diff --git a/fencing/commands.c b/fencing/commands.c
index 4abce6b60e..13d581c922 100644
--- a/fencing/commands.c
+++ b/fencing/commands.c
@@ -1,1211 +1,1201 @@
/*
* Copyright (C) 2009 Andrew Beekhof <andrew@beekhof.net>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <crm_internal.h>
#include <sys/param.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include <unistd.h>
#include <sys/utsname.h>
#include <stdlib.h>
#include <errno.h>
#include <fcntl.h>
#include <ctype.h>
#include <crm/crm.h>
#include <crm/msg_xml.h>
#include <crm/common/ipc.h>
#include <crm/common/cluster.h>
#include <crm/common/mainloop.h>
#include <crm/stonith-ng.h>
#include <crm/stonith-ng-internal.h>
#include <crm/common/xml.h>
#include <crm/common/msg.h>
#include <internal.h>
#include <clplumbing/proctrack.h>
GHashTable *device_list = NULL;
GHashTable *topology = NULL;
static int active_children = 0;
static gboolean stonith_device_dispatch(gpointer user_data);
-static void exec_child_done(ProcTrack* proc, int status, int signo, int rc, int waslogged);
-static void exec_child_new(ProcTrack* p) { active_children++; }
-static const char *exec_child_name(ProcTrack* p) {
- async_command_t *cmd = proctrack_data(p);
- return cmd->client?cmd->client:cmd->remote;
-}
-
-static ProcTrack_ops StonithdProcessTrackOps = {
- exec_child_done,
- exec_child_new,
- exec_child_name,
-};
+static void st_child_done(GPid pid, gint status, gpointer user_data);
static void free_async_command(async_command_t *cmd)
{
crm_free(cmd->device);
crm_free(cmd->action);
crm_free(cmd->victim);
crm_free(cmd->remote);
crm_free(cmd->client);
crm_free(cmd->origin);
crm_free(cmd->op);
crm_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");
crm_malloc0(cmd, 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->timeout));
cmd->timeout *= 1000;
cmd->origin = crm_element_value_copy(msg, F_ORIG);
cmd->remote = crm_element_value_copy(msg, F_STONITH_REMOTE);
cmd->client = crm_element_value_copy(msg, F_STONITH_CLIENTID);
cmd->op = crm_element_value_copy(msg, F_STONITH_OPERATION);
cmd->action = crm_strdup(action);
cmd->victim = crm_element_value_copy(op, F_STONITH_TARGET);
- cmd->pt_ops = &StonithdProcessTrackOps;
+ cmd->done = st_child_done;
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"));
return cmd;
}
static int stonith_manual_ack(xmlNode *msg, remote_fencing_op_t *op)
{
- struct _ProcTrack p;
async_command_t *cmd = create_async_command(msg);
xmlNode *dev = get_xpath_object("//@"F_STONITH_TARGET, msg, LOG_ERR);
if(cmd == NULL) {
return st_err_missing;
}
cmd->device = crm_strdup("manual_ack");
cmd->remote = crm_strdup(op->id);
crm_notice("Injecting manual confirmation that %s is safely off/down",
crm_element_value(dev, F_STONITH_TARGET));
- memset(&p, 0, sizeof(struct _ProcTrack));
- p.privatedata = cmd;
-
- exec_child_done(&p, 0, 0, 0, FALSE);
+ st_child_done(0, 0, cmd);
return stonith_ok;
}
static gboolean stonith_device_execute(stonith_device_t *device)
{
int rc = 0;
int exec_rc = 0;
async_command_t *cmd = 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;
}
cmd->device = crm_strdup(device->id);
exec_rc = run_stonith_agent(device->agent, cmd->action, cmd->victim,
device->params, device->aliases, &rc, NULL, cmd);
if(exec_rc > 0) {
crm_debug("Operation %s%s%s on %s is active with pid: %d",
cmd->action, cmd->victim?" for node ":"", cmd->victim?cmd->victim:"",
device->id, exec_rc);
device->active_pid = exec_rc;
} else {
- struct _ProcTrack p;
- memset(&p, 0, sizeof(struct _ProcTrack));
- p.privatedata = cmd;
-
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);
- exec_child_done(&p, 0, 0, rc<0?rc:exec_rc, 0);
+ st_child_done(0, rc<0?rc:exec_rc, 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);
crm_trace("Scheduling %s on %s", cmd->action, device->id);
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) {
- struct _ProcTrack p;
async_command_t *cmd = gIter->data;
-
- memset(&p, 0, sizeof(struct _ProcTrack));
- p.privatedata = cmd;
crm_warn("Removal of device '%s' purged operation %s", device->id, cmd->action);
- exec_child_done(&p, 0, 0, st_err_unknown_device, 0);
+ st_child_done(0, st_err_unknown_device, cmd);
free_async_command(cmd);
}
g_list_free(device->pending_ops);
slist_basic_destroy(device->targets);
crm_free(device->namespace);
crm_free(device->agent);
crm_free(device->id);
crm_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) {
crm_free(name);
crm_malloc0(name, 1 + lpc - last);
strncpy(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;
crm_malloc0(value, 1 + lpc - last);
strncpy(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, crm_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);
}
crm_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) {
crm_malloc0(entry, 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;
}
crm_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;
crm_malloc0(line, 2 + lpc - last);
snprintf(line, 1 + lpc - last, "%s", hosts+last);
parse_host_line(line, &output);
crm_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;
crm_malloc0(device, 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;
}
int stonith_device_register(xmlNode *msg)
{
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));
g_hash_table_replace(device_list, device->id, device);
crm_info("Added '%s' to the device list (%d active devices)", device->id, g_hash_table_size(device_list));
return stonith_ok;
}
static int stonith_device_remove(xmlNode *msg)
{
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));
}
return stonith_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) {
slist_basic_destroy(tp->levels[lpc]);
}
}
crm_free(tp->node);
crm_free(tp);
}
int stonith_level_register(xmlNode *msg)
{
int id = 0;
int rc = stonith_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(id <= 0 || id >= ST_LEVEL_MAX) {
return st_err_invalid_level;
}
if(tp == NULL) {
crm_malloc0(tp, sizeof(stonith_topology_t));
tp->node = crm_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], crm_strdup(device));
}
crm_info("Node %s has %d active fencing levels", node, count_active_levels(tp));
return rc;
}
int stonith_level_remove(xmlNode *msg)
{
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(tp == NULL) {
crm_info("Node %s not found (%d active entries)",
node, g_hash_table_size(topology));
return stonith_ok;
}
crm_element_value_int(level, XML_ATTR_ID, &id);
if(id < 0 || id >= ST_LEVEL_MAX) {
return st_err_invalid_level;
}
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) {
slist_basic_destroy(tp->levels[id]);
tp->levels[id] = NULL;
crm_info("Removed entry '%d' from %s's topology (%d active entries remaining)",
id, node, count_active_levels(tp));
}
return stonith_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 = stonith_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 st_err_internal;
}
schedule_stonith_command(cmd, device);
rc = stonith_pending;
} else {
crm_notice("Device %s not found", id?id:"<none>");
rc = st_err_unknown_device;
}
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 = 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 {
check_type = "dynamic-list";
}
}
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(safe_str_eq(check_type, "dynamic-list")) {
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) {
char *output = NULL;
int rc = stonith_ok;
int exec_rc = stonith_ok;
/* Check for the target's presence in the output of the 'list' command */
slist_basic_destroy(dev->targets);
dev->targets = NULL;
exec_rc = run_stonith_agent(dev->agent, "list", NULL, dev->params, NULL, &rc, &output, NULL);
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, crm_strdup(STONITH_ATTR_HOSTCHECK), crm_strdup("status"));
} else {
crm_info("Refreshing port list for %s", dev->id);
dev->targets = parse_host_list(output);
dev->targets_age = now;
}
crm_free(output);
}
if(string_in_list(dev->targets, alias)) {
can = TRUE;
}
} else if(safe_str_eq(check_type, "status")) {
int rc = 0;
int exec_rc = 0;
/* 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
*/
exec_rc = run_stonith_agent(
dev->agent, "status", host, dev->params, dev->aliases, &rc, NULL, 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;
xmlNode *dev = get_xpath_object("//@"F_STONITH_TARGET, 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 stonith_ok;
}
}
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;
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(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",
cmd->action, pid, cmd->id, cmd->client, cmd->victim, cmd->device, rc,
next?". Trying: ":"", next?next:"");
} else {
do_crm_log(rc==0?LOG_DEBUG:LOG_NOTICE,
"Operation '%s' [%d] for device '%s' returned: %d%s%s",
cmd->action, pid, cmd->device, rc, next?". Trying: ":"", next?next:"");
}
if(output) {
/* Logging the whole string confuses syslog when the string is xml */
char *local_copy = crm_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_ERR, "%s: %s",
cmd->device, local_copy+last);
last = lpc+1;
}
}
crm_debug("%s: %s (total %d bytes)", cmd->device, local_copy+last, more);
crm_free(local_copy);
}
}
#define READ_MAX 500
-static void
-exec_child_done(ProcTrack* proc, int status, int signum, int rc, int waslogged)
+static void st_child_done(GPid pid, gint status, gpointer user_data)
{
+ int rc = st_err_generic;
+
int len = 0;
int more = 0;
gboolean bcast = FALSE;
char *output = NULL;
xmlNode *data = NULL;
xmlNode *reply = NULL;
- int pid = proctrack_pid(proc);
stonith_device_t *device = NULL;
- async_command_t *cmd = proctrack_data(proc);
+ async_command_t *cmd = user_data;
CRM_CHECK(cmd != NULL, return);
+
+ g_source_remove(cmd->timer_sigterm);
+ g_source_remove(cmd->timer_sigkill);
+
+ if(WIFSIGNALED(status)) {
+ int signo = WTERMSIG(status);
+
+ if(signo) {
+ if(signo == SIGTERM || signo == SIGKILL) {
+ rc = st_err_timeout;
+ } else {
+ rc = st_err_signal;
+ }
+ }
+ crm_notice("Child process %s performing action '%s' with '%s' terminated with signal %d",
+ pid, cmd->action, cmd->device, signo);
+
+ } else if(WIFEXITED(status)) {
+ rc = WEXITSTATUS(status);
+ crm_debug("Child process %s performing action '%s' with '%s' exited with rc %d",
+ pid, cmd->action, cmd->device, rc);
+ }
+
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);
}
- if( signum ) {
- rc = st_err_signal;
- if( proctrack_timedout(proc) ) {
- crm_warn("Child '%d' performing action '%s' with '%s' timed out",
- pid, cmd->action, cmd->device);
- rc = st_err_timeout;
- }
- }
-
do {
char buffer[READ_MAX];
errno = 0;
if(cmd->stdout > 0) {
memset(&buffer, 0, READ_MAX);
more = read(cmd->stdout, buffer, READ_MAX-1);
crm_trace("Got %d more bytes: %s", more, buffer);
}
if(more > 0) {
crm_realloc(output, len + more + 1);
sprintf(output+len, "%s", buffer);
len += more;
}
} while (more == (READ_MAX-1) || (more < 0 && errno == EINTR));
if(cmd->stdout) {
close(cmd->stdout);
cmd->stdout = 0;
}
crm_trace("Operation on %s completed with rc=%d (%d remaining)",
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);
goto done;
}
if(rc > 0) {
rc = st_err_generic;
}
reply = stonith_construct_async_reply(cmd, output, data, rc);
if(safe_str_eq(cmd->action, "metadata")) {
/* Too verbose to log */
crm_free(output); output = NULL;
} else if(crm_str_eq(cmd->action, "reboot", TRUE)
|| crm_str_eq(cmd->action, "poweroff", TRUE)
|| crm_str_eq(cmd->action, "poweron", TRUE)
|| crm_str_eq(cmd->action, "off", TRUE)
|| crm_str_eq(cmd->action, "on", TRUE)) {
/* TODO: Invert this logic */
bcast = TRUE;
}
log_operation(cmd, rc, pid, NULL, output);
crm_log_xml_trace(reply, "Reply");
if(bcast && !stand_alone) {
/* Send reply as T_STONITH_NOTIFY so everyone does notifications
* Potentially limit to unsucessful operations to the originator?
*/
crm_xml_add(reply, F_STONITH_OPERATION, T_STONITH_NOTIFY);
send_cluster_message(NULL, crm_msg_stonith_ng, reply, FALSE);
} else if(cmd->origin) {
send_cluster_message(cmd->origin, crm_msg_stonith_ng, reply, FALSE);
} else {
do_local_reply(reply, cmd->client, cmd->options & st_opt_sync_call, FALSE);
}
free_async_command(cmd);
done:
- reset_proctrack_data(proc);
crm_free(output);
free_xml(reply);
free_xml(data);
}
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;
struct device_search_s search;
stonith_device_t *device = NULL;
async_command_t *cmd = create_async_command(msg);
xmlNode *dev = get_xpath_object("//@"F_STONITH_TARGET, msg, LOG_ERR);
crm_log_xml_trace(msg, "Exec");
if(cmd == NULL) {
return st_err_internal;
}
device_id = crm_element_value(dev, F_STONITH_DEVICE);
if(device_id) {
device = g_hash_table_lookup(device_list, device_id);
} else {
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;
/* TODO: Shouldn't we remove the element here? */
if(g_list_length(search.capable) > 1) {
cmd->device_list = search.capable;
}
}
}
if(device) {
cmd->device = device->id;
schedule_stonith_command(cmd, device);
return stonith_pending;
}
free_async_command(cmd);
return st_err_none_available;
}
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_REMOTE,
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;
}
xmlNode *stonith_construct_async_reply(async_command_t *cmd, 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_REMOTE, cmd->remote);
crm_xml_add(reply, F_STONITH_CLIENTID, cmd->client);
crm_xml_add(reply, F_STONITH_TARGET, cmd->victim);
crm_xml_add(reply, F_STONITH_ACTION, cmd->op);
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;
}
void
stonith_command(stonith_client_t *client, xmlNode *request, const char *remote)
{
int call_options = 0;
int rc = st_err_generic;
gboolean is_reply = FALSE;
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(get_xpath_object("//"T_STONITH_REPLY, request, LOG_DEBUG_3)) {
is_reply = TRUE;
}
crm_debug("Processing %s%s from %s (%16x)", op, is_reply?" reply":"",
client?client->name:remote, call_options);
if(crm_str_eq(op, CRM_OP_REGISTER, TRUE)) {
xmlNode *reply = create_xml_node(NULL, "reply");
crm_xml_add(reply, F_STONITH_OPERATION, CRM_OP_REGISTER);
crm_xml_add(reply, F_STONITH_CLIENTID, client->id);
crm_ipcs_send(client->channel, reply, FALSE);
free_xml(reply);
return;
} else if(crm_str_eq(op, STONITH_OP_EXEC, TRUE)) {
rc = stonith_device_action(request, &output);
} else if(is_reply && crm_str_eq(op, STONITH_OP_QUERY, TRUE)) {
process_remote_stonith_query(request);
return;
} else if(crm_str_eq(op, STONITH_OP_QUERY, TRUE)) {
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;
}
} else if(is_reply && crm_str_eq(op, T_STONITH_NOTIFY, TRUE)) {
process_remote_stonith_exec(request);
return;
} else if(crm_str_eq(op, T_STONITH_NOTIFY, TRUE)) {
const char *flag_name = NULL;
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);
}
crm_ipcs_send_ack(client->channel, "ack", __FUNCTION__, __LINE__);
return;
/* } else if(is_reply && crm_str_eq(op, STONITH_OP_FENCE, TRUE)) { */
/* process_remote_stonith_exec(request); */
/* return; */
} else if(is_reply == FALSE && crm_str_eq(op, STONITH_OP_FENCE, TRUE)) {
if(remote || 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 if(call_options & st_opt_local_first) {
rc = stonith_fence(request);
if(rc < 0) {
initiate_remote_stonith_op(client, request, FALSE);
if((call_options & st_opt_sync_call) == 0) {
crm_ipcs_send_ack(client->channel, "ack", __FUNCTION__, __LINE__);
}
return;
}
} else {
initiate_remote_stonith_op(client, request, FALSE);
if((call_options & st_opt_sync_call) == 0) {
crm_ipcs_send_ack(client->channel, "ack", __FUNCTION__, __LINE__);
}
return;
}
} 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, CRM_OP_REGISTER, TRUE)) {
return;
} else if(crm_str_eq(op, STONITH_OP_DEVICE_ADD, TRUE)) {
rc = stonith_device_register(request);
do_stonith_notify(call_options, op, rc, request, NULL);
} else if(crm_str_eq(op, STONITH_OP_DEVICE_DEL, TRUE)) {
rc = stonith_device_remove(request);
do_stonith_notify(call_options, op, rc, request, NULL);
} else if(crm_str_eq(op, STONITH_OP_LEVEL_ADD, TRUE)) {
rc = stonith_level_register(request);
do_stonith_notify(call_options, op, rc, request, NULL);
} else if(crm_str_eq(op, STONITH_OP_LEVEL_DEL, TRUE)) {
rc = stonith_level_remove(request);
do_stonith_notify(call_options, op, rc, request, NULL);
} 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%s from %s", op, is_reply?" reply":"",
client?client->name:remote);
crm_log_xml_warn(request, "UnknownOp");
}
do_crm_log(rc>0?LOG_DEBUG:LOG_INFO,"Processed %s%s from %s: rc=%d", op, is_reply?" reply":"",
client?client->name:remote, rc);
if(is_reply || rc == stonith_pending) {
/* Nothing (yet) */
} else if(remote) {
reply = stonith_construct_reply(request, output, data, rc);
send_cluster_message(remote, crm_msg_stonith_ng, reply, FALSE);
free_xml(reply);
} else if(rc <= stonith_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);
free_xml(reply);
}
crm_free(output);
free_xml(data);
}
diff --git a/fencing/main.c b/fencing/main.c
index 0d47a24e06..18c3575b2e 100644
--- a/fencing/main.c
+++ b/fencing/main.c
@@ -1,829 +1,826 @@
/*
* 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/common/cluster.h>
#include <crm/stonith-ng.h>
#include <crm/stonith-ng-internal.h>
#include <crm/common/xml.h>
#include <crm/common/msg.h>
#include <crm/common/mainloop.h>
#include <crm/cib.h>
#include <internal.h>
#include <standalone_config.h>
char *channel1 = NULL;
char *channel2 = NULL;
char *stonith_our_uname = NULL;
GMainLoop *mainloop = NULL;
GHashTable *client_list = NULL;
gboolean stand_alone = FALSE;
gboolean stonith_shutdown_flag = FALSE;
#if SUPPORT_HEARTBEAT
ll_cluster_t *hb_conn = NULL;
#endif
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
crm_malloc0(new_client, sizeof(stonith_client_t));
new_client->channel = c;
new_client->channel_name = crm_strdup("ipc");
CRM_CHECK(new_client->id == NULL, crm_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);
}
/* Exit code means? */
static int32_t
st_ipc_dispatch(qb_ipcs_connection_t *c, void *data, size_t size)
{
xmlNode *request = NULL;
stonith_client_t *client = (stonith_client_t*)qb_ipcs_context_get(c);
CRM_CHECK(client != NULL, crm_err("Invalid client"); return FALSE);
CRM_CHECK(client->id != NULL, crm_err("Invalid client: %p", client); return FALSE);
request = crm_ipcs_recv(c, data, size);
if (request == NULL) {
return 0;
}
if(client->name == NULL) {
const char *value = crm_element_value(request, F_STONITH_CLIENTNAME);
if(value == NULL) {
client->name = crm_itoa(crm_ipcs_client_pid(c));
} else {
client->name = crm_strdup(value);
}
}
crm_xml_add(request, F_STONITH_CLIENTID, client->id);
crm_xml_add(request, F_STONITH_CLIENTNAME, client->name);
crm_log_xml_trace(request, "Client[inbound]");
stonith_command(client, request, NULL);
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);
crm_free(client->name);
crm_free(client->id);
crm_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);
crm_log_xml_trace(msg, "Peer[inbound]");
stonith_command(NULL, msg, remote);
}
static void
stonith_peer_hb_callback(HA_Message * msg, void* private_data)
{
#if SUPPORT_HEARTBEAT
xmlNode *xml = convert_ha_message(NULL, msg, __FUNCTION__);
stonith_peer_callback(xml, private_data);
free_xml(xml);
#endif
}
#if SUPPORT_COROSYNC
static gboolean stonith_peer_ais_callback(
AIS_Message *wrapper, char *data, int sender)
{
xmlNode *xml = NULL;
if(wrapper->header.id == crm_class_cluster) {
xml = string2xml(data);
if(xml == NULL) {
goto bail;
}
crm_xml_add(xml, F_ORIG, wrapper->sender.uname);
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");
exit(1);
}
#endif
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.");
}
crm_info("Exiting...");
if (mainloop != NULL && g_main_is_running(mainloop)) {
g_main_quit(mainloop);
} else {
exit(LSB_EXIT_OK);
}
}
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;
enum stonith_errors local_rc = stonith_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 {
crm_trace("Sending %ssync response to %s %s",
sync_reply?"":"an a-",
client_obj->name,
from_peer?"(originator of delegated request)":"");
local_rc = crm_ipcs_send(client_obj->channel, notify_src, !sync_reply);
}
if(local_rc < stonith_ok && client_obj != NULL) {
crm_warn("%sSync reply to %s failed: %s",
sync_reply?"":"A-",
client_obj?client_obj->name:"<unknown>", stonith_error2string(local_rc));
}
}
long long get_stonith_flag(const char *name)
{
if(safe_str_eq(name, STONITH_OP_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 == NULL) {
crm_trace("Skipping NULL client");
return;
} else 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)) {
crm_trace("Sending %s-notification to client %s/%s", type, client->name, client->id);
if(crm_ipcs_send(client->channel, update_msg, ipcs_send_event|ipcs_send_error) <= 0) {
crm_warn("%s-Notification of client %s/%s failed",
type, client->name, client->id);
}
}
}
void
do_stonith_notify(
int options, const char *type, enum stonith_errors result, xmlNode *data,
const char *remote)
{
/* 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;
crm_malloc0(line, 2 + lpc - last);
snprintf(line, 1 + lpc - last, "%s", devices+last);
output = stonith_key_value_add(output, NULL, line);
crm_free(line);
last = lpc + 1;
}
}
return output;
}
static void topology_remove_helper(const char *node, int level)
{
xmlNode *data = create_xml_node(NULL, F_STONITH_LEVEL);
crm_xml_add(data, "origin", __FUNCTION__);
crm_xml_add_int(data, XML_ATTR_ID, level);
crm_xml_add(data, F_STONITH_TARGET, node);
stonith_level_remove(data);
free_xml(data);
}
static void topology_register_helper(const char *node, int level, stonith_key_value_t *device_list)
{
xmlNode *data = create_level_registration_xml(node, level, device_list);
stonith_level_register(data);
free_xml(data);
}
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));
exit(0);
}
static void
stonith_cleanup(void)
{
crm_peer_destroy();
g_hash_table_destroy(client_list);
crm_free(stonith_our_uname);
#if HAVE_LIBXML2
crm_xml_cleanup();
#endif
crm_free(channel1);
}
/* *INDENT-OFF* */
static struct crm_option long_options[] = {
{"stand-alone", 0, 0, 's'},
{"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)(enum cib_errors) = NULL;
int rc, retries = 0;
cib_t *cib = NULL;
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, "cib_error2string");
}
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 == cib_connection && ++retries < 5);
if (rc != cib_ok) {
crm_err("Could not connect to the CIB service: %s", (*cib_err_fn)(rc));
} else if (cib_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
};
int
main(int argc, char ** argv)
{
int flag;
int rc = 0;
int lpc = 0;
int argerr = 0;
int option_index = 0;
qb_ipcs_service_t *ipcs = NULL;
const char *actions[] = { "reboot", "poweroff", "list", "monitor", "status" };
crm_log_init("stonith-ng", LOG_INFO, TRUE, FALSE, argc, argv);
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();
break;
case 's':
stand_alone = TRUE;
break;
case '$':
case '?':
crm_help(flag, LSB_EXIT_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.</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('?', LSB_EXIT_GENERIC);
}
mainloop_add_signal(SIGTERM, stonith_shutdown);
-
- /* EnableProcLogging(); */
- set_sigchld_proctrack(G_PRIORITY_HIGH,DEFAULT_MAXDISPATCHTIME);
crm_peer_init();
client_list = g_hash_table_new(crm_str_hash, g_str_equal);
if(stand_alone == FALSE) {
void *dispatch = stonith_peer_hb_callback;
void *destroy = stonith_peer_hb_destroy;
if(is_openais_cluster()) {
#if SUPPORT_COROSYNC
destroy = stonith_peer_ais_destroy;
dispatch = stonith_peer_ais_callback;
#endif
}
if(crm_cluster_connect(&stonith_our_uname, NULL, dispatch, destroy,
#if SUPPORT_HEARTBEAT
&hb_conn
#else
NULL
#endif
) == FALSE){
crm_crit("Cannot sign in to the cluster... terminating");
exit(100);
}
setup_cib();
} else {
stonith_our_uname = crm_strdup("localhost");
}
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(hb_conn) {
hb_conn->llc_ops->delete(hb_conn);
}
#endif
crm_info("Done");
return rc;
}
diff --git a/include/crm/stonith-ng-internal.h b/include/crm/stonith-ng-internal.h
index f88139c532..be66d45d64 100644
--- a/include/crm/stonith-ng-internal.h
+++ b/include/crm/stonith-ng-internal.h
@@ -1,61 +1,62 @@
/*
* 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>
# include <clplumbing/proctrack.h>
typedef struct async_command_s {
int id;
int stdout;
int options;
int timeout;
char *op;
char *origin;
char *client;
char *remote;
char *victim;
char *action;
char *device;
GListPtr device_list;
GListPtr device_next;
- ProcTrack_ops *pt_ops;
- ProcTrackKillInfo killseq[3];
+ void (*done)(GPid pid, gint status, gpointer user_data);
+ guint timer_sigterm;
+ guint timer_sigkill;
} async_command_t;
extern int run_stonith_agent(const char *agent, const char *action, const char *victim,
GHashTable * dev_hash, GHashTable * port_map, int *agent_result,
char **output, async_command_t * track);
extern 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);
#endif
diff --git a/lib/fencing/st_client.c b/lib/fencing/st_client.c
index a32b6145ce..a69b38efcb 100644
--- a/lib/fencing/st_client.c
+++ b/lib/fencing/st_client.c
@@ -1,1919 +1,1939 @@
/*
* 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/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/stonith-ng-internal.h>
#include <crm/msg_xml.h>
#include <crm/common/xml.h>
#include <stonith/stonith.h>
#include <crm/common/mainloop.h>
CRM_TRACE_INIT_DATA(stonith);
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, const xmlNode * msg, int call, int rc, xmlNode * output,
void *userdata);
} 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, const char *event, xmlNode * msg);
} stonith_notify_client_t;
typedef struct stonith_callback_client_s {
void (*callback) (stonith_t * st, const xmlNode * msg, int call, int rc, xmlNode * output,
void *userdata);
const char *id;
void *user_data;
gboolean only_success;
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 enum stonith_errors (*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;
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 = 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);
}
crm_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 = crm_strdup(key);
char *glib_sucks_value = crm_strdup(value);
append_arg(glib_sucks_key, glib_sucks_value, arg_list);
crm_free(glib_sucks_value);
crm_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] == ':') {
crm_free(name);
crm_malloc0(name, 1 + lpc - last);
strncpy(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;
crm_malloc0(param, 1 + lpc - last);
strncpy(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);
crm_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);
crm_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);
}
crm_free(name);
name = NULL;
crm_free(param);
if (map[lpc] == 0) {
break;
}
} else if (isspace(map[lpc])) {
last = lpc;
}
}
crm_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 1.2 */
snprintf(buffer, 511, "pcmk_%s_cmd", action);
value = g_hash_table_lookup(device_args, buffer);
}
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;
+ int pid = GPOINTER_TO_INT(data);
+ crm_info("Child %d timed out, sending SIGTERM", pid);
+ rc = kill(pid, SIGTERM);
+ if(rc < 0) {
+ crm_perror(LOG_ERR, "Couldn't send SIGTERM to %d", pid);
+ }
+ return FALSE;
+}
+
+static gboolean
+st_child_kill(gpointer data)
+{
+ int rc = 0;
+ int pid = GPOINTER_TO_INT(data);
+ crm_info("Child %d timed out, sending SIGKILL", pid);
+ rc = kill(pid, SIGKILL);
+ if(rc < 0) {
+ crm_perror(LOG_ERR, "Couldn't send SIGKILL to %d", pid);
+ }
+ return FALSE;
+}
+
/* Borrowed from libfence and extended */
int
run_stonith_agent(const char *agent, const char *action, const char *victim,
GHashTable * device_args, GHashTable * port_map, int *agent_result, char **output,
async_command_t * track)
{
char *args = make_args(action, victim, device_args, port_map);
int pid, status, len, rc = st_err_internal;
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 (args == NULL || agent == NULL)
goto fail;
len = strlen(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 = st_err_agent_fork;
goto fail;
}
if (pid) {
/* parent */
int ret;
int total = 0;
fcntl(p_read_fd, F_SETFL, fcntl(p_read_fd, F_GETFL, 0) | O_NONBLOCK);
do {
crm_debug("sending args");
ret = write(p_write_fd, 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 = st_err_agent_args;
}
goto fail;
}
close(p_write_fd);
- if (track) {
+ if (track && track->done) {
track->stdout = p_read_fd;
- NewTrackedProc(pid, 0, PT_LOGNORMAL, track, track->pt_ops);
+ g_child_watch_add(pid, track->done, track);
crm_trace("Op: %s on %s, pid: %d, timeout: %d", action, agent, pid, track->timeout);
if (track->timeout) {
- track->killseq[0].mstimeout = track->timeout; /* after timeout send TERM */
- track->killseq[0].signalno = SIGTERM;
- track->killseq[1].mstimeout = 5000; /* after another 5s remove it */
- track->killseq[1].signalno = SIGKILL;
- track->killseq[2].mstimeout = 5000; /* if it's still there after another 5s, complain */
- track->killseq[2].signalno = 0;
-
- SetTrackedProcTimeouts(pid, track->killseq);
+ track->timer_sigterm = g_timeout_add(track->timeout, st_child_term, GINT_TO_POINTER(pid));
+ track->timer_sigkill = g_timeout_add(track->timeout+5000, st_child_kill, GINT_TO_POINTER(pid));
} else {
crm_err("No timeout set for stonith operation %s with device %s", action, agent);
}
close(c_write_fd);
close(c_read_fd);
crm_free(args);
return pid;
} else {
pid_t p;
do {
p = waitpid(pid, &status, 0);
} while (p < 0 && errno == EINTR);
if (p < 0) {
crm_perror(LOG_ERR, "waitpid(%d)", pid);
} else if (p != pid) {
crm_err("Waited for %d, got %d", pid, p);
}
if (output != NULL) {
len = 0;
do {
char buf[500];
ret = read(p_read_fd, buf, 500);
if (ret > 0) {
buf[ret] = 0;
crm_realloc(*output, len + ret + 1);
sprintf((*output) + len, "%s", buf);
crm_debug("%d: %s", ret, (*output) + len);
len += ret;
}
} while (ret == 500 || (ret < 0 && errno == EINTR));
}
rc = st_err_agent;
*agent_result = st_err_agent;
if (WIFEXITED(status)) {
crm_debug("result = %d", WEXITSTATUS(status));
*agent_result = -WEXITSTATUS(status);
rc = 0;
} else if (WIFSIGNALED(status)) {
crm_err("call %s for %s exited due to signal %d", action, agent, WTERMSIG(status));
} else {
crm_err("call %s for %s exited abnormally. stopped=%d, continued=%d",
action, agent, WIFSTOPPED(status), WIFCONTINUED(status));
}
}
} else {
/* 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(agent, agent, NULL);
exit(EXIT_FAILURE);
}
fail:
crm_free(args);
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;
}
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 -2;
}
/* Include Heartbeat agents */
if (namespace == NULL || safe_str_eq("heartbeat", namespace)) {
char **entry = NULL;
char **type_list = stonith_types();
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) {
stonith_free_hostlist(type_list);
}
}
/* 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;
int bufferlen = 0;
char *buffer = NULL;
char *xml_meta_longdesc = NULL;
char *xml_meta_shortdesc = NULL;
char *meta_param = NULL;
char *meta_longdesc = NULL;
char *meta_shortdesc = NULL;
const char *provider = get_stonith_provider(agent, namespace);
Stonith *stonith_obj = NULL;
static const char *no_parameter_info = "<!-- no value -->";
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")) {
int exec_rc = run_stonith_agent(agent, "metadata", NULL, NULL, NULL, &rc, &buffer, NULL);
if (exec_rc < 0 || rc != 0 || buffer == NULL) {
/* failed */
crm_debug("Query failed: %d %d: %s", exec_rc, rc, crm_str(buffer));
/* provide a fake metadata entry */
meta_longdesc = crm_strdup(no_parameter_info);
meta_shortdesc = crm_strdup(no_parameter_info);
meta_param = crm_strdup(" <parameters>\n"
" <parameter name=\"action\">\n"
" <getopt mixed=\"-o\" />\n"
" <content type=\"string\" default=\"reboot\" />\n"
" <shortdesc lang=\"en\">Fencing action (null, off, on, [reboot], status, hostlist, devstatus)</shortdesc>\n"
" </parameter>\n" " </parameters>");
goto build;
} 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");
}
crm_free(buffer);
buffer = dump_xml_formatted(xml);
free_xml(xml);
}
} else {
stonith_obj = stonith_new(agent);
meta_longdesc = crm_strdup(stonith_get_info(stonith_obj, ST_DEVICEDESCR));
if (meta_longdesc == NULL) {
crm_warn("no long description in %s's metadata.", agent);
meta_longdesc = crm_strdup(no_parameter_info);
}
meta_shortdesc = crm_strdup(stonith_get_info(stonith_obj, ST_DEVICEID));
if (meta_shortdesc == NULL) {
crm_warn("no short description in %s's metadata.", agent);
meta_shortdesc = crm_strdup(no_parameter_info);
}
meta_param = crm_strdup(stonith_get_info(stonith_obj, ST_CONF_XML));
if (meta_param == NULL) {
crm_warn("no list of parameters in %s's metadata.", agent);
meta_param = crm_strdup(no_parameter_info);
}
build:
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;
crm_malloc0(buffer, bufferlen);
snprintf(buffer, bufferlen - 1, META_TEMPLATE,
agent, xml_meta_longdesc, xml_meta_shortdesc, meta_param);
xmlFree(xml_meta_longdesc);
xmlFree(xml_meta_shortdesc);
if (stonith_obj) {
stonith_delete(stonith_obj);
}
crm_free(meta_shortdesc);
crm_free(meta_longdesc);
crm_free(meta_param);
}
if (output) {
*output = buffer;
} else {
crm_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 st_err_missing);
data = create_xml_node(NULL, F_STONITH_DEVICE);
crm_xml_add(data, "origin", __FUNCTION__);
crm_xml_add(data, F_STONITH_TARGET, target);
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)
{
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, NULL, call_options, timeout);
free_xml(data);
return rc;
}
static int
stonith_api_fence(stonith_t * stonith, int call_options, const char *node, const char *action,
int timeout)
{
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);
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);
}
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;
crm_malloc0(kvp, 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;
}
const char *
stonith_error2string(enum stonith_errors return_code)
{
const char *error_msg = NULL;
switch (return_code) {
case stonith_ok:
error_msg = "OK";
break;
case st_err_not_supported:
error_msg = "Not supported";
break;
case st_err_authentication:
error_msg = "Not authenticated";
break;
case st_err_generic:
error_msg = "Generic error";
break;
case st_err_internal:
error_msg = "Internal error";
break;
case st_err_unknown_device:
error_msg = "Unknown device";
break;
case st_err_unknown_operation:
error_msg = "Unknown operation";
break;
case st_err_unknown_port:
error_msg = "Unknown victim";
break;
case st_err_none_available:
error_msg = "No available fencing devices";
break;
case st_err_connection:
error_msg = "Not connected";
break;
case st_err_missing:
error_msg = "Missing input";
break;
case st_err_exists:
error_msg = "Device exists";
break;
case st_err_timeout:
error_msg = "Operation timed out";
break;
case st_err_signal:
error_msg = "Killed by signal";
break;
case st_err_ipc:
error_msg = "IPC connection failed";
break;
case st_err_peer:
error_msg = "Error from peer";
break;
case stonith_pending:
error_msg = "Stonith operation is in progress";
break;
case st_err_agent_fork:
error_msg = "Call to fork() failed";
break;
case st_err_agent_args:
error_msg = "Could not send arguments to the stonith device";
break;
case st_err_agent:
error_msg = "Execution of the stonith agent failed";
break;
case st_err_invalid_target:
error_msg = "Invalid target";
break;
case st_err_invalid_level:
error_msg = "Invalid fencing level specified";
break;
}
if (error_msg == NULL) {
crm_err("Unknown Stonith error code: %d", return_code);
error_msg = "<unknown error>";
}
return error_msg;
}
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";
} else {
Stonith *stonith_obj = stonith_new(agent);
if (stonith_obj) {
stonith_delete(stonith_obj);
return "heartbeat";
}
}
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)
{
int rc = HA_OK;
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);
}
if (rc != HA_OK) {
crm_err("Failed to create STONITH operation message");
crm_log_xml_err(op_msg, "BadOp");
free_xml(op_msg);
return NULL;
}
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);
}
crm_free(blob->timer);
crm_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) {
mainloop_del_ipc_client(native->source);
native->source = NULL;
native->ipc = NULL;
} else if (native->ipc != NULL) {
crm_ipc_close(native->ipc);
crm_ipc_destroy(native->ipc);
native->ipc = NULL;
}
stonith->state = stonith_disconnected;
return stonith_ok;
}
static int
stonith_api_signon(stonith_t * stonith, const char *name, int *stonith_fd)
{
int rc = stonith_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 = st_err_connection;
}
} else {
/* With mainloop */
native->source = mainloop_add_ipc_client("stonith-ng", 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 = st_err_connection;
}
if (rc == stonith_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, &reply, -1);
if(rc < 0) {
crm_perror(LOG_DEBUG, "Couldn't complete registration with the fencing API: %d", rc);
rc = st_err_ipc;
} else if(reply == NULL) {
crm_err("Did not receive registration reply");
rc = st_err_internal;
} 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 = st_err_internal;
} else if (tmp_ticket == NULL) {
crm_err("No registration token provided");
crm_log_xml_err(reply, "Bad reply");
rc = st_err_internal;
} else {
crm_trace("Obtained registration token: %s", tmp_ticket);
native->token = crm_strdup(tmp_ticket);
rc = stonith_ok;
}
}
free_xml(reply);
free_xml(hello);
}
if (rc == stonith_ok) {
#if HAVE_MSGFROMIPC_TIMEOUT
stonith->call_timeout = MAX_IPC_DELAY;
#endif
crm_debug("Connection to STONITH successful");
return stonith_ok;
}
crm_debug("Connection to STONITH failed: %s", stonith_error2string(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, NULL, -1);
if(rc < 0) {
crm_perror(LOG_DEBUG, "Couldn't register for fencing notifications: %d", rc);
rc = st_err_ipc;
}
}
free_xml(notify_msg);
return stonith_ok;
}
static int
stonith_api_add_notification(stonith_t * stonith, const char *event,
void (*callback) (stonith_t * stonith, const char *event,
xmlNode * msg))
{
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));
crm_malloc0(new_client, 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");
crm_free(new_client);
return st_err_exists;
} 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 stonith_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;
crm_malloc0(new_client, 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);
crm_free(list_client);
crm_trace("Removed callback");
} else {
crm_trace("Callback not present");
}
crm_free(new_client);
return stonith_ok;
}
static gboolean
stonith_async_timeout_handler(gpointer data)
{
struct timer_rec_s *timer = data;
crm_debug("Async call %d timed out after %dms", timer->call_id, timer->timeout);
stonith_perform_callback(timer->stonith, NULL, timer->call_id, st_err_timeout);
/* Always return TRUE, never remove the handler
* We do that in stonith_del_callback()
*/
return TRUE;
}
static int
stonith_api_add_callback(stonith_t * stonith, int call_id, int timeout, bool only_success,
void *user_data, const char *callback_name,
void (*callback) (stonith_t * st, const xmlNode * msg, int call, int rc,
xmlNode * output, void *userdata))
{
stonith_callback_client_t *blob = NULL;
stonith_private_t *private = NULL;
CRM_CHECK(stonith != NULL, return st_err_missing);
CRM_CHECK(stonith->private != NULL, return st_err_missing);
private = stonith->private;
if (call_id == 0) {
private->op_callback = callback;
} else if (call_id < 0) {
if (only_success == FALSE) {
crm_trace("Call failed, calling %s: %s",
callback_name, stonith_error2string(call_id));
callback(stonith, NULL, call_id, call_id, NULL, user_data);
} else {
crm_warn("STONITH call failed: %s", stonith_error2string(call_id));
}
return FALSE;
}
crm_malloc0(blob, sizeof(stonith_callback_client_t));
blob->id = callback_name;
blob->only_success = only_success;
blob->user_data = user_data;
blob->callback = callback;
if (timeout > 0) {
struct timer_rec_s *async_timer = NULL;
crm_malloc0(async_timer, sizeof(struct timer_rec_s));
blob->timer = async_timer;
async_timer->stonith = stonith;
async_timer->call_id = call_id;
async_timer->timeout = timeout * 1100;
async_timer->ref =
g_timeout_add(async_timer->timeout, stonith_async_timeout_handler, async_timer);
}
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 stonith_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)
{
xmlNode *output = NULL;
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);
output = get_message_xml(msg, F_STONITH_CALLDATA);
}
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 (stonith == NULL) {
crm_debug("No stonith object supplied");
}
if (local_blob.callback != NULL && (rc == stonith_ok || local_blob.only_success == FALSE)) {
crm_trace("Invoking callback %s for call %d", crm_str(local_blob.id), call_id);
local_blob.callback(stonith, msg, call_id, rc, output, local_blob.user_data);
} else if (private->op_callback == NULL && rc != stonith_ok) {
crm_warn("STONITH command failed: %s", stonith_error2string(rc));
crm_log_xml_debug(msg, "Failed STONITH Update");
}
if (private->op_callback != NULL) {
crm_trace("Invoking global callback for call %d", call_id);
private->op_callback(stonith, msg, call_id, rc, output, NULL);
}
crm_trace("OP callback activated.");
}
static void
stonith_send_notification(gpointer data, gpointer user_data)
{
struct notify_blob_s *blob = user_data;
stonith_notify_client_t *entry = data;
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;
}
crm_trace("Invoking callback for %p/%s event...", entry, event);
entry->notify(blob->stonith, event, blob->xml);
crm_trace("Callback invoked...");
}
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;
xmlNode *op_msg = NULL;
xmlNode *op_reply = NULL;
stonith_private_t *native = stonith->private;
if (stonith->state == stonith_disconnected) {
return st_err_connection;
}
if (output_data != NULL) {
*output_data = NULL;
}
if (op == NULL) {
crm_err("No operation specified");
return st_err_missing;
}
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 st_err_missing;
}
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, &op_reply, 1000*timeout);
free_xml(op_msg);
if(rc < 0) {
crm_perror(LOG_ERR, "Couldn't perform %s operation (timeout=%ds): %d", op, timeout, rc);
rc = st_err_ipc;
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 st_err_internal);
free_xml(op_reply);
return stonith->call_id;
}
rc = stonith_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 = st_err_peer;
}
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 = st_err_peer;
} 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 = st_err_peer;
}
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.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 {
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 = stonith_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);
crm_free(private->token);
crm_free(stonith->private);
crm_free(stonith->cmds);
crm_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);
crm_free(client);
}
stonith->cmds->free(stonith);
stonith = NULL;
}
stonith_t *
stonith_api_new(void)
{
stonith_t *new_stonith = NULL;
stonith_private_t *private = NULL;
crm_malloc0(new_stonith, sizeof(stonith_t));
crm_malloc0(private, 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;
crm_malloc0(new_stonith->cmds, 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->call = stonith_api_call;
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 = 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;
crm_malloc0(p, sizeof(stonith_key_value_t));
if (key) {
p->key = crm_strdup(key);
}
if (value) {
p->value = crm_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 = st_err_internal;
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 == stonith_ok) {
rc = st->cmds->fence(st, opts, name, action, timeout);
}
if (st) {
st->cmds->disconnect(st);
stonith_api_delete(st);
}
crm_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 == stonith_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);
}
crm_free(name);
return when;
}