4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2010, 2013, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/include/lustre/lustre_user.h
38 * Lustre public user-space interface definitions.
41 #ifndef _LUSTRE_USER_H
42 #define _LUSTRE_USER_H
44 /** \defgroup lustreuser lustreuser
50 #include <libcfs/posix/posix-types.h>
52 #include <lustre/ll_fiemap.h>
53 #if defined(__linux__)
54 #include <linux/lustre_user.h>
55 #elif defined(__APPLE__)
56 #include <darwin/lustre_user.h>
57 #elif defined(__WINNT__)
58 #include <winnt/lustre_user.h>
60 #error Unsupported operating system.
64 #define LL_SUPER_MAGIC 0x0BD00BD0
66 #ifndef FSFILT_IOC_GETFLAGS
67 #define FSFILT_IOC_GETFLAGS _IOR('f', 1, long)
68 #define FSFILT_IOC_SETFLAGS _IOW('f', 2, long)
69 #define FSFILT_IOC_GETVERSION _IOR('f', 3, long)
70 #define FSFILT_IOC_SETVERSION _IOW('f', 4, long)
71 #define FSFILT_IOC_GETVERSION_OLD _IOR('v', 1, long)
72 #define FSFILT_IOC_SETVERSION_OLD _IOW('v', 2, long)
73 #define FSFILT_IOC_FIEMAP _IOWR('f', 11, struct ll_user_fiemap)
76 /* FIEMAP flags supported by Lustre */
77 #define LUSTRE_FIEMAP_FLAGS_COMPAT (FIEMAP_FLAG_SYNC | FIEMAP_FLAG_DEVICE_ORDER)
79 enum obd_statfs_state {
80 OS_STATE_DEGRADED = 0x00000001, /**< RAID degraded/rebuilding */
81 OS_STATE_READONLY = 0x00000002, /**< filesystem is read-only */
82 OS_STATE_RDONLY_1 = 0x00000004, /**< obsolete 1.6, was EROFS=30 */
83 OS_STATE_RDONLY_2 = 0x00000008, /**< obsolete 1.6, was EROFS=30 */
84 OS_STATE_RDONLY_3 = 0x00000010, /**< obsolete 1.6, was EROFS=30 */
98 __u32 os_state; /**< obd_statfs_state OS_STATE_* flag */
99 __u32 os_fprecreated; /* objs available now to the caller */
100 /* used in QoS code to find preferred
115 * FID is a cluster-wide unique identifier of a file or an object (stripe).
116 * FIDs are never reused.
120 * FID sequence. Sequence is a unit of migration: all files (objects)
121 * with FIDs from a given sequence are stored on the same server.
122 * Lustre should support 2^64 objects, so even if each sequence
123 * has only a single object we can still enumerate 2^64 objects.
126 /* FID number within sequence. */
129 * FID version, used to distinguish different versions (in the sense
130 * of snapshots, etc.) of the same file system object. Not currently
137 struct lu_fid ff_parent; /* ff_parent.f_ver == file stripe number */
140 /* keep this one for compatibility */
141 struct filter_fid_old {
142 struct lu_fid ff_parent;
147 /* Userspace should treat lu_fid as opaque, and only use the following methods
148 * to print or parse them. Other functions (e.g. compare, swab) could be moved
149 * here from lustre_idl.h if needed. */
150 typedef struct lu_fid lustre_fid;
153 * Following struct for object attributes, that will be kept inode's EA.
154 * Introduced in 2.0 release (please see b15993, for details)
155 * Added to all objects since Lustre 2.4 as contains self FID
157 struct lustre_mdt_attrs {
159 * Bitfield for supported data in this structure. From enum lma_compat.
160 * lma_self_fid and lma_flags are always available.
164 * Per-file incompat feature list. Lustre version should support all
165 * flags set in this field. The supported feature mask is available in
169 /** FID of this inode */
170 struct lu_fid lma_self_fid;
174 * Prior to 2.4, the LMA structure also included SOM attributes which has since
175 * been moved to a dedicated xattr
176 * lma_flags was also removed because of lma_compat/incompat fields.
178 #define LMA_OLD_SIZE (sizeof(struct lustre_mdt_attrs) + 5 * sizeof(__u64))
181 * OST object IDentifier.
189 struct lu_fid oi_fid;
193 #define DOSTID LPX64":"LPU64
194 #define POSTID(oi) ostid_seq(oi), ostid_id(oi)
197 * The ioctl naming rules:
198 * LL_* - works on the currently opened filehandle instead of parent dir
199 * *_OBD_* - gets data for both OSC or MDC (LOV, LMV indirectly)
200 * *_MDC_* - gets/sets data related to MDC
201 * *_LOV_* - gets/sets data related to OSC/LOV
202 * *FILE* - called on parent dir and passes in a filename
203 * *STRIPE* - set/get lov_user_md
204 * *INFO - set/get lov_user_mds_data
206 /* see <lustre_lib.h> for ioctl numberss 101-150 */
207 #define LL_IOC_GETFLAGS _IOR ('f', 151, long)
208 #define LL_IOC_SETFLAGS _IOW ('f', 152, long)
209 #define LL_IOC_CLRFLAGS _IOW ('f', 153, long)
210 /* LL_IOC_LOV_SETSTRIPE: See also OBD_IOC_LOV_SETSTRIPE */
211 #define LL_IOC_LOV_SETSTRIPE _IOW ('f', 154, long)
212 /* LL_IOC_LOV_GETSTRIPE: See also OBD_IOC_LOV_GETSTRIPE */
213 #define LL_IOC_LOV_GETSTRIPE _IOW ('f', 155, long)
214 /* LL_IOC_LOV_SETEA: See also OBD_IOC_LOV_SETEA */
215 #define LL_IOC_LOV_SETEA _IOW ('f', 156, long)
216 #define LL_IOC_RECREATE_OBJ _IOW ('f', 157, long)
217 #define LL_IOC_RECREATE_FID _IOW ('f', 157, struct lu_fid)
218 #define LL_IOC_GROUP_LOCK _IOW ('f', 158, long)
219 #define LL_IOC_GROUP_UNLOCK _IOW ('f', 159, long)
220 /* LL_IOC_QUOTACHECK: See also OBD_IOC_QUOTACHECK */
221 #define LL_IOC_QUOTACHECK _IOW ('f', 160, int)
222 /* LL_IOC_POLL_QUOTACHECK: See also OBD_IOC_POLL_QUOTACHECK */
223 #define LL_IOC_POLL_QUOTACHECK _IOR ('f', 161, struct if_quotacheck *)
224 /* LL_IOC_QUOTACTL: See also OBD_IOC_QUOTACTL */
225 #define LL_IOC_QUOTACTL _IOWR('f', 162, struct if_quotactl)
226 #define IOC_OBD_STATFS _IOWR('f', 164, struct obd_statfs *)
227 #define IOC_LOV_GETINFO _IOWR('f', 165, struct lov_user_mds_data *)
228 #define LL_IOC_FLUSHCTX _IOW ('f', 166, long)
229 #define LL_IOC_RMTACL _IOW ('f', 167, long)
230 #define LL_IOC_GETOBDCOUNT _IOR ('f', 168, long)
231 #define LL_IOC_LLOOP_ATTACH _IOWR('f', 169, long)
232 #define LL_IOC_LLOOP_DETACH _IOWR('f', 170, long)
233 #define LL_IOC_LLOOP_INFO _IOWR('f', 171, struct lu_fid)
234 #define LL_IOC_LLOOP_DETACH_BYDEV _IOWR('f', 172, long)
235 #define LL_IOC_PATH2FID _IOR ('f', 173, long)
236 #define LL_IOC_GET_CONNECT_FLAGS _IOWR('f', 174, __u64 *)
237 #define LL_IOC_GET_MDTIDX _IOR ('f', 175, int)
239 /* see <lustre_lib.h> for ioctl numbers 177-210 */
241 #define LL_IOC_HSM_STATE_GET _IOR('f', 211, struct hsm_user_state)
242 #define LL_IOC_HSM_STATE_SET _IOW('f', 212, struct hsm_state_set)
243 #define LL_IOC_HSM_CT_START _IOW('f', 213, struct lustre_kernelcomm)
244 #define LL_IOC_HSM_COPY_START _IOW('f', 214, struct hsm_copy *)
245 #define LL_IOC_HSM_COPY_END _IOW('f', 215, struct hsm_copy *)
246 #define LL_IOC_HSM_PROGRESS _IOW('f', 216, struct hsm_user_request)
247 #define LL_IOC_HSM_REQUEST _IOW('f', 217, struct hsm_user_request)
248 #define LL_IOC_DATA_VERSION _IOR('f', 218, struct ioc_data_version)
249 #define LL_IOC_LOV_SWAP_LAYOUTS _IOW('f', 219, \
250 struct lustre_swap_layouts)
251 #define LL_IOC_HSM_ACTION _IOR('f', 220, \
252 struct hsm_current_action)
253 /* see <lustre_lib.h> for ioctl numbers 221-232 */
255 #define LL_IOC_LMV_SETSTRIPE _IOWR('f', 240, struct lmv_user_md)
256 #define LL_IOC_LMV_GETSTRIPE _IOWR('f', 241, struct lmv_user_md)
257 #define LL_IOC_REMOVE_ENTRY _IOWR('f', 242, __u64)
258 #define LL_IOC_SET_LEASE _IOWR('f', 243, long)
259 #define LL_IOC_GET_LEASE _IO('f', 244)
260 #define LL_IOC_HSM_IMPORT _IOWR('f', 245, struct hsm_user_import)
262 #define LL_STATFS_LMV 1
263 #define LL_STATFS_LOV 2
264 #define LL_STATFS_NODELAY 4
266 #define IOC_MDC_TYPE 'i'
267 #define IOC_MDC_LOOKUP _IOWR(IOC_MDC_TYPE, 20, struct obd_device *)
268 #define IOC_MDC_GETFILESTRIPE _IOWR(IOC_MDC_TYPE, 21, struct lov_user_md *)
269 #define IOC_MDC_GETFILEINFO _IOWR(IOC_MDC_TYPE, 22, struct lov_user_mds_data *)
270 #define LL_IOC_MDC_GETINFO _IOWR(IOC_MDC_TYPE, 23, struct lov_user_mds_data *)
272 /* Keep these for backward compartability. */
273 #define LL_IOC_OBD_STATFS IOC_OBD_STATFS
274 #define IOC_MDC_GETSTRIPE IOC_MDC_GETFILESTRIPE
277 #define MAX_OBD_NAME 128 /* If this changes, a NEW ioctl must be added */
279 /* Hopefully O_LOV_DELAY_CREATE does not conflict with standard O_xxx flags.
280 * Previously it was defined as 0100000000 and conflicts with FMODE_NONOTIFY
281 * which was added since kernel 2.6.36, so we redefine it as 020000000.
282 * To be compatible with old version's statically linked binary, finally we
283 * define it as (020000000 | 0100000000).
285 #define O_LOV_DELAY_CREATE 0120000000
287 #define LL_FILE_IGNORE_LOCK 0x00000001
288 #define LL_FILE_GROUP_LOCKED 0x00000002
289 #define LL_FILE_READAHEA 0x00000004
290 #define LL_FILE_LOCKED_DIRECTIO 0x00000008 /* client-side locks with dio */
291 #define LL_FILE_LOCKLESS_IO 0x00000010 /* server-side locks with cio */
292 #define LL_FILE_RMTACL 0x00000020
294 #define LOV_USER_MAGIC_V1 0x0BD10BD0
295 #define LOV_USER_MAGIC LOV_USER_MAGIC_V1
296 #define LOV_USER_MAGIC_JOIN_V1 0x0BD20BD0
297 #define LOV_USER_MAGIC_V3 0x0BD30BD0
299 #define LMV_MAGIC_V1 0x0CD10CD0 /*normal stripe lmv magic */
300 #define LMV_USER_MAGIC 0x0CD20CD0 /*default lmv magic*/
302 #define LOV_PATTERN_RAID0 0x001
303 #define LOV_PATTERN_RAID1 0x002
304 #define LOV_PATTERN_FIRST 0x100
306 #define LOV_MAXPOOLNAME 16
307 #define LOV_POOLNAMEF "%.16s"
309 #define LOV_MIN_STRIPE_BITS 16 /* maximum PAGE_SIZE (ia64), power of 2 */
310 #define LOV_MIN_STRIPE_SIZE (1 << LOV_MIN_STRIPE_BITS)
311 #define LOV_MAX_STRIPE_COUNT_OLD 160
312 /* This calculation is crafted so that input of 4096 will result in 160
313 * which in turn is equal to old maximal stripe count.
314 * XXX: In fact this is too simpified for now, what it also need is to get
315 * ea_type argument to clearly know how much space each stripe consumes.
317 * The limit of 12 pages is somewhat arbitrary, but is a reasonably large
318 * allocation that is sufficient for the current generation of systems.
320 * (max buffer size - lov+rpc header) / sizeof(struct lov_ost_data_v1) */
321 #define LOV_MAX_STRIPE_COUNT 2000 /* ((12 * 4096 - 256) / 24) */
322 #define LOV_ALL_STRIPES 0xffff /* only valid for directories */
323 #define LOV_V1_INSANE_STRIPE_COUNT 65532 /* maximum stripe count bz13933 */
325 #define XATTR_LUSTRE_PREFIX "lustre."
326 #define XATTR_LUSTRE_LOV XATTR_LUSTRE_PREFIX"lov"
328 #define lov_user_ost_data lov_user_ost_data_v1
329 struct lov_user_ost_data_v1 { /* per-stripe data structure */
330 struct ost_id l_ost_oi; /* OST object ID */
331 __u32 l_ost_gen; /* generation of this OST index */
332 __u32 l_ost_idx; /* OST index in LOV */
333 } __attribute__((packed));
335 #define lov_user_md lov_user_md_v1
336 struct lov_user_md_v1 { /* LOV EA user data (host-endian) */
337 __u32 lmm_magic; /* magic number = LOV_USER_MAGIC_V1 */
338 __u32 lmm_pattern; /* LOV_PATTERN_RAID0, LOV_PATTERN_RAID1 */
339 struct ost_id lmm_oi; /* LOV object ID */
340 __u32 lmm_stripe_size; /* size of stripe in bytes */
341 __u16 lmm_stripe_count; /* num stripes in use for this object */
343 __u16 lmm_stripe_offset; /* starting stripe offset in
344 * lmm_objects, use when writing */
345 __u16 lmm_layout_gen; /* layout generation number
346 * used when reading */
348 struct lov_user_ost_data_v1 lmm_objects[0]; /* per-stripe data */
349 } __attribute__((packed, __may_alias__));
351 struct lov_user_md_v3 { /* LOV EA user data (host-endian) */
352 __u32 lmm_magic; /* magic number = LOV_USER_MAGIC_V3 */
353 __u32 lmm_pattern; /* LOV_PATTERN_RAID0, LOV_PATTERN_RAID1 */
354 struct ost_id lmm_oi; /* LOV object ID */
355 __u32 lmm_stripe_size; /* size of stripe in bytes */
356 __u16 lmm_stripe_count; /* num stripes in use for this object */
358 __u16 lmm_stripe_offset; /* starting stripe offset in
359 * lmm_objects, use when writing */
360 __u16 lmm_layout_gen; /* layout generation number
361 * used when reading */
363 char lmm_pool_name[LOV_MAXPOOLNAME]; /* pool name */
364 struct lov_user_ost_data_v1 lmm_objects[0]; /* per-stripe data */
365 } __attribute__((packed));
367 static inline __u32 lov_user_md_size(__u16 stripes, __u32 lmm_magic)
369 if (lmm_magic == LOV_USER_MAGIC_V3)
370 return sizeof(struct lov_user_md_v3) +
371 stripes * sizeof(struct lov_user_ost_data_v1);
373 return sizeof(struct lov_user_md_v1) +
374 stripes * sizeof(struct lov_user_ost_data_v1);
377 /* Compile with -D_LARGEFILE64_SOURCE or -D_GNU_SOURCE (or #define) to
378 * use this. It is unsafe to #define those values in this header as it
379 * is possible the application has already #included <sys/stat.h>. */
380 #ifdef HAVE_LOV_USER_MDS_DATA
381 #define lov_user_mds_data lov_user_mds_data_v1
382 struct lov_user_mds_data_v1 {
383 lstat_t lmd_st; /* MDS stat struct */
384 struct lov_user_md_v1 lmd_lmm; /* LOV EA V1 user data */
385 } __attribute__((packed));
387 struct lov_user_mds_data_v3 {
388 lstat_t lmd_st; /* MDS stat struct */
389 struct lov_user_md_v3 lmd_lmm; /* LOV EA V3 user data */
390 } __attribute__((packed));
393 /* keep this to be the same size as lov_user_ost_data_v1 */
394 struct lmv_user_mds_data {
395 struct lu_fid lum_fid;
403 LMV_DEFAULT_TYPE = 1,
406 #define lmv_user_md lmv_user_md_v1
407 struct lmv_user_md_v1 {
408 __u32 lum_magic; /* must be the first field */
409 __u32 lum_stripe_count; /* dirstripe count */
410 __u32 lum_stripe_offset; /* MDT idx for default dirstripe */
411 __u32 lum_hash_type; /* Dir stripe policy */
412 __u32 lum_type; /* LMV type: default or normal */
416 char lum_pool_name[LOV_MAXPOOLNAME];
417 struct lmv_user_mds_data lum_objects[0];
420 static inline int lmv_user_md_size(int stripes, int lmm_magic)
422 return sizeof(struct lmv_user_md) +
423 stripes * sizeof(struct lmv_user_mds_data);
426 extern void lustre_swab_lmv_user_md(struct lmv_user_md *lum);
428 struct ll_recreate_obj {
434 __u64 id; /* holds object id */
435 __u32 generation; /* holds object generation */
436 __u32 f_type; /* holds object type or stripe idx when passing it to
437 * OST for saving into EA. */
445 static inline bool obd_uuid_equals(const struct obd_uuid *u1,
446 const struct obd_uuid *u2)
448 return strcmp((char *)u1->uuid, (char *)u2->uuid) == 0;
451 static inline int obd_uuid_empty(struct obd_uuid *uuid)
453 return uuid->uuid[0] == '\0';
456 static inline void obd_str2uuid(struct obd_uuid *uuid, const char *tmp)
458 strncpy((char *)uuid->uuid, tmp, sizeof(*uuid));
459 uuid->uuid[sizeof(*uuid) - 1] = '\0';
462 /* For printf's only, make sure uuid is terminated */
463 static inline char *obd_uuid2str(const struct obd_uuid *uuid)
465 if (uuid->uuid[sizeof(*uuid) - 1] != '\0') {
466 /* Obviously not safe, but for printfs, no real harm done...
467 we're always null-terminated, even in a race. */
468 static char temp[sizeof(*uuid)];
469 memcpy(temp, uuid->uuid, sizeof(*uuid) - 1);
470 temp[sizeof(*uuid) - 1] = '\0';
473 return (char *)(uuid->uuid);
476 /* Extract fsname from uuid (or target name) of a target
477 e.g. (myfs-OST0007_UUID -> myfs)
478 see also deuuidify. */
479 static inline void obd_uuid2fsname(char *buf, char *uuid, int buflen)
483 strncpy(buf, uuid, buflen - 1);
484 buf[buflen - 1] = '\0';
485 p = strrchr(buf, '-');
490 /* printf display format
491 e.g. printf("file FID is "DFID"\n", PFID(fid)); */
492 #define FID_NOBRACE_LEN 40
493 #define FID_LEN (FID_NOBRACE_LEN + 2)
494 #define DFID_NOBRACE LPX64":0x%x:0x%x"
495 #define DFID "["DFID_NOBRACE"]"
501 /* scanf input parse format -- strip '[' first.
502 e.g. sscanf(fidstr, SFID, RFID(&fid)); */
503 /* #define SFID "0x"LPX64i":0x"LPSZX":0x"LPSZX""
504 liblustreapi.c:2893: warning: format '%lx' expects type 'long unsigned int *', but argument 4 has type 'unsigned int *'
505 liblustreapi.c:2893: warning: format '%lx' expects type 'long unsigned int *', but argument 5 has type 'unsigned int *'
507 #define SFID "0x"LPX64i":0x%x:0x%x"
514 /********* Quotas **********/
516 /* these must be explicitly translated into linux Q_* in ll_dir_ioctl */
517 #define LUSTRE_Q_QUOTAON 0x800002 /* turn quotas on */
518 #define LUSTRE_Q_QUOTAOFF 0x800003 /* turn quotas off */
519 #define LUSTRE_Q_GETINFO 0x800005 /* get information about quota files */
520 #define LUSTRE_Q_SETINFO 0x800006 /* set information about quota files */
521 #define LUSTRE_Q_GETQUOTA 0x800007 /* get user quota structure */
522 #define LUSTRE_Q_SETQUOTA 0x800008 /* set user quota structure */
523 /* lustre-specific control commands */
524 #define LUSTRE_Q_INVALIDATE 0x80000b /* invalidate quota data */
525 #define LUSTRE_Q_FINVALIDATE 0x80000c /* invalidate filter quota data */
527 #define UGQUOTA 2 /* set both USRQUOTA and GRPQUOTA */
529 struct if_quotacheck {
531 struct obd_uuid obd_uuid;
534 #define IDENTITY_DOWNCALL_MAGIC 0x6d6dd629
537 #define N_PERMS_MAX 64
539 struct perm_downcall_data {
545 struct identity_downcall_data {
552 struct perm_downcall_data idd_perms[N_PERMS_MAX];
556 /* for non-mapped uid/gid */
557 #define NOBODY_UID 99
558 #define NOBODY_GID 99
560 #define INVALID_ID (-1)
569 #ifdef NEED_QUOTA_DEFS
571 #define QIF_BLIMITS 1
573 #define QIF_ILIMITS 4
577 #define QIF_LIMITS (QIF_BLIMITS | QIF_ILIMITS)
578 #define QIF_USAGE (QIF_SPACE | QIF_INODES)
579 #define QIF_TIMES (QIF_BTIME | QIF_ITIME)
580 #define QIF_ALL (QIF_LIMITS | QIF_USAGE | QIF_TIMES)
583 #endif /* !__KERNEL__ */
585 /* lustre volatile file support
586 * file name header: .^L^S^T^R:volatile"
588 #define LUSTRE_VOLATILE_HDR ".\x0c\x13\x14\x12:VOLATILE"
589 #define LUSTRE_VOLATILE_HDR_LEN 14
590 /* hdr + MDT index */
591 #define LUSTRE_VOLATILE_IDX LUSTRE_VOLATILE_HDR":%.4X:"
593 typedef enum lustre_quota_version {
595 } lustre_quota_version_t;
597 /* XXX: same as if_dqinfo struct in kernel */
605 /* XXX: same as if_dqblk struct in kernel, plus one padding */
607 __u64 dqb_bhardlimit;
608 __u64 dqb_bsoftlimit;
610 __u64 dqb_ihardlimit;
611 __u64 dqb_isoftlimit;
633 struct obd_dqinfo qc_dqinfo;
634 struct obd_dqblk qc_dqblk;
636 struct obd_uuid obd_uuid;
639 /* swap layout flags */
640 #define SWAP_LAYOUTS_CHECK_DV1 (1 << 0)
641 #define SWAP_LAYOUTS_CHECK_DV2 (1 << 1)
642 #define SWAP_LAYOUTS_KEEP_MTIME (1 << 2)
643 #define SWAP_LAYOUTS_KEEP_ATIME (1 << 3)
645 /* Swap XATTR_NAME_HSM as well, only on the MDT so far */
646 #define SWAP_LAYOUTS_MDS_HSM (1 << 31)
647 struct lustre_swap_layouts {
656 /********* Changelogs **********/
657 /** Changelog record types */
658 enum changelog_rec_type {
660 CL_CREATE = 1, /* namespace */
661 CL_MKDIR = 2, /* namespace */
662 CL_HARDLINK = 3, /* namespace */
663 CL_SOFTLINK = 4, /* namespace */
664 CL_MKNOD = 5, /* namespace */
665 CL_UNLINK = 6, /* namespace */
666 CL_RMDIR = 7, /* namespace */
667 CL_RENAME = 8, /* namespace */
668 CL_EXT = 9, /* namespace extended record (2nd half of rename) */
669 CL_OPEN = 10, /* not currently used */
670 CL_CLOSE = 11, /* may be written to log only with mtime change */
671 CL_LAYOUT = 12, /* file layout/striping modified */
675 CL_HSM = 16, /* HSM specific events, see flags */
676 CL_MTIME = 17, /* Precedence: setattr > mtime > ctime > atime */
682 static inline const char *changelog_type2str(int type) {
683 static const char *changelog_str[] = {
684 "MARK", "CREAT", "MKDIR", "HLINK", "SLINK", "MKNOD", "UNLNK",
685 "RMDIR", "RENME", "RNMTO", "OPEN", "CLOSE", "LYOUT", "TRUNC",
686 "SATTR", "XATTR", "HSM", "MTIME", "CTIME", "ATIME",
689 if (type >= 0 && type < CL_LAST)
690 return changelog_str[type];
694 /* per-record flags */
695 #define CLF_VERSION 0x1000
696 #define CLF_EXT_VERSION 0x2000
697 #define CLF_FLAGSHIFT 12
698 #define CLF_FLAGMASK ((1U << CLF_FLAGSHIFT) - 1)
699 #define CLF_VERMASK (~CLF_FLAGMASK)
700 /* Anything under the flagmask may be per-type (if desired) */
701 /* Flags for unlink */
702 #define CLF_UNLINK_LAST 0x0001 /* Unlink of last hardlink */
703 #define CLF_UNLINK_HSM_EXISTS 0x0002 /* File has something in HSM */
704 /* HSM cleaning needed */
705 /* Flags for rename */
706 #define CLF_RENAME_LAST 0x0001 /* rename unlink last hardlink of target */
709 /* 12b used (from high weight to low weight):
714 #define CLF_HSM_ERR_L 0 /* HSM return code, 7 bits */
715 #define CLF_HSM_ERR_H 6
716 #define CLF_HSM_EVENT_L 7 /* HSM event, 3 bits, see enum hsm_event */
717 #define CLF_HSM_EVENT_H 9
718 #define CLF_HSM_FLAG_L 10 /* HSM flags, 2 bits, 1 used, 1 spare */
719 #define CLF_HSM_FLAG_H 11
720 #define CLF_HSM_SPARE_L 12 /* 4 spare bits */
721 #define CLF_HSM_SPARE_H 15
722 #define CLF_HSM_LAST 15
724 /* Remove bits higher than _h, then extract the value
725 * between _h and _l by shifting lower weigth to bit 0. */
726 #define CLF_GET_BITS(_b, _h, _l) (((_b << (CLF_HSM_LAST - _h)) & 0xFFFF) \
727 >> (CLF_HSM_LAST - _h + _l))
729 #define CLF_HSM_SUCCESS 0x00
730 #define CLF_HSM_MAXERROR 0x7E
731 #define CLF_HSM_ERROVERFLOW 0x7F
733 #define CLF_HSM_DIRTY 1 /* file is dirty after HSM request end */
735 /* 3 bits field => 8 values allowed */
747 static inline enum hsm_event hsm_get_cl_event(__u16 flags)
749 return CLF_GET_BITS(flags, CLF_HSM_EVENT_H, CLF_HSM_EVENT_L);
752 static inline void hsm_set_cl_event(int *flags, enum hsm_event he)
754 *flags |= (he << CLF_HSM_EVENT_L);
757 static inline __u16 hsm_get_cl_flags(int flags)
759 return CLF_GET_BITS(flags, CLF_HSM_FLAG_H, CLF_HSM_FLAG_L);
762 static inline void hsm_set_cl_flags(int *flags, int bits)
764 *flags |= (bits << CLF_HSM_FLAG_L);
767 static inline int hsm_get_cl_error(int flags)
769 return CLF_GET_BITS(flags, CLF_HSM_ERR_H, CLF_HSM_ERR_L);
772 static inline void hsm_set_cl_error(int *flags, int error)
774 *flags |= (error << CLF_HSM_ERR_L);
777 #define CR_MAXSIZE cfs_size_round(2*NAME_MAX + 1 + sizeof(struct changelog_rec))
779 struct changelog_rec {
781 __u16 cr_flags; /**< (flags&CLF_FLAGMASK)|CLF_VERSION */
782 __u32 cr_type; /**< \a changelog_rec_type */
783 __u64 cr_index; /**< changelog record number */
784 __u64 cr_prev; /**< last index for this target fid */
787 lustre_fid cr_tfid; /**< target fid */
788 __u32 cr_markerflags; /**< CL_MARK flags */
790 lustre_fid cr_pfid; /**< parent fid */
791 char cr_name[0]; /**< last element */
792 } __attribute__((packed));
794 /* changelog_ext_rec is 2*sizeof(lu_fid) bigger than changelog_rec, to save
795 * space, only rename uses changelog_ext_rec, while others use changelog_rec to
798 struct changelog_ext_rec {
800 __u16 cr_flags; /**< (flags & CLF_FLAGMASK) |
802 __u32 cr_type; /**< \a changelog_rec_type */
803 __u64 cr_index; /**< changelog record number */
804 __u64 cr_prev; /**< last index for this target fid */
807 lustre_fid cr_tfid; /**< target fid */
808 __u32 cr_markerflags; /**< CL_MARK flags */
810 lustre_fid cr_pfid; /**< target parent fid */
811 lustre_fid cr_sfid; /**< source fid, or zero */
812 lustre_fid cr_spfid; /**< source parent fid, or zero */
813 char cr_name[0]; /**< last element */
814 } __attribute__((packed));
816 #define CHANGELOG_REC_EXTENDED(rec) \
817 (((rec)->cr_flags & CLF_VERMASK) == CLF_EXT_VERSION)
819 static inline int changelog_rec_size(struct changelog_rec *rec)
821 return CHANGELOG_REC_EXTENDED(rec) ? sizeof(struct changelog_ext_rec):
825 static inline char *changelog_rec_name(struct changelog_rec *rec)
827 return CHANGELOG_REC_EXTENDED(rec) ?
828 ((struct changelog_ext_rec *)rec)->cr_name: rec->cr_name;
831 static inline int changelog_rec_snamelen(struct changelog_ext_rec *rec)
833 return rec->cr_namelen - strlen(rec->cr_name) - 1;
836 static inline char *changelog_rec_sname(struct changelog_ext_rec *rec)
838 return rec->cr_name + strlen(rec->cr_name) + 1;
841 struct ioc_changelog {
848 enum changelog_message_type {
849 CL_RECORD = 10, /* message is a changelog_rec */
850 CL_EOF = 11, /* at end of current changelog */
853 /********* Misc **********/
855 struct ioc_data_version {
857 __u64 idv_flags; /* See LL_DV_xxx */
859 #define LL_DV_NOFLUSH 0x01 /* Do not take READ EXTENT LOCK before sampling
860 version. Dirty caches are left unchanged. */
863 # define offsetof(typ,memb) ((unsigned long)((char *)&(((typ *)0)->memb)))
866 #define dot_lustre_name ".lustre"
869 /********* HSM **********/
871 /** HSM per-file state
872 * See HSM_FLAGS below.
875 HS_EXISTS = 0x00000001,
876 HS_DIRTY = 0x00000002,
877 HS_RELEASED = 0x00000004,
878 HS_ARCHIVED = 0x00000008,
879 HS_NORELEASE = 0x00000010,
880 HS_NOARCHIVE = 0x00000020,
881 HS_LOST = 0x00000040,
884 /* HSM user-setable flags. */
885 #define HSM_USER_MASK (HS_NORELEASE | HS_NOARCHIVE | HS_DIRTY)
887 /* Other HSM flags. */
888 #define HSM_STATUS_MASK (HS_EXISTS | HS_LOST | HS_RELEASED | HS_ARCHIVED)
891 * All HSM-related possible flags that could be applied to a file.
892 * This should be kept in sync with hsm_states.
894 #define HSM_FLAGS_MASK (HSM_USER_MASK | HSM_STATUS_MASK)
897 * HSMÂ request progress state
899 enum hsm_progress_states {
906 static inline char *hsm_progress_state2name(enum hsm_progress_states s)
909 case HPS_WAITING: return "waiting";
910 case HPS_RUNNING: return "running";
911 case HPS_DONE: return "done";
912 default: return "unknown";
919 } __attribute__((packed));
922 * Current HSM states of a Lustre file.
924 * This structure purpose is to be sent to user-space mainly. It describes the
925 * current HSM flags and in-progress action.
927 struct hsm_user_state {
928 /** Current HSM states, from enum hsm_states. */
930 __u32 hus_archive_id;
931 /** The current undergoing action, if there is one */
932 __u32 hus_in_progress_state;
933 __u32 hus_in_progress_action;
934 struct hsm_extent hus_in_progress_location;
935 char hus_extended_info[];
938 struct hsm_state_set_ioc {
939 struct lu_fid hssi_fid;
941 __u64 hssi_clearmask;
945 * This structure describes the current in-progress action for a file.
946 * it is retuned to user space and send over the wire
948 struct hsm_current_action {
949 /** The current undergoing action, if there is one */
950 /* state is one of hsm_progress_states */
952 /* action is one of hsm_user_action */
954 struct hsm_extent hca_location;
957 /***** HSM user requests ******/
958 /* User-generated (lfs/ioctl) request types */
959 enum hsm_user_action {
960 HUA_NONE = 1, /* no action (noop) */
961 HUA_ARCHIVE = 10, /* copy to hsm */
962 HUA_RESTORE = 11, /* prestage */
963 HUA_RELEASE = 12, /* drop ost objects */
964 HUA_REMOVE = 13, /* remove from archive */
965 HUA_CANCEL = 14 /* cancel a request */
968 static inline char *hsm_user_action2name(enum hsm_user_action a)
971 case HUA_NONE: return "NOOP";
972 case HUA_ARCHIVE: return "ARCHIVE";
973 case HUA_RESTORE: return "RESTORE";
974 case HUA_RELEASE: return "RELEASE";
975 case HUA_REMOVE: return "REMOVE";
976 case HUA_CANCEL: return "CANCEL";
977 default: return "UNKNOWN";
982 * List of hr_flags (bit field)
984 #define HSM_FORCE_ACTION 0x0001
985 /* used by CT, connot be set by user */
986 #define HSM_GHOST_COPY 0x0002
989 * Contains all the fixed part of struct hsm_user_request.
993 __u32 hr_action; /* enum hsm_user_action */
994 __u32 hr_archive_id; /* archive id, used only with HUA_ARCHIVE */
995 __u64 hr_flags; /* request flags */
996 __u32 hr_itemcount; /* item count in hur_user_item vector */
1000 struct hsm_user_item {
1002 struct hsm_extent hui_extent;
1003 } __attribute__((packed));
1005 struct hsm_user_request {
1006 struct hsm_request hur_request;
1007 struct hsm_user_item hur_user_item[0];
1008 /* extra data blob at end of struct (after all
1009 * hur_user_items), only use helpers to access it
1011 } __attribute__((packed));
1013 /** Return pointer to data field in a hsm user request */
1014 static inline void *hur_data(struct hsm_user_request *hur)
1016 return &(hur->hur_user_item[hur->hur_request.hr_itemcount]);
1019 /** Compute the current length of the provided hsm_user_request. */
1020 static inline int hur_len(struct hsm_user_request *hur)
1022 return offsetof(struct hsm_user_request,
1023 hur_user_item[hur->hur_request.hr_itemcount]) +
1024 hur->hur_request.hr_data_len;
1027 /****** HSM RPCs to copytool *****/
1028 /* Message types the copytool may receive */
1029 enum hsm_message_type {
1030 HMT_ACTION_LIST = 100, /* message is a hsm_action_list */
1033 /* Actions the copytool may be instructed to take for a given action_item */
1034 enum hsm_copytool_action {
1035 HSMA_NONE = 10, /* no action */
1036 HSMA_ARCHIVE = 20, /* arbitrary offset */
1042 static inline char *hsm_copytool_action2name(enum hsm_copytool_action a)
1045 case HSMA_NONE: return "NOOP";
1046 case HSMA_ARCHIVE: return "ARCHIVE";
1047 case HSMA_RESTORE: return "RESTORE";
1048 case HSMA_REMOVE: return "REMOVE";
1049 case HSMA_CANCEL: return "CANCEL";
1050 default: return "UNKNOWN";
1054 /* Copytool item action description */
1055 struct hsm_action_item {
1056 __u32 hai_len; /* valid size of this struct */
1057 __u32 hai_action; /* hsm_copytool_action, but use known size */
1058 lustre_fid hai_fid; /* Lustre FID to operated on */
1059 lustre_fid hai_dfid; /* fid used for data access */
1060 struct hsm_extent hai_extent; /* byte range to operate on */
1061 __u64 hai_cookie; /* action cookie from coordinator */
1062 __u64 hai_gid; /* grouplock id */
1063 char hai_data[0]; /* variable length */
1064 } __attribute__((packed));
1067 * helper function which print in hexa the first bytes of
1069 * \param hai [IN] record to print
1070 * \param buffer [OUT] output buffer
1071 * \param len [IN] max buffer len
1074 static inline char *hai_dump_data_field(struct hsm_action_item *hai,
1075 char *buffer, int len)
1077 int i, sz, data_len;
1082 data_len = hai->hai_len - sizeof(*hai);
1083 for (i = 0 ; (i < data_len) && (sz > 0) ; i++)
1087 cnt = snprintf(ptr, sz, "%.2X",
1088 (unsigned char)hai->hai_data[i]);
1096 /* Copytool action list */
1097 #define HAL_VERSION 1
1098 #define HAL_MAXSIZE LNET_MTU /* bytes, used in userspace only */
1099 struct hsm_action_list {
1101 __u32 hal_count; /* number of hai's to follow */
1102 __u64 hal_compound_id; /* returned by coordinator */
1104 __u32 hal_archive_id; /* which archive backend */
1106 char hal_fsname[0]; /* null-terminated */
1107 /* struct hsm_action_item[hal_count] follows, aligned on 8-byte
1108 boundaries. See hai_zero */
1109 } __attribute__((packed));
1111 #ifndef HAVE_CFS_SIZE_ROUND
1112 static inline int cfs_size_round (int val)
1114 return (val + 7) & (~0x7);
1116 #define HAVE_CFS_SIZE_ROUND
1119 /* Return pointer to first hai in action list */
1120 static inline struct hsm_action_item * hai_zero(struct hsm_action_list *hal)
1122 return (struct hsm_action_item *)(hal->hal_fsname +
1123 cfs_size_round(strlen(hal-> \
1126 /* Return pointer to next hai */
1127 static inline struct hsm_action_item * hai_next(struct hsm_action_item *hai)
1129 return (struct hsm_action_item *)((char *)hai +
1130 cfs_size_round(hai->hai_len));
1133 /* Return size of an hsm_action_list */
1134 static inline int hal_size(struct hsm_action_list *hal)
1137 struct hsm_action_item *hai;
1139 sz = sizeof(*hal) + cfs_size_round(strlen(hal->hal_fsname));
1140 hai = hai_zero(hal);
1141 for (i = 0 ; i < hal->hal_count ; i++, hai = hai_next(hai))
1142 sz += cfs_size_round(hai->hai_len);
1148 * describe the attributes to be set on imported file
1150 struct hsm_user_import {
1159 __u32 hui_archive_id;
1162 /* Copytool progress reporting */
1163 #define HP_FLAG_COMPLETED 0x01
1164 #define HP_FLAG_RETRY 0x02
1166 struct hsm_progress {
1169 struct hsm_extent hp_extent;
1171 __u16 hp_errval; /* positive val */
1176 __u64 hc_data_version;
1178 __u16 hc_errval; /* positive val */
1180 struct hsm_action_item hc_hai;
1183 /** @} lustreuser */
1185 #endif /* _LUSTRE_USER_H */