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[fs/lustre-release.git] / lustre / mdc / mdc_request.c
1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2  * vim:expandtab:shiftwidth=8:tabstop=8:
3  *
4  * GPL HEADER START
5  *
6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License version 2 only,
10  * as published by the Free Software Foundation.
11  *
12  * This program is distributed in the hope that it will be useful, but
13  * WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * General Public License version 2 for more details (a copy is included
16  * in the LICENSE file that accompanied this code).
17  *
18  * You should have received a copy of the GNU General Public License
19  * version 2 along with this program; If not, see
20  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
21  *
22  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23  * CA 95054 USA or visit www.sun.com if you need additional information or
24  * have any questions.
25  *
26  * GPL HEADER END
27  */
28 /*
29  * Copyright  2008 Sun Microsystems, Inc. All rights reserved
30  * Use is subject to license terms.
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 #ifndef EXPORT_SYMTAB
38 # define EXPORT_SYMTAB
39 #endif
40 #define DEBUG_SUBSYSTEM S_MDC
41
42 #ifdef __KERNEL__
43 # include <linux/module.h>
44 # include <linux/pagemap.h>
45 # include <linux/miscdevice.h>
46 # include <linux/init.h>
47 #else
48 # include <liblustre.h>
49 #endif
50
51 #include <lustre_acl.h>
52 #include <obd_class.h>
53 #include <lustre_dlm.h>
54 #include <lustre_fid.h>
55 #include <md_object.h>
56 #include <lprocfs_status.h>
57 #include <lustre_param.h>
58 #include "mdc_internal.h"
59 #include <lustre/lustre_idl.h>
60
61 #define REQUEST_MINOR 244
62
63 static quota_interface_t *quota_interface;
64 extern quota_interface_t mdc_quota_interface;
65
66 static int mdc_cleanup(struct obd_device *obd);
67
68 int mdc_unpack_capa(struct obd_export *exp, struct ptlrpc_request *req,
69                     const struct req_msg_field *field, struct obd_capa **oc)
70 {
71         struct lustre_capa *capa;
72         struct obd_capa *c;
73         ENTRY;
74
75         /* swabbed already in mdc_enqueue */
76         capa = req_capsule_server_get(&req->rq_pill, field);
77         if (capa == NULL)
78                 RETURN(-EPROTO);
79
80         c = alloc_capa(CAPA_SITE_CLIENT);
81         if (IS_ERR(c)) {
82                 CDEBUG(D_INFO, "alloc capa failed!\n");
83                 RETURN(PTR_ERR(c));
84         } else {
85                 c->c_capa = *capa;
86                 *oc = c;
87                 RETURN(0);
88         }
89 }
90
91 /* Helper that implements most of mdc_getstatus and signal_completed_replay. */
92 /* XXX this should become mdc_get_info("key"), sending MDS_GET_INFO RPC */
93 static int send_getstatus(struct obd_import *imp, struct lu_fid *rootfid,
94                           struct obd_capa **pc, int level, int msg_flags)
95 {
96         struct ptlrpc_request *req;
97         struct mdt_body       *body;
98         int                    rc;
99         ENTRY;
100
101         req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_GETSTATUS,
102                                         LUSTRE_MDS_VERSION, MDS_GETSTATUS);
103         if (req == NULL)
104                 RETURN(-ENOMEM);
105
106         mdc_pack_body(req, NULL, NULL, 0, 0, -1, 0);
107         lustre_msg_add_flags(req->rq_reqmsg, msg_flags);
108         req->rq_send_state = level;
109
110         ptlrpc_request_set_replen(req);
111
112         rc = ptlrpc_queue_wait(req);
113         if (rc)
114                 GOTO(out, rc);
115
116         body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
117         if (body == NULL)
118                 GOTO(out, rc = -EPROTO);
119
120         if (body->valid & OBD_MD_FLMDSCAPA) {
121                 rc = mdc_unpack_capa(NULL, req, &RMF_CAPA1, pc);
122                 if (rc)
123                         GOTO(out, rc);
124         }
125
126         *rootfid = body->fid1;
127         CDEBUG(D_NET,
128                "root fid="DFID", last_committed="LPU64", last_xid="LPU64"\n",
129                PFID(rootfid),
130                lustre_msg_get_last_committed(req->rq_repmsg),
131                lustre_msg_get_last_xid(req->rq_repmsg));
132         EXIT;
133 out:
134         ptlrpc_req_finished(req);
135         return rc;
136 }
137
138 /* This should be mdc_get_info("rootfid") */
139 int mdc_getstatus(struct obd_export *exp, struct lu_fid *rootfid,
140                   struct obd_capa **pc)
141 {
142         return send_getstatus(class_exp2cliimp(exp), rootfid, pc,
143                               LUSTRE_IMP_FULL, 0);
144 }
145
146 /*
147  * This function now is known to always saying that it will receive 4 buffers
148  * from server. Even for cases when acl_size and md_size is zero, RPC header
149  * will contain 4 fields and RPC itself will contain zero size fields. This is
150  * because mdt_getattr*() _always_ returns 4 fields, but if acl is not needed
151  * and thus zero, it shrinks it, making zero size. The same story about
152  * md_size. And this is course of problem when client waits for smaller number
153  * of fields. This issue will be fixed later when client gets aware of RPC
154  * layouts.  --umka
155  */
156 static int mdc_getattr_common(struct obd_export *exp,
157                               struct ptlrpc_request *req)
158 {
159         struct req_capsule *pill = &req->rq_pill;
160         struct mdt_body    *body;
161         void               *eadata;
162         int                 rc;
163         ENTRY;
164
165         /* Request message already built. */
166         rc = ptlrpc_queue_wait(req);
167         if (rc != 0)
168                 RETURN(rc);
169
170         /* sanity check for the reply */
171         body = req_capsule_server_get(pill, &RMF_MDT_BODY);
172         if (body == NULL)
173                 RETURN(-EPROTO);
174
175         CDEBUG(D_NET, "mode: %o\n", body->mode);
176
177         if (body->eadatasize != 0) {
178                 eadata = req_capsule_server_sized_get(pill, &RMF_MDT_MD,
179                                                       body->eadatasize);
180                 if (eadata == NULL)
181                         RETURN(-EPROTO);
182         }
183
184         if (body->valid & OBD_MD_FLRMTPERM) {
185                 struct mdt_remote_perm *perm;
186
187                 LASSERT(client_is_remote(exp));
188                 perm = req_capsule_server_swab_get(pill, &RMF_ACL,
189                                                 lustre_swab_mdt_remote_perm);
190                 if (perm == NULL)
191                         RETURN(-EPROTO);
192         }
193
194         if (body->valid & OBD_MD_FLMDSCAPA) {
195                 struct lustre_capa *capa;
196                 capa = req_capsule_server_get(pill, &RMF_CAPA1);
197                 if (capa == NULL)
198                         RETURN(-EPROTO);
199         }
200
201         RETURN(0);
202 }
203
204 int mdc_getattr(struct obd_export *exp, const struct lu_fid *fid,
205                 struct obd_capa *oc, obd_valid valid, int ea_size,
206                 struct ptlrpc_request **request)
207 {
208         struct ptlrpc_request *req;
209         int                    rc;
210         ENTRY;
211
212         *request = NULL;
213         req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_GETATTR);
214         if (req == NULL)
215                 RETURN(-ENOMEM);
216
217         mdc_set_capa_size(req, &RMF_CAPA1, oc);
218
219         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR);
220         if (rc) {
221                 ptlrpc_request_free(req);
222                 RETURN(rc);
223         }
224
225         /* MDS_BFLAG_EXT_FLAGS: request "new" flags(bug 9486) */
226         mdc_pack_body(req, fid, oc, valid, ea_size, -1, MDS_BFLAG_EXT_FLAGS);
227
228         req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER, ea_size);
229         if (valid & OBD_MD_FLRMTPERM) {
230                 LASSERT(client_is_remote(exp));
231                 req_capsule_set_size(&req->rq_pill, &RMF_ACL, RCL_SERVER,
232                                      sizeof(struct mdt_remote_perm));
233         }
234         ptlrpc_request_set_replen(req);
235
236         rc = mdc_getattr_common(exp, req);
237         if (rc)
238                 ptlrpc_req_finished(req);
239         else
240                 *request = req;
241         RETURN(rc);
242 }
243
244 int mdc_getattr_name(struct obd_export *exp, const struct lu_fid *fid,
245                      struct obd_capa *oc, const char *filename, int namelen,
246                      obd_valid valid, int ea_size, __u32 suppgid,
247                      struct ptlrpc_request **request)
248 {
249         struct ptlrpc_request *req;
250         int                    rc;
251         ENTRY;
252
253         *request = NULL;
254         req = ptlrpc_request_alloc(class_exp2cliimp(exp),
255                                    &RQF_MDS_GETATTR_NAME);
256         if (req == NULL)
257                 RETURN(-ENOMEM);
258
259         mdc_set_capa_size(req, &RMF_CAPA1, oc);
260         req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT, namelen);
261
262         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR_NAME);
263         if (rc) {
264                 ptlrpc_request_free(req);
265                 RETURN(rc);
266         }
267
268         /* MDS_BFLAG_EXT_FLAGS: request "new" flags(bug 9486) */
269         mdc_pack_body(req, fid, oc, valid, ea_size, suppgid,
270                       MDS_BFLAG_EXT_FLAGS);
271
272         if (filename) {
273                 char *name = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
274                 LASSERT(strnlen(filename, namelen) == namelen - 1);
275                 memcpy(name, filename, namelen);
276         }
277
278         req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER, ea_size);
279         ptlrpc_request_set_replen(req);
280
281         rc = mdc_getattr_common(exp, req);
282         if (rc)
283                 ptlrpc_req_finished(req);
284         else
285                 *request = req;
286         RETURN(rc);
287 }
288
289 static int mdc_is_subdir(struct obd_export *exp,
290                          const struct lu_fid *pfid,
291                          const struct lu_fid *cfid,
292                          struct ptlrpc_request **request)
293 {
294         struct ptlrpc_request  *req;
295         int                     rc;
296
297         ENTRY;
298
299         *request = NULL;
300         req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
301                                         &RQF_MDS_IS_SUBDIR, LUSTRE_MDS_VERSION,
302                                         MDS_IS_SUBDIR);
303         if (req == NULL)
304                 RETURN(-ENOMEM);
305
306         mdc_is_subdir_pack(req, pfid, cfid, 0);
307         ptlrpc_request_set_replen(req);
308
309         rc = ptlrpc_queue_wait(req);
310         if (rc && rc != -EREMOTE)
311                 ptlrpc_req_finished(req);
312         else
313                 *request = req;
314         RETURN(rc);
315 }
316
317 static int mdc_xattr_common(struct obd_export *exp,const struct req_format *fmt,
318                             const struct lu_fid *fid,
319                             struct obd_capa *oc, int opcode, obd_valid valid,
320                             const char *xattr_name, const char *input,
321                             int input_size, int output_size, int flags,
322                             __u32 suppgid, struct ptlrpc_request **request)
323 {
324         struct ptlrpc_request *req;
325         int   xattr_namelen = 0;
326         char *tmp;
327         int   rc;
328         ENTRY;
329
330         *request = NULL;
331         req = ptlrpc_request_alloc(class_exp2cliimp(exp), fmt);
332         if (req == NULL)
333                 RETURN(-ENOMEM);
334
335         mdc_set_capa_size(req, &RMF_CAPA1, oc);
336         if (xattr_name) {
337                 xattr_namelen = strlen(xattr_name) + 1;
338                 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
339                                      xattr_namelen);
340         }
341         if (input_size) {
342                 LASSERT(input);
343                 req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_CLIENT,
344                                      input_size);
345         }
346
347         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, opcode);
348         if (rc) {
349                 ptlrpc_request_free(req);
350                 RETURN(rc);
351         }
352
353         if (opcode == MDS_REINT) {
354                 struct mdt_rec_setxattr *rec;
355
356                 CLASSERT(sizeof(struct mdt_rec_setxattr) ==
357                          sizeof(struct mdt_rec_reint));
358                 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
359                 rec->sx_opcode = REINT_SETXATTR;
360                 /* TODO:
361                  *  cfs_curproc_fs{u,g}id() should replace
362                  *  current->fs{u,g}id for portability.
363                  */
364                 rec->sx_fsuid  = current->fsuid;
365                 rec->sx_fsgid  = current->fsgid;
366                 rec->sx_cap    = cfs_curproc_cap_pack();
367                 rec->sx_suppgid1 = suppgid;
368                 rec->sx_suppgid2 = -1;
369                 rec->sx_fid    = *fid;
370                 rec->sx_valid  = valid | OBD_MD_FLCTIME;
371                 rec->sx_time   = cfs_time_current_sec();
372                 rec->sx_size   = output_size;
373                 rec->sx_flags  = flags;
374
375                 mdc_pack_capa(req, &RMF_CAPA1, oc);
376         } else {
377                 mdc_pack_body(req, fid, oc, valid, output_size, suppgid, flags);
378         }
379
380         if (xattr_name) {
381                 tmp = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
382                 memcpy(tmp, xattr_name, xattr_namelen);
383         }
384         if (input_size) {
385                 tmp = req_capsule_client_get(&req->rq_pill, &RMF_EADATA);
386                 memcpy(tmp, input, input_size);
387         }
388
389         if (req_capsule_has_field(&req->rq_pill, &RMF_EADATA, RCL_SERVER))
390                 req_capsule_set_size(&req->rq_pill, &RMF_EADATA,
391                                      RCL_SERVER, output_size);
392         ptlrpc_request_set_replen(req);
393
394         /* make rpc */
395         if (opcode == MDS_REINT)
396                 mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
397
398         rc = ptlrpc_queue_wait(req);
399
400         if (opcode == MDS_REINT)
401                 mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
402
403         if (rc)
404                 ptlrpc_req_finished(req);
405         else
406                 *request = req;
407         RETURN(rc);
408 }
409
410 int mdc_setxattr(struct obd_export *exp, const struct lu_fid *fid,
411                  struct obd_capa *oc, obd_valid valid, const char *xattr_name,
412                  const char *input, int input_size, int output_size,
413                  int flags, __u32 suppgid, struct ptlrpc_request **request)
414 {
415         return mdc_xattr_common(exp, &RQF_MDS_REINT_SETXATTR,
416                                 fid, oc, MDS_REINT, valid, xattr_name,
417                                 input, input_size, output_size, flags,
418                                 suppgid, request);
419 }
420
421 int mdc_getxattr(struct obd_export *exp, const struct lu_fid *fid,
422                  struct obd_capa *oc, obd_valid valid, const char *xattr_name,
423                  const char *input, int input_size, int output_size,
424                  int flags, struct ptlrpc_request **request)
425 {
426         return mdc_xattr_common(exp, &RQF_MDS_GETXATTR,
427                                 fid, oc, MDS_GETXATTR, valid, xattr_name,
428                                 input, input_size, output_size, flags,
429                                 -1, request);
430 }
431
432 #ifdef CONFIG_FS_POSIX_ACL
433 static int mdc_unpack_acl(struct ptlrpc_request *req, struct lustre_md *md)
434 {
435         struct req_capsule     *pill = &req->rq_pill;
436         struct mdt_body        *body = md->body;
437         struct posix_acl       *acl;
438         void                   *buf;
439         int                     rc;
440         ENTRY;
441
442         if (!body->aclsize)
443                 RETURN(0);
444
445         buf = req_capsule_server_sized_get(pill, &RMF_ACL, body->aclsize);
446
447         if (!buf)
448                 RETURN(-EPROTO);
449
450         acl = posix_acl_from_xattr(buf, body->aclsize);
451         if (IS_ERR(acl)) {
452                 rc = PTR_ERR(acl);
453                 CERROR("convert xattr to acl: %d\n", rc);
454                 RETURN(rc);
455         }
456
457         rc = posix_acl_valid(acl);
458         if (rc) {
459                 CERROR("validate acl: %d\n", rc);
460                 posix_acl_release(acl);
461                 RETURN(rc);
462         }
463
464         md->posix_acl = acl;
465         RETURN(0);
466 }
467 #else
468 #define mdc_unpack_acl(req, md) 0
469 #endif
470
471 int mdc_get_lustre_md(struct obd_export *exp, struct ptlrpc_request *req,
472                       struct obd_export *dt_exp, struct obd_export *md_exp,
473                       struct lustre_md *md)
474 {
475         struct req_capsule *pill = &req->rq_pill;
476         int rc;
477         ENTRY;
478
479         LASSERT(md);
480         memset(md, 0, sizeof(*md));
481
482         md->body = req_capsule_server_get(pill, &RMF_MDT_BODY);
483         LASSERT(md->body != NULL);
484
485         if (md->body->valid & OBD_MD_FLEASIZE) {
486                 int lmmsize;
487                 struct lov_mds_md *lmm;
488
489                 if (!S_ISREG(md->body->mode)) {
490                         CDEBUG(D_INFO, "OBD_MD_FLEASIZE set, should be a "
491                                "regular file, but is not\n");
492                         GOTO(out, rc = -EPROTO);
493                 }
494
495                 if (md->body->eadatasize == 0) {
496                         CDEBUG(D_INFO, "OBD_MD_FLEASIZE set, "
497                                "but eadatasize 0\n");
498                         GOTO(out, rc = -EPROTO);
499                 }
500                 lmmsize = md->body->eadatasize;
501                 lmm = req_capsule_server_sized_get(pill, &RMF_MDT_MD, lmmsize);
502                 if (!lmm)
503                         GOTO(out, rc = -EPROTO);
504
505                 rc = obd_unpackmd(dt_exp, &md->lsm, lmm, lmmsize);
506                 if (rc < 0)
507                         GOTO(out, rc);
508
509                 if (rc < sizeof(*md->lsm)) {
510                         CDEBUG(D_INFO, "lsm size too small: "
511                                "rc < sizeof (*md->lsm) (%d < %d)\n",
512                                rc, (int)sizeof(*md->lsm));
513                         GOTO(out, rc = -EPROTO);
514                 }
515
516         } else if (md->body->valid & OBD_MD_FLDIREA) {
517                 int lmvsize;
518                 struct lov_mds_md *lmv;
519
520                 if(!S_ISDIR(md->body->mode)) {
521                         CDEBUG(D_INFO, "OBD_MD_FLDIREA set, should be a "
522                                "directory, but is not\n");
523                         GOTO(out, rc = -EPROTO);
524                 }
525
526                 if (md->body->eadatasize == 0) {
527                         CDEBUG(D_INFO, "OBD_MD_FLDIREA is set, "
528                                "but eadatasize 0\n");
529                         RETURN(-EPROTO);
530                 }
531                 if (md->body->valid & OBD_MD_MEA) {
532                         lmvsize = md->body->eadatasize;
533                         lmv = req_capsule_server_sized_get(pill, &RMF_MDT_MD,
534                                                            lmvsize);
535                         if (!lmv)
536                                 GOTO(out, rc = -EPROTO);
537
538                         rc = obd_unpackmd(md_exp, (void *)&md->mea, lmv,
539                                           lmvsize);
540                         if (rc < 0)
541                                 GOTO(out, rc);
542
543                         if (rc < sizeof(*md->mea)) {
544                                 CDEBUG(D_INFO, "size too small:  "
545                                        "rc < sizeof(*md->mea) (%d < %d)\n",
546                                         rc, (int)sizeof(*md->mea));
547                                 GOTO(out, rc = -EPROTO);
548                         }
549                 }
550         }
551         rc = 0;
552
553         if (md->body->valid & OBD_MD_FLRMTPERM) {
554                 /* remote permission */
555                 LASSERT(client_is_remote(exp));
556                 md->remote_perm = req_capsule_server_swab_get(pill, &RMF_ACL,
557                                                 lustre_swab_mdt_remote_perm);
558                 if (!md->remote_perm)
559                         GOTO(out, rc = -EPROTO);
560         }
561         else if (md->body->valid & OBD_MD_FLACL) {
562                 /* for ACL, it's possible that FLACL is set but aclsize is zero.
563                  * only when aclsize != 0 there's an actual segment for ACL
564                  * in reply buffer.
565                  */
566                 if (md->body->aclsize) {
567                         rc = mdc_unpack_acl(req, md);
568                         if (rc)
569                                 GOTO(out, rc);
570 #ifdef CONFIG_FS_POSIX_ACL
571                 } else {
572                         md->posix_acl = NULL;
573 #endif
574                 }
575         }
576         if (md->body->valid & OBD_MD_FLMDSCAPA) {
577                 struct obd_capa *oc = NULL;
578
579                 rc = mdc_unpack_capa(NULL, req, &RMF_CAPA1, &oc);
580                 if (rc)
581                         GOTO(out, rc);
582                 md->mds_capa = oc;
583         }
584
585         if (md->body->valid & OBD_MD_FLOSSCAPA) {
586                 struct obd_capa *oc = NULL;
587
588                 rc = mdc_unpack_capa(NULL, req, &RMF_CAPA2, &oc);
589                 if (rc)
590                         GOTO(out, rc);
591                 md->oss_capa = oc;
592         }
593
594         EXIT;
595 out:
596         if (rc) {
597                 if (md->oss_capa) {
598                         capa_put(md->oss_capa);
599                         md->oss_capa = NULL;
600                 }
601                 if (md->mds_capa) {
602                         capa_put(md->mds_capa);
603                         md->mds_capa = NULL;
604                 }
605 #ifdef CONFIG_FS_POSIX_ACL
606                 posix_acl_release(md->posix_acl);
607 #endif
608                 if (md->lsm)
609                         obd_free_memmd(dt_exp, &md->lsm);
610         }
611         return rc;
612 }
613
614 int mdc_free_lustre_md(struct obd_export *exp, struct lustre_md *md)
615 {
616         ENTRY;
617         RETURN(0);
618 }
619
620 /**
621  * Handles both OPEN and SETATTR RPCs for OPEN-CLOSE and SETATTR-DONE_WRITING
622  * RPC chains.
623  */
624 void mdc_replay_open(struct ptlrpc_request *req)
625 {
626         struct md_open_data *mod = req->rq_cb_data;
627         struct ptlrpc_request *close_req;
628         struct obd_client_handle *och;
629         struct lustre_handle old;
630         struct mdt_body *body;
631         ENTRY;
632
633         if (mod == NULL) {
634                 DEBUG_REQ(D_ERROR, req,
635                           "Can't properly replay without open data.");
636                 EXIT;
637                 return;
638         }
639
640         body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
641         LASSERT(body != NULL);
642
643         och = mod->mod_och;
644         if (och != NULL) {
645                 struct lustre_handle *file_fh;
646
647                 LASSERT(och->och_magic == OBD_CLIENT_HANDLE_MAGIC);
648
649                 file_fh = &och->och_fh;
650                 CDEBUG(D_HA, "updating handle from "LPX64" to "LPX64"\n",
651                        file_fh->cookie, body->handle.cookie);
652                 old = *file_fh;
653                 *file_fh = body->handle;
654         }
655         close_req = mod->mod_close_req;
656         if (close_req != NULL) {
657                 __u32 opc = lustre_msg_get_opc(close_req->rq_reqmsg);
658                 struct mdt_epoch *epoch;
659
660                 LASSERT(opc == MDS_CLOSE || opc == MDS_DONE_WRITING);
661                 epoch = req_capsule_client_get(&close_req->rq_pill,
662                                                &RMF_MDT_EPOCH);
663                 LASSERT(epoch);
664
665                 if (och != NULL)
666                         LASSERT(!memcmp(&old, &epoch->handle, sizeof(old)));
667                 DEBUG_REQ(D_HA, close_req, "updating close body with new fh");
668                 epoch->handle = body->handle;
669         }
670         EXIT;
671 }
672
673 void mdc_commit_open(struct ptlrpc_request *req)
674 {
675         struct md_open_data *mod = req->rq_cb_data;
676         if (mod == NULL)
677                 return;
678
679         if (mod->mod_och != NULL)
680                 mod->mod_och->och_mod = NULL;
681
682         OBD_FREE(mod, sizeof(*mod));
683         req->rq_cb_data = NULL;
684 }
685
686 int mdc_set_open_replay_data(struct obd_export *exp,
687                              struct obd_client_handle *och,
688                              struct ptlrpc_request *open_req)
689 {
690         struct md_open_data   *mod;
691         struct mdt_rec_create *rec;
692         struct mdt_body       *body;
693         struct obd_import     *imp = open_req->rq_import;
694         ENTRY;
695
696         if (!open_req->rq_replay)
697                 RETURN(0);
698
699         rec = req_capsule_client_get(&open_req->rq_pill, &RMF_REC_REINT);
700         body = req_capsule_server_get(&open_req->rq_pill, &RMF_MDT_BODY);
701         LASSERT(rec != NULL);
702         /* Incoming message in my byte order (it's been swabbed). */
703         /* Outgoing messages always in my byte order. */
704         LASSERT(body != NULL);
705
706         /* Only if the import is replayable, we set replay_open data */
707         if (och && imp->imp_replayable) {
708                 OBD_ALLOC_PTR(mod);
709                 if (mod == NULL) {
710                         DEBUG_REQ(D_ERROR, open_req,
711                                   "Can't allocate md_open_data");
712                         RETURN(0);
713                 }
714
715                 spin_lock(&open_req->rq_lock);
716                 och->och_mod = mod;
717                 mod->mod_och = och;
718                 mod->mod_open_req = open_req;
719                 open_req->rq_cb_data = mod;
720                 open_req->rq_commit_cb = mdc_commit_open;
721                 spin_unlock(&open_req->rq_lock);
722         }
723
724         rec->cr_fid2 = body->fid1;
725         rec->cr_ioepoch = body->ioepoch;
726         rec->cr_old_handle.cookie = body->handle.cookie;
727         open_req->rq_replay_cb = mdc_replay_open;
728         if (!fid_is_sane(&body->fid1)) {
729                 DEBUG_REQ(D_ERROR, open_req, "Saving replay request with "
730                           "insane fid");
731                 LBUG();
732         }
733
734         DEBUG_REQ(D_RPCTRACE, open_req, "Set up open replay data");
735         RETURN(0);
736 }
737
738 int mdc_clear_open_replay_data(struct obd_export *exp,
739                                struct obd_client_handle *och)
740 {
741         struct md_open_data *mod = och->och_mod;
742         ENTRY;
743
744         /*
745          * Don't free the structure now (it happens in mdc_commit_open(), after
746          * we're sure we won't need to fix up the close request in the future),
747          * but make sure that replay doesn't poke at the och, which is about to
748          * be freed.
749          */
750         LASSERT(mod != LP_POISON);
751         if (mod != NULL)
752                 mod->mod_och = NULL;
753
754         och->och_mod = NULL;
755         RETURN(0);
756 }
757
758 int mdc_close(struct obd_export *exp, struct md_op_data *op_data,
759               struct md_open_data *mod, struct ptlrpc_request **request)
760 {
761         struct obd_device     *obd = class_exp2obd(exp);
762         struct ptlrpc_request *req;
763         int                    rc;
764         ENTRY;
765
766         *request = NULL;
767         req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_CLOSE);
768         if (req == NULL)
769                 RETURN(-ENOMEM);
770
771         mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
772
773         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_CLOSE);
774         if (rc) {
775                 ptlrpc_request_free(req);
776                 RETURN(rc);
777         }
778
779         /* To avoid a livelock (bug 7034), we need to send CLOSE RPCs to a
780          * portal whose threads are not taking any DLM locks and are therefore
781          * always progressing */
782         req->rq_request_portal = MDS_READPAGE_PORTAL;
783         ptlrpc_at_set_req_timeout(req);
784
785         /* Ensure that this close's handle is fixed up during replay. */
786         if (likely(mod != NULL)) {
787                 LASSERTF(mod->mod_open_req->rq_type != LI_POISON,
788                          "POISONED open %p!\n", mod->mod_open_req);
789
790                 mod->mod_close_req = req;
791                 DEBUG_REQ(D_HA, mod->mod_open_req, "matched open");
792                 /* We no longer want to preserve this open for replay even
793                  * though the open was committed. b=3632, b=3633 */
794                 spin_lock(&mod->mod_open_req->rq_lock);
795                 mod->mod_open_req->rq_replay = 0;
796                 spin_unlock(&mod->mod_open_req->rq_lock);
797         } else {
798                  CDEBUG(D_HA, "couldn't find open req; expecting close error\n");
799         }
800
801         mdc_close_pack(req, op_data);
802
803         req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
804                              obd->u.cli.cl_max_mds_easize);
805         req_capsule_set_size(&req->rq_pill, &RMF_LOGCOOKIES, RCL_SERVER,
806                              obd->u.cli.cl_max_mds_cookiesize);
807
808         ptlrpc_request_set_replen(req);
809
810         mdc_get_rpc_lock(obd->u.cli.cl_close_lock, NULL);
811         rc = ptlrpc_queue_wait(req);
812         mdc_put_rpc_lock(obd->u.cli.cl_close_lock, NULL);
813
814         if (req->rq_repmsg == NULL) {
815                 CDEBUG(D_RPCTRACE, "request failed to send: %p, %d\n", req,
816                        req->rq_status);
817                 if (rc == 0)
818                         rc = req->rq_status ?: -EIO;
819         } else if (rc == 0 || rc == -EAGAIN) {
820                 struct mdt_body *body;
821
822                 rc = lustre_msg_get_status(req->rq_repmsg);
823                 if (lustre_msg_get_type(req->rq_repmsg) == PTL_RPC_MSG_ERR) {
824                         DEBUG_REQ(D_ERROR, req, "type == PTL_RPC_MSG_ERR, err "
825                                   "= %d", rc);
826                         if (rc > 0)
827                                 rc = -rc;
828                 }
829                 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
830                 if (body == NULL)
831                         rc = -EPROTO;
832         }
833
834         if (rc != 0 && mod)
835                  mod->mod_close_req = NULL;
836
837         *request = req;
838         RETURN(rc);
839 }
840
841 int mdc_done_writing(struct obd_export *exp, struct md_op_data *op_data,
842                      struct md_open_data *mod)
843 {
844         struct obd_device     *obd = class_exp2obd(exp);
845         struct ptlrpc_request *req;
846         int                    rc;
847         ENTRY;
848
849         req = ptlrpc_request_alloc(class_exp2cliimp(exp),
850                                    &RQF_MDS_DONE_WRITING);
851         if (req == NULL)
852                 RETURN(-ENOMEM);
853
854         mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
855         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_DONE_WRITING);
856         if (rc) {
857                 ptlrpc_request_free(req);
858                 RETURN(rc);
859         }
860
861         if (mod != NULL) {
862                 LASSERTF(mod->mod_open_req->rq_type != LI_POISON,
863                          "POISONED setattr %p!\n", mod->mod_open_req);
864
865                 mod->mod_close_req = req;
866                 DEBUG_REQ(D_HA, mod->mod_open_req, "matched setattr");
867                 /* We no longer want to preserve this open for replay even
868                  * though the open was committed. b=3632, b=3633 */
869                 spin_lock(&mod->mod_open_req->rq_lock);
870                 mod->mod_open_req->rq_replay = 0;
871                 spin_unlock(&mod->mod_open_req->rq_lock);
872         }
873
874         mdc_close_pack(req, op_data);
875         ptlrpc_request_set_replen(req);
876
877         mdc_get_rpc_lock(obd->u.cli.cl_close_lock, NULL);
878         rc = ptlrpc_queue_wait(req);
879         mdc_put_rpc_lock(obd->u.cli.cl_close_lock, NULL);
880
881         ptlrpc_req_finished(req);
882         RETURN(rc);
883 }
884
885 #ifdef HAVE_SPLIT_SUPPORT
886 int mdc_sendpage(struct obd_export *exp, const struct lu_fid *fid,
887                  const struct page *page, int offset)
888 {
889         struct ptlrpc_request   *req;
890         struct ptlrpc_bulk_desc *desc;
891         int                      rc;
892         ENTRY;
893
894         req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_WRITEPAGE);
895         if (req == NULL)
896                 RETURN(-ENOMEM);
897
898         /* FIXME: capa doesn't support split yet */
899         mdc_set_capa_size(req, &RMF_CAPA1, NULL);
900
901         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_WRITEPAGE);
902         if (rc) {
903                 ptlrpc_request_free(req);
904                 RETURN(rc);
905         }
906
907         req->rq_request_portal = MDS_READPAGE_PORTAL;
908         ptlrpc_at_set_req_timeout(req);
909
910         desc = ptlrpc_prep_bulk_imp(req, 1, BULK_GET_SOURCE, MDS_BULK_PORTAL);
911         if (desc == NULL)
912                 GOTO(out, rc = -ENOMEM);
913
914         /* NB req now owns desc and will free it when it gets freed. */
915         ptlrpc_prep_bulk_page(desc, (struct page *)page, 0, offset);
916         mdc_readdir_pack(req, 0, offset, fid, NULL);
917
918         ptlrpc_request_set_replen(req);
919         rc = ptlrpc_queue_wait(req);
920         if (rc)
921                 GOTO(out, rc);
922
923         rc = sptlrpc_cli_unwrap_bulk_write(req, req->rq_bulk);
924 out:
925         ptlrpc_req_finished(req);
926         return rc;
927 }
928 EXPORT_SYMBOL(mdc_sendpage);
929 #endif
930
931 int mdc_readpage(struct obd_export *exp, const struct lu_fid *fid,
932                  struct obd_capa *oc, __u64 offset, struct page *page,
933                  struct ptlrpc_request **request)
934 {
935         struct ptlrpc_request   *req;
936         struct ptlrpc_bulk_desc *desc;
937         int                      rc;
938         ENTRY;
939
940         *request = NULL;
941         req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_READPAGE);
942         if (req == NULL)
943                 RETURN(-ENOMEM);
944
945         mdc_set_capa_size(req, &RMF_CAPA1, oc);
946
947         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_READPAGE);
948         if (rc) {
949                 ptlrpc_request_free(req);
950                 RETURN(rc);
951         }
952
953         req->rq_request_portal = MDS_READPAGE_PORTAL;
954         ptlrpc_at_set_req_timeout(req);
955
956         desc = ptlrpc_prep_bulk_imp(req, 1, BULK_PUT_SINK, MDS_BULK_PORTAL);
957         if (desc == NULL) {
958                 ptlrpc_request_free(req);
959                 RETURN(-ENOMEM);
960         }
961
962         /* NB req now owns desc and will free it when it gets freed */
963         ptlrpc_prep_bulk_page(desc, page, 0, CFS_PAGE_SIZE);
964         mdc_readdir_pack(req, offset, CFS_PAGE_SIZE, fid, oc);
965
966         ptlrpc_request_set_replen(req);
967         rc = ptlrpc_queue_wait(req);
968         if (rc) {
969                 ptlrpc_req_finished(req);
970                 RETURN(rc);
971         }
972
973         rc = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk,
974                                           req->rq_bulk->bd_nob_transferred);
975         if (rc < 0) {
976                 ptlrpc_req_finished(req);
977                 RETURN(rc);
978         }
979
980         if (req->rq_bulk->bd_nob_transferred != CFS_PAGE_SIZE) {
981                 CERROR("Unexpected # bytes transferred: %d (%ld expected)\n",
982                         req->rq_bulk->bd_nob_transferred, CFS_PAGE_SIZE);
983                 ptlrpc_req_finished(req);
984                 RETURN(-EPROTO);
985         }
986
987         *request = req;
988         RETURN(0);
989 }
990
991 static int mdc_ioc_fid2path(struct obd_export *exp, struct getinfo_fid2path *gf)
992 {
993         __u32 keylen, vallen;
994         void *key;
995         int rc;
996
997         if (gf->gf_pathlen > PATH_MAX)
998                 RETURN(-ENAMETOOLONG);
999         if (gf->gf_pathlen < 2)
1000                 RETURN(-EOVERFLOW);
1001
1002         /* Key is KEY_FID2PATH + getinfo_fid2path description */
1003         keylen = size_round(sizeof(KEY_FID2PATH)) + sizeof(*gf);
1004         OBD_ALLOC(key, keylen);
1005         if (key == NULL)
1006                 RETURN(-ENOMEM);
1007         memcpy(key, KEY_FID2PATH, sizeof(KEY_FID2PATH));
1008         memcpy(key + size_round(sizeof(KEY_FID2PATH)), gf, sizeof(*gf));
1009
1010         CDEBUG(D_IOCTL, "path get "DFID" from "LPU64" #%d\n",
1011                PFID(&gf->gf_fid), gf->gf_recno, gf->gf_linkno);
1012
1013         if (!fid_is_sane(&gf->gf_fid))
1014                 GOTO(out, rc = -EINVAL);
1015
1016         /* Val is struct getinfo_fid2path result plus path */
1017         vallen = sizeof(*gf) + gf->gf_pathlen;
1018
1019         rc = obd_get_info(exp, keylen, key, &vallen, gf, NULL);
1020         if (rc)
1021                 GOTO(out, rc);
1022
1023         if (vallen <= sizeof(*gf))
1024                 GOTO(out, rc = -EPROTO);
1025         else if (vallen > sizeof(*gf) + gf->gf_pathlen)
1026                 GOTO(out, rc = -EOVERFLOW);
1027
1028         CDEBUG(D_IOCTL, "path get "DFID" from "LPU64" #%d\n%s\n",
1029                PFID(&gf->gf_fid), gf->gf_recno, gf->gf_linkno, gf->gf_path);
1030
1031 out:
1032         OBD_FREE(key, keylen);
1033         return rc;
1034 }
1035
1036 static int mdc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
1037                          void *karg, void *uarg)
1038 {
1039         struct obd_device *obd = exp->exp_obd;
1040         struct obd_ioctl_data *data = karg;
1041         struct obd_import *imp = obd->u.cli.cl_import;
1042         struct llog_ctxt *ctxt;
1043         int rc;
1044         ENTRY;
1045
1046         if (!try_module_get(THIS_MODULE)) {
1047                 CERROR("Can't get module. Is it alive?");
1048                 return -EINVAL;
1049         }
1050         switch (cmd) {
1051         case OBD_IOC_CHANGELOG_CLEAR: {
1052                 struct ioc_changelog_clear *icc = karg;
1053                 struct changelog_setinfo cs =
1054                         {icc->icc_recno, icc->icc_id};
1055                 rc = obd_set_info_async(exp, strlen(KEY_CHANGELOG_CLEAR),
1056                                         KEY_CHANGELOG_CLEAR, sizeof(cs), &cs,
1057                                         NULL);
1058                 GOTO(out, rc);
1059         }
1060         case OBD_IOC_FID2PATH: {
1061                 rc = mdc_ioc_fid2path(exp, karg);
1062                 GOTO(out, rc);
1063         }
1064         case OBD_IOC_CLIENT_RECOVER:
1065                 rc = ptlrpc_recover_import(imp, data->ioc_inlbuf1);
1066                 if (rc < 0)
1067                         GOTO(out, rc);
1068                 GOTO(out, rc = 0);
1069         case IOC_OSC_SET_ACTIVE:
1070                 rc = ptlrpc_set_import_active(imp, data->ioc_offset);
1071                 GOTO(out, rc);
1072         case OBD_IOC_PARSE: {
1073                 ctxt = llog_get_context(exp->exp_obd, LLOG_CONFIG_REPL_CTXT);
1074                 rc = class_config_parse_llog(ctxt, data->ioc_inlbuf1, NULL);
1075                 llog_ctxt_put(ctxt);
1076                 GOTO(out, rc);
1077         }
1078 #ifdef __KERNEL__
1079         case OBD_IOC_LLOG_INFO:
1080         case OBD_IOC_LLOG_PRINT: {
1081                 ctxt = llog_get_context(obd, LLOG_CONFIG_REPL_CTXT);
1082                 rc = llog_ioctl(ctxt, cmd, data);
1083                 llog_ctxt_put(ctxt);
1084                 GOTO(out, rc);
1085         }
1086 #endif
1087         case OBD_IOC_POLL_QUOTACHECK:
1088                 rc = lquota_poll_check(quota_interface, exp,
1089                                        (struct if_quotacheck *)karg);
1090                 GOTO(out, rc);
1091         case OBD_IOC_PING_TARGET:
1092                 rc = ptlrpc_obd_ping(obd);
1093                 GOTO(out, rc);
1094         default:
1095                 CERROR("mdc_ioctl(): unrecognised ioctl %#x\n", cmd);
1096                 GOTO(out, rc = -ENOTTY);
1097         }
1098 out:
1099         module_put(THIS_MODULE);
1100
1101         return rc;
1102 }
1103
1104 static int do_set_info_async(struct obd_export *exp,
1105                              obd_count keylen, void *key,
1106                              obd_count vallen, void *val,
1107                              struct ptlrpc_request_set *set)
1108 {
1109         struct obd_import     *imp = class_exp2cliimp(exp);
1110         struct ptlrpc_request *req;
1111         char                  *tmp;
1112         int                    rc;
1113         ENTRY;
1114
1115         req = ptlrpc_request_alloc(imp, &RQF_MDS_SET_INFO);
1116         if (req == NULL)
1117                 RETURN(-ENOMEM);
1118
1119         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
1120                              RCL_CLIENT, keylen);
1121         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL,
1122                              RCL_CLIENT, vallen);
1123         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_SET_INFO);
1124         if (rc) {
1125                 ptlrpc_request_free(req);
1126                 RETURN(rc);
1127         }
1128
1129         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
1130         memcpy(tmp, key, keylen);
1131         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_VAL);
1132         memcpy(tmp, val, vallen);
1133
1134         ptlrpc_request_set_replen(req);
1135
1136         if (set) {
1137                 ptlrpc_set_add_req(set, req);
1138                 ptlrpc_check_set(NULL, set);
1139         } else {
1140                 rc = ptlrpc_queue_wait(req);
1141                 ptlrpc_req_finished(req);
1142         }
1143
1144         RETURN(rc);
1145 }
1146
1147 int mdc_get_info_rpc(struct obd_export *exp,
1148                      obd_count keylen, void *key,
1149                      int vallen, void *val)
1150 {
1151         struct obd_import      *imp = class_exp2cliimp(exp);
1152         struct ptlrpc_request  *req;
1153         char                   *tmp;
1154         int                     rc = -EINVAL;
1155         ENTRY;
1156
1157         req = ptlrpc_request_alloc(imp, &RQF_MDS_GET_INFO);
1158         if (req == NULL)
1159                 RETURN(-ENOMEM);
1160
1161         req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_KEY,
1162                              RCL_CLIENT, keylen);
1163         req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_VALLEN,
1164                              RCL_CLIENT, sizeof(__u32));
1165
1166         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GET_INFO);
1167         if (rc) {
1168                 ptlrpc_request_free(req);
1169                 RETURN(rc);
1170         }
1171
1172         tmp = req_capsule_client_get(&req->rq_pill, &RMF_GETINFO_KEY);
1173         memcpy(tmp, key, keylen);
1174         tmp = req_capsule_client_get(&req->rq_pill, &RMF_GETINFO_VALLEN);
1175         memcpy(tmp, &vallen, sizeof(__u32));
1176
1177         req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_VAL,
1178                              RCL_SERVER, vallen);
1179         ptlrpc_request_set_replen(req);
1180
1181         rc = ptlrpc_queue_wait(req);
1182         if (rc == 0) {
1183                 tmp = req_capsule_server_get(&req->rq_pill, &RMF_GETINFO_VAL);
1184                 memcpy(val, tmp, vallen);
1185                 if (lustre_msg_swabbed(req->rq_repmsg)) {
1186                         if (KEY_IS(KEY_FID2PATH)) {
1187                                 lustre_swab_fid2path(val);
1188                         }
1189                 }
1190         }
1191         ptlrpc_req_finished(req);
1192
1193         RETURN(rc);
1194 }
1195
1196 int mdc_set_info_async(struct obd_export *exp,
1197                        obd_count keylen, void *key,
1198                        obd_count vallen, void *val,
1199                        struct ptlrpc_request_set *set)
1200 {
1201         struct obd_import *imp = class_exp2cliimp(exp);
1202         int                rc = -EINVAL;
1203         ENTRY;
1204
1205         if (KEY_IS(KEY_INIT_RECOV)) {
1206                 if (vallen != sizeof(int))
1207                         RETURN(-EINVAL);
1208                 spin_lock(&imp->imp_lock);
1209                 imp->imp_initial_recov = *(int *)val;
1210                 spin_unlock(&imp->imp_lock);
1211                 CDEBUG(D_HA, "%s: set imp_initial_recov = %d\n",
1212                        exp->exp_obd->obd_name, imp->imp_initial_recov);
1213                 RETURN(0);
1214         }
1215         /* Turn off initial_recov after we try all backup servers once */
1216         if (KEY_IS(KEY_INIT_RECOV_BACKUP)) {
1217                 if (vallen != sizeof(int))
1218                         RETURN(-EINVAL);
1219                 spin_lock(&imp->imp_lock);
1220                 imp->imp_initial_recov_bk = *(int *)val;
1221                 if (imp->imp_initial_recov_bk)
1222                         imp->imp_initial_recov = 1;
1223                 spin_unlock(&imp->imp_lock);
1224                 CDEBUG(D_HA, "%s: set imp_initial_recov_bk = %d\n",
1225                        exp->exp_obd->obd_name, imp->imp_initial_recov_bk);
1226                 RETURN(0);
1227         }
1228         if (KEY_IS(KEY_READ_ONLY)) {
1229                 if (vallen != sizeof(int))
1230                         RETURN(-EINVAL);
1231
1232                 spin_lock(&imp->imp_lock);
1233                 if (*((int *)val)) {
1234                         imp->imp_connect_flags_orig |= OBD_CONNECT_RDONLY;
1235                         imp->imp_connect_data.ocd_connect_flags |= OBD_CONNECT_RDONLY;
1236                 } else {
1237                         imp->imp_connect_flags_orig &= ~OBD_CONNECT_RDONLY;
1238                         imp->imp_connect_data.ocd_connect_flags &= ~OBD_CONNECT_RDONLY;
1239                 }
1240                 spin_unlock(&imp->imp_lock);
1241
1242                 rc = do_set_info_async(exp, keylen, key, vallen, val, set);
1243                 RETURN(rc);
1244         }
1245         if (KEY_IS(KEY_SPTLRPC_CONF)) {
1246                 sptlrpc_conf_client_adapt(exp->exp_obd);
1247                 RETURN(0);
1248         }
1249         if (KEY_IS(KEY_FLUSH_CTX)) {
1250                 sptlrpc_import_flush_my_ctx(imp);
1251                 RETURN(0);
1252         }
1253         if (KEY_IS(KEY_MDS_CONN)) {
1254                 struct obd_import *imp = class_exp2cliimp(exp);
1255
1256                 /* mds-mds import */
1257                 spin_lock(&imp->imp_lock);
1258                 imp->imp_server_timeout = 1;
1259                 spin_unlock(&imp->imp_lock);
1260                 imp->imp_client->cli_request_portal = MDS_MDS_PORTAL;
1261                 CDEBUG(D_OTHER, "%s: timeout / 2\n", exp->exp_obd->obd_name);
1262                 RETURN(0);
1263         }
1264         if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
1265                 rc = do_set_info_async(exp, keylen, key, vallen, val, set);
1266                 RETURN(rc);
1267         }
1268
1269         RETURN(rc);
1270 }
1271
1272 int mdc_get_info(struct obd_export *exp, __u32 keylen, void *key,
1273                  __u32 *vallen, void *val, struct lov_stripe_md *lsm)
1274 {
1275         int rc = -EINVAL;
1276
1277         if (KEY_IS(KEY_MAX_EASIZE)) {
1278                 int mdsize, *max_easize;
1279
1280                 if (*vallen != sizeof(int))
1281                         RETURN(-EINVAL);
1282                 mdsize = *(int*)val;
1283                 if (mdsize > exp->exp_obd->u.cli.cl_max_mds_easize)
1284                         exp->exp_obd->u.cli.cl_max_mds_easize = mdsize;
1285                 max_easize = val;
1286                 *max_easize = exp->exp_obd->u.cli.cl_max_mds_easize;
1287                 RETURN(0);
1288         }
1289         if (KEY_IS(KEY_CONN_DATA)) {
1290                 struct obd_import *imp = class_exp2cliimp(exp);
1291                 struct obd_connect_data *data = val;
1292
1293                 if (*vallen != sizeof(*data))
1294                         RETURN(-EINVAL);
1295
1296                 *data = imp->imp_connect_data;
1297                 RETURN(0);
1298         }
1299
1300         rc = mdc_get_info_rpc(exp, keylen, key, *vallen, val);
1301
1302         RETURN(rc);
1303 }
1304
1305 static int mdc_statfs(struct obd_device *obd, struct obd_statfs *osfs,
1306                       __u64 max_age, __u32 flags)
1307 {
1308         struct ptlrpc_request *req;
1309         struct obd_statfs     *msfs;
1310         struct obd_import     *imp = NULL;
1311         int                    rc;
1312         ENTRY;
1313
1314
1315         /*Since the request might also come from lprocfs, so we need
1316          *sync this with client_disconnect_export Bug15684*/
1317         down_read(&obd->u.cli.cl_sem);
1318         if (obd->u.cli.cl_import)
1319                 imp = class_import_get(obd->u.cli.cl_import);
1320         up_read(&obd->u.cli.cl_sem);
1321         if (!imp)
1322                 RETURN(-ENODEV);
1323
1324         req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_STATFS,
1325                                         LUSTRE_MDS_VERSION, MDS_STATFS);
1326         if (req == NULL)
1327                 GOTO(output, rc = -ENOMEM);
1328
1329         ptlrpc_request_set_replen(req);
1330
1331         if (flags & OBD_STATFS_NODELAY) {
1332                 /* procfs requests not want stay in wait for avoid deadlock */
1333                 req->rq_no_resend = 1;
1334                 req->rq_no_delay = 1;
1335         }
1336
1337         rc = ptlrpc_queue_wait(req);
1338         if (rc) {
1339                 /* check connection error first */
1340                 if (imp->imp_connect_error)
1341                         rc = imp->imp_connect_error;
1342                 GOTO(out, rc);
1343         }
1344
1345         msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
1346         if (msfs == NULL)
1347                 GOTO(out, rc = -EPROTO);
1348
1349         *osfs = *msfs;
1350         EXIT;
1351 out:
1352         ptlrpc_req_finished(req);
1353 output:
1354         class_import_put(imp);
1355         return rc;
1356 }
1357
1358 static int mdc_pin(struct obd_export *exp, const struct lu_fid *fid,
1359                    struct obd_capa *oc, struct obd_client_handle *handle,
1360                    int flags)
1361 {
1362         struct ptlrpc_request *req;
1363         struct mdt_body       *body;
1364         int                    rc;
1365         ENTRY;
1366
1367         req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_PIN);
1368         if (req == NULL)
1369                 RETURN(-ENOMEM);
1370
1371         mdc_set_capa_size(req, &RMF_CAPA1, oc);
1372
1373         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_PIN);
1374         if (rc) {
1375                 ptlrpc_request_free(req);
1376                 RETURN(rc);
1377         }
1378
1379         mdc_pack_body(req, fid, oc, 0, 0, -1, flags);
1380
1381         ptlrpc_request_set_replen(req);
1382
1383         mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
1384         rc = ptlrpc_queue_wait(req);
1385         mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
1386         if (rc) {
1387                 CERROR("Pin failed: %d\n", rc);
1388                 GOTO(err_out, rc);
1389         }
1390
1391         body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
1392         if (body == NULL)
1393                 GOTO(err_out, rc = -EPROTO);
1394
1395         handle->och_fh = body->handle;
1396         handle->och_magic = OBD_CLIENT_HANDLE_MAGIC;
1397
1398         OBD_ALLOC_PTR(handle->och_mod);
1399         if (handle->och_mod == NULL) {
1400                 DEBUG_REQ(D_ERROR, req, "can't allocate md_open_data");
1401                 GOTO(err_out, rc = -ENOMEM);
1402         }
1403         handle->och_mod->mod_open_req = req; /* will be dropped by unpin */
1404
1405         RETURN(0);
1406
1407 err_out:
1408         ptlrpc_req_finished(req);
1409         RETURN(rc);
1410 }
1411
1412 static int mdc_unpin(struct obd_export *exp, struct obd_client_handle *handle,
1413                      int flag)
1414 {
1415         struct ptlrpc_request *req;
1416         struct mdt_body       *body;
1417         int                    rc;
1418         ENTRY;
1419
1420         req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), &RQF_MDS_UNPIN,
1421                                         LUSTRE_MDS_VERSION, MDS_UNPIN);
1422         if (req == NULL)
1423                 RETURN(-ENOMEM);
1424
1425         body = req_capsule_client_get(&req->rq_pill, &RMF_MDT_BODY);
1426         body->handle = handle->och_fh;
1427         body->flags = flag;
1428
1429         ptlrpc_request_set_replen(req);
1430
1431         mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
1432         rc = ptlrpc_queue_wait(req);
1433         mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
1434
1435         if (rc != 0)
1436                 CERROR("Unpin failed: %d\n", rc);
1437
1438         ptlrpc_req_finished(req);
1439         ptlrpc_req_finished(handle->och_mod->mod_open_req);
1440
1441         OBD_FREE(handle->och_mod, sizeof(*handle->och_mod));
1442         RETURN(rc);
1443 }
1444
1445 int mdc_sync(struct obd_export *exp, const struct lu_fid *fid,
1446              struct obd_capa *oc, struct ptlrpc_request **request)
1447 {
1448         struct ptlrpc_request *req;
1449         int                    rc;
1450         ENTRY;
1451
1452         *request = NULL;
1453         req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_SYNC);
1454         if (req == NULL)
1455                 RETURN(-ENOMEM);
1456
1457         mdc_set_capa_size(req, &RMF_CAPA1, oc);
1458
1459         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_SYNC);
1460         if (rc) {
1461                 ptlrpc_request_free(req);
1462                 RETURN(rc);
1463         }
1464
1465         mdc_pack_body(req, fid, oc, 0, 0, -1, 0);
1466
1467         ptlrpc_request_set_replen(req);
1468
1469         rc = ptlrpc_queue_wait(req);
1470         if (rc)
1471                 ptlrpc_req_finished(req);
1472         else
1473                 *request = req;
1474         RETURN(rc);
1475 }
1476
1477 static int mdc_import_event(struct obd_device *obd, struct obd_import *imp,
1478                             enum obd_import_event event)
1479 {
1480         int rc = 0;
1481
1482         LASSERT(imp->imp_obd == obd);
1483
1484         switch (event) {
1485         case IMP_EVENT_DISCON: {
1486 #if 0
1487                 /* XXX Pass event up to OBDs stack. used only for FLD now */
1488                 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_DISCON, NULL);
1489 #endif
1490                 break;
1491         }
1492         case IMP_EVENT_INACTIVE: {
1493                 struct client_obd *cli = &obd->u.cli;
1494                 /*
1495                  * Flush current sequence to make client obtain new one
1496                  * from server in case of disconnect/reconnect.
1497                  * If range is already empty then no need to flush it.
1498                  */
1499                 if (cli->cl_seq != NULL &&
1500                     !range_is_exhausted(&cli->cl_seq->lcs_space)) {
1501                         seq_client_flush(cli->cl_seq);
1502                 }
1503
1504                 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_INACTIVE, NULL);
1505                 break;
1506         }
1507         case IMP_EVENT_INVALIDATE: {
1508                 struct ldlm_namespace *ns = obd->obd_namespace;
1509
1510                 ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY);
1511
1512                 break;
1513         }
1514         case IMP_EVENT_ACTIVE: {
1515                 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVE, NULL);
1516                 break;
1517         }
1518         case IMP_EVENT_OCD:
1519                 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_OCD, NULL);
1520                 break;
1521
1522         default:
1523                 CERROR("Unknown import event %x\n", event);
1524                 LBUG();
1525         }
1526         RETURN(rc);
1527 }
1528
1529 static int mdc_fid_init(struct obd_export *exp)
1530 {
1531         struct client_obd *cli = &exp->exp_obd->u.cli;
1532         char *prefix;
1533         int rc;
1534         ENTRY;
1535
1536         OBD_ALLOC_PTR(cli->cl_seq);
1537         if (cli->cl_seq == NULL)
1538                 RETURN(-ENOMEM);
1539
1540         OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
1541         if (prefix == NULL)
1542                 GOTO(out_free_seq, rc = -ENOMEM);
1543
1544         snprintf(prefix, MAX_OBD_NAME + 5, "srv-%s",
1545                  exp->exp_obd->obd_name);
1546
1547         /* Init client side sequence-manager */
1548         rc = seq_client_init(cli->cl_seq, exp,
1549                              LUSTRE_SEQ_METADATA,
1550                              prefix, NULL);
1551         OBD_FREE(prefix, MAX_OBD_NAME + 5);
1552         if (rc)
1553                 GOTO(out_free_seq, rc);
1554
1555         RETURN(rc);
1556 out_free_seq:
1557         OBD_FREE_PTR(cli->cl_seq);
1558         cli->cl_seq = NULL;
1559         return rc;
1560 }
1561
1562 static int mdc_fid_fini(struct obd_export *exp)
1563 {
1564         struct client_obd *cli = &exp->exp_obd->u.cli;
1565         ENTRY;
1566
1567         if (cli->cl_seq != NULL) {
1568                 seq_client_fini(cli->cl_seq);
1569                 OBD_FREE_PTR(cli->cl_seq);
1570                 cli->cl_seq = NULL;
1571         }
1572
1573         RETURN(0);
1574 }
1575
1576 int mdc_fid_alloc(struct obd_export *exp, struct lu_fid *fid,
1577                   struct md_op_data *op_data)
1578 {
1579         struct client_obd *cli = &exp->exp_obd->u.cli;
1580         struct lu_client_seq *seq = cli->cl_seq;
1581         ENTRY;
1582         RETURN(seq_client_alloc_fid(seq, fid));
1583 }
1584
1585 /* XXX This method is used only to clear current fid seq
1586  * once fld/mds insert failed */
1587 static int mdc_fid_delete(struct obd_export *exp, const struct lu_fid *fid)
1588 {
1589         struct client_obd *cli = &exp->exp_obd->u.cli;
1590
1591         seq_client_flush(cli->cl_seq);
1592         return 0;
1593 }
1594
1595 struct obd_uuid *mdc_get_uuid(struct obd_export *exp) {
1596         struct client_obd *cli = &exp->exp_obd->u.cli;
1597         return &cli->cl_target_uuid;
1598 }
1599
1600 static int mdc_setup(struct obd_device *obd, struct lustre_cfg *cfg)
1601 {
1602         struct client_obd *cli = &obd->u.cli;
1603         struct lprocfs_static_vars lvars = { 0 };
1604         int rc;
1605         ENTRY;
1606
1607         OBD_ALLOC(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
1608         if (!cli->cl_rpc_lock)
1609                 RETURN(-ENOMEM);
1610         mdc_init_rpc_lock(cli->cl_rpc_lock);
1611
1612         ptlrpcd_addref();
1613
1614         OBD_ALLOC(cli->cl_setattr_lock, sizeof (*cli->cl_setattr_lock));
1615         if (!cli->cl_setattr_lock)
1616                 GOTO(err_rpc_lock, rc = -ENOMEM);
1617         mdc_init_rpc_lock(cli->cl_setattr_lock);
1618
1619         OBD_ALLOC(cli->cl_close_lock, sizeof (*cli->cl_close_lock));
1620         if (!cli->cl_close_lock)
1621                 GOTO(err_setattr_lock, rc = -ENOMEM);
1622         mdc_init_rpc_lock(cli->cl_close_lock);
1623
1624         rc = client_obd_setup(obd, cfg);
1625         if (rc)
1626                 GOTO(err_close_lock, rc);
1627         lprocfs_mdc_init_vars(&lvars);
1628         lprocfs_obd_setup(obd, lvars.obd_vars);
1629         sptlrpc_lprocfs_cliobd_attach(obd);
1630         ptlrpc_lprocfs_register_obd(obd);
1631
1632         rc = obd_llog_init(obd, &obd->obd_olg, obd, 0, NULL, NULL);
1633         if (rc) {
1634                 mdc_cleanup(obd);
1635                 CERROR("failed to setup llogging subsystems\n");
1636         }
1637
1638         RETURN(rc);
1639
1640 err_close_lock:
1641         OBD_FREE(cli->cl_close_lock, sizeof (*cli->cl_close_lock));
1642 err_setattr_lock:
1643         OBD_FREE(cli->cl_setattr_lock, sizeof (*cli->cl_setattr_lock));
1644 err_rpc_lock:
1645         OBD_FREE(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
1646         ptlrpcd_decref();
1647         RETURN(rc);
1648 }
1649
1650 /* Initialize the default and maximum LOV EA and cookie sizes.  This allows
1651  * us to make MDS RPCs with large enough reply buffers to hold the
1652  * maximum-sized (= maximum striped) EA and cookie without having to
1653  * calculate this (via a call into the LOV + OSCs) each time we make an RPC. */
1654 static int mdc_init_ea_size(struct obd_export *exp, int easize,
1655                      int def_easize, int cookiesize)
1656 {
1657         struct obd_device *obd = exp->exp_obd;
1658         struct client_obd *cli = &obd->u.cli;
1659         ENTRY;
1660
1661         if (cli->cl_max_mds_easize < easize)
1662                 cli->cl_max_mds_easize = easize;
1663
1664         if (cli->cl_default_mds_easize < def_easize)
1665                 cli->cl_default_mds_easize = def_easize;
1666
1667         if (cli->cl_max_mds_cookiesize < cookiesize)
1668                 cli->cl_max_mds_cookiesize = cookiesize;
1669
1670         RETURN(0);
1671 }
1672
1673 static int mdc_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
1674 {
1675         int rc = 0;
1676         ENTRY;
1677
1678         switch (stage) {
1679         case OBD_CLEANUP_EARLY:
1680         case OBD_CLEANUP_EXPORTS:
1681                 /* If we set up but never connected, the
1682                    client import will not have been cleaned. */
1683                 if (obd->u.cli.cl_import) {
1684                         struct obd_import *imp;
1685                         down_write(&obd->u.cli.cl_sem);
1686                         imp = obd->u.cli.cl_import;
1687                         CERROR("client import never connected\n");
1688                         ptlrpc_invalidate_import(imp);
1689                         class_destroy_import(imp);
1690                         up_write(&obd->u.cli.cl_sem);
1691                         obd->u.cli.cl_import = NULL;
1692                 }
1693                 rc = obd_llog_finish(obd, 0);
1694                 if (rc != 0)
1695                         CERROR("failed to cleanup llogging subsystems\n");
1696                 break;
1697         }
1698         RETURN(rc);
1699 }
1700
1701 static int mdc_cleanup(struct obd_device *obd)
1702 {
1703         struct client_obd *cli = &obd->u.cli;
1704
1705         OBD_FREE(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
1706         OBD_FREE(cli->cl_setattr_lock, sizeof (*cli->cl_setattr_lock));
1707         OBD_FREE(cli->cl_close_lock, sizeof (*cli->cl_close_lock));
1708
1709         ptlrpc_lprocfs_unregister_obd(obd);
1710         lprocfs_obd_cleanup(obd);
1711         ptlrpcd_decref();
1712
1713         return client_obd_cleanup(obd);
1714 }
1715
1716
1717 static int mdc_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
1718                          struct obd_device *tgt, int count,
1719                          struct llog_catid *logid, struct obd_uuid *uuid)
1720 {
1721         struct llog_ctxt *ctxt;
1722         int rc;
1723         ENTRY;
1724
1725         LASSERT(olg == &obd->obd_olg);
1726
1727         rc = llog_setup(obd, olg, LLOG_LOVEA_REPL_CTXT, tgt, 0, NULL,
1728                         &llog_client_ops);
1729         if (rc)
1730                 RETURN(rc);
1731         ctxt = llog_get_context(obd, LLOG_LOVEA_REPL_CTXT);
1732         llog_initiator_connect(ctxt);
1733         llog_ctxt_put(ctxt);
1734
1735         rc = llog_setup(obd, olg, LLOG_CHANGELOG_REPL_CTXT, tgt, 0, NULL,
1736                         &llog_client_ops);
1737         if (rc == 0) {
1738                 ctxt = llog_group_get_ctxt(olg, LLOG_CHANGELOG_REPL_CTXT);
1739                 llog_initiator_connect(ctxt);
1740                 llog_ctxt_put(ctxt);
1741         }
1742
1743         RETURN(rc);
1744 }
1745
1746 static int mdc_llog_finish(struct obd_device *obd, int count)
1747 {
1748         struct llog_ctxt *ctxt;
1749         int rc = 0;
1750         ENTRY;
1751
1752         ctxt = llog_get_context(obd, LLOG_LOVEA_REPL_CTXT);
1753         if (ctxt)
1754                 rc = llog_cleanup(ctxt);
1755
1756         ctxt = llog_get_context(obd, LLOG_CHANGELOG_REPL_CTXT);
1757         if (ctxt)
1758                 rc = llog_cleanup(ctxt);
1759
1760         RETURN(rc);
1761 }
1762
1763 static int mdc_process_config(struct obd_device *obd, obd_count len, void *buf)
1764 {
1765         struct lustre_cfg *lcfg = buf;
1766         struct lprocfs_static_vars lvars = { 0 };
1767         int rc = 0;
1768
1769         lprocfs_mdc_init_vars(&lvars);
1770         switch (lcfg->lcfg_command) {
1771         default:
1772                 rc = class_process_proc_param(PARAM_MDC, lvars.obd_vars,
1773                                               lcfg, obd);
1774                 if (rc > 0)
1775                         rc = 0;
1776                 break;
1777         }
1778         return(rc);
1779 }
1780
1781
1782 /* get remote permission for current user on fid */
1783 int mdc_get_remote_perm(struct obd_export *exp, const struct lu_fid *fid,
1784                         struct obd_capa *oc, __u32 suppgid,
1785                         struct ptlrpc_request **request)
1786 {
1787         struct ptlrpc_request  *req;
1788         int                    rc;
1789         ENTRY;
1790
1791         LASSERT(client_is_remote(exp));
1792
1793         *request = NULL;
1794         req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_GETATTR);
1795         if (req == NULL)
1796                 RETURN(-ENOMEM);
1797
1798         mdc_set_capa_size(req, &RMF_CAPA1, oc);
1799
1800         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR);
1801         if (rc) {
1802                 ptlrpc_request_free(req);
1803                 RETURN(rc);
1804         }
1805
1806         mdc_pack_body(req, fid, oc, OBD_MD_FLRMTPERM, 0, suppgid, 0);
1807
1808         req_capsule_set_size(&req->rq_pill, &RMF_ACL, RCL_SERVER,
1809                              sizeof(struct mdt_remote_perm));
1810
1811         ptlrpc_request_set_replen(req);
1812
1813         rc = ptlrpc_queue_wait(req);
1814         if (rc)
1815                 ptlrpc_req_finished(req);
1816         else
1817                 *request = req;
1818         RETURN(rc);
1819 }
1820
1821 static int mdc_interpret_renew_capa(const struct lu_env *env,
1822                                     struct ptlrpc_request *req, void *unused,
1823                                     int status)
1824 {
1825         struct obd_capa *oc = req->rq_async_args.pointer_arg[0];
1826         renew_capa_cb_t cb = req->rq_async_args.pointer_arg[1];
1827         struct mdt_body *body = NULL;
1828         struct lustre_capa *capa;
1829         ENTRY;
1830
1831         if (status)
1832                 GOTO(out, capa = ERR_PTR(status));
1833
1834         body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
1835         if (body == NULL)
1836                 GOTO(out, capa = ERR_PTR(-EFAULT));
1837
1838         if ((body->valid & OBD_MD_FLOSSCAPA) == 0)
1839                 GOTO(out, capa = ERR_PTR(-ENOENT));
1840
1841         capa = req_capsule_server_get(&req->rq_pill, &RMF_CAPA2);
1842         if (!capa)
1843                 GOTO(out, capa = ERR_PTR(-EFAULT));
1844         EXIT;
1845 out:
1846         cb(oc, capa);
1847         return 0;
1848 }
1849
1850 static int mdc_renew_capa(struct obd_export *exp, struct obd_capa *oc,
1851                           renew_capa_cb_t cb)
1852 {
1853         struct ptlrpc_request *req;
1854         ENTRY;
1855
1856         req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), &RQF_MDS_GETATTR,
1857                                         LUSTRE_MDS_VERSION, MDS_GETATTR);
1858         if (req == NULL)
1859                 RETURN(-ENOMEM);
1860
1861         /* NB, OBD_MD_FLOSSCAPA is set here, but it doesn't necessarily mean the
1862          * capa to renew is oss capa.
1863          */
1864         mdc_pack_body(req, &oc->c_capa.lc_fid, oc, OBD_MD_FLOSSCAPA, 0, -1, 0);
1865         ptlrpc_request_set_replen(req);
1866
1867         req->rq_async_args.pointer_arg[0] = oc;
1868         req->rq_async_args.pointer_arg[1] = cb;
1869         req->rq_interpret_reply = mdc_interpret_renew_capa;
1870         ptlrpcd_add_req(req, PSCOPE_OTHER);
1871         RETURN(0);
1872 }
1873
1874 static int mdc_connect(const struct lu_env *env,
1875                        struct obd_export **exp,
1876                        struct obd_device *obd, struct obd_uuid *cluuid,
1877                        struct obd_connect_data *data,
1878                        void *localdata)
1879 {
1880         struct obd_import *imp = obd->u.cli.cl_import;
1881
1882         /* mds-mds import features */
1883         if (data && (data->ocd_connect_flags & OBD_CONNECT_MDS_MDS)) {
1884                 spin_lock(&imp->imp_lock);
1885                 imp->imp_server_timeout = 1;
1886                 spin_unlock(&imp->imp_lock);
1887                 imp->imp_client->cli_request_portal = MDS_MDS_PORTAL;
1888                 CDEBUG(D_OTHER, "%s: Set 'mds' portal and timeout\n",
1889                        obd->obd_name);
1890         }
1891
1892         return client_connect_import(env, exp, obd, cluuid, data, NULL);
1893 }
1894
1895 struct obd_ops mdc_obd_ops = {
1896         .o_owner            = THIS_MODULE,
1897         .o_setup            = mdc_setup,
1898         .o_precleanup       = mdc_precleanup,
1899         .o_cleanup          = mdc_cleanup,
1900         .o_add_conn         = client_import_add_conn,
1901         .o_del_conn         = client_import_del_conn,
1902         .o_connect          = mdc_connect,
1903         .o_disconnect       = client_disconnect_export,
1904         .o_iocontrol        = mdc_iocontrol,
1905         .o_set_info_async   = mdc_set_info_async,
1906         .o_statfs           = mdc_statfs,
1907         .o_pin              = mdc_pin,
1908         .o_unpin            = mdc_unpin,
1909         .o_fid_init         = mdc_fid_init,
1910         .o_fid_fini         = mdc_fid_fini,
1911         .o_fid_alloc        = mdc_fid_alloc,
1912         .o_fid_delete       = mdc_fid_delete,
1913         .o_import_event     = mdc_import_event,
1914         .o_llog_init        = mdc_llog_init,
1915         .o_llog_finish      = mdc_llog_finish,
1916         .o_get_info         = mdc_get_info,
1917         .o_process_config   = mdc_process_config,
1918         .o_get_uuid         = mdc_get_uuid,
1919 };
1920
1921 struct md_ops mdc_md_ops = {
1922         .m_getstatus        = mdc_getstatus,
1923         .m_change_cbdata    = mdc_change_cbdata,
1924         .m_close            = mdc_close,
1925         .m_create           = mdc_create,
1926         .m_done_writing     = mdc_done_writing,
1927         .m_enqueue          = mdc_enqueue,
1928         .m_getattr          = mdc_getattr,
1929         .m_getattr_name     = mdc_getattr_name,
1930         .m_intent_lock      = mdc_intent_lock,
1931         .m_link             = mdc_link,
1932         .m_is_subdir        = mdc_is_subdir,
1933         .m_rename           = mdc_rename,
1934         .m_setattr          = mdc_setattr,
1935         .m_setxattr         = mdc_setxattr,
1936         .m_getxattr         = mdc_getxattr,
1937         .m_sync             = mdc_sync,
1938         .m_readpage         = mdc_readpage,
1939         .m_unlink           = mdc_unlink,
1940         .m_cancel_unused    = mdc_cancel_unused,
1941         .m_init_ea_size     = mdc_init_ea_size,
1942         .m_set_lock_data    = mdc_set_lock_data,
1943         .m_lock_match       = mdc_lock_match,
1944         .m_get_lustre_md    = mdc_get_lustre_md,
1945         .m_free_lustre_md   = mdc_free_lustre_md,
1946         .m_set_open_replay_data = mdc_set_open_replay_data,
1947         .m_clear_open_replay_data = mdc_clear_open_replay_data,
1948         .m_renew_capa       = mdc_renew_capa,
1949         .m_unpack_capa      = mdc_unpack_capa,
1950         .m_get_remote_perm  = mdc_get_remote_perm,
1951         .m_intent_getattr_async = mdc_intent_getattr_async,
1952         .m_revalidate_lock      = mdc_revalidate_lock
1953 };
1954
1955 int __init mdc_init(void)
1956 {
1957         int rc;
1958         struct lprocfs_static_vars lvars = { 0 };
1959         lprocfs_mdc_init_vars(&lvars);
1960
1961         request_module("lquota");
1962         quota_interface = PORTAL_SYMBOL_GET(mdc_quota_interface);
1963         init_obd_quota_ops(quota_interface, &mdc_obd_ops);
1964
1965         rc = class_register_type(&mdc_obd_ops, &mdc_md_ops, lvars.module_vars,
1966                                  LUSTRE_MDC_NAME, NULL);
1967         if (rc && quota_interface)
1968                 PORTAL_SYMBOL_PUT(mdc_quota_interface);
1969
1970         RETURN(rc);
1971 }
1972
1973 #ifdef __KERNEL__
1974 static void /*__exit*/ mdc_exit(void)
1975 {
1976         if (quota_interface)
1977                 PORTAL_SYMBOL_PUT(mdc_quota_interface);
1978
1979         class_unregister_type(LUSTRE_MDC_NAME);
1980 }
1981
1982 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
1983 MODULE_DESCRIPTION("Lustre Metadata Client");
1984 MODULE_LICENSE("GPL");
1985
1986 module_init(mdc_init);
1987 module_exit(mdc_exit);
1988 #endif