lustre/mdc/mdc_request.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * Copyright (C) 2001, 2002 Cluster File Systems, Inc.
   5  *
   6  *   This file is part of Lustre, http://www.sf.net/projects/lustre/
   7  *
   8  *   Lustre is free software; you can redistribute it and/or
   9  *   modify it under the terms of version 2 of the GNU General Public
  10  *   License as published by the Free Software Foundation.
  11  *
  12  *   Lustre is distributed in the hope that it will be useful,
  13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *   GNU General Public License for more details.
  16  *
  17  *   You should have received a copy of the GNU General Public License
  18  *   along with Lustre; if not, write to the Free Software
  19  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  *
  21  */
  22
  23 #define EXPORT_SYMTAB
  24 #define DEBUG_SUBSYSTEM S_MDC
  25
  26 #include <linux/module.h>
  27 #include <linux/miscdevice.h>
  28 #include <linux/lustre_mds.h>
  29 #include <linux/lustre_lite.h>
  30 #include <linux/lustre_dlm.h>
  31
  32 #define REQUEST_MINOR 244
  33
  34 extern int mds_queue_req(struct ptlrpc_request *);
  35
  36
  37 int mdc_getstatus(struct obd_conn *conn, struct ll_fid *rootfid,
  38                   __u64 *last_committed, __u64 *last_rcvd,
  39                   __u32 *last_xid, struct ptlrpc_request **request)
  40 {
  41         struct ptlrpc_request *req;
  42         struct mds_body *body;
  43         struct mdc_obd *mdc = mdc_conn2mdc(conn);
  44         int rc, size = sizeof(*body);
  45         ENTRY;
  46
  47         req = ptlrpc_prep_req(mdc->mdc_client, mdc->mdc_conn,
  48                               MDS_GETSTATUS, 1, &size, NULL);
  49         if (!req)
  50                 GOTO(out, rc = -ENOMEM);
  51
  52         body = lustre_msg_buf(req->rq_reqmsg, 0);
  53         req->rq_level = LUSTRE_CONN_CON;
  54         req->rq_replen = lustre_msg_size(1, &size);
  55
  56         mds_pack_req_body(req);
  57         rc = ptlrpc_queue_wait(req);
  58         rc = ptlrpc_check_status(req, rc);
  59
  60         if (!rc) {
  61                 body = lustre_msg_buf(req->rq_repmsg, 0);
  62                 mds_unpack_body(body);
  63                 memcpy(rootfid, &body->fid1, sizeof(*rootfid));
  64                 *last_committed = req->rq_repmsg->last_committed;
  65                 *last_rcvd = req->rq_repmsg->last_rcvd;
  66                 *last_xid = body->last_xid;
  67
  68                 CDEBUG(D_NET, "root ino=%ld, last_committed=%Lu, last_rcvd=%Lu,"
  69                        " last_xid=%d\n",
  70                        (unsigned long)rootfid->id,
  71                        (unsigned long long)*last_committed,
  72                        (unsigned long long)*last_rcvd,
  73                        body->last_xid);
  74         }
  75
  76         EXIT;
  77  out:
  78         ptlrpc_free_req(req);
  79         return rc;
  80 }
  81
  82
  83 int mdc_getattr(struct obd_conn *conn,
  84                 ino_t ino, int type, unsigned long valid, size_t ea_size,
  85                 struct ptlrpc_request **request)
  86 {
  87         struct mdc_obd *mdc = mdc_conn2mdc(conn);
  88         struct ptlrpc_request *req;
  89         struct mds_body *body;
  90         int rc, size[2] = {sizeof(*body), 0}, bufcount = 1;
  91         ENTRY;
  92
  93         req = ptlrpc_prep_req(mdc->mdc_client, mdc->mdc_conn,
  94                               MDS_GETATTR, 1, size, NULL);
  95         if (!req)
  96                 GOTO(out, rc = -ENOMEM);
  97
  98         body = lustre_msg_buf(req->rq_reqmsg, 0);
  99         ll_ino2fid(&body->fid1, ino, 0, type);
 100         body->valid = valid;
 101
 102         if (S_ISREG(type)) {
 103                 bufcount = 2;
 104                 size[1] = sizeof(struct obdo);
 105         } else if (valid & OBD_MD_LINKNAME) {
 106                 bufcount = 2;
 107                 size[1] = ea_size;
 108         }
 109         req->rq_replen = lustre_msg_size(bufcount, size);
 110         req->rq_level = LUSTRE_CONN_FULL;
 111
 112         rc = ptlrpc_queue_wait(req);
 113         rc = ptlrpc_check_status(req, rc);
 114
 115         if (!rc) {
 116                 body = lustre_msg_buf(req->rq_repmsg, 0);
 117                 mds_unpack_body(body);
 118                 CDEBUG(D_NET, "mode: %o\n", body->mode);
 119         }
 120
 121         EXIT;
 122  out:
 123         *request = req;
 124         return rc;
 125 }
 126
 127 static int mdc_lock_callback(struct ldlm_lock *lock, struct ldlm_lock *new,
 128                              void *data, int data_len)
 129 {
 130         int rc;
 131         struct inode *inode = data;
 132         ENTRY;
 133
 134         if (new == NULL) {
 135                 /* Completion AST.  Do nothing. */
 136                 RETURN(0);
 137         }
 138
 139         if (data_len != sizeof(*inode)) {
 140                 CERROR("data_len should be %d, but is %d\n", sizeof(*inode),
 141                        data_len);
 142                 LBUG();
 143         }
 144
 145         /* FIXME: do something better than throwing away everything */
 146         if (inode == NULL)
 147                 LBUG();
 148         if (S_ISDIR(inode->i_mode)) {
 149                 CDEBUG(D_INODE, "invalidating inode %ld\n", inode->i_ino);
 150                 invalidate_inode_pages(inode);
 151         }
 152
 153         rc = ldlm_cli_cancel(lock->l_client, lock);
 154         if (rc < 0) {
 155                 CERROR("ldlm_cli_cancel: %d\n", rc);
 156                 LBUG();
 157         }
 158         RETURN(0);
 159 }
 160
 161 int mdc_enqueue(struct obd_conn *conn, int lock_type, struct lookup_intent *it,
 162                 int lock_mode, struct inode *dir, struct dentry *de,
 163                 struct lustre_handle *lockh, __u64 id, char *tgt, int tgtlen,
 164                 void *data, int datalen)
 165 {
 166         struct ptlrpc_request *req;
 167         struct obd_device *obddev = conn->oc_dev;
 168         struct mdc_obd *mdc = mdc_conn2mdc(conn);
 169         __u64 res_id[RES_NAME_SIZE] = {dir->i_ino};
 170         int size[5] = {sizeof(struct ldlm_request), sizeof(struct ldlm_intent)};
 171         int rc, flags;
 172         struct ldlm_reply *dlm_rep;
 173         struct ldlm_intent *lit;
 174         ENTRY;
 175
 176         switch (it->it_op) {
 177         case IT_MKDIR:
 178                 it->it_mode = (it->it_mode | S_IFDIR) & ~current->fs->umask;
 179                 break;
 180         case IT_SETATTR:
 181                 it->it_op = IT_GETATTR;
 182                 break;
 183         case (IT_CREAT|IT_OPEN):
 184         case IT_CREAT:
 185                 it->it_mode = (it->it_mode | S_IFREG) & ~current->fs->umask;
 186                 break;
 187         case IT_SYMLINK:
 188                 it->it_mode = (it->it_mode | S_IFLNK) & ~current->fs->umask;
 189                 break;
 190         }
 191
 192         if (it->it_op & (IT_MKDIR | IT_CREAT | IT_SYMLINK | IT_MKNOD)) {
 193                 size[2] = sizeof(struct mds_rec_create);
 194                 size[3] = de->d_name.len + 1;
 195                 size[4] = tgtlen + 1;
 196                 req = ptlrpc_prep_req(mdc->mdc_ldlm_client, mdc->mdc_conn,
 197                                       LDLM_ENQUEUE, 5, size, NULL);
 198                 if (!req)
 199                         RETURN(-ENOMEM);
 200
 201                 /* pack the intent */
 202                 lit = lustre_msg_buf(req->rq_reqmsg, 1);
 203                 lit->opc = NTOH__u64((__u64)it->it_op);
 204
 205                 /* pack the intended request */
 206                 mds_create_pack(req, 2, dir, it->it_mode, id, current->fsuid,
 207                                 current->fsgid, CURRENT_TIME, de->d_name.name,
 208                                 de->d_name.len, tgt, tgtlen);
 209
 210                 size[0] = sizeof(struct ldlm_reply);
 211                 size[1] = sizeof(struct mds_body);
 212                 size[2] = sizeof(struct obdo);
 213                 req->rq_replen = lustre_msg_size(3, size);
 214         } else if ( it->it_op == IT_RENAME2 ) {
 215                 struct dentry *old_de = it->it_data;
 216
 217                 size[2] = sizeof(struct mds_rec_rename);
 218                 size[3] = old_de->d_name.len + 1;
 219                 size[4] = de->d_name.len + 1;
 220                 req = ptlrpc_prep_req(mdc->mdc_ldlm_client, mdc->mdc_conn,
 221                                       LDLM_ENQUEUE, 5, size, NULL);
 222                 if (!req)
 223                         RETURN(-ENOMEM);
 224
 225                 /* pack the intent */
 226                 lit = lustre_msg_buf(req->rq_reqmsg, 1);
 227                 lit->opc = NTOH__u64((__u64)it->it_op);
 228
 229                 /* pack the intended request */
 230                 mds_rename_pack(req, 2, old_de->d_inode, dir,
 231                                 old_de->d_parent->d_name.name,
 232                                 old_de->d_parent->d_name.len,
 233                                 de->d_name.name, de->d_name.len);
 234
 235                 size[0] = sizeof(struct ldlm_reply);
 236                 size[1] = sizeof(struct mds_body);
 237                 req->rq_replen = lustre_msg_size(2, size);
 238         } else if ( it->it_op == IT_GETATTR || it->it_op == IT_RENAME ||
 239                     it->it_op == IT_OPEN ) {
 240                 size[2] = sizeof(struct mds_body);
 241                 size[3] = de->d_name.len + 1;
 242
 243                 req = ptlrpc_prep_req(mdc->mdc_ldlm_client, mdc->mdc_conn,
 244                                       LDLM_ENQUEUE, 4, size, NULL);
 245                 if (!req)
 246                         RETURN(-ENOMEM);
 247
 248                 /* pack the intent */
 249                 lit = lustre_msg_buf(req->rq_reqmsg, 1);
 250                 lit->opc = NTOH__u64((__u64)it->it_op);
 251
 252                 /* pack the intended request */
 253                 mds_getattr_pack(req, 2, dir, de->d_name.name, de->d_name.len);
 254
 255                 /* get ready for the reply */
 256                 size[0] = sizeof(struct ldlm_reply);
 257                 size[1] = sizeof(struct mds_body);
 258                 size[2] = sizeof(struct obdo);
 259                 req->rq_replen = lustre_msg_size(3, size);
 260         } else if ( it->it_op == IT_SETATTR) {
 261                 size[2] = sizeof(struct mds_rec_setattr);
 262                 size[3] = de->d_name.len + 1;
 263                 req = ptlrpc_prep_req(mdc->mdc_ldlm_client, mdc->mdc_conn,
 264                                       LDLM_ENQUEUE, 5, size, NULL);
 265                 if (!req)
 266                         RETURN(-ENOMEM);
 267
 268                 lit = lustre_msg_buf(req->rq_reqmsg, 1);
 269                 lit->opc = NTOH__u64((__u64)it->it_op);
 270
 271                 if (!it->it_iattr)
 272                         LBUG();
 273
 274                 mds_setattr_pack(req, 2, dir, it->it_iattr,
 275                                 de->d_name.name, de->d_name.len);
 276                 size[0] = sizeof(struct ldlm_reply);
 277                 size[1] = sizeof(struct mds_body);
 278                 req->rq_replen = lustre_msg_size(2, size);
 279         } else if ( it->it_op == IT_READDIR ) {
 280                 req = ptlrpc_prep_req(mdc->mdc_ldlm_client, mdc->mdc_conn,
 281                                       LDLM_ENQUEUE, 1, size, NULL);
 282                 if (!req)
 283                         RETURN(-ENOMEM);
 284
 285                 /* get ready for the reply */
 286                 size[0] = sizeof(struct ldlm_reply);
 287                 req->rq_replen = lustre_msg_size(1, size);
 288         } else {
 289                 LBUG();
 290         }
 291 #warning FIXME: the data here needs to be different if a lock was granted for a different inode
 292         rc = ldlm_cli_enqueue(mdc->mdc_ldlm_client, mdc->mdc_conn, req,
 293                               obddev->obd_namespace, NULL, res_id, lock_type,
 294                               NULL, 0, lock_mode, &flags,
 295                               (void *)mdc_lock_callback, data, datalen, lockh);
 296
 297         if (rc != 0) {
 298                 CERROR("ldlm_cli_enqueue: %d\n", rc);
 299                 RETURN(rc);
 300         }
 301
 302         dlm_rep = lustre_msg_buf(req->rq_repmsg, 0);
 303         it->it_disposition = (int) dlm_rep->lock_policy_res1;
 304         it->it_status = (int) dlm_rep->lock_policy_res2;
 305         it->it_lock_mode = lock_mode;
 306         it->it_data = req;
 307
 308         RETURN(0);
 309 }
 310
 311 int mdc_open(struct obd_conn *conn, ino_t ino, int type, int flags,
 312              struct obdo *obdo,
 313              __u64 cookie, __u64 *fh, struct ptlrpc_request **request)
 314 {
 315         struct mdc_obd *mdc = mdc_conn2mdc(conn);
 316         struct mds_body *body;
 317         int rc, size[2] = {sizeof(*body)}, bufcount = 1;
 318         struct ptlrpc_request *req;
 319
 320         if (obdo != NULL) {
 321                 bufcount = 2;
 322                 size[1] = sizeof(*obdo);
 323         }
 324
 325         req = ptlrpc_prep_req(mdc->mdc_client, mdc->mdc_conn,
 326                               MDS_OPEN, bufcount, size, NULL);
 327         if (!req)
 328                 GOTO(out, rc = -ENOMEM);
 329
 330         req->rq_flags |= PTL_RPC_FL_REPLAY;
 331         req->rq_level = LUSTRE_CONN_FULL;
 332         body = lustre_msg_buf(req->rq_reqmsg, 0);
 333
 334         ll_ino2fid(&body->fid1, ino, 0, type);
 335         body->flags = HTON__u32(flags);
 336         body->extra = cookie;
 337
 338         if (obdo != NULL)
 339                 memcpy(lustre_msg_buf(req->rq_reqmsg, 1), obdo, sizeof(*obdo));
 340
 341         req->rq_replen = lustre_msg_size(1, size);
 342
 343         rc = ptlrpc_queue_wait(req);
 344         rc = ptlrpc_check_status(req, rc);
 345
 346         if (!rc) {
 347                 body = lustre_msg_buf(req->rq_repmsg, 0);
 348                 mds_unpack_body(body);
 349                 *fh = body->extra;
 350         }
 351
 352         EXIT;
 353  out:
 354         *request = req;
 355         return rc;
 356 }
 357
 358 int mdc_close(struct obd_conn *conn,
 359               ino_t ino, int type, __u64 fh, struct ptlrpc_request **request)
 360 {
 361         struct mdc_obd *mdc = mdc_conn2mdc(conn);
 362         struct mds_body *body;
 363         int rc, size = sizeof(*body);
 364         struct ptlrpc_request *req;
 365
 366         req = ptlrpc_prep_req(mdc->mdc_client, mdc->mdc_conn,
 367                               MDS_CLOSE, 1, &size, NULL);
 368         if (!req)
 369                 GOTO(out, rc = -ENOMEM);
 370
 371         body = lustre_msg_buf(req->rq_reqmsg, 0);
 372         ll_ino2fid(&body->fid1, ino, 0, type);
 373         body->extra = fh;
 374
 375         req->rq_level = LUSTRE_CONN_FULL;
 376         req->rq_replen = lustre_msg_size(0, NULL);
 377
 378         rc = ptlrpc_queue_wait(req);
 379         rc = ptlrpc_check_status(req, rc);
 380
 381         EXIT;
 382  out:
 383         *request = req;
 384         return rc;
 385 }
 386
 387 int mdc_readpage(struct obd_conn *conn, ino_t ino, int type, __u64 offset,
 388                  char *addr, struct ptlrpc_request **request)
 389 {
 390         struct mdc_obd *mdc = mdc_conn2mdc(conn);
 391         struct ptlrpc_request *req = NULL;
 392         struct ptlrpc_bulk_desc *desc = NULL;
 393         struct ptlrpc_bulk_page *bulk = NULL;
 394         struct mds_body *body;
 395         int rc, size = sizeof(*body);
 396         ENTRY;
 397
 398         CDEBUG(D_INODE, "inode: %ld\n", (long)ino);
 399
 400         desc = ptlrpc_prep_bulk(mdc->mdc_conn);
 401         if (desc == NULL)
 402                 GOTO(out, rc = -ENOMEM);
 403
 404         req = ptlrpc_prep_req(mdc->mdc_client, mdc->mdc_conn,
 405                               MDS_READPAGE, 1, &size, NULL);
 406         if (!req)
 407                 GOTO(out2, rc = -ENOMEM);
 408
 409         bulk = ptlrpc_prep_bulk_page(desc);
 410         bulk->b_buflen = PAGE_SIZE;
 411         bulk->b_buf = addr;
 412         bulk->b_xid = req->rq_xid;
 413         desc->b_portal = MDS_BULK_PORTAL;
 414
 415         rc = ptlrpc_register_bulk(desc);
 416         if (rc) {
 417                 CERROR("couldn't setup bulk sink: error %d.\n", rc);
 418                 GOTO(out2, rc);
 419         }
 420
 421         body = lustre_msg_buf(req->rq_reqmsg, 0);
 422         body->fid1.id = ino;
 423         body->fid1.f_type = type;
 424         body->size = offset;
 425
 426         req->rq_replen = lustre_msg_size(1, &size);
 427         req->rq_level = LUSTRE_CONN_FULL;
 428         rc = ptlrpc_queue_wait(req);
 429         rc = ptlrpc_check_status(req, rc);
 430         if (rc) {
 431                 ptlrpc_abort_bulk(desc);
 432                 GOTO(out2, rc);
 433         } else {
 434                 body = lustre_msg_buf(req->rq_repmsg, 0);
 435                 mds_unpack_body(body);
 436         }
 437
 438         EXIT;
 439  out2:
 440         ptlrpc_free_bulk(desc);
 441  out:
 442         *request = req;
 443         return rc;
 444 }
 445
 446 #if 0
 447 int mdc_statfs(struct ptlrpc_client *cl, struct ptlrpc_connection *conn,
 448                struct statfs *statfs,
 449                struct ptlrpc_request **request)
 450 {
 451         struct mds_rec_setattr *rec;
 452         struct ptlrpc_request *req;
 453         int rc, size = sizeof(*rec);
 454         ENTRY;
 455
 456         req = ptlrpc_prep_req(cl, conn, MDS_STATFS, 1, &size, NULL);
 457         if (!req)
 458                 RETURN(-ENOMEM);
 459
 460         rec = lustre_msg_buf(req->rq_reqmsg, 0);
 461         mds_setattr_pack(rec, inode, iattr);
 462
 463         size = sizeof(struct mds_body);
 464         req->rq_replen = lustre_msg_size(1, &size);
 465
 466         rc = mdc_reint(cl, req, LUSTRE_CONN_FULL);
 467         *request = req;
 468         if (rc == -ERESTARTSYS )
 469                 rc = 0;
 470
 471         RETURN(rc);
 472 }
 473 #endif
 474
 475 static int mdc_ioctl(long cmd, struct obd_conn *conn, int len, void *karg,
 476                      void *uarg)
 477 {
 478 #if 0
 479         /* FIXME XXX : This should use the new ioc_data to pass args in */
 480         int err = 0;
 481         struct ptlrpc_client cl;
 482         struct ptlrpc_connection *conn;
 483         struct ptlrpc_request *request;
 484
 485         ENTRY;
 486
 487         if (_IOC_TYPE(cmd) != IOC_REQUEST_TYPE ||
 488             _IOC_NR(cmd) < IOC_REQUEST_MIN_NR  ||
 489             _IOC_NR(cmd) > IOC_REQUEST_MAX_NR ) {
 490                 CDEBUG(D_IOCTL, "invalid ioctl ( type %d, nr %d, size %d )\n",
 491                        _IOC_TYPE(cmd), _IOC_NR(cmd), _IOC_SIZE(cmd));
 492                 RETURN(-EINVAL);
 493         }
 494
 495         ptlrpc_init_client(NULL, NULL,
 496                            MDS_REQUEST_PORTAL, MDC_REPLY_PORTAL, &cl);
 497         connection = ptlrpc_uuid_to_connection("mds");
 498         if (!connection) {
 499                 CERROR("cannot create client\n");
 500                 RETURN(-EINVAL);
 501         }
 502
 503         switch (cmd) {
 504         case IOC_REQUEST_GETATTR: {
 505                 CERROR("-- getting attr for ino %lu\n", arg);
 506                 err = mdc_getattr(&cl, connection, arg, S_IFDIR, ~0, 0,
 507                                   &request);
 508                 CERROR("-- done err %d\n", err);
 509
 510                 GOTO(out, err);
 511         }
 512
 513         case IOC_REQUEST_READPAGE: {
 514                 char *buf;
 515                 OBD_ALLOC(buf, PAGE_SIZE);
 516                 if (!buf) {
 517                         err = -ENOMEM;
 518                         GOTO(out, err);
 519                 }
 520                 CERROR("-- readpage 0 for ino %lu\n", arg);
 521                 err = mdc_readpage(&cl, connection, arg, S_IFDIR, 0, buf,
 522                                    &request);
 523                 CERROR("-- done err %d\n", err);
 524                 OBD_FREE(buf, PAGE_SIZE);
 525
 526                 GOTO(out, err);
 527         }
 528
 529         case IOC_REQUEST_SETATTR: {
 530                 struct inode inode;
 531                 struct iattr iattr;
 532
 533                 inode.i_ino = arg;
 534                 inode.i_generation = 0;
 535                 iattr.ia_mode = 040777;
 536                 iattr.ia_atime = 0;
 537                 iattr.ia_valid = ATTR_MODE | ATTR_ATIME;
 538
 539                 err = mdc_setattr(&cl, connection, &inode, &iattr, &request);
 540                 CERROR("-- done err %d\n", err);
 541
 542                 GOTO(out, err);
 543         }
 544
 545         case IOC_REQUEST_CREATE: {
 546                 struct inode inode;
 547                 struct iattr iattr;
 548
 549                 inode.i_ino = arg;
 550                 inode.i_generation = 0;
 551                 iattr.ia_mode = 040777;
 552                 iattr.ia_atime = 0;
 553                 iattr.ia_valid = ATTR_MODE | ATTR_ATIME;
 554
 555                 err = mdc_create(&cl, connection, &inode,
 556                                  "foofile", strlen("foofile"),
 557                                  NULL, 0, 0100707, 47114711,
 558                                  11, 47, 0, NULL, &request);
 559                 CERROR("-- done err %d\n", err);
 560
 561                 GOTO(out, err);
 562         }
 563
 564         case IOC_REQUEST_OPEN: {
 565                 __u64 fh, ino;
 566                 copy_from_user(&ino, (__u64 *)arg, sizeof(ino));
 567                 CERROR("-- opening ino %llu\n", (unsigned long long)ino);
 568                 err = mdc_open(&cl, connection, ino, S_IFDIR, O_RDONLY, 4711,
 569                                &fh, &request);
 570                 copy_to_user((__u64 *)arg, &fh, sizeof(fh));
 571                 CERROR("-- done err %d (fh=%Lu)\n", err,
 572                        (unsigned long long)fh);
 573
 574                 GOTO(out, err);
 575         }
 576
 577         case IOC_REQUEST_CLOSE: {
 578                 CERROR("-- closing ino 2, filehandle %lu\n", arg);
 579                 err = mdc_close(&cl, connection, 2, S_IFDIR, arg, &request);
 580                 CERROR("-- done err %d\n", err);
 581
 582                 GOTO(out, err);
 583         }
 584
 585         default:
 586                 GOTO(out, err = -EINVAL);
 587         }
 588
 589  out:
 590         ptlrpc_free_req(request);
 591         ptlrpc_put_connection(connection);
 592         ptlrpc_cleanup_client(&cl);
 593
 594         RETURN(err);
 595 #endif
 596         return 0;
 597 }
 598
 599 static int mdc_setup(struct obd_device *obddev, obd_count len, void *buf)
 600 {
 601         struct obd_ioctl_data* data = buf;
 602         struct mdc_obd *mdc = &obddev->u.mdc;
 603         char server_uuid[37];
 604         int rc;
 605         ENTRY;
 606
 607         if (data->ioc_inllen1 < 1) {
 608                 CERROR("osc setup requires a TARGET UUID\n");
 609                 RETURN(-EINVAL);
 610         }
 611
 612         if (data->ioc_inllen1 > 37) {
 613                 CERROR("mdc UUID must be less than 38 characters\n");
 614                 RETURN(-EINVAL);
 615         }
 616
 617         if (data->ioc_inllen2 < 1) {
 618                 CERROR("mdc setup requires a SERVER UUID\n");
 619                RETURN(-EINVAL);
 620         }
 621
 622         if (data->ioc_inllen2 > 37) {
 623                 CERROR("mdc UUID must be less than 38 characters\n");
 624                 RETURN(-EINVAL);
 625         }
 626
 627         memcpy(mdc->mdc_target_uuid, data->ioc_inlbuf1, data->ioc_inllen1);
 628         memcpy(server_uuid, data->ioc_inlbuf2, MIN(data->ioc_inllen2,
 629                                                    sizeof(server_uuid)));
 630
 631         mdc->mdc_conn = ptlrpc_uuid_to_connection(server_uuid);
 632         if (!mdc->mdc_conn)
 633                 RETURN(-ENOENT);
 634
 635         OBD_ALLOC(mdc->mdc_client, sizeof(*mdc->mdc_client));
 636         if (mdc->mdc_client == NULL)
 637                 GOTO(out_conn, rc = -ENOMEM);
 638
 639         OBD_ALLOC(mdc->mdc_ldlm_client, sizeof(*mdc->mdc_ldlm_client));
 640         if (mdc->mdc_ldlm_client == NULL)
 641                 GOTO(out_client, rc = -ENOMEM);
 642
 643         ptlrpc_init_client(NULL, NULL, MDS_REQUEST_PORTAL, MDC_REPLY_PORTAL,
 644                            mdc->mdc_client);
 645         ptlrpc_init_client(NULL, NULL, LDLM_REQUEST_PORTAL, LDLM_REPLY_PORTAL,
 646                            mdc->mdc_ldlm_client);
 647         mdc->mdc_client->cli_name = "mdc";
 648         mdc->mdc_ldlm_client->cli_name = "ldlm";
 649         /* XXX get recovery hooked in here again */
 650         //ptlrpc_init_client(ptlrpc_connmgr, ll_recover,...
 651
 652         ptlrpc_init_client(ptlrpc_connmgr, NULL,
 653                            MDS_REQUEST_PORTAL, MDC_REPLY_PORTAL,
 654                            mdc->mdc_client);
 655
 656         MOD_INC_USE_COUNT;
 657         RETURN(0);
 658
 659  out_client:
 660         OBD_FREE(mdc->mdc_client, sizeof(*mdc->mdc_client));
 661  out_conn:
 662         ptlrpc_put_connection(mdc->mdc_conn);
 663         return rc;
 664 }
 665
 666 static int mdc_cleanup(struct obd_device * obddev)
 667 {
 668         struct mdc_obd *mdc = &obddev->u.mdc;
 669
 670         ptlrpc_cleanup_client(mdc->mdc_client);
 671         OBD_FREE(mdc->mdc_client, sizeof(*mdc->mdc_client));
 672         ptlrpc_cleanup_client(mdc->mdc_ldlm_client);
 673         OBD_FREE(mdc->mdc_ldlm_client, sizeof(*mdc->mdc_ldlm_client));
 674         ptlrpc_put_connection(mdc->mdc_conn);
 675
 676         MOD_DEC_USE_COUNT;
 677         return 0;
 678 }
 679
 680 static int mdc_connect(struct obd_conn *conn)
 681 {
 682         struct mdc_obd *mdc = mdc_conn2mdc(conn);
 683         struct ptlrpc_request *request;
 684         int rc, size = sizeof(mdc->mdc_target_uuid);
 685         char *tmp = mdc->mdc_target_uuid;
 686
 687         ENTRY;
 688
 689         conn->oc_dev->obd_namespace = ldlm_namespace_new(LDLM_NAMESPACE_CLIENT);
 690         if (conn->oc_dev->obd_namespace == NULL)
 691                 RETURN(-ENOMEM);
 692
 693         request = ptlrpc_prep_req(mdc->mdc_client, mdc->mdc_conn,
 694                                   MDS_CONNECT, 1, &size, &tmp);
 695         if (!request)
 696                 RETURN(-ENOMEM);
 697
 698         request->rq_replen = lustre_msg_size(0, NULL);
 699
 700         rc = ptlrpc_queue_wait(request);
 701         if (rc)
 702                 GOTO(out, rc);
 703
 704         mdc->mdc_client->cli_target_devno = request->rq_repmsg->target_id;
 705         mdc->mdc_ldlm_client->cli_target_devno =
 706                 mdc->mdc_client->cli_target_devno;
 707         EXIT;
 708  out:
 709         ptlrpc_free_req(request);
 710         return rc;
 711 }
 712
 713 static int mdc_disconnect(struct obd_conn *conn)
 714 {
 715         struct mdc_obd *mdc = mdc_conn2mdc(conn);
 716         struct ptlrpc_request *request;
 717         struct mds_body *body;
 718         int rc, size = sizeof(*body);
 719         ENTRY;
 720
 721         ldlm_namespace_free(conn->oc_dev->obd_namespace);
 722         request = ptlrpc_prep_req(mdc->mdc_client, mdc->mdc_conn,
 723                                   MDS_DISCONNECT, 1, &size,
 724                                   NULL);
 725         if (!request)
 726                 RETURN(-ENOMEM);
 727
 728         body = lustre_msg_buf(request->rq_reqmsg, 0);
 729         body->valid = conn->oc_id;
 730
 731         request->rq_replen = lustre_msg_size(0, NULL);
 732
 733         rc = ptlrpc_queue_wait(request);
 734         GOTO(out, rc);
 735  out:
 736         ptlrpc_free_req(request);
 737         return rc;
 738 }
 739
 740 struct obd_ops mdc_obd_ops = {
 741         o_setup:   mdc_setup,
 742         o_cleanup: mdc_cleanup,
 743         o_connect: mdc_connect,
 744         o_disconnect: mdc_disconnect,
 745         o_iocontrol: mdc_ioctl
 746 };
 747
 748 static int __init ptlrpc_request_init(void)
 749 {
 750         return obd_register_type(&mdc_obd_ops, LUSTRE_MDC_NAME);
 751 }
 752
 753 static void __exit ptlrpc_request_exit(void)
 754 {
 755         obd_unregister_type(LUSTRE_MDC_NAME);
 756 }
 757
 758 MODULE_AUTHOR("Cluster File Systems <info@clusterfs.com>");
 759 MODULE_DESCRIPTION("Lustre Metadata Client v1.0");
 760 MODULE_LICENSE("GPL");
 761
 762 EXPORT_SYMBOL(mdc_getstatus);
 763 EXPORT_SYMBOL(mdc_enqueue);
 764 EXPORT_SYMBOL(mdc_getattr);
 765 EXPORT_SYMBOL(mdc_create);
 766 EXPORT_SYMBOL(mdc_unlink);
 767 EXPORT_SYMBOL(mdc_rename);
 768 EXPORT_SYMBOL(mdc_link);
 769 EXPORT_SYMBOL(mdc_readpage);
 770 EXPORT_SYMBOL(mdc_setattr);
 771 EXPORT_SYMBOL(mdc_close);
 772 EXPORT_SYMBOL(mdc_open);
 773
 774 module_init(ptlrpc_request_init);
 775 module_exit(ptlrpc_request_exit);