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; |
bb492bb0 CM |
65 | __le16 nritems; |
66 | __le16 flags; | |
9a6f11ed | 67 | u8 level; |
eb60ceac CM |
68 | } __attribute__ ((__packed__)); |
69 | ||
234b63a0 | 70 | #define BTRFS_MAX_LEVEL 8 |
123abc88 CM |
71 | #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->blocksize - \ |
72 | sizeof(struct btrfs_header)) / \ | |
73 | (sizeof(struct btrfs_disk_key) + sizeof(u64))) | |
74 | #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header)) | |
75 | #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->blocksize)) | |
236454df CM |
76 | #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
77 | sizeof(struct btrfs_item) - \ | |
78 | sizeof(struct btrfs_file_extent_item)) | |
eb60ceac | 79 | |
e20d96d6 | 80 | struct buffer_head; |
fec577fb CM |
81 | /* |
82 | * the super block basically lists the main trees of the FS | |
83 | * it currently lacks any block count etc etc | |
84 | */ | |
234b63a0 | 85 | struct btrfs_super_block { |
f254e52c | 86 | u8 csum[BTRFS_CSUM_SIZE]; |
87cbda5c | 87 | /* the first 3 fields must match struct btrfs_header */ |
3768f368 CM |
88 | u8 fsid[16]; /* FS specific uuid */ |
89 | __le64 blocknr; /* this block number */ | |
3768f368 | 90 | __le64 magic; |
123abc88 | 91 | __le32 blocksize; |
3768f368 CM |
92 | __le64 generation; |
93 | __le64 root; | |
94 | __le64 total_blocks; | |
95 | __le64 blocks_used; | |
2e635a27 | 96 | __le64 root_dir_objectid; |
b4100d64 | 97 | __le64 last_device_id; |
0bd93ba0 CM |
98 | /* fields below here vary with the underlying disk */ |
99 | __le64 device_block_start; | |
100 | __le64 device_num_blocks; | |
101 | __le64 device_root; | |
b4100d64 | 102 | __le64 device_id; |
cfaa7295 CM |
103 | } __attribute__ ((__packed__)); |
104 | ||
fec577fb | 105 | /* |
62e2749e | 106 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
107 | * the item in the leaf (relative to the start of the data area) |
108 | */ | |
0783fcfc | 109 | struct btrfs_item { |
e2fa7227 | 110 | struct btrfs_disk_key key; |
123abc88 | 111 | __le32 offset; |
0783fcfc | 112 | __le16 size; |
eb60ceac CM |
113 | } __attribute__ ((__packed__)); |
114 | ||
fec577fb CM |
115 | /* |
116 | * leaves have an item area and a data area: | |
117 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
118 | * | |
119 | * The data is separate from the items to get the keys closer together | |
120 | * during searches. | |
121 | */ | |
234b63a0 | 122 | struct btrfs_leaf { |
bb492bb0 | 123 | struct btrfs_header header; |
123abc88 | 124 | struct btrfs_item items[]; |
eb60ceac CM |
125 | } __attribute__ ((__packed__)); |
126 | ||
fec577fb CM |
127 | /* |
128 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
129 | * other blocks | |
130 | */ | |
123abc88 CM |
131 | struct btrfs_key_ptr { |
132 | struct btrfs_disk_key key; | |
133 | __le64 blockptr; | |
134 | } __attribute__ ((__packed__)); | |
135 | ||
234b63a0 | 136 | struct btrfs_node { |
bb492bb0 | 137 | struct btrfs_header header; |
123abc88 | 138 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
139 | } __attribute__ ((__packed__)); |
140 | ||
fec577fb | 141 | /* |
234b63a0 CM |
142 | * btrfs_paths remember the path taken from the root down to the leaf. |
143 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
144 | * to any other levels that are present. |
145 | * | |
146 | * The slots array records the index of the item or block pointer | |
147 | * used while walking the tree. | |
148 | */ | |
234b63a0 | 149 | struct btrfs_path { |
e20d96d6 | 150 | struct buffer_head *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 151 | int slots[BTRFS_MAX_LEVEL]; |
eb60ceac | 152 | }; |
5de08d7d | 153 | |
62e2749e CM |
154 | /* |
155 | * items in the extent btree are used to record the objectid of the | |
156 | * owner of the block and the number of references | |
157 | */ | |
158 | struct btrfs_extent_item { | |
159 | __le32 refs; | |
62e2749e CM |
160 | } __attribute__ ((__packed__)); |
161 | ||
1e1d2701 | 162 | struct btrfs_inode_timespec { |
f254e52c | 163 | __le64 sec; |
1e1d2701 CM |
164 | __le32 nsec; |
165 | } __attribute__ ((__packed__)); | |
166 | ||
167 | /* | |
168 | * there is no padding here on purpose. If you want to extent the inode, | |
169 | * make a new item type | |
170 | */ | |
171 | struct btrfs_inode_item { | |
172 | __le64 generation; | |
173 | __le64 size; | |
174 | __le64 nblocks; | |
175 | __le32 nlink; | |
176 | __le32 uid; | |
177 | __le32 gid; | |
178 | __le32 mode; | |
179 | __le32 rdev; | |
180 | __le16 flags; | |
181 | __le16 compat_flags; | |
182 | struct btrfs_inode_timespec atime; | |
183 | struct btrfs_inode_timespec ctime; | |
184 | struct btrfs_inode_timespec mtime; | |
185 | struct btrfs_inode_timespec otime; | |
186 | } __attribute__ ((__packed__)); | |
187 | ||
62e2749e | 188 | struct btrfs_dir_item { |
d6e4a428 | 189 | struct btrfs_disk_key location; |
62e2749e | 190 | __le16 flags; |
a8a2ee0c | 191 | __le16 name_len; |
62e2749e CM |
192 | u8 type; |
193 | } __attribute__ ((__packed__)); | |
194 | ||
195 | struct btrfs_root_item { | |
d6e4a428 CM |
196 | struct btrfs_inode_item inode; |
197 | __le64 root_dirid; | |
62e2749e CM |
198 | __le64 blocknr; |
199 | __le32 flags; | |
200 | __le64 block_limit; | |
201 | __le64 blocks_used; | |
202 | __le32 refs; | |
9f5fae2f | 203 | } __attribute__ ((__packed__)); |
62e2749e | 204 | |
236454df CM |
205 | #define BTRFS_FILE_EXTENT_REG 0 |
206 | #define BTRFS_FILE_EXTENT_INLINE 1 | |
207 | ||
9f5fae2f | 208 | struct btrfs_file_extent_item { |
71951f35 | 209 | __le64 generation; |
236454df | 210 | u8 type; |
9f5fae2f CM |
211 | /* |
212 | * disk space consumed by the extent, checksum blocks are included | |
213 | * in these numbers | |
214 | */ | |
215 | __le64 disk_blocknr; | |
216 | __le64 disk_num_blocks; | |
217 | /* | |
dee26a9f | 218 | * the logical offset in file blocks (no csums) |
9f5fae2f CM |
219 | * this extent record is for. This allows a file extent to point |
220 | * into the middle of an existing extent on disk, sharing it | |
221 | * between two snapshots (useful if some bytes in the middle of the | |
222 | * extent have changed | |
223 | */ | |
224 | __le64 offset; | |
225 | /* | |
226 | * the logical number of file blocks (no csums included) | |
227 | */ | |
228 | __le64 num_blocks; | |
229 | } __attribute__ ((__packed__)); | |
230 | ||
f254e52c CM |
231 | struct btrfs_csum_item { |
232 | u8 csum[BTRFS_CSUM_SIZE]; | |
233 | } __attribute__ ((__packed__)); | |
234 | ||
0bd93ba0 CM |
235 | struct btrfs_device_item { |
236 | __le16 pathlen; | |
b4100d64 | 237 | __le64 device_id; |
0bd93ba0 CM |
238 | } __attribute__ ((__packed__)); |
239 | ||
87cbda5c | 240 | struct crypto_hash; |
9f5fae2f | 241 | struct btrfs_fs_info { |
62e2749e CM |
242 | struct btrfs_root *extent_root; |
243 | struct btrfs_root *tree_root; | |
0bd93ba0 | 244 | struct btrfs_root *dev_root; |
62e2749e CM |
245 | struct btrfs_key current_insert; |
246 | struct btrfs_key last_insert; | |
0f7d52f4 | 247 | struct radix_tree_root fs_roots_radix; |
8ef97622 | 248 | struct radix_tree_root pending_del_radix; |
62e2749e | 249 | struct radix_tree_root pinned_radix; |
7eccb903 | 250 | struct radix_tree_root dev_radix; |
293ffd5f | 251 | u64 generation; |
79154b1b | 252 | struct btrfs_transaction *running_transaction; |
1261ec42 | 253 | struct btrfs_super_block *disk_super; |
e20d96d6 CM |
254 | struct buffer_head *sb_buffer; |
255 | struct super_block *sb; | |
d98237b3 | 256 | struct inode *btree_inode; |
79154b1b | 257 | struct mutex trans_mutex; |
d561c025 | 258 | struct mutex fs_mutex; |
87cbda5c CM |
259 | struct crypto_hash *hash_tfm; |
260 | spinlock_t hash_lock; | |
d6e4a428 | 261 | struct kobject kobj; |
9f5fae2f CM |
262 | }; |
263 | ||
264 | /* | |
265 | * in ram representation of the tree. extent_root is used for all allocations | |
266 | * and for the extent tree extent_root root. current_insert is used | |
267 | * only for the extent tree. | |
268 | */ | |
269 | struct btrfs_root { | |
e20d96d6 CM |
270 | struct buffer_head *node; |
271 | struct buffer_head *commit_root; | |
62e2749e CM |
272 | struct btrfs_root_item root_item; |
273 | struct btrfs_key root_key; | |
9f5fae2f | 274 | struct btrfs_fs_info *fs_info; |
0f7d52f4 CM |
275 | struct inode *inode; |
276 | u64 objectid; | |
277 | u64 last_trans; | |
62e2749e | 278 | u32 blocksize; |
9f5fae2f CM |
279 | int ref_cows; |
280 | u32 type; | |
1b05da2e CM |
281 | u64 highest_inode; |
282 | u64 last_inode_alloc; | |
62e2749e CM |
283 | }; |
284 | ||
62e2749e CM |
285 | /* the lower bits in the key flags defines the item type */ |
286 | #define BTRFS_KEY_TYPE_MAX 256 | |
a429e513 CM |
287 | #define BTRFS_KEY_TYPE_SHIFT 24 |
288 | #define BTRFS_KEY_TYPE_MASK (((u32)BTRFS_KEY_TYPE_MAX - 1) << \ | |
289 | BTRFS_KEY_TYPE_SHIFT) | |
1e1d2701 CM |
290 | |
291 | /* | |
292 | * inode items have the data typically returned from stat and store other | |
293 | * info about object characteristics. There is one for every file and dir in | |
294 | * the FS | |
295 | */ | |
62e2749e | 296 | #define BTRFS_INODE_ITEM_KEY 1 |
1e1d2701 CM |
297 | |
298 | /* | |
299 | * dir items are the name -> inode pointers in a directory. There is one | |
300 | * for every name in a directory. | |
301 | */ | |
62e2749e | 302 | #define BTRFS_DIR_ITEM_KEY 2 |
bae45de0 | 303 | #define BTRFS_DIR_INDEX_KEY 3 |
1e1d2701 CM |
304 | /* |
305 | * inline data is file data that fits in the btree. | |
306 | */ | |
bae45de0 | 307 | #define BTRFS_INLINE_DATA_KEY 4 |
1e1d2701 CM |
308 | /* |
309 | * extent data is for data that can't fit in the btree. It points to | |
310 | * a (hopefully) huge chunk of disk | |
311 | */ | |
bae45de0 | 312 | #define BTRFS_EXTENT_DATA_KEY 5 |
f254e52c CM |
313 | /* |
314 | * csum items have the checksums for data in the extents | |
315 | */ | |
bae45de0 | 316 | #define BTRFS_CSUM_ITEM_KEY 6 |
f254e52c | 317 | |
1e1d2701 CM |
318 | /* |
319 | * root items point to tree roots. There are typically in the root | |
320 | * tree used by the super block to find all the other trees | |
321 | */ | |
bae45de0 | 322 | #define BTRFS_ROOT_ITEM_KEY 7 |
1e1d2701 CM |
323 | /* |
324 | * extent items are in the extent map tree. These record which blocks | |
325 | * are used, and how many references there are to each block | |
326 | */ | |
bae45de0 | 327 | #define BTRFS_EXTENT_ITEM_KEY 8 |
9f5fae2f | 328 | |
0bd93ba0 CM |
329 | /* |
330 | * dev items list the devices that make up the FS | |
331 | */ | |
332 | #define BTRFS_DEV_ITEM_KEY 9 | |
333 | ||
1e1d2701 CM |
334 | /* |
335 | * string items are for debugging. They just store a short string of | |
336 | * data in the FS | |
337 | */ | |
0bd93ba0 | 338 | #define BTRFS_STRING_ITEM_KEY 10 |
1e1d2701 CM |
339 | |
340 | static inline u64 btrfs_inode_generation(struct btrfs_inode_item *i) | |
341 | { | |
342 | return le64_to_cpu(i->generation); | |
343 | } | |
344 | ||
345 | static inline void btrfs_set_inode_generation(struct btrfs_inode_item *i, | |
346 | u64 val) | |
347 | { | |
348 | i->generation = cpu_to_le64(val); | |
349 | } | |
350 | ||
351 | static inline u64 btrfs_inode_size(struct btrfs_inode_item *i) | |
352 | { | |
353 | return le64_to_cpu(i->size); | |
354 | } | |
355 | ||
356 | static inline void btrfs_set_inode_size(struct btrfs_inode_item *i, u64 val) | |
357 | { | |
358 | i->size = cpu_to_le64(val); | |
359 | } | |
360 | ||
361 | static inline u64 btrfs_inode_nblocks(struct btrfs_inode_item *i) | |
362 | { | |
363 | return le64_to_cpu(i->nblocks); | |
364 | } | |
365 | ||
366 | static inline void btrfs_set_inode_nblocks(struct btrfs_inode_item *i, u64 val) | |
367 | { | |
368 | i->nblocks = cpu_to_le64(val); | |
369 | } | |
370 | ||
371 | static inline u32 btrfs_inode_nlink(struct btrfs_inode_item *i) | |
372 | { | |
373 | return le32_to_cpu(i->nlink); | |
374 | } | |
375 | ||
376 | static inline void btrfs_set_inode_nlink(struct btrfs_inode_item *i, u32 val) | |
377 | { | |
378 | i->nlink = cpu_to_le32(val); | |
379 | } | |
380 | ||
381 | static inline u32 btrfs_inode_uid(struct btrfs_inode_item *i) | |
382 | { | |
383 | return le32_to_cpu(i->uid); | |
384 | } | |
385 | ||
386 | static inline void btrfs_set_inode_uid(struct btrfs_inode_item *i, u32 val) | |
387 | { | |
388 | i->uid = cpu_to_le32(val); | |
389 | } | |
390 | ||
391 | static inline u32 btrfs_inode_gid(struct btrfs_inode_item *i) | |
392 | { | |
393 | return le32_to_cpu(i->gid); | |
394 | } | |
395 | ||
396 | static inline void btrfs_set_inode_gid(struct btrfs_inode_item *i, u32 val) | |
397 | { | |
398 | i->gid = cpu_to_le32(val); | |
399 | } | |
400 | ||
401 | static inline u32 btrfs_inode_mode(struct btrfs_inode_item *i) | |
402 | { | |
403 | return le32_to_cpu(i->mode); | |
404 | } | |
405 | ||
406 | static inline void btrfs_set_inode_mode(struct btrfs_inode_item *i, u32 val) | |
407 | { | |
408 | i->mode = cpu_to_le32(val); | |
409 | } | |
410 | ||
411 | static inline u32 btrfs_inode_rdev(struct btrfs_inode_item *i) | |
412 | { | |
413 | return le32_to_cpu(i->rdev); | |
414 | } | |
415 | ||
416 | static inline void btrfs_set_inode_rdev(struct btrfs_inode_item *i, u32 val) | |
417 | { | |
418 | i->rdev = cpu_to_le32(val); | |
419 | } | |
420 | ||
421 | static inline u16 btrfs_inode_flags(struct btrfs_inode_item *i) | |
422 | { | |
423 | return le16_to_cpu(i->flags); | |
424 | } | |
425 | ||
426 | static inline void btrfs_set_inode_flags(struct btrfs_inode_item *i, u16 val) | |
427 | { | |
428 | i->flags = cpu_to_le16(val); | |
429 | } | |
430 | ||
431 | static inline u16 btrfs_inode_compat_flags(struct btrfs_inode_item *i) | |
432 | { | |
433 | return le16_to_cpu(i->compat_flags); | |
434 | } | |
435 | ||
436 | static inline void btrfs_set_inode_compat_flags(struct btrfs_inode_item *i, | |
437 | u16 val) | |
438 | { | |
439 | i->compat_flags = cpu_to_le16(val); | |
440 | } | |
441 | ||
f254e52c | 442 | static inline u64 btrfs_timespec_sec(struct btrfs_inode_timespec *ts) |
e20d96d6 | 443 | { |
f254e52c | 444 | return le64_to_cpu(ts->sec); |
e20d96d6 CM |
445 | } |
446 | ||
447 | static inline void btrfs_set_timespec_sec(struct btrfs_inode_timespec *ts, | |
f254e52c | 448 | u64 val) |
e20d96d6 | 449 | { |
f254e52c | 450 | ts->sec = cpu_to_le64(val); |
e20d96d6 CM |
451 | } |
452 | ||
453 | static inline u32 btrfs_timespec_nsec(struct btrfs_inode_timespec *ts) | |
454 | { | |
455 | return le32_to_cpu(ts->nsec); | |
456 | } | |
457 | ||
458 | static inline void btrfs_set_timespec_nsec(struct btrfs_inode_timespec *ts, | |
459 | u32 val) | |
460 | { | |
461 | ts->nsec = cpu_to_le32(val); | |
462 | } | |
463 | ||
234b63a0 | 464 | static inline u32 btrfs_extent_refs(struct btrfs_extent_item *ei) |
cf27e1ee CM |
465 | { |
466 | return le32_to_cpu(ei->refs); | |
467 | } | |
468 | ||
234b63a0 | 469 | static inline void btrfs_set_extent_refs(struct btrfs_extent_item *ei, u32 val) |
cf27e1ee CM |
470 | { |
471 | ei->refs = cpu_to_le32(val); | |
472 | } | |
473 | ||
234b63a0 | 474 | static inline u64 btrfs_node_blockptr(struct btrfs_node *n, int nr) |
1d4f8a0c | 475 | { |
123abc88 | 476 | return le64_to_cpu(n->ptrs[nr].blockptr); |
1d4f8a0c CM |
477 | } |
478 | ||
234b63a0 CM |
479 | static inline void btrfs_set_node_blockptr(struct btrfs_node *n, int nr, |
480 | u64 val) | |
1d4f8a0c | 481 | { |
123abc88 | 482 | n->ptrs[nr].blockptr = cpu_to_le64(val); |
1d4f8a0c CM |
483 | } |
484 | ||
123abc88 | 485 | static inline u32 btrfs_item_offset(struct btrfs_item *item) |
0783fcfc | 486 | { |
123abc88 | 487 | return le32_to_cpu(item->offset); |
0783fcfc CM |
488 | } |
489 | ||
123abc88 | 490 | static inline void btrfs_set_item_offset(struct btrfs_item *item, u32 val) |
0783fcfc | 491 | { |
123abc88 | 492 | item->offset = cpu_to_le32(val); |
0783fcfc CM |
493 | } |
494 | ||
123abc88 | 495 | static inline u32 btrfs_item_end(struct btrfs_item *item) |
0783fcfc | 496 | { |
123abc88 | 497 | return le32_to_cpu(item->offset) + le16_to_cpu(item->size); |
0783fcfc CM |
498 | } |
499 | ||
500 | static inline u16 btrfs_item_size(struct btrfs_item *item) | |
501 | { | |
502 | return le16_to_cpu(item->size); | |
503 | } | |
504 | ||
505 | static inline void btrfs_set_item_size(struct btrfs_item *item, u16 val) | |
506 | { | |
507 | item->size = cpu_to_le16(val); | |
508 | } | |
509 | ||
1d4f6404 CM |
510 | static inline u16 btrfs_dir_flags(struct btrfs_dir_item *d) |
511 | { | |
512 | return le16_to_cpu(d->flags); | |
513 | } | |
514 | ||
515 | static inline void btrfs_set_dir_flags(struct btrfs_dir_item *d, u16 val) | |
516 | { | |
517 | d->flags = cpu_to_le16(val); | |
518 | } | |
519 | ||
520 | static inline u8 btrfs_dir_type(struct btrfs_dir_item *d) | |
521 | { | |
522 | return d->type; | |
523 | } | |
524 | ||
525 | static inline void btrfs_set_dir_type(struct btrfs_dir_item *d, u8 val) | |
526 | { | |
527 | d->type = val; | |
528 | } | |
529 | ||
a8a2ee0c CM |
530 | static inline u16 btrfs_dir_name_len(struct btrfs_dir_item *d) |
531 | { | |
532 | return le16_to_cpu(d->name_len); | |
533 | } | |
534 | ||
535 | static inline void btrfs_set_dir_name_len(struct btrfs_dir_item *d, u16 val) | |
1d4f6404 | 536 | { |
a8a2ee0c | 537 | d->name_len = cpu_to_le16(val); |
1d4f6404 CM |
538 | } |
539 | ||
e2fa7227 CM |
540 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
541 | struct btrfs_disk_key *disk) | |
542 | { | |
543 | cpu->offset = le64_to_cpu(disk->offset); | |
544 | cpu->flags = le32_to_cpu(disk->flags); | |
545 | cpu->objectid = le64_to_cpu(disk->objectid); | |
546 | } | |
547 | ||
548 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
549 | struct btrfs_key *cpu) | |
550 | { | |
551 | disk->offset = cpu_to_le64(cpu->offset); | |
552 | disk->flags = cpu_to_le32(cpu->flags); | |
553 | disk->objectid = cpu_to_le64(cpu->objectid); | |
554 | } | |
555 | ||
62e2749e | 556 | static inline u64 btrfs_disk_key_objectid(struct btrfs_disk_key *disk) |
e2fa7227 CM |
557 | { |
558 | return le64_to_cpu(disk->objectid); | |
559 | } | |
560 | ||
62e2749e CM |
561 | static inline void btrfs_set_disk_key_objectid(struct btrfs_disk_key *disk, |
562 | u64 val) | |
e2fa7227 CM |
563 | { |
564 | disk->objectid = cpu_to_le64(val); | |
565 | } | |
566 | ||
62e2749e | 567 | static inline u64 btrfs_disk_key_offset(struct btrfs_disk_key *disk) |
e2fa7227 CM |
568 | { |
569 | return le64_to_cpu(disk->offset); | |
570 | } | |
571 | ||
62e2749e CM |
572 | static inline void btrfs_set_disk_key_offset(struct btrfs_disk_key *disk, |
573 | u64 val) | |
e2fa7227 CM |
574 | { |
575 | disk->offset = cpu_to_le64(val); | |
576 | } | |
577 | ||
62e2749e | 578 | static inline u32 btrfs_disk_key_flags(struct btrfs_disk_key *disk) |
e2fa7227 CM |
579 | { |
580 | return le32_to_cpu(disk->flags); | |
581 | } | |
582 | ||
62e2749e CM |
583 | static inline void btrfs_set_disk_key_flags(struct btrfs_disk_key *disk, |
584 | u32 val) | |
e2fa7227 CM |
585 | { |
586 | disk->flags = cpu_to_le32(val); | |
587 | } | |
588 | ||
a429e513 | 589 | static inline u32 btrfs_disk_key_type(struct btrfs_disk_key *key) |
7fcde0e3 | 590 | { |
a429e513 | 591 | return le32_to_cpu(key->flags) >> BTRFS_KEY_TYPE_SHIFT; |
7fcde0e3 CM |
592 | } |
593 | ||
a429e513 CM |
594 | static inline void btrfs_set_disk_key_type(struct btrfs_disk_key *key, |
595 | u32 val) | |
7fcde0e3 | 596 | { |
a429e513 CM |
597 | u32 flags = btrfs_disk_key_flags(key); |
598 | BUG_ON(val >= BTRFS_KEY_TYPE_MAX); | |
599 | val = val << BTRFS_KEY_TYPE_SHIFT; | |
600 | flags = (flags & ~BTRFS_KEY_TYPE_MASK) | val; | |
601 | btrfs_set_disk_key_flags(key, flags); | |
7fcde0e3 CM |
602 | } |
603 | ||
62e2749e CM |
604 | static inline u32 btrfs_key_type(struct btrfs_key *key) |
605 | { | |
a429e513 | 606 | return key->flags >> BTRFS_KEY_TYPE_SHIFT; |
62e2749e CM |
607 | } |
608 | ||
a429e513 | 609 | static inline void btrfs_set_key_type(struct btrfs_key *key, u32 val) |
62e2749e | 610 | { |
a429e513 CM |
611 | BUG_ON(val >= BTRFS_KEY_TYPE_MAX); |
612 | val = val << BTRFS_KEY_TYPE_SHIFT; | |
613 | key->flags = (key->flags & ~(BTRFS_KEY_TYPE_MASK)) | val; | |
62e2749e CM |
614 | } |
615 | ||
bb492bb0 | 616 | static inline u64 btrfs_header_blocknr(struct btrfs_header *h) |
7518a238 | 617 | { |
bb492bb0 | 618 | return le64_to_cpu(h->blocknr); |
7518a238 CM |
619 | } |
620 | ||
bb492bb0 | 621 | static inline void btrfs_set_header_blocknr(struct btrfs_header *h, u64 blocknr) |
7518a238 | 622 | { |
bb492bb0 | 623 | h->blocknr = cpu_to_le64(blocknr); |
7518a238 CM |
624 | } |
625 | ||
7f5c1516 CM |
626 | static inline u64 btrfs_header_generation(struct btrfs_header *h) |
627 | { | |
628 | return le64_to_cpu(h->generation); | |
629 | } | |
630 | ||
631 | static inline void btrfs_set_header_generation(struct btrfs_header *h, | |
632 | u64 val) | |
633 | { | |
634 | h->generation = cpu_to_le64(val); | |
635 | } | |
636 | ||
bb492bb0 | 637 | static inline u16 btrfs_header_nritems(struct btrfs_header *h) |
7518a238 | 638 | { |
bb492bb0 | 639 | return le16_to_cpu(h->nritems); |
7518a238 CM |
640 | } |
641 | ||
bb492bb0 | 642 | static inline void btrfs_set_header_nritems(struct btrfs_header *h, u16 val) |
7518a238 | 643 | { |
bb492bb0 | 644 | h->nritems = cpu_to_le16(val); |
7518a238 CM |
645 | } |
646 | ||
bb492bb0 | 647 | static inline u16 btrfs_header_flags(struct btrfs_header *h) |
7518a238 | 648 | { |
bb492bb0 | 649 | return le16_to_cpu(h->flags); |
7518a238 CM |
650 | } |
651 | ||
bb492bb0 | 652 | static inline void btrfs_set_header_flags(struct btrfs_header *h, u16 val) |
7518a238 | 653 | { |
bb492bb0 | 654 | h->flags = cpu_to_le16(val); |
7518a238 CM |
655 | } |
656 | ||
bb492bb0 | 657 | static inline int btrfs_header_level(struct btrfs_header *h) |
7518a238 | 658 | { |
9a6f11ed | 659 | return h->level; |
7518a238 CM |
660 | } |
661 | ||
bb492bb0 | 662 | static inline void btrfs_set_header_level(struct btrfs_header *h, int level) |
7518a238 | 663 | { |
234b63a0 | 664 | BUG_ON(level > BTRFS_MAX_LEVEL); |
9a6f11ed | 665 | h->level = level; |
7518a238 CM |
666 | } |
667 | ||
234b63a0 | 668 | static inline int btrfs_is_leaf(struct btrfs_node *n) |
7518a238 CM |
669 | { |
670 | return (btrfs_header_level(&n->header) == 0); | |
671 | } | |
672 | ||
3768f368 CM |
673 | static inline u64 btrfs_root_blocknr(struct btrfs_root_item *item) |
674 | { | |
675 | return le64_to_cpu(item->blocknr); | |
676 | } | |
677 | ||
678 | static inline void btrfs_set_root_blocknr(struct btrfs_root_item *item, u64 val) | |
679 | { | |
680 | item->blocknr = cpu_to_le64(val); | |
681 | } | |
682 | ||
d6e4a428 CM |
683 | static inline u64 btrfs_root_dirid(struct btrfs_root_item *item) |
684 | { | |
685 | return le64_to_cpu(item->root_dirid); | |
686 | } | |
687 | ||
688 | static inline void btrfs_set_root_dirid(struct btrfs_root_item *item, u64 val) | |
689 | { | |
690 | item->root_dirid = cpu_to_le64(val); | |
691 | } | |
692 | ||
3768f368 CM |
693 | static inline u32 btrfs_root_refs(struct btrfs_root_item *item) |
694 | { | |
695 | return le32_to_cpu(item->refs); | |
696 | } | |
697 | ||
698 | static inline void btrfs_set_root_refs(struct btrfs_root_item *item, u32 val) | |
699 | { | |
700 | item->refs = cpu_to_le32(val); | |
701 | } | |
702 | ||
703 | static inline u64 btrfs_super_blocknr(struct btrfs_super_block *s) | |
704 | { | |
705 | return le64_to_cpu(s->blocknr); | |
706 | } | |
707 | ||
708 | static inline void btrfs_set_super_blocknr(struct btrfs_super_block *s, u64 val) | |
709 | { | |
710 | s->blocknr = cpu_to_le64(val); | |
711 | } | |
712 | ||
0f7d52f4 CM |
713 | static inline u64 btrfs_super_generation(struct btrfs_super_block *s) |
714 | { | |
715 | return le64_to_cpu(s->generation); | |
716 | } | |
717 | ||
718 | static inline void btrfs_set_super_generation(struct btrfs_super_block *s, | |
719 | u64 val) | |
720 | { | |
721 | s->generation = cpu_to_le64(val); | |
722 | } | |
723 | ||
3768f368 CM |
724 | static inline u64 btrfs_super_root(struct btrfs_super_block *s) |
725 | { | |
726 | return le64_to_cpu(s->root); | |
727 | } | |
728 | ||
729 | static inline void btrfs_set_super_root(struct btrfs_super_block *s, u64 val) | |
730 | { | |
731 | s->root = cpu_to_le64(val); | |
732 | } | |
733 | ||
734 | static inline u64 btrfs_super_total_blocks(struct btrfs_super_block *s) | |
735 | { | |
736 | return le64_to_cpu(s->total_blocks); | |
737 | } | |
738 | ||
739 | static inline void btrfs_set_super_total_blocks(struct btrfs_super_block *s, | |
740 | u64 val) | |
741 | { | |
742 | s->total_blocks = cpu_to_le64(val); | |
743 | } | |
744 | ||
745 | static inline u64 btrfs_super_blocks_used(struct btrfs_super_block *s) | |
746 | { | |
747 | return le64_to_cpu(s->blocks_used); | |
748 | } | |
749 | ||
750 | static inline void btrfs_set_super_blocks_used(struct btrfs_super_block *s, | |
751 | u64 val) | |
752 | { | |
753 | s->blocks_used = cpu_to_le64(val); | |
754 | } | |
755 | ||
123abc88 | 756 | static inline u32 btrfs_super_blocksize(struct btrfs_super_block *s) |
3768f368 | 757 | { |
123abc88 | 758 | return le32_to_cpu(s->blocksize); |
3768f368 CM |
759 | } |
760 | ||
761 | static inline void btrfs_set_super_blocksize(struct btrfs_super_block *s, | |
123abc88 CM |
762 | u32 val) |
763 | { | |
764 | s->blocksize = cpu_to_le32(val); | |
765 | } | |
766 | ||
2e635a27 CM |
767 | static inline u64 btrfs_super_root_dir(struct btrfs_super_block *s) |
768 | { | |
769 | return le64_to_cpu(s->root_dir_objectid); | |
770 | } | |
771 | ||
772 | static inline void btrfs_set_super_root_dir(struct btrfs_super_block *s, u64 | |
773 | val) | |
774 | { | |
775 | s->root_dir_objectid = cpu_to_le64(val); | |
776 | } | |
777 | ||
b4100d64 CM |
778 | static inline u64 btrfs_super_last_device_id(struct btrfs_super_block *s) |
779 | { | |
780 | return le64_to_cpu(s->last_device_id); | |
781 | } | |
782 | ||
783 | static inline void btrfs_set_super_last_device_id(struct btrfs_super_block *s, | |
784 | u64 val) | |
785 | { | |
786 | s->last_device_id = cpu_to_le64(val); | |
787 | } | |
788 | ||
789 | static inline u64 btrfs_super_device_id(struct btrfs_super_block *s) | |
790 | { | |
791 | return le64_to_cpu(s->device_id); | |
792 | } | |
793 | ||
794 | static inline void btrfs_set_super_device_id(struct btrfs_super_block *s, | |
795 | u64 val) | |
796 | { | |
797 | s->device_id = cpu_to_le64(val); | |
798 | } | |
799 | ||
0bd93ba0 CM |
800 | static inline u64 btrfs_super_device_block_start(struct btrfs_super_block *s) |
801 | { | |
802 | return le64_to_cpu(s->device_block_start); | |
803 | } | |
804 | ||
805 | static inline void btrfs_set_super_device_block_start(struct btrfs_super_block | |
806 | *s, u64 val) | |
807 | { | |
808 | s->device_block_start = cpu_to_le64(val); | |
809 | } | |
810 | ||
811 | static inline u64 btrfs_super_device_num_blocks(struct btrfs_super_block *s) | |
812 | { | |
813 | return le64_to_cpu(s->device_num_blocks); | |
814 | } | |
815 | ||
816 | static inline void btrfs_set_super_device_num_blocks(struct btrfs_super_block | |
817 | *s, u64 val) | |
818 | { | |
819 | s->device_num_blocks = cpu_to_le64(val); | |
820 | } | |
821 | ||
822 | static inline u64 btrfs_super_device_root(struct btrfs_super_block *s) | |
823 | { | |
824 | return le64_to_cpu(s->device_root); | |
825 | } | |
826 | ||
827 | static inline void btrfs_set_super_device_root(struct btrfs_super_block | |
828 | *s, u64 val) | |
829 | { | |
830 | s->device_root = cpu_to_le64(val); | |
831 | } | |
832 | ||
833 | ||
123abc88 | 834 | static inline u8 *btrfs_leaf_data(struct btrfs_leaf *l) |
3768f368 | 835 | { |
123abc88 | 836 | return (u8 *)l->items; |
3768f368 | 837 | } |
9f5fae2f | 838 | |
236454df CM |
839 | static inline int btrfs_file_extent_type(struct btrfs_file_extent_item *e) |
840 | { | |
841 | return e->type; | |
842 | } | |
843 | static inline void btrfs_set_file_extent_type(struct btrfs_file_extent_item *e, | |
844 | u8 val) | |
845 | { | |
846 | e->type = val; | |
847 | } | |
848 | ||
849 | static inline char *btrfs_file_extent_inline_start(struct | |
850 | btrfs_file_extent_item *e) | |
851 | { | |
852 | return (char *)(&e->disk_blocknr); | |
853 | } | |
854 | ||
855 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
856 | { | |
857 | return (unsigned long)(&((struct | |
858 | btrfs_file_extent_item *)NULL)->disk_blocknr) + datasize; | |
859 | } | |
860 | ||
861 | static inline u32 btrfs_file_extent_inline_len(struct btrfs_item *e) | |
862 | { | |
863 | struct btrfs_file_extent_item *fe = NULL; | |
864 | return btrfs_item_size(e) - (unsigned long)(&fe->disk_blocknr); | |
865 | } | |
866 | ||
9f5fae2f CM |
867 | static inline u64 btrfs_file_extent_disk_blocknr(struct btrfs_file_extent_item |
868 | *e) | |
869 | { | |
870 | return le64_to_cpu(e->disk_blocknr); | |
871 | } | |
872 | ||
873 | static inline void btrfs_set_file_extent_disk_blocknr(struct | |
874 | btrfs_file_extent_item | |
875 | *e, u64 val) | |
876 | { | |
877 | e->disk_blocknr = cpu_to_le64(val); | |
878 | } | |
879 | ||
71951f35 CM |
880 | static inline u64 btrfs_file_extent_generation(struct btrfs_file_extent_item *e) |
881 | { | |
882 | return le64_to_cpu(e->generation); | |
883 | } | |
884 | ||
885 | static inline void btrfs_set_file_extent_generation(struct | |
886 | btrfs_file_extent_item *e, | |
887 | u64 val) | |
888 | { | |
889 | e->generation = cpu_to_le64(val); | |
890 | } | |
891 | ||
9f5fae2f CM |
892 | static inline u64 btrfs_file_extent_disk_num_blocks(struct |
893 | btrfs_file_extent_item *e) | |
894 | { | |
895 | return le64_to_cpu(e->disk_num_blocks); | |
896 | } | |
897 | ||
898 | static inline void btrfs_set_file_extent_disk_num_blocks(struct | |
899 | btrfs_file_extent_item | |
900 | *e, u64 val) | |
901 | { | |
902 | e->disk_num_blocks = cpu_to_le64(val); | |
903 | } | |
904 | ||
905 | static inline u64 btrfs_file_extent_offset(struct btrfs_file_extent_item *e) | |
906 | { | |
907 | return le64_to_cpu(e->offset); | |
908 | } | |
909 | ||
910 | static inline void btrfs_set_file_extent_offset(struct btrfs_file_extent_item | |
911 | *e, u64 val) | |
912 | { | |
913 | e->offset = cpu_to_le64(val); | |
914 | } | |
915 | ||
916 | static inline u64 btrfs_file_extent_num_blocks(struct btrfs_file_extent_item | |
917 | *e) | |
918 | { | |
919 | return le64_to_cpu(e->num_blocks); | |
920 | } | |
921 | ||
922 | static inline void btrfs_set_file_extent_num_blocks(struct | |
923 | btrfs_file_extent_item *e, | |
924 | u64 val) | |
925 | { | |
926 | e->num_blocks = cpu_to_le64(val); | |
927 | } | |
928 | ||
0bd93ba0 CM |
929 | static inline u16 btrfs_device_pathlen(struct btrfs_device_item *d) |
930 | { | |
931 | return le16_to_cpu(d->pathlen); | |
932 | } | |
933 | ||
934 | static inline void btrfs_set_device_pathlen(struct btrfs_device_item *d, | |
935 | u16 val) | |
936 | { | |
937 | d->pathlen = cpu_to_le16(val); | |
938 | } | |
939 | ||
b4100d64 CM |
940 | static inline u64 btrfs_device_id(struct btrfs_device_item *d) |
941 | { | |
942 | return le64_to_cpu(d->device_id); | |
943 | } | |
944 | ||
945 | static inline void btrfs_set_device_id(struct btrfs_device_item *d, | |
946 | u64 val) | |
947 | { | |
948 | d->device_id = cpu_to_le64(val); | |
949 | } | |
950 | ||
e20d96d6 CM |
951 | static inline struct btrfs_root *btrfs_sb(struct super_block *sb) |
952 | { | |
953 | return sb->s_fs_info; | |
954 | } | |
955 | ||
d6025579 CM |
956 | static inline void btrfs_check_bounds(void *vptr, size_t len, |
957 | void *vcontainer, size_t container_len) | |
958 | { | |
959 | char *ptr = vptr; | |
960 | char *container = vcontainer; | |
961 | WARN_ON(ptr < container); | |
962 | WARN_ON(ptr + len > container + container_len); | |
963 | } | |
964 | ||
965 | static inline void btrfs_memcpy(struct btrfs_root *root, | |
966 | void *dst_block, | |
967 | void *dst, const void *src, size_t nr) | |
968 | { | |
969 | btrfs_check_bounds(dst, nr, dst_block, root->fs_info->sb->s_blocksize); | |
970 | memcpy(dst, src, nr); | |
971 | } | |
972 | ||
973 | static inline void btrfs_memmove(struct btrfs_root *root, | |
974 | void *dst_block, | |
975 | void *dst, void *src, size_t nr) | |
976 | { | |
977 | btrfs_check_bounds(dst, nr, dst_block, root->fs_info->sb->s_blocksize); | |
978 | memmove(dst, src, nr); | |
979 | } | |
980 | ||
981 | static inline void btrfs_mark_buffer_dirty(struct buffer_head *bh) | |
982 | { | |
983 | WARN_ON(!atomic_read(&bh->b_count)); | |
984 | mark_buffer_dirty(bh); | |
985 | } | |
986 | ||
4beb1b8b CM |
987 | /* helper function to cast into the data area of the leaf. */ |
988 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 CM |
989 | ((type *)(btrfs_leaf_data(leaf) + \ |
990 | btrfs_item_offset((leaf)->items + (slot)))) | |
4beb1b8b | 991 | |
b18c6685 | 992 | /* extent-tree.c */ |
c5739bba CM |
993 | int btrfs_inc_root_ref(struct btrfs_trans_handle *trans, |
994 | struct btrfs_root *root); | |
e20d96d6 | 995 | struct buffer_head *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
e089f05c | 996 | struct btrfs_root *root); |
dee26a9f CM |
997 | int btrfs_alloc_extent(struct btrfs_trans_handle *trans, struct btrfs_root |
998 | *root, u64 num_blocks, u64 search_start, u64 | |
d0dbc624 | 999 | search_end, struct btrfs_key *ins); |
e089f05c | 1000 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e20d96d6 | 1001 | struct buffer_head *buf); |
e089f05c CM |
1002 | int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root |
1003 | *root, u64 blocknr, u64 num_blocks, int pin); | |
dee26a9f CM |
1004 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, struct |
1005 | btrfs_root *root); | |
b18c6685 CM |
1006 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
1007 | struct btrfs_root *root, | |
1008 | u64 blocknr, u64 num_blocks); | |
dee26a9f | 1009 | /* ctree.c */ |
6567e837 CM |
1010 | int btrfs_extend_item(struct btrfs_trans_handle *trans, struct btrfs_root |
1011 | *root, struct btrfs_path *path, u32 data_size); | |
b18c6685 CM |
1012 | int btrfs_truncate_item(struct btrfs_trans_handle *trans, |
1013 | struct btrfs_root *root, | |
1014 | struct btrfs_path *path, | |
1015 | u32 new_size); | |
e089f05c CM |
1016 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
1017 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
1018 | ins_len, int cow); | |
234b63a0 | 1019 | void btrfs_release_path(struct btrfs_root *root, struct btrfs_path *p); |
2c90e5d6 CM |
1020 | struct btrfs_path *btrfs_alloc_path(void); |
1021 | void btrfs_free_path(struct btrfs_path *p); | |
234b63a0 | 1022 | void btrfs_init_path(struct btrfs_path *p); |
e089f05c CM |
1023 | int btrfs_del_item(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1024 | struct btrfs_path *path); | |
1025 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root | |
1026 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
1027 | int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, struct btrfs_root | |
1028 | *root, struct btrfs_path *path, struct btrfs_key | |
1029 | *cpu_key, u32 data_size); | |
234b63a0 | 1030 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
123abc88 | 1031 | int btrfs_leaf_free_space(struct btrfs_root *root, struct btrfs_leaf *leaf); |
e089f05c | 1032 | int btrfs_drop_snapshot(struct btrfs_trans_handle *trans, struct btrfs_root |
e20d96d6 | 1033 | *root, struct buffer_head *snap); |
dee26a9f | 1034 | /* root-item.c */ |
e089f05c CM |
1035 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1036 | struct btrfs_key *key); | |
1037 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1038 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1039 | *item); | |
1040 | int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1041 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1042 | *item); | |
1043 | int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct | |
1044 | btrfs_root_item *item, struct btrfs_key *key); | |
dee26a9f | 1045 | /* dir-item.c */ |
e089f05c | 1046 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
1047 | *root, const char *name, int name_len, u64 dir, |
1048 | struct btrfs_key *location, u8 type); | |
7e38180e CM |
1049 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
1050 | struct btrfs_root *root, | |
1051 | struct btrfs_path *path, u64 dir, | |
1052 | const char *name, int name_len, | |
1053 | int mod); | |
1054 | struct btrfs_dir_item * | |
1055 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
1056 | struct btrfs_root *root, | |
1057 | struct btrfs_path *path, u64 dir, | |
1058 | u64 objectid, const char *name, int name_len, | |
1059 | int mod); | |
1060 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, | |
1061 | struct btrfs_path *path, | |
7f5c1516 | 1062 | const char *name, int name_len); |
7e38180e CM |
1063 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
1064 | struct btrfs_root *root, | |
1065 | struct btrfs_path *path, | |
1066 | struct btrfs_dir_item *di); | |
dee26a9f | 1067 | /* inode-map.c */ |
9f5fae2f CM |
1068 | int btrfs_find_free_objectid(struct btrfs_trans_handle *trans, |
1069 | struct btrfs_root *fs_root, | |
1070 | u64 dirid, u64 *objectid); | |
5be6f7f1 CM |
1071 | int btrfs_find_highest_inode(struct btrfs_root *fs_root, u64 *objectid); |
1072 | ||
dee26a9f | 1073 | /* inode-item.c */ |
293ffd5f CM |
1074 | int btrfs_insert_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
1075 | *root, u64 objectid, struct btrfs_inode_item | |
1076 | *inode_item); | |
1077 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root | |
d6e4a428 CM |
1078 | *root, struct btrfs_path *path, |
1079 | struct btrfs_key *location, int mod); | |
dee26a9f CM |
1080 | |
1081 | /* file-item.c */ | |
b18c6685 | 1082 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
dee26a9f | 1083 | struct btrfs_root *root, |
b18c6685 CM |
1084 | u64 objectid, u64 pos, u64 offset, |
1085 | u64 num_blocks); | |
dee26a9f CM |
1086 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
1087 | struct btrfs_root *root, | |
1088 | struct btrfs_path *path, u64 objectid, | |
9773a788 | 1089 | u64 blocknr, int mod); |
f254e52c CM |
1090 | int btrfs_csum_file_block(struct btrfs_trans_handle *trans, |
1091 | struct btrfs_root *root, | |
1092 | u64 objectid, u64 offset, | |
1093 | char *data, size_t len); | |
1094 | int btrfs_csum_verify_file_block(struct btrfs_root *root, | |
1095 | u64 objectid, u64 offset, | |
1096 | char *data, size_t len); | |
b18c6685 CM |
1097 | struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans, |
1098 | struct btrfs_root *root, | |
1099 | struct btrfs_path *path, | |
1100 | u64 objectid, u64 offset, | |
1101 | int cow); | |
d6e4a428 CM |
1102 | /* super.c */ |
1103 | extern struct subsystem btrfs_subsys; | |
1104 | ||
eb60ceac | 1105 | #endif |