15 | 2000-07-11 17:35:32 +0000 | [diff] [blame] | 130 | if (linkIntoDirFlag == TRUE) |
Eric Andersen | 0b4551f | 2000-07-10 16:44:03 +0000 | [diff] [blame] | 131 | free(linkName); |
| 132 | |
| 133 | argv++; |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 134 | } |
Eric Andersen | b610615 | 2000-06-19 17:25:40 +0000 | [diff] [blame] | 135 | return( TRUE); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 136 | } |
Erik Andersen | 029011b | 2000-03-04 21:19:32 +0000 | [diff] [blame] | 137 | |
| 138 | /* |
| 139 | Local Variables: |
| 140 | c-file-style: "linux" |
| 141 | c-basic-offset: 4 |
| 142 | tab-width: 4 |
| 143 | End: |
| 144 | */ |