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38#define DEBUG_SUBSYSTEM S_CLASS
39
40#include <linux/string.h>
41
42#include <uapi/linux/lustre/lustre_ioctl.h>
43#include <llog_swab.h>
44#include <lprocfs_status.h>
45#include <lustre_log.h>
46#include <uapi/linux/lustre/lustre_param.h>
47#include <obd_class.h>
48
49#include "llog_internal.h"
50
51static struct cfs_hash_ops uuid_hash_ops;
52
53
54
55
56int class_find_param(char *buf, char *key, char **valp)
57{
58 char *ptr;
59
60 if (!buf)
61 return 1;
62
63 ptr = strstr(buf, key);
64 if (!ptr)
65 return 1;
66
67 if (valp)
68 *valp = ptr + strlen(key);
69
70 return 0;
71}
72EXPORT_SYMBOL(class_find_param);
73
74
75
76
77static int class_match_param(char *buf, const char *key, char **valp)
78{
79 if (!buf)
80 return 1;
81
82 if (memcmp(buf, key, strlen(key)) != 0)
83 return 1;
84
85 if (valp)
86 *valp = buf + strlen(key);
87
88 return 0;
89}
90
91static int parse_nid(char *buf, void *value, int quiet)
92{
93 lnet_nid_t *nid = value;
94
95 *nid = libcfs_str2nid(buf);
96 if (*nid != LNET_NID_ANY)
97 return 0;
98
99 if (!quiet)
100 LCONSOLE_ERROR_MSG(0x159, "Can't parse NID '%s'\n", buf);
101 return -EINVAL;
102}
103
104static int parse_net(char *buf, void *value)
105{
106 __u32 *net = value;
107
108 *net = libcfs_str2net(buf);
109 CDEBUG(D_INFO, "Net %s\n", libcfs_net2str(*net));
110 return 0;
111}
112
113enum {
114 CLASS_PARSE_NID = 1,
115 CLASS_PARSE_NET,
116};
117
118
119
120
121
122
123static int class_parse_value(char *buf, int opc, void *value, char **endh,
124 int quiet)
125{
126 char *endp;
127 char tmp;
128 int rc = 0;
129
130 if (!buf)
131 return 1;
132 while (*buf == ',' || *buf == ':')
133 buf++;
134 if (*buf == ' ' || *buf == '/' || *buf == '\0')
135 return 1;
136
137
138 endp = strpbrk(buf, ",: /");
139 if (!endp)
140 endp = buf + strlen(buf);
141
142 tmp = *endp;
143 *endp = '\0';
144 switch (opc) {
145 default:
146 LBUG();
147 case CLASS_PARSE_NID:
148 rc = parse_nid(buf, value, quiet);
149 break;
150 case CLASS_PARSE_NET:
151 rc = parse_net(buf, value);
152 break;
153 }
154 *endp = tmp;
155 if (rc != 0)
156 return rc;
157 if (endh)
158 *endh = endp;
159 return 0;
160}
161
162int class_parse_nid(char *buf, lnet_nid_t *nid, char **endh)
163{
164 return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh, 0);
165}
166EXPORT_SYMBOL(class_parse_nid);
167
168int class_parse_nid_quiet(char *buf, lnet_nid_t *nid, char **endh)
169{
170 return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh, 1);
171}
172EXPORT_SYMBOL(class_parse_nid_quiet);
173
174char *lustre_cfg_string(struct lustre_cfg *lcfg, u32 index)
175{
176 char *s;
177
178 if (!lcfg->lcfg_buflens[index])
179 return NULL;
180
181 s = lustre_cfg_buf(lcfg, index);
182 if (!s)
183 return NULL;
184
185
186
187
188
189 if (s[lcfg->lcfg_buflens[index] - 1] != '\0') {
190 size_t last = ALIGN(lcfg->lcfg_buflens[index], 8) - 1;
191 char lost;
192
193
194 if (last > lcfg->lcfg_buflens[index])
195 last = lcfg->lcfg_buflens[index];
196
197 lost = s[last];
198 s[last] = '\0';
199 if (lost != '\0') {
200 CWARN("Truncated buf %d to '%s' (lost '%c'...)\n",
201 index, s, lost);
202 }
203 }
204 return s;
205}
206EXPORT_SYMBOL(lustre_cfg_string);
207
208
209
210
211
212
213
214static int class_attach(struct lustre_cfg *lcfg)
215{
216 struct obd_device *obd = NULL;
217 char *typename, *name, *uuid;
218 int rc, len;
219
220 if (!LUSTRE_CFG_BUFLEN(lcfg, 1)) {
221 CERROR("No type passed!\n");
222 return -EINVAL;
223 }
224 typename = lustre_cfg_string(lcfg, 1);
225
226 if (!LUSTRE_CFG_BUFLEN(lcfg, 0)) {
227 CERROR("No name passed!\n");
228 return -EINVAL;
229 }
230 name = lustre_cfg_string(lcfg, 0);
231
232 if (!LUSTRE_CFG_BUFLEN(lcfg, 2)) {
233 CERROR("No UUID passed!\n");
234 return -EINVAL;
235 }
236 uuid = lustre_cfg_string(lcfg, 2);
237
238 CDEBUG(D_IOCTL, "attach type %s name: %s uuid: %s\n",
239 typename, name, uuid);
240
241 obd = class_newdev(typename, name);
242 if (IS_ERR(obd)) {
243
244 rc = PTR_ERR(obd);
245 obd = NULL;
246 CERROR("Cannot create device %s of type %s : %d\n",
247 name, typename, rc);
248 goto out;
249 }
250 LASSERTF(obd, "Cannot get obd device %s of type %s\n",
251 name, typename);
252 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
253 "obd %p obd_magic %08X != %08X\n",
254 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
255 LASSERTF(strncmp(obd->obd_name, name, strlen(name)) == 0,
256 "%p obd_name %s != %s\n", obd, obd->obd_name, name);
257
258 rwlock_init(&obd->obd_pool_lock);
259 obd->obd_pool_limit = 0;
260 obd->obd_pool_slv = 0;
261
262 INIT_LIST_HEAD(&obd->obd_exports);
263 INIT_LIST_HEAD(&obd->obd_unlinked_exports);
264 INIT_LIST_HEAD(&obd->obd_delayed_exports);
265 spin_lock_init(&obd->obd_nid_lock);
266 spin_lock_init(&obd->obd_dev_lock);
267 mutex_init(&obd->obd_dev_mutex);
268 spin_lock_init(&obd->obd_osfs_lock);
269
270
271
272 obd->obd_osfs_age = cfs_time_shift_64(-1000);
273
274
275 init_rwsem(&obd->obd_observer_link_sem);
276
277 init_waitqueue_head(&obd->obd_evict_inprogress_waitq);
278
279 llog_group_init(&obd->obd_olg);
280
281 obd->obd_conn_inprogress = 0;
282
283 len = strlen(uuid);
284 if (len >= sizeof(obd->obd_uuid)) {
285 CERROR("uuid must be < %d bytes long\n",
286 (int)sizeof(obd->obd_uuid));
287 rc = -EINVAL;
288 goto out;
289 }
290 memcpy(obd->obd_uuid.uuid, uuid, len);
291
292
293 spin_lock(&obd->obd_dev_lock);
294 atomic_set(&obd->obd_refcount, 1);
295 spin_unlock(&obd->obd_dev_lock);
296 lu_ref_init(&obd->obd_reference);
297 lu_ref_add(&obd->obd_reference, "attach", obd);
298
299 obd->obd_attached = 1;
300 CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
301 obd->obd_minor, typename, atomic_read(&obd->obd_refcount));
302 return 0;
303 out:
304 if (obd)
305 class_release_dev(obd);
306
307 return rc;
308}
309
310
311
312
313static int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
314{
315 int err = 0;
316 struct obd_export *exp;
317
318 LASSERT(obd);
319 LASSERTF(obd == class_num2obd(obd->obd_minor),
320 "obd %p != obd_devs[%d] %p\n",
321 obd, obd->obd_minor, class_num2obd(obd->obd_minor));
322 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
323 "obd %p obd_magic %08x != %08x\n",
324 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
325
326
327 if (!obd->obd_attached) {
328 CERROR("Device %d not attached\n", obd->obd_minor);
329 return -ENODEV;
330 }
331
332 if (obd->obd_set_up) {
333 CERROR("Device %d already setup (type %s)\n",
334 obd->obd_minor, obd->obd_type->typ_name);
335 return -EEXIST;
336 }
337
338
339 spin_lock(&obd->obd_dev_lock);
340 if (obd->obd_starting) {
341 spin_unlock(&obd->obd_dev_lock);
342 CERROR("Device %d setup in progress (type %s)\n",
343 obd->obd_minor, obd->obd_type->typ_name);
344 return -EEXIST;
345 }
346
347
348
349 obd->obd_starting = 1;
350 obd->obd_uuid_hash = NULL;
351 spin_unlock(&obd->obd_dev_lock);
352
353
354 obd->obd_uuid_hash = cfs_hash_create("UUID_HASH",
355 HASH_UUID_CUR_BITS,
356 HASH_UUID_MAX_BITS,
357 HASH_UUID_BKT_BITS, 0,
358 CFS_HASH_MIN_THETA,
359 CFS_HASH_MAX_THETA,
360 &uuid_hash_ops, CFS_HASH_DEFAULT);
361 if (!obd->obd_uuid_hash) {
362 err = -ENOMEM;
363 goto err_hash;
364 }
365
366 exp = class_new_export(obd, &obd->obd_uuid);
367 if (IS_ERR(exp)) {
368 err = PTR_ERR(exp);
369 goto err_hash;
370 }
371
372 obd->obd_self_export = exp;
373 class_export_put(exp);
374
375 err = obd_setup(obd, lcfg);
376 if (err)
377 goto err_exp;
378
379 obd->obd_set_up = 1;
380
381 spin_lock(&obd->obd_dev_lock);
382
383 class_incref(obd, "setup", obd);
384 spin_unlock(&obd->obd_dev_lock);
385
386 CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
387 obd->obd_name, obd->obd_uuid.uuid);
388
389 return 0;
390err_exp:
391 if (obd->obd_self_export) {
392 class_unlink_export(obd->obd_self_export);
393 obd->obd_self_export = NULL;
394 }
395err_hash:
396 if (obd->obd_uuid_hash) {
397 cfs_hash_putref(obd->obd_uuid_hash);
398 obd->obd_uuid_hash = NULL;
399 }
400 obd->obd_starting = 0;
401 CERROR("setup %s failed (%d)\n", obd->obd_name, err);
402 return err;
403}
404
405
406
407
408static int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
409{
410 if (obd->obd_set_up) {
411 CERROR("OBD device %d still set up\n", obd->obd_minor);
412 return -EBUSY;
413 }
414
415 spin_lock(&obd->obd_dev_lock);
416 if (!obd->obd_attached) {
417 spin_unlock(&obd->obd_dev_lock);
418 CERROR("OBD device %d not attached\n", obd->obd_minor);
419 return -ENODEV;
420 }
421 obd->obd_attached = 0;
422 spin_unlock(&obd->obd_dev_lock);
423
424 CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n",
425 obd->obd_name, obd->obd_uuid.uuid);
426
427 class_decref(obd, "attach", obd);
428 return 0;
429}
430
431
432
433
434
435static int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
436{
437 int err = 0;
438 char *flag;
439
440 OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
441
442 if (!obd->obd_set_up) {
443 CERROR("Device %d not setup\n", obd->obd_minor);
444 return -ENODEV;
445 }
446
447 spin_lock(&obd->obd_dev_lock);
448 if (obd->obd_stopping) {
449 spin_unlock(&obd->obd_dev_lock);
450 CERROR("OBD %d already stopping\n", obd->obd_minor);
451 return -ENODEV;
452 }
453
454 obd->obd_stopping = 1;
455 spin_unlock(&obd->obd_dev_lock);
456
457 while (obd->obd_conn_inprogress > 0)
458 cond_resched();
459 smp_rmb();
460
461 if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) {
462 for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++)
463 switch (*flag) {
464 case 'F':
465 obd->obd_force = 1;
466 break;
467 case 'A':
468 LCONSOLE_WARN("Failing over %s\n",
469 obd->obd_name);
470 obd->obd_fail = 1;
471 obd->obd_no_transno = 1;
472 obd->obd_no_recov = 1;
473 if (OBP(obd, iocontrol)) {
474 obd_iocontrol(OBD_IOC_SYNC,
475 obd->obd_self_export,
476 0, NULL, NULL);
477 }
478 break;
479 default:
480 CERROR("Unrecognised flag '%c'\n", *flag);
481 }
482 }
483
484 LASSERT(obd->obd_self_export);
485
486
487 err = obd_precleanup(obd);
488 if (err)
489 CERROR("Precleanup %s returned %d\n",
490 obd->obd_name, err);
491
492
493 if (obd->obd_uuid_hash) {
494 cfs_hash_putref(obd->obd_uuid_hash);
495 obd->obd_uuid_hash = NULL;
496 }
497
498 class_decref(obd, "setup", obd);
499 obd->obd_set_up = 0;
500
501 return 0;
502}
503
504struct obd_device *class_incref(struct obd_device *obd,
505 const char *scope, const void *source)
506{
507 lu_ref_add_atomic(&obd->obd_reference, scope, source);
508 atomic_inc(&obd->obd_refcount);
509 CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
510 atomic_read(&obd->obd_refcount));
511
512 return obd;
513}
514EXPORT_SYMBOL(class_incref);
515
516void class_decref(struct obd_device *obd, const char *scope, const void *source)
517{
518 int err;
519 int refs;
520
521 spin_lock(&obd->obd_dev_lock);
522 atomic_dec(&obd->obd_refcount);
523 refs = atomic_read(&obd->obd_refcount);
524 spin_unlock(&obd->obd_dev_lock);
525 lu_ref_del(&obd->obd_reference, scope, source);
526
527 CDEBUG(D_INFO, "Decref %s (%p) now %d\n", obd->obd_name, obd, refs);
528
529 if ((refs == 1) && obd->obd_stopping) {
530
531
532
533
534 spin_lock(&obd->obd_self_export->exp_lock);
535 obd->obd_self_export->exp_flags |= exp_flags_from_obd(obd);
536 spin_unlock(&obd->obd_self_export->exp_lock);
537
538
539 class_unlink_export(obd->obd_self_export);
540 return;
541 }
542
543 if (refs == 0) {
544 CDEBUG(D_CONFIG, "finishing cleanup of obd %s (%s)\n",
545 obd->obd_name, obd->obd_uuid.uuid);
546 LASSERT(!obd->obd_attached);
547 if (obd->obd_stopping) {
548
549 err = obd_cleanup(obd);
550 if (err)
551 CERROR("Cleanup %s returned %d\n",
552 obd->obd_name, err);
553 }
554 class_release_dev(obd);
555 }
556}
557EXPORT_SYMBOL(class_decref);
558
559
560
561
562static int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
563{
564 struct obd_import *imp;
565 struct obd_uuid uuid;
566 int rc;
567
568 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
569 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
570 CERROR("invalid conn_uuid\n");
571 return -EINVAL;
572 }
573 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
574 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
575 strcmp(obd->obd_type->typ_name, LUSTRE_OSP_NAME) &&
576 strcmp(obd->obd_type->typ_name, LUSTRE_LWP_NAME) &&
577 strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
578 CERROR("can't add connection on non-client dev\n");
579 return -EINVAL;
580 }
581
582 imp = obd->u.cli.cl_import;
583 if (!imp) {
584 CERROR("try to add conn on immature client dev\n");
585 return -EINVAL;
586 }
587
588 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
589 rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
590
591 return rc;
592}
593
594
595
596static int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
597{
598 struct obd_import *imp;
599 struct obd_uuid uuid;
600 int rc;
601
602 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
603 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
604 CERROR("invalid conn_uuid\n");
605 return -EINVAL;
606 }
607 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
608 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
609 CERROR("can't del connection on non-client dev\n");
610 return -EINVAL;
611 }
612
613 imp = obd->u.cli.cl_import;
614 if (!imp) {
615 CERROR("try to del conn on immature client dev\n");
616 return -EINVAL;
617 }
618
619 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
620 rc = obd_del_conn(imp, &uuid);
621
622 return rc;
623}
624
625static LIST_HEAD(lustre_profile_list);
626static DEFINE_SPINLOCK(lustre_profile_list_lock);
627
628struct lustre_profile *class_get_profile(const char *prof)
629{
630 struct lustre_profile *lprof;
631
632 spin_lock(&lustre_profile_list_lock);
633 list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
634 if (!strcmp(lprof->lp_profile, prof)) {
635 lprof->lp_refs++;
636 spin_unlock(&lustre_profile_list_lock);
637 return lprof;
638 }
639 }
640 spin_unlock(&lustre_profile_list_lock);
641 return NULL;
642}
643EXPORT_SYMBOL(class_get_profile);
644
645
646
647
648
649static int class_add_profile(int proflen, char *prof, int osclen, char *osc,
650 int mdclen, char *mdc)
651{
652 struct lustre_profile *lprof;
653 int err = 0;
654
655 CDEBUG(D_CONFIG, "Add profile %s\n", prof);
656
657 lprof = kzalloc(sizeof(*lprof), GFP_NOFS);
658 if (!lprof)
659 return -ENOMEM;
660 INIT_LIST_HEAD(&lprof->lp_list);
661
662 LASSERT(proflen == (strlen(prof) + 1));
663 lprof->lp_profile = kmemdup(prof, proflen, GFP_NOFS);
664 if (!lprof->lp_profile) {
665 err = -ENOMEM;
666 goto free_lprof;
667 }
668
669 LASSERT(osclen == (strlen(osc) + 1));
670 lprof->lp_dt = kmemdup(osc, osclen, GFP_NOFS);
671 if (!lprof->lp_dt) {
672 err = -ENOMEM;
673 goto free_lp_profile;
674 }
675
676 if (mdclen > 0) {
677 LASSERT(mdclen == (strlen(mdc) + 1));
678 lprof->lp_md = kmemdup(mdc, mdclen, GFP_NOFS);
679 if (!lprof->lp_md) {
680 err = -ENOMEM;
681 goto free_lp_dt;
682 }
683 }
684
685 spin_lock(&lustre_profile_list_lock);
686 lprof->lp_refs = 1;
687 lprof->lp_list_deleted = false;
688 list_add(&lprof->lp_list, &lustre_profile_list);
689 spin_unlock(&lustre_profile_list_lock);
690 return err;
691
692free_lp_dt:
693 kfree(lprof->lp_dt);
694free_lp_profile:
695 kfree(lprof->lp_profile);
696free_lprof:
697 kfree(lprof);
698 return err;
699}
700
701void class_del_profile(const char *prof)
702{
703 struct lustre_profile *lprof;
704
705 CDEBUG(D_CONFIG, "Del profile %s\n", prof);
706
707 lprof = class_get_profile(prof);
708 if (lprof) {
709 spin_lock(&lustre_profile_list_lock);
710
711 lprof->lp_refs--;
712 list_del(&lprof->lp_list);
713 lprof->lp_list_deleted = true;
714 spin_unlock(&lustre_profile_list_lock);
715
716 class_put_profile(lprof);
717 }
718}
719EXPORT_SYMBOL(class_del_profile);
720
721void class_put_profile(struct lustre_profile *lprof)
722{
723 spin_lock(&lustre_profile_list_lock);
724 if (--lprof->lp_refs > 0) {
725 LASSERT(lprof->lp_refs > 0);
726 spin_unlock(&lustre_profile_list_lock);
727 return;
728 }
729 spin_unlock(&lustre_profile_list_lock);
730
731
732 LASSERT(!lprof->lp_refs);
733
734
735
736
737
738 LASSERT(lprof->lp_list_deleted);
739 kfree(lprof->lp_profile);
740 kfree(lprof->lp_dt);
741 kfree(lprof->lp_md);
742 kfree(lprof);
743}
744EXPORT_SYMBOL(class_put_profile);
745
746
747void class_del_profiles(void)
748{
749 struct lustre_profile *lprof, *n;
750
751 spin_lock(&lustre_profile_list_lock);
752 list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
753 list_del(&lprof->lp_list);
754 lprof->lp_list_deleted = true;
755 spin_unlock(&lustre_profile_list_lock);
756
757 class_put_profile(lprof);
758
759 spin_lock(&lustre_profile_list_lock);
760 }
761 spin_unlock(&lustre_profile_list_lock);
762}
763EXPORT_SYMBOL(class_del_profiles);
764
765static int class_set_global(char *ptr, int val, struct lustre_cfg *lcfg)
766{
767 if (class_match_param(ptr, PARAM_AT_MIN, NULL) == 0)
768 at_min = val;
769 else if (class_match_param(ptr, PARAM_AT_MAX, NULL) == 0)
770 at_max = val;
771 else if (class_match_param(ptr, PARAM_AT_EXTRA, NULL) == 0)
772 at_extra = val;
773 else if (class_match_param(ptr, PARAM_AT_EARLY_MARGIN, NULL) == 0)
774 at_early_margin = val;
775 else if (class_match_param(ptr, PARAM_AT_HISTORY, NULL) == 0)
776 at_history = val;
777 else if (class_match_param(ptr, PARAM_JOBID_VAR, NULL) == 0)
778 strlcpy(obd_jobid_var, lustre_cfg_string(lcfg, 2),
779 JOBSTATS_JOBID_VAR_MAX_LEN + 1);
780 else
781 return -EINVAL;
782
783 CDEBUG(D_IOCTL, "global %s = %d\n", ptr, val);
784 return 0;
785}
786
787
788
789
790static int (*client_process_config)(struct lustre_cfg *lcfg);
791static int (*quota_process_config)(struct lustre_cfg *lcfg);
792
793void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg))
794{
795 client_process_config = cpc;
796}
797EXPORT_SYMBOL(lustre_register_client_process_config);
798
799static int process_param2_config(struct lustre_cfg *lcfg)
800{
801 char *param = lustre_cfg_string(lcfg, 1);
802 char *upcall = lustre_cfg_string(lcfg, 2);
803 char *argv[] = {
804 [0] = "/usr/sbin/lctl",
805 [1] = "set_param",
806 [2] = param,
807 [3] = NULL
808 };
809 ktime_t start;
810 ktime_t end;
811 int rc;
812
813
814 if (strcmp(upcall, LCTL_UPCALL) != 0) {
815 CERROR("Unsupported upcall %s\n", upcall);
816 return -EINVAL;
817 }
818
819 start = ktime_get();
820 rc = call_usermodehelper(argv[0], argv, NULL, UMH_WAIT_PROC);
821 end = ktime_get();
822
823 if (rc < 0) {
824 CERROR(
825 "lctl: error invoking upcall %s %s %s: rc = %d; time %ldus\n",
826 argv[0], argv[1], argv[2], rc,
827 (long)ktime_us_delta(end, start));
828 } else {
829 CDEBUG(D_HA, "lctl: invoked upcall %s %s %s, time %ldus\n",
830 argv[0], argv[1], argv[2],
831 (long)ktime_us_delta(end, start));
832 rc = 0;
833 }
834
835 return rc;
836}
837
838
839
840
841
842int class_process_config(struct lustre_cfg *lcfg)
843{
844 struct obd_device *obd;
845 int err;
846
847 LASSERT(lcfg && !IS_ERR(lcfg));
848 CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
849
850
851 switch (lcfg->lcfg_command) {
852 case LCFG_ATTACH: {
853 err = class_attach(lcfg);
854 goto out;
855 }
856 case LCFG_ADD_UUID: {
857 CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid %#llx (%s)\n",
858 lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid,
859 libcfs_nid2str(lcfg->lcfg_nid));
860
861 err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid);
862 goto out;
863 }
864 case LCFG_DEL_UUID: {
865 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
866 (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0)
867 ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
868
869 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
870 goto out;
871 }
872 case LCFG_MOUNTOPT: {
873 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
874 lustre_cfg_string(lcfg, 1),
875 lustre_cfg_string(lcfg, 2),
876 lustre_cfg_string(lcfg, 3));
877
878
879
880 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
881 lustre_cfg_string(lcfg, 1),
882 LUSTRE_CFG_BUFLEN(lcfg, 2),
883 lustre_cfg_string(lcfg, 2),
884 LUSTRE_CFG_BUFLEN(lcfg, 3),
885 lustre_cfg_string(lcfg, 3));
886 goto out;
887 }
888 case LCFG_DEL_MOUNTOPT: {
889 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
890 lustre_cfg_string(lcfg, 1));
891 class_del_profile(lustre_cfg_string(lcfg, 1));
892 err = 0;
893 goto out;
894 }
895 case LCFG_SET_TIMEOUT: {
896 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
897 obd_timeout, lcfg->lcfg_num);
898 obd_timeout = max(lcfg->lcfg_num, 1U);
899 obd_timeout_set = 1;
900 err = 0;
901 goto out;
902 }
903 case LCFG_SET_LDLM_TIMEOUT: {
904
905 err = 0;
906 goto out;
907 }
908 case LCFG_SET_UPCALL: {
909 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
910
911 err = 0;
912 goto out;
913 }
914 case LCFG_MARKER: {
915 struct cfg_marker *marker;
916
917 marker = lustre_cfg_buf(lcfg, 1);
918 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
919 marker->cm_flags, marker->cm_tgtname, marker->cm_comment);
920 err = 0;
921 goto out;
922 }
923 case LCFG_PARAM: {
924 char *tmp;
925
926 if ((class_match_param(lustre_cfg_string(lcfg, 1),
927 PARAM_LLITE, NULL) == 0) &&
928 client_process_config) {
929 err = (*client_process_config)(lcfg);
930 goto out;
931 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
932 PARAM_SYS, &tmp) == 0)) {
933
934 err = class_set_global(tmp, lcfg->lcfg_num, lcfg);
935
936
937
938
939 if (err != 0)
940 CWARN("Ignoring unknown param %s\n", tmp);
941
942 err = 0;
943 goto out;
944 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
945 PARAM_QUOTA, &tmp) == 0) &&
946 quota_process_config) {
947 err = (*quota_process_config)(lcfg);
948 goto out;
949 }
950
951 break;
952 }
953 case LCFG_SET_PARAM: {
954 err = process_param2_config(lcfg);
955 goto out;
956 }
957 }
958
959 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
960 if (!obd) {
961 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
962 CERROR("this lcfg command requires a device name\n");
963 else
964 CERROR("no device for: %s\n",
965 lustre_cfg_string(lcfg, 0));
966
967 err = -EINVAL;
968 goto out;
969 }
970
971 switch (lcfg->lcfg_command) {
972 case LCFG_SETUP: {
973 err = class_setup(obd, lcfg);
974 goto out;
975 }
976 case LCFG_DETACH: {
977 err = class_detach(obd, lcfg);
978 err = 0;
979 goto out;
980 }
981 case LCFG_CLEANUP: {
982 err = class_cleanup(obd, lcfg);
983 err = 0;
984 goto out;
985 }
986 case LCFG_ADD_CONN: {
987 err = class_add_conn(obd, lcfg);
988 err = 0;
989 goto out;
990 }
991 case LCFG_DEL_CONN: {
992 err = class_del_conn(obd, lcfg);
993 err = 0;
994 goto out;
995 }
996 case LCFG_POOL_NEW: {
997 err = obd_pool_new(obd, lustre_cfg_string(lcfg, 2));
998 err = 0;
999 goto out;
1000 }
1001 case LCFG_POOL_ADD: {
1002 err = obd_pool_add(obd, lustre_cfg_string(lcfg, 2),
1003 lustre_cfg_string(lcfg, 3));
1004 err = 0;
1005 goto out;
1006 }
1007 case LCFG_POOL_REM: {
1008 err = obd_pool_rem(obd, lustre_cfg_string(lcfg, 2),
1009 lustre_cfg_string(lcfg, 3));
1010 err = 0;
1011 goto out;
1012 }
1013 case LCFG_POOL_DEL: {
1014 err = obd_pool_del(obd, lustre_cfg_string(lcfg, 2));
1015 err = 0;
1016 goto out;
1017 }
1018 default: {
1019 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
1020 goto out;
1021 }
1022 }
1023out:
1024 if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
1025 CWARN("Ignoring error %d on optional command %#x\n", err,
1026 lcfg->lcfg_command);
1027 err = 0;
1028 }
1029 return err;
1030}
1031EXPORT_SYMBOL(class_process_config);
1032
1033int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
1034 struct lustre_cfg *lcfg, void *data)
1035{
1036 struct lprocfs_vars *var;
1037 struct file fakefile;
1038 struct seq_file fake_seqfile;
1039 char *key, *sval;
1040 int i, keylen, vallen;
1041 int matched = 0, j = 0;
1042 int rc = 0;
1043 int skip = 0;
1044
1045 if (lcfg->lcfg_command != LCFG_PARAM) {
1046 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1047 return -EINVAL;
1048 }
1049
1050
1051 fakefile.private_data = &fake_seqfile;
1052 fake_seqfile.private = data;
1053
1054
1055
1056
1057 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
1058 key = lustre_cfg_buf(lcfg, i);
1059
1060 if (class_match_param(key, prefix, &key)) {
1061
1062
1063
1064
1065 return -ENOSYS;
1066 }
1067 sval = strchr(key, '=');
1068 if (!sval || (*(sval + 1) == 0)) {
1069 CERROR("Can't parse param %s (missing '=')\n", key);
1070
1071 continue;
1072 }
1073 keylen = sval - key;
1074 sval++;
1075 vallen = strlen(sval);
1076 matched = 0;
1077 j = 0;
1078
1079 while (lvars[j].name) {
1080 var = &lvars[j];
1081 if (!class_match_param(key, var->name, NULL) &&
1082 keylen == strlen(var->name)) {
1083 matched++;
1084 rc = -EROFS;
1085 if (var->fops && var->fops->write) {
1086 mm_segment_t oldfs;
1087
1088 oldfs = get_fs();
1089 set_fs(KERNEL_DS);
1090 rc = var->fops->write(&fakefile,
1091 (const char __user *)sval,
1092 vallen, NULL);
1093 set_fs(oldfs);
1094 }
1095 break;
1096 }
1097 j++;
1098 }
1099 if (!matched) {
1100 CERROR("%.*s: %s unknown param %s\n",
1101 (int)strlen(prefix) - 1, prefix,
1102 (char *)lustre_cfg_string(lcfg, 0), key);
1103
1104 skip++;
1105 } else if (rc < 0) {
1106 CERROR("%s: error writing proc entry '%s': rc = %d\n",
1107 prefix, var->name, rc);
1108 rc = 0;
1109 } else {
1110 CDEBUG(D_CONFIG, "%s.%.*s: Set parameter %.*s=%s\n",
1111 lustre_cfg_string(lcfg, 0),
1112 (int)strlen(prefix) - 1, prefix,
1113 (int)(sval - key - 1), key, sval);
1114 }
1115 }
1116
1117 if (rc > 0)
1118 rc = 0;
1119 if (!rc && skip)
1120 rc = skip;
1121 return rc;
1122}
1123EXPORT_SYMBOL(class_process_proc_param);
1124
1125
1126
1127
1128
1129
1130int class_config_llog_handler(const struct lu_env *env,
1131 struct llog_handle *handle,
1132 struct llog_rec_hdr *rec, void *data)
1133{
1134 struct config_llog_instance *clli = data;
1135 int cfg_len = rec->lrh_len;
1136 char *cfg_buf = (char *)(rec + 1);
1137 int rc = 0;
1138
1139 switch (rec->lrh_type) {
1140 case OBD_CFG_REC: {
1141 struct lustre_cfg *lcfg, *lcfg_new;
1142 struct lustre_cfg_bufs bufs;
1143 char *inst_name = NULL;
1144 int inst_len = 0;
1145 size_t lcfg_len;
1146 int swab = 0;
1147
1148 lcfg = (struct lustre_cfg *)cfg_buf;
1149 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
1150 lustre_swab_lustre_cfg(lcfg);
1151 swab = 1;
1152 }
1153
1154 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1155 if (rc)
1156 goto out;
1157
1158
1159 if (lcfg->lcfg_command == LCFG_MARKER) {
1160 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1161
1162 lustre_swab_cfg_marker(marker, swab,
1163 LUSTRE_CFG_BUFLEN(lcfg, 1));
1164 CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
1165 clli->cfg_flags, marker->cm_flags);
1166 if (marker->cm_flags & CM_START) {
1167
1168 clli->cfg_flags = CFG_F_MARKER;
1169 if (marker->cm_flags & CM_SKIP) {
1170 clli->cfg_flags |= CFG_F_SKIP;
1171 CDEBUG(D_CONFIG, "SKIP #%d\n",
1172 marker->cm_step);
1173 } else if ((marker->cm_flags & CM_EXCLUDE) ||
1174 (clli->cfg_sb &&
1175 lustre_check_exclusion(clli->cfg_sb,
1176 marker->cm_tgtname))) {
1177 clli->cfg_flags |= CFG_F_EXCLUDE;
1178 CDEBUG(D_CONFIG, "EXCLUDE %d\n",
1179 marker->cm_step);
1180 }
1181 } else if (marker->cm_flags & CM_END) {
1182 clli->cfg_flags = 0;
1183 }
1184 }
1185
1186
1187
1188 if (!(clli->cfg_flags & CFG_F_COMPAT146) &&
1189 !(clli->cfg_flags & CFG_F_MARKER) &&
1190 (lcfg->lcfg_command != LCFG_MARKER)) {
1191 CWARN("Config not inside markers, ignoring! (inst: %p, uuid: %s, flags: %#x)\n",
1192 clli->cfg_instance,
1193 clli->cfg_uuid.uuid, clli->cfg_flags);
1194 clli->cfg_flags |= CFG_F_SKIP;
1195 }
1196 if (clli->cfg_flags & CFG_F_SKIP) {
1197 CDEBUG(D_CONFIG, "skipping %#x\n",
1198 clli->cfg_flags);
1199 rc = 0;
1200
1201 break;
1202 }
1203
1204
1205
1206
1207
1208 {
1209 char *typename = lustre_cfg_string(lcfg, 1);
1210 char *index = lustre_cfg_string(lcfg, 2);
1211
1212 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1213 strcmp(typename, "mds") == 0)) {
1214 CWARN("For 1.8 interoperability, rename obd type from mds to mdt\n");
1215 typename[2] = 't';
1216 }
1217 if ((lcfg->lcfg_command == LCFG_SETUP && index &&
1218 strcmp(index, "type") == 0)) {
1219 CDEBUG(D_INFO, "For 1.8 interoperability, set this index to '0'\n");
1220 index[0] = '0';
1221 index[1] = 0;
1222 }
1223 }
1224
1225 if (clli->cfg_flags & CFG_F_EXCLUDE) {
1226 CDEBUG(D_CONFIG, "cmd: %x marked EXCLUDED\n",
1227 lcfg->lcfg_command);
1228 if (lcfg->lcfg_command == LCFG_LOV_ADD_OBD)
1229
1230 lcfg->lcfg_command = LCFG_LOV_ADD_INA;
1231 }
1232
1233 lustre_cfg_bufs_init(&bufs, lcfg);
1234
1235 if (clli && clli->cfg_instance &&
1236 LUSTRE_CFG_BUFLEN(lcfg, 0) > 0) {
1237 inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
1238 sizeof(clli->cfg_instance) * 2 + 4;
1239 inst_name = kasprintf(GFP_NOFS, "%s-%p",
1240 lustre_cfg_string(lcfg, 0),
1241 clli->cfg_instance);
1242 if (!inst_name) {
1243 rc = -ENOMEM;
1244 goto out;
1245 }
1246 lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1247 CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1248 lcfg->lcfg_command, inst_name);
1249 }
1250
1251
1252
1253
1254 if (clli && clli->cfg_instance &&
1255 lcfg->lcfg_command == LCFG_ATTACH) {
1256 lustre_cfg_bufs_set_string(&bufs, 2,
1257 clli->cfg_uuid.uuid);
1258 }
1259
1260
1261
1262
1263
1264
1265
1266 if (clli && !clli->cfg_instance &&
1267 lcfg->lcfg_command == LCFG_SPTLRPC_CONF) {
1268 lustre_cfg_bufs_set(&bufs, 2, bufs.lcfg_buf[1],
1269 bufs.lcfg_buflen[1]);
1270 lustre_cfg_bufs_set(&bufs, 1, bufs.lcfg_buf[0],
1271 bufs.lcfg_buflen[0]);
1272 lustre_cfg_bufs_set_string(&bufs, 0,
1273 clli->cfg_obdname);
1274 }
1275
1276 lcfg_len = lustre_cfg_len(bufs.lcfg_bufcount, bufs.lcfg_buflen);
1277 lcfg_new = kzalloc(lcfg_len, GFP_NOFS);
1278 if (!lcfg_new) {
1279 rc = -ENOMEM;
1280 goto out;
1281 }
1282
1283 lustre_cfg_init(lcfg_new, lcfg->lcfg_command, &bufs);
1284 lcfg_new->lcfg_num = lcfg->lcfg_num;
1285 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1286
1287
1288
1289
1290 if (lcfg->lcfg_nal != 0 &&
1291 (lcfg->lcfg_nid >> 32) == 0) {
1292 __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1293
1294 lcfg_new->lcfg_nid =
1295 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1296 CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1297 lcfg->lcfg_nal, addr,
1298 libcfs_nid2str(lcfg_new->lcfg_nid));
1299 } else {
1300 lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1301 }
1302
1303 lcfg_new->lcfg_nal = 0;
1304
1305 rc = class_process_config(lcfg_new);
1306 kfree(lcfg_new);
1307 kfree(inst_name);
1308 break;
1309 }
1310 default:
1311 CERROR("Unknown llog record type %#x encountered\n",
1312 rec->lrh_type);
1313 break;
1314 }
1315out:
1316 if (rc) {
1317 CERROR("%s: cfg command failed: rc = %d\n",
1318 handle->lgh_ctxt->loc_obd->obd_name, rc);
1319 class_config_dump_handler(NULL, handle, rec, data);
1320 }
1321 return rc;
1322}
1323EXPORT_SYMBOL(class_config_llog_handler);
1324
1325int class_config_parse_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
1326 char *name, struct config_llog_instance *cfg)
1327{
1328 struct llog_process_cat_data cd = {0, 0};
1329 struct llog_handle *llh;
1330 llog_cb_t callback;
1331 int rc;
1332
1333 CDEBUG(D_INFO, "looking up llog %s\n", name);
1334 rc = llog_open(env, ctxt, &llh, NULL, name, LLOG_OPEN_EXISTS);
1335 if (rc)
1336 return rc;
1337
1338 rc = llog_init_handle(env, llh, LLOG_F_IS_PLAIN, NULL);
1339 if (rc)
1340 goto parse_out;
1341
1342
1343 if (cfg) {
1344 cd.lpcd_first_idx = cfg->cfg_last_idx;
1345 callback = cfg->cfg_callback;
1346 LASSERT(callback);
1347 } else {
1348 callback = class_config_llog_handler;
1349 }
1350
1351 cd.lpcd_last_idx = 0;
1352
1353 rc = llog_process(env, llh, callback, cfg, &cd);
1354
1355 CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1356 cd.lpcd_first_idx + 1, cd.lpcd_last_idx, rc);
1357 if (cfg)
1358 cfg->cfg_last_idx = cd.lpcd_last_idx;
1359
1360parse_out:
1361 llog_close(env, llh);
1362 return rc;
1363}
1364EXPORT_SYMBOL(class_config_parse_llog);
1365
1366
1367
1368
1369
1370
1371static int class_config_parse_rec(struct llog_rec_hdr *rec, char *buf,
1372 int size)
1373{
1374 struct lustre_cfg *lcfg = (struct lustre_cfg *)(rec + 1);
1375 char *ptr = buf;
1376 char *end = buf + size;
1377 int rc = 0;
1378
1379 LASSERT(rec->lrh_type == OBD_CFG_REC);
1380 rc = lustre_cfg_sanity_check(lcfg, rec->lrh_len);
1381 if (rc < 0)
1382 return rc;
1383
1384 ptr += snprintf(ptr, end - ptr, "cmd=%05x ", lcfg->lcfg_command);
1385 if (lcfg->lcfg_flags)
1386 ptr += snprintf(ptr, end - ptr, "flags=%#08x ",
1387 lcfg->lcfg_flags);
1388
1389 if (lcfg->lcfg_num)
1390 ptr += snprintf(ptr, end - ptr, "num=%#08x ", lcfg->lcfg_num);
1391
1392 if (lcfg->lcfg_nid) {
1393 char nidstr[LNET_NIDSTR_SIZE];
1394
1395 libcfs_nid2str_r(lcfg->lcfg_nid, nidstr, sizeof(nidstr));
1396 ptr += snprintf(ptr, end - ptr, "nid=%s(%#llx)\n ",
1397 nidstr, lcfg->lcfg_nid);
1398 }
1399
1400 if (lcfg->lcfg_command == LCFG_MARKER) {
1401 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1402
1403 ptr += snprintf(ptr, end - ptr, "marker=%d(%#x)%s '%s'",
1404 marker->cm_step, marker->cm_flags,
1405 marker->cm_tgtname, marker->cm_comment);
1406 } else {
1407 int i;
1408
1409 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
1410 ptr += snprintf(ptr, end - ptr, "%d:%s ", i,
1411 lustre_cfg_string(lcfg, i));
1412 }
1413 }
1414 ptr += snprintf(ptr, end - ptr, "\n");
1415
1416 rc = ptr - buf;
1417 return rc;
1418}
1419
1420int class_config_dump_handler(const struct lu_env *env,
1421 struct llog_handle *handle,
1422 struct llog_rec_hdr *rec, void *data)
1423{
1424 char *outstr;
1425 int rc = 0;
1426
1427 outstr = kzalloc(256, GFP_NOFS);
1428 if (!outstr)
1429 return -ENOMEM;
1430
1431 if (rec->lrh_type == OBD_CFG_REC) {
1432 class_config_parse_rec(rec, outstr, 256);
1433 LCONSOLE(D_WARNING, " %s", outstr);
1434 } else {
1435 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
1436 rc = -EINVAL;
1437 }
1438
1439 kfree(outstr);
1440 return rc;
1441}
1442
1443
1444
1445
1446int class_manual_cleanup(struct obd_device *obd)
1447{
1448 char flags[3] = "";
1449 struct lustre_cfg *lcfg;
1450 struct lustre_cfg_bufs bufs;
1451 int rc;
1452
1453 if (!obd) {
1454 CERROR("empty cleanup\n");
1455 return -EALREADY;
1456 }
1457
1458 if (obd->obd_force)
1459 strcat(flags, "F");
1460 if (obd->obd_fail)
1461 strcat(flags, "A");
1462
1463 CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
1464 obd->obd_name, flags);
1465
1466 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
1467 lustre_cfg_bufs_set_string(&bufs, 1, flags);
1468 lcfg = kzalloc(lustre_cfg_len(bufs.lcfg_bufcount, bufs.lcfg_buflen),
1469 GFP_NOFS);
1470 if (!lcfg)
1471 return -ENOMEM;
1472 lustre_cfg_init(lcfg, LCFG_CLEANUP, &bufs);
1473
1474 rc = class_process_config(lcfg);
1475 if (rc) {
1476 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
1477 goto out;
1478 }
1479
1480
1481 lcfg->lcfg_command = LCFG_DETACH;
1482 rc = class_process_config(lcfg);
1483 if (rc)
1484 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
1485out:
1486 kfree(lcfg);
1487 return rc;
1488}
1489EXPORT_SYMBOL(class_manual_cleanup);
1490
1491
1492
1493
1494
1495static unsigned int
1496uuid_hash(struct cfs_hash *hs, const void *key, unsigned int mask)
1497{
1498 return cfs_hash_djb2_hash(((struct obd_uuid *)key)->uuid,
1499 sizeof(((struct obd_uuid *)key)->uuid), mask);
1500}
1501
1502static void *
1503uuid_key(struct hlist_node *hnode)
1504{
1505 struct obd_export *exp;
1506
1507 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1508
1509 return &exp->exp_client_uuid;
1510}
1511
1512
1513
1514
1515
1516static int
1517uuid_keycmp(const void *key, struct hlist_node *hnode)
1518{
1519 struct obd_export *exp;
1520
1521 LASSERT(key);
1522 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1523
1524 return obd_uuid_equals(key, &exp->exp_client_uuid) &&
1525 !exp->exp_failed;
1526}
1527
1528static void *
1529uuid_export_object(struct hlist_node *hnode)
1530{
1531 return hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1532}
1533
1534static void
1535uuid_export_get(struct cfs_hash *hs, struct hlist_node *hnode)
1536{
1537 struct obd_export *exp;
1538
1539 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1540 class_export_get(exp);
1541}
1542
1543static void
1544uuid_export_put_locked(struct cfs_hash *hs, struct hlist_node *hnode)
1545{
1546 struct obd_export *exp;
1547
1548 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1549 class_export_put(exp);
1550}
1551
1552static struct cfs_hash_ops uuid_hash_ops = {
1553 .hs_hash = uuid_hash,
1554 .hs_key = uuid_key,
1555 .hs_keycmp = uuid_keycmp,
1556 .hs_object = uuid_export_object,
1557 .hs_get = uuid_export_get,
1558 .hs_put_locked = uuid_export_put_locked,
1559};
1560