1/* 2 * GPL HEADER START 3 * 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 only, 8 * as published by the Free Software Foundation. 9 * 10 * This program is distributed in the hope that it will be useful, but 11 * WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * General Public License version 2 for more details (a copy is included 14 * in the LICENSE file that accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License 17 * version 2 along with this program; If not, see 18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf 19 * 20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, 21 * CA 95054 USA or visit www.sun.com if you need additional information or 22 * have any questions. 23 * 24 * GPL HEADER END 25 */ 26/* 27 * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved. 28 * Use is subject to license terms. 29 * 30 * Copyright (c) 2011, 2012, Intel Corporation. 31 */ 32/* 33 * This file is part of Lustre, http://www.lustre.org/ 34 * Lustre is a trademark of Sun Microsystems, Inc. 35 */ 36 37#define DEBUG_SUBSYSTEM S_MDC 38 39# include <linux/module.h> 40# include <linux/pagemap.h> 41# include <linux/miscdevice.h> 42# include <linux/init.h> 43# include <linux/utsname.h> 44 45#include "../include/lustre_acl.h" 46#include "../include/obd_class.h" 47#include "../include/lustre_fid.h" 48#include "../include/lprocfs_status.h" 49#include "../include/lustre_param.h" 50#include "../include/lustre_log.h" 51 52#include "mdc_internal.h" 53 54#define REQUEST_MINOR 244 55 56struct mdc_renew_capa_args { 57 struct obd_capa *ra_oc; 58 renew_capa_cb_t ra_cb; 59}; 60 61static int mdc_cleanup(struct obd_device *obd); 62 63int mdc_unpack_capa(struct obd_export *exp, struct ptlrpc_request *req, 64 const struct req_msg_field *field, struct obd_capa **oc) 65{ 66 struct lustre_capa *capa; 67 struct obd_capa *c; 68 69 /* swabbed already in mdc_enqueue */ 70 capa = req_capsule_server_get(&req->rq_pill, field); 71 if (capa == NULL) 72 return -EPROTO; 73 74 c = alloc_capa(CAPA_SITE_CLIENT); 75 if (IS_ERR(c)) { 76 CDEBUG(D_INFO, "alloc capa failed!\n"); 77 return PTR_ERR(c); 78 } else { 79 c->c_capa = *capa; 80 *oc = c; 81 return 0; 82 } 83} 84 85static inline int mdc_queue_wait(struct ptlrpc_request *req) 86{ 87 struct client_obd *cli = &req->rq_import->imp_obd->u.cli; 88 int rc; 89 90 /* mdc_enter_request() ensures that this client has no more 91 * than cl_max_rpcs_in_flight RPCs simultaneously inf light 92 * against an MDT. */ 93 rc = mdc_enter_request(cli); 94 if (rc != 0) 95 return rc; 96 97 rc = ptlrpc_queue_wait(req); 98 mdc_exit_request(cli); 99 100 return rc; 101} 102 103/* Helper that implements most of mdc_getstatus and signal_completed_replay. */ 104/* XXX this should become mdc_get_info("key"), sending MDS_GET_INFO RPC */ 105static int send_getstatus(struct obd_import *imp, struct lu_fid *rootfid, 106 struct obd_capa **pc, int level, int msg_flags) 107{ 108 struct ptlrpc_request *req; 109 struct mdt_body *body; 110 int rc; 111 112 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_GETSTATUS, 113 LUSTRE_MDS_VERSION, MDS_GETSTATUS); 114 if (req == NULL) 115 return -ENOMEM; 116 117 mdc_pack_body(req, NULL, NULL, 0, 0, -1, 0); 118 lustre_msg_add_flags(req->rq_reqmsg, msg_flags); 119 req->rq_send_state = level; 120 121 ptlrpc_request_set_replen(req); 122 123 rc = ptlrpc_queue_wait(req); 124 if (rc) 125 goto out; 126 127 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY); 128 if (body == NULL) { 129 rc = -EPROTO; 130 goto out; 131 } 132 133 if (body->valid & OBD_MD_FLMDSCAPA) { 134 rc = mdc_unpack_capa(NULL, req, &RMF_CAPA1, pc); 135 if (rc) 136 goto out; 137 } 138 139 *rootfid = body->fid1; 140 CDEBUG(D_NET, 141 "root fid="DFID", last_committed=%llu\n", 142 PFID(rootfid), 143 lustre_msg_get_last_committed(req->rq_repmsg)); 144out: 145 ptlrpc_req_finished(req); 146 return rc; 147} 148 149/* This should be mdc_get_info("rootfid") */ 150int mdc_getstatus(struct obd_export *exp, struct lu_fid *rootfid, 151 struct obd_capa **pc) 152{ 153 return send_getstatus(class_exp2cliimp(exp), rootfid, pc, 154 LUSTRE_IMP_FULL, 0); 155} 156 157/* 158 * This function now is known to always saying that it will receive 4 buffers 159 * from server. Even for cases when acl_size and md_size is zero, RPC header 160 * will contain 4 fields and RPC itself will contain zero size fields. This is 161 * because mdt_getattr*() _always_ returns 4 fields, but if acl is not needed 162 * and thus zero, it shrinks it, making zero size. The same story about 163 * md_size. And this is course of problem when client waits for smaller number 164 * of fields. This issue will be fixed later when client gets aware of RPC 165 * layouts. --umka 166 */ 167static int mdc_getattr_common(struct obd_export *exp, 168 struct ptlrpc_request *req) 169{ 170 struct req_capsule *pill = &req->rq_pill; 171 struct mdt_body *body; 172 void *eadata; 173 int rc; 174 175 /* Request message already built. */ 176 rc = ptlrpc_queue_wait(req); 177 if (rc != 0) 178 return rc; 179 180 /* sanity check for the reply */ 181 body = req_capsule_server_get(pill, &RMF_MDT_BODY); 182 if (body == NULL) 183 return -EPROTO; 184 185 CDEBUG(D_NET, "mode: %o\n", body->mode); 186 187 if (body->eadatasize != 0) { 188 mdc_update_max_ea_from_body(exp, body); 189 190 eadata = req_capsule_server_sized_get(pill, &RMF_MDT_MD, 191 body->eadatasize); 192 if (eadata == NULL) 193 return -EPROTO; 194 } 195 196 if (body->valid & OBD_MD_FLRMTPERM) { 197 struct mdt_remote_perm *perm; 198 199 LASSERT(client_is_remote(exp)); 200 perm = req_capsule_server_swab_get(pill, &RMF_ACL, 201 lustre_swab_mdt_remote_perm); 202 if (perm == NULL) 203 return -EPROTO; 204 } 205 206 if (body->valid & OBD_MD_FLMDSCAPA) { 207 struct lustre_capa *capa; 208 209 capa = req_capsule_server_get(pill, &RMF_CAPA1); 210 if (capa == NULL) 211 return -EPROTO; 212 } 213 214 return 0; 215} 216 217int mdc_getattr(struct obd_export *exp, struct md_op_data *op_data, 218 struct ptlrpc_request **request) 219{ 220 struct ptlrpc_request *req; 221 int rc; 222 223 /* Single MDS without an LMV case */ 224 if (op_data->op_flags & MF_GET_MDT_IDX) { 225 op_data->op_mds = 0; 226 return 0; 227 } 228 *request = NULL; 229 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_GETATTR); 230 if (req == NULL) 231 return -ENOMEM; 232 233 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1); 234 235 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR); 236 if (rc) { 237 ptlrpc_request_free(req); 238 return rc; 239 } 240 241 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1, 242 op_data->op_valid, op_data->op_mode, -1, 0); 243 244 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER, 245 op_data->op_mode); 246 if (op_data->op_valid & OBD_MD_FLRMTPERM) { 247 LASSERT(client_is_remote(exp)); 248 req_capsule_set_size(&req->rq_pill, &RMF_ACL, RCL_SERVER, 249 sizeof(struct mdt_remote_perm)); 250 } 251 ptlrpc_request_set_replen(req); 252 253 rc = mdc_getattr_common(exp, req); 254 if (rc) 255 ptlrpc_req_finished(req); 256 else 257 *request = req; 258 return rc; 259} 260 261int mdc_getattr_name(struct obd_export *exp, struct md_op_data *op_data, 262 struct ptlrpc_request **request) 263{ 264 struct ptlrpc_request *req; 265 int rc; 266 267 *request = NULL; 268 req = ptlrpc_request_alloc(class_exp2cliimp(exp), 269 &RQF_MDS_GETATTR_NAME); 270 if (req == NULL) 271 return -ENOMEM; 272 273 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1); 274 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT, 275 op_data->op_namelen + 1); 276 277 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR_NAME); 278 if (rc) { 279 ptlrpc_request_free(req); 280 return rc; 281 } 282 283 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1, 284 op_data->op_valid, op_data->op_mode, 285 op_data->op_suppgids[0], 0); 286 287 if (op_data->op_name) { 288 char *name = req_capsule_client_get(&req->rq_pill, &RMF_NAME); 289 290 LASSERT(strnlen(op_data->op_name, op_data->op_namelen) == 291 op_data->op_namelen); 292 memcpy(name, op_data->op_name, op_data->op_namelen); 293 } 294 295 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER, 296 op_data->op_mode); 297 ptlrpc_request_set_replen(req); 298 299 rc = mdc_getattr_common(exp, req); 300 if (rc) 301 ptlrpc_req_finished(req); 302 else 303 *request = req; 304 return rc; 305} 306 307static int mdc_is_subdir(struct obd_export *exp, 308 const struct lu_fid *pfid, 309 const struct lu_fid *cfid, 310 struct ptlrpc_request **request) 311{ 312 struct ptlrpc_request *req; 313 int rc; 314 315 *request = NULL; 316 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), 317 &RQF_MDS_IS_SUBDIR, LUSTRE_MDS_VERSION, 318 MDS_IS_SUBDIR); 319 if (req == NULL) 320 return -ENOMEM; 321 322 mdc_is_subdir_pack(req, pfid, cfid, 0); 323 ptlrpc_request_set_replen(req); 324 325 rc = ptlrpc_queue_wait(req); 326 if (rc && rc != -EREMOTE) 327 ptlrpc_req_finished(req); 328 else 329 *request = req; 330 return rc; 331} 332 333static int mdc_xattr_common(struct obd_export *exp, 334 const struct req_format *fmt, 335 const struct lu_fid *fid, 336 struct obd_capa *oc, int opcode, u64 valid, 337 const char *xattr_name, const char *input, 338 int input_size, int output_size, int flags, 339 __u32 suppgid, struct ptlrpc_request **request) 340{ 341 struct ptlrpc_request *req; 342 int xattr_namelen = 0; 343 char *tmp; 344 int rc; 345 346 *request = NULL; 347 req = ptlrpc_request_alloc(class_exp2cliimp(exp), fmt); 348 if (req == NULL) 349 return -ENOMEM; 350 351 mdc_set_capa_size(req, &RMF_CAPA1, oc); 352 if (xattr_name) { 353 xattr_namelen = strlen(xattr_name) + 1; 354 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT, 355 xattr_namelen); 356 } 357 if (input_size) { 358 LASSERT(input); 359 req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_CLIENT, 360 input_size); 361 } 362 363 /* Flush local XATTR locks to get rid of a possible cancel RPC */ 364 if (opcode == MDS_REINT && fid_is_sane(fid) && 365 exp->exp_connect_data.ocd_ibits_known & MDS_INODELOCK_XATTR) { 366 LIST_HEAD(cancels); 367 int count; 368 369 /* Without that packing would fail */ 370 if (input_size == 0) 371 req_capsule_set_size(&req->rq_pill, &RMF_EADATA, 372 RCL_CLIENT, 0); 373 374 count = mdc_resource_get_unused(exp, fid, 375 &cancels, LCK_EX, 376 MDS_INODELOCK_XATTR); 377 378 rc = mdc_prep_elc_req(exp, req, MDS_REINT, &cancels, count); 379 if (rc) { 380 ptlrpc_request_free(req); 381 return rc; 382 } 383 } else { 384 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, opcode); 385 if (rc) { 386 ptlrpc_request_free(req); 387 return rc; 388 } 389 } 390 391 if (opcode == MDS_REINT) { 392 struct mdt_rec_setxattr *rec; 393 394 CLASSERT(sizeof(struct mdt_rec_setxattr) == 395 sizeof(struct mdt_rec_reint)); 396 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT); 397 rec->sx_opcode = REINT_SETXATTR; 398 rec->sx_fsuid = from_kuid(&init_user_ns, current_fsuid()); 399 rec->sx_fsgid = from_kgid(&init_user_ns, current_fsgid()); 400 rec->sx_cap = cfs_curproc_cap_pack(); 401 rec->sx_suppgid1 = suppgid; 402 rec->sx_suppgid2 = -1; 403 rec->sx_fid = *fid; 404 rec->sx_valid = valid | OBD_MD_FLCTIME; 405 rec->sx_time = get_seconds(); 406 rec->sx_size = output_size; 407 rec->sx_flags = flags; 408 409 mdc_pack_capa(req, &RMF_CAPA1, oc); 410 } else { 411 mdc_pack_body(req, fid, oc, valid, output_size, suppgid, flags); 412 } 413 414 if (xattr_name) { 415 tmp = req_capsule_client_get(&req->rq_pill, &RMF_NAME); 416 memcpy(tmp, xattr_name, xattr_namelen); 417 } 418 if (input_size) { 419 tmp = req_capsule_client_get(&req->rq_pill, &RMF_EADATA); 420 memcpy(tmp, input, input_size); 421 } 422 423 if (req_capsule_has_field(&req->rq_pill, &RMF_EADATA, RCL_SERVER)) 424 req_capsule_set_size(&req->rq_pill, &RMF_EADATA, 425 RCL_SERVER, output_size); 426 ptlrpc_request_set_replen(req); 427 428 /* make rpc */ 429 if (opcode == MDS_REINT) 430 mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL); 431 432 rc = ptlrpc_queue_wait(req); 433 434 if (opcode == MDS_REINT) 435 mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL); 436 437 if (rc) 438 ptlrpc_req_finished(req); 439 else 440 *request = req; 441 return rc; 442} 443 444int mdc_setxattr(struct obd_export *exp, const struct lu_fid *fid, 445 struct obd_capa *oc, u64 valid, const char *xattr_name, 446 const char *input, int input_size, int output_size, 447 int flags, __u32 suppgid, struct ptlrpc_request **request) 448{ 449 return mdc_xattr_common(exp, &RQF_MDS_REINT_SETXATTR, 450 fid, oc, MDS_REINT, valid, xattr_name, 451 input, input_size, output_size, flags, 452 suppgid, request); 453} 454 455int mdc_getxattr(struct obd_export *exp, const struct lu_fid *fid, 456 struct obd_capa *oc, u64 valid, const char *xattr_name, 457 const char *input, int input_size, int output_size, 458 int flags, struct ptlrpc_request **request) 459{ 460 return mdc_xattr_common(exp, &RQF_MDS_GETXATTR, 461 fid, oc, MDS_GETXATTR, valid, xattr_name, 462 input, input_size, output_size, flags, 463 -1, request); 464} 465 466#ifdef CONFIG_FS_POSIX_ACL 467static int mdc_unpack_acl(struct ptlrpc_request *req, struct lustre_md *md) 468{ 469 struct req_capsule *pill = &req->rq_pill; 470 struct mdt_body *body = md->body; 471 struct posix_acl *acl; 472 void *buf; 473 int rc; 474 475 if (!body->aclsize) 476 return 0; 477 478 buf = req_capsule_server_sized_get(pill, &RMF_ACL, body->aclsize); 479 480 if (!buf) 481 return -EPROTO; 482 483 acl = posix_acl_from_xattr(&init_user_ns, buf, body->aclsize); 484 if (IS_ERR(acl)) { 485 rc = PTR_ERR(acl); 486 CERROR("convert xattr to acl: %d\n", rc); 487 return rc; 488 } 489 490 rc = posix_acl_valid(acl); 491 if (rc) { 492 CERROR("validate acl: %d\n", rc); 493 posix_acl_release(acl); 494 return rc; 495 } 496 497 md->posix_acl = acl; 498 return 0; 499} 500#else 501#define mdc_unpack_acl(req, md) 0 502#endif 503 504int mdc_get_lustre_md(struct obd_export *exp, struct ptlrpc_request *req, 505 struct obd_export *dt_exp, struct obd_export *md_exp, 506 struct lustre_md *md) 507{ 508 struct req_capsule *pill = &req->rq_pill; 509 int rc; 510 511 LASSERT(md); 512 memset(md, 0, sizeof(*md)); 513 514 md->body = req_capsule_server_get(pill, &RMF_MDT_BODY); 515 LASSERT(md->body != NULL); 516 517 if (md->body->valid & OBD_MD_FLEASIZE) { 518 int lmmsize; 519 struct lov_mds_md *lmm; 520 521 if (!S_ISREG(md->body->mode)) { 522 CDEBUG(D_INFO, 523 "OBD_MD_FLEASIZE set, should be a regular file, but is not\n"); 524 rc = -EPROTO; 525 goto out; 526 } 527 528 if (md->body->eadatasize == 0) { 529 CDEBUG(D_INFO, 530 "OBD_MD_FLEASIZE set, but eadatasize 0\n"); 531 rc = -EPROTO; 532 goto out; 533 } 534 lmmsize = md->body->eadatasize; 535 lmm = req_capsule_server_sized_get(pill, &RMF_MDT_MD, lmmsize); 536 if (!lmm) { 537 rc = -EPROTO; 538 goto out; 539 } 540 541 rc = obd_unpackmd(dt_exp, &md->lsm, lmm, lmmsize); 542 if (rc < 0) 543 goto out; 544 545 if (rc < sizeof(*md->lsm)) { 546 CDEBUG(D_INFO, 547 "lsm size too small: rc < sizeof (*md->lsm) (%d < %d)\n", 548 rc, (int)sizeof(*md->lsm)); 549 rc = -EPROTO; 550 goto out; 551 } 552 553 } else if (md->body->valid & OBD_MD_FLDIREA) { 554 int lmvsize; 555 struct lov_mds_md *lmv; 556 557 if (!S_ISDIR(md->body->mode)) { 558 CDEBUG(D_INFO, 559 "OBD_MD_FLDIREA set, should be a directory, but is not\n"); 560 rc = -EPROTO; 561 goto out; 562 } 563 564 if (md->body->eadatasize == 0) { 565 CDEBUG(D_INFO, 566 "OBD_MD_FLDIREA is set, but eadatasize 0\n"); 567 return -EPROTO; 568 } 569 if (md->body->valid & OBD_MD_MEA) { 570 lmvsize = md->body->eadatasize; 571 lmv = req_capsule_server_sized_get(pill, &RMF_MDT_MD, 572 lmvsize); 573 if (!lmv) { 574 rc = -EPROTO; 575 goto out; 576 } 577 578 rc = obd_unpackmd(md_exp, (void *)&md->mea, lmv, 579 lmvsize); 580 if (rc < 0) 581 goto out; 582 583 if (rc < sizeof(*md->mea)) { 584 CDEBUG(D_INFO, 585 "size too small: rc < sizeof(*md->mea) (%d < %d)\n", 586 rc, (int)sizeof(*md->mea)); 587 rc = -EPROTO; 588 goto out; 589 } 590 } 591 } 592 rc = 0; 593 594 if (md->body->valid & OBD_MD_FLRMTPERM) { 595 /* remote permission */ 596 LASSERT(client_is_remote(exp)); 597 md->remote_perm = req_capsule_server_swab_get(pill, &RMF_ACL, 598 lustre_swab_mdt_remote_perm); 599 if (!md->remote_perm) { 600 rc = -EPROTO; 601 goto out; 602 } 603 } else if (md->body->valid & OBD_MD_FLACL) { 604 /* for ACL, it's possible that FLACL is set but aclsize is zero. 605 * only when aclsize != 0 there's an actual segment for ACL 606 * in reply buffer. 607 */ 608 if (md->body->aclsize) { 609 rc = mdc_unpack_acl(req, md); 610 if (rc) 611 goto out; 612#ifdef CONFIG_FS_POSIX_ACL 613 } else { 614 md->posix_acl = NULL; 615#endif 616 } 617 } 618 if (md->body->valid & OBD_MD_FLMDSCAPA) { 619 struct obd_capa *oc = NULL; 620 621 rc = mdc_unpack_capa(NULL, req, &RMF_CAPA1, &oc); 622 if (rc) 623 goto out; 624 md->mds_capa = oc; 625 } 626 627 if (md->body->valid & OBD_MD_FLOSSCAPA) { 628 struct obd_capa *oc = NULL; 629 630 rc = mdc_unpack_capa(NULL, req, &RMF_CAPA2, &oc); 631 if (rc) 632 goto out; 633 md->oss_capa = oc; 634 } 635 636out: 637 if (rc) { 638 if (md->oss_capa) { 639 capa_put(md->oss_capa); 640 md->oss_capa = NULL; 641 } 642 if (md->mds_capa) { 643 capa_put(md->mds_capa); 644 md->mds_capa = NULL; 645 } 646#ifdef CONFIG_FS_POSIX_ACL 647 posix_acl_release(md->posix_acl); 648#endif 649 if (md->lsm) 650 obd_free_memmd(dt_exp, &md->lsm); 651 } 652 return rc; 653} 654 655int mdc_free_lustre_md(struct obd_export *exp, struct lustre_md *md) 656{ 657 return 0; 658} 659 660/** 661 * Handles both OPEN and SETATTR RPCs for OPEN-CLOSE and SETATTR-DONE_WRITING 662 * RPC chains. 663 */ 664void mdc_replay_open(struct ptlrpc_request *req) 665{ 666 struct md_open_data *mod = req->rq_cb_data; 667 struct ptlrpc_request *close_req; 668 struct obd_client_handle *och; 669 struct lustre_handle old; 670 struct mdt_body *body; 671 672 if (mod == NULL) { 673 DEBUG_REQ(D_ERROR, req, 674 "Can't properly replay without open data."); 675 return; 676 } 677 678 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY); 679 LASSERT(body != NULL); 680 681 och = mod->mod_och; 682 if (och != NULL) { 683 struct lustre_handle *file_fh; 684 685 LASSERT(och->och_magic == OBD_CLIENT_HANDLE_MAGIC); 686 687 file_fh = &och->och_fh; 688 CDEBUG(D_HA, "updating handle from %#llx to %#llx\n", 689 file_fh->cookie, body->handle.cookie); 690 old = *file_fh; 691 *file_fh = body->handle; 692 } 693 close_req = mod->mod_close_req; 694 if (close_req != NULL) { 695 __u32 opc = lustre_msg_get_opc(close_req->rq_reqmsg); 696 struct mdt_ioepoch *epoch; 697 698 LASSERT(opc == MDS_CLOSE || opc == MDS_DONE_WRITING); 699 epoch = req_capsule_client_get(&close_req->rq_pill, 700 &RMF_MDT_EPOCH); 701 LASSERT(epoch); 702 703 if (och != NULL) 704 LASSERT(!memcmp(&old, &epoch->handle, sizeof(old))); 705 DEBUG_REQ(D_HA, close_req, "updating close body with new fh"); 706 epoch->handle = body->handle; 707 } 708} 709 710void mdc_commit_open(struct ptlrpc_request *req) 711{ 712 struct md_open_data *mod = req->rq_cb_data; 713 714 if (mod == NULL) 715 return; 716 717 /** 718 * No need to touch md_open_data::mod_och, it holds a reference on 719 * \var mod and will zero references to each other, \var mod will be 720 * freed after that when md_open_data::mod_och will put the reference. 721 */ 722 723 /** 724 * Do not let open request to disappear as it still may be needed 725 * for close rpc to happen (it may happen on evict only, otherwise 726 * ptlrpc_request::rq_replay does not let mdc_commit_open() to be 727 * called), just mark this rpc as committed to distinguish these 2 728 * cases, see mdc_close() for details. The open request reference will 729 * be put along with freeing \var mod. 730 */ 731 ptlrpc_request_addref(req); 732 spin_lock(&req->rq_lock); 733 req->rq_committed = 1; 734 spin_unlock(&req->rq_lock); 735 req->rq_cb_data = NULL; 736 obd_mod_put(mod); 737} 738 739int mdc_set_open_replay_data(struct obd_export *exp, 740 struct obd_client_handle *och, 741 struct lookup_intent *it) 742{ 743 struct md_open_data *mod; 744 struct mdt_rec_create *rec; 745 struct mdt_body *body; 746 struct ptlrpc_request *open_req = it->d.lustre.it_data; 747 struct obd_import *imp = open_req->rq_import; 748 749 if (!open_req->rq_replay) 750 return 0; 751 752 rec = req_capsule_client_get(&open_req->rq_pill, &RMF_REC_REINT); 753 body = req_capsule_server_get(&open_req->rq_pill, &RMF_MDT_BODY); 754 LASSERT(rec != NULL); 755 /* Incoming message in my byte order (it's been swabbed). */ 756 /* Outgoing messages always in my byte order. */ 757 LASSERT(body != NULL); 758 759 /* Only if the import is replayable, we set replay_open data */ 760 if (och && imp->imp_replayable) { 761 mod = obd_mod_alloc(); 762 if (mod == NULL) { 763 DEBUG_REQ(D_ERROR, open_req, 764 "Can't allocate md_open_data"); 765 return 0; 766 } 767 768 /** 769 * Take a reference on \var mod, to be freed on mdc_close(). 770 * It protects \var mod from being freed on eviction (commit 771 * callback is called despite rq_replay flag). 772 * Another reference for \var och. 773 */ 774 obd_mod_get(mod); 775 obd_mod_get(mod); 776 777 spin_lock(&open_req->rq_lock); 778 och->och_mod = mod; 779 mod->mod_och = och; 780 mod->mod_is_create = it_disposition(it, DISP_OPEN_CREATE) || 781 it_disposition(it, DISP_OPEN_STRIPE); 782 mod->mod_open_req = open_req; 783 open_req->rq_cb_data = mod; 784 open_req->rq_commit_cb = mdc_commit_open; 785 spin_unlock(&open_req->rq_lock); 786 } 787 788 rec->cr_fid2 = body->fid1; 789 rec->cr_ioepoch = body->ioepoch; 790 rec->cr_old_handle.cookie = body->handle.cookie; 791 open_req->rq_replay_cb = mdc_replay_open; 792 if (!fid_is_sane(&body->fid1)) { 793 DEBUG_REQ(D_ERROR, open_req, 794 "Saving replay request with insane fid"); 795 LBUG(); 796 } 797 798 DEBUG_REQ(D_RPCTRACE, open_req, "Set up open replay data"); 799 return 0; 800} 801 802static void mdc_free_open(struct md_open_data *mod) 803{ 804 int committed = 0; 805 806 if (mod->mod_is_create == 0 && 807 imp_connect_disp_stripe(mod->mod_open_req->rq_import)) 808 committed = 1; 809 810 LASSERT(mod->mod_open_req->rq_replay == 0); 811 812 DEBUG_REQ(D_RPCTRACE, mod->mod_open_req, "free open request\n"); 813 814 ptlrpc_request_committed(mod->mod_open_req, committed); 815 if (mod->mod_close_req) 816 ptlrpc_request_committed(mod->mod_close_req, committed); 817} 818 819int mdc_clear_open_replay_data(struct obd_export *exp, 820 struct obd_client_handle *och) 821{ 822 struct md_open_data *mod = och->och_mod; 823 824 /** 825 * It is possible to not have \var mod in a case of eviction between 826 * lookup and ll_file_open(). 827 **/ 828 if (mod == NULL) 829 return 0; 830 831 LASSERT(mod != LP_POISON); 832 LASSERT(mod->mod_open_req != NULL); 833 mdc_free_open(mod); 834 835 mod->mod_och = NULL; 836 och->och_mod = NULL; 837 obd_mod_put(mod); 838 839 return 0; 840} 841 842/* Prepares the request for the replay by the given reply */ 843static void mdc_close_handle_reply(struct ptlrpc_request *req, 844 struct md_op_data *op_data, int rc) { 845 struct mdt_body *repbody; 846 struct mdt_ioepoch *epoch; 847 848 if (req && rc == -EAGAIN) { 849 repbody = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY); 850 epoch = req_capsule_client_get(&req->rq_pill, &RMF_MDT_EPOCH); 851 852 epoch->flags |= MF_SOM_AU; 853 if (repbody->valid & OBD_MD_FLGETATTRLOCK) 854 op_data->op_flags |= MF_GETATTR_LOCK; 855 } 856} 857 858int mdc_close(struct obd_export *exp, struct md_op_data *op_data, 859 struct md_open_data *mod, struct ptlrpc_request **request) 860{ 861 struct obd_device *obd = class_exp2obd(exp); 862 struct ptlrpc_request *req; 863 struct req_format *req_fmt; 864 int rc; 865 int saved_rc = 0; 866 867 868 req_fmt = &RQF_MDS_CLOSE; 869 if (op_data->op_bias & MDS_HSM_RELEASE) { 870 req_fmt = &RQF_MDS_RELEASE_CLOSE; 871 872 /* allocate a FID for volatile file */ 873 rc = mdc_fid_alloc(exp, &op_data->op_fid2, op_data); 874 if (rc < 0) { 875 CERROR("%s: "DFID" failed to allocate FID: %d\n", 876 obd->obd_name, PFID(&op_data->op_fid1), rc); 877 /* save the errcode and proceed to close */ 878 saved_rc = rc; 879 } 880 } 881 882 *request = NULL; 883 req = ptlrpc_request_alloc(class_exp2cliimp(exp), req_fmt); 884 if (req == NULL) 885 return -ENOMEM; 886 887 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1); 888 889 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_CLOSE); 890 if (rc) { 891 ptlrpc_request_free(req); 892 return rc; 893 } 894 895 /* To avoid a livelock (bug 7034), we need to send CLOSE RPCs to a 896 * portal whose threads are not taking any DLM locks and are therefore 897 * always progressing */ 898 req->rq_request_portal = MDS_READPAGE_PORTAL; 899 ptlrpc_at_set_req_timeout(req); 900 901 /* Ensure that this close's handle is fixed up during replay. */ 902 if (likely(mod != NULL)) { 903 LASSERTF(mod->mod_open_req != NULL && 904 mod->mod_open_req->rq_type != LI_POISON, 905 "POISONED open %p!\n", mod->mod_open_req); 906 907 mod->mod_close_req = req; 908 909 DEBUG_REQ(D_HA, mod->mod_open_req, "matched open"); 910 /* We no longer want to preserve this open for replay even 911 * though the open was committed. b=3632, b=3633 */ 912 spin_lock(&mod->mod_open_req->rq_lock); 913 mod->mod_open_req->rq_replay = 0; 914 spin_unlock(&mod->mod_open_req->rq_lock); 915 } else { 916 CDEBUG(D_HA, 917 "couldn't find open req; expecting close error\n"); 918 } 919 920 mdc_close_pack(req, op_data); 921 922 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER, 923 obd->u.cli.cl_default_mds_easize); 924 req_capsule_set_size(&req->rq_pill, &RMF_LOGCOOKIES, RCL_SERVER, 925 obd->u.cli.cl_default_mds_cookiesize); 926 927 ptlrpc_request_set_replen(req); 928 929 mdc_get_rpc_lock(obd->u.cli.cl_close_lock, NULL); 930 rc = ptlrpc_queue_wait(req); 931 mdc_put_rpc_lock(obd->u.cli.cl_close_lock, NULL); 932 933 if (req->rq_repmsg == NULL) { 934 CDEBUG(D_RPCTRACE, "request failed to send: %p, %d\n", req, 935 req->rq_status); 936 if (rc == 0) 937 rc = req->rq_status ?: -EIO; 938 } else if (rc == 0 || rc == -EAGAIN) { 939 struct mdt_body *body; 940 941 rc = lustre_msg_get_status(req->rq_repmsg); 942 if (lustre_msg_get_type(req->rq_repmsg) == PTL_RPC_MSG_ERR) { 943 DEBUG_REQ(D_ERROR, req, 944 "type == PTL_RPC_MSG_ERR, err = %d", rc); 945 if (rc > 0) 946 rc = -rc; 947 } 948 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY); 949 if (body == NULL) 950 rc = -EPROTO; 951 } else if (rc == -ESTALE) { 952 /** 953 * it can be allowed error after 3633 if open was committed and 954 * server failed before close was sent. Let's check if mod 955 * exists and return no error in that case 956 */ 957 if (mod) { 958 DEBUG_REQ(D_HA, req, "Reset ESTALE = %d", rc); 959 LASSERT(mod->mod_open_req != NULL); 960 if (mod->mod_open_req->rq_committed) 961 rc = 0; 962 } 963 } 964 965 if (mod) { 966 if (rc != 0) 967 mod->mod_close_req = NULL; 968 /* Since now, mod is accessed through open_req only, 969 * thus close req does not keep a reference on mod anymore. */ 970 obd_mod_put(mod); 971 } 972 *request = req; 973 mdc_close_handle_reply(req, op_data, rc); 974 return rc < 0 ? rc : saved_rc; 975} 976 977int mdc_done_writing(struct obd_export *exp, struct md_op_data *op_data, 978 struct md_open_data *mod) 979{ 980 struct obd_device *obd = class_exp2obd(exp); 981 struct ptlrpc_request *req; 982 int rc; 983 984 req = ptlrpc_request_alloc(class_exp2cliimp(exp), 985 &RQF_MDS_DONE_WRITING); 986 if (req == NULL) 987 return -ENOMEM; 988 989 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1); 990 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_DONE_WRITING); 991 if (rc) { 992 ptlrpc_request_free(req); 993 return rc; 994 } 995 996 if (mod != NULL) { 997 LASSERTF(mod->mod_open_req != NULL && 998 mod->mod_open_req->rq_type != LI_POISON, 999 "POISONED setattr %p!\n", mod->mod_open_req); 1000 1001 mod->mod_close_req = req; 1002 DEBUG_REQ(D_HA, mod->mod_open_req, "matched setattr"); 1003 /* We no longer want to preserve this setattr for replay even 1004 * though the open was committed. b=3632, b=3633 */ 1005 spin_lock(&mod->mod_open_req->rq_lock); 1006 mod->mod_open_req->rq_replay = 0; 1007 spin_unlock(&mod->mod_open_req->rq_lock); 1008 } 1009 1010 mdc_close_pack(req, op_data); 1011 ptlrpc_request_set_replen(req); 1012 1013 mdc_get_rpc_lock(obd->u.cli.cl_close_lock, NULL); 1014 rc = ptlrpc_queue_wait(req); 1015 mdc_put_rpc_lock(obd->u.cli.cl_close_lock, NULL); 1016 1017 if (rc == -ESTALE) { 1018 /** 1019 * it can be allowed error after 3633 if open or setattr were 1020 * committed and server failed before close was sent. 1021 * Let's check if mod exists and return no error in that case 1022 */ 1023 if (mod) { 1024 LASSERT(mod->mod_open_req != NULL); 1025 if (mod->mod_open_req->rq_committed) 1026 rc = 0; 1027 } 1028 } 1029 1030 if (mod) { 1031 if (rc != 0) 1032 mod->mod_close_req = NULL; 1033 LASSERT(mod->mod_open_req != NULL); 1034 mdc_free_open(mod); 1035 1036 /* Since now, mod is accessed through setattr req only, 1037 * thus DW req does not keep a reference on mod anymore. */ 1038 obd_mod_put(mod); 1039 } 1040 1041 mdc_close_handle_reply(req, op_data, rc); 1042 ptlrpc_req_finished(req); 1043 return rc; 1044} 1045 1046 1047int mdc_readpage(struct obd_export *exp, struct md_op_data *op_data, 1048 struct page **pages, struct ptlrpc_request **request) 1049{ 1050 struct ptlrpc_request *req; 1051 struct ptlrpc_bulk_desc *desc; 1052 int i; 1053 wait_queue_head_t waitq; 1054 int resends = 0; 1055 struct l_wait_info lwi; 1056 int rc; 1057 1058 *request = NULL; 1059 init_waitqueue_head(&waitq); 1060 1061restart_bulk: 1062 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_READPAGE); 1063 if (req == NULL) 1064 return -ENOMEM; 1065 1066 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1); 1067 1068 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_READPAGE); 1069 if (rc) { 1070 ptlrpc_request_free(req); 1071 return rc; 1072 } 1073 1074 req->rq_request_portal = MDS_READPAGE_PORTAL; 1075 ptlrpc_at_set_req_timeout(req); 1076 1077 desc = ptlrpc_prep_bulk_imp(req, op_data->op_npages, 1, BULK_PUT_SINK, 1078 MDS_BULK_PORTAL); 1079 if (desc == NULL) { 1080 ptlrpc_request_free(req); 1081 return -ENOMEM; 1082 } 1083 1084 /* NB req now owns desc and will free it when it gets freed */ 1085 for (i = 0; i < op_data->op_npages; i++) 1086 ptlrpc_prep_bulk_page_pin(desc, pages[i], 0, PAGE_CACHE_SIZE); 1087 1088 mdc_readdir_pack(req, op_data->op_offset, 1089 PAGE_CACHE_SIZE * op_data->op_npages, 1090 &op_data->op_fid1, op_data->op_capa1); 1091 1092 ptlrpc_request_set_replen(req); 1093 rc = ptlrpc_queue_wait(req); 1094 if (rc) { 1095 ptlrpc_req_finished(req); 1096 if (rc != -ETIMEDOUT) 1097 return rc; 1098 1099 resends++; 1100 if (!client_should_resend(resends, &exp->exp_obd->u.cli)) { 1101 CERROR("too many resend retries, returning error\n"); 1102 return -EIO; 1103 } 1104 lwi = LWI_TIMEOUT_INTR(cfs_time_seconds(resends), 1105 NULL, NULL, NULL); 1106 l_wait_event(waitq, 0, &lwi); 1107 1108 goto restart_bulk; 1109 } 1110 1111 rc = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk, 1112 req->rq_bulk->bd_nob_transferred); 1113 if (rc < 0) { 1114 ptlrpc_req_finished(req); 1115 return rc; 1116 } 1117 1118 if (req->rq_bulk->bd_nob_transferred & ~LU_PAGE_MASK) { 1119 CERROR("Unexpected # bytes transferred: %d (%ld expected)\n", 1120 req->rq_bulk->bd_nob_transferred, 1121 PAGE_CACHE_SIZE * op_data->op_npages); 1122 ptlrpc_req_finished(req); 1123 return -EPROTO; 1124 } 1125 1126 *request = req; 1127 return 0; 1128} 1129 1130static int mdc_statfs(const struct lu_env *env, 1131 struct obd_export *exp, struct obd_statfs *osfs, 1132 __u64 max_age, __u32 flags) 1133{ 1134 struct obd_device *obd = class_exp2obd(exp); 1135 struct ptlrpc_request *req; 1136 struct obd_statfs *msfs; 1137 struct obd_import *imp = NULL; 1138 int rc; 1139 1140 /* 1141 * Since the request might also come from lprocfs, so we need 1142 * sync this with client_disconnect_export Bug15684 1143 */ 1144 down_read(&obd->u.cli.cl_sem); 1145 if (obd->u.cli.cl_import) 1146 imp = class_import_get(obd->u.cli.cl_import); 1147 up_read(&obd->u.cli.cl_sem); 1148 if (!imp) 1149 return -ENODEV; 1150 1151 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_STATFS, 1152 LUSTRE_MDS_VERSION, MDS_STATFS); 1153 if (req == NULL) { 1154 rc = -ENOMEM; 1155 goto output; 1156 } 1157 1158 ptlrpc_request_set_replen(req); 1159 1160 if (flags & OBD_STATFS_NODELAY) { 1161 /* procfs requests not want stay in wait for avoid deadlock */ 1162 req->rq_no_resend = 1; 1163 req->rq_no_delay = 1; 1164 } 1165 1166 rc = ptlrpc_queue_wait(req); 1167 if (rc) { 1168 /* check connection error first */ 1169 if (imp->imp_connect_error) 1170 rc = imp->imp_connect_error; 1171 goto out; 1172 } 1173 1174 msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS); 1175 if (msfs == NULL) { 1176 rc = -EPROTO; 1177 goto out; 1178 } 1179 1180 *osfs = *msfs; 1181out: 1182 ptlrpc_req_finished(req); 1183output: 1184 class_import_put(imp); 1185 return rc; 1186} 1187 1188static int mdc_ioc_fid2path(struct obd_export *exp, struct getinfo_fid2path *gf) 1189{ 1190 __u32 keylen, vallen; 1191 void *key; 1192 int rc; 1193 1194 if (gf->gf_pathlen > PATH_MAX) 1195 return -ENAMETOOLONG; 1196 if (gf->gf_pathlen < 2) 1197 return -EOVERFLOW; 1198 1199 /* Key is KEY_FID2PATH + getinfo_fid2path description */ 1200 keylen = cfs_size_round(sizeof(KEY_FID2PATH)) + sizeof(*gf); 1201 OBD_ALLOC(key, keylen); 1202 if (key == NULL) 1203 return -ENOMEM; 1204 memcpy(key, KEY_FID2PATH, sizeof(KEY_FID2PATH)); 1205 memcpy(key + cfs_size_round(sizeof(KEY_FID2PATH)), gf, sizeof(*gf)); 1206 1207 CDEBUG(D_IOCTL, "path get "DFID" from %llu #%d\n", 1208 PFID(&gf->gf_fid), gf->gf_recno, gf->gf_linkno); 1209 1210 if (!fid_is_sane(&gf->gf_fid)) { 1211 rc = -EINVAL; 1212 goto out; 1213 } 1214 1215 /* Val is struct getinfo_fid2path result plus path */ 1216 vallen = sizeof(*gf) + gf->gf_pathlen; 1217 1218 rc = obd_get_info(NULL, exp, keylen, key, &vallen, gf, NULL); 1219 if (rc != 0 && rc != -EREMOTE) 1220 goto out; 1221 1222 if (vallen <= sizeof(*gf)) { 1223 rc = -EPROTO; 1224 goto out; 1225 } else if (vallen > sizeof(*gf) + gf->gf_pathlen) { 1226 rc = -EOVERFLOW; 1227 goto out; 1228 } 1229 1230 CDEBUG(D_IOCTL, "path get "DFID" from %llu #%d\n%s\n", 1231 PFID(&gf->gf_fid), gf->gf_recno, gf->gf_linkno, gf->gf_path); 1232 1233out: 1234 OBD_FREE(key, keylen); 1235 return rc; 1236} 1237 1238static int mdc_ioc_hsm_progress(struct obd_export *exp, 1239 struct hsm_progress_kernel *hpk) 1240{ 1241 struct obd_import *imp = class_exp2cliimp(exp); 1242 struct hsm_progress_kernel *req_hpk; 1243 struct ptlrpc_request *req; 1244 int rc; 1245 1246 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_PROGRESS, 1247 LUSTRE_MDS_VERSION, MDS_HSM_PROGRESS); 1248 if (req == NULL) { 1249 rc = -ENOMEM; 1250 goto out; 1251 } 1252 1253 mdc_pack_body(req, NULL, NULL, OBD_MD_FLRMTPERM, 0, 0, 0); 1254 1255 /* Copy hsm_progress struct */ 1256 req_hpk = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_PROGRESS); 1257 if (req_hpk == NULL) { 1258 rc = -EPROTO; 1259 goto out; 1260 } 1261 1262 *req_hpk = *hpk; 1263 req_hpk->hpk_errval = lustre_errno_hton(hpk->hpk_errval); 1264 1265 ptlrpc_request_set_replen(req); 1266 1267 rc = mdc_queue_wait(req); 1268 goto out; 1269out: 1270 ptlrpc_req_finished(req); 1271 return rc; 1272} 1273 1274static int mdc_ioc_hsm_ct_register(struct obd_import *imp, __u32 archives) 1275{ 1276 __u32 *archive_mask; 1277 struct ptlrpc_request *req; 1278 int rc; 1279 1280 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_CT_REGISTER, 1281 LUSTRE_MDS_VERSION, 1282 MDS_HSM_CT_REGISTER); 1283 if (req == NULL) { 1284 rc = -ENOMEM; 1285 goto out; 1286 } 1287 1288 mdc_pack_body(req, NULL, NULL, OBD_MD_FLRMTPERM, 0, 0, 0); 1289 1290 /* Copy hsm_progress struct */ 1291 archive_mask = req_capsule_client_get(&req->rq_pill, 1292 &RMF_MDS_HSM_ARCHIVE); 1293 if (archive_mask == NULL) { 1294 rc = -EPROTO; 1295 goto out; 1296 } 1297 1298 *archive_mask = archives; 1299 1300 ptlrpc_request_set_replen(req); 1301 1302 rc = mdc_queue_wait(req); 1303 goto out; 1304out: 1305 ptlrpc_req_finished(req); 1306 return rc; 1307} 1308 1309static int mdc_ioc_hsm_current_action(struct obd_export *exp, 1310 struct md_op_data *op_data) 1311{ 1312 struct hsm_current_action *hca = op_data->op_data; 1313 struct hsm_current_action *req_hca; 1314 struct ptlrpc_request *req; 1315 int rc; 1316 1317 req = ptlrpc_request_alloc(class_exp2cliimp(exp), 1318 &RQF_MDS_HSM_ACTION); 1319 if (req == NULL) 1320 return -ENOMEM; 1321 1322 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1); 1323 1324 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_ACTION); 1325 if (rc) { 1326 ptlrpc_request_free(req); 1327 return rc; 1328 } 1329 1330 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1, 1331 OBD_MD_FLRMTPERM, 0, op_data->op_suppgids[0], 0); 1332 1333 ptlrpc_request_set_replen(req); 1334 1335 rc = mdc_queue_wait(req); 1336 if (rc) 1337 goto out; 1338 1339 req_hca = req_capsule_server_get(&req->rq_pill, 1340 &RMF_MDS_HSM_CURRENT_ACTION); 1341 if (req_hca == NULL) { 1342 rc = -EPROTO; 1343 goto out; 1344 } 1345 1346 *hca = *req_hca; 1347 1348out: 1349 ptlrpc_req_finished(req); 1350 return rc; 1351} 1352 1353static int mdc_ioc_hsm_ct_unregister(struct obd_import *imp) 1354{ 1355 struct ptlrpc_request *req; 1356 int rc; 1357 1358 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_CT_UNREGISTER, 1359 LUSTRE_MDS_VERSION, 1360 MDS_HSM_CT_UNREGISTER); 1361 if (req == NULL) { 1362 rc = -ENOMEM; 1363 goto out; 1364 } 1365 1366 mdc_pack_body(req, NULL, NULL, OBD_MD_FLRMTPERM, 0, 0, 0); 1367 1368 ptlrpc_request_set_replen(req); 1369 1370 rc = mdc_queue_wait(req); 1371 goto out; 1372out: 1373 ptlrpc_req_finished(req); 1374 return rc; 1375} 1376 1377static int mdc_ioc_hsm_state_get(struct obd_export *exp, 1378 struct md_op_data *op_data) 1379{ 1380 struct hsm_user_state *hus = op_data->op_data; 1381 struct hsm_user_state *req_hus; 1382 struct ptlrpc_request *req; 1383 int rc; 1384 1385 req = ptlrpc_request_alloc(class_exp2cliimp(exp), 1386 &RQF_MDS_HSM_STATE_GET); 1387 if (req == NULL) 1388 return -ENOMEM; 1389 1390 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1); 1391 1392 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_STATE_GET); 1393 if (rc != 0) { 1394 ptlrpc_request_free(req); 1395 return rc; 1396 } 1397 1398 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1, 1399 OBD_MD_FLRMTPERM, 0, op_data->op_suppgids[0], 0); 1400 1401 ptlrpc_request_set_replen(req); 1402 1403 rc = mdc_queue_wait(req); 1404 if (rc) 1405 goto out; 1406 1407 req_hus = req_capsule_server_get(&req->rq_pill, &RMF_HSM_USER_STATE); 1408 if (req_hus == NULL) { 1409 rc = -EPROTO; 1410 goto out; 1411 } 1412 1413 *hus = *req_hus; 1414 1415out: 1416 ptlrpc_req_finished(req); 1417 return rc; 1418} 1419 1420static int mdc_ioc_hsm_state_set(struct obd_export *exp, 1421 struct md_op_data *op_data) 1422{ 1423 struct hsm_state_set *hss = op_data->op_data; 1424 struct hsm_state_set *req_hss; 1425 struct ptlrpc_request *req; 1426 int rc; 1427 1428 req = ptlrpc_request_alloc(class_exp2cliimp(exp), 1429 &RQF_MDS_HSM_STATE_SET); 1430 if (req == NULL) 1431 return -ENOMEM; 1432 1433 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1); 1434 1435 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_STATE_SET); 1436 if (rc) { 1437 ptlrpc_request_free(req); 1438 return rc; 1439 } 1440 1441 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1, 1442 OBD_MD_FLRMTPERM, 0, op_data->op_suppgids[0], 0); 1443 1444 /* Copy states */ 1445 req_hss = req_capsule_client_get(&req->rq_pill, &RMF_HSM_STATE_SET); 1446 if (req_hss == NULL) { 1447 rc = -EPROTO; 1448 goto out; 1449 } 1450 *req_hss = *hss; 1451 1452 ptlrpc_request_set_replen(req); 1453 1454 rc = mdc_queue_wait(req); 1455 goto out; 1456 1457out: 1458 ptlrpc_req_finished(req); 1459 return rc; 1460} 1461 1462static int mdc_ioc_hsm_request(struct obd_export *exp, 1463 struct hsm_user_request *hur) 1464{ 1465 struct obd_import *imp = class_exp2cliimp(exp); 1466 struct ptlrpc_request *req; 1467 struct hsm_request *req_hr; 1468 struct hsm_user_item *req_hui; 1469 char *req_opaque; 1470 int rc; 1471 1472 req = ptlrpc_request_alloc(imp, &RQF_MDS_HSM_REQUEST); 1473 if (req == NULL) { 1474 rc = -ENOMEM; 1475 goto out; 1476 } 1477 1478 req_capsule_set_size(&req->rq_pill, &RMF_MDS_HSM_USER_ITEM, RCL_CLIENT, 1479 hur->hur_request.hr_itemcount 1480 * sizeof(struct hsm_user_item)); 1481 req_capsule_set_size(&req->rq_pill, &RMF_GENERIC_DATA, RCL_CLIENT, 1482 hur->hur_request.hr_data_len); 1483 1484 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_REQUEST); 1485 if (rc) { 1486 ptlrpc_request_free(req); 1487 return rc; 1488 } 1489 1490 mdc_pack_body(req, NULL, NULL, OBD_MD_FLRMTPERM, 0, 0, 0); 1491 1492 /* Copy hsm_request struct */ 1493 req_hr = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_REQUEST); 1494 if (req_hr == NULL) { 1495 rc = -EPROTO; 1496 goto out; 1497 } 1498 *req_hr = hur->hur_request; 1499 1500 /* Copy hsm_user_item structs */ 1501 req_hui = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_USER_ITEM); 1502 if (req_hui == NULL) { 1503 rc = -EPROTO; 1504 goto out; 1505 } 1506 memcpy(req_hui, hur->hur_user_item, 1507 hur->hur_request.hr_itemcount * sizeof(struct hsm_user_item)); 1508 1509 /* Copy opaque field */ 1510 req_opaque = req_capsule_client_get(&req->rq_pill, &RMF_GENERIC_DATA); 1511 if (req_opaque == NULL) { 1512 rc = -EPROTO; 1513 goto out; 1514 } 1515 memcpy(req_opaque, hur_data(hur), hur->hur_request.hr_data_len); 1516 1517 ptlrpc_request_set_replen(req); 1518 1519 rc = mdc_queue_wait(req); 1520 goto out; 1521 1522out: 1523 ptlrpc_req_finished(req); 1524 return rc; 1525} 1526 1527static struct kuc_hdr *changelog_kuc_hdr(char *buf, int len, int flags) 1528{ 1529 struct kuc_hdr *lh = (struct kuc_hdr *)buf; 1530 1531 LASSERT(len <= KUC_CHANGELOG_MSG_MAXSIZE); 1532 1533 lh->kuc_magic = KUC_MAGIC; 1534 lh->kuc_transport = KUC_TRANSPORT_CHANGELOG; 1535 lh->kuc_flags = flags; 1536 lh->kuc_msgtype = CL_RECORD; 1537 lh->kuc_msglen = len; 1538 return lh; 1539} 1540 1541#define D_CHANGELOG 0 1542 1543struct changelog_show { 1544 __u64 cs_startrec; 1545 __u32 cs_flags; 1546 struct file *cs_fp; 1547 char *cs_buf; 1548 struct obd_device *cs_obd; 1549}; 1550 1551static int changelog_kkuc_cb(const struct lu_env *env, struct llog_handle *llh, 1552 struct llog_rec_hdr *hdr, void *data) 1553{ 1554 struct changelog_show *cs = data; 1555 struct llog_changelog_rec *rec = (struct llog_changelog_rec *)hdr; 1556 struct kuc_hdr *lh; 1557 int len, rc; 1558 1559 if (rec->cr_hdr.lrh_type != CHANGELOG_REC) { 1560 rc = -EINVAL; 1561 CERROR("%s: not a changelog rec %x/%d: rc = %d\n", 1562 cs->cs_obd->obd_name, rec->cr_hdr.lrh_type, 1563 rec->cr.cr_type, rc); 1564 return rc; 1565 } 1566 1567 if (rec->cr.cr_index < cs->cs_startrec) { 1568 /* Skip entries earlier than what we are interested in */ 1569 CDEBUG(D_CHANGELOG, "rec=%llu start=%llu\n", 1570 rec->cr.cr_index, cs->cs_startrec); 1571 return 0; 1572 } 1573 1574 CDEBUG(D_CHANGELOG, "%llu %02d%-5s %llu 0x%x t="DFID" p="DFID 1575 " %.*s\n", rec->cr.cr_index, rec->cr.cr_type, 1576 changelog_type2str(rec->cr.cr_type), rec->cr.cr_time, 1577 rec->cr.cr_flags & CLF_FLAGMASK, 1578 PFID(&rec->cr.cr_tfid), PFID(&rec->cr.cr_pfid), 1579 rec->cr.cr_namelen, changelog_rec_name(&rec->cr)); 1580 1581 len = sizeof(*lh) + changelog_rec_size(&rec->cr) + rec->cr.cr_namelen; 1582 1583 /* Set up the message */ 1584 lh = changelog_kuc_hdr(cs->cs_buf, len, cs->cs_flags); 1585 memcpy(lh + 1, &rec->cr, len - sizeof(*lh)); 1586 1587 rc = libcfs_kkuc_msg_put(cs->cs_fp, lh); 1588 CDEBUG(D_CHANGELOG, "kucmsg fp %p len %d rc %d\n", cs->cs_fp, len, rc); 1589 1590 return rc; 1591} 1592 1593static int mdc_changelog_send_thread(void *csdata) 1594{ 1595 struct changelog_show *cs = csdata; 1596 struct llog_ctxt *ctxt = NULL; 1597 struct llog_handle *llh = NULL; 1598 struct kuc_hdr *kuch; 1599 int rc; 1600 1601 CDEBUG(D_CHANGELOG, "changelog to fp=%p start %llu\n", 1602 cs->cs_fp, cs->cs_startrec); 1603 1604 OBD_ALLOC(cs->cs_buf, KUC_CHANGELOG_MSG_MAXSIZE); 1605 if (cs->cs_buf == NULL) { 1606 rc = -ENOMEM; 1607 goto out; 1608 } 1609 1610 /* Set up the remote catalog handle */ 1611 ctxt = llog_get_context(cs->cs_obd, LLOG_CHANGELOG_REPL_CTXT); 1612 if (ctxt == NULL) { 1613 rc = -ENOENT; 1614 goto out; 1615 } 1616 rc = llog_open(NULL, ctxt, &llh, NULL, CHANGELOG_CATALOG, 1617 LLOG_OPEN_EXISTS); 1618 if (rc) { 1619 CERROR("%s: fail to open changelog catalog: rc = %d\n", 1620 cs->cs_obd->obd_name, rc); 1621 goto out; 1622 } 1623 rc = llog_init_handle(NULL, llh, LLOG_F_IS_CAT, NULL); 1624 if (rc) { 1625 CERROR("llog_init_handle failed %d\n", rc); 1626 goto out; 1627 } 1628 1629 rc = llog_cat_process(NULL, llh, changelog_kkuc_cb, cs, 0, 0); 1630 1631 /* Send EOF no matter what our result */ 1632 kuch = changelog_kuc_hdr(cs->cs_buf, sizeof(*kuch), cs->cs_flags); 1633 if (kuch) { 1634 kuch->kuc_msgtype = CL_EOF; 1635 libcfs_kkuc_msg_put(cs->cs_fp, kuch); 1636 } 1637 1638out: 1639 fput(cs->cs_fp); 1640 if (llh) 1641 llog_cat_close(NULL, llh); 1642 if (ctxt) 1643 llog_ctxt_put(ctxt); 1644 if (cs->cs_buf) 1645 OBD_FREE(cs->cs_buf, KUC_CHANGELOG_MSG_MAXSIZE); 1646 OBD_FREE_PTR(cs); 1647 return rc; 1648} 1649 1650static int mdc_ioc_changelog_send(struct obd_device *obd, 1651 struct ioc_changelog *icc) 1652{ 1653 struct changelog_show *cs; 1654 int rc; 1655 1656 /* Freed in mdc_changelog_send_thread */ 1657 OBD_ALLOC_PTR(cs); 1658 if (!cs) 1659 return -ENOMEM; 1660 1661 cs->cs_obd = obd; 1662 cs->cs_startrec = icc->icc_recno; 1663 /* matching fput in mdc_changelog_send_thread */ 1664 cs->cs_fp = fget(icc->icc_id); 1665 cs->cs_flags = icc->icc_flags; 1666 1667 /* 1668 * New thread because we should return to user app before 1669 * writing into our pipe 1670 */ 1671 rc = PTR_ERR(kthread_run(mdc_changelog_send_thread, cs, 1672 "mdc_clg_send_thread")); 1673 if (!IS_ERR_VALUE(rc)) { 1674 CDEBUG(D_CHANGELOG, "start changelog thread\n"); 1675 return 0; 1676 } 1677 1678 CERROR("Failed to start changelog thread: %d\n", rc); 1679 OBD_FREE_PTR(cs); 1680 return rc; 1681} 1682 1683static int mdc_ioc_hsm_ct_start(struct obd_export *exp, 1684 struct lustre_kernelcomm *lk); 1685 1686static int mdc_quotacheck(struct obd_device *unused, struct obd_export *exp, 1687 struct obd_quotactl *oqctl) 1688{ 1689 struct client_obd *cli = &exp->exp_obd->u.cli; 1690 struct ptlrpc_request *req; 1691 struct obd_quotactl *body; 1692 int rc; 1693 1694 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), 1695 &RQF_MDS_QUOTACHECK, LUSTRE_MDS_VERSION, 1696 MDS_QUOTACHECK); 1697 if (req == NULL) 1698 return -ENOMEM; 1699 1700 body = req_capsule_client_get(&req->rq_pill, &RMF_OBD_QUOTACTL); 1701 *body = *oqctl; 1702 1703 ptlrpc_request_set_replen(req); 1704 1705 /* the next poll will find -ENODATA, that means quotacheck is 1706 * going on */ 1707 cli->cl_qchk_stat = -ENODATA; 1708 rc = ptlrpc_queue_wait(req); 1709 if (rc) 1710 cli->cl_qchk_stat = rc; 1711 ptlrpc_req_finished(req); 1712 return rc; 1713} 1714 1715static int mdc_quota_poll_check(struct obd_export *exp, 1716 struct if_quotacheck *qchk) 1717{ 1718 struct client_obd *cli = &exp->exp_obd->u.cli; 1719 int rc; 1720 1721 qchk->obd_uuid = cli->cl_target_uuid; 1722 memcpy(qchk->obd_type, LUSTRE_MDS_NAME, strlen(LUSTRE_MDS_NAME)); 1723 1724 rc = cli->cl_qchk_stat; 1725 /* the client is not the previous one */ 1726 if (rc == CL_NOT_QUOTACHECKED) 1727 rc = -EINTR; 1728 return rc; 1729} 1730 1731static int mdc_quotactl(struct obd_device *unused, struct obd_export *exp, 1732 struct obd_quotactl *oqctl) 1733{ 1734 struct ptlrpc_request *req; 1735 struct obd_quotactl *oqc; 1736 int rc; 1737 1738 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), 1739 &RQF_MDS_QUOTACTL, LUSTRE_MDS_VERSION, 1740 MDS_QUOTACTL); 1741 if (req == NULL) 1742 return -ENOMEM; 1743 1744 oqc = req_capsule_client_get(&req->rq_pill, &RMF_OBD_QUOTACTL); 1745 *oqc = *oqctl; 1746 1747 ptlrpc_request_set_replen(req); 1748 ptlrpc_at_set_req_timeout(req); 1749 req->rq_no_resend = 1; 1750 1751 rc = ptlrpc_queue_wait(req); 1752 if (rc) 1753 CERROR("ptlrpc_queue_wait failed, rc: %d\n", rc); 1754 1755 if (req->rq_repmsg) { 1756 oqc = req_capsule_server_get(&req->rq_pill, &RMF_OBD_QUOTACTL); 1757 if (oqc) { 1758 *oqctl = *oqc; 1759 } else if (!rc) { 1760 CERROR("Can't unpack obd_quotactl\n"); 1761 rc = -EPROTO; 1762 } 1763 } else if (!rc) { 1764 CERROR("Can't unpack obd_quotactl\n"); 1765 rc = -EPROTO; 1766 } 1767 ptlrpc_req_finished(req); 1768 1769 return rc; 1770} 1771 1772static int mdc_ioc_swap_layouts(struct obd_export *exp, 1773 struct md_op_data *op_data) 1774{ 1775 LIST_HEAD(cancels); 1776 struct ptlrpc_request *req; 1777 int rc, count; 1778 struct mdc_swap_layouts *msl, *payload; 1779 1780 msl = op_data->op_data; 1781 1782 /* When the MDT will get the MDS_SWAP_LAYOUTS RPC the 1783 * first thing it will do is to cancel the 2 layout 1784 * locks hold by this client. 1785 * So the client must cancel its layout locks on the 2 fids 1786 * with the request RPC to avoid extra RPC round trips 1787 */ 1788 count = mdc_resource_get_unused(exp, &op_data->op_fid1, &cancels, 1789 LCK_CR, MDS_INODELOCK_LAYOUT); 1790 count += mdc_resource_get_unused(exp, &op_data->op_fid2, &cancels, 1791 LCK_CR, MDS_INODELOCK_LAYOUT); 1792 1793 req = ptlrpc_request_alloc(class_exp2cliimp(exp), 1794 &RQF_MDS_SWAP_LAYOUTS); 1795 if (req == NULL) { 1796 ldlm_lock_list_put(&cancels, l_bl_ast, count); 1797 return -ENOMEM; 1798 } 1799 1800 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1); 1801 mdc_set_capa_size(req, &RMF_CAPA2, op_data->op_capa2); 1802 1803 rc = mdc_prep_elc_req(exp, req, MDS_SWAP_LAYOUTS, &cancels, count); 1804 if (rc) { 1805 ptlrpc_request_free(req); 1806 return rc; 1807 } 1808 1809 mdc_swap_layouts_pack(req, op_data); 1810 1811 payload = req_capsule_client_get(&req->rq_pill, &RMF_SWAP_LAYOUTS); 1812 LASSERT(payload); 1813 1814 *payload = *msl; 1815 1816 ptlrpc_request_set_replen(req); 1817 1818 rc = ptlrpc_queue_wait(req); 1819 if (rc) 1820 goto out; 1821 1822out: 1823 ptlrpc_req_finished(req); 1824 return rc; 1825} 1826 1827static int mdc_iocontrol(unsigned int cmd, struct obd_export *exp, int len, 1828 void *karg, void *uarg) 1829{ 1830 struct obd_device *obd = exp->exp_obd; 1831 struct obd_ioctl_data *data = karg; 1832 struct obd_import *imp = obd->u.cli.cl_import; 1833 int rc; 1834 1835 if (!try_module_get(THIS_MODULE)) { 1836 CERROR("Can't get module. Is it alive?"); 1837 return -EINVAL; 1838 } 1839 switch (cmd) { 1840 case OBD_IOC_CHANGELOG_SEND: 1841 rc = mdc_ioc_changelog_send(obd, karg); 1842 goto out; 1843 case OBD_IOC_CHANGELOG_CLEAR: { 1844 struct ioc_changelog *icc = karg; 1845 struct changelog_setinfo cs = { 1846 .cs_recno = icc->icc_recno, 1847 .cs_id = icc->icc_id 1848 }; 1849 1850 rc = obd_set_info_async(NULL, exp, strlen(KEY_CHANGELOG_CLEAR), 1851 KEY_CHANGELOG_CLEAR, sizeof(cs), &cs, 1852 NULL); 1853 goto out; 1854 } 1855 case OBD_IOC_FID2PATH: 1856 rc = mdc_ioc_fid2path(exp, karg); 1857 goto out; 1858 case LL_IOC_HSM_CT_START: 1859 rc = mdc_ioc_hsm_ct_start(exp, karg); 1860 /* ignore if it was already registered on this MDS. */ 1861 if (rc == -EEXIST) 1862 rc = 0; 1863 goto out; 1864 case LL_IOC_HSM_PROGRESS: 1865 rc = mdc_ioc_hsm_progress(exp, karg); 1866 goto out; 1867 case LL_IOC_HSM_STATE_GET: 1868 rc = mdc_ioc_hsm_state_get(exp, karg); 1869 goto out; 1870 case LL_IOC_HSM_STATE_SET: 1871 rc = mdc_ioc_hsm_state_set(exp, karg); 1872 goto out; 1873 case LL_IOC_HSM_ACTION: 1874 rc = mdc_ioc_hsm_current_action(exp, karg); 1875 goto out; 1876 case LL_IOC_HSM_REQUEST: 1877 rc = mdc_ioc_hsm_request(exp, karg); 1878 goto out; 1879 case OBD_IOC_CLIENT_RECOVER: 1880 rc = ptlrpc_recover_import(imp, data->ioc_inlbuf1, 0); 1881 if (rc < 0) 1882 goto out; 1883 rc = 0; 1884 goto out; 1885 case IOC_OSC_SET_ACTIVE: 1886 rc = ptlrpc_set_import_active(imp, data->ioc_offset); 1887 goto out; 1888 case OBD_IOC_POLL_QUOTACHECK: 1889 rc = mdc_quota_poll_check(exp, (struct if_quotacheck *)karg); 1890 goto out; 1891 case OBD_IOC_PING_TARGET: 1892 rc = ptlrpc_obd_ping(obd); 1893 goto out; 1894 /* 1895 * Normally IOC_OBD_STATFS, OBD_IOC_QUOTACTL iocontrol are handled by 1896 * LMV instead of MDC. But when the cluster is upgraded from 1.8, 1897 * there'd be no LMV layer thus we might be called here. Eventually 1898 * this code should be removed. 1899 * bz20731, LU-592. 1900 */ 1901 case IOC_OBD_STATFS: { 1902 struct obd_statfs stat_buf = {0}; 1903 1904 if (*((__u32 *) data->ioc_inlbuf2) != 0) { 1905 rc = -ENODEV; 1906 goto out; 1907 } 1908 1909 /* copy UUID */ 1910 if (copy_to_user(data->ioc_pbuf2, obd2cli_tgt(obd), 1911 min((int) data->ioc_plen2, 1912 (int) sizeof(struct obd_uuid)))) { 1913 rc = -EFAULT; 1914 goto out; 1915 } 1916 1917 rc = mdc_statfs(NULL, obd->obd_self_export, &stat_buf, 1918 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS), 1919 0); 1920 if (rc != 0) 1921 goto out; 1922 1923 if (copy_to_user(data->ioc_pbuf1, &stat_buf, 1924 min((int) data->ioc_plen1, 1925 (int) sizeof(stat_buf)))) { 1926 rc = -EFAULT; 1927 goto out; 1928 } 1929 1930 rc = 0; 1931 goto out; 1932 } 1933 case OBD_IOC_QUOTACTL: { 1934 struct if_quotactl *qctl = karg; 1935 struct obd_quotactl *oqctl; 1936 1937 OBD_ALLOC_PTR(oqctl); 1938 if (oqctl == NULL) { 1939 rc = -ENOMEM; 1940 goto out; 1941 } 1942 1943 QCTL_COPY(oqctl, qctl); 1944 rc = obd_quotactl(exp, oqctl); 1945 if (rc == 0) { 1946 QCTL_COPY(qctl, oqctl); 1947 qctl->qc_valid = QC_MDTIDX; 1948 qctl->obd_uuid = obd->u.cli.cl_target_uuid; 1949 } 1950 1951 OBD_FREE_PTR(oqctl); 1952 goto out; 1953 } 1954 case LL_IOC_GET_CONNECT_FLAGS: 1955 if (copy_to_user(uarg, exp_connect_flags_ptr(exp), 1956 sizeof(*exp_connect_flags_ptr(exp)))) { 1957 rc = -EFAULT; 1958 goto out; 1959 } 1960 1961 rc = 0; 1962 goto out; 1963 case LL_IOC_LOV_SWAP_LAYOUTS: 1964 rc = mdc_ioc_swap_layouts(exp, karg); 1965 goto out; 1966 default: 1967 CERROR("unrecognised ioctl: cmd = %#x\n", cmd); 1968 rc = -ENOTTY; 1969 goto out; 1970 } 1971out: 1972 module_put(THIS_MODULE); 1973 1974 return rc; 1975} 1976 1977int mdc_get_info_rpc(struct obd_export *exp, 1978 u32 keylen, void *key, 1979 int vallen, void *val) 1980{ 1981 struct obd_import *imp = class_exp2cliimp(exp); 1982 struct ptlrpc_request *req; 1983 char *tmp; 1984 int rc = -EINVAL; 1985 1986 req = ptlrpc_request_alloc(imp, &RQF_MDS_GET_INFO); 1987 if (req == NULL) 1988 return -ENOMEM; 1989 1990 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_KEY, 1991 RCL_CLIENT, keylen); 1992 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_VALLEN, 1993 RCL_CLIENT, sizeof(__u32)); 1994 1995 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GET_INFO); 1996 if (rc) { 1997 ptlrpc_request_free(req); 1998 return rc; 1999 } 2000 2001 tmp = req_capsule_client_get(&req->rq_pill, &RMF_GETINFO_KEY); 2002 memcpy(tmp, key, keylen); 2003 tmp = req_capsule_client_get(&req->rq_pill, &RMF_GETINFO_VALLEN); 2004 memcpy(tmp, &vallen, sizeof(__u32)); 2005 2006 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_VAL, 2007 RCL_SERVER, vallen); 2008 ptlrpc_request_set_replen(req); 2009 2010 rc = ptlrpc_queue_wait(req); 2011 /* -EREMOTE means the get_info result is partial, and it needs to 2012 * continue on another MDT, see fid2path part in lmv_iocontrol */ 2013 if (rc == 0 || rc == -EREMOTE) { 2014 tmp = req_capsule_server_get(&req->rq_pill, &RMF_GETINFO_VAL); 2015 memcpy(val, tmp, vallen); 2016 if (ptlrpc_rep_need_swab(req)) { 2017 if (KEY_IS(KEY_FID2PATH)) 2018 lustre_swab_fid2path(val); 2019 } 2020 } 2021 ptlrpc_req_finished(req); 2022 2023 return rc; 2024} 2025 2026static void lustre_swab_hai(struct hsm_action_item *h) 2027{ 2028 __swab32s(&h->hai_len); 2029 __swab32s(&h->hai_action); 2030 lustre_swab_lu_fid(&h->hai_fid); 2031 lustre_swab_lu_fid(&h->hai_dfid); 2032 __swab64s(&h->hai_cookie); 2033 __swab64s(&h->hai_extent.offset); 2034 __swab64s(&h->hai_extent.length); 2035 __swab64s(&h->hai_gid); 2036} 2037 2038static void lustre_swab_hal(struct hsm_action_list *h) 2039{ 2040 struct hsm_action_item *hai; 2041 int i; 2042 2043 __swab32s(&h->hal_version); 2044 __swab32s(&h->hal_count); 2045 __swab32s(&h->hal_archive_id); 2046 __swab64s(&h->hal_flags); 2047 hai = hai_zero(h); 2048 for (i = 0; i < h->hal_count; i++, hai = hai_next(hai)) 2049 lustre_swab_hai(hai); 2050} 2051 2052static void lustre_swab_kuch(struct kuc_hdr *l) 2053{ 2054 __swab16s(&l->kuc_magic); 2055 /* __u8 l->kuc_transport */ 2056 __swab16s(&l->kuc_msgtype); 2057 __swab16s(&l->kuc_msglen); 2058} 2059 2060static int mdc_ioc_hsm_ct_start(struct obd_export *exp, 2061 struct lustre_kernelcomm *lk) 2062{ 2063 struct obd_import *imp = class_exp2cliimp(exp); 2064 __u32 archive = lk->lk_data; 2065 int rc = 0; 2066 2067 if (lk->lk_group != KUC_GRP_HSM) { 2068 CERROR("Bad copytool group %d\n", lk->lk_group); 2069 return -EINVAL; 2070 } 2071 2072 CDEBUG(D_HSM, "CT start r%d w%d u%d g%d f%#x\n", lk->lk_rfd, lk->lk_wfd, 2073 lk->lk_uid, lk->lk_group, lk->lk_flags); 2074 2075 if (lk->lk_flags & LK_FLG_STOP) { 2076 /* Unregister with the coordinator */ 2077 rc = mdc_ioc_hsm_ct_unregister(imp); 2078 } else { 2079 rc = mdc_ioc_hsm_ct_register(imp, archive); 2080 } 2081 2082 return rc; 2083} 2084 2085/** 2086 * Send a message to any listening copytools 2087 * @param val KUC message (kuc_hdr + hsm_action_list) 2088 * @param len total length of message 2089 */ 2090static int mdc_hsm_copytool_send(int len, void *val) 2091{ 2092 struct kuc_hdr *lh = (struct kuc_hdr *)val; 2093 struct hsm_action_list *hal = (struct hsm_action_list *)(lh + 1); 2094 int rc; 2095 2096 if (len < sizeof(*lh) + sizeof(*hal)) { 2097 CERROR("Short HSM message %d < %d\n", len, 2098 (int) (sizeof(*lh) + sizeof(*hal))); 2099 return -EPROTO; 2100 } 2101 if (lh->kuc_magic == __swab16(KUC_MAGIC)) { 2102 lustre_swab_kuch(lh); 2103 lustre_swab_hal(hal); 2104 } else if (lh->kuc_magic != KUC_MAGIC) { 2105 CERROR("Bad magic %x!=%x\n", lh->kuc_magic, KUC_MAGIC); 2106 return -EPROTO; 2107 } 2108 2109 CDEBUG(D_HSM, 2110 "Received message mg=%x t=%d m=%d l=%d actions=%d on %s\n", 2111 lh->kuc_magic, lh->kuc_transport, lh->kuc_msgtype, 2112 lh->kuc_msglen, hal->hal_count, hal->hal_fsname); 2113 2114 /* Broadcast to HSM listeners */ 2115 rc = libcfs_kkuc_group_put(KUC_GRP_HSM, lh); 2116 2117 return rc; 2118} 2119 2120/** 2121 * callback function passed to kuc for re-registering each HSM copytool 2122 * running on MDC, after MDT shutdown/recovery. 2123 * @param data archive id served by the copytool 2124 * @param cb_arg callback argument (obd_import) 2125 */ 2126static int mdc_hsm_ct_reregister(__u32 data, void *cb_arg) 2127{ 2128 struct obd_import *imp = (struct obd_import *)cb_arg; 2129 __u32 archive = data; 2130 int rc; 2131 2132 CDEBUG(D_HA, "recover copytool registration to MDT (archive=%#x)\n", 2133 archive); 2134 rc = mdc_ioc_hsm_ct_register(imp, archive); 2135 2136 /* ignore error if the copytool is already registered */ 2137 return ((rc != 0) && (rc != -EEXIST)) ? rc : 0; 2138} 2139 2140/** 2141 * Re-establish all kuc contexts with MDT 2142 * after MDT shutdown/recovery. 2143 */ 2144static int mdc_kuc_reregister(struct obd_import *imp) 2145{ 2146 /* re-register HSM agents */ 2147 return libcfs_kkuc_group_foreach(KUC_GRP_HSM, mdc_hsm_ct_reregister, 2148 (void *)imp); 2149} 2150 2151int mdc_set_info_async(const struct lu_env *env, 2152 struct obd_export *exp, 2153 u32 keylen, void *key, 2154 u32 vallen, void *val, 2155 struct ptlrpc_request_set *set) 2156{ 2157 struct obd_import *imp = class_exp2cliimp(exp); 2158 int rc; 2159 2160 if (KEY_IS(KEY_READ_ONLY)) { 2161 if (vallen != sizeof(int)) 2162 return -EINVAL; 2163 2164 spin_lock(&imp->imp_lock); 2165 if (*((int *)val)) { 2166 imp->imp_connect_flags_orig |= OBD_CONNECT_RDONLY; 2167 imp->imp_connect_data.ocd_connect_flags |= 2168 OBD_CONNECT_RDONLY; 2169 } else { 2170 imp->imp_connect_flags_orig &= ~OBD_CONNECT_RDONLY; 2171 imp->imp_connect_data.ocd_connect_flags &= 2172 ~OBD_CONNECT_RDONLY; 2173 } 2174 spin_unlock(&imp->imp_lock); 2175 2176 rc = do_set_info_async(imp, MDS_SET_INFO, LUSTRE_MDS_VERSION, 2177 keylen, key, vallen, val, set); 2178 return rc; 2179 } 2180 if (KEY_IS(KEY_SPTLRPC_CONF)) { 2181 sptlrpc_conf_client_adapt(exp->exp_obd); 2182 return 0; 2183 } 2184 if (KEY_IS(KEY_FLUSH_CTX)) { 2185 sptlrpc_import_flush_my_ctx(imp); 2186 return 0; 2187 } 2188 if (KEY_IS(KEY_CHANGELOG_CLEAR)) { 2189 rc = do_set_info_async(imp, MDS_SET_INFO, LUSTRE_MDS_VERSION, 2190 keylen, key, vallen, val, set); 2191 return rc; 2192 } 2193 if (KEY_IS(KEY_HSM_COPYTOOL_SEND)) { 2194 rc = mdc_hsm_copytool_send(vallen, val); 2195 return rc; 2196 } 2197 2198 CERROR("Unknown key %s\n", (char *)key); 2199 return -EINVAL; 2200} 2201 2202int mdc_get_info(const struct lu_env *env, struct obd_export *exp, 2203 __u32 keylen, void *key, __u32 *vallen, void *val, 2204 struct lov_stripe_md *lsm) 2205{ 2206 int rc = -EINVAL; 2207 2208 if (KEY_IS(KEY_MAX_EASIZE)) { 2209 int mdsize, *max_easize; 2210 2211 if (*vallen != sizeof(int)) 2212 return -EINVAL; 2213 mdsize = *(int *)val; 2214 if (mdsize > exp->exp_obd->u.cli.cl_max_mds_easize) 2215 exp->exp_obd->u.cli.cl_max_mds_easize = mdsize; 2216 max_easize = val; 2217 *max_easize = exp->exp_obd->u.cli.cl_max_mds_easize; 2218 return 0; 2219 } else if (KEY_IS(KEY_DEFAULT_EASIZE)) { 2220 int *default_easize; 2221 2222 if (*vallen != sizeof(int)) 2223 return -EINVAL; 2224 default_easize = val; 2225 *default_easize = exp->exp_obd->u.cli.cl_default_mds_easize; 2226 return 0; 2227 } else if (KEY_IS(KEY_MAX_COOKIESIZE)) { 2228 int mdsize, *max_cookiesize; 2229 2230 if (*vallen != sizeof(int)) 2231 return -EINVAL; 2232 mdsize = *(int *)val; 2233 if (mdsize > exp->exp_obd->u.cli.cl_max_mds_cookiesize) 2234 exp->exp_obd->u.cli.cl_max_mds_cookiesize = mdsize; 2235 max_cookiesize = val; 2236 *max_cookiesize = exp->exp_obd->u.cli.cl_max_mds_cookiesize; 2237 return 0; 2238 } else if (KEY_IS(KEY_DEFAULT_COOKIESIZE)) { 2239 int *default_cookiesize; 2240 2241 if (*vallen != sizeof(int)) 2242 return -EINVAL; 2243 default_cookiesize = val; 2244 *default_cookiesize = 2245 exp->exp_obd->u.cli.cl_default_mds_cookiesize; 2246 return 0; 2247 } else if (KEY_IS(KEY_CONN_DATA)) { 2248 struct obd_import *imp = class_exp2cliimp(exp); 2249 struct obd_connect_data *data = val; 2250 2251 if (*vallen != sizeof(*data)) 2252 return -EINVAL; 2253 2254 *data = imp->imp_connect_data; 2255 return 0; 2256 } else if (KEY_IS(KEY_TGT_COUNT)) { 2257 *((int *)val) = 1; 2258 return 0; 2259 } 2260 2261 rc = mdc_get_info_rpc(exp, keylen, key, *vallen, val); 2262 2263 return rc; 2264} 2265 2266int mdc_sync(struct obd_export *exp, const struct lu_fid *fid, 2267 struct obd_capa *oc, struct ptlrpc_request **request) 2268{ 2269 struct ptlrpc_request *req; 2270 int rc; 2271 2272 *request = NULL; 2273 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_SYNC); 2274 if (req == NULL) 2275 return -ENOMEM; 2276 2277 mdc_set_capa_size(req, &RMF_CAPA1, oc); 2278 2279 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_SYNC); 2280 if (rc) { 2281 ptlrpc_request_free(req); 2282 return rc; 2283 } 2284 2285 mdc_pack_body(req, fid, oc, 0, 0, -1, 0); 2286 2287 ptlrpc_request_set_replen(req); 2288 2289 rc = ptlrpc_queue_wait(req); 2290 if (rc) 2291 ptlrpc_req_finished(req); 2292 else 2293 *request = req; 2294 return rc; 2295} 2296 2297static int mdc_import_event(struct obd_device *obd, struct obd_import *imp, 2298 enum obd_import_event event) 2299{ 2300 int rc = 0; 2301 2302 LASSERT(imp->imp_obd == obd); 2303 2304 switch (event) { 2305 case IMP_EVENT_DISCON: { 2306#if 0 2307 /* XXX Pass event up to OBDs stack. used only for FLD now */ 2308 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_DISCON, NULL); 2309#endif 2310 break; 2311 } 2312 case IMP_EVENT_INACTIVE: { 2313 struct client_obd *cli = &obd->u.cli; 2314 /* 2315 * Flush current sequence to make client obtain new one 2316 * from server in case of disconnect/reconnect. 2317 */ 2318 if (cli->cl_seq != NULL) 2319 seq_client_flush(cli->cl_seq); 2320 2321 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_INACTIVE, NULL); 2322 break; 2323 } 2324 case IMP_EVENT_INVALIDATE: { 2325 struct ldlm_namespace *ns = obd->obd_namespace; 2326 2327 ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY); 2328 2329 break; 2330 } 2331 case IMP_EVENT_ACTIVE: 2332 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVE, NULL); 2333 /* redo the kuc registration after reconnecting */ 2334 if (rc == 0) 2335 rc = mdc_kuc_reregister(imp); 2336 break; 2337 case IMP_EVENT_OCD: 2338 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_OCD, NULL); 2339 break; 2340 case IMP_EVENT_DEACTIVATE: 2341 case IMP_EVENT_ACTIVATE: 2342 break; 2343 default: 2344 CERROR("Unknown import event %x\n", event); 2345 LBUG(); 2346 } 2347 return rc; 2348} 2349 2350int mdc_fid_alloc(struct obd_export *exp, struct lu_fid *fid, 2351 struct md_op_data *op_data) 2352{ 2353 struct client_obd *cli = &exp->exp_obd->u.cli; 2354 struct lu_client_seq *seq = cli->cl_seq; 2355 2356 return seq_client_alloc_fid(NULL, seq, fid); 2357} 2358 2359struct obd_uuid *mdc_get_uuid(struct obd_export *exp) 2360{ 2361 struct client_obd *cli = &exp->exp_obd->u.cli; 2362 2363 return &cli->cl_target_uuid; 2364} 2365 2366/** 2367 * Determine whether the lock can be canceled before replaying it during 2368 * recovery, non zero value will be return if the lock can be canceled, 2369 * or zero returned for not 2370 */ 2371static int mdc_cancel_for_recovery(struct ldlm_lock *lock) 2372{ 2373 if (lock->l_resource->lr_type != LDLM_IBITS) 2374 return 0; 2375 2376 /* FIXME: if we ever get into a situation where there are too many 2377 * opened files with open locks on a single node, then we really 2378 * should replay these open locks to reget it */ 2379 if (lock->l_policy_data.l_inodebits.bits & MDS_INODELOCK_OPEN) 2380 return 0; 2381 2382 return 1; 2383} 2384 2385static int mdc_resource_inode_free(struct ldlm_resource *res) 2386{ 2387 if (res->lr_lvb_inode) 2388 res->lr_lvb_inode = NULL; 2389 2390 return 0; 2391} 2392 2393struct ldlm_valblock_ops inode_lvbo = { 2394 .lvbo_free = mdc_resource_inode_free, 2395}; 2396 2397static int mdc_llog_init(struct obd_device *obd) 2398{ 2399 struct obd_llog_group *olg = &obd->obd_olg; 2400 struct llog_ctxt *ctxt; 2401 int rc; 2402 2403 rc = llog_setup(NULL, obd, olg, LLOG_CHANGELOG_REPL_CTXT, obd, 2404 &llog_client_ops); 2405 if (rc) 2406 return rc; 2407 2408 ctxt = llog_group_get_ctxt(olg, LLOG_CHANGELOG_REPL_CTXT); 2409 llog_initiator_connect(ctxt); 2410 llog_ctxt_put(ctxt); 2411 2412 return 0; 2413} 2414 2415static void mdc_llog_finish(struct obd_device *obd) 2416{ 2417 struct llog_ctxt *ctxt; 2418 2419 ctxt = llog_get_context(obd, LLOG_CHANGELOG_REPL_CTXT); 2420 if (ctxt) 2421 llog_cleanup(NULL, ctxt); 2422} 2423 2424static int mdc_setup(struct obd_device *obd, struct lustre_cfg *cfg) 2425{ 2426 struct client_obd *cli = &obd->u.cli; 2427 struct lprocfs_static_vars lvars = { NULL }; 2428 int rc; 2429 2430 OBD_ALLOC(cli->cl_rpc_lock, sizeof(*cli->cl_rpc_lock)); 2431 if (!cli->cl_rpc_lock) 2432 return -ENOMEM; 2433 mdc_init_rpc_lock(cli->cl_rpc_lock); 2434 2435 ptlrpcd_addref(); 2436 2437 OBD_ALLOC(cli->cl_close_lock, sizeof(*cli->cl_close_lock)); 2438 if (!cli->cl_close_lock) { 2439 rc = -ENOMEM; 2440 goto err_rpc_lock; 2441 } 2442 mdc_init_rpc_lock(cli->cl_close_lock); 2443 2444 rc = client_obd_setup(obd, cfg); 2445 if (rc) 2446 goto err_close_lock; 2447 lprocfs_mdc_init_vars(&lvars); 2448 lprocfs_obd_setup(obd, lvars.obd_vars); 2449 sptlrpc_lprocfs_cliobd_attach(obd); 2450 ptlrpc_lprocfs_register_obd(obd); 2451 2452 ns_register_cancel(obd->obd_namespace, mdc_cancel_for_recovery); 2453 2454 obd->obd_namespace->ns_lvbo = &inode_lvbo; 2455 2456 rc = mdc_llog_init(obd); 2457 if (rc) { 2458 mdc_cleanup(obd); 2459 CERROR("failed to setup llogging subsystems\n"); 2460 } 2461 2462 return rc; 2463 2464err_close_lock: 2465 OBD_FREE(cli->cl_close_lock, sizeof(*cli->cl_close_lock)); 2466err_rpc_lock: 2467 OBD_FREE(cli->cl_rpc_lock, sizeof(*cli->cl_rpc_lock)); 2468 ptlrpcd_decref(); 2469 return rc; 2470} 2471 2472/* Initialize the default and maximum LOV EA and cookie sizes. This allows 2473 * us to make MDS RPCs with large enough reply buffers to hold a default 2474 * sized EA and cookie without having to calculate this (via a call into the 2475 * LOV + OSCs) each time we make an RPC. The maximum size is also tracked 2476 * but not used to avoid wastefully vmalloc()'ing large reply buffers when 2477 * a large number of stripes is possible. If a larger reply buffer is 2478 * required it will be reallocated in the ptlrpc layer due to overflow. 2479 */ 2480static int mdc_init_ea_size(struct obd_export *exp, int easize, 2481 int def_easize, int cookiesize, int def_cookiesize) 2482{ 2483 struct obd_device *obd = exp->exp_obd; 2484 struct client_obd *cli = &obd->u.cli; 2485 2486 if (cli->cl_max_mds_easize < easize) 2487 cli->cl_max_mds_easize = easize; 2488 2489 if (cli->cl_default_mds_easize < def_easize) 2490 cli->cl_default_mds_easize = def_easize; 2491 2492 if (cli->cl_max_mds_cookiesize < cookiesize) 2493 cli->cl_max_mds_cookiesize = cookiesize; 2494 2495 if (cli->cl_default_mds_cookiesize < def_cookiesize) 2496 cli->cl_default_mds_cookiesize = def_cookiesize; 2497 2498 return 0; 2499} 2500 2501static int mdc_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage) 2502{ 2503 switch (stage) { 2504 case OBD_CLEANUP_EARLY: 2505 break; 2506 case OBD_CLEANUP_EXPORTS: 2507 /* Failsafe, ok if racy */ 2508 if (obd->obd_type->typ_refcnt <= 1) 2509 libcfs_kkuc_group_rem(0, KUC_GRP_HSM); 2510 2511 obd_cleanup_client_import(obd); 2512 ptlrpc_lprocfs_unregister_obd(obd); 2513 lprocfs_obd_cleanup(obd); 2514 2515 mdc_llog_finish(obd); 2516 break; 2517 } 2518 return 0; 2519} 2520 2521static int mdc_cleanup(struct obd_device *obd) 2522{ 2523 struct client_obd *cli = &obd->u.cli; 2524 2525 OBD_FREE(cli->cl_rpc_lock, sizeof(*cli->cl_rpc_lock)); 2526 OBD_FREE(cli->cl_close_lock, sizeof(*cli->cl_close_lock)); 2527 2528 ptlrpcd_decref(); 2529 2530 return client_obd_cleanup(obd); 2531} 2532 2533static int mdc_process_config(struct obd_device *obd, u32 len, void *buf) 2534{ 2535 struct lustre_cfg *lcfg = buf; 2536 struct lprocfs_static_vars lvars = { NULL }; 2537 int rc = 0; 2538 2539 lprocfs_mdc_init_vars(&lvars); 2540 switch (lcfg->lcfg_command) { 2541 default: 2542 rc = class_process_proc_param(PARAM_MDC, lvars.obd_vars, 2543 lcfg, obd); 2544 if (rc > 0) 2545 rc = 0; 2546 break; 2547 } 2548 return rc; 2549} 2550 2551 2552/* get remote permission for current user on fid */ 2553int mdc_get_remote_perm(struct obd_export *exp, const struct lu_fid *fid, 2554 struct obd_capa *oc, __u32 suppgid, 2555 struct ptlrpc_request **request) 2556{ 2557 struct ptlrpc_request *req; 2558 int rc; 2559 2560 LASSERT(client_is_remote(exp)); 2561 2562 *request = NULL; 2563 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_GETATTR); 2564 if (req == NULL) 2565 return -ENOMEM; 2566 2567 mdc_set_capa_size(req, &RMF_CAPA1, oc); 2568 2569 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR); 2570 if (rc) { 2571 ptlrpc_request_free(req); 2572 return rc; 2573 } 2574 2575 mdc_pack_body(req, fid, oc, OBD_MD_FLRMTPERM, 0, suppgid, 0); 2576 2577 req_capsule_set_size(&req->rq_pill, &RMF_ACL, RCL_SERVER, 2578 sizeof(struct mdt_remote_perm)); 2579 2580 ptlrpc_request_set_replen(req); 2581 2582 rc = ptlrpc_queue_wait(req); 2583 if (rc) 2584 ptlrpc_req_finished(req); 2585 else 2586 *request = req; 2587 return rc; 2588} 2589 2590static int mdc_interpret_renew_capa(const struct lu_env *env, 2591 struct ptlrpc_request *req, void *args, 2592 int status) 2593{ 2594 struct mdc_renew_capa_args *ra = args; 2595 struct mdt_body *body = NULL; 2596 struct lustre_capa *capa; 2597 2598 if (status) { 2599 capa = ERR_PTR(status); 2600 goto out; 2601 } 2602 2603 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY); 2604 if (body == NULL) { 2605 capa = ERR_PTR(-EFAULT); 2606 goto out; 2607 } 2608 2609 if ((body->valid & OBD_MD_FLOSSCAPA) == 0) { 2610 capa = ERR_PTR(-ENOENT); 2611 goto out; 2612 } 2613 2614 capa = req_capsule_server_get(&req->rq_pill, &RMF_CAPA2); 2615 if (!capa) { 2616 capa = ERR_PTR(-EFAULT); 2617 goto out; 2618 } 2619out: 2620 ra->ra_cb(ra->ra_oc, capa); 2621 return 0; 2622} 2623 2624static int mdc_renew_capa(struct obd_export *exp, struct obd_capa *oc, 2625 renew_capa_cb_t cb) 2626{ 2627 struct ptlrpc_request *req; 2628 struct mdc_renew_capa_args *ra; 2629 2630 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), &RQF_MDS_GETATTR, 2631 LUSTRE_MDS_VERSION, MDS_GETATTR); 2632 if (req == NULL) 2633 return -ENOMEM; 2634 2635 /* NB, OBD_MD_FLOSSCAPA is set here, but it doesn't necessarily mean the 2636 * capa to renew is oss capa. 2637 */ 2638 mdc_pack_body(req, &oc->c_capa.lc_fid, oc, OBD_MD_FLOSSCAPA, 0, -1, 0); 2639 ptlrpc_request_set_replen(req); 2640 2641 CLASSERT(sizeof(*ra) <= sizeof(req->rq_async_args)); 2642 ra = ptlrpc_req_async_args(req); 2643 ra->ra_oc = oc; 2644 ra->ra_cb = cb; 2645 req->rq_interpret_reply = mdc_interpret_renew_capa; 2646 ptlrpcd_add_req(req, PDL_POLICY_LOCAL, -1); 2647 return 0; 2648} 2649 2650struct obd_ops mdc_obd_ops = { 2651 .o_owner = THIS_MODULE, 2652 .o_setup = mdc_setup, 2653 .o_precleanup = mdc_precleanup, 2654 .o_cleanup = mdc_cleanup, 2655 .o_add_conn = client_import_add_conn, 2656 .o_del_conn = client_import_del_conn, 2657 .o_connect = client_connect_import, 2658 .o_disconnect = client_disconnect_export, 2659 .o_iocontrol = mdc_iocontrol, 2660 .o_set_info_async = mdc_set_info_async, 2661 .o_statfs = mdc_statfs, 2662 .o_fid_init = client_fid_init, 2663 .o_fid_fini = client_fid_fini, 2664 .o_fid_alloc = mdc_fid_alloc, 2665 .o_import_event = mdc_import_event, 2666 .o_get_info = mdc_get_info, 2667 .o_process_config = mdc_process_config, 2668 .o_get_uuid = mdc_get_uuid, 2669 .o_quotactl = mdc_quotactl, 2670 .o_quotacheck = mdc_quotacheck 2671}; 2672 2673struct md_ops mdc_md_ops = { 2674 .m_getstatus = mdc_getstatus, 2675 .m_null_inode = mdc_null_inode, 2676 .m_find_cbdata = mdc_find_cbdata, 2677 .m_close = mdc_close, 2678 .m_create = mdc_create, 2679 .m_done_writing = mdc_done_writing, 2680 .m_enqueue = mdc_enqueue, 2681 .m_getattr = mdc_getattr, 2682 .m_getattr_name = mdc_getattr_name, 2683 .m_intent_lock = mdc_intent_lock, 2684 .m_link = mdc_link, 2685 .m_is_subdir = mdc_is_subdir, 2686 .m_rename = mdc_rename, 2687 .m_setattr = mdc_setattr, 2688 .m_setxattr = mdc_setxattr, 2689 .m_getxattr = mdc_getxattr, 2690 .m_sync = mdc_sync, 2691 .m_readpage = mdc_readpage, 2692 .m_unlink = mdc_unlink, 2693 .m_cancel_unused = mdc_cancel_unused, 2694 .m_init_ea_size = mdc_init_ea_size, 2695 .m_set_lock_data = mdc_set_lock_data, 2696 .m_lock_match = mdc_lock_match, 2697 .m_get_lustre_md = mdc_get_lustre_md, 2698 .m_free_lustre_md = mdc_free_lustre_md, 2699 .m_set_open_replay_data = mdc_set_open_replay_data, 2700 .m_clear_open_replay_data = mdc_clear_open_replay_data, 2701 .m_renew_capa = mdc_renew_capa, 2702 .m_unpack_capa = mdc_unpack_capa, 2703 .m_get_remote_perm = mdc_get_remote_perm, 2704 .m_intent_getattr_async = mdc_intent_getattr_async, 2705 .m_revalidate_lock = mdc_revalidate_lock 2706}; 2707 2708int __init mdc_init(void) 2709{ 2710 int rc; 2711 struct lprocfs_static_vars lvars = { NULL }; 2712 2713 lprocfs_mdc_init_vars(&lvars); 2714 2715 rc = class_register_type(&mdc_obd_ops, &mdc_md_ops, lvars.module_vars, 2716 LUSTRE_MDC_NAME, NULL); 2717 return rc; 2718} 2719 2720static void /*__exit*/ mdc_exit(void) 2721{ 2722 class_unregister_type(LUSTRE_MDC_NAME); 2723} 2724 2725MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>"); 2726MODULE_DESCRIPTION("Lustre Metadata Client"); 2727MODULE_LICENSE("GPL"); 2728 2729module_init(mdc_init); 2730module_exit(mdc_exit); 2731