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diff --git a/lib/pacemaker/pcmk_fence.c b/lib/pacemaker/pcmk_fence.c
index c74152dceb..10c8442d58 100644
--- a/lib/pacemaker/pcmk_fence.c
+++ b/lib/pacemaker/pcmk_fence.c
@@ -1,615 +1,635 @@
/*
* Copyright 2009-2024 the Pacemaker project contributors
*
* The version control history for this file may have further details.
*
* This source code is licensed under the GNU General Public License version 2
* or later (GPLv2+) WITHOUT ANY WARRANTY.
*/
#include <crm_internal.h>
#include <crm/common/mainloop.h>
#include <crm/common/results.h>
#include <crm/common/output.h>
#include <crm/common/output_internal.h>
#include <crm/stonith-ng.h>
#include <crm/fencing/internal.h> // stonith__*
#include <glib.h>
#include <libxml/tree.h>
#include <pacemaker.h>
#include <pacemaker-internal.h>
static const int st_opts = st_opt_sync_call|st_opt_allow_self_fencing;
static GMainLoop *mainloop = NULL;
static struct {
stonith_t *st;
const char *target;
const char *action;
char *name;
unsigned int timeout;
unsigned int tolerance;
int delay;
pcmk__action_result_t result;
} async_fence_data = { NULL, };
static int
handle_level(stonith_t *st, const char *target, int fence_level,
const stonith_key_value_t *devices, bool added)
{
const char *node = NULL;
const char *pattern = NULL;
const char *name = NULL;
char *value = NULL;
int rc = pcmk_rc_ok;
if (target == NULL) {
// Not really possible, but makes static analysis happy
return EINVAL;
}
/* Determine if targeting by attribute, node name pattern or node name */
value = strchr(target, '=');
if (value != NULL) {
name = target;
*value++ = '\0';
} else if (*target == '@') {
pattern = target + 1;
} else {
node = target;
}
/* Register or unregister level as appropriate */
if (added) {
rc = st->cmds->register_level_full(st, st_opts, node, pattern,
name, value, fence_level,
devices);
} else {
rc = st->cmds->remove_level_full(st, st_opts, node, pattern,
name, value, fence_level);
}
return pcmk_legacy2rc(rc);
}
static stonith_history_t *
reduce_fence_history(stonith_history_t *history)
{
stonith_history_t *new, *hp, *np;
if (!history) {
return history;
}
new = history;
hp = new->next;
new->next = NULL;
while (hp) {
stonith_history_t *hp_next = hp->next;
hp->next = NULL;
for (np = new; ; np = np->next) {
if ((hp->state == st_done) || (hp->state == st_failed)) {
/* action not in progress */
if (pcmk__str_eq(hp->target, np->target, pcmk__str_casei)
&& pcmk__str_eq(hp->action, np->action, pcmk__str_none)
&& (hp->state == np->state)
&& ((hp->state == st_done)
|| pcmk__str_eq(hp->delegate, np->delegate,
pcmk__str_casei))) {
/* purge older hp */
stonith_history_free(hp);
break;
}
}
if (!np->next) {
np->next = hp;
break;
}
}
hp = hp_next;
}
return new;
}
static void
notify_callback(stonith_t * st, stonith_event_t * e)
{
if (pcmk__str_eq(async_fence_data.target, e->target, pcmk__str_casei)
&& pcmk__str_eq(async_fence_data.action, e->action, pcmk__str_none)) {
pcmk__set_result(&async_fence_data.result,
stonith__event_exit_status(e),
stonith__event_execution_status(e),
stonith__event_exit_reason(e));
g_main_loop_quit(mainloop);
}
}
static void
fence_callback(stonith_t * stonith, stonith_callback_data_t * data)
{
pcmk__set_result(&async_fence_data.result, stonith__exit_status(data),
stonith__execution_status(data),
stonith__exit_reason(data));
g_main_loop_quit(mainloop);
}
static gboolean
async_fence_helper(gpointer user_data)
{
stonith_t *st = async_fence_data.st;
int call_id = 0;
int rc = stonith_api_connect_retry(st, async_fence_data.name, 10);
int timeout = 0;
if (rc != pcmk_ok) {
g_main_loop_quit(mainloop);
pcmk__set_result(&async_fence_data.result, CRM_EX_ERROR,
PCMK_EXEC_NOT_CONNECTED, pcmk_strerror(rc));
return TRUE;
}
st->cmds->register_notification(st, PCMK__VALUE_ST_NOTIFY_FENCE,
notify_callback);
call_id = st->cmds->fence_with_delay(st,
st_opt_allow_self_fencing,
async_fence_data.target,
async_fence_data.action,
async_fence_data.timeout/1000,
async_fence_data.tolerance/1000,
async_fence_data.delay);
if (call_id < 0) {
g_main_loop_quit(mainloop);
pcmk__set_result(&async_fence_data.result, CRM_EX_ERROR,
PCMK_EXEC_ERROR, pcmk_strerror(call_id));
return TRUE;
}
timeout = async_fence_data.timeout / 1000;
if (async_fence_data.delay > 0) {
timeout += async_fence_data.delay;
}
st->cmds->register_callback(st, call_id, timeout, st_opt_timeout_updates,
NULL, "callback", fence_callback);
return TRUE;
}
+static int
+setup_fencing(stonith_t **st)
+{
+ int rc = pcmk_rc_ok;
+
+ *st = stonith_api_new();
+ if (*st == NULL) {
+ return ENOMEM;
+ }
+
+ rc = (*st)->cmds->connect(*st, crm_system_name, NULL);
+ if (rc < 0) {
+ rc = pcmk_legacy2rc(rc);
+ stonith_api_delete(*st);
+ *st = NULL;
+ }
+
+ return rc;
+}
+
int
pcmk__request_fencing(stonith_t *st, const char *target, const char *action,
const char *name, unsigned int timeout,
unsigned int tolerance, int delay, char **reason)
{
crm_trigger_t *trig;
int rc = pcmk_rc_ok;
async_fence_data.st = st;
async_fence_data.name = strdup(name);
async_fence_data.target = target;
async_fence_data.action = action;
async_fence_data.timeout = timeout;
async_fence_data.tolerance = tolerance;
async_fence_data.delay = delay;
pcmk__set_result(&async_fence_data.result, CRM_EX_ERROR, PCMK_EXEC_UNKNOWN,
NULL);
trig = mainloop_add_trigger(G_PRIORITY_HIGH, async_fence_helper, NULL);
mainloop_set_trigger(trig);
mainloop = g_main_loop_new(NULL, FALSE);
g_main_loop_run(mainloop);
free(async_fence_data.name);
if (reason != NULL) {
// Give the caller ownership of the exit reason
*reason = async_fence_data.result.exit_reason;
async_fence_data.result.exit_reason = NULL;
}
rc = stonith__result2rc(&async_fence_data.result);
pcmk__reset_result(&async_fence_data.result);
return rc;
}
int
pcmk_request_fencing(stonith_t *st, const char *target, const char *action,
const char *name, unsigned int timeout,
unsigned int tolerance, int delay, char **reason)
{
return pcmk__request_fencing(st, target, action, name, timeout, tolerance,
delay, reason);
}
int
pcmk__fence_history(pcmk__output_t *out, stonith_t *st, const char *target,
unsigned int timeout, int verbose, bool broadcast,
bool cleanup)
{
stonith_history_t *history = NULL, *hp, *latest = NULL;
int rc = pcmk_rc_ok;
int opts = 0;
if (cleanup) {
out->info(out, "cleaning up fencing-history%s%s",
target ? " for node " : "", target ? target : "");
}
if (broadcast) {
out->info(out, "gather fencing-history from all nodes");
}
stonith__set_call_options(opts, target, st_opts);
if (cleanup) {
stonith__set_call_options(opts, target, st_opt_cleanup);
}
if (broadcast) {
stonith__set_call_options(opts, target, st_opt_broadcast);
}
if (pcmk__str_eq(target, "*", pcmk__str_none)) {
target = NULL;
}
rc = st->cmds->history(st, opts, target, &history, (timeout / 1000));
if (cleanup) {
// Cleanup doesn't return a history list
stonith_history_free(history);
return pcmk_legacy2rc(rc);
}
out->begin_list(out, "event", "events", "Fencing history");
history = stonith__sort_history(history);
for (hp = history; hp; hp = hp->next) {
if (hp->state == st_done) {
latest = hp;
}
if (out->is_quiet(out) || !verbose) {
continue;
}
out->message(out, "stonith-event", hp, true, false,
stonith__later_succeeded(hp, history),
(uint32_t) pcmk_show_failed_detail);
out->increment_list(out);
}
if (latest) {
if (out->is_quiet(out)) {
out->message(out, "stonith-event", latest, false, true, NULL,
(uint32_t) pcmk_show_failed_detail);
} else if (!verbose) { // already printed if verbose
out->message(out, "stonith-event", latest, false, false, NULL,
(uint32_t) pcmk_show_failed_detail);
out->increment_list(out);
}
}
out->end_list(out);
stonith_history_free(history);
return pcmk_legacy2rc(rc);
}
int
pcmk_fence_history(xmlNodePtr *xml, stonith_t *st, const char *target,
unsigned int timeout, bool quiet, int verbose,
bool broadcast, bool cleanup)
{
pcmk__output_t *out = NULL;
int rc = pcmk_rc_ok;
rc = pcmk__xml_output_new(&out, xml);
if (rc != pcmk_rc_ok) {
return rc;
}
stonith__register_messages(out);
out->quiet = quiet;
rc = pcmk__fence_history(out, st, target, timeout, verbose, broadcast,
cleanup);
pcmk__xml_output_finish(out, pcmk_rc2exitc(rc), xml);
return rc;
}
int
pcmk__fence_installed(pcmk__output_t *out, stonith_t *st, unsigned int timeout)
{
stonith_key_value_t *devices = NULL;
int rc = pcmk_rc_ok;
rc = st->cmds->list_agents(st, st_opt_sync_call, NULL, &devices,
(timeout / 1000));
// rc is a negative error code or a positive number of agents
if (rc < 0) {
return pcmk_legacy2rc(rc);
}
out->begin_list(out, "fence device", "fence devices",
"Installed fence devices");
for (stonith_key_value_t *iter = devices; iter != NULL; iter = iter->next) {
out->list_item(out, "device", "%s", iter->value);
}
out->end_list(out);
stonith_key_value_freeall(devices, 1, 1);
return pcmk_rc_ok;
}
int
pcmk_fence_installed(xmlNodePtr *xml, stonith_t *st, unsigned int timeout)
{
pcmk__output_t *out = NULL;
int rc = pcmk_rc_ok;
rc = pcmk__xml_output_new(&out, xml);
if (rc != pcmk_rc_ok) {
return rc;
}
stonith__register_messages(out);
rc = pcmk__fence_installed(out, st, timeout);
pcmk__xml_output_finish(out, pcmk_rc2exitc(rc), xml);
return rc;
}
int
pcmk__fence_last(pcmk__output_t *out, const char *target, bool as_nodeid)
{
time_t when = 0;
if (target == NULL) {
return pcmk_rc_ok;
}
if (as_nodeid) {
when = stonith_api_time(atol(target), NULL, FALSE);
} else {
when = stonith_api_time(0, target, FALSE);
}
return out->message(out, "last-fenced", target, when);
}
int
pcmk_fence_last(xmlNodePtr *xml, const char *target, bool as_nodeid)
{
pcmk__output_t *out = NULL;
int rc = pcmk_rc_ok;
rc = pcmk__xml_output_new(&out, xml);
if (rc != pcmk_rc_ok) {
return rc;
}
stonith__register_messages(out);
rc = pcmk__fence_last(out, target, as_nodeid);
pcmk__xml_output_finish(out, pcmk_rc2exitc(rc), xml);
return rc;
}
int
pcmk__fence_list_targets(pcmk__output_t *out, stonith_t *st,
const char *device_id, unsigned int timeout)
{
GList *targets = NULL;
char *lists = NULL;
int rc = pcmk_rc_ok;
rc = st->cmds->list(st, st_opts, device_id, &lists, timeout/1000);
if (rc != pcmk_rc_ok) {
return pcmk_legacy2rc(rc);
}
targets = stonith__parse_targets(lists);
out->begin_list(out, "fence target", "fence targets", "Fence Targets");
while (targets != NULL) {
out->list_item(out, NULL, "%s", (const char *) targets->data);
targets = targets->next;
}
out->end_list(out);
free(lists);
return rc;
}
int
pcmk_fence_list_targets(xmlNodePtr *xml, stonith_t *st, const char *device_id,
unsigned int timeout)
{
pcmk__output_t *out = NULL;
int rc = pcmk_rc_ok;
rc = pcmk__xml_output_new(&out, xml);
if (rc != pcmk_rc_ok) {
return rc;
}
stonith__register_messages(out);
rc = pcmk__fence_list_targets(out, st, device_id, timeout);
pcmk__xml_output_finish(out, pcmk_rc2exitc(rc), xml);
return rc;
}
int
pcmk__fence_metadata(pcmk__output_t *out, stonith_t *st, const char *agent,
unsigned int timeout)
{
char *buffer = NULL;
int rc = st->cmds->metadata(st, st_opt_sync_call, agent, NULL, &buffer,
timeout/1000);
if (rc != pcmk_rc_ok) {
return pcmk_legacy2rc(rc);
}
out->output_xml(out, PCMK_XE_METADATA, buffer);
free(buffer);
return rc;
}
int
pcmk_fence_metadata(xmlNodePtr *xml, stonith_t *st, const char *agent,
unsigned int timeout)
{
pcmk__output_t *out = NULL;
int rc = pcmk_rc_ok;
rc = pcmk__xml_output_new(&out, xml);
if (rc != pcmk_rc_ok) {
return rc;
}
stonith__register_messages(out);
rc = pcmk__fence_metadata(out, st, agent, timeout);
pcmk__xml_output_finish(out, pcmk_rc2exitc(rc), xml);
return rc;
}
int
pcmk__fence_registered(pcmk__output_t *out, stonith_t *st, const char *target,
unsigned int timeout)
{
stonith_key_value_t *devices = NULL;
int rc = pcmk_rc_ok;
rc = st->cmds->query(st, st_opts, target, &devices, timeout/1000);
/* query returns a negative error code or a positive number of results. */
if (rc < 0) {
return pcmk_legacy2rc(rc);
}
out->begin_list(out, "fence device", "fence devices",
"Registered fence devices");
for (stonith_key_value_t *iter = devices; iter != NULL; iter = iter->next) {
out->list_item(out, "device", "%s", iter->value);
}
out->end_list(out);
stonith_key_value_freeall(devices, 1, 1);
/* Return pcmk_rc_ok here, not the number of results. Callers probably
* don't care.
*/
return pcmk_rc_ok;
}
int
pcmk_fence_registered(xmlNodePtr *xml, stonith_t *st, const char *target,
unsigned int timeout)
{
pcmk__output_t *out = NULL;
int rc = pcmk_rc_ok;
rc = pcmk__xml_output_new(&out, xml);
if (rc != pcmk_rc_ok) {
return rc;
}
stonith__register_messages(out);
rc = pcmk__fence_registered(out, st, target, timeout);
pcmk__xml_output_finish(out, pcmk_rc2exitc(rc), xml);
return rc;
}
int
pcmk__fence_register_level(stonith_t *st, const char *target, int fence_level,
const stonith_key_value_t *devices)
{
return handle_level(st, target, fence_level, devices, true);
}
int
pcmk_fence_register_level(stonith_t *st, const char *target, int fence_level,
const stonith_key_value_t *devices)
{
return pcmk__fence_register_level(st, target, fence_level, devices);
}
int
pcmk__fence_unregister_level(stonith_t *st, const char *target, int fence_level)
{
return handle_level(st, target, fence_level, NULL, false);
}
int
pcmk_fence_unregister_level(stonith_t *st, const char *target, int fence_level)
{
return pcmk__fence_unregister_level(st, target, fence_level);
}
int
pcmk__fence_validate(pcmk__output_t *out, stonith_t *st, const char *agent,
const char *id, const stonith_key_value_t *params,
unsigned int timeout)
{
char *output = NULL;
char *error_output = NULL;
int rc;
rc = st->cmds->validate(st, st_opt_sync_call, id, NULL, agent, params,
timeout/1000, &output, &error_output);
out->message(out, "validate", agent, id, output, error_output, rc);
return pcmk_legacy2rc(rc);
}
int
pcmk_fence_validate(xmlNodePtr *xml, stonith_t *st, const char *agent,
const char *id, const stonith_key_value_t *params,
unsigned int timeout)
{
pcmk__output_t *out = NULL;
int rc = pcmk_rc_ok;
rc = pcmk__xml_output_new(&out, xml);
if (rc != pcmk_rc_ok) {
return rc;
}
stonith__register_messages(out);
rc = pcmk__fence_validate(out, st, agent, id, params, timeout);
pcmk__xml_output_finish(out, pcmk_rc2exitc(rc), xml);
return rc;
}
int
pcmk__get_fencing_history(stonith_t *st, stonith_history_t **stonith_history,
enum pcmk__fence_history fence_history)
{
int rc = pcmk_rc_ok;
if ((st == NULL) || (st->state == stonith_disconnected)) {
rc = ENOTCONN;
} else if (fence_history != pcmk__fence_history_none) {
rc = st->cmds->history(st, st_opt_sync_call, NULL, stonith_history,
120);
rc = pcmk_legacy2rc(rc);
if (rc != pcmk_rc_ok) {
return rc;
}
*stonith_history = stonith__sort_history(*stonith_history);
if (fence_history == pcmk__fence_history_reduced) {
*stonith_history = reduce_fence_history(*stonith_history);
}
}
return rc;
}

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