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ad1ac501 JB |
1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | ||
3 | #ifndef BTRFS_ACCESSORS_H | |
4 | #define BTRFS_ACCESSORS_H | |
5 | ||
98efb4eb | 6 | #include <linux/stddef.h> |
f005d997 | 7 | #include <asm/unaligned.h> |
98efb4eb | 8 | |
ad1ac501 JB |
9 | struct btrfs_map_token { |
10 | struct extent_buffer *eb; | |
11 | char *kaddr; | |
12 | unsigned long offset; | |
13 | }; | |
14 | ||
15 | void btrfs_init_map_token(struct btrfs_map_token *token, struct extent_buffer *eb); | |
16 | ||
07e81dc9 JB |
17 | /* |
18 | * Some macros to generate set/get functions for the struct fields. This | |
19 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple one | |
20 | * for u8: | |
21 | */ | |
22 | #define le8_to_cpu(v) (v) | |
23 | #define cpu_to_le8(v) (v) | |
24 | #define __le8 u8 | |
25 | ||
26 | static inline u8 get_unaligned_le8(const void *p) | |
27 | { | |
28 | return *(u8 *)p; | |
29 | } | |
30 | ||
31 | static inline void put_unaligned_le8(u8 val, void *p) | |
32 | { | |
33 | *(u8 *)p = val; | |
34 | } | |
35 | ||
36 | #define read_eb_member(eb, ptr, type, member, result) (\ | |
37 | read_extent_buffer(eb, (char *)(result), \ | |
38 | ((unsigned long)(ptr)) + \ | |
39 | offsetof(type, member), \ | |
98efb4eb | 40 | sizeof_field(type, member))) |
07e81dc9 JB |
41 | |
42 | #define write_eb_member(eb, ptr, type, member, result) (\ | |
43 | write_extent_buffer(eb, (char *)(result), \ | |
44 | ((unsigned long)(ptr)) + \ | |
45 | offsetof(type, member), \ | |
98efb4eb | 46 | sizeof_field(type, member))) |
07e81dc9 JB |
47 | |
48 | #define DECLARE_BTRFS_SETGET_BITS(bits) \ | |
49 | u##bits btrfs_get_token_##bits(struct btrfs_map_token *token, \ | |
50 | const void *ptr, unsigned long off); \ | |
51 | void btrfs_set_token_##bits(struct btrfs_map_token *token, \ | |
52 | const void *ptr, unsigned long off, \ | |
53 | u##bits val); \ | |
54 | u##bits btrfs_get_##bits(const struct extent_buffer *eb, \ | |
55 | const void *ptr, unsigned long off); \ | |
56 | void btrfs_set_##bits(const struct extent_buffer *eb, void *ptr, \ | |
57 | unsigned long off, u##bits val); | |
58 | ||
59 | DECLARE_BTRFS_SETGET_BITS(8) | |
60 | DECLARE_BTRFS_SETGET_BITS(16) | |
61 | DECLARE_BTRFS_SETGET_BITS(32) | |
62 | DECLARE_BTRFS_SETGET_BITS(64) | |
63 | ||
64 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ | |
65 | static inline u##bits btrfs_##name(const struct extent_buffer *eb, \ | |
66 | const type *s) \ | |
67 | { \ | |
98efb4eb | 68 | static_assert(sizeof(u##bits) == sizeof_field(type, member)); \ |
07e81dc9 JB |
69 | return btrfs_get_##bits(eb, s, offsetof(type, member)); \ |
70 | } \ | |
71 | static inline void btrfs_set_##name(const struct extent_buffer *eb, type *s, \ | |
72 | u##bits val) \ | |
73 | { \ | |
98efb4eb | 74 | static_assert(sizeof(u##bits) == sizeof_field(type, member)); \ |
07e81dc9 JB |
75 | btrfs_set_##bits(eb, s, offsetof(type, member), val); \ |
76 | } \ | |
77 | static inline u##bits btrfs_token_##name(struct btrfs_map_token *token, \ | |
78 | const type *s) \ | |
79 | { \ | |
98efb4eb | 80 | static_assert(sizeof(u##bits) == sizeof_field(type, member)); \ |
07e81dc9 JB |
81 | return btrfs_get_token_##bits(token, s, offsetof(type, member));\ |
82 | } \ | |
83 | static inline void btrfs_set_token_##name(struct btrfs_map_token *token,\ | |
84 | type *s, u##bits val) \ | |
85 | { \ | |
98efb4eb | 86 | static_assert(sizeof(u##bits) == sizeof_field(type, member)); \ |
07e81dc9 JB |
87 | btrfs_set_token_##bits(token, s, offsetof(type, member), val); \ |
88 | } | |
89 | ||
90 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ | |
91 | static inline u##bits btrfs_##name(const struct extent_buffer *eb) \ | |
92 | { \ | |
082d5bb9 | 93 | const type *p = folio_address(eb->folios[0]) + \ |
07e81dc9 JB |
94 | offset_in_page(eb->start); \ |
95 | return get_unaligned_le##bits(&p->member); \ | |
96 | } \ | |
97 | static inline void btrfs_set_##name(const struct extent_buffer *eb, \ | |
98 | u##bits val) \ | |
99 | { \ | |
082d5bb9 | 100 | type *p = folio_address(eb->folios[0]) + offset_in_page(eb->start); \ |
07e81dc9 JB |
101 | put_unaligned_le##bits(val, &p->member); \ |
102 | } | |
103 | ||
104 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ | |
105 | static inline u##bits btrfs_##name(const type *s) \ | |
106 | { \ | |
107 | return get_unaligned_le##bits(&s->member); \ | |
108 | } \ | |
109 | static inline void btrfs_set_##name(type *s, u##bits val) \ | |
110 | { \ | |
111 | put_unaligned_le##bits(val, &s->member); \ | |
112 | } | |
113 | ||
114 | static inline u64 btrfs_device_total_bytes(const struct extent_buffer *eb, | |
115 | struct btrfs_dev_item *s) | |
116 | { | |
98efb4eb DS |
117 | static_assert(sizeof(u64) == sizeof_field(struct btrfs_dev_item, total_bytes)); |
118 | return btrfs_get_64(eb, s, offsetof(struct btrfs_dev_item, total_bytes)); | |
07e81dc9 JB |
119 | } |
120 | static inline void btrfs_set_device_total_bytes(const struct extent_buffer *eb, | |
121 | struct btrfs_dev_item *s, | |
122 | u64 val) | |
123 | { | |
98efb4eb | 124 | static_assert(sizeof(u64) == sizeof_field(struct btrfs_dev_item, total_bytes)); |
07e81dc9 JB |
125 | WARN_ON(!IS_ALIGNED(val, eb->fs_info->sectorsize)); |
126 | btrfs_set_64(eb, s, offsetof(struct btrfs_dev_item, total_bytes), val); | |
127 | } | |
128 | ||
129 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); | |
130 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); | |
131 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); | |
132 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); | |
133 | BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item, start_offset, 64); | |
134 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); | |
135 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); | |
136 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); | |
137 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); | |
138 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); | |
139 | BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64); | |
140 | ||
141 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); | |
142 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, | |
143 | total_bytes, 64); | |
144 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, | |
145 | bytes_used, 64); | |
146 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, | |
147 | io_align, 32); | |
148 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, | |
149 | io_width, 32); | |
150 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, | |
151 | sector_size, 32); | |
152 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); | |
153 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, dev_group, 32); | |
154 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, | |
155 | seek_speed, 8); | |
156 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, | |
157 | bandwidth, 8); | |
158 | BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item, | |
159 | generation, 64); | |
160 | ||
161 | static inline unsigned long btrfs_device_uuid(struct btrfs_dev_item *d) | |
162 | { | |
163 | return (unsigned long)d + offsetof(struct btrfs_dev_item, uuid); | |
164 | } | |
165 | ||
166 | static inline unsigned long btrfs_device_fsid(struct btrfs_dev_item *d) | |
167 | { | |
168 | return (unsigned long)d + offsetof(struct btrfs_dev_item, fsid); | |
169 | } | |
170 | ||
171 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); | |
172 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); | |
173 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); | |
174 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); | |
175 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); | |
176 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); | |
177 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); | |
178 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); | |
179 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); | |
180 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); | |
181 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); | |
182 | ||
183 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) | |
184 | { | |
185 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); | |
186 | } | |
187 | ||
188 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); | |
189 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); | |
190 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, | |
191 | stripe_len, 64); | |
192 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, io_align, 32); | |
193 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, io_width, 32); | |
194 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, | |
195 | sector_size, 32); | |
196 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); | |
197 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, | |
198 | num_stripes, 16); | |
199 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, | |
200 | sub_stripes, 16); | |
201 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); | |
202 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); | |
203 | ||
204 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, int nr) | |
205 | { | |
206 | unsigned long offset = (unsigned long)c; | |
207 | ||
208 | offset += offsetof(struct btrfs_chunk, stripe); | |
209 | offset += nr * sizeof(struct btrfs_stripe); | |
210 | return (struct btrfs_stripe *)offset; | |
211 | } | |
212 | ||
213 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) | |
214 | { | |
215 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); | |
216 | } | |
217 | ||
218 | static inline u64 btrfs_stripe_offset_nr(const struct extent_buffer *eb, | |
219 | struct btrfs_chunk *c, int nr) | |
220 | { | |
221 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); | |
222 | } | |
223 | ||
054056bd JB |
224 | static inline void btrfs_set_stripe_offset_nr(struct extent_buffer *eb, |
225 | struct btrfs_chunk *c, int nr, | |
226 | u64 val) | |
227 | { | |
228 | btrfs_set_stripe_offset(eb, btrfs_stripe_nr(c, nr), val); | |
229 | } | |
230 | ||
07e81dc9 JB |
231 | static inline u64 btrfs_stripe_devid_nr(const struct extent_buffer *eb, |
232 | struct btrfs_chunk *c, int nr) | |
233 | { | |
234 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); | |
235 | } | |
236 | ||
054056bd JB |
237 | static inline void btrfs_set_stripe_devid_nr(struct extent_buffer *eb, |
238 | struct btrfs_chunk *c, int nr, | |
239 | u64 val) | |
240 | { | |
241 | btrfs_set_stripe_devid(eb, btrfs_stripe_nr(c, nr), val); | |
242 | } | |
243 | ||
07e81dc9 JB |
244 | /* struct btrfs_block_group_item */ |
245 | BTRFS_SETGET_STACK_FUNCS(stack_block_group_used, struct btrfs_block_group_item, | |
246 | used, 64); | |
247 | BTRFS_SETGET_FUNCS(block_group_used, struct btrfs_block_group_item, used, 64); | |
248 | BTRFS_SETGET_STACK_FUNCS(stack_block_group_chunk_objectid, | |
249 | struct btrfs_block_group_item, chunk_objectid, 64); | |
250 | ||
251 | BTRFS_SETGET_FUNCS(block_group_chunk_objectid, | |
252 | struct btrfs_block_group_item, chunk_objectid, 64); | |
253 | BTRFS_SETGET_FUNCS(block_group_flags, struct btrfs_block_group_item, flags, 64); | |
254 | BTRFS_SETGET_STACK_FUNCS(stack_block_group_flags, | |
255 | struct btrfs_block_group_item, flags, 64); | |
256 | ||
257 | /* struct btrfs_free_space_info */ | |
258 | BTRFS_SETGET_FUNCS(free_space_extent_count, struct btrfs_free_space_info, | |
259 | extent_count, 32); | |
260 | BTRFS_SETGET_FUNCS(free_space_flags, struct btrfs_free_space_info, flags, 32); | |
261 | ||
262 | /* struct btrfs_inode_ref */ | |
263 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); | |
264 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); | |
054056bd JB |
265 | BTRFS_SETGET_STACK_FUNCS(stack_inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); |
266 | BTRFS_SETGET_STACK_FUNCS(stack_inode_ref_index, struct btrfs_inode_ref, index, 64); | |
07e81dc9 JB |
267 | |
268 | /* struct btrfs_inode_extref */ | |
269 | BTRFS_SETGET_FUNCS(inode_extref_parent, struct btrfs_inode_extref, | |
270 | parent_objectid, 64); | |
271 | BTRFS_SETGET_FUNCS(inode_extref_name_len, struct btrfs_inode_extref, | |
272 | name_len, 16); | |
273 | BTRFS_SETGET_FUNCS(inode_extref_index, struct btrfs_inode_extref, index, 64); | |
274 | ||
275 | /* struct btrfs_inode_item */ | |
276 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); | |
277 | BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64); | |
278 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); | |
279 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); | |
280 | BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64); | |
281 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); | |
282 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); | |
283 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); | |
284 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); | |
285 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); | |
286 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); | |
287 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64); | |
288 | BTRFS_SETGET_STACK_FUNCS(stack_inode_generation, struct btrfs_inode_item, | |
289 | generation, 64); | |
290 | BTRFS_SETGET_STACK_FUNCS(stack_inode_sequence, struct btrfs_inode_item, | |
291 | sequence, 64); | |
292 | BTRFS_SETGET_STACK_FUNCS(stack_inode_transid, struct btrfs_inode_item, | |
293 | transid, 64); | |
294 | BTRFS_SETGET_STACK_FUNCS(stack_inode_size, struct btrfs_inode_item, size, 64); | |
295 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nbytes, struct btrfs_inode_item, nbytes, 64); | |
296 | BTRFS_SETGET_STACK_FUNCS(stack_inode_block_group, struct btrfs_inode_item, | |
297 | block_group, 64); | |
298 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nlink, struct btrfs_inode_item, nlink, 32); | |
299 | BTRFS_SETGET_STACK_FUNCS(stack_inode_uid, struct btrfs_inode_item, uid, 32); | |
300 | BTRFS_SETGET_STACK_FUNCS(stack_inode_gid, struct btrfs_inode_item, gid, 32); | |
301 | BTRFS_SETGET_STACK_FUNCS(stack_inode_mode, struct btrfs_inode_item, mode, 32); | |
302 | BTRFS_SETGET_STACK_FUNCS(stack_inode_rdev, struct btrfs_inode_item, rdev, 64); | |
303 | BTRFS_SETGET_STACK_FUNCS(stack_inode_flags, struct btrfs_inode_item, flags, 64); | |
304 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); | |
305 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); | |
306 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_sec, struct btrfs_timespec, sec, 64); | |
307 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_nsec, struct btrfs_timespec, nsec, 32); | |
308 | ||
ee129330 JT |
309 | BTRFS_SETGET_FUNCS(stripe_extent_encoding, struct btrfs_stripe_extent, encoding, 8); |
310 | BTRFS_SETGET_FUNCS(raid_stride_devid, struct btrfs_raid_stride, devid, 64); | |
311 | BTRFS_SETGET_FUNCS(raid_stride_physical, struct btrfs_raid_stride, physical, 64); | |
312 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_extent_encoding, | |
313 | struct btrfs_stripe_extent, encoding, 8); | |
314 | BTRFS_SETGET_STACK_FUNCS(stack_raid_stride_devid, struct btrfs_raid_stride, devid, 64); | |
315 | BTRFS_SETGET_STACK_FUNCS(stack_raid_stride_physical, struct btrfs_raid_stride, physical, 64); | |
316 | ||
07e81dc9 JB |
317 | /* struct btrfs_dev_extent */ |
318 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, chunk_tree, 64); | |
319 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, | |
320 | chunk_objectid, 64); | |
321 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, | |
322 | chunk_offset, 64); | |
323 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); | |
054056bd JB |
324 | BTRFS_SETGET_STACK_FUNCS(stack_dev_extent_chunk_tree, struct btrfs_dev_extent, |
325 | chunk_tree, 64); | |
326 | BTRFS_SETGET_STACK_FUNCS(stack_dev_extent_chunk_objectid, struct btrfs_dev_extent, | |
327 | chunk_objectid, 64); | |
328 | BTRFS_SETGET_STACK_FUNCS(stack_dev_extent_chunk_offset, struct btrfs_dev_extent, | |
329 | chunk_offset, 64); | |
330 | BTRFS_SETGET_STACK_FUNCS(stack_dev_extent_length, struct btrfs_dev_extent, length, 64); | |
331 | ||
07e81dc9 JB |
332 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 64); |
333 | BTRFS_SETGET_FUNCS(extent_generation, struct btrfs_extent_item, generation, 64); | |
334 | BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64); | |
335 | ||
336 | BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8); | |
337 | ||
338 | static inline void btrfs_tree_block_key(const struct extent_buffer *eb, | |
339 | struct btrfs_tree_block_info *item, | |
340 | struct btrfs_disk_key *key) | |
341 | { | |
342 | read_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
343 | } | |
344 | ||
345 | static inline void btrfs_set_tree_block_key(const struct extent_buffer *eb, | |
346 | struct btrfs_tree_block_info *item, | |
347 | struct btrfs_disk_key *key) | |
348 | { | |
349 | write_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
350 | } | |
351 | ||
352 | BTRFS_SETGET_FUNCS(extent_data_ref_root, struct btrfs_extent_data_ref, root, 64); | |
353 | BTRFS_SETGET_FUNCS(extent_data_ref_objectid, struct btrfs_extent_data_ref, | |
354 | objectid, 64); | |
355 | BTRFS_SETGET_FUNCS(extent_data_ref_offset, struct btrfs_extent_data_ref, | |
356 | offset, 64); | |
357 | BTRFS_SETGET_FUNCS(extent_data_ref_count, struct btrfs_extent_data_ref, count, 32); | |
358 | ||
359 | BTRFS_SETGET_FUNCS(shared_data_ref_count, struct btrfs_shared_data_ref, count, 32); | |
360 | ||
d9a620f7 BB |
361 | BTRFS_SETGET_FUNCS(extent_owner_ref_root_id, struct btrfs_extent_owner_ref, |
362 | root_id, 64); | |
363 | ||
07e81dc9 JB |
364 | BTRFS_SETGET_FUNCS(extent_inline_ref_type, struct btrfs_extent_inline_ref, |
365 | type, 8); | |
366 | BTRFS_SETGET_FUNCS(extent_inline_ref_offset, struct btrfs_extent_inline_ref, | |
367 | offset, 64); | |
368 | ||
369 | static inline u32 btrfs_extent_inline_ref_size(int type) | |
370 | { | |
371 | if (type == BTRFS_TREE_BLOCK_REF_KEY || | |
372 | type == BTRFS_SHARED_BLOCK_REF_KEY) | |
373 | return sizeof(struct btrfs_extent_inline_ref); | |
374 | if (type == BTRFS_SHARED_DATA_REF_KEY) | |
375 | return sizeof(struct btrfs_shared_data_ref) + | |
376 | sizeof(struct btrfs_extent_inline_ref); | |
377 | if (type == BTRFS_EXTENT_DATA_REF_KEY) | |
378 | return sizeof(struct btrfs_extent_data_ref) + | |
379 | offsetof(struct btrfs_extent_inline_ref, offset); | |
d9a620f7 BB |
380 | if (type == BTRFS_EXTENT_OWNER_REF_KEY) |
381 | return sizeof(struct btrfs_extent_inline_ref); | |
07e81dc9 JB |
382 | return 0; |
383 | } | |
384 | ||
385 | /* struct btrfs_node */ | |
386 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
387 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); | |
388 | BTRFS_SETGET_STACK_FUNCS(stack_key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
389 | BTRFS_SETGET_STACK_FUNCS(stack_key_generation, struct btrfs_key_ptr, | |
390 | generation, 64); | |
391 | ||
392 | static inline u64 btrfs_node_blockptr(const struct extent_buffer *eb, int nr) | |
393 | { | |
394 | unsigned long ptr; | |
395 | ||
396 | ptr = offsetof(struct btrfs_node, ptrs) + | |
397 | sizeof(struct btrfs_key_ptr) * nr; | |
398 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); | |
399 | } | |
400 | ||
401 | static inline void btrfs_set_node_blockptr(const struct extent_buffer *eb, | |
402 | int nr, u64 val) | |
403 | { | |
404 | unsigned long ptr; | |
405 | ||
406 | ptr = offsetof(struct btrfs_node, ptrs) + | |
407 | sizeof(struct btrfs_key_ptr) * nr; | |
408 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); | |
409 | } | |
410 | ||
411 | static inline u64 btrfs_node_ptr_generation(const struct extent_buffer *eb, int nr) | |
412 | { | |
413 | unsigned long ptr; | |
414 | ||
415 | ptr = offsetof(struct btrfs_node, ptrs) + | |
416 | sizeof(struct btrfs_key_ptr) * nr; | |
417 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); | |
418 | } | |
419 | ||
420 | static inline void btrfs_set_node_ptr_generation(const struct extent_buffer *eb, | |
421 | int nr, u64 val) | |
422 | { | |
423 | unsigned long ptr; | |
424 | ||
425 | ptr = offsetof(struct btrfs_node, ptrs) + | |
426 | sizeof(struct btrfs_key_ptr) * nr; | |
427 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); | |
428 | } | |
429 | ||
e23efd8e | 430 | static inline unsigned long btrfs_node_key_ptr_offset(const struct extent_buffer *eb, int nr) |
07e81dc9 JB |
431 | { |
432 | return offsetof(struct btrfs_node, ptrs) + | |
433 | sizeof(struct btrfs_key_ptr) * nr; | |
434 | } | |
435 | ||
436 | void btrfs_node_key(const struct extent_buffer *eb, | |
437 | struct btrfs_disk_key *disk_key, int nr); | |
438 | ||
439 | static inline void btrfs_set_node_key(const struct extent_buffer *eb, | |
440 | struct btrfs_disk_key *disk_key, int nr) | |
441 | { | |
442 | unsigned long ptr; | |
443 | ||
e23efd8e | 444 | ptr = btrfs_node_key_ptr_offset(eb, nr); |
07e81dc9 JB |
445 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, |
446 | struct btrfs_key_ptr, key, disk_key); | |
447 | } | |
448 | ||
449 | /* struct btrfs_item */ | |
450 | BTRFS_SETGET_FUNCS(raw_item_offset, struct btrfs_item, offset, 32); | |
451 | BTRFS_SETGET_FUNCS(raw_item_size, struct btrfs_item, size, 32); | |
452 | BTRFS_SETGET_STACK_FUNCS(stack_item_offset, struct btrfs_item, offset, 32); | |
453 | BTRFS_SETGET_STACK_FUNCS(stack_item_size, struct btrfs_item, size, 32); | |
454 | ||
42c9419a | 455 | static inline unsigned long btrfs_item_nr_offset(const struct extent_buffer *eb, int nr) |
07e81dc9 JB |
456 | { |
457 | return offsetof(struct btrfs_leaf, items) + | |
458 | sizeof(struct btrfs_item) * nr; | |
459 | } | |
460 | ||
42c9419a | 461 | static inline struct btrfs_item *btrfs_item_nr(const struct extent_buffer *eb, int nr) |
07e81dc9 | 462 | { |
42c9419a | 463 | return (struct btrfs_item *)btrfs_item_nr_offset(eb, nr); |
07e81dc9 JB |
464 | } |
465 | ||
466 | #define BTRFS_ITEM_SETGET_FUNCS(member) \ | |
467 | static inline u32 btrfs_item_##member(const struct extent_buffer *eb, int slot) \ | |
468 | { \ | |
42c9419a | 469 | return btrfs_raw_item_##member(eb, btrfs_item_nr(eb, slot)); \ |
07e81dc9 JB |
470 | } \ |
471 | static inline void btrfs_set_item_##member(const struct extent_buffer *eb, \ | |
472 | int slot, u32 val) \ | |
473 | { \ | |
42c9419a | 474 | btrfs_set_raw_item_##member(eb, btrfs_item_nr(eb, slot), val); \ |
07e81dc9 JB |
475 | } \ |
476 | static inline u32 btrfs_token_item_##member(struct btrfs_map_token *token, \ | |
477 | int slot) \ | |
478 | { \ | |
42c9419a | 479 | struct btrfs_item *item = btrfs_item_nr(token->eb, slot); \ |
07e81dc9 JB |
480 | return btrfs_token_raw_item_##member(token, item); \ |
481 | } \ | |
482 | static inline void btrfs_set_token_item_##member(struct btrfs_map_token *token, \ | |
483 | int slot, u32 val) \ | |
484 | { \ | |
42c9419a | 485 | struct btrfs_item *item = btrfs_item_nr(token->eb, slot); \ |
07e81dc9 JB |
486 | btrfs_set_token_raw_item_##member(token, item, val); \ |
487 | } | |
488 | ||
489 | BTRFS_ITEM_SETGET_FUNCS(offset) | |
490 | BTRFS_ITEM_SETGET_FUNCS(size); | |
491 | ||
492 | static inline u32 btrfs_item_data_end(const struct extent_buffer *eb, int nr) | |
493 | { | |
494 | return btrfs_item_offset(eb, nr) + btrfs_item_size(eb, nr); | |
495 | } | |
496 | ||
497 | static inline void btrfs_item_key(const struct extent_buffer *eb, | |
498 | struct btrfs_disk_key *disk_key, int nr) | |
499 | { | |
42c9419a | 500 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
07e81dc9 JB |
501 | |
502 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
503 | } | |
504 | ||
505 | static inline void btrfs_set_item_key(struct extent_buffer *eb, | |
506 | struct btrfs_disk_key *disk_key, int nr) | |
507 | { | |
42c9419a | 508 | struct btrfs_item *item = btrfs_item_nr(eb, nr); |
07e81dc9 JB |
509 | |
510 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); | |
511 | } | |
512 | ||
513 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); | |
514 | ||
515 | /* struct btrfs_root_ref */ | |
516 | BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64); | |
517 | BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64); | |
518 | BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16); | |
054056bd JB |
519 | BTRFS_SETGET_STACK_FUNCS(stack_root_ref_dirid, struct btrfs_root_ref, dirid, 64); |
520 | BTRFS_SETGET_STACK_FUNCS(stack_root_ref_sequence, struct btrfs_root_ref, sequence, 64); | |
521 | BTRFS_SETGET_STACK_FUNCS(stack_root_ref_name_len, struct btrfs_root_ref, name_len, 16); | |
07e81dc9 JB |
522 | |
523 | /* struct btrfs_dir_item */ | |
524 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); | |
94a48aef | 525 | BTRFS_SETGET_FUNCS(dir_flags, struct btrfs_dir_item, type, 8); |
07e81dc9 JB |
526 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); |
527 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); | |
94a48aef | 528 | BTRFS_SETGET_STACK_FUNCS(stack_dir_flags, struct btrfs_dir_item, type, 8); |
07e81dc9 JB |
529 | BTRFS_SETGET_STACK_FUNCS(stack_dir_data_len, struct btrfs_dir_item, data_len, 16); |
530 | BTRFS_SETGET_STACK_FUNCS(stack_dir_name_len, struct btrfs_dir_item, name_len, 16); | |
531 | BTRFS_SETGET_STACK_FUNCS(stack_dir_transid, struct btrfs_dir_item, transid, 64); | |
532 | ||
94a48aef OS |
533 | static inline u8 btrfs_dir_ftype(const struct extent_buffer *eb, |
534 | const struct btrfs_dir_item *item) | |
535 | { | |
536 | return btrfs_dir_flags_to_ftype(btrfs_dir_flags(eb, item)); | |
537 | } | |
538 | ||
539 | static inline u8 btrfs_stack_dir_ftype(const struct btrfs_dir_item *item) | |
540 | { | |
541 | return btrfs_dir_flags_to_ftype(btrfs_stack_dir_flags(item)); | |
542 | } | |
543 | ||
07e81dc9 JB |
544 | static inline void btrfs_dir_item_key(const struct extent_buffer *eb, |
545 | const struct btrfs_dir_item *item, | |
546 | struct btrfs_disk_key *key) | |
547 | { | |
548 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); | |
549 | } | |
550 | ||
551 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, | |
552 | struct btrfs_dir_item *item, | |
553 | const struct btrfs_disk_key *key) | |
554 | { | |
555 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); | |
556 | } | |
557 | ||
558 | BTRFS_SETGET_FUNCS(free_space_entries, struct btrfs_free_space_header, | |
559 | num_entries, 64); | |
560 | BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header, | |
561 | num_bitmaps, 64); | |
562 | BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header, | |
563 | generation, 64); | |
564 | ||
565 | static inline void btrfs_free_space_key(const struct extent_buffer *eb, | |
566 | const struct btrfs_free_space_header *h, | |
567 | struct btrfs_disk_key *key) | |
568 | { | |
569 | read_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
570 | } | |
571 | ||
572 | static inline void btrfs_set_free_space_key(struct extent_buffer *eb, | |
573 | struct btrfs_free_space_header *h, | |
574 | const struct btrfs_disk_key *key) | |
575 | { | |
576 | write_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
577 | } | |
578 | ||
579 | /* struct btrfs_disk_key */ | |
580 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, objectid, 64); | |
581 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); | |
582 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); | |
583 | ||
584 | #ifdef __LITTLE_ENDIAN | |
585 | ||
586 | /* | |
587 | * Optimized helpers for little-endian architectures where CPU and on-disk | |
588 | * structures have the same endianness and we can skip conversions. | |
589 | */ | |
590 | ||
591 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu_key, | |
592 | const struct btrfs_disk_key *disk_key) | |
593 | { | |
594 | memcpy(cpu_key, disk_key, sizeof(struct btrfs_key)); | |
595 | } | |
596 | ||
597 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk_key, | |
598 | const struct btrfs_key *cpu_key) | |
599 | { | |
600 | memcpy(disk_key, cpu_key, sizeof(struct btrfs_key)); | |
601 | } | |
602 | ||
603 | static inline void btrfs_node_key_to_cpu(const struct extent_buffer *eb, | |
604 | struct btrfs_key *cpu_key, int nr) | |
605 | { | |
606 | struct btrfs_disk_key *disk_key = (struct btrfs_disk_key *)cpu_key; | |
607 | ||
608 | btrfs_node_key(eb, disk_key, nr); | |
609 | } | |
610 | ||
611 | static inline void btrfs_item_key_to_cpu(const struct extent_buffer *eb, | |
612 | struct btrfs_key *cpu_key, int nr) | |
613 | { | |
614 | struct btrfs_disk_key *disk_key = (struct btrfs_disk_key *)cpu_key; | |
615 | ||
616 | btrfs_item_key(eb, disk_key, nr); | |
617 | } | |
618 | ||
619 | static inline void btrfs_dir_item_key_to_cpu(const struct extent_buffer *eb, | |
620 | const struct btrfs_dir_item *item, | |
621 | struct btrfs_key *cpu_key) | |
622 | { | |
623 | struct btrfs_disk_key *disk_key = (struct btrfs_disk_key *)cpu_key; | |
624 | ||
625 | btrfs_dir_item_key(eb, item, disk_key); | |
626 | } | |
627 | ||
628 | #else | |
629 | ||
630 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, | |
631 | const struct btrfs_disk_key *disk) | |
632 | { | |
633 | cpu->offset = le64_to_cpu(disk->offset); | |
634 | cpu->type = disk->type; | |
635 | cpu->objectid = le64_to_cpu(disk->objectid); | |
636 | } | |
637 | ||
638 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
639 | const struct btrfs_key *cpu) | |
640 | { | |
641 | disk->offset = cpu_to_le64(cpu->offset); | |
642 | disk->type = cpu->type; | |
643 | disk->objectid = cpu_to_le64(cpu->objectid); | |
644 | } | |
645 | ||
646 | static inline void btrfs_node_key_to_cpu(const struct extent_buffer *eb, | |
647 | struct btrfs_key *key, int nr) | |
648 | { | |
649 | struct btrfs_disk_key disk_key; | |
650 | ||
651 | btrfs_node_key(eb, &disk_key, nr); | |
652 | btrfs_disk_key_to_cpu(key, &disk_key); | |
653 | } | |
654 | ||
655 | static inline void btrfs_item_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_item_key(eb, &disk_key, nr); | |
661 | btrfs_disk_key_to_cpu(key, &disk_key); | |
662 | } | |
663 | ||
664 | static inline void btrfs_dir_item_key_to_cpu(const struct extent_buffer *eb, | |
665 | const struct btrfs_dir_item *item, | |
666 | struct btrfs_key *key) | |
667 | { | |
668 | struct btrfs_disk_key disk_key; | |
669 | ||
670 | btrfs_dir_item_key(eb, item, &disk_key); | |
671 | btrfs_disk_key_to_cpu(key, &disk_key); | |
672 | } | |
673 | ||
674 | #endif | |
675 | ||
676 | /* struct btrfs_header */ | |
677 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); | |
678 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, generation, 64); | |
679 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); | |
680 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); | |
681 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); | |
682 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); | |
683 | BTRFS_SETGET_STACK_FUNCS(stack_header_generation, struct btrfs_header, | |
684 | generation, 64); | |
685 | BTRFS_SETGET_STACK_FUNCS(stack_header_owner, struct btrfs_header, owner, 64); | |
686 | BTRFS_SETGET_STACK_FUNCS(stack_header_nritems, struct btrfs_header, nritems, 32); | |
687 | BTRFS_SETGET_STACK_FUNCS(stack_header_bytenr, struct btrfs_header, bytenr, 64); | |
688 | ||
689 | static inline int btrfs_header_flag(const struct extent_buffer *eb, u64 flag) | |
690 | { | |
691 | return (btrfs_header_flags(eb) & flag) == flag; | |
692 | } | |
693 | ||
694 | static inline void btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) | |
695 | { | |
696 | u64 flags = btrfs_header_flags(eb); | |
697 | ||
698 | btrfs_set_header_flags(eb, flags | flag); | |
699 | } | |
700 | ||
701 | static inline void btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) | |
702 | { | |
703 | u64 flags = btrfs_header_flags(eb); | |
704 | ||
705 | btrfs_set_header_flags(eb, flags & ~flag); | |
706 | } | |
707 | ||
708 | static inline int btrfs_header_backref_rev(const struct extent_buffer *eb) | |
709 | { | |
710 | u64 flags = btrfs_header_flags(eb); | |
711 | ||
712 | return flags >> BTRFS_BACKREF_REV_SHIFT; | |
713 | } | |
714 | ||
715 | static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb, int rev) | |
716 | { | |
717 | u64 flags = btrfs_header_flags(eb); | |
718 | ||
719 | flags &= ~BTRFS_BACKREF_REV_MASK; | |
720 | flags |= (u64)rev << BTRFS_BACKREF_REV_SHIFT; | |
721 | btrfs_set_header_flags(eb, flags); | |
722 | } | |
723 | ||
724 | static inline int btrfs_is_leaf(const struct extent_buffer *eb) | |
725 | { | |
726 | return btrfs_header_level(eb) == 0; | |
727 | } | |
728 | ||
729 | /* struct btrfs_root_item */ | |
730 | BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, generation, 64); | |
731 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); | |
732 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); | |
733 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); | |
734 | ||
735 | BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, generation, 64); | |
736 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); | |
737 | BTRFS_SETGET_STACK_FUNCS(root_drop_level, struct btrfs_root_item, drop_level, 8); | |
738 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); | |
739 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); | |
740 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); | |
741 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64); | |
742 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); | |
743 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); | |
744 | BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item, | |
745 | last_snapshot, 64); | |
746 | BTRFS_SETGET_STACK_FUNCS(root_generation_v2, struct btrfs_root_item, | |
747 | generation_v2, 64); | |
748 | BTRFS_SETGET_STACK_FUNCS(root_ctransid, struct btrfs_root_item, ctransid, 64); | |
749 | BTRFS_SETGET_STACK_FUNCS(root_otransid, struct btrfs_root_item, otransid, 64); | |
750 | BTRFS_SETGET_STACK_FUNCS(root_stransid, struct btrfs_root_item, stransid, 64); | |
751 | BTRFS_SETGET_STACK_FUNCS(root_rtransid, struct btrfs_root_item, rtransid, 64); | |
752 | ||
07e81dc9 JB |
753 | /* struct btrfs_root_backup */ |
754 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root, struct btrfs_root_backup, | |
755 | tree_root, 64); | |
756 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_gen, struct btrfs_root_backup, | |
757 | tree_root_gen, 64); | |
758 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_level, struct btrfs_root_backup, | |
759 | tree_root_level, 8); | |
760 | ||
761 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root, struct btrfs_root_backup, | |
762 | chunk_root, 64); | |
763 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_gen, struct btrfs_root_backup, | |
764 | chunk_root_gen, 64); | |
765 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_level, struct btrfs_root_backup, | |
766 | chunk_root_level, 8); | |
767 | ||
768 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root, struct btrfs_root_backup, | |
769 | extent_root, 64); | |
770 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_gen, struct btrfs_root_backup, | |
771 | extent_root_gen, 64); | |
772 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_level, struct btrfs_root_backup, | |
773 | extent_root_level, 8); | |
774 | ||
775 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root, struct btrfs_root_backup, | |
776 | fs_root, 64); | |
777 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_gen, struct btrfs_root_backup, | |
778 | fs_root_gen, 64); | |
779 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_level, struct btrfs_root_backup, | |
780 | fs_root_level, 8); | |
781 | ||
782 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root, struct btrfs_root_backup, | |
783 | dev_root, 64); | |
784 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_gen, struct btrfs_root_backup, | |
785 | dev_root_gen, 64); | |
786 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_level, struct btrfs_root_backup, | |
787 | dev_root_level, 8); | |
788 | ||
789 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root, struct btrfs_root_backup, | |
790 | csum_root, 64); | |
791 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_gen, struct btrfs_root_backup, | |
792 | csum_root_gen, 64); | |
793 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_level, struct btrfs_root_backup, | |
794 | csum_root_level, 8); | |
795 | BTRFS_SETGET_STACK_FUNCS(backup_total_bytes, struct btrfs_root_backup, | |
796 | total_bytes, 64); | |
797 | BTRFS_SETGET_STACK_FUNCS(backup_bytes_used, struct btrfs_root_backup, | |
798 | bytes_used, 64); | |
799 | BTRFS_SETGET_STACK_FUNCS(backup_num_devices, struct btrfs_root_backup, | |
800 | num_devices, 64); | |
801 | ||
802 | /* struct btrfs_balance_item */ | |
803 | BTRFS_SETGET_FUNCS(balance_flags, struct btrfs_balance_item, flags, 64); | |
804 | ||
805 | static inline void btrfs_balance_data(const struct extent_buffer *eb, | |
806 | const struct btrfs_balance_item *bi, | |
807 | struct btrfs_disk_balance_args *ba) | |
808 | { | |
809 | read_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
810 | } | |
811 | ||
812 | static inline void btrfs_set_balance_data(struct extent_buffer *eb, | |
813 | struct btrfs_balance_item *bi, | |
814 | const struct btrfs_disk_balance_args *ba) | |
815 | { | |
816 | write_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
817 | } | |
818 | ||
819 | static inline void btrfs_balance_meta(const struct extent_buffer *eb, | |
820 | const struct btrfs_balance_item *bi, | |
821 | struct btrfs_disk_balance_args *ba) | |
822 | { | |
823 | read_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
824 | } | |
825 | ||
826 | static inline void btrfs_set_balance_meta(struct extent_buffer *eb, | |
827 | struct btrfs_balance_item *bi, | |
828 | const struct btrfs_disk_balance_args *ba) | |
829 | { | |
830 | write_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
831 | } | |
832 | ||
833 | static inline void btrfs_balance_sys(const struct extent_buffer *eb, | |
834 | const struct btrfs_balance_item *bi, | |
835 | struct btrfs_disk_balance_args *ba) | |
836 | { | |
837 | read_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
838 | } | |
839 | ||
840 | static inline void btrfs_set_balance_sys(struct extent_buffer *eb, | |
841 | struct btrfs_balance_item *bi, | |
842 | const struct btrfs_disk_balance_args *ba) | |
843 | { | |
844 | write_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
845 | } | |
846 | ||
847 | static inline void btrfs_disk_balance_args_to_cpu(struct btrfs_balance_args *cpu, | |
848 | const struct btrfs_disk_balance_args *disk) | |
849 | { | |
850 | memset(cpu, 0, sizeof(*cpu)); | |
851 | ||
852 | cpu->profiles = le64_to_cpu(disk->profiles); | |
853 | cpu->usage = le64_to_cpu(disk->usage); | |
854 | cpu->devid = le64_to_cpu(disk->devid); | |
855 | cpu->pstart = le64_to_cpu(disk->pstart); | |
856 | cpu->pend = le64_to_cpu(disk->pend); | |
857 | cpu->vstart = le64_to_cpu(disk->vstart); | |
858 | cpu->vend = le64_to_cpu(disk->vend); | |
859 | cpu->target = le64_to_cpu(disk->target); | |
860 | cpu->flags = le64_to_cpu(disk->flags); | |
861 | cpu->limit = le64_to_cpu(disk->limit); | |
862 | cpu->stripes_min = le32_to_cpu(disk->stripes_min); | |
863 | cpu->stripes_max = le32_to_cpu(disk->stripes_max); | |
864 | } | |
865 | ||
866 | static inline void btrfs_cpu_balance_args_to_disk( | |
867 | struct btrfs_disk_balance_args *disk, | |
868 | const struct btrfs_balance_args *cpu) | |
869 | { | |
870 | memset(disk, 0, sizeof(*disk)); | |
871 | ||
872 | disk->profiles = cpu_to_le64(cpu->profiles); | |
873 | disk->usage = cpu_to_le64(cpu->usage); | |
874 | disk->devid = cpu_to_le64(cpu->devid); | |
875 | disk->pstart = cpu_to_le64(cpu->pstart); | |
876 | disk->pend = cpu_to_le64(cpu->pend); | |
877 | disk->vstart = cpu_to_le64(cpu->vstart); | |
878 | disk->vend = cpu_to_le64(cpu->vend); | |
879 | disk->target = cpu_to_le64(cpu->target); | |
880 | disk->flags = cpu_to_le64(cpu->flags); | |
881 | disk->limit = cpu_to_le64(cpu->limit); | |
882 | disk->stripes_min = cpu_to_le32(cpu->stripes_min); | |
883 | disk->stripes_max = cpu_to_le32(cpu->stripes_max); | |
884 | } | |
885 | ||
886 | /* struct btrfs_super_block */ | |
887 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); | |
888 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); | |
889 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, | |
890 | generation, 64); | |
891 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); | |
892 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, | |
893 | struct btrfs_super_block, sys_chunk_array_size, 32); | |
894 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation, | |
895 | struct btrfs_super_block, chunk_root_generation, 64); | |
896 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, | |
897 | root_level, 8); | |
898 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, | |
899 | chunk_root, 64); | |
900 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, | |
901 | chunk_root_level, 8); | |
902 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, log_root, 64); | |
903 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, | |
904 | log_root_level, 8); | |
905 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, | |
906 | total_bytes, 64); | |
907 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, | |
908 | bytes_used, 64); | |
909 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, | |
910 | sectorsize, 32); | |
911 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, | |
912 | nodesize, 32); | |
913 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, | |
914 | stripesize, 32); | |
915 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, | |
916 | root_dir_objectid, 64); | |
917 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, | |
918 | num_devices, 64); | |
919 | BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block, | |
920 | compat_flags, 64); | |
921 | BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block, | |
922 | compat_ro_flags, 64); | |
923 | BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block, | |
924 | incompat_flags, 64); | |
925 | BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block, | |
926 | csum_type, 16); | |
927 | BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block, | |
928 | cache_generation, 64); | |
929 | BTRFS_SETGET_STACK_FUNCS(super_magic, struct btrfs_super_block, magic, 64); | |
930 | BTRFS_SETGET_STACK_FUNCS(super_uuid_tree_generation, struct btrfs_super_block, | |
931 | uuid_tree_generation, 64); | |
0c703003 JB |
932 | BTRFS_SETGET_STACK_FUNCS(super_nr_global_roots, struct btrfs_super_block, |
933 | nr_global_roots, 64); | |
07e81dc9 | 934 | |
07e81dc9 JB |
935 | /* struct btrfs_file_extent_item */ |
936 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_type, struct btrfs_file_extent_item, | |
937 | type, 8); | |
938 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_bytenr, | |
939 | struct btrfs_file_extent_item, disk_bytenr, 64); | |
940 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_offset, | |
941 | struct btrfs_file_extent_item, offset, 64); | |
942 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_generation, | |
943 | struct btrfs_file_extent_item, generation, 64); | |
944 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_num_bytes, | |
945 | struct btrfs_file_extent_item, num_bytes, 64); | |
946 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_ram_bytes, | |
947 | struct btrfs_file_extent_item, ram_bytes, 64); | |
948 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_num_bytes, | |
949 | struct btrfs_file_extent_item, disk_num_bytes, 64); | |
950 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_compression, | |
951 | struct btrfs_file_extent_item, compression, 8); | |
952 | ||
07e81dc9 JB |
953 | |
954 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); | |
955 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, | |
956 | disk_bytenr, 64); | |
957 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, | |
958 | generation, 64); | |
959 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, | |
960 | disk_num_bytes, 64); | |
961 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, | |
962 | offset, 64); | |
963 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, | |
964 | num_bytes, 64); | |
965 | BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, | |
966 | ram_bytes, 64); | |
967 | BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, | |
968 | compression, 8); | |
969 | BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, | |
970 | encryption, 8); | |
971 | BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, | |
972 | other_encoding, 16); | |
973 | ||
07e81dc9 JB |
974 | /* btrfs_qgroup_status_item */ |
975 | BTRFS_SETGET_FUNCS(qgroup_status_generation, struct btrfs_qgroup_status_item, | |
976 | generation, 64); | |
977 | BTRFS_SETGET_FUNCS(qgroup_status_version, struct btrfs_qgroup_status_item, | |
978 | version, 64); | |
979 | BTRFS_SETGET_FUNCS(qgroup_status_flags, struct btrfs_qgroup_status_item, | |
980 | flags, 64); | |
981 | BTRFS_SETGET_FUNCS(qgroup_status_rescan, struct btrfs_qgroup_status_item, | |
982 | rescan, 64); | |
bd7c1ea3 BB |
983 | BTRFS_SETGET_FUNCS(qgroup_status_enable_gen, struct btrfs_qgroup_status_item, |
984 | enable_gen, 64); | |
07e81dc9 JB |
985 | |
986 | /* btrfs_qgroup_info_item */ | |
987 | BTRFS_SETGET_FUNCS(qgroup_info_generation, struct btrfs_qgroup_info_item, | |
988 | generation, 64); | |
989 | BTRFS_SETGET_FUNCS(qgroup_info_rfer, struct btrfs_qgroup_info_item, rfer, 64); | |
990 | BTRFS_SETGET_FUNCS(qgroup_info_rfer_cmpr, struct btrfs_qgroup_info_item, | |
991 | rfer_cmpr, 64); | |
992 | BTRFS_SETGET_FUNCS(qgroup_info_excl, struct btrfs_qgroup_info_item, excl, 64); | |
993 | BTRFS_SETGET_FUNCS(qgroup_info_excl_cmpr, struct btrfs_qgroup_info_item, | |
994 | excl_cmpr, 64); | |
995 | ||
996 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_generation, | |
997 | struct btrfs_qgroup_info_item, generation, 64); | |
998 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer, struct btrfs_qgroup_info_item, | |
999 | rfer, 64); | |
1000 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer_cmpr, | |
1001 | struct btrfs_qgroup_info_item, rfer_cmpr, 64); | |
1002 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl, struct btrfs_qgroup_info_item, | |
1003 | excl, 64); | |
1004 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl_cmpr, | |
1005 | struct btrfs_qgroup_info_item, excl_cmpr, 64); | |
1006 | ||
1007 | /* btrfs_qgroup_limit_item */ | |
1008 | BTRFS_SETGET_FUNCS(qgroup_limit_flags, struct btrfs_qgroup_limit_item, flags, 64); | |
1009 | BTRFS_SETGET_FUNCS(qgroup_limit_max_rfer, struct btrfs_qgroup_limit_item, | |
1010 | max_rfer, 64); | |
1011 | BTRFS_SETGET_FUNCS(qgroup_limit_max_excl, struct btrfs_qgroup_limit_item, | |
1012 | max_excl, 64); | |
1013 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_rfer, struct btrfs_qgroup_limit_item, | |
1014 | rsv_rfer, 64); | |
1015 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_excl, struct btrfs_qgroup_limit_item, | |
1016 | rsv_excl, 64); | |
054056bd JB |
1017 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_flags, |
1018 | struct btrfs_qgroup_limit_item, flags, 64); | |
1019 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_max_rfer, | |
1020 | struct btrfs_qgroup_limit_item, max_rfer, 64); | |
1021 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_max_excl, | |
1022 | struct btrfs_qgroup_limit_item, max_excl, 64); | |
1023 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_rsv_rfer, | |
1024 | struct btrfs_qgroup_limit_item, rsv_rfer, 64); | |
1025 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_rsv_excl, | |
1026 | struct btrfs_qgroup_limit_item, rsv_excl, 64); | |
07e81dc9 JB |
1027 | |
1028 | /* btrfs_dev_replace_item */ | |
1029 | BTRFS_SETGET_FUNCS(dev_replace_src_devid, | |
1030 | struct btrfs_dev_replace_item, src_devid, 64); | |
1031 | BTRFS_SETGET_FUNCS(dev_replace_cont_reading_from_srcdev_mode, | |
1032 | struct btrfs_dev_replace_item, cont_reading_from_srcdev_mode, | |
1033 | 64); | |
1034 | BTRFS_SETGET_FUNCS(dev_replace_replace_state, struct btrfs_dev_replace_item, | |
1035 | replace_state, 64); | |
1036 | BTRFS_SETGET_FUNCS(dev_replace_time_started, struct btrfs_dev_replace_item, | |
1037 | time_started, 64); | |
1038 | BTRFS_SETGET_FUNCS(dev_replace_time_stopped, struct btrfs_dev_replace_item, | |
1039 | time_stopped, 64); | |
1040 | BTRFS_SETGET_FUNCS(dev_replace_num_write_errors, struct btrfs_dev_replace_item, | |
1041 | num_write_errors, 64); | |
1042 | BTRFS_SETGET_FUNCS(dev_replace_num_uncorrectable_read_errors, | |
1043 | struct btrfs_dev_replace_item, num_uncorrectable_read_errors, | |
1044 | 64); | |
1045 | BTRFS_SETGET_FUNCS(dev_replace_cursor_left, struct btrfs_dev_replace_item, | |
1046 | cursor_left, 64); | |
1047 | BTRFS_SETGET_FUNCS(dev_replace_cursor_right, struct btrfs_dev_replace_item, | |
1048 | cursor_right, 64); | |
1049 | ||
1050 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_src_devid, | |
1051 | struct btrfs_dev_replace_item, src_devid, 64); | |
1052 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cont_reading_from_srcdev_mode, | |
1053 | struct btrfs_dev_replace_item, | |
1054 | cont_reading_from_srcdev_mode, 64); | |
1055 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_replace_state, | |
1056 | struct btrfs_dev_replace_item, replace_state, 64); | |
1057 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_started, | |
1058 | struct btrfs_dev_replace_item, time_started, 64); | |
1059 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_stopped, | |
1060 | struct btrfs_dev_replace_item, time_stopped, 64); | |
1061 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_write_errors, | |
1062 | struct btrfs_dev_replace_item, num_write_errors, 64); | |
1063 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_uncorrectable_read_errors, | |
1064 | struct btrfs_dev_replace_item, | |
1065 | num_uncorrectable_read_errors, 64); | |
1066 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_left, | |
1067 | struct btrfs_dev_replace_item, cursor_left, 64); | |
1068 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_right, | |
1069 | struct btrfs_dev_replace_item, cursor_right, 64); | |
1070 | ||
1071 | /* btrfs_verity_descriptor_item */ | |
1072 | BTRFS_SETGET_FUNCS(verity_descriptor_encryption, struct btrfs_verity_descriptor_item, | |
1073 | encryption, 8); | |
1074 | BTRFS_SETGET_FUNCS(verity_descriptor_size, struct btrfs_verity_descriptor_item, | |
1075 | size, 64); | |
1076 | BTRFS_SETGET_STACK_FUNCS(stack_verity_descriptor_encryption, | |
1077 | struct btrfs_verity_descriptor_item, encryption, 8); | |
1078 | BTRFS_SETGET_STACK_FUNCS(stack_verity_descriptor_size, | |
1079 | struct btrfs_verity_descriptor_item, size, 64); | |
1080 | ||
1081 | /* Cast into the data area of the leaf. */ | |
1082 | #define btrfs_item_ptr(leaf, slot, type) \ | |
8009adf3 | 1083 | ((type *)(btrfs_item_nr_offset(leaf, 0) + btrfs_item_offset(leaf, slot))) |
07e81dc9 JB |
1084 | |
1085 | #define btrfs_item_ptr_offset(leaf, slot) \ | |
8009adf3 | 1086 | ((unsigned long)(btrfs_item_nr_offset(leaf, 0) + btrfs_item_offset(leaf, slot))) |
07e81dc9 | 1087 | |
ad1ac501 | 1088 | #endif |