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)
715 #define LMV_OFFSET_DEFAULT ((__u32)-1)
717 static inline bool lov_pattern_supported(__u32 pattern)
719 return (pattern & ~LOV_PATTERN_F_RELEASED) == LOV_PATTERN_RAID0 ||
720 (pattern & ~LOV_PATTERN_F_RELEASED) ==
721 (LOV_PATTERN_RAID0 | LOV_PATTERN_OVERSTRIPING) ||
722 (pattern & ~LOV_PATTERN_F_RELEASED) == LOV_PATTERN_MDT;
725 /* RELEASED and MDT patterns are not valid in many places, so rather than
726 * having many extra checks on lov_pattern_supported, we have this separate
727 * check for non-released, non-DOM components
729 static inline bool lov_pattern_supported_normal_comp(__u32 pattern)
731 return pattern == LOV_PATTERN_RAID0 ||
732 pattern == (LOV_PATTERN_RAID0 | LOV_PATTERN_OVERSTRIPING);
736 #define LOV_MAXPOOLNAME 15
737 #define LOV_POOLNAMEF "%.15s"
739 #define LOV_MIN_STRIPE_BITS 16 /* maximum PAGE_SIZE (ia64), power of 2 */
740 #define LOV_MIN_STRIPE_SIZE (1 << LOV_MIN_STRIPE_BITS)
741 #define LOV_MAX_STRIPE_COUNT_OLD 160
742 /* This calculation is crafted so that input of 4096 will result in 160
743 * which in turn is equal to old maximal stripe count.
744 * XXX: In fact this is too simpified for now, what it also need is to get
745 * ea_type argument to clearly know how much space each stripe consumes.
747 * The limit of 12 pages is somewhat arbitrary, but is a reasonably large
748 * allocation that is sufficient for the current generation of systems.
750 * (max buffer size - lov+rpc header) / sizeof(struct lov_ost_data_v1) */
751 #define LOV_MAX_STRIPE_COUNT 2000 /* ~((12 * 4096 - 256) / 24) */
752 #define LOV_ALL_STRIPES 0xffff /* only valid for directories */
753 #define LOV_V1_INSANE_STRIPE_COUNT 65532 /* maximum stripe count bz13933 */
755 #define XATTR_LUSTRE_PREFIX "lustre."
756 #define XATTR_LUSTRE_LOV XATTR_LUSTRE_PREFIX"lov"
758 #define lov_user_ost_data lov_user_ost_data_v1
759 struct lov_user_ost_data_v1 { /* per-stripe data structure */
760 struct ost_id l_ost_oi; /* OST object ID */
761 __u32 l_ost_gen; /* generation of this OST index */
762 __u32 l_ost_idx; /* OST index in LOV */
763 } __attribute__((packed));
765 #define lov_user_md lov_user_md_v1
766 struct lov_user_md_v1 { /* LOV EA user data (host-endian) */
767 __u32 lmm_magic; /* magic number = LOV_USER_MAGIC_V1 */
768 __u32 lmm_pattern; /* LOV_PATTERN_RAID0, LOV_PATTERN_RAID1 */
769 struct ost_id lmm_oi; /* MDT parent inode id/seq (id/0 for 1.x) */
770 __u32 lmm_stripe_size; /* size of stripe in bytes */
771 __u16 lmm_stripe_count; /* num stripes in use for this object */
773 __u16 lmm_stripe_offset; /* starting stripe offset in
774 * lmm_objects, use when writing */
775 __u16 lmm_layout_gen; /* layout generation number
776 * used when reading */
778 struct lov_user_ost_data_v1 lmm_objects[0]; /* per-stripe data */
779 } __attribute__((packed, __may_alias__));
781 struct lov_user_md_v3 { /* LOV EA user data (host-endian) */
782 __u32 lmm_magic; /* magic number = LOV_USER_MAGIC_V3 */
783 __u32 lmm_pattern; /* LOV_PATTERN_RAID0, LOV_PATTERN_RAID1 */
784 struct ost_id lmm_oi; /* MDT parent inode id/seq (id/0 for 1.x) */
785 __u32 lmm_stripe_size; /* size of stripe in bytes */
786 __u16 lmm_stripe_count; /* num stripes in use for this object */
788 __u16 lmm_stripe_offset; /* starting stripe offset in
789 * lmm_objects, use when writing */
790 __u16 lmm_layout_gen; /* layout generation number
791 * used when reading */
793 char lmm_pool_name[LOV_MAXPOOLNAME + 1]; /* pool name */
794 struct lov_user_ost_data_v1 lmm_objects[0]; /* per-stripe data */
795 } __attribute__((packed));
797 struct lov_foreign_md {
798 __u32 lfm_magic; /* magic number = LOV_MAGIC_FOREIGN */
799 __u32 lfm_length; /* length of lfm_value */
800 __u32 lfm_type; /* type, see LU_FOREIGN_TYPE_ */
801 __u32 lfm_flags; /* flags, type specific */
805 #define foreign_size(lfm) (((struct lov_foreign_md *)lfm)->lfm_length + \
806 offsetof(struct lov_foreign_md, lfm_value))
808 #define foreign_size_le(lfm) \
809 (le32_to_cpu(((struct lov_foreign_md *)lfm)->lfm_length) + \
810 offsetof(struct lov_foreign_md, lfm_value))
813 * The stripe size fields are shared for the extension size storage, however
814 * the extension size is stored in KB, not bytes.
816 #define SEL_UNIT_SIZE 1024llu
823 #define DEXT "[%#llx, %#llx)"
824 #define PEXT(ext) (unsigned long long)(ext)->e_start, (unsigned long long)(ext)->e_end
826 static inline bool lu_extent_is_overlapped(struct lu_extent *e1,
827 struct lu_extent *e2)
829 return e1->e_start < e2->e_end && e2->e_start < e1->e_end;
832 static inline bool lu_extent_is_whole(struct lu_extent *e)
834 return e->e_start == 0 && e->e_end == LUSTRE_EOF;
837 enum lov_comp_md_entry_flags {
838 LCME_FL_STALE = 0x00000001, /* FLR: stale data */
839 LCME_FL_PREF_RD = 0x00000002, /* FLR: preferred for reading */
840 LCME_FL_PREF_WR = 0x00000004, /* FLR: preferred for writing */
841 LCME_FL_PREF_RW = LCME_FL_PREF_RD | LCME_FL_PREF_WR,
842 LCME_FL_OFFLINE = 0x00000008, /* Not used */
843 LCME_FL_INIT = 0x00000010, /* instantiated */
844 LCME_FL_NOSYNC = 0x00000020, /* FLR: no sync for the mirror */
845 LCME_FL_EXTENSION = 0x00000040, /* extension comp, never init */
846 LCME_FL_NEG = 0x80000000 /* used to indicate a negative flag,
847 * won't be stored on disk
851 #define LCME_KNOWN_FLAGS (LCME_FL_NEG | LCME_FL_INIT | LCME_FL_STALE | \
852 LCME_FL_PREF_RW | LCME_FL_NOSYNC | \
855 /* The component flags can be set by users at creation/modification time. */
856 #define LCME_USER_COMP_FLAGS (LCME_FL_PREF_RW | LCME_FL_NOSYNC | \
859 /* The mirror flags can be set by users at creation time. */
860 #define LCME_USER_MIRROR_FLAGS (LCME_FL_PREF_RW)
862 /* The allowed flags obtained from the client at component creation time. */
863 #define LCME_CL_COMP_FLAGS (LCME_USER_MIRROR_FLAGS | LCME_FL_EXTENSION)
865 /* The mirror flags sent by client */
866 #define LCME_MIRROR_FLAGS (LCME_FL_NOSYNC)
868 /* These flags have meaning when set in a default layout and will be inherited
869 * from the default/template layout set on a directory.
871 #define LCME_TEMPLATE_FLAGS (LCME_FL_PREF_RW | LCME_FL_NOSYNC | \
874 /* the highest bit in obdo::o_layout_version is used to mark if the file is
876 #define LU_LAYOUT_RESYNC LCME_FL_NEG
878 /* lcme_id can be specified as certain flags, and the the first
879 * bit of lcme_id is used to indicate that the ID is representing
880 * certain LCME_FL_* but not a real ID. Which implies we can have
881 * at most 31 flags (see LCME_FL_XXX). */
884 LCME_ID_MAX = 0x7FFFFFFF,
885 LCME_ID_ALL = 0xFFFFFFFF,
886 LCME_ID_NOT_ID = LCME_FL_NEG
889 #define LCME_ID_MASK LCME_ID_MAX
891 struct lov_comp_md_entry_v1 {
892 __u32 lcme_id; /* unique id of component */
893 __u32 lcme_flags; /* LCME_FL_XXX */
894 struct lu_extent lcme_extent; /* file extent for component */
895 __u32 lcme_offset; /* offset of component blob,
896 start from lov_comp_md_v1 */
897 __u32 lcme_size; /* size of component blob */
898 __u32 lcme_layout_gen;
899 __u64 lcme_timestamp; /* snapshot time if applicable*/
900 __u32 lcme_padding_1;
901 } __attribute__((packed));
903 #define SEQ_ID_MAX 0x0000FFFF
904 #define SEQ_ID_MASK SEQ_ID_MAX
905 /* bit 30:16 of lcme_id is used to store mirror id */
906 #define MIRROR_ID_MASK 0x7FFF0000
907 #define MIRROR_ID_NEG 0x8000
908 #define MIRROR_ID_SHIFT 16
910 static inline __u32 pflr_id(__u16 mirror_id, __u16 seqid)
912 return ((mirror_id << MIRROR_ID_SHIFT) & MIRROR_ID_MASK) | seqid;
915 static inline __u16 mirror_id_of(__u32 id)
917 return (id & MIRROR_ID_MASK) >> MIRROR_ID_SHIFT;
921 * on-disk data for lcm_flags. Valid if lcm_magic is LOV_MAGIC_COMP_V1.
923 enum lov_comp_md_flags {
924 /* the least 2 bits are used by FLR to record file state */
927 LCM_FL_WRITE_PENDING = 2,
928 LCM_FL_SYNC_PENDING = 3,
929 LCM_FL_FLR_MASK = 0x3,
932 struct lov_comp_md_v1 {
933 __u32 lcm_magic; /* LOV_USER_MAGIC_COMP_V1 */
934 __u32 lcm_size; /* overall size including this struct */
935 __u32 lcm_layout_gen;
937 __u16 lcm_entry_count;
938 /* lcm_mirror_count stores the number of actual mirrors minus 1,
939 * so that non-flr files will have value 0 meaning 1 mirror. */
940 __u16 lcm_mirror_count;
941 __u16 lcm_padding1[3];
943 struct lov_comp_md_entry_v1 lcm_entries[0];
944 } __attribute__((packed));
946 static inline __u32 lov_user_md_size(__u16 stripes, __u32 lmm_magic)
948 if (stripes == (__u16)-1)
951 if (lmm_magic == LOV_USER_MAGIC_V1)
952 return sizeof(struct lov_user_md_v1) +
953 stripes * sizeof(struct lov_user_ost_data_v1);
954 return sizeof(struct lov_user_md_v3) +
955 stripes * sizeof(struct lov_user_ost_data_v1);
958 /* Compile with -D_LARGEFILE64_SOURCE or -D_GNU_SOURCE (or #define) to
959 * use this. It is unsafe to #define those values in this header as it
960 * is possible the application has already #included <sys/stat.h>. */
961 #ifdef HAVE_LOV_USER_MDS_DATA
962 #define lov_user_mds_data lov_user_mds_data_v2
963 struct lov_user_mds_data_v1 {
964 lstat_t lmd_st; /* MDS stat struct */
965 struct lov_user_md_v1 lmd_lmm; /* LOV EA V1 user data */
966 } __attribute__((packed));
968 struct lov_user_mds_data_v2 {
969 struct lu_fid lmd_fid; /* Lustre FID */
970 lstatx_t lmd_stx; /* MDS statx struct */
971 __u64 lmd_flags; /* MDS stat flags */
972 __u32 lmd_lmmsize; /* LOV EA size */
973 __u32 lmd_padding; /* unused */
974 struct lov_user_md_v1 lmd_lmm; /* LOV EA user data */
975 } __attribute__((packed));
978 struct lmv_user_mds_data {
979 struct lu_fid lum_fid;
985 LMV_HASH_TYPE_UNKNOWN = 0, /* 0 is reserved for testing purpose */
986 LMV_HASH_TYPE_ALL_CHARS = 1,
987 LMV_HASH_TYPE_FNV_1A_64 = 2,
991 #define LMV_HASH_TYPE_DEFAULT LMV_HASH_TYPE_FNV_1A_64
993 #define LMV_HASH_NAME_ALL_CHARS "all_char"
994 #define LMV_HASH_NAME_FNV_1A_64 "fnv_1a_64"
996 /* not real hash type, but exposed to user as "space" hash type */
997 #define LMV_HASH_NAME_SPACE "space"
999 /* Right now only the lower part(0-16bits) of lmv_hash_type is being used,
1000 * and the higher part will be the flag to indicate the status of object,
1001 * for example the object is being migrated. And the hash function
1002 * might be interpreted differently with different flags. */
1003 #define LMV_HASH_TYPE_MASK 0x0000ffff
1005 static inline bool lmv_is_known_hash_type(__u32 type)
1007 return (type & LMV_HASH_TYPE_MASK) == LMV_HASH_TYPE_FNV_1A_64 ||
1008 (type & LMV_HASH_TYPE_MASK) == LMV_HASH_TYPE_ALL_CHARS;
1011 /* The striped directory has ever lost its master LMV EA, then LFSCK
1012 * re-generated it. This flag is used to indicate such case. It is an
1014 #define LMV_HASH_FLAG_LOST_LMV 0x10000000
1016 #define LMV_HASH_FLAG_BAD_TYPE 0x20000000
1017 #define LMV_HASH_FLAG_MIGRATION 0x80000000
1019 extern char *mdt_hash_name[LMV_HASH_TYPE_MAX];
1021 struct lustre_foreign_type {
1023 const char *lft_name;
1027 * LOV/LMV foreign types
1029 enum lustre_foreign_types {
1030 LU_FOREIGN_TYPE_NONE = 0,
1031 LU_FOREIGN_TYPE_DAOS = 0xda05,
1032 /* must be the max/last one */
1033 LU_FOREIGN_TYPE_UNKNOWN = 0xffffffff,
1036 extern struct lustre_foreign_type lu_foreign_types[];
1038 /* Got this according to how get LOV_MAX_STRIPE_COUNT, see above,
1039 * (max buffer size - lmv+rpc header) / sizeof(struct lmv_user_mds_data) */
1040 #define LMV_MAX_STRIPE_COUNT 2000 /* ((12 * 4096 - 256) / 24) */
1041 #define lmv_user_md lmv_user_md_v1
1042 struct lmv_user_md_v1 {
1043 __u32 lum_magic; /* must be the first field */
1044 __u32 lum_stripe_count; /* dirstripe count */
1045 __u32 lum_stripe_offset; /* MDT idx for default dirstripe */
1046 __u32 lum_hash_type; /* Dir stripe policy */
1047 __u32 lum_type; /* LMV type: default */
1051 char lum_pool_name[LOV_MAXPOOLNAME + 1];
1052 struct lmv_user_mds_data lum_objects[0];
1053 } __attribute__((packed));
1055 static inline __u32 lmv_foreign_to_md_stripes(__u32 size)
1057 if (size <= sizeof(struct lmv_user_md))
1060 size -= sizeof(struct lmv_user_md);
1061 return (size + sizeof(struct lmv_user_mds_data) - 1) /
1062 sizeof(struct lmv_user_mds_data);
1066 * NB, historically default layout didn't set type, but use XATTR name to differ
1067 * from normal layout, for backward compatibility, define LMV_TYPE_DEFAULT 0x0,
1068 * and still use the same method.
1071 LMV_TYPE_DEFAULT = 0x0000,
1074 static inline int lmv_user_md_size(int stripes, int lmm_magic)
1076 int size = sizeof(struct lmv_user_md);
1078 if (lmm_magic == LMV_USER_MAGIC_SPECIFIC)
1079 size += stripes * sizeof(struct lmv_user_mds_data);
1084 struct ll_recreate_obj {
1090 __u64 id; /* holds object id */
1091 __u32 generation; /* holds object generation */
1092 __u32 f_type; /* holds object type or stripe idx when passing it to
1093 * OST for saving into EA. */
1098 char uuid[UUID_MAX];
1101 static inline bool obd_uuid_equals(const struct obd_uuid *u1,
1102 const struct obd_uuid *u2)
1104 return strcmp((char *)u1->uuid, (char *)u2->uuid) == 0;
1107 static inline int obd_uuid_empty(struct obd_uuid *uuid)
1109 return uuid->uuid[0] == '\0';
1112 static inline void obd_str2uuid(struct obd_uuid *uuid, const char *tmp)
1114 strncpy((char *)uuid->uuid, tmp, sizeof(*uuid));
1115 uuid->uuid[sizeof(*uuid) - 1] = '\0';
1118 /* For printf's only, make sure uuid is terminated */
1119 static inline char *obd_uuid2str(const struct obd_uuid *uuid)
1124 if (uuid->uuid[sizeof(*uuid) - 1] != '\0') {
1125 /* Obviously not safe, but for printfs, no real harm done...
1126 we're always null-terminated, even in a race. */
1127 static char temp[sizeof(*uuid)];
1128 memcpy(temp, uuid->uuid, sizeof(*uuid) - 1);
1129 temp[sizeof(*uuid) - 1] = '\0';
1132 return (char *)(uuid->uuid);
1135 #define LUSTRE_MAXFSNAME 8
1137 /* Extract fsname from uuid (or target name) of a target
1138 e.g. (myfs-OST0007_UUID -> myfs)
1139 see also deuuidify. */
1140 static inline void obd_uuid2fsname(char *buf, char *uuid, int buflen)
1144 strncpy(buf, uuid, buflen - 1);
1145 buf[buflen - 1] = '\0';
1146 p = strrchr(buf, '-');
1151 /* printf display format for Lustre FIDs
1152 * usage: printf("file FID is "DFID"\n", PFID(fid)); */
1153 #define FID_NOBRACE_LEN 40
1154 #define FID_LEN (FID_NOBRACE_LEN + 2)
1155 #define DFID_NOBRACE "%#llx:0x%x:0x%x"
1156 #define DFID "[" DFID_NOBRACE "]"
1157 #define PFID(fid) (unsigned long long)(fid)->f_seq, (fid)->f_oid, (fid)->f_ver
1159 /* scanf input parse format for fids in DFID_NOBRACE format
1160 * Need to strip '[' from DFID format first or use "["SFID"]" at caller.
1161 * usage: sscanf(fidstr, SFID, RFID(&fid)); */
1162 #define SFID "0x%llx:0x%x:0x%x"
1163 #define RFID(fid) (unsigned long long *)&((fid)->f_seq), &((fid)->f_oid), &((fid)->f_ver)
1165 /********* Quotas **********/
1167 #define LUSTRE_QUOTABLOCK_BITS 10
1168 #define LUSTRE_QUOTABLOCK_SIZE (1 << LUSTRE_QUOTABLOCK_BITS)
1170 static inline __u64 lustre_stoqb(size_t space)
1172 return (space + LUSTRE_QUOTABLOCK_SIZE - 1) >> LUSTRE_QUOTABLOCK_BITS;
1175 #define Q_QUOTACHECK 0x800100 /* deprecated as of 2.4 */
1176 #define Q_INITQUOTA 0x800101 /* deprecated as of 2.4 */
1177 #define Q_GETOINFO 0x800102 /* get obd quota info */
1178 #define Q_GETOQUOTA 0x800103 /* get obd quotas */
1179 #define Q_FINVALIDATE 0x800104 /* deprecated as of 2.4 */
1181 /* these must be explicitly translated into linux Q_* in ll_dir_ioctl */
1182 #define LUSTRE_Q_QUOTAON 0x800002 /* deprecated as of 2.4 */
1183 #define LUSTRE_Q_QUOTAOFF 0x800003 /* deprecated as of 2.4 */
1184 #define LUSTRE_Q_GETINFO 0x800005 /* get information about quota files */
1185 #define LUSTRE_Q_SETINFO 0x800006 /* set information about quota files */
1186 #define LUSTRE_Q_GETQUOTA 0x800007 /* get user quota structure */
1187 #define LUSTRE_Q_SETQUOTA 0x800008 /* set user quota structure */
1188 /* lustre-specific control commands */
1189 #define LUSTRE_Q_INVALIDATE 0x80000b /* deprecated as of 2.4 */
1190 #define LUSTRE_Q_FINVALIDATE 0x80000c /* deprecated as of 2.4 */
1191 #define LUSTRE_Q_GETDEFAULT 0x80000d /* get default quota */
1192 #define LUSTRE_Q_SETDEFAULT 0x80000e /* set default quota */
1194 /* In the current Lustre implementation, the grace time is either the time
1195 * or the timestamp to be used after some quota ID exceeds the soft limt,
1196 * 48 bits should be enough, its high 16 bits can be used as quota flags.
1198 #define LQUOTA_GRACE_BITS 48
1199 #define LQUOTA_GRACE_MASK ((1ULL << LQUOTA_GRACE_BITS) - 1)
1200 #define LQUOTA_GRACE_MAX LQUOTA_GRACE_MASK
1201 #define LQUOTA_GRACE(t) (t & LQUOTA_GRACE_MASK)
1202 #define LQUOTA_FLAG(t) (t >> LQUOTA_GRACE_BITS)
1203 #define LQUOTA_GRACE_FLAG(t, f) ((__u64)t | (__u64)f << LQUOTA_GRACE_BITS)
1205 /* different quota flags */
1207 /* the default quota flag, the corresponding quota ID will use the default
1208 * quota setting, the hardlimit and softlimit of its quota record in the global
1209 * quota file will be set to 0, the low 48 bits of the grace will be set to 0
1210 * and high 16 bits will contain this flag (see above comment).
1212 #define LQUOTA_FLAG_DEFAULT 0x0001
1214 #define ALLQUOTA 255 /* set all quota */
1215 static inline const char *qtype_name(int qtype)
1228 #define IDENTITY_DOWNCALL_MAGIC 0x6d6dd629
1229 #define SEPOL_DOWNCALL_MAGIC 0x8b8bb842
1232 #define N_PERMS_MAX 64
1234 struct perm_downcall_data {
1240 struct identity_downcall_data {
1247 struct perm_downcall_data idd_perms[N_PERMS_MAX];
1248 __u32 idd_groups[0];
1251 struct sepol_downcall_data {
1253 time_t sdd_sepol_mtime;
1254 __u16 sdd_sepol_len;
1258 #ifdef NEED_QUOTA_DEFS
1260 #define QIF_BLIMITS 1
1262 #define QIF_ILIMITS 4
1263 #define QIF_INODES 8
1264 #define QIF_BTIME 16
1265 #define QIF_ITIME 32
1266 #define QIF_LIMITS (QIF_BLIMITS | QIF_ILIMITS)
1267 #define QIF_USAGE (QIF_SPACE | QIF_INODES)
1268 #define QIF_TIMES (QIF_BTIME | QIF_ITIME)
1269 #define QIF_ALL (QIF_LIMITS | QIF_USAGE | QIF_TIMES)
1272 #endif /* !__KERNEL__ */
1274 /* lustre volatile file support
1275 * file name header: ".^L^S^T^R:volatile"
1277 #define LUSTRE_VOLATILE_HDR ".\x0c\x13\x14\x12:VOLATILE"
1278 #define LUSTRE_VOLATILE_HDR_LEN 14
1280 enum lustre_quota_version {
1284 /* XXX: same as if_dqinfo struct in kernel */
1292 /* XXX: same as if_dqblk struct in kernel, plus one padding */
1294 __u64 dqb_bhardlimit;
1295 __u64 dqb_bsoftlimit;
1297 __u64 dqb_ihardlimit;
1298 __u64 dqb_isoftlimit;
1299 __u64 dqb_curinodes;
1313 struct if_quotactl {
1320 struct obd_dqinfo qc_dqinfo;
1321 struct obd_dqblk qc_dqblk;
1323 struct obd_uuid obd_uuid;
1326 /* swap layout flags */
1327 #define SWAP_LAYOUTS_CHECK_DV1 (1 << 0)
1328 #define SWAP_LAYOUTS_CHECK_DV2 (1 << 1)
1329 #define SWAP_LAYOUTS_KEEP_MTIME (1 << 2)
1330 #define SWAP_LAYOUTS_KEEP_ATIME (1 << 3)
1331 #define SWAP_LAYOUTS_CLOSE (1 << 4)
1333 /* Swap XATTR_NAME_HSM as well, only on the MDT so far */
1334 #define SWAP_LAYOUTS_MDS_HSM (1 << 31)
1335 struct lustre_swap_layouts {
1343 /** Bit-mask of valid attributes */
1344 /* The LA_* flags are written to disk as part of the ChangeLog records
1345 * so they are part of the on-disk and network protocol, and cannot be changed.
1346 * Only the first 12 bits are currently saved.
1349 LA_ATIME = 1 << 0, /* 0x00001 */
1350 LA_MTIME = 1 << 1, /* 0x00002 */
1351 LA_CTIME = 1 << 2, /* 0x00004 */
1352 LA_SIZE = 1 << 3, /* 0x00008 */
1353 LA_MODE = 1 << 4, /* 0x00010 */
1354 LA_UID = 1 << 5, /* 0x00020 */
1355 LA_GID = 1 << 6, /* 0x00040 */
1356 LA_BLOCKS = 1 << 7, /* 0x00080 */
1357 LA_TYPE = 1 << 8, /* 0x00100 */
1358 LA_FLAGS = 1 << 9, /* 0x00200 */
1359 LA_NLINK = 1 << 10, /* 0x00400 */
1360 LA_RDEV = 1 << 11, /* 0x00800 */
1361 LA_BLKSIZE = 1 << 12, /* 0x01000 */
1362 LA_KILL_SUID = 1 << 13, /* 0x02000 */
1363 LA_KILL_SGID = 1 << 14, /* 0x04000 */
1364 LA_PROJID = 1 << 15, /* 0x08000 */
1365 LA_LAYOUT_VERSION = 1 << 16, /* 0x10000 */
1366 LA_LSIZE = 1 << 17, /* 0x20000 */
1367 LA_LBLOCKS = 1 << 18, /* 0x40000 */
1369 * Attributes must be transmitted to OST objects
1371 LA_REMOTE_ATTR_SET = (LA_UID | LA_GID | LA_PROJID | LA_LAYOUT_VERSION)
1374 #define MDS_FMODE_READ 00000001
1375 #define MDS_FMODE_WRITE 00000002
1377 #define MDS_FMODE_CLOSED 00000000
1378 #define MDS_FMODE_EXEC 00000004
1379 /* MDS_FMODE_EPOCH 01000000 obsolete since 2.8.0 */
1380 /* MDS_FMODE_TRUNC 02000000 obsolete since 2.8.0 */
1381 /* MDS_FMODE_SOM 04000000 obsolete since 2.8.0 */
1383 #define MDS_OPEN_CREATED 00000010
1384 /* MDS_OPEN_CROSS 00000020 obsolete in 2.12, internal use only */
1386 #define MDS_OPEN_CREAT 00000100
1387 #define MDS_OPEN_EXCL 00000200
1388 #define MDS_OPEN_TRUNC 00001000
1389 #define MDS_OPEN_APPEND 00002000
1390 #define MDS_OPEN_SYNC 00010000
1391 #define MDS_OPEN_DIRECTORY 00200000
1393 #define MDS_OPEN_BY_FID 040000000 /* open_by_fid for known object */
1394 #define MDS_OPEN_DELAY_CREATE 0100000000 /* delay initial object create */
1395 #define MDS_OPEN_OWNEROVERRIDE 0200000000 /* NFSD rw-reopen ro file for owner */
1396 #define MDS_OPEN_JOIN_FILE 0400000000 /* open for join file.
1397 * We do not support JOIN FILE
1398 * anymore, reserve this flags
1399 * just for preventing such bit
1402 #define MDS_OPEN_LOCK 04000000000 /* This open requires open lock */
1403 #define MDS_OPEN_HAS_EA 010000000000 /* specify object create pattern */
1404 #define MDS_OPEN_HAS_OBJS 020000000000 /* Just set the EA the obj exist */
1405 #define MDS_OPEN_NORESTORE 0100000000000ULL /* Do not restore file at open */
1406 #define MDS_OPEN_NEWSTRIPE 0200000000000ULL /* New stripe needed (restripe or
1408 #define MDS_OPEN_VOLATILE 0400000000000ULL /* File is volatile = created
1410 #define MDS_OPEN_LEASE 01000000000000ULL /* Open the file and grant lease
1411 * delegation, succeed if it's not
1412 * being opened with conflict mode.
1414 #define MDS_OPEN_RELEASE 02000000000000ULL /* Open the file for HSM release */
1416 #define MDS_OPEN_RESYNC 04000000000000ULL /* FLR: file resync */
1417 #define MDS_OPEN_PCC 010000000000000ULL /* PCC: auto RW-PCC cache attach
1418 * for newly created file */
1420 /* lustre internal open flags, which should not be set from user space */
1421 #define MDS_OPEN_FL_INTERNAL (MDS_OPEN_HAS_EA | MDS_OPEN_HAS_OBJS | \
1422 MDS_OPEN_OWNEROVERRIDE | MDS_OPEN_LOCK | \
1423 MDS_OPEN_BY_FID | MDS_OPEN_LEASE | \
1424 MDS_OPEN_RELEASE | MDS_OPEN_RESYNC | \
1428 /********* Changelogs **********/
1429 /** Changelog record types */
1430 enum changelog_rec_type {
1433 CL_CREATE = 1, /* namespace */
1434 CL_MKDIR = 2, /* namespace */
1435 CL_HARDLINK = 3, /* namespace */
1436 CL_SOFTLINK = 4, /* namespace */
1437 CL_MKNOD = 5, /* namespace */
1438 CL_UNLINK = 6, /* namespace */
1439 CL_RMDIR = 7, /* namespace */
1440 CL_RENAME = 8, /* namespace */
1441 CL_EXT = 9, /* namespace extended record (2nd half of rename) */
1442 CL_OPEN = 10, /* not currently used */
1443 CL_CLOSE = 11, /* may be written to log only with mtime change */
1444 CL_LAYOUT = 12, /* file layout/striping modified */
1448 CL_XATTR = CL_SETXATTR, /* Deprecated name */
1449 CL_HSM = 16, /* HSM specific events, see flags */
1450 CL_MTIME = 17, /* Precedence: setattr > mtime > ctime > atime */
1454 CL_FLRW = 21, /* FLR: file was firstly written */
1455 CL_RESYNC = 22, /* FLR: file was resync-ed */
1457 CL_DN_OPEN = 24, /* denied open */
1461 static inline const char *changelog_type2str(int type) {
1462 static const char *changelog_str[] = {
1463 "MARK", "CREAT", "MKDIR", "HLINK", "SLINK", "MKNOD", "UNLNK",
1464 "RMDIR", "RENME", "RNMTO", "OPEN", "CLOSE", "LYOUT", "TRUNC",
1465 "SATTR", "XATTR", "HSM", "MTIME", "CTIME", "ATIME", "MIGRT",
1466 "FLRW", "RESYNC","GXATR", "NOPEN",
1469 if (type >= 0 && type < CL_LAST)
1470 return changelog_str[type];
1474 /* 12 bits of per-record data can be stored in the bottom of the flags */
1475 #define CLF_FLAGSHIFT 12
1476 enum changelog_rec_flags {
1477 CLF_VERSION = 0x1000,
1478 CLF_RENAME = 0x2000,
1480 CLF_EXTRA_FLAGS = 0x8000,
1481 CLF_SUPPORTED = CLF_VERSION | CLF_RENAME | CLF_JOBID |
1483 CLF_FLAGMASK = (1U << CLF_FLAGSHIFT) - 1,
1484 CLF_VERMASK = ~CLF_FLAGMASK,
1488 /* Anything under the flagmask may be per-type (if desired) */
1489 /* Flags for unlink */
1490 #define CLF_UNLINK_LAST 0x0001 /* Unlink of last hardlink */
1491 #define CLF_UNLINK_HSM_EXISTS 0x0002 /* File has something in HSM */
1492 /* HSM cleaning needed */
1493 /* Flags for rename */
1494 #define CLF_RENAME_LAST 0x0001 /* rename unlink last hardlink
1496 #define CLF_RENAME_LAST_EXISTS 0x0002 /* rename unlink last hardlink of target
1497 * has an archive in backend */
1500 /* 12b used (from high weight to low weight):
1505 #define CLF_HSM_ERR_L 0 /* HSM return code, 7 bits */
1506 #define CLF_HSM_ERR_H 6
1507 #define CLF_HSM_EVENT_L 7 /* HSM event, 3 bits, see enum hsm_event */
1508 #define CLF_HSM_EVENT_H 9
1509 #define CLF_HSM_FLAG_L 10 /* HSM flags, 2 bits, 1 used, 1 spare */
1510 #define CLF_HSM_FLAG_H 11
1511 #define CLF_HSM_SPARE_L 12 /* 4 spare bits */
1512 #define CLF_HSM_SPARE_H 15
1513 #define CLF_HSM_LAST 15
1515 /* Remove bits higher than _h, then extract the value
1516 * between _h and _l by shifting lower weigth to bit 0. */
1517 #define CLF_GET_BITS(_b, _h, _l) (((_b << (CLF_HSM_LAST - _h)) & 0xFFFF) \
1518 >> (CLF_HSM_LAST - _h + _l))
1520 #define CLF_HSM_SUCCESS 0x00
1521 #define CLF_HSM_MAXERROR 0x7E
1522 #define CLF_HSM_ERROVERFLOW 0x7F
1524 #define CLF_HSM_DIRTY 1 /* file is dirty after HSM request end */
1526 /* 3 bits field => 8 values allowed */
1538 static inline enum hsm_event hsm_get_cl_event(__u16 flags)
1540 return (enum hsm_event)CLF_GET_BITS(flags, CLF_HSM_EVENT_H,
1544 static inline void hsm_set_cl_event(enum changelog_rec_flags *clf_flags,
1547 *clf_flags = (enum changelog_rec_flags)
1548 (*clf_flags | (he << CLF_HSM_EVENT_L));
1551 static inline __u16 hsm_get_cl_flags(enum changelog_rec_flags clf_flags)
1553 return CLF_GET_BITS(clf_flags, CLF_HSM_FLAG_H, CLF_HSM_FLAG_L);
1556 static inline void hsm_set_cl_flags(enum changelog_rec_flags *clf_flags,
1559 *clf_flags = (enum changelog_rec_flags)
1560 (*clf_flags | (bits << CLF_HSM_FLAG_L));
1563 static inline int hsm_get_cl_error(enum changelog_rec_flags clf_flags)
1565 return CLF_GET_BITS(clf_flags, CLF_HSM_ERR_H, CLF_HSM_ERR_L);
1568 static inline void hsm_set_cl_error(enum changelog_rec_flags *clf_flags,
1571 *clf_flags = (enum changelog_rec_flags)
1572 (*clf_flags | (error << CLF_HSM_ERR_L));
1575 enum changelog_rec_extra_flags {
1577 CLFE_UIDGID = 0x0001,
1580 CLFE_XATTR = 0x0008,
1581 CLFE_SUPPORTED = CLFE_UIDGID | CLFE_NID | CLFE_OPEN | CLFE_XATTR
1584 enum changelog_send_flag {
1585 /* Not yet implemented */
1586 CHANGELOG_FLAG_FOLLOW = 0x01,
1587 /* Blocking IO makes sense in case of slow user parsing of the records,
1588 * but it also prevents us from cleaning up if the records are not
1590 CHANGELOG_FLAG_BLOCK = 0x02,
1591 /* Pack jobid into the changelog records if available. */
1592 CHANGELOG_FLAG_JOBID = 0x04,
1593 /* Pack additional flag bits into the changelog record */
1594 CHANGELOG_FLAG_EXTRA_FLAGS = 0x08,
1597 enum changelog_send_extra_flag {
1598 /* Pack uid/gid into the changelog record */
1599 CHANGELOG_EXTRA_FLAG_UIDGID = 0x01,
1600 /* Pack nid into the changelog record */
1601 CHANGELOG_EXTRA_FLAG_NID = 0x02,
1602 /* Pack open mode into the changelog record */
1603 CHANGELOG_EXTRA_FLAG_OMODE = 0x04,
1604 /* Pack xattr name into the changelog record */
1605 CHANGELOG_EXTRA_FLAG_XATTR = 0x08,
1608 #define CR_MAXSIZE __ALIGN_KERNEL(2 * NAME_MAX + 2 + \
1609 changelog_rec_offset(CLF_SUPPORTED, \
1612 /* 31 usable bytes string + null terminator. */
1613 #define LUSTRE_JOBID_SIZE 32
1615 /* This is the minimal changelog record. It can contain extensions
1616 * such as rename fields or process jobid. Its exact content is described
1617 * by the cr_flags and cr_extra_flags.
1619 * Extensions are packed in the same order as their corresponding flags,
1620 * then in the same order as their corresponding extra flags.
1622 struct changelog_rec {
1624 __u16 cr_flags; /**< \a changelog_rec_flags */
1625 __u32 cr_type; /**< \a changelog_rec_type */
1626 __u64 cr_index; /**< changelog record number */
1627 __u64 cr_prev; /**< last index for this target fid */
1630 struct lu_fid cr_tfid; /**< target fid */
1631 __u32 cr_markerflags; /**< CL_MARK flags */
1633 struct lu_fid cr_pfid; /**< parent fid */
1636 /* Changelog extension for RENAME. */
1637 struct changelog_ext_rename {
1638 struct lu_fid cr_sfid; /**< source fid, or zero */
1639 struct lu_fid cr_spfid; /**< source parent fid, or zero */
1642 /* Changelog extension to include JOBID. */
1643 struct changelog_ext_jobid {
1644 char cr_jobid[LUSTRE_JOBID_SIZE]; /**< zero-terminated string. */
1647 /* Changelog extension to include additional flags. */
1648 struct changelog_ext_extra_flags {
1649 __u64 cr_extra_flags; /* Additional CLFE_* flags */
1652 /* Changelog extra extension to include UID/GID. */
1653 struct changelog_ext_uidgid {
1658 /* Changelog extra extension to include NID. */
1659 struct changelog_ext_nid {
1660 /* have __u64 instead of lnet_nid_t type for use by client api */
1662 /* for use when IPv6 support is added */
1667 /* Changelog extra extension to include low 32 bits of MDS_OPEN_* flags. */
1668 struct changelog_ext_openmode {
1672 /* Changelog extra extension to include xattr */
1673 struct changelog_ext_xattr {
1674 char cr_xattr[XATTR_NAME_MAX + 1]; /**< zero-terminated string. */
1677 static inline struct changelog_ext_extra_flags *changelog_rec_extra_flags(
1678 const struct changelog_rec *rec);
1680 static inline size_t changelog_rec_offset(enum changelog_rec_flags crf,
1681 enum changelog_rec_extra_flags cref)
1683 size_t size = sizeof(struct changelog_rec);
1685 if (crf & CLF_RENAME)
1686 size += sizeof(struct changelog_ext_rename);
1688 if (crf & CLF_JOBID)
1689 size += sizeof(struct changelog_ext_jobid);
1691 if (crf & CLF_EXTRA_FLAGS) {
1692 size += sizeof(struct changelog_ext_extra_flags);
1693 if (cref & CLFE_UIDGID)
1694 size += sizeof(struct changelog_ext_uidgid);
1695 if (cref & CLFE_NID)
1696 size += sizeof(struct changelog_ext_nid);
1697 if (cref & CLFE_OPEN)
1698 size += sizeof(struct changelog_ext_openmode);
1699 if (cref & CLFE_XATTR)
1700 size += sizeof(struct changelog_ext_xattr);
1706 static inline size_t changelog_rec_size(const struct changelog_rec *rec)
1708 enum changelog_rec_extra_flags cref = CLFE_INVALID;
1710 if (rec->cr_flags & CLF_EXTRA_FLAGS)
1711 cref = (enum changelog_rec_extra_flags)
1712 changelog_rec_extra_flags(rec)->cr_extra_flags;
1714 return changelog_rec_offset(
1715 (enum changelog_rec_flags)rec->cr_flags, cref);
1718 static inline size_t changelog_rec_varsize(const struct changelog_rec *rec)
1720 return changelog_rec_size(rec) - sizeof(*rec) + rec->cr_namelen;
1724 struct changelog_ext_rename *changelog_rec_rename(const struct changelog_rec *rec)
1726 enum changelog_rec_flags crf = (enum changelog_rec_flags)
1727 (rec->cr_flags & CLF_VERSION);
1729 return (struct changelog_ext_rename *)((char *)rec +
1730 changelog_rec_offset(crf,
1734 /* The jobid follows the rename extension, if present */
1736 struct changelog_ext_jobid *changelog_rec_jobid(const struct changelog_rec *rec)
1738 enum changelog_rec_flags crf = (enum changelog_rec_flags)
1739 (rec->cr_flags & (CLF_VERSION | CLF_RENAME));
1741 return (struct changelog_ext_jobid *)((char *)rec +
1742 changelog_rec_offset(crf,
1746 /* The additional flags follow the rename and jobid extensions, if present */
1748 struct changelog_ext_extra_flags *changelog_rec_extra_flags(
1749 const struct changelog_rec *rec)
1751 enum changelog_rec_flags crf = (enum changelog_rec_flags)
1752 (rec->cr_flags & (CLF_VERSION | CLF_RENAME | CLF_JOBID));
1754 return (struct changelog_ext_extra_flags *)((char *)rec +
1755 changelog_rec_offset(crf,
1759 /* The uid/gid is the first extra extension */
1761 struct changelog_ext_uidgid *changelog_rec_uidgid(
1762 const struct changelog_rec *rec)
1764 enum changelog_rec_flags crf = (enum changelog_rec_flags)
1766 (CLF_VERSION | CLF_RENAME | CLF_JOBID | CLF_EXTRA_FLAGS));
1768 return (struct changelog_ext_uidgid *)((char *)rec +
1769 changelog_rec_offset(crf,
1773 /* The nid is the second extra extension */
1775 struct changelog_ext_nid *changelog_rec_nid(const struct changelog_rec *rec)
1777 enum changelog_rec_flags crf = (enum changelog_rec_flags)
1779 (CLF_VERSION | CLF_RENAME | CLF_JOBID | CLF_EXTRA_FLAGS));
1780 enum changelog_rec_extra_flags cref = CLFE_INVALID;
1782 if (rec->cr_flags & CLF_EXTRA_FLAGS)
1783 cref = (enum changelog_rec_extra_flags)
1784 (changelog_rec_extra_flags(rec)->cr_extra_flags &
1787 return (struct changelog_ext_nid *)((char *)rec +
1788 changelog_rec_offset(crf, cref));
1791 /* The OPEN mode is the third extra extension */
1793 struct changelog_ext_openmode *changelog_rec_openmode(
1794 const struct changelog_rec *rec)
1796 enum changelog_rec_flags crf = (enum changelog_rec_flags)
1798 (CLF_VERSION | CLF_RENAME | CLF_JOBID | CLF_EXTRA_FLAGS));
1799 enum changelog_rec_extra_flags cref = CLFE_INVALID;
1801 if (rec->cr_flags & CLF_EXTRA_FLAGS) {
1802 cref = (enum changelog_rec_extra_flags)
1803 (changelog_rec_extra_flags(rec)->cr_extra_flags &
1804 (CLFE_UIDGID | CLFE_NID));
1807 return (struct changelog_ext_openmode *)((char *)rec +
1808 changelog_rec_offset(crf, cref));
1811 /* The xattr name is the fourth extra extension */
1813 struct changelog_ext_xattr *changelog_rec_xattr(
1814 const struct changelog_rec *rec)
1816 enum changelog_rec_flags crf = (enum changelog_rec_flags)
1818 (CLF_VERSION | CLF_RENAME | CLF_JOBID | CLF_EXTRA_FLAGS));
1819 enum changelog_rec_extra_flags cref = CLFE_INVALID;
1821 if (rec->cr_flags & CLF_EXTRA_FLAGS)
1822 cref = (enum changelog_rec_extra_flags)
1823 (changelog_rec_extra_flags(rec)->cr_extra_flags &
1824 (CLFE_UIDGID | CLFE_NID | CLFE_OPEN));
1826 return (struct changelog_ext_xattr *)((char *)rec +
1827 changelog_rec_offset(crf, cref));
1830 /* The name follows the rename, jobid and extra flags extns, if present */
1831 static inline char *changelog_rec_name(const struct changelog_rec *rec)
1833 enum changelog_rec_extra_flags cref = CLFE_INVALID;
1835 if (rec->cr_flags & CLF_EXTRA_FLAGS)
1836 cref = (enum changelog_rec_extra_flags)
1837 changelog_rec_extra_flags(rec)->cr_extra_flags;
1839 return (char *)rec + changelog_rec_offset(
1840 (enum changelog_rec_flags)(rec->cr_flags & CLF_SUPPORTED),
1841 (enum changelog_rec_extra_flags)(cref & CLFE_SUPPORTED));
1844 static inline size_t changelog_rec_snamelen(const struct changelog_rec *rec)
1846 return rec->cr_namelen - strlen(changelog_rec_name(rec)) - 1;
1849 static inline char *changelog_rec_sname(const struct changelog_rec *rec)
1851 char *cr_name = changelog_rec_name(rec);
1853 return cr_name + strlen(cr_name) + 1;
1857 * Remap a record to the desired format as specified by the crf flags.
1858 * The record must be big enough to contain the final remapped version.
1859 * Superfluous extension fields are removed and missing ones are added
1860 * and zeroed. The flags of the record are updated accordingly.
1862 * The jobid and rename extensions can be added to a record, to match the
1863 * format an application expects, typically. In this case, the newly added
1864 * fields will be zeroed.
1865 * The Jobid field can be removed, to guarantee compatibility with older
1866 * clients that don't expect this field in the records they process.
1868 * The following assumptions are being made:
1869 * - CLF_RENAME will not be removed
1870 * - CLF_JOBID will not be added without CLF_RENAME being added too
1871 * - CLF_EXTRA_FLAGS will not be added without CLF_JOBID being added too
1873 * @param[in,out] rec The record to remap.
1874 * @param[in] crf_wanted Flags describing the desired extensions.
1875 * @param[in] cref_want Flags describing the desired extra extensions.
1877 static inline void changelog_remap_rec(struct changelog_rec *rec,
1878 enum changelog_rec_flags crf_wanted,
1879 enum changelog_rec_extra_flags cref_want)
1881 char *xattr_mov = NULL;
1882 char *omd_mov = NULL;
1883 char *nid_mov = NULL;
1884 char *uidgid_mov = NULL;
1888 enum changelog_rec_extra_flags cref = CLFE_INVALID;
1890 crf_wanted = (enum changelog_rec_flags)
1891 (crf_wanted & CLF_SUPPORTED);
1892 cref_want = (enum changelog_rec_extra_flags)
1893 (cref_want & CLFE_SUPPORTED);
1895 if ((rec->cr_flags & CLF_SUPPORTED) == crf_wanted) {
1896 if (!(rec->cr_flags & CLF_EXTRA_FLAGS) ||
1897 (rec->cr_flags & CLF_EXTRA_FLAGS &&
1898 (changelog_rec_extra_flags(rec)->cr_extra_flags &
1904 /* First move the variable-length name field */
1905 memmove((char *)rec + changelog_rec_offset(crf_wanted, cref_want),
1906 changelog_rec_name(rec), rec->cr_namelen);
1908 /* Locations of extensions in the remapped record */
1909 if (rec->cr_flags & CLF_EXTRA_FLAGS) {
1910 xattr_mov = (char *)rec +
1911 changelog_rec_offset(
1912 (enum changelog_rec_flags)
1913 (crf_wanted & CLF_SUPPORTED),
1914 (enum changelog_rec_extra_flags)
1915 (cref_want & ~CLFE_XATTR));
1916 omd_mov = (char *)rec +
1917 changelog_rec_offset(
1918 (enum changelog_rec_flags)
1919 (crf_wanted & CLF_SUPPORTED),
1920 (enum changelog_rec_extra_flags)
1921 (cref_want & ~(CLFE_OPEN | CLFE_XATTR)));
1922 nid_mov = (char *)rec +
1923 changelog_rec_offset(
1924 (enum changelog_rec_flags)
1925 (crf_wanted & CLF_SUPPORTED),
1926 (enum changelog_rec_extra_flags)
1928 ~(CLFE_NID | CLFE_OPEN | CLFE_XATTR)));
1929 uidgid_mov = (char *)rec +
1930 changelog_rec_offset(
1931 (enum changelog_rec_flags)
1932 (crf_wanted & CLF_SUPPORTED),
1933 (enum changelog_rec_extra_flags)
1934 (cref_want & ~(CLFE_UIDGID |
1938 cref = (enum changelog_rec_extra_flags)
1939 changelog_rec_extra_flags(rec)->cr_extra_flags;
1942 ef_mov = (char *)rec +
1943 changelog_rec_offset(
1944 (enum changelog_rec_flags)
1945 (crf_wanted & ~CLF_EXTRA_FLAGS), CLFE_INVALID);
1946 jid_mov = (char *)rec +
1947 changelog_rec_offset((enum changelog_rec_flags)(crf_wanted &
1948 ~(CLF_EXTRA_FLAGS | CLF_JOBID)),
1950 rnm_mov = (char *)rec +
1951 changelog_rec_offset((enum changelog_rec_flags)(crf_wanted &
1957 /* Move the extension fields to the desired positions */
1958 if ((crf_wanted & CLF_EXTRA_FLAGS) &&
1959 (rec->cr_flags & CLF_EXTRA_FLAGS)) {
1960 if ((cref_want & CLFE_XATTR) && (cref & CLFE_XATTR))
1961 memmove(xattr_mov, changelog_rec_xattr(rec),
1962 sizeof(struct changelog_ext_xattr));
1964 if ((cref_want & CLFE_OPEN) && (cref & CLFE_OPEN))
1965 memmove(omd_mov, changelog_rec_openmode(rec),
1966 sizeof(struct changelog_ext_openmode));
1968 if ((cref_want & CLFE_NID) && (cref & CLFE_NID))
1969 memmove(nid_mov, changelog_rec_nid(rec),
1970 sizeof(struct changelog_ext_nid));
1972 if ((cref_want & CLFE_UIDGID) && (cref & CLFE_UIDGID))
1973 memmove(uidgid_mov, changelog_rec_uidgid(rec),
1974 sizeof(struct changelog_ext_uidgid));
1976 memmove(ef_mov, changelog_rec_extra_flags(rec),
1977 sizeof(struct changelog_ext_extra_flags));
1980 if ((crf_wanted & CLF_JOBID) && (rec->cr_flags & CLF_JOBID))
1981 memmove(jid_mov, changelog_rec_jobid(rec),
1982 sizeof(struct changelog_ext_jobid));
1984 if ((crf_wanted & CLF_RENAME) && (rec->cr_flags & CLF_RENAME))
1985 memmove(rnm_mov, changelog_rec_rename(rec),
1986 sizeof(struct changelog_ext_rename));
1988 /* Clear newly added fields */
1989 if (xattr_mov && (cref_want & CLFE_XATTR) &&
1990 !(cref & CLFE_XATTR))
1991 memset(xattr_mov, 0, sizeof(struct changelog_ext_xattr));
1993 if (omd_mov && (cref_want & CLFE_OPEN) &&
1994 !(cref & CLFE_OPEN))
1995 memset(omd_mov, 0, sizeof(struct changelog_ext_openmode));
1997 if (nid_mov && (cref_want & CLFE_NID) &&
1999 memset(nid_mov, 0, sizeof(struct changelog_ext_nid));
2001 if (uidgid_mov && (cref_want & CLFE_UIDGID) &&
2002 !(cref & CLFE_UIDGID))
2003 memset(uidgid_mov, 0, sizeof(struct changelog_ext_uidgid));
2005 if ((crf_wanted & CLF_EXTRA_FLAGS) &&
2006 !(rec->cr_flags & CLF_EXTRA_FLAGS))
2007 memset(ef_mov, 0, sizeof(struct changelog_ext_extra_flags));
2009 if ((crf_wanted & CLF_JOBID) && !(rec->cr_flags & CLF_JOBID))
2010 memset(jid_mov, 0, sizeof(struct changelog_ext_jobid));
2012 if ((crf_wanted & CLF_RENAME) && !(rec->cr_flags & CLF_RENAME))
2013 memset(rnm_mov, 0, sizeof(struct changelog_ext_rename));
2015 /* Update the record's flags accordingly */
2016 rec->cr_flags = (rec->cr_flags & CLF_FLAGMASK) | crf_wanted;
2017 if (rec->cr_flags & CLF_EXTRA_FLAGS)
2018 changelog_rec_extra_flags(rec)->cr_extra_flags =
2019 changelog_rec_extra_flags(rec)->cr_extra_flags |
2023 enum changelog_message_type {
2024 CL_RECORD = 10, /* message is a changelog_rec */
2025 CL_EOF = 11, /* at end of current changelog */
2028 /********* Misc **********/
2030 struct ioc_data_version {
2032 __u32 idv_layout_version; /* FLR: layout version for OST objects */
2033 __u32 idv_flags; /* enum ioc_data_version_flags */
2036 enum ioc_data_version_flags {
2037 LL_DV_RD_FLUSH = (1 << 0), /* Flush dirty pages from clients */
2038 LL_DV_WR_FLUSH = (1 << 1), /* Flush all caching pages from clients */
2042 #define offsetof(typ, memb) ((unsigned long)((char *)&(((typ *)0)->memb)))
2045 #define dot_lustre_name ".lustre"
2048 /********* HSM **********/
2050 /** HSM per-file state
2051 * See HSM_FLAGS below.
2054 HS_NONE = 0x00000000,
2055 HS_EXISTS = 0x00000001,
2056 HS_DIRTY = 0x00000002,
2057 HS_RELEASED = 0x00000004,
2058 HS_ARCHIVED = 0x00000008,
2059 HS_NORELEASE = 0x00000010,
2060 HS_NOARCHIVE = 0x00000020,
2061 HS_LOST = 0x00000040,
2064 /* HSM user-setable flags. */
2065 #define HSM_USER_MASK (HS_NORELEASE | HS_NOARCHIVE | HS_DIRTY)
2067 /* Other HSM flags. */
2068 #define HSM_STATUS_MASK (HS_EXISTS | HS_LOST | HS_RELEASED | HS_ARCHIVED)
2071 * All HSM-related possible flags that could be applied to a file.
2072 * This should be kept in sync with hsm_states.
2074 #define HSM_FLAGS_MASK (HSM_USER_MASK | HSM_STATUS_MASK)
2077 * HSM request progress state
2079 enum hsm_progress_states {
2086 static inline const char *hsm_progress_state2name(enum hsm_progress_states s)
2089 case HPS_WAITING: return "waiting";
2090 case HPS_RUNNING: return "running";
2091 case HPS_DONE: return "done";
2092 default: return "unknown";
2099 } __attribute__((packed));
2102 * Current HSM states of a Lustre file.
2104 * This structure purpose is to be sent to user-space mainly. It describes the
2105 * current HSM flags and in-progress action.
2107 struct hsm_user_state {
2108 /** Current HSM states, from enum hsm_states. */
2110 __u32 hus_archive_id;
2111 /** The current undergoing action, if there is one */
2112 __u32 hus_in_progress_state;
2113 __u32 hus_in_progress_action;
2114 struct hsm_extent hus_in_progress_location;
2115 char hus_extended_info[];
2118 struct hsm_state_set_ioc {
2119 struct lu_fid hssi_fid;
2121 __u64 hssi_clearmask;
2125 * This structure describes the current in-progress action for a file.
2126 * it is retuned to user space and send over the wire
2128 struct hsm_current_action {
2129 /** The current undergoing action, if there is one */
2130 /* state is one of hsm_progress_states */
2132 /* action is one of hsm_user_action */
2134 struct hsm_extent hca_location;
2137 /***** HSM user requests ******/
2138 /* User-generated (lfs/ioctl) request types */
2139 enum hsm_user_action {
2140 HUA_NONE = 1, /* no action (noop) */
2141 HUA_ARCHIVE = 10, /* copy to hsm */
2142 HUA_RESTORE = 11, /* prestage */
2143 HUA_RELEASE = 12, /* drop ost objects */
2144 HUA_REMOVE = 13, /* remove from archive */
2145 HUA_CANCEL = 14 /* cancel a request */
2148 static inline const char *hsm_user_action2name(enum hsm_user_action a)
2151 case HUA_NONE: return "NOOP";
2152 case HUA_ARCHIVE: return "ARCHIVE";
2153 case HUA_RESTORE: return "RESTORE";
2154 case HUA_RELEASE: return "RELEASE";
2155 case HUA_REMOVE: return "REMOVE";
2156 case HUA_CANCEL: return "CANCEL";
2157 default: return "UNKNOWN";
2162 * List of hr_flags (bit field)
2164 #define HSM_FORCE_ACTION 0x0001
2165 /* used by CT, cannot be set by user */
2166 #define HSM_GHOST_COPY 0x0002
2169 * Contains all the fixed part of struct hsm_user_request.
2172 struct hsm_request {
2173 __u32 hr_action; /* enum hsm_user_action */
2174 __u32 hr_archive_id; /* archive id, used only with HUA_ARCHIVE */
2175 __u64 hr_flags; /* request flags */
2176 __u32 hr_itemcount; /* item count in hur_user_item vector */
2180 struct hsm_user_item {
2181 struct lu_fid hui_fid;
2182 struct hsm_extent hui_extent;
2183 } __attribute__((packed));
2185 struct hsm_user_request {
2186 struct hsm_request hur_request;
2187 struct hsm_user_item hur_user_item[0];
2188 /* extra data blob at end of struct (after all
2189 * hur_user_items), only use helpers to access it
2191 } __attribute__((packed));
2193 /** Return pointer to data field in a hsm user request */
2194 static inline void *hur_data(struct hsm_user_request *hur)
2196 return &(hur->hur_user_item[hur->hur_request.hr_itemcount]);
2200 * Compute the current length of the provided hsm_user_request. This returns -1
2201 * instead of an errno because ssize_t is defined to be only [ -1, SSIZE_MAX ]
2203 * return -1 on bounds check error.
2205 static inline ssize_t hur_len(struct hsm_user_request *hur)
2209 /* can't overflow a __u64 since hr_itemcount is only __u32 */
2210 size = offsetof(struct hsm_user_request, hur_user_item[0]) +
2211 (__u64)hur->hur_request.hr_itemcount *
2212 sizeof(hur->hur_user_item[0]) + hur->hur_request.hr_data_len;
2214 if ((ssize_t)size < 0)
2220 /****** HSM RPCs to copytool *****/
2221 /* Message types the copytool may receive */
2222 enum hsm_message_type {
2223 HMT_ACTION_LIST = 100, /* message is a hsm_action_list */
2226 /* Actions the copytool may be instructed to take for a given action_item */
2227 enum hsm_copytool_action {
2228 HSMA_NONE = 10, /* no action */
2229 HSMA_ARCHIVE = 20, /* arbitrary offset */
2235 static inline const char *hsm_copytool_action2name(enum hsm_copytool_action a)
2238 case HSMA_NONE: return "NOOP";
2239 case HSMA_ARCHIVE: return "ARCHIVE";
2240 case HSMA_RESTORE: return "RESTORE";
2241 case HSMA_REMOVE: return "REMOVE";
2242 case HSMA_CANCEL: return "CANCEL";
2243 default: return "UNKNOWN";
2247 /* Copytool item action description */
2248 struct hsm_action_item {
2249 __u32 hai_len; /* valid size of this struct */
2250 __u32 hai_action; /* hsm_copytool_action, but use known size */
2251 struct lu_fid hai_fid; /* Lustre FID to operate on */
2252 struct lu_fid hai_dfid; /* fid used for data access */
2253 struct hsm_extent hai_extent; /* byte range to operate on */
2254 __u64 hai_cookie; /* action cookie from coordinator */
2255 __u64 hai_gid; /* grouplock id */
2256 char hai_data[0]; /* variable length */
2257 } __attribute__((packed));
2260 * helper function which print in hexa the first bytes of
2263 * \param hai [IN] record to print
2264 * \param buffer [IN,OUT] buffer to write the hex string to
2265 * \param len [IN] max buffer length
2269 static inline char *hai_dump_data_field(const struct hsm_action_item *hai,
2270 char *buffer, size_t len)
2277 data_len = hai->hai_len - sizeof(*hai);
2278 for (i = 0; (i < data_len) && (len > 2); i++) {
2279 snprintf(ptr, 3, "%02X", (unsigned char)hai->hai_data[i]);
2289 /* Copytool action list */
2290 #define HAL_VERSION 1
2291 #define HAL_MAXSIZE LNET_MTU /* bytes, used in userspace only */
2292 struct hsm_action_list {
2294 __u32 hal_count; /* number of hai's to follow */
2295 __u64 hal_compound_id; /* returned by coordinator, ignored */
2297 __u32 hal_archive_id; /* which archive backend */
2299 char hal_fsname[0]; /* null-terminated */
2300 /* struct hsm_action_item[hal_count] follows, aligned on 8-byte
2301 boundaries. See hai_zero */
2302 } __attribute__((packed));
2304 /* Return pointer to first hai in action list */
2305 static inline struct hsm_action_item *hai_first(struct hsm_action_list *hal)
2307 size_t offset = __ALIGN_KERNEL(strlen(hal->hal_fsname) + 1, 8);
2309 return (struct hsm_action_item *)(hal->hal_fsname + offset);
2312 /* Return pointer to next hai */
2313 static inline struct hsm_action_item * hai_next(struct hsm_action_item *hai)
2315 size_t offset = __ALIGN_KERNEL(hai->hai_len, 8);
2317 return (struct hsm_action_item *)((char *)hai + offset);
2320 /* Return size of an hsm_action_list */
2321 static inline size_t hal_size(struct hsm_action_list *hal)
2325 struct hsm_action_item *hai;
2327 sz = sizeof(*hal) + __ALIGN_KERNEL(strlen(hal->hal_fsname) + 1, 8);
2328 hai = hai_first(hal);
2329 for (i = 0; i < hal->hal_count ; i++, hai = hai_next(hai))
2330 sz += __ALIGN_KERNEL(hai->hai_len, 8);
2336 * describe the attributes to be set on imported file
2338 struct hsm_user_import {
2347 __u32 hui_archive_id;
2350 /* Copytool progress reporting */
2351 #define HP_FLAG_COMPLETED 0x01
2352 #define HP_FLAG_RETRY 0x02
2354 struct hsm_progress {
2355 struct lu_fid hp_fid;
2357 struct hsm_extent hp_extent;
2359 __u16 hp_errval; /* positive val */
2364 __u64 hc_data_version;
2366 __u16 hc_errval; /* positive val */
2368 struct hsm_action_item hc_hai;
2372 enum llapi_json_types {
2373 LLAPI_JSON_INTEGER = 1,
2379 struct llapi_json_item {
2388 struct llapi_json_item *lji_next;
2391 struct llapi_json_item_list {
2392 int ljil_item_count;
2393 struct llapi_json_item *ljil_items;
2396 enum lu_ladvise_type {
2397 LU_LADVISE_INVALID = 0,
2398 LU_LADVISE_WILLREAD = 1,
2399 LU_LADVISE_DONTNEED = 2,
2400 LU_LADVISE_LOCKNOEXPAND = 3,
2401 LU_LADVISE_LOCKAHEAD = 4,
2405 #define LU_LADVISE_NAMES { \
2406 [LU_LADVISE_WILLREAD] = "willread", \
2407 [LU_LADVISE_DONTNEED] = "dontneed", \
2408 [LU_LADVISE_LOCKNOEXPAND] = "locknoexpand", \
2409 [LU_LADVISE_LOCKAHEAD] = "lockahead", \
2412 /* This is the userspace argument for ladvise. It is currently the same as
2413 * what goes on the wire (struct lu_ladvise), but is defined separately as we
2414 * may need info which is only used locally. */
2415 struct llapi_lu_ladvise {
2416 __u16 lla_advice; /* advice type */
2417 __u16 lla_value1; /* values for different advice types */
2419 __u64 lla_start; /* first byte of extent for advice */
2420 __u64 lla_end; /* last byte of extent for advice */
2426 LF_ASYNC = 0x00000001,
2427 LF_UNSET = 0x00000002,
2430 #define LADVISE_MAGIC 0x1ADF1CE0
2431 /* Masks of valid flags for each advice */
2432 #define LF_LOCKNOEXPAND_MASK LF_UNSET
2433 /* Flags valid for all advices not explicitly specified */
2434 #define LF_DEFAULT_MASK LF_ASYNC
2436 #define LF_MASK (LF_ASYNC | LF_UNSET)
2438 #define lla_lockahead_mode lla_value1
2439 #define lla_peradvice_flags lla_value2
2440 #define lla_lockahead_result lla_value3
2442 /* This is the userspace argument for ladvise, corresponds to ladvise_hdr which
2443 * is used on the wire. It is defined separately as we may need info which is
2444 * only used locally. */
2445 struct llapi_ladvise_hdr {
2446 __u32 lah_magic; /* LADVISE_MAGIC */
2447 __u32 lah_count; /* number of advices */
2448 __u64 lah_flags; /* from enum ladvise_flag */
2449 __u32 lah_value1; /* unused */
2450 __u32 lah_value2; /* unused */
2451 __u64 lah_value3; /* unused */
2452 struct llapi_lu_ladvise lah_advise[0]; /* advices in this header */
2455 #define LAH_COUNT_MAX (1024)
2459 SK_CRYPT_INVALID = -1,
2461 SK_CRYPT_AES256_CTR = 1,
2465 SK_HMAC_INVALID = -1,
2471 struct sk_crypt_type {
2472 const char *sct_name;
2476 struct sk_hmac_type {
2477 const char *sht_name;
2481 enum lock_mode_user {
2487 #define LOCK_MODE_NAMES { \
2488 [MODE_READ_USER] = "READ",\
2489 [MODE_WRITE_USER] = "WRITE"\
2492 enum lockahead_results {
2493 LLA_RESULT_SENT = 0,
2494 LLA_RESULT_DIFFERENT,
2498 enum lu_heat_flag_bit {
2499 LU_HEAT_FLAG_BIT_INVALID = 0,
2500 LU_HEAT_FLAG_BIT_OFF,
2501 LU_HEAT_FLAG_BIT_CLEAR,
2505 LU_HEAT_FLAG_OFF = 1ULL << LU_HEAT_FLAG_BIT_OFF,
2506 LU_HEAT_FLAG_CLEAR = 1ULL << LU_HEAT_FLAG_BIT_CLEAR,
2509 enum obd_heat_type {
2510 OBD_HEAT_READSAMPLE = 0,
2511 OBD_HEAT_WRITESAMPLE = 1,
2512 OBD_HEAT_READBYTE = 2,
2513 OBD_HEAT_WRITEBYTE = 3,
2517 #define LU_HEAT_NAMES { \
2518 [OBD_HEAT_READSAMPLE] = "readsample", \
2519 [OBD_HEAT_WRITESAMPLE] = "writesample", \
2520 [OBD_HEAT_READBYTE] = "readbyte", \
2521 [OBD_HEAT_WRITEBYTE] = "writebyte", \
2536 static inline const char *pcc_type2string(enum lu_pcc_type type)
2541 case LU_PCC_READWRITE:
2548 struct lu_pcc_attach {
2549 __u32 pcca_type; /* PCC type */
2550 __u32 pcca_id; /* archive ID for readwrite, group ID for readonly */
2553 enum lu_pcc_detach_opts {
2554 PCC_DETACH_OPT_NONE = 0, /* Detach only, keep the PCC copy */
2555 PCC_DETACH_OPT_UNCACHE, /* Remove the cached file after detach */
2558 struct lu_pcc_detach_fid {
2559 /* fid of the file to detach */
2560 struct lu_fid pccd_fid;
2564 struct lu_pcc_detach {
2568 enum lu_pcc_state_flags {
2569 PCC_STATE_FL_NONE = 0x0,
2570 /* The inode attr is cached locally */
2571 PCC_STATE_FL_ATTR_VALID = 0x01,
2572 /* The file is being attached into PCC */
2573 PCC_STATE_FL_ATTACHING = 0x02,
2574 /* Allow to auto attach at open */
2575 PCC_STATE_FL_OPEN_ATTACH = 0x04,
2576 /* Allow to auto attach during I/O after layout lock revocation */
2577 PCC_STATE_FL_IO_ATTACH = 0x08,
2578 /* Allow to auto attach at stat */
2579 PCC_STATE_FL_STAT_ATTACH = 0x10,
2580 /* Allow to auto attach at the next open or layout refresh */
2581 PCC_STATE_FL_AUTO_ATTACH = PCC_STATE_FL_OPEN_ATTACH |
2582 PCC_STATE_FL_IO_ATTACH |
2583 PCC_STATE_FL_STAT_ATTACH,
2586 struct lu_pcc_state {
2587 __u32 pccs_type; /* enum lu_pcc_type */
2588 __u32 pccs_open_count;
2589 __u32 pccs_flags; /* enum lu_pcc_state_flags */
2591 char pccs_path[PATH_MAX];
2596 /* make header's size equal lu_fid */
2599 struct lu_fid fa_fids[0];
2601 #define OBD_MAX_FIDS_IN_ARRAY 4096
2603 #if defined(__cplusplus)
2607 /** @} lustreuser */
2609 #endif /* _LUSTRE_USER_H */