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commands.c
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commands.c
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/*
* Copyright (C) 2009 Andrew Beekhof <andrew@beekhof.net>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#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/ipcs.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>
#if SUPPORT_CIBSECRETS
# include <crm/common/cib_secrets.h>
#endif
#include <internal.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) */
GListPtr capable;
};
static gboolean stonith_device_dispatch(gpointer user_data);
static void st_child_done(GPid pid, int rc, const char *output, gpointer 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);
typedef struct async_command_s {
int id;
int pid;
int fd_stdout;
int options;
int default_timeout; /* seconds */
int timeout; /* seconds */
int start_delay; /* milliseconds */
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;
char *mode;
GListPtr device_list;
GListPtr device_next;
void *internal_user_data;
void (*done_cb) (GPid pid, int rc, const char *output, gpointer 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;
} async_command_t;
static xmlNode *stonith_construct_async_reply(async_command_t * cmd, const char *output,
xmlNode * data, int rc);
static gboolean
is_action_required(const char *action, stonith_device_t *device)
{
if(device == NULL) {
return FALSE;
} else if (device->required_actions == NULL) {
return FALSE;
} else if (strstr(device->required_actions, action)) {
return TRUE;
}
return FALSE;
}
static int
get_action_delay_max(stonith_device_t * device, const char * action)
{
const char *value = NULL;
int delay_max_ms = 0;
if (safe_str_neq(action, "off") && safe_str_neq(action, "reboot")) {
return 0;
}
value = g_hash_table_lookup(device->params, STONITH_ATTR_DELAY_MAX);
if (value) {
delay_max_ms = crm_get_msec(value);
}
return delay_max_ms;
}
/*!
* \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 STONITH register_device() API instead of going through the CIB
* (e.g. stonith_admin uses it for its -R option, and the LRMD uses it to
* ensure a device is registered when a command is issued). As device
* properties, pcmk_*_timeout parameters can be grabbed by stonithd 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 (safe_str_eq(action, "reboot")
&& is_not_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) - 1, "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->mode);
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;
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->mode = crm_element_value_copy(op, F_STONITH_MODE);
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 gboolean
stonith_device_execute(stonith_device_t * device)
{
int exec_rc = 0;
const char *action_str = NULL;
async_command_t *cmd = NULL;
stonith_action_t *action = NULL;
CRM_CHECK(device != NULL, return FALSE);
if (device->active_pid) {
crm_trace("%s is still active with pid %u", device->id, device->active_pid);
return TRUE;
}
if (device->pending_ops) {
GList *first = device->pending_ops;
cmd = first->data;
if (cmd && cmd->delay_id) {
crm_trace
("Operation %s%s%s on %s was asked to run too early, waiting for start_delay timeout of %dms",
cmd->action, cmd->victim ? " for node " : "", cmd->victim ? cmd->victim : "",
device->id, cmd->start_delay);
return TRUE;
}
device->pending_ops = g_list_remove_link(device->pending_ops, first);
g_list_free_1(first);
}
if (cmd == NULL) {
crm_trace("Nothing further to do for %s", device->id);
return TRUE;
}
if(safe_str_eq(device->agent, STONITH_WATCHDOG_AGENT)) {
if(safe_str_eq(cmd->action, "reboot")) {
pcmk_panic(__FUNCTION__);
return TRUE;
} else if(safe_str_eq(cmd->action, "off")) {
pcmk_panic(__FUNCTION__);
return TRUE;
} else {
crm_info("Faking success for %s watchdog operation", cmd->action);
cmd->done_cb(0, 0, NULL, cmd);
return TRUE;
}
}
#if SUPPORT_CIBSECRETS
if (replace_secret_params(device->id, device->params) < 0) {
/* replacing secrets failed! */
if (safe_str_eq(cmd->action,"stop")) {
/* don't fail on stop! */
crm_info("proceeding with the stop operation for %s", device->id);
} else {
crm_err("failed to get secrets for %s, "
"considering resource not configured", device->id);
exec_rc = PCMK_OCF_NOT_CONFIGURED;
cmd->done_cb(0, exec_rc, NULL, cmd);
return TRUE;
}
}
#endif
action_str = cmd->action;
if (safe_str_eq(cmd->action, "reboot") && is_not_set(device->flags, st_device_supports_reboot)) {
crm_warn("Agent '%s' does not advertise support for 'reboot', performing 'off' action instead", device->agent);
action_str = "off";
}
action = stonith_action_create(device->agent,
action_str,
cmd->victim,
cmd->victim_nodeid,
cmd->timeout, device->params, device->aliases);
/* for async exec, exec_rc is pid if positive and error code if negative/zero */
exec_rc = stonith_action_execute_async(action, (void *)cmd, cmd->done_cb);
if (exec_rc > 0) {
crm_debug("Operation %s%s%s on %s now running with pid=%d, timeout=%ds",
cmd->action, cmd->victim ? " for node " : "", cmd->victim ? cmd->victim : "",
device->id, exec_rc, cmd->timeout);
device->active_pid = exec_rc;
} else {
crm_warn("Operation %s%s%s on %s failed: %s (%d)",
cmd->action, cmd->victim ? " for node " : "", cmd->victim ? cmd->victim : "",
device->id, pcmk_strerror(exec_rc), exec_rc);
cmd->done_cb(0, exec_rc, NULL, cmd);
}
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;
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 on %s for remote peer %s with op id (%s) (timeout=%ds)",
cmd->action, device->id, cmd->origin, cmd->remote_op_id, cmd->timeout);
} else {
crm_debug("Scheduling %s on %s for %s (timeout=%ds)",
cmd->action, device->id, cmd->client, cmd->timeout);
}
device->pending_ops = g_list_append(device->pending_ops, cmd);
mainloop_set_trigger(device->work);
delay_max = get_action_delay_max(device, cmd->action);
if (delay_max > 0) {
cmd->start_delay = rand() % delay_max;
crm_notice("Delaying %s on %s for %lldms (timeout=%ds)",
cmd->action, device->id, cmd->start_delay, cmd->timeout);
cmd->delay_id = g_timeout_add(cmd->start_delay, start_delay_helper, cmd);
}
}
void
free_device(gpointer data)
{
GListPtr 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);
cmd->done_cb(0, -ENODEV, NULL, cmd);
free_async_command(cmd);
}
g_list_free(device->pending_ops);
g_list_free_full(device->targets, free);
mainloop_destroy_trigger(device->work);
free_xml(device->agent_metadata);
free(device->namespace);
free(device->on_target_actions);
free(device->required_actions);
free(device->agent);
free(device->id);
free(device);
}
static GHashTable *
build_port_aliases(const char *hostmap, GListPtr * targets)
{
char *name = NULL;
int last = 0, lpc = 0, max = 0, added = 0;
GHashTable *aliases =
g_hash_table_new_full(crm_strcase_hash, crm_strcase_equal, g_hash_destroy_str, g_hash_destroy_str);
if (hostmap == NULL) {
return aliases;
}
max = strlen(hostmap);
for (; lpc <= max; lpc++) {
switch (hostmap[lpc]) {
/* 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;
value = calloc(1, 1 + lpc - last);
memcpy(value, hostmap + last, lpc - last);
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;
}
static void
parse_host_line(const char *line, int max, GListPtr * output)
{
int lpc = 0;
int last = 0;
if (max <= 0) {
return;
}
/* Check for any complaints about additional parameters that the device doesn't understand */
if (strstr(line, "invalid") || strstr(line, "variable")) {
crm_debug("Skipping: %s", line);
return;
}
crm_trace("Processing %d bytes: [%s]", max, line);
/* Skip initial whitespace */
for (lpc = 0; lpc <= max && isspace(line[lpc]); lpc++) {
last = lpc + 1;
}
/* Now the actual content */
for (lpc = 0; lpc <= max; lpc++) {
gboolean a_space = isspace(line[lpc]);
if (a_space && lpc < max && isspace(line[lpc + 1])) {
/* fast-forward to the end of the spaces */
} else if (a_space || line[lpc] == ',' || line[lpc] == ';' || line[lpc] == 0) {
int rc = 1;
char *entry = NULL;
if (lpc != last) {
entry = calloc(1, 1 + lpc - last);
rc = sscanf(line + last, "%[a-zA-Z0-9_-.]", entry);
}
if (entry == NULL) {
/* Skip */
} else if (rc != 1) {
crm_warn("Could not parse (%d %d): %s", last, lpc, line + last);
} else if (safe_str_neq(entry, "on") && safe_str_neq(entry, "off")) {
crm_trace("Adding '%s'", entry);
*output = g_list_append(*output, entry);
entry = NULL;
}
free(entry);
last = lpc + 1;
}
}
}
static GListPtr
parse_host_list(const char *hosts)
{
int lpc = 0;
int max = 0;
int last = 0;
GListPtr output = NULL;
if (hosts == NULL) {
return output;
}
max = strlen(hosts);
for (lpc = 0; lpc <= max; lpc++) {
if (hosts[lpc] == '\n' || hosts[lpc] == 0) {
char *line = NULL;
int len = lpc - last;
if(len > 1) {
line = malloc(1 + len);
}
if(line) {
snprintf(line, 1 + len, "%s", hosts + last);
line[len] = 0; /* Because it might be '\n' */
parse_host_line(line, len, &output);
free(line);
}
last = lpc + 1;
}
}
crm_trace("Parsed %d entries from '%s'", g_list_length(output), hosts);
return output;
}
GHashTable *metadata_cache = NULL;
static xmlNode *
get_agent_metadata(const char *agent)
{
xmlNode *xml = NULL;
char *buffer = NULL;
if(metadata_cache == NULL) {
metadata_cache = g_hash_table_new_full(
crm_str_hash, g_str_equal, g_hash_destroy_str, g_hash_destroy_str);
}
buffer = g_hash_table_lookup(metadata_cache, agent);
if(safe_str_eq(agent, STONITH_WATCHDOG_AGENT)) {
return NULL;
} else if(buffer == NULL) {
stonith_t *st = stonith_api_new();
int 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 NULL;
}
g_hash_table_replace(metadata_cache, strdup(agent), buffer);
}
xml = string2xml(buffer);
return xml;
}
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;
}
static char *
add_action(char *actions, const char *action)
{
static size_t len = 256;
int offset = 0;
if (actions == NULL) {
actions = calloc(1, len);
} else {
offset = strlen(actions);
}
if (offset > 0) {
offset += snprintf(actions+offset, len-offset, " ");
}
offset += snprintf(actions+offset, 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 *on_target = NULL;
const char *action = NULL;
const char *automatic = NULL;
const char *required = NULL;
xmlNode *match = getXpathResult(xpath, lpc);
CRM_LOG_ASSERT(match != NULL);
if(match == NULL) { continue; };
on_target = crm_element_value(match, "on_target");
action = crm_element_value(match, "name");
automatic = crm_element_value(match, "automatic");
required = crm_element_value(match, "required");
if(safe_str_eq(action, "list")) {
set_bit(device->flags, st_device_supports_list);
} else if(safe_str_eq(action, "status")) {
set_bit(device->flags, st_device_supports_status);
} else if(safe_str_eq(action, "reboot")) {
set_bit(device->flags, st_device_supports_reboot);
} else if(safe_str_eq(action, "on") && (crm_is_true(automatic))) {
/* this setting implies required=true for unfencing */
required = "true";
}
if (action && crm_is_true(on_target)) {
device->on_target_actions = add_action(device->on_target_actions, action);
}
if (action && crm_is_true(required)) {
device->required_actions = add_action(device->required_actions, action);
}
}
freeXpathObject(xpath);
}
static stonith_device_t *
build_device_from_xml(xmlNode * msg)
{
const char *value = NULL;
xmlNode *dev = get_xpath_object("//" F_STONITH_DEVICE, msg, LOG_ERR);
stonith_device_t *device = NULL;
device = calloc(1, sizeof(stonith_device_t));
device->id = crm_element_value_copy(dev, XML_ATTR_ID);
device->agent = crm_element_value_copy(dev, "agent");
device->namespace = crm_element_value_copy(dev, "namespace");
device->params = xml2list(dev);
value = g_hash_table_lookup(device->params, STONITH_ATTR_HOSTLIST);
if (value) {
device->targets = parse_host_list(value);
}
value = g_hash_table_lookup(device->params, STONITH_ATTR_HOSTMAP);
device->aliases = build_port_aliases(value, &(device->targets));
device->agent_metadata = get_agent_metadata(device->agent);
read_action_metadata(device);
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 (safe_str_eq(value, "unfencing")) {
/* if this agent requires unfencing, 'on' is considered a required action */
device->required_actions = add_action(device->required_actions, "on");
}
if (is_action_required("on", device)) {
crm_info("The fencing device '%s' requires unfencing", device->id);
}
if (device->on_target_actions) {
crm_info("The fencing device '%s' requires actions (%s) to be executed on the target node",
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 const char *
target_list_type(stonith_device_t * dev)
{
const char *check_type = NULL;
check_type = g_hash_table_lookup(dev->params, STONITH_ATTR_HOSTCHECK);
if (check_type == NULL) {
if (g_hash_table_lookup(dev->params, STONITH_ATTR_HOSTLIST)) {
check_type = "static-list";
} else if (g_hash_table_lookup(dev->params, STONITH_ATTR_HOSTMAP)) {
check_type = "static-list";
} else if(is_set(dev->flags, st_device_supports_list)){
check_type = "dynamic-list";
} else if(is_set(dev->flags, st_device_supports_status)){
check_type = "status";
} else {
check_type = "none";
}
}
return check_type;
}
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) (GPid pid, int rc, const char *output,
gpointer 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);
}
gboolean
string_in_list(GListPtr list, const char *item)
{
int lpc = 0;
int max = g_list_length(list);
for (lpc = 0; lpc < max; lpc++) {
const char *value = g_list_nth_data(list, lpc);
if (safe_str_eq(item, value)) {
return TRUE;
} else {
crm_trace("%d: '%s' != '%s'", lpc, item, value);
}
}
return FALSE;
}
static void
status_search_cb(GPid pid, int rc, const char *output, gpointer 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;
}
dev->active_pid = 0;
mainloop_set_trigger(dev->work);
if (rc == 1 /* unknown */ ) {
crm_trace("Host %s is not known by %s", search->host, dev->id);
} else if (rc == 0 /* active */ || rc == 2 /* inactive */ ) {
crm_trace("Host %s is known by %s", search->host, dev->id);
can = TRUE;
} else {
crm_notice("Unknown result when testing if %s can fence %s: rc=%d", dev->id, search->host,
rc);
}
search_devices_record_result(search, dev->id, can);
}
static void
dynamic_list_search_cb(GPid pid, int rc, const char *output, gpointer 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;
}
dev->active_pid = 0;
mainloop_set_trigger(dev->work);
/* If we successfully got the targets earlier, don't disable. */
if (rc != 0 && !dev->targets) {
crm_notice("Disabling port list queries for %s (%d): %s", dev->id, rc, output);
/* Fall back to status */
g_hash_table_replace(dev->params, strdup(STONITH_ATTR_HOSTCHECK), strdup("status"));
g_list_free_full(dev->targets, free);
dev->targets = NULL;
} else if (!rc) {
crm_info("Refreshing port list for %s", dev->id);
g_list_free_full(dev->targets, free);
dev->targets = parse_host_list(output);
dev->targets_age = time(NULL);
}
if (dev->targets) {
const char *alias = g_hash_table_lookup(dev->aliases, search->host);
if (!alias) {
alias = search->host;
}
if (string_in_list(dev->targets, alias)) {
can_fence = TRUE;
}
}
search_devices_record_result(search, dev->id, can_fence);
}
/*!
* \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)
{
char *key = NULL;
char *value = NULL;
GHashTableIter gIter;
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 (safe_str_neq(dup->agent, device->agent)) {
crm_trace("Different agent: %s != %s", dup->agent, device->agent);
return NULL;
}
/* Use calculate_operation_digest() here? */
g_hash_table_iter_init(&gIter, device->params);
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(dup->params, key);
if (!other_value || safe_str_neq(other_value, value)) {
crm_trace("Different value for %s: %s != %s", key, other_value, value);
return NULL;
}
}
}
crm_trace("Match");
return dup;
}
int
stonith_device_register(xmlNode * msg, const char **desc, gboolean from_cib)