1 /* SPDX-License-Identifier: GPL-2.0 */
2
3 #ifndef BTRFS_ACCESSORS_H
4 #define BTRFS_ACCESSORS_H
5
6 struct btrfs_map_token {
7 struct extent_buffer *eb;
8 char *kaddr;
9 unsigned long offset;
10 };
11
12 void btrfs_init_map_token(struct btrfs_map_token *token, struct extent_buffer *eb);
13
14 /*
15 * Some macros to generate set/get functions for the struct fields. This
16 * assumes there is a lefoo_to_cpu for every type, so lets make a simple one
17 * for u8:
18 */
19 #define le8_to_cpu(v) (v)
20 #define cpu_to_le8(v) (v)
21 #define __le8 u8
22
get_unaligned_le8(const void * p)23 static inline u8 get_unaligned_le8(const void *p)
24 {
25 return *(u8 *)p;
26 }
27
put_unaligned_le8(u8 val,void * p)28 static inline void put_unaligned_le8(u8 val, void *p)
29 {
30 *(u8 *)p = val;
31 }
32
33 #define read_eb_member(eb, ptr, type, member, result) (\
34 read_extent_buffer(eb, (char *)(result), \
35 ((unsigned long)(ptr)) + \
36 offsetof(type, member), \
37 sizeof(((type *)0)->member)))
38
39 #define write_eb_member(eb, ptr, type, member, result) (\
40 write_extent_buffer(eb, (char *)(result), \
41 ((unsigned long)(ptr)) + \
42 offsetof(type, member), \
43 sizeof(((type *)0)->member)))
44
45 #define DECLARE_BTRFS_SETGET_BITS(bits) \
46 u##bits btrfs_get_token_##bits(struct btrfs_map_token *token, \
47 const void *ptr, unsigned long off); \
48 void btrfs_set_token_##bits(struct btrfs_map_token *token, \
49 const void *ptr, unsigned long off, \
50 u##bits val); \
51 u##bits btrfs_get_##bits(const struct extent_buffer *eb, \
52 const void *ptr, unsigned long off); \
53 void btrfs_set_##bits(const struct extent_buffer *eb, void *ptr, \
54 unsigned long off, u##bits val);
55
56 DECLARE_BTRFS_SETGET_BITS(8)
57 DECLARE_BTRFS_SETGET_BITS(16)
58 DECLARE_BTRFS_SETGET_BITS(32)
59 DECLARE_BTRFS_SETGET_BITS(64)
60
61 #define BTRFS_SETGET_FUNCS(name, type, member, bits) \
62 static inline u##bits btrfs_##name(const struct extent_buffer *eb, \
63 const type *s) \
64 { \
65 static_assert(sizeof(u##bits) == sizeof(((type *)0))->member); \
66 return btrfs_get_##bits(eb, s, offsetof(type, member)); \
67 } \
68 static inline void btrfs_set_##name(const struct extent_buffer *eb, type *s, \
69 u##bits val) \
70 { \
71 static_assert(sizeof(u##bits) == sizeof(((type *)0))->member); \
72 btrfs_set_##bits(eb, s, offsetof(type, member), val); \
73 } \
74 static inline u##bits btrfs_token_##name(struct btrfs_map_token *token, \
75 const type *s) \
76 { \
77 static_assert(sizeof(u##bits) == sizeof(((type *)0))->member); \
78 return btrfs_get_token_##bits(token, s, offsetof(type, member));\
79 } \
80 static inline void btrfs_set_token_##name(struct btrfs_map_token *token,\
81 type *s, u##bits val) \
82 { \
83 static_assert(sizeof(u##bits) == sizeof(((type *)0))->member); \
84 btrfs_set_token_##bits(token, s, offsetof(type, member), val); \
85 }
86
87 #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \
88 static inline u##bits btrfs_##name(const struct extent_buffer *eb) \
89 { \
90 const type *p = page_address(eb->pages[0]) + \
91 offset_in_page(eb->start); \
92 return get_unaligned_le##bits(&p->member); \
93 } \
94 static inline void btrfs_set_##name(const struct extent_buffer *eb, \
95 u##bits val) \
96 { \
97 type *p = page_address(eb->pages[0]) + offset_in_page(eb->start); \
98 put_unaligned_le##bits(val, &p->member); \
99 }
100
101 #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \
102 static inline u##bits btrfs_##name(const type *s) \
103 { \
104 return get_unaligned_le##bits(&s->member); \
105 } \
106 static inline void btrfs_set_##name(type *s, u##bits val) \
107 { \
108 put_unaligned_le##bits(val, &s->member); \
109 }
110
btrfs_device_total_bytes(const struct extent_buffer * eb,struct btrfs_dev_item * s)111 static inline u64 btrfs_device_total_bytes(const struct extent_buffer *eb,
112 struct btrfs_dev_item *s)
113 {
114 static_assert(sizeof(u64) ==
115 sizeof(((struct btrfs_dev_item *)0))->total_bytes);
116 return btrfs_get_64(eb, s, offsetof(struct btrfs_dev_item,
117 total_bytes));
118 }
btrfs_set_device_total_bytes(const struct extent_buffer * eb,struct btrfs_dev_item * s,u64 val)119 static inline void btrfs_set_device_total_bytes(const struct extent_buffer *eb,
120 struct btrfs_dev_item *s,
121 u64 val)
122 {
123 static_assert(sizeof(u64) ==
124 sizeof(((struct btrfs_dev_item *)0))->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 /* struct btrfs_dev_extent */
310 BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, chunk_tree, 64);
311 BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent,
312 chunk_objectid, 64);
313 BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent,
314 chunk_offset, 64);
315 BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64);
316 BTRFS_SETGET_STACK_FUNCS(stack_dev_extent_chunk_tree, struct btrfs_dev_extent,
317 chunk_tree, 64);
318 BTRFS_SETGET_STACK_FUNCS(stack_dev_extent_chunk_objectid, struct btrfs_dev_extent,
319 chunk_objectid, 64);
320 BTRFS_SETGET_STACK_FUNCS(stack_dev_extent_chunk_offset, struct btrfs_dev_extent,
321 chunk_offset, 64);
322 BTRFS_SETGET_STACK_FUNCS(stack_dev_extent_length, struct btrfs_dev_extent, length, 64);
323
324 BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 64);
325 BTRFS_SETGET_FUNCS(extent_generation, struct btrfs_extent_item, generation, 64);
326 BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64);
327
328 BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8);
329
btrfs_tree_block_key(const struct extent_buffer * eb,struct btrfs_tree_block_info * item,struct btrfs_disk_key * key)330 static inline void btrfs_tree_block_key(const struct extent_buffer *eb,
331 struct btrfs_tree_block_info *item,
332 struct btrfs_disk_key *key)
333 {
334 read_eb_member(eb, item, struct btrfs_tree_block_info, key, key);
335 }
336
btrfs_set_tree_block_key(const struct extent_buffer * eb,struct btrfs_tree_block_info * item,struct btrfs_disk_key * key)337 static inline void btrfs_set_tree_block_key(const struct extent_buffer *eb,
338 struct btrfs_tree_block_info *item,
339 struct btrfs_disk_key *key)
340 {
341 write_eb_member(eb, item, struct btrfs_tree_block_info, key, key);
342 }
343
344 BTRFS_SETGET_FUNCS(extent_data_ref_root, struct btrfs_extent_data_ref, root, 64);
345 BTRFS_SETGET_FUNCS(extent_data_ref_objectid, struct btrfs_extent_data_ref,
346 objectid, 64);
347 BTRFS_SETGET_FUNCS(extent_data_ref_offset, struct btrfs_extent_data_ref,
348 offset, 64);
349 BTRFS_SETGET_FUNCS(extent_data_ref_count, struct btrfs_extent_data_ref, count, 32);
350
351 BTRFS_SETGET_FUNCS(shared_data_ref_count, struct btrfs_shared_data_ref, count, 32);
352
353 BTRFS_SETGET_FUNCS(extent_inline_ref_type, struct btrfs_extent_inline_ref,
354 type, 8);
355 BTRFS_SETGET_FUNCS(extent_inline_ref_offset, struct btrfs_extent_inline_ref,
356 offset, 64);
357
btrfs_extent_inline_ref_size(int type)358 static inline u32 btrfs_extent_inline_ref_size(int type)
359 {
360 if (type == BTRFS_TREE_BLOCK_REF_KEY ||
361 type == BTRFS_SHARED_BLOCK_REF_KEY)
362 return sizeof(struct btrfs_extent_inline_ref);
363 if (type == BTRFS_SHARED_DATA_REF_KEY)
364 return sizeof(struct btrfs_shared_data_ref) +
365 sizeof(struct btrfs_extent_inline_ref);
366 if (type == BTRFS_EXTENT_DATA_REF_KEY)
367 return sizeof(struct btrfs_extent_data_ref) +
368 offsetof(struct btrfs_extent_inline_ref, offset);
369 return 0;
370 }
371
372 /* struct btrfs_node */
373 BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64);
374 BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64);
375 BTRFS_SETGET_STACK_FUNCS(stack_key_blockptr, struct btrfs_key_ptr, blockptr, 64);
376 BTRFS_SETGET_STACK_FUNCS(stack_key_generation, struct btrfs_key_ptr,
377 generation, 64);
378
btrfs_node_blockptr(const struct extent_buffer * eb,int nr)379 static inline u64 btrfs_node_blockptr(const struct extent_buffer *eb, int nr)
380 {
381 unsigned long ptr;
382
383 ptr = offsetof(struct btrfs_node, ptrs) +
384 sizeof(struct btrfs_key_ptr) * nr;
385 return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr);
386 }
387
btrfs_set_node_blockptr(const struct extent_buffer * eb,int nr,u64 val)388 static inline void btrfs_set_node_blockptr(const struct extent_buffer *eb,
389 int nr, u64 val)
390 {
391 unsigned long ptr;
392
393 ptr = offsetof(struct btrfs_node, ptrs) +
394 sizeof(struct btrfs_key_ptr) * nr;
395 btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val);
396 }
397
btrfs_node_ptr_generation(const struct extent_buffer * eb,int nr)398 static inline u64 btrfs_node_ptr_generation(const struct extent_buffer *eb, int nr)
399 {
400 unsigned long ptr;
401
402 ptr = offsetof(struct btrfs_node, ptrs) +
403 sizeof(struct btrfs_key_ptr) * nr;
404 return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr);
405 }
406
btrfs_set_node_ptr_generation(const struct extent_buffer * eb,int nr,u64 val)407 static inline void btrfs_set_node_ptr_generation(const struct extent_buffer *eb,
408 int nr, u64 val)
409 {
410 unsigned long ptr;
411
412 ptr = offsetof(struct btrfs_node, ptrs) +
413 sizeof(struct btrfs_key_ptr) * nr;
414 btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val);
415 }
416
btrfs_node_key_ptr_offset(const struct extent_buffer * eb,int nr)417 static inline unsigned long btrfs_node_key_ptr_offset(const struct extent_buffer *eb, int nr)
418 {
419 return offsetof(struct btrfs_node, ptrs) +
420 sizeof(struct btrfs_key_ptr) * nr;
421 }
422
423 void btrfs_node_key(const struct extent_buffer *eb,
424 struct btrfs_disk_key *disk_key, int nr);
425
btrfs_set_node_key(const struct extent_buffer * eb,struct btrfs_disk_key * disk_key,int nr)426 static inline void btrfs_set_node_key(const struct extent_buffer *eb,
427 struct btrfs_disk_key *disk_key, int nr)
428 {
429 unsigned long ptr;
430
431 ptr = btrfs_node_key_ptr_offset(eb, nr);
432 write_eb_member(eb, (struct btrfs_key_ptr *)ptr,
433 struct btrfs_key_ptr, key, disk_key);
434 }
435
436 /* struct btrfs_item */
437 BTRFS_SETGET_FUNCS(raw_item_offset, struct btrfs_item, offset, 32);
438 BTRFS_SETGET_FUNCS(raw_item_size, struct btrfs_item, size, 32);
439 BTRFS_SETGET_STACK_FUNCS(stack_item_offset, struct btrfs_item, offset, 32);
440 BTRFS_SETGET_STACK_FUNCS(stack_item_size, struct btrfs_item, size, 32);
441
btrfs_item_nr_offset(const struct extent_buffer * eb,int nr)442 static inline unsigned long btrfs_item_nr_offset(const struct extent_buffer *eb, int nr)
443 {
444 return offsetof(struct btrfs_leaf, items) +
445 sizeof(struct btrfs_item) * nr;
446 }
447
btrfs_item_nr(const struct extent_buffer * eb,int nr)448 static inline struct btrfs_item *btrfs_item_nr(const struct extent_buffer *eb, int nr)
449 {
450 return (struct btrfs_item *)btrfs_item_nr_offset(eb, nr);
451 }
452
453 #define BTRFS_ITEM_SETGET_FUNCS(member) \
454 static inline u32 btrfs_item_##member(const struct extent_buffer *eb, int slot) \
455 { \
456 return btrfs_raw_item_##member(eb, btrfs_item_nr(eb, slot)); \
457 } \
458 static inline void btrfs_set_item_##member(const struct extent_buffer *eb, \
459 int slot, u32 val) \
460 { \
461 btrfs_set_raw_item_##member(eb, btrfs_item_nr(eb, slot), val); \
462 } \
463 static inline u32 btrfs_token_item_##member(struct btrfs_map_token *token, \
464 int slot) \
465 { \
466 struct btrfs_item *item = btrfs_item_nr(token->eb, slot); \
467 return btrfs_token_raw_item_##member(token, item); \
468 } \
469 static inline void btrfs_set_token_item_##member(struct btrfs_map_token *token, \
470 int slot, u32 val) \
471 { \
472 struct btrfs_item *item = btrfs_item_nr(token->eb, slot); \
473 btrfs_set_token_raw_item_##member(token, item, val); \
474 }
475
476 BTRFS_ITEM_SETGET_FUNCS(offset)
477 BTRFS_ITEM_SETGET_FUNCS(size);
478
btrfs_item_data_end(const struct extent_buffer * eb,int nr)479 static inline u32 btrfs_item_data_end(const struct extent_buffer *eb, int nr)
480 {
481 return btrfs_item_offset(eb, nr) + btrfs_item_size(eb, nr);
482 }
483
btrfs_item_key(const struct extent_buffer * eb,struct btrfs_disk_key * disk_key,int nr)484 static inline void btrfs_item_key(const struct extent_buffer *eb,
485 struct btrfs_disk_key *disk_key, int nr)
486 {
487 struct btrfs_item *item = btrfs_item_nr(eb, nr);
488
489 read_eb_member(eb, item, struct btrfs_item, key, disk_key);
490 }
491
btrfs_set_item_key(struct extent_buffer * eb,struct btrfs_disk_key * disk_key,int nr)492 static inline void btrfs_set_item_key(struct extent_buffer *eb,
493 struct btrfs_disk_key *disk_key, int nr)
494 {
495 struct btrfs_item *item = btrfs_item_nr(eb, nr);
496
497 write_eb_member(eb, item, struct btrfs_item, key, disk_key);
498 }
499
500 BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64);
501
502 /* struct btrfs_root_ref */
503 BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64);
504 BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64);
505 BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16);
506 BTRFS_SETGET_STACK_FUNCS(stack_root_ref_dirid, struct btrfs_root_ref, dirid, 64);
507 BTRFS_SETGET_STACK_FUNCS(stack_root_ref_sequence, struct btrfs_root_ref, sequence, 64);
508 BTRFS_SETGET_STACK_FUNCS(stack_root_ref_name_len, struct btrfs_root_ref, name_len, 16);
509
510 /* struct btrfs_dir_item */
511 BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16);
512 BTRFS_SETGET_FUNCS(dir_flags, struct btrfs_dir_item, type, 8);
513 BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16);
514 BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64);
515 BTRFS_SETGET_STACK_FUNCS(stack_dir_flags, struct btrfs_dir_item, type, 8);
516 BTRFS_SETGET_STACK_FUNCS(stack_dir_data_len, struct btrfs_dir_item, data_len, 16);
517 BTRFS_SETGET_STACK_FUNCS(stack_dir_name_len, struct btrfs_dir_item, name_len, 16);
518 BTRFS_SETGET_STACK_FUNCS(stack_dir_transid, struct btrfs_dir_item, transid, 64);
519
btrfs_dir_ftype(const struct extent_buffer * eb,const struct btrfs_dir_item * item)520 static inline u8 btrfs_dir_ftype(const struct extent_buffer *eb,
521 const struct btrfs_dir_item *item)
522 {
523 return btrfs_dir_flags_to_ftype(btrfs_dir_flags(eb, item));
524 }
525
btrfs_stack_dir_ftype(const struct btrfs_dir_item * item)526 static inline u8 btrfs_stack_dir_ftype(const struct btrfs_dir_item *item)
527 {
528 return btrfs_dir_flags_to_ftype(btrfs_stack_dir_flags(item));
529 }
530
btrfs_dir_item_key(const struct extent_buffer * eb,const struct btrfs_dir_item * item,struct btrfs_disk_key * key)531 static inline void btrfs_dir_item_key(const struct extent_buffer *eb,
532 const struct btrfs_dir_item *item,
533 struct btrfs_disk_key *key)
534 {
535 read_eb_member(eb, item, struct btrfs_dir_item, location, key);
536 }
537
btrfs_set_dir_item_key(struct extent_buffer * eb,struct btrfs_dir_item * item,const struct btrfs_disk_key * key)538 static inline void btrfs_set_dir_item_key(struct extent_buffer *eb,
539 struct btrfs_dir_item *item,
540 const struct btrfs_disk_key *key)
541 {
542 write_eb_member(eb, item, struct btrfs_dir_item, location, key);
543 }
544
545 BTRFS_SETGET_FUNCS(free_space_entries, struct btrfs_free_space_header,
546 num_entries, 64);
547 BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header,
548 num_bitmaps, 64);
549 BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header,
550 generation, 64);
551
btrfs_free_space_key(const struct extent_buffer * eb,const struct btrfs_free_space_header * h,struct btrfs_disk_key * key)552 static inline void btrfs_free_space_key(const struct extent_buffer *eb,
553 const struct btrfs_free_space_header *h,
554 struct btrfs_disk_key *key)
555 {
556 read_eb_member(eb, h, struct btrfs_free_space_header, location, key);
557 }
558
btrfs_set_free_space_key(struct extent_buffer * eb,struct btrfs_free_space_header * h,const struct btrfs_disk_key * key)559 static inline void btrfs_set_free_space_key(struct extent_buffer *eb,
560 struct btrfs_free_space_header *h,
561 const struct btrfs_disk_key *key)
562 {
563 write_eb_member(eb, h, struct btrfs_free_space_header, location, key);
564 }
565
566 /* struct btrfs_disk_key */
567 BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, objectid, 64);
568 BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64);
569 BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8);
570
571 #ifdef __LITTLE_ENDIAN
572
573 /*
574 * Optimized helpers for little-endian architectures where CPU and on-disk
575 * structures have the same endianness and we can skip conversions.
576 */
577
btrfs_disk_key_to_cpu(struct btrfs_key * cpu_key,const struct btrfs_disk_key * disk_key)578 static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu_key,
579 const struct btrfs_disk_key *disk_key)
580 {
581 memcpy(cpu_key, disk_key, sizeof(struct btrfs_key));
582 }
583
btrfs_cpu_key_to_disk(struct btrfs_disk_key * disk_key,const struct btrfs_key * cpu_key)584 static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk_key,
585 const struct btrfs_key *cpu_key)
586 {
587 memcpy(disk_key, cpu_key, sizeof(struct btrfs_key));
588 }
589
btrfs_node_key_to_cpu(const struct extent_buffer * eb,struct btrfs_key * cpu_key,int nr)590 static inline void btrfs_node_key_to_cpu(const struct extent_buffer *eb,
591 struct btrfs_key *cpu_key, int nr)
592 {
593 struct btrfs_disk_key *disk_key = (struct btrfs_disk_key *)cpu_key;
594
595 btrfs_node_key(eb, disk_key, nr);
596 }
597
btrfs_item_key_to_cpu(const struct extent_buffer * eb,struct btrfs_key * cpu_key,int nr)598 static inline void btrfs_item_key_to_cpu(const struct extent_buffer *eb,
599 struct btrfs_key *cpu_key, int nr)
600 {
601 struct btrfs_disk_key *disk_key = (struct btrfs_disk_key *)cpu_key;
602
603 btrfs_item_key(eb, disk_key, nr);
604 }
605
btrfs_dir_item_key_to_cpu(const struct extent_buffer * eb,const struct btrfs_dir_item * item,struct btrfs_key * cpu_key)606 static inline void btrfs_dir_item_key_to_cpu(const struct extent_buffer *eb,
607 const struct btrfs_dir_item *item,
608 struct btrfs_key *cpu_key)
609 {
610 struct btrfs_disk_key *disk_key = (struct btrfs_disk_key *)cpu_key;
611
612 btrfs_dir_item_key(eb, item, disk_key);
613 }
614
615 #else
616
btrfs_disk_key_to_cpu(struct btrfs_key * cpu,const struct btrfs_disk_key * disk)617 static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu,
618 const struct btrfs_disk_key *disk)
619 {
620 cpu->offset = le64_to_cpu(disk->offset);
621 cpu->type = disk->type;
622 cpu->objectid = le64_to_cpu(disk->objectid);
623 }
624
btrfs_cpu_key_to_disk(struct btrfs_disk_key * disk,const struct btrfs_key * cpu)625 static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk,
626 const struct btrfs_key *cpu)
627 {
628 disk->offset = cpu_to_le64(cpu->offset);
629 disk->type = cpu->type;
630 disk->objectid = cpu_to_le64(cpu->objectid);
631 }
632
btrfs_node_key_to_cpu(const struct extent_buffer * eb,struct btrfs_key * key,int nr)633 static inline void btrfs_node_key_to_cpu(const struct extent_buffer *eb,
634 struct btrfs_key *key, int nr)
635 {
636 struct btrfs_disk_key disk_key;
637
638 btrfs_node_key(eb, &disk_key, nr);
639 btrfs_disk_key_to_cpu(key, &disk_key);
640 }
641
btrfs_item_key_to_cpu(const struct extent_buffer * eb,struct btrfs_key * key,int nr)642 static inline void btrfs_item_key_to_cpu(const struct extent_buffer *eb,
643 struct btrfs_key *key, int nr)
644 {
645 struct btrfs_disk_key disk_key;
646
647 btrfs_item_key(eb, &disk_key, nr);
648 btrfs_disk_key_to_cpu(key, &disk_key);
649 }
650
btrfs_dir_item_key_to_cpu(const struct extent_buffer * eb,const struct btrfs_dir_item * item,struct btrfs_key * key)651 static inline void btrfs_dir_item_key_to_cpu(const struct extent_buffer *eb,
652 const struct btrfs_dir_item *item,
653 struct btrfs_key *key)
654 {
655 struct btrfs_disk_key disk_key;
656
657 btrfs_dir_item_key(eb, item, &disk_key);
658 btrfs_disk_key_to_cpu(key, &disk_key);
659 }
660
661 #endif
662
663 /* struct btrfs_header */
664 BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64);
665 BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, generation, 64);
666 BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64);
667 BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32);
668 BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64);
669 BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8);
670 BTRFS_SETGET_STACK_FUNCS(stack_header_generation, struct btrfs_header,
671 generation, 64);
672 BTRFS_SETGET_STACK_FUNCS(stack_header_owner, struct btrfs_header, owner, 64);
673 BTRFS_SETGET_STACK_FUNCS(stack_header_nritems, struct btrfs_header, nritems, 32);
674 BTRFS_SETGET_STACK_FUNCS(stack_header_bytenr, struct btrfs_header, bytenr, 64);
675
btrfs_header_flag(const struct extent_buffer * eb,u64 flag)676 static inline int btrfs_header_flag(const struct extent_buffer *eb, u64 flag)
677 {
678 return (btrfs_header_flags(eb) & flag) == flag;
679 }
680
btrfs_set_header_flag(struct extent_buffer * eb,u64 flag)681 static inline void btrfs_set_header_flag(struct extent_buffer *eb, u64 flag)
682 {
683 u64 flags = btrfs_header_flags(eb);
684
685 btrfs_set_header_flags(eb, flags | flag);
686 }
687
btrfs_clear_header_flag(struct extent_buffer * eb,u64 flag)688 static inline void btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag)
689 {
690 u64 flags = btrfs_header_flags(eb);
691
692 btrfs_set_header_flags(eb, flags & ~flag);
693 }
694
btrfs_header_backref_rev(const struct extent_buffer * eb)695 static inline int btrfs_header_backref_rev(const struct extent_buffer *eb)
696 {
697 u64 flags = btrfs_header_flags(eb);
698
699 return flags >> BTRFS_BACKREF_REV_SHIFT;
700 }
701
btrfs_set_header_backref_rev(struct extent_buffer * eb,int rev)702 static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb, int rev)
703 {
704 u64 flags = btrfs_header_flags(eb);
705
706 flags &= ~BTRFS_BACKREF_REV_MASK;
707 flags |= (u64)rev << BTRFS_BACKREF_REV_SHIFT;
708 btrfs_set_header_flags(eb, flags);
709 }
710
btrfs_is_leaf(const struct extent_buffer * eb)711 static inline int btrfs_is_leaf(const struct extent_buffer *eb)
712 {
713 return btrfs_header_level(eb) == 0;
714 }
715
716 /* struct btrfs_root_item */
717 BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, generation, 64);
718 BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32);
719 BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64);
720 BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8);
721
722 BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, generation, 64);
723 BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64);
724 BTRFS_SETGET_STACK_FUNCS(root_drop_level, struct btrfs_root_item, drop_level, 8);
725 BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8);
726 BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64);
727 BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32);
728 BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64);
729 BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64);
730 BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64);
731 BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item,
732 last_snapshot, 64);
733 BTRFS_SETGET_STACK_FUNCS(root_generation_v2, struct btrfs_root_item,
734 generation_v2, 64);
735 BTRFS_SETGET_STACK_FUNCS(root_ctransid, struct btrfs_root_item, ctransid, 64);
736 BTRFS_SETGET_STACK_FUNCS(root_otransid, struct btrfs_root_item, otransid, 64);
737 BTRFS_SETGET_STACK_FUNCS(root_stransid, struct btrfs_root_item, stransid, 64);
738 BTRFS_SETGET_STACK_FUNCS(root_rtransid, struct btrfs_root_item, rtransid, 64);
739
740 /* struct btrfs_root_backup */
741 BTRFS_SETGET_STACK_FUNCS(backup_tree_root, struct btrfs_root_backup,
742 tree_root, 64);
743 BTRFS_SETGET_STACK_FUNCS(backup_tree_root_gen, struct btrfs_root_backup,
744 tree_root_gen, 64);
745 BTRFS_SETGET_STACK_FUNCS(backup_tree_root_level, struct btrfs_root_backup,
746 tree_root_level, 8);
747
748 BTRFS_SETGET_STACK_FUNCS(backup_chunk_root, struct btrfs_root_backup,
749 chunk_root, 64);
750 BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_gen, struct btrfs_root_backup,
751 chunk_root_gen, 64);
752 BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_level, struct btrfs_root_backup,
753 chunk_root_level, 8);
754
755 BTRFS_SETGET_STACK_FUNCS(backup_extent_root, struct btrfs_root_backup,
756 extent_root, 64);
757 BTRFS_SETGET_STACK_FUNCS(backup_extent_root_gen, struct btrfs_root_backup,
758 extent_root_gen, 64);
759 BTRFS_SETGET_STACK_FUNCS(backup_extent_root_level, struct btrfs_root_backup,
760 extent_root_level, 8);
761
762 BTRFS_SETGET_STACK_FUNCS(backup_fs_root, struct btrfs_root_backup,
763 fs_root, 64);
764 BTRFS_SETGET_STACK_FUNCS(backup_fs_root_gen, struct btrfs_root_backup,
765 fs_root_gen, 64);
766 BTRFS_SETGET_STACK_FUNCS(backup_fs_root_level, struct btrfs_root_backup,
767 fs_root_level, 8);
768
769 BTRFS_SETGET_STACK_FUNCS(backup_dev_root, struct btrfs_root_backup,
770 dev_root, 64);
771 BTRFS_SETGET_STACK_FUNCS(backup_dev_root_gen, struct btrfs_root_backup,
772 dev_root_gen, 64);
773 BTRFS_SETGET_STACK_FUNCS(backup_dev_root_level, struct btrfs_root_backup,
774 dev_root_level, 8);
775
776 BTRFS_SETGET_STACK_FUNCS(backup_csum_root, struct btrfs_root_backup,
777 csum_root, 64);
778 BTRFS_SETGET_STACK_FUNCS(backup_csum_root_gen, struct btrfs_root_backup,
779 csum_root_gen, 64);
780 BTRFS_SETGET_STACK_FUNCS(backup_csum_root_level, struct btrfs_root_backup,
781 csum_root_level, 8);
782 BTRFS_SETGET_STACK_FUNCS(backup_total_bytes, struct btrfs_root_backup,
783 total_bytes, 64);
784 BTRFS_SETGET_STACK_FUNCS(backup_bytes_used, struct btrfs_root_backup,
785 bytes_used, 64);
786 BTRFS_SETGET_STACK_FUNCS(backup_num_devices, struct btrfs_root_backup,
787 num_devices, 64);
788
789 /* struct btrfs_balance_item */
790 BTRFS_SETGET_FUNCS(balance_flags, struct btrfs_balance_item, flags, 64);
791
btrfs_balance_data(const struct extent_buffer * eb,const struct btrfs_balance_item * bi,struct btrfs_disk_balance_args * ba)792 static inline void btrfs_balance_data(const struct extent_buffer *eb,
793 const struct btrfs_balance_item *bi,
794 struct btrfs_disk_balance_args *ba)
795 {
796 read_eb_member(eb, bi, struct btrfs_balance_item, data, ba);
797 }
798
btrfs_set_balance_data(struct extent_buffer * eb,struct btrfs_balance_item * bi,const struct btrfs_disk_balance_args * ba)799 static inline void btrfs_set_balance_data(struct extent_buffer *eb,
800 struct btrfs_balance_item *bi,
801 const struct btrfs_disk_balance_args *ba)
802 {
803 write_eb_member(eb, bi, struct btrfs_balance_item, data, ba);
804 }
805
btrfs_balance_meta(const struct extent_buffer * eb,const struct btrfs_balance_item * bi,struct btrfs_disk_balance_args * ba)806 static inline void btrfs_balance_meta(const struct extent_buffer *eb,
807 const struct btrfs_balance_item *bi,
808 struct btrfs_disk_balance_args *ba)
809 {
810 read_eb_member(eb, bi, struct btrfs_balance_item, meta, ba);
811 }
812
btrfs_set_balance_meta(struct extent_buffer * eb,struct btrfs_balance_item * bi,const struct btrfs_disk_balance_args * ba)813 static inline void btrfs_set_balance_meta(struct extent_buffer *eb,
814 struct btrfs_balance_item *bi,
815 const struct btrfs_disk_balance_args *ba)
816 {
817 write_eb_member(eb, bi, struct btrfs_balance_item, meta, ba);
818 }
819
btrfs_balance_sys(const struct extent_buffer * eb,const struct btrfs_balance_item * bi,struct btrfs_disk_balance_args * ba)820 static inline void btrfs_balance_sys(const struct extent_buffer *eb,
821 const struct btrfs_balance_item *bi,
822 struct btrfs_disk_balance_args *ba)
823 {
824 read_eb_member(eb, bi, struct btrfs_balance_item, sys, ba);
825 }
826
btrfs_set_balance_sys(struct extent_buffer * eb,struct btrfs_balance_item * bi,const struct btrfs_disk_balance_args * ba)827 static inline void btrfs_set_balance_sys(struct extent_buffer *eb,
828 struct btrfs_balance_item *bi,
829 const struct btrfs_disk_balance_args *ba)
830 {
831 write_eb_member(eb, bi, struct btrfs_balance_item, sys, ba);
832 }
833
btrfs_disk_balance_args_to_cpu(struct btrfs_balance_args * cpu,const struct btrfs_disk_balance_args * disk)834 static inline void btrfs_disk_balance_args_to_cpu(struct btrfs_balance_args *cpu,
835 const struct btrfs_disk_balance_args *disk)
836 {
837 memset(cpu, 0, sizeof(*cpu));
838
839 cpu->profiles = le64_to_cpu(disk->profiles);
840 cpu->usage = le64_to_cpu(disk->usage);
841 cpu->devid = le64_to_cpu(disk->devid);
842 cpu->pstart = le64_to_cpu(disk->pstart);
843 cpu->pend = le64_to_cpu(disk->pend);
844 cpu->vstart = le64_to_cpu(disk->vstart);
845 cpu->vend = le64_to_cpu(disk->vend);
846 cpu->target = le64_to_cpu(disk->target);
847 cpu->flags = le64_to_cpu(disk->flags);
848 cpu->limit = le64_to_cpu(disk->limit);
849 cpu->stripes_min = le32_to_cpu(disk->stripes_min);
850 cpu->stripes_max = le32_to_cpu(disk->stripes_max);
851 }
852
btrfs_cpu_balance_args_to_disk(struct btrfs_disk_balance_args * disk,const struct btrfs_balance_args * cpu)853 static inline void btrfs_cpu_balance_args_to_disk(
854 struct btrfs_disk_balance_args *disk,
855 const struct btrfs_balance_args *cpu)
856 {
857 memset(disk, 0, sizeof(*disk));
858
859 disk->profiles = cpu_to_le64(cpu->profiles);
860 disk->usage = cpu_to_le64(cpu->usage);
861 disk->devid = cpu_to_le64(cpu->devid);
862 disk->pstart = cpu_to_le64(cpu->pstart);
863 disk->pend = cpu_to_le64(cpu->pend);
864 disk->vstart = cpu_to_le64(cpu->vstart);
865 disk->vend = cpu_to_le64(cpu->vend);
866 disk->target = cpu_to_le64(cpu->target);
867 disk->flags = cpu_to_le64(cpu->flags);
868 disk->limit = cpu_to_le64(cpu->limit);
869 disk->stripes_min = cpu_to_le32(cpu->stripes_min);
870 disk->stripes_max = cpu_to_le32(cpu->stripes_max);
871 }
872
873 /* struct btrfs_super_block */
874 BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64);
875 BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64);
876 BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block,
877 generation, 64);
878 BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64);
879 BTRFS_SETGET_STACK_FUNCS(super_sys_array_size,
880 struct btrfs_super_block, sys_chunk_array_size, 32);
881 BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation,
882 struct btrfs_super_block, chunk_root_generation, 64);
883 BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block,
884 root_level, 8);
885 BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block,
886 chunk_root, 64);
887 BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block,
888 chunk_root_level, 8);
889 BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, log_root, 64);
890 BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block,
891 log_root_level, 8);
892 BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block,
893 total_bytes, 64);
894 BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block,
895 bytes_used, 64);
896 BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block,
897 sectorsize, 32);
898 BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block,
899 nodesize, 32);
900 BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block,
901 stripesize, 32);
902 BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block,
903 root_dir_objectid, 64);
904 BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block,
905 num_devices, 64);
906 BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block,
907 compat_flags, 64);
908 BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block,
909 compat_ro_flags, 64);
910 BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block,
911 incompat_flags, 64);
912 BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block,
913 csum_type, 16);
914 BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block,
915 cache_generation, 64);
916 BTRFS_SETGET_STACK_FUNCS(super_magic, struct btrfs_super_block, magic, 64);
917 BTRFS_SETGET_STACK_FUNCS(super_uuid_tree_generation, struct btrfs_super_block,
918 uuid_tree_generation, 64);
919 BTRFS_SETGET_STACK_FUNCS(super_nr_global_roots, struct btrfs_super_block,
920 nr_global_roots, 64);
921
922 /* struct btrfs_file_extent_item */
923 BTRFS_SETGET_STACK_FUNCS(stack_file_extent_type, struct btrfs_file_extent_item,
924 type, 8);
925 BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_bytenr,
926 struct btrfs_file_extent_item, disk_bytenr, 64);
927 BTRFS_SETGET_STACK_FUNCS(stack_file_extent_offset,
928 struct btrfs_file_extent_item, offset, 64);
929 BTRFS_SETGET_STACK_FUNCS(stack_file_extent_generation,
930 struct btrfs_file_extent_item, generation, 64);
931 BTRFS_SETGET_STACK_FUNCS(stack_file_extent_num_bytes,
932 struct btrfs_file_extent_item, num_bytes, 64);
933 BTRFS_SETGET_STACK_FUNCS(stack_file_extent_ram_bytes,
934 struct btrfs_file_extent_item, ram_bytes, 64);
935 BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_num_bytes,
936 struct btrfs_file_extent_item, disk_num_bytes, 64);
937 BTRFS_SETGET_STACK_FUNCS(stack_file_extent_compression,
938 struct btrfs_file_extent_item, compression, 8);
939
940
941 BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8);
942 BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item,
943 disk_bytenr, 64);
944 BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item,
945 generation, 64);
946 BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item,
947 disk_num_bytes, 64);
948 BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item,
949 offset, 64);
950 BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item,
951 num_bytes, 64);
952 BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item,
953 ram_bytes, 64);
954 BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item,
955 compression, 8);
956 BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item,
957 encryption, 8);
958 BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item,
959 other_encoding, 16);
960
961 /* btrfs_qgroup_status_item */
962 BTRFS_SETGET_FUNCS(qgroup_status_generation, struct btrfs_qgroup_status_item,
963 generation, 64);
964 BTRFS_SETGET_FUNCS(qgroup_status_version, struct btrfs_qgroup_status_item,
965 version, 64);
966 BTRFS_SETGET_FUNCS(qgroup_status_flags, struct btrfs_qgroup_status_item,
967 flags, 64);
968 BTRFS_SETGET_FUNCS(qgroup_status_rescan, struct btrfs_qgroup_status_item,
969 rescan, 64);
970
971 /* btrfs_qgroup_info_item */
972 BTRFS_SETGET_FUNCS(qgroup_info_generation, struct btrfs_qgroup_info_item,
973 generation, 64);
974 BTRFS_SETGET_FUNCS(qgroup_info_rfer, struct btrfs_qgroup_info_item, rfer, 64);
975 BTRFS_SETGET_FUNCS(qgroup_info_rfer_cmpr, struct btrfs_qgroup_info_item,
976 rfer_cmpr, 64);
977 BTRFS_SETGET_FUNCS(qgroup_info_excl, struct btrfs_qgroup_info_item, excl, 64);
978 BTRFS_SETGET_FUNCS(qgroup_info_excl_cmpr, struct btrfs_qgroup_info_item,
979 excl_cmpr, 64);
980
981 BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_generation,
982 struct btrfs_qgroup_info_item, generation, 64);
983 BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer, struct btrfs_qgroup_info_item,
984 rfer, 64);
985 BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer_cmpr,
986 struct btrfs_qgroup_info_item, rfer_cmpr, 64);
987 BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl, struct btrfs_qgroup_info_item,
988 excl, 64);
989 BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl_cmpr,
990 struct btrfs_qgroup_info_item, excl_cmpr, 64);
991
992 /* btrfs_qgroup_limit_item */
993 BTRFS_SETGET_FUNCS(qgroup_limit_flags, struct btrfs_qgroup_limit_item, flags, 64);
994 BTRFS_SETGET_FUNCS(qgroup_limit_max_rfer, struct btrfs_qgroup_limit_item,
995 max_rfer, 64);
996 BTRFS_SETGET_FUNCS(qgroup_limit_max_excl, struct btrfs_qgroup_limit_item,
997 max_excl, 64);
998 BTRFS_SETGET_FUNCS(qgroup_limit_rsv_rfer, struct btrfs_qgroup_limit_item,
999 rsv_rfer, 64);
1000 BTRFS_SETGET_FUNCS(qgroup_limit_rsv_excl, struct btrfs_qgroup_limit_item,
1001 rsv_excl, 64);
1002 BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_flags,
1003 struct btrfs_qgroup_limit_item, flags, 64);
1004 BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_max_rfer,
1005 struct btrfs_qgroup_limit_item, max_rfer, 64);
1006 BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_max_excl,
1007 struct btrfs_qgroup_limit_item, max_excl, 64);
1008 BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_rsv_rfer,
1009 struct btrfs_qgroup_limit_item, rsv_rfer, 64);
1010 BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_rsv_excl,
1011 struct btrfs_qgroup_limit_item, rsv_excl, 64);
1012
1013 /* btrfs_dev_replace_item */
1014 BTRFS_SETGET_FUNCS(dev_replace_src_devid,
1015 struct btrfs_dev_replace_item, src_devid, 64);
1016 BTRFS_SETGET_FUNCS(dev_replace_cont_reading_from_srcdev_mode,
1017 struct btrfs_dev_replace_item, cont_reading_from_srcdev_mode,
1018 64);
1019 BTRFS_SETGET_FUNCS(dev_replace_replace_state, struct btrfs_dev_replace_item,
1020 replace_state, 64);
1021 BTRFS_SETGET_FUNCS(dev_replace_time_started, struct btrfs_dev_replace_item,
1022 time_started, 64);
1023 BTRFS_SETGET_FUNCS(dev_replace_time_stopped, struct btrfs_dev_replace_item,
1024 time_stopped, 64);
1025 BTRFS_SETGET_FUNCS(dev_replace_num_write_errors, struct btrfs_dev_replace_item,
1026 num_write_errors, 64);
1027 BTRFS_SETGET_FUNCS(dev_replace_num_uncorrectable_read_errors,
1028 struct btrfs_dev_replace_item, num_uncorrectable_read_errors,
1029 64);
1030 BTRFS_SETGET_FUNCS(dev_replace_cursor_left, struct btrfs_dev_replace_item,
1031 cursor_left, 64);
1032 BTRFS_SETGET_FUNCS(dev_replace_cursor_right, struct btrfs_dev_replace_item,
1033 cursor_right, 64);
1034
1035 BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_src_devid,
1036 struct btrfs_dev_replace_item, src_devid, 64);
1037 BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cont_reading_from_srcdev_mode,
1038 struct btrfs_dev_replace_item,
1039 cont_reading_from_srcdev_mode, 64);
1040 BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_replace_state,
1041 struct btrfs_dev_replace_item, replace_state, 64);
1042 BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_started,
1043 struct btrfs_dev_replace_item, time_started, 64);
1044 BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_stopped,
1045 struct btrfs_dev_replace_item, time_stopped, 64);
1046 BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_write_errors,
1047 struct btrfs_dev_replace_item, num_write_errors, 64);
1048 BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_uncorrectable_read_errors,
1049 struct btrfs_dev_replace_item,
1050 num_uncorrectable_read_errors, 64);
1051 BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_left,
1052 struct btrfs_dev_replace_item, cursor_left, 64);
1053 BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_right,
1054 struct btrfs_dev_replace_item, cursor_right, 64);
1055
1056 /* btrfs_verity_descriptor_item */
1057 BTRFS_SETGET_FUNCS(verity_descriptor_encryption, struct btrfs_verity_descriptor_item,
1058 encryption, 8);
1059 BTRFS_SETGET_FUNCS(verity_descriptor_size, struct btrfs_verity_descriptor_item,
1060 size, 64);
1061 BTRFS_SETGET_STACK_FUNCS(stack_verity_descriptor_encryption,
1062 struct btrfs_verity_descriptor_item, encryption, 8);
1063 BTRFS_SETGET_STACK_FUNCS(stack_verity_descriptor_size,
1064 struct btrfs_verity_descriptor_item, size, 64);
1065
1066 /* Cast into the data area of the leaf. */
1067 #define btrfs_item_ptr(leaf, slot, type) \
1068 ((type *)(btrfs_item_nr_offset(leaf, 0) + btrfs_item_offset(leaf, slot)))
1069
1070 #define btrfs_item_ptr_offset(leaf, slot) \
1071 ((unsigned long)(btrfs_item_nr_offset(leaf, 0) + btrfs_item_offset(leaf, slot)))
1072
1073 #endif
1074