diff --git a/lib/fencing/st_client.c b/lib/fencing/st_client.c
index dc40bbe5a8..ffb5e36468 100644
--- a/lib/fencing/st_client.c
+++ b/lib/fencing/st_client.c
@@ -1,2501 +1,2496 @@
/*
* Copyright (c) 2004 Andrew Beekhof <andrew@beekhof.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include <crm_internal.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <ctype.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <glib.h>
#include <dirent.h>
#include <libgen.h> /* Add it for compiling on OSX */
#include <crm/crm.h>
#include <crm/stonith-ng.h>
#include <crm/fencing/internal.h>
#include <crm/msg_xml.h>
#include <crm/common/xml.h>
#ifdef HAVE_STONITH_STONITH_H
# include <stonith/stonith.h>
# define LHA_STONITH_LIBRARY "libstonith.so.1"
static void *lha_agents_lib = NULL;
#endif
#include <crm/common/mainloop.h>
CRM_TRACE_INIT_DATA(stonith);
struct stonith_action_s {
/*! user defined data */
char *agent;
char *action;
char *victim;
char *args;
int timeout;
int async;
void *userdata;
void (*done_cb) (GPid pid, gint status, const char *output, gpointer user_data);
/*! internal async track data */
int fd_stdout;
int last_timeout_signo;
/*! internal timing information */
time_t initial_start_time;
int tries;
int remaining_timeout;
guint timer_sigterm;
guint timer_sigkill;
int max_retries;
/* device output data */
GPid pid;
int rc;
char *output;
};
typedef struct stonith_private_s {
char *token;
crm_ipc_t *ipc;
mainloop_io_t *source;
GHashTable *stonith_op_callback_table;
GList *notify_list;
void (*op_callback) (stonith_t * st, stonith_callback_data_t * data);
} stonith_private_t;
typedef struct stonith_notify_client_s {
const char *event;
const char *obj_id; /* implement one day */
const char *obj_type; /* implement one day */
void (*notify) (stonith_t * st, stonith_event_t * e);
} stonith_notify_client_t;
typedef struct stonith_callback_client_s {
void (*callback) (stonith_t * st, stonith_callback_data_t * data);
const char *id;
void *user_data;
gboolean only_success;
gboolean allow_timeout_updates;
struct timer_rec_s *timer;
} stonith_callback_client_t;
struct notify_blob_s {
stonith_t *stonith;
xmlNode *xml;
};
struct timer_rec_s {
int call_id;
int timeout;
guint ref;
stonith_t *stonith;
};
typedef int (*stonith_op_t) (const char *, int, const char *, xmlNode *,
xmlNode *, xmlNode *, xmlNode **, xmlNode **);
static const char META_TEMPLATE[] =
"<?xml version=\"1.0\"?>\n"
"<!DOCTYPE resource-agent SYSTEM \"ra-api-1.dtd\">\n"
"<resource-agent name=\"%s\">\n"
" <version>1.0</version>\n"
" <longdesc lang=\"en\">\n"
"%s\n"
" </longdesc>\n"
" <shortdesc lang=\"en\">%s</shortdesc>\n"
"%s\n"
" <actions>\n"
" <action name=\"start\" timeout=\"20\" />\n"
" <action name=\"stop\" timeout=\"15\" />\n"
" <action name=\"status\" timeout=\"20\" />\n"
" <action name=\"monitor\" timeout=\"20\" interval=\"3600\"/>\n"
" <action name=\"meta-data\" timeout=\"15\" />\n"
" </actions>\n"
" <special tag=\"heartbeat\">\n"
" <version>2.0</version>\n" " </special>\n" "</resource-agent>\n";
bool stonith_dispatch(stonith_t * st);
int stonith_dispatch_internal(const char *buffer, ssize_t length, gpointer userdata);
void stonith_perform_callback(stonith_t * stonith, xmlNode * msg, int call_id, int rc);
xmlNode *stonith_create_op(int call_id, const char *token, const char *op, xmlNode * data,
int call_options);
int stonith_send_command(stonith_t * stonith, const char *op, xmlNode * data,
xmlNode ** output_data, int call_options, int timeout);
static void stonith_connection_destroy(gpointer user_data);
static void stonith_send_notification(gpointer data, gpointer user_data);
static int internal_stonith_action_execute(stonith_action_t * action);
static void
stonith_connection_destroy(gpointer user_data)
{
stonith_t *stonith = user_data;
stonith_private_t *native = NULL;
struct notify_blob_s blob;
crm_trace("Sending destroyed notification");
blob.stonith = stonith;
blob.xml = create_xml_node(NULL, "notify");
native = stonith->private;
native->ipc = NULL;
native->source = NULL;
stonith->state = stonith_disconnected;
crm_xml_add(blob.xml, F_TYPE, T_STONITH_NOTIFY);
crm_xml_add(blob.xml, F_SUBTYPE, T_STONITH_NOTIFY_DISCONNECT);
g_list_foreach(native->notify_list, stonith_send_notification, &blob);
free_xml(blob.xml);
}
xmlNode *
create_device_registration_xml(const char *id, const char *namespace, const char *agent,
stonith_key_value_t * params)
{
xmlNode *data = create_xml_node(NULL, F_STONITH_DEVICE);
xmlNode *args = create_xml_node(data, XML_TAG_ATTRS);
#if HAVE_STONITH_STONITH_H
namespace = get_stonith_provider(agent, namespace);
if (safe_str_eq(namespace, "heartbeat")) {
hash2field((gpointer) "plugin", (gpointer) agent, args);
agent = "fence_legacy";
}
#endif
crm_xml_add(data, XML_ATTR_ID, id);
crm_xml_add(data, "origin", __FUNCTION__);
crm_xml_add(data, "agent", agent);
crm_xml_add(data, "namespace", namespace);
for (; params; params = params->next) {
hash2field((gpointer) params->key, (gpointer) params->value, args);
}
return data;
}
static int
stonith_api_register_device(stonith_t * st, int call_options,
const char *id, const char *namespace, const char *agent,
stonith_key_value_t * params)
{
int rc = 0;
xmlNode *data = NULL;
data = create_device_registration_xml(id, namespace, agent, params);
rc = stonith_send_command(st, STONITH_OP_DEVICE_ADD, data, NULL, call_options, 0);
free_xml(data);
return rc;
}
static int
stonith_api_remove_device(stonith_t * st, int call_options, const char *name)
{
int rc = 0;
xmlNode *data = NULL;
data = create_xml_node(NULL, F_STONITH_DEVICE);
crm_xml_add(data, "origin", __FUNCTION__);
crm_xml_add(data, XML_ATTR_ID, name);
rc = stonith_send_command(st, STONITH_OP_DEVICE_DEL, data, NULL, call_options, 0);
free_xml(data);
return rc;
}
static int
stonith_api_remove_level(stonith_t * st, int options, const char *node, int level)
{
int rc = 0;
xmlNode *data = NULL;
data = create_xml_node(NULL, F_STONITH_LEVEL);
crm_xml_add(data, "origin", __FUNCTION__);
crm_xml_add(data, F_STONITH_TARGET, node);
crm_xml_add_int(data, XML_ATTR_ID, level);
rc = stonith_send_command(st, STONITH_OP_LEVEL_DEL, data, NULL, options, 0);
free_xml(data);
return rc;
}
xmlNode *
create_level_registration_xml(const char *node, int level, stonith_key_value_t * device_list)
{
xmlNode *data = create_xml_node(NULL, F_STONITH_LEVEL);
crm_xml_add_int(data, XML_ATTR_ID, level);
crm_xml_add(data, F_STONITH_TARGET, node);
crm_xml_add(data, "origin", __FUNCTION__);
for (; device_list; device_list = device_list->next) {
xmlNode *dev = create_xml_node(data, F_STONITH_DEVICE);
crm_xml_add(dev, XML_ATTR_ID, device_list->value);
}
return data;
}
static int
stonith_api_register_level(stonith_t * st, int options, const char *node, int level,
stonith_key_value_t * device_list)
{
int rc = 0;
xmlNode *data = create_level_registration_xml(node, level, device_list);
rc = stonith_send_command(st, STONITH_OP_LEVEL_ADD, data, NULL, options, 0);
free_xml(data);
return rc;
}
static void
append_arg(gpointer key, gpointer value, gpointer user_data)
{
int len = 3; /* =, \n, \0 */
int last = 0;
char **args = user_data;
CRM_CHECK(key != NULL, return);
CRM_CHECK(value != NULL, return);
if (strstr(key, "pcmk_")) {
return;
} else if (strstr(key, CRM_META)) {
return;
} else if (safe_str_eq(key, "crm_feature_set")) {
return;
}
len += strlen(key);
len += strlen(value);
if (*args != NULL) {
last = strlen(*args);
}
*args = realloc(*args, last + len);
crm_trace("Appending: %s=%s", (char *)key, (char *)value);
sprintf((*args) + last, "%s=%s\n", (char *)key, (char *)value);
}
static void
append_const_arg(const char *key, const char *value, char **arg_list)
{
char *glib_sucks_key = strdup(key);
char *glib_sucks_value = strdup(value);
append_arg(glib_sucks_key, glib_sucks_value, arg_list);
free(glib_sucks_value);
free(glib_sucks_key);
}
static void
append_host_specific_args(const char *victim, const char *map, GHashTable * params, char **arg_list)
{
char *name = NULL;
int last = 0, lpc = 0, max = 0;
if (map == NULL) {
/* The best default there is for now... */
crm_debug("Using default arg map: port=uname");
append_const_arg("port", victim, arg_list);
return;
}
max = strlen(map);
crm_debug("Processing arg map: %s", map);
for (; lpc < max + 1; lpc++) {
if (isalpha(map[lpc])) {
/* keep going */
} else if (map[lpc] == '=' || map[lpc] == ':') {
free(name);
name = calloc(1, 1 + lpc - last);
memcpy(name, map + last, lpc - last);
crm_debug("Got name: %s", name);
last = lpc + 1;
} else if (map[lpc] == 0 || map[lpc] == ',' || isspace(map[lpc])) {
char *param = NULL;
const char *value = NULL;
param = calloc(1, 1 + lpc - last);
memcpy(param, map + last, lpc - last);
last = lpc + 1;
crm_debug("Got key: %s", param);
if (name == NULL) {
crm_err("Misparsed '%s', found '%s' without a name", map, param);
free(param);
continue;
}
if (safe_str_eq(param, "uname")) {
value = victim;
} else {
char *key = crm_meta_name(param);
value = g_hash_table_lookup(params, key);
free(key);
}
if (value) {
crm_debug("Setting '%s'='%s' (%s) for %s", name, value, param, victim);
append_const_arg(name, value, arg_list);
} else {
crm_err("No node attribute '%s' for '%s'", name, victim);
}
free(name);
name = NULL;
free(param);
if (map[lpc] == 0) {
break;
}
} else if (isspace(map[lpc])) {
last = lpc;
}
}
free(name);
}
static char *
make_args(const char *action, const char *victim, uint32_t victim_nodeid, GHashTable * device_args,
GHashTable * port_map)
{
char buffer[512];
char *arg_list = NULL;
const char *value = NULL;
const char *_action = action;
CRM_CHECK(action != NULL, return NULL);
buffer[511] = 0;
snprintf(buffer, 511, "pcmk_%s_action", action);
if (device_args) {
value = g_hash_table_lookup(device_args, buffer);
}
if (value == NULL && device_args) {
/* Legacy support for early 1.1 releases - Remove for 1.4 */
snprintf(buffer, 511, "pcmk_%s_cmd", action);
value = g_hash_table_lookup(device_args, buffer);
}
if (value == NULL && device_args && safe_str_eq(action, "off")) {
/* Legacy support for late 1.1 releases - Remove for 1.4 */
value = g_hash_table_lookup(device_args, "pcmk_poweroff_action");
}
if (value) {
crm_info("Substituting action '%s' for requested operation '%s'", value, action);
action = value;
}
append_const_arg(STONITH_ATTR_ACTION_OP, action, &arg_list);
if (victim && device_args) {
const char *alias = victim;
const char *param = g_hash_table_lookup(device_args, STONITH_ATTR_HOSTARG);
if (port_map && g_hash_table_lookup(port_map, victim)) {
alias = g_hash_table_lookup(port_map, victim);
}
/* Always supply the node's name too:
* https://fedorahosted.org/cluster/wiki/FenceAgentAPI
*/
append_const_arg("nodename", victim, &arg_list);
if (victim_nodeid) {
char nodeid_str[33] = { 0, };
if (snprintf(nodeid_str, 33, "%u", (unsigned int)victim_nodeid)) {
crm_info("For stonith action (%s) for victim %s, adding nodeid (%d) to parameters",
action, victim, nodeid_str);
append_const_arg("nodeid", nodeid_str, &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);
}
}
if (device_args) {
g_hash_table_foreach(device_args, append_arg, &arg_list);
}
if(device_args && g_hash_table_lookup(device_args, STONITH_ATTR_ACTION_OP)) {
if(safe_str_eq(_action,"list")
|| safe_str_eq(_action,"status")
|| safe_str_eq(_action,"monitor")
|| safe_str_eq(_action,"metadata")) {
/* Force use of the calculated command for support ops
* We don't want list or monitor ops initiating fencing, regardless of what the admin configured
*/
append_const_arg(STONITH_ATTR_ACTION_OP, action, &arg_list);
}
}
return arg_list;
}
static gboolean
st_child_term(gpointer data)
{
int rc = 0;
stonith_action_t *track = data;
crm_info("Child %d timed out, sending SIGTERM", track->pid);
track->timer_sigterm = 0;
track->last_timeout_signo = SIGTERM;
rc = kill(-track->pid, SIGTERM);
if (rc < 0) {
crm_perror(LOG_ERR, "Couldn't send SIGTERM to %d", track->pid);
}
return FALSE;
}
static gboolean
st_child_kill(gpointer data)
{
int rc = 0;
stonith_action_t *track = data;
crm_info("Child %d timed out, sending SIGKILL", track->pid);
track->timer_sigkill = 0;
track->last_timeout_signo = SIGKILL;
rc = kill(-track->pid, SIGKILL);
if (rc < 0) {
crm_perror(LOG_ERR, "Couldn't send SIGKILL to %d", track->pid);
}
return FALSE;
}
static void
stonith_action_clear_tracking_data(stonith_action_t * action)
{
if (action->timer_sigterm > 0) {
g_source_remove(action->timer_sigterm);
action->timer_sigterm = 0;
}
if (action->timer_sigkill > 0) {
g_source_remove(action->timer_sigkill);
action->timer_sigkill = 0;
}
if (action->fd_stdout) {
close(action->fd_stdout);
action->fd_stdout = 0;
}
free(action->output);
action->output = NULL;
action->rc = 0;
action->pid = 0;
action->last_timeout_signo = 0;
}
static void
stonith_action_destroy(stonith_action_t * action)
{
stonith_action_clear_tracking_data(action);
free(action->agent);
free(action->args);
free(action->action);
free(action->victim);
free(action);
}
#define FAILURE_MAX_RETRIES 2
stonith_action_t *
stonith_action_create(const char *agent,
const char *_action,
const char *victim,
uint32_t victim_nodeid,
int timeout, GHashTable * device_args, GHashTable * port_map)
{
stonith_action_t *action;
action = calloc(1, sizeof(stonith_action_t));
crm_info("Initiating action %s for agent %s (target=%s)", _action, agent, victim);
action->args = make_args(_action, victim, victim_nodeid, device_args, port_map);
action->agent = strdup(agent);
action->action = strdup(_action);
if (victim) {
action->victim = strdup(victim);
}
action->timeout = action->remaining_timeout = timeout;
action->max_retries = FAILURE_MAX_RETRIES;
if (device_args) {
char buffer[512];
const char *value = NULL;
snprintf(buffer, 511, "pcmk_%s_retries", _action);
value = g_hash_table_lookup(device_args, buffer);
if (value) {
action->max_retries = atoi(value);
}
}
return action;
}
#define READ_MAX 500
static char *
read_output(int fd)
{
char buffer[READ_MAX];
char *output = NULL;
int len = 0;
int more = 0;
if (!fd) {
return NULL;
}
do {
errno = 0;
memset(&buffer, 0, READ_MAX);
more = read(fd, buffer, READ_MAX - 1);
if (more > 0) {
buffer[more] = 0; /* Make sure its nul-terminated for logging
* 'more' is always less than our buffer size
*/
crm_trace("Got %d more bytes: %.200s...", more, buffer);
output = realloc(output, len + more + 1);
snprintf(output + len, more + 1, "%s", buffer);
len += more;
}
} while (more == (READ_MAX - 1) || (more < 0 && errno == EINTR));
return output;
}
static gboolean
update_remaining_timeout(stonith_action_t * action)
{
int diff = time(NULL) - action->initial_start_time;
if (action->tries >= action->max_retries) {
crm_info("Attempted to execute agent %s (%s) the maximum number of times (%d) allowed",
action->agent, action->action, action->max_retries);
action->remaining_timeout = 0;
} else if ((action->rc != -ETIME) && diff < (action->timeout * 0.7)) {
/* only set remaining timeout period if there is 30%
* or greater of the original timeout period left */
action->remaining_timeout = action->timeout - diff;
} else {
action->remaining_timeout = 0;
}
return action->remaining_timeout ? TRUE : FALSE;
}
static void
stonith_action_async_done(mainloop_child_t * p, pid_t pid, int core, int signo, int exitcode)
{
stonith_action_t *action = mainloop_child_userdata(p);
if (action->timer_sigterm > 0) {
g_source_remove(action->timer_sigterm);
}
if (action->timer_sigkill > 0) {
g_source_remove(action->timer_sigkill);
}
if (action->last_timeout_signo) {
action->rc = -ETIME;
crm_notice("Child process %d performing action '%s' timed out with signal %d",
pid, action->action, action->last_timeout_signo);
} else if (signo) {
action->rc = -ECONNABORTED;
crm_notice("Child process %d performing action '%s' timed out with signal %d",
pid, action->action, signo);
} else {
action->rc = exitcode;
crm_debug("Child process %d performing action '%s' exited with rc %d",
pid, action->action, exitcode);
}
action->output = read_output(action->fd_stdout);
if (action->rc != pcmk_ok && update_remaining_timeout(action)) {
int rc = internal_stonith_action_execute(action);
if (rc == pcmk_ok) {
return;
}
}
if (action->done_cb) {
action->done_cb(pid, action->rc, action->output, action->userdata);
}
stonith_action_destroy(action);
}
static int
internal_stonith_action_execute(stonith_action_t * action)
{
int pid, status, len, rc = -EPROTO;
int ret;
int total = 0;
int p_read_fd, p_write_fd; /* parent read/write file descriptors */
int c_read_fd, c_write_fd; /* child read/write file descriptors */
int fd1[2];
int fd2[2];
int is_retry = 0;
/* clear any previous tracking data */
stonith_action_clear_tracking_data(action);
if (!action->tries) {
action->initial_start_time = time(NULL);
}
action->tries++;
if (action->tries > 1) {
crm_info("Attempt %d to execute %s (%s). remaining timeout is %d",
action->tries, action->agent, action->action, action->remaining_timeout);
is_retry = 1;
}
c_read_fd = c_write_fd = p_read_fd = p_write_fd = -1;
if (action->args == NULL || action->agent == NULL)
goto fail;
len = strlen(action->args);
if (pipe(fd1))
goto fail;
p_read_fd = fd1[0];
c_write_fd = fd1[1];
if (pipe(fd2))
goto fail;
c_read_fd = fd2[0];
p_write_fd = fd2[1];
crm_debug("forking");
pid = fork();
if (pid < 0) {
rc = -ECHILD;
goto fail;
}
if (!pid) {
/* child */
setpgid(0, 0);
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);
/* keep retries from executing out of control */
if (is_retry) {
sleep(1);
}
execlp(action->agent, action->agent, NULL);
exit(EXIT_FAILURE);
}
/* parent */
action->pid = pid;
ret = fcntl(p_read_fd, F_SETFL, fcntl(p_read_fd, F_GETFL, 0) | O_NONBLOCK);
if (ret < 0) {
crm_perror(LOG_NOTICE, "Could not change the output of %s to be non-blocking",
action->agent);
}
do {
crm_debug("sending args");
ret = write(p_write_fd, action->args + total, len - total);
if (ret > 0) {
total += ret;
}
} while (errno == EINTR && total < len);
if (total != len) {
crm_perror(LOG_ERR, "Sent %d not %d bytes", total, len);
if (ret >= 0) {
rc = -ECOMM;
}
goto fail;
}
close(p_write_fd); p_write_fd = -1;
/* async */
if (action->async) {
action->fd_stdout = p_read_fd;
mainloop_child_add(pid, 0/* Move the timeout here? */, action->action, action, stonith_action_async_done);
crm_trace("Op: %s on %s, pid: %d, timeout: %ds", action->action, action->agent, pid,
action->remaining_timeout);
action->last_timeout_signo = 0;
if (action->remaining_timeout) {
action->timer_sigterm =
g_timeout_add(1000 * action->remaining_timeout, st_child_term, action);
action->timer_sigkill =
g_timeout_add(1000 * (action->remaining_timeout + 5), st_child_kill, action);
} else {
crm_err("No timeout set for stonith operation %s with device %s",
action->action, action->agent);
}
close(c_write_fd);
close(c_read_fd);
return 0;
} else {
/* sync */
int timeout = action->remaining_timeout + 1;
pid_t p = 0;
while (action->remaining_timeout < 0 || timeout > 0) {
p = waitpid(pid, &status, WNOHANG);
if (p > 0) {
break;
}
sleep(1);
timeout--;
}
if (timeout == 0) {
int killrc = kill(-pid, SIGKILL);
if (killrc && errno != ESRCH) {
crm_err("kill(%d, KILL) failed: %s (%d)", pid, pcmk_strerror(errno), errno);
}
/*
* From sigprocmask(2):
* It is not possible to block SIGKILL or SIGSTOP. Attempts to do so are silently ignored.
*
* This makes it safe to skip WNOHANG here
*/
p = waitpid(pid, &status, 0);
}
if (p <= 0) {
crm_perror(LOG_ERR, "waitpid(%d)", pid);
} else if (p != pid) {
crm_err("Waited for %d, got %d", pid, p);
}
action->output = read_output(p_read_fd);
action->rc = -ECONNABORTED;
rc = action->rc;
if (timeout == 0) {
action->rc = -ETIME;
} else if (WIFEXITED(status)) {
crm_debug("result = %d", WEXITSTATUS(status));
action->rc = -WEXITSTATUS(status);
rc = 0;
} else if (WIFSIGNALED(status)) {
crm_err("call %s for %s exited due to signal %d", action->action, action->agent,
WTERMSIG(status));
} else {
crm_err("call %s for %s exited abnormally. stopped=%d, continued=%d",
action->action, action->agent, WIFSTOPPED(status), WIFCONTINUED(status));
}
}
fail:
if (p_read_fd >= 0) {
close(p_read_fd);
}
if (p_write_fd >= 0) {
close(p_write_fd);
}
if (c_read_fd >= 0) {
close(c_read_fd);
}
if (c_write_fd >= 0) {
close(c_write_fd);
}
return rc;
}
GPid
stonith_action_execute_async(stonith_action_t * action,
void *userdata,
void (*done) (GPid pid, int rc, const char *output,
gpointer user_data))
{
int rc = 0;
if (!action) {
return -1;
}
action->userdata = userdata;
action->done_cb = done;
action->async = 1;
rc = internal_stonith_action_execute(action);
return rc < 0 ? rc : action->pid;
}
int
stonith_action_execute(stonith_action_t * action, int *agent_result, char **output)
{
int rc = 0;
if (!action) {
return -1;
}
do {
rc = internal_stonith_action_execute(action);
if (rc == pcmk_ok) {
/* success! */
break;
}
/* keep retrying while we have time left */
} while (update_remaining_timeout(action));
if (rc) {
/* error */
return rc;
}
if (agent_result) {
*agent_result = action->rc;
}
if (output) {
*output = action->output;
action->output = NULL; /* handed it off, do not free */
}
stonith_action_destroy(action);
return rc;
}
static int
stonith_api_device_list(stonith_t * stonith, int call_options, const char *namespace,
stonith_key_value_t ** devices, int timeout)
{
int count = 0;
if (devices == NULL) {
crm_err("Parameter error: stonith_api_device_list");
return -EFAULT;
}
/* Include Heartbeat agents */
if (namespace == NULL || safe_str_eq("heartbeat", namespace)) {
#if HAVE_STONITH_STONITH_H
static gboolean need_init = TRUE;
char **entry = NULL;
char **type_list = NULL;
static char **(*type_list_fn) (void) = NULL;
static void (*type_free_fn) (char **) = NULL;
if (need_init) {
need_init = FALSE;
type_list_fn =
find_library_function(&lha_agents_lib, LHA_STONITH_LIBRARY, "stonith_types", FALSE);
type_free_fn =
find_library_function(&lha_agents_lib, LHA_STONITH_LIBRARY, "stonith_free_hostlist",
FALSE);
}
if (type_list_fn) {
type_list = (*type_list_fn) ();
}
for (entry = type_list; entry != NULL && *entry; ++entry) {
crm_trace("Added: %s", *entry);
*devices = stonith_key_value_add(*devices, NULL, *entry);
count++;
}
if (type_list && type_free_fn) {
(*type_free_fn) (type_list);
}
#else
if (namespace != NULL) {
return -EINVAL; /* Heartbeat agents not supported */
}
#endif
}
/* Include Red Hat agents, basically: ls -1 @sbin_dir@/fence_* */
if (namespace == NULL || safe_str_eq("redhat", namespace)) {
struct dirent **namelist;
int file_num = scandir(RH_STONITH_DIR, &namelist, 0, alphasort);
if (file_num > 0) {
struct stat prop;
char buffer[FILENAME_MAX + 1];
while (file_num--) {
if ('.' == namelist[file_num]->d_name[0]) {
free(namelist[file_num]);
continue;
} else if (0 != strncmp(RH_STONITH_PREFIX,
namelist[file_num]->d_name, strlen(RH_STONITH_PREFIX))) {
free(namelist[file_num]);
continue;
}
snprintf(buffer, FILENAME_MAX, "%s/%s", RH_STONITH_DIR, namelist[file_num]->d_name);
if (stat(buffer, &prop) == 0 && S_ISREG(prop.st_mode)) {
*devices = stonith_key_value_add(*devices, NULL, namelist[file_num]->d_name);
count++;
}
free(namelist[file_num]);
}
free(namelist);
}
}
return count;
}
#if HAVE_STONITH_STONITH_H
static inline char *
strdup_null(const char *val)
{
if (val) {
return strdup(val);
}
return NULL;
}
static void
stonith_plugin(int priority, const char *fmt, ...)
G_GNUC_PRINTF(2, 3);
static void
stonith_plugin(int priority, const char *fmt, ...)
{
va_list args;
char *str;
int err = errno;
va_start(args, fmt);
str = g_strdup_vprintf(fmt, args);
va_end(args);
do_crm_log_alias(priority, __FILE__, __func__, __LINE__, "%s", str);
g_free(str);
errno = err;
}
#endif
static int
stonith_api_device_metadata(stonith_t * stonith, int call_options, const char *agent,
const char *namespace, char **output, int timeout)
{
int rc = 0;
char *buffer = NULL;
const char *provider = get_stonith_provider(agent, namespace);
crm_trace("looking up %s/%s metadata", agent, provider);
/* By having this in a library, we can access it from stonith_admin
* when neither lrmd or stonith-ng are running
* Important for the crm shell's validations...
*/
if (safe_str_eq(provider, "redhat")) {
stonith_action_t *action = stonith_action_create(agent, "metadata", NULL, 0, 5, NULL, NULL);
int exec_rc = stonith_action_execute(action, &rc, &buffer);
if (exec_rc < 0 || rc != 0 || buffer == NULL) {
crm_debug("Query failed: %d %d: %s", exec_rc, rc, crm_str(buffer));
free(buffer); /* Just in case */
return -EINVAL;
} else {
xmlNode *xml = string2xml(buffer);
xmlNode *actions = NULL;
xmlXPathObject *xpathObj = NULL;
xpathObj = xpath_search(xml, "//actions");
if (numXpathResults(xpathObj) > 0) {
actions = getXpathResult(xpathObj, 0);
}
freeXpathObject(xpathObj);
/* Now fudge the metadata so that the start/stop actions appear */
xpathObj = xpath_search(xml, "//action[@name='stop']");
if (numXpathResults(xpathObj) <= 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");
}
freeXpathObject(xpathObj);
/* Now fudge the metadata so that the port isn't required in the configuration */
xpathObj = xpath_search(xml, "//parameter[@name='port']");
if (numXpathResults(xpathObj) > 0) {
/* We'll fill this in */
xmlNode *tmp = getXpathResult(xpathObj, 0);
crm_xml_add(tmp, "required", "0");
}
freeXpathObject(xpathObj);
free(buffer);
buffer = dump_xml_formatted(xml);
free_xml(xml);
if (!buffer) {
return -EINVAL;
}
}
} else {
#if !HAVE_STONITH_STONITH_H
return -EINVAL; /* Heartbeat agents not supported */
#else
int bufferlen = 0;
static const char *no_parameter_info = "<!-- no value -->";
Stonith *stonith_obj = NULL;
static gboolean need_init = TRUE;
static Stonith *(*st_new_fn) (const char *) = NULL;
static const char *(*st_info_fn) (Stonith *, int) = NULL;
static void (*st_del_fn) (Stonith *) = NULL;
static void (*st_log_fn) (Stonith *, PILLogFun) = NULL;
if (need_init) {
need_init = FALSE;
st_new_fn =
find_library_function(&lha_agents_lib, LHA_STONITH_LIBRARY, "stonith_new", FALSE);
st_del_fn =
find_library_function(&lha_agents_lib, LHA_STONITH_LIBRARY, "stonith_delete",
FALSE);
st_log_fn =
find_library_function(&lha_agents_lib, LHA_STONITH_LIBRARY, "stonith_set_log",
FALSE);
st_info_fn =
find_library_function(&lha_agents_lib, LHA_STONITH_LIBRARY, "stonith_get_info",
FALSE);
}
if (lha_agents_lib && st_new_fn && st_del_fn && st_info_fn && st_log_fn) {
char *xml_meta_longdesc = NULL;
char *xml_meta_shortdesc = NULL;
char *meta_param = NULL;
char *meta_longdesc = NULL;
char *meta_shortdesc = NULL;
stonith_obj = (*st_new_fn) (agent);
if (stonith_obj) {
(*st_log_fn) (stonith_obj, (PILLogFun) & stonith_plugin);
meta_longdesc = strdup_null((*st_info_fn) (stonith_obj, ST_DEVICEDESCR));
if (meta_longdesc == NULL) {
crm_warn("no long description in %s's metadata.", agent);
meta_longdesc = strdup(no_parameter_info);
}
meta_shortdesc = strdup_null((*st_info_fn) (stonith_obj, ST_DEVICEID));
if (meta_shortdesc == NULL) {
crm_warn("no short description in %s's metadata.", agent);
meta_shortdesc = strdup(no_parameter_info);
}
meta_param = strdup_null((*st_info_fn) (stonith_obj, ST_CONF_XML));
if (meta_param == NULL) {
crm_warn("no list of parameters in %s's metadata.", agent);
meta_param = strdup(no_parameter_info);
}
(*st_del_fn) (stonith_obj);
} else {
return -EINVAL; /* Heartbeat agents not supported */
}
xml_meta_longdesc =
(char *)xmlEncodeEntitiesReentrant(NULL, (const unsigned char *)meta_longdesc);
xml_meta_shortdesc =
(char *)xmlEncodeEntitiesReentrant(NULL, (const unsigned char *)meta_shortdesc);
bufferlen = strlen(META_TEMPLATE) + strlen(agent)
+ strlen(xml_meta_longdesc) + strlen(xml_meta_shortdesc)
+ strlen(meta_param) + 1;
buffer = calloc(1, bufferlen);
snprintf(buffer, bufferlen - 1, META_TEMPLATE,
agent, xml_meta_longdesc, xml_meta_shortdesc, meta_param);
xmlFree(xml_meta_longdesc);
xmlFree(xml_meta_shortdesc);
free(meta_shortdesc);
free(meta_longdesc);
free(meta_param);
}
#endif
}
if (output) {
*output = buffer;
} else {
free(buffer);
}
return rc;
}
static int
stonith_api_query(stonith_t * stonith, int call_options, const char *target,
stonith_key_value_t ** devices, int timeout)
{
int rc = 0, lpc = 0, max = 0;
xmlNode *data = NULL;
xmlNode *output = NULL;
xmlXPathObjectPtr xpathObj = NULL;
CRM_CHECK(devices != NULL, return -EINVAL);
data = create_xml_node(NULL, F_STONITH_DEVICE);
crm_xml_add(data, "origin", __FUNCTION__);
crm_xml_add(data, F_STONITH_TARGET, target);
crm_xml_add(data, F_STONITH_ACTION, "off");
rc = stonith_send_command(stonith, STONITH_OP_QUERY, data, &output, call_options, timeout);
if (rc < 0) {
return rc;
}
xpathObj = xpath_search(output, "//@agent");
if (xpathObj) {
max = numXpathResults(xpathObj);
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));
}
freeXpathObject(xpathObj);
}
free_xml(output);
free_xml(data);
return max;
}
static int
stonith_api_call(stonith_t * stonith,
int call_options,
const char *id,
const char *action, const char *victim, int timeout, xmlNode ** output)
{
int rc = 0;
xmlNode *data = NULL;
data = create_xml_node(NULL, F_STONITH_DEVICE);
crm_xml_add(data, "origin", __FUNCTION__);
crm_xml_add(data, F_STONITH_DEVICE, id);
crm_xml_add(data, F_STONITH_ACTION, action);
crm_xml_add(data, F_STONITH_TARGET, victim);
rc = stonith_send_command(stonith, STONITH_OP_EXEC, data, output, call_options, timeout);
free_xml(data);
return rc;
}
static int
stonith_api_list(stonith_t * stonith, int call_options, const char *id, char **list_info,
int timeout)
{
int rc;
xmlNode *output = NULL;
rc = stonith_api_call(stonith, call_options, id, "list", NULL, timeout, &output);
if (output && list_info) {
const char *list_str;
list_str = crm_element_value(output, "st_output");
if (list_str) {
*list_info = strdup(list_str);
}
}
if (output) {
free_xml(output);
}
return rc;
}
static int
stonith_api_monitor(stonith_t * stonith, int call_options, const char *id, int timeout)
{
return stonith_api_call(stonith, call_options, id, "monitor", NULL, timeout, NULL);
}
static int
stonith_api_status(stonith_t * stonith, int call_options, const char *id, const char *port,
int timeout)
{
return stonith_api_call(stonith, call_options, id, "status", port, timeout, NULL);
}
static int
stonith_api_fence(stonith_t * stonith, int call_options, const char *node, const char *action,
int timeout, int tolerance)
{
int rc = 0;
xmlNode *data = NULL;
data = create_xml_node(NULL, __FUNCTION__);
crm_xml_add(data, F_STONITH_TARGET, node);
crm_xml_add(data, F_STONITH_ACTION, action);
crm_xml_add_int(data, F_STONITH_TIMEOUT, timeout);
crm_xml_add_int(data, F_STONITH_TOLERANCE, tolerance);
rc = stonith_send_command(stonith, STONITH_OP_FENCE, data, NULL, call_options, timeout);
free_xml(data);
return rc;
}
static int
stonith_api_confirm(stonith_t * stonith, int call_options, const char *target)
{
return stonith_api_fence(stonith, call_options | st_opt_manual_ack, target, "off", 0, 0);
}
static int
stonith_api_history(stonith_t * stonith, int call_options, const char *node,
stonith_history_t ** history, int timeout)
{
int rc = 0;
xmlNode *data = NULL;
xmlNode *output = NULL;
stonith_history_t *last = NULL;
*history = NULL;
if (node) {
data = create_xml_node(NULL, __FUNCTION__);
crm_xml_add(data, F_STONITH_TARGET, node);
}
rc = stonith_send_command(stonith, STONITH_OP_FENCE_HISTORY, data, &output,
call_options | st_opt_sync_call, timeout);
free_xml(data);
if (rc == 0) {
xmlNode *op = NULL;
xmlNode *reply = get_xpath_object("//" F_STONITH_HISTORY_LIST, output, LOG_ERR);
for (op = __xml_first_child(reply); op != NULL; op = __xml_next(op)) {
stonith_history_t *kvp;
kvp = calloc(1, sizeof(stonith_history_t));
kvp->target = crm_element_value_copy(op, F_STONITH_TARGET);
kvp->action = crm_element_value_copy(op, F_STONITH_ACTION);
kvp->origin = crm_element_value_copy(op, F_STONITH_ORIGIN);
kvp->delegate = crm_element_value_copy(op, F_STONITH_DELEGATE);
kvp->client = crm_element_value_copy(op, F_STONITH_CLIENTNAME);
crm_element_value_int(op, F_STONITH_DATE, &kvp->completed);
crm_element_value_int(op, F_STONITH_STATE, &kvp->state);
if (last) {
last->next = kvp;
} else {
*history = kvp;
}
last = kvp;
}
}
return rc;
}
gboolean
is_redhat_agent(const char *agent)
{
int rc = 0;
struct stat prop;
char buffer[FILENAME_MAX + 1];
snprintf(buffer, FILENAME_MAX, "%s/%s", RH_STONITH_DIR, agent);
rc = stat(buffer, &prop);
if (rc >= 0 && S_ISREG(prop.st_mode)) {
return TRUE;
}
return FALSE;
}
const char *
get_stonith_provider(const char *agent, const char *provider)
{
/* This function sucks */
if (is_redhat_agent(agent)) {
return "redhat";
#if HAVE_STONITH_STONITH_H
} else {
Stonith *stonith_obj = NULL;
static gboolean need_init = TRUE;
static Stonith *(*st_new_fn) (const char *) = NULL;
static void (*st_del_fn) (Stonith *) = NULL;
if (need_init) {
need_init = FALSE;
st_new_fn =
find_library_function(&lha_agents_lib, LHA_STONITH_LIBRARY, "stonith_new", FALSE);
st_del_fn =
find_library_function(&lha_agents_lib, LHA_STONITH_LIBRARY, "stonith_delete",
FALSE);
}
if (lha_agents_lib && st_new_fn && st_del_fn) {
stonith_obj = (*st_new_fn) (agent);
if (stonith_obj) {
(*st_del_fn) (stonith_obj);
return "heartbeat";
}
}
#endif
}
crm_err("No such device: %s", agent);
return NULL;
}
static gint
stonithlib_GCompareFunc(gconstpointer a, gconstpointer b)
{
int rc = 0;
const stonith_notify_client_t *a_client = a;
const stonith_notify_client_t *b_client = b;
CRM_CHECK(a_client->event != NULL && b_client->event != NULL, return 0);
rc = strcmp(a_client->event, b_client->event);
if (rc == 0) {
if (a_client->notify == NULL || b_client->notify == NULL) {
return 0;
} else if (a_client->notify == b_client->notify) {
return 0;
} else if (((long)a_client->notify) < ((long)b_client->notify)) {
crm_err("callbacks for %s are not equal: %p vs. %p",
a_client->event, a_client->notify, b_client->notify);
return -1;
}
crm_err("callbacks for %s are not equal: %p vs. %p",
a_client->event, a_client->notify, b_client->notify);
return 1;
}
return rc;
}
xmlNode *
stonith_create_op(int call_id, const char *token, const char *op, xmlNode * data, int call_options)
{
xmlNode *op_msg = create_xml_node(NULL, "stonith_command");
CRM_CHECK(op_msg != NULL, return NULL);
CRM_CHECK(token != NULL, return NULL);
crm_xml_add(op_msg, F_XML_TAGNAME, "stonith_command");
crm_xml_add(op_msg, F_TYPE, T_STONITH_NG);
crm_xml_add(op_msg, F_STONITH_CALLBACK_TOKEN, token);
crm_xml_add(op_msg, F_STONITH_OPERATION, op);
crm_xml_add_int(op_msg, F_STONITH_CALLID, call_id);
crm_trace("Sending call options: %.8lx, %d", (long)call_options, call_options);
crm_xml_add_int(op_msg, F_STONITH_CALLOPTS, call_options);
if (data != NULL) {
add_message_xml(op_msg, F_STONITH_CALLDATA, data);
}
return op_msg;
}
static void
stonith_destroy_op_callback(gpointer data)
{
stonith_callback_client_t *blob = data;
if (blob->timer && blob->timer->ref > 0) {
g_source_remove(blob->timer->ref);
}
free(blob->timer);
free(blob);
}
static int
stonith_api_signoff(stonith_t * stonith)
{
stonith_private_t *native = stonith->private;
crm_debug("Signing out of the STONITH Service");
if (native->source != NULL) {
/* Attached to mainloop */
mainloop_del_ipc_client(native->source);
native->source = NULL;
native->ipc = NULL;
} else if (native->ipc) {
/* Not attached to mainloop */
crm_ipc_t *ipc = native->ipc;
native->ipc = NULL;
crm_ipc_close(ipc);
crm_ipc_destroy(ipc);
}
free(native->token); native->token = NULL;
stonith->state = stonith_disconnected;
return pcmk_ok;
}
static int
stonith_api_signon(stonith_t * stonith, const char *name, int *stonith_fd)
{
int rc = pcmk_ok;
stonith_private_t *native = stonith->private;
static struct ipc_client_callbacks st_callbacks = {
.dispatch = stonith_dispatch_internal,
.destroy = stonith_connection_destroy
};
crm_trace("Connecting command channel");
stonith->state = stonith_connected_command;
if (stonith_fd) {
/* No mainloop */
native->ipc = crm_ipc_new("stonith-ng", 0);
if (native->ipc && crm_ipc_connect(native->ipc)) {
*stonith_fd = crm_ipc_get_fd(native->ipc);
} else if (native->ipc) {
rc = -ENOTCONN;
}
} else {
/* With mainloop */
native->source =
mainloop_add_ipc_client("stonith-ng", G_PRIORITY_MEDIUM, 0, stonith, &st_callbacks);
native->ipc = mainloop_get_ipc_client(native->source);
}
if (native->ipc == NULL) {
crm_debug("Could not connect to the Stonith API");
rc = -ENOTCONN;
}
if (rc == pcmk_ok) {
xmlNode *reply = NULL;
xmlNode *hello = create_xml_node(NULL, "stonith_command");
crm_xml_add(hello, F_TYPE, T_STONITH_NG);
crm_xml_add(hello, F_STONITH_OPERATION, CRM_OP_REGISTER);
crm_xml_add(hello, F_STONITH_CLIENTNAME, name);
rc = crm_ipc_send(native->ipc, hello, crm_ipc_client_response, -1, &reply);
if (rc < 0) {
crm_perror(LOG_DEBUG, "Couldn't complete registration with the fencing API: %d", rc);
rc = -ECOMM;
} else if (reply == NULL) {
crm_err("Did not receive registration reply");
rc = -EPROTO;
} else {
const char *msg_type = crm_element_value(reply, F_STONITH_OPERATION);
const char *tmp_ticket = crm_element_value(reply, F_STONITH_CLIENTID);
if (safe_str_neq(msg_type, CRM_OP_REGISTER)) {
crm_err("Invalid registration message: %s", msg_type);
crm_log_xml_err(reply, "Bad reply");
rc = -EPROTO;
} else if (tmp_ticket == NULL) {
crm_err("No registration token provided");
crm_log_xml_err(reply, "Bad reply");
rc = -EPROTO;
} else {
crm_trace("Obtained registration token: %s", tmp_ticket);
native->token = strdup(tmp_ticket);
rc = pcmk_ok;
}
}
free_xml(reply);
free_xml(hello);
}
if (rc == pcmk_ok) {
#if HAVE_MSGFROMIPC_TIMEOUT
stonith->call_timeout = MAX_IPC_DELAY;
#endif
crm_debug("Connection to STONITH successful");
return pcmk_ok;
}
crm_debug("Connection to STONITH failed: %s", pcmk_strerror(rc));
stonith->cmds->disconnect(stonith);
return rc;
}
static int
stonith_set_notification(stonith_t * stonith, const char *callback, int enabled)
{
xmlNode *notify_msg = create_xml_node(NULL, __FUNCTION__);
stonith_private_t *native = stonith->private;
if (stonith->state != stonith_disconnected) {
int rc;
crm_xml_add(notify_msg, F_STONITH_OPERATION, T_STONITH_NOTIFY);
if (enabled) {
crm_xml_add(notify_msg, F_STONITH_NOTIFY_ACTIVATE, callback);
} else {
crm_xml_add(notify_msg, F_STONITH_NOTIFY_DEACTIVATE, callback);
}
rc = crm_ipc_send(native->ipc, notify_msg, crm_ipc_client_response, -1, NULL);
if (rc < 0) {
crm_perror(LOG_DEBUG, "Couldn't register for fencing notifications: %d", rc);
rc = -ECOMM;
}
}
free_xml(notify_msg);
return pcmk_ok;
}
static int
stonith_api_add_notification(stonith_t * stonith, const char *event,
void (*callback) (stonith_t * stonith, stonith_event_t * e))
{
GList *list_item = NULL;
stonith_notify_client_t *new_client = NULL;
stonith_private_t *private = NULL;
private = stonith->private;
crm_trace("Adding callback for %s events (%d)", event, g_list_length(private->notify_list));
new_client = calloc(1, sizeof(stonith_notify_client_t));
new_client->event = event;
new_client->notify = callback;
list_item = g_list_find_custom(private->notify_list, new_client, stonithlib_GCompareFunc);
if (list_item != NULL) {
crm_warn("Callback already present");
free(new_client);
return -ENOTUNIQ;
} else {
private->notify_list = g_list_append(private->notify_list, new_client);
stonith_set_notification(stonith, event, 1);
crm_trace("Callback added (%d)", g_list_length(private->notify_list));
}
return pcmk_ok;
}
static int
stonith_api_del_notification(stonith_t * stonith, const char *event)
{
GList *list_item = NULL;
stonith_notify_client_t *new_client = NULL;
stonith_private_t *private = NULL;
crm_debug("Removing callback for %s events", event);
private = stonith->private;
new_client = calloc(1, sizeof(stonith_notify_client_t));
new_client->event = event;
new_client->notify = NULL;
list_item = g_list_find_custom(private->notify_list, new_client, stonithlib_GCompareFunc);
stonith_set_notification(stonith, event, 0);
if (list_item != NULL) {
stonith_notify_client_t *list_client = list_item->data;
private->notify_list = g_list_remove(private->notify_list, list_client);
free(list_client);
crm_trace("Removed callback");
} else {
crm_trace("Callback not present");
}
free(new_client);
return pcmk_ok;
}
static gboolean
stonith_async_timeout_handler(gpointer data)
{
struct timer_rec_s *timer = data;
crm_err("Async call %d timed out after %dms", timer->call_id, timer->timeout);
stonith_perform_callback(timer->stonith, NULL, timer->call_id, -ETIME);
/* Always return TRUE, never remove the handler
* We do that in stonith_del_callback()
*/
return TRUE;
}
static void
set_callback_timeout(stonith_callback_client_t * callback, stonith_t * stonith, int call_id,
int timeout)
{
struct timer_rec_s *async_timer = callback->timer;
if (timeout <= 0) {
return;
}
if (!async_timer) {
async_timer = calloc(1, sizeof(struct timer_rec_s));
callback->timer = async_timer;
}
async_timer->stonith = stonith;
async_timer->call_id = call_id;
/* Allow a fair bit of grace to allow the server to tell us of a timeout
* This is only a fallback
*/
async_timer->timeout = (timeout + 60) * 1000;
if (async_timer->ref) {
g_source_remove(async_timer->ref);
}
async_timer->ref =
g_timeout_add(async_timer->timeout, stonith_async_timeout_handler, async_timer);
}
static void
update_callback_timeout(int call_id, int timeout, stonith_t * st)
{
stonith_callback_client_t *callback = NULL;
stonith_private_t *private = st->private;
callback = g_hash_table_lookup(private->stonith_op_callback_table, GINT_TO_POINTER(call_id));
if (!callback || !callback->allow_timeout_updates) {
return;
}
set_callback_timeout(callback, st, call_id, timeout);
}
static void
invoke_callback(stonith_t * st, int call_id, int rc, void *userdata,
void (*callback) (stonith_t * st, stonith_callback_data_t * data))
{
stonith_callback_data_t data = { 0, };
data.call_id = call_id;
data.rc = rc;
data.userdata = userdata;
callback(st, &data);
}
static int
stonith_api_add_callback(stonith_t * stonith, int call_id, int timeout, int options,
void *user_data, const char *callback_name,
void (*callback) (stonith_t * st, stonith_callback_data_t * data))
{
stonith_callback_client_t *blob = NULL;
stonith_private_t *private = NULL;
CRM_CHECK(stonith != NULL, return -EINVAL);
CRM_CHECK(stonith->private != NULL, return -EINVAL);
private = stonith->private;
if (call_id == 0) {
private->op_callback = callback;
} else if (call_id < 0) {
if (!(options & st_opt_report_only_success)) {
crm_trace("Call failed, calling %s: %s", callback_name, pcmk_strerror(call_id));
invoke_callback(stonith, call_id, call_id, user_data, callback);
} else {
crm_warn("STONITH call failed: %s", pcmk_strerror(call_id));
}
return FALSE;
}
blob = calloc(1, sizeof(stonith_callback_client_t));
blob->id = callback_name;
blob->only_success = (options & st_opt_report_only_success) ? TRUE : FALSE;
blob->user_data = user_data;
blob->callback = callback;
blob->allow_timeout_updates = (options & st_opt_timeout_updates) ? TRUE : FALSE;
if (timeout > 0) {
set_callback_timeout(blob, stonith, call_id, timeout);
}
g_hash_table_insert(private->stonith_op_callback_table, GINT_TO_POINTER(call_id), blob);
crm_trace("Added callback to %s for call %d", callback_name, call_id);
return TRUE;
}
static int
stonith_api_del_callback(stonith_t * stonith, int call_id, bool all_callbacks)
{
stonith_private_t *private = stonith->private;
if (all_callbacks) {
private->op_callback = NULL;
g_hash_table_destroy(private->stonith_op_callback_table);
private->stonith_op_callback_table = g_hash_table_new_full(g_direct_hash, g_direct_equal,
NULL,
stonith_destroy_op_callback);
} else if (call_id == 0) {
private->op_callback = NULL;
} else {
g_hash_table_remove(private->stonith_op_callback_table, GINT_TO_POINTER(call_id));
}
return pcmk_ok;
}
static void
stonith_dump_pending_op(gpointer key, gpointer value, gpointer user_data)
{
int call = GPOINTER_TO_INT(key);
stonith_callback_client_t *blob = value;
crm_debug("Call %d (%s): pending", call, crm_str(blob->id));
}
void
stonith_dump_pending_callbacks(stonith_t * stonith)
{
stonith_private_t *private = stonith->private;
if (private->stonith_op_callback_table == NULL) {
return;
}
return g_hash_table_foreach(private->stonith_op_callback_table, stonith_dump_pending_op, NULL);
}
void
stonith_perform_callback(stonith_t * stonith, xmlNode * msg, int call_id, int rc)
{
stonith_private_t *private = NULL;
stonith_callback_client_t *blob = NULL;
stonith_callback_client_t local_blob;
CRM_CHECK(stonith != NULL, return);
CRM_CHECK(stonith->private != NULL, return);
private = stonith->private;
local_blob.id = NULL;
local_blob.callback = NULL;
local_blob.user_data = NULL;
local_blob.only_success = FALSE;
if (msg != NULL) {
crm_element_value_int(msg, F_STONITH_RC, &rc);
crm_element_value_int(msg, F_STONITH_CALLID, &call_id);
}
CRM_CHECK(call_id > 0, crm_log_xml_err(msg, "Bad result"));
blob = g_hash_table_lookup(private->stonith_op_callback_table, GINT_TO_POINTER(call_id));
if (blob != NULL) {
local_blob = *blob;
blob = NULL;
stonith_api_del_callback(stonith, call_id, FALSE);
} else {
crm_trace("No callback found for call %d", call_id);
local_blob.callback = NULL;
}
if (local_blob.callback != NULL && (rc == pcmk_ok || local_blob.only_success == FALSE)) {
crm_trace("Invoking callback %s for call %d", crm_str(local_blob.id), call_id);
invoke_callback(stonith, call_id, rc, local_blob.user_data, local_blob.callback);
} else if (private->op_callback == NULL && rc != pcmk_ok) {
crm_warn("STONITH command failed: %s", pcmk_strerror(rc));
crm_log_xml_debug(msg, "Failed STONITH Update");
}
if (private->op_callback != NULL) {
crm_trace("Invoking global callback for call %d", call_id);
invoke_callback(stonith, call_id, rc, NULL, private->op_callback);
}
crm_trace("OP callback activated.");
}
/*
<notify t="st_notify" subt="st_device_register" st_op="st_device_register" st_rc="0" >
<st_calldata >
<stonith_command t="stonith-ng" st_async_id="088fb640-431a-48b9-b2fc-c4ff78d0a2d9" st_op="st_device_register" st_callid="2" st_callopt="4096" st_timeout="0" st_clientid="088fb640-431a-48b9-b2fc-c4ff78d0a2d9" st_clientname="stonith-test" >
<st_calldata >
<st_device_id id="test-id" origin="create_device_registration_xml" agent="fence_virsh" namespace="stonith-ng" >
<attributes ipaddr="localhost" pcmk-portmal="some-host=pcmk-1 pcmk-3=3,4" login="root" identity_file="/root/.ssh/id_dsa" />
</st_device_id>
</st_calldata>
</stonith_command>
</st_calldata>
</notify>
<notify t="st_notify" subt="st_notify_fence" st_op="st_notify_fence" st_rc="0" >
<st_calldata >
<st_notify_fence st_rc="0" st_target="some-host" st_op="st_fence" st_delegate="test-id" st_origin="61dd7759-e229-4be7-b1f8-ef49dd14d9f0" />
</st_calldata>
</notify>
*/
static stonith_event_t *
xml_to_event(xmlNode * msg)
{
stonith_event_t *event = calloc(1, sizeof(stonith_event_t));
const char *ntype = crm_element_value(msg, F_SUBTYPE);
char *data_addr = g_strdup_printf("//%s", ntype);
xmlNode *data = get_xpath_object(data_addr, msg, LOG_DEBUG);
crm_log_xml_trace(msg, "stonith_notify");
crm_element_value_int(msg, F_STONITH_RC, &(event->result));
if (safe_str_eq(ntype, T_STONITH_NOTIFY_FENCE)) {
event->operation = crm_element_value_copy(msg, F_STONITH_OPERATION);
if (data) {
event->origin = crm_element_value_copy(data, F_STONITH_ORIGIN);
event->action = crm_element_value_copy(data, F_STONITH_ACTION);
event->target = crm_element_value_copy(data, F_STONITH_TARGET);
event->executioner = crm_element_value_copy(data, F_STONITH_DELEGATE);
event->id = crm_element_value_copy(data, F_STONITH_REMOTE_OP_ID);
event->client_origin = crm_element_value_copy(data, F_STONITH_CLIENTNAME);
} else {
crm_err("No data for %s event", ntype);
crm_log_xml_notice(msg, "BadEvent");
}
}
g_free(data_addr);
return event;
}
static void
event_free(stonith_event_t * event)
{
free(event->id);
free(event->type);
free(event->message);
free(event->operation);
free(event->origin);
free(event->action);
free(event->target);
free(event->executioner);
free(event->device);
free(event->client_origin);
free(event);
}
static void
stonith_send_notification(gpointer data, gpointer user_data)
{
struct notify_blob_s *blob = user_data;
stonith_notify_client_t *entry = data;
stonith_event_t *st_event = NULL;
const char *event = NULL;
if (blob->xml == NULL) {
crm_warn("Skipping callback - NULL message");
return;
}
event = crm_element_value(blob->xml, F_SUBTYPE);
if (entry == NULL) {
crm_warn("Skipping callback - NULL callback client");
return;
} else if (entry->notify == NULL) {
crm_warn("Skipping callback - NULL callback");
return;
} else if (safe_str_neq(entry->event, event)) {
crm_trace("Skipping callback - event mismatch %p/%s vs. %s", entry, entry->event, event);
return;
}
st_event = xml_to_event(blob->xml);
crm_trace("Invoking callback for %p/%s event...", entry, event);
entry->notify(blob->stonith, st_event);
crm_trace("Callback invoked...");
event_free(st_event);
}
int
stonith_send_command(stonith_t * stonith, const char *op, xmlNode * data, xmlNode ** output_data,
int call_options, int timeout)
{
int rc = 0;
int reply_id = -1;
enum crm_ipc_flags ipc_flags = crm_ipc_flags_none;
xmlNode *op_msg = NULL;
xmlNode *op_reply = NULL;
stonith_private_t *native = stonith->private;
if (stonith->state == stonith_disconnected) {
return -ENOTCONN;
}
if (output_data != NULL) {
*output_data = NULL;
}
if (op == NULL) {
crm_err("No operation specified");
return -EINVAL;
}
if (call_options & st_opt_sync_call) {
ipc_flags |= crm_ipc_client_response;
}
stonith->call_id++;
/* prevent call_id from being negative (or zero) and conflicting
* with the stonith_errors enum
* use 2 because we use it as (stonith->call_id - 1) below
*/
if (stonith->call_id < 1) {
stonith->call_id = 1;
}
CRM_CHECK(native->token != NULL,;
);
op_msg = stonith_create_op(stonith->call_id, native->token, op, data, call_options);
if (op_msg == NULL) {
return -EINVAL;
}
crm_xml_add_int(op_msg, F_STONITH_TIMEOUT, timeout);
crm_trace("Sending %s message to STONITH service, Timeout: %ds", op, timeout);
rc = crm_ipc_send(native->ipc, op_msg, ipc_flags, 1000 * (timeout + 60), &op_reply);
free_xml(op_msg);
if (rc < 0) {
crm_perror(LOG_ERR, "Couldn't perform %s operation (timeout=%ds): %d", op, timeout, rc);
rc = -ECOMM;
goto done;
}
crm_log_xml_trace(op_reply, "Reply");
if (!(call_options & st_opt_sync_call)) {
crm_trace("Async call %d, returning", stonith->call_id);
CRM_CHECK(stonith->call_id != 0, return -EPROTO);
free_xml(op_reply);
return stonith->call_id;
}
rc = pcmk_ok;
crm_element_value_int(op_reply, F_STONITH_CALLID, &reply_id);
if (reply_id == stonith->call_id) {
crm_trace("Syncronous reply %d received", reply_id);
if (crm_element_value_int(op_reply, F_STONITH_RC, &rc) != 0) {
rc = -ENOMSG;
}
if ((call_options & st_opt_discard_reply) || output_data == NULL) {
crm_trace("Discarding reply");
} else {
*output_data = op_reply;
op_reply = NULL; /* Prevent subsequent free */
}
} else if (reply_id <= 0) {
crm_err("Received bad reply: No id set");
crm_log_xml_err(op_reply, "Bad reply");
free_xml(op_reply);
rc = -ENOMSG;
} else {
crm_err("Received bad reply: %d (wanted %d)", reply_id, stonith->call_id);
crm_log_xml_err(op_reply, "Old reply");
free_xml(op_reply);
rc = -ENOMSG;
}
done:
if (crm_ipc_connected(native->ipc) == FALSE) {
crm_err("STONITH disconnected");
stonith->state = stonith_disconnected;
}
free_xml(op_reply);
return rc;
}
/* Not used with mainloop */
bool
stonith_dispatch(stonith_t * st)
{
gboolean stay_connected = TRUE;
stonith_private_t *private = NULL;
CRM_ASSERT(st != NULL);
private = st->private;
while (crm_ipc_ready(private->ipc)) {
if (crm_ipc_read(private->ipc) > 0) {
const char *msg = crm_ipc_buffer(private->ipc);
stonith_dispatch_internal(msg, strlen(msg), st);
}
if (crm_ipc_connected(private->ipc) == FALSE) {
crm_err("Connection closed");
stay_connected = FALSE;
}
}
return stay_connected;
}
int
stonith_dispatch_internal(const char *buffer, ssize_t length, gpointer userdata)
{
const char *type = NULL;
struct notify_blob_s blob;
stonith_t *st = userdata;
stonith_private_t *private = NULL;
CRM_ASSERT(st != NULL);
private = st->private;
blob.stonith = st;
blob.xml = string2xml(buffer);
if (blob.xml == NULL) {
crm_warn("Received a NULL msg from STONITH service: %s.", buffer);
return 0;
}
/* do callbacks */
type = crm_element_value(blob.xml, F_TYPE);
crm_trace("Activating %s callbacks...", type);
if (safe_str_eq(type, T_STONITH_NG)) {
stonith_perform_callback(st, blob.xml, 0, 0);
} else if (safe_str_eq(type, T_STONITH_NOTIFY)) {
g_list_foreach(private->notify_list, stonith_send_notification, &blob);
} else if (safe_str_eq(type, T_STONITH_TIMEOUT_VALUE)) {
int call_id = 0;
int timeout = 0;
crm_element_value_int(blob.xml, F_STONITH_TIMEOUT, &timeout);
crm_element_value_int(blob.xml, F_STONITH_CALLID, &call_id);
update_callback_timeout(call_id, timeout, st);
} else {
crm_err("Unknown message type: %s", type);
crm_log_xml_warn(blob.xml, "BadReply");
}
free_xml(blob.xml);
return 1;
}
static int
stonith_api_free(stonith_t * stonith)
{
int rc = pcmk_ok;
crm_trace("Destroying %p", stonith);
if (stonith->state != stonith_disconnected) {
crm_trace("Disconnecting %p first", stonith);
rc = stonith->cmds->disconnect(stonith);
}
if (stonith->state == stonith_disconnected) {
stonith_private_t *private = stonith->private;
crm_trace("Removing %d callbacks", g_hash_table_size(private->stonith_op_callback_table));
g_hash_table_destroy(private->stonith_op_callback_table);
crm_trace("Destroying %d notification clients", g_list_length(private->notify_list));
g_list_free_full(private->notify_list, free);
free(stonith->private);
free(stonith->cmds);
free(stonith);
} else {
crm_err("Not free'ing active connection: %s (%d)", pcmk_strerror(rc), rc);
}
return rc;
}
void
stonith_api_delete(stonith_t * stonith)
{
crm_trace("Destroying %p", stonith);
if(stonith) {
stonith->cmds->free(stonith);
}
}
stonith_t *
stonith_api_new(void)
{
stonith_t *new_stonith = NULL;
stonith_private_t *private = NULL;
new_stonith = calloc(1, sizeof(stonith_t));
private = calloc(1, sizeof(stonith_private_t));
new_stonith->private = private;
private->stonith_op_callback_table = g_hash_table_new_full(g_direct_hash, g_direct_equal,
NULL, stonith_destroy_op_callback);
private->notify_list = NULL;
new_stonith->call_id = 1;
new_stonith->state = stonith_disconnected;
new_stonith->cmds = calloc(1, sizeof(stonith_api_operations_t));
/* *INDENT-OFF* */
new_stonith->cmds->free = stonith_api_free;
new_stonith->cmds->connect = stonith_api_signon;
new_stonith->cmds->disconnect = stonith_api_signoff;
new_stonith->cmds->list = stonith_api_list;
new_stonith->cmds->monitor = stonith_api_monitor;
new_stonith->cmds->status = stonith_api_status;
new_stonith->cmds->fence = stonith_api_fence;
new_stonith->cmds->confirm = stonith_api_confirm;
new_stonith->cmds->history = stonith_api_history;
new_stonith->cmds->list_agents = stonith_api_device_list;
new_stonith->cmds->metadata = stonith_api_device_metadata;
new_stonith->cmds->query = stonith_api_query;
new_stonith->cmds->remove_device = stonith_api_remove_device;
new_stonith->cmds->register_device = stonith_api_register_device;
new_stonith->cmds->remove_level = stonith_api_remove_level;
new_stonith->cmds->register_level = stonith_api_register_level;
new_stonith->cmds->remove_callback = stonith_api_del_callback;
new_stonith->cmds->register_callback = stonith_api_add_callback;
new_stonith->cmds->remove_notification = stonith_api_del_notification;
new_stonith->cmds->register_notification = stonith_api_add_notification;
/* *INDENT-ON* */
return new_stonith;
}
stonith_key_value_t *
stonith_key_value_add(stonith_key_value_t * head, const char *key, const char *value)
{
stonith_key_value_t *p, *end;
p = calloc(1, sizeof(stonith_key_value_t));
if (key) {
p->key = strdup(key);
}
if (value) {
p->value = strdup(value);
}
end = head;
while (end && end->next) {
end = end->next;
}
if (end) {
end->next = p;
} else {
head = p;
}
return head;
}
void
stonith_key_value_freeall(stonith_key_value_t * head, int keys, int values)
{
stonith_key_value_t *p;
while (head) {
p = head->next;
if (keys) {
free(head->key);
}
if (values) {
free(head->value);
}
free(head);
head = p;
}
}
#define api_log_open() openlog("stonith-api", LOG_CONS | LOG_NDELAY | LOG_PID, LOG_DAEMON)
#define api_log(level, fmt, args...) syslog(level, "%s: "fmt, __FUNCTION__, args)
int
stonith_api_kick(uint32_t nodeid, const char *uname, int timeout, bool off)
{
char *name = NULL;
const char *action = "reboot";
int rc = -EPROTO;
stonith_t *st = NULL;
enum stonith_call_options opts = st_opt_sync_call | st_opt_allow_suicide;
api_log_open();
st = stonith_api_new();
if (st) {
rc = st->cmds->connect(st, "stonith-api", NULL);
if(rc != pcmk_ok) {
api_log(LOG_ERR, "Connection failed, could not kick (%s) node %u/%s : %s (%d)", action, nodeid, uname, pcmk_strerror(rc), rc);
}
}
if (uname != NULL) {
name = strdup(uname);
} else if (nodeid > 0) {
opts |= st_opt_cs_nodeid;
name = crm_itoa(nodeid);
}
if (off) {
action = "off";
}
if (rc == pcmk_ok) {
rc = st->cmds->fence(st, opts, name, action, timeout, 0);
if(rc != pcmk_ok) {
api_log(LOG_ERR, "Could not kick (%s) node %u/%s : %s (%d)", action, nodeid, uname, pcmk_strerror(rc), rc);
} else {
api_log(LOG_NOTICE, "Node %u/%s kicked: %s ", nodeid, uname, action);
}
}
if (st) {
st->cmds->disconnect(st);
stonith_api_delete(st);
}
free(name);
return rc;
}
time_t
stonith_api_time(uint32_t 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(rc != pcmk_ok) {
api_log(LOG_NOTICE, "Connection failed: %s (%d)", pcmk_strerror(rc), rc);
}
}
if (uname != NULL) {
name = strdup(uname);
} else if (nodeid > 0) {
opts |= st_opt_cs_nodeid;
name = crm_itoa(nodeid);
}
if (st && rc == pcmk_ok) {
int entries = 0;
int progress = 0;
int completed = 0;
rc = st->cmds->history(st, opts, name, &history, 120);
for (hp = history; hp; hp = hp->next) {
entries++;
if (in_progress) {
progress++;
if (hp->state != st_done && hp->state != st_failed) {
- progress = time(NULL);
+ when = time(NULL);
}
} else if (hp->state == st_done) {
completed++;
if (hp->completed > when) {
when = hp->completed;
}
}
}
if(rc == pcmk_ok) {
api_log(LOG_INFO, "Found %d entries for %u/%s: %d in progress, %d completed", entries, nodeid, uname, progress, completed);
} else {
api_log(LOG_ERR, "Could not retrieve fence history for %u/%s: %s (%d)", nodeid, uname, pcmk_strerror(rc), rc);
}
}
- if (progress) {
- when = progress;
- }
-
if (st) {
st->cmds->disconnect(st);
stonith_api_delete(st);
}
if(when) {
api_log(LOG_INFO, "Node %u/%s last kicked at: %ld", nodeid, uname, (long int)when);
}
free(name);
return when;
}
#if HAVE_STONITH_STONITH_H
# include <pils/plugin.h>
const char *i_hate_pils(int rc);
const char *
i_hate_pils(int rc)
{
return PIL_strerror(rc);
}
#endif