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 typedef void (Display) (long, char *);
38 static int du_depth = 0;
39 static int count_hardlinks = 0;
41 static Display *print;
43 static void print_normal(long size, char *filename)
45 fprintf(stdout, "%ld\t%s\n", size, filename);
48 static void print_summary(long size, char *filename)
51 print_normal(size, filename);
55 /* tiny recursive du */
56 static long du(char *filename)
62 if ((lstat(filename, &statbuf)) != 0) {
63 perror_msg_and_die("%s", filename);
67 sum = (statbuf.st_blocks >> 1);
69 /* Don't add in stuff pointed to by symbolic links */
70 if (S_ISLNK(statbuf.st_mode)) {
75 if (S_ISDIR(statbuf.st_mode)) {
79 dir = opendir(filename);
85 len = strlen(filename);
86 if (filename[len - 1] == '/')
87 filename[--len] = '\0';
89 while ((entry = readdir(dir))) {
90 char newfile[BUFSIZ + 1];
91 char *name = entry->d_name;
93 if ((strcmp(name, "..") == 0)
94 || (strcmp(name, ".") == 0)) {
98 if (len + strlen(name) + 1 > BUFSIZ) {
99 error_msg(name_too_long);
103 sprintf(newfile, "%s/%s", filename, name);
108 print(sum, filename);
110 else if (statbuf.st_nlink > 1 && !count_hardlinks) {
111 /* Add files with hard links only once */
112 if (is_in_ino_dev_hashtable(&statbuf, NULL)) {
115 print(sum, filename);
118 add_to_ino_dev_hashtable(&statbuf, NULL);
125 int du_main(int argc, char **argv)
127 int status = EXIT_SUCCESS;
131 /* default behaviour */
132 print = print_normal;
135 while ((c = getopt(argc, argv, "sl")) != EOF) {
138 print = print_summary;
148 /* go through remaining args (if any) */
149 if (optind >= argc) {
151 status = EXIT_FAILURE;
155 for (i=optind; i < argc; i++) {
156 if ((sum = du(argv[i])) == 0)
157 status = EXIT_FAILURE;
158 if (is_directory(argv[i], FALSE, NULL)==FALSE) {
159 print_normal(sum, argv[i]);
161 reset_ino_dev_hashtable();
168 /* $Id: du.c,v 1.32 2000/12/12 23:17:26 andersen Exp $ */
171 c-file-style: "linux"