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> |
08607c1b | 6 | #include <linux/workqueue.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; |
08607c1b | 284 | |
9f5fae2f | 285 | struct btrfs_fs_info { |
62e2749e CM |
286 | struct btrfs_root *extent_root; |
287 | struct btrfs_root *tree_root; | |
0bd93ba0 | 288 | struct btrfs_root *dev_root; |
0f7d52f4 | 289 | struct radix_tree_root fs_roots_radix; |
8ef97622 | 290 | struct radix_tree_root pending_del_radix; |
62e2749e | 291 | struct radix_tree_root pinned_radix; |
7eccb903 | 292 | struct radix_tree_root dev_radix; |
9078a3e1 | 293 | struct radix_tree_root block_group_radix; |
be744175 | 294 | struct radix_tree_root block_group_data_radix; |
e37c9e69 | 295 | struct radix_tree_root extent_map_radix; |
f2458e1d CM |
296 | |
297 | u64 extent_tree_insert[BTRFS_MAX_LEVEL * 3]; | |
298 | int extent_tree_insert_nr; | |
299 | u64 extent_tree_prealloc[BTRFS_MAX_LEVEL * 3]; | |
300 | int extent_tree_prealloc_nr; | |
301 | ||
293ffd5f | 302 | u64 generation; |
79154b1b | 303 | struct btrfs_transaction *running_transaction; |
1261ec42 | 304 | struct btrfs_super_block *disk_super; |
e20d96d6 CM |
305 | struct buffer_head *sb_buffer; |
306 | struct super_block *sb; | |
d98237b3 | 307 | struct inode *btree_inode; |
79154b1b | 308 | struct mutex trans_mutex; |
d561c025 | 309 | struct mutex fs_mutex; |
8fd17795 | 310 | struct list_head trans_list; |
87cbda5c | 311 | struct crypto_hash *hash_tfm; |
08607c1b | 312 | struct delayed_work trans_work; |
87cbda5c | 313 | spinlock_t hash_lock; |
e66f709b | 314 | int do_barriers; |
9f5fae2f CM |
315 | }; |
316 | ||
317 | /* | |
318 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 319 | * and for the extent tree extent_root root. |
9f5fae2f CM |
320 | */ |
321 | struct btrfs_root { | |
e20d96d6 CM |
322 | struct buffer_head *node; |
323 | struct buffer_head *commit_root; | |
62e2749e CM |
324 | struct btrfs_root_item root_item; |
325 | struct btrfs_key root_key; | |
9f5fae2f | 326 | struct btrfs_fs_info *fs_info; |
0f7d52f4 CM |
327 | struct inode *inode; |
328 | u64 objectid; | |
329 | u64 last_trans; | |
62e2749e | 330 | u32 blocksize; |
9f5fae2f CM |
331 | int ref_cows; |
332 | u32 type; | |
1b05da2e CM |
333 | u64 highest_inode; |
334 | u64 last_inode_alloc; | |
62e2749e CM |
335 | }; |
336 | ||
62e2749e CM |
337 | /* the lower bits in the key flags defines the item type */ |
338 | #define BTRFS_KEY_TYPE_MAX 256 | |
a429e513 CM |
339 | #define BTRFS_KEY_TYPE_SHIFT 24 |
340 | #define BTRFS_KEY_TYPE_MASK (((u32)BTRFS_KEY_TYPE_MAX - 1) << \ | |
341 | BTRFS_KEY_TYPE_SHIFT) | |
1e1d2701 CM |
342 | |
343 | /* | |
344 | * inode items have the data typically returned from stat and store other | |
345 | * info about object characteristics. There is one for every file and dir in | |
346 | * the FS | |
347 | */ | |
9078a3e1 CM |
348 | #define BTRFS_INODE_ITEM_KEY 1 |
349 | ||
350 | /* reserve 2-15 close to the inode for later flexibility */ | |
1e1d2701 CM |
351 | |
352 | /* | |
353 | * dir items are the name -> inode pointers in a directory. There is one | |
354 | * for every name in a directory. | |
355 | */ | |
9078a3e1 CM |
356 | #define BTRFS_DIR_ITEM_KEY 16 |
357 | #define BTRFS_DIR_INDEX_KEY 17 | |
1e1d2701 | 358 | /* |
9078a3e1 | 359 | * extent data is for file data |
1e1d2701 | 360 | */ |
9078a3e1 | 361 | #define BTRFS_EXTENT_DATA_KEY 18 |
f254e52c CM |
362 | /* |
363 | * csum items have the checksums for data in the extents | |
364 | */ | |
9078a3e1 CM |
365 | #define BTRFS_CSUM_ITEM_KEY 19 |
366 | ||
367 | /* reserve 20-31 for other file stuff */ | |
f254e52c | 368 | |
1e1d2701 CM |
369 | /* |
370 | * root items point to tree roots. There are typically in the root | |
371 | * tree used by the super block to find all the other trees | |
372 | */ | |
9078a3e1 | 373 | #define BTRFS_ROOT_ITEM_KEY 32 |
1e1d2701 CM |
374 | /* |
375 | * extent items are in the extent map tree. These record which blocks | |
376 | * are used, and how many references there are to each block | |
377 | */ | |
9078a3e1 CM |
378 | #define BTRFS_EXTENT_ITEM_KEY 33 |
379 | ||
380 | /* | |
381 | * block groups give us hints into the extent allocation trees. Which | |
382 | * blocks are free etc etc | |
383 | */ | |
384 | #define BTRFS_BLOCK_GROUP_ITEM_KEY 34 | |
9f5fae2f | 385 | |
0bd93ba0 CM |
386 | /* |
387 | * dev items list the devices that make up the FS | |
388 | */ | |
9078a3e1 | 389 | #define BTRFS_DEV_ITEM_KEY 35 |
0bd93ba0 | 390 | |
1e1d2701 CM |
391 | /* |
392 | * string items are for debugging. They just store a short string of | |
393 | * data in the FS | |
394 | */ | |
9078a3e1 CM |
395 | #define BTRFS_STRING_ITEM_KEY 253 |
396 | ||
397 | ||
398 | static inline u64 btrfs_block_group_used(struct btrfs_block_group_item *bi) | |
399 | { | |
400 | return le64_to_cpu(bi->used); | |
401 | } | |
402 | ||
403 | static inline void btrfs_set_block_group_used(struct | |
404 | btrfs_block_group_item *bi, | |
405 | u64 val) | |
406 | { | |
407 | bi->used = cpu_to_le64(val); | |
408 | } | |
1e1d2701 CM |
409 | |
410 | static inline u64 btrfs_inode_generation(struct btrfs_inode_item *i) | |
411 | { | |
412 | return le64_to_cpu(i->generation); | |
413 | } | |
414 | ||
415 | static inline void btrfs_set_inode_generation(struct btrfs_inode_item *i, | |
416 | u64 val) | |
417 | { | |
418 | i->generation = cpu_to_le64(val); | |
419 | } | |
420 | ||
421 | static inline u64 btrfs_inode_size(struct btrfs_inode_item *i) | |
422 | { | |
423 | return le64_to_cpu(i->size); | |
424 | } | |
425 | ||
426 | static inline void btrfs_set_inode_size(struct btrfs_inode_item *i, u64 val) | |
427 | { | |
428 | i->size = cpu_to_le64(val); | |
429 | } | |
430 | ||
431 | static inline u64 btrfs_inode_nblocks(struct btrfs_inode_item *i) | |
432 | { | |
433 | return le64_to_cpu(i->nblocks); | |
434 | } | |
435 | ||
436 | static inline void btrfs_set_inode_nblocks(struct btrfs_inode_item *i, u64 val) | |
437 | { | |
438 | i->nblocks = cpu_to_le64(val); | |
439 | } | |
440 | ||
31f3c99b CM |
441 | static inline u64 btrfs_inode_block_group(struct btrfs_inode_item *i) |
442 | { | |
443 | return le64_to_cpu(i->block_group); | |
444 | } | |
445 | ||
446 | static inline void btrfs_set_inode_block_group(struct btrfs_inode_item *i, | |
447 | u64 val) | |
448 | { | |
449 | i->block_group = cpu_to_le64(val); | |
450 | } | |
451 | ||
1e1d2701 CM |
452 | static inline u32 btrfs_inode_nlink(struct btrfs_inode_item *i) |
453 | { | |
454 | return le32_to_cpu(i->nlink); | |
455 | } | |
456 | ||
457 | static inline void btrfs_set_inode_nlink(struct btrfs_inode_item *i, u32 val) | |
458 | { | |
459 | i->nlink = cpu_to_le32(val); | |
460 | } | |
461 | ||
462 | static inline u32 btrfs_inode_uid(struct btrfs_inode_item *i) | |
463 | { | |
464 | return le32_to_cpu(i->uid); | |
465 | } | |
466 | ||
467 | static inline void btrfs_set_inode_uid(struct btrfs_inode_item *i, u32 val) | |
468 | { | |
469 | i->uid = cpu_to_le32(val); | |
470 | } | |
471 | ||
472 | static inline u32 btrfs_inode_gid(struct btrfs_inode_item *i) | |
473 | { | |
474 | return le32_to_cpu(i->gid); | |
475 | } | |
476 | ||
477 | static inline void btrfs_set_inode_gid(struct btrfs_inode_item *i, u32 val) | |
478 | { | |
479 | i->gid = cpu_to_le32(val); | |
480 | } | |
481 | ||
482 | static inline u32 btrfs_inode_mode(struct btrfs_inode_item *i) | |
483 | { | |
484 | return le32_to_cpu(i->mode); | |
485 | } | |
486 | ||
487 | static inline void btrfs_set_inode_mode(struct btrfs_inode_item *i, u32 val) | |
488 | { | |
489 | i->mode = cpu_to_le32(val); | |
490 | } | |
491 | ||
492 | static inline u32 btrfs_inode_rdev(struct btrfs_inode_item *i) | |
493 | { | |
494 | return le32_to_cpu(i->rdev); | |
495 | } | |
496 | ||
497 | static inline void btrfs_set_inode_rdev(struct btrfs_inode_item *i, u32 val) | |
498 | { | |
499 | i->rdev = cpu_to_le32(val); | |
500 | } | |
501 | ||
502 | static inline u16 btrfs_inode_flags(struct btrfs_inode_item *i) | |
503 | { | |
504 | return le16_to_cpu(i->flags); | |
505 | } | |
506 | ||
507 | static inline void btrfs_set_inode_flags(struct btrfs_inode_item *i, u16 val) | |
508 | { | |
509 | i->flags = cpu_to_le16(val); | |
510 | } | |
511 | ||
512 | static inline u16 btrfs_inode_compat_flags(struct btrfs_inode_item *i) | |
513 | { | |
514 | return le16_to_cpu(i->compat_flags); | |
515 | } | |
516 | ||
517 | static inline void btrfs_set_inode_compat_flags(struct btrfs_inode_item *i, | |
518 | u16 val) | |
519 | { | |
520 | i->compat_flags = cpu_to_le16(val); | |
521 | } | |
522 | ||
f254e52c | 523 | static inline u64 btrfs_timespec_sec(struct btrfs_inode_timespec *ts) |
e20d96d6 | 524 | { |
f254e52c | 525 | return le64_to_cpu(ts->sec); |
e20d96d6 CM |
526 | } |
527 | ||
528 | static inline void btrfs_set_timespec_sec(struct btrfs_inode_timespec *ts, | |
f254e52c | 529 | u64 val) |
e20d96d6 | 530 | { |
f254e52c | 531 | ts->sec = cpu_to_le64(val); |
e20d96d6 CM |
532 | } |
533 | ||
534 | static inline u32 btrfs_timespec_nsec(struct btrfs_inode_timespec *ts) | |
535 | { | |
536 | return le32_to_cpu(ts->nsec); | |
537 | } | |
538 | ||
539 | static inline void btrfs_set_timespec_nsec(struct btrfs_inode_timespec *ts, | |
540 | u32 val) | |
541 | { | |
542 | ts->nsec = cpu_to_le32(val); | |
543 | } | |
544 | ||
234b63a0 | 545 | static inline u32 btrfs_extent_refs(struct btrfs_extent_item *ei) |
cf27e1ee CM |
546 | { |
547 | return le32_to_cpu(ei->refs); | |
548 | } | |
549 | ||
234b63a0 | 550 | static inline void btrfs_set_extent_refs(struct btrfs_extent_item *ei, u32 val) |
cf27e1ee CM |
551 | { |
552 | ei->refs = cpu_to_le32(val); | |
553 | } | |
554 | ||
4d775673 CM |
555 | static inline u64 btrfs_extent_owner(struct btrfs_extent_item *ei) |
556 | { | |
557 | return le64_to_cpu(ei->owner); | |
558 | } | |
559 | ||
560 | static inline void btrfs_set_extent_owner(struct btrfs_extent_item *ei, u64 val) | |
561 | { | |
562 | ei->owner = cpu_to_le64(val); | |
563 | } | |
564 | ||
234b63a0 | 565 | static inline u64 btrfs_node_blockptr(struct btrfs_node *n, int nr) |
1d4f8a0c | 566 | { |
123abc88 | 567 | return le64_to_cpu(n->ptrs[nr].blockptr); |
1d4f8a0c CM |
568 | } |
569 | ||
4d775673 | 570 | |
234b63a0 CM |
571 | static inline void btrfs_set_node_blockptr(struct btrfs_node *n, int nr, |
572 | u64 val) | |
1d4f8a0c | 573 | { |
123abc88 | 574 | n->ptrs[nr].blockptr = cpu_to_le64(val); |
1d4f8a0c CM |
575 | } |
576 | ||
123abc88 | 577 | static inline u32 btrfs_item_offset(struct btrfs_item *item) |
0783fcfc | 578 | { |
123abc88 | 579 | return le32_to_cpu(item->offset); |
0783fcfc CM |
580 | } |
581 | ||
123abc88 | 582 | static inline void btrfs_set_item_offset(struct btrfs_item *item, u32 val) |
0783fcfc | 583 | { |
123abc88 | 584 | item->offset = cpu_to_le32(val); |
0783fcfc CM |
585 | } |
586 | ||
123abc88 | 587 | static inline u32 btrfs_item_end(struct btrfs_item *item) |
0783fcfc | 588 | { |
123abc88 | 589 | return le32_to_cpu(item->offset) + le16_to_cpu(item->size); |
0783fcfc CM |
590 | } |
591 | ||
592 | static inline u16 btrfs_item_size(struct btrfs_item *item) | |
593 | { | |
594 | return le16_to_cpu(item->size); | |
595 | } | |
596 | ||
597 | static inline void btrfs_set_item_size(struct btrfs_item *item, u16 val) | |
598 | { | |
599 | item->size = cpu_to_le16(val); | |
600 | } | |
601 | ||
1d4f6404 CM |
602 | static inline u16 btrfs_dir_flags(struct btrfs_dir_item *d) |
603 | { | |
604 | return le16_to_cpu(d->flags); | |
605 | } | |
606 | ||
607 | static inline void btrfs_set_dir_flags(struct btrfs_dir_item *d, u16 val) | |
608 | { | |
609 | d->flags = cpu_to_le16(val); | |
610 | } | |
611 | ||
612 | static inline u8 btrfs_dir_type(struct btrfs_dir_item *d) | |
613 | { | |
614 | return d->type; | |
615 | } | |
616 | ||
617 | static inline void btrfs_set_dir_type(struct btrfs_dir_item *d, u8 val) | |
618 | { | |
619 | d->type = val; | |
620 | } | |
621 | ||
a8a2ee0c CM |
622 | static inline u16 btrfs_dir_name_len(struct btrfs_dir_item *d) |
623 | { | |
624 | return le16_to_cpu(d->name_len); | |
625 | } | |
626 | ||
627 | static inline void btrfs_set_dir_name_len(struct btrfs_dir_item *d, u16 val) | |
1d4f6404 | 628 | { |
a8a2ee0c | 629 | d->name_len = cpu_to_le16(val); |
1d4f6404 CM |
630 | } |
631 | ||
e2fa7227 CM |
632 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
633 | struct btrfs_disk_key *disk) | |
634 | { | |
635 | cpu->offset = le64_to_cpu(disk->offset); | |
636 | cpu->flags = le32_to_cpu(disk->flags); | |
637 | cpu->objectid = le64_to_cpu(disk->objectid); | |
638 | } | |
639 | ||
640 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
641 | struct btrfs_key *cpu) | |
642 | { | |
643 | disk->offset = cpu_to_le64(cpu->offset); | |
644 | disk->flags = cpu_to_le32(cpu->flags); | |
645 | disk->objectid = cpu_to_le64(cpu->objectid); | |
646 | } | |
647 | ||
62e2749e | 648 | static inline u64 btrfs_disk_key_objectid(struct btrfs_disk_key *disk) |
e2fa7227 CM |
649 | { |
650 | return le64_to_cpu(disk->objectid); | |
651 | } | |
652 | ||
62e2749e CM |
653 | static inline void btrfs_set_disk_key_objectid(struct btrfs_disk_key *disk, |
654 | u64 val) | |
e2fa7227 CM |
655 | { |
656 | disk->objectid = cpu_to_le64(val); | |
657 | } | |
658 | ||
62e2749e | 659 | static inline u64 btrfs_disk_key_offset(struct btrfs_disk_key *disk) |
e2fa7227 CM |
660 | { |
661 | return le64_to_cpu(disk->offset); | |
662 | } | |
663 | ||
62e2749e CM |
664 | static inline void btrfs_set_disk_key_offset(struct btrfs_disk_key *disk, |
665 | u64 val) | |
e2fa7227 CM |
666 | { |
667 | disk->offset = cpu_to_le64(val); | |
668 | } | |
669 | ||
62e2749e | 670 | static inline u32 btrfs_disk_key_flags(struct btrfs_disk_key *disk) |
e2fa7227 CM |
671 | { |
672 | return le32_to_cpu(disk->flags); | |
673 | } | |
674 | ||
62e2749e CM |
675 | static inline void btrfs_set_disk_key_flags(struct btrfs_disk_key *disk, |
676 | u32 val) | |
e2fa7227 CM |
677 | { |
678 | disk->flags = cpu_to_le32(val); | |
679 | } | |
680 | ||
a429e513 | 681 | static inline u32 btrfs_disk_key_type(struct btrfs_disk_key *key) |
7fcde0e3 | 682 | { |
a429e513 | 683 | return le32_to_cpu(key->flags) >> BTRFS_KEY_TYPE_SHIFT; |
7fcde0e3 CM |
684 | } |
685 | ||
a429e513 CM |
686 | static inline void btrfs_set_disk_key_type(struct btrfs_disk_key *key, |
687 | u32 val) | |
7fcde0e3 | 688 | { |
a429e513 CM |
689 | u32 flags = btrfs_disk_key_flags(key); |
690 | BUG_ON(val >= BTRFS_KEY_TYPE_MAX); | |
691 | val = val << BTRFS_KEY_TYPE_SHIFT; | |
692 | flags = (flags & ~BTRFS_KEY_TYPE_MASK) | val; | |
693 | btrfs_set_disk_key_flags(key, flags); | |
7fcde0e3 CM |
694 | } |
695 | ||
62e2749e CM |
696 | static inline u32 btrfs_key_type(struct btrfs_key *key) |
697 | { | |
a429e513 | 698 | return key->flags >> BTRFS_KEY_TYPE_SHIFT; |
62e2749e CM |
699 | } |
700 | ||
a429e513 | 701 | static inline void btrfs_set_key_type(struct btrfs_key *key, u32 val) |
62e2749e | 702 | { |
a429e513 CM |
703 | BUG_ON(val >= BTRFS_KEY_TYPE_MAX); |
704 | val = val << BTRFS_KEY_TYPE_SHIFT; | |
705 | key->flags = (key->flags & ~(BTRFS_KEY_TYPE_MASK)) | val; | |
62e2749e CM |
706 | } |
707 | ||
bb492bb0 | 708 | static inline u64 btrfs_header_blocknr(struct btrfs_header *h) |
7518a238 | 709 | { |
bb492bb0 | 710 | return le64_to_cpu(h->blocknr); |
7518a238 CM |
711 | } |
712 | ||
bb492bb0 | 713 | static inline void btrfs_set_header_blocknr(struct btrfs_header *h, u64 blocknr) |
7518a238 | 714 | { |
bb492bb0 | 715 | h->blocknr = cpu_to_le64(blocknr); |
7518a238 CM |
716 | } |
717 | ||
7f5c1516 CM |
718 | static inline u64 btrfs_header_generation(struct btrfs_header *h) |
719 | { | |
720 | return le64_to_cpu(h->generation); | |
721 | } | |
722 | ||
723 | static inline void btrfs_set_header_generation(struct btrfs_header *h, | |
724 | u64 val) | |
725 | { | |
726 | h->generation = cpu_to_le64(val); | |
727 | } | |
728 | ||
4d775673 CM |
729 | static inline u64 btrfs_header_owner(struct btrfs_header *h) |
730 | { | |
731 | return le64_to_cpu(h->owner); | |
732 | } | |
733 | ||
734 | static inline void btrfs_set_header_owner(struct btrfs_header *h, | |
735 | u64 val) | |
736 | { | |
737 | h->owner = cpu_to_le64(val); | |
738 | } | |
739 | ||
bb492bb0 | 740 | static inline u16 btrfs_header_nritems(struct btrfs_header *h) |
7518a238 | 741 | { |
bb492bb0 | 742 | return le16_to_cpu(h->nritems); |
7518a238 CM |
743 | } |
744 | ||
bb492bb0 | 745 | static inline void btrfs_set_header_nritems(struct btrfs_header *h, u16 val) |
7518a238 | 746 | { |
bb492bb0 | 747 | h->nritems = cpu_to_le16(val); |
7518a238 CM |
748 | } |
749 | ||
bb492bb0 | 750 | static inline u16 btrfs_header_flags(struct btrfs_header *h) |
7518a238 | 751 | { |
bb492bb0 | 752 | return le16_to_cpu(h->flags); |
7518a238 CM |
753 | } |
754 | ||
bb492bb0 | 755 | static inline void btrfs_set_header_flags(struct btrfs_header *h, u16 val) |
7518a238 | 756 | { |
bb492bb0 | 757 | h->flags = cpu_to_le16(val); |
7518a238 CM |
758 | } |
759 | ||
bb492bb0 | 760 | static inline int btrfs_header_level(struct btrfs_header *h) |
7518a238 | 761 | { |
9a6f11ed | 762 | return h->level; |
7518a238 CM |
763 | } |
764 | ||
bb492bb0 | 765 | static inline void btrfs_set_header_level(struct btrfs_header *h, int level) |
7518a238 | 766 | { |
234b63a0 | 767 | BUG_ON(level > BTRFS_MAX_LEVEL); |
9a6f11ed | 768 | h->level = level; |
7518a238 CM |
769 | } |
770 | ||
234b63a0 | 771 | static inline int btrfs_is_leaf(struct btrfs_node *n) |
7518a238 CM |
772 | { |
773 | return (btrfs_header_level(&n->header) == 0); | |
774 | } | |
775 | ||
3768f368 CM |
776 | static inline u64 btrfs_root_blocknr(struct btrfs_root_item *item) |
777 | { | |
778 | return le64_to_cpu(item->blocknr); | |
779 | } | |
780 | ||
781 | static inline void btrfs_set_root_blocknr(struct btrfs_root_item *item, u64 val) | |
782 | { | |
783 | item->blocknr = cpu_to_le64(val); | |
784 | } | |
785 | ||
d6e4a428 CM |
786 | static inline u64 btrfs_root_dirid(struct btrfs_root_item *item) |
787 | { | |
788 | return le64_to_cpu(item->root_dirid); | |
789 | } | |
790 | ||
791 | static inline void btrfs_set_root_dirid(struct btrfs_root_item *item, u64 val) | |
792 | { | |
793 | item->root_dirid = cpu_to_le64(val); | |
794 | } | |
795 | ||
3768f368 CM |
796 | static inline u32 btrfs_root_refs(struct btrfs_root_item *item) |
797 | { | |
798 | return le32_to_cpu(item->refs); | |
799 | } | |
800 | ||
801 | static inline void btrfs_set_root_refs(struct btrfs_root_item *item, u32 val) | |
802 | { | |
803 | item->refs = cpu_to_le32(val); | |
804 | } | |
805 | ||
806 | static inline u64 btrfs_super_blocknr(struct btrfs_super_block *s) | |
807 | { | |
808 | return le64_to_cpu(s->blocknr); | |
809 | } | |
810 | ||
811 | static inline void btrfs_set_super_blocknr(struct btrfs_super_block *s, u64 val) | |
812 | { | |
813 | s->blocknr = cpu_to_le64(val); | |
814 | } | |
815 | ||
0f7d52f4 CM |
816 | static inline u64 btrfs_super_generation(struct btrfs_super_block *s) |
817 | { | |
818 | return le64_to_cpu(s->generation); | |
819 | } | |
820 | ||
821 | static inline void btrfs_set_super_generation(struct btrfs_super_block *s, | |
822 | u64 val) | |
823 | { | |
824 | s->generation = cpu_to_le64(val); | |
825 | } | |
826 | ||
3768f368 CM |
827 | static inline u64 btrfs_super_root(struct btrfs_super_block *s) |
828 | { | |
829 | return le64_to_cpu(s->root); | |
830 | } | |
831 | ||
832 | static inline void btrfs_set_super_root(struct btrfs_super_block *s, u64 val) | |
833 | { | |
834 | s->root = cpu_to_le64(val); | |
835 | } | |
836 | ||
837 | static inline u64 btrfs_super_total_blocks(struct btrfs_super_block *s) | |
838 | { | |
839 | return le64_to_cpu(s->total_blocks); | |
840 | } | |
841 | ||
842 | static inline void btrfs_set_super_total_blocks(struct btrfs_super_block *s, | |
843 | u64 val) | |
844 | { | |
845 | s->total_blocks = cpu_to_le64(val); | |
846 | } | |
847 | ||
848 | static inline u64 btrfs_super_blocks_used(struct btrfs_super_block *s) | |
849 | { | |
850 | return le64_to_cpu(s->blocks_used); | |
851 | } | |
852 | ||
853 | static inline void btrfs_set_super_blocks_used(struct btrfs_super_block *s, | |
854 | u64 val) | |
855 | { | |
856 | s->blocks_used = cpu_to_le64(val); | |
857 | } | |
858 | ||
123abc88 | 859 | static inline u32 btrfs_super_blocksize(struct btrfs_super_block *s) |
3768f368 | 860 | { |
123abc88 | 861 | return le32_to_cpu(s->blocksize); |
3768f368 CM |
862 | } |
863 | ||
864 | static inline void btrfs_set_super_blocksize(struct btrfs_super_block *s, | |
123abc88 CM |
865 | u32 val) |
866 | { | |
867 | s->blocksize = cpu_to_le32(val); | |
868 | } | |
869 | ||
2e635a27 CM |
870 | static inline u64 btrfs_super_root_dir(struct btrfs_super_block *s) |
871 | { | |
872 | return le64_to_cpu(s->root_dir_objectid); | |
873 | } | |
874 | ||
875 | static inline void btrfs_set_super_root_dir(struct btrfs_super_block *s, u64 | |
876 | val) | |
877 | { | |
878 | s->root_dir_objectid = cpu_to_le64(val); | |
879 | } | |
880 | ||
b4100d64 CM |
881 | static inline u64 btrfs_super_last_device_id(struct btrfs_super_block *s) |
882 | { | |
883 | return le64_to_cpu(s->last_device_id); | |
884 | } | |
885 | ||
886 | static inline void btrfs_set_super_last_device_id(struct btrfs_super_block *s, | |
887 | u64 val) | |
888 | { | |
889 | s->last_device_id = cpu_to_le64(val); | |
890 | } | |
891 | ||
892 | static inline u64 btrfs_super_device_id(struct btrfs_super_block *s) | |
893 | { | |
894 | return le64_to_cpu(s->device_id); | |
895 | } | |
896 | ||
897 | static inline void btrfs_set_super_device_id(struct btrfs_super_block *s, | |
898 | u64 val) | |
899 | { | |
900 | s->device_id = cpu_to_le64(val); | |
901 | } | |
902 | ||
0bd93ba0 CM |
903 | static inline u64 btrfs_super_device_block_start(struct btrfs_super_block *s) |
904 | { | |
905 | return le64_to_cpu(s->device_block_start); | |
906 | } | |
907 | ||
908 | static inline void btrfs_set_super_device_block_start(struct btrfs_super_block | |
909 | *s, u64 val) | |
910 | { | |
911 | s->device_block_start = cpu_to_le64(val); | |
912 | } | |
913 | ||
914 | static inline u64 btrfs_super_device_num_blocks(struct btrfs_super_block *s) | |
915 | { | |
916 | return le64_to_cpu(s->device_num_blocks); | |
917 | } | |
918 | ||
919 | static inline void btrfs_set_super_device_num_blocks(struct btrfs_super_block | |
920 | *s, u64 val) | |
921 | { | |
922 | s->device_num_blocks = cpu_to_le64(val); | |
923 | } | |
924 | ||
925 | static inline u64 btrfs_super_device_root(struct btrfs_super_block *s) | |
926 | { | |
927 | return le64_to_cpu(s->device_root); | |
928 | } | |
929 | ||
930 | static inline void btrfs_set_super_device_root(struct btrfs_super_block | |
931 | *s, u64 val) | |
932 | { | |
933 | s->device_root = cpu_to_le64(val); | |
934 | } | |
935 | ||
936 | ||
123abc88 | 937 | static inline u8 *btrfs_leaf_data(struct btrfs_leaf *l) |
3768f368 | 938 | { |
123abc88 | 939 | return (u8 *)l->items; |
3768f368 | 940 | } |
9f5fae2f | 941 | |
236454df CM |
942 | static inline int btrfs_file_extent_type(struct btrfs_file_extent_item *e) |
943 | { | |
944 | return e->type; | |
945 | } | |
946 | static inline void btrfs_set_file_extent_type(struct btrfs_file_extent_item *e, | |
947 | u8 val) | |
948 | { | |
949 | e->type = val; | |
950 | } | |
951 | ||
952 | static inline char *btrfs_file_extent_inline_start(struct | |
953 | btrfs_file_extent_item *e) | |
954 | { | |
955 | return (char *)(&e->disk_blocknr); | |
956 | } | |
957 | ||
958 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
959 | { | |
960 | return (unsigned long)(&((struct | |
961 | btrfs_file_extent_item *)NULL)->disk_blocknr) + datasize; | |
962 | } | |
963 | ||
964 | static inline u32 btrfs_file_extent_inline_len(struct btrfs_item *e) | |
965 | { | |
966 | struct btrfs_file_extent_item *fe = NULL; | |
967 | return btrfs_item_size(e) - (unsigned long)(&fe->disk_blocknr); | |
968 | } | |
969 | ||
9f5fae2f CM |
970 | static inline u64 btrfs_file_extent_disk_blocknr(struct btrfs_file_extent_item |
971 | *e) | |
972 | { | |
973 | return le64_to_cpu(e->disk_blocknr); | |
974 | } | |
975 | ||
976 | static inline void btrfs_set_file_extent_disk_blocknr(struct | |
977 | btrfs_file_extent_item | |
978 | *e, u64 val) | |
979 | { | |
980 | e->disk_blocknr = cpu_to_le64(val); | |
981 | } | |
982 | ||
71951f35 CM |
983 | static inline u64 btrfs_file_extent_generation(struct btrfs_file_extent_item *e) |
984 | { | |
985 | return le64_to_cpu(e->generation); | |
986 | } | |
987 | ||
988 | static inline void btrfs_set_file_extent_generation(struct | |
989 | btrfs_file_extent_item *e, | |
990 | u64 val) | |
991 | { | |
992 | e->generation = cpu_to_le64(val); | |
993 | } | |
994 | ||
9f5fae2f CM |
995 | static inline u64 btrfs_file_extent_disk_num_blocks(struct |
996 | btrfs_file_extent_item *e) | |
997 | { | |
998 | return le64_to_cpu(e->disk_num_blocks); | |
999 | } | |
1000 | ||
1001 | static inline void btrfs_set_file_extent_disk_num_blocks(struct | |
1002 | btrfs_file_extent_item | |
1003 | *e, u64 val) | |
1004 | { | |
1005 | e->disk_num_blocks = cpu_to_le64(val); | |
1006 | } | |
1007 | ||
1008 | static inline u64 btrfs_file_extent_offset(struct btrfs_file_extent_item *e) | |
1009 | { | |
1010 | return le64_to_cpu(e->offset); | |
1011 | } | |
1012 | ||
1013 | static inline void btrfs_set_file_extent_offset(struct btrfs_file_extent_item | |
1014 | *e, u64 val) | |
1015 | { | |
1016 | e->offset = cpu_to_le64(val); | |
1017 | } | |
1018 | ||
1019 | static inline u64 btrfs_file_extent_num_blocks(struct btrfs_file_extent_item | |
1020 | *e) | |
1021 | { | |
1022 | return le64_to_cpu(e->num_blocks); | |
1023 | } | |
1024 | ||
1025 | static inline void btrfs_set_file_extent_num_blocks(struct | |
1026 | btrfs_file_extent_item *e, | |
1027 | u64 val) | |
1028 | { | |
1029 | e->num_blocks = cpu_to_le64(val); | |
1030 | } | |
1031 | ||
0bd93ba0 CM |
1032 | static inline u16 btrfs_device_pathlen(struct btrfs_device_item *d) |
1033 | { | |
1034 | return le16_to_cpu(d->pathlen); | |
1035 | } | |
1036 | ||
1037 | static inline void btrfs_set_device_pathlen(struct btrfs_device_item *d, | |
1038 | u16 val) | |
1039 | { | |
1040 | d->pathlen = cpu_to_le16(val); | |
1041 | } | |
1042 | ||
b4100d64 CM |
1043 | static inline u64 btrfs_device_id(struct btrfs_device_item *d) |
1044 | { | |
1045 | return le64_to_cpu(d->device_id); | |
1046 | } | |
1047 | ||
1048 | static inline void btrfs_set_device_id(struct btrfs_device_item *d, | |
1049 | u64 val) | |
1050 | { | |
1051 | d->device_id = cpu_to_le64(val); | |
1052 | } | |
1053 | ||
e20d96d6 CM |
1054 | static inline struct btrfs_root *btrfs_sb(struct super_block *sb) |
1055 | { | |
1056 | return sb->s_fs_info; | |
1057 | } | |
1058 | ||
d6025579 CM |
1059 | static inline void btrfs_check_bounds(void *vptr, size_t len, |
1060 | void *vcontainer, size_t container_len) | |
1061 | { | |
1062 | char *ptr = vptr; | |
1063 | char *container = vcontainer; | |
1064 | WARN_ON(ptr < container); | |
1065 | WARN_ON(ptr + len > container + container_len); | |
1066 | } | |
1067 | ||
1068 | static inline void btrfs_memcpy(struct btrfs_root *root, | |
1069 | void *dst_block, | |
1070 | void *dst, const void *src, size_t nr) | |
1071 | { | |
1072 | btrfs_check_bounds(dst, nr, dst_block, root->fs_info->sb->s_blocksize); | |
1073 | memcpy(dst, src, nr); | |
1074 | } | |
1075 | ||
1076 | static inline void btrfs_memmove(struct btrfs_root *root, | |
1077 | void *dst_block, | |
1078 | void *dst, void *src, size_t nr) | |
1079 | { | |
1080 | btrfs_check_bounds(dst, nr, dst_block, root->fs_info->sb->s_blocksize); | |
1081 | memmove(dst, src, nr); | |
1082 | } | |
1083 | ||
1084 | static inline void btrfs_mark_buffer_dirty(struct buffer_head *bh) | |
1085 | { | |
1086 | WARN_ON(!atomic_read(&bh->b_count)); | |
1087 | mark_buffer_dirty(bh); | |
1088 | } | |
1089 | ||
4beb1b8b CM |
1090 | /* helper function to cast into the data area of the leaf. */ |
1091 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 CM |
1092 | ((type *)(btrfs_leaf_data(leaf) + \ |
1093 | btrfs_item_offset((leaf)->items + (slot)))) | |
4beb1b8b | 1094 | |
b18c6685 | 1095 | /* extent-tree.c */ |
31f3c99b CM |
1096 | struct btrfs_block_group_cache *btrfs_find_block_group(struct btrfs_root *root, |
1097 | struct btrfs_block_group_cache | |
be744175 | 1098 | *hint, u64 search_start, |
de428b63 | 1099 | int data, int owner); |
c5739bba CM |
1100 | int btrfs_inc_root_ref(struct btrfs_trans_handle *trans, |
1101 | struct btrfs_root *root); | |
e20d96d6 | 1102 | struct buffer_head *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
31f3c99b | 1103 | struct btrfs_root *root, u64 hint); |
4d775673 CM |
1104 | int btrfs_alloc_extent(struct btrfs_trans_handle *trans, |
1105 | struct btrfs_root *root, u64 owner, | |
c62a1920 | 1106 | u64 num_blocks, u64 search_start, |
be08c1b9 | 1107 | u64 search_end, struct btrfs_key *ins, int data); |
e089f05c | 1108 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
e20d96d6 | 1109 | struct buffer_head *buf); |
e089f05c CM |
1110 | int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root |
1111 | *root, u64 blocknr, u64 num_blocks, int pin); | |
dee26a9f CM |
1112 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, struct |
1113 | btrfs_root *root); | |
b18c6685 CM |
1114 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
1115 | struct btrfs_root *root, | |
1116 | u64 blocknr, u64 num_blocks); | |
9078a3e1 CM |
1117 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
1118 | struct btrfs_root *root); | |
1119 | int btrfs_free_block_groups(struct btrfs_fs_info *info); | |
1120 | int btrfs_read_block_groups(struct btrfs_root *root); | |
dee26a9f | 1121 | /* ctree.c */ |
6567e837 CM |
1122 | int btrfs_extend_item(struct btrfs_trans_handle *trans, struct btrfs_root |
1123 | *root, struct btrfs_path *path, u32 data_size); | |
b18c6685 CM |
1124 | int btrfs_truncate_item(struct btrfs_trans_handle *trans, |
1125 | struct btrfs_root *root, | |
1126 | struct btrfs_path *path, | |
1127 | u32 new_size); | |
e089f05c CM |
1128 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
1129 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
1130 | ins_len, int cow); | |
234b63a0 | 1131 | void btrfs_release_path(struct btrfs_root *root, struct btrfs_path *p); |
2c90e5d6 CM |
1132 | struct btrfs_path *btrfs_alloc_path(void); |
1133 | void btrfs_free_path(struct btrfs_path *p); | |
234b63a0 | 1134 | void btrfs_init_path(struct btrfs_path *p); |
e089f05c CM |
1135 | int btrfs_del_item(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1136 | struct btrfs_path *path); | |
1137 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root | |
1138 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
1139 | int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, struct btrfs_root | |
1140 | *root, struct btrfs_path *path, struct btrfs_key | |
1141 | *cpu_key, u32 data_size); | |
234b63a0 | 1142 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
123abc88 | 1143 | int btrfs_leaf_free_space(struct btrfs_root *root, struct btrfs_leaf *leaf); |
e089f05c | 1144 | int btrfs_drop_snapshot(struct btrfs_trans_handle *trans, struct btrfs_root |
e20d96d6 | 1145 | *root, struct buffer_head *snap); |
dee26a9f | 1146 | /* root-item.c */ |
e089f05c CM |
1147 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
1148 | struct btrfs_key *key); | |
1149 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1150 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1151 | *item); | |
1152 | int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1153 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1154 | *item); | |
1155 | int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct | |
1156 | btrfs_root_item *item, struct btrfs_key *key); | |
dee26a9f | 1157 | /* dir-item.c */ |
e089f05c | 1158 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
1159 | *root, const char *name, int name_len, u64 dir, |
1160 | struct btrfs_key *location, u8 type); | |
7e38180e CM |
1161 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
1162 | struct btrfs_root *root, | |
1163 | struct btrfs_path *path, u64 dir, | |
1164 | const char *name, int name_len, | |
1165 | int mod); | |
1166 | struct btrfs_dir_item * | |
1167 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
1168 | struct btrfs_root *root, | |
1169 | struct btrfs_path *path, u64 dir, | |
1170 | u64 objectid, const char *name, int name_len, | |
1171 | int mod); | |
1172 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, | |
1173 | struct btrfs_path *path, | |
7f5c1516 | 1174 | const char *name, int name_len); |
7e38180e CM |
1175 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
1176 | struct btrfs_root *root, | |
1177 | struct btrfs_path *path, | |
1178 | struct btrfs_dir_item *di); | |
dee26a9f | 1179 | /* inode-map.c */ |
9f5fae2f CM |
1180 | int btrfs_find_free_objectid(struct btrfs_trans_handle *trans, |
1181 | struct btrfs_root *fs_root, | |
1182 | u64 dirid, u64 *objectid); | |
5be6f7f1 CM |
1183 | int btrfs_find_highest_inode(struct btrfs_root *fs_root, u64 *objectid); |
1184 | ||
dee26a9f | 1185 | /* inode-item.c */ |
293ffd5f CM |
1186 | int btrfs_insert_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
1187 | *root, u64 objectid, struct btrfs_inode_item | |
1188 | *inode_item); | |
1189 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root | |
d6e4a428 CM |
1190 | *root, struct btrfs_path *path, |
1191 | struct btrfs_key *location, int mod); | |
dee26a9f CM |
1192 | |
1193 | /* file-item.c */ | |
b18c6685 | 1194 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
dee26a9f | 1195 | struct btrfs_root *root, |
b18c6685 | 1196 | u64 objectid, u64 pos, u64 offset, |
3a686375 | 1197 | u64 disk_num_blocks, |
b18c6685 | 1198 | u64 num_blocks); |
dee26a9f CM |
1199 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
1200 | struct btrfs_root *root, | |
1201 | struct btrfs_path *path, u64 objectid, | |
9773a788 | 1202 | u64 blocknr, int mod); |
f254e52c CM |
1203 | int btrfs_csum_file_block(struct btrfs_trans_handle *trans, |
1204 | struct btrfs_root *root, | |
1205 | u64 objectid, u64 offset, | |
1206 | char *data, size_t len); | |
1207 | int btrfs_csum_verify_file_block(struct btrfs_root *root, | |
1208 | u64 objectid, u64 offset, | |
1209 | char *data, size_t len); | |
b18c6685 CM |
1210 | struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans, |
1211 | struct btrfs_root *root, | |
1212 | struct btrfs_path *path, | |
1213 | u64 objectid, u64 offset, | |
1214 | int cow); | |
1de037a4 CM |
1215 | int btrfs_csum_truncate(struct btrfs_trans_handle *trans, |
1216 | struct btrfs_root *root, struct btrfs_path *path, | |
1217 | u64 isize); | |
d6e4a428 | 1218 | /* super.c */ |
eb60ceac | 1219 | #endif |