1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | |
3 | #ifndef BTRFS_ACCESSORS_H |
4 | #define BTRFS_ACCESSORS_H |
5 | |
6 | #include <asm/unaligned.h> |
7 | #include <linux/stddef.h> |
8 | #include <linux/types.h> |
9 | #include <linux/align.h> |
10 | #include <linux/build_bug.h> |
11 | #include <linux/compiler.h> |
12 | #include <linux/string.h> |
13 | #include <linux/mm.h> |
14 | #include <uapi/linux/btrfs_tree.h> |
15 | |
16 | struct extent_buffer; |
17 | |
18 | struct btrfs_map_token { |
19 | struct extent_buffer *eb; |
20 | char *kaddr; |
21 | unsigned long offset; |
22 | }; |
23 | |
24 | void btrfs_init_map_token(struct btrfs_map_token *token, struct extent_buffer *eb); |
25 | |
26 | /* |
27 | * Some macros to generate set/get functions for the struct fields. This |
28 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple one |
29 | * for u8: |
30 | */ |
31 | #define le8_to_cpu(v) (v) |
32 | #define cpu_to_le8(v) (v) |
33 | #define __le8 u8 |
34 | |
35 | static inline u8 get_unaligned_le8(const void *p) |
36 | { |
37 | return *(u8 *)p; |
38 | } |
39 | |
40 | static inline void put_unaligned_le8(u8 val, void *p) |
41 | { |
42 | *(u8 *)p = val; |
43 | } |
44 | |
45 | #define read_eb_member(eb, ptr, type, member, result) (\ |
46 | read_extent_buffer(eb, (char *)(result), \ |
47 | ((unsigned long)(ptr)) + \ |
48 | offsetof(type, member), \ |
49 | sizeof_field(type, member))) |
50 | |
51 | #define write_eb_member(eb, ptr, type, member, result) (\ |
52 | write_extent_buffer(eb, (char *)(result), \ |
53 | ((unsigned long)(ptr)) + \ |
54 | offsetof(type, member), \ |
55 | sizeof_field(type, member))) |
56 | |
57 | #define DECLARE_BTRFS_SETGET_BITS(bits) \ |
58 | u##bits btrfs_get_token_##bits(struct btrfs_map_token *token, \ |
59 | const void *ptr, unsigned long off); \ |
60 | void btrfs_set_token_##bits(struct btrfs_map_token *token, \ |
61 | const void *ptr, unsigned long off, \ |
62 | u##bits val); \ |
63 | u##bits btrfs_get_##bits(const struct extent_buffer *eb, \ |
64 | const void *ptr, unsigned long off); \ |
65 | void btrfs_set_##bits(const struct extent_buffer *eb, void *ptr, \ |
66 | unsigned long off, u##bits val); |
67 | |
68 | DECLARE_BTRFS_SETGET_BITS(8) |
69 | DECLARE_BTRFS_SETGET_BITS(16) |
70 | DECLARE_BTRFS_SETGET_BITS(32) |
71 | DECLARE_BTRFS_SETGET_BITS(64) |
72 | |
73 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
74 | static inline u##bits btrfs_##name(const struct extent_buffer *eb, \ |
75 | const type *s) \ |
76 | { \ |
77 | static_assert(sizeof(u##bits) == sizeof_field(type, member)); \ |
78 | return btrfs_get_##bits(eb, s, offsetof(type, member)); \ |
79 | } \ |
80 | static inline void btrfs_set_##name(const struct extent_buffer *eb, type *s, \ |
81 | u##bits val) \ |
82 | { \ |
83 | static_assert(sizeof(u##bits) == sizeof_field(type, member)); \ |
84 | btrfs_set_##bits(eb, s, offsetof(type, member), val); \ |
85 | } \ |
86 | static inline u##bits btrfs_token_##name(struct btrfs_map_token *token, \ |
87 | const type *s) \ |
88 | { \ |
89 | static_assert(sizeof(u##bits) == sizeof_field(type, member)); \ |
90 | return btrfs_get_token_##bits(token, s, offsetof(type, member));\ |
91 | } \ |
92 | static inline void btrfs_set_token_##name(struct btrfs_map_token *token,\ |
93 | type *s, u##bits val) \ |
94 | { \ |
95 | static_assert(sizeof(u##bits) == sizeof_field(type, member)); \ |
96 | btrfs_set_token_##bits(token, s, offsetof(type, member), val); \ |
97 | } |
98 | |
99 | #define (name, type, member, bits) \ |
100 | static inline u##bits btrfs_##name(const struct extent_buffer *eb) \ |
101 | { \ |
102 | const type *p = folio_address(eb->folios[0]) + \ |
103 | offset_in_page(eb->start); \ |
104 | return get_unaligned_le##bits(&p->member); \ |
105 | } \ |
106 | static inline void btrfs_set_##name(const struct extent_buffer *eb, \ |
107 | u##bits val) \ |
108 | { \ |
109 | type *p = folio_address(eb->folios[0]) + offset_in_page(eb->start); \ |
110 | put_unaligned_le##bits(val, &p->member); \ |
111 | } |
112 | |
113 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
114 | static inline u##bits btrfs_##name(const type *s) \ |
115 | { \ |
116 | return get_unaligned_le##bits(&s->member); \ |
117 | } \ |
118 | static inline void btrfs_set_##name(type *s, u##bits val) \ |
119 | { \ |
120 | put_unaligned_le##bits(val, &s->member); \ |
121 | } |
122 | |
123 | static inline u64 btrfs_device_total_bytes(const struct extent_buffer *eb, |
124 | struct btrfs_dev_item *s) |
125 | { |
126 | static_assert(sizeof(u64) == sizeof_field(struct btrfs_dev_item, total_bytes)); |
127 | return btrfs_get_64(eb, ptr: s, offsetof(struct btrfs_dev_item, total_bytes)); |
128 | } |
129 | static inline void btrfs_set_device_total_bytes(const struct extent_buffer *eb, |
130 | struct btrfs_dev_item *s, |
131 | u64 val) |
132 | { |
133 | static_assert(sizeof(u64) == sizeof_field(struct btrfs_dev_item, total_bytes)); |
134 | WARN_ON(!IS_ALIGNED(val, eb->fs_info->sectorsize)); |
135 | btrfs_set_64(eb, ptr: s, offsetof(struct btrfs_dev_item, total_bytes), val); |
136 | } |
137 | |
138 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
139 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); |
140 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); |
141 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); |
142 | BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item, start_offset, 64); |
143 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); |
144 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); |
145 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
146 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); |
147 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); |
148 | BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64); |
149 | |
150 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
151 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, |
152 | total_bytes, 64); |
153 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, |
154 | bytes_used, 64); |
155 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, |
156 | io_align, 32); |
157 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, |
158 | io_width, 32); |
159 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, |
160 | sector_size, 32); |
161 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); |
162 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, dev_group, 32); |
163 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, |
164 | seek_speed, 8); |
165 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, |
166 | bandwidth, 8); |
167 | BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item, |
168 | generation, 64); |
169 | |
170 | static inline unsigned long btrfs_device_uuid(struct btrfs_dev_item *d) |
171 | { |
172 | return (unsigned long)d + offsetof(struct btrfs_dev_item, uuid); |
173 | } |
174 | |
175 | static inline unsigned long btrfs_device_fsid(struct btrfs_dev_item *d) |
176 | { |
177 | return (unsigned long)d + offsetof(struct btrfs_dev_item, fsid); |
178 | } |
179 | |
180 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
181 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
182 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); |
183 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); |
184 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); |
185 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); |
186 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); |
187 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); |
188 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
189 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
190 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); |
191 | |
192 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
193 | { |
194 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); |
195 | } |
196 | |
197 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); |
198 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
199 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, |
200 | stripe_len, 64); |
201 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, io_align, 32); |
202 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, io_width, 32); |
203 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, |
204 | sector_size, 32); |
205 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); |
206 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, |
207 | num_stripes, 16); |
208 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
209 | sub_stripes, 16); |
210 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
211 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); |
212 | |
213 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, int nr) |
214 | { |
215 | unsigned long offset = (unsigned long)c; |
216 | |
217 | offset += offsetof(struct btrfs_chunk, stripe); |
218 | offset += nr * sizeof(struct btrfs_stripe); |
219 | return (struct btrfs_stripe *)offset; |
220 | } |
221 | |
222 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
223 | { |
224 | return btrfs_stripe_dev_uuid(s: btrfs_stripe_nr(c, nr)); |
225 | } |
226 | |
227 | static inline u64 btrfs_stripe_offset_nr(const struct extent_buffer *eb, |
228 | struct btrfs_chunk *c, int nr) |
229 | { |
230 | return btrfs_stripe_offset(eb, s: btrfs_stripe_nr(c, nr)); |
231 | } |
232 | |
233 | static inline void btrfs_set_stripe_offset_nr(struct extent_buffer *eb, |
234 | struct btrfs_chunk *c, int nr, |
235 | u64 val) |
236 | { |
237 | btrfs_set_stripe_offset(eb, s: btrfs_stripe_nr(c, nr), val); |
238 | } |
239 | |
240 | static inline u64 btrfs_stripe_devid_nr(const struct extent_buffer *eb, |
241 | struct btrfs_chunk *c, int nr) |
242 | { |
243 | return btrfs_stripe_devid(eb, s: btrfs_stripe_nr(c, nr)); |
244 | } |
245 | |
246 | static inline void btrfs_set_stripe_devid_nr(struct extent_buffer *eb, |
247 | struct btrfs_chunk *c, int nr, |
248 | u64 val) |
249 | { |
250 | btrfs_set_stripe_devid(eb, s: btrfs_stripe_nr(c, nr), val); |
251 | } |
252 | |
253 | /* struct btrfs_block_group_item */ |
254 | BTRFS_SETGET_STACK_FUNCS(stack_block_group_used, struct btrfs_block_group_item, |
255 | used, 64); |
256 | BTRFS_SETGET_FUNCS(block_group_used, struct btrfs_block_group_item, used, 64); |
257 | BTRFS_SETGET_STACK_FUNCS(stack_block_group_chunk_objectid, |
258 | struct btrfs_block_group_item, chunk_objectid, 64); |
259 | |
260 | BTRFS_SETGET_FUNCS(block_group_chunk_objectid, |
261 | struct btrfs_block_group_item, chunk_objectid, 64); |
262 | BTRFS_SETGET_FUNCS(block_group_flags, struct btrfs_block_group_item, flags, 64); |
263 | BTRFS_SETGET_STACK_FUNCS(stack_block_group_flags, |
264 | struct btrfs_block_group_item, flags, 64); |
265 | |
266 | /* struct btrfs_free_space_info */ |
267 | BTRFS_SETGET_FUNCS(free_space_extent_count, struct btrfs_free_space_info, |
268 | extent_count, 32); |
269 | BTRFS_SETGET_FUNCS(free_space_flags, struct btrfs_free_space_info, flags, 32); |
270 | |
271 | /* struct btrfs_inode_ref */ |
272 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); |
273 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); |
274 | BTRFS_SETGET_STACK_FUNCS(stack_inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); |
275 | BTRFS_SETGET_STACK_FUNCS(stack_inode_ref_index, struct btrfs_inode_ref, index, 64); |
276 | |
277 | /* struct btrfs_inode_extref */ |
278 | BTRFS_SETGET_FUNCS(inode_extref_parent, struct btrfs_inode_extref, |
279 | parent_objectid, 64); |
280 | BTRFS_SETGET_FUNCS(inode_extref_name_len, struct btrfs_inode_extref, |
281 | name_len, 16); |
282 | BTRFS_SETGET_FUNCS(inode_extref_index, struct btrfs_inode_extref, index, 64); |
283 | |
284 | /* struct btrfs_inode_item */ |
285 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); |
286 | BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64); |
287 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); |
288 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); |
289 | BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64); |
290 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); |
291 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); |
292 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); |
293 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); |
294 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); |
295 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
296 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64); |
297 | BTRFS_SETGET_STACK_FUNCS(stack_inode_generation, struct btrfs_inode_item, |
298 | generation, 64); |
299 | BTRFS_SETGET_STACK_FUNCS(stack_inode_sequence, struct btrfs_inode_item, |
300 | sequence, 64); |
301 | BTRFS_SETGET_STACK_FUNCS(stack_inode_transid, struct btrfs_inode_item, |
302 | transid, 64); |
303 | BTRFS_SETGET_STACK_FUNCS(stack_inode_size, struct btrfs_inode_item, size, 64); |
304 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nbytes, struct btrfs_inode_item, nbytes, 64); |
305 | BTRFS_SETGET_STACK_FUNCS(stack_inode_block_group, struct btrfs_inode_item, |
306 | block_group, 64); |
307 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nlink, struct btrfs_inode_item, nlink, 32); |
308 | BTRFS_SETGET_STACK_FUNCS(stack_inode_uid, struct btrfs_inode_item, uid, 32); |
309 | BTRFS_SETGET_STACK_FUNCS(stack_inode_gid, struct btrfs_inode_item, gid, 32); |
310 | BTRFS_SETGET_STACK_FUNCS(stack_inode_mode, struct btrfs_inode_item, mode, 32); |
311 | BTRFS_SETGET_STACK_FUNCS(stack_inode_rdev, struct btrfs_inode_item, rdev, 64); |
312 | BTRFS_SETGET_STACK_FUNCS(stack_inode_flags, struct btrfs_inode_item, flags, 64); |
313 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
314 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); |
315 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_sec, struct btrfs_timespec, sec, 64); |
316 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_nsec, struct btrfs_timespec, nsec, 32); |
317 | |
318 | BTRFS_SETGET_FUNCS(stripe_extent_encoding, struct btrfs_stripe_extent, encoding, 8); |
319 | BTRFS_SETGET_FUNCS(raid_stride_devid, struct btrfs_raid_stride, devid, 64); |
320 | BTRFS_SETGET_FUNCS(raid_stride_physical, struct btrfs_raid_stride, physical, 64); |
321 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_extent_encoding, |
322 | struct btrfs_stripe_extent, encoding, 8); |
323 | BTRFS_SETGET_STACK_FUNCS(stack_raid_stride_devid, struct btrfs_raid_stride, devid, 64); |
324 | BTRFS_SETGET_STACK_FUNCS(stack_raid_stride_physical, struct btrfs_raid_stride, physical, 64); |
325 | |
326 | /* struct btrfs_dev_extent */ |
327 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, chunk_tree, 64); |
328 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, |
329 | chunk_objectid, 64); |
330 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, |
331 | chunk_offset, 64); |
332 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
333 | BTRFS_SETGET_STACK_FUNCS(stack_dev_extent_chunk_tree, struct btrfs_dev_extent, |
334 | chunk_tree, 64); |
335 | BTRFS_SETGET_STACK_FUNCS(stack_dev_extent_chunk_objectid, struct btrfs_dev_extent, |
336 | chunk_objectid, 64); |
337 | BTRFS_SETGET_STACK_FUNCS(stack_dev_extent_chunk_offset, struct btrfs_dev_extent, |
338 | chunk_offset, 64); |
339 | BTRFS_SETGET_STACK_FUNCS(stack_dev_extent_length, struct btrfs_dev_extent, length, 64); |
340 | |
341 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 64); |
342 | BTRFS_SETGET_FUNCS(extent_generation, struct btrfs_extent_item, generation, 64); |
343 | BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64); |
344 | |
345 | BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8); |
346 | |
347 | static inline void btrfs_tree_block_key(const struct extent_buffer *eb, |
348 | struct btrfs_tree_block_info *item, |
349 | struct btrfs_disk_key *key) |
350 | { |
351 | read_eb_member(eb, item, struct btrfs_tree_block_info, key, key); |
352 | } |
353 | |
354 | static inline void btrfs_set_tree_block_key(const struct extent_buffer *eb, |
355 | struct btrfs_tree_block_info *item, |
356 | struct btrfs_disk_key *key) |
357 | { |
358 | write_eb_member(eb, item, struct btrfs_tree_block_info, key, key); |
359 | } |
360 | |
361 | BTRFS_SETGET_FUNCS(extent_data_ref_root, struct btrfs_extent_data_ref, root, 64); |
362 | BTRFS_SETGET_FUNCS(extent_data_ref_objectid, struct btrfs_extent_data_ref, |
363 | objectid, 64); |
364 | BTRFS_SETGET_FUNCS(extent_data_ref_offset, struct btrfs_extent_data_ref, |
365 | offset, 64); |
366 | BTRFS_SETGET_FUNCS(extent_data_ref_count, struct btrfs_extent_data_ref, count, 32); |
367 | |
368 | BTRFS_SETGET_FUNCS(shared_data_ref_count, struct btrfs_shared_data_ref, count, 32); |
369 | |
370 | BTRFS_SETGET_FUNCS(extent_owner_ref_root_id, struct btrfs_extent_owner_ref, |
371 | root_id, 64); |
372 | |
373 | BTRFS_SETGET_FUNCS(extent_inline_ref_type, struct btrfs_extent_inline_ref, |
374 | type, 8); |
375 | BTRFS_SETGET_FUNCS(extent_inline_ref_offset, struct btrfs_extent_inline_ref, |
376 | offset, 64); |
377 | |
378 | static inline u32 btrfs_extent_inline_ref_size(int type) |
379 | { |
380 | if (type == BTRFS_TREE_BLOCK_REF_KEY || |
381 | type == BTRFS_SHARED_BLOCK_REF_KEY) |
382 | return sizeof(struct btrfs_extent_inline_ref); |
383 | if (type == BTRFS_SHARED_DATA_REF_KEY) |
384 | return sizeof(struct btrfs_shared_data_ref) + |
385 | sizeof(struct btrfs_extent_inline_ref); |
386 | if (type == BTRFS_EXTENT_DATA_REF_KEY) |
387 | return sizeof(struct btrfs_extent_data_ref) + |
388 | offsetof(struct btrfs_extent_inline_ref, offset); |
389 | if (type == BTRFS_EXTENT_OWNER_REF_KEY) |
390 | return sizeof(struct btrfs_extent_inline_ref); |
391 | return 0; |
392 | } |
393 | |
394 | /* struct btrfs_node */ |
395 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); |
396 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
397 | BTRFS_SETGET_STACK_FUNCS(stack_key_blockptr, struct btrfs_key_ptr, blockptr, 64); |
398 | BTRFS_SETGET_STACK_FUNCS(stack_key_generation, struct btrfs_key_ptr, |
399 | generation, 64); |
400 | |
401 | static inline u64 btrfs_node_blockptr(const struct extent_buffer *eb, int nr) |
402 | { |
403 | unsigned long ptr; |
404 | |
405 | ptr = offsetof(struct btrfs_node, ptrs) + |
406 | sizeof(struct btrfs_key_ptr) * nr; |
407 | return btrfs_key_blockptr(eb, s: (struct btrfs_key_ptr *)ptr); |
408 | } |
409 | |
410 | static inline void btrfs_set_node_blockptr(const struct extent_buffer *eb, |
411 | int nr, u64 val) |
412 | { |
413 | unsigned long ptr; |
414 | |
415 | ptr = offsetof(struct btrfs_node, ptrs) + |
416 | sizeof(struct btrfs_key_ptr) * nr; |
417 | btrfs_set_key_blockptr(eb, s: (struct btrfs_key_ptr *)ptr, val); |
418 | } |
419 | |
420 | static inline u64 btrfs_node_ptr_generation(const struct extent_buffer *eb, int nr) |
421 | { |
422 | unsigned long ptr; |
423 | |
424 | ptr = offsetof(struct btrfs_node, ptrs) + |
425 | sizeof(struct btrfs_key_ptr) * nr; |
426 | return btrfs_key_generation(eb, s: (struct btrfs_key_ptr *)ptr); |
427 | } |
428 | |
429 | static inline void btrfs_set_node_ptr_generation(const struct extent_buffer *eb, |
430 | int nr, u64 val) |
431 | { |
432 | unsigned long ptr; |
433 | |
434 | ptr = offsetof(struct btrfs_node, ptrs) + |
435 | sizeof(struct btrfs_key_ptr) * nr; |
436 | btrfs_set_key_generation(eb, s: (struct btrfs_key_ptr *)ptr, val); |
437 | } |
438 | |
439 | static inline unsigned long btrfs_node_key_ptr_offset(const struct extent_buffer *eb, int nr) |
440 | { |
441 | return offsetof(struct btrfs_node, ptrs) + |
442 | sizeof(struct btrfs_key_ptr) * nr; |
443 | } |
444 | |
445 | void btrfs_node_key(const struct extent_buffer *eb, |
446 | struct btrfs_disk_key *disk_key, int nr); |
447 | |
448 | static inline void btrfs_set_node_key(const struct extent_buffer *eb, |
449 | struct btrfs_disk_key *disk_key, int nr) |
450 | { |
451 | unsigned long ptr; |
452 | |
453 | ptr = btrfs_node_key_ptr_offset(eb, nr); |
454 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, |
455 | struct btrfs_key_ptr, key, disk_key); |
456 | } |
457 | |
458 | /* struct btrfs_item */ |
459 | BTRFS_SETGET_FUNCS(raw_item_offset, struct btrfs_item, offset, 32); |
460 | BTRFS_SETGET_FUNCS(raw_item_size, struct btrfs_item, size, 32); |
461 | BTRFS_SETGET_STACK_FUNCS(stack_item_offset, struct btrfs_item, offset, 32); |
462 | BTRFS_SETGET_STACK_FUNCS(stack_item_size, struct btrfs_item, size, 32); |
463 | |
464 | static inline unsigned long btrfs_item_nr_offset(const struct extent_buffer *eb, int nr) |
465 | { |
466 | return offsetof(struct btrfs_leaf, items) + |
467 | sizeof(struct btrfs_item) * nr; |
468 | } |
469 | |
470 | static inline struct btrfs_item *btrfs_item_nr(const struct extent_buffer *eb, int nr) |
471 | { |
472 | return (struct btrfs_item *)btrfs_item_nr_offset(eb, nr); |
473 | } |
474 | |
475 | #define BTRFS_ITEM_SETGET_FUNCS(member) \ |
476 | static inline u32 btrfs_item_##member(const struct extent_buffer *eb, int slot) \ |
477 | { \ |
478 | return btrfs_raw_item_##member(eb, btrfs_item_nr(eb, slot)); \ |
479 | } \ |
480 | static inline void btrfs_set_item_##member(const struct extent_buffer *eb, \ |
481 | int slot, u32 val) \ |
482 | { \ |
483 | btrfs_set_raw_item_##member(eb, btrfs_item_nr(eb, slot), val); \ |
484 | } \ |
485 | static inline u32 btrfs_token_item_##member(struct btrfs_map_token *token, \ |
486 | int slot) \ |
487 | { \ |
488 | struct btrfs_item *item = btrfs_item_nr(token->eb, slot); \ |
489 | return btrfs_token_raw_item_##member(token, item); \ |
490 | } \ |
491 | static inline void btrfs_set_token_item_##member(struct btrfs_map_token *token, \ |
492 | int slot, u32 val) \ |
493 | { \ |
494 | struct btrfs_item *item = btrfs_item_nr(token->eb, slot); \ |
495 | btrfs_set_token_raw_item_##member(token, item, val); \ |
496 | } |
497 | |
498 | BTRFS_ITEM_SETGET_FUNCS(offset) |
499 | BTRFS_ITEM_SETGET_FUNCS(size); |
500 | |
501 | static inline u32 btrfs_item_data_end(const struct extent_buffer *eb, int nr) |
502 | { |
503 | return btrfs_item_offset(eb, slot: nr) + btrfs_item_size(eb, slot: nr); |
504 | } |
505 | |
506 | static inline void btrfs_item_key(const struct extent_buffer *eb, |
507 | struct btrfs_disk_key *disk_key, int nr) |
508 | { |
509 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
510 | |
511 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); |
512 | } |
513 | |
514 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
515 | struct btrfs_disk_key *disk_key, int nr) |
516 | { |
517 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
518 | |
519 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); |
520 | } |
521 | |
522 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); |
523 | |
524 | /* struct btrfs_root_ref */ |
525 | BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64); |
526 | BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64); |
527 | BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16); |
528 | BTRFS_SETGET_STACK_FUNCS(stack_root_ref_dirid, struct btrfs_root_ref, dirid, 64); |
529 | BTRFS_SETGET_STACK_FUNCS(stack_root_ref_sequence, struct btrfs_root_ref, sequence, 64); |
530 | BTRFS_SETGET_STACK_FUNCS(stack_root_ref_name_len, struct btrfs_root_ref, name_len, 16); |
531 | |
532 | /* struct btrfs_dir_item */ |
533 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
534 | BTRFS_SETGET_FUNCS(dir_flags, struct btrfs_dir_item, type, 8); |
535 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); |
536 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); |
537 | BTRFS_SETGET_STACK_FUNCS(stack_dir_flags, struct btrfs_dir_item, type, 8); |
538 | BTRFS_SETGET_STACK_FUNCS(stack_dir_data_len, struct btrfs_dir_item, data_len, 16); |
539 | BTRFS_SETGET_STACK_FUNCS(stack_dir_name_len, struct btrfs_dir_item, name_len, 16); |
540 | BTRFS_SETGET_STACK_FUNCS(stack_dir_transid, struct btrfs_dir_item, transid, 64); |
541 | |
542 | static inline u8 btrfs_dir_ftype(const struct extent_buffer *eb, |
543 | const struct btrfs_dir_item *item) |
544 | { |
545 | return btrfs_dir_flags_to_ftype(flags: btrfs_dir_flags(eb, s: item)); |
546 | } |
547 | |
548 | static inline u8 btrfs_stack_dir_ftype(const struct btrfs_dir_item *item) |
549 | { |
550 | return btrfs_dir_flags_to_ftype(flags: btrfs_stack_dir_flags(s: item)); |
551 | } |
552 | |
553 | static inline void btrfs_dir_item_key(const struct extent_buffer *eb, |
554 | const struct btrfs_dir_item *item, |
555 | struct btrfs_disk_key *key) |
556 | { |
557 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
558 | } |
559 | |
560 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
561 | struct btrfs_dir_item *item, |
562 | const struct btrfs_disk_key *key) |
563 | { |
564 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
565 | } |
566 | |
567 | BTRFS_SETGET_FUNCS(free_space_entries, struct btrfs_free_space_header, |
568 | num_entries, 64); |
569 | BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header, |
570 | num_bitmaps, 64); |
571 | BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header, |
572 | generation, 64); |
573 | |
574 | static inline void btrfs_free_space_key(const struct extent_buffer *eb, |
575 | const struct btrfs_free_space_header *h, |
576 | struct btrfs_disk_key *key) |
577 | { |
578 | read_eb_member(eb, h, struct btrfs_free_space_header, location, key); |
579 | } |
580 | |
581 | static inline void btrfs_set_free_space_key(struct extent_buffer *eb, |
582 | struct btrfs_free_space_header *h, |
583 | const struct btrfs_disk_key *key) |
584 | { |
585 | write_eb_member(eb, h, struct btrfs_free_space_header, location, key); |
586 | } |
587 | |
588 | /* struct btrfs_disk_key */ |
589 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, objectid, 64); |
590 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); |
591 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); |
592 | |
593 | #ifdef __LITTLE_ENDIAN |
594 | |
595 | /* |
596 | * Optimized helpers for little-endian architectures where CPU and on-disk |
597 | * structures have the same endianness and we can skip conversions. |
598 | */ |
599 | |
600 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu_key, |
601 | const struct btrfs_disk_key *disk_key) |
602 | { |
603 | memcpy(cpu_key, disk_key, sizeof(struct btrfs_key)); |
604 | } |
605 | |
606 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk_key, |
607 | const struct btrfs_key *cpu_key) |
608 | { |
609 | memcpy(disk_key, cpu_key, sizeof(struct btrfs_key)); |
610 | } |
611 | |
612 | static inline void btrfs_node_key_to_cpu(const struct extent_buffer *eb, |
613 | struct btrfs_key *cpu_key, int nr) |
614 | { |
615 | struct btrfs_disk_key *disk_key = (struct btrfs_disk_key *)cpu_key; |
616 | |
617 | btrfs_node_key(eb, disk_key, nr); |
618 | } |
619 | |
620 | static inline void btrfs_item_key_to_cpu(const struct extent_buffer *eb, |
621 | struct btrfs_key *cpu_key, int nr) |
622 | { |
623 | struct btrfs_disk_key *disk_key = (struct btrfs_disk_key *)cpu_key; |
624 | |
625 | btrfs_item_key(eb, disk_key, nr); |
626 | } |
627 | |
628 | static inline void btrfs_dir_item_key_to_cpu(const struct extent_buffer *eb, |
629 | const struct btrfs_dir_item *item, |
630 | struct btrfs_key *cpu_key) |
631 | { |
632 | struct btrfs_disk_key *disk_key = (struct btrfs_disk_key *)cpu_key; |
633 | |
634 | btrfs_dir_item_key(eb, item, key: disk_key); |
635 | } |
636 | |
637 | #else |
638 | |
639 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
640 | const struct btrfs_disk_key *disk) |
641 | { |
642 | cpu->offset = le64_to_cpu(disk->offset); |
643 | cpu->type = disk->type; |
644 | cpu->objectid = le64_to_cpu(disk->objectid); |
645 | } |
646 | |
647 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, |
648 | const struct btrfs_key *cpu) |
649 | { |
650 | disk->offset = cpu_to_le64(cpu->offset); |
651 | disk->type = cpu->type; |
652 | disk->objectid = cpu_to_le64(cpu->objectid); |
653 | } |
654 | |
655 | static inline void btrfs_node_key_to_cpu(const struct extent_buffer *eb, |
656 | struct btrfs_key *key, int nr) |
657 | { |
658 | struct btrfs_disk_key disk_key; |
659 | |
660 | btrfs_node_key(eb, &disk_key, nr); |
661 | btrfs_disk_key_to_cpu(key, &disk_key); |
662 | } |
663 | |
664 | static inline void btrfs_item_key_to_cpu(const struct extent_buffer *eb, |
665 | struct btrfs_key *key, int nr) |
666 | { |
667 | struct btrfs_disk_key disk_key; |
668 | |
669 | btrfs_item_key(eb, &disk_key, nr); |
670 | btrfs_disk_key_to_cpu(key, &disk_key); |
671 | } |
672 | |
673 | static inline void btrfs_dir_item_key_to_cpu(const struct extent_buffer *eb, |
674 | const struct btrfs_dir_item *item, |
675 | struct btrfs_key *key) |
676 | { |
677 | struct btrfs_disk_key disk_key; |
678 | |
679 | btrfs_dir_item_key(eb, item, &disk_key); |
680 | btrfs_disk_key_to_cpu(key, &disk_key); |
681 | } |
682 | |
683 | #endif |
684 | |
685 | /* struct btrfs_header */ |
686 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
687 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, generation, 64); |
688 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); |
689 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); |
690 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
691 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
692 | BTRFS_SETGET_STACK_FUNCS(stack_header_generation, struct btrfs_header, |
693 | generation, 64); |
694 | BTRFS_SETGET_STACK_FUNCS(stack_header_owner, struct btrfs_header, owner, 64); |
695 | BTRFS_SETGET_STACK_FUNCS(stack_header_nritems, struct btrfs_header, nritems, 32); |
696 | BTRFS_SETGET_STACK_FUNCS(stack_header_bytenr, struct btrfs_header, bytenr, 64); |
697 | |
698 | static inline int (const struct extent_buffer *eb, u64 flag) |
699 | { |
700 | return (btrfs_header_flags(eb) & flag) == flag; |
701 | } |
702 | |
703 | static inline void (struct extent_buffer *eb, u64 flag) |
704 | { |
705 | u64 flags = btrfs_header_flags(eb); |
706 | |
707 | btrfs_set_header_flags(eb, val: flags | flag); |
708 | } |
709 | |
710 | static inline void (struct extent_buffer *eb, u64 flag) |
711 | { |
712 | u64 flags = btrfs_header_flags(eb); |
713 | |
714 | btrfs_set_header_flags(eb, val: flags & ~flag); |
715 | } |
716 | |
717 | static inline int (const struct extent_buffer *eb) |
718 | { |
719 | u64 flags = btrfs_header_flags(eb); |
720 | |
721 | return flags >> BTRFS_BACKREF_REV_SHIFT; |
722 | } |
723 | |
724 | static inline void (struct extent_buffer *eb, int rev) |
725 | { |
726 | u64 flags = btrfs_header_flags(eb); |
727 | |
728 | flags &= ~BTRFS_BACKREF_REV_MASK; |
729 | flags |= (u64)rev << BTRFS_BACKREF_REV_SHIFT; |
730 | btrfs_set_header_flags(eb, val: flags); |
731 | } |
732 | |
733 | static inline int btrfs_is_leaf(const struct extent_buffer *eb) |
734 | { |
735 | return btrfs_header_level(eb) == 0; |
736 | } |
737 | |
738 | /* struct btrfs_root_item */ |
739 | BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, generation, 64); |
740 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); |
741 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
742 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); |
743 | |
744 | BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, generation, 64); |
745 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
746 | BTRFS_SETGET_STACK_FUNCS(root_drop_level, struct btrfs_root_item, drop_level, 8); |
747 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); |
748 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
749 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); |
750 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64); |
751 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
752 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); |
753 | BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item, |
754 | last_snapshot, 64); |
755 | BTRFS_SETGET_STACK_FUNCS(root_generation_v2, struct btrfs_root_item, |
756 | generation_v2, 64); |
757 | BTRFS_SETGET_STACK_FUNCS(root_ctransid, struct btrfs_root_item, ctransid, 64); |
758 | BTRFS_SETGET_STACK_FUNCS(root_otransid, struct btrfs_root_item, otransid, 64); |
759 | BTRFS_SETGET_STACK_FUNCS(root_stransid, struct btrfs_root_item, stransid, 64); |
760 | BTRFS_SETGET_STACK_FUNCS(root_rtransid, struct btrfs_root_item, rtransid, 64); |
761 | |
762 | /* struct btrfs_root_backup */ |
763 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root, struct btrfs_root_backup, |
764 | tree_root, 64); |
765 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_gen, struct btrfs_root_backup, |
766 | tree_root_gen, 64); |
767 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_level, struct btrfs_root_backup, |
768 | tree_root_level, 8); |
769 | |
770 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root, struct btrfs_root_backup, |
771 | chunk_root, 64); |
772 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_gen, struct btrfs_root_backup, |
773 | chunk_root_gen, 64); |
774 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_level, struct btrfs_root_backup, |
775 | chunk_root_level, 8); |
776 | |
777 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root, struct btrfs_root_backup, |
778 | extent_root, 64); |
779 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_gen, struct btrfs_root_backup, |
780 | extent_root_gen, 64); |
781 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_level, struct btrfs_root_backup, |
782 | extent_root_level, 8); |
783 | |
784 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root, struct btrfs_root_backup, |
785 | fs_root, 64); |
786 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_gen, struct btrfs_root_backup, |
787 | fs_root_gen, 64); |
788 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_level, struct btrfs_root_backup, |
789 | fs_root_level, 8); |
790 | |
791 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root, struct btrfs_root_backup, |
792 | dev_root, 64); |
793 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_gen, struct btrfs_root_backup, |
794 | dev_root_gen, 64); |
795 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_level, struct btrfs_root_backup, |
796 | dev_root_level, 8); |
797 | |
798 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root, struct btrfs_root_backup, |
799 | csum_root, 64); |
800 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_gen, struct btrfs_root_backup, |
801 | csum_root_gen, 64); |
802 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_level, struct btrfs_root_backup, |
803 | csum_root_level, 8); |
804 | BTRFS_SETGET_STACK_FUNCS(backup_total_bytes, struct btrfs_root_backup, |
805 | total_bytes, 64); |
806 | BTRFS_SETGET_STACK_FUNCS(backup_bytes_used, struct btrfs_root_backup, |
807 | bytes_used, 64); |
808 | BTRFS_SETGET_STACK_FUNCS(backup_num_devices, struct btrfs_root_backup, |
809 | num_devices, 64); |
810 | |
811 | /* struct btrfs_balance_item */ |
812 | BTRFS_SETGET_FUNCS(balance_flags, struct btrfs_balance_item, flags, 64); |
813 | |
814 | static inline void btrfs_balance_data(const struct extent_buffer *eb, |
815 | const struct btrfs_balance_item *bi, |
816 | struct btrfs_disk_balance_args *ba) |
817 | { |
818 | read_eb_member(eb, bi, struct btrfs_balance_item, data, ba); |
819 | } |
820 | |
821 | static inline void btrfs_set_balance_data(struct extent_buffer *eb, |
822 | struct btrfs_balance_item *bi, |
823 | const struct btrfs_disk_balance_args *ba) |
824 | { |
825 | write_eb_member(eb, bi, struct btrfs_balance_item, data, ba); |
826 | } |
827 | |
828 | static inline void btrfs_balance_meta(const struct extent_buffer *eb, |
829 | const struct btrfs_balance_item *bi, |
830 | struct btrfs_disk_balance_args *ba) |
831 | { |
832 | read_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); |
833 | } |
834 | |
835 | static inline void btrfs_set_balance_meta(struct extent_buffer *eb, |
836 | struct btrfs_balance_item *bi, |
837 | const struct btrfs_disk_balance_args *ba) |
838 | { |
839 | write_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); |
840 | } |
841 | |
842 | static inline void btrfs_balance_sys(const struct extent_buffer *eb, |
843 | const struct btrfs_balance_item *bi, |
844 | struct btrfs_disk_balance_args *ba) |
845 | { |
846 | read_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); |
847 | } |
848 | |
849 | static inline void btrfs_set_balance_sys(struct extent_buffer *eb, |
850 | struct btrfs_balance_item *bi, |
851 | const struct btrfs_disk_balance_args *ba) |
852 | { |
853 | write_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); |
854 | } |
855 | |
856 | /* struct btrfs_super_block */ |
857 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
858 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
859 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
860 | generation, 64); |
861 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); |
862 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
863 | struct btrfs_super_block, sys_chunk_array_size, 32); |
864 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation, |
865 | struct btrfs_super_block, chunk_root_generation, 64); |
866 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
867 | root_level, 8); |
868 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
869 | chunk_root, 64); |
870 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, |
871 | chunk_root_level, 8); |
872 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, log_root, 64); |
873 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, |
874 | log_root_level, 8); |
875 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
876 | total_bytes, 64); |
877 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, |
878 | bytes_used, 64); |
879 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
880 | sectorsize, 32); |
881 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, |
882 | nodesize, 32); |
883 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
884 | stripesize, 32); |
885 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
886 | root_dir_objectid, 64); |
887 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
888 | num_devices, 64); |
889 | BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block, |
890 | compat_flags, 64); |
891 | BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block, |
892 | compat_ro_flags, 64); |
893 | BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block, |
894 | incompat_flags, 64); |
895 | BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block, |
896 | csum_type, 16); |
897 | BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block, |
898 | cache_generation, 64); |
899 | BTRFS_SETGET_STACK_FUNCS(super_magic, struct btrfs_super_block, magic, 64); |
900 | BTRFS_SETGET_STACK_FUNCS(super_uuid_tree_generation, struct btrfs_super_block, |
901 | uuid_tree_generation, 64); |
902 | BTRFS_SETGET_STACK_FUNCS(super_nr_global_roots, struct btrfs_super_block, |
903 | nr_global_roots, 64); |
904 | |
905 | /* struct btrfs_file_extent_item */ |
906 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_type, struct btrfs_file_extent_item, |
907 | type, 8); |
908 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_bytenr, |
909 | struct btrfs_file_extent_item, disk_bytenr, 64); |
910 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_offset, |
911 | struct btrfs_file_extent_item, offset, 64); |
912 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_generation, |
913 | struct btrfs_file_extent_item, generation, 64); |
914 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_num_bytes, |
915 | struct btrfs_file_extent_item, num_bytes, 64); |
916 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_ram_bytes, |
917 | struct btrfs_file_extent_item, ram_bytes, 64); |
918 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_num_bytes, |
919 | struct btrfs_file_extent_item, disk_num_bytes, 64); |
920 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_compression, |
921 | struct btrfs_file_extent_item, compression, 8); |
922 | |
923 | |
924 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); |
925 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
926 | disk_bytenr, 64); |
927 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
928 | generation, 64); |
929 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
930 | disk_num_bytes, 64); |
931 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
932 | offset, 64); |
933 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
934 | num_bytes, 64); |
935 | BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, |
936 | ram_bytes, 64); |
937 | BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, |
938 | compression, 8); |
939 | BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, |
940 | encryption, 8); |
941 | BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, |
942 | other_encoding, 16); |
943 | |
944 | /* btrfs_qgroup_status_item */ |
945 | BTRFS_SETGET_FUNCS(qgroup_status_generation, struct btrfs_qgroup_status_item, |
946 | generation, 64); |
947 | BTRFS_SETGET_FUNCS(qgroup_status_version, struct btrfs_qgroup_status_item, |
948 | version, 64); |
949 | BTRFS_SETGET_FUNCS(qgroup_status_flags, struct btrfs_qgroup_status_item, |
950 | flags, 64); |
951 | BTRFS_SETGET_FUNCS(qgroup_status_rescan, struct btrfs_qgroup_status_item, |
952 | rescan, 64); |
953 | BTRFS_SETGET_FUNCS(qgroup_status_enable_gen, struct btrfs_qgroup_status_item, |
954 | enable_gen, 64); |
955 | |
956 | /* btrfs_qgroup_info_item */ |
957 | BTRFS_SETGET_FUNCS(qgroup_info_generation, struct btrfs_qgroup_info_item, |
958 | generation, 64); |
959 | BTRFS_SETGET_FUNCS(qgroup_info_rfer, struct btrfs_qgroup_info_item, rfer, 64); |
960 | BTRFS_SETGET_FUNCS(qgroup_info_rfer_cmpr, struct btrfs_qgroup_info_item, |
961 | rfer_cmpr, 64); |
962 | BTRFS_SETGET_FUNCS(qgroup_info_excl, struct btrfs_qgroup_info_item, excl, 64); |
963 | BTRFS_SETGET_FUNCS(qgroup_info_excl_cmpr, struct btrfs_qgroup_info_item, |
964 | excl_cmpr, 64); |
965 | |
966 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_generation, |
967 | struct btrfs_qgroup_info_item, generation, 64); |
968 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer, struct btrfs_qgroup_info_item, |
969 | rfer, 64); |
970 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer_cmpr, |
971 | struct btrfs_qgroup_info_item, rfer_cmpr, 64); |
972 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl, struct btrfs_qgroup_info_item, |
973 | excl, 64); |
974 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl_cmpr, |
975 | struct btrfs_qgroup_info_item, excl_cmpr, 64); |
976 | |
977 | /* btrfs_qgroup_limit_item */ |
978 | BTRFS_SETGET_FUNCS(qgroup_limit_flags, struct btrfs_qgroup_limit_item, flags, 64); |
979 | BTRFS_SETGET_FUNCS(qgroup_limit_max_rfer, struct btrfs_qgroup_limit_item, |
980 | max_rfer, 64); |
981 | BTRFS_SETGET_FUNCS(qgroup_limit_max_excl, struct btrfs_qgroup_limit_item, |
982 | max_excl, 64); |
983 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_rfer, struct btrfs_qgroup_limit_item, |
984 | rsv_rfer, 64); |
985 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_excl, struct btrfs_qgroup_limit_item, |
986 | rsv_excl, 64); |
987 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_flags, |
988 | struct btrfs_qgroup_limit_item, flags, 64); |
989 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_max_rfer, |
990 | struct btrfs_qgroup_limit_item, max_rfer, 64); |
991 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_max_excl, |
992 | struct btrfs_qgroup_limit_item, max_excl, 64); |
993 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_rsv_rfer, |
994 | struct btrfs_qgroup_limit_item, rsv_rfer, 64); |
995 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_rsv_excl, |
996 | struct btrfs_qgroup_limit_item, rsv_excl, 64); |
997 | |
998 | /* btrfs_dev_replace_item */ |
999 | BTRFS_SETGET_FUNCS(dev_replace_src_devid, |
1000 | struct btrfs_dev_replace_item, src_devid, 64); |
1001 | BTRFS_SETGET_FUNCS(dev_replace_cont_reading_from_srcdev_mode, |
1002 | struct btrfs_dev_replace_item, cont_reading_from_srcdev_mode, |
1003 | 64); |
1004 | BTRFS_SETGET_FUNCS(dev_replace_replace_state, struct btrfs_dev_replace_item, |
1005 | replace_state, 64); |
1006 | BTRFS_SETGET_FUNCS(dev_replace_time_started, struct btrfs_dev_replace_item, |
1007 | time_started, 64); |
1008 | BTRFS_SETGET_FUNCS(dev_replace_time_stopped, struct btrfs_dev_replace_item, |
1009 | time_stopped, 64); |
1010 | BTRFS_SETGET_FUNCS(dev_replace_num_write_errors, struct btrfs_dev_replace_item, |
1011 | num_write_errors, 64); |
1012 | BTRFS_SETGET_FUNCS(dev_replace_num_uncorrectable_read_errors, |
1013 | struct btrfs_dev_replace_item, num_uncorrectable_read_errors, |
1014 | 64); |
1015 | BTRFS_SETGET_FUNCS(dev_replace_cursor_left, struct btrfs_dev_replace_item, |
1016 | cursor_left, 64); |
1017 | BTRFS_SETGET_FUNCS(dev_replace_cursor_right, struct btrfs_dev_replace_item, |
1018 | cursor_right, 64); |
1019 | |
1020 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_src_devid, |
1021 | struct btrfs_dev_replace_item, src_devid, 64); |
1022 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cont_reading_from_srcdev_mode, |
1023 | struct btrfs_dev_replace_item, |
1024 | cont_reading_from_srcdev_mode, 64); |
1025 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_replace_state, |
1026 | struct btrfs_dev_replace_item, replace_state, 64); |
1027 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_started, |
1028 | struct btrfs_dev_replace_item, time_started, 64); |
1029 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_stopped, |
1030 | struct btrfs_dev_replace_item, time_stopped, 64); |
1031 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_write_errors, |
1032 | struct btrfs_dev_replace_item, num_write_errors, 64); |
1033 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_uncorrectable_read_errors, |
1034 | struct btrfs_dev_replace_item, |
1035 | num_uncorrectable_read_errors, 64); |
1036 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_left, |
1037 | struct btrfs_dev_replace_item, cursor_left, 64); |
1038 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_right, |
1039 | struct btrfs_dev_replace_item, cursor_right, 64); |
1040 | |
1041 | /* btrfs_verity_descriptor_item */ |
1042 | BTRFS_SETGET_FUNCS(verity_descriptor_encryption, struct btrfs_verity_descriptor_item, |
1043 | encryption, 8); |
1044 | BTRFS_SETGET_FUNCS(verity_descriptor_size, struct btrfs_verity_descriptor_item, |
1045 | size, 64); |
1046 | BTRFS_SETGET_STACK_FUNCS(stack_verity_descriptor_encryption, |
1047 | struct btrfs_verity_descriptor_item, encryption, 8); |
1048 | BTRFS_SETGET_STACK_FUNCS(stack_verity_descriptor_size, |
1049 | struct btrfs_verity_descriptor_item, size, 64); |
1050 | |
1051 | /* Cast into the data area of the leaf. */ |
1052 | #define btrfs_item_ptr(leaf, slot, type) \ |
1053 | ((type *)(btrfs_item_nr_offset(leaf, 0) + btrfs_item_offset(leaf, slot))) |
1054 | |
1055 | #define btrfs_item_ptr_offset(leaf, slot) \ |
1056 | ((unsigned long)(btrfs_item_nr_offset(leaf, 0) + btrfs_item_offset(leaf, slot))) |
1057 | |
1058 | #endif |
1059 | |