15c03270bSAxel Dörfler /* 2*4fc4f2c8SAxel Dörfler * Copyright 2004-2008, Haiku Inc. All Rights Reserved. 39de65b05SAxel Dörfler * Distributed under the terms of the MIT License. 4a1978b5cSAxel Dörfler */ 5a1978b5cSAxel Dörfler #ifndef _FS_CACHE_H 6a1978b5cSAxel Dörfler #define _FS_CACHE_H 7a1978b5cSAxel Dörfler 87a1b4ef3SAxel Dörfler /*! File System File and Block Caches */ 95c03270bSAxel Dörfler 10a1978b5cSAxel Dörfler 11a1978b5cSAxel Dörfler #include <fs_interface.h> 12a1978b5cSAxel Dörfler 13a1978b5cSAxel Dörfler 14*4fc4f2c8SAxel Dörfler enum { 15*4fc4f2c8SAxel Dörfler TRANSACTION_WRITTEN, 16*4fc4f2c8SAxel Dörfler TRANSACTION_ABORTED, 17*4fc4f2c8SAxel Dörfler TRANSACTION_ENDED 18*4fc4f2c8SAxel Dörfler }; 19*4fc4f2c8SAxel Dörfler 20*4fc4f2c8SAxel Dörfler typedef void (*transaction_notification_hook)(int32 id, int32 event, 21*4fc4f2c8SAxel Dörfler void *data); 22060b0282SAxel Dörfler 23a1978b5cSAxel Dörfler #ifdef __cplusplus 24a1978b5cSAxel Dörfler extern "C" { 25a1978b5cSAxel Dörfler #endif 26a1978b5cSAxel Dörfler 27060b0282SAxel Dörfler /* transactions */ 2886c3e70cSAxel Dörfler extern int32 cache_start_transaction(void *_cache); 2986c3e70cSAxel Dörfler extern status_t cache_sync_transaction(void *_cache, int32 id); 301fbe3ccdSIngo Weinhold extern status_t cache_end_transaction(void *_cache, int32 id, 311fbe3ccdSIngo Weinhold transaction_notification_hook hook, void *data); 3286c3e70cSAxel Dörfler extern status_t cache_abort_transaction(void *_cache, int32 id); 331fbe3ccdSIngo Weinhold extern int32 cache_detach_sub_transaction(void *_cache, int32 id, 341fbe3ccdSIngo Weinhold transaction_notification_hook hook, void *data); 3586c3e70cSAxel Dörfler extern status_t cache_abort_sub_transaction(void *_cache, int32 id); 3686c3e70cSAxel Dörfler extern status_t cache_start_sub_transaction(void *_cache, int32 id); 37*4fc4f2c8SAxel Dörfler extern status_t cache_add_transaction_listener(void *_cache, int32 id, 38*4fc4f2c8SAxel Dörfler transaction_notification_hook hook, void *data); 39*4fc4f2c8SAxel Dörfler extern status_t cache_remove_transaction_listener(void *_cache, int32 id, 40*4fc4f2c8SAxel Dörfler transaction_notification_hook hook, void *data); 411fbe3ccdSIngo Weinhold extern status_t cache_next_block_in_transaction(void *_cache, int32 id, 421fbe3ccdSIngo Weinhold uint32 *_cookie, off_t *_blockNumber, void **_data, 431fbe3ccdSIngo Weinhold void **_unchangedData); 44ca7c5a9eSAxel Dörfler extern int32 cache_blocks_in_transaction(void *_cache, int32 id); 45ca7c5a9eSAxel Dörfler extern int32 cache_blocks_in_sub_transaction(void *_cache, int32 id); 46060b0282SAxel Dörfler 47060b0282SAxel Dörfler /* block cache */ 48060b0282SAxel Dörfler extern void block_cache_delete(void *_cache, bool allowWrites); 491fbe3ccdSIngo Weinhold extern void *block_cache_create(int fd, off_t numBlocks, size_t blockSize, 501fbe3ccdSIngo Weinhold bool readOnly); 51060b0282SAxel Dörfler extern status_t block_cache_sync(void *_cache); 525c03270bSAxel Dörfler extern status_t block_cache_sync_etc(void *_cache, off_t blockNumber, 535c03270bSAxel Dörfler size_t numBlocks); 541fbe3ccdSIngo Weinhold extern status_t block_cache_make_writable(void *_cache, off_t blockNumber, 551fbe3ccdSIngo Weinhold int32 transaction); 561fbe3ccdSIngo Weinhold extern void *block_cache_get_writable_etc(void *_cache, off_t blockNumber, 571fbe3ccdSIngo Weinhold off_t base, off_t length, int32 transaction); 581fbe3ccdSIngo Weinhold extern void *block_cache_get_writable(void *_cache, off_t blockNumber, 591fbe3ccdSIngo Weinhold int32 transaction); 601fbe3ccdSIngo Weinhold extern void *block_cache_get_empty(void *_cache, off_t blockNumber, 611fbe3ccdSIngo Weinhold int32 transaction); 621fbe3ccdSIngo Weinhold extern const void *block_cache_get_etc(void *_cache, off_t blockNumber, 631fbe3ccdSIngo Weinhold off_t base, off_t length); 64060b0282SAxel Dörfler extern const void *block_cache_get(void *_cache, off_t blockNumber); 651fbe3ccdSIngo Weinhold extern status_t block_cache_set_dirty(void *_cache, off_t blockNumber, 661fbe3ccdSIngo Weinhold bool isDirty, int32 transaction); 67060b0282SAxel Dörfler extern void block_cache_put(void *_cache, off_t blockNumber); 68060b0282SAxel Dörfler 69a1978b5cSAxel Dörfler /* file cache */ 703d268edaSAxel Dörfler extern void *file_cache_create(dev_t mountID, ino_t vnodeID, off_t size); 71a1978b5cSAxel Dörfler extern void file_cache_delete(void *_cacheRef); 72a1978b5cSAxel Dörfler extern status_t file_cache_set_size(void *_cacheRef, off_t size); 7386c3e70cSAxel Dörfler extern status_t file_cache_sync(void *_cache); 74a1978b5cSAxel Dörfler 753d268edaSAxel Dörfler extern status_t file_cache_read(void *_cacheRef, void *cookie, off_t offset, 763d268edaSAxel Dörfler void *bufferBase, size_t *_size); 773d268edaSAxel Dörfler extern status_t file_cache_write(void *_cacheRef, void *cookie, off_t offset, 781fbe3ccdSIngo Weinhold const void *buffer, size_t *_size); 79a1978b5cSAxel Dörfler 803d268edaSAxel Dörfler /* file map */ 814a31d30eSAxel Dörfler extern void *file_map_create(dev_t mountID, ino_t vnodeID, off_t size); 823d268edaSAxel Dörfler extern void file_map_delete(void *_map); 833d268edaSAxel Dörfler extern void file_map_set_size(void *_map, off_t size); 843d268edaSAxel Dörfler extern void file_map_invalidate(void *_map, off_t offset, off_t size); 853d268edaSAxel Dörfler extern status_t file_map_translate(void *_map, off_t offset, size_t size, 863d268edaSAxel Dörfler struct file_io_vec *vecs, size_t *_count); 873d268edaSAxel Dörfler 88a1978b5cSAxel Dörfler #ifdef __cplusplus 89a1978b5cSAxel Dörfler } 90a1978b5cSAxel Dörfler #endif 91a1978b5cSAxel Dörfler 92a1978b5cSAxel Dörfler #endif /* _FS_CACHE_H */ 93