1 /* vi: set sw=4 ts=4: */
3 * Mini du implementation for busybox
6 * Copyright (C) 1999 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>
35 #include <sys/param.h> /* for PATH_MAX */
37 typedef void (Display) (long, char *);
39 static const char du_usage[] =
41 "du [OPTION]... [FILE]...\n\n"
42 "\t-s\tdisplay only a total for each argument\n";
44 static int du_depth = 0;
46 static Display *print;
48 static void print_normal(long size, char *filename)
50 fprintf(stdout, "%-7ld %s\n", size, filename);
53 static void print_summary(long size, char *filename)
56 print_normal(size, filename);
61 /* tiny recursive du */
62 static long du(char *filename)
67 if ((lstat(filename, &statbuf)) != 0) {
68 fprintf(stdout, "du: %s: %s\n", filename, strerror(errno));
73 sum = (statbuf.st_blocks >> 1);
75 /* Don't add in stuff pointed to by links */
76 if (S_ISLNK(statbuf.st_mode)) {
79 if (S_ISDIR(statbuf.st_mode)) {
83 dir = opendir(filename);
87 while ((entry = readdir(dir))) {
88 char newfile[PATH_MAX + 1];
89 char *name = entry->d_name;
91 if ((strcmp(name, "..") == 0)
92 || (strcmp(name, ".") == 0)) {
96 if (strlen(filename) + strlen(name) + 1 > PATH_MAX) {
97 fprintf(stderr, name_too_long, "du");
100 sprintf(newfile, "%s/%s", filename, name);
105 print(sum, filename);
111 int du_main(int argc, char **argv)
116 /* default behaviour */
117 print = print_normal;
120 for (i = 1; i < argc; i++) {
121 if (argv[i][0] == '-') {
125 print = print_summary;
131 fprintf(stderr, "du: invalid option -- %c\n", opt);
139 /* go through remaining args (if any) */
145 for (; i < argc; i++) {
147 if ((sum) && (isDirectory(argv[i], FALSE, NULL))) {
148 print_normal(sum, argv[i]);
156 /* $Id: du.c,v 1.13 2000/02/13 04:10:57 beppu Exp $ */