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/
31 * lustre/include/lustre/lustre_user.h
33 * Lustre public user-space interface definitions.
36 #ifndef _LUSTRE_USER_H
37 #define _LUSTRE_USER_H
39 /** \defgroup lustreuser lustreuser
44 # define __USE_ISOC99 1
46 # include <stdio.h> /* snprintf() */
47 # include <stdlib.h> /* abs() */
49 # include <sys/stat.h>
52 # define __USE_XOPEN2K8 1
53 # define FILEID_LUSTRE 0x97 /* for name_to_handle_at() (and llapi_fd2fid()) */
54 #endif /* !__KERNEL__ */
57 #include <linux/limits.h>
58 #include <linux/kernel.h>
59 #include <linux/string.h>
60 #include <linux/quota.h>
61 #include <linux/types.h>
62 #include <linux/unistd.h>
63 #include <linux/lustre/lustre_fiemap.h>
64 #include <linux/lustre/lustre_ver.h>
66 #if defined(__cplusplus)
70 #ifdef __STRICT_ANSI__
71 #define typeof __typeof__
75 * This is a temporary solution of adding quota type.
76 * Should be removed as soon as system header is updated.
79 #define LL_MAXQUOTAS 3
81 #define INITQFNAMES { \
82 "user", /* USRQUOTA */ \
83 "group", /* GRPQUOTA */ \
84 "project", /* PRJQUOTA */ \
98 * We need to always use 64bit version because the structure
99 * is shared across entire cluster where 32bit and 64bit machines
102 #if __BITS_PER_LONG != 64 || defined(__ARCH_WANT_STAT64)
103 typedef struct stat64 lstat_t;
104 #define lstat_f lstat64
105 #define fstat_f fstat64
106 #define fstatat_f fstatat64
108 typedef struct stat lstat_t;
109 #define lstat_f lstat
110 #define fstat_f fstat
111 #define fstatat_f fstatat
114 #ifndef STATX_BASIC_STATS
116 * Timestamp structure for the timestamps in struct statx.
118 * tv_sec holds the number of seconds before (negative) or after (positive)
119 * 00:00:00 1st January 1970 UTC.
121 * tv_nsec holds a number of nanoseconds (0..999,999,999) after the tv_sec time.
123 * __reserved is held in case we need a yet finer resolution.
125 struct statx_timestamp {
132 * Structures for the extended file attribute retrieval system call
135 * The caller passes a mask of what they're specifically interested in as a
136 * parameter to statx(). What statx() actually got will be indicated in
137 * st_mask upon return.
139 * For each bit in the mask argument:
141 * - if the datum is not supported:
143 * - the bit will be cleared, and
145 * - the datum will be set to an appropriate fabricated value if one is
146 * available (eg. CIFS can take a default uid and gid), otherwise
148 * - the field will be cleared;
150 * - otherwise, if explicitly requested:
152 * - the datum will be synchronised to the server if AT_STATX_FORCE_SYNC is
153 * set or if the datum is considered out of date, and
155 * - the field will be filled in and the bit will be set;
157 * - otherwise, if not requested, but available in approximate form without any
158 * effort, it will be filled in anyway, and the bit will be set upon return
159 * (it might not be up to date, however, and no attempt will be made to
160 * synchronise the internal state first);
162 * - otherwise the field and the bit will be cleared before returning.
164 * Items in STATX_BASIC_STATS may be marked unavailable on return, but they
165 * will have values installed for compatibility purposes so that stat() and
166 * co. can be emulated in userspace.
170 __u32 stx_mask; /* What results were written [uncond] */
171 __u32 stx_blksize; /* Preferred general I/O size [uncond] */
172 __u64 stx_attributes; /* Flags conveying information about the file [uncond] */
174 __u32 stx_nlink; /* Number of hard links */
175 __u32 stx_uid; /* User ID of owner */
176 __u32 stx_gid; /* Group ID of owner */
177 __u16 stx_mode; /* File mode */
180 __u64 stx_ino; /* Inode number */
181 __u64 stx_size; /* File size */
182 __u64 stx_blocks; /* Number of 512-byte blocks allocated */
183 __u64 stx_attributes_mask; /* Mask to show what's supported in stx_attributes */
185 struct statx_timestamp stx_atime; /* Last access time */
186 struct statx_timestamp stx_btime; /* File creation time */
187 struct statx_timestamp stx_ctime; /* Last attribute change time */
188 struct statx_timestamp stx_mtime; /* Last data modification time */
190 __u32 stx_rdev_major; /* Device ID of special file [if bdev/cdev] */
191 __u32 stx_rdev_minor;
192 __u32 stx_dev_major; /* ID of device containing file [uncond] */
195 __u64 __spare2[14]; /* Spare space for future expansion */
200 * Flags to be stx_mask
202 * Query request/result mask for statx() and struct statx::stx_mask.
204 * These bits should be set in the mask argument of statx() to request
205 * particular items when calling statx().
207 #define STATX_TYPE 0x00000001U /* Want/got stx_mode & S_IFMT */
208 #define STATX_MODE 0x00000002U /* Want/got stx_mode & ~S_IFMT */
209 #define STATX_NLINK 0x00000004U /* Want/got stx_nlink */
210 #define STATX_UID 0x00000008U /* Want/got stx_uid */
211 #define STATX_GID 0x00000010U /* Want/got stx_gid */
212 #define STATX_ATIME 0x00000020U /* Want/got stx_atime */
213 #define STATX_MTIME 0x00000040U /* Want/got stx_mtime */
214 #define STATX_CTIME 0x00000080U /* Want/got stx_ctime */
215 #define STATX_INO 0x00000100U /* Want/got stx_ino */
216 #define STATX_SIZE 0x00000200U /* Want/got stx_size */
217 #define STATX_BLOCKS 0x00000400U /* Want/got stx_blocks */
218 #define STATX_BASIC_STATS 0x000007ffU /* The stuff in the normal stat struct */
219 #define STATX_BTIME 0x00000800U /* Want/got stx_btime */
220 #define STATX_ALL 0x00000fffU /* All currently supported flags */
221 #define STATX__RESERVED 0x80000000U /* Reserved for future struct statx expansion */
224 * Attributes to be found in stx_attributes and masked in stx_attributes_mask.
226 * These give information about the features or the state of a file that might
227 * be of use to ordinary userspace programs such as GUIs or ls rather than
230 * Note that the flags marked [I] correspond to generic FS_IOC_FLAGS
231 * semantically. Where possible, the numerical value is picked to correspond
234 #define STATX_ATTR_COMPRESSED 0x00000004 /* [I] File is compressed by the fs */
235 #define STATX_ATTR_IMMUTABLE 0x00000010 /* [I] File is marked immutable */
236 #define STATX_ATTR_APPEND 0x00000020 /* [I] File is append-only */
237 #define STATX_ATTR_NODUMP 0x00000040 /* [I] File is not to be dumped */
238 #define STATX_ATTR_ENCRYPTED 0x00000800 /* [I] File requires key to decrypt in fs */
240 #define STATX_ATTR_AUTOMOUNT 0x00001000 /* Dir: Automount trigger */
242 #define AT_STATX_SYNC_TYPE 0x6000 /* Type of synchronisation required from statx() */
243 #define AT_STATX_SYNC_AS_STAT 0x0000 /* - Do whatever stat() does */
244 #define AT_STATX_FORCE_SYNC 0x2000 /* - Force the attributes to be sync'd with the server */
245 #define AT_STATX_DONT_SYNC 0x4000 /* - Don't sync attributes with the server */
247 #endif /* STATX_BASIC_STATS */
249 typedef struct statx lstatx_t;
251 #define LUSTRE_EOF 0xffffffffffffffffULL
254 #define LL_SUPER_MAGIC 0x0BD00BD0
256 #define LL_IOC_GETVERSION _IOR('f', 3, long)
257 #define FSFILT_IOC_GETVERSION LL_IOC_GETVERSION /* backward compat */
258 #define LL_IOC_RESIZE_FS _IOW('f', 16, __u64)
260 /* FIEMAP flags supported by Lustre */
261 #define LUSTRE_FIEMAP_FLAGS_COMPAT (FIEMAP_FLAG_SYNC | FIEMAP_FLAG_DEVICE_ORDER)
263 enum obd_statfs_state {
264 OS_STATFS_DEGRADED = 0x00000001, /**< RAID degraded/rebuilding */
265 OS_STATFS_READONLY = 0x00000002, /**< filesystem is read-only */
266 OS_STATFS_NOPRECREATE = 0x00000004, /**< no object precreation */
267 OS_STATFS_UNUSED1 = 0x00000008, /**< obsolete 1.6, was EROFS=30 */
268 OS_STATFS_UNUSED2 = 0x00000010, /**< obsolete 1.6, was EROFS=30 */
269 OS_STATFS_ENOSPC = 0x00000020, /**< not enough free space */
270 OS_STATFS_ENOINO = 0x00000040, /**< not enough inodes */
271 OS_STATFS_SUM = 0x00000100, /**< aggregated for all tagrets */
272 OS_STATFS_NONROT = 0x00000200, /**< non-rotational device */
275 /** filesystem statistics/attributes for target device */
277 __u64 os_type; /* EXT4_SUPER_MAGIC, UBERBLOCK_MAGIC */
278 __u64 os_blocks; /* total size in #os_bsize blocks */
279 __u64 os_bfree; /* number of unused blocks */
280 __u64 os_bavail; /* blocks available for allocation */
281 __u64 os_files; /* total number of objects */
282 __u64 os_ffree; /* # objects that could be created */
283 __u8 os_fsid[40]; /* identifier for filesystem */
284 __u32 os_bsize; /* block size in bytes for os_blocks */
285 __u32 os_namelen; /* maximum length of filename in bytes*/
286 __u64 os_maxbytes; /* maximum object size in bytes */
287 __u32 os_state; /**< obd_statfs_state OS_STATFS_* */
288 __u32 os_fprecreated; /* objs available now to the caller */
289 /* used in QoS code to find preferred
291 __u32 os_granted; /* space granted for MDS */
292 __u32 os_spare3; /* Unused padding fields. Remember */
293 __u32 os_spare4; /* to fix lustre_swab_obd_statfs() */
301 /** additional filesystem attributes for target device */
302 struct obd_statfs_info {
303 __u32 os_reserved_mb_low; /* reserved mb low */
304 __u32 os_reserved_mb_high; /* reserved mb high */
305 bool os_enable_pre; /* enable pre create logic */
311 * FID is a cluster-wide unique identifier of a file or an object (stripe).
312 * FIDs are never reused.
316 * FID sequence. Sequence is a unit of migration: all files (objects)
317 * with FIDs from a given sequence are stored on the same server.
318 * Lustre should support 2^64 objects, so even if each sequence
319 * has only a single object we can still enumerate 2^64 objects.
322 /* FID number within sequence. */
325 * FID version, used to distinguish different versions (in the sense
326 * of snapshots, etc.) of the same file system object. Not currently
330 } __attribute__((packed));
332 static inline bool fid_is_zero(const struct lu_fid *fid)
334 return fid->f_seq == 0 && fid->f_oid == 0;
337 /* The data name_to_handle_at() places in a struct file_handle (at f_handle) */
338 struct lustre_file_handle {
339 struct lu_fid lfh_child;
340 struct lu_fid lfh_parent;
343 /* Currently, the filter_fid::ff_parent::f_ver is not the real parent
344 * MDT-object's FID::f_ver, instead it is the OST-object index in its
345 * parent MDT-object's layout EA. */
346 #define f_stripe_idx f_ver
349 __u32 ol_stripe_size;
350 __u32 ol_stripe_count;
354 } __attribute__((packed));
356 /* The filter_fid structure has changed several times over its lifetime.
357 * For a long time "trusted.fid" held the MDT inode parent FID/IGIF and
358 * stripe_index and the "self FID" (objid/seq) to be able to recover the
359 * OST objects in case of corruption. With the move to 2.4 and OSD-API for
360 * the OST, the "trusted.lma" xattr was added to the OST objects to store
361 * the "self FID" to be consistent with the MDT on-disk format, and the
362 * filter_fid only stored the MDT inode parent FID and stripe index.
364 * In 2.10, the addition of PFL composite layouts required more information
365 * to be stored into the filter_fid in order to be able to identify which
366 * component the OST object belonged. As well, the stripe size may vary
367 * between components, so it was no longer safe to assume the stripe size
368 * or stripe_count of a file. This is also more robust for plain layouts.
370 * For ldiskfs OSTs that were formatted with 256-byte inodes, there is not
371 * enough space to store both the filter_fid and LMA in the inode, so they
372 * are packed into struct lustre_ost_attrs on disk in trusted.lma to avoid
373 * an extra seek for every OST object access.
375 * In 2.11, FLR mirror layouts also need to store the layout version and
376 * range so that writes to old versions of the layout are not allowed.
377 * That ensures that mirrored objects are not modified by evicted clients,
378 * and ensures that the components are correctly marked stale on the MDT.
380 struct filter_fid_18_23 {
381 struct lu_fid ff_parent; /* stripe_idx in f_ver */
386 struct filter_fid_24_29 {
387 struct lu_fid ff_parent; /* stripe_idx in f_ver */
390 struct filter_fid_210 {
391 struct lu_fid ff_parent; /* stripe_idx in f_ver */
392 struct ost_layout ff_layout;
396 struct lu_fid ff_parent; /* stripe_idx in f_ver */
397 struct ost_layout ff_layout;
398 __u32 ff_layout_version;
399 __u32 ff_range; /* range of layout version that
400 * write are allowed */
401 } __attribute__((packed));
403 /* Userspace should treat lu_fid as opaque, and only use the following methods
404 * to print or parse them. Other functions (e.g. compare, swab) could be moved
405 * here from lustre_idl.h if needed. */
409 LMAC_HSM = 0x00000001,
410 /* LMAC_SOM = 0x00000002, obsolete since 2.8.0 */
411 LMAC_NOT_IN_OI = 0x00000004, /* the object does NOT need OI mapping */
412 LMAC_FID_ON_OST = 0x00000008, /* For OST-object, its OI mapping is
413 * under /O/<seq>/d<x>. */
414 LMAC_STRIPE_INFO = 0x00000010, /* stripe info in the LMA EA. */
415 LMAC_COMP_INFO = 0x00000020, /* Component info in the LMA EA. */
416 LMAC_IDX_BACKUP = 0x00000040, /* Has index backup. */
420 * Masks for all features that should be supported by a Lustre version to
421 * access a specific file.
422 * This information is stored in lustre_mdt_attrs::lma_incompat.
425 LMAI_RELEASED = 0x00000001, /* file is released */
426 LMAI_AGENT = 0x00000002, /* agent inode */
427 LMAI_REMOTE_PARENT = 0x00000004, /* the parent of the object
428 is on the remote MDT */
429 LMAI_STRIPED = 0x00000008, /* striped directory inode */
430 LMAI_ORPHAN = 0x00000010, /* inode is orphan */
431 LMAI_ENCRYPT = 0x00000020, /* inode is encrypted */
432 LMA_INCOMPAT_SUPP = (LMAI_AGENT | LMAI_REMOTE_PARENT | \
433 LMAI_STRIPED | LMAI_ORPHAN | LMAI_ENCRYPT)
438 * Following struct for object attributes, that will be kept inode's EA.
439 * Introduced in 2.0 release (please see b15993, for details)
440 * Added to all objects since Lustre 2.4 as contains self FID
442 struct lustre_mdt_attrs {
444 * Bitfield for supported data in this structure. From enum lma_compat.
445 * lma_self_fid and lma_flags are always available.
449 * Per-file incompat feature list. Lustre version should support all
450 * flags set in this field. The supported feature mask is available in
454 /** FID of this inode */
455 struct lu_fid lma_self_fid;
458 #define PFID_STRIPE_IDX_BITS 16
459 #define PFID_STRIPE_COUNT_MASK ((1 << PFID_STRIPE_IDX_BITS) - 1)
461 struct lustre_ost_attrs {
462 /* Use lustre_mdt_attrs directly for now, need a common header
463 * structure if want to change lustre_mdt_attrs in future. */
464 struct lustre_mdt_attrs loa_lma;
466 /* Below five elements are for OST-object's PFID EA, the
467 * lma_parent_fid::f_ver is composed of the stripe_count (high 16 bits)
468 * and the stripe_index (low 16 bits), the size should not exceed
469 * 5 * sizeof(__u64)) to be accessable by old Lustre. If the flag
470 * LMAC_STRIPE_INFO is set, then loa_parent_fid and loa_stripe_size
471 * are valid; if the flag LMAC_COMP_INFO is set, then the next three
472 * loa_comp_* elements are valid. */
473 struct lu_fid loa_parent_fid;
474 __u32 loa_stripe_size;
476 __u64 loa_comp_start;
481 * Prior to 2.4, the LMA structure also included SOM attributes which has since
482 * been moved to a dedicated xattr
483 * lma_flags was also removed because of lma_compat/incompat fields.
485 #define LMA_OLD_SIZE (sizeof(struct lustre_mdt_attrs) + 5 * sizeof(__u64))
487 enum lustre_som_flags {
488 /* Unknow or no SoM data, must get size from OSTs. */
489 SOM_FL_UNKNOWN = 0x0000,
490 /* Known strictly correct, FLR or DoM file (SoM guaranteed). */
491 SOM_FL_STRICT = 0x0001,
492 /* Known stale - was right at some point in the past, but it is
493 * known (or likely) to be incorrect now (e.g. opened for write). */
494 SOM_FL_STALE = 0x0002,
495 /* Approximate, may never have been strictly correct,
496 * need to sync SOM data to achieve eventual consistency. */
497 SOM_FL_LAZY = 0x0004,
500 struct lustre_som_attrs {
502 __u16 lsa_reserved[3];
508 * OST object IDentifier.
516 struct lu_fid oi_fid;
518 } __attribute__((packed));
520 #define DOSTID "%#llx:%llu"
521 #define POSTID(oi) ((unsigned long long)ostid_seq(oi)), \
522 ((unsigned long long)ostid_id(oi))
524 struct ll_futimes_3 {
526 __u64 lfu_atime_nsec;
528 __u64 lfu_mtime_nsec;
530 __u64 lfu_ctime_nsec;
534 * Maximum number of mirrors currently implemented.
536 #define LUSTRE_MIRROR_COUNT_MAX 16
538 /* Lease types for use as arg and return of LL_IOC_{GET,SET}_LEASE ioctl. */
540 LL_LEASE_RDLCK = 0x01,
541 LL_LEASE_WRLCK = 0x02,
542 LL_LEASE_UNLCK = 0x04,
545 enum ll_lease_flags {
546 LL_LEASE_RESYNC = 0x1,
547 LL_LEASE_RESYNC_DONE = 0x2,
548 LL_LEASE_LAYOUT_MERGE = 0x4,
549 LL_LEASE_LAYOUT_SPLIT = 0x8,
550 LL_LEASE_PCC_ATTACH = 0x10,
553 #define IOC_IDS_MAX 4096
554 struct ll_ioc_lease {
561 struct ll_ioc_lease_id {
572 * The ioctl naming rules:
573 * LL_* - works on the currently opened filehandle instead of parent dir
574 * *_OBD_* - gets data for both OSC or MDC (LOV, LMV indirectly)
575 * *_MDC_* - gets/sets data related to MDC
576 * *_LOV_* - gets/sets data related to OSC/LOV
577 * *FILE* - called on parent dir and passes in a filename
578 * *STRIPE* - set/get lov_user_md
579 * *INFO - set/get lov_user_mds_data
581 /* lustre_ioctl.h 101-150 */
582 /* ioctl codes 128-143 are reserved for fsverity */
583 #define LL_IOC_GETFLAGS _IOR ('f', 151, long)
584 #define LL_IOC_SETFLAGS _IOW ('f', 152, long)
585 #define LL_IOC_CLRFLAGS _IOW ('f', 153, long)
586 #define LL_IOC_LOV_SETSTRIPE _IOW ('f', 154, long)
587 #define LL_IOC_LOV_SETSTRIPE_NEW _IOWR('f', 154, struct lov_user_md)
588 #define LL_IOC_LOV_GETSTRIPE _IOW ('f', 155, long)
589 #define LL_IOC_LOV_GETSTRIPE_NEW _IOR('f', 155, struct lov_user_md)
590 #define LL_IOC_LOV_SETEA _IOW ('f', 156, long)
591 #define LL_IOC_GROUP_LOCK _IOW ('f', 158, long)
592 #define LL_IOC_GROUP_UNLOCK _IOW ('f', 159, long)
593 #define IOC_OBD_STATFS _IOWR('f', 164, struct obd_statfs *)
594 #define LL_IOC_FLUSHCTX _IOW ('f', 166, long)
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 221-233 */
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_UNLOCK_FOREIGN _IO('f', 242)
624 #define LL_IOC_SET_LEASE _IOWR('f', 243, struct ll_ioc_lease)
625 #define LL_IOC_SET_LEASE_OLD _IOWR('f', 243, long)
626 #define LL_IOC_GET_LEASE _IO('f', 244)
627 #define LL_IOC_HSM_IMPORT _IOWR('f', 245, struct hsm_user_import)
628 #define LL_IOC_LMV_SET_DEFAULT_STRIPE _IOWR('f', 246, struct lmv_user_md)
629 #define LL_IOC_MIGRATE _IOR('f', 247, int)
630 #define LL_IOC_FID2MDTIDX _IOWR('f', 248, struct lu_fid)
631 #define LL_IOC_GETPARENT _IOWR('f', 249, struct getparent)
632 #define LL_IOC_LADVISE _IOR('f', 250, struct llapi_lu_ladvise)
633 #define LL_IOC_HEAT_GET _IOWR('f', 251, struct lu_heat)
634 #define LL_IOC_HEAT_SET _IOW('f', 251, __u64)
635 #define LL_IOC_PCC_ATTACH _IOW('f', 252, struct lu_pcc_attach)
636 #define LL_IOC_PCC_DETACH _IOW('f', 252, struct lu_pcc_detach)
637 #define LL_IOC_PCC_DETACH_BY_FID _IOW('f', 252, struct lu_pcc_detach_fid)
638 #define LL_IOC_PCC_STATE _IOR('f', 252, struct lu_pcc_state)
639 #define LL_IOC_PROJECT _IOW('f', 253, struct lu_project)
641 #ifndef FS_IOC_FSGETXATTR
643 * Structure for FS_IOC_FSGETXATTR and FS_IOC_FSSETXATTR.
646 __u32 fsx_xflags; /* xflags field value (get/set) */
647 __u32 fsx_extsize; /* extsize field value (get/set)*/
648 __u32 fsx_nextents; /* nextents field value (get) */
649 __u32 fsx_projid; /* project identifier (get/set) */
650 unsigned char fsx_pad[12];
652 #define FS_IOC_FSGETXATTR _IOR('X', 31, struct fsxattr)
653 #define FS_IOC_FSSETXATTR _IOW('X', 32, struct fsxattr)
655 #ifndef FS_XFLAG_PROJINHERIT
656 #define FS_XFLAG_PROJINHERIT 0x00000200
660 #define LL_STATFS_LMV 1
661 #define LL_STATFS_LOV 2
662 #define LL_STATFS_NODELAY 4
664 #define IOC_MDC_TYPE 'i'
665 #define IOC_MDC_LOOKUP _IOWR(IOC_MDC_TYPE, 20, struct obd_device *)
666 #define IOC_MDC_GETFILESTRIPE _IOWR(IOC_MDC_TYPE, 21, struct lov_user_md *)
667 #define IOC_MDC_GETFILEINFO_V1 _IOWR(IOC_MDC_TYPE, 22, struct lov_user_mds_data_v1 *)
668 #define IOC_MDC_GETFILEINFO_V2 _IOWR(IOC_MDC_TYPE, 22, struct lov_user_mds_data)
669 #define LL_IOC_MDC_GETINFO_V1 _IOWR(IOC_MDC_TYPE, 23, struct lov_user_mds_data_v1 *)
670 #define LL_IOC_MDC_GETINFO_V2 _IOWR(IOC_MDC_TYPE, 23, struct lov_user_mds_data)
671 #define IOC_MDC_GETFILEINFO IOC_MDC_GETFILEINFO_V1
672 #define LL_IOC_MDC_GETINFO LL_IOC_MDC_GETINFO_V1
674 #define MAX_OBD_NAME 128 /* If this changes, a NEW ioctl must be added */
676 /* Define O_LOV_DELAY_CREATE to be a mask that is not useful for regular
677 * files, but are unlikely to be used in practice and are not harmful if
678 * used incorrectly. O_NOCTTY and FASYNC are only meaningful for character
679 * devices and are safe for use on new files. See LU-4209. */
680 /* To be compatible with old statically linked binary we keep the check for
681 * the older 0100000000 flag. This is already removed upstream. LU-812. */
682 #define O_LOV_DELAY_CREATE_1_8 0100000000 /* FMODE_NONOTIFY masked in 2.6.36 */
684 #define FASYNC 00020000 /* fcntl, for BSD compatibility */
686 #define O_LOV_DELAY_CREATE_MASK (O_NOCTTY | FASYNC)
687 #define O_LOV_DELAY_CREATE (O_LOV_DELAY_CREATE_1_8 | \
688 O_LOV_DELAY_CREATE_MASK)
689 /* O_FILE_ENC principle is similar to O_LOV_DELAY_CREATE above,
690 * for access to encrypted files without the encryption key.
692 #define O_FILE_ENC (O_NOCTTY | O_NDELAY)
694 #define LL_FILE_IGNORE_LOCK 0x00000001
695 #define LL_FILE_GROUP_LOCKED 0x00000002
696 #define LL_FILE_READAHEA 0x00000004
697 #define LL_FILE_LOCKED_DIRECTIO 0x00000008 /* client-side locks with dio */
698 #define LL_FILE_FLOCK_WARNING 0x00000020 /* warned about disabled flock */
700 #define LOV_USER_MAGIC_V1 0x0BD10BD0
701 #define LOV_USER_MAGIC LOV_USER_MAGIC_V1
702 #define LOV_USER_MAGIC_JOIN_V1 0x0BD20BD0
703 #define LOV_USER_MAGIC_V3 0x0BD30BD0
704 /* 0x0BD40BD0 is occupied by LOV_MAGIC_MIGRATE */
705 #define LOV_USER_MAGIC_SPECIFIC 0x0BD50BD0 /* for specific OSTs */
706 #define LOV_USER_MAGIC_COMP_V1 0x0BD60BD0
707 #define LOV_USER_MAGIC_FOREIGN 0x0BD70BD0
708 #define LOV_USER_MAGIC_SEL 0x0BD80BD0
710 #define LMV_USER_MAGIC 0x0CD30CD0 /* default lmv magic */
711 #define LMV_USER_MAGIC_V0 0x0CD20CD0 /* old default lmv magic*/
712 #define LMV_USER_MAGIC_SPECIFIC 0x0CD40CD0
714 #define LOV_PATTERN_NONE 0x000
715 #define LOV_PATTERN_RAID0 0x001
716 #define LOV_PATTERN_RAID1 0x002
717 #define LOV_PATTERN_MDT 0x100
718 #define LOV_PATTERN_OVERSTRIPING 0x200
719 #define LOV_PATTERN_FOREIGN 0x400
720 #define LOV_PATTERN_COMPRESS 0x800
722 #define LOV_PATTERN_F_MASK 0xffff0000
723 #define LOV_PATTERN_F_HOLE 0x40000000 /* there is hole in LOV EA */
724 #define LOV_PATTERN_F_RELEASED 0x80000000 /* HSM released file */
725 #define LOV_PATTERN_DEFAULT 0xffffffff
727 #define LOV_OFFSET_DEFAULT ((__u16)-1)
728 #define LMV_OFFSET_DEFAULT ((__u32)-1)
730 static inline bool lov_pattern_supported(__u32 pattern)
732 return (pattern & ~LOV_PATTERN_F_RELEASED) == LOV_PATTERN_RAID0 ||
733 (pattern & ~LOV_PATTERN_F_RELEASED) ==
734 (LOV_PATTERN_RAID0 | LOV_PATTERN_OVERSTRIPING) ||
735 (pattern & ~LOV_PATTERN_F_RELEASED) == LOV_PATTERN_MDT;
738 /* RELEASED and MDT patterns are not valid in many places, so rather than
739 * having many extra checks on lov_pattern_supported, we have this separate
740 * check for non-released, non-DOM components
742 static inline bool lov_pattern_supported_normal_comp(__u32 pattern)
744 return pattern == LOV_PATTERN_RAID0 ||
745 pattern == (LOV_PATTERN_RAID0 | LOV_PATTERN_OVERSTRIPING);
749 #define LOV_MAXPOOLNAME 15
750 #define LOV_POOLNAMEF "%.15s"
751 /* The poolname "ignore" is used to force a component creation without pool */
752 #define LOV_POOL_IGNORE "ignore"
753 /* The poolname "inherit" is used to force a component to inherit the pool from
754 * parent or root directory
756 #define LOV_POOL_INHERIT "inherit"
757 /* The poolname "none" is deprecated in 2.15 (same behavior as "inherit") */
758 #define LOV_POOL_NONE "none"
760 static inline bool lov_pool_is_ignored(const char *pool)
762 return pool && strncmp(pool, LOV_POOL_IGNORE, LOV_MAXPOOLNAME) == 0;
765 static inline bool lov_pool_is_inherited(const char *pool)
767 return pool && (strncmp(pool, LOV_POOL_INHERIT, LOV_MAXPOOLNAME) == 0 ||
768 strncmp(pool, LOV_POOL_NONE, LOV_MAXPOOLNAME) == 0);
771 static inline bool lov_pool_is_reserved(const char *pool)
773 return lov_pool_is_ignored(pool) || lov_pool_is_inherited(pool);
776 #define LOV_MIN_STRIPE_BITS 16 /* maximum PAGE_SIZE (ia64), power of 2 */
777 #define LOV_MIN_STRIPE_SIZE (1 << LOV_MIN_STRIPE_BITS)
778 #define LOV_MAX_STRIPE_COUNT_OLD 160
779 /* This calculation is crafted so that input of 4096 will result in 160
780 * which in turn is equal to old maximal stripe count.
781 * XXX: In fact this is too simpified for now, what it also need is to get
782 * ea_type argument to clearly know how much space each stripe consumes.
784 * The limit of 12 pages is somewhat arbitrary, but is a reasonably large
785 * allocation that is sufficient for the current generation of systems.
787 * (max buffer size - lov+rpc header) / sizeof(struct lov_ost_data_v1) */
788 #define LOV_MAX_STRIPE_COUNT 2000 /* ~((12 * 4096 - 256) / 24) */
789 #define LOV_ALL_STRIPES 0xffff /* only valid for directories */
790 #define LOV_V1_INSANE_STRIPE_COUNT 65532 /* maximum stripe count bz13933 */
792 #define XATTR_LUSTRE_PREFIX "lustre."
793 #define XATTR_LUSTRE_LOV XATTR_LUSTRE_PREFIX"lov"
795 /* Please update if XATTR_LUSTRE_LOV".set" groks more flags in the future */
796 #define allowed_lustre_lov(att) (strcmp((att), XATTR_LUSTRE_LOV".add") == 0 || \
797 strcmp((att), XATTR_LUSTRE_LOV".set") == 0 || \
798 strcmp((att), XATTR_LUSTRE_LOV".set.flags") == 0 || \
799 strcmp((att), XATTR_LUSTRE_LOV".del") == 0)
801 #define lov_user_ost_data lov_user_ost_data_v1
802 struct lov_user_ost_data_v1 { /* per-stripe data structure */
803 struct ost_id l_ost_oi; /* OST object ID */
804 __u32 l_ost_gen; /* generation of this OST index */
805 __u32 l_ost_idx; /* OST index in LOV */
806 } __attribute__((packed));
808 #define lov_user_md lov_user_md_v1
809 struct lov_user_md_v1 { /* LOV EA user data (host-endian) */
810 __u32 lmm_magic; /* magic number = LOV_USER_MAGIC_V1 */
811 __u32 lmm_pattern; /* LOV_PATTERN_RAID0, LOV_PATTERN_RAID1 */
812 struct ost_id lmm_oi; /* MDT parent inode id/seq (id/0 for 1.x) */
813 __u32 lmm_stripe_size; /* size of stripe in bytes */
814 __u16 lmm_stripe_count; /* num stripes in use for this object */
816 __u16 lmm_stripe_offset; /* starting stripe offset in
817 * lmm_objects, use when writing */
818 __u16 lmm_layout_gen; /* layout generation number
819 * used when reading */
821 struct lov_user_ost_data_v1 lmm_objects[0]; /* per-stripe data */
822 } __attribute__((packed, __may_alias__));
824 struct lov_user_md_v3 { /* LOV EA user data (host-endian) */
825 __u32 lmm_magic; /* magic number = LOV_USER_MAGIC_V3 */
826 __u32 lmm_pattern; /* LOV_PATTERN_RAID0, LOV_PATTERN_RAID1 */
827 struct ost_id lmm_oi; /* MDT parent inode id/seq (id/0 for 1.x) */
828 __u32 lmm_stripe_size; /* size of stripe in bytes */
829 __u16 lmm_stripe_count; /* num stripes in use for this object */
831 __u16 lmm_stripe_offset; /* starting stripe offset in
832 * lmm_objects, use when writing */
833 __u16 lmm_layout_gen; /* layout generation number
834 * used when reading */
836 char lmm_pool_name[LOV_MAXPOOLNAME + 1]; /* pool name */
837 struct lov_user_ost_data_v1 lmm_objects[0]; /* per-stripe data */
838 } __attribute__((packed, __may_alias__));
840 struct lov_foreign_md {
841 __u32 lfm_magic; /* magic number = LOV_MAGIC_FOREIGN */
842 __u32 lfm_length; /* length of lfm_value */
843 __u32 lfm_type; /* type, see LU_FOREIGN_TYPE_ */
844 __u32 lfm_flags; /* flags, type specific */
846 } __attribute__((packed));
848 #define foreign_size(lfm) (((struct lov_foreign_md *)lfm)->lfm_length + \
849 offsetof(struct lov_foreign_md, lfm_value))
851 #define foreign_size_le(lfm) \
852 (le32_to_cpu(((struct lov_foreign_md *)lfm)->lfm_length) + \
853 offsetof(struct lov_foreign_md, lfm_value))
856 * The stripe size fields are shared for the extension size storage, however
857 * the extension size is stored in KB, not bytes.
859 #define SEL_UNIT_SIZE 1024llu
864 } __attribute__((packed));
866 #define DEXT "[%#llx, %#llx)"
867 #define PEXT(ext) (unsigned long long)(ext)->e_start, (unsigned long long)(ext)->e_end
869 static inline bool lu_extent_is_overlapped(struct lu_extent *e1,
870 struct lu_extent *e2)
872 return e1->e_start < e2->e_end && e2->e_start < e1->e_end;
875 static inline bool lu_extent_is_whole(struct lu_extent *e)
877 return e->e_start == 0 && e->e_end == LUSTRE_EOF;
880 enum lov_comp_md_entry_flags {
881 LCME_FL_STALE = 0x00000001, /* FLR: stale data */
882 LCME_FL_PREF_RD = 0x00000002, /* FLR: preferred for reading */
883 LCME_FL_PREF_WR = 0x00000004, /* FLR: preferred for writing */
884 LCME_FL_PREF_RW = LCME_FL_PREF_RD | LCME_FL_PREF_WR,
885 LCME_FL_OFFLINE = 0x00000008, /* Not used */
886 LCME_FL_INIT = 0x00000010, /* instantiated */
887 LCME_FL_NOSYNC = 0x00000020, /* FLR: no sync for the mirror */
888 LCME_FL_EXTENSION = 0x00000040, /* extension comp, never init */
889 LCME_FL_PARITY = 0x00000080, /* EC: a parity code component */
890 LCME_FL_COMPRESS = 0x00000100, /* the component should be compressed */
891 LCME_FL_PARTIAL = 0x00000200, /* some chunks in the component are
894 LCME_FL_NOCOMPR = 0x00000400, /* the component should not be
897 LCME_FL_NEG = 0x80000000 /* used to indicate a negative flag,
898 * won't be stored on disk
902 #define LCME_KNOWN_FLAGS (LCME_FL_NEG | LCME_FL_INIT | LCME_FL_STALE | \
903 LCME_FL_PREF_RW | LCME_FL_NOSYNC | \
906 /* The component flags can be set by users at creation/modification time. */
907 #define LCME_USER_COMP_FLAGS (LCME_FL_PREF_RW | LCME_FL_NOSYNC | \
910 /* The mirror flags can be set by users at creation time. */
911 #define LCME_USER_MIRROR_FLAGS (LCME_FL_PREF_RW)
913 /* The allowed flags obtained from the client at component creation time. */
914 #define LCME_CL_COMP_FLAGS (LCME_USER_MIRROR_FLAGS | LCME_FL_EXTENSION)
916 /* The mirror flags sent by client */
917 #define LCME_MIRROR_FLAGS (LCME_FL_NOSYNC)
919 /* These flags have meaning when set in a default layout and will be inherited
920 * from the default/template layout set on a directory.
922 #define LCME_TEMPLATE_FLAGS (LCME_FL_PREF_RW | LCME_FL_NOSYNC | \
925 /* lcme_id can be specified as certain flags, and the the first
926 * bit of lcme_id is used to indicate that the ID is representing
927 * certain LCME_FL_* but not a real ID. Which implies we can have
928 * at most 31 flags (see LCME_FL_XXX). */
931 LCME_ID_MAX = 0x7FFFFFFF,
932 LCME_ID_ALL = 0xFFFFFFFF,
933 LCME_ID_NOT_ID = LCME_FL_NEG
936 /* layout version equals to lcme_id, except some bits have special meanings */
937 enum layout_version_flags {
938 /* layout version reaches the high water mark to be increased to
939 * circularly reuse the smallest value
941 LU_LAYOUT_HIGEN = 0x40000000,
942 /* the highest bit is used to mark if the file is being resynced */
943 LU_LAYOUT_RESYNC = 0x80000000,
946 #define LCME_ID_MASK LCME_ID_MAX
948 struct lov_comp_md_entry_v1 {
949 __u32 lcme_id; /* unique id of component */
950 __u32 lcme_flags; /* LCME_FL_XXX */
951 /* file extent for component. If it's an EC code component, its flags
952 * contains LCME_FL_PARITY, and its extent covers the same extent of
953 * its corresponding data component.
955 struct lu_extent lcme_extent;
956 __u32 lcme_offset; /* offset of component blob,
957 start from lov_comp_md_v1 */
958 __u32 lcme_size; /* size of component blob */
959 __u32 lcme_layout_gen;
960 __u64 lcme_timestamp; /* snapshot time if applicable*/
961 __u8 lcme_dstripe_count; /* data stripe count,
964 __u8 lcme_cstripe_count; /* code stripe count,
967 __u8 lcme_compr_type; /* compress type */
968 __u8 lcme_compr_lvl:4; /* compress level */
969 __u8 lcme_compr_chunk_log_bits:4;
970 /* chunk_size = 2^(16+chunk_log_bits)
971 * i.e. power-of-two multiple of 64KiB */
972 } __attribute__((packed));
974 #define SEQ_ID_MAX 0x0000FFFF
975 #define SEQ_ID_MASK SEQ_ID_MAX
976 /* bit 30:16 of lcme_id is used to store mirror id */
977 #define MIRROR_ID_MASK 0x7FFF0000
978 #define MIRROR_ID_NEG 0x8000
979 #define MIRROR_ID_SHIFT 16
981 static inline __u32 pflr_id(__u16 mirror_id, __u16 seqid)
983 return ((mirror_id << MIRROR_ID_SHIFT) & MIRROR_ID_MASK) | seqid;
986 static inline __u16 mirror_id_of(__u32 id)
988 return (id & MIRROR_ID_MASK) >> MIRROR_ID_SHIFT;
992 * on-disk data for lcm_flags. Valid if lcm_magic is LOV_MAGIC_COMP_V1.
994 enum lov_comp_md_flags {
995 /* the least 4 bits are used by FLR to record file state */
998 LCM_FL_WRITE_PENDING = 0x2,
999 LCM_FL_SYNC_PENDING = 0x3,
1000 LCM_FL_PCC_RDONLY = 0x8,
1001 LCM_FL_FLR_MASK = 0xB,
1004 struct lov_comp_md_v1 {
1005 __u32 lcm_magic; /* LOV_USER_MAGIC_COMP_V1 */
1006 __u32 lcm_size; /* overall size including this struct */
1007 __u32 lcm_layout_gen;
1009 __u16 lcm_entry_count;
1010 /* lcm_mirror_count stores the number of actual mirrors minus 1,
1011 * so that non-flr files will have value 0 meaning 1 mirror. */
1012 __u16 lcm_mirror_count;
1013 /* code components count, non-EC file contains 0 ec_count */
1015 __u8 lcm_padding3[1];
1016 __u16 lcm_padding1[2];
1018 struct lov_comp_md_entry_v1 lcm_entries[0];
1019 } __attribute__((packed));
1021 static inline __u32 lov_user_md_size(__u16 stripes, __u32 lmm_magic)
1023 if (stripes == (__u16)-1)
1026 if (lmm_magic == LOV_USER_MAGIC_V1)
1027 return sizeof(struct lov_user_md_v1) +
1028 stripes * sizeof(struct lov_user_ost_data_v1);
1029 return sizeof(struct lov_user_md_v3) +
1030 stripes * sizeof(struct lov_user_ost_data_v1);
1033 /* Compile with -D_LARGEFILE64_SOURCE or -D_GNU_SOURCE (or #define) to
1034 * use this. It is unsafe to #define those values in this header as it
1035 * is possible the application has already #included <sys/stat.h>. */
1036 #define lov_user_mds_data lov_user_mds_data_v2
1037 struct lov_user_mds_data_v1 {
1038 lstat_t lmd_st; /* MDS stat struct */
1039 struct lov_user_md_v1 lmd_lmm; /* LOV EA V1 user data */
1040 } __attribute__((packed));
1042 struct lov_user_mds_data_v2 {
1043 struct lu_fid lmd_fid; /* Lustre FID */
1044 lstatx_t lmd_stx; /* MDS statx struct */
1045 __u64 lmd_flags; /* MDS stat flags */
1046 __u32 lmd_lmmsize; /* LOV EA size */
1047 __u32 lmd_padding; /* unused */
1048 struct lov_user_md_v1 lmd_lmm; /* LOV EA user data */
1049 } __attribute__((packed));
1051 struct lmv_user_mds_data {
1052 struct lu_fid lum_fid;
1055 } __attribute__((packed, __may_alias__));
1057 enum lmv_hash_type {
1058 LMV_HASH_TYPE_UNKNOWN = 0, /* 0 is reserved for testing purpose */
1059 LMV_HASH_TYPE_ALL_CHARS = 1, /* simple sum of characters */
1060 LMV_HASH_TYPE_FNV_1A_64 = 2, /* reasonable non-cryptographic hash */
1061 LMV_HASH_TYPE_CRUSH = 3, /* double-hash to optimize migration */
1062 LMV_HASH_TYPE_CRUSH2 = 4, /* CRUSH with small fixes, LU-15692 */
1064 LMV_HASH_TYPE_DEFAULT = LMV_HASH_TYPE_FNV_1A_64
1067 static __attribute__((unused)) const char *mdt_hash_name[] = {
1076 /* Right now only the lower part(0-16bits) of lmv_hash_type is being used,
1077 * and the higher part will be the flag to indicate the status of object,
1078 * for example the object is being migrated. And the hash function
1079 * might be interpreted differently with different flags. */
1080 #define LMV_HASH_TYPE_MASK 0x0000ffff
1082 static inline bool lmv_is_known_hash_type(__u32 type)
1084 return (type & LMV_HASH_TYPE_MASK) > LMV_HASH_TYPE_UNKNOWN &&
1085 (type & LMV_HASH_TYPE_MASK) < LMV_HASH_TYPE_MAX;
1088 /* This flag indicates that overstriping (>1 stripe per MDT) is desired */
1089 #define LMV_HASH_FLAG_OVERSTRIPED 0x01000000
1090 /* fixed layout, such directories won't split automatically */
1091 /* NB, update LMV_HASH_FLAG_KNOWN when adding new flag */
1092 #define LMV_HASH_FLAG_FIXED 0x02000000
1093 #define LMV_HASH_FLAG_MERGE 0x04000000
1094 #define LMV_HASH_FLAG_SPLIT 0x08000000
1096 /* The striped directory has ever lost its master LMV EA, then LFSCK
1097 * re-generated it. This flag is used to indicate such case. It is an
1099 #define LMV_HASH_FLAG_LOST_LMV 0x10000000
1101 #define LMV_HASH_FLAG_BAD_TYPE 0x20000000
1102 #define LMV_HASH_FLAG_MIGRATION 0x80000000
1104 #define LMV_HASH_FLAG_LAYOUT_CHANGE \
1105 (LMV_HASH_FLAG_MIGRATION | LMV_HASH_FLAG_SPLIT | LMV_HASH_FLAG_MERGE)
1107 #define LMV_HASH_FLAG_KNOWN 0xbe000000
1109 /* both SPLIT and MIGRATION are set for directory split */
1110 static inline bool lmv_hash_is_splitting(__u32 hash)
1112 return (hash & LMV_HASH_FLAG_LAYOUT_CHANGE) ==
1113 (LMV_HASH_FLAG_SPLIT | LMV_HASH_FLAG_MIGRATION);
1116 /* both MERGE and MIGRATION are set for directory merge */
1117 static inline bool lmv_hash_is_merging(__u32 hash)
1119 return (hash & LMV_HASH_FLAG_LAYOUT_CHANGE) ==
1120 (LMV_HASH_FLAG_MERGE | LMV_HASH_FLAG_MIGRATION);
1123 /* only MIGRATION is set for directory migration */
1124 static inline bool lmv_hash_is_migrating(__u32 hash)
1126 return (hash & LMV_HASH_FLAG_LAYOUT_CHANGE) == LMV_HASH_FLAG_MIGRATION;
1129 static inline bool lmv_hash_is_restriping(__u32 hash)
1131 return lmv_hash_is_splitting(hash) || lmv_hash_is_merging(hash);
1134 static inline bool lmv_hash_is_layout_changing(__u32 hash)
1136 return lmv_hash_is_splitting(hash) || lmv_hash_is_merging(hash) ||
1137 lmv_hash_is_migrating(hash);
1140 struct lustre_foreign_type {
1142 const char *lft_name;
1146 * LOV/LMV foreign types
1148 enum lustre_foreign_types {
1149 LU_FOREIGN_TYPE_NONE = 0,
1150 /* HSM copytool lhsm_posix */
1151 LU_FOREIGN_TYPE_POSIX = 1,
1152 /* Used for PCC-RW. PCCRW components are local to a single archive. */
1153 LU_FOREIGN_TYPE_PCCRW = 2,
1154 /* Used for PCC-RO. PCCRO components may be shared between archives. */
1155 LU_FOREIGN_TYPE_PCCRO = 3,
1157 LU_FOREIGN_TYPE_S3 = 4,
1159 LU_FOREIGN_TYPE_SYMLINK = 0xda05,
1160 /* must be the max/last one */
1161 LU_FOREIGN_TYPE_UNKNOWN = 0xffffffff,
1164 extern struct lustre_foreign_type lu_foreign_types[];
1166 /* Got this according to how get LOV_MAX_STRIPE_COUNT, see above,
1167 * (max buffer size - lmv+rpc header) / sizeof(struct lmv_user_mds_data) */
1168 #define LMV_MAX_STRIPE_COUNT 2000 /* ((12 * 4096 - 256) / 24) */
1169 #define lmv_user_md lmv_user_md_v1
1170 struct lmv_user_md_v1 {
1171 __u32 lum_magic; /* must be the first field */
1172 __u32 lum_stripe_count; /* dirstripe count */
1173 __u32 lum_stripe_offset; /* MDT idx for default dirstripe */
1174 __u32 lum_hash_type; /* Dir stripe policy */
1175 __u32 lum_type; /* LMV type: default */
1176 __u8 lum_max_inherit; /* inherit depth of default LMV */
1177 __u8 lum_max_inherit_rr; /* inherit depth of default LMV to round-robin mkdir */
1181 char lum_pool_name[LOV_MAXPOOLNAME + 1];
1182 struct lmv_user_mds_data lum_objects[0];
1183 } __attribute__((packed));
1185 static inline __u32 lmv_foreign_to_md_stripes(__u32 size)
1187 if (size <= sizeof(struct lmv_user_md))
1190 size -= sizeof(struct lmv_user_md);
1191 return (size + sizeof(struct lmv_user_mds_data) - 1) /
1192 sizeof(struct lmv_user_mds_data);
1196 * NB, historically default layout didn't set type, but use XATTR name to differ
1197 * from normal layout, for backward compatibility, define LMV_TYPE_DEFAULT 0x0,
1198 * and still use the same method.
1201 LMV_TYPE_DEFAULT = 0x0000,
1204 /* lum_max_inherit will be decreased by 1 after each inheritance if it's not
1205 * LMV_INHERIT_UNLIMITED or > LMV_INHERIT_MAX.
1208 /* for historical reason, 0 means unlimited inheritance */
1209 LMV_INHERIT_UNLIMITED = 0,
1210 /* unlimited lum_max_inherit by default for plain stripe (0 or 1) */
1211 LMV_INHERIT_DEFAULT_PLAIN = LMV_INHERIT_UNLIMITED,
1212 /* not inherit any more */
1213 LMV_INHERIT_END = 1,
1214 /* for multiple stripes, the default lum_max_inherit is 3 */
1215 LMV_INHERIT_DEFAULT_STRIPED = 3,
1216 /* max inherit depth */
1217 LMV_INHERIT_MAX = 250,
1218 /* [251, 254] are reserved */
1219 /* not set, or when inherit depth goes beyond end, */
1220 LMV_INHERIT_NONE = 255,
1224 /* not set, or when inherit_rr depth goes beyond end, */
1225 LMV_INHERIT_RR_NONE = 0,
1226 /* disable lum_max_inherit_rr by default */
1227 LMV_INHERIT_RR_DEFAULT = LMV_INHERIT_RR_NONE,
1228 /* not inherit any more */
1229 LMV_INHERIT_RR_END = 1,
1230 /* default inherit_rr of ROOT */
1231 LMV_INHERIT_RR_ROOT = 3,
1232 /* max inherit depth */
1233 LMV_INHERIT_RR_MAX = 250,
1234 /* [251, 254] are reserved */
1235 /* unlimited inheritance */
1236 LMV_INHERIT_RR_UNLIMITED = 255,
1239 static inline int lmv_user_md_size(int stripes, int lmm_magic)
1241 int size = sizeof(struct lmv_user_md);
1243 if (lmm_magic == LMV_USER_MAGIC_SPECIFIC)
1244 size += stripes * sizeof(struct lmv_user_mds_data);
1249 struct ll_recreate_obj {
1255 __u64 id; /* holds object id */
1256 __u32 generation; /* holds object generation */
1257 __u32 f_type; /* holds object type or stripe idx when passing it to
1258 * OST for saving into EA. */
1263 char uuid[UUID_MAX];
1266 static inline bool obd_uuid_equals(const struct obd_uuid *u1,
1267 const struct obd_uuid *u2)
1269 return strcmp((char *)u1->uuid, (char *)u2->uuid) == 0;
1272 static inline int obd_uuid_empty(struct obd_uuid *uuid)
1274 return uuid->uuid[0] == '\0';
1277 static inline void obd_str2uuid(struct obd_uuid *uuid, const char *tmp)
1279 strncpy((char *)uuid->uuid, tmp, sizeof(*uuid));
1280 uuid->uuid[sizeof(*uuid) - 1] = '\0';
1283 /* For printf's only, make sure uuid is terminated */
1284 static inline char *obd_uuid2str(const struct obd_uuid *uuid)
1289 if (uuid->uuid[sizeof(*uuid) - 1] != '\0') {
1290 /* Obviously not safe, but for printfs, no real harm done...
1291 we're always null-terminated, even in a race. */
1292 static char temp[sizeof(*uuid->uuid)];
1294 memcpy(temp, uuid->uuid, sizeof(*uuid->uuid) - 1);
1295 temp[sizeof(*uuid->uuid) - 1] = '\0';
1299 return (char *)(uuid->uuid);
1302 #define LUSTRE_MAXFSNAME 8
1303 #define LUSTRE_MAXINSTANCE 16
1305 /* Extract fsname from uuid (or target name) of a target
1306 e.g. (myfs-OST0007_UUID -> myfs)
1307 see also deuuidify. */
1308 static inline void obd_uuid2fsname(char *buf, char *uuid, int buflen)
1312 strncpy(buf, uuid, buflen - 1);
1313 buf[buflen - 1] = '\0';
1314 p = strrchr(buf, '-');
1319 /* printf display format for Lustre FIDs
1320 * usage: printf("file FID is "DFID"\n", PFID(fid)); */
1321 #define FID_NOBRACE_LEN 40
1322 #define FID_LEN (FID_NOBRACE_LEN + 2)
1323 #define DFID_NOBRACE "%#llx:0x%x:0x%x"
1324 #define DFID "[" DFID_NOBRACE "]"
1325 #define PFID(fid) (unsigned long long)(fid)->f_seq, (fid)->f_oid, (fid)->f_ver
1327 /* scanf input parse format for fids in DFID_NOBRACE format
1328 * Need to strip '[' from DFID format first or use "["SFID"]" at caller.
1329 * usage: sscanf(fidstr, SFID, RFID(&fid)); */
1330 #define SFID "0x%llx:0x%x:0x%x"
1331 #define RFID(fid) (unsigned long long *)&((fid)->f_seq), &((fid)->f_oid), &((fid)->f_ver)
1332 #define PLOGID(logid) (unsigned long long)(logid)->lgl_oi.oi.oi_seq, (__u32)(logid)->lgl_oi.oi.oi_id, 0
1334 /********* Quotas **********/
1336 /* From linux/fs/quota/quota.c */
1337 static inline __u64 toqb(__kernel_size_t space)
1339 return (space + QIF_DQBLKSIZE - 1) >> QIF_DQBLKSIZE_BITS;
1342 #define Q_QUOTACHECK 0x800100 /* deprecated as of 2.4 */
1343 #define Q_INITQUOTA 0x800101 /* deprecated as of 2.4 */
1344 #define Q_GETOINFO 0x800102 /* get obd quota info */
1345 #define Q_GETOQUOTA 0x800103 /* get obd quotas */
1346 #define Q_FINVALIDATE 0x800104 /* deprecated as of 2.4 */
1348 /* these must be explicitly translated into linux Q_* in ll_dir_ioctl */
1349 #define LUSTRE_Q_QUOTAON 0x800002 /* deprecated as of 2.4 */
1350 #define LUSTRE_Q_QUOTAOFF 0x800003 /* deprecated as of 2.4 */
1351 #define LUSTRE_Q_GETINFO 0x800005 /* get information about quota files */
1352 #define LUSTRE_Q_SETINFO 0x800006 /* set information about quota files */
1353 #define LUSTRE_Q_GETQUOTA 0x800007 /* get user quota structure */
1354 #define LUSTRE_Q_SETQUOTA 0x800008 /* set user quota structure */
1355 /* lustre-specific control commands */
1356 #define LUSTRE_Q_INVALIDATE 0x80000b /* deprecated as of 2.4 */
1357 #define LUSTRE_Q_FINVALIDATE 0x80000c /* deprecated as of 2.4 */
1358 #define LUSTRE_Q_GETDEFAULT 0x80000d /* get default quota */
1359 #define LUSTRE_Q_SETDEFAULT 0x80000e /* set default quota */
1360 #define LUSTRE_Q_GETQUOTAPOOL 0x80000f /* get user pool quota */
1361 #define LUSTRE_Q_SETQUOTAPOOL 0x800010 /* set user pool quota */
1362 #define LUSTRE_Q_GETINFOPOOL 0x800011 /* get pool quota info */
1363 #define LUSTRE_Q_SETINFOPOOL 0x800012 /* set pool quota info */
1364 #define LUSTRE_Q_GETDEFAULT_POOL 0x800013 /* get default pool quota*/
1365 #define LUSTRE_Q_SETDEFAULT_POOL 0x800014 /* set default pool quota */
1366 #define LUSTRE_Q_DELETEQID 0x800015 /* delete quota ID */
1367 #define LUSTRE_Q_RESETQID 0x800016 /* reset quota ID */
1368 /* In the current Lustre implementation, the grace time is either the time
1369 * or the timestamp to be used after some quota ID exceeds the soft limt,
1370 * 48 bits should be enough, its high 16 bits can be used as quota flags.
1372 #define LQUOTA_GRACE_BITS 48
1373 #define LQUOTA_GRACE_MASK ((1ULL << LQUOTA_GRACE_BITS) - 1)
1374 #define LQUOTA_GRACE_MAX LQUOTA_GRACE_MASK
1375 #define LQUOTA_GRACE(t) (t & LQUOTA_GRACE_MASK)
1376 #define LQUOTA_FLAG(t) (t >> LQUOTA_GRACE_BITS)
1377 #define LQUOTA_GRACE_FLAG(t, f) ((__u64)t | (__u64)f << LQUOTA_GRACE_BITS)
1379 /* special grace time, only notify the user when its quota is over soft limit
1380 * but doesn't block new writes until the hard limit is reached. */
1381 #define NOTIFY_GRACE "notify"
1382 #define NOTIFY_GRACE_TIME LQUOTA_GRACE_MASK
1384 /* different quota flags */
1386 /* the default quota flag, the corresponding quota ID will use the default
1387 * quota setting, the hardlimit and softlimit of its quota record in the global
1388 * quota file will be set to 0, the low 48 bits of the grace will be set to 0
1389 * and high 16 bits will contain this flag (see above comment).
1391 #define LQUOTA_FLAG_DEFAULT 0x0001
1392 #define LQUOTA_FLAG_DELETED 0x0002
1393 #define LQUOTA_FLAG_RESET 0x0004
1395 #define LUSTRE_Q_CMD_IS_POOL(cmd) \
1396 (cmd == LUSTRE_Q_GETQUOTAPOOL || \
1397 cmd == LUSTRE_Q_SETQUOTAPOOL || \
1398 cmd == LUSTRE_Q_SETINFOPOOL || \
1399 cmd == LUSTRE_Q_GETINFOPOOL || \
1400 cmd == LUSTRE_Q_SETDEFAULT_POOL || \
1401 cmd == LUSTRE_Q_GETDEFAULT_POOL)
1403 #define ALLQUOTA 255 /* set all quota */
1404 static inline const char *qtype_name(int qtype)
1417 #define IDENTITY_DOWNCALL_MAGIC 0x6d6dd629
1420 #define N_PERMS_MAX 64
1422 struct perm_downcall_data {
1428 struct identity_downcall_data {
1435 struct perm_downcall_data idd_perms[N_PERMS_MAX];
1436 __u32 idd_groups[0];
1439 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 16, 53, 0)
1440 /* old interface struct is deprecated in 2.14 */
1441 #define SEPOL_DOWNCALL_MAGIC_OLD 0x8b8bb842
1442 struct sepol_downcall_data_old {
1444 __s64 sdd_sepol_mtime;
1445 __u16 sdd_sepol_len;
1450 #define SEPOL_DOWNCALL_MAGIC 0x8b8bb843
1451 struct sepol_downcall_data {
1453 __u16 sdd_sepol_len;
1455 __s64 sdd_sepol_mtime;
1459 #ifdef NEED_QUOTA_DEFS
1461 #define QIF_BLIMITS 1
1463 #define QIF_ILIMITS 4
1464 #define QIF_INODES 8
1465 #define QIF_BTIME 16
1466 #define QIF_ITIME 32
1467 #define QIF_LIMITS (QIF_BLIMITS | QIF_ILIMITS)
1468 #define QIF_USAGE (QIF_SPACE | QIF_INODES)
1469 #define QIF_TIMES (QIF_BTIME | QIF_ITIME)
1470 #define QIF_ALL (QIF_LIMITS | QIF_USAGE | QIF_TIMES)
1473 #endif /* !__KERNEL__ */
1475 /* lustre volatile file support
1476 * file name header: ".^L^S^T^R:volatile"
1478 #define LUSTRE_VOLATILE_HDR ".\x0c\x13\x14\x12:VOLATILE"
1479 #define LUSTRE_VOLATILE_HDR_LEN 14
1481 enum lustre_quota_version {
1485 /* XXX: same as if_dqinfo struct in kernel */
1493 /* XXX: same as if_dqblk struct in kernel, plus one padding */
1495 __u64 dqb_bhardlimit; /* kbytes unit */
1496 __u64 dqb_bsoftlimit; /* kbytes unit */
1497 __u64 dqb_curspace; /* bytes unit */
1498 __u64 dqb_ihardlimit;
1499 __u64 dqb_isoftlimit;
1500 __u64 dqb_curinodes;
1514 struct if_quotactl {
1521 struct obd_dqinfo qc_dqinfo;
1522 struct obd_dqblk qc_dqblk;
1524 struct obd_uuid obd_uuid;
1528 /* swap layout flags */
1529 #define SWAP_LAYOUTS_CHECK_DV1 (1 << 0)
1530 #define SWAP_LAYOUTS_CHECK_DV2 (1 << 1)
1531 #define SWAP_LAYOUTS_KEEP_MTIME (1 << 2)
1532 #define SWAP_LAYOUTS_KEEP_ATIME (1 << 3)
1533 #define SWAP_LAYOUTS_CLOSE (1 << 4)
1535 /* Swap XATTR_NAME_HSM as well, only on the MDT so far */
1536 #define SWAP_LAYOUTS_MDS_HSM (1 << 31)
1537 struct lustre_swap_layouts {
1545 /** Bit-mask of valid attributes */
1546 /* The LA_* flags are written to disk as part of the ChangeLog records
1547 * so they are part of the on-disk and network protocol, and cannot be changed.
1548 * Only the first 12 bits are currently saved.
1551 LA_ATIME = 1 << 0, /* 0x00001 */
1552 LA_MTIME = 1 << 1, /* 0x00002 */
1553 LA_CTIME = 1 << 2, /* 0x00004 */
1554 LA_SIZE = 1 << 3, /* 0x00008 */
1555 LA_MODE = 1 << 4, /* 0x00010 */
1556 LA_UID = 1 << 5, /* 0x00020 */
1557 LA_GID = 1 << 6, /* 0x00040 */
1558 LA_BLOCKS = 1 << 7, /* 0x00080 */
1559 LA_TYPE = 1 << 8, /* 0x00100 */
1560 LA_FLAGS = 1 << 9, /* 0x00200 */
1561 LA_NLINK = 1 << 10, /* 0x00400 */
1562 LA_RDEV = 1 << 11, /* 0x00800 */
1563 LA_BLKSIZE = 1 << 12, /* 0x01000 */
1564 LA_KILL_SUID = 1 << 13, /* 0x02000 */
1565 LA_KILL_SGID = 1 << 14, /* 0x04000 */
1566 LA_PROJID = 1 << 15, /* 0x08000 */
1567 LA_LAYOUT_VERSION = 1 << 16, /* 0x10000 */
1568 LA_LSIZE = 1 << 17, /* 0x20000 */
1569 LA_LBLOCKS = 1 << 18, /* 0x40000 */
1570 LA_BTIME = 1 << 19, /* 0x80000 */
1572 * Attributes must be transmitted to OST objects
1574 LA_REMOTE_ATTR_SET = (LA_UID | LA_GID | LA_PROJID | LA_LAYOUT_VERSION)
1577 #define MDS_FMODE_READ 00000001
1578 #define MDS_FMODE_WRITE 00000002
1580 #define MDS_FMODE_CLOSED 00000000
1581 #define MDS_FMODE_EXEC 00000004
1582 /* MDS_FMODE_EPOCH 01000000 obsolete since 2.8.0 */
1583 /* MDS_FMODE_TRUNC 02000000 obsolete since 2.8.0 */
1584 /* MDS_FMODE_SOM 04000000 obsolete since 2.8.0 */
1586 #define MDS_OPEN_CREATED 00000010
1587 /* MDS_OPEN_CROSS 00000020 obsolete in 2.12, internal use only */
1589 #define MDS_OPEN_CREAT 00000100
1590 #define MDS_OPEN_EXCL 00000200
1591 #define MDS_OPEN_TRUNC 00001000
1592 #define MDS_OPEN_APPEND 00002000
1593 #define MDS_OPEN_SYNC 00010000
1594 #define MDS_OPEN_DIRECTORY 00200000
1596 #define MDS_OPEN_BY_FID 040000000 /* open_by_fid for known object */
1597 #define MDS_OPEN_DELAY_CREATE 0100000000 /* delay initial object create */
1598 #define MDS_OPEN_OWNEROVERRIDE 0200000000 /* NFSD rw-reopen ro file for owner */
1599 #define MDS_OPEN_JOIN_FILE 0400000000 /* open for join file.
1600 * We do not support JOIN FILE
1601 * anymore, reserve this flags
1602 * just for preventing such bit
1605 #define MDS_OPEN_LOCK 04000000000 /* This open requires open lock */
1606 #define MDS_OPEN_HAS_EA 010000000000 /* specify object create pattern */
1607 #define MDS_OPEN_HAS_OBJS 020000000000 /* Just set the EA the obj exist */
1608 #define MDS_OPEN_NORESTORE 0100000000000ULL /* Do not restore file at open */
1609 #define MDS_OPEN_NEWSTRIPE 0200000000000ULL /* New stripe needed (restripe or
1611 #define MDS_OPEN_VOLATILE 0400000000000ULL /* File is volatile = created
1613 #define MDS_OPEN_LEASE 01000000000000ULL /* Open the file and grant lease
1614 * delegation, succeed if it's not
1615 * being opened with conflict mode.
1617 #define MDS_OPEN_RELEASE 02000000000000ULL /* Open the file for HSM release */
1619 #define MDS_OPEN_RESYNC 04000000000000ULL /* FLR: file resync */
1620 #define MDS_OPEN_PCC 010000000000000ULL /* PCC: auto RW-PCC cache attach
1621 * for newly created file */
1622 #define MDS_OP_WITH_FID 020000000000000ULL /* operation carried out by FID */
1623 #define MDS_OPEN_DEFAULT_LMV 040000000000000ULL /* open fetches default LMV */
1625 /* lustre internal open flags, which should not be set from user space */
1626 #define MDS_OPEN_FL_INTERNAL (MDS_OPEN_HAS_EA | MDS_OPEN_HAS_OBJS | \
1627 MDS_OPEN_OWNEROVERRIDE | MDS_OPEN_LOCK | \
1628 MDS_OPEN_BY_FID | MDS_OPEN_LEASE | \
1629 MDS_OPEN_RELEASE | MDS_OPEN_RESYNC | \
1630 MDS_OPEN_PCC | MDS_OP_WITH_FID | \
1631 MDS_OPEN_DEFAULT_LMV)
1634 /********* Changelogs **********/
1635 /** Changelog record types */
1636 enum changelog_rec_type {
1639 CL_CREATE = 1, /* namespace */
1640 CL_MKDIR = 2, /* namespace */
1641 CL_HARDLINK = 3, /* namespace */
1642 CL_SOFTLINK = 4, /* namespace */
1643 CL_MKNOD = 5, /* namespace */
1644 CL_UNLINK = 6, /* namespace */
1645 CL_RMDIR = 7, /* namespace */
1646 CL_RENAME = 8, /* namespace */
1647 CL_EXT = 9, /* namespace extended record (2nd half of rename) */
1648 CL_OPEN = 10, /* not currently used */
1649 CL_CLOSE = 11, /* may be written to log only with mtime change */
1650 CL_LAYOUT = 12, /* file layout/striping modified */
1654 CL_XATTR = CL_SETXATTR, /* Deprecated name */
1655 CL_HSM = 16, /* HSM specific events, see flags */
1656 CL_MTIME = 17, /* Precedence: setattr > mtime > ctime > atime */
1660 CL_FLRW = 21, /* FLR: file was firstly written */
1661 CL_RESYNC = 22, /* FLR: file was resync-ed */
1663 CL_DN_OPEN = 24, /* denied open */
1667 static inline const char *changelog_type2str(int type) {
1668 static const char *const changelog_str[] = {
1669 "MARK", "CREAT", "MKDIR", "HLINK", "SLINK", "MKNOD", "UNLNK",
1670 "RMDIR", "RENME", "RNMTO", "OPEN", "CLOSE", "LYOUT", "TRUNC",
1671 "SATTR", "XATTR", "HSM", "MTIME", "CTIME", "ATIME", "MIGRT",
1672 "FLRW", "RESYNC","GXATR", "NOPEN",
1675 if (type >= 0 && type < CL_LAST)
1676 return changelog_str[type];
1680 /* 12 bits of per-record data can be stored in the bottom of the flags */
1681 #define CLF_FLAGSHIFT 12
1682 enum changelog_rec_flags {
1683 CLF_VERSION = 0x1000,
1684 CLF_RENAME = 0x2000,
1686 CLF_EXTRA_FLAGS = 0x8000,
1687 CLF_SUPPORTED = CLF_VERSION | CLF_RENAME | CLF_JOBID |
1689 CLF_FLAGMASK = (1U << CLF_FLAGSHIFT) - 1,
1690 CLF_VERMASK = ~CLF_FLAGMASK,
1694 /* Anything under the flagmask may be per-type (if desired) */
1695 /* Flags for unlink */
1696 #define CLF_UNLINK_LAST 0x0001 /* Unlink of last hardlink */
1697 #define CLF_UNLINK_HSM_EXISTS 0x0002 /* File has something in HSM */
1698 /* HSM cleaning needed */
1699 /* Flags for rename */
1700 #define CLF_RENAME_LAST 0x0001 /* rename unlink last hardlink
1702 #define CLF_RENAME_LAST_EXISTS 0x0002 /* rename unlink last hardlink of target
1703 * has an archive in backend */
1706 /* 12b used (from high weight to low weight):
1711 #define CLF_HSM_ERR_L 0 /* HSM return code, 7 bits */
1712 #define CLF_HSM_ERR_H 6
1713 #define CLF_HSM_EVENT_L 7 /* HSM event, 3 bits, see enum hsm_event */
1714 #define CLF_HSM_EVENT_H 9
1715 #define CLF_HSM_FLAG_L 10 /* HSM flags, 2 bits, 1 used, 1 spare */
1716 #define CLF_HSM_FLAG_H 11
1717 #define CLF_HSM_SPARE_L 12 /* 4 spare bits */
1718 #define CLF_HSM_SPARE_H 15
1719 #define CLF_HSM_LAST 15
1721 /* Remove bits higher than _h, then extract the value
1722 * between _h and _l by shifting lower weigth to bit 0. */
1723 #define CLF_GET_BITS(_b, _h, _l) (((_b << (CLF_HSM_LAST - _h)) & 0xFFFF) \
1724 >> (CLF_HSM_LAST - _h + _l))
1726 #define CLF_HSM_SUCCESS 0x00
1727 #define CLF_HSM_MAXERROR 0x7E
1728 #define CLF_HSM_ERROVERFLOW 0x7F
1730 #define CLF_HSM_DIRTY 1 /* file is dirty after HSM request end */
1732 /* 3 bits field => 8 values allowed */
1744 static inline enum hsm_event hsm_get_cl_event(__u16 flags)
1746 return (enum hsm_event)CLF_GET_BITS(flags, CLF_HSM_EVENT_H,
1750 static inline void hsm_set_cl_event(enum changelog_rec_flags *clf_flags,
1753 *clf_flags = (enum changelog_rec_flags)
1754 (*clf_flags | (he << CLF_HSM_EVENT_L));
1757 static inline __u16 hsm_get_cl_flags(enum changelog_rec_flags clf_flags)
1759 return CLF_GET_BITS(clf_flags, CLF_HSM_FLAG_H, CLF_HSM_FLAG_L);
1762 static inline void hsm_set_cl_flags(enum changelog_rec_flags *clf_flags,
1765 *clf_flags = (enum changelog_rec_flags)
1766 (*clf_flags | (bits << CLF_HSM_FLAG_L));
1769 static inline int hsm_get_cl_error(enum changelog_rec_flags clf_flags)
1771 return CLF_GET_BITS(clf_flags, CLF_HSM_ERR_H, CLF_HSM_ERR_L);
1774 static inline int hsm_set_cl_error(enum changelog_rec_flags *clf_flags,
1777 /* In case a negative error is given */
1780 if (error > CLF_HSM_MAXERROR)
1781 error = CLF_HSM_ERROVERFLOW;
1783 *clf_flags = (enum changelog_rec_flags)
1784 (*clf_flags | (error << CLF_HSM_ERR_L));
1786 return error == CLF_HSM_ERROVERFLOW ? -EOVERFLOW : 0;
1789 enum changelog_rec_extra_flags {
1791 CLFE_UIDGID = 0x0001,
1794 CLFE_XATTR = 0x0008,
1795 CLFE_SUPPORTED = CLFE_UIDGID | CLFE_NID | CLFE_OPEN | CLFE_XATTR
1798 enum changelog_send_flag {
1799 /* Use changelog follow mode: llapi_changelog_recv() will not stop at
1800 * the end of records and wait for new records to be generated.
1802 CHANGELOG_FLAG_FOLLOW = 0x01,
1803 /* Deprecated since Lustre 2.10 */
1804 CHANGELOG_FLAG_BLOCK = 0x02,
1805 /* Pack jobid into the changelog records if available. */
1806 CHANGELOG_FLAG_JOBID = 0x04,
1807 /* Pack additional flag bits into the changelog record */
1808 CHANGELOG_FLAG_EXTRA_FLAGS = 0x08,
1811 enum changelog_send_extra_flag {
1812 /* Pack uid/gid into the changelog record */
1813 CHANGELOG_EXTRA_FLAG_UIDGID = 0x01,
1814 /* Pack nid into the changelog record */
1815 CHANGELOG_EXTRA_FLAG_NID = 0x02,
1816 /* Pack open mode into the changelog record */
1817 CHANGELOG_EXTRA_FLAG_OMODE = 0x04,
1818 /* Pack xattr name into the changelog record */
1819 CHANGELOG_EXTRA_FLAG_XATTR = 0x08,
1822 #define CR_MAXSIZE __ALIGN_KERNEL(2 * NAME_MAX + 2 + \
1823 changelog_rec_offset(CLF_SUPPORTED, \
1826 /* 31 usable bytes string + null terminator. */
1827 #define LUSTRE_JOBID_SIZE 32
1829 /* This is the minimal changelog record. It can contain extensions
1830 * such as rename fields or process jobid. Its exact content is described
1831 * by the cr_flags and cr_extra_flags.
1833 * Extensions are packed in the same order as their corresponding flags,
1834 * then in the same order as their corresponding extra flags.
1836 struct changelog_rec {
1838 __u16 cr_flags; /**< \a changelog_rec_flags */
1839 __u32 cr_type; /**< \a changelog_rec_type */
1840 __u64 cr_index; /**< changelog record number */
1841 __u64 cr_prev; /**< last index for this target fid */
1844 struct lu_fid cr_tfid; /**< target fid */
1845 __u32 cr_markerflags; /**< CL_MARK flags */
1847 struct lu_fid cr_pfid; /**< parent fid */
1848 } __attribute__ ((packed));
1850 /* Changelog extension for RENAME. */
1851 struct changelog_ext_rename {
1852 struct lu_fid cr_sfid; /**< source fid, or zero */
1853 struct lu_fid cr_spfid; /**< source parent fid, or zero */
1856 /* Changelog extension to include JOBID. */
1857 struct changelog_ext_jobid {
1858 char cr_jobid[LUSTRE_JOBID_SIZE]; /**< zero-terminated string. */
1861 /* Changelog extension to include additional flags. */
1862 struct changelog_ext_extra_flags {
1863 __u64 cr_extra_flags; /* Additional CLFE_* flags */
1866 /* Changelog extra extension to include UID/GID. */
1867 struct changelog_ext_uidgid {
1872 /* Changelog extra extension to include NID. */
1873 struct changelog_ext_nid {
1874 /* have __u64 instead of lnet_nid_t type for use by client api */
1876 /* for use when IPv6 support is added */
1881 /* Changelog extra extension to include low 32 bits of MDS_OPEN_* flags. */
1882 struct changelog_ext_openmode {
1886 /* Changelog extra extension to include xattr */
1887 struct changelog_ext_xattr {
1888 char cr_xattr[XATTR_NAME_MAX + 1]; /**< zero-terminated string. */
1891 static inline struct changelog_ext_extra_flags *changelog_rec_extra_flags(
1892 const struct changelog_rec *rec);
1894 static inline __kernel_size_t changelog_rec_offset(enum changelog_rec_flags crf,
1895 enum changelog_rec_extra_flags cref)
1897 __kernel_size_t size = sizeof(struct changelog_rec);
1899 if (crf & CLF_RENAME)
1900 size += sizeof(struct changelog_ext_rename);
1902 if (crf & CLF_JOBID)
1903 size += sizeof(struct changelog_ext_jobid);
1905 if (crf & CLF_EXTRA_FLAGS) {
1906 size += sizeof(struct changelog_ext_extra_flags);
1907 if (cref & CLFE_UIDGID)
1908 size += sizeof(struct changelog_ext_uidgid);
1909 if (cref & CLFE_NID)
1910 size += sizeof(struct changelog_ext_nid);
1911 if (cref & CLFE_OPEN)
1912 size += sizeof(struct changelog_ext_openmode);
1913 if (cref & CLFE_XATTR)
1914 size += sizeof(struct changelog_ext_xattr);
1920 static inline __kernel_size_t changelog_rec_size(const struct changelog_rec *rec)
1922 enum changelog_rec_extra_flags cref = CLFE_INVALID;
1924 if (rec->cr_flags & CLF_EXTRA_FLAGS)
1925 cref = (enum changelog_rec_extra_flags)
1926 changelog_rec_extra_flags(rec)->cr_extra_flags;
1928 return changelog_rec_offset(
1929 (enum changelog_rec_flags)rec->cr_flags, cref);
1932 static inline __kernel_size_t changelog_rec_varsize(const struct changelog_rec *rec)
1934 return changelog_rec_size(rec) - sizeof(*rec) + rec->cr_namelen;
1938 struct changelog_ext_rename *changelog_rec_rename(const struct changelog_rec *rec)
1940 enum changelog_rec_flags crf = (enum changelog_rec_flags)
1941 (rec->cr_flags & CLF_VERSION);
1943 return (struct changelog_ext_rename *)((char *)rec +
1944 changelog_rec_offset(crf,
1948 /* The jobid follows the rename extension, if present */
1950 struct changelog_ext_jobid *changelog_rec_jobid(const struct changelog_rec *rec)
1952 enum changelog_rec_flags crf = (enum changelog_rec_flags)
1953 (rec->cr_flags & (CLF_VERSION | CLF_RENAME));
1955 return (struct changelog_ext_jobid *)((char *)rec +
1956 changelog_rec_offset(crf,
1960 /* The additional flags follow the rename and jobid extensions, if present */
1962 struct changelog_ext_extra_flags *changelog_rec_extra_flags(
1963 const struct changelog_rec *rec)
1965 enum changelog_rec_flags crf = (enum changelog_rec_flags)
1966 (rec->cr_flags & (CLF_VERSION | CLF_RENAME | CLF_JOBID));
1968 return (struct changelog_ext_extra_flags *)((char *)rec +
1969 changelog_rec_offset(crf,
1973 /* The uid/gid is the first extra extension */
1975 struct changelog_ext_uidgid *changelog_rec_uidgid(
1976 const struct changelog_rec *rec)
1978 enum changelog_rec_flags crf = (enum changelog_rec_flags)
1980 (CLF_VERSION | CLF_RENAME | CLF_JOBID | CLF_EXTRA_FLAGS));
1982 return (struct changelog_ext_uidgid *)((char *)rec +
1983 changelog_rec_offset(crf,
1987 /* The nid is the second extra extension */
1989 struct changelog_ext_nid *changelog_rec_nid(const struct changelog_rec *rec)
1991 enum changelog_rec_flags crf = (enum changelog_rec_flags)
1993 (CLF_VERSION | CLF_RENAME | CLF_JOBID | CLF_EXTRA_FLAGS));
1994 enum changelog_rec_extra_flags cref = CLFE_INVALID;
1996 if (rec->cr_flags & CLF_EXTRA_FLAGS)
1997 cref = (enum changelog_rec_extra_flags)
1998 (changelog_rec_extra_flags(rec)->cr_extra_flags &
2001 return (struct changelog_ext_nid *)((char *)rec +
2002 changelog_rec_offset(crf, cref));
2005 /* The OPEN mode is the third extra extension */
2007 struct changelog_ext_openmode *changelog_rec_openmode(
2008 const struct changelog_rec *rec)
2010 enum changelog_rec_flags crf = (enum changelog_rec_flags)
2012 (CLF_VERSION | CLF_RENAME | CLF_JOBID | CLF_EXTRA_FLAGS));
2013 enum changelog_rec_extra_flags cref = CLFE_INVALID;
2015 if (rec->cr_flags & CLF_EXTRA_FLAGS) {
2016 cref = (enum changelog_rec_extra_flags)
2017 (changelog_rec_extra_flags(rec)->cr_extra_flags &
2018 (CLFE_UIDGID | CLFE_NID));
2021 return (struct changelog_ext_openmode *)((char *)rec +
2022 changelog_rec_offset(crf, cref));
2025 /* The xattr name is the fourth extra extension */
2027 struct changelog_ext_xattr *changelog_rec_xattr(
2028 const struct changelog_rec *rec)
2030 enum changelog_rec_flags crf = (enum changelog_rec_flags)
2032 (CLF_VERSION | CLF_RENAME | CLF_JOBID | CLF_EXTRA_FLAGS));
2033 enum changelog_rec_extra_flags cref = CLFE_INVALID;
2035 if (rec->cr_flags & CLF_EXTRA_FLAGS)
2036 cref = (enum changelog_rec_extra_flags)
2037 (changelog_rec_extra_flags(rec)->cr_extra_flags &
2038 (CLFE_UIDGID | CLFE_NID | CLFE_OPEN));
2040 return (struct changelog_ext_xattr *)((char *)rec +
2041 changelog_rec_offset(crf, cref));
2044 /* The name follows the rename, jobid and extra flags extns, if present */
2045 static inline char *changelog_rec_name(const struct changelog_rec *rec)
2047 enum changelog_rec_extra_flags cref = CLFE_INVALID;
2049 if (rec->cr_flags & CLF_EXTRA_FLAGS)
2050 cref = (enum changelog_rec_extra_flags)
2051 changelog_rec_extra_flags(rec)->cr_extra_flags;
2053 return (char *)rec + changelog_rec_offset(
2054 (enum changelog_rec_flags)(rec->cr_flags & CLF_SUPPORTED),
2055 (enum changelog_rec_extra_flags)(cref & CLFE_SUPPORTED));
2058 static inline char *changelog_rec_sname(const struct changelog_rec *rec)
2060 char *str = changelog_rec_name(rec);
2062 while (*str != '\0')
2067 static inline __kernel_size_t changelog_rec_snamelen(const struct changelog_rec *rec)
2069 return strlen(changelog_rec_sname(rec));
2073 * Remap a record to the desired format as specified by the crf flags.
2074 * The record must be big enough to contain the final remapped version.
2075 * Superfluous extension fields are removed and missing ones are added
2076 * and zeroed. The flags of the record are updated accordingly.
2078 * The jobid and rename extensions can be added to a record, to match the
2079 * format an application expects, typically. In this case, the newly added
2080 * fields will be zeroed.
2081 * The Jobid field can be removed, to guarantee compatibility with older
2082 * clients that don't expect this field in the records they process.
2084 * The following assumptions are being made:
2085 * - CLF_RENAME will not be removed
2086 * - CLF_JOBID will not be added without CLF_RENAME being added too
2087 * - CLF_EXTRA_FLAGS will not be added without CLF_JOBID being added too
2089 * @param[in,out] rec The record to remap.
2090 * @param[in] crf_wanted Flags describing the desired extensions.
2091 * @param[in] cref_want Flags describing the desired extra extensions.
2093 static inline void changelog_remap_rec(struct changelog_rec *rec,
2094 enum changelog_rec_flags crf_wanted,
2095 enum changelog_rec_extra_flags cref_want)
2097 char *xattr_mov = NULL;
2098 char *omd_mov = NULL;
2099 char *nid_mov = NULL;
2100 char *uidgid_mov = NULL;
2104 enum changelog_rec_extra_flags cref = CLFE_INVALID;
2106 crf_wanted = (enum changelog_rec_flags)
2107 (crf_wanted & CLF_SUPPORTED);
2108 cref_want = (enum changelog_rec_extra_flags)
2109 (cref_want & CLFE_SUPPORTED);
2111 if ((rec->cr_flags & CLF_SUPPORTED) == crf_wanted) {
2112 if (!(rec->cr_flags & CLF_EXTRA_FLAGS) ||
2113 (rec->cr_flags & CLF_EXTRA_FLAGS &&
2114 (changelog_rec_extra_flags(rec)->cr_extra_flags &
2120 /* First move the variable-length name field */
2121 memmove((char *)rec + changelog_rec_offset(crf_wanted, cref_want),
2122 changelog_rec_name(rec), rec->cr_namelen);
2124 /* Locations of extensions in the remapped record */
2125 if (rec->cr_flags & CLF_EXTRA_FLAGS) {
2126 xattr_mov = (char *)rec +
2127 changelog_rec_offset(
2128 (enum changelog_rec_flags)
2129 (crf_wanted & CLF_SUPPORTED),
2130 (enum changelog_rec_extra_flags)
2131 (cref_want & ~CLFE_XATTR));
2132 omd_mov = (char *)rec +
2133 changelog_rec_offset(
2134 (enum changelog_rec_flags)
2135 (crf_wanted & CLF_SUPPORTED),
2136 (enum changelog_rec_extra_flags)
2137 (cref_want & ~(CLFE_OPEN | CLFE_XATTR)));
2138 nid_mov = (char *)rec +
2139 changelog_rec_offset(
2140 (enum changelog_rec_flags)
2141 (crf_wanted & CLF_SUPPORTED),
2142 (enum changelog_rec_extra_flags)
2144 ~(CLFE_NID | CLFE_OPEN | CLFE_XATTR)));
2145 uidgid_mov = (char *)rec +
2146 changelog_rec_offset(
2147 (enum changelog_rec_flags)
2148 (crf_wanted & CLF_SUPPORTED),
2149 (enum changelog_rec_extra_flags)
2150 (cref_want & ~(CLFE_UIDGID |
2154 cref = (enum changelog_rec_extra_flags)
2155 changelog_rec_extra_flags(rec)->cr_extra_flags;
2158 ef_mov = (char *)rec +
2159 changelog_rec_offset(
2160 (enum changelog_rec_flags)
2161 (crf_wanted & ~CLF_EXTRA_FLAGS), CLFE_INVALID);
2162 jid_mov = (char *)rec +
2163 changelog_rec_offset((enum changelog_rec_flags)(crf_wanted &
2164 ~(CLF_EXTRA_FLAGS | CLF_JOBID)),
2166 rnm_mov = (char *)rec +
2167 changelog_rec_offset((enum changelog_rec_flags)(crf_wanted &
2173 /* Move the extension fields to the desired positions */
2174 if ((crf_wanted & CLF_EXTRA_FLAGS) &&
2175 (rec->cr_flags & CLF_EXTRA_FLAGS)) {
2176 if ((cref_want & CLFE_XATTR) && (cref & CLFE_XATTR))
2177 memmove(xattr_mov, changelog_rec_xattr(rec),
2178 sizeof(struct changelog_ext_xattr));
2180 if ((cref_want & CLFE_OPEN) && (cref & CLFE_OPEN))
2181 memmove(omd_mov, changelog_rec_openmode(rec),
2182 sizeof(struct changelog_ext_openmode));
2184 if ((cref_want & CLFE_NID) && (cref & CLFE_NID))
2185 memmove(nid_mov, changelog_rec_nid(rec),
2186 sizeof(struct changelog_ext_nid));
2188 if ((cref_want & CLFE_UIDGID) && (cref & CLFE_UIDGID))
2189 memmove(uidgid_mov, changelog_rec_uidgid(rec),
2190 sizeof(struct changelog_ext_uidgid));
2192 memmove(ef_mov, changelog_rec_extra_flags(rec),
2193 sizeof(struct changelog_ext_extra_flags));
2196 if ((crf_wanted & CLF_JOBID) && (rec->cr_flags & CLF_JOBID))
2197 memmove(jid_mov, changelog_rec_jobid(rec),
2198 sizeof(struct changelog_ext_jobid));
2200 if ((crf_wanted & CLF_RENAME) && (rec->cr_flags & CLF_RENAME))
2201 memmove(rnm_mov, changelog_rec_rename(rec),
2202 sizeof(struct changelog_ext_rename));
2204 /* Clear newly added fields */
2205 if (xattr_mov && (cref_want & CLFE_XATTR) &&
2206 !(cref & CLFE_XATTR))
2207 memset(xattr_mov, 0, sizeof(struct changelog_ext_xattr));
2209 if (omd_mov && (cref_want & CLFE_OPEN) &&
2210 !(cref & CLFE_OPEN))
2211 memset(omd_mov, 0, sizeof(struct changelog_ext_openmode));
2213 if (nid_mov && (cref_want & CLFE_NID) &&
2215 memset(nid_mov, 0, sizeof(struct changelog_ext_nid));
2217 if (uidgid_mov && (cref_want & CLFE_UIDGID) &&
2218 !(cref & CLFE_UIDGID))
2219 memset(uidgid_mov, 0, sizeof(struct changelog_ext_uidgid));
2221 if ((crf_wanted & CLF_EXTRA_FLAGS) &&
2222 !(rec->cr_flags & CLF_EXTRA_FLAGS))
2223 memset(ef_mov, 0, sizeof(struct changelog_ext_extra_flags));
2225 if ((crf_wanted & CLF_JOBID) && !(rec->cr_flags & CLF_JOBID))
2226 memset(jid_mov, 0, sizeof(struct changelog_ext_jobid));
2228 if ((crf_wanted & CLF_RENAME) && !(rec->cr_flags & CLF_RENAME))
2229 memset(rnm_mov, 0, sizeof(struct changelog_ext_rename));
2231 /* Update the record's flags accordingly */
2232 rec->cr_flags = (rec->cr_flags & CLF_FLAGMASK) | crf_wanted;
2233 if (rec->cr_flags & CLF_EXTRA_FLAGS)
2234 changelog_rec_extra_flags(rec)->cr_extra_flags =
2235 changelog_rec_extra_flags(rec)->cr_extra_flags |
2239 enum changelog_message_type {
2240 CL_RECORD = 10, /* message is a changelog_rec */
2241 CL_EOF = 11, /* at end of current changelog */
2244 /********* Misc **********/
2246 struct ioc_data_version {
2248 __u32 idv_layout_version; /* FLR: layout version for OST objects */
2249 __u32 idv_flags; /* enum ioc_data_version_flags */
2252 enum ioc_data_version_flags {
2253 LL_DV_RD_FLUSH = (1 << 0), /* Flush dirty pages from clients */
2254 LL_DV_WR_FLUSH = (1 << 1), /* Flush all caching pages from clients */
2255 LL_DV_SZ_UPDATE = (1 << 2), /* Update the file size on the client */
2259 #define offsetof(typ, memb) ((unsigned long)((char *)&(((typ *)0)->memb)))
2262 #define dot_lustre_name ".lustre"
2263 #define dot_fscrypt_name ".fscrypt"
2266 /********* HSM **********/
2268 /** HSM per-file state
2269 * See HSM_FLAGS below.
2272 HS_NONE = 0x00000000,
2273 HS_EXISTS = 0x00000001,
2274 HS_DIRTY = 0x00000002,
2275 HS_RELEASED = 0x00000004,
2276 HS_ARCHIVED = 0x00000008,
2277 HS_NORELEASE = 0x00000010,
2278 HS_NOARCHIVE = 0x00000020,
2279 HS_LOST = 0x00000040,
2280 HS_PCCRW = 0x00000080,
2281 HS_PCCRO = 0x00000100,
2284 /* HSM user-setable flags. */
2285 #define HSM_USER_MASK (HS_NORELEASE | HS_NOARCHIVE | HS_DIRTY)
2287 /* Other HSM flags. */
2288 #define HSM_STATUS_MASK (HS_EXISTS | HS_LOST | HS_RELEASED | HS_ARCHIVED)
2291 * All HSM-related possible flags that could be applied to a file.
2292 * This should be kept in sync with hsm_states.
2294 #define HSM_FLAGS_MASK (HSM_USER_MASK | HSM_STATUS_MASK)
2297 * HSM request progress state
2299 enum hsm_progress_states {
2306 static inline const char *hsm_progress_state2name(enum hsm_progress_states s)
2309 case HPS_WAITING: return "waiting";
2310 case HPS_RUNNING: return "running";
2311 case HPS_DONE: return "done";
2312 default: return "unknown";
2319 } __attribute__((packed));
2322 * Current HSM states of a Lustre file.
2324 * This structure purpose is to be sent to user-space mainly. It describes the
2325 * current HSM flags and in-progress action.
2327 struct hsm_user_state {
2328 /** Current HSM states, from enum hsm_states. */
2330 __u32 hus_archive_id;
2331 /** The current undergoing action, if there is one */
2332 __u32 hus_in_progress_state;
2333 __u32 hus_in_progress_action;
2334 struct hsm_extent hus_in_progress_location;
2335 char hus_extended_info[];
2338 struct hsm_state_set_ioc {
2339 struct lu_fid hssi_fid;
2341 __u64 hssi_clearmask;
2345 * This structure describes the current in-progress action for a file.
2346 * it is retuned to user space and send over the wire
2348 struct hsm_current_action {
2349 /** The current undergoing action, if there is one */
2350 /* state is one of hsm_progress_states */
2352 /* action is one of hsm_user_action */
2354 struct hsm_extent hca_location;
2357 /***** HSM user requests ******/
2358 /* User-generated (lfs/ioctl) request types */
2359 enum hsm_user_action {
2360 HUA_NONE = 1, /* no action (noop) */
2361 HUA_ARCHIVE = 10, /* copy to hsm */
2362 HUA_RESTORE = 11, /* prestage */
2363 HUA_RELEASE = 12, /* drop ost objects */
2364 HUA_REMOVE = 13, /* remove from archive */
2365 HUA_CANCEL = 14 /* cancel a request */
2368 static inline const char *hsm_user_action2name(enum hsm_user_action a)
2371 case HUA_NONE: return "NOOP";
2372 case HUA_ARCHIVE: return "ARCHIVE";
2373 case HUA_RESTORE: return "RESTORE";
2374 case HUA_RELEASE: return "RELEASE";
2375 case HUA_REMOVE: return "REMOVE";
2376 case HUA_CANCEL: return "CANCEL";
2377 default: return "UNKNOWN";
2382 * List of hr_flags (bit field)
2384 #define HSM_FORCE_ACTION 0x0001
2385 /* used by CT, cannot be set by user */
2386 #define HSM_GHOST_COPY 0x0002
2389 * Contains all the fixed part of struct hsm_user_request.
2392 struct hsm_request {
2393 __u32 hr_action; /* enum hsm_user_action */
2394 __u32 hr_archive_id; /* archive id, used only with HUA_ARCHIVE */
2395 __u64 hr_flags; /* request flags */
2396 __u32 hr_itemcount; /* item count in hur_user_item vector */
2400 struct hsm_user_item {
2401 struct lu_fid hui_fid;
2402 struct hsm_extent hui_extent;
2403 } __attribute__((packed));
2405 struct hsm_user_request {
2406 struct hsm_request hur_request;
2407 struct hsm_user_item hur_user_item[0];
2408 /* extra data blob at end of struct (after all
2409 * hur_user_items), only use helpers to access it
2411 } __attribute__((packed));
2413 /** Return pointer to data field in a hsm user request */
2414 static inline void *hur_data(struct hsm_user_request *hur)
2416 return &(hur->hur_user_item[hur->hur_request.hr_itemcount]);
2420 * Compute the current length of the provided hsm_user_request. This returns -1
2421 * instead of an errno because __kernel_ssize_t is defined to be only
2424 * return -1 on bounds check error.
2426 static inline __kernel_size_t hur_len(struct hsm_user_request *hur)
2430 /* can't overflow a __u64 since hr_itemcount is only __u32 */
2431 size = offsetof(struct hsm_user_request, hur_user_item[0]) +
2432 (__u64)hur->hur_request.hr_itemcount *
2433 sizeof(hur->hur_user_item[0]) + hur->hur_request.hr_data_len;
2435 if ((__kernel_ssize_t)size < 0)
2441 /****** HSM RPCs to copytool *****/
2442 /* Message types the copytool may receive */
2443 enum hsm_message_type {
2444 HMT_ACTION_LIST = 100, /* message is a hsm_action_list */
2447 /* Actions the copytool may be instructed to take for a given action_item */
2448 enum hsm_copytool_action {
2449 HSMA_NONE = 10, /* no action */
2450 HSMA_ARCHIVE = 20, /* arbitrary offset */
2456 static inline const char *hsm_copytool_action2name(enum hsm_copytool_action a)
2459 case HSMA_NONE: return "NOOP";
2460 case HSMA_ARCHIVE: return "ARCHIVE";
2461 case HSMA_RESTORE: return "RESTORE";
2462 case HSMA_REMOVE: return "REMOVE";
2463 case HSMA_CANCEL: return "CANCEL";
2464 default: return "UNKNOWN";
2468 /* Copytool item action description */
2469 struct hsm_action_item {
2470 __u32 hai_len; /* valid size of this struct */
2471 __u32 hai_action; /* hsm_copytool_action, but use known size */
2472 struct lu_fid hai_fid; /* Lustre FID to operate on */
2473 struct lu_fid hai_dfid; /* fid used for data access */
2474 struct hsm_extent hai_extent; /* byte range to operate on */
2475 __u64 hai_cookie; /* action cookie from coordinator */
2476 __u64 hai_gid; /* grouplock id */
2477 char hai_data[0]; /* variable length */
2478 } __attribute__((packed));
2481 * helper function which print in hexa the first bytes of
2484 * \param hai [IN] record to print
2485 * \param buffer [IN,OUT] buffer to write the hex string to
2486 * \param len [IN] max buffer length
2490 static inline char *hai_dump_data_field(const struct hsm_action_item *hai,
2491 char *buffer, __kernel_size_t len)
2498 data_len = hai->hai_len - sizeof(*hai);
2499 for (i = 0; (i < data_len) && (len > 2); i++) {
2500 snprintf(ptr, 3, "%02X", (unsigned char)hai->hai_data[i]);
2510 /* Copytool action list */
2511 #define HAL_VERSION 1
2512 #define HAL_MAXSIZE LNET_MTU /* bytes, used in userspace only */
2513 struct hsm_action_list {
2515 __u32 hal_count; /* number of hai's to follow */
2516 __u64 hal_compound_id; /* returned by coordinator, ignored */
2518 __u32 hal_archive_id; /* which archive backend */
2520 char hal_fsname[0]; /* null-terminated */
2521 /* struct hsm_action_item[hal_count] follows, aligned on 8-byte
2522 boundaries. See hai_zero */
2523 } __attribute__((packed));
2525 /* Return pointer to first hai in action list */
2526 static inline struct hsm_action_item *hai_first(struct hsm_action_list *hal)
2528 __kernel_size_t offset = __ALIGN_KERNEL(strlen(hal->hal_fsname) + 1, 8);
2530 return (struct hsm_action_item *)(hal->hal_fsname + offset);
2533 /* Return pointer to next hai */
2534 static inline struct hsm_action_item * hai_next(struct hsm_action_item *hai)
2536 __kernel_size_t offset = __ALIGN_KERNEL(hai->hai_len, 8);
2538 return (struct hsm_action_item *)((char *)hai + offset);
2541 /* Return size of an hsm_action_list */
2542 static inline __kernel_size_t hal_size(struct hsm_action_list *hal)
2546 struct hsm_action_item *hai;
2548 sz = sizeof(*hal) + __ALIGN_KERNEL(strlen(hal->hal_fsname) + 1, 8);
2549 hai = hai_first(hal);
2550 for (i = 0; i < hal->hal_count ; i++, hai = hai_next(hai))
2551 sz += __ALIGN_KERNEL(hai->hai_len, 8);
2557 * describe the attributes to be set on imported file
2559 struct hsm_user_import {
2568 __u32 hui_archive_id;
2571 /* Copytool progress reporting */
2572 #define HP_FLAG_COMPLETED 0x01
2573 #define HP_FLAG_RETRY 0x02
2575 struct hsm_progress {
2576 struct lu_fid hp_fid;
2578 struct hsm_extent hp_extent;
2580 __u16 hp_errval; /* positive val */
2585 __u64 hc_data_version;
2587 __u16 hc_errval; /* positive val */
2589 struct hsm_action_item hc_hai;
2592 enum lu_ladvise_type {
2593 LU_LADVISE_INVALID = 0,
2594 LU_LADVISE_WILLREAD = 1,
2595 LU_LADVISE_DONTNEED = 2,
2596 LU_LADVISE_LOCKNOEXPAND = 3,
2597 LU_LADVISE_LOCKAHEAD = 4,
2601 #define LU_LADVISE_NAMES { \
2602 [LU_LADVISE_WILLREAD] = "willread", \
2603 [LU_LADVISE_DONTNEED] = "dontneed", \
2604 [LU_LADVISE_LOCKNOEXPAND] = "locknoexpand", \
2605 [LU_LADVISE_LOCKAHEAD] = "lockahead", \
2608 /* This is the userspace argument for ladvise. It is currently the same as
2609 * what goes on the wire (struct lu_ladvise), but is defined separately as we
2610 * may need info which is only used locally. */
2611 struct llapi_lu_ladvise {
2612 __u16 lla_advice; /* advice type */
2613 __u16 lla_value1; /* values for different advice types */
2615 __u64 lla_start; /* first byte of extent for advice */
2616 __u64 lla_end; /* last byte of extent for advice */
2622 LF_ASYNC = 0x00000001,
2623 LF_UNSET = 0x00000002,
2626 #define LADVISE_MAGIC 0x1ADF1CE0
2627 /* Masks of valid flags for each advice */
2628 #define LF_LOCKNOEXPAND_MASK LF_UNSET
2629 /* Flags valid for all advices not explicitly specified */
2630 #define LF_DEFAULT_MASK LF_ASYNC
2632 #define LF_MASK (LF_ASYNC | LF_UNSET)
2634 #define lla_lockahead_mode lla_value1
2635 #define lla_peradvice_flags lla_value2
2636 #define lla_lockahead_result lla_value3
2638 /* This is the userspace argument for ladvise, corresponds to ladvise_hdr which
2639 * is used on the wire. It is defined separately as we may need info which is
2640 * only used locally. */
2641 struct llapi_ladvise_hdr {
2642 __u32 lah_magic; /* LADVISE_MAGIC */
2643 __u32 lah_count; /* number of advices */
2644 __u64 lah_flags; /* from enum ladvise_flag */
2645 __u32 lah_value1; /* unused */
2646 __u32 lah_value2; /* unused */
2647 __u64 lah_value3; /* unused */
2648 struct llapi_lu_ladvise lah_advise[0]; /* advices in this header */
2651 #define LAH_COUNT_MAX (1024)
2656 SK_CRYPT_AES256_CTR = 1,
2657 SK_CRYPT_INVALID = __UINT16_MAX__
2664 SK_HMAC_INVALID = __UINT16_MAX__
2667 struct sk_crypt_type {
2668 const char *sct_name;
2672 struct sk_hmac_type {
2673 const char *sht_name;
2677 enum lock_mode_user {
2683 #define LOCK_MODE_NAMES { \
2684 [MODE_READ_USER] = "READ",\
2685 [MODE_WRITE_USER] = "WRITE"\
2688 enum lockahead_results {
2689 LLA_RESULT_SENT = 0,
2690 LLA_RESULT_DIFFERENT,
2694 enum lu_heat_flag_bit {
2695 LU_HEAT_FLAG_BIT_INVALID = 0,
2696 LU_HEAT_FLAG_BIT_OFF,
2697 LU_HEAT_FLAG_BIT_CLEAR,
2701 LU_HEAT_FLAG_OFF = 1ULL << LU_HEAT_FLAG_BIT_OFF,
2702 LU_HEAT_FLAG_CLEAR = 1ULL << LU_HEAT_FLAG_BIT_CLEAR,
2705 enum obd_heat_type {
2706 OBD_HEAT_READSAMPLE = 0,
2707 OBD_HEAT_WRITESAMPLE = 1,
2708 OBD_HEAT_READBYTE = 2,
2709 OBD_HEAT_WRITEBYTE = 3,
2713 #define LU_HEAT_NAMES { \
2714 [OBD_HEAT_READSAMPLE] = "readsample", \
2715 [OBD_HEAT_WRITESAMPLE] = "writesample", \
2716 [OBD_HEAT_READBYTE] = "readbyte", \
2717 [OBD_HEAT_WRITEBYTE] = "writebyte", \
2728 LU_PCC_READWRITE = 0x01,
2729 LU_PCC_READONLY = 0x02,
2730 LU_PCC_TYPE_MASK = LU_PCC_READWRITE | LU_PCC_READONLY,
2731 LU_PCC_FL_ASYNC = 0x10,
2735 static inline const char *pcc_type2string(enum lu_pcc_type type)
2737 switch (type & LU_PCC_TYPE_MASK) {
2740 case LU_PCC_READWRITE:
2742 case LU_PCC_READONLY:
2749 struct lu_pcc_attach {
2750 __u32 pcca_type; /* PCC type */
2751 __u32 pcca_id; /* archive ID for readwrite, group ID for readonly */
2754 enum lu_pcc_detach_opts {
2755 PCC_DETACH_OPT_NONE = 0, /* Detach only, keep the PCC copy */
2756 PCC_DETACH_OPT_UNCACHE, /* Remove the cached file after detach */
2759 struct lu_pcc_detach_fid {
2760 /* fid of the file to detach */
2761 struct lu_fid pccd_fid;
2765 struct lu_pcc_detach {
2769 enum lu_pcc_state_flags {
2770 PCC_STATE_FL_NONE = 0x0,
2771 /* The inode attr is cached locally */
2772 PCC_STATE_FL_ATTR_VALID = 0x01,
2773 /* The file is being attached into PCC */
2774 PCC_STATE_FL_ATTACHING = 0x02,
2775 /* The PCC copy is unlinked */
2776 PCC_STATE_FL_UNLINKED = 0x04,
2779 struct lu_pcc_state {
2780 __u32 pccs_type; /* enum lu_pcc_type */
2781 __u32 pccs_open_count;
2782 __u32 pccs_flags; /* enum lu_pcc_state_flags */
2784 char pccs_path[PATH_MAX];
2787 enum lu_project_type {
2788 LU_PROJECT_NONE = 0,
2795 __u32 project_type; /* enum lu_project_type */
2797 __u32 project_xflags;
2798 __u32 project_reserved;
2799 char project_name[NAME_MAX + 1];
2804 /* make header's size equal lu_fid */
2807 struct lu_fid fa_fids[0];
2809 #define OBD_MAX_FIDS_IN_ARRAY 4096
2811 /* more types could be defined upon need for more complex
2812 * format to be used in foreign symlink LOV/LMV EAs, like
2813 * one to describe a delimiter string and occurence number
2814 * of delimited sub-string, ...
2816 enum ll_foreign_symlink_upcall_item_type {
2822 /* may need to be modified to allow for more format items to be defined, and
2823 * like for ll_foreign_symlink_upcall_item_type enum
2825 struct ll_foreign_symlink_upcall_item {
2835 /* internal storage of constant string */
2837 /* upcall stores constant string in a raw */
2844 #define POSLEN_ITEM_SZ (offsetof(struct ll_foreign_symlink_upcall_item, len) + \
2845 sizeof(((struct ll_foreign_symlink_upcall_item *)0)->len))
2846 #define STRING_ITEM_SZ(sz) ( \
2847 offsetof(struct ll_foreign_symlink_upcall_item, bytestring) + \
2848 (sz + sizeof(__u32) - 1) / sizeof(__u32) * sizeof(__u32))
2850 /* presently limited to not cause max stack frame size to be reached
2851 * because of temporary automatic array of
2852 * "struct ll_foreign_symlink_upcall_item" presently used in
2853 * foreign_symlink_upcall_info_store()
2855 #define MAX_NB_UPCALL_ITEMS 32
2857 #if defined(__cplusplus)
2861 /** @} lustreuser */
2863 #endif /* _LUSTRE_USER_H */