1 /* vi: set sw=4 ts=4: */
3 * Mini du implementation for busybox
6 * Copyright (C) 1999,2000,2001 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
25 #include <sys/types.h>
33 #define BB_DECLARE_EXTERN
34 #define bb_need_name_too_long
38 #ifdef BB_FEATURE_HUMAN_READABLE
39 static unsigned long disp_hr = KILOBYTE;
42 typedef void (Display) (long, char *);
44 static int du_depth = 0;
45 static int count_hardlinks = 0;
47 static Display *print;
49 static void print_normal(long size, char *filename)
52 #ifdef BB_FEATURE_HUMAN_READABLE
63 printf("%s\t%s\n", make_human_readable_str(size, base), filename);
65 printf("%ld\t%s\n", size, filename);
69 static void print_summary(long size, char *filename)
73 print_normal(size, filename);
77 /* tiny recursive du */
78 static long du(char *filename)
84 if ((lstat(filename, &statbuf)) != 0) {
85 perror_msg_and_die("%s", filename);
89 sum = (statbuf.st_blocks >> 1);
91 /* Don't add in stuff pointed to by symbolic links */
92 if (S_ISLNK(statbuf.st_mode)) {
97 if (S_ISDIR(statbuf.st_mode)) {
101 dir = opendir(filename);
107 len = strlen(filename);
108 if (filename[len - 1] == '/')
109 filename[--len] = '\0';
111 while ((entry = readdir(dir))) {
112 char newfile[BUFSIZ + 1];
113 char *name = entry->d_name;
115 if ((strcmp(name, "..") == 0)
116 || (strcmp(name, ".") == 0)) {
120 if (len + strlen(name) + 1 > BUFSIZ) {
121 error_msg(name_too_long);
125 sprintf(newfile, "%s/%s", filename, name);
130 print(sum, filename);
132 else if (statbuf.st_nlink > 1 && !count_hardlinks) {
133 /* Add files with hard links only once */
134 if (is_in_ino_dev_hashtable(&statbuf, NULL)) {
137 print(sum, filename);
140 add_to_ino_dev_hashtable(&statbuf, NULL);
147 int du_main(int argc, char **argv)
149 int status = EXIT_SUCCESS;
153 /* default behaviour */
154 print = print_normal;
157 while ((c = getopt(argc, argv, "sl"
158 #ifdef BB_FEATURE_HUMAN_READABLE
164 print = print_summary;
169 #ifdef BB_FEATURE_HUMAN_READABLE
170 case 'h': disp_hr = 0; break;
171 case 'm': disp_hr = MEGABYTE; break;
179 /* go through remaining args (if any) */
180 if (optind >= argc) {
182 status = EXIT_FAILURE;
186 for (i=optind; i < argc; i++) {
187 if ((sum = du(argv[i])) == 0)
188 status = EXIT_FAILURE;
189 if(is_directory(argv[i], FALSE, NULL)==FALSE) {
190 print_normal(sum, argv[i]);
192 reset_ino_dev_hashtable();
199 /* $Id: du.c,v 1.42 2001/03/07 17:42:07 markw Exp $ */
202 c-file-style: "linux"