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lustre: Account for changelog_ext_rec in CR_MAXSIZE
[deliverable/linux.git] / drivers / staging / lustre / lustre / mdc / mdc_request.c
CommitLineData
d7e09d03
PT		 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 <lustre_acl.h>
46#include <obd_class.h>
47#include <lustre_fid.h>
48#include <lprocfs_status.h>
49#include <lustre_param.h>
50#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;
d7e09d03
PT		 68
69 /* swabbed already in mdc_enqueue */
70 capa = req_capsule_server_get(&req->rq_pill, field);
71 if (capa == NULL)
0a3bdb00 72 return -EPROTO;
d7e09d03
PT		 73
74 c = alloc_capa(CAPA_SITE_CLIENT);
75 if (IS_ERR(c)) {
76 CDEBUG(D_INFO, "alloc capa failed!\n");
0a3bdb00 77 return PTR_ERR(c);
d7e09d03
PT		 78 } else {
79 c->c_capa = *capa;
80 *oc = c;
0a3bdb00 81 return 0;
d7e09d03
PT		 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;
d7e09d03
PT		 111
112 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_GETSTATUS,
113 LUSTRE_MDS_VERSION, MDS_GETSTATUS);
114 if (req == NULL)
0a3bdb00 115 return -ENOMEM;
d7e09d03
PT		 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, rc);
126
127 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
128 if (body == NULL)
129 GOTO(out, rc = -EPROTO);
130
131 if (body->valid & OBD_MD_FLMDSCAPA) {
132 rc = mdc_unpack_capa(NULL, req, &RMF_CAPA1, pc);
133 if (rc)
134 GOTO(out, rc);
135 }
136
137 *rootfid = body->fid1;
138 CDEBUG(D_NET,
139 "root fid="DFID", last_committed="LPU64"\n",
140 PFID(rootfid),
141 lustre_msg_get_last_committed(req->rq_repmsg));
d7e09d03
PT		 142out:
143 ptlrpc_req_finished(req);
144 return rc;
145}
146
147/* This should be mdc_get_info("rootfid") */
148int mdc_getstatus(struct obd_export *exp, struct lu_fid *rootfid,
149 struct obd_capa **pc)
150{
151 return send_getstatus(class_exp2cliimp(exp), rootfid, pc,
152 LUSTRE_IMP_FULL, 0);
153}
154
155/*
156 * This function now is known to always saying that it will receive 4 buffers
157 * from server. Even for cases when acl_size and md_size is zero, RPC header
158 * will contain 4 fields and RPC itself will contain zero size fields. This is
159 * because mdt_getattr*() _always_ returns 4 fields, but if acl is not needed
160 * and thus zero, it shrinks it, making zero size. The same story about
161 * md_size. And this is course of problem when client waits for smaller number
162 * of fields. This issue will be fixed later when client gets aware of RPC
163 * layouts. --umka
164 */
165static int mdc_getattr_common(struct obd_export *exp,
166 struct ptlrpc_request *req)
167{
168 struct req_capsule *pill = &req->rq_pill;
169 struct mdt_body *body;
170 void *eadata;
171 int rc;
d7e09d03
PT		 172
173 /* Request message already built. */
174 rc = ptlrpc_queue_wait(req);
175 if (rc != 0)
0a3bdb00 176 return rc;
d7e09d03
PT		 177
178 /* sanity check for the reply */
179 body = req_capsule_server_get(pill, &RMF_MDT_BODY);
180 if (body == NULL)
0a3bdb00 181 return -EPROTO;
d7e09d03
PT		 182
183 CDEBUG(D_NET, "mode: %o\n", body->mode);
184
185 if (body->eadatasize != 0) {
186 mdc_update_max_ea_from_body(exp, body);
187
188 eadata = req_capsule_server_sized_get(pill, &RMF_MDT_MD,
189 body->eadatasize);
190 if (eadata == NULL)
0a3bdb00 191 return -EPROTO;
d7e09d03
PT		 192 }
193
194 if (body->valid & OBD_MD_FLRMTPERM) {
195 struct mdt_remote_perm *perm;
196
197 LASSERT(client_is_remote(exp));
198 perm = req_capsule_server_swab_get(pill, &RMF_ACL,
199 lustre_swab_mdt_remote_perm);
200 if (perm == NULL)
0a3bdb00 201 return -EPROTO;
d7e09d03
PT		 202 }
203
204 if (body->valid & OBD_MD_FLMDSCAPA) {
205 struct lustre_capa *capa;
206 capa = req_capsule_server_get(pill, &RMF_CAPA1);
207 if (capa == NULL)
0a3bdb00 208 return -EPROTO;
d7e09d03
PT		 209 }
210
0a3bdb00 211 return 0;
d7e09d03
PT		 212}
213
214int mdc_getattr(struct obd_export *exp, struct md_op_data *op_data,
215 struct ptlrpc_request **request)
216{
217 struct ptlrpc_request *req;
218 int rc;
d7e09d03
PT		 219
220 /* Single MDS without an LMV case */
221 if (op_data->op_flags & MF_GET_MDT_IDX) {
222 op_data->op_mds = 0;
0a3bdb00 223 return 0;
d7e09d03
PT		 224 }
225 *request = NULL;
226 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_GETATTR);
227 if (req == NULL)
0a3bdb00 228 return -ENOMEM;
d7e09d03
PT		 229
230 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
231
232 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR);
233 if (rc) {
234 ptlrpc_request_free(req);
0a3bdb00 235 return rc;
d7e09d03
PT		 236 }
237
238 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1,
239 op_data->op_valid, op_data->op_mode, -1, 0);
240
241 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
242 op_data->op_mode);
243 if (op_data->op_valid & OBD_MD_FLRMTPERM) {
244 LASSERT(client_is_remote(exp));
245 req_capsule_set_size(&req->rq_pill, &RMF_ACL, RCL_SERVER,
246 sizeof(struct mdt_remote_perm));
247 }
248 ptlrpc_request_set_replen(req);
249
250 rc = mdc_getattr_common(exp, req);
251 if (rc)
252 ptlrpc_req_finished(req);
253 else
254 *request = req;
0a3bdb00 255 return rc;
d7e09d03
PT		 256}
257
258int mdc_getattr_name(struct obd_export *exp, struct md_op_data *op_data,
259 struct ptlrpc_request **request)
260{
261 struct ptlrpc_request *req;
262 int rc;
d7e09d03
PT		 263
264 *request = NULL;
265 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
266 &RQF_MDS_GETATTR_NAME);
267 if (req == NULL)
0a3bdb00 268 return -ENOMEM;
d7e09d03
PT		 269
270 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
271 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
272 op_data->op_namelen + 1);
273
274 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR_NAME);
275 if (rc) {
276 ptlrpc_request_free(req);
0a3bdb00 277 return rc;
d7e09d03
PT		 278 }
279
280 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1,
281 op_data->op_valid, op_data->op_mode,
282 op_data->op_suppgids[0], 0);
283
284 if (op_data->op_name) {
285 char *name = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
286 LASSERT(strnlen(op_data->op_name, op_data->op_namelen) ==
287 op_data->op_namelen);
288 memcpy(name, op_data->op_name, op_data->op_namelen);
289 }
290
291 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
292 op_data->op_mode);
293 ptlrpc_request_set_replen(req);
294
295 rc = mdc_getattr_common(exp, req);
296 if (rc)
297 ptlrpc_req_finished(req);
298 else
299 *request = req;
0a3bdb00 300 return rc;
d7e09d03
PT		 301}
302
303static int mdc_is_subdir(struct obd_export *exp,
304 const struct lu_fid *pfid,
305 const struct lu_fid *cfid,
306 struct ptlrpc_request **request)
307{
308 struct ptlrpc_request *req;
309 int rc;
310
d7e09d03
PT		 311 *request = NULL;
312 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
313 &RQF_MDS_IS_SUBDIR, LUSTRE_MDS_VERSION,
314 MDS_IS_SUBDIR);
315 if (req == NULL)
0a3bdb00 316 return -ENOMEM;
d7e09d03
PT		 317
318 mdc_is_subdir_pack(req, pfid, cfid, 0);
319 ptlrpc_request_set_replen(req);
320
321 rc = ptlrpc_queue_wait(req);
322 if (rc && rc != -EREMOTE)
323 ptlrpc_req_finished(req);
324 else
325 *request = req;
0a3bdb00 326 return rc;
d7e09d03
PT		 327}
328
329static int mdc_xattr_common(struct obd_export *exp,const struct req_format *fmt,
330 const struct lu_fid *fid,
331 struct obd_capa *oc, int opcode, obd_valid valid,
332 const char *xattr_name, const char *input,
333 int input_size, int output_size, int flags,
334 __u32 suppgid, struct ptlrpc_request **request)
335{
336 struct ptlrpc_request *req;
337 int xattr_namelen = 0;
338 char *tmp;
339 int rc;
d7e09d03
PT		 340
341 *request = NULL;
342 req = ptlrpc_request_alloc(class_exp2cliimp(exp), fmt);
343 if (req == NULL)
0a3bdb00 344 return -ENOMEM;
d7e09d03
PT		 345
346 mdc_set_capa_size(req, &RMF_CAPA1, oc);
347 if (xattr_name) {
348 xattr_namelen = strlen(xattr_name) + 1;
349 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
350 xattr_namelen);
351 }
352 if (input_size) {
353 LASSERT(input);
354 req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_CLIENT,
355 input_size);
356 }
357
358 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, opcode);
359 if (rc) {
360 ptlrpc_request_free(req);
0a3bdb00 361 return rc;
d7e09d03
PT		 362 }
363
364 if (opcode == MDS_REINT) {
365 struct mdt_rec_setxattr *rec;
366
367 CLASSERT(sizeof(struct mdt_rec_setxattr) ==
368 sizeof(struct mdt_rec_reint));
369 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
370 rec->sx_opcode = REINT_SETXATTR;
4b1a25f0
PT		 371 rec->sx_fsuid = from_kuid(&init_user_ns, current_fsuid());
372 rec->sx_fsgid = from_kgid(&init_user_ns, current_fsgid());
d7e09d03
PT		 373 rec->sx_cap = cfs_curproc_cap_pack();
374 rec->sx_suppgid1 = suppgid;
375 rec->sx_suppgid2 = -1;
376 rec->sx_fid = *fid;
377 rec->sx_valid = valid | OBD_MD_FLCTIME;
378 rec->sx_time = cfs_time_current_sec();
379 rec->sx_size = output_size;
380 rec->sx_flags = flags;
381
382 mdc_pack_capa(req, &RMF_CAPA1, oc);
383 } else {
384 mdc_pack_body(req, fid, oc, valid, output_size, suppgid, flags);
385 }
386
387 if (xattr_name) {
388 tmp = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
389 memcpy(tmp, xattr_name, xattr_namelen);
390 }
391 if (input_size) {
392 tmp = req_capsule_client_get(&req->rq_pill, &RMF_EADATA);
393 memcpy(tmp, input, input_size);
394 }
395
396 if (req_capsule_has_field(&req->rq_pill, &RMF_EADATA, RCL_SERVER))
397 req_capsule_set_size(&req->rq_pill, &RMF_EADATA,
398 RCL_SERVER, output_size);
399 ptlrpc_request_set_replen(req);
400
401 /* make rpc */
402 if (opcode == MDS_REINT)
403 mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
404
405 rc = ptlrpc_queue_wait(req);
406
407 if (opcode == MDS_REINT)
408 mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
409
410 if (rc)
411 ptlrpc_req_finished(req);
412 else
413 *request = req;
0a3bdb00 414 return rc;
d7e09d03
PT		 415}
416
417int mdc_setxattr(struct obd_export *exp, const struct lu_fid *fid,
418 struct obd_capa *oc, obd_valid valid, const char *xattr_name,
419 const char *input, int input_size, int output_size,
420 int flags, __u32 suppgid, struct ptlrpc_request **request)
421{
422 return mdc_xattr_common(exp, &RQF_MDS_REINT_SETXATTR,
423 fid, oc, MDS_REINT, valid, xattr_name,
424 input, input_size, output_size, flags,
425 suppgid, request);
426}
427
428int mdc_getxattr(struct obd_export *exp, const struct lu_fid *fid,
429 struct obd_capa *oc, obd_valid valid, const char *xattr_name,
430 const char *input, int input_size, int output_size,
431 int flags, struct ptlrpc_request **request)
432{
433 return mdc_xattr_common(exp, &RQF_MDS_GETXATTR,
434 fid, oc, MDS_GETXATTR, valid, xattr_name,
435 input, input_size, output_size, flags,
436 -1, request);
437}
438
439#ifdef CONFIG_FS_POSIX_ACL
440static int mdc_unpack_acl(struct ptlrpc_request *req, struct lustre_md *md)
441{
442 struct req_capsule *pill = &req->rq_pill;
443 struct mdt_body *body = md->body;
444 struct posix_acl *acl;
445 void *buf;
446 int rc;
d7e09d03
PT		 447
448 if (!body->aclsize)
0a3bdb00 449 return 0;
d7e09d03
PT		 450
451 buf = req_capsule_server_sized_get(pill, &RMF_ACL, body->aclsize);
452
453 if (!buf)
0a3bdb00 454 return -EPROTO;
d7e09d03
PT		 455
456 acl = posix_acl_from_xattr(&init_user_ns, buf, body->aclsize);
457 if (IS_ERR(acl)) {
458 rc = PTR_ERR(acl);
459 CERROR("convert xattr to acl: %d\n", rc);
0a3bdb00 460 return rc;
d7e09d03
PT		 461 }
462
463 rc = posix_acl_valid(acl);
464 if (rc) {
465 CERROR("validate acl: %d\n", rc);
466 posix_acl_release(acl);
0a3bdb00 467 return rc;
d7e09d03
PT		 468 }
469
470 md->posix_acl = acl;
0a3bdb00 471 return 0;
d7e09d03
PT		 472}
473#else
474#define mdc_unpack_acl(req, md) 0
475#endif
476
477int mdc_get_lustre_md(struct obd_export *exp, struct ptlrpc_request *req,
478 struct obd_export *dt_exp, struct obd_export *md_exp,
479 struct lustre_md *md)
480{
481 struct req_capsule *pill = &req->rq_pill;
482 int rc;
d7e09d03
PT		 483
484 LASSERT(md);
485 memset(md, 0, sizeof(*md));
486
487 md->body = req_capsule_server_get(pill, &RMF_MDT_BODY);
488 LASSERT(md->body != NULL);
489
490 if (md->body->valid & OBD_MD_FLEASIZE) {
491 int lmmsize;
492 struct lov_mds_md *lmm;
493
494 if (!S_ISREG(md->body->mode)) {
495 CDEBUG(D_INFO, "OBD_MD_FLEASIZE set, should be a "
496 "regular file, but is not\n");
497 GOTO(out, rc = -EPROTO);
498 }
499
500 if (md->body->eadatasize == 0) {
501 CDEBUG(D_INFO, "OBD_MD_FLEASIZE set, "
502 "but eadatasize 0\n");
503 GOTO(out, rc = -EPROTO);
504 }
505 lmmsize = md->body->eadatasize;
506 lmm = req_capsule_server_sized_get(pill, &RMF_MDT_MD, lmmsize);
507 if (!lmm)
508 GOTO(out, rc = -EPROTO);
509
510 rc = obd_unpackmd(dt_exp, &md->lsm, lmm, lmmsize);
511 if (rc < 0)
512 GOTO(out, rc);
513
514 if (rc < sizeof(*md->lsm)) {
515 CDEBUG(D_INFO, "lsm size too small: "
516 "rc < sizeof (*md->lsm) (%d < %d)\n",
517 rc, (int)sizeof(*md->lsm));
518 GOTO(out, rc = -EPROTO);
519 }
520
521 } else if (md->body->valid & OBD_MD_FLDIREA) {
522 int lmvsize;
523 struct lov_mds_md *lmv;
524
525 if(!S_ISDIR(md->body->mode)) {
526 CDEBUG(D_INFO, "OBD_MD_FLDIREA set, should be a "
527 "directory, but is not\n");
528 GOTO(out, rc = -EPROTO);
529 }
530
531 if (md->body->eadatasize == 0) {
532 CDEBUG(D_INFO, "OBD_MD_FLDIREA is set, "
533 "but eadatasize 0\n");
0a3bdb00 534 return -EPROTO;
d7e09d03
PT		 535 }
536 if (md->body->valid & OBD_MD_MEA) {
537 lmvsize = md->body->eadatasize;
538 lmv = req_capsule_server_sized_get(pill, &RMF_MDT_MD,
539 lmvsize);
540 if (!lmv)
541 GOTO(out, rc = -EPROTO);
542
543 rc = obd_unpackmd(md_exp, (void *)&md->mea, lmv,
544 lmvsize);
545 if (rc < 0)
546 GOTO(out, rc);
547
548 if (rc < sizeof(*md->mea)) {
549 CDEBUG(D_INFO, "size too small: "
550 "rc < sizeof(*md->mea) (%d < %d)\n",
551 rc, (int)sizeof(*md->mea));
552 GOTO(out, rc = -EPROTO);
553 }
554 }
555 }
556 rc = 0;
557
558 if (md->body->valid & OBD_MD_FLRMTPERM) {
559 /* remote permission */
560 LASSERT(client_is_remote(exp));
561 md->remote_perm = req_capsule_server_swab_get(pill, &RMF_ACL,
562 lustre_swab_mdt_remote_perm);
563 if (!md->remote_perm)
564 GOTO(out, rc = -EPROTO);
565 }
566 else if (md->body->valid & OBD_MD_FLACL) {
567 /* for ACL, it's possible that FLACL is set but aclsize is zero.
568 * only when aclsize != 0 there's an actual segment for ACL
569 * in reply buffer.
570 */
571 if (md->body->aclsize) {
572 rc = mdc_unpack_acl(req, md);
573 if (rc)
574 GOTO(out, rc);
575#ifdef CONFIG_FS_POSIX_ACL
576 } else {
577 md->posix_acl = NULL;
578#endif
579 }
580 }
581 if (md->body->valid & OBD_MD_FLMDSCAPA) {
582 struct obd_capa *oc = NULL;
583
584 rc = mdc_unpack_capa(NULL, req, &RMF_CAPA1, &oc);
585 if (rc)
586 GOTO(out, rc);
587 md->mds_capa = oc;
588 }
589
590 if (md->body->valid & OBD_MD_FLOSSCAPA) {
591 struct obd_capa *oc = NULL;
592
593 rc = mdc_unpack_capa(NULL, req, &RMF_CAPA2, &oc);
594 if (rc)
595 GOTO(out, rc);
596 md->oss_capa = oc;
597 }
598
d7e09d03
PT		 599out:
600 if (rc) {
601 if (md->oss_capa) {
602 capa_put(md->oss_capa);
603 md->oss_capa = NULL;
604 }
605 if (md->mds_capa) {
606 capa_put(md->mds_capa);
607 md->mds_capa = NULL;
608 }
609#ifdef CONFIG_FS_POSIX_ACL
610 posix_acl_release(md->posix_acl);
611#endif
612 if (md->lsm)
613 obd_free_memmd(dt_exp, &md->lsm);
614 }
615 return rc;
616}
617
618int mdc_free_lustre_md(struct obd_export *exp, struct lustre_md *md)
619{
0a3bdb00 620 return 0;
d7e09d03
PT		 621}
622
623/**
624 * Handles both OPEN and SETATTR RPCs for OPEN-CLOSE and SETATTR-DONE_WRITING
625 * RPC chains.
626 */
627void mdc_replay_open(struct ptlrpc_request *req)
628{
629 struct md_open_data *mod = req->rq_cb_data;
630 struct ptlrpc_request *close_req;
631 struct obd_client_handle *och;
632 struct lustre_handle old;
633 struct mdt_body *body;
d7e09d03
PT		 634
635 if (mod == NULL) {
636 DEBUG_REQ(D_ERROR, req,
637 "Can't properly replay without open data.");
d7e09d03
PT		 638 return;
639 }
640
641 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
642 LASSERT(body != NULL);
643
644 och = mod->mod_och;
645 if (och != NULL) {
646 struct lustre_handle *file_fh;
647
648 LASSERT(och->och_magic == OBD_CLIENT_HANDLE_MAGIC);
649
650 file_fh = &och->och_fh;
651 CDEBUG(D_HA, "updating handle from "LPX64" to "LPX64"\n",
652 file_fh->cookie, body->handle.cookie);
653 old = *file_fh;
654 *file_fh = body->handle;
655 }
656 close_req = mod->mod_close_req;
657 if (close_req != NULL) {
658 __u32 opc = lustre_msg_get_opc(close_req->rq_reqmsg);
659 struct mdt_ioepoch *epoch;
660
661 LASSERT(opc == MDS_CLOSE || opc == MDS_DONE_WRITING);
662 epoch = req_capsule_client_get(&close_req->rq_pill,
663 &RMF_MDT_EPOCH);
664 LASSERT(epoch);
665
666 if (och != NULL)
667 LASSERT(!memcmp(&old, &epoch->handle, sizeof(old)));
668 DEBUG_REQ(D_HA, close_req, "updating close body with new fh");
669 epoch->handle = body->handle;
670 }
d7e09d03
PT		 671}
672
673void mdc_commit_open(struct ptlrpc_request *req)
674{
675 struct md_open_data *mod = req->rq_cb_data;
676 if (mod == NULL)
677 return;
678
679 /**
680 * No need to touch md_open_data::mod_och, it holds a reference on
681 * \var mod and will zero references to each other, \var mod will be
682 * freed after that when md_open_data::mod_och will put the reference.
683 */
684
685 /**
686 * Do not let open request to disappear as it still may be needed
687 * for close rpc to happen (it may happen on evict only, otherwise
688 * ptlrpc_request::rq_replay does not let mdc_commit_open() to be
689 * called), just mark this rpc as committed to distinguish these 2
690 * cases, see mdc_close() for details. The open request reference will
691 * be put along with freeing \var mod.
692 */
693 ptlrpc_request_addref(req);
694 spin_lock(&req->rq_lock);
695 req->rq_committed = 1;
696 spin_unlock(&req->rq_lock);
697 req->rq_cb_data = NULL;
698 obd_mod_put(mod);
699}
700
701int mdc_set_open_replay_data(struct obd_export *exp,
702 struct obd_client_handle *och,
703 struct ptlrpc_request *open_req)
704{
705 struct md_open_data *mod;
706 struct mdt_rec_create *rec;
707 struct mdt_body *body;
708 struct obd_import *imp = open_req->rq_import;
d7e09d03
PT		 709
710 if (!open_req->rq_replay)
0a3bdb00 711 return 0;
d7e09d03
PT		 712
713 rec = req_capsule_client_get(&open_req->rq_pill, &RMF_REC_REINT);
714 body = req_capsule_server_get(&open_req->rq_pill, &RMF_MDT_BODY);
715 LASSERT(rec != NULL);
716 /* Incoming message in my byte order (it's been swabbed). */
717 /* Outgoing messages always in my byte order. */
718 LASSERT(body != NULL);
719
720 /* Only if the import is replayable, we set replay_open data */
721 if (och && imp->imp_replayable) {
722 mod = obd_mod_alloc();
723 if (mod == NULL) {
724 DEBUG_REQ(D_ERROR, open_req,
725 "Can't allocate md_open_data");
0a3bdb00 726 return 0;
d7e09d03
PT		 727 }
728
729 /**
730 * Take a reference on \var mod, to be freed on mdc_close().
731 * It protects \var mod from being freed on eviction (commit
732 * callback is called despite rq_replay flag).
733 * Another reference for \var och.
734 */
735 obd_mod_get(mod);
736 obd_mod_get(mod);
737
738 spin_lock(&open_req->rq_lock);
739 och->och_mod = mod;
740 mod->mod_och = och;
741 mod->mod_open_req = open_req;
742 open_req->rq_cb_data = mod;
743 open_req->rq_commit_cb = mdc_commit_open;
744 spin_unlock(&open_req->rq_lock);
745 }
746
747 rec->cr_fid2 = body->fid1;
748 rec->cr_ioepoch = body->ioepoch;
749 rec->cr_old_handle.cookie = body->handle.cookie;
750 open_req->rq_replay_cb = mdc_replay_open;
751 if (!fid_is_sane(&body->fid1)) {
752 DEBUG_REQ(D_ERROR, open_req, "Saving replay request with "
753 "insane fid");
754 LBUG();
755 }
756
757 DEBUG_REQ(D_RPCTRACE, open_req, "Set up open replay data");
0a3bdb00 758 return 0;
d7e09d03
PT		 759}
760
761int mdc_clear_open_replay_data(struct obd_export *exp,
762 struct obd_client_handle *och)
763{
764 struct md_open_data *mod = och->och_mod;
d7e09d03
PT		 765
766 /**
767 * It is possible to not have \var mod in a case of eviction between
768 * lookup and ll_file_open().
769 **/
770 if (mod == NULL)
0a3bdb00 771 return 0;
d7e09d03
PT		 772
773 LASSERT(mod != LP_POISON);
774
775 mod->mod_och = NULL;
776 och->och_mod = NULL;
777 obd_mod_put(mod);
778
0a3bdb00 779 return 0;
d7e09d03
PT		 780}
781
782/* Prepares the request for the replay by the given reply */
783static void mdc_close_handle_reply(struct ptlrpc_request *req,
784 struct md_op_data *op_data, int rc) {
785 struct mdt_body *repbody;
786 struct mdt_ioepoch *epoch;
787
788 if (req && rc == -EAGAIN) {
789 repbody = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
790 epoch = req_capsule_client_get(&req->rq_pill, &RMF_MDT_EPOCH);
791
792 epoch->flags |= MF_SOM_AU;
793 if (repbody->valid & OBD_MD_FLGETATTRLOCK)
794 op_data->op_flags |= MF_GETATTR_LOCK;
795 }
796}
797
798int mdc_close(struct obd_export *exp, struct md_op_data *op_data,
799 struct md_open_data *mod, struct ptlrpc_request **request)
800{
801 struct obd_device *obd = class_exp2obd(exp);
802 struct ptlrpc_request *req;
48d23e61
JX		 803 struct req_format *req_fmt;
804 int rc;
805 int saved_rc = 0;
806
807
808 req_fmt = &RQF_MDS_CLOSE;
809 if (op_data->op_bias & MDS_HSM_RELEASE) {
810 req_fmt = &RQF_MDS_RELEASE_CLOSE;
811
812 /* allocate a FID for volatile file */
813 rc = mdc_fid_alloc(exp, &op_data->op_fid2, op_data);
814 if (rc < 0) {
815 CERROR("%s: "DFID" failed to allocate FID: %d\n",
816 obd->obd_name, PFID(&op_data->op_fid1), rc);
817 /* save the errcode and proceed to close */
818 saved_rc = rc;
819 }
820 }
d7e09d03
PT		 821
822 *request = NULL;
48d23e61 823 req = ptlrpc_request_alloc(class_exp2cliimp(exp), req_fmt);
d7e09d03 824 if (req == NULL)
0a3bdb00 825 return -ENOMEM;
d7e09d03
PT		 826
827 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
828
829 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_CLOSE);
830 if (rc) {
831 ptlrpc_request_free(req);
0a3bdb00 832 return rc;
d7e09d03
PT		 833 }
834
835 /* To avoid a livelock (bug 7034), we need to send CLOSE RPCs to a
836 * portal whose threads are not taking any DLM locks and are therefore
837 * always progressing */
838 req->rq_request_portal = MDS_READPAGE_PORTAL;
839 ptlrpc_at_set_req_timeout(req);
840
841 /* Ensure that this close's handle is fixed up during replay. */
842 if (likely(mod != NULL)) {
843 LASSERTF(mod->mod_open_req != NULL &&
844 mod->mod_open_req->rq_type != LI_POISON,
845 "POISONED open %p!\n", mod->mod_open_req);
846
847 mod->mod_close_req = req;
848
849 DEBUG_REQ(D_HA, mod->mod_open_req, "matched open");
850 /* We no longer want to preserve this open for replay even
851 * though the open was committed. b=3632, b=3633 */
852 spin_lock(&mod->mod_open_req->rq_lock);
853 mod->mod_open_req->rq_replay = 0;
854 spin_unlock(&mod->mod_open_req->rq_lock);
855 } else {
856 CDEBUG(D_HA, "couldn't find open req; expecting close error\n");
857 }
858
859 mdc_close_pack(req, op_data);
860
861 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
862 obd->u.cli.cl_max_mds_easize);
863 req_capsule_set_size(&req->rq_pill, &RMF_LOGCOOKIES, RCL_SERVER,
864 obd->u.cli.cl_max_mds_cookiesize);
865
866 ptlrpc_request_set_replen(req);
867
868 mdc_get_rpc_lock(obd->u.cli.cl_close_lock, NULL);
869 rc = ptlrpc_queue_wait(req);
870 mdc_put_rpc_lock(obd->u.cli.cl_close_lock, NULL);
871
872 if (req->rq_repmsg == NULL) {
873 CDEBUG(D_RPCTRACE, "request failed to send: %p, %d\n", req,
874 req->rq_status);
875 if (rc == 0)
876 rc = req->rq_status ?: -EIO;
877 } else if (rc == 0 || rc == -EAGAIN) {
878 struct mdt_body *body;
879
880 rc = lustre_msg_get_status(req->rq_repmsg);
881 if (lustre_msg_get_type(req->rq_repmsg) == PTL_RPC_MSG_ERR) {
882 DEBUG_REQ(D_ERROR, req, "type == PTL_RPC_MSG_ERR, err "
883 "= %d", rc);
884 if (rc > 0)
885 rc = -rc;
886 }
887 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
888 if (body == NULL)
889 rc = -EPROTO;
890 } else if (rc == -ESTALE) {
891 /**
892 * it can be allowed error after 3633 if open was committed and
893 * server failed before close was sent. Let's check if mod
894 * exists and return no error in that case
895 */
896 if (mod) {
897 DEBUG_REQ(D_HA, req, "Reset ESTALE = %d", rc);
898 LASSERT(mod->mod_open_req != NULL);
899 if (mod->mod_open_req->rq_committed)
900 rc = 0;
901 }
902 }
903
904 if (mod) {
905 if (rc != 0)
906 mod->mod_close_req = NULL;
907 /* Since now, mod is accessed through open_req only,
908 * thus close req does not keep a reference on mod anymore. */
909 obd_mod_put(mod);
910 }
911 *request = req;
912 mdc_close_handle_reply(req, op_data, rc);
48d23e61 913 return rc < 0 ? rc : saved_rc;
d7e09d03
PT		 914}
915
916int mdc_done_writing(struct obd_export *exp, struct md_op_data *op_data,
917 struct md_open_data *mod)
918{
919 struct obd_device *obd = class_exp2obd(exp);
920 struct ptlrpc_request *req;
921 int rc;
d7e09d03
PT		 922
923 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
924 &RQF_MDS_DONE_WRITING);
925 if (req == NULL)
0a3bdb00 926 return -ENOMEM;
d7e09d03
PT		 927
928 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
929 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_DONE_WRITING);
930 if (rc) {
931 ptlrpc_request_free(req);
0a3bdb00 932 return rc;
d7e09d03
PT		 933 }
934
935 if (mod != NULL) {
936 LASSERTF(mod->mod_open_req != NULL &&
937 mod->mod_open_req->rq_type != LI_POISON,
938 "POISONED setattr %p!\n", mod->mod_open_req);
939
940 mod->mod_close_req = req;
941 DEBUG_REQ(D_HA, mod->mod_open_req, "matched setattr");
942 /* We no longer want to preserve this setattr for replay even
943 * though the open was committed. b=3632, b=3633 */
944 spin_lock(&mod->mod_open_req->rq_lock);
945 mod->mod_open_req->rq_replay = 0;
946 spin_unlock(&mod->mod_open_req->rq_lock);
947 }
948
949 mdc_close_pack(req, op_data);
950 ptlrpc_request_set_replen(req);
951
952 mdc_get_rpc_lock(obd->u.cli.cl_close_lock, NULL);
953 rc = ptlrpc_queue_wait(req);
954 mdc_put_rpc_lock(obd->u.cli.cl_close_lock, NULL);
955
956 if (rc == -ESTALE) {
957 /**
958 * it can be allowed error after 3633 if open or setattr were
959 * committed and server failed before close was sent.
960 * Let's check if mod exists and return no error in that case
961 */
962 if (mod) {
963 LASSERT(mod->mod_open_req != NULL);
964 if (mod->mod_open_req->rq_committed)
965 rc = 0;
966 }
967 }
968
969 if (mod) {
970 if (rc != 0)
971 mod->mod_close_req = NULL;
972 /* Since now, mod is accessed through setattr req only,
973 * thus DW req does not keep a reference on mod anymore. */
974 obd_mod_put(mod);
975 }
976
977 mdc_close_handle_reply(req, op_data, rc);
978 ptlrpc_req_finished(req);
0a3bdb00 979 return rc;
d7e09d03
PT		 980}
981
982
983int mdc_readpage(struct obd_export *exp, struct md_op_data *op_data,
984 struct page **pages, struct ptlrpc_request **request)
985{
986 struct ptlrpc_request *req;
987 struct ptlrpc_bulk_desc *desc;
988 int i;
989 wait_queue_head_t waitq;
990 int resends = 0;
991 struct l_wait_info lwi;
992 int rc;
d7e09d03
PT		 993
994 *request = NULL;
995 init_waitqueue_head(&waitq);
996
997restart_bulk:
998 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_READPAGE);
999 if (req == NULL)
0a3bdb00 1000 return -ENOMEM;
d7e09d03
PT		 1001
1002 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
1003
1004 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_READPAGE);
1005 if (rc) {
1006 ptlrpc_request_free(req);
0a3bdb00 1007 return rc;
d7e09d03
PT		 1008 }
1009
1010 req->rq_request_portal = MDS_READPAGE_PORTAL;
1011 ptlrpc_at_set_req_timeout(req);
1012
1013 desc = ptlrpc_prep_bulk_imp(req, op_data->op_npages, 1, BULK_PUT_SINK,
1014 MDS_BULK_PORTAL);
1015 if (desc == NULL) {
1016 ptlrpc_request_free(req);
0a3bdb00 1017 return -ENOMEM;
d7e09d03
PT		 1018 }
1019
1020 /* NB req now owns desc and will free it when it gets freed */
1021 for (i = 0; i < op_data->op_npages; i++)
1022 ptlrpc_prep_bulk_page_pin(desc, pages[i], 0, PAGE_CACHE_SIZE);
1023
1024 mdc_readdir_pack(req, op_data->op_offset,
1025 PAGE_CACHE_SIZE * op_data->op_npages,
1026 &op_data->op_fid1, op_data->op_capa1);
1027
1028 ptlrpc_request_set_replen(req);
1029 rc = ptlrpc_queue_wait(req);
1030 if (rc) {
1031 ptlrpc_req_finished(req);
1032 if (rc != -ETIMEDOUT)
0a3bdb00 1033 return rc;
d7e09d03
PT		 1034
1035 resends++;
1036 if (!client_should_resend(resends, &exp->exp_obd->u.cli)) {
1037 CERROR("too many resend retries, returning error\n");
0a3bdb00 1038 return -EIO;
d7e09d03
PT		 1039 }
1040 lwi = LWI_TIMEOUT_INTR(cfs_time_seconds(resends), NULL, NULL, NULL);
1041 l_wait_event(waitq, 0, &lwi);
1042
1043 goto restart_bulk;
1044 }
1045
1046 rc = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk,
1047 req->rq_bulk->bd_nob_transferred);
1048 if (rc < 0) {
1049 ptlrpc_req_finished(req);
0a3bdb00 1050 return rc;
d7e09d03
PT		 1051 }
1052
1053 if (req->rq_bulk->bd_nob_transferred & ~LU_PAGE_MASK) {
1054 CERROR("Unexpected # bytes transferred: %d (%ld expected)\n",
1055 req->rq_bulk->bd_nob_transferred,
1056 PAGE_CACHE_SIZE * op_data->op_npages);
1057 ptlrpc_req_finished(req);
0a3bdb00 1058 return -EPROTO;
d7e09d03
PT		 1059 }
1060
1061 *request = req;
0a3bdb00 1062 return 0;
d7e09d03
PT		 1063}
1064
1065static int mdc_statfs(const struct lu_env *env,
1066 struct obd_export *exp, struct obd_statfs *osfs,
1067 __u64 max_age, __u32 flags)
1068{
1069 struct obd_device *obd = class_exp2obd(exp);
1070 struct ptlrpc_request *req;
1071 struct obd_statfs *msfs;
1072 struct obd_import *imp = NULL;
1073 int rc;
d7e09d03
PT		 1074
1075 /*
1076 * Since the request might also come from lprocfs, so we need
1077 * sync this with client_disconnect_export Bug15684
1078 */
1079 down_read(&obd->u.cli.cl_sem);
1080 if (obd->u.cli.cl_import)
1081 imp = class_import_get(obd->u.cli.cl_import);
1082 up_read(&obd->u.cli.cl_sem);
1083 if (!imp)
0a3bdb00 1084 return -ENODEV;
d7e09d03
PT		 1085
1086 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_STATFS,
1087 LUSTRE_MDS_VERSION, MDS_STATFS);
1088 if (req == NULL)
1089 GOTO(output, rc = -ENOMEM);
1090
1091 ptlrpc_request_set_replen(req);
1092
1093 if (flags & OBD_STATFS_NODELAY) {
1094 /* procfs requests not want stay in wait for avoid deadlock */
1095 req->rq_no_resend = 1;
1096 req->rq_no_delay = 1;
1097 }
1098
1099 rc = ptlrpc_queue_wait(req);
1100 if (rc) {
1101 /* check connection error first */
1102 if (imp->imp_connect_error)
1103 rc = imp->imp_connect_error;
1104 GOTO(out, rc);
1105 }
1106
1107 msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
1108 if (msfs == NULL)
1109 GOTO(out, rc = -EPROTO);
1110
1111 *osfs = *msfs;
d7e09d03
PT		 1112out:
1113 ptlrpc_req_finished(req);
1114output:
1115 class_import_put(imp);
1116 return rc;
1117}
1118
1119static int mdc_ioc_fid2path(struct obd_export *exp, struct getinfo_fid2path *gf)
1120{
1121 __u32 keylen, vallen;
1122 void *key;
1123 int rc;
1124
1125 if (gf->gf_pathlen > PATH_MAX)
0a3bdb00 1126 return -ENAMETOOLONG;
d7e09d03 1127 if (gf->gf_pathlen < 2)
0a3bdb00 1128 return -EOVERFLOW;
d7e09d03
PT		 1129
1130 /* Key is KEY_FID2PATH + getinfo_fid2path description */
1131 keylen = cfs_size_round(sizeof(KEY_FID2PATH)) + sizeof(*gf);
1132 OBD_ALLOC(key, keylen);
1133 if (key == NULL)
0a3bdb00 1134 return -ENOMEM;
d7e09d03
PT		 1135 memcpy(key, KEY_FID2PATH, sizeof(KEY_FID2PATH));
1136 memcpy(key + cfs_size_round(sizeof(KEY_FID2PATH)), gf, sizeof(*gf));
1137
1138 CDEBUG(D_IOCTL, "path get "DFID" from "LPU64" #%d\n",
1139 PFID(&gf->gf_fid), gf->gf_recno, gf->gf_linkno);
1140
1141 if (!fid_is_sane(&gf->gf_fid))
1142 GOTO(out, rc = -EINVAL);
1143
1144 /* Val is struct getinfo_fid2path result plus path */
1145 vallen = sizeof(*gf) + gf->gf_pathlen;
1146
1147 rc = obd_get_info(NULL, exp, keylen, key, &vallen, gf, NULL);
1148 if (rc != 0 && rc != -EREMOTE)
1149 GOTO(out, rc);
1150
1151 if (vallen <= sizeof(*gf))
1152 GOTO(out, rc = -EPROTO);
1153 else if (vallen > sizeof(*gf) + gf->gf_pathlen)
1154 GOTO(out, rc = -EOVERFLOW);
1155
1156 CDEBUG(D_IOCTL, "path get "DFID" from "LPU64" #%d\n%s\n",
1157 PFID(&gf->gf_fid), gf->gf_recno, gf->gf_linkno, gf->gf_path);
1158
1159out:
1160 OBD_FREE(key, keylen);
1161 return rc;
1162}
1163
1164static int mdc_ioc_hsm_progress(struct obd_export *exp,
1165 struct hsm_progress_kernel *hpk)
1166{
1167 struct obd_import *imp = class_exp2cliimp(exp);
1168 struct hsm_progress_kernel *req_hpk;
1169 struct ptlrpc_request *req;
1170 int rc;
d7e09d03
PT		 1171
1172 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_PROGRESS,
1173 LUSTRE_MDS_VERSION, MDS_HSM_PROGRESS);
1174 if (req == NULL)
1175 GOTO(out, rc = -ENOMEM);
1176
1177 mdc_pack_body(req, NULL, NULL, OBD_MD_FLRMTPERM, 0, 0, 0);
1178
1179 /* Copy hsm_progress struct */
1180 req_hpk = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_PROGRESS);
1181 if (req_hpk == NULL)
1182 GOTO(out, rc = -EPROTO);
1183
1184 *req_hpk = *hpk;
2d58de78 1185 req_hpk->hpk_errval = lustre_errno_hton(hpk->hpk_errval);
d7e09d03
PT		 1186
1187 ptlrpc_request_set_replen(req);
1188
1189 rc = mdc_queue_wait(req);
1190 GOTO(out, rc);
1191out:
1192 ptlrpc_req_finished(req);
1193 return rc;
1194}
1195
1196static int mdc_ioc_hsm_ct_register(struct obd_import *imp, __u32 archives)
1197{
1198 __u32 *archive_mask;
1199 struct ptlrpc_request *req;
1200 int rc;
d7e09d03
PT		 1201
1202 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_CT_REGISTER,
1203 LUSTRE_MDS_VERSION,
1204 MDS_HSM_CT_REGISTER);
1205 if (req == NULL)
1206 GOTO(out, rc = -ENOMEM);
1207
1208 mdc_pack_body(req, NULL, NULL, OBD_MD_FLRMTPERM, 0, 0, 0);
1209
1210 /* Copy hsm_progress struct */
1211 archive_mask = req_capsule_client_get(&req->rq_pill,
1212 &RMF_MDS_HSM_ARCHIVE);
1213 if (archive_mask == NULL)
1214 GOTO(out, rc = -EPROTO);
1215
1216 *archive_mask = archives;
1217
1218 ptlrpc_request_set_replen(req);
1219
1220 rc = mdc_queue_wait(req);
1221 GOTO(out, rc);
1222out:
1223 ptlrpc_req_finished(req);
1224 return rc;
1225}
1226
1227static int mdc_ioc_hsm_current_action(struct obd_export *exp,
1228 struct md_op_data *op_data)
1229{
1230 struct hsm_current_action *hca = op_data->op_data;
1231 struct hsm_current_action *req_hca;
1232 struct ptlrpc_request *req;
1233 int rc;
d7e09d03
PT		 1234
1235 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1236 &RQF_MDS_HSM_ACTION);
1237 if (req == NULL)
0a3bdb00 1238 return -ENOMEM;
d7e09d03
PT		 1239
1240 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
1241
1242 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_ACTION);
1243 if (rc) {
1244 ptlrpc_request_free(req);
0a3bdb00 1245 return rc;
d7e09d03
PT		 1246 }
1247
1248 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1,
1249 OBD_MD_FLRMTPERM, 0, op_data->op_suppgids[0], 0);
1250
1251 ptlrpc_request_set_replen(req);
1252
1253 rc = mdc_queue_wait(req);
1254 if (rc)
1255 GOTO(out, rc);
1256
1257 req_hca = req_capsule_server_get(&req->rq_pill,
1258 &RMF_MDS_HSM_CURRENT_ACTION);
1259 if (req_hca == NULL)
1260 GOTO(out, rc = -EPROTO);
1261
1262 *hca = *req_hca;
1263
d7e09d03
PT		 1264out:
1265 ptlrpc_req_finished(req);
1266 return rc;
1267}
1268
1269static int mdc_ioc_hsm_ct_unregister(struct obd_import *imp)
1270{
1271 struct ptlrpc_request *req;
1272 int rc;
d7e09d03
PT		 1273
1274 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_CT_UNREGISTER,
1275 LUSTRE_MDS_VERSION,
1276 MDS_HSM_CT_UNREGISTER);
1277 if (req == NULL)
1278 GOTO(out, rc = -ENOMEM);
1279
1280 mdc_pack_body(req, NULL, NULL, OBD_MD_FLRMTPERM, 0, 0, 0);
1281
1282 ptlrpc_request_set_replen(req);
1283
1284 rc = mdc_queue_wait(req);
1285 GOTO(out, rc);
1286out:
1287 ptlrpc_req_finished(req);
1288 return rc;
1289}
1290
1291static int mdc_ioc_hsm_state_get(struct obd_export *exp,
1292 struct md_op_data *op_data)
1293{
1294 struct hsm_user_state *hus = op_data->op_data;
1295 struct hsm_user_state *req_hus;
1296 struct ptlrpc_request *req;
1297 int rc;
d7e09d03
PT		 1298
1299 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1300 &RQF_MDS_HSM_STATE_GET);
1301 if (req == NULL)
0a3bdb00 1302 return -ENOMEM;
d7e09d03
PT		 1303
1304 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
1305
1306 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_STATE_GET);
1307 if (rc != 0) {
1308 ptlrpc_request_free(req);
0a3bdb00 1309 return rc;
d7e09d03
PT		 1310 }
1311
1312 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1,
1313 OBD_MD_FLRMTPERM, 0, op_data->op_suppgids[0], 0);
1314
1315 ptlrpc_request_set_replen(req);
1316
1317 rc = mdc_queue_wait(req);
1318 if (rc)
1319 GOTO(out, rc);
1320
1321 req_hus = req_capsule_server_get(&req->rq_pill, &RMF_HSM_USER_STATE);
1322 if (req_hus == NULL)
1323 GOTO(out, rc = -EPROTO);
1324
1325 *hus = *req_hus;
1326
d7e09d03
PT		 1327out:
1328 ptlrpc_req_finished(req);
1329 return rc;
1330}
1331
1332static int mdc_ioc_hsm_state_set(struct obd_export *exp,
1333 struct md_op_data *op_data)
1334{
1335 struct hsm_state_set *hss = op_data->op_data;
1336 struct hsm_state_set *req_hss;
1337 struct ptlrpc_request *req;
1338 int rc;
d7e09d03
PT		 1339
1340 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1341 &RQF_MDS_HSM_STATE_SET);
1342 if (req == NULL)
0a3bdb00 1343 return -ENOMEM;
d7e09d03
PT		 1344
1345 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
1346
1347 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_STATE_SET);
1348 if (rc) {
1349 ptlrpc_request_free(req);
0a3bdb00 1350 return rc;
d7e09d03
PT		 1351 }
1352
1353 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1,
1354 OBD_MD_FLRMTPERM, 0, op_data->op_suppgids[0], 0);
1355
1356 /* Copy states */
1357 req_hss = req_capsule_client_get(&req->rq_pill, &RMF_HSM_STATE_SET);
1358 if (req_hss == NULL)
1359 GOTO(out, rc = -EPROTO);
1360 *req_hss = *hss;
1361
1362 ptlrpc_request_set_replen(req);
1363
1364 rc = mdc_queue_wait(req);
1365 GOTO(out, rc);
1366
d7e09d03
PT		 1367out:
1368 ptlrpc_req_finished(req);
1369 return rc;
1370}
1371
1372static int mdc_ioc_hsm_request(struct obd_export *exp,
1373 struct hsm_user_request *hur)
1374{
1375 struct obd_import *imp = class_exp2cliimp(exp);
1376 struct ptlrpc_request *req;
1377 struct hsm_request *req_hr;
1378 struct hsm_user_item *req_hui;
1379 char *req_opaque;
1380 int rc;
d7e09d03
PT		 1381
1382 req = ptlrpc_request_alloc(imp, &RQF_MDS_HSM_REQUEST);
1383 if (req == NULL)
1384 GOTO(out, rc = -ENOMEM);
1385
1386 req_capsule_set_size(&req->rq_pill, &RMF_MDS_HSM_USER_ITEM, RCL_CLIENT,
1387 hur->hur_request.hr_itemcount
1388 * sizeof(struct hsm_user_item));
1389 req_capsule_set_size(&req->rq_pill, &RMF_GENERIC_DATA, RCL_CLIENT,
1390 hur->hur_request.hr_data_len);
1391
1392 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_REQUEST);
1393 if (rc) {
1394 ptlrpc_request_free(req);
0a3bdb00 1395 return rc;
d7e09d03
PT		 1396 }
1397
1398 mdc_pack_body(req, NULL, NULL, OBD_MD_FLRMTPERM, 0, 0, 0);
1399
1400 /* Copy hsm_request struct */
1401 req_hr = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_REQUEST);
1402 if (req_hr == NULL)
1403 GOTO(out, rc = -EPROTO);
1404 *req_hr = hur->hur_request;
1405
1406 /* Copy hsm_user_item structs */
1407 req_hui = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_USER_ITEM);
1408 if (req_hui == NULL)
1409 GOTO(out, rc = -EPROTO);
1410 memcpy(req_hui, hur->hur_user_item,
1411 hur->hur_request.hr_itemcount * sizeof(struct hsm_user_item));
1412
1413 /* Copy opaque field */
1414 req_opaque = req_capsule_client_get(&req->rq_pill, &RMF_GENERIC_DATA);
1415 if (req_opaque == NULL)
1416 GOTO(out, rc = -EPROTO);
1417 memcpy(req_opaque, hur_data(hur), hur->hur_request.hr_data_len);
1418
1419 ptlrpc_request_set_replen(req);
1420
1421 rc = mdc_queue_wait(req);
1422 GOTO(out, rc);
1423
1424out:
1425 ptlrpc_req_finished(req);
1426 return rc;
1427}
1428
1429static struct kuc_hdr *changelog_kuc_hdr(char *buf, int len, int flags)
1430{
1431 struct kuc_hdr *lh = (struct kuc_hdr *)buf;
1432
1433 LASSERT(len <= CR_MAXSIZE);
1434
1435 lh->kuc_magic = KUC_MAGIC;
1436 lh->kuc_transport = KUC_TRANSPORT_CHANGELOG;
1437 lh->kuc_flags = flags;
1438 lh->kuc_msgtype = CL_RECORD;
1439 lh->kuc_msglen = len;
1440 return lh;
1441}
1442
1443#define D_CHANGELOG 0
1444
1445struct changelog_show {
1446 __u64 cs_startrec;
1447 __u32 cs_flags;
1448 struct file *cs_fp;
1449 char *cs_buf;
1450 struct obd_device *cs_obd;
1451};
1452
e377988e 1453static int changelog_kkuc_cb(const struct lu_env *env, struct llog_handle *llh,
d7e09d03
PT		 1454 struct llog_rec_hdr *hdr, void *data)
1455{
1456 struct changelog_show *cs = data;
1457 struct llog_changelog_rec *rec = (struct llog_changelog_rec *)hdr;
1458 struct kuc_hdr *lh;
1459 int len, rc;
d7e09d03 1460
e377988e
AD		 1461 if (rec->cr_hdr.lrh_type != CHANGELOG_REC) {
1462 rc = -EINVAL;
1463 CERROR("%s: not a changelog rec %x/%d: rc = %d\n",
1464 cs->cs_obd->obd_name, rec->cr_hdr.lrh_type,
1465 rec->cr.cr_type, rc);
0a3bdb00 1466 return rc;
d7e09d03
PT		 1467 }
1468
1469 if (rec->cr.cr_index < cs->cs_startrec) {
1470 /* Skip entries earlier than what we are interested in */
1471 CDEBUG(D_CHANGELOG, "rec="LPU64" start="LPU64"\n",
1472 rec->cr.cr_index, cs->cs_startrec);
0a3bdb00 1473 return 0;
d7e09d03
PT		 1474 }
1475
1476 CDEBUG(D_CHANGELOG, LPU64" %02d%-5s "LPU64" 0x%x t="DFID" p="DFID
1477 " %.*s\n", rec->cr.cr_index, rec->cr.cr_type,
1478 changelog_type2str(rec->cr.cr_type), rec->cr.cr_time,
1479 rec->cr.cr_flags & CLF_FLAGMASK,
1480 PFID(&rec->cr.cr_tfid), PFID(&rec->cr.cr_pfid),
1481 rec->cr.cr_namelen, changelog_rec_name(&rec->cr));
1482
1483 len = sizeof(*lh) + changelog_rec_size(&rec->cr) + rec->cr.cr_namelen;
1484
1485 /* Set up the message */
1486 lh = changelog_kuc_hdr(cs->cs_buf, len, cs->cs_flags);
1487 memcpy(lh + 1, &rec->cr, len - sizeof(*lh));
1488
1489 rc = libcfs_kkuc_msg_put(cs->cs_fp, lh);
1490 CDEBUG(D_CHANGELOG, "kucmsg fp %p len %d rc %d\n", cs->cs_fp, len,rc);
1491
0a3bdb00 1492 return rc;
d7e09d03
PT		 1493}
1494
1495static int mdc_changelog_send_thread(void *csdata)
1496{
1497 struct changelog_show *cs = csdata;
1498 struct llog_ctxt *ctxt = NULL;
1499 struct llog_handle *llh = NULL;
1500 struct kuc_hdr *kuch;
1501 int rc;
1502
1503 CDEBUG(D_CHANGELOG, "changelog to fp=%p start "LPU64"\n",
1504 cs->cs_fp, cs->cs_startrec);
1505
1506 OBD_ALLOC(cs->cs_buf, CR_MAXSIZE);
1507 if (cs->cs_buf == NULL)
1508 GOTO(out, rc = -ENOMEM);
1509
1510 /* Set up the remote catalog handle */
1511 ctxt = llog_get_context(cs->cs_obd, LLOG_CHANGELOG_REPL_CTXT);
1512 if (ctxt == NULL)
1513 GOTO(out, rc = -ENOENT);
1514 rc = llog_open(NULL, ctxt, &llh, NULL, CHANGELOG_CATALOG,
1515 LLOG_OPEN_EXISTS);
1516 if (rc) {
1517 CERROR("%s: fail to open changelog catalog: rc = %d\n",
1518 cs->cs_obd->obd_name, rc);
1519 GOTO(out, rc);
1520 }
1521 rc = llog_init_handle(NULL, llh, LLOG_F_IS_CAT, NULL);
1522 if (rc) {
1523 CERROR("llog_init_handle failed %d\n", rc);
1524 GOTO(out, rc);
1525 }
1526
e377988e 1527 rc = llog_cat_process(NULL, llh, changelog_kkuc_cb, cs, 0, 0);
d7e09d03
PT		 1528
1529 /* Send EOF no matter what our result */
1530 if ((kuch = changelog_kuc_hdr(cs->cs_buf, sizeof(*kuch),
1531 cs->cs_flags))) {
1532 kuch->kuc_msgtype = CL_EOF;
1533 libcfs_kkuc_msg_put(cs->cs_fp, kuch);
1534 }
1535
1536out:
1537 fput(cs->cs_fp);
1538 if (llh)
1539 llog_cat_close(NULL, llh);
1540 if (ctxt)
1541 llog_ctxt_put(ctxt);
1542 if (cs->cs_buf)
1543 OBD_FREE(cs->cs_buf, CR_MAXSIZE);
1544 OBD_FREE_PTR(cs);
1545 return rc;
1546}
1547
1548static int mdc_ioc_changelog_send(struct obd_device *obd,
1549 struct ioc_changelog *icc)
1550{
1551 struct changelog_show *cs;
1552 int rc;
1553
1554 /* Freed in mdc_changelog_send_thread */
1555 OBD_ALLOC_PTR(cs);
1556 if (!cs)
1557 return -ENOMEM;
1558
1559 cs->cs_obd = obd;
1560 cs->cs_startrec = icc->icc_recno;
1561 /* matching fput in mdc_changelog_send_thread */
1562 cs->cs_fp = fget(icc->icc_id);
1563 cs->cs_flags = icc->icc_flags;
1564
1565 /*
1566 * New thread because we should return to user app before
1567 * writing into our pipe
1568 */
1569 rc = PTR_ERR(kthread_run(mdc_changelog_send_thread, cs,
1570 "mdc_clg_send_thread"));
1571 if (!IS_ERR_VALUE(rc)) {
1572 CDEBUG(D_CHANGELOG, "start changelog thread\n");
1573 return 0;
1574 }
1575
1576 CERROR("Failed to start changelog thread: %d\n", rc);
1577 OBD_FREE_PTR(cs);
1578 return rc;
1579}
1580
1581static int mdc_ioc_hsm_ct_start(struct obd_export *exp,
1582 struct lustre_kernelcomm *lk);
1583
1584static int mdc_quotacheck(struct obd_device *unused, struct obd_export *exp,
1585 struct obd_quotactl *oqctl)
1586{
1587 struct client_obd *cli = &exp->exp_obd->u.cli;
1588 struct ptlrpc_request *req;
1589 struct obd_quotactl *body;
1590 int rc;
d7e09d03
PT		 1591
1592 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
1593 &RQF_MDS_QUOTACHECK, LUSTRE_MDS_VERSION,
1594 MDS_QUOTACHECK);
1595 if (req == NULL)
0a3bdb00 1596 return -ENOMEM;
d7e09d03
PT		 1597
1598 body = req_capsule_client_get(&req->rq_pill, &RMF_OBD_QUOTACTL);
1599 *body = *oqctl;
1600
1601 ptlrpc_request_set_replen(req);
1602
1603 /* the next poll will find -ENODATA, that means quotacheck is
1604 * going on */
1605 cli->cl_qchk_stat = -ENODATA;
1606 rc = ptlrpc_queue_wait(req);
1607 if (rc)
1608 cli->cl_qchk_stat = rc;
1609 ptlrpc_req_finished(req);
0a3bdb00 1610 return rc;
d7e09d03
PT		 1611}
1612
1613static int mdc_quota_poll_check(struct obd_export *exp,
1614 struct if_quotacheck *qchk)
1615{
1616 struct client_obd *cli = &exp->exp_obd->u.cli;
1617 int rc;
d7e09d03
PT		 1618
1619 qchk->obd_uuid = cli->cl_target_uuid;
1620 memcpy(qchk->obd_type, LUSTRE_MDS_NAME, strlen(LUSTRE_MDS_NAME));
1621
1622 rc = cli->cl_qchk_stat;
1623 /* the client is not the previous one */
1624 if (rc == CL_NOT_QUOTACHECKED)
1625 rc = -EINTR;
0a3bdb00 1626 return rc;
d7e09d03
PT		 1627}
1628
1629static int mdc_quotactl(struct obd_device *unused, struct obd_export *exp,
1630 struct obd_quotactl *oqctl)
1631{
1632 struct ptlrpc_request *req;
1633 struct obd_quotactl *oqc;
1634 int rc;
d7e09d03
PT		 1635
1636 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
1637 &RQF_MDS_QUOTACTL, LUSTRE_MDS_VERSION,
1638 MDS_QUOTACTL);
1639 if (req == NULL)
0a3bdb00 1640 return -ENOMEM;
d7e09d03
PT		 1641
1642 oqc = req_capsule_client_get(&req->rq_pill, &RMF_OBD_QUOTACTL);
1643 *oqc = *oqctl;
1644
1645 ptlrpc_request_set_replen(req);
1646 ptlrpc_at_set_req_timeout(req);
1647 req->rq_no_resend = 1;
1648
1649 rc = ptlrpc_queue_wait(req);
1650 if (rc)
1651 CERROR("ptlrpc_queue_wait failed, rc: %d\n", rc);
1652
1653 if (req->rq_repmsg &&
1654 (oqc = req_capsule_server_get(&req->rq_pill, &RMF_OBD_QUOTACTL))) {
1655 *oqctl = *oqc;
1656 } else if (!rc) {
1657 CERROR ("Can't unpack obd_quotactl\n");
1658 rc = -EPROTO;
1659 }
1660 ptlrpc_req_finished(req);
1661
0a3bdb00 1662 return rc;
d7e09d03
PT		 1663}
1664
1665static int mdc_ioc_swap_layouts(struct obd_export *exp,
1666 struct md_op_data *op_data)
1667{
1668 LIST_HEAD(cancels);
1669 struct ptlrpc_request *req;
1670 int rc, count;
1671 struct mdc_swap_layouts *msl, *payload;
d7e09d03
PT		 1672
1673 msl = op_data->op_data;
1674
1675 /* When the MDT will get the MDS_SWAP_LAYOUTS RPC the
1676 * first thing it will do is to cancel the 2 layout
1677 * locks hold by this client.
1678 * So the client must cancel its layout locks on the 2 fids
1679 * with the request RPC to avoid extra RPC round trips
1680 */
1681 count = mdc_resource_get_unused(exp, &op_data->op_fid1, &cancels,
1682 LCK_CR, MDS_INODELOCK_LAYOUT);
1683 count += mdc_resource_get_unused(exp, &op_data->op_fid2, &cancels,
1684 LCK_CR, MDS_INODELOCK_LAYOUT);
1685
1686 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1687 &RQF_MDS_SWAP_LAYOUTS);
1688 if (req == NULL) {
1689 ldlm_lock_list_put(&cancels, l_bl_ast, count);
0a3bdb00 1690 return -ENOMEM;
d7e09d03
PT		 1691 }
1692
1693 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
1694 mdc_set_capa_size(req, &RMF_CAPA2, op_data->op_capa2);
1695
1696 rc = mdc_prep_elc_req(exp, req, MDS_SWAP_LAYOUTS, &cancels, count);
1697 if (rc) {
1698 ptlrpc_request_free(req);
0a3bdb00 1699 return rc;
d7e09d03
PT		 1700 }
1701
1702 mdc_swap_layouts_pack(req, op_data);
1703
1704 payload = req_capsule_client_get(&req->rq_pill, &RMF_SWAP_LAYOUTS);
1705 LASSERT(payload);
1706
1707 *payload = *msl;
1708
1709 ptlrpc_request_set_replen(req);
1710
1711 rc = ptlrpc_queue_wait(req);
1712 if (rc)
1713 GOTO(out, rc);
d7e09d03
PT		 1714
1715out:
1716 ptlrpc_req_finished(req);
1717 return rc;
1718}
1719
1720static int mdc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
1721 void *karg, void *uarg)
1722{
1723 struct obd_device *obd = exp->exp_obd;
1724 struct obd_ioctl_data *data = karg;
1725 struct obd_import *imp = obd->u.cli.cl_import;
1726 struct llog_ctxt *ctxt;
1727 int rc;
d7e09d03
PT		 1728
1729 if (!try_module_get(THIS_MODULE)) {
1730 CERROR("Can't get module. Is it alive?");
1731 return -EINVAL;
1732 }
1733 switch (cmd) {
1734 case OBD_IOC_CHANGELOG_SEND:
1735 rc = mdc_ioc_changelog_send(obd, karg);
1736 GOTO(out, rc);
1737 case OBD_IOC_CHANGELOG_CLEAR: {
1738 struct ioc_changelog *icc = karg;
1739 struct changelog_setinfo cs =
1740 {.cs_recno = icc->icc_recno, .cs_id = icc->icc_id};
1741 rc = obd_set_info_async(NULL, exp, strlen(KEY_CHANGELOG_CLEAR),
1742 KEY_CHANGELOG_CLEAR, sizeof(cs), &cs,
1743 NULL);
1744 GOTO(out, rc);
1745 }
1746 case OBD_IOC_FID2PATH:
1747 rc = mdc_ioc_fid2path(exp, karg);
1748 GOTO(out, rc);
1749 case LL_IOC_HSM_CT_START:
1750 rc = mdc_ioc_hsm_ct_start(exp, karg);
78eb9092
TL		 1751 /* ignore if it was already registered on this MDS. */
1752 if (rc == -EEXIST)
1753 rc = 0;
d7e09d03
PT		 1754 GOTO(out, rc);
1755 case LL_IOC_HSM_PROGRESS:
1756 rc = mdc_ioc_hsm_progress(exp, karg);
1757 GOTO(out, rc);
1758 case LL_IOC_HSM_STATE_GET:
1759 rc = mdc_ioc_hsm_state_get(exp, karg);
1760 GOTO(out, rc);
1761 case LL_IOC_HSM_STATE_SET:
1762 rc = mdc_ioc_hsm_state_set(exp, karg);
c1f3d689 1763 GOTO(out, rc);
d7e09d03
PT		 1764 case LL_IOC_HSM_ACTION:
1765 rc = mdc_ioc_hsm_current_action(exp, karg);
1766 GOTO(out, rc);
1767 case LL_IOC_HSM_REQUEST:
1768 rc = mdc_ioc_hsm_request(exp, karg);
1769 GOTO(out, rc);
1770 case OBD_IOC_CLIENT_RECOVER:
1771 rc = ptlrpc_recover_import(imp, data->ioc_inlbuf1, 0);
1772 if (rc < 0)
1773 GOTO(out, rc);
1774 GOTO(out, rc = 0);
1775 case IOC_OSC_SET_ACTIVE:
1776 rc = ptlrpc_set_import_active(imp, data->ioc_offset);
1777 GOTO(out, rc);
1778 case OBD_IOC_PARSE: {
1779 ctxt = llog_get_context(exp->exp_obd, LLOG_CONFIG_REPL_CTXT);
1780 rc = class_config_parse_llog(NULL, ctxt, data->ioc_inlbuf1,
1781 NULL);
1782 llog_ctxt_put(ctxt);
1783 GOTO(out, rc);
1784 }
1785 case OBD_IOC_LLOG_INFO:
1786 case OBD_IOC_LLOG_PRINT: {
1787 ctxt = llog_get_context(obd, LLOG_CONFIG_REPL_CTXT);
1788 rc = llog_ioctl(NULL, ctxt, cmd, data);
1789 llog_ctxt_put(ctxt);
1790 GOTO(out, rc);
1791 }
1792 case OBD_IOC_POLL_QUOTACHECK:
1793 rc = mdc_quota_poll_check(exp, (struct if_quotacheck *)karg);
1794 GOTO(out, rc);
1795 case OBD_IOC_PING_TARGET:
1796 rc = ptlrpc_obd_ping(obd);
1797 GOTO(out, rc);
1798 /*
1799 * Normally IOC_OBD_STATFS, OBD_IOC_QUOTACTL iocontrol are handled by
1800 * LMV instead of MDC. But when the cluster is upgraded from 1.8,
1801 * there'd be no LMV layer thus we might be called here. Eventually
1802 * this code should be removed.
1803 * bz20731, LU-592.
1804 */
1805 case IOC_OBD_STATFS: {
1806 struct obd_statfs stat_buf = {0};
1807
1808 if (*((__u32 *) data->ioc_inlbuf2) != 0)
1809 GOTO(out, rc = -ENODEV);
1810
1811 /* copy UUID */
1812 if (copy_to_user(data->ioc_pbuf2, obd2cli_tgt(obd),
1813 min((int) data->ioc_plen2,
1814 (int) sizeof(struct obd_uuid))))
1815 GOTO(out, rc = -EFAULT);
1816
1817 rc = mdc_statfs(NULL, obd->obd_self_export, &stat_buf,
1818 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
1819 0);
1820 if (rc != 0)
1821 GOTO(out, rc);
1822
1823 if (copy_to_user(data->ioc_pbuf1, &stat_buf,
1824 min((int) data->ioc_plen1,
1825 (int) sizeof(stat_buf))))
1826 GOTO(out, rc = -EFAULT);
1827
1828 GOTO(out, rc = 0);
1829 }
1830 case OBD_IOC_QUOTACTL: {
1831 struct if_quotactl *qctl = karg;
1832 struct obd_quotactl *oqctl;
1833
1834 OBD_ALLOC_PTR(oqctl);
c1f3d689
JH		 1835 if (oqctl == NULL)
1836 GOTO(out, rc = -ENOMEM);
d7e09d03
PT		 1837
1838 QCTL_COPY(oqctl, qctl);
1839 rc = obd_quotactl(exp, oqctl);
1840 if (rc == 0) {
1841 QCTL_COPY(qctl, oqctl);
1842 qctl->qc_valid = QC_MDTIDX;
1843 qctl->obd_uuid = obd->u.cli.cl_target_uuid;
1844 }
c1f3d689 1845
d7e09d03 1846 OBD_FREE_PTR(oqctl);
c1f3d689 1847 GOTO(out, rc);
d7e09d03 1848 }
c1f3d689
JH		 1849 case LL_IOC_GET_CONNECT_FLAGS:
1850 if (copy_to_user(uarg, exp_connect_flags_ptr(exp),
1851 sizeof(*exp_connect_flags_ptr(exp))))
d7e09d03 1852 GOTO(out, rc = -EFAULT);
c1f3d689
JH		 1853
1854 GOTO(out, rc = 0);
1855 case LL_IOC_LOV_SWAP_LAYOUTS:
d7e09d03 1856 rc = mdc_ioc_swap_layouts(exp, karg);
c1f3d689 1857 GOTO(out, rc);
d7e09d03 1858 default:
c1f3d689 1859 CERROR("unrecognised ioctl: cmd = %#x\n", cmd);
d7e09d03
PT		 1860 GOTO(out, rc = -ENOTTY);
1861 }
1862out:
1863 module_put(THIS_MODULE);
1864
1865 return rc;
1866}
1867
1868int mdc_get_info_rpc(struct obd_export *exp,
1869 obd_count keylen, void *key,
1870 int vallen, void *val)
1871{
1872 struct obd_import *imp = class_exp2cliimp(exp);
1873 struct ptlrpc_request *req;
1874 char *tmp;
1875 int rc = -EINVAL;
d7e09d03
PT		 1876
1877 req = ptlrpc_request_alloc(imp, &RQF_MDS_GET_INFO);
1878 if (req == NULL)
0a3bdb00 1879 return -ENOMEM;
d7e09d03
PT		 1880
1881 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_KEY,
1882 RCL_CLIENT, keylen);
1883 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_VALLEN,
1884 RCL_CLIENT, sizeof(__u32));
1885
1886 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GET_INFO);
1887 if (rc) {
1888 ptlrpc_request_free(req);
0a3bdb00 1889 return rc;
d7e09d03
PT		 1890 }
1891
1892 tmp = req_capsule_client_get(&req->rq_pill, &RMF_GETINFO_KEY);
1893 memcpy(tmp, key, keylen);
1894 tmp = req_capsule_client_get(&req->rq_pill, &RMF_GETINFO_VALLEN);
1895 memcpy(tmp, &vallen, sizeof(__u32));
1896
1897 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_VAL,
1898 RCL_SERVER, vallen);
1899 ptlrpc_request_set_replen(req);
1900
1901 rc = ptlrpc_queue_wait(req);
1902 /* -EREMOTE means the get_info result is partial, and it needs to
1903 * continue on another MDT, see fid2path part in lmv_iocontrol */
1904 if (rc == 0 || rc == -EREMOTE) {
1905 tmp = req_capsule_server_get(&req->rq_pill, &RMF_GETINFO_VAL);
1906 memcpy(val, tmp, vallen);
1907 if (ptlrpc_rep_need_swab(req)) {
1908 if (KEY_IS(KEY_FID2PATH))
1909 lustre_swab_fid2path(val);
1910 }
1911 }
1912 ptlrpc_req_finished(req);
1913
0a3bdb00 1914 return rc;
d7e09d03
PT		 1915}
1916
1917static void lustre_swab_hai(struct hsm_action_item *h)
1918{
1919 __swab32s(&h->hai_len);
1920 __swab32s(&h->hai_action);
1921 lustre_swab_lu_fid(&h->hai_fid);
1922 lustre_swab_lu_fid(&h->hai_dfid);
1923 __swab64s(&h->hai_cookie);
1924 __swab64s(&h->hai_extent.offset);
1925 __swab64s(&h->hai_extent.length);
1926 __swab64s(&h->hai_gid);
1927}
1928
1929static void lustre_swab_hal(struct hsm_action_list *h)
1930{
1931 struct hsm_action_item *hai;
1932 int i;
1933
1934 __swab32s(&h->hal_version);
1935 __swab32s(&h->hal_count);
1936 __swab32s(&h->hal_archive_id);
1937 __swab64s(&h->hal_flags);
1938 hai = hai_zero(h);
18dfaebf 1939 for (i = 0; i < h->hal_count; i++, hai = hai_next(hai))
d7e09d03 1940 lustre_swab_hai(hai);
d7e09d03
PT		 1941}
1942
1943static void lustre_swab_kuch(struct kuc_hdr *l)
1944{
1945 __swab16s(&l->kuc_magic);
1946 /* __u8 l->kuc_transport */
1947 __swab16s(&l->kuc_msgtype);
1948 __swab16s(&l->kuc_msglen);
1949}
1950
1951static int mdc_ioc_hsm_ct_start(struct obd_export *exp,
1952 struct lustre_kernelcomm *lk)
1953{
1954 struct obd_import *imp = class_exp2cliimp(exp);
1955 __u32 archive = lk->lk_data;
1956 int rc = 0;
1957
1958 if (lk->lk_group != KUC_GRP_HSM) {
1959 CERROR("Bad copytool group %d\n", lk->lk_group);
1960 return -EINVAL;
1961 }
1962
1963 CDEBUG(D_HSM, "CT start r%d w%d u%d g%d f%#x\n", lk->lk_rfd, lk->lk_wfd,
1964 lk->lk_uid, lk->lk_group, lk->lk_flags);
1965
1966 if (lk->lk_flags & LK_FLG_STOP) {
d7e09d03 1967 /* Unregister with the coordinator */
78eb9092 1968 rc = mdc_ioc_hsm_ct_unregister(imp);
d7e09d03 1969 } else {
78eb9092 1970 rc = mdc_ioc_hsm_ct_register(imp, archive);
d7e09d03
PT		 1971 }
1972
1973 return rc;
1974}
1975
1976/**
1977 * Send a message to any listening copytools
1978 * @param val KUC message (kuc_hdr + hsm_action_list)
1979 * @param len total length of message
1980 */
1981static int mdc_hsm_copytool_send(int len, void *val)
1982{
1983 struct kuc_hdr *lh = (struct kuc_hdr *)val;
1984 struct hsm_action_list *hal = (struct hsm_action_list *)(lh + 1);
1985 int rc;
d7e09d03
PT		 1986
1987 if (len < sizeof(*lh) + sizeof(*hal)) {
1988 CERROR("Short HSM message %d < %d\n", len,
1989 (int) (sizeof(*lh) + sizeof(*hal)));
0a3bdb00 1990 return -EPROTO;
d7e09d03
PT		 1991 }
1992 if (lh->kuc_magic == __swab16(KUC_MAGIC)) {
1993 lustre_swab_kuch(lh);
1994 lustre_swab_hal(hal);
1995 } else if (lh->kuc_magic != KUC_MAGIC) {
1996 CERROR("Bad magic %x!=%x\n", lh->kuc_magic, KUC_MAGIC);
0a3bdb00 1997 return -EPROTO;
d7e09d03
PT		 1998 }
1999
2000 CDEBUG(D_HSM, " Received message mg=%x t=%d m=%d l=%d actions=%d "
2001 "on %s\n",
2002 lh->kuc_magic, lh->kuc_transport, lh->kuc_msgtype,
2003 lh->kuc_msglen, hal->hal_count, hal->hal_fsname);
2004
2005 /* Broadcast to HSM listeners */
2006 rc = libcfs_kkuc_group_put(KUC_GRP_HSM, lh);
2007
0a3bdb00 2008 return rc;
d7e09d03
PT		 2009}
2010
2011/**
2012 * callback function passed to kuc for re-registering each HSM copytool
2013 * running on MDC, after MDT shutdown/recovery.
2014 * @param data archive id served by the copytool
2015 * @param cb_arg callback argument (obd_import)
2016 */
2017static int mdc_hsm_ct_reregister(__u32 data, void *cb_arg)
2018{
2019 struct obd_import *imp = (struct obd_import *)cb_arg;
2020 __u32 archive = data;
2021 int rc;
2022
2023 CDEBUG(D_HA, "recover copytool registration to MDT (archive=%#x)\n",
2024 archive);
2025 rc = mdc_ioc_hsm_ct_register(imp, archive);
2026
2027 /* ignore error if the copytool is already registered */
2028 return ((rc != 0) && (rc != -EEXIST)) ? rc : 0;
2029}
2030
2031/**
2032 * Re-establish all kuc contexts with MDT
2033 * after MDT shutdown/recovery.
2034 */
2035static int mdc_kuc_reregister(struct obd_import *imp)
2036{
2037 /* re-register HSM agents */
2038 return libcfs_kkuc_group_foreach(KUC_GRP_HSM, mdc_hsm_ct_reregister,
2039 (void *)imp);
2040}
2041
2042int mdc_set_info_async(const struct lu_env *env,
2043 struct obd_export *exp,
2044 obd_count keylen, void *key,
2045 obd_count vallen, void *val,
2046 struct ptlrpc_request_set *set)
2047{
2048 struct obd_import *imp = class_exp2cliimp(exp);
2049 int rc;
d7e09d03
PT		 2050
2051 if (KEY_IS(KEY_READ_ONLY)) {
2052 if (vallen != sizeof(int))
0a3bdb00 2053 return -EINVAL;
d7e09d03
PT		 2054
2055 spin_lock(&imp->imp_lock);
2056 if (*((int *)val)) {
2057 imp->imp_connect_flags_orig |= OBD_CONNECT_RDONLY;
2058 imp->imp_connect_data.ocd_connect_flags |=
2059 OBD_CONNECT_RDONLY;
2060 } else {
2061 imp->imp_connect_flags_orig &= ~OBD_CONNECT_RDONLY;
2062 imp->imp_connect_data.ocd_connect_flags &=
2063 ~OBD_CONNECT_RDONLY;
2064 }
2065 spin_unlock(&imp->imp_lock);
2066
2067 rc = do_set_info_async(imp, MDS_SET_INFO, LUSTRE_MDS_VERSION,
2068 keylen, key, vallen, val, set);
0a3bdb00 2069 return rc;
d7e09d03
PT		 2070 }
2071 if (KEY_IS(KEY_SPTLRPC_CONF)) {
2072 sptlrpc_conf_client_adapt(exp->exp_obd);
0a3bdb00 2073 return 0;
d7e09d03
PT		 2074 }
2075 if (KEY_IS(KEY_FLUSH_CTX)) {
2076 sptlrpc_import_flush_my_ctx(imp);
0a3bdb00 2077 return 0;
d7e09d03 2078 }
d7e09d03
PT		 2079 if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
2080 rc = do_set_info_async(imp, MDS_SET_INFO, LUSTRE_MDS_VERSION,
2081 keylen, key, vallen, val, set);
0a3bdb00 2082 return rc;
d7e09d03
PT		 2083 }
2084 if (KEY_IS(KEY_HSM_COPYTOOL_SEND)) {
2085 rc = mdc_hsm_copytool_send(vallen, val);
0a3bdb00 2086 return rc;
d7e09d03
PT		 2087 }
2088
2089 CERROR("Unknown key %s\n", (char *)key);
0a3bdb00 2090 return -EINVAL;
d7e09d03
PT		 2091}
2092
2093int mdc_get_info(const struct lu_env *env, struct obd_export *exp,
2094 __u32 keylen, void *key, __u32 *vallen, void *val,
2095 struct lov_stripe_md *lsm)
2096{
2097 int rc = -EINVAL;
2098
2099 if (KEY_IS(KEY_MAX_EASIZE)) {
2100 int mdsize, *max_easize;
2101
2102 if (*vallen != sizeof(int))
0a3bdb00 2103 return -EINVAL;
d7e09d03
PT		 2104 mdsize = *(int*)val;
2105 if (mdsize > exp->exp_obd->u.cli.cl_max_mds_easize)
2106 exp->exp_obd->u.cli.cl_max_mds_easize = mdsize;
2107 max_easize = val;
2108 *max_easize = exp->exp_obd->u.cli.cl_max_mds_easize;
0a3bdb00 2109 return 0;
d7e09d03
PT		 2110 } else if (KEY_IS(KEY_CONN_DATA)) {
2111 struct obd_import *imp = class_exp2cliimp(exp);
2112 struct obd_connect_data *data = val;
2113
2114 if (*vallen != sizeof(*data))
0a3bdb00 2115 return -EINVAL;
d7e09d03
PT		 2116
2117 *data = imp->imp_connect_data;
0a3bdb00 2118 return 0;
d7e09d03
PT		 2119 } else if (KEY_IS(KEY_TGT_COUNT)) {
2120 *((int *)val) = 1;
0a3bdb00 2121 return 0;
d7e09d03
PT		 2122 }
2123
2124 rc = mdc_get_info_rpc(exp, keylen, key, *vallen, val);
2125
0a3bdb00 2126 return rc;
d7e09d03
PT		 2127}
2128
2129static int mdc_pin(struct obd_export *exp, const struct lu_fid *fid,
2130 struct obd_capa *oc, struct obd_client_handle *handle,
2131 int flags)
2132{
2133 struct ptlrpc_request *req;
2134 struct mdt_body *body;
2135 int rc;
d7e09d03
PT		 2136
2137 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_PIN);
2138 if (req == NULL)
0a3bdb00 2139 return -ENOMEM;
d7e09d03
PT		 2140
2141 mdc_set_capa_size(req, &RMF_CAPA1, oc);
2142
2143 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_PIN);
2144 if (rc) {
2145 ptlrpc_request_free(req);
0a3bdb00 2146 return rc;
d7e09d03
PT		 2147 }
2148
2149 mdc_pack_body(req, fid, oc, 0, 0, -1, flags);
2150
2151 ptlrpc_request_set_replen(req);
2152
2153 mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
2154 rc = ptlrpc_queue_wait(req);
2155 mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
2156 if (rc) {
2157 CERROR("Pin failed: %d\n", rc);
2158 GOTO(err_out, rc);
2159 }
2160
2161 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
2162 if (body == NULL)
2163 GOTO(err_out, rc = -EPROTO);
2164
2165 handle->och_fh = body->handle;
2166 handle->och_magic = OBD_CLIENT_HANDLE_MAGIC;
2167
2168 handle->och_mod = obd_mod_alloc();
2169 if (handle->och_mod == NULL) {
2170 DEBUG_REQ(D_ERROR, req, "can't allocate md_open_data");
2171 GOTO(err_out, rc = -ENOMEM);
2172 }
2173 handle->och_mod->mod_open_req = req; /* will be dropped by unpin */
2174
0a3bdb00 2175 return 0;
d7e09d03
PT		 2176
2177err_out:
2178 ptlrpc_req_finished(req);
0a3bdb00 2179 return rc;
d7e09d03
PT		 2180}
2181
2182static int mdc_unpin(struct obd_export *exp, struct obd_client_handle *handle,
2183 int flag)
2184{
2185 struct ptlrpc_request *req;
2186 struct mdt_body *body;
2187 int rc;
d7e09d03
PT		 2188
2189 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), &RQF_MDS_UNPIN,
2190 LUSTRE_MDS_VERSION, MDS_UNPIN);
2191 if (req == NULL)
0a3bdb00 2192 return -ENOMEM;
d7e09d03
PT		 2193
2194 body = req_capsule_client_get(&req->rq_pill, &RMF_MDT_BODY);
2195 body->handle = handle->och_fh;
2196 body->flags = flag;
2197
2198 ptlrpc_request_set_replen(req);
2199
2200 mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
2201 rc = ptlrpc_queue_wait(req);
2202 mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
2203
2204 if (rc != 0)
2205 CERROR("Unpin failed: %d\n", rc);
2206
2207 ptlrpc_req_finished(req);
2208 ptlrpc_req_finished(handle->och_mod->mod_open_req);
2209
2210 obd_mod_put(handle->och_mod);
0a3bdb00 2211 return rc;
d7e09d03
PT		 2212}
2213
2214int mdc_sync(struct obd_export *exp, const struct lu_fid *fid,
2215 struct obd_capa *oc, struct ptlrpc_request **request)
2216{
2217 struct ptlrpc_request *req;
2218 int rc;
d7e09d03
PT		 2219
2220 *request = NULL;
2221 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_SYNC);
2222 if (req == NULL)
0a3bdb00 2223 return -ENOMEM;
d7e09d03
PT		 2224
2225 mdc_set_capa_size(req, &RMF_CAPA1, oc);
2226
2227 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_SYNC);
2228 if (rc) {
2229 ptlrpc_request_free(req);
0a3bdb00 2230 return rc;
d7e09d03
PT		 2231 }
2232
2233 mdc_pack_body(req, fid, oc, 0, 0, -1, 0);
2234
2235 ptlrpc_request_set_replen(req);
2236
2237 rc = ptlrpc_queue_wait(req);
2238 if (rc)
2239 ptlrpc_req_finished(req);
2240 else
2241 *request = req;
0a3bdb00 2242 return rc;
d7e09d03
PT		 2243}
2244
2245static int mdc_import_event(struct obd_device *obd, struct obd_import *imp,
2246 enum obd_import_event event)
2247{
2248 int rc = 0;
2249
2250 LASSERT(imp->imp_obd == obd);
2251
2252 switch (event) {
2253 case IMP_EVENT_DISCON: {
2254#if 0
2255 /* XXX Pass event up to OBDs stack. used only for FLD now */
2256 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_DISCON, NULL);
2257#endif
2258 break;
2259 }
2260 case IMP_EVENT_INACTIVE: {
2261 struct client_obd *cli = &obd->u.cli;
2262 /*
2263 * Flush current sequence to make client obtain new one
2264 * from server in case of disconnect/reconnect.
2265 */
2266 if (cli->cl_seq != NULL)
2267 seq_client_flush(cli->cl_seq);
2268
2269 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_INACTIVE, NULL);
2270 break;
2271 }
2272 case IMP_EVENT_INVALIDATE: {
2273 struct ldlm_namespace *ns = obd->obd_namespace;
2274
2275 ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY);
2276
2277 break;
2278 }
2279 case IMP_EVENT_ACTIVE:
2280 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVE, NULL);
78eb9092 2281 /* redo the kuc registration after reconnecting */
d7e09d03
PT		 2282 if (rc == 0)
2283 rc = mdc_kuc_reregister(imp);
2284 break;
2285 case IMP_EVENT_OCD:
2286 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_OCD, NULL);
2287 break;
2288 case IMP_EVENT_DEACTIVATE:
2289 case IMP_EVENT_ACTIVATE:
2290 break;
2291 default:
2292 CERROR("Unknown import event %x\n", event);
2293 LBUG();
2294 }
0a3bdb00 2295 return rc;
d7e09d03
PT		 2296}
2297
2298int mdc_fid_alloc(struct obd_export *exp, struct lu_fid *fid,
2299 struct md_op_data *op_data)
2300{
2301 struct client_obd *cli = &exp->exp_obd->u.cli;
2302 struct lu_client_seq *seq = cli->cl_seq;
29aaf496 2303
0a3bdb00 2304 return seq_client_alloc_fid(NULL, seq, fid);
d7e09d03
PT		 2305}
2306
2307struct obd_uuid *mdc_get_uuid(struct obd_export *exp) {
2308 struct client_obd *cli = &exp->exp_obd->u.cli;
2309 return &cli->cl_target_uuid;
2310}
2311
2312/**
2313 * Determine whether the lock can be canceled before replaying it during
2314 * recovery, non zero value will be return if the lock can be canceled,
2315 * or zero returned for not
2316 */
2317static int mdc_cancel_for_recovery(struct ldlm_lock *lock)
2318{
2319 if (lock->l_resource->lr_type != LDLM_IBITS)
0a3bdb00 2320 return 0;
d7e09d03
PT		 2321
2322 /* FIXME: if we ever get into a situation where there are too many
2323 * opened files with open locks on a single node, then we really
2324 * should replay these open locks to reget it */
2325 if (lock->l_policy_data.l_inodebits.bits & MDS_INODELOCK_OPEN)
0a3bdb00 2326 return 0;
d7e09d03 2327
0a3bdb00 2328 return 1;
d7e09d03
PT		 2329}
2330
2331static int mdc_resource_inode_free(struct ldlm_resource *res)
2332{
2333 if (res->lr_lvb_inode)
2334 res->lr_lvb_inode = NULL;
2335
2336 return 0;
2337}
2338
2339struct ldlm_valblock_ops inode_lvbo = {
805e517a 2340 .lvbo_free = mdc_resource_inode_free,
d7e09d03
PT		 2341};
2342
2343static int mdc_setup(struct obd_device *obd, struct lustre_cfg *cfg)
2344{
2345 struct client_obd *cli = &obd->u.cli;
2346 struct lprocfs_static_vars lvars = { 0 };
2347 int rc;
d7e09d03
PT		 2348
2349 OBD_ALLOC(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
2350 if (!cli->cl_rpc_lock)
0a3bdb00 2351 return -ENOMEM;
d7e09d03
PT		 2352 mdc_init_rpc_lock(cli->cl_rpc_lock);
2353
2354 ptlrpcd_addref();
2355
2356 OBD_ALLOC(cli->cl_close_lock, sizeof (*cli->cl_close_lock));
2357 if (!cli->cl_close_lock)
2358 GOTO(err_rpc_lock, rc = -ENOMEM);
2359 mdc_init_rpc_lock(cli->cl_close_lock);
2360
2361 rc = client_obd_setup(obd, cfg);
2362 if (rc)
2363 GOTO(err_close_lock, rc);
2364 lprocfs_mdc_init_vars(&lvars);
2365 lprocfs_obd_setup(obd, lvars.obd_vars);
2366 sptlrpc_lprocfs_cliobd_attach(obd);
2367 ptlrpc_lprocfs_register_obd(obd);
2368
2369 ns_register_cancel(obd->obd_namespace, mdc_cancel_for_recovery);
2370
2371 obd->obd_namespace->ns_lvbo = &inode_lvbo;
2372
2373 rc = obd_llog_init(obd, &obd->obd_olg, obd, NULL);
2374 if (rc) {
2375 mdc_cleanup(obd);
2376 CERROR("failed to setup llogging subsystems\n");
2377 }
2378
0a3bdb00 2379 return rc;
d7e09d03
PT		 2380
2381err_close_lock:
2382 OBD_FREE(cli->cl_close_lock, sizeof (*cli->cl_close_lock));
2383err_rpc_lock:
2384 OBD_FREE(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
2385 ptlrpcd_decref();
0a3bdb00 2386 return rc;
d7e09d03
PT		 2387}
2388
2389/* Initialize the default and maximum LOV EA and cookie sizes. This allows
2390 * us to make MDS RPCs with large enough reply buffers to hold the
2391 * maximum-sized (= maximum striped) EA and cookie without having to
2392 * calculate this (via a call into the LOV + OSCs) each time we make an RPC. */
2393static int mdc_init_ea_size(struct obd_export *exp, int easize,
2394 int def_easize, int cookiesize)
2395{
2396 struct obd_device *obd = exp->exp_obd;
2397 struct client_obd *cli = &obd->u.cli;
d7e09d03
PT		 2398
2399 if (cli->cl_max_mds_easize < easize)
2400 cli->cl_max_mds_easize = easize;
2401
2402 if (cli->cl_default_mds_easize < def_easize)
2403 cli->cl_default_mds_easize = def_easize;
2404
2405 if (cli->cl_max_mds_cookiesize < cookiesize)
2406 cli->cl_max_mds_cookiesize = cookiesize;
2407
0a3bdb00 2408 return 0;
d7e09d03
PT		 2409}
2410
2411static int mdc_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
2412{
2413 int rc = 0;
d7e09d03
PT		 2414
2415 switch (stage) {
2416 case OBD_CLEANUP_EARLY:
2417 break;
2418 case OBD_CLEANUP_EXPORTS:
2419 /* Failsafe, ok if racy */
2420 if (obd->obd_type->typ_refcnt <= 1)
2421 libcfs_kkuc_group_rem(0, KUC_GRP_HSM);
2422
2423 obd_cleanup_client_import(obd);
2424 ptlrpc_lprocfs_unregister_obd(obd);
2425 lprocfs_obd_cleanup(obd);
2426
2427 rc = obd_llog_finish(obd, 0);
2428 if (rc != 0)
2429 CERROR("failed to cleanup llogging subsystems\n");
2430 break;
2431 }
0a3bdb00 2432 return rc;
d7e09d03
PT		 2433}
2434
2435static int mdc_cleanup(struct obd_device *obd)
2436{
2437 struct client_obd *cli = &obd->u.cli;
2438
2439 OBD_FREE(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
2440 OBD_FREE(cli->cl_close_lock, sizeof (*cli->cl_close_lock));
2441
2442 ptlrpcd_decref();
2443
2444 return client_obd_cleanup(obd);
2445}
2446
2447
2448static int mdc_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
2449 struct obd_device *tgt, int *index)
2450{
2451 struct llog_ctxt *ctxt;
2452 int rc;
2453
d7e09d03
PT		 2454 LASSERT(olg == &obd->obd_olg);
2455
2456 rc = llog_setup(NULL, obd, olg, LLOG_CHANGELOG_REPL_CTXT, tgt,
2457 &llog_client_ops);
2458 if (rc)
0a3bdb00 2459 return rc;
d7e09d03
PT		 2460
2461 ctxt = llog_group_get_ctxt(olg, LLOG_CHANGELOG_REPL_CTXT);
2462 llog_initiator_connect(ctxt);
2463 llog_ctxt_put(ctxt);
2464
0a3bdb00 2465 return 0;
d7e09d03
PT		 2466}
2467
2468static int mdc_llog_finish(struct obd_device *obd, int count)
2469{
2470 struct llog_ctxt *ctxt;
2471
d7e09d03
PT		 2472 ctxt = llog_get_context(obd, LLOG_CHANGELOG_REPL_CTXT);
2473 if (ctxt)
2474 llog_cleanup(NULL, ctxt);
2475
0a3bdb00 2476 return 0;
d7e09d03
PT		 2477}
2478
2479static int mdc_process_config(struct obd_device *obd, obd_count len, void *buf)
2480{
2481 struct lustre_cfg *lcfg = buf;
2482 struct lprocfs_static_vars lvars = { 0 };
2483 int rc = 0;
2484
2485 lprocfs_mdc_init_vars(&lvars);
2486 switch (lcfg->lcfg_command) {
2487 default:
2488 rc = class_process_proc_param(PARAM_MDC, lvars.obd_vars,
2489 lcfg, obd);
2490 if (rc > 0)
2491 rc = 0;
2492 break;
2493 }
2494 return(rc);
2495}
2496
2497
2498/* get remote permission for current user on fid */
2499int mdc_get_remote_perm(struct obd_export *exp, const struct lu_fid *fid,
2500 struct obd_capa *oc, __u32 suppgid,
2501 struct ptlrpc_request **request)
2502{
2503 struct ptlrpc_request *req;
2504 int rc;
d7e09d03
PT		 2505
2506 LASSERT(client_is_remote(exp));
2507
2508 *request = NULL;
2509 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_GETATTR);
2510 if (req == NULL)
0a3bdb00 2511 return -ENOMEM;
d7e09d03
PT		 2512
2513 mdc_set_capa_size(req, &RMF_CAPA1, oc);
2514
2515 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR);
2516 if (rc) {
2517 ptlrpc_request_free(req);
0a3bdb00 2518 return rc;
d7e09d03
PT		 2519 }
2520
2521 mdc_pack_body(req, fid, oc, OBD_MD_FLRMTPERM, 0, suppgid, 0);
2522
2523 req_capsule_set_size(&req->rq_pill, &RMF_ACL, RCL_SERVER,
2524 sizeof(struct mdt_remote_perm));
2525
2526 ptlrpc_request_set_replen(req);
2527
2528 rc = ptlrpc_queue_wait(req);
2529 if (rc)
2530 ptlrpc_req_finished(req);
2531 else
2532 *request = req;
0a3bdb00 2533 return rc;
d7e09d03
PT		 2534}
2535
2536static int mdc_interpret_renew_capa(const struct lu_env *env,
2537 struct ptlrpc_request *req, void *args,
2538 int status)
2539{
2540 struct mdc_renew_capa_args *ra = args;
2541 struct mdt_body *body = NULL;
2542 struct lustre_capa *capa;
d7e09d03
PT		 2543
2544 if (status)
2545 GOTO(out, capa = ERR_PTR(status));
2546
2547 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
2548 if (body == NULL)
2549 GOTO(out, capa = ERR_PTR(-EFAULT));
2550
2551 if ((body->valid & OBD_MD_FLOSSCAPA) == 0)
2552 GOTO(out, capa = ERR_PTR(-ENOENT));
2553
2554 capa = req_capsule_server_get(&req->rq_pill, &RMF_CAPA2);
2555 if (!capa)
2556 GOTO(out, capa = ERR_PTR(-EFAULT));
d7e09d03
PT		 2557out:
2558 ra->ra_cb(ra->ra_oc, capa);
2559 return 0;
2560}
2561
2562static int mdc_renew_capa(struct obd_export *exp, struct obd_capa *oc,
2563 renew_capa_cb_t cb)
2564{
2565 struct ptlrpc_request *req;
2566 struct mdc_renew_capa_args *ra;
d7e09d03
PT		 2567
2568 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), &RQF_MDS_GETATTR,
2569 LUSTRE_MDS_VERSION, MDS_GETATTR);
2570 if (req == NULL)
0a3bdb00 2571 return -ENOMEM;
d7e09d03
PT		 2572
2573 /* NB, OBD_MD_FLOSSCAPA is set here, but it doesn't necessarily mean the
2574 * capa to renew is oss capa.
2575 */
2576 mdc_pack_body(req, &oc->c_capa.lc_fid, oc, OBD_MD_FLOSSCAPA, 0, -1, 0);
2577 ptlrpc_request_set_replen(req);
2578
2579 CLASSERT(sizeof(*ra) <= sizeof(req->rq_async_args));
2580 ra = ptlrpc_req_async_args(req);
2581 ra->ra_oc = oc;
2582 ra->ra_cb = cb;
2583 req->rq_interpret_reply = mdc_interpret_renew_capa;
2584 ptlrpcd_add_req(req, PDL_POLICY_LOCAL, -1);
0a3bdb00 2585 return 0;
d7e09d03
PT		 2586}
2587
d7e09d03
PT		 2588struct obd_ops mdc_obd_ops = {
2589 .o_owner = THIS_MODULE,
2590 .o_setup = mdc_setup,
2591 .o_precleanup = mdc_precleanup,
2592 .o_cleanup = mdc_cleanup,
2593 .o_add_conn = client_import_add_conn,
2594 .o_del_conn = client_import_del_conn,
a7c6d5a6 2595 .o_connect = client_connect_import,
d7e09d03
PT		 2596 .o_disconnect = client_disconnect_export,
2597 .o_iocontrol = mdc_iocontrol,
2598 .o_set_info_async = mdc_set_info_async,
2599 .o_statfs = mdc_statfs,
2600 .o_pin = mdc_pin,
2601 .o_unpin = mdc_unpin,
2602 .o_fid_init = client_fid_init,
2603 .o_fid_fini = client_fid_fini,
2604 .o_fid_alloc = mdc_fid_alloc,
2605 .o_import_event = mdc_import_event,
2606 .o_llog_init = mdc_llog_init,
2607 .o_llog_finish = mdc_llog_finish,
2608 .o_get_info = mdc_get_info,
2609 .o_process_config = mdc_process_config,
2610 .o_get_uuid = mdc_get_uuid,
2611 .o_quotactl = mdc_quotactl,
2612 .o_quotacheck = mdc_quotacheck
2613};
2614
2615struct md_ops mdc_md_ops = {
2616 .m_getstatus = mdc_getstatus,
2617 .m_null_inode = mdc_null_inode,
2618 .m_find_cbdata = mdc_find_cbdata,
2619 .m_close = mdc_close,
2620 .m_create = mdc_create,
2621 .m_done_writing = mdc_done_writing,
2622 .m_enqueue = mdc_enqueue,
2623 .m_getattr = mdc_getattr,
2624 .m_getattr_name = mdc_getattr_name,
2625 .m_intent_lock = mdc_intent_lock,
2626 .m_link = mdc_link,
2627 .m_is_subdir = mdc_is_subdir,
2628 .m_rename = mdc_rename,
2629 .m_setattr = mdc_setattr,
2630 .m_setxattr = mdc_setxattr,
2631 .m_getxattr = mdc_getxattr,
2632 .m_sync = mdc_sync,
2633 .m_readpage = mdc_readpage,
2634 .m_unlink = mdc_unlink,
2635 .m_cancel_unused = mdc_cancel_unused,
2636 .m_init_ea_size = mdc_init_ea_size,
2637 .m_set_lock_data = mdc_set_lock_data,
2638 .m_lock_match = mdc_lock_match,
2639 .m_get_lustre_md = mdc_get_lustre_md,
2640 .m_free_lustre_md = mdc_free_lustre_md,
2641 .m_set_open_replay_data = mdc_set_open_replay_data,
2642 .m_clear_open_replay_data = mdc_clear_open_replay_data,
2643 .m_renew_capa = mdc_renew_capa,
2644 .m_unpack_capa = mdc_unpack_capa,
2645 .m_get_remote_perm = mdc_get_remote_perm,
2646 .m_intent_getattr_async = mdc_intent_getattr_async,
2647 .m_revalidate_lock = mdc_revalidate_lock
2648};
2649
2650int __init mdc_init(void)
2651{
2652 int rc;
2653 struct lprocfs_static_vars lvars = { 0 };
2654 lprocfs_mdc_init_vars(&lvars);
2655
2656 rc = class_register_type(&mdc_obd_ops, &mdc_md_ops, lvars.module_vars,
2657 LUSTRE_MDC_NAME, NULL);
0a3bdb00 2658 return rc;
d7e09d03
PT		 2659}
2660
2661static void /*__exit*/ mdc_exit(void)
2662{
2663 class_unregister_type(LUSTRE_MDC_NAME);
2664}
2665
2666MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
2667MODULE_DESCRIPTION("Lustre Metadata Client");
2668MODULE_LICENSE("GPL");
2669
2670module_init(mdc_init);
2671module_exit(mdc_exit);
Linux kernel - Deliverables
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