4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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.
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).
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
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
27 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2010, 2012, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/include/lustre/lustre_user.h
38 * Lustre public user-space interface definitions.
41 #ifndef _LUSTRE_USER_H
42 #define _LUSTRE_USER_H
44 /** \defgroup lustreuser lustreuser
49 #include "ll_fiemap.h"
50 #include "../linux/lustre_user.h"
53 #define LL_SUPER_MAGIC 0x0BD00BD0
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)
65 /* FIEMAP flags supported by Lustre */
66 #define LUSTRE_FIEMAP_FLAGS_COMPAT (FIEMAP_FLAG_SYNC | FIEMAP_FLAG_DEVICE_ORDER)
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 */
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
104 * FID is a cluster-wide unique identifier of a file or an object (stripe).
105 * FIDs are never reused.
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.
115 /* FID number within sequence. */
118 * FID version, used to distinguish different versions (in the sense
119 * of snapshots, etc.) of the same file system object. Not currently
126 struct lu_fid ff_parent; /* ff_parent.f_ver == file stripe number */
129 /* keep this one for compatibility */
130 struct filter_fid_old {
131 struct lu_fid ff_parent;
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;
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
146 struct lustre_mdt_attrs {
148 * Bitfield for supported data in this structure. From enum lma_compat.
149 * lma_self_fid and lma_flags are always available.
153 * Per-file incompat feature list. Lustre version should support all
154 * flags set in this field. The supported feature mask is available in
158 /** FID of this inode */
159 struct lu_fid lma_self_fid;
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.
167 #define LMA_OLD_SIZE (sizeof(struct lustre_mdt_attrs) + 5 * sizeof(__u64))
170 * OST object IDentifier.
178 struct lu_fid oi_fid;
182 #define DOSTID "%#llx:%llu"
183 #define POSTID(oi) ostid_seq(oi), ostid_id(oi)
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
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)
228 /* see <lustre_lib.h> for ioctl numbers 177-210 */
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 */
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)
251 #define LL_STATFS_LMV 1
252 #define LL_STATFS_LOV 2
253 #define LL_STATFS_NODELAY 4
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 *)
261 /* Keep these for backward compartability. */
262 #define LL_IOC_OBD_STATFS IOC_OBD_STATFS
263 #define IOC_MDC_GETSTRIPE IOC_MDC_GETFILESTRIPE
266 #define MAX_OBD_NAME 128 /* If this changes, a NEW ioctl must be added */
268 /* Define O_LOV_DELAY_CREATE to be a mask that is not useful for regular
269 * files, but are unlikely to be used in practice and are not harmful if
270 * used incorrectly. O_NOCTTY and FASYNC are only meaningful for character
271 * devices and are safe for use on new files (See LU-812, LU-4209). */
272 #define O_LOV_DELAY_CREATE (O_NOCTTY | FASYNC)
274 #define LL_FILE_IGNORE_LOCK 0x00000001
275 #define LL_FILE_GROUP_LOCKED 0x00000002
276 #define LL_FILE_READAHEA 0x00000004
277 #define LL_FILE_LOCKED_DIRECTIO 0x00000008 /* client-side locks with dio */
278 #define LL_FILE_LOCKLESS_IO 0x00000010 /* server-side locks with cio */
279 #define LL_FILE_RMTACL 0x00000020
281 #define LOV_USER_MAGIC_V1 0x0BD10BD0
282 #define LOV_USER_MAGIC LOV_USER_MAGIC_V1
283 #define LOV_USER_MAGIC_JOIN_V1 0x0BD20BD0
284 #define LOV_USER_MAGIC_V3 0x0BD30BD0
286 #define LMV_MAGIC_V1 0x0CD10CD0 /*normal stripe lmv magic */
287 #define LMV_USER_MAGIC 0x0CD20CD0 /*default lmv magic*/
289 #define LOV_PATTERN_RAID0 0x001
290 #define LOV_PATTERN_RAID1 0x002
291 #define LOV_PATTERN_FIRST 0x100
293 #define LOV_MAXPOOLNAME 16
294 #define LOV_POOLNAMEF "%.16s"
296 #define LOV_MIN_STRIPE_BITS 16 /* maximum PAGE_SIZE (ia64), power of 2 */
297 #define LOV_MIN_STRIPE_SIZE (1 << LOV_MIN_STRIPE_BITS)
298 #define LOV_MAX_STRIPE_COUNT_OLD 160
299 /* This calculation is crafted so that input of 4096 will result in 160
300 * which in turn is equal to old maximal stripe count.
301 * XXX: In fact this is too simplified for now, what it also need is to get
302 * ea_type argument to clearly know how much space each stripe consumes.
304 * The limit of 12 pages is somewhat arbitrary, but is a reasonably large
305 * allocation that is sufficient for the current generation of systems.
307 * (max buffer size - lov+rpc header) / sizeof(struct lov_ost_data_v1) */
308 #define LOV_MAX_STRIPE_COUNT 2000 /* ((12 * 4096 - 256) / 24) */
309 #define LOV_ALL_STRIPES 0xffff /* only valid for directories */
310 #define LOV_V1_INSANE_STRIPE_COUNT 65532 /* maximum stripe count bz13933 */
312 #define lov_user_ost_data lov_user_ost_data_v1
313 struct lov_user_ost_data_v1 { /* per-stripe data structure */
314 struct ost_id l_ost_oi; /* OST object ID */
315 __u32 l_ost_gen; /* generation of this OST index */
316 __u32 l_ost_idx; /* OST index in LOV */
317 } __attribute__((packed));
319 #define lov_user_md lov_user_md_v1
320 struct lov_user_md_v1 { /* LOV EA user data (host-endian) */
321 __u32 lmm_magic; /* magic number = LOV_USER_MAGIC_V1 */
322 __u32 lmm_pattern; /* LOV_PATTERN_RAID0, LOV_PATTERN_RAID1 */
323 struct ost_id lmm_oi; /* LOV object ID */
324 __u32 lmm_stripe_size; /* size of stripe in bytes */
325 __u16 lmm_stripe_count; /* num stripes in use for this object */
327 __u16 lmm_stripe_offset; /* starting stripe offset in
328 * lmm_objects, use when writing */
329 __u16 lmm_layout_gen; /* layout generation number
330 * used when reading */
332 struct lov_user_ost_data_v1 lmm_objects[0]; /* per-stripe data */
333 } __attribute__((packed, __may_alias__));
335 struct lov_user_md_v3 { /* LOV EA user data (host-endian) */
336 __u32 lmm_magic; /* magic number = LOV_USER_MAGIC_V3 */
337 __u32 lmm_pattern; /* LOV_PATTERN_RAID0, LOV_PATTERN_RAID1 */
338 struct ost_id lmm_oi; /* LOV object ID */
339 __u32 lmm_stripe_size; /* size of stripe in bytes */
340 __u16 lmm_stripe_count; /* num stripes in use for this object */
342 __u16 lmm_stripe_offset; /* starting stripe offset in
343 * lmm_objects, use when writing */
344 __u16 lmm_layout_gen; /* layout generation number
345 * used when reading */
347 char lmm_pool_name[LOV_MAXPOOLNAME]; /* pool name */
348 struct lov_user_ost_data_v1 lmm_objects[0]; /* per-stripe data */
349 } __attribute__((packed));
351 static inline __u32 lov_user_md_size(__u16 stripes, __u32 lmm_magic)
353 if (lmm_magic == LOV_USER_MAGIC_V3)
354 return sizeof(struct lov_user_md_v3) +
355 stripes * sizeof(struct lov_user_ost_data_v1);
357 return sizeof(struct lov_user_md_v1) +
358 stripes * sizeof(struct lov_user_ost_data_v1);
361 /* Compile with -D_LARGEFILE64_SOURCE or -D_GNU_SOURCE (or #define) to
362 * use this. It is unsafe to #define those values in this header as it
363 * is possible the application has already #included <sys/stat.h>. */
364 #ifdef HAVE_LOV_USER_MDS_DATA
365 #define lov_user_mds_data lov_user_mds_data_v1
366 struct lov_user_mds_data_v1 {
367 lstat_t lmd_st; /* MDS stat struct */
368 struct lov_user_md_v1 lmd_lmm; /* LOV EA V1 user data */
369 } __attribute__((packed));
371 struct lov_user_mds_data_v3 {
372 lstat_t lmd_st; /* MDS stat struct */
373 struct lov_user_md_v3 lmd_lmm; /* LOV EA V3 user data */
374 } __attribute__((packed));
377 /* keep this to be the same size as lov_user_ost_data_v1 */
378 struct lmv_user_mds_data {
379 struct lu_fid lum_fid;
387 LMV_DEFAULT_TYPE = 1,
390 #define lmv_user_md lmv_user_md_v1
391 struct lmv_user_md_v1 {
392 __u32 lum_magic; /* must be the first field */
393 __u32 lum_stripe_count; /* dirstripe count */
394 __u32 lum_stripe_offset; /* MDT idx for default dirstripe */
395 __u32 lum_hash_type; /* Dir stripe policy */
396 __u32 lum_type; /* LMV type: default or normal */
400 char lum_pool_name[LOV_MAXPOOLNAME];
401 struct lmv_user_mds_data lum_objects[0];
404 static inline int lmv_user_md_size(int stripes, int lmm_magic)
406 return sizeof(struct lmv_user_md) +
407 stripes * sizeof(struct lmv_user_mds_data);
410 extern void lustre_swab_lmv_user_md(struct lmv_user_md *lum);
412 struct ll_recreate_obj {
418 __u64 id; /* holds object id */
419 __u32 generation; /* holds object generation */
420 __u32 f_type; /* holds object type or stripe idx when passing it to
421 * OST for saving into EA. */
429 static inline bool obd_uuid_equals(const struct obd_uuid *u1,
430 const struct obd_uuid *u2)
432 return strcmp((char *)u1->uuid, (char *)u2->uuid) == 0;
435 static inline int obd_uuid_empty(struct obd_uuid *uuid)
437 return uuid->uuid[0] == '\0';
440 static inline void obd_str2uuid(struct obd_uuid *uuid, const char *tmp)
442 strncpy((char *)uuid->uuid, tmp, sizeof(*uuid));
443 uuid->uuid[sizeof(*uuid) - 1] = '\0';
446 /* For printf's only, make sure uuid is terminated */
447 static inline char *obd_uuid2str(const struct obd_uuid *uuid)
449 if (uuid->uuid[sizeof(*uuid) - 1] != '\0') {
450 /* Obviously not safe, but for printfs, no real harm done...
451 we're always null-terminated, even in a race. */
452 static char temp[sizeof(*uuid)];
453 memcpy(temp, uuid->uuid, sizeof(*uuid) - 1);
454 temp[sizeof(*uuid) - 1] = '\0';
457 return (char *)(uuid->uuid);
460 /* Extract fsname from uuid (or target name) of a target
461 e.g. (myfs-OST0007_UUID -> myfs)
462 see also deuuidify. */
463 static inline void obd_uuid2fsname(char *buf, char *uuid, int buflen)
467 strncpy(buf, uuid, buflen - 1);
468 buf[buflen - 1] = '\0';
469 p = strrchr(buf, '-');
474 /* printf display format
475 e.g. printf("file FID is "DFID"\n", PFID(fid)); */
476 #define FID_NOBRACE_LEN 40
477 #define FID_LEN (FID_NOBRACE_LEN + 2)
478 #define DFID_NOBRACE "%#llx:0x%x:0x%x"
479 #define DFID "["DFID_NOBRACE"]"
485 /* scanf input parse format -- strip '[' first.
486 e.g. sscanf(fidstr, SFID, RFID(&fid)); */
487 #define SFID "0x%llx:0x%x:0x%x"
494 /********* Quotas **********/
496 /* these must be explicitly translated into linux Q_* in ll_dir_ioctl */
497 #define LUSTRE_Q_QUOTAON 0x800002 /* turn quotas on */
498 #define LUSTRE_Q_QUOTAOFF 0x800003 /* turn quotas off */
499 #define LUSTRE_Q_GETINFO 0x800005 /* get information about quota files */
500 #define LUSTRE_Q_SETINFO 0x800006 /* set information about quota files */
501 #define LUSTRE_Q_GETQUOTA 0x800007 /* get user quota structure */
502 #define LUSTRE_Q_SETQUOTA 0x800008 /* set user quota structure */
503 /* lustre-specific control commands */
504 #define LUSTRE_Q_INVALIDATE 0x80000b /* invalidate quota data */
505 #define LUSTRE_Q_FINVALIDATE 0x80000c /* invalidate filter quota data */
507 #define UGQUOTA 2 /* set both USRQUOTA and GRPQUOTA */
509 struct if_quotacheck {
511 struct obd_uuid obd_uuid;
514 #define IDENTITY_DOWNCALL_MAGIC 0x6d6dd629
517 #define N_PERMS_MAX 64
519 struct perm_downcall_data {
525 struct identity_downcall_data {
532 struct perm_downcall_data idd_perms[N_PERMS_MAX];
536 /* for non-mapped uid/gid */
537 #define NOBODY_UID 99
538 #define NOBODY_GID 99
540 #define INVALID_ID (-1)
549 #ifdef NEED_QUOTA_DEFS
551 #define QIF_BLIMITS 1
553 #define QIF_ILIMITS 4
557 #define QIF_LIMITS (QIF_BLIMITS | QIF_ILIMITS)
558 #define QIF_USAGE (QIF_SPACE | QIF_INODES)
559 #define QIF_TIMES (QIF_BTIME | QIF_ITIME)
560 #define QIF_ALL (QIF_LIMITS | QIF_USAGE | QIF_TIMES)
563 #endif /* !__KERNEL__ */
565 /* lustre volatile file support
566 * file name header: .^L^S^T^R:volatile"
568 #define LUSTRE_VOLATILE_HDR ".\x0c\x13\x14\x12:VOLATILE"
569 #define LUSTRE_VOLATILE_HDR_LEN 14
570 /* hdr + MDT index */
571 #define LUSTRE_VOLATILE_IDX LUSTRE_VOLATILE_HDR":%.4X:"
573 typedef enum lustre_quota_version {
575 } lustre_quota_version_t;
577 /* XXX: same as if_dqinfo struct in kernel */
585 /* XXX: same as if_dqblk struct in kernel, plus one padding */
587 __u64 dqb_bhardlimit;
588 __u64 dqb_bsoftlimit;
590 __u64 dqb_ihardlimit;
591 __u64 dqb_isoftlimit;
613 struct obd_dqinfo qc_dqinfo;
614 struct obd_dqblk qc_dqblk;
616 struct obd_uuid obd_uuid;
619 /* swap layout flags */
620 #define SWAP_LAYOUTS_CHECK_DV1 (1 << 0)
621 #define SWAP_LAYOUTS_CHECK_DV2 (1 << 1)
622 #define SWAP_LAYOUTS_KEEP_MTIME (1 << 2)
623 #define SWAP_LAYOUTS_KEEP_ATIME (1 << 3)
625 /* Swap XATTR_NAME_HSM as well, only on the MDT so far */
626 #define SWAP_LAYOUTS_MDS_HSM (1 << 31)
627 struct lustre_swap_layouts {
636 /********* Changelogs **********/
637 /** Changelog record types */
638 enum changelog_rec_type {
640 CL_CREATE = 1, /* namespace */
641 CL_MKDIR = 2, /* namespace */
642 CL_HARDLINK = 3, /* namespace */
643 CL_SOFTLINK = 4, /* namespace */
644 CL_MKNOD = 5, /* namespace */
645 CL_UNLINK = 6, /* namespace */
646 CL_RMDIR = 7, /* namespace */
647 CL_RENAME = 8, /* namespace */
648 CL_EXT = 9, /* namespace extended record (2nd half of rename) */
649 CL_OPEN = 10, /* not currently used */
650 CL_CLOSE = 11, /* may be written to log only with mtime change */
651 CL_LAYOUT = 12, /* file layout/striping modified */
655 CL_HSM = 16, /* HSM specific events, see flags */
656 CL_MTIME = 17, /* Precedence: setattr > mtime > ctime > atime */
662 static inline const char *changelog_type2str(int type) {
663 static const char *changelog_str[] = {
664 "MARK", "CREAT", "MKDIR", "HLINK", "SLINK", "MKNOD", "UNLNK",
665 "RMDIR", "RENME", "RNMTO", "OPEN", "CLOSE", "LYOUT", "TRUNC",
666 "SATTR", "XATTR", "HSM", "MTIME", "CTIME", "ATIME",
669 if (type >= 0 && type < CL_LAST)
670 return changelog_str[type];
674 /* per-record flags */
675 #define CLF_VERSION 0x1000
676 #define CLF_EXT_VERSION 0x2000
677 #define CLF_FLAGSHIFT 12
678 #define CLF_FLAGMASK ((1U << CLF_FLAGSHIFT) - 1)
679 #define CLF_VERMASK (~CLF_FLAGMASK)
680 /* Anything under the flagmask may be per-type (if desired) */
681 /* Flags for unlink */
682 #define CLF_UNLINK_LAST 0x0001 /* Unlink of last hardlink */
683 #define CLF_UNLINK_HSM_EXISTS 0x0002 /* File has something in HSM */
684 /* HSM cleaning needed */
685 /* Flags for rename */
686 #define CLF_RENAME_LAST 0x0001 /* rename unlink last hardlink of target */
689 /* 12b used (from high weight to low weight):
694 #define CLF_HSM_ERR_L 0 /* HSM return code, 7 bits */
695 #define CLF_HSM_ERR_H 6
696 #define CLF_HSM_EVENT_L 7 /* HSM event, 3 bits, see enum hsm_event */
697 #define CLF_HSM_EVENT_H 9
698 #define CLF_HSM_FLAG_L 10 /* HSM flags, 2 bits, 1 used, 1 spare */
699 #define CLF_HSM_FLAG_H 11
700 #define CLF_HSM_SPARE_L 12 /* 4 spare bits */
701 #define CLF_HSM_SPARE_H 15
702 #define CLF_HSM_LAST 15
704 /* Remove bits higher than _h, then extract the value
705 * between _h and _l by shifting lower weigth to bit 0. */
706 #define CLF_GET_BITS(_b, _h, _l) (((_b << (CLF_HSM_LAST - _h)) & 0xFFFF) \
707 >> (CLF_HSM_LAST - _h + _l))
709 #define CLF_HSM_SUCCESS 0x00
710 #define CLF_HSM_MAXERROR 0x7E
711 #define CLF_HSM_ERROVERFLOW 0x7F
713 #define CLF_HSM_DIRTY 1 /* file is dirty after HSM request end */
715 /* 3 bits field => 8 values allowed */
727 static inline enum hsm_event hsm_get_cl_event(__u16 flags)
729 return CLF_GET_BITS(flags, CLF_HSM_EVENT_H, CLF_HSM_EVENT_L);
732 static inline void hsm_set_cl_event(int *flags, enum hsm_event he)
734 *flags |= (he << CLF_HSM_EVENT_L);
737 static inline __u16 hsm_get_cl_flags(int flags)
739 return CLF_GET_BITS(flags, CLF_HSM_FLAG_H, CLF_HSM_FLAG_L);
742 static inline void hsm_set_cl_flags(int *flags, int bits)
744 *flags |= (bits << CLF_HSM_FLAG_L);
747 static inline int hsm_get_cl_error(int flags)
749 return CLF_GET_BITS(flags, CLF_HSM_ERR_H, CLF_HSM_ERR_L);
752 static inline void hsm_set_cl_error(int *flags, int error)
754 *flags |= (error << CLF_HSM_ERR_L);
757 #define CR_MAXSIZE cfs_size_round(2*NAME_MAX + 1 + \
758 sizeof(struct changelog_ext_rec))
760 struct changelog_rec {
762 __u16 cr_flags; /**< (flags&CLF_FLAGMASK)|CLF_VERSION */
763 __u32 cr_type; /**< \a changelog_rec_type */
764 __u64 cr_index; /**< changelog record number */
765 __u64 cr_prev; /**< last index for this target fid */
768 lustre_fid cr_tfid; /**< target fid */
769 __u32 cr_markerflags; /**< CL_MARK flags */
771 lustre_fid cr_pfid; /**< parent fid */
772 char cr_name[0]; /**< last element */
773 } __attribute__((packed));
775 /* changelog_ext_rec is 2*sizeof(lu_fid) bigger than changelog_rec, to save
776 * space, only rename uses changelog_ext_rec, while others use changelog_rec to
779 struct changelog_ext_rec {
781 __u16 cr_flags; /**< (flags & CLF_FLAGMASK) |
783 __u32 cr_type; /**< \a changelog_rec_type */
784 __u64 cr_index; /**< changelog record number */
785 __u64 cr_prev; /**< last index for this target fid */
788 lustre_fid cr_tfid; /**< target fid */
789 __u32 cr_markerflags; /**< CL_MARK flags */
791 lustre_fid cr_pfid; /**< target parent fid */
792 lustre_fid cr_sfid; /**< source fid, or zero */
793 lustre_fid cr_spfid; /**< source parent fid, or zero */
794 char cr_name[0]; /**< last element */
795 } __attribute__((packed));
797 #define CHANGELOG_REC_EXTENDED(rec) \
798 (((rec)->cr_flags & CLF_VERMASK) == CLF_EXT_VERSION)
800 static inline int changelog_rec_size(struct changelog_rec *rec)
802 return CHANGELOG_REC_EXTENDED(rec) ? sizeof(struct changelog_ext_rec):
806 static inline char *changelog_rec_name(struct changelog_rec *rec)
808 return CHANGELOG_REC_EXTENDED(rec) ?
809 ((struct changelog_ext_rec *)rec)->cr_name: rec->cr_name;
812 static inline int changelog_rec_snamelen(struct changelog_ext_rec *rec)
814 return rec->cr_namelen - strlen(rec->cr_name) - 1;
817 static inline char *changelog_rec_sname(struct changelog_ext_rec *rec)
819 return rec->cr_name + strlen(rec->cr_name) + 1;
822 struct ioc_changelog {
829 enum changelog_message_type {
830 CL_RECORD = 10, /* message is a changelog_rec */
831 CL_EOF = 11, /* at end of current changelog */
834 /********* Misc **********/
836 struct ioc_data_version {
838 __u64 idv_flags; /* See LL_DV_xxx */
840 #define LL_DV_NOFLUSH 0x01 /* Do not take READ EXTENT LOCK before sampling
841 version. Dirty caches are left unchanged. */
844 # define offsetof(typ, memb) ((unsigned long)((char *)&(((typ *)0)->memb)))
847 #define dot_lustre_name ".lustre"
850 /********* HSM **********/
852 /** HSM per-file state
853 * See HSM_FLAGS below.
856 HS_EXISTS = 0x00000001,
857 HS_DIRTY = 0x00000002,
858 HS_RELEASED = 0x00000004,
859 HS_ARCHIVED = 0x00000008,
860 HS_NORELEASE = 0x00000010,
861 HS_NOARCHIVE = 0x00000020,
862 HS_LOST = 0x00000040,
865 /* HSM user-setable flags. */
866 #define HSM_USER_MASK (HS_NORELEASE | HS_NOARCHIVE | HS_DIRTY)
868 /* Other HSM flags. */
869 #define HSM_STATUS_MASK (HS_EXISTS | HS_LOST | HS_RELEASED | HS_ARCHIVED)
872 * All HSM-related possible flags that could be applied to a file.
873 * This should be kept in sync with hsm_states.
875 #define HSM_FLAGS_MASK (HSM_USER_MASK | HSM_STATUS_MASK)
878 * HSMÂ request progress state
880 enum hsm_progress_states {
887 static inline char *hsm_progress_state2name(enum hsm_progress_states s)
890 case HPS_WAITING: return "waiting";
891 case HPS_RUNNING: return "running";
892 case HPS_DONE: return "done";
893 default: return "unknown";
900 } __attribute__((packed));
903 * Current HSM states of a Lustre file.
905 * This structure purpose is to be sent to user-space mainly. It describes the
906 * current HSM flags and in-progress action.
908 struct hsm_user_state {
909 /** Current HSM states, from enum hsm_states. */
911 __u32 hus_archive_id;
912 /** The current undergoing action, if there is one */
913 __u32 hus_in_progress_state;
914 __u32 hus_in_progress_action;
915 struct hsm_extent hus_in_progress_location;
916 char hus_extended_info[];
919 struct hsm_state_set_ioc {
920 struct lu_fid hssi_fid;
922 __u64 hssi_clearmask;
926 * This structure describes the current in-progress action for a file.
927 * it is returned to user space and send over the wire
929 struct hsm_current_action {
930 /** The current undergoing action, if there is one */
931 /* state is one of hsm_progress_states */
933 /* action is one of hsm_user_action */
935 struct hsm_extent hca_location;
938 /***** HSM user requests ******/
939 /* User-generated (lfs/ioctl) request types */
940 enum hsm_user_action {
941 HUA_NONE = 1, /* no action (noop) */
942 HUA_ARCHIVE = 10, /* copy to hsm */
943 HUA_RESTORE = 11, /* prestage */
944 HUA_RELEASE = 12, /* drop ost objects */
945 HUA_REMOVE = 13, /* remove from archive */
946 HUA_CANCEL = 14 /* cancel a request */
949 static inline char *hsm_user_action2name(enum hsm_user_action a)
952 case HUA_NONE: return "NOOP";
953 case HUA_ARCHIVE: return "ARCHIVE";
954 case HUA_RESTORE: return "RESTORE";
955 case HUA_RELEASE: return "RELEASE";
956 case HUA_REMOVE: return "REMOVE";
957 case HUA_CANCEL: return "CANCEL";
958 default: return "UNKNOWN";
963 * List of hr_flags (bit field)
965 #define HSM_FORCE_ACTION 0x0001
966 /* used by CT, connot be set by user */
967 #define HSM_GHOST_COPY 0x0002
970 * Contains all the fixed part of struct hsm_user_request.
974 __u32 hr_action; /* enum hsm_user_action */
975 __u32 hr_archive_id; /* archive id, used only with HUA_ARCHIVE */
976 __u64 hr_flags; /* request flags */
977 __u32 hr_itemcount; /* item count in hur_user_item vector */
981 struct hsm_user_item {
983 struct hsm_extent hui_extent;
984 } __attribute__((packed));
986 struct hsm_user_request {
987 struct hsm_request hur_request;
988 struct hsm_user_item hur_user_item[0];
989 /* extra data blob at end of struct (after all
990 * hur_user_items), only use helpers to access it
992 } __attribute__((packed));
994 /** Return pointer to data field in a hsm user request */
995 static inline void *hur_data(struct hsm_user_request *hur)
997 return &(hur->hur_user_item[hur->hur_request.hr_itemcount]);
1001 * Compute the current length of the provided hsm_user_request. This returns -1
1002 * instead of an errno because ssize_t is defined to be only [ -1, SSIZE_MAX ]
1004 * return -1 on bounds check error.
1006 static inline ssize_t hur_len(struct hsm_user_request *hur)
1010 /* can't overflow a __u64 since hr_itemcount is only __u32 */
1011 size = offsetof(struct hsm_user_request, hur_user_item[0]) +
1012 (__u64)hur->hur_request.hr_itemcount *
1013 sizeof(hur->hur_user_item[0]) + hur->hur_request.hr_data_len;
1015 if (size != (ssize_t)size)
1021 /****** HSM RPCs to copytool *****/
1022 /* Message types the copytool may receive */
1023 enum hsm_message_type {
1024 HMT_ACTION_LIST = 100, /* message is a hsm_action_list */
1027 /* Actions the copytool may be instructed to take for a given action_item */
1028 enum hsm_copytool_action {
1029 HSMA_NONE = 10, /* no action */
1030 HSMA_ARCHIVE = 20, /* arbitrary offset */
1036 static inline char *hsm_copytool_action2name(enum hsm_copytool_action a)
1039 case HSMA_NONE: return "NOOP";
1040 case HSMA_ARCHIVE: return "ARCHIVE";
1041 case HSMA_RESTORE: return "RESTORE";
1042 case HSMA_REMOVE: return "REMOVE";
1043 case HSMA_CANCEL: return "CANCEL";
1044 default: return "UNKNOWN";
1048 /* Copytool item action description */
1049 struct hsm_action_item {
1050 __u32 hai_len; /* valid size of this struct */
1051 __u32 hai_action; /* hsm_copytool_action, but use known size */
1052 lustre_fid hai_fid; /* Lustre FID to operated on */
1053 lustre_fid hai_dfid; /* fid used for data access */
1054 struct hsm_extent hai_extent; /* byte range to operate on */
1055 __u64 hai_cookie; /* action cookie from coordinator */
1056 __u64 hai_gid; /* grouplock id */
1057 char hai_data[0]; /* variable length */
1058 } __attribute__((packed));
1061 * helper function which print in hexa the first bytes of
1063 * \param hai [IN] record to print
1064 * \param buffer [OUT] output buffer
1065 * \param len [IN] max buffer len
1068 static inline char *hai_dump_data_field(struct hsm_action_item *hai,
1069 char *buffer, int len)
1071 int i, sz, data_len;
1076 data_len = hai->hai_len - sizeof(*hai);
1077 for (i = 0 ; (i < data_len) && (sz > 0) ; i++) {
1080 cnt = snprintf(ptr, sz, "%.2X",
1081 (unsigned char)hai->hai_data[i]);
1089 /* Copytool action list */
1090 #define HAL_VERSION 1
1091 #define HAL_MAXSIZE LNET_MTU /* bytes, used in userspace only */
1092 struct hsm_action_list {
1094 __u32 hal_count; /* number of hai's to follow */
1095 __u64 hal_compound_id; /* returned by coordinator */
1097 __u32 hal_archive_id; /* which archive backend */
1099 char hal_fsname[0]; /* null-terminated */
1100 /* struct hsm_action_item[hal_count] follows, aligned on 8-byte
1101 boundaries. See hai_zero */
1102 } __attribute__((packed));
1104 #ifndef HAVE_CFS_SIZE_ROUND
1105 static inline int cfs_size_round (int val)
1107 return (val + 7) & (~0x7);
1109 #define HAVE_CFS_SIZE_ROUND
1112 /* Return pointer to first hai in action list */
1113 static inline struct hsm_action_item *hai_zero(struct hsm_action_list *hal)
1115 return (struct hsm_action_item *)(hal->hal_fsname +
1116 cfs_size_round(strlen(hal-> \
1120 /* Return pointer to next hai */
1121 static inline struct hsm_action_item *hai_next(struct hsm_action_item *hai)
1123 return (struct hsm_action_item *)((char *)hai +
1124 cfs_size_round(hai->hai_len));
1127 /* Return size of an hsm_action_list */
1128 static inline int hal_size(struct hsm_action_list *hal)
1131 struct hsm_action_item *hai;
1133 sz = sizeof(*hal) + cfs_size_round(strlen(hal->hal_fsname) + 1);
1134 hai = hai_zero(hal);
1135 for (i = 0; i < hal->hal_count; i++, hai = hai_next(hai))
1136 sz += cfs_size_round(hai->hai_len);
1142 * describe the attributes to be set on imported file
1144 struct hsm_user_import {
1153 __u32 hui_archive_id;
1156 /* Copytool progress reporting */
1157 #define HP_FLAG_COMPLETED 0x01
1158 #define HP_FLAG_RETRY 0x02
1160 struct hsm_progress {
1163 struct hsm_extent hp_extent;
1165 __u16 hp_errval; /* positive val */
1170 __u64 hc_data_version;
1172 __u16 hc_errval; /* positive val */
1174 struct hsm_action_item hc_hai;
1177 /** @} lustreuser */
1179 #endif /* _LUSTRE_USER_H */