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 pcmk__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 pcmk__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 pcmk__assert((stonith != NULL) && (stonith->st_private != NULL)
1558 && (op != NULL));
1559 native = stonith->st_private;
1560
1561 if (output_data != NULL) {
1562 *output_data = NULL;
1563 }
1564
1565 if ((stonith->state == stonith_disconnected) || (native->token == NULL)) {
1566 return -ENOTCONN;
1567 }
1568
1569
1570
1571
1572
1573 stonith->call_id++;
1574 if (stonith->call_id < 1) {
1575 stonith->call_id = 1;
1576 }
1577
1578 op_msg = stonith_create_op(stonith->call_id, native->token, op, data, call_options);
1579 if (op_msg == NULL) {
1580 return -EINVAL;
1581 }
1582
1583 crm_xml_add_int(op_msg, PCMK__XA_ST_TIMEOUT, timeout);
1584 crm_trace("Sending %s message to fencer with timeout %ds", op, timeout);
1585
1586 if (data) {
1587 const char *delay_s = crm_element_value(data, PCMK__XA_ST_DELAY);
1588
1589 if (delay_s) {
1590 crm_xml_add(op_msg, PCMK__XA_ST_DELAY, delay_s);
1591 }
1592 }
1593
1594 {
1595 enum crm_ipc_flags ipc_flags = crm_ipc_flags_none;
1596
1597 if (call_options & st_opt_sync_call) {
1598 pcmk__set_ipc_flags(ipc_flags, "stonith command",
1599 crm_ipc_client_response);
1600 }
1601 rc = crm_ipc_send(native->ipc, op_msg, ipc_flags,
1602 1000 * (timeout + 60), &op_reply);
1603 }
1604 free_xml(op_msg);
1605
1606 if (rc < 0) {
1607 crm_perror(LOG_ERR, "Couldn't perform %s operation (timeout=%ds): %d", op, timeout, rc);
1608 rc = -ECOMM;
1609 goto done;
1610 }
1611
1612 crm_log_xml_trace(op_reply, "Reply");
1613
1614 if (!(call_options & st_opt_sync_call)) {
1615 crm_trace("Async call %d, returning", stonith->call_id);
1616 free_xml(op_reply);
1617 return stonith->call_id;
1618 }
1619
1620 crm_element_value_int(op_reply, PCMK__XA_ST_CALLID, &reply_id);
1621
1622 if (reply_id == stonith->call_id) {
1623 pcmk__action_result_t result = PCMK__UNKNOWN_RESULT;
1624
1625 crm_trace("Synchronous reply %d received", reply_id);
1626
1627 stonith__xe_get_result(op_reply, &result);
1628 rc = pcmk_rc2legacy(stonith__result2rc(&result));
1629 pcmk__reset_result(&result);
1630
1631 if ((call_options & st_opt_discard_reply) || output_data == NULL) {
1632 crm_trace("Discarding reply");
1633
1634 } else {
1635 *output_data = op_reply;
1636 op_reply = NULL;
1637 }
1638
1639 } else if (reply_id <= 0) {
1640 crm_err("Received bad reply: No id set");
1641 crm_log_xml_err(op_reply, "Bad reply");
1642 free_xml(op_reply);
1643 op_reply = NULL;
1644 rc = -ENOMSG;
1645
1646 } else {
1647 crm_err("Received bad reply: %d (wanted %d)", reply_id, stonith->call_id);
1648 crm_log_xml_err(op_reply, "Old reply");
1649 free_xml(op_reply);
1650 op_reply = NULL;
1651 rc = -ENOMSG;
1652 }
1653
1654 done:
1655 if (!crm_ipc_connected(native->ipc)) {
1656 crm_err("Fencer disconnected");
1657 free(native->token); native->token = NULL;
1658 stonith->state = stonith_disconnected;
1659 }
1660
1661 free_xml(op_reply);
1662 return rc;
1663 }
1664
1665
1666 bool
1667 stonith_dispatch(stonith_t * st)
1668 {
1669 gboolean stay_connected = TRUE;
1670 stonith_private_t *private = NULL;
1671
1672 pcmk__assert(st != NULL);
1673 private = st->st_private;
1674
1675 while (crm_ipc_ready(private->ipc)) {
1676
1677 if (crm_ipc_read(private->ipc) > 0) {
1678 const char *msg = crm_ipc_buffer(private->ipc);
1679
1680 stonith_dispatch_internal(msg, strlen(msg), st);
1681 }
1682
1683 if (!crm_ipc_connected(private->ipc)) {
1684 crm_err("Connection closed");
1685 stay_connected = FALSE;
1686 }
1687 }
1688
1689 return stay_connected;
1690 }
1691
1692 static int
1693 stonith_api_free(stonith_t * stonith)
1694 {
1695 int rc = pcmk_ok;
1696
1697 crm_trace("Destroying %p", stonith);
1698
1699 if (stonith->state != stonith_disconnected) {
1700 crm_trace("Unregistering notifications and disconnecting %p first",
1701 stonith);
1702 stonith->cmds->remove_notification(stonith, NULL);
1703 rc = stonith->cmds->disconnect(stonith);
1704 }
1705
1706 if (stonith->state == stonith_disconnected) {
1707 stonith_private_t *private = stonith->st_private;
1708
1709 crm_trace("Removing %d callbacks", g_hash_table_size(private->stonith_op_callback_table));
1710 g_hash_table_destroy(private->stonith_op_callback_table);
1711
1712 crm_trace("Destroying %d notification clients", g_list_length(private->notify_list));
1713 g_list_free_full(private->notify_list, free);
1714
1715 free(stonith->st_private);
1716 free(stonith->cmds);
1717 free(stonith);
1718
1719 } else {
1720 crm_err("Not free'ing active connection: %s (%d)", pcmk_strerror(rc), rc);
1721 }
1722
1723 return rc;
1724 }
1725
1726 void
1727 stonith_api_delete(stonith_t * stonith)
1728 {
1729 crm_trace("Destroying %p", stonith);
1730 if(stonith) {
1731 stonith->cmds->free(stonith);
1732 }
1733 }
1734
1735 static int
1736 stonith_api_validate(stonith_t *st, int call_options, const char *rsc_id,
1737 const char *namespace_s, const char *agent,
1738 const stonith_key_value_t *params, int timeout_sec,
1739 char **output, char **error_output)
1740 {
1741
1742
1743
1744
1745
1746 int rc = pcmk_ok;
1747
1748
1749
1750
1751
1752 const char *target = "node1";
1753 const char *host_arg = NULL;
1754
1755 GHashTable *params_table = pcmk__strkey_table(free, free);
1756
1757
1758 for (; params; params = params->next) {
1759 if (pcmk__str_eq(params->key, PCMK_STONITH_HOST_ARGUMENT,
1760 pcmk__str_none)) {
1761 host_arg = params->value;
1762 }
1763 if (!pcmk_stonith_param(params->key)) {
1764 pcmk__insert_dup(params_table, params->key, params->value);
1765 }
1766 }
1767
1768 #if SUPPORT_CIBSECRETS
1769 rc = pcmk__substitute_secrets(rsc_id, params_table);
1770 if (rc != pcmk_rc_ok) {
1771 crm_warn("Could not replace secret parameters for validation of %s: %s",
1772 agent, pcmk_rc_str(rc));
1773
1774 }
1775 #endif
1776
1777 if (output) {
1778 *output = NULL;
1779 }
1780 if (error_output) {
1781 *error_output = NULL;
1782 }
1783
1784 if (timeout_sec <= 0) {
1785 timeout_sec = PCMK_DEFAULT_METADATA_TIMEOUT_MS;
1786 }
1787
1788 switch (stonith_get_namespace(agent, namespace_s)) {
1789 case st_namespace_rhcs:
1790 rc = stonith__rhcs_validate(st, call_options, target, agent,
1791 params_table, host_arg, timeout_sec,
1792 output, error_output);
1793 break;
1794
1795 #if HAVE_STONITH_STONITH_H
1796 case st_namespace_lha:
1797 rc = stonith__lha_validate(st, call_options, target, agent,
1798 params_table, timeout_sec, output,
1799 error_output);
1800 break;
1801 #endif
1802
1803 case st_namespace_invalid:
1804 errno = ENOENT;
1805 rc = -errno;
1806
1807 if (error_output) {
1808 *error_output = crm_strdup_printf("Agent %s not found", agent);
1809 } else {
1810 crm_err("Agent %s not found", agent);
1811 }
1812
1813 break;
1814
1815 default:
1816 errno = EOPNOTSUPP;
1817 rc = -errno;
1818
1819 if (error_output) {
1820 *error_output = crm_strdup_printf("Agent %s does not support validation",
1821 agent);
1822 } else {
1823 crm_err("Agent %s does not support validation", agent);
1824 }
1825
1826 break;
1827 }
1828
1829 g_hash_table_destroy(params_table);
1830 return rc;
1831 }
1832
1833 stonith_t *
1834 stonith_api_new(void)
1835 {
1836 stonith_t *new_stonith = NULL;
1837 stonith_private_t *private = NULL;
1838
1839 new_stonith = calloc(1, sizeof(stonith_t));
1840 if (new_stonith == NULL) {
1841 return NULL;
1842 }
1843
1844 private = calloc(1, sizeof(stonith_private_t));
1845 if (private == NULL) {
1846 free(new_stonith);
1847 return NULL;
1848 }
1849 new_stonith->st_private = private;
1850
1851 private->stonith_op_callback_table = pcmk__intkey_table(stonith_destroy_op_callback);
1852 private->notify_list = NULL;
1853 private->notify_refcnt = 0;
1854 private->notify_deletes = FALSE;
1855
1856 new_stonith->call_id = 1;
1857 new_stonith->state = stonith_disconnected;
1858
1859 new_stonith->cmds = calloc(1, sizeof(stonith_api_operations_t));
1860 if (new_stonith->cmds == NULL) {
1861 free(new_stonith->st_private);
1862 free(new_stonith);
1863 return NULL;
1864 }
1865
1866
1867 new_stonith->cmds->free = stonith_api_free;
1868 new_stonith->cmds->connect = stonith_api_signon;
1869 new_stonith->cmds->disconnect = stonith_api_signoff;
1870
1871 new_stonith->cmds->list = stonith_api_list;
1872 new_stonith->cmds->monitor = stonith_api_monitor;
1873 new_stonith->cmds->status = stonith_api_status;
1874 new_stonith->cmds->fence = stonith_api_fence;
1875 new_stonith->cmds->fence_with_delay = stonith_api_fence_with_delay;
1876 new_stonith->cmds->confirm = stonith_api_confirm;
1877 new_stonith->cmds->history = stonith_api_history;
1878
1879 new_stonith->cmds->list_agents = stonith_api_device_list;
1880 new_stonith->cmds->metadata = stonith_api_device_metadata;
1881
1882 new_stonith->cmds->query = stonith_api_query;
1883 new_stonith->cmds->remove_device = stonith_api_remove_device;
1884 new_stonith->cmds->register_device = stonith_api_register_device;
1885
1886 new_stonith->cmds->remove_level = stonith_api_remove_level;
1887 new_stonith->cmds->remove_level_full = stonith_api_remove_level_full;
1888 new_stonith->cmds->register_level = stonith_api_register_level;
1889 new_stonith->cmds->register_level_full = stonith_api_register_level_full;
1890
1891 new_stonith->cmds->remove_callback = stonith_api_del_callback;
1892 new_stonith->cmds->register_callback = stonith_api_add_callback;
1893 new_stonith->cmds->remove_notification = stonith_api_del_notification;
1894 new_stonith->cmds->register_notification = stonith_api_add_notification;
1895
1896 new_stonith->cmds->validate = stonith_api_validate;
1897
1898
1899 return new_stonith;
1900 }
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911 int
1912 stonith_api_connect_retry(stonith_t *st, const char *name, int max_attempts)
1913 {
1914 int rc = -EINVAL;
1915
1916 for (int attempt = 1; attempt <= max_attempts; attempt++) {
1917 rc = st->cmds->connect(st, name, NULL);
1918 if (rc == pcmk_ok) {
1919 return pcmk_ok;
1920 } else if (attempt < max_attempts) {
1921 crm_notice("Fencer connection attempt %d of %d failed (retrying in 2s): %s "
1922 CRM_XS " rc=%d",
1923 attempt, max_attempts, pcmk_strerror(rc), rc);
1924 sleep(2);
1925 }
1926 }
1927 crm_notice("Could not connect to fencer: %s " CRM_XS " rc=%d",
1928 pcmk_strerror(rc), rc);
1929 return rc;
1930 }
1931
1932 stonith_key_value_t *
1933 stonith_key_value_add(stonith_key_value_t * head, const char *key, const char *value)
1934 {
1935 stonith_key_value_t *p, *end;
1936
1937 p = pcmk__assert_alloc(1, sizeof(stonith_key_value_t));
1938 p->key = pcmk__str_copy(key);
1939 p->value = pcmk__str_copy(value);
1940
1941 end = head;
1942 while (end && end->next) {
1943 end = end->next;
1944 }
1945
1946 if (end) {
1947 end->next = p;
1948 } else {
1949 head = p;
1950 }
1951
1952 return head;
1953 }
1954
1955 void
1956 stonith_key_value_freeall(stonith_key_value_t * head, int keys, int values)
1957 {
1958 stonith_key_value_t *p;
1959
1960 while (head) {
1961 p = head->next;
1962 if (keys) {
1963 free(head->key);
1964 }
1965 if (values) {
1966 free(head->value);
1967 }
1968 free(head);
1969 head = p;
1970 }
1971 }
1972
1973 #define api_log_open() openlog("stonith-api", LOG_CONS | LOG_NDELAY | LOG_PID, LOG_DAEMON)
1974 #define api_log(level, fmt, args...) syslog(level, "%s: "fmt, __func__, args)
1975
1976 int
1977 stonith_api_kick(uint32_t nodeid, const char *uname, int timeout, bool off)
1978 {
1979 int rc = pcmk_ok;
1980 stonith_t *st = stonith_api_new();
1981 const char *action = off? PCMK_ACTION_OFF : PCMK_ACTION_REBOOT;
1982
1983 api_log_open();
1984 if (st == NULL) {
1985 api_log(LOG_ERR, "API initialization failed, could not kick (%s) node %u/%s",
1986 action, nodeid, uname);
1987 return -EPROTO;
1988 }
1989
1990 rc = st->cmds->connect(st, "stonith-api", NULL);
1991 if (rc != pcmk_ok) {
1992 api_log(LOG_ERR, "Connection failed, could not kick (%s) node %u/%s : %s (%d)",
1993 action, nodeid, uname, pcmk_strerror(rc), rc);
1994 } else {
1995 char *name = (uname == NULL)? pcmk__itoa(nodeid) : strdup(uname);
1996 int opts = 0;
1997
1998 stonith__set_call_options(opts, name,
1999 st_opt_sync_call|st_opt_allow_self_fencing);
2000 if ((uname == NULL) && (nodeid > 0)) {
2001 stonith__set_call_options(opts, name, st_opt_cs_nodeid);
2002 }
2003 rc = st->cmds->fence(st, opts, name, action, timeout, 0);
2004 free(name);
2005
2006 if (rc != pcmk_ok) {
2007 api_log(LOG_ERR, "Could not kick (%s) node %u/%s : %s (%d)",
2008 action, nodeid, uname, pcmk_strerror(rc), rc);
2009 } else {
2010 api_log(LOG_NOTICE, "Node %u/%s kicked: %s", nodeid, uname, action);
2011 }
2012 }
2013
2014 stonith_api_delete(st);
2015 return rc;
2016 }
2017
2018 time_t
2019 stonith_api_time(uint32_t nodeid, const char *uname, bool in_progress)
2020 {
2021 int rc = pcmk_ok;
2022 time_t when = 0;
2023 stonith_t *st = stonith_api_new();
2024 stonith_history_t *history = NULL, *hp = NULL;
2025
2026 if (st == NULL) {
2027 api_log(LOG_ERR, "Could not retrieve fence history for %u/%s: "
2028 "API initialization failed", nodeid, uname);
2029 return when;
2030 }
2031
2032 rc = st->cmds->connect(st, "stonith-api", NULL);
2033 if (rc != pcmk_ok) {
2034 api_log(LOG_NOTICE, "Connection failed: %s (%d)", pcmk_strerror(rc), rc);
2035 } else {
2036 int entries = 0;
2037 int progress = 0;
2038 int completed = 0;
2039 int opts = 0;
2040 char *name = (uname == NULL)? pcmk__itoa(nodeid) : strdup(uname);
2041
2042 stonith__set_call_options(opts, name, st_opt_sync_call);
2043 if ((uname == NULL) && (nodeid > 0)) {
2044 stonith__set_call_options(opts, name, st_opt_cs_nodeid);
2045 }
2046 rc = st->cmds->history(st, opts, name, &history, 120);
2047 free(name);
2048
2049 for (hp = history; hp; hp = hp->next) {
2050 entries++;
2051 if (in_progress) {
2052 progress++;
2053 if (hp->state != st_done && hp->state != st_failed) {
2054 when = time(NULL);
2055 }
2056
2057 } else if (hp->state == st_done) {
2058 completed++;
2059 if (hp->completed > when) {
2060 when = hp->completed;
2061 }
2062 }
2063 }
2064
2065 stonith_history_free(history);
2066
2067 if(rc == pcmk_ok) {
2068 api_log(LOG_INFO, "Found %d entries for %u/%s: %d in progress, %d completed", entries, nodeid, uname, progress, completed);
2069 } else {
2070 api_log(LOG_ERR, "Could not retrieve fence history for %u/%s: %s (%d)", nodeid, uname, pcmk_strerror(rc), rc);
2071 }
2072 }
2073
2074 stonith_api_delete(st);
2075
2076 if(when) {
2077 api_log(LOG_INFO, "Node %u/%s last kicked at: %ld", nodeid, uname, (long int)when);
2078 }
2079 return when;
2080 }
2081
2082 bool
2083 stonith_agent_exists(const char *agent, int timeout)
2084 {
2085 stonith_t *st = NULL;
2086 stonith_key_value_t *devices = NULL;
2087 stonith_key_value_t *dIter = NULL;
2088 bool rc = FALSE;
2089
2090 if (agent == NULL) {
2091 return rc;
2092 }
2093
2094 st = stonith_api_new();
2095 if (st == NULL) {
2096 crm_err("Could not list fence agents: API memory allocation failed");
2097 return FALSE;
2098 }
2099 st->cmds->list_agents(st, st_opt_sync_call, NULL, &devices, timeout == 0 ? 120 : timeout);
2100
2101 for (dIter = devices; dIter != NULL; dIter = dIter->next) {
2102 if (pcmk__str_eq(dIter->value, agent, pcmk__str_none)) {
2103 rc = TRUE;
2104 break;
2105 }
2106 }
2107
2108 stonith_key_value_freeall(devices, 1, 1);
2109 stonith_api_delete(st);
2110 return rc;
2111 }
2112
2113 const char *
2114 stonith_action_str(const char *action)
2115 {
2116 if (action == NULL) {
2117 return "fencing";
2118 } else if (strcmp(action, PCMK_ACTION_ON) == 0) {
2119 return "unfencing";
2120 } else if (strcmp(action, PCMK_ACTION_OFF) == 0) {
2121 return "turning off";
2122 } else {
2123 return action;
2124 }
2125 }
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135 static void
2136 parse_list_line(const char *line, int len, GList **output)
2137 {
2138 size_t i = 0;
2139 size_t entry_start = 0;
2140
2141
2142
2143
2144
2145 if (strstr(line, "invalid") || strstr(line, "variable")) {
2146 crm_debug("Skipping list output line: %s", line);
2147 return;
2148 }
2149
2150
2151 for (i = 0; i <= len; i++) {
2152
2153 if (isspace(line[i]) || (line[i] == ',') || (line[i] == ';')
2154 || (line[i] == '\0')) {
2155
2156
2157 int rc = 0;
2158 char *entry = NULL;
2159
2160 if (i == entry_start) {
2161
2162 entry_start = i + 1;
2163 continue;
2164 }
2165
2166 entry = pcmk__assert_alloc(i - entry_start + 1, sizeof(char));
2167
2168
2169
2170
2171
2172 rc = sscanf(line + entry_start, "%[a-zA-Z0-9_-.]", entry);
2173 if (rc != 1) {
2174 crm_warn("Could not parse list output entry: %s "
2175 CRM_XS " entry_start=%d position=%d",
2176 line + entry_start, entry_start, i);
2177 free(entry);
2178
2179 } else if (pcmk__strcase_any_of(entry, PCMK_ACTION_ON,
2180 PCMK_ACTION_OFF, NULL)) {
2181
2182
2183
2184
2185
2186
2187
2188
2189 free(entry);
2190
2191 } else {
2192
2193 *output = g_list_append(*output, entry);
2194 }
2195 entry_start = i + 1;
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
2221 GList *
2222 stonith__parse_targets(const char *target_spec)
2223 {
2224 GList *targets = NULL;
2225
2226 if (target_spec != NULL) {
2227 size_t out_len = strlen(target_spec);
2228 size_t line_start = 0;
2229
2230 for (size_t i = 0; i <= out_len; ++i) {
2231 if ((target_spec[i] == '\n') || (target_spec[i] == '\0')
2232 || ((target_spec[i] == '\\') && (target_spec[i + 1] == 'n'))) {
2233
2234
2235 int len = i - line_start;
2236
2237 if (len > 0) {
2238 char *line = strndup(target_spec + line_start, len);
2239
2240 line[len] = '\0';
2241 parse_list_line(line, len, &targets);
2242 free(line);
2243 }
2244 if (target_spec[i] == '\\') {
2245 ++i;
2246 }
2247 line_start = i + 1;
2248 }
2249 }
2250 }
2251 return targets;
2252 }
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265 const char *
2266 stonith__later_succeeded(const stonith_history_t *event,
2267 const stonith_history_t *top_history)
2268 {
2269 const char *other = NULL;
2270
2271 for (const stonith_history_t *prev_hp = top_history;
2272 prev_hp != NULL; prev_hp = prev_hp->next) {
2273 if (prev_hp == event) {
2274 break;
2275 }
2276 if ((prev_hp->state == st_done) &&
2277 pcmk__str_eq(event->target, prev_hp->target, pcmk__str_casei) &&
2278 pcmk__str_eq(event->action, prev_hp->action, pcmk__str_none) &&
2279 ((event->completed < prev_hp->completed) ||
2280 ((event->completed == prev_hp->completed) && (event->completed_nsec < prev_hp->completed_nsec)))) {
2281
2282 if ((event->delegate == NULL)
2283 || pcmk__str_eq(event->delegate, prev_hp->delegate,
2284 pcmk__str_casei)) {
2285
2286 return prev_hp->delegate;
2287
2288 } else if (other == NULL) {
2289
2290 other = (prev_hp->delegate == NULL)? "some node" : prev_hp->delegate;
2291 }
2292 }
2293 }
2294 return other;
2295 }
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305 stonith_history_t *
2306 stonith__sort_history(stonith_history_t *history)
2307 {
2308 stonith_history_t *new = NULL, *pending = NULL, *hp, *np, *tmp;
2309
2310 for (hp = history; hp; ) {
2311 tmp = hp->next;
2312 if ((hp->state == st_done) || (hp->state == st_failed)) {
2313
2314 if ((!new) || (hp->completed > new->completed) ||
2315 ((hp->completed == new->completed) && (hp->completed_nsec > new->completed_nsec))) {
2316 hp->next = new;
2317 new = hp;
2318 } else {
2319 np = new;
2320 do {
2321 if ((!np->next) || (hp->completed > np->next->completed) ||
2322 ((hp->completed == np->next->completed) && (hp->completed_nsec > np->next->completed_nsec))) {
2323 hp->next = np->next;
2324 np->next = hp;
2325 break;
2326 }
2327 np = np->next;
2328 } while (1);
2329 }
2330 } else {
2331
2332 hp->next = pending;
2333 pending = hp;
2334 }
2335 hp = tmp;
2336 }
2337
2338
2339 if (pending) {
2340 stonith_history_t *last_pending = pending;
2341
2342 while (last_pending->next) {
2343 last_pending = last_pending->next;
2344 }
2345
2346 last_pending->next = new;
2347 new = pending;
2348 }
2349 return new;
2350 }
2351
2352
2353
2354
2355
2356
2357
2358
2359 const char *
2360 stonith_op_state_str(enum op_state state)
2361 {
2362 switch (state) {
2363 case st_query: return "querying";
2364 case st_exec: return "executing";
2365 case st_done: return "completed";
2366 case st_duplicate: return "duplicate";
2367 case st_failed: return "failed";
2368 }
2369 return "unknown";
2370 }
2371
2372 stonith_history_t *
2373 stonith__first_matching_event(stonith_history_t *history,
2374 bool (*matching_fn)(stonith_history_t *, void *),
2375 void *user_data)
2376 {
2377 for (stonith_history_t *hp = history; hp; hp = hp->next) {
2378 if (matching_fn(hp, user_data)) {
2379 return hp;
2380 }
2381 }
2382
2383 return NULL;
2384 }
2385
2386 bool
2387 stonith__event_state_pending(stonith_history_t *history, void *user_data)
2388 {
2389 return history->state != st_failed && history->state != st_done;
2390 }
2391
2392 bool
2393 stonith__event_state_eq(stonith_history_t *history, void *user_data)
2394 {
2395 return history->state == GPOINTER_TO_INT(user_data);
2396 }
2397
2398 bool
2399 stonith__event_state_neq(stonith_history_t *history, void *user_data)
2400 {
2401 return history->state != GPOINTER_TO_INT(user_data);
2402 }
2403
2404 void
2405 stonith__device_parameter_flags(uint32_t *device_flags, const char *device_name,
2406 xmlNode *metadata)
2407 {
2408 xmlXPathObjectPtr xpath = NULL;
2409 int max = 0;
2410 int lpc = 0;
2411
2412 CRM_CHECK((device_flags != NULL) && (metadata != NULL), return);
2413
2414 xpath = xpath_search(metadata, "//" PCMK_XE_PARAMETER);
2415 max = numXpathResults(xpath);
2416
2417 if (max <= 0) {
2418 freeXpathObject(xpath);
2419 return;
2420 }
2421
2422 for (lpc = 0; lpc < max; lpc++) {
2423 const char *parameter = NULL;
2424 xmlNode *match = getXpathResult(xpath, lpc);
2425
2426 CRM_LOG_ASSERT(match != NULL);
2427 if (match == NULL) {
2428 continue;
2429 }
2430
2431 parameter = crm_element_value(match, PCMK_XA_NAME);
2432
2433 if (pcmk__str_eq(parameter, "plug", pcmk__str_casei)) {
2434 stonith__set_device_flags(*device_flags, device_name,
2435 st_device_supports_parameter_plug);
2436
2437 } else if (pcmk__str_eq(parameter, "port", pcmk__str_casei)) {
2438 stonith__set_device_flags(*device_flags, device_name,
2439 st_device_supports_parameter_port);
2440 }
2441 }
2442
2443 freeXpathObject(xpath);
2444 }
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465 int
2466 stonith__metadata_async(const char *agent, int timeout_sec,
2467 void (*callback)(int pid,
2468 const pcmk__action_result_t *result,
2469 void *user_data),
2470 void *user_data)
2471 {
2472 switch (stonith_get_namespace(agent, NULL)) {
2473 case st_namespace_rhcs:
2474 {
2475 stonith_action_t *action = NULL;
2476 int rc = pcmk_ok;
2477
2478 action = stonith__action_create(agent, PCMK_ACTION_METADATA,
2479 NULL, 0, timeout_sec, NULL,
2480 NULL, NULL);
2481
2482 rc = stonith__execute_async(action, user_data, callback, NULL);
2483 if (rc != pcmk_ok) {
2484 callback(0, stonith__action_result(action), user_data);
2485 stonith__destroy_action(action);
2486 }
2487 return pcmk_legacy2rc(rc);
2488 }
2489
2490 #if HAVE_STONITH_STONITH_H
2491 case st_namespace_lha:
2492
2493 {
2494 pcmk__action_result_t result = {
2495 .exit_status = CRM_EX_OK,
2496 .execution_status = PCMK_EXEC_DONE,
2497 .exit_reason = NULL,
2498 .action_stdout = NULL,
2499 .action_stderr = NULL,
2500 };
2501
2502 stonith__lha_metadata(agent, timeout_sec,
2503 &result.action_stdout);
2504 callback(0, &result, user_data);
2505 pcmk__reset_result(&result);
2506 return pcmk_rc_ok;
2507 }
2508 #endif
2509
2510 default:
2511 {
2512 pcmk__action_result_t result = {
2513 .exit_status = CRM_EX_NOSUCH,
2514 .execution_status = PCMK_EXEC_ERROR_HARD,
2515 .exit_reason = crm_strdup_printf("No such agent '%s'",
2516 agent),
2517 .action_stdout = NULL,
2518 .action_stderr = NULL,
2519 };
2520
2521 callback(0, &result, user_data);
2522 pcmk__reset_result(&result);
2523 return ENOENT;
2524 }
2525 }
2526 }
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536 int
2537 stonith__exit_status(const stonith_callback_data_t *data)
2538 {
2539 if ((data == NULL) || (data->opaque == NULL)) {
2540 return CRM_EX_ERROR;
2541 }
2542 return ((pcmk__action_result_t *) data->opaque)->exit_status;
2543 }
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553 int
2554 stonith__execution_status(const stonith_callback_data_t *data)
2555 {
2556 if ((data == NULL) || (data->opaque == NULL)) {
2557 return PCMK_EXEC_UNKNOWN;
2558 }
2559 return ((pcmk__action_result_t *) data->opaque)->execution_status;
2560 }
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570 const char *
2571 stonith__exit_reason(const stonith_callback_data_t *data)
2572 {
2573 if ((data == NULL) || (data->opaque == NULL)) {
2574 return NULL;
2575 }
2576 return ((pcmk__action_result_t *) data->opaque)->exit_reason;
2577 }
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587 int
2588 stonith__event_exit_status(const stonith_event_t *event)
2589 {
2590 if ((event == NULL) || (event->opaque == NULL)) {
2591 return CRM_EX_ERROR;
2592 } else {
2593 struct event_private *event_private = event->opaque;
2594
2595 return event_private->result.exit_status;
2596 }
2597 }
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607 int
2608 stonith__event_execution_status(const stonith_event_t *event)
2609 {
2610 if ((event == NULL) || (event->opaque == NULL)) {
2611 return PCMK_EXEC_UNKNOWN;
2612 } else {
2613 struct event_private *event_private = event->opaque;
2614
2615 return event_private->result.execution_status;
2616 }
2617 }
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627 const char *
2628 stonith__event_exit_reason(const stonith_event_t *event)
2629 {
2630 if ((event == NULL) || (event->opaque == NULL)) {
2631 return NULL;
2632 } else {
2633 struct event_private *event_private = event->opaque;
2634
2635 return event_private->result.exit_reason;
2636 }
2637 }
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649 char *
2650 stonith__event_description(const stonith_event_t *event)
2651 {
2652
2653 const char *origin = pcmk__s(event->client_origin, "a client");
2654 const char *origin_node = pcmk__s(event->origin, "a node");
2655 const char *executioner = pcmk__s(event->executioner, "the cluster");
2656 const char *device = pcmk__s(event->device, "unknown");
2657 const char *action = pcmk__s(event->action, event->operation);
2658 const char *target = pcmk__s(event->target, "no node");
2659 const char *reason = stonith__event_exit_reason(event);
2660 const char *status;
2661
2662 if (action == NULL) {
2663 action = "(unknown)";
2664 }
2665
2666 if (stonith__event_execution_status(event) != PCMK_EXEC_DONE) {
2667 status = pcmk_exec_status_str(stonith__event_execution_status(event));
2668 } else if (stonith__event_exit_status(event) != CRM_EX_OK) {
2669 status = pcmk_exec_status_str(PCMK_EXEC_ERROR);
2670 } else {
2671 status = crm_exit_str(CRM_EX_OK);
2672 }
2673
2674 if (pcmk__str_eq(event->operation, PCMK__VALUE_ST_NOTIFY_HISTORY,
2675 pcmk__str_none)) {
2676 return crm_strdup_printf("Fencing history may have changed");
2677
2678 } else if (pcmk__str_eq(event->operation, STONITH_OP_DEVICE_ADD,
2679 pcmk__str_none)) {
2680 return crm_strdup_printf("A fencing device (%s) was added", device);
2681
2682 } else if (pcmk__str_eq(event->operation, STONITH_OP_DEVICE_DEL,
2683 pcmk__str_none)) {
2684 return crm_strdup_printf("A fencing device (%s) was removed", device);
2685
2686 } else if (pcmk__str_eq(event->operation, STONITH_OP_LEVEL_ADD,
2687 pcmk__str_none)) {
2688 return crm_strdup_printf("A fencing topology level (%s) was added",
2689 device);
2690
2691 } else if (pcmk__str_eq(event->operation, STONITH_OP_LEVEL_DEL,
2692 pcmk__str_none)) {
2693 return crm_strdup_printf("A fencing topology level (%s) was removed",
2694 device);
2695 }
2696
2697
2698
2699 return crm_strdup_printf("Operation %s of %s by %s for %s@%s: %s%s%s%s (ref=%s)",
2700 action, target, executioner, origin, origin_node,
2701 status,
2702 ((reason == NULL)? "" : " ("), pcmk__s(reason, ""),
2703 ((reason == NULL)? "" : ")"),
2704 pcmk__s(event->id, "(none)"));
2705 }
2706
2707
2708
2709
2710
2711 const char *get_stonith_provider(const char *agent, const char *provider);
2712
2713 const char *
2714 get_stonith_provider(const char *agent, const char *provider)
2715 {
2716 return stonith_namespace2text(stonith_get_namespace(agent, provider));
2717 }
2718
2719
2720
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