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 lustre_handle *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_req2(mdc->mdc_client, mdc->mdc_conn, &mdc->mdc_connh,
  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 lustre_handle *conn,
  84                 obd_id 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_req2(mdc->mdc_client, mdc->mdc_conn, &mdc->mdc_connh,
  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
 111         rc = ptlrpc_queue_wait(req);
 112         rc = ptlrpc_check_status(req, rc);
 113
 114         if (!rc) {
 115                 body = lustre_msg_buf(req->rq_repmsg, 0);
 116                 mds_unpack_body(body);
 117                 CDEBUG(D_NET, "mode: %o\n", body->mode);
 118         }
 119
 120         EXIT;
 121  out:
 122         *request = req;
 123         return rc;
 124 }
 125
 126 static int mdc_lock_callback(struct lustre_handle *lockh,
 127                              struct ldlm_lock_desc *desc, void *data,
 128                              int data_len, struct ptlrpc_request **req)
 129 {
 130         int rc;
 131         struct inode *inode = data;
 132         ENTRY;
 133
 134         if (desc == NULL) {
 135                 /* Completion AST.  Do nothing. */
 136                 RETURN(0);
 137         }
 138
 139         if (data_len != sizeof(*inode)) {
 140                 CERROR("data_len should be %d, but is %d\n", sizeof(*inode),
 141                        data_len);
 142                 LBUG();
 143         }
 144
 145         /* FIXME: do something better than throwing away everything */
 146         if (inode == NULL)
 147                 LBUG();
 148         if (S_ISDIR(inode->i_mode)) {
 149                 CDEBUG(D_INODE, "invalidating inode %ld\n", inode->i_ino);
 150                 invalidate_inode_pages(inode);
 151         }
 152
 153         rc = ldlm_cli_cancel(lockh, NULL);
 154         if (rc < 0) {
 155                 CERROR("ldlm_cli_cancel: %d\n", rc);
 156                 LBUG();
 157         }
 158         RETURN(0);
 159 }
 160
 161 int mdc_enqueue(struct lustre_handle *conn, int lock_type,
 162                 struct lookup_intent *it, int lock_mode, struct inode *dir,
 163                 struct dentry *de, struct lustre_handle *lockh, __u64 id,
 164                 char *tgt, int tgtlen, void *data, int datalen)
 165 {
 166         struct ptlrpc_request *req;
 167         struct obd_device *obddev = class_conn2obd(conn);
 168         struct mdc_obd *mdc = mdc_conn2mdc(conn);
 169         __u64 res_id[RES_NAME_SIZE] = {dir->i_ino};
 170         int size[5] = {sizeof(struct ldlm_request), sizeof(struct ldlm_intent)};
 171         int rc, flags;
 172         struct ldlm_reply *dlm_rep;
 173         struct ldlm_intent *lit;
 174         ENTRY;
 175
 176 #warning FIXME: Andreas, the sgid directory stuff also goes here, but check again on mds
 177
 178         LDLM_DEBUG_NOLOCK("mdsintent %d dir %ld", it->it_op, dir->i_ino);
 179
 180         switch (it->it_op) {
 181         case IT_MKDIR:
 182                 it->it_mode = (it->it_mode | S_IFDIR) & ~current->fs->umask;
 183                 break;
 184         case IT_SETATTR:
 185                 it->it_op = IT_GETATTR;
 186                 break;
 187         case (IT_CREAT|IT_OPEN):
 188         case IT_CREAT:
 189         case IT_MKNOD:
 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_req2(mdc->mdc_ldlm_client, mdc->mdc_conn,
 202                                        &mdc->mdc_connh, LDLM_ENQUEUE, 5, size,
 203                                        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_req2(mdc->mdc_ldlm_client, mdc->mdc_conn,
 227                                        &mdc->mdc_connh, LDLM_ENQUEUE, 5, size,
 228                                        NULL);
 229                 if (!req)
 230                         RETURN(-ENOMEM);
 231
 232                 /* pack the intent */
 233                 lit = lustre_msg_buf(req->rq_reqmsg, 1);
 234                 lit->opc = NTOH__u64((__u64)it->it_op);
 235
 236                 /* pack the intended request */
 237                 mds_rename_pack(req, 2, old_de->d_parent->d_inode, dir,
 238                                 old_de->d_name.name, old_de->d_name.len,
 239                                 de->d_name.name, de->d_name.len);
 240
 241                 size[0] = sizeof(struct ldlm_reply);
 242                 req->rq_replen = lustre_msg_size(1, 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_req2(mdc->mdc_ldlm_client, mdc->mdc_conn,
 247                                 &mdc->mdc_connh, 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_RMDIR) {
 262                 size[2] = sizeof(struct mds_rec_unlink);
 263                 size[3] = de->d_name.len + 1;
 264                 req = ptlrpc_prep_req2(mdc->mdc_ldlm_client, mdc->mdc_conn,
 265                                        &mdc->mdc_connh, LDLM_ENQUEUE, 4, size,
 266                                        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_req2(mdc->mdc_ldlm_client, mdc->mdc_conn,
 285                                        &mdc->mdc_connh, LDLM_ENQUEUE, 4, size,
 286                                        NULL);
 287                 if (!req)
 288                         RETURN(-ENOMEM);
 289
 290                 /* pack the intent */
 291                 lit = lustre_msg_buf(req->rq_reqmsg, 1);
 292                 lit->opc = NTOH__u64((__u64)it->it_op);
 293
 294                 /* pack the intended request */
 295                 mds_getattr_pack(req, 2, dir, de->d_name.name, de->d_name.len);
 296
 297                 /* get ready for the reply */
 298                 size[0] = sizeof(struct ldlm_reply);
 299                 size[1] = sizeof(struct mds_body);
 300                 size[2] = sizeof(struct obdo);
 301                 req->rq_replen = lustre_msg_size(3, size);
 302         } else if (it->it_op == IT_SETATTR) {
 303                 size[2] = sizeof(struct mds_rec_setattr);
 304                 size[3] = de->d_name.len + 1;
 305                 req = ptlrpc_prep_req2(mdc->mdc_ldlm_client, mdc->mdc_conn,
 306                                        &mdc->mdc_connh, LDLM_ENQUEUE, 5, size,
 307                                        NULL);
 308                 if (!req)
 309                         RETURN(-ENOMEM);
 310
 311                 lit = lustre_msg_buf(req->rq_reqmsg, 1);
 312                 lit->opc = NTOH__u64((__u64)it->it_op);
 313
 314                 if (!it->it_iattr)
 315                         LBUG();
 316
 317                 mds_setattr_pack(req, 2, dir, it->it_iattr,
 318                                 de->d_name.name, de->d_name.len);
 319                 size[0] = sizeof(struct ldlm_reply);
 320                 size[1] = sizeof(struct mds_body);
 321                 req->rq_replen = lustre_msg_size(2, size);
 322         } else if (it->it_op == IT_READDIR) {
 323                 req = ptlrpc_prep_req2(mdc->mdc_ldlm_client, mdc->mdc_conn,
 324                                 &mdc->mdc_connh, LDLM_ENQUEUE, 1, size, NULL);
 325                 if (!req)
 326                         RETURN(-ENOMEM);
 327
 328                 /* get ready for the reply */
 329                 size[0] = sizeof(struct ldlm_reply);
 330                 req->rq_replen = lustre_msg_size(1, size);
 331         } else {
 332                 LBUG();
 333                 RETURN(-1);
 334         }
 335 #warning FIXME: the data here needs to be different if a lock was granted for a different inode
 336         rc = ldlm_cli_enqueue(mdc->mdc_ldlm_client, mdc->mdc_conn, NULL, req,
 337                               obddev->obd_namespace, NULL, res_id, lock_type,
 338                               NULL, 0, lock_mode, &flags,
 339                               (void *)mdc_lock_callback, data, datalen, lockh);
 340         if (rc == -ENOENT || rc == ELDLM_LOCK_ABORTED) {
 341                 lock_mode = 0;
 342                 memset(lockh, 0, sizeof(*lockh));
 343         } else if (rc != 0) {
 344                 CERROR("ldlm_cli_enqueue: %d\n", rc);
 345                 RETURN(rc);
 346         }
 347
 348         dlm_rep = lustre_msg_buf(req->rq_repmsg, 0);
 349         it->it_disposition = (int) dlm_rep->lock_policy_res1;
 350         it->it_status = (int) dlm_rep->lock_policy_res2;
 351         it->it_lock_mode = lock_mode;
 352         it->it_data = req;
 353
 354         RETURN(0);
 355 }
 356
 357 int mdc_open(struct lustre_handle *conn, obd_id ino, int type, int flags,
 358              struct obdo *obdo,
 359              __u64 cookie, __u64 *fh, struct ptlrpc_request **request)
 360 {
 361         struct mdc_obd *mdc = mdc_conn2mdc(conn);
 362         struct mds_body *body;
 363         int rc, size[2] = {sizeof(*body)}, bufcount = 1;
 364         struct ptlrpc_request *req;
 365         ENTRY;
 366
 367         if (obdo != NULL) {
 368                 bufcount = 2;
 369                 size[1] = sizeof(*obdo);
 370         }
 371
 372         req = ptlrpc_prep_req2(mdc->mdc_client, mdc->mdc_conn, &mdc->mdc_connh,
 373                                MDS_OPEN, bufcount, size, NULL);
 374         if (!req)
 375                 GOTO(out, rc = -ENOMEM);
 376
 377         req->rq_flags |= PTL_RPC_FL_REPLAY;
 378         body = lustre_msg_buf(req->rq_reqmsg, 0);
 379
 380         ll_ino2fid(&body->fid1, ino, 0, type);
 381         body->flags = HTON__u32(flags);
 382         body->extra = cookie;
 383
 384         if (obdo != NULL)
 385                 memcpy(lustre_msg_buf(req->rq_reqmsg, 1), obdo, sizeof(*obdo));
 386
 387         req->rq_replen = lustre_msg_size(1, size);
 388
 389         rc = ptlrpc_queue_wait(req);
 390         rc = ptlrpc_check_status(req, rc);
 391
 392         if (!rc) {
 393                 body = lustre_msg_buf(req->rq_repmsg, 0);
 394                 mds_unpack_body(body);
 395                 *fh = body->extra;
 396         }
 397
 398         EXIT;
 399  out:
 400         *request = req;
 401         return rc;
 402 }
 403
 404 int mdc_close(struct lustre_handle *conn,
 405               obd_id ino, int type, __u64 fh, struct ptlrpc_request **request)
 406 {
 407         struct mdc_obd *mdc = mdc_conn2mdc(conn);
 408         struct mds_body *body;
 409         int rc, size = sizeof(*body);
 410         struct ptlrpc_request *req;
 411
 412         req = ptlrpc_prep_req2(mdc->mdc_client, mdc->mdc_conn, &mdc->mdc_connh,
 413                                MDS_CLOSE, 1, &size, NULL);
 414         if (!req)
 415                 GOTO(out, rc = -ENOMEM);
 416
 417         body = lustre_msg_buf(req->rq_reqmsg, 0);
 418         ll_ino2fid(&body->fid1, ino, 0, type);
 419         body->extra = fh;
 420
 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 lustre_handle *conn, obd_id 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_req2(mdc->mdc_client, mdc->mdc_conn, &mdc->mdc_connh,
 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         rc = ptlrpc_queue_wait(req);
 473         rc = ptlrpc_check_status(req, rc);
 474         if (rc) {
 475                 ptlrpc_abort_bulk(desc);
 476                 GOTO(out2, rc);
 477         } else {
 478                 body = lustre_msg_buf(req->rq_repmsg, 0);
 479                 mds_unpack_body(body);
 480         }
 481
 482         EXIT;
 483  out2:
 484         ptlrpc_free_bulk(desc);
 485  out:
 486         *request = req;
 487         return rc;
 488 }
 489
 490 int mdc_statfs(struct lustre_handle *conn, struct statfs *sfs,
 491                struct ptlrpc_request **request)
 492 {
 493         struct mdc_obd *mdc = mdc_conn2mdc(conn);
 494         struct obd_statfs *osfs;
 495         struct ptlrpc_request *req;
 496         int rc, size = sizeof(*osfs);
 497         ENTRY;
 498
 499         req = ptlrpc_prep_req2(mdc->mdc_client, mdc->mdc_conn, &mdc->mdc_connh,
 500                                MDS_STATFS, 0, NULL, NULL);
 501         if (!req)
 502                 GOTO(out, rc = -ENOMEM);
 503         req->rq_replen = lustre_msg_size(1, &size);
 504
 505         rc = ptlrpc_queue_wait(req);
 506         rc = ptlrpc_check_status(req, rc);
 507
 508         if (rc)
 509                 GOTO(out, rc);
 510
 511         osfs = lustre_msg_buf(req->rq_repmsg, 0);
 512         obd_statfs_unpack(osfs, sfs);
 513
 514         EXIT;
 515 out:
 516         *request = req;
 517
 518         return rc;
 519 }
 520
 521 static int mdc_ioctl(long cmd, struct lustre_handle *conn, int len, void *karg,
 522                      void *uarg)
 523 {
 524 #if 0
 525         /* FIXME XXX : This should use the new ioc_data to pass args in */
 526         int err = 0;
 527         struct ptlrpc_client cl;
 528         struct ptlrpc_connection *conn;
 529         struct ptlrpc_request *request;
 530
 531         ENTRY;
 532
 533         if (_IOC_TYPE(cmd) != IOC_REQUEST_TYPE ||
 534             _IOC_NR(cmd) < IOC_REQUEST_MIN_NR  ||
 535             _IOC_NR(cmd) > IOC_REQUEST_MAX_NR ) {
 536                 CDEBUG(D_IOCTL, "invalid ioctl ( type %d, nr %d, size %d )\n",
 537                        _IOC_TYPE(cmd), _IOC_NR(cmd), _IOC_SIZE(cmd));
 538                 RETURN(-EINVAL);
 539         }
 540
 541         ptlrpc_init_client(NULL, NULL,
 542                            MDS_REQUEST_PORTAL, MDC_REPLY_PORTAL, &cl);
 543         connection = ptlrpc_uuid_to_connection("mds");
 544         if (!connection) {
 545                 CERROR("cannot create client\n");
 546                 RETURN(-EINVAL);
 547         }
 548
 549         switch (cmd) {
 550         case IOC_REQUEST_GETATTR: {
 551                 CERROR("-- getting attr for ino %lu\n", arg);
 552                 err = mdc_getattr(&cl, connection, (obd_id)arg, S_IFDIR, ~0, 0,
 553                                   &request);
 554                 CERROR("-- done err %d\n", err);
 555
 556                 GOTO(out, err);
 557         }
 558
 559         case IOC_REQUEST_READPAGE: {
 560                 char *buf;
 561                 OBD_ALLOC(buf, PAGE_SIZE);
 562                 if (!buf) {
 563                         err = -ENOMEM;
 564                         GOTO(out, err);
 565                 }
 566                 CERROR("-- readpage 0 for ino %lu\n", arg);
 567                 err = mdc_readpage(&cl, connection, arg, S_IFDIR, 0, buf,
 568                                    &request);
 569                 CERROR("-- done err %d\n", err);
 570                 OBD_FREE(buf, PAGE_SIZE);
 571
 572                 GOTO(out, err);
 573         }
 574
 575         case IOC_REQUEST_SETATTR: {
 576                 struct inode inode;
 577                 struct iattr iattr;
 578
 579                 inode.i_ino = arg;
 580                 inode.i_generation = 0;
 581                 iattr.ia_mode = 040777;
 582                 iattr.ia_atime = 0;
 583                 iattr.ia_valid = ATTR_MODE | ATTR_ATIME;
 584
 585                 err = mdc_setattr(&cl, connection, &inode, &iattr, &request);
 586                 CERROR("-- done err %d\n", err);
 587
 588                 GOTO(out, err);
 589         }
 590
 591         case IOC_REQUEST_CREATE: {
 592                 struct inode inode;
 593                 struct iattr iattr;
 594
 595                 inode.i_ino = arg;
 596                 inode.i_generation = 0;
 597                 iattr.ia_mode = 040777;
 598                 iattr.ia_atime = 0;
 599                 iattr.ia_valid = ATTR_MODE | ATTR_ATIME;
 600
 601                 err = mdc_create(&cl, connection, &inode,
 602                                  "foofile", strlen("foofile"),
 603                                  NULL, 0, 0100707, 47114711,
 604                                  11, 47, 0, NULL, &request);
 605                 CERROR("-- done err %d\n", err);
 606
 607                 GOTO(out, err);
 608         }
 609
 610         case IOC_REQUEST_OPEN: {
 611                 __u64 fh, ino;
 612                 copy_from_user(&ino, (__u64 *)arg, sizeof(ino));
 613                 CERROR("-- opening ino %llu\n", (unsigned long long)ino);
 614                 err = mdc_open(&cl, connection, ino, S_IFDIR, O_RDONLY, 4711,
 615                                &fh, &request);
 616                 copy_to_user((__u64 *)arg, &fh, sizeof(fh));
 617                 CERROR("-- done err %d (fh=%Lu)\n", err,
 618                        (unsigned long long)fh);
 619
 620                 GOTO(out, err);
 621         }
 622
 623         case IOC_REQUEST_CLOSE: {
 624                 CERROR("-- closing ino 2, filehandle %lu\n", arg);
 625                 err = mdc_close(&cl, connection, 2, S_IFDIR, arg, &request);
 626                 CERROR("-- done err %d\n", err);
 627
 628                 GOTO(out, err);
 629         }
 630
 631         default:
 632                 GOTO(out, err = -EINVAL);
 633         }
 634
 635  out:
 636         ptlrpc_free_req(request);
 637         ptlrpc_put_connection(connection);
 638         ptlrpc_cleanup_client(&cl);
 639
 640         RETURN(err);
 641 #endif
 642         return 0;
 643 }
 644
 645 static int mdc_setup(struct obd_device *obddev, obd_count len, void *buf)
 646 {
 647         struct obd_ioctl_data* data = buf;
 648         struct mdc_obd *mdc = &obddev->u.mdc;
 649         char server_uuid[37];
 650         int rc;
 651         ENTRY;
 652
 653         if (data->ioc_inllen1 < 1) {
 654                 CERROR("osc setup requires a TARGET UUID\n");
 655                 RETURN(-EINVAL);
 656         }
 657
 658         if (data->ioc_inllen1 > 37) {
 659                 CERROR("mdc UUID must be less than 38 characters\n");
 660                 RETURN(-EINVAL);
 661         }
 662
 663         if (data->ioc_inllen2 < 1) {
 664                 CERROR("mdc setup requires a SERVER UUID\n");
 665                RETURN(-EINVAL);
 666         }
 667
 668         if (data->ioc_inllen2 > 37) {
 669                 CERROR("mdc UUID must be less than 38 characters\n");
 670                 RETURN(-EINVAL);
 671         }
 672
 673         memcpy(mdc->mdc_target_uuid, data->ioc_inlbuf1, data->ioc_inllen1);
 674         memcpy(server_uuid, data->ioc_inlbuf2, MIN(data->ioc_inllen2,
 675                                                    sizeof(server_uuid)));
 676
 677         mdc->mdc_conn = ptlrpc_uuid_to_connection(server_uuid);
 678         if (!mdc->mdc_conn)
 679                 RETURN(-ENOENT);
 680
 681         OBD_ALLOC(mdc->mdc_client, sizeof(*mdc->mdc_client));
 682         if (mdc->mdc_client == NULL)
 683                 GOTO(out_conn, rc = -ENOMEM);
 684
 685         OBD_ALLOC(mdc->mdc_ldlm_client, sizeof(*mdc->mdc_ldlm_client));
 686         if (mdc->mdc_ldlm_client == NULL)
 687                 GOTO(out_client, rc = -ENOMEM);
 688
 689         ptlrpc_init_client(NULL, NULL, MDS_REQUEST_PORTAL, MDC_REPLY_PORTAL,
 690                            mdc->mdc_client);
 691         ptlrpc_init_client(NULL, NULL, LDLM_REQUEST_PORTAL, LDLM_REPLY_PORTAL,
 692                            mdc->mdc_ldlm_client);
 693         mdc->mdc_client->cli_name = "mdc";
 694         mdc->mdc_ldlm_client->cli_name = "ldlm";
 695         /* XXX get recovery hooked in here again */
 696         //ptlrpc_init_client(ptlrpc_connmgr, ll_recover,...
 697
 698         ptlrpc_init_client(ptlrpc_connmgr, NULL,
 699                            MDS_REQUEST_PORTAL, MDC_REPLY_PORTAL,
 700                            mdc->mdc_client);
 701
 702         MOD_INC_USE_COUNT;
 703         RETURN(0);
 704
 705  out_client:
 706         OBD_FREE(mdc->mdc_client, sizeof(*mdc->mdc_client));
 707  out_conn:
 708         ptlrpc_put_connection(mdc->mdc_conn);
 709         return rc;
 710 }
 711
 712 static int mdc_cleanup(struct obd_device * obddev)
 713 {
 714         struct mdc_obd *mdc = &obddev->u.mdc;
 715
 716         ptlrpc_cleanup_client(mdc->mdc_client);
 717         OBD_FREE(mdc->mdc_client, sizeof(*mdc->mdc_client));
 718         ptlrpc_cleanup_client(mdc->mdc_ldlm_client);
 719         OBD_FREE(mdc->mdc_ldlm_client, sizeof(*mdc->mdc_ldlm_client));
 720         ptlrpc_put_connection(mdc->mdc_conn);
 721
 722         MOD_DEC_USE_COUNT;
 723         return 0;
 724 }
 725
 726 static int mdc_connect(struct lustre_handle *conn, struct obd_device *obd)
 727 {
 728         struct mdc_obd *mdc = &obd->u.mdc;
 729         struct ptlrpc_request *request;
 730         int rc, size = sizeof(mdc->mdc_target_uuid);
 731         char *tmp = mdc->mdc_target_uuid;
 732
 733         ENTRY;
 734
 735         obd->obd_namespace =
 736                 ldlm_namespace_new("mdc", LDLM_NAMESPACE_CLIENT);
 737         if (obd->obd_namespace == NULL)
 738                 RETURN(-ENOMEM);
 739
 740         MOD_INC_USE_COUNT;
 741         rc = class_connect(conn, obd);
 742         if (rc)
 743                 RETURN(rc);
 744
 745         request = ptlrpc_prep_req(mdc->mdc_client, mdc->mdc_conn,
 746                                   MDS_CONNECT, 1, &size, &tmp);
 747         if (!request)
 748                 GOTO(out_disco, -ENOMEM);
 749
 750         request->rq_replen = lustre_msg_size(0, NULL);
 751
 752         rc = ptlrpc_queue_wait(request);
 753         rc = ptlrpc_check_status(request, rc);
 754         if (rc)
 755                 GOTO(out, rc);
 756
 757         mdc->mdc_connh.addr = request->rq_repmsg->addr;
 758         mdc->mdc_connh.cookie = request->rq_repmsg->cookie;
 759
 760         EXIT;
 761  out:
 762         ptlrpc_free_req(request);
 763  out_disco:
 764         if (rc) {
 765                 class_disconnect(conn);
 766                 MOD_DEC_USE_COUNT;
 767         }
 768         return rc;
 769 }
 770
 771 static int mdc_disconnect(struct lustre_handle *conn)
 772 {
 773         struct mdc_obd *mdc = mdc_conn2mdc(conn);
 774         struct obd_device *obd = class_conn2obd(conn);
 775         struct ptlrpc_request *request;
 776         int rc;
 777         ENTRY;
 778
 779         ldlm_namespace_free(obd->obd_namespace);
 780         request = ptlrpc_prep_req2(mdc->mdc_client, mdc->mdc_conn,
 781                                    &mdc->mdc_connh, MDS_DISCONNECT, 0, NULL, NULL);
 782         if (!request)
 783                 RETURN(-ENOMEM);
 784
 785         request->rq_replen = lustre_msg_size(0, NULL);
 786
 787         rc = ptlrpc_queue_wait(request);
 788         if (rc)
 789                 GOTO(out, rc);
 790         rc = class_disconnect(conn);
 791         if (!rc)
 792                 MOD_DEC_USE_COUNT;
 793  out:
 794         ptlrpc_free_req(request);
 795         return rc;
 796 }
 797
 798 struct obd_ops mdc_obd_ops = {
 799         o_setup:   mdc_setup,
 800         o_cleanup: mdc_cleanup,
 801         o_connect: mdc_connect,
 802         o_disconnect: mdc_disconnect,
 803         o_iocontrol: mdc_ioctl
 804 };
 805
 806 static int __init ptlrpc_request_init(void)
 807 {
 808         return class_register_type(&mdc_obd_ops, LUSTRE_MDC_NAME);
 809 }
 810
 811 static void __exit ptlrpc_request_exit(void)
 812 {
 813         class_unregister_type(LUSTRE_MDC_NAME);
 814 }
 815
 816 MODULE_AUTHOR("Cluster File Systems <info@clusterfs.com>");
 817 MODULE_DESCRIPTION("Lustre Metadata Client v1.0");
 818 MODULE_LICENSE("GPL");
 819
 820 EXPORT_SYMBOL(mdc_getstatus);
 821 EXPORT_SYMBOL(mdc_enqueue);
 822 EXPORT_SYMBOL(mdc_getattr);
 823 EXPORT_SYMBOL(mdc_statfs);
 824 EXPORT_SYMBOL(mdc_create);
 825 EXPORT_SYMBOL(mdc_unlink);
 826 EXPORT_SYMBOL(mdc_rename);
 827 EXPORT_SYMBOL(mdc_link);
 828 EXPORT_SYMBOL(mdc_readpage);
 829 EXPORT_SYMBOL(mdc_setattr);
 830 EXPORT_SYMBOL(mdc_close);
 831 EXPORT_SYMBOL(mdc_open);
 832
 833 module_init(ptlrpc_request_init);
 834 module_exit(ptlrpc_request_exit);