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