X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=libbb%2Finode_hash.c;h=78c1b0f9e929865ea9c720d3c5f30a0d9ac8fbb5;hb=516a0ca2dc92d9ea103535863102cc5425fe648e;hp=fbcd813277b8db911832a6174cce562b81462364;hpb=c7bda1ce659294d6e22c06e087f6f265983c7578;p=oweals%2Fbusybox.git

diff --git a/libbb/inode_hash.c b/libbb/inode_hash.c
index fbcd81327..78c1b0f9e 100644
--- a/libbb/inode_hash.c
+++ b/libbb/inode_hash.c
@@ -5,20 +5,7 @@
  * Copyright (C) many different people.
  * If you wrote this, please 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
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
  */
 
 #include <stdio.h>
@@ -26,86 +13,80 @@
 #include <string.h>
 #include "libbb.h"
 
-#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];
+	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];
+#define HASH_SIZE	311		/* Should be prime */
+#define hash_inode(i)	((i) % 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 *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)
 {
 	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;
 }
 
-#ifdef CONFIG_FEATURE_CLEAN_UP
+#if ENABLE_FEATURE_CLEAN_UP
 /* Clear statbuf hash table */
 void 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;
 }
+#else
+void reset_ino_dev_hashtable(void);
 #endif
-
-
-/* END CODE */
-/*
-Local Variables:
-c-file-style: "linux"
-c-basic-offset: 4
-tab-width: 4
-End:
-*/