Commit | Line | Data |
---|---|---|
6cbd5570 CM |
1 | /* |
2 | * Copyright (C) 2007 Oracle. All rights reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public | |
6 | * License v2 as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
11 | * General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public | |
14 | * License along with this program; if not, write to the | |
15 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
16 | * Boston, MA 021110-1307, USA. | |
17 | */ | |
18 | ||
234b63a0 CM |
19 | #ifndef __BTRFS__ |
20 | #define __BTRFS__ | |
eb60ceac | 21 | |
810191ff CM |
22 | #include <linux/mm.h> |
23 | #include <linux/highmem.h> | |
e20d96d6 | 24 | #include <linux/fs.h> |
08607c1b | 25 | #include <linux/workqueue.h> |
58176a96 | 26 | #include <linux/completion.h> |
479965d6 | 27 | #include <asm/kmap_types.h> |
8ef97622 | 28 | #include "bit-radix.h" |
5f39d397 | 29 | #include "extent_map.h" |
e20d96d6 | 30 | |
e089f05c | 31 | struct btrfs_trans_handle; |
79154b1b | 32 | struct btrfs_transaction; |
35b7e476 CM |
33 | extern struct kmem_cache *btrfs_trans_handle_cachep; |
34 | extern struct kmem_cache *btrfs_transaction_cachep; | |
35 | extern struct kmem_cache *btrfs_bit_radix_cachep; | |
2c90e5d6 | 36 | extern struct kmem_cache *btrfs_path_cachep; |
e089f05c | 37 | |
5f39d397 | 38 | #define BTRFS_MAGIC "_B2RfS_M" |
eb60ceac | 39 | |
6407bf6d | 40 | #define BTRFS_ROOT_TREE_OBJECTID 1ULL |
0cf6c620 CM |
41 | #define BTRFS_EXTENT_TREE_OBJECTID 2ULL |
42 | #define BTRFS_FS_TREE_OBJECTID 3ULL | |
43 | #define BTRFS_ROOT_TREE_DIR_OBJECTID 4ULL | |
44 | #define BTRFS_FIRST_FREE_OBJECTID 5ULL | |
3768f368 | 45 | |
e20d96d6 CM |
46 | /* |
47 | * we can actually store much bigger names, but lets not confuse the rest | |
48 | * of linux | |
49 | */ | |
50 | #define BTRFS_NAME_LEN 255 | |
51 | ||
f254e52c CM |
52 | /* 32 bytes in various csum fields */ |
53 | #define BTRFS_CSUM_SIZE 32 | |
509659cd CM |
54 | /* four bytes for CRC32 */ |
55 | #define BTRFS_CRC32_SIZE 4 | |
e06afa83 | 56 | #define BTRFS_EMPTY_DIR_SIZE 6 |
f254e52c | 57 | |
fabb5681 CM |
58 | #define BTRFS_FT_UNKNOWN 0 |
59 | #define BTRFS_FT_REG_FILE 1 | |
60 | #define BTRFS_FT_DIR 2 | |
61 | #define BTRFS_FT_CHRDEV 3 | |
62 | #define BTRFS_FT_BLKDEV 4 | |
63 | #define BTRFS_FT_FIFO 5 | |
64 | #define BTRFS_FT_SOCK 6 | |
65 | #define BTRFS_FT_SYMLINK 7 | |
5103e947 JB |
66 | #define BTRFS_FT_XATTR 8 |
67 | #define BTRFS_FT_MAX 9 | |
fabb5681 | 68 | |
fec577fb CM |
69 | /* |
70 | * the key defines the order in the tree, and so it also defines (optimal) | |
71 | * block layout. objectid corresonds to the inode number. The flags | |
72 | * tells us things about the object, and is a kind of stream selector. | |
73 | * so for a given inode, keys with flags of 1 might refer to the inode | |
74 | * data, flags of 2 may point to file data in the btree and flags == 3 | |
75 | * may point to extents. | |
76 | * | |
77 | * offset is the starting byte offset for this key in the stream. | |
e2fa7227 CM |
78 | * |
79 | * btrfs_disk_key is in disk byte order. struct btrfs_key is always | |
80 | * in cpu native order. Otherwise they are identical and their sizes | |
81 | * should be the same (ie both packed) | |
fec577fb | 82 | */ |
e2fa7227 CM |
83 | struct btrfs_disk_key { |
84 | __le64 objectid; | |
5f39d397 | 85 | u8 type; |
70b2befd | 86 | __le64 offset; |
e2fa7227 CM |
87 | } __attribute__ ((__packed__)); |
88 | ||
89 | struct btrfs_key { | |
eb60ceac | 90 | u64 objectid; |
5f39d397 | 91 | u8 type; |
70b2befd | 92 | u64 offset; |
eb60ceac CM |
93 | } __attribute__ ((__packed__)); |
94 | ||
5f39d397 | 95 | #define BTRFS_FSID_SIZE 16 |
fec577fb CM |
96 | /* |
97 | * every tree block (leaf or node) starts with this header. | |
98 | */ | |
bb492bb0 | 99 | struct btrfs_header { |
f254e52c | 100 | u8 csum[BTRFS_CSUM_SIZE]; |
5f39d397 | 101 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 102 | __le64 bytenr; /* which block this node is supposed to live in */ |
7f5c1516 | 103 | __le64 generation; |
4d775673 | 104 | __le64 owner; |
5f39d397 | 105 | __le32 nritems; |
bb492bb0 | 106 | __le16 flags; |
9a6f11ed | 107 | u8 level; |
eb60ceac CM |
108 | } __attribute__ ((__packed__)); |
109 | ||
234b63a0 | 110 | #define BTRFS_MAX_LEVEL 8 |
5f39d397 | 111 | #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->nodesize - \ |
123abc88 | 112 | sizeof(struct btrfs_header)) / \ |
74493f7a | 113 | sizeof(struct btrfs_key_ptr)) |
123abc88 | 114 | #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header)) |
5f39d397 | 115 | #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->leafsize)) |
236454df CM |
116 | #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
117 | sizeof(struct btrfs_item) - \ | |
118 | sizeof(struct btrfs_file_extent_item)) | |
eb60ceac | 119 | |
fec577fb CM |
120 | /* |
121 | * the super block basically lists the main trees of the FS | |
122 | * it currently lacks any block count etc etc | |
123 | */ | |
234b63a0 | 124 | struct btrfs_super_block { |
f254e52c | 125 | u8 csum[BTRFS_CSUM_SIZE]; |
87cbda5c | 126 | /* the first 3 fields must match struct btrfs_header */ |
3768f368 | 127 | u8 fsid[16]; /* FS specific uuid */ |
db94535d | 128 | __le64 bytenr; /* this block number */ |
3768f368 | 129 | __le64 magic; |
3768f368 CM |
130 | __le64 generation; |
131 | __le64 root; | |
db94535d CM |
132 | __le64 total_bytes; |
133 | __le64 bytes_used; | |
2e635a27 | 134 | __le64 root_dir_objectid; |
5f39d397 CM |
135 | __le32 sectorsize; |
136 | __le32 nodesize; | |
137 | __le32 leafsize; | |
87ee04eb | 138 | __le32 stripesize; |
db94535d | 139 | u8 root_level; |
cfaa7295 CM |
140 | } __attribute__ ((__packed__)); |
141 | ||
fec577fb | 142 | /* |
62e2749e | 143 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
144 | * the item in the leaf (relative to the start of the data area) |
145 | */ | |
0783fcfc | 146 | struct btrfs_item { |
e2fa7227 | 147 | struct btrfs_disk_key key; |
123abc88 | 148 | __le32 offset; |
5f39d397 | 149 | __le32 size; |
eb60ceac CM |
150 | } __attribute__ ((__packed__)); |
151 | ||
fec577fb CM |
152 | /* |
153 | * leaves have an item area and a data area: | |
154 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
155 | * | |
156 | * The data is separate from the items to get the keys closer together | |
157 | * during searches. | |
158 | */ | |
234b63a0 | 159 | struct btrfs_leaf { |
bb492bb0 | 160 | struct btrfs_header header; |
123abc88 | 161 | struct btrfs_item items[]; |
eb60ceac CM |
162 | } __attribute__ ((__packed__)); |
163 | ||
fec577fb CM |
164 | /* |
165 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
166 | * other blocks | |
167 | */ | |
123abc88 CM |
168 | struct btrfs_key_ptr { |
169 | struct btrfs_disk_key key; | |
170 | __le64 blockptr; | |
74493f7a | 171 | __le64 generation; |
123abc88 CM |
172 | } __attribute__ ((__packed__)); |
173 | ||
234b63a0 | 174 | struct btrfs_node { |
bb492bb0 | 175 | struct btrfs_header header; |
123abc88 | 176 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
177 | } __attribute__ ((__packed__)); |
178 | ||
fec577fb | 179 | /* |
234b63a0 CM |
180 | * btrfs_paths remember the path taken from the root down to the leaf. |
181 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
182 | * to any other levels that are present. |
183 | * | |
184 | * The slots array records the index of the item or block pointer | |
185 | * used while walking the tree. | |
186 | */ | |
234b63a0 | 187 | struct btrfs_path { |
5f39d397 | 188 | struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 189 | int slots[BTRFS_MAX_LEVEL]; |
3c69faec | 190 | int reada; |
6702ed49 | 191 | int lowest_level; |
eb60ceac | 192 | }; |
5de08d7d | 193 | |
62e2749e CM |
194 | /* |
195 | * items in the extent btree are used to record the objectid of the | |
196 | * owner of the block and the number of references | |
197 | */ | |
198 | struct btrfs_extent_item { | |
199 | __le32 refs; | |
74493f7a CM |
200 | } __attribute__ ((__packed__)); |
201 | ||
202 | struct btrfs_extent_ref { | |
203 | __le64 root; | |
204 | __le64 generation; | |
205 | __le64 objectid; | |
206 | __le64 offset; | |
62e2749e CM |
207 | } __attribute__ ((__packed__)); |
208 | ||
1e1d2701 | 209 | struct btrfs_inode_timespec { |
f254e52c | 210 | __le64 sec; |
1e1d2701 CM |
211 | __le32 nsec; |
212 | } __attribute__ ((__packed__)); | |
213 | ||
214 | /* | |
215 | * there is no padding here on purpose. If you want to extent the inode, | |
216 | * make a new item type | |
217 | */ | |
218 | struct btrfs_inode_item { | |
219 | __le64 generation; | |
220 | __le64 size; | |
221 | __le64 nblocks; | |
31f3c99b | 222 | __le64 block_group; |
1e1d2701 CM |
223 | __le32 nlink; |
224 | __le32 uid; | |
225 | __le32 gid; | |
226 | __le32 mode; | |
227 | __le32 rdev; | |
228 | __le16 flags; | |
229 | __le16 compat_flags; | |
230 | struct btrfs_inode_timespec atime; | |
231 | struct btrfs_inode_timespec ctime; | |
232 | struct btrfs_inode_timespec mtime; | |
233 | struct btrfs_inode_timespec otime; | |
234 | } __attribute__ ((__packed__)); | |
235 | ||
62e2749e | 236 | struct btrfs_dir_item { |
d6e4a428 | 237 | struct btrfs_disk_key location; |
5103e947 | 238 | __le16 data_len; |
a8a2ee0c | 239 | __le16 name_len; |
62e2749e CM |
240 | u8 type; |
241 | } __attribute__ ((__packed__)); | |
242 | ||
243 | struct btrfs_root_item { | |
d6e4a428 CM |
244 | struct btrfs_inode_item inode; |
245 | __le64 root_dirid; | |
db94535d CM |
246 | __le64 bytenr; |
247 | __le64 byte_limit; | |
248 | __le64 bytes_used; | |
5eda7b5e | 249 | __le32 flags; |
62e2749e | 250 | __le32 refs; |
5eda7b5e CM |
251 | struct btrfs_disk_key drop_progress; |
252 | u8 drop_level; | |
db94535d | 253 | u8 level; |
9f5fae2f | 254 | } __attribute__ ((__packed__)); |
62e2749e | 255 | |
236454df CM |
256 | #define BTRFS_FILE_EXTENT_REG 0 |
257 | #define BTRFS_FILE_EXTENT_INLINE 1 | |
258 | ||
9f5fae2f | 259 | struct btrfs_file_extent_item { |
71951f35 | 260 | __le64 generation; |
236454df | 261 | u8 type; |
9f5fae2f CM |
262 | /* |
263 | * disk space consumed by the extent, checksum blocks are included | |
264 | * in these numbers | |
265 | */ | |
db94535d CM |
266 | __le64 disk_bytenr; |
267 | __le64 disk_num_bytes; | |
9f5fae2f | 268 | /* |
dee26a9f | 269 | * the logical offset in file blocks (no csums) |
9f5fae2f CM |
270 | * this extent record is for. This allows a file extent to point |
271 | * into the middle of an existing extent on disk, sharing it | |
272 | * between two snapshots (useful if some bytes in the middle of the | |
273 | * extent have changed | |
274 | */ | |
275 | __le64 offset; | |
276 | /* | |
277 | * the logical number of file blocks (no csums included) | |
278 | */ | |
db94535d | 279 | __le64 num_bytes; |
9f5fae2f CM |
280 | } __attribute__ ((__packed__)); |
281 | ||
f254e52c | 282 | struct btrfs_csum_item { |
509659cd | 283 | u8 csum; |
f254e52c CM |
284 | } __attribute__ ((__packed__)); |
285 | ||
9078a3e1 | 286 | /* tag for the radix tree of block groups in ram */ |
9078a3e1 | 287 | #define BTRFS_BLOCK_GROUP_SIZE (256 * 1024 * 1024) |
1e2677e0 CM |
288 | |
289 | ||
290 | #define BTRFS_BLOCK_GROUP_DATA 1 | |
f84a8b36 CM |
291 | #define BTRFS_BLOCK_GROUP_MIXED 2 |
292 | ||
9078a3e1 CM |
293 | struct btrfs_block_group_item { |
294 | __le64 used; | |
1e2677e0 | 295 | u8 flags; |
9078a3e1 CM |
296 | } __attribute__ ((__packed__)); |
297 | ||
298 | struct btrfs_block_group_cache { | |
299 | struct btrfs_key key; | |
300 | struct btrfs_block_group_item item; | |
be744175 | 301 | int data; |
e37c9e69 | 302 | int cached; |
324ae4df | 303 | u64 pinned; |
9078a3e1 | 304 | }; |
9f5fae2f | 305 | struct btrfs_fs_info { |
5f39d397 | 306 | u8 fsid[BTRFS_FSID_SIZE]; |
62e2749e CM |
307 | struct btrfs_root *extent_root; |
308 | struct btrfs_root *tree_root; | |
0f7d52f4 | 309 | struct radix_tree_root fs_roots_radix; |
1a5bc167 | 310 | |
f510cfec | 311 | struct extent_map_tree free_space_cache; |
96b5179d | 312 | struct extent_map_tree block_group_cache; |
1a5bc167 CM |
313 | struct extent_map_tree pinned_extents; |
314 | struct extent_map_tree pending_del; | |
315 | struct extent_map_tree extent_ins; | |
316 | ||
293ffd5f | 317 | u64 generation; |
15ee9bc7 | 318 | u64 last_trans_committed; |
79154b1b | 319 | struct btrfs_transaction *running_transaction; |
4b52dff6 | 320 | struct btrfs_super_block super_copy; |
5f39d397 | 321 | struct extent_buffer *sb_buffer; |
e20d96d6 | 322 | struct super_block *sb; |
d98237b3 | 323 | struct inode *btree_inode; |
19c00ddc | 324 | spinlock_t hash_lock; |
79154b1b | 325 | struct mutex trans_mutex; |
d561c025 | 326 | struct mutex fs_mutex; |
8fd17795 | 327 | struct list_head trans_list; |
19c00ddc | 328 | struct list_head hashers; |
facda1e7 | 329 | struct list_head dead_roots; |
08607c1b | 330 | struct delayed_work trans_work; |
58176a96 JB |
331 | struct kobject super_kobj; |
332 | struct completion kobj_unregister; | |
e66f709b | 333 | int do_barriers; |
facda1e7 | 334 | int closing; |
9f5fae2f | 335 | |
324ae4df Y |
336 | u64 total_pinned; |
337 | }; | |
9f5fae2f CM |
338 | /* |
339 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 340 | * and for the extent tree extent_root root. |
9f5fae2f CM |
341 | */ |
342 | struct btrfs_root { | |
5f39d397 CM |
343 | struct extent_buffer *node; |
344 | struct extent_buffer *commit_root; | |
62e2749e CM |
345 | struct btrfs_root_item root_item; |
346 | struct btrfs_key root_key; | |
9f5fae2f | 347 | struct btrfs_fs_info *fs_info; |
0f7d52f4 | 348 | struct inode *inode; |
58176a96 JB |
349 | struct kobject root_kobj; |
350 | struct completion kobj_unregister; | |
011410bd | 351 | struct rw_semaphore snap_sem; |
0f7d52f4 CM |
352 | u64 objectid; |
353 | u64 last_trans; | |
5f39d397 CM |
354 | |
355 | /* data allocations are done in sectorsize units */ | |
356 | u32 sectorsize; | |
357 | ||
358 | /* node allocations are done in nodesize units */ | |
359 | u32 nodesize; | |
360 | ||
361 | /* leaf allocations are done in leafsize units */ | |
362 | u32 leafsize; | |
363 | ||
87ee04eb CM |
364 | u32 stripesize; |
365 | ||
9f5fae2f | 366 | u32 type; |
1b05da2e CM |
367 | u64 highest_inode; |
368 | u64 last_inode_alloc; | |
9f3a7427 | 369 | int ref_cows; |
6702ed49 CM |
370 | struct btrfs_key defrag_progress; |
371 | int defrag_running; | |
372 | int defrag_level; | |
58176a96 | 373 | char *name; |
62e2749e CM |
374 | }; |
375 | ||
1e1d2701 CM |
376 | /* |
377 | * inode items have the data typically returned from stat and store other | |
378 | * info about object characteristics. There is one for every file and dir in | |
379 | * the FS | |
380 | */ | |
9078a3e1 | 381 | #define BTRFS_INODE_ITEM_KEY 1 |
5103e947 | 382 | #define BTRFS_XATTR_ITEM_KEY 2 |
9078a3e1 | 383 | /* reserve 2-15 close to the inode for later flexibility */ |
1e1d2701 CM |
384 | |
385 | /* | |
386 | * dir items are the name -> inode pointers in a directory. There is one | |
387 | * for every name in a directory. | |
388 | */ | |
9078a3e1 CM |
389 | #define BTRFS_DIR_ITEM_KEY 16 |
390 | #define BTRFS_DIR_INDEX_KEY 17 | |
1e1d2701 | 391 | /* |
9078a3e1 | 392 | * extent data is for file data |
1e1d2701 | 393 | */ |
9078a3e1 | 394 | #define BTRFS_EXTENT_DATA_KEY 18 |
f254e52c CM |
395 | /* |
396 | * csum items have the checksums for data in the extents | |
397 | */ | |
9078a3e1 CM |
398 | #define BTRFS_CSUM_ITEM_KEY 19 |
399 | ||
400 | /* reserve 20-31 for other file stuff */ | |
f254e52c | 401 | |
1e1d2701 CM |
402 | /* |
403 | * root items point to tree roots. There are typically in the root | |
404 | * tree used by the super block to find all the other trees | |
405 | */ | |
9078a3e1 | 406 | #define BTRFS_ROOT_ITEM_KEY 32 |
1e1d2701 CM |
407 | /* |
408 | * extent items are in the extent map tree. These record which blocks | |
409 | * are used, and how many references there are to each block | |
410 | */ | |
9078a3e1 | 411 | #define BTRFS_EXTENT_ITEM_KEY 33 |
74493f7a | 412 | #define BTRFS_EXTENT_REF_KEY 34 |
9078a3e1 CM |
413 | |
414 | /* | |
415 | * block groups give us hints into the extent allocation trees. Which | |
416 | * blocks are free etc etc | |
417 | */ | |
74493f7a | 418 | #define BTRFS_BLOCK_GROUP_ITEM_KEY 50 |
9f5fae2f | 419 | |
1e1d2701 CM |
420 | /* |
421 | * string items are for debugging. They just store a short string of | |
422 | * data in the FS | |
423 | */ | |
9078a3e1 CM |
424 | #define BTRFS_STRING_ITEM_KEY 253 |
425 | ||
5f39d397 CM |
426 | /* some macros to generate set/get funcs for the struct fields. This |
427 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple | |
428 | * one for u8: | |
429 | */ | |
430 | #define le8_to_cpu(v) (v) | |
431 | #define cpu_to_le8(v) (v) | |
432 | #define __le8 u8 | |
433 | ||
434 | #define read_eb_member(eb, ptr, type, member, result) ( \ | |
435 | read_extent_buffer(eb, (char *)(result), \ | |
436 | ((unsigned long)(ptr)) + \ | |
437 | offsetof(type, member), \ | |
438 | sizeof(((type *)0)->member))) | |
439 | ||
440 | #define write_eb_member(eb, ptr, type, member, result) ( \ | |
441 | write_extent_buffer(eb, (char *)(result), \ | |
442 | ((unsigned long)(ptr)) + \ | |
443 | offsetof(type, member), \ | |
444 | sizeof(((type *)0)->member))) | |
445 | ||
0f82731f | 446 | #ifndef BTRFS_SETGET_FUNCS |
5f39d397 | 447 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
0f82731f CM |
448 | u##bits btrfs_##name(struct extent_buffer *eb, type *s); \ |
449 | void btrfs_set_##name(struct extent_buffer *eb, type *s, u##bits val); | |
450 | #endif | |
5f39d397 CM |
451 | |
452 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ | |
453 | static inline u##bits btrfs_##name(struct extent_buffer *eb) \ | |
454 | { \ | |
810191ff | 455 | char *kaddr = kmap_atomic(eb->first_page, KM_USER0); \ |
6d36dcd4 | 456 | unsigned long offset = offsetof(type, member); \ |
810191ff CM |
457 | u##bits res; \ |
458 | __le##bits *tmp = (__le##bits *)(kaddr + offset); \ | |
459 | res = le##bits##_to_cpu(*tmp); \ | |
460 | kunmap_atomic(kaddr, KM_USER0); \ | |
461 | return res; \ | |
5f39d397 CM |
462 | } \ |
463 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ | |
464 | u##bits val) \ | |
465 | { \ | |
810191ff | 466 | char *kaddr = kmap_atomic(eb->first_page, KM_USER0); \ |
6d36dcd4 | 467 | unsigned long offset = offsetof(type, member); \ |
810191ff CM |
468 | __le##bits *tmp = (__le##bits *)(kaddr + offset); \ |
469 | *tmp = cpu_to_le##bits(val); \ | |
470 | kunmap_atomic(kaddr, KM_USER0); \ | |
5f39d397 | 471 | } |
9078a3e1 | 472 | |
5f39d397 CM |
473 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
474 | static inline u##bits btrfs_##name(type *s) \ | |
475 | { \ | |
476 | return le##bits##_to_cpu(s->member); \ | |
477 | } \ | |
478 | static inline void btrfs_set_##name(type *s, u##bits val) \ | |
479 | { \ | |
480 | s->member = cpu_to_le##bits(val); \ | |
1e1d2701 CM |
481 | } |
482 | ||
5f39d397 CM |
483 | /* struct btrfs_block_group_item */ |
484 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, | |
485 | used, 64); | |
486 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, | |
487 | used, 64); | |
1e1d2701 | 488 | |
5f39d397 CM |
489 | /* struct btrfs_inode_item */ |
490 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); | |
491 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); | |
492 | BTRFS_SETGET_FUNCS(inode_nblocks, struct btrfs_inode_item, nblocks, 64); | |
493 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); | |
494 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); | |
495 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); | |
496 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); | |
497 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); | |
498 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 32); | |
499 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 16); | |
500 | BTRFS_SETGET_FUNCS(inode_compat_flags, struct btrfs_inode_item, | |
501 | compat_flags, 16); | |
1e1d2701 | 502 | |
5f39d397 CM |
503 | static inline struct btrfs_inode_timespec * |
504 | btrfs_inode_atime(struct btrfs_inode_item *inode_item) | |
1e1d2701 | 505 | { |
5f39d397 CM |
506 | unsigned long ptr = (unsigned long)inode_item; |
507 | ptr += offsetof(struct btrfs_inode_item, atime); | |
508 | return (struct btrfs_inode_timespec *)ptr; | |
1e1d2701 CM |
509 | } |
510 | ||
5f39d397 CM |
511 | static inline struct btrfs_inode_timespec * |
512 | btrfs_inode_mtime(struct btrfs_inode_item *inode_item) | |
1e1d2701 | 513 | { |
5f39d397 CM |
514 | unsigned long ptr = (unsigned long)inode_item; |
515 | ptr += offsetof(struct btrfs_inode_item, mtime); | |
516 | return (struct btrfs_inode_timespec *)ptr; | |
1e1d2701 CM |
517 | } |
518 | ||
5f39d397 CM |
519 | static inline struct btrfs_inode_timespec * |
520 | btrfs_inode_ctime(struct btrfs_inode_item *inode_item) | |
1e1d2701 | 521 | { |
5f39d397 CM |
522 | unsigned long ptr = (unsigned long)inode_item; |
523 | ptr += offsetof(struct btrfs_inode_item, ctime); | |
524 | return (struct btrfs_inode_timespec *)ptr; | |
1e1d2701 CM |
525 | } |
526 | ||
5f39d397 CM |
527 | static inline struct btrfs_inode_timespec * |
528 | btrfs_inode_otime(struct btrfs_inode_item *inode_item) | |
1e1d2701 | 529 | { |
5f39d397 CM |
530 | unsigned long ptr = (unsigned long)inode_item; |
531 | ptr += offsetof(struct btrfs_inode_item, otime); | |
532 | return (struct btrfs_inode_timespec *)ptr; | |
1e1d2701 CM |
533 | } |
534 | ||
5f39d397 CM |
535 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_inode_timespec, sec, 64); |
536 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_inode_timespec, nsec, 32); | |
e20d96d6 | 537 | |
5f39d397 CM |
538 | /* struct btrfs_extent_item */ |
539 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 32); | |
74493f7a CM |
540 | |
541 | /* struct btrfs_extent_ref */ | |
542 | BTRFS_SETGET_FUNCS(ref_root, struct btrfs_extent_ref, root, 64); | |
543 | BTRFS_SETGET_FUNCS(ref_generation, struct btrfs_extent_ref, generation, 64); | |
544 | BTRFS_SETGET_FUNCS(ref_objectid, struct btrfs_extent_ref, objectid, 64); | |
545 | BTRFS_SETGET_FUNCS(ref_offset, struct btrfs_extent_ref, offset, 64); | |
546 | ||
7bb86316 CM |
547 | BTRFS_SETGET_STACK_FUNCS(stack_ref_root, struct btrfs_extent_ref, root, 64); |
548 | BTRFS_SETGET_STACK_FUNCS(stack_ref_generation, struct btrfs_extent_ref, | |
74493f7a | 549 | generation, 64); |
7bb86316 CM |
550 | BTRFS_SETGET_STACK_FUNCS(stack_ref_objectid, struct btrfs_extent_ref, |
551 | objectid, 64); | |
552 | BTRFS_SETGET_STACK_FUNCS(stack_ref_offset, struct btrfs_extent_ref, offset, 64); | |
e20d96d6 | 553 | |
5f39d397 CM |
554 | BTRFS_SETGET_STACK_FUNCS(stack_extent_refs, struct btrfs_extent_item, |
555 | refs, 32); | |
e20d96d6 | 556 | |
5f39d397 CM |
557 | /* struct btrfs_node */ |
558 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
74493f7a | 559 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
e20d96d6 | 560 | |
5f39d397 | 561 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
cf27e1ee | 562 | { |
5f39d397 CM |
563 | unsigned long ptr; |
564 | ptr = offsetof(struct btrfs_node, ptrs) + | |
565 | sizeof(struct btrfs_key_ptr) * nr; | |
566 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); | |
cf27e1ee CM |
567 | } |
568 | ||
5f39d397 CM |
569 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, |
570 | int nr, u64 val) | |
cf27e1ee | 571 | { |
5f39d397 CM |
572 | unsigned long ptr; |
573 | ptr = offsetof(struct btrfs_node, ptrs) + | |
574 | sizeof(struct btrfs_key_ptr) * nr; | |
575 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); | |
cf27e1ee CM |
576 | } |
577 | ||
74493f7a CM |
578 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) |
579 | { | |
580 | unsigned long ptr; | |
581 | ptr = offsetof(struct btrfs_node, ptrs) + | |
582 | sizeof(struct btrfs_key_ptr) * nr; | |
583 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); | |
584 | } | |
585 | ||
586 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, | |
587 | int nr, u64 val) | |
588 | { | |
589 | unsigned long ptr; | |
590 | ptr = offsetof(struct btrfs_node, ptrs) + | |
591 | sizeof(struct btrfs_key_ptr) * nr; | |
592 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); | |
593 | } | |
594 | ||
810191ff | 595 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
4d775673 | 596 | { |
5f39d397 CM |
597 | return offsetof(struct btrfs_node, ptrs) + |
598 | sizeof(struct btrfs_key_ptr) * nr; | |
4d775673 CM |
599 | } |
600 | ||
e644d021 CM |
601 | void btrfs_node_key(struct extent_buffer *eb, |
602 | struct btrfs_disk_key *disk_key, int nr); | |
603 | ||
5f39d397 CM |
604 | static inline void btrfs_set_node_key(struct extent_buffer *eb, |
605 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f8a0c | 606 | { |
5f39d397 CM |
607 | unsigned long ptr; |
608 | ptr = btrfs_node_key_ptr_offset(nr); | |
609 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, | |
610 | struct btrfs_key_ptr, key, disk_key); | |
1d4f8a0c CM |
611 | } |
612 | ||
5f39d397 CM |
613 | /* struct btrfs_item */ |
614 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); | |
615 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); | |
4d775673 | 616 | |
5f39d397 | 617 | static inline unsigned long btrfs_item_nr_offset(int nr) |
1d4f8a0c | 618 | { |
5f39d397 CM |
619 | return offsetof(struct btrfs_leaf, items) + |
620 | sizeof(struct btrfs_item) * nr; | |
1d4f8a0c CM |
621 | } |
622 | ||
5f39d397 CM |
623 | static inline struct btrfs_item *btrfs_item_nr(struct extent_buffer *eb, |
624 | int nr) | |
0783fcfc | 625 | { |
5f39d397 | 626 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
0783fcfc CM |
627 | } |
628 | ||
5f39d397 CM |
629 | static inline u32 btrfs_item_end(struct extent_buffer *eb, |
630 | struct btrfs_item *item) | |
0783fcfc | 631 | { |
5f39d397 | 632 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
0783fcfc CM |
633 | } |
634 | ||
5f39d397 | 635 | static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 636 | { |
5f39d397 | 637 | return btrfs_item_end(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
638 | } |
639 | ||
5f39d397 | 640 | static inline u32 btrfs_item_offset_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 641 | { |
5f39d397 | 642 | return btrfs_item_offset(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
643 | } |
644 | ||
5f39d397 | 645 | static inline u32 btrfs_item_size_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 646 | { |
5f39d397 | 647 | return btrfs_item_size(eb, btrfs_item_nr(eb, nr)); |
0783fcfc CM |
648 | } |
649 | ||
5f39d397 CM |
650 | static inline void btrfs_item_key(struct extent_buffer *eb, |
651 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 652 | { |
5f39d397 CM |
653 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
654 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
655 | } |
656 | ||
5f39d397 CM |
657 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
658 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 659 | { |
5f39d397 CM |
660 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
661 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
1d4f6404 CM |
662 | } |
663 | ||
5f39d397 | 664 | /* struct btrfs_dir_item */ |
5103e947 | 665 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
5f39d397 CM |
666 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
667 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); | |
1d4f6404 | 668 | |
5f39d397 CM |
669 | static inline void btrfs_dir_item_key(struct extent_buffer *eb, |
670 | struct btrfs_dir_item *item, | |
671 | struct btrfs_disk_key *key) | |
1d4f6404 | 672 | { |
5f39d397 | 673 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
1d4f6404 CM |
674 | } |
675 | ||
5f39d397 CM |
676 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
677 | struct btrfs_dir_item *item, | |
678 | struct btrfs_disk_key *key) | |
a8a2ee0c | 679 | { |
5f39d397 | 680 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
a8a2ee0c CM |
681 | } |
682 | ||
5f39d397 CM |
683 | /* struct btrfs_disk_key */ |
684 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, | |
685 | objectid, 64); | |
686 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); | |
687 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); | |
1d4f6404 | 688 | |
e2fa7227 CM |
689 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
690 | struct btrfs_disk_key *disk) | |
691 | { | |
692 | cpu->offset = le64_to_cpu(disk->offset); | |
5f39d397 | 693 | cpu->type = disk->type; |
e2fa7227 CM |
694 | cpu->objectid = le64_to_cpu(disk->objectid); |
695 | } | |
696 | ||
697 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
698 | struct btrfs_key *cpu) | |
699 | { | |
700 | disk->offset = cpu_to_le64(cpu->offset); | |
5f39d397 | 701 | disk->type = cpu->type; |
e2fa7227 CM |
702 | disk->objectid = cpu_to_le64(cpu->objectid); |
703 | } | |
704 | ||
5f39d397 CM |
705 | static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb, |
706 | struct btrfs_key *key, int nr) | |
7f5c1516 | 707 | { |
5f39d397 CM |
708 | struct btrfs_disk_key disk_key; |
709 | btrfs_node_key(eb, &disk_key, nr); | |
710 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
711 | } |
712 | ||
5f39d397 CM |
713 | static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb, |
714 | struct btrfs_key *key, int nr) | |
7f5c1516 | 715 | { |
5f39d397 CM |
716 | struct btrfs_disk_key disk_key; |
717 | btrfs_item_key(eb, &disk_key, nr); | |
718 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
719 | } |
720 | ||
5f39d397 CM |
721 | static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb, |
722 | struct btrfs_dir_item *item, | |
723 | struct btrfs_key *key) | |
4d775673 | 724 | { |
5f39d397 CM |
725 | struct btrfs_disk_key disk_key; |
726 | btrfs_dir_item_key(eb, item, &disk_key); | |
727 | btrfs_disk_key_to_cpu(key, &disk_key); | |
4d775673 CM |
728 | } |
729 | ||
58176a96 | 730 | |
5f39d397 | 731 | static inline u8 btrfs_key_type(struct btrfs_key *key) |
3768f368 | 732 | { |
5f39d397 | 733 | return key->type; |
3768f368 CM |
734 | } |
735 | ||
5f39d397 | 736 | static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val) |
3768f368 | 737 | { |
5f39d397 | 738 | key->type = val; |
3768f368 CM |
739 | } |
740 | ||
5f39d397 | 741 | /* struct btrfs_header */ |
db94535d | 742 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
5f39d397 CM |
743 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
744 | generation, 64); | |
745 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); | |
746 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); | |
747 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 16); | |
748 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); | |
0f7d52f4 | 749 | |
5f39d397 | 750 | static inline u8 *btrfs_header_fsid(struct extent_buffer *eb) |
0f7d52f4 | 751 | { |
5f39d397 CM |
752 | unsigned long ptr = offsetof(struct btrfs_header, fsid); |
753 | return (u8 *)ptr; | |
0f7d52f4 CM |
754 | } |
755 | ||
5f39d397 | 756 | static inline u8 *btrfs_super_fsid(struct extent_buffer *eb) |
3768f368 | 757 | { |
5f39d397 CM |
758 | unsigned long ptr = offsetof(struct btrfs_super_block, fsid); |
759 | return (u8 *)ptr; | |
3768f368 CM |
760 | } |
761 | ||
5f39d397 | 762 | static inline u8 *btrfs_header_csum(struct extent_buffer *eb) |
3768f368 | 763 | { |
5f39d397 CM |
764 | unsigned long ptr = offsetof(struct btrfs_header, csum); |
765 | return (u8 *)ptr; | |
3768f368 CM |
766 | } |
767 | ||
5f39d397 | 768 | static inline struct btrfs_node *btrfs_buffer_node(struct extent_buffer *eb) |
3768f368 | 769 | { |
5f39d397 | 770 | return NULL; |
3768f368 CM |
771 | } |
772 | ||
5f39d397 | 773 | static inline struct btrfs_leaf *btrfs_buffer_leaf(struct extent_buffer *eb) |
3768f368 | 774 | { |
5f39d397 | 775 | return NULL; |
3768f368 CM |
776 | } |
777 | ||
5f39d397 | 778 | static inline struct btrfs_header *btrfs_buffer_header(struct extent_buffer *eb) |
3768f368 | 779 | { |
5f39d397 | 780 | return NULL; |
3768f368 CM |
781 | } |
782 | ||
5f39d397 | 783 | static inline int btrfs_is_leaf(struct extent_buffer *eb) |
3768f368 | 784 | { |
5f39d397 | 785 | return (btrfs_header_level(eb) == 0); |
3768f368 CM |
786 | } |
787 | ||
5f39d397 CM |
788 | /* struct btrfs_root_item */ |
789 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); | |
db94535d CM |
790 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
791 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); | |
3768f368 | 792 | |
db94535d CM |
793 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
794 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); | |
5f39d397 CM |
795 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
796 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); | |
797 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 32); | |
db94535d CM |
798 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
799 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); | |
123abc88 | 800 | |
5f39d397 | 801 | /* struct btrfs_super_block */ |
db94535d | 802 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
5f39d397 CM |
803 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
804 | generation, 64); | |
805 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); | |
db94535d CM |
806 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
807 | root_level, 8); | |
808 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, | |
809 | total_bytes, 64); | |
810 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, | |
811 | bytes_used, 64); | |
5f39d397 CM |
812 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
813 | sectorsize, 32); | |
814 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, | |
815 | nodesize, 32); | |
816 | BTRFS_SETGET_STACK_FUNCS(super_leafsize, struct btrfs_super_block, | |
817 | leafsize, 32); | |
87ee04eb CM |
818 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
819 | stripesize, 32); | |
5f39d397 CM |
820 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
821 | root_dir_objectid, 64); | |
2e635a27 | 822 | |
5f39d397 | 823 | static inline unsigned long btrfs_leaf_data(struct extent_buffer *l) |
2e635a27 | 824 | { |
5f39d397 | 825 | return offsetof(struct btrfs_leaf, items); |
2e635a27 CM |
826 | } |
827 | ||
5f39d397 CM |
828 | /* struct btrfs_file_extent_item */ |
829 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); | |
9f5fae2f | 830 | |
5f39d397 | 831 | static inline unsigned long btrfs_file_extent_inline_start(struct |
236454df CM |
832 | btrfs_file_extent_item *e) |
833 | { | |
5f39d397 | 834 | unsigned long offset = (unsigned long)e; |
db94535d | 835 | offset += offsetof(struct btrfs_file_extent_item, disk_bytenr); |
5f39d397 | 836 | return offset; |
236454df CM |
837 | } |
838 | ||
839 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
840 | { | |
db94535d | 841 | return offsetof(struct btrfs_file_extent_item, disk_bytenr) + datasize; |
9f5fae2f CM |
842 | } |
843 | ||
5f39d397 CM |
844 | static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb, |
845 | struct btrfs_item *e) | |
9f5fae2f | 846 | { |
5f39d397 | 847 | unsigned long offset; |
db94535d | 848 | offset = offsetof(struct btrfs_file_extent_item, disk_bytenr); |
5f39d397 | 849 | return btrfs_item_size(eb, e) - offset; |
9f5fae2f CM |
850 | } |
851 | ||
db94535d CM |
852 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
853 | disk_bytenr, 64); | |
5f39d397 CM |
854 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
855 | generation, 64); | |
db94535d CM |
856 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
857 | disk_num_bytes, 64); | |
5f39d397 CM |
858 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
859 | offset, 64); | |
db94535d CM |
860 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
861 | num_bytes, 64); | |
9f5fae2f | 862 | |
e20d96d6 CM |
863 | static inline struct btrfs_root *btrfs_sb(struct super_block *sb) |
864 | { | |
865 | return sb->s_fs_info; | |
866 | } | |
867 | ||
58176a96 JB |
868 | static inline int btrfs_set_root_name(struct btrfs_root *root, |
869 | const char *name, int len) | |
870 | { | |
871 | /* if we already have a name just free it */ | |
872 | if (root->name) | |
873 | kfree(root->name); | |
874 | ||
875 | root->name = kmalloc(len+1, GFP_KERNEL); | |
876 | if (!root->name) | |
877 | return -ENOMEM; | |
878 | ||
879 | memcpy(root->name, name, len); | |
880 | root->name[len] ='\0'; | |
881 | ||
882 | return 0; | |
883 | } | |
884 | ||
db94535d CM |
885 | static inline u32 btrfs_level_size(struct btrfs_root *root, int level) { |
886 | if (level == 0) | |
887 | return root->leafsize; | |
888 | return root->nodesize; | |
889 | } | |
890 | ||
4beb1b8b CM |
891 | /* helper function to cast into the data area of the leaf. */ |
892 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 | 893 | ((type *)(btrfs_leaf_data(leaf) + \ |
5f39d397 CM |
894 | btrfs_item_offset_nr(leaf, slot))) |
895 | ||
896 | #define btrfs_item_ptr_offset(leaf, slot) \ | |
897 | ((unsigned long)(btrfs_leaf_data(leaf) + \ | |
898 | btrfs_item_offset_nr(leaf, slot))) | |
4beb1b8b | 899 | |
95e05289 CM |
900 | /* mount option defines and helpers */ |
901 | #define BTRFS_MOUNT_SUBVOL 0x000001 | |
902 | #define btrfs_clear_opt(o, opt) o &= ~BTRFS_MOUNT_##opt | |
903 | #define btrfs_set_opt(o, opt) o |= BTRFS_MOUNT_##opt | |
904 | #define btrfs_test_opt(sb, opt) (BTRFS_SB(sb)->s_mount_opt & \ | |
905 | BTRFS_MOUNT_##opt) | |
b18c6685 | 906 | /* extent-tree.c */ |
e9d0b13b CM |
907 | int btrfs_extent_post_op(struct btrfs_trans_handle *trans, |
908 | struct btrfs_root *root); | |
1a5bc167 | 909 | int btrfs_copy_pinned(struct btrfs_root *root, struct extent_map_tree *copy); |
5276aeda CM |
910 | struct btrfs_block_group_cache *btrfs_lookup_block_group(struct |
911 | btrfs_fs_info *info, | |
db94535d | 912 | u64 bytenr); |
31f3c99b CM |
913 | struct btrfs_block_group_cache *btrfs_find_block_group(struct btrfs_root *root, |
914 | struct btrfs_block_group_cache | |
be744175 | 915 | *hint, u64 search_start, |
de428b63 | 916 | int data, int owner); |
c5739bba | 917 | int btrfs_inc_root_ref(struct btrfs_trans_handle *trans, |
7bb86316 | 918 | struct btrfs_root *root, u64 owner_objectid); |
5f39d397 | 919 | struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
db94535d | 920 | struct btrfs_root *root, u32 size, |
7bb86316 | 921 | u64 root_objectid, |
db94535d | 922 | u64 hint, u64 empty_size); |
7bb86316 CM |
923 | struct extent_buffer *__btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
924 | struct btrfs_root *root, | |
925 | u32 blocksize, | |
926 | u64 root_objectid, | |
927 | u64 ref_generation, | |
928 | u64 first_objectid, | |
929 | int level, | |
930 | u64 hint, | |
931 | u64 empty_size); | |
932 | int btrfs_insert_extent_backref(struct btrfs_trans_handle *trans, | |
933 | struct btrfs_root *root, | |
934 | struct btrfs_path *path, u64 bytenr, | |
935 | u64 root_objectid, u64 ref_generation, | |
936 | u64 owner, u64 owner_offset); | |
4d775673 | 937 | int btrfs_alloc_extent(struct btrfs_trans_handle *trans, |
7bb86316 CM |
938 | struct btrfs_root *root, |
939 | u64 num_bytes, u64 root_objectid, u64 ref_generation, | |
940 | u64 owner, u64 owner_offset, | |
941 | u64 empty_size, u64 hint_byte, | |
be08c1b9 | 942 | u64 search_end, struct btrfs_key *ins, int data); |
e089f05c | 943 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
5f39d397 | 944 | struct extent_buffer *buf); |
e089f05c | 945 | int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root |
7bb86316 CM |
946 | *root, u64 bytenr, u64 num_bytes, |
947 | u64 root_objectid, u64 ref_generation, | |
948 | u64 owner_objectid, u64 owner_offset, int pin); | |
ccd467d6 CM |
949 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, |
950 | struct btrfs_root *root, | |
1a5bc167 | 951 | struct extent_map_tree *unpin); |
b18c6685 CM |
952 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
953 | struct btrfs_root *root, | |
7bb86316 CM |
954 | u64 bytenr, u64 num_bytes, |
955 | u64 root_objectid, u64 ref_generation, | |
956 | u64 owner, u64 owner_offset); | |
9078a3e1 CM |
957 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
958 | struct btrfs_root *root); | |
959 | int btrfs_free_block_groups(struct btrfs_fs_info *info); | |
960 | int btrfs_read_block_groups(struct btrfs_root *root); | |
dee26a9f | 961 | /* ctree.c */ |
5f39d397 CM |
962 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
963 | struct btrfs_root *root, struct extent_buffer *buf, | |
964 | struct extent_buffer *parent, int parent_slot, | |
965 | struct extent_buffer **cow_ret); | |
6567e837 CM |
966 | int btrfs_extend_item(struct btrfs_trans_handle *trans, struct btrfs_root |
967 | *root, struct btrfs_path *path, u32 data_size); | |
b18c6685 CM |
968 | int btrfs_truncate_item(struct btrfs_trans_handle *trans, |
969 | struct btrfs_root *root, | |
970 | struct btrfs_path *path, | |
179e29e4 | 971 | u32 new_size, int from_end); |
e089f05c CM |
972 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
973 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
974 | ins_len, int cow); | |
6702ed49 | 975 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
5f39d397 | 976 | struct btrfs_root *root, struct extent_buffer *parent, |
a6b6e75e CM |
977 | int start_slot, int cache_only, u64 *last_ret, |
978 | struct btrfs_key *progress); | |
234b63a0 | 979 | void btrfs_release_path(struct btrfs_root *root, struct btrfs_path *p); |
2c90e5d6 CM |
980 | struct btrfs_path *btrfs_alloc_path(void); |
981 | void btrfs_free_path(struct btrfs_path *p); | |
234b63a0 | 982 | void btrfs_init_path(struct btrfs_path *p); |
e089f05c CM |
983 | int btrfs_del_item(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
984 | struct btrfs_path *path); | |
985 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root | |
986 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
987 | int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, struct btrfs_root | |
988 | *root, struct btrfs_path *path, struct btrfs_key | |
989 | *cpu_key, u32 data_size); | |
234b63a0 | 990 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
7bb86316 | 991 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
5f39d397 | 992 | int btrfs_leaf_free_space(struct btrfs_root *root, struct extent_buffer *leaf); |
e089f05c | 993 | int btrfs_drop_snapshot(struct btrfs_trans_handle *trans, struct btrfs_root |
9f3a7427 | 994 | *root); |
dee26a9f | 995 | /* root-item.c */ |
e089f05c CM |
996 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
997 | struct btrfs_key *key); | |
998 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
999 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1000 | *item); | |
1001 | int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
1002 | *root, struct btrfs_key *key, struct btrfs_root_item | |
1003 | *item); | |
1004 | int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct | |
1005 | btrfs_root_item *item, struct btrfs_key *key); | |
5ce14bbc CM |
1006 | int btrfs_find_dead_roots(struct btrfs_root *root, u64 objectid, |
1007 | struct btrfs_root *latest_root); | |
dee26a9f | 1008 | /* dir-item.c */ |
e089f05c | 1009 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
1010 | *root, const char *name, int name_len, u64 dir, |
1011 | struct btrfs_key *location, u8 type); | |
7e38180e CM |
1012 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
1013 | struct btrfs_root *root, | |
1014 | struct btrfs_path *path, u64 dir, | |
1015 | const char *name, int name_len, | |
1016 | int mod); | |
1017 | struct btrfs_dir_item * | |
1018 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
1019 | struct btrfs_root *root, | |
1020 | struct btrfs_path *path, u64 dir, | |
1021 | u64 objectid, const char *name, int name_len, | |
1022 | int mod); | |
1023 | struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, | |
1024 | struct btrfs_path *path, | |
7f5c1516 | 1025 | const char *name, int name_len); |
7e38180e CM |
1026 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
1027 | struct btrfs_root *root, | |
1028 | struct btrfs_path *path, | |
1029 | struct btrfs_dir_item *di); | |
5103e947 JB |
1030 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
1031 | struct btrfs_root *root, const char *name, | |
1032 | u16 name_len, const void *data, u16 data_len, | |
1033 | u64 dir); | |
1034 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, | |
1035 | struct btrfs_root *root, | |
1036 | struct btrfs_path *path, u64 dir, | |
1037 | const char *name, u16 name_len, | |
1038 | int mod); | |
dee26a9f | 1039 | /* inode-map.c */ |
9f5fae2f CM |
1040 | int btrfs_find_free_objectid(struct btrfs_trans_handle *trans, |
1041 | struct btrfs_root *fs_root, | |
1042 | u64 dirid, u64 *objectid); | |
5be6f7f1 CM |
1043 | int btrfs_find_highest_inode(struct btrfs_root *fs_root, u64 *objectid); |
1044 | ||
dee26a9f | 1045 | /* inode-item.c */ |
5f39d397 CM |
1046 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
1047 | struct btrfs_root *root, | |
1048 | struct btrfs_path *path, u64 objectid); | |
293ffd5f | 1049 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
1050 | *root, struct btrfs_path *path, |
1051 | struct btrfs_key *location, int mod); | |
dee26a9f CM |
1052 | |
1053 | /* file-item.c */ | |
b18c6685 | 1054 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
dee26a9f | 1055 | struct btrfs_root *root, |
b18c6685 | 1056 | u64 objectid, u64 pos, u64 offset, |
db94535d CM |
1057 | u64 disk_num_bytes, |
1058 | u64 num_bytes); | |
dee26a9f CM |
1059 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
1060 | struct btrfs_root *root, | |
1061 | struct btrfs_path *path, u64 objectid, | |
db94535d | 1062 | u64 bytenr, int mod); |
f254e52c CM |
1063 | int btrfs_csum_file_block(struct btrfs_trans_handle *trans, |
1064 | struct btrfs_root *root, | |
f578d4bd | 1065 | struct inode *inode, |
f254e52c CM |
1066 | u64 objectid, u64 offset, |
1067 | char *data, size_t len); | |
b18c6685 CM |
1068 | struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans, |
1069 | struct btrfs_root *root, | |
1070 | struct btrfs_path *path, | |
1071 | u64 objectid, u64 offset, | |
1072 | int cow); | |
1de037a4 CM |
1073 | int btrfs_csum_truncate(struct btrfs_trans_handle *trans, |
1074 | struct btrfs_root *root, struct btrfs_path *path, | |
1075 | u64 isize); | |
39279cc3 | 1076 | /* inode.c */ |
9ebefb18 CM |
1077 | int btrfs_page_mkwrite(struct vm_area_struct *vma, struct page *page); |
1078 | int btrfs_readpage(struct file *file, struct page *page); | |
39279cc3 CM |
1079 | void btrfs_delete_inode(struct inode *inode); |
1080 | void btrfs_read_locked_inode(struct inode *inode); | |
1081 | int btrfs_write_inode(struct inode *inode, int wait); | |
1082 | void btrfs_dirty_inode(struct inode *inode); | |
1083 | struct inode *btrfs_alloc_inode(struct super_block *sb); | |
1084 | void btrfs_destroy_inode(struct inode *inode); | |
1085 | int btrfs_init_cachep(void); | |
1086 | void btrfs_destroy_cachep(void); | |
34287aa3 | 1087 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); |
39279cc3 CM |
1088 | struct inode *btrfs_iget_locked(struct super_block *s, u64 objectid, |
1089 | struct btrfs_root *root); | |
1090 | int btrfs_commit_write(struct file *file, struct page *page, | |
1091 | unsigned from, unsigned to); | |
a52d9a80 CM |
1092 | struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page, |
1093 | size_t page_offset, u64 start, u64 end, | |
1094 | int create); | |
1095 | int btrfs_update_inode(struct btrfs_trans_handle *trans, | |
1096 | struct btrfs_root *root, | |
1097 | struct inode *inode); | |
39279cc3 | 1098 | /* file.c */ |
a52d9a80 | 1099 | int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end); |
39279cc3 CM |
1100 | extern struct file_operations btrfs_file_operations; |
1101 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, | |
1102 | struct btrfs_root *root, struct inode *inode, | |
00f5c795 | 1103 | u64 start, u64 end, u64 inline_limit, u64 *hint_block); |
6702ed49 CM |
1104 | /* tree-defrag.c */ |
1105 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, | |
1106 | struct btrfs_root *root, int cache_only); | |
58176a96 JB |
1107 | |
1108 | /* sysfs.c */ | |
1109 | int btrfs_init_sysfs(void); | |
1110 | void btrfs_exit_sysfs(void); | |
1111 | int btrfs_sysfs_add_super(struct btrfs_fs_info *fs); | |
1112 | int btrfs_sysfs_add_root(struct btrfs_root *root); | |
1113 | void btrfs_sysfs_del_root(struct btrfs_root *root); | |
1114 | void btrfs_sysfs_del_super(struct btrfs_fs_info *root); | |
1115 | ||
5103e947 JB |
1116 | /* xattr.c */ |
1117 | ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size); | |
1118 | int btrfs_delete_xattrs(struct btrfs_trans_handle *trans, | |
1119 | struct btrfs_root *root, struct inode *inode); | |
eb60ceac | 1120 | #endif |