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