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83d290c5 | 1 | /* SPDX-License-Identifier: GPL-2.0+ */ |
d4a704af MB |
2 | /* |
3 | * From linux/fs/btrfs/ctree.h | |
4 | * Copyright (C) 2007,2008 Oracle. All rights reserved. | |
5 | * | |
61143f74 | 6 | * Modified in 2017 by Marek Behún, CZ.NIC, [email protected] |
d4a704af MB |
7 | */ |
8 | ||
9 | #ifndef __BTRFS_CTREE_H__ | |
10 | #define __BTRFS_CTREE_H__ | |
11 | ||
12 | #include <common.h> | |
13 | #include <compiler.h> | |
9a9be5ec | 14 | #include <linux/rbtree.h> |
b1f0067a | 15 | #include <linux/bug.h> |
c4bbbed3 | 16 | #include <asm/unaligned.h> |
be359425 | 17 | #include <u-boot/crc.h> |
3b4b40c0 | 18 | #include "kernel-shared/btrfs_tree.h" |
be359425 | 19 | #include "crypto/hash.h" |
4aebb994 | 20 | #include "compat.h" |
9a9be5ec | 21 | #include "extent-io.h" |
d4a704af MB |
22 | |
23 | #define BTRFS_MAX_MIRRORS 3 | |
24 | ||
d4a704af MB |
25 | /* |
26 | * the max metadata block size. This limit is somewhat artificial, | |
27 | * but the memmove costs go through the roof for larger blocks. | |
28 | */ | |
29 | #define BTRFS_MAX_METADATA_BLOCKSIZE 65536 | |
30 | ||
d4a704af MB |
31 | /* |
32 | * Theoretical limit is larger, but we keep this down to a sane | |
33 | * value. That should limit greatly the possibility of collisions on | |
34 | * inode ref items. | |
35 | */ | |
36 | #define BTRFS_LINK_MAX 65535U | |
37 | ||
d4a704af MB |
38 | /* four bytes for CRC32 */ |
39 | #define BTRFS_EMPTY_DIR_SIZE 0 | |
40 | ||
be359425 QW |
41 | struct btrfs_mapping_tree { |
42 | struct cache_tree cache_tree; | |
43 | }; | |
44 | ||
45 | static inline unsigned long btrfs_chunk_item_size(int num_stripes) | |
46 | { | |
47 | BUG_ON(num_stripes == 0); | |
48 | return sizeof(struct btrfs_chunk) + | |
49 | sizeof(struct btrfs_stripe) * (num_stripes - 1); | |
50 | } | |
51 | ||
52 | #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header)) | |
53 | #define BTRFS_LEAF_DATA_SIZE(fs_info) \ | |
54 | (__BTRFS_LEAF_DATA_SIZE(fs_info->nodesize)) | |
29c26ae8 QW |
55 | |
56 | struct btrfs_path { | |
57 | struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; | |
58 | int slots[BTRFS_MAX_LEVEL]; | |
59 | ||
60 | /* keep some upper locks as we walk down */ | |
61 | u8 lowest_level; | |
62 | }; | |
63 | ||
d4a704af MB |
64 | /* ioprio of readahead is set to idle */ |
65 | #define BTRFS_IOPRIO_READA (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_IDLE, 0)) | |
66 | ||
67 | #define BTRFS_DIRTY_METADATA_THRESH SZ_32M | |
68 | ||
69 | #define BTRFS_MAX_EXTENT_SIZE SZ_128M | |
70 | ||
75b0817b QW |
71 | enum btrfs_tree_block_status { |
72 | BTRFS_TREE_BLOCK_CLEAN, | |
73 | BTRFS_TREE_BLOCK_INVALID_NRITEMS, | |
74 | BTRFS_TREE_BLOCK_INVALID_PARENT_KEY, | |
75 | BTRFS_TREE_BLOCK_BAD_KEY_ORDER, | |
76 | BTRFS_TREE_BLOCK_INVALID_LEVEL, | |
77 | BTRFS_TREE_BLOCK_INVALID_FREE_SPACE, | |
78 | BTRFS_TREE_BLOCK_INVALID_OFFSETS, | |
79 | }; | |
80 | ||
bccee8bc QW |
81 | struct btrfs_root { |
82 | struct extent_buffer *node; | |
83 | struct btrfs_root_item root_item; | |
84 | struct btrfs_key root_key; | |
85 | struct btrfs_fs_info *fs_info; | |
86 | u64 objectid; | |
87 | u64 last_trans; | |
88 | ||
89 | int ref_cows; | |
90 | int track_dirty; | |
91 | ||
92 | u32 type; | |
93 | u64 last_inode_alloc; | |
94 | ||
95 | struct rb_node rb_node; | |
96 | }; | |
97 | ||
29c26ae8 | 98 | struct btrfs_trans_handle; |
be359425 QW |
99 | struct btrfs_device; |
100 | struct btrfs_fs_devices; | |
101 | struct btrfs_fs_info { | |
102 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; | |
103 | u8 *new_chunk_tree_uuid; | |
104 | struct btrfs_root *fs_root; | |
105 | struct btrfs_root *tree_root; | |
106 | struct btrfs_root *chunk_root; | |
107 | struct btrfs_root *csum_root; | |
108 | ||
109 | struct rb_root fs_root_tree; | |
110 | ||
111 | struct extent_io_tree extent_cache; | |
112 | ||
113 | /* logical->physical extent mapping */ | |
114 | struct btrfs_mapping_tree mapping_tree; | |
115 | ||
116 | u64 last_trans_committed; | |
117 | ||
118 | struct btrfs_super_block *super_copy; | |
119 | ||
120 | struct btrfs_fs_devices *fs_devices; | |
121 | ||
122 | /* Cached block sizes */ | |
123 | u32 nodesize; | |
124 | u32 sectorsize; | |
125 | u32 stripesize; | |
126 | }; | |
127 | ||
75b0817b QW |
128 | static inline u32 BTRFS_MAX_ITEM_SIZE(const struct btrfs_fs_info *info) |
129 | { | |
130 | return BTRFS_LEAF_DATA_SIZE(info) - sizeof(struct btrfs_item); | |
131 | } | |
132 | ||
133 | static inline u32 BTRFS_NODEPTRS_PER_BLOCK(const struct btrfs_fs_info *info) | |
134 | { | |
135 | return BTRFS_LEAF_DATA_SIZE(info) / sizeof(struct btrfs_key_ptr); | |
136 | } | |
137 | ||
138 | static inline u32 BTRFS_NODEPTRS_PER_EXTENT_BUFFER(const struct extent_buffer *eb) | |
139 | { | |
140 | BUG_ON(eb->fs_info && eb->fs_info->nodesize != eb->len); | |
141 | return __BTRFS_LEAF_DATA_SIZE(eb->len) / sizeof(struct btrfs_key_ptr); | |
142 | } | |
143 | ||
144 | #define BTRFS_FILE_EXTENT_INLINE_DATA_START \ | |
145 | (offsetof(struct btrfs_file_extent_item, disk_bytenr)) | |
146 | static inline u32 BTRFS_MAX_INLINE_DATA_SIZE(const struct btrfs_fs_info *info) | |
147 | { | |
148 | return BTRFS_MAX_ITEM_SIZE(info) - | |
149 | BTRFS_FILE_EXTENT_INLINE_DATA_START; | |
150 | } | |
151 | ||
152 | static inline u32 BTRFS_MAX_XATTR_SIZE(const struct btrfs_fs_info *info) | |
153 | { | |
154 | return BTRFS_MAX_ITEM_SIZE(info) - sizeof(struct btrfs_dir_item); | |
155 | } | |
156 | ||
d4a704af MB |
157 | /* |
158 | * File system states | |
159 | */ | |
160 | #define BTRFS_FS_STATE_ERROR 0 | |
161 | #define BTRFS_FS_STATE_REMOUNTING 1 | |
162 | #define BTRFS_FS_STATE_TRANS_ABORTED 2 | |
163 | #define BTRFS_FS_STATE_DEV_REPLACING 3 | |
164 | #define BTRFS_FS_STATE_DUMMY_FS_INFO 4 | |
165 | ||
9a9be5ec QW |
166 | #define read_eb_member(eb, ptr, type, member, result) ( \ |
167 | read_extent_buffer(eb, (char *)(result), \ | |
168 | ((unsigned long)(ptr)) + \ | |
169 | offsetof(type, member), \ | |
170 | sizeof(((type *)0)->member))) | |
171 | ||
172 | #define write_eb_member(eb, ptr, type, member, result) ( \ | |
173 | write_extent_buffer(eb, (char *)(result), \ | |
174 | ((unsigned long)(ptr)) + \ | |
175 | offsetof(type, member), \ | |
176 | sizeof(((type *)0)->member))) | |
177 | ||
be359425 QW |
178 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ |
179 | static inline u##bits btrfs_##name(const struct extent_buffer *eb) \ | |
180 | { \ | |
181 | const struct btrfs_header *h = (struct btrfs_header *)eb->data; \ | |
182 | return le##bits##_to_cpu(h->member); \ | |
183 | } \ | |
184 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ | |
185 | u##bits val) \ | |
186 | { \ | |
187 | struct btrfs_header *h = (struct btrfs_header *)eb->data; \ | |
188 | h->member = cpu_to_le##bits(val); \ | |
189 | } | |
190 | ||
191 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ | |
192 | static inline u##bits btrfs_##name(const struct extent_buffer *eb, \ | |
193 | const type *s) \ | |
194 | { \ | |
195 | unsigned long offset = (unsigned long)s; \ | |
196 | const type *p = (type *) (eb->data + offset); \ | |
197 | return get_unaligned_le##bits(&p->member); \ | |
198 | } \ | |
199 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ | |
200 | type *s, u##bits val) \ | |
201 | { \ | |
202 | unsigned long offset = (unsigned long)s; \ | |
203 | type *p = (type *) (eb->data + offset); \ | |
204 | put_unaligned_le##bits(val, &p->member); \ | |
205 | } | |
206 | ||
4aebb994 QW |
207 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
208 | static inline u##bits btrfs_##name(const type *s) \ | |
209 | { \ | |
210 | return le##bits##_to_cpu(s->member); \ | |
211 | } \ | |
212 | static inline void btrfs_set_##name(type *s, u##bits val) \ | |
213 | { \ | |
214 | s->member = cpu_to_le##bits(val); \ | |
215 | } | |
216 | ||
be359425 QW |
217 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
218 | BTRFS_SETGET_FUNCS(device_total_bytes, struct btrfs_dev_item, total_bytes, 64); | |
219 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); | |
220 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); | |
221 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); | |
222 | BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item, | |
223 | start_offset, 64); | |
224 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); | |
225 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); | |
226 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); | |
227 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); | |
228 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); | |
229 | BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64); | |
d4a704af | 230 | |
be359425 QW |
231 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
232 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, | |
233 | total_bytes, 64); | |
234 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, | |
235 | bytes_used, 64); | |
236 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, | |
237 | io_align, 32); | |
238 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, | |
239 | io_width, 32); | |
240 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, | |
241 | sector_size, 32); | |
242 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); | |
243 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, | |
244 | dev_group, 32); | |
245 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, | |
246 | seek_speed, 8); | |
247 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, | |
248 | bandwidth, 8); | |
249 | BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item, | |
250 | generation, 64); | |
d4a704af | 251 | |
be359425 QW |
252 | static inline char *btrfs_device_uuid(struct btrfs_dev_item *d) |
253 | { | |
254 | return (char *)d + offsetof(struct btrfs_dev_item, uuid); | |
255 | } | |
d4a704af | 256 | |
be359425 QW |
257 | static inline char *btrfs_device_fsid(struct btrfs_dev_item *d) |
258 | { | |
259 | return (char *)d + offsetof(struct btrfs_dev_item, fsid); | |
260 | } | |
9a9be5ec | 261 | |
be359425 QW |
262 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
263 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); | |
264 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); | |
265 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); | |
266 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); | |
267 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); | |
268 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); | |
269 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); | |
270 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); | |
271 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); | |
272 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); | |
9a9be5ec | 273 | |
be359425 QW |
274 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
275 | { | |
276 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); | |
277 | } | |
9a9be5ec | 278 | |
be359425 QW |
279 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); |
280 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); | |
281 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, | |
282 | stripe_len, 64); | |
283 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, | |
284 | io_align, 32); | |
285 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, | |
286 | io_width, 32); | |
287 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, | |
288 | sector_size, 32); | |
289 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); | |
290 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, | |
291 | num_stripes, 16); | |
292 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, | |
293 | sub_stripes, 16); | |
294 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); | |
295 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); | |
9a9be5ec | 296 | |
be359425 QW |
297 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, |
298 | int nr) | |
299 | { | |
300 | unsigned long offset = (unsigned long)c; | |
301 | offset += offsetof(struct btrfs_chunk, stripe); | |
302 | offset += nr * sizeof(struct btrfs_stripe); | |
303 | return (struct btrfs_stripe *)offset; | |
304 | } | |
9a9be5ec | 305 | |
be359425 QW |
306 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
307 | { | |
308 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); | |
309 | } | |
9a9be5ec | 310 | |
be359425 QW |
311 | static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, |
312 | struct btrfs_chunk *c, int nr) | |
313 | { | |
314 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); | |
315 | } | |
9a9be5ec | 316 | |
be359425 QW |
317 | static inline void btrfs_set_stripe_offset_nr(struct extent_buffer *eb, |
318 | struct btrfs_chunk *c, int nr, | |
319 | u64 val) | |
320 | { | |
321 | btrfs_set_stripe_offset(eb, btrfs_stripe_nr(c, nr), val); | |
322 | } | |
9a9be5ec | 323 | |
be359425 QW |
324 | static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, |
325 | struct btrfs_chunk *c, int nr) | |
326 | { | |
327 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); | |
328 | } | |
9a9be5ec | 329 | |
be359425 QW |
330 | static inline void btrfs_set_stripe_devid_nr(struct extent_buffer *eb, |
331 | struct btrfs_chunk *c, int nr, | |
332 | u64 val) | |
333 | { | |
334 | btrfs_set_stripe_devid(eb, btrfs_stripe_nr(c, nr), val); | |
335 | } | |
9a9be5ec | 336 | |
be359425 QW |
337 | /* struct btrfs_block_group_item */ |
338 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, | |
339 | used, 64); | |
340 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, | |
341 | used, 64); | |
342 | BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid, | |
343 | struct btrfs_block_group_item, chunk_objectid, 64); | |
d4a704af | 344 | |
be359425 QW |
345 | BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid, |
346 | struct btrfs_block_group_item, chunk_objectid, 64); | |
347 | BTRFS_SETGET_FUNCS(disk_block_group_flags, | |
348 | struct btrfs_block_group_item, flags, 64); | |
349 | BTRFS_SETGET_STACK_FUNCS(block_group_flags, | |
350 | struct btrfs_block_group_item, flags, 64); | |
351 | ||
352 | /* struct btrfs_free_space_info */ | |
353 | BTRFS_SETGET_FUNCS(free_space_extent_count, struct btrfs_free_space_info, | |
354 | extent_count, 32); | |
355 | BTRFS_SETGET_FUNCS(free_space_flags, struct btrfs_free_space_info, flags, 32); | |
356 | ||
357 | /* struct btrfs_inode_ref */ | |
358 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); | |
359 | BTRFS_SETGET_STACK_FUNCS(stack_inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); | |
360 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); | |
361 | ||
362 | /* struct btrfs_inode_extref */ | |
363 | BTRFS_SETGET_FUNCS(inode_extref_parent, struct btrfs_inode_extref, | |
364 | parent_objectid, 64); | |
365 | BTRFS_SETGET_FUNCS(inode_extref_name_len, struct btrfs_inode_extref, | |
366 | name_len, 16); | |
367 | BTRFS_SETGET_FUNCS(inode_extref_index, struct btrfs_inode_extref, index, 64); | |
368 | ||
369 | /* struct btrfs_inode_item */ | |
370 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); | |
371 | BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64); | |
372 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); | |
373 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); | |
374 | BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64); | |
375 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); | |
376 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); | |
377 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); | |
378 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); | |
379 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); | |
380 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); | |
381 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64); | |
382 | ||
383 | BTRFS_SETGET_STACK_FUNCS(stack_inode_generation, | |
384 | struct btrfs_inode_item, generation, 64); | |
385 | BTRFS_SETGET_STACK_FUNCS(stack_inode_sequence, | |
386 | struct btrfs_inode_item, sequence, 64); | |
387 | BTRFS_SETGET_STACK_FUNCS(stack_inode_transid, | |
388 | struct btrfs_inode_item, transid, 64); | |
389 | BTRFS_SETGET_STACK_FUNCS(stack_inode_size, | |
390 | struct btrfs_inode_item, size, 64); | |
391 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nbytes, | |
392 | struct btrfs_inode_item, nbytes, 64); | |
393 | BTRFS_SETGET_STACK_FUNCS(stack_inode_block_group, | |
394 | struct btrfs_inode_item, block_group, 64); | |
395 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nlink, | |
396 | struct btrfs_inode_item, nlink, 32); | |
397 | BTRFS_SETGET_STACK_FUNCS(stack_inode_uid, | |
398 | struct btrfs_inode_item, uid, 32); | |
399 | BTRFS_SETGET_STACK_FUNCS(stack_inode_gid, | |
400 | struct btrfs_inode_item, gid, 32); | |
401 | BTRFS_SETGET_STACK_FUNCS(stack_inode_mode, | |
402 | struct btrfs_inode_item, mode, 32); | |
403 | BTRFS_SETGET_STACK_FUNCS(stack_inode_rdev, | |
404 | struct btrfs_inode_item, rdev, 64); | |
405 | BTRFS_SETGET_STACK_FUNCS(stack_inode_flags, | |
406 | struct btrfs_inode_item, flags, 64); | |
407 | ||
408 | static inline struct btrfs_timespec * | |
409 | btrfs_inode_atime(struct btrfs_inode_item *inode_item) | |
410 | { | |
411 | unsigned long ptr = (unsigned long)inode_item; | |
412 | ptr += offsetof(struct btrfs_inode_item, atime); | |
413 | return (struct btrfs_timespec *)ptr; | |
d4a704af MB |
414 | } |
415 | ||
be359425 QW |
416 | static inline struct btrfs_timespec * |
417 | btrfs_inode_mtime(struct btrfs_inode_item *inode_item) | |
d4a704af | 418 | { |
be359425 QW |
419 | unsigned long ptr = (unsigned long)inode_item; |
420 | ptr += offsetof(struct btrfs_inode_item, mtime); | |
421 | return (struct btrfs_timespec *)ptr; | |
422 | } | |
d4a704af | 423 | |
be359425 QW |
424 | static inline struct btrfs_timespec * |
425 | btrfs_inode_ctime(struct btrfs_inode_item *inode_item) | |
426 | { | |
427 | unsigned long ptr = (unsigned long)inode_item; | |
428 | ptr += offsetof(struct btrfs_inode_item, ctime); | |
429 | return (struct btrfs_timespec *)ptr; | |
430 | } | |
d4a704af | 431 | |
be359425 QW |
432 | static inline struct btrfs_timespec * |
433 | btrfs_inode_otime(struct btrfs_inode_item *inode_item) | |
434 | { | |
435 | unsigned long ptr = (unsigned long)inode_item; | |
436 | ptr += offsetof(struct btrfs_inode_item, otime); | |
437 | return (struct btrfs_timespec *)ptr; | |
438 | } | |
d4a704af | 439 | |
be359425 QW |
440 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
441 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); | |
442 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_sec, struct btrfs_timespec, | |
443 | sec, 64); | |
444 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_nsec, struct btrfs_timespec, | |
445 | nsec, 32); | |
633967f9 | 446 | |
be359425 QW |
447 | /* struct btrfs_dev_extent */ |
448 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, | |
449 | chunk_tree, 64); | |
450 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, | |
451 | chunk_objectid, 64); | |
452 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, | |
453 | chunk_offset, 64); | |
454 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); | |
455 | ||
456 | BTRFS_SETGET_STACK_FUNCS(stack_dev_extent_length, struct btrfs_dev_extent, | |
457 | length, 64); | |
458 | ||
459 | static inline u8 *btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev) | |
460 | { | |
461 | unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid); | |
462 | return (u8 *)((unsigned long)dev + ptr); | |
d4a704af MB |
463 | } |
464 | ||
be359425 QW |
465 | |
466 | /* struct btrfs_extent_item */ | |
467 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 64); | |
468 | BTRFS_SETGET_STACK_FUNCS(stack_extent_refs, struct btrfs_extent_item, refs, 64); | |
469 | BTRFS_SETGET_FUNCS(extent_generation, struct btrfs_extent_item, | |
470 | generation, 64); | |
471 | BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64); | |
472 | BTRFS_SETGET_STACK_FUNCS(stack_extent_flags, struct btrfs_extent_item, flags, 64); | |
473 | ||
474 | BTRFS_SETGET_FUNCS(extent_refs_v0, struct btrfs_extent_item_v0, refs, 32); | |
475 | ||
476 | BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8); | |
477 | ||
478 | static inline void btrfs_tree_block_key(struct extent_buffer *eb, | |
479 | struct btrfs_tree_block_info *item, | |
480 | struct btrfs_disk_key *key) | |
d4a704af | 481 | { |
be359425 | 482 | read_eb_member(eb, item, struct btrfs_tree_block_info, key, key); |
d4a704af MB |
483 | } |
484 | ||
be359425 QW |
485 | static inline void btrfs_set_tree_block_key(struct extent_buffer *eb, |
486 | struct btrfs_tree_block_info *item, | |
487 | struct btrfs_disk_key *key) | |
d4a704af | 488 | { |
be359425 | 489 | write_eb_member(eb, item, struct btrfs_tree_block_info, key, key); |
d4a704af MB |
490 | } |
491 | ||
be359425 QW |
492 | BTRFS_SETGET_FUNCS(extent_data_ref_root, struct btrfs_extent_data_ref, |
493 | root, 64); | |
494 | BTRFS_SETGET_FUNCS(extent_data_ref_objectid, struct btrfs_extent_data_ref, | |
495 | objectid, 64); | |
496 | BTRFS_SETGET_FUNCS(extent_data_ref_offset, struct btrfs_extent_data_ref, | |
497 | offset, 64); | |
498 | BTRFS_SETGET_FUNCS(extent_data_ref_count, struct btrfs_extent_data_ref, | |
499 | count, 32); | |
500 | ||
501 | BTRFS_SETGET_FUNCS(shared_data_ref_count, struct btrfs_shared_data_ref, | |
502 | count, 32); | |
503 | ||
504 | BTRFS_SETGET_FUNCS(extent_inline_ref_type, struct btrfs_extent_inline_ref, | |
505 | type, 8); | |
506 | BTRFS_SETGET_FUNCS(extent_inline_ref_offset, struct btrfs_extent_inline_ref, | |
507 | offset, 64); | |
508 | BTRFS_SETGET_STACK_FUNCS(stack_extent_inline_ref_type, | |
509 | struct btrfs_extent_inline_ref, type, 8); | |
510 | BTRFS_SETGET_STACK_FUNCS(stack_extent_inline_ref_offset, | |
511 | struct btrfs_extent_inline_ref, offset, 64); | |
512 | ||
513 | static inline u32 btrfs_extent_inline_ref_size(int type) | |
d4a704af | 514 | { |
be359425 QW |
515 | if (type == BTRFS_TREE_BLOCK_REF_KEY || |
516 | type == BTRFS_SHARED_BLOCK_REF_KEY) | |
517 | return sizeof(struct btrfs_extent_inline_ref); | |
518 | if (type == BTRFS_SHARED_DATA_REF_KEY) | |
519 | return sizeof(struct btrfs_shared_data_ref) + | |
520 | sizeof(struct btrfs_extent_inline_ref); | |
521 | if (type == BTRFS_EXTENT_DATA_REF_KEY) | |
522 | return sizeof(struct btrfs_extent_data_ref) + | |
523 | offsetof(struct btrfs_extent_inline_ref, offset); | |
524 | BUG(); | |
525 | return 0; | |
d4a704af MB |
526 | } |
527 | ||
be359425 QW |
528 | BTRFS_SETGET_FUNCS(ref_root_v0, struct btrfs_extent_ref_v0, root, 64); |
529 | BTRFS_SETGET_FUNCS(ref_generation_v0, struct btrfs_extent_ref_v0, | |
530 | generation, 64); | |
531 | BTRFS_SETGET_FUNCS(ref_objectid_v0, struct btrfs_extent_ref_v0, objectid, 64); | |
532 | BTRFS_SETGET_FUNCS(ref_count_v0, struct btrfs_extent_ref_v0, count, 32); | |
d4a704af | 533 | |
be359425 QW |
534 | /* struct btrfs_node */ |
535 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
536 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); | |
d4a704af | 537 | |
be359425 QW |
538 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
539 | { | |
540 | unsigned long ptr; | |
541 | ptr = offsetof(struct btrfs_node, ptrs) + | |
542 | sizeof(struct btrfs_key_ptr) * nr; | |
543 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); | |
544 | } | |
545 | ||
546 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, | |
547 | int nr, u64 val) | |
548 | { | |
549 | unsigned long ptr; | |
550 | ptr = offsetof(struct btrfs_node, ptrs) + | |
551 | sizeof(struct btrfs_key_ptr) * nr; | |
552 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); | |
553 | } | |
554 | ||
555 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) | |
556 | { | |
557 | unsigned long ptr; | |
558 | ptr = offsetof(struct btrfs_node, ptrs) + | |
559 | sizeof(struct btrfs_key_ptr) * nr; | |
560 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); | |
561 | } | |
562 | ||
563 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, | |
564 | int nr, u64 val) | |
565 | { | |
566 | unsigned long ptr; | |
567 | ptr = offsetof(struct btrfs_node, ptrs) + | |
568 | sizeof(struct btrfs_key_ptr) * nr; | |
569 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); | |
570 | } | |
571 | ||
572 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) | |
573 | { | |
574 | return offsetof(struct btrfs_node, ptrs) + | |
575 | sizeof(struct btrfs_key_ptr) * nr; | |
576 | } | |
577 | ||
578 | static inline void btrfs_node_key(struct extent_buffer *eb, | |
579 | struct btrfs_disk_key *disk_key, int nr) | |
580 | { | |
581 | unsigned long ptr; | |
582 | ptr = btrfs_node_key_ptr_offset(nr); | |
583 | read_eb_member(eb, (struct btrfs_key_ptr *)ptr, | |
584 | struct btrfs_key_ptr, key, disk_key); | |
585 | } | |
586 | ||
587 | static inline void btrfs_set_node_key(struct extent_buffer *eb, | |
588 | struct btrfs_disk_key *disk_key, int nr) | |
589 | { | |
590 | unsigned long ptr; | |
591 | ptr = btrfs_node_key_ptr_offset(nr); | |
592 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, | |
593 | struct btrfs_key_ptr, key, disk_key); | |
594 | } | |
595 | ||
596 | /* struct btrfs_item */ | |
597 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); | |
598 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); | |
599 | ||
600 | static inline unsigned long btrfs_item_nr_offset(int nr) | |
601 | { | |
602 | return offsetof(struct btrfs_leaf, items) + | |
603 | sizeof(struct btrfs_item) * nr; | |
604 | } | |
605 | ||
606 | static inline struct btrfs_item *btrfs_item_nr(int nr) | |
607 | { | |
608 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); | |
609 | } | |
610 | ||
611 | static inline u32 btrfs_item_end(struct extent_buffer *eb, | |
612 | struct btrfs_item *item) | |
613 | { | |
614 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); | |
615 | } | |
616 | ||
617 | static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr) | |
618 | { | |
619 | return btrfs_item_end(eb, btrfs_item_nr(nr)); | |
620 | } | |
621 | ||
622 | static inline u32 btrfs_item_offset_nr(const struct extent_buffer *eb, int nr) | |
623 | { | |
624 | return btrfs_item_offset(eb, btrfs_item_nr(nr)); | |
625 | } | |
626 | ||
627 | static inline u32 btrfs_item_size_nr(struct extent_buffer *eb, int nr) | |
628 | { | |
629 | return btrfs_item_size(eb, btrfs_item_nr(nr)); | |
630 | } | |
631 | ||
632 | static inline void btrfs_item_key(struct extent_buffer *eb, | |
633 | struct btrfs_disk_key *disk_key, int nr) | |
634 | { | |
635 | struct btrfs_item *item = btrfs_item_nr(nr); | |
636 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
637 | } | |
638 | ||
639 | static inline void btrfs_set_item_key(struct extent_buffer *eb, | |
640 | struct btrfs_disk_key *disk_key, int nr) | |
641 | { | |
642 | struct btrfs_item *item = btrfs_item_nr(nr); | |
643 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
644 | } | |
645 | ||
646 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); | |
647 | ||
648 | /* | |
649 | * struct btrfs_root_ref | |
650 | */ | |
651 | BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64); | |
652 | BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64); | |
653 | BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16); | |
654 | ||
655 | BTRFS_SETGET_STACK_FUNCS(stack_root_ref_dirid, struct btrfs_root_ref, dirid, 64); | |
656 | BTRFS_SETGET_STACK_FUNCS(stack_root_ref_sequence, struct btrfs_root_ref, sequence, 64); | |
657 | BTRFS_SETGET_STACK_FUNCS(stack_root_ref_name_len, struct btrfs_root_ref, name_len, 16); | |
658 | ||
659 | /* struct btrfs_dir_item */ | |
660 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); | |
661 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); | |
662 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); | |
663 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); | |
664 | ||
665 | BTRFS_SETGET_STACK_FUNCS(stack_dir_data_len, struct btrfs_dir_item, data_len, 16); | |
666 | BTRFS_SETGET_STACK_FUNCS(stack_dir_type, struct btrfs_dir_item, type, 8); | |
667 | BTRFS_SETGET_STACK_FUNCS(stack_dir_name_len, struct btrfs_dir_item, name_len, 16); | |
668 | BTRFS_SETGET_STACK_FUNCS(stack_dir_transid, struct btrfs_dir_item, transid, 64); | |
669 | ||
670 | static inline void btrfs_dir_item_key(struct extent_buffer *eb, | |
671 | struct btrfs_dir_item *item, | |
672 | struct btrfs_disk_key *key) | |
673 | { | |
674 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); | |
675 | } | |
676 | ||
677 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, | |
678 | struct btrfs_dir_item *item, | |
679 | struct btrfs_disk_key *key) | |
680 | { | |
681 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); | |
682 | } | |
683 | ||
684 | /* struct btrfs_free_space_header */ | |
685 | BTRFS_SETGET_FUNCS(free_space_entries, struct btrfs_free_space_header, | |
686 | num_entries, 64); | |
687 | BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header, | |
688 | num_bitmaps, 64); | |
689 | BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header, | |
690 | generation, 64); | |
691 | ||
692 | static inline void btrfs_free_space_key(struct extent_buffer *eb, | |
693 | struct btrfs_free_space_header *h, | |
694 | struct btrfs_disk_key *key) | |
695 | { | |
696 | read_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
697 | } | |
698 | ||
699 | static inline void btrfs_set_free_space_key(struct extent_buffer *eb, | |
700 | struct btrfs_free_space_header *h, | |
701 | struct btrfs_disk_key *key) | |
702 | { | |
703 | write_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
704 | } | |
705 | ||
706 | /* struct btrfs_disk_key */ | |
707 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, | |
708 | objectid, 64); | |
709 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); | |
710 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); | |
711 | ||
712 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, | |
713 | struct btrfs_disk_key *disk) | |
714 | { | |
715 | cpu->offset = le64_to_cpu(disk->offset); | |
716 | cpu->type = disk->type; | |
717 | cpu->objectid = le64_to_cpu(disk->objectid); | |
718 | } | |
719 | ||
720 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
721 | const struct btrfs_key *cpu) | |
722 | { | |
723 | disk->offset = cpu_to_le64(cpu->offset); | |
724 | disk->type = cpu->type; | |
725 | disk->objectid = cpu_to_le64(cpu->objectid); | |
726 | } | |
727 | ||
728 | static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb, | |
729 | struct btrfs_key *key, int nr) | |
730 | { | |
731 | struct btrfs_disk_key disk_key; | |
732 | btrfs_node_key(eb, &disk_key, nr); | |
733 | btrfs_disk_key_to_cpu(key, &disk_key); | |
734 | } | |
735 | ||
736 | static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb, | |
737 | struct btrfs_key *key, int nr) | |
738 | { | |
739 | struct btrfs_disk_key disk_key; | |
740 | btrfs_item_key(eb, &disk_key, nr); | |
741 | btrfs_disk_key_to_cpu(key, &disk_key); | |
742 | } | |
743 | ||
744 | static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb, | |
745 | struct btrfs_dir_item *item, | |
746 | struct btrfs_key *key) | |
747 | { | |
748 | struct btrfs_disk_key disk_key; | |
749 | btrfs_dir_item_key(eb, item, &disk_key); | |
750 | btrfs_disk_key_to_cpu(key, &disk_key); | |
751 | } | |
752 | ||
753 | /* struct btrfs_header */ | |
754 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); | |
755 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, | |
756 | generation, 64); | |
757 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); | |
758 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); | |
759 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); | |
760 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); | |
761 | BTRFS_SETGET_STACK_FUNCS(stack_header_bytenr, struct btrfs_header, bytenr, 64); | |
762 | BTRFS_SETGET_STACK_FUNCS(stack_header_nritems, struct btrfs_header, nritems, | |
763 | 32); | |
764 | BTRFS_SETGET_STACK_FUNCS(stack_header_owner, struct btrfs_header, owner, 64); | |
765 | BTRFS_SETGET_STACK_FUNCS(stack_header_generation, struct btrfs_header, | |
766 | generation, 64); | |
767 | ||
768 | static inline int btrfs_header_flag(struct extent_buffer *eb, u64 flag) | |
769 | { | |
770 | return (btrfs_header_flags(eb) & flag) == flag; | |
771 | } | |
772 | ||
773 | static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) | |
774 | { | |
775 | u64 flags = btrfs_header_flags(eb); | |
776 | btrfs_set_header_flags(eb, flags | flag); | |
777 | return (flags & flag) == flag; | |
778 | } | |
779 | ||
780 | static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) | |
781 | { | |
782 | u64 flags = btrfs_header_flags(eb); | |
783 | btrfs_set_header_flags(eb, flags & ~flag); | |
784 | return (flags & flag) == flag; | |
785 | } | |
786 | ||
787 | static inline int btrfs_header_backref_rev(struct extent_buffer *eb) | |
788 | { | |
789 | u64 flags = btrfs_header_flags(eb); | |
790 | return flags >> BTRFS_BACKREF_REV_SHIFT; | |
791 | } | |
792 | ||
793 | static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb, | |
794 | int rev) | |
795 | { | |
796 | u64 flags = btrfs_header_flags(eb); | |
797 | flags &= ~BTRFS_BACKREF_REV_MASK; | |
798 | flags |= (u64)rev << BTRFS_BACKREF_REV_SHIFT; | |
799 | btrfs_set_header_flags(eb, flags); | |
800 | } | |
801 | ||
802 | static inline unsigned long btrfs_header_fsid(void) | |
803 | { | |
804 | return offsetof(struct btrfs_header, fsid); | |
805 | } | |
806 | ||
807 | static inline unsigned long btrfs_header_chunk_tree_uuid(struct extent_buffer *eb) | |
808 | { | |
809 | return offsetof(struct btrfs_header, chunk_tree_uuid); | |
810 | } | |
811 | ||
812 | static inline u8 *btrfs_header_csum(struct extent_buffer *eb) | |
813 | { | |
814 | unsigned long ptr = offsetof(struct btrfs_header, csum); | |
815 | return (u8 *)ptr; | |
816 | } | |
817 | ||
818 | static inline int btrfs_is_leaf(struct extent_buffer *eb) | |
819 | { | |
820 | return (btrfs_header_level(eb) == 0); | |
821 | } | |
822 | ||
823 | /* struct btrfs_root_item */ | |
824 | BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, | |
825 | generation, 64); | |
826 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); | |
827 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); | |
828 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); | |
829 | ||
830 | BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, | |
831 | generation, 64); | |
832 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); | |
833 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); | |
834 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); | |
835 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); | |
836 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64); | |
837 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); | |
838 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); | |
839 | BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item, | |
840 | last_snapshot, 64); | |
841 | BTRFS_SETGET_STACK_FUNCS(root_generation_v2, struct btrfs_root_item, | |
842 | generation_v2, 64); | |
843 | BTRFS_SETGET_STACK_FUNCS(root_ctransid, struct btrfs_root_item, | |
844 | ctransid, 64); | |
845 | BTRFS_SETGET_STACK_FUNCS(root_otransid, struct btrfs_root_item, | |
846 | otransid, 64); | |
847 | BTRFS_SETGET_STACK_FUNCS(root_stransid, struct btrfs_root_item, | |
848 | stransid, 64); | |
849 | BTRFS_SETGET_STACK_FUNCS(root_rtransid, struct btrfs_root_item, | |
850 | rtransid, 64); | |
851 | ||
852 | static inline struct btrfs_timespec* btrfs_root_ctime( | |
853 | struct btrfs_root_item *root_item) | |
854 | { | |
855 | unsigned long ptr = (unsigned long)root_item; | |
856 | ptr += offsetof(struct btrfs_root_item, ctime); | |
857 | return (struct btrfs_timespec *)ptr; | |
858 | } | |
859 | ||
860 | static inline struct btrfs_timespec* btrfs_root_otime( | |
861 | struct btrfs_root_item *root_item) | |
862 | { | |
863 | unsigned long ptr = (unsigned long)root_item; | |
864 | ptr += offsetof(struct btrfs_root_item, otime); | |
865 | return (struct btrfs_timespec *)ptr; | |
866 | } | |
867 | ||
868 | static inline struct btrfs_timespec* btrfs_root_stime( | |
869 | struct btrfs_root_item *root_item) | |
870 | { | |
871 | unsigned long ptr = (unsigned long)root_item; | |
872 | ptr += offsetof(struct btrfs_root_item, stime); | |
873 | return (struct btrfs_timespec *)ptr; | |
874 | } | |
875 | ||
876 | static inline struct btrfs_timespec* btrfs_root_rtime( | |
877 | struct btrfs_root_item *root_item) | |
878 | { | |
879 | unsigned long ptr = (unsigned long)root_item; | |
880 | ptr += offsetof(struct btrfs_root_item, rtime); | |
881 | return (struct btrfs_timespec *)ptr; | |
882 | } | |
883 | ||
884 | /* struct btrfs_root_backup */ | |
885 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root, struct btrfs_root_backup, | |
886 | tree_root, 64); | |
887 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_gen, struct btrfs_root_backup, | |
888 | tree_root_gen, 64); | |
889 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_level, struct btrfs_root_backup, | |
890 | tree_root_level, 8); | |
891 | ||
892 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root, struct btrfs_root_backup, | |
893 | chunk_root, 64); | |
894 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_gen, struct btrfs_root_backup, | |
895 | chunk_root_gen, 64); | |
896 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_level, struct btrfs_root_backup, | |
897 | chunk_root_level, 8); | |
898 | ||
899 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root, struct btrfs_root_backup, | |
900 | extent_root, 64); | |
901 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_gen, struct btrfs_root_backup, | |
902 | extent_root_gen, 64); | |
903 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_level, struct btrfs_root_backup, | |
904 | extent_root_level, 8); | |
905 | ||
906 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root, struct btrfs_root_backup, | |
907 | fs_root, 64); | |
908 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_gen, struct btrfs_root_backup, | |
909 | fs_root_gen, 64); | |
910 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_level, struct btrfs_root_backup, | |
911 | fs_root_level, 8); | |
912 | ||
913 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root, struct btrfs_root_backup, | |
914 | dev_root, 64); | |
915 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_gen, struct btrfs_root_backup, | |
916 | dev_root_gen, 64); | |
917 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_level, struct btrfs_root_backup, | |
918 | dev_root_level, 8); | |
919 | ||
920 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root, struct btrfs_root_backup, | |
921 | csum_root, 64); | |
922 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_gen, struct btrfs_root_backup, | |
923 | csum_root_gen, 64); | |
924 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_level, struct btrfs_root_backup, | |
925 | csum_root_level, 8); | |
926 | BTRFS_SETGET_STACK_FUNCS(backup_total_bytes, struct btrfs_root_backup, | |
927 | total_bytes, 64); | |
928 | BTRFS_SETGET_STACK_FUNCS(backup_bytes_used, struct btrfs_root_backup, | |
929 | bytes_used, 64); | |
930 | BTRFS_SETGET_STACK_FUNCS(backup_num_devices, struct btrfs_root_backup, | |
931 | num_devices, 64); | |
4aebb994 QW |
932 | |
933 | /* struct btrfs_super_block */ | |
934 | ||
935 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); | |
936 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); | |
937 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, | |
938 | generation, 64); | |
939 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); | |
940 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, | |
941 | struct btrfs_super_block, sys_chunk_array_size, 32); | |
942 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation, | |
943 | struct btrfs_super_block, chunk_root_generation, 64); | |
944 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, | |
945 | root_level, 8); | |
946 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, | |
947 | chunk_root, 64); | |
948 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, | |
949 | chunk_root_level, 8); | |
950 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, | |
951 | log_root, 64); | |
952 | BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block, | |
953 | log_root_transid, 64); | |
954 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, | |
955 | log_root_level, 8); | |
956 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, | |
957 | total_bytes, 64); | |
958 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, | |
959 | bytes_used, 64); | |
960 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, | |
961 | sectorsize, 32); | |
962 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, | |
963 | nodesize, 32); | |
964 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, | |
965 | stripesize, 32); | |
966 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, | |
967 | root_dir_objectid, 64); | |
968 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, | |
969 | num_devices, 64); | |
970 | BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block, | |
971 | compat_flags, 64); | |
972 | BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block, | |
973 | compat_ro_flags, 64); | |
974 | BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block, | |
975 | incompat_flags, 64); | |
976 | BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block, | |
977 | csum_type, 16); | |
978 | BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block, | |
979 | cache_generation, 64); | |
980 | BTRFS_SETGET_STACK_FUNCS(super_uuid_tree_generation, struct btrfs_super_block, | |
981 | uuid_tree_generation, 64); | |
982 | BTRFS_SETGET_STACK_FUNCS(super_magic, struct btrfs_super_block, magic, 64); | |
983 | ||
be359425 QW |
984 | static inline unsigned long btrfs_leaf_data(struct extent_buffer *l) |
985 | { | |
986 | return offsetof(struct btrfs_leaf, items); | |
987 | } | |
988 | ||
989 | /* struct btrfs_file_extent_item */ | |
990 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); | |
991 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_type, struct btrfs_file_extent_item, type, 8); | |
992 | ||
993 | static inline unsigned long btrfs_file_extent_inline_start(struct | |
994 | btrfs_file_extent_item *e) | |
995 | { | |
996 | unsigned long offset = (unsigned long)e; | |
997 | offset += offsetof(struct btrfs_file_extent_item, disk_bytenr); | |
998 | return offset; | |
999 | } | |
1000 | ||
1001 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
1002 | { | |
1003 | return offsetof(struct btrfs_file_extent_item, disk_bytenr) + datasize; | |
1004 | } | |
1005 | ||
1006 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, | |
1007 | disk_bytenr, 64); | |
1008 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_bytenr, struct btrfs_file_extent_item, | |
1009 | disk_bytenr, 64); | |
1010 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, | |
1011 | generation, 64); | |
1012 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_generation, struct btrfs_file_extent_item, | |
1013 | generation, 64); | |
1014 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, | |
1015 | disk_num_bytes, 64); | |
1016 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, | |
1017 | offset, 64); | |
1018 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_offset, struct btrfs_file_extent_item, | |
1019 | offset, 64); | |
1020 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, | |
1021 | num_bytes, 64); | |
1022 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_num_bytes, struct btrfs_file_extent_item, | |
1023 | num_bytes, 64); | |
1024 | BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, | |
1025 | ram_bytes, 64); | |
1026 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_ram_bytes, struct btrfs_file_extent_item, | |
1027 | ram_bytes, 64); | |
1028 | BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, | |
1029 | compression, 8); | |
1030 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_compression, struct btrfs_file_extent_item, | |
1031 | compression, 8); | |
1032 | BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, | |
1033 | encryption, 8); | |
1034 | BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, | |
1035 | other_encoding, 16); | |
1036 | ||
1037 | /* btrfs_qgroup_status_item */ | |
1038 | BTRFS_SETGET_FUNCS(qgroup_status_version, struct btrfs_qgroup_status_item, | |
1039 | version, 64); | |
1040 | BTRFS_SETGET_FUNCS(qgroup_status_generation, struct btrfs_qgroup_status_item, | |
1041 | generation, 64); | |
1042 | BTRFS_SETGET_FUNCS(qgroup_status_flags, struct btrfs_qgroup_status_item, | |
1043 | flags, 64); | |
1044 | BTRFS_SETGET_FUNCS(qgroup_status_rescan, struct btrfs_qgroup_status_item, | |
1045 | rescan, 64); | |
1046 | ||
1047 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_status_version, | |
1048 | struct btrfs_qgroup_status_item, version, 64); | |
1049 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_status_generation, | |
1050 | struct btrfs_qgroup_status_item, generation, 64); | |
1051 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_status_flags, | |
1052 | struct btrfs_qgroup_status_item, flags, 64); | |
1053 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_status_rescan, | |
1054 | struct btrfs_qgroup_status_item, rescan, 64); | |
1055 | ||
1056 | /* btrfs_qgroup_info_item */ | |
1057 | BTRFS_SETGET_FUNCS(qgroup_info_generation, struct btrfs_qgroup_info_item, | |
1058 | generation, 64); | |
1059 | BTRFS_SETGET_FUNCS(qgroup_info_referenced, struct btrfs_qgroup_info_item, | |
1060 | rfer, 64); | |
1061 | BTRFS_SETGET_FUNCS(qgroup_info_referenced_compressed, | |
1062 | struct btrfs_qgroup_info_item, rfer_cmpr, 64); | |
1063 | BTRFS_SETGET_FUNCS(qgroup_info_exclusive, struct btrfs_qgroup_info_item, | |
1064 | excl, 64); | |
1065 | BTRFS_SETGET_FUNCS(qgroup_info_exclusive_compressed, | |
1066 | struct btrfs_qgroup_info_item, excl_cmpr, 64); | |
1067 | ||
1068 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_generation, | |
1069 | struct btrfs_qgroup_info_item, generation, 64); | |
1070 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_referenced, | |
1071 | struct btrfs_qgroup_info_item, rfer, 64); | |
1072 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_referenced_compressed, | |
1073 | struct btrfs_qgroup_info_item, rfer_cmpr, 64); | |
1074 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_exclusive, | |
1075 | struct btrfs_qgroup_info_item, excl, 64); | |
1076 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_exclusive_compressed, | |
1077 | struct btrfs_qgroup_info_item, excl_cmpr, 64); | |
1078 | ||
1079 | /* btrfs_qgroup_limit_item */ | |
1080 | BTRFS_SETGET_FUNCS(qgroup_limit_flags, struct btrfs_qgroup_limit_item, | |
1081 | flags, 64); | |
1082 | BTRFS_SETGET_FUNCS(qgroup_limit_max_referenced, struct btrfs_qgroup_limit_item, | |
1083 | max_rfer, 64); | |
1084 | BTRFS_SETGET_FUNCS(qgroup_limit_max_exclusive, struct btrfs_qgroup_limit_item, | |
1085 | max_excl, 64); | |
1086 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_referenced, struct btrfs_qgroup_limit_item, | |
1087 | rsv_rfer, 64); | |
1088 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_exclusive, struct btrfs_qgroup_limit_item, | |
1089 | rsv_excl, 64); | |
1090 | ||
1091 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_flags, | |
1092 | struct btrfs_qgroup_limit_item, flags, 64); | |
1093 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_max_referenced, | |
1094 | struct btrfs_qgroup_limit_item, max_rfer, 64); | |
1095 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_max_exclusive, | |
1096 | struct btrfs_qgroup_limit_item, max_excl, 64); | |
1097 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_rsv_referenced, | |
1098 | struct btrfs_qgroup_limit_item, rsv_rfer, 64); | |
1099 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_rsv_exclusive, | |
1100 | struct btrfs_qgroup_limit_item, rsv_excl, 64); | |
1101 | ||
1102 | /* btrfs_balance_item */ | |
1103 | BTRFS_SETGET_FUNCS(balance_item_flags, struct btrfs_balance_item, flags, 64); | |
1104 | ||
1105 | static inline struct btrfs_disk_balance_args* btrfs_balance_item_data( | |
1106 | struct extent_buffer *eb, struct btrfs_balance_item *bi) | |
1107 | { | |
1108 | unsigned long offset = (unsigned long)bi; | |
1109 | struct btrfs_balance_item *p; | |
1110 | p = (struct btrfs_balance_item *)(eb->data + offset); | |
1111 | return &p->data; | |
1112 | } | |
1113 | ||
1114 | static inline struct btrfs_disk_balance_args* btrfs_balance_item_meta( | |
1115 | struct extent_buffer *eb, struct btrfs_balance_item *bi) | |
1116 | { | |
1117 | unsigned long offset = (unsigned long)bi; | |
1118 | struct btrfs_balance_item *p; | |
1119 | p = (struct btrfs_balance_item *)(eb->data + offset); | |
1120 | return &p->meta; | |
1121 | } | |
1122 | ||
1123 | static inline struct btrfs_disk_balance_args* btrfs_balance_item_sys( | |
1124 | struct extent_buffer *eb, struct btrfs_balance_item *bi) | |
1125 | { | |
1126 | unsigned long offset = (unsigned long)bi; | |
1127 | struct btrfs_balance_item *p; | |
1128 | p = (struct btrfs_balance_item *)(eb->data + offset); | |
1129 | return &p->sys; | |
1130 | } | |
1131 | ||
1132 | static inline u64 btrfs_dev_stats_value(const struct extent_buffer *eb, | |
1133 | const struct btrfs_dev_stats_item *ptr, | |
1134 | int index) | |
1135 | { | |
1136 | u64 val; | |
1137 | ||
1138 | read_extent_buffer(eb, &val, | |
1139 | offsetof(struct btrfs_dev_stats_item, values) + | |
1140 | ((unsigned long)ptr) + (index * sizeof(u64)), | |
1141 | sizeof(val)); | |
1142 | return val; | |
1143 | } | |
1144 | ||
1145 | /* | |
1146 | * this returns the number of bytes used by the item on disk, minus the | |
1147 | * size of any extent headers. If a file is compressed on disk, this is | |
1148 | * the compressed size | |
1149 | */ | |
1150 | static inline u32 btrfs_file_extent_inline_item_len(struct extent_buffer *eb, | |
1151 | struct btrfs_item *e) | |
1152 | { | |
1153 | unsigned long offset; | |
1154 | offset = offsetof(struct btrfs_file_extent_item, disk_bytenr); | |
1155 | return btrfs_item_size(eb, e) - offset; | |
1156 | } | |
1157 | ||
1158 | #define btrfs_fs_incompat(fs_info, opt) \ | |
1159 | __btrfs_fs_incompat((fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
1160 | ||
1161 | static inline bool __btrfs_fs_incompat(struct btrfs_fs_info *fs_info, u64 flag) | |
1162 | { | |
1163 | struct btrfs_super_block *disk_super; | |
1164 | disk_super = fs_info->super_copy; | |
1165 | return !!(btrfs_super_incompat_flags(disk_super) & flag); | |
1166 | } | |
1167 | ||
1168 | #define btrfs_fs_compat_ro(fs_info, opt) \ | |
1169 | __btrfs_fs_compat_ro((fs_info), BTRFS_FEATURE_COMPAT_RO_##opt) | |
1170 | ||
1171 | static inline int __btrfs_fs_compat_ro(struct btrfs_fs_info *fs_info, u64 flag) | |
1172 | { | |
1173 | struct btrfs_super_block *disk_super; | |
1174 | disk_super = fs_info->super_copy; | |
1175 | return !!(btrfs_super_compat_ro_flags(disk_super) & flag); | |
1176 | } | |
1177 | ||
1178 | /* helper function to cast into the data area of the leaf. */ | |
1179 | #define btrfs_item_ptr(leaf, slot, type) \ | |
1180 | ((type *)(btrfs_leaf_data(leaf) + \ | |
1181 | btrfs_item_offset_nr(leaf, slot))) | |
1182 | ||
1183 | #define btrfs_item_ptr_offset(leaf, slot) \ | |
1184 | ((unsigned long)(btrfs_leaf_data(leaf) + \ | |
1185 | btrfs_item_offset_nr(leaf, slot))) | |
1186 | ||
1187 | static inline u64 btrfs_name_hash(const char *name, int len) | |
1188 | { | |
1189 | return (u64)crc32c((u32)~1, (u8 *)name, len); | |
1190 | } | |
1191 | ||
1192 | /* | |
1193 | * Figure the key offset of an extended inode ref | |
1194 | */ | |
1195 | static inline u64 btrfs_extref_hash(u64 parent_objectid, const char *name, | |
1196 | int len) | |
1197 | { | |
1198 | return crc32(parent_objectid, (u8 *)name, len); | |
1199 | } | |
1200 | ||
1201 | union btrfs_tree_node { | |
1202 | struct btrfs_header header; | |
1203 | struct btrfs_leaf leaf; | |
1204 | struct btrfs_node node; | |
1205 | }; | |
1206 | ||
be359425 QW |
1207 | #define btrfs_path_item_ptr(p,t) \ |
1208 | ((t *) btrfs_path_leaf_data((p))) | |
1209 | ||
1210 | u16 btrfs_super_csum_size(const struct btrfs_super_block *s); | |
1211 | const char *btrfs_super_csum_name(u16 csum_type); | |
1212 | u16 btrfs_csum_type_size(u16 csum_type); | |
1213 | size_t btrfs_super_num_csums(void); | |
1214 | ||
f06bfcf5 QW |
1215 | /* root-tree.c */ |
1216 | int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, | |
1217 | struct btrfs_root_item *item, struct btrfs_key *key); | |
1218 | ||
cafffc50 QW |
1219 | /* dir-item.c */ |
1220 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, | |
1221 | struct btrfs_root *root, | |
1222 | struct btrfs_path *path, u64 dir, | |
1223 | const char *name, int name_len, | |
1224 | int mod); | |
325dd1f6 QW |
1225 | typedef int (*btrfs_iter_dir_callback_t)(struct btrfs_root *root, |
1226 | struct extent_buffer *eb, | |
1227 | struct btrfs_dir_item *di); | |
1228 | int btrfs_iter_dir(struct btrfs_root *root, u64 ino, | |
1229 | btrfs_iter_dir_callback_t callback); | |
c921aa20 QW |
1230 | /* inode.c */ |
1231 | int btrfs_lookup_path(struct btrfs_root *root, u64 ino, const char *filename, | |
1232 | struct btrfs_root **root_ret, u64 *ino_ret, | |
1233 | u8 *type_ret, int symlink_limit); | |
a26a6bed QW |
1234 | int btrfs_read_extent_inline(struct btrfs_path *path, |
1235 | struct btrfs_file_extent_item *fi, char *dest); | |
1236 | int btrfs_read_extent_reg(struct btrfs_path *path, | |
1237 | struct btrfs_file_extent_item *fi, u64 offset, | |
1238 | int len, char *dest); | |
cafffc50 | 1239 | |
75b0817b QW |
1240 | /* ctree.c */ |
1241 | int btrfs_comp_cpu_keys(const struct btrfs_key *k1, const struct btrfs_key *k2); | |
1242 | enum btrfs_tree_block_status | |
1243 | btrfs_check_node(struct btrfs_fs_info *fs_info, | |
1244 | struct btrfs_disk_key *parent_key, struct extent_buffer *buf); | |
1245 | enum btrfs_tree_block_status | |
1246 | btrfs_check_leaf(struct btrfs_fs_info *fs_info, | |
1247 | struct btrfs_disk_key *parent_key, struct extent_buffer *buf); | |
29c26ae8 QW |
1248 | struct extent_buffer *read_node_slot(struct btrfs_fs_info *fs_info, |
1249 | struct extent_buffer *parent, int slot); | |
1250 | int btrfs_previous_item(struct btrfs_root *root, | |
1251 | struct btrfs_path *path, u64 min_objectid, | |
1252 | int type); | |
1253 | int btrfs_next_sibling_tree_block(struct btrfs_fs_info *fs_info, | |
1254 | struct btrfs_path *path); | |
1255 | /* | |
1256 | * Walk up the tree as far as necessary to find the next leaf. | |
1257 | * | |
1258 | * returns 0 if it found something or 1 if there are no greater leaves. | |
1259 | * returns < 0 on io errors. | |
1260 | */ | |
1261 | static inline int btrfs_next_leaf(struct btrfs_root *root, | |
1262 | struct btrfs_path *path) | |
1263 | { | |
1264 | path->lowest_level = 0; | |
1265 | return btrfs_next_sibling_tree_block(root->fs_info, path); | |
1266 | } | |
1267 | ||
1268 | static inline int btrfs_next_item(struct btrfs_root *root, | |
1269 | struct btrfs_path *p) | |
1270 | { | |
1271 | ++p->slots[0]; | |
1272 | if (p->slots[0] >= btrfs_header_nritems(p->nodes[0])) | |
1273 | return btrfs_next_leaf(root, p); | |
1274 | return 0; | |
1275 | } | |
1276 | ||
1277 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); | |
75b0817b | 1278 | int btrfs_leaf_free_space(struct extent_buffer *leaf); |
29c26ae8 QW |
1279 | int btrfs_search_slot(struct btrfs_trans_handle *trans, |
1280 | struct btrfs_root *root, const struct btrfs_key *key, | |
1281 | struct btrfs_path *p, int ins_len, int cow); | |
1282 | int btrfs_search_slot_for_read(struct btrfs_root *root, | |
1283 | const struct btrfs_key *key, | |
1284 | struct btrfs_path *p, int find_higher, | |
1285 | int return_any); | |
1286 | void btrfs_release_path(struct btrfs_path *p); | |
1287 | struct btrfs_path *btrfs_alloc_path(void); | |
1288 | void btrfs_free_path(struct btrfs_path *p); | |
1289 | static inline void btrfs_init_path(struct btrfs_path *p) | |
1290 | { | |
1291 | memset(p, 0, sizeof(*p)); | |
1292 | } | |
1293 | int btrfs_bin_search(struct extent_buffer *eb, const struct btrfs_key *key, | |
1294 | int *slot); | |
1295 | int btrfs_find_item(struct btrfs_root *fs_root, struct btrfs_path *found_path, | |
1296 | u64 iobjectid, u64 ioff, u8 key_type, | |
1297 | struct btrfs_key *found_key); | |
d4a704af | 1298 | #endif /* __BTRFS_CTREE_H__ */ |