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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; |
8fd17795 | 259 | struct list_head trans_list; |
87cbda5c CM |
260 | struct crypto_hash *hash_tfm; |
261 | spinlock_t hash_lock; | |
d6e4a428 | 262 | struct kobject kobj; |
9f5fae2f CM |
263 | }; |
264 | ||
265 | /* | |
266 | * in ram representation of the tree. extent_root is used for all allocations | |
267 | * and for the extent tree extent_root root. current_insert is used | |
268 | * only for the extent tree. | |
269 | */ | |
270 | struct btrfs_root { | |
e20d96d6 CM |
271 | struct buffer_head *node; |
272 | struct buffer_head *commit_root; | |
62e2749e CM |
273 | struct btrfs_root_item root_item; |
274 | struct btrfs_key root_key; | |
9f5fae2f | 275 | struct btrfs_fs_info *fs_info; |
0f7d52f4 CM |
276 | struct inode *inode; |
277 | u64 objectid; | |
278 | u64 last_trans; | |
62e2749e | 279 | u32 blocksize; |
9f5fae2f CM |
280 | int ref_cows; |
281 | u32 type; | |
1b05da2e CM |
282 | u64 highest_inode; |
283 | u64 last_inode_alloc; | |
62e2749e CM |
284 | }; |
285 | ||
62e2749e CM |
286 | /* the lower bits in the key flags defines the item type */ |
287 | #define BTRFS_KEY_TYPE_MAX 256 | |
a429e513 CM |
288 | #define BTRFS_KEY_TYPE_SHIFT 24 |
289 | #define BTRFS_KEY_TYPE_MASK (((u32)BTRFS_KEY_TYPE_MAX - 1) << \ | |
290 | BTRFS_KEY_TYPE_SHIFT) | |
1e1d2701 CM |
291 | |
292 | /* | |
293 | * inode items have the data typically returned from stat and store other | |
294 | * info about object characteristics. There is one for every file and dir in | |
295 | * the FS | |
296 | */ | |
62e2749e | 297 | #define BTRFS_INODE_ITEM_KEY 1 |
1e1d2701 CM |
298 | |
299 | /* | |
300 | * dir items are the name -> inode pointers in a directory. There is one | |
301 | * for every name in a directory. | |
302 | */ | |
62e2749e | 303 | #define BTRFS_DIR_ITEM_KEY 2 |
bae45de0 | 304 | #define BTRFS_DIR_INDEX_KEY 3 |
1e1d2701 CM |
305 | /* |
306 | * inline data is file data that fits in the btree. | |
307 | */ | |
bae45de0 | 308 | #define BTRFS_INLINE_DATA_KEY 4 |
1e1d2701 CM |
309 | /* |
310 | * extent data is for data that can't fit in the btree. It points to | |
311 | * a (hopefully) huge chunk of disk | |
312 | */ | |
bae45de0 | 313 | #define BTRFS_EXTENT_DATA_KEY 5 |
f254e52c CM |
314 | /* |
315 | * csum items have the checksums for data in the extents | |
316 | */ | |
bae45de0 | 317 | #define BTRFS_CSUM_ITEM_KEY 6 |
f254e52c | 318 | |
1e1d2701 CM |
319 | /* |
320 | * root items point to tree roots. There are typically in the root | |
321 | * tree used by the super block to find all the other trees | |
322 | */ | |
bae45de0 | 323 | #define BTRFS_ROOT_ITEM_KEY 7 |
1e1d2701 CM |
324 | /* |
325 | * extent items are in the extent map tree. These record which blocks | |
326 | * are used, and how many references there are to each block | |
327 | */ | |
bae45de0 | 328 | #define BTRFS_EXTENT_ITEM_KEY 8 |
9f5fae2f | 329 | |
0bd93ba0 CM |
330 | /* |
331 | * dev items list the devices that make up the FS | |
332 | */ | |
333 | #define BTRFS_DEV_ITEM_KEY 9 | |
334 | ||
1e1d2701 CM |
335 | /* |
336 | * string items are for debugging. They just store a short string of | |
337 | * data in the FS | |
338 | */ | |
0bd93ba0 | 339 | #define BTRFS_STRING_ITEM_KEY 10 |
1e1d2701 CM |
340 | |
341 | static inline u64 btrfs_inode_generation(struct btrfs_inode_item *i) | |
342 | { | |
343 | return le64_to_cpu(i->generation); | |
344 | } | |
345 | ||
346 | static inline void btrfs_set_inode_generation(struct btrfs_inode_item *i, | |
347 | u64 val) | |
348 | { | |
349 | i->generation = cpu_to_le64(val); | |
350 | } | |
351 | ||
352 | static inline u64 btrfs_inode_size(struct btrfs_inode_item *i) | |
353 | { | |
354 | return le64_to_cpu(i->size); | |
355 | } | |
356 | ||
357 | static inline void btrfs_set_inode_size(struct btrfs_inode_item *i, u64 val) | |
358 | { | |
359 | i->size = cpu_to_le64(val); | |
360 | } | |
361 | ||
362 | static inline u64 btrfs_inode_nblocks(struct btrfs_inode_item *i) | |
363 | { | |
364 | return le64_to_cpu(i->nblocks); | |
365 | } | |
366 | ||
367 | static inline void btrfs_set_inode_nblocks(struct btrfs_inode_item *i, u64 val) | |
368 | { | |
369 | i->nblocks = cpu_to_le64(val); | |
370 | } | |
371 | ||
372 | static inline u32 btrfs_inode_nlink(struct btrfs_inode_item *i) | |
373 | { | |
374 | return le32_to_cpu(i->nlink); | |
375 | } | |
376 | ||
377 | static inline void btrfs_set_inode_nlink(struct btrfs_inode_item *i, u32 val) | |
378 | { | |
379 | i->nlink = cpu_to_le32(val); | |
380 | } | |
381 | ||
382 | static inline u32 btrfs_inode_uid(struct btrfs_inode_item *i) | |
383 | { | |
384 | return le32_to_cpu(i->uid); | |
385 | } | |
386 | ||
387 | static inline void btrfs_set_inode_uid(struct btrfs_inode_item *i, u32 val) | |
388 | { | |
389 | i->uid = cpu_to_le32(val); | |
390 | } | |
391 | ||
392 | static inline u32 btrfs_inode_gid(struct btrfs_inode_item *i) | |
393 | { | |
394 | return le32_to_cpu(i->gid); | |
395 | } | |
396 | ||
397 | static inline void btrfs_set_inode_gid(struct btrfs_inode_item *i, u32 val) | |
398 | { | |
399 | i->gid = cpu_to_le32(val); | |
400 | } | |
401 | ||
402 | static inline u32 btrfs_inode_mode(struct btrfs_inode_item *i) | |
403 | { | |
404 | return le32_to_cpu(i->mode); | |
405 | } | |
406 | ||
407 | static inline void btrfs_set_inode_mode(struct btrfs_inode_item *i, u32 val) | |
408 | { | |
409 | i->mode = cpu_to_le32(val); | |
410 | } | |
411 | ||
412 | static inline u32 btrfs_inode_rdev(struct btrfs_inode_item *i) | |
413 | { | |
414 | return le32_to_cpu(i->rdev); | |
415 | } | |
416 | ||
417 | static inline void btrfs_set_inode_rdev(struct btrfs_inode_item *i, u32 val) | |
418 | { | |
419 | i->rdev = cpu_to_le32(val); | |
420 | } | |
421 | ||
422 | static inline u16 btrfs_inode_flags(struct btrfs_inode_item *i) | |
423 | { | |
424 | return le16_to_cpu(i->flags); | |
425 | } | |
426 | ||
427 | static inline void btrfs_set_inode_flags(struct btrfs_inode_item *i, u16 val) | |
428 | { | |
429 | i->flags = cpu_to_le16(val); | |
430 | } | |
431 | ||
432 | static inline u16 btrfs_inode_compat_flags(struct btrfs_inode_item *i) | |
433 | { | |
434 | return le16_to_cpu(i->compat_flags); | |
435 | } | |
436 | ||
437 | static inline void btrfs_set_inode_compat_flags(struct btrfs_inode_item *i, | |
438 | u16 val) | |
439 | { | |
440 | i->compat_flags = cpu_to_le16(val); | |
441 | } | |
442 | ||
f254e52c | 443 | static inline u64 btrfs_timespec_sec(struct btrfs_inode_timespec *ts) |
e20d96d6 | 444 | { |
f254e52c | 445 | return le64_to_cpu(ts->sec); |
e20d96d6 CM |
446 | } |
447 | ||
448 | static inline void btrfs_set_timespec_sec(struct btrfs_inode_timespec *ts, | |
f254e52c | 449 | u64 val) |
e20d96d6 | 450 | { |
f254e52c | 451 | ts->sec = cpu_to_le64(val); |
e20d96d6 CM |
452 | } |
453 | ||
454 | static inline u32 btrfs_timespec_nsec(struct btrfs_inode_timespec *ts) | |
455 | { | |
456 | return le32_to_cpu(ts->nsec); | |
457 | } | |
458 | ||
459 | static inline void btrfs_set_timespec_nsec(struct btrfs_inode_timespec *ts, | |
460 | u32 val) | |
461 | { | |
462 | ts->nsec = cpu_to_le32(val); | |
463 | } | |
464 | ||
234b63a0 | 465 | static inline u32 btrfs_extent_refs(struct btrfs_extent_item *ei) |
cf27e1ee CM |
466 | { |
467 | return le32_to_cpu(ei->refs); | |
468 | } | |
469 | ||
234b63a0 | 470 | static inline void btrfs_set_extent_refs(struct btrfs_extent_item *ei, u32 val) |
cf27e1ee CM |
471 | { |
472 | ei->refs = cpu_to_le32(val); | |
473 | } | |
474 | ||
234b63a0 | 475 | static inline u64 btrfs_node_blockptr(struct btrfs_node *n, int nr) |
1d4f8a0c | 476 | { |
123abc88 | 477 | return le64_to_cpu(n->ptrs[nr].blockptr); |
1d4f8a0c CM |
478 | } |
479 | ||
234b63a0 CM |
480 | static inline void btrfs_set_node_blockptr(struct btrfs_node *n, int nr, |
481 | u64 val) | |
1d4f8a0c | 482 | { |
123abc88 | 483 | n->ptrs[nr].blockptr = cpu_to_le64(val); |
1d4f8a0c CM |
484 | } |
485 | ||
123abc88 | 486 | static inline u32 btrfs_item_offset(struct btrfs_item *item) |
0783fcfc | 487 | { |
123abc88 | 488 | return le32_to_cpu(item->offset); |
0783fcfc CM |
489 | } |
490 | ||
123abc88 | 491 | static inline void btrfs_set_item_offset(struct btrfs_item *item, u32 val) |
0783fcfc | 492 | { |
123abc88 | 493 | item->offset = cpu_to_le32(val); |
0783fcfc CM |
494 | } |
495 | ||
123abc88 | 496 | static inline u32 btrfs_item_end(struct btrfs_item *item) |
0783fcfc | 497 | { |
123abc88 | 498 | return le32_to_cpu(item->offset) + le16_to_cpu(item->size); |
0783fcfc CM |
499 | } |
500 | ||
501 | static inline u16 btrfs_item_size(struct btrfs_item *item) | |
502 | { | |
503 | return le16_to_cpu(item->size); | |
504 | } | |
505 | ||
506 | static inline void btrfs_set_item_size(struct btrfs_item *item, u16 val) | |
507 | { | |
508 | item->size = cpu_to_le16(val); | |
509 | } | |
510 | ||
1d4f6404 CM |
511 | static inline u16 btrfs_dir_flags(struct btrfs_dir_item *d) |
512 | { | |
513 | return le16_to_cpu(d->flags); | |
514 | } | |
515 | ||
516 | static inline void btrfs_set_dir_flags(struct btrfs_dir_item *d, u16 val) | |
517 | { | |
518 | d->flags = cpu_to_le16(val); | |
519 | } | |
520 | ||
521 | static inline u8 btrfs_dir_type(struct btrfs_dir_item *d) | |
522 | { | |
523 | return d->type; | |
524 | } | |
525 | ||
526 | static inline void btrfs_set_dir_type(struct btrfs_dir_item *d, u8 val) | |
527 | { | |
528 | d->type = val; | |
529 | } | |
530 | ||
a8a2ee0c CM |
531 | static inline u16 btrfs_dir_name_len(struct btrfs_dir_item *d) |
532 | { | |
533 | return le16_to_cpu(d->name_len); | |
534 | } | |
535 | ||
536 | static inline void btrfs_set_dir_name_len(struct btrfs_dir_item *d, u16 val) | |
1d4f6404 | 537 | { |
a8a2ee0c | 538 | d->name_len = cpu_to_le16(val); |
1d4f6404 CM |
539 | } |
540 | ||
e2fa7227 CM |
541 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
542 | struct btrfs_disk_key *disk) | |
543 | { | |
544 | cpu->offset = le64_to_cpu(disk->offset); | |
545 | cpu->flags = le32_to_cpu(disk->flags); | |
546 | cpu->objectid = le64_to_cpu(disk->objectid); | |
547 | } | |
548 | ||
549 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
550 | struct btrfs_key *cpu) | |
551 | { | |
552 | disk->offset = cpu_to_le64(cpu->offset); | |
553 | disk->flags = cpu_to_le32(cpu->flags); | |
554 | disk->objectid = cpu_to_le64(cpu->objectid); | |
555 | } | |
556 | ||
62e2749e | 557 | static inline u64 btrfs_disk_key_objectid(struct btrfs_disk_key *disk) |
e2fa7227 CM |
558 | { |
559 | return le64_to_cpu(disk->objectid); | |
560 | } | |
561 | ||
62e2749e CM |
562 | static inline void btrfs_set_disk_key_objectid(struct btrfs_disk_key *disk, |
563 | u64 val) | |
e2fa7227 CM |
564 | { |
565 | disk->objectid = cpu_to_le64(val); | |
566 | } | |
567 | ||
62e2749e | 568 | static inline u64 btrfs_disk_key_offset(struct btrfs_disk_key *disk) |
e2fa7227 CM |
569 | { |
570 | return le64_to_cpu(disk->offset); | |
571 | } | |
572 | ||
62e2749e CM |
573 | static inline void btrfs_set_disk_key_offset(struct btrfs_disk_key *disk, |
574 | u64 val) | |
e2fa7227 CM |
575 | { |
576 | disk->offset = cpu_to_le64(val); | |
577 | } | |
578 | ||
62e2749e | 579 | static inline u32 btrfs_disk_key_flags(struct btrfs_disk_key *disk) |
e2fa7227 CM |
580 | { |
581 | return le32_to_cpu(disk->flags); | |
582 | } | |
583 | ||
62e2749e CM |
584 | static inline void btrfs_set_disk_key_flags(struct btrfs_disk_key *disk, |
585 | u32 val) | |
e2fa7227 CM |
586 | { |
587 | disk->flags = cpu_to_le32(val); | |
588 | } | |
589 | ||
a429e513 | 590 | static inline u32 btrfs_disk_key_type(struct btrfs_disk_key *key) |
7fcde0e3 | 591 | { |
a429e513 | 592 | return le32_to_cpu(key->flags) >> BTRFS_KEY_TYPE_SHIFT; |
7fcde0e3 CM |
593 | } |
594 | ||
a429e513 CM |
595 | static inline void btrfs_set_disk_key_type(struct btrfs_disk_key *key, |
596 | u32 val) | |
7fcde0e3 | 597 | { |
a429e513 CM |
598 | u32 flags = btrfs_disk_key_flags(key); |
599 | BUG_ON(val >= BTRFS_KEY_TYPE_MAX); | |
600 | val = val << BTRFS_KEY_TYPE_SHIFT; | |
601 | flags = (flags & ~BTRFS_KEY_TYPE_MASK) | val; | |
602 | btrfs_set_disk_key_flags(key, flags); | |
7fcde0e3 CM |
603 | } |
604 | ||
62e2749e CM |
605 | static inline u32 btrfs_key_type(struct btrfs_key *key) |
606 | { | |
a429e513 | 607 | return key->flags >> BTRFS_KEY_TYPE_SHIFT; |
62e2749e CM |
608 | } |
609 | ||
a429e513 | 610 | static inline void btrfs_set_key_type(struct btrfs_key *key, u32 val) |
62e2749e | 611 | { |
a429e513 CM |
612 | BUG_ON(val >= BTRFS_KEY_TYPE_MAX); |
613 | val = val << BTRFS_KEY_TYPE_SHIFT; | |
614 | key->flags = (key->flags & ~(BTRFS_KEY_TYPE_MASK)) | val; | |
62e2749e CM |
615 | } |
616 | ||
bb492bb0 | 617 | static inline u64 btrfs_header_blocknr(struct btrfs_header *h) |
7518a238 | 618 | { |
bb492bb0 | 619 | return le64_to_cpu(h->blocknr); |
7518a238 CM |
620 | } |
621 | ||
bb492bb0 | 622 | static inline void btrfs_set_header_blocknr(struct btrfs_header *h, u64 blocknr) |
7518a238 | 623 | { |
bb492bb0 | 624 | h->blocknr = cpu_to_le64(blocknr); |
7518a238 CM |
625 | } |
626 | ||
7f5c1516 CM |
627 | static inline u64 btrfs_header_generation(struct btrfs_header *h) |
628 | { | |
629 | return le64_to_cpu(h->generation); | |
630 | } | |
631 | ||
632 | static inline void btrfs_set_header_generation(struct btrfs_header *h, | |
633 | u64 val) | |
634 | { | |
635 | h->generation = cpu_to_le64(val); | |
636 | } | |
637 | ||
bb492bb0 | 638 | static inline u16 btrfs_header_nritems(struct btrfs_header *h) |
7518a238 | 639 | { |
bb492bb0 | 640 | return le16_to_cpu(h->nritems); |
7518a238 CM |
641 | } |
642 | ||
bb492bb0 | 643 | static inline void btrfs_set_header_nritems(struct btrfs_header *h, u16 val) |
7518a238 | 644 | { |
bb492bb0 | 645 | h->nritems = cpu_to_le16(val); |
7518a238 CM |
646 | } |
647 | ||
bb492bb0 | 648 | static inline u16 btrfs_header_flags(struct btrfs_header *h) |
7518a238 | 649 | { |
bb492bb0 | 650 | return le16_to_cpu(h->flags); |
7518a238 CM |
651 | } |
652 | ||
bb492bb0 | 653 | static inline void btrfs_set_header_flags(struct btrfs_header *h, u16 val) |
7518a238 | 654 | { |
bb492bb0 | 655 | h->flags = cpu_to_le16(val); |
7518a238 CM |
656 | } |
657 | ||
bb492bb0 | 658 | static inline int btrfs_header_level(struct btrfs_header *h) |
7518a238 | 659 | { |
9a6f11ed | 660 | return h->level; |
7518a238 CM |
661 | } |
662 | ||
bb492bb0 | 663 | static inline void btrfs_set_header_level(struct btrfs_header *h, int level) |
7518a238 | 664 | { |
234b63a0 | 665 | BUG_ON(level > BTRFS_MAX_LEVEL); |
9a6f11ed | 666 | h->level = level; |
7518a238 CM |
667 | } |
668 | ||
234b63a0 | 669 | static inline int btrfs_is_leaf(struct btrfs_node *n) |
7518a238 CM |
670 | { |
671 | return (btrfs_header_level(&n->header) == 0); | |
672 | } | |
673 | ||
3768f368 CM |
674 | static inline u64 btrfs_root_blocknr(struct btrfs_root_item *item) |
675 | { | |
676 | return le64_to_cpu(item->blocknr); | |
677 | } | |
678 | ||
679 | static inline void btrfs_set_root_blocknr(struct btrfs_root_item *item, u64 val) | |
680 | { | |
681 | item->blocknr = cpu_to_le64(val); | |
682 | } | |
683 | ||
d6e4a428 CM |
684 | static inline u64 btrfs_root_dirid(struct btrfs_root_item *item) |
685 | { | |
686 | return le64_to_cpu(item->root_dirid); | |
687 | } | |
688 | ||
689 | static inline void btrfs_set_root_dirid(struct btrfs_root_item *item, u64 val) | |
690 | { | |
691 | item->root_dirid = cpu_to_le64(val); | |
692 | } | |
693 | ||
3768f368 CM |
694 | static inline u32 btrfs_root_refs(struct btrfs_root_item *item) |
695 | { | |
696 | return le32_to_cpu(item->refs); | |
697 | } | |
698 | ||
699 | static inline void btrfs_set_root_refs(struct btrfs_root_item *item, u32 val) | |
700 | { | |
701 | item->refs = cpu_to_le32(val); | |
702 | } | |
703 | ||
704 | static inline u64 btrfs_super_blocknr(struct btrfs_super_block *s) | |
705 | { | |
706 | return le64_to_cpu(s->blocknr); | |
707 | } | |
708 | ||
709 | static inline void btrfs_set_super_blocknr(struct btrfs_super_block *s, u64 val) | |
710 | { | |
711 | s->blocknr = cpu_to_le64(val); | |
712 | } | |
713 | ||
0f7d52f4 CM |
714 | static inline u64 btrfs_super_generation(struct btrfs_super_block *s) |
715 | { | |
716 | return le64_to_cpu(s->generation); | |
717 | } | |
718 | ||
719 | static inline void btrfs_set_super_generation(struct btrfs_super_block *s, | |
720 | u64 val) | |
721 | { | |
722 | s->generation = cpu_to_le64(val); | |
723 | } | |
724 | ||
3768f368 CM |
725 | static inline u64 btrfs_super_root(struct btrfs_super_block *s) |
726 | { | |
727 | return le64_to_cpu(s->root); | |
728 | } | |
729 | ||
730 | static inline void btrfs_set_super_root(struct btrfs_super_block *s, u64 val) | |
731 | { | |
732 | s->root = cpu_to_le64(val); | |
733 | } | |
734 | ||
735 | static inline u64 btrfs_super_total_blocks(struct btrfs_super_block *s) | |
736 | { | |
737 | return le64_to_cpu(s->total_blocks); | |
738 | } | |
739 | ||
740 | static inline void btrfs_set_super_total_blocks(struct btrfs_super_block *s, | |
741 | u64 val) | |
742 | { | |
743 | s->total_blocks = cpu_to_le64(val); | |
744 | } | |
745 | ||
746 | static inline u64 btrfs_super_blocks_used(struct btrfs_super_block *s) | |
747 | { | |
748 | return le64_to_cpu(s->blocks_used); | |
749 | } | |
750 | ||
751 | static inline void btrfs_set_super_blocks_used(struct btrfs_super_block *s, | |
752 | u64 val) | |
753 | { | |
754 | s->blocks_used = cpu_to_le64(val); | |
755 | } | |
756 | ||
123abc88 | 757 | static inline u32 btrfs_super_blocksize(struct btrfs_super_block *s) |
3768f368 | 758 | { |
123abc88 | 759 | return le32_to_cpu(s->blocksize); |
3768f368 CM |
760 | } |
761 | ||
762 | static inline void btrfs_set_super_blocksize(struct btrfs_super_block *s, | |
123abc88 CM |
763 | u32 val) |
764 | { | |
765 | s->blocksize = cpu_to_le32(val); | |
766 | } | |
767 | ||
2e635a27 CM |
768 | static inline u64 btrfs_super_root_dir(struct btrfs_super_block *s) |
769 | { | |
770 | return le64_to_cpu(s->root_dir_objectid); | |
771 | } | |
772 | ||
773 | static inline void btrfs_set_super_root_dir(struct btrfs_super_block *s, u64 | |
774 | val) | |
775 | { | |
776 | s->root_dir_objectid = cpu_to_le64(val); | |
777 | } | |
778 | ||
b4100d64 CM |
779 | static inline u64 btrfs_super_last_device_id(struct btrfs_super_block *s) |
780 | { | |
781 | return le64_to_cpu(s->last_device_id); | |
782 | } | |
783 | ||
784 | static inline void btrfs_set_super_last_device_id(struct btrfs_super_block *s, | |
785 | u64 val) | |
786 | { | |
787 | s->last_device_id = cpu_to_le64(val); | |
788 | } | |
789 | ||
790 | static inline u64 btrfs_super_device_id(struct btrfs_super_block *s) | |
791 | { | |
792 | return le64_to_cpu(s->device_id); | |
793 | } | |
794 | ||
795 | static inline void btrfs_set_super_device_id(struct btrfs_super_block *s, | |
796 | u64 val) | |
797 | { | |
798 | s->device_id = cpu_to_le64(val); | |
799 | } | |
800 | ||
0bd93ba0 CM |
801 | static inline u64 btrfs_super_device_block_start(struct btrfs_super_block *s) |
802 | { | |
803 | return le64_to_cpu(s->device_block_start); | |
804 | } | |
805 | ||
806 | static inline void btrfs_set_super_device_block_start(struct btrfs_super_block | |
807 | *s, u64 val) | |
808 | { | |
809 | s->device_block_start = cpu_to_le64(val); | |
810 | } | |
811 | ||
812 | static inline u64 btrfs_super_device_num_blocks(struct btrfs_super_block *s) | |
813 | { | |
814 | return le64_to_cpu(s->device_num_blocks); | |
815 | } | |
816 | ||
817 | static inline void btrfs_set_super_device_num_blocks(struct btrfs_super_block | |
818 | *s, u64 val) | |
819 | { | |
820 | s->device_num_blocks = cpu_to_le64(val); | |
821 | } | |
822 | ||
823 | static inline u64 btrfs_super_device_root(struct btrfs_super_block *s) | |
824 | { | |
825 | return le64_to_cpu(s->device_root); | |
826 | } | |
827 | ||
828 | static inline void btrfs_set_super_device_root(struct btrfs_super_block | |
829 | *s, u64 val) | |
830 | { | |
831 | s->device_root = cpu_to_le64(val); | |
832 | } | |
833 | ||
834 | ||
123abc88 | 835 | static inline u8 *btrfs_leaf_data(struct btrfs_leaf *l) |
3768f368 | 836 | { |
123abc88 | 837 | return (u8 *)l->items; |
3768f368 | 838 | } |
9f5fae2f | 839 | |
236454df CM |
840 | static inline int btrfs_file_extent_type(struct btrfs_file_extent_item *e) |
841 | { | |
842 | return e->type; | |
843 | } | |
844 | static inline void btrfs_set_file_extent_type(struct btrfs_file_extent_item *e, | |
845 | u8 val) | |
846 | { | |
847 | e->type = val; | |
848 | } | |
849 | ||
850 | static inline char *btrfs_file_extent_inline_start(struct | |
851 | btrfs_file_extent_item *e) | |
852 | { | |
853 | return (char *)(&e->disk_blocknr); | |
854 | } | |
855 | ||
856 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
857 | { | |
858 | return (unsigned long)(&((struct | |
859 | btrfs_file_extent_item *)NULL)->disk_blocknr) + datasize; | |
860 | } | |
861 | ||
862 | static inline u32 btrfs_file_extent_inline_len(struct btrfs_item *e) | |
863 | { | |
864 | struct btrfs_file_extent_item *fe = NULL; | |
865 | return btrfs_item_size(e) - (unsigned long)(&fe->disk_blocknr); | |
866 | } | |
867 | ||
9f5fae2f CM |
868 | static inline u64 btrfs_file_extent_disk_blocknr(struct btrfs_file_extent_item |
869 | *e) | |
870 | { | |
871 | return le64_to_cpu(e->disk_blocknr); | |
872 | } | |
873 | ||
874 | static inline void btrfs_set_file_extent_disk_blocknr(struct | |
875 | btrfs_file_extent_item | |
876 | *e, u64 val) | |
877 | { | |
878 | e->disk_blocknr = cpu_to_le64(val); | |
879 | } | |
880 | ||
71951f35 CM |
881 | static inline u64 btrfs_file_extent_generation(struct btrfs_file_extent_item *e) |
882 | { | |
883 | return le64_to_cpu(e->generation); | |
884 | } | |
885 | ||
886 | static inline void btrfs_set_file_extent_generation(struct | |
887 | btrfs_file_extent_item *e, | |
888 | u64 val) | |
889 | { | |
890 | e->generation = cpu_to_le64(val); | |
891 | } | |
892 | ||
9f5fae2f CM |
893 | static inline u64 btrfs_file_extent_disk_num_blocks(struct |
894 | btrfs_file_extent_item *e) | |
895 | { | |
896 | return le64_to_cpu(e->disk_num_blocks); | |
897 | } | |
898 | ||
899 | static inline void btrfs_set_file_extent_disk_num_blocks(struct | |
900 | btrfs_file_extent_item | |
901 | *e, u64 val) | |
902 | { | |
903 | e->disk_num_blocks = cpu_to_le64(val); | |
904 | } | |
905 | ||
906 | static inline u64 btrfs_file_extent_offset(struct btrfs_file_extent_item *e) | |
907 | { | |
908 | return le64_to_cpu(e->offset); | |
909 | } | |
910 | ||
911 | static inline void btrfs_set_file_extent_offset(struct btrfs_file_extent_item | |
912 | *e, u64 val) | |
913 | { | |
914 | e->offset = cpu_to_le64(val); | |
915 | } | |
916 | ||
917 | static inline u64 btrfs_file_extent_num_blocks(struct btrfs_file_extent_item | |
918 | *e) | |
919 | { | |
920 | return le64_to_cpu(e->num_blocks); | |
921 | } | |
922 | ||
923 | static inline void btrfs_set_file_extent_num_blocks(struct | |
924 | btrfs_file_extent_item *e, | |
925 | u64 val) | |
926 | { | |
927 | e->num_blocks = cpu_to_le64(val); | |
928 | } | |
929 | ||
0bd93ba0 CM |
930 | static inline u16 btrfs_device_pathlen(struct btrfs_device_item *d) |
931 | { | |
932 | return le16_to_cpu(d->pathlen); | |
933 | } | |
934 | ||
935 | static inline void btrfs_set_device_pathlen(struct btrfs_device_item *d, | |
936 | u16 val) | |
937 | { | |
938 | d->pathlen = cpu_to_le16(val); | |
939 | } | |
940 | ||
b4100d64 CM |
941 | static inline u64 btrfs_device_id(struct btrfs_device_item *d) |
942 | { | |
943 | return le64_to_cpu(d->device_id); | |
944 | } | |
945 | ||
946 | static inline void btrfs_set_device_id(struct btrfs_device_item *d, | |
947 | u64 val) | |
948 | { | |
949 | d->device_id = cpu_to_le64(val); | |
950 | } | |
951 | ||
e20d96d6 CM |
952 | static inline struct btrfs_root *btrfs_sb(struct super_block *sb) |
953 | { | |
954 | return sb->s_fs_info; | |
955 | } | |
956 | ||
d6025579 CM |
957 | static inline void btrfs_check_bounds(void *vptr, size_t len, |
958 | void *vcontainer, size_t container_len) | |
959 | { | |
960 | char *ptr = vptr; | |
961 | char *container = vcontainer; | |
962 | WARN_ON(ptr < container); | |
963 | WARN_ON(ptr + len > container + container_len); | |
964 | } | |
965 | ||
966 | static inline void btrfs_memcpy(struct btrfs_root *root, | |
967 | void *dst_block, | |
968 | void *dst, const void *src, size_t nr) | |
969 | { | |
970 | btrfs_check_bounds(dst, nr, dst_block, root->fs_info->sb->s_blocksize); | |
971 | memcpy(dst, src, nr); | |
972 | } | |
973 | ||
974 | static inline void btrfs_memmove(struct btrfs_root *root, | |
975 | void *dst_block, | |
976 | void *dst, void *src, size_t nr) | |
977 | { | |
978 | btrfs_check_bounds(dst, nr, dst_block, root->fs_info->sb->s_blocksize); | |
979 | memmove(dst, src, nr); | |
980 | } | |
981 | ||
982 | static inline void btrfs_mark_buffer_dirty(struct buffer_head *bh) | |
983 | { | |
984 | WARN_ON(!atomic_read(&bh->b_count)); | |
985 | mark_buffer_dirty(bh); | |
986 | } | |
987 | ||
4beb1b8b CM |
988 | /* helper function to cast into the data area of the leaf. */ |
989 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 CM |
990 | ((type *)(btrfs_leaf_data(leaf) + \ |
991 | btrfs_item_offset((leaf)->items + (slot)))) | |
4beb1b8b | 992 | |
b18c6685 | 993 | /* extent-tree.c */ |
c5739bba CM |
994 | int btrfs_inc_root_ref(struct btrfs_trans_handle *trans, |
995 | struct btrfs_root *root); | |
e20d96d6 | 996 | struct buffer_head *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
e089f05c | 997 | struct btrfs_root *root); |
dee26a9f CM |
998 | int btrfs_alloc_extent(struct btrfs_trans_handle *trans, struct btrfs_root |
999 | *root, u64 num_blocks, u64 search_start, u64 | |
d0dbc624 | 1000 | search_end, struct btrfs_key *ins); |
e089f05c | 1001 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e20d96d6 | 1002 | struct buffer_head *buf); |
e089f05c CM |
1003 | int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root |
1004 | *root, u64 blocknr, u64 num_blocks, int pin); | |
dee26a9f CM |
1005 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, struct |
1006 | btrfs_root *root); | |
b18c6685 CM |
1007 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
1008 | struct btrfs_root *root, | |
1009 | u64 blocknr, u64 num_blocks); | |
dee26a9f | 1010 | /* ctree.c */ |
6567e837 CM |
1011 | int btrfs_extend_item(struct btrfs_trans_handle *trans, struct btrfs_root |
1012 | *root, struct btrfs_path *path, u32 data_size); | |
b18c6685 CM |
1013 | int btrfs_truncate_item(struct btrfs_trans_handle *trans, |
1014 | struct btrfs_root *root, | |
1015 | struct btrfs_path *path, | |
1016 | u32 new_size); | |
e089f05c CM |
1017 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
1018 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
1019 | ins_len, int cow); | |
234b63a0 | 1020 | void btrfs_release_path(struct btrfs_root *root, struct btrfs_path *p); |
2c90e5d6 CM |
1021 | struct btrfs_path *btrfs_alloc_path(void); |
1022 | void btrfs_free_path(struct btrfs_path *p); | |
234b63a0 | 1023 | void btrfs_init_path(struct btrfs_path *p); |
e089f05c CM |
1024 | int btrfs_del_item(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1025 | struct btrfs_path *path); | |
1026 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root | |
1027 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
1028 | int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, struct btrfs_root | |
1029 | *root, struct btrfs_path *path, struct btrfs_key | |
1030 | *cpu_key, u32 data_size); | |
234b63a0 | 1031 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
123abc88 | 1032 | int btrfs_leaf_free_space(struct btrfs_root *root, struct btrfs_leaf *leaf); |
e089f05c | 1033 | int btrfs_drop_snapshot(struct btrfs_trans_handle *trans, struct btrfs_root |
e20d96d6 | 1034 | *root, struct buffer_head *snap); |
dee26a9f | 1035 | /* root-item.c */ |
e089f05c CM |
1036 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1037 | struct btrfs_key *key); | |
1038 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1039 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1040 | *item); | |
1041 | int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1042 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1043 | *item); | |
1044 | int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct | |
1045 | btrfs_root_item *item, struct btrfs_key *key); | |
dee26a9f | 1046 | /* dir-item.c */ |
e089f05c | 1047 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
1048 | *root, const char *name, int name_len, u64 dir, |
1049 | struct btrfs_key *location, u8 type); | |
7e38180e CM |
1050 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
1051 | struct btrfs_root *root, | |
1052 | struct btrfs_path *path, u64 dir, | |
1053 | const char *name, int name_len, | |
1054 | int mod); | |
1055 | struct btrfs_dir_item * | |
1056 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
1057 | struct btrfs_root *root, | |
1058 | struct btrfs_path *path, u64 dir, | |
1059 | u64 objectid, const char *name, int name_len, | |
1060 | int mod); | |
1061 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, | |
1062 | struct btrfs_path *path, | |
7f5c1516 | 1063 | const char *name, int name_len); |
7e38180e CM |
1064 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
1065 | struct btrfs_root *root, | |
1066 | struct btrfs_path *path, | |
1067 | struct btrfs_dir_item *di); | |
dee26a9f | 1068 | /* inode-map.c */ |
9f5fae2f CM |
1069 | int btrfs_find_free_objectid(struct btrfs_trans_handle *trans, |
1070 | struct btrfs_root *fs_root, | |
1071 | u64 dirid, u64 *objectid); | |
5be6f7f1 CM |
1072 | int btrfs_find_highest_inode(struct btrfs_root *fs_root, u64 *objectid); |
1073 | ||
dee26a9f | 1074 | /* inode-item.c */ |
293ffd5f CM |
1075 | int btrfs_insert_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
1076 | *root, u64 objectid, struct btrfs_inode_item | |
1077 | *inode_item); | |
1078 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root | |
d6e4a428 CM |
1079 | *root, struct btrfs_path *path, |
1080 | struct btrfs_key *location, int mod); | |
dee26a9f CM |
1081 | |
1082 | /* file-item.c */ | |
b18c6685 | 1083 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
dee26a9f | 1084 | struct btrfs_root *root, |
b18c6685 CM |
1085 | u64 objectid, u64 pos, u64 offset, |
1086 | u64 num_blocks); | |
dee26a9f CM |
1087 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
1088 | struct btrfs_root *root, | |
1089 | struct btrfs_path *path, u64 objectid, | |
9773a788 | 1090 | u64 blocknr, int mod); |
f254e52c CM |
1091 | int btrfs_csum_file_block(struct btrfs_trans_handle *trans, |
1092 | struct btrfs_root *root, | |
1093 | u64 objectid, u64 offset, | |
1094 | char *data, size_t len); | |
1095 | int btrfs_csum_verify_file_block(struct btrfs_root *root, | |
1096 | u64 objectid, u64 offset, | |
1097 | char *data, size_t len); | |
b18c6685 CM |
1098 | struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans, |
1099 | struct btrfs_root *root, | |
1100 | struct btrfs_path *path, | |
1101 | u64 objectid, u64 offset, | |
1102 | int cow); | |
d6e4a428 CM |
1103 | /* super.c */ |
1104 | extern struct subsystem btrfs_subsys; | |
1105 | ||
eb60ceac | 1106 | #endif |