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33#define DEBUG_SUBSYSTEM S_SEC
34
35#include "../../include/linux/libcfs/libcfs.h"
36#include <linux/crypto.h>
37#include <linux/key.h>
38
39#include "../include/obd.h"
40#include "../include/obd_support.h"
41#include "../include/lustre_import.h"
42#include "../include/lustre_param.h"
43#include "../include/lustre_sec.h"
44
45#include "ptlrpc_internal.h"
46
47enum lustre_sec_part sptlrpc_target_sec_part(struct obd_device *obd)
48{
49 const char *type = obd->obd_type->typ_name;
50
51 if (!strcmp(type, LUSTRE_MDT_NAME))
52 return LUSTRE_SP_MDT;
53 if (!strcmp(type, LUSTRE_OST_NAME))
54 return LUSTRE_SP_OST;
55 if (!strcmp(type, LUSTRE_MGS_NAME))
56 return LUSTRE_SP_MGS;
57
58 CERROR("unknown target %p(%s)\n", obd, type);
59 return LUSTRE_SP_ANY;
60}
61EXPORT_SYMBOL(sptlrpc_target_sec_part);
62
63
64
65
66
67
68
69
70int sptlrpc_parse_flavor(const char *str, struct sptlrpc_flavor *flvr)
71{
72 char buf[32];
73 char *bulk, *alg;
74
75 memset(flvr, 0, sizeof(*flvr));
76
77 if (!str || str[0] == '\0') {
78 flvr->sf_rpc = SPTLRPC_FLVR_INVALID;
79 return 0;
80 }
81
82 strlcpy(buf, str, sizeof(buf));
83
84 bulk = strchr(buf, '-');
85 if (bulk)
86 *bulk++ = '\0';
87
88 flvr->sf_rpc = sptlrpc_name2flavor_base(buf);
89 if (flvr->sf_rpc == SPTLRPC_FLVR_INVALID)
90 goto err_out;
91
92
93
94
95 if (flvr->sf_rpc == SPTLRPC_FLVR_PLAIN) {
96 flvr->u_bulk.hash.hash_alg = BULK_HASH_ALG_ADLER32;
97 if (bulk) {
98
99
100
101 alg = strchr(bulk, ':');
102 if (!alg)
103 goto err_out;
104 *alg++ = '\0';
105
106 if (strcmp(bulk, "hash"))
107 goto err_out;
108
109 flvr->u_bulk.hash.hash_alg = sptlrpc_get_hash_alg(alg);
110 if (flvr->u_bulk.hash.hash_alg >= BULK_HASH_ALG_MAX)
111 goto err_out;
112 }
113
114 if (flvr->u_bulk.hash.hash_alg == BULK_HASH_ALG_NULL)
115 flvr_set_bulk_svc(&flvr->sf_rpc, SPTLRPC_BULK_SVC_NULL);
116 else
117 flvr_set_bulk_svc(&flvr->sf_rpc, SPTLRPC_BULK_SVC_INTG);
118 } else {
119 if (bulk)
120 goto err_out;
121 }
122
123 flvr->sf_flags = 0;
124 return 0;
125
126err_out:
127 CERROR("invalid flavor string: %s\n", str);
128 return -EINVAL;
129}
130EXPORT_SYMBOL(sptlrpc_parse_flavor);
131
132
133
134
135
136static void get_default_flavor(struct sptlrpc_flavor *sf)
137{
138 memset(sf, 0, sizeof(*sf));
139
140 sf->sf_rpc = SPTLRPC_FLVR_NULL;
141 sf->sf_flags = 0;
142}
143
144static void sptlrpc_rule_init(struct sptlrpc_rule *rule)
145{
146 rule->sr_netid = LNET_NIDNET(LNET_NID_ANY);
147 rule->sr_from = LUSTRE_SP_ANY;
148 rule->sr_to = LUSTRE_SP_ANY;
149 rule->sr_padding = 0;
150
151 get_default_flavor(&rule->sr_flvr);
152}
153
154
155
156
157static int sptlrpc_parse_rule(char *param, struct sptlrpc_rule *rule)
158{
159 char *flavor, *dir;
160 int rc;
161
162 sptlrpc_rule_init(rule);
163
164 flavor = strchr(param, '=');
165 if (!flavor) {
166 CERROR("invalid param, no '='\n");
167 return -EINVAL;
168 }
169 *flavor++ = '\0';
170
171 dir = strchr(param, '.');
172 if (dir)
173 *dir++ = '\0';
174
175
176 if (strcmp(param, "default")) {
177 rule->sr_netid = libcfs_str2net(param);
178 if (rule->sr_netid == LNET_NIDNET(LNET_NID_ANY)) {
179 CERROR("invalid network name: %s\n", param);
180 return -EINVAL;
181 }
182 }
183
184
185 if (dir) {
186 if (!strcmp(dir, "mdt2ost")) {
187 rule->sr_from = LUSTRE_SP_MDT;
188 rule->sr_to = LUSTRE_SP_OST;
189 } else if (!strcmp(dir, "mdt2mdt")) {
190 rule->sr_from = LUSTRE_SP_MDT;
191 rule->sr_to = LUSTRE_SP_MDT;
192 } else if (!strcmp(dir, "cli2ost")) {
193 rule->sr_from = LUSTRE_SP_CLI;
194 rule->sr_to = LUSTRE_SP_OST;
195 } else if (!strcmp(dir, "cli2mdt")) {
196 rule->sr_from = LUSTRE_SP_CLI;
197 rule->sr_to = LUSTRE_SP_MDT;
198 } else {
199 CERROR("invalid rule dir segment: %s\n", dir);
200 return -EINVAL;
201 }
202 }
203
204
205 rc = sptlrpc_parse_flavor(flavor, &rule->sr_flvr);
206 if (rc)
207 return -EINVAL;
208
209 return 0;
210}
211
212static void sptlrpc_rule_set_free(struct sptlrpc_rule_set *rset)
213{
214 LASSERT(rset->srs_nslot ||
215 (rset->srs_nrule == 0 && !rset->srs_rules));
216
217 if (rset->srs_nslot) {
218 kfree(rset->srs_rules);
219 sptlrpc_rule_set_init(rset);
220 }
221}
222
223
224
225
226static int sptlrpc_rule_set_expand(struct sptlrpc_rule_set *rset)
227{
228 struct sptlrpc_rule *rules;
229 int nslot;
230
231 might_sleep();
232
233 if (rset->srs_nrule < rset->srs_nslot)
234 return 0;
235
236 nslot = rset->srs_nslot + 8;
237
238
239 rules = kcalloc(nslot, sizeof(*rset->srs_rules), GFP_NOFS);
240 if (!rules)
241 return -ENOMEM;
242
243 if (rset->srs_nrule) {
244 LASSERT(rset->srs_nslot && rset->srs_rules);
245 memcpy(rules, rset->srs_rules,
246 rset->srs_nrule * sizeof(*rset->srs_rules));
247
248 kfree(rset->srs_rules);
249 }
250
251 rset->srs_rules = rules;
252 rset->srs_nslot = nslot;
253 return 0;
254}
255
256static inline int rule_spec_dir(struct sptlrpc_rule *rule)
257{
258 return (rule->sr_from != LUSTRE_SP_ANY ||
259 rule->sr_to != LUSTRE_SP_ANY);
260}
261
262static inline int rule_spec_net(struct sptlrpc_rule *rule)
263{
264 return (rule->sr_netid != LNET_NIDNET(LNET_NID_ANY));
265}
266
267static inline int rule_match_dir(struct sptlrpc_rule *r1,
268 struct sptlrpc_rule *r2)
269{
270 return (r1->sr_from == r2->sr_from && r1->sr_to == r2->sr_to);
271}
272
273static inline int rule_match_net(struct sptlrpc_rule *r1,
274 struct sptlrpc_rule *r2)
275{
276 return (r1->sr_netid == r2->sr_netid);
277}
278
279
280
281
282
283static int sptlrpc_rule_set_merge(struct sptlrpc_rule_set *rset,
284 struct sptlrpc_rule *rule)
285{
286 struct sptlrpc_rule *p = rset->srs_rules;
287 int spec_dir, spec_net;
288 int rc, n, match = 0;
289
290 might_sleep();
291
292 spec_net = rule_spec_net(rule);
293 spec_dir = rule_spec_dir(rule);
294
295 for (n = 0; n < rset->srs_nrule; n++) {
296 p = &rset->srs_rules[n];
297
298
299
300
301
302
303
304 if (!rule_match_net(p, rule)) {
305 if (spec_net) {
306 if (rule_spec_net(p))
307 continue;
308 else
309 break;
310 } else {
311 continue;
312 }
313 }
314
315
316 if (!rule_match_dir(p, rule)) {
317 if (spec_dir) {
318 if (rule_spec_dir(p))
319 continue;
320 else
321 break;
322 } else {
323 continue;
324 }
325 }
326
327
328 match = 1;
329 break;
330 }
331
332 if (match) {
333 LASSERT(n >= 0 && n < rset->srs_nrule);
334
335 if (rule->sr_flvr.sf_rpc == SPTLRPC_FLVR_INVALID) {
336
337 if (n < rset->srs_nrule - 1)
338 memmove(&rset->srs_rules[n],
339 &rset->srs_rules[n + 1],
340 (rset->srs_nrule - n - 1) *
341 sizeof(*rule));
342 rset->srs_nrule--;
343 } else {
344
345 memcpy(&rset->srs_rules[n], rule, sizeof(*rule));
346 }
347 } else {
348 LASSERT(n >= 0 && n <= rset->srs_nrule);
349
350 if (rule->sr_flvr.sf_rpc != SPTLRPC_FLVR_INVALID) {
351 rc = sptlrpc_rule_set_expand(rset);
352 if (rc)
353 return rc;
354
355 if (n < rset->srs_nrule)
356 memmove(&rset->srs_rules[n + 1],
357 &rset->srs_rules[n],
358 (rset->srs_nrule - n) * sizeof(*rule));
359 memcpy(&rset->srs_rules[n], rule, sizeof(*rule));
360 rset->srs_nrule++;
361 } else {
362 CDEBUG(D_CONFIG, "ignore the unmatched deletion\n");
363 }
364 }
365
366 return 0;
367}
368
369
370
371
372
373static int sptlrpc_rule_set_choose(struct sptlrpc_rule_set *rset,
374 enum lustre_sec_part from,
375 enum lustre_sec_part to,
376 lnet_nid_t nid,
377 struct sptlrpc_flavor *sf)
378{
379 struct sptlrpc_rule *r;
380 int n;
381
382 for (n = 0; n < rset->srs_nrule; n++) {
383 r = &rset->srs_rules[n];
384
385 if (LNET_NIDNET(nid) != LNET_NIDNET(LNET_NID_ANY) &&
386 r->sr_netid != LNET_NIDNET(LNET_NID_ANY) &&
387 LNET_NIDNET(nid) != r->sr_netid)
388 continue;
389
390 if (from != LUSTRE_SP_ANY && r->sr_from != LUSTRE_SP_ANY &&
391 from != r->sr_from)
392 continue;
393
394 if (to != LUSTRE_SP_ANY && r->sr_to != LUSTRE_SP_ANY &&
395 to != r->sr_to)
396 continue;
397
398 *sf = r->sr_flvr;
399 return 1;
400 }
401
402 return 0;
403}
404
405
406
407
408
409struct sptlrpc_conf_tgt {
410 struct list_head sct_list;
411 char sct_name[MAX_OBD_NAME];
412 struct sptlrpc_rule_set sct_rset;
413};
414
415struct sptlrpc_conf {
416 struct list_head sc_list;
417 char sc_fsname[MTI_NAME_MAXLEN];
418 unsigned int sc_modified;
419 unsigned int sc_updated:1,
420 sc_local:1;
421 struct sptlrpc_rule_set sc_rset;
422 struct list_head sc_tgts;
423};
424
425static struct mutex sptlrpc_conf_lock;
426static LIST_HEAD(sptlrpc_confs);
427
428static inline int is_hex(char c)
429{
430 return ((c >= '0' && c <= '9') ||
431 (c >= 'a' && c <= 'f'));
432}
433
434static void target2fsname(const char *tgt, char *fsname, int buflen)
435{
436 const char *ptr;
437 int len;
438
439 ptr = strrchr(tgt, '-');
440 if (ptr) {
441 if ((strncmp(ptr, "-MDT", 4) != 0 &&
442 strncmp(ptr, "-OST", 4) != 0) ||
443 !is_hex(ptr[4]) || !is_hex(ptr[5]) ||
444 !is_hex(ptr[6]) || !is_hex(ptr[7]))
445 ptr = NULL;
446 }
447
448
449 if (!ptr)
450 len = strlen(tgt);
451 else
452 len = ptr - tgt;
453
454 len = min(len, buflen - 1);
455 memcpy(fsname, tgt, len);
456 fsname[len] = '\0';
457}
458
459static void sptlrpc_conf_free_rsets(struct sptlrpc_conf *conf)
460{
461 struct sptlrpc_conf_tgt *conf_tgt, *conf_tgt_next;
462
463 sptlrpc_rule_set_free(&conf->sc_rset);
464
465 list_for_each_entry_safe(conf_tgt, conf_tgt_next,
466 &conf->sc_tgts, sct_list) {
467 sptlrpc_rule_set_free(&conf_tgt->sct_rset);
468 list_del(&conf_tgt->sct_list);
469 kfree(conf_tgt);
470 }
471 LASSERT(list_empty(&conf->sc_tgts));
472
473 conf->sc_updated = 0;
474 conf->sc_local = 0;
475}
476
477static void sptlrpc_conf_free(struct sptlrpc_conf *conf)
478{
479 CDEBUG(D_SEC, "free sptlrpc conf %s\n", conf->sc_fsname);
480
481 sptlrpc_conf_free_rsets(conf);
482 list_del(&conf->sc_list);
483 kfree(conf);
484}
485
486static
487struct sptlrpc_conf_tgt *sptlrpc_conf_get_tgt(struct sptlrpc_conf *conf,
488 const char *name,
489 int create)
490{
491 struct sptlrpc_conf_tgt *conf_tgt;
492
493 list_for_each_entry(conf_tgt, &conf->sc_tgts, sct_list) {
494 if (strcmp(conf_tgt->sct_name, name) == 0)
495 return conf_tgt;
496 }
497
498 if (!create)
499 return NULL;
500
501 conf_tgt = kzalloc(sizeof(*conf_tgt), GFP_NOFS);
502 if (conf_tgt) {
503 strlcpy(conf_tgt->sct_name, name, sizeof(conf_tgt->sct_name));
504 sptlrpc_rule_set_init(&conf_tgt->sct_rset);
505 list_add(&conf_tgt->sct_list, &conf->sc_tgts);
506 }
507
508 return conf_tgt;
509}
510
511static
512struct sptlrpc_conf *sptlrpc_conf_get(const char *fsname,
513 int create)
514{
515 struct sptlrpc_conf *conf;
516 size_t len;
517
518 list_for_each_entry(conf, &sptlrpc_confs, sc_list) {
519 if (strcmp(conf->sc_fsname, fsname) == 0)
520 return conf;
521 }
522
523 if (!create)
524 return NULL;
525
526 conf = kzalloc(sizeof(*conf), GFP_NOFS);
527 if (!conf)
528 return NULL;
529
530 len = strlcpy(conf->sc_fsname, fsname, sizeof(conf->sc_fsname));
531 if (len >= sizeof(conf->sc_fsname)) {
532 kfree(conf);
533 return NULL;
534 }
535 sptlrpc_rule_set_init(&conf->sc_rset);
536 INIT_LIST_HEAD(&conf->sc_tgts);
537 list_add(&conf->sc_list, &sptlrpc_confs);
538
539 CDEBUG(D_SEC, "create sptlrpc conf %s\n", conf->sc_fsname);
540 return conf;
541}
542
543
544
545
546static int sptlrpc_conf_merge_rule(struct sptlrpc_conf *conf,
547 const char *target,
548 struct sptlrpc_rule *rule)
549{
550 struct sptlrpc_conf_tgt *conf_tgt;
551 struct sptlrpc_rule_set *rule_set;
552
553
554 if (strcmp(conf->sc_fsname, target) == 0) {
555 rule_set = &conf->sc_rset;
556 } else {
557 conf_tgt = sptlrpc_conf_get_tgt(conf, target, 1);
558 if (conf_tgt) {
559 rule_set = &conf_tgt->sct_rset;
560 } else {
561 CERROR("out of memory, can't merge rule!\n");
562 return -ENOMEM;
563 }
564 }
565
566 return sptlrpc_rule_set_merge(rule_set, rule);
567}
568
569
570
571
572
573
574static int __sptlrpc_process_config(struct lustre_cfg *lcfg,
575 struct sptlrpc_conf *conf)
576{
577 char *target, *param;
578 char fsname[MTI_NAME_MAXLEN];
579 struct sptlrpc_rule rule;
580 int rc;
581
582 target = lustre_cfg_string(lcfg, 1);
583 if (!target) {
584 CERROR("missing target name\n");
585 return -EINVAL;
586 }
587
588 param = lustre_cfg_string(lcfg, 2);
589 if (!param) {
590 CERROR("missing parameter\n");
591 return -EINVAL;
592 }
593
594 CDEBUG(D_SEC, "processing rule: %s.%s\n", target, param);
595
596
597 if (strncmp(param, PARAM_SRPC_FLVR, sizeof(PARAM_SRPC_FLVR) - 1) != 0) {
598 CERROR("Invalid sptlrpc parameter: %s\n", param);
599 return -EINVAL;
600 }
601 param += sizeof(PARAM_SRPC_FLVR) - 1;
602
603 rc = sptlrpc_parse_rule(param, &rule);
604 if (rc)
605 return -EINVAL;
606
607 if (!conf) {
608 target2fsname(target, fsname, sizeof(fsname));
609
610 mutex_lock(&sptlrpc_conf_lock);
611 conf = sptlrpc_conf_get(fsname, 0);
612 if (!conf) {
613 CERROR("can't find conf\n");
614 rc = -ENOMEM;
615 } else {
616 rc = sptlrpc_conf_merge_rule(conf, target, &rule);
617 }
618 mutex_unlock(&sptlrpc_conf_lock);
619 } else {
620 LASSERT(mutex_is_locked(&sptlrpc_conf_lock));
621 rc = sptlrpc_conf_merge_rule(conf, target, &rule);
622 }
623
624 if (rc == 0)
625 conf->sc_modified++;
626
627 return rc;
628}
629
630int sptlrpc_process_config(struct lustre_cfg *lcfg)
631{
632 return __sptlrpc_process_config(lcfg, NULL);
633}
634EXPORT_SYMBOL(sptlrpc_process_config);
635
636static int logname2fsname(const char *logname, char *buf, int buflen)
637{
638 char *ptr;
639 int len;
640
641 ptr = strrchr(logname, '-');
642 if (!ptr || strcmp(ptr, "-sptlrpc")) {
643 CERROR("%s is not a sptlrpc config log\n", logname);
644 return -EINVAL;
645 }
646
647 len = min((int)(ptr - logname), buflen - 1);
648
649 memcpy(buf, logname, len);
650 buf[len] = '\0';
651 return 0;
652}
653
654void sptlrpc_conf_log_update_begin(const char *logname)
655{
656 struct sptlrpc_conf *conf;
657 char fsname[16];
658
659 if (logname2fsname(logname, fsname, sizeof(fsname)))
660 return;
661
662 mutex_lock(&sptlrpc_conf_lock);
663
664 conf = sptlrpc_conf_get(fsname, 0);
665 if (conf) {
666 if (conf->sc_local) {
667 LASSERT(conf->sc_updated == 0);
668 sptlrpc_conf_free_rsets(conf);
669 }
670 conf->sc_modified = 0;
671 }
672
673 mutex_unlock(&sptlrpc_conf_lock);
674}
675EXPORT_SYMBOL(sptlrpc_conf_log_update_begin);
676
677
678
679
680void sptlrpc_conf_log_update_end(const char *logname)
681{
682 struct sptlrpc_conf *conf;
683 char fsname[16];
684
685 if (logname2fsname(logname, fsname, sizeof(fsname)))
686 return;
687
688 mutex_lock(&sptlrpc_conf_lock);
689
690 conf = sptlrpc_conf_get(fsname, 0);
691 if (conf) {
692
693
694
695
696 if (conf->sc_updated == 0)
697 conf->sc_modified++;
698
699 conf->sc_updated = 1;
700 }
701
702 mutex_unlock(&sptlrpc_conf_lock);
703}
704EXPORT_SYMBOL(sptlrpc_conf_log_update_end);
705
706void sptlrpc_conf_log_start(const char *logname)
707{
708 char fsname[16];
709
710 if (logname2fsname(logname, fsname, sizeof(fsname)))
711 return;
712
713 mutex_lock(&sptlrpc_conf_lock);
714 sptlrpc_conf_get(fsname, 1);
715 mutex_unlock(&sptlrpc_conf_lock);
716}
717EXPORT_SYMBOL(sptlrpc_conf_log_start);
718
719void sptlrpc_conf_log_stop(const char *logname)
720{
721 struct sptlrpc_conf *conf;
722 char fsname[16];
723
724 if (logname2fsname(logname, fsname, sizeof(fsname)))
725 return;
726
727 mutex_lock(&sptlrpc_conf_lock);
728 conf = sptlrpc_conf_get(fsname, 0);
729 if (conf)
730 sptlrpc_conf_free(conf);
731 mutex_unlock(&sptlrpc_conf_lock);
732}
733EXPORT_SYMBOL(sptlrpc_conf_log_stop);
734
735static inline void flavor_set_flags(struct sptlrpc_flavor *sf,
736 enum lustre_sec_part from,
737 enum lustre_sec_part to,
738 unsigned int fl_udesc)
739{
740
741
742
743
744 if (sf->sf_rpc == SPTLRPC_FLVR_NULL)
745 return;
746
747 if (from == LUSTRE_SP_MDT) {
748
749 sf->sf_flags |= PTLRPC_SEC_FL_ROOTONLY;
750 } else if (from == LUSTRE_SP_CLI && to == LUSTRE_SP_OST) {
751
752 sf->sf_flags |= PTLRPC_SEC_FL_ROOTONLY | PTLRPC_SEC_FL_BULK;
753 } else if (from == LUSTRE_SP_CLI && to == LUSTRE_SP_MDT) {
754
755 if (fl_udesc && sf->sf_rpc != SPTLRPC_FLVR_NULL)
756 sf->sf_flags |= PTLRPC_SEC_FL_UDESC;
757 }
758}
759
760void sptlrpc_conf_choose_flavor(enum lustre_sec_part from,
761 enum lustre_sec_part to,
762 struct obd_uuid *target,
763 lnet_nid_t nid,
764 struct sptlrpc_flavor *sf)
765{
766 struct sptlrpc_conf *conf;
767 struct sptlrpc_conf_tgt *conf_tgt;
768 char name[MTI_NAME_MAXLEN];
769 int len, rc = 0;
770
771 target2fsname(target->uuid, name, sizeof(name));
772
773 mutex_lock(&sptlrpc_conf_lock);
774
775 conf = sptlrpc_conf_get(name, 0);
776 if (!conf)
777 goto out;
778
779
780 len = strlen(target->uuid);
781 LASSERT(len > 5);
782 memcpy(name, target->uuid, len - 5);
783 name[len - 5] = '\0';
784
785 conf_tgt = sptlrpc_conf_get_tgt(conf, name, 0);
786 if (conf_tgt) {
787 rc = sptlrpc_rule_set_choose(&conf_tgt->sct_rset,
788 from, to, nid, sf);
789 if (rc)
790 goto out;
791 }
792
793 rc = sptlrpc_rule_set_choose(&conf->sc_rset, from, to, nid, sf);
794out:
795 mutex_unlock(&sptlrpc_conf_lock);
796
797 if (rc == 0)
798 get_default_flavor(sf);
799
800 flavor_set_flags(sf, from, to, 1);
801}
802
803#define SEC_ADAPT_DELAY (10)
804
805
806
807
808
809void sptlrpc_conf_client_adapt(struct obd_device *obd)
810{
811 struct obd_import *imp;
812
813 LASSERT(strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) == 0 ||
814 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) == 0);
815 CDEBUG(D_SEC, "obd %s\n", obd->u.cli.cl_target_uuid.uuid);
816
817
818 down_read_nested(&obd->u.cli.cl_sem, OBD_CLI_SEM_MDCOSC);
819
820 imp = obd->u.cli.cl_import;
821 if (imp) {
822 spin_lock(&imp->imp_lock);
823 if (imp->imp_sec)
824 imp->imp_sec_expire = ktime_get_real_seconds() +
825 SEC_ADAPT_DELAY;
826 spin_unlock(&imp->imp_lock);
827 }
828
829 up_read(&obd->u.cli.cl_sem);
830}
831EXPORT_SYMBOL(sptlrpc_conf_client_adapt);
832
833int sptlrpc_conf_init(void)
834{
835 mutex_init(&sptlrpc_conf_lock);
836 return 0;
837}
838
839void sptlrpc_conf_fini(void)
840{
841 struct sptlrpc_conf *conf, *conf_next;
842
843 mutex_lock(&sptlrpc_conf_lock);
844 list_for_each_entry_safe(conf, conf_next, &sptlrpc_confs, sc_list) {
845 sptlrpc_conf_free(conf);
846 }
847 LASSERT(list_empty(&sptlrpc_confs));
848 mutex_unlock(&sptlrpc_conf_lock);
849}
850