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.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2010, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/include/lustre/lustre_user.h
34 * Lustre public user-space interface definitions.
37 #ifndef _LUSTRE_USER_H
38 #define _LUSTRE_USER_H
40 /** \defgroup lustreuser lustreuser
45 #include <linux/kernel.h>
46 #include <linux/types.h>
49 # include <linux/fs.h>
50 # include <linux/quota.h>
51 # include <linux/string.h> /* snprintf() */
52 # include <linux/version.h>
53 # include <uapi/linux/lustre/lustre_fiemap.h>
54 #else /* !__KERNEL__ */
57 # include <stdio.h> /* snprintf() */
60 # define NEED_QUOTA_DEFS
61 /* # include <sys/quota.h> - this causes complaints about caddr_t */
62 # include <sys/stat.h>
63 # include <linux/lustre/lustre_fiemap.h>
64 #endif /* __KERNEL__ */
66 /* Handle older distros */
67 #ifndef __ALIGN_KERNEL
68 # define __ALIGN_KERNEL(x, a) __ALIGN_KERNEL_MASK(x, (typeof(x))(a) - 1)
69 # define __ALIGN_KERNEL_MASK(x, mask) (((x) + (mask)) & ~(mask))
72 #if defined(__cplusplus)
77 * This is a temporary solution of adding quota type.
78 * Should be removed as soon as system header is updated.
81 #define LL_MAXQUOTAS 3
83 #define INITQFNAMES { \
84 "user", /* USRQUOTA */ \
85 "group", /* GRPQUOTA */ \
86 "project", /* PRJQUOTA */ \
100 * We need to always use 64bit version because the structure
101 * is shared across entire cluster where 32bit and 64bit machines
104 #if __BITS_PER_LONG != 64 || defined(__ARCH_WANT_STAT64)
105 typedef struct stat64 lstat_t;
106 #define lstat_f lstat64
107 #define fstat_f fstat64
108 #define fstatat_f fstatat64
110 typedef struct stat lstat_t;
111 #define lstat_f lstat
112 #define fstat_f fstat
113 #define fstatat_f fstatat
116 #ifndef STATX_BASIC_STATS
118 * Timestamp structure for the timestamps in struct statx.
120 * tv_sec holds the number of seconds before (negative) or after (positive)
121 * 00:00:00 1st January 1970 UTC.
123 * tv_nsec holds a number of nanoseconds (0..999,999,999) after the tv_sec time.
125 * __reserved is held in case we need a yet finer resolution.
127 struct statx_timestamp {
134 * Structures for the extended file attribute retrieval system call
137 * The caller passes a mask of what they're specifically interested in as a
138 * parameter to statx(). What statx() actually got will be indicated in
139 * st_mask upon return.
141 * For each bit in the mask argument:
143 * - if the datum is not supported:
145 * - the bit will be cleared, and
147 * - the datum will be set to an appropriate fabricated value if one is
148 * available (eg. CIFS can take a default uid and gid), otherwise
150 * - the field will be cleared;
152 * - otherwise, if explicitly requested:
154 * - the datum will be synchronised to the server if AT_STATX_FORCE_SYNC is
155 * set or if the datum is considered out of date, and
157 * - the field will be filled in and the bit will be set;
159 * - otherwise, if not requested, but available in approximate form without any
160 * effort, it will be filled in anyway, and the bit will be set upon return
161 * (it might not be up to date, however, and no attempt will be made to
162 * synchronise the internal state first);
164 * - otherwise the field and the bit will be cleared before returning.
166 * Items in STATX_BASIC_STATS may be marked unavailable on return, but they
167 * will have values installed for compatibility purposes so that stat() and
168 * co. can be emulated in userspace.
172 __u32 stx_mask; /* What results were written [uncond] */
173 __u32 stx_blksize; /* Preferred general I/O size [uncond] */
174 __u64 stx_attributes; /* Flags conveying information about the file [uncond] */
176 __u32 stx_nlink; /* Number of hard links */
177 __u32 stx_uid; /* User ID of owner */
178 __u32 stx_gid; /* Group ID of owner */
179 __u16 stx_mode; /* File mode */
182 __u64 stx_ino; /* Inode number */
183 __u64 stx_size; /* File size */
184 __u64 stx_blocks; /* Number of 512-byte blocks allocated */
185 __u64 stx_attributes_mask; /* Mask to show what's supported in stx_attributes */
187 struct statx_timestamp stx_atime; /* Last access time */
188 struct statx_timestamp stx_btime; /* File creation time */
189 struct statx_timestamp stx_ctime; /* Last attribute change time */
190 struct statx_timestamp stx_mtime; /* Last data modification time */
192 __u32 stx_rdev_major; /* Device ID of special file [if bdev/cdev] */
193 __u32 stx_rdev_minor;
194 __u32 stx_dev_major; /* ID of device containing file [uncond] */
197 __u64 __spare2[14]; /* Spare space for future expansion */
202 * Flags to be stx_mask
204 * Query request/result mask for statx() and struct statx::stx_mask.
206 * These bits should be set in the mask argument of statx() to request
207 * particular items when calling statx().
209 #define STATX_TYPE 0x00000001U /* Want/got stx_mode & S_IFMT */
210 #define STATX_MODE 0x00000002U /* Want/got stx_mode & ~S_IFMT */
211 #define STATX_NLINK 0x00000004U /* Want/got stx_nlink */
212 #define STATX_UID 0x00000008U /* Want/got stx_uid */
213 #define STATX_GID 0x00000010U /* Want/got stx_gid */
214 #define STATX_ATIME 0x00000020U /* Want/got stx_atime */
215 #define STATX_MTIME 0x00000040U /* Want/got stx_mtime */
216 #define STATX_CTIME 0x00000080U /* Want/got stx_ctime */
217 #define STATX_INO 0x00000100U /* Want/got stx_ino */
218 #define STATX_SIZE 0x00000200U /* Want/got stx_size */
219 #define STATX_BLOCKS 0x00000400U /* Want/got stx_blocks */
220 #define STATX_BASIC_STATS 0x000007ffU /* The stuff in the normal stat struct */
221 #define STATX_BTIME 0x00000800U /* Want/got stx_btime */
222 #define STATX_ALL 0x00000fffU /* All currently supported flags */
223 #define STATX__RESERVED 0x80000000U /* Reserved for future struct statx expansion */
226 * Attributes to be found in stx_attributes and masked in stx_attributes_mask.
228 * These give information about the features or the state of a file that might
229 * be of use to ordinary userspace programs such as GUIs or ls rather than
232 * Note that the flags marked [I] correspond to generic FS_IOC_FLAGS
233 * semantically. Where possible, the numerical value is picked to correspond
236 #define STATX_ATTR_COMPRESSED 0x00000004 /* [I] File is compressed by the fs */
237 #define STATX_ATTR_IMMUTABLE 0x00000010 /* [I] File is marked immutable */
238 #define STATX_ATTR_APPEND 0x00000020 /* [I] File is append-only */
239 #define STATX_ATTR_NODUMP 0x00000040 /* [I] File is not to be dumped */
240 #define STATX_ATTR_ENCRYPTED 0x00000800 /* [I] File requires key to decrypt in fs */
242 #define STATX_ATTR_AUTOMOUNT 0x00001000 /* Dir: Automount trigger */
246 typedef struct statx lstatx_t;
248 #define HAVE_LOV_USER_MDS_DATA
250 #define LUSTRE_EOF 0xffffffffffffffffULL
253 #define LL_SUPER_MAGIC 0x0BD00BD0
255 #define FSFILT_IOC_GETVERSION _IOR('f', 3, long)
257 /* FIEMAP flags supported by Lustre */
258 #define LUSTRE_FIEMAP_FLAGS_COMPAT (FIEMAP_FLAG_SYNC | FIEMAP_FLAG_DEVICE_ORDER)
260 enum obd_statfs_state {
261 OS_STATE_DEGRADED = 0x00000001, /**< RAID degraded/rebuilding */
262 OS_STATE_READONLY = 0x00000002, /**< filesystem is read-only */
263 OS_STATE_NOPRECREATE = 0x00000004, /**< no object precreation */
264 OS_STATE_UNUSED1 = 0x00000008, /**< obsolete 1.6, was EROFS=30 */
265 OS_STATE_UNUSED2 = 0x00000010, /**< obsolete 1.6, was EROFS=30 */
266 OS_STATE_ENOSPC = 0x00000020, /**< not enough free space */
267 OS_STATE_ENOINO = 0x00000040, /**< not enough inodes */
268 OS_STATE_SUM = 0x00000100, /**< aggregated for all tagrets */
269 OS_STATE_NONROT = 0x00000200, /**< non-rotational device */
272 /** filesystem statistics/attributes for target device */
274 __u64 os_type; /* EXT4_SUPER_MAGIC, UBERBLOCK_MAGIC */
275 __u64 os_blocks; /* total size in #os_bsize blocks */
276 __u64 os_bfree; /* number of unused blocks */
277 __u64 os_bavail; /* blocks available for allocation */
278 __u64 os_files; /* total number of objects */
279 __u64 os_ffree; /* # objects that could be created */
280 __u8 os_fsid[40]; /* identifier for filesystem */
281 __u32 os_bsize; /* block size in bytes for os_blocks */
282 __u32 os_namelen; /* maximum length of filename in bytes*/
283 __u64 os_maxbytes; /* maximum object size in bytes */
284 __u32 os_state; /**< obd_statfs_state OS_STATE_* flag */
285 __u32 os_fprecreated; /* objs available now to the caller */
286 /* used in QoS code to find preferred
288 __u32 os_granted; /* space granted for MDS */
289 __u32 os_spare3; /* Unused padding fields. Remember */
290 __u32 os_spare4; /* to fix lustre_swab_obd_statfs() */
298 /** additional filesystem attributes for target device */
299 struct obd_statfs_info {
300 __u32 os_reserved_mb_low; /* reserved mb low */
301 __u32 os_reserved_mb_high; /* reserved mb high */
302 bool os_enable_pre; /* enable pre create logic */
308 * FID is a cluster-wide unique identifier of a file or an object (stripe).
309 * FIDs are never reused.
313 * FID sequence. Sequence is a unit of migration: all files (objects)
314 * with FIDs from a given sequence are stored on the same server.
315 * Lustre should support 2^64 objects, so even if each sequence
316 * has only a single object we can still enumerate 2^64 objects.
319 /* FID number within sequence. */
322 * FID version, used to distinguish different versions (in the sense
323 * of snapshots, etc.) of the same file system object. Not currently
329 static inline bool fid_is_zero(const struct lu_fid *fid)
331 return fid->f_seq == 0 && fid->f_oid == 0;
334 /* Currently, the filter_fid::ff_parent::f_ver is not the real parent
335 * MDT-object's FID::f_ver, instead it is the OST-object index in its
336 * parent MDT-object's layout EA. */
337 #define f_stripe_idx f_ver
340 __u32 ol_stripe_size;
341 __u32 ol_stripe_count;
345 } __attribute__((packed));
347 /* The filter_fid structure has changed several times over its lifetime.
348 * For a long time "trusted.fid" held the MDT inode parent FID/IGIF and
349 * stripe_index and the "self FID" (objid/seq) to be able to recover the
350 * OST objects in case of corruption. With the move to 2.4 and OSD-API for
351 * the OST, the "trusted.lma" xattr was added to the OST objects to store
352 * the "self FID" to be consistent with the MDT on-disk format, and the
353 * filter_fid only stored the MDT inode parent FID and stripe index.
355 * In 2.10, the addition of PFL composite layouts required more information
356 * to be stored into the filter_fid in order to be able to identify which
357 * component the OST object belonged. As well, the stripe size may vary
358 * between components, so it was no longer safe to assume the stripe size
359 * or stripe_count of a file. This is also more robust for plain layouts.
361 * For ldiskfs OSTs that were formatted with 256-byte inodes, there is not
362 * enough space to store both the filter_fid and LMA in the inode, so they
363 * are packed into struct lustre_ost_attrs on disk in trusted.lma to avoid
364 * an extra seek for every OST object access.
366 * In 2.11, FLR mirror layouts also need to store the layout version and
367 * range so that writes to old versions of the layout are not allowed.
368 * That ensures that mirrored objects are not modified by evicted clients,
369 * and ensures that the components are correctly marked stale on the MDT.
371 struct filter_fid_18_23 {
372 struct lu_fid ff_parent; /* stripe_idx in f_ver */
377 struct filter_fid_24_29 {
378 struct lu_fid ff_parent; /* stripe_idx in f_ver */
381 struct filter_fid_210 {
382 struct lu_fid ff_parent; /* stripe_idx in f_ver */
383 struct ost_layout ff_layout;
387 struct lu_fid ff_parent; /* stripe_idx in f_ver */
388 struct ost_layout ff_layout;
389 __u32 ff_layout_version;
390 __u32 ff_range; /* range of layout version that
391 * write are allowed */
392 } __attribute__((packed));
394 /* Userspace should treat lu_fid as opaque, and only use the following methods
395 * to print or parse them. Other functions (e.g. compare, swab) could be moved
396 * here from lustre_idl.h if needed. */
400 LMAC_HSM = 0x00000001,
401 /* LMAC_SOM = 0x00000002, obsolete since 2.8.0 */
402 LMAC_NOT_IN_OI = 0x00000004, /* the object does NOT need OI mapping */
403 LMAC_FID_ON_OST = 0x00000008, /* For OST-object, its OI mapping is
404 * under /O/<seq>/d<x>. */
405 LMAC_STRIPE_INFO = 0x00000010, /* stripe info in the LMA EA. */
406 LMAC_COMP_INFO = 0x00000020, /* Component info in the LMA EA. */
407 LMAC_IDX_BACKUP = 0x00000040, /* Has index backup. */
411 * Masks for all features that should be supported by a Lustre version to
412 * access a specific file.
413 * This information is stored in lustre_mdt_attrs::lma_incompat.
416 LMAI_RELEASED = 0x00000001, /* file is released */
417 LMAI_AGENT = 0x00000002, /* agent inode */
418 LMAI_REMOTE_PARENT = 0x00000004, /* the parent of the object
419 is on the remote MDT */
420 LMAI_STRIPED = 0x00000008, /* striped directory inode */
421 LMAI_ORPHAN = 0x00000010, /* inode is orphan */
422 LMA_INCOMPAT_SUPP = (LMAI_AGENT | LMAI_REMOTE_PARENT | \
423 LMAI_STRIPED | LMAI_ORPHAN)
428 * Following struct for object attributes, that will be kept inode's EA.
429 * Introduced in 2.0 release (please see b15993, for details)
430 * Added to all objects since Lustre 2.4 as contains self FID
432 struct lustre_mdt_attrs {
434 * Bitfield for supported data in this structure. From enum lma_compat.
435 * lma_self_fid and lma_flags are always available.
439 * Per-file incompat feature list. Lustre version should support all
440 * flags set in this field. The supported feature mask is available in
444 /** FID of this inode */
445 struct lu_fid lma_self_fid;
448 struct lustre_ost_attrs {
449 /* Use lustre_mdt_attrs directly for now, need a common header
450 * structure if want to change lustre_mdt_attrs in future. */
451 struct lustre_mdt_attrs loa_lma;
453 /* Below five elements are for OST-object's PFID EA, the
454 * lma_parent_fid::f_ver is composed of the stripe_count (high 16 bits)
455 * and the stripe_index (low 16 bits), the size should not exceed
456 * 5 * sizeof(__u64)) to be accessable by old Lustre. If the flag
457 * LMAC_STRIPE_INFO is set, then loa_parent_fid and loa_stripe_size
458 * are valid; if the flag LMAC_COMP_INFO is set, then the next three
459 * loa_comp_* elements are valid. */
460 struct lu_fid loa_parent_fid;
461 __u32 loa_stripe_size;
463 __u64 loa_comp_start;
468 * Prior to 2.4, the LMA structure also included SOM attributes which has since
469 * been moved to a dedicated xattr
470 * lma_flags was also removed because of lma_compat/incompat fields.
472 #define LMA_OLD_SIZE (sizeof(struct lustre_mdt_attrs) + 5 * sizeof(__u64))
474 enum lustre_som_flags {
475 /* Unknow or no SoM data, must get size from OSTs. */
476 SOM_FL_UNKNOWN = 0x0000,
477 /* Known strictly correct, FLR or DoM file (SoM guaranteed). */
478 SOM_FL_STRICT = 0x0001,
479 /* Known stale - was right at some point in the past, but it is
480 * known (or likely) to be incorrect now (e.g. opened for write). */
481 SOM_FL_STALE = 0x0002,
482 /* Approximate, may never have been strictly correct,
483 * need to sync SOM data to achieve eventual consistency. */
484 SOM_FL_LAZY = 0x0004,
487 struct lustre_som_attrs {
489 __u16 lsa_reserved[3];
495 * OST object IDentifier.
503 struct lu_fid oi_fid;
507 #define DOSTID "%#llx:%llu"
508 #define POSTID(oi) ((unsigned long long)ostid_seq(oi)), \
509 ((unsigned long long)ostid_id(oi))
511 struct ll_futimes_3 {
513 __u64 lfu_atime_nsec;
515 __u64 lfu_mtime_nsec;
517 __u64 lfu_ctime_nsec;
521 * Maximum number of mirrors currently implemented.
523 #define LUSTRE_MIRROR_COUNT_MAX 16
525 /* Lease types for use as arg and return of LL_IOC_{GET,SET}_LEASE ioctl. */
527 LL_LEASE_RDLCK = 0x01,
528 LL_LEASE_WRLCK = 0x02,
529 LL_LEASE_UNLCK = 0x04,
532 enum ll_lease_flags {
533 LL_LEASE_RESYNC = 0x1,
534 LL_LEASE_RESYNC_DONE = 0x2,
535 LL_LEASE_LAYOUT_MERGE = 0x4,
536 LL_LEASE_LAYOUT_SPLIT = 0x8,
537 LL_LEASE_PCC_ATTACH = 0x10,
540 #define IOC_IDS_MAX 4096
541 struct ll_ioc_lease {
548 struct ll_ioc_lease_id {
559 * The ioctl naming rules:
560 * LL_* - works on the currently opened filehandle instead of parent dir
561 * *_OBD_* - gets data for both OSC or MDC (LOV, LMV indirectly)
562 * *_MDC_* - gets/sets data related to MDC
563 * *_LOV_* - gets/sets data related to OSC/LOV
564 * *FILE* - called on parent dir and passes in a filename
565 * *STRIPE* - set/get lov_user_md
566 * *INFO - set/get lov_user_mds_data
568 /* lustre_ioctl.h 101-150 */
569 #define LL_IOC_GETFLAGS _IOR ('f', 151, long)
570 #define LL_IOC_SETFLAGS _IOW ('f', 152, long)
571 #define LL_IOC_CLRFLAGS _IOW ('f', 153, long)
572 #define LL_IOC_LOV_SETSTRIPE _IOW ('f', 154, long)
573 #define LL_IOC_LOV_SETSTRIPE_NEW _IOWR('f', 154, struct lov_user_md)
574 #define LL_IOC_LOV_GETSTRIPE _IOW ('f', 155, long)
575 #define LL_IOC_LOV_GETSTRIPE_NEW _IOR('f', 155, struct lov_user_md)
576 #define LL_IOC_LOV_SETEA _IOW ('f', 156, long)
577 /* LL_IOC_RECREATE_OBJ 157 obsolete */
578 /* LL_IOC_RECREATE_FID 157 obsolete */
579 #define LL_IOC_GROUP_LOCK _IOW ('f', 158, long)
580 #define LL_IOC_GROUP_UNLOCK _IOW ('f', 159, long)
581 /* LL_IOC_QUOTACHECK 160 OBD_IOC_QUOTACHECK */
582 /* LL_IOC_POLL_QUOTACHECK 161 OBD_IOC_POLL_QUOTACHECK */
583 /* LL_IOC_QUOTACTL 162 OBD_IOC_QUOTACTL */
584 #define IOC_OBD_STATFS _IOWR('f', 164, struct obd_statfs *)
585 /* IOC_LOV_GETINFO 165 obsolete */
586 #define LL_IOC_FLUSHCTX _IOW ('f', 166, long)
587 /* LL_IOC_RMTACL 167 obsolete */
588 #define LL_IOC_GETOBDCOUNT _IOR ('f', 168, long)
589 #define LL_IOC_LLOOP_ATTACH _IOWR('f', 169, long)
590 #define LL_IOC_LLOOP_DETACH _IOWR('f', 170, long)
591 #define LL_IOC_LLOOP_INFO _IOWR('f', 171, struct lu_fid)
592 #define LL_IOC_LLOOP_DETACH_BYDEV _IOWR('f', 172, long)
593 #define LL_IOC_PATH2FID _IOR ('f', 173, long)
594 #define LL_IOC_GET_CONNECT_FLAGS _IOWR('f', 174, __u64 *)
595 #define LL_IOC_GET_MDTIDX _IOR ('f', 175, int)
596 #define LL_IOC_FUTIMES_3 _IOWR('f', 176, struct ll_futimes_3)
597 #define LL_IOC_FLR_SET_MIRROR _IOW ('f', 177, long)
598 /* lustre_ioctl.h 177-210 */
599 #define LL_IOC_HSM_STATE_GET _IOR('f', 211, struct hsm_user_state)
600 #define LL_IOC_HSM_STATE_SET _IOW('f', 212, struct hsm_state_set)
601 #define LL_IOC_HSM_CT_START _IOW('f', 213, struct lustre_kernelcomm)
602 #define LL_IOC_HSM_COPY_START _IOW('f', 214, struct hsm_copy *)
603 #define LL_IOC_HSM_COPY_END _IOW('f', 215, struct hsm_copy *)
604 #define LL_IOC_HSM_PROGRESS _IOW('f', 216, struct hsm_user_request)
605 #define LL_IOC_HSM_REQUEST _IOW('f', 217, struct hsm_user_request)
606 #define LL_IOC_DATA_VERSION _IOR('f', 218, struct ioc_data_version)
607 #define LL_IOC_LOV_SWAP_LAYOUTS _IOW('f', 219, \
608 struct lustre_swap_layouts)
609 #define LL_IOC_HSM_ACTION _IOR('f', 220, \
610 struct hsm_current_action)
611 /* lustre_ioctl.h 221-232 */
612 #define LL_IOC_LMV_SETSTRIPE _IOWR('f', 240, struct lmv_user_md)
613 #define LL_IOC_LMV_GETSTRIPE _IOWR('f', 241, struct lmv_user_md)
614 #define LL_IOC_REMOVE_ENTRY _IOWR('f', 242, __u64)
615 #define LL_IOC_RMFID _IOR('f', 242, struct fid_array)
616 #define LL_IOC_SET_LEASE _IOWR('f', 243, struct ll_ioc_lease)
617 #define LL_IOC_SET_LEASE_OLD _IOWR('f', 243, long)
618 #define LL_IOC_GET_LEASE _IO('f', 244)
619 #define LL_IOC_HSM_IMPORT _IOWR('f', 245, struct hsm_user_import)
620 #define LL_IOC_LMV_SET_DEFAULT_STRIPE _IOWR('f', 246, struct lmv_user_md)
621 #define LL_IOC_MIGRATE _IOR('f', 247, int)
622 #define LL_IOC_FID2MDTIDX _IOWR('f', 248, struct lu_fid)
623 #define LL_IOC_GETPARENT _IOWR('f', 249, struct getparent)
624 #define LL_IOC_LADVISE _IOR('f', 250, struct llapi_lu_ladvise)
625 #define LL_IOC_HEAT_GET _IOWR('f', 251, struct lu_heat)
626 #define LL_IOC_HEAT_SET _IOW('f', 251, __u64)
627 #define LL_IOC_PCC_DETACH _IOW('f', 252, struct lu_pcc_detach)
628 #define LL_IOC_PCC_DETACH_BY_FID _IOW('f', 252, struct lu_pcc_detach_fid)
629 #define LL_IOC_PCC_STATE _IOR('f', 252, struct lu_pcc_state)
631 #ifndef FS_IOC_FSGETXATTR
633 * Structure for FS_IOC_FSGETXATTR and FS_IOC_FSSETXATTR.
636 __u32 fsx_xflags; /* xflags field value (get/set) */
637 __u32 fsx_extsize; /* extsize field value (get/set)*/
638 __u32 fsx_nextents; /* nextents field value (get) */
639 __u32 fsx_projid; /* project identifier (get/set) */
640 unsigned char fsx_pad[12];
642 #define FS_IOC_FSGETXATTR _IOR('X', 31, struct fsxattr)
643 #define FS_IOC_FSSETXATTR _IOW('X', 32, struct fsxattr)
645 #define LL_IOC_FSGETXATTR FS_IOC_FSGETXATTR
646 #define LL_IOC_FSSETXATTR FS_IOC_FSSETXATTR
647 #ifndef FS_XFLAG_PROJINHERIT
648 #define FS_XFLAG_PROJINHERIT 0x00000200
652 #define LL_STATFS_LMV 1
653 #define LL_STATFS_LOV 2
654 #define LL_STATFS_NODELAY 4
656 #define IOC_MDC_TYPE 'i'
657 #define IOC_MDC_LOOKUP _IOWR(IOC_MDC_TYPE, 20, struct obd_device *)
658 #define IOC_MDC_GETFILESTRIPE _IOWR(IOC_MDC_TYPE, 21, struct lov_user_md *)
659 #ifdef HAVE_LOV_USER_MDS_DATA
660 #define IOC_MDC_GETFILEINFO_OLD _IOWR(IOC_MDC_TYPE, 22, struct lov_user_mds_data_v1 *)
661 #define IOC_MDC_GETFILEINFO _IOWR(IOC_MDC_TYPE, 22, struct lov_user_mds_data)
662 #define LL_IOC_MDC_GETINFO_OLD _IOWR(IOC_MDC_TYPE, 23, struct lov_user_mds_data_v1 *)
663 #define LL_IOC_MDC_GETINFO _IOWR(IOC_MDC_TYPE, 23, struct lov_user_mds_data)
666 #define MAX_OBD_NAME 128 /* If this changes, a NEW ioctl must be added */
668 /* Define O_LOV_DELAY_CREATE to be a mask that is not useful for regular
669 * files, but are unlikely to be used in practice and are not harmful if
670 * used incorrectly. O_NOCTTY and FASYNC are only meaningful for character
671 * devices and are safe for use on new files. See LU-4209. */
672 /* To be compatible with old statically linked binary we keep the check for
673 * the older 0100000000 flag. This is already removed upstream. LU-812. */
674 #define O_LOV_DELAY_CREATE_1_8 0100000000 /* FMODE_NONOTIFY masked in 2.6.36 */
676 #define FASYNC 00020000 /* fcntl, for BSD compatibility */
678 #define O_LOV_DELAY_CREATE_MASK (O_NOCTTY | FASYNC)
679 #define O_LOV_DELAY_CREATE (O_LOV_DELAY_CREATE_1_8 | \
680 O_LOV_DELAY_CREATE_MASK)
682 #define LL_FILE_IGNORE_LOCK 0x00000001
683 #define LL_FILE_GROUP_LOCKED 0x00000002
684 #define LL_FILE_READAHEA 0x00000004
685 #define LL_FILE_LOCKED_DIRECTIO 0x00000008 /* client-side locks with dio */
686 #define LL_FILE_LOCKLESS_IO 0x00000010 /* server-side locks with cio */
687 #define LL_FILE_FLOCK_WARNING 0x00000020 /* warned about disabled flock */
689 #define LOV_USER_MAGIC_V1 0x0BD10BD0
690 #define LOV_USER_MAGIC LOV_USER_MAGIC_V1
691 #define LOV_USER_MAGIC_JOIN_V1 0x0BD20BD0
692 #define LOV_USER_MAGIC_V3 0x0BD30BD0
693 /* 0x0BD40BD0 is occupied by LOV_MAGIC_MIGRATE */
694 #define LOV_USER_MAGIC_SPECIFIC 0x0BD50BD0 /* for specific OSTs */
695 #define LOV_USER_MAGIC_COMP_V1 0x0BD60BD0
696 #define LOV_USER_MAGIC_FOREIGN 0x0BD70BD0
697 #define LOV_USER_MAGIC_SEL 0x0BD80BD0
699 #define LMV_USER_MAGIC 0x0CD30CD0 /* default lmv magic */
700 #define LMV_USER_MAGIC_V0 0x0CD20CD0 /* old default lmv magic*/
701 #define LMV_USER_MAGIC_SPECIFIC 0x0CD40CD0
703 #define LOV_PATTERN_NONE 0x000
704 #define LOV_PATTERN_RAID0 0x001
705 #define LOV_PATTERN_RAID1 0x002
706 #define LOV_PATTERN_MDT 0x100
707 #define LOV_PATTERN_OVERSTRIPING 0x200
709 #define LOV_PATTERN_F_MASK 0xffff0000
710 #define LOV_PATTERN_F_HOLE 0x40000000 /* there is hole in LOV EA */
711 #define LOV_PATTERN_F_RELEASED 0x80000000 /* HSM released file */
712 #define LOV_PATTERN_DEFAULT 0xffffffff
714 #define LOV_OFFSET_DEFAULT ((__u16)-1)
716 static inline bool lov_pattern_supported(__u32 pattern)
718 return (pattern & ~LOV_PATTERN_F_RELEASED) == LOV_PATTERN_RAID0 ||
719 (pattern & ~LOV_PATTERN_F_RELEASED) ==
720 (LOV_PATTERN_RAID0 | LOV_PATTERN_OVERSTRIPING) ||
721 (pattern & ~LOV_PATTERN_F_RELEASED) == LOV_PATTERN_MDT;
724 /* RELEASED and MDT patterns are not valid in many places, so rather than
725 * having many extra checks on lov_pattern_supported, we have this separate
726 * check for non-released, non-DOM components
728 static inline bool lov_pattern_supported_normal_comp(__u32 pattern)
730 return pattern == LOV_PATTERN_RAID0 ||
731 pattern == (LOV_PATTERN_RAID0 | LOV_PATTERN_OVERSTRIPING);
735 #define LOV_MAXPOOLNAME 15
736 #define LOV_POOLNAMEF "%.15s"
738 #define LOV_MIN_STRIPE_BITS 16 /* maximum PAGE_SIZE (ia64), power of 2 */
739 #define LOV_MIN_STRIPE_SIZE (1 << LOV_MIN_STRIPE_BITS)
740 #define LOV_MAX_STRIPE_COUNT_OLD 160
741 /* This calculation is crafted so that input of 4096 will result in 160
742 * which in turn is equal to old maximal stripe count.
743 * XXX: In fact this is too simpified for now, what it also need is to get
744 * ea_type argument to clearly know how much space each stripe consumes.
746 * The limit of 12 pages is somewhat arbitrary, but is a reasonably large
747 * allocation that is sufficient for the current generation of systems.
749 * (max buffer size - lov+rpc header) / sizeof(struct lov_ost_data_v1) */
750 #define LOV_MAX_STRIPE_COUNT 2000 /* ~((12 * 4096 - 256) / 24) */
751 #define LOV_ALL_STRIPES 0xffff /* only valid for directories */
752 #define LOV_V1_INSANE_STRIPE_COUNT 65532 /* maximum stripe count bz13933 */
754 #define XATTR_LUSTRE_PREFIX "lustre."
755 #define XATTR_LUSTRE_LOV XATTR_LUSTRE_PREFIX"lov"
757 #define lov_user_ost_data lov_user_ost_data_v1
758 struct lov_user_ost_data_v1 { /* per-stripe data structure */
759 struct ost_id l_ost_oi; /* OST object ID */
760 __u32 l_ost_gen; /* generation of this OST index */
761 __u32 l_ost_idx; /* OST index in LOV */
762 } __attribute__((packed));
764 #define lov_user_md lov_user_md_v1
765 struct lov_user_md_v1 { /* LOV EA user data (host-endian) */
766 __u32 lmm_magic; /* magic number = LOV_USER_MAGIC_V1 */
767 __u32 lmm_pattern; /* LOV_PATTERN_RAID0, LOV_PATTERN_RAID1 */
768 struct ost_id lmm_oi; /* MDT parent inode id/seq (id/0 for 1.x) */
769 __u32 lmm_stripe_size; /* size of stripe in bytes */
770 __u16 lmm_stripe_count; /* num stripes in use for this object */
772 __u16 lmm_stripe_offset; /* starting stripe offset in
773 * lmm_objects, use when writing */
774 __u16 lmm_layout_gen; /* layout generation number
775 * used when reading */
777 struct lov_user_ost_data_v1 lmm_objects[0]; /* per-stripe data */
778 } __attribute__((packed, __may_alias__));
780 struct lov_user_md_v3 { /* LOV EA user data (host-endian) */
781 __u32 lmm_magic; /* magic number = LOV_USER_MAGIC_V3 */
782 __u32 lmm_pattern; /* LOV_PATTERN_RAID0, LOV_PATTERN_RAID1 */
783 struct ost_id lmm_oi; /* MDT parent inode id/seq (id/0 for 1.x) */
784 __u32 lmm_stripe_size; /* size of stripe in bytes */
785 __u16 lmm_stripe_count; /* num stripes in use for this object */
787 __u16 lmm_stripe_offset; /* starting stripe offset in
788 * lmm_objects, use when writing */
789 __u16 lmm_layout_gen; /* layout generation number
790 * used when reading */
792 char lmm_pool_name[LOV_MAXPOOLNAME + 1]; /* pool name */
793 struct lov_user_ost_data_v1 lmm_objects[0]; /* per-stripe data */
794 } __attribute__((packed));
796 struct lov_foreign_md {
797 __u32 lfm_magic; /* magic number = LOV_MAGIC_FOREIGN */
798 __u32 lfm_length; /* length of lfm_value */
799 __u32 lfm_type; /* type, see LU_FOREIGN_TYPE_ */
800 __u32 lfm_flags; /* flags, type specific */
804 #define foreign_size(lfm) (((struct lov_foreign_md *)lfm)->lfm_length + \
805 offsetof(struct lov_foreign_md, lfm_value))
807 #define foreign_size_le(lfm) \
808 (le32_to_cpu(((struct lov_foreign_md *)lfm)->lfm_length) + \
809 offsetof(struct lov_foreign_md, lfm_value))
812 * The stripe size fields are shared for the extension size storage, however
813 * the extension size is stored in KB, not bytes.
815 #define SEL_UNIT_SIZE 1024llu
822 #define DEXT "[%#llx, %#llx)"
823 #define PEXT(ext) (unsigned long long)(ext)->e_start, (unsigned long long)(ext)->e_end
825 static inline bool lu_extent_is_overlapped(struct lu_extent *e1,
826 struct lu_extent *e2)
828 return e1->e_start < e2->e_end && e2->e_start < e1->e_end;
831 static inline bool lu_extent_is_whole(struct lu_extent *e)
833 return e->e_start == 0 && e->e_end == LUSTRE_EOF;
836 enum lov_comp_md_entry_flags {
837 LCME_FL_STALE = 0x00000001, /* FLR: stale data */
838 LCME_FL_PREF_RD = 0x00000002, /* FLR: preferred for reading */
839 LCME_FL_PREF_WR = 0x00000004, /* FLR: preferred for writing */
840 LCME_FL_PREF_RW = LCME_FL_PREF_RD | LCME_FL_PREF_WR,
841 LCME_FL_OFFLINE = 0x00000008, /* Not used */
842 LCME_FL_INIT = 0x00000010, /* instantiated */
843 LCME_FL_NOSYNC = 0x00000020, /* FLR: no sync for the mirror */
844 LCME_FL_EXTENSION = 0x00000040, /* extension comp, never init */
845 LCME_FL_NEG = 0x80000000 /* used to indicate a negative flag,
846 * won't be stored on disk
850 #define LCME_KNOWN_FLAGS (LCME_FL_NEG | LCME_FL_INIT | LCME_FL_STALE | \
851 LCME_FL_PREF_RW | LCME_FL_NOSYNC | \
854 /* The component flags can be set by users at creation/modification time. */
855 #define LCME_USER_COMP_FLAGS (LCME_FL_PREF_RW | LCME_FL_NOSYNC | \
858 /* The mirror flags can be set by users at creation time. */
859 #define LCME_USER_MIRROR_FLAGS (LCME_FL_PREF_RW)
861 /* The allowed flags obtained from the client at component creation time. */
862 #define LCME_CL_COMP_FLAGS (LCME_USER_MIRROR_FLAGS | LCME_FL_EXTENSION)
864 /* The mirror flags sent by client */
865 #define LCME_MIRROR_FLAGS (LCME_FL_NOSYNC)
867 /* These flags have meaning when set in a default layout and will be inherited
868 * from the default/template layout set on a directory.
870 #define LCME_TEMPLATE_FLAGS (LCME_FL_PREF_RW | LCME_FL_NOSYNC | \
873 /* the highest bit in obdo::o_layout_version is used to mark if the file is
875 #define LU_LAYOUT_RESYNC LCME_FL_NEG
877 /* lcme_id can be specified as certain flags, and the the first
878 * bit of lcme_id is used to indicate that the ID is representing
879 * certain LCME_FL_* but not a real ID. Which implies we can have
880 * at most 31 flags (see LCME_FL_XXX). */
883 LCME_ID_MAX = 0x7FFFFFFF,
884 LCME_ID_ALL = 0xFFFFFFFF,
885 LCME_ID_NOT_ID = LCME_FL_NEG
888 #define LCME_ID_MASK LCME_ID_MAX
890 struct lov_comp_md_entry_v1 {
891 __u32 lcme_id; /* unique id of component */
892 __u32 lcme_flags; /* LCME_FL_XXX */
893 struct lu_extent lcme_extent; /* file extent for component */
894 __u32 lcme_offset; /* offset of component blob,
895 start from lov_comp_md_v1 */
896 __u32 lcme_size; /* size of component blob */
897 __u32 lcme_layout_gen;
898 __u64 lcme_timestamp; /* snapshot time if applicable*/
899 __u32 lcme_padding_1;
900 } __attribute__((packed));
902 #define SEQ_ID_MAX 0x0000FFFF
903 #define SEQ_ID_MASK SEQ_ID_MAX
904 /* bit 30:16 of lcme_id is used to store mirror id */
905 #define MIRROR_ID_MASK 0x7FFF0000
906 #define MIRROR_ID_NEG 0x8000
907 #define MIRROR_ID_SHIFT 16
909 static inline __u32 pflr_id(__u16 mirror_id, __u16 seqid)
911 return ((mirror_id << MIRROR_ID_SHIFT) & MIRROR_ID_MASK) | seqid;
914 static inline __u16 mirror_id_of(__u32 id)
916 return (id & MIRROR_ID_MASK) >> MIRROR_ID_SHIFT;
920 * on-disk data for lcm_flags. Valid if lcm_magic is LOV_MAGIC_COMP_V1.
922 enum lov_comp_md_flags {
923 /* the least 2 bits are used by FLR to record file state */
926 LCM_FL_WRITE_PENDING = 2,
927 LCM_FL_SYNC_PENDING = 3,
928 LCM_FL_FLR_MASK = 0x3,
931 struct lov_comp_md_v1 {
932 __u32 lcm_magic; /* LOV_USER_MAGIC_COMP_V1 */
933 __u32 lcm_size; /* overall size including this struct */
934 __u32 lcm_layout_gen;
936 __u16 lcm_entry_count;
937 /* lcm_mirror_count stores the number of actual mirrors minus 1,
938 * so that non-flr files will have value 0 meaning 1 mirror. */
939 __u16 lcm_mirror_count;
940 __u16 lcm_padding1[3];
942 struct lov_comp_md_entry_v1 lcm_entries[0];
943 } __attribute__((packed));
945 static inline __u32 lov_user_md_size(__u16 stripes, __u32 lmm_magic)
947 if (stripes == (__u16)-1)
950 if (lmm_magic == LOV_USER_MAGIC_V1)
951 return sizeof(struct lov_user_md_v1) +
952 stripes * sizeof(struct lov_user_ost_data_v1);
953 return sizeof(struct lov_user_md_v3) +
954 stripes * sizeof(struct lov_user_ost_data_v1);
957 /* Compile with -D_LARGEFILE64_SOURCE or -D_GNU_SOURCE (or #define) to
958 * use this. It is unsafe to #define those values in this header as it
959 * is possible the application has already #included <sys/stat.h>. */
960 #ifdef HAVE_LOV_USER_MDS_DATA
961 #define lov_user_mds_data lov_user_mds_data_v2
962 struct lov_user_mds_data_v1 {
963 lstat_t lmd_st; /* MDS stat struct */
964 struct lov_user_md_v1 lmd_lmm; /* LOV EA V1 user data */
965 } __attribute__((packed));
967 struct lov_user_mds_data_v2 {
968 struct lu_fid lmd_fid; /* Lustre FID */
969 lstatx_t lmd_stx; /* MDS statx struct */
970 __u64 lmd_flags; /* MDS stat flags */
971 __u32 lmd_lmmsize; /* LOV EA size */
972 __u32 lmd_padding; /* unused */
973 struct lov_user_md_v1 lmd_lmm; /* LOV EA user data */
974 } __attribute__((packed));
977 struct lmv_user_mds_data {
978 struct lu_fid lum_fid;
984 LMV_HASH_TYPE_UNKNOWN = 0, /* 0 is reserved for testing purpose */
985 LMV_HASH_TYPE_ALL_CHARS = 1,
986 LMV_HASH_TYPE_FNV_1A_64 = 2,
990 #define LMV_HASH_TYPE_DEFAULT LMV_HASH_TYPE_FNV_1A_64
992 #define LMV_HASH_NAME_ALL_CHARS "all_char"
993 #define LMV_HASH_NAME_FNV_1A_64 "fnv_1a_64"
995 /* not real hash type, but exposed to user as "space" hash type */
996 #define LMV_HASH_NAME_SPACE "space"
998 /* Right now only the lower part(0-16bits) of lmv_hash_type is being used,
999 * and the higher part will be the flag to indicate the status of object,
1000 * for example the object is being migrated. And the hash function
1001 * might be interpreted differently with different flags. */
1002 #define LMV_HASH_TYPE_MASK 0x0000ffff
1004 /* once this is set on a plain directory default layout, newly created
1005 * subdirectories will be distributed on all MDTs by space usage.
1007 #define LMV_HASH_FLAG_SPACE 0x08000000
1009 /* The striped directory has ever lost its master LMV EA, then LFSCK
1010 * re-generated it. This flag is used to indicate such case. It is an
1012 #define LMV_HASH_FLAG_LOST_LMV 0x10000000
1014 #define LMV_HASH_FLAG_BAD_TYPE 0x20000000
1015 #define LMV_HASH_FLAG_MIGRATION 0x80000000
1017 extern char *mdt_hash_name[LMV_HASH_TYPE_MAX];
1019 struct lustre_foreign_type {
1021 const char *lft_name;
1025 * LOV/LMV foreign types
1027 enum lustre_foreign_types {
1028 LU_FOREIGN_TYPE_NONE = 0,
1029 LU_FOREIGN_TYPE_DAOS = 0xda05,
1030 /* must be the max/last one */
1031 LU_FOREIGN_TYPE_UNKNOWN = 0xffffffff,
1034 extern struct lustre_foreign_type lu_foreign_types[];
1036 /* Got this according to how get LOV_MAX_STRIPE_COUNT, see above,
1037 * (max buffer size - lmv+rpc header) / sizeof(struct lmv_user_mds_data) */
1038 #define LMV_MAX_STRIPE_COUNT 2000 /* ((12 * 4096 - 256) / 24) */
1039 #define lmv_user_md lmv_user_md_v1
1040 struct lmv_user_md_v1 {
1041 __u32 lum_magic; /* must be the first field */
1042 __u32 lum_stripe_count; /* dirstripe count */
1043 __u32 lum_stripe_offset; /* MDT idx for default dirstripe */
1044 __u32 lum_hash_type; /* Dir stripe policy */
1045 __u32 lum_type; /* LMV type: default */
1049 char lum_pool_name[LOV_MAXPOOLNAME + 1];
1050 struct lmv_user_mds_data lum_objects[0];
1051 } __attribute__((packed));
1053 static inline __u32 lmv_foreign_to_md_stripes(__u32 size)
1055 if (size <= sizeof(struct lmv_user_md))
1058 size -= sizeof(struct lmv_user_md);
1059 return (size + sizeof(struct lmv_user_mds_data) - 1) /
1060 sizeof(struct lmv_user_mds_data);
1064 * NB, historically default layout didn't set type, but use XATTR name to differ
1065 * from normal layout, for backward compatibility, define LMV_TYPE_DEFAULT 0x0,
1066 * and still use the same method.
1069 LMV_TYPE_DEFAULT = 0x0000,
1072 static inline int lmv_user_md_size(int stripes, int lmm_magic)
1074 int size = sizeof(struct lmv_user_md);
1076 if (lmm_magic == LMV_USER_MAGIC_SPECIFIC)
1077 size += stripes * sizeof(struct lmv_user_mds_data);
1082 struct ll_recreate_obj {
1088 __u64 id; /* holds object id */
1089 __u32 generation; /* holds object generation */
1090 __u32 f_type; /* holds object type or stripe idx when passing it to
1091 * OST for saving into EA. */
1096 char uuid[UUID_MAX];
1099 static inline bool obd_uuid_equals(const struct obd_uuid *u1,
1100 const struct obd_uuid *u2)
1102 return strcmp((char *)u1->uuid, (char *)u2->uuid) == 0;
1105 static inline int obd_uuid_empty(struct obd_uuid *uuid)
1107 return uuid->uuid[0] == '\0';
1110 static inline void obd_str2uuid(struct obd_uuid *uuid, const char *tmp)
1112 strncpy((char *)uuid->uuid, tmp, sizeof(*uuid));
1113 uuid->uuid[sizeof(*uuid) - 1] = '\0';
1116 /* For printf's only, make sure uuid is terminated */
1117 static inline char *obd_uuid2str(const struct obd_uuid *uuid)
1122 if (uuid->uuid[sizeof(*uuid) - 1] != '\0') {
1123 /* Obviously not safe, but for printfs, no real harm done...
1124 we're always null-terminated, even in a race. */
1125 static char temp[sizeof(*uuid)];
1126 memcpy(temp, uuid->uuid, sizeof(*uuid) - 1);
1127 temp[sizeof(*uuid) - 1] = '\0';
1130 return (char *)(uuid->uuid);
1133 #define LUSTRE_MAXFSNAME 8
1135 /* Extract fsname from uuid (or target name) of a target
1136 e.g. (myfs-OST0007_UUID -> myfs)
1137 see also deuuidify. */
1138 static inline void obd_uuid2fsname(char *buf, char *uuid, int buflen)
1142 strncpy(buf, uuid, buflen - 1);
1143 buf[buflen - 1] = '\0';
1144 p = strrchr(buf, '-');
1149 /* printf display format for Lustre FIDs
1150 * usage: printf("file FID is "DFID"\n", PFID(fid)); */
1151 #define FID_NOBRACE_LEN 40
1152 #define FID_LEN (FID_NOBRACE_LEN + 2)
1153 #define DFID_NOBRACE "%#llx:0x%x:0x%x"
1154 #define DFID "[" DFID_NOBRACE "]"
1155 #define PFID(fid) (unsigned long long)(fid)->f_seq, (fid)->f_oid, (fid)->f_ver
1157 /* scanf input parse format for fids in DFID_NOBRACE format
1158 * Need to strip '[' from DFID format first or use "["SFID"]" at caller.
1159 * usage: sscanf(fidstr, SFID, RFID(&fid)); */
1160 #define SFID "0x%llx:0x%x:0x%x"
1161 #define RFID(fid) (unsigned long long *)&((fid)->f_seq), &((fid)->f_oid), &((fid)->f_ver)
1163 /********* Quotas **********/
1165 #define LUSTRE_QUOTABLOCK_BITS 10
1166 #define LUSTRE_QUOTABLOCK_SIZE (1 << LUSTRE_QUOTABLOCK_BITS)
1168 static inline __u64 lustre_stoqb(size_t space)
1170 return (space + LUSTRE_QUOTABLOCK_SIZE - 1) >> LUSTRE_QUOTABLOCK_BITS;
1173 #define Q_QUOTACHECK 0x800100 /* deprecated as of 2.4 */
1174 #define Q_INITQUOTA 0x800101 /* deprecated as of 2.4 */
1175 #define Q_GETOINFO 0x800102 /* get obd quota info */
1176 #define Q_GETOQUOTA 0x800103 /* get obd quotas */
1177 #define Q_FINVALIDATE 0x800104 /* deprecated as of 2.4 */
1179 /* these must be explicitly translated into linux Q_* in ll_dir_ioctl */
1180 #define LUSTRE_Q_QUOTAON 0x800002 /* deprecated as of 2.4 */
1181 #define LUSTRE_Q_QUOTAOFF 0x800003 /* deprecated as of 2.4 */
1182 #define LUSTRE_Q_GETINFO 0x800005 /* get information about quota files */
1183 #define LUSTRE_Q_SETINFO 0x800006 /* set information about quota files */
1184 #define LUSTRE_Q_GETQUOTA 0x800007 /* get user quota structure */
1185 #define LUSTRE_Q_SETQUOTA 0x800008 /* set user quota structure */
1186 /* lustre-specific control commands */
1187 #define LUSTRE_Q_INVALIDATE 0x80000b /* deprecated as of 2.4 */
1188 #define LUSTRE_Q_FINVALIDATE 0x80000c /* deprecated as of 2.4 */
1189 #define LUSTRE_Q_GETDEFAULT 0x80000d /* get default quota */
1190 #define LUSTRE_Q_SETDEFAULT 0x80000e /* set default quota */
1192 /* In the current Lustre implementation, the grace time is either the time
1193 * or the timestamp to be used after some quota ID exceeds the soft limt,
1194 * 48 bits should be enough, its high 16 bits can be used as quota flags.
1196 #define LQUOTA_GRACE_BITS 48
1197 #define LQUOTA_GRACE_MASK ((1ULL << LQUOTA_GRACE_BITS) - 1)
1198 #define LQUOTA_GRACE_MAX LQUOTA_GRACE_MASK
1199 #define LQUOTA_GRACE(t) (t & LQUOTA_GRACE_MASK)
1200 #define LQUOTA_FLAG(t) (t >> LQUOTA_GRACE_BITS)
1201 #define LQUOTA_GRACE_FLAG(t, f) ((__u64)t | (__u64)f << LQUOTA_GRACE_BITS)
1203 /* different quota flags */
1205 /* the default quota flag, the corresponding quota ID will use the default
1206 * quota setting, the hardlimit and softlimit of its quota record in the global
1207 * quota file will be set to 0, the low 48 bits of the grace will be set to 0
1208 * and high 16 bits will contain this flag (see above comment).
1210 #define LQUOTA_FLAG_DEFAULT 0x0001
1212 #define ALLQUOTA 255 /* set all quota */
1213 static inline const char *qtype_name(int qtype)
1226 #define IDENTITY_DOWNCALL_MAGIC 0x6d6dd629
1227 #define SEPOL_DOWNCALL_MAGIC 0x8b8bb842
1230 #define N_PERMS_MAX 64
1232 struct perm_downcall_data {
1238 struct identity_downcall_data {
1245 struct perm_downcall_data idd_perms[N_PERMS_MAX];
1246 __u32 idd_groups[0];
1249 struct sepol_downcall_data {
1251 time_t sdd_sepol_mtime;
1252 __u16 sdd_sepol_len;
1256 #ifdef NEED_QUOTA_DEFS
1258 #define QIF_BLIMITS 1
1260 #define QIF_ILIMITS 4
1261 #define QIF_INODES 8
1262 #define QIF_BTIME 16
1263 #define QIF_ITIME 32
1264 #define QIF_LIMITS (QIF_BLIMITS | QIF_ILIMITS)
1265 #define QIF_USAGE (QIF_SPACE | QIF_INODES)
1266 #define QIF_TIMES (QIF_BTIME | QIF_ITIME)
1267 #define QIF_ALL (QIF_LIMITS | QIF_USAGE | QIF_TIMES)
1270 #endif /* !__KERNEL__ */
1272 /* lustre volatile file support
1273 * file name header: ".^L^S^T^R:volatile"
1275 #define LUSTRE_VOLATILE_HDR ".\x0c\x13\x14\x12:VOLATILE"
1276 #define LUSTRE_VOLATILE_HDR_LEN 14
1278 enum lustre_quota_version {
1282 /* XXX: same as if_dqinfo struct in kernel */
1290 /* XXX: same as if_dqblk struct in kernel, plus one padding */
1292 __u64 dqb_bhardlimit;
1293 __u64 dqb_bsoftlimit;
1295 __u64 dqb_ihardlimit;
1296 __u64 dqb_isoftlimit;
1297 __u64 dqb_curinodes;
1311 struct if_quotactl {
1318 struct obd_dqinfo qc_dqinfo;
1319 struct obd_dqblk qc_dqblk;
1321 struct obd_uuid obd_uuid;
1324 /* swap layout flags */
1325 #define SWAP_LAYOUTS_CHECK_DV1 (1 << 0)
1326 #define SWAP_LAYOUTS_CHECK_DV2 (1 << 1)
1327 #define SWAP_LAYOUTS_KEEP_MTIME (1 << 2)
1328 #define SWAP_LAYOUTS_KEEP_ATIME (1 << 3)
1329 #define SWAP_LAYOUTS_CLOSE (1 << 4)
1331 /* Swap XATTR_NAME_HSM as well, only on the MDT so far */
1332 #define SWAP_LAYOUTS_MDS_HSM (1 << 31)
1333 struct lustre_swap_layouts {
1341 /** Bit-mask of valid attributes */
1342 /* The LA_* flags are written to disk as part of the ChangeLog records
1343 * so they are part of the on-disk and network protocol, and cannot be changed.
1344 * Only the first 12 bits are currently saved.
1347 LA_ATIME = 1 << 0, /* 0x00001 */
1348 LA_MTIME = 1 << 1, /* 0x00002 */
1349 LA_CTIME = 1 << 2, /* 0x00004 */
1350 LA_SIZE = 1 << 3, /* 0x00008 */
1351 LA_MODE = 1 << 4, /* 0x00010 */
1352 LA_UID = 1 << 5, /* 0x00020 */
1353 LA_GID = 1 << 6, /* 0x00040 */
1354 LA_BLOCKS = 1 << 7, /* 0x00080 */
1355 LA_TYPE = 1 << 8, /* 0x00100 */
1356 LA_FLAGS = 1 << 9, /* 0x00200 */
1357 LA_NLINK = 1 << 10, /* 0x00400 */
1358 LA_RDEV = 1 << 11, /* 0x00800 */
1359 LA_BLKSIZE = 1 << 12, /* 0x01000 */
1360 LA_KILL_SUID = 1 << 13, /* 0x02000 */
1361 LA_KILL_SGID = 1 << 14, /* 0x04000 */
1362 LA_PROJID = 1 << 15, /* 0x08000 */
1363 LA_LAYOUT_VERSION = 1 << 16, /* 0x10000 */
1364 LA_LSIZE = 1 << 17, /* 0x20000 */
1365 LA_LBLOCKS = 1 << 18, /* 0x40000 */
1367 * Attributes must be transmitted to OST objects
1369 LA_REMOTE_ATTR_SET = (LA_UID | LA_GID | LA_PROJID | LA_LAYOUT_VERSION)
1372 #define MDS_FMODE_READ 00000001
1373 #define MDS_FMODE_WRITE 00000002
1375 #define MDS_FMODE_CLOSED 00000000
1376 #define MDS_FMODE_EXEC 00000004
1377 /* MDS_FMODE_EPOCH 01000000 obsolete since 2.8.0 */
1378 /* MDS_FMODE_TRUNC 02000000 obsolete since 2.8.0 */
1379 /* MDS_FMODE_SOM 04000000 obsolete since 2.8.0 */
1381 #define MDS_OPEN_CREATED 00000010
1382 /* MDS_OPEN_CROSS 00000020 obsolete in 2.12, internal use only */
1384 #define MDS_OPEN_CREAT 00000100
1385 #define MDS_OPEN_EXCL 00000200
1386 #define MDS_OPEN_TRUNC 00001000
1387 #define MDS_OPEN_APPEND 00002000
1388 #define MDS_OPEN_SYNC 00010000
1389 #define MDS_OPEN_DIRECTORY 00200000
1391 #define MDS_OPEN_BY_FID 040000000 /* open_by_fid for known object */
1392 #define MDS_OPEN_DELAY_CREATE 0100000000 /* delay initial object create */
1393 #define MDS_OPEN_OWNEROVERRIDE 0200000000 /* NFSD rw-reopen ro file for owner */
1394 #define MDS_OPEN_JOIN_FILE 0400000000 /* open for join file.
1395 * We do not support JOIN FILE
1396 * anymore, reserve this flags
1397 * just for preventing such bit
1400 #define MDS_OPEN_LOCK 04000000000 /* This open requires open lock */
1401 #define MDS_OPEN_HAS_EA 010000000000 /* specify object create pattern */
1402 #define MDS_OPEN_HAS_OBJS 020000000000 /* Just set the EA the obj exist */
1403 #define MDS_OPEN_NORESTORE 0100000000000ULL /* Do not restore file at open */
1404 #define MDS_OPEN_NEWSTRIPE 0200000000000ULL /* New stripe needed (restripe or
1406 #define MDS_OPEN_VOLATILE 0400000000000ULL /* File is volatile = created
1408 #define MDS_OPEN_LEASE 01000000000000ULL /* Open the file and grant lease
1409 * delegation, succeed if it's not
1410 * being opened with conflict mode.
1412 #define MDS_OPEN_RELEASE 02000000000000ULL /* Open the file for HSM release */
1414 #define MDS_OPEN_RESYNC 04000000000000ULL /* FLR: file resync */
1415 #define MDS_OPEN_PCC 010000000000000ULL /* PCC: auto RW-PCC cache attach
1416 * for newly created file */
1418 /* lustre internal open flags, which should not be set from user space */
1419 #define MDS_OPEN_FL_INTERNAL (MDS_OPEN_HAS_EA | MDS_OPEN_HAS_OBJS | \
1420 MDS_OPEN_OWNEROVERRIDE | MDS_OPEN_LOCK | \
1421 MDS_OPEN_BY_FID | MDS_OPEN_LEASE | \
1422 MDS_OPEN_RELEASE | MDS_OPEN_RESYNC | \
1426 /********* Changelogs **********/
1427 /** Changelog record types */
1428 enum changelog_rec_type {
1431 CL_CREATE = 1, /* namespace */
1432 CL_MKDIR = 2, /* namespace */
1433 CL_HARDLINK = 3, /* namespace */
1434 CL_SOFTLINK = 4, /* namespace */
1435 CL_MKNOD = 5, /* namespace */
1436 CL_UNLINK = 6, /* namespace */
1437 CL_RMDIR = 7, /* namespace */
1438 CL_RENAME = 8, /* namespace */
1439 CL_EXT = 9, /* namespace extended record (2nd half of rename) */
1440 CL_OPEN = 10, /* not currently used */
1441 CL_CLOSE = 11, /* may be written to log only with mtime change */
1442 CL_LAYOUT = 12, /* file layout/striping modified */
1446 CL_XATTR = CL_SETXATTR, /* Deprecated name */
1447 CL_HSM = 16, /* HSM specific events, see flags */
1448 CL_MTIME = 17, /* Precedence: setattr > mtime > ctime > atime */
1452 CL_FLRW = 21, /* FLR: file was firstly written */
1453 CL_RESYNC = 22, /* FLR: file was resync-ed */
1455 CL_DN_OPEN = 24, /* denied open */
1459 static inline const char *changelog_type2str(int type) {
1460 static const char *changelog_str[] = {
1461 "MARK", "CREAT", "MKDIR", "HLINK", "SLINK", "MKNOD", "UNLNK",
1462 "RMDIR", "RENME", "RNMTO", "OPEN", "CLOSE", "LYOUT", "TRUNC",
1463 "SATTR", "XATTR", "HSM", "MTIME", "CTIME", "ATIME", "MIGRT",
1464 "FLRW", "RESYNC","GXATR", "NOPEN",
1467 if (type >= 0 && type < CL_LAST)
1468 return changelog_str[type];
1472 /* 12 bits of per-record data can be stored in the bottom of the flags */
1473 #define CLF_FLAGSHIFT 12
1474 enum changelog_rec_flags {
1475 CLF_VERSION = 0x1000,
1476 CLF_RENAME = 0x2000,
1478 CLF_EXTRA_FLAGS = 0x8000,
1479 CLF_SUPPORTED = CLF_VERSION | CLF_RENAME | CLF_JOBID |
1481 CLF_FLAGMASK = (1U << CLF_FLAGSHIFT) - 1,
1482 CLF_VERMASK = ~CLF_FLAGMASK,
1486 /* Anything under the flagmask may be per-type (if desired) */
1487 /* Flags for unlink */
1488 #define CLF_UNLINK_LAST 0x0001 /* Unlink of last hardlink */
1489 #define CLF_UNLINK_HSM_EXISTS 0x0002 /* File has something in HSM */
1490 /* HSM cleaning needed */
1491 /* Flags for rename */
1492 #define CLF_RENAME_LAST 0x0001 /* rename unlink last hardlink
1494 #define CLF_RENAME_LAST_EXISTS 0x0002 /* rename unlink last hardlink of target
1495 * has an archive in backend */
1498 /* 12b used (from high weight to low weight):
1503 #define CLF_HSM_ERR_L 0 /* HSM return code, 7 bits */
1504 #define CLF_HSM_ERR_H 6
1505 #define CLF_HSM_EVENT_L 7 /* HSM event, 3 bits, see enum hsm_event */
1506 #define CLF_HSM_EVENT_H 9
1507 #define CLF_HSM_FLAG_L 10 /* HSM flags, 2 bits, 1 used, 1 spare */
1508 #define CLF_HSM_FLAG_H 11
1509 #define CLF_HSM_SPARE_L 12 /* 4 spare bits */
1510 #define CLF_HSM_SPARE_H 15
1511 #define CLF_HSM_LAST 15
1513 /* Remove bits higher than _h, then extract the value
1514 * between _h and _l by shifting lower weigth to bit 0. */
1515 #define CLF_GET_BITS(_b, _h, _l) (((_b << (CLF_HSM_LAST - _h)) & 0xFFFF) \
1516 >> (CLF_HSM_LAST - _h + _l))
1518 #define CLF_HSM_SUCCESS 0x00
1519 #define CLF_HSM_MAXERROR 0x7E
1520 #define CLF_HSM_ERROVERFLOW 0x7F
1522 #define CLF_HSM_DIRTY 1 /* file is dirty after HSM request end */
1524 /* 3 bits field => 8 values allowed */
1536 static inline enum hsm_event hsm_get_cl_event(__u16 flags)
1538 return (enum hsm_event)CLF_GET_BITS(flags, CLF_HSM_EVENT_H,
1542 static inline void hsm_set_cl_event(enum changelog_rec_flags *clf_flags,
1545 *clf_flags = (enum changelog_rec_flags)
1546 (*clf_flags | (he << CLF_HSM_EVENT_L));
1549 static inline __u16 hsm_get_cl_flags(enum changelog_rec_flags clf_flags)
1551 return CLF_GET_BITS(clf_flags, CLF_HSM_FLAG_H, CLF_HSM_FLAG_L);
1554 static inline void hsm_set_cl_flags(enum changelog_rec_flags *clf_flags,
1557 *clf_flags = (enum changelog_rec_flags)
1558 (*clf_flags | (bits << CLF_HSM_FLAG_L));
1561 static inline int hsm_get_cl_error(enum changelog_rec_flags clf_flags)
1563 return CLF_GET_BITS(clf_flags, CLF_HSM_ERR_H, CLF_HSM_ERR_L);
1566 static inline void hsm_set_cl_error(enum changelog_rec_flags *clf_flags,
1569 *clf_flags = (enum changelog_rec_flags)
1570 (*clf_flags | (error << CLF_HSM_ERR_L));
1573 enum changelog_rec_extra_flags {
1575 CLFE_UIDGID = 0x0001,
1578 CLFE_XATTR = 0x0008,
1579 CLFE_SUPPORTED = CLFE_UIDGID | CLFE_NID | CLFE_OPEN | CLFE_XATTR
1582 enum changelog_send_flag {
1583 /* Not yet implemented */
1584 CHANGELOG_FLAG_FOLLOW = 0x01,
1585 /* Blocking IO makes sense in case of slow user parsing of the records,
1586 * but it also prevents us from cleaning up if the records are not
1588 CHANGELOG_FLAG_BLOCK = 0x02,
1589 /* Pack jobid into the changelog records if available. */
1590 CHANGELOG_FLAG_JOBID = 0x04,
1591 /* Pack additional flag bits into the changelog record */
1592 CHANGELOG_FLAG_EXTRA_FLAGS = 0x08,
1595 enum changelog_send_extra_flag {
1596 /* Pack uid/gid into the changelog record */
1597 CHANGELOG_EXTRA_FLAG_UIDGID = 0x01,
1598 /* Pack nid into the changelog record */
1599 CHANGELOG_EXTRA_FLAG_NID = 0x02,
1600 /* Pack open mode into the changelog record */
1601 CHANGELOG_EXTRA_FLAG_OMODE = 0x04,
1602 /* Pack xattr name into the changelog record */
1603 CHANGELOG_EXTRA_FLAG_XATTR = 0x08,
1606 #define CR_MAXSIZE __ALIGN_KERNEL(2 * NAME_MAX + 2 + \
1607 changelog_rec_offset(CLF_SUPPORTED, \
1610 /* 31 usable bytes string + null terminator. */
1611 #define LUSTRE_JOBID_SIZE 32
1613 /* This is the minimal changelog record. It can contain extensions
1614 * such as rename fields or process jobid. Its exact content is described
1615 * by the cr_flags and cr_extra_flags.
1617 * Extensions are packed in the same order as their corresponding flags,
1618 * then in the same order as their corresponding extra flags.
1620 struct changelog_rec {
1622 __u16 cr_flags; /**< \a changelog_rec_flags */
1623 __u32 cr_type; /**< \a changelog_rec_type */
1624 __u64 cr_index; /**< changelog record number */
1625 __u64 cr_prev; /**< last index for this target fid */
1628 struct lu_fid cr_tfid; /**< target fid */
1629 __u32 cr_markerflags; /**< CL_MARK flags */
1631 struct lu_fid cr_pfid; /**< parent fid */
1634 /* Changelog extension for RENAME. */
1635 struct changelog_ext_rename {
1636 struct lu_fid cr_sfid; /**< source fid, or zero */
1637 struct lu_fid cr_spfid; /**< source parent fid, or zero */
1640 /* Changelog extension to include JOBID. */
1641 struct changelog_ext_jobid {
1642 char cr_jobid[LUSTRE_JOBID_SIZE]; /**< zero-terminated string. */
1645 /* Changelog extension to include additional flags. */
1646 struct changelog_ext_extra_flags {
1647 __u64 cr_extra_flags; /* Additional CLFE_* flags */
1650 /* Changelog extra extension to include UID/GID. */
1651 struct changelog_ext_uidgid {
1656 /* Changelog extra extension to include NID. */
1657 struct changelog_ext_nid {
1658 /* have __u64 instead of lnet_nid_t type for use by client api */
1660 /* for use when IPv6 support is added */
1665 /* Changelog extra extension to include low 32 bits of MDS_OPEN_* flags. */
1666 struct changelog_ext_openmode {
1670 /* Changelog extra extension to include xattr */
1671 struct changelog_ext_xattr {
1672 char cr_xattr[XATTR_NAME_MAX + 1]; /**< zero-terminated string. */
1675 static inline struct changelog_ext_extra_flags *changelog_rec_extra_flags(
1676 const struct changelog_rec *rec);
1678 static inline size_t changelog_rec_offset(enum changelog_rec_flags crf,
1679 enum changelog_rec_extra_flags cref)
1681 size_t size = sizeof(struct changelog_rec);
1683 if (crf & CLF_RENAME)
1684 size += sizeof(struct changelog_ext_rename);
1686 if (crf & CLF_JOBID)
1687 size += sizeof(struct changelog_ext_jobid);
1689 if (crf & CLF_EXTRA_FLAGS) {
1690 size += sizeof(struct changelog_ext_extra_flags);
1691 if (cref & CLFE_UIDGID)
1692 size += sizeof(struct changelog_ext_uidgid);
1693 if (cref & CLFE_NID)
1694 size += sizeof(struct changelog_ext_nid);
1695 if (cref & CLFE_OPEN)
1696 size += sizeof(struct changelog_ext_openmode);
1697 if (cref & CLFE_XATTR)
1698 size += sizeof(struct changelog_ext_xattr);
1704 static inline size_t changelog_rec_size(const struct changelog_rec *rec)
1706 enum changelog_rec_extra_flags cref = CLFE_INVALID;
1708 if (rec->cr_flags & CLF_EXTRA_FLAGS)
1709 cref = (enum changelog_rec_extra_flags)
1710 changelog_rec_extra_flags(rec)->cr_extra_flags;
1712 return changelog_rec_offset(
1713 (enum changelog_rec_flags)rec->cr_flags, cref);
1716 static inline size_t changelog_rec_varsize(const struct changelog_rec *rec)
1718 return changelog_rec_size(rec) - sizeof(*rec) + rec->cr_namelen;
1722 struct changelog_ext_rename *changelog_rec_rename(const struct changelog_rec *rec)
1724 enum changelog_rec_flags crf = (enum changelog_rec_flags)
1725 (rec->cr_flags & CLF_VERSION);
1727 return (struct changelog_ext_rename *)((char *)rec +
1728 changelog_rec_offset(crf,
1732 /* The jobid follows the rename extension, if present */
1734 struct changelog_ext_jobid *changelog_rec_jobid(const struct changelog_rec *rec)
1736 enum changelog_rec_flags crf = (enum changelog_rec_flags)
1737 (rec->cr_flags & (CLF_VERSION | CLF_RENAME));
1739 return (struct changelog_ext_jobid *)((char *)rec +
1740 changelog_rec_offset(crf,
1744 /* The additional flags follow the rename and jobid extensions, if present */
1746 struct changelog_ext_extra_flags *changelog_rec_extra_flags(
1747 const struct changelog_rec *rec)
1749 enum changelog_rec_flags crf = (enum changelog_rec_flags)
1750 (rec->cr_flags & (CLF_VERSION | CLF_RENAME | CLF_JOBID));
1752 return (struct changelog_ext_extra_flags *)((char *)rec +
1753 changelog_rec_offset(crf,
1757 /* The uid/gid is the first extra extension */
1759 struct changelog_ext_uidgid *changelog_rec_uidgid(
1760 const struct changelog_rec *rec)
1762 enum changelog_rec_flags crf = (enum changelog_rec_flags)
1764 (CLF_VERSION | CLF_RENAME | CLF_JOBID | CLF_EXTRA_FLAGS));
1766 return (struct changelog_ext_uidgid *)((char *)rec +
1767 changelog_rec_offset(crf,
1771 /* The nid is the second extra extension */
1773 struct changelog_ext_nid *changelog_rec_nid(const struct changelog_rec *rec)
1775 enum changelog_rec_flags crf = (enum changelog_rec_flags)
1777 (CLF_VERSION | CLF_RENAME | CLF_JOBID | CLF_EXTRA_FLAGS));
1778 enum changelog_rec_extra_flags cref = CLFE_INVALID;
1780 if (rec->cr_flags & CLF_EXTRA_FLAGS)
1781 cref = (enum changelog_rec_extra_flags)
1782 (changelog_rec_extra_flags(rec)->cr_extra_flags &
1785 return (struct changelog_ext_nid *)((char *)rec +
1786 changelog_rec_offset(crf, cref));
1789 /* The OPEN mode is the third extra extension */
1791 struct changelog_ext_openmode *changelog_rec_openmode(
1792 const struct changelog_rec *rec)
1794 enum changelog_rec_flags crf = (enum changelog_rec_flags)
1796 (CLF_VERSION | CLF_RENAME | CLF_JOBID | CLF_EXTRA_FLAGS));
1797 enum changelog_rec_extra_flags cref = CLFE_INVALID;
1799 if (rec->cr_flags & CLF_EXTRA_FLAGS) {
1800 cref = (enum changelog_rec_extra_flags)
1801 (changelog_rec_extra_flags(rec)->cr_extra_flags &
1802 (CLFE_UIDGID | CLFE_NID));
1805 return (struct changelog_ext_openmode *)((char *)rec +
1806 changelog_rec_offset(crf, cref));
1809 /* The xattr name is the fourth extra extension */
1811 struct changelog_ext_xattr *changelog_rec_xattr(
1812 const struct changelog_rec *rec)
1814 enum changelog_rec_flags crf = (enum changelog_rec_flags)
1816 (CLF_VERSION | CLF_RENAME | CLF_JOBID | CLF_EXTRA_FLAGS));
1817 enum changelog_rec_extra_flags cref = CLFE_INVALID;
1819 if (rec->cr_flags & CLF_EXTRA_FLAGS)
1820 cref = (enum changelog_rec_extra_flags)
1821 (changelog_rec_extra_flags(rec)->cr_extra_flags &
1822 (CLFE_UIDGID | CLFE_NID | CLFE_OPEN));
1824 return (struct changelog_ext_xattr *)((char *)rec +
1825 changelog_rec_offset(crf, cref));
1828 /* The name follows the rename, jobid and extra flags extns, if present */
1829 static inline char *changelog_rec_name(const struct changelog_rec *rec)
1831 enum changelog_rec_extra_flags cref = CLFE_INVALID;
1833 if (rec->cr_flags & CLF_EXTRA_FLAGS)
1834 cref = (enum changelog_rec_extra_flags)
1835 changelog_rec_extra_flags(rec)->cr_extra_flags;
1837 return (char *)rec + changelog_rec_offset(
1838 (enum changelog_rec_flags)(rec->cr_flags & CLF_SUPPORTED),
1839 (enum changelog_rec_extra_flags)(cref & CLFE_SUPPORTED));
1842 static inline size_t changelog_rec_snamelen(const struct changelog_rec *rec)
1844 return rec->cr_namelen - strlen(changelog_rec_name(rec)) - 1;
1847 static inline char *changelog_rec_sname(const struct changelog_rec *rec)
1849 char *cr_name = changelog_rec_name(rec);
1851 return cr_name + strlen(cr_name) + 1;
1855 * Remap a record to the desired format as specified by the crf flags.
1856 * The record must be big enough to contain the final remapped version.
1857 * Superfluous extension fields are removed and missing ones are added
1858 * and zeroed. The flags of the record are updated accordingly.
1860 * The jobid and rename extensions can be added to a record, to match the
1861 * format an application expects, typically. In this case, the newly added
1862 * fields will be zeroed.
1863 * The Jobid field can be removed, to guarantee compatibility with older
1864 * clients that don't expect this field in the records they process.
1866 * The following assumptions are being made:
1867 * - CLF_RENAME will not be removed
1868 * - CLF_JOBID will not be added without CLF_RENAME being added too
1869 * - CLF_EXTRA_FLAGS will not be added without CLF_JOBID being added too
1871 * @param[in,out] rec The record to remap.
1872 * @param[in] crf_wanted Flags describing the desired extensions.
1873 * @param[in] cref_want Flags describing the desired extra extensions.
1875 static inline void changelog_remap_rec(struct changelog_rec *rec,
1876 enum changelog_rec_flags crf_wanted,
1877 enum changelog_rec_extra_flags cref_want)
1879 char *xattr_mov = NULL;
1880 char *omd_mov = NULL;
1881 char *nid_mov = NULL;
1882 char *uidgid_mov = NULL;
1886 enum changelog_rec_extra_flags cref = CLFE_INVALID;
1888 crf_wanted = (enum changelog_rec_flags)
1889 (crf_wanted & CLF_SUPPORTED);
1890 cref_want = (enum changelog_rec_extra_flags)
1891 (cref_want & CLFE_SUPPORTED);
1893 if ((rec->cr_flags & CLF_SUPPORTED) == crf_wanted) {
1894 if (!(rec->cr_flags & CLF_EXTRA_FLAGS) ||
1895 (rec->cr_flags & CLF_EXTRA_FLAGS &&
1896 (changelog_rec_extra_flags(rec)->cr_extra_flags &
1902 /* First move the variable-length name field */
1903 memmove((char *)rec + changelog_rec_offset(crf_wanted, cref_want),
1904 changelog_rec_name(rec), rec->cr_namelen);
1906 /* Locations of extensions in the remapped record */
1907 if (rec->cr_flags & CLF_EXTRA_FLAGS) {
1908 xattr_mov = (char *)rec +
1909 changelog_rec_offset(
1910 (enum changelog_rec_flags)
1911 (crf_wanted & CLF_SUPPORTED),
1912 (enum changelog_rec_extra_flags)
1913 (cref_want & ~CLFE_XATTR));
1914 omd_mov = (char *)rec +
1915 changelog_rec_offset(
1916 (enum changelog_rec_flags)
1917 (crf_wanted & CLF_SUPPORTED),
1918 (enum changelog_rec_extra_flags)
1919 (cref_want & ~(CLFE_OPEN | CLFE_XATTR)));
1920 nid_mov = (char *)rec +
1921 changelog_rec_offset(
1922 (enum changelog_rec_flags)
1923 (crf_wanted & CLF_SUPPORTED),
1924 (enum changelog_rec_extra_flags)
1926 ~(CLFE_NID | CLFE_OPEN | CLFE_XATTR)));
1927 uidgid_mov = (char *)rec +
1928 changelog_rec_offset(
1929 (enum changelog_rec_flags)
1930 (crf_wanted & CLF_SUPPORTED),
1931 (enum changelog_rec_extra_flags)
1932 (cref_want & ~(CLFE_UIDGID |
1936 cref = (enum changelog_rec_extra_flags)
1937 changelog_rec_extra_flags(rec)->cr_extra_flags;
1940 ef_mov = (char *)rec +
1941 changelog_rec_offset(
1942 (enum changelog_rec_flags)
1943 (crf_wanted & ~CLF_EXTRA_FLAGS), CLFE_INVALID);
1944 jid_mov = (char *)rec +
1945 changelog_rec_offset((enum changelog_rec_flags)(crf_wanted &
1946 ~(CLF_EXTRA_FLAGS | CLF_JOBID)),
1948 rnm_mov = (char *)rec +
1949 changelog_rec_offset((enum changelog_rec_flags)(crf_wanted &
1955 /* Move the extension fields to the desired positions */
1956 if ((crf_wanted & CLF_EXTRA_FLAGS) &&
1957 (rec->cr_flags & CLF_EXTRA_FLAGS)) {
1958 if ((cref_want & CLFE_XATTR) && (cref & CLFE_XATTR))
1959 memmove(xattr_mov, changelog_rec_xattr(rec),
1960 sizeof(struct changelog_ext_xattr));
1962 if ((cref_want & CLFE_OPEN) && (cref & CLFE_OPEN))
1963 memmove(omd_mov, changelog_rec_openmode(rec),
1964 sizeof(struct changelog_ext_openmode));
1966 if ((cref_want & CLFE_NID) && (cref & CLFE_NID))
1967 memmove(nid_mov, changelog_rec_nid(rec),
1968 sizeof(struct changelog_ext_nid));
1970 if ((cref_want & CLFE_UIDGID) && (cref & CLFE_UIDGID))
1971 memmove(uidgid_mov, changelog_rec_uidgid(rec),
1972 sizeof(struct changelog_ext_uidgid));
1974 memmove(ef_mov, changelog_rec_extra_flags(rec),
1975 sizeof(struct changelog_ext_extra_flags));
1978 if ((crf_wanted & CLF_JOBID) && (rec->cr_flags & CLF_JOBID))
1979 memmove(jid_mov, changelog_rec_jobid(rec),
1980 sizeof(struct changelog_ext_jobid));
1982 if ((crf_wanted & CLF_RENAME) && (rec->cr_flags & CLF_RENAME))
1983 memmove(rnm_mov, changelog_rec_rename(rec),
1984 sizeof(struct changelog_ext_rename));
1986 /* Clear newly added fields */
1987 if (xattr_mov && (cref_want & CLFE_XATTR) &&
1988 !(cref & CLFE_XATTR))
1989 memset(xattr_mov, 0, sizeof(struct changelog_ext_xattr));
1991 if (omd_mov && (cref_want & CLFE_OPEN) &&
1992 !(cref & CLFE_OPEN))
1993 memset(omd_mov, 0, sizeof(struct changelog_ext_openmode));
1995 if (nid_mov && (cref_want & CLFE_NID) &&
1997 memset(nid_mov, 0, sizeof(struct changelog_ext_nid));
1999 if (uidgid_mov && (cref_want & CLFE_UIDGID) &&
2000 !(cref & CLFE_UIDGID))
2001 memset(uidgid_mov, 0, sizeof(struct changelog_ext_uidgid));
2003 if ((crf_wanted & CLF_EXTRA_FLAGS) &&
2004 !(rec->cr_flags & CLF_EXTRA_FLAGS))
2005 memset(ef_mov, 0, sizeof(struct changelog_ext_extra_flags));
2007 if ((crf_wanted & CLF_JOBID) && !(rec->cr_flags & CLF_JOBID))
2008 memset(jid_mov, 0, sizeof(struct changelog_ext_jobid));
2010 if ((crf_wanted & CLF_RENAME) && !(rec->cr_flags & CLF_RENAME))
2011 memset(rnm_mov, 0, sizeof(struct changelog_ext_rename));
2013 /* Update the record's flags accordingly */
2014 rec->cr_flags = (rec->cr_flags & CLF_FLAGMASK) | crf_wanted;
2015 if (rec->cr_flags & CLF_EXTRA_FLAGS)
2016 changelog_rec_extra_flags(rec)->cr_extra_flags =
2017 changelog_rec_extra_flags(rec)->cr_extra_flags |
2021 enum changelog_message_type {
2022 CL_RECORD = 10, /* message is a changelog_rec */
2023 CL_EOF = 11, /* at end of current changelog */
2026 /********* Misc **********/
2028 struct ioc_data_version {
2030 __u32 idv_layout_version; /* FLR: layout version for OST objects */
2031 __u32 idv_flags; /* enum ioc_data_version_flags */
2034 enum ioc_data_version_flags {
2035 LL_DV_RD_FLUSH = (1 << 0), /* Flush dirty pages from clients */
2036 LL_DV_WR_FLUSH = (1 << 1), /* Flush all caching pages from clients */
2040 #define offsetof(typ, memb) ((unsigned long)((char *)&(((typ *)0)->memb)))
2043 #define dot_lustre_name ".lustre"
2046 /********* HSM **********/
2048 /** HSM per-file state
2049 * See HSM_FLAGS below.
2052 HS_NONE = 0x00000000,
2053 HS_EXISTS = 0x00000001,
2054 HS_DIRTY = 0x00000002,
2055 HS_RELEASED = 0x00000004,
2056 HS_ARCHIVED = 0x00000008,
2057 HS_NORELEASE = 0x00000010,
2058 HS_NOARCHIVE = 0x00000020,
2059 HS_LOST = 0x00000040,
2062 /* HSM user-setable flags. */
2063 #define HSM_USER_MASK (HS_NORELEASE | HS_NOARCHIVE | HS_DIRTY)
2065 /* Other HSM flags. */
2066 #define HSM_STATUS_MASK (HS_EXISTS | HS_LOST | HS_RELEASED | HS_ARCHIVED)
2069 * All HSM-related possible flags that could be applied to a file.
2070 * This should be kept in sync with hsm_states.
2072 #define HSM_FLAGS_MASK (HSM_USER_MASK | HSM_STATUS_MASK)
2075 * HSM request progress state
2077 enum hsm_progress_states {
2084 static inline const char *hsm_progress_state2name(enum hsm_progress_states s)
2087 case HPS_WAITING: return "waiting";
2088 case HPS_RUNNING: return "running";
2089 case HPS_DONE: return "done";
2090 default: return "unknown";
2097 } __attribute__((packed));
2100 * Current HSM states of a Lustre file.
2102 * This structure purpose is to be sent to user-space mainly. It describes the
2103 * current HSM flags and in-progress action.
2105 struct hsm_user_state {
2106 /** Current HSM states, from enum hsm_states. */
2108 __u32 hus_archive_id;
2109 /** The current undergoing action, if there is one */
2110 __u32 hus_in_progress_state;
2111 __u32 hus_in_progress_action;
2112 struct hsm_extent hus_in_progress_location;
2113 char hus_extended_info[];
2116 struct hsm_state_set_ioc {
2117 struct lu_fid hssi_fid;
2119 __u64 hssi_clearmask;
2123 * This structure describes the current in-progress action for a file.
2124 * it is retuned to user space and send over the wire
2126 struct hsm_current_action {
2127 /** The current undergoing action, if there is one */
2128 /* state is one of hsm_progress_states */
2130 /* action is one of hsm_user_action */
2132 struct hsm_extent hca_location;
2135 /***** HSM user requests ******/
2136 /* User-generated (lfs/ioctl) request types */
2137 enum hsm_user_action {
2138 HUA_NONE = 1, /* no action (noop) */
2139 HUA_ARCHIVE = 10, /* copy to hsm */
2140 HUA_RESTORE = 11, /* prestage */
2141 HUA_RELEASE = 12, /* drop ost objects */
2142 HUA_REMOVE = 13, /* remove from archive */
2143 HUA_CANCEL = 14 /* cancel a request */
2146 static inline const char *hsm_user_action2name(enum hsm_user_action a)
2149 case HUA_NONE: return "NOOP";
2150 case HUA_ARCHIVE: return "ARCHIVE";
2151 case HUA_RESTORE: return "RESTORE";
2152 case HUA_RELEASE: return "RELEASE";
2153 case HUA_REMOVE: return "REMOVE";
2154 case HUA_CANCEL: return "CANCEL";
2155 default: return "UNKNOWN";
2160 * List of hr_flags (bit field)
2162 #define HSM_FORCE_ACTION 0x0001
2163 /* used by CT, cannot be set by user */
2164 #define HSM_GHOST_COPY 0x0002
2167 * Contains all the fixed part of struct hsm_user_request.
2170 struct hsm_request {
2171 __u32 hr_action; /* enum hsm_user_action */
2172 __u32 hr_archive_id; /* archive id, used only with HUA_ARCHIVE */
2173 __u64 hr_flags; /* request flags */
2174 __u32 hr_itemcount; /* item count in hur_user_item vector */
2178 struct hsm_user_item {
2179 struct lu_fid hui_fid;
2180 struct hsm_extent hui_extent;
2181 } __attribute__((packed));
2183 struct hsm_user_request {
2184 struct hsm_request hur_request;
2185 struct hsm_user_item hur_user_item[0];
2186 /* extra data blob at end of struct (after all
2187 * hur_user_items), only use helpers to access it
2189 } __attribute__((packed));
2191 /** Return pointer to data field in a hsm user request */
2192 static inline void *hur_data(struct hsm_user_request *hur)
2194 return &(hur->hur_user_item[hur->hur_request.hr_itemcount]);
2198 * Compute the current length of the provided hsm_user_request. This returns -1
2199 * instead of an errno because ssize_t is defined to be only [ -1, SSIZE_MAX ]
2201 * return -1 on bounds check error.
2203 static inline ssize_t hur_len(struct hsm_user_request *hur)
2207 /* can't overflow a __u64 since hr_itemcount is only __u32 */
2208 size = offsetof(struct hsm_user_request, hur_user_item[0]) +
2209 (__u64)hur->hur_request.hr_itemcount *
2210 sizeof(hur->hur_user_item[0]) + hur->hur_request.hr_data_len;
2212 if ((ssize_t)size < 0)
2218 /****** HSM RPCs to copytool *****/
2219 /* Message types the copytool may receive */
2220 enum hsm_message_type {
2221 HMT_ACTION_LIST = 100, /* message is a hsm_action_list */
2224 /* Actions the copytool may be instructed to take for a given action_item */
2225 enum hsm_copytool_action {
2226 HSMA_NONE = 10, /* no action */
2227 HSMA_ARCHIVE = 20, /* arbitrary offset */
2233 static inline const char *hsm_copytool_action2name(enum hsm_copytool_action a)
2236 case HSMA_NONE: return "NOOP";
2237 case HSMA_ARCHIVE: return "ARCHIVE";
2238 case HSMA_RESTORE: return "RESTORE";
2239 case HSMA_REMOVE: return "REMOVE";
2240 case HSMA_CANCEL: return "CANCEL";
2241 default: return "UNKNOWN";
2245 /* Copytool item action description */
2246 struct hsm_action_item {
2247 __u32 hai_len; /* valid size of this struct */
2248 __u32 hai_action; /* hsm_copytool_action, but use known size */
2249 struct lu_fid hai_fid; /* Lustre FID to operate on */
2250 struct lu_fid hai_dfid; /* fid used for data access */
2251 struct hsm_extent hai_extent; /* byte range to operate on */
2252 __u64 hai_cookie; /* action cookie from coordinator */
2253 __u64 hai_gid; /* grouplock id */
2254 char hai_data[0]; /* variable length */
2255 } __attribute__((packed));
2258 * helper function which print in hexa the first bytes of
2261 * \param hai [IN] record to print
2262 * \param buffer [IN,OUT] buffer to write the hex string to
2263 * \param len [IN] max buffer length
2267 static inline char *hai_dump_data_field(const struct hsm_action_item *hai,
2268 char *buffer, size_t len)
2275 data_len = hai->hai_len - sizeof(*hai);
2276 for (i = 0; (i < data_len) && (len > 2); i++) {
2277 snprintf(ptr, 3, "%02X", (unsigned char)hai->hai_data[i]);
2287 /* Copytool action list */
2288 #define HAL_VERSION 1
2289 #define HAL_MAXSIZE LNET_MTU /* bytes, used in userspace only */
2290 struct hsm_action_list {
2292 __u32 hal_count; /* number of hai's to follow */
2293 __u64 hal_compound_id; /* returned by coordinator, ignored */
2295 __u32 hal_archive_id; /* which archive backend */
2297 char hal_fsname[0]; /* null-terminated */
2298 /* struct hsm_action_item[hal_count] follows, aligned on 8-byte
2299 boundaries. See hai_zero */
2300 } __attribute__((packed));
2302 /* Return pointer to first hai in action list */
2303 static inline struct hsm_action_item *hai_first(struct hsm_action_list *hal)
2305 size_t offset = __ALIGN_KERNEL(strlen(hal->hal_fsname) + 1, 8);
2307 return (struct hsm_action_item *)(hal->hal_fsname + offset);
2310 /* Return pointer to next hai */
2311 static inline struct hsm_action_item * hai_next(struct hsm_action_item *hai)
2313 size_t offset = __ALIGN_KERNEL(hai->hai_len, 8);
2315 return (struct hsm_action_item *)((char *)hai + offset);
2318 /* Return size of an hsm_action_list */
2319 static inline size_t hal_size(struct hsm_action_list *hal)
2323 struct hsm_action_item *hai;
2325 sz = sizeof(*hal) + __ALIGN_KERNEL(strlen(hal->hal_fsname) + 1, 8);
2326 hai = hai_first(hal);
2327 for (i = 0; i < hal->hal_count ; i++, hai = hai_next(hai))
2328 sz += __ALIGN_KERNEL(hai->hai_len, 8);
2334 * describe the attributes to be set on imported file
2336 struct hsm_user_import {
2345 __u32 hui_archive_id;
2348 /* Copytool progress reporting */
2349 #define HP_FLAG_COMPLETED 0x01
2350 #define HP_FLAG_RETRY 0x02
2352 struct hsm_progress {
2353 struct lu_fid hp_fid;
2355 struct hsm_extent hp_extent;
2357 __u16 hp_errval; /* positive val */
2362 __u64 hc_data_version;
2364 __u16 hc_errval; /* positive val */
2366 struct hsm_action_item hc_hai;
2370 enum llapi_json_types {
2371 LLAPI_JSON_INTEGER = 1,
2377 struct llapi_json_item {
2386 struct llapi_json_item *lji_next;
2389 struct llapi_json_item_list {
2390 int ljil_item_count;
2391 struct llapi_json_item *ljil_items;
2394 enum lu_ladvise_type {
2395 LU_LADVISE_INVALID = 0,
2396 LU_LADVISE_WILLREAD = 1,
2397 LU_LADVISE_DONTNEED = 2,
2398 LU_LADVISE_LOCKNOEXPAND = 3,
2399 LU_LADVISE_LOCKAHEAD = 4,
2403 #define LU_LADVISE_NAMES { \
2404 [LU_LADVISE_WILLREAD] = "willread", \
2405 [LU_LADVISE_DONTNEED] = "dontneed", \
2406 [LU_LADVISE_LOCKNOEXPAND] = "locknoexpand", \
2407 [LU_LADVISE_LOCKAHEAD] = "lockahead", \
2410 /* This is the userspace argument for ladvise. It is currently the same as
2411 * what goes on the wire (struct lu_ladvise), but is defined separately as we
2412 * may need info which is only used locally. */
2413 struct llapi_lu_ladvise {
2414 __u16 lla_advice; /* advice type */
2415 __u16 lla_value1; /* values for different advice types */
2417 __u64 lla_start; /* first byte of extent for advice */
2418 __u64 lla_end; /* last byte of extent for advice */
2424 LF_ASYNC = 0x00000001,
2425 LF_UNSET = 0x00000002,
2428 #define LADVISE_MAGIC 0x1ADF1CE0
2429 /* Masks of valid flags for each advice */
2430 #define LF_LOCKNOEXPAND_MASK LF_UNSET
2431 /* Flags valid for all advices not explicitly specified */
2432 #define LF_DEFAULT_MASK LF_ASYNC
2434 #define LF_MASK (LF_ASYNC | LF_UNSET)
2436 #define lla_lockahead_mode lla_value1
2437 #define lla_peradvice_flags lla_value2
2438 #define lla_lockahead_result lla_value3
2440 /* This is the userspace argument for ladvise, corresponds to ladvise_hdr which
2441 * is used on the wire. It is defined separately as we may need info which is
2442 * only used locally. */
2443 struct llapi_ladvise_hdr {
2444 __u32 lah_magic; /* LADVISE_MAGIC */
2445 __u32 lah_count; /* number of advices */
2446 __u64 lah_flags; /* from enum ladvise_flag */
2447 __u32 lah_value1; /* unused */
2448 __u32 lah_value2; /* unused */
2449 __u64 lah_value3; /* unused */
2450 struct llapi_lu_ladvise lah_advise[0]; /* advices in this header */
2453 #define LAH_COUNT_MAX (1024)
2457 SK_CRYPT_INVALID = -1,
2459 SK_CRYPT_AES256_CTR = 1,
2463 SK_HMAC_INVALID = -1,
2469 struct sk_crypt_type {
2470 const char *sct_name;
2474 struct sk_hmac_type {
2475 const char *sht_name;
2479 enum lock_mode_user {
2485 #define LOCK_MODE_NAMES { \
2486 [MODE_READ_USER] = "READ",\
2487 [MODE_WRITE_USER] = "WRITE"\
2490 enum lockahead_results {
2491 LLA_RESULT_SENT = 0,
2492 LLA_RESULT_DIFFERENT,
2496 enum lu_heat_flag_bit {
2497 LU_HEAT_FLAG_BIT_INVALID = 0,
2498 LU_HEAT_FLAG_BIT_OFF,
2499 LU_HEAT_FLAG_BIT_CLEAR,
2503 LU_HEAT_FLAG_OFF = 1ULL << LU_HEAT_FLAG_BIT_OFF,
2504 LU_HEAT_FLAG_CLEAR = 1ULL << LU_HEAT_FLAG_BIT_CLEAR,
2507 enum obd_heat_type {
2508 OBD_HEAT_READSAMPLE = 0,
2509 OBD_HEAT_WRITESAMPLE = 1,
2510 OBD_HEAT_READBYTE = 2,
2511 OBD_HEAT_WRITEBYTE = 3,
2515 #define LU_HEAT_NAMES { \
2516 [OBD_HEAT_READSAMPLE] = "readsample", \
2517 [OBD_HEAT_WRITESAMPLE] = "writesample", \
2518 [OBD_HEAT_READBYTE] = "readbyte", \
2519 [OBD_HEAT_WRITEBYTE] = "writebyte", \
2534 static inline const char *pcc_type2string(enum lu_pcc_type type)
2539 case LU_PCC_READWRITE:
2546 struct lu_pcc_attach {
2547 __u32 pcca_type; /* PCC type */
2548 __u32 pcca_id; /* archive ID for readwrite, group ID for readonly */
2551 enum lu_pcc_detach_opts {
2552 PCC_DETACH_OPT_NONE = 0, /* Detach only, keep the PCC copy */
2553 PCC_DETACH_OPT_UNCACHE, /* Remove the cached file after detach */
2556 struct lu_pcc_detach_fid {
2557 /* fid of the file to detach */
2558 struct lu_fid pccd_fid;
2562 struct lu_pcc_detach {
2566 enum lu_pcc_state_flags {
2567 PCC_STATE_FL_NONE = 0x0,
2568 /* The inode attr is cached locally */
2569 PCC_STATE_FL_ATTR_VALID = 0x01,
2570 /* The file is being attached into PCC */
2571 PCC_STATE_FL_ATTACHING = 0x02,
2572 /* Allow to auto attach at open */
2573 PCC_STATE_FL_OPEN_ATTACH = 0x04,
2574 /* Allow to auto attach during I/O after layout lock revocation */
2575 PCC_STATE_FL_IO_ATTACH = 0x08,
2576 /* Allow to auto attach at stat */
2577 PCC_STATE_FL_STAT_ATTACH = 0x10,
2578 /* Allow to auto attach at the next open or layout refresh */
2579 PCC_STATE_FL_AUTO_ATTACH = PCC_STATE_FL_OPEN_ATTACH |
2580 PCC_STATE_FL_IO_ATTACH |
2581 PCC_STATE_FL_STAT_ATTACH,
2584 struct lu_pcc_state {
2585 __u32 pccs_type; /* enum lu_pcc_type */
2586 __u32 pccs_open_count;
2587 __u32 pccs_flags; /* enum lu_pcc_state_flags */
2589 char pccs_path[PATH_MAX];
2594 /* make header's size equal lu_fid */
2597 struct lu_fid fa_fids[0];
2599 #define OBD_MAX_FIDS_IN_ARRAY 4096
2601 #if defined(__cplusplus)
2605 /** @} lustreuser */
2607 #endif /* _LUSTRE_USER_H */