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