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_RMDIR ) {
 263                 size[2] = sizeof(struct mds_rec_unlink);
 264                 size[3] = de->d_name.len + 1;
 265                 req = ptlrpc_prep_req(mdc->mdc_ldlm_client, mdc->mdc_conn,
 266                                       LDLM_ENQUEUE, 4, size, NULL);
 267                 if (!req)
 268                         RETURN(-ENOMEM);
 269
 270                 /* pack the intent */
 271                 lit = lustre_msg_buf(req->rq_reqmsg, 1);
 272                 lit->opc = NTOH__u64((__u64)it->it_op);
 273
 274                 /* pack the intended request */
 275                 mds_unlink_pack(req, 2, dir, NULL, de->d_name.name,
 276                                 de->d_name.len);
 277                 size[0] = sizeof(struct ldlm_reply);
 278                 req->rq_replen = lustre_msg_size(1, size);
 279         } else if ( it->it_op == IT_GETATTR || it->it_op == IT_RENAME ||
 280                      it->it_op == IT_OPEN ) {
 281                 size[2] = sizeof(struct mds_body);
 282                 size[3] = de->d_name.len + 1;
 283
 284                 req = ptlrpc_prep_req(mdc->mdc_ldlm_client, mdc->mdc_conn,
 285                                       LDLM_ENQUEUE, 4, size, NULL);
 286                 if (!req)
 287                         RETURN(-ENOMEM);
 288
 289                 /* pack the intent */
 290                 lit = lustre_msg_buf(req->rq_reqmsg, 1);
 291                 lit->opc = NTOH__u64((__u64)it->it_op);
 292
 293                 /* pack the intended request */
 294                 mds_getattr_pack(req, 2, dir, de->d_name.name, de->d_name.len);
 295
 296                 /* get ready for the reply */
 297                 size[0] = sizeof(struct ldlm_reply);
 298                 size[1] = sizeof(struct mds_body);
 299                 size[2] = sizeof(struct obdo);
 300                 req->rq_replen = lustre_msg_size(3, size);
 301         } else if ( it->it_op == IT_SETATTR) {
 302                 size[2] = sizeof(struct mds_rec_setattr);
 303                 size[3] = de->d_name.len + 1;
 304                 req = ptlrpc_prep_req(mdc->mdc_ldlm_client, mdc->mdc_conn,
 305                                       LDLM_ENQUEUE, 5, size, NULL);
 306                 if (!req)
 307                         RETURN(-ENOMEM);
 308
 309                 lit = lustre_msg_buf(req->rq_reqmsg, 1);
 310                 lit->opc = NTOH__u64((__u64)it->it_op);
 311
 312                 if (!it->it_iattr)
 313                         LBUG();
 314
 315                 mds_setattr_pack(req, 2, dir, it->it_iattr,
 316                                 de->d_name.name, de->d_name.len);
 317                 size[0] = sizeof(struct ldlm_reply);
 318                 size[1] = sizeof(struct mds_body);
 319                 req->rq_replen = lustre_msg_size(2, size);
 320         } else if ( it->it_op == IT_READDIR ) {
 321                 req = ptlrpc_prep_req(mdc->mdc_ldlm_client, mdc->mdc_conn,
 322                                       LDLM_ENQUEUE, 1, size, NULL);
 323                 if (!req)
 324                         RETURN(-ENOMEM);
 325
 326                 /* get ready for the reply */
 327                 size[0] = sizeof(struct ldlm_reply);
 328                 req->rq_replen = lustre_msg_size(1, size);
 329         } else {
 330                 LBUG();
 331                 RETURN(-1);
 332         }
 333 #warning FIXME: the data here needs to be different if a lock was granted for a different inode
 334         rc = ldlm_cli_enqueue(mdc->mdc_ldlm_client, mdc->mdc_conn, req,
 335                               obddev->obd_namespace, NULL, res_id, lock_type,
 336                               NULL, 0, lock_mode, &flags,
 337                               (void *)mdc_lock_callback, data, datalen, lockh);
 338         if (rc == -ENOENT) {
 339                 lock_mode = 0;
 340                 memset(lockh, 0, sizeof(*lockh));
 341         } else if (rc != 0) {
 342                 CERROR("ldlm_cli_enqueue: %d\n", rc);
 343                 RETURN(rc);
 344         }
 345
 346         dlm_rep = lustre_msg_buf(req->rq_repmsg, 0);
 347         it->it_disposition = (int) dlm_rep->lock_policy_res1;
 348         it->it_status = (int) dlm_rep->lock_policy_res2;
 349         it->it_lock_mode = lock_mode;
 350         it->it_data = req;
 351
 352         RETURN(0);
 353 }
 354
 355 int mdc_open(struct obd_conn *conn, ino_t ino, int type, int flags,
 356              struct obdo *obdo,
 357              __u64 cookie, __u64 *fh, struct ptlrpc_request **request)
 358 {
 359         struct mdc_obd *mdc = mdc_conn2mdc(conn);
 360         struct mds_body *body;
 361         int rc, size[2] = {sizeof(*body)}, bufcount = 1;
 362         struct ptlrpc_request *req;
 363         ENTRY;
 364
 365         if (obdo != NULL) {
 366                 bufcount = 2;
 367                 size[1] = sizeof(*obdo);
 368         }
 369
 370         req = ptlrpc_prep_req(mdc->mdc_client, mdc->mdc_conn,
 371                               MDS_OPEN, bufcount, size, NULL);
 372         if (!req)
 373                 GOTO(out, rc = -ENOMEM);
 374
 375         req->rq_flags |= PTL_RPC_FL_REPLAY;
 376         req->rq_level = LUSTRE_CONN_FULL;
 377         body = lustre_msg_buf(req->rq_reqmsg, 0);
 378
 379         ll_ino2fid(&body->fid1, ino, 0, type);
 380         body->flags = HTON__u32(flags);
 381         body->extra = cookie;
 382
 383         if (obdo != NULL)
 384                 memcpy(lustre_msg_buf(req->rq_reqmsg, 1), obdo, sizeof(*obdo));
 385
 386         req->rq_replen = lustre_msg_size(1, size);
 387
 388         rc = ptlrpc_queue_wait(req);
 389         rc = ptlrpc_check_status(req, rc);
 390
 391         if (!rc) {
 392                 body = lustre_msg_buf(req->rq_repmsg, 0);
 393                 mds_unpack_body(body);
 394                 *fh = body->extra;
 395         }
 396
 397         EXIT;
 398  out:
 399         *request = req;
 400         return rc;
 401 }
 402
 403 int mdc_close(struct obd_conn *conn,
 404               ino_t ino, int type, __u64 fh, struct ptlrpc_request **request)
 405 {
 406         struct mdc_obd *mdc = mdc_conn2mdc(conn);
 407         struct mds_body *body;
 408         int rc, size = sizeof(*body);
 409         struct ptlrpc_request *req;
 410
 411         req = ptlrpc_prep_req(mdc->mdc_client, mdc->mdc_conn,
 412                               MDS_CLOSE, 1, &size, NULL);
 413         if (!req)
 414                 GOTO(out, rc = -ENOMEM);
 415
 416         body = lustre_msg_buf(req->rq_reqmsg, 0);
 417         ll_ino2fid(&body->fid1, ino, 0, type);
 418         body->extra = fh;
 419
 420         req->rq_level = LUSTRE_CONN_FULL;
 421         req->rq_replen = lustre_msg_size(0, NULL);
 422
 423         rc = ptlrpc_queue_wait(req);
 424         rc = ptlrpc_check_status(req, rc);
 425
 426         EXIT;
 427  out:
 428         *request = req;
 429         return rc;
 430 }
 431
 432 int mdc_readpage(struct obd_conn *conn, ino_t ino, int type, __u64 offset,
 433                  char *addr, struct ptlrpc_request **request)
 434 {
 435         struct mdc_obd *mdc = mdc_conn2mdc(conn);
 436         struct ptlrpc_request *req = NULL;
 437         struct ptlrpc_bulk_desc *desc = NULL;
 438         struct ptlrpc_bulk_page *bulk = NULL;
 439         struct mds_body *body;
 440         int rc, size = sizeof(*body);
 441         ENTRY;
 442
 443         CDEBUG(D_INODE, "inode: %ld\n", (long)ino);
 444
 445         desc = ptlrpc_prep_bulk(mdc->mdc_conn);
 446         if (desc == NULL)
 447                 GOTO(out, rc = -ENOMEM);
 448
 449         req = ptlrpc_prep_req(mdc->mdc_client, mdc->mdc_conn,
 450                               MDS_READPAGE, 1, &size, NULL);
 451         if (!req)
 452                 GOTO(out2, rc = -ENOMEM);
 453
 454         bulk = ptlrpc_prep_bulk_page(desc);
 455         bulk->b_buflen = PAGE_SIZE;
 456         bulk->b_buf = addr;
 457         bulk->b_xid = req->rq_xid;
 458         desc->b_portal = MDS_BULK_PORTAL;
 459
 460         rc = ptlrpc_register_bulk(desc);
 461         if (rc) {
 462                 CERROR("couldn't setup bulk sink: error %d.\n", rc);
 463                 GOTO(out2, rc);
 464         }
 465
 466         body = lustre_msg_buf(req->rq_reqmsg, 0);
 467         body->fid1.id = ino;
 468         body->fid1.f_type = type;
 469         body->size = offset;
 470
 471         req->rq_replen = lustre_msg_size(1, &size);
 472         req->rq_level = LUSTRE_CONN_FULL;
 473         rc = ptlrpc_queue_wait(req);
 474         rc = ptlrpc_check_status(req, rc);
 475         if (rc) {
 476                 ptlrpc_abort_bulk(desc);
 477                 GOTO(out2, rc);
 478         } else {
 479                 body = lustre_msg_buf(req->rq_repmsg, 0);
 480                 mds_unpack_body(body);
 481         }
 482
 483         EXIT;
 484  out2:
 485         ptlrpc_free_bulk(desc);
 486  out:
 487         *request = req;
 488         return rc;
 489 }
 490
 491 int mdc_statfs(struct obd_conn *conn, struct statfs *sfs,
 492                struct ptlrpc_request **request)
 493 {
 494         struct mdc_obd *mdc = mdc_conn2mdc(conn);
 495         struct obd_statfs *osfs;
 496         struct ptlrpc_request *req;
 497         int rc, size = sizeof(*osfs);
 498         ENTRY;
 499
 500         req = ptlrpc_prep_req(mdc->mdc_client, mdc->mdc_conn, MDS_STATFS,
 501                               0, NULL, NULL);
 502         if (!req)
 503                 GOTO(out, rc = -ENOMEM);
 504         req->rq_replen = lustre_msg_size(1, &size);
 505         req->rq_level = LUSTRE_CONN_FULL;
 506
 507         rc = ptlrpc_queue_wait(req);
 508         rc = ptlrpc_check_status(req, rc);
 509
 510         if (rc)
 511                 GOTO(out, rc);
 512
 513         osfs = lustre_msg_buf(req->rq_repmsg, 0);
 514         obd_statfs_unpack(osfs, sfs);
 515
 516         EXIT;
 517 out:
 518         *request = req;
 519
 520         return rc;
 521 }
 522
 523 static int mdc_ioctl(long cmd, struct obd_conn *conn, int len, void *karg,
 524                      void *uarg)
 525 {
 526 #if 0
 527         /* FIXME XXX : This should use the new ioc_data to pass args in */
 528         int err = 0;
 529         struct ptlrpc_client cl;
 530         struct ptlrpc_connection *conn;
 531         struct ptlrpc_request *request;
 532
 533         ENTRY;
 534
 535         if (_IOC_TYPE(cmd) != IOC_REQUEST_TYPE ||
 536             _IOC_NR(cmd) < IOC_REQUEST_MIN_NR  ||
 537             _IOC_NR(cmd) > IOC_REQUEST_MAX_NR ) {
 538                 CDEBUG(D_IOCTL, "invalid ioctl ( type %d, nr %d, size %d )\n",
 539                        _IOC_TYPE(cmd), _IOC_NR(cmd), _IOC_SIZE(cmd));
 540                 RETURN(-EINVAL);
 541         }
 542
 543         ptlrpc_init_client(NULL, NULL,
 544                            MDS_REQUEST_PORTAL, MDC_REPLY_PORTAL, &cl);
 545         connection = ptlrpc_uuid_to_connection("mds");
 546         if (!connection) {
 547                 CERROR("cannot create client\n");
 548                 RETURN(-EINVAL);
 549         }
 550
 551         switch (cmd) {
 552         case IOC_REQUEST_GETATTR: {
 553                 CERROR("-- getting attr for ino %lu\n", arg);
 554                 err = mdc_getattr(&cl, connection, arg, S_IFDIR, ~0, 0,
 555                                   &request);
 556                 CERROR("-- done err %d\n", err);
 557
 558                 GOTO(out, err);
 559         }
 560
 561         case IOC_REQUEST_READPAGE: {
 562                 char *buf;
 563                 OBD_ALLOC(buf, PAGE_SIZE);
 564                 if (!buf) {
 565                         err = -ENOMEM;
 566                         GOTO(out, err);
 567                 }
 568                 CERROR("-- readpage 0 for ino %lu\n", arg);
 569                 err = mdc_readpage(&cl, connection, arg, S_IFDIR, 0, buf,
 570                                    &request);
 571                 CERROR("-- done err %d\n", err);
 572                 OBD_FREE(buf, PAGE_SIZE);
 573
 574                 GOTO(out, err);
 575         }
 576
 577         case IOC_REQUEST_SETATTR: {
 578                 struct inode inode;
 579                 struct iattr iattr;
 580
 581                 inode.i_ino = arg;
 582                 inode.i_generation = 0;
 583                 iattr.ia_mode = 040777;
 584                 iattr.ia_atime = 0;
 585                 iattr.ia_valid = ATTR_MODE | ATTR_ATIME;
 586
 587                 err = mdc_setattr(&cl, connection, &inode, &iattr, &request);
 588                 CERROR("-- done err %d\n", err);
 589
 590                 GOTO(out, err);
 591         }
 592
 593         case IOC_REQUEST_CREATE: {
 594                 struct inode inode;
 595                 struct iattr iattr;
 596
 597                 inode.i_ino = arg;
 598                 inode.i_generation = 0;
 599                 iattr.ia_mode = 040777;
 600                 iattr.ia_atime = 0;
 601                 iattr.ia_valid = ATTR_MODE | ATTR_ATIME;
 602
 603                 err = mdc_create(&cl, connection, &inode,
 604                                  "foofile", strlen("foofile"),
 605                                  NULL, 0, 0100707, 47114711,
 606                                  11, 47, 0, NULL, &request);
 607                 CERROR("-- done err %d\n", err);
 608
 609                 GOTO(out, err);
 610         }
 611
 612         case IOC_REQUEST_OPEN: {
 613                 __u64 fh, ino;
 614                 copy_from_user(&ino, (__u64 *)arg, sizeof(ino));
 615                 CERROR("-- opening ino %llu\n", (unsigned long long)ino);
 616                 err = mdc_open(&cl, connection, ino, S_IFDIR, O_RDONLY, 4711,
 617                                &fh, &request);
 618                 copy_to_user((__u64 *)arg, &fh, sizeof(fh));
 619                 CERROR("-- done err %d (fh=%Lu)\n", err,
 620                        (unsigned long long)fh);
 621
 622                 GOTO(out, err);
 623         }
 624
 625         case IOC_REQUEST_CLOSE: {
 626                 CERROR("-- closing ino 2, filehandle %lu\n", arg);
 627                 err = mdc_close(&cl, connection, 2, S_IFDIR, arg, &request);
 628                 CERROR("-- done err %d\n", err);
 629
 630                 GOTO(out, err);
 631         }
 632
 633         default:
 634                 GOTO(out, err = -EINVAL);
 635         }
 636
 637  out:
 638         ptlrpc_free_req(request);
 639         ptlrpc_put_connection(connection);
 640         ptlrpc_cleanup_client(&cl);
 641
 642         RETURN(err);
 643 #endif
 644         return 0;
 645 }
 646
 647 static int mdc_setup(struct obd_device *obddev, obd_count len, void *buf)
 648 {
 649         struct obd_ioctl_data* data = buf;
 650         struct mdc_obd *mdc = &obddev->u.mdc;
 651         char server_uuid[37];
 652         int rc;
 653         ENTRY;
 654
 655         if (data->ioc_inllen1 < 1) {
 656                 CERROR("osc setup requires a TARGET UUID\n");
 657                 RETURN(-EINVAL);
 658         }
 659
 660         if (data->ioc_inllen1 > 37) {
 661                 CERROR("mdc UUID must be less than 38 characters\n");
 662                 RETURN(-EINVAL);
 663         }
 664
 665         if (data->ioc_inllen2 < 1) {
 666                 CERROR("mdc setup requires a SERVER UUID\n");
 667                RETURN(-EINVAL);
 668         }
 669
 670         if (data->ioc_inllen2 > 37) {
 671                 CERROR("mdc UUID must be less than 38 characters\n");
 672                 RETURN(-EINVAL);
 673         }
 674
 675         memcpy(mdc->mdc_target_uuid, data->ioc_inlbuf1, data->ioc_inllen1);
 676         memcpy(server_uuid, data->ioc_inlbuf2, MIN(data->ioc_inllen2,
 677                                                    sizeof(server_uuid)));
 678
 679         mdc->mdc_conn = ptlrpc_uuid_to_connection(server_uuid);
 680         if (!mdc->mdc_conn)
 681                 RETURN(-ENOENT);
 682
 683         OBD_ALLOC(mdc->mdc_client, sizeof(*mdc->mdc_client));
 684         if (mdc->mdc_client == NULL)
 685                 GOTO(out_conn, rc = -ENOMEM);
 686
 687         OBD_ALLOC(mdc->mdc_ldlm_client, sizeof(*mdc->mdc_ldlm_client));
 688         if (mdc->mdc_ldlm_client == NULL)
 689                 GOTO(out_client, rc = -ENOMEM);
 690
 691         ptlrpc_init_client(NULL, NULL, MDS_REQUEST_PORTAL, MDC_REPLY_PORTAL,
 692                            mdc->mdc_client);
 693         ptlrpc_init_client(NULL, NULL, LDLM_REQUEST_PORTAL, LDLM_REPLY_PORTAL,
 694                            mdc->mdc_ldlm_client);
 695         mdc->mdc_client->cli_name = "mdc";
 696         mdc->mdc_ldlm_client->cli_name = "ldlm";
 697         /* XXX get recovery hooked in here again */
 698         //ptlrpc_init_client(ptlrpc_connmgr, ll_recover,...
 699
 700         ptlrpc_init_client(ptlrpc_connmgr, NULL,
 701                            MDS_REQUEST_PORTAL, MDC_REPLY_PORTAL,
 702                            mdc->mdc_client);
 703
 704         MOD_INC_USE_COUNT;
 705         RETURN(0);
 706
 707  out_client:
 708         OBD_FREE(mdc->mdc_client, sizeof(*mdc->mdc_client));
 709  out_conn:
 710         ptlrpc_put_connection(mdc->mdc_conn);
 711         return rc;
 712 }
 713
 714 static int mdc_cleanup(struct obd_device * obddev)
 715 {
 716         struct mdc_obd *mdc = &obddev->u.mdc;
 717
 718         ptlrpc_cleanup_client(mdc->mdc_client);
 719         OBD_FREE(mdc->mdc_client, sizeof(*mdc->mdc_client));
 720         ptlrpc_cleanup_client(mdc->mdc_ldlm_client);
 721         OBD_FREE(mdc->mdc_ldlm_client, sizeof(*mdc->mdc_ldlm_client));
 722         ptlrpc_put_connection(mdc->mdc_conn);
 723
 724         MOD_DEC_USE_COUNT;
 725         return 0;
 726 }
 727
 728 static int mdc_connect(struct obd_conn *conn)
 729 {
 730         struct mdc_obd *mdc = mdc_conn2mdc(conn);
 731         struct ptlrpc_request *request;
 732         int rc, size = sizeof(mdc->mdc_target_uuid);
 733         char *tmp = mdc->mdc_target_uuid;
 734
 735         ENTRY;
 736
 737         conn->oc_dev->obd_namespace =
 738                 ldlm_namespace_new("mdc", LDLM_NAMESPACE_CLIENT);
 739         if (conn->oc_dev->obd_namespace == NULL)
 740                 RETURN(-ENOMEM);
 741
 742         request = ptlrpc_prep_req(mdc->mdc_client, mdc->mdc_conn,
 743                                   MDS_CONNECT, 1, &size, &tmp);
 744         if (!request)
 745                 RETURN(-ENOMEM);
 746
 747         request->rq_replen = lustre_msg_size(0, NULL);
 748
 749         rc = ptlrpc_queue_wait(request);
 750         if (rc)
 751                 GOTO(out, rc);
 752
 753         mdc->mdc_client->cli_target_devno = request->rq_repmsg->target_id;
 754         mdc->mdc_ldlm_client->cli_target_devno =
 755                 mdc->mdc_client->cli_target_devno;
 756         EXIT;
 757  out:
 758         ptlrpc_free_req(request);
 759         return rc;
 760 }
 761
 762 static int mdc_disconnect(struct obd_conn *conn)
 763 {
 764         struct mdc_obd *mdc = mdc_conn2mdc(conn);
 765         struct ptlrpc_request *request;
 766         struct mds_body *body;
 767         int rc, size = sizeof(*body);
 768         ENTRY;
 769
 770         ldlm_namespace_free(conn->oc_dev->obd_namespace);
 771         request = ptlrpc_prep_req(mdc->mdc_client, mdc->mdc_conn,
 772                                   MDS_DISCONNECT, 1, &size,
 773                                   NULL);
 774         if (!request)
 775                 RETURN(-ENOMEM);
 776
 777         body = lustre_msg_buf(request->rq_reqmsg, 0);
 778         body->valid = conn->oc_id;
 779
 780         request->rq_replen = lustre_msg_size(0, NULL);
 781
 782         rc = ptlrpc_queue_wait(request);
 783         GOTO(out, rc);
 784  out:
 785         ptlrpc_free_req(request);
 786         return rc;
 787 }
 788
 789 struct obd_ops mdc_obd_ops = {
 790         o_setup:   mdc_setup,
 791         o_cleanup: mdc_cleanup,
 792         o_connect: mdc_connect,
 793         o_disconnect: mdc_disconnect,
 794         o_iocontrol: mdc_ioctl
 795 };
 796
 797 static int __init ptlrpc_request_init(void)
 798 {
 799         return obd_register_type(&mdc_obd_ops, LUSTRE_MDC_NAME);
 800 }
 801
 802 static void __exit ptlrpc_request_exit(void)
 803 {
 804         obd_unregister_type(LUSTRE_MDC_NAME);
 805 }
 806
 807 MODULE_AUTHOR("Cluster File Systems <info@clusterfs.com>");
 808 MODULE_DESCRIPTION("Lustre Metadata Client v1.0");
 809 MODULE_LICENSE("GPL");
 810
 811 EXPORT_SYMBOL(mdc_getstatus);
 812 EXPORT_SYMBOL(mdc_enqueue);
 813 EXPORT_SYMBOL(mdc_getattr);
 814 EXPORT_SYMBOL(mdc_statfs);
 815 EXPORT_SYMBOL(mdc_create);
 816 EXPORT_SYMBOL(mdc_unlink);
 817 EXPORT_SYMBOL(mdc_rename);
 818 EXPORT_SYMBOL(mdc_link);
 819 EXPORT_SYMBOL(mdc_readpage);
 820 EXPORT_SYMBOL(mdc_setattr);
 821 EXPORT_SYMBOL(mdc_close);
 822 EXPORT_SYMBOL(mdc_open);
 823
 824 module_init(ptlrpc_request_init);
 825 module_exit(ptlrpc_request_exit);