Axel Dörfler
060b02824b
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9893 a95241bf-73f2-0310-859d-f6bbb57e9c96
53 lines
2.0 KiB
C
53 lines
2.0 KiB
C
/* File System File and Block Caches
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**
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** Distributed under the terms of the Haiku License.
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*/
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#ifndef _FS_CACHE_H
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#define _FS_CACHE_H
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#include <fs_interface.h>
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typedef void (*transaction_notification_hook)(int32);
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* transactions */
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extern int32 cache_transaction_start(void *_cache, transaction_notification_hook hook);
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extern status_t cache_transaction_sync(void *_cache, int32 id);
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extern status_t cache_transaction_end(void *_cache, int32 id);
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extern status_t cache_transaction_abort(void *_cache, int32 id);
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/* block cache */
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extern void block_cache_delete(void *_cache, bool allowWrites);
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extern void *block_cache_create(int fd, off_t numBlocks, size_t blockSize);
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extern status_t block_cache_sync(void *_cache);
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extern void *block_cache_get_writable_etc(void *_cache, off_t blockNumber, off_t base, off_t length, int32 transaction);
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extern void *block_cache_get_writable(void *_cache, off_t blockNumber, int32 transaction);
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extern void *block_cache_get_empty(void *_cache, off_t blockNumber, int32 transaction);
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extern const void *block_cache_get_etc(void *_cache, off_t blockNumber, off_t base, off_t length);
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extern const void *block_cache_get(void *_cache, off_t blockNumber);
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extern void block_cache_put(void *_cache, off_t blockNumber);
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/* file cache */
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extern void *file_cache_create(mount_id mountID, vnode_id vnodeID, off_t size, int fd);
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extern void file_cache_delete(void *_cacheRef);
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extern status_t file_cache_set_size(void *_cacheRef, off_t size);
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extern status_t file_cache_read_pages(void *_cacheRef, off_t offset,
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const iovec *vecs, size_t count, size_t *_numBytes);
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extern status_t file_cache_write_pages(void *_cacheRef, off_t offset,
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const iovec *vecs, size_t count, size_t *_numBytes);
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extern status_t file_cache_read(void *_cacheRef, off_t offset, void *bufferBase, size_t *_size);
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extern status_t file_cache_write(void *_cacheRef, off_t offset, const void *buffer, size_t *_size);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _FS_CACHE_H */
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