This source file includes following definitions.
- stonith_text2namespace
- stonith_namespace2text
- stonith_get_namespace
- stonith__watchdog_fencing_enabled_for_node_api
- stonith__watchdog_fencing_enabled_for_node
- foreach_notify_entry
- stonith_connection_destroy
- create_device_registration_xml
- stonith_api_register_device
- stonith_api_remove_device
- stonith_api_remove_level_full
- stonith_api_remove_level
- create_level_registration_xml
- stonith_api_register_level_full
- stonith_api_register_level
- stonith_api_device_list
- stonith_api_device_metadata
- stonith_api_query
- stonith_api_call
- stonith_api_list
- stonith_api_monitor
- stonith_api_status
- stonith_api_fence_with_delay
- stonith_api_fence
- stonith_api_confirm
- stonith_api_history
- stonith_history_free
- stonithlib_GCompareFunc
- stonith_create_op
- stonith_destroy_op_callback
- stonith_api_signoff
- stonith_api_del_callback
- invoke_fence_action_callback
- invoke_registered_callbacks
- stonith_async_timeout_handler
- set_callback_timeout
- update_callback_timeout
- stonith_dispatch_internal
- stonith_api_signon
- stonith_set_notification
- stonith_api_add_notification
- del_notify_entry
- stonith_api_del_notification
- stonith_api_add_callback
- stonith_dump_pending_op
- stonith_dump_pending_callbacks
- get_event_data_xml
- xml_to_event
- event_free
- stonith_send_notification
- stonith_send_command
- stonith_dispatch
- stonith_api_free
- stonith_api_delete
- stonith_api_validate
- stonith_api_new
- stonith_api_connect_retry
- stonith_key_value_add
- stonith_key_value_freeall
- stonith_api_kick
- stonith_api_time
- stonith_agent_exists
- stonith_action_str
- parse_list_line
- stonith__parse_targets
- stonith__later_succeeded
- stonith__sort_history
- stonith_op_state_str
- stonith__first_matching_event
- stonith__event_state_pending
- stonith__event_state_eq
- stonith__event_state_neq
- stonith__device_parameter_flags
- stonith__metadata_async
- stonith__exit_status
- stonith__execution_status
- stonith__exit_reason
- stonith__event_exit_status
- stonith__event_execution_status
- stonith__event_exit_reason
- stonith__event_description
- get_stonith_provider
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10 #include <crm_internal.h>
11
12 #include <stdlib.h>
13 #include <stdio.h>
14 #include <stdbool.h>
15 #include <string.h>
16 #include <ctype.h>
17 #include <inttypes.h>
18 #include <sys/types.h>
19 #include <glib.h>
20
21 #include <crm/crm.h>
22 #include <crm/stonith-ng.h>
23 #include <crm/fencing/internal.h>
24 #include <crm/msg_xml.h>
25
26 #include <crm/common/mainloop.h>
27
28 #include "fencing_private.h"
29
30 CRM_TRACE_INIT_DATA(stonith);
31
32
33 typedef struct stonith_private_s {
34 char *token;
35 crm_ipc_t *ipc;
36 mainloop_io_t *source;
37 GHashTable *stonith_op_callback_table;
38 GList *notify_list;
39 int notify_refcnt;
40 bool notify_deletes;
41
42 void (*op_callback) (stonith_t * st, stonith_callback_data_t * data);
43
44 } stonith_private_t;
45
46
47 struct event_private {
48 pcmk__action_result_t result;
49 };
50
51 typedef struct stonith_notify_client_s {
52 const char *event;
53 const char *obj_id;
54 const char *obj_type;
55 void (*notify) (stonith_t * st, stonith_event_t * e);
56 bool delete;
57
58 } stonith_notify_client_t;
59
60 typedef struct stonith_callback_client_s {
61 void (*callback) (stonith_t * st, stonith_callback_data_t * data);
62 const char *id;
63 void *user_data;
64 gboolean only_success;
65 gboolean allow_timeout_updates;
66 struct timer_rec_s *timer;
67
68 } stonith_callback_client_t;
69
70 struct notify_blob_s {
71 stonith_t *stonith;
72 xmlNode *xml;
73 };
74
75 struct timer_rec_s {
76 int call_id;
77 int timeout;
78 guint ref;
79 stonith_t *stonith;
80 };
81
82 typedef int (*stonith_op_t) (const char *, int, const char *, xmlNode *,
83 xmlNode *, xmlNode *, xmlNode **, xmlNode **);
84
85 bool stonith_dispatch(stonith_t * st);
86 xmlNode *stonith_create_op(int call_id, const char *token, const char *op, xmlNode * data,
87 int call_options);
88 static int stonith_send_command(stonith_t *stonith, const char *op,
89 xmlNode *data, xmlNode **output_data,
90 int call_options, int timeout);
91
92 static void stonith_connection_destroy(gpointer user_data);
93 static void stonith_send_notification(gpointer data, gpointer user_data);
94 static int stonith_api_del_notification(stonith_t *stonith,
95 const char *event);
96
97
98
99
100
101
102
103 enum stonith_namespace
104 stonith_text2namespace(const char *namespace_s)
105 {
106 if (pcmk__str_eq(namespace_s, "any", pcmk__str_null_matches)) {
107 return st_namespace_any;
108
109 } else if (!strcmp(namespace_s, "redhat")
110 || !strcmp(namespace_s, "stonith-ng")) {
111 return st_namespace_rhcs;
112
113 } else if (!strcmp(namespace_s, "internal")) {
114 return st_namespace_internal;
115
116 } else if (!strcmp(namespace_s, "heartbeat")) {
117 return st_namespace_lha;
118 }
119 return st_namespace_invalid;
120 }
121
122
123
124
125
126
127
128
129 const char *
130 stonith_namespace2text(enum stonith_namespace st_namespace)
131 {
132 switch (st_namespace) {
133 case st_namespace_any: return "any";
134 case st_namespace_rhcs: return "stonith-ng";
135 case st_namespace_internal: return "internal";
136 case st_namespace_lha: return "heartbeat";
137 default: break;
138 }
139 return "unsupported";
140 }
141
142
143
144
145
146
147
148
149
150 enum stonith_namespace
151 stonith_get_namespace(const char *agent, const char *namespace_s)
152 {
153 if (pcmk__str_eq(namespace_s, "internal", pcmk__str_none)) {
154 return st_namespace_internal;
155 }
156
157 if (stonith__agent_is_rhcs(agent)) {
158 return st_namespace_rhcs;
159 }
160
161 #if HAVE_STONITH_STONITH_H
162 if (stonith__agent_is_lha(agent)) {
163 return st_namespace_lha;
164 }
165 #endif
166
167 crm_err("Unknown fence agent: %s", agent);
168 return st_namespace_invalid;
169 }
170
171 gboolean
172 stonith__watchdog_fencing_enabled_for_node_api(stonith_t *st, const char *node)
173 {
174 gboolean rv = FALSE;
175 stonith_t *stonith_api = st?st:stonith_api_new();
176 char *list = NULL;
177
178 if(stonith_api) {
179 if (stonith_api->state == stonith_disconnected) {
180 int rc = stonith_api->cmds->connect(stonith_api, "stonith-api", NULL);
181
182 if (rc != pcmk_ok) {
183 crm_err("Failed connecting to Stonith-API for watchdog-fencing-query.");
184 }
185 }
186
187 if (stonith_api->state != stonith_disconnected) {
188
189
190
191 int rc = stonith_api->cmds->list(stonith_api, st_opt_sync_call, STONITH_WATCHDOG_ID, &list, 0);
192 if ((rc != pcmk_ok) || (list == NULL)) {
193
194
195
196
197 if (rc == -ENODEV) {
198 crm_notice("Cluster does not have watchdog fencing device");
199 } else {
200 crm_warn("Could not check for watchdog fencing device: %s",
201 pcmk_strerror(rc));
202 }
203 } else if (list[0] == '\0') {
204 rv = TRUE;
205 } else {
206 GList *targets = stonith__parse_targets(list);
207 rv = pcmk__str_in_list(node, targets, pcmk__str_casei);
208 g_list_free_full(targets, free);
209 }
210 free(list);
211 if (!st) {
212
213
214
215 stonith_api->cmds->disconnect(stonith_api);
216 }
217 }
218
219 if (!st) {
220 stonith_api_delete(stonith_api);
221 }
222 } else {
223 crm_err("Stonith-API for watchdog-fencing-query couldn't be created.");
224 }
225 crm_trace("Pacemaker assumes node %s %sto do watchdog-fencing.",
226 node, rv?"":"not ");
227 return rv;
228 }
229
230 gboolean
231 stonith__watchdog_fencing_enabled_for_node(const char *node)
232 {
233 return stonith__watchdog_fencing_enabled_for_node_api(NULL, node);
234 }
235
236
237
238
239
240 static void
241 foreach_notify_entry (stonith_private_t *private,
242 GFunc func,
243 gpointer user_data)
244 {
245 private->notify_refcnt++;
246 g_list_foreach(private->notify_list, func, user_data);
247 private->notify_refcnt--;
248 if ((private->notify_refcnt == 0) &&
249 private->notify_deletes) {
250 GList *list_item = private->notify_list;
251
252 private->notify_deletes = FALSE;
253 while (list_item != NULL)
254 {
255 stonith_notify_client_t *list_client = list_item->data;
256 GList *next = g_list_next(list_item);
257
258 if (list_client->delete) {
259 free(list_client);
260 private->notify_list =
261 g_list_delete_link(private->notify_list, list_item);
262 }
263 list_item = next;
264 }
265 }
266 }
267
268 static void
269 stonith_connection_destroy(gpointer user_data)
270 {
271 stonith_t *stonith = user_data;
272 stonith_private_t *native = NULL;
273 struct notify_blob_s blob;
274
275 crm_trace("Sending destroyed notification");
276 blob.stonith = stonith;
277 blob.xml = create_xml_node(NULL, "notify");
278
279 native = stonith->st_private;
280 native->ipc = NULL;
281 native->source = NULL;
282
283 free(native->token); native->token = NULL;
284 stonith->state = stonith_disconnected;
285 crm_xml_add(blob.xml, F_TYPE, T_STONITH_NOTIFY);
286 crm_xml_add(blob.xml, F_SUBTYPE, T_STONITH_NOTIFY_DISCONNECT);
287
288 foreach_notify_entry(native, stonith_send_notification, &blob);
289 free_xml(blob.xml);
290 }
291
292 xmlNode *
293 create_device_registration_xml(const char *id, enum stonith_namespace namespace,
294 const char *agent,
295 const stonith_key_value_t *params,
296 const char *rsc_provides)
297 {
298 xmlNode *data = create_xml_node(NULL, F_STONITH_DEVICE);
299 xmlNode *args = create_xml_node(data, XML_TAG_ATTRS);
300
301 #if HAVE_STONITH_STONITH_H
302 if (namespace == st_namespace_any) {
303 namespace = stonith_get_namespace(agent, NULL);
304 }
305 if (namespace == st_namespace_lha) {
306 hash2field((gpointer) "plugin", (gpointer) agent, args);
307 agent = "fence_legacy";
308 }
309 #endif
310
311 crm_xml_add(data, XML_ATTR_ID, id);
312 crm_xml_add(data, F_STONITH_ORIGIN, __func__);
313 crm_xml_add(data, "agent", agent);
314 if ((namespace != st_namespace_any) && (namespace != st_namespace_invalid)) {
315 crm_xml_add(data, "namespace", stonith_namespace2text(namespace));
316 }
317 if (rsc_provides) {
318 crm_xml_add(data, "rsc_provides", rsc_provides);
319 }
320
321 for (; params; params = params->next) {
322 hash2field((gpointer) params->key, (gpointer) params->value, args);
323 }
324
325 return data;
326 }
327
328 static int
329 stonith_api_register_device(stonith_t *st, int call_options,
330 const char *id, const char *namespace,
331 const char *agent,
332 const stonith_key_value_t *params)
333 {
334 int rc = 0;
335 xmlNode *data = NULL;
336
337 data = create_device_registration_xml(id, stonith_text2namespace(namespace),
338 agent, params, NULL);
339
340 rc = stonith_send_command(st, STONITH_OP_DEVICE_ADD, data, NULL, call_options, 0);
341 free_xml(data);
342
343 return rc;
344 }
345
346 static int
347 stonith_api_remove_device(stonith_t * st, int call_options, const char *name)
348 {
349 int rc = 0;
350 xmlNode *data = NULL;
351
352 data = create_xml_node(NULL, F_STONITH_DEVICE);
353 crm_xml_add(data, F_STONITH_ORIGIN, __func__);
354 crm_xml_add(data, XML_ATTR_ID, name);
355 rc = stonith_send_command(st, STONITH_OP_DEVICE_DEL, data, NULL, call_options, 0);
356 free_xml(data);
357
358 return rc;
359 }
360
361 static int
362 stonith_api_remove_level_full(stonith_t *st, int options,
363 const char *node, const char *pattern,
364 const char *attr, const char *value, int level)
365 {
366 int rc = 0;
367 xmlNode *data = NULL;
368
369 CRM_CHECK(node || pattern || (attr && value), return -EINVAL);
370
371 data = create_xml_node(NULL, XML_TAG_FENCING_LEVEL);
372 crm_xml_add(data, F_STONITH_ORIGIN, __func__);
373
374 if (node) {
375 crm_xml_add(data, XML_ATTR_STONITH_TARGET, node);
376
377 } else if (pattern) {
378 crm_xml_add(data, XML_ATTR_STONITH_TARGET_PATTERN, pattern);
379
380 } else {
381 crm_xml_add(data, XML_ATTR_STONITH_TARGET_ATTRIBUTE, attr);
382 crm_xml_add(data, XML_ATTR_STONITH_TARGET_VALUE, value);
383 }
384
385 crm_xml_add_int(data, XML_ATTR_STONITH_INDEX, level);
386 rc = stonith_send_command(st, STONITH_OP_LEVEL_DEL, data, NULL, options, 0);
387 free_xml(data);
388
389 return rc;
390 }
391
392 static int
393 stonith_api_remove_level(stonith_t * st, int options, const char *node, int level)
394 {
395 return stonith_api_remove_level_full(st, options, node,
396 NULL, NULL, NULL, level);
397 }
398
399
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411
412
413
414 xmlNode *
415 create_level_registration_xml(const char *node, const char *pattern,
416 const char *attr, const char *value,
417 int level, const stonith_key_value_t *device_list)
418 {
419 GString *list = NULL;
420 xmlNode *data;
421
422 CRM_CHECK(node || pattern || (attr && value), return NULL);
423
424 data = create_xml_node(NULL, XML_TAG_FENCING_LEVEL);
425 CRM_CHECK(data, return NULL);
426
427 crm_xml_add(data, F_STONITH_ORIGIN, __func__);
428 crm_xml_add_int(data, XML_ATTR_ID, level);
429 crm_xml_add_int(data, XML_ATTR_STONITH_INDEX, level);
430
431 if (node) {
432 crm_xml_add(data, XML_ATTR_STONITH_TARGET, node);
433
434 } else if (pattern) {
435 crm_xml_add(data, XML_ATTR_STONITH_TARGET_PATTERN, pattern);
436
437 } else {
438 crm_xml_add(data, XML_ATTR_STONITH_TARGET_ATTRIBUTE, attr);
439 crm_xml_add(data, XML_ATTR_STONITH_TARGET_VALUE, value);
440 }
441
442 for (; device_list; device_list = device_list->next) {
443 pcmk__add_separated_word(&list, 1024, device_list->value, ",");
444 }
445
446 if (list != NULL) {
447 crm_xml_add(data, XML_ATTR_STONITH_DEVICES, (const char *) list->str);
448 g_string_free(list, TRUE);
449 }
450 return data;
451 }
452
453 static int
454 stonith_api_register_level_full(stonith_t *st, int options, const char *node,
455 const char *pattern, const char *attr,
456 const char *value, int level,
457 const stonith_key_value_t *device_list)
458 {
459 int rc = 0;
460 xmlNode *data = create_level_registration_xml(node, pattern, attr, value,
461 level, device_list);
462 CRM_CHECK(data != NULL, return -EINVAL);
463
464 rc = stonith_send_command(st, STONITH_OP_LEVEL_ADD, data, NULL, options, 0);
465 free_xml(data);
466
467 return rc;
468 }
469
470 static int
471 stonith_api_register_level(stonith_t * st, int options, const char *node, int level,
472 const stonith_key_value_t * device_list)
473 {
474 return stonith_api_register_level_full(st, options, node, NULL, NULL, NULL,
475 level, device_list);
476 }
477
478 static int
479 stonith_api_device_list(stonith_t * stonith, int call_options, const char *namespace,
480 stonith_key_value_t ** devices, int timeout)
481 {
482 int count = 0;
483 enum stonith_namespace ns = stonith_text2namespace(namespace);
484
485 if (devices == NULL) {
486 crm_err("Parameter error: stonith_api_device_list");
487 return -EFAULT;
488 }
489
490 #if HAVE_STONITH_STONITH_H
491
492 if ((ns == st_namespace_any) || (ns == st_namespace_lha)) {
493 count += stonith__list_lha_agents(devices);
494 }
495 #endif
496
497
498 if ((ns == st_namespace_any) || (ns == st_namespace_rhcs)) {
499 count += stonith__list_rhcs_agents(devices);
500 }
501
502 return count;
503 }
504
505
506 static int
507 stonith_api_device_metadata(stonith_t *stonith, int call_options,
508 const char *agent, const char *namespace,
509 char **output, int timeout_sec)
510 {
511
512
513
514
515 enum stonith_namespace ns = stonith_get_namespace(agent, namespace);
516
517 if (timeout_sec <= 0) {
518 timeout_sec = CRMD_METADATA_CALL_TIMEOUT;
519 }
520
521 crm_trace("Looking up metadata for %s agent %s",
522 stonith_namespace2text(ns), agent);
523
524 switch (ns) {
525 case st_namespace_rhcs:
526 return stonith__rhcs_metadata(agent, timeout_sec, output);
527
528 #if HAVE_STONITH_STONITH_H
529 case st_namespace_lha:
530 return stonith__lha_metadata(agent, timeout_sec, output);
531 #endif
532
533 default:
534 crm_err("Can't get fence agent '%s' meta-data: No such agent",
535 agent);
536 break;
537 }
538 return -ENODEV;
539 }
540
541 static int
542 stonith_api_query(stonith_t * stonith, int call_options, const char *target,
543 stonith_key_value_t ** devices, int timeout)
544 {
545 int rc = 0, lpc = 0, max = 0;
546
547 xmlNode *data = NULL;
548 xmlNode *output = NULL;
549 xmlXPathObjectPtr xpathObj = NULL;
550
551 CRM_CHECK(devices != NULL, return -EINVAL);
552
553 data = create_xml_node(NULL, F_STONITH_DEVICE);
554 crm_xml_add(data, F_STONITH_ORIGIN, __func__);
555 crm_xml_add(data, F_STONITH_TARGET, target);
556 crm_xml_add(data, F_STONITH_ACTION, "off");
557 rc = stonith_send_command(stonith, STONITH_OP_QUERY, data, &output, call_options, timeout);
558
559 if (rc < 0) {
560 return rc;
561 }
562
563 xpathObj = xpath_search(output, "//@agent");
564 if (xpathObj) {
565 max = numXpathResults(xpathObj);
566
567 for (lpc = 0; lpc < max; lpc++) {
568 xmlNode *match = getXpathResult(xpathObj, lpc);
569
570 CRM_LOG_ASSERT(match != NULL);
571 if(match != NULL) {
572 xmlChar *match_path = xmlGetNodePath(match);
573
574 crm_info("%s[%d] = %s", "//@agent", lpc, match_path);
575 free(match_path);
576 *devices = stonith_key_value_add(*devices, NULL, crm_element_value(match, XML_ATTR_ID));
577 }
578 }
579
580 freeXpathObject(xpathObj);
581 }
582
583 free_xml(output);
584 free_xml(data);
585 return max;
586 }
587
588
589
590
591
592
593
594
595
596
597
598
599
600 static int
601 stonith_api_call(stonith_t *stonith, int call_options, const char *id,
602 const char *action, const char *target, int timeout_sec,
603 xmlNode **output)
604 {
605 int rc = 0;
606 xmlNode *data = NULL;
607
608 data = create_xml_node(NULL, F_STONITH_DEVICE);
609 crm_xml_add(data, F_STONITH_ORIGIN, __func__);
610 crm_xml_add(data, F_STONITH_DEVICE, id);
611 crm_xml_add(data, F_STONITH_ACTION, action);
612 crm_xml_add(data, F_STONITH_TARGET, target);
613
614 rc = stonith_send_command(stonith, STONITH_OP_EXEC, data, output,
615 call_options, timeout_sec);
616 free_xml(data);
617
618 return rc;
619 }
620
621 static int
622 stonith_api_list(stonith_t * stonith, int call_options, const char *id, char **list_info,
623 int timeout)
624 {
625 int rc;
626 xmlNode *output = NULL;
627
628 rc = stonith_api_call(stonith, call_options, id, "list", NULL, timeout, &output);
629
630 if (output && list_info) {
631 const char *list_str;
632
633 list_str = crm_element_value(output, F_STONITH_OUTPUT);
634
635 if (list_str) {
636 *list_info = strdup(list_str);
637 }
638 }
639
640 if (output) {
641 free_xml(output);
642 }
643
644 return rc;
645 }
646
647 static int
648 stonith_api_monitor(stonith_t * stonith, int call_options, const char *id, int timeout)
649 {
650 return stonith_api_call(stonith, call_options, id, "monitor", NULL, timeout, NULL);
651 }
652
653 static int
654 stonith_api_status(stonith_t * stonith, int call_options, const char *id, const char *port,
655 int timeout)
656 {
657 return stonith_api_call(stonith, call_options, id, "status", port, timeout, NULL);
658 }
659
660 static int
661 stonith_api_fence_with_delay(stonith_t * stonith, int call_options, const char *node,
662 const char *action, int timeout, int tolerance, int delay)
663 {
664 int rc = 0;
665 xmlNode *data = NULL;
666
667 data = create_xml_node(NULL, __func__);
668 crm_xml_add(data, F_STONITH_TARGET, node);
669 crm_xml_add(data, F_STONITH_ACTION, action);
670 crm_xml_add_int(data, F_STONITH_TIMEOUT, timeout);
671 crm_xml_add_int(data, F_STONITH_TOLERANCE, tolerance);
672 crm_xml_add_int(data, F_STONITH_DELAY, delay);
673
674 rc = stonith_send_command(stonith, STONITH_OP_FENCE, data, NULL, call_options, timeout);
675 free_xml(data);
676
677 return rc;
678 }
679
680 static int
681 stonith_api_fence(stonith_t * stonith, int call_options, const char *node, const char *action,
682 int timeout, int tolerance)
683 {
684 return stonith_api_fence_with_delay(stonith, call_options, node, action,
685 timeout, tolerance, 0);
686 }
687
688 static int
689 stonith_api_confirm(stonith_t * stonith, int call_options, const char *target)
690 {
691 stonith__set_call_options(call_options, target, st_opt_manual_ack);
692 return stonith_api_fence(stonith, call_options, target, "off", 0, 0);
693 }
694
695 static int
696 stonith_api_history(stonith_t * stonith, int call_options, const char *node,
697 stonith_history_t ** history, int timeout)
698 {
699 int rc = 0;
700 xmlNode *data = NULL;
701 xmlNode *output = NULL;
702 stonith_history_t *last = NULL;
703
704 *history = NULL;
705
706 if (node) {
707 data = create_xml_node(NULL, __func__);
708 crm_xml_add(data, F_STONITH_TARGET, node);
709 }
710
711 stonith__set_call_options(call_options, node, st_opt_sync_call);
712 rc = stonith_send_command(stonith, STONITH_OP_FENCE_HISTORY, data, &output,
713 call_options, timeout);
714 free_xml(data);
715
716 if (rc == 0) {
717 xmlNode *op = NULL;
718 xmlNode *reply = get_xpath_object("//" F_STONITH_HISTORY_LIST, output,
719 LOG_NEVER);
720
721 for (op = pcmk__xml_first_child(reply); op != NULL;
722 op = pcmk__xml_next(op)) {
723 stonith_history_t *kvp;
724 long long completed;
725 long long completed_nsec = 0L;
726
727 kvp = calloc(1, sizeof(stonith_history_t));
728 kvp->target = crm_element_value_copy(op, F_STONITH_TARGET);
729 kvp->action = crm_element_value_copy(op, F_STONITH_ACTION);
730 kvp->origin = crm_element_value_copy(op, F_STONITH_ORIGIN);
731 kvp->delegate = crm_element_value_copy(op, F_STONITH_DELEGATE);
732 kvp->client = crm_element_value_copy(op, F_STONITH_CLIENTNAME);
733 crm_element_value_ll(op, F_STONITH_DATE, &completed);
734 kvp->completed = (time_t) completed;
735 crm_element_value_ll(op, F_STONITH_DATE_NSEC, &completed_nsec);
736 kvp->completed_nsec = completed_nsec;
737 crm_element_value_int(op, F_STONITH_STATE, &kvp->state);
738 kvp->exit_reason = crm_element_value_copy(op,
739 XML_LRM_ATTR_EXIT_REASON);
740
741 if (last) {
742 last->next = kvp;
743 } else {
744 *history = kvp;
745 }
746 last = kvp;
747 }
748 }
749
750 free_xml(output);
751
752 return rc;
753 }
754
755 void stonith_history_free(stonith_history_t *history)
756 {
757 stonith_history_t *hp, *hp_old;
758
759 for (hp = history; hp; hp_old = hp, hp = hp->next, free(hp_old)) {
760 free(hp->target);
761 free(hp->action);
762 free(hp->origin);
763 free(hp->delegate);
764 free(hp->client);
765 free(hp->exit_reason);
766 }
767 }
768
769 static gint
770 stonithlib_GCompareFunc(gconstpointer a, gconstpointer b)
771 {
772 int rc = 0;
773 const stonith_notify_client_t *a_client = a;
774 const stonith_notify_client_t *b_client = b;
775
776 if (a_client->delete || b_client->delete) {
777
778 return -1;
779 }
780 CRM_CHECK(a_client->event != NULL && b_client->event != NULL, return 0);
781 rc = strcmp(a_client->event, b_client->event);
782 if (rc == 0) {
783 if (a_client->notify == NULL || b_client->notify == NULL) {
784 return 0;
785
786 } else if (a_client->notify == b_client->notify) {
787 return 0;
788
789 } else if (((long)a_client->notify) < ((long)b_client->notify)) {
790 crm_err("callbacks for %s are not equal: %p vs. %p",
791 a_client->event, a_client->notify, b_client->notify);
792 return -1;
793 }
794 crm_err("callbacks for %s are not equal: %p vs. %p",
795 a_client->event, a_client->notify, b_client->notify);
796 return 1;
797 }
798 return rc;
799 }
800
801 xmlNode *
802 stonith_create_op(int call_id, const char *token, const char *op, xmlNode * data, int call_options)
803 {
804 xmlNode *op_msg = create_xml_node(NULL, "stonith_command");
805
806 CRM_CHECK(op_msg != NULL, return NULL);
807 CRM_CHECK(token != NULL, return NULL);
808
809 crm_xml_add(op_msg, F_XML_TAGNAME, "stonith_command");
810
811 crm_xml_add(op_msg, F_TYPE, T_STONITH_NG);
812 crm_xml_add(op_msg, F_STONITH_CALLBACK_TOKEN, token);
813 crm_xml_add(op_msg, F_STONITH_OPERATION, op);
814 crm_xml_add_int(op_msg, F_STONITH_CALLID, call_id);
815 crm_trace("Sending call options: %.8lx, %d", (long)call_options, call_options);
816 crm_xml_add_int(op_msg, F_STONITH_CALLOPTS, call_options);
817
818 if (data != NULL) {
819 add_message_xml(op_msg, F_STONITH_CALLDATA, data);
820 }
821
822 return op_msg;
823 }
824
825 static void
826 stonith_destroy_op_callback(gpointer data)
827 {
828 stonith_callback_client_t *blob = data;
829
830 if (blob->timer && blob->timer->ref > 0) {
831 g_source_remove(blob->timer->ref);
832 }
833 free(blob->timer);
834 free(blob);
835 }
836
837 static int
838 stonith_api_signoff(stonith_t * stonith)
839 {
840 stonith_private_t *native = stonith->st_private;
841
842 crm_debug("Disconnecting from the fencer");
843
844 if (native->source != NULL) {
845
846 mainloop_del_ipc_client(native->source);
847 native->source = NULL;
848 native->ipc = NULL;
849
850 } else if (native->ipc) {
851
852 crm_ipc_t *ipc = native->ipc;
853
854 native->ipc = NULL;
855 crm_ipc_close(ipc);
856 crm_ipc_destroy(ipc);
857 }
858
859 free(native->token); native->token = NULL;
860 stonith->state = stonith_disconnected;
861 return pcmk_ok;
862 }
863
864 static int
865 stonith_api_del_callback(stonith_t * stonith, int call_id, bool all_callbacks)
866 {
867 stonith_private_t *private = stonith->st_private;
868
869 if (all_callbacks) {
870 private->op_callback = NULL;
871 g_hash_table_destroy(private->stonith_op_callback_table);
872 private->stonith_op_callback_table = pcmk__intkey_table(stonith_destroy_op_callback);
873
874 } else if (call_id == 0) {
875 private->op_callback = NULL;
876
877 } else {
878 pcmk__intkey_table_remove(private->stonith_op_callback_table, call_id);
879 }
880 return pcmk_ok;
881 }
882
883
884
885
886
887
888
889
890
891
892
893
894 static void
895 invoke_fence_action_callback(stonith_t *st, int call_id,
896 pcmk__action_result_t *result,
897 void *userdata,
898 void (*callback) (stonith_t *st,
899 stonith_callback_data_t *data))
900 {
901 stonith_callback_data_t data = { 0, };
902
903 data.call_id = call_id;
904 data.rc = pcmk_rc2legacy(stonith__result2rc(result));
905 data.userdata = userdata;
906 data.opaque = (void *) result;
907
908 callback(st, &data);
909 }
910
911
912
913
914
915
916
917
918
919
920
921
922 static void
923 invoke_registered_callbacks(stonith_t *stonith, xmlNode *msg, int call_id)
924 {
925 stonith_private_t *private = NULL;
926 stonith_callback_client_t *cb_info = NULL;
927 pcmk__action_result_t result = PCMK__UNKNOWN_RESULT;
928
929 CRM_CHECK(stonith != NULL, return);
930 CRM_CHECK(stonith->st_private != NULL, return);
931
932 private = stonith->st_private;
933
934 if (msg == NULL) {
935
936 pcmk__set_result(&result, CRM_EX_ERROR, PCMK_EXEC_TIMEOUT,
937 "Fencer accepted request but did not reply in time");
938 CRM_LOG_ASSERT(call_id > 0);
939
940 } else {
941
942 if ((crm_element_value_int(msg, F_STONITH_CALLID, &call_id) != 0)
943 || (call_id <= 0)) {
944 crm_log_xml_warn(msg, "Bad fencer reply");
945 }
946 stonith__xe_get_result(msg, &result);
947 }
948
949 if (call_id > 0) {
950 cb_info = pcmk__intkey_table_lookup(private->stonith_op_callback_table,
951 call_id);
952 }
953
954 if ((cb_info != NULL) && (cb_info->callback != NULL)
955 && (pcmk__result_ok(&result) || !(cb_info->only_success))) {
956 crm_trace("Invoking callback %s for call %d",
957 pcmk__s(cb_info->id, "without ID"), call_id);
958 invoke_fence_action_callback(stonith, call_id, &result,
959 cb_info->user_data, cb_info->callback);
960
961 } else if ((private->op_callback == NULL) && !pcmk__result_ok(&result)) {
962 crm_warn("Fencing action without registered callback failed: %d (%s%s%s)",
963 result.exit_status,
964 pcmk_exec_status_str(result.execution_status),
965 ((result.exit_reason == NULL)? "" : ": "),
966 ((result.exit_reason == NULL)? "" : result.exit_reason));
967 crm_log_xml_debug(msg, "Failed fence update");
968 }
969
970 if (private->op_callback != NULL) {
971 crm_trace("Invoking global callback for call %d", call_id);
972 invoke_fence_action_callback(stonith, call_id, &result, NULL,
973 private->op_callback);
974 }
975
976 if (cb_info != NULL) {
977 stonith_api_del_callback(stonith, call_id, FALSE);
978 }
979 pcmk__reset_result(&result);
980 }
981
982 static gboolean
983 stonith_async_timeout_handler(gpointer data)
984 {
985 struct timer_rec_s *timer = data;
986
987 crm_err("Async call %d timed out after %dms", timer->call_id, timer->timeout);
988 invoke_registered_callbacks(timer->stonith, NULL, timer->call_id);
989
990
991
992
993 return TRUE;
994 }
995
996 static void
997 set_callback_timeout(stonith_callback_client_t * callback, stonith_t * stonith, int call_id,
998 int timeout)
999 {
1000 struct timer_rec_s *async_timer = callback->timer;
1001
1002 if (timeout <= 0) {
1003 return;
1004 }
1005
1006 if (!async_timer) {
1007 async_timer = calloc(1, sizeof(struct timer_rec_s));
1008 callback->timer = async_timer;
1009 }
1010
1011 async_timer->stonith = stonith;
1012 async_timer->call_id = call_id;
1013
1014
1015
1016 async_timer->timeout = (timeout + 60) * 1000;
1017 if (async_timer->ref) {
1018 g_source_remove(async_timer->ref);
1019 }
1020 async_timer->ref =
1021 g_timeout_add(async_timer->timeout, stonith_async_timeout_handler, async_timer);
1022 }
1023
1024 static void
1025 update_callback_timeout(int call_id, int timeout, stonith_t * st)
1026 {
1027 stonith_callback_client_t *callback = NULL;
1028 stonith_private_t *private = st->st_private;
1029
1030 callback = pcmk__intkey_table_lookup(private->stonith_op_callback_table,
1031 call_id);
1032 if (!callback || !callback->allow_timeout_updates) {
1033 return;
1034 }
1035
1036 set_callback_timeout(callback, st, call_id, timeout);
1037 }
1038
1039 static int
1040 stonith_dispatch_internal(const char *buffer, ssize_t length, gpointer userdata)
1041 {
1042 const char *type = NULL;
1043 struct notify_blob_s blob;
1044
1045 stonith_t *st = userdata;
1046 stonith_private_t *private = NULL;
1047
1048 CRM_ASSERT(st != NULL);
1049 private = st->st_private;
1050
1051 blob.stonith = st;
1052 blob.xml = string2xml(buffer);
1053 if (blob.xml == NULL) {
1054 crm_warn("Received malformed message from fencer: %s", buffer);
1055 return 0;
1056 }
1057
1058
1059 type = crm_element_value(blob.xml, F_TYPE);
1060 crm_trace("Activating %s callbacks...", type);
1061
1062 if (pcmk__str_eq(type, T_STONITH_NG, pcmk__str_none)) {
1063 invoke_registered_callbacks(st, blob.xml, 0);
1064
1065 } else if (pcmk__str_eq(type, T_STONITH_NOTIFY, pcmk__str_none)) {
1066 foreach_notify_entry(private, stonith_send_notification, &blob);
1067 } else if (pcmk__str_eq(type, T_STONITH_TIMEOUT_VALUE, pcmk__str_none)) {
1068 int call_id = 0;
1069 int timeout = 0;
1070
1071 crm_element_value_int(blob.xml, F_STONITH_TIMEOUT, &timeout);
1072 crm_element_value_int(blob.xml, F_STONITH_CALLID, &call_id);
1073
1074 update_callback_timeout(call_id, timeout, st);
1075 } else {
1076 crm_err("Unknown message type: %s", type);
1077 crm_log_xml_warn(blob.xml, "BadReply");
1078 }
1079
1080 free_xml(blob.xml);
1081 return 1;
1082 }
1083
1084 static int
1085 stonith_api_signon(stonith_t * stonith, const char *name, int *stonith_fd)
1086 {
1087 int rc = pcmk_ok;
1088 stonith_private_t *native = NULL;
1089 const char *display_name = name? name : "client";
1090
1091 struct ipc_client_callbacks st_callbacks = {
1092 .dispatch = stonith_dispatch_internal,
1093 .destroy = stonith_connection_destroy
1094 };
1095
1096 CRM_CHECK(stonith != NULL, return -EINVAL);
1097
1098 native = stonith->st_private;
1099 CRM_ASSERT(native != NULL);
1100
1101 crm_debug("Attempting fencer connection by %s with%s mainloop",
1102 display_name, (stonith_fd? "out" : ""));
1103
1104 stonith->state = stonith_connected_command;
1105 if (stonith_fd) {
1106
1107 native->ipc = crm_ipc_new("stonith-ng", 0);
1108
1109 if (native->ipc && crm_ipc_connect(native->ipc)) {
1110 *stonith_fd = crm_ipc_get_fd(native->ipc);
1111 } else if (native->ipc) {
1112 crm_ipc_close(native->ipc);
1113 crm_ipc_destroy(native->ipc);
1114 native->ipc = NULL;
1115 }
1116
1117 } else {
1118
1119 native->source =
1120 mainloop_add_ipc_client("stonith-ng", G_PRIORITY_MEDIUM, 0, stonith, &st_callbacks);
1121 native->ipc = mainloop_get_ipc_client(native->source);
1122 }
1123
1124 if (native->ipc == NULL) {
1125 rc = -ENOTCONN;
1126 } else {
1127 xmlNode *reply = NULL;
1128 xmlNode *hello = create_xml_node(NULL, "stonith_command");
1129
1130 crm_xml_add(hello, F_TYPE, T_STONITH_NG);
1131 crm_xml_add(hello, F_STONITH_OPERATION, CRM_OP_REGISTER);
1132 crm_xml_add(hello, F_STONITH_CLIENTNAME, name);
1133 rc = crm_ipc_send(native->ipc, hello, crm_ipc_client_response, -1, &reply);
1134
1135 if (rc < 0) {
1136 crm_debug("Couldn't register with the fencer: %s "
1137 CRM_XS " rc=%d", pcmk_strerror(rc), rc);
1138 rc = -ECOMM;
1139
1140 } else if (reply == NULL) {
1141 crm_debug("Couldn't register with the fencer: no reply");
1142 rc = -EPROTO;
1143
1144 } else {
1145 const char *msg_type = crm_element_value(reply, F_STONITH_OPERATION);
1146
1147 native->token = crm_element_value_copy(reply, F_STONITH_CLIENTID);
1148 if (!pcmk__str_eq(msg_type, CRM_OP_REGISTER, pcmk__str_none)) {
1149 crm_debug("Couldn't register with the fencer: invalid reply type '%s'",
1150 (msg_type? msg_type : "(missing)"));
1151 crm_log_xml_debug(reply, "Invalid fencer reply");
1152 rc = -EPROTO;
1153
1154 } else if (native->token == NULL) {
1155 crm_debug("Couldn't register with the fencer: no token in reply");
1156 crm_log_xml_debug(reply, "Invalid fencer reply");
1157 rc = -EPROTO;
1158
1159 } else {
1160 crm_debug("Connection to fencer by %s succeeded (registration token: %s)",
1161 display_name, native->token);
1162 rc = pcmk_ok;
1163 }
1164 }
1165
1166 free_xml(reply);
1167 free_xml(hello);
1168 }
1169
1170 if (rc != pcmk_ok) {
1171 crm_debug("Connection attempt to fencer by %s failed: %s "
1172 CRM_XS " rc=%d", display_name, pcmk_strerror(rc), rc);
1173 stonith->cmds->disconnect(stonith);
1174 }
1175 return rc;
1176 }
1177
1178 static int
1179 stonith_set_notification(stonith_t * stonith, const char *callback, int enabled)
1180 {
1181 int rc = pcmk_ok;
1182 xmlNode *notify_msg = create_xml_node(NULL, __func__);
1183 stonith_private_t *native = stonith->st_private;
1184
1185 if (stonith->state != stonith_disconnected) {
1186
1187 crm_xml_add(notify_msg, F_STONITH_OPERATION, T_STONITH_NOTIFY);
1188 if (enabled) {
1189 crm_xml_add(notify_msg, F_STONITH_NOTIFY_ACTIVATE, callback);
1190 } else {
1191 crm_xml_add(notify_msg, F_STONITH_NOTIFY_DEACTIVATE, callback);
1192 }
1193
1194 rc = crm_ipc_send(native->ipc, notify_msg, crm_ipc_client_response, -1, NULL);
1195 if (rc < 0) {
1196 crm_perror(LOG_DEBUG, "Couldn't register for fencing notifications: %d", rc);
1197 rc = -ECOMM;
1198 } else {
1199 rc = pcmk_ok;
1200 }
1201 }
1202
1203 free_xml(notify_msg);
1204 return rc;
1205 }
1206
1207 static int
1208 stonith_api_add_notification(stonith_t * stonith, const char *event,
1209 void (*callback) (stonith_t * stonith, stonith_event_t * e))
1210 {
1211 GList *list_item = NULL;
1212 stonith_notify_client_t *new_client = NULL;
1213 stonith_private_t *private = NULL;
1214
1215 private = stonith->st_private;
1216 crm_trace("Adding callback for %s events (%d)", event, g_list_length(private->notify_list));
1217
1218 new_client = calloc(1, sizeof(stonith_notify_client_t));
1219 new_client->event = event;
1220 new_client->notify = callback;
1221
1222 list_item = g_list_find_custom(private->notify_list, new_client, stonithlib_GCompareFunc);
1223
1224 if (list_item != NULL) {
1225 crm_warn("Callback already present");
1226 free(new_client);
1227 return -ENOTUNIQ;
1228
1229 } else {
1230 private->notify_list = g_list_append(private->notify_list, new_client);
1231
1232 stonith_set_notification(stonith, event, 1);
1233
1234 crm_trace("Callback added (%d)", g_list_length(private->notify_list));
1235 }
1236 return pcmk_ok;
1237 }
1238
1239 static void
1240 del_notify_entry(gpointer data, gpointer user_data)
1241 {
1242 stonith_notify_client_t *entry = data;
1243 stonith_t * stonith = user_data;
1244
1245 if (!entry->delete) {
1246 crm_debug("Removing callback for %s events", entry->event);
1247 stonith_api_del_notification(stonith, entry->event);
1248 }
1249 }
1250
1251 static int
1252 stonith_api_del_notification(stonith_t * stonith, const char *event)
1253 {
1254 GList *list_item = NULL;
1255 stonith_notify_client_t *new_client = NULL;
1256 stonith_private_t *private = stonith->st_private;
1257
1258 if (event == NULL) {
1259 foreach_notify_entry(private, del_notify_entry, stonith);
1260 crm_trace("Removed callback");
1261
1262 return pcmk_ok;
1263 }
1264
1265 crm_debug("Removing callback for %s events", event);
1266
1267 new_client = calloc(1, sizeof(stonith_notify_client_t));
1268 new_client->event = event;
1269 new_client->notify = NULL;
1270
1271 list_item = g_list_find_custom(private->notify_list, new_client, stonithlib_GCompareFunc);
1272
1273 stonith_set_notification(stonith, event, 0);
1274
1275 if (list_item != NULL) {
1276 stonith_notify_client_t *list_client = list_item->data;
1277
1278 if (private->notify_refcnt) {
1279 list_client->delete = TRUE;
1280 private->notify_deletes = TRUE;
1281 } else {
1282 private->notify_list = g_list_remove(private->notify_list, list_client);
1283 free(list_client);
1284 }
1285
1286 crm_trace("Removed callback");
1287
1288 } else {
1289 crm_trace("Callback not present");
1290 }
1291 free(new_client);
1292 return pcmk_ok;
1293 }
1294
1295 static int
1296 stonith_api_add_callback(stonith_t * stonith, int call_id, int timeout, int options,
1297 void *user_data, const char *callback_name,
1298 void (*callback) (stonith_t * st, stonith_callback_data_t * data))
1299 {
1300 stonith_callback_client_t *blob = NULL;
1301 stonith_private_t *private = NULL;
1302
1303 CRM_CHECK(stonith != NULL, return -EINVAL);
1304 CRM_CHECK(stonith->st_private != NULL, return -EINVAL);
1305 private = stonith->st_private;
1306
1307 if (call_id == 0) {
1308 private->op_callback = callback;
1309
1310 } else if (call_id < 0) {
1311 if (!(options & st_opt_report_only_success)) {
1312 pcmk__action_result_t result = PCMK__UNKNOWN_RESULT;
1313
1314 crm_trace("Call failed, calling %s: %s", callback_name, pcmk_strerror(call_id));
1315 pcmk__set_result(&result, CRM_EX_ERROR,
1316 stonith__legacy2status(call_id), NULL);
1317 invoke_fence_action_callback(stonith, call_id, &result,
1318 user_data, callback);
1319 } else {
1320 crm_warn("Fencer call failed: %s", pcmk_strerror(call_id));
1321 }
1322 return FALSE;
1323 }
1324
1325 blob = calloc(1, sizeof(stonith_callback_client_t));
1326 blob->id = callback_name;
1327 blob->only_success = (options & st_opt_report_only_success) ? TRUE : FALSE;
1328 blob->user_data = user_data;
1329 blob->callback = callback;
1330 blob->allow_timeout_updates = (options & st_opt_timeout_updates) ? TRUE : FALSE;
1331
1332 if (timeout > 0) {
1333 set_callback_timeout(blob, stonith, call_id, timeout);
1334 }
1335
1336 pcmk__intkey_table_insert(private->stonith_op_callback_table, call_id,
1337 blob);
1338 crm_trace("Added callback to %s for call %d", callback_name, call_id);
1339
1340 return TRUE;
1341 }
1342
1343 static void
1344 stonith_dump_pending_op(gpointer key, gpointer value, gpointer user_data)
1345 {
1346 int call = GPOINTER_TO_INT(key);
1347 stonith_callback_client_t *blob = value;
1348
1349 crm_debug("Call %d (%s): pending", call, pcmk__s(blob->id, "no ID"));
1350 }
1351
1352 void
1353 stonith_dump_pending_callbacks(stonith_t * stonith)
1354 {
1355 stonith_private_t *private = stonith->st_private;
1356
1357 if (private->stonith_op_callback_table == NULL) {
1358 return;
1359 }
1360 return g_hash_table_foreach(private->stonith_op_callback_table, stonith_dump_pending_op, NULL);
1361 }
1362
1363
1364
1365
1366
1367
1368
1369
1370 static xmlNode *
1371 get_event_data_xml(xmlNode *msg, const char *ntype)
1372 {
1373 char *data_addr = crm_strdup_printf("//%s", ntype);
1374 xmlNode *data = get_xpath_object(data_addr, msg, LOG_DEBUG);
1375
1376 free(data_addr);
1377 return data;
1378 }
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399 static stonith_event_t *
1400 xml_to_event(xmlNode *msg)
1401 {
1402 stonith_event_t *event = calloc(1, sizeof(stonith_event_t));
1403 struct event_private *event_private = NULL;
1404
1405 CRM_ASSERT(event != NULL);
1406
1407 event->opaque = calloc(1, sizeof(struct event_private));
1408 CRM_ASSERT(event->opaque != NULL);
1409 event_private = (struct event_private *) event->opaque;
1410
1411 crm_log_xml_trace(msg, "stonith_notify");
1412
1413
1414 stonith__xe_get_result(msg, &event_private->result);
1415 event->operation = crm_element_value_copy(msg, F_STONITH_OPERATION);
1416
1417
1418 event->result = pcmk_rc2legacy(stonith__result2rc(&event_private->result));
1419
1420
1421
1422 if (pcmk__str_eq(event->operation, T_STONITH_NOTIFY_FENCE,
1423 pcmk__str_none)) {
1424 xmlNode *data = get_event_data_xml(msg, event->operation);
1425
1426 if (data == NULL) {
1427 crm_err("No data for %s event", event->operation);
1428 crm_log_xml_notice(msg, "BadEvent");
1429 } else {
1430 event->origin = crm_element_value_copy(data, F_STONITH_ORIGIN);
1431 event->action = crm_element_value_copy(data, F_STONITH_ACTION);
1432 event->target = crm_element_value_copy(data, F_STONITH_TARGET);
1433 event->executioner = crm_element_value_copy(data, F_STONITH_DELEGATE);
1434 event->id = crm_element_value_copy(data, F_STONITH_REMOTE_OP_ID);
1435 event->client_origin = crm_element_value_copy(data, F_STONITH_CLIENTNAME);
1436 event->device = crm_element_value_copy(data, F_STONITH_DEVICE);
1437 }
1438
1439 } else if (pcmk__str_any_of(event->operation,
1440 STONITH_OP_DEVICE_ADD, STONITH_OP_DEVICE_DEL,
1441 STONITH_OP_LEVEL_ADD, STONITH_OP_LEVEL_DEL,
1442 NULL)) {
1443 xmlNode *data = get_event_data_xml(msg, event->operation);
1444
1445 if (data == NULL) {
1446 crm_err("No data for %s event", event->operation);
1447 crm_log_xml_notice(msg, "BadEvent");
1448 } else {
1449 event->device = crm_element_value_copy(data, F_STONITH_DEVICE);
1450 }
1451 }
1452
1453 return event;
1454 }
1455
1456 static void
1457 event_free(stonith_event_t * event)
1458 {
1459 struct event_private *event_private = event->opaque;
1460
1461 free(event->id);
1462 free(event->type);
1463 free(event->message);
1464 free(event->operation);
1465 free(event->origin);
1466 free(event->action);
1467 free(event->target);
1468 free(event->executioner);
1469 free(event->device);
1470 free(event->client_origin);
1471 pcmk__reset_result(&event_private->result);
1472 free(event->opaque);
1473 free(event);
1474 }
1475
1476 static void
1477 stonith_send_notification(gpointer data, gpointer user_data)
1478 {
1479 struct notify_blob_s *blob = user_data;
1480 stonith_notify_client_t *entry = data;
1481 stonith_event_t *st_event = NULL;
1482 const char *event = NULL;
1483
1484 if (blob->xml == NULL) {
1485 crm_warn("Skipping callback - NULL message");
1486 return;
1487 }
1488
1489 event = crm_element_value(blob->xml, F_SUBTYPE);
1490
1491 if (entry == NULL) {
1492 crm_warn("Skipping callback - NULL callback client");
1493 return;
1494
1495 } else if (entry->delete) {
1496 crm_trace("Skipping callback - marked for deletion");
1497 return;
1498
1499 } else if (entry->notify == NULL) {
1500 crm_warn("Skipping callback - NULL callback");
1501 return;
1502
1503 } else if (!pcmk__str_eq(entry->event, event, pcmk__str_none)) {
1504 crm_trace("Skipping callback - event mismatch %p/%s vs. %s", entry, entry->event, event);
1505 return;
1506 }
1507
1508 st_event = xml_to_event(blob->xml);
1509
1510 crm_trace("Invoking callback for %p/%s event...", entry, event);
1511 entry->notify(blob->stonith, st_event);
1512 crm_trace("Callback invoked...");
1513
1514 event_free(st_event);
1515 }
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531 static int
1532 stonith_send_command(stonith_t * stonith, const char *op, xmlNode * data, xmlNode ** output_data,
1533 int call_options, int timeout)
1534 {
1535 int rc = 0;
1536 int reply_id = -1;
1537
1538 xmlNode *op_msg = NULL;
1539 xmlNode *op_reply = NULL;
1540 stonith_private_t *native = NULL;
1541
1542 CRM_ASSERT(stonith && stonith->st_private && op);
1543 native = stonith->st_private;
1544
1545 if (output_data != NULL) {
1546 *output_data = NULL;
1547 }
1548
1549 if ((stonith->state == stonith_disconnected) || (native->token == NULL)) {
1550 return -ENOTCONN;
1551 }
1552
1553
1554
1555
1556
1557 stonith->call_id++;
1558 if (stonith->call_id < 1) {
1559 stonith->call_id = 1;
1560 }
1561
1562 op_msg = stonith_create_op(stonith->call_id, native->token, op, data, call_options);
1563 if (op_msg == NULL) {
1564 return -EINVAL;
1565 }
1566
1567 crm_xml_add_int(op_msg, F_STONITH_TIMEOUT, timeout);
1568 crm_trace("Sending %s message to fencer with timeout %ds", op, timeout);
1569
1570 if (data) {
1571 const char *delay_s = crm_element_value(data, F_STONITH_DELAY);
1572
1573 if (delay_s) {
1574 crm_xml_add(op_msg, F_STONITH_DELAY, delay_s);
1575 }
1576 }
1577
1578 {
1579 enum crm_ipc_flags ipc_flags = crm_ipc_flags_none;
1580
1581 if (call_options & st_opt_sync_call) {
1582 pcmk__set_ipc_flags(ipc_flags, "stonith command",
1583 crm_ipc_client_response);
1584 }
1585 rc = crm_ipc_send(native->ipc, op_msg, ipc_flags,
1586 1000 * (timeout + 60), &op_reply);
1587 }
1588 free_xml(op_msg);
1589
1590 if (rc < 0) {
1591 crm_perror(LOG_ERR, "Couldn't perform %s operation (timeout=%ds): %d", op, timeout, rc);
1592 rc = -ECOMM;
1593 goto done;
1594 }
1595
1596 crm_log_xml_trace(op_reply, "Reply");
1597
1598 if (!(call_options & st_opt_sync_call)) {
1599 crm_trace("Async call %d, returning", stonith->call_id);
1600 free_xml(op_reply);
1601 return stonith->call_id;
1602 }
1603
1604 rc = pcmk_ok;
1605 crm_element_value_int(op_reply, F_STONITH_CALLID, &reply_id);
1606
1607 if (reply_id == stonith->call_id) {
1608 pcmk__action_result_t result = PCMK__UNKNOWN_RESULT;
1609
1610 crm_trace("Synchronous reply %d received", reply_id);
1611
1612 stonith__xe_get_result(op_reply, &result);
1613 rc = pcmk_rc2legacy(stonith__result2rc(&result));
1614 pcmk__reset_result(&result);
1615
1616 if ((call_options & st_opt_discard_reply) || output_data == NULL) {
1617 crm_trace("Discarding reply");
1618
1619 } else {
1620 *output_data = op_reply;
1621 op_reply = NULL;
1622 }
1623
1624 } else if (reply_id <= 0) {
1625 crm_err("Received bad reply: No id set");
1626 crm_log_xml_err(op_reply, "Bad reply");
1627 free_xml(op_reply);
1628 rc = -ENOMSG;
1629
1630 } else {
1631 crm_err("Received bad reply: %d (wanted %d)", reply_id, stonith->call_id);
1632 crm_log_xml_err(op_reply, "Old reply");
1633 free_xml(op_reply);
1634 rc = -ENOMSG;
1635 }
1636
1637 done:
1638 if (crm_ipc_connected(native->ipc) == FALSE) {
1639 crm_err("Fencer disconnected");
1640 free(native->token); native->token = NULL;
1641 stonith->state = stonith_disconnected;
1642 }
1643
1644 free_xml(op_reply);
1645 return rc;
1646 }
1647
1648
1649 bool
1650 stonith_dispatch(stonith_t * st)
1651 {
1652 gboolean stay_connected = TRUE;
1653 stonith_private_t *private = NULL;
1654
1655 CRM_ASSERT(st != NULL);
1656 private = st->st_private;
1657
1658 while (crm_ipc_ready(private->ipc)) {
1659
1660 if (crm_ipc_read(private->ipc) > 0) {
1661 const char *msg = crm_ipc_buffer(private->ipc);
1662
1663 stonith_dispatch_internal(msg, strlen(msg), st);
1664 }
1665
1666 if (crm_ipc_connected(private->ipc) == FALSE) {
1667 crm_err("Connection closed");
1668 stay_connected = FALSE;
1669 }
1670 }
1671
1672 return stay_connected;
1673 }
1674
1675 static int
1676 stonith_api_free(stonith_t * stonith)
1677 {
1678 int rc = pcmk_ok;
1679
1680 crm_trace("Destroying %p", stonith);
1681
1682 if (stonith->state != stonith_disconnected) {
1683 crm_trace("Disconnecting %p first", stonith);
1684 rc = stonith->cmds->disconnect(stonith);
1685 }
1686
1687 if (stonith->state == stonith_disconnected) {
1688 stonith_private_t *private = stonith->st_private;
1689
1690 crm_trace("Removing %d callbacks", g_hash_table_size(private->stonith_op_callback_table));
1691 g_hash_table_destroy(private->stonith_op_callback_table);
1692
1693 crm_trace("Destroying %d notification clients", g_list_length(private->notify_list));
1694 g_list_free_full(private->notify_list, free);
1695
1696 free(stonith->st_private);
1697 free(stonith->cmds);
1698 free(stonith);
1699
1700 } else {
1701 crm_err("Not free'ing active connection: %s (%d)", pcmk_strerror(rc), rc);
1702 }
1703
1704 return rc;
1705 }
1706
1707 void
1708 stonith_api_delete(stonith_t * stonith)
1709 {
1710 crm_trace("Destroying %p", stonith);
1711 if(stonith) {
1712 stonith->cmds->free(stonith);
1713 }
1714 }
1715
1716 static int
1717 stonith_api_validate(stonith_t *st, int call_options, const char *rsc_id,
1718 const char *namespace_s, const char *agent,
1719 const stonith_key_value_t *params, int timeout_sec,
1720 char **output, char **error_output)
1721 {
1722
1723
1724
1725
1726
1727 int rc = pcmk_ok;
1728
1729
1730
1731
1732
1733 const char *target = "node1";
1734 const char *host_arg = NULL;
1735
1736 GHashTable *params_table = pcmk__strkey_table(free, free);
1737
1738
1739 for (; params; params = params->next) {
1740 if (pcmk__str_eq(params->key, PCMK_STONITH_HOST_ARGUMENT,
1741 pcmk__str_none)) {
1742 host_arg = params->value;
1743 }
1744 if (!pcmk_stonith_param(params->key)) {
1745 g_hash_table_insert(params_table, strdup(params->key),
1746 strdup(params->value));
1747 }
1748 }
1749
1750 #if SUPPORT_CIBSECRETS
1751 rc = pcmk__substitute_secrets(rsc_id, params_table);
1752 if (rc != pcmk_rc_ok) {
1753 crm_warn("Could not replace secret parameters for validation of %s: %s",
1754 agent, pcmk_rc_str(rc));
1755
1756 }
1757 #endif
1758
1759 if (output) {
1760 *output = NULL;
1761 }
1762 if (error_output) {
1763 *error_output = NULL;
1764 }
1765
1766 if (timeout_sec <= 0) {
1767 timeout_sec = CRMD_METADATA_CALL_TIMEOUT;
1768 }
1769
1770 switch (stonith_get_namespace(agent, namespace_s)) {
1771 case st_namespace_rhcs:
1772 rc = stonith__rhcs_validate(st, call_options, target, agent,
1773 params_table, host_arg, timeout_sec,
1774 output, error_output);
1775 break;
1776
1777 #if HAVE_STONITH_STONITH_H
1778 case st_namespace_lha:
1779 rc = stonith__lha_validate(st, call_options, target, agent,
1780 params_table, timeout_sec, output,
1781 error_output);
1782 break;
1783 #endif
1784
1785 case st_namespace_invalid:
1786 errno = ENOENT;
1787 rc = -errno;
1788
1789 if (error_output) {
1790 *error_output = crm_strdup_printf("Agent %s not found", agent);
1791 } else {
1792 crm_err("Agent %s not found", agent);
1793 }
1794
1795 break;
1796
1797 default:
1798 errno = EOPNOTSUPP;
1799 rc = -errno;
1800
1801 if (error_output) {
1802 *error_output = crm_strdup_printf("Agent %s does not support validation",
1803 agent);
1804 } else {
1805 crm_err("Agent %s does not support validation", agent);
1806 }
1807
1808 break;
1809 }
1810
1811 g_hash_table_destroy(params_table);
1812 return rc;
1813 }
1814
1815 stonith_t *
1816 stonith_api_new(void)
1817 {
1818 stonith_t *new_stonith = NULL;
1819 stonith_private_t *private = NULL;
1820
1821 new_stonith = calloc(1, sizeof(stonith_t));
1822 if (new_stonith == NULL) {
1823 return NULL;
1824 }
1825
1826 private = calloc(1, sizeof(stonith_private_t));
1827 if (private == NULL) {
1828 free(new_stonith);
1829 return NULL;
1830 }
1831 new_stonith->st_private = private;
1832
1833 private->stonith_op_callback_table = pcmk__intkey_table(stonith_destroy_op_callback);
1834 private->notify_list = NULL;
1835 private->notify_refcnt = 0;
1836 private->notify_deletes = FALSE;
1837
1838 new_stonith->call_id = 1;
1839 new_stonith->state = stonith_disconnected;
1840
1841 new_stonith->cmds = calloc(1, sizeof(stonith_api_operations_t));
1842 if (new_stonith->cmds == NULL) {
1843 free(new_stonith->st_private);
1844 free(new_stonith);
1845 return NULL;
1846 }
1847
1848
1849 new_stonith->cmds->free = stonith_api_free;
1850 new_stonith->cmds->connect = stonith_api_signon;
1851 new_stonith->cmds->disconnect = stonith_api_signoff;
1852
1853 new_stonith->cmds->list = stonith_api_list;
1854 new_stonith->cmds->monitor = stonith_api_monitor;
1855 new_stonith->cmds->status = stonith_api_status;
1856 new_stonith->cmds->fence = stonith_api_fence;
1857 new_stonith->cmds->fence_with_delay = stonith_api_fence_with_delay;
1858 new_stonith->cmds->confirm = stonith_api_confirm;
1859 new_stonith->cmds->history = stonith_api_history;
1860
1861 new_stonith->cmds->list_agents = stonith_api_device_list;
1862 new_stonith->cmds->metadata = stonith_api_device_metadata;
1863
1864 new_stonith->cmds->query = stonith_api_query;
1865 new_stonith->cmds->remove_device = stonith_api_remove_device;
1866 new_stonith->cmds->register_device = stonith_api_register_device;
1867
1868 new_stonith->cmds->remove_level = stonith_api_remove_level;
1869 new_stonith->cmds->remove_level_full = stonith_api_remove_level_full;
1870 new_stonith->cmds->register_level = stonith_api_register_level;
1871 new_stonith->cmds->register_level_full = stonith_api_register_level_full;
1872
1873 new_stonith->cmds->remove_callback = stonith_api_del_callback;
1874 new_stonith->cmds->register_callback = stonith_api_add_callback;
1875 new_stonith->cmds->remove_notification = stonith_api_del_notification;
1876 new_stonith->cmds->register_notification = stonith_api_add_notification;
1877
1878 new_stonith->cmds->validate = stonith_api_validate;
1879
1880
1881 return new_stonith;
1882 }
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893 int
1894 stonith_api_connect_retry(stonith_t *st, const char *name, int max_attempts)
1895 {
1896 int rc = -EINVAL;
1897
1898 for (int attempt = 1; attempt <= max_attempts; attempt++) {
1899 rc = st->cmds->connect(st, name, NULL);
1900 if (rc == pcmk_ok) {
1901 return pcmk_ok;
1902 } else if (attempt < max_attempts) {
1903 crm_notice("Fencer connection attempt %d of %d failed (retrying in 2s): %s "
1904 CRM_XS " rc=%d",
1905 attempt, max_attempts, pcmk_strerror(rc), rc);
1906 sleep(2);
1907 }
1908 }
1909 crm_notice("Could not connect to fencer: %s " CRM_XS " rc=%d",
1910 pcmk_strerror(rc), rc);
1911 return rc;
1912 }
1913
1914 stonith_key_value_t *
1915 stonith_key_value_add(stonith_key_value_t * head, const char *key, const char *value)
1916 {
1917 stonith_key_value_t *p, *end;
1918
1919 p = calloc(1, sizeof(stonith_key_value_t));
1920 pcmk__str_update(&p->key, key);
1921 pcmk__str_update(&p->value, value);
1922
1923 end = head;
1924 while (end && end->next) {
1925 end = end->next;
1926 }
1927
1928 if (end) {
1929 end->next = p;
1930 } else {
1931 head = p;
1932 }
1933
1934 return head;
1935 }
1936
1937 void
1938 stonith_key_value_freeall(stonith_key_value_t * head, int keys, int values)
1939 {
1940 stonith_key_value_t *p;
1941
1942 while (head) {
1943 p = head->next;
1944 if (keys) {
1945 free(head->key);
1946 }
1947 if (values) {
1948 free(head->value);
1949 }
1950 free(head);
1951 head = p;
1952 }
1953 }
1954
1955 #define api_log_open() openlog("stonith-api", LOG_CONS | LOG_NDELAY | LOG_PID, LOG_DAEMON)
1956 #define api_log(level, fmt, args...) syslog(level, "%s: "fmt, __func__, args)
1957
1958 int
1959 stonith_api_kick(uint32_t nodeid, const char *uname, int timeout, bool off)
1960 {
1961 int rc = pcmk_ok;
1962 stonith_t *st = stonith_api_new();
1963 const char *action = off? "off" : "reboot";
1964
1965 api_log_open();
1966 if (st == NULL) {
1967 api_log(LOG_ERR, "API initialization failed, could not kick (%s) node %u/%s",
1968 action, nodeid, uname);
1969 return -EPROTO;
1970 }
1971
1972 rc = st->cmds->connect(st, "stonith-api", NULL);
1973 if (rc != pcmk_ok) {
1974 api_log(LOG_ERR, "Connection failed, could not kick (%s) node %u/%s : %s (%d)",
1975 action, nodeid, uname, pcmk_strerror(rc), rc);
1976 } else {
1977 char *name = (uname == NULL)? pcmk__itoa(nodeid) : strdup(uname);
1978 int opts = 0;
1979
1980 stonith__set_call_options(opts, name,
1981 st_opt_sync_call|st_opt_allow_suicide);
1982 if ((uname == NULL) && (nodeid > 0)) {
1983 stonith__set_call_options(opts, name, st_opt_cs_nodeid);
1984 }
1985 rc = st->cmds->fence(st, opts, name, action, timeout, 0);
1986 free(name);
1987
1988 if (rc != pcmk_ok) {
1989 api_log(LOG_ERR, "Could not kick (%s) node %u/%s : %s (%d)",
1990 action, nodeid, uname, pcmk_strerror(rc), rc);
1991 } else {
1992 api_log(LOG_NOTICE, "Node %u/%s kicked: %s", nodeid, uname, action);
1993 }
1994 }
1995
1996 stonith_api_delete(st);
1997 return rc;
1998 }
1999
2000 time_t
2001 stonith_api_time(uint32_t nodeid, const char *uname, bool in_progress)
2002 {
2003 int rc = pcmk_ok;
2004 time_t when = 0;
2005 stonith_t *st = stonith_api_new();
2006 stonith_history_t *history = NULL, *hp = NULL;
2007
2008 if (st == NULL) {
2009 api_log(LOG_ERR, "Could not retrieve fence history for %u/%s: "
2010 "API initialization failed", nodeid, uname);
2011 return when;
2012 }
2013
2014 rc = st->cmds->connect(st, "stonith-api", NULL);
2015 if (rc != pcmk_ok) {
2016 api_log(LOG_NOTICE, "Connection failed: %s (%d)", pcmk_strerror(rc), rc);
2017 } else {
2018 int entries = 0;
2019 int progress = 0;
2020 int completed = 0;
2021 int opts = 0;
2022 char *name = (uname == NULL)? pcmk__itoa(nodeid) : strdup(uname);
2023
2024 stonith__set_call_options(opts, name, st_opt_sync_call);
2025 if ((uname == NULL) && (nodeid > 0)) {
2026 stonith__set_call_options(opts, name, st_opt_cs_nodeid);
2027 }
2028 rc = st->cmds->history(st, opts, name, &history, 120);
2029 free(name);
2030
2031 for (hp = history; hp; hp = hp->next) {
2032 entries++;
2033 if (in_progress) {
2034 progress++;
2035 if (hp->state != st_done && hp->state != st_failed) {
2036 when = time(NULL);
2037 }
2038
2039 } else if (hp->state == st_done) {
2040 completed++;
2041 if (hp->completed > when) {
2042 when = hp->completed;
2043 }
2044 }
2045 }
2046
2047 stonith_history_free(history);
2048
2049 if(rc == pcmk_ok) {
2050 api_log(LOG_INFO, "Found %d entries for %u/%s: %d in progress, %d completed", entries, nodeid, uname, progress, completed);
2051 } else {
2052 api_log(LOG_ERR, "Could not retrieve fence history for %u/%s: %s (%d)", nodeid, uname, pcmk_strerror(rc), rc);
2053 }
2054 }
2055
2056 stonith_api_delete(st);
2057
2058 if(when) {
2059 api_log(LOG_INFO, "Node %u/%s last kicked at: %ld", nodeid, uname, (long int)when);
2060 }
2061 return when;
2062 }
2063
2064 bool
2065 stonith_agent_exists(const char *agent, int timeout)
2066 {
2067 stonith_t *st = NULL;
2068 stonith_key_value_t *devices = NULL;
2069 stonith_key_value_t *dIter = NULL;
2070 bool rc = FALSE;
2071
2072 if (agent == NULL) {
2073 return rc;
2074 }
2075
2076 st = stonith_api_new();
2077 if (st == NULL) {
2078 crm_err("Could not list fence agents: API memory allocation failed");
2079 return FALSE;
2080 }
2081 st->cmds->list_agents(st, st_opt_sync_call, NULL, &devices, timeout == 0 ? 120 : timeout);
2082
2083 for (dIter = devices; dIter != NULL; dIter = dIter->next) {
2084 if (pcmk__str_eq(dIter->value, agent, pcmk__str_none)) {
2085 rc = TRUE;
2086 break;
2087 }
2088 }
2089
2090 stonith_key_value_freeall(devices, 1, 1);
2091 stonith_api_delete(st);
2092 return rc;
2093 }
2094
2095 const char *
2096 stonith_action_str(const char *action)
2097 {
2098 if (action == NULL) {
2099 return "fencing";
2100 } else if (!strcmp(action, "on")) {
2101 return "unfencing";
2102 } else if (!strcmp(action, "off")) {
2103 return "turning off";
2104 } else {
2105 return action;
2106 }
2107 }
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117 static void
2118 parse_list_line(const char *line, int len, GList **output)
2119 {
2120 size_t i = 0;
2121 size_t entry_start = 0;
2122
2123
2124
2125
2126
2127 if (strstr(line, "invalid") || strstr(line, "variable")) {
2128 crm_debug("Skipping list output line: %s", line);
2129 return;
2130 }
2131
2132
2133 for (i = 0; i <= len; i++) {
2134
2135 if (isspace(line[i]) || (line[i] == ',') || (line[i] == ';')
2136 || (line[i] == '\0')) {
2137
2138
2139 int rc = 0;
2140 char *entry = NULL;
2141
2142 if (i == entry_start) {
2143
2144 entry_start = i + 1;
2145 continue;
2146 }
2147
2148 entry = calloc(i - entry_start + 1, sizeof(char));
2149 CRM_ASSERT(entry != NULL);
2150
2151
2152
2153
2154
2155 rc = sscanf(line + entry_start, "%[a-zA-Z0-9_-.]", entry);
2156 if (rc != 1) {
2157 crm_warn("Could not parse list output entry: %s "
2158 CRM_XS " entry_start=%d position=%d",
2159 line + entry_start, entry_start, i);
2160 free(entry);
2161
2162 } else if (pcmk__strcase_any_of(entry, "on", "off", NULL)) {
2163
2164
2165
2166
2167
2168
2169
2170
2171 free(entry);
2172
2173 } else {
2174
2175 *output = g_list_append(*output, entry);
2176 }
2177 entry_start = i + 1;
2178 }
2179 }
2180 }
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203 GList *
2204 stonith__parse_targets(const char *target_spec)
2205 {
2206 GList *targets = NULL;
2207
2208 if (target_spec != NULL) {
2209 size_t out_len = strlen(target_spec);
2210 size_t line_start = 0;
2211
2212 for (size_t i = 0; i <= out_len; ++i) {
2213 if ((target_spec[i] == '\n') || (target_spec[i] == '\0')
2214 || ((target_spec[i] == '\\') && (target_spec[i + 1] == 'n'))) {
2215
2216
2217 int len = i - line_start;
2218
2219 if (len > 0) {
2220 char *line = strndup(target_spec + line_start, len);
2221
2222 line[len] = '\0';
2223 parse_list_line(line, len, &targets);
2224 free(line);
2225 }
2226 if (target_spec[i] == '\\') {
2227 ++i;
2228 }
2229 line_start = i + 1;
2230 }
2231 }
2232 }
2233 return targets;
2234 }
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247 const char *
2248 stonith__later_succeeded(stonith_history_t *event, stonith_history_t *top_history)
2249 {
2250 const char *other = NULL;
2251
2252 for (stonith_history_t *prev_hp = top_history; prev_hp; prev_hp = prev_hp->next) {
2253 if (prev_hp == event) {
2254 break;
2255 }
2256 if ((prev_hp->state == st_done) &&
2257 pcmk__str_eq(event->target, prev_hp->target, pcmk__str_casei) &&
2258 pcmk__str_eq(event->action, prev_hp->action, pcmk__str_none) &&
2259 ((event->completed < prev_hp->completed) ||
2260 ((event->completed == prev_hp->completed) && (event->completed_nsec < prev_hp->completed_nsec)))) {
2261
2262 if ((event->delegate == NULL)
2263 || pcmk__str_eq(event->delegate, prev_hp->delegate,
2264 pcmk__str_casei)) {
2265
2266 return prev_hp->delegate;
2267
2268 } else if (other == NULL) {
2269
2270 other = (prev_hp->delegate == NULL)? "some node" : prev_hp->delegate;
2271 }
2272 }
2273 }
2274 return other;
2275 }
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286 stonith_history_t *
2287 stonith__sort_history(stonith_history_t *history)
2288 {
2289 stonith_history_t *new = NULL, *pending = NULL, *hp, *np, *tmp;
2290
2291 for (hp = history; hp; ) {
2292 tmp = hp->next;
2293 if ((hp->state == st_done) || (hp->state == st_failed)) {
2294
2295 if ((!new) || (hp->completed > new->completed) ||
2296 ((hp->completed == new->completed) && (hp->completed_nsec > new->completed_nsec))) {
2297 hp->next = new;
2298 new = hp;
2299 } else {
2300 np = new;
2301 do {
2302 if ((!np->next) || (hp->completed > np->next->completed) ||
2303 ((hp->completed == np->next->completed) && (hp->completed_nsec > np->next->completed_nsec))) {
2304 hp->next = np->next;
2305 np->next = hp;
2306 break;
2307 }
2308 np = np->next;
2309 } while (1);
2310 }
2311 } else {
2312
2313 hp->next = pending;
2314 pending = hp;
2315 }
2316 hp = tmp;
2317 }
2318
2319
2320 if (pending) {
2321 stonith_history_t *last_pending = pending;
2322
2323 while (last_pending->next) {
2324 last_pending = last_pending->next;
2325 }
2326
2327 last_pending->next = new;
2328 new = pending;
2329 }
2330 return new;
2331 }
2332
2333
2334
2335
2336
2337
2338
2339
2340 const char *
2341 stonith_op_state_str(enum op_state state)
2342 {
2343 switch (state) {
2344 case st_query: return "querying";
2345 case st_exec: return "executing";
2346 case st_done: return "completed";
2347 case st_duplicate: return "duplicate";
2348 case st_failed: return "failed";
2349 }
2350 return "unknown";
2351 }
2352
2353 stonith_history_t *
2354 stonith__first_matching_event(stonith_history_t *history,
2355 bool (*matching_fn)(stonith_history_t *, void *),
2356 void *user_data)
2357 {
2358 for (stonith_history_t *hp = history; hp; hp = hp->next) {
2359 if (matching_fn(hp, user_data)) {
2360 return hp;
2361 }
2362 }
2363
2364 return NULL;
2365 }
2366
2367 bool
2368 stonith__event_state_pending(stonith_history_t *history, void *user_data)
2369 {
2370 return history->state != st_failed && history->state != st_done;
2371 }
2372
2373 bool
2374 stonith__event_state_eq(stonith_history_t *history, void *user_data)
2375 {
2376 return history->state == GPOINTER_TO_INT(user_data);
2377 }
2378
2379 bool
2380 stonith__event_state_neq(stonith_history_t *history, void *user_data)
2381 {
2382 return history->state != GPOINTER_TO_INT(user_data);
2383 }
2384
2385 void
2386 stonith__device_parameter_flags(uint32_t *device_flags, const char *device_name,
2387 xmlNode *metadata)
2388 {
2389 xmlXPathObjectPtr xpath = NULL;
2390 int max = 0;
2391 int lpc = 0;
2392
2393 CRM_CHECK((device_flags != NULL) && (metadata != NULL), return);
2394
2395 xpath = xpath_search(metadata, "//parameter");
2396 max = numXpathResults(xpath);
2397
2398 if (max <= 0) {
2399 freeXpathObject(xpath);
2400 return;
2401 }
2402
2403 for (lpc = 0; lpc < max; lpc++) {
2404 const char *parameter = NULL;
2405 xmlNode *match = getXpathResult(xpath, lpc);
2406
2407 CRM_LOG_ASSERT(match != NULL);
2408 if (match == NULL) {
2409 continue;
2410 }
2411
2412 parameter = crm_element_value(match, "name");
2413
2414 if (pcmk__str_eq(parameter, "plug", pcmk__str_casei)) {
2415 stonith__set_device_flags(*device_flags, device_name,
2416 st_device_supports_parameter_plug);
2417
2418 } else if (pcmk__str_eq(parameter, "port", pcmk__str_casei)) {
2419 stonith__set_device_flags(*device_flags, device_name,
2420 st_device_supports_parameter_port);
2421 }
2422 }
2423
2424 freeXpathObject(xpath);
2425 }
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445 int
2446 stonith__metadata_async(const char *agent, int timeout_sec,
2447 void (*callback)(int pid,
2448 const pcmk__action_result_t *result,
2449 void *user_data),
2450 void *user_data)
2451 {
2452 switch (stonith_get_namespace(agent, NULL)) {
2453 case st_namespace_rhcs:
2454 {
2455 stonith_action_t *action = NULL;
2456 int rc = pcmk_ok;
2457
2458 action = stonith__action_create(agent, "metadata", NULL, 0,
2459 timeout_sec, NULL, NULL, NULL);
2460
2461 rc = stonith__execute_async(action, user_data, callback, NULL);
2462 if (rc != pcmk_ok) {
2463 callback(0, stonith__action_result(action), user_data);
2464 stonith__destroy_action(action);
2465 }
2466 return pcmk_legacy2rc(rc);
2467 }
2468
2469 #if HAVE_STONITH_STONITH_H
2470 case st_namespace_lha:
2471
2472 {
2473 pcmk__action_result_t result = {
2474 .exit_status = CRM_EX_OK,
2475 .execution_status = PCMK_EXEC_DONE,
2476 .exit_reason = NULL,
2477 .action_stdout = NULL,
2478 .action_stderr = NULL,
2479 };
2480
2481 stonith__lha_metadata(agent, timeout_sec,
2482 &result.action_stdout);
2483 callback(0, &result, user_data);
2484 pcmk__reset_result(&result);
2485 return pcmk_rc_ok;
2486 }
2487 #endif
2488
2489 default:
2490 {
2491 pcmk__action_result_t result = {
2492 .exit_status = CRM_EX_NOSUCH,
2493 .execution_status = PCMK_EXEC_ERROR_HARD,
2494 .exit_reason = crm_strdup_printf("No such agent '%s'",
2495 agent),
2496 .action_stdout = NULL,
2497 .action_stderr = NULL,
2498 };
2499
2500 callback(0, &result, user_data);
2501 pcmk__reset_result(&result);
2502 return ENOENT;
2503 }
2504 }
2505 }
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515 int
2516 stonith__exit_status(stonith_callback_data_t *data)
2517 {
2518 if ((data == NULL) || (data->opaque == NULL)) {
2519 return CRM_EX_ERROR;
2520 }
2521 return ((pcmk__action_result_t *) data->opaque)->exit_status;
2522 }
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532 int
2533 stonith__execution_status(stonith_callback_data_t *data)
2534 {
2535 if ((data == NULL) || (data->opaque == NULL)) {
2536 return PCMK_EXEC_UNKNOWN;
2537 }
2538 return ((pcmk__action_result_t *) data->opaque)->execution_status;
2539 }
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549 const char *
2550 stonith__exit_reason(stonith_callback_data_t *data)
2551 {
2552 if ((data == NULL) || (data->opaque == NULL)) {
2553 return NULL;
2554 }
2555 return ((pcmk__action_result_t *) data->opaque)->exit_reason;
2556 }
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566 int
2567 stonith__event_exit_status(stonith_event_t *event)
2568 {
2569 if ((event == NULL) || (event->opaque == NULL)) {
2570 return CRM_EX_ERROR;
2571 } else {
2572 struct event_private *event_private = event->opaque;
2573
2574 return event_private->result.exit_status;
2575 }
2576 }
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586 int
2587 stonith__event_execution_status(stonith_event_t *event)
2588 {
2589 if ((event == NULL) || (event->opaque == NULL)) {
2590 return PCMK_EXEC_UNKNOWN;
2591 } else {
2592 struct event_private *event_private = event->opaque;
2593
2594 return event_private->result.execution_status;
2595 }
2596 }
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606 const char *
2607 stonith__event_exit_reason(stonith_event_t *event)
2608 {
2609 if ((event == NULL) || (event->opaque == NULL)) {
2610 return NULL;
2611 } else {
2612 struct event_private *event_private = event->opaque;
2613
2614 return event_private->result.exit_reason;
2615 }
2616 }
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628 char *
2629 stonith__event_description(stonith_event_t *event)
2630 {
2631
2632 const char *origin = pcmk__s(event->client_origin, "a client");
2633 const char *origin_node = pcmk__s(event->origin, "a node");
2634 const char *executioner = pcmk__s(event->executioner, "the cluster");
2635 const char *device = pcmk__s(event->device, "unknown");
2636 const char *action = pcmk__s(event->action, event->operation);
2637 const char *target = pcmk__s(event->target, "no node");
2638 const char *reason = stonith__event_exit_reason(event);
2639 const char *status;
2640
2641 if (action == NULL) {
2642 action = "(unknown)";
2643 }
2644
2645 if (stonith__event_execution_status(event) != PCMK_EXEC_DONE) {
2646 status = pcmk_exec_status_str(stonith__event_execution_status(event));
2647 } else if (stonith__event_exit_status(event) != CRM_EX_OK) {
2648 status = pcmk_exec_status_str(PCMK_EXEC_ERROR);
2649 } else {
2650 status = crm_exit_str(CRM_EX_OK);
2651 }
2652
2653 if (pcmk__str_eq(event->operation, T_STONITH_NOTIFY_HISTORY,
2654 pcmk__str_none)) {
2655 return crm_strdup_printf("Fencing history may have changed");
2656
2657 } else if (pcmk__str_eq(event->operation, STONITH_OP_DEVICE_ADD,
2658 pcmk__str_none)) {
2659 return crm_strdup_printf("A fencing device (%s) was added", device);
2660
2661 } else if (pcmk__str_eq(event->operation, STONITH_OP_DEVICE_DEL,
2662 pcmk__str_none)) {
2663 return crm_strdup_printf("A fencing device (%s) was removed", device);
2664
2665 } else if (pcmk__str_eq(event->operation, STONITH_OP_LEVEL_ADD,
2666 pcmk__str_none)) {
2667 return crm_strdup_printf("A fencing topology level (%s) was added",
2668 device);
2669
2670 } else if (pcmk__str_eq(event->operation, STONITH_OP_LEVEL_DEL,
2671 pcmk__str_none)) {
2672 return crm_strdup_printf("A fencing topology level (%s) was removed",
2673 device);
2674 }
2675
2676
2677
2678 return crm_strdup_printf("Operation %s of %s by %s for %s@%s: %s%s%s%s (ref=%s)",
2679 action, target, executioner, origin, origin_node,
2680 status,
2681 ((reason == NULL)? "" : " ("), pcmk__s(reason, ""),
2682 ((reason == NULL)? "" : ")"),
2683 pcmk__s(event->id, "(none)"));
2684 }
2685
2686
2687
2688
2689
2690 const char *get_stonith_provider(const char *agent, const char *provider);
2691
2692 const char *
2693 get_stonith_provider(const char *agent, const char *provider)
2694 {
2695 return stonith_namespace2text(stonith_get_namespace(agent, provider));
2696 }
2697
2698
2699
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