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 | * |
| 6 | * Copyright (C) 1999 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> |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 35 | #include <sys/param.h> /* for PATH_MAX */ |
John Beppu | 0f5e1ab | 1999-12-09 18:23:54 +0000 | [diff] [blame] | 36 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 37 | typedef void (Display) (long, char *); |
John Beppu | 0f5e1ab | 1999-12-09 18:23:54 +0000 | [diff] [blame] | 38 | |
John Beppu | e1618e4 | 1999-12-15 18:52:17 +0000 | [diff] [blame] | 39 | static const char du_usage[] = |
John Beppu | e1618e4 | 1999-12-15 18:52:17 +0000 | [diff] [blame] | 40 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 41 | "du [OPTION]... [FILE]...\n\n" |
| 42 | "\t-s\tdisplay only a total for each argument\n"; |
John Beppu | e1618e4 | 1999-12-15 18:52:17 +0000 | [diff] [blame] | 43 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 44 | static int du_depth = 0; |
John Beppu | e1618e4 | 1999-12-15 18:52:17 +0000 | [diff] [blame] | 45 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 46 | static Display *print; |
| 47 | |
| 48 | static void print_normal(long size, char *filename) |
John Beppu | 0f5e1ab | 1999-12-09 18:23:54 +0000 | [diff] [blame] | 49 | { |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 50 | fprintf(stdout, "%-7ld %s\n", size, filename); |
John Beppu | 0f5e1ab | 1999-12-09 18:23:54 +0000 | [diff] [blame] | 51 | } |
| 52 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 53 | static void print_summary(long size, char *filename) |
John Beppu | e1618e4 | 1999-12-15 18:52:17 +0000 | [diff] [blame] | 54 | { |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 55 | if (du_depth == 1) { |
| 56 | print_normal(size, filename); |
| 57 | } |
John Beppu | e1618e4 | 1999-12-15 18:52:17 +0000 | [diff] [blame] | 58 | } |
| 59 | |
| 60 | |
John Beppu | 0f5e1ab | 1999-12-09 18:23:54 +0000 | [diff] [blame] | 61 | /* tiny recursive du */ |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 62 | static long du(char *filename) |
John Beppu | 0f5e1ab | 1999-12-09 18:23:54 +0000 | [diff] [blame] | 63 | { |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 64 | struct stat statbuf; |
Erik Andersen | fac10d7 | 2000-02-07 05:29:42 +0000 | [diff] [blame] | 65 | long sum; |
John Beppu | 14c82b6 | 1999-12-10 06:15:27 +0000 | [diff] [blame] | 66 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 67 | if ((lstat(filename, &statbuf)) != 0) { |
| 68 | fprintf(stdout, "du: %s: %s\n", filename, strerror(errno)); |
| 69 | return 0; |
| 70 | } |
| 71 | |
| 72 | du_depth++; |
| 73 | sum = statbuf.st_blocks; |
| 74 | |
| 75 | if (S_ISDIR(statbuf.st_mode)) { |
| 76 | DIR *dir; |
| 77 | struct dirent *entry; |
| 78 | |
| 79 | dir = opendir(filename); |
| 80 | if (!dir) { |
| 81 | return 0; |
| 82 | } |
| 83 | while ((entry = readdir(dir))) { |
| 84 | char newfile[PATH_MAX + 1]; |
| 85 | char *name = entry->d_name; |
| 86 | |
| 87 | if ((strcmp(name, "..") == 0) |
| 88 | || (strcmp(name, ".") == 0)) { |
| 89 | continue; |
| 90 | } |
| 91 | |
| 92 | if (strlen(filename) + strlen(name) + 1 > PATH_MAX) { |
| 93 | fprintf(stderr, name_too_long, "du"); |
| 94 | return 0; |
| 95 | } |
| 96 | sprintf(newfile, "%s/%s", filename, name); |
| 97 | |
| 98 | sum += du(newfile); |
| 99 | } |
| 100 | closedir(dir); |
| 101 | print(sum, filename); |
| 102 | } |
| 103 | du_depth--; |
| 104 | return sum; |
John Beppu | 0f5e1ab | 1999-12-09 18:23:54 +0000 | [diff] [blame] | 105 | } |
| 106 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 107 | int du_main(int argc, char **argv) |
| 108 | { |
| 109 | int i; |
| 110 | char opt; |
| 111 | |
| 112 | /* default behaviour */ |
| 113 | print = print_normal; |
| 114 | |
| 115 | /* parse argv[] */ |
| 116 | for (i = 1; i < argc; i++) { |
| 117 | if (argv[i][0] == '-') { |
| 118 | opt = argv[i][1]; |
| 119 | switch (opt) { |
| 120 | case 's': |
| 121 | print = print_summary; |
| 122 | break; |
| 123 | case 'h': |
| 124 | usage(du_usage); |
| 125 | break; |
| 126 | default: |
| 127 | fprintf(stderr, "du: invalid option -- %c\n", opt); |
| 128 | usage(du_usage); |
| 129 | } |
| 130 | } else { |
| 131 | break; |
| 132 | } |
| 133 | } |
| 134 | |
| 135 | /* go through remaining args (if any) */ |
| 136 | if (i >= argc) { |
| 137 | du("."); |
| 138 | } else { |
| 139 | long sum; |
| 140 | |
| 141 | for (; i < argc; i++) { |
| 142 | sum = du(argv[i]); |
| 143 | if ((sum) && (isDirectory(argv[i], FALSE))) { |
| 144 | print_normal(sum, argv[i]); |
| 145 | } |
| 146 | } |
| 147 | } |
| 148 | |
| 149 | exit(0); |
| 150 | } |
| 151 | |
| 152 | /* $Id: du.c,v 1.11 2000/02/08 19:58:47 erik Exp $ */ |