projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
staging: lustre: replace c99 style comments with C89
[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
05932307
GKH		 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"
d7e09d03
PT		 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,
b0f5aad5 139 "root fid="DFID", last_committed=%llu\n",
d7e09d03
PT		 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
301af906
SM		 329static int mdc_xattr_common(struct obd_export *exp,
330 const struct req_format *fmt,
d7e09d03
PT		 331 const struct lu_fid *fid,
332 struct obd_capa *oc, int opcode, obd_valid valid,
333 const char *xattr_name, const char *input,
334 int input_size, int output_size, int flags,
335 __u32 suppgid, struct ptlrpc_request **request)
336{
337 struct ptlrpc_request *req;
338 int xattr_namelen = 0;
339 char *tmp;
340 int rc;
d7e09d03
PT		 341
342 *request = NULL;
343 req = ptlrpc_request_alloc(class_exp2cliimp(exp), fmt);
344 if (req == NULL)
0a3bdb00 345 return -ENOMEM;
d7e09d03
PT		 346
347 mdc_set_capa_size(req, &RMF_CAPA1, oc);
348 if (xattr_name) {
349 xattr_namelen = strlen(xattr_name) + 1;
350 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
351 xattr_namelen);
352 }
353 if (input_size) {
354 LASSERT(input);
355 req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_CLIENT,
356 input_size);
357 }
358
e93a3082
AP		 359 /* Flush local XATTR locks to get rid of a possible cancel RPC */
360 if (opcode == MDS_REINT && fid_is_sane(fid) &&
361 exp->exp_connect_data.ocd_ibits_known & MDS_INODELOCK_XATTR) {
362 LIST_HEAD(cancels);
363 int count;
364
365 /* Without that packing would fail */
366 if (input_size == 0)
367 req_capsule_set_size(&req->rq_pill, &RMF_EADATA,
368 RCL_CLIENT, 0);
369
370 count = mdc_resource_get_unused(exp, fid,
371 &cancels, LCK_EX,
372 MDS_INODELOCK_XATTR);
373
374 rc = mdc_prep_elc_req(exp, req, MDS_REINT, &cancels, count);
375 if (rc) {
376 ptlrpc_request_free(req);
377 return rc;
378 }
379 } else {
380 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, opcode);
381 if (rc) {
382 ptlrpc_request_free(req);
383 return rc;
384 }
d7e09d03
PT		 385 }
386
387 if (opcode == MDS_REINT) {
388 struct mdt_rec_setxattr *rec;
389
390 CLASSERT(sizeof(struct mdt_rec_setxattr) ==
391 sizeof(struct mdt_rec_reint));
392 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
393 rec->sx_opcode = REINT_SETXATTR;
4b1a25f0
PT		 394 rec->sx_fsuid = from_kuid(&init_user_ns, current_fsuid());
395 rec->sx_fsgid = from_kgid(&init_user_ns, current_fsgid());
d7e09d03
PT		 396 rec->sx_cap = cfs_curproc_cap_pack();
397 rec->sx_suppgid1 = suppgid;
398 rec->sx_suppgid2 = -1;
399 rec->sx_fid = *fid;
400 rec->sx_valid = valid | OBD_MD_FLCTIME;
7264b8a5 401 rec->sx_time = get_seconds();
d7e09d03
PT		 402 rec->sx_size = output_size;
403 rec->sx_flags = flags;
404
405 mdc_pack_capa(req, &RMF_CAPA1, oc);
406 } else {
407 mdc_pack_body(req, fid, oc, valid, output_size, suppgid, flags);
408 }
409
410 if (xattr_name) {
411 tmp = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
412 memcpy(tmp, xattr_name, xattr_namelen);
413 }
414 if (input_size) {
415 tmp = req_capsule_client_get(&req->rq_pill, &RMF_EADATA);
416 memcpy(tmp, input, input_size);
417 }
418
419 if (req_capsule_has_field(&req->rq_pill, &RMF_EADATA, RCL_SERVER))
420 req_capsule_set_size(&req->rq_pill, &RMF_EADATA,
421 RCL_SERVER, output_size);
422 ptlrpc_request_set_replen(req);
423
424 /* make rpc */
425 if (opcode == MDS_REINT)
426 mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
427
428 rc = ptlrpc_queue_wait(req);
429
430 if (opcode == MDS_REINT)
431 mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
432
433 if (rc)
434 ptlrpc_req_finished(req);
435 else
436 *request = req;
0a3bdb00 437 return rc;
d7e09d03
PT		 438}
439
440int mdc_setxattr(struct obd_export *exp, const struct lu_fid *fid,
441 struct obd_capa *oc, obd_valid valid, const char *xattr_name,
442 const char *input, int input_size, int output_size,
443 int flags, __u32 suppgid, struct ptlrpc_request **request)
444{
445 return mdc_xattr_common(exp, &RQF_MDS_REINT_SETXATTR,
446 fid, oc, MDS_REINT, valid, xattr_name,
447 input, input_size, output_size, flags,
448 suppgid, request);
449}
450
451int mdc_getxattr(struct obd_export *exp, const struct lu_fid *fid,
452 struct obd_capa *oc, obd_valid valid, const char *xattr_name,
453 const char *input, int input_size, int output_size,
454 int flags, struct ptlrpc_request **request)
455{
456 return mdc_xattr_common(exp, &RQF_MDS_GETXATTR,
457 fid, oc, MDS_GETXATTR, valid, xattr_name,
458 input, input_size, output_size, flags,
459 -1, request);
460}
461
462#ifdef CONFIG_FS_POSIX_ACL
463static int mdc_unpack_acl(struct ptlrpc_request *req, struct lustre_md *md)
464{
465 struct req_capsule *pill = &req->rq_pill;
466 struct mdt_body *body = md->body;
467 struct posix_acl *acl;
468 void *buf;
469 int rc;
d7e09d03
PT		 470
471 if (!body->aclsize)
0a3bdb00 472 return 0;
d7e09d03
PT		 473
474 buf = req_capsule_server_sized_get(pill, &RMF_ACL, body->aclsize);
475
476 if (!buf)
0a3bdb00 477 return -EPROTO;
d7e09d03
PT		 478
479 acl = posix_acl_from_xattr(&init_user_ns, buf, body->aclsize);
480 if (IS_ERR(acl)) {
481 rc = PTR_ERR(acl);
482 CERROR("convert xattr to acl: %d\n", rc);
0a3bdb00 483 return rc;
d7e09d03
PT		 484 }
485
486 rc = posix_acl_valid(acl);
487 if (rc) {
488 CERROR("validate acl: %d\n", rc);
489 posix_acl_release(acl);
0a3bdb00 490 return rc;
d7e09d03
PT		 491 }
492
493 md->posix_acl = acl;
0a3bdb00 494 return 0;
d7e09d03
PT		 495}
496#else
497#define mdc_unpack_acl(req, md) 0
498#endif
499
500int mdc_get_lustre_md(struct obd_export *exp, struct ptlrpc_request *req,
501 struct obd_export *dt_exp, struct obd_export *md_exp,
502 struct lustre_md *md)
503{
504 struct req_capsule *pill = &req->rq_pill;
505 int rc;
d7e09d03
PT		 506
507 LASSERT(md);
508 memset(md, 0, sizeof(*md));
509
510 md->body = req_capsule_server_get(pill, &RMF_MDT_BODY);
511 LASSERT(md->body != NULL);
512
513 if (md->body->valid & OBD_MD_FLEASIZE) {
514 int lmmsize;
515 struct lov_mds_md *lmm;
516
517 if (!S_ISREG(md->body->mode)) {
518 CDEBUG(D_INFO, "OBD_MD_FLEASIZE set, should be a "
519 "regular file, but is not\n");
520 GOTO(out, rc = -EPROTO);
521 }
522
523 if (md->body->eadatasize == 0) {
524 CDEBUG(D_INFO, "OBD_MD_FLEASIZE set, "
525 "but eadatasize 0\n");
526 GOTO(out, rc = -EPROTO);
527 }
528 lmmsize = md->body->eadatasize;
529 lmm = req_capsule_server_sized_get(pill, &RMF_MDT_MD, lmmsize);
530 if (!lmm)
531 GOTO(out, rc = -EPROTO);
532
533 rc = obd_unpackmd(dt_exp, &md->lsm, lmm, lmmsize);
534 if (rc < 0)
535 GOTO(out, rc);
536
537 if (rc < sizeof(*md->lsm)) {
538 CDEBUG(D_INFO, "lsm size too small: "
539 "rc < sizeof (*md->lsm) (%d < %d)\n",
540 rc, (int)sizeof(*md->lsm));
541 GOTO(out, rc = -EPROTO);
542 }
543
544 } else if (md->body->valid & OBD_MD_FLDIREA) {
545 int lmvsize;
546 struct lov_mds_md *lmv;
547
301af906 548 if (!S_ISDIR(md->body->mode)) {
d7e09d03
PT		 549 CDEBUG(D_INFO, "OBD_MD_FLDIREA set, should be a "
550 "directory, but is not\n");
551 GOTO(out, rc = -EPROTO);
552 }
553
554 if (md->body->eadatasize == 0) {
555 CDEBUG(D_INFO, "OBD_MD_FLDIREA is set, "
556 "but eadatasize 0\n");
0a3bdb00 557 return -EPROTO;
d7e09d03
PT		 558 }
559 if (md->body->valid & OBD_MD_MEA) {
560 lmvsize = md->body->eadatasize;
561 lmv = req_capsule_server_sized_get(pill, &RMF_MDT_MD,
562 lmvsize);
563 if (!lmv)
564 GOTO(out, rc = -EPROTO);
565
566 rc = obd_unpackmd(md_exp, (void *)&md->mea, lmv,
567 lmvsize);
568 if (rc < 0)
569 GOTO(out, rc);
570
571 if (rc < sizeof(*md->mea)) {
572 CDEBUG(D_INFO, "size too small: "
573 "rc < sizeof(*md->mea) (%d < %d)\n",
574 rc, (int)sizeof(*md->mea));
575 GOTO(out, rc = -EPROTO);
576 }
577 }
578 }
579 rc = 0;
580
581 if (md->body->valid & OBD_MD_FLRMTPERM) {
582 /* remote permission */
583 LASSERT(client_is_remote(exp));
584 md->remote_perm = req_capsule_server_swab_get(pill, &RMF_ACL,
585 lustre_swab_mdt_remote_perm);
586 if (!md->remote_perm)
587 GOTO(out, rc = -EPROTO);
588 }
589 else if (md->body->valid & OBD_MD_FLACL) {
590 /* for ACL, it's possible that FLACL is set but aclsize is zero.
591 * only when aclsize != 0 there's an actual segment for ACL
592 * in reply buffer.
593 */
594 if (md->body->aclsize) {
595 rc = mdc_unpack_acl(req, md);
596 if (rc)
597 GOTO(out, rc);
598#ifdef CONFIG_FS_POSIX_ACL
599 } else {
600 md->posix_acl = NULL;
601#endif
602 }
603 }
604 if (md->body->valid & OBD_MD_FLMDSCAPA) {
605 struct obd_capa *oc = NULL;
606
607 rc = mdc_unpack_capa(NULL, req, &RMF_CAPA1, &oc);
608 if (rc)
609 GOTO(out, rc);
610 md->mds_capa = oc;
611 }
612
613 if (md->body->valid & OBD_MD_FLOSSCAPA) {
614 struct obd_capa *oc = NULL;
615
616 rc = mdc_unpack_capa(NULL, req, &RMF_CAPA2, &oc);
617 if (rc)
618 GOTO(out, rc);
619 md->oss_capa = oc;
620 }
621
d7e09d03
PT		 622out:
623 if (rc) {
624 if (md->oss_capa) {
625 capa_put(md->oss_capa);
626 md->oss_capa = NULL;
627 }
628 if (md->mds_capa) {
629 capa_put(md->mds_capa);
630 md->mds_capa = NULL;
631 }
632#ifdef CONFIG_FS_POSIX_ACL
633 posix_acl_release(md->posix_acl);
634#endif
635 if (md->lsm)
636 obd_free_memmd(dt_exp, &md->lsm);
637 }
638 return rc;
639}
640
641int mdc_free_lustre_md(struct obd_export *exp, struct lustre_md *md)
642{
0a3bdb00 643 return 0;
d7e09d03
PT		 644}
645
646/**
647 * Handles both OPEN and SETATTR RPCs for OPEN-CLOSE and SETATTR-DONE_WRITING
648 * RPC chains.
649 */
650void mdc_replay_open(struct ptlrpc_request *req)
651{
652 struct md_open_data *mod = req->rq_cb_data;
653 struct ptlrpc_request *close_req;
654 struct obd_client_handle *och;
655 struct lustre_handle old;
656 struct mdt_body *body;
d7e09d03
PT		 657
658 if (mod == NULL) {
659 DEBUG_REQ(D_ERROR, req,
660 "Can't properly replay without open data.");
d7e09d03
PT		 661 return;
662 }
663
664 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
665 LASSERT(body != NULL);
666
667 och = mod->mod_och;
668 if (och != NULL) {
669 struct lustre_handle *file_fh;
670
671 LASSERT(och->och_magic == OBD_CLIENT_HANDLE_MAGIC);
672
673 file_fh = &och->och_fh;
55f5a824 674 CDEBUG(D_HA, "updating handle from %#llx to %#llx\n",
d7e09d03
PT		 675 file_fh->cookie, body->handle.cookie);
676 old = *file_fh;
677 *file_fh = body->handle;
678 }
679 close_req = mod->mod_close_req;
680 if (close_req != NULL) {
681 __u32 opc = lustre_msg_get_opc(close_req->rq_reqmsg);
682 struct mdt_ioepoch *epoch;
683
684 LASSERT(opc == MDS_CLOSE || opc == MDS_DONE_WRITING);
685 epoch = req_capsule_client_get(&close_req->rq_pill,
686 &RMF_MDT_EPOCH);
687 LASSERT(epoch);
688
689 if (och != NULL)
690 LASSERT(!memcmp(&old, &epoch->handle, sizeof(old)));
691 DEBUG_REQ(D_HA, close_req, "updating close body with new fh");
692 epoch->handle = body->handle;
693 }
d7e09d03
PT		 694}
695
696void mdc_commit_open(struct ptlrpc_request *req)
697{
698 struct md_open_data *mod = req->rq_cb_data;
699 if (mod == NULL)
700 return;
701
702 /**
703 * No need to touch md_open_data::mod_och, it holds a reference on
704 * \var mod and will zero references to each other, \var mod will be
705 * freed after that when md_open_data::mod_och will put the reference.
706 */
707
708 /**
709 * Do not let open request to disappear as it still may be needed
710 * for close rpc to happen (it may happen on evict only, otherwise
711 * ptlrpc_request::rq_replay does not let mdc_commit_open() to be
712 * called), just mark this rpc as committed to distinguish these 2
713 * cases, see mdc_close() for details. The open request reference will
714 * be put along with freeing \var mod.
715 */
716 ptlrpc_request_addref(req);
717 spin_lock(&req->rq_lock);
718 req->rq_committed = 1;
719 spin_unlock(&req->rq_lock);
720 req->rq_cb_data = NULL;
721 obd_mod_put(mod);
722}
723
724int mdc_set_open_replay_data(struct obd_export *exp,
725 struct obd_client_handle *och,
63d42578 726 struct lookup_intent *it)
d7e09d03
PT		 727{
728 struct md_open_data *mod;
729 struct mdt_rec_create *rec;
730 struct mdt_body *body;
63d42578 731 struct ptlrpc_request *open_req = it->d.lustre.it_data;
d7e09d03 732 struct obd_import *imp = open_req->rq_import;
d7e09d03
PT		 733
734 if (!open_req->rq_replay)
0a3bdb00 735 return 0;
d7e09d03
PT		 736
737 rec = req_capsule_client_get(&open_req->rq_pill, &RMF_REC_REINT);
738 body = req_capsule_server_get(&open_req->rq_pill, &RMF_MDT_BODY);
739 LASSERT(rec != NULL);
740 /* Incoming message in my byte order (it's been swabbed). */
741 /* Outgoing messages always in my byte order. */
742 LASSERT(body != NULL);
743
744 /* Only if the import is replayable, we set replay_open data */
745 if (och && imp->imp_replayable) {
746 mod = obd_mod_alloc();
747 if (mod == NULL) {
748 DEBUG_REQ(D_ERROR, open_req,
749 "Can't allocate md_open_data");
0a3bdb00 750 return 0;
d7e09d03
PT		 751 }
752
753 /**
754 * Take a reference on \var mod, to be freed on mdc_close().
755 * It protects \var mod from being freed on eviction (commit
756 * callback is called despite rq_replay flag).
757 * Another reference for \var och.
758 */
759 obd_mod_get(mod);
760 obd_mod_get(mod);
761
762 spin_lock(&open_req->rq_lock);
763 och->och_mod = mod;
764 mod->mod_och = och;
63d42578
HZ		 765 mod->mod_is_create = it_disposition(it, DISP_OPEN_CREATE) ||
766 it_disposition(it, DISP_OPEN_STRIPE);
d7e09d03
PT		 767 mod->mod_open_req = open_req;
768 open_req->rq_cb_data = mod;
769 open_req->rq_commit_cb = mdc_commit_open;
770 spin_unlock(&open_req->rq_lock);
771 }
772
773 rec->cr_fid2 = body->fid1;
774 rec->cr_ioepoch = body->ioepoch;
775 rec->cr_old_handle.cookie = body->handle.cookie;
776 open_req->rq_replay_cb = mdc_replay_open;
777 if (!fid_is_sane(&body->fid1)) {
778 DEBUG_REQ(D_ERROR, open_req, "Saving replay request with "
779 "insane fid");
780 LBUG();
781 }
782
783 DEBUG_REQ(D_RPCTRACE, open_req, "Set up open replay data");
0a3bdb00 784 return 0;
d7e09d03
PT		 785}
786
63d42578
HZ		 787static void mdc_free_open(struct md_open_data *mod)
788{
789 int committed = 0;
790
791 if (mod->mod_is_create == 0 &&
792 imp_connect_disp_stripe(mod->mod_open_req->rq_import))
793 committed = 1;
794
795 LASSERT(mod->mod_open_req->rq_replay == 0);
796
797 DEBUG_REQ(D_RPCTRACE, mod->mod_open_req, "free open request\n");
798
799 ptlrpc_request_committed(mod->mod_open_req, committed);
800 if (mod->mod_close_req)
801 ptlrpc_request_committed(mod->mod_close_req, committed);
802}
803
d7e09d03
PT		 804int mdc_clear_open_replay_data(struct obd_export *exp,
805 struct obd_client_handle *och)
806{
807 struct md_open_data *mod = och->och_mod;
d7e09d03
PT		 808
809 /**
810 * It is possible to not have \var mod in a case of eviction between
811 * lookup and ll_file_open().
812 **/
813 if (mod == NULL)
0a3bdb00 814 return 0;
d7e09d03
PT		 815
816 LASSERT(mod != LP_POISON);
63d42578
HZ		 817 LASSERT(mod->mod_open_req != NULL);
818 mdc_free_open(mod);
d7e09d03
PT		 819
820 mod->mod_och = NULL;
821 och->och_mod = NULL;
822 obd_mod_put(mod);
823
0a3bdb00 824 return 0;
d7e09d03
PT		 825}
826
827/* Prepares the request for the replay by the given reply */
828static void mdc_close_handle_reply(struct ptlrpc_request *req,
829 struct md_op_data *op_data, int rc) {
830 struct mdt_body *repbody;
831 struct mdt_ioepoch *epoch;
832
833 if (req && rc == -EAGAIN) {
834 repbody = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
835 epoch = req_capsule_client_get(&req->rq_pill, &RMF_MDT_EPOCH);
836
837 epoch->flags |= MF_SOM_AU;
838 if (repbody->valid & OBD_MD_FLGETATTRLOCK)
839 op_data->op_flags |= MF_GETATTR_LOCK;
840 }
841}
842
843int mdc_close(struct obd_export *exp, struct md_op_data *op_data,
844 struct md_open_data *mod, struct ptlrpc_request **request)
845{
846 struct obd_device *obd = class_exp2obd(exp);
847 struct ptlrpc_request *req;
48d23e61
JX		 848 struct req_format *req_fmt;
849 int rc;
850 int saved_rc = 0;
851
852
853 req_fmt = &RQF_MDS_CLOSE;
854 if (op_data->op_bias & MDS_HSM_RELEASE) {
855 req_fmt = &RQF_MDS_RELEASE_CLOSE;
856
857 /* allocate a FID for volatile file */
858 rc = mdc_fid_alloc(exp, &op_data->op_fid2, op_data);
859 if (rc < 0) {
860 CERROR("%s: "DFID" failed to allocate FID: %d\n",
861 obd->obd_name, PFID(&op_data->op_fid1), rc);
862 /* save the errcode and proceed to close */
863 saved_rc = rc;
864 }
865 }
d7e09d03
PT		 866
867 *request = NULL;
48d23e61 868 req = ptlrpc_request_alloc(class_exp2cliimp(exp), req_fmt);
d7e09d03 869 if (req == NULL)
0a3bdb00 870 return -ENOMEM;
d7e09d03
PT		 871
872 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
873
874 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_CLOSE);
875 if (rc) {
876 ptlrpc_request_free(req);
0a3bdb00 877 return rc;
d7e09d03
PT		 878 }
879
880 /* To avoid a livelock (bug 7034), we need to send CLOSE RPCs to a
881 * portal whose threads are not taking any DLM locks and are therefore
882 * always progressing */
883 req->rq_request_portal = MDS_READPAGE_PORTAL;
884 ptlrpc_at_set_req_timeout(req);
885
886 /* Ensure that this close's handle is fixed up during replay. */
887 if (likely(mod != NULL)) {
888 LASSERTF(mod->mod_open_req != NULL &&
889 mod->mod_open_req->rq_type != LI_POISON,
890 "POISONED open %p!\n", mod->mod_open_req);
891
892 mod->mod_close_req = req;
893
894 DEBUG_REQ(D_HA, mod->mod_open_req, "matched open");
895 /* We no longer want to preserve this open for replay even
896 * though the open was committed. b=3632, b=3633 */
897 spin_lock(&mod->mod_open_req->rq_lock);
898 mod->mod_open_req->rq_replay = 0;
899 spin_unlock(&mod->mod_open_req->rq_lock);
900 } else {
e5e663ae
SM		 901 CDEBUG(D_HA,
902 "couldn't find open req; expecting close error\n");
d7e09d03
PT		 903 }
904
905 mdc_close_pack(req, op_data);
906
907 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
44779340 908 obd->u.cli.cl_default_mds_easize);
d7e09d03 909 req_capsule_set_size(&req->rq_pill, &RMF_LOGCOOKIES, RCL_SERVER,
44779340 910 obd->u.cli.cl_default_mds_cookiesize);
d7e09d03
PT		 911
912 ptlrpc_request_set_replen(req);
913
914 mdc_get_rpc_lock(obd->u.cli.cl_close_lock, NULL);
915 rc = ptlrpc_queue_wait(req);
916 mdc_put_rpc_lock(obd->u.cli.cl_close_lock, NULL);
917
918 if (req->rq_repmsg == NULL) {
919 CDEBUG(D_RPCTRACE, "request failed to send: %p, %d\n", req,
920 req->rq_status);
921 if (rc == 0)
922 rc = req->rq_status ?: -EIO;
923 } else if (rc == 0 || rc == -EAGAIN) {
924 struct mdt_body *body;
925
926 rc = lustre_msg_get_status(req->rq_repmsg);
927 if (lustre_msg_get_type(req->rq_repmsg) == PTL_RPC_MSG_ERR) {
928 DEBUG_REQ(D_ERROR, req, "type == PTL_RPC_MSG_ERR, err "
929 "= %d", rc);
930 if (rc > 0)
931 rc = -rc;
932 }
933 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
934 if (body == NULL)
935 rc = -EPROTO;
936 } else if (rc == -ESTALE) {
937 /**
938 * it can be allowed error after 3633 if open was committed and
939 * server failed before close was sent. Let's check if mod
940 * exists and return no error in that case
941 */
942 if (mod) {
943 DEBUG_REQ(D_HA, req, "Reset ESTALE = %d", rc);
944 LASSERT(mod->mod_open_req != NULL);
945 if (mod->mod_open_req->rq_committed)
946 rc = 0;
947 }
948 }
949
950 if (mod) {
951 if (rc != 0)
952 mod->mod_close_req = NULL;
953 /* Since now, mod is accessed through open_req only,
954 * thus close req does not keep a reference on mod anymore. */
955 obd_mod_put(mod);
956 }
957 *request = req;
958 mdc_close_handle_reply(req, op_data, rc);
48d23e61 959 return rc < 0 ? rc : saved_rc;
d7e09d03
PT		 960}
961
962int mdc_done_writing(struct obd_export *exp, struct md_op_data *op_data,
963 struct md_open_data *mod)
964{
965 struct obd_device *obd = class_exp2obd(exp);
966 struct ptlrpc_request *req;
967 int rc;
d7e09d03
PT		 968
969 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
970 &RQF_MDS_DONE_WRITING);
971 if (req == NULL)
0a3bdb00 972 return -ENOMEM;
d7e09d03
PT		 973
974 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
975 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_DONE_WRITING);
976 if (rc) {
977 ptlrpc_request_free(req);
0a3bdb00 978 return rc;
d7e09d03
PT		 979 }
980
981 if (mod != NULL) {
982 LASSERTF(mod->mod_open_req != NULL &&
983 mod->mod_open_req->rq_type != LI_POISON,
984 "POISONED setattr %p!\n", mod->mod_open_req);
985
986 mod->mod_close_req = req;
987 DEBUG_REQ(D_HA, mod->mod_open_req, "matched setattr");
988 /* We no longer want to preserve this setattr for replay even
989 * though the open was committed. b=3632, b=3633 */
990 spin_lock(&mod->mod_open_req->rq_lock);
991 mod->mod_open_req->rq_replay = 0;
992 spin_unlock(&mod->mod_open_req->rq_lock);
993 }
994
995 mdc_close_pack(req, op_data);
996 ptlrpc_request_set_replen(req);
997
998 mdc_get_rpc_lock(obd->u.cli.cl_close_lock, NULL);
999 rc = ptlrpc_queue_wait(req);
1000 mdc_put_rpc_lock(obd->u.cli.cl_close_lock, NULL);
1001
1002 if (rc == -ESTALE) {
1003 /**
1004 * it can be allowed error after 3633 if open or setattr were
1005 * committed and server failed before close was sent.
1006 * Let's check if mod exists and return no error in that case
1007 */
1008 if (mod) {
1009 LASSERT(mod->mod_open_req != NULL);
1010 if (mod->mod_open_req->rq_committed)
1011 rc = 0;
1012 }
1013 }
1014
1015 if (mod) {
1016 if (rc != 0)
1017 mod->mod_close_req = NULL;
63d42578
HZ		 1018 LASSERT(mod->mod_open_req != NULL);
1019 mdc_free_open(mod);
1020
d7e09d03
PT		 1021 /* Since now, mod is accessed through setattr req only,
1022 * thus DW req does not keep a reference on mod anymore. */
1023 obd_mod_put(mod);
1024 }
1025
1026 mdc_close_handle_reply(req, op_data, rc);
1027 ptlrpc_req_finished(req);
0a3bdb00 1028 return rc;
d7e09d03
PT		 1029}
1030
1031
1032int mdc_readpage(struct obd_export *exp, struct md_op_data *op_data,
1033 struct page **pages, struct ptlrpc_request **request)
1034{
1035 struct ptlrpc_request *req;
1036 struct ptlrpc_bulk_desc *desc;
1037 int i;
1038 wait_queue_head_t waitq;
1039 int resends = 0;
1040 struct l_wait_info lwi;
1041 int rc;
d7e09d03
PT		 1042
1043 *request = NULL;
1044 init_waitqueue_head(&waitq);
1045
1046restart_bulk:
1047 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_READPAGE);
1048 if (req == NULL)
0a3bdb00 1049 return -ENOMEM;
d7e09d03
PT		 1050
1051 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
1052
1053 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_READPAGE);
1054 if (rc) {
1055 ptlrpc_request_free(req);
0a3bdb00 1056 return rc;
d7e09d03
PT		 1057 }
1058
1059 req->rq_request_portal = MDS_READPAGE_PORTAL;
1060 ptlrpc_at_set_req_timeout(req);
1061
1062 desc = ptlrpc_prep_bulk_imp(req, op_data->op_npages, 1, BULK_PUT_SINK,
1063 MDS_BULK_PORTAL);
1064 if (desc == NULL) {
1065 ptlrpc_request_free(req);
0a3bdb00 1066 return -ENOMEM;
d7e09d03
PT		 1067 }
1068
1069 /* NB req now owns desc and will free it when it gets freed */
1070 for (i = 0; i < op_data->op_npages; i++)
1071 ptlrpc_prep_bulk_page_pin(desc, pages[i], 0, PAGE_CACHE_SIZE);
1072
1073 mdc_readdir_pack(req, op_data->op_offset,
1074 PAGE_CACHE_SIZE * op_data->op_npages,
1075 &op_data->op_fid1, op_data->op_capa1);
1076
1077 ptlrpc_request_set_replen(req);
1078 rc = ptlrpc_queue_wait(req);
1079 if (rc) {
1080 ptlrpc_req_finished(req);
1081 if (rc != -ETIMEDOUT)
0a3bdb00 1082 return rc;
d7e09d03
PT		 1083
1084 resends++;
1085 if (!client_should_resend(resends, &exp->exp_obd->u.cli)) {
1086 CERROR("too many resend retries, returning error\n");
0a3bdb00 1087 return -EIO;
d7e09d03 1088 }
e5e663ae
SM		 1089 lwi = LWI_TIMEOUT_INTR(cfs_time_seconds(resends),
1090 NULL, NULL, NULL);
d7e09d03
PT		 1091 l_wait_event(waitq, 0, &lwi);
1092
1093 goto restart_bulk;
1094 }
1095
1096 rc = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk,
1097 req->rq_bulk->bd_nob_transferred);
1098 if (rc < 0) {
1099 ptlrpc_req_finished(req);
0a3bdb00 1100 return rc;
d7e09d03
PT		 1101 }
1102
1103 if (req->rq_bulk->bd_nob_transferred & ~LU_PAGE_MASK) {
1104 CERROR("Unexpected # bytes transferred: %d (%ld expected)\n",
1105 req->rq_bulk->bd_nob_transferred,
1106 PAGE_CACHE_SIZE * op_data->op_npages);
1107 ptlrpc_req_finished(req);
0a3bdb00 1108 return -EPROTO;
d7e09d03
PT		 1109 }
1110
1111 *request = req;
0a3bdb00 1112 return 0;
d7e09d03
PT		 1113}
1114
1115static int mdc_statfs(const struct lu_env *env,
1116 struct obd_export *exp, struct obd_statfs *osfs,
1117 __u64 max_age, __u32 flags)
1118{
1119 struct obd_device *obd = class_exp2obd(exp);
1120 struct ptlrpc_request *req;
1121 struct obd_statfs *msfs;
1122 struct obd_import *imp = NULL;
1123 int rc;
d7e09d03
PT		 1124
1125 /*
1126 * Since the request might also come from lprocfs, so we need
1127 * sync this with client_disconnect_export Bug15684
1128 */
1129 down_read(&obd->u.cli.cl_sem);
1130 if (obd->u.cli.cl_import)
1131 imp = class_import_get(obd->u.cli.cl_import);
1132 up_read(&obd->u.cli.cl_sem);
1133 if (!imp)
0a3bdb00 1134 return -ENODEV;
d7e09d03
PT		 1135
1136 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_STATFS,
1137 LUSTRE_MDS_VERSION, MDS_STATFS);
1138 if (req == NULL)
1139 GOTO(output, rc = -ENOMEM);
1140
1141 ptlrpc_request_set_replen(req);
1142
1143 if (flags & OBD_STATFS_NODELAY) {
1144 /* procfs requests not want stay in wait for avoid deadlock */
1145 req->rq_no_resend = 1;
1146 req->rq_no_delay = 1;
1147 }
1148
1149 rc = ptlrpc_queue_wait(req);
1150 if (rc) {
1151 /* check connection error first */
1152 if (imp->imp_connect_error)
1153 rc = imp->imp_connect_error;
1154 GOTO(out, rc);
1155 }
1156
1157 msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
1158 if (msfs == NULL)
1159 GOTO(out, rc = -EPROTO);
1160
1161 *osfs = *msfs;
d7e09d03
PT		 1162out:
1163 ptlrpc_req_finished(req);
1164output:
1165 class_import_put(imp);
1166 return rc;
1167}
1168
1169static int mdc_ioc_fid2path(struct obd_export *exp, struct getinfo_fid2path *gf)
1170{
1171 __u32 keylen, vallen;
1172 void *key;
1173 int rc;
1174
1175 if (gf->gf_pathlen > PATH_MAX)
0a3bdb00 1176 return -ENAMETOOLONG;
d7e09d03 1177 if (gf->gf_pathlen < 2)
0a3bdb00 1178 return -EOVERFLOW;
d7e09d03
PT		 1179
1180 /* Key is KEY_FID2PATH + getinfo_fid2path description */
1181 keylen = cfs_size_round(sizeof(KEY_FID2PATH)) + sizeof(*gf);
1182 OBD_ALLOC(key, keylen);
1183 if (key == NULL)
0a3bdb00 1184 return -ENOMEM;
d7e09d03
PT		 1185 memcpy(key, KEY_FID2PATH, sizeof(KEY_FID2PATH));
1186 memcpy(key + cfs_size_round(sizeof(KEY_FID2PATH)), gf, sizeof(*gf));
1187
b0f5aad5 1188 CDEBUG(D_IOCTL, "path get "DFID" from %llu #%d\n",
d7e09d03
PT		 1189 PFID(&gf->gf_fid), gf->gf_recno, gf->gf_linkno);
1190
1191 if (!fid_is_sane(&gf->gf_fid))
1192 GOTO(out, rc = -EINVAL);
1193
1194 /* Val is struct getinfo_fid2path result plus path */
1195 vallen = sizeof(*gf) + gf->gf_pathlen;
1196
1197 rc = obd_get_info(NULL, exp, keylen, key, &vallen, gf, NULL);
1198 if (rc != 0 && rc != -EREMOTE)
1199 GOTO(out, rc);
1200
1201 if (vallen <= sizeof(*gf))
1202 GOTO(out, rc = -EPROTO);
1203 else if (vallen > sizeof(*gf) + gf->gf_pathlen)
1204 GOTO(out, rc = -EOVERFLOW);
1205
b0f5aad5 1206 CDEBUG(D_IOCTL, "path get "DFID" from %llu #%d\n%s\n",
d7e09d03
PT		 1207 PFID(&gf->gf_fid), gf->gf_recno, gf->gf_linkno, gf->gf_path);
1208
1209out:
1210 OBD_FREE(key, keylen);
1211 return rc;
1212}
1213
1214static int mdc_ioc_hsm_progress(struct obd_export *exp,
1215 struct hsm_progress_kernel *hpk)
1216{
1217 struct obd_import *imp = class_exp2cliimp(exp);
1218 struct hsm_progress_kernel *req_hpk;
1219 struct ptlrpc_request *req;
1220 int rc;
d7e09d03
PT		 1221
1222 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_PROGRESS,
1223 LUSTRE_MDS_VERSION, MDS_HSM_PROGRESS);
1224 if (req == NULL)
1225 GOTO(out, rc = -ENOMEM);
1226
1227 mdc_pack_body(req, NULL, NULL, OBD_MD_FLRMTPERM, 0, 0, 0);
1228
1229 /* Copy hsm_progress struct */
1230 req_hpk = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_PROGRESS);
1231 if (req_hpk == NULL)
1232 GOTO(out, rc = -EPROTO);
1233
1234 *req_hpk = *hpk;
2d58de78 1235 req_hpk->hpk_errval = lustre_errno_hton(hpk->hpk_errval);
d7e09d03
PT		 1236
1237 ptlrpc_request_set_replen(req);
1238
1239 rc = mdc_queue_wait(req);
1240 GOTO(out, rc);
1241out:
1242 ptlrpc_req_finished(req);
1243 return rc;
1244}
1245
1246static int mdc_ioc_hsm_ct_register(struct obd_import *imp, __u32 archives)
1247{
1248 __u32 *archive_mask;
1249 struct ptlrpc_request *req;
1250 int rc;
d7e09d03
PT		 1251
1252 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_CT_REGISTER,
1253 LUSTRE_MDS_VERSION,
1254 MDS_HSM_CT_REGISTER);
1255 if (req == NULL)
1256 GOTO(out, rc = -ENOMEM);
1257
1258 mdc_pack_body(req, NULL, NULL, OBD_MD_FLRMTPERM, 0, 0, 0);
1259
1260 /* Copy hsm_progress struct */
1261 archive_mask = req_capsule_client_get(&req->rq_pill,
1262 &RMF_MDS_HSM_ARCHIVE);
1263 if (archive_mask == NULL)
1264 GOTO(out, rc = -EPROTO);
1265
1266 *archive_mask = archives;
1267
1268 ptlrpc_request_set_replen(req);
1269
1270 rc = mdc_queue_wait(req);
1271 GOTO(out, rc);
1272out:
1273 ptlrpc_req_finished(req);
1274 return rc;
1275}
1276
1277static int mdc_ioc_hsm_current_action(struct obd_export *exp,
1278 struct md_op_data *op_data)
1279{
1280 struct hsm_current_action *hca = op_data->op_data;
1281 struct hsm_current_action *req_hca;
1282 struct ptlrpc_request *req;
1283 int rc;
d7e09d03
PT		 1284
1285 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1286 &RQF_MDS_HSM_ACTION);
1287 if (req == NULL)
0a3bdb00 1288 return -ENOMEM;
d7e09d03
PT		 1289
1290 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
1291
1292 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_ACTION);
1293 if (rc) {
1294 ptlrpc_request_free(req);
0a3bdb00 1295 return rc;
d7e09d03
PT		 1296 }
1297
1298 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1,
1299 OBD_MD_FLRMTPERM, 0, op_data->op_suppgids[0], 0);
1300
1301 ptlrpc_request_set_replen(req);
1302
1303 rc = mdc_queue_wait(req);
1304 if (rc)
1305 GOTO(out, rc);
1306
1307 req_hca = req_capsule_server_get(&req->rq_pill,
1308 &RMF_MDS_HSM_CURRENT_ACTION);
1309 if (req_hca == NULL)
1310 GOTO(out, rc = -EPROTO);
1311
1312 *hca = *req_hca;
1313
d7e09d03
PT		 1314out:
1315 ptlrpc_req_finished(req);
1316 return rc;
1317}
1318
1319static int mdc_ioc_hsm_ct_unregister(struct obd_import *imp)
1320{
1321 struct ptlrpc_request *req;
1322 int rc;
d7e09d03
PT		 1323
1324 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_CT_UNREGISTER,
1325 LUSTRE_MDS_VERSION,
1326 MDS_HSM_CT_UNREGISTER);
1327 if (req == NULL)
1328 GOTO(out, rc = -ENOMEM);
1329
1330 mdc_pack_body(req, NULL, NULL, OBD_MD_FLRMTPERM, 0, 0, 0);
1331
1332 ptlrpc_request_set_replen(req);
1333
1334 rc = mdc_queue_wait(req);
1335 GOTO(out, rc);
1336out:
1337 ptlrpc_req_finished(req);
1338 return rc;
1339}
1340
1341static int mdc_ioc_hsm_state_get(struct obd_export *exp,
1342 struct md_op_data *op_data)
1343{
1344 struct hsm_user_state *hus = op_data->op_data;
1345 struct hsm_user_state *req_hus;
1346 struct ptlrpc_request *req;
1347 int rc;
d7e09d03
PT		 1348
1349 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1350 &RQF_MDS_HSM_STATE_GET);
1351 if (req == NULL)
0a3bdb00 1352 return -ENOMEM;
d7e09d03
PT		 1353
1354 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
1355
1356 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_STATE_GET);
1357 if (rc != 0) {
1358 ptlrpc_request_free(req);
0a3bdb00 1359 return rc;
d7e09d03
PT		 1360 }
1361
1362 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1,
1363 OBD_MD_FLRMTPERM, 0, op_data->op_suppgids[0], 0);
1364
1365 ptlrpc_request_set_replen(req);
1366
1367 rc = mdc_queue_wait(req);
1368 if (rc)
1369 GOTO(out, rc);
1370
1371 req_hus = req_capsule_server_get(&req->rq_pill, &RMF_HSM_USER_STATE);
1372 if (req_hus == NULL)
1373 GOTO(out, rc = -EPROTO);
1374
1375 *hus = *req_hus;
1376
d7e09d03
PT		 1377out:
1378 ptlrpc_req_finished(req);
1379 return rc;
1380}
1381
1382static int mdc_ioc_hsm_state_set(struct obd_export *exp,
1383 struct md_op_data *op_data)
1384{
1385 struct hsm_state_set *hss = op_data->op_data;
1386 struct hsm_state_set *req_hss;
1387 struct ptlrpc_request *req;
1388 int rc;
d7e09d03
PT		 1389
1390 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1391 &RQF_MDS_HSM_STATE_SET);
1392 if (req == NULL)
0a3bdb00 1393 return -ENOMEM;
d7e09d03
PT		 1394
1395 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
1396
1397 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_STATE_SET);
1398 if (rc) {
1399 ptlrpc_request_free(req);
0a3bdb00 1400 return rc;
d7e09d03
PT		 1401 }
1402
1403 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1,
1404 OBD_MD_FLRMTPERM, 0, op_data->op_suppgids[0], 0);
1405
1406 /* Copy states */
1407 req_hss = req_capsule_client_get(&req->rq_pill, &RMF_HSM_STATE_SET);
1408 if (req_hss == NULL)
1409 GOTO(out, rc = -EPROTO);
1410 *req_hss = *hss;
1411
1412 ptlrpc_request_set_replen(req);
1413
1414 rc = mdc_queue_wait(req);
1415 GOTO(out, rc);
1416
d7e09d03
PT		 1417out:
1418 ptlrpc_req_finished(req);
1419 return rc;
1420}
1421
1422static int mdc_ioc_hsm_request(struct obd_export *exp,
1423 struct hsm_user_request *hur)
1424{
1425 struct obd_import *imp = class_exp2cliimp(exp);
1426 struct ptlrpc_request *req;
1427 struct hsm_request *req_hr;
1428 struct hsm_user_item *req_hui;
1429 char *req_opaque;
1430 int rc;
d7e09d03
PT		 1431
1432 req = ptlrpc_request_alloc(imp, &RQF_MDS_HSM_REQUEST);
1433 if (req == NULL)
1434 GOTO(out, rc = -ENOMEM);
1435
1436 req_capsule_set_size(&req->rq_pill, &RMF_MDS_HSM_USER_ITEM, RCL_CLIENT,
1437 hur->hur_request.hr_itemcount
1438 * sizeof(struct hsm_user_item));
1439 req_capsule_set_size(&req->rq_pill, &RMF_GENERIC_DATA, RCL_CLIENT,
1440 hur->hur_request.hr_data_len);
1441
1442 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_REQUEST);
1443 if (rc) {
1444 ptlrpc_request_free(req);
0a3bdb00 1445 return rc;
d7e09d03
PT		 1446 }
1447
1448 mdc_pack_body(req, NULL, NULL, OBD_MD_FLRMTPERM, 0, 0, 0);
1449
1450 /* Copy hsm_request struct */
1451 req_hr = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_REQUEST);
1452 if (req_hr == NULL)
1453 GOTO(out, rc = -EPROTO);
1454 *req_hr = hur->hur_request;
1455
1456 /* Copy hsm_user_item structs */
1457 req_hui = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_USER_ITEM);
1458 if (req_hui == NULL)
1459 GOTO(out, rc = -EPROTO);
1460 memcpy(req_hui, hur->hur_user_item,
1461 hur->hur_request.hr_itemcount * sizeof(struct hsm_user_item));
1462
1463 /* Copy opaque field */
1464 req_opaque = req_capsule_client_get(&req->rq_pill, &RMF_GENERIC_DATA);
1465 if (req_opaque == NULL)
1466 GOTO(out, rc = -EPROTO);
1467 memcpy(req_opaque, hur_data(hur), hur->hur_request.hr_data_len);
1468
1469 ptlrpc_request_set_replen(req);
1470
1471 rc = mdc_queue_wait(req);
1472 GOTO(out, rc);
1473
1474out:
1475 ptlrpc_req_finished(req);
1476 return rc;
1477}
1478
1479static struct kuc_hdr *changelog_kuc_hdr(char *buf, int len, int flags)
1480{
1481 struct kuc_hdr *lh = (struct kuc_hdr *)buf;
1482
18e042f0 1483 LASSERT(len <= KUC_CHANGELOG_MSG_MAXSIZE);
d7e09d03
PT		 1484
1485 lh->kuc_magic = KUC_MAGIC;
1486 lh->kuc_transport = KUC_TRANSPORT_CHANGELOG;
1487 lh->kuc_flags = flags;
1488 lh->kuc_msgtype = CL_RECORD;
1489 lh->kuc_msglen = len;
1490 return lh;
1491}
1492
1493#define D_CHANGELOG 0
1494
1495struct changelog_show {
1496 __u64 cs_startrec;
1497 __u32 cs_flags;
1498 struct file *cs_fp;
1499 char *cs_buf;
1500 struct obd_device *cs_obd;
1501};
1502
e377988e 1503static int changelog_kkuc_cb(const struct lu_env *env, struct llog_handle *llh,
d7e09d03
PT		 1504 struct llog_rec_hdr *hdr, void *data)
1505{
1506 struct changelog_show *cs = data;
1507 struct llog_changelog_rec *rec = (struct llog_changelog_rec *)hdr;
1508 struct kuc_hdr *lh;
1509 int len, rc;
d7e09d03 1510
e377988e
AD		 1511 if (rec->cr_hdr.lrh_type != CHANGELOG_REC) {
1512 rc = -EINVAL;
1513 CERROR("%s: not a changelog rec %x/%d: rc = %d\n",
1514 cs->cs_obd->obd_name, rec->cr_hdr.lrh_type,
1515 rec->cr.cr_type, rc);
0a3bdb00 1516 return rc;
d7e09d03
PT		 1517 }
1518
1519 if (rec->cr.cr_index < cs->cs_startrec) {
1520 /* Skip entries earlier than what we are interested in */
b0f5aad5 1521 CDEBUG(D_CHANGELOG, "rec=%llu start=%llu\n",
d7e09d03 1522 rec->cr.cr_index, cs->cs_startrec);
0a3bdb00 1523 return 0;
d7e09d03
PT		 1524 }
1525
b0f5aad5 1526 CDEBUG(D_CHANGELOG, "%llu %02d%-5s %llu 0x%x t="DFID" p="DFID
d7e09d03
PT		 1527 " %.*s\n", rec->cr.cr_index, rec->cr.cr_type,
1528 changelog_type2str(rec->cr.cr_type), rec->cr.cr_time,
1529 rec->cr.cr_flags & CLF_FLAGMASK,
1530 PFID(&rec->cr.cr_tfid), PFID(&rec->cr.cr_pfid),
1531 rec->cr.cr_namelen, changelog_rec_name(&rec->cr));
1532
1533 len = sizeof(*lh) + changelog_rec_size(&rec->cr) + rec->cr.cr_namelen;
1534
1535 /* Set up the message */
1536 lh = changelog_kuc_hdr(cs->cs_buf, len, cs->cs_flags);
1537 memcpy(lh + 1, &rec->cr, len - sizeof(*lh));
1538
1539 rc = libcfs_kkuc_msg_put(cs->cs_fp, lh);
301af906 1540 CDEBUG(D_CHANGELOG, "kucmsg fp %p len %d rc %d\n", cs->cs_fp, len, rc);
d7e09d03 1541
0a3bdb00 1542 return rc;
d7e09d03
PT		 1543}
1544
1545static int mdc_changelog_send_thread(void *csdata)
1546{
1547 struct changelog_show *cs = csdata;
1548 struct llog_ctxt *ctxt = NULL;
1549 struct llog_handle *llh = NULL;
1550 struct kuc_hdr *kuch;
1551 int rc;
1552
b0f5aad5 1553 CDEBUG(D_CHANGELOG, "changelog to fp=%p start %llu\n",
d7e09d03
PT		 1554 cs->cs_fp, cs->cs_startrec);
1555
18e042f0 1556 OBD_ALLOC(cs->cs_buf, KUC_CHANGELOG_MSG_MAXSIZE);
d7e09d03
PT		 1557 if (cs->cs_buf == NULL)
1558 GOTO(out, rc = -ENOMEM);
1559
1560 /* Set up the remote catalog handle */
1561 ctxt = llog_get_context(cs->cs_obd, LLOG_CHANGELOG_REPL_CTXT);
1562 if (ctxt == NULL)
1563 GOTO(out, rc = -ENOENT);
1564 rc = llog_open(NULL, ctxt, &llh, NULL, CHANGELOG_CATALOG,
1565 LLOG_OPEN_EXISTS);
1566 if (rc) {
1567 CERROR("%s: fail to open changelog catalog: rc = %d\n",
1568 cs->cs_obd->obd_name, rc);
1569 GOTO(out, rc);
1570 }
1571 rc = llog_init_handle(NULL, llh, LLOG_F_IS_CAT, NULL);
1572 if (rc) {
1573 CERROR("llog_init_handle failed %d\n", rc);
1574 GOTO(out, rc);
1575 }
1576
e377988e 1577 rc = llog_cat_process(NULL, llh, changelog_kkuc_cb, cs, 0, 0);
d7e09d03
PT		 1578
1579 /* Send EOF no matter what our result */
4a87df3e
CP		 1580 kuch = changelog_kuc_hdr(cs->cs_buf, sizeof(*kuch), cs->cs_flags);
1581 if (kuch) {
d7e09d03
PT		 1582 kuch->kuc_msgtype = CL_EOF;
1583 libcfs_kkuc_msg_put(cs->cs_fp, kuch);
1584 }
1585
1586out:
1587 fput(cs->cs_fp);
1588 if (llh)
1589 llog_cat_close(NULL, llh);
1590 if (ctxt)
1591 llog_ctxt_put(ctxt);
1592 if (cs->cs_buf)
18e042f0 1593 OBD_FREE(cs->cs_buf, KUC_CHANGELOG_MSG_MAXSIZE);
d7e09d03
PT		 1594 OBD_FREE_PTR(cs);
1595 return rc;
1596}
1597
1598static int mdc_ioc_changelog_send(struct obd_device *obd,
1599 struct ioc_changelog *icc)
1600{
1601 struct changelog_show *cs;
1602 int rc;
1603
1604 /* Freed in mdc_changelog_send_thread */
1605 OBD_ALLOC_PTR(cs);
1606 if (!cs)
1607 return -ENOMEM;
1608
1609 cs->cs_obd = obd;
1610 cs->cs_startrec = icc->icc_recno;
1611 /* matching fput in mdc_changelog_send_thread */
1612 cs->cs_fp = fget(icc->icc_id);
1613 cs->cs_flags = icc->icc_flags;
1614
1615 /*
1616 * New thread because we should return to user app before
1617 * writing into our pipe
1618 */
1619 rc = PTR_ERR(kthread_run(mdc_changelog_send_thread, cs,
1620 "mdc_clg_send_thread"));
1621 if (!IS_ERR_VALUE(rc)) {
1622 CDEBUG(D_CHANGELOG, "start changelog thread\n");
1623 return 0;
1624 }
1625
1626 CERROR("Failed to start changelog thread: %d\n", rc);
1627 OBD_FREE_PTR(cs);
1628 return rc;
1629}
1630
1631static int mdc_ioc_hsm_ct_start(struct obd_export *exp,
1632 struct lustre_kernelcomm *lk);
1633
1634static int mdc_quotacheck(struct obd_device *unused, struct obd_export *exp,
1635 struct obd_quotactl *oqctl)
1636{
1637 struct client_obd *cli = &exp->exp_obd->u.cli;
1638 struct ptlrpc_request *req;
1639 struct obd_quotactl *body;
1640 int rc;
d7e09d03
PT		 1641
1642 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
1643 &RQF_MDS_QUOTACHECK, LUSTRE_MDS_VERSION,
1644 MDS_QUOTACHECK);
1645 if (req == NULL)
0a3bdb00 1646 return -ENOMEM;
d7e09d03
PT		 1647
1648 body = req_capsule_client_get(&req->rq_pill, &RMF_OBD_QUOTACTL);
1649 *body = *oqctl;
1650
1651 ptlrpc_request_set_replen(req);
1652
1653 /* the next poll will find -ENODATA, that means quotacheck is
1654 * going on */
1655 cli->cl_qchk_stat = -ENODATA;
1656 rc = ptlrpc_queue_wait(req);
1657 if (rc)
1658 cli->cl_qchk_stat = rc;
1659 ptlrpc_req_finished(req);
0a3bdb00 1660 return rc;
d7e09d03
PT		 1661}
1662
1663static int mdc_quota_poll_check(struct obd_export *exp,
1664 struct if_quotacheck *qchk)
1665{
1666 struct client_obd *cli = &exp->exp_obd->u.cli;
1667 int rc;
d7e09d03
PT		 1668
1669 qchk->obd_uuid = cli->cl_target_uuid;
1670 memcpy(qchk->obd_type, LUSTRE_MDS_NAME, strlen(LUSTRE_MDS_NAME));
1671
1672 rc = cli->cl_qchk_stat;
1673 /* the client is not the previous one */
1674 if (rc == CL_NOT_QUOTACHECKED)
1675 rc = -EINTR;
0a3bdb00 1676 return rc;
d7e09d03
PT		 1677}
1678
1679static int mdc_quotactl(struct obd_device *unused, struct obd_export *exp,
1680 struct obd_quotactl *oqctl)
1681{
1682 struct ptlrpc_request *req;
1683 struct obd_quotactl *oqc;
1684 int rc;
d7e09d03
PT		 1685
1686 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
1687 &RQF_MDS_QUOTACTL, LUSTRE_MDS_VERSION,
1688 MDS_QUOTACTL);
1689 if (req == NULL)
0a3bdb00 1690 return -ENOMEM;
d7e09d03
PT		 1691
1692 oqc = req_capsule_client_get(&req->rq_pill, &RMF_OBD_QUOTACTL);
1693 *oqc = *oqctl;
1694
1695 ptlrpc_request_set_replen(req);
1696 ptlrpc_at_set_req_timeout(req);
1697 req->rq_no_resend = 1;
1698
1699 rc = ptlrpc_queue_wait(req);
1700 if (rc)
1701 CERROR("ptlrpc_queue_wait failed, rc: %d\n", rc);
1702
4a87df3e
CP		 1703 if (req->rq_repmsg) {
1704 oqc = req_capsule_server_get(&req->rq_pill, &RMF_OBD_QUOTACTL);
1705 if (oqc) {
1706 *oqctl = *oqc;
1707 } else if (!rc) {
ffdac6ce 1708 CERROR("Can't unpack obd_quotactl\n");
4a87df3e
CP		 1709 rc = -EPROTO;
1710 }
d7e09d03 1711 } else if (!rc) {
4a87df3e 1712 CERROR("Can't unpack obd_quotactl\n");
d7e09d03
PT		 1713 rc = -EPROTO;
1714 }
1715 ptlrpc_req_finished(req);
1716
0a3bdb00 1717 return rc;
d7e09d03
PT		 1718}
1719
1720static int mdc_ioc_swap_layouts(struct obd_export *exp,
1721 struct md_op_data *op_data)
1722{
1723 LIST_HEAD(cancels);
1724 struct ptlrpc_request *req;
1725 int rc, count;
1726 struct mdc_swap_layouts *msl, *payload;
d7e09d03
PT		 1727
1728 msl = op_data->op_data;
1729
1730 /* When the MDT will get the MDS_SWAP_LAYOUTS RPC the
1731 * first thing it will do is to cancel the 2 layout
1732 * locks hold by this client.
1733 * So the client must cancel its layout locks on the 2 fids
1734 * with the request RPC to avoid extra RPC round trips
1735 */
1736 count = mdc_resource_get_unused(exp, &op_data->op_fid1, &cancels,
1737 LCK_CR, MDS_INODELOCK_LAYOUT);
1738 count += mdc_resource_get_unused(exp, &op_data->op_fid2, &cancels,
1739 LCK_CR, MDS_INODELOCK_LAYOUT);
1740
1741 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1742 &RQF_MDS_SWAP_LAYOUTS);
1743 if (req == NULL) {
1744 ldlm_lock_list_put(&cancels, l_bl_ast, count);
0a3bdb00 1745 return -ENOMEM;
d7e09d03
PT		 1746 }
1747
1748 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
1749 mdc_set_capa_size(req, &RMF_CAPA2, op_data->op_capa2);
1750
1751 rc = mdc_prep_elc_req(exp, req, MDS_SWAP_LAYOUTS, &cancels, count);
1752 if (rc) {
1753 ptlrpc_request_free(req);
0a3bdb00 1754 return rc;
d7e09d03
PT		 1755 }
1756
1757 mdc_swap_layouts_pack(req, op_data);
1758
1759 payload = req_capsule_client_get(&req->rq_pill, &RMF_SWAP_LAYOUTS);
1760 LASSERT(payload);
1761
1762 *payload = *msl;
1763
1764 ptlrpc_request_set_replen(req);
1765
1766 rc = ptlrpc_queue_wait(req);
1767 if (rc)
1768 GOTO(out, rc);
d7e09d03
PT		 1769
1770out:
1771 ptlrpc_req_finished(req);
1772 return rc;
1773}
1774
1775static int mdc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
1776 void *karg, void *uarg)
1777{
1778 struct obd_device *obd = exp->exp_obd;
1779 struct obd_ioctl_data *data = karg;
1780 struct obd_import *imp = obd->u.cli.cl_import;
1781 struct llog_ctxt *ctxt;
1782 int rc;
d7e09d03
PT		 1783
1784 if (!try_module_get(THIS_MODULE)) {
1785 CERROR("Can't get module. Is it alive?");
1786 return -EINVAL;
1787 }
1788 switch (cmd) {
1789 case OBD_IOC_CHANGELOG_SEND:
1790 rc = mdc_ioc_changelog_send(obd, karg);
1791 GOTO(out, rc);
1792 case OBD_IOC_CHANGELOG_CLEAR: {
1793 struct ioc_changelog *icc = karg;
1794 struct changelog_setinfo cs =
1795 {.cs_recno = icc->icc_recno, .cs_id = icc->icc_id};
1796 rc = obd_set_info_async(NULL, exp, strlen(KEY_CHANGELOG_CLEAR),
1797 KEY_CHANGELOG_CLEAR, sizeof(cs), &cs,
1798 NULL);
1799 GOTO(out, rc);
1800 }
1801 case OBD_IOC_FID2PATH:
1802 rc = mdc_ioc_fid2path(exp, karg);
1803 GOTO(out, rc);
1804 case LL_IOC_HSM_CT_START:
1805 rc = mdc_ioc_hsm_ct_start(exp, karg);
78eb9092
TL		 1806 /* ignore if it was already registered on this MDS. */
1807 if (rc == -EEXIST)
1808 rc = 0;
d7e09d03
PT		 1809 GOTO(out, rc);
1810 case LL_IOC_HSM_PROGRESS:
1811 rc = mdc_ioc_hsm_progress(exp, karg);
1812 GOTO(out, rc);
1813 case LL_IOC_HSM_STATE_GET:
1814 rc = mdc_ioc_hsm_state_get(exp, karg);
1815 GOTO(out, rc);
1816 case LL_IOC_HSM_STATE_SET:
1817 rc = mdc_ioc_hsm_state_set(exp, karg);
c1f3d689 1818 GOTO(out, rc);
d7e09d03
PT		 1819 case LL_IOC_HSM_ACTION:
1820 rc = mdc_ioc_hsm_current_action(exp, karg);
1821 GOTO(out, rc);
1822 case LL_IOC_HSM_REQUEST:
1823 rc = mdc_ioc_hsm_request(exp, karg);
1824 GOTO(out, rc);
1825 case OBD_IOC_CLIENT_RECOVER:
1826 rc = ptlrpc_recover_import(imp, data->ioc_inlbuf1, 0);
1827 if (rc < 0)
1828 GOTO(out, rc);
1829 GOTO(out, rc = 0);
1830 case IOC_OSC_SET_ACTIVE:
1831 rc = ptlrpc_set_import_active(imp, data->ioc_offset);
1832 GOTO(out, rc);
1833 case OBD_IOC_PARSE: {
1834 ctxt = llog_get_context(exp->exp_obd, LLOG_CONFIG_REPL_CTXT);
1835 rc = class_config_parse_llog(NULL, ctxt, data->ioc_inlbuf1,
1836 NULL);
1837 llog_ctxt_put(ctxt);
1838 GOTO(out, rc);
1839 }
1840 case OBD_IOC_LLOG_INFO:
1841 case OBD_IOC_LLOG_PRINT: {
1842 ctxt = llog_get_context(obd, LLOG_CONFIG_REPL_CTXT);
1843 rc = llog_ioctl(NULL, ctxt, cmd, data);
1844 llog_ctxt_put(ctxt);
1845 GOTO(out, rc);
1846 }
1847 case OBD_IOC_POLL_QUOTACHECK:
1848 rc = mdc_quota_poll_check(exp, (struct if_quotacheck *)karg);
1849 GOTO(out, rc);
1850 case OBD_IOC_PING_TARGET:
1851 rc = ptlrpc_obd_ping(obd);
1852 GOTO(out, rc);
1853 /*
1854 * Normally IOC_OBD_STATFS, OBD_IOC_QUOTACTL iocontrol are handled by
1855 * LMV instead of MDC. But when the cluster is upgraded from 1.8,
1856 * there'd be no LMV layer thus we might be called here. Eventually
1857 * this code should be removed.
1858 * bz20731, LU-592.
1859 */
1860 case IOC_OBD_STATFS: {
1861 struct obd_statfs stat_buf = {0};
1862
1863 if (*((__u32 *) data->ioc_inlbuf2) != 0)
1864 GOTO(out, rc = -ENODEV);
1865
1866 /* copy UUID */
1867 if (copy_to_user(data->ioc_pbuf2, obd2cli_tgt(obd),
1868 min((int) data->ioc_plen2,
1869 (int) sizeof(struct obd_uuid))))
1870 GOTO(out, rc = -EFAULT);
1871
1872 rc = mdc_statfs(NULL, obd->obd_self_export, &stat_buf,
1873 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
1874 0);
1875 if (rc != 0)
1876 GOTO(out, rc);
1877
1878 if (copy_to_user(data->ioc_pbuf1, &stat_buf,
1879 min((int) data->ioc_plen1,
1880 (int) sizeof(stat_buf))))
1881 GOTO(out, rc = -EFAULT);
1882
1883 GOTO(out, rc = 0);
1884 }
1885 case OBD_IOC_QUOTACTL: {
1886 struct if_quotactl *qctl = karg;
1887 struct obd_quotactl *oqctl;
1888
1889 OBD_ALLOC_PTR(oqctl);
c1f3d689
JH		 1890 if (oqctl == NULL)
1891 GOTO(out, rc = -ENOMEM);
d7e09d03
PT		 1892
1893 QCTL_COPY(oqctl, qctl);
1894 rc = obd_quotactl(exp, oqctl);
1895 if (rc == 0) {
1896 QCTL_COPY(qctl, oqctl);
1897 qctl->qc_valid = QC_MDTIDX;
1898 qctl->obd_uuid = obd->u.cli.cl_target_uuid;
1899 }
c1f3d689 1900
d7e09d03 1901 OBD_FREE_PTR(oqctl);
c1f3d689 1902 GOTO(out, rc);
d7e09d03 1903 }
c1f3d689
JH		 1904 case LL_IOC_GET_CONNECT_FLAGS:
1905 if (copy_to_user(uarg, exp_connect_flags_ptr(exp),
1906 sizeof(*exp_connect_flags_ptr(exp))))
d7e09d03 1907 GOTO(out, rc = -EFAULT);
c1f3d689
JH		 1908
1909 GOTO(out, rc = 0);
1910 case LL_IOC_LOV_SWAP_LAYOUTS:
d7e09d03 1911 rc = mdc_ioc_swap_layouts(exp, karg);
c1f3d689 1912 GOTO(out, rc);
d7e09d03 1913 default:
c1f3d689 1914 CERROR("unrecognised ioctl: cmd = %#x\n", cmd);
d7e09d03
PT		 1915 GOTO(out, rc = -ENOTTY);
1916 }
1917out:
1918 module_put(THIS_MODULE);
1919
1920 return rc;
1921}
1922
1923int mdc_get_info_rpc(struct obd_export *exp,
1924 obd_count keylen, void *key,
1925 int vallen, void *val)
1926{
1927 struct obd_import *imp = class_exp2cliimp(exp);
1928 struct ptlrpc_request *req;
1929 char *tmp;
1930 int rc = -EINVAL;
d7e09d03
PT		 1931
1932 req = ptlrpc_request_alloc(imp, &RQF_MDS_GET_INFO);
1933 if (req == NULL)
0a3bdb00 1934 return -ENOMEM;
d7e09d03
PT		 1935
1936 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_KEY,
1937 RCL_CLIENT, keylen);
1938 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_VALLEN,
1939 RCL_CLIENT, sizeof(__u32));
1940
1941 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GET_INFO);
1942 if (rc) {
1943 ptlrpc_request_free(req);
0a3bdb00 1944 return rc;
d7e09d03
PT		 1945 }
1946
1947 tmp = req_capsule_client_get(&req->rq_pill, &RMF_GETINFO_KEY);
1948 memcpy(tmp, key, keylen);
1949 tmp = req_capsule_client_get(&req->rq_pill, &RMF_GETINFO_VALLEN);
1950 memcpy(tmp, &vallen, sizeof(__u32));
1951
1952 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_VAL,
1953 RCL_SERVER, vallen);
1954 ptlrpc_request_set_replen(req);
1955
1956 rc = ptlrpc_queue_wait(req);
1957 /* -EREMOTE means the get_info result is partial, and it needs to
1958 * continue on another MDT, see fid2path part in lmv_iocontrol */
1959 if (rc == 0 || rc == -EREMOTE) {
1960 tmp = req_capsule_server_get(&req->rq_pill, &RMF_GETINFO_VAL);
1961 memcpy(val, tmp, vallen);
1962 if (ptlrpc_rep_need_swab(req)) {
1963 if (KEY_IS(KEY_FID2PATH))
1964 lustre_swab_fid2path(val);
1965 }
1966 }
1967 ptlrpc_req_finished(req);
1968
0a3bdb00 1969 return rc;
d7e09d03
PT		 1970}
1971
1972static void lustre_swab_hai(struct hsm_action_item *h)
1973{
1974 __swab32s(&h->hai_len);
1975 __swab32s(&h->hai_action);
1976 lustre_swab_lu_fid(&h->hai_fid);
1977 lustre_swab_lu_fid(&h->hai_dfid);
1978 __swab64s(&h->hai_cookie);
1979 __swab64s(&h->hai_extent.offset);
1980 __swab64s(&h->hai_extent.length);
1981 __swab64s(&h->hai_gid);
1982}
1983
1984static void lustre_swab_hal(struct hsm_action_list *h)
1985{
1986 struct hsm_action_item *hai;
1987 int i;
1988
1989 __swab32s(&h->hal_version);
1990 __swab32s(&h->hal_count);
1991 __swab32s(&h->hal_archive_id);
1992 __swab64s(&h->hal_flags);
1993 hai = hai_zero(h);
18dfaebf 1994 for (i = 0; i < h->hal_count; i++, hai = hai_next(hai))
d7e09d03 1995 lustre_swab_hai(hai);
d7e09d03
PT		 1996}
1997
1998static void lustre_swab_kuch(struct kuc_hdr *l)
1999{
2000 __swab16s(&l->kuc_magic);
2001 /* __u8 l->kuc_transport */
2002 __swab16s(&l->kuc_msgtype);
2003 __swab16s(&l->kuc_msglen);
2004}
2005
2006static int mdc_ioc_hsm_ct_start(struct obd_export *exp,
2007 struct lustre_kernelcomm *lk)
2008{
2009 struct obd_import *imp = class_exp2cliimp(exp);
2010 __u32 archive = lk->lk_data;
2011 int rc = 0;
2012
2013 if (lk->lk_group != KUC_GRP_HSM) {
2014 CERROR("Bad copytool group %d\n", lk->lk_group);
2015 return -EINVAL;
2016 }
2017
2018 CDEBUG(D_HSM, "CT start r%d w%d u%d g%d f%#x\n", lk->lk_rfd, lk->lk_wfd,
2019 lk->lk_uid, lk->lk_group, lk->lk_flags);
2020
2021 if (lk->lk_flags & LK_FLG_STOP) {
d7e09d03 2022 /* Unregister with the coordinator */
78eb9092 2023 rc = mdc_ioc_hsm_ct_unregister(imp);
d7e09d03 2024 } else {
78eb9092 2025 rc = mdc_ioc_hsm_ct_register(imp, archive);
d7e09d03
PT		 2026 }
2027
2028 return rc;
2029}
2030
2031/**
2032 * Send a message to any listening copytools
2033 * @param val KUC message (kuc_hdr + hsm_action_list)
2034 * @param len total length of message
2035 */
2036static int mdc_hsm_copytool_send(int len, void *val)
2037{
2038 struct kuc_hdr *lh = (struct kuc_hdr *)val;
2039 struct hsm_action_list *hal = (struct hsm_action_list *)(lh + 1);
2040 int rc;
d7e09d03
PT		 2041
2042 if (len < sizeof(*lh) + sizeof(*hal)) {
2043 CERROR("Short HSM message %d < %d\n", len,
2044 (int) (sizeof(*lh) + sizeof(*hal)));
0a3bdb00 2045 return -EPROTO;
d7e09d03
PT		 2046 }
2047 if (lh->kuc_magic == __swab16(KUC_MAGIC)) {
2048 lustre_swab_kuch(lh);
2049 lustre_swab_hal(hal);
2050 } else if (lh->kuc_magic != KUC_MAGIC) {
2051 CERROR("Bad magic %x!=%x\n", lh->kuc_magic, KUC_MAGIC);
0a3bdb00 2052 return -EPROTO;
d7e09d03
PT		 2053 }
2054
2055 CDEBUG(D_HSM, " Received message mg=%x t=%d m=%d l=%d actions=%d "
2056 "on %s\n",
2057 lh->kuc_magic, lh->kuc_transport, lh->kuc_msgtype,
2058 lh->kuc_msglen, hal->hal_count, hal->hal_fsname);
2059
2060 /* Broadcast to HSM listeners */
2061 rc = libcfs_kkuc_group_put(KUC_GRP_HSM, lh);
2062
0a3bdb00 2063 return rc;
d7e09d03
PT		 2064}
2065
2066/**
2067 * callback function passed to kuc for re-registering each HSM copytool
2068 * running on MDC, after MDT shutdown/recovery.
2069 * @param data archive id served by the copytool
2070 * @param cb_arg callback argument (obd_import)
2071 */
2072static int mdc_hsm_ct_reregister(__u32 data, void *cb_arg)
2073{
2074 struct obd_import *imp = (struct obd_import *)cb_arg;
2075 __u32 archive = data;
2076 int rc;
2077
2078 CDEBUG(D_HA, "recover copytool registration to MDT (archive=%#x)\n",
2079 archive);
2080 rc = mdc_ioc_hsm_ct_register(imp, archive);
2081
2082 /* ignore error if the copytool is already registered */
2083 return ((rc != 0) && (rc != -EEXIST)) ? rc : 0;
2084}
2085
2086/**
2087 * Re-establish all kuc contexts with MDT
2088 * after MDT shutdown/recovery.
2089 */
2090static int mdc_kuc_reregister(struct obd_import *imp)
2091{
2092 /* re-register HSM agents */
2093 return libcfs_kkuc_group_foreach(KUC_GRP_HSM, mdc_hsm_ct_reregister,
2094 (void *)imp);
2095}
2096
2097int mdc_set_info_async(const struct lu_env *env,
2098 struct obd_export *exp,
2099 obd_count keylen, void *key,
2100 obd_count vallen, void *val,
2101 struct ptlrpc_request_set *set)
2102{
2103 struct obd_import *imp = class_exp2cliimp(exp);
2104 int rc;
d7e09d03
PT		 2105
2106 if (KEY_IS(KEY_READ_ONLY)) {
2107 if (vallen != sizeof(int))
0a3bdb00 2108 return -EINVAL;
d7e09d03
PT		 2109
2110 spin_lock(&imp->imp_lock);
2111 if (*((int *)val)) {
2112 imp->imp_connect_flags_orig |= OBD_CONNECT_RDONLY;
2113 imp->imp_connect_data.ocd_connect_flags |=
2114 OBD_CONNECT_RDONLY;
2115 } else {
2116 imp->imp_connect_flags_orig &= ~OBD_CONNECT_RDONLY;
2117 imp->imp_connect_data.ocd_connect_flags &=
2118 ~OBD_CONNECT_RDONLY;
2119 }
2120 spin_unlock(&imp->imp_lock);
2121
2122 rc = do_set_info_async(imp, MDS_SET_INFO, LUSTRE_MDS_VERSION,
2123 keylen, key, vallen, val, set);
0a3bdb00 2124 return rc;
d7e09d03
PT		 2125 }
2126 if (KEY_IS(KEY_SPTLRPC_CONF)) {
2127 sptlrpc_conf_client_adapt(exp->exp_obd);
0a3bdb00 2128 return 0;
d7e09d03
PT		 2129 }
2130 if (KEY_IS(KEY_FLUSH_CTX)) {
2131 sptlrpc_import_flush_my_ctx(imp);
0a3bdb00 2132 return 0;
d7e09d03 2133 }
d7e09d03
PT		 2134 if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
2135 rc = do_set_info_async(imp, MDS_SET_INFO, LUSTRE_MDS_VERSION,
2136 keylen, key, vallen, val, set);
0a3bdb00 2137 return rc;
d7e09d03
PT		 2138 }
2139 if (KEY_IS(KEY_HSM_COPYTOOL_SEND)) {
2140 rc = mdc_hsm_copytool_send(vallen, val);
0a3bdb00 2141 return rc;
d7e09d03
PT		 2142 }
2143
2144 CERROR("Unknown key %s\n", (char *)key);
0a3bdb00 2145 return -EINVAL;
d7e09d03
PT		 2146}
2147
2148int mdc_get_info(const struct lu_env *env, struct obd_export *exp,
2149 __u32 keylen, void *key, __u32 *vallen, void *val,
2150 struct lov_stripe_md *lsm)
2151{
2152 int rc = -EINVAL;
2153
2154 if (KEY_IS(KEY_MAX_EASIZE)) {
2155 int mdsize, *max_easize;
2156
2157 if (*vallen != sizeof(int))
0a3bdb00 2158 return -EINVAL;
44779340 2159 mdsize = *(int *)val;
d7e09d03
PT		 2160 if (mdsize > exp->exp_obd->u.cli.cl_max_mds_easize)
2161 exp->exp_obd->u.cli.cl_max_mds_easize = mdsize;
2162 max_easize = val;
2163 *max_easize = exp->exp_obd->u.cli.cl_max_mds_easize;
0a3bdb00 2164 return 0;
44779340
BB		 2165 } else if (KEY_IS(KEY_DEFAULT_EASIZE)) {
2166 int *default_easize;
2167
2168 if (*vallen != sizeof(int))
2169 return -EINVAL;
2170 default_easize = val;
2171 *default_easize = exp->exp_obd->u.cli.cl_default_mds_easize;
2172 return 0;
2173 } else if (KEY_IS(KEY_MAX_COOKIESIZE)) {
2174 int mdsize, *max_cookiesize;
2175
2176 if (*vallen != sizeof(int))
2177 return -EINVAL;
2178 mdsize = *(int *)val;
2179 if (mdsize > exp->exp_obd->u.cli.cl_max_mds_cookiesize)
2180 exp->exp_obd->u.cli.cl_max_mds_cookiesize = mdsize;
2181 max_cookiesize = val;
2182 *max_cookiesize = exp->exp_obd->u.cli.cl_max_mds_cookiesize;
2183 return 0;
2184 } else if (KEY_IS(KEY_DEFAULT_COOKIESIZE)) {
2185 int *default_cookiesize;
2186
2187 if (*vallen != sizeof(int))
2188 return -EINVAL;
2189 default_cookiesize = val;
2190 *default_cookiesize =
2191 exp->exp_obd->u.cli.cl_default_mds_cookiesize;
2192 return 0;
d7e09d03
PT		 2193 } else if (KEY_IS(KEY_CONN_DATA)) {
2194 struct obd_import *imp = class_exp2cliimp(exp);
2195 struct obd_connect_data *data = val;
2196
2197 if (*vallen != sizeof(*data))
0a3bdb00 2198 return -EINVAL;
d7e09d03
PT		 2199
2200 *data = imp->imp_connect_data;
0a3bdb00 2201 return 0;
d7e09d03
PT		 2202 } else if (KEY_IS(KEY_TGT_COUNT)) {
2203 *((int *)val) = 1;
0a3bdb00 2204 return 0;
d7e09d03
PT		 2205 }
2206
2207 rc = mdc_get_info_rpc(exp, keylen, key, *vallen, val);
2208
0a3bdb00 2209 return rc;
d7e09d03
PT		 2210}
2211
2212static int mdc_pin(struct obd_export *exp, const struct lu_fid *fid,
2213 struct obd_capa *oc, struct obd_client_handle *handle,
2214 int flags)
2215{
2216 struct ptlrpc_request *req;
2217 struct mdt_body *body;
2218 int rc;
d7e09d03
PT		 2219
2220 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_PIN);
2221 if (req == NULL)
0a3bdb00 2222 return -ENOMEM;
d7e09d03
PT		 2223
2224 mdc_set_capa_size(req, &RMF_CAPA1, oc);
2225
2226 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_PIN);
2227 if (rc) {
2228 ptlrpc_request_free(req);
0a3bdb00 2229 return rc;
d7e09d03
PT		 2230 }
2231
2232 mdc_pack_body(req, fid, oc, 0, 0, -1, flags);
2233
2234 ptlrpc_request_set_replen(req);
2235
2236 mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
2237 rc = ptlrpc_queue_wait(req);
2238 mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
2239 if (rc) {
2240 CERROR("Pin failed: %d\n", rc);
2241 GOTO(err_out, rc);
2242 }
2243
2244 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
2245 if (body == NULL)
2246 GOTO(err_out, rc = -EPROTO);
2247
2248 handle->och_fh = body->handle;
2249 handle->och_magic = OBD_CLIENT_HANDLE_MAGIC;
2250
2251 handle->och_mod = obd_mod_alloc();
2252 if (handle->och_mod == NULL) {
2253 DEBUG_REQ(D_ERROR, req, "can't allocate md_open_data");
2254 GOTO(err_out, rc = -ENOMEM);
2255 }
2256 handle->och_mod->mod_open_req = req; /* will be dropped by unpin */
2257
0a3bdb00 2258 return 0;
d7e09d03
PT		 2259
2260err_out:
2261 ptlrpc_req_finished(req);
0a3bdb00 2262 return rc;
d7e09d03
PT		 2263}
2264
2265static int mdc_unpin(struct obd_export *exp, struct obd_client_handle *handle,
2266 int flag)
2267{
2268 struct ptlrpc_request *req;
2269 struct mdt_body *body;
2270 int rc;
d7e09d03
PT		 2271
2272 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), &RQF_MDS_UNPIN,
2273 LUSTRE_MDS_VERSION, MDS_UNPIN);
2274 if (req == NULL)
0a3bdb00 2275 return -ENOMEM;
d7e09d03
PT		 2276
2277 body = req_capsule_client_get(&req->rq_pill, &RMF_MDT_BODY);
2278 body->handle = handle->och_fh;
2279 body->flags = flag;
2280
2281 ptlrpc_request_set_replen(req);
2282
2283 mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
2284 rc = ptlrpc_queue_wait(req);
2285 mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
2286
2287 if (rc != 0)
2288 CERROR("Unpin failed: %d\n", rc);
2289
2290 ptlrpc_req_finished(req);
2291 ptlrpc_req_finished(handle->och_mod->mod_open_req);
2292
2293 obd_mod_put(handle->och_mod);
0a3bdb00 2294 return rc;
d7e09d03
PT		 2295}
2296
2297int mdc_sync(struct obd_export *exp, const struct lu_fid *fid,
2298 struct obd_capa *oc, struct ptlrpc_request **request)
2299{
2300 struct ptlrpc_request *req;
2301 int rc;
d7e09d03
PT		 2302
2303 *request = NULL;
2304 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_SYNC);
2305 if (req == NULL)
0a3bdb00 2306 return -ENOMEM;
d7e09d03
PT		 2307
2308 mdc_set_capa_size(req, &RMF_CAPA1, oc);
2309
2310 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_SYNC);
2311 if (rc) {
2312 ptlrpc_request_free(req);
0a3bdb00 2313 return rc;
d7e09d03
PT		 2314 }
2315
2316 mdc_pack_body(req, fid, oc, 0, 0, -1, 0);
2317
2318 ptlrpc_request_set_replen(req);
2319
2320 rc = ptlrpc_queue_wait(req);
2321 if (rc)
2322 ptlrpc_req_finished(req);
2323 else
2324 *request = req;
0a3bdb00 2325 return rc;
d7e09d03
PT		 2326}
2327
2328static int mdc_import_event(struct obd_device *obd, struct obd_import *imp,
2329 enum obd_import_event event)
2330{
2331 int rc = 0;
2332
2333 LASSERT(imp->imp_obd == obd);
2334
2335 switch (event) {
2336 case IMP_EVENT_DISCON: {
2337#if 0
2338 /* XXX Pass event up to OBDs stack. used only for FLD now */
2339 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_DISCON, NULL);
2340#endif
2341 break;
2342 }
2343 case IMP_EVENT_INACTIVE: {
2344 struct client_obd *cli = &obd->u.cli;
2345 /*
2346 * Flush current sequence to make client obtain new one
2347 * from server in case of disconnect/reconnect.
2348 */
2349 if (cli->cl_seq != NULL)
2350 seq_client_flush(cli->cl_seq);
2351
2352 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_INACTIVE, NULL);
2353 break;
2354 }
2355 case IMP_EVENT_INVALIDATE: {
2356 struct ldlm_namespace *ns = obd->obd_namespace;
2357
2358 ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY);
2359
2360 break;
2361 }
2362 case IMP_EVENT_ACTIVE:
2363 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVE, NULL);
78eb9092 2364 /* redo the kuc registration after reconnecting */
d7e09d03
PT		 2365 if (rc == 0)
2366 rc = mdc_kuc_reregister(imp);
2367 break;
2368 case IMP_EVENT_OCD:
2369 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_OCD, NULL);
2370 break;
2371 case IMP_EVENT_DEACTIVATE:
2372 case IMP_EVENT_ACTIVATE:
2373 break;
2374 default:
2375 CERROR("Unknown import event %x\n", event);
2376 LBUG();
2377 }
0a3bdb00 2378 return rc;
d7e09d03
PT		 2379}
2380
2381int mdc_fid_alloc(struct obd_export *exp, struct lu_fid *fid,
2382 struct md_op_data *op_data)
2383{
2384 struct client_obd *cli = &exp->exp_obd->u.cli;
2385 struct lu_client_seq *seq = cli->cl_seq;
29aaf496 2386
0a3bdb00 2387 return seq_client_alloc_fid(NULL, seq, fid);
d7e09d03
PT		 2388}
2389
982ec91f
SM		 2390struct obd_uuid *mdc_get_uuid(struct obd_export *exp)
2391{
d7e09d03
PT		 2392 struct client_obd *cli = &exp->exp_obd->u.cli;
2393 return &cli->cl_target_uuid;
2394}
2395
2396/**
2397 * Determine whether the lock can be canceled before replaying it during
2398 * recovery, non zero value will be return if the lock can be canceled,
2399 * or zero returned for not
2400 */
2401static int mdc_cancel_for_recovery(struct ldlm_lock *lock)
2402{
2403 if (lock->l_resource->lr_type != LDLM_IBITS)
0a3bdb00 2404 return 0;
d7e09d03
PT		 2405
2406 /* FIXME: if we ever get into a situation where there are too many
2407 * opened files with open locks on a single node, then we really
2408 * should replay these open locks to reget it */
2409 if (lock->l_policy_data.l_inodebits.bits & MDS_INODELOCK_OPEN)
0a3bdb00 2410 return 0;
d7e09d03 2411
0a3bdb00 2412 return 1;
d7e09d03
PT		 2413}
2414
2415static int mdc_resource_inode_free(struct ldlm_resource *res)
2416{
2417 if (res->lr_lvb_inode)
2418 res->lr_lvb_inode = NULL;
2419
2420 return 0;
2421}
2422
2423struct ldlm_valblock_ops inode_lvbo = {
805e517a 2424 .lvbo_free = mdc_resource_inode_free,
d7e09d03
PT		 2425};
2426
2427static int mdc_setup(struct obd_device *obd, struct lustre_cfg *cfg)
2428{
2429 struct client_obd *cli = &obd->u.cli;
ea7893bb 2430 struct lprocfs_static_vars lvars = { NULL };
d7e09d03 2431 int rc;
d7e09d03 2432
ffdac6ce 2433 OBD_ALLOC(cli->cl_rpc_lock, sizeof(*cli->cl_rpc_lock));
d7e09d03 2434 if (!cli->cl_rpc_lock)
0a3bdb00 2435 return -ENOMEM;
d7e09d03
PT		 2436 mdc_init_rpc_lock(cli->cl_rpc_lock);
2437
2438 ptlrpcd_addref();
2439
ffdac6ce 2440 OBD_ALLOC(cli->cl_close_lock, sizeof(*cli->cl_close_lock));
d7e09d03
PT		 2441 if (!cli->cl_close_lock)
2442 GOTO(err_rpc_lock, rc = -ENOMEM);
2443 mdc_init_rpc_lock(cli->cl_close_lock);
2444
2445 rc = client_obd_setup(obd, cfg);
2446 if (rc)
2447 GOTO(err_close_lock, rc);
2448 lprocfs_mdc_init_vars(&lvars);
2449 lprocfs_obd_setup(obd, lvars.obd_vars);
2450 sptlrpc_lprocfs_cliobd_attach(obd);
2451 ptlrpc_lprocfs_register_obd(obd);
2452
2453 ns_register_cancel(obd->obd_namespace, mdc_cancel_for_recovery);
2454
2455 obd->obd_namespace->ns_lvbo = &inode_lvbo;
2456
2457 rc = obd_llog_init(obd, &obd->obd_olg, obd, NULL);
2458 if (rc) {
2459 mdc_cleanup(obd);
2460 CERROR("failed to setup llogging subsystems\n");
2461 }
2462
0a3bdb00 2463 return rc;
d7e09d03
PT		 2464
2465err_close_lock:
ffdac6ce 2466 OBD_FREE(cli->cl_close_lock, sizeof(*cli->cl_close_lock));
d7e09d03 2467err_rpc_lock:
ffdac6ce 2468 OBD_FREE(cli->cl_rpc_lock, sizeof(*cli->cl_rpc_lock));
d7e09d03 2469 ptlrpcd_decref();
0a3bdb00 2470 return rc;
d7e09d03
PT		 2471}
2472
2473/* Initialize the default and maximum LOV EA and cookie sizes. This allows
44779340
BB		 2474 * us to make MDS RPCs with large enough reply buffers to hold a default
2475 * sized EA and cookie without having to calculate this (via a call into the
2476 * LOV + OSCs) each time we make an RPC. The maximum size is also tracked
2477 * but not used to avoid wastefully vmalloc()'ing large reply buffers when
2478 * a large number of stripes is possible. If a larger reply buffer is
2479 * required it will be reallocated in the ptlrpc layer due to overflow.
2480 */
d7e09d03 2481static int mdc_init_ea_size(struct obd_export *exp, int easize,
44779340 2482 int def_easize, int cookiesize, int def_cookiesize)
d7e09d03
PT		 2483{
2484 struct obd_device *obd = exp->exp_obd;
2485 struct client_obd *cli = &obd->u.cli;
d7e09d03
PT		 2486
2487 if (cli->cl_max_mds_easize < easize)
2488 cli->cl_max_mds_easize = easize;
2489
2490 if (cli->cl_default_mds_easize < def_easize)
2491 cli->cl_default_mds_easize = def_easize;
2492
2493 if (cli->cl_max_mds_cookiesize < cookiesize)
2494 cli->cl_max_mds_cookiesize = cookiesize;
2495
44779340
BB		 2496 if (cli->cl_default_mds_cookiesize < def_cookiesize)
2497 cli->cl_default_mds_cookiesize = def_cookiesize;
2498
0a3bdb00 2499 return 0;
d7e09d03
PT		 2500}
2501
2502static int mdc_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
2503{
2504 int rc = 0;
d7e09d03
PT		 2505
2506 switch (stage) {
2507 case OBD_CLEANUP_EARLY:
2508 break;
2509 case OBD_CLEANUP_EXPORTS:
2510 /* Failsafe, ok if racy */
2511 if (obd->obd_type->typ_refcnt <= 1)
2512 libcfs_kkuc_group_rem(0, KUC_GRP_HSM);
2513
2514 obd_cleanup_client_import(obd);
2515 ptlrpc_lprocfs_unregister_obd(obd);
2516 lprocfs_obd_cleanup(obd);
2517
2518 rc = obd_llog_finish(obd, 0);
2519 if (rc != 0)
2520 CERROR("failed to cleanup llogging subsystems\n");
2521 break;
2522 }
0a3bdb00 2523 return rc;
d7e09d03
PT		 2524}
2525
2526static int mdc_cleanup(struct obd_device *obd)
2527{
2528 struct client_obd *cli = &obd->u.cli;
2529
ffdac6ce
SM		 2530 OBD_FREE(cli->cl_rpc_lock, sizeof(*cli->cl_rpc_lock));
2531 OBD_FREE(cli->cl_close_lock, sizeof(*cli->cl_close_lock));
d7e09d03
PT		 2532
2533 ptlrpcd_decref();
2534
2535 return client_obd_cleanup(obd);
2536}
2537
2538
2539static int mdc_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
2540 struct obd_device *tgt, int *index)
2541{
2542 struct llog_ctxt *ctxt;
2543 int rc;
2544
d7e09d03
PT		 2545 LASSERT(olg == &obd->obd_olg);
2546
2547 rc = llog_setup(NULL, obd, olg, LLOG_CHANGELOG_REPL_CTXT, tgt,
2548 &llog_client_ops);
2549 if (rc)
0a3bdb00 2550 return rc;
d7e09d03
PT		 2551
2552 ctxt = llog_group_get_ctxt(olg, LLOG_CHANGELOG_REPL_CTXT);
2553 llog_initiator_connect(ctxt);
2554 llog_ctxt_put(ctxt);
2555
0a3bdb00 2556 return 0;
d7e09d03
PT		 2557}
2558
2559static int mdc_llog_finish(struct obd_device *obd, int count)
2560{
2561 struct llog_ctxt *ctxt;
2562
d7e09d03
PT		 2563 ctxt = llog_get_context(obd, LLOG_CHANGELOG_REPL_CTXT);
2564 if (ctxt)
2565 llog_cleanup(NULL, ctxt);
2566
0a3bdb00 2567 return 0;
d7e09d03
PT		 2568}
2569
2570static int mdc_process_config(struct obd_device *obd, obd_count len, void *buf)
2571{
2572 struct lustre_cfg *lcfg = buf;
ea7893bb 2573 struct lprocfs_static_vars lvars = { NULL };
d7e09d03
PT		 2574 int rc = 0;
2575
2576 lprocfs_mdc_init_vars(&lvars);
2577 switch (lcfg->lcfg_command) {
2578 default:
2579 rc = class_process_proc_param(PARAM_MDC, lvars.obd_vars,
2580 lcfg, obd);
2581 if (rc > 0)
2582 rc = 0;
2583 break;
2584 }
2585 return(rc);
2586}
2587
2588
2589/* get remote permission for current user on fid */
2590int mdc_get_remote_perm(struct obd_export *exp, const struct lu_fid *fid,
2591 struct obd_capa *oc, __u32 suppgid,
2592 struct ptlrpc_request **request)
2593{
2594 struct ptlrpc_request *req;
2595 int rc;
d7e09d03
PT		 2596
2597 LASSERT(client_is_remote(exp));
2598
2599 *request = NULL;
2600 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_GETATTR);
2601 if (req == NULL)
0a3bdb00 2602 return -ENOMEM;
d7e09d03
PT		 2603
2604 mdc_set_capa_size(req, &RMF_CAPA1, oc);
2605
2606 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR);
2607 if (rc) {
2608 ptlrpc_request_free(req);
0a3bdb00 2609 return rc;
d7e09d03
PT		 2610 }
2611
2612 mdc_pack_body(req, fid, oc, OBD_MD_FLRMTPERM, 0, suppgid, 0);
2613
2614 req_capsule_set_size(&req->rq_pill, &RMF_ACL, RCL_SERVER,
2615 sizeof(struct mdt_remote_perm));
2616
2617 ptlrpc_request_set_replen(req);
2618
2619 rc = ptlrpc_queue_wait(req);
2620 if (rc)
2621 ptlrpc_req_finished(req);
2622 else
2623 *request = req;
0a3bdb00 2624 return rc;
d7e09d03
PT		 2625}
2626
2627static int mdc_interpret_renew_capa(const struct lu_env *env,
2628 struct ptlrpc_request *req, void *args,
2629 int status)
2630{
2631 struct mdc_renew_capa_args *ra = args;
2632 struct mdt_body *body = NULL;
2633 struct lustre_capa *capa;
d7e09d03
PT		 2634
2635 if (status)
2636 GOTO(out, capa = ERR_PTR(status));
2637
2638 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
2639 if (body == NULL)
2640 GOTO(out, capa = ERR_PTR(-EFAULT));
2641
2642 if ((body->valid & OBD_MD_FLOSSCAPA) == 0)
2643 GOTO(out, capa = ERR_PTR(-ENOENT));
2644
2645 capa = req_capsule_server_get(&req->rq_pill, &RMF_CAPA2);
2646 if (!capa)
2647 GOTO(out, capa = ERR_PTR(-EFAULT));
d7e09d03
PT		 2648out:
2649 ra->ra_cb(ra->ra_oc, capa);
2650 return 0;
2651}
2652
2653static int mdc_renew_capa(struct obd_export *exp, struct obd_capa *oc,
2654 renew_capa_cb_t cb)
2655{
2656 struct ptlrpc_request *req;
2657 struct mdc_renew_capa_args *ra;
d7e09d03
PT		 2658
2659 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), &RQF_MDS_GETATTR,
2660 LUSTRE_MDS_VERSION, MDS_GETATTR);
2661 if (req == NULL)
0a3bdb00 2662 return -ENOMEM;
d7e09d03
PT		 2663
2664 /* NB, OBD_MD_FLOSSCAPA is set here, but it doesn't necessarily mean the
2665 * capa to renew is oss capa.
2666 */
2667 mdc_pack_body(req, &oc->c_capa.lc_fid, oc, OBD_MD_FLOSSCAPA, 0, -1, 0);
2668 ptlrpc_request_set_replen(req);
2669
2670 CLASSERT(sizeof(*ra) <= sizeof(req->rq_async_args));
2671 ra = ptlrpc_req_async_args(req);
2672 ra->ra_oc = oc;
2673 ra->ra_cb = cb;
2674 req->rq_interpret_reply = mdc_interpret_renew_capa;
2675 ptlrpcd_add_req(req, PDL_POLICY_LOCAL, -1);
0a3bdb00 2676 return 0;
d7e09d03
PT		 2677}
2678
d7e09d03
PT		 2679struct obd_ops mdc_obd_ops = {
2680 .o_owner = THIS_MODULE,
2681 .o_setup = mdc_setup,
2682 .o_precleanup = mdc_precleanup,
2683 .o_cleanup = mdc_cleanup,
2684 .o_add_conn = client_import_add_conn,
2685 .o_del_conn = client_import_del_conn,
a7c6d5a6 2686 .o_connect = client_connect_import,
d7e09d03
PT		 2687 .o_disconnect = client_disconnect_export,
2688 .o_iocontrol = mdc_iocontrol,
2689 .o_set_info_async = mdc_set_info_async,
2690 .o_statfs = mdc_statfs,
2691 .o_pin = mdc_pin,
2692 .o_unpin = mdc_unpin,
2693 .o_fid_init = client_fid_init,
2694 .o_fid_fini = client_fid_fini,
2695 .o_fid_alloc = mdc_fid_alloc,
2696 .o_import_event = mdc_import_event,
2697 .o_llog_init = mdc_llog_init,
2698 .o_llog_finish = mdc_llog_finish,
2699 .o_get_info = mdc_get_info,
2700 .o_process_config = mdc_process_config,
2701 .o_get_uuid = mdc_get_uuid,
2702 .o_quotactl = mdc_quotactl,
2703 .o_quotacheck = mdc_quotacheck
2704};
2705
2706struct md_ops mdc_md_ops = {
2707 .m_getstatus = mdc_getstatus,
2708 .m_null_inode = mdc_null_inode,
2709 .m_find_cbdata = mdc_find_cbdata,
2710 .m_close = mdc_close,
2711 .m_create = mdc_create,
2712 .m_done_writing = mdc_done_writing,
2713 .m_enqueue = mdc_enqueue,
2714 .m_getattr = mdc_getattr,
2715 .m_getattr_name = mdc_getattr_name,
2716 .m_intent_lock = mdc_intent_lock,
2717 .m_link = mdc_link,
2718 .m_is_subdir = mdc_is_subdir,
2719 .m_rename = mdc_rename,
2720 .m_setattr = mdc_setattr,
2721 .m_setxattr = mdc_setxattr,
2722 .m_getxattr = mdc_getxattr,
2723 .m_sync = mdc_sync,
2724 .m_readpage = mdc_readpage,
2725 .m_unlink = mdc_unlink,
2726 .m_cancel_unused = mdc_cancel_unused,
2727 .m_init_ea_size = mdc_init_ea_size,
2728 .m_set_lock_data = mdc_set_lock_data,
2729 .m_lock_match = mdc_lock_match,
2730 .m_get_lustre_md = mdc_get_lustre_md,
2731 .m_free_lustre_md = mdc_free_lustre_md,
2732 .m_set_open_replay_data = mdc_set_open_replay_data,
2733 .m_clear_open_replay_data = mdc_clear_open_replay_data,
2734 .m_renew_capa = mdc_renew_capa,
2735 .m_unpack_capa = mdc_unpack_capa,
2736 .m_get_remote_perm = mdc_get_remote_perm,
2737 .m_intent_getattr_async = mdc_intent_getattr_async,
2738 .m_revalidate_lock = mdc_revalidate_lock
2739};
2740
2741int __init mdc_init(void)
2742{
2743 int rc;
ea7893bb 2744 struct lprocfs_static_vars lvars = { NULL };
d7e09d03
PT		 2745 lprocfs_mdc_init_vars(&lvars);
2746
2747 rc = class_register_type(&mdc_obd_ops, &mdc_md_ops, lvars.module_vars,
2748 LUSTRE_MDC_NAME, NULL);
0a3bdb00 2749 return rc;
d7e09d03
PT		 2750}
2751
2752static void /*__exit*/ mdc_exit(void)
2753{
2754 class_unregister_type(LUSTRE_MDC_NAME);
2755}
2756
2757MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
2758MODULE_DESCRIPTION("Lustre Metadata Client");
2759MODULE_LICENSE("GPL");
2760
2761module_init(mdc_init);
2762module_exit(mdc_exit);
Linux kernel - Deliverables
This page took 0.499934 seconds and 5 git commands to generate.