Imported reiserfsprogs-3.6.20

include/reiserfs/hash.h

@@ -0,0 +1,52 @@
+/*
+ *  Copyright 2000-2004 by Hans Reiser, licensing governed by 
+ *  reiserfsprogs/README
+ */
+
+#ifndef REISERFS_HASH_H
+#define REISERFS_HASH_H
+
+#include "misc/types.h"
+
+#define UNSET_HASH 0 // read_super will guess about, what hash names
+                     // in directories were sorted with
+
+enum {
+    REISERFS_HASH_TEA	= 0x1,
+    REISERFS_HASH_YURA	= 0x2,
+    REISERFS_HASH_R5	= 0x3,
+    REISERFS_HASH_LAST
+};
+
+#define DEFAULT_HASH REISERFS_HASH_R5
+
+/* hashes.c */
+extern __u32 reiserfs_hash_keyed (const char *msg, int len);
+
+extern __u32 reiserfs_hash_yura (const char *msg, int len);
+
+extern __u32 reiserfs_hash_r5 (const char *msg, int len);
+
+extern int reiserfs_hash_count (void);
+
+extern int reiserfs_hash_correct (hashf_t *func, 
+				  char * name, 
+				  int namelen, 
+				  __u32 offset);
+
+extern int reiserfs_hash_find (char * name, 
+			       int namelen, 
+			       __u32 deh_offset, 
+			       unsigned int code_to_try_first);
+
+extern char *reiserfs_hash_name (unsigned int code);
+
+extern int reiserfs_hash_code (hashf_t func);
+
+extern hashf_t reiserfs_hash_func (unsigned int code);
+
+extern hashf_t reiserfs_hash_get (char * hash);
+
+extern __u32 reiserfs_hash_value (hashf_t func, char * name, int namelen);
+
+#endif