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diff --git a/daemons/fenced/fenced_commands.c b/daemons/fenced/fenced_commands.c
index f34cb4f136..7685cb8c37 100644
--- a/daemons/fenced/fenced_commands.c
+++ b/daemons/fenced/fenced_commands.c
@@ -1,3229 +1,3224 @@
/*
* Copyright 2009-2021 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 <sys/param.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include <unistd.h>
#include <sys/utsname.h>
#include <stdlib.h>
#include <errno.h>
#include <fcntl.h>
#include <ctype.h>
#include <crm/crm.h>
#include <crm/msg_xml.h>
#include <crm/common/ipc.h>
#include <crm/common/ipc_internal.h>
#include <crm/cluster/internal.h>
#include <crm/common/mainloop.h>
#include <crm/stonith-ng.h>
#include <crm/fencing/internal.h>
#include <crm/common/xml.h>
#include <pacemaker-fenced.h>
GHashTable *device_list = NULL;
GHashTable *topology = NULL;
GList *cmd_list = NULL;
struct device_search_s {
/* target of fence action */
char *host;
/* requested fence action */
char *action;
/* timeout to use if a device is queried dynamically for possible targets */
int per_device_timeout;
/* number of registered fencing devices at time of request */
int replies_needed;
/* number of device replies received so far */
int replies_received;
/* whether the target is eligible to perform requested action (or off) */
bool allow_suicide;
/* private data to pass to search callback function */
void *user_data;
/* function to call when all replies have been received */
void (*callback) (GList * devices, void *user_data);
/* devices capable of performing requested action (or off if remapping) */
GList *capable;
};
static gboolean stonith_device_dispatch(gpointer user_data);
static void st_child_done(int pid, const pcmk__action_result_t *result,
void *user_data);
static void stonith_send_reply(xmlNode * reply, int call_options, const char *remote_peer,
const char *client_id);
static void search_devices_record_result(struct device_search_s *search, const char *device,
gboolean can_fence);
static int get_agent_metadata(const char *agent, xmlNode **metadata);
static void read_action_metadata(stonith_device_t *device);
typedef struct async_command_s {
int id;
int pid;
int fd_stdout;
int options;
int default_timeout; /* seconds */
int timeout; /* seconds */
int start_delay; /* seconds */
int delay_id;
char *op;
char *origin;
char *client;
char *client_name;
char *remote_op_id;
char *victim;
uint32_t victim_nodeid;
char *action;
char *device;
GList *device_list;
GList *device_next;
void *internal_user_data;
void (*done_cb) (int pid, const pcmk__action_result_t *result,
void *user_data);
guint timer_sigterm;
guint timer_sigkill;
/*! If the operation timed out, this is the last signal
* we sent to the process to get it to terminate */
int last_timeout_signo;
stonith_device_t *active_on;
stonith_device_t *activating_on;
} async_command_t;
static xmlNode *construct_async_reply(async_command_t *cmd,
const pcmk__action_result_t *result);
static gboolean
is_action_required(const char *action, stonith_device_t *device)
{
return device && device->automatic_unfencing && pcmk__str_eq(action, "on",
pcmk__str_casei);
}
static int
get_action_delay_max(stonith_device_t * device, const char * action)
{
const char *value = NULL;
int delay_max = 0;
if (!pcmk__is_fencing_action(action)) {
return 0;
}
value = g_hash_table_lookup(device->params, PCMK_STONITH_DELAY_MAX);
if (value) {
delay_max = crm_parse_interval_spec(value) / 1000;
}
return delay_max;
}
static int
get_action_delay_base(stonith_device_t *device, const char *action, const char *victim)
{
char *hash_value = NULL;
int delay_base = 0;
if (!pcmk__is_fencing_action(action)) {
return 0;
}
hash_value = g_hash_table_lookup(device->params, PCMK_STONITH_DELAY_BASE);
if (hash_value) {
char *value = strdup(hash_value);
char *valptr = value;
CRM_ASSERT(value != NULL);
if (victim) {
for (char *val = strtok(value, "; \t"); val != NULL; val = strtok(NULL, "; \t")) {
char *mapval = strchr(val, ':');
if (mapval == NULL || mapval[1] == 0) {
crm_err("pcmk_delay_base: empty value in mapping", val);
continue;
}
if (mapval != val && strncasecmp(victim, val, (size_t)(mapval - val)) == 0) {
value = mapval + 1;
crm_debug("pcmk_delay_base mapped to %s for %s", value, victim);
break;
}
}
}
if (strchr(value, ':') == 0) {
delay_base = crm_parse_interval_spec(value) / 1000;
}
free(valptr);
}
return delay_base;
}
/*!
* \internal
* \brief Override STONITH timeout with pcmk_*_timeout if available
*
* \param[in] device STONITH device to use
* \param[in] action STONITH action name
* \param[in] default_timeout Timeout to use if device does not have
* a pcmk_*_timeout parameter for action
*
* \return Value of pcmk_(action)_timeout if available, otherwise default_timeout
* \note For consistency, it would be nice if reboot/off/on timeouts could be
* set the same way as start/stop/monitor timeouts, i.e. with an
* <operation> entry in the fencing resource configuration. However that
* is insufficient because fencing devices may be registered directly via
* the fencer's register_device() API instead of going through the CIB
* (e.g. stonith_admin uses it for its -R option, and the executor uses it
* to ensure a device is registered when a command is issued). As device
* properties, pcmk_*_timeout parameters can be grabbed by the fencer when
* the device is registered, whether by CIB change or API call.
*/
static int
get_action_timeout(stonith_device_t * device, const char *action, int default_timeout)
{
if (action && device && device->params) {
char buffer[64] = { 0, };
const char *value = NULL;
/* If "reboot" was requested but the device does not support it,
* we will remap to "off", so check timeout for "off" instead
*/
if (pcmk__str_eq(action, "reboot", pcmk__str_casei)
&& !pcmk_is_set(device->flags, st_device_supports_reboot)) {
crm_trace("%s doesn't support reboot, using timeout for off instead",
device->id);
action = "off";
}
/* If the device config specified an action-specific timeout, use it */
snprintf(buffer, sizeof(buffer), "pcmk_%s_timeout", action);
value = g_hash_table_lookup(device->params, buffer);
if (value) {
return atoi(value);
}
}
return default_timeout;
}
static void
free_async_command(async_command_t * cmd)
{
if (!cmd) {
return;
}
if (cmd->delay_id) {
g_source_remove(cmd->delay_id);
}
cmd_list = g_list_remove(cmd_list, cmd);
g_list_free_full(cmd->device_list, free);
free(cmd->device);
free(cmd->action);
free(cmd->victim);
free(cmd->remote_op_id);
free(cmd->client);
free(cmd->client_name);
free(cmd->origin);
free(cmd->op);
free(cmd);
}
static async_command_t *
create_async_command(xmlNode * msg)
{
async_command_t *cmd = NULL;
xmlNode *op = get_xpath_object("//@" F_STONITH_ACTION, msg, LOG_ERR);
const char *action = crm_element_value(op, F_STONITH_ACTION);
CRM_CHECK(action != NULL, crm_log_xml_warn(msg, "NoAction"); return NULL);
crm_log_xml_trace(msg, "Command");
cmd = calloc(1, sizeof(async_command_t));
crm_element_value_int(msg, F_STONITH_CALLID, &(cmd->id));
crm_element_value_int(msg, F_STONITH_CALLOPTS, &(cmd->options));
crm_element_value_int(msg, F_STONITH_TIMEOUT, &(cmd->default_timeout));
cmd->timeout = cmd->default_timeout;
// Value -1 means disable any static/random fencing delays
crm_element_value_int(msg, F_STONITH_DELAY, &(cmd->start_delay));
cmd->origin = crm_element_value_copy(msg, F_ORIG);
cmd->remote_op_id = crm_element_value_copy(msg, F_STONITH_REMOTE_OP_ID);
cmd->client = crm_element_value_copy(msg, F_STONITH_CLIENTID);
cmd->client_name = crm_element_value_copy(msg, F_STONITH_CLIENTNAME);
cmd->op = crm_element_value_copy(msg, F_STONITH_OPERATION);
cmd->action = strdup(action);
cmd->victim = crm_element_value_copy(op, F_STONITH_TARGET);
cmd->device = crm_element_value_copy(op, F_STONITH_DEVICE);
CRM_CHECK(cmd->op != NULL, crm_log_xml_warn(msg, "NoOp"); free_async_command(cmd); return NULL);
CRM_CHECK(cmd->client != NULL, crm_log_xml_warn(msg, "NoClient"));
cmd->done_cb = st_child_done;
cmd_list = g_list_append(cmd_list, cmd);
return cmd;
}
static int
get_action_limit(stonith_device_t * device)
{
const char *value = NULL;
int action_limit = 1;
value = g_hash_table_lookup(device->params, PCMK_STONITH_ACTION_LIMIT);
if ((value == NULL)
|| (pcmk__scan_min_int(value, &action_limit, INT_MIN) != pcmk_rc_ok)
|| (action_limit == 0)) {
action_limit = 1;
}
return action_limit;
}
static int
get_active_cmds(stonith_device_t * device)
{
int counter = 0;
GList *gIter = NULL;
GList *gIterNext = NULL;
CRM_CHECK(device != NULL, return 0);
for (gIter = cmd_list; gIter != NULL; gIter = gIterNext) {
async_command_t *cmd = gIter->data;
gIterNext = gIter->next;
if (cmd->active_on == device) {
counter++;
}
}
return counter;
}
static void
fork_cb(int pid, void *user_data)
{
async_command_t *cmd = (async_command_t *) user_data;
stonith_device_t * device =
/* in case of a retry we've done the move from
activating_on to active_on already
*/
cmd->activating_on?cmd->activating_on:cmd->active_on;
CRM_ASSERT(device);
crm_debug("Operation '%s' [%d]%s%s using %s now running with %ds timeout",
cmd->action, pid,
((cmd->victim == NULL)? "" : " targeting "),
((cmd->victim == NULL)? "" : cmd->victim),
device->id, cmd->timeout);
cmd->active_on = device;
cmd->activating_on = NULL;
}
static int
get_agent_metadata_cb(gpointer data) {
stonith_device_t *device = data;
guint period_ms;
switch (get_agent_metadata(device->agent, &device->agent_metadata)) {
case pcmk_rc_ok:
if (device->agent_metadata) {
read_action_metadata(device);
stonith__device_parameter_flags(&(device->flags), device->id,
device->agent_metadata);
}
return G_SOURCE_REMOVE;
case EAGAIN:
period_ms = pcmk__mainloop_timer_get_period(device->timer);
if (period_ms < 160 * 1000) {
mainloop_timer_set_period(device->timer, 2 * period_ms);
}
return G_SOURCE_CONTINUE;
default:
return G_SOURCE_REMOVE;
}
}
/*!
* \internal
* \brief Call a command's action callback for an internal (not library) result
*
* \param[in] cmd Command to report result for
* \param[in] execution_status Execution status to use for result
* \param[in] exit_status Exit status to use for result
* \param[in] exit_reason Exit reason to use for result
*/
static void
report_internal_result(async_command_t *cmd, int exit_status,
int execution_status, const char *exit_reason)
{
pcmk__action_result_t result = PCMK__UNKNOWN_RESULT;
pcmk__set_result(&result, exit_status, execution_status, exit_reason);
cmd->done_cb(0, &result, cmd);
pcmk__reset_result(&result);
}
static gboolean
stonith_device_execute(stonith_device_t * device)
{
int exec_rc = 0;
const char *action_str = NULL;
const char *host_arg = NULL;
async_command_t *cmd = NULL;
stonith_action_t *action = NULL;
int active_cmds = 0;
int action_limit = 0;
GList *gIter = NULL;
GList *gIterNext = NULL;
CRM_CHECK(device != NULL, return FALSE);
active_cmds = get_active_cmds(device);
action_limit = get_action_limit(device);
if (action_limit > -1 && active_cmds >= action_limit) {
crm_trace("%s is over its action limit of %d (%u active action%s)",
device->id, action_limit, active_cmds,
pcmk__plural_s(active_cmds));
return TRUE;
}
for (gIter = device->pending_ops; gIter != NULL; gIter = gIterNext) {
async_command_t *pending_op = gIter->data;
gIterNext = gIter->next;
if (pending_op && pending_op->delay_id) {
crm_trace("Operation '%s'%s%s using %s was asked to run too early, "
"waiting for start delay of %ds",
pending_op->action,
((pending_op->victim == NULL)? "" : " targeting "),
((pending_op->victim == NULL)? "" : pending_op->victim),
device->id, pending_op->start_delay);
continue;
}
device->pending_ops = g_list_remove_link(device->pending_ops, gIter);
g_list_free_1(gIter);
cmd = pending_op;
break;
}
if (cmd == NULL) {
crm_trace("No actions using %s are needed", device->id);
return TRUE;
}
if (pcmk__str_any_of(device->agent, STONITH_WATCHDOG_AGENT,
STONITH_WATCHDOG_AGENT_INTERNAL, NULL)) {
if (pcmk__is_fencing_action(cmd->action)) {
if (node_does_watchdog_fencing(stonith_our_uname)) {
pcmk__panic(__func__);
goto done;
}
} else {
crm_info("Faking success for %s watchdog operation", cmd->action);
report_internal_result(cmd, CRM_EX_OK, PCMK_EXEC_DONE, NULL);
goto done;
}
}
#if SUPPORT_CIBSECRETS
exec_rc = pcmk__substitute_secrets(device->id, device->params);
if (exec_rc != pcmk_rc_ok) {
if (pcmk__str_eq(cmd->action, "stop", pcmk__str_casei)) {
crm_info("Proceeding with stop operation for %s "
"despite being unable to load CIB secrets (%s)",
device->id, pcmk_rc_str(exec_rc));
} else {
crm_err("Considering %s unconfigured "
"because unable to load CIB secrets: %s",
device->id, pcmk_rc_str(exec_rc));
report_internal_result(cmd, CRM_EX_ERROR, PCMK_EXEC_NO_SECRETS,
"Failed to get CIB secrets");
goto done;
}
}
#endif
action_str = cmd->action;
if (pcmk__str_eq(cmd->action, "reboot", pcmk__str_casei)
&& !pcmk_is_set(device->flags, st_device_supports_reboot)) {
crm_notice("Remapping 'reboot' action%s%s using %s to 'off' "
"because agent '%s' does not support reboot",
((cmd->victim == NULL)? "" : " targeting "),
((cmd->victim == NULL)? "" : cmd->victim),
device->id, device->agent);
action_str = "off";
}
if (pcmk_is_set(device->flags, st_device_supports_parameter_port)) {
host_arg = "port";
} else if (pcmk_is_set(device->flags, st_device_supports_parameter_plug)) {
host_arg = "plug";
}
action = stonith_action_create(device->agent,
action_str,
cmd->victim,
cmd->victim_nodeid,
cmd->timeout, device->params,
device->aliases, host_arg);
/* for async exec, exec_rc is negative for early error exit
otherwise handling of success/errors is done via callbacks */
cmd->activating_on = device;
exec_rc = stonith_action_execute_async(action, (void *)cmd,
cmd->done_cb, fork_cb);
if (exec_rc < 0) {
cmd->activating_on = NULL;
cmd->done_cb(0, stonith__action_result(action), cmd);
stonith__destroy_action(action);
}
done:
/* Device might get triggered to work by multiple fencing commands
* simultaneously. Trigger the device again to make sure any
* remaining concurrent commands get executed. */
if (device->pending_ops) {
mainloop_set_trigger(device->work);
}
return TRUE;
}
static gboolean
stonith_device_dispatch(gpointer user_data)
{
return stonith_device_execute(user_data);
}
static gboolean
start_delay_helper(gpointer data)
{
async_command_t *cmd = data;
stonith_device_t *device = NULL;
cmd->delay_id = 0;
device = cmd->device ? g_hash_table_lookup(device_list, cmd->device) : NULL;
if (device) {
mainloop_set_trigger(device->work);
}
return FALSE;
}
static void
schedule_stonith_command(async_command_t * cmd, stonith_device_t * device)
{
int delay_max = 0;
int delay_base = 0;
int requested_delay = cmd->start_delay;
CRM_CHECK(cmd != NULL, return);
CRM_CHECK(device != NULL, return);
if (cmd->device) {
free(cmd->device);
}
if (device->include_nodeid && cmd->victim) {
crm_node_t *node = crm_get_peer(0, cmd->victim);
cmd->victim_nodeid = node->id;
}
cmd->device = strdup(device->id);
cmd->timeout = get_action_timeout(device, cmd->action, cmd->default_timeout);
if (cmd->remote_op_id) {
crm_debug("Scheduling '%s' action%s%s using %s for remote peer %s "
"with op id %.8s and timeout %ds",
cmd->action,
cmd->victim ? " targeting " : "", cmd->victim ? cmd->victim : "",
device->id, cmd->origin, cmd->remote_op_id, cmd->timeout);
} else {
crm_debug("Scheduling '%s' action%s%s using %s for %s with timeout %ds",
cmd->action,
cmd->victim ? " targeting " : "", cmd->victim ? cmd->victim : "",
device->id, cmd->client, cmd->timeout);
}
device->pending_ops = g_list_append(device->pending_ops, cmd);
mainloop_set_trigger(device->work);
// Value -1 means disable any static/random fencing delays
if (requested_delay < 0) {
return;
}
delay_max = get_action_delay_max(device, cmd->action);
delay_base = get_action_delay_base(device, cmd->action, cmd->victim);
if (delay_max == 0) {
delay_max = delay_base;
}
if (delay_max < delay_base) {
crm_warn(PCMK_STONITH_DELAY_BASE " (%ds) is larger than "
PCMK_STONITH_DELAY_MAX " (%ds) for %s using %s "
"(limiting to maximum delay)",
delay_base, delay_max, cmd->action, device->id);
delay_base = delay_max;
}
if (delay_max > 0) {
// coverity[dont_call] We're not using rand() for security
cmd->start_delay +=
((delay_max != delay_base)?(rand() % (delay_max - delay_base)):0)
+ delay_base;
}
if (cmd->start_delay > 0) {
crm_notice("Delaying '%s' action%s%s using %s for %ds " CRM_XS
" timeout=%ds requested_delay=%ds base=%ds max=%ds",
cmd->action,
cmd->victim ? " targeting " : "", cmd->victim ? cmd->victim : "",
device->id, cmd->start_delay, cmd->timeout,
requested_delay, delay_base, delay_max);
cmd->delay_id =
g_timeout_add_seconds(cmd->start_delay, start_delay_helper, cmd);
}
}
static void
free_device(gpointer data)
{
GList *gIter = NULL;
stonith_device_t *device = data;
g_hash_table_destroy(device->params);
g_hash_table_destroy(device->aliases);
for (gIter = device->pending_ops; gIter != NULL; gIter = gIter->next) {
async_command_t *cmd = gIter->data;
crm_warn("Removal of device '%s' purged operation '%s'", device->id, cmd->action);
report_internal_result(cmd, CRM_EX_ERROR, PCMK_EXEC_NO_FENCE_DEVICE,
"Device was removed before action could be executed");
}
g_list_free(device->pending_ops);
g_list_free_full(device->targets, free);
if (device->timer) {
mainloop_timer_stop(device->timer);
mainloop_timer_del(device->timer);
}
mainloop_destroy_trigger(device->work);
free_xml(device->agent_metadata);
free(device->namespace);
free(device->on_target_actions);
free(device->agent);
free(device->id);
free(device);
}
void free_device_list(void)
{
if (device_list != NULL) {
g_hash_table_destroy(device_list);
device_list = NULL;
}
}
void
init_device_list(void)
{
if (device_list == NULL) {
device_list = pcmk__strkey_table(NULL, free_device);
}
}
static GHashTable *
build_port_aliases(const char *hostmap, GList ** targets)
{
char *name = NULL;
int last = 0, lpc = 0, max = 0, added = 0;
GHashTable *aliases = pcmk__strikey_table(free, free);
if (hostmap == NULL) {
return aliases;
}
max = strlen(hostmap);
for (; lpc <= max; lpc++) {
switch (hostmap[lpc]) {
/* Skip escaped chars */
case '\\':
lpc++;
break;
/* Assignment chars */
case '=':
case ':':
if (lpc > last) {
free(name);
name = calloc(1, 1 + lpc - last);
memcpy(name, hostmap + last, lpc - last);
}
last = lpc + 1;
break;
/* Delimeter chars */
/* case ',': Potentially used to specify multiple ports */
case 0:
case ';':
case ' ':
case '\t':
if (name) {
char *value = NULL;
int k = 0;
value = calloc(1, 1 + lpc - last);
memcpy(value, hostmap + last, lpc - last);
for (int i = 0; value[i] != '\0'; i++) {
if (value[i] != '\\') {
value[k++] = value[i];
}
}
value[k] = '\0';
crm_debug("Adding alias '%s'='%s'", name, value);
g_hash_table_replace(aliases, name, value);
if (targets) {
*targets = g_list_append(*targets, strdup(value));
}
value = NULL;
name = NULL;
added++;
} else if (lpc > last) {
crm_debug("Parse error at offset %d near '%s'", lpc - last, hostmap + last);
}
last = lpc + 1;
break;
}
if (hostmap[lpc] == 0) {
break;
}
}
if (added == 0) {
crm_info("No host mappings detected in '%s'", hostmap);
}
free(name);
return aliases;
}
GHashTable *metadata_cache = NULL;
void
free_metadata_cache(void) {
if (metadata_cache != NULL) {
g_hash_table_destroy(metadata_cache);
metadata_cache = NULL;
}
}
static void
init_metadata_cache(void) {
if (metadata_cache == NULL) {
metadata_cache = pcmk__strkey_table(free, free);
}
}
int
get_agent_metadata(const char *agent, xmlNode ** metadata)
{
char *buffer = NULL;
if (metadata == NULL) {
return EINVAL;
}
*metadata = NULL;
if (pcmk__str_eq(agent, STONITH_WATCHDOG_AGENT_INTERNAL, pcmk__str_none)) {
return pcmk_rc_ok;
}
init_metadata_cache();
buffer = g_hash_table_lookup(metadata_cache, agent);
if (buffer == NULL) {
stonith_t *st = stonith_api_new();
int rc;
if (st == NULL) {
crm_warn("Could not get agent meta-data: "
"API memory allocation failed");
return EAGAIN;
}
rc = st->cmds->metadata(st, st_opt_sync_call, agent,
NULL, &buffer, 10);
stonith_api_delete(st);
if (rc || !buffer) {
crm_err("Could not retrieve metadata for fencing agent %s", agent);
return EAGAIN;
}
g_hash_table_replace(metadata_cache, strdup(agent), buffer);
}
*metadata = string2xml(buffer);
return pcmk_rc_ok;
}
static gboolean
is_nodeid_required(xmlNode * xml)
{
xmlXPathObjectPtr xpath = NULL;
if (stand_alone) {
return FALSE;
}
if (!xml) {
return FALSE;
}
xpath = xpath_search(xml, "//parameter[@name='nodeid']");
if (numXpathResults(xpath) <= 0) {
freeXpathObject(xpath);
return FALSE;
}
freeXpathObject(xpath);
return TRUE;
}
#define MAX_ACTION_LEN 256
static char *
add_action(char *actions, const char *action)
{
int offset = 0;
if (actions == NULL) {
actions = calloc(1, MAX_ACTION_LEN);
} else {
offset = strlen(actions);
}
if (offset > 0) {
offset += snprintf(actions+offset, MAX_ACTION_LEN - offset, " ");
}
offset += snprintf(actions+offset, MAX_ACTION_LEN - offset, "%s", action);
return actions;
}
static void
read_action_metadata(stonith_device_t *device)
{
xmlXPathObjectPtr xpath = NULL;
int max = 0;
int lpc = 0;
if (device->agent_metadata == NULL) {
return;
}
xpath = xpath_search(device->agent_metadata, "//action");
max = numXpathResults(xpath);
if (max <= 0) {
freeXpathObject(xpath);
return;
}
for (lpc = 0; lpc < max; lpc++) {
const char *action = NULL;
xmlNode *match = getXpathResult(xpath, lpc);
CRM_LOG_ASSERT(match != NULL);
if(match == NULL) { continue; };
action = crm_element_value(match, "name");
if(pcmk__str_eq(action, "list", pcmk__str_casei)) {
stonith__set_device_flags(device->flags, device->id,
st_device_supports_list);
} else if(pcmk__str_eq(action, "status", pcmk__str_casei)) {
stonith__set_device_flags(device->flags, device->id,
st_device_supports_status);
} else if(pcmk__str_eq(action, "reboot", pcmk__str_casei)) {
stonith__set_device_flags(device->flags, device->id,
st_device_supports_reboot);
} else if (pcmk__str_eq(action, "on", pcmk__str_casei)) {
/* "automatic" means the cluster will unfence node when it joins */
/* "required" is a deprecated synonym for "automatic" */
if (pcmk__xe_attr_is_true(match, "automatic") || pcmk__xe_attr_is_true(match, "required")) {
device->automatic_unfencing = TRUE;
}
}
if (action && pcmk__xe_attr_is_true(match, "on_target")) {
device->on_target_actions = add_action(device->on_target_actions, action);
}
}
freeXpathObject(xpath);
}
/*!
* \internal
* \brief Set a pcmk_*_action parameter if not already set
*
* \param[in,out] params Device parameters
* \param[in] action Name of action
* \param[in] value Value to use if action is not already set
*/
static void
map_action(GHashTable *params, const char *action, const char *value)
{
char *key = crm_strdup_printf("pcmk_%s_action", action);
if (g_hash_table_lookup(params, key)) {
crm_warn("Ignoring %s='%s', see %s instead",
STONITH_ATTR_ACTION_OP, value, key);
free(key);
} else {
crm_warn("Mapping %s='%s' to %s='%s'",
STONITH_ATTR_ACTION_OP, value, key, value);
g_hash_table_insert(params, key, strdup(value));
}
}
/*!
* \internal
* \brief Create device parameter table from XML
*
* \param[in] name Device name (used for logging only)
* \param[in,out] params Device parameters
*/
static GHashTable *
xml2device_params(const char *name, xmlNode *dev)
{
GHashTable *params = xml2list(dev);
const char *value;
/* Action should never be specified in the device configuration,
* but we support it for users who are familiar with other software
* that worked that way.
*/
value = g_hash_table_lookup(params, STONITH_ATTR_ACTION_OP);
if (value != NULL) {
crm_warn("%s has '%s' parameter, which should never be specified in configuration",
name, STONITH_ATTR_ACTION_OP);
if (*value == '\0') {
crm_warn("Ignoring empty '%s' parameter", STONITH_ATTR_ACTION_OP);
} else if (strcmp(value, "reboot") == 0) {
crm_warn("Ignoring %s='reboot' (see stonith-action cluster property instead)",
STONITH_ATTR_ACTION_OP);
} else if (strcmp(value, "off") == 0) {
map_action(params, "reboot", value);
} else {
map_action(params, "off", value);
map_action(params, "reboot", value);
}
g_hash_table_remove(params, STONITH_ATTR_ACTION_OP);
}
return params;
}
static const char *
target_list_type(stonith_device_t * dev)
{
const char *check_type = NULL;
check_type = g_hash_table_lookup(dev->params, PCMK_STONITH_HOST_CHECK);
if (check_type == NULL) {
if (g_hash_table_lookup(dev->params, PCMK_STONITH_HOST_LIST)) {
check_type = "static-list";
} else if (g_hash_table_lookup(dev->params, PCMK_STONITH_HOST_MAP)) {
check_type = "static-list";
} else if (pcmk_is_set(dev->flags, st_device_supports_list)) {
check_type = "dynamic-list";
} else if (pcmk_is_set(dev->flags, st_device_supports_status)) {
check_type = "status";
} else {
check_type = "none";
}
}
return check_type;
}
static stonith_device_t *
build_device_from_xml(xmlNode * msg)
{
const char *value;
xmlNode *dev = get_xpath_object("//" F_STONITH_DEVICE, msg, LOG_ERR);
stonith_device_t *device = NULL;
char *agent = crm_element_value_copy(dev, "agent");
CRM_CHECK(agent != NULL, return device);
device = calloc(1, sizeof(stonith_device_t));
CRM_CHECK(device != NULL, {free(agent); return device;});
device->id = crm_element_value_copy(dev, XML_ATTR_ID);
device->agent = agent;
device->namespace = crm_element_value_copy(dev, "namespace");
device->params = xml2device_params(device->id, dev);
value = g_hash_table_lookup(device->params, PCMK_STONITH_HOST_LIST);
if (value) {
device->targets = stonith__parse_targets(value);
}
value = g_hash_table_lookup(device->params, PCMK_STONITH_HOST_MAP);
device->aliases = build_port_aliases(value, &(device->targets));
value = target_list_type(device);
if (!pcmk__str_eq(value, "static-list", pcmk__str_casei) && device->targets) {
/* Other than "static-list", dev-> targets is unnecessary. */
g_list_free_full(device->targets, free);
device->targets = NULL;
}
switch (get_agent_metadata(device->agent, &device->agent_metadata)) {
case pcmk_rc_ok:
if (device->agent_metadata) {
read_action_metadata(device);
stonith__device_parameter_flags(&(device->flags), device->id,
device->agent_metadata);
}
break;
case EAGAIN:
if (device->timer == NULL) {
device->timer = mainloop_timer_add("get_agent_metadata", 10 * 1000,
TRUE, get_agent_metadata_cb, device);
}
if (!mainloop_timer_running(device->timer)) {
mainloop_timer_start(device->timer);
}
break;
default:
break;
}
value = g_hash_table_lookup(device->params, "nodeid");
if (!value) {
device->include_nodeid = is_nodeid_required(device->agent_metadata);
}
value = crm_element_value(dev, "rsc_provides");
if (pcmk__str_eq(value, "unfencing", pcmk__str_casei)) {
device->automatic_unfencing = TRUE;
}
if (is_action_required("on", device)) {
crm_info("Fencing device '%s' requires unfencing", device->id);
}
if (device->on_target_actions) {
crm_info("Fencing device '%s' requires actions (%s) to be executed "
"on target", device->id, device->on_target_actions);
}
device->work = mainloop_add_trigger(G_PRIORITY_HIGH, stonith_device_dispatch, device);
/* TODO: Hook up priority */
return device;
}
static void
schedule_internal_command(const char *origin,
stonith_device_t * device,
const char *action,
const char *victim,
int timeout,
void *internal_user_data,
void (*done_cb) (int pid,
const pcmk__action_result_t *result,
void *user_data))
{
async_command_t *cmd = NULL;
cmd = calloc(1, sizeof(async_command_t));
cmd->id = -1;
cmd->default_timeout = timeout ? timeout : 60;
cmd->timeout = cmd->default_timeout;
cmd->action = strdup(action);
cmd->victim = victim ? strdup(victim) : NULL;
cmd->device = strdup(device->id);
cmd->origin = strdup(origin);
cmd->client = strdup(crm_system_name);
cmd->client_name = strdup(crm_system_name);
cmd->internal_user_data = internal_user_data;
cmd->done_cb = done_cb; /* cmd, not internal_user_data, is passed to 'done_cb' as the userdata */
schedule_stonith_command(cmd, device);
}
// Fence agent status commands use custom exit status codes
enum fence_status_code {
fence_status_invalid = -1,
fence_status_active = 0,
fence_status_unknown = 1,
fence_status_inactive = 2,
};
static void
status_search_cb(int pid, const pcmk__action_result_t *result, void *user_data)
{
async_command_t *cmd = user_data;
struct device_search_s *search = cmd->internal_user_data;
stonith_device_t *dev = cmd->device ? g_hash_table_lookup(device_list, cmd->device) : NULL;
gboolean can = FALSE;
free_async_command(cmd);
if (!dev) {
search_devices_record_result(search, NULL, FALSE);
return;
}
mainloop_set_trigger(dev->work);
if (result->execution_status != PCMK_EXEC_DONE) {
crm_warn("Assuming %s cannot fence %s "
"because status could not be executed: %s%s%s%s",
dev->id, search->host,
pcmk_exec_status_str(result->execution_status),
((result->exit_reason == NULL)? "" : " ("),
((result->exit_reason == NULL)? "" : result->exit_reason),
((result->exit_reason == NULL)? "" : ")"));
search_devices_record_result(search, dev->id, FALSE);
return;
}
switch (result->exit_status) {
case fence_status_unknown:
crm_trace("%s reported it cannot fence %s", dev->id, search->host);
break;
case fence_status_active:
case fence_status_inactive:
crm_trace("%s reported it can fence %s", dev->id, search->host);
can = TRUE;
break;
default:
crm_warn("Assuming %s cannot fence %s "
"(status returned unknown code %d)",
dev->id, search->host, result->exit_status);
break;
}
search_devices_record_result(search, dev->id, can);
}
static void
dynamic_list_search_cb(int pid, const pcmk__action_result_t *result,
void *user_data)
{
async_command_t *cmd = user_data;
struct device_search_s *search = cmd->internal_user_data;
stonith_device_t *dev = cmd->device ? g_hash_table_lookup(device_list, cmd->device) : NULL;
gboolean can_fence = FALSE;
free_async_command(cmd);
/* Host/alias must be in the list output to be eligible to be fenced
*
* Will cause problems if down'd nodes aren't listed or (for virtual nodes)
* if the guest is still listed despite being moved to another machine
*/
if (!dev) {
search_devices_record_result(search, NULL, FALSE);
return;
}
mainloop_set_trigger(dev->work);
if (pcmk__result_ok(result)) {
crm_info("Refreshing target list for %s", dev->id);
g_list_free_full(dev->targets, free);
dev->targets = stonith__parse_targets(result->action_stdout);
dev->targets_age = time(NULL);
} else if (dev->targets != NULL) {
if (result->execution_status == PCMK_EXEC_DONE) {
crm_info("Reusing most recent target list for %s "
"because list returned error code %d",
dev->id, result->exit_status);
} else {
crm_info("Reusing most recent target list for %s "
"because list could not be executed: %s%s%s%s",
dev->id, pcmk_exec_status_str(result->execution_status),
((result->exit_reason == NULL)? "" : " ("),
((result->exit_reason == NULL)? "" : result->exit_reason),
((result->exit_reason == NULL)? "" : ")"));
}
} else { // We have never successfully executed list
if (result->execution_status == PCMK_EXEC_DONE) {
crm_warn("Assuming %s cannot fence %s "
"because list returned error code %d",
dev->id, search->host, result->exit_status);
} else {
crm_warn("Assuming %s cannot fence %s "
"because list could not be executed: %s%s%s%s",
dev->id, search->host,
pcmk_exec_status_str(result->execution_status),
((result->exit_reason == NULL)? "" : " ("),
((result->exit_reason == NULL)? "" : result->exit_reason),
((result->exit_reason == NULL)? "" : ")"));
}
/* Fall back to pcmk_host_check="status" if the user didn't explicitly
* specify "dynamic-list".
*/
if (g_hash_table_lookup(dev->params, PCMK_STONITH_HOST_CHECK) == NULL) {
crm_notice("Switching to pcmk_host_check='status' for %s", dev->id);
g_hash_table_replace(dev->params, strdup(PCMK_STONITH_HOST_CHECK),
strdup("status"));
}
}
if (dev->targets) {
const char *alias = g_hash_table_lookup(dev->aliases, search->host);
if (!alias) {
alias = search->host;
}
if (pcmk__str_in_list(alias, dev->targets, pcmk__str_casei)) {
can_fence = TRUE;
}
}
search_devices_record_result(search, dev->id, can_fence);
}
/*!
* \internal
* \brief Returns true if any key in first is not in second or second has a different value for key
*/
static int
device_params_diff(GHashTable *first, GHashTable *second) {
char *key = NULL;
char *value = NULL;
GHashTableIter gIter;
g_hash_table_iter_init(&gIter, first);
while (g_hash_table_iter_next(&gIter, (void **)&key, (void **)&value)) {
if(strstr(key, "CRM_meta") == key) {
continue;
} else if(strcmp(key, "crm_feature_set") == 0) {
continue;
} else {
char *other_value = g_hash_table_lookup(second, key);
if (!other_value || !pcmk__str_eq(other_value, value, pcmk__str_casei)) {
crm_trace("Different value for %s: %s != %s", key, other_value, value);
return 1;
}
}
}
return 0;
}
/*!
* \internal
* \brief Checks to see if an identical device already exists in the device_list
*/
static stonith_device_t *
device_has_duplicate(stonith_device_t * device)
{
stonith_device_t *dup = g_hash_table_lookup(device_list, device->id);
if (!dup) {
crm_trace("No match for %s", device->id);
return NULL;
} else if (!pcmk__str_eq(dup->agent, device->agent, pcmk__str_casei)) {
crm_trace("Different agent: %s != %s", dup->agent, device->agent);
return NULL;
}
/* Use calculate_operation_digest() here? */
if (device_params_diff(device->params, dup->params) ||
device_params_diff(dup->params, device->params)) {
return NULL;
}
crm_trace("Match");
return dup;
}
int
stonith_device_register(xmlNode * msg, const char **desc, gboolean from_cib)
{
stonith_device_t *dup = NULL;
stonith_device_t *device = build_device_from_xml(msg);
guint ndevices = 0;
int rv = pcmk_ok;
CRM_CHECK(device != NULL, return -ENOMEM);
/* do we have a watchdog-device? */
if (pcmk__str_eq(device->id, STONITH_WATCHDOG_ID, pcmk__str_none) ||
pcmk__str_any_of(device->agent, STONITH_WATCHDOG_AGENT,
STONITH_WATCHDOG_AGENT_INTERNAL, NULL)) do {
if (stonith_watchdog_timeout_ms <= 0) {
crm_err("Ignoring watchdog fence device without "
"stonith-watchdog-timeout set.");
rv = -ENODEV;
/* fall through to cleanup & return */
} else if (!pcmk__str_any_of(device->agent, STONITH_WATCHDOG_AGENT,
STONITH_WATCHDOG_AGENT_INTERNAL, NULL)) {
crm_err("Ignoring watchdog fence device with unknown "
"agent '%s' unequal '" STONITH_WATCHDOG_AGENT "'.",
device->agent?device->agent:"");
rv = -ENODEV;
/* fall through to cleanup & return */
} else if (!pcmk__str_eq(device->id, STONITH_WATCHDOG_ID,
pcmk__str_none)) {
crm_err("Ignoring watchdog fence device "
"named %s !='"STONITH_WATCHDOG_ID"'.",
device->id?device->id:"");
rv = -ENODEV;
/* fall through to cleanup & return */
} else {
if (pcmk__str_eq(device->agent, STONITH_WATCHDOG_AGENT,
pcmk__str_none)) {
/* this either has an empty list or the targets
configured for watchdog-fencing
*/
g_list_free_full(stonith_watchdog_targets, free);
stonith_watchdog_targets = device->targets;
device->targets = NULL;
}
if (node_does_watchdog_fencing(stonith_our_uname)) {
g_list_free_full(device->targets, free);
device->targets = stonith__parse_targets(stonith_our_uname);
g_hash_table_replace(device->params,
strdup(PCMK_STONITH_HOST_LIST),
strdup(stonith_our_uname));
/* proceed as with any other stonith-device */
break;
}
crm_debug("Skip registration of watchdog fence device on node not in host-list.");
/* cleanup and fall through to more cleanup and return */
device->targets = NULL;
stonith_device_remove(device->id, from_cib);
}
free_device(device);
return rv;
} while (0);
dup = device_has_duplicate(device);
if (dup) {
ndevices = g_hash_table_size(device_list);
crm_debug("Device '%s' already in device list (%d active device%s)",
device->id, ndevices, pcmk__plural_s(ndevices));
free_device(device);
device = dup;
dup = g_hash_table_lookup(device_list, device->id);
dup->dirty = FALSE;
} else {
stonith_device_t *old = g_hash_table_lookup(device_list, device->id);
if (from_cib && old && old->api_registered) {
/* If the cib is writing over an entry that is shared with a stonith client,
* copy any pending ops that currently exist on the old entry to the new one.
* Otherwise the pending ops will be reported as failures
*/
crm_info("Overwriting existing entry for %s from CIB", device->id);
device->pending_ops = old->pending_ops;
device->api_registered = TRUE;
old->pending_ops = NULL;
if (device->pending_ops) {
mainloop_set_trigger(device->work);
}
}
g_hash_table_replace(device_list, device->id, device);
ndevices = g_hash_table_size(device_list);
crm_notice("Added '%s' to device list (%d active device%s)",
device->id, ndevices, pcmk__plural_s(ndevices));
}
if (desc) {
*desc = device->id;
}
if (from_cib) {
device->cib_registered = TRUE;
} else {
device->api_registered = TRUE;
}
return pcmk_ok;
}
void
stonith_device_remove(const char *id, bool from_cib)
{
stonith_device_t *device = g_hash_table_lookup(device_list, id);
guint ndevices = 0;
if (!device) {
ndevices = g_hash_table_size(device_list);
crm_info("Device '%s' not found (%d active device%s)",
id, ndevices, pcmk__plural_s(ndevices));
return;
}
if (from_cib) {
device->cib_registered = FALSE;
} else {
device->verified = FALSE;
device->api_registered = FALSE;
}
if (!device->cib_registered && !device->api_registered) {
g_hash_table_remove(device_list, id);
ndevices = g_hash_table_size(device_list);
crm_info("Removed '%s' from device list (%d active device%s)",
id, ndevices, pcmk__plural_s(ndevices));
} else {
crm_trace("Not removing '%s' from device list (%d active) because "
"still registered via:%s%s",
id, g_hash_table_size(device_list),
(device->cib_registered? " cib" : ""),
(device->api_registered? " api" : ""));
}
}
/*!
* \internal
* \brief Return the number of stonith levels registered for a node
*
* \param[in] tp Node's topology table entry
*
* \return Number of non-NULL levels in topology entry
* \note This function is used only for log messages.
*/
static int
count_active_levels(stonith_topology_t * tp)
{
int lpc = 0;
int count = 0;
for (lpc = 0; lpc < ST_LEVEL_MAX; lpc++) {
if (tp->levels[lpc] != NULL) {
count++;
}
}
return count;
}
static void
free_topology_entry(gpointer data)
{
stonith_topology_t *tp = data;
int lpc = 0;
for (lpc = 0; lpc < ST_LEVEL_MAX; lpc++) {
if (tp->levels[lpc] != NULL) {
g_list_free_full(tp->levels[lpc], free);
}
}
free(tp->target);
free(tp->target_value);
free(tp->target_pattern);
free(tp->target_attribute);
free(tp);
}
void
free_topology_list(void)
{
if (topology != NULL) {
g_hash_table_destroy(topology);
topology = NULL;
}
}
void
init_topology_list(void)
{
if (topology == NULL) {
topology = pcmk__strkey_table(NULL, free_topology_entry);
}
}
char *stonith_level_key(xmlNode *level, int mode)
{
if(mode == -1) {
mode = stonith_level_kind(level);
}
switch(mode) {
case 0:
return crm_element_value_copy(level, XML_ATTR_STONITH_TARGET);
case 1:
return crm_element_value_copy(level, XML_ATTR_STONITH_TARGET_PATTERN);
case 2:
{
const char *name = crm_element_value(level, XML_ATTR_STONITH_TARGET_ATTRIBUTE);
const char *value = crm_element_value(level, XML_ATTR_STONITH_TARGET_VALUE);
if(name && value) {
return crm_strdup_printf("%s=%s", name, value);
}
}
default:
return crm_strdup_printf("Unknown-%d-%s", mode, ID(level));
}
}
int stonith_level_kind(xmlNode * level)
{
int mode = 0;
const char *target = crm_element_value(level, XML_ATTR_STONITH_TARGET);
if(target == NULL) {
mode++;
target = crm_element_value(level, XML_ATTR_STONITH_TARGET_PATTERN);
}
if(stand_alone == FALSE && target == NULL) {
mode++;
if(crm_element_value(level, XML_ATTR_STONITH_TARGET_ATTRIBUTE) == NULL) {
mode++;
} else if(crm_element_value(level, XML_ATTR_STONITH_TARGET_VALUE) == NULL) {
mode++;
}
}
return mode;
}
static stonith_key_value_t *
parse_device_list(const char *devices)
{
int lpc = 0;
int max = 0;
int last = 0;
stonith_key_value_t *output = NULL;
if (devices == NULL) {
return output;
}
max = strlen(devices);
for (lpc = 0; lpc <= max; lpc++) {
if (devices[lpc] == ',' || devices[lpc] == 0) {
char *line = strndup(devices + last, lpc - last);
output = stonith_key_value_add(output, NULL, line);
free(line);
last = lpc + 1;
}
}
return output;
}
/*!
* \internal
* \brief Register a STONITH level for a target
*
* Given an XML request specifying the target name, level index, and device IDs
* for the level, this will create an entry for the target in the global topology
* table if one does not already exist, then append the specified device IDs to
* the entry's device list for the specified level.
*
* \param[in] msg XML request for STONITH level registration
* \param[out] desc If not NULL, will be set to string representation ("TARGET[LEVEL]")
*
* \return pcmk_ok on success, -EINVAL if XML does not specify valid level index
*/
int
stonith_level_register(xmlNode *msg, char **desc)
{
int id = 0;
xmlNode *level;
int mode;
char *target;
stonith_topology_t *tp;
stonith_key_value_t *dIter = NULL;
stonith_key_value_t *devices = NULL;
/* Allow the XML here to point to the level tag directly, or wrapped in
* another tag. If directly, don't search by xpath, because it might give
* multiple hits (e.g. if the XML is the CIB).
*/
if (pcmk__str_eq(TYPE(msg), XML_TAG_FENCING_LEVEL, pcmk__str_casei)) {
level = msg;
} else {
level = get_xpath_object("//" XML_TAG_FENCING_LEVEL, msg, LOG_ERR);
}
CRM_CHECK(level != NULL, return -EINVAL);
mode = stonith_level_kind(level);
target = stonith_level_key(level, mode);
crm_element_value_int(level, XML_ATTR_STONITH_INDEX, &id);
if (desc) {
*desc = crm_strdup_printf("%s[%d]", target, id);
}
/* Sanity-check arguments */
if (mode >= 3 || (id <= 0) || (id >= ST_LEVEL_MAX)) {
crm_trace("Could not add %s[%d] (%d) to the topology (%d active entries)", target, id, mode, g_hash_table_size(topology));
free(target);
crm_log_xml_err(level, "Bad topology");
return -EINVAL;
}
/* Find or create topology table entry */
tp = g_hash_table_lookup(topology, target);
if (tp == NULL) {
tp = calloc(1, sizeof(stonith_topology_t));
tp->kind = mode;
tp->target = target;
tp->target_value = crm_element_value_copy(level, XML_ATTR_STONITH_TARGET_VALUE);
tp->target_pattern = crm_element_value_copy(level, XML_ATTR_STONITH_TARGET_PATTERN);
tp->target_attribute = crm_element_value_copy(level, XML_ATTR_STONITH_TARGET_ATTRIBUTE);
g_hash_table_replace(topology, tp->target, tp);
crm_trace("Added %s (%d) to the topology (%d active entries)",
target, mode, g_hash_table_size(topology));
} else {
free(target);
}
if (tp->levels[id] != NULL) {
crm_info("Adding to the existing %s[%d] topology entry",
tp->target, id);
}
devices = parse_device_list(crm_element_value(level, XML_ATTR_STONITH_DEVICES));
for (dIter = devices; dIter; dIter = dIter->next) {
const char *device = dIter->value;
crm_trace("Adding device '%s' for %s[%d]", device, tp->target, id);
tp->levels[id] = g_list_append(tp->levels[id], strdup(device));
}
stonith_key_value_freeall(devices, 1, 1);
{
int nlevels = count_active_levels(tp);
crm_info("Target %s has %d active fencing level%s",
tp->target, nlevels, pcmk__plural_s(nlevels));
}
return pcmk_ok;
}
int
stonith_level_remove(xmlNode *msg, char **desc)
{
int id = -1;
stonith_topology_t *tp;
char *target;
/* Unlike additions, removal requests should always have one level tag */
xmlNode *level = get_xpath_object("//" XML_TAG_FENCING_LEVEL, msg, LOG_ERR);
CRM_CHECK(level != NULL, return -EPROTO);
target = stonith_level_key(level, -1);
crm_element_value_int(level, XML_ATTR_STONITH_INDEX, &id);
CRM_CHECK((id >= 0) && (id < ST_LEVEL_MAX),
crm_log_xml_warn(msg, "invalid level");
free(target);
return -EPROTO);
if (desc) {
*desc = crm_strdup_printf("%s[%d]", target, id);
}
tp = g_hash_table_lookup(topology, target);
if (tp == NULL) {
guint nentries = g_hash_table_size(topology);
crm_info("No fencing topology found for %s (%d active %s)",
target, nentries,
pcmk__plural_alt(nentries, "entry", "entries"));
} else if (id == 0 && g_hash_table_remove(topology, target)) {
guint nentries = g_hash_table_size(topology);
crm_info("Removed all fencing topology entries related to %s "
"(%d active %s remaining)", target, nentries,
pcmk__plural_alt(nentries, "entry", "entries"));
} else if (tp->levels[id] != NULL) {
guint nlevels;
g_list_free_full(tp->levels[id], free);
tp->levels[id] = NULL;
nlevels = count_active_levels(tp);
crm_info("Removed level %d from fencing topology for %s "
"(%d active level%s remaining)",
id, target, nlevels, pcmk__plural_s(nlevels));
}
free(target);
return pcmk_ok;
}
/*!
* \internal
* \brief Schedule an (asynchronous) action directly on a stonith device
*
* Handle a STONITH_OP_EXEC API message by scheduling a requested agent action
* directly on a specified device. Only list, monitor, and status actions are
* expected to use this call, though it should work with any agent command.
*
* \param[in] msg API message XML with desired action
* \param[out] output Unused
*
* \return -EINPROGRESS on success, -errno otherwise
* \note If the action is monitor, the device must be registered via the API
* (CIB registration is not sufficient), because monitor should not be
* possible unless the device is "started" (API registered).
*/
static char *
list_to_string(GList *list, const char *delim, gboolean terminate_with_delim)
{
int max = g_list_length(list);
size_t delim_len = delim?strlen(delim):0;
size_t alloc_size = 1 + (max?((max-1+(terminate_with_delim?1:0))*delim_len):0);
char *rv;
GList *gIter;
for (gIter = list; gIter != NULL; gIter = gIter->next) {
const char *value = (const char *) gIter->data;
alloc_size += strlen(value);
}
rv = calloc(alloc_size, sizeof(char));
if (rv) {
char *pos = rv;
const char *lead_delim = "";
for (gIter = list; gIter != NULL; gIter = gIter->next) {
const char *value = (const char *) gIter->data;
pos = &pos[sprintf(pos, "%s%s", lead_delim, value)];
lead_delim = delim;
}
if (max && terminate_with_delim) {
sprintf(pos, "%s", delim);
}
}
return rv;
}
static int
stonith_device_action(xmlNode * msg, char **output)
{
xmlNode *dev = get_xpath_object("//" F_STONITH_DEVICE, msg, LOG_ERR);
xmlNode *op = get_xpath_object("//@" F_STONITH_ACTION, msg, LOG_ERR);
const char *id = crm_element_value(dev, F_STONITH_DEVICE);
const char *action = crm_element_value(op, F_STONITH_ACTION);
async_command_t *cmd = NULL;
stonith_device_t *device = NULL;
if ((id == NULL) || (action == NULL)) {
crm_info("Malformed API action request: device %s, action %s",
(id? id : "not specified"),
(action? action : "not specified"));
return -EPROTO;
}
if (pcmk__str_eq(id, STONITH_WATCHDOG_ID, pcmk__str_none)) {
if (stonith_watchdog_timeout_ms <= 0) {
return -ENODEV;
} else {
if (pcmk__str_eq(action, "list", pcmk__str_casei)) {
*output = list_to_string(stonith_watchdog_targets, "\n", TRUE);
return pcmk_ok;
} else if (pcmk__str_eq(action, "monitor", pcmk__str_casei)) {
return pcmk_ok;
}
}
}
device = g_hash_table_lookup(device_list, id);
if ((device == NULL)
|| (!device->api_registered && !strcmp(action, "monitor"))) {
// Monitors may run only on "started" (API-registered) devices
crm_info("Ignoring API '%s' action request because device %s not found",
action, id);
return -ENODEV;
}
cmd = create_async_command(msg);
if (cmd == NULL) {
return -EPROTO;
}
schedule_stonith_command(cmd, device);
return -EINPROGRESS;
}
static void
search_devices_record_result(struct device_search_s *search, const char *device, gboolean can_fence)
{
search->replies_received++;
if (can_fence && device) {
search->capable = g_list_append(search->capable, strdup(device));
}
if (search->replies_needed == search->replies_received) {
guint ndevices = g_list_length(search->capable);
crm_debug("Search found %d device%s that can perform '%s' targeting %s",
ndevices, pcmk__plural_s(ndevices),
(search->action? search->action : "unknown action"),
(search->host? search->host : "any node"));
search->callback(search->capable, search->user_data);
free(search->host);
free(search->action);
free(search);
}
}
/*!
* \internal
* \brief Check whether the local host is allowed to execute a fencing action
*
* \param[in] device Fence device to check
* \param[in] action Fence action to check
* \param[in] target Hostname of fence target
* \param[in] allow_suicide Whether self-fencing is allowed for this operation
*
* \return TRUE if local host is allowed to execute action, FALSE otherwise
*/
static gboolean
localhost_is_eligible(const stonith_device_t *device, const char *action,
const char *target, gboolean allow_suicide)
{
gboolean localhost_is_target = pcmk__str_eq(target, stonith_our_uname,
pcmk__str_casei);
if (device && action && device->on_target_actions
&& strstr(device->on_target_actions, action)) {
if (!localhost_is_target) {
crm_trace("Operation '%s' using %s can only be executed for "
"local host, not %s", action, device->id, target);
return FALSE;
}
} else if (localhost_is_target && !allow_suicide) {
crm_trace("'%s' operation does not support self-fencing", action);
return FALSE;
}
return TRUE;
}
static void
can_fence_host_with_device(stonith_device_t * dev, struct device_search_s *search)
{
gboolean can = FALSE;
const char *check_type = NULL;
const char *host = search->host;
const char *alias = NULL;
CRM_LOG_ASSERT(dev != NULL);
if (dev == NULL) {
goto search_report_results;
} else if (host == NULL) {
can = TRUE;
goto search_report_results;
}
/* Short-circuit query if this host is not allowed to perform the action */
if (pcmk__str_eq(search->action, "reboot", pcmk__str_casei)) {
/* A "reboot" *might* get remapped to "off" then "on", so short-circuit
* only if all three are disallowed. If only one or two are disallowed,
* we'll report that with the results. We never allow suicide for
* remapped "on" operations because the host is off at that point.
*/
if (!localhost_is_eligible(dev, "reboot", host, search->allow_suicide)
&& !localhost_is_eligible(dev, "off", host, search->allow_suicide)
&& !localhost_is_eligible(dev, "on", host, FALSE)) {
goto search_report_results;
}
} else if (!localhost_is_eligible(dev, search->action, host,
search->allow_suicide)) {
goto search_report_results;
}
alias = g_hash_table_lookup(dev->aliases, host);
if (alias == NULL) {
alias = host;
}
check_type = target_list_type(dev);
if (pcmk__str_eq(check_type, "none", pcmk__str_casei)) {
can = TRUE;
} else if (pcmk__str_eq(check_type, "static-list", pcmk__str_casei)) {
/* Presence in the hostmap is sufficient
* Only use if all hosts on which the device can be active can always fence all listed hosts
*/
if (pcmk__str_in_list(host, dev->targets, pcmk__str_casei)) {
can = TRUE;
} else if (g_hash_table_lookup(dev->params, PCMK_STONITH_HOST_MAP)
&& g_hash_table_lookup(dev->aliases, host)) {
can = TRUE;
}
} else if (pcmk__str_eq(check_type, "dynamic-list", pcmk__str_casei)) {
time_t now = time(NULL);
if (dev->targets == NULL || dev->targets_age + 60 < now) {
int device_timeout = get_action_timeout(dev, "list", search->per_device_timeout);
if (device_timeout > search->per_device_timeout) {
crm_notice("Since the pcmk_list_timeout(%ds) parameter of %s is larger than stonith-timeout(%ds), timeout may occur",
device_timeout, dev->id, search->per_device_timeout);
}
crm_trace("Running '%s' to check whether %s is eligible to fence %s (%s)",
check_type, dev->id, search->host, search->action);
schedule_internal_command(__func__, dev, "list", NULL,
search->per_device_timeout, search, dynamic_list_search_cb);
/* we'll respond to this search request async in the cb */
return;
}
if (pcmk__str_in_list(alias, dev->targets, pcmk__str_casei)) {
can = TRUE;
}
} else if (pcmk__str_eq(check_type, "status", pcmk__str_casei)) {
int device_timeout = get_action_timeout(dev, check_type, search->per_device_timeout);
if (device_timeout > search->per_device_timeout) {
crm_notice("Since the pcmk_status_timeout(%ds) parameter of %s is larger than stonith-timeout(%ds), timeout may occur",
device_timeout, dev->id, search->per_device_timeout);
}
crm_trace("Running '%s' to check whether %s is eligible to fence %s (%s)",
check_type, dev->id, search->host, search->action);
schedule_internal_command(__func__, dev, "status", search->host,
search->per_device_timeout, search, status_search_cb);
/* we'll respond to this search request async in the cb */
return;
} else {
crm_err("Invalid value for " PCMK_STONITH_HOST_CHECK ": %s", check_type);
check_type = "Invalid " PCMK_STONITH_HOST_CHECK;
}
if (pcmk__str_eq(host, alias, pcmk__str_casei)) {
crm_notice("%s is%s eligible to fence (%s) %s: %s",
dev->id, (can? "" : " not"), search->action, host,
check_type);
} else {
crm_notice("%s is%s eligible to fence (%s) %s (aka. '%s'): %s",
dev->id, (can? "" : " not"), search->action, host, alias,
check_type);
}
search_report_results:
search_devices_record_result(search, dev ? dev->id : NULL, can);
}
static void
search_devices(gpointer key, gpointer value, gpointer user_data)
{
stonith_device_t *dev = value;
struct device_search_s *search = user_data;
can_fence_host_with_device(dev, search);
}
#define DEFAULT_QUERY_TIMEOUT 20
static void
get_capable_devices(const char *host, const char *action, int timeout, bool suicide, void *user_data,
void (*callback) (GList * devices, void *user_data))
{
struct device_search_s *search;
guint ndevices = g_hash_table_size(device_list);
if (ndevices == 0) {
callback(NULL, user_data);
return;
}
search = calloc(1, sizeof(struct device_search_s));
if (!search) {
crm_crit("Cannot search for capable fence devices: %s",
strerror(ENOMEM));
callback(NULL, user_data);
return;
}
search->host = host ? strdup(host) : NULL;
search->action = action ? strdup(action) : NULL;
search->per_device_timeout = timeout;
search->allow_suicide = suicide;
search->callback = callback;
search->user_data = user_data;
/* We are guaranteed this many replies, even if a device is
* unregistered while the search is in progress.
*/
search->replies_needed = ndevices;
crm_debug("Searching %d device%s to see which can execute '%s' targeting %s",
ndevices, pcmk__plural_s(ndevices),
(search->action? search->action : "unknown action"),
(search->host? search->host : "any node"));
g_hash_table_foreach(device_list, search_devices, search);
}
struct st_query_data {
xmlNode *reply;
char *remote_peer;
char *client_id;
char *target;
char *action;
int call_options;
};
/*!
* \internal
* \brief Add action-specific attributes to query reply XML
*
* \param[in,out] xml XML to add attributes to
* \param[in] action Fence action
* \param[in] device Fence device
* \param[in] target Fence target
*/
static void
add_action_specific_attributes(xmlNode *xml, const char *action,
stonith_device_t *device, const char *target)
{
int action_specific_timeout;
int delay_max;
int delay_base;
CRM_CHECK(xml && action && device, return);
if (is_action_required(action, device)) {
crm_trace("Action '%s' is required using %s", action, device->id);
crm_xml_add_int(xml, F_STONITH_DEVICE_REQUIRED, 1);
}
action_specific_timeout = get_action_timeout(device, action, 0);
if (action_specific_timeout) {
crm_trace("Action '%s' has timeout %dms using %s",
action, action_specific_timeout, device->id);
crm_xml_add_int(xml, F_STONITH_ACTION_TIMEOUT, action_specific_timeout);
}
delay_max = get_action_delay_max(device, action);
if (delay_max > 0) {
crm_trace("Action '%s' has maximum random delay %dms using %s",
action, delay_max, device->id);
crm_xml_add_int(xml, F_STONITH_DELAY_MAX, delay_max / 1000);
}
delay_base = get_action_delay_base(device, action, target);
if (delay_base > 0) {
crm_xml_add_int(xml, F_STONITH_DELAY_BASE, delay_base / 1000);
}
if ((delay_max > 0) && (delay_base == 0)) {
crm_trace("Action '%s' has maximum random delay %dms using %s",
action, delay_max, device->id);
} else if ((delay_max == 0) && (delay_base > 0)) {
crm_trace("Action '%s' has a static delay of %dms using %s",
action, delay_base, device->id);
} else if ((delay_max > 0) && (delay_base > 0)) {
crm_trace("Action '%s' has a minimum delay of %dms and a randomly chosen "
"maximum delay of %dms using %s",
action, delay_base, delay_max, device->id);
}
}
/*!
* \internal
* \brief Add "disallowed" attribute to query reply XML if appropriate
*
* \param[in,out] xml XML to add attribute to
* \param[in] action Fence action
* \param[in] device Fence device
* \param[in] target Fence target
* \param[in] allow_suicide Whether self-fencing is allowed
*/
static void
add_disallowed(xmlNode *xml, const char *action, stonith_device_t *device,
const char *target, gboolean allow_suicide)
{
if (!localhost_is_eligible(device, action, target, allow_suicide)) {
crm_trace("Action '%s' using %s is disallowed for local host",
action, device->id);
pcmk__xe_set_bool_attr(xml, F_STONITH_ACTION_DISALLOWED, true);
}
}
/*!
* \internal
* \brief Add child element with action-specific values to query reply XML
*
* \param[in,out] xml XML to add attribute to
* \param[in] action Fence action
* \param[in] device Fence device
* \param[in] target Fence target
* \param[in] allow_suicide Whether self-fencing is allowed
*/
static void
add_action_reply(xmlNode *xml, const char *action, stonith_device_t *device,
const char *target, gboolean allow_suicide)
{
xmlNode *child = create_xml_node(xml, F_STONITH_ACTION);
crm_xml_add(child, XML_ATTR_ID, action);
add_action_specific_attributes(child, action, device, target);
add_disallowed(child, action, device, target, allow_suicide);
}
static void
stonith_query_capable_device_cb(GList * devices, void *user_data)
{
struct st_query_data *query = user_data;
int available_devices = 0;
xmlNode *dev = NULL;
xmlNode *list = NULL;
GList *lpc = NULL;
/* Pack the results into XML */
list = create_xml_node(NULL, __func__);
crm_xml_add(list, F_STONITH_TARGET, query->target);
for (lpc = devices; lpc != NULL; lpc = lpc->next) {
stonith_device_t *device = g_hash_table_lookup(device_list, lpc->data);
const char *action = query->action;
if (!device) {
/* It is possible the device got unregistered while
* determining who can fence the target */
continue;
}
available_devices++;
dev = create_xml_node(list, F_STONITH_DEVICE);
crm_xml_add(dev, XML_ATTR_ID, device->id);
crm_xml_add(dev, "namespace", device->namespace);
crm_xml_add(dev, "agent", device->agent);
crm_xml_add_int(dev, F_STONITH_DEVICE_VERIFIED, device->verified);
/* If the originating fencer wants to reboot the node, and we have a
* capable device that doesn't support "reboot", remap to "off" instead.
*/
if (!pcmk_is_set(device->flags, st_device_supports_reboot)
&& pcmk__str_eq(query->action, "reboot", pcmk__str_casei)) {
crm_trace("%s doesn't support reboot, using values for off instead",
device->id);
action = "off";
}
/* Add action-specific values if available */
add_action_specific_attributes(dev, action, device, query->target);
if (pcmk__str_eq(query->action, "reboot", pcmk__str_casei)) {
/* A "reboot" *might* get remapped to "off" then "on", so after
* sending the "reboot"-specific values in the main element, we add
* sub-elements for "off" and "on" values.
*
* We short-circuited earlier if "reboot", "off" and "on" are all
* disallowed for the local host. However if only one or two are
* disallowed, we send back the results and mark which ones are
* disallowed. If "reboot" is disallowed, this might cause problems
* with older fencer versions, which won't check for it. Older
* versions will ignore "off" and "on", so they are not a problem.
*/
add_disallowed(dev, action, device, query->target,
pcmk_is_set(query->call_options, st_opt_allow_suicide));
add_action_reply(dev, "off", device, query->target,
pcmk_is_set(query->call_options, st_opt_allow_suicide));
add_action_reply(dev, "on", device, query->target, FALSE);
}
/* A query without a target wants device parameters */
if (query->target == NULL) {
xmlNode *attrs = create_xml_node(dev, XML_TAG_ATTRS);
g_hash_table_foreach(device->params, hash2field, attrs);
}
}
crm_xml_add_int(list, F_STONITH_AVAILABLE_DEVICES, available_devices);
if (query->target) {
crm_debug("Found %d matching device%s for target '%s'",
available_devices, pcmk__plural_s(available_devices),
query->target);
} else {
crm_debug("%d device%s installed",
available_devices, pcmk__plural_s(available_devices));
}
if (list != NULL) {
crm_log_xml_trace(list, "Add query results");
add_message_xml(query->reply, F_STONITH_CALLDATA, list);
}
stonith_send_reply(query->reply, query->call_options, query->remote_peer, query->client_id);
free_xml(query->reply);
free(query->remote_peer);
free(query->client_id);
free(query->target);
free(query->action);
free(query);
free_xml(list);
g_list_free_full(devices, free);
}
static void
stonith_query(xmlNode * msg, const char *remote_peer, const char *client_id, int call_options)
{
struct st_query_data *query = NULL;
const char *action = NULL;
const char *target = NULL;
int timeout = 0;
xmlNode *dev = get_xpath_object("//@" F_STONITH_ACTION, msg, LOG_NEVER);
crm_element_value_int(msg, F_STONITH_TIMEOUT, &timeout);
if (dev) {
const char *device = crm_element_value(dev, F_STONITH_DEVICE);
target = crm_element_value(dev, F_STONITH_TARGET);
action = crm_element_value(dev, F_STONITH_ACTION);
if (device && pcmk__str_eq(device, "manual_ack", pcmk__str_casei)) {
/* No query or reply necessary */
return;
}
}
crm_log_xml_debug(msg, "Query");
query = calloc(1, sizeof(struct st_query_data));
query->reply = stonith_construct_reply(msg, NULL, NULL, pcmk_ok);
query->remote_peer = remote_peer ? strdup(remote_peer) : NULL;
query->client_id = client_id ? strdup(client_id) : NULL;
query->target = target ? strdup(target) : NULL;
query->action = action ? strdup(action) : NULL;
query->call_options = call_options;
get_capable_devices(target, action, timeout,
pcmk_is_set(call_options, st_opt_allow_suicide),
query, stonith_query_capable_device_cb);
}
/*!
* \internal
* \brief Log the result of an asynchronous command
*
* \param[in] cmd Command the result is for
* \param[in] result Result of command
* \param[in] pid Process ID of command, if available
* \param[in] next Alternate device that will be tried if command failed
* \param[in] op_merged Whether this command was merged with an earlier one
*/
static void
log_async_result(async_command_t *cmd, const pcmk__action_result_t *result,
int pid, const char *next, bool op_merged)
{
int log_level = LOG_ERR;
int output_log_level = LOG_NEVER;
guint devices_remaining = g_list_length(cmd->device_next);
GString *msg = g_string_sized_new(80); // Reasonable starting size
// Choose log levels appropriately if we have a result
if (pcmk__result_ok(result)) {
log_level = (cmd->victim == NULL)? LOG_DEBUG : LOG_NOTICE;
if ((result->action_stdout != NULL)
&& !pcmk__str_eq(cmd->action, "metadata", pcmk__str_casei)) {
output_log_level = LOG_DEBUG;
}
next = NULL;
} else {
log_level = (cmd->victim == NULL)? LOG_NOTICE : LOG_ERR;
if ((result->action_stdout != NULL)
&& !pcmk__str_eq(cmd->action, "metadata", pcmk__str_casei)) {
output_log_level = LOG_WARNING;
}
}
// Build the log message piece by piece
g_string_printf(msg, "Operation '%s' ", cmd->action);
if (pid != 0) {
g_string_append_printf(msg, "[%d] ", pid);
}
if (cmd->victim != NULL) {
g_string_append_printf(msg, "targeting %s ", cmd->victim);
}
g_string_append_printf(msg, "using %s ", cmd->device);
// Add exit status or execution status as appropriate
if (result->execution_status == PCMK_EXEC_DONE) {
g_string_append_printf(msg, "returned %d", result->exit_status);
} else {
g_string_append_printf(msg, "could not be executed: %s",
pcmk_exec_status_str(result->execution_status));
}
// Add exit reason and next device if appropriate
if (result->exit_reason != NULL) {
g_string_append_printf(msg, " (%s)", result->exit_reason);
}
if (next != NULL) {
g_string_append_printf(msg, ", retrying with %s", next);
}
if (devices_remaining > 0) {
g_string_append_printf(msg, " (%u device%s remaining)",
(unsigned int) devices_remaining,
pcmk__plural_s(devices_remaining));
}
g_string_append_printf(msg, " " CRM_XS " %scall %d from %s",
(op_merged? "merged " : ""), cmd->id,
cmd->client_name);
// Log the result
do_crm_log(log_level, "%s", msg->str);
g_string_free(msg, TRUE);
// Log the output (which may have multiple lines), if appropriate
if (output_log_level != LOG_NEVER) {
char *prefix = crm_strdup_printf("%s[%d]", cmd->device, pid);
crm_log_output(output_log_level, prefix, result->action_stdout);
free(prefix);
}
}
/*!
* \internal
* \brief Reply to requester after asynchronous command completion
*
* \param[in] cmd Command that completed
* \param[in] result Result of command
* \param[in] pid Process ID of command, if available
* \param[in] merged If true, command was merged with another, not executed
*/
static void
send_async_reply(async_command_t *cmd, const pcmk__action_result_t *result,
int pid, bool merged)
{
xmlNode *reply = NULL;
CRM_CHECK((cmd != NULL) && (result != NULL), return);
log_async_result(cmd, result, pid, NULL, merged);
reply = construct_async_reply(cmd, result);
if (merged) {
pcmk__xe_set_bool_attr(reply, F_STONITH_MERGED, true);
}
if (!stand_alone && pcmk__is_fencing_action(cmd->action)
&& pcmk__str_eq(cmd->origin, cmd->victim, pcmk__str_casei)) {
/* The target was also the originator, so broadcast the result on its
* behalf (since it will be unable to).
*/
crm_trace("Broadcast '%s' result for %s (target was also originator)",
cmd->action, cmd->victim);
crm_xml_add(reply, F_SUBTYPE, "broadcast");
crm_xml_add(reply, F_STONITH_OPERATION, T_STONITH_NOTIFY);
send_cluster_message(NULL, crm_msg_stonith_ng, reply, FALSE);
} else {
// Reply only to the originator
stonith_send_reply(reply, cmd->options, cmd->origin, cmd->client);
}
crm_log_xml_trace(reply, "Reply");
free_xml(reply);
if (stand_alone) {
/* Do notification with a clean data object */
xmlNode *notify_data = create_xml_node(NULL, T_STONITH_NOTIFY_FENCE);
int rc = pcmk_rc2legacy(stonith__result2rc(result));
crm_xml_add_int(notify_data, F_STONITH_RC, rc);
crm_xml_add(notify_data, F_STONITH_TARGET, cmd->victim);
crm_xml_add(notify_data, F_STONITH_OPERATION, cmd->op);
crm_xml_add(notify_data, F_STONITH_DELEGATE, "localhost");
crm_xml_add(notify_data, F_STONITH_DEVICE, cmd->device);
crm_xml_add(notify_data, F_STONITH_REMOTE_OP_ID, cmd->remote_op_id);
crm_xml_add(notify_data, F_STONITH_ORIGIN, cmd->client);
do_stonith_notify(T_STONITH_NOTIFY_FENCE, rc, notify_data);
do_stonith_notify(T_STONITH_NOTIFY_HISTORY, pcmk_ok, NULL);
}
}
static void
cancel_stonith_command(async_command_t * cmd)
{
stonith_device_t *device;
CRM_CHECK(cmd != NULL, return);
if (!cmd->device) {
return;
}
device = g_hash_table_lookup(device_list, cmd->device);
if (device) {
crm_trace("Cancel scheduled '%s' action using %s",
cmd->action, device->id);
device->pending_ops = g_list_remove(device->pending_ops, cmd);
}
}
static void
st_child_done(int pid, const pcmk__action_result_t *result, void *user_data)
{
stonith_device_t *device = NULL;
stonith_device_t *next_device = NULL;
async_command_t *cmd = user_data;
GList *gIter = NULL;
GList *gIterNext = NULL;
CRM_CHECK(cmd != NULL, return);
cmd->active_on = NULL;
/* The device is ready to do something else now */
device = g_hash_table_lookup(device_list, cmd->device);
if (device) {
if (!device->verified && pcmk__result_ok(result) &&
(pcmk__strcase_any_of(cmd->action, "list", "monitor", "status", NULL))) {
device->verified = TRUE;
}
mainloop_set_trigger(device->work);
}
if (pcmk__result_ok(result)) {
GList *iter;
/* see if there are any required devices left to execute for this op */
for (iter = cmd->device_next; iter != NULL; iter = iter->next) {
next_device = g_hash_table_lookup(device_list, iter->data);
if (next_device != NULL && is_action_required(cmd->action, next_device)) {
cmd->device_next = iter->next;
break;
}
next_device = NULL;
}
} else if ((cmd->device_next != NULL)
&& !is_action_required(cmd->action, device)) {
/* if this device didn't work out, see if there are any others we can try.
* if the failed device was 'required', we can't pick another device. */
next_device = g_hash_table_lookup(device_list, cmd->device_next->data);
cmd->device_next = cmd->device_next->next;
}
/* this operation requires more fencing, hooray! */
if (next_device) {
log_async_result(cmd, result, pid, next_device->id, false);
schedule_stonith_command(cmd, next_device);
/* Prevent cmd from being freed */
cmd = NULL;
goto done;
}
send_async_reply(cmd, result, pid, false);
if (!pcmk__result_ok(result)) {
goto done;
}
/* Check to see if any operations are scheduled to do the exact
* same thing that just completed. If so, rather than
* performing the same fencing operation twice, return the result
* of this operation for all pending commands it matches. */
for (gIter = cmd_list; gIter != NULL; gIter = gIterNext) {
async_command_t *cmd_other = gIter->data;
gIterNext = gIter->next;
if (cmd == cmd_other) {
continue;
}
/* A pending scheduled command matches the command that just finished if.
* 1. The client connections are different.
* 2. The node victim is the same.
* 3. The fencing action is the same.
* 4. The device scheduled to execute the action is the same.
*/
if (pcmk__str_eq(cmd->client, cmd_other->client, pcmk__str_casei) ||
!pcmk__str_eq(cmd->victim, cmd_other->victim, pcmk__str_casei) ||
!pcmk__str_eq(cmd->action, cmd_other->action, pcmk__str_casei) ||
!pcmk__str_eq(cmd->device, cmd_other->device, pcmk__str_casei)) {
continue;
}
/* Duplicate merging will do the right thing for either type of remapped
* reboot. If the executing fencer remapped an unsupported reboot to
* off, then cmd->action will be reboot and will be merged with any
* other reboot requests. If the originating fencer remapped a
* topology reboot to off then on, we will get here once with
* cmd->action "off" and once with "on", and they will be merged
* separately with similar requests.
*/
crm_notice("Merging fencing action '%s' targeting %s originating from "
"client %s with identical fencing request from client %s",
cmd_other->action, cmd_other->victim, cmd_other->client_name,
cmd->client_name);
cmd_list = g_list_remove_link(cmd_list, gIter);
send_async_reply(cmd_other, result, pid, true);
cancel_stonith_command(cmd_other);
free_async_command(cmd_other);
g_list_free_1(gIter);
}
done:
free_async_command(cmd);
}
static gint
sort_device_priority(gconstpointer a, gconstpointer b)
{
const stonith_device_t *dev_a = a;
const stonith_device_t *dev_b = b;
if (dev_a->priority > dev_b->priority) {
return -1;
} else if (dev_a->priority < dev_b->priority) {
return 1;
}
return 0;
}
static void
stonith_fence_get_devices_cb(GList * devices, void *user_data)
{
async_command_t *cmd = user_data;
stonith_device_t *device = NULL;
guint ndevices = g_list_length(devices);
crm_info("Found %d matching device%s for target '%s'",
ndevices, pcmk__plural_s(ndevices), cmd->victim);
if (devices != NULL) {
/* Order based on priority */
devices = g_list_sort(devices, sort_device_priority);
device = g_hash_table_lookup(device_list, devices->data);
}
if (device == NULL) { // No device found
pcmk__action_result_t result = PCMK__UNKNOWN_RESULT;
pcmk__set_result(&result, CRM_EX_ERROR, PCMK_EXEC_NO_FENCE_DEVICE,
"No fence device configured for target");
send_async_reply(cmd, &result, 0, false);
pcmk__reset_result(&result);
free_async_command(cmd);
g_list_free_full(devices, free);
} else { // Device found, schedule it for fencing
cmd->device_list = devices;
cmd->device_next = devices->next;
schedule_stonith_command(cmd, device);
}
}
static int
stonith_fence(xmlNode * msg)
{
const char *device_id = NULL;
stonith_device_t *device = NULL;
async_command_t *cmd = create_async_command(msg);
xmlNode *dev = get_xpath_object("//@" F_STONITH_TARGET, msg, LOG_ERR);
if (cmd == NULL) {
return -EPROTO;
}
device_id = crm_element_value(dev, F_STONITH_DEVICE);
if (device_id) {
device = g_hash_table_lookup(device_list, device_id);
if (device == NULL) {
crm_err("Requested device '%s' is not available", device_id);
return -ENODEV;
}
schedule_stonith_command(cmd, device);
} else {
const char *host = crm_element_value(dev, F_STONITH_TARGET);
if (cmd->options & st_opt_cs_nodeid) {
int nodeid;
crm_node_t *node;
pcmk__scan_min_int(host, &nodeid, 0);
node = pcmk__search_known_node_cache(nodeid, NULL, CRM_GET_PEER_ANY);
if (node) {
host = node->uname;
}
}
/* If we get to here, then self-fencing is implicitly allowed */
get_capable_devices(host, cmd->action, cmd->default_timeout,
TRUE, cmd, stonith_fence_get_devices_cb);
}
return -EINPROGRESS;
}
xmlNode *
stonith_construct_reply(xmlNode * request, const char *output, xmlNode * data, int rc)
{
xmlNode *reply = NULL;
reply = create_xml_node(NULL, T_STONITH_REPLY);
crm_xml_add(reply, "st_origin", __func__);
crm_xml_add(reply, F_TYPE, T_STONITH_NG);
crm_xml_add(reply, F_STONITH_OUTPUT, output);
crm_xml_add_int(reply, F_STONITH_RC, rc);
if (request == NULL) {
/* Most likely, this is the result of a stonith operation that was
* initiated before we came up. Unfortunately that means we lack enough
* information to provide clients with a full result.
*
* @TODO Maybe synchronize this information at start-up?
*/
crm_warn("Missing request information for client notifications for "
"operation with result %d (initiated before we came up?)", rc);
} else {
const char *name = NULL;
const char *value = NULL;
const char *names[] = {
F_STONITH_OPERATION,
F_STONITH_CALLID,
F_STONITH_CLIENTID,
F_STONITH_CLIENTNAME,
F_STONITH_REMOTE_OP_ID,
F_STONITH_CALLOPTS
};
crm_trace("Creating a result reply with%s reply output (rc=%d)",
(data? "" : "out"), rc);
for (int lpc = 0; lpc < PCMK__NELEM(names); lpc++) {
name = names[lpc];
value = crm_element_value(request, name);
crm_xml_add(reply, name, value);
}
if (data != NULL) {
add_message_xml(reply, F_STONITH_CALLDATA, data);
}
}
return reply;
}
/*!
* \internal
* \brief Build an XML reply to an asynchronous fencing command
*
* \param[in] cmd Fencing command that reply is for
* \param[in] result Command result
*/
static xmlNode *
construct_async_reply(async_command_t *cmd, const pcmk__action_result_t *result)
{
xmlNode *reply = create_xml_node(NULL, T_STONITH_REPLY);
crm_xml_add(reply, "st_origin", __func__);
crm_xml_add(reply, F_TYPE, T_STONITH_NG);
crm_xml_add(reply, F_STONITH_OPERATION, cmd->op);
crm_xml_add(reply, F_STONITH_DEVICE, cmd->device);
crm_xml_add(reply, F_STONITH_REMOTE_OP_ID, cmd->remote_op_id);
crm_xml_add(reply, F_STONITH_CLIENTID, cmd->client);
crm_xml_add(reply, F_STONITH_CLIENTNAME, cmd->client_name);
crm_xml_add(reply, F_STONITH_TARGET, cmd->victim);
crm_xml_add(reply, F_STONITH_ACTION, cmd->op);
crm_xml_add(reply, F_STONITH_ORIGIN, cmd->origin);
crm_xml_add_int(reply, F_STONITH_CALLID, cmd->id);
crm_xml_add_int(reply, F_STONITH_CALLOPTS, cmd->options);
crm_xml_add_int(reply, F_STONITH_RC,
pcmk_rc2legacy(stonith__result2rc(result)));
crm_xml_add(reply, F_STONITH_OUTPUT, result->action_stdout);
return reply;
}
bool fencing_peer_active(crm_node_t *peer)
{
if (peer == NULL) {
return FALSE;
} else if (peer->uname == NULL) {
return FALSE;
} else if (pcmk_is_set(peer->processes, crm_get_cluster_proc())) {
return TRUE;
}
return FALSE;
}
-void set_fencing_completed(remote_fencing_op_t * op)
+void
+set_fencing_completed(remote_fencing_op_t *op)
{
-#ifdef CLOCK_MONOTONIC
struct timespec tv;
- clock_gettime(CLOCK_MONOTONIC, &tv);
-
+ qb_util_timespec_from_epoch_get(&tv);
op->completed = tv.tv_sec;
op->completed_nsec = tv.tv_nsec;
-#else
- op->completed = time(NULL);
- op->completed_nsec = 0L;
-#endif
}
/*!
* \internal
* \brief Look for alternate node needed if local node shouldn't fence target
*
* \param[in] target Node that must be fenced
*
* \return Name of an alternate node that should fence \p target if any,
* or NULL otherwise
*/
static const char *
check_alternate_host(const char *target)
{
const char *alternate_host = NULL;
crm_trace("Checking if we (%s) can fence %s", stonith_our_uname, target);
if (find_topology_for_host(target) && pcmk__str_eq(target, stonith_our_uname, pcmk__str_casei)) {
GHashTableIter gIter;
crm_node_t *entry = NULL;
g_hash_table_iter_init(&gIter, crm_peer_cache);
while (g_hash_table_iter_next(&gIter, NULL, (void **)&entry)) {
crm_trace("Checking for %s.%d != %s", entry->uname, entry->id, target);
if (fencing_peer_active(entry)
&& !pcmk__str_eq(entry->uname, target, pcmk__str_casei)) {
alternate_host = entry->uname;
break;
}
}
if (alternate_host == NULL) {
crm_err("No alternate host available to handle request "
"for self-fencing with topology");
g_hash_table_iter_init(&gIter, crm_peer_cache);
while (g_hash_table_iter_next(&gIter, NULL, (void **)&entry)) {
crm_notice("Peer[%d] %s", entry->id, entry->uname);
}
}
}
return alternate_host;
}
/*!
* \internal
* \brief Send a reply to a CPG peer or IPC client
*
* \param[in] reply XML reply to send
* \param[in] call_options Send synchronously if st_opt_sync_call is set here
* \param[in] remote_peer If not NULL, name of peer node to send CPG reply
* \param[in] client_id If not NULL, name of client to send IPC reply
*/
static void
stonith_send_reply(xmlNode *reply, int call_options, const char *remote_peer,
const char *client_id)
{
CRM_CHECK((reply != NULL) && ((remote_peer != NULL) || (client_id != NULL)),
return);
if (remote_peer == NULL) {
do_local_reply(reply, client_id,
pcmk_is_set(call_options, st_opt_sync_call), FALSE);
} else {
send_cluster_message(crm_get_peer(0, remote_peer), crm_msg_stonith_ng,
reply, FALSE);
}
}
static void
remove_relay_op(xmlNode * request)
{
xmlNode *dev = get_xpath_object("//@" F_STONITH_ACTION, request, LOG_TRACE);
const char *relay_op_id = NULL;
const char *op_id = NULL;
const char *client_name = NULL;
const char *target = NULL;
remote_fencing_op_t *relay_op = NULL;
if (dev) {
target = crm_element_value(dev, F_STONITH_TARGET);
}
relay_op_id = crm_element_value(request, F_STONITH_REMOTE_OP_ID_RELAY);
op_id = crm_element_value(request, F_STONITH_REMOTE_OP_ID);
client_name = crm_element_value(request, F_STONITH_CLIENTNAME);
/* Delete RELAY operation. */
if (relay_op_id && target && pcmk__str_eq(target, stonith_our_uname, pcmk__str_casei)) {
relay_op = g_hash_table_lookup(stonith_remote_op_list, relay_op_id);
if (relay_op) {
GHashTableIter iter;
remote_fencing_op_t *list_op = NULL;
g_hash_table_iter_init(&iter, stonith_remote_op_list);
/* If the operation to be deleted is registered as a duplicate, delete the registration. */
while (g_hash_table_iter_next(&iter, NULL, (void **)&list_op)) {
GList *dup_iter = NULL;
if (list_op != relay_op) {
for (dup_iter = list_op->duplicates; dup_iter != NULL; dup_iter = dup_iter->next) {
remote_fencing_op_t *other = dup_iter->data;
if (other == relay_op) {
other->duplicates = g_list_remove(other->duplicates, relay_op);
break;
}
}
}
}
crm_debug("Deleting relay op %s ('%s' targeting %s for %s), "
"replaced by op %s ('%s' targeting %s for %s)",
relay_op->id, relay_op->action, relay_op->target,
relay_op->client_name, op_id, relay_op->action, target,
client_name);
g_hash_table_remove(stonith_remote_op_list, relay_op_id);
}
}
}
/*!
* \internal
* \brief Check whether an API request was sent by a privileged user
*
* API commands related to fencing configuration may be done only by privileged
* IPC users (i.e. root or hacluster), because all other users should go through
* the CIB to have ACLs applied. If no client was given, this is a peer request,
* which is always allowed.
*
* \param[in] c IPC client that sent request (or NULL if sent by CPG peer)
* \param[in] op Requested API operation (for logging only)
*
* \return true if sender is peer or privileged client, otherwise false
*/
static inline bool
is_privileged(pcmk__client_t *c, const char *op)
{
if ((c == NULL) || pcmk_is_set(c->flags, pcmk__client_privileged)) {
return true;
} else {
crm_warn("Rejecting IPC request '%s' from unprivileged client %s",
crm_str(op), pcmk__client_name(c));
return false;
}
}
static void
handle_request(pcmk__client_t *client, uint32_t id, uint32_t flags,
xmlNode *request, const char *remote_peer)
{
int call_options = 0;
int rc = -EOPNOTSUPP;
xmlNode *data = NULL;
bool need_reply = true;
char *output = NULL;
const char *op = crm_element_value(request, F_STONITH_OPERATION);
const char *client_id = crm_element_value(request, F_STONITH_CLIENTID);
crm_element_value_int(request, F_STONITH_CALLOPTS, &call_options);
if (pcmk_is_set(call_options, st_opt_sync_call) && (client != NULL)) {
CRM_ASSERT(client->request_id == id);
}
if (pcmk__str_eq(op, CRM_OP_REGISTER, pcmk__str_none)) {
xmlNode *reply = create_xml_node(NULL, "reply");
CRM_ASSERT(client);
crm_xml_add(reply, F_STONITH_OPERATION, CRM_OP_REGISTER);
crm_xml_add(reply, F_STONITH_CLIENTID, client->id);
pcmk__ipc_send_xml(client, id, reply, flags);
client->request_id = 0;
free_xml(reply);
rc = pcmk_ok;
need_reply = false;
} else if (pcmk__str_eq(op, STONITH_OP_EXEC, pcmk__str_none)) {
rc = stonith_device_action(request, &output);
need_reply = (rc != -EINPROGRESS);
} else if (pcmk__str_eq(op, STONITH_OP_TIMEOUT_UPDATE, pcmk__str_none)) {
const char *call_id = crm_element_value(request, F_STONITH_CALLID);
const char *client_id = crm_element_value(request, F_STONITH_CLIENTID);
int op_timeout = 0;
crm_element_value_int(request, F_STONITH_TIMEOUT, &op_timeout);
do_stonith_async_timeout_update(client_id, call_id, op_timeout);
rc = pcmk_ok;
need_reply = false;
} else if (pcmk__str_eq(op, STONITH_OP_QUERY, pcmk__str_none)) {
if (remote_peer) {
create_remote_stonith_op(client_id, request, TRUE); /* Record it for the future notification */
}
/* Delete the DC node RELAY operation. */
remove_relay_op(request);
stonith_query(request, remote_peer, client_id, call_options);
rc = pcmk_ok;
need_reply = false;
} else if (pcmk__str_eq(op, T_STONITH_NOTIFY, pcmk__str_none)) {
const char *flag_name = NULL;
CRM_ASSERT(client);
flag_name = crm_element_value(request, F_STONITH_NOTIFY_ACTIVATE);
if (flag_name) {
crm_debug("Enabling %s callbacks for client %s",
flag_name, pcmk__client_name(client));
pcmk__set_client_flags(client, get_stonith_flag(flag_name));
}
flag_name = crm_element_value(request, F_STONITH_NOTIFY_DEACTIVATE);
if (flag_name) {
crm_debug("Disabling %s callbacks for client %s",
flag_name, pcmk__client_name(client));
pcmk__clear_client_flags(client, get_stonith_flag(flag_name));
}
pcmk__ipc_send_ack(client, id, flags, "ack", CRM_EX_OK);
rc = pcmk_ok;
need_reply = false;
} else if (pcmk__str_eq(op, STONITH_OP_RELAY, pcmk__str_none)) {
xmlNode *dev = get_xpath_object("//@" F_STONITH_TARGET, request, LOG_TRACE);
crm_notice("Received forwarded fencing request from "
"%s %s to fence (%s) peer %s",
((client == NULL)? "peer" : "client"),
((client == NULL)? remote_peer : pcmk__client_name(client)),
crm_element_value(dev, F_STONITH_ACTION),
crm_element_value(dev, F_STONITH_TARGET));
if (initiate_remote_stonith_op(NULL, request, FALSE) == NULL) {
rc = -EPROTO;
} else {
rc = -EINPROGRESS;
need_reply = false;
}
} else if (pcmk__str_eq(op, STONITH_OP_FENCE, pcmk__str_none)) {
if (remote_peer || stand_alone) {
rc = stonith_fence(request);
} else if (pcmk_is_set(call_options, st_opt_manual_ack)) {
switch (fenced_handle_manual_confirmation(client, request)) {
case pcmk_rc_ok:
rc = pcmk_ok;
break;
case EINPROGRESS:
rc = -EINPROGRESS;
break;
default:
rc = -EPROTO;
break;
}
} else {
const char *alternate_host = NULL;
xmlNode *dev = get_xpath_object("//@" F_STONITH_TARGET, request, LOG_TRACE);
const char *target = crm_element_value(dev, F_STONITH_TARGET);
const char *action = crm_element_value(dev, F_STONITH_ACTION);
const char *device = crm_element_value(dev, F_STONITH_DEVICE);
if (client) {
int tolerance = 0;
crm_notice("Client %s wants to fence (%s) %s using %s",
pcmk__client_name(client), action,
target, (device? device : "any device"));
crm_element_value_int(dev, F_STONITH_TOLERANCE, &tolerance);
if (stonith_check_fence_tolerance(tolerance, target, action)) {
rc = pcmk_ok;
goto done;
}
} else {
crm_notice("Peer %s wants to fence (%s) '%s' with device '%s'",
remote_peer, action, target, device ? device : "(any)");
}
alternate_host = check_alternate_host(target);
if (alternate_host && client) {
const char *client_id = NULL;
remote_fencing_op_t *op = NULL;
crm_notice("Forwarding self-fencing request to peer %s "
"due to topology", alternate_host);
if (client->id) {
client_id = client->id;
} else {
client_id = crm_element_value(request, F_STONITH_CLIENTID);
}
/* Create an operation for RELAY and send the ID in the RELAY message. */
/* When a QUERY response is received, delete the RELAY operation to avoid the existence of duplicate operations. */
op = create_remote_stonith_op(client_id, request, FALSE);
crm_xml_add(request, F_STONITH_OPERATION, STONITH_OP_RELAY);
crm_xml_add(request, F_STONITH_CLIENTID, client->id);
crm_xml_add(request, F_STONITH_REMOTE_OP_ID, op->id);
send_cluster_message(crm_get_peer(0, alternate_host), crm_msg_stonith_ng, request,
FALSE);
rc = -EINPROGRESS;
} else if (initiate_remote_stonith_op(client, request, FALSE) == NULL) {
rc = -EPROTO;
} else {
rc = -EINPROGRESS;
}
}
need_reply = (rc != -EINPROGRESS);
} else if (pcmk__str_eq(op, STONITH_OP_FENCE_HISTORY, pcmk__str_none)) {
stonith_fence_history(request, &data, remote_peer, call_options);
rc = pcmk_ok;
if (pcmk_is_set(call_options, st_opt_discard_reply)) {
/* we don't expect answers to the broadcast
* we might have sent out
*/
rc = pcmk_ok;
need_reply = false;
}
} else if (pcmk__str_eq(op, STONITH_OP_DEVICE_ADD, pcmk__str_none)) {
const char *device_id = NULL;
if (is_privileged(client, op)) {
rc = stonith_device_register(request, &device_id, FALSE);
} else {
rc = -EACCES;
}
do_stonith_notify_device(op, rc, device_id);
} else if (pcmk__str_eq(op, STONITH_OP_DEVICE_DEL, pcmk__str_none)) {
xmlNode *dev = get_xpath_object("//" F_STONITH_DEVICE, request, LOG_ERR);
const char *device_id = crm_element_value(dev, XML_ATTR_ID);
if (is_privileged(client, op)) {
stonith_device_remove(device_id, false);
rc = pcmk_ok;
} else {
rc = -EACCES;
}
do_stonith_notify_device(op, rc, device_id);
} else if (pcmk__str_eq(op, STONITH_OP_LEVEL_ADD, pcmk__str_none)) {
char *device_id = NULL;
if (is_privileged(client, op)) {
rc = stonith_level_register(request, &device_id);
} else {
rc = -EACCES;
}
do_stonith_notify_level(op, rc, device_id);
free(device_id);
} else if (pcmk__str_eq(op, STONITH_OP_LEVEL_DEL, pcmk__str_none)) {
char *device_id = NULL;
if (is_privileged(client, op)) {
rc = stonith_level_remove(request, &device_id);
} else {
rc = -EACCES;
}
do_stonith_notify_level(op, rc, device_id);
} else if(pcmk__str_eq(op, CRM_OP_RM_NODE_CACHE, pcmk__str_casei)) {
int node_id = 0;
const char *name = NULL;
crm_element_value_int(request, XML_ATTR_ID, &node_id);
name = crm_element_value(request, XML_ATTR_UNAME);
reap_crm_member(node_id, name);
rc = pcmk_ok;
need_reply = false;
} else {
crm_err("Unknown IPC request %s from %s %s", op,
((client == NULL)? "peer" : "client"),
((client == NULL)? remote_peer : pcmk__client_name(client)));
}
done:
// Reply if result is known
if (need_reply) {
xmlNode *reply = stonith_construct_reply(request, output, data, rc);
stonith_send_reply(reply, call_options, remote_peer, client_id);
free_xml(reply);
}
free(output);
free_xml(data);
crm_debug("Processed %s request from %s %s: %s (rc=%d)",
op, ((client == NULL)? "peer" : "client"),
((client == NULL)? remote_peer : pcmk__client_name(client)),
((rc > 0)? "" : pcmk_strerror(rc)), rc);
}
static void
handle_reply(pcmk__client_t *client, xmlNode *request, const char *remote_peer)
{
// Copy, because request might be freed before we want to log this
char *op = crm_element_value_copy(request, F_STONITH_OPERATION);
if (pcmk__str_eq(op, STONITH_OP_QUERY, pcmk__str_none)) {
process_remote_stonith_query(request);
} else if (pcmk__str_any_of(op, T_STONITH_NOTIFY, STONITH_OP_FENCE, NULL)) {
fenced_process_fencing_reply(request);
} else {
crm_err("Ignoring unknown %s reply from %s %s",
crm_str(op), ((client == NULL)? "peer" : "client"),
((client == NULL)? remote_peer : pcmk__client_name(client)));
crm_log_xml_warn(request, "UnknownOp");
free(op);
return;
}
crm_debug("Processed %s reply from %s %s",
op, ((client == NULL)? "peer" : "client"),
((client == NULL)? remote_peer : pcmk__client_name(client)));
free(op);
}
/*!
* \internal
* \brief Handle a message from an IPC client or CPG peer
*
* \param[in] client If not NULL, IPC client that sent message
* \param[in] id If from IPC client, IPC message ID
* \param[in] flags Message flags
* \param[in] message Message XML
* \param[in] remote_peer If not NULL, CPG peer that sent message
*/
void
stonith_command(pcmk__client_t *client, uint32_t id, uint32_t flags,
xmlNode *message, const char *remote_peer)
{
int call_options = st_opt_none;
bool is_reply = get_xpath_object("//" T_STONITH_REPLY, message,
LOG_NEVER) != NULL;
crm_element_value_int(message, F_STONITH_CALLOPTS, &call_options);
crm_debug("Processing %ssynchronous %s %s %u from %s %s",
pcmk_is_set(call_options, st_opt_sync_call)? "" : "a",
crm_element_value(message, F_STONITH_OPERATION),
(is_reply? "reply" : "request"), id,
((client == NULL)? "peer" : "client"),
((client == NULL)? remote_peer : pcmk__client_name(client)));
if (pcmk_is_set(call_options, st_opt_sync_call)) {
CRM_ASSERT(client == NULL || client->request_id == id);
}
if (is_reply) {
handle_reply(client, message, remote_peer);
} else {
handle_request(client, id, flags, message, remote_peer);
}
}

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