/*
* Mini du implementation for busybox
*
- *
- * Copyright (C) 1999,2000,2001 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 "busybox.h"
-#ifdef BB_FEATURE_HUMAN_READABLE
+#ifdef CONFIG_FEATURE_HUMAN_READABLE
static unsigned long disp_hr = KILOBYTE;
#endif
-typedef void (Display) (long, char *);
-
-static int du_depth = 0;
-static int count_hardlinks = 0;
+static int du_depth /*= 0*/;
+static int count_hardlinks /*= 0*/;
+static int one_file_system /*= 0*/;
+static dev_t dir_dev;
-static Display *print;
+static void (*print) (long, char *);
static void print_normal(long size, char *filename)
{
-#ifdef BB_FEATURE_HUMAN_READABLE
- printf("%s\t%s\n", make_human_readable_str(size<<10, 1, disp_hr), 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
}
}
-#define HASH_SIZE 311 /* Should be prime */
-#define hash_inode(i) ((i) % HASH_SIZE)
-
-typedef struct ino_dev_hash_bucket_struct {
- struct ino_dev_hash_bucket_struct *next;
- ino_t ino;
- dev_t dev;
- char name[1];
-} ino_dev_hashtable_bucket_t;
-
-static ino_dev_hashtable_bucket_t *ino_dev_hashtable[HASH_SIZE];
-
-/*
- * Return 1 if statbuf->st_ino && statbuf->st_dev are recorded in
- * `ino_dev_hashtable', else return 0
- *
- * If NAME is a non-NULL pointer to a character pointer, and there is
- * a match, then set *NAME to the value of the name slot in that
- * bucket.
- */
-static int is_in_ino_dev_hashtable(const struct stat *statbuf, char **name)
-{
- ino_dev_hashtable_bucket_t *bucket;
-
- bucket = ino_dev_hashtable[hash_inode(statbuf->st_ino)];
- while (bucket != NULL) {
- if ((bucket->ino == statbuf->st_ino) &&
- (bucket->dev == statbuf->st_dev))
- {
- if (name) *name = bucket->name;
- return 1;
- }
- bucket = bucket->next;
- }
- return 0;
-}
-
-/* Add statbuf to statbuf hash table */
-static void add_to_ino_dev_hashtable(const struct stat *statbuf, const char *name)
-{
- int i;
- size_t s;
- ino_dev_hashtable_bucket_t *bucket;
-
- i = hash_inode(statbuf->st_ino);
- s = name ? strlen(name) : 0;
- bucket = xmalloc(sizeof(ino_dev_hashtable_bucket_t) + s);
- bucket->ino = statbuf->st_ino;
- bucket->dev = statbuf->st_dev;
- if (name)
- strcpy(bucket->name, name);
- else
- bucket->name[0] = '\0';
- bucket->next = ino_dev_hashtable[i];
- ino_dev_hashtable[i] = bucket;
-}
-
-/* Clear statbuf hash table */
-static void reset_ino_dev_hashtable(void)
-{
- int i;
- ino_dev_hashtable_bucket_t *bucket;
-
- for (i = 0; i < HASH_SIZE; i++) {
- while (ino_dev_hashtable[i] != NULL) {
- bucket = ino_dev_hashtable[i]->next;
- free(ino_dev_hashtable[i]);
- ino_dev_hashtable[i] = bucket;
- }
- }
-}
-
/* tiny recursive du */
static long du(char *filename)
{
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 >> 1);
}
closedir(dir);
print(sum, filename);
- }
- else if (statbuf.st_nlink > 1 && !count_hardlinks) {
+ } 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 {
+ } else {
add_to_ino_dev_hashtable(&statbuf, NULL);
}
}
print = print_normal;
/* parse argv[] */
- while ((c = getopt(argc, argv, "sl"
-#ifdef BB_FEATURE_HUMAN_READABLE
-"hm"
+ while ((c = getopt(argc, argv, "slx"
+#ifdef CONFIG_FEATURE_HUMAN_READABLE
+ "hm"
#endif
-"k")) != EOF) {
- switch (c) {
- case 's':
- print = print_summary;
- break;
- case 'l':
- count_hardlinks = 1;
- break;
-#ifdef BB_FEATURE_HUMAN_READABLE
- case 'h': disp_hr = 0; break;
- case 'm': disp_hr = MEGABYTE; break;
+ "k")) != EOF) {
+ switch (c) {
+ case 's':
+ 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:
- show_usage();
- }
+ case 'k':
+ break;
+ default:
+ show_usage();
+ }
}
/* go through remaining args (if any) */
} else {
long sum;
- for (i=optind; i < argc; i++) {
+ for (i = optind; i < argc; i++) {
sum = du(argv[i]);
- if(is_directory(argv[i], FALSE, NULL)==FALSE) {
+ if (is_directory(argv[i], FALSE, NULL) == FALSE) {
print_normal(sum, argv[i]);
}
reset_ino_dev_hashtable();
return status;
}
-/* $Id: du.c,v 1.50 2001/06/30 17:54:20 andersen Exp $ */
+/* $Id: du.c,v 1.55 2002/08/23 07:28:45 aaronl Exp $ */
/*
Local Variables:
c-file-style: "linux"
projects / oweals / busybox.git / blobdiff