* Mini du implementation for busybox
*
*
- * Copyright (C) 1999 by Lineo, inc.
+ * Copyright (C) 1999,2000 by Lineo, inc.
* Written by John Beppu <beppu@lineo.com>
*
* This program is free software; you can redistribute it and/or modify
#include <dirent.h>
#include <stdio.h>
#include <errno.h>
-#include <sys/param.h> /* for PATH_MAX */
typedef void (Display) (long, char *);
-static const char du_usage[] =
-
- "du [OPTION]... [FILE]...\n\n"
- "\t-s\tdisplay only a total for each argument\n";
-
static int du_depth = 0;
+static int count_hardlinks = 0;
static Display *print;
static void print_normal(long size, char *filename)
{
- fprintf(stdout, "%-7ld %s\n", size, filename);
+ fprintf(stdout, "%ld\t%s\n", size, filename);
}
static void print_summary(long size, char *filename)
}
}
-
/* tiny recursive du */
static long du(char *filename)
{
struct stat statbuf;
long sum;
+ int len;
if ((lstat(filename, &statbuf)) != 0) {
- fprintf(stdout, "du: %s: %s\n", filename, strerror(errno));
+ printf("du: %s: %s\n", filename, strerror(errno));
return 0;
}
du_depth++;
sum = (statbuf.st_blocks >> 1);
- /* Don't add in stuff pointed to by links */
+ /* Don't add in stuff pointed to by symbolic links */
if (S_ISLNK(statbuf.st_mode)) {
- return 0;
+ sum = 0L;
+ if (du_depth == 1)
+ print(sum, filename);
}
if (S_ISDIR(statbuf.st_mode)) {
DIR *dir;
dir = opendir(filename);
if (!dir) {
+ du_depth--;
return 0;
}
+
+ len = strlen(filename);
+ if (filename[len - 1] == '/')
+ filename[--len] = '\0';
+
while ((entry = readdir(dir))) {
- char newfile[PATH_MAX + 1];
+ char newfile[BUFSIZ + 1];
char *name = entry->d_name;
if ((strcmp(name, "..") == 0)
continue;
}
- if (strlen(filename) + strlen(name) + 1 > PATH_MAX) {
- fprintf(stderr, name_too_long, "du");
+ if (len + strlen(name) + 1 > BUFSIZ) {
+ errorMsg(name_too_long);
+ du_depth--;
return 0;
}
sprintf(newfile, "%s/%s", filename, name);
closedir(dir);
print(sum, filename);
}
+ else if (statbuf.st_nlink > 1 && !count_hardlinks) {
+ /* Add files with hard links only once */
+ if (is_in_ino_dev_hashtable(&statbuf, NULL)) {
+ sum = 0L;
+ if (du_depth == 1)
+ print(sum, filename);
+ }
+ else {
+ add_to_ino_dev_hashtable(&statbuf, NULL);
+ }
+ }
du_depth--;
return sum;
}
int du_main(int argc, char **argv)
{
int i;
- char opt;
+ int c;
/* default behaviour */
print = print_normal;
/* parse argv[] */
- for (i = 1; i < argc; i++) {
- if (argv[i][0] == '-') {
- opt = argv[i][1];
- switch (opt) {
+ while ((c = getopt(argc, argv, "sl")) != EOF) {
+ switch (c) {
case 's':
- print = print_summary;
- break;
- case 'h':
- usage(du_usage);
- break;
+ print = print_summary;
+ break;
+ case 'l':
+ count_hardlinks = 1;
+ break;
default:
- fprintf(stderr, "du: invalid option -- %c\n", opt);
- usage(du_usage);
+ usage(du_usage);
}
- } else {
- break;
- }
}
/* go through remaining args (if any) */
- if (i >= argc) {
+ if (optind >= argc) {
du(".");
} else {
long sum;
- for (; i < argc; i++) {
+ for (i=optind; i < argc; i++) {
sum = du(argv[i]);
- if ((sum) && (isDirectory(argv[i], FALSE, NULL))) {
+ if (sum && isDirectory(argv[i], FALSE, NULL)) {
print_normal(sum, argv[i]);
}
+ reset_ino_dev_hashtable();
}
}
- exit(0);
+ return(0);
}
-/* $Id: du.c,v 1.13 2000/02/13 04:10:57 beppu Exp $ */
+/* $Id: du.c,v 1.24 2000/07/17 16:17:19 proski Exp $ */
+/*
+Local Variables:
+c-file-style: "linux"
+c-basic-offset: 4
+tab-width: 4
+End:
+*/