projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
staging: add Lustre file system client support
[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;
68 ENTRY;
69
70 /* swabbed already in mdc_enqueue */
71 capa = req_capsule_server_get(&req->rq_pill, field);
72 if (capa == NULL)
73 RETURN(-EPROTO);
74
75 c = alloc_capa(CAPA_SITE_CLIENT);
76 if (IS_ERR(c)) {
77 CDEBUG(D_INFO, "alloc capa failed!\n");
78 RETURN(PTR_ERR(c));
79 } else {
80 c->c_capa = *capa;
81 *oc = c;
82 RETURN(0);
83 }
84}
85
86static inline int mdc_queue_wait(struct ptlrpc_request *req)
87{
88 struct client_obd *cli = &req->rq_import->imp_obd->u.cli;
89 int rc;
90
91 /* mdc_enter_request() ensures that this client has no more
92 * than cl_max_rpcs_in_flight RPCs simultaneously inf light
93 * against an MDT. */
94 rc = mdc_enter_request(cli);
95 if (rc != 0)
96 return rc;
97
98 rc = ptlrpc_queue_wait(req);
99 mdc_exit_request(cli);
100
101 return rc;
102}
103
104/* Helper that implements most of mdc_getstatus and signal_completed_replay. */
105/* XXX this should become mdc_get_info("key"), sending MDS_GET_INFO RPC */
106static int send_getstatus(struct obd_import *imp, struct lu_fid *rootfid,
107 struct obd_capa **pc, int level, int msg_flags)
108{
109 struct ptlrpc_request *req;
110 struct mdt_body *body;
111 int rc;
112 ENTRY;
113
114 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_GETSTATUS,
115 LUSTRE_MDS_VERSION, MDS_GETSTATUS);
116 if (req == NULL)
117 RETURN(-ENOMEM);
118
119 mdc_pack_body(req, NULL, NULL, 0, 0, -1, 0);
120 lustre_msg_add_flags(req->rq_reqmsg, msg_flags);
121 req->rq_send_state = level;
122
123 ptlrpc_request_set_replen(req);
124
125 rc = ptlrpc_queue_wait(req);
126 if (rc)
127 GOTO(out, rc);
128
129 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
130 if (body == NULL)
131 GOTO(out, rc = -EPROTO);
132
133 if (body->valid & OBD_MD_FLMDSCAPA) {
134 rc = mdc_unpack_capa(NULL, req, &RMF_CAPA1, pc);
135 if (rc)
136 GOTO(out, rc);
137 }
138
139 *rootfid = body->fid1;
140 CDEBUG(D_NET,
141 "root fid="DFID", last_committed="LPU64"\n",
142 PFID(rootfid),
143 lustre_msg_get_last_committed(req->rq_repmsg));
144 EXIT;
145out:
146 ptlrpc_req_finished(req);
147 return rc;
148}
149
150/* This should be mdc_get_info("rootfid") */
151int mdc_getstatus(struct obd_export *exp, struct lu_fid *rootfid,
152 struct obd_capa **pc)
153{
154 return send_getstatus(class_exp2cliimp(exp), rootfid, pc,
155 LUSTRE_IMP_FULL, 0);
156}
157
158/*
159 * This function now is known to always saying that it will receive 4 buffers
160 * from server. Even for cases when acl_size and md_size is zero, RPC header
161 * will contain 4 fields and RPC itself will contain zero size fields. This is
162 * because mdt_getattr*() _always_ returns 4 fields, but if acl is not needed
163 * and thus zero, it shrinks it, making zero size. The same story about
164 * md_size. And this is course of problem when client waits for smaller number
165 * of fields. This issue will be fixed later when client gets aware of RPC
166 * layouts. --umka
167 */
168static int mdc_getattr_common(struct obd_export *exp,
169 struct ptlrpc_request *req)
170{
171 struct req_capsule *pill = &req->rq_pill;
172 struct mdt_body *body;
173 void *eadata;
174 int rc;
175 ENTRY;
176
177 /* Request message already built. */
178 rc = ptlrpc_queue_wait(req);
179 if (rc != 0)
180 RETURN(rc);
181
182 /* sanity check for the reply */
183 body = req_capsule_server_get(pill, &RMF_MDT_BODY);
184 if (body == NULL)
185 RETURN(-EPROTO);
186
187 CDEBUG(D_NET, "mode: %o\n", body->mode);
188
189 if (body->eadatasize != 0) {
190 mdc_update_max_ea_from_body(exp, body);
191
192 eadata = req_capsule_server_sized_get(pill, &RMF_MDT_MD,
193 body->eadatasize);
194 if (eadata == NULL)
195 RETURN(-EPROTO);
196 }
197
198 if (body->valid & OBD_MD_FLRMTPERM) {
199 struct mdt_remote_perm *perm;
200
201 LASSERT(client_is_remote(exp));
202 perm = req_capsule_server_swab_get(pill, &RMF_ACL,
203 lustre_swab_mdt_remote_perm);
204 if (perm == NULL)
205 RETURN(-EPROTO);
206 }
207
208 if (body->valid & OBD_MD_FLMDSCAPA) {
209 struct lustre_capa *capa;
210 capa = req_capsule_server_get(pill, &RMF_CAPA1);
211 if (capa == NULL)
212 RETURN(-EPROTO);
213 }
214
215 RETURN(0);
216}
217
218int mdc_getattr(struct obd_export *exp, struct md_op_data *op_data,
219 struct ptlrpc_request **request)
220{
221 struct ptlrpc_request *req;
222 int rc;
223 ENTRY;
224
225 /* Single MDS without an LMV case */
226 if (op_data->op_flags & MF_GET_MDT_IDX) {
227 op_data->op_mds = 0;
228 RETURN(0);
229 }
230 *request = NULL;
231 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_GETATTR);
232 if (req == NULL)
233 RETURN(-ENOMEM);
234
235 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
236
237 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR);
238 if (rc) {
239 ptlrpc_request_free(req);
240 RETURN(rc);
241 }
242
243 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1,
244 op_data->op_valid, op_data->op_mode, -1, 0);
245
246 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
247 op_data->op_mode);
248 if (op_data->op_valid & OBD_MD_FLRMTPERM) {
249 LASSERT(client_is_remote(exp));
250 req_capsule_set_size(&req->rq_pill, &RMF_ACL, RCL_SERVER,
251 sizeof(struct mdt_remote_perm));
252 }
253 ptlrpc_request_set_replen(req);
254
255 rc = mdc_getattr_common(exp, req);
256 if (rc)
257 ptlrpc_req_finished(req);
258 else
259 *request = req;
260 RETURN(rc);
261}
262
263int mdc_getattr_name(struct obd_export *exp, struct md_op_data *op_data,
264 struct ptlrpc_request **request)
265{
266 struct ptlrpc_request *req;
267 int rc;
268 ENTRY;
269
270 *request = NULL;
271 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
272 &RQF_MDS_GETATTR_NAME);
273 if (req == NULL)
274 RETURN(-ENOMEM);
275
276 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
277 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
278 op_data->op_namelen + 1);
279
280 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR_NAME);
281 if (rc) {
282 ptlrpc_request_free(req);
283 RETURN(rc);
284 }
285
286 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1,
287 op_data->op_valid, op_data->op_mode,
288 op_data->op_suppgids[0], 0);
289
290 if (op_data->op_name) {
291 char *name = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
292 LASSERT(strnlen(op_data->op_name, op_data->op_namelen) ==
293 op_data->op_namelen);
294 memcpy(name, op_data->op_name, op_data->op_namelen);
295 }
296
297 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
298 op_data->op_mode);
299 ptlrpc_request_set_replen(req);
300
301 rc = mdc_getattr_common(exp, req);
302 if (rc)
303 ptlrpc_req_finished(req);
304 else
305 *request = req;
306 RETURN(rc);
307}
308
309static int mdc_is_subdir(struct obd_export *exp,
310 const struct lu_fid *pfid,
311 const struct lu_fid *cfid,
312 struct ptlrpc_request **request)
313{
314 struct ptlrpc_request *req;
315 int rc;
316
317 ENTRY;
318
319 *request = NULL;
320 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
321 &RQF_MDS_IS_SUBDIR, LUSTRE_MDS_VERSION,
322 MDS_IS_SUBDIR);
323 if (req == NULL)
324 RETURN(-ENOMEM);
325
326 mdc_is_subdir_pack(req, pfid, cfid, 0);
327 ptlrpc_request_set_replen(req);
328
329 rc = ptlrpc_queue_wait(req);
330 if (rc && rc != -EREMOTE)
331 ptlrpc_req_finished(req);
332 else
333 *request = req;
334 RETURN(rc);
335}
336
337static int mdc_xattr_common(struct obd_export *exp,const struct req_format *fmt,
338 const struct lu_fid *fid,
339 struct obd_capa *oc, int opcode, obd_valid valid,
340 const char *xattr_name, const char *input,
341 int input_size, int output_size, int flags,
342 __u32 suppgid, struct ptlrpc_request **request)
343{
344 struct ptlrpc_request *req;
345 int xattr_namelen = 0;
346 char *tmp;
347 int rc;
348 ENTRY;
349
350 *request = NULL;
351 req = ptlrpc_request_alloc(class_exp2cliimp(exp), fmt);
352 if (req == NULL)
353 RETURN(-ENOMEM);
354
355 mdc_set_capa_size(req, &RMF_CAPA1, oc);
356 if (xattr_name) {
357 xattr_namelen = strlen(xattr_name) + 1;
358 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
359 xattr_namelen);
360 }
361 if (input_size) {
362 LASSERT(input);
363 req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_CLIENT,
364 input_size);
365 }
366
367 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, opcode);
368 if (rc) {
369 ptlrpc_request_free(req);
370 RETURN(rc);
371 }
372
373 if (opcode == MDS_REINT) {
374 struct mdt_rec_setxattr *rec;
375
376 CLASSERT(sizeof(struct mdt_rec_setxattr) ==
377 sizeof(struct mdt_rec_reint));
378 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
379 rec->sx_opcode = REINT_SETXATTR;
380 /* TODO:
381 * cfs_curproc_fs{u,g}id() should replace
382 * current->fs{u,g}id for portability.
383 */
384 rec->sx_fsuid = current_fsuid();
385 rec->sx_fsgid = current_fsgid();
386 rec->sx_cap = cfs_curproc_cap_pack();
387 rec->sx_suppgid1 = suppgid;
388 rec->sx_suppgid2 = -1;
389 rec->sx_fid = *fid;
390 rec->sx_valid = valid | OBD_MD_FLCTIME;
391 rec->sx_time = cfs_time_current_sec();
392 rec->sx_size = output_size;
393 rec->sx_flags = flags;
394
395 mdc_pack_capa(req, &RMF_CAPA1, oc);
396 } else {
397 mdc_pack_body(req, fid, oc, valid, output_size, suppgid, flags);
398 }
399
400 if (xattr_name) {
401 tmp = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
402 memcpy(tmp, xattr_name, xattr_namelen);
403 }
404 if (input_size) {
405 tmp = req_capsule_client_get(&req->rq_pill, &RMF_EADATA);
406 memcpy(tmp, input, input_size);
407 }
408
409 if (req_capsule_has_field(&req->rq_pill, &RMF_EADATA, RCL_SERVER))
410 req_capsule_set_size(&req->rq_pill, &RMF_EADATA,
411 RCL_SERVER, output_size);
412 ptlrpc_request_set_replen(req);
413
414 /* make rpc */
415 if (opcode == MDS_REINT)
416 mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
417
418 rc = ptlrpc_queue_wait(req);
419
420 if (opcode == MDS_REINT)
421 mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
422
423 if (rc)
424 ptlrpc_req_finished(req);
425 else
426 *request = req;
427 RETURN(rc);
428}
429
430int mdc_setxattr(struct obd_export *exp, const struct lu_fid *fid,
431 struct obd_capa *oc, obd_valid valid, const char *xattr_name,
432 const char *input, int input_size, int output_size,
433 int flags, __u32 suppgid, struct ptlrpc_request **request)
434{
435 return mdc_xattr_common(exp, &RQF_MDS_REINT_SETXATTR,
436 fid, oc, MDS_REINT, valid, xattr_name,
437 input, input_size, output_size, flags,
438 suppgid, request);
439}
440
441int mdc_getxattr(struct obd_export *exp, const struct lu_fid *fid,
442 struct obd_capa *oc, obd_valid valid, const char *xattr_name,
443 const char *input, int input_size, int output_size,
444 int flags, struct ptlrpc_request **request)
445{
446 return mdc_xattr_common(exp, &RQF_MDS_GETXATTR,
447 fid, oc, MDS_GETXATTR, valid, xattr_name,
448 input, input_size, output_size, flags,
449 -1, request);
450}
451
452#ifdef CONFIG_FS_POSIX_ACL
453static int mdc_unpack_acl(struct ptlrpc_request *req, struct lustre_md *md)
454{
455 struct req_capsule *pill = &req->rq_pill;
456 struct mdt_body *body = md->body;
457 struct posix_acl *acl;
458 void *buf;
459 int rc;
460 ENTRY;
461
462 if (!body->aclsize)
463 RETURN(0);
464
465 buf = req_capsule_server_sized_get(pill, &RMF_ACL, body->aclsize);
466
467 if (!buf)
468 RETURN(-EPROTO);
469
470 acl = posix_acl_from_xattr(&init_user_ns, buf, body->aclsize);
471 if (IS_ERR(acl)) {
472 rc = PTR_ERR(acl);
473 CERROR("convert xattr to acl: %d\n", rc);
474 RETURN(rc);
475 }
476
477 rc = posix_acl_valid(acl);
478 if (rc) {
479 CERROR("validate acl: %d\n", rc);
480 posix_acl_release(acl);
481 RETURN(rc);
482 }
483
484 md->posix_acl = acl;
485 RETURN(0);
486}
487#else
488#define mdc_unpack_acl(req, md) 0
489#endif
490
491int mdc_get_lustre_md(struct obd_export *exp, struct ptlrpc_request *req,
492 struct obd_export *dt_exp, struct obd_export *md_exp,
493 struct lustre_md *md)
494{
495 struct req_capsule *pill = &req->rq_pill;
496 int rc;
497 ENTRY;
498
499 LASSERT(md);
500 memset(md, 0, sizeof(*md));
501
502 md->body = req_capsule_server_get(pill, &RMF_MDT_BODY);
503 LASSERT(md->body != NULL);
504
505 if (md->body->valid & OBD_MD_FLEASIZE) {
506 int lmmsize;
507 struct lov_mds_md *lmm;
508
509 if (!S_ISREG(md->body->mode)) {
510 CDEBUG(D_INFO, "OBD_MD_FLEASIZE set, should be a "
511 "regular file, but is not\n");
512 GOTO(out, rc = -EPROTO);
513 }
514
515 if (md->body->eadatasize == 0) {
516 CDEBUG(D_INFO, "OBD_MD_FLEASIZE set, "
517 "but eadatasize 0\n");
518 GOTO(out, rc = -EPROTO);
519 }
520 lmmsize = md->body->eadatasize;
521 lmm = req_capsule_server_sized_get(pill, &RMF_MDT_MD, lmmsize);
522 if (!lmm)
523 GOTO(out, rc = -EPROTO);
524
525 rc = obd_unpackmd(dt_exp, &md->lsm, lmm, lmmsize);
526 if (rc < 0)
527 GOTO(out, rc);
528
529 if (rc < sizeof(*md->lsm)) {
530 CDEBUG(D_INFO, "lsm size too small: "
531 "rc < sizeof (*md->lsm) (%d < %d)\n",
532 rc, (int)sizeof(*md->lsm));
533 GOTO(out, rc = -EPROTO);
534 }
535
536 } else if (md->body->valid & OBD_MD_FLDIREA) {
537 int lmvsize;
538 struct lov_mds_md *lmv;
539
540 if(!S_ISDIR(md->body->mode)) {
541 CDEBUG(D_INFO, "OBD_MD_FLDIREA set, should be a "
542 "directory, but is not\n");
543 GOTO(out, rc = -EPROTO);
544 }
545
546 if (md->body->eadatasize == 0) {
547 CDEBUG(D_INFO, "OBD_MD_FLDIREA is set, "
548 "but eadatasize 0\n");
549 RETURN(-EPROTO);
550 }
551 if (md->body->valid & OBD_MD_MEA) {
552 lmvsize = md->body->eadatasize;
553 lmv = req_capsule_server_sized_get(pill, &RMF_MDT_MD,
554 lmvsize);
555 if (!lmv)
556 GOTO(out, rc = -EPROTO);
557
558 rc = obd_unpackmd(md_exp, (void *)&md->mea, lmv,
559 lmvsize);
560 if (rc < 0)
561 GOTO(out, rc);
562
563 if (rc < sizeof(*md->mea)) {
564 CDEBUG(D_INFO, "size too small: "
565 "rc < sizeof(*md->mea) (%d < %d)\n",
566 rc, (int)sizeof(*md->mea));
567 GOTO(out, rc = -EPROTO);
568 }
569 }
570 }
571 rc = 0;
572
573 if (md->body->valid & OBD_MD_FLRMTPERM) {
574 /* remote permission */
575 LASSERT(client_is_remote(exp));
576 md->remote_perm = req_capsule_server_swab_get(pill, &RMF_ACL,
577 lustre_swab_mdt_remote_perm);
578 if (!md->remote_perm)
579 GOTO(out, rc = -EPROTO);
580 }
581 else if (md->body->valid & OBD_MD_FLACL) {
582 /* for ACL, it's possible that FLACL is set but aclsize is zero.
583 * only when aclsize != 0 there's an actual segment for ACL
584 * in reply buffer.
585 */
586 if (md->body->aclsize) {
587 rc = mdc_unpack_acl(req, md);
588 if (rc)
589 GOTO(out, rc);
590#ifdef CONFIG_FS_POSIX_ACL
591 } else {
592 md->posix_acl = NULL;
593#endif
594 }
595 }
596 if (md->body->valid & OBD_MD_FLMDSCAPA) {
597 struct obd_capa *oc = NULL;
598
599 rc = mdc_unpack_capa(NULL, req, &RMF_CAPA1, &oc);
600 if (rc)
601 GOTO(out, rc);
602 md->mds_capa = oc;
603 }
604
605 if (md->body->valid & OBD_MD_FLOSSCAPA) {
606 struct obd_capa *oc = NULL;
607
608 rc = mdc_unpack_capa(NULL, req, &RMF_CAPA2, &oc);
609 if (rc)
610 GOTO(out, rc);
611 md->oss_capa = oc;
612 }
613
614 EXIT;
615out:
616 if (rc) {
617 if (md->oss_capa) {
618 capa_put(md->oss_capa);
619 md->oss_capa = NULL;
620 }
621 if (md->mds_capa) {
622 capa_put(md->mds_capa);
623 md->mds_capa = NULL;
624 }
625#ifdef CONFIG_FS_POSIX_ACL
626 posix_acl_release(md->posix_acl);
627#endif
628 if (md->lsm)
629 obd_free_memmd(dt_exp, &md->lsm);
630 }
631 return rc;
632}
633
634int mdc_free_lustre_md(struct obd_export *exp, struct lustre_md *md)
635{
636 ENTRY;
637 RETURN(0);
638}
639
640/**
641 * Handles both OPEN and SETATTR RPCs for OPEN-CLOSE and SETATTR-DONE_WRITING
642 * RPC chains.
643 */
644void mdc_replay_open(struct ptlrpc_request *req)
645{
646 struct md_open_data *mod = req->rq_cb_data;
647 struct ptlrpc_request *close_req;
648 struct obd_client_handle *och;
649 struct lustre_handle old;
650 struct mdt_body *body;
651 ENTRY;
652
653 if (mod == NULL) {
654 DEBUG_REQ(D_ERROR, req,
655 "Can't properly replay without open data.");
656 EXIT;
657 return;
658 }
659
660 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
661 LASSERT(body != NULL);
662
663 och = mod->mod_och;
664 if (och != NULL) {
665 struct lustre_handle *file_fh;
666
667 LASSERT(och->och_magic == OBD_CLIENT_HANDLE_MAGIC);
668
669 file_fh = &och->och_fh;
670 CDEBUG(D_HA, "updating handle from "LPX64" to "LPX64"\n",
671 file_fh->cookie, body->handle.cookie);
672 old = *file_fh;
673 *file_fh = body->handle;
674 }
675 close_req = mod->mod_close_req;
676 if (close_req != NULL) {
677 __u32 opc = lustre_msg_get_opc(close_req->rq_reqmsg);
678 struct mdt_ioepoch *epoch;
679
680 LASSERT(opc == MDS_CLOSE || opc == MDS_DONE_WRITING);
681 epoch = req_capsule_client_get(&close_req->rq_pill,
682 &RMF_MDT_EPOCH);
683 LASSERT(epoch);
684
685 if (och != NULL)
686 LASSERT(!memcmp(&old, &epoch->handle, sizeof(old)));
687 DEBUG_REQ(D_HA, close_req, "updating close body with new fh");
688 epoch->handle = body->handle;
689 }
690 EXIT;
691}
692
693void mdc_commit_open(struct ptlrpc_request *req)
694{
695 struct md_open_data *mod = req->rq_cb_data;
696 if (mod == NULL)
697 return;
698
699 /**
700 * No need to touch md_open_data::mod_och, it holds a reference on
701 * \var mod and will zero references to each other, \var mod will be
702 * freed after that when md_open_data::mod_och will put the reference.
703 */
704
705 /**
706 * Do not let open request to disappear as it still may be needed
707 * for close rpc to happen (it may happen on evict only, otherwise
708 * ptlrpc_request::rq_replay does not let mdc_commit_open() to be
709 * called), just mark this rpc as committed to distinguish these 2
710 * cases, see mdc_close() for details. The open request reference will
711 * be put along with freeing \var mod.
712 */
713 ptlrpc_request_addref(req);
714 spin_lock(&req->rq_lock);
715 req->rq_committed = 1;
716 spin_unlock(&req->rq_lock);
717 req->rq_cb_data = NULL;
718 obd_mod_put(mod);
719}
720
721int mdc_set_open_replay_data(struct obd_export *exp,
722 struct obd_client_handle *och,
723 struct ptlrpc_request *open_req)
724{
725 struct md_open_data *mod;
726 struct mdt_rec_create *rec;
727 struct mdt_body *body;
728 struct obd_import *imp = open_req->rq_import;
729 ENTRY;
730
731 if (!open_req->rq_replay)
732 RETURN(0);
733
734 rec = req_capsule_client_get(&open_req->rq_pill, &RMF_REC_REINT);
735 body = req_capsule_server_get(&open_req->rq_pill, &RMF_MDT_BODY);
736 LASSERT(rec != NULL);
737 /* Incoming message in my byte order (it's been swabbed). */
738 /* Outgoing messages always in my byte order. */
739 LASSERT(body != NULL);
740
741 /* Only if the import is replayable, we set replay_open data */
742 if (och && imp->imp_replayable) {
743 mod = obd_mod_alloc();
744 if (mod == NULL) {
745 DEBUG_REQ(D_ERROR, open_req,
746 "Can't allocate md_open_data");
747 RETURN(0);
748 }
749
750 /**
751 * Take a reference on \var mod, to be freed on mdc_close().
752 * It protects \var mod from being freed on eviction (commit
753 * callback is called despite rq_replay flag).
754 * Another reference for \var och.
755 */
756 obd_mod_get(mod);
757 obd_mod_get(mod);
758
759 spin_lock(&open_req->rq_lock);
760 och->och_mod = mod;
761 mod->mod_och = och;
762 mod->mod_open_req = open_req;
763 open_req->rq_cb_data = mod;
764 open_req->rq_commit_cb = mdc_commit_open;
765 spin_unlock(&open_req->rq_lock);
766 }
767
768 rec->cr_fid2 = body->fid1;
769 rec->cr_ioepoch = body->ioepoch;
770 rec->cr_old_handle.cookie = body->handle.cookie;
771 open_req->rq_replay_cb = mdc_replay_open;
772 if (!fid_is_sane(&body->fid1)) {
773 DEBUG_REQ(D_ERROR, open_req, "Saving replay request with "
774 "insane fid");
775 LBUG();
776 }
777
778 DEBUG_REQ(D_RPCTRACE, open_req, "Set up open replay data");
779 RETURN(0);
780}
781
782int mdc_clear_open_replay_data(struct obd_export *exp,
783 struct obd_client_handle *och)
784{
785 struct md_open_data *mod = och->och_mod;
786 ENTRY;
787
788 /**
789 * It is possible to not have \var mod in a case of eviction between
790 * lookup and ll_file_open().
791 **/
792 if (mod == NULL)
793 RETURN(0);
794
795 LASSERT(mod != LP_POISON);
796
797 mod->mod_och = NULL;
798 och->och_mod = NULL;
799 obd_mod_put(mod);
800
801 RETURN(0);
802}
803
804/* Prepares the request for the replay by the given reply */
805static void mdc_close_handle_reply(struct ptlrpc_request *req,
806 struct md_op_data *op_data, int rc) {
807 struct mdt_body *repbody;
808 struct mdt_ioepoch *epoch;
809
810 if (req && rc == -EAGAIN) {
811 repbody = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
812 epoch = req_capsule_client_get(&req->rq_pill, &RMF_MDT_EPOCH);
813
814 epoch->flags |= MF_SOM_AU;
815 if (repbody->valid & OBD_MD_FLGETATTRLOCK)
816 op_data->op_flags |= MF_GETATTR_LOCK;
817 }
818}
819
820int mdc_close(struct obd_export *exp, struct md_op_data *op_data,
821 struct md_open_data *mod, struct ptlrpc_request **request)
822{
823 struct obd_device *obd = class_exp2obd(exp);
824 struct ptlrpc_request *req;
825 int rc;
826 ENTRY;
827
828 *request = NULL;
829 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_CLOSE);
830 if (req == NULL)
831 RETURN(-ENOMEM);
832
833 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
834
835 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_CLOSE);
836 if (rc) {
837 ptlrpc_request_free(req);
838 RETURN(rc);
839 }
840
841 /* To avoid a livelock (bug 7034), we need to send CLOSE RPCs to a
842 * portal whose threads are not taking any DLM locks and are therefore
843 * always progressing */
844 req->rq_request_portal = MDS_READPAGE_PORTAL;
845 ptlrpc_at_set_req_timeout(req);
846
847 /* Ensure that this close's handle is fixed up during replay. */
848 if (likely(mod != NULL)) {
849 LASSERTF(mod->mod_open_req != NULL &&
850 mod->mod_open_req->rq_type != LI_POISON,
851 "POISONED open %p!\n", mod->mod_open_req);
852
853 mod->mod_close_req = req;
854
855 DEBUG_REQ(D_HA, mod->mod_open_req, "matched open");
856 /* We no longer want to preserve this open for replay even
857 * though the open was committed. b=3632, b=3633 */
858 spin_lock(&mod->mod_open_req->rq_lock);
859 mod->mod_open_req->rq_replay = 0;
860 spin_unlock(&mod->mod_open_req->rq_lock);
861 } else {
862 CDEBUG(D_HA, "couldn't find open req; expecting close error\n");
863 }
864
865 mdc_close_pack(req, op_data);
866
867 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
868 obd->u.cli.cl_max_mds_easize);
869 req_capsule_set_size(&req->rq_pill, &RMF_LOGCOOKIES, RCL_SERVER,
870 obd->u.cli.cl_max_mds_cookiesize);
871
872 ptlrpc_request_set_replen(req);
873
874 mdc_get_rpc_lock(obd->u.cli.cl_close_lock, NULL);
875 rc = ptlrpc_queue_wait(req);
876 mdc_put_rpc_lock(obd->u.cli.cl_close_lock, NULL);
877
878 if (req->rq_repmsg == NULL) {
879 CDEBUG(D_RPCTRACE, "request failed to send: %p, %d\n", req,
880 req->rq_status);
881 if (rc == 0)
882 rc = req->rq_status ?: -EIO;
883 } else if (rc == 0 || rc == -EAGAIN) {
884 struct mdt_body *body;
885
886 rc = lustre_msg_get_status(req->rq_repmsg);
887 if (lustre_msg_get_type(req->rq_repmsg) == PTL_RPC_MSG_ERR) {
888 DEBUG_REQ(D_ERROR, req, "type == PTL_RPC_MSG_ERR, err "
889 "= %d", rc);
890 if (rc > 0)
891 rc = -rc;
892 }
893 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
894 if (body == NULL)
895 rc = -EPROTO;
896 } else if (rc == -ESTALE) {
897 /**
898 * it can be allowed error after 3633 if open was committed and
899 * server failed before close was sent. Let's check if mod
900 * exists and return no error in that case
901 */
902 if (mod) {
903 DEBUG_REQ(D_HA, req, "Reset ESTALE = %d", rc);
904 LASSERT(mod->mod_open_req != NULL);
905 if (mod->mod_open_req->rq_committed)
906 rc = 0;
907 }
908 }
909
910 if (mod) {
911 if (rc != 0)
912 mod->mod_close_req = NULL;
913 /* Since now, mod is accessed through open_req only,
914 * thus close req does not keep a reference on mod anymore. */
915 obd_mod_put(mod);
916 }
917 *request = req;
918 mdc_close_handle_reply(req, op_data, rc);
919 RETURN(rc);
920}
921
922int mdc_done_writing(struct obd_export *exp, struct md_op_data *op_data,
923 struct md_open_data *mod)
924{
925 struct obd_device *obd = class_exp2obd(exp);
926 struct ptlrpc_request *req;
927 int rc;
928 ENTRY;
929
930 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
931 &RQF_MDS_DONE_WRITING);
932 if (req == NULL)
933 RETURN(-ENOMEM);
934
935 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
936 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_DONE_WRITING);
937 if (rc) {
938 ptlrpc_request_free(req);
939 RETURN(rc);
940 }
941
942 if (mod != NULL) {
943 LASSERTF(mod->mod_open_req != NULL &&
944 mod->mod_open_req->rq_type != LI_POISON,
945 "POISONED setattr %p!\n", mod->mod_open_req);
946
947 mod->mod_close_req = req;
948 DEBUG_REQ(D_HA, mod->mod_open_req, "matched setattr");
949 /* We no longer want to preserve this setattr for replay even
950 * though the open was committed. b=3632, b=3633 */
951 spin_lock(&mod->mod_open_req->rq_lock);
952 mod->mod_open_req->rq_replay = 0;
953 spin_unlock(&mod->mod_open_req->rq_lock);
954 }
955
956 mdc_close_pack(req, op_data);
957 ptlrpc_request_set_replen(req);
958
959 mdc_get_rpc_lock(obd->u.cli.cl_close_lock, NULL);
960 rc = ptlrpc_queue_wait(req);
961 mdc_put_rpc_lock(obd->u.cli.cl_close_lock, NULL);
962
963 if (rc == -ESTALE) {
964 /**
965 * it can be allowed error after 3633 if open or setattr were
966 * committed and server failed before close was sent.
967 * Let's check if mod exists and return no error in that case
968 */
969 if (mod) {
970 LASSERT(mod->mod_open_req != NULL);
971 if (mod->mod_open_req->rq_committed)
972 rc = 0;
973 }
974 }
975
976 if (mod) {
977 if (rc != 0)
978 mod->mod_close_req = NULL;
979 /* Since now, mod is accessed through setattr req only,
980 * thus DW req does not keep a reference on mod anymore. */
981 obd_mod_put(mod);
982 }
983
984 mdc_close_handle_reply(req, op_data, rc);
985 ptlrpc_req_finished(req);
986 RETURN(rc);
987}
988
989
990int mdc_readpage(struct obd_export *exp, struct md_op_data *op_data,
991 struct page **pages, struct ptlrpc_request **request)
992{
993 struct ptlrpc_request *req;
994 struct ptlrpc_bulk_desc *desc;
995 int i;
996 wait_queue_head_t waitq;
997 int resends = 0;
998 struct l_wait_info lwi;
999 int rc;
1000 ENTRY;
1001
1002 *request = NULL;
1003 init_waitqueue_head(&waitq);
1004
1005restart_bulk:
1006 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_READPAGE);
1007 if (req == NULL)
1008 RETURN(-ENOMEM);
1009
1010 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
1011
1012 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_READPAGE);
1013 if (rc) {
1014 ptlrpc_request_free(req);
1015 RETURN(rc);
1016 }
1017
1018 req->rq_request_portal = MDS_READPAGE_PORTAL;
1019 ptlrpc_at_set_req_timeout(req);
1020
1021 desc = ptlrpc_prep_bulk_imp(req, op_data->op_npages, 1, BULK_PUT_SINK,
1022 MDS_BULK_PORTAL);
1023 if (desc == NULL) {
1024 ptlrpc_request_free(req);
1025 RETURN(-ENOMEM);
1026 }
1027
1028 /* NB req now owns desc and will free it when it gets freed */
1029 for (i = 0; i < op_data->op_npages; i++)
1030 ptlrpc_prep_bulk_page_pin(desc, pages[i], 0, PAGE_CACHE_SIZE);
1031
1032 mdc_readdir_pack(req, op_data->op_offset,
1033 PAGE_CACHE_SIZE * op_data->op_npages,
1034 &op_data->op_fid1, op_data->op_capa1);
1035
1036 ptlrpc_request_set_replen(req);
1037 rc = ptlrpc_queue_wait(req);
1038 if (rc) {
1039 ptlrpc_req_finished(req);
1040 if (rc != -ETIMEDOUT)
1041 RETURN(rc);
1042
1043 resends++;
1044 if (!client_should_resend(resends, &exp->exp_obd->u.cli)) {
1045 CERROR("too many resend retries, returning error\n");
1046 RETURN(-EIO);
1047 }
1048 lwi = LWI_TIMEOUT_INTR(cfs_time_seconds(resends), NULL, NULL, NULL);
1049 l_wait_event(waitq, 0, &lwi);
1050
1051 goto restart_bulk;
1052 }
1053
1054 rc = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk,
1055 req->rq_bulk->bd_nob_transferred);
1056 if (rc < 0) {
1057 ptlrpc_req_finished(req);
1058 RETURN(rc);
1059 }
1060
1061 if (req->rq_bulk->bd_nob_transferred & ~LU_PAGE_MASK) {
1062 CERROR("Unexpected # bytes transferred: %d (%ld expected)\n",
1063 req->rq_bulk->bd_nob_transferred,
1064 PAGE_CACHE_SIZE * op_data->op_npages);
1065 ptlrpc_req_finished(req);
1066 RETURN(-EPROTO);
1067 }
1068
1069 *request = req;
1070 RETURN(0);
1071}
1072
1073static int mdc_statfs(const struct lu_env *env,
1074 struct obd_export *exp, struct obd_statfs *osfs,
1075 __u64 max_age, __u32 flags)
1076{
1077 struct obd_device *obd = class_exp2obd(exp);
1078 struct ptlrpc_request *req;
1079 struct obd_statfs *msfs;
1080 struct obd_import *imp = NULL;
1081 int rc;
1082 ENTRY;
1083
1084 /*
1085 * Since the request might also come from lprocfs, so we need
1086 * sync this with client_disconnect_export Bug15684
1087 */
1088 down_read(&obd->u.cli.cl_sem);
1089 if (obd->u.cli.cl_import)
1090 imp = class_import_get(obd->u.cli.cl_import);
1091 up_read(&obd->u.cli.cl_sem);
1092 if (!imp)
1093 RETURN(-ENODEV);
1094
1095 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_STATFS,
1096 LUSTRE_MDS_VERSION, MDS_STATFS);
1097 if (req == NULL)
1098 GOTO(output, rc = -ENOMEM);
1099
1100 ptlrpc_request_set_replen(req);
1101
1102 if (flags & OBD_STATFS_NODELAY) {
1103 /* procfs requests not want stay in wait for avoid deadlock */
1104 req->rq_no_resend = 1;
1105 req->rq_no_delay = 1;
1106 }
1107
1108 rc = ptlrpc_queue_wait(req);
1109 if (rc) {
1110 /* check connection error first */
1111 if (imp->imp_connect_error)
1112 rc = imp->imp_connect_error;
1113 GOTO(out, rc);
1114 }
1115
1116 msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
1117 if (msfs == NULL)
1118 GOTO(out, rc = -EPROTO);
1119
1120 *osfs = *msfs;
1121 EXIT;
1122out:
1123 ptlrpc_req_finished(req);
1124output:
1125 class_import_put(imp);
1126 return rc;
1127}
1128
1129static int mdc_ioc_fid2path(struct obd_export *exp, struct getinfo_fid2path *gf)
1130{
1131 __u32 keylen, vallen;
1132 void *key;
1133 int rc;
1134
1135 if (gf->gf_pathlen > PATH_MAX)
1136 RETURN(-ENAMETOOLONG);
1137 if (gf->gf_pathlen < 2)
1138 RETURN(-EOVERFLOW);
1139
1140 /* Key is KEY_FID2PATH + getinfo_fid2path description */
1141 keylen = cfs_size_round(sizeof(KEY_FID2PATH)) + sizeof(*gf);
1142 OBD_ALLOC(key, keylen);
1143 if (key == NULL)
1144 RETURN(-ENOMEM);
1145 memcpy(key, KEY_FID2PATH, sizeof(KEY_FID2PATH));
1146 memcpy(key + cfs_size_round(sizeof(KEY_FID2PATH)), gf, sizeof(*gf));
1147
1148 CDEBUG(D_IOCTL, "path get "DFID" from "LPU64" #%d\n",
1149 PFID(&gf->gf_fid), gf->gf_recno, gf->gf_linkno);
1150
1151 if (!fid_is_sane(&gf->gf_fid))
1152 GOTO(out, rc = -EINVAL);
1153
1154 /* Val is struct getinfo_fid2path result plus path */
1155 vallen = sizeof(*gf) + gf->gf_pathlen;
1156
1157 rc = obd_get_info(NULL, exp, keylen, key, &vallen, gf, NULL);
1158 if (rc != 0 && rc != -EREMOTE)
1159 GOTO(out, rc);
1160
1161 if (vallen <= sizeof(*gf))
1162 GOTO(out, rc = -EPROTO);
1163 else if (vallen > sizeof(*gf) + gf->gf_pathlen)
1164 GOTO(out, rc = -EOVERFLOW);
1165
1166 CDEBUG(D_IOCTL, "path get "DFID" from "LPU64" #%d\n%s\n",
1167 PFID(&gf->gf_fid), gf->gf_recno, gf->gf_linkno, gf->gf_path);
1168
1169out:
1170 OBD_FREE(key, keylen);
1171 return rc;
1172}
1173
1174static int mdc_ioc_hsm_progress(struct obd_export *exp,
1175 struct hsm_progress_kernel *hpk)
1176{
1177 struct obd_import *imp = class_exp2cliimp(exp);
1178 struct hsm_progress_kernel *req_hpk;
1179 struct ptlrpc_request *req;
1180 int rc;
1181 ENTRY;
1182
1183 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_PROGRESS,
1184 LUSTRE_MDS_VERSION, MDS_HSM_PROGRESS);
1185 if (req == NULL)
1186 GOTO(out, rc = -ENOMEM);
1187
1188 mdc_pack_body(req, NULL, NULL, OBD_MD_FLRMTPERM, 0, 0, 0);
1189
1190 /* Copy hsm_progress struct */
1191 req_hpk = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_PROGRESS);
1192 if (req_hpk == NULL)
1193 GOTO(out, rc = -EPROTO);
1194
1195 *req_hpk = *hpk;
1196
1197 ptlrpc_request_set_replen(req);
1198
1199 rc = mdc_queue_wait(req);
1200 GOTO(out, rc);
1201out:
1202 ptlrpc_req_finished(req);
1203 return rc;
1204}
1205
1206static int mdc_ioc_hsm_ct_register(struct obd_import *imp, __u32 archives)
1207{
1208 __u32 *archive_mask;
1209 struct ptlrpc_request *req;
1210 int rc;
1211 ENTRY;
1212
1213 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_CT_REGISTER,
1214 LUSTRE_MDS_VERSION,
1215 MDS_HSM_CT_REGISTER);
1216 if (req == NULL)
1217 GOTO(out, rc = -ENOMEM);
1218
1219 mdc_pack_body(req, NULL, NULL, OBD_MD_FLRMTPERM, 0, 0, 0);
1220
1221 /* Copy hsm_progress struct */
1222 archive_mask = req_capsule_client_get(&req->rq_pill,
1223 &RMF_MDS_HSM_ARCHIVE);
1224 if (archive_mask == NULL)
1225 GOTO(out, rc = -EPROTO);
1226
1227 *archive_mask = archives;
1228
1229 ptlrpc_request_set_replen(req);
1230
1231 rc = mdc_queue_wait(req);
1232 GOTO(out, rc);
1233out:
1234 ptlrpc_req_finished(req);
1235 return rc;
1236}
1237
1238static int mdc_ioc_hsm_current_action(struct obd_export *exp,
1239 struct md_op_data *op_data)
1240{
1241 struct hsm_current_action *hca = op_data->op_data;
1242 struct hsm_current_action *req_hca;
1243 struct ptlrpc_request *req;
1244 int rc;
1245 ENTRY;
1246
1247 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1248 &RQF_MDS_HSM_ACTION);
1249 if (req == NULL)
1250 RETURN(-ENOMEM);
1251
1252 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
1253
1254 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_ACTION);
1255 if (rc) {
1256 ptlrpc_request_free(req);
1257 RETURN(rc);
1258 }
1259
1260 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1,
1261 OBD_MD_FLRMTPERM, 0, op_data->op_suppgids[0], 0);
1262
1263 ptlrpc_request_set_replen(req);
1264
1265 rc = mdc_queue_wait(req);
1266 if (rc)
1267 GOTO(out, rc);
1268
1269 req_hca = req_capsule_server_get(&req->rq_pill,
1270 &RMF_MDS_HSM_CURRENT_ACTION);
1271 if (req_hca == NULL)
1272 GOTO(out, rc = -EPROTO);
1273
1274 *hca = *req_hca;
1275
1276 EXIT;
1277out:
1278 ptlrpc_req_finished(req);
1279 return rc;
1280}
1281
1282static int mdc_ioc_hsm_ct_unregister(struct obd_import *imp)
1283{
1284 struct ptlrpc_request *req;
1285 int rc;
1286 ENTRY;
1287
1288 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_CT_UNREGISTER,
1289 LUSTRE_MDS_VERSION,
1290 MDS_HSM_CT_UNREGISTER);
1291 if (req == NULL)
1292 GOTO(out, rc = -ENOMEM);
1293
1294 mdc_pack_body(req, NULL, NULL, OBD_MD_FLRMTPERM, 0, 0, 0);
1295
1296 ptlrpc_request_set_replen(req);
1297
1298 rc = mdc_queue_wait(req);
1299 GOTO(out, rc);
1300out:
1301 ptlrpc_req_finished(req);
1302 return rc;
1303}
1304
1305static int mdc_ioc_hsm_state_get(struct obd_export *exp,
1306 struct md_op_data *op_data)
1307{
1308 struct hsm_user_state *hus = op_data->op_data;
1309 struct hsm_user_state *req_hus;
1310 struct ptlrpc_request *req;
1311 int rc;
1312 ENTRY;
1313
1314 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1315 &RQF_MDS_HSM_STATE_GET);
1316 if (req == NULL)
1317 RETURN(-ENOMEM);
1318
1319 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
1320
1321 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_STATE_GET);
1322 if (rc != 0) {
1323 ptlrpc_request_free(req);
1324 RETURN(rc);
1325 }
1326
1327 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1,
1328 OBD_MD_FLRMTPERM, 0, op_data->op_suppgids[0], 0);
1329
1330 ptlrpc_request_set_replen(req);
1331
1332 rc = mdc_queue_wait(req);
1333 if (rc)
1334 GOTO(out, rc);
1335
1336 req_hus = req_capsule_server_get(&req->rq_pill, &RMF_HSM_USER_STATE);
1337 if (req_hus == NULL)
1338 GOTO(out, rc = -EPROTO);
1339
1340 *hus = *req_hus;
1341
1342 EXIT;
1343out:
1344 ptlrpc_req_finished(req);
1345 return rc;
1346}
1347
1348static int mdc_ioc_hsm_state_set(struct obd_export *exp,
1349 struct md_op_data *op_data)
1350{
1351 struct hsm_state_set *hss = op_data->op_data;
1352 struct hsm_state_set *req_hss;
1353 struct ptlrpc_request *req;
1354 int rc;
1355 ENTRY;
1356
1357 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1358 &RQF_MDS_HSM_STATE_SET);
1359 if (req == NULL)
1360 RETURN(-ENOMEM);
1361
1362 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
1363
1364 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_STATE_SET);
1365 if (rc) {
1366 ptlrpc_request_free(req);
1367 RETURN(rc);
1368 }
1369
1370 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1,
1371 OBD_MD_FLRMTPERM, 0, op_data->op_suppgids[0], 0);
1372
1373 /* Copy states */
1374 req_hss = req_capsule_client_get(&req->rq_pill, &RMF_HSM_STATE_SET);
1375 if (req_hss == NULL)
1376 GOTO(out, rc = -EPROTO);
1377 *req_hss = *hss;
1378
1379 ptlrpc_request_set_replen(req);
1380
1381 rc = mdc_queue_wait(req);
1382 GOTO(out, rc);
1383
1384 EXIT;
1385out:
1386 ptlrpc_req_finished(req);
1387 return rc;
1388}
1389
1390static int mdc_ioc_hsm_request(struct obd_export *exp,
1391 struct hsm_user_request *hur)
1392{
1393 struct obd_import *imp = class_exp2cliimp(exp);
1394 struct ptlrpc_request *req;
1395 struct hsm_request *req_hr;
1396 struct hsm_user_item *req_hui;
1397 char *req_opaque;
1398 int rc;
1399 ENTRY;
1400
1401 req = ptlrpc_request_alloc(imp, &RQF_MDS_HSM_REQUEST);
1402 if (req == NULL)
1403 GOTO(out, rc = -ENOMEM);
1404
1405 req_capsule_set_size(&req->rq_pill, &RMF_MDS_HSM_USER_ITEM, RCL_CLIENT,
1406 hur->hur_request.hr_itemcount
1407 * sizeof(struct hsm_user_item));
1408 req_capsule_set_size(&req->rq_pill, &RMF_GENERIC_DATA, RCL_CLIENT,
1409 hur->hur_request.hr_data_len);
1410
1411 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_REQUEST);
1412 if (rc) {
1413 ptlrpc_request_free(req);
1414 RETURN(rc);
1415 }
1416
1417 mdc_pack_body(req, NULL, NULL, OBD_MD_FLRMTPERM, 0, 0, 0);
1418
1419 /* Copy hsm_request struct */
1420 req_hr = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_REQUEST);
1421 if (req_hr == NULL)
1422 GOTO(out, rc = -EPROTO);
1423 *req_hr = hur->hur_request;
1424
1425 /* Copy hsm_user_item structs */
1426 req_hui = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_USER_ITEM);
1427 if (req_hui == NULL)
1428 GOTO(out, rc = -EPROTO);
1429 memcpy(req_hui, hur->hur_user_item,
1430 hur->hur_request.hr_itemcount * sizeof(struct hsm_user_item));
1431
1432 /* Copy opaque field */
1433 req_opaque = req_capsule_client_get(&req->rq_pill, &RMF_GENERIC_DATA);
1434 if (req_opaque == NULL)
1435 GOTO(out, rc = -EPROTO);
1436 memcpy(req_opaque, hur_data(hur), hur->hur_request.hr_data_len);
1437
1438 ptlrpc_request_set_replen(req);
1439
1440 rc = mdc_queue_wait(req);
1441 GOTO(out, rc);
1442
1443out:
1444 ptlrpc_req_finished(req);
1445 return rc;
1446}
1447
1448static struct kuc_hdr *changelog_kuc_hdr(char *buf, int len, int flags)
1449{
1450 struct kuc_hdr *lh = (struct kuc_hdr *)buf;
1451
1452 LASSERT(len <= CR_MAXSIZE);
1453
1454 lh->kuc_magic = KUC_MAGIC;
1455 lh->kuc_transport = KUC_TRANSPORT_CHANGELOG;
1456 lh->kuc_flags = flags;
1457 lh->kuc_msgtype = CL_RECORD;
1458 lh->kuc_msglen = len;
1459 return lh;
1460}
1461
1462#define D_CHANGELOG 0
1463
1464struct changelog_show {
1465 __u64 cs_startrec;
1466 __u32 cs_flags;
1467 struct file *cs_fp;
1468 char *cs_buf;
1469 struct obd_device *cs_obd;
1470};
1471
1472static int changelog_show_cb(const struct lu_env *env, struct llog_handle *llh,
1473 struct llog_rec_hdr *hdr, void *data)
1474{
1475 struct changelog_show *cs = data;
1476 struct llog_changelog_rec *rec = (struct llog_changelog_rec *)hdr;
1477 struct kuc_hdr *lh;
1478 int len, rc;
1479 ENTRY;
1480
1481 if ((rec->cr_hdr.lrh_type != CHANGELOG_REC) ||
1482 (rec->cr.cr_type >= CL_LAST)) {
1483 CERROR("Not a changelog rec %d/%d\n", rec->cr_hdr.lrh_type,
1484 rec->cr.cr_type);
1485 RETURN(-EINVAL);
1486 }
1487
1488 if (rec->cr.cr_index < cs->cs_startrec) {
1489 /* Skip entries earlier than what we are interested in */
1490 CDEBUG(D_CHANGELOG, "rec="LPU64" start="LPU64"\n",
1491 rec->cr.cr_index, cs->cs_startrec);
1492 RETURN(0);
1493 }
1494
1495 CDEBUG(D_CHANGELOG, LPU64" %02d%-5s "LPU64" 0x%x t="DFID" p="DFID
1496 " %.*s\n", rec->cr.cr_index, rec->cr.cr_type,
1497 changelog_type2str(rec->cr.cr_type), rec->cr.cr_time,
1498 rec->cr.cr_flags & CLF_FLAGMASK,
1499 PFID(&rec->cr.cr_tfid), PFID(&rec->cr.cr_pfid),
1500 rec->cr.cr_namelen, changelog_rec_name(&rec->cr));
1501
1502 len = sizeof(*lh) + changelog_rec_size(&rec->cr) + rec->cr.cr_namelen;
1503
1504 /* Set up the message */
1505 lh = changelog_kuc_hdr(cs->cs_buf, len, cs->cs_flags);
1506 memcpy(lh + 1, &rec->cr, len - sizeof(*lh));
1507
1508 rc = libcfs_kkuc_msg_put(cs->cs_fp, lh);
1509 CDEBUG(D_CHANGELOG, "kucmsg fp %p len %d rc %d\n", cs->cs_fp, len,rc);
1510
1511 RETURN(rc);
1512}
1513
1514static int mdc_changelog_send_thread(void *csdata)
1515{
1516 struct changelog_show *cs = csdata;
1517 struct llog_ctxt *ctxt = NULL;
1518 struct llog_handle *llh = NULL;
1519 struct kuc_hdr *kuch;
1520 int rc;
1521
1522 CDEBUG(D_CHANGELOG, "changelog to fp=%p start "LPU64"\n",
1523 cs->cs_fp, cs->cs_startrec);
1524
1525 OBD_ALLOC(cs->cs_buf, CR_MAXSIZE);
1526 if (cs->cs_buf == NULL)
1527 GOTO(out, rc = -ENOMEM);
1528
1529 /* Set up the remote catalog handle */
1530 ctxt = llog_get_context(cs->cs_obd, LLOG_CHANGELOG_REPL_CTXT);
1531 if (ctxt == NULL)
1532 GOTO(out, rc = -ENOENT);
1533 rc = llog_open(NULL, ctxt, &llh, NULL, CHANGELOG_CATALOG,
1534 LLOG_OPEN_EXISTS);
1535 if (rc) {
1536 CERROR("%s: fail to open changelog catalog: rc = %d\n",
1537 cs->cs_obd->obd_name, rc);
1538 GOTO(out, rc);
1539 }
1540 rc = llog_init_handle(NULL, llh, LLOG_F_IS_CAT, NULL);
1541 if (rc) {
1542 CERROR("llog_init_handle failed %d\n", rc);
1543 GOTO(out, rc);
1544 }
1545
1546 rc = llog_cat_process(NULL, llh, changelog_show_cb, cs, 0, 0);
1547
1548 /* Send EOF no matter what our result */
1549 if ((kuch = changelog_kuc_hdr(cs->cs_buf, sizeof(*kuch),
1550 cs->cs_flags))) {
1551 kuch->kuc_msgtype = CL_EOF;
1552 libcfs_kkuc_msg_put(cs->cs_fp, kuch);
1553 }
1554
1555out:
1556 fput(cs->cs_fp);
1557 if (llh)
1558 llog_cat_close(NULL, llh);
1559 if (ctxt)
1560 llog_ctxt_put(ctxt);
1561 if (cs->cs_buf)
1562 OBD_FREE(cs->cs_buf, CR_MAXSIZE);
1563 OBD_FREE_PTR(cs);
1564 return rc;
1565}
1566
1567static int mdc_ioc_changelog_send(struct obd_device *obd,
1568 struct ioc_changelog *icc)
1569{
1570 struct changelog_show *cs;
1571 int rc;
1572
1573 /* Freed in mdc_changelog_send_thread */
1574 OBD_ALLOC_PTR(cs);
1575 if (!cs)
1576 return -ENOMEM;
1577
1578 cs->cs_obd = obd;
1579 cs->cs_startrec = icc->icc_recno;
1580 /* matching fput in mdc_changelog_send_thread */
1581 cs->cs_fp = fget(icc->icc_id);
1582 cs->cs_flags = icc->icc_flags;
1583
1584 /*
1585 * New thread because we should return to user app before
1586 * writing into our pipe
1587 */
1588 rc = PTR_ERR(kthread_run(mdc_changelog_send_thread, cs,
1589 "mdc_clg_send_thread"));
1590 if (!IS_ERR_VALUE(rc)) {
1591 CDEBUG(D_CHANGELOG, "start changelog thread\n");
1592 return 0;
1593 }
1594
1595 CERROR("Failed to start changelog thread: %d\n", rc);
1596 OBD_FREE_PTR(cs);
1597 return rc;
1598}
1599
1600static int mdc_ioc_hsm_ct_start(struct obd_export *exp,
1601 struct lustre_kernelcomm *lk);
1602
1603static int mdc_quotacheck(struct obd_device *unused, struct obd_export *exp,
1604 struct obd_quotactl *oqctl)
1605{
1606 struct client_obd *cli = &exp->exp_obd->u.cli;
1607 struct ptlrpc_request *req;
1608 struct obd_quotactl *body;
1609 int rc;
1610 ENTRY;
1611
1612 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
1613 &RQF_MDS_QUOTACHECK, LUSTRE_MDS_VERSION,
1614 MDS_QUOTACHECK);
1615 if (req == NULL)
1616 RETURN(-ENOMEM);
1617
1618 body = req_capsule_client_get(&req->rq_pill, &RMF_OBD_QUOTACTL);
1619 *body = *oqctl;
1620
1621 ptlrpc_request_set_replen(req);
1622
1623 /* the next poll will find -ENODATA, that means quotacheck is
1624 * going on */
1625 cli->cl_qchk_stat = -ENODATA;
1626 rc = ptlrpc_queue_wait(req);
1627 if (rc)
1628 cli->cl_qchk_stat = rc;
1629 ptlrpc_req_finished(req);
1630 RETURN(rc);
1631}
1632
1633static int mdc_quota_poll_check(struct obd_export *exp,
1634 struct if_quotacheck *qchk)
1635{
1636 struct client_obd *cli = &exp->exp_obd->u.cli;
1637 int rc;
1638 ENTRY;
1639
1640 qchk->obd_uuid = cli->cl_target_uuid;
1641 memcpy(qchk->obd_type, LUSTRE_MDS_NAME, strlen(LUSTRE_MDS_NAME));
1642
1643 rc = cli->cl_qchk_stat;
1644 /* the client is not the previous one */
1645 if (rc == CL_NOT_QUOTACHECKED)
1646 rc = -EINTR;
1647 RETURN(rc);
1648}
1649
1650static int mdc_quotactl(struct obd_device *unused, struct obd_export *exp,
1651 struct obd_quotactl *oqctl)
1652{
1653 struct ptlrpc_request *req;
1654 struct obd_quotactl *oqc;
1655 int rc;
1656 ENTRY;
1657
1658 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
1659 &RQF_MDS_QUOTACTL, LUSTRE_MDS_VERSION,
1660 MDS_QUOTACTL);
1661 if (req == NULL)
1662 RETURN(-ENOMEM);
1663
1664 oqc = req_capsule_client_get(&req->rq_pill, &RMF_OBD_QUOTACTL);
1665 *oqc = *oqctl;
1666
1667 ptlrpc_request_set_replen(req);
1668 ptlrpc_at_set_req_timeout(req);
1669 req->rq_no_resend = 1;
1670
1671 rc = ptlrpc_queue_wait(req);
1672 if (rc)
1673 CERROR("ptlrpc_queue_wait failed, rc: %d\n", rc);
1674
1675 if (req->rq_repmsg &&
1676 (oqc = req_capsule_server_get(&req->rq_pill, &RMF_OBD_QUOTACTL))) {
1677 *oqctl = *oqc;
1678 } else if (!rc) {
1679 CERROR ("Can't unpack obd_quotactl\n");
1680 rc = -EPROTO;
1681 }
1682 ptlrpc_req_finished(req);
1683
1684 RETURN(rc);
1685}
1686
1687static int mdc_ioc_swap_layouts(struct obd_export *exp,
1688 struct md_op_data *op_data)
1689{
1690 LIST_HEAD(cancels);
1691 struct ptlrpc_request *req;
1692 int rc, count;
1693 struct mdc_swap_layouts *msl, *payload;
1694 ENTRY;
1695
1696 msl = op_data->op_data;
1697
1698 /* When the MDT will get the MDS_SWAP_LAYOUTS RPC the
1699 * first thing it will do is to cancel the 2 layout
1700 * locks hold by this client.
1701 * So the client must cancel its layout locks on the 2 fids
1702 * with the request RPC to avoid extra RPC round trips
1703 */
1704 count = mdc_resource_get_unused(exp, &op_data->op_fid1, &cancels,
1705 LCK_CR, MDS_INODELOCK_LAYOUT);
1706 count += mdc_resource_get_unused(exp, &op_data->op_fid2, &cancels,
1707 LCK_CR, MDS_INODELOCK_LAYOUT);
1708
1709 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1710 &RQF_MDS_SWAP_LAYOUTS);
1711 if (req == NULL) {
1712 ldlm_lock_list_put(&cancels, l_bl_ast, count);
1713 RETURN(-ENOMEM);
1714 }
1715
1716 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
1717 mdc_set_capa_size(req, &RMF_CAPA2, op_data->op_capa2);
1718
1719 rc = mdc_prep_elc_req(exp, req, MDS_SWAP_LAYOUTS, &cancels, count);
1720 if (rc) {
1721 ptlrpc_request_free(req);
1722 RETURN(rc);
1723 }
1724
1725 mdc_swap_layouts_pack(req, op_data);
1726
1727 payload = req_capsule_client_get(&req->rq_pill, &RMF_SWAP_LAYOUTS);
1728 LASSERT(payload);
1729
1730 *payload = *msl;
1731
1732 ptlrpc_request_set_replen(req);
1733
1734 rc = ptlrpc_queue_wait(req);
1735 if (rc)
1736 GOTO(out, rc);
1737 EXIT;
1738
1739out:
1740 ptlrpc_req_finished(req);
1741 return rc;
1742}
1743
1744static int mdc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
1745 void *karg, void *uarg)
1746{
1747 struct obd_device *obd = exp->exp_obd;
1748 struct obd_ioctl_data *data = karg;
1749 struct obd_import *imp = obd->u.cli.cl_import;
1750 struct llog_ctxt *ctxt;
1751 int rc;
1752 ENTRY;
1753
1754 if (!try_module_get(THIS_MODULE)) {
1755 CERROR("Can't get module. Is it alive?");
1756 return -EINVAL;
1757 }
1758 switch (cmd) {
1759 case OBD_IOC_CHANGELOG_SEND:
1760 rc = mdc_ioc_changelog_send(obd, karg);
1761 GOTO(out, rc);
1762 case OBD_IOC_CHANGELOG_CLEAR: {
1763 struct ioc_changelog *icc = karg;
1764 struct changelog_setinfo cs =
1765 {.cs_recno = icc->icc_recno, .cs_id = icc->icc_id};
1766 rc = obd_set_info_async(NULL, exp, strlen(KEY_CHANGELOG_CLEAR),
1767 KEY_CHANGELOG_CLEAR, sizeof(cs), &cs,
1768 NULL);
1769 GOTO(out, rc);
1770 }
1771 case OBD_IOC_FID2PATH:
1772 rc = mdc_ioc_fid2path(exp, karg);
1773 GOTO(out, rc);
1774 case LL_IOC_HSM_CT_START:
1775 rc = mdc_ioc_hsm_ct_start(exp, karg);
1776 GOTO(out, rc);
1777 case LL_IOC_HSM_PROGRESS:
1778 rc = mdc_ioc_hsm_progress(exp, karg);
1779 GOTO(out, rc);
1780 case LL_IOC_HSM_STATE_GET:
1781 rc = mdc_ioc_hsm_state_get(exp, karg);
1782 GOTO(out, rc);
1783 case LL_IOC_HSM_STATE_SET:
1784 rc = mdc_ioc_hsm_state_set(exp, karg);
1785 case LL_IOC_HSM_ACTION:
1786 rc = mdc_ioc_hsm_current_action(exp, karg);
1787 GOTO(out, rc);
1788 case LL_IOC_HSM_REQUEST:
1789 rc = mdc_ioc_hsm_request(exp, karg);
1790 GOTO(out, rc);
1791 case OBD_IOC_CLIENT_RECOVER:
1792 rc = ptlrpc_recover_import(imp, data->ioc_inlbuf1, 0);
1793 if (rc < 0)
1794 GOTO(out, rc);
1795 GOTO(out, rc = 0);
1796 case IOC_OSC_SET_ACTIVE:
1797 rc = ptlrpc_set_import_active(imp, data->ioc_offset);
1798 GOTO(out, rc);
1799 case OBD_IOC_PARSE: {
1800 ctxt = llog_get_context(exp->exp_obd, LLOG_CONFIG_REPL_CTXT);
1801 rc = class_config_parse_llog(NULL, ctxt, data->ioc_inlbuf1,
1802 NULL);
1803 llog_ctxt_put(ctxt);
1804 GOTO(out, rc);
1805 }
1806 case OBD_IOC_LLOG_INFO:
1807 case OBD_IOC_LLOG_PRINT: {
1808 ctxt = llog_get_context(obd, LLOG_CONFIG_REPL_CTXT);
1809 rc = llog_ioctl(NULL, ctxt, cmd, data);
1810 llog_ctxt_put(ctxt);
1811 GOTO(out, rc);
1812 }
1813 case OBD_IOC_POLL_QUOTACHECK:
1814 rc = mdc_quota_poll_check(exp, (struct if_quotacheck *)karg);
1815 GOTO(out, rc);
1816 case OBD_IOC_PING_TARGET:
1817 rc = ptlrpc_obd_ping(obd);
1818 GOTO(out, rc);
1819 /*
1820 * Normally IOC_OBD_STATFS, OBD_IOC_QUOTACTL iocontrol are handled by
1821 * LMV instead of MDC. But when the cluster is upgraded from 1.8,
1822 * there'd be no LMV layer thus we might be called here. Eventually
1823 * this code should be removed.
1824 * bz20731, LU-592.
1825 */
1826 case IOC_OBD_STATFS: {
1827 struct obd_statfs stat_buf = {0};
1828
1829 if (*((__u32 *) data->ioc_inlbuf2) != 0)
1830 GOTO(out, rc = -ENODEV);
1831
1832 /* copy UUID */
1833 if (copy_to_user(data->ioc_pbuf2, obd2cli_tgt(obd),
1834 min((int) data->ioc_plen2,
1835 (int) sizeof(struct obd_uuid))))
1836 GOTO(out, rc = -EFAULT);
1837
1838 rc = mdc_statfs(NULL, obd->obd_self_export, &stat_buf,
1839 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
1840 0);
1841 if (rc != 0)
1842 GOTO(out, rc);
1843
1844 if (copy_to_user(data->ioc_pbuf1, &stat_buf,
1845 min((int) data->ioc_plen1,
1846 (int) sizeof(stat_buf))))
1847 GOTO(out, rc = -EFAULT);
1848
1849 GOTO(out, rc = 0);
1850 }
1851 case OBD_IOC_QUOTACTL: {
1852 struct if_quotactl *qctl = karg;
1853 struct obd_quotactl *oqctl;
1854
1855 OBD_ALLOC_PTR(oqctl);
1856 if (!oqctl)
1857 RETURN(-ENOMEM);
1858
1859 QCTL_COPY(oqctl, qctl);
1860 rc = obd_quotactl(exp, oqctl);
1861 if (rc == 0) {
1862 QCTL_COPY(qctl, oqctl);
1863 qctl->qc_valid = QC_MDTIDX;
1864 qctl->obd_uuid = obd->u.cli.cl_target_uuid;
1865 }
1866 OBD_FREE_PTR(oqctl);
1867 break;
1868 }
1869 case LL_IOC_GET_CONNECT_FLAGS: {
1870 if (copy_to_user(uarg,
1871 exp_connect_flags_ptr(exp),
1872 sizeof(__u64)))
1873 GOTO(out, rc = -EFAULT);
1874 else
1875 GOTO(out, rc = 0);
1876 }
1877 case LL_IOC_LOV_SWAP_LAYOUTS: {
1878 rc = mdc_ioc_swap_layouts(exp, karg);
1879 break;
1880 }
1881 default:
1882 CERROR("mdc_ioctl(): unrecognised ioctl %#x\n", cmd);
1883 GOTO(out, rc = -ENOTTY);
1884 }
1885out:
1886 module_put(THIS_MODULE);
1887
1888 return rc;
1889}
1890
1891int mdc_get_info_rpc(struct obd_export *exp,
1892 obd_count keylen, void *key,
1893 int vallen, void *val)
1894{
1895 struct obd_import *imp = class_exp2cliimp(exp);
1896 struct ptlrpc_request *req;
1897 char *tmp;
1898 int rc = -EINVAL;
1899 ENTRY;
1900
1901 req = ptlrpc_request_alloc(imp, &RQF_MDS_GET_INFO);
1902 if (req == NULL)
1903 RETURN(-ENOMEM);
1904
1905 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_KEY,
1906 RCL_CLIENT, keylen);
1907 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_VALLEN,
1908 RCL_CLIENT, sizeof(__u32));
1909
1910 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GET_INFO);
1911 if (rc) {
1912 ptlrpc_request_free(req);
1913 RETURN(rc);
1914 }
1915
1916 tmp = req_capsule_client_get(&req->rq_pill, &RMF_GETINFO_KEY);
1917 memcpy(tmp, key, keylen);
1918 tmp = req_capsule_client_get(&req->rq_pill, &RMF_GETINFO_VALLEN);
1919 memcpy(tmp, &vallen, sizeof(__u32));
1920
1921 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_VAL,
1922 RCL_SERVER, vallen);
1923 ptlrpc_request_set_replen(req);
1924
1925 rc = ptlrpc_queue_wait(req);
1926 /* -EREMOTE means the get_info result is partial, and it needs to
1927 * continue on another MDT, see fid2path part in lmv_iocontrol */
1928 if (rc == 0 || rc == -EREMOTE) {
1929 tmp = req_capsule_server_get(&req->rq_pill, &RMF_GETINFO_VAL);
1930 memcpy(val, tmp, vallen);
1931 if (ptlrpc_rep_need_swab(req)) {
1932 if (KEY_IS(KEY_FID2PATH))
1933 lustre_swab_fid2path(val);
1934 }
1935 }
1936 ptlrpc_req_finished(req);
1937
1938 RETURN(rc);
1939}
1940
1941static void lustre_swab_hai(struct hsm_action_item *h)
1942{
1943 __swab32s(&h->hai_len);
1944 __swab32s(&h->hai_action);
1945 lustre_swab_lu_fid(&h->hai_fid);
1946 lustre_swab_lu_fid(&h->hai_dfid);
1947 __swab64s(&h->hai_cookie);
1948 __swab64s(&h->hai_extent.offset);
1949 __swab64s(&h->hai_extent.length);
1950 __swab64s(&h->hai_gid);
1951}
1952
1953static void lustre_swab_hal(struct hsm_action_list *h)
1954{
1955 struct hsm_action_item *hai;
1956 int i;
1957
1958 __swab32s(&h->hal_version);
1959 __swab32s(&h->hal_count);
1960 __swab32s(&h->hal_archive_id);
1961 __swab64s(&h->hal_flags);
1962 hai = hai_zero(h);
1963 for (i = 0; i < h->hal_count; i++) {
1964 lustre_swab_hai(hai);
1965 hai = hai_next(hai);
1966 }
1967}
1968
1969static void lustre_swab_kuch(struct kuc_hdr *l)
1970{
1971 __swab16s(&l->kuc_magic);
1972 /* __u8 l->kuc_transport */
1973 __swab16s(&l->kuc_msgtype);
1974 __swab16s(&l->kuc_msglen);
1975}
1976
1977static int mdc_ioc_hsm_ct_start(struct obd_export *exp,
1978 struct lustre_kernelcomm *lk)
1979{
1980 struct obd_import *imp = class_exp2cliimp(exp);
1981 __u32 archive = lk->lk_data;
1982 int rc = 0;
1983
1984 if (lk->lk_group != KUC_GRP_HSM) {
1985 CERROR("Bad copytool group %d\n", lk->lk_group);
1986 return -EINVAL;
1987 }
1988
1989 CDEBUG(D_HSM, "CT start r%d w%d u%d g%d f%#x\n", lk->lk_rfd, lk->lk_wfd,
1990 lk->lk_uid, lk->lk_group, lk->lk_flags);
1991
1992 if (lk->lk_flags & LK_FLG_STOP) {
1993 rc = libcfs_kkuc_group_rem(lk->lk_uid, lk->lk_group);
1994 /* Unregister with the coordinator */
1995 if (rc == 0)
1996 rc = mdc_ioc_hsm_ct_unregister(imp);
1997 } else {
1998 struct file *fp = fget(lk->lk_wfd);
1999
2000 rc = libcfs_kkuc_group_add(fp, lk->lk_uid, lk->lk_group,
2001 lk->lk_data);
2002 if (rc && fp)
2003 fput(fp);
2004 if (rc == 0)
2005 rc = mdc_ioc_hsm_ct_register(imp, archive);
2006 }
2007
2008 return rc;
2009}
2010
2011/**
2012 * Send a message to any listening copytools
2013 * @param val KUC message (kuc_hdr + hsm_action_list)
2014 * @param len total length of message
2015 */
2016static int mdc_hsm_copytool_send(int len, void *val)
2017{
2018 struct kuc_hdr *lh = (struct kuc_hdr *)val;
2019 struct hsm_action_list *hal = (struct hsm_action_list *)(lh + 1);
2020 int rc;
2021 ENTRY;
2022
2023 if (len < sizeof(*lh) + sizeof(*hal)) {
2024 CERROR("Short HSM message %d < %d\n", len,
2025 (int) (sizeof(*lh) + sizeof(*hal)));
2026 RETURN(-EPROTO);
2027 }
2028 if (lh->kuc_magic == __swab16(KUC_MAGIC)) {
2029 lustre_swab_kuch(lh);
2030 lustre_swab_hal(hal);
2031 } else if (lh->kuc_magic != KUC_MAGIC) {
2032 CERROR("Bad magic %x!=%x\n", lh->kuc_magic, KUC_MAGIC);
2033 RETURN(-EPROTO);
2034 }
2035
2036 CDEBUG(D_HSM, " Received message mg=%x t=%d m=%d l=%d actions=%d "
2037 "on %s\n",
2038 lh->kuc_magic, lh->kuc_transport, lh->kuc_msgtype,
2039 lh->kuc_msglen, hal->hal_count, hal->hal_fsname);
2040
2041 /* Broadcast to HSM listeners */
2042 rc = libcfs_kkuc_group_put(KUC_GRP_HSM, lh);
2043
2044 RETURN(rc);
2045}
2046
2047/**
2048 * callback function passed to kuc for re-registering each HSM copytool
2049 * running on MDC, after MDT shutdown/recovery.
2050 * @param data archive id served by the copytool
2051 * @param cb_arg callback argument (obd_import)
2052 */
2053static int mdc_hsm_ct_reregister(__u32 data, void *cb_arg)
2054{
2055 struct obd_import *imp = (struct obd_import *)cb_arg;
2056 __u32 archive = data;
2057 int rc;
2058
2059 CDEBUG(D_HA, "recover copytool registration to MDT (archive=%#x)\n",
2060 archive);
2061 rc = mdc_ioc_hsm_ct_register(imp, archive);
2062
2063 /* ignore error if the copytool is already registered */
2064 return ((rc != 0) && (rc != -EEXIST)) ? rc : 0;
2065}
2066
2067/**
2068 * Re-establish all kuc contexts with MDT
2069 * after MDT shutdown/recovery.
2070 */
2071static int mdc_kuc_reregister(struct obd_import *imp)
2072{
2073 /* re-register HSM agents */
2074 return libcfs_kkuc_group_foreach(KUC_GRP_HSM, mdc_hsm_ct_reregister,
2075 (void *)imp);
2076}
2077
2078int mdc_set_info_async(const struct lu_env *env,
2079 struct obd_export *exp,
2080 obd_count keylen, void *key,
2081 obd_count vallen, void *val,
2082 struct ptlrpc_request_set *set)
2083{
2084 struct obd_import *imp = class_exp2cliimp(exp);
2085 int rc;
2086 ENTRY;
2087
2088 if (KEY_IS(KEY_READ_ONLY)) {
2089 if (vallen != sizeof(int))
2090 RETURN(-EINVAL);
2091
2092 spin_lock(&imp->imp_lock);
2093 if (*((int *)val)) {
2094 imp->imp_connect_flags_orig |= OBD_CONNECT_RDONLY;
2095 imp->imp_connect_data.ocd_connect_flags |=
2096 OBD_CONNECT_RDONLY;
2097 } else {
2098 imp->imp_connect_flags_orig &= ~OBD_CONNECT_RDONLY;
2099 imp->imp_connect_data.ocd_connect_flags &=
2100 ~OBD_CONNECT_RDONLY;
2101 }
2102 spin_unlock(&imp->imp_lock);
2103
2104 rc = do_set_info_async(imp, MDS_SET_INFO, LUSTRE_MDS_VERSION,
2105 keylen, key, vallen, val, set);
2106 RETURN(rc);
2107 }
2108 if (KEY_IS(KEY_SPTLRPC_CONF)) {
2109 sptlrpc_conf_client_adapt(exp->exp_obd);
2110 RETURN(0);
2111 }
2112 if (KEY_IS(KEY_FLUSH_CTX)) {
2113 sptlrpc_import_flush_my_ctx(imp);
2114 RETURN(0);
2115 }
2116 if (KEY_IS(KEY_MDS_CONN)) {
2117 /* mds-mds import */
2118 spin_lock(&imp->imp_lock);
2119 imp->imp_server_timeout = 1;
2120 spin_unlock(&imp->imp_lock);
2121 imp->imp_client->cli_request_portal = MDS_MDS_PORTAL;
2122 CDEBUG(D_OTHER, "%s: timeout / 2\n", exp->exp_obd->obd_name);
2123 RETURN(0);
2124 }
2125 if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
2126 rc = do_set_info_async(imp, MDS_SET_INFO, LUSTRE_MDS_VERSION,
2127 keylen, key, vallen, val, set);
2128 RETURN(rc);
2129 }
2130 if (KEY_IS(KEY_HSM_COPYTOOL_SEND)) {
2131 rc = mdc_hsm_copytool_send(vallen, val);
2132 RETURN(rc);
2133 }
2134
2135 CERROR("Unknown key %s\n", (char *)key);
2136 RETURN(-EINVAL);
2137}
2138
2139int mdc_get_info(const struct lu_env *env, struct obd_export *exp,
2140 __u32 keylen, void *key, __u32 *vallen, void *val,
2141 struct lov_stripe_md *lsm)
2142{
2143 int rc = -EINVAL;
2144
2145 if (KEY_IS(KEY_MAX_EASIZE)) {
2146 int mdsize, *max_easize;
2147
2148 if (*vallen != sizeof(int))
2149 RETURN(-EINVAL);
2150 mdsize = *(int*)val;
2151 if (mdsize > exp->exp_obd->u.cli.cl_max_mds_easize)
2152 exp->exp_obd->u.cli.cl_max_mds_easize = mdsize;
2153 max_easize = val;
2154 *max_easize = exp->exp_obd->u.cli.cl_max_mds_easize;
2155 RETURN(0);
2156 } else if (KEY_IS(KEY_CONN_DATA)) {
2157 struct obd_import *imp = class_exp2cliimp(exp);
2158 struct obd_connect_data *data = val;
2159
2160 if (*vallen != sizeof(*data))
2161 RETURN(-EINVAL);
2162
2163 *data = imp->imp_connect_data;
2164 RETURN(0);
2165 } else if (KEY_IS(KEY_TGT_COUNT)) {
2166 *((int *)val) = 1;
2167 RETURN(0);
2168 }
2169
2170 rc = mdc_get_info_rpc(exp, keylen, key, *vallen, val);
2171
2172 RETURN(rc);
2173}
2174
2175static int mdc_pin(struct obd_export *exp, const struct lu_fid *fid,
2176 struct obd_capa *oc, struct obd_client_handle *handle,
2177 int flags)
2178{
2179 struct ptlrpc_request *req;
2180 struct mdt_body *body;
2181 int rc;
2182 ENTRY;
2183
2184 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_PIN);
2185 if (req == NULL)
2186 RETURN(-ENOMEM);
2187
2188 mdc_set_capa_size(req, &RMF_CAPA1, oc);
2189
2190 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_PIN);
2191 if (rc) {
2192 ptlrpc_request_free(req);
2193 RETURN(rc);
2194 }
2195
2196 mdc_pack_body(req, fid, oc, 0, 0, -1, flags);
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 if (rc) {
2204 CERROR("Pin failed: %d\n", rc);
2205 GOTO(err_out, rc);
2206 }
2207
2208 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
2209 if (body == NULL)
2210 GOTO(err_out, rc = -EPROTO);
2211
2212 handle->och_fh = body->handle;
2213 handle->och_magic = OBD_CLIENT_HANDLE_MAGIC;
2214
2215 handle->och_mod = obd_mod_alloc();
2216 if (handle->och_mod == NULL) {
2217 DEBUG_REQ(D_ERROR, req, "can't allocate md_open_data");
2218 GOTO(err_out, rc = -ENOMEM);
2219 }
2220 handle->och_mod->mod_open_req = req; /* will be dropped by unpin */
2221
2222 RETURN(0);
2223
2224err_out:
2225 ptlrpc_req_finished(req);
2226 RETURN(rc);
2227}
2228
2229static int mdc_unpin(struct obd_export *exp, struct obd_client_handle *handle,
2230 int flag)
2231{
2232 struct ptlrpc_request *req;
2233 struct mdt_body *body;
2234 int rc;
2235 ENTRY;
2236
2237 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), &RQF_MDS_UNPIN,
2238 LUSTRE_MDS_VERSION, MDS_UNPIN);
2239 if (req == NULL)
2240 RETURN(-ENOMEM);
2241
2242 body = req_capsule_client_get(&req->rq_pill, &RMF_MDT_BODY);
2243 body->handle = handle->och_fh;
2244 body->flags = flag;
2245
2246 ptlrpc_request_set_replen(req);
2247
2248 mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
2249 rc = ptlrpc_queue_wait(req);
2250 mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
2251
2252 if (rc != 0)
2253 CERROR("Unpin failed: %d\n", rc);
2254
2255 ptlrpc_req_finished(req);
2256 ptlrpc_req_finished(handle->och_mod->mod_open_req);
2257
2258 obd_mod_put(handle->och_mod);
2259 RETURN(rc);
2260}
2261
2262int mdc_sync(struct obd_export *exp, const struct lu_fid *fid,
2263 struct obd_capa *oc, struct ptlrpc_request **request)
2264{
2265 struct ptlrpc_request *req;
2266 int rc;
2267 ENTRY;
2268
2269 *request = NULL;
2270 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_SYNC);
2271 if (req == NULL)
2272 RETURN(-ENOMEM);
2273
2274 mdc_set_capa_size(req, &RMF_CAPA1, oc);
2275
2276 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_SYNC);
2277 if (rc) {
2278 ptlrpc_request_free(req);
2279 RETURN(rc);
2280 }
2281
2282 mdc_pack_body(req, fid, oc, 0, 0, -1, 0);
2283
2284 ptlrpc_request_set_replen(req);
2285
2286 rc = ptlrpc_queue_wait(req);
2287 if (rc)
2288 ptlrpc_req_finished(req);
2289 else
2290 *request = req;
2291 RETURN(rc);
2292}
2293
2294static int mdc_import_event(struct obd_device *obd, struct obd_import *imp,
2295 enum obd_import_event event)
2296{
2297 int rc = 0;
2298
2299 LASSERT(imp->imp_obd == obd);
2300
2301 switch (event) {
2302 case IMP_EVENT_DISCON: {
2303#if 0
2304 /* XXX Pass event up to OBDs stack. used only for FLD now */
2305 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_DISCON, NULL);
2306#endif
2307 break;
2308 }
2309 case IMP_EVENT_INACTIVE: {
2310 struct client_obd *cli = &obd->u.cli;
2311 /*
2312 * Flush current sequence to make client obtain new one
2313 * from server in case of disconnect/reconnect.
2314 */
2315 if (cli->cl_seq != NULL)
2316 seq_client_flush(cli->cl_seq);
2317
2318 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_INACTIVE, NULL);
2319 break;
2320 }
2321 case IMP_EVENT_INVALIDATE: {
2322 struct ldlm_namespace *ns = obd->obd_namespace;
2323
2324 ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY);
2325
2326 break;
2327 }
2328 case IMP_EVENT_ACTIVE:
2329 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVE, NULL);
2330 /* restore re-establish kuc registration after reconnecting */
2331 if (rc == 0)
2332 rc = mdc_kuc_reregister(imp);
2333 break;
2334 case IMP_EVENT_OCD:
2335 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_OCD, NULL);
2336 break;
2337 case IMP_EVENT_DEACTIVATE:
2338 case IMP_EVENT_ACTIVATE:
2339 break;
2340 default:
2341 CERROR("Unknown import event %x\n", event);
2342 LBUG();
2343 }
2344 RETURN(rc);
2345}
2346
2347int mdc_fid_alloc(struct obd_export *exp, struct lu_fid *fid,
2348 struct md_op_data *op_data)
2349{
2350 struct client_obd *cli = &exp->exp_obd->u.cli;
2351 struct lu_client_seq *seq = cli->cl_seq;
2352 ENTRY;
2353 RETURN(seq_client_alloc_fid(NULL, seq, fid));
2354}
2355
2356struct obd_uuid *mdc_get_uuid(struct obd_export *exp) {
2357 struct client_obd *cli = &exp->exp_obd->u.cli;
2358 return &cli->cl_target_uuid;
2359}
2360
2361/**
2362 * Determine whether the lock can be canceled before replaying it during
2363 * recovery, non zero value will be return if the lock can be canceled,
2364 * or zero returned for not
2365 */
2366static int mdc_cancel_for_recovery(struct ldlm_lock *lock)
2367{
2368 if (lock->l_resource->lr_type != LDLM_IBITS)
2369 RETURN(0);
2370
2371 /* FIXME: if we ever get into a situation where there are too many
2372 * opened files with open locks on a single node, then we really
2373 * should replay these open locks to reget it */
2374 if (lock->l_policy_data.l_inodebits.bits & MDS_INODELOCK_OPEN)
2375 RETURN(0);
2376
2377 RETURN(1);
2378}
2379
2380static int mdc_resource_inode_free(struct ldlm_resource *res)
2381{
2382 if (res->lr_lvb_inode)
2383 res->lr_lvb_inode = NULL;
2384
2385 return 0;
2386}
2387
2388struct ldlm_valblock_ops inode_lvbo = {
2389 lvbo_free: mdc_resource_inode_free
2390};
2391
2392static int mdc_setup(struct obd_device *obd, struct lustre_cfg *cfg)
2393{
2394 struct client_obd *cli = &obd->u.cli;
2395 struct lprocfs_static_vars lvars = { 0 };
2396 int rc;
2397 ENTRY;
2398
2399 OBD_ALLOC(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
2400 if (!cli->cl_rpc_lock)
2401 RETURN(-ENOMEM);
2402 mdc_init_rpc_lock(cli->cl_rpc_lock);
2403
2404 ptlrpcd_addref();
2405
2406 OBD_ALLOC(cli->cl_close_lock, sizeof (*cli->cl_close_lock));
2407 if (!cli->cl_close_lock)
2408 GOTO(err_rpc_lock, rc = -ENOMEM);
2409 mdc_init_rpc_lock(cli->cl_close_lock);
2410
2411 rc = client_obd_setup(obd, cfg);
2412 if (rc)
2413 GOTO(err_close_lock, rc);
2414 lprocfs_mdc_init_vars(&lvars);
2415 lprocfs_obd_setup(obd, lvars.obd_vars);
2416 sptlrpc_lprocfs_cliobd_attach(obd);
2417 ptlrpc_lprocfs_register_obd(obd);
2418
2419 ns_register_cancel(obd->obd_namespace, mdc_cancel_for_recovery);
2420
2421 obd->obd_namespace->ns_lvbo = &inode_lvbo;
2422
2423 rc = obd_llog_init(obd, &obd->obd_olg, obd, NULL);
2424 if (rc) {
2425 mdc_cleanup(obd);
2426 CERROR("failed to setup llogging subsystems\n");
2427 }
2428
2429 RETURN(rc);
2430
2431err_close_lock:
2432 OBD_FREE(cli->cl_close_lock, sizeof (*cli->cl_close_lock));
2433err_rpc_lock:
2434 OBD_FREE(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
2435 ptlrpcd_decref();
2436 RETURN(rc);
2437}
2438
2439/* Initialize the default and maximum LOV EA and cookie sizes. This allows
2440 * us to make MDS RPCs with large enough reply buffers to hold the
2441 * maximum-sized (= maximum striped) EA and cookie without having to
2442 * calculate this (via a call into the LOV + OSCs) each time we make an RPC. */
2443static int mdc_init_ea_size(struct obd_export *exp, int easize,
2444 int def_easize, int cookiesize)
2445{
2446 struct obd_device *obd = exp->exp_obd;
2447 struct client_obd *cli = &obd->u.cli;
2448 ENTRY;
2449
2450 if (cli->cl_max_mds_easize < easize)
2451 cli->cl_max_mds_easize = easize;
2452
2453 if (cli->cl_default_mds_easize < def_easize)
2454 cli->cl_default_mds_easize = def_easize;
2455
2456 if (cli->cl_max_mds_cookiesize < cookiesize)
2457 cli->cl_max_mds_cookiesize = cookiesize;
2458
2459 RETURN(0);
2460}
2461
2462static int mdc_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
2463{
2464 int rc = 0;
2465 ENTRY;
2466
2467 switch (stage) {
2468 case OBD_CLEANUP_EARLY:
2469 break;
2470 case OBD_CLEANUP_EXPORTS:
2471 /* Failsafe, ok if racy */
2472 if (obd->obd_type->typ_refcnt <= 1)
2473 libcfs_kkuc_group_rem(0, KUC_GRP_HSM);
2474
2475 obd_cleanup_client_import(obd);
2476 ptlrpc_lprocfs_unregister_obd(obd);
2477 lprocfs_obd_cleanup(obd);
2478
2479 rc = obd_llog_finish(obd, 0);
2480 if (rc != 0)
2481 CERROR("failed to cleanup llogging subsystems\n");
2482 break;
2483 }
2484 RETURN(rc);
2485}
2486
2487static int mdc_cleanup(struct obd_device *obd)
2488{
2489 struct client_obd *cli = &obd->u.cli;
2490
2491 OBD_FREE(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
2492 OBD_FREE(cli->cl_close_lock, sizeof (*cli->cl_close_lock));
2493
2494 ptlrpcd_decref();
2495
2496 return client_obd_cleanup(obd);
2497}
2498
2499
2500static int mdc_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
2501 struct obd_device *tgt, int *index)
2502{
2503 struct llog_ctxt *ctxt;
2504 int rc;
2505
2506 ENTRY;
2507
2508 LASSERT(olg == &obd->obd_olg);
2509
2510 rc = llog_setup(NULL, obd, olg, LLOG_CHANGELOG_REPL_CTXT, tgt,
2511 &llog_client_ops);
2512 if (rc)
2513 RETURN(rc);
2514
2515 ctxt = llog_group_get_ctxt(olg, LLOG_CHANGELOG_REPL_CTXT);
2516 llog_initiator_connect(ctxt);
2517 llog_ctxt_put(ctxt);
2518
2519 RETURN(0);
2520}
2521
2522static int mdc_llog_finish(struct obd_device *obd, int count)
2523{
2524 struct llog_ctxt *ctxt;
2525
2526 ENTRY;
2527
2528 ctxt = llog_get_context(obd, LLOG_CHANGELOG_REPL_CTXT);
2529 if (ctxt)
2530 llog_cleanup(NULL, ctxt);
2531
2532 RETURN(0);
2533}
2534
2535static int mdc_process_config(struct obd_device *obd, obd_count len, void *buf)
2536{
2537 struct lustre_cfg *lcfg = buf;
2538 struct lprocfs_static_vars lvars = { 0 };
2539 int rc = 0;
2540
2541 lprocfs_mdc_init_vars(&lvars);
2542 switch (lcfg->lcfg_command) {
2543 default:
2544 rc = class_process_proc_param(PARAM_MDC, lvars.obd_vars,
2545 lcfg, obd);
2546 if (rc > 0)
2547 rc = 0;
2548 break;
2549 }
2550 return(rc);
2551}
2552
2553
2554/* get remote permission for current user on fid */
2555int mdc_get_remote_perm(struct obd_export *exp, const struct lu_fid *fid,
2556 struct obd_capa *oc, __u32 suppgid,
2557 struct ptlrpc_request **request)
2558{
2559 struct ptlrpc_request *req;
2560 int rc;
2561 ENTRY;
2562
2563 LASSERT(client_is_remote(exp));
2564
2565 *request = NULL;
2566 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_GETATTR);
2567 if (req == NULL)
2568 RETURN(-ENOMEM);
2569
2570 mdc_set_capa_size(req, &RMF_CAPA1, oc);
2571
2572 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR);
2573 if (rc) {
2574 ptlrpc_request_free(req);
2575 RETURN(rc);
2576 }
2577
2578 mdc_pack_body(req, fid, oc, OBD_MD_FLRMTPERM, 0, suppgid, 0);
2579
2580 req_capsule_set_size(&req->rq_pill, &RMF_ACL, RCL_SERVER,
2581 sizeof(struct mdt_remote_perm));
2582
2583 ptlrpc_request_set_replen(req);
2584
2585 rc = ptlrpc_queue_wait(req);
2586 if (rc)
2587 ptlrpc_req_finished(req);
2588 else
2589 *request = req;
2590 RETURN(rc);
2591}
2592
2593static int mdc_interpret_renew_capa(const struct lu_env *env,
2594 struct ptlrpc_request *req, void *args,
2595 int status)
2596{
2597 struct mdc_renew_capa_args *ra = args;
2598 struct mdt_body *body = NULL;
2599 struct lustre_capa *capa;
2600 ENTRY;
2601
2602 if (status)
2603 GOTO(out, capa = ERR_PTR(status));
2604
2605 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
2606 if (body == NULL)
2607 GOTO(out, capa = ERR_PTR(-EFAULT));
2608
2609 if ((body->valid & OBD_MD_FLOSSCAPA) == 0)
2610 GOTO(out, capa = ERR_PTR(-ENOENT));
2611
2612 capa = req_capsule_server_get(&req->rq_pill, &RMF_CAPA2);
2613 if (!capa)
2614 GOTO(out, capa = ERR_PTR(-EFAULT));
2615 EXIT;
2616out:
2617 ra->ra_cb(ra->ra_oc, capa);
2618 return 0;
2619}
2620
2621static int mdc_renew_capa(struct obd_export *exp, struct obd_capa *oc,
2622 renew_capa_cb_t cb)
2623{
2624 struct ptlrpc_request *req;
2625 struct mdc_renew_capa_args *ra;
2626 ENTRY;
2627
2628 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), &RQF_MDS_GETATTR,
2629 LUSTRE_MDS_VERSION, MDS_GETATTR);
2630 if (req == NULL)
2631 RETURN(-ENOMEM);
2632
2633 /* NB, OBD_MD_FLOSSCAPA is set here, but it doesn't necessarily mean the
2634 * capa to renew is oss capa.
2635 */
2636 mdc_pack_body(req, &oc->c_capa.lc_fid, oc, OBD_MD_FLOSSCAPA, 0, -1, 0);
2637 ptlrpc_request_set_replen(req);
2638
2639 CLASSERT(sizeof(*ra) <= sizeof(req->rq_async_args));
2640 ra = ptlrpc_req_async_args(req);
2641 ra->ra_oc = oc;
2642 ra->ra_cb = cb;
2643 req->rq_interpret_reply = mdc_interpret_renew_capa;
2644 ptlrpcd_add_req(req, PDL_POLICY_LOCAL, -1);
2645 RETURN(0);
2646}
2647
2648static int mdc_connect(const struct lu_env *env,
2649 struct obd_export **exp,
2650 struct obd_device *obd, struct obd_uuid *cluuid,
2651 struct obd_connect_data *data,
2652 void *localdata)
2653{
2654 struct obd_import *imp = obd->u.cli.cl_import;
2655
2656 /* mds-mds import features */
2657 if (data && (data->ocd_connect_flags & OBD_CONNECT_MDS_MDS)) {
2658 spin_lock(&imp->imp_lock);
2659 imp->imp_server_timeout = 1;
2660 spin_unlock(&imp->imp_lock);
2661 imp->imp_client->cli_request_portal = MDS_MDS_PORTAL;
2662 CDEBUG(D_OTHER, "%s: Set 'mds' portal and timeout\n",
2663 obd->obd_name);
2664 }
2665
2666 return client_connect_import(env, exp, obd, cluuid, data, NULL);
2667}
2668
2669struct obd_ops mdc_obd_ops = {
2670 .o_owner = THIS_MODULE,
2671 .o_setup = mdc_setup,
2672 .o_precleanup = mdc_precleanup,
2673 .o_cleanup = mdc_cleanup,
2674 .o_add_conn = client_import_add_conn,
2675 .o_del_conn = client_import_del_conn,
2676 .o_connect = mdc_connect,
2677 .o_disconnect = client_disconnect_export,
2678 .o_iocontrol = mdc_iocontrol,
2679 .o_set_info_async = mdc_set_info_async,
2680 .o_statfs = mdc_statfs,
2681 .o_pin = mdc_pin,
2682 .o_unpin = mdc_unpin,
2683 .o_fid_init = client_fid_init,
2684 .o_fid_fini = client_fid_fini,
2685 .o_fid_alloc = mdc_fid_alloc,
2686 .o_import_event = mdc_import_event,
2687 .o_llog_init = mdc_llog_init,
2688 .o_llog_finish = mdc_llog_finish,
2689 .o_get_info = mdc_get_info,
2690 .o_process_config = mdc_process_config,
2691 .o_get_uuid = mdc_get_uuid,
2692 .o_quotactl = mdc_quotactl,
2693 .o_quotacheck = mdc_quotacheck
2694};
2695
2696struct md_ops mdc_md_ops = {
2697 .m_getstatus = mdc_getstatus,
2698 .m_null_inode = mdc_null_inode,
2699 .m_find_cbdata = mdc_find_cbdata,
2700 .m_close = mdc_close,
2701 .m_create = mdc_create,
2702 .m_done_writing = mdc_done_writing,
2703 .m_enqueue = mdc_enqueue,
2704 .m_getattr = mdc_getattr,
2705 .m_getattr_name = mdc_getattr_name,
2706 .m_intent_lock = mdc_intent_lock,
2707 .m_link = mdc_link,
2708 .m_is_subdir = mdc_is_subdir,
2709 .m_rename = mdc_rename,
2710 .m_setattr = mdc_setattr,
2711 .m_setxattr = mdc_setxattr,
2712 .m_getxattr = mdc_getxattr,
2713 .m_sync = mdc_sync,
2714 .m_readpage = mdc_readpage,
2715 .m_unlink = mdc_unlink,
2716 .m_cancel_unused = mdc_cancel_unused,
2717 .m_init_ea_size = mdc_init_ea_size,
2718 .m_set_lock_data = mdc_set_lock_data,
2719 .m_lock_match = mdc_lock_match,
2720 .m_get_lustre_md = mdc_get_lustre_md,
2721 .m_free_lustre_md = mdc_free_lustre_md,
2722 .m_set_open_replay_data = mdc_set_open_replay_data,
2723 .m_clear_open_replay_data = mdc_clear_open_replay_data,
2724 .m_renew_capa = mdc_renew_capa,
2725 .m_unpack_capa = mdc_unpack_capa,
2726 .m_get_remote_perm = mdc_get_remote_perm,
2727 .m_intent_getattr_async = mdc_intent_getattr_async,
2728 .m_revalidate_lock = mdc_revalidate_lock
2729};
2730
2731int __init mdc_init(void)
2732{
2733 int rc;
2734 struct lprocfs_static_vars lvars = { 0 };
2735 lprocfs_mdc_init_vars(&lvars);
2736
2737 rc = class_register_type(&mdc_obd_ops, &mdc_md_ops, lvars.module_vars,
2738 LUSTRE_MDC_NAME, NULL);
2739 RETURN(rc);
2740}
2741
2742static void /*__exit*/ mdc_exit(void)
2743{
2744 class_unregister_type(LUSTRE_MDC_NAME);
2745}
2746
2747MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
2748MODULE_DESCRIPTION("Lustre Metadata Client");
2749MODULE_LICENSE("GPL");
2750
2751module_init(mdc_init);
2752module_exit(mdc_exit);
Linux kernel - Deliverables
This page took 0.127846 seconds and 5 git commands to generate.