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-rw-r--r--release/src/router/busybox/libbb/inode_hash.c101
1 files changed, 41 insertions, 60 deletions
diff --git a/release/src/router/busybox/libbb/inode_hash.c b/release/src/router/busybox/libbb/inode_hash.c
index 790af8f3..b32bd26b 100644
--- a/release/src/router/busybox/libbb/inode_hash.c
+++ b/release/src/router/busybox/libbb/inode_hash.c
@@ -2,105 +2,86 @@
/*
* Utility routines.
*
- * Copyright (C) tons of folks. Tracking down who wrote what
- * isn't something I'm going to worry about... If you wrote something
- * here, please feel free to acknowledge your work.
- *
- * 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
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * Based in part on code from sash, Copyright (c) 1999 by David I. Bell
- * Permission has been granted to redistribute this code under the GPL.
+ * Copyright (C) many different people.
+ * If you wrote this, please acknowledge your work.
*
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
#include "libbb.h"
+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;
+
#define HASH_SIZE 311 /* Should be prime */
#define hash_inode(i) ((i) % HASH_SIZE)
-static ino_dev_hashtable_bucket_t *ino_dev_hashtable[HASH_SIZE];
+/* array of [HASH_SIZE] elements */
+static ino_dev_hashtable_bucket_t **ino_dev_hashtable;
/*
- * 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.
+ * Return name if statbuf->st_ino && statbuf->st_dev are recorded in
+ * ino_dev_hashtable, else return NULL
*/
-int is_in_ino_dev_hashtable(const struct stat *statbuf, char **name)
+char* FAST_FUNC is_in_ino_dev_hashtable(const struct stat *statbuf)
{
ino_dev_hashtable_bucket_t *bucket;
+ if (!ino_dev_hashtable)
+ return NULL;
+
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;
+ if ((bucket->ino == statbuf->st_ino)
+ && (bucket->dev == statbuf->st_dev)
+ ) {
+ return bucket->name;
+ }
+ bucket = bucket->next;
}
- return 0;
+ return NULL;
}
/* Add statbuf to statbuf hash table */
-void add_to_ino_dev_hashtable(const struct stat *statbuf, const char *name)
+void FAST_FUNC 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);
+ if (!name)
+ name = "";
+ bucket = xmalloc(sizeof(ino_dev_hashtable_bucket_t) + strlen(name));
bucket->ino = statbuf->st_ino;
bucket->dev = statbuf->st_dev;
- if (name)
- strcpy(bucket->name, name);
- else
- bucket->name[0] = '\0';
+ strcpy(bucket->name, name);
+
+ if (!ino_dev_hashtable)
+ ino_dev_hashtable = xzalloc(HASH_SIZE * sizeof(*ino_dev_hashtable));
+
bucket->next = ino_dev_hashtable[i];
ino_dev_hashtable[i] = bucket;
}
+#if ENABLE_DU || ENABLE_FEATURE_CLEAN_UP
/* Clear statbuf hash table */
-void reset_ino_dev_hashtable(void)
+void FAST_FUNC reset_ino_dev_hashtable(void)
{
int i;
ino_dev_hashtable_bucket_t *bucket;
- for (i = 0; i < HASH_SIZE; i++) {
+ for (i = 0; ino_dev_hashtable && 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;
}
}
+ free(ino_dev_hashtable);
+ ino_dev_hashtable = NULL;
}
-
-
-/* END CODE */
-/*
-Local Variables:
-c-file-style: "linux"
-c-basic-offset: 4
-tab-width: 4
-End:
-*/
+#endif