1 /* vi: set sw=4 ts=4: */
3 * Mini du implementation for busybox
6 * Copyright (C) 1999,2000 by Lineo, inc.
7 * Written by John Beppu <beppu@lineo.com>
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.
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.
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
26 #define BB_DECLARE_EXTERN
27 #define bb_need_name_too_long
30 #include <sys/types.h>
36 #ifdef BB_FEATURE_HUMAN_READABLE
37 unsigned long du_disp_hr = KILOBYTE;
40 typedef void (Display) (long, char *);
42 static int du_depth = 0;
43 static int count_hardlinks = 0;
45 static Display *print;
47 static void print_normal(long size, char *filename)
49 #ifdef BB_FEATURE_HUMAN_READABLE
50 printf("%s\t%s\n", format((size * KILOBYTE), du_disp_hr), filename);
52 printf("%ld\t%s\n", size, filename);
56 static void print_summary(long size, char *filename)
60 print_normal(size, filename);
64 /* tiny recursive du */
65 static long du(char *filename)
71 if ((lstat(filename, &statbuf)) != 0) {
72 perror_msg_and_die("%s", filename);
76 sum = (statbuf.st_blocks >> 1);
78 /* Don't add in stuff pointed to by symbolic links */
79 if (S_ISLNK(statbuf.st_mode)) {
84 if (S_ISDIR(statbuf.st_mode)) {
88 dir = opendir(filename);
94 len = strlen(filename);
95 if (filename[len - 1] == '/')
96 filename[--len] = '\0';
98 while ((entry = readdir(dir))) {
99 char newfile[BUFSIZ + 1];
100 char *name = entry->d_name;
102 if ((strcmp(name, "..") == 0)
103 || (strcmp(name, ".") == 0)) {
107 if (len + strlen(name) + 1 > BUFSIZ) {
108 error_msg(name_too_long);
112 sprintf(newfile, "%s/%s", filename, name);
117 print(sum, filename);
119 else if (statbuf.st_nlink > 1 && !count_hardlinks) {
120 /* Add files with hard links only once */
121 if (is_in_ino_dev_hashtable(&statbuf, NULL)) {
124 print(sum, filename);
127 add_to_ino_dev_hashtable(&statbuf, NULL);
134 int du_main(int argc, char **argv)
136 int status = EXIT_SUCCESS;
140 /* default behaviour */
141 print = print_normal;
144 while ((c = getopt(argc, argv, "sl"
145 #ifdef BB_FEATURE_HUMAN_READABLE
151 print = print_summary;
156 #ifdef BB_FEATURE_HUMAN_READABLE
157 case 'h': du_disp_hr = 0; break;
158 case 'm': du_disp_hr = MEGABYTE; break;
159 case 'k': du_disp_hr = KILOBYTE; break;
168 /* go through remaining args (if any) */
169 if (optind >= argc) {
171 status = EXIT_FAILURE;
175 for (i=optind; i < argc; i++) {
176 if ((sum = du(argv[i])) == 0)
177 status = EXIT_FAILURE;
178 if(is_directory(argv[i], FALSE, NULL)==FALSE) {
179 print_normal(sum, argv[i]);
181 reset_ino_dev_hashtable();
188 /* $Id: du.c,v 1.34 2001/01/22 22:35:38 rjune Exp $ */
191 c-file-style: "linux"