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staging/lustre/ptlrpc: race in pinger (use-after-free situation)
[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;
4b1a25f0
PT		 380 rec->sx_fsuid = from_kuid(&init_user_ns, current_fsuid());
381 rec->sx_fsgid = from_kgid(&init_user_ns, current_fsgid());
d7e09d03
PT		 382 rec->sx_cap = cfs_curproc_cap_pack();
383 rec->sx_suppgid1 = suppgid;
384 rec->sx_suppgid2 = -1;
385 rec->sx_fid = *fid;
386 rec->sx_valid = valid | OBD_MD_FLCTIME;
387 rec->sx_time = cfs_time_current_sec();
388 rec->sx_size = output_size;
389 rec->sx_flags = flags;
390
391 mdc_pack_capa(req, &RMF_CAPA1, oc);
392 } else {
393 mdc_pack_body(req, fid, oc, valid, output_size, suppgid, flags);
394 }
395
396 if (xattr_name) {
397 tmp = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
398 memcpy(tmp, xattr_name, xattr_namelen);
399 }
400 if (input_size) {
401 tmp = req_capsule_client_get(&req->rq_pill, &RMF_EADATA);
402 memcpy(tmp, input, input_size);
403 }
404
405 if (req_capsule_has_field(&req->rq_pill, &RMF_EADATA, RCL_SERVER))
406 req_capsule_set_size(&req->rq_pill, &RMF_EADATA,
407 RCL_SERVER, output_size);
408 ptlrpc_request_set_replen(req);
409
410 /* make rpc */
411 if (opcode == MDS_REINT)
412 mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
413
414 rc = ptlrpc_queue_wait(req);
415
416 if (opcode == MDS_REINT)
417 mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
418
419 if (rc)
420 ptlrpc_req_finished(req);
421 else
422 *request = req;
423 RETURN(rc);
424}
425
426int mdc_setxattr(struct obd_export *exp, const struct lu_fid *fid,
427 struct obd_capa *oc, obd_valid valid, const char *xattr_name,
428 const char *input, int input_size, int output_size,
429 int flags, __u32 suppgid, struct ptlrpc_request **request)
430{
431 return mdc_xattr_common(exp, &RQF_MDS_REINT_SETXATTR,
432 fid, oc, MDS_REINT, valid, xattr_name,
433 input, input_size, output_size, flags,
434 suppgid, request);
435}
436
437int mdc_getxattr(struct obd_export *exp, const struct lu_fid *fid,
438 struct obd_capa *oc, obd_valid valid, const char *xattr_name,
439 const char *input, int input_size, int output_size,
440 int flags, struct ptlrpc_request **request)
441{
442 return mdc_xattr_common(exp, &RQF_MDS_GETXATTR,
443 fid, oc, MDS_GETXATTR, valid, xattr_name,
444 input, input_size, output_size, flags,
445 -1, request);
446}
447
448#ifdef CONFIG_FS_POSIX_ACL
449static int mdc_unpack_acl(struct ptlrpc_request *req, struct lustre_md *md)
450{
451 struct req_capsule *pill = &req->rq_pill;
452 struct mdt_body *body = md->body;
453 struct posix_acl *acl;
454 void *buf;
455 int rc;
456 ENTRY;
457
458 if (!body->aclsize)
459 RETURN(0);
460
461 buf = req_capsule_server_sized_get(pill, &RMF_ACL, body->aclsize);
462
463 if (!buf)
464 RETURN(-EPROTO);
465
466 acl = posix_acl_from_xattr(&init_user_ns, buf, body->aclsize);
467 if (IS_ERR(acl)) {
468 rc = PTR_ERR(acl);
469 CERROR("convert xattr to acl: %d\n", rc);
470 RETURN(rc);
471 }
472
473 rc = posix_acl_valid(acl);
474 if (rc) {
475 CERROR("validate acl: %d\n", rc);
476 posix_acl_release(acl);
477 RETURN(rc);
478 }
479
480 md->posix_acl = acl;
481 RETURN(0);
482}
483#else
484#define mdc_unpack_acl(req, md) 0
485#endif
486
487int mdc_get_lustre_md(struct obd_export *exp, struct ptlrpc_request *req,
488 struct obd_export *dt_exp, struct obd_export *md_exp,
489 struct lustre_md *md)
490{
491 struct req_capsule *pill = &req->rq_pill;
492 int rc;
493 ENTRY;
494
495 LASSERT(md);
496 memset(md, 0, sizeof(*md));
497
498 md->body = req_capsule_server_get(pill, &RMF_MDT_BODY);
499 LASSERT(md->body != NULL);
500
501 if (md->body->valid & OBD_MD_FLEASIZE) {
502 int lmmsize;
503 struct lov_mds_md *lmm;
504
505 if (!S_ISREG(md->body->mode)) {
506 CDEBUG(D_INFO, "OBD_MD_FLEASIZE set, should be a "
507 "regular file, but is not\n");
508 GOTO(out, rc = -EPROTO);
509 }
510
511 if (md->body->eadatasize == 0) {
512 CDEBUG(D_INFO, "OBD_MD_FLEASIZE set, "
513 "but eadatasize 0\n");
514 GOTO(out, rc = -EPROTO);
515 }
516 lmmsize = md->body->eadatasize;
517 lmm = req_capsule_server_sized_get(pill, &RMF_MDT_MD, lmmsize);
518 if (!lmm)
519 GOTO(out, rc = -EPROTO);
520
521 rc = obd_unpackmd(dt_exp, &md->lsm, lmm, lmmsize);
522 if (rc < 0)
523 GOTO(out, rc);
524
525 if (rc < sizeof(*md->lsm)) {
526 CDEBUG(D_INFO, "lsm size too small: "
527 "rc < sizeof (*md->lsm) (%d < %d)\n",
528 rc, (int)sizeof(*md->lsm));
529 GOTO(out, rc = -EPROTO);
530 }
531
532 } else if (md->body->valid & OBD_MD_FLDIREA) {
533 int lmvsize;
534 struct lov_mds_md *lmv;
535
536 if(!S_ISDIR(md->body->mode)) {
537 CDEBUG(D_INFO, "OBD_MD_FLDIREA set, should be a "
538 "directory, but is not\n");
539 GOTO(out, rc = -EPROTO);
540 }
541
542 if (md->body->eadatasize == 0) {
543 CDEBUG(D_INFO, "OBD_MD_FLDIREA is set, "
544 "but eadatasize 0\n");
545 RETURN(-EPROTO);
546 }
547 if (md->body->valid & OBD_MD_MEA) {
548 lmvsize = md->body->eadatasize;
549 lmv = req_capsule_server_sized_get(pill, &RMF_MDT_MD,
550 lmvsize);
551 if (!lmv)
552 GOTO(out, rc = -EPROTO);
553
554 rc = obd_unpackmd(md_exp, (void *)&md->mea, lmv,
555 lmvsize);
556 if (rc < 0)
557 GOTO(out, rc);
558
559 if (rc < sizeof(*md->mea)) {
560 CDEBUG(D_INFO, "size too small: "
561 "rc < sizeof(*md->mea) (%d < %d)\n",
562 rc, (int)sizeof(*md->mea));
563 GOTO(out, rc = -EPROTO);
564 }
565 }
566 }
567 rc = 0;
568
569 if (md->body->valid & OBD_MD_FLRMTPERM) {
570 /* remote permission */
571 LASSERT(client_is_remote(exp));
572 md->remote_perm = req_capsule_server_swab_get(pill, &RMF_ACL,
573 lustre_swab_mdt_remote_perm);
574 if (!md->remote_perm)
575 GOTO(out, rc = -EPROTO);
576 }
577 else if (md->body->valid & OBD_MD_FLACL) {
578 /* for ACL, it's possible that FLACL is set but aclsize is zero.
579 * only when aclsize != 0 there's an actual segment for ACL
580 * in reply buffer.
581 */
582 if (md->body->aclsize) {
583 rc = mdc_unpack_acl(req, md);
584 if (rc)
585 GOTO(out, rc);
586#ifdef CONFIG_FS_POSIX_ACL
587 } else {
588 md->posix_acl = NULL;
589#endif
590 }
591 }
592 if (md->body->valid & OBD_MD_FLMDSCAPA) {
593 struct obd_capa *oc = NULL;
594
595 rc = mdc_unpack_capa(NULL, req, &RMF_CAPA1, &oc);
596 if (rc)
597 GOTO(out, rc);
598 md->mds_capa = oc;
599 }
600
601 if (md->body->valid & OBD_MD_FLOSSCAPA) {
602 struct obd_capa *oc = NULL;
603
604 rc = mdc_unpack_capa(NULL, req, &RMF_CAPA2, &oc);
605 if (rc)
606 GOTO(out, rc);
607 md->oss_capa = oc;
608 }
609
610 EXIT;
611out:
612 if (rc) {
613 if (md->oss_capa) {
614 capa_put(md->oss_capa);
615 md->oss_capa = NULL;
616 }
617 if (md->mds_capa) {
618 capa_put(md->mds_capa);
619 md->mds_capa = NULL;
620 }
621#ifdef CONFIG_FS_POSIX_ACL
622 posix_acl_release(md->posix_acl);
623#endif
624 if (md->lsm)
625 obd_free_memmd(dt_exp, &md->lsm);
626 }
627 return rc;
628}
629
630int mdc_free_lustre_md(struct obd_export *exp, struct lustre_md *md)
631{
632 ENTRY;
633 RETURN(0);
634}
635
636/**
637 * Handles both OPEN and SETATTR RPCs for OPEN-CLOSE and SETATTR-DONE_WRITING
638 * RPC chains.
639 */
640void mdc_replay_open(struct ptlrpc_request *req)
641{
642 struct md_open_data *mod = req->rq_cb_data;
643 struct ptlrpc_request *close_req;
644 struct obd_client_handle *och;
645 struct lustre_handle old;
646 struct mdt_body *body;
647 ENTRY;
648
649 if (mod == NULL) {
650 DEBUG_REQ(D_ERROR, req,
651 "Can't properly replay without open data.");
652 EXIT;
653 return;
654 }
655
656 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
657 LASSERT(body != NULL);
658
659 och = mod->mod_och;
660 if (och != NULL) {
661 struct lustre_handle *file_fh;
662
663 LASSERT(och->och_magic == OBD_CLIENT_HANDLE_MAGIC);
664
665 file_fh = &och->och_fh;
666 CDEBUG(D_HA, "updating handle from "LPX64" to "LPX64"\n",
667 file_fh->cookie, body->handle.cookie);
668 old = *file_fh;
669 *file_fh = body->handle;
670 }
671 close_req = mod->mod_close_req;
672 if (close_req != NULL) {
673 __u32 opc = lustre_msg_get_opc(close_req->rq_reqmsg);
674 struct mdt_ioepoch *epoch;
675
676 LASSERT(opc == MDS_CLOSE || opc == MDS_DONE_WRITING);
677 epoch = req_capsule_client_get(&close_req->rq_pill,
678 &RMF_MDT_EPOCH);
679 LASSERT(epoch);
680
681 if (och != NULL)
682 LASSERT(!memcmp(&old, &epoch->handle, sizeof(old)));
683 DEBUG_REQ(D_HA, close_req, "updating close body with new fh");
684 epoch->handle = body->handle;
685 }
686 EXIT;
687}
688
689void mdc_commit_open(struct ptlrpc_request *req)
690{
691 struct md_open_data *mod = req->rq_cb_data;
692 if (mod == NULL)
693 return;
694
695 /**
696 * No need to touch md_open_data::mod_och, it holds a reference on
697 * \var mod and will zero references to each other, \var mod will be
698 * freed after that when md_open_data::mod_och will put the reference.
699 */
700
701 /**
702 * Do not let open request to disappear as it still may be needed
703 * for close rpc to happen (it may happen on evict only, otherwise
704 * ptlrpc_request::rq_replay does not let mdc_commit_open() to be
705 * called), just mark this rpc as committed to distinguish these 2
706 * cases, see mdc_close() for details. The open request reference will
707 * be put along with freeing \var mod.
708 */
709 ptlrpc_request_addref(req);
710 spin_lock(&req->rq_lock);
711 req->rq_committed = 1;
712 spin_unlock(&req->rq_lock);
713 req->rq_cb_data = NULL;
714 obd_mod_put(mod);
715}
716
717int mdc_set_open_replay_data(struct obd_export *exp,
718 struct obd_client_handle *och,
719 struct ptlrpc_request *open_req)
720{
721 struct md_open_data *mod;
722 struct mdt_rec_create *rec;
723 struct mdt_body *body;
724 struct obd_import *imp = open_req->rq_import;
725 ENTRY;
726
727 if (!open_req->rq_replay)
728 RETURN(0);
729
730 rec = req_capsule_client_get(&open_req->rq_pill, &RMF_REC_REINT);
731 body = req_capsule_server_get(&open_req->rq_pill, &RMF_MDT_BODY);
732 LASSERT(rec != NULL);
733 /* Incoming message in my byte order (it's been swabbed). */
734 /* Outgoing messages always in my byte order. */
735 LASSERT(body != NULL);
736
737 /* Only if the import is replayable, we set replay_open data */
738 if (och && imp->imp_replayable) {
739 mod = obd_mod_alloc();
740 if (mod == NULL) {
741 DEBUG_REQ(D_ERROR, open_req,
742 "Can't allocate md_open_data");
743 RETURN(0);
744 }
745
746 /**
747 * Take a reference on \var mod, to be freed on mdc_close().
748 * It protects \var mod from being freed on eviction (commit
749 * callback is called despite rq_replay flag).
750 * Another reference for \var och.
751 */
752 obd_mod_get(mod);
753 obd_mod_get(mod);
754
755 spin_lock(&open_req->rq_lock);
756 och->och_mod = mod;
757 mod->mod_och = och;
758 mod->mod_open_req = open_req;
759 open_req->rq_cb_data = mod;
760 open_req->rq_commit_cb = mdc_commit_open;
761 spin_unlock(&open_req->rq_lock);
762 }
763
764 rec->cr_fid2 = body->fid1;
765 rec->cr_ioepoch = body->ioepoch;
766 rec->cr_old_handle.cookie = body->handle.cookie;
767 open_req->rq_replay_cb = mdc_replay_open;
768 if (!fid_is_sane(&body->fid1)) {
769 DEBUG_REQ(D_ERROR, open_req, "Saving replay request with "
770 "insane fid");
771 LBUG();
772 }
773
774 DEBUG_REQ(D_RPCTRACE, open_req, "Set up open replay data");
775 RETURN(0);
776}
777
778int mdc_clear_open_replay_data(struct obd_export *exp,
779 struct obd_client_handle *och)
780{
781 struct md_open_data *mod = och->och_mod;
782 ENTRY;
783
784 /**
785 * It is possible to not have \var mod in a case of eviction between
786 * lookup and ll_file_open().
787 **/
788 if (mod == NULL)
789 RETURN(0);
790
791 LASSERT(mod != LP_POISON);
792
793 mod->mod_och = NULL;
794 och->och_mod = NULL;
795 obd_mod_put(mod);
796
797 RETURN(0);
798}
799
800/* Prepares the request for the replay by the given reply */
801static void mdc_close_handle_reply(struct ptlrpc_request *req,
802 struct md_op_data *op_data, int rc) {
803 struct mdt_body *repbody;
804 struct mdt_ioepoch *epoch;
805
806 if (req && rc == -EAGAIN) {
807 repbody = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
808 epoch = req_capsule_client_get(&req->rq_pill, &RMF_MDT_EPOCH);
809
810 epoch->flags |= MF_SOM_AU;
811 if (repbody->valid & OBD_MD_FLGETATTRLOCK)
812 op_data->op_flags |= MF_GETATTR_LOCK;
813 }
814}
815
816int mdc_close(struct obd_export *exp, struct md_op_data *op_data,
817 struct md_open_data *mod, struct ptlrpc_request **request)
818{
819 struct obd_device *obd = class_exp2obd(exp);
820 struct ptlrpc_request *req;
821 int rc;
822 ENTRY;
823
824 *request = NULL;
825 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_CLOSE);
826 if (req == NULL)
827 RETURN(-ENOMEM);
828
829 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
830
831 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_CLOSE);
832 if (rc) {
833 ptlrpc_request_free(req);
834 RETURN(rc);
835 }
836
837 /* To avoid a livelock (bug 7034), we need to send CLOSE RPCs to a
838 * portal whose threads are not taking any DLM locks and are therefore
839 * always progressing */
840 req->rq_request_portal = MDS_READPAGE_PORTAL;
841 ptlrpc_at_set_req_timeout(req);
842
843 /* Ensure that this close's handle is fixed up during replay. */
844 if (likely(mod != NULL)) {
845 LASSERTF(mod->mod_open_req != NULL &&
846 mod->mod_open_req->rq_type != LI_POISON,
847 "POISONED open %p!\n", mod->mod_open_req);
848
849 mod->mod_close_req = req;
850
851 DEBUG_REQ(D_HA, mod->mod_open_req, "matched open");
852 /* We no longer want to preserve this open for replay even
853 * though the open was committed. b=3632, b=3633 */
854 spin_lock(&mod->mod_open_req->rq_lock);
855 mod->mod_open_req->rq_replay = 0;
856 spin_unlock(&mod->mod_open_req->rq_lock);
857 } else {
858 CDEBUG(D_HA, "couldn't find open req; expecting close error\n");
859 }
860
861 mdc_close_pack(req, op_data);
862
863 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
864 obd->u.cli.cl_max_mds_easize);
865 req_capsule_set_size(&req->rq_pill, &RMF_LOGCOOKIES, RCL_SERVER,
866 obd->u.cli.cl_max_mds_cookiesize);
867
868 ptlrpc_request_set_replen(req);
869
870 mdc_get_rpc_lock(obd->u.cli.cl_close_lock, NULL);
871 rc = ptlrpc_queue_wait(req);
872 mdc_put_rpc_lock(obd->u.cli.cl_close_lock, NULL);
873
874 if (req->rq_repmsg == NULL) {
875 CDEBUG(D_RPCTRACE, "request failed to send: %p, %d\n", req,
876 req->rq_status);
877 if (rc == 0)
878 rc = req->rq_status ?: -EIO;
879 } else if (rc == 0 || rc == -EAGAIN) {
880 struct mdt_body *body;
881
882 rc = lustre_msg_get_status(req->rq_repmsg);
883 if (lustre_msg_get_type(req->rq_repmsg) == PTL_RPC_MSG_ERR) {
884 DEBUG_REQ(D_ERROR, req, "type == PTL_RPC_MSG_ERR, err "
885 "= %d", rc);
886 if (rc > 0)
887 rc = -rc;
888 }
889 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
890 if (body == NULL)
891 rc = -EPROTO;
892 } else if (rc == -ESTALE) {
893 /**
894 * it can be allowed error after 3633 if open was committed and
895 * server failed before close was sent. Let's check if mod
896 * exists and return no error in that case
897 */
898 if (mod) {
899 DEBUG_REQ(D_HA, req, "Reset ESTALE = %d", rc);
900 LASSERT(mod->mod_open_req != NULL);
901 if (mod->mod_open_req->rq_committed)
902 rc = 0;
903 }
904 }
905
906 if (mod) {
907 if (rc != 0)
908 mod->mod_close_req = NULL;
909 /* Since now, mod is accessed through open_req only,
910 * thus close req does not keep a reference on mod anymore. */
911 obd_mod_put(mod);
912 }
913 *request = req;
914 mdc_close_handle_reply(req, op_data, rc);
915 RETURN(rc);
916}
917
918int mdc_done_writing(struct obd_export *exp, struct md_op_data *op_data,
919 struct md_open_data *mod)
920{
921 struct obd_device *obd = class_exp2obd(exp);
922 struct ptlrpc_request *req;
923 int rc;
924 ENTRY;
925
926 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
927 &RQF_MDS_DONE_WRITING);
928 if (req == NULL)
929 RETURN(-ENOMEM);
930
931 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
932 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_DONE_WRITING);
933 if (rc) {
934 ptlrpc_request_free(req);
935 RETURN(rc);
936 }
937
938 if (mod != NULL) {
939 LASSERTF(mod->mod_open_req != NULL &&
940 mod->mod_open_req->rq_type != LI_POISON,
941 "POISONED setattr %p!\n", mod->mod_open_req);
942
943 mod->mod_close_req = req;
944 DEBUG_REQ(D_HA, mod->mod_open_req, "matched setattr");
945 /* We no longer want to preserve this setattr for replay even
946 * though the open was committed. b=3632, b=3633 */
947 spin_lock(&mod->mod_open_req->rq_lock);
948 mod->mod_open_req->rq_replay = 0;
949 spin_unlock(&mod->mod_open_req->rq_lock);
950 }
951
952 mdc_close_pack(req, op_data);
953 ptlrpc_request_set_replen(req);
954
955 mdc_get_rpc_lock(obd->u.cli.cl_close_lock, NULL);
956 rc = ptlrpc_queue_wait(req);
957 mdc_put_rpc_lock(obd->u.cli.cl_close_lock, NULL);
958
959 if (rc == -ESTALE) {
960 /**
961 * it can be allowed error after 3633 if open or setattr were
962 * committed and server failed before close was sent.
963 * Let's check if mod exists and return no error in that case
964 */
965 if (mod) {
966 LASSERT(mod->mod_open_req != NULL);
967 if (mod->mod_open_req->rq_committed)
968 rc = 0;
969 }
970 }
971
972 if (mod) {
973 if (rc != 0)
974 mod->mod_close_req = NULL;
975 /* Since now, mod is accessed through setattr req only,
976 * thus DW req does not keep a reference on mod anymore. */
977 obd_mod_put(mod);
978 }
979
980 mdc_close_handle_reply(req, op_data, rc);
981 ptlrpc_req_finished(req);
982 RETURN(rc);
983}
984
985
986int mdc_readpage(struct obd_export *exp, struct md_op_data *op_data,
987 struct page **pages, struct ptlrpc_request **request)
988{
989 struct ptlrpc_request *req;
990 struct ptlrpc_bulk_desc *desc;
991 int i;
992 wait_queue_head_t waitq;
993 int resends = 0;
994 struct l_wait_info lwi;
995 int rc;
996 ENTRY;
997
998 *request = NULL;
999 init_waitqueue_head(&waitq);
1000
1001restart_bulk:
1002 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_READPAGE);
1003 if (req == NULL)
1004 RETURN(-ENOMEM);
1005
1006 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
1007
1008 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_READPAGE);
1009 if (rc) {
1010 ptlrpc_request_free(req);
1011 RETURN(rc);
1012 }
1013
1014 req->rq_request_portal = MDS_READPAGE_PORTAL;
1015 ptlrpc_at_set_req_timeout(req);
1016
1017 desc = ptlrpc_prep_bulk_imp(req, op_data->op_npages, 1, BULK_PUT_SINK,
1018 MDS_BULK_PORTAL);
1019 if (desc == NULL) {
1020 ptlrpc_request_free(req);
1021 RETURN(-ENOMEM);
1022 }
1023
1024 /* NB req now owns desc and will free it when it gets freed */
1025 for (i = 0; i < op_data->op_npages; i++)
1026 ptlrpc_prep_bulk_page_pin(desc, pages[i], 0, PAGE_CACHE_SIZE);
1027
1028 mdc_readdir_pack(req, op_data->op_offset,
1029 PAGE_CACHE_SIZE * op_data->op_npages,
1030 &op_data->op_fid1, op_data->op_capa1);
1031
1032 ptlrpc_request_set_replen(req);
1033 rc = ptlrpc_queue_wait(req);
1034 if (rc) {
1035 ptlrpc_req_finished(req);
1036 if (rc != -ETIMEDOUT)
1037 RETURN(rc);
1038
1039 resends++;
1040 if (!client_should_resend(resends, &exp->exp_obd->u.cli)) {
1041 CERROR("too many resend retries, returning error\n");
1042 RETURN(-EIO);
1043 }
1044 lwi = LWI_TIMEOUT_INTR(cfs_time_seconds(resends), NULL, NULL, NULL);
1045 l_wait_event(waitq, 0, &lwi);
1046
1047 goto restart_bulk;
1048 }
1049
1050 rc = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk,
1051 req->rq_bulk->bd_nob_transferred);
1052 if (rc < 0) {
1053 ptlrpc_req_finished(req);
1054 RETURN(rc);
1055 }
1056
1057 if (req->rq_bulk->bd_nob_transferred & ~LU_PAGE_MASK) {
1058 CERROR("Unexpected # bytes transferred: %d (%ld expected)\n",
1059 req->rq_bulk->bd_nob_transferred,
1060 PAGE_CACHE_SIZE * op_data->op_npages);
1061 ptlrpc_req_finished(req);
1062 RETURN(-EPROTO);
1063 }
1064
1065 *request = req;
1066 RETURN(0);
1067}
1068
1069static int mdc_statfs(const struct lu_env *env,
1070 struct obd_export *exp, struct obd_statfs *osfs,
1071 __u64 max_age, __u32 flags)
1072{
1073 struct obd_device *obd = class_exp2obd(exp);
1074 struct ptlrpc_request *req;
1075 struct obd_statfs *msfs;
1076 struct obd_import *imp = NULL;
1077 int rc;
1078 ENTRY;
1079
1080 /*
1081 * Since the request might also come from lprocfs, so we need
1082 * sync this with client_disconnect_export Bug15684
1083 */
1084 down_read(&obd->u.cli.cl_sem);
1085 if (obd->u.cli.cl_import)
1086 imp = class_import_get(obd->u.cli.cl_import);
1087 up_read(&obd->u.cli.cl_sem);
1088 if (!imp)
1089 RETURN(-ENODEV);
1090
1091 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_STATFS,
1092 LUSTRE_MDS_VERSION, MDS_STATFS);
1093 if (req == NULL)
1094 GOTO(output, rc = -ENOMEM);
1095
1096 ptlrpc_request_set_replen(req);
1097
1098 if (flags & OBD_STATFS_NODELAY) {
1099 /* procfs requests not want stay in wait for avoid deadlock */
1100 req->rq_no_resend = 1;
1101 req->rq_no_delay = 1;
1102 }
1103
1104 rc = ptlrpc_queue_wait(req);
1105 if (rc) {
1106 /* check connection error first */
1107 if (imp->imp_connect_error)
1108 rc = imp->imp_connect_error;
1109 GOTO(out, rc);
1110 }
1111
1112 msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
1113 if (msfs == NULL)
1114 GOTO(out, rc = -EPROTO);
1115
1116 *osfs = *msfs;
1117 EXIT;
1118out:
1119 ptlrpc_req_finished(req);
1120output:
1121 class_import_put(imp);
1122 return rc;
1123}
1124
1125static int mdc_ioc_fid2path(struct obd_export *exp, struct getinfo_fid2path *gf)
1126{
1127 __u32 keylen, vallen;
1128 void *key;
1129 int rc;
1130
1131 if (gf->gf_pathlen > PATH_MAX)
1132 RETURN(-ENAMETOOLONG);
1133 if (gf->gf_pathlen < 2)
1134 RETURN(-EOVERFLOW);
1135
1136 /* Key is KEY_FID2PATH + getinfo_fid2path description */
1137 keylen = cfs_size_round(sizeof(KEY_FID2PATH)) + sizeof(*gf);
1138 OBD_ALLOC(key, keylen);
1139 if (key == NULL)
1140 RETURN(-ENOMEM);
1141 memcpy(key, KEY_FID2PATH, sizeof(KEY_FID2PATH));
1142 memcpy(key + cfs_size_round(sizeof(KEY_FID2PATH)), gf, sizeof(*gf));
1143
1144 CDEBUG(D_IOCTL, "path get "DFID" from "LPU64" #%d\n",
1145 PFID(&gf->gf_fid), gf->gf_recno, gf->gf_linkno);
1146
1147 if (!fid_is_sane(&gf->gf_fid))
1148 GOTO(out, rc = -EINVAL);
1149
1150 /* Val is struct getinfo_fid2path result plus path */
1151 vallen = sizeof(*gf) + gf->gf_pathlen;
1152
1153 rc = obd_get_info(NULL, exp, keylen, key, &vallen, gf, NULL);
1154 if (rc != 0 && rc != -EREMOTE)
1155 GOTO(out, rc);
1156
1157 if (vallen <= sizeof(*gf))
1158 GOTO(out, rc = -EPROTO);
1159 else if (vallen > sizeof(*gf) + gf->gf_pathlen)
1160 GOTO(out, rc = -EOVERFLOW);
1161
1162 CDEBUG(D_IOCTL, "path get "DFID" from "LPU64" #%d\n%s\n",
1163 PFID(&gf->gf_fid), gf->gf_recno, gf->gf_linkno, gf->gf_path);
1164
1165out:
1166 OBD_FREE(key, keylen);
1167 return rc;
1168}
1169
1170static int mdc_ioc_hsm_progress(struct obd_export *exp,
1171 struct hsm_progress_kernel *hpk)
1172{
1173 struct obd_import *imp = class_exp2cliimp(exp);
1174 struct hsm_progress_kernel *req_hpk;
1175 struct ptlrpc_request *req;
1176 int rc;
1177 ENTRY;
1178
1179 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_PROGRESS,
1180 LUSTRE_MDS_VERSION, MDS_HSM_PROGRESS);
1181 if (req == NULL)
1182 GOTO(out, rc = -ENOMEM);
1183
1184 mdc_pack_body(req, NULL, NULL, OBD_MD_FLRMTPERM, 0, 0, 0);
1185
1186 /* Copy hsm_progress struct */
1187 req_hpk = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_PROGRESS);
1188 if (req_hpk == NULL)
1189 GOTO(out, rc = -EPROTO);
1190
1191 *req_hpk = *hpk;
1192
1193 ptlrpc_request_set_replen(req);
1194
1195 rc = mdc_queue_wait(req);
1196 GOTO(out, rc);
1197out:
1198 ptlrpc_req_finished(req);
1199 return rc;
1200}
1201
1202static int mdc_ioc_hsm_ct_register(struct obd_import *imp, __u32 archives)
1203{
1204 __u32 *archive_mask;
1205 struct ptlrpc_request *req;
1206 int rc;
1207 ENTRY;
1208
1209 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_CT_REGISTER,
1210 LUSTRE_MDS_VERSION,
1211 MDS_HSM_CT_REGISTER);
1212 if (req == NULL)
1213 GOTO(out, rc = -ENOMEM);
1214
1215 mdc_pack_body(req, NULL, NULL, OBD_MD_FLRMTPERM, 0, 0, 0);
1216
1217 /* Copy hsm_progress struct */
1218 archive_mask = req_capsule_client_get(&req->rq_pill,
1219 &RMF_MDS_HSM_ARCHIVE);
1220 if (archive_mask == NULL)
1221 GOTO(out, rc = -EPROTO);
1222
1223 *archive_mask = archives;
1224
1225 ptlrpc_request_set_replen(req);
1226
1227 rc = mdc_queue_wait(req);
1228 GOTO(out, rc);
1229out:
1230 ptlrpc_req_finished(req);
1231 return rc;
1232}
1233
1234static int mdc_ioc_hsm_current_action(struct obd_export *exp,
1235 struct md_op_data *op_data)
1236{
1237 struct hsm_current_action *hca = op_data->op_data;
1238 struct hsm_current_action *req_hca;
1239 struct ptlrpc_request *req;
1240 int rc;
1241 ENTRY;
1242
1243 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1244 &RQF_MDS_HSM_ACTION);
1245 if (req == NULL)
1246 RETURN(-ENOMEM);
1247
1248 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
1249
1250 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_ACTION);
1251 if (rc) {
1252 ptlrpc_request_free(req);
1253 RETURN(rc);
1254 }
1255
1256 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1,
1257 OBD_MD_FLRMTPERM, 0, op_data->op_suppgids[0], 0);
1258
1259 ptlrpc_request_set_replen(req);
1260
1261 rc = mdc_queue_wait(req);
1262 if (rc)
1263 GOTO(out, rc);
1264
1265 req_hca = req_capsule_server_get(&req->rq_pill,
1266 &RMF_MDS_HSM_CURRENT_ACTION);
1267 if (req_hca == NULL)
1268 GOTO(out, rc = -EPROTO);
1269
1270 *hca = *req_hca;
1271
1272 EXIT;
1273out:
1274 ptlrpc_req_finished(req);
1275 return rc;
1276}
1277
1278static int mdc_ioc_hsm_ct_unregister(struct obd_import *imp)
1279{
1280 struct ptlrpc_request *req;
1281 int rc;
1282 ENTRY;
1283
1284 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_CT_UNREGISTER,
1285 LUSTRE_MDS_VERSION,
1286 MDS_HSM_CT_UNREGISTER);
1287 if (req == NULL)
1288 GOTO(out, rc = -ENOMEM);
1289
1290 mdc_pack_body(req, NULL, NULL, OBD_MD_FLRMTPERM, 0, 0, 0);
1291
1292 ptlrpc_request_set_replen(req);
1293
1294 rc = mdc_queue_wait(req);
1295 GOTO(out, rc);
1296out:
1297 ptlrpc_req_finished(req);
1298 return rc;
1299}
1300
1301static int mdc_ioc_hsm_state_get(struct obd_export *exp,
1302 struct md_op_data *op_data)
1303{
1304 struct hsm_user_state *hus = op_data->op_data;
1305 struct hsm_user_state *req_hus;
1306 struct ptlrpc_request *req;
1307 int rc;
1308 ENTRY;
1309
1310 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1311 &RQF_MDS_HSM_STATE_GET);
1312 if (req == NULL)
1313 RETURN(-ENOMEM);
1314
1315 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
1316
1317 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_STATE_GET);
1318 if (rc != 0) {
1319 ptlrpc_request_free(req);
1320 RETURN(rc);
1321 }
1322
1323 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1,
1324 OBD_MD_FLRMTPERM, 0, op_data->op_suppgids[0], 0);
1325
1326 ptlrpc_request_set_replen(req);
1327
1328 rc = mdc_queue_wait(req);
1329 if (rc)
1330 GOTO(out, rc);
1331
1332 req_hus = req_capsule_server_get(&req->rq_pill, &RMF_HSM_USER_STATE);
1333 if (req_hus == NULL)
1334 GOTO(out, rc = -EPROTO);
1335
1336 *hus = *req_hus;
1337
1338 EXIT;
1339out:
1340 ptlrpc_req_finished(req);
1341 return rc;
1342}
1343
1344static int mdc_ioc_hsm_state_set(struct obd_export *exp,
1345 struct md_op_data *op_data)
1346{
1347 struct hsm_state_set *hss = op_data->op_data;
1348 struct hsm_state_set *req_hss;
1349 struct ptlrpc_request *req;
1350 int rc;
1351 ENTRY;
1352
1353 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1354 &RQF_MDS_HSM_STATE_SET);
1355 if (req == NULL)
1356 RETURN(-ENOMEM);
1357
1358 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
1359
1360 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_STATE_SET);
1361 if (rc) {
1362 ptlrpc_request_free(req);
1363 RETURN(rc);
1364 }
1365
1366 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1,
1367 OBD_MD_FLRMTPERM, 0, op_data->op_suppgids[0], 0);
1368
1369 /* Copy states */
1370 req_hss = req_capsule_client_get(&req->rq_pill, &RMF_HSM_STATE_SET);
1371 if (req_hss == NULL)
1372 GOTO(out, rc = -EPROTO);
1373 *req_hss = *hss;
1374
1375 ptlrpc_request_set_replen(req);
1376
1377 rc = mdc_queue_wait(req);
1378 GOTO(out, rc);
1379
1380 EXIT;
1381out:
1382 ptlrpc_req_finished(req);
1383 return rc;
1384}
1385
1386static int mdc_ioc_hsm_request(struct obd_export *exp,
1387 struct hsm_user_request *hur)
1388{
1389 struct obd_import *imp = class_exp2cliimp(exp);
1390 struct ptlrpc_request *req;
1391 struct hsm_request *req_hr;
1392 struct hsm_user_item *req_hui;
1393 char *req_opaque;
1394 int rc;
1395 ENTRY;
1396
1397 req = ptlrpc_request_alloc(imp, &RQF_MDS_HSM_REQUEST);
1398 if (req == NULL)
1399 GOTO(out, rc = -ENOMEM);
1400
1401 req_capsule_set_size(&req->rq_pill, &RMF_MDS_HSM_USER_ITEM, RCL_CLIENT,
1402 hur->hur_request.hr_itemcount
1403 * sizeof(struct hsm_user_item));
1404 req_capsule_set_size(&req->rq_pill, &RMF_GENERIC_DATA, RCL_CLIENT,
1405 hur->hur_request.hr_data_len);
1406
1407 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_REQUEST);
1408 if (rc) {
1409 ptlrpc_request_free(req);
1410 RETURN(rc);
1411 }
1412
1413 mdc_pack_body(req, NULL, NULL, OBD_MD_FLRMTPERM, 0, 0, 0);
1414
1415 /* Copy hsm_request struct */
1416 req_hr = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_REQUEST);
1417 if (req_hr == NULL)
1418 GOTO(out, rc = -EPROTO);
1419 *req_hr = hur->hur_request;
1420
1421 /* Copy hsm_user_item structs */
1422 req_hui = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_USER_ITEM);
1423 if (req_hui == NULL)
1424 GOTO(out, rc = -EPROTO);
1425 memcpy(req_hui, hur->hur_user_item,
1426 hur->hur_request.hr_itemcount * sizeof(struct hsm_user_item));
1427
1428 /* Copy opaque field */
1429 req_opaque = req_capsule_client_get(&req->rq_pill, &RMF_GENERIC_DATA);
1430 if (req_opaque == NULL)
1431 GOTO(out, rc = -EPROTO);
1432 memcpy(req_opaque, hur_data(hur), hur->hur_request.hr_data_len);
1433
1434 ptlrpc_request_set_replen(req);
1435
1436 rc = mdc_queue_wait(req);
1437 GOTO(out, rc);
1438
1439out:
1440 ptlrpc_req_finished(req);
1441 return rc;
1442}
1443
1444static struct kuc_hdr *changelog_kuc_hdr(char *buf, int len, int flags)
1445{
1446 struct kuc_hdr *lh = (struct kuc_hdr *)buf;
1447
1448 LASSERT(len <= CR_MAXSIZE);
1449
1450 lh->kuc_magic = KUC_MAGIC;
1451 lh->kuc_transport = KUC_TRANSPORT_CHANGELOG;
1452 lh->kuc_flags = flags;
1453 lh->kuc_msgtype = CL_RECORD;
1454 lh->kuc_msglen = len;
1455 return lh;
1456}
1457
1458#define D_CHANGELOG 0
1459
1460struct changelog_show {
1461 __u64 cs_startrec;
1462 __u32 cs_flags;
1463 struct file *cs_fp;
1464 char *cs_buf;
1465 struct obd_device *cs_obd;
1466};
1467
e377988e 1468static int changelog_kkuc_cb(const struct lu_env *env, struct llog_handle *llh,
d7e09d03
PT		 1469 struct llog_rec_hdr *hdr, void *data)
1470{
1471 struct changelog_show *cs = data;
1472 struct llog_changelog_rec *rec = (struct llog_changelog_rec *)hdr;
1473 struct kuc_hdr *lh;
1474 int len, rc;
1475 ENTRY;
1476
e377988e
AD		 1477 if (rec->cr_hdr.lrh_type != CHANGELOG_REC) {
1478 rc = -EINVAL;
1479 CERROR("%s: not a changelog rec %x/%d: rc = %d\n",
1480 cs->cs_obd->obd_name, rec->cr_hdr.lrh_type,
1481 rec->cr.cr_type, rc);
1482 RETURN(rc);
d7e09d03
PT		 1483 }
1484
1485 if (rec->cr.cr_index < cs->cs_startrec) {
1486 /* Skip entries earlier than what we are interested in */
1487 CDEBUG(D_CHANGELOG, "rec="LPU64" start="LPU64"\n",
1488 rec->cr.cr_index, cs->cs_startrec);
1489 RETURN(0);
1490 }
1491
1492 CDEBUG(D_CHANGELOG, LPU64" %02d%-5s "LPU64" 0x%x t="DFID" p="DFID
1493 " %.*s\n", rec->cr.cr_index, rec->cr.cr_type,
1494 changelog_type2str(rec->cr.cr_type), rec->cr.cr_time,
1495 rec->cr.cr_flags & CLF_FLAGMASK,
1496 PFID(&rec->cr.cr_tfid), PFID(&rec->cr.cr_pfid),
1497 rec->cr.cr_namelen, changelog_rec_name(&rec->cr));
1498
1499 len = sizeof(*lh) + changelog_rec_size(&rec->cr) + rec->cr.cr_namelen;
1500
1501 /* Set up the message */
1502 lh = changelog_kuc_hdr(cs->cs_buf, len, cs->cs_flags);
1503 memcpy(lh + 1, &rec->cr, len - sizeof(*lh));
1504
1505 rc = libcfs_kkuc_msg_put(cs->cs_fp, lh);
1506 CDEBUG(D_CHANGELOG, "kucmsg fp %p len %d rc %d\n", cs->cs_fp, len,rc);
1507
1508 RETURN(rc);
1509}
1510
1511static int mdc_changelog_send_thread(void *csdata)
1512{
1513 struct changelog_show *cs = csdata;
1514 struct llog_ctxt *ctxt = NULL;
1515 struct llog_handle *llh = NULL;
1516 struct kuc_hdr *kuch;
1517 int rc;
1518
1519 CDEBUG(D_CHANGELOG, "changelog to fp=%p start "LPU64"\n",
1520 cs->cs_fp, cs->cs_startrec);
1521
1522 OBD_ALLOC(cs->cs_buf, CR_MAXSIZE);
1523 if (cs->cs_buf == NULL)
1524 GOTO(out, rc = -ENOMEM);
1525
1526 /* Set up the remote catalog handle */
1527 ctxt = llog_get_context(cs->cs_obd, LLOG_CHANGELOG_REPL_CTXT);
1528 if (ctxt == NULL)
1529 GOTO(out, rc = -ENOENT);
1530 rc = llog_open(NULL, ctxt, &llh, NULL, CHANGELOG_CATALOG,
1531 LLOG_OPEN_EXISTS);
1532 if (rc) {
1533 CERROR("%s: fail to open changelog catalog: rc = %d\n",
1534 cs->cs_obd->obd_name, rc);
1535 GOTO(out, rc);
1536 }
1537 rc = llog_init_handle(NULL, llh, LLOG_F_IS_CAT, NULL);
1538 if (rc) {
1539 CERROR("llog_init_handle failed %d\n", rc);
1540 GOTO(out, rc);
1541 }
1542
e377988e 1543 rc = llog_cat_process(NULL, llh, changelog_kkuc_cb, cs, 0, 0);
d7e09d03
PT		 1544
1545 /* Send EOF no matter what our result */
1546 if ((kuch = changelog_kuc_hdr(cs->cs_buf, sizeof(*kuch),
1547 cs->cs_flags))) {
1548 kuch->kuc_msgtype = CL_EOF;
1549 libcfs_kkuc_msg_put(cs->cs_fp, kuch);
1550 }
1551
1552out:
1553 fput(cs->cs_fp);
1554 if (llh)
1555 llog_cat_close(NULL, llh);
1556 if (ctxt)
1557 llog_ctxt_put(ctxt);
1558 if (cs->cs_buf)
1559 OBD_FREE(cs->cs_buf, CR_MAXSIZE);
1560 OBD_FREE_PTR(cs);
1561 return rc;
1562}
1563
1564static int mdc_ioc_changelog_send(struct obd_device *obd,
1565 struct ioc_changelog *icc)
1566{
1567 struct changelog_show *cs;
1568 int rc;
1569
1570 /* Freed in mdc_changelog_send_thread */
1571 OBD_ALLOC_PTR(cs);
1572 if (!cs)
1573 return -ENOMEM;
1574
1575 cs->cs_obd = obd;
1576 cs->cs_startrec = icc->icc_recno;
1577 /* matching fput in mdc_changelog_send_thread */
1578 cs->cs_fp = fget(icc->icc_id);
1579 cs->cs_flags = icc->icc_flags;
1580
1581 /*
1582 * New thread because we should return to user app before
1583 * writing into our pipe
1584 */
1585 rc = PTR_ERR(kthread_run(mdc_changelog_send_thread, cs,
1586 "mdc_clg_send_thread"));
1587 if (!IS_ERR_VALUE(rc)) {
1588 CDEBUG(D_CHANGELOG, "start changelog thread\n");
1589 return 0;
1590 }
1591
1592 CERROR("Failed to start changelog thread: %d\n", rc);
1593 OBD_FREE_PTR(cs);
1594 return rc;
1595}
1596
1597static int mdc_ioc_hsm_ct_start(struct obd_export *exp,
1598 struct lustre_kernelcomm *lk);
1599
1600static int mdc_quotacheck(struct obd_device *unused, struct obd_export *exp,
1601 struct obd_quotactl *oqctl)
1602{
1603 struct client_obd *cli = &exp->exp_obd->u.cli;
1604 struct ptlrpc_request *req;
1605 struct obd_quotactl *body;
1606 int rc;
1607 ENTRY;
1608
1609 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
1610 &RQF_MDS_QUOTACHECK, LUSTRE_MDS_VERSION,
1611 MDS_QUOTACHECK);
1612 if (req == NULL)
1613 RETURN(-ENOMEM);
1614
1615 body = req_capsule_client_get(&req->rq_pill, &RMF_OBD_QUOTACTL);
1616 *body = *oqctl;
1617
1618 ptlrpc_request_set_replen(req);
1619
1620 /* the next poll will find -ENODATA, that means quotacheck is
1621 * going on */
1622 cli->cl_qchk_stat = -ENODATA;
1623 rc = ptlrpc_queue_wait(req);
1624 if (rc)
1625 cli->cl_qchk_stat = rc;
1626 ptlrpc_req_finished(req);
1627 RETURN(rc);
1628}
1629
1630static int mdc_quota_poll_check(struct obd_export *exp,
1631 struct if_quotacheck *qchk)
1632{
1633 struct client_obd *cli = &exp->exp_obd->u.cli;
1634 int rc;
1635 ENTRY;
1636
1637 qchk->obd_uuid = cli->cl_target_uuid;
1638 memcpy(qchk->obd_type, LUSTRE_MDS_NAME, strlen(LUSTRE_MDS_NAME));
1639
1640 rc = cli->cl_qchk_stat;
1641 /* the client is not the previous one */
1642 if (rc == CL_NOT_QUOTACHECKED)
1643 rc = -EINTR;
1644 RETURN(rc);
1645}
1646
1647static int mdc_quotactl(struct obd_device *unused, struct obd_export *exp,
1648 struct obd_quotactl *oqctl)
1649{
1650 struct ptlrpc_request *req;
1651 struct obd_quotactl *oqc;
1652 int rc;
1653 ENTRY;
1654
1655 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
1656 &RQF_MDS_QUOTACTL, LUSTRE_MDS_VERSION,
1657 MDS_QUOTACTL);
1658 if (req == NULL)
1659 RETURN(-ENOMEM);
1660
1661 oqc = req_capsule_client_get(&req->rq_pill, &RMF_OBD_QUOTACTL);
1662 *oqc = *oqctl;
1663
1664 ptlrpc_request_set_replen(req);
1665 ptlrpc_at_set_req_timeout(req);
1666 req->rq_no_resend = 1;
1667
1668 rc = ptlrpc_queue_wait(req);
1669 if (rc)
1670 CERROR("ptlrpc_queue_wait failed, rc: %d\n", rc);
1671
1672 if (req->rq_repmsg &&
1673 (oqc = req_capsule_server_get(&req->rq_pill, &RMF_OBD_QUOTACTL))) {
1674 *oqctl = *oqc;
1675 } else if (!rc) {
1676 CERROR ("Can't unpack obd_quotactl\n");
1677 rc = -EPROTO;
1678 }
1679 ptlrpc_req_finished(req);
1680
1681 RETURN(rc);
1682}
1683
1684static int mdc_ioc_swap_layouts(struct obd_export *exp,
1685 struct md_op_data *op_data)
1686{
1687 LIST_HEAD(cancels);
1688 struct ptlrpc_request *req;
1689 int rc, count;
1690 struct mdc_swap_layouts *msl, *payload;
1691 ENTRY;
1692
1693 msl = op_data->op_data;
1694
1695 /* When the MDT will get the MDS_SWAP_LAYOUTS RPC the
1696 * first thing it will do is to cancel the 2 layout
1697 * locks hold by this client.
1698 * So the client must cancel its layout locks on the 2 fids
1699 * with the request RPC to avoid extra RPC round trips
1700 */
1701 count = mdc_resource_get_unused(exp, &op_data->op_fid1, &cancels,
1702 LCK_CR, MDS_INODELOCK_LAYOUT);
1703 count += mdc_resource_get_unused(exp, &op_data->op_fid2, &cancels,
1704 LCK_CR, MDS_INODELOCK_LAYOUT);
1705
1706 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1707 &RQF_MDS_SWAP_LAYOUTS);
1708 if (req == NULL) {
1709 ldlm_lock_list_put(&cancels, l_bl_ast, count);
1710 RETURN(-ENOMEM);
1711 }
1712
1713 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
1714 mdc_set_capa_size(req, &RMF_CAPA2, op_data->op_capa2);
1715
1716 rc = mdc_prep_elc_req(exp, req, MDS_SWAP_LAYOUTS, &cancels, count);
1717 if (rc) {
1718 ptlrpc_request_free(req);
1719 RETURN(rc);
1720 }
1721
1722 mdc_swap_layouts_pack(req, op_data);
1723
1724 payload = req_capsule_client_get(&req->rq_pill, &RMF_SWAP_LAYOUTS);
1725 LASSERT(payload);
1726
1727 *payload = *msl;
1728
1729 ptlrpc_request_set_replen(req);
1730
1731 rc = ptlrpc_queue_wait(req);
1732 if (rc)
1733 GOTO(out, rc);
1734 EXIT;
1735
1736out:
1737 ptlrpc_req_finished(req);
1738 return rc;
1739}
1740
1741static int mdc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
1742 void *karg, void *uarg)
1743{
1744 struct obd_device *obd = exp->exp_obd;
1745 struct obd_ioctl_data *data = karg;
1746 struct obd_import *imp = obd->u.cli.cl_import;
1747 struct llog_ctxt *ctxt;
1748 int rc;
1749 ENTRY;
1750
1751 if (!try_module_get(THIS_MODULE)) {
1752 CERROR("Can't get module. Is it alive?");
1753 return -EINVAL;
1754 }
1755 switch (cmd) {
1756 case OBD_IOC_CHANGELOG_SEND:
1757 rc = mdc_ioc_changelog_send(obd, karg);
1758 GOTO(out, rc);
1759 case OBD_IOC_CHANGELOG_CLEAR: {
1760 struct ioc_changelog *icc = karg;
1761 struct changelog_setinfo cs =
1762 {.cs_recno = icc->icc_recno, .cs_id = icc->icc_id};
1763 rc = obd_set_info_async(NULL, exp, strlen(KEY_CHANGELOG_CLEAR),
1764 KEY_CHANGELOG_CLEAR, sizeof(cs), &cs,
1765 NULL);
1766 GOTO(out, rc);
1767 }
1768 case OBD_IOC_FID2PATH:
1769 rc = mdc_ioc_fid2path(exp, karg);
1770 GOTO(out, rc);
1771 case LL_IOC_HSM_CT_START:
1772 rc = mdc_ioc_hsm_ct_start(exp, karg);
1773 GOTO(out, rc);
1774 case LL_IOC_HSM_PROGRESS:
1775 rc = mdc_ioc_hsm_progress(exp, karg);
1776 GOTO(out, rc);
1777 case LL_IOC_HSM_STATE_GET:
1778 rc = mdc_ioc_hsm_state_get(exp, karg);
1779 GOTO(out, rc);
1780 case LL_IOC_HSM_STATE_SET:
1781 rc = mdc_ioc_hsm_state_set(exp, karg);
1782 case LL_IOC_HSM_ACTION:
1783 rc = mdc_ioc_hsm_current_action(exp, karg);
1784 GOTO(out, rc);
1785 case LL_IOC_HSM_REQUEST:
1786 rc = mdc_ioc_hsm_request(exp, karg);
1787 GOTO(out, rc);
1788 case OBD_IOC_CLIENT_RECOVER:
1789 rc = ptlrpc_recover_import(imp, data->ioc_inlbuf1, 0);
1790 if (rc < 0)
1791 GOTO(out, rc);
1792 GOTO(out, rc = 0);
1793 case IOC_OSC_SET_ACTIVE:
1794 rc = ptlrpc_set_import_active(imp, data->ioc_offset);
1795 GOTO(out, rc);
1796 case OBD_IOC_PARSE: {
1797 ctxt = llog_get_context(exp->exp_obd, LLOG_CONFIG_REPL_CTXT);
1798 rc = class_config_parse_llog(NULL, ctxt, data->ioc_inlbuf1,
1799 NULL);
1800 llog_ctxt_put(ctxt);
1801 GOTO(out, rc);
1802 }
1803 case OBD_IOC_LLOG_INFO:
1804 case OBD_IOC_LLOG_PRINT: {
1805 ctxt = llog_get_context(obd, LLOG_CONFIG_REPL_CTXT);
1806 rc = llog_ioctl(NULL, ctxt, cmd, data);
1807 llog_ctxt_put(ctxt);
1808 GOTO(out, rc);
1809 }
1810 case OBD_IOC_POLL_QUOTACHECK:
1811 rc = mdc_quota_poll_check(exp, (struct if_quotacheck *)karg);
1812 GOTO(out, rc);
1813 case OBD_IOC_PING_TARGET:
1814 rc = ptlrpc_obd_ping(obd);
1815 GOTO(out, rc);
1816 /*
1817 * Normally IOC_OBD_STATFS, OBD_IOC_QUOTACTL iocontrol are handled by
1818 * LMV instead of MDC. But when the cluster is upgraded from 1.8,
1819 * there'd be no LMV layer thus we might be called here. Eventually
1820 * this code should be removed.
1821 * bz20731, LU-592.
1822 */
1823 case IOC_OBD_STATFS: {
1824 struct obd_statfs stat_buf = {0};
1825
1826 if (*((__u32 *) data->ioc_inlbuf2) != 0)
1827 GOTO(out, rc = -ENODEV);
1828
1829 /* copy UUID */
1830 if (copy_to_user(data->ioc_pbuf2, obd2cli_tgt(obd),
1831 min((int) data->ioc_plen2,
1832 (int) sizeof(struct obd_uuid))))
1833 GOTO(out, rc = -EFAULT);
1834
1835 rc = mdc_statfs(NULL, obd->obd_self_export, &stat_buf,
1836 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
1837 0);
1838 if (rc != 0)
1839 GOTO(out, rc);
1840
1841 if (copy_to_user(data->ioc_pbuf1, &stat_buf,
1842 min((int) data->ioc_plen1,
1843 (int) sizeof(stat_buf))))
1844 GOTO(out, rc = -EFAULT);
1845
1846 GOTO(out, rc = 0);
1847 }
1848 case OBD_IOC_QUOTACTL: {
1849 struct if_quotactl *qctl = karg;
1850 struct obd_quotactl *oqctl;
1851
1852 OBD_ALLOC_PTR(oqctl);
1853 if (!oqctl)
1854 RETURN(-ENOMEM);
1855
1856 QCTL_COPY(oqctl, qctl);
1857 rc = obd_quotactl(exp, oqctl);
1858 if (rc == 0) {
1859 QCTL_COPY(qctl, oqctl);
1860 qctl->qc_valid = QC_MDTIDX;
1861 qctl->obd_uuid = obd->u.cli.cl_target_uuid;
1862 }
1863 OBD_FREE_PTR(oqctl);
1864 break;
1865 }
1866 case LL_IOC_GET_CONNECT_FLAGS: {
1867 if (copy_to_user(uarg,
1868 exp_connect_flags_ptr(exp),
1869 sizeof(__u64)))
1870 GOTO(out, rc = -EFAULT);
1871 else
1872 GOTO(out, rc = 0);
1873 }
1874 case LL_IOC_LOV_SWAP_LAYOUTS: {
1875 rc = mdc_ioc_swap_layouts(exp, karg);
1876 break;
1877 }
1878 default:
1879 CERROR("mdc_ioctl(): unrecognised ioctl %#x\n", cmd);
1880 GOTO(out, rc = -ENOTTY);
1881 }
1882out:
1883 module_put(THIS_MODULE);
1884
1885 return rc;
1886}
1887
1888int mdc_get_info_rpc(struct obd_export *exp,
1889 obd_count keylen, void *key,
1890 int vallen, void *val)
1891{
1892 struct obd_import *imp = class_exp2cliimp(exp);
1893 struct ptlrpc_request *req;
1894 char *tmp;
1895 int rc = -EINVAL;
1896 ENTRY;
1897
1898 req = ptlrpc_request_alloc(imp, &RQF_MDS_GET_INFO);
1899 if (req == NULL)
1900 RETURN(-ENOMEM);
1901
1902 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_KEY,
1903 RCL_CLIENT, keylen);
1904 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_VALLEN,
1905 RCL_CLIENT, sizeof(__u32));
1906
1907 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GET_INFO);
1908 if (rc) {
1909 ptlrpc_request_free(req);
1910 RETURN(rc);
1911 }
1912
1913 tmp = req_capsule_client_get(&req->rq_pill, &RMF_GETINFO_KEY);
1914 memcpy(tmp, key, keylen);
1915 tmp = req_capsule_client_get(&req->rq_pill, &RMF_GETINFO_VALLEN);
1916 memcpy(tmp, &vallen, sizeof(__u32));
1917
1918 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_VAL,
1919 RCL_SERVER, vallen);
1920 ptlrpc_request_set_replen(req);
1921
1922 rc = ptlrpc_queue_wait(req);
1923 /* -EREMOTE means the get_info result is partial, and it needs to
1924 * continue on another MDT, see fid2path part in lmv_iocontrol */
1925 if (rc == 0 || rc == -EREMOTE) {
1926 tmp = req_capsule_server_get(&req->rq_pill, &RMF_GETINFO_VAL);
1927 memcpy(val, tmp, vallen);
1928 if (ptlrpc_rep_need_swab(req)) {
1929 if (KEY_IS(KEY_FID2PATH))
1930 lustre_swab_fid2path(val);
1931 }
1932 }
1933 ptlrpc_req_finished(req);
1934
1935 RETURN(rc);
1936}
1937
1938static void lustre_swab_hai(struct hsm_action_item *h)
1939{
1940 __swab32s(&h->hai_len);
1941 __swab32s(&h->hai_action);
1942 lustre_swab_lu_fid(&h->hai_fid);
1943 lustre_swab_lu_fid(&h->hai_dfid);
1944 __swab64s(&h->hai_cookie);
1945 __swab64s(&h->hai_extent.offset);
1946 __swab64s(&h->hai_extent.length);
1947 __swab64s(&h->hai_gid);
1948}
1949
1950static void lustre_swab_hal(struct hsm_action_list *h)
1951{
1952 struct hsm_action_item *hai;
1953 int i;
1954
1955 __swab32s(&h->hal_version);
1956 __swab32s(&h->hal_count);
1957 __swab32s(&h->hal_archive_id);
1958 __swab64s(&h->hal_flags);
1959 hai = hai_zero(h);
1960 for (i = 0; i < h->hal_count; i++) {
1961 lustre_swab_hai(hai);
1962 hai = hai_next(hai);
1963 }
1964}
1965
1966static void lustre_swab_kuch(struct kuc_hdr *l)
1967{
1968 __swab16s(&l->kuc_magic);
1969 /* __u8 l->kuc_transport */
1970 __swab16s(&l->kuc_msgtype);
1971 __swab16s(&l->kuc_msglen);
1972}
1973
1974static int mdc_ioc_hsm_ct_start(struct obd_export *exp,
1975 struct lustre_kernelcomm *lk)
1976{
1977 struct obd_import *imp = class_exp2cliimp(exp);
1978 __u32 archive = lk->lk_data;
1979 int rc = 0;
1980
1981 if (lk->lk_group != KUC_GRP_HSM) {
1982 CERROR("Bad copytool group %d\n", lk->lk_group);
1983 return -EINVAL;
1984 }
1985
1986 CDEBUG(D_HSM, "CT start r%d w%d u%d g%d f%#x\n", lk->lk_rfd, lk->lk_wfd,
1987 lk->lk_uid, lk->lk_group, lk->lk_flags);
1988
1989 if (lk->lk_flags & LK_FLG_STOP) {
1990 rc = libcfs_kkuc_group_rem(lk->lk_uid, lk->lk_group);
1991 /* Unregister with the coordinator */
1992 if (rc == 0)
1993 rc = mdc_ioc_hsm_ct_unregister(imp);
1994 } else {
1995 struct file *fp = fget(lk->lk_wfd);
1996
1997 rc = libcfs_kkuc_group_add(fp, lk->lk_uid, lk->lk_group,
1998 lk->lk_data);
1999 if (rc && fp)
2000 fput(fp);
2001 if (rc == 0)
2002 rc = mdc_ioc_hsm_ct_register(imp, archive);
2003 }
2004
2005 return rc;
2006}
2007
2008/**
2009 * Send a message to any listening copytools
2010 * @param val KUC message (kuc_hdr + hsm_action_list)
2011 * @param len total length of message
2012 */
2013static int mdc_hsm_copytool_send(int len, void *val)
2014{
2015 struct kuc_hdr *lh = (struct kuc_hdr *)val;
2016 struct hsm_action_list *hal = (struct hsm_action_list *)(lh + 1);
2017 int rc;
2018 ENTRY;
2019
2020 if (len < sizeof(*lh) + sizeof(*hal)) {
2021 CERROR("Short HSM message %d < %d\n", len,
2022 (int) (sizeof(*lh) + sizeof(*hal)));
2023 RETURN(-EPROTO);
2024 }
2025 if (lh->kuc_magic == __swab16(KUC_MAGIC)) {
2026 lustre_swab_kuch(lh);
2027 lustre_swab_hal(hal);
2028 } else if (lh->kuc_magic != KUC_MAGIC) {
2029 CERROR("Bad magic %x!=%x\n", lh->kuc_magic, KUC_MAGIC);
2030 RETURN(-EPROTO);
2031 }
2032
2033 CDEBUG(D_HSM, " Received message mg=%x t=%d m=%d l=%d actions=%d "
2034 "on %s\n",
2035 lh->kuc_magic, lh->kuc_transport, lh->kuc_msgtype,
2036 lh->kuc_msglen, hal->hal_count, hal->hal_fsname);
2037
2038 /* Broadcast to HSM listeners */
2039 rc = libcfs_kkuc_group_put(KUC_GRP_HSM, lh);
2040
2041 RETURN(rc);
2042}
2043
2044/**
2045 * callback function passed to kuc for re-registering each HSM copytool
2046 * running on MDC, after MDT shutdown/recovery.
2047 * @param data archive id served by the copytool
2048 * @param cb_arg callback argument (obd_import)
2049 */
2050static int mdc_hsm_ct_reregister(__u32 data, void *cb_arg)
2051{
2052 struct obd_import *imp = (struct obd_import *)cb_arg;
2053 __u32 archive = data;
2054 int rc;
2055
2056 CDEBUG(D_HA, "recover copytool registration to MDT (archive=%#x)\n",
2057 archive);
2058 rc = mdc_ioc_hsm_ct_register(imp, archive);
2059
2060 /* ignore error if the copytool is already registered */
2061 return ((rc != 0) && (rc != -EEXIST)) ? rc : 0;
2062}
2063
2064/**
2065 * Re-establish all kuc contexts with MDT
2066 * after MDT shutdown/recovery.
2067 */
2068static int mdc_kuc_reregister(struct obd_import *imp)
2069{
2070 /* re-register HSM agents */
2071 return libcfs_kkuc_group_foreach(KUC_GRP_HSM, mdc_hsm_ct_reregister,
2072 (void *)imp);
2073}
2074
2075int mdc_set_info_async(const struct lu_env *env,
2076 struct obd_export *exp,
2077 obd_count keylen, void *key,
2078 obd_count vallen, void *val,
2079 struct ptlrpc_request_set *set)
2080{
2081 struct obd_import *imp = class_exp2cliimp(exp);
2082 int rc;
2083 ENTRY;
2084
2085 if (KEY_IS(KEY_READ_ONLY)) {
2086 if (vallen != sizeof(int))
2087 RETURN(-EINVAL);
2088
2089 spin_lock(&imp->imp_lock);
2090 if (*((int *)val)) {
2091 imp->imp_connect_flags_orig |= OBD_CONNECT_RDONLY;
2092 imp->imp_connect_data.ocd_connect_flags |=
2093 OBD_CONNECT_RDONLY;
2094 } else {
2095 imp->imp_connect_flags_orig &= ~OBD_CONNECT_RDONLY;
2096 imp->imp_connect_data.ocd_connect_flags &=
2097 ~OBD_CONNECT_RDONLY;
2098 }
2099 spin_unlock(&imp->imp_lock);
2100
2101 rc = do_set_info_async(imp, MDS_SET_INFO, LUSTRE_MDS_VERSION,
2102 keylen, key, vallen, val, set);
2103 RETURN(rc);
2104 }
2105 if (KEY_IS(KEY_SPTLRPC_CONF)) {
2106 sptlrpc_conf_client_adapt(exp->exp_obd);
2107 RETURN(0);
2108 }
2109 if (KEY_IS(KEY_FLUSH_CTX)) {
2110 sptlrpc_import_flush_my_ctx(imp);
2111 RETURN(0);
2112 }
2113 if (KEY_IS(KEY_MDS_CONN)) {
2114 /* mds-mds import */
2115 spin_lock(&imp->imp_lock);
2116 imp->imp_server_timeout = 1;
2117 spin_unlock(&imp->imp_lock);
2118 imp->imp_client->cli_request_portal = MDS_MDS_PORTAL;
2119 CDEBUG(D_OTHER, "%s: timeout / 2\n", exp->exp_obd->obd_name);
2120 RETURN(0);
2121 }
2122 if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
2123 rc = do_set_info_async(imp, MDS_SET_INFO, LUSTRE_MDS_VERSION,
2124 keylen, key, vallen, val, set);
2125 RETURN(rc);
2126 }
2127 if (KEY_IS(KEY_HSM_COPYTOOL_SEND)) {
2128 rc = mdc_hsm_copytool_send(vallen, val);
2129 RETURN(rc);
2130 }
2131
2132 CERROR("Unknown key %s\n", (char *)key);
2133 RETURN(-EINVAL);
2134}
2135
2136int mdc_get_info(const struct lu_env *env, struct obd_export *exp,
2137 __u32 keylen, void *key, __u32 *vallen, void *val,
2138 struct lov_stripe_md *lsm)
2139{
2140 int rc = -EINVAL;
2141
2142 if (KEY_IS(KEY_MAX_EASIZE)) {
2143 int mdsize, *max_easize;
2144
2145 if (*vallen != sizeof(int))
2146 RETURN(-EINVAL);
2147 mdsize = *(int*)val;
2148 if (mdsize > exp->exp_obd->u.cli.cl_max_mds_easize)
2149 exp->exp_obd->u.cli.cl_max_mds_easize = mdsize;
2150 max_easize = val;
2151 *max_easize = exp->exp_obd->u.cli.cl_max_mds_easize;
2152 RETURN(0);
2153 } else if (KEY_IS(KEY_CONN_DATA)) {
2154 struct obd_import *imp = class_exp2cliimp(exp);
2155 struct obd_connect_data *data = val;
2156
2157 if (*vallen != sizeof(*data))
2158 RETURN(-EINVAL);
2159
2160 *data = imp->imp_connect_data;
2161 RETURN(0);
2162 } else if (KEY_IS(KEY_TGT_COUNT)) {
2163 *((int *)val) = 1;
2164 RETURN(0);
2165 }
2166
2167 rc = mdc_get_info_rpc(exp, keylen, key, *vallen, val);
2168
2169 RETURN(rc);
2170}
2171
2172static int mdc_pin(struct obd_export *exp, const struct lu_fid *fid,
2173 struct obd_capa *oc, struct obd_client_handle *handle,
2174 int flags)
2175{
2176 struct ptlrpc_request *req;
2177 struct mdt_body *body;
2178 int rc;
2179 ENTRY;
2180
2181 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_PIN);
2182 if (req == NULL)
2183 RETURN(-ENOMEM);
2184
2185 mdc_set_capa_size(req, &RMF_CAPA1, oc);
2186
2187 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_PIN);
2188 if (rc) {
2189 ptlrpc_request_free(req);
2190 RETURN(rc);
2191 }
2192
2193 mdc_pack_body(req, fid, oc, 0, 0, -1, flags);
2194
2195 ptlrpc_request_set_replen(req);
2196
2197 mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
2198 rc = ptlrpc_queue_wait(req);
2199 mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
2200 if (rc) {
2201 CERROR("Pin failed: %d\n", rc);
2202 GOTO(err_out, rc);
2203 }
2204
2205 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
2206 if (body == NULL)
2207 GOTO(err_out, rc = -EPROTO);
2208
2209 handle->och_fh = body->handle;
2210 handle->och_magic = OBD_CLIENT_HANDLE_MAGIC;
2211
2212 handle->och_mod = obd_mod_alloc();
2213 if (handle->och_mod == NULL) {
2214 DEBUG_REQ(D_ERROR, req, "can't allocate md_open_data");
2215 GOTO(err_out, rc = -ENOMEM);
2216 }
2217 handle->och_mod->mod_open_req = req; /* will be dropped by unpin */
2218
2219 RETURN(0);
2220
2221err_out:
2222 ptlrpc_req_finished(req);
2223 RETURN(rc);
2224}
2225
2226static int mdc_unpin(struct obd_export *exp, struct obd_client_handle *handle,
2227 int flag)
2228{
2229 struct ptlrpc_request *req;
2230 struct mdt_body *body;
2231 int rc;
2232 ENTRY;
2233
2234 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), &RQF_MDS_UNPIN,
2235 LUSTRE_MDS_VERSION, MDS_UNPIN);
2236 if (req == NULL)
2237 RETURN(-ENOMEM);
2238
2239 body = req_capsule_client_get(&req->rq_pill, &RMF_MDT_BODY);
2240 body->handle = handle->och_fh;
2241 body->flags = flag;
2242
2243 ptlrpc_request_set_replen(req);
2244
2245 mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
2246 rc = ptlrpc_queue_wait(req);
2247 mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
2248
2249 if (rc != 0)
2250 CERROR("Unpin failed: %d\n", rc);
2251
2252 ptlrpc_req_finished(req);
2253 ptlrpc_req_finished(handle->och_mod->mod_open_req);
2254
2255 obd_mod_put(handle->och_mod);
2256 RETURN(rc);
2257}
2258
2259int mdc_sync(struct obd_export *exp, const struct lu_fid *fid,
2260 struct obd_capa *oc, struct ptlrpc_request **request)
2261{
2262 struct ptlrpc_request *req;
2263 int rc;
2264 ENTRY;
2265
2266 *request = NULL;
2267 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_SYNC);
2268 if (req == NULL)
2269 RETURN(-ENOMEM);
2270
2271 mdc_set_capa_size(req, &RMF_CAPA1, oc);
2272
2273 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_SYNC);
2274 if (rc) {
2275 ptlrpc_request_free(req);
2276 RETURN(rc);
2277 }
2278
2279 mdc_pack_body(req, fid, oc, 0, 0, -1, 0);
2280
2281 ptlrpc_request_set_replen(req);
2282
2283 rc = ptlrpc_queue_wait(req);
2284 if (rc)
2285 ptlrpc_req_finished(req);
2286 else
2287 *request = req;
2288 RETURN(rc);
2289}
2290
2291static int mdc_import_event(struct obd_device *obd, struct obd_import *imp,
2292 enum obd_import_event event)
2293{
2294 int rc = 0;
2295
2296 LASSERT(imp->imp_obd == obd);
2297
2298 switch (event) {
2299 case IMP_EVENT_DISCON: {
2300#if 0
2301 /* XXX Pass event up to OBDs stack. used only for FLD now */
2302 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_DISCON, NULL);
2303#endif
2304 break;
2305 }
2306 case IMP_EVENT_INACTIVE: {
2307 struct client_obd *cli = &obd->u.cli;
2308 /*
2309 * Flush current sequence to make client obtain new one
2310 * from server in case of disconnect/reconnect.
2311 */
2312 if (cli->cl_seq != NULL)
2313 seq_client_flush(cli->cl_seq);
2314
2315 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_INACTIVE, NULL);
2316 break;
2317 }
2318 case IMP_EVENT_INVALIDATE: {
2319 struct ldlm_namespace *ns = obd->obd_namespace;
2320
2321 ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY);
2322
2323 break;
2324 }
2325 case IMP_EVENT_ACTIVE:
2326 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVE, NULL);
2327 /* restore re-establish kuc registration after reconnecting */
2328 if (rc == 0)
2329 rc = mdc_kuc_reregister(imp);
2330 break;
2331 case IMP_EVENT_OCD:
2332 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_OCD, NULL);
2333 break;
2334 case IMP_EVENT_DEACTIVATE:
2335 case IMP_EVENT_ACTIVATE:
2336 break;
2337 default:
2338 CERROR("Unknown import event %x\n", event);
2339 LBUG();
2340 }
2341 RETURN(rc);
2342}
2343
2344int mdc_fid_alloc(struct obd_export *exp, struct lu_fid *fid,
2345 struct md_op_data *op_data)
2346{
2347 struct client_obd *cli = &exp->exp_obd->u.cli;
2348 struct lu_client_seq *seq = cli->cl_seq;
2349 ENTRY;
2350 RETURN(seq_client_alloc_fid(NULL, seq, fid));
2351}
2352
2353struct obd_uuid *mdc_get_uuid(struct obd_export *exp) {
2354 struct client_obd *cli = &exp->exp_obd->u.cli;
2355 return &cli->cl_target_uuid;
2356}
2357
2358/**
2359 * Determine whether the lock can be canceled before replaying it during
2360 * recovery, non zero value will be return if the lock can be canceled,
2361 * or zero returned for not
2362 */
2363static int mdc_cancel_for_recovery(struct ldlm_lock *lock)
2364{
2365 if (lock->l_resource->lr_type != LDLM_IBITS)
2366 RETURN(0);
2367
2368 /* FIXME: if we ever get into a situation where there are too many
2369 * opened files with open locks on a single node, then we really
2370 * should replay these open locks to reget it */
2371 if (lock->l_policy_data.l_inodebits.bits & MDS_INODELOCK_OPEN)
2372 RETURN(0);
2373
2374 RETURN(1);
2375}
2376
2377static int mdc_resource_inode_free(struct ldlm_resource *res)
2378{
2379 if (res->lr_lvb_inode)
2380 res->lr_lvb_inode = NULL;
2381
2382 return 0;
2383}
2384
2385struct ldlm_valblock_ops inode_lvbo = {
2386 lvbo_free: mdc_resource_inode_free
2387};
2388
2389static int mdc_setup(struct obd_device *obd, struct lustre_cfg *cfg)
2390{
2391 struct client_obd *cli = &obd->u.cli;
2392 struct lprocfs_static_vars lvars = { 0 };
2393 int rc;
2394 ENTRY;
2395
2396 OBD_ALLOC(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
2397 if (!cli->cl_rpc_lock)
2398 RETURN(-ENOMEM);
2399 mdc_init_rpc_lock(cli->cl_rpc_lock);
2400
2401 ptlrpcd_addref();
2402
2403 OBD_ALLOC(cli->cl_close_lock, sizeof (*cli->cl_close_lock));
2404 if (!cli->cl_close_lock)
2405 GOTO(err_rpc_lock, rc = -ENOMEM);
2406 mdc_init_rpc_lock(cli->cl_close_lock);
2407
2408 rc = client_obd_setup(obd, cfg);
2409 if (rc)
2410 GOTO(err_close_lock, rc);
2411 lprocfs_mdc_init_vars(&lvars);
2412 lprocfs_obd_setup(obd, lvars.obd_vars);
2413 sptlrpc_lprocfs_cliobd_attach(obd);
2414 ptlrpc_lprocfs_register_obd(obd);
2415
2416 ns_register_cancel(obd->obd_namespace, mdc_cancel_for_recovery);
2417
2418 obd->obd_namespace->ns_lvbo = &inode_lvbo;
2419
2420 rc = obd_llog_init(obd, &obd->obd_olg, obd, NULL);
2421 if (rc) {
2422 mdc_cleanup(obd);
2423 CERROR("failed to setup llogging subsystems\n");
2424 }
2425
2426 RETURN(rc);
2427
2428err_close_lock:
2429 OBD_FREE(cli->cl_close_lock, sizeof (*cli->cl_close_lock));
2430err_rpc_lock:
2431 OBD_FREE(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
2432 ptlrpcd_decref();
2433 RETURN(rc);
2434}
2435
2436/* Initialize the default and maximum LOV EA and cookie sizes. This allows
2437 * us to make MDS RPCs with large enough reply buffers to hold the
2438 * maximum-sized (= maximum striped) EA and cookie without having to
2439 * calculate this (via a call into the LOV + OSCs) each time we make an RPC. */
2440static int mdc_init_ea_size(struct obd_export *exp, int easize,
2441 int def_easize, int cookiesize)
2442{
2443 struct obd_device *obd = exp->exp_obd;
2444 struct client_obd *cli = &obd->u.cli;
2445 ENTRY;
2446
2447 if (cli->cl_max_mds_easize < easize)
2448 cli->cl_max_mds_easize = easize;
2449
2450 if (cli->cl_default_mds_easize < def_easize)
2451 cli->cl_default_mds_easize = def_easize;
2452
2453 if (cli->cl_max_mds_cookiesize < cookiesize)
2454 cli->cl_max_mds_cookiesize = cookiesize;
2455
2456 RETURN(0);
2457}
2458
2459static int mdc_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
2460{
2461 int rc = 0;
2462 ENTRY;
2463
2464 switch (stage) {
2465 case OBD_CLEANUP_EARLY:
2466 break;
2467 case OBD_CLEANUP_EXPORTS:
2468 /* Failsafe, ok if racy */
2469 if (obd->obd_type->typ_refcnt <= 1)
2470 libcfs_kkuc_group_rem(0, KUC_GRP_HSM);
2471
2472 obd_cleanup_client_import(obd);
2473 ptlrpc_lprocfs_unregister_obd(obd);
2474 lprocfs_obd_cleanup(obd);
2475
2476 rc = obd_llog_finish(obd, 0);
2477 if (rc != 0)
2478 CERROR("failed to cleanup llogging subsystems\n");
2479 break;
2480 }
2481 RETURN(rc);
2482}
2483
2484static int mdc_cleanup(struct obd_device *obd)
2485{
2486 struct client_obd *cli = &obd->u.cli;
2487
2488 OBD_FREE(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
2489 OBD_FREE(cli->cl_close_lock, sizeof (*cli->cl_close_lock));
2490
2491 ptlrpcd_decref();
2492
2493 return client_obd_cleanup(obd);
2494}
2495
2496
2497static int mdc_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
2498 struct obd_device *tgt, int *index)
2499{
2500 struct llog_ctxt *ctxt;
2501 int rc;
2502
2503 ENTRY;
2504
2505 LASSERT(olg == &obd->obd_olg);
2506
2507 rc = llog_setup(NULL, obd, olg, LLOG_CHANGELOG_REPL_CTXT, tgt,
2508 &llog_client_ops);
2509 if (rc)
2510 RETURN(rc);
2511
2512 ctxt = llog_group_get_ctxt(olg, LLOG_CHANGELOG_REPL_CTXT);
2513 llog_initiator_connect(ctxt);
2514 llog_ctxt_put(ctxt);
2515
2516 RETURN(0);
2517}
2518
2519static int mdc_llog_finish(struct obd_device *obd, int count)
2520{
2521 struct llog_ctxt *ctxt;
2522
2523 ENTRY;
2524
2525 ctxt = llog_get_context(obd, LLOG_CHANGELOG_REPL_CTXT);
2526 if (ctxt)
2527 llog_cleanup(NULL, ctxt);
2528
2529 RETURN(0);
2530}
2531
2532static int mdc_process_config(struct obd_device *obd, obd_count len, void *buf)
2533{
2534 struct lustre_cfg *lcfg = buf;
2535 struct lprocfs_static_vars lvars = { 0 };
2536 int rc = 0;
2537
2538 lprocfs_mdc_init_vars(&lvars);
2539 switch (lcfg->lcfg_command) {
2540 default:
2541 rc = class_process_proc_param(PARAM_MDC, lvars.obd_vars,
2542 lcfg, obd);
2543 if (rc > 0)
2544 rc = 0;
2545 break;
2546 }
2547 return(rc);
2548}
2549
2550
2551/* get remote permission for current user on fid */
2552int mdc_get_remote_perm(struct obd_export *exp, const struct lu_fid *fid,
2553 struct obd_capa *oc, __u32 suppgid,
2554 struct ptlrpc_request **request)
2555{
2556 struct ptlrpc_request *req;
2557 int rc;
2558 ENTRY;
2559
2560 LASSERT(client_is_remote(exp));
2561
2562 *request = NULL;
2563 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_GETATTR);
2564 if (req == NULL)
2565 RETURN(-ENOMEM);
2566
2567 mdc_set_capa_size(req, &RMF_CAPA1, oc);
2568
2569 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR);
2570 if (rc) {
2571 ptlrpc_request_free(req);
2572 RETURN(rc);
2573 }
2574
2575 mdc_pack_body(req, fid, oc, OBD_MD_FLRMTPERM, 0, suppgid, 0);
2576
2577 req_capsule_set_size(&req->rq_pill, &RMF_ACL, RCL_SERVER,
2578 sizeof(struct mdt_remote_perm));
2579
2580 ptlrpc_request_set_replen(req);
2581
2582 rc = ptlrpc_queue_wait(req);
2583 if (rc)
2584 ptlrpc_req_finished(req);
2585 else
2586 *request = req;
2587 RETURN(rc);
2588}
2589
2590static int mdc_interpret_renew_capa(const struct lu_env *env,
2591 struct ptlrpc_request *req, void *args,
2592 int status)
2593{
2594 struct mdc_renew_capa_args *ra = args;
2595 struct mdt_body *body = NULL;
2596 struct lustre_capa *capa;
2597 ENTRY;
2598
2599 if (status)
2600 GOTO(out, capa = ERR_PTR(status));
2601
2602 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
2603 if (body == NULL)
2604 GOTO(out, capa = ERR_PTR(-EFAULT));
2605
2606 if ((body->valid & OBD_MD_FLOSSCAPA) == 0)
2607 GOTO(out, capa = ERR_PTR(-ENOENT));
2608
2609 capa = req_capsule_server_get(&req->rq_pill, &RMF_CAPA2);
2610 if (!capa)
2611 GOTO(out, capa = ERR_PTR(-EFAULT));
2612 EXIT;
2613out:
2614 ra->ra_cb(ra->ra_oc, capa);
2615 return 0;
2616}
2617
2618static int mdc_renew_capa(struct obd_export *exp, struct obd_capa *oc,
2619 renew_capa_cb_t cb)
2620{
2621 struct ptlrpc_request *req;
2622 struct mdc_renew_capa_args *ra;
2623 ENTRY;
2624
2625 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), &RQF_MDS_GETATTR,
2626 LUSTRE_MDS_VERSION, MDS_GETATTR);
2627 if (req == NULL)
2628 RETURN(-ENOMEM);
2629
2630 /* NB, OBD_MD_FLOSSCAPA is set here, but it doesn't necessarily mean the
2631 * capa to renew is oss capa.
2632 */
2633 mdc_pack_body(req, &oc->c_capa.lc_fid, oc, OBD_MD_FLOSSCAPA, 0, -1, 0);
2634 ptlrpc_request_set_replen(req);
2635
2636 CLASSERT(sizeof(*ra) <= sizeof(req->rq_async_args));
2637 ra = ptlrpc_req_async_args(req);
2638 ra->ra_oc = oc;
2639 ra->ra_cb = cb;
2640 req->rq_interpret_reply = mdc_interpret_renew_capa;
2641 ptlrpcd_add_req(req, PDL_POLICY_LOCAL, -1);
2642 RETURN(0);
2643}
2644
2645static int mdc_connect(const struct lu_env *env,
2646 struct obd_export **exp,
2647 struct obd_device *obd, struct obd_uuid *cluuid,
2648 struct obd_connect_data *data,
2649 void *localdata)
2650{
2651 struct obd_import *imp = obd->u.cli.cl_import;
2652
2653 /* mds-mds import features */
2654 if (data && (data->ocd_connect_flags & OBD_CONNECT_MDS_MDS)) {
2655 spin_lock(&imp->imp_lock);
2656 imp->imp_server_timeout = 1;
2657 spin_unlock(&imp->imp_lock);
2658 imp->imp_client->cli_request_portal = MDS_MDS_PORTAL;
2659 CDEBUG(D_OTHER, "%s: Set 'mds' portal and timeout\n",
2660 obd->obd_name);
2661 }
2662
2663 return client_connect_import(env, exp, obd, cluuid, data, NULL);
2664}
2665
2666struct obd_ops mdc_obd_ops = {
2667 .o_owner = THIS_MODULE,
2668 .o_setup = mdc_setup,
2669 .o_precleanup = mdc_precleanup,
2670 .o_cleanup = mdc_cleanup,
2671 .o_add_conn = client_import_add_conn,
2672 .o_del_conn = client_import_del_conn,
2673 .o_connect = mdc_connect,
2674 .o_disconnect = client_disconnect_export,
2675 .o_iocontrol = mdc_iocontrol,
2676 .o_set_info_async = mdc_set_info_async,
2677 .o_statfs = mdc_statfs,
2678 .o_pin = mdc_pin,
2679 .o_unpin = mdc_unpin,
2680 .o_fid_init = client_fid_init,
2681 .o_fid_fini = client_fid_fini,
2682 .o_fid_alloc = mdc_fid_alloc,
2683 .o_import_event = mdc_import_event,
2684 .o_llog_init = mdc_llog_init,
2685 .o_llog_finish = mdc_llog_finish,
2686 .o_get_info = mdc_get_info,
2687 .o_process_config = mdc_process_config,
2688 .o_get_uuid = mdc_get_uuid,
2689 .o_quotactl = mdc_quotactl,
2690 .o_quotacheck = mdc_quotacheck
2691};
2692
2693struct md_ops mdc_md_ops = {
2694 .m_getstatus = mdc_getstatus,
2695 .m_null_inode = mdc_null_inode,
2696 .m_find_cbdata = mdc_find_cbdata,
2697 .m_close = mdc_close,
2698 .m_create = mdc_create,
2699 .m_done_writing = mdc_done_writing,
2700 .m_enqueue = mdc_enqueue,
2701 .m_getattr = mdc_getattr,
2702 .m_getattr_name = mdc_getattr_name,
2703 .m_intent_lock = mdc_intent_lock,
2704 .m_link = mdc_link,
2705 .m_is_subdir = mdc_is_subdir,
2706 .m_rename = mdc_rename,
2707 .m_setattr = mdc_setattr,
2708 .m_setxattr = mdc_setxattr,
2709 .m_getxattr = mdc_getxattr,
2710 .m_sync = mdc_sync,
2711 .m_readpage = mdc_readpage,
2712 .m_unlink = mdc_unlink,
2713 .m_cancel_unused = mdc_cancel_unused,
2714 .m_init_ea_size = mdc_init_ea_size,
2715 .m_set_lock_data = mdc_set_lock_data,
2716 .m_lock_match = mdc_lock_match,
2717 .m_get_lustre_md = mdc_get_lustre_md,
2718 .m_free_lustre_md = mdc_free_lustre_md,
2719 .m_set_open_replay_data = mdc_set_open_replay_data,
2720 .m_clear_open_replay_data = mdc_clear_open_replay_data,
2721 .m_renew_capa = mdc_renew_capa,
2722 .m_unpack_capa = mdc_unpack_capa,
2723 .m_get_remote_perm = mdc_get_remote_perm,
2724 .m_intent_getattr_async = mdc_intent_getattr_async,
2725 .m_revalidate_lock = mdc_revalidate_lock
2726};
2727
2728int __init mdc_init(void)
2729{
2730 int rc;
2731 struct lprocfs_static_vars lvars = { 0 };
2732 lprocfs_mdc_init_vars(&lvars);
2733
2734 rc = class_register_type(&mdc_obd_ops, &mdc_md_ops, lvars.module_vars,
2735 LUSTRE_MDC_NAME, NULL);
2736 RETURN(rc);
2737}
2738
2739static void /*__exit*/ mdc_exit(void)
2740{
2741 class_unregister_type(LUSTRE_MDC_NAME);
2742}
2743
2744MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
2745MODULE_DESCRIPTION("Lustre Metadata Client");
2746MODULE_LICENSE("GPL");
2747
2748module_init(mdc_init);
2749module_exit(mdc_exit);
Linux kernel - Deliverables
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