1 /* SPDX-License-Identifier: GPL-2.0 */
2
3 #ifndef BTRFS_ACCESSORS_H
4 #define BTRFS_ACCESSORS_H
5
6 #include <linux/stddef.h>
7 #include <asm/unaligned.h>
8
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
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
get_unaligned_le8(const void * p)26 static inline u8 get_unaligned_le8(const void *p)
27 {
28 return *(u8 *)p;
29 }
30
put_unaligned_le8(u8 val,void * p)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), \
40 sizeof_field(type, member)))
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), \
46 sizeof_field(type, member)))
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 { \
68 static_assert(sizeof(u##bits) == sizeof_field(type, member)); \
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 { \
74 static_assert(sizeof(u##bits) == sizeof_field(type, member)); \
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 { \
80 static_assert(sizeof(u##bits) == sizeof_field(type, member)); \
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 { \
86 static_assert(sizeof(u##bits) == sizeof_field(type, member)); \
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 { \
93 const type *p = folio_address(eb->folios[0]) + \
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 { \
100 type *p = folio_address(eb->folios[0]) + offset_in_page(eb->start); \
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
btrfs_device_total_bytes(const struct extent_buffer * eb,struct btrfs_dev_item * s)114 static inline u64 btrfs_device_total_bytes(const struct extent_buffer *eb,
115 struct btrfs_dev_item *s)
116 {
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));
119 }
btrfs_set_device_total_bytes(const struct extent_buffer * eb,struct btrfs_dev_item * s,u64 val)120 static inline void btrfs_set_device_total_bytes(const struct extent_buffer *eb,
121 struct btrfs_dev_item *s,
122 u64 val)
123 {
124 static_assert(sizeof(u64) == sizeof_field(struct btrfs_dev_item, total_bytes));
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
btrfs_device_uuid(struct btrfs_dev_item * d)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
btrfs_device_fsid(struct btrfs_dev_item * d)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
btrfs_stripe_dev_uuid(struct btrfs_stripe * s)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
btrfs_stripe_nr(struct btrfs_chunk * c,int nr)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
btrfs_stripe_dev_uuid_nr(struct btrfs_chunk * c,int nr)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
btrfs_stripe_offset_nr(const struct extent_buffer * eb,struct btrfs_chunk * c,int nr)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
btrfs_set_stripe_offset_nr(struct extent_buffer * eb,struct btrfs_chunk * c,int nr,u64 val)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
btrfs_stripe_devid_nr(const struct extent_buffer * eb,struct btrfs_chunk * c,int nr)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
btrfs_set_stripe_devid_nr(struct extent_buffer * eb,struct btrfs_chunk * c,int nr,u64 val)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
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);
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);
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
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
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);
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
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
btrfs_tree_block_key(const struct extent_buffer * eb,struct btrfs_tree_block_info * item,struct btrfs_disk_key * key)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
btrfs_set_tree_block_key(const struct extent_buffer * eb,struct btrfs_tree_block_info * item,struct btrfs_disk_key * key)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
361 BTRFS_SETGET_FUNCS(extent_owner_ref_root_id, struct btrfs_extent_owner_ref,
362 root_id, 64);
363
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
btrfs_extent_inline_ref_size(int type)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);
380 if (type == BTRFS_EXTENT_OWNER_REF_KEY)
381 return sizeof(struct btrfs_extent_inline_ref);
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
btrfs_node_blockptr(const struct extent_buffer * eb,int nr)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
btrfs_set_node_blockptr(const struct extent_buffer * eb,int nr,u64 val)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
btrfs_node_ptr_generation(const struct extent_buffer * eb,int nr)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
btrfs_set_node_ptr_generation(const struct extent_buffer * eb,int nr,u64 val)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
btrfs_node_key_ptr_offset(const struct extent_buffer * eb,int nr)430 static inline unsigned long btrfs_node_key_ptr_offset(const struct extent_buffer *eb, int nr)
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
btrfs_set_node_key(const struct extent_buffer * eb,struct btrfs_disk_key * disk_key,int nr)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
444 ptr = btrfs_node_key_ptr_offset(eb, nr);
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
btrfs_item_nr_offset(const struct extent_buffer * eb,int nr)455 static inline unsigned long btrfs_item_nr_offset(const struct extent_buffer *eb, int nr)
456 {
457 return offsetof(struct btrfs_leaf, items) +
458 sizeof(struct btrfs_item) * nr;
459 }
460
btrfs_item_nr(const struct extent_buffer * eb,int nr)461 static inline struct btrfs_item *btrfs_item_nr(const struct extent_buffer *eb, int nr)
462 {
463 return (struct btrfs_item *)btrfs_item_nr_offset(eb, nr);
464 }
465
466 #define BTRFS_ITEM_SETGET_FUNCS(member) \
467 static inline u32 btrfs_item_##member(const struct extent_buffer *eb, int slot) \
468 { \
469 return btrfs_raw_item_##member(eb, btrfs_item_nr(eb, slot)); \
470 } \
471 static inline void btrfs_set_item_##member(const struct extent_buffer *eb, \
472 int slot, u32 val) \
473 { \
474 btrfs_set_raw_item_##member(eb, btrfs_item_nr(eb, slot), val); \
475 } \
476 static inline u32 btrfs_token_item_##member(struct btrfs_map_token *token, \
477 int slot) \
478 { \
479 struct btrfs_item *item = btrfs_item_nr(token->eb, slot); \
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 { \
485 struct btrfs_item *item = btrfs_item_nr(token->eb, slot); \
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
btrfs_item_data_end(const struct extent_buffer * eb,int nr)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
btrfs_item_key(const struct extent_buffer * eb,struct btrfs_disk_key * disk_key,int nr)497 static inline void btrfs_item_key(const struct extent_buffer *eb,
498 struct btrfs_disk_key *disk_key, int nr)
499 {
500 struct btrfs_item *item = btrfs_item_nr(eb, nr);
501
502 read_eb_member(eb, item, struct btrfs_item, key, disk_key);
503 }
504
btrfs_set_item_key(struct extent_buffer * eb,struct btrfs_disk_key * disk_key,int nr)505 static inline void btrfs_set_item_key(struct extent_buffer *eb,
506 struct btrfs_disk_key *disk_key, int nr)
507 {
508 struct btrfs_item *item = btrfs_item_nr(eb, nr);
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);
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);
522
523 /* struct btrfs_dir_item */
524 BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16);
525 BTRFS_SETGET_FUNCS(dir_flags, struct btrfs_dir_item, type, 8);
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);
528 BTRFS_SETGET_STACK_FUNCS(stack_dir_flags, struct btrfs_dir_item, type, 8);
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
btrfs_dir_ftype(const struct extent_buffer * eb,const struct btrfs_dir_item * item)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
btrfs_stack_dir_ftype(const struct btrfs_dir_item * item)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
btrfs_dir_item_key(const struct extent_buffer * eb,const struct btrfs_dir_item * item,struct btrfs_disk_key * key)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
btrfs_set_dir_item_key(struct extent_buffer * eb,struct btrfs_dir_item * item,const struct btrfs_disk_key * key)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
btrfs_free_space_key(const struct extent_buffer * eb,const struct btrfs_free_space_header * h,struct btrfs_disk_key * key)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
btrfs_set_free_space_key(struct extent_buffer * eb,struct btrfs_free_space_header * h,const struct btrfs_disk_key * key)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
btrfs_disk_key_to_cpu(struct btrfs_key * cpu_key,const struct btrfs_disk_key * disk_key)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
btrfs_cpu_key_to_disk(struct btrfs_disk_key * disk_key,const struct btrfs_key * cpu_key)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
btrfs_node_key_to_cpu(const struct extent_buffer * eb,struct btrfs_key * cpu_key,int nr)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
btrfs_item_key_to_cpu(const struct extent_buffer * eb,struct btrfs_key * cpu_key,int nr)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
btrfs_dir_item_key_to_cpu(const struct extent_buffer * eb,const struct btrfs_dir_item * item,struct btrfs_key * cpu_key)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
btrfs_disk_key_to_cpu(struct btrfs_key * cpu,const struct btrfs_disk_key * disk)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
btrfs_cpu_key_to_disk(struct btrfs_disk_key * disk,const struct btrfs_key * cpu)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
btrfs_node_key_to_cpu(const struct extent_buffer * eb,struct btrfs_key * key,int nr)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
btrfs_item_key_to_cpu(const struct extent_buffer * eb,struct btrfs_key * key,int nr)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
btrfs_dir_item_key_to_cpu(const struct extent_buffer * eb,const struct btrfs_dir_item * item,struct btrfs_key * key)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
btrfs_header_flag(const struct extent_buffer * eb,u64 flag)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
btrfs_set_header_flag(struct extent_buffer * eb,u64 flag)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
btrfs_clear_header_flag(struct extent_buffer * eb,u64 flag)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
btrfs_header_backref_rev(const struct extent_buffer * eb)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
btrfs_set_header_backref_rev(struct extent_buffer * eb,int rev)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
btrfs_is_leaf(const struct extent_buffer * eb)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
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
btrfs_balance_data(const struct extent_buffer * eb,const struct btrfs_balance_item * bi,struct btrfs_disk_balance_args * ba)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
btrfs_set_balance_data(struct extent_buffer * eb,struct btrfs_balance_item * bi,const struct btrfs_disk_balance_args * ba)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
btrfs_balance_meta(const struct extent_buffer * eb,const struct btrfs_balance_item * bi,struct btrfs_disk_balance_args * ba)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
btrfs_set_balance_meta(struct extent_buffer * eb,struct btrfs_balance_item * bi,const struct btrfs_disk_balance_args * ba)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
btrfs_balance_sys(const struct extent_buffer * eb,const struct btrfs_balance_item * bi,struct btrfs_disk_balance_args * ba)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
btrfs_set_balance_sys(struct extent_buffer * eb,struct btrfs_balance_item * bi,const struct btrfs_disk_balance_args * ba)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
btrfs_disk_balance_args_to_cpu(struct btrfs_balance_args * cpu,const struct btrfs_disk_balance_args * disk)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
btrfs_cpu_balance_args_to_disk(struct btrfs_disk_balance_args * disk,const struct btrfs_balance_args * cpu)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);
932 BTRFS_SETGET_STACK_FUNCS(super_nr_global_roots, struct btrfs_super_block,
933 nr_global_roots, 64);
934
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
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
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);
983 BTRFS_SETGET_FUNCS(qgroup_status_enable_gen, struct btrfs_qgroup_status_item,
984 enable_gen, 64);
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);
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);
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) \
1083 ((type *)(btrfs_item_nr_offset(leaf, 0) + btrfs_item_offset(leaf, slot)))
1084
1085 #define btrfs_item_ptr_offset(leaf, slot) \
1086 ((unsigned long)(btrfs_item_nr_offset(leaf, 0) + btrfs_item_offset(leaf, slot)))
1087
1088 #endif
1089