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                              struct ptlrpc_request **req)
 130 {
 131         int rc;
 132         struct inode *inode = data;
 133         ENTRY;
 134
 135         if (new == NULL) {
 136                 /* Completion AST.  Do nothing. */
 137                 RETURN(0);
 138         }
 139
 140         if (data_len != sizeof(*inode)) {
 141                 CERROR("data_len should be %d, but is %d\n", sizeof(*inode),
 142                        data_len);
 143                 LBUG();
 144         }
 145
 146         /* FIXME: do something better than throwing away everything */
 147         if (inode == NULL)
 148                 LBUG();
 149         if (S_ISDIR(inode->i_mode)) {
 150                 CDEBUG(D_INODE, "invalidating inode %ld\n", inode->i_ino);
 151                 invalidate_inode_pages(inode);
 152         }
 153
 154         rc = ldlm_cli_cancel(lock->l_client, lock);
 155         if (rc < 0) {
 156                 CERROR("ldlm_cli_cancel: %d\n", rc);
 157                 LBUG();
 158         }
 159         RETURN(0);
 160 }
 161
 162 int mdc_enqueue(struct obd_conn *conn, int lock_type, struct lookup_intent *it,
 163                 int lock_mode, struct inode *dir, struct dentry *de,
 164                 struct lustre_handle *lockh, __u64 id, char *tgt, int tgtlen,
 165                 void *data, int datalen)
 166 {
 167         struct ptlrpc_request *req;
 168         struct obd_device *obddev = conn->oc_dev;
 169         struct mdc_obd *mdc = mdc_conn2mdc(conn);
 170         __u64 res_id[RES_NAME_SIZE] = {dir->i_ino};
 171         int size[5] = {sizeof(struct ldlm_request), sizeof(struct ldlm_intent)};
 172         int rc, flags;
 173         struct ldlm_reply *dlm_rep;
 174         struct ldlm_intent *lit;
 175         ENTRY;
 176
 177 #warning FIXME: Andreas, the sgid directory stuff also goes here, but check again on mds
 178
 179         LDLM_DEBUG_NOLOCK("mdsintent %d dir %ld", it->it_op, dir->i_ino);
 180
 181         switch (it->it_op) {
 182         case IT_MKDIR:
 183                 it->it_mode = (it->it_mode | S_IFDIR) & ~current->fs->umask;
 184                 break;
 185         case IT_SETATTR:
 186                 it->it_op = IT_GETATTR;
 187                 break;
 188         case (IT_CREAT|IT_OPEN):
 189         case IT_CREAT:
 190         case IT_MKNOD:
 191                 it->it_mode = (it->it_mode | S_IFREG) & ~current->fs->umask;
 192                 break;
 193         case IT_SYMLINK:
 194                 it->it_mode = (it->it_mode | S_IFLNK) & ~current->fs->umask;
 195                 break;
 196         }
 197
 198         if (it->it_op & (IT_MKDIR | IT_CREAT | IT_SYMLINK | IT_MKNOD)) {
 199                 size[2] = sizeof(struct mds_rec_create);
 200                 size[3] = de->d_name.len + 1;
 201                 size[4] = tgtlen + 1;
 202                 req = ptlrpc_prep_req(mdc->mdc_ldlm_client, mdc->mdc_conn,
 203                                       LDLM_ENQUEUE, 5, size, NULL);
 204                 if (!req)
 205                         RETURN(-ENOMEM);
 206
 207                 /* pack the intent */
 208                 lit = lustre_msg_buf(req->rq_reqmsg, 1);
 209                 lit->opc = NTOH__u64((__u64)it->it_op);
 210
 211                 /* pack the intended request */
 212                 mds_create_pack(req, 2, dir, it->it_mode, id, current->fsuid,
 213                                 current->fsgid, CURRENT_TIME, de->d_name.name,
 214                                 de->d_name.len, tgt, tgtlen);
 215
 216                 size[0] = sizeof(struct ldlm_reply);
 217                 size[1] = sizeof(struct mds_body);
 218                 size[2] = sizeof(struct obdo);
 219                 req->rq_replen = lustre_msg_size(3, size);
 220         } else if ( it->it_op == IT_RENAME2 ) {
 221                 struct dentry *old_de = it->it_data;
 222
 223                 size[2] = sizeof(struct mds_rec_rename);
 224                 size[3] = old_de->d_name.len + 1;
 225                 size[4] = de->d_name.len + 1;
 226                 req = ptlrpc_prep_req(mdc->mdc_ldlm_client, mdc->mdc_conn,
 227                                       LDLM_ENQUEUE, 5, size, NULL);
 228                 if (!req)
 229                         RETURN(-ENOMEM);
 230
 231                 /* pack the intent */
 232                 lit = lustre_msg_buf(req->rq_reqmsg, 1);
 233                 lit->opc = NTOH__u64((__u64)it->it_op);
 234
 235                 /* pack the intended request */
 236                 mds_rename_pack(req, 2, old_de->d_inode, dir,
 237                                 old_de->d_parent->d_name.name,
 238                                 old_de->d_parent->d_name.len,
 239                                 de->d_name.name, de->d_name.len);
 240
 241                 size[0] = sizeof(struct ldlm_reply);
 242                 size[1] = sizeof(struct mds_body);
 243                 req->rq_replen = lustre_msg_size(2, size);
 244         } else if ( it->it_op == IT_UNLINK ) {
 245                 size[2] = sizeof(struct mds_rec_unlink);
 246                 size[3] = de->d_name.len + 1;
 247                 req = ptlrpc_prep_req(mdc->mdc_ldlm_client, mdc->mdc_conn,
 248                                       LDLM_ENQUEUE, 4, size, NULL);
 249                 if (!req)
 250                         RETURN(-ENOMEM);
 251
 252                 /* pack the intent */
 253                 lit = lustre_msg_buf(req->rq_reqmsg, 1);
 254                 lit->opc = NTOH__u64((__u64)it->it_op);
 255
 256                 /* pack the intended request */
 257                 mds_unlink_pack(req, 2, dir, NULL, de->d_name.name,
 258                                 de->d_name.len);
 259                 size[0] = sizeof(struct ldlm_reply);
 260                 size[1] = sizeof(struct obdo);
 261                 req->rq_replen = lustre_msg_size(2, size);
 262         } else if ( it->it_op == IT_GETATTR || it->it_op == IT_RENAME ||
 263                     it->it_op == IT_OPEN ) {
 264                 size[2] = sizeof(struct mds_body);
 265                 size[3] = de->d_name.len + 1;
 266
 267                 req = ptlrpc_prep_req(mdc->mdc_ldlm_client, mdc->mdc_conn,
 268                                       LDLM_ENQUEUE, 4, size, NULL);
 269                 if (!req)
 270                         RETURN(-ENOMEM);
 271
 272                 /* pack the intent */
 273                 lit = lustre_msg_buf(req->rq_reqmsg, 1);
 274                 lit->opc = NTOH__u64((__u64)it->it_op);
 275
 276                 /* pack the intended request */
 277                 mds_getattr_pack(req, 2, dir, de->d_name.name, de->d_name.len);
 278
 279                 /* get ready for the reply */
 280                 size[0] = sizeof(struct ldlm_reply);
 281                 size[1] = sizeof(struct mds_body);
 282                 size[2] = sizeof(struct obdo);
 283                 req->rq_replen = lustre_msg_size(3, size);
 284         } else if ( it->it_op == IT_SETATTR) {
 285                 size[2] = sizeof(struct mds_rec_setattr);
 286                 size[3] = de->d_name.len + 1;
 287                 req = ptlrpc_prep_req(mdc->mdc_ldlm_client, mdc->mdc_conn,
 288                                       LDLM_ENQUEUE, 5, size, NULL);
 289                 if (!req)
 290                         RETURN(-ENOMEM);
 291
 292                 lit = lustre_msg_buf(req->rq_reqmsg, 1);
 293                 lit->opc = NTOH__u64((__u64)it->it_op);
 294
 295                 if (!it->it_iattr)
 296                         LBUG();
 297
 298                 mds_setattr_pack(req, 2, dir, it->it_iattr,
 299                                 de->d_name.name, de->d_name.len);
 300                 size[0] = sizeof(struct ldlm_reply);
 301                 size[1] = sizeof(struct mds_body);
 302                 req->rq_replen = lustre_msg_size(2, size);
 303         } else if ( it->it_op == IT_READDIR ) {
 304                 req = ptlrpc_prep_req(mdc->mdc_ldlm_client, mdc->mdc_conn,
 305                                       LDLM_ENQUEUE, 1, size, NULL);
 306                 if (!req)
 307                         RETURN(-ENOMEM);
 308
 309                 /* get ready for the reply */
 310                 size[0] = sizeof(struct ldlm_reply);
 311                 req->rq_replen = lustre_msg_size(1, size);
 312         } else {
 313                 LBUG();
 314                 RETURN(-1);
 315         }
 316 #warning FIXME: the data here needs to be different if a lock was granted for a different inode
 317         rc = ldlm_cli_enqueue(mdc->mdc_ldlm_client, mdc->mdc_conn, req,
 318                               obddev->obd_namespace, NULL, res_id, lock_type,
 319                               NULL, 0, lock_mode, &flags,
 320                               (void *)mdc_lock_callback, data, datalen, lockh);
 321         if (rc == -ENOENT) {
 322                 lock_mode = 0;
 323                 memset(lockh, 0, sizeof(*lockh));
 324         } else if (rc != 0) {
 325                 CERROR("ldlm_cli_enqueue: %d\n", rc);
 326                 RETURN(rc);
 327         }
 328
 329         dlm_rep = lustre_msg_buf(req->rq_repmsg, 0);
 330         it->it_disposition = (int) dlm_rep->lock_policy_res1;
 331         it->it_status = (int) dlm_rep->lock_policy_res2;
 332         it->it_lock_mode = lock_mode;
 333         it->it_data = req;
 334
 335         RETURN(0);
 336 }
 337
 338 int mdc_open(struct obd_conn *conn, ino_t ino, int type, int flags,
 339              struct obdo *obdo,
 340              __u64 cookie, __u64 *fh, struct ptlrpc_request **request)
 341 {
 342         struct mdc_obd *mdc = mdc_conn2mdc(conn);
 343         struct mds_body *body;
 344         int rc, size[2] = {sizeof(*body)}, bufcount = 1;
 345         struct ptlrpc_request *req;
 346         ENTRY;
 347
 348         if (obdo != NULL) {
 349                 bufcount = 2;
 350                 size[1] = sizeof(*obdo);
 351         }
 352
 353         req = ptlrpc_prep_req(mdc->mdc_client, mdc->mdc_conn,
 354                               MDS_OPEN, bufcount, size, NULL);
 355         if (!req)
 356                 GOTO(out, rc = -ENOMEM);
 357
 358         req->rq_flags |= PTL_RPC_FL_REPLAY;
 359         req->rq_level = LUSTRE_CONN_FULL;
 360         body = lustre_msg_buf(req->rq_reqmsg, 0);
 361
 362         ll_ino2fid(&body->fid1, ino, 0, type);
 363         body->flags = HTON__u32(flags);
 364         body->extra = cookie;
 365
 366         if (obdo != NULL)
 367                 memcpy(lustre_msg_buf(req->rq_reqmsg, 1), obdo, sizeof(*obdo));
 368
 369         req->rq_replen = lustre_msg_size(1, size);
 370
 371         rc = ptlrpc_queue_wait(req);
 372         rc = ptlrpc_check_status(req, rc);
 373
 374         if (!rc) {
 375                 body = lustre_msg_buf(req->rq_repmsg, 0);
 376                 mds_unpack_body(body);
 377                 *fh = body->extra;
 378         }
 379
 380         EXIT;
 381  out:
 382         *request = req;
 383         return rc;
 384 }
 385
 386 int mdc_close(struct obd_conn *conn,
 387               ino_t ino, int type, __u64 fh, struct ptlrpc_request **request)
 388 {
 389         struct mdc_obd *mdc = mdc_conn2mdc(conn);
 390         struct mds_body *body;
 391         int rc, size = sizeof(*body);
 392         struct ptlrpc_request *req;
 393
 394         req = ptlrpc_prep_req(mdc->mdc_client, mdc->mdc_conn,
 395                               MDS_CLOSE, 1, &size, NULL);
 396         if (!req)
 397                 GOTO(out, rc = -ENOMEM);
 398
 399         body = lustre_msg_buf(req->rq_reqmsg, 0);
 400         ll_ino2fid(&body->fid1, ino, 0, type);
 401         body->extra = fh;
 402
 403         req->rq_level = LUSTRE_CONN_FULL;
 404         req->rq_replen = lustre_msg_size(0, NULL);
 405
 406         rc = ptlrpc_queue_wait(req);
 407         rc = ptlrpc_check_status(req, rc);
 408
 409         EXIT;
 410  out:
 411         *request = req;
 412         return rc;
 413 }
 414
 415 int mdc_readpage(struct obd_conn *conn, ino_t ino, int type, __u64 offset,
 416                  char *addr, struct ptlrpc_request **request)
 417 {
 418         struct mdc_obd *mdc = mdc_conn2mdc(conn);
 419         struct ptlrpc_request *req = NULL;
 420         struct ptlrpc_bulk_desc *desc = NULL;
 421         struct ptlrpc_bulk_page *bulk = NULL;
 422         struct mds_body *body;
 423         int rc, size = sizeof(*body);
 424         ENTRY;
 425
 426         CDEBUG(D_INODE, "inode: %ld\n", (long)ino);
 427
 428         desc = ptlrpc_prep_bulk(mdc->mdc_conn);
 429         if (desc == NULL)
 430                 GOTO(out, rc = -ENOMEM);
 431
 432         req = ptlrpc_prep_req(mdc->mdc_client, mdc->mdc_conn,
 433                               MDS_READPAGE, 1, &size, NULL);
 434         if (!req)
 435                 GOTO(out2, rc = -ENOMEM);
 436
 437         bulk = ptlrpc_prep_bulk_page(desc);
 438         bulk->b_buflen = PAGE_SIZE;
 439         bulk->b_buf = addr;
 440         bulk->b_xid = req->rq_xid;
 441         desc->b_portal = MDS_BULK_PORTAL;
 442
 443         rc = ptlrpc_register_bulk(desc);
 444         if (rc) {
 445                 CERROR("couldn't setup bulk sink: error %d.\n", rc);
 446                 GOTO(out2, rc);
 447         }
 448
 449         body = lustre_msg_buf(req->rq_reqmsg, 0);
 450         body->fid1.id = ino;
 451         body->fid1.f_type = type;
 452         body->size = offset;
 453
 454         req->rq_replen = lustre_msg_size(1, &size);
 455         req->rq_level = LUSTRE_CONN_FULL;
 456         rc = ptlrpc_queue_wait(req);
 457         rc = ptlrpc_check_status(req, rc);
 458         if (rc) {
 459                 ptlrpc_abort_bulk(desc);
 460                 GOTO(out2, rc);
 461         } else {
 462                 body = lustre_msg_buf(req->rq_repmsg, 0);
 463                 mds_unpack_body(body);
 464         }
 465
 466         EXIT;
 467  out2:
 468         ptlrpc_free_bulk(desc);
 469  out:
 470         *request = req;
 471         return rc;
 472 }
 473
 474 #if 0
 475 int mdc_statfs(struct ptlrpc_client *cl, struct ptlrpc_connection *conn,
 476                struct statfs *statfs,
 477                struct ptlrpc_request **request)
 478 {
 479         struct mds_rec_setattr *rec;
 480         struct ptlrpc_request *req;
 481         int rc, size = sizeof(*rec);
 482         ENTRY;
 483
 484         req = ptlrpc_prep_req(cl, conn, MDS_STATFS, 1, &size, NULL);
 485         if (!req)
 486                 RETURN(-ENOMEM);
 487
 488         rec = lustre_msg_buf(req->rq_reqmsg, 0);
 489         mds_setattr_pack(rec, inode, iattr);
 490
 491         size = sizeof(struct mds_body);
 492         req->rq_replen = lustre_msg_size(1, &size);
 493
 494         rc = mdc_reint(cl, req, LUSTRE_CONN_FULL);
 495         *request = req;
 496         if (rc == -ERESTARTSYS )
 497                 rc = 0;
 498
 499         RETURN(rc);
 500 }
 501 #endif
 502
 503 static int mdc_ioctl(long cmd, struct obd_conn *conn, int len, void *karg,
 504                      void *uarg)
 505 {
 506 #if 0
 507         /* FIXME XXX : This should use the new ioc_data to pass args in */
 508         int err = 0;
 509         struct ptlrpc_client cl;
 510         struct ptlrpc_connection *conn;
 511         struct ptlrpc_request *request;
 512
 513         ENTRY;
 514
 515         if (_IOC_TYPE(cmd) != IOC_REQUEST_TYPE ||
 516             _IOC_NR(cmd) < IOC_REQUEST_MIN_NR  ||
 517             _IOC_NR(cmd) > IOC_REQUEST_MAX_NR ) {
 518                 CDEBUG(D_IOCTL, "invalid ioctl ( type %d, nr %d, size %d )\n",
 519                        _IOC_TYPE(cmd), _IOC_NR(cmd), _IOC_SIZE(cmd));
 520                 RETURN(-EINVAL);
 521         }
 522
 523         ptlrpc_init_client(NULL, NULL,
 524                            MDS_REQUEST_PORTAL, MDC_REPLY_PORTAL, &cl);
 525         connection = ptlrpc_uuid_to_connection("mds");
 526         if (!connection) {
 527                 CERROR("cannot create client\n");
 528                 RETURN(-EINVAL);
 529         }
 530
 531         switch (cmd) {
 532         case IOC_REQUEST_GETATTR: {
 533                 CERROR("-- getting attr for ino %lu\n", arg);
 534                 err = mdc_getattr(&cl, connection, arg, S_IFDIR, ~0, 0,
 535                                   &request);
 536                 CERROR("-- done err %d\n", err);
 537
 538                 GOTO(out, err);
 539         }
 540
 541         case IOC_REQUEST_READPAGE: {
 542                 char *buf;
 543                 OBD_ALLOC(buf, PAGE_SIZE);
 544                 if (!buf) {
 545                         err = -ENOMEM;
 546                         GOTO(out, err);
 547                 }
 548                 CERROR("-- readpage 0 for ino %lu\n", arg);
 549                 err = mdc_readpage(&cl, connection, arg, S_IFDIR, 0, buf,
 550                                    &request);
 551                 CERROR("-- done err %d\n", err);
 552                 OBD_FREE(buf, PAGE_SIZE);
 553
 554                 GOTO(out, err);
 555         }
 556
 557         case IOC_REQUEST_SETATTR: {
 558                 struct inode inode;
 559                 struct iattr iattr;
 560
 561                 inode.i_ino = arg;
 562                 inode.i_generation = 0;
 563                 iattr.ia_mode = 040777;
 564                 iattr.ia_atime = 0;
 565                 iattr.ia_valid = ATTR_MODE | ATTR_ATIME;
 566
 567                 err = mdc_setattr(&cl, connection, &inode, &iattr, &request);
 568                 CERROR("-- done err %d\n", err);
 569
 570                 GOTO(out, err);
 571         }
 572
 573         case IOC_REQUEST_CREATE: {
 574                 struct inode inode;
 575                 struct iattr iattr;
 576
 577                 inode.i_ino = arg;
 578                 inode.i_generation = 0;
 579                 iattr.ia_mode = 040777;
 580                 iattr.ia_atime = 0;
 581                 iattr.ia_valid = ATTR_MODE | ATTR_ATIME;
 582
 583                 err = mdc_create(&cl, connection, &inode,
 584                                  "foofile", strlen("foofile"),
 585                                  NULL, 0, 0100707, 47114711,
 586                                  11, 47, 0, NULL, &request);
 587                 CERROR("-- done err %d\n", err);
 588
 589                 GOTO(out, err);
 590         }
 591
 592         case IOC_REQUEST_OPEN: {
 593                 __u64 fh, ino;
 594                 copy_from_user(&ino, (__u64 *)arg, sizeof(ino));
 595                 CERROR("-- opening ino %llu\n", (unsigned long long)ino);
 596                 err = mdc_open(&cl, connection, ino, S_IFDIR, O_RDONLY, 4711,
 597                                &fh, &request);
 598                 copy_to_user((__u64 *)arg, &fh, sizeof(fh));
 599                 CERROR("-- done err %d (fh=%Lu)\n", err,
 600                        (unsigned long long)fh);
 601
 602                 GOTO(out, err);
 603         }
 604
 605         case IOC_REQUEST_CLOSE: {
 606                 CERROR("-- closing ino 2, filehandle %lu\n", arg);
 607                 err = mdc_close(&cl, connection, 2, S_IFDIR, arg, &request);
 608                 CERROR("-- done err %d\n", err);
 609
 610                 GOTO(out, err);
 611         }
 612
 613         default:
 614                 GOTO(out, err = -EINVAL);
 615         }
 616
 617  out:
 618         ptlrpc_free_req(request);
 619         ptlrpc_put_connection(connection);
 620         ptlrpc_cleanup_client(&cl);
 621
 622         RETURN(err);
 623 #endif
 624         return 0;
 625 }
 626
 627 static int mdc_setup(struct obd_device *obddev, obd_count len, void *buf)
 628 {
 629         struct obd_ioctl_data* data = buf;
 630         struct mdc_obd *mdc = &obddev->u.mdc;
 631         char server_uuid[37];
 632         int rc;
 633         ENTRY;
 634
 635         if (data->ioc_inllen1 < 1) {
 636                 CERROR("osc setup requires a TARGET UUID\n");
 637                 RETURN(-EINVAL);
 638         }
 639
 640         if (data->ioc_inllen1 > 37) {
 641                 CERROR("mdc UUID must be less than 38 characters\n");
 642                 RETURN(-EINVAL);
 643         }
 644
 645         if (data->ioc_inllen2 < 1) {
 646                 CERROR("mdc setup requires a SERVER UUID\n");
 647                RETURN(-EINVAL);
 648         }
 649
 650         if (data->ioc_inllen2 > 37) {
 651                 CERROR("mdc UUID must be less than 38 characters\n");
 652                 RETURN(-EINVAL);
 653         }
 654
 655         memcpy(mdc->mdc_target_uuid, data->ioc_inlbuf1, data->ioc_inllen1);
 656         memcpy(server_uuid, data->ioc_inlbuf2, MIN(data->ioc_inllen2,
 657                                                    sizeof(server_uuid)));
 658
 659         mdc->mdc_conn = ptlrpc_uuid_to_connection(server_uuid);
 660         if (!mdc->mdc_conn)
 661                 RETURN(-ENOENT);
 662
 663         OBD_ALLOC(mdc->mdc_client, sizeof(*mdc->mdc_client));
 664         if (mdc->mdc_client == NULL)
 665                 GOTO(out_conn, rc = -ENOMEM);
 666
 667         OBD_ALLOC(mdc->mdc_ldlm_client, sizeof(*mdc->mdc_ldlm_client));
 668         if (mdc->mdc_ldlm_client == NULL)
 669                 GOTO(out_client, rc = -ENOMEM);
 670
 671         ptlrpc_init_client(NULL, NULL, MDS_REQUEST_PORTAL, MDC_REPLY_PORTAL,
 672                            mdc->mdc_client);
 673         ptlrpc_init_client(NULL, NULL, LDLM_REQUEST_PORTAL, LDLM_REPLY_PORTAL,
 674                            mdc->mdc_ldlm_client);
 675         mdc->mdc_client->cli_name = "mdc";
 676         mdc->mdc_ldlm_client->cli_name = "ldlm";
 677         /* XXX get recovery hooked in here again */
 678         //ptlrpc_init_client(ptlrpc_connmgr, ll_recover,...
 679
 680         ptlrpc_init_client(ptlrpc_connmgr, NULL,
 681                            MDS_REQUEST_PORTAL, MDC_REPLY_PORTAL,
 682                            mdc->mdc_client);
 683
 684         MOD_INC_USE_COUNT;
 685         RETURN(0);
 686
 687  out_client:
 688         OBD_FREE(mdc->mdc_client, sizeof(*mdc->mdc_client));
 689  out_conn:
 690         ptlrpc_put_connection(mdc->mdc_conn);
 691         return rc;
 692 }
 693
 694 static int mdc_cleanup(struct obd_device * obddev)
 695 {
 696         struct mdc_obd *mdc = &obddev->u.mdc;
 697
 698         ptlrpc_cleanup_client(mdc->mdc_client);
 699         OBD_FREE(mdc->mdc_client, sizeof(*mdc->mdc_client));
 700         ptlrpc_cleanup_client(mdc->mdc_ldlm_client);
 701         OBD_FREE(mdc->mdc_ldlm_client, sizeof(*mdc->mdc_ldlm_client));
 702         ptlrpc_put_connection(mdc->mdc_conn);
 703
 704         MOD_DEC_USE_COUNT;
 705         return 0;
 706 }
 707
 708 static int mdc_connect(struct obd_conn *conn)
 709 {
 710         struct mdc_obd *mdc = mdc_conn2mdc(conn);
 711         struct ptlrpc_request *request;
 712         int rc, size = sizeof(mdc->mdc_target_uuid);
 713         char *tmp = mdc->mdc_target_uuid;
 714
 715         ENTRY;
 716
 717         conn->oc_dev->obd_namespace =
 718                 ldlm_namespace_new("mdc", LDLM_NAMESPACE_CLIENT);
 719         if (conn->oc_dev->obd_namespace == NULL)
 720                 RETURN(-ENOMEM);
 721
 722         request = ptlrpc_prep_req(mdc->mdc_client, mdc->mdc_conn,
 723                                   MDS_CONNECT, 1, &size, &tmp);
 724         if (!request)
 725                 RETURN(-ENOMEM);
 726
 727         request->rq_replen = lustre_msg_size(0, NULL);
 728
 729         rc = ptlrpc_queue_wait(request);
 730         if (rc)
 731                 GOTO(out, rc);
 732
 733         mdc->mdc_client->cli_target_devno = request->rq_repmsg->target_id;
 734         mdc->mdc_ldlm_client->cli_target_devno =
 735                 mdc->mdc_client->cli_target_devno;
 736         EXIT;
 737  out:
 738         ptlrpc_free_req(request);
 739         return rc;
 740 }
 741
 742 static int mdc_disconnect(struct obd_conn *conn)
 743 {
 744         struct mdc_obd *mdc = mdc_conn2mdc(conn);
 745         struct ptlrpc_request *request;
 746         struct mds_body *body;
 747         int rc, size = sizeof(*body);
 748         ENTRY;
 749
 750         ldlm_namespace_free(conn->oc_dev->obd_namespace);
 751         request = ptlrpc_prep_req(mdc->mdc_client, mdc->mdc_conn,
 752                                   MDS_DISCONNECT, 1, &size,
 753                                   NULL);
 754         if (!request)
 755                 RETURN(-ENOMEM);
 756
 757         body = lustre_msg_buf(request->rq_reqmsg, 0);
 758         body->valid = conn->oc_id;
 759
 760         request->rq_replen = lustre_msg_size(0, NULL);
 761
 762         rc = ptlrpc_queue_wait(request);
 763         GOTO(out, rc);
 764  out:
 765         ptlrpc_free_req(request);
 766         return rc;
 767 }
 768
 769 struct obd_ops mdc_obd_ops = {
 770         o_setup:   mdc_setup,
 771         o_cleanup: mdc_cleanup,
 772         o_connect: mdc_connect,
 773         o_disconnect: mdc_disconnect,
 774         o_iocontrol: mdc_ioctl
 775 };
 776
 777 static int __init ptlrpc_request_init(void)
 778 {
 779         return obd_register_type(&mdc_obd_ops, LUSTRE_MDC_NAME);
 780 }
 781
 782 static void __exit ptlrpc_request_exit(void)
 783 {
 784         obd_unregister_type(LUSTRE_MDC_NAME);
 785 }
 786
 787 MODULE_AUTHOR("Cluster File Systems <info@clusterfs.com>");
 788 MODULE_DESCRIPTION("Lustre Metadata Client v1.0");
 789 MODULE_LICENSE("GPL");
 790
 791 EXPORT_SYMBOL(mdc_getstatus);
 792 EXPORT_SYMBOL(mdc_enqueue);
 793 EXPORT_SYMBOL(mdc_getattr);
 794 EXPORT_SYMBOL(mdc_create);
 795 EXPORT_SYMBOL(mdc_unlink);
 796 EXPORT_SYMBOL(mdc_rename);
 797 EXPORT_SYMBOL(mdc_link);
 798 EXPORT_SYMBOL(mdc_readpage);
 799 EXPORT_SYMBOL(mdc_setattr);
 800 EXPORT_SYMBOL(mdc_close);
 801 EXPORT_SYMBOL(mdc_open);
 802
 803 module_init(ptlrpc_request_init);
 804 module_exit(ptlrpc_request_exit);