/*
* Mini du implementation for busybox
*
- *
- * Copyright (C) 1999 by Lineo, inc.
- * Written by John Beppu <beppu@lineo.com>
+ * Copyright (C) 1999,2000,2001 by Lineo, inc. and John Beppu
+ * Copyright (C) 1999,2000,2001 by John Beppu <beppu@codepoet.org>
+ * Copyright (C) 2002 Edward Betts <edward@debian.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
*
*/
-#include "internal.h"
-#define BB_DECLARE_EXTERN
-#define bb_need_name_too_long
-#include "messages.c"
-
#include <sys/types.h>
#include <fcntl.h>
#include <dirent.h>
#include <stdio.h>
+#include <stdlib.h>
+#include <getopt.h>
+#include <string.h>
#include <errno.h>
-#include <sys/param.h> /* for PATH_MAX */
+#include "busybox.h"
-typedef void (Display) (long, char *);
-static const char du_usage[] =
+#ifdef CONFIG_FEATURE_HUMAN_READABLE
+static unsigned long disp_hr = KILOBYTE;
+#endif
- "du [OPTION]... [FILE]...\n\n"
- "\t-s\tdisplay only a total for each argument\n";
+typedef void (Display) (long, char *);
static int du_depth = 0;
+static int count_hardlinks = 0;
+static int one_file_system = 0;
+static dev_t dir_dev = 0;
static Display *print;
static void print_normal(long size, char *filename)
{
- fprintf(stdout, "%-7ld %s\n", size, filename);
+#ifdef CONFIG_FEATURE_HUMAN_READABLE
+ printf("%s\t%s\n", make_human_readable_str(size<<10, 1, disp_hr), filename);
+#else
+ printf("%ld\t%s\n", size, filename);
+#endif
}
static void print_summary(long size, char *filename)
}
}
-
/* tiny recursive du */
static long du(char *filename)
{
long sum;
if ((lstat(filename, &statbuf)) != 0) {
- fprintf(stdout, "du: %s: %s\n", filename, strerror(errno));
+ perror_msg("%s", filename);
return 0;
}
+ if (du_depth == 0)
+ dir_dev = statbuf.st_dev;
+ else if (one_file_system && dir_dev != statbuf.st_dev)
+ return 0;
du_depth++;
- sum = statbuf.st_blocks;
+ sum = (statbuf.st_blocks >> 1);
+ /* Don't add in stuff pointed to by symbolic links */
+ if (S_ISLNK(statbuf.st_mode)) {
+ sum = 0L;
+ if (du_depth == 1) {
+ }
+ }
if (S_ISDIR(statbuf.st_mode)) {
DIR *dir;
struct dirent *entry;
+ char *newfile;
dir = opendir(filename);
if (!dir) {
+ du_depth--;
return 0;
}
+
+ newfile = last_char_is(filename, '/');
+ if (newfile)
+ *newfile = '\0';
+
while ((entry = readdir(dir))) {
- char newfile[PATH_MAX + 1];
char *name = entry->d_name;
if ((strcmp(name, "..") == 0)
|| (strcmp(name, ".") == 0)) {
continue;
}
-
- if (strlen(filename) + strlen(name) + 1 > PATH_MAX) {
- fprintf(stderr, name_too_long, "du");
- return 0;
- }
- sprintf(newfile, "%s/%s", filename, name);
-
+ newfile = concat_path_file(filename, name);
sum += du(newfile);
+ free(newfile);
}
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 status = EXIT_SUCCESS;
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, "slx"
+#ifdef CONFIG_FEATURE_HUMAN_READABLE
+"hm"
+#endif
+"k")) != 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;
+ case 'x':
+ one_file_system = 1;
+ break;
+#ifdef CONFIG_FEATURE_HUMAN_READABLE
+ case 'h': disp_hr = 0; break;
+ case 'm': disp_hr = MEGABYTE; break;
+#endif
+ case 'k': break;
default:
- fprintf(stderr, "du: invalid option -- %c\n", opt);
- usage(du_usage);
+ show_usage();
}
- } else {
- break;
- }
}
/* go through remaining args (if any) */
- if (i >= argc) {
- du(".");
+ if (optind >= argc) {
+ if (du(".") == 0)
+ status = EXIT_FAILURE;
} else {
long sum;
- for (; i < argc; i++) {
+ for (i=optind; i < argc; i++) {
sum = du(argv[i]);
- if ((sum) && (isDirectory(argv[i], FALSE))) {
+ if(is_directory(argv[i], FALSE, NULL)==FALSE) {
print_normal(sum, argv[i]);
}
+ reset_ino_dev_hashtable();
}
}
- exit(0);
+ return status;
}
-/* $Id: du.c,v 1.11 2000/02/08 19:58:47 erik Exp $ */
+/* $Id: du.c,v 1.53 2002/04/06 23:16:44 andersen Exp $ */
+/*
+Local Variables:
+c-file-style: "linux"
+c-basic-offset: 4
+tab-width: 4
+End:
+*/
projects / oweals / busybox.git / blobdiff