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; |
8fd17795 | 259 | struct list_head trans_list; |
87cbda5c CM |
260 | struct crypto_hash *hash_tfm; |
261 | spinlock_t hash_lock; | |
e66f709b | 262 | int do_barriers; |
d6e4a428 | 263 | struct kobject kobj; |
9f5fae2f CM |
264 | }; |
265 | ||
266 | /* | |
267 | * in ram representation of the tree. extent_root is used for all allocations | |
268 | * and for the extent tree extent_root root. current_insert is used | |
269 | * only for the extent tree. | |
270 | */ | |
271 | struct btrfs_root { | |
e20d96d6 CM |
272 | struct buffer_head *node; |
273 | struct buffer_head *commit_root; | |
62e2749e CM |
274 | struct btrfs_root_item root_item; |
275 | struct btrfs_key root_key; | |
9f5fae2f | 276 | struct btrfs_fs_info *fs_info; |
0f7d52f4 CM |
277 | struct inode *inode; |
278 | u64 objectid; | |
279 | u64 last_trans; | |
62e2749e | 280 | u32 blocksize; |
9f5fae2f CM |
281 | int ref_cows; |
282 | u32 type; | |
1b05da2e CM |
283 | u64 highest_inode; |
284 | u64 last_inode_alloc; | |
62e2749e CM |
285 | }; |
286 | ||
62e2749e CM |
287 | /* the lower bits in the key flags defines the item type */ |
288 | #define BTRFS_KEY_TYPE_MAX 256 | |
a429e513 CM |
289 | #define BTRFS_KEY_TYPE_SHIFT 24 |
290 | #define BTRFS_KEY_TYPE_MASK (((u32)BTRFS_KEY_TYPE_MAX - 1) << \ | |
291 | BTRFS_KEY_TYPE_SHIFT) | |
1e1d2701 CM |
292 | |
293 | /* | |
294 | * inode items have the data typically returned from stat and store other | |
295 | * info about object characteristics. There is one for every file and dir in | |
296 | * the FS | |
297 | */ | |
62e2749e | 298 | #define BTRFS_INODE_ITEM_KEY 1 |
1e1d2701 CM |
299 | |
300 | /* | |
301 | * dir items are the name -> inode pointers in a directory. There is one | |
302 | * for every name in a directory. | |
303 | */ | |
62e2749e | 304 | #define BTRFS_DIR_ITEM_KEY 2 |
bae45de0 | 305 | #define BTRFS_DIR_INDEX_KEY 3 |
1e1d2701 CM |
306 | /* |
307 | * inline data is file data that fits in the btree. | |
308 | */ | |
bae45de0 | 309 | #define BTRFS_INLINE_DATA_KEY 4 |
1e1d2701 CM |
310 | /* |
311 | * extent data is for data that can't fit in the btree. It points to | |
312 | * a (hopefully) huge chunk of disk | |
313 | */ | |
bae45de0 | 314 | #define BTRFS_EXTENT_DATA_KEY 5 |
f254e52c CM |
315 | /* |
316 | * csum items have the checksums for data in the extents | |
317 | */ | |
bae45de0 | 318 | #define BTRFS_CSUM_ITEM_KEY 6 |
f254e52c | 319 | |
1e1d2701 CM |
320 | /* |
321 | * root items point to tree roots. There are typically in the root | |
322 | * tree used by the super block to find all the other trees | |
323 | */ | |
bae45de0 | 324 | #define BTRFS_ROOT_ITEM_KEY 7 |
1e1d2701 CM |
325 | /* |
326 | * extent items are in the extent map tree. These record which blocks | |
327 | * are used, and how many references there are to each block | |
328 | */ | |
bae45de0 | 329 | #define BTRFS_EXTENT_ITEM_KEY 8 |
9f5fae2f | 330 | |
0bd93ba0 CM |
331 | /* |
332 | * dev items list the devices that make up the FS | |
333 | */ | |
334 | #define BTRFS_DEV_ITEM_KEY 9 | |
335 | ||
1e1d2701 CM |
336 | /* |
337 | * string items are for debugging. They just store a short string of | |
338 | * data in the FS | |
339 | */ | |
0bd93ba0 | 340 | #define BTRFS_STRING_ITEM_KEY 10 |
1e1d2701 CM |
341 | |
342 | static inline u64 btrfs_inode_generation(struct btrfs_inode_item *i) | |
343 | { | |
344 | return le64_to_cpu(i->generation); | |
345 | } | |
346 | ||
347 | static inline void btrfs_set_inode_generation(struct btrfs_inode_item *i, | |
348 | u64 val) | |
349 | { | |
350 | i->generation = cpu_to_le64(val); | |
351 | } | |
352 | ||
353 | static inline u64 btrfs_inode_size(struct btrfs_inode_item *i) | |
354 | { | |
355 | return le64_to_cpu(i->size); | |
356 | } | |
357 | ||
358 | static inline void btrfs_set_inode_size(struct btrfs_inode_item *i, u64 val) | |
359 | { | |
360 | i->size = cpu_to_le64(val); | |
361 | } | |
362 | ||
363 | static inline u64 btrfs_inode_nblocks(struct btrfs_inode_item *i) | |
364 | { | |
365 | return le64_to_cpu(i->nblocks); | |
366 | } | |
367 | ||
368 | static inline void btrfs_set_inode_nblocks(struct btrfs_inode_item *i, u64 val) | |
369 | { | |
370 | i->nblocks = cpu_to_le64(val); | |
371 | } | |
372 | ||
373 | static inline u32 btrfs_inode_nlink(struct btrfs_inode_item *i) | |
374 | { | |
375 | return le32_to_cpu(i->nlink); | |
376 | } | |
377 | ||
378 | static inline void btrfs_set_inode_nlink(struct btrfs_inode_item *i, u32 val) | |
379 | { | |
380 | i->nlink = cpu_to_le32(val); | |
381 | } | |
382 | ||
383 | static inline u32 btrfs_inode_uid(struct btrfs_inode_item *i) | |
384 | { | |
385 | return le32_to_cpu(i->uid); | |
386 | } | |
387 | ||
388 | static inline void btrfs_set_inode_uid(struct btrfs_inode_item *i, u32 val) | |
389 | { | |
390 | i->uid = cpu_to_le32(val); | |
391 | } | |
392 | ||
393 | static inline u32 btrfs_inode_gid(struct btrfs_inode_item *i) | |
394 | { | |
395 | return le32_to_cpu(i->gid); | |
396 | } | |
397 | ||
398 | static inline void btrfs_set_inode_gid(struct btrfs_inode_item *i, u32 val) | |
399 | { | |
400 | i->gid = cpu_to_le32(val); | |
401 | } | |
402 | ||
403 | static inline u32 btrfs_inode_mode(struct btrfs_inode_item *i) | |
404 | { | |
405 | return le32_to_cpu(i->mode); | |
406 | } | |
407 | ||
408 | static inline void btrfs_set_inode_mode(struct btrfs_inode_item *i, u32 val) | |
409 | { | |
410 | i->mode = cpu_to_le32(val); | |
411 | } | |
412 | ||
413 | static inline u32 btrfs_inode_rdev(struct btrfs_inode_item *i) | |
414 | { | |
415 | return le32_to_cpu(i->rdev); | |
416 | } | |
417 | ||
418 | static inline void btrfs_set_inode_rdev(struct btrfs_inode_item *i, u32 val) | |
419 | { | |
420 | i->rdev = cpu_to_le32(val); | |
421 | } | |
422 | ||
423 | static inline u16 btrfs_inode_flags(struct btrfs_inode_item *i) | |
424 | { | |
425 | return le16_to_cpu(i->flags); | |
426 | } | |
427 | ||
428 | static inline void btrfs_set_inode_flags(struct btrfs_inode_item *i, u16 val) | |
429 | { | |
430 | i->flags = cpu_to_le16(val); | |
431 | } | |
432 | ||
433 | static inline u16 btrfs_inode_compat_flags(struct btrfs_inode_item *i) | |
434 | { | |
435 | return le16_to_cpu(i->compat_flags); | |
436 | } | |
437 | ||
438 | static inline void btrfs_set_inode_compat_flags(struct btrfs_inode_item *i, | |
439 | u16 val) | |
440 | { | |
441 | i->compat_flags = cpu_to_le16(val); | |
442 | } | |
443 | ||
f254e52c | 444 | static inline u64 btrfs_timespec_sec(struct btrfs_inode_timespec *ts) |
e20d96d6 | 445 | { |
f254e52c | 446 | return le64_to_cpu(ts->sec); |
e20d96d6 CM |
447 | } |
448 | ||
449 | static inline void btrfs_set_timespec_sec(struct btrfs_inode_timespec *ts, | |
f254e52c | 450 | u64 val) |
e20d96d6 | 451 | { |
f254e52c | 452 | ts->sec = cpu_to_le64(val); |
e20d96d6 CM |
453 | } |
454 | ||
455 | static inline u32 btrfs_timespec_nsec(struct btrfs_inode_timespec *ts) | |
456 | { | |
457 | return le32_to_cpu(ts->nsec); | |
458 | } | |
459 | ||
460 | static inline void btrfs_set_timespec_nsec(struct btrfs_inode_timespec *ts, | |
461 | u32 val) | |
462 | { | |
463 | ts->nsec = cpu_to_le32(val); | |
464 | } | |
465 | ||
234b63a0 | 466 | static inline u32 btrfs_extent_refs(struct btrfs_extent_item *ei) |
cf27e1ee CM |
467 | { |
468 | return le32_to_cpu(ei->refs); | |
469 | } | |
470 | ||
234b63a0 | 471 | static inline void btrfs_set_extent_refs(struct btrfs_extent_item *ei, u32 val) |
cf27e1ee CM |
472 | { |
473 | ei->refs = cpu_to_le32(val); | |
474 | } | |
475 | ||
234b63a0 | 476 | static inline u64 btrfs_node_blockptr(struct btrfs_node *n, int nr) |
1d4f8a0c | 477 | { |
123abc88 | 478 | return le64_to_cpu(n->ptrs[nr].blockptr); |
1d4f8a0c CM |
479 | } |
480 | ||
234b63a0 CM |
481 | static inline void btrfs_set_node_blockptr(struct btrfs_node *n, int nr, |
482 | u64 val) | |
1d4f8a0c | 483 | { |
123abc88 | 484 | n->ptrs[nr].blockptr = cpu_to_le64(val); |
1d4f8a0c CM |
485 | } |
486 | ||
123abc88 | 487 | static inline u32 btrfs_item_offset(struct btrfs_item *item) |
0783fcfc | 488 | { |
123abc88 | 489 | return le32_to_cpu(item->offset); |
0783fcfc CM |
490 | } |
491 | ||
123abc88 | 492 | static inline void btrfs_set_item_offset(struct btrfs_item *item, u32 val) |
0783fcfc | 493 | { |
123abc88 | 494 | item->offset = cpu_to_le32(val); |
0783fcfc CM |
495 | } |
496 | ||
123abc88 | 497 | static inline u32 btrfs_item_end(struct btrfs_item *item) |
0783fcfc | 498 | { |
123abc88 | 499 | return le32_to_cpu(item->offset) + le16_to_cpu(item->size); |
0783fcfc CM |
500 | } |
501 | ||
502 | static inline u16 btrfs_item_size(struct btrfs_item *item) | |
503 | { | |
504 | return le16_to_cpu(item->size); | |
505 | } | |
506 | ||
507 | static inline void btrfs_set_item_size(struct btrfs_item *item, u16 val) | |
508 | { | |
509 | item->size = cpu_to_le16(val); | |
510 | } | |
511 | ||
1d4f6404 CM |
512 | static inline u16 btrfs_dir_flags(struct btrfs_dir_item *d) |
513 | { | |
514 | return le16_to_cpu(d->flags); | |
515 | } | |
516 | ||
517 | static inline void btrfs_set_dir_flags(struct btrfs_dir_item *d, u16 val) | |
518 | { | |
519 | d->flags = cpu_to_le16(val); | |
520 | } | |
521 | ||
522 | static inline u8 btrfs_dir_type(struct btrfs_dir_item *d) | |
523 | { | |
524 | return d->type; | |
525 | } | |
526 | ||
527 | static inline void btrfs_set_dir_type(struct btrfs_dir_item *d, u8 val) | |
528 | { | |
529 | d->type = val; | |
530 | } | |
531 | ||
a8a2ee0c CM |
532 | static inline u16 btrfs_dir_name_len(struct btrfs_dir_item *d) |
533 | { | |
534 | return le16_to_cpu(d->name_len); | |
535 | } | |
536 | ||
537 | static inline void btrfs_set_dir_name_len(struct btrfs_dir_item *d, u16 val) | |
1d4f6404 | 538 | { |
a8a2ee0c | 539 | d->name_len = cpu_to_le16(val); |
1d4f6404 CM |
540 | } |
541 | ||
e2fa7227 CM |
542 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
543 | struct btrfs_disk_key *disk) | |
544 | { | |
545 | cpu->offset = le64_to_cpu(disk->offset); | |
546 | cpu->flags = le32_to_cpu(disk->flags); | |
547 | cpu->objectid = le64_to_cpu(disk->objectid); | |
548 | } | |
549 | ||
550 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
551 | struct btrfs_key *cpu) | |
552 | { | |
553 | disk->offset = cpu_to_le64(cpu->offset); | |
554 | disk->flags = cpu_to_le32(cpu->flags); | |
555 | disk->objectid = cpu_to_le64(cpu->objectid); | |
556 | } | |
557 | ||
62e2749e | 558 | static inline u64 btrfs_disk_key_objectid(struct btrfs_disk_key *disk) |
e2fa7227 CM |
559 | { |
560 | return le64_to_cpu(disk->objectid); | |
561 | } | |
562 | ||
62e2749e CM |
563 | static inline void btrfs_set_disk_key_objectid(struct btrfs_disk_key *disk, |
564 | u64 val) | |
e2fa7227 CM |
565 | { |
566 | disk->objectid = cpu_to_le64(val); | |
567 | } | |
568 | ||
62e2749e | 569 | static inline u64 btrfs_disk_key_offset(struct btrfs_disk_key *disk) |
e2fa7227 CM |
570 | { |
571 | return le64_to_cpu(disk->offset); | |
572 | } | |
573 | ||
62e2749e CM |
574 | static inline void btrfs_set_disk_key_offset(struct btrfs_disk_key *disk, |
575 | u64 val) | |
e2fa7227 CM |
576 | { |
577 | disk->offset = cpu_to_le64(val); | |
578 | } | |
579 | ||
62e2749e | 580 | static inline u32 btrfs_disk_key_flags(struct btrfs_disk_key *disk) |
e2fa7227 CM |
581 | { |
582 | return le32_to_cpu(disk->flags); | |
583 | } | |
584 | ||
62e2749e CM |
585 | static inline void btrfs_set_disk_key_flags(struct btrfs_disk_key *disk, |
586 | u32 val) | |
e2fa7227 CM |
587 | { |
588 | disk->flags = cpu_to_le32(val); | |
589 | } | |
590 | ||
a429e513 | 591 | static inline u32 btrfs_disk_key_type(struct btrfs_disk_key *key) |
7fcde0e3 | 592 | { |
a429e513 | 593 | return le32_to_cpu(key->flags) >> BTRFS_KEY_TYPE_SHIFT; |
7fcde0e3 CM |
594 | } |
595 | ||
a429e513 CM |
596 | static inline void btrfs_set_disk_key_type(struct btrfs_disk_key *key, |
597 | u32 val) | |
7fcde0e3 | 598 | { |
a429e513 CM |
599 | u32 flags = btrfs_disk_key_flags(key); |
600 | BUG_ON(val >= BTRFS_KEY_TYPE_MAX); | |
601 | val = val << BTRFS_KEY_TYPE_SHIFT; | |
602 | flags = (flags & ~BTRFS_KEY_TYPE_MASK) | val; | |
603 | btrfs_set_disk_key_flags(key, flags); | |
7fcde0e3 CM |
604 | } |
605 | ||
62e2749e CM |
606 | static inline u32 btrfs_key_type(struct btrfs_key *key) |
607 | { | |
a429e513 | 608 | return key->flags >> BTRFS_KEY_TYPE_SHIFT; |
62e2749e CM |
609 | } |
610 | ||
a429e513 | 611 | static inline void btrfs_set_key_type(struct btrfs_key *key, u32 val) |
62e2749e | 612 | { |
a429e513 CM |
613 | BUG_ON(val >= BTRFS_KEY_TYPE_MAX); |
614 | val = val << BTRFS_KEY_TYPE_SHIFT; | |
615 | key->flags = (key->flags & ~(BTRFS_KEY_TYPE_MASK)) | val; | |
62e2749e CM |
616 | } |
617 | ||
bb492bb0 | 618 | static inline u64 btrfs_header_blocknr(struct btrfs_header *h) |
7518a238 | 619 | { |
bb492bb0 | 620 | return le64_to_cpu(h->blocknr); |
7518a238 CM |
621 | } |
622 | ||
bb492bb0 | 623 | static inline void btrfs_set_header_blocknr(struct btrfs_header *h, u64 blocknr) |
7518a238 | 624 | { |
bb492bb0 | 625 | h->blocknr = cpu_to_le64(blocknr); |
7518a238 CM |
626 | } |
627 | ||
7f5c1516 CM |
628 | static inline u64 btrfs_header_generation(struct btrfs_header *h) |
629 | { | |
630 | return le64_to_cpu(h->generation); | |
631 | } | |
632 | ||
633 | static inline void btrfs_set_header_generation(struct btrfs_header *h, | |
634 | u64 val) | |
635 | { | |
636 | h->generation = cpu_to_le64(val); | |
637 | } | |
638 | ||
bb492bb0 | 639 | static inline u16 btrfs_header_nritems(struct btrfs_header *h) |
7518a238 | 640 | { |
bb492bb0 | 641 | return le16_to_cpu(h->nritems); |
7518a238 CM |
642 | } |
643 | ||
bb492bb0 | 644 | static inline void btrfs_set_header_nritems(struct btrfs_header *h, u16 val) |
7518a238 | 645 | { |
bb492bb0 | 646 | h->nritems = cpu_to_le16(val); |
7518a238 CM |
647 | } |
648 | ||
bb492bb0 | 649 | static inline u16 btrfs_header_flags(struct btrfs_header *h) |
7518a238 | 650 | { |
bb492bb0 | 651 | return le16_to_cpu(h->flags); |
7518a238 CM |
652 | } |
653 | ||
bb492bb0 | 654 | static inline void btrfs_set_header_flags(struct btrfs_header *h, u16 val) |
7518a238 | 655 | { |
bb492bb0 | 656 | h->flags = cpu_to_le16(val); |
7518a238 CM |
657 | } |
658 | ||
bb492bb0 | 659 | static inline int btrfs_header_level(struct btrfs_header *h) |
7518a238 | 660 | { |
9a6f11ed | 661 | return h->level; |
7518a238 CM |
662 | } |
663 | ||
bb492bb0 | 664 | static inline void btrfs_set_header_level(struct btrfs_header *h, int level) |
7518a238 | 665 | { |
234b63a0 | 666 | BUG_ON(level > BTRFS_MAX_LEVEL); |
9a6f11ed | 667 | h->level = level; |
7518a238 CM |
668 | } |
669 | ||
234b63a0 | 670 | static inline int btrfs_is_leaf(struct btrfs_node *n) |
7518a238 CM |
671 | { |
672 | return (btrfs_header_level(&n->header) == 0); | |
673 | } | |
674 | ||
3768f368 CM |
675 | static inline u64 btrfs_root_blocknr(struct btrfs_root_item *item) |
676 | { | |
677 | return le64_to_cpu(item->blocknr); | |
678 | } | |
679 | ||
680 | static inline void btrfs_set_root_blocknr(struct btrfs_root_item *item, u64 val) | |
681 | { | |
682 | item->blocknr = cpu_to_le64(val); | |
683 | } | |
684 | ||
d6e4a428 CM |
685 | static inline u64 btrfs_root_dirid(struct btrfs_root_item *item) |
686 | { | |
687 | return le64_to_cpu(item->root_dirid); | |
688 | } | |
689 | ||
690 | static inline void btrfs_set_root_dirid(struct btrfs_root_item *item, u64 val) | |
691 | { | |
692 | item->root_dirid = cpu_to_le64(val); | |
693 | } | |
694 | ||
3768f368 CM |
695 | static inline u32 btrfs_root_refs(struct btrfs_root_item *item) |
696 | { | |
697 | return le32_to_cpu(item->refs); | |
698 | } | |
699 | ||
700 | static inline void btrfs_set_root_refs(struct btrfs_root_item *item, u32 val) | |
701 | { | |
702 | item->refs = cpu_to_le32(val); | |
703 | } | |
704 | ||
705 | static inline u64 btrfs_super_blocknr(struct btrfs_super_block *s) | |
706 | { | |
707 | return le64_to_cpu(s->blocknr); | |
708 | } | |
709 | ||
710 | static inline void btrfs_set_super_blocknr(struct btrfs_super_block *s, u64 val) | |
711 | { | |
712 | s->blocknr = cpu_to_le64(val); | |
713 | } | |
714 | ||
0f7d52f4 CM |
715 | static inline u64 btrfs_super_generation(struct btrfs_super_block *s) |
716 | { | |
717 | return le64_to_cpu(s->generation); | |
718 | } | |
719 | ||
720 | static inline void btrfs_set_super_generation(struct btrfs_super_block *s, | |
721 | u64 val) | |
722 | { | |
723 | s->generation = cpu_to_le64(val); | |
724 | } | |
725 | ||
3768f368 CM |
726 | static inline u64 btrfs_super_root(struct btrfs_super_block *s) |
727 | { | |
728 | return le64_to_cpu(s->root); | |
729 | } | |
730 | ||
731 | static inline void btrfs_set_super_root(struct btrfs_super_block *s, u64 val) | |
732 | { | |
733 | s->root = cpu_to_le64(val); | |
734 | } | |
735 | ||
736 | static inline u64 btrfs_super_total_blocks(struct btrfs_super_block *s) | |
737 | { | |
738 | return le64_to_cpu(s->total_blocks); | |
739 | } | |
740 | ||
741 | static inline void btrfs_set_super_total_blocks(struct btrfs_super_block *s, | |
742 | u64 val) | |
743 | { | |
744 | s->total_blocks = cpu_to_le64(val); | |
745 | } | |
746 | ||
747 | static inline u64 btrfs_super_blocks_used(struct btrfs_super_block *s) | |
748 | { | |
749 | return le64_to_cpu(s->blocks_used); | |
750 | } | |
751 | ||
752 | static inline void btrfs_set_super_blocks_used(struct btrfs_super_block *s, | |
753 | u64 val) | |
754 | { | |
755 | s->blocks_used = cpu_to_le64(val); | |
756 | } | |
757 | ||
123abc88 | 758 | static inline u32 btrfs_super_blocksize(struct btrfs_super_block *s) |
3768f368 | 759 | { |
123abc88 | 760 | return le32_to_cpu(s->blocksize); |
3768f368 CM |
761 | } |
762 | ||
763 | static inline void btrfs_set_super_blocksize(struct btrfs_super_block *s, | |
123abc88 CM |
764 | u32 val) |
765 | { | |
766 | s->blocksize = cpu_to_le32(val); | |
767 | } | |
768 | ||
2e635a27 CM |
769 | static inline u64 btrfs_super_root_dir(struct btrfs_super_block *s) |
770 | { | |
771 | return le64_to_cpu(s->root_dir_objectid); | |
772 | } | |
773 | ||
774 | static inline void btrfs_set_super_root_dir(struct btrfs_super_block *s, u64 | |
775 | val) | |
776 | { | |
777 | s->root_dir_objectid = cpu_to_le64(val); | |
778 | } | |
779 | ||
b4100d64 CM |
780 | static inline u64 btrfs_super_last_device_id(struct btrfs_super_block *s) |
781 | { | |
782 | return le64_to_cpu(s->last_device_id); | |
783 | } | |
784 | ||
785 | static inline void btrfs_set_super_last_device_id(struct btrfs_super_block *s, | |
786 | u64 val) | |
787 | { | |
788 | s->last_device_id = cpu_to_le64(val); | |
789 | } | |
790 | ||
791 | static inline u64 btrfs_super_device_id(struct btrfs_super_block *s) | |
792 | { | |
793 | return le64_to_cpu(s->device_id); | |
794 | } | |
795 | ||
796 | static inline void btrfs_set_super_device_id(struct btrfs_super_block *s, | |
797 | u64 val) | |
798 | { | |
799 | s->device_id = cpu_to_le64(val); | |
800 | } | |
801 | ||
0bd93ba0 CM |
802 | static inline u64 btrfs_super_device_block_start(struct btrfs_super_block *s) |
803 | { | |
804 | return le64_to_cpu(s->device_block_start); | |
805 | } | |
806 | ||
807 | static inline void btrfs_set_super_device_block_start(struct btrfs_super_block | |
808 | *s, u64 val) | |
809 | { | |
810 | s->device_block_start = cpu_to_le64(val); | |
811 | } | |
812 | ||
813 | static inline u64 btrfs_super_device_num_blocks(struct btrfs_super_block *s) | |
814 | { | |
815 | return le64_to_cpu(s->device_num_blocks); | |
816 | } | |
817 | ||
818 | static inline void btrfs_set_super_device_num_blocks(struct btrfs_super_block | |
819 | *s, u64 val) | |
820 | { | |
821 | s->device_num_blocks = cpu_to_le64(val); | |
822 | } | |
823 | ||
824 | static inline u64 btrfs_super_device_root(struct btrfs_super_block *s) | |
825 | { | |
826 | return le64_to_cpu(s->device_root); | |
827 | } | |
828 | ||
829 | static inline void btrfs_set_super_device_root(struct btrfs_super_block | |
830 | *s, u64 val) | |
831 | { | |
832 | s->device_root = cpu_to_le64(val); | |
833 | } | |
834 | ||
835 | ||
123abc88 | 836 | static inline u8 *btrfs_leaf_data(struct btrfs_leaf *l) |
3768f368 | 837 | { |
123abc88 | 838 | return (u8 *)l->items; |
3768f368 | 839 | } |
9f5fae2f | 840 | |
236454df CM |
841 | static inline int btrfs_file_extent_type(struct btrfs_file_extent_item *e) |
842 | { | |
843 | return e->type; | |
844 | } | |
845 | static inline void btrfs_set_file_extent_type(struct btrfs_file_extent_item *e, | |
846 | u8 val) | |
847 | { | |
848 | e->type = val; | |
849 | } | |
850 | ||
851 | static inline char *btrfs_file_extent_inline_start(struct | |
852 | btrfs_file_extent_item *e) | |
853 | { | |
854 | return (char *)(&e->disk_blocknr); | |
855 | } | |
856 | ||
857 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
858 | { | |
859 | return (unsigned long)(&((struct | |
860 | btrfs_file_extent_item *)NULL)->disk_blocknr) + datasize; | |
861 | } | |
862 | ||
863 | static inline u32 btrfs_file_extent_inline_len(struct btrfs_item *e) | |
864 | { | |
865 | struct btrfs_file_extent_item *fe = NULL; | |
866 | return btrfs_item_size(e) - (unsigned long)(&fe->disk_blocknr); | |
867 | } | |
868 | ||
9f5fae2f CM |
869 | static inline u64 btrfs_file_extent_disk_blocknr(struct btrfs_file_extent_item |
870 | *e) | |
871 | { | |
872 | return le64_to_cpu(e->disk_blocknr); | |
873 | } | |
874 | ||
875 | static inline void btrfs_set_file_extent_disk_blocknr(struct | |
876 | btrfs_file_extent_item | |
877 | *e, u64 val) | |
878 | { | |
879 | e->disk_blocknr = cpu_to_le64(val); | |
880 | } | |
881 | ||
71951f35 CM |
882 | static inline u64 btrfs_file_extent_generation(struct btrfs_file_extent_item *e) |
883 | { | |
884 | return le64_to_cpu(e->generation); | |
885 | } | |
886 | ||
887 | static inline void btrfs_set_file_extent_generation(struct | |
888 | btrfs_file_extent_item *e, | |
889 | u64 val) | |
890 | { | |
891 | e->generation = cpu_to_le64(val); | |
892 | } | |
893 | ||
9f5fae2f CM |
894 | static inline u64 btrfs_file_extent_disk_num_blocks(struct |
895 | btrfs_file_extent_item *e) | |
896 | { | |
897 | return le64_to_cpu(e->disk_num_blocks); | |
898 | } | |
899 | ||
900 | static inline void btrfs_set_file_extent_disk_num_blocks(struct | |
901 | btrfs_file_extent_item | |
902 | *e, u64 val) | |
903 | { | |
904 | e->disk_num_blocks = cpu_to_le64(val); | |
905 | } | |
906 | ||
907 | static inline u64 btrfs_file_extent_offset(struct btrfs_file_extent_item *e) | |
908 | { | |
909 | return le64_to_cpu(e->offset); | |
910 | } | |
911 | ||
912 | static inline void btrfs_set_file_extent_offset(struct btrfs_file_extent_item | |
913 | *e, u64 val) | |
914 | { | |
915 | e->offset = cpu_to_le64(val); | |
916 | } | |
917 | ||
918 | static inline u64 btrfs_file_extent_num_blocks(struct btrfs_file_extent_item | |
919 | *e) | |
920 | { | |
921 | return le64_to_cpu(e->num_blocks); | |
922 | } | |
923 | ||
924 | static inline void btrfs_set_file_extent_num_blocks(struct | |
925 | btrfs_file_extent_item *e, | |
926 | u64 val) | |
927 | { | |
928 | e->num_blocks = cpu_to_le64(val); | |
929 | } | |
930 | ||
0bd93ba0 CM |
931 | static inline u16 btrfs_device_pathlen(struct btrfs_device_item *d) |
932 | { | |
933 | return le16_to_cpu(d->pathlen); | |
934 | } | |
935 | ||
936 | static inline void btrfs_set_device_pathlen(struct btrfs_device_item *d, | |
937 | u16 val) | |
938 | { | |
939 | d->pathlen = cpu_to_le16(val); | |
940 | } | |
941 | ||
b4100d64 CM |
942 | static inline u64 btrfs_device_id(struct btrfs_device_item *d) |
943 | { | |
944 | return le64_to_cpu(d->device_id); | |
945 | } | |
946 | ||
947 | static inline void btrfs_set_device_id(struct btrfs_device_item *d, | |
948 | u64 val) | |
949 | { | |
950 | d->device_id = cpu_to_le64(val); | |
951 | } | |
952 | ||
e20d96d6 CM |
953 | static inline struct btrfs_root *btrfs_sb(struct super_block *sb) |
954 | { | |
955 | return sb->s_fs_info; | |
956 | } | |
957 | ||
d6025579 CM |
958 | static inline void btrfs_check_bounds(void *vptr, size_t len, |
959 | void *vcontainer, size_t container_len) | |
960 | { | |
961 | char *ptr = vptr; | |
962 | char *container = vcontainer; | |
963 | WARN_ON(ptr < container); | |
964 | WARN_ON(ptr + len > container + container_len); | |
965 | } | |
966 | ||
967 | static inline void btrfs_memcpy(struct btrfs_root *root, | |
968 | void *dst_block, | |
969 | void *dst, const void *src, size_t nr) | |
970 | { | |
971 | btrfs_check_bounds(dst, nr, dst_block, root->fs_info->sb->s_blocksize); | |
972 | memcpy(dst, src, nr); | |
973 | } | |
974 | ||
975 | static inline void btrfs_memmove(struct btrfs_root *root, | |
976 | void *dst_block, | |
977 | void *dst, void *src, size_t nr) | |
978 | { | |
979 | btrfs_check_bounds(dst, nr, dst_block, root->fs_info->sb->s_blocksize); | |
980 | memmove(dst, src, nr); | |
981 | } | |
982 | ||
983 | static inline void btrfs_mark_buffer_dirty(struct buffer_head *bh) | |
984 | { | |
985 | WARN_ON(!atomic_read(&bh->b_count)); | |
986 | mark_buffer_dirty(bh); | |
987 | } | |
988 | ||
4beb1b8b CM |
989 | /* helper function to cast into the data area of the leaf. */ |
990 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 CM |
991 | ((type *)(btrfs_leaf_data(leaf) + \ |
992 | btrfs_item_offset((leaf)->items + (slot)))) | |
4beb1b8b | 993 | |
b18c6685 | 994 | /* extent-tree.c */ |
c5739bba CM |
995 | int btrfs_inc_root_ref(struct btrfs_trans_handle *trans, |
996 | struct btrfs_root *root); | |
e20d96d6 | 997 | struct buffer_head *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
e089f05c | 998 | struct btrfs_root *root); |
dee26a9f CM |
999 | int btrfs_alloc_extent(struct btrfs_trans_handle *trans, struct btrfs_root |
1000 | *root, u64 num_blocks, u64 search_start, u64 | |
d0dbc624 | 1001 | search_end, struct btrfs_key *ins); |
e089f05c | 1002 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e20d96d6 | 1003 | struct buffer_head *buf); |
e089f05c CM |
1004 | int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root |
1005 | *root, u64 blocknr, u64 num_blocks, int pin); | |
dee26a9f CM |
1006 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, struct |
1007 | btrfs_root *root); | |
b18c6685 CM |
1008 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
1009 | struct btrfs_root *root, | |
1010 | u64 blocknr, u64 num_blocks); | |
dee26a9f | 1011 | /* ctree.c */ |
6567e837 CM |
1012 | int btrfs_extend_item(struct btrfs_trans_handle *trans, struct btrfs_root |
1013 | *root, struct btrfs_path *path, u32 data_size); | |
b18c6685 CM |
1014 | int btrfs_truncate_item(struct btrfs_trans_handle *trans, |
1015 | struct btrfs_root *root, | |
1016 | struct btrfs_path *path, | |
1017 | u32 new_size); | |
e089f05c CM |
1018 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
1019 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
1020 | ins_len, int cow); | |
234b63a0 | 1021 | void btrfs_release_path(struct btrfs_root *root, struct btrfs_path *p); |
2c90e5d6 CM |
1022 | struct btrfs_path *btrfs_alloc_path(void); |
1023 | void btrfs_free_path(struct btrfs_path *p); | |
234b63a0 | 1024 | void btrfs_init_path(struct btrfs_path *p); |
e089f05c CM |
1025 | int btrfs_del_item(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1026 | struct btrfs_path *path); | |
1027 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root | |
1028 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
1029 | int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, struct btrfs_root | |
1030 | *root, struct btrfs_path *path, struct btrfs_key | |
1031 | *cpu_key, u32 data_size); | |
234b63a0 | 1032 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
123abc88 | 1033 | int btrfs_leaf_free_space(struct btrfs_root *root, struct btrfs_leaf *leaf); |
e089f05c | 1034 | int btrfs_drop_snapshot(struct btrfs_trans_handle *trans, struct btrfs_root |
e20d96d6 | 1035 | *root, struct buffer_head *snap); |
dee26a9f | 1036 | /* root-item.c */ |
e089f05c CM |
1037 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1038 | struct btrfs_key *key); | |
1039 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1040 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1041 | *item); | |
1042 | int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1043 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1044 | *item); | |
1045 | int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct | |
1046 | btrfs_root_item *item, struct btrfs_key *key); | |
dee26a9f | 1047 | /* dir-item.c */ |
e089f05c | 1048 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
1049 | *root, const char *name, int name_len, u64 dir, |
1050 | struct btrfs_key *location, u8 type); | |
7e38180e CM |
1051 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
1052 | struct btrfs_root *root, | |
1053 | struct btrfs_path *path, u64 dir, | |
1054 | const char *name, int name_len, | |
1055 | int mod); | |
1056 | struct btrfs_dir_item * | |
1057 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
1058 | struct btrfs_root *root, | |
1059 | struct btrfs_path *path, u64 dir, | |
1060 | u64 objectid, const char *name, int name_len, | |
1061 | int mod); | |
1062 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, | |
1063 | struct btrfs_path *path, | |
7f5c1516 | 1064 | const char *name, int name_len); |
7e38180e CM |
1065 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
1066 | struct btrfs_root *root, | |
1067 | struct btrfs_path *path, | |
1068 | struct btrfs_dir_item *di); | |
dee26a9f | 1069 | /* inode-map.c */ |
9f5fae2f CM |
1070 | int btrfs_find_free_objectid(struct btrfs_trans_handle *trans, |
1071 | struct btrfs_root *fs_root, | |
1072 | u64 dirid, u64 *objectid); | |
5be6f7f1 CM |
1073 | int btrfs_find_highest_inode(struct btrfs_root *fs_root, u64 *objectid); |
1074 | ||
dee26a9f | 1075 | /* inode-item.c */ |
293ffd5f CM |
1076 | int btrfs_insert_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
1077 | *root, u64 objectid, struct btrfs_inode_item | |
1078 | *inode_item); | |
1079 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root | |
d6e4a428 CM |
1080 | *root, struct btrfs_path *path, |
1081 | struct btrfs_key *location, int mod); | |
dee26a9f CM |
1082 | |
1083 | /* file-item.c */ | |
b18c6685 | 1084 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
dee26a9f | 1085 | struct btrfs_root *root, |
b18c6685 CM |
1086 | u64 objectid, u64 pos, u64 offset, |
1087 | u64 num_blocks); | |
dee26a9f CM |
1088 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
1089 | struct btrfs_root *root, | |
1090 | struct btrfs_path *path, u64 objectid, | |
9773a788 | 1091 | u64 blocknr, int mod); |
f254e52c CM |
1092 | int btrfs_csum_file_block(struct btrfs_trans_handle *trans, |
1093 | struct btrfs_root *root, | |
1094 | u64 objectid, u64 offset, | |
1095 | char *data, size_t len); | |
1096 | int btrfs_csum_verify_file_block(struct btrfs_root *root, | |
1097 | u64 objectid, u64 offset, | |
1098 | char *data, size_t len); | |
b18c6685 CM |
1099 | struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans, |
1100 | struct btrfs_root *root, | |
1101 | struct btrfs_path *path, | |
1102 | u64 objectid, u64 offset, | |
1103 | int cow); | |
d6e4a428 CM |
1104 | /* super.c */ |
1105 | extern struct subsystem btrfs_subsys; | |
1106 | ||
eb60ceac | 1107 | #endif |