Commit | Line | Data |
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234b63a0 CM |
1 | #ifndef __BTRFS__ |
2 | #define __BTRFS__ | |
eb60ceac | 3 | |
e20d96d6 | 4 | #include <linux/fs.h> |
d6025579 | 5 | #include <linux/buffer_head.h> |
d6e4a428 | 6 | #include <linux/kobject.h> |
8ef97622 | 7 | #include "bit-radix.h" |
e20d96d6 | 8 | |
e089f05c | 9 | struct btrfs_trans_handle; |
79154b1b | 10 | struct btrfs_transaction; |
35b7e476 CM |
11 | extern struct kmem_cache *btrfs_trans_handle_cachep; |
12 | extern struct kmem_cache *btrfs_transaction_cachep; | |
13 | extern struct kmem_cache *btrfs_bit_radix_cachep; | |
2c90e5d6 | 14 | extern struct kmem_cache *btrfs_path_cachep; |
e089f05c | 15 | |
3768f368 | 16 | #define BTRFS_MAGIC "_BtRfS_M" |
eb60ceac | 17 | |
6407bf6d | 18 | #define BTRFS_ROOT_TREE_OBJECTID 1ULL |
0bd93ba0 CM |
19 | #define BTRFS_DEV_TREE_OBJECTID 2ULL |
20 | #define BTRFS_EXTENT_TREE_OBJECTID 3ULL | |
21 | #define BTRFS_FS_TREE_OBJECTID 4ULL | |
22 | #define BTRFS_ROOT_TREE_DIR_OBJECTID 5ULL | |
23 | #define BTRFS_FIRST_FREE_OBJECTID 6ULL | |
3768f368 | 24 | |
e20d96d6 CM |
25 | /* |
26 | * we can actually store much bigger names, but lets not confuse the rest | |
27 | * of linux | |
28 | */ | |
29 | #define BTRFS_NAME_LEN 255 | |
30 | ||
f254e52c CM |
31 | /* 32 bytes in various csum fields */ |
32 | #define BTRFS_CSUM_SIZE 32 | |
509659cd CM |
33 | /* four bytes for CRC32 */ |
34 | #define BTRFS_CRC32_SIZE 4 | |
e06afa83 | 35 | #define BTRFS_EMPTY_DIR_SIZE 6 |
f254e52c | 36 | |
fabb5681 CM |
37 | #define BTRFS_FT_UNKNOWN 0 |
38 | #define BTRFS_FT_REG_FILE 1 | |
39 | #define BTRFS_FT_DIR 2 | |
40 | #define BTRFS_FT_CHRDEV 3 | |
41 | #define BTRFS_FT_BLKDEV 4 | |
42 | #define BTRFS_FT_FIFO 5 | |
43 | #define BTRFS_FT_SOCK 6 | |
44 | #define BTRFS_FT_SYMLINK 7 | |
45 | #define BTRFS_FT_MAX 8 | |
46 | ||
fec577fb CM |
47 | /* |
48 | * the key defines the order in the tree, and so it also defines (optimal) | |
49 | * block layout. objectid corresonds to the inode number. The flags | |
50 | * tells us things about the object, and is a kind of stream selector. | |
51 | * so for a given inode, keys with flags of 1 might refer to the inode | |
52 | * data, flags of 2 may point to file data in the btree and flags == 3 | |
53 | * may point to extents. | |
54 | * | |
55 | * offset is the starting byte offset for this key in the stream. | |
e2fa7227 CM |
56 | * |
57 | * btrfs_disk_key is in disk byte order. struct btrfs_key is always | |
58 | * in cpu native order. Otherwise they are identical and their sizes | |
59 | * should be the same (ie both packed) | |
fec577fb | 60 | */ |
e2fa7227 CM |
61 | struct btrfs_disk_key { |
62 | __le64 objectid; | |
f254e52c | 63 | __le32 flags; |
70b2befd | 64 | __le64 offset; |
e2fa7227 CM |
65 | } __attribute__ ((__packed__)); |
66 | ||
67 | struct btrfs_key { | |
eb60ceac | 68 | u64 objectid; |
f254e52c | 69 | u32 flags; |
70b2befd | 70 | u64 offset; |
eb60ceac CM |
71 | } __attribute__ ((__packed__)); |
72 | ||
fec577fb CM |
73 | /* |
74 | * every tree block (leaf or node) starts with this header. | |
75 | */ | |
bb492bb0 | 76 | struct btrfs_header { |
f254e52c | 77 | u8 csum[BTRFS_CSUM_SIZE]; |
3768f368 | 78 | u8 fsid[16]; /* FS specific uuid */ |
bb492bb0 | 79 | __le64 blocknr; /* which block this node is supposed to live in */ |
7f5c1516 | 80 | __le64 generation; |
4d775673 | 81 | __le64 owner; |
bb492bb0 CM |
82 | __le16 nritems; |
83 | __le16 flags; | |
9a6f11ed | 84 | u8 level; |
eb60ceac CM |
85 | } __attribute__ ((__packed__)); |
86 | ||
234b63a0 | 87 | #define BTRFS_MAX_LEVEL 8 |
123abc88 CM |
88 | #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->blocksize - \ |
89 | sizeof(struct btrfs_header)) / \ | |
90 | (sizeof(struct btrfs_disk_key) + sizeof(u64))) | |
91 | #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header)) | |
92 | #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->blocksize)) | |
236454df CM |
93 | #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
94 | sizeof(struct btrfs_item) - \ | |
95 | sizeof(struct btrfs_file_extent_item)) | |
eb60ceac | 96 | |
e20d96d6 | 97 | struct buffer_head; |
fec577fb CM |
98 | /* |
99 | * the super block basically lists the main trees of the FS | |
100 | * it currently lacks any block count etc etc | |
101 | */ | |
234b63a0 | 102 | struct btrfs_super_block { |
f254e52c | 103 | u8 csum[BTRFS_CSUM_SIZE]; |
87cbda5c | 104 | /* the first 3 fields must match struct btrfs_header */ |
3768f368 CM |
105 | u8 fsid[16]; /* FS specific uuid */ |
106 | __le64 blocknr; /* this block number */ | |
3768f368 | 107 | __le64 magic; |
123abc88 | 108 | __le32 blocksize; |
3768f368 CM |
109 | __le64 generation; |
110 | __le64 root; | |
111 | __le64 total_blocks; | |
112 | __le64 blocks_used; | |
2e635a27 | 113 | __le64 root_dir_objectid; |
b4100d64 | 114 | __le64 last_device_id; |
0bd93ba0 CM |
115 | /* fields below here vary with the underlying disk */ |
116 | __le64 device_block_start; | |
117 | __le64 device_num_blocks; | |
118 | __le64 device_root; | |
b4100d64 | 119 | __le64 device_id; |
cfaa7295 CM |
120 | } __attribute__ ((__packed__)); |
121 | ||
fec577fb | 122 | /* |
62e2749e | 123 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
124 | * the item in the leaf (relative to the start of the data area) |
125 | */ | |
0783fcfc | 126 | struct btrfs_item { |
e2fa7227 | 127 | struct btrfs_disk_key key; |
123abc88 | 128 | __le32 offset; |
0783fcfc | 129 | __le16 size; |
eb60ceac CM |
130 | } __attribute__ ((__packed__)); |
131 | ||
fec577fb CM |
132 | /* |
133 | * leaves have an item area and a data area: | |
134 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
135 | * | |
136 | * The data is separate from the items to get the keys closer together | |
137 | * during searches. | |
138 | */ | |
234b63a0 | 139 | struct btrfs_leaf { |
bb492bb0 | 140 | struct btrfs_header header; |
123abc88 | 141 | struct btrfs_item items[]; |
eb60ceac CM |
142 | } __attribute__ ((__packed__)); |
143 | ||
fec577fb CM |
144 | /* |
145 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
146 | * other blocks | |
147 | */ | |
123abc88 CM |
148 | struct btrfs_key_ptr { |
149 | struct btrfs_disk_key key; | |
150 | __le64 blockptr; | |
151 | } __attribute__ ((__packed__)); | |
152 | ||
234b63a0 | 153 | struct btrfs_node { |
bb492bb0 | 154 | struct btrfs_header header; |
123abc88 | 155 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
156 | } __attribute__ ((__packed__)); |
157 | ||
fec577fb | 158 | /* |
234b63a0 CM |
159 | * btrfs_paths remember the path taken from the root down to the leaf. |
160 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
161 | * to any other levels that are present. |
162 | * | |
163 | * The slots array records the index of the item or block pointer | |
164 | * used while walking the tree. | |
165 | */ | |
234b63a0 | 166 | struct btrfs_path { |
e20d96d6 | 167 | struct buffer_head *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 168 | int slots[BTRFS_MAX_LEVEL]; |
eb60ceac | 169 | }; |
5de08d7d | 170 | |
62e2749e CM |
171 | /* |
172 | * items in the extent btree are used to record the objectid of the | |
173 | * owner of the block and the number of references | |
174 | */ | |
175 | struct btrfs_extent_item { | |
176 | __le32 refs; | |
4d775673 | 177 | __le64 owner; |
62e2749e CM |
178 | } __attribute__ ((__packed__)); |
179 | ||
1e1d2701 | 180 | struct btrfs_inode_timespec { |
f254e52c | 181 | __le64 sec; |
1e1d2701 CM |
182 | __le32 nsec; |
183 | } __attribute__ ((__packed__)); | |
184 | ||
185 | /* | |
186 | * there is no padding here on purpose. If you want to extent the inode, | |
187 | * make a new item type | |
188 | */ | |
189 | struct btrfs_inode_item { | |
190 | __le64 generation; | |
191 | __le64 size; | |
192 | __le64 nblocks; | |
31f3c99b | 193 | __le64 block_group; |
1e1d2701 CM |
194 | __le32 nlink; |
195 | __le32 uid; | |
196 | __le32 gid; | |
197 | __le32 mode; | |
198 | __le32 rdev; | |
199 | __le16 flags; | |
200 | __le16 compat_flags; | |
201 | struct btrfs_inode_timespec atime; | |
202 | struct btrfs_inode_timespec ctime; | |
203 | struct btrfs_inode_timespec mtime; | |
204 | struct btrfs_inode_timespec otime; | |
205 | } __attribute__ ((__packed__)); | |
206 | ||
62e2749e | 207 | struct btrfs_dir_item { |
d6e4a428 | 208 | struct btrfs_disk_key location; |
62e2749e | 209 | __le16 flags; |
a8a2ee0c | 210 | __le16 name_len; |
62e2749e CM |
211 | u8 type; |
212 | } __attribute__ ((__packed__)); | |
213 | ||
214 | struct btrfs_root_item { | |
d6e4a428 CM |
215 | struct btrfs_inode_item inode; |
216 | __le64 root_dirid; | |
62e2749e CM |
217 | __le64 blocknr; |
218 | __le32 flags; | |
219 | __le64 block_limit; | |
220 | __le64 blocks_used; | |
221 | __le32 refs; | |
9f5fae2f | 222 | } __attribute__ ((__packed__)); |
62e2749e | 223 | |
236454df CM |
224 | #define BTRFS_FILE_EXTENT_REG 0 |
225 | #define BTRFS_FILE_EXTENT_INLINE 1 | |
226 | ||
9f5fae2f | 227 | struct btrfs_file_extent_item { |
71951f35 | 228 | __le64 generation; |
236454df | 229 | u8 type; |
9f5fae2f CM |
230 | /* |
231 | * disk space consumed by the extent, checksum blocks are included | |
232 | * in these numbers | |
233 | */ | |
234 | __le64 disk_blocknr; | |
235 | __le64 disk_num_blocks; | |
236 | /* | |
dee26a9f | 237 | * the logical offset in file blocks (no csums) |
9f5fae2f CM |
238 | * this extent record is for. This allows a file extent to point |
239 | * into the middle of an existing extent on disk, sharing it | |
240 | * between two snapshots (useful if some bytes in the middle of the | |
241 | * extent have changed | |
242 | */ | |
243 | __le64 offset; | |
244 | /* | |
245 | * the logical number of file blocks (no csums included) | |
246 | */ | |
247 | __le64 num_blocks; | |
248 | } __attribute__ ((__packed__)); | |
249 | ||
f254e52c | 250 | struct btrfs_csum_item { |
509659cd | 251 | u8 csum; |
f254e52c CM |
252 | } __attribute__ ((__packed__)); |
253 | ||
0bd93ba0 CM |
254 | struct btrfs_device_item { |
255 | __le16 pathlen; | |
b4100d64 | 256 | __le64 device_id; |
0bd93ba0 CM |
257 | } __attribute__ ((__packed__)); |
258 | ||
9078a3e1 CM |
259 | /* tag for the radix tree of block groups in ram */ |
260 | #define BTRFS_BLOCK_GROUP_DIRTY 0 | |
31f3c99b | 261 | #define BTRFS_BLOCK_GROUP_AVAIL 1 |
9078a3e1 | 262 | #define BTRFS_BLOCK_GROUP_SIZE (256 * 1024 * 1024) |
1e2677e0 CM |
263 | |
264 | ||
265 | #define BTRFS_BLOCK_GROUP_DATA 1 | |
9078a3e1 CM |
266 | struct btrfs_block_group_item { |
267 | __le64 used; | |
1e2677e0 | 268 | u8 flags; |
9078a3e1 CM |
269 | } __attribute__ ((__packed__)); |
270 | ||
271 | struct btrfs_block_group_cache { | |
272 | struct btrfs_key key; | |
273 | struct btrfs_block_group_item item; | |
3e1ad54f | 274 | struct radix_tree_root *radix; |
cd1bc465 CM |
275 | u64 first_free; |
276 | u64 last_alloc; | |
be744175 | 277 | u64 pinned; |
e37c9e69 | 278 | u64 last_prealloc; |
be744175 | 279 | int data; |
e37c9e69 | 280 | int cached; |
9078a3e1 CM |
281 | }; |
282 | ||
87cbda5c | 283 | struct crypto_hash; |
9f5fae2f | 284 | struct btrfs_fs_info { |
62e2749e CM |
285 | struct btrfs_root *extent_root; |
286 | struct btrfs_root *tree_root; | |
0bd93ba0 | 287 | struct btrfs_root *dev_root; |
0f7d52f4 | 288 | struct radix_tree_root fs_roots_radix; |
8ef97622 | 289 | struct radix_tree_root pending_del_radix; |
62e2749e | 290 | struct radix_tree_root pinned_radix; |
7eccb903 | 291 | struct radix_tree_root dev_radix; |
9078a3e1 | 292 | struct radix_tree_root block_group_radix; |
be744175 | 293 | struct radix_tree_root block_group_data_radix; |
e37c9e69 | 294 | struct radix_tree_root extent_map_radix; |
f2458e1d CM |
295 | |
296 | u64 extent_tree_insert[BTRFS_MAX_LEVEL * 3]; | |
297 | int extent_tree_insert_nr; | |
298 | u64 extent_tree_prealloc[BTRFS_MAX_LEVEL * 3]; | |
299 | int extent_tree_prealloc_nr; | |
300 | ||
293ffd5f | 301 | u64 generation; |
79154b1b | 302 | struct btrfs_transaction *running_transaction; |
1261ec42 | 303 | struct btrfs_super_block *disk_super; |
e20d96d6 CM |
304 | struct buffer_head *sb_buffer; |
305 | struct super_block *sb; | |
d98237b3 | 306 | struct inode *btree_inode; |
79154b1b | 307 | struct mutex trans_mutex; |
d561c025 | 308 | struct mutex fs_mutex; |
8fd17795 | 309 | struct list_head trans_list; |
87cbda5c CM |
310 | struct crypto_hash *hash_tfm; |
311 | spinlock_t hash_lock; | |
e66f709b | 312 | int do_barriers; |
d6e4a428 | 313 | struct kobject kobj; |
9f5fae2f CM |
314 | }; |
315 | ||
316 | /* | |
317 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 318 | * and for the extent tree extent_root root. |
9f5fae2f CM |
319 | */ |
320 | struct btrfs_root { | |
e20d96d6 CM |
321 | struct buffer_head *node; |
322 | struct buffer_head *commit_root; | |
62e2749e CM |
323 | struct btrfs_root_item root_item; |
324 | struct btrfs_key root_key; | |
9f5fae2f | 325 | struct btrfs_fs_info *fs_info; |
0f7d52f4 CM |
326 | struct inode *inode; |
327 | u64 objectid; | |
328 | u64 last_trans; | |
62e2749e | 329 | u32 blocksize; |
9f5fae2f CM |
330 | int ref_cows; |
331 | u32 type; | |
1b05da2e CM |
332 | u64 highest_inode; |
333 | u64 last_inode_alloc; | |
62e2749e CM |
334 | }; |
335 | ||
62e2749e CM |
336 | /* the lower bits in the key flags defines the item type */ |
337 | #define BTRFS_KEY_TYPE_MAX 256 | |
a429e513 CM |
338 | #define BTRFS_KEY_TYPE_SHIFT 24 |
339 | #define BTRFS_KEY_TYPE_MASK (((u32)BTRFS_KEY_TYPE_MAX - 1) << \ | |
340 | BTRFS_KEY_TYPE_SHIFT) | |
1e1d2701 CM |
341 | |
342 | /* | |
343 | * inode items have the data typically returned from stat and store other | |
344 | * info about object characteristics. There is one for every file and dir in | |
345 | * the FS | |
346 | */ | |
9078a3e1 CM |
347 | #define BTRFS_INODE_ITEM_KEY 1 |
348 | ||
349 | /* reserve 2-15 close to the inode for later flexibility */ | |
1e1d2701 CM |
350 | |
351 | /* | |
352 | * dir items are the name -> inode pointers in a directory. There is one | |
353 | * for every name in a directory. | |
354 | */ | |
9078a3e1 CM |
355 | #define BTRFS_DIR_ITEM_KEY 16 |
356 | #define BTRFS_DIR_INDEX_KEY 17 | |
1e1d2701 | 357 | /* |
9078a3e1 | 358 | * extent data is for file data |
1e1d2701 | 359 | */ |
9078a3e1 | 360 | #define BTRFS_EXTENT_DATA_KEY 18 |
f254e52c CM |
361 | /* |
362 | * csum items have the checksums for data in the extents | |
363 | */ | |
9078a3e1 CM |
364 | #define BTRFS_CSUM_ITEM_KEY 19 |
365 | ||
366 | /* reserve 20-31 for other file stuff */ | |
f254e52c | 367 | |
1e1d2701 CM |
368 | /* |
369 | * root items point to tree roots. There are typically in the root | |
370 | * tree used by the super block to find all the other trees | |
371 | */ | |
9078a3e1 | 372 | #define BTRFS_ROOT_ITEM_KEY 32 |
1e1d2701 CM |
373 | /* |
374 | * extent items are in the extent map tree. These record which blocks | |
375 | * are used, and how many references there are to each block | |
376 | */ | |
9078a3e1 CM |
377 | #define BTRFS_EXTENT_ITEM_KEY 33 |
378 | ||
379 | /* | |
380 | * block groups give us hints into the extent allocation trees. Which | |
381 | * blocks are free etc etc | |
382 | */ | |
383 | #define BTRFS_BLOCK_GROUP_ITEM_KEY 34 | |
9f5fae2f | 384 | |
0bd93ba0 CM |
385 | /* |
386 | * dev items list the devices that make up the FS | |
387 | */ | |
9078a3e1 | 388 | #define BTRFS_DEV_ITEM_KEY 35 |
0bd93ba0 | 389 | |
1e1d2701 CM |
390 | /* |
391 | * string items are for debugging. They just store a short string of | |
392 | * data in the FS | |
393 | */ | |
9078a3e1 CM |
394 | #define BTRFS_STRING_ITEM_KEY 253 |
395 | ||
396 | ||
397 | static inline u64 btrfs_block_group_used(struct btrfs_block_group_item *bi) | |
398 | { | |
399 | return le64_to_cpu(bi->used); | |
400 | } | |
401 | ||
402 | static inline void btrfs_set_block_group_used(struct | |
403 | btrfs_block_group_item *bi, | |
404 | u64 val) | |
405 | { | |
406 | bi->used = cpu_to_le64(val); | |
407 | } | |
1e1d2701 CM |
408 | |
409 | static inline u64 btrfs_inode_generation(struct btrfs_inode_item *i) | |
410 | { | |
411 | return le64_to_cpu(i->generation); | |
412 | } | |
413 | ||
414 | static inline void btrfs_set_inode_generation(struct btrfs_inode_item *i, | |
415 | u64 val) | |
416 | { | |
417 | i->generation = cpu_to_le64(val); | |
418 | } | |
419 | ||
420 | static inline u64 btrfs_inode_size(struct btrfs_inode_item *i) | |
421 | { | |
422 | return le64_to_cpu(i->size); | |
423 | } | |
424 | ||
425 | static inline void btrfs_set_inode_size(struct btrfs_inode_item *i, u64 val) | |
426 | { | |
427 | i->size = cpu_to_le64(val); | |
428 | } | |
429 | ||
430 | static inline u64 btrfs_inode_nblocks(struct btrfs_inode_item *i) | |
431 | { | |
432 | return le64_to_cpu(i->nblocks); | |
433 | } | |
434 | ||
435 | static inline void btrfs_set_inode_nblocks(struct btrfs_inode_item *i, u64 val) | |
436 | { | |
437 | i->nblocks = cpu_to_le64(val); | |
438 | } | |
439 | ||
31f3c99b CM |
440 | static inline u64 btrfs_inode_block_group(struct btrfs_inode_item *i) |
441 | { | |
442 | return le64_to_cpu(i->block_group); | |
443 | } | |
444 | ||
445 | static inline void btrfs_set_inode_block_group(struct btrfs_inode_item *i, | |
446 | u64 val) | |
447 | { | |
448 | i->block_group = cpu_to_le64(val); | |
449 | } | |
450 | ||
1e1d2701 CM |
451 | static inline u32 btrfs_inode_nlink(struct btrfs_inode_item *i) |
452 | { | |
453 | return le32_to_cpu(i->nlink); | |
454 | } | |
455 | ||
456 | static inline void btrfs_set_inode_nlink(struct btrfs_inode_item *i, u32 val) | |
457 | { | |
458 | i->nlink = cpu_to_le32(val); | |
459 | } | |
460 | ||
461 | static inline u32 btrfs_inode_uid(struct btrfs_inode_item *i) | |
462 | { | |
463 | return le32_to_cpu(i->uid); | |
464 | } | |
465 | ||
466 | static inline void btrfs_set_inode_uid(struct btrfs_inode_item *i, u32 val) | |
467 | { | |
468 | i->uid = cpu_to_le32(val); | |
469 | } | |
470 | ||
471 | static inline u32 btrfs_inode_gid(struct btrfs_inode_item *i) | |
472 | { | |
473 | return le32_to_cpu(i->gid); | |
474 | } | |
475 | ||
476 | static inline void btrfs_set_inode_gid(struct btrfs_inode_item *i, u32 val) | |
477 | { | |
478 | i->gid = cpu_to_le32(val); | |
479 | } | |
480 | ||
481 | static inline u32 btrfs_inode_mode(struct btrfs_inode_item *i) | |
482 | { | |
483 | return le32_to_cpu(i->mode); | |
484 | } | |
485 | ||
486 | static inline void btrfs_set_inode_mode(struct btrfs_inode_item *i, u32 val) | |
487 | { | |
488 | i->mode = cpu_to_le32(val); | |
489 | } | |
490 | ||
491 | static inline u32 btrfs_inode_rdev(struct btrfs_inode_item *i) | |
492 | { | |
493 | return le32_to_cpu(i->rdev); | |
494 | } | |
495 | ||
496 | static inline void btrfs_set_inode_rdev(struct btrfs_inode_item *i, u32 val) | |
497 | { | |
498 | i->rdev = cpu_to_le32(val); | |
499 | } | |
500 | ||
501 | static inline u16 btrfs_inode_flags(struct btrfs_inode_item *i) | |
502 | { | |
503 | return le16_to_cpu(i->flags); | |
504 | } | |
505 | ||
506 | static inline void btrfs_set_inode_flags(struct btrfs_inode_item *i, u16 val) | |
507 | { | |
508 | i->flags = cpu_to_le16(val); | |
509 | } | |
510 | ||
511 | static inline u16 btrfs_inode_compat_flags(struct btrfs_inode_item *i) | |
512 | { | |
513 | return le16_to_cpu(i->compat_flags); | |
514 | } | |
515 | ||
516 | static inline void btrfs_set_inode_compat_flags(struct btrfs_inode_item *i, | |
517 | u16 val) | |
518 | { | |
519 | i->compat_flags = cpu_to_le16(val); | |
520 | } | |
521 | ||
f254e52c | 522 | static inline u64 btrfs_timespec_sec(struct btrfs_inode_timespec *ts) |
e20d96d6 | 523 | { |
f254e52c | 524 | return le64_to_cpu(ts->sec); |
e20d96d6 CM |
525 | } |
526 | ||
527 | static inline void btrfs_set_timespec_sec(struct btrfs_inode_timespec *ts, | |
f254e52c | 528 | u64 val) |
e20d96d6 | 529 | { |
f254e52c | 530 | ts->sec = cpu_to_le64(val); |
e20d96d6 CM |
531 | } |
532 | ||
533 | static inline u32 btrfs_timespec_nsec(struct btrfs_inode_timespec *ts) | |
534 | { | |
535 | return le32_to_cpu(ts->nsec); | |
536 | } | |
537 | ||
538 | static inline void btrfs_set_timespec_nsec(struct btrfs_inode_timespec *ts, | |
539 | u32 val) | |
540 | { | |
541 | ts->nsec = cpu_to_le32(val); | |
542 | } | |
543 | ||
234b63a0 | 544 | static inline u32 btrfs_extent_refs(struct btrfs_extent_item *ei) |
cf27e1ee CM |
545 | { |
546 | return le32_to_cpu(ei->refs); | |
547 | } | |
548 | ||
234b63a0 | 549 | static inline void btrfs_set_extent_refs(struct btrfs_extent_item *ei, u32 val) |
cf27e1ee CM |
550 | { |
551 | ei->refs = cpu_to_le32(val); | |
552 | } | |
553 | ||
4d775673 CM |
554 | static inline u64 btrfs_extent_owner(struct btrfs_extent_item *ei) |
555 | { | |
556 | return le64_to_cpu(ei->owner); | |
557 | } | |
558 | ||
559 | static inline void btrfs_set_extent_owner(struct btrfs_extent_item *ei, u64 val) | |
560 | { | |
561 | ei->owner = cpu_to_le64(val); | |
562 | } | |
563 | ||
234b63a0 | 564 | static inline u64 btrfs_node_blockptr(struct btrfs_node *n, int nr) |
1d4f8a0c | 565 | { |
123abc88 | 566 | return le64_to_cpu(n->ptrs[nr].blockptr); |
1d4f8a0c CM |
567 | } |
568 | ||
4d775673 | 569 | |
234b63a0 CM |
570 | static inline void btrfs_set_node_blockptr(struct btrfs_node *n, int nr, |
571 | u64 val) | |
1d4f8a0c | 572 | { |
123abc88 | 573 | n->ptrs[nr].blockptr = cpu_to_le64(val); |
1d4f8a0c CM |
574 | } |
575 | ||
123abc88 | 576 | static inline u32 btrfs_item_offset(struct btrfs_item *item) |
0783fcfc | 577 | { |
123abc88 | 578 | return le32_to_cpu(item->offset); |
0783fcfc CM |
579 | } |
580 | ||
123abc88 | 581 | static inline void btrfs_set_item_offset(struct btrfs_item *item, u32 val) |
0783fcfc | 582 | { |
123abc88 | 583 | item->offset = cpu_to_le32(val); |
0783fcfc CM |
584 | } |
585 | ||
123abc88 | 586 | static inline u32 btrfs_item_end(struct btrfs_item *item) |
0783fcfc | 587 | { |
123abc88 | 588 | return le32_to_cpu(item->offset) + le16_to_cpu(item->size); |
0783fcfc CM |
589 | } |
590 | ||
591 | static inline u16 btrfs_item_size(struct btrfs_item *item) | |
592 | { | |
593 | return le16_to_cpu(item->size); | |
594 | } | |
595 | ||
596 | static inline void btrfs_set_item_size(struct btrfs_item *item, u16 val) | |
597 | { | |
598 | item->size = cpu_to_le16(val); | |
599 | } | |
600 | ||
1d4f6404 CM |
601 | static inline u16 btrfs_dir_flags(struct btrfs_dir_item *d) |
602 | { | |
603 | return le16_to_cpu(d->flags); | |
604 | } | |
605 | ||
606 | static inline void btrfs_set_dir_flags(struct btrfs_dir_item *d, u16 val) | |
607 | { | |
608 | d->flags = cpu_to_le16(val); | |
609 | } | |
610 | ||
611 | static inline u8 btrfs_dir_type(struct btrfs_dir_item *d) | |
612 | { | |
613 | return d->type; | |
614 | } | |
615 | ||
616 | static inline void btrfs_set_dir_type(struct btrfs_dir_item *d, u8 val) | |
617 | { | |
618 | d->type = val; | |
619 | } | |
620 | ||
a8a2ee0c CM |
621 | static inline u16 btrfs_dir_name_len(struct btrfs_dir_item *d) |
622 | { | |
623 | return le16_to_cpu(d->name_len); | |
624 | } | |
625 | ||
626 | static inline void btrfs_set_dir_name_len(struct btrfs_dir_item *d, u16 val) | |
1d4f6404 | 627 | { |
a8a2ee0c | 628 | d->name_len = cpu_to_le16(val); |
1d4f6404 CM |
629 | } |
630 | ||
e2fa7227 CM |
631 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
632 | struct btrfs_disk_key *disk) | |
633 | { | |
634 | cpu->offset = le64_to_cpu(disk->offset); | |
635 | cpu->flags = le32_to_cpu(disk->flags); | |
636 | cpu->objectid = le64_to_cpu(disk->objectid); | |
637 | } | |
638 | ||
639 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
640 | struct btrfs_key *cpu) | |
641 | { | |
642 | disk->offset = cpu_to_le64(cpu->offset); | |
643 | disk->flags = cpu_to_le32(cpu->flags); | |
644 | disk->objectid = cpu_to_le64(cpu->objectid); | |
645 | } | |
646 | ||
62e2749e | 647 | static inline u64 btrfs_disk_key_objectid(struct btrfs_disk_key *disk) |
e2fa7227 CM |
648 | { |
649 | return le64_to_cpu(disk->objectid); | |
650 | } | |
651 | ||
62e2749e CM |
652 | static inline void btrfs_set_disk_key_objectid(struct btrfs_disk_key *disk, |
653 | u64 val) | |
e2fa7227 CM |
654 | { |
655 | disk->objectid = cpu_to_le64(val); | |
656 | } | |
657 | ||
62e2749e | 658 | static inline u64 btrfs_disk_key_offset(struct btrfs_disk_key *disk) |
e2fa7227 CM |
659 | { |
660 | return le64_to_cpu(disk->offset); | |
661 | } | |
662 | ||
62e2749e CM |
663 | static inline void btrfs_set_disk_key_offset(struct btrfs_disk_key *disk, |
664 | u64 val) | |
e2fa7227 CM |
665 | { |
666 | disk->offset = cpu_to_le64(val); | |
667 | } | |
668 | ||
62e2749e | 669 | static inline u32 btrfs_disk_key_flags(struct btrfs_disk_key *disk) |
e2fa7227 CM |
670 | { |
671 | return le32_to_cpu(disk->flags); | |
672 | } | |
673 | ||
62e2749e CM |
674 | static inline void btrfs_set_disk_key_flags(struct btrfs_disk_key *disk, |
675 | u32 val) | |
e2fa7227 CM |
676 | { |
677 | disk->flags = cpu_to_le32(val); | |
678 | } | |
679 | ||
a429e513 | 680 | static inline u32 btrfs_disk_key_type(struct btrfs_disk_key *key) |
7fcde0e3 | 681 | { |
a429e513 | 682 | return le32_to_cpu(key->flags) >> BTRFS_KEY_TYPE_SHIFT; |
7fcde0e3 CM |
683 | } |
684 | ||
a429e513 CM |
685 | static inline void btrfs_set_disk_key_type(struct btrfs_disk_key *key, |
686 | u32 val) | |
7fcde0e3 | 687 | { |
a429e513 CM |
688 | u32 flags = btrfs_disk_key_flags(key); |
689 | BUG_ON(val >= BTRFS_KEY_TYPE_MAX); | |
690 | val = val << BTRFS_KEY_TYPE_SHIFT; | |
691 | flags = (flags & ~BTRFS_KEY_TYPE_MASK) | val; | |
692 | btrfs_set_disk_key_flags(key, flags); | |
7fcde0e3 CM |
693 | } |
694 | ||
62e2749e CM |
695 | static inline u32 btrfs_key_type(struct btrfs_key *key) |
696 | { | |
a429e513 | 697 | return key->flags >> BTRFS_KEY_TYPE_SHIFT; |
62e2749e CM |
698 | } |
699 | ||
a429e513 | 700 | static inline void btrfs_set_key_type(struct btrfs_key *key, u32 val) |
62e2749e | 701 | { |
a429e513 CM |
702 | BUG_ON(val >= BTRFS_KEY_TYPE_MAX); |
703 | val = val << BTRFS_KEY_TYPE_SHIFT; | |
704 | key->flags = (key->flags & ~(BTRFS_KEY_TYPE_MASK)) | val; | |
62e2749e CM |
705 | } |
706 | ||
bb492bb0 | 707 | static inline u64 btrfs_header_blocknr(struct btrfs_header *h) |
7518a238 | 708 | { |
bb492bb0 | 709 | return le64_to_cpu(h->blocknr); |
7518a238 CM |
710 | } |
711 | ||
bb492bb0 | 712 | static inline void btrfs_set_header_blocknr(struct btrfs_header *h, u64 blocknr) |
7518a238 | 713 | { |
bb492bb0 | 714 | h->blocknr = cpu_to_le64(blocknr); |
7518a238 CM |
715 | } |
716 | ||
7f5c1516 CM |
717 | static inline u64 btrfs_header_generation(struct btrfs_header *h) |
718 | { | |
719 | return le64_to_cpu(h->generation); | |
720 | } | |
721 | ||
722 | static inline void btrfs_set_header_generation(struct btrfs_header *h, | |
723 | u64 val) | |
724 | { | |
725 | h->generation = cpu_to_le64(val); | |
726 | } | |
727 | ||
4d775673 CM |
728 | static inline u64 btrfs_header_owner(struct btrfs_header *h) |
729 | { | |
730 | return le64_to_cpu(h->owner); | |
731 | } | |
732 | ||
733 | static inline void btrfs_set_header_owner(struct btrfs_header *h, | |
734 | u64 val) | |
735 | { | |
736 | h->owner = cpu_to_le64(val); | |
737 | } | |
738 | ||
bb492bb0 | 739 | static inline u16 btrfs_header_nritems(struct btrfs_header *h) |
7518a238 | 740 | { |
bb492bb0 | 741 | return le16_to_cpu(h->nritems); |
7518a238 CM |
742 | } |
743 | ||
bb492bb0 | 744 | static inline void btrfs_set_header_nritems(struct btrfs_header *h, u16 val) |
7518a238 | 745 | { |
bb492bb0 | 746 | h->nritems = cpu_to_le16(val); |
7518a238 CM |
747 | } |
748 | ||
bb492bb0 | 749 | static inline u16 btrfs_header_flags(struct btrfs_header *h) |
7518a238 | 750 | { |
bb492bb0 | 751 | return le16_to_cpu(h->flags); |
7518a238 CM |
752 | } |
753 | ||
bb492bb0 | 754 | static inline void btrfs_set_header_flags(struct btrfs_header *h, u16 val) |
7518a238 | 755 | { |
bb492bb0 | 756 | h->flags = cpu_to_le16(val); |
7518a238 CM |
757 | } |
758 | ||
bb492bb0 | 759 | static inline int btrfs_header_level(struct btrfs_header *h) |
7518a238 | 760 | { |
9a6f11ed | 761 | return h->level; |
7518a238 CM |
762 | } |
763 | ||
bb492bb0 | 764 | static inline void btrfs_set_header_level(struct btrfs_header *h, int level) |
7518a238 | 765 | { |
234b63a0 | 766 | BUG_ON(level > BTRFS_MAX_LEVEL); |
9a6f11ed | 767 | h->level = level; |
7518a238 CM |
768 | } |
769 | ||
234b63a0 | 770 | static inline int btrfs_is_leaf(struct btrfs_node *n) |
7518a238 CM |
771 | { |
772 | return (btrfs_header_level(&n->header) == 0); | |
773 | } | |
774 | ||
3768f368 CM |
775 | static inline u64 btrfs_root_blocknr(struct btrfs_root_item *item) |
776 | { | |
777 | return le64_to_cpu(item->blocknr); | |
778 | } | |
779 | ||
780 | static inline void btrfs_set_root_blocknr(struct btrfs_root_item *item, u64 val) | |
781 | { | |
782 | item->blocknr = cpu_to_le64(val); | |
783 | } | |
784 | ||
d6e4a428 CM |
785 | static inline u64 btrfs_root_dirid(struct btrfs_root_item *item) |
786 | { | |
787 | return le64_to_cpu(item->root_dirid); | |
788 | } | |
789 | ||
790 | static inline void btrfs_set_root_dirid(struct btrfs_root_item *item, u64 val) | |
791 | { | |
792 | item->root_dirid = cpu_to_le64(val); | |
793 | } | |
794 | ||
3768f368 CM |
795 | static inline u32 btrfs_root_refs(struct btrfs_root_item *item) |
796 | { | |
797 | return le32_to_cpu(item->refs); | |
798 | } | |
799 | ||
800 | static inline void btrfs_set_root_refs(struct btrfs_root_item *item, u32 val) | |
801 | { | |
802 | item->refs = cpu_to_le32(val); | |
803 | } | |
804 | ||
805 | static inline u64 btrfs_super_blocknr(struct btrfs_super_block *s) | |
806 | { | |
807 | return le64_to_cpu(s->blocknr); | |
808 | } | |
809 | ||
810 | static inline void btrfs_set_super_blocknr(struct btrfs_super_block *s, u64 val) | |
811 | { | |
812 | s->blocknr = cpu_to_le64(val); | |
813 | } | |
814 | ||
0f7d52f4 CM |
815 | static inline u64 btrfs_super_generation(struct btrfs_super_block *s) |
816 | { | |
817 | return le64_to_cpu(s->generation); | |
818 | } | |
819 | ||
820 | static inline void btrfs_set_super_generation(struct btrfs_super_block *s, | |
821 | u64 val) | |
822 | { | |
823 | s->generation = cpu_to_le64(val); | |
824 | } | |
825 | ||
3768f368 CM |
826 | static inline u64 btrfs_super_root(struct btrfs_super_block *s) |
827 | { | |
828 | return le64_to_cpu(s->root); | |
829 | } | |
830 | ||
831 | static inline void btrfs_set_super_root(struct btrfs_super_block *s, u64 val) | |
832 | { | |
833 | s->root = cpu_to_le64(val); | |
834 | } | |
835 | ||
836 | static inline u64 btrfs_super_total_blocks(struct btrfs_super_block *s) | |
837 | { | |
838 | return le64_to_cpu(s->total_blocks); | |
839 | } | |
840 | ||
841 | static inline void btrfs_set_super_total_blocks(struct btrfs_super_block *s, | |
842 | u64 val) | |
843 | { | |
844 | s->total_blocks = cpu_to_le64(val); | |
845 | } | |
846 | ||
847 | static inline u64 btrfs_super_blocks_used(struct btrfs_super_block *s) | |
848 | { | |
849 | return le64_to_cpu(s->blocks_used); | |
850 | } | |
851 | ||
852 | static inline void btrfs_set_super_blocks_used(struct btrfs_super_block *s, | |
853 | u64 val) | |
854 | { | |
855 | s->blocks_used = cpu_to_le64(val); | |
856 | } | |
857 | ||
123abc88 | 858 | static inline u32 btrfs_super_blocksize(struct btrfs_super_block *s) |
3768f368 | 859 | { |
123abc88 | 860 | return le32_to_cpu(s->blocksize); |
3768f368 CM |
861 | } |
862 | ||
863 | static inline void btrfs_set_super_blocksize(struct btrfs_super_block *s, | |
123abc88 CM |
864 | u32 val) |
865 | { | |
866 | s->blocksize = cpu_to_le32(val); | |
867 | } | |
868 | ||
2e635a27 CM |
869 | static inline u64 btrfs_super_root_dir(struct btrfs_super_block *s) |
870 | { | |
871 | return le64_to_cpu(s->root_dir_objectid); | |
872 | } | |
873 | ||
874 | static inline void btrfs_set_super_root_dir(struct btrfs_super_block *s, u64 | |
875 | val) | |
876 | { | |
877 | s->root_dir_objectid = cpu_to_le64(val); | |
878 | } | |
879 | ||
b4100d64 CM |
880 | static inline u64 btrfs_super_last_device_id(struct btrfs_super_block *s) |
881 | { | |
882 | return le64_to_cpu(s->last_device_id); | |
883 | } | |
884 | ||
885 | static inline void btrfs_set_super_last_device_id(struct btrfs_super_block *s, | |
886 | u64 val) | |
887 | { | |
888 | s->last_device_id = cpu_to_le64(val); | |
889 | } | |
890 | ||
891 | static inline u64 btrfs_super_device_id(struct btrfs_super_block *s) | |
892 | { | |
893 | return le64_to_cpu(s->device_id); | |
894 | } | |
895 | ||
896 | static inline void btrfs_set_super_device_id(struct btrfs_super_block *s, | |
897 | u64 val) | |
898 | { | |
899 | s->device_id = cpu_to_le64(val); | |
900 | } | |
901 | ||
0bd93ba0 CM |
902 | static inline u64 btrfs_super_device_block_start(struct btrfs_super_block *s) |
903 | { | |
904 | return le64_to_cpu(s->device_block_start); | |
905 | } | |
906 | ||
907 | static inline void btrfs_set_super_device_block_start(struct btrfs_super_block | |
908 | *s, u64 val) | |
909 | { | |
910 | s->device_block_start = cpu_to_le64(val); | |
911 | } | |
912 | ||
913 | static inline u64 btrfs_super_device_num_blocks(struct btrfs_super_block *s) | |
914 | { | |
915 | return le64_to_cpu(s->device_num_blocks); | |
916 | } | |
917 | ||
918 | static inline void btrfs_set_super_device_num_blocks(struct btrfs_super_block | |
919 | *s, u64 val) | |
920 | { | |
921 | s->device_num_blocks = cpu_to_le64(val); | |
922 | } | |
923 | ||
924 | static inline u64 btrfs_super_device_root(struct btrfs_super_block *s) | |
925 | { | |
926 | return le64_to_cpu(s->device_root); | |
927 | } | |
928 | ||
929 | static inline void btrfs_set_super_device_root(struct btrfs_super_block | |
930 | *s, u64 val) | |
931 | { | |
932 | s->device_root = cpu_to_le64(val); | |
933 | } | |
934 | ||
935 | ||
123abc88 | 936 | static inline u8 *btrfs_leaf_data(struct btrfs_leaf *l) |
3768f368 | 937 | { |
123abc88 | 938 | return (u8 *)l->items; |
3768f368 | 939 | } |
9f5fae2f | 940 | |
236454df CM |
941 | static inline int btrfs_file_extent_type(struct btrfs_file_extent_item *e) |
942 | { | |
943 | return e->type; | |
944 | } | |
945 | static inline void btrfs_set_file_extent_type(struct btrfs_file_extent_item *e, | |
946 | u8 val) | |
947 | { | |
948 | e->type = val; | |
949 | } | |
950 | ||
951 | static inline char *btrfs_file_extent_inline_start(struct | |
952 | btrfs_file_extent_item *e) | |
953 | { | |
954 | return (char *)(&e->disk_blocknr); | |
955 | } | |
956 | ||
957 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
958 | { | |
959 | return (unsigned long)(&((struct | |
960 | btrfs_file_extent_item *)NULL)->disk_blocknr) + datasize; | |
961 | } | |
962 | ||
963 | static inline u32 btrfs_file_extent_inline_len(struct btrfs_item *e) | |
964 | { | |
965 | struct btrfs_file_extent_item *fe = NULL; | |
966 | return btrfs_item_size(e) - (unsigned long)(&fe->disk_blocknr); | |
967 | } | |
968 | ||
9f5fae2f CM |
969 | static inline u64 btrfs_file_extent_disk_blocknr(struct btrfs_file_extent_item |
970 | *e) | |
971 | { | |
972 | return le64_to_cpu(e->disk_blocknr); | |
973 | } | |
974 | ||
975 | static inline void btrfs_set_file_extent_disk_blocknr(struct | |
976 | btrfs_file_extent_item | |
977 | *e, u64 val) | |
978 | { | |
979 | e->disk_blocknr = cpu_to_le64(val); | |
980 | } | |
981 | ||
71951f35 CM |
982 | static inline u64 btrfs_file_extent_generation(struct btrfs_file_extent_item *e) |
983 | { | |
984 | return le64_to_cpu(e->generation); | |
985 | } | |
986 | ||
987 | static inline void btrfs_set_file_extent_generation(struct | |
988 | btrfs_file_extent_item *e, | |
989 | u64 val) | |
990 | { | |
991 | e->generation = cpu_to_le64(val); | |
992 | } | |
993 | ||
9f5fae2f CM |
994 | static inline u64 btrfs_file_extent_disk_num_blocks(struct |
995 | btrfs_file_extent_item *e) | |
996 | { | |
997 | return le64_to_cpu(e->disk_num_blocks); | |
998 | } | |
999 | ||
1000 | static inline void btrfs_set_file_extent_disk_num_blocks(struct | |
1001 | btrfs_file_extent_item | |
1002 | *e, u64 val) | |
1003 | { | |
1004 | e->disk_num_blocks = cpu_to_le64(val); | |
1005 | } | |
1006 | ||
1007 | static inline u64 btrfs_file_extent_offset(struct btrfs_file_extent_item *e) | |
1008 | { | |
1009 | return le64_to_cpu(e->offset); | |
1010 | } | |
1011 | ||
1012 | static inline void btrfs_set_file_extent_offset(struct btrfs_file_extent_item | |
1013 | *e, u64 val) | |
1014 | { | |
1015 | e->offset = cpu_to_le64(val); | |
1016 | } | |
1017 | ||
1018 | static inline u64 btrfs_file_extent_num_blocks(struct btrfs_file_extent_item | |
1019 | *e) | |
1020 | { | |
1021 | return le64_to_cpu(e->num_blocks); | |
1022 | } | |
1023 | ||
1024 | static inline void btrfs_set_file_extent_num_blocks(struct | |
1025 | btrfs_file_extent_item *e, | |
1026 | u64 val) | |
1027 | { | |
1028 | e->num_blocks = cpu_to_le64(val); | |
1029 | } | |
1030 | ||
0bd93ba0 CM |
1031 | static inline u16 btrfs_device_pathlen(struct btrfs_device_item *d) |
1032 | { | |
1033 | return le16_to_cpu(d->pathlen); | |
1034 | } | |
1035 | ||
1036 | static inline void btrfs_set_device_pathlen(struct btrfs_device_item *d, | |
1037 | u16 val) | |
1038 | { | |
1039 | d->pathlen = cpu_to_le16(val); | |
1040 | } | |
1041 | ||
b4100d64 CM |
1042 | static inline u64 btrfs_device_id(struct btrfs_device_item *d) |
1043 | { | |
1044 | return le64_to_cpu(d->device_id); | |
1045 | } | |
1046 | ||
1047 | static inline void btrfs_set_device_id(struct btrfs_device_item *d, | |
1048 | u64 val) | |
1049 | { | |
1050 | d->device_id = cpu_to_le64(val); | |
1051 | } | |
1052 | ||
e20d96d6 CM |
1053 | static inline struct btrfs_root *btrfs_sb(struct super_block *sb) |
1054 | { | |
1055 | return sb->s_fs_info; | |
1056 | } | |
1057 | ||
d6025579 CM |
1058 | static inline void btrfs_check_bounds(void *vptr, size_t len, |
1059 | void *vcontainer, size_t container_len) | |
1060 | { | |
1061 | char *ptr = vptr; | |
1062 | char *container = vcontainer; | |
1063 | WARN_ON(ptr < container); | |
1064 | WARN_ON(ptr + len > container + container_len); | |
1065 | } | |
1066 | ||
1067 | static inline void btrfs_memcpy(struct btrfs_root *root, | |
1068 | void *dst_block, | |
1069 | void *dst, const void *src, size_t nr) | |
1070 | { | |
1071 | btrfs_check_bounds(dst, nr, dst_block, root->fs_info->sb->s_blocksize); | |
1072 | memcpy(dst, src, nr); | |
1073 | } | |
1074 | ||
1075 | static inline void btrfs_memmove(struct btrfs_root *root, | |
1076 | void *dst_block, | |
1077 | void *dst, void *src, size_t nr) | |
1078 | { | |
1079 | btrfs_check_bounds(dst, nr, dst_block, root->fs_info->sb->s_blocksize); | |
1080 | memmove(dst, src, nr); | |
1081 | } | |
1082 | ||
1083 | static inline void btrfs_mark_buffer_dirty(struct buffer_head *bh) | |
1084 | { | |
1085 | WARN_ON(!atomic_read(&bh->b_count)); | |
1086 | mark_buffer_dirty(bh); | |
1087 | } | |
1088 | ||
4beb1b8b CM |
1089 | /* helper function to cast into the data area of the leaf. */ |
1090 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 CM |
1091 | ((type *)(btrfs_leaf_data(leaf) + \ |
1092 | btrfs_item_offset((leaf)->items + (slot)))) | |
4beb1b8b | 1093 | |
b18c6685 | 1094 | /* extent-tree.c */ |
31f3c99b CM |
1095 | struct btrfs_block_group_cache *btrfs_find_block_group(struct btrfs_root *root, |
1096 | struct btrfs_block_group_cache | |
be744175 | 1097 | *hint, u64 search_start, |
de428b63 | 1098 | int data, int owner); |
c5739bba CM |
1099 | int btrfs_inc_root_ref(struct btrfs_trans_handle *trans, |
1100 | struct btrfs_root *root); | |
e20d96d6 | 1101 | struct buffer_head *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
31f3c99b | 1102 | struct btrfs_root *root, u64 hint); |
4d775673 CM |
1103 | int btrfs_alloc_extent(struct btrfs_trans_handle *trans, |
1104 | struct btrfs_root *root, u64 owner, | |
c62a1920 | 1105 | u64 num_blocks, u64 search_start, |
be08c1b9 | 1106 | u64 search_end, struct btrfs_key *ins, int data); |
e089f05c | 1107 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e20d96d6 | 1108 | struct buffer_head *buf); |
e089f05c CM |
1109 | int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root |
1110 | *root, u64 blocknr, u64 num_blocks, int pin); | |
dee26a9f CM |
1111 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, struct |
1112 | btrfs_root *root); | |
b18c6685 CM |
1113 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
1114 | struct btrfs_root *root, | |
1115 | u64 blocknr, u64 num_blocks); | |
9078a3e1 CM |
1116 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
1117 | struct btrfs_root *root); | |
1118 | int btrfs_free_block_groups(struct btrfs_fs_info *info); | |
1119 | int btrfs_read_block_groups(struct btrfs_root *root); | |
dee26a9f | 1120 | /* ctree.c */ |
6567e837 CM |
1121 | int btrfs_extend_item(struct btrfs_trans_handle *trans, struct btrfs_root |
1122 | *root, struct btrfs_path *path, u32 data_size); | |
b18c6685 CM |
1123 | int btrfs_truncate_item(struct btrfs_trans_handle *trans, |
1124 | struct btrfs_root *root, | |
1125 | struct btrfs_path *path, | |
1126 | u32 new_size); | |
e089f05c CM |
1127 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
1128 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
1129 | ins_len, int cow); | |
234b63a0 | 1130 | void btrfs_release_path(struct btrfs_root *root, struct btrfs_path *p); |
2c90e5d6 CM |
1131 | struct btrfs_path *btrfs_alloc_path(void); |
1132 | void btrfs_free_path(struct btrfs_path *p); | |
234b63a0 | 1133 | void btrfs_init_path(struct btrfs_path *p); |
e089f05c CM |
1134 | int btrfs_del_item(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1135 | struct btrfs_path *path); | |
1136 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root | |
1137 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
1138 | int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, struct btrfs_root | |
1139 | *root, struct btrfs_path *path, struct btrfs_key | |
1140 | *cpu_key, u32 data_size); | |
234b63a0 | 1141 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
123abc88 | 1142 | int btrfs_leaf_free_space(struct btrfs_root *root, struct btrfs_leaf *leaf); |
e089f05c | 1143 | int btrfs_drop_snapshot(struct btrfs_trans_handle *trans, struct btrfs_root |
e20d96d6 | 1144 | *root, struct buffer_head *snap); |
dee26a9f | 1145 | /* root-item.c */ |
e089f05c CM |
1146 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1147 | struct btrfs_key *key); | |
1148 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1149 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1150 | *item); | |
1151 | int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1152 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1153 | *item); | |
1154 | int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct | |
1155 | btrfs_root_item *item, struct btrfs_key *key); | |
dee26a9f | 1156 | /* dir-item.c */ |
e089f05c | 1157 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
1158 | *root, const char *name, int name_len, u64 dir, |
1159 | struct btrfs_key *location, u8 type); | |
7e38180e CM |
1160 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
1161 | struct btrfs_root *root, | |
1162 | struct btrfs_path *path, u64 dir, | |
1163 | const char *name, int name_len, | |
1164 | int mod); | |
1165 | struct btrfs_dir_item * | |
1166 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
1167 | struct btrfs_root *root, | |
1168 | struct btrfs_path *path, u64 dir, | |
1169 | u64 objectid, const char *name, int name_len, | |
1170 | int mod); | |
1171 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, | |
1172 | struct btrfs_path *path, | |
7f5c1516 | 1173 | const char *name, int name_len); |
7e38180e CM |
1174 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
1175 | struct btrfs_root *root, | |
1176 | struct btrfs_path *path, | |
1177 | struct btrfs_dir_item *di); | |
dee26a9f | 1178 | /* inode-map.c */ |
9f5fae2f CM |
1179 | int btrfs_find_free_objectid(struct btrfs_trans_handle *trans, |
1180 | struct btrfs_root *fs_root, | |
1181 | u64 dirid, u64 *objectid); | |
5be6f7f1 CM |
1182 | int btrfs_find_highest_inode(struct btrfs_root *fs_root, u64 *objectid); |
1183 | ||
dee26a9f | 1184 | /* inode-item.c */ |
293ffd5f CM |
1185 | int btrfs_insert_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
1186 | *root, u64 objectid, struct btrfs_inode_item | |
1187 | *inode_item); | |
1188 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root | |
d6e4a428 CM |
1189 | *root, struct btrfs_path *path, |
1190 | struct btrfs_key *location, int mod); | |
dee26a9f CM |
1191 | |
1192 | /* file-item.c */ | |
b18c6685 | 1193 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
dee26a9f | 1194 | struct btrfs_root *root, |
b18c6685 | 1195 | u64 objectid, u64 pos, u64 offset, |
3a686375 | 1196 | u64 disk_num_blocks, |
b18c6685 | 1197 | u64 num_blocks); |
dee26a9f CM |
1198 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
1199 | struct btrfs_root *root, | |
1200 | struct btrfs_path *path, u64 objectid, | |
9773a788 | 1201 | u64 blocknr, int mod); |
f254e52c CM |
1202 | int btrfs_csum_file_block(struct btrfs_trans_handle *trans, |
1203 | struct btrfs_root *root, | |
1204 | u64 objectid, u64 offset, | |
1205 | char *data, size_t len); | |
1206 | int btrfs_csum_verify_file_block(struct btrfs_root *root, | |
1207 | u64 objectid, u64 offset, | |
1208 | char *data, size_t len); | |
b18c6685 CM |
1209 | struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans, |
1210 | struct btrfs_root *root, | |
1211 | struct btrfs_path *path, | |
1212 | u64 objectid, u64 offset, | |
1213 | int cow); | |
1de037a4 CM |
1214 | int btrfs_csum_truncate(struct btrfs_trans_handle *trans, |
1215 | struct btrfs_root *root, struct btrfs_path *path, | |
1216 | u64 isize); | |
d6e4a428 | 1217 | /* super.c */ |
eb60ceac | 1218 | #endif |