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/common/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 = pcmk__xe_create(NULL, PCMK__XE_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, PCMK__XA_T, PCMK__VALUE_ST_NOTIFY);
286 crm_xml_add(blob.xml, PCMK__XA_SUBT, PCMK__VALUE_ST_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 = pcmk__xe_create(NULL, PCMK__XE_ST_DEVICE_ID);
299 xmlNode *args = pcmk__xe_create(data, PCMK__XE_ATTRIBUTES);
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, PCMK_XA_ID, id);
312 crm_xml_add(data, PCMK__XA_ST_ORIGIN, __func__);
313 crm_xml_add(data, PCMK_XA_AGENT, agent);
314 if ((namespace != st_namespace_any) && (namespace != st_namespace_invalid)) {
315 crm_xml_add(data, PCMK__XA_NAMESPACE,
316 stonith_namespace2text(namespace));
317 }
318 if (rsc_provides) {
319 crm_xml_add(data, PCMK__XA_RSC_PROVIDES, rsc_provides);
320 }
321
322 for (; params; params = params->next) {
323 hash2field((gpointer) params->key, (gpointer) params->value, args);
324 }
325
326 return data;
327 }
328
329 static int
330 stonith_api_register_device(stonith_t *st, int call_options,
331 const char *id, const char *namespace_s,
332 const char *agent,
333 const stonith_key_value_t *params)
334 {
335 int rc = 0;
336 xmlNode *data = NULL;
337
338 data = create_device_registration_xml(id,
339 stonith_text2namespace(namespace_s),
340 agent, params, NULL);
341
342 rc = stonith_send_command(st, STONITH_OP_DEVICE_ADD, data, NULL, call_options, 0);
343 free_xml(data);
344
345 return rc;
346 }
347
348 static int
349 stonith_api_remove_device(stonith_t * st, int call_options, const char *name)
350 {
351 int rc = 0;
352 xmlNode *data = NULL;
353
354 data = pcmk__xe_create(NULL, PCMK__XE_ST_DEVICE_ID);
355 crm_xml_add(data, PCMK__XA_ST_ORIGIN, __func__);
356 crm_xml_add(data, PCMK_XA_ID, name);
357 rc = stonith_send_command(st, STONITH_OP_DEVICE_DEL, data, NULL, call_options, 0);
358 free_xml(data);
359
360 return rc;
361 }
362
363 static int
364 stonith_api_remove_level_full(stonith_t *st, int options,
365 const char *node, const char *pattern,
366 const char *attr, const char *value, int level)
367 {
368 int rc = 0;
369 xmlNode *data = NULL;
370
371 CRM_CHECK(node || pattern || (attr && value), return -EINVAL);
372
373 data = pcmk__xe_create(NULL, PCMK_XE_FENCING_LEVEL);
374 crm_xml_add(data, PCMK__XA_ST_ORIGIN, __func__);
375
376 if (node) {
377 crm_xml_add(data, PCMK_XA_TARGET, node);
378
379 } else if (pattern) {
380 crm_xml_add(data, PCMK_XA_TARGET_PATTERN, pattern);
381
382 } else {
383 crm_xml_add(data, PCMK_XA_TARGET_ATTRIBUTE, attr);
384 crm_xml_add(data, PCMK_XA_TARGET_VALUE, value);
385 }
386
387 crm_xml_add_int(data, PCMK_XA_INDEX, level);
388 rc = stonith_send_command(st, STONITH_OP_LEVEL_DEL, data, NULL, options, 0);
389 free_xml(data);
390
391 return rc;
392 }
393
394 static int
395 stonith_api_remove_level(stonith_t * st, int options, const char *node, int level)
396 {
397 return stonith_api_remove_level_full(st, options, node,
398 NULL, NULL, NULL, level);
399 }
400
401
402
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404
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408
409
410
411
412
413
414
415
416 xmlNode *
417 create_level_registration_xml(const char *node, const char *pattern,
418 const char *attr, const char *value,
419 int level, const stonith_key_value_t *device_list)
420 {
421 GString *list = NULL;
422 xmlNode *data;
423
424 CRM_CHECK(node || pattern || (attr && value), return NULL);
425
426 data = pcmk__xe_create(NULL, PCMK_XE_FENCING_LEVEL);
427
428 crm_xml_add(data, PCMK__XA_ST_ORIGIN, __func__);
429 crm_xml_add_int(data, PCMK_XA_ID, level);
430 crm_xml_add_int(data, PCMK_XA_INDEX, level);
431
432 if (node) {
433 crm_xml_add(data, PCMK_XA_TARGET, node);
434
435 } else if (pattern) {
436 crm_xml_add(data, PCMK_XA_TARGET_PATTERN, pattern);
437
438 } else {
439 crm_xml_add(data, PCMK_XA_TARGET_ATTRIBUTE, attr);
440 crm_xml_add(data, PCMK_XA_TARGET_VALUE, value);
441 }
442
443 for (; device_list; device_list = device_list->next) {
444 pcmk__add_separated_word(&list, 1024, device_list->value, ",");
445 }
446
447 if (list != NULL) {
448 crm_xml_add(data, PCMK_XA_DEVICES, (const char *) list->str);
449 g_string_free(list, TRUE);
450 }
451 return data;
452 }
453
454 static int
455 stonith_api_register_level_full(stonith_t *st, int options, const char *node,
456 const char *pattern, const char *attr,
457 const char *value, int level,
458 const stonith_key_value_t *device_list)
459 {
460 int rc = 0;
461 xmlNode *data = create_level_registration_xml(node, pattern, attr, value,
462 level, device_list);
463 CRM_CHECK(data != NULL, return -EINVAL);
464
465 rc = stonith_send_command(st, STONITH_OP_LEVEL_ADD, data, NULL, options, 0);
466 free_xml(data);
467
468 return rc;
469 }
470
471 static int
472 stonith_api_register_level(stonith_t * st, int options, const char *node, int level,
473 const stonith_key_value_t * device_list)
474 {
475 return stonith_api_register_level_full(st, options, node, NULL, NULL, NULL,
476 level, device_list);
477 }
478
479 static int
480 stonith_api_device_list(stonith_t *stonith, int call_options,
481 const char *namespace_s, stonith_key_value_t **devices,
482 int timeout)
483 {
484 int count = 0;
485 enum stonith_namespace ns = stonith_text2namespace(namespace_s);
486
487 if (devices == NULL) {
488 crm_err("Parameter error: stonith_api_device_list");
489 return -EFAULT;
490 }
491
492 #if HAVE_STONITH_STONITH_H
493
494 if ((ns == st_namespace_any) || (ns == st_namespace_lha)) {
495 count += stonith__list_lha_agents(devices);
496 }
497 #endif
498
499
500 if ((ns == st_namespace_any) || (ns == st_namespace_rhcs)) {
501 count += stonith__list_rhcs_agents(devices);
502 }
503
504 return count;
505 }
506
507
508 static int
509 stonith_api_device_metadata(stonith_t *stonith, int call_options,
510 const char *agent, const char *namespace_s,
511 char **output, int timeout_sec)
512 {
513
514
515
516
517 enum stonith_namespace ns = stonith_get_namespace(agent, namespace_s);
518
519 if (timeout_sec <= 0) {
520 timeout_sec = PCMK_DEFAULT_METADATA_TIMEOUT_MS;
521 }
522
523 crm_trace("Looking up metadata for %s agent %s",
524 stonith_namespace2text(ns), agent);
525
526 switch (ns) {
527 case st_namespace_rhcs:
528 return stonith__rhcs_metadata(agent, timeout_sec, output);
529
530 #if HAVE_STONITH_STONITH_H
531 case st_namespace_lha:
532 return stonith__lha_metadata(agent, timeout_sec, output);
533 #endif
534
535 default:
536 crm_err("Can't get fence agent '%s' meta-data: No such agent",
537 agent);
538 break;
539 }
540 return -ENODEV;
541 }
542
543 static int
544 stonith_api_query(stonith_t * stonith, int call_options, const char *target,
545 stonith_key_value_t ** devices, int timeout)
546 {
547 int rc = 0, lpc = 0, max = 0;
548
549 xmlNode *data = NULL;
550 xmlNode *output = NULL;
551 xmlXPathObjectPtr xpathObj = NULL;
552
553 CRM_CHECK(devices != NULL, return -EINVAL);
554
555 data = pcmk__xe_create(NULL, PCMK__XE_ST_DEVICE_ID);
556 crm_xml_add(data, PCMK__XA_ST_ORIGIN, __func__);
557 crm_xml_add(data, PCMK__XA_ST_TARGET, target);
558 crm_xml_add(data, PCMK__XA_ST_DEVICE_ACTION, PCMK_ACTION_OFF);
559 rc = stonith_send_command(stonith, STONITH_OP_QUERY, data, &output, call_options, timeout);
560
561 if (rc < 0) {
562 return rc;
563 }
564
565 xpathObj = xpath_search(output, "//@agent");
566 if (xpathObj) {
567 max = numXpathResults(xpathObj);
568
569 for (lpc = 0; lpc < max; lpc++) {
570 xmlNode *match = getXpathResult(xpathObj, lpc);
571
572 CRM_LOG_ASSERT(match != NULL);
573 if(match != NULL) {
574 xmlChar *match_path = xmlGetNodePath(match);
575
576 crm_info("%s[%d] = %s", "//@agent", lpc, match_path);
577 free(match_path);
578 *devices = stonith_key_value_add(*devices, NULL,
579 crm_element_value(match,
580 PCMK_XA_ID));
581 }
582 }
583
584 freeXpathObject(xpathObj);
585 }
586
587 free_xml(output);
588 free_xml(data);
589 return max;
590 }
591
592
593
594
595
596
597
598
599
600
601
602
603
604 static int
605 stonith_api_call(stonith_t *stonith, int call_options, const char *id,
606 const char *action, const char *target, int timeout_sec,
607 xmlNode **output)
608 {
609 int rc = 0;
610 xmlNode *data = NULL;
611
612 data = pcmk__xe_create(NULL, PCMK__XE_ST_DEVICE_ID);
613 crm_xml_add(data, PCMK__XA_ST_ORIGIN, __func__);
614 crm_xml_add(data, PCMK__XA_ST_DEVICE_ID, id);
615 crm_xml_add(data, PCMK__XA_ST_DEVICE_ACTION, action);
616 crm_xml_add(data, PCMK__XA_ST_TARGET, target);
617
618 rc = stonith_send_command(stonith, STONITH_OP_EXEC, data, output,
619 call_options, timeout_sec);
620 free_xml(data);
621
622 return rc;
623 }
624
625 static int
626 stonith_api_list(stonith_t * stonith, int call_options, const char *id, char **list_info,
627 int timeout)
628 {
629 int rc;
630 xmlNode *output = NULL;
631
632 rc = stonith_api_call(stonith, call_options, id, PCMK_ACTION_LIST, NULL,
633 timeout, &output);
634
635 if (output && list_info) {
636 const char *list_str;
637
638 list_str = crm_element_value(output, PCMK__XA_ST_OUTPUT);
639
640 if (list_str) {
641 *list_info = strdup(list_str);
642 }
643 }
644
645 if (output) {
646 free_xml(output);
647 }
648
649 return rc;
650 }
651
652 static int
653 stonith_api_monitor(stonith_t * stonith, int call_options, const char *id, int timeout)
654 {
655 return stonith_api_call(stonith, call_options, id, PCMK_ACTION_MONITOR,
656 NULL, timeout, NULL);
657 }
658
659 static int
660 stonith_api_status(stonith_t * stonith, int call_options, const char *id, const char *port,
661 int timeout)
662 {
663 return stonith_api_call(stonith, call_options, id, PCMK_ACTION_STATUS, port,
664 timeout, NULL);
665 }
666
667 static int
668 stonith_api_fence_with_delay(stonith_t * stonith, int call_options, const char *node,
669 const char *action, int timeout, int tolerance, int delay)
670 {
671 int rc = 0;
672 xmlNode *data = NULL;
673
674 data = pcmk__xe_create(NULL, __func__);
675 crm_xml_add(data, PCMK__XA_ST_TARGET, node);
676 crm_xml_add(data, PCMK__XA_ST_DEVICE_ACTION, action);
677 crm_xml_add_int(data, PCMK__XA_ST_TIMEOUT, timeout);
678 crm_xml_add_int(data, PCMK__XA_ST_TOLERANCE, tolerance);
679 crm_xml_add_int(data, PCMK__XA_ST_DELAY, delay);
680
681 rc = stonith_send_command(stonith, STONITH_OP_FENCE, data, NULL, call_options, timeout);
682 free_xml(data);
683
684 return rc;
685 }
686
687 static int
688 stonith_api_fence(stonith_t * stonith, int call_options, const char *node, const char *action,
689 int timeout, int tolerance)
690 {
691 return stonith_api_fence_with_delay(stonith, call_options, node, action,
692 timeout, tolerance, 0);
693 }
694
695 static int
696 stonith_api_confirm(stonith_t * stonith, int call_options, const char *target)
697 {
698 stonith__set_call_options(call_options, target, st_opt_manual_ack);
699 return stonith_api_fence(stonith, call_options, target, PCMK_ACTION_OFF, 0,
700 0);
701 }
702
703 static int
704 stonith_api_history(stonith_t * stonith, int call_options, const char *node,
705 stonith_history_t ** history, int timeout)
706 {
707 int rc = 0;
708 xmlNode *data = NULL;
709 xmlNode *output = NULL;
710 stonith_history_t *last = NULL;
711
712 *history = NULL;
713
714 if (node) {
715 data = pcmk__xe_create(NULL, __func__);
716 crm_xml_add(data, PCMK__XA_ST_TARGET, node);
717 }
718
719 stonith__set_call_options(call_options, node, st_opt_sync_call);
720 rc = stonith_send_command(stonith, STONITH_OP_FENCE_HISTORY, data, &output,
721 call_options, timeout);
722 free_xml(data);
723
724 if (rc == 0) {
725 xmlNode *op = NULL;
726 xmlNode *reply = get_xpath_object("//" PCMK__XE_ST_HISTORY, output,
727 LOG_NEVER);
728
729 for (op = pcmk__xe_first_child(reply, NULL, NULL, NULL); op != NULL;
730 op = pcmk__xe_next(op)) {
731 stonith_history_t *kvp;
732 long long completed;
733 long long completed_nsec = 0L;
734
735 kvp = pcmk__assert_alloc(1, sizeof(stonith_history_t));
736 kvp->target = crm_element_value_copy(op, PCMK__XA_ST_TARGET);
737 kvp->action = crm_element_value_copy(op, PCMK__XA_ST_DEVICE_ACTION);
738 kvp->origin = crm_element_value_copy(op, PCMK__XA_ST_ORIGIN);
739 kvp->delegate = crm_element_value_copy(op, PCMK__XA_ST_DELEGATE);
740 kvp->client = crm_element_value_copy(op, PCMK__XA_ST_CLIENTNAME);
741 crm_element_value_ll(op, PCMK__XA_ST_DATE, &completed);
742 kvp->completed = (time_t) completed;
743 crm_element_value_ll(op, PCMK__XA_ST_DATE_NSEC, &completed_nsec);
744 kvp->completed_nsec = completed_nsec;
745 crm_element_value_int(op, PCMK__XA_ST_STATE, &kvp->state);
746 kvp->exit_reason = crm_element_value_copy(op, PCMK_XA_EXIT_REASON);
747
748 if (last) {
749 last->next = kvp;
750 } else {
751 *history = kvp;
752 }
753 last = kvp;
754 }
755 }
756
757 free_xml(output);
758
759 return rc;
760 }
761
762 void stonith_history_free(stonith_history_t *history)
763 {
764 stonith_history_t *hp, *hp_old;
765
766 for (hp = history; hp; hp_old = hp, hp = hp->next, free(hp_old)) {
767 free(hp->target);
768 free(hp->action);
769 free(hp->origin);
770 free(hp->delegate);
771 free(hp->client);
772 free(hp->exit_reason);
773 }
774 }
775
776 static gint
777 stonithlib_GCompareFunc(gconstpointer a, gconstpointer b)
778 {
779 int rc = 0;
780 const stonith_notify_client_t *a_client = a;
781 const stonith_notify_client_t *b_client = b;
782
783 if (a_client->delete || b_client->delete) {
784
785 return -1;
786 }
787 CRM_CHECK(a_client->event != NULL && b_client->event != NULL, return 0);
788 rc = strcmp(a_client->event, b_client->event);
789 if (rc == 0) {
790 if (a_client->notify == NULL || b_client->notify == NULL) {
791 return 0;
792
793 } else if (a_client->notify == b_client->notify) {
794 return 0;
795
796 } else if (((long)a_client->notify) < ((long)b_client->notify)) {
797 crm_err("callbacks for %s are not equal: %p vs. %p",
798 a_client->event, a_client->notify, b_client->notify);
799 return -1;
800 }
801 crm_err("callbacks for %s are not equal: %p vs. %p",
802 a_client->event, a_client->notify, b_client->notify);
803 return 1;
804 }
805 return rc;
806 }
807
808 xmlNode *
809 stonith_create_op(int call_id, const char *token, const char *op, xmlNode * data, int call_options)
810 {
811 xmlNode *op_msg = NULL;
812
813 CRM_CHECK(token != NULL, return NULL);
814
815 op_msg = pcmk__xe_create(NULL, PCMK__XE_STONITH_COMMAND);
816 crm_xml_add(op_msg, PCMK__XA_T, PCMK__VALUE_STONITH_NG);
817 crm_xml_add(op_msg, PCMK__XA_ST_OP, op);
818 crm_xml_add_int(op_msg, PCMK__XA_ST_CALLID, call_id);
819 crm_trace("Sending call options: %.8lx, %d", (long)call_options, call_options);
820 crm_xml_add_int(op_msg, PCMK__XA_ST_CALLOPT, call_options);
821
822 if (data != NULL) {
823 xmlNode *wrapper = pcmk__xe_create(op_msg, PCMK__XE_ST_CALLDATA);
824
825 pcmk__xml_copy(wrapper, data);
826 }
827
828 return op_msg;
829 }
830
831 static void
832 stonith_destroy_op_callback(gpointer data)
833 {
834 stonith_callback_client_t *blob = data;
835
836 if (blob->timer && blob->timer->ref > 0) {
837 g_source_remove(blob->timer->ref);
838 }
839 free(blob->timer);
840 free(blob);
841 }
842
843 static int
844 stonith_api_signoff(stonith_t * stonith)
845 {
846 stonith_private_t *native = stonith->st_private;
847
848 crm_debug("Disconnecting from the fencer");
849
850 if (native->source != NULL) {
851
852 mainloop_del_ipc_client(native->source);
853 native->source = NULL;
854 native->ipc = NULL;
855
856 } else if (native->ipc) {
857
858 crm_ipc_t *ipc = native->ipc;
859
860 native->ipc = NULL;
861 crm_ipc_close(ipc);
862 crm_ipc_destroy(ipc);
863 }
864
865 free(native->token); native->token = NULL;
866 stonith->state = stonith_disconnected;
867 return pcmk_ok;
868 }
869
870 static int
871 stonith_api_del_callback(stonith_t * stonith, int call_id, bool all_callbacks)
872 {
873 stonith_private_t *private = stonith->st_private;
874
875 if (all_callbacks) {
876 private->op_callback = NULL;
877 g_hash_table_destroy(private->stonith_op_callback_table);
878 private->stonith_op_callback_table = pcmk__intkey_table(stonith_destroy_op_callback);
879
880 } else if (call_id == 0) {
881 private->op_callback = NULL;
882
883 } else {
884 pcmk__intkey_table_remove(private->stonith_op_callback_table, call_id);
885 }
886 return pcmk_ok;
887 }
888
889
890
891
892
893
894
895
896
897
898
899
900 static void
901 invoke_fence_action_callback(stonith_t *st, int call_id,
902 pcmk__action_result_t *result,
903 void *userdata,
904 void (*callback) (stonith_t *st,
905 stonith_callback_data_t *data))
906 {
907 stonith_callback_data_t data = { 0, };
908
909 data.call_id = call_id;
910 data.rc = pcmk_rc2legacy(stonith__result2rc(result));
911 data.userdata = userdata;
912 data.opaque = (void *) result;
913
914 callback(st, &data);
915 }
916
917
918
919
920
921
922
923
924
925
926
927
928 static void
929 invoke_registered_callbacks(stonith_t *stonith, const xmlNode *msg, int call_id)
930 {
931 stonith_private_t *private = NULL;
932 stonith_callback_client_t *cb_info = NULL;
933 pcmk__action_result_t result = PCMK__UNKNOWN_RESULT;
934
935 CRM_CHECK(stonith != NULL, return);
936 CRM_CHECK(stonith->st_private != NULL, return);
937
938 private = stonith->st_private;
939
940 if (msg == NULL) {
941
942 pcmk__set_result(&result, CRM_EX_ERROR, PCMK_EXEC_TIMEOUT,
943 "Fencer accepted request but did not reply in time");
944 CRM_LOG_ASSERT(call_id > 0);
945
946 } else {
947
948 if ((crm_element_value_int(msg, PCMK__XA_ST_CALLID, &call_id) != 0)
949 || (call_id <= 0)) {
950 crm_log_xml_warn(msg, "Bad fencer reply");
951 }
952 stonith__xe_get_result(msg, &result);
953 }
954
955 if (call_id > 0) {
956 cb_info = pcmk__intkey_table_lookup(private->stonith_op_callback_table,
957 call_id);
958 }
959
960 if ((cb_info != NULL) && (cb_info->callback != NULL)
961 && (pcmk__result_ok(&result) || !(cb_info->only_success))) {
962 crm_trace("Invoking callback %s for call %d",
963 pcmk__s(cb_info->id, "without ID"), call_id);
964 invoke_fence_action_callback(stonith, call_id, &result,
965 cb_info->user_data, cb_info->callback);
966
967 } else if ((private->op_callback == NULL) && !pcmk__result_ok(&result)) {
968 crm_warn("Fencing action without registered callback failed: %d (%s%s%s)",
969 result.exit_status,
970 pcmk_exec_status_str(result.execution_status),
971 ((result.exit_reason == NULL)? "" : ": "),
972 ((result.exit_reason == NULL)? "" : result.exit_reason));
973 crm_log_xml_debug(msg, "Failed fence update");
974 }
975
976 if (private->op_callback != NULL) {
977 crm_trace("Invoking global callback for call %d", call_id);
978 invoke_fence_action_callback(stonith, call_id, &result, NULL,
979 private->op_callback);
980 }
981
982 if (cb_info != NULL) {
983 stonith_api_del_callback(stonith, call_id, FALSE);
984 }
985 pcmk__reset_result(&result);
986 }
987
988 static gboolean
989 stonith_async_timeout_handler(gpointer data)
990 {
991 struct timer_rec_s *timer = data;
992
993 crm_err("Async call %d timed out after %dms", timer->call_id, timer->timeout);
994 invoke_registered_callbacks(timer->stonith, NULL, timer->call_id);
995
996
997
998
999 return TRUE;
1000 }
1001
1002 static void
1003 set_callback_timeout(stonith_callback_client_t * callback, stonith_t * stonith, int call_id,
1004 int timeout)
1005 {
1006 struct timer_rec_s *async_timer = callback->timer;
1007
1008 if (timeout <= 0) {
1009 return;
1010 }
1011
1012 if (!async_timer) {
1013 async_timer = pcmk__assert_alloc(1, sizeof(struct timer_rec_s));
1014 callback->timer = async_timer;
1015 }
1016
1017 async_timer->stonith = stonith;
1018 async_timer->call_id = call_id;
1019
1020
1021
1022 async_timer->timeout = (timeout + 60) * 1000;
1023 if (async_timer->ref) {
1024 g_source_remove(async_timer->ref);
1025 }
1026 async_timer->ref =
1027 g_timeout_add(async_timer->timeout, stonith_async_timeout_handler, async_timer);
1028 }
1029
1030 static void
1031 update_callback_timeout(int call_id, int timeout, stonith_t * st)
1032 {
1033 stonith_callback_client_t *callback = NULL;
1034 stonith_private_t *private = st->st_private;
1035
1036 callback = pcmk__intkey_table_lookup(private->stonith_op_callback_table,
1037 call_id);
1038 if (!callback || !callback->allow_timeout_updates) {
1039 return;
1040 }
1041
1042 set_callback_timeout(callback, st, call_id, timeout);
1043 }
1044
1045 static int
1046 stonith_dispatch_internal(const char *buffer, ssize_t length, gpointer userdata)
1047 {
1048 const char *type = NULL;
1049 struct notify_blob_s blob;
1050
1051 stonith_t *st = userdata;
1052 stonith_private_t *private = NULL;
1053
1054 CRM_ASSERT(st != NULL);
1055 private = st->st_private;
1056
1057 blob.stonith = st;
1058 blob.xml = pcmk__xml_parse(buffer);
1059 if (blob.xml == NULL) {
1060 crm_warn("Received malformed message from fencer: %s", buffer);
1061 return 0;
1062 }
1063
1064
1065 type = crm_element_value(blob.xml, PCMK__XA_T);
1066 crm_trace("Activating %s callbacks...", type);
1067
1068 if (pcmk__str_eq(type, PCMK__VALUE_STONITH_NG, pcmk__str_none)) {
1069 invoke_registered_callbacks(st, blob.xml, 0);
1070
1071 } else if (pcmk__str_eq(type, PCMK__VALUE_ST_NOTIFY, pcmk__str_none)) {
1072 foreach_notify_entry(private, stonith_send_notification, &blob);
1073
1074 } else if (pcmk__str_eq(type, PCMK__VALUE_ST_ASYNC_TIMEOUT_VALUE,
1075 pcmk__str_none)) {
1076 int call_id = 0;
1077 int timeout = 0;
1078
1079 crm_element_value_int(blob.xml, PCMK__XA_ST_TIMEOUT, &timeout);
1080 crm_element_value_int(blob.xml, PCMK__XA_ST_CALLID, &call_id);
1081
1082 update_callback_timeout(call_id, timeout, st);
1083 } else {
1084 crm_err("Unknown message type: %s", type);
1085 crm_log_xml_warn(blob.xml, "BadReply");
1086 }
1087
1088 free_xml(blob.xml);
1089 return 1;
1090 }
1091
1092 static int
1093 stonith_api_signon(stonith_t * stonith, const char *name, int *stonith_fd)
1094 {
1095 int rc = pcmk_ok;
1096 stonith_private_t *native = NULL;
1097 const char *display_name = name? name : "client";
1098
1099 struct ipc_client_callbacks st_callbacks = {
1100 .dispatch = stonith_dispatch_internal,
1101 .destroy = stonith_connection_destroy
1102 };
1103
1104 CRM_CHECK(stonith != NULL, return -EINVAL);
1105
1106 native = stonith->st_private;
1107 CRM_ASSERT(native != NULL);
1108
1109 crm_debug("Attempting fencer connection by %s with%s mainloop",
1110 display_name, (stonith_fd? "out" : ""));
1111
1112 stonith->state = stonith_connected_command;
1113 if (stonith_fd) {
1114
1115 native->ipc = crm_ipc_new("stonith-ng", 0);
1116 if (native->ipc != NULL) {
1117 rc = pcmk__connect_generic_ipc(native->ipc);
1118 if (rc == pcmk_rc_ok) {
1119 rc = pcmk__ipc_fd(native->ipc, stonith_fd);
1120 if (rc != pcmk_rc_ok) {
1121 crm_debug("Couldn't get file descriptor for IPC: %s",
1122 pcmk_rc_str(rc));
1123 }
1124 }
1125 if (rc != pcmk_rc_ok) {
1126 crm_ipc_close(native->ipc);
1127 crm_ipc_destroy(native->ipc);
1128 native->ipc = NULL;
1129 }
1130 }
1131
1132 } else {
1133
1134 native->source =
1135 mainloop_add_ipc_client("stonith-ng", G_PRIORITY_MEDIUM, 0, stonith, &st_callbacks);
1136 native->ipc = mainloop_get_ipc_client(native->source);
1137 }
1138
1139 if (native->ipc == NULL) {
1140 rc = -ENOTCONN;
1141 } else {
1142 xmlNode *reply = NULL;
1143 xmlNode *hello = pcmk__xe_create(NULL, PCMK__XE_STONITH_COMMAND);
1144
1145 crm_xml_add(hello, PCMK__XA_T, PCMK__VALUE_STONITH_NG);
1146 crm_xml_add(hello, PCMK__XA_ST_OP, CRM_OP_REGISTER);
1147 crm_xml_add(hello, PCMK__XA_ST_CLIENTNAME, name);
1148 rc = crm_ipc_send(native->ipc, hello, crm_ipc_client_response, -1, &reply);
1149
1150 if (rc < 0) {
1151 crm_debug("Couldn't register with the fencer: %s "
1152 CRM_XS " rc=%d", pcmk_strerror(rc), rc);
1153 rc = -ECOMM;
1154
1155 } else if (reply == NULL) {
1156 crm_debug("Couldn't register with the fencer: no reply");
1157 rc = -EPROTO;
1158
1159 } else {
1160 const char *msg_type = crm_element_value(reply, PCMK__XA_ST_OP);
1161
1162 native->token = crm_element_value_copy(reply, PCMK__XA_ST_CLIENTID);
1163 if (!pcmk__str_eq(msg_type, CRM_OP_REGISTER, pcmk__str_none)) {
1164 crm_debug("Couldn't register with the fencer: invalid reply type '%s'",
1165 (msg_type? msg_type : "(missing)"));
1166 crm_log_xml_debug(reply, "Invalid fencer reply");
1167 rc = -EPROTO;
1168
1169 } else if (native->token == NULL) {
1170 crm_debug("Couldn't register with the fencer: no token in reply");
1171 crm_log_xml_debug(reply, "Invalid fencer reply");
1172 rc = -EPROTO;
1173
1174 } else {
1175 crm_debug("Connection to fencer by %s succeeded (registration token: %s)",
1176 display_name, native->token);
1177 rc = pcmk_ok;
1178 }
1179 }
1180
1181 free_xml(reply);
1182 free_xml(hello);
1183 }
1184
1185 if (rc != pcmk_ok) {
1186 crm_debug("Connection attempt to fencer by %s failed: %s "
1187 CRM_XS " rc=%d", display_name, pcmk_strerror(rc), rc);
1188 stonith->cmds->disconnect(stonith);
1189 }
1190 return rc;
1191 }
1192
1193 static int
1194 stonith_set_notification(stonith_t * stonith, const char *callback, int enabled)
1195 {
1196 int rc = pcmk_ok;
1197 xmlNode *notify_msg = pcmk__xe_create(NULL, __func__);
1198 stonith_private_t *native = stonith->st_private;
1199
1200 if (stonith->state != stonith_disconnected) {
1201
1202 crm_xml_add(notify_msg, PCMK__XA_ST_OP, STONITH_OP_NOTIFY);
1203 if (enabled) {
1204 crm_xml_add(notify_msg, PCMK__XA_ST_NOTIFY_ACTIVATE, callback);
1205 } else {
1206 crm_xml_add(notify_msg, PCMK__XA_ST_NOTIFY_DEACTIVATE, callback);
1207 }
1208
1209 rc = crm_ipc_send(native->ipc, notify_msg, crm_ipc_client_response, -1, NULL);
1210 if (rc < 0) {
1211 crm_perror(LOG_DEBUG, "Couldn't register for fencing notifications: %d", rc);
1212 rc = -ECOMM;
1213 } else {
1214 rc = pcmk_ok;
1215 }
1216 }
1217
1218 free_xml(notify_msg);
1219 return rc;
1220 }
1221
1222 static int
1223 stonith_api_add_notification(stonith_t * stonith, const char *event,
1224 void (*callback) (stonith_t * stonith, stonith_event_t * e))
1225 {
1226 GList *list_item = NULL;
1227 stonith_notify_client_t *new_client = NULL;
1228 stonith_private_t *private = NULL;
1229
1230 private = stonith->st_private;
1231 crm_trace("Adding callback for %s events (%d)", event, g_list_length(private->notify_list));
1232
1233 new_client = pcmk__assert_alloc(1, sizeof(stonith_notify_client_t));
1234 new_client->event = event;
1235 new_client->notify = callback;
1236
1237 list_item = g_list_find_custom(private->notify_list, new_client, stonithlib_GCompareFunc);
1238
1239 if (list_item != NULL) {
1240 crm_warn("Callback already present");
1241 free(new_client);
1242 return -ENOTUNIQ;
1243
1244 } else {
1245 private->notify_list = g_list_append(private->notify_list, new_client);
1246
1247 stonith_set_notification(stonith, event, 1);
1248
1249 crm_trace("Callback added (%d)", g_list_length(private->notify_list));
1250 }
1251 return pcmk_ok;
1252 }
1253
1254 static void
1255 del_notify_entry(gpointer data, gpointer user_data)
1256 {
1257 stonith_notify_client_t *entry = data;
1258 stonith_t * stonith = user_data;
1259
1260 if (!entry->delete) {
1261 crm_debug("Removing callback for %s events", entry->event);
1262 stonith_api_del_notification(stonith, entry->event);
1263 }
1264 }
1265
1266 static int
1267 stonith_api_del_notification(stonith_t * stonith, const char *event)
1268 {
1269 GList *list_item = NULL;
1270 stonith_notify_client_t *new_client = NULL;
1271 stonith_private_t *private = stonith->st_private;
1272
1273 if (event == NULL) {
1274 foreach_notify_entry(private, del_notify_entry, stonith);
1275 crm_trace("Removed callback");
1276
1277 return pcmk_ok;
1278 }
1279
1280 crm_debug("Removing callback for %s events", event);
1281
1282 new_client = pcmk__assert_alloc(1, sizeof(stonith_notify_client_t));
1283 new_client->event = event;
1284 new_client->notify = NULL;
1285
1286 list_item = g_list_find_custom(private->notify_list, new_client, stonithlib_GCompareFunc);
1287
1288 stonith_set_notification(stonith, event, 0);
1289
1290 if (list_item != NULL) {
1291 stonith_notify_client_t *list_client = list_item->data;
1292
1293 if (private->notify_refcnt) {
1294 list_client->delete = TRUE;
1295 private->notify_deletes = TRUE;
1296 } else {
1297 private->notify_list = g_list_remove(private->notify_list, list_client);
1298 free(list_client);
1299 }
1300
1301 crm_trace("Removed callback");
1302
1303 } else {
1304 crm_trace("Callback not present");
1305 }
1306 free(new_client);
1307 return pcmk_ok;
1308 }
1309
1310 static int
1311 stonith_api_add_callback(stonith_t * stonith, int call_id, int timeout, int options,
1312 void *user_data, const char *callback_name,
1313 void (*callback) (stonith_t * st, stonith_callback_data_t * data))
1314 {
1315 stonith_callback_client_t *blob = NULL;
1316 stonith_private_t *private = NULL;
1317
1318 CRM_CHECK(stonith != NULL, return -EINVAL);
1319 CRM_CHECK(stonith->st_private != NULL, return -EINVAL);
1320 private = stonith->st_private;
1321
1322 if (call_id == 0) {
1323 private->op_callback = callback;
1324
1325 } else if (call_id < 0) {
1326 if (!(options & st_opt_report_only_success)) {
1327 pcmk__action_result_t result = PCMK__UNKNOWN_RESULT;
1328
1329 crm_trace("Call failed, calling %s: %s", callback_name, pcmk_strerror(call_id));
1330 pcmk__set_result(&result, CRM_EX_ERROR,
1331 stonith__legacy2status(call_id), NULL);
1332 invoke_fence_action_callback(stonith, call_id, &result,
1333 user_data, callback);
1334 } else {
1335 crm_warn("Fencer call failed: %s", pcmk_strerror(call_id));
1336 }
1337 return FALSE;
1338 }
1339
1340 blob = pcmk__assert_alloc(1, sizeof(stonith_callback_client_t));
1341 blob->id = callback_name;
1342 blob->only_success = (options & st_opt_report_only_success) ? TRUE : FALSE;
1343 blob->user_data = user_data;
1344 blob->callback = callback;
1345 blob->allow_timeout_updates = (options & st_opt_timeout_updates) ? TRUE : FALSE;
1346
1347 if (timeout > 0) {
1348 set_callback_timeout(blob, stonith, call_id, timeout);
1349 }
1350
1351 pcmk__intkey_table_insert(private->stonith_op_callback_table, call_id,
1352 blob);
1353 crm_trace("Added callback to %s for call %d", callback_name, call_id);
1354
1355 return TRUE;
1356 }
1357
1358 static void
1359 stonith_dump_pending_op(gpointer key, gpointer value, gpointer user_data)
1360 {
1361 int call = GPOINTER_TO_INT(key);
1362 stonith_callback_client_t *blob = value;
1363
1364 crm_debug("Call %d (%s): pending", call, pcmk__s(blob->id, "no ID"));
1365 }
1366
1367 void
1368 stonith_dump_pending_callbacks(stonith_t * stonith)
1369 {
1370 stonith_private_t *private = stonith->st_private;
1371
1372 if (private->stonith_op_callback_table == NULL) {
1373 return;
1374 }
1375 return g_hash_table_foreach(private->stonith_op_callback_table, stonith_dump_pending_op, NULL);
1376 }
1377
1378
1379
1380
1381
1382
1383
1384
1385 static xmlNode *
1386 get_event_data_xml(xmlNode *msg, const char *ntype)
1387 {
1388 char *data_addr = crm_strdup_printf("//%s", ntype);
1389 xmlNode *data = get_xpath_object(data_addr, msg, LOG_DEBUG);
1390
1391 free(data_addr);
1392 return data;
1393 }
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414 static stonith_event_t *
1415 xml_to_event(xmlNode *msg)
1416 {
1417 stonith_event_t *event = pcmk__assert_alloc(1, sizeof(stonith_event_t));
1418 struct event_private *event_private = NULL;
1419
1420 event->opaque = pcmk__assert_alloc(1, sizeof(struct event_private));
1421 event_private = (struct event_private *) event->opaque;
1422
1423 crm_log_xml_trace(msg, "stonith_notify");
1424
1425
1426 stonith__xe_get_result(msg, &event_private->result);
1427 event->operation = crm_element_value_copy(msg, PCMK__XA_ST_OP);
1428
1429
1430 event->result = pcmk_rc2legacy(stonith__result2rc(&event_private->result));
1431
1432
1433
1434 if (pcmk__str_eq(event->operation, PCMK__VALUE_ST_NOTIFY_FENCE,
1435 pcmk__str_none)) {
1436 xmlNode *data = get_event_data_xml(msg, event->operation);
1437
1438 if (data == NULL) {
1439 crm_err("No data for %s event", event->operation);
1440 crm_log_xml_notice(msg, "BadEvent");
1441 } else {
1442 event->origin = crm_element_value_copy(data, PCMK__XA_ST_ORIGIN);
1443 event->action = crm_element_value_copy(data,
1444 PCMK__XA_ST_DEVICE_ACTION);
1445 event->target = crm_element_value_copy(data, PCMK__XA_ST_TARGET);
1446 event->executioner = crm_element_value_copy(data,
1447 PCMK__XA_ST_DELEGATE);
1448 event->id = crm_element_value_copy(data, PCMK__XA_ST_REMOTE_OP);
1449 event->client_origin =
1450 crm_element_value_copy(data, PCMK__XA_ST_CLIENTNAME);
1451 event->device = crm_element_value_copy(data, PCMK__XA_ST_DEVICE_ID);
1452 }
1453
1454 } else if (pcmk__str_any_of(event->operation,
1455 STONITH_OP_DEVICE_ADD, STONITH_OP_DEVICE_DEL,
1456 STONITH_OP_LEVEL_ADD, STONITH_OP_LEVEL_DEL,
1457 NULL)) {
1458 xmlNode *data = get_event_data_xml(msg, event->operation);
1459
1460 if (data == NULL) {
1461 crm_err("No data for %s event", event->operation);
1462 crm_log_xml_notice(msg, "BadEvent");
1463 } else {
1464 event->device = crm_element_value_copy(data, PCMK__XA_ST_DEVICE_ID);
1465 }
1466 }
1467
1468 return event;
1469 }
1470
1471 static void
1472 event_free(stonith_event_t * event)
1473 {
1474 struct event_private *event_private = event->opaque;
1475
1476 free(event->id);
1477 free(event->type);
1478 free(event->message);
1479 free(event->operation);
1480 free(event->origin);
1481 free(event->action);
1482 free(event->target);
1483 free(event->executioner);
1484 free(event->device);
1485 free(event->client_origin);
1486 pcmk__reset_result(&event_private->result);
1487 free(event->opaque);
1488 free(event);
1489 }
1490
1491 static void
1492 stonith_send_notification(gpointer data, gpointer user_data)
1493 {
1494 struct notify_blob_s *blob = user_data;
1495 stonith_notify_client_t *entry = data;
1496 stonith_event_t *st_event = NULL;
1497 const char *event = NULL;
1498
1499 if (blob->xml == NULL) {
1500 crm_warn("Skipping callback - NULL message");
1501 return;
1502 }
1503
1504 event = crm_element_value(blob->xml, PCMK__XA_SUBT);
1505
1506 if (entry == NULL) {
1507 crm_warn("Skipping callback - NULL callback client");
1508 return;
1509
1510 } else if (entry->delete) {
1511 crm_trace("Skipping callback - marked for deletion");
1512 return;
1513
1514 } else if (entry->notify == NULL) {
1515 crm_warn("Skipping callback - NULL callback");
1516 return;
1517
1518 } else if (!pcmk__str_eq(entry->event, event, pcmk__str_none)) {
1519 crm_trace("Skipping callback - event mismatch %p/%s vs. %s", entry, entry->event, event);
1520 return;
1521 }
1522
1523 st_event = xml_to_event(blob->xml);
1524
1525 crm_trace("Invoking callback for %p/%s event...", entry, event);
1526 entry->notify(blob->stonith, st_event);
1527 crm_trace("Callback invoked...");
1528
1529 event_free(st_event);
1530 }
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546 static int
1547 stonith_send_command(stonith_t * stonith, const char *op, xmlNode * data, xmlNode ** output_data,
1548 int call_options, int timeout)
1549 {
1550 int rc = 0;
1551 int reply_id = -1;
1552
1553 xmlNode *op_msg = NULL;
1554 xmlNode *op_reply = NULL;
1555 stonith_private_t *native = NULL;
1556
1557 CRM_ASSERT(stonith && stonith->st_private && op);
1558 native = stonith->st_private;
1559
1560 if (output_data != NULL) {
1561 *output_data = NULL;
1562 }
1563
1564 if ((stonith->state == stonith_disconnected) || (native->token == NULL)) {
1565 return -ENOTCONN;
1566 }
1567
1568
1569
1570
1571
1572 stonith->call_id++;
1573 if (stonith->call_id < 1) {
1574 stonith->call_id = 1;
1575 }
1576
1577 op_msg = stonith_create_op(stonith->call_id, native->token, op, data, call_options);
1578 if (op_msg == NULL) {
1579 return -EINVAL;
1580 }
1581
1582 crm_xml_add_int(op_msg, PCMK__XA_ST_TIMEOUT, timeout);
1583 crm_trace("Sending %s message to fencer with timeout %ds", op, timeout);
1584
1585 if (data) {
1586 const char *delay_s = crm_element_value(data, PCMK__XA_ST_DELAY);
1587
1588 if (delay_s) {
1589 crm_xml_add(op_msg, PCMK__XA_ST_DELAY, delay_s);
1590 }
1591 }
1592
1593 {
1594 enum crm_ipc_flags ipc_flags = crm_ipc_flags_none;
1595
1596 if (call_options & st_opt_sync_call) {
1597 pcmk__set_ipc_flags(ipc_flags, "stonith command",
1598 crm_ipc_client_response);
1599 }
1600 rc = crm_ipc_send(native->ipc, op_msg, ipc_flags,
1601 1000 * (timeout + 60), &op_reply);
1602 }
1603 free_xml(op_msg);
1604
1605 if (rc < 0) {
1606 crm_perror(LOG_ERR, "Couldn't perform %s operation (timeout=%ds): %d", op, timeout, rc);
1607 rc = -ECOMM;
1608 goto done;
1609 }
1610
1611 crm_log_xml_trace(op_reply, "Reply");
1612
1613 if (!(call_options & st_opt_sync_call)) {
1614 crm_trace("Async call %d, returning", stonith->call_id);
1615 free_xml(op_reply);
1616 return stonith->call_id;
1617 }
1618
1619 crm_element_value_int(op_reply, PCMK__XA_ST_CALLID, &reply_id);
1620
1621 if (reply_id == stonith->call_id) {
1622 pcmk__action_result_t result = PCMK__UNKNOWN_RESULT;
1623
1624 crm_trace("Synchronous reply %d received", reply_id);
1625
1626 stonith__xe_get_result(op_reply, &result);
1627 rc = pcmk_rc2legacy(stonith__result2rc(&result));
1628 pcmk__reset_result(&result);
1629
1630 if ((call_options & st_opt_discard_reply) || output_data == NULL) {
1631 crm_trace("Discarding reply");
1632
1633 } else {
1634 *output_data = op_reply;
1635 op_reply = NULL;
1636 }
1637
1638 } else if (reply_id <= 0) {
1639 crm_err("Received bad reply: No id set");
1640 crm_log_xml_err(op_reply, "Bad reply");
1641 free_xml(op_reply);
1642 op_reply = NULL;
1643 rc = -ENOMSG;
1644
1645 } else {
1646 crm_err("Received bad reply: %d (wanted %d)", reply_id, stonith->call_id);
1647 crm_log_xml_err(op_reply, "Old reply");
1648 free_xml(op_reply);
1649 op_reply = NULL;
1650 rc = -ENOMSG;
1651 }
1652
1653 done:
1654 if (!crm_ipc_connected(native->ipc)) {
1655 crm_err("Fencer disconnected");
1656 free(native->token); native->token = NULL;
1657 stonith->state = stonith_disconnected;
1658 }
1659
1660 free_xml(op_reply);
1661 return rc;
1662 }
1663
1664
1665 bool
1666 stonith_dispatch(stonith_t * st)
1667 {
1668 gboolean stay_connected = TRUE;
1669 stonith_private_t *private = NULL;
1670
1671 CRM_ASSERT(st != NULL);
1672 private = st->st_private;
1673
1674 while (crm_ipc_ready(private->ipc)) {
1675
1676 if (crm_ipc_read(private->ipc) > 0) {
1677 const char *msg = crm_ipc_buffer(private->ipc);
1678
1679 stonith_dispatch_internal(msg, strlen(msg), st);
1680 }
1681
1682 if (!crm_ipc_connected(private->ipc)) {
1683 crm_err("Connection closed");
1684 stay_connected = FALSE;
1685 }
1686 }
1687
1688 return stay_connected;
1689 }
1690
1691 static int
1692 stonith_api_free(stonith_t * stonith)
1693 {
1694 int rc = pcmk_ok;
1695
1696 crm_trace("Destroying %p", stonith);
1697
1698 if (stonith->state != stonith_disconnected) {
1699 crm_trace("Unregistering notifications and disconnecting %p first",
1700 stonith);
1701 stonith->cmds->remove_notification(stonith, NULL);
1702 rc = stonith->cmds->disconnect(stonith);
1703 }
1704
1705 if (stonith->state == stonith_disconnected) {
1706 stonith_private_t *private = stonith->st_private;
1707
1708 crm_trace("Removing %d callbacks", g_hash_table_size(private->stonith_op_callback_table));
1709 g_hash_table_destroy(private->stonith_op_callback_table);
1710
1711 crm_trace("Destroying %d notification clients", g_list_length(private->notify_list));
1712 g_list_free_full(private->notify_list, free);
1713
1714 free(stonith->st_private);
1715 free(stonith->cmds);
1716 free(stonith);
1717
1718 } else {
1719 crm_err("Not free'ing active connection: %s (%d)", pcmk_strerror(rc), rc);
1720 }
1721
1722 return rc;
1723 }
1724
1725 void
1726 stonith_api_delete(stonith_t * stonith)
1727 {
1728 crm_trace("Destroying %p", stonith);
1729 if(stonith) {
1730 stonith->cmds->free(stonith);
1731 }
1732 }
1733
1734 static int
1735 stonith_api_validate(stonith_t *st, int call_options, const char *rsc_id,
1736 const char *namespace_s, const char *agent,
1737 const stonith_key_value_t *params, int timeout_sec,
1738 char **output, char **error_output)
1739 {
1740
1741
1742
1743
1744
1745 int rc = pcmk_ok;
1746
1747
1748
1749
1750
1751 const char *target = "node1";
1752 const char *host_arg = NULL;
1753
1754 GHashTable *params_table = pcmk__strkey_table(free, free);
1755
1756
1757 for (; params; params = params->next) {
1758 if (pcmk__str_eq(params->key, PCMK_STONITH_HOST_ARGUMENT,
1759 pcmk__str_none)) {
1760 host_arg = params->value;
1761 }
1762 if (!pcmk_stonith_param(params->key)) {
1763 pcmk__insert_dup(params_table, params->key, params->value);
1764 }
1765 }
1766
1767 #if SUPPORT_CIBSECRETS
1768 rc = pcmk__substitute_secrets(rsc_id, params_table);
1769 if (rc != pcmk_rc_ok) {
1770 crm_warn("Could not replace secret parameters for validation of %s: %s",
1771 agent, pcmk_rc_str(rc));
1772
1773 }
1774 #endif
1775
1776 if (output) {
1777 *output = NULL;
1778 }
1779 if (error_output) {
1780 *error_output = NULL;
1781 }
1782
1783 if (timeout_sec <= 0) {
1784 timeout_sec = PCMK_DEFAULT_METADATA_TIMEOUT_MS;
1785 }
1786
1787 switch (stonith_get_namespace(agent, namespace_s)) {
1788 case st_namespace_rhcs:
1789 rc = stonith__rhcs_validate(st, call_options, target, agent,
1790 params_table, host_arg, timeout_sec,
1791 output, error_output);
1792 break;
1793
1794 #if HAVE_STONITH_STONITH_H
1795 case st_namespace_lha:
1796 rc = stonith__lha_validate(st, call_options, target, agent,
1797 params_table, timeout_sec, output,
1798 error_output);
1799 break;
1800 #endif
1801
1802 case st_namespace_invalid:
1803 errno = ENOENT;
1804 rc = -errno;
1805
1806 if (error_output) {
1807 *error_output = crm_strdup_printf("Agent %s not found", agent);
1808 } else {
1809 crm_err("Agent %s not found", agent);
1810 }
1811
1812 break;
1813
1814 default:
1815 errno = EOPNOTSUPP;
1816 rc = -errno;
1817
1818 if (error_output) {
1819 *error_output = crm_strdup_printf("Agent %s does not support validation",
1820 agent);
1821 } else {
1822 crm_err("Agent %s does not support validation", agent);
1823 }
1824
1825 break;
1826 }
1827
1828 g_hash_table_destroy(params_table);
1829 return rc;
1830 }
1831
1832 stonith_t *
1833 stonith_api_new(void)
1834 {
1835 stonith_t *new_stonith = NULL;
1836 stonith_private_t *private = NULL;
1837
1838 new_stonith = calloc(1, sizeof(stonith_t));
1839 if (new_stonith == NULL) {
1840 return NULL;
1841 }
1842
1843 private = calloc(1, sizeof(stonith_private_t));
1844 if (private == NULL) {
1845 free(new_stonith);
1846 return NULL;
1847 }
1848 new_stonith->st_private = private;
1849
1850 private->stonith_op_callback_table = pcmk__intkey_table(stonith_destroy_op_callback);
1851 private->notify_list = NULL;
1852 private->notify_refcnt = 0;
1853 private->notify_deletes = FALSE;
1854
1855 new_stonith->call_id = 1;
1856 new_stonith->state = stonith_disconnected;
1857
1858 new_stonith->cmds = calloc(1, sizeof(stonith_api_operations_t));
1859 if (new_stonith->cmds == NULL) {
1860 free(new_stonith->st_private);
1861 free(new_stonith);
1862 return NULL;
1863 }
1864
1865
1866 new_stonith->cmds->free = stonith_api_free;
1867 new_stonith->cmds->connect = stonith_api_signon;
1868 new_stonith->cmds->disconnect = stonith_api_signoff;
1869
1870 new_stonith->cmds->list = stonith_api_list;
1871 new_stonith->cmds->monitor = stonith_api_monitor;
1872 new_stonith->cmds->status = stonith_api_status;
1873 new_stonith->cmds->fence = stonith_api_fence;
1874 new_stonith->cmds->fence_with_delay = stonith_api_fence_with_delay;
1875 new_stonith->cmds->confirm = stonith_api_confirm;
1876 new_stonith->cmds->history = stonith_api_history;
1877
1878 new_stonith->cmds->list_agents = stonith_api_device_list;
1879 new_stonith->cmds->metadata = stonith_api_device_metadata;
1880
1881 new_stonith->cmds->query = stonith_api_query;
1882 new_stonith->cmds->remove_device = stonith_api_remove_device;
1883 new_stonith->cmds->register_device = stonith_api_register_device;
1884
1885 new_stonith->cmds->remove_level = stonith_api_remove_level;
1886 new_stonith->cmds->remove_level_full = stonith_api_remove_level_full;
1887 new_stonith->cmds->register_level = stonith_api_register_level;
1888 new_stonith->cmds->register_level_full = stonith_api_register_level_full;
1889
1890 new_stonith->cmds->remove_callback = stonith_api_del_callback;
1891 new_stonith->cmds->register_callback = stonith_api_add_callback;
1892 new_stonith->cmds->remove_notification = stonith_api_del_notification;
1893 new_stonith->cmds->register_notification = stonith_api_add_notification;
1894
1895 new_stonith->cmds->validate = stonith_api_validate;
1896
1897
1898 return new_stonith;
1899 }
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910 int
1911 stonith_api_connect_retry(stonith_t *st, const char *name, int max_attempts)
1912 {
1913 int rc = -EINVAL;
1914
1915 for (int attempt = 1; attempt <= max_attempts; attempt++) {
1916 rc = st->cmds->connect(st, name, NULL);
1917 if (rc == pcmk_ok) {
1918 return pcmk_ok;
1919 } else if (attempt < max_attempts) {
1920 crm_notice("Fencer connection attempt %d of %d failed (retrying in 2s): %s "
1921 CRM_XS " rc=%d",
1922 attempt, max_attempts, pcmk_strerror(rc), rc);
1923 sleep(2);
1924 }
1925 }
1926 crm_notice("Could not connect to fencer: %s " CRM_XS " rc=%d",
1927 pcmk_strerror(rc), rc);
1928 return rc;
1929 }
1930
1931 stonith_key_value_t *
1932 stonith_key_value_add(stonith_key_value_t * head, const char *key, const char *value)
1933 {
1934 stonith_key_value_t *p, *end;
1935
1936 p = pcmk__assert_alloc(1, sizeof(stonith_key_value_t));
1937 p->key = pcmk__str_copy(key);
1938 p->value = pcmk__str_copy(value);
1939
1940 end = head;
1941 while (end && end->next) {
1942 end = end->next;
1943 }
1944
1945 if (end) {
1946 end->next = p;
1947 } else {
1948 head = p;
1949 }
1950
1951 return head;
1952 }
1953
1954 void
1955 stonith_key_value_freeall(stonith_key_value_t * head, int keys, int values)
1956 {
1957 stonith_key_value_t *p;
1958
1959 while (head) {
1960 p = head->next;
1961 if (keys) {
1962 free(head->key);
1963 }
1964 if (values) {
1965 free(head->value);
1966 }
1967 free(head);
1968 head = p;
1969 }
1970 }
1971
1972 #define api_log_open() openlog("stonith-api", LOG_CONS | LOG_NDELAY | LOG_PID, LOG_DAEMON)
1973 #define api_log(level, fmt, args...) syslog(level, "%s: "fmt, __func__, args)
1974
1975 int
1976 stonith_api_kick(uint32_t nodeid, const char *uname, int timeout, bool off)
1977 {
1978 int rc = pcmk_ok;
1979 stonith_t *st = stonith_api_new();
1980 const char *action = off? PCMK_ACTION_OFF : PCMK_ACTION_REBOOT;
1981
1982 api_log_open();
1983 if (st == NULL) {
1984 api_log(LOG_ERR, "API initialization failed, could not kick (%s) node %u/%s",
1985 action, nodeid, uname);
1986 return -EPROTO;
1987 }
1988
1989 rc = st->cmds->connect(st, "stonith-api", NULL);
1990 if (rc != pcmk_ok) {
1991 api_log(LOG_ERR, "Connection failed, could not kick (%s) node %u/%s : %s (%d)",
1992 action, nodeid, uname, pcmk_strerror(rc), rc);
1993 } else {
1994 char *name = (uname == NULL)? pcmk__itoa(nodeid) : strdup(uname);
1995 int opts = 0;
1996
1997 stonith__set_call_options(opts, name,
1998 st_opt_sync_call|st_opt_allow_suicide);
1999 if ((uname == NULL) && (nodeid > 0)) {
2000 stonith__set_call_options(opts, name, st_opt_cs_nodeid);
2001 }
2002 rc = st->cmds->fence(st, opts, name, action, timeout, 0);
2003 free(name);
2004
2005 if (rc != pcmk_ok) {
2006 api_log(LOG_ERR, "Could not kick (%s) node %u/%s : %s (%d)",
2007 action, nodeid, uname, pcmk_strerror(rc), rc);
2008 } else {
2009 api_log(LOG_NOTICE, "Node %u/%s kicked: %s", nodeid, uname, action);
2010 }
2011 }
2012
2013 stonith_api_delete(st);
2014 return rc;
2015 }
2016
2017 time_t
2018 stonith_api_time(uint32_t nodeid, const char *uname, bool in_progress)
2019 {
2020 int rc = pcmk_ok;
2021 time_t when = 0;
2022 stonith_t *st = stonith_api_new();
2023 stonith_history_t *history = NULL, *hp = NULL;
2024
2025 if (st == NULL) {
2026 api_log(LOG_ERR, "Could not retrieve fence history for %u/%s: "
2027 "API initialization failed", nodeid, uname);
2028 return when;
2029 }
2030
2031 rc = st->cmds->connect(st, "stonith-api", NULL);
2032 if (rc != pcmk_ok) {
2033 api_log(LOG_NOTICE, "Connection failed: %s (%d)", pcmk_strerror(rc), rc);
2034 } else {
2035 int entries = 0;
2036 int progress = 0;
2037 int completed = 0;
2038 int opts = 0;
2039 char *name = (uname == NULL)? pcmk__itoa(nodeid) : strdup(uname);
2040
2041 stonith__set_call_options(opts, name, st_opt_sync_call);
2042 if ((uname == NULL) && (nodeid > 0)) {
2043 stonith__set_call_options(opts, name, st_opt_cs_nodeid);
2044 }
2045 rc = st->cmds->history(st, opts, name, &history, 120);
2046 free(name);
2047
2048 for (hp = history; hp; hp = hp->next) {
2049 entries++;
2050 if (in_progress) {
2051 progress++;
2052 if (hp->state != st_done && hp->state != st_failed) {
2053 when = time(NULL);
2054 }
2055
2056 } else if (hp->state == st_done) {
2057 completed++;
2058 if (hp->completed > when) {
2059 when = hp->completed;
2060 }
2061 }
2062 }
2063
2064 stonith_history_free(history);
2065
2066 if(rc == pcmk_ok) {
2067 api_log(LOG_INFO, "Found %d entries for %u/%s: %d in progress, %d completed", entries, nodeid, uname, progress, completed);
2068 } else {
2069 api_log(LOG_ERR, "Could not retrieve fence history for %u/%s: %s (%d)", nodeid, uname, pcmk_strerror(rc), rc);
2070 }
2071 }
2072
2073 stonith_api_delete(st);
2074
2075 if(when) {
2076 api_log(LOG_INFO, "Node %u/%s last kicked at: %ld", nodeid, uname, (long int)when);
2077 }
2078 return when;
2079 }
2080
2081 bool
2082 stonith_agent_exists(const char *agent, int timeout)
2083 {
2084 stonith_t *st = NULL;
2085 stonith_key_value_t *devices = NULL;
2086 stonith_key_value_t *dIter = NULL;
2087 bool rc = FALSE;
2088
2089 if (agent == NULL) {
2090 return rc;
2091 }
2092
2093 st = stonith_api_new();
2094 if (st == NULL) {
2095 crm_err("Could not list fence agents: API memory allocation failed");
2096 return FALSE;
2097 }
2098 st->cmds->list_agents(st, st_opt_sync_call, NULL, &devices, timeout == 0 ? 120 : timeout);
2099
2100 for (dIter = devices; dIter != NULL; dIter = dIter->next) {
2101 if (pcmk__str_eq(dIter->value, agent, pcmk__str_none)) {
2102 rc = TRUE;
2103 break;
2104 }
2105 }
2106
2107 stonith_key_value_freeall(devices, 1, 1);
2108 stonith_api_delete(st);
2109 return rc;
2110 }
2111
2112 const char *
2113 stonith_action_str(const char *action)
2114 {
2115 if (action == NULL) {
2116 return "fencing";
2117 } else if (strcmp(action, PCMK_ACTION_ON) == 0) {
2118 return "unfencing";
2119 } else if (strcmp(action, PCMK_ACTION_OFF) == 0) {
2120 return "turning off";
2121 } else {
2122 return action;
2123 }
2124 }
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134 static void
2135 parse_list_line(const char *line, int len, GList **output)
2136 {
2137 size_t i = 0;
2138 size_t entry_start = 0;
2139
2140
2141
2142
2143
2144 if (strstr(line, "invalid") || strstr(line, "variable")) {
2145 crm_debug("Skipping list output line: %s", line);
2146 return;
2147 }
2148
2149
2150 for (i = 0; i <= len; i++) {
2151
2152 if (isspace(line[i]) || (line[i] == ',') || (line[i] == ';')
2153 || (line[i] == '\0')) {
2154
2155
2156 int rc = 0;
2157 char *entry = NULL;
2158
2159 if (i == entry_start) {
2160
2161 entry_start = i + 1;
2162 continue;
2163 }
2164
2165 entry = pcmk__assert_alloc(i - entry_start + 1, sizeof(char));
2166
2167
2168
2169
2170
2171 rc = sscanf(line + entry_start, "%[a-zA-Z0-9_-.]", entry);
2172 if (rc != 1) {
2173 crm_warn("Could not parse list output entry: %s "
2174 CRM_XS " entry_start=%d position=%d",
2175 line + entry_start, entry_start, i);
2176 free(entry);
2177
2178 } else if (pcmk__strcase_any_of(entry, PCMK_ACTION_ON,
2179 PCMK_ACTION_OFF, NULL)) {
2180
2181
2182
2183
2184
2185
2186
2187
2188 free(entry);
2189
2190 } else {
2191
2192 *output = g_list_append(*output, entry);
2193 }
2194 entry_start = i + 1;
2195 }
2196 }
2197 }
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220 GList *
2221 stonith__parse_targets(const char *target_spec)
2222 {
2223 GList *targets = NULL;
2224
2225 if (target_spec != NULL) {
2226 size_t out_len = strlen(target_spec);
2227 size_t line_start = 0;
2228
2229 for (size_t i = 0; i <= out_len; ++i) {
2230 if ((target_spec[i] == '\n') || (target_spec[i] == '\0')
2231 || ((target_spec[i] == '\\') && (target_spec[i + 1] == 'n'))) {
2232
2233
2234 int len = i - line_start;
2235
2236 if (len > 0) {
2237 char *line = strndup(target_spec + line_start, len);
2238
2239 line[len] = '\0';
2240 parse_list_line(line, len, &targets);
2241 free(line);
2242 }
2243 if (target_spec[i] == '\\') {
2244 ++i;
2245 }
2246 line_start = i + 1;
2247 }
2248 }
2249 }
2250 return targets;
2251 }
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264 const char *
2265 stonith__later_succeeded(const stonith_history_t *event,
2266 const stonith_history_t *top_history)
2267 {
2268 const char *other = NULL;
2269
2270 for (const stonith_history_t *prev_hp = top_history;
2271 prev_hp != NULL; prev_hp = prev_hp->next) {
2272 if (prev_hp == event) {
2273 break;
2274 }
2275 if ((prev_hp->state == st_done) &&
2276 pcmk__str_eq(event->target, prev_hp->target, pcmk__str_casei) &&
2277 pcmk__str_eq(event->action, prev_hp->action, pcmk__str_none) &&
2278 ((event->completed < prev_hp->completed) ||
2279 ((event->completed == prev_hp->completed) && (event->completed_nsec < prev_hp->completed_nsec)))) {
2280
2281 if ((event->delegate == NULL)
2282 || pcmk__str_eq(event->delegate, prev_hp->delegate,
2283 pcmk__str_casei)) {
2284
2285 return prev_hp->delegate;
2286
2287 } else if (other == NULL) {
2288
2289 other = (prev_hp->delegate == NULL)? "some node" : prev_hp->delegate;
2290 }
2291 }
2292 }
2293 return other;
2294 }
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304 stonith_history_t *
2305 stonith__sort_history(stonith_history_t *history)
2306 {
2307 stonith_history_t *new = NULL, *pending = NULL, *hp, *np, *tmp;
2308
2309 for (hp = history; hp; ) {
2310 tmp = hp->next;
2311 if ((hp->state == st_done) || (hp->state == st_failed)) {
2312
2313 if ((!new) || (hp->completed > new->completed) ||
2314 ((hp->completed == new->completed) && (hp->completed_nsec > new->completed_nsec))) {
2315 hp->next = new;
2316 new = hp;
2317 } else {
2318 np = new;
2319 do {
2320 if ((!np->next) || (hp->completed > np->next->completed) ||
2321 ((hp->completed == np->next->completed) && (hp->completed_nsec > np->next->completed_nsec))) {
2322 hp->next = np->next;
2323 np->next = hp;
2324 break;
2325 }
2326 np = np->next;
2327 } while (1);
2328 }
2329 } else {
2330
2331 hp->next = pending;
2332 pending = hp;
2333 }
2334 hp = tmp;
2335 }
2336
2337
2338 if (pending) {
2339 stonith_history_t *last_pending = pending;
2340
2341 while (last_pending->next) {
2342 last_pending = last_pending->next;
2343 }
2344
2345 last_pending->next = new;
2346 new = pending;
2347 }
2348 return new;
2349 }
2350
2351
2352
2353
2354
2355
2356
2357
2358 const char *
2359 stonith_op_state_str(enum op_state state)
2360 {
2361 switch (state) {
2362 case st_query: return "querying";
2363 case st_exec: return "executing";
2364 case st_done: return "completed";
2365 case st_duplicate: return "duplicate";
2366 case st_failed: return "failed";
2367 }
2368 return "unknown";
2369 }
2370
2371 stonith_history_t *
2372 stonith__first_matching_event(stonith_history_t *history,
2373 bool (*matching_fn)(stonith_history_t *, void *),
2374 void *user_data)
2375 {
2376 for (stonith_history_t *hp = history; hp; hp = hp->next) {
2377 if (matching_fn(hp, user_data)) {
2378 return hp;
2379 }
2380 }
2381
2382 return NULL;
2383 }
2384
2385 bool
2386 stonith__event_state_pending(stonith_history_t *history, void *user_data)
2387 {
2388 return history->state != st_failed && history->state != st_done;
2389 }
2390
2391 bool
2392 stonith__event_state_eq(stonith_history_t *history, void *user_data)
2393 {
2394 return history->state == GPOINTER_TO_INT(user_data);
2395 }
2396
2397 bool
2398 stonith__event_state_neq(stonith_history_t *history, void *user_data)
2399 {
2400 return history->state != GPOINTER_TO_INT(user_data);
2401 }
2402
2403 void
2404 stonith__device_parameter_flags(uint32_t *device_flags, const char *device_name,
2405 xmlNode *metadata)
2406 {
2407 xmlXPathObjectPtr xpath = NULL;
2408 int max = 0;
2409 int lpc = 0;
2410
2411 CRM_CHECK((device_flags != NULL) && (metadata != NULL), return);
2412
2413 xpath = xpath_search(metadata, "//" PCMK_XE_PARAMETER);
2414 max = numXpathResults(xpath);
2415
2416 if (max <= 0) {
2417 freeXpathObject(xpath);
2418 return;
2419 }
2420
2421 for (lpc = 0; lpc < max; lpc++) {
2422 const char *parameter = NULL;
2423 xmlNode *match = getXpathResult(xpath, lpc);
2424
2425 CRM_LOG_ASSERT(match != NULL);
2426 if (match == NULL) {
2427 continue;
2428 }
2429
2430 parameter = crm_element_value(match, PCMK_XA_NAME);
2431
2432 if (pcmk__str_eq(parameter, "plug", pcmk__str_casei)) {
2433 stonith__set_device_flags(*device_flags, device_name,
2434 st_device_supports_parameter_plug);
2435
2436 } else if (pcmk__str_eq(parameter, "port", pcmk__str_casei)) {
2437 stonith__set_device_flags(*device_flags, device_name,
2438 st_device_supports_parameter_port);
2439 }
2440 }
2441
2442 freeXpathObject(xpath);
2443 }
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464 int
2465 stonith__metadata_async(const char *agent, int timeout_sec,
2466 void (*callback)(int pid,
2467 const pcmk__action_result_t *result,
2468 void *user_data),
2469 void *user_data)
2470 {
2471 switch (stonith_get_namespace(agent, NULL)) {
2472 case st_namespace_rhcs:
2473 {
2474 stonith_action_t *action = NULL;
2475 int rc = pcmk_ok;
2476
2477 action = stonith__action_create(agent, PCMK_ACTION_METADATA,
2478 NULL, 0, timeout_sec, NULL,
2479 NULL, NULL);
2480
2481 rc = stonith__execute_async(action, user_data, callback, NULL);
2482 if (rc != pcmk_ok) {
2483 callback(0, stonith__action_result(action), user_data);
2484 stonith__destroy_action(action);
2485 }
2486 return pcmk_legacy2rc(rc);
2487 }
2488
2489 #if HAVE_STONITH_STONITH_H
2490 case st_namespace_lha:
2491
2492 {
2493 pcmk__action_result_t result = {
2494 .exit_status = CRM_EX_OK,
2495 .execution_status = PCMK_EXEC_DONE,
2496 .exit_reason = NULL,
2497 .action_stdout = NULL,
2498 .action_stderr = NULL,
2499 };
2500
2501 stonith__lha_metadata(agent, timeout_sec,
2502 &result.action_stdout);
2503 callback(0, &result, user_data);
2504 pcmk__reset_result(&result);
2505 return pcmk_rc_ok;
2506 }
2507 #endif
2508
2509 default:
2510 {
2511 pcmk__action_result_t result = {
2512 .exit_status = CRM_EX_NOSUCH,
2513 .execution_status = PCMK_EXEC_ERROR_HARD,
2514 .exit_reason = crm_strdup_printf("No such agent '%s'",
2515 agent),
2516 .action_stdout = NULL,
2517 .action_stderr = NULL,
2518 };
2519
2520 callback(0, &result, user_data);
2521 pcmk__reset_result(&result);
2522 return ENOENT;
2523 }
2524 }
2525 }
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535 int
2536 stonith__exit_status(const stonith_callback_data_t *data)
2537 {
2538 if ((data == NULL) || (data->opaque == NULL)) {
2539 return CRM_EX_ERROR;
2540 }
2541 return ((pcmk__action_result_t *) data->opaque)->exit_status;
2542 }
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552 int
2553 stonith__execution_status(const stonith_callback_data_t *data)
2554 {
2555 if ((data == NULL) || (data->opaque == NULL)) {
2556 return PCMK_EXEC_UNKNOWN;
2557 }
2558 return ((pcmk__action_result_t *) data->opaque)->execution_status;
2559 }
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569 const char *
2570 stonith__exit_reason(const stonith_callback_data_t *data)
2571 {
2572 if ((data == NULL) || (data->opaque == NULL)) {
2573 return NULL;
2574 }
2575 return ((pcmk__action_result_t *) data->opaque)->exit_reason;
2576 }
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586 int
2587 stonith__event_exit_status(const stonith_event_t *event)
2588 {
2589 if ((event == NULL) || (event->opaque == NULL)) {
2590 return CRM_EX_ERROR;
2591 } else {
2592 struct event_private *event_private = event->opaque;
2593
2594 return event_private->result.exit_status;
2595 }
2596 }
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606 int
2607 stonith__event_execution_status(const stonith_event_t *event)
2608 {
2609 if ((event == NULL) || (event->opaque == NULL)) {
2610 return PCMK_EXEC_UNKNOWN;
2611 } else {
2612 struct event_private *event_private = event->opaque;
2613
2614 return event_private->result.execution_status;
2615 }
2616 }
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626 const char *
2627 stonith__event_exit_reason(const stonith_event_t *event)
2628 {
2629 if ((event == NULL) || (event->opaque == NULL)) {
2630 return NULL;
2631 } else {
2632 struct event_private *event_private = event->opaque;
2633
2634 return event_private->result.exit_reason;
2635 }
2636 }
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648 char *
2649 stonith__event_description(const stonith_event_t *event)
2650 {
2651
2652 const char *origin = pcmk__s(event->client_origin, "a client");
2653 const char *origin_node = pcmk__s(event->origin, "a node");
2654 const char *executioner = pcmk__s(event->executioner, "the cluster");
2655 const char *device = pcmk__s(event->device, "unknown");
2656 const char *action = pcmk__s(event->action, event->operation);
2657 const char *target = pcmk__s(event->target, "no node");
2658 const char *reason = stonith__event_exit_reason(event);
2659 const char *status;
2660
2661 if (action == NULL) {
2662 action = "(unknown)";
2663 }
2664
2665 if (stonith__event_execution_status(event) != PCMK_EXEC_DONE) {
2666 status = pcmk_exec_status_str(stonith__event_execution_status(event));
2667 } else if (stonith__event_exit_status(event) != CRM_EX_OK) {
2668 status = pcmk_exec_status_str(PCMK_EXEC_ERROR);
2669 } else {
2670 status = crm_exit_str(CRM_EX_OK);
2671 }
2672
2673 if (pcmk__str_eq(event->operation, PCMK__VALUE_ST_NOTIFY_HISTORY,
2674 pcmk__str_none)) {
2675 return crm_strdup_printf("Fencing history may have changed");
2676
2677 } else if (pcmk__str_eq(event->operation, STONITH_OP_DEVICE_ADD,
2678 pcmk__str_none)) {
2679 return crm_strdup_printf("A fencing device (%s) was added", device);
2680
2681 } else if (pcmk__str_eq(event->operation, STONITH_OP_DEVICE_DEL,
2682 pcmk__str_none)) {
2683 return crm_strdup_printf("A fencing device (%s) was removed", device);
2684
2685 } else if (pcmk__str_eq(event->operation, STONITH_OP_LEVEL_ADD,
2686 pcmk__str_none)) {
2687 return crm_strdup_printf("A fencing topology level (%s) was added",
2688 device);
2689
2690 } else if (pcmk__str_eq(event->operation, STONITH_OP_LEVEL_DEL,
2691 pcmk__str_none)) {
2692 return crm_strdup_printf("A fencing topology level (%s) was removed",
2693 device);
2694 }
2695
2696
2697
2698 return crm_strdup_printf("Operation %s of %s by %s for %s@%s: %s%s%s%s (ref=%s)",
2699 action, target, executioner, origin, origin_node,
2700 status,
2701 ((reason == NULL)? "" : " ("), pcmk__s(reason, ""),
2702 ((reason == NULL)? "" : ")"),
2703 pcmk__s(event->id, "(none)"));
2704 }
2705
2706
2707
2708
2709
2710 const char *get_stonith_provider(const char *agent, const char *provider);
2711
2712 const char *
2713 get_stonith_provider(const char *agent, const char *provider)
2714 {
2715 return stonith_namespace2text(stonith_get_namespace(agent, provider));
2716 }
2717
2718
2719
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