diff --git a/fencing/commands.c b/fencing/commands.c
index cdd935f152..aac1c9af0b 100644
--- a/fencing/commands.c
+++ b/fencing/commands.c
@@ -1,1530 +1,1543 @@
/*
* 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/cluster/internal.h>
#include <crm/common/mainloop.h>
#include <crm/stonith-ng.h>
#include <crm/fencing/internal.h>
#include <crm/common/xml.h>
#include <internal.h>
GHashTable *device_list = NULL;
GHashTable *topology = NULL;
GList *cmd_list = NULL;
static int active_children = 0;
static gboolean stonith_device_dispatch(gpointer user_data);
static void st_child_done(GPid pid, int rc, const char *output, gpointer user_data);
typedef struct async_command_s {
int id;
int pid;
int fd_stdout;
int options;
int default_timeout;
int timeout;
char *op;
char *origin;
char *client;
char *client_name;
- char *remote;
+ char *remote_op_id;
char *victim;
char *action;
char *device;
char *mode;
GListPtr device_list;
GListPtr device_next;
void (*done)(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 int
get_action_timeout(stonith_device_t *device, const char *action, int default_timeout)
{
char buffer[512] = { 0, };
char *value = NULL;
CRM_CHECK(action != NULL, return default_timeout);
if (!device->params) {
return default_timeout;
}
snprintf(buffer, sizeof(buffer) - 1, "pcmk_%s_timeout", action);
value = g_hash_table_lookup(device->params, buffer);
if (!value) {
return default_timeout;
}
return atoi(value);
}
static void free_async_command(async_command_t *cmd)
{
if (!cmd) {
return;
}
cmd_list = g_list_remove(cmd_list, cmd);
g_list_free(cmd->device_list);
free(cmd->device);
free(cmd->action);
free(cmd->victim);
- free(cmd->remote);
+ 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;
cmd->origin = crm_element_value_copy(msg, F_ORIG);
- cmd->remote = crm_element_value_copy(msg, F_STONITH_REMOTE);
+ 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_list = g_list_append(cmd_list, cmd);
return cmd;
}
static int stonith_manual_ack(xmlNode *msg, remote_fencing_op_t *op)
{
async_command_t *cmd = create_async_command(msg);
xmlNode *dev = get_xpath_object("//@"F_STONITH_TARGET, msg, LOG_ERR);
if(cmd == NULL) {
return -EINVAL;
}
cmd->device = strdup("manual_ack");
- cmd->remote = strdup(op->id);
+ cmd->remote_op_id = strdup(op->id);
crm_notice("Injecting manual confirmation that %s is safely off/down",
crm_element_value(dev, F_STONITH_TARGET));
st_child_done(0, 0, NULL, cmd);
return pcmk_ok;
}
static gboolean stonith_device_execute(stonith_device_t *device)
{
int rc = 0;
int exec_rc = 0;
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;
device->pending_ops = g_list_remove_link(device->pending_ops, first);
cmd = first->data;
g_list_free_1(first);
}
if(cmd == NULL) {
crm_trace("Nothing further to do for %s", device->id);
return TRUE;
}
action = stonith_action_create(device->agent,
cmd->action,
cmd->victim,
cmd->timeout,
device->params,
device->aliases);
exec_rc = stonith_action_execute_async(action, (void *) cmd, st_child_done);
if(exec_rc > 0) {
crm_debug("Operation %s%s%s on %s now running with pid=%d, timeout=%dms",
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 (%d/%d)",
cmd->action, cmd->victim?" for node ":"", cmd->victim?cmd->victim:"",
device->id, exec_rc, rc);
st_child_done(0, rc<0?rc:exec_rc, NULL, cmd);
}
return TRUE;
}
static gboolean stonith_device_dispatch(gpointer user_data)
{
return stonith_device_execute(user_data);
}
static void schedule_stonith_command(async_command_t *cmd, stonith_device_t *device)
{
CRM_CHECK(cmd != NULL, return);
CRM_CHECK(device != NULL, return);
if (cmd->device) {
free(cmd->device);
}
cmd->device = strdup(device->id);
cmd->timeout = get_action_timeout(device, cmd->action, cmd->default_timeout);
- crm_debug("Scheduling %s on %s for %s (timeout=%dms)", cmd->action, device->id,
- cmd->remote?cmd->remote:cmd->client, cmd->timeout);
+ if (cmd->remote_op_id) {
+ crm_debug("Scheduling %s on %s for remote peer %s with op id (%s) (timeout=%dms)",
+ cmd->action,
+ device->id,
+ cmd->origin,
+ cmd->remote_op_id,
+ cmd->timeout);
+ } else {
+ crm_debug("Scheduling %s on %s for %s (timeout=%dms)",
+ cmd->action,
+ device->id,
+ cmd->client,
+ cmd->timeout);
+ }
+
device->pending_ops = g_list_append(device->pending_ops, cmd);
mainloop_set_trigger(device->work);
}
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);
st_child_done(0, -ENODEV, NULL, cmd);
free_async_command(cmd);
}
g_list_free(device->pending_ops);
g_list_free_full(device->targets, free);
free(device->namespace);
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_str_hash, g_str_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, GListPtr *output)
{
int lpc = 0;
int max = 0;
int last = 0;
if(line) {
max = strlen(line);
} else {
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: %s", 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] == 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;
line = calloc(1, 2 + lpc - last);
snprintf(line, 1 + lpc - last, "%s", hosts+last);
parse_host_line(line, &output);
free(line);
last = lpc + 1;
}
}
return output;
}
static stonith_device_t *build_device_from_xml(xmlNode *msg)
{
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);
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 {
check_type = "dynamic-list";
}
}
return check_type;
}
static void
update_dynamic_list(stonith_device_t *dev)
{
time_t now = time(NULL);
/* Host/alias must be in the list output to be eligable 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->targets_age < 0) {
crm_trace("Port list queries disabled for %s", dev->id);
} else if(dev->targets == NULL || dev->targets_age + 60 < now) {
stonith_action_t *action = NULL;
char *output = NULL;
int rc = pcmk_ok;
int exec_rc = pcmk_ok;
if(dev->active_pid != 0) {
crm_notice("Port list query can not execute because device is busy, using cache: %s",
dev->targets ? "YES" : "NO");
return;
}
action = stonith_action_create(dev->agent, "list", NULL, 5, dev->params, NULL);
exec_rc = stonith_action_execute(action, &rc, &output);
if(rc != 0 && dev->active_pid == 0) {
/* This device probably only supports a single
* connection, which appears to already be in use,
* likely involved in a montior or (less likely)
* metadata operation.
*
* Avoid disabling port list queries in the hope that
* the op would succeed next time
*/
crm_info("Couldn't query ports for %s. Call failed with rc=%d and active_pid=%d: %s",
dev->agent, rc, dev->active_pid, output);
} else if(exec_rc < 0 || rc != 0) {
crm_notice("Disabling port list queries for %s (%d/%d): %s",
dev->id, exec_rc, rc, output);
dev->targets_age = -1;
/* 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 {
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 = now;
}
free(output);
}
}
int stonith_device_register(xmlNode *msg, const char **desc)
{
const char *value = NULL;
stonith_device_t *device = build_device_from_xml(msg);
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));
value = target_list_type(device);
if (safe_str_eq(value, "dynamic-list")) {
/* set the dynamic list during the register to guarantee we have
* targets cached */
update_dynamic_list(device);
}
g_hash_table_replace(device_list, device->id, device);
crm_notice("Added '%s' to the device list (%d active devices)", device->id, g_hash_table_size(device_list));
if(desc) {
*desc = device->id;
}
return pcmk_ok;
}
static int stonith_device_remove(xmlNode *msg, const char **desc)
{
xmlNode *dev = get_xpath_object("//"F_STONITH_DEVICE, msg, LOG_ERR);
const char *id = crm_element_value(dev, XML_ATTR_ID);
if(g_hash_table_remove(device_list, id)) {
crm_info("Removed '%s' from the device list (%d active devices)",
id, g_hash_table_size(device_list));
} else {
crm_info("Device '%s' not found (%d active devices)",
id, g_hash_table_size(device_list));
}
if(desc) {
*desc = id;
}
return pcmk_ok;
}
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;
}
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->node);
free(tp);
}
int stonith_level_register(xmlNode *msg, char **desc)
{
int id = 0;
int rc = pcmk_ok;
xmlNode *child = NULL;
xmlNode *level = get_xpath_object("//"F_STONITH_LEVEL, msg, LOG_ERR);
const char *node = crm_element_value(level, F_STONITH_TARGET);
stonith_topology_t *tp = g_hash_table_lookup(topology, node);
crm_element_value_int(level, XML_ATTR_ID, &id);
if(desc) {
*desc = g_strdup_printf("%s[%d]", node, id);
}
if(id <= 0 || id >= ST_LEVEL_MAX) {
return -EINVAL;
}
if(tp == NULL) {
tp = calloc(1, sizeof(stonith_topology_t));
tp->node = strdup(node);
g_hash_table_replace(topology, tp->node, tp);
crm_trace("Added %s to the topology (%d active entries)", node, g_hash_table_size(topology));
}
if(tp->levels[id] != NULL) {
crm_info("Adding to the existing %s[%d] topology entry (%d active entries)", node, id, count_active_levels(tp));
}
for (child = __xml_first_child(level); child != NULL; child = __xml_next(child)) {
const char *device = ID(child);
crm_trace("Adding device '%s' for %s (%d)", device, node, id);
tp->levels[id] = g_list_append(tp->levels[id], strdup(device));
}
crm_info("Node %s has %d active fencing levels", node, count_active_levels(tp));
return rc;
}
int stonith_level_remove(xmlNode *msg, char **desc)
{
int id = 0;
xmlNode *level = get_xpath_object("//"F_STONITH_LEVEL, msg, LOG_ERR);
const char *node = crm_element_value(level, F_STONITH_TARGET);
stonith_topology_t *tp = g_hash_table_lookup(topology, node);
if(desc) {
*desc = g_strdup_printf("%s[%d]", node, id);
}
crm_element_value_int(level, XML_ATTR_ID, &id);
if(tp == NULL) {
crm_info("Node %s not found (%d active entries)",
node, g_hash_table_size(topology));
return pcmk_ok;
} else if(id < 0 || id >= ST_LEVEL_MAX) {
return -EINVAL;
}
if(id == 0 && g_hash_table_remove(topology, node)) {
crm_info("Removed all %s related entries from the topology (%d active entries)",
node, g_hash_table_size(topology));
} else if(id > 0 && tp->levels[id] != NULL) {
g_list_free_full(tp->levels[id], free);
tp->levels[id] = NULL;
crm_info("Removed entry '%d' from %s's topology (%d active entries remaining)",
id, node, count_active_levels(tp));
}
return pcmk_ok;
}
static 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;
}
}
return FALSE;
}
static int stonith_device_action(xmlNode *msg, char **output)
{
int rc = pcmk_ok;
xmlNode *dev = get_xpath_object("//"F_STONITH_DEVICE, msg, LOG_ERR);
const char *id = crm_element_value(dev, F_STONITH_DEVICE);
async_command_t *cmd = NULL;
stonith_device_t *device = NULL;
if(id) {
crm_trace("Looking for '%s'", id);
device = g_hash_table_lookup(device_list, id);
}
if(device) {
cmd = create_async_command(msg);
if(cmd == NULL) {
free_device(device);
return -EPROTO;
}
schedule_stonith_command(cmd, device);
rc = -EINPROGRESS;
} else {
crm_info("Device %s not found", id?id:"<none>");
rc = -ENODEV;
}
return rc;
}
static gboolean can_fence_host_with_device(stonith_device_t *dev, const char *host)
{
gboolean can = FALSE;
const char *alias = host;
const char *check_type = NULL;
if(dev == NULL) {
return FALSE;
} else if(host == NULL) {
return TRUE;
}
if(g_hash_table_lookup(dev->aliases, host)) {
alias = g_hash_table_lookup(dev->aliases, host);
}
check_type = target_list_type(dev);
if(safe_str_eq(check_type, "none")) {
can = TRUE;
} else if(safe_str_eq(check_type, "static-list")) {
/* 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(string_in_list(dev->targets, host)) {
can = TRUE;
} else if(g_hash_table_lookup(dev->params, STONITH_ATTR_HOSTMAP)
&& g_hash_table_lookup(dev->aliases, host)) {
can = TRUE;
}
} else if(safe_str_eq(check_type, "dynamic-list")) {
update_dynamic_list(dev);
if(string_in_list(dev->targets, alias)) {
can = TRUE;
}
} else if(safe_str_eq(check_type, "status")) {
int rc = 0;
int exec_rc = 0;
stonith_action_t *action = NULL;
/* Run the status operation for the device/target combination
* Will cause problems if the device doesn't return 2 for down'd nodes or
* (for virtual nodes) if the device doesn't return 1 for guests that
* have been moved to another host
*/
action = stonith_action_create(dev->agent, "status", host, 5, dev->params, dev->aliases);
exec_rc = stonith_action_execute(action, &rc, NULL);
if(exec_rc != 0) {
crm_err("Could not invoke %s: rc=%d", dev->id, exec_rc);
} else if(rc == 1 /* unkown */) {
crm_trace("Host %s is not known by %s", host, dev->id);
} else if(rc == 0 /* active */ || rc == 2 /* inactive */) {
can = TRUE;
} else {
crm_notice("Unkown result when testing if %s can fence %s: rc=%d", dev->id, host, rc);
}
} else {
crm_err("Unknown check type: %s", check_type);
}
if(safe_str_eq(host, alias)) {
crm_info("%s can%s fence %s: %s", dev->id, can?"":" not", host, check_type);
} else {
crm_info("%s can%s fence %s (aka. '%s'): %s", dev->id, can?"":" not", host, alias, check_type);
}
return can;
}
struct device_search_s
{
const char *host;
GListPtr capable;
};
static void search_devices(
gpointer key, gpointer value, gpointer user_data)
{
stonith_device_t *dev = value;
struct device_search_s *search = user_data;
if(can_fence_host_with_device(dev, search->host)) {
search->capable = g_list_append(search->capable, value);
}
}
static int stonith_query(xmlNode *msg, xmlNode **list)
{
struct device_search_s search;
int available_devices = 0;
const char *action = NULL;
xmlNode *dev = get_xpath_object("//@"F_STONITH_ACTION, msg, LOG_DEBUG_3);
search.host = NULL;
search.capable = NULL;
if(dev) {
const char *device = crm_element_value(dev, F_STONITH_DEVICE);
search.host = crm_element_value(dev, F_STONITH_TARGET);
if(device && safe_str_eq(device, "manual_ack")) {
/* No query necessary */
if(list) {
*list = NULL;
}
return pcmk_ok;
}
action = crm_element_value(dev, F_STONITH_ACTION);
}
crm_log_xml_debug(msg, "Query");
g_hash_table_foreach(device_list, search_devices, &search);
available_devices = g_list_length(search.capable);
if(search.host) {
crm_debug("Found %d matching devices for '%s'",
available_devices, search.host);
} else {
crm_debug("%d devices installed", available_devices);
}
/* Pack the results into data */
if(list) {
GListPtr lpc = NULL;
*list = create_xml_node(NULL, __FUNCTION__);
crm_xml_add(*list, F_STONITH_TARGET, search.host);
crm_xml_add_int(*list, "st-available-devices", available_devices);
for(lpc = search.capable; lpc != NULL; lpc = lpc->next) {
stonith_device_t *device = (stonith_device_t*)lpc->data;
int action_specific_timeout = get_action_timeout(device, action, 0);
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);
if (action_specific_timeout) {
crm_xml_add_int(dev, F_STONITH_ACTION_TIMEOUT, action_specific_timeout);
}
if(search.host == NULL) {
xmlNode *attrs = create_xml_node(dev, XML_TAG_ATTRS);
g_hash_table_foreach(device->params, hash2field, attrs);
}
}
}
g_list_free(search.capable);
return available_devices;
}
static void log_operation(async_command_t *cmd, int rc, int pid, const char *next, const char *output)
{
if(rc == 0) {
next = NULL;
}
if(cmd->victim != NULL) {
do_crm_log(rc==0?LOG_NOTICE:LOG_ERR,
"Operation '%s' [%d] (call %d from %s) for host '%s' with device '%s' returned: %d (%s)%s%s",
cmd->action, pid, cmd->id, cmd->client_name, cmd->victim, cmd->device, rc, pcmk_strerror(rc),
next?". Trying: ":"", next?next:"");
} else {
do_crm_log_unlikely(rc==0?LOG_DEBUG:LOG_NOTICE,
"Operation '%s' [%d] for device '%s' returned: %d (%s)%s%s",
cmd->action, pid, cmd->device, rc, pcmk_strerror(rc), next?". Trying: ":"", next?next:"");
}
if(output) {
/* Logging the whole string confuses syslog when the string is xml */
char *local_copy = strdup(output);
int lpc = 0, last = 0, more = strlen(local_copy);
for(lpc = 0; lpc < more; lpc++) {
if(local_copy[lpc] == '\n' || local_copy[lpc] == 0) {
local_copy[lpc] = 0;
do_crm_log(rc==0?LOG_INFO:LOG_WARNING, "%s: %s",
cmd->device, local_copy+last);
last = lpc+1;
}
}
crm_debug("%s: %s (total %d bytes)", cmd->device, local_copy+last, more);
free(local_copy);
}
}
static void
stonith_send_async_reply(async_command_t *cmd, const char *output, int rc, GPid pid)
{
xmlNode *reply = NULL;
gboolean bcast = FALSE;
reply = stonith_construct_async_reply(cmd, output, NULL, rc);
if(safe_str_eq(cmd->action, "metadata")) {
/* Too verbose to log */
crm_trace("Metadata query for %s", cmd->device);
output = NULL;
} else if(crm_str_eq(cmd->action, "monitor", TRUE) ||
crm_str_eq(cmd->action, "list", TRUE) ||
crm_str_eq(cmd->action, "status", TRUE)) {
crm_trace("Never broadcast %s replies", cmd->action);
} else if(!stand_alone && safe_str_eq(cmd->origin, cmd->victim)) {
crm_trace("Broadcast %s reply for %s", cmd->action, cmd->victim);
crm_xml_add(reply, F_SUBTYPE, "broadcast");
bcast = TRUE;
}
log_operation(cmd, rc, pid, NULL, output);
crm_log_xml_trace(reply, "Reply");
if(bcast) {
crm_xml_add(reply, F_STONITH_OPERATION, T_STONITH_NOTIFY);
send_cluster_message(NULL, crm_msg_stonith_ng, reply, FALSE);
} else if(cmd->origin) {
crm_trace("Directed reply to %s", cmd->origin);
send_cluster_message(crm_get_peer(0, cmd->origin), crm_msg_stonith_ng, reply, FALSE);
} else {
crm_trace("Directed local %ssync reply to %s",
(cmd->options & st_opt_sync_call)?"":"a-", cmd->client_name);
do_local_reply(reply, cmd->client, cmd->options & st_opt_sync_call, FALSE);
}
if(stand_alone) {
/* Do notification with a clean data object */
xmlNode *notify_data = create_xml_node(NULL, T_STONITH_NOTIFY_FENCE);
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, cmd->device);
- crm_xml_add(notify_data, F_STONITH_REMOTE, cmd->remote);
+ 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(0, T_STONITH_NOTIFY_FENCE, rc, notify_data, NULL);
+ do_stonith_notify(0, T_STONITH_NOTIFY_FENCE, rc, notify_data);
}
free_xml(reply);
}
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 on %s", cmd->action, device->id);
device->pending_ops = g_list_remove(device->pending_ops, cmd);
}
}
#define READ_MAX 500
static void st_child_done(GPid pid, int rc, const char *output, gpointer user_data)
{
stonith_device_t *device = NULL;
async_command_t *cmd = user_data;
GListPtr gIter = NULL;
GListPtr gIterNext = NULL;
CRM_CHECK(cmd != NULL, return);
active_children--;
/* The device is ready to do something else now */
device = g_hash_table_lookup(device_list, cmd->device);
if(device) {
device->active_pid = 0;
mainloop_set_trigger(device->work);
}
crm_trace("Operation %s on %s completed with rc=%d (%d remaining)",
cmd->action, cmd->device, rc, g_list_length(cmd->device_next));
if(rc != 0 && cmd->device_next) {
stonith_device_t *dev = cmd->device_next->data;
log_operation(cmd, rc, pid, dev->id, output);
cmd->device_next = cmd->device_next->next;
schedule_stonith_command(cmd, dev);
/* Prevent cmd from being freed */
cmd = NULL;
goto done;
}
if(rc > 0) {
rc = -pcmk_err_generic;
}
stonith_send_async_reply(cmd, output, rc, pid);
if(rc != 0) {
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(safe_str_eq(cmd->client, cmd_other->client) ||
safe_str_neq(cmd->victim, cmd_other->victim) ||
safe_str_neq(cmd->action, cmd_other->action) ||
safe_str_neq(cmd->device, cmd_other->device)) {
continue;
}
crm_notice("Merging stonith action %s for node %s originating from client %s with identical stonith 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);
stonith_send_async_reply(cmd_other, output, rc, pid);
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 = a;
if(dev_a->priority > dev_b->priority) {
return -1;
} else if(dev_a->priority < dev_b->priority) {
return 1;
}
return 0;
}
static int stonith_fence(xmlNode *msg)
{
int options = 0;
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);
}
} else {
struct device_search_s search;
search.capable = NULL;
search.host = crm_element_value(dev, F_STONITH_TARGET);
crm_element_value_int(msg, F_STONITH_CALLOPTS, &options);
if(options & st_opt_cs_nodeid) {
int nodeid = crm_atoi(search.host, NULL);
crm_node_t *node = crm_get_peer(nodeid, NULL);
if(node) {
search.host = node->uname;
}
}
g_hash_table_foreach(device_list, search_devices, &search);
crm_info("Found %d matching devices for '%s'", g_list_length(search.capable), search.host);
if(g_list_length(search.capable) > 0) {
/* Order based on priority */
search.capable = g_list_sort(search.capable, sort_device_priority);
device = search.capable->data;
if(g_list_length(search.capable) > 1) {
cmd->device_list = search.capable;
cmd->device_next = cmd->device_list->next;
} else {
g_list_free(search.capable);
}
}
}
if(device) {
schedule_stonith_command(cmd, device);
return -EINPROGRESS;
}
free_async_command(cmd);
return -EHOSTUNREACH;
}
xmlNode *stonith_construct_reply(xmlNode *request, char *output, xmlNode *data, int rc)
{
int lpc = 0;
xmlNode *reply = NULL;
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,
+ F_STONITH_REMOTE_OP_ID,
F_STONITH_CALLOPTS
};
crm_trace("Creating a basic reply");
reply = create_xml_node(NULL, T_STONITH_REPLY);
crm_xml_add(reply, "st_origin", __FUNCTION__);
crm_xml_add(reply, F_TYPE, T_STONITH_NG);
crm_xml_add(reply, "st_output", output);
crm_xml_add_int(reply, F_STONITH_RC, rc);
CRM_CHECK(request != NULL, crm_warn("Can't create a sane reply"); return reply);
for(lpc = 0; lpc < DIMOF(names); lpc++) {
name = names[lpc];
value = crm_element_value(request, name);
crm_xml_add(reply, name, value);
}
if(data != NULL) {
crm_trace("Attaching reply output");
add_message_xml(reply, F_STONITH_CALLDATA, data);
}
return reply;
}
static xmlNode *
stonith_construct_async_reply(async_command_t *cmd, const char *output, xmlNode *data, int rc)
{
xmlNode *reply = NULL;
crm_trace("Creating a basic reply");
reply = create_xml_node(NULL, T_STONITH_REPLY);
crm_xml_add(reply, "st_origin", __FUNCTION__);
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, cmd->remote);
+ 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, rc);
crm_xml_add(reply, "st_output", output);
if(data != NULL) {
crm_info("Attaching reply output");
add_message_xml(reply, F_STONITH_CALLDATA, data);
}
return reply;
}
/*!
* \internal
* \brief Determine if we need to use an alternate node to
* fence the target. If so return that node's uname
*
* \retval NULL, no alternate host
* \retval uname, uname of alternate host to use
*/
static const char *
check_alternate_host(const char *target)
{
const char *alternate_host = NULL;
if(g_hash_table_lookup(topology, target) && safe_str_eq(target, stonith_our_uname)) {
GHashTableIter gIter;
crm_node_t *entry = NULL;
int membership = crm_proc_plugin | crm_proc_heartbeat | crm_proc_cpg;
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(entry->uname
&& (entry->processes & membership)
&& safe_str_neq(entry->uname, target)) {
alternate_host = entry->uname;
break;
}
}
if(alternate_host == NULL) {
crm_err("No alternate host available to handle complex self fencing request");
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;
}
static int
-handle_request(stonith_client_t *client, uint32_t id, uint32_t flags, xmlNode *request, const char *remote)
+handle_request(stonith_client_t *client, uint32_t id, uint32_t flags, xmlNode *request, const char *remote_peer)
{
int call_options = 0;
int rc = -EOPNOTSUPP;
gboolean always_reply = FALSE;
xmlNode *reply = NULL;
xmlNode *data = NULL;
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(is_set(call_options, st_opt_sync_call)) {
CRM_ASSERT(client == NULL || client->request_id == id);
}
if(crm_str_eq(op, CRM_OP_REGISTER, TRUE)) {
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);
crm_ipcs_send(client->channel, id, reply, FALSE);
client->request_id = 0;
free_xml(reply);
return 0;
} else if(crm_str_eq(op, STONITH_OP_EXEC, TRUE)) {
rc = stonith_device_action(request, &output);
} else if (crm_str_eq(op, STONITH_OP_TIMEOUT_UPDATE, TRUE)) {
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);
return 0;
} else if(crm_str_eq(op, STONITH_OP_QUERY, TRUE)) {
- if (remote) {
+ if (remote_peer) {
create_remote_stonith_op(client_id, request, TRUE); /* Record it for the future notification */
}
rc = stonith_query(request, &data);
always_reply = TRUE;
if(!data) {
return 0;
}
} else if(crm_str_eq(op, T_STONITH_NOTIFY, TRUE)) {
const char *flag_name = NULL;
CRM_ASSERT(client);
flag_name = crm_element_value(request, F_STONITH_NOTIFY_ACTIVATE);
if(flag_name) {
crm_debug("Setting %s callbacks for %s (%s): ON",
flag_name, client->name, client->id);
client->flags |= get_stonith_flag(flag_name);
}
flag_name = crm_element_value(request, F_STONITH_NOTIFY_DEACTIVATE);
if(flag_name) {
crm_debug("Setting %s callbacks for %s (%s): off",
flag_name, client->name, client->id);
client->flags |= get_stonith_flag(flag_name);
}
if(flags & crm_ipc_client_response) {
crm_ipcs_send_ack(client->channel, id, "ack", __FUNCTION__, __LINE__);
client->request_id = 0;
}
return 0;
} else if(crm_str_eq(op, STONITH_OP_RELAY, TRUE)) {
xmlNode *dev = get_xpath_object("//@"F_STONITH_TARGET, request, LOG_TRACE);
crm_notice("Peer %s has received a forwarded fencing request from %s to fence (%s) peer %s",
stonith_our_uname,
- client ? client->name : remote,
+ client ? client->name : remote_peer,
crm_element_value(dev, F_STONITH_ACTION),
crm_element_value(dev, F_STONITH_TARGET));
if(initiate_remote_stonith_op(NULL, request, FALSE) != NULL) {
rc = -EINPROGRESS;
}
} else if(crm_str_eq(op, STONITH_OP_FENCE, TRUE)) {
- if(remote || stand_alone) {
+ if(remote_peer || stand_alone) {
rc = stonith_fence(request);
} else if(call_options & st_opt_manual_ack) {
remote_fencing_op_t *rop = initiate_remote_stonith_op(client, request, TRUE);
rc = stonith_manual_ack(request, rop);
} 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.%.8s wants to fence (%s) '%s' with device '%s'",
client->name, client->id, action, target, device?device:"(any)");
crm_element_value_int(dev, F_STONITH_TOLERANCE, &tolerance);
if(stonith_check_fence_tolerance(tolerance, target, action)) {
rc = 0;
goto done;
}
} else {
crm_notice("Peer %s wants to fence (%s) '%s' with device '%s'",
- remote, action, target, device?device:"(any)");
+ remote_peer, action, target, device?device:"(any)");
}
alternate_host = check_alternate_host(target);
if(alternate_host) {
crm_notice("Forwarding complex self fencing request to peer %s", alternate_host);
crm_xml_add(request, F_STONITH_OPERATION, STONITH_OP_RELAY);
crm_xml_add(request, F_STONITH_CLIENTID, client->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 = -EINPROGRESS;
}
}
} else if (crm_str_eq(op, STONITH_OP_FENCE_HISTORY, TRUE)) {
rc = stonith_fence_history(request, &data);
always_reply = TRUE;
} else if(crm_str_eq(op, STONITH_OP_DEVICE_ADD, TRUE)) {
const char *id = NULL;
xmlNode *notify_data = create_xml_node(NULL, op);
rc = stonith_device_register(request, &id);
crm_xml_add(notify_data, F_STONITH_DEVICE, id);
crm_xml_add_int(notify_data, F_STONITH_ACTIVE, g_hash_table_size(device_list));
- do_stonith_notify(call_options, op, rc, notify_data, NULL);
+ do_stonith_notify(call_options, op, rc, notify_data);
free_xml(notify_data);
} else if(crm_str_eq(op, STONITH_OP_DEVICE_DEL, TRUE)) {
const char *id = NULL;
xmlNode *notify_data = create_xml_node(NULL, op);
rc = stonith_device_remove(request, &id);
crm_xml_add(notify_data, F_STONITH_DEVICE, id);
crm_xml_add_int(notify_data, F_STONITH_ACTIVE, g_hash_table_size(device_list));
- do_stonith_notify(call_options, op, rc, notify_data, NULL);
+ do_stonith_notify(call_options, op, rc, notify_data);
free_xml(notify_data);
} else if(crm_str_eq(op, STONITH_OP_LEVEL_ADD, TRUE)) {
char *id = NULL;
xmlNode *notify_data = create_xml_node(NULL, op);
rc = stonith_level_register(request, &id);
crm_xml_add(notify_data, F_STONITH_DEVICE, id);
crm_xml_add_int(notify_data, F_STONITH_ACTIVE, g_hash_table_size(topology));
- do_stonith_notify(call_options, op, rc, notify_data, NULL);
+ do_stonith_notify(call_options, op, rc, notify_data);
free_xml(notify_data);
} else if(crm_str_eq(op, STONITH_OP_LEVEL_DEL, TRUE)) {
char *id = NULL;
xmlNode *notify_data = create_xml_node(NULL, op);
rc = stonith_level_remove(request, &id);
crm_xml_add(notify_data, F_STONITH_DEVICE, id);
crm_xml_add_int(notify_data, F_STONITH_ACTIVE, g_hash_table_size(topology));
- do_stonith_notify(call_options, op, rc, notify_data, NULL);
+ do_stonith_notify(call_options, op, rc, notify_data);
free_xml(notify_data);
} else if(crm_str_eq(op, STONITH_OP_CONFIRM, TRUE)) {
async_command_t *cmd = create_async_command(request);
xmlNode *reply = stonith_construct_async_reply(cmd, NULL, NULL, 0);
crm_xml_add(reply, F_STONITH_OPERATION, T_STONITH_NOTIFY);
crm_notice("Broadcasting manual fencing confirmation for node %s", cmd->victim);
send_cluster_message(NULL, crm_msg_stonith_ng, reply, FALSE);
free_async_command(cmd);
free_xml(reply);
} else {
- crm_err("Unknown %s from %s", op, client ? client->name : remote);
+ crm_err("Unknown %s from %s", op, client ? client->name : remote_peer);
crm_log_xml_warn(request, "UnknownOp");
}
done:
if (rc == -EINPROGRESS) {
/* Nothing (yet) */
- } else if(remote) {
+ } else if(remote_peer) {
reply = stonith_construct_reply(request, output, data, rc);
- send_cluster_message(crm_get_peer(0, remote), crm_msg_stonith_ng, reply, FALSE);
+ send_cluster_message(crm_get_peer(0, remote_peer), crm_msg_stonith_ng, reply, FALSE);
free_xml(reply);
} else if(rc <= pcmk_ok || always_reply) {
reply = stonith_construct_reply(request, output, data, rc);
- do_local_reply(reply, client_id, call_options & st_opt_sync_call, remote!=NULL);
+ do_local_reply(reply, client_id, call_options & st_opt_sync_call, remote_peer!=NULL);
free_xml(reply);
}
free(output);
free_xml(data);
return rc;
}
static void
-handle_reply(stonith_client_t *client, xmlNode *request, const char *remote)
+handle_reply(stonith_client_t *client, xmlNode *request, const char *remote_peer)
{
const char *op = crm_element_value(request, F_STONITH_OPERATION);
if(crm_str_eq(op, STONITH_OP_QUERY, TRUE)) {
process_remote_stonith_query(request);
} else if(crm_str_eq(op, T_STONITH_NOTIFY, TRUE)) {
process_remote_stonith_exec(request);
} else if(crm_str_eq(op, STONITH_OP_FENCE, TRUE)) {
/* Reply to a complex fencing op */
process_remote_stonith_exec(request);
} else {
- crm_err("Unknown %s reply from %s", op, client ? client->name : remote);
+ crm_err("Unknown %s reply from %s", op, client ? client->name : remote_peer);
crm_log_xml_warn(request, "UnknownOp");
}
}
void
-stonith_command(stonith_client_t *client, uint32_t id, uint32_t flags, xmlNode *request, const char *remote)
+stonith_command(stonith_client_t *client, uint32_t id, uint32_t flags, xmlNode *request, const char *remote_peer)
{
int call_options = 0;
int rc = 0;
gboolean is_reply = FALSE;
const char *op = crm_element_value(request, F_STONITH_OPERATION);
if(get_xpath_object("//"T_STONITH_REPLY, request, LOG_DEBUG_3)) {
is_reply = TRUE;
}
crm_element_value_int(request, F_STONITH_CALLOPTS, &call_options);
crm_debug("Processing %s%s from %s (%16x)", op, is_reply?" reply":"",
- client?client->name:remote, call_options);
+ client?client->name:remote_peer, call_options);
if(is_set(call_options, st_opt_sync_call)) {
CRM_ASSERT(client == NULL || client->request_id == id);
}
if (is_reply) {
- handle_reply(client, request, remote);
+ handle_reply(client, request, remote_peer);
} else {
- rc = handle_request(client, id, flags, request, remote);
+ rc = handle_request(client, id, flags, request, remote_peer);
}
do_crm_log_unlikely(rc>0?LOG_DEBUG:LOG_INFO,"Processed %s%s from %s: %s (%d)", op, is_reply?" reply":"",
- client?client->name:remote, rc>0?"":pcmk_strerror(rc), rc);
+ client?client->name:remote_peer, rc>0?"":pcmk_strerror(rc), rc);
}
diff --git a/fencing/internal.h b/fencing/internal.h
index 96c887e96f..a06c0cb922 100644
--- a/fencing/internal.h
+++ b/fencing/internal.h
@@ -1,139 +1,160 @@
#include <crm/common/mainloop.h>
/*!
* \internal
* \brief Check to see if target was fenced in the last few seconds.
* \param tolerance, The number of seconds to look back in time
* \param target, The node to search for
* \param action, The action we want to match.
*
* \retval FALSE, not match
* \retval TRUE, fencing operation took place in the last 'tolerance' number of seconds.
*/
gboolean
stonith_check_fence_tolerance(int tolerance, const char *target, const char *action);
typedef struct stonith_device_s {
char *id;
char *agent;
char *namespace;
GListPtr targets;
time_t targets_age;
gboolean has_attr_map;
guint priority;
guint active_pid;
GHashTable *params;
GHashTable *aliases;
GList *pending_ops;
crm_trigger_t *work;
} stonith_device_t;
typedef struct stonith_client_s {
char *id;
char *name;
int pid;
int request_id;
char *channel_name;
qb_ipcs_connection_t *channel;
long long flags;
} stonith_client_t;
typedef struct remote_fencing_op_s {
+ /* The unique id associated with this operation */
char *id;
+ /*! The node this operation will fence */
char *target;
+ /*! The fencing action to perform on the target. (reboot, on, off) */
char *action;
- guint replies;
+ /*! Marks if the final notifications have been sent to local stonith clients. */
+ gboolean notify_sent;
+ /*! The number of query replies received */
+ guint replies;
/*! Does this node own control of this operation */
gboolean owner;
/*! After query is complete, This the high level timer that expires the entire operation */
guint op_timer_total;
/*! This timer expires the current fencing request. Many fencing
* requests may exist in a single operation */
guint op_timer_one;
/*! This timer expires the query request sent out to determine
* what nodes are contain what devices, and who those devices can fence */
guint query_timer;
/*! This is the default timeout to use for each fencing device if no
* custom timeout is received in the query. */
gint base_timeout;
/*! This is the calculated total timeout an operation can take before
* expiring. This is calculated by adding together all the timeout
* values associated with the devices this fencing operation may call */
gint total_timeout;
+ /*! Delegate is the node being asked to perform a fencing action
+ * on behalf of the node that owns the remote operation. Some operations
+ * will involve multiple delegates. This value represents the final delegate
+ * that is used. */
char *delegate;
+ /*! The point at which the remote operation completed */
time_t completed;
+ /*! The stonith_call_options associated with this remote operation */
long long call_options;
+ /*! The current state of the remote operation. This indicates
+ * what phase the op is in, query, exec, done, duplicate, failed. */
enum op_state state;
+ /*! The node that owns the remote operation */
char *originator;
+ /*! The local client id that initiated the fencing request */
char *client_id;
+ /*! The name of client that initiated the fencing request */
char *client_name;
+ /*! List of the received query results for all the nodes in the cpg group */
GListPtr query_results;
+ /*! The original request that initiated the remote stonith operation */
xmlNode *request;
+ /*! The current topology level being executed */
guint level;
- int topology_device_number;
-
+ /*! The device list of all the devices at the current executing topology level. */
GListPtr devices;
+
+ /*! List of duplicate operations attached to this operation. Once this operation
+ * completes, the duplicate operations will be closed out as well. */
GListPtr duplicates;
- gboolean notify_sent;
} remote_fencing_op_t;
typedef struct stonith_topology_s {
char *node;
GListPtr levels[ST_LEVEL_MAX];
} stonith_topology_t;
extern long long get_stonith_flag(const char *name);
-extern void stonith_command(stonith_client_t * client, uint32_t id, uint32_t flags, xmlNode * op_request, const char *remote);
+extern void stonith_command(stonith_client_t * client, uint32_t id, uint32_t flags, xmlNode * op_request, const char *remote_peer);
extern int stonith_device_register(xmlNode * msg, const char **desc);
extern int stonith_level_register(xmlNode * msg, char **desc);
extern int stonith_level_remove(xmlNode * msg, char **desc);
extern void do_local_reply(xmlNode * notify_src, const char *client_id, gboolean sync_reply,
gboolean from_peer);
extern xmlNode *stonith_construct_reply(xmlNode * request, char *output, xmlNode * data, int rc);
void
do_stonith_async_timeout_update(const char *client, const char *call_id, int timeout);
-extern void do_stonith_notify(int options, const char *type, int result, xmlNode * data, const char *remote);
+extern void do_stonith_notify(int options, const char *type, int result, xmlNode * data);
extern remote_fencing_op_t *initiate_remote_stonith_op(stonith_client_t * client, xmlNode * request,
gboolean manual_ack);
extern int process_remote_stonith_exec(xmlNode * msg);
extern int process_remote_stonith_query(xmlNode * msg);
extern void *create_remote_stonith_op(const char *client, xmlNode * request, gboolean peer);
extern int stonith_fence_history(xmlNode * msg, xmlNode ** output);
extern void free_device(gpointer data);
extern void free_topology_entry(gpointer data);
extern char *stonith_our_uname;
extern gboolean stand_alone;
extern GHashTable *device_list;
extern GHashTable *topology;
extern GHashTable *client_list;
diff --git a/fencing/main.c b/fencing/main.c
index f83653b76f..a2c30f6b01 100644
--- a/fencing/main.c
+++ b/fencing/main.c
@@ -1,942 +1,940 @@
/*
* 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/stat.h>
#include <unistd.h>
#include <sys/utsname.h>
#include <stdlib.h>
#include <errno.h>
#include <fcntl.h>
#include <crm/crm.h>
#include <crm/msg_xml.h>
#include <crm/common/ipc.h>
#include <crm/cluster/internal.h>
#include <crm/stonith-ng.h>
#include <crm/fencing/internal.h>
#include <crm/common/xml.h>
#include <crm/common/mainloop.h>
#include <crm/cib/internal.h>
#include <internal.h>
#include <standalone_config.h>
char *stonith_our_uname = NULL;
GMainLoop *mainloop = NULL;
GHashTable *client_list = NULL;
gboolean stand_alone = FALSE;
gboolean no_cib_connect = FALSE;
gboolean stonith_shutdown_flag = FALSE;
qb_ipcs_service_t *ipcs = NULL;
static void stonith_shutdown(int nsig);
static void stonith_cleanup(void);
static int32_t
st_ipc_accept(qb_ipcs_connection_t *c, uid_t uid, gid_t gid)
{
crm_trace("Connecting %p for uid=%d gid=%d", c, uid, gid);
if(stonith_shutdown_flag) {
crm_info("Ignoring new client [%d] during shutdown", crm_ipcs_client_pid(c));
return -EPERM;
}
return 0;
}
static void
st_ipc_created(qb_ipcs_connection_t *c)
{
stonith_client_t *new_client = NULL;
#if 0
struct qb_ipcs_stats srv_stats;
qb_ipcs_stats_get(s1, &srv_stats, QB_FALSE);
qb_log(LOG_INFO, "Connection created (active:%d, closed:%d)",
srv_stats.active_connections,
srv_stats.closed_connections);
#endif
new_client = calloc(1, sizeof(stonith_client_t));
new_client->channel = c;
new_client->pid = crm_ipcs_client_pid(c);
new_client->channel_name = strdup("ipc");
CRM_CHECK(new_client->id == NULL, free(new_client->id));
new_client->id = crm_generate_uuid();
crm_trace("Created channel %p for client %s", c, new_client->id);
/* make sure we can find ourselves later for sync calls
* redirected to the master instance
*/
g_hash_table_insert(client_list, new_client->id, new_client);
qb_ipcs_context_set(c, new_client);
CRM_ASSERT(qb_ipcs_context_get(c) != NULL);
}
/* Exit code means? */
static int32_t
st_ipc_dispatch(qb_ipcs_connection_t *c, void *data, size_t size)
{
uint32_t id = 0;
uint32_t flags = 0;
xmlNode *request = NULL;
stonith_client_t *client = (stonith_client_t*)qb_ipcs_context_get(c);
request = crm_ipcs_recv(c, data, size, &id, &flags);
if (request == NULL) {
crm_ipcs_send_ack(c, id, "nack", __FUNCTION__, __LINE__);
return 0;
}
CRM_CHECK(client != NULL, goto cleanup);
if(client->name == NULL) {
const char *value = crm_element_value(request, F_STONITH_CLIENTNAME);
if(value == NULL) {
value = "unknown";
}
client->name = g_strdup_printf("%s.%u", value, client->pid);
}
CRM_CHECK(client->id != NULL, crm_err("Invalid client: %p/%s", client, client->name); goto cleanup);
if(flags & crm_ipc_client_response) {
CRM_LOG_ASSERT(client->request_id == 0); /* This means the client has two synchronous events in-flight */
client->request_id = id; /* Reply only to the last one */
}
crm_xml_add(request, F_STONITH_CLIENTID, client->id);
crm_xml_add(request, F_STONITH_CLIENTNAME, client->name);
crm_xml_add(request, F_STONITH_CLIENTNODE, stonith_our_uname);
crm_log_xml_trace(request, "Client[inbound]");
stonith_command(client, id, flags, request, NULL);
cleanup:
if(client == NULL || client->id == NULL) {
crm_log_xml_notice(request, "Invalid client");
}
free_xml(request);
return 0;
}
/* Error code means? */
static int32_t
st_ipc_closed(qb_ipcs_connection_t *c)
{
stonith_client_t *client = (stonith_client_t*)qb_ipcs_context_get(c);
#if 0
qb_ipcs_stats_get(s1, &srv_stats, QB_FALSE);
qb_ipcs_connection_stats_get(c, &stats, QB_FALSE);
qb_log(LOG_INFO, "Connection to pid:%d destroyed (active:%d, closed:%d)",
stats.client_pid,
srv_stats.active_connections,
srv_stats.closed_connections);
qb_log(LOG_DEBUG, " Requests %"PRIu64"", stats.requests);
qb_log(LOG_DEBUG, " Responses %"PRIu64"", stats.responses);
qb_log(LOG_DEBUG, " Events %"PRIu64"", stats.events);
qb_log(LOG_DEBUG, " Send retries %"PRIu64"", stats.send_retries);
qb_log(LOG_DEBUG, " Recv retries %"PRIu64"", stats.recv_retries);
qb_log(LOG_DEBUG, " FC state %d", stats.flow_control_state);
qb_log(LOG_DEBUG, " FC count %"PRIu64"", stats.flow_control_count);
#endif
if (client == NULL) {
crm_err("No client");
return 0;
}
crm_trace("Cleaning up after client disconnect: %p/%s/%s", client, crm_str(client->name), client->id);
if(client->id != NULL) {
g_hash_table_remove(client_list, client->id);
}
/* 0 means: yes, go ahead and destroy the connection */
return 0;
}
static void
st_ipc_destroy(qb_ipcs_connection_t *c)
{
stonith_client_t *client = (stonith_client_t*)qb_ipcs_context_get(c);
/* Make sure the connection is fully cleaned up */
st_ipc_closed(c);
if(client == NULL) {
crm_trace("Nothing to destroy");
return;
}
crm_trace("Destroying %s (%p)", client->name, client);
free(client->name);
free(client->id);
free(client);
crm_trace("Done");
return;
}
static void
stonith_peer_callback(xmlNode * msg, void* private_data)
{
- const char *remote = crm_element_value(msg, F_ORIG);
+ const char *remote_peer = crm_element_value(msg, F_ORIG);
const char *op = crm_element_value(msg, F_STONITH_OPERATION);
if(crm_str_eq(op, "poke", TRUE)) {
return;
}
crm_log_xml_trace(msg, "Peer[inbound]");
- stonith_command(NULL, 0, 0, msg, remote);
+ stonith_command(NULL, 0, 0, msg, remote_peer);
}
#if SUPPORT_HEARTBEAT
static void
stonith_peer_hb_callback(HA_Message * msg, void* private_data)
{
xmlNode *xml = convert_ha_message(NULL, msg, __FUNCTION__);
stonith_peer_callback(xml, private_data);
free_xml(xml);
}
static void
stonith_peer_hb_destroy(gpointer user_data)
{
if(stonith_shutdown_flag) {
crm_info("Heartbeat disconnection complete... exiting");
} else {
crm_err("Heartbeat connection lost! Exiting.");
}
stonith_shutdown(0);
}
#endif
#if SUPPORT_COROSYNC
static gboolean stonith_peer_ais_callback(int kind, const char *from, const char *data)
{
xmlNode *xml = NULL;
if(kind == crm_class_cluster) {
xml = string2xml(data);
if(xml == NULL) {
goto bail;
}
crm_xml_add(xml, F_ORIG, from);
/* crm_xml_add_int(xml, F_SEQ, wrapper->id); */
stonith_peer_callback(xml, NULL);
}
free_xml(xml);
return TRUE;
bail:
crm_err("Invalid XML: '%.120s'", data);
return TRUE;
}
static void
stonith_peer_ais_destroy(gpointer user_data)
{
crm_err("AIS connection terminated");
stonith_shutdown(0);
}
#endif
void do_local_reply(xmlNode *notify_src, const char *client_id,
gboolean sync_reply, gboolean from_peer)
{
/* send callback to originating child */
stonith_client_t *client_obj = NULL;
int local_rc = pcmk_ok;
crm_trace("Sending response");
if(client_id != NULL) {
client_obj = g_hash_table_lookup(client_list, client_id);
} else {
crm_trace("No client to sent the response to."
" F_STONITH_CLIENTID not set.");
}
crm_trace("Sending callback to request originator");
if(client_obj == NULL) {
local_rc = -1;
} else {
int rid = 0;
if(sync_reply) {
CRM_LOG_ASSERT(client_obj->request_id);
rid = client_obj->request_id;
client_obj->request_id = 0;
crm_trace("Sending response %d to %s %s",
rid, client_obj->name, from_peer?"(originator of delegated request)":"");
} else {
crm_trace("Sending an event to %s %s",
client_obj->name, from_peer?"(originator of delegated request)":"");
}
local_rc = crm_ipcs_send(client_obj->channel, rid, notify_src, !sync_reply);
}
if(local_rc < pcmk_ok && client_obj != NULL) {
crm_warn("%sSync reply to %s failed: %s",
sync_reply?"":"A-",
client_obj?client_obj->name:"<unknown>", pcmk_strerror(local_rc));
}
}
long long get_stonith_flag(const char *name)
{
if(safe_str_eq(name, T_STONITH_NOTIFY_FENCE)) {
return 0x01;
} else if(safe_str_eq(name, STONITH_OP_DEVICE_ADD)) {
return 0x04;
} else if(safe_str_eq(name, STONITH_OP_DEVICE_DEL)) {
return 0x10;
}
return 0;
}
static void
stonith_notify_client(gpointer key, gpointer value, gpointer user_data)
{
xmlNode *update_msg = user_data;
stonith_client_t *client = value;
const char *type = NULL;
CRM_CHECK(client != NULL, return);
CRM_CHECK(update_msg != NULL, return);
type = crm_element_value(update_msg, F_SUBTYPE);
CRM_CHECK(type != NULL, crm_log_xml_err(update_msg, "notify"); return);
if(client->channel == NULL) {
crm_trace("Skipping client with NULL channel");
return;
} else if(client->name == NULL) {
crm_trace("Skipping unnammed client / comamnd channel");
return;
}
if(client->flags & get_stonith_flag(type)) {
int rc = crm_ipcs_send(client->channel, 0, update_msg, crm_ipc_server_event|crm_ipc_server_error);
if(rc <= 0) {
crm_warn("%s notification of client %s.%.6s failed: %s (%d)",
type, client->name, client->id, pcmk_strerror(rc), rc);
} else {
crm_trace("Sent %s notification to client %s.%.6s", type, client->name, client->id);
}
}
}
void
do_stonith_async_timeout_update(const char *client_id, const char *call_id, int timeout)
{
stonith_client_t *client = NULL;
xmlNode *notify_data = NULL;
if (!timeout || !call_id || !client_id) {
return;
}
client = g_hash_table_lookup(client_list, client_id);
if (!client) {
return;
}
notify_data = create_xml_node(NULL, T_STONITH_TIMEOUT_VALUE);
crm_xml_add(notify_data, F_TYPE, T_STONITH_TIMEOUT_VALUE);
crm_xml_add(notify_data, F_STONITH_CALLID, call_id);
crm_xml_add_int(notify_data, F_STONITH_TIMEOUT, timeout);
crm_trace("timeout update is %d for client %s and call id %s", timeout, client_id, call_id);
if (client->channel) {
crm_ipcs_send(client->channel, 0, notify_data, crm_ipc_server_event);
}
free_xml(notify_data);
}
void
-do_stonith_notify(
- int options, const char *type, int result, xmlNode *data,
- const char *remote)
+do_stonith_notify(int options, const char *type, int result, xmlNode *data)
{
/* TODO: Standardize the contents of data */
xmlNode *update_msg = create_xml_node(NULL, "notify");
CRM_CHECK(type != NULL, ;);
crm_xml_add(update_msg, F_TYPE, T_STONITH_NOTIFY);
crm_xml_add(update_msg, F_SUBTYPE, type);
crm_xml_add(update_msg, F_STONITH_OPERATION, type);
crm_xml_add_int(update_msg, F_STONITH_RC, result);
if(data != NULL) {
add_message_xml(update_msg, F_STONITH_CALLDATA, data);
}
crm_trace("Notifying clients");
g_hash_table_foreach(client_list, stonith_notify_client, update_msg);
free_xml(update_msg);
crm_trace("Notify complete");
}
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 = NULL;
line = calloc(1, 2 + lpc - last);
snprintf(line, 1 + lpc - last, "%s", devices+last);
output = stonith_key_value_add(output, NULL, line);
free(line);
last = lpc + 1;
}
}
return output;
}
static void topology_remove_helper(const char *node, int level)
{
int rc;
char *desc = NULL;
xmlNode *data = create_xml_node(NULL, F_STONITH_LEVEL);
xmlNode *notify_data = create_xml_node(NULL, STONITH_OP_LEVEL_DEL);
crm_xml_add(data, "origin", __FUNCTION__);
crm_xml_add_int(data, XML_ATTR_ID, level);
crm_xml_add(data, F_STONITH_TARGET, node);
rc = stonith_level_remove(data, &desc);
crm_xml_add(notify_data, F_STONITH_DEVICE, desc);
crm_xml_add_int(notify_data, F_STONITH_ACTIVE, g_hash_table_size(topology));
- do_stonith_notify(0, STONITH_OP_LEVEL_DEL, rc, notify_data, NULL);
+ do_stonith_notify(0, STONITH_OP_LEVEL_DEL, rc, notify_data);
free_xml(notify_data);
free_xml(data);
free(desc);
}
static void topology_register_helper(const char *node, int level, stonith_key_value_t *device_list)
{
int rc;
char *desc = NULL;
xmlNode *notify_data = create_xml_node(NULL, STONITH_OP_LEVEL_ADD);
xmlNode *data = create_level_registration_xml(node, level, device_list);
rc = stonith_level_register(data, &desc);
crm_xml_add(notify_data, F_STONITH_DEVICE, desc);
crm_xml_add_int(notify_data, F_STONITH_ACTIVE, g_hash_table_size(topology));
- do_stonith_notify(0, STONITH_OP_LEVEL_ADD, rc, notify_data, NULL);
+ do_stonith_notify(0, STONITH_OP_LEVEL_ADD, rc, notify_data);
free_xml(notify_data);
free_xml(data);
free(desc);
}
static void remove_fencing_topology(xmlXPathObjectPtr xpathObj)
{
int max = 0, lpc = 0;
if(xpathObj && xpathObj->nodesetval) {
max = xpathObj->nodesetval->nodeNr;
}
for(lpc = 0; lpc < max; lpc++) {
xmlNode *match = getXpathResult(xpathObj, lpc);
CRM_CHECK(match != NULL, continue);
if(crm_element_value(match, XML_DIFF_MARKER)) {
/* Deletion */
int index = 0;
const char *target = crm_element_value(match, XML_ATTR_STONITH_TARGET);
crm_element_value_int(match, XML_ATTR_STONITH_INDEX, &index);
if(target == NULL) {
crm_err("Invalid fencing target in element %s", ID(match));
} else if(index <= 0) {
crm_err("Invalid level for %s in element %s", target, ID(match));
} else {
topology_remove_helper(target, index);
}
/* } else { Deal with modifications during the 'addition' stage */
}
}
}
static void register_fencing_topology(xmlXPathObjectPtr xpathObj, gboolean force)
{
int max = 0, lpc = 0;
if(xpathObj && xpathObj->nodesetval) {
max = xpathObj->nodesetval->nodeNr;
}
for(lpc = 0; lpc < max; lpc++) {
int index = 0;
const char *target;
const char *dev_list;
stonith_key_value_t *devices = NULL;
xmlNode *match = getXpathResult(xpathObj, lpc);
CRM_CHECK(match != NULL, continue);
crm_element_value_int(match, XML_ATTR_STONITH_INDEX, &index);
target = crm_element_value(match, XML_ATTR_STONITH_TARGET);
dev_list = crm_element_value(match, XML_ATTR_STONITH_DEVICES);
devices = parse_device_list(dev_list);
crm_trace("Updating %s[%d] (%s) to %s", target, index, ID(match), dev_list);
if(target == NULL) {
crm_err("Invalid fencing target in element %s", ID(match));
} else if(index <= 0) {
crm_err("Invalid level for %s in element %s", target, ID(match));
} else if(force == FALSE && crm_element_value(match, XML_DIFF_MARKER)) {
/* Addition */
topology_register_helper(target, index, devices);
} else { /* Modification */
/* Remove then re-add */
topology_remove_helper(target, index);
topology_register_helper(target, index, devices);
}
stonith_key_value_freeall(devices, 1, 1);
}
}
/* Fencing
<diff crm_feature_set="3.0.6">
<diff-removed>
<fencing-topology>
<fencing-level id="f-p1.1" target="pcmk-1" index="1" devices="poison-pill" __crm_diff_marker__="removed:top"/>
<fencing-level id="f-p1.2" target="pcmk-1" index="2" devices="power" __crm_diff_marker__="removed:top"/>
<fencing-level devices="disk,network" id="f-p2.1"/>
</fencing-topology>
</diff-removed>
<diff-added>
<fencing-topology>
<fencing-level id="f-p.1" target="pcmk-1" index="1" devices="poison-pill" __crm_diff_marker__="added:top"/>
<fencing-level id="f-p2.1" target="pcmk-2" index="1" devices="disk,something"/>
<fencing-level id="f-p3.1" target="pcmk-2" index="2" devices="power" __crm_diff_marker__="added:top"/>
</fencing-topology>
</diff-added>
</diff>
*/
static void
fencing_topology_callback(xmlNode * msg, int call_id, int rc, xmlNode * output, void *user_data)
{
xmlXPathObjectPtr xpathObj = NULL;
const char *xpath = "//" XML_TAG_FENCING_LEVEL;
crm_trace("Pushing in stonith topology");
/* Grab everything */
xpathObj = xpath_search(msg, xpath);
register_fencing_topology(xpathObj, TRUE);
if(xpathObj) {
xmlXPathFreeObject(xpathObj);
}
}
static void
update_fencing_topology(const char *event, xmlNode * msg)
{
const char *xpath;
xmlXPathObjectPtr xpathObj = NULL;
/* Process deletions (only) */
xpath = "//" F_CIB_UPDATE_RESULT "//" XML_TAG_DIFF_REMOVED "//" XML_TAG_FENCING_LEVEL;
xpathObj = xpath_search(msg, xpath);
remove_fencing_topology(xpathObj);
if(xpathObj) {
xmlXPathFreeObject(xpathObj);
}
/* Process additions and changes */
xpath = "//" F_CIB_UPDATE_RESULT "//" XML_TAG_DIFF_ADDED "//" XML_TAG_FENCING_LEVEL;
xpathObj = xpath_search(msg, xpath);
register_fencing_topology(xpathObj, FALSE);
if(xpathObj) {
xmlXPathFreeObject(xpathObj);
}
}
static void
stonith_shutdown(int nsig)
{
stonith_shutdown_flag = TRUE;
crm_info("Terminating with %d clients", g_hash_table_size(client_list));
if(mainloop != NULL && g_main_is_running(mainloop)) {
g_main_quit(mainloop);
} else {
stonith_cleanup();
exit(EX_OK);
}
}
cib_t *cib = NULL;
static void
stonith_cleanup(void)
{
if(cib) {
cib->cmds->signoff(cib);
}
if(ipcs) {
qb_ipcs_destroy(ipcs);
}
crm_peer_destroy();
g_hash_table_destroy(client_list);
free(stonith_our_uname);
#if HAVE_LIBXML2
crm_xml_cleanup();
#endif
}
/* *INDENT-OFF* */
static struct crm_option long_options[] = {
{"stand-alone", 0, 0, 's'},
{"stand-alone-w-cpg", 0, 0, 'c'},
{"verbose", 0, 0, 'V'},
{"version", 0, 0, '$'},
{"help", 0, 0, '?'},
{0, 0, 0, 0}
};
/* *INDENT-ON* */
static void
setup_cib(void)
{
static void *cib_library = NULL;
static cib_t *(*cib_new_fn)(void) = NULL;
static const char *(*cib_err_fn)(int) = NULL;
int rc, retries = 0;
if(cib_library == NULL) {
cib_library = dlopen(CIB_LIBRARY, RTLD_LAZY);
}
if(cib_library && cib_new_fn == NULL) {
cib_new_fn = dlsym(cib_library, "cib_new");
}
if(cib_library && cib_err_fn == NULL) {
cib_err_fn = dlsym(cib_library, "pcmk_strerror");
}
if(cib_new_fn != NULL) {
cib = (*cib_new_fn)();
}
if(cib == NULL) {
crm_err("No connection to the CIB");
return;
}
do {
sleep(retries);
rc = cib->cmds->signon(cib, CRM_SYSTEM_CRMD, cib_command);
} while(rc == -ENOTCONN && ++retries < 5);
if (rc != pcmk_ok) {
crm_err("Could not connect to the CIB service: %d %p", rc, cib_err_fn);
} else if (pcmk_ok != cib->cmds->add_notify_callback(
cib, T_CIB_DIFF_NOTIFY, update_fencing_topology)) {
crm_err("Could not set CIB notification callback");
} else {
rc = cib->cmds->query(cib, NULL, NULL, cib_scope_local);
add_cib_op_callback(cib, rc, FALSE, NULL, fencing_topology_callback);
crm_notice("Watching for stonith topology changes");
}
}
struct qb_ipcs_service_handlers ipc_callbacks =
{
.connection_accept = st_ipc_accept,
.connection_created = st_ipc_created,
.msg_process = st_ipc_dispatch,
.connection_closed = st_ipc_closed,
.connection_destroyed = st_ipc_destroy
};
static void
st_peer_update_callback(enum crm_status_type type, crm_node_t * node, const void *data)
{
/*
* This is a hack until we can send to a nodeid and/or we fix node name lookups
* These messages are ignored in stonith_peer_callback()
*/
xmlNode *query = create_xml_node(NULL, "stonith_command");
crm_xml_add(query, F_XML_TAGNAME, "stonith_command");
crm_xml_add(query, F_TYPE, T_STONITH_NG);
crm_xml_add(query, F_STONITH_OPERATION, "poke");
crm_debug("Broadcasting our uname because of node %u", node->id);
send_cluster_message(NULL, crm_msg_stonith_ng, query, FALSE);
free_xml(query);
}
int
main(int argc, char ** argv)
{
int flag;
int rc = 0;
int lpc = 0;
int argerr = 0;
int option_index = 0;
crm_cluster_t cluster;
const char *actions[] = { "reboot", "off", "list", "monitor", "status" };
crm_log_init("stonith-ng", LOG_INFO, TRUE, FALSE, argc, argv, FALSE);
crm_set_options(NULL, "mode [options]", long_options,
"Provides a summary of cluster's current state."
"\n\nOutputs varying levels of detail in a number of different formats.\n");
while (1) {
flag = crm_get_option(argc, argv, &option_index);
if (flag == -1) {
break;
}
switch(flag) {
case 'V':
crm_bump_log_level(argc, argv);
break;
case 's':
stand_alone = TRUE;
break;
case 'c':
stand_alone = FALSE;
no_cib_connect = TRUE;
break;
case '$':
case '?':
crm_help(flag, EX_OK);
break;
default:
++argerr;
break;
}
}
if(argc - optind == 1 && safe_str_eq("metadata", argv[optind])) {
printf("<?xml version=\"1.0\"?><!DOCTYPE resource-agent SYSTEM \"ra-api-1.dtd\">\n");
printf("<resource-agent name=\"stonithd\">\n");
printf(" <version>1.0</version>\n");
printf(" <longdesc lang=\"en\">This is a fake resource that details the instance attributes handled by stonithd.</longdesc>\n");
printf(" <shortdesc lang=\"en\">Options available for all stonith resources</shortdesc>\n");
printf(" <parameters>\n");
printf(" <parameter name=\"stonith-timeout\" unique=\"0\">\n");
printf(" <shortdesc lang=\"en\">How long to wait for the STONITH action to complete per a stonith device.</shortdesc>\n");
printf(" <longdesc lang=\"en\">Overrides the stonith-timeout cluster property</longdesc>\n");
printf(" <content type=\"time\" default=\"60s\"/>\n");
printf(" </parameter>\n");
printf(" <parameter name=\"priority\" unique=\"0\">\n");
printf(" <shortdesc lang=\"en\">The priority of the stonith resource. The lower the number, the higher the priority.</shortdesc>\n");
printf(" <content type=\"integer\" default=\"0\"/>\n");
printf(" </parameter>\n");
printf(" <parameter name=\"%s\" unique=\"0\">\n", STONITH_ATTR_HOSTARG);
printf(" <shortdesc lang=\"en\">Advanced use only: An alternate parameter to supply instead of 'port'</shortdesc>\n");
printf(" <longdesc lang=\"en\">Some devices do not support the standard 'port' parameter or may provide additional ones.\n"
"Use this to specify an alternate, device-specific, parameter that should indicate the machine to be fenced.\n"
"A value of 'none' can be used to tell the cluster not to supply any additional parameters.\n"
" </longdesc>\n");
printf(" <content type=\"string\" default=\"port\"/>\n");
printf(" </parameter>\n");
printf(" <parameter name=\"%s\" unique=\"0\">\n", STONITH_ATTR_HOSTMAP);
printf(" <shortdesc lang=\"en\">A mapping of host names to ports numbers for devices that do not support host names.</shortdesc>\n");
printf(" <longdesc lang=\"en\">Eg. node1:1;node2:2,3 would tell the cluster to use port 1 for node1 and ports 2 and 3 for node2</longdesc>\n");
printf(" <content type=\"string\" default=\"\"/>\n");
printf(" </parameter>\n");
printf(" <parameter name=\"%s\" unique=\"0\">\n", STONITH_ATTR_HOSTLIST);
printf(" <shortdesc lang=\"en\">A list of machines controlled by this device (Optional unless %s=static-list).</shortdesc>\n", STONITH_ATTR_HOSTCHECK);
printf(" <content type=\"string\" default=\"\"/>\n");
printf(" </parameter>\n");
printf(" <parameter name=\"%s\" unique=\"0\">\n", STONITH_ATTR_HOSTCHECK);
printf(" <shortdesc lang=\"en\">How to determin which machines are controlled by the device.</shortdesc>\n");
printf(" <longdesc lang=\"en\">Allowed values: dynamic-list (query the device), static-list (check the %s attribute), none (assume every device can fence every machine)</longdesc>\n", STONITH_ATTR_HOSTLIST);
printf(" <content type=\"string\" default=\"dynamic-list\"/>\n");
printf(" </parameter>\n");
for(lpc = 0; lpc < DIMOF(actions); lpc++) {
printf(" <parameter name=\"pcmk_%s_action\" unique=\"0\">\n", actions[lpc]);
printf(" <shortdesc lang=\"en\">Advanced use only: An alternate command to run instead of '%s'</shortdesc>\n", actions[lpc]);
printf(" <longdesc lang=\"en\">Some devices do not support the standard commands or may provide additional ones.\n"
"Use this to specify an alternate, device-specific, command that implements the '%s' action.</longdesc>\n", actions[lpc]);
printf(" <content type=\"string\" default=\"%s\"/>\n", actions[lpc]);
printf(" </parameter>\n");
}
printf(" </parameters>\n");
printf("</resource-agent>\n");
return 0;
}
if (optind != argc) {
++argerr;
}
if (argerr) {
crm_help('?', EX_USAGE);
}
mainloop_add_signal(SIGTERM, stonith_shutdown);
crm_peer_init();
client_list = g_hash_table_new(crm_str_hash, g_str_equal);
if(stand_alone == FALSE) {
#if SUPPORT_HEARTBEAT
cluster.hb_dispatch = stonith_peer_hb_callback;
cluster.destroy = stonith_peer_hb_destroy;
#endif
if(is_openais_cluster()) {
#if SUPPORT_COROSYNC
cluster.destroy = stonith_peer_ais_destroy;
cluster.cs_dispatch = stonith_peer_ais_callback;
#endif
}
if(crm_cluster_connect(&cluster) == FALSE) {
crm_crit("Cannot sign in to the cluster... terminating");
exit(100);
} else {
stonith_our_uname = cluster.uname;
}
stonith_our_uname = cluster.uname;
if (no_cib_connect == FALSE) {
setup_cib();
}
} else {
stonith_our_uname = strdup("localhost");
}
crm_set_status_callback(&st_peer_update_callback);
device_list = g_hash_table_new_full(
crm_str_hash, g_str_equal, NULL, free_device);
topology = g_hash_table_new_full(
crm_str_hash, g_str_equal, NULL, free_topology_entry);
ipcs = mainloop_add_ipc_server("stonith-ng", QB_IPC_NATIVE, &ipc_callbacks);
#if SUPPORT_STONITH_CONFIG
if (((stand_alone == TRUE)) && !(standalone_cfg_read_file(STONITH_NG_CONF_FILE))) {
standalone_cfg_commit();
}
#endif
if(ipcs != NULL) {
/* Create the mainloop and run it... */
mainloop = g_main_new(FALSE);
crm_info("Starting %s mainloop", crm_system_name);
g_main_run(mainloop);
} else {
crm_err("Couldnt start all communication channels, exiting.");
}
stonith_cleanup();
#if SUPPORT_HEARTBEAT
if(cluster.hb_conn) {
cluster.hb_conn->llc_ops->delete(cluster.hb_conn);
}
#endif
crm_info("Done");
qb_log_fini();
return rc;
}
diff --git a/fencing/remote.c b/fencing/remote.c
index 6abca62f84..d727290bcf 100644
--- a/fencing/remote.c
+++ b/fencing/remote.c
@@ -1,1100 +1,1138 @@
/*
* 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/cluster/internal.h>
#include <crm/stonith-ng.h>
#include <crm/fencing/internal.h>
#include <crm/common/xml.h>
#include <crm/common/util.h>
#include <internal.h>
#define TIMEOUT_MULTIPLY_FACTOR 1.2
typedef struct st_query_result_s
{
char *host;
int devices;
GListPtr device_list;
GHashTable *custom_action_timeouts;
} st_query_result_t;
GHashTable *remote_op_list = NULL;
void call_remote_stonith(remote_fencing_op_t *op, st_query_result_t *peer);
static void remote_op_done(remote_fencing_op_t *op, xmlNode *data, int rc, int dup);
extern xmlNode *stonith_create_op(
int call_id, const char *token, const char *op, xmlNode *data, int call_options);
static void report_timeout_period(remote_fencing_op_t *op, int op_timeout);
static int get_op_total_timeout(remote_fencing_op_t *op, st_query_result_t *chosen_peer, int default_timeout);
static void free_remote_query(gpointer data)
{
if(data) {
st_query_result_t *query = data;
crm_trace("Free'ing query result from %s", query->host);
free(query->host);
g_hash_table_destroy(query->custom_action_timeouts);
free(query);
}
}
static void
clear_remote_op_timers(remote_fencing_op_t *op)
{
if(op->query_timer) {
g_source_remove(op->query_timer);
op->query_timer = 0;
}
if(op->op_timer_total) {
g_source_remove(op->op_timer_total);
op->op_timer_total = 0;
}
if(op->op_timer_one) {
g_source_remove(op->op_timer_one);
op->op_timer_one = 0;
}
}
static void free_remote_op(gpointer data)
{
remote_fencing_op_t *op = data;
crm_trace("Free'ing op %s for %s", op->id, op->target);
crm_log_xml_debug(op->request, "Destroying");
clear_remote_op_timers(op);
free(op->id);
free(op->action);
free(op->target);
free(op->client_id);
free(op->client_name);
free(op->originator);
if(op->query_results) {
g_list_free_full(op->query_results, free_remote_query);
}
if(op->request) {
free_xml(op->request);
op->request = NULL;
}
free(op);
}
static xmlNode *
create_op_done_notify(remote_fencing_op_t *op, int rc)
{
xmlNode *notify_data = create_xml_node(NULL, T_STONITH_NOTIFY_FENCE);
crm_xml_add_int(notify_data, "state", op->state);
crm_xml_add_int(notify_data, F_STONITH_RC, rc);
crm_xml_add(notify_data, F_STONITH_TARGET, op->target);
crm_xml_add(notify_data, F_STONITH_ACTION, op->action);
crm_xml_add(notify_data, F_STONITH_DELEGATE, op->delegate);
- crm_xml_add(notify_data, F_STONITH_REMOTE, op->id);
+ crm_xml_add(notify_data, F_STONITH_REMOTE_OP_ID, op->id);
crm_xml_add(notify_data, F_STONITH_ORIGIN, op->originator);
crm_xml_add(notify_data, F_STONITH_CLIENTID, op->client_id);
crm_xml_add(notify_data, F_STONITH_CLIENTNAME,op->client_name);
return notify_data;
}
static void
bcast_result_to_peers(remote_fencing_op_t *op, int rc)
{
static int count = 0;
xmlNode *bcast = create_xml_node(NULL, T_STONITH_REPLY);
xmlNode *notify_data = create_op_done_notify(op, rc);
count++;
crm_trace("Broadcasting result to peers");
crm_xml_add(bcast, F_TYPE, T_STONITH_NOTIFY);
crm_xml_add(bcast, F_SUBTYPE, "broadcast");
crm_xml_add(bcast, F_STONITH_OPERATION, T_STONITH_NOTIFY);
crm_xml_add_int(bcast, "count", count);
add_message_xml(bcast, F_STONITH_CALLDATA, notify_data);
send_cluster_message(NULL, crm_msg_stonith_ng, bcast, FALSE);
free_xml(notify_data);
free_xml(bcast);
return;
}
static void
handle_local_reply_and_notify(remote_fencing_op_t *op, xmlNode *data, int rc)
{
xmlNode *notify_data = NULL;
xmlNode *reply = NULL;
if (op->notify_sent == TRUE) {
/* nothing to do */
return;
}
/* Do notification with a clean data object */
notify_data = create_op_done_notify(op, rc);
crm_xml_add_int(data, "state", op->state);
crm_xml_add(data, F_STONITH_TARGET, op->target);
crm_xml_add(data, F_STONITH_OPERATION, op->action);
reply = stonith_construct_reply(op->request, NULL, data, rc);
crm_xml_add(reply, F_STONITH_DELEGATE, op->delegate);
/* Send fencing OP reply to local client that initiated fencing */
do_local_reply(reply, op->client_id, op->call_options & st_opt_sync_call, FALSE);
/* bcast to all local clients that the fencing operation happend */
- do_stonith_notify(0, T_STONITH_NOTIFY_FENCE, rc, notify_data, NULL);
+ do_stonith_notify(0, T_STONITH_NOTIFY_FENCE, rc, notify_data);
/* mark this op as having notify's already sent */
op->notify_sent = TRUE;
free_xml(reply);
free_xml(notify_data);
}
static void
handle_duplicates(remote_fencing_op_t *op, xmlNode *data, int rc)
{
GListPtr iter = NULL;
for(iter = op->duplicates; iter != NULL; iter = iter->next) {
remote_fencing_op_t *other = iter->data;
if(other->state == st_duplicate) {
/* Ie. it hasn't timed out already */
other->state = op->state;
crm_debug("Peforming duplicate notification for %s@%s.%.8s = %s", other->client_name, other->originator, other->id, pcmk_strerror(rc));
remote_op_done(other, data, rc, TRUE);
} else {
crm_err("Skipping duplicate notification for %s@%s - %d", other->client_name, other->originator, other->state);
}
}
}
+/*!
+ * \internal
+ * \brief Finalize a remote operation.
+ *
+ * \description This function has two code paths.
+ *
+ * Path 1. This node is the owner of the operation and needs
+ * to notify the cpg group via a broadcast as to the operation's
+ * results.
+ *
+ * Path 2. The cpg broadcast is received. All nodes notify their local
+ * stonith clients the operation results.
+ *
+ * So, The owner of the operation first notifies the cluster of the result,
+ * and once that cpg notify is received back it notifies all the local clients.
+ *
+ * Nodes that are passive watchers of the operation will receive the
+ * broadcast and only need to notify their local clients the operation finished.
+ *
+ * \param op, The fencing operation to finalize
+ * \param data, The xml msg reply (if present) of the last delegated fencing
+ * operation.
+ * \param dup, Is this operation a duplicate, if so treat it a little differently
+ * making sure the broadcast is not sent out.
+ */
static void
remote_op_done(remote_fencing_op_t *op, xmlNode *data, int rc, int dup)
{
int level = LOG_ERR;
const char *subt = NULL;
xmlNode *local_data = NULL;
op->completed = time(NULL);
clear_remote_op_timers(op);
if(op->notify_sent == TRUE) {
crm_err("Already sent notifications for '%s of %s by %s' (for=%s@%s.%.8s, state=%d): %s",
op->action, op->target, op->delegate?op->delegate:"<no-one>",
op->client_name, op->originator, op->id, op->state, pcmk_strerror(rc));
goto remote_op_done_cleanup;
}
+ if(!op->delegate && data) {
+ op->delegate = crm_element_value_copy(data, F_ORIG);
+ }
+
if(data == NULL) {
data = create_xml_node(NULL, "remote-op");
local_data = data;
-
- } else if(op->delegate == NULL) {
- op->delegate = crm_element_value_copy(data, F_ORIG);
}
/* Tell everyone the operation is done, we will continue
* with doing the local notifications once we receive
* the broadcast back. */
subt = crm_element_value(data, F_SUBTYPE);
if(dup == FALSE && safe_str_neq(subt, "broadcast")) {
/* Defer notification until the bcast message arrives */
bcast_result_to_peers(op, rc);
goto remote_op_done_cleanup;
}
if(rc == pcmk_ok || dup) {
level = LOG_NOTICE;
} else if(safe_str_neq(op->originator, stonith_our_uname)) {
level = LOG_NOTICE;
}
do_crm_log(level,
"Operation %s of %s by %s for %s@%s.%.8s: %s",
op->action, op->target, op->delegate?op->delegate:"<no-one>",
op->client_name, op->originator, op->id, pcmk_strerror(rc));
handle_local_reply_and_notify(op, data, rc);
if (dup == FALSE) {
handle_duplicates(op, data, rc);
}
/* Free non-essential parts of the record
* Keep the record around so we can query the history
*/
if(op->query_results) {
g_list_free_full(op->query_results, free_remote_query);
op->query_results = NULL;
}
if(op->request) {
free_xml(op->request);
op->request = NULL;
}
remote_op_done_cleanup:
free_xml(local_data);
}
static gboolean remote_op_timeout_one(gpointer userdata)
{
remote_fencing_op_t *op = userdata;
op->op_timer_one = 0;
crm_notice("Remote %s operation on %s for %s.%8s timed out",
op->action, op->target, op->client_name, op->id);
call_remote_stonith(op, NULL);
return FALSE;
}
static gboolean remote_op_timeout(gpointer userdata)
{
remote_fencing_op_t *op = userdata;
op->op_timer_total = 0;
if(op->state == st_done) {
crm_debug("Action %s (%s) for %s (%s) already completed",
op->action, op->id, op->target, op->client_name);
return FALSE;
}
crm_debug("Action %s (%s) for %s (%s) timed out",
op->action, op->id, op->target, op->client_name);
op->state = st_failed;
remote_op_done(op, NULL, -ETIME, FALSE);
return FALSE;
}
static gboolean remote_op_query_timeout(gpointer data)
{
remote_fencing_op_t *op = data;
op->query_timer = 0;
if(op->state == st_done) {
crm_debug("Operation %s for %s already completed", op->id, op->target);
} else if(op->state == st_exec) {
crm_debug("Operation %s for %s already in progress", op->id, op->target);
} else if(op->query_results) {
crm_debug("Query %s for %s complete: %d", op->id, op->target, op->state);
call_remote_stonith(op, NULL);
} else {
crm_debug("Query %s for %s timed out: %d", op->id, op->target, op->state);
if(op->op_timer_total) {
g_source_remove(op->op_timer_total);
op->op_timer_total = 0;
}
remote_op_timeout(op);
}
return FALSE;
}
static int stonith_topology_next(remote_fencing_op_t *op)
{
stonith_topology_t *tp = NULL;
if(op->target) {
/* Queries don't have a target set */
tp = g_hash_table_lookup(topology, op->target);
}
if(tp == NULL) {
return pcmk_ok;
}
set_bit(op->call_options, st_opt_topology);
do {
op->level++;
} while(op->level < ST_LEVEL_MAX && tp->levels[op->level] == NULL);
if(op->level < ST_LEVEL_MAX) {
crm_trace("Attempting fencing level %d for %s (%d devices) - %s@%s.%.8s",
op->level, op->target, g_list_length(tp->levels[op->level]),
op->client_name, op->originator, op->id);
op->devices = tp->levels[op->level];
return pcmk_ok;
}
crm_notice("All fencing options to fence %s for %s@%s.%.8s failed",
op->target, op->client_name, op->originator, op->id);
return -EINVAL;
}
/*!
* \brief Check to see if this operation is a duplicate of another in flight
* operation. If so merge this operation into the inflight operation, and mark
* it as a duplicate.
*/
static void
merge_duplicates(remote_fencing_op_t *op)
{
GHashTableIter iter;
remote_fencing_op_t *other = NULL;
g_hash_table_iter_init(&iter, remote_op_list);
while(g_hash_table_iter_next(&iter, NULL, (void**)&other)) {
if(other->state > st_exec) {
/* Must be in-progress */
continue;
} else if (safe_str_neq(op->target, other->target)) {
/* Must be for the same node */
continue;
} else if(safe_str_neq(op->action, other->action)) {
crm_trace("Must be for the same action: %s vs. ", op->action, other->action);
continue;
} else if(safe_str_eq(op->client_name, other->client_name)) {
crm_trace("Must be for different clients: %s", op->client_name);
continue;
} else if(safe_str_eq(other->target, other->originator)) {
crm_trace("Can't be a suicide operation: %s", other->target);
continue;
}
/* There is another in-flight request to fence the same host
* Piggyback on that instead. If it fails, so do we.
*/
other->duplicates = g_list_append(other->duplicates, op);
if(other->total_timeout == 0) {
crm_trace("Making a best-guess as to the timeout used");
other->total_timeout = op->total_timeout = TIMEOUT_MULTIPLY_FACTOR * get_op_total_timeout(op, NULL, op->base_timeout);
}
crm_notice("Merging stonith action %s for node %s originating from client %s.%.8s with identical request from %s@%s.%.8s (%ds)",
op->action, op->target, op->client_name, op->id, other->client_name, other->originator, other->id, other->total_timeout);
report_timeout_period(op, other->total_timeout);
op->state = st_duplicate;
}
}
+/*!
+ * \internal
+ * \brief Create a new remote stonith op
+ * \param client, he local stonith client id that initaited the operation
+ * \param request, The request from the client that started the operation
+ * \param peer, Is this operation owned by another stonith peer? Operations
+ * owned by other peers are stored on all the stonith nodes, but only the
+ * owner executes the operation. All the nodes get the results to the operation
+ * once the owner finishes executing it.
+ */
void *create_remote_stonith_op(const char *client, xmlNode *request, gboolean peer)
{
remote_fencing_op_t *op = NULL;
xmlNode *dev = get_xpath_object("//@"F_STONITH_TARGET, request, LOG_TRACE);
if(remote_op_list == NULL) {
remote_op_list = g_hash_table_new_full(
crm_str_hash, g_str_equal, NULL, free_remote_op);
}
+ /* If this operation is owned by another node, check to make
+ * sure we haven't already created this operation. */
if(peer && dev) {
- const char *peer_id = crm_element_value(dev, F_STONITH_REMOTE);
- CRM_CHECK(peer_id != NULL, return NULL);
+ const char *op_id = crm_element_value(dev, F_STONITH_REMOTE_OP_ID);
+ CRM_CHECK(op_id != NULL, return NULL);
- op = g_hash_table_lookup(remote_op_list, peer_id);
+ op = g_hash_table_lookup(remote_op_list, op_id);
if(op) {
- crm_debug("%s already exists", peer_id);
+ crm_debug("%s already exists", op_id);
return op;
}
}
op = calloc(1, sizeof(remote_fencing_op_t));
crm_element_value_int(request, F_STONITH_TIMEOUT, (int*)&(op->base_timeout));
if(peer && dev) {
- op->id = crm_element_value_copy(dev, F_STONITH_REMOTE);
+ op->id = crm_element_value_copy(dev, F_STONITH_REMOTE_OP_ID);
} else {
op->id = crm_generate_uuid();
}
g_hash_table_replace(remote_op_list, op->id, op);
CRM_LOG_ASSERT(g_hash_table_lookup(remote_op_list, op->id) != NULL);
op->state = st_query;
op->action = crm_element_value_copy(dev, F_STONITH_ACTION);
op->originator = crm_element_value_copy(dev, F_STONITH_ORIGIN);
if(op->originator == NULL) {
- /* Local request */
+ /* Local or relayed request */
op->originator = strdup(stonith_our_uname);
}
if(client) {
op->client_id = strdup(client);
}
op->client_name = crm_element_value_copy(request, F_STONITH_CLIENTNAME);
op->target = crm_element_value_copy(dev, F_STONITH_TARGET);
op->request = copy_xml(request); /* TODO: Figure out how to avoid this */
crm_element_value_int(request, F_STONITH_CALLOPTS, (int*)&(op->call_options));
crm_trace("%s new stonith op: %s - %s of %s for %s",
(peer && dev)?"Recorded":"Generated", op->id, op->action, op->target, op->client_name);
if(op->call_options & st_opt_cs_nodeid) {
int nodeid = crm_atoi(op->target, NULL);
crm_node_t *node = crm_get_peer(nodeid, NULL);
/* Ensure the conversion only happens once */
op->call_options &= ~st_opt_cs_nodeid;
if(node && node->uname) {
free(op->target);
op->target = strdup(node->uname);
} else {
crm_warn("Could not expand nodeid '%s' into a host name (%p)", op->target, node);
}
}
- /* check to see if this is a duplicate operation of another in-flight operation */
- merge_duplicates(op);
+ /* check to see if this is a duplicate operation of another in-flight operation */
+ merge_duplicates(op);
return op;
}
remote_fencing_op_t *initiate_remote_stonith_op(stonith_client_t *client, xmlNode *request, gboolean manual_ack)
{
xmlNode *query = NULL;
const char *client_id = NULL;
remote_fencing_op_t *op = NULL;
if(client) {
client_id = client->id;
} else {
client_id = crm_element_value(request, F_STONITH_CLIENTID);
}
CRM_LOG_ASSERT(client_id != NULL);
op = create_remote_stonith_op(client_id, request, FALSE);
op->owner = TRUE;
CRM_CHECK(op->action, return NULL);
if(stonith_topology_next(op) != pcmk_ok) {
op->state = st_failed;
}
switch(op->state) {
case st_failed:
crm_warn("Initiation of remote operation %s for %s: failed (%s)", op->action, op->target, op->id);
return op;
case st_duplicate:
crm_info("Initiating remote operation %s for %s: %s (duplicate)", op->action, op->target, op->id);
return op;
default:
crm_notice("Initiating remote operation %s for %s: %s (%d)", op->action, op->target, op->id, op->state);
}
query = stonith_create_op(0, op->id, STONITH_OP_QUERY, NULL, 0);
if(!manual_ack) {
op->query_timer = g_timeout_add(100*op->base_timeout, remote_op_query_timeout, op);
} else {
crm_xml_add(query, F_STONITH_DEVICE, "manual_ack");
}
- crm_xml_add(query, F_STONITH_REMOTE, op->id);
+ crm_xml_add(query, F_STONITH_REMOTE_OP_ID, op->id);
crm_xml_add(query, F_STONITH_TARGET, op->target);
crm_xml_add(query, F_STONITH_ACTION, op->action);
crm_xml_add(query, F_STONITH_ORIGIN, op->originator);
crm_xml_add(query, F_STONITH_CLIENTID, op->client_id);
crm_xml_add(query, F_STONITH_CLIENTNAME, op->client_name);
crm_xml_add_int(query, F_STONITH_TIMEOUT, op->base_timeout);
send_cluster_message(NULL, crm_msg_stonith_ng, query, FALSE);
free_xml(query);
return op;
}
static gint sort_strings(gconstpointer a, gconstpointer b)
{
return strcmp(a, b);
}
static st_query_result_t *stonith_choose_peer(remote_fencing_op_t *op)
{
GListPtr iter = NULL;
do {
if(op->devices) {
crm_trace("Checking for someone to fence %s with %s", op->target, (char*)op->devices->data);
} else {
crm_trace("Checking for someone to fence %s", op->target);
}
for(iter = op->query_results; iter != NULL; iter = iter->next) {
st_query_result_t *peer = iter->data;
if(is_set(op->call_options, st_opt_topology)) {
/* Do they have the next device of the current fencing level? */
GListPtr match = NULL;
if(op->devices) {
match = g_list_find_custom(peer->device_list, op->devices->data, sort_strings);
}
if(match) {
crm_trace("Removing %s from %s (%d remaining)", (char*)match->data, peer->host, g_list_length(peer->device_list));
peer->device_list = g_list_remove(peer->device_list, match->data);
return peer;
}
} else if(peer && peer->devices > 0) {
/* No topology: Use the current best peer */
crm_trace("Simple fencing");
return peer;
}
}
/* Try the next fencing level if there is one */
} while(is_set(op->call_options, st_opt_topology)
&& stonith_topology_next(op) == pcmk_ok);
if(op->devices) {
crm_trace("Couldn't find anyone to fence %s with %s", op->target, (char*)op->devices->data);
} else {
crm_trace("Couldn't find anyone to fence %s", op->target);
}
return NULL;
}
static int
get_device_timeout(st_query_result_t *peer, const char *device, int default_timeout)
{
gpointer res;
if (!peer || !device) {
return default_timeout;
}
res = g_hash_table_lookup(peer->custom_action_timeouts, device);
return res ? GPOINTER_TO_INT(res) : default_timeout;
}
static int
get_op_total_timeout(remote_fencing_op_t *op, st_query_result_t *chosen_peer, int default_timeout)
{
stonith_topology_t *tp = g_hash_table_lookup(topology, op->target);
int total_timeout = 0;
if (is_set(op->call_options, st_opt_topology) && tp) {
int i;
GListPtr device_list = NULL;
GListPtr iter = NULL;
/* Yep, this looks scary, nested loops all over the place.
* Here is what is going on.
* Loop1: Iterate through fencing levels.
* Loop2: If a fencing level has devices, loop through each device
* Loop3: For each device in a fencing level, see what peer owns it
* and what that peer has reported the timeout is for the device.
*/
for (i = 0; i < ST_LEVEL_MAX; i++) {
if (!tp->levels[i]) {
continue;
}
for (device_list = tp->levels[i]; device_list; device_list = device_list->next) {
for(iter = op->query_results; iter != NULL; iter = iter->next) {
st_query_result_t *peer = iter->data;
if (g_list_find_custom(peer->device_list, device_list->data, sort_strings)) {
total_timeout += get_device_timeout(peer, device_list->data, default_timeout);
break;
}
} /* End Loop3: match device with peer that owns device, find device's timeout period */
} /* End Loop2: iterate through devices at a specific level */
} /*End Loop1: iterate through fencing levels */
} else if (chosen_peer) {
GListPtr cur = NULL;
for (cur = chosen_peer->device_list; cur; cur = cur->next) {
total_timeout += get_device_timeout(chosen_peer, cur->data, default_timeout);
}
} else {
total_timeout = default_timeout;
}
return total_timeout ? total_timeout : default_timeout;
}
static void
report_timeout_period(remote_fencing_op_t *op, int op_timeout)
{
GListPtr iter = NULL;
xmlNode *update = NULL;
const char *client_node = NULL;
const char *client_id = NULL;
const char *call_id = NULL;
if (op->call_options & st_opt_sync_call) {
/* There is no reason to report the timeout for a syncronous call. It
* is impossible to use the reported timeout to do anything when the client
* is blocking for the response. This update is only important for
* async calls that require a callback to report the results in. */
return;
} else if (!op->request) {
return;
}
crm_trace("Reporting timeout for %s.%.8s", op->client_name, op->id);
client_node = crm_element_value(op->request, F_STONITH_CLIENTNODE);
call_id = crm_element_value(op->request, F_STONITH_CALLID);
client_id = crm_element_value(op->request, F_STONITH_CLIENTID);
if (!client_node || !call_id || !client_id) {
return;
}
if (safe_str_eq(client_node, stonith_our_uname)) {
/* The client is connected to this node, send the update direclty to them */
do_stonith_async_timeout_update(client_id, call_id, op_timeout);
return;
}
/* The client is connected to another node, relay this update to them */
update = stonith_create_op(0, op->id, STONITH_OP_TIMEOUT_UPDATE, NULL, 0);
- crm_xml_add(update, F_STONITH_REMOTE, op->id);
+ crm_xml_add(update, F_STONITH_REMOTE_OP_ID, op->id);
crm_xml_add(update, F_STONITH_CLIENTID, client_id);
crm_xml_add(update, F_STONITH_CALLID, call_id);
crm_xml_add_int(update, F_STONITH_TIMEOUT, op_timeout);
send_cluster_message(crm_get_peer(0, client_node), crm_msg_stonith_ng, update, FALSE);
free_xml(update);
for(iter = op->duplicates; iter != NULL; iter = iter->next) {
remote_fencing_op_t *dup = iter->data;
crm_trace("Reporting timeout for duplicate %s.%.8s", dup->client_name, dup->id);
report_timeout_period(iter->data, op_timeout);
}
}
void call_remote_stonith(remote_fencing_op_t *op, st_query_result_t *peer)
{
const char *device = NULL;
int timeout = op->base_timeout;
if(peer == NULL && !is_set(op->call_options, st_opt_topology)) {
peer = stonith_choose_peer(op);
}
if(!op->op_timer_total) {
int t = get_op_total_timeout(op, peer, op->base_timeout);
op->total_timeout = TIMEOUT_MULTIPLY_FACTOR * t;
op->op_timer_total = g_timeout_add(1000 * op->total_timeout, remote_op_timeout, op);
report_timeout_period(op, op->total_timeout);
crm_info("Total remote op timeout set to %d for fencing of node %s for %s.%.8s",
t, op->target, op->client_name, op->id);
}
if(is_set(op->call_options, st_opt_topology) && op->devices) {
/* Ignore any preference, they might not have the device we need */
/* When using topology, the stonith_choose_peer function pops off
* the peer from the op's query results. Make sure to calculate
* the op_timeout before calling this function when topology is in use */
peer = stonith_choose_peer(op);
device = op->devices->data;
timeout = get_device_timeout(peer, device, op->base_timeout);
}
if(peer) {
int t = TIMEOUT_MULTIPLY_FACTOR * get_device_timeout(peer, device, op->base_timeout);
xmlNode *query = stonith_create_op(0, op->id, STONITH_OP_FENCE, NULL, 0);
- crm_xml_add(query, F_STONITH_REMOTE, op->id);
+ crm_xml_add(query, F_STONITH_REMOTE_OP_ID, op->id);
crm_xml_add(query, F_STONITH_TARGET, op->target);
crm_xml_add(query, F_STONITH_ACTION, op->action);
crm_xml_add(query, F_STONITH_ORIGIN, op->originator);
crm_xml_add(query, F_STONITH_CLIENTID, op->client_id);
crm_xml_add(query, F_STONITH_CLIENTNAME, op->client_name);
crm_xml_add_int(query, F_STONITH_TIMEOUT, timeout);
if(device) {
crm_info("Requesting that %s perform op %s %s with %s for %s (%ds)",
peer->host, op->action, op->target, device, op->client_name, t);
crm_xml_add(query, F_STONITH_DEVICE, device);
crm_xml_add(query, F_STONITH_MODE, "slave");
} else {
crm_info("Requesting that %s perform op %s %s for %s (%ds)",
peer->host, op->action, op->target, op->client_name, t);
crm_xml_add(query, F_STONITH_MODE, "smart");
}
op->state = st_exec;
if(op->op_timer_one) {
g_source_remove(op->op_timer_one);
}
op->op_timer_one = g_timeout_add((1000 * t), remote_op_timeout_one, op);
send_cluster_message(crm_get_peer(0, peer->host), crm_msg_stonith_ng, query, FALSE);
free_xml(query);
return;
} else if(!op->owner) {
crm_err("The termination of %s for %s is not ours to control", op->target, op->client_name);
} else if(!op->query_timer) {
CRM_LOG_ASSERT(op->state < st_done);
/* We've exhausted all available peers */
crm_info("No remaining peers capable of terminating %s for %s", op->target, op->client_name, op->state);
remote_op_timeout(op);
} else if(device) {
crm_info("Waiting for additional peers capable of terminating %s with %s for %s.%.8s",
op->target, device, op->client_name, op->id);
} else {
crm_info("Waiting for additional peers capable of terminating %s for %s%.8s",
op->target, op->client_name, op->id);
}
free_remote_query(peer);
}
static gint sort_peers(gconstpointer a, gconstpointer b)
{
const st_query_result_t *peer_a = a;
const st_query_result_t *peer_b = a;
if(peer_a->devices > peer_b->devices) {
return -1;
} else if(peer_a->devices > peer_b->devices) {
return 1;
}
return 0;
}
static gboolean
all_topology_devices_found(remote_fencing_op_t *op)
{
GListPtr device = NULL;
GListPtr iter = NULL;
GListPtr match = NULL;
stonith_topology_t *tp = NULL;
int i;
tp = g_hash_table_lookup(topology, op->target);
if (!tp) {
return FALSE;
}
for (i = 0; i < ST_LEVEL_MAX; i++) {
for (device = tp->levels[i]; device; device = device->next) {
match = FALSE;
for(iter = op->query_results; iter != NULL; iter = iter->next) {
st_query_result_t *peer = iter->data;
match = g_list_find_custom(peer->device_list, device->data, sort_strings);
}
if (!match) {
return FALSE;
}
}
}
return TRUE;
}
int process_remote_stonith_query(xmlNode *msg)
{
int devices = 0;
const char *id = NULL;
const char *host = NULL;
remote_fencing_op_t *op = NULL;
st_query_result_t *result = NULL;
- xmlNode *dev = get_xpath_object("//@"F_STONITH_REMOTE, msg, LOG_ERR);
+ xmlNode *dev = get_xpath_object("//@"F_STONITH_REMOTE_OP_ID, msg, LOG_ERR);
xmlNode *child = NULL;
CRM_CHECK(dev != NULL, return -EPROTO);
- id = crm_element_value(dev, F_STONITH_REMOTE);
+ id = crm_element_value(dev, F_STONITH_REMOTE_OP_ID);
CRM_CHECK(id != NULL, return -EPROTO);
dev = get_xpath_object("//@st-available-devices", msg, LOG_ERR);
CRM_CHECK(dev != NULL, return -EPROTO);
crm_element_value_int(dev, "st-available-devices", &devices);
op = g_hash_table_lookup(remote_op_list, id);
if(op == NULL) {
crm_debug("Unknown or expired remote op: %s", id);
return -EOPNOTSUPP;
}
op->replies++;
host = crm_element_value(msg, F_ORIG);
if(devices <= 0) {
/* If we're doing 'known' then we might need to fire anyway */
crm_trace("Query result from %s (%d devices)", host, devices);
return pcmk_ok;
} else if(op->call_options & st_opt_allow_suicide) {
crm_trace("Allowing %s to potentialy fence itself", op->target);
} else if(safe_str_eq(host, op->target)) {
crm_info("Ignoring reply from %s, hosts are not permitted to commit suicide", op->target);
return pcmk_ok;
}
crm_debug("Query result from %s (%d devices)", host, devices);
result = calloc(1, sizeof(st_query_result_t));
result->host = strdup(host);
result->devices = devices;
result->custom_action_timeouts = g_hash_table_new_full(
crm_str_hash, g_str_equal, free, NULL);
for (child = __xml_first_child(dev); child != NULL; child = __xml_next(child)) {
const char *device = ID(child);
int action_timeout = 0;
if(device) {
result->device_list = g_list_prepend(result->device_list, strdup(device));
crm_element_value_int(child, F_STONITH_ACTION_TIMEOUT, &action_timeout);
if (action_timeout) {
crm_trace("Peer %s with device %s returned action timeout %d",
result->host, device, action_timeout);
g_hash_table_insert(result->custom_action_timeouts,
strdup(device),
GINT_TO_POINTER(action_timeout));
}
}
}
CRM_CHECK(devices == g_list_length(result->device_list),
crm_err("Mis-match: Query claimed to have %d devices but %d found", devices, g_list_length(result->device_list)));
op->query_results = g_list_insert_sorted(op->query_results, result, sort_peers);
/* All the query results are in for the topology, start the fencing ops. */
if(is_set(op->call_options, st_opt_topology)) {
/* If we start the fencing before all the topology results are in,
* it is possible fencing levels will be skipped because of the missing
* query results. */
if (op->state == st_query && all_topology_devices_found(op)) {
call_remote_stonith(op, result);
}
/* We have a result for a non-topology fencing op, start fencing */
} else if(op->state == st_query) {
call_remote_stonith(op, result);
} else if(op->state == st_done) {
crm_info("Discarding query result from %s (%d devices): Operation is in state %d",
result->host, result->devices, op->state);
}
return pcmk_ok;
}
int process_remote_stonith_exec(xmlNode *msg)
{
int rc = 0;
const char *id = NULL;
const char *device = NULL;
remote_fencing_op_t *op = NULL;
- xmlNode *dev = get_xpath_object("//@"F_STONITH_REMOTE, msg, LOG_ERR);
+ xmlNode *dev = get_xpath_object("//@"F_STONITH_REMOTE_OP_ID, msg, LOG_ERR);
CRM_CHECK(dev != NULL, return -EPROTO);
- id = crm_element_value(dev, F_STONITH_REMOTE);
+ id = crm_element_value(dev, F_STONITH_REMOTE_OP_ID);
CRM_CHECK(id != NULL, return -EPROTO);
dev = get_xpath_object("//@"F_STONITH_RC, msg, LOG_ERR);
CRM_CHECK(dev != NULL, return -EPROTO);
crm_element_value_int(dev, F_STONITH_RC, &rc);
device = crm_element_value(dev, F_STONITH_DEVICE);
if(remote_op_list) {
op = g_hash_table_lookup(remote_op_list, id);
}
if(op == NULL && rc == pcmk_ok) {
/* Record successful fencing operations */
const char *client_id = crm_element_value(msg, F_STONITH_CLIENTID);
op = create_remote_stonith_op(client_id, msg, TRUE);
}
if(op == NULL) {
/* Could be for an event that began before we started */
/* TODO: Record the op for later querying */
crm_info("Unknown or expired remote op: %s", id);
return -EOPNOTSUPP;
}
if (op->devices && device && safe_str_neq(op->devices->data, device)) {
crm_err("Received outdated reply for device %s to %s node %s. Operation already timed out at remote level.",
device, op->action, op->target);
return rc;
}
if(safe_str_eq(crm_element_value(msg, F_SUBTYPE), "broadcast")) {
crm_debug("Marking call to %s for %s on behalf of %s@%s.%.8s: %s (%d)",
op->action, op->target, op->client_name, op->id, op->originator,
rc == pcmk_ok?"passed":"failed", rc);
if(rc == pcmk_ok) {
op->state = st_done;
} else {
op->state = st_failed;
}
remote_op_done(op, msg, rc, FALSE);
return pcmk_ok;
}
if(is_set(op->call_options, st_opt_topology)) {
const char *device = crm_element_value(msg, F_STONITH_DEVICE);
crm_notice("Call to %s for %s on behalf of %s@%s: %s (%d)",
device, op->target, op->client_name, op->originator,
rc == pcmk_ok?"passed":"failed", rc);
if(safe_str_eq(op->originator, stonith_our_uname)) {
if(op->state == st_done) {
remote_op_done(op, msg, rc, FALSE);
return rc;
} else if(rc == pcmk_ok && op->devices) {
/* Success, are there any more? */
op->devices = op->devices->next;
}
if(op->devices == NULL) {
crm_trace("Marking complex fencing op for %s as complete", op->target);
if(rc == pcmk_ok) {
op->state = st_done;
} else {
op->state = st_failed;
}
remote_op_done(op, msg, rc, FALSE);
return rc;
}
} else {
op->state = st_done;
remote_op_done(op, msg, rc, FALSE);
return rc;
}
} else if(rc == pcmk_ok && op->devices == NULL) {
crm_trace("All done for %s", op->target);
op->state = st_done;
remote_op_done(op, msg, rc, FALSE);
return rc;
}
/* Retry on failure or execute the rest of the topology */
crm_trace("Next for %s on behalf of %s@%s (rc was %d)", op->target, op->originator, op->client_name, rc);
call_remote_stonith(op, NULL);
return rc;
}
int stonith_fence_history(xmlNode *msg, xmlNode **output)
{
int rc = 0;
const char *target = NULL;
xmlNode *dev = get_xpath_object("//@"F_STONITH_TARGET, msg, LOG_TRACE);
if(dev) {
int options = 0;
target = crm_element_value(dev, F_STONITH_TARGET);
crm_element_value_int(msg, F_STONITH_CALLOPTS, &options);
if(target && (options & st_opt_cs_nodeid)) {
int nodeid = crm_atoi(target, NULL);
crm_node_t *node = crm_get_peer(nodeid, NULL);
if(node) {
target = node->uname;
}
}
}
*output = create_xml_node(NULL, F_STONITH_HISTORY_LIST);
if (remote_op_list) {
GHashTableIter iter;
remote_fencing_op_t *op = NULL;
g_hash_table_iter_init(&iter, remote_op_list);
while(g_hash_table_iter_next(&iter, NULL, (void**)&op)) {
xmlNode *entry = NULL;
if (target && strcmp(op->target, target) != 0) {
continue;
}
rc = 0;
entry = create_xml_node(*output, STONITH_OP_EXEC);
crm_xml_add(entry, F_STONITH_TARGET, op->target);
crm_xml_add(entry, F_STONITH_ACTION, op->action);
crm_xml_add(entry, F_STONITH_ORIGIN, op->originator);
crm_xml_add(entry, F_STONITH_DELEGATE, op->delegate);
crm_xml_add_int(entry, F_STONITH_DATE, op->completed);
crm_xml_add_int(entry, F_STONITH_STATE, op->state);
}
}
return rc;
}
gboolean
stonith_check_fence_tolerance(int tolerance,
const char *target,
const char *action)
{
GHashTableIter iter;
time_t now = time(NULL);
remote_fencing_op_t *rop = NULL;
crm_trace("tolerance=%d, remote_op_list=%p", tolerance, remote_op_list);
if (tolerance <= 0 || !remote_op_list || target == NULL || action == NULL) {
return FALSE;
}
g_hash_table_iter_init(&iter, remote_op_list);
while(g_hash_table_iter_next(&iter, NULL, (void**)&rop)) {
if(strcmp(rop->target, target) != 0) {
continue;
} else if(rop->state != st_done) {
continue;
} else if(strcmp(rop->action, action) != 0) {
continue;
} else if((rop->completed + tolerance) < now) {
continue;
}
crm_notice("Target %s was fenced (%s) less than %ds ago by %s on behalf of %s",
target, action, tolerance, rop->delegate, rop->originator);
return TRUE;
}
return FALSE;
}
diff --git a/include/crm/fencing/internal.h b/include/crm/fencing/internal.h
index cb8abff031..09e6ca6fe8 100644
--- a/include/crm/fencing/internal.h
+++ b/include/crm/fencing/internal.h
@@ -1,122 +1,122 @@
/*
* Copyright (C) 2011 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
*/
#ifndef STONITH_NG_INTERNAL__H
# define STONITH_NG_INTERNAL__H
# include <crm/common/ipc.h>
# include <crm/common/xml.h>
struct stonith_action_s;
typedef struct stonith_action_s stonith_action_t;
stonith_action_t *
stonith_action_create(const char *agent,
const char *_action,
const char *victim,
int timeout,
GHashTable * device_args,
GHashTable * port_map);
GPid
stonith_action_execute_async(stonith_action_t *action,
void *userdata,
void (*done)(GPid pid, int rc, const char *output, gpointer user_data));
int
stonith_action_execute(stonith_action_t *action,
int *agent_result,
char **output);
gboolean is_redhat_agent(const char *agent);
xmlNode *create_level_registration_xml(const char *node, int level,
stonith_key_value_t * device_list);
xmlNode *create_device_registration_xml(const char *id, const char *namespace, const char *agent,
stonith_key_value_t * params);
#define ST_LEVEL_MAX 10
#define F_STONITH_CLIENTID "st_clientid"
#define F_STONITH_CALLOPTS "st_callopt"
#define F_STONITH_CALLID "st_callid"
#define F_STONITH_CALLDATA "st_calldata"
#define F_STONITH_OPERATION "st_op"
#define F_STONITH_TARGET "st_target"
-#define F_STONITH_REMOTE "st_remote_op"
+#define F_STONITH_REMOTE_OP_ID "st_remote_op"
#define F_STONITH_RC "st_rc"
/*! Timeout period per a device execution */
#define F_STONITH_TIMEOUT "st_timeout"
#define F_STONITH_TOLERANCE "st_tolerance"
/*! Action specific timeout period returned in query of fencing devices. */
#define F_STONITH_ACTION_TIMEOUT "st_action_timeout"
#define F_STONITH_CALLBACK_TOKEN "st_async_id"
#define F_STONITH_CLIENTNAME "st_clientname"
#define F_STONITH_CLIENTNODE "st_clientnode"
#define F_STONITH_NOTIFY_TYPE "st_notify_type"
#define F_STONITH_NOTIFY_ACTIVATE "st_notify_activate"
#define F_STONITH_NOTIFY_DEACTIVATE "st_notify_deactivate"
#define F_STONITH_DELEGATE "st_delegate"
/*! The node initiating the stonith operation. If an operation
* is relayed, this is the last node the operation lands on. When
* in standalone mode, origin is the client's id that originated the
* operation. */
#define F_STONITH_ORIGIN "st_origin"
#define F_STONITH_HISTORY_LIST "st_history"
#define F_STONITH_DATE "st_date"
#define F_STONITH_STATE "st_state"
#define F_STONITH_LEVEL "st_level"
#define F_STONITH_ACTIVE "st_active"
#define F_STONITH_DEVICE "st_device_id"
#define F_STONITH_ACTION "st_device_action"
#define F_STONITH_MODE "st_mode"
#define T_STONITH_NG "stonith-ng"
#define T_STONITH_REPLY "st-reply"
/*! For async operations, an event from the server containing
* the total amount of time the server is allowing for the operation
* to take place is returned to the client. */
#define T_STONITH_TIMEOUT_VALUE "st-async-timeout-value"
#define T_STONITH_NOTIFY "st_notify"
#define STONITH_ATTR_ARGMAP "pcmk_arg_map"
#define STONITH_ATTR_HOSTARG "pcmk_host_argument"
#define STONITH_ATTR_HOSTMAP "pcmk_host_map"
#define STONITH_ATTR_HOSTLIST "pcmk_host_list"
#define STONITH_ATTR_HOSTCHECK "pcmk_host_check"
#define STONITH_ATTR_ACTION_OP "action"
#define STONITH_OP_EXEC "st_execute"
#define STONITH_OP_TIMEOUT_UPDATE "st_timeout_update"
#define STONITH_OP_QUERY "st_query"
#define STONITH_OP_FENCE "st_fence"
#define STONITH_OP_RELAY "st_relay"
#define STONITH_OP_CONFIRM "st_confirm"
#define STONITH_OP_DEVICE_ADD "st_device_register"
#define STONITH_OP_DEVICE_DEL "st_device_remove"
#define STONITH_OP_DEVICE_METADATA "st_device_metadata"
#define STONITH_OP_FENCE_HISTORY "st_fence_history"
#define STONITH_OP_LEVEL_ADD "st_level_add"
#define STONITH_OP_LEVEL_DEL "st_level_remove"
#define stonith_channel "st_command"
#define stonith_channel_callback "st_callback"
#endif
diff --git a/lib/fencing/st_client.c b/lib/fencing/st_client.c
index ce60494d3c..68d0753682 100644
--- a/lib/fencing/st_client.c
+++ b/lib/fencing/st_client.c
@@ -1,2273 +1,2273 @@
/*
* Copyright (c) 2004 Andrew Beekhof <andrew@beekhof.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser 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 <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <ctype.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <glib.h>
#include <dirent.h>
#include <libgen.h> /* Add it for compiling on OSX */
#include <crm/crm.h>
#include <crm/stonith-ng.h>
#include <crm/fencing/internal.h>
#include <crm/msg_xml.h>
#include <crm/common/xml.h>
#ifdef HAVE_STONITH_STONITH_H
# include <stonith/stonith.h>
# define LHA_STONITH_LIBRARY "libstonith.so.1"
static void *lha_agents_lib = NULL;
#endif
#include <crm/common/mainloop.h>
CRM_TRACE_INIT_DATA(stonith);
struct stonith_action_s {
char *agent;
char *action;
char *victim;
char *args;
int timeout;
int async;
void *userdata;
void (*done_cb)(GPid pid, gint status, const char *output, gpointer user_data);
/* async track data */
int fd_stdout;
int last_timeout_signo;
guint timer_sigterm;
guint timer_sigkill;
/* output data */
GPid pid;
int rc;
char *output;
};
typedef struct stonith_private_s {
char *token;
crm_ipc_t *ipc;
mainloop_io_t *source;
GHashTable *stonith_op_callback_table;
GList *notify_list;
void (*op_callback) (stonith_t * st, stonith_callback_data_t *data);
} stonith_private_t;
typedef struct stonith_notify_client_s {
const char *event;
const char *obj_id; /* implement one day */
const char *obj_type; /* implement one day */
void (*notify) (stonith_t * st, stonith_event_t *e);
} stonith_notify_client_t;
typedef struct stonith_callback_client_s {
void (*callback) (stonith_t * st, stonith_callback_data_t *data);
const char *id;
void *user_data;
gboolean only_success;
gboolean allow_timeout_updates;
struct timer_rec_s *timer;
} stonith_callback_client_t;
struct notify_blob_s {
stonith_t *stonith;
xmlNode *xml;
};
struct timer_rec_s {
int call_id;
int timeout;
guint ref;
stonith_t *stonith;
};
typedef int (*stonith_op_t) (const char *, int, const char *, xmlNode *,
xmlNode *, xmlNode *, xmlNode **, xmlNode **);
static const char META_TEMPLATE[] =
"<?xml version=\"1.0\"?>\n"
"<!DOCTYPE resource-agent SYSTEM \"ra-api-1.dtd\">\n"
"<resource-agent name=\"%s\">\n"
" <version>1.0</version>\n"
" <longdesc lang=\"en\">\n"
"%s\n"
" </longdesc>\n"
" <shortdesc lang=\"en\">%s</shortdesc>\n"
"%s\n"
" <actions>\n"
" <action name=\"start\" timeout=\"20\" />\n"
" <action name=\"stop\" timeout=\"15\" />\n"
" <action name=\"status\" timeout=\"20\" />\n"
" <action name=\"monitor\" timeout=\"20\" interval=\"3600\"/>\n"
" <action name=\"meta-data\" timeout=\"15\" />\n"
" </actions>\n"
" <special tag=\"heartbeat\">\n"
" <version>2.0</version>\n" " </special>\n" "</resource-agent>\n";
bool stonith_dispatch(stonith_t * st);
int stonith_dispatch_internal(const char *buffer, ssize_t length, gpointer userdata);
void stonith_perform_callback(stonith_t * stonith, xmlNode * msg, int call_id, int rc);
xmlNode *stonith_create_op(int call_id, const char *token, const char *op, xmlNode * data,
int call_options);
int stonith_send_command(stonith_t * stonith, const char *op, xmlNode * data,
xmlNode ** output_data, int call_options, int timeout);
static void stonith_connection_destroy(gpointer user_data);
static void stonith_send_notification(gpointer data, gpointer user_data);
static void
stonith_connection_destroy(gpointer user_data)
{
stonith_t *stonith = user_data;
stonith_private_t *native = NULL;
struct notify_blob_s blob;
crm_trace("Sending destroyed notification");
blob.stonith = stonith;
blob.xml = create_xml_node(NULL, "notify");
native = stonith->private;
native->ipc = NULL;
native->source = NULL;
stonith->state = stonith_disconnected;
crm_xml_add(blob.xml, F_TYPE, T_STONITH_NOTIFY);
crm_xml_add(blob.xml, F_SUBTYPE, T_STONITH_NOTIFY_DISCONNECT);
g_list_foreach(native->notify_list, stonith_send_notification, &blob);
free_xml(blob.xml);
}
xmlNode *
create_device_registration_xml(const char *id, const char *namespace, const char *agent,
stonith_key_value_t * params)
{
xmlNode *data = create_xml_node(NULL, F_STONITH_DEVICE);
xmlNode *args = create_xml_node(data, XML_TAG_ATTRS);
crm_xml_add(data, XML_ATTR_ID, id);
crm_xml_add(data, "origin", __FUNCTION__);
crm_xml_add(data, "agent", agent);
crm_xml_add(data, "namespace", namespace);
for (; params; params = params->next) {
hash2field((gpointer) params->key, (gpointer) params->value, args);
}
return data;
}
static int
stonith_api_register_device(stonith_t * st, int call_options,
const char *id, const char *namespace, const char *agent,
stonith_key_value_t * params)
{
int rc = 0;
xmlNode *data = NULL;
#if HAVE_STONITH_STONITH_H
namespace = get_stonith_provider(agent, namespace);
if (safe_str_eq(namespace, "heartbeat")) {
stonith_key_value_add(params, "plugin", agent);
agent = "fence_legacy";
}
#endif
data = create_device_registration_xml(id, namespace, agent, params);
rc = stonith_send_command(st, STONITH_OP_DEVICE_ADD, data, NULL, call_options, 0);
free_xml(data);
return rc;
}
static int
stonith_api_remove_device(stonith_t * st, int call_options, const char *name)
{
int rc = 0;
xmlNode *data = NULL;
data = create_xml_node(NULL, F_STONITH_DEVICE);
crm_xml_add(data, "origin", __FUNCTION__);
crm_xml_add(data, XML_ATTR_ID, name);
rc = stonith_send_command(st, STONITH_OP_DEVICE_DEL, data, NULL, call_options, 0);
free_xml(data);
return rc;
}
static int
stonith_api_remove_level(stonith_t * st, int options, const char *node, int level)
{
int rc = 0;
xmlNode *data = NULL;
data = create_xml_node(NULL, F_STONITH_LEVEL);
crm_xml_add(data, "origin", __FUNCTION__);
crm_xml_add(data, F_STONITH_TARGET, node);
crm_xml_add_int(data, XML_ATTR_ID, level);
rc = stonith_send_command(st, STONITH_OP_LEVEL_DEL, data, NULL, options, 0);
free_xml(data);
return rc;
}
xmlNode *
create_level_registration_xml(const char *node, int level, stonith_key_value_t * device_list)
{
xmlNode *data = create_xml_node(NULL, F_STONITH_LEVEL);
crm_xml_add_int(data, XML_ATTR_ID, level);
crm_xml_add(data, F_STONITH_TARGET, node);
crm_xml_add(data, "origin", __FUNCTION__);
for (; device_list; device_list = device_list->next) {
xmlNode *dev = create_xml_node(data, F_STONITH_DEVICE);
crm_xml_add(dev, XML_ATTR_ID, device_list->value);
}
return data;
}
static int
stonith_api_register_level(stonith_t * st, int options, const char *node, int level,
stonith_key_value_t * device_list)
{
int rc = 0;
xmlNode *data = create_level_registration_xml(node, level, device_list);
rc = stonith_send_command(st, STONITH_OP_LEVEL_ADD, data, NULL, options, 0);
free_xml(data);
return rc;
}
static void
append_arg(gpointer key, gpointer value, gpointer user_data)
{
int len = 3; /* =, \n, \0 */
int last = 0;
char **args = user_data;
CRM_CHECK(key != NULL, return);
CRM_CHECK(value != NULL, return);
if (strstr(key, "pcmk_")) {
return;
} else if (strstr(key, CRM_META)) {
return;
} else if (safe_str_eq(key, "crm_feature_set")) {
return;
}
len += strlen(key);
len += strlen(value);
if (*args != NULL) {
last = strlen(*args);
}
*args = realloc(*args, last + len);
crm_trace("Appending: %s=%s", (char *)key, (char *)value);
sprintf((*args) + last, "%s=%s\n", (char *)key, (char *)value);
}
static void
append_const_arg(const char *key, const char *value, char **arg_list)
{
char *glib_sucks_key = strdup(key);
char *glib_sucks_value = strdup(value);
append_arg(glib_sucks_key, glib_sucks_value, arg_list);
free(glib_sucks_value);
free(glib_sucks_key);
}
static void
append_host_specific_args(const char *victim, const char *map, GHashTable * params, char **arg_list)
{
char *name = NULL;
int last = 0, lpc = 0, max = 0;
if (map == NULL) {
/* The best default there is for now... */
crm_debug("Using default arg map: port=uname");
append_const_arg("port", victim, arg_list);
return;
}
max = strlen(map);
crm_debug("Processing arg map: %s", map);
for (; lpc < max + 1; lpc++) {
if (isalpha(map[lpc])) {
/* keep going */
} else if (map[lpc] == '=' || map[lpc] == ':') {
free(name);
name = calloc(1, 1 + lpc - last);
memcpy(name, map + last, lpc - last);
crm_debug("Got name: %s", name);
last = lpc + 1;
} else if (map[lpc] == 0 || map[lpc] == ',' || isspace(map[lpc])) {
char *param = NULL;
const char *value = NULL;
param = calloc(1, 1 + lpc - last);
memcpy(param, map + last, lpc - last);
last = lpc + 1;
crm_debug("Got key: %s", param);
if (name == NULL) {
crm_err("Misparsed '%s', found '%s' without a name", map, param);
free(param);
continue;
}
if (safe_str_eq(param, "uname")) {
value = victim;
} else {
char *key = crm_meta_name(param);
value = g_hash_table_lookup(params, key);
free(key);
}
if (value) {
crm_debug("Setting '%s'='%s' (%s) for %s", name, value, param, victim);
append_const_arg(name, value, arg_list);
} else {
crm_err("No node attribute '%s' for '%s'", name, victim);
}
free(name);
name = NULL;
free(param);
if (map[lpc] == 0) {
break;
}
} else if (isspace(map[lpc])) {
last = lpc;
}
}
free(name);
}
static char *
make_args(const char *action, const char *victim, GHashTable * device_args, GHashTable * port_map)
{
char buffer[512];
char *arg_list = NULL;
const char *value = NULL;
CRM_CHECK(action != NULL, return NULL);
if (device_args) {
g_hash_table_foreach(device_args, append_arg, &arg_list);
}
buffer[511] = 0;
snprintf(buffer, 511, "pcmk_%s_action", action);
if (device_args) {
value = g_hash_table_lookup(device_args, buffer);
}
if (value == NULL && device_args) {
/* Legacy support for early 1.1 releases - Remove for 1.4 */
snprintf(buffer, 511, "pcmk_%s_cmd", action);
value = g_hash_table_lookup(device_args, buffer);
}
if (value == NULL && device_args && safe_str_eq(action, "off")) {
/* Legacy support for late 1.1 releases - Remove for 1.4 */
value = g_hash_table_lookup(device_args, "pcmk_poweroff_action");
}
if (value) {
crm_info("Substituting action '%s' for requested operation '%s'", value, action);
action = value;
}
append_const_arg(STONITH_ATTR_ACTION_OP, action, &arg_list);
if (victim && device_args) {
const char *alias = victim;
const char *param = g_hash_table_lookup(device_args, STONITH_ATTR_HOSTARG);
if (port_map && g_hash_table_lookup(port_map, victim)) {
alias = g_hash_table_lookup(port_map, victim);
}
/* Always supply the node's name too:
* https://fedorahosted.org/cluster/wiki/FenceAgentAPI
*/
append_const_arg("nodename", victim, &arg_list);
/* Check if we need to supply the victim in any other form */
if (param == NULL) {
const char *map = g_hash_table_lookup(device_args, STONITH_ATTR_ARGMAP);
if (map == NULL) {
param = "port";
value = g_hash_table_lookup(device_args, param);
} else {
/* Legacy handling */
append_host_specific_args(alias, map, device_args, &arg_list);
value = map; /* Nothing more to do */
}
} else if (safe_str_eq(param, "none")) {
value = param; /* Nothing more to do */
} else {
value = g_hash_table_lookup(device_args, param);
}
/* Don't overwrite explictly set values for $param */
if (value == NULL || safe_str_eq(value, "dynamic")) {
crm_debug("Performing %s action for node '%s' as '%s=%s'", action, victim, param,
alias);
append_const_arg(param, alias, &arg_list);
}
}
crm_trace("Calculated: %s", arg_list);
return arg_list;
}
static gboolean
st_child_term(gpointer data)
{
int rc = 0;
stonith_action_t *track = data;
crm_info("Child %d timed out, sending SIGTERM", track->pid);
track->timer_sigterm = 0;
track->last_timeout_signo = SIGTERM;
rc = kill(track->pid, SIGTERM);
if(rc < 0) {
crm_perror(LOG_ERR, "Couldn't send SIGTERM to %d", track->pid);
}
return FALSE;
}
static gboolean
st_child_kill(gpointer data)
{
int rc = 0;
stonith_action_t *track = data;
crm_info("Child %d timed out, sending SIGKILL", track->pid);
track->timer_sigkill = 0;
track->last_timeout_signo = SIGKILL;
rc = kill(track->pid, SIGKILL);
if(rc < 0) {
crm_perror(LOG_ERR, "Couldn't send SIGKILL to %d", track->pid);
}
return FALSE;
}
static void
stonith_action_destroy(stonith_action_t *action)
{
if (action->timer_sigterm > 0) {
g_source_remove(action->timer_sigterm);
}
if (action->timer_sigkill > 0) {
g_source_remove(action->timer_sigkill);
}
if (action->fd_stdout) {
close(action->fd_stdout);
}
free(action->agent);
free(action->args);
free(action->output);
free(action->action);
free(action->victim);
free(action);
}
stonith_action_t *
stonith_action_create(const char *agent,
const char *_action,
const char *victim,
int timeout,
GHashTable * device_args,
GHashTable * port_map)
{
stonith_action_t *action;
action = calloc(1, sizeof(stonith_action_t));
crm_info("Initiating action %s for agent %s (target=%s)", _action, agent, victim);
action->args = make_args(_action, victim, device_args, port_map);
action->agent = strdup(agent);
action->action = strdup(_action);
if (victim) {
action->victim = strdup(victim);
}
action->timeout = timeout;
return action;
}
#define READ_MAX 500
static char*
read_output(int fd)
{
char buffer[READ_MAX];
char *output = NULL;
int len = 0;
int more = 0;
if (!fd) {
return NULL;
}
do {
errno = 0;
memset(&buffer, 0, READ_MAX);
more = read(fd, buffer, READ_MAX-1);
if (more > 0) {
crm_trace("Got %d more bytes: %s", more, buffer);
output = realloc(output, len + more + 1);
sprintf(output+len, "%s", buffer);
len += more;
}
} while (more == (READ_MAX-1) || (more < 0 && errno == EINTR));
return output;
}
static void
stonith_action_async_done(GPid pid, gint status, gpointer user_data)
{
int rc = -pcmk_err_generic;
stonith_action_t *action = user_data;
if (action->timer_sigterm > 0) {
g_source_remove(action->timer_sigterm);
}
if (action->timer_sigkill > 0) {
g_source_remove(action->timer_sigkill);
}
if(action->last_timeout_signo) {
rc = -ETIME;
crm_notice("Child process %d performing action '%s' timed out with signal %d",
pid, action->action, action->last_timeout_signo);
} else if(WIFSIGNALED(status)) {
int signo = WTERMSIG(status);
rc = -ECONNABORTED;
crm_notice("Child process %d performing action '%s' timed out with signal %d",
pid, action->action, signo);
} else if(WIFEXITED(status)) {
rc = WEXITSTATUS(status);
crm_debug("Child process %d performing action '%s' exited with rc %d",
pid, action->action, rc);
}
action->rc = rc;
action->output = read_output(action->fd_stdout);
if (action->done_cb) {
action->done_cb(pid, action->rc, action->output, action->userdata);
}
stonith_action_destroy(action);
}
static int
internal_stonith_action_execute(stonith_action_t *action)
{
int pid, status, len, rc = -EPROTO;
int ret;
int total = 0;
int p_read_fd, p_write_fd; /* parent read/write file descriptors */
int c_read_fd, c_write_fd; /* child read/write file descriptors */
int fd1[2];
int fd2[2];
c_read_fd = c_write_fd = p_read_fd = p_write_fd = -1;
if (action->args == NULL || action->agent == NULL)
goto fail;
len = strlen(action->args);
if (pipe(fd1))
goto fail;
p_read_fd = fd1[0];
c_write_fd = fd1[1];
if (pipe(fd2))
goto fail;
c_read_fd = fd2[0];
p_write_fd = fd2[1];
crm_debug("forking");
pid = fork();
if (pid < 0) {
rc = -ECHILD;
goto fail;
}
if (!pid) {
/* child */
close(1);
/* coverity[leaked_handle] False positive */
if (dup(c_write_fd) < 0)
goto fail;
close(2);
/* coverity[leaked_handle] False positive */
if (dup(c_write_fd) < 0)
goto fail;
close(0);
/* coverity[leaked_handle] False positive */
if (dup(c_read_fd) < 0)
goto fail;
/* keep c_write_fd open so parent can report all errors. */
close(c_read_fd);
close(p_read_fd);
close(p_write_fd);
execlp(action->agent, action->agent, NULL);
exit(EXIT_FAILURE);
}
/* parent */
action->pid = pid;
ret = fcntl(p_read_fd, F_SETFL, fcntl(p_read_fd, F_GETFL, 0) | O_NONBLOCK);
if(ret < 0) {
crm_perror(LOG_NOTICE, "Could not change the output of %s to be non-blocking", action->agent);
}
do {
crm_debug("sending args");
ret = write(p_write_fd, action->args + total, len - total);
if (ret > 0) {
total += ret;
}
} while (errno == EINTR && total < len);
if (total != len) {
crm_perror(LOG_ERR, "Sent %d not %d bytes", total, len);
if (ret >= 0) {
rc = -EREMOTEIO;
}
goto fail;
}
close(p_write_fd);
/* async */
if (action->async) {
action->fd_stdout = p_read_fd;
g_child_watch_add(pid, stonith_action_async_done, action);
crm_trace("Op: %s on %s, pid: %d, timeout: %ds", action->action, action->agent, pid, action->timeout);
action->last_timeout_signo = 0;
if (action->timeout) {
action->timer_sigterm = g_timeout_add(1000*action->timeout, st_child_term, action);
action->timer_sigkill = g_timeout_add(1000*(action->timeout+5), st_child_kill, action);
} else {
crm_err("No timeout set for stonith operation %s with device %s",
action->action, action->agent);
}
close(c_write_fd);
close(c_read_fd);
return 0;
} else {
/* sync */
int timeout = action->timeout + 1;
pid_t p = 0;
while (action->timeout < 0 || timeout > 0) {
p = waitpid(pid, &status, WNOHANG);
if (p > 0) {
break;
}
sleep(1);
timeout--;
}
if (timeout == 0) {
int killrc = kill(pid, 9 /*SIGKILL*/);
if (killrc && errno != ESRCH) {
crm_err("kill(%d, KILL) failed: %s (%d)",
pid, pcmk_strerror(errno), errno);
}
p = waitpid(pid, &status, WNOHANG);
}
if (p <= 0) {
crm_perror(LOG_ERR, "waitpid(%d)", pid);
} else if (p != pid) {
crm_err("Waited for %d, got %d", pid, p);
}
action->output = read_output(p_read_fd);
action->rc = -ECONNABORTED;
rc = action->rc;
if (timeout == 0) {
action->rc = -ETIME;
} else if (WIFEXITED(status)) {
crm_debug("result = %d", WEXITSTATUS(status));
action->rc = -WEXITSTATUS(status);
rc = 0;
} else if (WIFSIGNALED(status)) {
crm_err("call %s for %s exited due to signal %d", action->action, action->agent, WTERMSIG(status));
} else {
crm_err("call %s for %s exited abnormally. stopped=%d, continued=%d",
action->action, action->agent, WIFSTOPPED(status), WIFCONTINUED(status));
}
}
fail:
if (p_read_fd >= 0) {
close(p_read_fd);
}
if (p_write_fd >= 0) {
close(p_write_fd);
}
if (c_read_fd >= 0) {
close(c_read_fd);
}
if (c_write_fd >= 0) {
close(c_write_fd);
}
return rc;
}
GPid
stonith_action_execute_async(stonith_action_t *action,
void *userdata,
void (*done)(GPid pid, int rc, const char *output, gpointer user_data))
{
int rc = 0;
if (!action) {
return -1;
}
action->userdata = userdata;
action->done_cb = done;
action->async = 1;
rc = internal_stonith_action_execute(action);
return rc ? rc : action->pid;
}
int
stonith_action_execute(stonith_action_t *action,
int *agent_result,
char **output)
{
int rc = 0;
if (!action) {
return -1;
}
rc = internal_stonith_action_execute(action);
if (rc) {
/* error */
return rc;
}
if (agent_result) {
*agent_result = action->rc;
}
if (output) {
*output = action->output;
action->output = NULL; /* handed it off, do not free */
}
stonith_action_destroy(action);
return rc;
}
static int
stonith_api_device_list(stonith_t * stonith, int call_options, const char *namespace,
stonith_key_value_t ** devices, int timeout)
{
int count = 0;
if (devices == NULL) {
crm_err("Parameter error: stonith_api_device_list");
return -EFAULT;
}
/* Include Heartbeat agents */
if (namespace == NULL || safe_str_eq("heartbeat", namespace)) {
#if HAVE_STONITH_STONITH_H
static gboolean need_init = TRUE;
char **entry = NULL;
char **type_list = NULL;
static char **(*type_list_fn) (void) = NULL;
static void (*type_free_fn) (char **) = NULL;
if(need_init) {
need_init = FALSE;
type_list_fn = find_library_function(&lha_agents_lib, LHA_STONITH_LIBRARY, "stonith_types", FALSE);
type_free_fn = find_library_function(&lha_agents_lib, LHA_STONITH_LIBRARY, "stonith_free_hostlist", FALSE);
}
if(type_list_fn) {
type_list = (*type_list_fn)();
}
for (entry = type_list; entry != NULL && *entry; ++entry) {
crm_trace("Added: %s", *entry);
*devices = stonith_key_value_add(*devices, NULL, *entry);
count++;
}
if (type_list && type_free_fn) {
(*type_free_fn)(type_list);
}
#else
if(namespace != NULL) {
return -EINVAL; /* Heartbeat agents not supported */
}
#endif
}
/* Include Red Hat agents, basically: ls -1 @sbin_dir@/fence_* */
if (namespace == NULL || safe_str_eq("redhat", namespace)) {
struct dirent **namelist;
int file_num = scandir(RH_STONITH_DIR, &namelist, 0, alphasort);
if (file_num > 0) {
struct stat prop;
char buffer[FILENAME_MAX + 1];
while (file_num--) {
if ('.' == namelist[file_num]->d_name[0]) {
free(namelist[file_num]);
continue;
} else if (0 != strncmp(RH_STONITH_PREFIX,
namelist[file_num]->d_name, strlen(RH_STONITH_PREFIX))) {
free(namelist[file_num]);
continue;
}
snprintf(buffer, FILENAME_MAX, "%s/%s", RH_STONITH_DIR, namelist[file_num]->d_name);
if (stat(buffer, &prop) == 0 && S_ISREG(prop.st_mode)) {
*devices = stonith_key_value_add(*devices, NULL, namelist[file_num]->d_name);
count++;
}
free(namelist[file_num]);
}
free(namelist);
}
}
return count;
}
static int
stonith_api_device_metadata(stonith_t * stonith, int call_options, const char *agent,
const char *namespace, char **output, int timeout)
{
int rc = 0;
char *buffer = NULL;
const char *provider = get_stonith_provider(agent, namespace);
crm_trace("looking up %s/%s metadata", agent, provider);
/* By having this in a library, we can access it from stonith_admin
* when neither lrmd or stonith-ng are running
* Important for the crm shell's validations...
*/
if (safe_str_eq(provider, "redhat")) {
stonith_action_t *action = stonith_action_create(agent, "metadata", NULL, 5, NULL, NULL);
int exec_rc = stonith_action_execute(action, &rc, &buffer);
if (exec_rc < 0 || rc != 0 || buffer == NULL) {
crm_debug("Query failed: %d %d: %s", exec_rc, rc, crm_str(buffer));
free(buffer); /* Just in case */
return -EINVAL;
} else {
xmlNode *xml = string2xml(buffer);
xmlNode *actions = NULL;
xmlXPathObject *xpathObj = NULL;
xpathObj = xpath_search(xml, "//actions");
if (xpathObj && xpathObj->nodesetval->nodeNr > 0) {
actions = getXpathResult(xpathObj, 0);
}
/* Now fudge the metadata so that the start/stop actions appear */
xpathObj = xpath_search(xml, "//action[@name='stop']");
if (xpathObj == NULL || xpathObj->nodesetval->nodeNr <= 0) {
xmlNode *tmp = NULL;
tmp = create_xml_node(actions, "action");
crm_xml_add(tmp, "name", "stop");
crm_xml_add(tmp, "timeout", "20s");
tmp = create_xml_node(actions, "action");
crm_xml_add(tmp, "name", "start");
crm_xml_add(tmp, "timeout", "20s");
}
/* Now fudge the metadata so that the port isn't required in the configuration */
xpathObj = xpath_search(xml, "//parameter[@name='port']");
if (xpathObj && xpathObj->nodesetval->nodeNr > 0) {
/* We'll fill this in */
xmlNode *tmp = getXpathResult(xpathObj, 0);
crm_xml_add(tmp, "required", "0");
}
free(buffer);
buffer = dump_xml_formatted(xml);
free_xml(xml);
}
} else {
#if !HAVE_STONITH_STONITH_H
return -EINVAL; /* Heartbeat agents not supported */
#else
int bufferlen = 0;
static const char *no_parameter_info = "<!-- no value -->";
Stonith *stonith_obj = NULL;
static gboolean need_init = TRUE;
static Stonith *(*st_new_fn) (const char *) = NULL;
static const char *(*st_info_fn) (Stonith *, int) = NULL;
static void (*st_del_fn) (Stonith *) = NULL;
if(need_init) {
need_init = FALSE;
st_new_fn = find_library_function(&lha_agents_lib, LHA_STONITH_LIBRARY, "stonith_new", FALSE);
st_del_fn = find_library_function(&lha_agents_lib, LHA_STONITH_LIBRARY, "stonith_delete", FALSE);
st_info_fn = find_library_function(&lha_agents_lib, LHA_STONITH_LIBRARY, "stonith_get_info", FALSE);
}
if (lha_agents_lib && st_new_fn && st_del_fn && st_info_fn) {
char *xml_meta_longdesc = NULL;
char *xml_meta_shortdesc = NULL;
char *meta_param = NULL;
char *meta_longdesc = NULL;
char *meta_shortdesc = NULL;
stonith_obj = (*st_new_fn) (agent);
if(stonith_obj) {
meta_longdesc = strdup((*st_info_fn)(stonith_obj, ST_DEVICEDESCR));
if (meta_longdesc == NULL) {
crm_warn("no long description in %s's metadata.", agent);
meta_longdesc = strdup(no_parameter_info);
}
meta_shortdesc = strdup((*st_info_fn)(stonith_obj, ST_DEVICEID));
if (meta_shortdesc == NULL) {
crm_warn("no short description in %s's metadata.", agent);
meta_shortdesc = strdup(no_parameter_info);
}
meta_param = strdup((*st_info_fn)(stonith_obj, ST_CONF_XML));
if (meta_param == NULL) {
crm_warn("no list of parameters in %s's metadata.", agent);
meta_param = strdup(no_parameter_info);
}
(*st_del_fn)(stonith_obj);
} else {
return -EINVAL; /* Heartbeat agents not supported */
}
xml_meta_longdesc =
(char *)xmlEncodeEntitiesReentrant(NULL, (const unsigned char *)meta_longdesc);
xml_meta_shortdesc =
(char *)xmlEncodeEntitiesReentrant(NULL, (const unsigned char *)meta_shortdesc);
bufferlen = strlen(META_TEMPLATE) + strlen(agent)
+ strlen(xml_meta_longdesc) + strlen(xml_meta_shortdesc)
+ strlen(meta_param) + 1;
buffer = calloc(1, bufferlen);
snprintf(buffer, bufferlen - 1, META_TEMPLATE,
agent, xml_meta_longdesc, xml_meta_shortdesc, meta_param);
xmlFree(xml_meta_longdesc);
xmlFree(xml_meta_shortdesc);
free(meta_shortdesc);
free(meta_longdesc);
free(meta_param);
}
#endif
}
if (output) {
*output = buffer;
} else {
free(buffer);
}
return rc;
}
static int
stonith_api_query(stonith_t * stonith, int call_options, const char *target,
stonith_key_value_t ** devices, int timeout)
{
int rc = 0, lpc = 0, max = 0;
xmlNode *data = NULL;
xmlNode *output = NULL;
xmlXPathObjectPtr xpathObj = NULL;
CRM_CHECK(devices != NULL, return -EINVAL);
data = create_xml_node(NULL, F_STONITH_DEVICE);
crm_xml_add(data, "origin", __FUNCTION__);
crm_xml_add(data, F_STONITH_TARGET, target);
crm_xml_add(data, F_STONITH_ACTION, "off");
rc = stonith_send_command(stonith, STONITH_OP_QUERY, data, &output, call_options, timeout);
if (rc < 0) {
return rc;
}
xpathObj = xpath_search(output, "//@agent");
if (xpathObj) {
max = xpathObj->nodesetval->nodeNr;
for (lpc = 0; lpc < max; lpc++) {
xmlNode *match = getXpathResult(xpathObj, lpc);
CRM_CHECK(match != NULL, continue);
crm_info("%s[%d] = %s", "//@agent", lpc, xmlGetNodePath(match));
*devices = stonith_key_value_add(*devices, NULL, crm_element_value(match, XML_ATTR_ID));
}
}
free_xml(output);
free_xml(data);
return max;
}
static int
stonith_api_call(stonith_t * stonith,
int call_options,
const char *id,
const char *action,
const char *victim,
int timeout,
xmlNode **output)
{
int rc = 0;
xmlNode *data = NULL;
data = create_xml_node(NULL, F_STONITH_DEVICE);
crm_xml_add(data, "origin", __FUNCTION__);
crm_xml_add(data, F_STONITH_DEVICE, id);
crm_xml_add(data, F_STONITH_ACTION, action);
crm_xml_add(data, F_STONITH_TARGET, victim);
rc = stonith_send_command(stonith, STONITH_OP_EXEC, data, output, call_options, timeout);
free_xml(data);
return rc;
}
static int
stonith_api_list(stonith_t * stonith, int call_options, const char *id, char **list_info, int timeout)
{
int rc;
xmlNode *output = NULL;
rc = stonith_api_call(stonith, call_options, id, "list", NULL, timeout, &output);
if (output && list_info) {
const char *list_str;
list_str = crm_element_value(output, "st_output");
if (list_str) {
*list_info = strdup(list_str);
}
}
if (output) {
free_xml(output);
}
return rc;
}
static int
stonith_api_monitor(stonith_t * stonith, int call_options, const char *id, int timeout)
{
return stonith_api_call(stonith, call_options, id, "monitor", NULL, timeout, NULL);
}
static int
stonith_api_status(stonith_t * stonith, int call_options, const char *id, const char *port, int timeout)
{
return stonith_api_call(stonith, call_options, id, "status", port, timeout, NULL);
}
static int
stonith_api_fence(stonith_t * stonith, int call_options, const char *node, const char *action,
int timeout, int tolerance)
{
int rc = 0;
xmlNode *data = NULL;
data = create_xml_node(NULL, __FUNCTION__);
crm_xml_add(data, F_STONITH_TARGET, node);
crm_xml_add(data, F_STONITH_ACTION, action);
crm_xml_add_int(data, F_STONITH_TIMEOUT, timeout);
crm_xml_add_int(data, F_STONITH_TOLERANCE, tolerance);
rc = stonith_send_command(stonith, STONITH_OP_FENCE, data, NULL, call_options, timeout);
free_xml(data);
return rc;
}
static int
stonith_api_confirm(stonith_t * stonith, int call_options, const char *target)
{
return stonith_api_fence(stonith, call_options | st_opt_manual_ack, target, "off", 0, 0);
}
static int
stonith_api_history(stonith_t * stonith, int call_options, const char *node,
stonith_history_t ** history, int timeout)
{
int rc = 0;
xmlNode *data = NULL;
xmlNode *output = NULL;
stonith_history_t *last = NULL;
*history = NULL;
if (node) {
data = create_xml_node(NULL, __FUNCTION__);
crm_xml_add(data, F_STONITH_TARGET, node);
}
rc = stonith_send_command(stonith, STONITH_OP_FENCE_HISTORY, data, &output,
call_options | st_opt_sync_call, timeout);
free_xml(data);
if (rc == 0) {
xmlNode *op = NULL;
xmlNode *reply = get_xpath_object("//" F_STONITH_HISTORY_LIST, output, LOG_ERR);
for (op = __xml_first_child(reply); op != NULL; op = __xml_next(op)) {
stonith_history_t *kvp;
kvp = calloc(1, sizeof(stonith_history_t));
kvp->target = crm_element_value_copy(op, F_STONITH_TARGET);
kvp->action = crm_element_value_copy(op, F_STONITH_ACTION);
kvp->origin = crm_element_value_copy(op, F_STONITH_ORIGIN);
kvp->delegate = crm_element_value_copy(op, F_STONITH_DELEGATE);
crm_element_value_int(op, F_STONITH_DATE, &kvp->completed);
crm_element_value_int(op, F_STONITH_STATE, &kvp->state);
if (last) {
last->next = kvp;
} else {
*history = kvp;
}
last = kvp;
}
}
return rc;
}
gboolean
is_redhat_agent(const char *agent)
{
int rc = 0;
struct stat prop;
char buffer[FILENAME_MAX + 1];
snprintf(buffer, FILENAME_MAX, "%s/%s", RH_STONITH_DIR, agent);
rc = stat(buffer, &prop);
if (rc >= 0 && S_ISREG(prop.st_mode)) {
return TRUE;
}
return FALSE;
}
const char *
get_stonith_provider(const char *agent, const char *provider)
{
/* This function sucks */
if (is_redhat_agent(agent)) {
return "redhat";
#if HAVE_STONITH_STONITH_H
} else {
Stonith *stonith_obj = NULL;
static gboolean need_init = TRUE;
static Stonith *(*st_new_fn) (const char *) = NULL;
static void (*st_del_fn) (Stonith *) = NULL;
if(need_init) {
need_init = FALSE;
st_new_fn = find_library_function(&lha_agents_lib, LHA_STONITH_LIBRARY, "stonith_new", FALSE);
st_del_fn = find_library_function(&lha_agents_lib, LHA_STONITH_LIBRARY, "stonith_delete", FALSE);
}
if (lha_agents_lib && st_new_fn && st_del_fn) {
stonith_obj = (*st_new_fn) (agent);
if(stonith_obj) {
(*st_del_fn)(stonith_obj);
return "heartbeat";
}
}
#endif
}
crm_err("No such device: %s", agent);
return NULL;
}
static gint
stonithlib_GCompareFunc(gconstpointer a, gconstpointer b)
{
int rc = 0;
const stonith_notify_client_t *a_client = a;
const stonith_notify_client_t *b_client = b;
CRM_CHECK(a_client->event != NULL && b_client->event != NULL, return 0);
rc = strcmp(a_client->event, b_client->event);
if (rc == 0) {
if (a_client->notify == NULL || b_client->notify == NULL) {
return 0;
} else if (a_client->notify == b_client->notify) {
return 0;
} else if (((long)a_client->notify) < ((long)b_client->notify)) {
crm_err("callbacks for %s are not equal: %p vs. %p",
a_client->event, a_client->notify, b_client->notify);
return -1;
}
crm_err("callbacks for %s are not equal: %p vs. %p",
a_client->event, a_client->notify, b_client->notify);
return 1;
}
return rc;
}
xmlNode *
stonith_create_op(int call_id, const char *token, const char *op, xmlNode * data, int call_options)
{
xmlNode *op_msg = create_xml_node(NULL, "stonith_command");
CRM_CHECK(op_msg != NULL, return NULL);
CRM_CHECK(token != NULL, return NULL);
crm_xml_add(op_msg, F_XML_TAGNAME, "stonith_command");
crm_xml_add(op_msg, F_TYPE, T_STONITH_NG);
crm_xml_add(op_msg, F_STONITH_CALLBACK_TOKEN, token);
crm_xml_add(op_msg, F_STONITH_OPERATION, op);
crm_xml_add_int(op_msg, F_STONITH_CALLID, call_id);
crm_trace("Sending call options: %.8lx, %d", (long)call_options, call_options);
crm_xml_add_int(op_msg, F_STONITH_CALLOPTS, call_options);
if (data != NULL) {
add_message_xml(op_msg, F_STONITH_CALLDATA, data);
}
return op_msg;
}
static void
stonith_destroy_op_callback(gpointer data)
{
stonith_callback_client_t *blob = data;
if (blob->timer && blob->timer->ref > 0) {
g_source_remove(blob->timer->ref);
}
free(blob->timer);
free(blob);
}
static int
stonith_api_signoff(stonith_t * stonith)
{
stonith_private_t *native = stonith->private;
crm_debug("Signing out of the STONITH Service");
if (native->source != NULL) {
/* Attached to mainloop */
mainloop_del_ipc_client(native->source);
native->source = NULL;
native->ipc = NULL;
} else if(native->ipc) {
/* Not attached to mainloop */
crm_ipc_t *ipc = native->ipc;
native->ipc = NULL;
crm_ipc_close(ipc);
crm_ipc_destroy(ipc);
}
stonith->state = stonith_disconnected;
return pcmk_ok;
}
static int
stonith_api_signon(stonith_t * stonith, const char *name, int *stonith_fd)
{
int rc = pcmk_ok;
stonith_private_t *native = stonith->private;
static struct ipc_client_callbacks st_callbacks =
{
.dispatch = stonith_dispatch_internal,
.destroy = stonith_connection_destroy
};
crm_trace("Connecting command channel");
stonith->state = stonith_connected_command;
if(stonith_fd) {
/* No mainloop */
native->ipc = crm_ipc_new("stonith-ng", 0);
if(native->ipc && crm_ipc_connect(native->ipc)) {
*stonith_fd = crm_ipc_get_fd(native->ipc);
} else if(native->ipc) {
rc = -ENOTCONN;
}
} else {
/* With mainloop */
native->source = mainloop_add_ipc_client("stonith-ng", G_PRIORITY_MEDIUM, 0, stonith, &st_callbacks);
native->ipc = mainloop_get_ipc_client(native->source);
}
if (native->ipc == NULL) {
crm_debug("Could not connect to the Stonith API");
rc = -ENOTCONN;
}
if (rc == pcmk_ok) {
xmlNode *reply = NULL;
xmlNode *hello = create_xml_node(NULL, "stonith_command");
crm_xml_add(hello, F_TYPE, T_STONITH_NG);
crm_xml_add(hello, F_STONITH_OPERATION, CRM_OP_REGISTER);
crm_xml_add(hello, F_STONITH_CLIENTNAME, name);
rc = crm_ipc_send(native->ipc, hello, crm_ipc_client_response, -1, &reply);
if(rc < 0) {
crm_perror(LOG_DEBUG, "Couldn't complete registration with the fencing API: %d", rc);
rc = -ECOMM;
} else if(reply == NULL) {
crm_err("Did not receive registration reply");
rc = -EPROTO;
} else {
const char *msg_type = crm_element_value(reply, F_STONITH_OPERATION);
const char *tmp_ticket = crm_element_value(reply, F_STONITH_CLIENTID);
if (safe_str_neq(msg_type, CRM_OP_REGISTER)) {
crm_err("Invalid registration message: %s", msg_type);
crm_log_xml_err(reply, "Bad reply");
rc = -EPROTO;
} else if (tmp_ticket == NULL) {
crm_err("No registration token provided");
crm_log_xml_err(reply, "Bad reply");
rc = -EPROTO;
} else {
crm_trace("Obtained registration token: %s", tmp_ticket);
native->token = strdup(tmp_ticket);
rc = pcmk_ok;
}
}
free_xml(reply);
free_xml(hello);
}
if (rc == pcmk_ok) {
#if HAVE_MSGFROMIPC_TIMEOUT
stonith->call_timeout = MAX_IPC_DELAY;
#endif
crm_debug("Connection to STONITH successful");
return pcmk_ok;
}
crm_debug("Connection to STONITH failed: %s", pcmk_strerror(rc));
stonith->cmds->disconnect(stonith);
return rc;
}
static int
stonith_set_notification(stonith_t * stonith, const char *callback, int enabled)
{
xmlNode *notify_msg = create_xml_node(NULL, __FUNCTION__);
stonith_private_t *native = stonith->private;
if (stonith->state != stonith_disconnected) {
int rc;
crm_xml_add(notify_msg, F_STONITH_OPERATION, T_STONITH_NOTIFY);
if (enabled) {
crm_xml_add(notify_msg, F_STONITH_NOTIFY_ACTIVATE, callback);
} else {
crm_xml_add(notify_msg, F_STONITH_NOTIFY_DEACTIVATE, callback);
}
rc = crm_ipc_send(native->ipc, notify_msg, crm_ipc_client_response, -1, NULL);
if(rc < 0) {
crm_perror(LOG_DEBUG, "Couldn't register for fencing notifications: %d", rc);
rc = -ECOMM;
}
}
free_xml(notify_msg);
return pcmk_ok;
}
static int
stonith_api_add_notification(stonith_t * stonith, const char *event,
void (*callback) (stonith_t * stonith, stonith_event_t *e))
{
GList *list_item = NULL;
stonith_notify_client_t *new_client = NULL;
stonith_private_t *private = NULL;
private = stonith->private;
crm_trace("Adding callback for %s events (%d)", event, g_list_length(private->notify_list));
new_client = calloc(1, sizeof(stonith_notify_client_t));
new_client->event = event;
new_client->notify = callback;
list_item = g_list_find_custom(private->notify_list, new_client, stonithlib_GCompareFunc);
if (list_item != NULL) {
crm_warn("Callback already present");
free(new_client);
return -ENOTUNIQ;
} else {
private->notify_list = g_list_append(private->notify_list, new_client);
stonith_set_notification(stonith, event, 1);
crm_trace("Callback added (%d)", g_list_length(private->notify_list));
}
return pcmk_ok;
}
static int
stonith_api_del_notification(stonith_t * stonith, const char *event)
{
GList *list_item = NULL;
stonith_notify_client_t *new_client = NULL;
stonith_private_t *private = NULL;
crm_debug("Removing callback for %s events", event);
private = stonith->private;
new_client = calloc(1, sizeof(stonith_notify_client_t));
new_client->event = event;
new_client->notify = NULL;
list_item = g_list_find_custom(private->notify_list, new_client, stonithlib_GCompareFunc);
stonith_set_notification(stonith, event, 0);
if (list_item != NULL) {
stonith_notify_client_t *list_client = list_item->data;
private->notify_list = g_list_remove(private->notify_list, list_client);
free(list_client);
crm_trace("Removed callback");
} else {
crm_trace("Callback not present");
}
free(new_client);
return pcmk_ok;
}
static gboolean
stonith_async_timeout_handler(gpointer data)
{
struct timer_rec_s *timer = data;
crm_err("Async call %d timed out after %dms", timer->call_id, timer->timeout);
stonith_perform_callback(timer->stonith, NULL, timer->call_id, -ETIME);
/* Always return TRUE, never remove the handler
* We do that in stonith_del_callback()
*/
return TRUE;
}
static void
set_callback_timeout(stonith_callback_client_t *callback, stonith_t *stonith, int call_id, int timeout)
{
struct timer_rec_s *async_timer = callback->timer;
if (timeout <= 0) {
return;
}
if (!async_timer) {
async_timer = calloc(1, sizeof(struct timer_rec_s));
callback->timer = async_timer;
}
async_timer->stonith = stonith;
async_timer->call_id = call_id;
/* Allow a fair bit of grace to allow the server to tell us of a timeout
* This is only a fallback
*/
async_timer->timeout = (timeout + 60) * 1000;
if (async_timer->ref) {
g_source_remove(async_timer->ref);
}
async_timer->ref = g_timeout_add(async_timer->timeout, stonith_async_timeout_handler, async_timer);
}
static void
update_callback_timeout(int call_id, int timeout, stonith_t *st)
{
stonith_callback_client_t *callback = NULL;
stonith_private_t *private = st->private;
callback = g_hash_table_lookup(private->stonith_op_callback_table, GINT_TO_POINTER(call_id));
if (!callback || !callback->allow_timeout_updates) {
return;
}
set_callback_timeout(callback, st, call_id, timeout);
}
static void
invoke_callback(stonith_t *st, int call_id, int rc, void *userdata,
void (*callback) (stonith_t * st, stonith_callback_data_t *data))
{
stonith_callback_data_t data = { 0, };
data.call_id = call_id;
data.rc = rc;
data.userdata = userdata;
callback(st, &data);
}
static int
stonith_api_add_callback(stonith_t * stonith, int call_id, int timeout, int options,
void *user_data, const char *callback_name,
void (*callback) (stonith_t * st, stonith_callback_data_t *data))
{
stonith_callback_client_t *blob = NULL;
stonith_private_t *private = NULL;
CRM_CHECK(stonith != NULL, return -EINVAL);
CRM_CHECK(stonith->private != NULL, return -EINVAL);
private = stonith->private;
if (call_id == 0) {
private->op_callback = callback;
} else if (call_id < 0) {
if (!(options & st_opt_report_only_success)) {
crm_trace("Call failed, calling %s: %s",
callback_name, pcmk_strerror(call_id));
invoke_callback(stonith, call_id, call_id, user_data, callback);
} else {
crm_warn("STONITH call failed: %s", pcmk_strerror(call_id));
}
return FALSE;
}
blob = calloc(1, sizeof(stonith_callback_client_t));
blob->id = callback_name;
blob->only_success = (options & st_opt_report_only_success) ? TRUE : FALSE;
blob->user_data = user_data;
blob->callback = callback;
blob->allow_timeout_updates = (options & st_opt_timeout_updates) ? TRUE : FALSE;
if (timeout > 0) {
set_callback_timeout(blob, stonith, call_id, timeout);
}
g_hash_table_insert(private->stonith_op_callback_table, GINT_TO_POINTER(call_id), blob);
crm_trace("Added callback to %s for call %d", callback_name, call_id);
return TRUE;
}
static int
stonith_api_del_callback(stonith_t * stonith, int call_id, bool all_callbacks)
{
stonith_private_t *private = stonith->private;
if (all_callbacks) {
private->op_callback = NULL;
g_hash_table_destroy(private->stonith_op_callback_table);
private->stonith_op_callback_table = g_hash_table_new_full(g_direct_hash, g_direct_equal,
NULL,
stonith_destroy_op_callback);
} else if (call_id == 0) {
private->op_callback = NULL;
} else {
g_hash_table_remove(private->stonith_op_callback_table, GINT_TO_POINTER(call_id));
}
return pcmk_ok;
}
static void
stonith_dump_pending_op(gpointer key, gpointer value, gpointer user_data)
{
int call = GPOINTER_TO_INT(key);
stonith_callback_client_t *blob = value;
crm_debug("Call %d (%s): pending", call, crm_str(blob->id));
}
void
stonith_dump_pending_callbacks(stonith_t * stonith)
{
stonith_private_t *private = stonith->private;
if (private->stonith_op_callback_table == NULL) {
return;
}
return g_hash_table_foreach(private->stonith_op_callback_table, stonith_dump_pending_op, NULL);
}
void
stonith_perform_callback(stonith_t * stonith, xmlNode * msg, int call_id, int rc)
{
stonith_private_t *private = NULL;
stonith_callback_client_t *blob = NULL;
stonith_callback_client_t local_blob;
CRM_CHECK(stonith != NULL, return);
CRM_CHECK(stonith->private != NULL, return);
private = stonith->private;
local_blob.id = NULL;
local_blob.callback = NULL;
local_blob.user_data = NULL;
local_blob.only_success = FALSE;
if (msg != NULL) {
crm_element_value_int(msg, F_STONITH_RC, &rc);
crm_element_value_int(msg, F_STONITH_CALLID, &call_id);
}
CRM_CHECK(call_id > 0, crm_log_xml_err(msg, "Bad result"));
blob = g_hash_table_lookup(private->stonith_op_callback_table, GINT_TO_POINTER(call_id));
if (blob != NULL) {
local_blob = *blob;
blob = NULL;
stonith_api_del_callback(stonith, call_id, FALSE);
} else {
crm_trace("No callback found for call %d", call_id);
local_blob.callback = NULL;
}
if (local_blob.callback != NULL && (rc == pcmk_ok || local_blob.only_success == FALSE)) {
crm_trace("Invoking callback %s for call %d", crm_str(local_blob.id), call_id);
invoke_callback(stonith, call_id, rc, local_blob.user_data, local_blob.callback);
} else if (private->op_callback == NULL && rc != pcmk_ok) {
crm_warn("STONITH command failed: %s", pcmk_strerror(rc));
crm_log_xml_debug(msg, "Failed STONITH Update");
}
if (private->op_callback != NULL) {
crm_trace("Invoking global callback for call %d", call_id);
invoke_callback(stonith, call_id, rc, NULL, private->op_callback);
}
crm_trace("OP callback activated.");
}
/*
<notify t="st_notify" subt="st_device_register" st_op="st_device_register" st_rc="0" >
<st_calldata >
<stonith_command t="stonith-ng" st_async_id="088fb640-431a-48b9-b2fc-c4ff78d0a2d9" st_op="st_device_register" st_callid="2" st_callopt="4096" st_timeout="0" st_clientid="088fb640-431a-48b9-b2fc-c4ff78d0a2d9" st_clientname="stonith-test" >
<st_calldata >
<st_device_id id="test-id" origin="create_device_registration_xml" agent="fence_virsh" namespace="stonith-ng" >
<attributes ipaddr="localhost" pcmk-portmal="some-host=pcmk-1 pcmk-3=3,4" login="root" identity_file="/root/.ssh/id_dsa" />
</st_device_id>
</st_calldata>
</stonith_command>
</st_calldata>
</notify>
<notify t="st_notify" subt="st_notify_fence" st_op="st_notify_fence" st_rc="0" >
<st_calldata >
<st_notify_fence st_rc="0" st_target="some-host" st_op="st_fence" st_delegate="test-id" st_origin="61dd7759-e229-4be7-b1f8-ef49dd14d9f0" />
</st_calldata>
</notify>
*/
static stonith_event_t *
xml_to_event(xmlNode *msg)
{
stonith_event_t *event = calloc(1, sizeof(stonith_event_t));
const char *ntype = crm_element_value(msg, F_SUBTYPE);
char *data_addr = g_strdup_printf("//%s", ntype);
xmlNode *data = get_xpath_object(data_addr, msg, LOG_DEBUG);
crm_log_xml_trace(msg, "stonith_notify");
crm_element_value_int(msg, F_STONITH_RC, &(event->result));
if(safe_str_eq(ntype, T_STONITH_NOTIFY_FENCE)) {
event->operation = crm_element_value_copy(msg, F_STONITH_OPERATION);
if(data) {
event->origin = crm_element_value_copy(data, F_STONITH_ORIGIN);
event->action = crm_element_value_copy(data, F_STONITH_ACTION);
event->target = crm_element_value_copy(data, F_STONITH_TARGET);
event->executioner = crm_element_value_copy(data, F_STONITH_DELEGATE);
- event->id = crm_element_value_copy(data, F_STONITH_REMOTE);
+ event->id = crm_element_value_copy(data, F_STONITH_REMOTE_OP_ID);
event->client_origin = crm_element_value_copy(data, F_STONITH_CLIENTNAME);
} else {
crm_err("No data for %s event", ntype);
crm_log_xml_notice(msg, "BadEvent");
}
}
g_free(data_addr);
return event;
}
static void
event_free(stonith_event_t *event)
{
free(event->id);
free(event->type);
free(event->message);
free(event->operation);
free(event->origin);
free(event->action);
free(event->target);
free(event->executioner);
free(event->device);
free(event->client_origin);
free(event);
}
static void
stonith_send_notification(gpointer data, gpointer user_data)
{
struct notify_blob_s *blob = user_data;
stonith_notify_client_t *entry = data;
stonith_event_t *st_event = NULL;
const char *event = NULL;
if (blob->xml == NULL) {
crm_warn("Skipping callback - NULL message");
return;
}
event = crm_element_value(blob->xml, F_SUBTYPE);
if (entry == NULL) {
crm_warn("Skipping callback - NULL callback client");
return;
} else if (entry->notify == NULL) {
crm_warn("Skipping callback - NULL callback");
return;
} else if (safe_str_neq(entry->event, event)) {
crm_trace("Skipping callback - event mismatch %p/%s vs. %s", entry, entry->event, event);
return;
}
st_event = xml_to_event(blob->xml);
crm_trace("Invoking callback for %p/%s event...", entry, event);
entry->notify(blob->stonith, st_event);
crm_trace("Callback invoked...");
event_free(st_event);
}
int
stonith_send_command(stonith_t * stonith, const char *op, xmlNode * data, xmlNode ** output_data,
int call_options, int timeout)
{
int rc = 0;
int reply_id = -1;
enum crm_ipc_flags ipc_flags = crm_ipc_client_none;
xmlNode *op_msg = NULL;
xmlNode *op_reply = NULL;
stonith_private_t *native = stonith->private;
if (stonith->state == stonith_disconnected) {
return -ENOTCONN;
}
if (output_data != NULL) {
*output_data = NULL;
}
if (op == NULL) {
crm_err("No operation specified");
return -EINVAL;
}
if (call_options & st_opt_sync_call) {
ipc_flags |= crm_ipc_client_response;
}
stonith->call_id++;
/* prevent call_id from being negative (or zero) and conflicting
* with the stonith_errors enum
* use 2 because we use it as (stonith->call_id - 1) below
*/
if (stonith->call_id < 1) {
stonith->call_id = 1;
}
CRM_CHECK(native->token != NULL,;);
op_msg = stonith_create_op(stonith->call_id, native->token, op, data, call_options);
if (op_msg == NULL) {
return -EINVAL;
}
crm_xml_add_int(op_msg, F_STONITH_TIMEOUT, timeout);
crm_trace("Sending %s message to STONITH service, Timeout: %ds", op, timeout);
rc = crm_ipc_send(native->ipc, op_msg, ipc_flags, 1000*(timeout + 60), &op_reply);
free_xml(op_msg);
if(rc < 0) {
crm_perror(LOG_ERR, "Couldn't perform %s operation (timeout=%ds): %d", op, timeout, rc);
rc = -ECOMM;
goto done;
}
crm_log_xml_trace(op_reply, "Reply");
if (!(call_options & st_opt_sync_call)) {
crm_trace("Async call %d, returning", stonith->call_id);
CRM_CHECK(stonith->call_id != 0, return -EPROTO);
free_xml(op_reply);
return stonith->call_id;
}
rc = pcmk_ok;
crm_element_value_int(op_reply, F_STONITH_CALLID, &reply_id);
if (reply_id == stonith->call_id) {
crm_trace("Syncronous reply %d received", reply_id);
if (crm_element_value_int(op_reply, F_STONITH_RC, &rc) != 0) {
rc = -ENOMSG;
}
if ((call_options & st_opt_discard_reply) || output_data == NULL) {
crm_trace("Discarding reply");
} else {
*output_data = op_reply;
op_reply = NULL; /* Prevent subsequent free */
}
} else if (reply_id <= 0) {
crm_err("Recieved bad reply: No id set");
crm_log_xml_err(op_reply, "Bad reply");
free_xml(op_reply);
rc = -ENOMSG;
} else {
crm_err("Recieved bad reply: %d (wanted %d)", reply_id, stonith->call_id);
crm_log_xml_err(op_reply, "Old reply");
free_xml(op_reply);
rc = -ENOMSG;
}
done:
if (crm_ipc_connected(native->ipc) == FALSE) {
crm_err("STONITH disconnected");
stonith->state = stonith_disconnected;
}
free_xml(op_reply);
return rc;
}
/* Not used with mainloop */
bool
stonith_dispatch(stonith_t * st)
{
gboolean stay_connected = TRUE;
stonith_private_t *private = NULL;
CRM_ASSERT(st != NULL);
private = st->private;
while(crm_ipc_ready(private->ipc)) {
if(crm_ipc_read(private->ipc) > 0) {
const char *msg = crm_ipc_buffer(private->ipc);
stonith_dispatch_internal(msg, strlen(msg), st);
}
if(crm_ipc_connected(private->ipc) == FALSE) {
crm_err("Connection closed");
stay_connected = FALSE;
}
}
return stay_connected;
}
int
stonith_dispatch_internal(const char *buffer, ssize_t length, gpointer userdata)
{
const char *type = NULL;
struct notify_blob_s blob;
stonith_t * st = userdata;
stonith_private_t *private = NULL;
CRM_ASSERT(st != NULL);
private = st->private;
blob.stonith = st;
blob.xml = string2xml(buffer);
if (blob.xml == NULL) {
crm_warn("Received a NULL msg from STONITH service: %s.", buffer);
return 0;
}
/* do callbacks */
type = crm_element_value(blob.xml, F_TYPE);
crm_trace("Activating %s callbacks...", type);
if (safe_str_eq(type, T_STONITH_NG)) {
stonith_perform_callback(st, blob.xml, 0, 0);
} else if (safe_str_eq(type, T_STONITH_NOTIFY)) {
g_list_foreach(private->notify_list, stonith_send_notification, &blob);
} else if (safe_str_eq(type, T_STONITH_TIMEOUT_VALUE)) {
int call_id = 0;
int timeout = 0;
crm_element_value_int(blob.xml, F_STONITH_TIMEOUT, &timeout);
crm_element_value_int(blob.xml, F_STONITH_CALLID, &call_id);
update_callback_timeout(call_id, timeout, st);
} else {
crm_err("Unknown message type: %s", type);
crm_log_xml_warn(blob.xml, "BadReply");
}
free_xml(blob.xml);
return 1;
}
static int
stonith_api_free(stonith_t * stonith)
{
int rc = pcmk_ok;
if (stonith->state != stonith_disconnected) {
rc = stonith->cmds->disconnect(stonith);
}
if (stonith->state == stonith_disconnected) {
stonith_private_t *private = stonith->private;
g_hash_table_destroy(private->stonith_op_callback_table);
free(private->token);
free(stonith->private);
free(stonith->cmds);
free(stonith);
}
return rc;
}
void
stonith_api_delete(stonith_t * stonith)
{
stonith_private_t *private = stonith->private;
GList *list = private->notify_list;
while (list != NULL) {
stonith_notify_client_t *client = g_list_nth_data(list, 0);
list = g_list_remove(list, client);
free(client);
}
stonith->cmds->free(stonith);
stonith = NULL;
}
stonith_t *
stonith_api_new(void)
{
stonith_t *new_stonith = NULL;
stonith_private_t *private = NULL;
new_stonith = calloc(1, sizeof(stonith_t));
private = calloc(1, sizeof(stonith_private_t));
new_stonith->private = private;
private->stonith_op_callback_table = g_hash_table_new_full(g_direct_hash, g_direct_equal,
NULL, stonith_destroy_op_callback);
private->notify_list = NULL;
new_stonith->call_id = 1;
new_stonith->state = stonith_disconnected;
new_stonith->cmds = calloc(1, sizeof(stonith_api_operations_t));
/* *INDENT-OFF* */
new_stonith->cmds->free = stonith_api_free;
new_stonith->cmds->connect = stonith_api_signon;
new_stonith->cmds->disconnect = stonith_api_signoff;
new_stonith->cmds->list = stonith_api_list;
new_stonith->cmds->monitor = stonith_api_monitor;
new_stonith->cmds->status = stonith_api_status;
new_stonith->cmds->fence = stonith_api_fence;
new_stonith->cmds->confirm = stonith_api_confirm;
new_stonith->cmds->history = stonith_api_history;
new_stonith->cmds->list_agents = stonith_api_device_list;
new_stonith->cmds->metadata = stonith_api_device_metadata;
new_stonith->cmds->query = stonith_api_query;
new_stonith->cmds->remove_device = stonith_api_remove_device;
new_stonith->cmds->register_device = stonith_api_register_device;
new_stonith->cmds->remove_level = stonith_api_remove_level;
new_stonith->cmds->register_level = stonith_api_register_level;
new_stonith->cmds->remove_callback = stonith_api_del_callback;
new_stonith->cmds->register_callback = stonith_api_add_callback;
new_stonith->cmds->remove_notification = stonith_api_del_notification;
new_stonith->cmds->register_notification = stonith_api_add_notification;
/* *INDENT-ON* */
return new_stonith;
}
stonith_key_value_t *
stonith_key_value_add(stonith_key_value_t * head, const char *key, const char *value)
{
stonith_key_value_t *p, *end;
p = calloc(1, sizeof(stonith_key_value_t));
if (key) {
p->key = strdup(key);
}
if (value) {
p->value = strdup(value);
}
end = head;
while (end && end->next) {
end = end->next;
}
if (end) {
end->next = p;
} else {
head = p;
}
return head;
}
void
stonith_key_value_freeall(stonith_key_value_t * head, int keys, int values)
{
stonith_key_value_t *p;
while (head) {
p = head->next;
if (keys) {
free(head->key);
}
if (values) {
free(head->value);
}
free(head);
head = p;
}
}
int
stonith_api_kick(int nodeid, const char *uname, int timeout, bool off)
{
char *name = NULL;
const char *action = "reboot";
int rc = -EPROTO;
stonith_t *st = NULL;
enum stonith_call_options opts = st_opt_sync_call | st_opt_allow_suicide;
st = stonith_api_new();
if (st) {
rc = st->cmds->connect(st, "stonith-api", NULL);
}
if (uname != NULL) {
name = strdup(uname);
} else if (nodeid > 0) {
opts |= st_opt_cs_nodeid;
name = crm_itoa(nodeid);
}
if (off) {
action = "off";
}
if (rc == pcmk_ok) {
rc = st->cmds->fence(st, opts, name, action, timeout, 0);
}
if (st) {
st->cmds->disconnect(st);
stonith_api_delete(st);
}
free(name);
return rc;
}
time_t
stonith_api_time(int nodeid, const char *uname, bool in_progress)
{
int rc = 0;
char *name = NULL;
time_t when = 0;
time_t progress = 0;
stonith_t *st = NULL;
stonith_history_t *history, *hp = NULL;
enum stonith_call_options opts = st_opt_sync_call;
st = stonith_api_new();
if (st) {
rc = st->cmds->connect(st, "stonith-api", NULL);
}
if (uname != NULL) {
name = strdup(uname);
} else if (nodeid > 0) {
opts |= st_opt_cs_nodeid;
name = crm_itoa(nodeid);
}
if (st && rc == pcmk_ok) {
st->cmds->history(st, st_opt_sync_call | st_opt_cs_nodeid, name, &history, 120);
for (hp = history; hp; hp = hp->next) {
if (in_progress) {
if (hp->state != st_done && hp->state != st_failed) {
progress = time(NULL);
}
} else if (hp->state == st_done) {
when = hp->completed;
}
}
}
if (progress) {
when = progress;
}
if (st) {
st->cmds->disconnect(st);
stonith_api_delete(st);
}
free(name);
return when;
}