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37#define DEBUG_SUBSYSTEM S_SEC
38
39#include "../../include/linux/libcfs/libcfs.h"
40#include <linux/crypto.h>
41#include <linux/key.h>
42
43#include "../include/obd.h"
44#include "../include/obd_support.h"
45#include "../include/lustre_import.h"
46#include "../include/lustre_param.h"
47#include "../include/lustre_sec.h"
48
49#include "ptlrpc_internal.h"
50
51const char *sptlrpc_part2name(enum lustre_sec_part part)
52{
53 switch (part) {
54 case LUSTRE_SP_CLI:
55 return "cli";
56 case LUSTRE_SP_MDT:
57 return "mdt";
58 case LUSTRE_SP_OST:
59 return "ost";
60 case LUSTRE_SP_MGC:
61 return "mgc";
62 case LUSTRE_SP_MGS:
63 return "mgs";
64 case LUSTRE_SP_ANY:
65 return "any";
66 default:
67 return "err";
68 }
69}
70EXPORT_SYMBOL(sptlrpc_part2name);
71
72enum lustre_sec_part sptlrpc_target_sec_part(struct obd_device *obd)
73{
74 const char *type = obd->obd_type->typ_name;
75
76 if (!strcmp(type, LUSTRE_MDT_NAME))
77 return LUSTRE_SP_MDT;
78 if (!strcmp(type, LUSTRE_OST_NAME))
79 return LUSTRE_SP_OST;
80 if (!strcmp(type, LUSTRE_MGS_NAME))
81 return LUSTRE_SP_MGS;
82
83 CERROR("unknown target %p(%s)\n", obd, type);
84 return LUSTRE_SP_ANY;
85}
86EXPORT_SYMBOL(sptlrpc_target_sec_part);
87
88
89
90
91
92
93
94
95int sptlrpc_parse_flavor(const char *str, struct sptlrpc_flavor *flvr)
96{
97 char buf[32];
98 char *bulk, *alg;
99
100 memset(flvr, 0, sizeof(*flvr));
101
102 if (str == NULL || str[0] == '\0') {
103 flvr->sf_rpc = SPTLRPC_FLVR_INVALID;
104 return 0;
105 }
106
107 strncpy(buf, str, sizeof(buf));
108 buf[sizeof(buf) - 1] = '\0';
109
110 bulk = strchr(buf, '-');
111 if (bulk)
112 *bulk++ = '\0';
113
114 flvr->sf_rpc = sptlrpc_name2flavor_base(buf);
115 if (flvr->sf_rpc == SPTLRPC_FLVR_INVALID)
116 goto err_out;
117
118
119
120
121 if (flvr->sf_rpc == SPTLRPC_FLVR_PLAIN) {
122 flvr->u_bulk.hash.hash_alg = BULK_HASH_ALG_ADLER32;
123 if (bulk) {
124
125
126
127 alg = strchr(bulk, ':');
128 if (alg == NULL)
129 goto err_out;
130 *alg++ = '\0';
131
132 if (strcmp(bulk, "hash"))
133 goto err_out;
134
135 flvr->u_bulk.hash.hash_alg = sptlrpc_get_hash_alg(alg);
136 if (flvr->u_bulk.hash.hash_alg >= BULK_HASH_ALG_MAX)
137 goto err_out;
138 }
139
140 if (flvr->u_bulk.hash.hash_alg == BULK_HASH_ALG_NULL)
141 flvr_set_bulk_svc(&flvr->sf_rpc, SPTLRPC_BULK_SVC_NULL);
142 else
143 flvr_set_bulk_svc(&flvr->sf_rpc, SPTLRPC_BULK_SVC_INTG);
144 } else {
145 if (bulk)
146 goto err_out;
147 }
148
149 flvr->sf_flags = 0;
150 return 0;
151
152err_out:
153 CERROR("invalid flavor string: %s\n", str);
154 return -EINVAL;
155}
156EXPORT_SYMBOL(sptlrpc_parse_flavor);
157
158
159
160
161
162static void get_default_flavor(struct sptlrpc_flavor *sf)
163{
164 memset(sf, 0, sizeof(*sf));
165
166 sf->sf_rpc = SPTLRPC_FLVR_NULL;
167 sf->sf_flags = 0;
168}
169
170static void sptlrpc_rule_init(struct sptlrpc_rule *rule)
171{
172 rule->sr_netid = LNET_NIDNET(LNET_NID_ANY);
173 rule->sr_from = LUSTRE_SP_ANY;
174 rule->sr_to = LUSTRE_SP_ANY;
175 rule->sr_padding = 0;
176
177 get_default_flavor(&rule->sr_flvr);
178}
179
180
181
182
183int sptlrpc_parse_rule(char *param, struct sptlrpc_rule *rule)
184{
185 char *flavor, *dir;
186 int rc;
187
188 sptlrpc_rule_init(rule);
189
190 flavor = strchr(param, '=');
191 if (flavor == NULL) {
192 CERROR("invalid param, no '='\n");
193 return -EINVAL;
194 }
195 *flavor++ = '\0';
196
197 dir = strchr(param, '.');
198 if (dir)
199 *dir++ = '\0';
200
201
202 if (strcmp(param, "default")) {
203 rule->sr_netid = libcfs_str2net(param);
204 if (rule->sr_netid == LNET_NIDNET(LNET_NID_ANY)) {
205 CERROR("invalid network name: %s\n", param);
206 return -EINVAL;
207 }
208 }
209
210
211 if (dir) {
212 if (!strcmp(dir, "mdt2ost")) {
213 rule->sr_from = LUSTRE_SP_MDT;
214 rule->sr_to = LUSTRE_SP_OST;
215 } else if (!strcmp(dir, "mdt2mdt")) {
216 rule->sr_from = LUSTRE_SP_MDT;
217 rule->sr_to = LUSTRE_SP_MDT;
218 } else if (!strcmp(dir, "cli2ost")) {
219 rule->sr_from = LUSTRE_SP_CLI;
220 rule->sr_to = LUSTRE_SP_OST;
221 } else if (!strcmp(dir, "cli2mdt")) {
222 rule->sr_from = LUSTRE_SP_CLI;
223 rule->sr_to = LUSTRE_SP_MDT;
224 } else {
225 CERROR("invalid rule dir segment: %s\n", dir);
226 return -EINVAL;
227 }
228 }
229
230
231 rc = sptlrpc_parse_flavor(flavor, &rule->sr_flvr);
232 if (rc)
233 return -EINVAL;
234
235 return 0;
236}
237EXPORT_SYMBOL(sptlrpc_parse_rule);
238
239void sptlrpc_rule_set_free(struct sptlrpc_rule_set *rset)
240{
241 LASSERT(rset->srs_nslot ||
242 (rset->srs_nrule == 0 && rset->srs_rules == NULL));
243
244 if (rset->srs_nslot) {
245 OBD_FREE(rset->srs_rules,
246 rset->srs_nslot * sizeof(*rset->srs_rules));
247 sptlrpc_rule_set_init(rset);
248 }
249}
250EXPORT_SYMBOL(sptlrpc_rule_set_free);
251
252
253
254
255int sptlrpc_rule_set_expand(struct sptlrpc_rule_set *rset)
256{
257 struct sptlrpc_rule *rules;
258 int nslot;
259
260 might_sleep();
261
262 if (rset->srs_nrule < rset->srs_nslot)
263 return 0;
264
265 nslot = rset->srs_nslot + 8;
266
267
268 OBD_ALLOC(rules, nslot * sizeof(*rset->srs_rules));
269 if (rules == NULL)
270 return -ENOMEM;
271
272 if (rset->srs_nrule) {
273 LASSERT(rset->srs_nslot && rset->srs_rules);
274 memcpy(rules, rset->srs_rules,
275 rset->srs_nrule * sizeof(*rset->srs_rules));
276
277 OBD_FREE(rset->srs_rules,
278 rset->srs_nslot * sizeof(*rset->srs_rules));
279 }
280
281 rset->srs_rules = rules;
282 rset->srs_nslot = nslot;
283 return 0;
284}
285EXPORT_SYMBOL(sptlrpc_rule_set_expand);
286
287static inline int rule_spec_dir(struct sptlrpc_rule *rule)
288{
289 return (rule->sr_from != LUSTRE_SP_ANY ||
290 rule->sr_to != LUSTRE_SP_ANY);
291}
292static inline int rule_spec_net(struct sptlrpc_rule *rule)
293{
294 return (rule->sr_netid != LNET_NIDNET(LNET_NID_ANY));
295}
296static inline int rule_match_dir(struct sptlrpc_rule *r1,
297 struct sptlrpc_rule *r2)
298{
299 return (r1->sr_from == r2->sr_from && r1->sr_to == r2->sr_to);
300}
301static inline int rule_match_net(struct sptlrpc_rule *r1,
302 struct sptlrpc_rule *r2)
303{
304 return (r1->sr_netid == r2->sr_netid);
305}
306
307
308
309
310
311int sptlrpc_rule_set_merge(struct sptlrpc_rule_set *rset,
312 struct sptlrpc_rule *rule)
313{
314 struct sptlrpc_rule *p = rset->srs_rules;
315 int spec_dir, spec_net;
316 int rc, n, match = 0;
317
318 might_sleep();
319
320 spec_net = rule_spec_net(rule);
321 spec_dir = rule_spec_dir(rule);
322
323 for (n = 0; n < rset->srs_nrule; n++) {
324 p = &rset->srs_rules[n];
325
326
327
328
329
330
331
332 if (!rule_match_net(p, rule)) {
333 if (spec_net) {
334 if (rule_spec_net(p))
335 continue;
336 else
337 break;
338 } else {
339 continue;
340 }
341 }
342
343
344 if (!rule_match_dir(p, rule)) {
345 if (spec_dir) {
346 if (rule_spec_dir(p))
347 continue;
348 else
349 break;
350 } else {
351 continue;
352 }
353 }
354
355
356 match = 1;
357 break;
358 }
359
360 if (match) {
361 LASSERT(n >= 0 && n < rset->srs_nrule);
362
363 if (rule->sr_flvr.sf_rpc == SPTLRPC_FLVR_INVALID) {
364
365 if (n < rset->srs_nrule - 1)
366 memmove(&rset->srs_rules[n],
367 &rset->srs_rules[n + 1],
368 (rset->srs_nrule - n - 1) *
369 sizeof(*rule));
370 rset->srs_nrule--;
371 } else {
372
373 memcpy(&rset->srs_rules[n], rule, sizeof(*rule));
374 }
375 } else {
376 LASSERT(n >= 0 && n <= rset->srs_nrule);
377
378 if (rule->sr_flvr.sf_rpc != SPTLRPC_FLVR_INVALID) {
379 rc = sptlrpc_rule_set_expand(rset);
380 if (rc)
381 return rc;
382
383 if (n < rset->srs_nrule)
384 memmove(&rset->srs_rules[n + 1],
385 &rset->srs_rules[n],
386 (rset->srs_nrule - n) * sizeof(*rule));
387 memcpy(&rset->srs_rules[n], rule, sizeof(*rule));
388 rset->srs_nrule++;
389 } else {
390 CDEBUG(D_CONFIG, "ignore the unmatched deletion\n");
391 }
392 }
393
394 return 0;
395}
396EXPORT_SYMBOL(sptlrpc_rule_set_merge);
397
398
399
400
401
402int sptlrpc_rule_set_choose(struct sptlrpc_rule_set *rset,
403 enum lustre_sec_part from,
404 enum lustre_sec_part to,
405 lnet_nid_t nid,
406 struct sptlrpc_flavor *sf)
407{
408 struct sptlrpc_rule *r;
409 int n;
410
411 for (n = 0; n < rset->srs_nrule; n++) {
412 r = &rset->srs_rules[n];
413
414 if (LNET_NIDNET(nid) != LNET_NIDNET(LNET_NID_ANY) &&
415 r->sr_netid != LNET_NIDNET(LNET_NID_ANY) &&
416 LNET_NIDNET(nid) != r->sr_netid)
417 continue;
418
419 if (from != LUSTRE_SP_ANY && r->sr_from != LUSTRE_SP_ANY &&
420 from != r->sr_from)
421 continue;
422
423 if (to != LUSTRE_SP_ANY && r->sr_to != LUSTRE_SP_ANY &&
424 to != r->sr_to)
425 continue;
426
427 *sf = r->sr_flvr;
428 return 1;
429 }
430
431 return 0;
432}
433EXPORT_SYMBOL(sptlrpc_rule_set_choose);
434
435void sptlrpc_rule_set_dump(struct sptlrpc_rule_set *rset)
436{
437 struct sptlrpc_rule *r;
438 int n;
439
440 for (n = 0; n < rset->srs_nrule; n++) {
441 r = &rset->srs_rules[n];
442 CDEBUG(D_SEC, "<%02d> from %x to %x, net %x, rpc %x\n", n,
443 r->sr_from, r->sr_to, r->sr_netid, r->sr_flvr.sf_rpc);
444 }
445}
446EXPORT_SYMBOL(sptlrpc_rule_set_dump);
447
448
449
450
451
452struct sptlrpc_conf_tgt {
453 struct list_head sct_list;
454 char sct_name[MAX_OBD_NAME];
455 struct sptlrpc_rule_set sct_rset;
456};
457
458struct sptlrpc_conf {
459 struct list_head sc_list;
460 char sc_fsname[MTI_NAME_MAXLEN];
461 unsigned int sc_modified;
462 unsigned int sc_updated:1,
463 sc_local:1;
464 struct sptlrpc_rule_set sc_rset;
465 struct list_head sc_tgts;
466};
467
468static struct mutex sptlrpc_conf_lock;
469static LIST_HEAD(sptlrpc_confs);
470
471static inline int is_hex(char c)
472{
473 return ((c >= '0' && c <= '9') ||
474 (c >= 'a' && c <= 'f'));
475}
476
477static void target2fsname(const char *tgt, char *fsname, int buflen)
478{
479 const char *ptr;
480 int len;
481
482 ptr = strrchr(tgt, '-');
483 if (ptr) {
484 if ((strncmp(ptr, "-MDT", 4) != 0 &&
485 strncmp(ptr, "-OST", 4) != 0) ||
486 !is_hex(ptr[4]) || !is_hex(ptr[5]) ||
487 !is_hex(ptr[6]) || !is_hex(ptr[7]))
488 ptr = NULL;
489 }
490
491
492 if (ptr == NULL)
493 len = strlen(tgt);
494 else
495 len = ptr - tgt;
496
497 len = min(len, buflen - 1);
498 memcpy(fsname, tgt, len);
499 fsname[len] = '\0';
500}
501
502static void sptlrpc_conf_free_rsets(struct sptlrpc_conf *conf)
503{
504 struct sptlrpc_conf_tgt *conf_tgt, *conf_tgt_next;
505
506 sptlrpc_rule_set_free(&conf->sc_rset);
507
508 list_for_each_entry_safe(conf_tgt, conf_tgt_next,
509 &conf->sc_tgts, sct_list) {
510 sptlrpc_rule_set_free(&conf_tgt->sct_rset);
511 list_del(&conf_tgt->sct_list);
512 OBD_FREE_PTR(conf_tgt);
513 }
514 LASSERT(list_empty(&conf->sc_tgts));
515
516 conf->sc_updated = 0;
517 conf->sc_local = 0;
518}
519
520static void sptlrpc_conf_free(struct sptlrpc_conf *conf)
521{
522 CDEBUG(D_SEC, "free sptlrpc conf %s\n", conf->sc_fsname);
523
524 sptlrpc_conf_free_rsets(conf);
525 list_del(&conf->sc_list);
526 OBD_FREE_PTR(conf);
527}
528
529static
530struct sptlrpc_conf_tgt *sptlrpc_conf_get_tgt(struct sptlrpc_conf *conf,
531 const char *name,
532 int create)
533{
534 struct sptlrpc_conf_tgt *conf_tgt;
535
536 list_for_each_entry(conf_tgt, &conf->sc_tgts, sct_list) {
537 if (strcmp(conf_tgt->sct_name, name) == 0)
538 return conf_tgt;
539 }
540
541 if (!create)
542 return NULL;
543
544 OBD_ALLOC_PTR(conf_tgt);
545 if (conf_tgt) {
546 strlcpy(conf_tgt->sct_name, name, sizeof(conf_tgt->sct_name));
547 sptlrpc_rule_set_init(&conf_tgt->sct_rset);
548 list_add(&conf_tgt->sct_list, &conf->sc_tgts);
549 }
550
551 return conf_tgt;
552}
553
554static
555struct sptlrpc_conf *sptlrpc_conf_get(const char *fsname,
556 int create)
557{
558 struct sptlrpc_conf *conf;
559
560 list_for_each_entry(conf, &sptlrpc_confs, sc_list) {
561 if (strcmp(conf->sc_fsname, fsname) == 0)
562 return conf;
563 }
564
565 if (!create)
566 return NULL;
567
568 OBD_ALLOC_PTR(conf);
569 if (conf == NULL)
570 return NULL;
571
572 strcpy(conf->sc_fsname, fsname);
573 sptlrpc_rule_set_init(&conf->sc_rset);
574 INIT_LIST_HEAD(&conf->sc_tgts);
575 list_add(&conf->sc_list, &sptlrpc_confs);
576
577 CDEBUG(D_SEC, "create sptlrpc conf %s\n", conf->sc_fsname);
578 return conf;
579}
580
581
582
583
584static int sptlrpc_conf_merge_rule(struct sptlrpc_conf *conf,
585 const char *target,
586 struct sptlrpc_rule *rule)
587{
588 struct sptlrpc_conf_tgt *conf_tgt;
589 struct sptlrpc_rule_set *rule_set;
590
591
592 if (strcmp(conf->sc_fsname, target) == 0) {
593 rule_set = &conf->sc_rset;
594 } else {
595 conf_tgt = sptlrpc_conf_get_tgt(conf, target, 1);
596 if (conf_tgt) {
597 rule_set = &conf_tgt->sct_rset;
598 } else {
599 CERROR("out of memory, can't merge rule!\n");
600 return -ENOMEM;
601 }
602 }
603
604 return sptlrpc_rule_set_merge(rule_set, rule);
605}
606
607
608
609
610
611
612static int __sptlrpc_process_config(struct lustre_cfg *lcfg,
613 struct sptlrpc_conf *conf)
614{
615 char *target, *param;
616 char fsname[MTI_NAME_MAXLEN];
617 struct sptlrpc_rule rule;
618 int rc;
619
620 target = lustre_cfg_string(lcfg, 1);
621 if (target == NULL) {
622 CERROR("missing target name\n");
623 return -EINVAL;
624 }
625
626 param = lustre_cfg_string(lcfg, 2);
627 if (param == NULL) {
628 CERROR("missing parameter\n");
629 return -EINVAL;
630 }
631
632 CDEBUG(D_SEC, "processing rule: %s.%s\n", target, param);
633
634
635 if (strncmp(param, PARAM_SRPC_FLVR, sizeof(PARAM_SRPC_FLVR) - 1) != 0) {
636 CERROR("Invalid sptlrpc parameter: %s\n", param);
637 return -EINVAL;
638 }
639 param += sizeof(PARAM_SRPC_FLVR) - 1;
640
641 rc = sptlrpc_parse_rule(param, &rule);
642 if (rc)
643 return -EINVAL;
644
645 if (conf == NULL) {
646 target2fsname(target, fsname, sizeof(fsname));
647
648 mutex_lock(&sptlrpc_conf_lock);
649 conf = sptlrpc_conf_get(fsname, 0);
650 if (conf == NULL) {
651 CERROR("can't find conf\n");
652 rc = -ENOMEM;
653 } else {
654 rc = sptlrpc_conf_merge_rule(conf, target, &rule);
655 }
656 mutex_unlock(&sptlrpc_conf_lock);
657 } else {
658 LASSERT(mutex_is_locked(&sptlrpc_conf_lock));
659 rc = sptlrpc_conf_merge_rule(conf, target, &rule);
660 }
661
662 if (rc == 0)
663 conf->sc_modified++;
664
665 return rc;
666}
667
668int sptlrpc_process_config(struct lustre_cfg *lcfg)
669{
670 return __sptlrpc_process_config(lcfg, NULL);
671}
672EXPORT_SYMBOL(sptlrpc_process_config);
673
674static int logname2fsname(const char *logname, char *buf, int buflen)
675{
676 char *ptr;
677 int len;
678
679 ptr = strrchr(logname, '-');
680 if (ptr == NULL || strcmp(ptr, "-sptlrpc")) {
681 CERROR("%s is not a sptlrpc config log\n", logname);
682 return -EINVAL;
683 }
684
685 len = min((int) (ptr - logname), buflen - 1);
686
687 memcpy(buf, logname, len);
688 buf[len] = '\0';
689 return 0;
690}
691
692void sptlrpc_conf_log_update_begin(const char *logname)
693{
694 struct sptlrpc_conf *conf;
695 char fsname[16];
696
697 if (logname2fsname(logname, fsname, sizeof(fsname)))
698 return;
699
700 mutex_lock(&sptlrpc_conf_lock);
701
702 conf = sptlrpc_conf_get(fsname, 0);
703 if (conf) {
704 if (conf->sc_local) {
705 LASSERT(conf->sc_updated == 0);
706 sptlrpc_conf_free_rsets(conf);
707 }
708 conf->sc_modified = 0;
709 }
710
711 mutex_unlock(&sptlrpc_conf_lock);
712}
713EXPORT_SYMBOL(sptlrpc_conf_log_update_begin);
714
715
716
717
718void sptlrpc_conf_log_update_end(const char *logname)
719{
720 struct sptlrpc_conf *conf;
721 char fsname[16];
722
723 if (logname2fsname(logname, fsname, sizeof(fsname)))
724 return;
725
726 mutex_lock(&sptlrpc_conf_lock);
727
728 conf = sptlrpc_conf_get(fsname, 0);
729 if (conf) {
730
731
732
733
734 if (conf->sc_updated == 0)
735 conf->sc_modified++;
736
737 conf->sc_updated = 1;
738 }
739
740 mutex_unlock(&sptlrpc_conf_lock);
741}
742EXPORT_SYMBOL(sptlrpc_conf_log_update_end);
743
744void sptlrpc_conf_log_start(const char *logname)
745{
746 char fsname[16];
747
748 if (logname2fsname(logname, fsname, sizeof(fsname)))
749 return;
750
751 mutex_lock(&sptlrpc_conf_lock);
752 sptlrpc_conf_get(fsname, 1);
753 mutex_unlock(&sptlrpc_conf_lock);
754}
755EXPORT_SYMBOL(sptlrpc_conf_log_start);
756
757void sptlrpc_conf_log_stop(const char *logname)
758{
759 struct sptlrpc_conf *conf;
760 char fsname[16];
761
762 if (logname2fsname(logname, fsname, sizeof(fsname)))
763 return;
764
765 mutex_lock(&sptlrpc_conf_lock);
766 conf = sptlrpc_conf_get(fsname, 0);
767 if (conf)
768 sptlrpc_conf_free(conf);
769 mutex_unlock(&sptlrpc_conf_lock);
770}
771EXPORT_SYMBOL(sptlrpc_conf_log_stop);
772
773static inline void flavor_set_flags(struct sptlrpc_flavor *sf,
774 enum lustre_sec_part from,
775 enum lustre_sec_part to,
776 unsigned int fl_udesc)
777{
778
779
780
781
782 if (sf->sf_rpc == SPTLRPC_FLVR_NULL)
783 return;
784
785 if (from == LUSTRE_SP_MDT) {
786
787 sf->sf_flags |= PTLRPC_SEC_FL_ROOTONLY;
788 } else if (from == LUSTRE_SP_CLI && to == LUSTRE_SP_OST) {
789
790 sf->sf_flags |= PTLRPC_SEC_FL_ROOTONLY | PTLRPC_SEC_FL_BULK;
791 } else if (from == LUSTRE_SP_CLI && to == LUSTRE_SP_MDT) {
792
793 if (fl_udesc && sf->sf_rpc != SPTLRPC_FLVR_NULL)
794 sf->sf_flags |= PTLRPC_SEC_FL_UDESC;
795 }
796}
797
798void sptlrpc_conf_choose_flavor(enum lustre_sec_part from,
799 enum lustre_sec_part to,
800 struct obd_uuid *target,
801 lnet_nid_t nid,
802 struct sptlrpc_flavor *sf)
803{
804 struct sptlrpc_conf *conf;
805 struct sptlrpc_conf_tgt *conf_tgt;
806 char name[MTI_NAME_MAXLEN];
807 int len, rc = 0;
808
809 target2fsname(target->uuid, name, sizeof(name));
810
811 mutex_lock(&sptlrpc_conf_lock);
812
813 conf = sptlrpc_conf_get(name, 0);
814 if (conf == NULL)
815 goto out;
816
817
818 len = strlen(target->uuid);
819 LASSERT(len > 5);
820 memcpy(name, target->uuid, len - 5);
821 name[len - 5] = '\0';
822
823 conf_tgt = sptlrpc_conf_get_tgt(conf, name, 0);
824 if (conf_tgt) {
825 rc = sptlrpc_rule_set_choose(&conf_tgt->sct_rset,
826 from, to, nid, sf);
827 if (rc)
828 goto out;
829 }
830
831 rc = sptlrpc_rule_set_choose(&conf->sc_rset, from, to, nid, sf);
832out:
833 mutex_unlock(&sptlrpc_conf_lock);
834
835 if (rc == 0)
836 get_default_flavor(sf);
837
838 flavor_set_flags(sf, from, to, 1);
839}
840
841
842
843
844
845void sptlrpc_target_choose_flavor(struct sptlrpc_rule_set *rset,
846 enum lustre_sec_part from,
847 lnet_nid_t nid,
848 struct sptlrpc_flavor *sf)
849{
850 if (sptlrpc_rule_set_choose(rset, from, LUSTRE_SP_ANY, nid, sf) == 0)
851 get_default_flavor(sf);
852}
853EXPORT_SYMBOL(sptlrpc_target_choose_flavor);
854
855#define SEC_ADAPT_DELAY (10)
856
857
858
859
860
861void sptlrpc_conf_client_adapt(struct obd_device *obd)
862{
863 struct obd_import *imp;
864
865 LASSERT(strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) == 0 ||
866 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) == 0);
867 CDEBUG(D_SEC, "obd %s\n", obd->u.cli.cl_target_uuid.uuid);
868
869
870 down_read(&obd->u.cli.cl_sem);
871
872 imp = obd->u.cli.cl_import;
873 if (imp) {
874 spin_lock(&imp->imp_lock);
875 if (imp->imp_sec)
876 imp->imp_sec_expire = get_seconds() +
877 SEC_ADAPT_DELAY;
878 spin_unlock(&imp->imp_lock);
879 }
880
881 up_read(&obd->u.cli.cl_sem);
882}
883EXPORT_SYMBOL(sptlrpc_conf_client_adapt);
884
885int sptlrpc_conf_init(void)
886{
887 mutex_init(&sptlrpc_conf_lock);
888 return 0;
889}
890
891void sptlrpc_conf_fini(void)
892{
893 struct sptlrpc_conf *conf, *conf_next;
894
895 mutex_lock(&sptlrpc_conf_lock);
896 list_for_each_entry_safe(conf, conf_next, &sptlrpc_confs, sc_list) {
897 sptlrpc_conf_free(conf);
898 }
899 LASSERT(list_empty(&sptlrpc_confs));
900 mutex_unlock(&sptlrpc_conf_lock);
901}
902