lustre/target/out_handler.c

   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.gnu.org/licenses/gpl-2.0.html
  19  *
  20  * GPL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 2013, 2017, Intel Corporation.
  24  *
  25  * lustre/target/out_handler.c
  26  *
  27  * Object update handler between targets.
  28  *
  29  * Author: di.wang <di.wang@intel.com>
  30  */
  31
  32 #define DEBUG_SUBSYSTEM S_CLASS
  33
  34 #include <llog_swab.h>
  35 #include <lustre_obdo.h>
  36 #include <lustre_swab.h>
  37 #include <lustre_update.h>
  38 #include <md_object.h>
  39 #include <obd_class.h>
  40 #include "tgt_internal.h"
  41
  42 static inline void orr_cpu_to_le(struct out_read_reply *orr_dst,
  43                                  const struct out_read_reply *orr_src)
  44 {
  45         orr_dst->orr_size = cpu_to_le32(orr_src->orr_size);
  46         orr_dst->orr_padding = cpu_to_le32(orr_src->orr_padding);
  47         orr_dst->orr_offset = cpu_to_le64(orr_dst->orr_offset);
  48 }
  49
  50 static void out_reconstruct(const struct lu_env *env, struct dt_device *dt,
  51                             struct dt_object *obj,
  52                             struct object_update_reply *reply,
  53                             int index)
  54 {
  55         CDEBUG(D_HA, "%s: fork reply reply %p index %d: rc = %d\n",
  56                dt_obd_name(dt), reply, index, 0);
  57
  58         object_update_result_insert(reply, NULL, 0, index, 0);
  59 }
  60
  61 typedef void (*out_reconstruct_t)(const struct lu_env *env,
  62                                   struct dt_device *dt,
  63                                   struct dt_object *obj,
  64                                   struct object_update_reply *reply,
  65                                   int index);
  66
  67 static int out_create(struct tgt_session_info *tsi)
  68 {
  69         struct tgt_thread_info  *tti = tgt_th_info(tsi->tsi_env);
  70         struct object_update    *update = tti->tti_u.update.tti_update;
  71         struct dt_object        *obj = tti->tti_u.update.tti_dt_object;
  72         struct dt_object_format *dof = &tti->tti_u.update.tti_update_dof;
  73         struct obdo             *lobdo = &tti->tti_u.update.tti_obdo;
  74         struct lu_attr          *attr = &tti->tti_attr;
  75         struct lu_fid           *fid = NULL;
  76         struct obdo             *wobdo;
  77         size_t                  size;
  78         int                     rc;
  79
  80         ENTRY;
  81
  82         wobdo = object_update_param_get(update, 0, &size);
  83         if (IS_ERR(wobdo) || size != sizeof(*wobdo)) {
  84                 CERROR("%s: obdo is NULL, invalid RPC: rc = %ld\n",
  85                        tgt_name(tsi->tsi_tgt), PTR_ERR(wobdo));
  86                 RETURN(PTR_ERR(wobdo));
  87         }
  88
  89         if (req_capsule_req_need_swab(tsi->tsi_pill))
  90                 lustre_swab_obdo(wobdo);
  91         lustre_get_wire_obdo(NULL, lobdo, wobdo);
  92         la_from_obdo(attr, lobdo, lobdo->o_valid);
  93
  94         dof->dof_type = dt_mode_to_dft(attr->la_mode);
  95         if (update->ou_params_count > 1) {
  96                 fid = object_update_param_get(update, 1, &size);
  97                 if (IS_ERR(fid) || size != sizeof(*fid)) {
  98                         CERROR("%s: invalid fid: rc = %ld\n",
  99                                tgt_name(tsi->tsi_tgt), PTR_ERR(fid));
 100                         RETURN(PTR_ERR(fid));
 101                 }
 102                 if (req_capsule_req_need_swab(tsi->tsi_pill))
 103                         lustre_swab_lu_fid(fid);
 104                 if (!fid_is_sane(fid)) {
 105                         CERROR("%s: invalid fid "DFID": rc = %d\n",
 106                                tgt_name(tsi->tsi_tgt), PFID(fid), -EPROTO);
 107                         RETURN(-EPROTO);
 108                 }
 109         }
 110
 111         if (lu_object_exists(&obj->do_lu))
 112                 RETURN(-EEXIST);
 113
 114         rc = out_tx_create(tsi->tsi_env, obj, attr, fid, dof,
 115                            &tti->tti_tea, tti->tti_tea.ta_handle,
 116                            tti->tti_u.update.tti_update_reply,
 117                            tti->tti_u.update.tti_update_reply_index);
 118
 119         RETURN(rc);
 120 }
 121
 122 static int out_attr_set(struct tgt_session_info *tsi)
 123 {
 124         struct tgt_thread_info  *tti = tgt_th_info(tsi->tsi_env);
 125         struct object_update    *update = tti->tti_u.update.tti_update;
 126         struct lu_attr          *attr = &tti->tti_attr;
 127         struct dt_object        *obj = tti->tti_u.update.tti_dt_object;
 128         struct obdo             *lobdo = &tti->tti_u.update.tti_obdo;
 129         struct obdo             *wobdo;
 130         size_t                   size;
 131         int                      rc;
 132
 133         ENTRY;
 134
 135         wobdo = object_update_param_get(update, 0, &size);
 136         if (IS_ERR(wobdo) || size != sizeof(*wobdo)) {
 137                 CERROR("%s: empty obdo in the update: rc = %ld\n",
 138                        tgt_name(tsi->tsi_tgt), PTR_ERR(wobdo));
 139                 RETURN(PTR_ERR(wobdo));
 140         }
 141
 142         attr->la_valid = 0;
 143         attr->la_valid = 0;
 144
 145         if (req_capsule_req_need_swab(tsi->tsi_pill))
 146                 lustre_swab_obdo(wobdo);
 147         lustre_get_wire_obdo(NULL, lobdo, wobdo);
 148         la_from_obdo(attr, lobdo, lobdo->o_valid);
 149
 150         rc = out_tx_attr_set(tsi->tsi_env, obj, attr, &tti->tti_tea,
 151                              tti->tti_tea.ta_handle,
 152                              tti->tti_u.update.tti_update_reply,
 153                              tti->tti_u.update.tti_update_reply_index);
 154
 155         RETURN(rc);
 156 }
 157
 158 static int out_attr_get(struct tgt_session_info *tsi)
 159 {
 160         const struct lu_env     *env = tsi->tsi_env;
 161         struct tgt_thread_info  *tti = tgt_th_info(env);
 162         struct object_update    *update = tti->tti_u.update.tti_update;
 163         struct obdo             *obdo = &tti->tti_u.update.tti_obdo;
 164         struct lu_attr          *la = &tti->tti_attr;
 165         struct dt_object        *obj = tti->tti_u.update.tti_dt_object;
 166         int                     idx = tti->tti_u.update.tti_update_reply_index;
 167         int                     rc;
 168
 169         ENTRY;
 170
 171         if (unlikely(update->ou_result_size < sizeof(*obdo)))
 172                 return -EPROTO;
 173
 174         if (!lu_object_exists(&obj->do_lu)) {
 175                 /* Usually, this will be called when the master MDT try
 176                  * to init a remote object(see osp_object_init), so if
 177                  * the object does not exist on slave, we need set BANSHEE flag,
 178                  * so the object can be removed from the cache immediately */
 179                 set_bit(LU_OBJECT_HEARD_BANSHEE,
 180                         &obj->do_lu.lo_header->loh_flags);
 181                 RETURN(-ENOENT);
 182         }
 183
 184         dt_read_lock(env, obj, DT_TGT_CHILD);
 185         rc = dt_attr_get(env, obj, la);
 186         if (rc)
 187                 GOTO(out_unlock, rc);
 188
 189         obdo->o_valid = 0;
 190         obdo_from_la(obdo, la, la->la_valid);
 191
 192 out_unlock:
 193         dt_read_unlock(env, obj);
 194
 195         CDEBUG(D_INFO, "%s: insert attr get reply %p index %d: rc = %d\n",
 196                tgt_name(tsi->tsi_tgt), tti->tti_u.update.tti_update_reply,
 197                0, rc);
 198
 199         object_update_result_insert(tti->tti_u.update.tti_update_reply, obdo,
 200                                     sizeof(*obdo), idx, rc);
 201
 202         RETURN(rc);
 203 }
 204
 205 static int out_xattr_get(struct tgt_session_info *tsi)
 206 {
 207         const struct lu_env        *env = tsi->tsi_env;
 208         struct tgt_thread_info     *tti = tgt_th_info(env);
 209         struct object_update       *update = tti->tti_u.update.tti_update;
 210         struct lu_buf              *lbuf = &tti->tti_buf;
 211         struct object_update_reply *reply = tti->tti_u.update.tti_update_reply;
 212         struct dt_object           *obj = tti->tti_u.update.tti_dt_object;
 213         char                       *name;
 214         struct object_update_result *update_result;
 215         int                     idx = tti->tti_u.update.tti_update_reply_index;
 216         int                        rc;
 217
 218         ENTRY;
 219
 220         if (!lu_object_exists(&obj->do_lu)) {
 221                 set_bit(LU_OBJECT_HEARD_BANSHEE,
 222                         &obj->do_lu.lo_header->loh_flags);
 223                 RETURN(-ENOENT);
 224         }
 225
 226         name = object_update_param_get(update, 0, NULL);
 227         if (IS_ERR(name)) {
 228                 CERROR("%s: empty name for xattr get: rc = %ld\n",
 229                        tgt_name(tsi->tsi_tgt), PTR_ERR(name));
 230                 RETURN(PTR_ERR(name));
 231         }
 232
 233         update_result = object_update_result_get(reply, idx, NULL);
 234         if (update_result == NULL) {
 235                 CERROR("%s: empty name for xattr get: rc = %d\n",
 236                        tgt_name(tsi->tsi_tgt), -EPROTO);
 237                 RETURN(-EPROTO);
 238         }
 239
 240         lbuf->lb_len = (int)tti->tti_u.update.tti_update->ou_result_size;
 241         if (lbuf->lb_len == 0)
 242                 lbuf->lb_buf = NULL;
 243         else
 244                 lbuf->lb_buf = update_result->our_data;
 245
 246         dt_read_lock(env, obj, DT_TGT_CHILD);
 247         rc = dt_xattr_get(env, obj, lbuf, name);
 248         dt_read_unlock(env, obj);
 249         if (rc <= 0) {
 250                 lbuf->lb_len = 0;
 251                 if (unlikely(!rc))
 252                         rc = -ENODATA;
 253         } else if (lbuf->lb_buf) {
 254                 lbuf->lb_len = rc;
 255         }
 256         CDEBUG(D_INFO, "%s: "DFID" get xattr %s len %d\n",
 257                tgt_name(tsi->tsi_tgt), PFID(lu_object_fid(&obj->do_lu)),
 258                name, rc);
 259
 260         GOTO(out, rc);
 261
 262 out:
 263         object_update_result_insert(reply, lbuf->lb_buf, lbuf->lb_len, idx, rc);
 264         RETURN(0);
 265 }
 266
 267 static int out_xattr_list(struct tgt_session_info *tsi)
 268 {
 269         const struct lu_env *env = tsi->tsi_env;
 270         struct tgt_thread_info *tti = tgt_th_info(env);
 271         struct lu_buf *lbuf = &tti->tti_buf;
 272         struct object_update_reply *reply = tti->tti_u.update.tti_update_reply;
 273         struct dt_object *obj = tti->tti_u.update.tti_dt_object;
 274         struct object_update_result *update_result;
 275         int idx = tti->tti_u.update.tti_update_reply_index;
 276         int rc;
 277
 278         ENTRY;
 279
 280         if (!lu_object_exists(&obj->do_lu)) {
 281                 set_bit(LU_OBJECT_HEARD_BANSHEE,
 282                         &obj->do_lu.lo_header->loh_flags);
 283                 RETURN(-ENOENT);
 284         }
 285
 286         update_result = object_update_result_get(reply, 0, NULL);
 287         if (!update_result) {
 288                 rc = -EPROTO;
 289                 CERROR("%s: empty buf for xattr list: rc = %d\n",
 290                        tgt_name(tsi->tsi_tgt), rc);
 291                 RETURN(rc);
 292         }
 293
 294         lbuf->lb_len = (int)tti->tti_u.update.tti_update->ou_result_size;
 295         lbuf->lb_buf = update_result->our_data;
 296         if (lbuf->lb_len == 0)
 297                 lbuf->lb_buf = 0;
 298
 299         dt_read_lock(env, obj, DT_TGT_CHILD);
 300         rc = dt_xattr_list(env, obj, lbuf);
 301         dt_read_unlock(env, obj);
 302         if (rc <= 0) {
 303                 lbuf->lb_len = 0;
 304                 if (unlikely(!rc))
 305                         rc = -ENODATA;
 306         } else if (lbuf->lb_buf) {
 307                 lbuf->lb_len = rc;
 308         }
 309
 310         CDEBUG(D_INFO, "%s: "DFID" list xattr len %d\n",
 311                tgt_name(tsi->tsi_tgt), PFID(lu_object_fid(&obj->do_lu)), rc);
 312
 313         /* Since we directly use update_result->our_data as the lbuf->lb_buf,
 314          * then use NULL for result_insert to avoid unnecessary memory copy. */
 315         object_update_result_insert(reply, NULL, lbuf->lb_len, idx, rc);
 316
 317         RETURN(0);
 318 }
 319
 320 static int out_index_lookup(struct tgt_session_info *tsi)
 321 {
 322         const struct lu_env     *env = tsi->tsi_env;
 323         struct tgt_thread_info  *tti = tgt_th_info(env);
 324         struct object_update    *update = tti->tti_u.update.tti_update;
 325         struct dt_object        *obj = tti->tti_u.update.tti_dt_object;
 326         char                    *name;
 327         int                      rc;
 328
 329         ENTRY;
 330
 331         if (unlikely(update->ou_result_size < sizeof(tti->tti_fid1)))
 332                 return -EPROTO;
 333
 334         if (!lu_object_exists(&obj->do_lu))
 335                 RETURN(-ENOENT);
 336
 337         name = object_update_param_get(update, 0, NULL);
 338         if (IS_ERR(name)) {
 339                 CERROR("%s: empty name for lookup: rc = %ld\n",
 340                        tgt_name(tsi->tsi_tgt), PTR_ERR(name));
 341                 RETURN(PTR_ERR(name));
 342         }
 343
 344         dt_read_lock(env, obj, DT_TGT_CHILD);
 345         if (!dt_try_as_dir(env, obj, true))
 346                 GOTO(out_unlock, rc = -ENOTDIR);
 347
 348         rc = dt_lookup(env, obj, (struct dt_rec *)&tti->tti_fid1,
 349                        (struct dt_key *)name);
 350
 351         if (rc < 0)
 352                 GOTO(out_unlock, rc);
 353
 354         if (rc == 0)
 355                 rc += 1;
 356
 357 out_unlock:
 358         dt_read_unlock(env, obj);
 359
 360         CDEBUG(D_INFO, "lookup "DFID" %s get "DFID" rc %d\n",
 361                PFID(lu_object_fid(&obj->do_lu)), name,
 362                PFID(&tti->tti_fid1), rc);
 363
 364         CDEBUG(D_INFO, "%s: insert lookup reply %p index %d: rc = %d\n",
 365                tgt_name(tsi->tsi_tgt), tti->tti_u.update.tti_update_reply,
 366                0, rc);
 367
 368         object_update_result_insert(tti->tti_u.update.tti_update_reply,
 369                             &tti->tti_fid1, sizeof(tti->tti_fid1),
 370                             tti->tti_u.update.tti_update_reply_index, rc);
 371         RETURN(rc);
 372 }
 373
 374 static int out_xattr_set(struct tgt_session_info *tsi)
 375 {
 376         struct tgt_thread_info  *tti = tgt_th_info(tsi->tsi_env);
 377         struct object_update    *update = tti->tti_u.update.tti_update;
 378         struct dt_object        *obj = tti->tti_u.update.tti_dt_object;
 379         struct lu_buf           *lbuf = &tti->tti_buf;
 380         char                    *name;
 381         char                    *buf;
 382         __u32                   *tmp;
 383         size_t                   buf_len = 0;
 384         int                      flag;
 385         size_t                   size = 0;
 386         int                      rc;
 387         ENTRY;
 388
 389         name = object_update_param_get(update, 0, NULL);
 390         if (IS_ERR(name)) {
 391                 CERROR("%s: empty name for xattr set: rc = %ld\n",
 392                        tgt_name(tsi->tsi_tgt), PTR_ERR(name));
 393                 RETURN(PTR_ERR(name));
 394         }
 395
 396         /* If buffer == NULL (-ENODATA), then it might mean delete xattr */
 397         buf = object_update_param_get(update, 1, &buf_len);
 398         if (IS_ERR(buf) && PTR_ERR(buf) != -ENODATA)
 399                 RETURN(PTR_ERR(buf));
 400
 401         lbuf->lb_buf = buf;
 402         lbuf->lb_len = buf_len;
 403
 404         tmp = object_update_param_get(update, 2, &size);
 405         if (IS_ERR(tmp) || size != sizeof(*tmp)) {
 406                 CERROR("%s: emptry or wrong size %zu flag: rc = %ld\n",
 407                        tgt_name(tsi->tsi_tgt), size, PTR_ERR(tmp));
 408                 RETURN(PTR_ERR(tmp));
 409         }
 410
 411         if (req_capsule_req_need_swab(tsi->tsi_pill))
 412                 __swab32s(tmp);
 413         flag = *tmp;
 414
 415         rc = out_tx_xattr_set(tsi->tsi_env, obj, lbuf, name, flag,
 416                               &tti->tti_tea, tti->tti_tea.ta_handle,
 417                               tti->tti_u.update.tti_update_reply,
 418                               tti->tti_u.update.tti_update_reply_index);
 419         RETURN(rc);
 420 }
 421
 422 static int out_xattr_del(struct tgt_session_info *tsi)
 423 {
 424         struct tgt_thread_info  *tti = tgt_th_info(tsi->tsi_env);
 425         struct object_update    *update = tti->tti_u.update.tti_update;
 426         struct dt_object        *obj = tti->tti_u.update.tti_dt_object;
 427         char                    *name;
 428         int                      rc;
 429         ENTRY;
 430
 431         name = object_update_param_get(update, 0, NULL);
 432         if (IS_ERR(name)) {
 433                 CERROR("%s: empty name for xattr set: rc = %ld\n",
 434                        tgt_name(tsi->tsi_tgt), PTR_ERR(name));
 435                 RETURN(PTR_ERR(name));
 436         }
 437
 438         rc = out_tx_xattr_del(tsi->tsi_env, obj, name, &tti->tti_tea,
 439                               tti->tti_tea.ta_handle,
 440                               tti->tti_u.update.tti_update_reply,
 441                               tti->tti_u.update.tti_update_reply_index);
 442         RETURN(rc);
 443 }
 444
 445 /**
 446  * increase ref of the object
 447  **/
 448 static int out_ref_add(struct tgt_session_info *tsi)
 449 {
 450         struct tgt_thread_info  *tti = tgt_th_info(tsi->tsi_env);
 451         struct dt_object        *obj = tti->tti_u.update.tti_dt_object;
 452         int                      rc;
 453
 454         ENTRY;
 455
 456         rc = out_tx_ref_add(tsi->tsi_env, obj, &tti->tti_tea,
 457                             tti->tti_tea.ta_handle,
 458                             tti->tti_u.update.tti_update_reply,
 459                             tti->tti_u.update.tti_update_reply_index);
 460         RETURN(rc);
 461 }
 462
 463 static int out_ref_del(struct tgt_session_info *tsi)
 464 {
 465         struct tgt_thread_info  *tti = tgt_th_info(tsi->tsi_env);
 466         struct dt_object        *obj = tti->tti_u.update.tti_dt_object;
 467         int                      rc;
 468
 469         ENTRY;
 470
 471         if (!lu_object_exists(&obj->do_lu))
 472                 RETURN(-ENOENT);
 473
 474         rc = out_tx_ref_del(tsi->tsi_env, obj, &tti->tti_tea,
 475                             tti->tti_tea.ta_handle,
 476                             tti->tti_u.update.tti_update_reply,
 477                             tti->tti_u.update.tti_update_reply_index);
 478         RETURN(rc);
 479 }
 480
 481 static int out_index_insert(struct tgt_session_info *tsi)
 482 {
 483         struct tgt_thread_info  *tti    = tgt_th_info(tsi->tsi_env);
 484         struct object_update    *update = tti->tti_u.update.tti_update;
 485         struct dt_object        *obj    = tti->tti_u.update.tti_dt_object;
 486         struct dt_insert_rec    *rec    = &tti->tti_rec;
 487         struct lu_fid           *fid;
 488         char                    *name;
 489         __u32                   *ptype;
 490         int                      rc     = 0;
 491         size_t                   size;
 492         ENTRY;
 493
 494         name = object_update_param_get(update, 0, NULL);
 495         if (IS_ERR(name)) {
 496                 CERROR("%s: empty name for index insert: rc = %ld\n",
 497                        tgt_name(tsi->tsi_tgt), PTR_ERR(name));
 498                 RETURN(PTR_ERR(name));
 499         }
 500
 501         fid = object_update_param_get(update, 1, &size);
 502         if (IS_ERR(fid) || size != sizeof(*fid)) {
 503                 CERROR("%s: invalid fid: rc = %ld\n",
 504                        tgt_name(tsi->tsi_tgt), PTR_ERR(fid));
 505                 RETURN(PTR_ERR(fid));
 506         }
 507
 508         if (req_capsule_req_need_swab(tsi->tsi_pill))
 509                 lustre_swab_lu_fid(fid);
 510
 511         if (!fid_is_sane(fid)) {
 512                 CERROR("%s: invalid FID "DFID": rc = %d\n",
 513                        tgt_name(tsi->tsi_tgt), PFID(fid), -EPROTO);
 514                 RETURN(-EPROTO);
 515         }
 516
 517         ptype = object_update_param_get(update, 2, &size);
 518         if (IS_ERR(ptype) || size != sizeof(*ptype)) {
 519                 CERROR("%s: invalid type for index insert: rc = %ld\n",
 520                        tgt_name(tsi->tsi_tgt), PTR_ERR(ptype));
 521                 RETURN(PTR_ERR(ptype));
 522         }
 523
 524         if (req_capsule_req_need_swab(tsi->tsi_pill))
 525                 __swab32s(ptype);
 526
 527         rec->rec_fid = fid;
 528         rec->rec_type = *ptype;
 529
 530         rc = out_tx_index_insert(tsi->tsi_env, obj, (const struct dt_rec *)rec,
 531                                  (const struct dt_key *)name, &tti->tti_tea,
 532                                  tti->tti_tea.ta_handle,
 533                                  tti->tti_u.update.tti_update_reply,
 534                                  tti->tti_u.update.tti_update_reply_index);
 535
 536         CDEBUG(D_INFO, "%s: "DFID" index insert %s: rc = %d\n",
 537                tgt_name(tsi->tsi_tgt), PFID(lu_object_fid(&obj->do_lu)),
 538                name, rc);
 539
 540         RETURN(rc);
 541 }
 542
 543 static int out_index_delete(struct tgt_session_info *tsi)
 544 {
 545         struct tgt_thread_info  *tti = tgt_th_info(tsi->tsi_env);
 546         struct object_update    *update = tti->tti_u.update.tti_update;
 547         struct dt_object        *obj = tti->tti_u.update.tti_dt_object;
 548         char                    *name;
 549         int                      rc = 0;
 550
 551         if (!lu_object_exists(&obj->do_lu))
 552                 RETURN(-ENOENT);
 553
 554         name = object_update_param_get(update, 0, NULL);
 555         if (IS_ERR(name)) {
 556                 CERROR("%s: empty name for index delete: rc = %ld\n",
 557                        tgt_name(tsi->tsi_tgt), PTR_ERR(name));
 558                 RETURN(PTR_ERR(name));
 559         }
 560
 561         rc = out_tx_index_delete(tsi->tsi_env, obj, (const struct dt_key *)name,
 562                                  &tti->tti_tea, tti->tti_tea.ta_handle,
 563                                  tti->tti_u.update.tti_update_reply,
 564                                  tti->tti_u.update.tti_update_reply_index);
 565         RETURN(rc);
 566 }
 567
 568 static int out_destroy(struct tgt_session_info *tsi)
 569 {
 570         struct tgt_thread_info  *tti = tgt_th_info(tsi->tsi_env);
 571         struct object_update    *update = tti->tti_u.update.tti_update;
 572         struct dt_object        *obj = tti->tti_u.update.tti_dt_object;
 573         struct lu_fid           *fid;
 574         int                      rc;
 575         ENTRY;
 576
 577         fid = &update->ou_fid;
 578         if (!fid_is_sane(fid)) {
 579                 CERROR("%s: invalid FID "DFID": rc = %d\n",
 580                        tgt_name(tsi->tsi_tgt), PFID(fid), -EPROTO);
 581                 RETURN(-EPROTO);
 582         }
 583
 584         if (!lu_object_exists(&obj->do_lu))
 585                 RETURN(-ENOENT);
 586
 587         rc = out_tx_destroy(tsi->tsi_env, obj, &tti->tti_tea,
 588                             tti->tti_tea.ta_handle,
 589                             tti->tti_u.update.tti_update_reply,
 590                             tti->tti_u.update.tti_update_reply_index);
 591
 592         RETURN(rc);
 593 }
 594
 595 static int out_write(struct tgt_session_info *tsi)
 596 {
 597         struct tgt_thread_info  *tti = tgt_th_info(tsi->tsi_env);
 598         struct object_update    *update = tti->tti_u.update.tti_update;
 599         struct dt_object        *obj = tti->tti_u.update.tti_dt_object;
 600         struct lu_buf           *lbuf = &tti->tti_buf;
 601         char                    *buf;
 602         __u64                   *tmp;
 603         size_t                  size = 0;
 604         size_t                  buf_len = 0;
 605         loff_t                  pos;
 606         int                      rc;
 607         ENTRY;
 608
 609         buf = object_update_param_get(update, 0, &buf_len);
 610         if (IS_ERR(buf) || buf_len == 0) {
 611                 CERROR("%s: empty buf for xattr set: rc = %ld\n",
 612                        tgt_name(tsi->tsi_tgt), PTR_ERR(buf));
 613                 RETURN(PTR_ERR(buf));
 614         }
 615         lbuf->lb_buf = buf;
 616         lbuf->lb_len = buf_len;
 617
 618         tmp = object_update_param_get(update, 1, &size);
 619         if (IS_ERR(tmp) || size != sizeof(*tmp)) {
 620                 CERROR("%s: empty or wrong size %zu pos: rc = %ld\n",
 621                        tgt_name(tsi->tsi_tgt), size, PTR_ERR(tmp));
 622                 RETURN(PTR_ERR(tmp));
 623         }
 624
 625         if (req_capsule_req_need_swab(tsi->tsi_pill))
 626                 __swab64s(tmp);
 627         pos = *tmp;
 628
 629         rc = out_tx_write(tsi->tsi_env, obj, lbuf, pos,
 630                           &tti->tti_tea, tti->tti_tea.ta_handle,
 631                           tti->tti_u.update.tti_update_reply,
 632                           tti->tti_u.update.tti_update_reply_index);
 633         RETURN(rc);
 634 }
 635
 636 static int out_read(struct tgt_session_info *tsi)
 637 {
 638         const struct lu_env     *env = tsi->tsi_env;
 639         struct tgt_thread_info  *tti = tgt_th_info(env);
 640         struct object_update    *update = tti->tti_u.update.tti_update;
 641         struct dt_object        *obj = tti->tti_u.update.tti_dt_object;
 642         struct object_update_reply *reply = tti->tti_u.update.tti_update_reply;
 643         int index = tti->tti_u.update.tti_update_reply_index;
 644         struct lu_rdbuf *rdbuf;
 645         struct object_update_result *update_result;
 646         struct out_read_reply   *orr;
 647         void *tmp;
 648         size_t size;
 649         size_t total_size = 0;
 650         __u64 pos;
 651         unsigned int i;
 652         unsigned int nbufs;
 653         int rc = 0;
 654         ENTRY;
 655
 656         update_result = object_update_result_get(reply, index, NULL);
 657         LASSERT(update_result != NULL);
 658         update_result->our_datalen = sizeof(*orr);
 659
 660         if (!lu_object_exists(&obj->do_lu))
 661                 GOTO(out, rc = -ENOENT);
 662
 663         tmp = object_update_param_get(update, 0, NULL);
 664         if (IS_ERR(tmp)) {
 665                 CERROR("%s: empty size for read: rc = %ld\n",
 666                        tgt_name(tsi->tsi_tgt), PTR_ERR(tmp));
 667                 GOTO(out, rc = PTR_ERR(tmp));
 668         }
 669         size = le64_to_cpu(*(size_t *)(tmp));
 670
 671         tmp = object_update_param_get(update, 1, NULL);
 672         if (IS_ERR(tmp)) {
 673                 CERROR("%s: empty pos for read: rc = %ld\n",
 674                        tgt_name(tsi->tsi_tgt), PTR_ERR(tmp));
 675                 GOTO(out, rc = PTR_ERR(tmp));
 676         }
 677         pos = le64_to_cpu(*(__u64 *)(tmp));
 678
 679         /* Put the offset into the begining of the buffer in reply */
 680         orr = (struct out_read_reply *)update_result->our_data;
 681
 682         nbufs = (size + OUT_BULK_BUFFER_SIZE - 1) / OUT_BULK_BUFFER_SIZE;
 683         OBD_ALLOC(rdbuf, sizeof(*rdbuf) + nbufs * sizeof(rdbuf->rb_bufs[0]));
 684         if (rdbuf == NULL)
 685                 GOTO(out, rc = -ENOMEM);
 686
 687         rdbuf->rb_nbufs = 0;
 688         total_size = 0;
 689         for (i = 0; i < nbufs; i++) {
 690                 __u32 read_size;
 691
 692                 read_size = size > OUT_BULK_BUFFER_SIZE ?
 693                             OUT_BULK_BUFFER_SIZE : size;
 694                 OBD_ALLOC(rdbuf->rb_bufs[i].lb_buf, read_size);
 695                 if (rdbuf->rb_bufs[i].lb_buf == NULL)
 696                         GOTO(out_free, rc = -ENOMEM);
 697
 698                 rdbuf->rb_bufs[i].lb_len = read_size;
 699                 dt_read_lock(env, obj, DT_TGT_CHILD);
 700                 rc = dt_read(env, obj, &rdbuf->rb_bufs[i], &pos);
 701                 dt_read_unlock(env, obj);
 702
 703                 total_size += rc < 0 ? 0 : rc;
 704                 if (rc <= 0)
 705                         break;
 706
 707                 rdbuf->rb_nbufs++;
 708                 size -= read_size;
 709         }
 710
 711         /* send pages to client */
 712         rc = tgt_send_buffer(tsi, rdbuf);
 713         if (rc < 0)
 714                 GOTO(out_free, rc);
 715
 716         orr->orr_size = total_size;
 717         orr->orr_offset = pos;
 718
 719         orr_cpu_to_le(orr, orr);
 720         update_result->our_datalen += orr->orr_size;
 721 out_free:
 722         for (i = 0; i < nbufs; i++) {
 723                 if (rdbuf->rb_bufs[i].lb_buf != NULL) {
 724                         OBD_FREE(rdbuf->rb_bufs[i].lb_buf,
 725                                  rdbuf->rb_bufs[i].lb_len);
 726                 }
 727         }
 728         OBD_FREE(rdbuf, sizeof(*rdbuf) +
 729                         nbufs * sizeof(rdbuf->rb_bufs[0]));
 730 out:
 731         /* Insert read buffer */
 732         update_result->our_rc = ptlrpc_status_hton(rc);
 733         reply->ourp_lens[index] = cfs_size_round(update_result->our_datalen +
 734                                                  sizeof(*update_result));
 735         RETURN(rc);
 736 }
 737
 738 static int out_noop(struct tgt_session_info *tsi)
 739 {
 740         return 0;
 741 }
 742
 743 #define DEF_OUT_HNDL(opc, name, flags, fn)     \
 744 [opc - OUT_CREATE] = {                                  \
 745         .th_name    = name,                             \
 746         .th_fail_id = 0,                                \
 747         .th_opc     = opc,                              \
 748         .th_flags   = flags,                            \
 749         .th_act     = fn,                               \
 750         .th_fmt     = NULL,                             \
 751         .th_version = 0,                                \
 752 }
 753
 754 static struct tgt_handler out_update_ops[] = {
 755         DEF_OUT_HNDL(OUT_CREATE, "out_create", IS_MUTABLE | HAS_REPLY,
 756                      out_create),
 757         DEF_OUT_HNDL(OUT_DESTROY, "out_create", IS_MUTABLE | HAS_REPLY,
 758                      out_destroy),
 759         DEF_OUT_HNDL(OUT_REF_ADD, "out_ref_add", IS_MUTABLE | HAS_REPLY,
 760                      out_ref_add),
 761         DEF_OUT_HNDL(OUT_REF_DEL, "out_ref_del", IS_MUTABLE | HAS_REPLY,
 762                      out_ref_del),
 763         DEF_OUT_HNDL(OUT_ATTR_SET, "out_attr_set",  IS_MUTABLE | HAS_REPLY,
 764                      out_attr_set),
 765         DEF_OUT_HNDL(OUT_ATTR_GET, "out_attr_get",  HAS_REPLY,
 766                      out_attr_get),
 767         DEF_OUT_HNDL(OUT_XATTR_SET, "out_xattr_set", IS_MUTABLE | HAS_REPLY,
 768                      out_xattr_set),
 769         DEF_OUT_HNDL(OUT_XATTR_DEL, "out_xattr_del", IS_MUTABLE | HAS_REPLY,
 770                      out_xattr_del),
 771         DEF_OUT_HNDL(OUT_XATTR_GET, "out_xattr_get", HAS_REPLY,
 772                      out_xattr_get),
 773         DEF_OUT_HNDL(OUT_INDEX_LOOKUP, "out_index_lookup", HAS_REPLY,
 774                      out_index_lookup),
 775         DEF_OUT_HNDL(OUT_INDEX_INSERT, "out_index_insert",
 776                      IS_MUTABLE | HAS_REPLY, out_index_insert),
 777         DEF_OUT_HNDL(OUT_INDEX_DELETE, "out_index_delete",
 778                      IS_MUTABLE | HAS_REPLY, out_index_delete),
 779         DEF_OUT_HNDL(OUT_WRITE, "out_write", IS_MUTABLE | HAS_REPLY, out_write),
 780         DEF_OUT_HNDL(OUT_READ, "out_read", HAS_REPLY, out_read),
 781         DEF_OUT_HNDL(OUT_NOOP, "out_noop", HAS_REPLY, out_noop),
 782         DEF_OUT_HNDL(OUT_XATTR_LIST, "out_xattr_list", HAS_REPLY,
 783                      out_xattr_list),
 784 };
 785
 786 static struct tgt_handler *out_handler_find(__u32 opc)
 787 {
 788         struct tgt_handler *h;
 789
 790         h = NULL;
 791         if (OUT_CREATE <= opc && opc < OUT_LAST) {
 792                 h = &out_update_ops[opc - OUT_CREATE];
 793                 LASSERTF(h->th_opc == opc, "opcode mismatch %d != %d\n",
 794                          h->th_opc, opc);
 795         } else {
 796                 h = NULL; /* unsupported opc */
 797         }
 798         return h;
 799 }
 800
 801 static int out_tx_start(const struct lu_env *env, struct dt_device *dt,
 802                         struct thandle_exec_args *ta, struct obd_export *exp)
 803 {
 804         ta->ta_argno = 0;
 805         ta->ta_handle = dt_trans_create(env, dt);
 806         if (IS_ERR(ta->ta_handle)) {
 807                 int rc;
 808
 809                 rc = PTR_ERR(ta->ta_handle);
 810                 ta->ta_handle = NULL;
 811                 CERROR("%s: start handle error: rc = %d\n", dt_obd_name(dt),
 812                        rc);
 813                 return rc;
 814         }
 815         if (exp->exp_need_sync)
 816                 ta->ta_handle->th_sync = 1;
 817
 818         return 0;
 819 }
 820
 821 static int out_trans_start(const struct lu_env *env,
 822                            struct thandle_exec_args *ta)
 823 {
 824         return dt_trans_start(env, ta->ta_handle->th_dev, ta->ta_handle);
 825 }
 826
 827 static int out_trans_stop(const struct lu_env *env,
 828                           struct thandle_exec_args *ta, int err)
 829 {
 830         int i;
 831         int rc;
 832
 833         ta->ta_handle->th_result = err;
 834         rc = dt_trans_stop(env, ta->ta_handle->th_dev, ta->ta_handle);
 835         for (i = 0; i < ta->ta_argno; i++) {
 836                 if (ta->ta_args[i]->object != NULL) {
 837                         dt_object_put(env, ta->ta_args[i]->object);
 838                         ta->ta_args[i]->object = NULL;
 839                 }
 840         }
 841         ta->ta_handle = NULL;
 842         ta->ta_argno = 0;
 843
 844         return rc;
 845 }
 846
 847 static int out_tx_end(const struct lu_env *env, struct thandle_exec_args *ta,
 848                       int declare_ret)
 849 {
 850         struct tgt_session_info *tsi = tgt_ses_info(env);
 851         int                     i;
 852         int                     rc;
 853         int                     rc1;
 854         ENTRY;
 855
 856         if (ta->ta_handle == NULL)
 857                 RETURN(0);
 858
 859         if (declare_ret != 0 || ta->ta_argno == 0)
 860                 GOTO(stop, rc = declare_ret);
 861
 862         LASSERT(ta->ta_handle->th_dev != NULL);
 863         rc = out_trans_start(env, ta);
 864         if (unlikely(rc != 0))
 865                 GOTO(stop, rc);
 866
 867         for (i = 0; i < ta->ta_argno; i++) {
 868                 rc = ta->ta_args[i]->exec_fn(env, ta->ta_handle,
 869                                              ta->ta_args[i]);
 870                 if (unlikely(rc != 0)) {
 871                         CDEBUG(D_INFO, "error during execution of #%u from"
 872                                " %s:%d: rc = %d\n", i, ta->ta_args[i]->file,
 873                                ta->ta_args[i]->line, rc);
 874                         while (--i >= 0) {
 875                                 if (ta->ta_args[i]->undo_fn != NULL)
 876                                         ta->ta_args[i]->undo_fn(env,
 877                                                                ta->ta_handle,
 878                                                                ta->ta_args[i]);
 879                                 else
 880                                         CERROR("%s: undo for %s:%d: rc = %d\n",
 881                                              dt_obd_name(ta->ta_handle->th_dev),
 882                                                ta->ta_args[i]->file,
 883                                                ta->ta_args[i]->line, -ENOTSUPP);
 884                         }
 885                         break;
 886                 }
 887                 CDEBUG(D_INFO, "%s: executed %u/%u: rc = %d\n",
 888                        dt_obd_name(ta->ta_handle->th_dev), i, ta->ta_argno, rc);
 889         }
 890
 891         /* Only fail for real updates, XXX right now llog updates will be
 892         * ignore, whose updates count is usually 1, so failover test
 893         * case will spot this FAIL_UPDATE_NET_REP precisely, and it will
 894         * be removed after async update patch is landed. */
 895         if (ta->ta_argno > 1)
 896                 tsi->tsi_reply_fail_id = OBD_FAIL_OUT_UPDATE_NET_REP;
 897
 898 stop:
 899         rc1 = out_trans_stop(env, ta, rc);
 900         if (rc == 0)
 901                 rc = rc1;
 902
 903         ta->ta_handle = NULL;
 904         ta->ta_argno = 0;
 905
 906         RETURN(rc);
 907 }
 908
 909 /**
 910  * Object updates between Targets. Because all the updates has been
 911  * dis-assemblied into object updates at sender side, so OUT will
 912  * call OSD API directly to execute these updates.
 913  *
 914  * In DNE phase I all of the updates in the request need to be executed
 915  * in one transaction, and the transaction has to be synchronously.
 916  *
 917  * Please refer to lustre/include/lustre/lustre_idl.h for req/reply
 918  * format.
 919  */
 920 int out_handle(struct tgt_session_info *tsi)
 921 {
 922         const struct lu_env             *env = tsi->tsi_env;
 923         struct tgt_thread_info          *tti = tgt_th_info(env);
 924         struct thandle_exec_args        *ta = &tti->tti_tea;
 925         struct req_capsule              *pill = tsi->tsi_pill;
 926         struct dt_device                *dt = tsi->tsi_tgt->lut_bottom;
 927         struct out_update_header        *ouh;
 928         struct out_update_buffer        *oub = NULL;
 929         struct object_update            *update;
 930         struct object_update_reply      *reply;
 931         struct ptlrpc_bulk_desc         *desc = NULL;
 932         struct tg_reply_data *trd = NULL;
 933         void                            **update_bufs;
 934         int                             current_batchid = -1;
 935         __u32                           update_buf_count;
 936         unsigned int                    i;
 937         unsigned int                    reply_index = 0;
 938         int                             rc = 0;
 939         int                             rc1 = 0;
 940         int                             ouh_size, reply_size;
 941         int                             updates;
 942         bool need_reconstruct;
 943
 944         ENTRY;
 945
 946         req_capsule_set(pill, &RQF_OUT_UPDATE);
 947         ouh_size = req_capsule_get_size(pill, &RMF_OUT_UPDATE_HEADER,
 948                                         RCL_CLIENT);
 949         if (ouh_size <= 0)
 950                 RETURN(err_serious(-EPROTO));
 951
 952         ouh = req_capsule_client_get(pill, &RMF_OUT_UPDATE_HEADER);
 953         if (ouh == NULL)
 954                 RETURN(err_serious(-EPROTO));
 955
 956         if (ouh->ouh_magic != OUT_UPDATE_HEADER_MAGIC) {
 957                 CERROR("%s: invalid update buffer magic %x expect %x: "
 958                        "rc = %d\n", tgt_name(tsi->tsi_tgt), ouh->ouh_magic,
 959                        UPDATE_REQUEST_MAGIC, -EPROTO);
 960                 RETURN(err_serious(-EPROTO));
 961         }
 962
 963         update_buf_count = ouh->ouh_count;
 964         if (update_buf_count == 0)
 965                 RETURN(err_serious(-EPROTO));
 966
 967         OBD_ALLOC_PTR_ARRAY(update_bufs, update_buf_count);
 968         if (update_bufs == NULL)
 969                 RETURN(err_serious(-ENOMEM));
 970
 971         if (ouh->ouh_inline_length > 0) {
 972                 update_bufs[0] = ouh->ouh_inline_data;
 973         } else {
 974                 struct out_update_buffer *tmp;
 975                 int page_count = 0;
 976
 977                 oub = req_capsule_client_get(pill, &RMF_OUT_UPDATE_BUF);
 978                 if (oub == NULL)
 979                         GOTO(out_free, rc = err_serious(-EPROTO));
 980
 981                 for (i = 0; i < update_buf_count; i++)
 982                         /* First *and* last might be partial pages, hence +1 */
 983                         page_count += DIV_ROUND_UP(oub[i].oub_size,
 984                                                    PAGE_SIZE) + 1;
 985
 986                 desc = ptlrpc_prep_bulk_exp(pill->rc_req, page_count,
 987                                             PTLRPC_BULK_OPS_COUNT,
 988                                             PTLRPC_BULK_GET_SINK,
 989                                             MDS_BULK_PORTAL,
 990                                             &ptlrpc_bulk_kiov_nopin_ops);
 991                 if (desc == NULL)
 992                         GOTO(out_free, rc = err_serious(-ENOMEM));
 993
 994                 tmp = oub;
 995                 for (i = 0; i < update_buf_count; i++, tmp++) {
 996                         if (tmp->oub_size >= OUT_MAXREQSIZE)
 997                                 GOTO(out_free, rc = err_serious(-EPROTO));
 998
 999                         OBD_ALLOC_LARGE(update_bufs[i], tmp->oub_size);
1000                         if (update_bufs[i] == NULL)
1001                                 GOTO(out_free, rc = err_serious(-ENOMEM));
1002
1003                         desc->bd_frag_ops->add_iov_frag(desc, update_bufs[i],
1004                                                         tmp->oub_size);
1005                 }
1006
1007                 pill->rc_req->rq_bulk_write = 1;
1008                 rc = sptlrpc_svc_prep_bulk(pill->rc_req, desc);
1009                 if (rc != 0)
1010                         GOTO(out_free, rc = err_serious(rc));
1011
1012                 rc = target_bulk_io(pill->rc_req->rq_export, desc);
1013                 if (rc < 0)
1014                         GOTO(out_free, rc = err_serious(rc));
1015         }
1016         /* validate the request and calculate the total update count and
1017          * set it to reply */
1018         reply_size = 0;
1019         updates = 0;
1020         for (i = 0; i < update_buf_count; i++) {
1021                 struct object_update_request    *our;
1022                 int                              j;
1023
1024                 our = update_bufs[i];
1025                 if (req_capsule_req_need_swab(pill))
1026                         lustre_swab_object_update_request(our, 0);
1027
1028                 if (our->ourq_magic != UPDATE_REQUEST_MAGIC) {
1029                         CERROR("%s: invalid update buffer magic %x"
1030                                " expect %x: rc = %d\n",
1031                                tgt_name(tsi->tsi_tgt), our->ourq_magic,
1032                                UPDATE_REQUEST_MAGIC, -EPROTO);
1033                         GOTO(out_free, rc = err_serious(-EPROTO));
1034                 }
1035                 updates += our->ourq_count;
1036
1037                 /* need to calculate reply size */
1038                 for (j = 0; j < our->ourq_count; j++) {
1039                         update = object_update_request_get(our, j, NULL);
1040                         if (update == NULL)
1041                                 GOTO(out, rc = err_serious(-EPROTO));
1042                         if (req_capsule_req_need_swab(pill))
1043                                 lustre_swab_object_update(update);
1044
1045                         if (!fid_is_sane(&update->ou_fid)) {
1046                                 CERROR("%s: invalid FID "DFID": rc = %d\n",
1047                                        tgt_name(tsi->tsi_tgt),
1048                                        PFID(&update->ou_fid), -EPROTO);
1049                                 GOTO(out, rc = err_serious(-EPROTO));
1050                         }
1051
1052                         /* XXX: what ou_result_size can be considered safe? */
1053
1054                         reply_size += sizeof(reply->ourp_lens[0]);
1055                         reply_size += sizeof(struct object_update_result);
1056                         reply_size += update->ou_result_size;
1057                 }
1058         }
1059         reply_size += sizeof(*reply);
1060
1061         if (unlikely(reply_size > ouh->ouh_reply_size)) {
1062                 CERROR("%s: too small reply buf %u for %u, need %u at least\n",
1063                        tgt_name(tsi->tsi_tgt), ouh->ouh_reply_size,
1064                        updates, reply_size);
1065                 GOTO(out_free, rc = err_serious(-EPROTO));
1066         }
1067
1068         req_capsule_set_size(pill, &RMF_OUT_UPDATE_REPLY, RCL_SERVER,
1069                              ouh->ouh_reply_size);
1070         rc = req_capsule_server_pack(pill);
1071         if (rc != 0) {
1072                 CERROR("%s: Can't pack response: rc = %d\n",
1073                        tgt_name(tsi->tsi_tgt), rc);
1074                 GOTO(out_free, rc = err_serious(-EPROTO));
1075         }
1076
1077         /* Prepare the update reply buffer */
1078         reply = req_capsule_server_get(pill, &RMF_OUT_UPDATE_REPLY);
1079         if (reply == NULL)
1080                 GOTO(out_free, rc = -EPROTO);
1081         reply->ourp_magic = UPDATE_REPLY_MAGIC;
1082         reply->ourp_count = updates;
1083         tti->tti_u.update.tti_update_reply = reply;
1084         tsi->tsi_mult_trans = !req_is_replay(tgt_ses_req(tsi));
1085
1086         OBD_ALLOC_PTR(trd);
1087         if (!trd)
1088                 GOTO(out_free, rc = -ENOMEM);
1089
1090         need_reconstruct = tgt_check_resent(pill->rc_req, trd);
1091
1092         /* Walk through updates in the request to execute them */
1093         for (i = 0; i < update_buf_count; i++) {
1094                 struct tgt_handler      *h;
1095                 struct dt_object        *dt_obj;
1096                 int                     update_count;
1097                 struct object_update_request *our;
1098                 int                     j;
1099
1100                 our = update_bufs[i];
1101                 update_count = our->ourq_count;
1102                 for (j = 0; j < update_count; j++) {
1103                         struct lu_object_conf conf;
1104
1105                         update = object_update_request_get(our, j, NULL);
1106                         if (update->ou_type == OUT_CREATE)
1107                                 conf.loc_flags = LOC_F_NEW;
1108                         else
1109                                 conf.loc_flags = 0;
1110
1111                         dt_obj = dt_locate_at(env, dt, &update->ou_fid,
1112                                 dt->dd_lu_dev.ld_site->ls_top_dev, &conf);
1113                         if (IS_ERR(dt_obj))
1114                                 GOTO(out, rc = PTR_ERR(dt_obj));
1115
1116                         if (dt->dd_record_fid_accessed) {
1117                                 struct lfsck_req_local *lrl = &tti->tti_lrl;
1118
1119                                 lfsck_pack_rfa(lrl,
1120                                                lu_object_fid(&dt_obj->do_lu),
1121                                                LEL_FID_ACCESSED,
1122                                                LFSCK_TYPE_LAYOUT);
1123                                 tgt_lfsck_in_notify_local(env, dt, lrl, NULL);
1124                         }
1125
1126                         tti->tti_u.update.tti_dt_object = dt_obj;
1127                         tti->tti_u.update.tti_update = update;
1128                         tti->tti_u.update.tti_update_reply_index = reply_index;
1129
1130                         h = out_handler_find(update->ou_type);
1131                         if (unlikely(h == NULL)) {
1132                                 CERROR("%s: unsupported opc: 0x%x\n",
1133                                        tgt_name(tsi->tsi_tgt), update->ou_type);
1134                                 GOTO(next, rc = -ENOTSUPP);
1135                         }
1136
1137                         /* Check resend case only for modifying RPC */
1138                         if (h->th_flags & IS_MUTABLE) {
1139                                 /* sanity check for last XID changing */
1140                                 if (unlikely(!need_reconstruct &&
1141                                              req_xid_is_last(pill->rc_req))) {
1142                                         DEBUG_REQ(D_ERROR, pill->rc_req,
1143                                                   "unexpected last XID change");
1144                                         GOTO(next, rc = -EINVAL);
1145                                 }
1146
1147                                 if (need_reconstruct) {
1148                                         out_reconstruct(env, dt, dt_obj, reply,
1149                                                         reply_index);
1150                                         GOTO(next, rc = 0);
1151                                 }
1152
1153                                 if (dt->dd_rdonly)
1154                                         GOTO(next, rc = -EROFS);
1155                         }
1156
1157                         /* start transaction for modification RPC only */
1158                         if (h->th_flags & IS_MUTABLE && current_batchid == -1) {
1159                                 current_batchid = update->ou_batchid;
1160
1161                                 if (reply_index == 0)
1162                                         CFS_RACE(OBD_FAIL_PTLRPC_RESEND_RACE);
1163
1164                                 rc = out_tx_start(env, dt, ta, tsi->tsi_exp);
1165                                 if (rc != 0)
1166                                         GOTO(next, rc);
1167
1168                                 if (update->ou_flags & UPDATE_FL_SYNC)
1169                                         ta->ta_handle->th_sync = 1;
1170                         }
1171
1172                         /* Stop the current update transaction, if the update
1173                          * has different batchid, or read-only update */
1174                         if (((current_batchid != update->ou_batchid) ||
1175                              !(h->th_flags & IS_MUTABLE)) &&
1176                              ta->ta_handle != NULL) {
1177                                 rc = out_tx_end(env, ta, rc);
1178                                 current_batchid = -1;
1179                                 if (rc != 0)
1180                                         GOTO(next, rc);
1181
1182                                 /* start a new transaction if needed */
1183                                 if (h->th_flags & IS_MUTABLE) {
1184                                         rc = out_tx_start(env, dt, ta,
1185                                                           tsi->tsi_exp);
1186                                         if (rc != 0)
1187                                                 GOTO(next, rc);
1188                                         if (update->ou_flags & UPDATE_FL_SYNC)
1189                                                 ta->ta_handle->th_sync = 1;
1190                                         current_batchid = update->ou_batchid;
1191                                 }
1192                         }
1193
1194                         if (OBD_FAIL_CHECK(OBD_FAIL_OUT_EIO))
1195                                 rc = -EIO;
1196                         else
1197                                 rc = h->th_act(tsi);
1198 next:
1199                         reply_index++;
1200                         dt_object_put(env, dt_obj);
1201                         if (rc < 0)
1202                                 GOTO(out, rc);
1203                 }
1204         }
1205 out:
1206         if (current_batchid != -1) {
1207                 rc1 = out_tx_end(env, ta, rc);
1208                 if (rc == 0)
1209                         rc = rc1;
1210         }
1211
1212 out_free:
1213         if (update_bufs != NULL) {
1214                 if (oub != NULL) {
1215                         for (i = 0; i < update_buf_count; i++, oub++) {
1216                                 if (update_bufs[i] != NULL)
1217                                         OBD_FREE_LARGE(update_bufs[i],
1218                                                        oub->oub_size);
1219                         }
1220                 }
1221
1222                 OBD_FREE_PTR_ARRAY(update_bufs, update_buf_count);
1223         }
1224
1225         if (trd)
1226                 OBD_FREE_PTR(trd);
1227
1228         if (desc != NULL)
1229                 ptlrpc_free_bulk(desc);
1230
1231         RETURN(rc);
1232 }
1233
1234 struct tgt_handler tgt_out_handlers[] = {
1235 TGT_UPDATE_HDL(IS_MUTABLE,      OUT_UPDATE,     out_handle),
1236 };
1237 EXPORT_SYMBOL(tgt_out_handlers);
1238