1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
30 * Use is subject to license terms.
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
49 #include <lustre/ll_fiemap.h>
50 #if defined(__linux__)
51 #include <linux/lustre_user.h>
52 #elif defined(__APPLE__)
53 #include <darwin/lustre_user.h>
54 #elif defined(__WINNT__)
55 #include <winnt/lustre_user.h>
57 #error Unsupported operating system.
61 #define LL_SUPER_MAGIC 0x0BD00BD0
63 #ifndef FSFILT_IOC_GETFLAGS
64 #define FSFILT_IOC_GETFLAGS _IOR('f', 1, long)
65 #define FSFILT_IOC_SETFLAGS _IOW('f', 2, long)
66 #define FSFILT_IOC_GETVERSION _IOR('f', 3, long)
67 #define FSFILT_IOC_SETVERSION _IOW('f', 4, long)
68 #define FSFILT_IOC_GETVERSION_OLD _IOR('v', 1, long)
69 #define FSFILT_IOC_SETVERSION_OLD _IOW('v', 2, long)
70 #define FSFILT_IOC_FIEMAP _IOWR('f', 11, struct ll_user_fiemap)
73 /* FIEMAP flags supported by Lustre */
74 #define LUSTRE_FIEMAP_FLAGS_COMPAT (FIEMAP_FLAG_SYNC | FIEMAP_FLAG_DEVICE_ORDER)
76 enum obd_statfs_state {
77 OS_STATE_DEGRADED = 0x00000001, /**< RAID degraded/rebuilding */
78 OS_STATE_READONLY = 0x00000002, /**< filesystem is read-only */
79 OS_STATE_RDONLY_1 = 0x00000004, /**< obsolete 1.6, was EROFS=30 */
80 OS_STATE_RDONLY_2 = 0x00000008, /**< obsolete 1.6, was EROFS=30 */
81 OS_STATE_RDONLY_3 = 0x00000010, /**< obsolete 1.6, was EROFS=30 */
95 __u32 os_state; /**< obd_statfs_state OS_STATE_* flag */
109 * The ioctl naming rules:
110 * LL_* - works on the currently opened filehandle instead of parent dir
111 * *_OBD_* - gets data for both OSC or MDC (LOV, LMV indirectly)
112 * *_MDC_* - gets/sets data related to MDC
113 * *_LOV_* - gets/sets data related to OSC/LOV
114 * *FILE* - called on parent dir and passes in a filename
115 * *STRIPE* - set/get lov_user_md
116 * *INFO - set/get lov_user_mds_data
118 /* see <lustre_obd.h> for ioctl numberss 101-150 */
119 #define LL_IOC_GETFLAGS _IOR ('f', 151, long)
120 #define LL_IOC_SETFLAGS _IOW ('f', 152, long)
121 #define LL_IOC_CLRFLAGS _IOW ('f', 153, long)
122 #define LL_IOC_LOV_SETSTRIPE _IOW ('f', 154, long)
123 #define LL_IOC_LOV_GETSTRIPE _IOW ('f', 155, long)
124 #define LL_IOC_LOV_SETEA _IOW ('f', 156, long)
125 #define LL_IOC_RECREATE_OBJ _IOW ('f', 157, long)
126 #define LL_IOC_RECREATE_FID _IOW ('f', 157, struct lu_fid)
127 #define LL_IOC_GROUP_LOCK _IOW ('f', 158, long)
128 #define LL_IOC_GROUP_UNLOCK _IOW ('f', 159, long)
129 #define LL_IOC_QUOTACHECK _IOW ('f', 160, int)
130 #define LL_IOC_POLL_QUOTACHECK _IOR ('f', 161, struct if_quotacheck *)
131 #define LL_IOC_QUOTACTL _IOWR('f', 162, struct if_quotactl *)
132 #define IOC_OBD_STATFS _IOWR('f', 164, struct obd_statfs *)
133 #define IOC_LOV_GETINFO _IOWR('f', 165, struct lov_user_mds_data *)
134 #define LL_IOC_FLUSHCTX _IOW ('f', 166, long)
135 #define LL_IOC_RMTACL _IOW ('f', 167, long)
136 #define LL_IOC_GETOBDCOUNT _IOR ('f', 168, long)
137 #define LL_IOC_LLOOP_ATTACH _IOWR('f', 169, long)
138 #define LL_IOC_LLOOP_DETACH _IOWR('f', 170, long)
139 #define LL_IOC_LLOOP_INFO _IOWR('f', 171, long)
140 #define LL_IOC_LLOOP_DETACH_BYDEV _IOWR('f', 172, long)
141 #define LL_IOC_PATH2FID _IOR ('f', 173, long)
142 #define LL_IOC_GET_CONNECT_FLAGS _IOWR('f', 174, __u64 *)
143 #define LL_IOC_GET_MDTIDX _IOR ('f', 175, int)
144 #define LL_IOC_HSM_CT_START _IOW ('f', 176,struct lustre_kernelcomm)
145 /* see <lustre_obd.h> for ioctl numbers 177-210 */
148 #define LL_STATFS_MDC 1
149 #define LL_STATFS_LOV 2
151 #define IOC_MDC_TYPE 'i'
152 #define IOC_MDC_LOOKUP _IOWR(IOC_MDC_TYPE, 20, struct obd_device *)
153 #define IOC_MDC_GETFILESTRIPE _IOWR(IOC_MDC_TYPE, 21, struct lov_user_md *)
154 #define IOC_MDC_GETFILEINFO _IOWR(IOC_MDC_TYPE, 22, struct lov_user_mds_data *)
155 #define LL_IOC_MDC_GETINFO _IOWR(IOC_MDC_TYPE, 23, struct lov_user_mds_data *)
157 /* Keep these for backward compartability. */
158 #define LL_IOC_OBD_STATFS IOC_OBD_STATFS
159 #define IOC_MDC_GETSTRIPE IOC_MDC_GETFILESTRIPE
161 #define O_LOV_DELAY_CREATE 0100000000 /* hopefully this does not conflict */
163 #define LL_FILE_IGNORE_LOCK 0x00000001
164 #define LL_FILE_GROUP_LOCKED 0x00000002
165 #define LL_FILE_READAHEAD 0x00000004
166 #define LL_FILE_RMTACL 0x00000008
168 #define LOV_USER_MAGIC_V1 0x0BD10BD0
169 #define LOV_USER_MAGIC LOV_USER_MAGIC_V1
170 #define LOV_USER_MAGIC_JOIN_V1 0x0BD20BD0
171 #define LOV_USER_MAGIC_V3 0x0BD30BD0
173 #define LOV_PATTERN_RAID0 0x001
174 #define LOV_PATTERN_RAID1 0x002
175 #define LOV_PATTERN_FIRST 0x100
177 #define LOV_MAXPOOLNAME 16
178 #define LOV_POOLNAMEF "%.16s"
180 #define lov_user_ost_data lov_user_ost_data_v1
181 struct lov_user_ost_data_v1 { /* per-stripe data structure */
182 __u64 l_object_id; /* OST object ID */
183 __u64 l_object_seq; /* OST object seq number */
184 __u32 l_ost_gen; /* generation of this OST index */
185 __u32 l_ost_idx; /* OST index in LOV */
186 } __attribute__((packed));
188 #define lov_user_md lov_user_md_v1
189 struct lov_user_md_v1 { /* LOV EA user data (host-endian) */
190 __u32 lmm_magic; /* magic number = LOV_USER_MAGIC_V1 */
191 __u32 lmm_pattern; /* LOV_PATTERN_RAID0, LOV_PATTERN_RAID1 */
192 __u64 lmm_object_id; /* LOV object ID */
193 __u64 lmm_object_seq; /* LOV object seq */
194 __u32 lmm_stripe_size; /* size of stripe in bytes */
195 __u16 lmm_stripe_count; /* num stripes in use for this object */
196 __u16 lmm_stripe_offset; /* starting stripe offset in lmm_objects */
197 struct lov_user_ost_data_v1 lmm_objects[0]; /* per-stripe data */
198 } __attribute__((packed, __may_alias__));
200 struct lov_user_md_v3 { /* LOV EA user data (host-endian) */
201 __u32 lmm_magic; /* magic number = LOV_USER_MAGIC_V3 */
202 __u32 lmm_pattern; /* LOV_PATTERN_RAID0, LOV_PATTERN_RAID1 */
203 __u64 lmm_object_id; /* LOV object ID */
204 __u64 lmm_object_seq; /* LOV object seq */
205 __u32 lmm_stripe_size; /* size of stripe in bytes */
206 __u16 lmm_stripe_count; /* num stripes in use for this object */
207 __u16 lmm_stripe_offset; /* starting stripe offset in lmm_objects */
208 char lmm_pool_name[LOV_MAXPOOLNAME]; /* pool name */
209 struct lov_user_ost_data_v1 lmm_objects[0]; /* per-stripe data */
210 } __attribute__((packed));
212 /* Compile with -D_LARGEFILE64_SOURCE or -D_GNU_SOURCE (or #define) to
213 * use this. It is unsafe to #define those values in this header as it
214 * is possible the application has already #included <sys/stat.h>. */
215 #ifdef HAVE_LOV_USER_MDS_DATA
216 #define lov_user_mds_data lov_user_mds_data_v1
217 struct lov_user_mds_data_v1 {
218 lstat_t lmd_st; /* MDS stat struct */
219 struct lov_user_md_v1 lmd_lmm; /* LOV EA V1 user data */
220 } __attribute__((packed));
222 struct lov_user_mds_data_v3 {
223 lstat_t lmd_st; /* MDS stat struct */
224 struct lov_user_md_v3 lmd_lmm; /* LOV EA V3 user data */
225 } __attribute__((packed));
228 struct ll_recreate_obj {
234 __u64 id; /* holds object id */
235 __u32 generation; /* holds object generation */
236 __u32 f_type; /* holds object type or stripe idx when passing it to
237 * OST for saving into EA. */
244 static inline int obd_uuid_equals(const struct obd_uuid *u1,
245 const struct obd_uuid *u2)
247 return strcmp((char *)u1->uuid, (char *)u2->uuid) == 0;
250 static inline int obd_uuid_empty(struct obd_uuid *uuid)
252 return uuid->uuid[0] == '\0';
255 static inline void obd_str2uuid(struct obd_uuid *uuid, const char *tmp)
257 strncpy((char *)uuid->uuid, tmp, sizeof(*uuid));
258 uuid->uuid[sizeof(*uuid) - 1] = '\0';
261 /* For printf's only, make sure uuid is terminated */
262 static inline char *obd_uuid2str(struct obd_uuid *uuid)
264 if (uuid->uuid[sizeof(*uuid) - 1] != '\0') {
265 /* Obviously not safe, but for printfs, no real harm done...
266 we're always null-terminated, even in a race. */
267 static char temp[sizeof(*uuid)];
268 memcpy(temp, uuid->uuid, sizeof(*uuid) - 1);
269 temp[sizeof(*uuid) - 1] = '\0';
272 return (char *)(uuid->uuid);
275 /* Extract fsname from uuid (or target name) of a target
276 e.g. (myfs-OST0007_UUID -> myfs)
277 see also deuuidify. */
278 static inline void obd_uuid2fsname(char *buf, char *uuid, int buflen)
282 strncpy(buf, uuid, buflen - 1);
283 buf[buflen - 1] = '\0';
284 p = strrchr(buf, '-');
292 * FID is a cluster-wide unique identifier of a file or an object (stripe).
293 * FIDs are never reused.
297 * FID sequence. Sequence is a unit of migration: all files (objects)
298 * with FIDs from a given sequence are stored on the same server.
299 * Lustre should support 2^64 objects, so even if each sequence
300 * has only a single object we can still enumerate 2^64 objects.
303 /** FID number within sequence. */
306 * FID version, used to distinguish different versions (in the sense
307 * of snapshots, etc.) of the same file system object. Not currently
314 struct lu_fid ff_parent; /* ff_parent.f_ver == file stripe number */
319 /* Userspace should treat lu_fid as opaque, and only use the following methods
320 to print or parse them. Other functions (e.g. compare, swab) could be moved
321 here from lustre_idl.h if needed. */
322 typedef struct lu_fid lustre_fid;
324 /* printf display format
325 e.g. printf("file FID is "DFID"\n", PFID(fid)); */
326 #define DFID_NOBRACE LPX64":0x%x:0x%x"
327 #define DFID "["DFID_NOBRACE"]"
333 /* scanf input parse format -- strip '[' first.
334 e.g. sscanf(fidstr, SFID, RFID(&fid)); */
335 /* #define SFID "0x"LPX64i":0x"LPSZX":0x"LPSZX""
336 liblustreapi.c:2893: warning: format '%lx' expects type 'long unsigned int *', but argument 4 has type 'unsigned int *'
337 liblustreapi.c:2893: warning: format '%lx' expects type 'long unsigned int *', but argument 5 has type 'unsigned int *'
339 #define SFID "0x"LPX64i":0x%x:0x%x"
346 /********* Quotas **********/
348 /* these must be explicitly translated into linux Q_* in ll_dir_ioctl */
349 #define LUSTRE_Q_QUOTAON 0x800002 /* turn quotas on */
350 #define LUSTRE_Q_QUOTAOFF 0x800003 /* turn quotas off */
351 #define LUSTRE_Q_GETINFO 0x800005 /* get information about quota files */
352 #define LUSTRE_Q_SETINFO 0x800006 /* set information about quota files */
353 #define LUSTRE_Q_GETQUOTA 0x800007 /* get user quota structure */
354 #define LUSTRE_Q_SETQUOTA 0x800008 /* set user quota structure */
355 /* lustre-specific control commands */
356 #define LUSTRE_Q_INVALIDATE 0x80000b /* invalidate quota data */
357 #define LUSTRE_Q_FINVALIDATE 0x80000c /* invalidate filter quota data */
359 #define UGQUOTA 2 /* set both USRQUOTA and GRPQUOTA */
361 struct if_quotacheck {
363 struct obd_uuid obd_uuid;
366 #define IDENTITY_DOWNCALL_MAGIC 0x6d6dd620
369 #define N_PERMS_MAX 64
371 struct perm_downcall_data {
376 struct identity_downcall_data {
382 struct perm_downcall_data idd_perms[N_PERMS_MAX];
387 /* for non-mapped uid/gid */
388 #define NOBODY_UID 99
389 #define NOBODY_GID 99
391 #define INVALID_ID (-1)
400 #ifdef NEED_QUOTA_DEFS
402 #define QIF_BLIMITS 1
404 #define QIF_ILIMITS 4
408 #define QIF_LIMITS (QIF_BLIMITS | QIF_ILIMITS)
409 #define QIF_USAGE (QIF_SPACE | QIF_INODES)
410 #define QIF_TIMES (QIF_BTIME | QIF_ITIME)
411 #define QIF_ALL (QIF_LIMITS | QIF_USAGE | QIF_TIMES)
414 #endif /* !__KERNEL__ */
416 typedef enum lustre_quota_version {
418 } lustre_quota_version_t;
420 /* XXX: same as if_dqinfo struct in kernel */
428 /* XXX: same as if_dqblk struct in kernel, plus one padding */
430 __u64 dqb_bhardlimit;
431 __u64 dqb_bsoftlimit;
433 __u64 dqb_ihardlimit;
434 __u64 dqb_isoftlimit;
456 struct obd_dqinfo qc_dqinfo;
457 struct obd_dqblk qc_dqblk;
459 struct obd_uuid obd_uuid;
463 /********* Changelogs **********/
464 /** Changelog record types */
465 enum changelog_rec_type {
467 CL_CREATE = 1, /* namespace */
468 CL_MKDIR = 2, /* namespace */
469 CL_HARDLINK = 3, /* namespace */
470 CL_SOFTLINK = 4, /* namespace */
471 CL_MKNOD = 5, /* namespace */
472 CL_UNLINK = 6, /* namespace */
473 CL_RMDIR = 7, /* namespace */
474 CL_RENAME = 8, /* namespace */
475 CL_EXT = 9, /* namespace extended record (2nd half of rename) */
476 CL_OPEN = 10, /* not currently used */
477 CL_CLOSE = 11, /* may be written to log only with mtime change */
482 CL_HSM = 16, /* HSM specific events, see flags */
483 CL_MTIME = 17, /* Precedence: setattr > mtime > ctime > atime */
489 static inline const char *changelog_type2str(int type) {
490 static const char *changelog_str[] = {
491 "MARK", "CREAT", "MKDIR", "HLINK", "SLINK", "MKNOD", "UNLNK",
492 "RMDIR", "RNMFM", "RNMTO", "OPEN", "CLOSE", "IOCTL", "TRUNC",
493 "SATTR", "XATTR", "HSM", "MTIME", "CTIME", "ATIME" };
494 if (type >= 0 && type < CL_LAST)
495 return changelog_str[type];
499 /* per-record flags */
500 #define CLF_VERSION 0x1000
501 #define CLF_FLAGMASK 0x0FFF
502 /* Anything under the flagmask may be per-type (if desired) */
503 /* Flags for unlink */
504 #define CLF_UNLINK_LAST 0x0001 /* Unlink of last hardlink */
505 #define CLF_UNLINK_HSM_EXISTS 0x0002 /* File has something in HSM */
506 /* HSM cleaning needed */
508 /* 12b used (from high weight to low weight):
513 #define CLF_HSM_ERR_L 0 /* HSM return code, 7 bits */
514 #define CLF_HSM_ERR_H 6
515 #define CLF_HSM_EVENT_L 7 /* HSM event, 3 bits, see enum hsm_event */
516 #define CLF_HSM_EVENT_H 9
517 #define CLF_HSM_FLAG_L 10 /* HSM flags, 2 bits, 1 used, 1 spare */
518 #define CLF_HSM_FLAG_H 11
519 #define CLF_HSM_SPARE_L 12 /* 4 spare bits */
520 #define CLF_HSM_SPARE_H 15
521 #define CLF_HSM_LAST 15
523 #define CLF_GET_BITS(_b, _h, _l) \
524 _b &= (0xFFFF << (CLF_HSM_LAST - _h)); \
525 _b = _b >> (_l + CLF_HSM_LAST - _h)
527 #define CLF_HSM_SUCCESS 0x00
528 #define CLF_HSM_MAXERROR 0x7E
529 #define CLF_HSM_ERROVERFLOW 0x7F
531 #define CLF_HSM_DIRTY 1 /* file is dirty after HSM request end */
533 /* 3 bits field => 8 values allowed */
545 static inline enum hsm_event hsm_get_cl_event(__u16 flags)
549 CLF_GET_BITS(flags, CLF_HSM_EVENT_H, CLF_HSM_EVENT_L);
554 static inline void hsm_set_cl_event(int *flags, enum hsm_event he)
556 *flags |= (he << CLF_HSM_EVENT_L);
559 static inline __u16 hsm_get_cl_flags(int flags)
561 CLF_GET_BITS(flags, CLF_HSM_FLAG_H, CLF_HSM_FLAG_L);
565 static inline void hsm_set_cl_flags(int *flags, int bits)
567 *flags |= (bits << CLF_HSM_FLAG_L);
570 static inline int hsm_get_cl_error(int flags)
572 CLF_GET_BITS(flags, CLF_HSM_ERR_H, CLF_HSM_ERR_L);
576 static inline void hsm_set_cl_error(int *flags, int error)
578 *flags |= (error << CLF_HSM_ERR_L);
581 #define CR_MAXSIZE (PATH_MAX + sizeof(struct changelog_rec))
582 struct changelog_rec {
584 __u16 cr_flags; /**< (flags&CLF_FLAGMASK)|CLF_VERSION */
585 __u32 cr_type; /**< \a changelog_rec_type */
586 __u64 cr_index; /**< changelog record number */
587 __u64 cr_prev; /**< last index for this target fid */
590 lustre_fid cr_tfid; /**< target fid */
591 __u32 cr_markerflags; /**< CL_MARK flags */
593 lustre_fid cr_pfid; /**< parent fid */
594 char cr_name[0]; /**< last element */
595 } __attribute__((packed));
597 struct ioc_changelog {
604 enum changelog_message_type {
605 CL_RECORD = 10, /* message is a changelog_rec */
606 CL_EOF = 11, /* at end of current changelog */
609 /********* Misc **********/
612 # define offsetof(typ,memb) ((unsigned long)((char *)&(((typ *)0)->memb)))
615 #define dot_lustre_name ".lustre"
618 /********* HSM **********/
620 /** HSM per-file state
621 * See HSM_FLAGS below.
624 HS_EXISTS = 0x00000001,
625 HS_DIRTY = 0x00000002,
626 HS_RELEASED = 0x00000004,
627 HS_ARCHIVED = 0x00000008,
628 HS_NORELEASE = 0x00000010,
629 HS_NOARCHIVE = 0x00000020,
630 HS_LOST = 0x00000040,
633 /* HSM user-setable flags. */
634 #define HSM_USER_MASK (HS_NORELEASE | HS_NOARCHIVE | HS_DIRTY)
636 /* Other HSM flags. */
637 #define HSM_STATUS_MASK (HS_EXISTS | HS_LOST | HS_RELEASED | HS_ARCHIVED)
640 * All HSM-related possible flags that could be applied to a file.
641 * This should be kept in sync with hsm_states.
643 #define HSM_FLAGS_MASK (HSM_USER_MASK | HSM_STATUS_MASK)
646 * HSMÂ request progress state
648 enum hsm_progress_states {
655 static inline char *hsm_progress_state2name(enum hsm_progress_states s)
658 case HPS_WAITING: return "waiting";
659 case HPS_RUNNING: return "running";
660 case HPS_DONE: return "done";
661 default: return "unknown";
668 } __attribute__((packed));
671 * Current HSM states of a Lustre file.
673 * This structure purpose is to be sent to user-space mainly. It describes the
674 * current HSM flags and in-progress action.
676 struct hsm_user_state {
677 /** Current HSM states, from enum hsm_states. */
679 __u32 hus_archive_num;
680 /** The current undergoing action, if there is one */
681 __u32 hus_in_progress_state;
682 __u32 hus_in_progress_action;
683 struct hsm_extent hus_in_progress_location;
684 char hus_extended_info[];
687 struct hsm_state_set_ioc {
688 struct lu_fid hssi_fid;
690 __u64 hssi_clearmask;
693 /***** HSM user requests ******/
694 /* User-generated (lfs/ioctl) request types */
695 enum hsm_user_action {
696 HUA_NONE = 1, /* no action (noop) */
697 HUA_ARCHIVE = 10, /* copy to hsm */
698 HUA_RESTORE = 11, /* prestage */
699 HUA_RELEASE = 12, /* drop ost objects */
700 HUA_REMOVE = 13, /* remove from archive */
701 HUA_CANCEL = 14 /* cancel a request */
704 static inline char *hsm_user_action2name(enum hsm_user_action a)
707 case HUA_NONE: return "NOOP";
708 case HUA_ARCHIVE: return "ARCHIVE";
709 case HUA_RESTORE: return "RESTORE";
710 case HUA_RELEASE: return "RELEASE";
711 case HUA_REMOVE: return "REMOVE";
712 case HUA_CANCEL: return "CANCEL";
713 default: return "UNKNOWN";
717 struct hsm_user_item {
719 struct hsm_extent hui_extent;
720 } __attribute__((packed));
722 struct hsm_user_request {
723 __u32 hur_action; /* enum hsm_user_action */
724 __u32 hur_archive_num; /* archive number, used only with HUA_ARCHIVE */
727 struct hsm_user_item hur_user_item[0];
728 /* extra data blob at end of struct (after all
729 * hur_user_items), only use helpers to access it
731 } __attribute__((packed));
733 /** Return pointer to data field in a hsm user request */
734 static inline void *hur_data(struct hsm_user_request *hur)
736 return &(hur->hur_user_item[hur->hur_itemcount]);
739 /** Compute the current length of the provided hsm_user_request. */
740 static inline int hur_len(struct hsm_user_request *hur)
744 data_offset = hur_data(hur) - (void *)hur;
745 return (data_offset + hur->hur_data_len);
748 /****** HSM RPCs to copytool *****/
749 /* Message types the copytool may receive */
750 enum hsm_message_type {
751 HMT_ACTION_LIST = 100, /* message is a hsm_action_list */
754 /* Actions the copytool may be instructed to take for a given action_item */
755 enum hsm_copytool_action {
756 HSMA_NONE = 10, /* no action */
757 HSMA_ARCHIVE = 20, /* arbitrary offset */
763 static inline char *hsm_copytool_action2name(enum hsm_copytool_action a)
766 case HSMA_NONE: return "NOOP";
767 case HSMA_ARCHIVE: return "ARCHIVE";
768 case HSMA_RESTORE: return "RESTORE";
769 case HSMA_REMOVE: return "REMOVE";
770 case HSMA_CANCEL: return "CANCEL";
771 default: return "UNKNOWN";
775 /* Copytool item action description */
776 struct hsm_action_item {
777 __u32 hai_len; /* valid size of this struct */
778 __u32 hai_action; /* hsm_copytool_action, but use known size */
779 lustre_fid hai_fid; /* Lustre FID to operated on */
780 struct hsm_extent hai_extent; /* byte range to operate on */
781 __u64 hai_cookie; /* action cookie from coordinator */
782 __u64 hai_gid; /* grouplock id */
783 char hai_data[0]; /* variable length */
784 } __attribute__((packed));
787 * helper function which print in hexa the first bytes of
789 * \param hai [IN] record to print
790 * \param buffer [OUT] output buffer
791 * \param len [IN] max buffer len
794 static inline char *hai_dump_data_field(struct hsm_action_item *hai,
795 char *buffer, int len)
802 data_len = hai->hai_len - sizeof(*hai);
803 for (i = 0 ; (i < data_len) && (sz > 0) ; i++)
807 cnt = snprintf(ptr, sz, "%.2X",
808 (unsigned char)hai->hai_data[i]);
816 /* Copytool action list */
817 #define HAL_VERSION 1
818 #define HAL_MAXSIZE 4096 /* bytes, used in userspace only */
819 struct hsm_action_list {
821 __u32 hal_count; /* number of hai's to follow */
822 __u64 hal_compound_id; /* returned by coordinator */
823 __u32 hal_archive_num; /* which archive backend */
825 char hal_fsname[0]; /* null-terminated */
826 /* struct hsm_action_item[hal_count] follows, aligned on 8-byte
827 boundaries. See hai_zero */
828 } __attribute__((packed));
830 #ifndef HAVE_CFS_SIZE_ROUND
831 static inline int cfs_size_round (int val)
833 return (val + 7) & (~0x7);
835 #define HAVE_CFS_SIZE_ROUND
838 /* Return pointer to first hai in action list */
839 static inline struct hsm_action_item * hai_zero(struct hsm_action_list *hal)
841 return (struct hsm_action_item *)(hal->hal_fsname +
842 cfs_size_round(strlen(hal-> \
845 /* Return pointer to next hai */
846 static inline struct hsm_action_item * hai_next(struct hsm_action_item *hai)
848 return (struct hsm_action_item *)((char *)hai +
849 cfs_size_round(hai->hai_len));
852 /* Return size of an hsm_action_list */
853 static inline int hal_size(struct hsm_action_list *hal)
856 struct hsm_action_item *hai;
858 sz = sizeof(*hal) + cfs_size_round(strlen(hal->hal_fsname));
860 for (i = 0 ; i < hal->hal_count ; i++) {
861 sz += cfs_size_round(hai->hai_len);
867 /* Copytool progress reporting */
868 #define HP_FLAG_COMPLETED 0x01
869 #define HP_FLAG_RETRY 0x02
871 struct hsm_progress {
874 struct hsm_extent hp_extent;
876 __u16 hp_errval; /* positive val */
877 } __attribute__((packed));
881 #endif /* _LUSTRE_USER_H */