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Merge branch 'pci/resource' into next
[deliverable/linux.git] / drivers / staging / lustre / lustre / include / lustre / lustre_user.h
1 /*
2 * GPL HEADER START
3 *
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
19 *
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
22 * have any questions.
23 *
24 * GPL HEADER END
25 */
26 /*
27 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
29 *
30 * Copyright (c) 2010, 2012, Intel Corporation.
31 */
32 /*
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
35 *
36 * lustre/include/lustre/lustre_user.h
37 *
38 * Lustre public user-space interface definitions.
39 */
40
41 #ifndef _LUSTRE_USER_H
42 #define _LUSTRE_USER_H
43
44 /** \defgroup lustreuser lustreuser
45 *
46 * @{
47 */
48
49 #include <lustre/ll_fiemap.h>
50 #include <linux/lustre_user.h>
51
52 /* for statfs() */
53 #define LL_SUPER_MAGIC 0x0BD00BD0
54
55 #ifndef FSFILT_IOC_GETFLAGS
56 #define FSFILT_IOC_GETFLAGS _IOR('f', 1, long)
57 #define FSFILT_IOC_SETFLAGS _IOW('f', 2, long)
58 #define FSFILT_IOC_GETVERSION _IOR('f', 3, long)
59 #define FSFILT_IOC_SETVERSION _IOW('f', 4, long)
60 #define FSFILT_IOC_GETVERSION_OLD _IOR('v', 1, long)
61 #define FSFILT_IOC_SETVERSION_OLD _IOW('v', 2, long)
62 #define FSFILT_IOC_FIEMAP _IOWR('f', 11, struct ll_user_fiemap)
63 #endif
64
65 /* FIEMAP flags supported by Lustre */
66 #define LUSTRE_FIEMAP_FLAGS_COMPAT (FIEMAP_FLAG_SYNC | FIEMAP_FLAG_DEVICE_ORDER)
67
68 enum obd_statfs_state {
69 OS_STATE_DEGRADED = 0x00000001, /**< RAID degraded/rebuilding */
70 OS_STATE_READONLY = 0x00000002, /**< filesystem is read-only */
71 OS_STATE_RDONLY_1 = 0x00000004, /**< obsolete 1.6, was EROFS=30 */
72 OS_STATE_RDONLY_2 = 0x00000008, /**< obsolete 1.6, was EROFS=30 */
73 OS_STATE_RDONLY_3 = 0x00000010, /**< obsolete 1.6, was EROFS=30 */
74 };
75
76 struct obd_statfs {
77 __u64 os_type;
78 __u64 os_blocks;
79 __u64 os_bfree;
80 __u64 os_bavail;
81 __u64 os_files;
82 __u64 os_ffree;
83 __u8 os_fsid[40];
84 __u32 os_bsize;
85 __u32 os_namelen;
86 __u64 os_maxbytes;
87 __u32 os_state; /**< obd_statfs_state OS_STATE_* flag */
88 __u32 os_fprecreated; /* objs available now to the caller */
89 /* used in QoS code to find preferred
90 * OSTs */
91 __u32 os_spare2;
92 __u32 os_spare3;
93 __u32 os_spare4;
94 __u32 os_spare5;
95 __u32 os_spare6;
96 __u32 os_spare7;
97 __u32 os_spare8;
98 __u32 os_spare9;
99 };
100
101 /**
102 * File IDentifier.
103 *
104 * FID is a cluster-wide unique identifier of a file or an object (stripe).
105 * FIDs are never reused.
106 **/
107 struct lu_fid {
108 /**
109 * FID sequence. Sequence is a unit of migration: all files (objects)
110 * with FIDs from a given sequence are stored on the same server.
111 * Lustre should support 2^64 objects, so even if each sequence
112 * has only a single object we can still enumerate 2^64 objects.
113 **/
114 __u64 f_seq;
115 /* FID number within sequence. */
116 __u32 f_oid;
117 /**
118 * FID version, used to distinguish different versions (in the sense
119 * of snapshots, etc.) of the same file system object. Not currently
120 * used.
121 **/
122 __u32 f_ver;
123 };
124
125 struct filter_fid {
126 struct lu_fid ff_parent; /* ff_parent.f_ver == file stripe number */
127 };
128
129 /* keep this one for compatibility */
130 struct filter_fid_old {
131 struct lu_fid ff_parent;
132 __u64 ff_objid;
133 __u64 ff_seq;
134 };
135
136 /* Userspace should treat lu_fid as opaque, and only use the following methods
137 * to print or parse them. Other functions (e.g. compare, swab) could be moved
138 * here from lustre_idl.h if needed. */
139 typedef struct lu_fid lustre_fid;
140
141 /**
142 * Following struct for object attributes, that will be kept inode's EA.
143 * Introduced in 2.0 release (please see b15993, for details)
144 * Added to all objects since Lustre 2.4 as contains self FID
145 */
146 struct lustre_mdt_attrs {
147 /**
148 * Bitfield for supported data in this structure. From enum lma_compat.
149 * lma_self_fid and lma_flags are always available.
150 */
151 __u32 lma_compat;
152 /**
153 * Per-file incompat feature list. Lustre version should support all
154 * flags set in this field. The supported feature mask is available in
155 * LMA_INCOMPAT_SUPP.
156 */
157 __u32 lma_incompat;
158 /** FID of this inode */
159 struct lu_fid lma_self_fid;
160 };
161
162 /**
163 * Prior to 2.4, the LMA structure also included SOM attributes which has since
164 * been moved to a dedicated xattr
165 * lma_flags was also removed because of lma_compat/incompat fields.
166 */
167 #define LMA_OLD_SIZE (sizeof(struct lustre_mdt_attrs) + 5 * sizeof(__u64))
168
169 /**
170 * OST object IDentifier.
171 */
172 struct ost_id {
173 union {
174 struct ostid {
175 __u64 oi_id;
176 __u64 oi_seq;
177 } oi;
178 struct lu_fid oi_fid;
179 };
180 };
181
182 #define DOSTID LPX64":"LPU64
183 #define POSTID(oi) ostid_seq(oi), ostid_id(oi)
184
185 /*
186 * The ioctl naming rules:
187 * LL_* - works on the currently opened filehandle instead of parent dir
188 * *_OBD_* - gets data for both OSC or MDC (LOV, LMV indirectly)
189 * *_MDC_* - gets/sets data related to MDC
190 * *_LOV_* - gets/sets data related to OSC/LOV
191 * *FILE* - called on parent dir and passes in a filename
192 * *STRIPE* - set/get lov_user_md
193 * *INFO - set/get lov_user_mds_data
194 */
195 /* see <lustre_lib.h> for ioctl numberss 101-150 */
196 #define LL_IOC_GETFLAGS _IOR ('f', 151, long)
197 #define LL_IOC_SETFLAGS _IOW ('f', 152, long)
198 #define LL_IOC_CLRFLAGS _IOW ('f', 153, long)
199 /* LL_IOC_LOV_SETSTRIPE: See also OBD_IOC_LOV_SETSTRIPE */
200 #define LL_IOC_LOV_SETSTRIPE _IOW ('f', 154, long)
201 /* LL_IOC_LOV_GETSTRIPE: See also OBD_IOC_LOV_GETSTRIPE */
202 #define LL_IOC_LOV_GETSTRIPE _IOW ('f', 155, long)
203 /* LL_IOC_LOV_SETEA: See also OBD_IOC_LOV_SETEA */
204 #define LL_IOC_LOV_SETEA _IOW ('f', 156, long)
205 #define LL_IOC_RECREATE_OBJ _IOW ('f', 157, long)
206 #define LL_IOC_RECREATE_FID _IOW ('f', 157, struct lu_fid)
207 #define LL_IOC_GROUP_LOCK _IOW ('f', 158, long)
208 #define LL_IOC_GROUP_UNLOCK _IOW ('f', 159, long)
209 /* LL_IOC_QUOTACHECK: See also OBD_IOC_QUOTACHECK */
210 #define LL_IOC_QUOTACHECK _IOW ('f', 160, int)
211 /* LL_IOC_POLL_QUOTACHECK: See also OBD_IOC_POLL_QUOTACHECK */
212 #define LL_IOC_POLL_QUOTACHECK _IOR ('f', 161, struct if_quotacheck *)
213 /* LL_IOC_QUOTACTL: See also OBD_IOC_QUOTACTL */
214 #define LL_IOC_QUOTACTL _IOWR('f', 162, struct if_quotactl)
215 #define IOC_OBD_STATFS _IOWR('f', 164, struct obd_statfs *)
216 #define IOC_LOV_GETINFO _IOWR('f', 165, struct lov_user_mds_data *)
217 #define LL_IOC_FLUSHCTX _IOW ('f', 166, long)
218 #define LL_IOC_RMTACL _IOW ('f', 167, long)
219 #define LL_IOC_GETOBDCOUNT _IOR ('f', 168, long)
220 #define LL_IOC_LLOOP_ATTACH _IOWR('f', 169, long)
221 #define LL_IOC_LLOOP_DETACH _IOWR('f', 170, long)
222 #define LL_IOC_LLOOP_INFO _IOWR('f', 171, struct lu_fid)
223 #define LL_IOC_LLOOP_DETACH_BYDEV _IOWR('f', 172, long)
224 #define LL_IOC_PATH2FID _IOR ('f', 173, long)
225 #define LL_IOC_GET_CONNECT_FLAGS _IOWR('f', 174, __u64 *)
226 #define LL_IOC_GET_MDTIDX _IOR ('f', 175, int)
227
228 /* see <lustre_lib.h> for ioctl numbers 177-210 */
229
230 #define LL_IOC_HSM_STATE_GET _IOR('f', 211, struct hsm_user_state)
231 #define LL_IOC_HSM_STATE_SET _IOW('f', 212, struct hsm_state_set)
232 #define LL_IOC_HSM_CT_START _IOW('f', 213, struct lustre_kernelcomm)
233 #define LL_IOC_HSM_COPY_START _IOW('f', 214, struct hsm_copy *)
234 #define LL_IOC_HSM_COPY_END _IOW('f', 215, struct hsm_copy *)
235 #define LL_IOC_HSM_PROGRESS _IOW('f', 216, struct hsm_user_request)
236 #define LL_IOC_HSM_REQUEST _IOW('f', 217, struct hsm_user_request)
237 #define LL_IOC_DATA_VERSION _IOR('f', 218, struct ioc_data_version)
238 #define LL_IOC_LOV_SWAP_LAYOUTS _IOW('f', 219, \
239 struct lustre_swap_layouts)
240 #define LL_IOC_HSM_ACTION _IOR('f', 220, \
241 struct hsm_current_action)
242 /* see <lustre_lib.h> for ioctl numbers 221-232 */
243
244 #define LL_IOC_LMV_SETSTRIPE _IOWR('f', 240, struct lmv_user_md)
245 #define LL_IOC_LMV_GETSTRIPE _IOWR('f', 241, struct lmv_user_md)
246 #define LL_IOC_REMOVE_ENTRY _IOWR('f', 242, __u64)
247 #define LL_IOC_SET_LEASE _IOWR('f', 243, long)
248 #define LL_IOC_GET_LEASE _IO('f', 244)
249 #define LL_IOC_HSM_IMPORT _IOWR('f', 245, struct hsm_user_import)
250
251 #define LL_STATFS_LMV 1
252 #define LL_STATFS_LOV 2
253 #define LL_STATFS_NODELAY 4
254
255 #define IOC_MDC_TYPE 'i'
256 #define IOC_MDC_LOOKUP _IOWR(IOC_MDC_TYPE, 20, struct obd_device *)
257 #define IOC_MDC_GETFILESTRIPE _IOWR(IOC_MDC_TYPE, 21, struct lov_user_md *)
258 #define IOC_MDC_GETFILEINFO _IOWR(IOC_MDC_TYPE, 22, struct lov_user_mds_data *)
259 #define LL_IOC_MDC_GETINFO _IOWR(IOC_MDC_TYPE, 23, struct lov_user_mds_data *)
260
261 /* Keep these for backward compartability. */
262 #define LL_IOC_OBD_STATFS IOC_OBD_STATFS
263 #define IOC_MDC_GETSTRIPE IOC_MDC_GETFILESTRIPE
264
265
266 #define MAX_OBD_NAME 128 /* If this changes, a NEW ioctl must be added */
267
268 /* Hopefully O_LOV_DELAY_CREATE does not conflict with standard O_xxx flags.
269 * Previously it was defined as 0100000000 and conflicts with FMODE_NONOTIFY
270 * which was added since kernel 2.6.36, so we redefine it as 020000000.
271 * To be compatible with old version's statically linked binary, finally we
272 * define it as (020000000 | 0100000000).
273 * */
274 #define O_LOV_DELAY_CREATE 0120000000
275
276 #define LL_FILE_IGNORE_LOCK 0x00000001
277 #define LL_FILE_GROUP_LOCKED 0x00000002
278 #define LL_FILE_READAHEA 0x00000004
279 #define LL_FILE_LOCKED_DIRECTIO 0x00000008 /* client-side locks with dio */
280 #define LL_FILE_LOCKLESS_IO 0x00000010 /* server-side locks with cio */
281 #define LL_FILE_RMTACL 0x00000020
282
283 #define LOV_USER_MAGIC_V1 0x0BD10BD0
284 #define LOV_USER_MAGIC LOV_USER_MAGIC_V1
285 #define LOV_USER_MAGIC_JOIN_V1 0x0BD20BD0
286 #define LOV_USER_MAGIC_V3 0x0BD30BD0
287
288 #define LMV_MAGIC_V1 0x0CD10CD0 /*normal stripe lmv magic */
289 #define LMV_USER_MAGIC 0x0CD20CD0 /*default lmv magic*/
290
291 #define LOV_PATTERN_RAID0 0x001
292 #define LOV_PATTERN_RAID1 0x002
293 #define LOV_PATTERN_FIRST 0x100
294
295 #define LOV_MAXPOOLNAME 16
296 #define LOV_POOLNAMEF "%.16s"
297
298 #define LOV_MIN_STRIPE_BITS 16 /* maximum PAGE_SIZE (ia64), power of 2 */
299 #define LOV_MIN_STRIPE_SIZE (1 << LOV_MIN_STRIPE_BITS)
300 #define LOV_MAX_STRIPE_COUNT_OLD 160
301 /* This calculation is crafted so that input of 4096 will result in 160
302 * which in turn is equal to old maximal stripe count.
303 * XXX: In fact this is too simpified for now, what it also need is to get
304 * ea_type argument to clearly know how much space each stripe consumes.
305 *
306 * The limit of 12 pages is somewhat arbitrary, but is a reasonably large
307 * allocation that is sufficient for the current generation of systems.
308 *
309 * (max buffer size - lov+rpc header) / sizeof(struct lov_ost_data_v1) */
310 #define LOV_MAX_STRIPE_COUNT 2000 /* ((12 * 4096 - 256) / 24) */
311 #define LOV_ALL_STRIPES 0xffff /* only valid for directories */
312 #define LOV_V1_INSANE_STRIPE_COUNT 65532 /* maximum stripe count bz13933 */
313
314 #define lov_user_ost_data lov_user_ost_data_v1
315 struct lov_user_ost_data_v1 { /* per-stripe data structure */
316 struct ost_id l_ost_oi; /* OST object ID */
317 __u32 l_ost_gen; /* generation of this OST index */
318 __u32 l_ost_idx; /* OST index in LOV */
319 } __attribute__((packed));
320
321 #define lov_user_md lov_user_md_v1
322 struct lov_user_md_v1 { /* LOV EA user data (host-endian) */
323 __u32 lmm_magic; /* magic number = LOV_USER_MAGIC_V1 */
324 __u32 lmm_pattern; /* LOV_PATTERN_RAID0, LOV_PATTERN_RAID1 */
325 struct ost_id lmm_oi; /* LOV object ID */
326 __u32 lmm_stripe_size; /* size of stripe in bytes */
327 __u16 lmm_stripe_count; /* num stripes in use for this object */
328 union {
329 __u16 lmm_stripe_offset; /* starting stripe offset in
330 * lmm_objects, use when writing */
331 __u16 lmm_layout_gen; /* layout generation number
332 * used when reading */
333 };
334 struct lov_user_ost_data_v1 lmm_objects[0]; /* per-stripe data */
335 } __attribute__((packed, __may_alias__));
336
337 struct lov_user_md_v3 { /* LOV EA user data (host-endian) */
338 __u32 lmm_magic; /* magic number = LOV_USER_MAGIC_V3 */
339 __u32 lmm_pattern; /* LOV_PATTERN_RAID0, LOV_PATTERN_RAID1 */
340 struct ost_id lmm_oi; /* LOV object ID */
341 __u32 lmm_stripe_size; /* size of stripe in bytes */
342 __u16 lmm_stripe_count; /* num stripes in use for this object */
343 union {
344 __u16 lmm_stripe_offset; /* starting stripe offset in
345 * lmm_objects, use when writing */
346 __u16 lmm_layout_gen; /* layout generation number
347 * used when reading */
348 };
349 char lmm_pool_name[LOV_MAXPOOLNAME]; /* pool name */
350 struct lov_user_ost_data_v1 lmm_objects[0]; /* per-stripe data */
351 } __attribute__((packed));
352
353 static inline __u32 lov_user_md_size(__u16 stripes, __u32 lmm_magic)
354 {
355 if (lmm_magic == LOV_USER_MAGIC_V3)
356 return sizeof(struct lov_user_md_v3) +
357 stripes * sizeof(struct lov_user_ost_data_v1);
358 else
359 return sizeof(struct lov_user_md_v1) +
360 stripes * sizeof(struct lov_user_ost_data_v1);
361 }
362
363 /* Compile with -D_LARGEFILE64_SOURCE or -D_GNU_SOURCE (or #define) to
364 * use this. It is unsafe to #define those values in this header as it
365 * is possible the application has already #included <sys/stat.h>. */
366 #ifdef HAVE_LOV_USER_MDS_DATA
367 #define lov_user_mds_data lov_user_mds_data_v1
368 struct lov_user_mds_data_v1 {
369 lstat_t lmd_st; /* MDS stat struct */
370 struct lov_user_md_v1 lmd_lmm; /* LOV EA V1 user data */
371 } __attribute__((packed));
372
373 struct lov_user_mds_data_v3 {
374 lstat_t lmd_st; /* MDS stat struct */
375 struct lov_user_md_v3 lmd_lmm; /* LOV EA V3 user data */
376 } __attribute__((packed));
377 #endif
378
379 /* keep this to be the same size as lov_user_ost_data_v1 */
380 struct lmv_user_mds_data {
381 struct lu_fid lum_fid;
382 __u32 lum_padding;
383 __u32 lum_mds;
384 };
385
386 /* lum_type */
387 enum {
388 LMV_STRIPE_TYPE = 0,
389 LMV_DEFAULT_TYPE = 1,
390 };
391
392 #define lmv_user_md lmv_user_md_v1
393 struct lmv_user_md_v1 {
394 __u32 lum_magic; /* must be the first field */
395 __u32 lum_stripe_count; /* dirstripe count */
396 __u32 lum_stripe_offset; /* MDT idx for default dirstripe */
397 __u32 lum_hash_type; /* Dir stripe policy */
398 __u32 lum_type; /* LMV type: default or normal */
399 __u32 lum_padding1;
400 __u32 lum_padding2;
401 __u32 lum_padding3;
402 char lum_pool_name[LOV_MAXPOOLNAME];
403 struct lmv_user_mds_data lum_objects[0];
404 };
405
406 static inline int lmv_user_md_size(int stripes, int lmm_magic)
407 {
408 return sizeof(struct lmv_user_md) +
409 stripes * sizeof(struct lmv_user_mds_data);
410 }
411
412 extern void lustre_swab_lmv_user_md(struct lmv_user_md *lum);
413
414 struct ll_recreate_obj {
415 __u64 lrc_id;
416 __u32 lrc_ost_idx;
417 };
418
419 struct ll_fid {
420 __u64 id; /* holds object id */
421 __u32 generation; /* holds object generation */
422 __u32 f_type; /* holds object type or stripe idx when passing it to
423 * OST for saving into EA. */
424 };
425
426 #define UUID_MAX 40
427 struct obd_uuid {
428 char uuid[UUID_MAX];
429 };
430
431 static inline bool obd_uuid_equals(const struct obd_uuid *u1,
432 const struct obd_uuid *u2)
433 {
434 return strcmp((char *)u1->uuid, (char *)u2->uuid) == 0;
435 }
436
437 static inline int obd_uuid_empty(struct obd_uuid *uuid)
438 {
439 return uuid->uuid[0] == '\0';
440 }
441
442 static inline void obd_str2uuid(struct obd_uuid *uuid, const char *tmp)
443 {
444 strncpy((char *)uuid->uuid, tmp, sizeof(*uuid));
445 uuid->uuid[sizeof(*uuid) - 1] = '\0';
446 }
447
448 /* For printf's only, make sure uuid is terminated */
449 static inline char *obd_uuid2str(const struct obd_uuid *uuid)
450 {
451 if (uuid->uuid[sizeof(*uuid) - 1] != '\0') {
452 /* Obviously not safe, but for printfs, no real harm done...
453 we're always null-terminated, even in a race. */
454 static char temp[sizeof(*uuid)];
455 memcpy(temp, uuid->uuid, sizeof(*uuid) - 1);
456 temp[sizeof(*uuid) - 1] = '\0';
457 return temp;
458 }
459 return (char *)(uuid->uuid);
460 }
461
462 /* Extract fsname from uuid (or target name) of a target
463 e.g. (myfs-OST0007_UUID -> myfs)
464 see also deuuidify. */
465 static inline void obd_uuid2fsname(char *buf, char *uuid, int buflen)
466 {
467 char *p;
468
469 strncpy(buf, uuid, buflen - 1);
470 buf[buflen - 1] = '\0';
471 p = strrchr(buf, '-');
472 if (p)
473 *p = '\0';
474 }
475
476 /* printf display format
477 e.g. printf("file FID is "DFID"\n", PFID(fid)); */
478 #define FID_NOBRACE_LEN 40
479 #define FID_LEN (FID_NOBRACE_LEN + 2)
480 #define DFID_NOBRACE LPX64":0x%x:0x%x"
481 #define DFID "["DFID_NOBRACE"]"
482 #define PFID(fid) \
483 (fid)->f_seq, \
484 (fid)->f_oid, \
485 (fid)->f_ver
486
487 /* scanf input parse format -- strip '[' first.
488 e.g. sscanf(fidstr, SFID, RFID(&fid)); */
489 /* #define SFID "0x"LPX64i":0x"LPSZX":0x"LPSZX""
490 liblustreapi.c:2893: warning: format '%lx' expects type 'long unsigned int *', but argument 4 has type 'unsigned int *'
491 liblustreapi.c:2893: warning: format '%lx' expects type 'long unsigned int *', but argument 5 has type 'unsigned int *'
492 */
493 #define SFID "0x"LPX64i":0x%x:0x%x"
494 #define RFID(fid) \
495 &((fid)->f_seq), \
496 &((fid)->f_oid), \
497 &((fid)->f_ver)
498
499
500 /********* Quotas **********/
501
502 /* these must be explicitly translated into linux Q_* in ll_dir_ioctl */
503 #define LUSTRE_Q_QUOTAON 0x800002 /* turn quotas on */
504 #define LUSTRE_Q_QUOTAOFF 0x800003 /* turn quotas off */
505 #define LUSTRE_Q_GETINFO 0x800005 /* get information about quota files */
506 #define LUSTRE_Q_SETINFO 0x800006 /* set information about quota files */
507 #define LUSTRE_Q_GETQUOTA 0x800007 /* get user quota structure */
508 #define LUSTRE_Q_SETQUOTA 0x800008 /* set user quota structure */
509 /* lustre-specific control commands */
510 #define LUSTRE_Q_INVALIDATE 0x80000b /* invalidate quota data */
511 #define LUSTRE_Q_FINVALIDATE 0x80000c /* invalidate filter quota data */
512
513 #define UGQUOTA 2 /* set both USRQUOTA and GRPQUOTA */
514
515 struct if_quotacheck {
516 char obd_type[16];
517 struct obd_uuid obd_uuid;
518 };
519
520 #define IDENTITY_DOWNCALL_MAGIC 0x6d6dd629
521
522 /* permission */
523 #define N_PERMS_MAX 64
524
525 struct perm_downcall_data {
526 __u64 pdd_nid;
527 __u32 pdd_perm;
528 __u32 pdd_padding;
529 };
530
531 struct identity_downcall_data {
532 __u32 idd_magic;
533 __u32 idd_err;
534 __u32 idd_uid;
535 __u32 idd_gid;
536 __u32 idd_nperms;
537 __u32 idd_ngroups;
538 struct perm_downcall_data idd_perms[N_PERMS_MAX];
539 __u32 idd_groups[0];
540 };
541
542 /* for non-mapped uid/gid */
543 #define NOBODY_UID 99
544 #define NOBODY_GID 99
545
546 #define INVALID_ID (-1)
547
548 enum {
549 RMT_LSETFACL = 1,
550 RMT_LGETFACL = 2,
551 RMT_RSETFACL = 3,
552 RMT_RGETFACL = 4
553 };
554
555 #ifdef NEED_QUOTA_DEFS
556 #ifndef QIF_BLIMITS
557 #define QIF_BLIMITS 1
558 #define QIF_SPACE 2
559 #define QIF_ILIMITS 4
560 #define QIF_INODES 8
561 #define QIF_BTIME 16
562 #define QIF_ITIME 32
563 #define QIF_LIMITS (QIF_BLIMITS | QIF_ILIMITS)
564 #define QIF_USAGE (QIF_SPACE | QIF_INODES)
565 #define QIF_TIMES (QIF_BTIME | QIF_ITIME)
566 #define QIF_ALL (QIF_LIMITS | QIF_USAGE | QIF_TIMES)
567 #endif
568
569 #endif /* !__KERNEL__ */
570
571 /* lustre volatile file support
572 * file name header: .^L^S^T^R:volatile"
573 */
574 #define LUSTRE_VOLATILE_HDR ".\x0c\x13\x14\x12:VOLATILE"
575 #define LUSTRE_VOLATILE_HDR_LEN 14
576 /* hdr + MDT index */
577 #define LUSTRE_VOLATILE_IDX LUSTRE_VOLATILE_HDR":%.4X:"
578
579 typedef enum lustre_quota_version {
580 LUSTRE_QUOTA_V2 = 1
581 } lustre_quota_version_t;
582
583 /* XXX: same as if_dqinfo struct in kernel */
584 struct obd_dqinfo {
585 __u64 dqi_bgrace;
586 __u64 dqi_igrace;
587 __u32 dqi_flags;
588 __u32 dqi_valid;
589 };
590
591 /* XXX: same as if_dqblk struct in kernel, plus one padding */
592 struct obd_dqblk {
593 __u64 dqb_bhardlimit;
594 __u64 dqb_bsoftlimit;
595 __u64 dqb_curspace;
596 __u64 dqb_ihardlimit;
597 __u64 dqb_isoftlimit;
598 __u64 dqb_curinodes;
599 __u64 dqb_btime;
600 __u64 dqb_itime;
601 __u32 dqb_valid;
602 __u32 dqb_padding;
603 };
604
605 enum {
606 QC_GENERAL = 0,
607 QC_MDTIDX = 1,
608 QC_OSTIDX = 2,
609 QC_UUID = 3
610 };
611
612 struct if_quotactl {
613 __u32 qc_cmd;
614 __u32 qc_type;
615 __u32 qc_id;
616 __u32 qc_stat;
617 __u32 qc_valid;
618 __u32 qc_idx;
619 struct obd_dqinfo qc_dqinfo;
620 struct obd_dqblk qc_dqblk;
621 char obd_type[16];
622 struct obd_uuid obd_uuid;
623 };
624
625 /* swap layout flags */
626 #define SWAP_LAYOUTS_CHECK_DV1 (1 << 0)
627 #define SWAP_LAYOUTS_CHECK_DV2 (1 << 1)
628 #define SWAP_LAYOUTS_KEEP_MTIME (1 << 2)
629 #define SWAP_LAYOUTS_KEEP_ATIME (1 << 3)
630
631 /* Swap XATTR_NAME_HSM as well, only on the MDT so far */
632 #define SWAP_LAYOUTS_MDS_HSM (1 << 31)
633 struct lustre_swap_layouts {
634 __u64 sl_flags;
635 __u32 sl_fd;
636 __u32 sl_gid;
637 __u64 sl_dv1;
638 __u64 sl_dv2;
639 };
640
641
642 /********* Changelogs **********/
643 /** Changelog record types */
644 enum changelog_rec_type {
645 CL_MARK = 0,
646 CL_CREATE = 1, /* namespace */
647 CL_MKDIR = 2, /* namespace */
648 CL_HARDLINK = 3, /* namespace */
649 CL_SOFTLINK = 4, /* namespace */
650 CL_MKNOD = 5, /* namespace */
651 CL_UNLINK = 6, /* namespace */
652 CL_RMDIR = 7, /* namespace */
653 CL_RENAME = 8, /* namespace */
654 CL_EXT = 9, /* namespace extended record (2nd half of rename) */
655 CL_OPEN = 10, /* not currently used */
656 CL_CLOSE = 11, /* may be written to log only with mtime change */
657 CL_LAYOUT = 12, /* file layout/striping modified */
658 CL_TRUNC = 13,
659 CL_SETATTR = 14,
660 CL_XATTR = 15,
661 CL_HSM = 16, /* HSM specific events, see flags */
662 CL_MTIME = 17, /* Precedence: setattr > mtime > ctime > atime */
663 CL_CTIME = 18,
664 CL_ATIME = 19,
665 CL_LAST
666 };
667
668 static inline const char *changelog_type2str(int type) {
669 static const char *changelog_str[] = {
670 "MARK", "CREAT", "MKDIR", "HLINK", "SLINK", "MKNOD", "UNLNK",
671 "RMDIR", "RENME", "RNMTO", "OPEN", "CLOSE", "LYOUT", "TRUNC",
672 "SATTR", "XATTR", "HSM", "MTIME", "CTIME", "ATIME",
673 };
674
675 if (type >= 0 && type < CL_LAST)
676 return changelog_str[type];
677 return NULL;
678 }
679
680 /* per-record flags */
681 #define CLF_VERSION 0x1000
682 #define CLF_EXT_VERSION 0x2000
683 #define CLF_FLAGSHIFT 12
684 #define CLF_FLAGMASK ((1U << CLF_FLAGSHIFT) - 1)
685 #define CLF_VERMASK (~CLF_FLAGMASK)
686 /* Anything under the flagmask may be per-type (if desired) */
687 /* Flags for unlink */
688 #define CLF_UNLINK_LAST 0x0001 /* Unlink of last hardlink */
689 #define CLF_UNLINK_HSM_EXISTS 0x0002 /* File has something in HSM */
690 /* HSM cleaning needed */
691 /* Flags for rename */
692 #define CLF_RENAME_LAST 0x0001 /* rename unlink last hardlink of target */
693
694 /* Flags for HSM */
695 /* 12b used (from high weight to low weight):
696 * 2b for flags
697 * 3b for event
698 * 7b for error code
699 */
700 #define CLF_HSM_ERR_L 0 /* HSM return code, 7 bits */
701 #define CLF_HSM_ERR_H 6
702 #define CLF_HSM_EVENT_L 7 /* HSM event, 3 bits, see enum hsm_event */
703 #define CLF_HSM_EVENT_H 9
704 #define CLF_HSM_FLAG_L 10 /* HSM flags, 2 bits, 1 used, 1 spare */
705 #define CLF_HSM_FLAG_H 11
706 #define CLF_HSM_SPARE_L 12 /* 4 spare bits */
707 #define CLF_HSM_SPARE_H 15
708 #define CLF_HSM_LAST 15
709
710 /* Remove bits higher than _h, then extract the value
711 * between _h and _l by shifting lower weigth to bit 0. */
712 #define CLF_GET_BITS(_b, _h, _l) (((_b << (CLF_HSM_LAST - _h)) & 0xFFFF) \
713 >> (CLF_HSM_LAST - _h + _l))
714
715 #define CLF_HSM_SUCCESS 0x00
716 #define CLF_HSM_MAXERROR 0x7E
717 #define CLF_HSM_ERROVERFLOW 0x7F
718
719 #define CLF_HSM_DIRTY 1 /* file is dirty after HSM request end */
720
721 /* 3 bits field => 8 values allowed */
722 enum hsm_event {
723 HE_ARCHIVE = 0,
724 HE_RESTORE = 1,
725 HE_CANCEL = 2,
726 HE_RELEASE = 3,
727 HE_REMOVE = 4,
728 HE_STATE = 5,
729 HE_SPARE1 = 6,
730 HE_SPARE2 = 7,
731 };
732
733 static inline enum hsm_event hsm_get_cl_event(__u16 flags)
734 {
735 return CLF_GET_BITS(flags, CLF_HSM_EVENT_H, CLF_HSM_EVENT_L);
736 }
737
738 static inline void hsm_set_cl_event(int *flags, enum hsm_event he)
739 {
740 *flags |= (he << CLF_HSM_EVENT_L);
741 }
742
743 static inline __u16 hsm_get_cl_flags(int flags)
744 {
745 return CLF_GET_BITS(flags, CLF_HSM_FLAG_H, CLF_HSM_FLAG_L);
746 }
747
748 static inline void hsm_set_cl_flags(int *flags, int bits)
749 {
750 *flags |= (bits << CLF_HSM_FLAG_L);
751 }
752
753 static inline int hsm_get_cl_error(int flags)
754 {
755 return CLF_GET_BITS(flags, CLF_HSM_ERR_H, CLF_HSM_ERR_L);
756 }
757
758 static inline void hsm_set_cl_error(int *flags, int error)
759 {
760 *flags |= (error << CLF_HSM_ERR_L);
761 }
762
763 #define CR_MAXSIZE cfs_size_round(2*NAME_MAX + 1 + sizeof(struct changelog_rec))
764
765 struct changelog_rec {
766 __u16 cr_namelen;
767 __u16 cr_flags; /**< (flags&CLF_FLAGMASK)|CLF_VERSION */
768 __u32 cr_type; /**< \a changelog_rec_type */
769 __u64 cr_index; /**< changelog record number */
770 __u64 cr_prev; /**< last index for this target fid */
771 __u64 cr_time;
772 union {
773 lustre_fid cr_tfid; /**< target fid */
774 __u32 cr_markerflags; /**< CL_MARK flags */
775 };
776 lustre_fid cr_pfid; /**< parent fid */
777 char cr_name[0]; /**< last element */
778 } __attribute__((packed));
779
780 /* changelog_ext_rec is 2*sizeof(lu_fid) bigger than changelog_rec, to save
781 * space, only rename uses changelog_ext_rec, while others use changelog_rec to
782 * store records.
783 */
784 struct changelog_ext_rec {
785 __u16 cr_namelen;
786 __u16 cr_flags; /**< (flags & CLF_FLAGMASK) |
787 CLF_EXT_VERSION */
788 __u32 cr_type; /**< \a changelog_rec_type */
789 __u64 cr_index; /**< changelog record number */
790 __u64 cr_prev; /**< last index for this target fid */
791 __u64 cr_time;
792 union {
793 lustre_fid cr_tfid; /**< target fid */
794 __u32 cr_markerflags; /**< CL_MARK flags */
795 };
796 lustre_fid cr_pfid; /**< target parent fid */
797 lustre_fid cr_sfid; /**< source fid, or zero */
798 lustre_fid cr_spfid; /**< source parent fid, or zero */
799 char cr_name[0]; /**< last element */
800 } __attribute__((packed));
801
802 #define CHANGELOG_REC_EXTENDED(rec) \
803 (((rec)->cr_flags & CLF_VERMASK) == CLF_EXT_VERSION)
804
805 static inline int changelog_rec_size(struct changelog_rec *rec)
806 {
807 return CHANGELOG_REC_EXTENDED(rec) ? sizeof(struct changelog_ext_rec):
808 sizeof(*rec);
809 }
810
811 static inline char *changelog_rec_name(struct changelog_rec *rec)
812 {
813 return CHANGELOG_REC_EXTENDED(rec) ?
814 ((struct changelog_ext_rec *)rec)->cr_name: rec->cr_name;
815 }
816
817 static inline int changelog_rec_snamelen(struct changelog_ext_rec *rec)
818 {
819 return rec->cr_namelen - strlen(rec->cr_name) - 1;
820 }
821
822 static inline char *changelog_rec_sname(struct changelog_ext_rec *rec)
823 {
824 return rec->cr_name + strlen(rec->cr_name) + 1;
825 }
826
827 struct ioc_changelog {
828 __u64 icc_recno;
829 __u32 icc_mdtindex;
830 __u32 icc_id;
831 __u32 icc_flags;
832 };
833
834 enum changelog_message_type {
835 CL_RECORD = 10, /* message is a changelog_rec */
836 CL_EOF = 11, /* at end of current changelog */
837 };
838
839 /********* Misc **********/
840
841 struct ioc_data_version {
842 __u64 idv_version;
843 __u64 idv_flags; /* See LL_DV_xxx */
844 };
845 #define LL_DV_NOFLUSH 0x01 /* Do not take READ EXTENT LOCK before sampling
846 version. Dirty caches are left unchanged. */
847
848 #ifndef offsetof
849 # define offsetof(typ,memb) ((unsigned long)((char *)&(((typ *)0)->memb)))
850 #endif
851
852 #define dot_lustre_name ".lustre"
853
854
855 /********* HSM **********/
856
857 /** HSM per-file state
858 * See HSM_FLAGS below.
859 */
860 enum hsm_states {
861 HS_EXISTS = 0x00000001,
862 HS_DIRTY = 0x00000002,
863 HS_RELEASED = 0x00000004,
864 HS_ARCHIVED = 0x00000008,
865 HS_NORELEASE = 0x00000010,
866 HS_NOARCHIVE = 0x00000020,
867 HS_LOST = 0x00000040,
868 };
869
870 /* HSM user-setable flags. */
871 #define HSM_USER_MASK (HS_NORELEASE | HS_NOARCHIVE | HS_DIRTY)
872
873 /* Other HSM flags. */
874 #define HSM_STATUS_MASK (HS_EXISTS | HS_LOST | HS_RELEASED | HS_ARCHIVED)
875
876 /*
877 * All HSM-related possible flags that could be applied to a file.
878 * This should be kept in sync with hsm_states.
879 */
880 #define HSM_FLAGS_MASK (HSM_USER_MASK | HSM_STATUS_MASK)
881
882 /**
883 * HSM request progress state
884 */
885 enum hsm_progress_states {
886 HPS_WAITING = 1,
887 HPS_RUNNING = 2,
888 HPS_DONE = 3,
889 };
890 #define HPS_NONE 0
891
892 static inline char *hsm_progress_state2name(enum hsm_progress_states s)
893 {
894 switch (s) {
895 case HPS_WAITING: return "waiting";
896 case HPS_RUNNING: return "running";
897 case HPS_DONE: return "done";
898 default: return "unknown";
899 }
900 }
901
902 struct hsm_extent {
903 __u64 offset;
904 __u64 length;
905 } __attribute__((packed));
906
907 /**
908 * Current HSM states of a Lustre file.
909 *
910 * This structure purpose is to be sent to user-space mainly. It describes the
911 * current HSM flags and in-progress action.
912 */
913 struct hsm_user_state {
914 /** Current HSM states, from enum hsm_states. */
915 __u32 hus_states;
916 __u32 hus_archive_id;
917 /** The current undergoing action, if there is one */
918 __u32 hus_in_progress_state;
919 __u32 hus_in_progress_action;
920 struct hsm_extent hus_in_progress_location;
921 char hus_extended_info[];
922 };
923
924 struct hsm_state_set_ioc {
925 struct lu_fid hssi_fid;
926 __u64 hssi_setmask;
927 __u64 hssi_clearmask;
928 };
929
930 /*
931 * This structure describes the current in-progress action for a file.
932 * it is retuned to user space and send over the wire
933 */
934 struct hsm_current_action {
935 /** The current undergoing action, if there is one */
936 /* state is one of hsm_progress_states */
937 __u32 hca_state;
938 /* action is one of hsm_user_action */
939 __u32 hca_action;
940 struct hsm_extent hca_location;
941 };
942
943 /***** HSM user requests ******/
944 /* User-generated (lfs/ioctl) request types */
945 enum hsm_user_action {
946 HUA_NONE = 1, /* no action (noop) */
947 HUA_ARCHIVE = 10, /* copy to hsm */
948 HUA_RESTORE = 11, /* prestage */
949 HUA_RELEASE = 12, /* drop ost objects */
950 HUA_REMOVE = 13, /* remove from archive */
951 HUA_CANCEL = 14 /* cancel a request */
952 };
953
954 static inline char *hsm_user_action2name(enum hsm_user_action a)
955 {
956 switch (a) {
957 case HUA_NONE: return "NOOP";
958 case HUA_ARCHIVE: return "ARCHIVE";
959 case HUA_RESTORE: return "RESTORE";
960 case HUA_RELEASE: return "RELEASE";
961 case HUA_REMOVE: return "REMOVE";
962 case HUA_CANCEL: return "CANCEL";
963 default: return "UNKNOWN";
964 }
965 }
966
967 /*
968 * List of hr_flags (bit field)
969 */
970 #define HSM_FORCE_ACTION 0x0001
971 /* used by CT, connot be set by user */
972 #define HSM_GHOST_COPY 0x0002
973
974 /**
975 * Contains all the fixed part of struct hsm_user_request.
976 *
977 */
978 struct hsm_request {
979 __u32 hr_action; /* enum hsm_user_action */
980 __u32 hr_archive_id; /* archive id, used only with HUA_ARCHIVE */
981 __u64 hr_flags; /* request flags */
982 __u32 hr_itemcount; /* item count in hur_user_item vector */
983 __u32 hr_data_len;
984 };
985
986 struct hsm_user_item {
987 lustre_fid hui_fid;
988 struct hsm_extent hui_extent;
989 } __attribute__((packed));
990
991 struct hsm_user_request {
992 struct hsm_request hur_request;
993 struct hsm_user_item hur_user_item[0];
994 /* extra data blob at end of struct (after all
995 * hur_user_items), only use helpers to access it
996 */
997 } __attribute__((packed));
998
999 /** Return pointer to data field in a hsm user request */
1000 static inline void *hur_data(struct hsm_user_request *hur)
1001 {
1002 return &(hur->hur_user_item[hur->hur_request.hr_itemcount]);
1003 }
1004
1005 /** Compute the current length of the provided hsm_user_request. */
1006 static inline int hur_len(struct hsm_user_request *hur)
1007 {
1008 return offsetof(struct hsm_user_request,
1009 hur_user_item[hur->hur_request.hr_itemcount]) +
1010 hur->hur_request.hr_data_len;
1011 }
1012
1013 /****** HSM RPCs to copytool *****/
1014 /* Message types the copytool may receive */
1015 enum hsm_message_type {
1016 HMT_ACTION_LIST = 100, /* message is a hsm_action_list */
1017 };
1018
1019 /* Actions the copytool may be instructed to take for a given action_item */
1020 enum hsm_copytool_action {
1021 HSMA_NONE = 10, /* no action */
1022 HSMA_ARCHIVE = 20, /* arbitrary offset */
1023 HSMA_RESTORE = 21,
1024 HSMA_REMOVE = 22,
1025 HSMA_CANCEL = 23
1026 };
1027
1028 static inline char *hsm_copytool_action2name(enum hsm_copytool_action a)
1029 {
1030 switch (a) {
1031 case HSMA_NONE: return "NOOP";
1032 case HSMA_ARCHIVE: return "ARCHIVE";
1033 case HSMA_RESTORE: return "RESTORE";
1034 case HSMA_REMOVE: return "REMOVE";
1035 case HSMA_CANCEL: return "CANCEL";
1036 default: return "UNKNOWN";
1037 }
1038 }
1039
1040 /* Copytool item action description */
1041 struct hsm_action_item {
1042 __u32 hai_len; /* valid size of this struct */
1043 __u32 hai_action; /* hsm_copytool_action, but use known size */
1044 lustre_fid hai_fid; /* Lustre FID to operated on */
1045 lustre_fid hai_dfid; /* fid used for data access */
1046 struct hsm_extent hai_extent; /* byte range to operate on */
1047 __u64 hai_cookie; /* action cookie from coordinator */
1048 __u64 hai_gid; /* grouplock id */
1049 char hai_data[0]; /* variable length */
1050 } __attribute__((packed));
1051
1052 /*
1053 * helper function which print in hexa the first bytes of
1054 * hai opaque field
1055 * \param hai [IN] record to print
1056 * \param buffer [OUT] output buffer
1057 * \param len [IN] max buffer len
1058 * \retval buffer
1059 */
1060 static inline char *hai_dump_data_field(struct hsm_action_item *hai,
1061 char *buffer, int len)
1062 {
1063 int i, sz, data_len;
1064 char *ptr;
1065
1066 ptr = buffer;
1067 sz = len;
1068 data_len = hai->hai_len - sizeof(*hai);
1069 for (i = 0 ; (i < data_len) && (sz > 0) ; i++)
1070 {
1071 int cnt;
1072
1073 cnt = snprintf(ptr, sz, "%.2X",
1074 (unsigned char)hai->hai_data[i]);
1075 ptr += cnt;
1076 sz -= cnt;
1077 }
1078 *ptr = '\0';
1079 return buffer;
1080 }
1081
1082 /* Copytool action list */
1083 #define HAL_VERSION 1
1084 #define HAL_MAXSIZE LNET_MTU /* bytes, used in userspace only */
1085 struct hsm_action_list {
1086 __u32 hal_version;
1087 __u32 hal_count; /* number of hai's to follow */
1088 __u64 hal_compound_id; /* returned by coordinator */
1089 __u64 hal_flags;
1090 __u32 hal_archive_id; /* which archive backend */
1091 __u32 padding1;
1092 char hal_fsname[0]; /* null-terminated */
1093 /* struct hsm_action_item[hal_count] follows, aligned on 8-byte
1094 boundaries. See hai_zero */
1095 } __attribute__((packed));
1096
1097 #ifndef HAVE_CFS_SIZE_ROUND
1098 static inline int cfs_size_round (int val)
1099 {
1100 return (val + 7) & (~0x7);
1101 }
1102 #define HAVE_CFS_SIZE_ROUND
1103 #endif
1104
1105 /* Return pointer to first hai in action list */
1106 static inline struct hsm_action_item * hai_zero(struct hsm_action_list *hal)
1107 {
1108 return (struct hsm_action_item *)(hal->hal_fsname +
1109 cfs_size_round(strlen(hal-> \
1110 hal_fsname)));
1111 }
1112 /* Return pointer to next hai */
1113 static inline struct hsm_action_item * hai_next(struct hsm_action_item *hai)
1114 {
1115 return (struct hsm_action_item *)((char *)hai +
1116 cfs_size_round(hai->hai_len));
1117 }
1118
1119 /* Return size of an hsm_action_list */
1120 static inline int hal_size(struct hsm_action_list *hal)
1121 {
1122 int i, sz;
1123 struct hsm_action_item *hai;
1124
1125 sz = sizeof(*hal) + cfs_size_round(strlen(hal->hal_fsname));
1126 hai = hai_zero(hal);
1127 for (i = 0; i < hal->hal_count; i++, hai = hai_next(hai))
1128 sz += cfs_size_round(hai->hai_len);
1129
1130 return sz;
1131 }
1132
1133 /* HSM file import
1134 * describe the attributes to be set on imported file
1135 */
1136 struct hsm_user_import {
1137 __u64 hui_size;
1138 __u64 hui_atime;
1139 __u64 hui_mtime;
1140 __u32 hui_atime_ns;
1141 __u32 hui_mtime_ns;
1142 __u32 hui_uid;
1143 __u32 hui_gid;
1144 __u32 hui_mode;
1145 __u32 hui_archive_id;
1146 };
1147
1148 /* Copytool progress reporting */
1149 #define HP_FLAG_COMPLETED 0x01
1150 #define HP_FLAG_RETRY 0x02
1151
1152 struct hsm_progress {
1153 lustre_fid hp_fid;
1154 __u64 hp_cookie;
1155 struct hsm_extent hp_extent;
1156 __u16 hp_flags;
1157 __u16 hp_errval; /* positive val */
1158 __u32 padding;
1159 };
1160
1161 /**
1162 * Use by copytool during any hsm request they handled.
1163 * This structure is initialized by llapi_hsm_copy_start()
1164 * which is an helper over the ioctl() interface
1165 * Store Lustre, internal use only, data.
1166 */
1167 struct hsm_copy {
1168 __u64 hc_data_version;
1169 __u16 hc_flags;
1170 __u16 hc_errval; /* positive val */
1171 __u32 padding;
1172 struct hsm_action_item hc_hai;
1173 };
1174
1175 /** @} lustreuser */
1176
1177 #endif /* _LUSTRE_USER_H */
Linux kernel - Deliverables
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