Commit | Line | Data |
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234b63a0 CM |
1 | #ifndef __BTRFS__ |
2 | #define __BTRFS__ | |
eb60ceac | 3 | |
e20d96d6 | 4 | #include <linux/fs.h> |
d6025579 | 5 | #include <linux/buffer_head.h> |
d6e4a428 | 6 | #include <linux/kobject.h> |
8ef97622 | 7 | #include "bit-radix.h" |
e20d96d6 | 8 | |
e089f05c | 9 | struct btrfs_trans_handle; |
79154b1b | 10 | struct btrfs_transaction; |
35b7e476 CM |
11 | extern struct kmem_cache *btrfs_trans_handle_cachep; |
12 | extern struct kmem_cache *btrfs_transaction_cachep; | |
13 | extern struct kmem_cache *btrfs_bit_radix_cachep; | |
2c90e5d6 | 14 | extern struct kmem_cache *btrfs_path_cachep; |
e089f05c | 15 | |
3768f368 | 16 | #define BTRFS_MAGIC "_BtRfS_M" |
eb60ceac | 17 | |
6407bf6d | 18 | #define BTRFS_ROOT_TREE_OBJECTID 1ULL |
0bd93ba0 CM |
19 | #define BTRFS_DEV_TREE_OBJECTID 2ULL |
20 | #define BTRFS_EXTENT_TREE_OBJECTID 3ULL | |
21 | #define BTRFS_FS_TREE_OBJECTID 4ULL | |
22 | #define BTRFS_ROOT_TREE_DIR_OBJECTID 5ULL | |
23 | #define BTRFS_FIRST_FREE_OBJECTID 6ULL | |
3768f368 | 24 | |
e20d96d6 CM |
25 | /* |
26 | * we can actually store much bigger names, but lets not confuse the rest | |
27 | * of linux | |
28 | */ | |
29 | #define BTRFS_NAME_LEN 255 | |
30 | ||
f254e52c CM |
31 | /* 32 bytes in various csum fields */ |
32 | #define BTRFS_CSUM_SIZE 32 | |
33 | ||
fec577fb CM |
34 | /* |
35 | * the key defines the order in the tree, and so it also defines (optimal) | |
36 | * block layout. objectid corresonds to the inode number. The flags | |
37 | * tells us things about the object, and is a kind of stream selector. | |
38 | * so for a given inode, keys with flags of 1 might refer to the inode | |
39 | * data, flags of 2 may point to file data in the btree and flags == 3 | |
40 | * may point to extents. | |
41 | * | |
42 | * offset is the starting byte offset for this key in the stream. | |
e2fa7227 CM |
43 | * |
44 | * btrfs_disk_key is in disk byte order. struct btrfs_key is always | |
45 | * in cpu native order. Otherwise they are identical and their sizes | |
46 | * should be the same (ie both packed) | |
fec577fb | 47 | */ |
e2fa7227 CM |
48 | struct btrfs_disk_key { |
49 | __le64 objectid; | |
f254e52c | 50 | __le32 flags; |
70b2befd | 51 | __le64 offset; |
e2fa7227 CM |
52 | } __attribute__ ((__packed__)); |
53 | ||
54 | struct btrfs_key { | |
eb60ceac | 55 | u64 objectid; |
f254e52c | 56 | u32 flags; |
70b2befd | 57 | u64 offset; |
eb60ceac CM |
58 | } __attribute__ ((__packed__)); |
59 | ||
fec577fb CM |
60 | /* |
61 | * every tree block (leaf or node) starts with this header. | |
62 | */ | |
bb492bb0 | 63 | struct btrfs_header { |
f254e52c | 64 | u8 csum[BTRFS_CSUM_SIZE]; |
3768f368 | 65 | u8 fsid[16]; /* FS specific uuid */ |
bb492bb0 | 66 | __le64 blocknr; /* which block this node is supposed to live in */ |
7f5c1516 | 67 | __le64 generation; |
4d775673 | 68 | __le64 owner; |
bb492bb0 CM |
69 | __le16 nritems; |
70 | __le16 flags; | |
9a6f11ed | 71 | u8 level; |
eb60ceac CM |
72 | } __attribute__ ((__packed__)); |
73 | ||
234b63a0 | 74 | #define BTRFS_MAX_LEVEL 8 |
123abc88 CM |
75 | #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->blocksize - \ |
76 | sizeof(struct btrfs_header)) / \ | |
77 | (sizeof(struct btrfs_disk_key) + sizeof(u64))) | |
78 | #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header)) | |
79 | #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->blocksize)) | |
236454df CM |
80 | #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
81 | sizeof(struct btrfs_item) - \ | |
82 | sizeof(struct btrfs_file_extent_item)) | |
eb60ceac | 83 | |
e20d96d6 | 84 | struct buffer_head; |
fec577fb CM |
85 | /* |
86 | * the super block basically lists the main trees of the FS | |
87 | * it currently lacks any block count etc etc | |
88 | */ | |
234b63a0 | 89 | struct btrfs_super_block { |
f254e52c | 90 | u8 csum[BTRFS_CSUM_SIZE]; |
87cbda5c | 91 | /* the first 3 fields must match struct btrfs_header */ |
3768f368 CM |
92 | u8 fsid[16]; /* FS specific uuid */ |
93 | __le64 blocknr; /* this block number */ | |
3768f368 | 94 | __le64 magic; |
123abc88 | 95 | __le32 blocksize; |
3768f368 CM |
96 | __le64 generation; |
97 | __le64 root; | |
98 | __le64 total_blocks; | |
99 | __le64 blocks_used; | |
2e635a27 | 100 | __le64 root_dir_objectid; |
b4100d64 | 101 | __le64 last_device_id; |
0bd93ba0 CM |
102 | /* fields below here vary with the underlying disk */ |
103 | __le64 device_block_start; | |
104 | __le64 device_num_blocks; | |
105 | __le64 device_root; | |
b4100d64 | 106 | __le64 device_id; |
cfaa7295 CM |
107 | } __attribute__ ((__packed__)); |
108 | ||
fec577fb | 109 | /* |
62e2749e | 110 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
111 | * the item in the leaf (relative to the start of the data area) |
112 | */ | |
0783fcfc | 113 | struct btrfs_item { |
e2fa7227 | 114 | struct btrfs_disk_key key; |
123abc88 | 115 | __le32 offset; |
0783fcfc | 116 | __le16 size; |
eb60ceac CM |
117 | } __attribute__ ((__packed__)); |
118 | ||
fec577fb CM |
119 | /* |
120 | * leaves have an item area and a data area: | |
121 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
122 | * | |
123 | * The data is separate from the items to get the keys closer together | |
124 | * during searches. | |
125 | */ | |
234b63a0 | 126 | struct btrfs_leaf { |
bb492bb0 | 127 | struct btrfs_header header; |
123abc88 | 128 | struct btrfs_item items[]; |
eb60ceac CM |
129 | } __attribute__ ((__packed__)); |
130 | ||
fec577fb CM |
131 | /* |
132 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
133 | * other blocks | |
134 | */ | |
123abc88 CM |
135 | struct btrfs_key_ptr { |
136 | struct btrfs_disk_key key; | |
137 | __le64 blockptr; | |
138 | } __attribute__ ((__packed__)); | |
139 | ||
234b63a0 | 140 | struct btrfs_node { |
bb492bb0 | 141 | struct btrfs_header header; |
123abc88 | 142 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
143 | } __attribute__ ((__packed__)); |
144 | ||
fec577fb | 145 | /* |
234b63a0 CM |
146 | * btrfs_paths remember the path taken from the root down to the leaf. |
147 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
148 | * to any other levels that are present. |
149 | * | |
150 | * The slots array records the index of the item or block pointer | |
151 | * used while walking the tree. | |
152 | */ | |
234b63a0 | 153 | struct btrfs_path { |
e20d96d6 | 154 | struct buffer_head *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 155 | int slots[BTRFS_MAX_LEVEL]; |
eb60ceac | 156 | }; |
5de08d7d | 157 | |
62e2749e CM |
158 | /* |
159 | * items in the extent btree are used to record the objectid of the | |
160 | * owner of the block and the number of references | |
161 | */ | |
162 | struct btrfs_extent_item { | |
163 | __le32 refs; | |
4d775673 | 164 | __le64 owner; |
62e2749e CM |
165 | } __attribute__ ((__packed__)); |
166 | ||
1e1d2701 | 167 | struct btrfs_inode_timespec { |
f254e52c | 168 | __le64 sec; |
1e1d2701 CM |
169 | __le32 nsec; |
170 | } __attribute__ ((__packed__)); | |
171 | ||
172 | /* | |
173 | * there is no padding here on purpose. If you want to extent the inode, | |
174 | * make a new item type | |
175 | */ | |
176 | struct btrfs_inode_item { | |
177 | __le64 generation; | |
178 | __le64 size; | |
179 | __le64 nblocks; | |
31f3c99b | 180 | __le64 block_group; |
1e1d2701 CM |
181 | __le32 nlink; |
182 | __le32 uid; | |
183 | __le32 gid; | |
184 | __le32 mode; | |
185 | __le32 rdev; | |
186 | __le16 flags; | |
187 | __le16 compat_flags; | |
188 | struct btrfs_inode_timespec atime; | |
189 | struct btrfs_inode_timespec ctime; | |
190 | struct btrfs_inode_timespec mtime; | |
191 | struct btrfs_inode_timespec otime; | |
192 | } __attribute__ ((__packed__)); | |
193 | ||
62e2749e | 194 | struct btrfs_dir_item { |
d6e4a428 | 195 | struct btrfs_disk_key location; |
62e2749e | 196 | __le16 flags; |
a8a2ee0c | 197 | __le16 name_len; |
62e2749e CM |
198 | u8 type; |
199 | } __attribute__ ((__packed__)); | |
200 | ||
201 | struct btrfs_root_item { | |
d6e4a428 CM |
202 | struct btrfs_inode_item inode; |
203 | __le64 root_dirid; | |
62e2749e CM |
204 | __le64 blocknr; |
205 | __le32 flags; | |
206 | __le64 block_limit; | |
207 | __le64 blocks_used; | |
208 | __le32 refs; | |
9f5fae2f | 209 | } __attribute__ ((__packed__)); |
62e2749e | 210 | |
236454df CM |
211 | #define BTRFS_FILE_EXTENT_REG 0 |
212 | #define BTRFS_FILE_EXTENT_INLINE 1 | |
213 | ||
9f5fae2f | 214 | struct btrfs_file_extent_item { |
71951f35 | 215 | __le64 generation; |
236454df | 216 | u8 type; |
9f5fae2f CM |
217 | /* |
218 | * disk space consumed by the extent, checksum blocks are included | |
219 | * in these numbers | |
220 | */ | |
221 | __le64 disk_blocknr; | |
222 | __le64 disk_num_blocks; | |
223 | /* | |
dee26a9f | 224 | * the logical offset in file blocks (no csums) |
9f5fae2f CM |
225 | * this extent record is for. This allows a file extent to point |
226 | * into the middle of an existing extent on disk, sharing it | |
227 | * between two snapshots (useful if some bytes in the middle of the | |
228 | * extent have changed | |
229 | */ | |
230 | __le64 offset; | |
231 | /* | |
232 | * the logical number of file blocks (no csums included) | |
233 | */ | |
234 | __le64 num_blocks; | |
235 | } __attribute__ ((__packed__)); | |
236 | ||
f254e52c CM |
237 | struct btrfs_csum_item { |
238 | u8 csum[BTRFS_CSUM_SIZE]; | |
239 | } __attribute__ ((__packed__)); | |
240 | ||
0bd93ba0 CM |
241 | struct btrfs_device_item { |
242 | __le16 pathlen; | |
b4100d64 | 243 | __le64 device_id; |
0bd93ba0 CM |
244 | } __attribute__ ((__packed__)); |
245 | ||
9078a3e1 CM |
246 | /* tag for the radix tree of block groups in ram */ |
247 | #define BTRFS_BLOCK_GROUP_DIRTY 0 | |
31f3c99b | 248 | #define BTRFS_BLOCK_GROUP_AVAIL 1 |
9078a3e1 CM |
249 | #define BTRFS_BLOCK_GROUP_HINTS 8 |
250 | #define BTRFS_BLOCK_GROUP_SIZE (256 * 1024 * 1024) | |
251 | struct btrfs_block_group_item { | |
252 | __le64 used; | |
253 | } __attribute__ ((__packed__)); | |
254 | ||
255 | struct btrfs_block_group_cache { | |
256 | struct btrfs_key key; | |
257 | struct btrfs_block_group_item item; | |
3e1ad54f | 258 | struct radix_tree_root *radix; |
cd1bc465 CM |
259 | u64 first_free; |
260 | u64 last_alloc; | |
be744175 CM |
261 | u64 pinned; |
262 | int data; | |
9078a3e1 CM |
263 | }; |
264 | ||
87cbda5c | 265 | struct crypto_hash; |
9f5fae2f | 266 | struct btrfs_fs_info { |
62e2749e CM |
267 | struct btrfs_root *extent_root; |
268 | struct btrfs_root *tree_root; | |
0bd93ba0 | 269 | struct btrfs_root *dev_root; |
0f7d52f4 | 270 | struct radix_tree_root fs_roots_radix; |
8ef97622 | 271 | struct radix_tree_root pending_del_radix; |
62e2749e | 272 | struct radix_tree_root pinned_radix; |
7eccb903 | 273 | struct radix_tree_root dev_radix; |
9078a3e1 | 274 | struct radix_tree_root block_group_radix; |
be744175 | 275 | struct radix_tree_root block_group_data_radix; |
f2458e1d CM |
276 | |
277 | u64 extent_tree_insert[BTRFS_MAX_LEVEL * 3]; | |
278 | int extent_tree_insert_nr; | |
279 | u64 extent_tree_prealloc[BTRFS_MAX_LEVEL * 3]; | |
280 | int extent_tree_prealloc_nr; | |
281 | ||
293ffd5f | 282 | u64 generation; |
79154b1b | 283 | struct btrfs_transaction *running_transaction; |
1261ec42 | 284 | struct btrfs_super_block *disk_super; |
e20d96d6 CM |
285 | struct buffer_head *sb_buffer; |
286 | struct super_block *sb; | |
d98237b3 | 287 | struct inode *btree_inode; |
79154b1b | 288 | struct mutex trans_mutex; |
d561c025 | 289 | struct mutex fs_mutex; |
8fd17795 | 290 | struct list_head trans_list; |
87cbda5c CM |
291 | struct crypto_hash *hash_tfm; |
292 | spinlock_t hash_lock; | |
e66f709b | 293 | int do_barriers; |
d6e4a428 | 294 | struct kobject kobj; |
9f5fae2f CM |
295 | }; |
296 | ||
297 | /* | |
298 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 299 | * and for the extent tree extent_root root. |
9f5fae2f CM |
300 | */ |
301 | struct btrfs_root { | |
e20d96d6 CM |
302 | struct buffer_head *node; |
303 | struct buffer_head *commit_root; | |
62e2749e CM |
304 | struct btrfs_root_item root_item; |
305 | struct btrfs_key root_key; | |
9f5fae2f | 306 | struct btrfs_fs_info *fs_info; |
0f7d52f4 CM |
307 | struct inode *inode; |
308 | u64 objectid; | |
309 | u64 last_trans; | |
62e2749e | 310 | u32 blocksize; |
9f5fae2f CM |
311 | int ref_cows; |
312 | u32 type; | |
1b05da2e CM |
313 | u64 highest_inode; |
314 | u64 last_inode_alloc; | |
62e2749e CM |
315 | }; |
316 | ||
62e2749e CM |
317 | /* the lower bits in the key flags defines the item type */ |
318 | #define BTRFS_KEY_TYPE_MAX 256 | |
a429e513 CM |
319 | #define BTRFS_KEY_TYPE_SHIFT 24 |
320 | #define BTRFS_KEY_TYPE_MASK (((u32)BTRFS_KEY_TYPE_MAX - 1) << \ | |
321 | BTRFS_KEY_TYPE_SHIFT) | |
1e1d2701 CM |
322 | |
323 | /* | |
324 | * inode items have the data typically returned from stat and store other | |
325 | * info about object characteristics. There is one for every file and dir in | |
326 | * the FS | |
327 | */ | |
9078a3e1 CM |
328 | #define BTRFS_INODE_ITEM_KEY 1 |
329 | ||
330 | /* reserve 2-15 close to the inode for later flexibility */ | |
1e1d2701 CM |
331 | |
332 | /* | |
333 | * dir items are the name -> inode pointers in a directory. There is one | |
334 | * for every name in a directory. | |
335 | */ | |
9078a3e1 CM |
336 | #define BTRFS_DIR_ITEM_KEY 16 |
337 | #define BTRFS_DIR_INDEX_KEY 17 | |
1e1d2701 | 338 | /* |
9078a3e1 | 339 | * extent data is for file data |
1e1d2701 | 340 | */ |
9078a3e1 | 341 | #define BTRFS_EXTENT_DATA_KEY 18 |
f254e52c CM |
342 | /* |
343 | * csum items have the checksums for data in the extents | |
344 | */ | |
9078a3e1 CM |
345 | #define BTRFS_CSUM_ITEM_KEY 19 |
346 | ||
347 | /* reserve 20-31 for other file stuff */ | |
f254e52c | 348 | |
1e1d2701 CM |
349 | /* |
350 | * root items point to tree roots. There are typically in the root | |
351 | * tree used by the super block to find all the other trees | |
352 | */ | |
9078a3e1 | 353 | #define BTRFS_ROOT_ITEM_KEY 32 |
1e1d2701 CM |
354 | /* |
355 | * extent items are in the extent map tree. These record which blocks | |
356 | * are used, and how many references there are to each block | |
357 | */ | |
9078a3e1 CM |
358 | #define BTRFS_EXTENT_ITEM_KEY 33 |
359 | ||
360 | /* | |
361 | * block groups give us hints into the extent allocation trees. Which | |
362 | * blocks are free etc etc | |
363 | */ | |
364 | #define BTRFS_BLOCK_GROUP_ITEM_KEY 34 | |
9f5fae2f | 365 | |
0bd93ba0 CM |
366 | /* |
367 | * dev items list the devices that make up the FS | |
368 | */ | |
9078a3e1 | 369 | #define BTRFS_DEV_ITEM_KEY 35 |
0bd93ba0 | 370 | |
1e1d2701 CM |
371 | /* |
372 | * string items are for debugging. They just store a short string of | |
373 | * data in the FS | |
374 | */ | |
9078a3e1 CM |
375 | #define BTRFS_STRING_ITEM_KEY 253 |
376 | ||
377 | ||
378 | static inline u64 btrfs_block_group_used(struct btrfs_block_group_item *bi) | |
379 | { | |
380 | return le64_to_cpu(bi->used); | |
381 | } | |
382 | ||
383 | static inline void btrfs_set_block_group_used(struct | |
384 | btrfs_block_group_item *bi, | |
385 | u64 val) | |
386 | { | |
387 | bi->used = cpu_to_le64(val); | |
388 | } | |
1e1d2701 CM |
389 | |
390 | static inline u64 btrfs_inode_generation(struct btrfs_inode_item *i) | |
391 | { | |
392 | return le64_to_cpu(i->generation); | |
393 | } | |
394 | ||
395 | static inline void btrfs_set_inode_generation(struct btrfs_inode_item *i, | |
396 | u64 val) | |
397 | { | |
398 | i->generation = cpu_to_le64(val); | |
399 | } | |
400 | ||
401 | static inline u64 btrfs_inode_size(struct btrfs_inode_item *i) | |
402 | { | |
403 | return le64_to_cpu(i->size); | |
404 | } | |
405 | ||
406 | static inline void btrfs_set_inode_size(struct btrfs_inode_item *i, u64 val) | |
407 | { | |
408 | i->size = cpu_to_le64(val); | |
409 | } | |
410 | ||
411 | static inline u64 btrfs_inode_nblocks(struct btrfs_inode_item *i) | |
412 | { | |
413 | return le64_to_cpu(i->nblocks); | |
414 | } | |
415 | ||
416 | static inline void btrfs_set_inode_nblocks(struct btrfs_inode_item *i, u64 val) | |
417 | { | |
418 | i->nblocks = cpu_to_le64(val); | |
419 | } | |
420 | ||
31f3c99b CM |
421 | static inline u64 btrfs_inode_block_group(struct btrfs_inode_item *i) |
422 | { | |
423 | return le64_to_cpu(i->block_group); | |
424 | } | |
425 | ||
426 | static inline void btrfs_set_inode_block_group(struct btrfs_inode_item *i, | |
427 | u64 val) | |
428 | { | |
429 | i->block_group = cpu_to_le64(val); | |
430 | } | |
431 | ||
1e1d2701 CM |
432 | static inline u32 btrfs_inode_nlink(struct btrfs_inode_item *i) |
433 | { | |
434 | return le32_to_cpu(i->nlink); | |
435 | } | |
436 | ||
437 | static inline void btrfs_set_inode_nlink(struct btrfs_inode_item *i, u32 val) | |
438 | { | |
439 | i->nlink = cpu_to_le32(val); | |
440 | } | |
441 | ||
442 | static inline u32 btrfs_inode_uid(struct btrfs_inode_item *i) | |
443 | { | |
444 | return le32_to_cpu(i->uid); | |
445 | } | |
446 | ||
447 | static inline void btrfs_set_inode_uid(struct btrfs_inode_item *i, u32 val) | |
448 | { | |
449 | i->uid = cpu_to_le32(val); | |
450 | } | |
451 | ||
452 | static inline u32 btrfs_inode_gid(struct btrfs_inode_item *i) | |
453 | { | |
454 | return le32_to_cpu(i->gid); | |
455 | } | |
456 | ||
457 | static inline void btrfs_set_inode_gid(struct btrfs_inode_item *i, u32 val) | |
458 | { | |
459 | i->gid = cpu_to_le32(val); | |
460 | } | |
461 | ||
462 | static inline u32 btrfs_inode_mode(struct btrfs_inode_item *i) | |
463 | { | |
464 | return le32_to_cpu(i->mode); | |
465 | } | |
466 | ||
467 | static inline void btrfs_set_inode_mode(struct btrfs_inode_item *i, u32 val) | |
468 | { | |
469 | i->mode = cpu_to_le32(val); | |
470 | } | |
471 | ||
472 | static inline u32 btrfs_inode_rdev(struct btrfs_inode_item *i) | |
473 | { | |
474 | return le32_to_cpu(i->rdev); | |
475 | } | |
476 | ||
477 | static inline void btrfs_set_inode_rdev(struct btrfs_inode_item *i, u32 val) | |
478 | { | |
479 | i->rdev = cpu_to_le32(val); | |
480 | } | |
481 | ||
482 | static inline u16 btrfs_inode_flags(struct btrfs_inode_item *i) | |
483 | { | |
484 | return le16_to_cpu(i->flags); | |
485 | } | |
486 | ||
487 | static inline void btrfs_set_inode_flags(struct btrfs_inode_item *i, u16 val) | |
488 | { | |
489 | i->flags = cpu_to_le16(val); | |
490 | } | |
491 | ||
492 | static inline u16 btrfs_inode_compat_flags(struct btrfs_inode_item *i) | |
493 | { | |
494 | return le16_to_cpu(i->compat_flags); | |
495 | } | |
496 | ||
497 | static inline void btrfs_set_inode_compat_flags(struct btrfs_inode_item *i, | |
498 | u16 val) | |
499 | { | |
500 | i->compat_flags = cpu_to_le16(val); | |
501 | } | |
502 | ||
f254e52c | 503 | static inline u64 btrfs_timespec_sec(struct btrfs_inode_timespec *ts) |
e20d96d6 | 504 | { |
f254e52c | 505 | return le64_to_cpu(ts->sec); |
e20d96d6 CM |
506 | } |
507 | ||
508 | static inline void btrfs_set_timespec_sec(struct btrfs_inode_timespec *ts, | |
f254e52c | 509 | u64 val) |
e20d96d6 | 510 | { |
f254e52c | 511 | ts->sec = cpu_to_le64(val); |
e20d96d6 CM |
512 | } |
513 | ||
514 | static inline u32 btrfs_timespec_nsec(struct btrfs_inode_timespec *ts) | |
515 | { | |
516 | return le32_to_cpu(ts->nsec); | |
517 | } | |
518 | ||
519 | static inline void btrfs_set_timespec_nsec(struct btrfs_inode_timespec *ts, | |
520 | u32 val) | |
521 | { | |
522 | ts->nsec = cpu_to_le32(val); | |
523 | } | |
524 | ||
234b63a0 | 525 | static inline u32 btrfs_extent_refs(struct btrfs_extent_item *ei) |
cf27e1ee CM |
526 | { |
527 | return le32_to_cpu(ei->refs); | |
528 | } | |
529 | ||
234b63a0 | 530 | static inline void btrfs_set_extent_refs(struct btrfs_extent_item *ei, u32 val) |
cf27e1ee CM |
531 | { |
532 | ei->refs = cpu_to_le32(val); | |
533 | } | |
534 | ||
4d775673 CM |
535 | static inline u64 btrfs_extent_owner(struct btrfs_extent_item *ei) |
536 | { | |
537 | return le64_to_cpu(ei->owner); | |
538 | } | |
539 | ||
540 | static inline void btrfs_set_extent_owner(struct btrfs_extent_item *ei, u64 val) | |
541 | { | |
542 | ei->owner = cpu_to_le64(val); | |
543 | } | |
544 | ||
234b63a0 | 545 | static inline u64 btrfs_node_blockptr(struct btrfs_node *n, int nr) |
1d4f8a0c | 546 | { |
123abc88 | 547 | return le64_to_cpu(n->ptrs[nr].blockptr); |
1d4f8a0c CM |
548 | } |
549 | ||
4d775673 | 550 | |
234b63a0 CM |
551 | static inline void btrfs_set_node_blockptr(struct btrfs_node *n, int nr, |
552 | u64 val) | |
1d4f8a0c | 553 | { |
123abc88 | 554 | n->ptrs[nr].blockptr = cpu_to_le64(val); |
1d4f8a0c CM |
555 | } |
556 | ||
123abc88 | 557 | static inline u32 btrfs_item_offset(struct btrfs_item *item) |
0783fcfc | 558 | { |
123abc88 | 559 | return le32_to_cpu(item->offset); |
0783fcfc CM |
560 | } |
561 | ||
123abc88 | 562 | static inline void btrfs_set_item_offset(struct btrfs_item *item, u32 val) |
0783fcfc | 563 | { |
123abc88 | 564 | item->offset = cpu_to_le32(val); |
0783fcfc CM |
565 | } |
566 | ||
123abc88 | 567 | static inline u32 btrfs_item_end(struct btrfs_item *item) |
0783fcfc | 568 | { |
123abc88 | 569 | return le32_to_cpu(item->offset) + le16_to_cpu(item->size); |
0783fcfc CM |
570 | } |
571 | ||
572 | static inline u16 btrfs_item_size(struct btrfs_item *item) | |
573 | { | |
574 | return le16_to_cpu(item->size); | |
575 | } | |
576 | ||
577 | static inline void btrfs_set_item_size(struct btrfs_item *item, u16 val) | |
578 | { | |
579 | item->size = cpu_to_le16(val); | |
580 | } | |
581 | ||
1d4f6404 CM |
582 | static inline u16 btrfs_dir_flags(struct btrfs_dir_item *d) |
583 | { | |
584 | return le16_to_cpu(d->flags); | |
585 | } | |
586 | ||
587 | static inline void btrfs_set_dir_flags(struct btrfs_dir_item *d, u16 val) | |
588 | { | |
589 | d->flags = cpu_to_le16(val); | |
590 | } | |
591 | ||
592 | static inline u8 btrfs_dir_type(struct btrfs_dir_item *d) | |
593 | { | |
594 | return d->type; | |
595 | } | |
596 | ||
597 | static inline void btrfs_set_dir_type(struct btrfs_dir_item *d, u8 val) | |
598 | { | |
599 | d->type = val; | |
600 | } | |
601 | ||
a8a2ee0c CM |
602 | static inline u16 btrfs_dir_name_len(struct btrfs_dir_item *d) |
603 | { | |
604 | return le16_to_cpu(d->name_len); | |
605 | } | |
606 | ||
607 | static inline void btrfs_set_dir_name_len(struct btrfs_dir_item *d, u16 val) | |
1d4f6404 | 608 | { |
a8a2ee0c | 609 | d->name_len = cpu_to_le16(val); |
1d4f6404 CM |
610 | } |
611 | ||
e2fa7227 CM |
612 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
613 | struct btrfs_disk_key *disk) | |
614 | { | |
615 | cpu->offset = le64_to_cpu(disk->offset); | |
616 | cpu->flags = le32_to_cpu(disk->flags); | |
617 | cpu->objectid = le64_to_cpu(disk->objectid); | |
618 | } | |
619 | ||
620 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
621 | struct btrfs_key *cpu) | |
622 | { | |
623 | disk->offset = cpu_to_le64(cpu->offset); | |
624 | disk->flags = cpu_to_le32(cpu->flags); | |
625 | disk->objectid = cpu_to_le64(cpu->objectid); | |
626 | } | |
627 | ||
62e2749e | 628 | static inline u64 btrfs_disk_key_objectid(struct btrfs_disk_key *disk) |
e2fa7227 CM |
629 | { |
630 | return le64_to_cpu(disk->objectid); | |
631 | } | |
632 | ||
62e2749e CM |
633 | static inline void btrfs_set_disk_key_objectid(struct btrfs_disk_key *disk, |
634 | u64 val) | |
e2fa7227 CM |
635 | { |
636 | disk->objectid = cpu_to_le64(val); | |
637 | } | |
638 | ||
62e2749e | 639 | static inline u64 btrfs_disk_key_offset(struct btrfs_disk_key *disk) |
e2fa7227 CM |
640 | { |
641 | return le64_to_cpu(disk->offset); | |
642 | } | |
643 | ||
62e2749e CM |
644 | static inline void btrfs_set_disk_key_offset(struct btrfs_disk_key *disk, |
645 | u64 val) | |
e2fa7227 CM |
646 | { |
647 | disk->offset = cpu_to_le64(val); | |
648 | } | |
649 | ||
62e2749e | 650 | static inline u32 btrfs_disk_key_flags(struct btrfs_disk_key *disk) |
e2fa7227 CM |
651 | { |
652 | return le32_to_cpu(disk->flags); | |
653 | } | |
654 | ||
62e2749e CM |
655 | static inline void btrfs_set_disk_key_flags(struct btrfs_disk_key *disk, |
656 | u32 val) | |
e2fa7227 CM |
657 | { |
658 | disk->flags = cpu_to_le32(val); | |
659 | } | |
660 | ||
a429e513 | 661 | static inline u32 btrfs_disk_key_type(struct btrfs_disk_key *key) |
7fcde0e3 | 662 | { |
a429e513 | 663 | return le32_to_cpu(key->flags) >> BTRFS_KEY_TYPE_SHIFT; |
7fcde0e3 CM |
664 | } |
665 | ||
a429e513 CM |
666 | static inline void btrfs_set_disk_key_type(struct btrfs_disk_key *key, |
667 | u32 val) | |
7fcde0e3 | 668 | { |
a429e513 CM |
669 | u32 flags = btrfs_disk_key_flags(key); |
670 | BUG_ON(val >= BTRFS_KEY_TYPE_MAX); | |
671 | val = val << BTRFS_KEY_TYPE_SHIFT; | |
672 | flags = (flags & ~BTRFS_KEY_TYPE_MASK) | val; | |
673 | btrfs_set_disk_key_flags(key, flags); | |
7fcde0e3 CM |
674 | } |
675 | ||
62e2749e CM |
676 | static inline u32 btrfs_key_type(struct btrfs_key *key) |
677 | { | |
a429e513 | 678 | return key->flags >> BTRFS_KEY_TYPE_SHIFT; |
62e2749e CM |
679 | } |
680 | ||
a429e513 | 681 | static inline void btrfs_set_key_type(struct btrfs_key *key, u32 val) |
62e2749e | 682 | { |
a429e513 CM |
683 | BUG_ON(val >= BTRFS_KEY_TYPE_MAX); |
684 | val = val << BTRFS_KEY_TYPE_SHIFT; | |
685 | key->flags = (key->flags & ~(BTRFS_KEY_TYPE_MASK)) | val; | |
62e2749e CM |
686 | } |
687 | ||
bb492bb0 | 688 | static inline u64 btrfs_header_blocknr(struct btrfs_header *h) |
7518a238 | 689 | { |
bb492bb0 | 690 | return le64_to_cpu(h->blocknr); |
7518a238 CM |
691 | } |
692 | ||
bb492bb0 | 693 | static inline void btrfs_set_header_blocknr(struct btrfs_header *h, u64 blocknr) |
7518a238 | 694 | { |
bb492bb0 | 695 | h->blocknr = cpu_to_le64(blocknr); |
7518a238 CM |
696 | } |
697 | ||
7f5c1516 CM |
698 | static inline u64 btrfs_header_generation(struct btrfs_header *h) |
699 | { | |
700 | return le64_to_cpu(h->generation); | |
701 | } | |
702 | ||
703 | static inline void btrfs_set_header_generation(struct btrfs_header *h, | |
704 | u64 val) | |
705 | { | |
706 | h->generation = cpu_to_le64(val); | |
707 | } | |
708 | ||
4d775673 CM |
709 | static inline u64 btrfs_header_owner(struct btrfs_header *h) |
710 | { | |
711 | return le64_to_cpu(h->owner); | |
712 | } | |
713 | ||
714 | static inline void btrfs_set_header_owner(struct btrfs_header *h, | |
715 | u64 val) | |
716 | { | |
717 | h->owner = cpu_to_le64(val); | |
718 | } | |
719 | ||
bb492bb0 | 720 | static inline u16 btrfs_header_nritems(struct btrfs_header *h) |
7518a238 | 721 | { |
bb492bb0 | 722 | return le16_to_cpu(h->nritems); |
7518a238 CM |
723 | } |
724 | ||
bb492bb0 | 725 | static inline void btrfs_set_header_nritems(struct btrfs_header *h, u16 val) |
7518a238 | 726 | { |
bb492bb0 | 727 | h->nritems = cpu_to_le16(val); |
7518a238 CM |
728 | } |
729 | ||
bb492bb0 | 730 | static inline u16 btrfs_header_flags(struct btrfs_header *h) |
7518a238 | 731 | { |
bb492bb0 | 732 | return le16_to_cpu(h->flags); |
7518a238 CM |
733 | } |
734 | ||
bb492bb0 | 735 | static inline void btrfs_set_header_flags(struct btrfs_header *h, u16 val) |
7518a238 | 736 | { |
bb492bb0 | 737 | h->flags = cpu_to_le16(val); |
7518a238 CM |
738 | } |
739 | ||
bb492bb0 | 740 | static inline int btrfs_header_level(struct btrfs_header *h) |
7518a238 | 741 | { |
9a6f11ed | 742 | return h->level; |
7518a238 CM |
743 | } |
744 | ||
bb492bb0 | 745 | static inline void btrfs_set_header_level(struct btrfs_header *h, int level) |
7518a238 | 746 | { |
234b63a0 | 747 | BUG_ON(level > BTRFS_MAX_LEVEL); |
9a6f11ed | 748 | h->level = level; |
7518a238 CM |
749 | } |
750 | ||
234b63a0 | 751 | static inline int btrfs_is_leaf(struct btrfs_node *n) |
7518a238 CM |
752 | { |
753 | return (btrfs_header_level(&n->header) == 0); | |
754 | } | |
755 | ||
3768f368 CM |
756 | static inline u64 btrfs_root_blocknr(struct btrfs_root_item *item) |
757 | { | |
758 | return le64_to_cpu(item->blocknr); | |
759 | } | |
760 | ||
761 | static inline void btrfs_set_root_blocknr(struct btrfs_root_item *item, u64 val) | |
762 | { | |
763 | item->blocknr = cpu_to_le64(val); | |
764 | } | |
765 | ||
d6e4a428 CM |
766 | static inline u64 btrfs_root_dirid(struct btrfs_root_item *item) |
767 | { | |
768 | return le64_to_cpu(item->root_dirid); | |
769 | } | |
770 | ||
771 | static inline void btrfs_set_root_dirid(struct btrfs_root_item *item, u64 val) | |
772 | { | |
773 | item->root_dirid = cpu_to_le64(val); | |
774 | } | |
775 | ||
3768f368 CM |
776 | static inline u32 btrfs_root_refs(struct btrfs_root_item *item) |
777 | { | |
778 | return le32_to_cpu(item->refs); | |
779 | } | |
780 | ||
781 | static inline void btrfs_set_root_refs(struct btrfs_root_item *item, u32 val) | |
782 | { | |
783 | item->refs = cpu_to_le32(val); | |
784 | } | |
785 | ||
786 | static inline u64 btrfs_super_blocknr(struct btrfs_super_block *s) | |
787 | { | |
788 | return le64_to_cpu(s->blocknr); | |
789 | } | |
790 | ||
791 | static inline void btrfs_set_super_blocknr(struct btrfs_super_block *s, u64 val) | |
792 | { | |
793 | s->blocknr = cpu_to_le64(val); | |
794 | } | |
795 | ||
0f7d52f4 CM |
796 | static inline u64 btrfs_super_generation(struct btrfs_super_block *s) |
797 | { | |
798 | return le64_to_cpu(s->generation); | |
799 | } | |
800 | ||
801 | static inline void btrfs_set_super_generation(struct btrfs_super_block *s, | |
802 | u64 val) | |
803 | { | |
804 | s->generation = cpu_to_le64(val); | |
805 | } | |
806 | ||
3768f368 CM |
807 | static inline u64 btrfs_super_root(struct btrfs_super_block *s) |
808 | { | |
809 | return le64_to_cpu(s->root); | |
810 | } | |
811 | ||
812 | static inline void btrfs_set_super_root(struct btrfs_super_block *s, u64 val) | |
813 | { | |
814 | s->root = cpu_to_le64(val); | |
815 | } | |
816 | ||
817 | static inline u64 btrfs_super_total_blocks(struct btrfs_super_block *s) | |
818 | { | |
819 | return le64_to_cpu(s->total_blocks); | |
820 | } | |
821 | ||
822 | static inline void btrfs_set_super_total_blocks(struct btrfs_super_block *s, | |
823 | u64 val) | |
824 | { | |
825 | s->total_blocks = cpu_to_le64(val); | |
826 | } | |
827 | ||
828 | static inline u64 btrfs_super_blocks_used(struct btrfs_super_block *s) | |
829 | { | |
830 | return le64_to_cpu(s->blocks_used); | |
831 | } | |
832 | ||
833 | static inline void btrfs_set_super_blocks_used(struct btrfs_super_block *s, | |
834 | u64 val) | |
835 | { | |
836 | s->blocks_used = cpu_to_le64(val); | |
837 | } | |
838 | ||
123abc88 | 839 | static inline u32 btrfs_super_blocksize(struct btrfs_super_block *s) |
3768f368 | 840 | { |
123abc88 | 841 | return le32_to_cpu(s->blocksize); |
3768f368 CM |
842 | } |
843 | ||
844 | static inline void btrfs_set_super_blocksize(struct btrfs_super_block *s, | |
123abc88 CM |
845 | u32 val) |
846 | { | |
847 | s->blocksize = cpu_to_le32(val); | |
848 | } | |
849 | ||
2e635a27 CM |
850 | static inline u64 btrfs_super_root_dir(struct btrfs_super_block *s) |
851 | { | |
852 | return le64_to_cpu(s->root_dir_objectid); | |
853 | } | |
854 | ||
855 | static inline void btrfs_set_super_root_dir(struct btrfs_super_block *s, u64 | |
856 | val) | |
857 | { | |
858 | s->root_dir_objectid = cpu_to_le64(val); | |
859 | } | |
860 | ||
b4100d64 CM |
861 | static inline u64 btrfs_super_last_device_id(struct btrfs_super_block *s) |
862 | { | |
863 | return le64_to_cpu(s->last_device_id); | |
864 | } | |
865 | ||
866 | static inline void btrfs_set_super_last_device_id(struct btrfs_super_block *s, | |
867 | u64 val) | |
868 | { | |
869 | s->last_device_id = cpu_to_le64(val); | |
870 | } | |
871 | ||
872 | static inline u64 btrfs_super_device_id(struct btrfs_super_block *s) | |
873 | { | |
874 | return le64_to_cpu(s->device_id); | |
875 | } | |
876 | ||
877 | static inline void btrfs_set_super_device_id(struct btrfs_super_block *s, | |
878 | u64 val) | |
879 | { | |
880 | s->device_id = cpu_to_le64(val); | |
881 | } | |
882 | ||
0bd93ba0 CM |
883 | static inline u64 btrfs_super_device_block_start(struct btrfs_super_block *s) |
884 | { | |
885 | return le64_to_cpu(s->device_block_start); | |
886 | } | |
887 | ||
888 | static inline void btrfs_set_super_device_block_start(struct btrfs_super_block | |
889 | *s, u64 val) | |
890 | { | |
891 | s->device_block_start = cpu_to_le64(val); | |
892 | } | |
893 | ||
894 | static inline u64 btrfs_super_device_num_blocks(struct btrfs_super_block *s) | |
895 | { | |
896 | return le64_to_cpu(s->device_num_blocks); | |
897 | } | |
898 | ||
899 | static inline void btrfs_set_super_device_num_blocks(struct btrfs_super_block | |
900 | *s, u64 val) | |
901 | { | |
902 | s->device_num_blocks = cpu_to_le64(val); | |
903 | } | |
904 | ||
905 | static inline u64 btrfs_super_device_root(struct btrfs_super_block *s) | |
906 | { | |
907 | return le64_to_cpu(s->device_root); | |
908 | } | |
909 | ||
910 | static inline void btrfs_set_super_device_root(struct btrfs_super_block | |
911 | *s, u64 val) | |
912 | { | |
913 | s->device_root = cpu_to_le64(val); | |
914 | } | |
915 | ||
916 | ||
123abc88 | 917 | static inline u8 *btrfs_leaf_data(struct btrfs_leaf *l) |
3768f368 | 918 | { |
123abc88 | 919 | return (u8 *)l->items; |
3768f368 | 920 | } |
9f5fae2f | 921 | |
236454df CM |
922 | static inline int btrfs_file_extent_type(struct btrfs_file_extent_item *e) |
923 | { | |
924 | return e->type; | |
925 | } | |
926 | static inline void btrfs_set_file_extent_type(struct btrfs_file_extent_item *e, | |
927 | u8 val) | |
928 | { | |
929 | e->type = val; | |
930 | } | |
931 | ||
932 | static inline char *btrfs_file_extent_inline_start(struct | |
933 | btrfs_file_extent_item *e) | |
934 | { | |
935 | return (char *)(&e->disk_blocknr); | |
936 | } | |
937 | ||
938 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
939 | { | |
940 | return (unsigned long)(&((struct | |
941 | btrfs_file_extent_item *)NULL)->disk_blocknr) + datasize; | |
942 | } | |
943 | ||
944 | static inline u32 btrfs_file_extent_inline_len(struct btrfs_item *e) | |
945 | { | |
946 | struct btrfs_file_extent_item *fe = NULL; | |
947 | return btrfs_item_size(e) - (unsigned long)(&fe->disk_blocknr); | |
948 | } | |
949 | ||
9f5fae2f CM |
950 | static inline u64 btrfs_file_extent_disk_blocknr(struct btrfs_file_extent_item |
951 | *e) | |
952 | { | |
953 | return le64_to_cpu(e->disk_blocknr); | |
954 | } | |
955 | ||
956 | static inline void btrfs_set_file_extent_disk_blocknr(struct | |
957 | btrfs_file_extent_item | |
958 | *e, u64 val) | |
959 | { | |
960 | e->disk_blocknr = cpu_to_le64(val); | |
961 | } | |
962 | ||
71951f35 CM |
963 | static inline u64 btrfs_file_extent_generation(struct btrfs_file_extent_item *e) |
964 | { | |
965 | return le64_to_cpu(e->generation); | |
966 | } | |
967 | ||
968 | static inline void btrfs_set_file_extent_generation(struct | |
969 | btrfs_file_extent_item *e, | |
970 | u64 val) | |
971 | { | |
972 | e->generation = cpu_to_le64(val); | |
973 | } | |
974 | ||
9f5fae2f CM |
975 | static inline u64 btrfs_file_extent_disk_num_blocks(struct |
976 | btrfs_file_extent_item *e) | |
977 | { | |
978 | return le64_to_cpu(e->disk_num_blocks); | |
979 | } | |
980 | ||
981 | static inline void btrfs_set_file_extent_disk_num_blocks(struct | |
982 | btrfs_file_extent_item | |
983 | *e, u64 val) | |
984 | { | |
985 | e->disk_num_blocks = cpu_to_le64(val); | |
986 | } | |
987 | ||
988 | static inline u64 btrfs_file_extent_offset(struct btrfs_file_extent_item *e) | |
989 | { | |
990 | return le64_to_cpu(e->offset); | |
991 | } | |
992 | ||
993 | static inline void btrfs_set_file_extent_offset(struct btrfs_file_extent_item | |
994 | *e, u64 val) | |
995 | { | |
996 | e->offset = cpu_to_le64(val); | |
997 | } | |
998 | ||
999 | static inline u64 btrfs_file_extent_num_blocks(struct btrfs_file_extent_item | |
1000 | *e) | |
1001 | { | |
1002 | return le64_to_cpu(e->num_blocks); | |
1003 | } | |
1004 | ||
1005 | static inline void btrfs_set_file_extent_num_blocks(struct | |
1006 | btrfs_file_extent_item *e, | |
1007 | u64 val) | |
1008 | { | |
1009 | e->num_blocks = cpu_to_le64(val); | |
1010 | } | |
1011 | ||
0bd93ba0 CM |
1012 | static inline u16 btrfs_device_pathlen(struct btrfs_device_item *d) |
1013 | { | |
1014 | return le16_to_cpu(d->pathlen); | |
1015 | } | |
1016 | ||
1017 | static inline void btrfs_set_device_pathlen(struct btrfs_device_item *d, | |
1018 | u16 val) | |
1019 | { | |
1020 | d->pathlen = cpu_to_le16(val); | |
1021 | } | |
1022 | ||
b4100d64 CM |
1023 | static inline u64 btrfs_device_id(struct btrfs_device_item *d) |
1024 | { | |
1025 | return le64_to_cpu(d->device_id); | |
1026 | } | |
1027 | ||
1028 | static inline void btrfs_set_device_id(struct btrfs_device_item *d, | |
1029 | u64 val) | |
1030 | { | |
1031 | d->device_id = cpu_to_le64(val); | |
1032 | } | |
1033 | ||
e20d96d6 CM |
1034 | static inline struct btrfs_root *btrfs_sb(struct super_block *sb) |
1035 | { | |
1036 | return sb->s_fs_info; | |
1037 | } | |
1038 | ||
d6025579 CM |
1039 | static inline void btrfs_check_bounds(void *vptr, size_t len, |
1040 | void *vcontainer, size_t container_len) | |
1041 | { | |
1042 | char *ptr = vptr; | |
1043 | char *container = vcontainer; | |
1044 | WARN_ON(ptr < container); | |
1045 | WARN_ON(ptr + len > container + container_len); | |
1046 | } | |
1047 | ||
1048 | static inline void btrfs_memcpy(struct btrfs_root *root, | |
1049 | void *dst_block, | |
1050 | void *dst, const void *src, size_t nr) | |
1051 | { | |
1052 | btrfs_check_bounds(dst, nr, dst_block, root->fs_info->sb->s_blocksize); | |
1053 | memcpy(dst, src, nr); | |
1054 | } | |
1055 | ||
1056 | static inline void btrfs_memmove(struct btrfs_root *root, | |
1057 | void *dst_block, | |
1058 | void *dst, void *src, size_t nr) | |
1059 | { | |
1060 | btrfs_check_bounds(dst, nr, dst_block, root->fs_info->sb->s_blocksize); | |
1061 | memmove(dst, src, nr); | |
1062 | } | |
1063 | ||
1064 | static inline void btrfs_mark_buffer_dirty(struct buffer_head *bh) | |
1065 | { | |
1066 | WARN_ON(!atomic_read(&bh->b_count)); | |
1067 | mark_buffer_dirty(bh); | |
1068 | } | |
1069 | ||
4beb1b8b CM |
1070 | /* helper function to cast into the data area of the leaf. */ |
1071 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 CM |
1072 | ((type *)(btrfs_leaf_data(leaf) + \ |
1073 | btrfs_item_offset((leaf)->items + (slot)))) | |
4beb1b8b | 1074 | |
b18c6685 | 1075 | /* extent-tree.c */ |
31f3c99b CM |
1076 | struct btrfs_block_group_cache *btrfs_find_block_group(struct btrfs_root *root, |
1077 | struct btrfs_block_group_cache | |
be744175 CM |
1078 | *hint, u64 search_start, |
1079 | int data); | |
c5739bba CM |
1080 | int btrfs_inc_root_ref(struct btrfs_trans_handle *trans, |
1081 | struct btrfs_root *root); | |
e20d96d6 | 1082 | struct buffer_head *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
31f3c99b | 1083 | struct btrfs_root *root, u64 hint); |
4d775673 CM |
1084 | int btrfs_alloc_extent(struct btrfs_trans_handle *trans, |
1085 | struct btrfs_root *root, u64 owner, | |
c62a1920 | 1086 | u64 num_blocks, u64 search_start, |
be08c1b9 | 1087 | u64 search_end, struct btrfs_key *ins, int data); |
e089f05c | 1088 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e20d96d6 | 1089 | struct buffer_head *buf); |
e089f05c CM |
1090 | int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root |
1091 | *root, u64 blocknr, u64 num_blocks, int pin); | |
dee26a9f CM |
1092 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, struct |
1093 | btrfs_root *root); | |
b18c6685 CM |
1094 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
1095 | struct btrfs_root *root, | |
1096 | u64 blocknr, u64 num_blocks); | |
9078a3e1 CM |
1097 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
1098 | struct btrfs_root *root); | |
1099 | int btrfs_free_block_groups(struct btrfs_fs_info *info); | |
1100 | int btrfs_read_block_groups(struct btrfs_root *root); | |
dee26a9f | 1101 | /* ctree.c */ |
6567e837 CM |
1102 | int btrfs_extend_item(struct btrfs_trans_handle *trans, struct btrfs_root |
1103 | *root, struct btrfs_path *path, u32 data_size); | |
b18c6685 CM |
1104 | int btrfs_truncate_item(struct btrfs_trans_handle *trans, |
1105 | struct btrfs_root *root, | |
1106 | struct btrfs_path *path, | |
1107 | u32 new_size); | |
e089f05c CM |
1108 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
1109 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
1110 | ins_len, int cow); | |
234b63a0 | 1111 | void btrfs_release_path(struct btrfs_root *root, struct btrfs_path *p); |
2c90e5d6 CM |
1112 | struct btrfs_path *btrfs_alloc_path(void); |
1113 | void btrfs_free_path(struct btrfs_path *p); | |
234b63a0 | 1114 | void btrfs_init_path(struct btrfs_path *p); |
e089f05c CM |
1115 | int btrfs_del_item(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1116 | struct btrfs_path *path); | |
1117 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root | |
1118 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
1119 | int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, struct btrfs_root | |
1120 | *root, struct btrfs_path *path, struct btrfs_key | |
1121 | *cpu_key, u32 data_size); | |
234b63a0 | 1122 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
123abc88 | 1123 | int btrfs_leaf_free_space(struct btrfs_root *root, struct btrfs_leaf *leaf); |
e089f05c | 1124 | int btrfs_drop_snapshot(struct btrfs_trans_handle *trans, struct btrfs_root |
e20d96d6 | 1125 | *root, struct buffer_head *snap); |
dee26a9f | 1126 | /* root-item.c */ |
e089f05c CM |
1127 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1128 | struct btrfs_key *key); | |
1129 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1130 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1131 | *item); | |
1132 | int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1133 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1134 | *item); | |
1135 | int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct | |
1136 | btrfs_root_item *item, struct btrfs_key *key); | |
dee26a9f | 1137 | /* dir-item.c */ |
e089f05c | 1138 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
1139 | *root, const char *name, int name_len, u64 dir, |
1140 | struct btrfs_key *location, u8 type); | |
7e38180e CM |
1141 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
1142 | struct btrfs_root *root, | |
1143 | struct btrfs_path *path, u64 dir, | |
1144 | const char *name, int name_len, | |
1145 | int mod); | |
1146 | struct btrfs_dir_item * | |
1147 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
1148 | struct btrfs_root *root, | |
1149 | struct btrfs_path *path, u64 dir, | |
1150 | u64 objectid, const char *name, int name_len, | |
1151 | int mod); | |
1152 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, | |
1153 | struct btrfs_path *path, | |
7f5c1516 | 1154 | const char *name, int name_len); |
7e38180e CM |
1155 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
1156 | struct btrfs_root *root, | |
1157 | struct btrfs_path *path, | |
1158 | struct btrfs_dir_item *di); | |
dee26a9f | 1159 | /* inode-map.c */ |
9f5fae2f CM |
1160 | int btrfs_find_free_objectid(struct btrfs_trans_handle *trans, |
1161 | struct btrfs_root *fs_root, | |
1162 | u64 dirid, u64 *objectid); | |
5be6f7f1 CM |
1163 | int btrfs_find_highest_inode(struct btrfs_root *fs_root, u64 *objectid); |
1164 | ||
dee26a9f | 1165 | /* inode-item.c */ |
293ffd5f CM |
1166 | int btrfs_insert_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
1167 | *root, u64 objectid, struct btrfs_inode_item | |
1168 | *inode_item); | |
1169 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root | |
d6e4a428 CM |
1170 | *root, struct btrfs_path *path, |
1171 | struct btrfs_key *location, int mod); | |
dee26a9f CM |
1172 | |
1173 | /* file-item.c */ | |
b18c6685 | 1174 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
dee26a9f | 1175 | struct btrfs_root *root, |
b18c6685 CM |
1176 | u64 objectid, u64 pos, u64 offset, |
1177 | u64 num_blocks); | |
dee26a9f CM |
1178 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
1179 | struct btrfs_root *root, | |
1180 | struct btrfs_path *path, u64 objectid, | |
9773a788 | 1181 | u64 blocknr, int mod); |
f254e52c CM |
1182 | int btrfs_csum_file_block(struct btrfs_trans_handle *trans, |
1183 | struct btrfs_root *root, | |
1184 | u64 objectid, u64 offset, | |
1185 | char *data, size_t len); | |
1186 | int btrfs_csum_verify_file_block(struct btrfs_root *root, | |
1187 | u64 objectid, u64 offset, | |
1188 | char *data, size_t len); | |
b18c6685 CM |
1189 | struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans, |
1190 | struct btrfs_root *root, | |
1191 | struct btrfs_path *path, | |
1192 | u64 objectid, u64 offset, | |
1193 | int cow); | |
d6e4a428 CM |
1194 | /* super.c */ |
1195 | extern struct subsystem btrfs_subsys; | |
1196 | ||
eb60ceac | 1197 | #endif |