drivers/staging/lustre/lustre/include/lustre/lustre_user.h

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   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.
   9  *
  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).
  15  *
  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
  19  *
  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
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2010, 2012, Intel Corporation.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  *
  36  * lustre/include/lustre/lustre_user.h
  37  *
  38  * Lustre public user-space interface definitions.
  39  */
  40
  41 #ifndef _LUSTRE_USER_H
  42 #define _LUSTRE_USER_H
  43
  44 /** \defgroup lustreuser lustreuser
  45  *
  46  * @{
  47  */
  48
  49 #include <lustre/ll_fiemap.h>
  50 #include <linux/lustre_user.h>
  51
  52 /* for statfs() */
  53 #define LL_SUPER_MAGIC 0x0BD00BD0
  54
  55 #ifndef FSFILT_IOC_GETFLAGS
  56 #define FSFILT_IOC_GETFLAGS            _IOR('f', 1, long)
  57 #define FSFILT_IOC_SETFLAGS            _IOW('f', 2, long)
  58 #define FSFILT_IOC_GETVERSION        _IOR('f', 3, long)
  59 #define FSFILT_IOC_SETVERSION        _IOW('f', 4, long)
  60 #define FSFILT_IOC_GETVERSION_OLD        _IOR('v', 1, long)
  61 #define FSFILT_IOC_SETVERSION_OLD        _IOW('v', 2, long)
  62 #define FSFILT_IOC_FIEMAP                _IOWR('f', 11, struct ll_user_fiemap)
  63 #endif
  64
  65 /* FIEMAP flags supported by Lustre */
  66 #define LUSTRE_FIEMAP_FLAGS_COMPAT (FIEMAP_FLAG_SYNC | FIEMAP_FLAG_DEVICE_ORDER)
  67
  68 enum obd_statfs_state {
  69         OS_STATE_DEGRADED       = 0x00000001, /**< RAID degraded/rebuilding */
  70         OS_STATE_READONLY       = 0x00000002, /**< filesystem is read-only */
  71         OS_STATE_RDONLY_1       = 0x00000004, /**< obsolete 1.6, was EROFS=30 */
  72         OS_STATE_RDONLY_2       = 0x00000008, /**< obsolete 1.6, was EROFS=30 */
  73         OS_STATE_RDONLY_3       = 0x00000010, /**< obsolete 1.6, was EROFS=30 */
  74 };
  75
  76 struct obd_statfs {
  77         __u64      os_type;
  78         __u64      os_blocks;
  79         __u64      os_bfree;
  80         __u64      os_bavail;
  81         __u64      os_files;
  82         __u64      os_ffree;
  83         __u8        os_fsid[40];
  84         __u32      os_bsize;
  85         __u32      os_namelen;
  86         __u64      os_maxbytes;
  87         __u32      os_state;       /**< obd_statfs_state OS_STATE_* flag */
  88         __u32      os_fprecreated;      /* objs available now to the caller */
  89                                         /* used in QoS code to find preferred
  90                                          * OSTs */
  91         __u32      os_spare2;
  92         __u32      os_spare3;
  93         __u32      os_spare4;
  94         __u32      os_spare5;
  95         __u32      os_spare6;
  96         __u32      os_spare7;
  97         __u32      os_spare8;
  98         __u32      os_spare9;
  99 };
 100
 101 /**
 102  * File IDentifier.
 103  *
 104  * FID is a cluster-wide unique identifier of a file or an object (stripe).
 105  * FIDs are never reused.
 106  **/
 107 struct lu_fid {
 108        /**
 109         * FID sequence. Sequence is a unit of migration: all files (objects)
 110         * with FIDs from a given sequence are stored on the same server.
 111         * Lustre should support 2^64 objects, so even if each sequence
 112         * has only a single object we can still enumerate 2^64 objects.
 113         **/
 114         __u64 f_seq;
 115         /* FID number within sequence. */
 116         __u32 f_oid;
 117         /**
 118          * FID version, used to distinguish different versions (in the sense
 119          * of snapshots, etc.) of the same file system object. Not currently
 120          * used.
 121          **/
 122         __u32 f_ver;
 123 };
 124
 125 struct filter_fid {
 126         struct lu_fid   ff_parent;  /* ff_parent.f_ver == file stripe number */
 127 };
 128
 129 /* keep this one for compatibility */
 130 struct filter_fid_old {
 131         struct lu_fid   ff_parent;
 132         __u64           ff_objid;
 133         __u64           ff_seq;
 134 };
 135
 136 /* Userspace should treat lu_fid as opaque, and only use the following methods
 137  * to print or parse them.  Other functions (e.g. compare, swab) could be moved
 138  * here from lustre_idl.h if needed. */
 139 typedef struct lu_fid lustre_fid;
 140
 141 /**
 142  * Following struct for object attributes, that will be kept inode's EA.
 143  * Introduced in 2.0 release (please see b15993, for details)
 144  * Added to all objects since Lustre 2.4 as contains self FID
 145  */
 146 struct lustre_mdt_attrs {
 147         /**
 148          * Bitfield for supported data in this structure. From enum lma_compat.
 149          * lma_self_fid and lma_flags are always available.
 150          */
 151         __u32   lma_compat;
 152         /**
 153          * Per-file incompat feature list. Lustre version should support all
 154          * flags set in this field. The supported feature mask is available in
 155          * LMA_INCOMPAT_SUPP.
 156          */
 157         __u32   lma_incompat;
 158         /** FID of this inode */
 159         struct lu_fid  lma_self_fid;
 160 };
 161
 162 /**
 163  * Prior to 2.4, the LMA structure also included SOM attributes which has since
 164  * been moved to a dedicated xattr
 165  * lma_flags was also removed because of lma_compat/incompat fields.
 166  */
 167 #define LMA_OLD_SIZE (sizeof(struct lustre_mdt_attrs) + 5 * sizeof(__u64))
 168
 169 /**
 170  * OST object IDentifier.
 171  */
 172 struct ost_id {
 173         union {
 174                 struct ostid {
 175                         __u64   oi_id;
 176                         __u64   oi_seq;
 177                 } oi;
 178                 struct lu_fid oi_fid;
 179         };
 180 };
 181
 182 #define DOSTID LPX64":"LPU64
 183 #define POSTID(oi) ostid_seq(oi), ostid_id(oi)
 184
 185 /*
 186  * The ioctl naming rules:
 187  * LL_*     - works on the currently opened filehandle instead of parent dir
 188  * *_OBD_*  - gets data for both OSC or MDC (LOV, LMV indirectly)
 189  * *_MDC_*  - gets/sets data related to MDC
 190  * *_LOV_*  - gets/sets data related to OSC/LOV
 191  * *FILE*   - called on parent dir and passes in a filename
 192  * *STRIPE* - set/get lov_user_md
 193  * *INFO    - set/get lov_user_mds_data
 194  */
 195 /* see <lustre_lib.h> for ioctl numberss 101-150 */
 196 #define LL_IOC_GETFLAGS          _IOR ('f', 151, long)
 197 #define LL_IOC_SETFLAGS          _IOW ('f', 152, long)
 198 #define LL_IOC_CLRFLAGS          _IOW ('f', 153, long)
 199 /* LL_IOC_LOV_SETSTRIPE: See also OBD_IOC_LOV_SETSTRIPE */
 200 #define LL_IOC_LOV_SETSTRIPE        _IOW ('f', 154, long)
 201 /* LL_IOC_LOV_GETSTRIPE: See also OBD_IOC_LOV_GETSTRIPE */
 202 #define LL_IOC_LOV_GETSTRIPE        _IOW ('f', 155, long)
 203 /* LL_IOC_LOV_SETEA: See also OBD_IOC_LOV_SETEA */
 204 #define LL_IOC_LOV_SETEA                _IOW ('f', 156, long)
 205 #define LL_IOC_RECREATE_OBJ          _IOW ('f', 157, long)
 206 #define LL_IOC_RECREATE_FID          _IOW ('f', 157, struct lu_fid)
 207 #define LL_IOC_GROUP_LOCK              _IOW ('f', 158, long)
 208 #define LL_IOC_GROUP_UNLOCK          _IOW ('f', 159, long)
 209 /* LL_IOC_QUOTACHECK: See also OBD_IOC_QUOTACHECK */
 210 #define LL_IOC_QUOTACHECK              _IOW ('f', 160, int)
 211 /* LL_IOC_POLL_QUOTACHECK: See also OBD_IOC_POLL_QUOTACHECK */
 212 #define LL_IOC_POLL_QUOTACHECK    _IOR ('f', 161, struct if_quotacheck *)
 213 /* LL_IOC_QUOTACTL: See also OBD_IOC_QUOTACTL */
 214 #define LL_IOC_QUOTACTL          _IOWR('f', 162, struct if_quotactl)
 215 #define IOC_OBD_STATFS            _IOWR('f', 164, struct obd_statfs *)
 216 #define IOC_LOV_GETINFO          _IOWR('f', 165, struct lov_user_mds_data *)
 217 #define LL_IOC_FLUSHCTX          _IOW ('f', 166, long)
 218 #define LL_IOC_RMTACL              _IOW ('f', 167, long)
 219 #define LL_IOC_GETOBDCOUNT            _IOR ('f', 168, long)
 220 #define LL_IOC_LLOOP_ATTACH          _IOWR('f', 169, long)
 221 #define LL_IOC_LLOOP_DETACH          _IOWR('f', 170, long)
 222 #define LL_IOC_LLOOP_INFO              _IOWR('f', 171, struct lu_fid)
 223 #define LL_IOC_LLOOP_DETACH_BYDEV       _IOWR('f', 172, long)
 224 #define LL_IOC_PATH2FID          _IOR ('f', 173, long)
 225 #define LL_IOC_GET_CONNECT_FLAGS        _IOWR('f', 174, __u64 *)
 226 #define LL_IOC_GET_MDTIDX              _IOR ('f', 175, int)
 227
 228 /* see <lustre_lib.h> for ioctl numbers 177-210 */
 229
 230 #define LL_IOC_HSM_STATE_GET            _IOR('f', 211, struct hsm_user_state)
 231 #define LL_IOC_HSM_STATE_SET            _IOW('f', 212, struct hsm_state_set)
 232 #define LL_IOC_HSM_CT_START             _IOW('f', 213, struct lustre_kernelcomm)
 233 #define LL_IOC_HSM_COPY_START           _IOW('f', 214, struct hsm_copy *)
 234 #define LL_IOC_HSM_COPY_END             _IOW('f', 215, struct hsm_copy *)
 235 #define LL_IOC_HSM_PROGRESS             _IOW('f', 216, struct hsm_user_request)
 236 #define LL_IOC_HSM_REQUEST              _IOW('f', 217, struct hsm_user_request)
 237 #define LL_IOC_DATA_VERSION             _IOR('f', 218, struct ioc_data_version)
 238 #define LL_IOC_LOV_SWAP_LAYOUTS         _IOW('f', 219, \
 239                                                 struct lustre_swap_layouts)
 240 #define LL_IOC_HSM_ACTION               _IOR('f', 220, \
 241                                                 struct hsm_current_action)
 242 /* see <lustre_lib.h> for ioctl numbers 221-232 */
 243
 244 #define LL_IOC_LMV_SETSTRIPE        _IOWR('f', 240, struct lmv_user_md)
 245 #define LL_IOC_LMV_GETSTRIPE        _IOWR('f', 241, struct lmv_user_md)
 246 #define LL_IOC_REMOVE_ENTRY         _IOWR('f', 242, __u64)
 247 #define LL_IOC_SET_LEASE                _IOWR('f', 243, long)
 248 #define LL_IOC_GET_LEASE                _IO('f', 244)
 249 #define LL_IOC_HSM_IMPORT               _IOWR('f', 245, struct hsm_user_import)
 250
 251 #define LL_STATFS_LMV      1
 252 #define LL_STATFS_LOV      2
 253 #define LL_STATFS_NODELAY       4
 254
 255 #define IOC_MDC_TYPE        'i'
 256 #define IOC_MDC_LOOKUP    _IOWR(IOC_MDC_TYPE, 20, struct obd_device *)
 257 #define IOC_MDC_GETFILESTRIPE   _IOWR(IOC_MDC_TYPE, 21, struct lov_user_md *)
 258 #define IOC_MDC_GETFILEINFO     _IOWR(IOC_MDC_TYPE, 22, struct lov_user_mds_data *)
 259 #define LL_IOC_MDC_GETINFO      _IOWR(IOC_MDC_TYPE, 23, struct lov_user_mds_data *)
 260
 261 /* Keep these for backward compartability. */
 262 #define LL_IOC_OBD_STATFS       IOC_OBD_STATFS
 263 #define IOC_MDC_GETSTRIPE       IOC_MDC_GETFILESTRIPE
 264
 265
 266 #define MAX_OBD_NAME 128 /* If this changes, a NEW ioctl must be added */
 267
 268 /* Define O_LOV_DELAY_CREATE to be a mask that is not useful for regular
 269  * files, but are unlikely to be used in practice and are not harmful if
 270  * used incorrectly.  O_NOCTTY and FASYNC are only meaningful for character
 271  * devices and are safe for use on new files (See LU-812, LU-4209). */
 272 #define O_LOV_DELAY_CREATE      (O_NOCTTY | FASYNC)
 273
 274 #define LL_FILE_IGNORE_LOCK     0x00000001
 275 #define LL_FILE_GROUP_LOCKED    0x00000002
 276 #define LL_FILE_READAHEA        0x00000004
 277 #define LL_FILE_LOCKED_DIRECTIO 0x00000008 /* client-side locks with dio */
 278 #define LL_FILE_LOCKLESS_IO     0x00000010 /* server-side locks with cio */
 279 #define LL_FILE_RMTACL    0x00000020
 280
 281 #define LOV_USER_MAGIC_V1 0x0BD10BD0
 282 #define LOV_USER_MAGIC    LOV_USER_MAGIC_V1
 283 #define LOV_USER_MAGIC_JOIN_V1 0x0BD20BD0
 284 #define LOV_USER_MAGIC_V3 0x0BD30BD0
 285
 286 #define LMV_MAGIC_V1      0x0CD10CD0    /*normal stripe lmv magic */
 287 #define LMV_USER_MAGIC    0x0CD20CD0    /*default lmv magic*/
 288
 289 #define LOV_PATTERN_RAID0 0x001
 290 #define LOV_PATTERN_RAID1 0x002
 291 #define LOV_PATTERN_FIRST 0x100
 292
 293 #define LOV_MAXPOOLNAME 16
 294 #define LOV_POOLNAMEF "%.16s"
 295
 296 #define LOV_MIN_STRIPE_BITS 16   /* maximum PAGE_SIZE (ia64), power of 2 */
 297 #define LOV_MIN_STRIPE_SIZE (1 << LOV_MIN_STRIPE_BITS)
 298 #define LOV_MAX_STRIPE_COUNT_OLD 160
 299 /* This calculation is crafted so that input of 4096 will result in 160
 300  * which in turn is equal to old maximal stripe count.
 301  * XXX: In fact this is too simplified for now, what it also need is to get
 302  * ea_type argument to clearly know how much space each stripe consumes.
 303  *
 304  * The limit of 12 pages is somewhat arbitrary, but is a reasonably large
 305  * allocation that is sufficient for the current generation of systems.
 306  *
 307  * (max buffer size - lov+rpc header) / sizeof(struct lov_ost_data_v1) */
 308 #define LOV_MAX_STRIPE_COUNT 2000  /* ((12 * 4096 - 256) / 24) */
 309 #define LOV_ALL_STRIPES       0xffff /* only valid for directories */
 310 #define LOV_V1_INSANE_STRIPE_COUNT 65532 /* maximum stripe count bz13933 */
 311
 312 #define lov_user_ost_data lov_user_ost_data_v1
 313 struct lov_user_ost_data_v1 {     /* per-stripe data structure */
 314         struct ost_id l_ost_oi;   /* OST object ID */
 315         __u32 l_ost_gen;          /* generation of this OST index */
 316         __u32 l_ost_idx;          /* OST index in LOV */
 317 } __attribute__((packed));
 318
 319 #define lov_user_md lov_user_md_v1
 320 struct lov_user_md_v1 {    /* LOV EA user data (host-endian) */
 321         __u32 lmm_magic;          /* magic number = LOV_USER_MAGIC_V1 */
 322         __u32 lmm_pattern;      /* LOV_PATTERN_RAID0, LOV_PATTERN_RAID1 */
 323         struct ost_id lmm_oi;     /* LOV object ID */
 324         __u32 lmm_stripe_size;    /* size of stripe in bytes */
 325         __u16 lmm_stripe_count;   /* num stripes in use for this object */
 326         union {
 327                 __u16 lmm_stripe_offset;  /* starting stripe offset in
 328                                            * lmm_objects, use when writing */
 329                 __u16 lmm_layout_gen;     /* layout generation number
 330                                            * used when reading */
 331         };
 332         struct lov_user_ost_data_v1 lmm_objects[0]; /* per-stripe data */
 333 } __attribute__((packed,  __may_alias__));
 334
 335 struct lov_user_md_v3 {    /* LOV EA user data (host-endian) */
 336         __u32 lmm_magic;          /* magic number = LOV_USER_MAGIC_V3 */
 337         __u32 lmm_pattern;      /* LOV_PATTERN_RAID0, LOV_PATTERN_RAID1 */
 338         struct ost_id lmm_oi;     /* LOV object ID */
 339         __u32 lmm_stripe_size;    /* size of stripe in bytes */
 340         __u16 lmm_stripe_count;   /* num stripes in use for this object */
 341         union {
 342                 __u16 lmm_stripe_offset;  /* starting stripe offset in
 343                                            * lmm_objects, use when writing */
 344                 __u16 lmm_layout_gen;     /* layout generation number
 345                                            * used when reading */
 346         };
 347         char  lmm_pool_name[LOV_MAXPOOLNAME]; /* pool name */
 348         struct lov_user_ost_data_v1 lmm_objects[0]; /* per-stripe data */
 349 } __attribute__((packed));
 350
 351 static inline __u32 lov_user_md_size(__u16 stripes, __u32 lmm_magic)
 352 {
 353         if (lmm_magic == LOV_USER_MAGIC_V3)
 354                 return sizeof(struct lov_user_md_v3) +
 355                                 stripes * sizeof(struct lov_user_ost_data_v1);
 356         else
 357                 return sizeof(struct lov_user_md_v1) +
 358                                 stripes * sizeof(struct lov_user_ost_data_v1);
 359 }
 360
 361 /* Compile with -D_LARGEFILE64_SOURCE or -D_GNU_SOURCE (or #define) to
 362  * use this.  It is unsafe to #define those values in this header as it
 363  * is possible the application has already #included <sys/stat.h>. */
 364 #ifdef HAVE_LOV_USER_MDS_DATA
 365 #define lov_user_mds_data lov_user_mds_data_v1
 366 struct lov_user_mds_data_v1 {
 367         lstat_t lmd_st;          /* MDS stat struct */
 368         struct lov_user_md_v1 lmd_lmm;  /* LOV EA V1 user data */
 369 } __attribute__((packed));
 370
 371 struct lov_user_mds_data_v3 {
 372         lstat_t lmd_st;          /* MDS stat struct */
 373         struct lov_user_md_v3 lmd_lmm;  /* LOV EA V3 user data */
 374 } __attribute__((packed));
 375 #endif
 376
 377 /* keep this to be the same size as lov_user_ost_data_v1 */
 378 struct lmv_user_mds_data {
 379         struct lu_fid   lum_fid;
 380         __u32           lum_padding;
 381         __u32           lum_mds;
 382 };
 383
 384 /* lum_type */
 385 enum {
 386         LMV_STRIPE_TYPE = 0,
 387         LMV_DEFAULT_TYPE = 1,
 388 };
 389
 390 #define lmv_user_md lmv_user_md_v1
 391 struct lmv_user_md_v1 {
 392         __u32   lum_magic;       /* must be the first field */
 393         __u32   lum_stripe_count;  /* dirstripe count */
 394         __u32   lum_stripe_offset; /* MDT idx for default dirstripe */
 395         __u32   lum_hash_type;     /* Dir stripe policy */
 396         __u32   lum_type;         /* LMV type: default or normal */
 397         __u32   lum_padding1;
 398         __u32   lum_padding2;
 399         __u32   lum_padding3;
 400         char    lum_pool_name[LOV_MAXPOOLNAME];
 401         struct  lmv_user_mds_data  lum_objects[0];
 402 };
 403
 404 static inline int lmv_user_md_size(int stripes, int lmm_magic)
 405 {
 406         return sizeof(struct lmv_user_md) +
 407                       stripes * sizeof(struct lmv_user_mds_data);
 408 }
 409
 410 extern void lustre_swab_lmv_user_md(struct lmv_user_md *lum);
 411
 412 struct ll_recreate_obj {
 413         __u64 lrc_id;
 414         __u32 lrc_ost_idx;
 415 };
 416
 417 struct ll_fid {
 418         __u64 id;        /* holds object id */
 419         __u32 generation; /* holds object generation */
 420         __u32 f_type;     /* holds object type or stripe idx when passing it to
 421                            * OST for saving into EA. */
 422 };
 423
 424 #define UUID_MAX        40
 425 struct obd_uuid {
 426         char uuid[UUID_MAX];
 427 };
 428
 429 static inline bool obd_uuid_equals(const struct obd_uuid *u1,
 430                                    const struct obd_uuid *u2)
 431 {
 432         return strcmp((char *)u1->uuid, (char *)u2->uuid) == 0;
 433 }
 434
 435 static inline int obd_uuid_empty(struct obd_uuid *uuid)
 436 {
 437         return uuid->uuid[0] == '\0';
 438 }
 439
 440 static inline void obd_str2uuid(struct obd_uuid *uuid, const char *tmp)
 441 {
 442         strncpy((char *)uuid->uuid, tmp, sizeof(*uuid));
 443         uuid->uuid[sizeof(*uuid) - 1] = '\0';
 444 }
 445
 446 /* For printf's only, make sure uuid is terminated */
 447 static inline char *obd_uuid2str(const struct obd_uuid *uuid)
 448 {
 449         if (uuid->uuid[sizeof(*uuid) - 1] != '\0') {
 450                 /* Obviously not safe, but for printfs, no real harm done...
 451                    we're always null-terminated, even in a race. */
 452                 static char temp[sizeof(*uuid)];
 453                 memcpy(temp, uuid->uuid, sizeof(*uuid) - 1);
 454                 temp[sizeof(*uuid) - 1] = '\0';
 455                 return temp;
 456         }
 457         return (char *)(uuid->uuid);
 458 }
 459
 460 /* Extract fsname from uuid (or target name) of a target
 461    e.g. (myfs-OST0007_UUID -> myfs)
 462    see also deuuidify. */
 463 static inline void obd_uuid2fsname(char *buf, char *uuid, int buflen)
 464 {
 465         char *p;
 466
 467         strncpy(buf, uuid, buflen - 1);
 468         buf[buflen - 1] = '\0';
 469         p = strrchr(buf, '-');
 470         if (p)
 471            *p = '\0';
 472 }
 473
 474 /* printf display format
 475    e.g. printf("file FID is "DFID"\n", PFID(fid)); */
 476 #define FID_NOBRACE_LEN 40
 477 #define FID_LEN (FID_NOBRACE_LEN + 2)
 478 #define DFID_NOBRACE LPX64":0x%x:0x%x"
 479 #define DFID "["DFID_NOBRACE"]"
 480 #define PFID(fid)     \
 481         (fid)->f_seq, \
 482         (fid)->f_oid, \
 483         (fid)->f_ver
 484
 485 /* scanf input parse format -- strip '[' first.
 486    e.g. sscanf(fidstr, SFID, RFID(&fid)); */
 487 /* #define SFID "0x"LPX64i":0x"LPSZX":0x"LPSZX""
 488 liblustreapi.c:2893: warning: format '%lx' expects type 'long unsigned int *', but argument 4 has type 'unsigned int *'
 489 liblustreapi.c:2893: warning: format '%lx' expects type 'long unsigned int *', but argument 5 has type 'unsigned int *'
 490 */
 491 #define SFID "0x"LPX64i":0x%x:0x%x"
 492 #define RFID(fid)     \
 493         &((fid)->f_seq), \
 494         &((fid)->f_oid), \
 495         &((fid)->f_ver)
 496
 497
 498 /********* Quotas **********/
 499
 500 /* these must be explicitly translated into linux Q_* in ll_dir_ioctl */
 501 #define LUSTRE_Q_QUOTAON    0x800002     /* turn quotas on */
 502 #define LUSTRE_Q_QUOTAOFF   0x800003     /* turn quotas off */
 503 #define LUSTRE_Q_GETINFO    0x800005     /* get information about quota files */
 504 #define LUSTRE_Q_SETINFO    0x800006     /* set information about quota files */
 505 #define LUSTRE_Q_GETQUOTA   0x800007     /* get user quota structure */
 506 #define LUSTRE_Q_SETQUOTA   0x800008     /* set user quota structure */
 507 /* lustre-specific control commands */
 508 #define LUSTRE_Q_INVALIDATE  0x80000b     /* invalidate quota data */
 509 #define LUSTRE_Q_FINVALIDATE 0x80000c     /* invalidate filter quota data */
 510
 511 #define UGQUOTA 2       /* set both USRQUOTA and GRPQUOTA */
 512
 513 struct if_quotacheck {
 514         char                obd_type[16];
 515         struct obd_uuid  obd_uuid;
 516 };
 517
 518 #define IDENTITY_DOWNCALL_MAGIC 0x6d6dd629
 519
 520 /* permission */
 521 #define N_PERMS_MAX      64
 522
 523 struct perm_downcall_data {
 524         __u64 pdd_nid;
 525         __u32 pdd_perm;
 526         __u32 pdd_padding;
 527 };
 528
 529 struct identity_downcall_data {
 530         __u32                       idd_magic;
 531         __u32                       idd_err;
 532         __u32                       idd_uid;
 533         __u32                       idd_gid;
 534         __u32                       idd_nperms;
 535         __u32                       idd_ngroups;
 536         struct perm_downcall_data idd_perms[N_PERMS_MAX];
 537         __u32                       idd_groups[0];
 538 };
 539
 540 /* for non-mapped uid/gid */
 541 #define NOBODY_UID      99
 542 #define NOBODY_GID      99
 543
 544 #define INVALID_ID      (-1)
 545
 546 enum {
 547         RMT_LSETFACL    = 1,
 548         RMT_LGETFACL    = 2,
 549         RMT_RSETFACL    = 3,
 550         RMT_RGETFACL    = 4
 551 };
 552
 553 #ifdef NEED_QUOTA_DEFS
 554 #ifndef QIF_BLIMITS
 555 #define QIF_BLIMITS     1
 556 #define QIF_SPACE       2
 557 #define QIF_ILIMITS     4
 558 #define QIF_INODES      8
 559 #define QIF_BTIME       16
 560 #define QIF_ITIME       32
 561 #define QIF_LIMITS      (QIF_BLIMITS | QIF_ILIMITS)
 562 #define QIF_USAGE       (QIF_SPACE | QIF_INODES)
 563 #define QIF_TIMES       (QIF_BTIME | QIF_ITIME)
 564 #define QIF_ALL  (QIF_LIMITS | QIF_USAGE | QIF_TIMES)
 565 #endif
 566
 567 #endif /* !__KERNEL__ */
 568
 569 /* lustre volatile file support
 570  * file name header: .^L^S^T^R:volatile"
 571  */
 572 #define LUSTRE_VOLATILE_HDR     ".\x0c\x13\x14\x12:VOLATILE"
 573 #define LUSTRE_VOLATILE_HDR_LEN 14
 574 /* hdr + MDT index */
 575 #define LUSTRE_VOLATILE_IDX     LUSTRE_VOLATILE_HDR":%.4X:"
 576
 577 typedef enum lustre_quota_version {
 578         LUSTRE_QUOTA_V2 = 1
 579 } lustre_quota_version_t;
 580
 581 /* XXX: same as if_dqinfo struct in kernel */
 582 struct obd_dqinfo {
 583         __u64 dqi_bgrace;
 584         __u64 dqi_igrace;
 585         __u32 dqi_flags;
 586         __u32 dqi_valid;
 587 };
 588
 589 /* XXX: same as if_dqblk struct in kernel, plus one padding */
 590 struct obd_dqblk {
 591         __u64 dqb_bhardlimit;
 592         __u64 dqb_bsoftlimit;
 593         __u64 dqb_curspace;
 594         __u64 dqb_ihardlimit;
 595         __u64 dqb_isoftlimit;
 596         __u64 dqb_curinodes;
 597         __u64 dqb_btime;
 598         __u64 dqb_itime;
 599         __u32 dqb_valid;
 600         __u32 dqb_padding;
 601 };
 602
 603 enum {
 604         QC_GENERAL      = 0,
 605         QC_MDTIDX       = 1,
 606         QC_OSTIDX       = 2,
 607         QC_UUID  = 3
 608 };
 609
 610 struct if_quotactl {
 611         __u32              qc_cmd;
 612         __u32              qc_type;
 613         __u32              qc_id;
 614         __u32              qc_stat;
 615         __u32              qc_valid;
 616         __u32              qc_idx;
 617         struct obd_dqinfo       qc_dqinfo;
 618         struct obd_dqblk        qc_dqblk;
 619         char                obd_type[16];
 620         struct obd_uuid  obd_uuid;
 621 };
 622
 623 /* swap layout flags */
 624 #define SWAP_LAYOUTS_CHECK_DV1          (1 << 0)
 625 #define SWAP_LAYOUTS_CHECK_DV2          (1 << 1)
 626 #define SWAP_LAYOUTS_KEEP_MTIME         (1 << 2)
 627 #define SWAP_LAYOUTS_KEEP_ATIME         (1 << 3)
 628
 629 /* Swap XATTR_NAME_HSM as well, only on the MDT so far */
 630 #define SWAP_LAYOUTS_MDS_HSM            (1 << 31)
 631 struct lustre_swap_layouts {
 632         __u64   sl_flags;
 633         __u32   sl_fd;
 634         __u32   sl_gid;
 635         __u64   sl_dv1;
 636         __u64   sl_dv2;
 637 };
 638
 639
 640 /********* Changelogs **********/
 641 /** Changelog record types */
 642 enum changelog_rec_type {
 643         CL_MARK     = 0,
 644         CL_CREATE   = 1,  /* namespace */
 645         CL_MKDIR    = 2,  /* namespace */
 646         CL_HARDLINK = 3,  /* namespace */
 647         CL_SOFTLINK = 4,  /* namespace */
 648         CL_MKNOD    = 5,  /* namespace */
 649         CL_UNLINK   = 6,  /* namespace */
 650         CL_RMDIR    = 7,  /* namespace */
 651         CL_RENAME   = 8,  /* namespace */
 652         CL_EXT      = 9,  /* namespace extended record (2nd half of rename) */
 653         CL_OPEN     = 10, /* not currently used */
 654         CL_CLOSE    = 11, /* may be written to log only with mtime change */
 655         CL_LAYOUT   = 12, /* file layout/striping modified */
 656         CL_TRUNC    = 13,
 657         CL_SETATTR  = 14,
 658         CL_XATTR    = 15,
 659         CL_HSM      = 16, /* HSM specific events, see flags */
 660         CL_MTIME    = 17, /* Precedence: setattr > mtime > ctime > atime */
 661         CL_CTIME    = 18,
 662         CL_ATIME    = 19,
 663         CL_LAST
 664 };
 665
 666 static inline const char *changelog_type2str(int type) {
 667         static const char *changelog_str[] = {
 668                 "MARK",  "CREAT", "MKDIR", "HLINK", "SLINK", "MKNOD", "UNLNK",
 669                 "RMDIR", "RENME", "RNMTO", "OPEN",  "CLOSE", "LYOUT", "TRUNC",
 670                 "SATTR", "XATTR", "HSM",   "MTIME", "CTIME", "ATIME",
 671         };
 672
 673         if (type >= 0 && type < CL_LAST)
 674                 return changelog_str[type];
 675         return NULL;
 676 }
 677
 678 /* per-record flags */
 679 #define CLF_VERSION     0x1000
 680 #define CLF_EXT_VERSION 0x2000
 681 #define CLF_FLAGSHIFT   12
 682 #define CLF_FLAGMASK    ((1U << CLF_FLAGSHIFT) - 1)
 683 #define CLF_VERMASK     (~CLF_FLAGMASK)
 684 /* Anything under the flagmask may be per-type (if desired) */
 685 /* Flags for unlink */
 686 #define CLF_UNLINK_LAST       0x0001 /* Unlink of last hardlink */
 687 #define CLF_UNLINK_HSM_EXISTS 0x0002 /* File has something in HSM */
 688                                      /* HSM cleaning needed */
 689 /* Flags for rename */
 690 #define CLF_RENAME_LAST       0x0001 /* rename unlink last hardlink of target */
 691
 692 /* Flags for HSM */
 693 /* 12b used (from high weight to low weight):
 694  * 2b for flags
 695  * 3b for event
 696  * 7b for error code
 697  */
 698 #define CLF_HSM_ERR_L   0 /* HSM return code, 7 bits */
 699 #define CLF_HSM_ERR_H   6
 700 #define CLF_HSM_EVENT_L      7 /* HSM event, 3 bits, see enum hsm_event */
 701 #define CLF_HSM_EVENT_H      9
 702 #define CLF_HSM_FLAG_L      10 /* HSM flags, 2 bits, 1 used, 1 spare */
 703 #define CLF_HSM_FLAG_H      11
 704 #define CLF_HSM_SPARE_L     12 /* 4 spare bits */
 705 #define CLF_HSM_SPARE_H     15
 706 #define CLF_HSM_LAST    15
 707
 708 /* Remove bits higher than _h, then extract the value
 709  * between _h and _l by shifting lower weigth to bit 0. */
 710 #define CLF_GET_BITS(_b, _h, _l) (((_b << (CLF_HSM_LAST - _h)) & 0xFFFF) \
 711                                    >> (CLF_HSM_LAST - _h + _l))
 712
 713 #define CLF_HSM_SUCCESS      0x00
 714 #define CLF_HSM_MAXERROR     0x7E
 715 #define CLF_HSM_ERROVERFLOW  0x7F
 716
 717 #define CLF_HSM_DIRTY   1 /* file is dirty after HSM request end */
 718
 719 /* 3 bits field => 8 values allowed */
 720 enum hsm_event {
 721         HE_ARCHIVE      = 0,
 722         HE_RESTORE      = 1,
 723         HE_CANCEL       = 2,
 724         HE_RELEASE      = 3,
 725         HE_REMOVE       = 4,
 726         HE_STATE        = 5,
 727         HE_SPARE1       = 6,
 728         HE_SPARE2       = 7,
 729 };
 730
 731 static inline enum hsm_event hsm_get_cl_event(__u16 flags)
 732 {
 733         return CLF_GET_BITS(flags, CLF_HSM_EVENT_H, CLF_HSM_EVENT_L);
 734 }
 735
 736 static inline void hsm_set_cl_event(int *flags, enum hsm_event he)
 737 {
 738         *flags |= (he << CLF_HSM_EVENT_L);
 739 }
 740
 741 static inline __u16 hsm_get_cl_flags(int flags)
 742 {
 743         return CLF_GET_BITS(flags, CLF_HSM_FLAG_H, CLF_HSM_FLAG_L);
 744 }
 745
 746 static inline void hsm_set_cl_flags(int *flags, int bits)
 747 {
 748         *flags |= (bits << CLF_HSM_FLAG_L);
 749 }
 750
 751 static inline int hsm_get_cl_error(int flags)
 752 {
 753         return CLF_GET_BITS(flags, CLF_HSM_ERR_H, CLF_HSM_ERR_L);
 754 }
 755
 756 static inline void hsm_set_cl_error(int *flags, int error)
 757 {
 758         *flags |= (error << CLF_HSM_ERR_L);
 759 }
 760
 761 #define CR_MAXSIZE cfs_size_round(2*NAME_MAX + 1 + \
 762                                   sizeof(struct changelog_ext_rec))
 763
 764 struct changelog_rec {
 765         __u16            cr_namelen;
 766         __u16            cr_flags; /**< (flags&CLF_FLAGMASK)|CLF_VERSION */
 767         __u32            cr_type;  /**< \a changelog_rec_type */
 768         __u64            cr_index; /**< changelog record number */
 769         __u64            cr_prev;  /**< last index for this target fid */
 770         __u64            cr_time;
 771         union {
 772                 lustre_fid    cr_tfid;  /**< target fid */
 773                 __u32    cr_markerflags; /**< CL_MARK flags */
 774         };
 775         lustre_fid          cr_pfid;    /**< parent fid */
 776         char              cr_name[0];     /**< last element */
 777 } __attribute__((packed));
 778
 779 /* changelog_ext_rec is 2*sizeof(lu_fid) bigger than changelog_rec, to save
 780  * space, only rename uses changelog_ext_rec, while others use changelog_rec to
 781  * store records.
 782  */
 783 struct changelog_ext_rec {
 784         __u16                   cr_namelen;
 785         __u16                   cr_flags; /**< (flags & CLF_FLAGMASK) |
 786                                                 CLF_EXT_VERSION */
 787         __u32                   cr_type;  /**< \a changelog_rec_type */
 788         __u64                   cr_index; /**< changelog record number */
 789         __u64                   cr_prev;  /**< last index for this target fid */
 790         __u64                   cr_time;
 791         union {
 792                 lustre_fid      cr_tfid;        /**< target fid */
 793                 __u32           cr_markerflags; /**< CL_MARK flags */
 794         };
 795         lustre_fid              cr_pfid;        /**< target parent fid */
 796         lustre_fid              cr_sfid;        /**< source fid, or zero */
 797         lustre_fid              cr_spfid;       /**< source parent fid, or zero */
 798         char                    cr_name[0];     /**< last element */
 799 } __attribute__((packed));
 800
 801 #define CHANGELOG_REC_EXTENDED(rec) \
 802         (((rec)->cr_flags & CLF_VERMASK) == CLF_EXT_VERSION)
 803
 804 static inline int changelog_rec_size(struct changelog_rec *rec)
 805 {
 806         return CHANGELOG_REC_EXTENDED(rec) ? sizeof(struct changelog_ext_rec):
 807                                              sizeof(*rec);
 808 }
 809
 810 static inline char *changelog_rec_name(struct changelog_rec *rec)
 811 {
 812         return CHANGELOG_REC_EXTENDED(rec) ?
 813                 ((struct changelog_ext_rec *)rec)->cr_name: rec->cr_name;
 814 }
 815
 816 static inline int changelog_rec_snamelen(struct changelog_ext_rec *rec)
 817 {
 818         return rec->cr_namelen - strlen(rec->cr_name) - 1;
 819 }
 820
 821 static inline char *changelog_rec_sname(struct changelog_ext_rec *rec)
 822 {
 823         return rec->cr_name + strlen(rec->cr_name) + 1;
 824 }
 825
 826 struct ioc_changelog {
 827         __u64 icc_recno;
 828         __u32 icc_mdtindex;
 829         __u32 icc_id;
 830         __u32 icc_flags;
 831 };
 832
 833 enum changelog_message_type {
 834         CL_RECORD = 10, /* message is a changelog_rec */
 835         CL_EOF    = 11, /* at end of current changelog */
 836 };
 837
 838 /********* Misc **********/
 839
 840 struct ioc_data_version {
 841         __u64 idv_version;
 842         __u64 idv_flags;     /* See LL_DV_xxx */
 843 };
 844 #define LL_DV_NOFLUSH 0x01   /* Do not take READ EXTENT LOCK before sampling
 845                                 version. Dirty caches are left unchanged. */
 846
 847 #ifndef offsetof
 848 # define offsetof(typ,memb)     ((unsigned long)((char *)&(((typ *)0)->memb)))
 849 #endif
 850
 851 #define dot_lustre_name ".lustre"
 852
 853
 854 /********* HSM **********/
 855
 856 /** HSM per-file state
 857  * See HSM_FLAGS below.
 858  */
 859 enum hsm_states {
 860         HS_EXISTS       = 0x00000001,
 861         HS_DIRTY        = 0x00000002,
 862         HS_RELEASED     = 0x00000004,
 863         HS_ARCHIVED     = 0x00000008,
 864         HS_NORELEASE    = 0x00000010,
 865         HS_NOARCHIVE    = 0x00000020,
 866         HS_LOST         = 0x00000040,
 867 };
 868
 869 /* HSM user-setable flags. */
 870 #define HSM_USER_MASK   (HS_NORELEASE | HS_NOARCHIVE | HS_DIRTY)
 871
 872 /* Other HSM flags. */
 873 #define HSM_STATUS_MASK (HS_EXISTS | HS_LOST | HS_RELEASED | HS_ARCHIVED)
 874
 875 /*
 876  * All HSM-related possible flags that could be applied to a file.
 877  * This should be kept in sync with hsm_states.
 878  */
 879 #define HSM_FLAGS_MASK  (HSM_USER_MASK | HSM_STATUS_MASK)
 880
 881 /**
 882  * HSM request progress state
 883  */
 884 enum hsm_progress_states {
 885         HPS_WAITING     = 1,
 886         HPS_RUNNING     = 2,
 887         HPS_DONE        = 3,
 888 };
 889 #define HPS_NONE        0
 890
 891 static inline char *hsm_progress_state2name(enum hsm_progress_states s)
 892 {
 893         switch  (s) {
 894         case HPS_WAITING:       return "waiting";
 895         case HPS_RUNNING:       return "running";
 896         case HPS_DONE:          return "done";
 897         default:                return "unknown";
 898         }
 899 }
 900
 901 struct hsm_extent {
 902         __u64 offset;
 903         __u64 length;
 904 } __attribute__((packed));
 905
 906 /**
 907  * Current HSM states of a Lustre file.
 908  *
 909  * This structure purpose is to be sent to user-space mainly. It describes the
 910  * current HSM flags and in-progress action.
 911  */
 912 struct hsm_user_state {
 913         /** Current HSM states, from enum hsm_states. */
 914         __u32                   hus_states;
 915         __u32                   hus_archive_id;
 916         /**  The current undergoing action, if there is one */
 917         __u32                   hus_in_progress_state;
 918         __u32                   hus_in_progress_action;
 919         struct hsm_extent       hus_in_progress_location;
 920         char                    hus_extended_info[];
 921 };
 922
 923 struct hsm_state_set_ioc {
 924         struct lu_fid   hssi_fid;
 925         __u64           hssi_setmask;
 926         __u64           hssi_clearmask;
 927 };
 928
 929 /*
 930  * This structure describes the current in-progress action for a file.
 931  * it is returned to user space and send over the wire
 932  */
 933 struct hsm_current_action {
 934         /**  The current undergoing action, if there is one */
 935         /* state is one of hsm_progress_states */
 936         __u32                   hca_state;
 937         /* action is one of hsm_user_action */
 938         __u32                   hca_action;
 939         struct hsm_extent       hca_location;
 940 };
 941
 942 /***** HSM user requests ******/
 943 /* User-generated (lfs/ioctl) request types */
 944 enum hsm_user_action {
 945         HUA_NONE    =  1, /* no action (noop) */
 946         HUA_ARCHIVE = 10, /* copy to hsm */
 947         HUA_RESTORE = 11, /* prestage */
 948         HUA_RELEASE = 12, /* drop ost objects */
 949         HUA_REMOVE  = 13, /* remove from archive */
 950         HUA_CANCEL  = 14  /* cancel a request */
 951 };
 952
 953 static inline char *hsm_user_action2name(enum hsm_user_action  a)
 954 {
 955         switch  (a) {
 956         case HUA_NONE:    return "NOOP";
 957         case HUA_ARCHIVE: return "ARCHIVE";
 958         case HUA_RESTORE: return "RESTORE";
 959         case HUA_RELEASE: return "RELEASE";
 960         case HUA_REMOVE:  return "REMOVE";
 961         case HUA_CANCEL:  return "CANCEL";
 962         default:          return "UNKNOWN";
 963         }
 964 }
 965
 966 /*
 967  * List of hr_flags (bit field)
 968  */
 969 #define HSM_FORCE_ACTION 0x0001
 970 /* used by CT, connot be set by user */
 971 #define HSM_GHOST_COPY   0x0002
 972
 973 /**
 974  * Contains all the fixed part of struct hsm_user_request.
 975  *
 976  */
 977 struct hsm_request {
 978         __u32 hr_action;        /* enum hsm_user_action */
 979         __u32 hr_archive_id;    /* archive id, used only with HUA_ARCHIVE */
 980         __u64 hr_flags;         /* request flags */
 981         __u32 hr_itemcount;     /* item count in hur_user_item vector */
 982         __u32 hr_data_len;
 983 };
 984
 985 struct hsm_user_item {
 986        lustre_fid       hui_fid;
 987        struct hsm_extent hui_extent;
 988 } __attribute__((packed));
 989
 990 struct hsm_user_request {
 991         struct hsm_request      hur_request;
 992         struct hsm_user_item    hur_user_item[0];
 993         /* extra data blob at end of struct (after all
 994          * hur_user_items), only use helpers to access it
 995          */
 996 } __attribute__((packed));
 997
 998 /** Return pointer to data field in a hsm user request */
 999 static inline void *hur_data(struct hsm_user_request *hur)
1000 {
1001         return &(hur->hur_user_item[hur->hur_request.hr_itemcount]);
1002 }
1003
1004 /** Compute the current length of the provided hsm_user_request. */
1005 static inline int hur_len(struct hsm_user_request *hur)
1006 {
1007         return offsetof(struct hsm_user_request,
1008                         hur_user_item[hur->hur_request.hr_itemcount]) +
1009                 hur->hur_request.hr_data_len;
1010 }
1011
1012 /****** HSM RPCs to copytool *****/
1013 /* Message types the copytool may receive */
1014 enum hsm_message_type {
1015         HMT_ACTION_LIST = 100, /* message is a hsm_action_list */
1016 };
1017
1018 /* Actions the copytool may be instructed to take for a given action_item */
1019 enum hsm_copytool_action {
1020         HSMA_NONE    = 10, /* no action */
1021         HSMA_ARCHIVE = 20, /* arbitrary offset */
1022         HSMA_RESTORE = 21,
1023         HSMA_REMOVE  = 22,
1024         HSMA_CANCEL  = 23
1025 };
1026
1027 static inline char *hsm_copytool_action2name(enum hsm_copytool_action  a)
1028 {
1029         switch  (a) {
1030         case HSMA_NONE:    return "NOOP";
1031         case HSMA_ARCHIVE: return "ARCHIVE";
1032         case HSMA_RESTORE: return "RESTORE";
1033         case HSMA_REMOVE:  return "REMOVE";
1034         case HSMA_CANCEL:  return "CANCEL";
1035         default:           return "UNKNOWN";
1036         }
1037 }
1038
1039 /* Copytool item action description */
1040 struct hsm_action_item {
1041         __u32      hai_len;     /* valid size of this struct */
1042         __u32      hai_action;  /* hsm_copytool_action, but use known size */
1043         lustre_fid hai_fid;     /* Lustre FID to operated on */
1044         lustre_fid hai_dfid;    /* fid used for data access */
1045         struct hsm_extent hai_extent;  /* byte range to operate on */
1046         __u64      hai_cookie;  /* action cookie from coordinator */
1047         __u64      hai_gid;     /* grouplock id */
1048         char       hai_data[0]; /* variable length */
1049 } __attribute__((packed));
1050
1051 /*
1052  * helper function which print in hexa the first bytes of
1053  * hai opaque field
1054  * \param hai [IN] record to print
1055  * \param buffer [OUT] output buffer
1056  * \param len [IN] max buffer len
1057  * \retval buffer
1058  */
1059 static inline char *hai_dump_data_field(struct hsm_action_item *hai,
1060                                         char *buffer, int len)
1061 {
1062         int i, sz, data_len;
1063         char *ptr;
1064
1065         ptr = buffer;
1066         sz = len;
1067         data_len = hai->hai_len - sizeof(*hai);
1068         for (i = 0 ; (i < data_len) && (sz > 0) ; i++)
1069         {
1070                 int cnt;
1071
1072                 cnt = snprintf(ptr, sz, "%.2X",
1073                                (unsigned char)hai->hai_data[i]);
1074                 ptr += cnt;
1075                 sz -= cnt;
1076         }
1077         *ptr = '\0';
1078         return buffer;
1079 }
1080
1081 /* Copytool action list */
1082 #define HAL_VERSION 1
1083 #define HAL_MAXSIZE LNET_MTU /* bytes, used in userspace only */
1084 struct hsm_action_list {
1085         __u32 hal_version;
1086         __u32 hal_count;       /* number of hai's to follow */
1087         __u64 hal_compound_id; /* returned by coordinator */
1088         __u64 hal_flags;
1089         __u32 hal_archive_id; /* which archive backend */
1090         __u32 padding1;
1091         char  hal_fsname[0];   /* null-terminated */
1092         /* struct hsm_action_item[hal_count] follows, aligned on 8-byte
1093            boundaries. See hai_zero */
1094 } __attribute__((packed));
1095
1096 #ifndef HAVE_CFS_SIZE_ROUND
1097 static inline int cfs_size_round (int val)
1098 {
1099         return (val + 7) & (~0x7);
1100 }
1101 #define HAVE_CFS_SIZE_ROUND
1102 #endif
1103
1104 /* Return pointer to first hai in action list */
1105 static inline struct hsm_action_item * hai_zero(struct hsm_action_list *hal)
1106 {
1107         return (struct hsm_action_item *)(hal->hal_fsname +
1108                                           cfs_size_round(strlen(hal-> \
1109                                                                 hal_fsname)
1110                                                          + 1));
1111 }
1112 /* Return pointer to next hai */
1113 static inline struct hsm_action_item * hai_next(struct hsm_action_item *hai)
1114 {
1115         return (struct hsm_action_item *)((char *)hai +
1116                                           cfs_size_round(hai->hai_len));
1117 }
1118
1119 /* Return size of an hsm_action_list */
1120 static inline int hal_size(struct hsm_action_list *hal)
1121 {
1122         int i, sz;
1123         struct hsm_action_item *hai;
1124
1125         sz = sizeof(*hal) + cfs_size_round(strlen(hal->hal_fsname) + 1);
1126         hai = hai_zero(hal);
1127         for (i = 0; i < hal->hal_count; i++, hai = hai_next(hai))
1128                 sz += cfs_size_round(hai->hai_len);
1129
1130         return sz;
1131 }
1132
1133 /* HSM file import
1134  * describe the attributes to be set on imported file
1135  */
1136 struct hsm_user_import {
1137         __u64           hui_size;
1138         __u64           hui_atime;
1139         __u64           hui_mtime;
1140         __u32           hui_atime_ns;
1141         __u32           hui_mtime_ns;
1142         __u32           hui_uid;
1143         __u32           hui_gid;
1144         __u32           hui_mode;
1145         __u32           hui_archive_id;
1146 };
1147
1148 /* Copytool progress reporting */
1149 #define HP_FLAG_COMPLETED 0x01
1150 #define HP_FLAG_RETRY     0x02
1151
1152 struct hsm_progress {
1153         lustre_fid              hp_fid;
1154         __u64                   hp_cookie;
1155         struct hsm_extent       hp_extent;
1156         __u16                   hp_flags;
1157         __u16                   hp_errval; /* positive val */
1158         __u32                   padding;
1159 };
1160
1161 struct hsm_copy {
1162         __u64                   hc_data_version;
1163         __u16                   hc_flags;
1164         __u16                   hc_errval; /* positive val */
1165         __u32                   padding;
1166         struct hsm_action_item  hc_hai;
1167 };
1168
1169 /** @} lustreuser */
1170
1171 #endif /* _LUSTRE_USER_H */