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 # define FILEID_LUSTRE 0x97 /* for name_to_handle_at() (and llapi_fd2fid()) */
65 #endif /* __KERNEL__ */
67 /* Handle older distros */
68 #ifndef __ALIGN_KERNEL
69 # define __ALIGN_KERNEL(x, a) __ALIGN_KERNEL_MASK(x, (typeof(x))(a) - 1)
70 # define __ALIGN_KERNEL_MASK(x, mask) (((x) + (mask)) & ~(mask))
73 #if defined(__cplusplus)
78 * This is a temporary solution of adding quota type.
79 * Should be removed as soon as system header is updated.
82 #define LL_MAXQUOTAS 3
84 #define INITQFNAMES { \
85 "user", /* USRQUOTA */ \
86 "group", /* GRPQUOTA */ \
87 "project", /* PRJQUOTA */ \
101 * We need to always use 64bit version because the structure
102 * is shared across entire cluster where 32bit and 64bit machines
105 #if __BITS_PER_LONG != 64 || defined(__ARCH_WANT_STAT64)
106 typedef struct stat64 lstat_t;
107 #define lstat_f lstat64
108 #define fstat_f fstat64
109 #define fstatat_f fstatat64
111 typedef struct stat lstat_t;
112 #define lstat_f lstat
113 #define fstat_f fstat
114 #define fstatat_f fstatat
117 #ifndef STATX_BASIC_STATS
119 * Timestamp structure for the timestamps in struct statx.
121 * tv_sec holds the number of seconds before (negative) or after (positive)
122 * 00:00:00 1st January 1970 UTC.
124 * tv_nsec holds a number of nanoseconds (0..999,999,999) after the tv_sec time.
126 * __reserved is held in case we need a yet finer resolution.
128 struct statx_timestamp {
135 * Structures for the extended file attribute retrieval system call
138 * The caller passes a mask of what they're specifically interested in as a
139 * parameter to statx(). What statx() actually got will be indicated in
140 * st_mask upon return.
142 * For each bit in the mask argument:
144 * - if the datum is not supported:
146 * - the bit will be cleared, and
148 * - the datum will be set to an appropriate fabricated value if one is
149 * available (eg. CIFS can take a default uid and gid), otherwise
151 * - the field will be cleared;
153 * - otherwise, if explicitly requested:
155 * - the datum will be synchronised to the server if AT_STATX_FORCE_SYNC is
156 * set or if the datum is considered out of date, and
158 * - the field will be filled in and the bit will be set;
160 * - otherwise, if not requested, but available in approximate form without any
161 * effort, it will be filled in anyway, and the bit will be set upon return
162 * (it might not be up to date, however, and no attempt will be made to
163 * synchronise the internal state first);
165 * - otherwise the field and the bit will be cleared before returning.
167 * Items in STATX_BASIC_STATS may be marked unavailable on return, but they
168 * will have values installed for compatibility purposes so that stat() and
169 * co. can be emulated in userspace.
173 __u32 stx_mask; /* What results were written [uncond] */
174 __u32 stx_blksize; /* Preferred general I/O size [uncond] */
175 __u64 stx_attributes; /* Flags conveying information about the file [uncond] */
177 __u32 stx_nlink; /* Number of hard links */
178 __u32 stx_uid; /* User ID of owner */
179 __u32 stx_gid; /* Group ID of owner */
180 __u16 stx_mode; /* File mode */
183 __u64 stx_ino; /* Inode number */
184 __u64 stx_size; /* File size */
185 __u64 stx_blocks; /* Number of 512-byte blocks allocated */
186 __u64 stx_attributes_mask; /* Mask to show what's supported in stx_attributes */
188 struct statx_timestamp stx_atime; /* Last access time */
189 struct statx_timestamp stx_btime; /* File creation time */
190 struct statx_timestamp stx_ctime; /* Last attribute change time */
191 struct statx_timestamp stx_mtime; /* Last data modification time */
193 __u32 stx_rdev_major; /* Device ID of special file [if bdev/cdev] */
194 __u32 stx_rdev_minor;
195 __u32 stx_dev_major; /* ID of device containing file [uncond] */
198 __u64 __spare2[14]; /* Spare space for future expansion */
203 * Flags to be stx_mask
205 * Query request/result mask for statx() and struct statx::stx_mask.
207 * These bits should be set in the mask argument of statx() to request
208 * particular items when calling statx().
210 #define STATX_TYPE 0x00000001U /* Want/got stx_mode & S_IFMT */
211 #define STATX_MODE 0x00000002U /* Want/got stx_mode & ~S_IFMT */
212 #define STATX_NLINK 0x00000004U /* Want/got stx_nlink */
213 #define STATX_UID 0x00000008U /* Want/got stx_uid */
214 #define STATX_GID 0x00000010U /* Want/got stx_gid */
215 #define STATX_ATIME 0x00000020U /* Want/got stx_atime */
216 #define STATX_MTIME 0x00000040U /* Want/got stx_mtime */
217 #define STATX_CTIME 0x00000080U /* Want/got stx_ctime */
218 #define STATX_INO 0x00000100U /* Want/got stx_ino */
219 #define STATX_SIZE 0x00000200U /* Want/got stx_size */
220 #define STATX_BLOCKS 0x00000400U /* Want/got stx_blocks */
221 #define STATX_BASIC_STATS 0x000007ffU /* The stuff in the normal stat struct */
222 #define STATX_BTIME 0x00000800U /* Want/got stx_btime */
223 #define STATX_ALL 0x00000fffU /* All currently supported flags */
224 #define STATX__RESERVED 0x80000000U /* Reserved for future struct statx expansion */
227 * Attributes to be found in stx_attributes and masked in stx_attributes_mask.
229 * These give information about the features or the state of a file that might
230 * be of use to ordinary userspace programs such as GUIs or ls rather than
233 * Note that the flags marked [I] correspond to generic FS_IOC_FLAGS
234 * semantically. Where possible, the numerical value is picked to correspond
237 #define STATX_ATTR_COMPRESSED 0x00000004 /* [I] File is compressed by the fs */
238 #define STATX_ATTR_IMMUTABLE 0x00000010 /* [I] File is marked immutable */
239 #define STATX_ATTR_APPEND 0x00000020 /* [I] File is append-only */
240 #define STATX_ATTR_NODUMP 0x00000040 /* [I] File is not to be dumped */
241 #define STATX_ATTR_ENCRYPTED 0x00000800 /* [I] File requires key to decrypt in fs */
243 #define STATX_ATTR_AUTOMOUNT 0x00001000 /* Dir: Automount trigger */
247 typedef struct statx lstatx_t;
249 #define HAVE_LOV_USER_MDS_DATA
251 #define LUSTRE_EOF 0xffffffffffffffffULL
254 #define LL_SUPER_MAGIC 0x0BD00BD0
256 #define FSFILT_IOC_GETVERSION _IOR('f', 3, long)
258 /* FIEMAP flags supported by Lustre */
259 #define LUSTRE_FIEMAP_FLAGS_COMPAT (FIEMAP_FLAG_SYNC | FIEMAP_FLAG_DEVICE_ORDER)
261 enum obd_statfs_state {
262 OS_STATE_DEGRADED = 0x00000001, /**< RAID degraded/rebuilding */
263 OS_STATE_READONLY = 0x00000002, /**< filesystem is read-only */
264 OS_STATE_NOPRECREATE = 0x00000004, /**< no object precreation */
265 OS_STATE_UNUSED1 = 0x00000008, /**< obsolete 1.6, was EROFS=30 */
266 OS_STATE_UNUSED2 = 0x00000010, /**< obsolete 1.6, was EROFS=30 */
267 OS_STATE_ENOSPC = 0x00000020, /**< not enough free space */
268 OS_STATE_ENOINO = 0x00000040, /**< not enough inodes */
269 OS_STATE_SUM = 0x00000100, /**< aggregated for all tagrets */
270 OS_STATE_NONROT = 0x00000200, /**< non-rotational device */
273 /** filesystem statistics/attributes for target device */
275 __u64 os_type; /* EXT4_SUPER_MAGIC, UBERBLOCK_MAGIC */
276 __u64 os_blocks; /* total size in #os_bsize blocks */
277 __u64 os_bfree; /* number of unused blocks */
278 __u64 os_bavail; /* blocks available for allocation */
279 __u64 os_files; /* total number of objects */
280 __u64 os_ffree; /* # objects that could be created */
281 __u8 os_fsid[40]; /* identifier for filesystem */
282 __u32 os_bsize; /* block size in bytes for os_blocks */
283 __u32 os_namelen; /* maximum length of filename in bytes*/
284 __u64 os_maxbytes; /* maximum object size in bytes */
285 __u32 os_state; /**< obd_statfs_state OS_STATE_* flag */
286 __u32 os_fprecreated; /* objs available now to the caller */
287 /* used in QoS code to find preferred
289 __u32 os_granted; /* space granted for MDS */
290 __u32 os_spare3; /* Unused padding fields. Remember */
291 __u32 os_spare4; /* to fix lustre_swab_obd_statfs() */
299 /** additional filesystem attributes for target device */
300 struct obd_statfs_info {
301 __u32 os_reserved_mb_low; /* reserved mb low */
302 __u32 os_reserved_mb_high; /* reserved mb high */
303 bool os_enable_pre; /* enable pre create logic */
309 * FID is a cluster-wide unique identifier of a file or an object (stripe).
310 * FIDs are never reused.
314 * FID sequence. Sequence is a unit of migration: all files (objects)
315 * with FIDs from a given sequence are stored on the same server.
316 * Lustre should support 2^64 objects, so even if each sequence
317 * has only a single object we can still enumerate 2^64 objects.
320 /* FID number within sequence. */
323 * FID version, used to distinguish different versions (in the sense
324 * of snapshots, etc.) of the same file system object. Not currently
330 static inline bool fid_is_zero(const struct lu_fid *fid)
332 return fid->f_seq == 0 && fid->f_oid == 0;
335 /* The data name_to_handle_at() places in a struct file_handle (at f_handle) */
336 struct lustre_file_handle {
337 struct lu_fid lfh_child;
338 struct lu_fid lfh_parent;
341 /* Currently, the filter_fid::ff_parent::f_ver is not the real parent
342 * MDT-object's FID::f_ver, instead it is the OST-object index in its
343 * parent MDT-object's layout EA. */
344 #define f_stripe_idx f_ver
347 __u32 ol_stripe_size;
348 __u32 ol_stripe_count;
352 } __attribute__((packed));
354 /* The filter_fid structure has changed several times over its lifetime.
355 * For a long time "trusted.fid" held the MDT inode parent FID/IGIF and
356 * stripe_index and the "self FID" (objid/seq) to be able to recover the
357 * OST objects in case of corruption. With the move to 2.4 and OSD-API for
358 * the OST, the "trusted.lma" xattr was added to the OST objects to store
359 * the "self FID" to be consistent with the MDT on-disk format, and the
360 * filter_fid only stored the MDT inode parent FID and stripe index.
362 * In 2.10, the addition of PFL composite layouts required more information
363 * to be stored into the filter_fid in order to be able to identify which
364 * component the OST object belonged. As well, the stripe size may vary
365 * between components, so it was no longer safe to assume the stripe size
366 * or stripe_count of a file. This is also more robust for plain layouts.
368 * For ldiskfs OSTs that were formatted with 256-byte inodes, there is not
369 * enough space to store both the filter_fid and LMA in the inode, so they
370 * are packed into struct lustre_ost_attrs on disk in trusted.lma to avoid
371 * an extra seek for every OST object access.
373 * In 2.11, FLR mirror layouts also need to store the layout version and
374 * range so that writes to old versions of the layout are not allowed.
375 * That ensures that mirrored objects are not modified by evicted clients,
376 * and ensures that the components are correctly marked stale on the MDT.
378 struct filter_fid_18_23 {
379 struct lu_fid ff_parent; /* stripe_idx in f_ver */
384 struct filter_fid_24_29 {
385 struct lu_fid ff_parent; /* stripe_idx in f_ver */
388 struct filter_fid_210 {
389 struct lu_fid ff_parent; /* stripe_idx in f_ver */
390 struct ost_layout ff_layout;
394 struct lu_fid ff_parent; /* stripe_idx in f_ver */
395 struct ost_layout ff_layout;
396 __u32 ff_layout_version;
397 __u32 ff_range; /* range of layout version that
398 * write are allowed */
399 } __attribute__((packed));
401 /* Userspace should treat lu_fid as opaque, and only use the following methods
402 * to print or parse them. Other functions (e.g. compare, swab) could be moved
403 * here from lustre_idl.h if needed. */
407 LMAC_HSM = 0x00000001,
408 /* LMAC_SOM = 0x00000002, obsolete since 2.8.0 */
409 LMAC_NOT_IN_OI = 0x00000004, /* the object does NOT need OI mapping */
410 LMAC_FID_ON_OST = 0x00000008, /* For OST-object, its OI mapping is
411 * under /O/<seq>/d<x>. */
412 LMAC_STRIPE_INFO = 0x00000010, /* stripe info in the LMA EA. */
413 LMAC_COMP_INFO = 0x00000020, /* Component info in the LMA EA. */
414 LMAC_IDX_BACKUP = 0x00000040, /* Has index backup. */
418 * Masks for all features that should be supported by a Lustre version to
419 * access a specific file.
420 * This information is stored in lustre_mdt_attrs::lma_incompat.
423 LMAI_RELEASED = 0x00000001, /* file is released */
424 LMAI_AGENT = 0x00000002, /* agent inode */
425 LMAI_REMOTE_PARENT = 0x00000004, /* the parent of the object
426 is on the remote MDT */
427 LMAI_STRIPED = 0x00000008, /* striped directory inode */
428 LMAI_ORPHAN = 0x00000010, /* inode is orphan */
429 LMA_INCOMPAT_SUPP = (LMAI_AGENT | LMAI_REMOTE_PARENT | \
430 LMAI_STRIPED | LMAI_ORPHAN)
435 * Following struct for object attributes, that will be kept inode's EA.
436 * Introduced in 2.0 release (please see b15993, for details)
437 * Added to all objects since Lustre 2.4 as contains self FID
439 struct lustre_mdt_attrs {
441 * Bitfield for supported data in this structure. From enum lma_compat.
442 * lma_self_fid and lma_flags are always available.
446 * Per-file incompat feature list. Lustre version should support all
447 * flags set in this field. The supported feature mask is available in
451 /** FID of this inode */
452 struct lu_fid lma_self_fid;
455 struct lustre_ost_attrs {
456 /* Use lustre_mdt_attrs directly for now, need a common header
457 * structure if want to change lustre_mdt_attrs in future. */
458 struct lustre_mdt_attrs loa_lma;
460 /* Below five elements are for OST-object's PFID EA, the
461 * lma_parent_fid::f_ver is composed of the stripe_count (high 16 bits)
462 * and the stripe_index (low 16 bits), the size should not exceed
463 * 5 * sizeof(__u64)) to be accessable by old Lustre. If the flag
464 * LMAC_STRIPE_INFO is set, then loa_parent_fid and loa_stripe_size
465 * are valid; if the flag LMAC_COMP_INFO is set, then the next three
466 * loa_comp_* elements are valid. */
467 struct lu_fid loa_parent_fid;
468 __u32 loa_stripe_size;
470 __u64 loa_comp_start;
475 * Prior to 2.4, the LMA structure also included SOM attributes which has since
476 * been moved to a dedicated xattr
477 * lma_flags was also removed because of lma_compat/incompat fields.
479 #define LMA_OLD_SIZE (sizeof(struct lustre_mdt_attrs) + 5 * sizeof(__u64))
481 enum lustre_som_flags {
482 /* Unknow or no SoM data, must get size from OSTs. */
483 SOM_FL_UNKNOWN = 0x0000,
484 /* Known strictly correct, FLR or DoM file (SoM guaranteed). */
485 SOM_FL_STRICT = 0x0001,
486 /* Known stale - was right at some point in the past, but it is
487 * known (or likely) to be incorrect now (e.g. opened for write). */
488 SOM_FL_STALE = 0x0002,
489 /* Approximate, may never have been strictly correct,
490 * need to sync SOM data to achieve eventual consistency. */
491 SOM_FL_LAZY = 0x0004,
494 struct lustre_som_attrs {
496 __u16 lsa_reserved[3];
502 * OST object IDentifier.
510 struct lu_fid oi_fid;
514 #define DOSTID "%#llx:%llu"
515 #define POSTID(oi) ((unsigned long long)ostid_seq(oi)), \
516 ((unsigned long long)ostid_id(oi))
518 struct ll_futimes_3 {
520 __u64 lfu_atime_nsec;
522 __u64 lfu_mtime_nsec;
524 __u64 lfu_ctime_nsec;
528 * Maximum number of mirrors currently implemented.
530 #define LUSTRE_MIRROR_COUNT_MAX 16
532 /* Lease types for use as arg and return of LL_IOC_{GET,SET}_LEASE ioctl. */
534 LL_LEASE_RDLCK = 0x01,
535 LL_LEASE_WRLCK = 0x02,
536 LL_LEASE_UNLCK = 0x04,
539 enum ll_lease_flags {
540 LL_LEASE_RESYNC = 0x1,
541 LL_LEASE_RESYNC_DONE = 0x2,
542 LL_LEASE_LAYOUT_MERGE = 0x4,
543 LL_LEASE_LAYOUT_SPLIT = 0x8,
544 LL_LEASE_PCC_ATTACH = 0x10,
547 #define IOC_IDS_MAX 4096
548 struct ll_ioc_lease {
555 struct ll_ioc_lease_id {
566 * The ioctl naming rules:
567 * LL_* - works on the currently opened filehandle instead of parent dir
568 * *_OBD_* - gets data for both OSC or MDC (LOV, LMV indirectly)
569 * *_MDC_* - gets/sets data related to MDC
570 * *_LOV_* - gets/sets data related to OSC/LOV
571 * *FILE* - called on parent dir and passes in a filename
572 * *STRIPE* - set/get lov_user_md
573 * *INFO - set/get lov_user_mds_data
575 /* lustre_ioctl.h 101-150 */
576 #define LL_IOC_GETFLAGS _IOR ('f', 151, long)
577 #define LL_IOC_SETFLAGS _IOW ('f', 152, long)
578 #define LL_IOC_CLRFLAGS _IOW ('f', 153, long)
579 #define LL_IOC_LOV_SETSTRIPE _IOW ('f', 154, long)
580 #define LL_IOC_LOV_SETSTRIPE_NEW _IOWR('f', 154, struct lov_user_md)
581 #define LL_IOC_LOV_GETSTRIPE _IOW ('f', 155, long)
582 #define LL_IOC_LOV_GETSTRIPE_NEW _IOR('f', 155, struct lov_user_md)
583 #define LL_IOC_LOV_SETEA _IOW ('f', 156, long)
584 /* LL_IOC_RECREATE_OBJ 157 obsolete */
585 /* LL_IOC_RECREATE_FID 157 obsolete */
586 #define LL_IOC_GROUP_LOCK _IOW ('f', 158, long)
587 #define LL_IOC_GROUP_UNLOCK _IOW ('f', 159, long)
588 /* LL_IOC_QUOTACHECK 160 OBD_IOC_QUOTACHECK */
589 /* LL_IOC_POLL_QUOTACHECK 161 OBD_IOC_POLL_QUOTACHECK */
590 /* LL_IOC_QUOTACTL 162 OBD_IOC_QUOTACTL */
591 #define IOC_OBD_STATFS _IOWR('f', 164, struct obd_statfs *)
592 /* IOC_LOV_GETINFO 165 obsolete */
593 #define LL_IOC_FLUSHCTX _IOW ('f', 166, long)
594 /* LL_IOC_RMTACL 167 obsolete */
595 #define LL_IOC_GETOBDCOUNT _IOR ('f', 168, long)
596 #define LL_IOC_LLOOP_ATTACH _IOWR('f', 169, long)
597 #define LL_IOC_LLOOP_DETACH _IOWR('f', 170, long)
598 #define LL_IOC_LLOOP_INFO _IOWR('f', 171, struct lu_fid)
599 #define LL_IOC_LLOOP_DETACH_BYDEV _IOWR('f', 172, long)
600 #define LL_IOC_PATH2FID _IOR ('f', 173, long)
601 #define LL_IOC_GET_CONNECT_FLAGS _IOWR('f', 174, __u64 *)
602 #define LL_IOC_GET_MDTIDX _IOR ('f', 175, int)
603 #define LL_IOC_FUTIMES_3 _IOWR('f', 176, struct ll_futimes_3)
604 #define LL_IOC_FLR_SET_MIRROR _IOW ('f', 177, long)
605 /* lustre_ioctl.h 177-210 */
606 #define LL_IOC_HSM_STATE_GET _IOR('f', 211, struct hsm_user_state)
607 #define LL_IOC_HSM_STATE_SET _IOW('f', 212, struct hsm_state_set)
608 #define LL_IOC_HSM_CT_START _IOW('f', 213, struct lustre_kernelcomm)
609 #define LL_IOC_HSM_COPY_START _IOW('f', 214, struct hsm_copy *)
610 #define LL_IOC_HSM_COPY_END _IOW('f', 215, struct hsm_copy *)
611 #define LL_IOC_HSM_PROGRESS _IOW('f', 216, struct hsm_user_request)
612 #define LL_IOC_HSM_REQUEST _IOW('f', 217, struct hsm_user_request)
613 #define LL_IOC_DATA_VERSION _IOR('f', 218, struct ioc_data_version)
614 #define LL_IOC_LOV_SWAP_LAYOUTS _IOW('f', 219, \
615 struct lustre_swap_layouts)
616 #define LL_IOC_HSM_ACTION _IOR('f', 220, \
617 struct hsm_current_action)
618 /* lustre_ioctl.h 221-232 */
619 #define LL_IOC_LMV_SETSTRIPE _IOWR('f', 240, struct lmv_user_md)
620 #define LL_IOC_LMV_GETSTRIPE _IOWR('f', 241, struct lmv_user_md)
621 #define LL_IOC_REMOVE_ENTRY _IOWR('f', 242, __u64)
622 #define LL_IOC_RMFID _IOR('f', 242, struct fid_array)
623 #define LL_IOC_SET_LEASE _IOWR('f', 243, struct ll_ioc_lease)
624 #define LL_IOC_SET_LEASE_OLD _IOWR('f', 243, long)
625 #define LL_IOC_GET_LEASE _IO('f', 244)
626 #define LL_IOC_HSM_IMPORT _IOWR('f', 245, struct hsm_user_import)
627 #define LL_IOC_LMV_SET_DEFAULT_STRIPE _IOWR('f', 246, struct lmv_user_md)
628 #define LL_IOC_MIGRATE _IOR('f', 247, int)
629 #define LL_IOC_FID2MDTIDX _IOWR('f', 248, struct lu_fid)
630 #define LL_IOC_GETPARENT _IOWR('f', 249, struct getparent)
631 #define LL_IOC_LADVISE _IOR('f', 250, struct llapi_lu_ladvise)
632 #define LL_IOC_HEAT_GET _IOWR('f', 251, struct lu_heat)
633 #define LL_IOC_HEAT_SET _IOW('f', 251, __u64)
634 #define LL_IOC_PCC_DETACH _IOW('f', 252, struct lu_pcc_detach)
635 #define LL_IOC_PCC_DETACH_BY_FID _IOW('f', 252, struct lu_pcc_detach_fid)
636 #define LL_IOC_PCC_STATE _IOR('f', 252, struct lu_pcc_state)
638 #ifndef FS_IOC_FSGETXATTR
640 * Structure for FS_IOC_FSGETXATTR and FS_IOC_FSSETXATTR.
643 __u32 fsx_xflags; /* xflags field value (get/set) */
644 __u32 fsx_extsize; /* extsize field value (get/set)*/
645 __u32 fsx_nextents; /* nextents field value (get) */
646 __u32 fsx_projid; /* project identifier (get/set) */
647 unsigned char fsx_pad[12];
649 #define FS_IOC_FSGETXATTR _IOR('X', 31, struct fsxattr)
650 #define FS_IOC_FSSETXATTR _IOW('X', 32, struct fsxattr)
652 #define LL_IOC_FSGETXATTR FS_IOC_FSGETXATTR
653 #define LL_IOC_FSSETXATTR FS_IOC_FSSETXATTR
654 #ifndef FS_XFLAG_PROJINHERIT
655 #define FS_XFLAG_PROJINHERIT 0x00000200
659 #define LL_STATFS_LMV 1
660 #define LL_STATFS_LOV 2
661 #define LL_STATFS_NODELAY 4
663 #define IOC_MDC_TYPE 'i'
664 #define IOC_MDC_LOOKUP _IOWR(IOC_MDC_TYPE, 20, struct obd_device *)
665 #define IOC_MDC_GETFILESTRIPE _IOWR(IOC_MDC_TYPE, 21, struct lov_user_md *)
666 #ifdef HAVE_LOV_USER_MDS_DATA
667 #define IOC_MDC_GETFILEINFO_OLD _IOWR(IOC_MDC_TYPE, 22, struct lov_user_mds_data_v1 *)
668 #define IOC_MDC_GETFILEINFO _IOWR(IOC_MDC_TYPE, 22, struct lov_user_mds_data)
669 #define LL_IOC_MDC_GETINFO_OLD _IOWR(IOC_MDC_TYPE, 23, struct lov_user_mds_data_v1 *)
670 #define LL_IOC_MDC_GETINFO _IOWR(IOC_MDC_TYPE, 23, struct lov_user_mds_data)
673 #define MAX_OBD_NAME 128 /* If this changes, a NEW ioctl must be added */
675 /* Define O_LOV_DELAY_CREATE to be a mask that is not useful for regular
676 * files, but are unlikely to be used in practice and are not harmful if
677 * used incorrectly. O_NOCTTY and FASYNC are only meaningful for character
678 * devices and are safe for use on new files. See LU-4209. */
679 /* To be compatible with old statically linked binary we keep the check for
680 * the older 0100000000 flag. This is already removed upstream. LU-812. */
681 #define O_LOV_DELAY_CREATE_1_8 0100000000 /* FMODE_NONOTIFY masked in 2.6.36 */
683 #define FASYNC 00020000 /* fcntl, for BSD compatibility */
685 #define O_LOV_DELAY_CREATE_MASK (O_NOCTTY | FASYNC)
686 #define O_LOV_DELAY_CREATE (O_LOV_DELAY_CREATE_1_8 | \
687 O_LOV_DELAY_CREATE_MASK)
689 #define LL_FILE_IGNORE_LOCK 0x00000001
690 #define LL_FILE_GROUP_LOCKED 0x00000002
691 #define LL_FILE_READAHEA 0x00000004
692 #define LL_FILE_LOCKED_DIRECTIO 0x00000008 /* client-side locks with dio */
693 #define LL_FILE_LOCKLESS_IO 0x00000010 /* server-side locks with cio */
694 #define LL_FILE_FLOCK_WARNING 0x00000020 /* warned about disabled flock */
696 #define LOV_USER_MAGIC_V1 0x0BD10BD0
697 #define LOV_USER_MAGIC LOV_USER_MAGIC_V1
698 #define LOV_USER_MAGIC_JOIN_V1 0x0BD20BD0
699 #define LOV_USER_MAGIC_V3 0x0BD30BD0
700 /* 0x0BD40BD0 is occupied by LOV_MAGIC_MIGRATE */
701 #define LOV_USER_MAGIC_SPECIFIC 0x0BD50BD0 /* for specific OSTs */
702 #define LOV_USER_MAGIC_COMP_V1 0x0BD60BD0
703 #define LOV_USER_MAGIC_FOREIGN 0x0BD70BD0
704 #define LOV_USER_MAGIC_SEL 0x0BD80BD0
706 #define LMV_USER_MAGIC 0x0CD30CD0 /* default lmv magic */
707 #define LMV_USER_MAGIC_V0 0x0CD20CD0 /* old default lmv magic*/
708 #define LMV_USER_MAGIC_SPECIFIC 0x0CD40CD0
710 #define LOV_PATTERN_NONE 0x000
711 #define LOV_PATTERN_RAID0 0x001
712 #define LOV_PATTERN_RAID1 0x002
713 #define LOV_PATTERN_MDT 0x100
714 #define LOV_PATTERN_OVERSTRIPING 0x200
716 #define LOV_PATTERN_F_MASK 0xffff0000
717 #define LOV_PATTERN_F_HOLE 0x40000000 /* there is hole in LOV EA */
718 #define LOV_PATTERN_F_RELEASED 0x80000000 /* HSM released file */
719 #define LOV_PATTERN_DEFAULT 0xffffffff
721 #define LOV_OFFSET_DEFAULT ((__u16)-1)
722 #define LMV_OFFSET_DEFAULT ((__u32)-1)
724 static inline bool lov_pattern_supported(__u32 pattern)
726 return (pattern & ~LOV_PATTERN_F_RELEASED) == LOV_PATTERN_RAID0 ||
727 (pattern & ~LOV_PATTERN_F_RELEASED) ==
728 (LOV_PATTERN_RAID0 | LOV_PATTERN_OVERSTRIPING) ||
729 (pattern & ~LOV_PATTERN_F_RELEASED) == LOV_PATTERN_MDT;
732 /* RELEASED and MDT patterns are not valid in many places, so rather than
733 * having many extra checks on lov_pattern_supported, we have this separate
734 * check for non-released, non-DOM components
736 static inline bool lov_pattern_supported_normal_comp(__u32 pattern)
738 return pattern == LOV_PATTERN_RAID0 ||
739 pattern == (LOV_PATTERN_RAID0 | LOV_PATTERN_OVERSTRIPING);
743 #define LOV_MAXPOOLNAME 15
744 #define LOV_POOLNAMEF "%.15s"
746 #define LOV_MIN_STRIPE_BITS 16 /* maximum PAGE_SIZE (ia64), power of 2 */
747 #define LOV_MIN_STRIPE_SIZE (1 << LOV_MIN_STRIPE_BITS)
748 #define LOV_MAX_STRIPE_COUNT_OLD 160
749 /* This calculation is crafted so that input of 4096 will result in 160
750 * which in turn is equal to old maximal stripe count.
751 * XXX: In fact this is too simpified for now, what it also need is to get
752 * ea_type argument to clearly know how much space each stripe consumes.
754 * The limit of 12 pages is somewhat arbitrary, but is a reasonably large
755 * allocation that is sufficient for the current generation of systems.
757 * (max buffer size - lov+rpc header) / sizeof(struct lov_ost_data_v1) */
758 #define LOV_MAX_STRIPE_COUNT 2000 /* ~((12 * 4096 - 256) / 24) */
759 #define LOV_ALL_STRIPES 0xffff /* only valid for directories */
760 #define LOV_V1_INSANE_STRIPE_COUNT 65532 /* maximum stripe count bz13933 */
762 #define XATTR_LUSTRE_PREFIX "lustre."
763 #define XATTR_LUSTRE_LOV XATTR_LUSTRE_PREFIX"lov"
765 /* Please update if XATTR_LUSTRE_LOV".set" groks more flags in the future */
766 #define allowed_lustre_lov(att) (strcmp((att), XATTR_LUSTRE_LOV".add") == 0 || \
767 strcmp((att), XATTR_LUSTRE_LOV".set") == 0 || \
768 strcmp((att), XATTR_LUSTRE_LOV".set.flags") == 0 || \
769 strcmp((att), XATTR_LUSTRE_LOV".del") == 0)
771 #define lov_user_ost_data lov_user_ost_data_v1
772 struct lov_user_ost_data_v1 { /* per-stripe data structure */
773 struct ost_id l_ost_oi; /* OST object ID */
774 __u32 l_ost_gen; /* generation of this OST index */
775 __u32 l_ost_idx; /* OST index in LOV */
776 } __attribute__((packed));
778 #define lov_user_md lov_user_md_v1
779 struct lov_user_md_v1 { /* LOV EA user data (host-endian) */
780 __u32 lmm_magic; /* magic number = LOV_USER_MAGIC_V1 */
781 __u32 lmm_pattern; /* LOV_PATTERN_RAID0, LOV_PATTERN_RAID1 */
782 struct ost_id lmm_oi; /* MDT parent inode id/seq (id/0 for 1.x) */
783 __u32 lmm_stripe_size; /* size of stripe in bytes */
784 __u16 lmm_stripe_count; /* num stripes in use for this object */
786 __u16 lmm_stripe_offset; /* starting stripe offset in
787 * lmm_objects, use when writing */
788 __u16 lmm_layout_gen; /* layout generation number
789 * used when reading */
791 struct lov_user_ost_data_v1 lmm_objects[0]; /* per-stripe data */
792 } __attribute__((packed, __may_alias__));
794 struct lov_user_md_v3 { /* LOV EA user data (host-endian) */
795 __u32 lmm_magic; /* magic number = LOV_USER_MAGIC_V3 */
796 __u32 lmm_pattern; /* LOV_PATTERN_RAID0, LOV_PATTERN_RAID1 */
797 struct ost_id lmm_oi; /* MDT parent inode id/seq (id/0 for 1.x) */
798 __u32 lmm_stripe_size; /* size of stripe in bytes */
799 __u16 lmm_stripe_count; /* num stripes in use for this object */
801 __u16 lmm_stripe_offset; /* starting stripe offset in
802 * lmm_objects, use when writing */
803 __u16 lmm_layout_gen; /* layout generation number
804 * used when reading */
806 char lmm_pool_name[LOV_MAXPOOLNAME + 1]; /* pool name */
807 struct lov_user_ost_data_v1 lmm_objects[0]; /* per-stripe data */
808 } __attribute__((packed));
810 struct lov_foreign_md {
811 __u32 lfm_magic; /* magic number = LOV_MAGIC_FOREIGN */
812 __u32 lfm_length; /* length of lfm_value */
813 __u32 lfm_type; /* type, see LU_FOREIGN_TYPE_ */
814 __u32 lfm_flags; /* flags, type specific */
818 #define foreign_size(lfm) (((struct lov_foreign_md *)lfm)->lfm_length + \
819 offsetof(struct lov_foreign_md, lfm_value))
821 #define foreign_size_le(lfm) \
822 (le32_to_cpu(((struct lov_foreign_md *)lfm)->lfm_length) + \
823 offsetof(struct lov_foreign_md, lfm_value))
826 * The stripe size fields are shared for the extension size storage, however
827 * the extension size is stored in KB, not bytes.
829 #define SEL_UNIT_SIZE 1024llu
836 #define DEXT "[%#llx, %#llx)"
837 #define PEXT(ext) (unsigned long long)(ext)->e_start, (unsigned long long)(ext)->e_end
839 static inline bool lu_extent_is_overlapped(struct lu_extent *e1,
840 struct lu_extent *e2)
842 return e1->e_start < e2->e_end && e2->e_start < e1->e_end;
845 static inline bool lu_extent_is_whole(struct lu_extent *e)
847 return e->e_start == 0 && e->e_end == LUSTRE_EOF;
850 enum lov_comp_md_entry_flags {
851 LCME_FL_STALE = 0x00000001, /* FLR: stale data */
852 LCME_FL_PREF_RD = 0x00000002, /* FLR: preferred for reading */
853 LCME_FL_PREF_WR = 0x00000004, /* FLR: preferred for writing */
854 LCME_FL_PREF_RW = LCME_FL_PREF_RD | LCME_FL_PREF_WR,
855 LCME_FL_OFFLINE = 0x00000008, /* Not used */
856 LCME_FL_INIT = 0x00000010, /* instantiated */
857 LCME_FL_NOSYNC = 0x00000020, /* FLR: no sync for the mirror */
858 LCME_FL_EXTENSION = 0x00000040, /* extension comp, never init */
859 LCME_FL_NEG = 0x80000000 /* used to indicate a negative flag,
860 * won't be stored on disk
864 #define LCME_KNOWN_FLAGS (LCME_FL_NEG | LCME_FL_INIT | LCME_FL_STALE | \
865 LCME_FL_PREF_RW | LCME_FL_NOSYNC | \
868 /* The component flags can be set by users at creation/modification time. */
869 #define LCME_USER_COMP_FLAGS (LCME_FL_PREF_RW | LCME_FL_NOSYNC | \
872 /* The mirror flags can be set by users at creation time. */
873 #define LCME_USER_MIRROR_FLAGS (LCME_FL_PREF_RW)
875 /* The allowed flags obtained from the client at component creation time. */
876 #define LCME_CL_COMP_FLAGS (LCME_USER_MIRROR_FLAGS | LCME_FL_EXTENSION)
878 /* The mirror flags sent by client */
879 #define LCME_MIRROR_FLAGS (LCME_FL_NOSYNC)
881 /* These flags have meaning when set in a default layout and will be inherited
882 * from the default/template layout set on a directory.
884 #define LCME_TEMPLATE_FLAGS (LCME_FL_PREF_RW | LCME_FL_NOSYNC | \
887 /* the highest bit in obdo::o_layout_version is used to mark if the file is
889 #define LU_LAYOUT_RESYNC LCME_FL_NEG
891 /* lcme_id can be specified as certain flags, and the the first
892 * bit of lcme_id is used to indicate that the ID is representing
893 * certain LCME_FL_* but not a real ID. Which implies we can have
894 * at most 31 flags (see LCME_FL_XXX). */
897 LCME_ID_MAX = 0x7FFFFFFF,
898 LCME_ID_ALL = 0xFFFFFFFF,
899 LCME_ID_NOT_ID = LCME_FL_NEG
902 #define LCME_ID_MASK LCME_ID_MAX
904 struct lov_comp_md_entry_v1 {
905 __u32 lcme_id; /* unique id of component */
906 __u32 lcme_flags; /* LCME_FL_XXX */
907 struct lu_extent lcme_extent; /* file extent for component */
908 __u32 lcme_offset; /* offset of component blob,
909 start from lov_comp_md_v1 */
910 __u32 lcme_size; /* size of component blob */
911 __u32 lcme_layout_gen;
912 __u64 lcme_timestamp; /* snapshot time if applicable*/
913 __u32 lcme_padding_1;
914 } __attribute__((packed));
916 #define SEQ_ID_MAX 0x0000FFFF
917 #define SEQ_ID_MASK SEQ_ID_MAX
918 /* bit 30:16 of lcme_id is used to store mirror id */
919 #define MIRROR_ID_MASK 0x7FFF0000
920 #define MIRROR_ID_NEG 0x8000
921 #define MIRROR_ID_SHIFT 16
923 static inline __u32 pflr_id(__u16 mirror_id, __u16 seqid)
925 return ((mirror_id << MIRROR_ID_SHIFT) & MIRROR_ID_MASK) | seqid;
928 static inline __u16 mirror_id_of(__u32 id)
930 return (id & MIRROR_ID_MASK) >> MIRROR_ID_SHIFT;
934 * on-disk data for lcm_flags. Valid if lcm_magic is LOV_MAGIC_COMP_V1.
936 enum lov_comp_md_flags {
937 /* the least 2 bits are used by FLR to record file state */
940 LCM_FL_WRITE_PENDING = 2,
941 LCM_FL_SYNC_PENDING = 3,
942 LCM_FL_FLR_MASK = 0x3,
945 struct lov_comp_md_v1 {
946 __u32 lcm_magic; /* LOV_USER_MAGIC_COMP_V1 */
947 __u32 lcm_size; /* overall size including this struct */
948 __u32 lcm_layout_gen;
950 __u16 lcm_entry_count;
951 /* lcm_mirror_count stores the number of actual mirrors minus 1,
952 * so that non-flr files will have value 0 meaning 1 mirror. */
953 __u16 lcm_mirror_count;
954 __u16 lcm_padding1[3];
956 struct lov_comp_md_entry_v1 lcm_entries[0];
957 } __attribute__((packed));
959 static inline __u32 lov_user_md_size(__u16 stripes, __u32 lmm_magic)
961 if (stripes == (__u16)-1)
964 if (lmm_magic == LOV_USER_MAGIC_V1)
965 return sizeof(struct lov_user_md_v1) +
966 stripes * sizeof(struct lov_user_ost_data_v1);
967 return sizeof(struct lov_user_md_v3) +
968 stripes * sizeof(struct lov_user_ost_data_v1);
971 /* Compile with -D_LARGEFILE64_SOURCE or -D_GNU_SOURCE (or #define) to
972 * use this. It is unsafe to #define those values in this header as it
973 * is possible the application has already #included <sys/stat.h>. */
974 #ifdef HAVE_LOV_USER_MDS_DATA
975 #define lov_user_mds_data lov_user_mds_data_v2
976 struct lov_user_mds_data_v1 {
977 lstat_t lmd_st; /* MDS stat struct */
978 struct lov_user_md_v1 lmd_lmm; /* LOV EA V1 user data */
979 } __attribute__((packed));
981 struct lov_user_mds_data_v2 {
982 struct lu_fid lmd_fid; /* Lustre FID */
983 lstatx_t lmd_stx; /* MDS statx struct */
984 __u64 lmd_flags; /* MDS stat flags */
985 __u32 lmd_lmmsize; /* LOV EA size */
986 __u32 lmd_padding; /* unused */
987 struct lov_user_md_v1 lmd_lmm; /* LOV EA user data */
988 } __attribute__((packed));
991 struct lmv_user_mds_data {
992 struct lu_fid lum_fid;
998 LMV_HASH_TYPE_UNKNOWN = 0, /* 0 is reserved for testing purpose */
999 LMV_HASH_TYPE_ALL_CHARS = 1,
1000 LMV_HASH_TYPE_FNV_1A_64 = 2,
1004 #define LMV_HASH_TYPE_DEFAULT LMV_HASH_TYPE_FNV_1A_64
1006 #define LMV_HASH_NAME_ALL_CHARS "all_char"
1007 #define LMV_HASH_NAME_FNV_1A_64 "fnv_1a_64"
1009 /* not real hash type, but exposed to user as "space" hash type */
1010 #define LMV_HASH_NAME_SPACE "space"
1012 /* Right now only the lower part(0-16bits) of lmv_hash_type is being used,
1013 * and the higher part will be the flag to indicate the status of object,
1014 * for example the object is being migrated. And the hash function
1015 * might be interpreted differently with different flags. */
1016 #define LMV_HASH_TYPE_MASK 0x0000ffff
1018 static inline bool lmv_is_known_hash_type(__u32 type)
1020 return (type & LMV_HASH_TYPE_MASK) == LMV_HASH_TYPE_FNV_1A_64 ||
1021 (type & LMV_HASH_TYPE_MASK) == LMV_HASH_TYPE_ALL_CHARS;
1024 /* The striped directory has ever lost its master LMV EA, then LFSCK
1025 * re-generated it. This flag is used to indicate such case. It is an
1027 #define LMV_HASH_FLAG_LOST_LMV 0x10000000
1029 #define LMV_HASH_FLAG_BAD_TYPE 0x20000000
1030 #define LMV_HASH_FLAG_MIGRATION 0x80000000
1032 extern char *mdt_hash_name[LMV_HASH_TYPE_MAX];
1034 struct lustre_foreign_type {
1036 const char *lft_name;
1040 * LOV/LMV foreign types
1042 enum lustre_foreign_types {
1043 LU_FOREIGN_TYPE_NONE = 0,
1044 LU_FOREIGN_TYPE_DAOS = 0xda05,
1045 /* must be the max/last one */
1046 LU_FOREIGN_TYPE_UNKNOWN = 0xffffffff,
1049 extern struct lustre_foreign_type lu_foreign_types[];
1051 /* Got this according to how get LOV_MAX_STRIPE_COUNT, see above,
1052 * (max buffer size - lmv+rpc header) / sizeof(struct lmv_user_mds_data) */
1053 #define LMV_MAX_STRIPE_COUNT 2000 /* ((12 * 4096 - 256) / 24) */
1054 #define lmv_user_md lmv_user_md_v1
1055 struct lmv_user_md_v1 {
1056 __u32 lum_magic; /* must be the first field */
1057 __u32 lum_stripe_count; /* dirstripe count */
1058 __u32 lum_stripe_offset; /* MDT idx for default dirstripe */
1059 __u32 lum_hash_type; /* Dir stripe policy */
1060 __u32 lum_type; /* LMV type: default */
1064 char lum_pool_name[LOV_MAXPOOLNAME + 1];
1065 struct lmv_user_mds_data lum_objects[0];
1066 } __attribute__((packed));
1068 static inline __u32 lmv_foreign_to_md_stripes(__u32 size)
1070 if (size <= sizeof(struct lmv_user_md))
1073 size -= sizeof(struct lmv_user_md);
1074 return (size + sizeof(struct lmv_user_mds_data) - 1) /
1075 sizeof(struct lmv_user_mds_data);
1079 * NB, historically default layout didn't set type, but use XATTR name to differ
1080 * from normal layout, for backward compatibility, define LMV_TYPE_DEFAULT 0x0,
1081 * and still use the same method.
1084 LMV_TYPE_DEFAULT = 0x0000,
1087 static inline int lmv_user_md_size(int stripes, int lmm_magic)
1089 int size = sizeof(struct lmv_user_md);
1091 if (lmm_magic == LMV_USER_MAGIC_SPECIFIC)
1092 size += stripes * sizeof(struct lmv_user_mds_data);
1097 struct ll_recreate_obj {
1103 __u64 id; /* holds object id */
1104 __u32 generation; /* holds object generation */
1105 __u32 f_type; /* holds object type or stripe idx when passing it to
1106 * OST for saving into EA. */
1111 char uuid[UUID_MAX];
1114 static inline bool obd_uuid_equals(const struct obd_uuid *u1,
1115 const struct obd_uuid *u2)
1117 return strcmp((char *)u1->uuid, (char *)u2->uuid) == 0;
1120 static inline int obd_uuid_empty(struct obd_uuid *uuid)
1122 return uuid->uuid[0] == '\0';
1125 static inline void obd_str2uuid(struct obd_uuid *uuid, const char *tmp)
1127 strncpy((char *)uuid->uuid, tmp, sizeof(*uuid));
1128 uuid->uuid[sizeof(*uuid) - 1] = '\0';
1131 /* For printf's only, make sure uuid is terminated */
1132 static inline char *obd_uuid2str(const struct obd_uuid *uuid)
1137 if (uuid->uuid[sizeof(*uuid) - 1] != '\0') {
1138 /* Obviously not safe, but for printfs, no real harm done...
1139 we're always null-terminated, even in a race. */
1140 static char temp[sizeof(*uuid)];
1141 memcpy(temp, uuid->uuid, sizeof(*uuid) - 1);
1142 temp[sizeof(*uuid) - 1] = '\0';
1145 return (char *)(uuid->uuid);
1148 #define LUSTRE_MAXFSNAME 8
1150 /* Extract fsname from uuid (or target name) of a target
1151 e.g. (myfs-OST0007_UUID -> myfs)
1152 see also deuuidify. */
1153 static inline void obd_uuid2fsname(char *buf, char *uuid, int buflen)
1157 strncpy(buf, uuid, buflen - 1);
1158 buf[buflen - 1] = '\0';
1159 p = strrchr(buf, '-');
1164 /* printf display format for Lustre FIDs
1165 * usage: printf("file FID is "DFID"\n", PFID(fid)); */
1166 #define FID_NOBRACE_LEN 40
1167 #define FID_LEN (FID_NOBRACE_LEN + 2)
1168 #define DFID_NOBRACE "%#llx:0x%x:0x%x"
1169 #define DFID "[" DFID_NOBRACE "]"
1170 #define PFID(fid) (unsigned long long)(fid)->f_seq, (fid)->f_oid, (fid)->f_ver
1172 /* scanf input parse format for fids in DFID_NOBRACE format
1173 * Need to strip '[' from DFID format first or use "["SFID"]" at caller.
1174 * usage: sscanf(fidstr, SFID, RFID(&fid)); */
1175 #define SFID "0x%llx:0x%x:0x%x"
1176 #define RFID(fid) (unsigned long long *)&((fid)->f_seq), &((fid)->f_oid), &((fid)->f_ver)
1178 /********* Quotas **********/
1180 #define LUSTRE_QUOTABLOCK_BITS 10
1181 #define LUSTRE_QUOTABLOCK_SIZE (1 << LUSTRE_QUOTABLOCK_BITS)
1183 static inline __u64 lustre_stoqb(size_t space)
1185 return (space + LUSTRE_QUOTABLOCK_SIZE - 1) >> LUSTRE_QUOTABLOCK_BITS;
1188 #define Q_QUOTACHECK 0x800100 /* deprecated as of 2.4 */
1189 #define Q_INITQUOTA 0x800101 /* deprecated as of 2.4 */
1190 #define Q_GETOINFO 0x800102 /* get obd quota info */
1191 #define Q_GETOQUOTA 0x800103 /* get obd quotas */
1192 #define Q_FINVALIDATE 0x800104 /* deprecated as of 2.4 */
1194 /* these must be explicitly translated into linux Q_* in ll_dir_ioctl */
1195 #define LUSTRE_Q_QUOTAON 0x800002 /* deprecated as of 2.4 */
1196 #define LUSTRE_Q_QUOTAOFF 0x800003 /* deprecated as of 2.4 */
1197 #define LUSTRE_Q_GETINFO 0x800005 /* get information about quota files */
1198 #define LUSTRE_Q_SETINFO 0x800006 /* set information about quota files */
1199 #define LUSTRE_Q_GETQUOTA 0x800007 /* get user quota structure */
1200 #define LUSTRE_Q_SETQUOTA 0x800008 /* set user quota structure */
1201 /* lustre-specific control commands */
1202 #define LUSTRE_Q_INVALIDATE 0x80000b /* deprecated as of 2.4 */
1203 #define LUSTRE_Q_FINVALIDATE 0x80000c /* deprecated as of 2.4 */
1204 #define LUSTRE_Q_GETDEFAULT 0x80000d /* get default quota */
1205 #define LUSTRE_Q_SETDEFAULT 0x80000e /* set default quota */
1207 /* In the current Lustre implementation, the grace time is either the time
1208 * or the timestamp to be used after some quota ID exceeds the soft limt,
1209 * 48 bits should be enough, its high 16 bits can be used as quota flags.
1211 #define LQUOTA_GRACE_BITS 48
1212 #define LQUOTA_GRACE_MASK ((1ULL << LQUOTA_GRACE_BITS) - 1)
1213 #define LQUOTA_GRACE_MAX LQUOTA_GRACE_MASK
1214 #define LQUOTA_GRACE(t) (t & LQUOTA_GRACE_MASK)
1215 #define LQUOTA_FLAG(t) (t >> LQUOTA_GRACE_BITS)
1216 #define LQUOTA_GRACE_FLAG(t, f) ((__u64)t | (__u64)f << LQUOTA_GRACE_BITS)
1218 /* different quota flags */
1220 /* the default quota flag, the corresponding quota ID will use the default
1221 * quota setting, the hardlimit and softlimit of its quota record in the global
1222 * quota file will be set to 0, the low 48 bits of the grace will be set to 0
1223 * and high 16 bits will contain this flag (see above comment).
1225 #define LQUOTA_FLAG_DEFAULT 0x0001
1227 #define ALLQUOTA 255 /* set all quota */
1228 static inline const char *qtype_name(int qtype)
1241 #define IDENTITY_DOWNCALL_MAGIC 0x6d6dd629
1242 #define SEPOL_DOWNCALL_MAGIC 0x8b8bb842
1245 #define N_PERMS_MAX 64
1247 struct perm_downcall_data {
1253 struct identity_downcall_data {
1260 struct perm_downcall_data idd_perms[N_PERMS_MAX];
1261 __u32 idd_groups[0];
1264 struct sepol_downcall_data {
1266 time_t sdd_sepol_mtime;
1267 __u16 sdd_sepol_len;
1271 #ifdef NEED_QUOTA_DEFS
1273 #define QIF_BLIMITS 1
1275 #define QIF_ILIMITS 4
1276 #define QIF_INODES 8
1277 #define QIF_BTIME 16
1278 #define QIF_ITIME 32
1279 #define QIF_LIMITS (QIF_BLIMITS | QIF_ILIMITS)
1280 #define QIF_USAGE (QIF_SPACE | QIF_INODES)
1281 #define QIF_TIMES (QIF_BTIME | QIF_ITIME)
1282 #define QIF_ALL (QIF_LIMITS | QIF_USAGE | QIF_TIMES)
1285 #endif /* !__KERNEL__ */
1287 /* lustre volatile file support
1288 * file name header: ".^L^S^T^R:volatile"
1290 #define LUSTRE_VOLATILE_HDR ".\x0c\x13\x14\x12:VOLATILE"
1291 #define LUSTRE_VOLATILE_HDR_LEN 14
1293 enum lustre_quota_version {
1297 /* XXX: same as if_dqinfo struct in kernel */
1305 /* XXX: same as if_dqblk struct in kernel, plus one padding */
1307 __u64 dqb_bhardlimit;
1308 __u64 dqb_bsoftlimit;
1310 __u64 dqb_ihardlimit;
1311 __u64 dqb_isoftlimit;
1312 __u64 dqb_curinodes;
1326 struct if_quotactl {
1333 struct obd_dqinfo qc_dqinfo;
1334 struct obd_dqblk qc_dqblk;
1336 struct obd_uuid obd_uuid;
1339 /* swap layout flags */
1340 #define SWAP_LAYOUTS_CHECK_DV1 (1 << 0)
1341 #define SWAP_LAYOUTS_CHECK_DV2 (1 << 1)
1342 #define SWAP_LAYOUTS_KEEP_MTIME (1 << 2)
1343 #define SWAP_LAYOUTS_KEEP_ATIME (1 << 3)
1344 #define SWAP_LAYOUTS_CLOSE (1 << 4)
1346 /* Swap XATTR_NAME_HSM as well, only on the MDT so far */
1347 #define SWAP_LAYOUTS_MDS_HSM (1 << 31)
1348 struct lustre_swap_layouts {
1356 /** Bit-mask of valid attributes */
1357 /* The LA_* flags are written to disk as part of the ChangeLog records
1358 * so they are part of the on-disk and network protocol, and cannot be changed.
1359 * Only the first 12 bits are currently saved.
1362 LA_ATIME = 1 << 0, /* 0x00001 */
1363 LA_MTIME = 1 << 1, /* 0x00002 */
1364 LA_CTIME = 1 << 2, /* 0x00004 */
1365 LA_SIZE = 1 << 3, /* 0x00008 */
1366 LA_MODE = 1 << 4, /* 0x00010 */
1367 LA_UID = 1 << 5, /* 0x00020 */
1368 LA_GID = 1 << 6, /* 0x00040 */
1369 LA_BLOCKS = 1 << 7, /* 0x00080 */
1370 LA_TYPE = 1 << 8, /* 0x00100 */
1371 LA_FLAGS = 1 << 9, /* 0x00200 */
1372 LA_NLINK = 1 << 10, /* 0x00400 */
1373 LA_RDEV = 1 << 11, /* 0x00800 */
1374 LA_BLKSIZE = 1 << 12, /* 0x01000 */
1375 LA_KILL_SUID = 1 << 13, /* 0x02000 */
1376 LA_KILL_SGID = 1 << 14, /* 0x04000 */
1377 LA_PROJID = 1 << 15, /* 0x08000 */
1378 LA_LAYOUT_VERSION = 1 << 16, /* 0x10000 */
1379 LA_LSIZE = 1 << 17, /* 0x20000 */
1380 LA_LBLOCKS = 1 << 18, /* 0x40000 */
1382 * Attributes must be transmitted to OST objects
1384 LA_REMOTE_ATTR_SET = (LA_UID | LA_GID | LA_PROJID | LA_LAYOUT_VERSION)
1387 #define MDS_FMODE_READ 00000001
1388 #define MDS_FMODE_WRITE 00000002
1390 #define MDS_FMODE_CLOSED 00000000
1391 #define MDS_FMODE_EXEC 00000004
1392 /* MDS_FMODE_EPOCH 01000000 obsolete since 2.8.0 */
1393 /* MDS_FMODE_TRUNC 02000000 obsolete since 2.8.0 */
1394 /* MDS_FMODE_SOM 04000000 obsolete since 2.8.0 */
1396 #define MDS_OPEN_CREATED 00000010
1397 /* MDS_OPEN_CROSS 00000020 obsolete in 2.12, internal use only */
1399 #define MDS_OPEN_CREAT 00000100
1400 #define MDS_OPEN_EXCL 00000200
1401 #define MDS_OPEN_TRUNC 00001000
1402 #define MDS_OPEN_APPEND 00002000
1403 #define MDS_OPEN_SYNC 00010000
1404 #define MDS_OPEN_DIRECTORY 00200000
1406 #define MDS_OPEN_BY_FID 040000000 /* open_by_fid for known object */
1407 #define MDS_OPEN_DELAY_CREATE 0100000000 /* delay initial object create */
1408 #define MDS_OPEN_OWNEROVERRIDE 0200000000 /* NFSD rw-reopen ro file for owner */
1409 #define MDS_OPEN_JOIN_FILE 0400000000 /* open for join file.
1410 * We do not support JOIN FILE
1411 * anymore, reserve this flags
1412 * just for preventing such bit
1415 #define MDS_OPEN_LOCK 04000000000 /* This open requires open lock */
1416 #define MDS_OPEN_HAS_EA 010000000000 /* specify object create pattern */
1417 #define MDS_OPEN_HAS_OBJS 020000000000 /* Just set the EA the obj exist */
1418 #define MDS_OPEN_NORESTORE 0100000000000ULL /* Do not restore file at open */
1419 #define MDS_OPEN_NEWSTRIPE 0200000000000ULL /* New stripe needed (restripe or
1421 #define MDS_OPEN_VOLATILE 0400000000000ULL /* File is volatile = created
1423 #define MDS_OPEN_LEASE 01000000000000ULL /* Open the file and grant lease
1424 * delegation, succeed if it's not
1425 * being opened with conflict mode.
1427 #define MDS_OPEN_RELEASE 02000000000000ULL /* Open the file for HSM release */
1429 #define MDS_OPEN_RESYNC 04000000000000ULL /* FLR: file resync */
1430 #define MDS_OPEN_PCC 010000000000000ULL /* PCC: auto RW-PCC cache attach
1431 * for newly created file */
1433 /* lustre internal open flags, which should not be set from user space */
1434 #define MDS_OPEN_FL_INTERNAL (MDS_OPEN_HAS_EA | MDS_OPEN_HAS_OBJS | \
1435 MDS_OPEN_OWNEROVERRIDE | MDS_OPEN_LOCK | \
1436 MDS_OPEN_BY_FID | MDS_OPEN_LEASE | \
1437 MDS_OPEN_RELEASE | MDS_OPEN_RESYNC | \
1441 /********* Changelogs **********/
1442 /** Changelog record types */
1443 enum changelog_rec_type {
1446 CL_CREATE = 1, /* namespace */
1447 CL_MKDIR = 2, /* namespace */
1448 CL_HARDLINK = 3, /* namespace */
1449 CL_SOFTLINK = 4, /* namespace */
1450 CL_MKNOD = 5, /* namespace */
1451 CL_UNLINK = 6, /* namespace */
1452 CL_RMDIR = 7, /* namespace */
1453 CL_RENAME = 8, /* namespace */
1454 CL_EXT = 9, /* namespace extended record (2nd half of rename) */
1455 CL_OPEN = 10, /* not currently used */
1456 CL_CLOSE = 11, /* may be written to log only with mtime change */
1457 CL_LAYOUT = 12, /* file layout/striping modified */
1461 CL_XATTR = CL_SETXATTR, /* Deprecated name */
1462 CL_HSM = 16, /* HSM specific events, see flags */
1463 CL_MTIME = 17, /* Precedence: setattr > mtime > ctime > atime */
1467 CL_FLRW = 21, /* FLR: file was firstly written */
1468 CL_RESYNC = 22, /* FLR: file was resync-ed */
1470 CL_DN_OPEN = 24, /* denied open */
1474 static inline const char *changelog_type2str(int type) {
1475 static const char *changelog_str[] = {
1476 "MARK", "CREAT", "MKDIR", "HLINK", "SLINK", "MKNOD", "UNLNK",
1477 "RMDIR", "RENME", "RNMTO", "OPEN", "CLOSE", "LYOUT", "TRUNC",
1478 "SATTR", "XATTR", "HSM", "MTIME", "CTIME", "ATIME", "MIGRT",
1479 "FLRW", "RESYNC","GXATR", "NOPEN",
1482 if (type >= 0 && type < CL_LAST)
1483 return changelog_str[type];
1487 /* 12 bits of per-record data can be stored in the bottom of the flags */
1488 #define CLF_FLAGSHIFT 12
1489 enum changelog_rec_flags {
1490 CLF_VERSION = 0x1000,
1491 CLF_RENAME = 0x2000,
1493 CLF_EXTRA_FLAGS = 0x8000,
1494 CLF_SUPPORTED = CLF_VERSION | CLF_RENAME | CLF_JOBID |
1496 CLF_FLAGMASK = (1U << CLF_FLAGSHIFT) - 1,
1497 CLF_VERMASK = ~CLF_FLAGMASK,
1501 /* Anything under the flagmask may be per-type (if desired) */
1502 /* Flags for unlink */
1503 #define CLF_UNLINK_LAST 0x0001 /* Unlink of last hardlink */
1504 #define CLF_UNLINK_HSM_EXISTS 0x0002 /* File has something in HSM */
1505 /* HSM cleaning needed */
1506 /* Flags for rename */
1507 #define CLF_RENAME_LAST 0x0001 /* rename unlink last hardlink
1509 #define CLF_RENAME_LAST_EXISTS 0x0002 /* rename unlink last hardlink of target
1510 * has an archive in backend */
1513 /* 12b used (from high weight to low weight):
1518 #define CLF_HSM_ERR_L 0 /* HSM return code, 7 bits */
1519 #define CLF_HSM_ERR_H 6
1520 #define CLF_HSM_EVENT_L 7 /* HSM event, 3 bits, see enum hsm_event */
1521 #define CLF_HSM_EVENT_H 9
1522 #define CLF_HSM_FLAG_L 10 /* HSM flags, 2 bits, 1 used, 1 spare */
1523 #define CLF_HSM_FLAG_H 11
1524 #define CLF_HSM_SPARE_L 12 /* 4 spare bits */
1525 #define CLF_HSM_SPARE_H 15
1526 #define CLF_HSM_LAST 15
1528 /* Remove bits higher than _h, then extract the value
1529 * between _h and _l by shifting lower weigth to bit 0. */
1530 #define CLF_GET_BITS(_b, _h, _l) (((_b << (CLF_HSM_LAST - _h)) & 0xFFFF) \
1531 >> (CLF_HSM_LAST - _h + _l))
1533 #define CLF_HSM_SUCCESS 0x00
1534 #define CLF_HSM_MAXERROR 0x7E
1535 #define CLF_HSM_ERROVERFLOW 0x7F
1537 #define CLF_HSM_DIRTY 1 /* file is dirty after HSM request end */
1539 /* 3 bits field => 8 values allowed */
1551 static inline enum hsm_event hsm_get_cl_event(__u16 flags)
1553 return (enum hsm_event)CLF_GET_BITS(flags, CLF_HSM_EVENT_H,
1557 static inline void hsm_set_cl_event(enum changelog_rec_flags *clf_flags,
1560 *clf_flags = (enum changelog_rec_flags)
1561 (*clf_flags | (he << CLF_HSM_EVENT_L));
1564 static inline __u16 hsm_get_cl_flags(enum changelog_rec_flags clf_flags)
1566 return CLF_GET_BITS(clf_flags, CLF_HSM_FLAG_H, CLF_HSM_FLAG_L);
1569 static inline void hsm_set_cl_flags(enum changelog_rec_flags *clf_flags,
1572 *clf_flags = (enum changelog_rec_flags)
1573 (*clf_flags | (bits << CLF_HSM_FLAG_L));
1576 static inline int hsm_get_cl_error(enum changelog_rec_flags clf_flags)
1578 return CLF_GET_BITS(clf_flags, CLF_HSM_ERR_H, CLF_HSM_ERR_L);
1581 static inline void hsm_set_cl_error(enum changelog_rec_flags *clf_flags,
1584 *clf_flags = (enum changelog_rec_flags)
1585 (*clf_flags | (error << CLF_HSM_ERR_L));
1588 enum changelog_rec_extra_flags {
1590 CLFE_UIDGID = 0x0001,
1593 CLFE_XATTR = 0x0008,
1594 CLFE_SUPPORTED = CLFE_UIDGID | CLFE_NID | CLFE_OPEN | CLFE_XATTR
1597 enum changelog_send_flag {
1598 /* Not yet implemented */
1599 CHANGELOG_FLAG_FOLLOW = 0x01,
1600 /* Blocking IO makes sense in case of slow user parsing of the records,
1601 * but it also prevents us from cleaning up if the records are not
1603 CHANGELOG_FLAG_BLOCK = 0x02,
1604 /* Pack jobid into the changelog records if available. */
1605 CHANGELOG_FLAG_JOBID = 0x04,
1606 /* Pack additional flag bits into the changelog record */
1607 CHANGELOG_FLAG_EXTRA_FLAGS = 0x08,
1610 enum changelog_send_extra_flag {
1611 /* Pack uid/gid into the changelog record */
1612 CHANGELOG_EXTRA_FLAG_UIDGID = 0x01,
1613 /* Pack nid into the changelog record */
1614 CHANGELOG_EXTRA_FLAG_NID = 0x02,
1615 /* Pack open mode into the changelog record */
1616 CHANGELOG_EXTRA_FLAG_OMODE = 0x04,
1617 /* Pack xattr name into the changelog record */
1618 CHANGELOG_EXTRA_FLAG_XATTR = 0x08,
1621 #define CR_MAXSIZE __ALIGN_KERNEL(2 * NAME_MAX + 2 + \
1622 changelog_rec_offset(CLF_SUPPORTED, \
1625 /* 31 usable bytes string + null terminator. */
1626 #define LUSTRE_JOBID_SIZE 32
1628 /* This is the minimal changelog record. It can contain extensions
1629 * such as rename fields or process jobid. Its exact content is described
1630 * by the cr_flags and cr_extra_flags.
1632 * Extensions are packed in the same order as their corresponding flags,
1633 * then in the same order as their corresponding extra flags.
1635 struct changelog_rec {
1637 __u16 cr_flags; /**< \a changelog_rec_flags */
1638 __u32 cr_type; /**< \a changelog_rec_type */
1639 __u64 cr_index; /**< changelog record number */
1640 __u64 cr_prev; /**< last index for this target fid */
1643 struct lu_fid cr_tfid; /**< target fid */
1644 __u32 cr_markerflags; /**< CL_MARK flags */
1646 struct lu_fid cr_pfid; /**< parent fid */
1649 /* Changelog extension for RENAME. */
1650 struct changelog_ext_rename {
1651 struct lu_fid cr_sfid; /**< source fid, or zero */
1652 struct lu_fid cr_spfid; /**< source parent fid, or zero */
1655 /* Changelog extension to include JOBID. */
1656 struct changelog_ext_jobid {
1657 char cr_jobid[LUSTRE_JOBID_SIZE]; /**< zero-terminated string. */
1660 /* Changelog extension to include additional flags. */
1661 struct changelog_ext_extra_flags {
1662 __u64 cr_extra_flags; /* Additional CLFE_* flags */
1665 /* Changelog extra extension to include UID/GID. */
1666 struct changelog_ext_uidgid {
1671 /* Changelog extra extension to include NID. */
1672 struct changelog_ext_nid {
1673 /* have __u64 instead of lnet_nid_t type for use by client api */
1675 /* for use when IPv6 support is added */
1680 /* Changelog extra extension to include low 32 bits of MDS_OPEN_* flags. */
1681 struct changelog_ext_openmode {
1685 /* Changelog extra extension to include xattr */
1686 struct changelog_ext_xattr {
1687 char cr_xattr[XATTR_NAME_MAX + 1]; /**< zero-terminated string. */
1690 static inline struct changelog_ext_extra_flags *changelog_rec_extra_flags(
1691 const struct changelog_rec *rec);
1693 static inline size_t changelog_rec_offset(enum changelog_rec_flags crf,
1694 enum changelog_rec_extra_flags cref)
1696 size_t size = sizeof(struct changelog_rec);
1698 if (crf & CLF_RENAME)
1699 size += sizeof(struct changelog_ext_rename);
1701 if (crf & CLF_JOBID)
1702 size += sizeof(struct changelog_ext_jobid);
1704 if (crf & CLF_EXTRA_FLAGS) {
1705 size += sizeof(struct changelog_ext_extra_flags);
1706 if (cref & CLFE_UIDGID)
1707 size += sizeof(struct changelog_ext_uidgid);
1708 if (cref & CLFE_NID)
1709 size += sizeof(struct changelog_ext_nid);
1710 if (cref & CLFE_OPEN)
1711 size += sizeof(struct changelog_ext_openmode);
1712 if (cref & CLFE_XATTR)
1713 size += sizeof(struct changelog_ext_xattr);
1719 static inline size_t changelog_rec_size(const struct changelog_rec *rec)
1721 enum changelog_rec_extra_flags cref = CLFE_INVALID;
1723 if (rec->cr_flags & CLF_EXTRA_FLAGS)
1724 cref = (enum changelog_rec_extra_flags)
1725 changelog_rec_extra_flags(rec)->cr_extra_flags;
1727 return changelog_rec_offset(
1728 (enum changelog_rec_flags)rec->cr_flags, cref);
1731 static inline size_t changelog_rec_varsize(const struct changelog_rec *rec)
1733 return changelog_rec_size(rec) - sizeof(*rec) + rec->cr_namelen;
1737 struct changelog_ext_rename *changelog_rec_rename(const struct changelog_rec *rec)
1739 enum changelog_rec_flags crf = (enum changelog_rec_flags)
1740 (rec->cr_flags & CLF_VERSION);
1742 return (struct changelog_ext_rename *)((char *)rec +
1743 changelog_rec_offset(crf,
1747 /* The jobid follows the rename extension, if present */
1749 struct changelog_ext_jobid *changelog_rec_jobid(const struct changelog_rec *rec)
1751 enum changelog_rec_flags crf = (enum changelog_rec_flags)
1752 (rec->cr_flags & (CLF_VERSION | CLF_RENAME));
1754 return (struct changelog_ext_jobid *)((char *)rec +
1755 changelog_rec_offset(crf,
1759 /* The additional flags follow the rename and jobid extensions, if present */
1761 struct changelog_ext_extra_flags *changelog_rec_extra_flags(
1762 const struct changelog_rec *rec)
1764 enum changelog_rec_flags crf = (enum changelog_rec_flags)
1765 (rec->cr_flags & (CLF_VERSION | CLF_RENAME | CLF_JOBID));
1767 return (struct changelog_ext_extra_flags *)((char *)rec +
1768 changelog_rec_offset(crf,
1772 /* The uid/gid is the first extra extension */
1774 struct changelog_ext_uidgid *changelog_rec_uidgid(
1775 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));
1781 return (struct changelog_ext_uidgid *)((char *)rec +
1782 changelog_rec_offset(crf,
1786 /* The nid is the second extra extension */
1788 struct changelog_ext_nid *changelog_rec_nid(const struct changelog_rec *rec)
1790 enum changelog_rec_flags crf = (enum changelog_rec_flags)
1792 (CLF_VERSION | CLF_RENAME | CLF_JOBID | CLF_EXTRA_FLAGS));
1793 enum changelog_rec_extra_flags cref = CLFE_INVALID;
1795 if (rec->cr_flags & CLF_EXTRA_FLAGS)
1796 cref = (enum changelog_rec_extra_flags)
1797 (changelog_rec_extra_flags(rec)->cr_extra_flags &
1800 return (struct changelog_ext_nid *)((char *)rec +
1801 changelog_rec_offset(crf, cref));
1804 /* The OPEN mode is the third extra extension */
1806 struct changelog_ext_openmode *changelog_rec_openmode(
1807 const struct changelog_rec *rec)
1809 enum changelog_rec_flags crf = (enum changelog_rec_flags)
1811 (CLF_VERSION | CLF_RENAME | CLF_JOBID | CLF_EXTRA_FLAGS));
1812 enum changelog_rec_extra_flags cref = CLFE_INVALID;
1814 if (rec->cr_flags & CLF_EXTRA_FLAGS) {
1815 cref = (enum changelog_rec_extra_flags)
1816 (changelog_rec_extra_flags(rec)->cr_extra_flags &
1817 (CLFE_UIDGID | CLFE_NID));
1820 return (struct changelog_ext_openmode *)((char *)rec +
1821 changelog_rec_offset(crf, cref));
1824 /* The xattr name is the fourth extra extension */
1826 struct changelog_ext_xattr *changelog_rec_xattr(
1827 const struct changelog_rec *rec)
1829 enum changelog_rec_flags crf = (enum changelog_rec_flags)
1831 (CLF_VERSION | CLF_RENAME | CLF_JOBID | CLF_EXTRA_FLAGS));
1832 enum changelog_rec_extra_flags cref = CLFE_INVALID;
1834 if (rec->cr_flags & CLF_EXTRA_FLAGS)
1835 cref = (enum changelog_rec_extra_flags)
1836 (changelog_rec_extra_flags(rec)->cr_extra_flags &
1837 (CLFE_UIDGID | CLFE_NID | CLFE_OPEN));
1839 return (struct changelog_ext_xattr *)((char *)rec +
1840 changelog_rec_offset(crf, cref));
1843 /* The name follows the rename, jobid and extra flags extns, if present */
1844 static inline char *changelog_rec_name(const struct changelog_rec *rec)
1846 enum changelog_rec_extra_flags cref = CLFE_INVALID;
1848 if (rec->cr_flags & CLF_EXTRA_FLAGS)
1849 cref = (enum changelog_rec_extra_flags)
1850 changelog_rec_extra_flags(rec)->cr_extra_flags;
1852 return (char *)rec + changelog_rec_offset(
1853 (enum changelog_rec_flags)(rec->cr_flags & CLF_SUPPORTED),
1854 (enum changelog_rec_extra_flags)(cref & CLFE_SUPPORTED));
1857 static inline size_t changelog_rec_snamelen(const struct changelog_rec *rec)
1859 return rec->cr_namelen - strlen(changelog_rec_name(rec)) - 1;
1862 static inline char *changelog_rec_sname(const struct changelog_rec *rec)
1864 char *cr_name = changelog_rec_name(rec);
1866 return cr_name + strlen(cr_name) + 1;
1870 * Remap a record to the desired format as specified by the crf flags.
1871 * The record must be big enough to contain the final remapped version.
1872 * Superfluous extension fields are removed and missing ones are added
1873 * and zeroed. The flags of the record are updated accordingly.
1875 * The jobid and rename extensions can be added to a record, to match the
1876 * format an application expects, typically. In this case, the newly added
1877 * fields will be zeroed.
1878 * The Jobid field can be removed, to guarantee compatibility with older
1879 * clients that don't expect this field in the records they process.
1881 * The following assumptions are being made:
1882 * - CLF_RENAME will not be removed
1883 * - CLF_JOBID will not be added without CLF_RENAME being added too
1884 * - CLF_EXTRA_FLAGS will not be added without CLF_JOBID being added too
1886 * @param[in,out] rec The record to remap.
1887 * @param[in] crf_wanted Flags describing the desired extensions.
1888 * @param[in] cref_want Flags describing the desired extra extensions.
1890 static inline void changelog_remap_rec(struct changelog_rec *rec,
1891 enum changelog_rec_flags crf_wanted,
1892 enum changelog_rec_extra_flags cref_want)
1894 char *xattr_mov = NULL;
1895 char *omd_mov = NULL;
1896 char *nid_mov = NULL;
1897 char *uidgid_mov = NULL;
1901 enum changelog_rec_extra_flags cref = CLFE_INVALID;
1903 crf_wanted = (enum changelog_rec_flags)
1904 (crf_wanted & CLF_SUPPORTED);
1905 cref_want = (enum changelog_rec_extra_flags)
1906 (cref_want & CLFE_SUPPORTED);
1908 if ((rec->cr_flags & CLF_SUPPORTED) == crf_wanted) {
1909 if (!(rec->cr_flags & CLF_EXTRA_FLAGS) ||
1910 (rec->cr_flags & CLF_EXTRA_FLAGS &&
1911 (changelog_rec_extra_flags(rec)->cr_extra_flags &
1917 /* First move the variable-length name field */
1918 memmove((char *)rec + changelog_rec_offset(crf_wanted, cref_want),
1919 changelog_rec_name(rec), rec->cr_namelen);
1921 /* Locations of extensions in the remapped record */
1922 if (rec->cr_flags & CLF_EXTRA_FLAGS) {
1923 xattr_mov = (char *)rec +
1924 changelog_rec_offset(
1925 (enum changelog_rec_flags)
1926 (crf_wanted & CLF_SUPPORTED),
1927 (enum changelog_rec_extra_flags)
1928 (cref_want & ~CLFE_XATTR));
1929 omd_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_OPEN | CLFE_XATTR)));
1935 nid_mov = (char *)rec +
1936 changelog_rec_offset(
1937 (enum changelog_rec_flags)
1938 (crf_wanted & CLF_SUPPORTED),
1939 (enum changelog_rec_extra_flags)
1941 ~(CLFE_NID | CLFE_OPEN | CLFE_XATTR)));
1942 uidgid_mov = (char *)rec +
1943 changelog_rec_offset(
1944 (enum changelog_rec_flags)
1945 (crf_wanted & CLF_SUPPORTED),
1946 (enum changelog_rec_extra_flags)
1947 (cref_want & ~(CLFE_UIDGID |
1951 cref = (enum changelog_rec_extra_flags)
1952 changelog_rec_extra_flags(rec)->cr_extra_flags;
1955 ef_mov = (char *)rec +
1956 changelog_rec_offset(
1957 (enum changelog_rec_flags)
1958 (crf_wanted & ~CLF_EXTRA_FLAGS), CLFE_INVALID);
1959 jid_mov = (char *)rec +
1960 changelog_rec_offset((enum changelog_rec_flags)(crf_wanted &
1961 ~(CLF_EXTRA_FLAGS | CLF_JOBID)),
1963 rnm_mov = (char *)rec +
1964 changelog_rec_offset((enum changelog_rec_flags)(crf_wanted &
1970 /* Move the extension fields to the desired positions */
1971 if ((crf_wanted & CLF_EXTRA_FLAGS) &&
1972 (rec->cr_flags & CLF_EXTRA_FLAGS)) {
1973 if ((cref_want & CLFE_XATTR) && (cref & CLFE_XATTR))
1974 memmove(xattr_mov, changelog_rec_xattr(rec),
1975 sizeof(struct changelog_ext_xattr));
1977 if ((cref_want & CLFE_OPEN) && (cref & CLFE_OPEN))
1978 memmove(omd_mov, changelog_rec_openmode(rec),
1979 sizeof(struct changelog_ext_openmode));
1981 if ((cref_want & CLFE_NID) && (cref & CLFE_NID))
1982 memmove(nid_mov, changelog_rec_nid(rec),
1983 sizeof(struct changelog_ext_nid));
1985 if ((cref_want & CLFE_UIDGID) && (cref & CLFE_UIDGID))
1986 memmove(uidgid_mov, changelog_rec_uidgid(rec),
1987 sizeof(struct changelog_ext_uidgid));
1989 memmove(ef_mov, changelog_rec_extra_flags(rec),
1990 sizeof(struct changelog_ext_extra_flags));
1993 if ((crf_wanted & CLF_JOBID) && (rec->cr_flags & CLF_JOBID))
1994 memmove(jid_mov, changelog_rec_jobid(rec),
1995 sizeof(struct changelog_ext_jobid));
1997 if ((crf_wanted & CLF_RENAME) && (rec->cr_flags & CLF_RENAME))
1998 memmove(rnm_mov, changelog_rec_rename(rec),
1999 sizeof(struct changelog_ext_rename));
2001 /* Clear newly added fields */
2002 if (xattr_mov && (cref_want & CLFE_XATTR) &&
2003 !(cref & CLFE_XATTR))
2004 memset(xattr_mov, 0, sizeof(struct changelog_ext_xattr));
2006 if (omd_mov && (cref_want & CLFE_OPEN) &&
2007 !(cref & CLFE_OPEN))
2008 memset(omd_mov, 0, sizeof(struct changelog_ext_openmode));
2010 if (nid_mov && (cref_want & CLFE_NID) &&
2012 memset(nid_mov, 0, sizeof(struct changelog_ext_nid));
2014 if (uidgid_mov && (cref_want & CLFE_UIDGID) &&
2015 !(cref & CLFE_UIDGID))
2016 memset(uidgid_mov, 0, sizeof(struct changelog_ext_uidgid));
2018 if ((crf_wanted & CLF_EXTRA_FLAGS) &&
2019 !(rec->cr_flags & CLF_EXTRA_FLAGS))
2020 memset(ef_mov, 0, sizeof(struct changelog_ext_extra_flags));
2022 if ((crf_wanted & CLF_JOBID) && !(rec->cr_flags & CLF_JOBID))
2023 memset(jid_mov, 0, sizeof(struct changelog_ext_jobid));
2025 if ((crf_wanted & CLF_RENAME) && !(rec->cr_flags & CLF_RENAME))
2026 memset(rnm_mov, 0, sizeof(struct changelog_ext_rename));
2028 /* Update the record's flags accordingly */
2029 rec->cr_flags = (rec->cr_flags & CLF_FLAGMASK) | crf_wanted;
2030 if (rec->cr_flags & CLF_EXTRA_FLAGS)
2031 changelog_rec_extra_flags(rec)->cr_extra_flags =
2032 changelog_rec_extra_flags(rec)->cr_extra_flags |
2036 enum changelog_message_type {
2037 CL_RECORD = 10, /* message is a changelog_rec */
2038 CL_EOF = 11, /* at end of current changelog */
2041 /********* Misc **********/
2043 struct ioc_data_version {
2045 __u32 idv_layout_version; /* FLR: layout version for OST objects */
2046 __u32 idv_flags; /* enum ioc_data_version_flags */
2049 enum ioc_data_version_flags {
2050 LL_DV_RD_FLUSH = (1 << 0), /* Flush dirty pages from clients */
2051 LL_DV_WR_FLUSH = (1 << 1), /* Flush all caching pages from clients */
2055 #define offsetof(typ, memb) ((unsigned long)((char *)&(((typ *)0)->memb)))
2058 #define dot_lustre_name ".lustre"
2061 /********* HSM **********/
2063 /** HSM per-file state
2064 * See HSM_FLAGS below.
2067 HS_NONE = 0x00000000,
2068 HS_EXISTS = 0x00000001,
2069 HS_DIRTY = 0x00000002,
2070 HS_RELEASED = 0x00000004,
2071 HS_ARCHIVED = 0x00000008,
2072 HS_NORELEASE = 0x00000010,
2073 HS_NOARCHIVE = 0x00000020,
2074 HS_LOST = 0x00000040,
2077 /* HSM user-setable flags. */
2078 #define HSM_USER_MASK (HS_NORELEASE | HS_NOARCHIVE | HS_DIRTY)
2080 /* Other HSM flags. */
2081 #define HSM_STATUS_MASK (HS_EXISTS | HS_LOST | HS_RELEASED | HS_ARCHIVED)
2084 * All HSM-related possible flags that could be applied to a file.
2085 * This should be kept in sync with hsm_states.
2087 #define HSM_FLAGS_MASK (HSM_USER_MASK | HSM_STATUS_MASK)
2090 * HSM request progress state
2092 enum hsm_progress_states {
2099 static inline const char *hsm_progress_state2name(enum hsm_progress_states s)
2102 case HPS_WAITING: return "waiting";
2103 case HPS_RUNNING: return "running";
2104 case HPS_DONE: return "done";
2105 default: return "unknown";
2112 } __attribute__((packed));
2115 * Current HSM states of a Lustre file.
2117 * This structure purpose is to be sent to user-space mainly. It describes the
2118 * current HSM flags and in-progress action.
2120 struct hsm_user_state {
2121 /** Current HSM states, from enum hsm_states. */
2123 __u32 hus_archive_id;
2124 /** The current undergoing action, if there is one */
2125 __u32 hus_in_progress_state;
2126 __u32 hus_in_progress_action;
2127 struct hsm_extent hus_in_progress_location;
2128 char hus_extended_info[];
2131 struct hsm_state_set_ioc {
2132 struct lu_fid hssi_fid;
2134 __u64 hssi_clearmask;
2138 * This structure describes the current in-progress action for a file.
2139 * it is retuned to user space and send over the wire
2141 struct hsm_current_action {
2142 /** The current undergoing action, if there is one */
2143 /* state is one of hsm_progress_states */
2145 /* action is one of hsm_user_action */
2147 struct hsm_extent hca_location;
2150 /***** HSM user requests ******/
2151 /* User-generated (lfs/ioctl) request types */
2152 enum hsm_user_action {
2153 HUA_NONE = 1, /* no action (noop) */
2154 HUA_ARCHIVE = 10, /* copy to hsm */
2155 HUA_RESTORE = 11, /* prestage */
2156 HUA_RELEASE = 12, /* drop ost objects */
2157 HUA_REMOVE = 13, /* remove from archive */
2158 HUA_CANCEL = 14 /* cancel a request */
2161 static inline const char *hsm_user_action2name(enum hsm_user_action a)
2164 case HUA_NONE: return "NOOP";
2165 case HUA_ARCHIVE: return "ARCHIVE";
2166 case HUA_RESTORE: return "RESTORE";
2167 case HUA_RELEASE: return "RELEASE";
2168 case HUA_REMOVE: return "REMOVE";
2169 case HUA_CANCEL: return "CANCEL";
2170 default: return "UNKNOWN";
2175 * List of hr_flags (bit field)
2177 #define HSM_FORCE_ACTION 0x0001
2178 /* used by CT, cannot be set by user */
2179 #define HSM_GHOST_COPY 0x0002
2182 * Contains all the fixed part of struct hsm_user_request.
2185 struct hsm_request {
2186 __u32 hr_action; /* enum hsm_user_action */
2187 __u32 hr_archive_id; /* archive id, used only with HUA_ARCHIVE */
2188 __u64 hr_flags; /* request flags */
2189 __u32 hr_itemcount; /* item count in hur_user_item vector */
2193 struct hsm_user_item {
2194 struct lu_fid hui_fid;
2195 struct hsm_extent hui_extent;
2196 } __attribute__((packed));
2198 struct hsm_user_request {
2199 struct hsm_request hur_request;
2200 struct hsm_user_item hur_user_item[0];
2201 /* extra data blob at end of struct (after all
2202 * hur_user_items), only use helpers to access it
2204 } __attribute__((packed));
2206 /** Return pointer to data field in a hsm user request */
2207 static inline void *hur_data(struct hsm_user_request *hur)
2209 return &(hur->hur_user_item[hur->hur_request.hr_itemcount]);
2213 * Compute the current length of the provided hsm_user_request. This returns -1
2214 * instead of an errno because ssize_t is defined to be only [ -1, SSIZE_MAX ]
2216 * return -1 on bounds check error.
2218 static inline ssize_t hur_len(struct hsm_user_request *hur)
2222 /* can't overflow a __u64 since hr_itemcount is only __u32 */
2223 size = offsetof(struct hsm_user_request, hur_user_item[0]) +
2224 (__u64)hur->hur_request.hr_itemcount *
2225 sizeof(hur->hur_user_item[0]) + hur->hur_request.hr_data_len;
2227 if ((ssize_t)size < 0)
2233 /****** HSM RPCs to copytool *****/
2234 /* Message types the copytool may receive */
2235 enum hsm_message_type {
2236 HMT_ACTION_LIST = 100, /* message is a hsm_action_list */
2239 /* Actions the copytool may be instructed to take for a given action_item */
2240 enum hsm_copytool_action {
2241 HSMA_NONE = 10, /* no action */
2242 HSMA_ARCHIVE = 20, /* arbitrary offset */
2248 static inline const char *hsm_copytool_action2name(enum hsm_copytool_action a)
2251 case HSMA_NONE: return "NOOP";
2252 case HSMA_ARCHIVE: return "ARCHIVE";
2253 case HSMA_RESTORE: return "RESTORE";
2254 case HSMA_REMOVE: return "REMOVE";
2255 case HSMA_CANCEL: return "CANCEL";
2256 default: return "UNKNOWN";
2260 /* Copytool item action description */
2261 struct hsm_action_item {
2262 __u32 hai_len; /* valid size of this struct */
2263 __u32 hai_action; /* hsm_copytool_action, but use known size */
2264 struct lu_fid hai_fid; /* Lustre FID to operate on */
2265 struct lu_fid hai_dfid; /* fid used for data access */
2266 struct hsm_extent hai_extent; /* byte range to operate on */
2267 __u64 hai_cookie; /* action cookie from coordinator */
2268 __u64 hai_gid; /* grouplock id */
2269 char hai_data[0]; /* variable length */
2270 } __attribute__((packed));
2273 * helper function which print in hexa the first bytes of
2276 * \param hai [IN] record to print
2277 * \param buffer [IN,OUT] buffer to write the hex string to
2278 * \param len [IN] max buffer length
2282 static inline char *hai_dump_data_field(const struct hsm_action_item *hai,
2283 char *buffer, size_t len)
2290 data_len = hai->hai_len - sizeof(*hai);
2291 for (i = 0; (i < data_len) && (len > 2); i++) {
2292 snprintf(ptr, 3, "%02X", (unsigned char)hai->hai_data[i]);
2302 /* Copytool action list */
2303 #define HAL_VERSION 1
2304 #define HAL_MAXSIZE LNET_MTU /* bytes, used in userspace only */
2305 struct hsm_action_list {
2307 __u32 hal_count; /* number of hai's to follow */
2308 __u64 hal_compound_id; /* returned by coordinator, ignored */
2310 __u32 hal_archive_id; /* which archive backend */
2312 char hal_fsname[0]; /* null-terminated */
2313 /* struct hsm_action_item[hal_count] follows, aligned on 8-byte
2314 boundaries. See hai_zero */
2315 } __attribute__((packed));
2317 /* Return pointer to first hai in action list */
2318 static inline struct hsm_action_item *hai_first(struct hsm_action_list *hal)
2320 size_t offset = __ALIGN_KERNEL(strlen(hal->hal_fsname) + 1, 8);
2322 return (struct hsm_action_item *)(hal->hal_fsname + offset);
2325 /* Return pointer to next hai */
2326 static inline struct hsm_action_item * hai_next(struct hsm_action_item *hai)
2328 size_t offset = __ALIGN_KERNEL(hai->hai_len, 8);
2330 return (struct hsm_action_item *)((char *)hai + offset);
2333 /* Return size of an hsm_action_list */
2334 static inline size_t hal_size(struct hsm_action_list *hal)
2338 struct hsm_action_item *hai;
2340 sz = sizeof(*hal) + __ALIGN_KERNEL(strlen(hal->hal_fsname) + 1, 8);
2341 hai = hai_first(hal);
2342 for (i = 0; i < hal->hal_count ; i++, hai = hai_next(hai))
2343 sz += __ALIGN_KERNEL(hai->hai_len, 8);
2349 * describe the attributes to be set on imported file
2351 struct hsm_user_import {
2360 __u32 hui_archive_id;
2363 /* Copytool progress reporting */
2364 #define HP_FLAG_COMPLETED 0x01
2365 #define HP_FLAG_RETRY 0x02
2367 struct hsm_progress {
2368 struct lu_fid hp_fid;
2370 struct hsm_extent hp_extent;
2372 __u16 hp_errval; /* positive val */
2377 __u64 hc_data_version;
2379 __u16 hc_errval; /* positive val */
2381 struct hsm_action_item hc_hai;
2385 enum llapi_json_types {
2386 LLAPI_JSON_INTEGER = 1,
2392 struct llapi_json_item {
2401 struct llapi_json_item *lji_next;
2404 struct llapi_json_item_list {
2405 int ljil_item_count;
2406 struct llapi_json_item *ljil_items;
2409 enum lu_ladvise_type {
2410 LU_LADVISE_INVALID = 0,
2411 LU_LADVISE_WILLREAD = 1,
2412 LU_LADVISE_DONTNEED = 2,
2413 LU_LADVISE_LOCKNOEXPAND = 3,
2414 LU_LADVISE_LOCKAHEAD = 4,
2418 #define LU_LADVISE_NAMES { \
2419 [LU_LADVISE_WILLREAD] = "willread", \
2420 [LU_LADVISE_DONTNEED] = "dontneed", \
2421 [LU_LADVISE_LOCKNOEXPAND] = "locknoexpand", \
2422 [LU_LADVISE_LOCKAHEAD] = "lockahead", \
2425 /* This is the userspace argument for ladvise. It is currently the same as
2426 * what goes on the wire (struct lu_ladvise), but is defined separately as we
2427 * may need info which is only used locally. */
2428 struct llapi_lu_ladvise {
2429 __u16 lla_advice; /* advice type */
2430 __u16 lla_value1; /* values for different advice types */
2432 __u64 lla_start; /* first byte of extent for advice */
2433 __u64 lla_end; /* last byte of extent for advice */
2439 LF_ASYNC = 0x00000001,
2440 LF_UNSET = 0x00000002,
2443 #define LADVISE_MAGIC 0x1ADF1CE0
2444 /* Masks of valid flags for each advice */
2445 #define LF_LOCKNOEXPAND_MASK LF_UNSET
2446 /* Flags valid for all advices not explicitly specified */
2447 #define LF_DEFAULT_MASK LF_ASYNC
2449 #define LF_MASK (LF_ASYNC | LF_UNSET)
2451 #define lla_lockahead_mode lla_value1
2452 #define lla_peradvice_flags lla_value2
2453 #define lla_lockahead_result lla_value3
2455 /* This is the userspace argument for ladvise, corresponds to ladvise_hdr which
2456 * is used on the wire. It is defined separately as we may need info which is
2457 * only used locally. */
2458 struct llapi_ladvise_hdr {
2459 __u32 lah_magic; /* LADVISE_MAGIC */
2460 __u32 lah_count; /* number of advices */
2461 __u64 lah_flags; /* from enum ladvise_flag */
2462 __u32 lah_value1; /* unused */
2463 __u32 lah_value2; /* unused */
2464 __u64 lah_value3; /* unused */
2465 struct llapi_lu_ladvise lah_advise[0]; /* advices in this header */
2468 #define LAH_COUNT_MAX (1024)
2472 SK_CRYPT_INVALID = -1,
2474 SK_CRYPT_AES256_CTR = 1,
2478 SK_HMAC_INVALID = -1,
2484 struct sk_crypt_type {
2485 const char *sct_name;
2489 struct sk_hmac_type {
2490 const char *sht_name;
2494 enum lock_mode_user {
2500 #define LOCK_MODE_NAMES { \
2501 [MODE_READ_USER] = "READ",\
2502 [MODE_WRITE_USER] = "WRITE"\
2505 enum lockahead_results {
2506 LLA_RESULT_SENT = 0,
2507 LLA_RESULT_DIFFERENT,
2511 enum lu_heat_flag_bit {
2512 LU_HEAT_FLAG_BIT_INVALID = 0,
2513 LU_HEAT_FLAG_BIT_OFF,
2514 LU_HEAT_FLAG_BIT_CLEAR,
2518 LU_HEAT_FLAG_OFF = 1ULL << LU_HEAT_FLAG_BIT_OFF,
2519 LU_HEAT_FLAG_CLEAR = 1ULL << LU_HEAT_FLAG_BIT_CLEAR,
2522 enum obd_heat_type {
2523 OBD_HEAT_READSAMPLE = 0,
2524 OBD_HEAT_WRITESAMPLE = 1,
2525 OBD_HEAT_READBYTE = 2,
2526 OBD_HEAT_WRITEBYTE = 3,
2530 #define LU_HEAT_NAMES { \
2531 [OBD_HEAT_READSAMPLE] = "readsample", \
2532 [OBD_HEAT_WRITESAMPLE] = "writesample", \
2533 [OBD_HEAT_READBYTE] = "readbyte", \
2534 [OBD_HEAT_WRITEBYTE] = "writebyte", \
2549 static inline const char *pcc_type2string(enum lu_pcc_type type)
2554 case LU_PCC_READWRITE:
2561 struct lu_pcc_attach {
2562 __u32 pcca_type; /* PCC type */
2563 __u32 pcca_id; /* archive ID for readwrite, group ID for readonly */
2566 enum lu_pcc_detach_opts {
2567 PCC_DETACH_OPT_NONE = 0, /* Detach only, keep the PCC copy */
2568 PCC_DETACH_OPT_UNCACHE, /* Remove the cached file after detach */
2571 struct lu_pcc_detach_fid {
2572 /* fid of the file to detach */
2573 struct lu_fid pccd_fid;
2577 struct lu_pcc_detach {
2581 enum lu_pcc_state_flags {
2582 PCC_STATE_FL_NONE = 0x0,
2583 /* The inode attr is cached locally */
2584 PCC_STATE_FL_ATTR_VALID = 0x01,
2585 /* The file is being attached into PCC */
2586 PCC_STATE_FL_ATTACHING = 0x02,
2589 struct lu_pcc_state {
2590 __u32 pccs_type; /* enum lu_pcc_type */
2591 __u32 pccs_open_count;
2592 __u32 pccs_flags; /* enum lu_pcc_state_flags */
2594 char pccs_path[PATH_MAX];
2599 /* make header's size equal lu_fid */
2602 struct lu_fid fa_fids[0];
2604 #define OBD_MAX_FIDS_IN_ARRAY 4096
2606 #if defined(__cplusplus)
2610 /** @} lustreuser */
2612 #endif /* _LUSTRE_USER_H */