Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 1 | /* vi: set sw=4 ts=4: */ |
John Beppu | 0f5e1ab | 1999-12-09 18:23:54 +0000 | [diff] [blame] | 2 | /* |
| 3 | * Mini du implementation for busybox |
| 4 | * |
| 5 | * |
Erik Andersen | 61677fe | 2000-04-13 01:18:56 +0000 | [diff] [blame] | 6 | * Copyright (C) 1999,2000 by Lineo, inc. |
Eric Andersen | 70e2f0b | 1999-12-10 06:45:42 +0000 | [diff] [blame] | 7 | * Written by John Beppu <beppu@lineo.com> |
John Beppu | 0f5e1ab | 1999-12-09 18:23:54 +0000 | [diff] [blame] | 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License as published by |
| 11 | * the Free Software Foundation; either version 2 of the License, or |
| 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 17 | * General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with this program; if not, write to the Free Software |
| 21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 22 | * |
| 23 | */ |
| 24 | |
| 25 | #include "internal.h" |
Erik Andersen | fac10d7 | 2000-02-07 05:29:42 +0000 | [diff] [blame] | 26 | #define BB_DECLARE_EXTERN |
| 27 | #define bb_need_name_too_long |
| 28 | #include "messages.c" |
| 29 | |
John Beppu | 0f5e1ab | 1999-12-09 18:23:54 +0000 | [diff] [blame] | 30 | #include <sys/types.h> |
| 31 | #include <fcntl.h> |
| 32 | #include <dirent.h> |
| 33 | #include <stdio.h> |
John Beppu | 9835541 | 1999-12-10 07:40:08 +0000 | [diff] [blame] | 34 | #include <errno.h> |
John Beppu | 0f5e1ab | 1999-12-09 18:23:54 +0000 | [diff] [blame] | 35 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 36 | typedef void (Display) (long, char *); |
John Beppu | 0f5e1ab | 1999-12-09 18:23:54 +0000 | [diff] [blame] | 37 | |
Erik Andersen | 27fdd08 | 2000-02-19 18:16:49 +0000 | [diff] [blame] | 38 | static const char du_usage[] = |
Erik Andersen | 59b9e87 | 2000-05-10 05:05:45 +0000 | [diff] [blame] | 39 | "du [OPTION]... [FILE]...\n" |
| 40 | #ifndef BB_FEATURE_TRIVIAL_HELP |
| 41 | "\nSummarizes disk space used for each FILE and/or directory.\n" |
Erik Andersen | 27fdd08 | 2000-02-19 18:16:49 +0000 | [diff] [blame] | 42 | "Disk space is printed in units of 1024 bytes.\n\n" |
| 43 | "Options:\n" |
| 44 | "\t-l\tcount sizes many times if hard linked\n" |
Erik Andersen | 59b9e87 | 2000-05-10 05:05:45 +0000 | [diff] [blame] | 45 | "\t-s\tdisplay only a total for each argument\n" |
| 46 | #endif |
| 47 | ; |
John Beppu | e1618e4 | 1999-12-15 18:52:17 +0000 | [diff] [blame] | 48 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 49 | static int du_depth = 0; |
Erik Andersen | 27fdd08 | 2000-02-19 18:16:49 +0000 | [diff] [blame] | 50 | static int count_hardlinks = 0; |
John Beppu | e1618e4 | 1999-12-15 18:52:17 +0000 | [diff] [blame] | 51 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 52 | static Display *print; |
| 53 | |
| 54 | static void print_normal(long size, char *filename) |
John Beppu | 0f5e1ab | 1999-12-09 18:23:54 +0000 | [diff] [blame] | 55 | { |
Erik Andersen | 27fdd08 | 2000-02-19 18:16:49 +0000 | [diff] [blame] | 56 | fprintf(stdout, "%ld\t%s\n", size, filename); |
John Beppu | 0f5e1ab | 1999-12-09 18:23:54 +0000 | [diff] [blame] | 57 | } |
| 58 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 59 | static void print_summary(long size, char *filename) |
John Beppu | e1618e4 | 1999-12-15 18:52:17 +0000 | [diff] [blame] | 60 | { |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 61 | if (du_depth == 1) { |
| 62 | print_normal(size, filename); |
| 63 | } |
John Beppu | e1618e4 | 1999-12-15 18:52:17 +0000 | [diff] [blame] | 64 | } |
| 65 | |
John Beppu | 0f5e1ab | 1999-12-09 18:23:54 +0000 | [diff] [blame] | 66 | /* tiny recursive du */ |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 67 | static long du(char *filename) |
John Beppu | 0f5e1ab | 1999-12-09 18:23:54 +0000 | [diff] [blame] | 68 | { |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 69 | struct stat statbuf; |
Erik Andersen | fac10d7 | 2000-02-07 05:29:42 +0000 | [diff] [blame] | 70 | long sum; |
Erik Andersen | 42387e4 | 2000-02-21 17:27:17 +0000 | [diff] [blame] | 71 | int len; |
John Beppu | 14c82b6 | 1999-12-10 06:15:27 +0000 | [diff] [blame] | 72 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 73 | if ((lstat(filename, &statbuf)) != 0) { |
Erik Andersen | 42387e4 | 2000-02-21 17:27:17 +0000 | [diff] [blame] | 74 | printf("du: %s: %s\n", filename, strerror(errno)); |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 75 | return 0; |
| 76 | } |
| 77 | |
| 78 | du_depth++; |
John Beppu | 08c965a | 2000-02-13 04:10:57 +0000 | [diff] [blame] | 79 | sum = (statbuf.st_blocks >> 1); |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 80 | |
Erik Andersen | 27fdd08 | 2000-02-19 18:16:49 +0000 | [diff] [blame] | 81 | /* Don't add in stuff pointed to by symbolic links */ |
Erik Andersen | 9ffdaa6 | 2000-02-11 21:55:04 +0000 | [diff] [blame] | 82 | if (S_ISLNK(statbuf.st_mode)) { |
Erik Andersen | 42387e4 | 2000-02-21 17:27:17 +0000 | [diff] [blame] | 83 | sum = 0L; |
| 84 | if (du_depth == 1) |
| 85 | print(sum, filename); |
Erik Andersen | 9ffdaa6 | 2000-02-11 21:55:04 +0000 | [diff] [blame] | 86 | } |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 87 | if (S_ISDIR(statbuf.st_mode)) { |
| 88 | DIR *dir; |
| 89 | struct dirent *entry; |
| 90 | |
| 91 | dir = opendir(filename); |
| 92 | if (!dir) { |
Erik Andersen | 42387e4 | 2000-02-21 17:27:17 +0000 | [diff] [blame] | 93 | du_depth--; |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 94 | return 0; |
| 95 | } |
Erik Andersen | 42387e4 | 2000-02-21 17:27:17 +0000 | [diff] [blame] | 96 | |
| 97 | len = strlen(filename); |
| 98 | if (filename[len - 1] == '/') |
| 99 | filename[--len] = '\0'; |
| 100 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 101 | while ((entry = readdir(dir))) { |
Erik Andersen | 4f3f757 | 2000-04-28 00:18:56 +0000 | [diff] [blame] | 102 | char newfile[BUFSIZ + 1]; |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 103 | char *name = entry->d_name; |
| 104 | |
| 105 | if ((strcmp(name, "..") == 0) |
| 106 | || (strcmp(name, ".") == 0)) { |
| 107 | continue; |
| 108 | } |
| 109 | |
Erik Andersen | 4f3f757 | 2000-04-28 00:18:56 +0000 | [diff] [blame] | 110 | if (len + strlen(name) + 1 > BUFSIZ) { |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 111 | fprintf(stderr, name_too_long, "du"); |
Erik Andersen | 42387e4 | 2000-02-21 17:27:17 +0000 | [diff] [blame] | 112 | du_depth--; |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 113 | return 0; |
| 114 | } |
| 115 | sprintf(newfile, "%s/%s", filename, name); |
| 116 | |
| 117 | sum += du(newfile); |
| 118 | } |
| 119 | closedir(dir); |
| 120 | print(sum, filename); |
| 121 | } |
Erik Andersen | 27fdd08 | 2000-02-19 18:16:49 +0000 | [diff] [blame] | 122 | else if (statbuf.st_nlink > 1 && !count_hardlinks) { |
| 123 | /* Add files with hard links only once */ |
Erik Andersen | 029011b | 2000-03-04 21:19:32 +0000 | [diff] [blame] | 124 | if (is_in_ino_dev_hashtable(&statbuf, NULL)) { |
Erik Andersen | 42387e4 | 2000-02-21 17:27:17 +0000 | [diff] [blame] | 125 | sum = 0L; |
| 126 | if (du_depth == 1) |
| 127 | print(sum, filename); |
| 128 | } |
| 129 | else { |
Erik Andersen | 029011b | 2000-03-04 21:19:32 +0000 | [diff] [blame] | 130 | add_to_ino_dev_hashtable(&statbuf, NULL); |
Erik Andersen | 42387e4 | 2000-02-21 17:27:17 +0000 | [diff] [blame] | 131 | } |
Erik Andersen | 27fdd08 | 2000-02-19 18:16:49 +0000 | [diff] [blame] | 132 | } |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 133 | du_depth--; |
| 134 | return sum; |
John Beppu | 0f5e1ab | 1999-12-09 18:23:54 +0000 | [diff] [blame] | 135 | } |
| 136 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 137 | int du_main(int argc, char **argv) |
| 138 | { |
| 139 | int i; |
| 140 | char opt; |
| 141 | |
| 142 | /* default behaviour */ |
| 143 | print = print_normal; |
| 144 | |
| 145 | /* parse argv[] */ |
| 146 | for (i = 1; i < argc; i++) { |
| 147 | if (argv[i][0] == '-') { |
| 148 | opt = argv[i][1]; |
| 149 | switch (opt) { |
| 150 | case 's': |
| 151 | print = print_summary; |
| 152 | break; |
Erik Andersen | 27fdd08 | 2000-02-19 18:16:49 +0000 | [diff] [blame] | 153 | case 'l': |
| 154 | count_hardlinks = 1; |
| 155 | break; |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 156 | case 'h': |
Erik Andersen | 27fdd08 | 2000-02-19 18:16:49 +0000 | [diff] [blame] | 157 | case '-': |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 158 | usage(du_usage); |
| 159 | break; |
| 160 | default: |
| 161 | fprintf(stderr, "du: invalid option -- %c\n", opt); |
| 162 | usage(du_usage); |
| 163 | } |
| 164 | } else { |
| 165 | break; |
| 166 | } |
| 167 | } |
| 168 | |
| 169 | /* go through remaining args (if any) */ |
| 170 | if (i >= argc) { |
| 171 | du("."); |
| 172 | } else { |
| 173 | long sum; |
| 174 | |
| 175 | for (; i < argc; i++) { |
| 176 | sum = du(argv[i]); |
Erik Andersen | 42387e4 | 2000-02-21 17:27:17 +0000 | [diff] [blame] | 177 | if (sum && isDirectory(argv[i], FALSE, NULL)) { |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 178 | print_normal(sum, argv[i]); |
| 179 | } |
Erik Andersen | 029011b | 2000-03-04 21:19:32 +0000 | [diff] [blame] | 180 | reset_ino_dev_hashtable(); |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 181 | } |
| 182 | } |
| 183 | |
Eric Andersen | b610615 | 2000-06-19 17:25:40 +0000 | [diff] [blame] | 184 | return(0); |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 185 | } |
| 186 | |
Eric Andersen | b610615 | 2000-06-19 17:25:40 +0000 | [diff] [blame] | 187 | /* $Id: du.c,v 1.20 2000/06/19 17:25:39 andersen Exp $ */ |
Erik Andersen | 029011b | 2000-03-04 21:19:32 +0000 | [diff] [blame] | 188 | /* |
| 189 | Local Variables: |
| 190 | c-file-style: "linux" |
| 191 | c-basic-offset: 4 |
| 192 | tab-width: 4 |
| 193 | End: |
| 194 | */ |