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-rw-r--r--fs/btrfs/ioctl.h502
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diff --git a/fs/btrfs/ioctl.h b/fs/btrfs/ioctl.h
deleted file mode 100644
index dabca9cc8c2e..000000000000
--- a/fs/btrfs/ioctl.h
+++ /dev/null
@@ -1,502 +0,0 @@
1/*
2 * Copyright (C) 2007 Oracle. All rights reserved.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public
6 * License v2 as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public
14 * License along with this program; if not, write to the
15 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
16 * Boston, MA 021110-1307, USA.
17 */
18
19#ifndef __IOCTL_
20#define __IOCTL_
21#include <linux/ioctl.h>
22
23#define BTRFS_IOCTL_MAGIC 0x94
24#define BTRFS_VOL_NAME_MAX 255
25
26/* this should be 4k */
27#define BTRFS_PATH_NAME_MAX 4087
28struct btrfs_ioctl_vol_args {
29 __s64 fd;
30 char name[BTRFS_PATH_NAME_MAX + 1];
31};
32
33#define BTRFS_DEVICE_PATH_NAME_MAX 1024
34
35#define BTRFS_SUBVOL_CREATE_ASYNC (1ULL << 0)
36#define BTRFS_SUBVOL_RDONLY (1ULL << 1)
37#define BTRFS_SUBVOL_QGROUP_INHERIT (1ULL << 2)
38#define BTRFS_FSID_SIZE 16
39#define BTRFS_UUID_SIZE 16
40
41#define BTRFS_QGROUP_INHERIT_SET_LIMITS (1ULL << 0)
42
43struct btrfs_qgroup_limit {
44 __u64 flags;
45 __u64 max_rfer;
46 __u64 max_excl;
47 __u64 rsv_rfer;
48 __u64 rsv_excl;
49};
50
51struct btrfs_qgroup_inherit {
52 __u64 flags;
53 __u64 num_qgroups;
54 __u64 num_ref_copies;
55 __u64 num_excl_copies;
56 struct btrfs_qgroup_limit lim;
57 __u64 qgroups[0];
58};
59
60struct btrfs_ioctl_qgroup_limit_args {
61 __u64 qgroupid;
62 struct btrfs_qgroup_limit lim;
63};
64
65#define BTRFS_SUBVOL_NAME_MAX 4039
66struct btrfs_ioctl_vol_args_v2 {
67 __s64 fd;
68 __u64 transid;
69 __u64 flags;
70 union {
71 struct {
72 __u64 size;
73 struct btrfs_qgroup_inherit __user *qgroup_inherit;
74 };
75 __u64 unused[4];
76 };
77 char name[BTRFS_SUBVOL_NAME_MAX + 1];
78};
79
80/*
81 * structure to report errors and progress to userspace, either as a
82 * result of a finished scrub, a canceled scrub or a progress inquiry
83 */
84struct btrfs_scrub_progress {
85 __u64 data_extents_scrubbed; /* # of data extents scrubbed */
86 __u64 tree_extents_scrubbed; /* # of tree extents scrubbed */
87 __u64 data_bytes_scrubbed; /* # of data bytes scrubbed */
88 __u64 tree_bytes_scrubbed; /* # of tree bytes scrubbed */
89 __u64 read_errors; /* # of read errors encountered (EIO) */
90 __u64 csum_errors; /* # of failed csum checks */
91 __u64 verify_errors; /* # of occurences, where the metadata
92 * of a tree block did not match the
93 * expected values, like generation or
94 * logical */
95 __u64 no_csum; /* # of 4k data block for which no csum
96 * is present, probably the result of
97 * data written with nodatasum */
98 __u64 csum_discards; /* # of csum for which no data was found
99 * in the extent tree. */
100 __u64 super_errors; /* # of bad super blocks encountered */
101 __u64 malloc_errors; /* # of internal kmalloc errors. These
102 * will likely cause an incomplete
103 * scrub */
104 __u64 uncorrectable_errors; /* # of errors where either no intact
105 * copy was found or the writeback
106 * failed */
107 __u64 corrected_errors; /* # of errors corrected */
108 __u64 last_physical; /* last physical address scrubbed. In
109 * case a scrub was aborted, this can
110 * be used to restart the scrub */
111 __u64 unverified_errors; /* # of occurences where a read for a
112 * full (64k) bio failed, but the re-
113 * check succeeded for each 4k piece.
114 * Intermittent error. */
115};
116
117#define BTRFS_SCRUB_READONLY 1
118struct btrfs_ioctl_scrub_args {
119 __u64 devid; /* in */
120 __u64 start; /* in */
121 __u64 end; /* in */
122 __u64 flags; /* in */
123 struct btrfs_scrub_progress progress; /* out */
124 /* pad to 1k */
125 __u64 unused[(1024-32-sizeof(struct btrfs_scrub_progress))/8];
126};
127
128#define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_ALWAYS 0
129#define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_AVOID 1
130struct btrfs_ioctl_dev_replace_start_params {
131 __u64 srcdevid; /* in, if 0, use srcdev_name instead */
132 __u64 cont_reading_from_srcdev_mode; /* in, see #define
133 * above */
134 __u8 srcdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1]; /* in */
135 __u8 tgtdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1]; /* in */
136};
137
138#define BTRFS_IOCTL_DEV_REPLACE_STATE_NEVER_STARTED 0
139#define BTRFS_IOCTL_DEV_REPLACE_STATE_STARTED 1
140#define BTRFS_IOCTL_DEV_REPLACE_STATE_FINISHED 2
141#define BTRFS_IOCTL_DEV_REPLACE_STATE_CANCELED 3
142#define BTRFS_IOCTL_DEV_REPLACE_STATE_SUSPENDED 4
143struct btrfs_ioctl_dev_replace_status_params {
144 __u64 replace_state; /* out, see #define above */
145 __u64 progress_1000; /* out, 0 <= x <= 1000 */
146 __u64 time_started; /* out, seconds since 1-Jan-1970 */
147 __u64 time_stopped; /* out, seconds since 1-Jan-1970 */
148 __u64 num_write_errors; /* out */
149 __u64 num_uncorrectable_read_errors; /* out */
150};
151
152#define BTRFS_IOCTL_DEV_REPLACE_CMD_START 0
153#define BTRFS_IOCTL_DEV_REPLACE_CMD_STATUS 1
154#define BTRFS_IOCTL_DEV_REPLACE_CMD_CANCEL 2
155#define BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_ERROR 0
156#define BTRFS_IOCTL_DEV_REPLACE_RESULT_NOT_STARTED 1
157#define BTRFS_IOCTL_DEV_REPLACE_RESULT_ALREADY_STARTED 2
158struct btrfs_ioctl_dev_replace_args {
159 __u64 cmd; /* in */
160 __u64 result; /* out */
161
162 union {
163 struct btrfs_ioctl_dev_replace_start_params start;
164 struct btrfs_ioctl_dev_replace_status_params status;
165 }; /* in/out */
166
167 __u64 spare[64];
168};
169
170struct btrfs_ioctl_dev_info_args {
171 __u64 devid; /* in/out */
172 __u8 uuid[BTRFS_UUID_SIZE]; /* in/out */
173 __u64 bytes_used; /* out */
174 __u64 total_bytes; /* out */
175 __u64 unused[379]; /* pad to 4k */
176 __u8 path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */
177};
178
179struct btrfs_ioctl_fs_info_args {
180 __u64 max_id; /* out */
181 __u64 num_devices; /* out */
182 __u8 fsid[BTRFS_FSID_SIZE]; /* out */
183 __u64 reserved[124]; /* pad to 1k */
184};
185
186/* balance control ioctl modes */
187#define BTRFS_BALANCE_CTL_PAUSE 1
188#define BTRFS_BALANCE_CTL_CANCEL 2
189
190/*
191 * this is packed, because it should be exactly the same as its disk
192 * byte order counterpart (struct btrfs_disk_balance_args)
193 */
194struct btrfs_balance_args {
195 __u64 profiles;
196 __u64 usage;
197 __u64 devid;
198 __u64 pstart;
199 __u64 pend;
200 __u64 vstart;
201 __u64 vend;
202
203 __u64 target;
204
205 __u64 flags;
206
207 __u64 unused[8];
208} __attribute__ ((__packed__));
209
210/* report balance progress to userspace */
211struct btrfs_balance_progress {
212 __u64 expected; /* estimated # of chunks that will be
213 * relocated to fulfill the request */
214 __u64 considered; /* # of chunks we have considered so far */
215 __u64 completed; /* # of chunks relocated so far */
216};
217
218#define BTRFS_BALANCE_STATE_RUNNING (1ULL << 0)
219#define BTRFS_BALANCE_STATE_PAUSE_REQ (1ULL << 1)
220#define BTRFS_BALANCE_STATE_CANCEL_REQ (1ULL << 2)
221
222struct btrfs_ioctl_balance_args {
223 __u64 flags; /* in/out */
224 __u64 state; /* out */
225
226 struct btrfs_balance_args data; /* in/out */
227 struct btrfs_balance_args meta; /* in/out */
228 struct btrfs_balance_args sys; /* in/out */
229
230 struct btrfs_balance_progress stat; /* out */
231
232 __u64 unused[72]; /* pad to 1k */
233};
234
235#define BTRFS_INO_LOOKUP_PATH_MAX 4080
236struct btrfs_ioctl_ino_lookup_args {
237 __u64 treeid;
238 __u64 objectid;
239 char name[BTRFS_INO_LOOKUP_PATH_MAX];
240};
241
242struct btrfs_ioctl_search_key {
243 /* which root are we searching. 0 is the tree of tree roots */
244 __u64 tree_id;
245
246 /* keys returned will be >= min and <= max */
247 __u64 min_objectid;
248 __u64 max_objectid;
249
250 /* keys returned will be >= min and <= max */
251 __u64 min_offset;
252 __u64 max_offset;
253
254 /* max and min transids to search for */
255 __u64 min_transid;
256 __u64 max_transid;
257
258 /* keys returned will be >= min and <= max */
259 __u32 min_type;
260 __u32 max_type;
261
262 /*
263 * how many items did userland ask for, and how many are we
264 * returning
265 */
266 __u32 nr_items;
267
268 /* align to 64 bits */
269 __u32 unused;
270
271 /* some extra for later */
272 __u64 unused1;
273 __u64 unused2;
274 __u64 unused3;
275 __u64 unused4;
276};
277
278struct btrfs_ioctl_search_header {
279 __u64 transid;
280 __u64 objectid;
281 __u64 offset;
282 __u32 type;
283 __u32 len;
284};
285
286#define BTRFS_SEARCH_ARGS_BUFSIZE (4096 - sizeof(struct btrfs_ioctl_search_key))
287/*
288 * the buf is an array of search headers where
289 * each header is followed by the actual item
290 * the type field is expanded to 32 bits for alignment
291 */
292struct btrfs_ioctl_search_args {
293 struct btrfs_ioctl_search_key key;
294 char buf[BTRFS_SEARCH_ARGS_BUFSIZE];
295};
296
297struct btrfs_ioctl_clone_range_args {
298 __s64 src_fd;
299 __u64 src_offset, src_length;
300 __u64 dest_offset;
301};
302
303/* flags for the defrag range ioctl */
304#define BTRFS_DEFRAG_RANGE_COMPRESS 1
305#define BTRFS_DEFRAG_RANGE_START_IO 2
306
307struct btrfs_ioctl_space_info {
308 __u64 flags;
309 __u64 total_bytes;
310 __u64 used_bytes;
311};
312
313struct btrfs_ioctl_space_args {
314 __u64 space_slots;
315 __u64 total_spaces;
316 struct btrfs_ioctl_space_info spaces[0];
317};
318
319struct btrfs_data_container {
320 __u32 bytes_left; /* out -- bytes not needed to deliver output */
321 __u32 bytes_missing; /* out -- additional bytes needed for result */
322 __u32 elem_cnt; /* out */
323 __u32 elem_missed; /* out */
324 __u64 val[0]; /* out */
325};
326
327struct btrfs_ioctl_ino_path_args {
328 __u64 inum; /* in */
329 __u64 size; /* in */
330 __u64 reserved[4];
331 /* struct btrfs_data_container *fspath; out */
332 __u64 fspath; /* out */
333};
334
335struct btrfs_ioctl_logical_ino_args {
336 __u64 logical; /* in */
337 __u64 size; /* in */
338 __u64 reserved[4];
339 /* struct btrfs_data_container *inodes; out */
340 __u64 inodes;
341};
342
343enum btrfs_dev_stat_values {
344 /* disk I/O failure stats */
345 BTRFS_DEV_STAT_WRITE_ERRS, /* EIO or EREMOTEIO from lower layers */
346 BTRFS_DEV_STAT_READ_ERRS, /* EIO or EREMOTEIO from lower layers */
347 BTRFS_DEV_STAT_FLUSH_ERRS, /* EIO or EREMOTEIO from lower layers */
348
349 /* stats for indirect indications for I/O failures */
350 BTRFS_DEV_STAT_CORRUPTION_ERRS, /* checksum error, bytenr error or
351 * contents is illegal: this is an
352 * indication that the block was damaged
353 * during read or write, or written to
354 * wrong location or read from wrong
355 * location */
356 BTRFS_DEV_STAT_GENERATION_ERRS, /* an indication that blocks have not
357 * been written */
358
359 BTRFS_DEV_STAT_VALUES_MAX
360};
361
362/* Reset statistics after reading; needs SYS_ADMIN capability */
363#define BTRFS_DEV_STATS_RESET (1ULL << 0)
364
365struct btrfs_ioctl_get_dev_stats {
366 __u64 devid; /* in */
367 __u64 nr_items; /* in/out */
368 __u64 flags; /* in/out */
369
370 /* out values: */
371 __u64 values[BTRFS_DEV_STAT_VALUES_MAX];
372
373 __u64 unused[128 - 2 - BTRFS_DEV_STAT_VALUES_MAX]; /* pad to 1k */
374};
375
376#define BTRFS_QUOTA_CTL_ENABLE 1
377#define BTRFS_QUOTA_CTL_DISABLE 2
378#define BTRFS_QUOTA_CTL_RESCAN 3
379struct btrfs_ioctl_quota_ctl_args {
380 __u64 cmd;
381 __u64 status;
382};
383
384struct btrfs_ioctl_qgroup_assign_args {
385 __u64 assign;
386 __u64 src;
387 __u64 dst;
388};
389
390struct btrfs_ioctl_qgroup_create_args {
391 __u64 create;
392 __u64 qgroupid;
393};
394struct btrfs_ioctl_timespec {
395 __u64 sec;
396 __u32 nsec;
397};
398
399struct btrfs_ioctl_received_subvol_args {
400 char uuid[BTRFS_UUID_SIZE]; /* in */
401 __u64 stransid; /* in */
402 __u64 rtransid; /* out */
403 struct btrfs_ioctl_timespec stime; /* in */
404 struct btrfs_ioctl_timespec rtime; /* out */
405 __u64 flags; /* in */
406 __u64 reserved[16]; /* in */
407};
408
409struct btrfs_ioctl_send_args {
410 __s64 send_fd; /* in */
411 __u64 clone_sources_count; /* in */
412 __u64 __user *clone_sources; /* in */
413 __u64 parent_root; /* in */
414 __u64 flags; /* in */
415 __u64 reserved[4]; /* in */
416};
417
418#define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \
419 struct btrfs_ioctl_vol_args)
420#define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \
421 struct btrfs_ioctl_vol_args)
422#define BTRFS_IOC_RESIZE _IOW(BTRFS_IOCTL_MAGIC, 3, \
423 struct btrfs_ioctl_vol_args)
424#define BTRFS_IOC_SCAN_DEV _IOW(BTRFS_IOCTL_MAGIC, 4, \
425 struct btrfs_ioctl_vol_args)
426/* trans start and trans end are dangerous, and only for
427 * use by applications that know how to avoid the
428 * resulting deadlocks
429 */
430#define BTRFS_IOC_TRANS_START _IO(BTRFS_IOCTL_MAGIC, 6)
431#define BTRFS_IOC_TRANS_END _IO(BTRFS_IOCTL_MAGIC, 7)
432#define BTRFS_IOC_SYNC _IO(BTRFS_IOCTL_MAGIC, 8)
433
434#define BTRFS_IOC_CLONE _IOW(BTRFS_IOCTL_MAGIC, 9, int)
435#define BTRFS_IOC_ADD_DEV _IOW(BTRFS_IOCTL_MAGIC, 10, \
436 struct btrfs_ioctl_vol_args)
437#define BTRFS_IOC_RM_DEV _IOW(BTRFS_IOCTL_MAGIC, 11, \
438 struct btrfs_ioctl_vol_args)
439#define BTRFS_IOC_BALANCE _IOW(BTRFS_IOCTL_MAGIC, 12, \
440 struct btrfs_ioctl_vol_args)
441
442#define BTRFS_IOC_CLONE_RANGE _IOW(BTRFS_IOCTL_MAGIC, 13, \
443 struct btrfs_ioctl_clone_range_args)
444
445#define BTRFS_IOC_SUBVOL_CREATE _IOW(BTRFS_IOCTL_MAGIC, 14, \
446 struct btrfs_ioctl_vol_args)
447#define BTRFS_IOC_SNAP_DESTROY _IOW(BTRFS_IOCTL_MAGIC, 15, \
448 struct btrfs_ioctl_vol_args)
449#define BTRFS_IOC_DEFRAG_RANGE _IOW(BTRFS_IOCTL_MAGIC, 16, \
450 struct btrfs_ioctl_defrag_range_args)
451#define BTRFS_IOC_TREE_SEARCH _IOWR(BTRFS_IOCTL_MAGIC, 17, \
452 struct btrfs_ioctl_search_args)
453#define BTRFS_IOC_INO_LOOKUP _IOWR(BTRFS_IOCTL_MAGIC, 18, \
454 struct btrfs_ioctl_ino_lookup_args)
455#define BTRFS_IOC_DEFAULT_SUBVOL _IOW(BTRFS_IOCTL_MAGIC, 19, u64)
456#define BTRFS_IOC_SPACE_INFO _IOWR(BTRFS_IOCTL_MAGIC, 20, \
457 struct btrfs_ioctl_space_args)
458#define BTRFS_IOC_START_SYNC _IOR(BTRFS_IOCTL_MAGIC, 24, __u64)
459#define BTRFS_IOC_WAIT_SYNC _IOW(BTRFS_IOCTL_MAGIC, 22, __u64)
460#define BTRFS_IOC_SNAP_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 23, \
461 struct btrfs_ioctl_vol_args_v2)
462#define BTRFS_IOC_SUBVOL_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 24, \
463 struct btrfs_ioctl_vol_args_v2)
464#define BTRFS_IOC_SUBVOL_GETFLAGS _IOR(BTRFS_IOCTL_MAGIC, 25, __u64)
465#define BTRFS_IOC_SUBVOL_SETFLAGS _IOW(BTRFS_IOCTL_MAGIC, 26, __u64)
466#define BTRFS_IOC_SCRUB _IOWR(BTRFS_IOCTL_MAGIC, 27, \
467 struct btrfs_ioctl_scrub_args)
468#define BTRFS_IOC_SCRUB_CANCEL _IO(BTRFS_IOCTL_MAGIC, 28)
469#define BTRFS_IOC_SCRUB_PROGRESS _IOWR(BTRFS_IOCTL_MAGIC, 29, \
470 struct btrfs_ioctl_scrub_args)
471#define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \
472 struct btrfs_ioctl_dev_info_args)
473#define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \
474 struct btrfs_ioctl_fs_info_args)
475#define BTRFS_IOC_BALANCE_V2 _IOWR(BTRFS_IOCTL_MAGIC, 32, \
476 struct btrfs_ioctl_balance_args)
477#define BTRFS_IOC_BALANCE_CTL _IOW(BTRFS_IOCTL_MAGIC, 33, int)
478#define BTRFS_IOC_BALANCE_PROGRESS _IOR(BTRFS_IOCTL_MAGIC, 34, \
479 struct btrfs_ioctl_balance_args)
480#define BTRFS_IOC_INO_PATHS _IOWR(BTRFS_IOCTL_MAGIC, 35, \
481 struct btrfs_ioctl_ino_path_args)
482#define BTRFS_IOC_LOGICAL_INO _IOWR(BTRFS_IOCTL_MAGIC, 36, \
483 struct btrfs_ioctl_ino_path_args)
484#define BTRFS_IOC_SET_RECEIVED_SUBVOL _IOWR(BTRFS_IOCTL_MAGIC, 37, \
485 struct btrfs_ioctl_received_subvol_args)
486#define BTRFS_IOC_SEND _IOW(BTRFS_IOCTL_MAGIC, 38, struct btrfs_ioctl_send_args)
487#define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \
488 struct btrfs_ioctl_vol_args)
489#define BTRFS_IOC_QUOTA_CTL _IOWR(BTRFS_IOCTL_MAGIC, 40, \
490 struct btrfs_ioctl_quota_ctl_args)
491#define BTRFS_IOC_QGROUP_ASSIGN _IOW(BTRFS_IOCTL_MAGIC, 41, \
492 struct btrfs_ioctl_qgroup_assign_args)
493#define BTRFS_IOC_QGROUP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 42, \
494 struct btrfs_ioctl_qgroup_create_args)
495#define BTRFS_IOC_QGROUP_LIMIT _IOR(BTRFS_IOCTL_MAGIC, 43, \
496 struct btrfs_ioctl_qgroup_limit_args)
497#define BTRFS_IOC_GET_DEV_STATS _IOWR(BTRFS_IOCTL_MAGIC, 52, \
498 struct btrfs_ioctl_get_dev_stats)
499#define BTRFS_IOC_DEV_REPLACE _IOWR(BTRFS_IOCTL_MAGIC, 53, \
500 struct btrfs_ioctl_dev_replace_args)
501
502#endif
generated by cgit v1.2.2 (git 2.25.0) at 2025-10-29 23:13:50 -0400