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, 2016, 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_INFO, "%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         return;
  60 }
  61
  62 typedef void (*out_reconstruct_t)(const struct lu_env *env,
  63                                   struct dt_device *dt,
  64                                   struct dt_object *obj,
  65                                   struct object_update_reply *reply,
  66                                   int index);
  67
  68 static inline int out_check_resent(const struct lu_env *env,
  69                                    struct dt_device *dt,
  70                                    struct dt_object *obj,
  71                                    struct ptlrpc_request *req,
  72                                    out_reconstruct_t reconstruct,
  73                                    struct object_update_reply *reply,
  74                                    int index)
  75 {
  76         if (likely(!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT)))
  77                 return 0;
  78
  79         if (req_xid_is_last(req)) {
  80                 struct lsd_client_data *lcd;
  81
  82                 /* XXX this does not support mulitple transactions yet, i.e.
  83                  * only 1 update RPC each time betwee MDTs */
  84                 lcd = req->rq_export->exp_target_data.ted_lcd;
  85
  86                 req->rq_transno = lcd->lcd_last_transno;
  87                 req->rq_status = lcd->lcd_last_result;
  88                 if (req->rq_status != 0)
  89                         req->rq_transno = 0;
  90                 lustre_msg_set_transno(req->rq_repmsg, req->rq_transno);
  91                 lustre_msg_set_status(req->rq_repmsg, req->rq_status);
  92
  93                 DEBUG_REQ(D_RPCTRACE, req, "restoring resent RPC");
  94
  95                 reconstruct(env, dt, obj, reply, index);
  96                 return 1;
  97         }
  98         DEBUG_REQ(D_HA, req, "no reply for RESENT req (have %lld)",
  99                  req->rq_export->exp_target_data.ted_lcd->lcd_last_xid);
 100         return 0;
 101 }
 102
 103 static int out_create(struct tgt_session_info *tsi)
 104 {
 105         struct tgt_thread_info  *tti = tgt_th_info(tsi->tsi_env);
 106         struct object_update    *update = tti->tti_u.update.tti_update;
 107         struct dt_object        *obj = tti->tti_u.update.tti_dt_object;
 108         struct dt_object_format *dof = &tti->tti_u.update.tti_update_dof;
 109         struct obdo             *lobdo = &tti->tti_u.update.tti_obdo;
 110         struct lu_attr          *attr = &tti->tti_attr;
 111         struct lu_fid           *fid = NULL;
 112         struct obdo             *wobdo;
 113         size_t                  size;
 114         int                     rc;
 115
 116         ENTRY;
 117
 118         wobdo = object_update_param_get(update, 0, &size);
 119         if (IS_ERR(wobdo) || size != sizeof(*wobdo)) {
 120                 CERROR("%s: obdo is NULL, invalid RPC: rc = %ld\n",
 121                        tgt_name(tsi->tsi_tgt), PTR_ERR(wobdo));
 122                 RETURN(PTR_ERR(wobdo));
 123         }
 124
 125         if (ptlrpc_req_need_swab(tsi->tsi_pill->rc_req))
 126                 lustre_swab_obdo(wobdo);
 127         lustre_get_wire_obdo(NULL, lobdo, wobdo);
 128         la_from_obdo(attr, lobdo, lobdo->o_valid);
 129
 130         dof->dof_type = dt_mode_to_dft(attr->la_mode);
 131         if (update->ou_params_count > 1) {
 132                 fid = object_update_param_get(update, 1, &size);
 133                 if (IS_ERR(fid) || size != sizeof(*fid)) {
 134                         CERROR("%s: invalid fid: rc = %ld\n",
 135                                tgt_name(tsi->tsi_tgt), PTR_ERR(fid));
 136                         RETURN(PTR_ERR(fid));
 137                 }
 138                 if (ptlrpc_req_need_swab(tsi->tsi_pill->rc_req))
 139                         lustre_swab_lu_fid(fid);
 140                 if (!fid_is_sane(fid)) {
 141                         CERROR("%s: invalid fid "DFID": rc = %d\n",
 142                                tgt_name(tsi->tsi_tgt), PFID(fid), -EPROTO);
 143                         RETURN(-EPROTO);
 144                 }
 145         }
 146
 147         if (lu_object_exists(&obj->do_lu))
 148                 RETURN(-EEXIST);
 149
 150         rc = out_tx_create(tsi->tsi_env, obj, attr, fid, dof,
 151                            &tti->tti_tea, 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_set(struct tgt_session_info *tsi)
 159 {
 160         struct tgt_thread_info  *tti = tgt_th_info(tsi->tsi_env);
 161         struct object_update    *update = tti->tti_u.update.tti_update;
 162         struct lu_attr          *attr = &tti->tti_attr;
 163         struct dt_object        *obj = tti->tti_u.update.tti_dt_object;
 164         struct obdo             *lobdo = &tti->tti_u.update.tti_obdo;
 165         struct obdo             *wobdo;
 166         size_t                   size;
 167         int                      rc;
 168
 169         ENTRY;
 170
 171         wobdo = object_update_param_get(update, 0, &size);
 172         if (IS_ERR(wobdo) || size != sizeof(*wobdo)) {
 173                 CERROR("%s: empty obdo in the update: rc = %ld\n",
 174                        tgt_name(tsi->tsi_tgt), PTR_ERR(wobdo));
 175                 RETURN(PTR_ERR(wobdo));
 176         }
 177
 178         attr->la_valid = 0;
 179         attr->la_valid = 0;
 180
 181         if (ptlrpc_req_need_swab(tsi->tsi_pill->rc_req))
 182                 lustre_swab_obdo(wobdo);
 183         lustre_get_wire_obdo(NULL, lobdo, wobdo);
 184         la_from_obdo(attr, lobdo, lobdo->o_valid);
 185
 186         rc = out_tx_attr_set(tsi->tsi_env, obj, attr, &tti->tti_tea,
 187                              tti->tti_tea.ta_handle,
 188                              tti->tti_u.update.tti_update_reply,
 189                              tti->tti_u.update.tti_update_reply_index);
 190
 191         RETURN(rc);
 192 }
 193
 194 static int out_attr_get(struct tgt_session_info *tsi)
 195 {
 196         const struct lu_env     *env = tsi->tsi_env;
 197         struct tgt_thread_info  *tti = tgt_th_info(env);
 198         struct object_update    *update = tti->tti_u.update.tti_update;
 199         struct obdo             *obdo = &tti->tti_u.update.tti_obdo;
 200         struct lu_attr          *la = &tti->tti_attr;
 201         struct dt_object        *obj = tti->tti_u.update.tti_dt_object;
 202         int                     idx = tti->tti_u.update.tti_update_reply_index;
 203         int                     rc;
 204
 205         ENTRY;
 206
 207         if (unlikely(update->ou_result_size < sizeof(*obdo)))
 208                 return -EPROTO;
 209
 210         if (!lu_object_exists(&obj->do_lu)) {
 211                 /* Usually, this will be called when the master MDT try
 212                  * to init a remote object(see osp_object_init), so if
 213                  * the object does not exist on slave, we need set BANSHEE flag,
 214                  * so the object can be removed from the cache immediately */
 215                 set_bit(LU_OBJECT_HEARD_BANSHEE,
 216                         &obj->do_lu.lo_header->loh_flags);
 217                 RETURN(-ENOENT);
 218         }
 219
 220         dt_read_lock(env, obj, MOR_TGT_CHILD);
 221         rc = dt_attr_get(env, obj, la);
 222         if (rc)
 223                 GOTO(out_unlock, rc);
 224
 225         obdo->o_valid = 0;
 226         obdo_from_la(obdo, la, la->la_valid);
 227         lustre_set_wire_obdo(NULL, obdo, obdo);
 228
 229 out_unlock:
 230         dt_read_unlock(env, obj);
 231
 232         CDEBUG(D_INFO, "%s: insert attr get reply %p index %d: rc = %d\n",
 233                tgt_name(tsi->tsi_tgt), tti->tti_u.update.tti_update_reply,
 234                0, rc);
 235
 236         object_update_result_insert(tti->tti_u.update.tti_update_reply, obdo,
 237                                     sizeof(*obdo), idx, rc);
 238
 239         RETURN(rc);
 240 }
 241
 242 static int out_xattr_get(struct tgt_session_info *tsi)
 243 {
 244         const struct lu_env        *env = tsi->tsi_env;
 245         struct tgt_thread_info     *tti = tgt_th_info(env);
 246         struct object_update       *update = tti->tti_u.update.tti_update;
 247         struct lu_buf              *lbuf = &tti->tti_buf;
 248         struct object_update_reply *reply = tti->tti_u.update.tti_update_reply;
 249         struct dt_object           *obj = tti->tti_u.update.tti_dt_object;
 250         char                       *name;
 251         struct object_update_result *update_result;
 252         int                     idx = tti->tti_u.update.tti_update_reply_index;
 253         int                        rc;
 254
 255         ENTRY;
 256
 257         if (!lu_object_exists(&obj->do_lu)) {
 258                 set_bit(LU_OBJECT_HEARD_BANSHEE,
 259                         &obj->do_lu.lo_header->loh_flags);
 260                 RETURN(-ENOENT);
 261         }
 262
 263         name = object_update_param_get(update, 0, NULL);
 264         if (IS_ERR(name)) {
 265                 CERROR("%s: empty name for xattr get: rc = %ld\n",
 266                        tgt_name(tsi->tsi_tgt), PTR_ERR(name));
 267                 RETURN(PTR_ERR(name));
 268         }
 269
 270         update_result = object_update_result_get(reply, 0, NULL);
 271         if (update_result == NULL) {
 272                 CERROR("%s: empty name for xattr get: rc = %d\n",
 273                        tgt_name(tsi->tsi_tgt), -EPROTO);
 274                 RETURN(-EPROTO);
 275         }
 276
 277         lbuf->lb_len = (int)tti->tti_u.update.tti_update->ou_result_size;
 278         lbuf->lb_buf = update_result->our_data;
 279         if (lbuf->lb_len == 0)
 280                 lbuf->lb_buf = 0;
 281         dt_read_lock(env, obj, MOR_TGT_CHILD);
 282         rc = dt_xattr_get(env, obj, lbuf, name);
 283         dt_read_unlock(env, obj);
 284         if (rc < 0)
 285                 lbuf->lb_len = 0;
 286         CDEBUG(D_INFO, "%s: "DFID" get xattr %s len %d\n",
 287                tgt_name(tsi->tsi_tgt), PFID(lu_object_fid(&obj->do_lu)),
 288                name, (int)lbuf->lb_len);
 289
 290         GOTO(out, rc);
 291
 292 out:
 293         object_update_result_insert(reply, lbuf->lb_buf, lbuf->lb_len, idx, rc);
 294         RETURN(0);
 295 }
 296
 297 static int out_index_lookup(struct tgt_session_info *tsi)
 298 {
 299         const struct lu_env     *env = tsi->tsi_env;
 300         struct tgt_thread_info  *tti = tgt_th_info(env);
 301         struct object_update    *update = tti->tti_u.update.tti_update;
 302         struct dt_object        *obj = tti->tti_u.update.tti_dt_object;
 303         char                    *name;
 304         int                      rc;
 305
 306         ENTRY;
 307
 308         if (unlikely(update->ou_result_size < sizeof(tti->tti_fid1)))
 309                 return -EPROTO;
 310
 311         if (!lu_object_exists(&obj->do_lu))
 312                 RETURN(-ENOENT);
 313
 314         name = object_update_param_get(update, 0, NULL);
 315         if (IS_ERR(name)) {
 316                 CERROR("%s: empty name for lookup: rc = %ld\n",
 317                        tgt_name(tsi->tsi_tgt), PTR_ERR(name));
 318                 RETURN(PTR_ERR(name));
 319         }
 320
 321         dt_read_lock(env, obj, MOR_TGT_CHILD);
 322         if (!dt_try_as_dir(env, obj))
 323                 GOTO(out_unlock, rc = -ENOTDIR);
 324
 325         rc = dt_lookup(env, obj, (struct dt_rec *)&tti->tti_fid1,
 326                        (struct dt_key *)name);
 327
 328         if (rc < 0)
 329                 GOTO(out_unlock, rc);
 330
 331         if (rc == 0)
 332                 rc += 1;
 333
 334 out_unlock:
 335         dt_read_unlock(env, obj);
 336
 337         CDEBUG(D_INFO, "lookup "DFID" %s get "DFID" rc %d\n",
 338                PFID(lu_object_fid(&obj->do_lu)), name,
 339                PFID(&tti->tti_fid1), rc);
 340
 341         CDEBUG(D_INFO, "%s: insert lookup reply %p index %d: rc = %d\n",
 342                tgt_name(tsi->tsi_tgt), tti->tti_u.update.tti_update_reply,
 343                0, rc);
 344
 345         object_update_result_insert(tti->tti_u.update.tti_update_reply,
 346                             &tti->tti_fid1, sizeof(tti->tti_fid1),
 347                             tti->tti_u.update.tti_update_reply_index, rc);
 348         RETURN(rc);
 349 }
 350
 351 static int out_xattr_set(struct tgt_session_info *tsi)
 352 {
 353         struct tgt_thread_info  *tti = tgt_th_info(tsi->tsi_env);
 354         struct object_update    *update = tti->tti_u.update.tti_update;
 355         struct dt_object        *obj = tti->tti_u.update.tti_dt_object;
 356         struct lu_buf           *lbuf = &tti->tti_buf;
 357         char                    *name;
 358         char                    *buf;
 359         __u32                   *tmp;
 360         size_t                   buf_len = 0;
 361         int                      flag;
 362         size_t                   size = 0;
 363         int                      rc;
 364         ENTRY;
 365
 366         name = object_update_param_get(update, 0, NULL);
 367         if (IS_ERR(name)) {
 368                 CERROR("%s: empty name for xattr set: rc = %ld\n",
 369                        tgt_name(tsi->tsi_tgt), PTR_ERR(name));
 370                 RETURN(PTR_ERR(name));
 371         }
 372
 373         /* If buffer == NULL (-ENODATA), then it might mean delete xattr */
 374         buf = object_update_param_get(update, 1, &buf_len);
 375         if (IS_ERR(buf) && PTR_ERR(buf) != -ENODATA)
 376                 RETURN(PTR_ERR(buf));
 377
 378         lbuf->lb_buf = buf;
 379         lbuf->lb_len = buf_len;
 380
 381         tmp = object_update_param_get(update, 2, &size);
 382         if (IS_ERR(tmp) || size != sizeof(*tmp)) {
 383                 CERROR("%s: emptry or wrong size %zu flag: rc = %ld\n",
 384                        tgt_name(tsi->tsi_tgt), size, PTR_ERR(tmp));
 385                 RETURN(PTR_ERR(tmp));
 386         }
 387
 388         if (ptlrpc_req_need_swab(tsi->tsi_pill->rc_req))
 389                 __swab32s(tmp);
 390         flag = *tmp;
 391
 392         rc = out_tx_xattr_set(tsi->tsi_env, obj, lbuf, name, flag,
 393                               &tti->tti_tea, tti->tti_tea.ta_handle,
 394                               tti->tti_u.update.tti_update_reply,
 395                               tti->tti_u.update.tti_update_reply_index);
 396         RETURN(rc);
 397 }
 398
 399 static int out_xattr_del(struct tgt_session_info *tsi)
 400 {
 401         struct tgt_thread_info  *tti = tgt_th_info(tsi->tsi_env);
 402         struct object_update    *update = tti->tti_u.update.tti_update;
 403         struct dt_object        *obj = tti->tti_u.update.tti_dt_object;
 404         char                    *name;
 405         int                      rc;
 406         ENTRY;
 407
 408         name = object_update_param_get(update, 0, NULL);
 409         if (IS_ERR(name)) {
 410                 CERROR("%s: empty name for xattr set: rc = %ld\n",
 411                        tgt_name(tsi->tsi_tgt), PTR_ERR(name));
 412                 RETURN(PTR_ERR(name));
 413         }
 414
 415         rc = out_tx_xattr_del(tsi->tsi_env, obj, name, &tti->tti_tea,
 416                               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 /**
 423  * increase ref of the object
 424  **/
 425 static int out_ref_add(struct tgt_session_info *tsi)
 426 {
 427         struct tgt_thread_info  *tti = tgt_th_info(tsi->tsi_env);
 428         struct dt_object        *obj = tti->tti_u.update.tti_dt_object;
 429         int                      rc;
 430
 431         ENTRY;
 432
 433         rc = out_tx_ref_add(tsi->tsi_env, obj, &tti->tti_tea,
 434                             tti->tti_tea.ta_handle,
 435                             tti->tti_u.update.tti_update_reply,
 436                             tti->tti_u.update.tti_update_reply_index);
 437         RETURN(rc);
 438 }
 439
 440 static int out_ref_del(struct tgt_session_info *tsi)
 441 {
 442         struct tgt_thread_info  *tti = tgt_th_info(tsi->tsi_env);
 443         struct dt_object        *obj = tti->tti_u.update.tti_dt_object;
 444         int                      rc;
 445
 446         ENTRY;
 447
 448         if (!lu_object_exists(&obj->do_lu))
 449                 RETURN(-ENOENT);
 450
 451         rc = out_tx_ref_del(tsi->tsi_env, obj, &tti->tti_tea,
 452                             tti->tti_tea.ta_handle,
 453                             tti->tti_u.update.tti_update_reply,
 454                             tti->tti_u.update.tti_update_reply_index);
 455         RETURN(rc);
 456 }
 457
 458 static int out_index_insert(struct tgt_session_info *tsi)
 459 {
 460         struct tgt_thread_info  *tti    = tgt_th_info(tsi->tsi_env);
 461         struct object_update    *update = tti->tti_u.update.tti_update;
 462         struct dt_object        *obj    = tti->tti_u.update.tti_dt_object;
 463         struct dt_insert_rec    *rec    = &tti->tti_rec;
 464         struct lu_fid           *fid;
 465         char                    *name;
 466         __u32                   *ptype;
 467         int                      rc     = 0;
 468         size_t                   size;
 469         ENTRY;
 470
 471         name = object_update_param_get(update, 0, NULL);
 472         if (IS_ERR(name)) {
 473                 CERROR("%s: empty name for index insert: rc = %ld\n",
 474                        tgt_name(tsi->tsi_tgt), PTR_ERR(name));
 475                 RETURN(PTR_ERR(name));
 476         }
 477
 478         fid = object_update_param_get(update, 1, &size);
 479         if (IS_ERR(fid) || size != sizeof(*fid)) {
 480                 CERROR("%s: invalid fid: rc = %ld\n",
 481                        tgt_name(tsi->tsi_tgt), PTR_ERR(fid));
 482                 RETURN(PTR_ERR(fid));
 483         }
 484
 485         if (ptlrpc_req_need_swab(tsi->tsi_pill->rc_req))
 486                 lustre_swab_lu_fid(fid);
 487
 488         if (!fid_is_sane(fid)) {
 489                 CERROR("%s: invalid FID "DFID": rc = %d\n",
 490                        tgt_name(tsi->tsi_tgt), PFID(fid), -EPROTO);
 491                 RETURN(-EPROTO);
 492         }
 493
 494         ptype = object_update_param_get(update, 2, &size);
 495         if (IS_ERR(ptype) || size != sizeof(*ptype)) {
 496                 CERROR("%s: invalid type for index insert: rc = %ld\n",
 497                        tgt_name(tsi->tsi_tgt), PTR_ERR(ptype));
 498                 RETURN(PTR_ERR(ptype));
 499         }
 500
 501         if (ptlrpc_req_need_swab(tsi->tsi_pill->rc_req))
 502                 __swab32s(ptype);
 503
 504         rec->rec_fid = fid;
 505         rec->rec_type = *ptype;
 506
 507         rc = out_tx_index_insert(tsi->tsi_env, obj, (const struct dt_rec *)rec,
 508                                  (const struct dt_key *)name, &tti->tti_tea,
 509                                  tti->tti_tea.ta_handle,
 510                                  tti->tti_u.update.tti_update_reply,
 511                                  tti->tti_u.update.tti_update_reply_index);
 512         RETURN(rc);
 513 }
 514
 515 static int out_index_delete(struct tgt_session_info *tsi)
 516 {
 517         struct tgt_thread_info  *tti = tgt_th_info(tsi->tsi_env);
 518         struct object_update    *update = tti->tti_u.update.tti_update;
 519         struct dt_object        *obj = tti->tti_u.update.tti_dt_object;
 520         char                    *name;
 521         int                      rc = 0;
 522
 523         if (!lu_object_exists(&obj->do_lu))
 524                 RETURN(-ENOENT);
 525
 526         name = object_update_param_get(update, 0, NULL);
 527         if (IS_ERR(name)) {
 528                 CERROR("%s: empty name for index delete: rc = %ld\n",
 529                        tgt_name(tsi->tsi_tgt), PTR_ERR(name));
 530                 RETURN(PTR_ERR(name));
 531         }
 532
 533         rc = out_tx_index_delete(tsi->tsi_env, obj, (const struct dt_key *)name,
 534                                  &tti->tti_tea, tti->tti_tea.ta_handle,
 535                                  tti->tti_u.update.tti_update_reply,
 536                                  tti->tti_u.update.tti_update_reply_index);
 537         RETURN(rc);
 538 }
 539
 540 static int out_destroy(struct tgt_session_info *tsi)
 541 {
 542         struct tgt_thread_info  *tti = tgt_th_info(tsi->tsi_env);
 543         struct object_update    *update = tti->tti_u.update.tti_update;
 544         struct dt_object        *obj = tti->tti_u.update.tti_dt_object;
 545         struct lu_fid           *fid;
 546         int                      rc;
 547         ENTRY;
 548
 549         fid = &update->ou_fid;
 550         if (!fid_is_sane(fid)) {
 551                 CERROR("%s: invalid FID "DFID": rc = %d\n",
 552                        tgt_name(tsi->tsi_tgt), PFID(fid), -EPROTO);
 553                 RETURN(-EPROTO);
 554         }
 555
 556         if (!lu_object_exists(&obj->do_lu))
 557                 RETURN(-ENOENT);
 558
 559         rc = out_tx_destroy(tsi->tsi_env, obj, &tti->tti_tea,
 560                             tti->tti_tea.ta_handle,
 561                             tti->tti_u.update.tti_update_reply,
 562                             tti->tti_u.update.tti_update_reply_index);
 563
 564         RETURN(rc);
 565 }
 566
 567 static int out_write(struct tgt_session_info *tsi)
 568 {
 569         struct tgt_thread_info  *tti = tgt_th_info(tsi->tsi_env);
 570         struct object_update    *update = tti->tti_u.update.tti_update;
 571         struct dt_object        *obj = tti->tti_u.update.tti_dt_object;
 572         struct lu_buf           *lbuf = &tti->tti_buf;
 573         char                    *buf;
 574         __u64                   *tmp;
 575         size_t                  size = 0;
 576         size_t                  buf_len = 0;
 577         loff_t                  pos;
 578         int                      rc;
 579         ENTRY;
 580
 581         buf = object_update_param_get(update, 0, &buf_len);
 582         if (IS_ERR(buf) || buf_len == 0) {
 583                 CERROR("%s: empty buf for xattr set: rc = %ld\n",
 584                        tgt_name(tsi->tsi_tgt), PTR_ERR(buf));
 585                 RETURN(PTR_ERR(buf));
 586         }
 587         lbuf->lb_buf = buf;
 588         lbuf->lb_len = buf_len;
 589
 590         tmp = object_update_param_get(update, 1, &size);
 591         if (IS_ERR(tmp) || size != sizeof(*tmp)) {
 592                 CERROR("%s: empty or wrong size %zu pos: rc = %ld\n",
 593                        tgt_name(tsi->tsi_tgt), size, PTR_ERR(tmp));
 594                 RETURN(PTR_ERR(tmp));
 595         }
 596
 597         if (ptlrpc_req_need_swab(tsi->tsi_pill->rc_req))
 598                 __swab64s(tmp);
 599         pos = *tmp;
 600
 601         rc = out_tx_write(tsi->tsi_env, obj, lbuf, pos,
 602                           &tti->tti_tea, tti->tti_tea.ta_handle,
 603                           tti->tti_u.update.tti_update_reply,
 604                           tti->tti_u.update.tti_update_reply_index);
 605         RETURN(rc);
 606 }
 607
 608 static int out_read(struct tgt_session_info *tsi)
 609 {
 610         const struct lu_env     *env = tsi->tsi_env;
 611         struct tgt_thread_info  *tti = tgt_th_info(env);
 612         struct object_update    *update = tti->tti_u.update.tti_update;
 613         struct dt_object        *obj = tti->tti_u.update.tti_dt_object;
 614         struct object_update_reply *reply = tti->tti_u.update.tti_update_reply;
 615         int index = tti->tti_u.update.tti_update_reply_index;
 616         struct lu_rdbuf *rdbuf;
 617         struct object_update_result *update_result;
 618         struct out_read_reply   *orr;
 619         void *tmp;
 620         size_t size;
 621         size_t total_size = 0;
 622         __u64 pos;
 623         unsigned int i;
 624         unsigned int nbufs;
 625         int rc = 0;
 626         ENTRY;
 627
 628         update_result = object_update_result_get(reply, index, NULL);
 629         LASSERT(update_result != NULL);
 630         update_result->our_datalen = sizeof(*orr);
 631
 632         if (!lu_object_exists(&obj->do_lu))
 633                 GOTO(out, rc = -ENOENT);
 634
 635         tmp = object_update_param_get(update, 0, NULL);
 636         if (IS_ERR(tmp)) {
 637                 CERROR("%s: empty size for read: rc = %ld\n",
 638                        tgt_name(tsi->tsi_tgt), PTR_ERR(tmp));
 639                 GOTO(out, rc = PTR_ERR(tmp));
 640         }
 641         size = le64_to_cpu(*(size_t *)(tmp));
 642
 643         tmp = object_update_param_get(update, 1, NULL);
 644         if (IS_ERR(tmp)) {
 645                 CERROR("%s: empty pos for read: rc = %ld\n",
 646                        tgt_name(tsi->tsi_tgt), PTR_ERR(tmp));
 647                 GOTO(out, rc = PTR_ERR(tmp));
 648         }
 649         pos = le64_to_cpu(*(__u64 *)(tmp));
 650
 651         /* Put the offset into the begining of the buffer in reply */
 652         orr = (struct out_read_reply *)update_result->our_data;
 653
 654         nbufs = (size + OUT_BULK_BUFFER_SIZE - 1) / OUT_BULK_BUFFER_SIZE;
 655         OBD_ALLOC(rdbuf, sizeof(struct lu_rdbuf) +
 656                          nbufs * sizeof(rdbuf->rb_bufs[0]));
 657         if (rdbuf == NULL)
 658                 GOTO(out, rc = -ENOMEM);
 659
 660         rdbuf->rb_nbufs = 0;
 661         total_size = 0;
 662         for (i = 0; i < nbufs; i++) {
 663                 __u32 read_size;
 664
 665                 read_size = size > OUT_BULK_BUFFER_SIZE ?
 666                             OUT_BULK_BUFFER_SIZE : size;
 667                 OBD_ALLOC(rdbuf->rb_bufs[i].lb_buf, read_size);
 668                 if (rdbuf->rb_bufs[i].lb_buf == NULL)
 669                         GOTO(out_free, rc = -ENOMEM);
 670
 671                 rdbuf->rb_bufs[i].lb_len = read_size;
 672                 dt_read_lock(env, obj, MOR_TGT_CHILD);
 673                 rc = dt_read(env, obj, &rdbuf->rb_bufs[i], &pos);
 674                 dt_read_unlock(env, obj);
 675
 676                 total_size += rc < 0 ? 0 : rc;
 677                 if (rc <= 0)
 678                         break;
 679
 680                 rdbuf->rb_nbufs++;
 681                 size -= read_size;
 682         }
 683
 684         /* send pages to client */
 685         rc = tgt_send_buffer(tsi, rdbuf);
 686         if (rc < 0)
 687                 GOTO(out_free, rc);
 688
 689         orr->orr_size = total_size;
 690         orr->orr_offset = pos;
 691
 692         orr_cpu_to_le(orr, orr);
 693         update_result->our_datalen += orr->orr_size;
 694 out_free:
 695         for (i = 0; i < nbufs; i++) {
 696                 if (rdbuf->rb_bufs[i].lb_buf != NULL) {
 697                         OBD_FREE(rdbuf->rb_bufs[i].lb_buf,
 698                                  rdbuf->rb_bufs[i].lb_len);
 699                 }
 700         }
 701         OBD_FREE(rdbuf, sizeof(struct lu_rdbuf) +
 702                         nbufs * sizeof(rdbuf->rb_bufs[0]));
 703 out:
 704         /* Insert read buffer */
 705         update_result->our_rc = ptlrpc_status_hton(rc);
 706         reply->ourp_lens[index] = cfs_size_round(update_result->our_datalen +
 707                                                  sizeof(*update_result));
 708         RETURN(rc);
 709 }
 710
 711 static int out_noop(struct tgt_session_info *tsi)
 712 {
 713         return 0;
 714 }
 715
 716 #define DEF_OUT_HNDL(opc, name, flags, fn)     \
 717 [opc - OUT_CREATE] = {                                  \
 718         .th_name    = name,                             \
 719         .th_fail_id = 0,                                \
 720         .th_opc     = opc,                              \
 721         .th_flags   = flags,                            \
 722         .th_act     = fn,                               \
 723         .th_fmt     = NULL,                             \
 724         .th_version = 0,                                \
 725 }
 726
 727 static struct tgt_handler out_update_ops[] = {
 728         DEF_OUT_HNDL(OUT_CREATE, "out_create", MUTABOR | HABEO_REFERO,
 729                      out_create),
 730         DEF_OUT_HNDL(OUT_DESTROY, "out_create", MUTABOR | HABEO_REFERO,
 731                      out_destroy),
 732         DEF_OUT_HNDL(OUT_REF_ADD, "out_ref_add", MUTABOR | HABEO_REFERO,
 733                      out_ref_add),
 734         DEF_OUT_HNDL(OUT_REF_DEL, "out_ref_del", MUTABOR | HABEO_REFERO,
 735                      out_ref_del),
 736         DEF_OUT_HNDL(OUT_ATTR_SET, "out_attr_set",  MUTABOR | HABEO_REFERO,
 737                      out_attr_set),
 738         DEF_OUT_HNDL(OUT_ATTR_GET, "out_attr_get",  HABEO_REFERO,
 739                      out_attr_get),
 740         DEF_OUT_HNDL(OUT_XATTR_SET, "out_xattr_set", MUTABOR | HABEO_REFERO,
 741                      out_xattr_set),
 742         DEF_OUT_HNDL(OUT_XATTR_DEL, "out_xattr_del", MUTABOR | HABEO_REFERO,
 743                      out_xattr_del),
 744         DEF_OUT_HNDL(OUT_XATTR_GET, "out_xattr_get", HABEO_REFERO,
 745                      out_xattr_get),
 746         DEF_OUT_HNDL(OUT_INDEX_LOOKUP, "out_index_lookup", HABEO_REFERO,
 747                      out_index_lookup),
 748         DEF_OUT_HNDL(OUT_INDEX_INSERT, "out_index_insert",
 749                      MUTABOR | HABEO_REFERO, out_index_insert),
 750         DEF_OUT_HNDL(OUT_INDEX_DELETE, "out_index_delete",
 751                      MUTABOR | HABEO_REFERO, out_index_delete),
 752         DEF_OUT_HNDL(OUT_WRITE, "out_write", MUTABOR | HABEO_REFERO, out_write),
 753         DEF_OUT_HNDL(OUT_READ, "out_read", HABEO_REFERO, out_read),
 754         DEF_OUT_HNDL(OUT_NOOP, "out_noop", HABEO_REFERO, out_noop),
 755 };
 756
 757 static struct tgt_handler *out_handler_find(__u32 opc)
 758 {
 759         struct tgt_handler *h;
 760
 761         h = NULL;
 762         if (OUT_CREATE <= opc && opc < OUT_LAST) {
 763                 h = &out_update_ops[opc - OUT_CREATE];
 764                 LASSERTF(h->th_opc == opc, "opcode mismatch %d != %d\n",
 765                          h->th_opc, opc);
 766         } else {
 767                 h = NULL; /* unsupported opc */
 768         }
 769         return h;
 770 }
 771
 772 static int out_tx_start(const struct lu_env *env, struct dt_device *dt,
 773                         struct thandle_exec_args *ta, struct obd_export *exp)
 774 {
 775         ta->ta_argno = 0;
 776         ta->ta_handle = dt_trans_create(env, dt);
 777         if (IS_ERR(ta->ta_handle)) {
 778                 int rc;
 779
 780                 rc = PTR_ERR(ta->ta_handle);
 781                 ta->ta_handle = NULL;
 782                 CERROR("%s: start handle error: rc = %d\n", dt_obd_name(dt),
 783                        rc);
 784                 return rc;
 785         }
 786         if (exp->exp_need_sync)
 787                 ta->ta_handle->th_sync = 1;
 788
 789         return 0;
 790 }
 791
 792 static int out_trans_start(const struct lu_env *env,
 793                            struct thandle_exec_args *ta)
 794 {
 795         return dt_trans_start(env, ta->ta_handle->th_dev, ta->ta_handle);
 796 }
 797
 798 static int out_trans_stop(const struct lu_env *env,
 799                           struct thandle_exec_args *ta, int err)
 800 {
 801         int i;
 802         int rc;
 803
 804         ta->ta_handle->th_result = err;
 805         rc = dt_trans_stop(env, ta->ta_handle->th_dev, ta->ta_handle);
 806         for (i = 0; i < ta->ta_argno; i++) {
 807                 if (ta->ta_args[i]->object != NULL) {
 808                         struct dt_object *obj = ta->ta_args[i]->object;
 809
 810                         /* If the object is being created during this
 811                          * transaction, we need to remove them from the
 812                          * cache immediately, because a few layers are
 813                          * missing in OUT handler, i.e. the object might
 814                          * not be initialized in all layers */
 815                         if (ta->ta_args[i]->exec_fn == out_tx_create_exec)
 816                                 set_bit(LU_OBJECT_HEARD_BANSHEE,
 817                                         &obj->do_lu.lo_header->loh_flags);
 818                         lu_object_put(env, &ta->ta_args[i]->object->do_lu);
 819                         ta->ta_args[i]->object = NULL;
 820                 }
 821         }
 822         ta->ta_handle = NULL;
 823         ta->ta_argno = 0;
 824
 825         return rc;
 826 }
 827
 828 static int out_tx_end(const struct lu_env *env, struct thandle_exec_args *ta,
 829                       int declare_ret)
 830 {
 831         struct tgt_session_info *tsi = tgt_ses_info(env);
 832         int                     i;
 833         int                     rc;
 834         int                     rc1;
 835         ENTRY;
 836
 837         if (ta->ta_handle == NULL)
 838                 RETURN(0);
 839
 840         if (declare_ret != 0 || ta->ta_argno == 0)
 841                 GOTO(stop, rc = declare_ret);
 842
 843         LASSERT(ta->ta_handle->th_dev != NULL);
 844         rc = out_trans_start(env, ta);
 845         if (unlikely(rc != 0))
 846                 GOTO(stop, rc);
 847
 848         for (i = 0; i < ta->ta_argno; i++) {
 849                 rc = ta->ta_args[i]->exec_fn(env, ta->ta_handle,
 850                                              ta->ta_args[i]);
 851                 if (unlikely(rc != 0)) {
 852                         CDEBUG(D_INFO, "error during execution of #%u from"
 853                                " %s:%d: rc = %d\n", i, ta->ta_args[i]->file,
 854                                ta->ta_args[i]->line, rc);
 855                         while (--i >= 0) {
 856                                 if (ta->ta_args[i]->undo_fn != NULL)
 857                                         ta->ta_args[i]->undo_fn(env,
 858                                                                ta->ta_handle,
 859                                                                ta->ta_args[i]);
 860                                 else
 861                                         CERROR("%s: undo for %s:%d: rc = %d\n",
 862                                              dt_obd_name(ta->ta_handle->th_dev),
 863                                                ta->ta_args[i]->file,
 864                                                ta->ta_args[i]->line, -ENOTSUPP);
 865                         }
 866                         break;
 867                 }
 868                 CDEBUG(D_INFO, "%s: executed %u/%u: rc = %d\n",
 869                        dt_obd_name(ta->ta_handle->th_dev), i, ta->ta_argno, rc);
 870         }
 871
 872         /* Only fail for real updates, XXX right now llog updates will be
 873         * ignore, whose updates count is usually 1, so failover test
 874         * case will spot this FAIL_UPDATE_NET_REP precisely, and it will
 875         * be removed after async update patch is landed. */
 876         if (ta->ta_argno > 1)
 877                 tsi->tsi_reply_fail_id = OBD_FAIL_OUT_UPDATE_NET_REP;
 878
 879 stop:
 880         rc1 = out_trans_stop(env, ta, rc);
 881         if (rc == 0)
 882                 rc = rc1;
 883
 884         ta->ta_handle = NULL;
 885         ta->ta_argno = 0;
 886
 887         RETURN(rc);
 888 }
 889
 890 /**
 891  * Object updates between Targets. Because all the updates has been
 892  * dis-assemblied into object updates at sender side, so OUT will
 893  * call OSD API directly to execute these updates.
 894  *
 895  * In DNE phase I all of the updates in the request need to be executed
 896  * in one transaction, and the transaction has to be synchronously.
 897  *
 898  * Please refer to lustre/include/lustre/lustre_idl.h for req/reply
 899  * format.
 900  */
 901 int out_handle(struct tgt_session_info *tsi)
 902 {
 903         const struct lu_env             *env = tsi->tsi_env;
 904         struct tgt_thread_info          *tti = tgt_th_info(env);
 905         struct thandle_exec_args        *ta = &tti->tti_tea;
 906         struct req_capsule              *pill = tsi->tsi_pill;
 907         struct dt_device                *dt = tsi->tsi_tgt->lut_bottom;
 908         struct out_update_header        *ouh;
 909         struct out_update_buffer        *oub = NULL;
 910         struct object_update            *update;
 911         struct object_update_reply      *reply;
 912         struct ptlrpc_bulk_desc         *desc = NULL;
 913         struct l_wait_info              lwi;
 914         void                            **update_bufs;
 915         int                             current_batchid = -1;
 916         __u32                           update_buf_count;
 917         unsigned int                    i;
 918         unsigned int                    reply_index = 0;
 919         int                             rc = 0;
 920         int                             rc1 = 0;
 921         int                             ouh_size, reply_size;
 922         int                             updates;
 923         ENTRY;
 924
 925         req_capsule_set(pill, &RQF_OUT_UPDATE);
 926         ouh_size = req_capsule_get_size(pill, &RMF_OUT_UPDATE_HEADER,
 927                                         RCL_CLIENT);
 928         if (ouh_size <= 0)
 929                 RETURN(err_serious(-EPROTO));
 930
 931         ouh = req_capsule_client_get(pill, &RMF_OUT_UPDATE_HEADER);
 932         if (ouh == NULL)
 933                 RETURN(err_serious(-EPROTO));
 934
 935         if (ouh->ouh_magic != OUT_UPDATE_HEADER_MAGIC) {
 936                 CERROR("%s: invalid update buffer magic %x expect %x: "
 937                        "rc = %d\n", tgt_name(tsi->tsi_tgt), ouh->ouh_magic,
 938                        UPDATE_REQUEST_MAGIC, -EPROTO);
 939                 RETURN(err_serious(-EPROTO));
 940         }
 941
 942         update_buf_count = ouh->ouh_count;
 943         if (update_buf_count == 0)
 944                 RETURN(err_serious(-EPROTO));
 945
 946         OBD_ALLOC(update_bufs, sizeof(*update_bufs) * update_buf_count);
 947         if (update_bufs == NULL)
 948                 RETURN(err_serious(-ENOMEM));
 949
 950         if (ouh->ouh_inline_length > 0) {
 951                 update_bufs[0] = ouh->ouh_inline_data;
 952         } else {
 953                 struct out_update_buffer *tmp;
 954
 955                 oub = req_capsule_client_get(pill, &RMF_OUT_UPDATE_BUF);
 956                 if (oub == NULL)
 957                         GOTO(out_free, rc = err_serious(-EPROTO));
 958
 959                 desc = ptlrpc_prep_bulk_exp(pill->rc_req, update_buf_count,
 960                                             PTLRPC_BULK_OPS_COUNT,
 961                                             PTLRPC_BULK_GET_SINK |
 962                                             PTLRPC_BULK_BUF_KVEC,
 963                                             MDS_BULK_PORTAL,
 964                                             &ptlrpc_bulk_kvec_ops);
 965                 if (desc == NULL)
 966                         GOTO(out_free, rc = err_serious(-ENOMEM));
 967
 968                 tmp = oub;
 969                 for (i = 0; i < update_buf_count; i++, tmp++) {
 970                         if (tmp->oub_size >= OUT_MAXREQSIZE)
 971                                 GOTO(out_free, rc = err_serious(-EPROTO));
 972
 973                         OBD_ALLOC(update_bufs[i], tmp->oub_size);
 974                         if (update_bufs[i] == NULL)
 975                                 GOTO(out_free, rc = err_serious(-ENOMEM));
 976
 977                         desc->bd_frag_ops->add_iov_frag(desc, update_bufs[i],
 978                                                         tmp->oub_size);
 979                 }
 980
 981                 pill->rc_req->rq_bulk_write = 1;
 982                 rc = sptlrpc_svc_prep_bulk(pill->rc_req, desc);
 983                 if (rc != 0)
 984                         GOTO(out_free, rc = err_serious(rc));
 985
 986                 rc = target_bulk_io(pill->rc_req->rq_export, desc, &lwi);
 987                 if (rc < 0)
 988                         GOTO(out_free, rc = err_serious(rc));
 989         }
 990         /* validate the request and calculate the total update count and
 991          * set it to reply */
 992         reply_size = 0;
 993         updates = 0;
 994         for (i = 0; i < update_buf_count; i++) {
 995                 struct object_update_request    *our;
 996                 int                              j;
 997
 998                 our = update_bufs[i];
 999                 if (ptlrpc_req_need_swab(pill->rc_req))
1000                         lustre_swab_object_update_request(our);
1001
1002                 if (our->ourq_magic != UPDATE_REQUEST_MAGIC) {
1003                         CERROR("%s: invalid update buffer magic %x"
1004                                " expect %x: rc = %d\n",
1005                                tgt_name(tsi->tsi_tgt), our->ourq_magic,
1006                                UPDATE_REQUEST_MAGIC, -EPROTO);
1007                         GOTO(out_free, rc = err_serious(-EPROTO));
1008                 }
1009                 updates += our->ourq_count;
1010
1011                 /* need to calculate reply size */
1012                 for (j = 0; j < our->ourq_count; j++) {
1013                         update = object_update_request_get(our, j, NULL);
1014                         if (update == NULL)
1015                                 GOTO(out, rc = err_serious(-EPROTO));
1016                         if (ptlrpc_req_need_swab(pill->rc_req))
1017                                 lustre_swab_object_update(update);
1018
1019                         if (!fid_is_sane(&update->ou_fid)) {
1020                                 CERROR("%s: invalid FID "DFID": rc = %d\n",
1021                                        tgt_name(tsi->tsi_tgt),
1022                                        PFID(&update->ou_fid), -EPROTO);
1023                                 GOTO(out, rc = err_serious(-EPROTO));
1024                         }
1025
1026                         /* XXX: what ou_result_size can be considered safe? */
1027
1028                         reply_size += sizeof(reply->ourp_lens[0]);
1029                         reply_size += sizeof(struct object_update_result);
1030                         reply_size += update->ou_result_size;
1031                 }
1032         }
1033         reply_size += sizeof(*reply);
1034
1035         if (unlikely(reply_size > ouh->ouh_reply_size)) {
1036                 CERROR("%s: too small reply buf %u for %u, need %u at least\n",
1037                        tgt_name(tsi->tsi_tgt), ouh->ouh_reply_size,
1038                        updates, reply_size);
1039                 GOTO(out_free, rc = err_serious(-EPROTO));
1040         }
1041
1042         req_capsule_set_size(pill, &RMF_OUT_UPDATE_REPLY, RCL_SERVER,
1043                              ouh->ouh_reply_size);
1044         rc = req_capsule_server_pack(pill);
1045         if (rc != 0) {
1046                 CERROR("%s: Can't pack response: rc = %d\n",
1047                        tgt_name(tsi->tsi_tgt), rc);
1048                 GOTO(out_free, rc = err_serious(-EPROTO));
1049         }
1050
1051         /* Prepare the update reply buffer */
1052         reply = req_capsule_server_get(pill, &RMF_OUT_UPDATE_REPLY);
1053         if (reply == NULL)
1054                 GOTO(out_free, rc = -EPROTO);
1055         reply->ourp_magic = UPDATE_REPLY_MAGIC;
1056         reply->ourp_count = updates;
1057         tti->tti_u.update.tti_update_reply = reply;
1058         tti->tti_mult_trans = !req_is_replay(tgt_ses_req(tsi));
1059
1060         /* Walk through updates in the request to execute them */
1061         for (i = 0; i < update_buf_count; i++) {
1062                 struct tgt_handler      *h;
1063                 struct dt_object        *dt_obj;
1064                 int                     update_count;
1065                 struct object_update_request *our;
1066                 int                     j;
1067
1068                 our = update_bufs[i];
1069                 update_count = our->ourq_count;
1070                 for (j = 0; j < update_count; j++) {
1071                         struct lu_object_conf conf;
1072
1073                         update = object_update_request_get(our, j, NULL);
1074                         if (update->ou_type == OUT_CREATE)
1075                                 conf.loc_flags = LOC_F_NEW;
1076                         else
1077                                 conf.loc_flags = 0;
1078
1079                         dt_obj = dt_locate_at(env, dt, &update->ou_fid,
1080                                 dt->dd_lu_dev.ld_site->ls_top_dev, &conf);
1081                         if (IS_ERR(dt_obj))
1082                                 GOTO(out, rc = PTR_ERR(dt_obj));
1083
1084                         if (dt->dd_record_fid_accessed) {
1085                                 lfsck_pack_rfa(&tti->tti_lr,
1086                                                lu_object_fid(&dt_obj->do_lu),
1087                                                LE_FID_ACCESSED,
1088                                                LFSCK_TYPE_LAYOUT);
1089                                 tgt_lfsck_in_notify(env, dt, &tti->tti_lr,
1090                                                     NULL);
1091                         }
1092
1093                         tti->tti_u.update.tti_dt_object = dt_obj;
1094                         tti->tti_u.update.tti_update = update;
1095                         tti->tti_u.update.tti_update_reply_index = reply_index;
1096
1097                         h = out_handler_find(update->ou_type);
1098                         if (unlikely(h == NULL)) {
1099                                 CERROR("%s: unsupported opc: 0x%x\n",
1100                                        tgt_name(tsi->tsi_tgt), update->ou_type);
1101                                 GOTO(next, rc = -ENOTSUPP);
1102                         }
1103
1104                         /* Check resend case only for modifying RPC */
1105                         if (h->th_flags & MUTABOR) {
1106                                 struct ptlrpc_request *req = tgt_ses_req(tsi);
1107
1108                                 if (out_check_resent(env, dt, dt_obj, req,
1109                                                      out_reconstruct, reply,
1110                                                      reply_index))
1111                                         GOTO(next, rc = 0);
1112                         }
1113
1114                         /* start transaction for modification RPC only */
1115                         if (h->th_flags & MUTABOR && current_batchid == -1) {
1116                                 current_batchid = update->ou_batchid;
1117                                 rc = out_tx_start(env, dt, ta, tsi->tsi_exp);
1118                                 if (rc != 0)
1119                                         GOTO(next, rc);
1120
1121                                 if (update->ou_flags & UPDATE_FL_SYNC)
1122                                         ta->ta_handle->th_sync = 1;
1123                         }
1124
1125                         /* Stop the current update transaction, if the update
1126                          * has different batchid, or read-only update */
1127                         if (((current_batchid != update->ou_batchid) ||
1128                              !(h->th_flags & MUTABOR)) &&
1129                              ta->ta_handle != NULL) {
1130                                 rc = out_tx_end(env, ta, rc);
1131                                 current_batchid = -1;
1132                                 if (rc != 0)
1133                                         GOTO(next, rc);
1134
1135                                 /* start a new transaction if needed */
1136                                 if (h->th_flags & MUTABOR) {
1137                                         rc = out_tx_start(env, dt, ta,
1138                                                           tsi->tsi_exp);
1139                                         if (rc != 0)
1140                                                 GOTO(next, rc);
1141                                         if (update->ou_flags & UPDATE_FL_SYNC)
1142                                                 ta->ta_handle->th_sync = 1;
1143                                         current_batchid = update->ou_batchid;
1144                                 }
1145                         }
1146
1147                         rc = h->th_act(tsi);
1148 next:
1149                         reply_index++;
1150                         lu_object_put(env, &dt_obj->do_lu);
1151                         if (rc < 0)
1152                                 GOTO(out, rc);
1153                 }
1154         }
1155 out:
1156         if (current_batchid != -1) {
1157                 rc1 = out_tx_end(env, ta, rc);
1158                 if (rc == 0)
1159                         rc = rc1;
1160         }
1161
1162 out_free:
1163         if (update_bufs != NULL) {
1164                 if (oub != NULL) {
1165                         for (i = 0; i < update_buf_count; i++, oub++) {
1166                                 if (update_bufs[i] != NULL)
1167                                         OBD_FREE(update_bufs[i], oub->oub_size);
1168                         }
1169                 }
1170
1171                 OBD_FREE(update_bufs, sizeof(*update_bufs) * update_buf_count);
1172         }
1173
1174         if (desc != NULL)
1175                 ptlrpc_free_bulk(desc);
1176
1177         RETURN(rc);
1178 }
1179
1180 struct tgt_handler tgt_out_handlers[] = {
1181 TGT_UPDATE_HDL(MUTABOR, OUT_UPDATE,     out_handle),
1182 };
1183 EXPORT_SYMBOL(tgt_out_handlers);
1184