[apple/hfs.git] / CopyHFSMeta / Data.h

#ifndef _DATA_H
# define _DATA_H

/*
 * Data-manipulating functions and structures, used to
 * create the skeleton copy.
 */
struct DeviceInfo;
struct VolumeDescriptor;
struct IOWrapper;

/*
 * We treat each data structure in the filesystem as
 * a <start, length> pair.
 */
struct Extents {
	off_t base;
	off_t length;
};
typedef struct Extents Extents_t;

#define kExtentCount	100

/*
 * The in-core representation consists of a linked
 * list of an array of extents, up to 100 in each element.
 */
struct ExtentList {
	size_t count;
	Extents_t extents[kExtentCount];
	struct ExtentList *next;
};
typedef struct ExtentList ExtentList_t;

/*
 * The in-core description of the volume:  an input source,
 * a description of the volume, the linked list of extents,
 * the total number of bytes, and the number of linked list
 * elements.
 */
struct VolumeObjects {
	struct DeviceInfo *devp;
	struct VolumeDescriptor *vdp;
	size_t count;
	off_t byteCount;
	ExtentList_t *list;
};
typedef struct VolumeObjects VolumeObjects_t;

extern VolumeObjects_t *InitVolumeObject(struct DeviceInfo *devp, struct VolumeDescriptor *vdp);
extern int AddExtent(VolumeObjects_t *vop, off_t start, off_t length);
extern void PrintVolumeObject(VolumeObjects_t*);
extern int CopyObjectsToDest(VolumeObjects_t*, struct IOWrapper *wrapper, off_t skip);

extern void WriteGatheredData(const char *, VolumeObjects_t*);

#endif /* _DATA_H */
Commit	Line	Data
a56bdb9d A	1	#ifndef _DATA_H
	2	# define _DATA_H
	3
	4	/*
	5	* Data-manipulating functions and structures, used to
	6	* create the skeleton copy.
	7	*/
	8	struct DeviceInfo;
	9	struct VolumeDescriptor;
	10	struct IOWrapper;
	11
	12	/*
	13	* We treat each data structure in the filesystem as
	14	* a <start, length> pair.
	15	*/
	16	struct Extents {
	17	off_t base;
	18	off_t length;
	19	};
	20	typedef struct Extents Extents_t;
	21
	22	#define kExtentCount 100
	23
	24	/*
	25	* The in-core representation consists of a linked
	26	* list of an array of extents, up to 100 in each element.
	27	*/
	28	struct ExtentList {
	29	size_t count;
	30	Extents_t extents[kExtentCount];
	31	struct ExtentList *next;
	32	};
	33	typedef struct ExtentList ExtentList_t;
	34
	35	/*
	36	* The in-core description of the volume: an input source,
	37	* a description of the volume, the linked list of extents,
	38	* the total number of bytes, and the number of linked list
	39	* elements.
	40	*/
	41	struct VolumeObjects {
	42	struct DeviceInfo *devp;
	43	struct VolumeDescriptor *vdp;
	44	size_t count;
	45	off_t byteCount;
	46	ExtentList_t *list;
	47	};
	48	typedef struct VolumeObjects VolumeObjects_t;
	49
	50	extern VolumeObjects_t InitVolumeObject(struct DeviceInfo devp, struct VolumeDescriptor *vdp);
	51	extern int AddExtent(VolumeObjects_t *vop, off_t start, off_t length);
	52	extern void PrintVolumeObject(VolumeObjects_t*);
	53	extern int CopyObjectsToDest(VolumeObjects_t, struct IOWrapper wrapper, off_t skip);
	54
	55	extern void WriteGatheredData(const char , VolumeObjects_t);
	56
	57	#endif /* _DATA_H */