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[mirror_ubuntu-artful-kernel.git] / drivers / staging / lustre / lustre / mdc / mdc_request.c
1 /*
2 * GPL HEADER START
3 *
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
19 *
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
22 * have any questions.
23 *
24 * GPL HEADER END
25 */
26 /*
27 * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
29 *
30 * Copyright (c) 2011, 2012, Intel Corporation.
31 */
32 /*
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
35 */
36
37 #define DEBUG_SUBSYSTEM S_MDC
38
39 # include <linux/module.h>
40 # include <linux/pagemap.h>
41 # include <linux/miscdevice.h>
42 # include <linux/init.h>
43 # include <linux/utsname.h>
44
45 #include "../include/lustre_acl.h"
46 #include "../include/obd_class.h"
47 #include "../include/lustre_fid.h"
48 #include "../include/lprocfs_status.h"
49 #include "../include/lustre_param.h"
50 #include "../include/lustre_log.h"
51
52 #include "mdc_internal.h"
53
54 #define REQUEST_MINOR 244
55
56 struct mdc_renew_capa_args {
57 struct obd_capa *ra_oc;
58 renew_capa_cb_t ra_cb;
59 };
60
61 static int mdc_cleanup(struct obd_device *obd);
62
63 int mdc_unpack_capa(struct obd_export *exp, struct ptlrpc_request *req,
64 const struct req_msg_field *field, struct obd_capa **oc)
65 {
66 struct lustre_capa *capa;
67 struct obd_capa *c;
68
69 /* swabbed already in mdc_enqueue */
70 capa = req_capsule_server_get(&req->rq_pill, field);
71 if (capa == NULL)
72 return -EPROTO;
73
74 c = alloc_capa(CAPA_SITE_CLIENT);
75 if (IS_ERR(c)) {
76 CDEBUG(D_INFO, "alloc capa failed!\n");
77 return PTR_ERR(c);
78 } else {
79 c->c_capa = *capa;
80 *oc = c;
81 return 0;
82 }
83 }
84
85 static inline int mdc_queue_wait(struct ptlrpc_request *req)
86 {
87 struct client_obd *cli = &req->rq_import->imp_obd->u.cli;
88 int rc;
89
90 /* mdc_enter_request() ensures that this client has no more
91 * than cl_max_rpcs_in_flight RPCs simultaneously inf light
92 * against an MDT. */
93 rc = mdc_enter_request(cli);
94 if (rc != 0)
95 return rc;
96
97 rc = ptlrpc_queue_wait(req);
98 mdc_exit_request(cli);
99
100 return rc;
101 }
102
103 /* Helper that implements most of mdc_getstatus and signal_completed_replay. */
104 /* XXX this should become mdc_get_info("key"), sending MDS_GET_INFO RPC */
105 static int send_getstatus(struct obd_import *imp, struct lu_fid *rootfid,
106 struct obd_capa **pc, int level, int msg_flags)
107 {
108 struct ptlrpc_request *req;
109 struct mdt_body *body;
110 int rc;
111
112 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_GETSTATUS,
113 LUSTRE_MDS_VERSION, MDS_GETSTATUS);
114 if (req == NULL)
115 return -ENOMEM;
116
117 mdc_pack_body(req, NULL, NULL, 0, 0, -1, 0);
118 lustre_msg_add_flags(req->rq_reqmsg, msg_flags);
119 req->rq_send_state = level;
120
121 ptlrpc_request_set_replen(req);
122
123 rc = ptlrpc_queue_wait(req);
124 if (rc)
125 GOTO(out, rc);
126
127 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
128 if (body == NULL)
129 GOTO(out, rc = -EPROTO);
130
131 if (body->valid & OBD_MD_FLMDSCAPA) {
132 rc = mdc_unpack_capa(NULL, req, &RMF_CAPA1, pc);
133 if (rc)
134 GOTO(out, rc);
135 }
136
137 *rootfid = body->fid1;
138 CDEBUG(D_NET,
139 "root fid="DFID", last_committed=%llu\n",
140 PFID(rootfid),
141 lustre_msg_get_last_committed(req->rq_repmsg));
142 out:
143 ptlrpc_req_finished(req);
144 return rc;
145 }
146
147 /* This should be mdc_get_info("rootfid") */
148 int mdc_getstatus(struct obd_export *exp, struct lu_fid *rootfid,
149 struct obd_capa **pc)
150 {
151 return send_getstatus(class_exp2cliimp(exp), rootfid, pc,
152 LUSTRE_IMP_FULL, 0);
153 }
154
155 /*
156 * This function now is known to always saying that it will receive 4 buffers
157 * from server. Even for cases when acl_size and md_size is zero, RPC header
158 * will contain 4 fields and RPC itself will contain zero size fields. This is
159 * because mdt_getattr*() _always_ returns 4 fields, but if acl is not needed
160 * and thus zero, it shrinks it, making zero size. The same story about
161 * md_size. And this is course of problem when client waits for smaller number
162 * of fields. This issue will be fixed later when client gets aware of RPC
163 * layouts. --umka
164 */
165 static int mdc_getattr_common(struct obd_export *exp,
166 struct ptlrpc_request *req)
167 {
168 struct req_capsule *pill = &req->rq_pill;
169 struct mdt_body *body;
170 void *eadata;
171 int rc;
172
173 /* Request message already built. */
174 rc = ptlrpc_queue_wait(req);
175 if (rc != 0)
176 return rc;
177
178 /* sanity check for the reply */
179 body = req_capsule_server_get(pill, &RMF_MDT_BODY);
180 if (body == NULL)
181 return -EPROTO;
182
183 CDEBUG(D_NET, "mode: %o\n", body->mode);
184
185 if (body->eadatasize != 0) {
186 mdc_update_max_ea_from_body(exp, body);
187
188 eadata = req_capsule_server_sized_get(pill, &RMF_MDT_MD,
189 body->eadatasize);
190 if (eadata == NULL)
191 return -EPROTO;
192 }
193
194 if (body->valid & OBD_MD_FLRMTPERM) {
195 struct mdt_remote_perm *perm;
196
197 LASSERT(client_is_remote(exp));
198 perm = req_capsule_server_swab_get(pill, &RMF_ACL,
199 lustre_swab_mdt_remote_perm);
200 if (perm == NULL)
201 return -EPROTO;
202 }
203
204 if (body->valid & OBD_MD_FLMDSCAPA) {
205 struct lustre_capa *capa;
206 capa = req_capsule_server_get(pill, &RMF_CAPA1);
207 if (capa == NULL)
208 return -EPROTO;
209 }
210
211 return 0;
212 }
213
214 int mdc_getattr(struct obd_export *exp, struct md_op_data *op_data,
215 struct ptlrpc_request **request)
216 {
217 struct ptlrpc_request *req;
218 int rc;
219
220 /* Single MDS without an LMV case */
221 if (op_data->op_flags & MF_GET_MDT_IDX) {
222 op_data->op_mds = 0;
223 return 0;
224 }
225 *request = NULL;
226 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_GETATTR);
227 if (req == NULL)
228 return -ENOMEM;
229
230 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
231
232 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR);
233 if (rc) {
234 ptlrpc_request_free(req);
235 return rc;
236 }
237
238 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1,
239 op_data->op_valid, op_data->op_mode, -1, 0);
240
241 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
242 op_data->op_mode);
243 if (op_data->op_valid & OBD_MD_FLRMTPERM) {
244 LASSERT(client_is_remote(exp));
245 req_capsule_set_size(&req->rq_pill, &RMF_ACL, RCL_SERVER,
246 sizeof(struct mdt_remote_perm));
247 }
248 ptlrpc_request_set_replen(req);
249
250 rc = mdc_getattr_common(exp, req);
251 if (rc)
252 ptlrpc_req_finished(req);
253 else
254 *request = req;
255 return rc;
256 }
257
258 int mdc_getattr_name(struct obd_export *exp, struct md_op_data *op_data,
259 struct ptlrpc_request **request)
260 {
261 struct ptlrpc_request *req;
262 int rc;
263
264 *request = NULL;
265 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
266 &RQF_MDS_GETATTR_NAME);
267 if (req == NULL)
268 return -ENOMEM;
269
270 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
271 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
272 op_data->op_namelen + 1);
273
274 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR_NAME);
275 if (rc) {
276 ptlrpc_request_free(req);
277 return rc;
278 }
279
280 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1,
281 op_data->op_valid, op_data->op_mode,
282 op_data->op_suppgids[0], 0);
283
284 if (op_data->op_name) {
285 char *name = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
286 LASSERT(strnlen(op_data->op_name, op_data->op_namelen) ==
287 op_data->op_namelen);
288 memcpy(name, op_data->op_name, op_data->op_namelen);
289 }
290
291 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
292 op_data->op_mode);
293 ptlrpc_request_set_replen(req);
294
295 rc = mdc_getattr_common(exp, req);
296 if (rc)
297 ptlrpc_req_finished(req);
298 else
299 *request = req;
300 return rc;
301 }
302
303 static int mdc_is_subdir(struct obd_export *exp,
304 const struct lu_fid *pfid,
305 const struct lu_fid *cfid,
306 struct ptlrpc_request **request)
307 {
308 struct ptlrpc_request *req;
309 int rc;
310
311 *request = NULL;
312 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
313 &RQF_MDS_IS_SUBDIR, LUSTRE_MDS_VERSION,
314 MDS_IS_SUBDIR);
315 if (req == NULL)
316 return -ENOMEM;
317
318 mdc_is_subdir_pack(req, pfid, cfid, 0);
319 ptlrpc_request_set_replen(req);
320
321 rc = ptlrpc_queue_wait(req);
322 if (rc && rc != -EREMOTE)
323 ptlrpc_req_finished(req);
324 else
325 *request = req;
326 return rc;
327 }
328
329 static int mdc_xattr_common(struct obd_export *exp,const struct req_format *fmt,
330 const struct lu_fid *fid,
331 struct obd_capa *oc, int opcode, obd_valid valid,
332 const char *xattr_name, const char *input,
333 int input_size, int output_size, int flags,
334 __u32 suppgid, struct ptlrpc_request **request)
335 {
336 struct ptlrpc_request *req;
337 int xattr_namelen = 0;
338 char *tmp;
339 int rc;
340
341 *request = NULL;
342 req = ptlrpc_request_alloc(class_exp2cliimp(exp), fmt);
343 if (req == NULL)
344 return -ENOMEM;
345
346 mdc_set_capa_size(req, &RMF_CAPA1, oc);
347 if (xattr_name) {
348 xattr_namelen = strlen(xattr_name) + 1;
349 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
350 xattr_namelen);
351 }
352 if (input_size) {
353 LASSERT(input);
354 req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_CLIENT,
355 input_size);
356 }
357
358 /* Flush local XATTR locks to get rid of a possible cancel RPC */
359 if (opcode == MDS_REINT && fid_is_sane(fid) &&
360 exp->exp_connect_data.ocd_ibits_known & MDS_INODELOCK_XATTR) {
361 LIST_HEAD(cancels);
362 int count;
363
364 /* Without that packing would fail */
365 if (input_size == 0)
366 req_capsule_set_size(&req->rq_pill, &RMF_EADATA,
367 RCL_CLIENT, 0);
368
369 count = mdc_resource_get_unused(exp, fid,
370 &cancels, LCK_EX,
371 MDS_INODELOCK_XATTR);
372
373 rc = mdc_prep_elc_req(exp, req, MDS_REINT, &cancels, count);
374 if (rc) {
375 ptlrpc_request_free(req);
376 return rc;
377 }
378 } else {
379 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, opcode);
380 if (rc) {
381 ptlrpc_request_free(req);
382 return rc;
383 }
384 }
385
386 if (opcode == MDS_REINT) {
387 struct mdt_rec_setxattr *rec;
388
389 CLASSERT(sizeof(struct mdt_rec_setxattr) ==
390 sizeof(struct mdt_rec_reint));
391 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
392 rec->sx_opcode = REINT_SETXATTR;
393 rec->sx_fsuid = from_kuid(&init_user_ns, current_fsuid());
394 rec->sx_fsgid = from_kgid(&init_user_ns, current_fsgid());
395 rec->sx_cap = cfs_curproc_cap_pack();
396 rec->sx_suppgid1 = suppgid;
397 rec->sx_suppgid2 = -1;
398 rec->sx_fid = *fid;
399 rec->sx_valid = valid | OBD_MD_FLCTIME;
400 rec->sx_time = get_seconds();
401 rec->sx_size = output_size;
402 rec->sx_flags = flags;
403
404 mdc_pack_capa(req, &RMF_CAPA1, oc);
405 } else {
406 mdc_pack_body(req, fid, oc, valid, output_size, suppgid, flags);
407 }
408
409 if (xattr_name) {
410 tmp = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
411 memcpy(tmp, xattr_name, xattr_namelen);
412 }
413 if (input_size) {
414 tmp = req_capsule_client_get(&req->rq_pill, &RMF_EADATA);
415 memcpy(tmp, input, input_size);
416 }
417
418 if (req_capsule_has_field(&req->rq_pill, &RMF_EADATA, RCL_SERVER))
419 req_capsule_set_size(&req->rq_pill, &RMF_EADATA,
420 RCL_SERVER, output_size);
421 ptlrpc_request_set_replen(req);
422
423 /* make rpc */
424 if (opcode == MDS_REINT)
425 mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
426
427 rc = ptlrpc_queue_wait(req);
428
429 if (opcode == MDS_REINT)
430 mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
431
432 if (rc)
433 ptlrpc_req_finished(req);
434 else
435 *request = req;
436 return rc;
437 }
438
439 int mdc_setxattr(struct obd_export *exp, const struct lu_fid *fid,
440 struct obd_capa *oc, obd_valid valid, const char *xattr_name,
441 const char *input, int input_size, int output_size,
442 int flags, __u32 suppgid, struct ptlrpc_request **request)
443 {
444 return mdc_xattr_common(exp, &RQF_MDS_REINT_SETXATTR,
445 fid, oc, MDS_REINT, valid, xattr_name,
446 input, input_size, output_size, flags,
447 suppgid, request);
448 }
449
450 int mdc_getxattr(struct obd_export *exp, const struct lu_fid *fid,
451 struct obd_capa *oc, obd_valid valid, const char *xattr_name,
452 const char *input, int input_size, int output_size,
453 int flags, struct ptlrpc_request **request)
454 {
455 return mdc_xattr_common(exp, &RQF_MDS_GETXATTR,
456 fid, oc, MDS_GETXATTR, valid, xattr_name,
457 input, input_size, output_size, flags,
458 -1, request);
459 }
460
461 #ifdef CONFIG_FS_POSIX_ACL
462 static int mdc_unpack_acl(struct ptlrpc_request *req, struct lustre_md *md)
463 {
464 struct req_capsule *pill = &req->rq_pill;
465 struct mdt_body *body = md->body;
466 struct posix_acl *acl;
467 void *buf;
468 int rc;
469
470 if (!body->aclsize)
471 return 0;
472
473 buf = req_capsule_server_sized_get(pill, &RMF_ACL, body->aclsize);
474
475 if (!buf)
476 return -EPROTO;
477
478 acl = posix_acl_from_xattr(&init_user_ns, buf, body->aclsize);
479 if (IS_ERR(acl)) {
480 rc = PTR_ERR(acl);
481 CERROR("convert xattr to acl: %d\n", rc);
482 return rc;
483 }
484
485 rc = posix_acl_valid(acl);
486 if (rc) {
487 CERROR("validate acl: %d\n", rc);
488 posix_acl_release(acl);
489 return rc;
490 }
491
492 md->posix_acl = acl;
493 return 0;
494 }
495 #else
496 #define mdc_unpack_acl(req, md) 0
497 #endif
498
499 int mdc_get_lustre_md(struct obd_export *exp, struct ptlrpc_request *req,
500 struct obd_export *dt_exp, struct obd_export *md_exp,
501 struct lustre_md *md)
502 {
503 struct req_capsule *pill = &req->rq_pill;
504 int rc;
505
506 LASSERT(md);
507 memset(md, 0, sizeof(*md));
508
509 md->body = req_capsule_server_get(pill, &RMF_MDT_BODY);
510 LASSERT(md->body != NULL);
511
512 if (md->body->valid & OBD_MD_FLEASIZE) {
513 int lmmsize;
514 struct lov_mds_md *lmm;
515
516 if (!S_ISREG(md->body->mode)) {
517 CDEBUG(D_INFO, "OBD_MD_FLEASIZE set, should be a "
518 "regular file, but is not\n");
519 GOTO(out, rc = -EPROTO);
520 }
521
522 if (md->body->eadatasize == 0) {
523 CDEBUG(D_INFO, "OBD_MD_FLEASIZE set, "
524 "but eadatasize 0\n");
525 GOTO(out, rc = -EPROTO);
526 }
527 lmmsize = md->body->eadatasize;
528 lmm = req_capsule_server_sized_get(pill, &RMF_MDT_MD, lmmsize);
529 if (!lmm)
530 GOTO(out, rc = -EPROTO);
531
532 rc = obd_unpackmd(dt_exp, &md->lsm, lmm, lmmsize);
533 if (rc < 0)
534 GOTO(out, rc);
535
536 if (rc < sizeof(*md->lsm)) {
537 CDEBUG(D_INFO, "lsm size too small: "
538 "rc < sizeof (*md->lsm) (%d < %d)\n",
539 rc, (int)sizeof(*md->lsm));
540 GOTO(out, rc = -EPROTO);
541 }
542
543 } else if (md->body->valid & OBD_MD_FLDIREA) {
544 int lmvsize;
545 struct lov_mds_md *lmv;
546
547 if(!S_ISDIR(md->body->mode)) {
548 CDEBUG(D_INFO, "OBD_MD_FLDIREA set, should be a "
549 "directory, but is not\n");
550 GOTO(out, rc = -EPROTO);
551 }
552
553 if (md->body->eadatasize == 0) {
554 CDEBUG(D_INFO, "OBD_MD_FLDIREA is set, "
555 "but eadatasize 0\n");
556 return -EPROTO;
557 }
558 if (md->body->valid & OBD_MD_MEA) {
559 lmvsize = md->body->eadatasize;
560 lmv = req_capsule_server_sized_get(pill, &RMF_MDT_MD,
561 lmvsize);
562 if (!lmv)
563 GOTO(out, rc = -EPROTO);
564
565 rc = obd_unpackmd(md_exp, (void *)&md->mea, lmv,
566 lmvsize);
567 if (rc < 0)
568 GOTO(out, rc);
569
570 if (rc < sizeof(*md->mea)) {
571 CDEBUG(D_INFO, "size too small: "
572 "rc < sizeof(*md->mea) (%d < %d)\n",
573 rc, (int)sizeof(*md->mea));
574 GOTO(out, rc = -EPROTO);
575 }
576 }
577 }
578 rc = 0;
579
580 if (md->body->valid & OBD_MD_FLRMTPERM) {
581 /* remote permission */
582 LASSERT(client_is_remote(exp));
583 md->remote_perm = req_capsule_server_swab_get(pill, &RMF_ACL,
584 lustre_swab_mdt_remote_perm);
585 if (!md->remote_perm)
586 GOTO(out, rc = -EPROTO);
587 }
588 else if (md->body->valid & OBD_MD_FLACL) {
589 /* for ACL, it's possible that FLACL is set but aclsize is zero.
590 * only when aclsize != 0 there's an actual segment for ACL
591 * in reply buffer.
592 */
593 if (md->body->aclsize) {
594 rc = mdc_unpack_acl(req, md);
595 if (rc)
596 GOTO(out, rc);
597 #ifdef CONFIG_FS_POSIX_ACL
598 } else {
599 md->posix_acl = NULL;
600 #endif
601 }
602 }
603 if (md->body->valid & OBD_MD_FLMDSCAPA) {
604 struct obd_capa *oc = NULL;
605
606 rc = mdc_unpack_capa(NULL, req, &RMF_CAPA1, &oc);
607 if (rc)
608 GOTO(out, rc);
609 md->mds_capa = oc;
610 }
611
612 if (md->body->valid & OBD_MD_FLOSSCAPA) {
613 struct obd_capa *oc = NULL;
614
615 rc = mdc_unpack_capa(NULL, req, &RMF_CAPA2, &oc);
616 if (rc)
617 GOTO(out, rc);
618 md->oss_capa = oc;
619 }
620
621 out:
622 if (rc) {
623 if (md->oss_capa) {
624 capa_put(md->oss_capa);
625 md->oss_capa = NULL;
626 }
627 if (md->mds_capa) {
628 capa_put(md->mds_capa);
629 md->mds_capa = NULL;
630 }
631 #ifdef CONFIG_FS_POSIX_ACL
632 posix_acl_release(md->posix_acl);
633 #endif
634 if (md->lsm)
635 obd_free_memmd(dt_exp, &md->lsm);
636 }
637 return rc;
638 }
639
640 int mdc_free_lustre_md(struct obd_export *exp, struct lustre_md *md)
641 {
642 return 0;
643 }
644
645 /**
646 * Handles both OPEN and SETATTR RPCs for OPEN-CLOSE and SETATTR-DONE_WRITING
647 * RPC chains.
648 */
649 void mdc_replay_open(struct ptlrpc_request *req)
650 {
651 struct md_open_data *mod = req->rq_cb_data;
652 struct ptlrpc_request *close_req;
653 struct obd_client_handle *och;
654 struct lustre_handle old;
655 struct mdt_body *body;
656
657 if (mod == NULL) {
658 DEBUG_REQ(D_ERROR, req,
659 "Can't properly replay without open data.");
660 return;
661 }
662
663 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
664 LASSERT(body != NULL);
665
666 och = mod->mod_och;
667 if (och != NULL) {
668 struct lustre_handle *file_fh;
669
670 LASSERT(och->och_magic == OBD_CLIENT_HANDLE_MAGIC);
671
672 file_fh = &och->och_fh;
673 CDEBUG(D_HA, "updating handle from "LPX64" to "LPX64"\n",
674 file_fh->cookie, body->handle.cookie);
675 old = *file_fh;
676 *file_fh = body->handle;
677 }
678 close_req = mod->mod_close_req;
679 if (close_req != NULL) {
680 __u32 opc = lustre_msg_get_opc(close_req->rq_reqmsg);
681 struct mdt_ioepoch *epoch;
682
683 LASSERT(opc == MDS_CLOSE || opc == MDS_DONE_WRITING);
684 epoch = req_capsule_client_get(&close_req->rq_pill,
685 &RMF_MDT_EPOCH);
686 LASSERT(epoch);
687
688 if (och != NULL)
689 LASSERT(!memcmp(&old, &epoch->handle, sizeof(old)));
690 DEBUG_REQ(D_HA, close_req, "updating close body with new fh");
691 epoch->handle = body->handle;
692 }
693 }
694
695 void mdc_commit_open(struct ptlrpc_request *req)
696 {
697 struct md_open_data *mod = req->rq_cb_data;
698 if (mod == NULL)
699 return;
700
701 /**
702 * No need to touch md_open_data::mod_och, it holds a reference on
703 * \var mod and will zero references to each other, \var mod will be
704 * freed after that when md_open_data::mod_och will put the reference.
705 */
706
707 /**
708 * Do not let open request to disappear as it still may be needed
709 * for close rpc to happen (it may happen on evict only, otherwise
710 * ptlrpc_request::rq_replay does not let mdc_commit_open() to be
711 * called), just mark this rpc as committed to distinguish these 2
712 * cases, see mdc_close() for details. The open request reference will
713 * be put along with freeing \var mod.
714 */
715 ptlrpc_request_addref(req);
716 spin_lock(&req->rq_lock);
717 req->rq_committed = 1;
718 spin_unlock(&req->rq_lock);
719 req->rq_cb_data = NULL;
720 obd_mod_put(mod);
721 }
722
723 int mdc_set_open_replay_data(struct obd_export *exp,
724 struct obd_client_handle *och,
725 struct lookup_intent *it)
726 {
727 struct md_open_data *mod;
728 struct mdt_rec_create *rec;
729 struct mdt_body *body;
730 struct ptlrpc_request *open_req = it->d.lustre.it_data;
731 struct obd_import *imp = open_req->rq_import;
732
733 if (!open_req->rq_replay)
734 return 0;
735
736 rec = req_capsule_client_get(&open_req->rq_pill, &RMF_REC_REINT);
737 body = req_capsule_server_get(&open_req->rq_pill, &RMF_MDT_BODY);
738 LASSERT(rec != NULL);
739 /* Incoming message in my byte order (it's been swabbed). */
740 /* Outgoing messages always in my byte order. */
741 LASSERT(body != NULL);
742
743 /* Only if the import is replayable, we set replay_open data */
744 if (och && imp->imp_replayable) {
745 mod = obd_mod_alloc();
746 if (mod == NULL) {
747 DEBUG_REQ(D_ERROR, open_req,
748 "Can't allocate md_open_data");
749 return 0;
750 }
751
752 /**
753 * Take a reference on \var mod, to be freed on mdc_close().
754 * It protects \var mod from being freed on eviction (commit
755 * callback is called despite rq_replay flag).
756 * Another reference for \var och.
757 */
758 obd_mod_get(mod);
759 obd_mod_get(mod);
760
761 spin_lock(&open_req->rq_lock);
762 och->och_mod = mod;
763 mod->mod_och = och;
764 mod->mod_is_create = it_disposition(it, DISP_OPEN_CREATE) ||
765 it_disposition(it, DISP_OPEN_STRIPE);
766 mod->mod_open_req = open_req;
767 open_req->rq_cb_data = mod;
768 open_req->rq_commit_cb = mdc_commit_open;
769 spin_unlock(&open_req->rq_lock);
770 }
771
772 rec->cr_fid2 = body->fid1;
773 rec->cr_ioepoch = body->ioepoch;
774 rec->cr_old_handle.cookie = body->handle.cookie;
775 open_req->rq_replay_cb = mdc_replay_open;
776 if (!fid_is_sane(&body->fid1)) {
777 DEBUG_REQ(D_ERROR, open_req, "Saving replay request with "
778 "insane fid");
779 LBUG();
780 }
781
782 DEBUG_REQ(D_RPCTRACE, open_req, "Set up open replay data");
783 return 0;
784 }
785
786 static void mdc_free_open(struct md_open_data *mod)
787 {
788 int committed = 0;
789
790 if (mod->mod_is_create == 0 &&
791 imp_connect_disp_stripe(mod->mod_open_req->rq_import))
792 committed = 1;
793
794 LASSERT(mod->mod_open_req->rq_replay == 0);
795
796 DEBUG_REQ(D_RPCTRACE, mod->mod_open_req, "free open request\n");
797
798 ptlrpc_request_committed(mod->mod_open_req, committed);
799 if (mod->mod_close_req)
800 ptlrpc_request_committed(mod->mod_close_req, committed);
801 }
802
803 int mdc_clear_open_replay_data(struct obd_export *exp,
804 struct obd_client_handle *och)
805 {
806 struct md_open_data *mod = och->och_mod;
807
808 /**
809 * It is possible to not have \var mod in a case of eviction between
810 * lookup and ll_file_open().
811 **/
812 if (mod == NULL)
813 return 0;
814
815 LASSERT(mod != LP_POISON);
816 LASSERT(mod->mod_open_req != NULL);
817 mdc_free_open(mod);
818
819 mod->mod_och = NULL;
820 och->och_mod = NULL;
821 obd_mod_put(mod);
822
823 return 0;
824 }
825
826 /* Prepares the request for the replay by the given reply */
827 static void mdc_close_handle_reply(struct ptlrpc_request *req,
828 struct md_op_data *op_data, int rc) {
829 struct mdt_body *repbody;
830 struct mdt_ioepoch *epoch;
831
832 if (req && rc == -EAGAIN) {
833 repbody = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
834 epoch = req_capsule_client_get(&req->rq_pill, &RMF_MDT_EPOCH);
835
836 epoch->flags |= MF_SOM_AU;
837 if (repbody->valid & OBD_MD_FLGETATTRLOCK)
838 op_data->op_flags |= MF_GETATTR_LOCK;
839 }
840 }
841
842 int mdc_close(struct obd_export *exp, struct md_op_data *op_data,
843 struct md_open_data *mod, struct ptlrpc_request **request)
844 {
845 struct obd_device *obd = class_exp2obd(exp);
846 struct ptlrpc_request *req;
847 struct req_format *req_fmt;
848 int rc;
849 int saved_rc = 0;
850
851
852 req_fmt = &RQF_MDS_CLOSE;
853 if (op_data->op_bias & MDS_HSM_RELEASE) {
854 req_fmt = &RQF_MDS_RELEASE_CLOSE;
855
856 /* allocate a FID for volatile file */
857 rc = mdc_fid_alloc(exp, &op_data->op_fid2, op_data);
858 if (rc < 0) {
859 CERROR("%s: "DFID" failed to allocate FID: %d\n",
860 obd->obd_name, PFID(&op_data->op_fid1), rc);
861 /* save the errcode and proceed to close */
862 saved_rc = rc;
863 }
864 }
865
866 *request = NULL;
867 req = ptlrpc_request_alloc(class_exp2cliimp(exp), req_fmt);
868 if (req == NULL)
869 return -ENOMEM;
870
871 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
872
873 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_CLOSE);
874 if (rc) {
875 ptlrpc_request_free(req);
876 return rc;
877 }
878
879 /* To avoid a livelock (bug 7034), we need to send CLOSE RPCs to a
880 * portal whose threads are not taking any DLM locks and are therefore
881 * always progressing */
882 req->rq_request_portal = MDS_READPAGE_PORTAL;
883 ptlrpc_at_set_req_timeout(req);
884
885 /* Ensure that this close's handle is fixed up during replay. */
886 if (likely(mod != NULL)) {
887 LASSERTF(mod->mod_open_req != NULL &&
888 mod->mod_open_req->rq_type != LI_POISON,
889 "POISONED open %p!\n", mod->mod_open_req);
890
891 mod->mod_close_req = req;
892
893 DEBUG_REQ(D_HA, mod->mod_open_req, "matched open");
894 /* We no longer want to preserve this open for replay even
895 * though the open was committed. b=3632, b=3633 */
896 spin_lock(&mod->mod_open_req->rq_lock);
897 mod->mod_open_req->rq_replay = 0;
898 spin_unlock(&mod->mod_open_req->rq_lock);
899 } else {
900 CDEBUG(D_HA, "couldn't find open req; expecting close error\n");
901 }
902
903 mdc_close_pack(req, op_data);
904
905 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
906 obd->u.cli.cl_default_mds_easize);
907 req_capsule_set_size(&req->rq_pill, &RMF_LOGCOOKIES, RCL_SERVER,
908 obd->u.cli.cl_default_mds_cookiesize);
909
910 ptlrpc_request_set_replen(req);
911
912 mdc_get_rpc_lock(obd->u.cli.cl_close_lock, NULL);
913 rc = ptlrpc_queue_wait(req);
914 mdc_put_rpc_lock(obd->u.cli.cl_close_lock, NULL);
915
916 if (req->rq_repmsg == NULL) {
917 CDEBUG(D_RPCTRACE, "request failed to send: %p, %d\n", req,
918 req->rq_status);
919 if (rc == 0)
920 rc = req->rq_status ?: -EIO;
921 } else if (rc == 0 || rc == -EAGAIN) {
922 struct mdt_body *body;
923
924 rc = lustre_msg_get_status(req->rq_repmsg);
925 if (lustre_msg_get_type(req->rq_repmsg) == PTL_RPC_MSG_ERR) {
926 DEBUG_REQ(D_ERROR, req, "type == PTL_RPC_MSG_ERR, err "
927 "= %d", rc);
928 if (rc > 0)
929 rc = -rc;
930 }
931 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
932 if (body == NULL)
933 rc = -EPROTO;
934 } else if (rc == -ESTALE) {
935 /**
936 * it can be allowed error after 3633 if open was committed and
937 * server failed before close was sent. Let's check if mod
938 * exists and return no error in that case
939 */
940 if (mod) {
941 DEBUG_REQ(D_HA, req, "Reset ESTALE = %d", rc);
942 LASSERT(mod->mod_open_req != NULL);
943 if (mod->mod_open_req->rq_committed)
944 rc = 0;
945 }
946 }
947
948 if (mod) {
949 if (rc != 0)
950 mod->mod_close_req = NULL;
951 /* Since now, mod is accessed through open_req only,
952 * thus close req does not keep a reference on mod anymore. */
953 obd_mod_put(mod);
954 }
955 *request = req;
956 mdc_close_handle_reply(req, op_data, rc);
957 return rc < 0 ? rc : saved_rc;
958 }
959
960 int mdc_done_writing(struct obd_export *exp, struct md_op_data *op_data,
961 struct md_open_data *mod)
962 {
963 struct obd_device *obd = class_exp2obd(exp);
964 struct ptlrpc_request *req;
965 int rc;
966
967 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
968 &RQF_MDS_DONE_WRITING);
969 if (req == NULL)
970 return -ENOMEM;
971
972 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
973 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_DONE_WRITING);
974 if (rc) {
975 ptlrpc_request_free(req);
976 return rc;
977 }
978
979 if (mod != NULL) {
980 LASSERTF(mod->mod_open_req != NULL &&
981 mod->mod_open_req->rq_type != LI_POISON,
982 "POISONED setattr %p!\n", mod->mod_open_req);
983
984 mod->mod_close_req = req;
985 DEBUG_REQ(D_HA, mod->mod_open_req, "matched setattr");
986 /* We no longer want to preserve this setattr for replay even
987 * though the open was committed. b=3632, b=3633 */
988 spin_lock(&mod->mod_open_req->rq_lock);
989 mod->mod_open_req->rq_replay = 0;
990 spin_unlock(&mod->mod_open_req->rq_lock);
991 }
992
993 mdc_close_pack(req, op_data);
994 ptlrpc_request_set_replen(req);
995
996 mdc_get_rpc_lock(obd->u.cli.cl_close_lock, NULL);
997 rc = ptlrpc_queue_wait(req);
998 mdc_put_rpc_lock(obd->u.cli.cl_close_lock, NULL);
999
1000 if (rc == -ESTALE) {
1001 /**
1002 * it can be allowed error after 3633 if open or setattr were
1003 * committed and server failed before close was sent.
1004 * Let's check if mod exists and return no error in that case
1005 */
1006 if (mod) {
1007 LASSERT(mod->mod_open_req != NULL);
1008 if (mod->mod_open_req->rq_committed)
1009 rc = 0;
1010 }
1011 }
1012
1013 if (mod) {
1014 if (rc != 0)
1015 mod->mod_close_req = NULL;
1016 LASSERT(mod->mod_open_req != NULL);
1017 mdc_free_open(mod);
1018
1019 /* Since now, mod is accessed through setattr req only,
1020 * thus DW req does not keep a reference on mod anymore. */
1021 obd_mod_put(mod);
1022 }
1023
1024 mdc_close_handle_reply(req, op_data, rc);
1025 ptlrpc_req_finished(req);
1026 return rc;
1027 }
1028
1029
1030 int mdc_readpage(struct obd_export *exp, struct md_op_data *op_data,
1031 struct page **pages, struct ptlrpc_request **request)
1032 {
1033 struct ptlrpc_request *req;
1034 struct ptlrpc_bulk_desc *desc;
1035 int i;
1036 wait_queue_head_t waitq;
1037 int resends = 0;
1038 struct l_wait_info lwi;
1039 int rc;
1040
1041 *request = NULL;
1042 init_waitqueue_head(&waitq);
1043
1044 restart_bulk:
1045 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_READPAGE);
1046 if (req == NULL)
1047 return -ENOMEM;
1048
1049 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
1050
1051 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_READPAGE);
1052 if (rc) {
1053 ptlrpc_request_free(req);
1054 return rc;
1055 }
1056
1057 req->rq_request_portal = MDS_READPAGE_PORTAL;
1058 ptlrpc_at_set_req_timeout(req);
1059
1060 desc = ptlrpc_prep_bulk_imp(req, op_data->op_npages, 1, BULK_PUT_SINK,
1061 MDS_BULK_PORTAL);
1062 if (desc == NULL) {
1063 ptlrpc_request_free(req);
1064 return -ENOMEM;
1065 }
1066
1067 /* NB req now owns desc and will free it when it gets freed */
1068 for (i = 0; i < op_data->op_npages; i++)
1069 ptlrpc_prep_bulk_page_pin(desc, pages[i], 0, PAGE_CACHE_SIZE);
1070
1071 mdc_readdir_pack(req, op_data->op_offset,
1072 PAGE_CACHE_SIZE * op_data->op_npages,
1073 &op_data->op_fid1, op_data->op_capa1);
1074
1075 ptlrpc_request_set_replen(req);
1076 rc = ptlrpc_queue_wait(req);
1077 if (rc) {
1078 ptlrpc_req_finished(req);
1079 if (rc != -ETIMEDOUT)
1080 return rc;
1081
1082 resends++;
1083 if (!client_should_resend(resends, &exp->exp_obd->u.cli)) {
1084 CERROR("too many resend retries, returning error\n");
1085 return -EIO;
1086 }
1087 lwi = LWI_TIMEOUT_INTR(cfs_time_seconds(resends), NULL, NULL, NULL);
1088 l_wait_event(waitq, 0, &lwi);
1089
1090 goto restart_bulk;
1091 }
1092
1093 rc = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk,
1094 req->rq_bulk->bd_nob_transferred);
1095 if (rc < 0) {
1096 ptlrpc_req_finished(req);
1097 return rc;
1098 }
1099
1100 if (req->rq_bulk->bd_nob_transferred & ~LU_PAGE_MASK) {
1101 CERROR("Unexpected # bytes transferred: %d (%ld expected)\n",
1102 req->rq_bulk->bd_nob_transferred,
1103 PAGE_CACHE_SIZE * op_data->op_npages);
1104 ptlrpc_req_finished(req);
1105 return -EPROTO;
1106 }
1107
1108 *request = req;
1109 return 0;
1110 }
1111
1112 static int mdc_statfs(const struct lu_env *env,
1113 struct obd_export *exp, struct obd_statfs *osfs,
1114 __u64 max_age, __u32 flags)
1115 {
1116 struct obd_device *obd = class_exp2obd(exp);
1117 struct ptlrpc_request *req;
1118 struct obd_statfs *msfs;
1119 struct obd_import *imp = NULL;
1120 int rc;
1121
1122 /*
1123 * Since the request might also come from lprocfs, so we need
1124 * sync this with client_disconnect_export Bug15684
1125 */
1126 down_read(&obd->u.cli.cl_sem);
1127 if (obd->u.cli.cl_import)
1128 imp = class_import_get(obd->u.cli.cl_import);
1129 up_read(&obd->u.cli.cl_sem);
1130 if (!imp)
1131 return -ENODEV;
1132
1133 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_STATFS,
1134 LUSTRE_MDS_VERSION, MDS_STATFS);
1135 if (req == NULL)
1136 GOTO(output, rc = -ENOMEM);
1137
1138 ptlrpc_request_set_replen(req);
1139
1140 if (flags & OBD_STATFS_NODELAY) {
1141 /* procfs requests not want stay in wait for avoid deadlock */
1142 req->rq_no_resend = 1;
1143 req->rq_no_delay = 1;
1144 }
1145
1146 rc = ptlrpc_queue_wait(req);
1147 if (rc) {
1148 /* check connection error first */
1149 if (imp->imp_connect_error)
1150 rc = imp->imp_connect_error;
1151 GOTO(out, rc);
1152 }
1153
1154 msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
1155 if (msfs == NULL)
1156 GOTO(out, rc = -EPROTO);
1157
1158 *osfs = *msfs;
1159 out:
1160 ptlrpc_req_finished(req);
1161 output:
1162 class_import_put(imp);
1163 return rc;
1164 }
1165
1166 static int mdc_ioc_fid2path(struct obd_export *exp, struct getinfo_fid2path *gf)
1167 {
1168 __u32 keylen, vallen;
1169 void *key;
1170 int rc;
1171
1172 if (gf->gf_pathlen > PATH_MAX)
1173 return -ENAMETOOLONG;
1174 if (gf->gf_pathlen < 2)
1175 return -EOVERFLOW;
1176
1177 /* Key is KEY_FID2PATH + getinfo_fid2path description */
1178 keylen = cfs_size_round(sizeof(KEY_FID2PATH)) + sizeof(*gf);
1179 OBD_ALLOC(key, keylen);
1180 if (key == NULL)
1181 return -ENOMEM;
1182 memcpy(key, KEY_FID2PATH, sizeof(KEY_FID2PATH));
1183 memcpy(key + cfs_size_round(sizeof(KEY_FID2PATH)), gf, sizeof(*gf));
1184
1185 CDEBUG(D_IOCTL, "path get "DFID" from %llu #%d\n",
1186 PFID(&gf->gf_fid), gf->gf_recno, gf->gf_linkno);
1187
1188 if (!fid_is_sane(&gf->gf_fid))
1189 GOTO(out, rc = -EINVAL);
1190
1191 /* Val is struct getinfo_fid2path result plus path */
1192 vallen = sizeof(*gf) + gf->gf_pathlen;
1193
1194 rc = obd_get_info(NULL, exp, keylen, key, &vallen, gf, NULL);
1195 if (rc != 0 && rc != -EREMOTE)
1196 GOTO(out, rc);
1197
1198 if (vallen <= sizeof(*gf))
1199 GOTO(out, rc = -EPROTO);
1200 else if (vallen > sizeof(*gf) + gf->gf_pathlen)
1201 GOTO(out, rc = -EOVERFLOW);
1202
1203 CDEBUG(D_IOCTL, "path get "DFID" from %llu #%d\n%s\n",
1204 PFID(&gf->gf_fid), gf->gf_recno, gf->gf_linkno, gf->gf_path);
1205
1206 out:
1207 OBD_FREE(key, keylen);
1208 return rc;
1209 }
1210
1211 static int mdc_ioc_hsm_progress(struct obd_export *exp,
1212 struct hsm_progress_kernel *hpk)
1213 {
1214 struct obd_import *imp = class_exp2cliimp(exp);
1215 struct hsm_progress_kernel *req_hpk;
1216 struct ptlrpc_request *req;
1217 int rc;
1218
1219 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_PROGRESS,
1220 LUSTRE_MDS_VERSION, MDS_HSM_PROGRESS);
1221 if (req == NULL)
1222 GOTO(out, rc = -ENOMEM);
1223
1224 mdc_pack_body(req, NULL, NULL, OBD_MD_FLRMTPERM, 0, 0, 0);
1225
1226 /* Copy hsm_progress struct */
1227 req_hpk = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_PROGRESS);
1228 if (req_hpk == NULL)
1229 GOTO(out, rc = -EPROTO);
1230
1231 *req_hpk = *hpk;
1232 req_hpk->hpk_errval = lustre_errno_hton(hpk->hpk_errval);
1233
1234 ptlrpc_request_set_replen(req);
1235
1236 rc = mdc_queue_wait(req);
1237 GOTO(out, rc);
1238 out:
1239 ptlrpc_req_finished(req);
1240 return rc;
1241 }
1242
1243 static int mdc_ioc_hsm_ct_register(struct obd_import *imp, __u32 archives)
1244 {
1245 __u32 *archive_mask;
1246 struct ptlrpc_request *req;
1247 int rc;
1248
1249 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_CT_REGISTER,
1250 LUSTRE_MDS_VERSION,
1251 MDS_HSM_CT_REGISTER);
1252 if (req == NULL)
1253 GOTO(out, rc = -ENOMEM);
1254
1255 mdc_pack_body(req, NULL, NULL, OBD_MD_FLRMTPERM, 0, 0, 0);
1256
1257 /* Copy hsm_progress struct */
1258 archive_mask = req_capsule_client_get(&req->rq_pill,
1259 &RMF_MDS_HSM_ARCHIVE);
1260 if (archive_mask == NULL)
1261 GOTO(out, rc = -EPROTO);
1262
1263 *archive_mask = archives;
1264
1265 ptlrpc_request_set_replen(req);
1266
1267 rc = mdc_queue_wait(req);
1268 GOTO(out, rc);
1269 out:
1270 ptlrpc_req_finished(req);
1271 return rc;
1272 }
1273
1274 static int mdc_ioc_hsm_current_action(struct obd_export *exp,
1275 struct md_op_data *op_data)
1276 {
1277 struct hsm_current_action *hca = op_data->op_data;
1278 struct hsm_current_action *req_hca;
1279 struct ptlrpc_request *req;
1280 int rc;
1281
1282 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1283 &RQF_MDS_HSM_ACTION);
1284 if (req == NULL)
1285 return -ENOMEM;
1286
1287 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
1288
1289 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_ACTION);
1290 if (rc) {
1291 ptlrpc_request_free(req);
1292 return rc;
1293 }
1294
1295 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1,
1296 OBD_MD_FLRMTPERM, 0, op_data->op_suppgids[0], 0);
1297
1298 ptlrpc_request_set_replen(req);
1299
1300 rc = mdc_queue_wait(req);
1301 if (rc)
1302 GOTO(out, rc);
1303
1304 req_hca = req_capsule_server_get(&req->rq_pill,
1305 &RMF_MDS_HSM_CURRENT_ACTION);
1306 if (req_hca == NULL)
1307 GOTO(out, rc = -EPROTO);
1308
1309 *hca = *req_hca;
1310
1311 out:
1312 ptlrpc_req_finished(req);
1313 return rc;
1314 }
1315
1316 static int mdc_ioc_hsm_ct_unregister(struct obd_import *imp)
1317 {
1318 struct ptlrpc_request *req;
1319 int rc;
1320
1321 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_CT_UNREGISTER,
1322 LUSTRE_MDS_VERSION,
1323 MDS_HSM_CT_UNREGISTER);
1324 if (req == NULL)
1325 GOTO(out, rc = -ENOMEM);
1326
1327 mdc_pack_body(req, NULL, NULL, OBD_MD_FLRMTPERM, 0, 0, 0);
1328
1329 ptlrpc_request_set_replen(req);
1330
1331 rc = mdc_queue_wait(req);
1332 GOTO(out, rc);
1333 out:
1334 ptlrpc_req_finished(req);
1335 return rc;
1336 }
1337
1338 static int mdc_ioc_hsm_state_get(struct obd_export *exp,
1339 struct md_op_data *op_data)
1340 {
1341 struct hsm_user_state *hus = op_data->op_data;
1342 struct hsm_user_state *req_hus;
1343 struct ptlrpc_request *req;
1344 int rc;
1345
1346 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1347 &RQF_MDS_HSM_STATE_GET);
1348 if (req == NULL)
1349 return -ENOMEM;
1350
1351 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
1352
1353 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_STATE_GET);
1354 if (rc != 0) {
1355 ptlrpc_request_free(req);
1356 return rc;
1357 }
1358
1359 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1,
1360 OBD_MD_FLRMTPERM, 0, op_data->op_suppgids[0], 0);
1361
1362 ptlrpc_request_set_replen(req);
1363
1364 rc = mdc_queue_wait(req);
1365 if (rc)
1366 GOTO(out, rc);
1367
1368 req_hus = req_capsule_server_get(&req->rq_pill, &RMF_HSM_USER_STATE);
1369 if (req_hus == NULL)
1370 GOTO(out, rc = -EPROTO);
1371
1372 *hus = *req_hus;
1373
1374 out:
1375 ptlrpc_req_finished(req);
1376 return rc;
1377 }
1378
1379 static int mdc_ioc_hsm_state_set(struct obd_export *exp,
1380 struct md_op_data *op_data)
1381 {
1382 struct hsm_state_set *hss = op_data->op_data;
1383 struct hsm_state_set *req_hss;
1384 struct ptlrpc_request *req;
1385 int rc;
1386
1387 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1388 &RQF_MDS_HSM_STATE_SET);
1389 if (req == NULL)
1390 return -ENOMEM;
1391
1392 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
1393
1394 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_STATE_SET);
1395 if (rc) {
1396 ptlrpc_request_free(req);
1397 return rc;
1398 }
1399
1400 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1,
1401 OBD_MD_FLRMTPERM, 0, op_data->op_suppgids[0], 0);
1402
1403 /* Copy states */
1404 req_hss = req_capsule_client_get(&req->rq_pill, &RMF_HSM_STATE_SET);
1405 if (req_hss == NULL)
1406 GOTO(out, rc = -EPROTO);
1407 *req_hss = *hss;
1408
1409 ptlrpc_request_set_replen(req);
1410
1411 rc = mdc_queue_wait(req);
1412 GOTO(out, rc);
1413
1414 out:
1415 ptlrpc_req_finished(req);
1416 return rc;
1417 }
1418
1419 static int mdc_ioc_hsm_request(struct obd_export *exp,
1420 struct hsm_user_request *hur)
1421 {
1422 struct obd_import *imp = class_exp2cliimp(exp);
1423 struct ptlrpc_request *req;
1424 struct hsm_request *req_hr;
1425 struct hsm_user_item *req_hui;
1426 char *req_opaque;
1427 int rc;
1428
1429 req = ptlrpc_request_alloc(imp, &RQF_MDS_HSM_REQUEST);
1430 if (req == NULL)
1431 GOTO(out, rc = -ENOMEM);
1432
1433 req_capsule_set_size(&req->rq_pill, &RMF_MDS_HSM_USER_ITEM, RCL_CLIENT,
1434 hur->hur_request.hr_itemcount
1435 * sizeof(struct hsm_user_item));
1436 req_capsule_set_size(&req->rq_pill, &RMF_GENERIC_DATA, RCL_CLIENT,
1437 hur->hur_request.hr_data_len);
1438
1439 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_REQUEST);
1440 if (rc) {
1441 ptlrpc_request_free(req);
1442 return rc;
1443 }
1444
1445 mdc_pack_body(req, NULL, NULL, OBD_MD_FLRMTPERM, 0, 0, 0);
1446
1447 /* Copy hsm_request struct */
1448 req_hr = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_REQUEST);
1449 if (req_hr == NULL)
1450 GOTO(out, rc = -EPROTO);
1451 *req_hr = hur->hur_request;
1452
1453 /* Copy hsm_user_item structs */
1454 req_hui = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_USER_ITEM);
1455 if (req_hui == NULL)
1456 GOTO(out, rc = -EPROTO);
1457 memcpy(req_hui, hur->hur_user_item,
1458 hur->hur_request.hr_itemcount * sizeof(struct hsm_user_item));
1459
1460 /* Copy opaque field */
1461 req_opaque = req_capsule_client_get(&req->rq_pill, &RMF_GENERIC_DATA);
1462 if (req_opaque == NULL)
1463 GOTO(out, rc = -EPROTO);
1464 memcpy(req_opaque, hur_data(hur), hur->hur_request.hr_data_len);
1465
1466 ptlrpc_request_set_replen(req);
1467
1468 rc = mdc_queue_wait(req);
1469 GOTO(out, rc);
1470
1471 out:
1472 ptlrpc_req_finished(req);
1473 return rc;
1474 }
1475
1476 static struct kuc_hdr *changelog_kuc_hdr(char *buf, int len, int flags)
1477 {
1478 struct kuc_hdr *lh = (struct kuc_hdr *)buf;
1479
1480 LASSERT(len <= KUC_CHANGELOG_MSG_MAXSIZE);
1481
1482 lh->kuc_magic = KUC_MAGIC;
1483 lh->kuc_transport = KUC_TRANSPORT_CHANGELOG;
1484 lh->kuc_flags = flags;
1485 lh->kuc_msgtype = CL_RECORD;
1486 lh->kuc_msglen = len;
1487 return lh;
1488 }
1489
1490 #define D_CHANGELOG 0
1491
1492 struct changelog_show {
1493 __u64 cs_startrec;
1494 __u32 cs_flags;
1495 struct file *cs_fp;
1496 char *cs_buf;
1497 struct obd_device *cs_obd;
1498 };
1499
1500 static int changelog_kkuc_cb(const struct lu_env *env, struct llog_handle *llh,
1501 struct llog_rec_hdr *hdr, void *data)
1502 {
1503 struct changelog_show *cs = data;
1504 struct llog_changelog_rec *rec = (struct llog_changelog_rec *)hdr;
1505 struct kuc_hdr *lh;
1506 int len, rc;
1507
1508 if (rec->cr_hdr.lrh_type != CHANGELOG_REC) {
1509 rc = -EINVAL;
1510 CERROR("%s: not a changelog rec %x/%d: rc = %d\n",
1511 cs->cs_obd->obd_name, rec->cr_hdr.lrh_type,
1512 rec->cr.cr_type, rc);
1513 return rc;
1514 }
1515
1516 if (rec->cr.cr_index < cs->cs_startrec) {
1517 /* Skip entries earlier than what we are interested in */
1518 CDEBUG(D_CHANGELOG, "rec=%llu start=%llu\n",
1519 rec->cr.cr_index, cs->cs_startrec);
1520 return 0;
1521 }
1522
1523 CDEBUG(D_CHANGELOG, "%llu %02d%-5s %llu 0x%x t="DFID" p="DFID
1524 " %.*s\n", rec->cr.cr_index, rec->cr.cr_type,
1525 changelog_type2str(rec->cr.cr_type), rec->cr.cr_time,
1526 rec->cr.cr_flags & CLF_FLAGMASK,
1527 PFID(&rec->cr.cr_tfid), PFID(&rec->cr.cr_pfid),
1528 rec->cr.cr_namelen, changelog_rec_name(&rec->cr));
1529
1530 len = sizeof(*lh) + changelog_rec_size(&rec->cr) + rec->cr.cr_namelen;
1531
1532 /* Set up the message */
1533 lh = changelog_kuc_hdr(cs->cs_buf, len, cs->cs_flags);
1534 memcpy(lh + 1, &rec->cr, len - sizeof(*lh));
1535
1536 rc = libcfs_kkuc_msg_put(cs->cs_fp, lh);
1537 CDEBUG(D_CHANGELOG, "kucmsg fp %p len %d rc %d\n", cs->cs_fp, len,rc);
1538
1539 return rc;
1540 }
1541
1542 static int mdc_changelog_send_thread(void *csdata)
1543 {
1544 struct changelog_show *cs = csdata;
1545 struct llog_ctxt *ctxt = NULL;
1546 struct llog_handle *llh = NULL;
1547 struct kuc_hdr *kuch;
1548 int rc;
1549
1550 CDEBUG(D_CHANGELOG, "changelog to fp=%p start %llu\n",
1551 cs->cs_fp, cs->cs_startrec);
1552
1553 OBD_ALLOC(cs->cs_buf, KUC_CHANGELOG_MSG_MAXSIZE);
1554 if (cs->cs_buf == NULL)
1555 GOTO(out, rc = -ENOMEM);
1556
1557 /* Set up the remote catalog handle */
1558 ctxt = llog_get_context(cs->cs_obd, LLOG_CHANGELOG_REPL_CTXT);
1559 if (ctxt == NULL)
1560 GOTO(out, rc = -ENOENT);
1561 rc = llog_open(NULL, ctxt, &llh, NULL, CHANGELOG_CATALOG,
1562 LLOG_OPEN_EXISTS);
1563 if (rc) {
1564 CERROR("%s: fail to open changelog catalog: rc = %d\n",
1565 cs->cs_obd->obd_name, rc);
1566 GOTO(out, rc);
1567 }
1568 rc = llog_init_handle(NULL, llh, LLOG_F_IS_CAT, NULL);
1569 if (rc) {
1570 CERROR("llog_init_handle failed %d\n", rc);
1571 GOTO(out, rc);
1572 }
1573
1574 rc = llog_cat_process(NULL, llh, changelog_kkuc_cb, cs, 0, 0);
1575
1576 /* Send EOF no matter what our result */
1577 kuch = changelog_kuc_hdr(cs->cs_buf, sizeof(*kuch), cs->cs_flags);
1578 if (kuch) {
1579 kuch->kuc_msgtype = CL_EOF;
1580 libcfs_kkuc_msg_put(cs->cs_fp, kuch);
1581 }
1582
1583 out:
1584 fput(cs->cs_fp);
1585 if (llh)
1586 llog_cat_close(NULL, llh);
1587 if (ctxt)
1588 llog_ctxt_put(ctxt);
1589 if (cs->cs_buf)
1590 OBD_FREE(cs->cs_buf, KUC_CHANGELOG_MSG_MAXSIZE);
1591 OBD_FREE_PTR(cs);
1592 return rc;
1593 }
1594
1595 static int mdc_ioc_changelog_send(struct obd_device *obd,
1596 struct ioc_changelog *icc)
1597 {
1598 struct changelog_show *cs;
1599 int rc;
1600
1601 /* Freed in mdc_changelog_send_thread */
1602 OBD_ALLOC_PTR(cs);
1603 if (!cs)
1604 return -ENOMEM;
1605
1606 cs->cs_obd = obd;
1607 cs->cs_startrec = icc->icc_recno;
1608 /* matching fput in mdc_changelog_send_thread */
1609 cs->cs_fp = fget(icc->icc_id);
1610 cs->cs_flags = icc->icc_flags;
1611
1612 /*
1613 * New thread because we should return to user app before
1614 * writing into our pipe
1615 */
1616 rc = PTR_ERR(kthread_run(mdc_changelog_send_thread, cs,
1617 "mdc_clg_send_thread"));
1618 if (!IS_ERR_VALUE(rc)) {
1619 CDEBUG(D_CHANGELOG, "start changelog thread\n");
1620 return 0;
1621 }
1622
1623 CERROR("Failed to start changelog thread: %d\n", rc);
1624 OBD_FREE_PTR(cs);
1625 return rc;
1626 }
1627
1628 static int mdc_ioc_hsm_ct_start(struct obd_export *exp,
1629 struct lustre_kernelcomm *lk);
1630
1631 static int mdc_quotacheck(struct obd_device *unused, struct obd_export *exp,
1632 struct obd_quotactl *oqctl)
1633 {
1634 struct client_obd *cli = &exp->exp_obd->u.cli;
1635 struct ptlrpc_request *req;
1636 struct obd_quotactl *body;
1637 int rc;
1638
1639 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
1640 &RQF_MDS_QUOTACHECK, LUSTRE_MDS_VERSION,
1641 MDS_QUOTACHECK);
1642 if (req == NULL)
1643 return -ENOMEM;
1644
1645 body = req_capsule_client_get(&req->rq_pill, &RMF_OBD_QUOTACTL);
1646 *body = *oqctl;
1647
1648 ptlrpc_request_set_replen(req);
1649
1650 /* the next poll will find -ENODATA, that means quotacheck is
1651 * going on */
1652 cli->cl_qchk_stat = -ENODATA;
1653 rc = ptlrpc_queue_wait(req);
1654 if (rc)
1655 cli->cl_qchk_stat = rc;
1656 ptlrpc_req_finished(req);
1657 return rc;
1658 }
1659
1660 static int mdc_quota_poll_check(struct obd_export *exp,
1661 struct if_quotacheck *qchk)
1662 {
1663 struct client_obd *cli = &exp->exp_obd->u.cli;
1664 int rc;
1665
1666 qchk->obd_uuid = cli->cl_target_uuid;
1667 memcpy(qchk->obd_type, LUSTRE_MDS_NAME, strlen(LUSTRE_MDS_NAME));
1668
1669 rc = cli->cl_qchk_stat;
1670 /* the client is not the previous one */
1671 if (rc == CL_NOT_QUOTACHECKED)
1672 rc = -EINTR;
1673 return rc;
1674 }
1675
1676 static int mdc_quotactl(struct obd_device *unused, struct obd_export *exp,
1677 struct obd_quotactl *oqctl)
1678 {
1679 struct ptlrpc_request *req;
1680 struct obd_quotactl *oqc;
1681 int rc;
1682
1683 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
1684 &RQF_MDS_QUOTACTL, LUSTRE_MDS_VERSION,
1685 MDS_QUOTACTL);
1686 if (req == NULL)
1687 return -ENOMEM;
1688
1689 oqc = req_capsule_client_get(&req->rq_pill, &RMF_OBD_QUOTACTL);
1690 *oqc = *oqctl;
1691
1692 ptlrpc_request_set_replen(req);
1693 ptlrpc_at_set_req_timeout(req);
1694 req->rq_no_resend = 1;
1695
1696 rc = ptlrpc_queue_wait(req);
1697 if (rc)
1698 CERROR("ptlrpc_queue_wait failed, rc: %d\n", rc);
1699
1700 if (req->rq_repmsg) {
1701 oqc = req_capsule_server_get(&req->rq_pill, &RMF_OBD_QUOTACTL);
1702 if (oqc) {
1703 *oqctl = *oqc;
1704 } else if (!rc) {
1705 CERROR ("Can't unpack obd_quotactl\n");
1706 rc = -EPROTO;
1707 }
1708 } else if (!rc) {
1709 CERROR("Can't unpack obd_quotactl\n");
1710 rc = -EPROTO;
1711 }
1712 ptlrpc_req_finished(req);
1713
1714 return rc;
1715 }
1716
1717 static int mdc_ioc_swap_layouts(struct obd_export *exp,
1718 struct md_op_data *op_data)
1719 {
1720 LIST_HEAD(cancels);
1721 struct ptlrpc_request *req;
1722 int rc, count;
1723 struct mdc_swap_layouts *msl, *payload;
1724
1725 msl = op_data->op_data;
1726
1727 /* When the MDT will get the MDS_SWAP_LAYOUTS RPC the
1728 * first thing it will do is to cancel the 2 layout
1729 * locks hold by this client.
1730 * So the client must cancel its layout locks on the 2 fids
1731 * with the request RPC to avoid extra RPC round trips
1732 */
1733 count = mdc_resource_get_unused(exp, &op_data->op_fid1, &cancels,
1734 LCK_CR, MDS_INODELOCK_LAYOUT);
1735 count += mdc_resource_get_unused(exp, &op_data->op_fid2, &cancels,
1736 LCK_CR, MDS_INODELOCK_LAYOUT);
1737
1738 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1739 &RQF_MDS_SWAP_LAYOUTS);
1740 if (req == NULL) {
1741 ldlm_lock_list_put(&cancels, l_bl_ast, count);
1742 return -ENOMEM;
1743 }
1744
1745 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
1746 mdc_set_capa_size(req, &RMF_CAPA2, op_data->op_capa2);
1747
1748 rc = mdc_prep_elc_req(exp, req, MDS_SWAP_LAYOUTS, &cancels, count);
1749 if (rc) {
1750 ptlrpc_request_free(req);
1751 return rc;
1752 }
1753
1754 mdc_swap_layouts_pack(req, op_data);
1755
1756 payload = req_capsule_client_get(&req->rq_pill, &RMF_SWAP_LAYOUTS);
1757 LASSERT(payload);
1758
1759 *payload = *msl;
1760
1761 ptlrpc_request_set_replen(req);
1762
1763 rc = ptlrpc_queue_wait(req);
1764 if (rc)
1765 GOTO(out, rc);
1766
1767 out:
1768 ptlrpc_req_finished(req);
1769 return rc;
1770 }
1771
1772 static int mdc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
1773 void *karg, void *uarg)
1774 {
1775 struct obd_device *obd = exp->exp_obd;
1776 struct obd_ioctl_data *data = karg;
1777 struct obd_import *imp = obd->u.cli.cl_import;
1778 struct llog_ctxt *ctxt;
1779 int rc;
1780
1781 if (!try_module_get(THIS_MODULE)) {
1782 CERROR("Can't get module. Is it alive?");
1783 return -EINVAL;
1784 }
1785 switch (cmd) {
1786 case OBD_IOC_CHANGELOG_SEND:
1787 rc = mdc_ioc_changelog_send(obd, karg);
1788 GOTO(out, rc);
1789 case OBD_IOC_CHANGELOG_CLEAR: {
1790 struct ioc_changelog *icc = karg;
1791 struct changelog_setinfo cs =
1792 {.cs_recno = icc->icc_recno, .cs_id = icc->icc_id};
1793 rc = obd_set_info_async(NULL, exp, strlen(KEY_CHANGELOG_CLEAR),
1794 KEY_CHANGELOG_CLEAR, sizeof(cs), &cs,
1795 NULL);
1796 GOTO(out, rc);
1797 }
1798 case OBD_IOC_FID2PATH:
1799 rc = mdc_ioc_fid2path(exp, karg);
1800 GOTO(out, rc);
1801 case LL_IOC_HSM_CT_START:
1802 rc = mdc_ioc_hsm_ct_start(exp, karg);
1803 /* ignore if it was already registered on this MDS. */
1804 if (rc == -EEXIST)
1805 rc = 0;
1806 GOTO(out, rc);
1807 case LL_IOC_HSM_PROGRESS:
1808 rc = mdc_ioc_hsm_progress(exp, karg);
1809 GOTO(out, rc);
1810 case LL_IOC_HSM_STATE_GET:
1811 rc = mdc_ioc_hsm_state_get(exp, karg);
1812 GOTO(out, rc);
1813 case LL_IOC_HSM_STATE_SET:
1814 rc = mdc_ioc_hsm_state_set(exp, karg);
1815 GOTO(out, rc);
1816 case LL_IOC_HSM_ACTION:
1817 rc = mdc_ioc_hsm_current_action(exp, karg);
1818 GOTO(out, rc);
1819 case LL_IOC_HSM_REQUEST:
1820 rc = mdc_ioc_hsm_request(exp, karg);
1821 GOTO(out, rc);
1822 case OBD_IOC_CLIENT_RECOVER:
1823 rc = ptlrpc_recover_import(imp, data->ioc_inlbuf1, 0);
1824 if (rc < 0)
1825 GOTO(out, rc);
1826 GOTO(out, rc = 0);
1827 case IOC_OSC_SET_ACTIVE:
1828 rc = ptlrpc_set_import_active(imp, data->ioc_offset);
1829 GOTO(out, rc);
1830 case OBD_IOC_PARSE: {
1831 ctxt = llog_get_context(exp->exp_obd, LLOG_CONFIG_REPL_CTXT);
1832 rc = class_config_parse_llog(NULL, ctxt, data->ioc_inlbuf1,
1833 NULL);
1834 llog_ctxt_put(ctxt);
1835 GOTO(out, rc);
1836 }
1837 case OBD_IOC_LLOG_INFO:
1838 case OBD_IOC_LLOG_PRINT: {
1839 ctxt = llog_get_context(obd, LLOG_CONFIG_REPL_CTXT);
1840 rc = llog_ioctl(NULL, ctxt, cmd, data);
1841 llog_ctxt_put(ctxt);
1842 GOTO(out, rc);
1843 }
1844 case OBD_IOC_POLL_QUOTACHECK:
1845 rc = mdc_quota_poll_check(exp, (struct if_quotacheck *)karg);
1846 GOTO(out, rc);
1847 case OBD_IOC_PING_TARGET:
1848 rc = ptlrpc_obd_ping(obd);
1849 GOTO(out, rc);
1850 /*
1851 * Normally IOC_OBD_STATFS, OBD_IOC_QUOTACTL iocontrol are handled by
1852 * LMV instead of MDC. But when the cluster is upgraded from 1.8,
1853 * there'd be no LMV layer thus we might be called here. Eventually
1854 * this code should be removed.
1855 * bz20731, LU-592.
1856 */
1857 case IOC_OBD_STATFS: {
1858 struct obd_statfs stat_buf = {0};
1859
1860 if (*((__u32 *) data->ioc_inlbuf2) != 0)
1861 GOTO(out, rc = -ENODEV);
1862
1863 /* copy UUID */
1864 if (copy_to_user(data->ioc_pbuf2, obd2cli_tgt(obd),
1865 min((int) data->ioc_plen2,
1866 (int) sizeof(struct obd_uuid))))
1867 GOTO(out, rc = -EFAULT);
1868
1869 rc = mdc_statfs(NULL, obd->obd_self_export, &stat_buf,
1870 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
1871 0);
1872 if (rc != 0)
1873 GOTO(out, rc);
1874
1875 if (copy_to_user(data->ioc_pbuf1, &stat_buf,
1876 min((int) data->ioc_plen1,
1877 (int) sizeof(stat_buf))))
1878 GOTO(out, rc = -EFAULT);
1879
1880 GOTO(out, rc = 0);
1881 }
1882 case OBD_IOC_QUOTACTL: {
1883 struct if_quotactl *qctl = karg;
1884 struct obd_quotactl *oqctl;
1885
1886 OBD_ALLOC_PTR(oqctl);
1887 if (oqctl == NULL)
1888 GOTO(out, rc = -ENOMEM);
1889
1890 QCTL_COPY(oqctl, qctl);
1891 rc = obd_quotactl(exp, oqctl);
1892 if (rc == 0) {
1893 QCTL_COPY(qctl, oqctl);
1894 qctl->qc_valid = QC_MDTIDX;
1895 qctl->obd_uuid = obd->u.cli.cl_target_uuid;
1896 }
1897
1898 OBD_FREE_PTR(oqctl);
1899 GOTO(out, rc);
1900 }
1901 case LL_IOC_GET_CONNECT_FLAGS:
1902 if (copy_to_user(uarg, exp_connect_flags_ptr(exp),
1903 sizeof(*exp_connect_flags_ptr(exp))))
1904 GOTO(out, rc = -EFAULT);
1905
1906 GOTO(out, rc = 0);
1907 case LL_IOC_LOV_SWAP_LAYOUTS:
1908 rc = mdc_ioc_swap_layouts(exp, karg);
1909 GOTO(out, rc);
1910 default:
1911 CERROR("unrecognised ioctl: cmd = %#x\n", cmd);
1912 GOTO(out, rc = -ENOTTY);
1913 }
1914 out:
1915 module_put(THIS_MODULE);
1916
1917 return rc;
1918 }
1919
1920 int mdc_get_info_rpc(struct obd_export *exp,
1921 obd_count keylen, void *key,
1922 int vallen, void *val)
1923 {
1924 struct obd_import *imp = class_exp2cliimp(exp);
1925 struct ptlrpc_request *req;
1926 char *tmp;
1927 int rc = -EINVAL;
1928
1929 req = ptlrpc_request_alloc(imp, &RQF_MDS_GET_INFO);
1930 if (req == NULL)
1931 return -ENOMEM;
1932
1933 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_KEY,
1934 RCL_CLIENT, keylen);
1935 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_VALLEN,
1936 RCL_CLIENT, sizeof(__u32));
1937
1938 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GET_INFO);
1939 if (rc) {
1940 ptlrpc_request_free(req);
1941 return rc;
1942 }
1943
1944 tmp = req_capsule_client_get(&req->rq_pill, &RMF_GETINFO_KEY);
1945 memcpy(tmp, key, keylen);
1946 tmp = req_capsule_client_get(&req->rq_pill, &RMF_GETINFO_VALLEN);
1947 memcpy(tmp, &vallen, sizeof(__u32));
1948
1949 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_VAL,
1950 RCL_SERVER, vallen);
1951 ptlrpc_request_set_replen(req);
1952
1953 rc = ptlrpc_queue_wait(req);
1954 /* -EREMOTE means the get_info result is partial, and it needs to
1955 * continue on another MDT, see fid2path part in lmv_iocontrol */
1956 if (rc == 0 || rc == -EREMOTE) {
1957 tmp = req_capsule_server_get(&req->rq_pill, &RMF_GETINFO_VAL);
1958 memcpy(val, tmp, vallen);
1959 if (ptlrpc_rep_need_swab(req)) {
1960 if (KEY_IS(KEY_FID2PATH))
1961 lustre_swab_fid2path(val);
1962 }
1963 }
1964 ptlrpc_req_finished(req);
1965
1966 return rc;
1967 }
1968
1969 static void lustre_swab_hai(struct hsm_action_item *h)
1970 {
1971 __swab32s(&h->hai_len);
1972 __swab32s(&h->hai_action);
1973 lustre_swab_lu_fid(&h->hai_fid);
1974 lustre_swab_lu_fid(&h->hai_dfid);
1975 __swab64s(&h->hai_cookie);
1976 __swab64s(&h->hai_extent.offset);
1977 __swab64s(&h->hai_extent.length);
1978 __swab64s(&h->hai_gid);
1979 }
1980
1981 static void lustre_swab_hal(struct hsm_action_list *h)
1982 {
1983 struct hsm_action_item *hai;
1984 int i;
1985
1986 __swab32s(&h->hal_version);
1987 __swab32s(&h->hal_count);
1988 __swab32s(&h->hal_archive_id);
1989 __swab64s(&h->hal_flags);
1990 hai = hai_zero(h);
1991 for (i = 0; i < h->hal_count; i++, hai = hai_next(hai))
1992 lustre_swab_hai(hai);
1993 }
1994
1995 static void lustre_swab_kuch(struct kuc_hdr *l)
1996 {
1997 __swab16s(&l->kuc_magic);
1998 /* __u8 l->kuc_transport */
1999 __swab16s(&l->kuc_msgtype);
2000 __swab16s(&l->kuc_msglen);
2001 }
2002
2003 static int mdc_ioc_hsm_ct_start(struct obd_export *exp,
2004 struct lustre_kernelcomm *lk)
2005 {
2006 struct obd_import *imp = class_exp2cliimp(exp);
2007 __u32 archive = lk->lk_data;
2008 int rc = 0;
2009
2010 if (lk->lk_group != KUC_GRP_HSM) {
2011 CERROR("Bad copytool group %d\n", lk->lk_group);
2012 return -EINVAL;
2013 }
2014
2015 CDEBUG(D_HSM, "CT start r%d w%d u%d g%d f%#x\n", lk->lk_rfd, lk->lk_wfd,
2016 lk->lk_uid, lk->lk_group, lk->lk_flags);
2017
2018 if (lk->lk_flags & LK_FLG_STOP) {
2019 /* Unregister with the coordinator */
2020 rc = mdc_ioc_hsm_ct_unregister(imp);
2021 } else {
2022 rc = mdc_ioc_hsm_ct_register(imp, archive);
2023 }
2024
2025 return rc;
2026 }
2027
2028 /**
2029 * Send a message to any listening copytools
2030 * @param val KUC message (kuc_hdr + hsm_action_list)
2031 * @param len total length of message
2032 */
2033 static int mdc_hsm_copytool_send(int len, void *val)
2034 {
2035 struct kuc_hdr *lh = (struct kuc_hdr *)val;
2036 struct hsm_action_list *hal = (struct hsm_action_list *)(lh + 1);
2037 int rc;
2038
2039 if (len < sizeof(*lh) + sizeof(*hal)) {
2040 CERROR("Short HSM message %d < %d\n", len,
2041 (int) (sizeof(*lh) + sizeof(*hal)));
2042 return -EPROTO;
2043 }
2044 if (lh->kuc_magic == __swab16(KUC_MAGIC)) {
2045 lustre_swab_kuch(lh);
2046 lustre_swab_hal(hal);
2047 } else if (lh->kuc_magic != KUC_MAGIC) {
2048 CERROR("Bad magic %x!=%x\n", lh->kuc_magic, KUC_MAGIC);
2049 return -EPROTO;
2050 }
2051
2052 CDEBUG(D_HSM, " Received message mg=%x t=%d m=%d l=%d actions=%d "
2053 "on %s\n",
2054 lh->kuc_magic, lh->kuc_transport, lh->kuc_msgtype,
2055 lh->kuc_msglen, hal->hal_count, hal->hal_fsname);
2056
2057 /* Broadcast to HSM listeners */
2058 rc = libcfs_kkuc_group_put(KUC_GRP_HSM, lh);
2059
2060 return rc;
2061 }
2062
2063 /**
2064 * callback function passed to kuc for re-registering each HSM copytool
2065 * running on MDC, after MDT shutdown/recovery.
2066 * @param data archive id served by the copytool
2067 * @param cb_arg callback argument (obd_import)
2068 */
2069 static int mdc_hsm_ct_reregister(__u32 data, void *cb_arg)
2070 {
2071 struct obd_import *imp = (struct obd_import *)cb_arg;
2072 __u32 archive = data;
2073 int rc;
2074
2075 CDEBUG(D_HA, "recover copytool registration to MDT (archive=%#x)\n",
2076 archive);
2077 rc = mdc_ioc_hsm_ct_register(imp, archive);
2078
2079 /* ignore error if the copytool is already registered */
2080 return ((rc != 0) && (rc != -EEXIST)) ? rc : 0;
2081 }
2082
2083 /**
2084 * Re-establish all kuc contexts with MDT
2085 * after MDT shutdown/recovery.
2086 */
2087 static int mdc_kuc_reregister(struct obd_import *imp)
2088 {
2089 /* re-register HSM agents */
2090 return libcfs_kkuc_group_foreach(KUC_GRP_HSM, mdc_hsm_ct_reregister,
2091 (void *)imp);
2092 }
2093
2094 int mdc_set_info_async(const struct lu_env *env,
2095 struct obd_export *exp,
2096 obd_count keylen, void *key,
2097 obd_count vallen, void *val,
2098 struct ptlrpc_request_set *set)
2099 {
2100 struct obd_import *imp = class_exp2cliimp(exp);
2101 int rc;
2102
2103 if (KEY_IS(KEY_READ_ONLY)) {
2104 if (vallen != sizeof(int))
2105 return -EINVAL;
2106
2107 spin_lock(&imp->imp_lock);
2108 if (*((int *)val)) {
2109 imp->imp_connect_flags_orig |= OBD_CONNECT_RDONLY;
2110 imp->imp_connect_data.ocd_connect_flags |=
2111 OBD_CONNECT_RDONLY;
2112 } else {
2113 imp->imp_connect_flags_orig &= ~OBD_CONNECT_RDONLY;
2114 imp->imp_connect_data.ocd_connect_flags &=
2115 ~OBD_CONNECT_RDONLY;
2116 }
2117 spin_unlock(&imp->imp_lock);
2118
2119 rc = do_set_info_async(imp, MDS_SET_INFO, LUSTRE_MDS_VERSION,
2120 keylen, key, vallen, val, set);
2121 return rc;
2122 }
2123 if (KEY_IS(KEY_SPTLRPC_CONF)) {
2124 sptlrpc_conf_client_adapt(exp->exp_obd);
2125 return 0;
2126 }
2127 if (KEY_IS(KEY_FLUSH_CTX)) {
2128 sptlrpc_import_flush_my_ctx(imp);
2129 return 0;
2130 }
2131 if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
2132 rc = do_set_info_async(imp, MDS_SET_INFO, LUSTRE_MDS_VERSION,
2133 keylen, key, vallen, val, set);
2134 return rc;
2135 }
2136 if (KEY_IS(KEY_HSM_COPYTOOL_SEND)) {
2137 rc = mdc_hsm_copytool_send(vallen, val);
2138 return rc;
2139 }
2140
2141 CERROR("Unknown key %s\n", (char *)key);
2142 return -EINVAL;
2143 }
2144
2145 int mdc_get_info(const struct lu_env *env, struct obd_export *exp,
2146 __u32 keylen, void *key, __u32 *vallen, void *val,
2147 struct lov_stripe_md *lsm)
2148 {
2149 int rc = -EINVAL;
2150
2151 if (KEY_IS(KEY_MAX_EASIZE)) {
2152 int mdsize, *max_easize;
2153
2154 if (*vallen != sizeof(int))
2155 return -EINVAL;
2156 mdsize = *(int *)val;
2157 if (mdsize > exp->exp_obd->u.cli.cl_max_mds_easize)
2158 exp->exp_obd->u.cli.cl_max_mds_easize = mdsize;
2159 max_easize = val;
2160 *max_easize = exp->exp_obd->u.cli.cl_max_mds_easize;
2161 return 0;
2162 } else if (KEY_IS(KEY_DEFAULT_EASIZE)) {
2163 int *default_easize;
2164
2165 if (*vallen != sizeof(int))
2166 return -EINVAL;
2167 default_easize = val;
2168 *default_easize = exp->exp_obd->u.cli.cl_default_mds_easize;
2169 return 0;
2170 } else if (KEY_IS(KEY_MAX_COOKIESIZE)) {
2171 int mdsize, *max_cookiesize;
2172
2173 if (*vallen != sizeof(int))
2174 return -EINVAL;
2175 mdsize = *(int *)val;
2176 if (mdsize > exp->exp_obd->u.cli.cl_max_mds_cookiesize)
2177 exp->exp_obd->u.cli.cl_max_mds_cookiesize = mdsize;
2178 max_cookiesize = val;
2179 *max_cookiesize = exp->exp_obd->u.cli.cl_max_mds_cookiesize;
2180 return 0;
2181 } else if (KEY_IS(KEY_DEFAULT_COOKIESIZE)) {
2182 int *default_cookiesize;
2183
2184 if (*vallen != sizeof(int))
2185 return -EINVAL;
2186 default_cookiesize = val;
2187 *default_cookiesize =
2188 exp->exp_obd->u.cli.cl_default_mds_cookiesize;
2189 return 0;
2190 } else if (KEY_IS(KEY_CONN_DATA)) {
2191 struct obd_import *imp = class_exp2cliimp(exp);
2192 struct obd_connect_data *data = val;
2193
2194 if (*vallen != sizeof(*data))
2195 return -EINVAL;
2196
2197 *data = imp->imp_connect_data;
2198 return 0;
2199 } else if (KEY_IS(KEY_TGT_COUNT)) {
2200 *((int *)val) = 1;
2201 return 0;
2202 }
2203
2204 rc = mdc_get_info_rpc(exp, keylen, key, *vallen, val);
2205
2206 return rc;
2207 }
2208
2209 static int mdc_pin(struct obd_export *exp, const struct lu_fid *fid,
2210 struct obd_capa *oc, struct obd_client_handle *handle,
2211 int flags)
2212 {
2213 struct ptlrpc_request *req;
2214 struct mdt_body *body;
2215 int rc;
2216
2217 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_PIN);
2218 if (req == NULL)
2219 return -ENOMEM;
2220
2221 mdc_set_capa_size(req, &RMF_CAPA1, oc);
2222
2223 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_PIN);
2224 if (rc) {
2225 ptlrpc_request_free(req);
2226 return rc;
2227 }
2228
2229 mdc_pack_body(req, fid, oc, 0, 0, -1, flags);
2230
2231 ptlrpc_request_set_replen(req);
2232
2233 mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
2234 rc = ptlrpc_queue_wait(req);
2235 mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
2236 if (rc) {
2237 CERROR("Pin failed: %d\n", rc);
2238 GOTO(err_out, rc);
2239 }
2240
2241 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
2242 if (body == NULL)
2243 GOTO(err_out, rc = -EPROTO);
2244
2245 handle->och_fh = body->handle;
2246 handle->och_magic = OBD_CLIENT_HANDLE_MAGIC;
2247
2248 handle->och_mod = obd_mod_alloc();
2249 if (handle->och_mod == NULL) {
2250 DEBUG_REQ(D_ERROR, req, "can't allocate md_open_data");
2251 GOTO(err_out, rc = -ENOMEM);
2252 }
2253 handle->och_mod->mod_open_req = req; /* will be dropped by unpin */
2254
2255 return 0;
2256
2257 err_out:
2258 ptlrpc_req_finished(req);
2259 return rc;
2260 }
2261
2262 static int mdc_unpin(struct obd_export *exp, struct obd_client_handle *handle,
2263 int flag)
2264 {
2265 struct ptlrpc_request *req;
2266 struct mdt_body *body;
2267 int rc;
2268
2269 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), &RQF_MDS_UNPIN,
2270 LUSTRE_MDS_VERSION, MDS_UNPIN);
2271 if (req == NULL)
2272 return -ENOMEM;
2273
2274 body = req_capsule_client_get(&req->rq_pill, &RMF_MDT_BODY);
2275 body->handle = handle->och_fh;
2276 body->flags = flag;
2277
2278 ptlrpc_request_set_replen(req);
2279
2280 mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
2281 rc = ptlrpc_queue_wait(req);
2282 mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
2283
2284 if (rc != 0)
2285 CERROR("Unpin failed: %d\n", rc);
2286
2287 ptlrpc_req_finished(req);
2288 ptlrpc_req_finished(handle->och_mod->mod_open_req);
2289
2290 obd_mod_put(handle->och_mod);
2291 return rc;
2292 }
2293
2294 int mdc_sync(struct obd_export *exp, const struct lu_fid *fid,
2295 struct obd_capa *oc, struct ptlrpc_request **request)
2296 {
2297 struct ptlrpc_request *req;
2298 int rc;
2299
2300 *request = NULL;
2301 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_SYNC);
2302 if (req == NULL)
2303 return -ENOMEM;
2304
2305 mdc_set_capa_size(req, &RMF_CAPA1, oc);
2306
2307 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_SYNC);
2308 if (rc) {
2309 ptlrpc_request_free(req);
2310 return rc;
2311 }
2312
2313 mdc_pack_body(req, fid, oc, 0, 0, -1, 0);
2314
2315 ptlrpc_request_set_replen(req);
2316
2317 rc = ptlrpc_queue_wait(req);
2318 if (rc)
2319 ptlrpc_req_finished(req);
2320 else
2321 *request = req;
2322 return rc;
2323 }
2324
2325 static int mdc_import_event(struct obd_device *obd, struct obd_import *imp,
2326 enum obd_import_event event)
2327 {
2328 int rc = 0;
2329
2330 LASSERT(imp->imp_obd == obd);
2331
2332 switch (event) {
2333 case IMP_EVENT_DISCON: {
2334 #if 0
2335 /* XXX Pass event up to OBDs stack. used only for FLD now */
2336 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_DISCON, NULL);
2337 #endif
2338 break;
2339 }
2340 case IMP_EVENT_INACTIVE: {
2341 struct client_obd *cli = &obd->u.cli;
2342 /*
2343 * Flush current sequence to make client obtain new one
2344 * from server in case of disconnect/reconnect.
2345 */
2346 if (cli->cl_seq != NULL)
2347 seq_client_flush(cli->cl_seq);
2348
2349 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_INACTIVE, NULL);
2350 break;
2351 }
2352 case IMP_EVENT_INVALIDATE: {
2353 struct ldlm_namespace *ns = obd->obd_namespace;
2354
2355 ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY);
2356
2357 break;
2358 }
2359 case IMP_EVENT_ACTIVE:
2360 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVE, NULL);
2361 /* redo the kuc registration after reconnecting */
2362 if (rc == 0)
2363 rc = mdc_kuc_reregister(imp);
2364 break;
2365 case IMP_EVENT_OCD:
2366 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_OCD, NULL);
2367 break;
2368 case IMP_EVENT_DEACTIVATE:
2369 case IMP_EVENT_ACTIVATE:
2370 break;
2371 default:
2372 CERROR("Unknown import event %x\n", event);
2373 LBUG();
2374 }
2375 return rc;
2376 }
2377
2378 int mdc_fid_alloc(struct obd_export *exp, struct lu_fid *fid,
2379 struct md_op_data *op_data)
2380 {
2381 struct client_obd *cli = &exp->exp_obd->u.cli;
2382 struct lu_client_seq *seq = cli->cl_seq;
2383
2384 return seq_client_alloc_fid(NULL, seq, fid);
2385 }
2386
2387 struct obd_uuid *mdc_get_uuid(struct obd_export *exp) {
2388 struct client_obd *cli = &exp->exp_obd->u.cli;
2389 return &cli->cl_target_uuid;
2390 }
2391
2392 /**
2393 * Determine whether the lock can be canceled before replaying it during
2394 * recovery, non zero value will be return if the lock can be canceled,
2395 * or zero returned for not
2396 */
2397 static int mdc_cancel_for_recovery(struct ldlm_lock *lock)
2398 {
2399 if (lock->l_resource->lr_type != LDLM_IBITS)
2400 return 0;
2401
2402 /* FIXME: if we ever get into a situation where there are too many
2403 * opened files with open locks on a single node, then we really
2404 * should replay these open locks to reget it */
2405 if (lock->l_policy_data.l_inodebits.bits & MDS_INODELOCK_OPEN)
2406 return 0;
2407
2408 return 1;
2409 }
2410
2411 static int mdc_resource_inode_free(struct ldlm_resource *res)
2412 {
2413 if (res->lr_lvb_inode)
2414 res->lr_lvb_inode = NULL;
2415
2416 return 0;
2417 }
2418
2419 struct ldlm_valblock_ops inode_lvbo = {
2420 .lvbo_free = mdc_resource_inode_free,
2421 };
2422
2423 static int mdc_setup(struct obd_device *obd, struct lustre_cfg *cfg)
2424 {
2425 struct client_obd *cli = &obd->u.cli;
2426 struct lprocfs_static_vars lvars = { 0 };
2427 int rc;
2428
2429 OBD_ALLOC(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
2430 if (!cli->cl_rpc_lock)
2431 return -ENOMEM;
2432 mdc_init_rpc_lock(cli->cl_rpc_lock);
2433
2434 ptlrpcd_addref();
2435
2436 OBD_ALLOC(cli->cl_close_lock, sizeof (*cli->cl_close_lock));
2437 if (!cli->cl_close_lock)
2438 GOTO(err_rpc_lock, rc = -ENOMEM);
2439 mdc_init_rpc_lock(cli->cl_close_lock);
2440
2441 rc = client_obd_setup(obd, cfg);
2442 if (rc)
2443 GOTO(err_close_lock, rc);
2444 lprocfs_mdc_init_vars(&lvars);
2445 lprocfs_obd_setup(obd, lvars.obd_vars);
2446 sptlrpc_lprocfs_cliobd_attach(obd);
2447 ptlrpc_lprocfs_register_obd(obd);
2448
2449 ns_register_cancel(obd->obd_namespace, mdc_cancel_for_recovery);
2450
2451 obd->obd_namespace->ns_lvbo = &inode_lvbo;
2452
2453 rc = obd_llog_init(obd, &obd->obd_olg, obd, NULL);
2454 if (rc) {
2455 mdc_cleanup(obd);
2456 CERROR("failed to setup llogging subsystems\n");
2457 }
2458
2459 return rc;
2460
2461 err_close_lock:
2462 OBD_FREE(cli->cl_close_lock, sizeof (*cli->cl_close_lock));
2463 err_rpc_lock:
2464 OBD_FREE(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
2465 ptlrpcd_decref();
2466 return rc;
2467 }
2468
2469 /* Initialize the default and maximum LOV EA and cookie sizes. This allows
2470 * us to make MDS RPCs with large enough reply buffers to hold a default
2471 * sized EA and cookie without having to calculate this (via a call into the
2472 * LOV + OSCs) each time we make an RPC. The maximum size is also tracked
2473 * but not used to avoid wastefully vmalloc()'ing large reply buffers when
2474 * a large number of stripes is possible. If a larger reply buffer is
2475 * required it will be reallocated in the ptlrpc layer due to overflow.
2476 */
2477 static int mdc_init_ea_size(struct obd_export *exp, int easize,
2478 int def_easize, int cookiesize, int def_cookiesize)
2479 {
2480 struct obd_device *obd = exp->exp_obd;
2481 struct client_obd *cli = &obd->u.cli;
2482
2483 if (cli->cl_max_mds_easize < easize)
2484 cli->cl_max_mds_easize = easize;
2485
2486 if (cli->cl_default_mds_easize < def_easize)
2487 cli->cl_default_mds_easize = def_easize;
2488
2489 if (cli->cl_max_mds_cookiesize < cookiesize)
2490 cli->cl_max_mds_cookiesize = cookiesize;
2491
2492 if (cli->cl_default_mds_cookiesize < def_cookiesize)
2493 cli->cl_default_mds_cookiesize = def_cookiesize;
2494
2495 return 0;
2496 }
2497
2498 static int mdc_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
2499 {
2500 int rc = 0;
2501
2502 switch (stage) {
2503 case OBD_CLEANUP_EARLY:
2504 break;
2505 case OBD_CLEANUP_EXPORTS:
2506 /* Failsafe, ok if racy */
2507 if (obd->obd_type->typ_refcnt <= 1)
2508 libcfs_kkuc_group_rem(0, KUC_GRP_HSM);
2509
2510 obd_cleanup_client_import(obd);
2511 ptlrpc_lprocfs_unregister_obd(obd);
2512 lprocfs_obd_cleanup(obd);
2513
2514 rc = obd_llog_finish(obd, 0);
2515 if (rc != 0)
2516 CERROR("failed to cleanup llogging subsystems\n");
2517 break;
2518 }
2519 return rc;
2520 }
2521
2522 static int mdc_cleanup(struct obd_device *obd)
2523 {
2524 struct client_obd *cli = &obd->u.cli;
2525
2526 OBD_FREE(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
2527 OBD_FREE(cli->cl_close_lock, sizeof (*cli->cl_close_lock));
2528
2529 ptlrpcd_decref();
2530
2531 return client_obd_cleanup(obd);
2532 }
2533
2534
2535 static int mdc_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
2536 struct obd_device *tgt, int *index)
2537 {
2538 struct llog_ctxt *ctxt;
2539 int rc;
2540
2541 LASSERT(olg == &obd->obd_olg);
2542
2543 rc = llog_setup(NULL, obd, olg, LLOG_CHANGELOG_REPL_CTXT, tgt,
2544 &llog_client_ops);
2545 if (rc)
2546 return rc;
2547
2548 ctxt = llog_group_get_ctxt(olg, LLOG_CHANGELOG_REPL_CTXT);
2549 llog_initiator_connect(ctxt);
2550 llog_ctxt_put(ctxt);
2551
2552 return 0;
2553 }
2554
2555 static int mdc_llog_finish(struct obd_device *obd, int count)
2556 {
2557 struct llog_ctxt *ctxt;
2558
2559 ctxt = llog_get_context(obd, LLOG_CHANGELOG_REPL_CTXT);
2560 if (ctxt)
2561 llog_cleanup(NULL, ctxt);
2562
2563 return 0;
2564 }
2565
2566 static int mdc_process_config(struct obd_device *obd, obd_count len, void *buf)
2567 {
2568 struct lustre_cfg *lcfg = buf;
2569 struct lprocfs_static_vars lvars = { 0 };
2570 int rc = 0;
2571
2572 lprocfs_mdc_init_vars(&lvars);
2573 switch (lcfg->lcfg_command) {
2574 default:
2575 rc = class_process_proc_param(PARAM_MDC, lvars.obd_vars,
2576 lcfg, obd);
2577 if (rc > 0)
2578 rc = 0;
2579 break;
2580 }
2581 return(rc);
2582 }
2583
2584
2585 /* get remote permission for current user on fid */
2586 int mdc_get_remote_perm(struct obd_export *exp, const struct lu_fid *fid,
2587 struct obd_capa *oc, __u32 suppgid,
2588 struct ptlrpc_request **request)
2589 {
2590 struct ptlrpc_request *req;
2591 int rc;
2592
2593 LASSERT(client_is_remote(exp));
2594
2595 *request = NULL;
2596 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_GETATTR);
2597 if (req == NULL)
2598 return -ENOMEM;
2599
2600 mdc_set_capa_size(req, &RMF_CAPA1, oc);
2601
2602 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR);
2603 if (rc) {
2604 ptlrpc_request_free(req);
2605 return rc;
2606 }
2607
2608 mdc_pack_body(req, fid, oc, OBD_MD_FLRMTPERM, 0, suppgid, 0);
2609
2610 req_capsule_set_size(&req->rq_pill, &RMF_ACL, RCL_SERVER,
2611 sizeof(struct mdt_remote_perm));
2612
2613 ptlrpc_request_set_replen(req);
2614
2615 rc = ptlrpc_queue_wait(req);
2616 if (rc)
2617 ptlrpc_req_finished(req);
2618 else
2619 *request = req;
2620 return rc;
2621 }
2622
2623 static int mdc_interpret_renew_capa(const struct lu_env *env,
2624 struct ptlrpc_request *req, void *args,
2625 int status)
2626 {
2627 struct mdc_renew_capa_args *ra = args;
2628 struct mdt_body *body = NULL;
2629 struct lustre_capa *capa;
2630
2631 if (status)
2632 GOTO(out, capa = ERR_PTR(status));
2633
2634 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
2635 if (body == NULL)
2636 GOTO(out, capa = ERR_PTR(-EFAULT));
2637
2638 if ((body->valid & OBD_MD_FLOSSCAPA) == 0)
2639 GOTO(out, capa = ERR_PTR(-ENOENT));
2640
2641 capa = req_capsule_server_get(&req->rq_pill, &RMF_CAPA2);
2642 if (!capa)
2643 GOTO(out, capa = ERR_PTR(-EFAULT));
2644 out:
2645 ra->ra_cb(ra->ra_oc, capa);
2646 return 0;
2647 }
2648
2649 static int mdc_renew_capa(struct obd_export *exp, struct obd_capa *oc,
2650 renew_capa_cb_t cb)
2651 {
2652 struct ptlrpc_request *req;
2653 struct mdc_renew_capa_args *ra;
2654
2655 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), &RQF_MDS_GETATTR,
2656 LUSTRE_MDS_VERSION, MDS_GETATTR);
2657 if (req == NULL)
2658 return -ENOMEM;
2659
2660 /* NB, OBD_MD_FLOSSCAPA is set here, but it doesn't necessarily mean the
2661 * capa to renew is oss capa.
2662 */
2663 mdc_pack_body(req, &oc->c_capa.lc_fid, oc, OBD_MD_FLOSSCAPA, 0, -1, 0);
2664 ptlrpc_request_set_replen(req);
2665
2666 CLASSERT(sizeof(*ra) <= sizeof(req->rq_async_args));
2667 ra = ptlrpc_req_async_args(req);
2668 ra->ra_oc = oc;
2669 ra->ra_cb = cb;
2670 req->rq_interpret_reply = mdc_interpret_renew_capa;
2671 ptlrpcd_add_req(req, PDL_POLICY_LOCAL, -1);
2672 return 0;
2673 }
2674
2675 struct obd_ops mdc_obd_ops = {
2676 .o_owner = THIS_MODULE,
2677 .o_setup = mdc_setup,
2678 .o_precleanup = mdc_precleanup,
2679 .o_cleanup = mdc_cleanup,
2680 .o_add_conn = client_import_add_conn,
2681 .o_del_conn = client_import_del_conn,
2682 .o_connect = client_connect_import,
2683 .o_disconnect = client_disconnect_export,
2684 .o_iocontrol = mdc_iocontrol,
2685 .o_set_info_async = mdc_set_info_async,
2686 .o_statfs = mdc_statfs,
2687 .o_pin = mdc_pin,
2688 .o_unpin = mdc_unpin,
2689 .o_fid_init = client_fid_init,
2690 .o_fid_fini = client_fid_fini,
2691 .o_fid_alloc = mdc_fid_alloc,
2692 .o_import_event = mdc_import_event,
2693 .o_llog_init = mdc_llog_init,
2694 .o_llog_finish = mdc_llog_finish,
2695 .o_get_info = mdc_get_info,
2696 .o_process_config = mdc_process_config,
2697 .o_get_uuid = mdc_get_uuid,
2698 .o_quotactl = mdc_quotactl,
2699 .o_quotacheck = mdc_quotacheck
2700 };
2701
2702 struct md_ops mdc_md_ops = {
2703 .m_getstatus = mdc_getstatus,
2704 .m_null_inode = mdc_null_inode,
2705 .m_find_cbdata = mdc_find_cbdata,
2706 .m_close = mdc_close,
2707 .m_create = mdc_create,
2708 .m_done_writing = mdc_done_writing,
2709 .m_enqueue = mdc_enqueue,
2710 .m_getattr = mdc_getattr,
2711 .m_getattr_name = mdc_getattr_name,
2712 .m_intent_lock = mdc_intent_lock,
2713 .m_link = mdc_link,
2714 .m_is_subdir = mdc_is_subdir,
2715 .m_rename = mdc_rename,
2716 .m_setattr = mdc_setattr,
2717 .m_setxattr = mdc_setxattr,
2718 .m_getxattr = mdc_getxattr,
2719 .m_sync = mdc_sync,
2720 .m_readpage = mdc_readpage,
2721 .m_unlink = mdc_unlink,
2722 .m_cancel_unused = mdc_cancel_unused,
2723 .m_init_ea_size = mdc_init_ea_size,
2724 .m_set_lock_data = mdc_set_lock_data,
2725 .m_lock_match = mdc_lock_match,
2726 .m_get_lustre_md = mdc_get_lustre_md,
2727 .m_free_lustre_md = mdc_free_lustre_md,
2728 .m_set_open_replay_data = mdc_set_open_replay_data,
2729 .m_clear_open_replay_data = mdc_clear_open_replay_data,
2730 .m_renew_capa = mdc_renew_capa,
2731 .m_unpack_capa = mdc_unpack_capa,
2732 .m_get_remote_perm = mdc_get_remote_perm,
2733 .m_intent_getattr_async = mdc_intent_getattr_async,
2734 .m_revalidate_lock = mdc_revalidate_lock
2735 };
2736
2737 int __init mdc_init(void)
2738 {
2739 int rc;
2740 struct lprocfs_static_vars lvars = { 0 };
2741 lprocfs_mdc_init_vars(&lvars);
2742
2743 rc = class_register_type(&mdc_obd_ops, &mdc_md_ops, lvars.module_vars,
2744 LUSTRE_MDC_NAME, NULL);
2745 return rc;
2746 }
2747
2748 static void /*__exit*/ mdc_exit(void)
2749 {
2750 class_unregister_type(LUSTRE_MDC_NAME);
2751 }
2752
2753 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
2754 MODULE_DESCRIPTION("Lustre Metadata Client");
2755 MODULE_LICENSE("GPL");
2756
2757 module_init(mdc_init);
2758 module_exit(mdc_exit);
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