1 /* 2 * Copyright 2004-2008, Haiku Inc. All Rights Reserved. 3 * Distributed under the terms of the MIT License. 4 */ 5 #ifndef _FSSH_FS_CACHE_H 6 #define _FSSH_FS_CACHE_H 7 8 //! File System File and Block Caches 9 10 11 #include "fssh_fs_interface.h" 12 13 14 enum { 15 FSSH_TRANSACTION_WRITTEN = 0x01, 16 FSSH_TRANSACTION_ABORTED = 0x02, 17 FSSH_TRANSACTION_ENDED = 0x04, 18 FSSH_TRANSACTION_IDLE = 0x08 19 }; 20 21 /* file map modes */ 22 enum { 23 FSSH_FILE_MAP_CACHE_ON_DEMAND = 0x01, /* default mode */ 24 FSSH_FILE_MAP_CACHE_ALL = 0x02 25 }; 26 27 typedef void (*fssh_transaction_notification_hook)(int32_t id, int32_t event, 28 void *data); 29 30 #ifdef __cplusplus 31 extern "C" { 32 #endif 33 34 /* transactions */ 35 extern int32_t fssh_cache_start_transaction(void *_cache); 36 extern fssh_status_t fssh_cache_sync_transaction(void *_cache, int32_t id); 37 extern fssh_status_t fssh_cache_end_transaction(void *_cache, int32_t id, 38 fssh_transaction_notification_hook hook, 39 void *data); 40 extern fssh_status_t fssh_cache_abort_transaction(void *_cache, int32_t id); 41 extern int32_t fssh_cache_detach_sub_transaction(void *_cache, 42 int32_t id, fssh_transaction_notification_hook hook, 43 void *data); 44 extern fssh_status_t fssh_cache_abort_sub_transaction(void *_cache, 45 int32_t id); 46 extern fssh_status_t fssh_cache_start_sub_transaction(void *_cache, 47 int32_t id); 48 extern fssh_status_t fssh_cache_add_transaction_listener(void *_cache, 49 int32_t id, int32_t events, 50 fssh_transaction_notification_hook hook, 51 void *data); 52 extern fssh_status_t fssh_cache_remove_transaction_listener(void *_cache, 53 int32_t id, fssh_transaction_notification_hook hook, 54 void *data); 55 extern fssh_status_t fssh_cache_next_block_in_transaction(void *_cache, 56 int32_t id, bool mainOnly, long *_cookie, 57 fssh_off_t *_blockNumber, void **_data, 58 void **_unchangedData); 59 extern int32_t fssh_cache_blocks_in_transaction(void *_cache, 60 int32_t id); 61 extern int32_t fssh_cache_blocks_in_main_transaction(void *_cache, 62 int32_t id); 63 extern int32_t fssh_cache_blocks_in_sub_transaction(void *_cache, 64 int32_t id); 65 extern bool fssh_cache_has_block_in_transaction(void *_cache, 66 int32_t id, fssh_off_t blockNumber); 67 68 /* block cache */ 69 extern void fssh_block_cache_delete(void *_cache, bool allowWrites); 70 extern void * fssh_block_cache_create(int fd, fssh_off_t numBlocks, 71 fssh_size_t blockSize, bool readOnly); 72 extern fssh_status_t fssh_block_cache_sync(void *_cache); 73 extern fssh_status_t fssh_block_cache_sync_etc(void *_cache, 74 fssh_off_t blockNumber, fssh_size_t numBlocks); 75 extern void fssh_block_cache_discard(void *_cache, 76 fssh_off_t blockNumber, fssh_size_t numBlocks); 77 extern fssh_status_t fssh_block_cache_make_writable(void *_cache, 78 fssh_off_t blockNumber, int32_t transaction); 79 extern void * fssh_block_cache_get_writable_etc(void *_cache, 80 fssh_off_t blockNumber, fssh_off_t base, 81 fssh_off_t length, int32_t transaction); 82 extern void * fssh_block_cache_get_writable(void *_cache, 83 fssh_off_t blockNumber, int32_t transaction); 84 extern void * fssh_block_cache_get_empty(void *_cache, 85 fssh_off_t blockNumber, int32_t transaction); 86 extern const void * fssh_block_cache_get_etc(void *_cache, 87 fssh_off_t blockNumber, fssh_off_t base, 88 fssh_off_t length); 89 extern const void * fssh_block_cache_get(void *_cache, 90 fssh_off_t blockNumber); 91 extern fssh_status_t fssh_block_cache_set_dirty(void *_cache, 92 fssh_off_t blockNumber, bool isDirty, 93 int32_t transaction); 94 extern void fssh_block_cache_put(void *_cache, 95 fssh_off_t blockNumber); 96 97 /* file cache */ 98 extern void * fssh_file_cache_create(fssh_mount_id mountID, 99 fssh_vnode_id vnodeID, fssh_off_t size); 100 extern void fssh_file_cache_delete(void *_cacheRef); 101 extern void fssh_file_cache_enable(void *_cacheRef); 102 extern fssh_status_t fssh_file_cache_disable(void *_cacheRef); 103 extern bool fssh_file_cache_is_enabled(void *_cacheRef); 104 extern fssh_status_t fssh_file_cache_set_size(void *_cacheRef, 105 fssh_off_t size); 106 extern fssh_status_t fssh_file_cache_sync(void *_cache); 107 108 extern fssh_status_t fssh_file_cache_read(void *_cacheRef, void *cookie, 109 fssh_off_t offset, void *bufferBase, 110 fssh_size_t *_size); 111 extern fssh_status_t fssh_file_cache_write(void *_cacheRef, void *cookie, 112 fssh_off_t offset, const void *buffer, 113 fssh_size_t *_size); 114 115 /* file map */ 116 extern void * fssh_file_map_create(fssh_mount_id mountID, 117 fssh_vnode_id vnodeID, fssh_off_t size); 118 extern void fssh_file_map_delete(void *_map); 119 extern void fssh_file_map_set_size(void *_map, fssh_off_t size); 120 extern void fssh_file_map_invalidate(void *_map, fssh_off_t offset, 121 fssh_off_t size); 122 extern fssh_status_t fssh_file_map_set_mode(void *_map, uint32_t mode); 123 extern fssh_status_t fssh_file_map_translate(void *_map, fssh_off_t offset, 124 fssh_size_t size, struct fssh_file_io_vec *vecs, 125 fssh_size_t *_count, fssh_size_t align); 126 127 /* entry cache */ 128 extern fssh_status_t fssh_entry_cache_add(fssh_dev_t mountID, 129 fssh_ino_t dirID, const char* name, 130 fssh_ino_t nodeID); 131 extern fssh_status_t fssh_entry_cache_add_missing(fssh_dev_t mountID, 132 fssh_ino_t dirID, const char* name); 133 extern fssh_status_t fssh_entry_cache_remove(fssh_dev_t mountID, 134 fssh_ino_t dirID, const char* name); 135 136 #ifdef __cplusplus 137 } 138 #endif 139 140 #endif /* _FSSH_FS_CACHE_H */ 141