1 files changed, 118 insertions, 0 deletions
diff --git a/libparted/fs/r/hfs/cache.h b/libparted/fs/r/hfs/cache.h
new file mode 100644
index 0000000..d009fd9
--- /dev/null
+++ b/libparted/fs/r/hfs/cache.h
@@ -0,0 +1,118 @@
+/*
+    libparted - a library for manipulating disk partitions
+    Copyright (C) 2004-2005, 2007, 2009-2014, 2019-2023 Free Software
+    Foundation, Inc.
+
+    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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef _CACHE_H
+#define _CACHE_H
+
+#include <parted/parted.h>
+#include <parted/endian.h>
+#include <parted/debug.h>
+
+#include "hfs.h"
+
+/* CR => CACHE REF */
+#define CR_NULL			 0 /* reserved */
+#define CR_PRIM_CAT		 1
+#define CR_PRIM_EXT		 2
+#define CR_PRIM_ATTR		 3
+#define CR_PRIM_ALLOC		 4
+#define CR_PRIM_START		 5
+#define CR_BTREE_CAT		 6
+#define CR_BTREE_ATTR		 7
+#define CR_BTREE_EXT_0		 8
+#define CR_BTREE_EXT_CAT	 9
+#define CR_BTREE_EXT_EXT	10 /* should not happen ! */
+#define CR_BTREE_EXT_ATTR	11
+#define CR_BTREE_EXT_ALLOC	12
+#define CR_BTREE_EXT_START	13 /* unneeded in current code */
+#define CR_BTREE_CAT_JIB	14 /* journal info block */
+#define CR_BTREE_CAT_JL		15 /* journal */
+/* 16 -> 31 || high order bit */   /* reserved */
+
+/* tuning */
+#define CR_SHIFT		 8 /* number of bits to shift start_block by */
+				   /* to get the index of the linked list */
+#define CR_OVER_DIV		16 /* alloc a table for (1+1/CR_OVER_DIV) *
+				      file_number + CR_ADD_CST */
+#define CR_ADD_CST		16
+#define CR_NEW_ALLOC_DIV	 4 /* divide the size of the first alloc table
+				      by this value to allocate next tables */
+
+/* See DOC for an explaination of this structure */
+/* Access read only from outside cache.c */
+struct _HfsCPrivateExtent {
+	struct _HfsCPrivateExtent*	next;
+	uint32_t			ext_start;
+	uint32_t			ext_length;
+	uint32_t			ref_block;
+	uint16_t			ref_offset;
+	uint8_t				sect_by_block;
+	unsigned			where : 5;
+	unsigned			ref_index : 3; /* 0 -> 7 */
+};
+typedef struct _HfsCPrivateExtent HfsCPrivateExtent;
+
+/* Internaly used by cache.c for custom memory managment only */
+struct _HfsCPrivateCacheTable {
+	struct _HfsCPrivateCacheTable*	next_cache;
+	HfsCPrivateExtent*		table;
+	unsigned int			table_size;
+	unsigned int			table_first_free;
+	/* first_elemt ? */
+};
+typedef struct _HfsCPrivateCacheTable HfsCPrivateCacheTable;
+
+/* Internaly used by cache.c for custom memory managment
+   and cache handling only */
+struct _HfsCPrivateCache {
+	HfsCPrivateCacheTable*		table_list;
+	HfsCPrivateCacheTable*		last_table;
+	HfsCPrivateExtent**		linked_ref;
+	unsigned int			linked_ref_size;
+	unsigned int			block_number;
+	unsigned int			first_cachetable_size;
+	unsigned int			needed_alloc_size;
+};
+typedef struct _HfsCPrivateCache HfsCPrivateCache;
+
+HfsCPrivateCache*
+hfsc_new_cache(unsigned int block_number, unsigned int file_number);
+
+void
+hfsc_delete_cache(HfsCPrivateCache* cache);
+
+HfsCPrivateExtent*
+hfsc_cache_add_extent(HfsCPrivateCache* cache, uint32_t start, uint32_t length,
+		      uint32_t block, uint16_t offset, uint8_t sbb,
+		      uint8_t where, uint8_t index);
+
+HfsCPrivateExtent*
+hfsc_cache_search_extent(HfsCPrivateCache* cache, uint32_t start);
+
+HfsCPrivateExtent*
+hfsc_cache_move_extent(HfsCPrivateCache* cache, uint32_t old_start,
+			uint32_t new_start);
+
+static __inline__ unsigned int
+hfsc_cache_needed_buffer(HfsCPrivateCache* cache)
+{
+	return cache->needed_alloc_size;
+}
+
+#endif /* _CACHE_H */