cache.h File Reference

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Data Structures
struct	_HfsCPrivateCache
struct	_HfsCPrivateCacheTable
struct	_HfsCPrivateExtent

Macros
#define	CR_ADD_CST   16
#define	CR_BTREE_ATTR   7
#define	CR_BTREE_CAT   6
#define	CR_BTREE_CAT_JIB   14 /* journal info block */
#define	CR_BTREE_CAT_JL   15 /* journal */
#define	CR_BTREE_EXT_0   8
#define	CR_BTREE_EXT_ALLOC   12
#define	CR_BTREE_EXT_ATTR   11
#define	CR_BTREE_EXT_CAT   9
#define	CR_BTREE_EXT_EXT   10 /* should not happen ! */
#define	CR_BTREE_EXT_START   13 /* unneeded in current code */
#define	CR_NEW_ALLOC_DIV
#define	CR_NULL   0 /* reserved */
#define	CR_OVER_DIV
#define	CR_PRIM_ALLOC   4
#define	CR_PRIM_ATTR   3
#define	CR_PRIM_CAT   1
#define	CR_PRIM_EXT   2
#define	CR_PRIM_START   5
#define	CR_SHIFT   8 /* number of bits to shift start_block by */

Typedefs
typedef struct _HfsCPrivateCache	HfsCPrivateCache
typedef struct _HfsCPrivateCacheTable	HfsCPrivateCacheTable
typedef struct _HfsCPrivateExtent	HfsCPrivateExtent

Functions
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_move_extent (HfsCPrivateCache *cache, uint32_t old_start, uint32_t new_start)
HfsCPrivateExtent *	hfsc_cache_search_extent (HfsCPrivateCache *cache, uint32_t start)
void	hfsc_delete_cache (HfsCPrivateCache *cache)
HfsCPrivateCache *	hfsc_new_cache (unsigned int block_number, unsigned int file_number)

Macro Definition Documentation

CR_ADD_CST

#define CR_ADD_CST   16

CR_BTREE_ATTR

#define CR_BTREE_ATTR   7

CR_BTREE_CAT

#define CR_BTREE_CAT   6

CR_BTREE_CAT_JIB

#define CR_BTREE_CAT_JIB   14 /* journal info block */

CR_BTREE_CAT_JL

#define CR_BTREE_CAT_JL   15 /* journal */

CR_BTREE_EXT_0

#define CR_BTREE_EXT_0   8

CR_BTREE_EXT_ALLOC

#define CR_BTREE_EXT_ALLOC   12

CR_BTREE_EXT_ATTR

#define CR_BTREE_EXT_ATTR   11

CR_BTREE_EXT_CAT

#define CR_BTREE_EXT_CAT   9

CR_BTREE_EXT_EXT

#define CR_BTREE_EXT_EXT   10 /* should not happen ! */

CR_BTREE_EXT_START

#define CR_BTREE_EXT_START   13 /* unneeded in current code */

CR_NEW_ALLOC_DIV

#define CR_NEW_ALLOC_DIV

Value:

                                      4 /* divide the size of the first alloc table
                                      by this value to allocate next tables */

CR_NULL

#define CR_NULL   0 /* reserved */

CR_OVER_DIV

#define CR_OVER_DIV

Value:

                                      16 /* alloc a table for (1+1/CR_OVER_DIV) *
                                      file_number + CR_ADD_CST */

CR_PRIM_ALLOC

#define CR_PRIM_ALLOC   4

CR_PRIM_ATTR

#define CR_PRIM_ATTR   3

CR_PRIM_CAT

#define CR_PRIM_CAT   1

CR_PRIM_EXT

#define CR_PRIM_EXT   2

CR_PRIM_START

#define CR_PRIM_START   5

CR_SHIFT

#define CR_SHIFT   8 /* number of bits to shift start_block by */

Typedef Documentation

HfsCPrivateCache

typedef struct _HfsCPrivateCache HfsCPrivateCache

HfsCPrivateCacheTable

typedef struct _HfsCPrivateCacheTable HfsCPrivateCacheTable

HfsCPrivateExtent

typedef struct _HfsCPrivateExtent HfsCPrivateExtent

Function Documentation

hfsc_cache_add_extent()

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
	)

hfsc_cache_move_extent()

HfsCPrivateExtent * hfsc_cache_move_extent	(	HfsCPrivateCache *	cache,
		uint32_t	old_start,
		uint32_t	new_start
	)

hfsc_cache_search_extent()

HfsCPrivateExtent * hfsc_cache_search_extent	(	HfsCPrivateCache *	cache,
		uint32_t	start
	)

hfsc_delete_cache()

void hfsc_delete_cache

(

HfsCPrivateCache *

cache

)

hfsc_new_cache()

HfsCPrivateCache * hfsc_new_cache	(	unsigned int	block_number,
		unsigned int	file_number
	)