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; |
2c90e5d6 | 11 | extern struct kmem_cache *btrfs_path_cachep; |
e089f05c | 12 | |
3768f368 | 13 | #define BTRFS_MAGIC "_BtRfS_M" |
eb60ceac | 14 | |
6407bf6d | 15 | #define BTRFS_ROOT_TREE_OBJECTID 1ULL |
0bd93ba0 CM |
16 | #define BTRFS_DEV_TREE_OBJECTID 2ULL |
17 | #define BTRFS_EXTENT_TREE_OBJECTID 3ULL | |
18 | #define BTRFS_FS_TREE_OBJECTID 4ULL | |
19 | #define BTRFS_ROOT_TREE_DIR_OBJECTID 5ULL | |
20 | #define BTRFS_FIRST_FREE_OBJECTID 6ULL | |
3768f368 | 21 | |
e20d96d6 CM |
22 | /* |
23 | * we can actually store much bigger names, but lets not confuse the rest | |
24 | * of linux | |
25 | */ | |
26 | #define BTRFS_NAME_LEN 255 | |
27 | ||
f254e52c CM |
28 | /* 32 bytes in various csum fields */ |
29 | #define BTRFS_CSUM_SIZE 32 | |
30 | ||
fec577fb CM |
31 | /* |
32 | * the key defines the order in the tree, and so it also defines (optimal) | |
33 | * block layout. objectid corresonds to the inode number. The flags | |
34 | * tells us things about the object, and is a kind of stream selector. | |
35 | * so for a given inode, keys with flags of 1 might refer to the inode | |
36 | * data, flags of 2 may point to file data in the btree and flags == 3 | |
37 | * may point to extents. | |
38 | * | |
39 | * offset is the starting byte offset for this key in the stream. | |
e2fa7227 CM |
40 | * |
41 | * btrfs_disk_key is in disk byte order. struct btrfs_key is always | |
42 | * in cpu native order. Otherwise they are identical and their sizes | |
43 | * should be the same (ie both packed) | |
fec577fb | 44 | */ |
e2fa7227 CM |
45 | struct btrfs_disk_key { |
46 | __le64 objectid; | |
f254e52c | 47 | __le32 flags; |
70b2befd | 48 | __le64 offset; |
e2fa7227 CM |
49 | } __attribute__ ((__packed__)); |
50 | ||
51 | struct btrfs_key { | |
eb60ceac | 52 | u64 objectid; |
f254e52c | 53 | u32 flags; |
70b2befd | 54 | u64 offset; |
eb60ceac CM |
55 | } __attribute__ ((__packed__)); |
56 | ||
fec577fb CM |
57 | /* |
58 | * every tree block (leaf or node) starts with this header. | |
59 | */ | |
bb492bb0 | 60 | struct btrfs_header { |
f254e52c | 61 | u8 csum[BTRFS_CSUM_SIZE]; |
3768f368 | 62 | u8 fsid[16]; /* FS specific uuid */ |
bb492bb0 | 63 | __le64 blocknr; /* which block this node is supposed to live in */ |
7f5c1516 | 64 | __le64 generation; |
4d775673 | 65 | __le64 owner; |
bb492bb0 CM |
66 | __le16 nritems; |
67 | __le16 flags; | |
9a6f11ed | 68 | u8 level; |
eb60ceac CM |
69 | } __attribute__ ((__packed__)); |
70 | ||
234b63a0 | 71 | #define BTRFS_MAX_LEVEL 8 |
123abc88 CM |
72 | #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->blocksize - \ |
73 | sizeof(struct btrfs_header)) / \ | |
74 | (sizeof(struct btrfs_disk_key) + sizeof(u64))) | |
75 | #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header)) | |
76 | #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->blocksize)) | |
236454df CM |
77 | #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
78 | sizeof(struct btrfs_item) - \ | |
79 | sizeof(struct btrfs_file_extent_item)) | |
eb60ceac | 80 | |
e20d96d6 | 81 | struct buffer_head; |
fec577fb CM |
82 | /* |
83 | * the super block basically lists the main trees of the FS | |
84 | * it currently lacks any block count etc etc | |
85 | */ | |
234b63a0 | 86 | struct btrfs_super_block { |
f254e52c | 87 | u8 csum[BTRFS_CSUM_SIZE]; |
87cbda5c | 88 | /* the first 3 fields must match struct btrfs_header */ |
3768f368 CM |
89 | u8 fsid[16]; /* FS specific uuid */ |
90 | __le64 blocknr; /* this block number */ | |
3768f368 | 91 | __le64 magic; |
123abc88 | 92 | __le32 blocksize; |
3768f368 CM |
93 | __le64 generation; |
94 | __le64 root; | |
95 | __le64 total_blocks; | |
96 | __le64 blocks_used; | |
2e635a27 | 97 | __le64 root_dir_objectid; |
b4100d64 | 98 | __le64 last_device_id; |
0bd93ba0 CM |
99 | /* fields below here vary with the underlying disk */ |
100 | __le64 device_block_start; | |
101 | __le64 device_num_blocks; | |
102 | __le64 device_root; | |
b4100d64 | 103 | __le64 device_id; |
cfaa7295 CM |
104 | } __attribute__ ((__packed__)); |
105 | ||
fec577fb | 106 | /* |
62e2749e | 107 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
108 | * the item in the leaf (relative to the start of the data area) |
109 | */ | |
0783fcfc | 110 | struct btrfs_item { |
e2fa7227 | 111 | struct btrfs_disk_key key; |
123abc88 | 112 | __le32 offset; |
0783fcfc | 113 | __le16 size; |
eb60ceac CM |
114 | } __attribute__ ((__packed__)); |
115 | ||
fec577fb CM |
116 | /* |
117 | * leaves have an item area and a data area: | |
118 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
119 | * | |
120 | * The data is separate from the items to get the keys closer together | |
121 | * during searches. | |
122 | */ | |
234b63a0 | 123 | struct btrfs_leaf { |
bb492bb0 | 124 | struct btrfs_header header; |
123abc88 | 125 | struct btrfs_item items[]; |
eb60ceac CM |
126 | } __attribute__ ((__packed__)); |
127 | ||
fec577fb CM |
128 | /* |
129 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
130 | * other blocks | |
131 | */ | |
123abc88 CM |
132 | struct btrfs_key_ptr { |
133 | struct btrfs_disk_key key; | |
134 | __le64 blockptr; | |
135 | } __attribute__ ((__packed__)); | |
136 | ||
234b63a0 | 137 | struct btrfs_node { |
bb492bb0 | 138 | struct btrfs_header header; |
123abc88 | 139 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
140 | } __attribute__ ((__packed__)); |
141 | ||
fec577fb | 142 | /* |
234b63a0 CM |
143 | * btrfs_paths remember the path taken from the root down to the leaf. |
144 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
145 | * to any other levels that are present. |
146 | * | |
147 | * The slots array records the index of the item or block pointer | |
148 | * used while walking the tree. | |
149 | */ | |
234b63a0 | 150 | struct btrfs_path { |
e20d96d6 | 151 | struct buffer_head *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 152 | int slots[BTRFS_MAX_LEVEL]; |
eb60ceac | 153 | }; |
5de08d7d | 154 | |
62e2749e CM |
155 | /* |
156 | * items in the extent btree are used to record the objectid of the | |
157 | * owner of the block and the number of references | |
158 | */ | |
159 | struct btrfs_extent_item { | |
160 | __le32 refs; | |
4d775673 | 161 | __le64 owner; |
62e2749e CM |
162 | } __attribute__ ((__packed__)); |
163 | ||
1e1d2701 | 164 | struct btrfs_inode_timespec { |
f254e52c | 165 | __le64 sec; |
1e1d2701 CM |
166 | __le32 nsec; |
167 | } __attribute__ ((__packed__)); | |
168 | ||
169 | /* | |
170 | * there is no padding here on purpose. If you want to extent the inode, | |
171 | * make a new item type | |
172 | */ | |
173 | struct btrfs_inode_item { | |
174 | __le64 generation; | |
175 | __le64 size; | |
176 | __le64 nblocks; | |
177 | __le32 nlink; | |
178 | __le32 uid; | |
179 | __le32 gid; | |
180 | __le32 mode; | |
181 | __le32 rdev; | |
182 | __le16 flags; | |
183 | __le16 compat_flags; | |
184 | struct btrfs_inode_timespec atime; | |
185 | struct btrfs_inode_timespec ctime; | |
186 | struct btrfs_inode_timespec mtime; | |
187 | struct btrfs_inode_timespec otime; | |
188 | } __attribute__ ((__packed__)); | |
189 | ||
62e2749e | 190 | struct btrfs_dir_item { |
d6e4a428 | 191 | struct btrfs_disk_key location; |
62e2749e | 192 | __le16 flags; |
a8a2ee0c | 193 | __le16 name_len; |
62e2749e CM |
194 | u8 type; |
195 | } __attribute__ ((__packed__)); | |
196 | ||
197 | struct btrfs_root_item { | |
d6e4a428 CM |
198 | struct btrfs_inode_item inode; |
199 | __le64 root_dirid; | |
62e2749e CM |
200 | __le64 blocknr; |
201 | __le32 flags; | |
202 | __le64 block_limit; | |
203 | __le64 blocks_used; | |
204 | __le32 refs; | |
9f5fae2f | 205 | } __attribute__ ((__packed__)); |
62e2749e | 206 | |
236454df CM |
207 | #define BTRFS_FILE_EXTENT_REG 0 |
208 | #define BTRFS_FILE_EXTENT_INLINE 1 | |
209 | ||
9f5fae2f | 210 | struct btrfs_file_extent_item { |
71951f35 | 211 | __le64 generation; |
236454df | 212 | u8 type; |
9f5fae2f CM |
213 | /* |
214 | * disk space consumed by the extent, checksum blocks are included | |
215 | * in these numbers | |
216 | */ | |
217 | __le64 disk_blocknr; | |
218 | __le64 disk_num_blocks; | |
219 | /* | |
dee26a9f | 220 | * the logical offset in file blocks (no csums) |
9f5fae2f CM |
221 | * this extent record is for. This allows a file extent to point |
222 | * into the middle of an existing extent on disk, sharing it | |
223 | * between two snapshots (useful if some bytes in the middle of the | |
224 | * extent have changed | |
225 | */ | |
226 | __le64 offset; | |
227 | /* | |
228 | * the logical number of file blocks (no csums included) | |
229 | */ | |
230 | __le64 num_blocks; | |
231 | } __attribute__ ((__packed__)); | |
232 | ||
f254e52c CM |
233 | struct btrfs_csum_item { |
234 | u8 csum[BTRFS_CSUM_SIZE]; | |
235 | } __attribute__ ((__packed__)); | |
236 | ||
0bd93ba0 CM |
237 | struct btrfs_device_item { |
238 | __le16 pathlen; | |
b4100d64 | 239 | __le64 device_id; |
0bd93ba0 CM |
240 | } __attribute__ ((__packed__)); |
241 | ||
87cbda5c | 242 | struct crypto_hash; |
9f5fae2f | 243 | struct btrfs_fs_info { |
62e2749e CM |
244 | struct btrfs_root *extent_root; |
245 | struct btrfs_root *tree_root; | |
0bd93ba0 | 246 | struct btrfs_root *dev_root; |
62e2749e CM |
247 | struct btrfs_key current_insert; |
248 | struct btrfs_key last_insert; | |
0f7d52f4 | 249 | struct radix_tree_root fs_roots_radix; |
8ef97622 | 250 | struct radix_tree_root pending_del_radix; |
62e2749e | 251 | struct radix_tree_root pinned_radix; |
7eccb903 | 252 | struct radix_tree_root dev_radix; |
293ffd5f | 253 | u64 generation; |
79154b1b | 254 | struct btrfs_transaction *running_transaction; |
1261ec42 | 255 | struct btrfs_super_block *disk_super; |
e20d96d6 CM |
256 | struct buffer_head *sb_buffer; |
257 | struct super_block *sb; | |
d98237b3 | 258 | struct inode *btree_inode; |
79154b1b | 259 | struct mutex trans_mutex; |
d561c025 | 260 | struct mutex fs_mutex; |
8fd17795 | 261 | struct list_head trans_list; |
87cbda5c CM |
262 | struct crypto_hash *hash_tfm; |
263 | spinlock_t hash_lock; | |
e66f709b | 264 | int do_barriers; |
d6e4a428 | 265 | struct kobject kobj; |
9f5fae2f CM |
266 | }; |
267 | ||
268 | /* | |
269 | * in ram representation of the tree. extent_root is used for all allocations | |
270 | * and for the extent tree extent_root root. current_insert is used | |
271 | * only for the extent tree. | |
272 | */ | |
273 | struct btrfs_root { | |
e20d96d6 CM |
274 | struct buffer_head *node; |
275 | struct buffer_head *commit_root; | |
62e2749e CM |
276 | struct btrfs_root_item root_item; |
277 | struct btrfs_key root_key; | |
9f5fae2f | 278 | struct btrfs_fs_info *fs_info; |
0f7d52f4 CM |
279 | struct inode *inode; |
280 | u64 objectid; | |
281 | u64 last_trans; | |
62e2749e | 282 | u32 blocksize; |
9f5fae2f CM |
283 | int ref_cows; |
284 | u32 type; | |
1b05da2e CM |
285 | u64 highest_inode; |
286 | u64 last_inode_alloc; | |
62e2749e CM |
287 | }; |
288 | ||
62e2749e CM |
289 | /* the lower bits in the key flags defines the item type */ |
290 | #define BTRFS_KEY_TYPE_MAX 256 | |
a429e513 CM |
291 | #define BTRFS_KEY_TYPE_SHIFT 24 |
292 | #define BTRFS_KEY_TYPE_MASK (((u32)BTRFS_KEY_TYPE_MAX - 1) << \ | |
293 | BTRFS_KEY_TYPE_SHIFT) | |
1e1d2701 CM |
294 | |
295 | /* | |
296 | * inode items have the data typically returned from stat and store other | |
297 | * info about object characteristics. There is one for every file and dir in | |
298 | * the FS | |
299 | */ | |
62e2749e | 300 | #define BTRFS_INODE_ITEM_KEY 1 |
1e1d2701 CM |
301 | |
302 | /* | |
303 | * dir items are the name -> inode pointers in a directory. There is one | |
304 | * for every name in a directory. | |
305 | */ | |
62e2749e | 306 | #define BTRFS_DIR_ITEM_KEY 2 |
bae45de0 | 307 | #define BTRFS_DIR_INDEX_KEY 3 |
1e1d2701 CM |
308 | /* |
309 | * inline data is file data that fits in the btree. | |
310 | */ | |
bae45de0 | 311 | #define BTRFS_INLINE_DATA_KEY 4 |
1e1d2701 CM |
312 | /* |
313 | * extent data is for data that can't fit in the btree. It points to | |
314 | * a (hopefully) huge chunk of disk | |
315 | */ | |
bae45de0 | 316 | #define BTRFS_EXTENT_DATA_KEY 5 |
f254e52c CM |
317 | /* |
318 | * csum items have the checksums for data in the extents | |
319 | */ | |
bae45de0 | 320 | #define BTRFS_CSUM_ITEM_KEY 6 |
f254e52c | 321 | |
1e1d2701 CM |
322 | /* |
323 | * root items point to tree roots. There are typically in the root | |
324 | * tree used by the super block to find all the other trees | |
325 | */ | |
bae45de0 | 326 | #define BTRFS_ROOT_ITEM_KEY 7 |
1e1d2701 CM |
327 | /* |
328 | * extent items are in the extent map tree. These record which blocks | |
329 | * are used, and how many references there are to each block | |
330 | */ | |
bae45de0 | 331 | #define BTRFS_EXTENT_ITEM_KEY 8 |
9f5fae2f | 332 | |
0bd93ba0 CM |
333 | /* |
334 | * dev items list the devices that make up the FS | |
335 | */ | |
336 | #define BTRFS_DEV_ITEM_KEY 9 | |
337 | ||
1e1d2701 CM |
338 | /* |
339 | * string items are for debugging. They just store a short string of | |
340 | * data in the FS | |
341 | */ | |
0bd93ba0 | 342 | #define BTRFS_STRING_ITEM_KEY 10 |
1e1d2701 CM |
343 | |
344 | static inline u64 btrfs_inode_generation(struct btrfs_inode_item *i) | |
345 | { | |
346 | return le64_to_cpu(i->generation); | |
347 | } | |
348 | ||
349 | static inline void btrfs_set_inode_generation(struct btrfs_inode_item *i, | |
350 | u64 val) | |
351 | { | |
352 | i->generation = cpu_to_le64(val); | |
353 | } | |
354 | ||
355 | static inline u64 btrfs_inode_size(struct btrfs_inode_item *i) | |
356 | { | |
357 | return le64_to_cpu(i->size); | |
358 | } | |
359 | ||
360 | static inline void btrfs_set_inode_size(struct btrfs_inode_item *i, u64 val) | |
361 | { | |
362 | i->size = cpu_to_le64(val); | |
363 | } | |
364 | ||
365 | static inline u64 btrfs_inode_nblocks(struct btrfs_inode_item *i) | |
366 | { | |
367 | return le64_to_cpu(i->nblocks); | |
368 | } | |
369 | ||
370 | static inline void btrfs_set_inode_nblocks(struct btrfs_inode_item *i, u64 val) | |
371 | { | |
372 | i->nblocks = cpu_to_le64(val); | |
373 | } | |
374 | ||
375 | static inline u32 btrfs_inode_nlink(struct btrfs_inode_item *i) | |
376 | { | |
377 | return le32_to_cpu(i->nlink); | |
378 | } | |
379 | ||
380 | static inline void btrfs_set_inode_nlink(struct btrfs_inode_item *i, u32 val) | |
381 | { | |
382 | i->nlink = cpu_to_le32(val); | |
383 | } | |
384 | ||
385 | static inline u32 btrfs_inode_uid(struct btrfs_inode_item *i) | |
386 | { | |
387 | return le32_to_cpu(i->uid); | |
388 | } | |
389 | ||
390 | static inline void btrfs_set_inode_uid(struct btrfs_inode_item *i, u32 val) | |
391 | { | |
392 | i->uid = cpu_to_le32(val); | |
393 | } | |
394 | ||
395 | static inline u32 btrfs_inode_gid(struct btrfs_inode_item *i) | |
396 | { | |
397 | return le32_to_cpu(i->gid); | |
398 | } | |
399 | ||
400 | static inline void btrfs_set_inode_gid(struct btrfs_inode_item *i, u32 val) | |
401 | { | |
402 | i->gid = cpu_to_le32(val); | |
403 | } | |
404 | ||
405 | static inline u32 btrfs_inode_mode(struct btrfs_inode_item *i) | |
406 | { | |
407 | return le32_to_cpu(i->mode); | |
408 | } | |
409 | ||
410 | static inline void btrfs_set_inode_mode(struct btrfs_inode_item *i, u32 val) | |
411 | { | |
412 | i->mode = cpu_to_le32(val); | |
413 | } | |
414 | ||
415 | static inline u32 btrfs_inode_rdev(struct btrfs_inode_item *i) | |
416 | { | |
417 | return le32_to_cpu(i->rdev); | |
418 | } | |
419 | ||
420 | static inline void btrfs_set_inode_rdev(struct btrfs_inode_item *i, u32 val) | |
421 | { | |
422 | i->rdev = cpu_to_le32(val); | |
423 | } | |
424 | ||
425 | static inline u16 btrfs_inode_flags(struct btrfs_inode_item *i) | |
426 | { | |
427 | return le16_to_cpu(i->flags); | |
428 | } | |
429 | ||
430 | static inline void btrfs_set_inode_flags(struct btrfs_inode_item *i, u16 val) | |
431 | { | |
432 | i->flags = cpu_to_le16(val); | |
433 | } | |
434 | ||
435 | static inline u16 btrfs_inode_compat_flags(struct btrfs_inode_item *i) | |
436 | { | |
437 | return le16_to_cpu(i->compat_flags); | |
438 | } | |
439 | ||
440 | static inline void btrfs_set_inode_compat_flags(struct btrfs_inode_item *i, | |
441 | u16 val) | |
442 | { | |
443 | i->compat_flags = cpu_to_le16(val); | |
444 | } | |
445 | ||
f254e52c | 446 | static inline u64 btrfs_timespec_sec(struct btrfs_inode_timespec *ts) |
e20d96d6 | 447 | { |
f254e52c | 448 | return le64_to_cpu(ts->sec); |
e20d96d6 CM |
449 | } |
450 | ||
451 | static inline void btrfs_set_timespec_sec(struct btrfs_inode_timespec *ts, | |
f254e52c | 452 | u64 val) |
e20d96d6 | 453 | { |
f254e52c | 454 | ts->sec = cpu_to_le64(val); |
e20d96d6 CM |
455 | } |
456 | ||
457 | static inline u32 btrfs_timespec_nsec(struct btrfs_inode_timespec *ts) | |
458 | { | |
459 | return le32_to_cpu(ts->nsec); | |
460 | } | |
461 | ||
462 | static inline void btrfs_set_timespec_nsec(struct btrfs_inode_timespec *ts, | |
463 | u32 val) | |
464 | { | |
465 | ts->nsec = cpu_to_le32(val); | |
466 | } | |
467 | ||
234b63a0 | 468 | static inline u32 btrfs_extent_refs(struct btrfs_extent_item *ei) |
cf27e1ee CM |
469 | { |
470 | return le32_to_cpu(ei->refs); | |
471 | } | |
472 | ||
234b63a0 | 473 | static inline void btrfs_set_extent_refs(struct btrfs_extent_item *ei, u32 val) |
cf27e1ee CM |
474 | { |
475 | ei->refs = cpu_to_le32(val); | |
476 | } | |
477 | ||
4d775673 CM |
478 | static inline u64 btrfs_extent_owner(struct btrfs_extent_item *ei) |
479 | { | |
480 | return le64_to_cpu(ei->owner); | |
481 | } | |
482 | ||
483 | static inline void btrfs_set_extent_owner(struct btrfs_extent_item *ei, u64 val) | |
484 | { | |
485 | ei->owner = cpu_to_le64(val); | |
486 | } | |
487 | ||
234b63a0 | 488 | static inline u64 btrfs_node_blockptr(struct btrfs_node *n, int nr) |
1d4f8a0c | 489 | { |
123abc88 | 490 | return le64_to_cpu(n->ptrs[nr].blockptr); |
1d4f8a0c CM |
491 | } |
492 | ||
4d775673 | 493 | |
234b63a0 CM |
494 | static inline void btrfs_set_node_blockptr(struct btrfs_node *n, int nr, |
495 | u64 val) | |
1d4f8a0c | 496 | { |
123abc88 | 497 | n->ptrs[nr].blockptr = cpu_to_le64(val); |
1d4f8a0c CM |
498 | } |
499 | ||
123abc88 | 500 | static inline u32 btrfs_item_offset(struct btrfs_item *item) |
0783fcfc | 501 | { |
123abc88 | 502 | return le32_to_cpu(item->offset); |
0783fcfc CM |
503 | } |
504 | ||
123abc88 | 505 | static inline void btrfs_set_item_offset(struct btrfs_item *item, u32 val) |
0783fcfc | 506 | { |
123abc88 | 507 | item->offset = cpu_to_le32(val); |
0783fcfc CM |
508 | } |
509 | ||
123abc88 | 510 | static inline u32 btrfs_item_end(struct btrfs_item *item) |
0783fcfc | 511 | { |
123abc88 | 512 | return le32_to_cpu(item->offset) + le16_to_cpu(item->size); |
0783fcfc CM |
513 | } |
514 | ||
515 | static inline u16 btrfs_item_size(struct btrfs_item *item) | |
516 | { | |
517 | return le16_to_cpu(item->size); | |
518 | } | |
519 | ||
520 | static inline void btrfs_set_item_size(struct btrfs_item *item, u16 val) | |
521 | { | |
522 | item->size = cpu_to_le16(val); | |
523 | } | |
524 | ||
1d4f6404 CM |
525 | static inline u16 btrfs_dir_flags(struct btrfs_dir_item *d) |
526 | { | |
527 | return le16_to_cpu(d->flags); | |
528 | } | |
529 | ||
530 | static inline void btrfs_set_dir_flags(struct btrfs_dir_item *d, u16 val) | |
531 | { | |
532 | d->flags = cpu_to_le16(val); | |
533 | } | |
534 | ||
535 | static inline u8 btrfs_dir_type(struct btrfs_dir_item *d) | |
536 | { | |
537 | return d->type; | |
538 | } | |
539 | ||
540 | static inline void btrfs_set_dir_type(struct btrfs_dir_item *d, u8 val) | |
541 | { | |
542 | d->type = val; | |
543 | } | |
544 | ||
a8a2ee0c CM |
545 | static inline u16 btrfs_dir_name_len(struct btrfs_dir_item *d) |
546 | { | |
547 | return le16_to_cpu(d->name_len); | |
548 | } | |
549 | ||
550 | static inline void btrfs_set_dir_name_len(struct btrfs_dir_item *d, u16 val) | |
1d4f6404 | 551 | { |
a8a2ee0c | 552 | d->name_len = cpu_to_le16(val); |
1d4f6404 CM |
553 | } |
554 | ||
e2fa7227 CM |
555 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
556 | struct btrfs_disk_key *disk) | |
557 | { | |
558 | cpu->offset = le64_to_cpu(disk->offset); | |
559 | cpu->flags = le32_to_cpu(disk->flags); | |
560 | cpu->objectid = le64_to_cpu(disk->objectid); | |
561 | } | |
562 | ||
563 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
564 | struct btrfs_key *cpu) | |
565 | { | |
566 | disk->offset = cpu_to_le64(cpu->offset); | |
567 | disk->flags = cpu_to_le32(cpu->flags); | |
568 | disk->objectid = cpu_to_le64(cpu->objectid); | |
569 | } | |
570 | ||
62e2749e | 571 | static inline u64 btrfs_disk_key_objectid(struct btrfs_disk_key *disk) |
e2fa7227 CM |
572 | { |
573 | return le64_to_cpu(disk->objectid); | |
574 | } | |
575 | ||
62e2749e CM |
576 | static inline void btrfs_set_disk_key_objectid(struct btrfs_disk_key *disk, |
577 | u64 val) | |
e2fa7227 CM |
578 | { |
579 | disk->objectid = cpu_to_le64(val); | |
580 | } | |
581 | ||
62e2749e | 582 | static inline u64 btrfs_disk_key_offset(struct btrfs_disk_key *disk) |
e2fa7227 CM |
583 | { |
584 | return le64_to_cpu(disk->offset); | |
585 | } | |
586 | ||
62e2749e CM |
587 | static inline void btrfs_set_disk_key_offset(struct btrfs_disk_key *disk, |
588 | u64 val) | |
e2fa7227 CM |
589 | { |
590 | disk->offset = cpu_to_le64(val); | |
591 | } | |
592 | ||
62e2749e | 593 | static inline u32 btrfs_disk_key_flags(struct btrfs_disk_key *disk) |
e2fa7227 CM |
594 | { |
595 | return le32_to_cpu(disk->flags); | |
596 | } | |
597 | ||
62e2749e CM |
598 | static inline void btrfs_set_disk_key_flags(struct btrfs_disk_key *disk, |
599 | u32 val) | |
e2fa7227 CM |
600 | { |
601 | disk->flags = cpu_to_le32(val); | |
602 | } | |
603 | ||
a429e513 | 604 | static inline u32 btrfs_disk_key_type(struct btrfs_disk_key *key) |
7fcde0e3 | 605 | { |
a429e513 | 606 | return le32_to_cpu(key->flags) >> BTRFS_KEY_TYPE_SHIFT; |
7fcde0e3 CM |
607 | } |
608 | ||
a429e513 CM |
609 | static inline void btrfs_set_disk_key_type(struct btrfs_disk_key *key, |
610 | u32 val) | |
7fcde0e3 | 611 | { |
a429e513 CM |
612 | u32 flags = btrfs_disk_key_flags(key); |
613 | BUG_ON(val >= BTRFS_KEY_TYPE_MAX); | |
614 | val = val << BTRFS_KEY_TYPE_SHIFT; | |
615 | flags = (flags & ~BTRFS_KEY_TYPE_MASK) | val; | |
616 | btrfs_set_disk_key_flags(key, flags); | |
7fcde0e3 CM |
617 | } |
618 | ||
62e2749e CM |
619 | static inline u32 btrfs_key_type(struct btrfs_key *key) |
620 | { | |
a429e513 | 621 | return key->flags >> BTRFS_KEY_TYPE_SHIFT; |
62e2749e CM |
622 | } |
623 | ||
a429e513 | 624 | static inline void btrfs_set_key_type(struct btrfs_key *key, u32 val) |
62e2749e | 625 | { |
a429e513 CM |
626 | BUG_ON(val >= BTRFS_KEY_TYPE_MAX); |
627 | val = val << BTRFS_KEY_TYPE_SHIFT; | |
628 | key->flags = (key->flags & ~(BTRFS_KEY_TYPE_MASK)) | val; | |
62e2749e CM |
629 | } |
630 | ||
bb492bb0 | 631 | static inline u64 btrfs_header_blocknr(struct btrfs_header *h) |
7518a238 | 632 | { |
bb492bb0 | 633 | return le64_to_cpu(h->blocknr); |
7518a238 CM |
634 | } |
635 | ||
bb492bb0 | 636 | static inline void btrfs_set_header_blocknr(struct btrfs_header *h, u64 blocknr) |
7518a238 | 637 | { |
bb492bb0 | 638 | h->blocknr = cpu_to_le64(blocknr); |
7518a238 CM |
639 | } |
640 | ||
7f5c1516 CM |
641 | static inline u64 btrfs_header_generation(struct btrfs_header *h) |
642 | { | |
643 | return le64_to_cpu(h->generation); | |
644 | } | |
645 | ||
646 | static inline void btrfs_set_header_generation(struct btrfs_header *h, | |
647 | u64 val) | |
648 | { | |
649 | h->generation = cpu_to_le64(val); | |
650 | } | |
651 | ||
4d775673 CM |
652 | static inline u64 btrfs_header_owner(struct btrfs_header *h) |
653 | { | |
654 | return le64_to_cpu(h->owner); | |
655 | } | |
656 | ||
657 | static inline void btrfs_set_header_owner(struct btrfs_header *h, | |
658 | u64 val) | |
659 | { | |
660 | h->owner = cpu_to_le64(val); | |
661 | } | |
662 | ||
bb492bb0 | 663 | static inline u16 btrfs_header_nritems(struct btrfs_header *h) |
7518a238 | 664 | { |
bb492bb0 | 665 | return le16_to_cpu(h->nritems); |
7518a238 CM |
666 | } |
667 | ||
bb492bb0 | 668 | static inline void btrfs_set_header_nritems(struct btrfs_header *h, u16 val) |
7518a238 | 669 | { |
bb492bb0 | 670 | h->nritems = cpu_to_le16(val); |
7518a238 CM |
671 | } |
672 | ||
bb492bb0 | 673 | static inline u16 btrfs_header_flags(struct btrfs_header *h) |
7518a238 | 674 | { |
bb492bb0 | 675 | return le16_to_cpu(h->flags); |
7518a238 CM |
676 | } |
677 | ||
bb492bb0 | 678 | static inline void btrfs_set_header_flags(struct btrfs_header *h, u16 val) |
7518a238 | 679 | { |
bb492bb0 | 680 | h->flags = cpu_to_le16(val); |
7518a238 CM |
681 | } |
682 | ||
bb492bb0 | 683 | static inline int btrfs_header_level(struct btrfs_header *h) |
7518a238 | 684 | { |
9a6f11ed | 685 | return h->level; |
7518a238 CM |
686 | } |
687 | ||
bb492bb0 | 688 | static inline void btrfs_set_header_level(struct btrfs_header *h, int level) |
7518a238 | 689 | { |
234b63a0 | 690 | BUG_ON(level > BTRFS_MAX_LEVEL); |
9a6f11ed | 691 | h->level = level; |
7518a238 CM |
692 | } |
693 | ||
234b63a0 | 694 | static inline int btrfs_is_leaf(struct btrfs_node *n) |
7518a238 CM |
695 | { |
696 | return (btrfs_header_level(&n->header) == 0); | |
697 | } | |
698 | ||
3768f368 CM |
699 | static inline u64 btrfs_root_blocknr(struct btrfs_root_item *item) |
700 | { | |
701 | return le64_to_cpu(item->blocknr); | |
702 | } | |
703 | ||
704 | static inline void btrfs_set_root_blocknr(struct btrfs_root_item *item, u64 val) | |
705 | { | |
706 | item->blocknr = cpu_to_le64(val); | |
707 | } | |
708 | ||
d6e4a428 CM |
709 | static inline u64 btrfs_root_dirid(struct btrfs_root_item *item) |
710 | { | |
711 | return le64_to_cpu(item->root_dirid); | |
712 | } | |
713 | ||
714 | static inline void btrfs_set_root_dirid(struct btrfs_root_item *item, u64 val) | |
715 | { | |
716 | item->root_dirid = cpu_to_le64(val); | |
717 | } | |
718 | ||
3768f368 CM |
719 | static inline u32 btrfs_root_refs(struct btrfs_root_item *item) |
720 | { | |
721 | return le32_to_cpu(item->refs); | |
722 | } | |
723 | ||
724 | static inline void btrfs_set_root_refs(struct btrfs_root_item *item, u32 val) | |
725 | { | |
726 | item->refs = cpu_to_le32(val); | |
727 | } | |
728 | ||
729 | static inline u64 btrfs_super_blocknr(struct btrfs_super_block *s) | |
730 | { | |
731 | return le64_to_cpu(s->blocknr); | |
732 | } | |
733 | ||
734 | static inline void btrfs_set_super_blocknr(struct btrfs_super_block *s, u64 val) | |
735 | { | |
736 | s->blocknr = cpu_to_le64(val); | |
737 | } | |
738 | ||
0f7d52f4 CM |
739 | static inline u64 btrfs_super_generation(struct btrfs_super_block *s) |
740 | { | |
741 | return le64_to_cpu(s->generation); | |
742 | } | |
743 | ||
744 | static inline void btrfs_set_super_generation(struct btrfs_super_block *s, | |
745 | u64 val) | |
746 | { | |
747 | s->generation = cpu_to_le64(val); | |
748 | } | |
749 | ||
3768f368 CM |
750 | static inline u64 btrfs_super_root(struct btrfs_super_block *s) |
751 | { | |
752 | return le64_to_cpu(s->root); | |
753 | } | |
754 | ||
755 | static inline void btrfs_set_super_root(struct btrfs_super_block *s, u64 val) | |
756 | { | |
757 | s->root = cpu_to_le64(val); | |
758 | } | |
759 | ||
760 | static inline u64 btrfs_super_total_blocks(struct btrfs_super_block *s) | |
761 | { | |
762 | return le64_to_cpu(s->total_blocks); | |
763 | } | |
764 | ||
765 | static inline void btrfs_set_super_total_blocks(struct btrfs_super_block *s, | |
766 | u64 val) | |
767 | { | |
768 | s->total_blocks = cpu_to_le64(val); | |
769 | } | |
770 | ||
771 | static inline u64 btrfs_super_blocks_used(struct btrfs_super_block *s) | |
772 | { | |
773 | return le64_to_cpu(s->blocks_used); | |
774 | } | |
775 | ||
776 | static inline void btrfs_set_super_blocks_used(struct btrfs_super_block *s, | |
777 | u64 val) | |
778 | { | |
779 | s->blocks_used = cpu_to_le64(val); | |
780 | } | |
781 | ||
123abc88 | 782 | static inline u32 btrfs_super_blocksize(struct btrfs_super_block *s) |
3768f368 | 783 | { |
123abc88 | 784 | return le32_to_cpu(s->blocksize); |
3768f368 CM |
785 | } |
786 | ||
787 | static inline void btrfs_set_super_blocksize(struct btrfs_super_block *s, | |
123abc88 CM |
788 | u32 val) |
789 | { | |
790 | s->blocksize = cpu_to_le32(val); | |
791 | } | |
792 | ||
2e635a27 CM |
793 | static inline u64 btrfs_super_root_dir(struct btrfs_super_block *s) |
794 | { | |
795 | return le64_to_cpu(s->root_dir_objectid); | |
796 | } | |
797 | ||
798 | static inline void btrfs_set_super_root_dir(struct btrfs_super_block *s, u64 | |
799 | val) | |
800 | { | |
801 | s->root_dir_objectid = cpu_to_le64(val); | |
802 | } | |
803 | ||
b4100d64 CM |
804 | static inline u64 btrfs_super_last_device_id(struct btrfs_super_block *s) |
805 | { | |
806 | return le64_to_cpu(s->last_device_id); | |
807 | } | |
808 | ||
809 | static inline void btrfs_set_super_last_device_id(struct btrfs_super_block *s, | |
810 | u64 val) | |
811 | { | |
812 | s->last_device_id = cpu_to_le64(val); | |
813 | } | |
814 | ||
815 | static inline u64 btrfs_super_device_id(struct btrfs_super_block *s) | |
816 | { | |
817 | return le64_to_cpu(s->device_id); | |
818 | } | |
819 | ||
820 | static inline void btrfs_set_super_device_id(struct btrfs_super_block *s, | |
821 | u64 val) | |
822 | { | |
823 | s->device_id = cpu_to_le64(val); | |
824 | } | |
825 | ||
0bd93ba0 CM |
826 | static inline u64 btrfs_super_device_block_start(struct btrfs_super_block *s) |
827 | { | |
828 | return le64_to_cpu(s->device_block_start); | |
829 | } | |
830 | ||
831 | static inline void btrfs_set_super_device_block_start(struct btrfs_super_block | |
832 | *s, u64 val) | |
833 | { | |
834 | s->device_block_start = cpu_to_le64(val); | |
835 | } | |
836 | ||
837 | static inline u64 btrfs_super_device_num_blocks(struct btrfs_super_block *s) | |
838 | { | |
839 | return le64_to_cpu(s->device_num_blocks); | |
840 | } | |
841 | ||
842 | static inline void btrfs_set_super_device_num_blocks(struct btrfs_super_block | |
843 | *s, u64 val) | |
844 | { | |
845 | s->device_num_blocks = cpu_to_le64(val); | |
846 | } | |
847 | ||
848 | static inline u64 btrfs_super_device_root(struct btrfs_super_block *s) | |
849 | { | |
850 | return le64_to_cpu(s->device_root); | |
851 | } | |
852 | ||
853 | static inline void btrfs_set_super_device_root(struct btrfs_super_block | |
854 | *s, u64 val) | |
855 | { | |
856 | s->device_root = cpu_to_le64(val); | |
857 | } | |
858 | ||
859 | ||
123abc88 | 860 | static inline u8 *btrfs_leaf_data(struct btrfs_leaf *l) |
3768f368 | 861 | { |
123abc88 | 862 | return (u8 *)l->items; |
3768f368 | 863 | } |
9f5fae2f | 864 | |
236454df CM |
865 | static inline int btrfs_file_extent_type(struct btrfs_file_extent_item *e) |
866 | { | |
867 | return e->type; | |
868 | } | |
869 | static inline void btrfs_set_file_extent_type(struct btrfs_file_extent_item *e, | |
870 | u8 val) | |
871 | { | |
872 | e->type = val; | |
873 | } | |
874 | ||
875 | static inline char *btrfs_file_extent_inline_start(struct | |
876 | btrfs_file_extent_item *e) | |
877 | { | |
878 | return (char *)(&e->disk_blocknr); | |
879 | } | |
880 | ||
881 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
882 | { | |
883 | return (unsigned long)(&((struct | |
884 | btrfs_file_extent_item *)NULL)->disk_blocknr) + datasize; | |
885 | } | |
886 | ||
887 | static inline u32 btrfs_file_extent_inline_len(struct btrfs_item *e) | |
888 | { | |
889 | struct btrfs_file_extent_item *fe = NULL; | |
890 | return btrfs_item_size(e) - (unsigned long)(&fe->disk_blocknr); | |
891 | } | |
892 | ||
9f5fae2f CM |
893 | static inline u64 btrfs_file_extent_disk_blocknr(struct btrfs_file_extent_item |
894 | *e) | |
895 | { | |
896 | return le64_to_cpu(e->disk_blocknr); | |
897 | } | |
898 | ||
899 | static inline void btrfs_set_file_extent_disk_blocknr(struct | |
900 | btrfs_file_extent_item | |
901 | *e, u64 val) | |
902 | { | |
903 | e->disk_blocknr = cpu_to_le64(val); | |
904 | } | |
905 | ||
71951f35 CM |
906 | static inline u64 btrfs_file_extent_generation(struct btrfs_file_extent_item *e) |
907 | { | |
908 | return le64_to_cpu(e->generation); | |
909 | } | |
910 | ||
911 | static inline void btrfs_set_file_extent_generation(struct | |
912 | btrfs_file_extent_item *e, | |
913 | u64 val) | |
914 | { | |
915 | e->generation = cpu_to_le64(val); | |
916 | } | |
917 | ||
9f5fae2f CM |
918 | static inline u64 btrfs_file_extent_disk_num_blocks(struct |
919 | btrfs_file_extent_item *e) | |
920 | { | |
921 | return le64_to_cpu(e->disk_num_blocks); | |
922 | } | |
923 | ||
924 | static inline void btrfs_set_file_extent_disk_num_blocks(struct | |
925 | btrfs_file_extent_item | |
926 | *e, u64 val) | |
927 | { | |
928 | e->disk_num_blocks = cpu_to_le64(val); | |
929 | } | |
930 | ||
931 | static inline u64 btrfs_file_extent_offset(struct btrfs_file_extent_item *e) | |
932 | { | |
933 | return le64_to_cpu(e->offset); | |
934 | } | |
935 | ||
936 | static inline void btrfs_set_file_extent_offset(struct btrfs_file_extent_item | |
937 | *e, u64 val) | |
938 | { | |
939 | e->offset = cpu_to_le64(val); | |
940 | } | |
941 | ||
942 | static inline u64 btrfs_file_extent_num_blocks(struct btrfs_file_extent_item | |
943 | *e) | |
944 | { | |
945 | return le64_to_cpu(e->num_blocks); | |
946 | } | |
947 | ||
948 | static inline void btrfs_set_file_extent_num_blocks(struct | |
949 | btrfs_file_extent_item *e, | |
950 | u64 val) | |
951 | { | |
952 | e->num_blocks = cpu_to_le64(val); | |
953 | } | |
954 | ||
0bd93ba0 CM |
955 | static inline u16 btrfs_device_pathlen(struct btrfs_device_item *d) |
956 | { | |
957 | return le16_to_cpu(d->pathlen); | |
958 | } | |
959 | ||
960 | static inline void btrfs_set_device_pathlen(struct btrfs_device_item *d, | |
961 | u16 val) | |
962 | { | |
963 | d->pathlen = cpu_to_le16(val); | |
964 | } | |
965 | ||
b4100d64 CM |
966 | static inline u64 btrfs_device_id(struct btrfs_device_item *d) |
967 | { | |
968 | return le64_to_cpu(d->device_id); | |
969 | } | |
970 | ||
971 | static inline void btrfs_set_device_id(struct btrfs_device_item *d, | |
972 | u64 val) | |
973 | { | |
974 | d->device_id = cpu_to_le64(val); | |
975 | } | |
976 | ||
e20d96d6 CM |
977 | static inline struct btrfs_root *btrfs_sb(struct super_block *sb) |
978 | { | |
979 | return sb->s_fs_info; | |
980 | } | |
981 | ||
d6025579 CM |
982 | static inline void btrfs_check_bounds(void *vptr, size_t len, |
983 | void *vcontainer, size_t container_len) | |
984 | { | |
985 | char *ptr = vptr; | |
986 | char *container = vcontainer; | |
987 | WARN_ON(ptr < container); | |
988 | WARN_ON(ptr + len > container + container_len); | |
989 | } | |
990 | ||
991 | static inline void btrfs_memcpy(struct btrfs_root *root, | |
992 | void *dst_block, | |
993 | void *dst, const void *src, size_t nr) | |
994 | { | |
995 | btrfs_check_bounds(dst, nr, dst_block, root->fs_info->sb->s_blocksize); | |
996 | memcpy(dst, src, nr); | |
997 | } | |
998 | ||
999 | static inline void btrfs_memmove(struct btrfs_root *root, | |
1000 | void *dst_block, | |
1001 | void *dst, void *src, size_t nr) | |
1002 | { | |
1003 | btrfs_check_bounds(dst, nr, dst_block, root->fs_info->sb->s_blocksize); | |
1004 | memmove(dst, src, nr); | |
1005 | } | |
1006 | ||
1007 | static inline void btrfs_mark_buffer_dirty(struct buffer_head *bh) | |
1008 | { | |
1009 | WARN_ON(!atomic_read(&bh->b_count)); | |
1010 | mark_buffer_dirty(bh); | |
1011 | } | |
1012 | ||
4beb1b8b CM |
1013 | /* helper function to cast into the data area of the leaf. */ |
1014 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 CM |
1015 | ((type *)(btrfs_leaf_data(leaf) + \ |
1016 | btrfs_item_offset((leaf)->items + (slot)))) | |
4beb1b8b | 1017 | |
b18c6685 | 1018 | /* extent-tree.c */ |
c5739bba CM |
1019 | int btrfs_inc_root_ref(struct btrfs_trans_handle *trans, |
1020 | struct btrfs_root *root); | |
e20d96d6 | 1021 | struct buffer_head *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
e089f05c | 1022 | struct btrfs_root *root); |
4d775673 CM |
1023 | int btrfs_alloc_extent(struct btrfs_trans_handle *trans, |
1024 | struct btrfs_root *root, u64 owner, | |
c62a1920 | 1025 | u64 num_blocks, u64 search_start, |
4d775673 | 1026 | u64 search_end, struct btrfs_key *ins); |
e089f05c | 1027 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e20d96d6 | 1028 | struct buffer_head *buf); |
e089f05c CM |
1029 | int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root |
1030 | *root, u64 blocknr, u64 num_blocks, int pin); | |
dee26a9f CM |
1031 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, struct |
1032 | btrfs_root *root); | |
b18c6685 CM |
1033 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
1034 | struct btrfs_root *root, | |
1035 | u64 blocknr, u64 num_blocks); | |
dee26a9f | 1036 | /* ctree.c */ |
6567e837 CM |
1037 | int btrfs_extend_item(struct btrfs_trans_handle *trans, struct btrfs_root |
1038 | *root, struct btrfs_path *path, u32 data_size); | |
b18c6685 CM |
1039 | int btrfs_truncate_item(struct btrfs_trans_handle *trans, |
1040 | struct btrfs_root *root, | |
1041 | struct btrfs_path *path, | |
1042 | u32 new_size); | |
e089f05c CM |
1043 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
1044 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
1045 | ins_len, int cow); | |
234b63a0 | 1046 | void btrfs_release_path(struct btrfs_root *root, struct btrfs_path *p); |
2c90e5d6 CM |
1047 | struct btrfs_path *btrfs_alloc_path(void); |
1048 | void btrfs_free_path(struct btrfs_path *p); | |
234b63a0 | 1049 | void btrfs_init_path(struct btrfs_path *p); |
e089f05c CM |
1050 | int btrfs_del_item(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1051 | struct btrfs_path *path); | |
1052 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root | |
1053 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
1054 | int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, struct btrfs_root | |
1055 | *root, struct btrfs_path *path, struct btrfs_key | |
1056 | *cpu_key, u32 data_size); | |
234b63a0 | 1057 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
123abc88 | 1058 | int btrfs_leaf_free_space(struct btrfs_root *root, struct btrfs_leaf *leaf); |
e089f05c | 1059 | int btrfs_drop_snapshot(struct btrfs_trans_handle *trans, struct btrfs_root |
e20d96d6 | 1060 | *root, struct buffer_head *snap); |
dee26a9f | 1061 | /* root-item.c */ |
e089f05c CM |
1062 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1063 | struct btrfs_key *key); | |
1064 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1065 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1066 | *item); | |
1067 | int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1068 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1069 | *item); | |
1070 | int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct | |
1071 | btrfs_root_item *item, struct btrfs_key *key); | |
dee26a9f | 1072 | /* dir-item.c */ |
e089f05c | 1073 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
1074 | *root, const char *name, int name_len, u64 dir, |
1075 | struct btrfs_key *location, u8 type); | |
7e38180e CM |
1076 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
1077 | struct btrfs_root *root, | |
1078 | struct btrfs_path *path, u64 dir, | |
1079 | const char *name, int name_len, | |
1080 | int mod); | |
1081 | struct btrfs_dir_item * | |
1082 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
1083 | struct btrfs_root *root, | |
1084 | struct btrfs_path *path, u64 dir, | |
1085 | u64 objectid, const char *name, int name_len, | |
1086 | int mod); | |
1087 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, | |
1088 | struct btrfs_path *path, | |
7f5c1516 | 1089 | const char *name, int name_len); |
7e38180e CM |
1090 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
1091 | struct btrfs_root *root, | |
1092 | struct btrfs_path *path, | |
1093 | struct btrfs_dir_item *di); | |
dee26a9f | 1094 | /* inode-map.c */ |
9f5fae2f CM |
1095 | int btrfs_find_free_objectid(struct btrfs_trans_handle *trans, |
1096 | struct btrfs_root *fs_root, | |
1097 | u64 dirid, u64 *objectid); | |
5be6f7f1 CM |
1098 | int btrfs_find_highest_inode(struct btrfs_root *fs_root, u64 *objectid); |
1099 | ||
dee26a9f | 1100 | /* inode-item.c */ |
293ffd5f CM |
1101 | int btrfs_insert_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
1102 | *root, u64 objectid, struct btrfs_inode_item | |
1103 | *inode_item); | |
1104 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root | |
d6e4a428 CM |
1105 | *root, struct btrfs_path *path, |
1106 | struct btrfs_key *location, int mod); | |
dee26a9f CM |
1107 | |
1108 | /* file-item.c */ | |
b18c6685 | 1109 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
dee26a9f | 1110 | struct btrfs_root *root, |
b18c6685 CM |
1111 | u64 objectid, u64 pos, u64 offset, |
1112 | u64 num_blocks); | |
dee26a9f CM |
1113 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
1114 | struct btrfs_root *root, | |
1115 | struct btrfs_path *path, u64 objectid, | |
9773a788 | 1116 | u64 blocknr, int mod); |
f254e52c CM |
1117 | int btrfs_csum_file_block(struct btrfs_trans_handle *trans, |
1118 | struct btrfs_root *root, | |
1119 | u64 objectid, u64 offset, | |
1120 | char *data, size_t len); | |
1121 | int btrfs_csum_verify_file_block(struct btrfs_root *root, | |
1122 | u64 objectid, u64 offset, | |
1123 | char *data, size_t len); | |
b18c6685 CM |
1124 | struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans, |
1125 | struct btrfs_root *root, | |
1126 | struct btrfs_path *path, | |
1127 | u64 objectid, u64 offset, | |
1128 | int cow); | |
d6e4a428 CM |
1129 | /* super.c */ |
1130 | extern struct subsystem btrfs_subsys; | |
1131 | ||
eb60ceac | 1132 | #endif |