diff --git a/daemons/execd/pacemaker-execd.c b/daemons/execd/pacemaker-execd.c
index 68daf77bf3..b51890ce01 100644
--- a/daemons/execd/pacemaker-execd.c
+++ b/daemons/execd/pacemaker-execd.c
@@ -1,577 +1,606 @@
/*
* Copyright 2012-2025 the Pacemaker project contributors
*
* The version control history for this file may have further details.
*
* This source code is licensed under the GNU Lesser General Public License
* version 2.1 or later (LGPLv2.1+) WITHOUT ANY WARRANTY.
*/
#include <crm_internal.h>
#include <glib.h>
#include <signal.h>
#include <sys/types.h>
#include <crm/crm.h>
#include <crm/common/xml.h>
#include <crm/services.h>
#include <crm/common/cmdline_internal.h>
#include <crm/common/ipc.h>
#include <crm/common/ipc_internal.h>
#include <crm/common/mainloop.h>
#include <crm/common/output_internal.h>
#include <crm/common/remote_internal.h>
#include <crm/fencing/internal.h> // stonith__api_new()
#include <crm/lrmd_internal.h>
#include "pacemaker-execd.h"
#ifdef PCMK__COMPILE_REMOTE
# define EXECD_TYPE "remote"
# define EXECD_NAME PCMK__SERVER_REMOTED
# define SUMMARY "resource agent executor daemon for Pacemaker Remote nodes"
#else
# define EXECD_TYPE "local"
# define EXECD_NAME PCMK__SERVER_EXECD
# define SUMMARY "resource agent executor daemon for Pacemaker cluster nodes"
#endif
static GMainLoop *mainloop = NULL;
static qb_ipcs_service_t *ipcs = NULL;
static stonith_t *stonith_api = NULL;
int lrmd_call_id = 0;
time_t start_time;
static struct {
gchar **log_files;
#ifdef PCMK__COMPILE_REMOTE
gchar *port;
#endif // PCMK__COMPILE_REMOTE
} options;
#ifdef PCMK__COMPILE_REMOTE
/* whether shutdown request has been sent */
static gboolean shutting_down = FALSE;
#endif
static void exit_executor(void);
static void
stonith_connection_destroy_cb(stonith_t * st, stonith_event_t * e)
{
stonith_api->state = stonith_disconnected;
stonith_connection_failed();
}
stonith_t *
get_stonith_connection(void)
{
if (stonith_api && stonith_api->state == stonith_disconnected) {
stonith__api_free(stonith_api);
stonith_api = NULL;
}
if (stonith_api == NULL) {
int rc = pcmk_ok;
stonith_api = stonith__api_new();
if (stonith_api == NULL) {
crm_err("Could not connect to fencer: API memory allocation failed");
return NULL;
}
rc = stonith__api_connect_retry(stonith_api, crm_system_name, 10);
if (rc != pcmk_rc_ok) {
crm_err("Could not connect to fencer in 10 attempts: %s "
QB_XS " rc=%d", pcmk_rc_str(rc), rc);
stonith__api_free(stonith_api);
stonith_api = NULL;
} else {
stonith_api_operations_t *cmds = stonith_api->cmds;
cmds->register_notification(stonith_api,
PCMK__VALUE_ST_NOTIFY_DISCONNECT,
stonith_connection_destroy_cb);
}
}
return stonith_api;
}
static int32_t
lrmd_ipc_accept(qb_ipcs_connection_t * c, uid_t uid, gid_t gid)
{
crm_trace("Connection %p", c);
if (pcmk__new_client(c, uid, gid) == NULL) {
return -ENOMEM;
}
return 0;
}
static void
lrmd_ipc_created(qb_ipcs_connection_t * c)
{
pcmk__client_t *new_client = pcmk__find_client(c);
crm_trace("Connection %p", c);
pcmk__assert(new_client != NULL);
/* Now that the connection is offically established, alert
* the other clients a new connection exists. */
notify_of_new_client(new_client);
}
static int32_t
lrmd_ipc_dispatch(qb_ipcs_connection_t * c, void *data, size_t size)
{
+ int rc = pcmk_rc_ok;
uint32_t id = 0;
uint32_t flags = 0;
pcmk__client_t *client = pcmk__find_client(c);
- xmlNode *request = pcmk__client_data2xml(client, data, &id, &flags);
+ xmlNode *request = NULL;
CRM_CHECK(client != NULL, crm_err("Invalid client");
return FALSE);
CRM_CHECK(client->id != NULL, crm_err("Invalid client: %p", client);
return FALSE);
+ rc = pcmk__ipc_msg_append(&client->buffer, data);
+
+ if (rc == pcmk_rc_ipc_more) {
+ /* We haven't read the complete message yet, so just return. */
+ return 0;
+
+ } else if (rc == pcmk_rc_ok) {
+ /* We've read the complete message and there's already a header on
+ * the front. Pass it off for processing.
+ */
+ request = pcmk__client_data2xml(client, client->buffer->data, &id, &flags);
+ g_byte_array_free(client->buffer, TRUE);
+ client->buffer = NULL;
+
+ } else {
+ /* Some sort of error occurred reassembling the message. All we can
+ * do is clean up, log an error and return.
+ */
+ crm_err("Error when reading IPC message: %s", pcmk_rc_str(rc));
+
+ if (client->buffer != NULL) {
+ g_byte_array_free(client->buffer, TRUE);
+ client->buffer = NULL;
+ }
+
+ return 0;
+ }
+
CRM_CHECK(flags & crm_ipc_client_response, crm_err("Invalid client request: %p", client);
return FALSE);
if (!request) {
return 0;
}
/* @TODO functionize some of this to reduce duplication with
* lrmd_remote_client_msg()
*/
if (!client->name) {
const char *value = crm_element_value(request,
PCMK__XA_LRMD_CLIENTNAME);
if (value == NULL) {
client->name = pcmk__itoa(pcmk__client_pid(c));
} else {
client->name = pcmk__str_copy(value);
}
}
lrmd_call_id++;
if (lrmd_call_id < 1) {
lrmd_call_id = 1;
}
crm_xml_add(request, PCMK__XA_LRMD_CLIENTID, client->id);
crm_xml_add(request, PCMK__XA_LRMD_CLIENTNAME, client->name);
crm_xml_add_int(request, PCMK__XA_LRMD_CALLID, lrmd_call_id);
process_lrmd_message(client, id, request);
pcmk__xml_free(request);
return 0;
}
/*!
* \internal
* \brief Free a client connection, and exit if appropriate
*
* \param[in,out] client Client connection to free
*/
void
lrmd_client_destroy(pcmk__client_t *client)
{
pcmk__free_client(client);
#ifdef PCMK__COMPILE_REMOTE
/* If we were waiting to shut down, we can now safely do so
* if there are no more proxied IPC providers
*/
if (shutting_down && (ipc_proxy_get_provider() == NULL)) {
exit_executor();
}
#endif
}
static int32_t
lrmd_ipc_closed(qb_ipcs_connection_t * c)
{
pcmk__client_t *client = pcmk__find_client(c);
if (client == NULL) {
return 0;
}
crm_trace("Connection %p", c);
client_disconnect_cleanup(client->id);
#ifdef PCMK__COMPILE_REMOTE
ipc_proxy_remove_provider(client);
#endif
lrmd_client_destroy(client);
return 0;
}
static void
lrmd_ipc_destroy(qb_ipcs_connection_t * c)
{
lrmd_ipc_closed(c);
crm_trace("Connection %p", c);
}
static struct qb_ipcs_service_handlers lrmd_ipc_callbacks = {
.connection_accept = lrmd_ipc_accept,
.connection_created = lrmd_ipc_created,
.msg_process = lrmd_ipc_dispatch,
.connection_closed = lrmd_ipc_closed,
.connection_destroyed = lrmd_ipc_destroy
};
// \return Standard Pacemaker return code
int
lrmd_server_send_reply(pcmk__client_t *client, uint32_t id, xmlNode *reply)
{
crm_trace("Sending reply (%d) to client (%s)", id, client->id);
switch (PCMK__CLIENT_TYPE(client)) {
case pcmk__client_ipc:
return pcmk__ipc_send_xml(client, id, reply, FALSE);
#ifdef PCMK__COMPILE_REMOTE
case pcmk__client_tls:
return lrmd__remote_send_xml(client->remote, reply, id, "reply");
#endif
default:
crm_err("Could not send reply: unknown type for client %s "
QB_XS " flags=%#llx",
pcmk__client_name(client), client->flags);
}
return ENOTCONN;
}
// \return Standard Pacemaker return code
int
lrmd_server_send_notify(pcmk__client_t *client, xmlNode *msg)
{
crm_trace("Sending notification to client (%s)", client->id);
switch (PCMK__CLIENT_TYPE(client)) {
case pcmk__client_ipc:
if (client->ipcs == NULL) {
crm_trace("Could not notify local client: disconnected");
return ENOTCONN;
}
return pcmk__ipc_send_xml(client, 0, msg, crm_ipc_server_event);
#ifdef PCMK__COMPILE_REMOTE
case pcmk__client_tls:
if (client->remote == NULL) {
crm_trace("Could not notify remote client: disconnected");
return ENOTCONN;
} else {
return lrmd__remote_send_xml(client->remote, msg, 0, "notify");
}
#endif
default:
crm_err("Could not notify client %s with unknown transport "
QB_XS " flags=%#llx",
pcmk__client_name(client), client->flags);
}
return ENOTCONN;
}
/*!
* \internal
* \brief Clean up and exit immediately
*/
static void
exit_executor(void)
{
const guint nclients = pcmk__ipc_client_count();
crm_info("Terminating with %d client%s",
nclients, pcmk__plural_s(nclients));
stonith__api_free(stonith_api);
if (ipcs) {
mainloop_del_ipc_server(ipcs);
}
#ifdef PCMK__COMPILE_REMOTE
execd_stop_tls_server();
ipc_proxy_cleanup();
#endif
pcmk__client_cleanup();
if (mainloop) {
lrmd_drain_alerts(mainloop);
}
g_hash_table_destroy(rsc_list);
// @TODO End mainloop instead so all cleanup is done
crm_exit(CRM_EX_OK);
}
/*!
* \internal
* \brief Request cluster shutdown if appropriate, otherwise exit immediately
*
* \param[in] nsig Signal that caused invocation (ignored)
*/
static void
lrmd_shutdown(int nsig)
{
#ifdef PCMK__COMPILE_REMOTE
pcmk__client_t *ipc_proxy = ipc_proxy_get_provider();
/* If there are active proxied IPC providers, then we may be running
* resources, so notify the cluster that we wish to shut down.
*/
if (ipc_proxy) {
if (shutting_down) {
crm_notice("Waiting for cluster to stop resources before exiting");
return;
}
crm_info("Sending shutdown request to cluster");
if (ipc_proxy_shutdown_req(ipc_proxy) < 0) {
crm_crit("Shutdown request failed, exiting immediately");
} else {
/* We requested a shutdown. Now, we need to wait for an
* acknowledgement from the proxy host, then wait for all proxy
* hosts to disconnect (which ensures that all resources have been
* stopped).
*/
shutting_down = TRUE;
/* Stop accepting new proxy connections */
execd_stop_tls_server();
/* Currently, we let the OS kill us if the clients don't disconnect
* in a reasonable time. We could instead set a long timer here
* (shorter than what the OS is likely to use) and exit immediately
* if it pops.
*/
return;
}
}
#endif
exit_executor();
}
/*!
* \internal
* \brief Log a shutdown acknowledgment
*/
void
handle_shutdown_ack(void)
{
#ifdef PCMK__COMPILE_REMOTE
if (shutting_down) {
crm_info("IPC proxy provider acknowledged shutdown request");
return;
}
#endif
crm_debug("Ignoring unexpected shutdown acknowledgment "
"from IPC proxy provider");
}
/*!
* \internal
* \brief Handle rejection of shutdown request
*/
void
handle_shutdown_nack(void)
{
#ifdef PCMK__COMPILE_REMOTE
if (shutting_down) {
crm_info("Exiting immediately after IPC proxy provider "
"indicated no resources will be stopped");
exit_executor();
return;
}
#endif
crm_debug("Ignoring unexpected shutdown rejection from IPC proxy provider");
}
static GOptionEntry entries[] = {
{ "logfile", 'l', G_OPTION_FLAG_NONE, G_OPTION_ARG_FILENAME_ARRAY,
&options.log_files, "Send logs to the additional named logfile", NULL },
#ifdef PCMK__COMPILE_REMOTE
{ "port", 'p', G_OPTION_FLAG_NONE, G_OPTION_ARG_STRING, &options.port,
"Port to listen on (defaults to " G_STRINGIFY(DEFAULT_REMOTE_PORT) ")", NULL },
#endif // PCMK__COMPILE_REMOTE
{ NULL }
};
static pcmk__supported_format_t formats[] = {
PCMK__SUPPORTED_FORMAT_NONE,
PCMK__SUPPORTED_FORMAT_TEXT,
PCMK__SUPPORTED_FORMAT_XML,
{ NULL, NULL, NULL }
};
static GOptionContext *
build_arg_context(pcmk__common_args_t *args, GOptionGroup **group)
{
GOptionContext *context = NULL;
context = pcmk__build_arg_context(args, "text (default), xml", group, NULL);
pcmk__add_main_args(context, entries);
return context;
}
int
main(int argc, char **argv, char **envp)
{
int rc = pcmk_rc_ok;
crm_exit_t exit_code = CRM_EX_OK;
const char *option = NULL;
pcmk__output_t *out = NULL;
GError *error = NULL;
GOptionGroup *output_group = NULL;
pcmk__common_args_t *args = NULL;
gchar **processed_args = NULL;
GOptionContext *context = NULL;
#ifdef PCMK__COMPILE_REMOTE
// If necessary, create PID 1 now before any file descriptors are opened
remoted_spawn_pidone(argc, argv, envp);
#endif
args = pcmk__new_common_args(SUMMARY);
#ifdef PCMK__COMPILE_REMOTE
processed_args = pcmk__cmdline_preproc(argv, "lp");
#else
processed_args = pcmk__cmdline_preproc(argv, "l");
#endif // PCMK__COMPILE_REMOTE
context = build_arg_context(args, &output_group);
crm_log_preinit(EXECD_NAME, argc, argv);
pcmk__register_formats(output_group, formats);
if (!g_option_context_parse_strv(context, &processed_args, &error)) {
exit_code = CRM_EX_USAGE;
goto done;
}
rc = pcmk__output_new(&out, args->output_ty, args->output_dest, argv);
if (rc != pcmk_rc_ok) {
exit_code = CRM_EX_ERROR;
g_set_error(&error, PCMK__EXITC_ERROR, exit_code,
"Error creating output format %s: %s",
args->output_ty, pcmk_rc_str(rc));
goto done;
}
if (args->version) {
out->version(out, false);
goto done;
}
// Open additional log files
if (options.log_files != NULL) {
for (gchar **fname = options.log_files; *fname != NULL; fname++) {
rc = pcmk__add_logfile(*fname);
if (rc != pcmk_rc_ok) {
out->err(out, "Logging to %s is disabled: %s",
*fname, pcmk_rc_str(rc));
}
}
}
pcmk__cli_init_logging(EXECD_NAME, args->verbosity);
crm_log_init(NULL, LOG_INFO, TRUE, FALSE, argc, argv, FALSE);
// ocf_log() (in resource-agents) uses the capitalized env options below
option = pcmk__env_option(PCMK__ENV_LOGFACILITY);
if (!pcmk__str_eq(option, PCMK_VALUE_NONE,
pcmk__str_casei|pcmk__str_null_matches)
&& !pcmk__str_eq(option, "/dev/null", pcmk__str_none)) {
pcmk__set_env_option("LOGFACILITY", option, true);
}
option = pcmk__env_option(PCMK__ENV_LOGFILE);
if (!pcmk__str_eq(option, PCMK_VALUE_NONE,
pcmk__str_casei|pcmk__str_null_matches)) {
pcmk__set_env_option("LOGFILE", option, true);
if (pcmk__env_option_enabled(crm_system_name, PCMK__ENV_DEBUG)) {
pcmk__set_env_option("DEBUGLOG", option, true);
}
}
#ifdef PCMK__COMPILE_REMOTE
if (options.port != NULL) {
pcmk__set_env_option(PCMK__ENV_REMOTE_PORT, options.port, false);
}
#endif // PCMK__COMPILE_REMOTE
start_time = time(NULL);
crm_notice("Starting Pacemaker " EXECD_TYPE " executor");
/* The presence of this variable allegedly controls whether child
* processes like httpd will try and use Systemd's sd_notify
* API
*/
unsetenv("NOTIFY_SOCKET");
{
// Temporary directory for resource agent use (leave owned by root)
int rc = pcmk__build_path(PCMK__OCF_TMP_DIR, 0755);
if (rc != pcmk_rc_ok) {
crm_warn("Could not create resource agent temporary directory "
PCMK__OCF_TMP_DIR ": %s", pcmk_rc_str(rc));
}
}
rsc_list = pcmk__strkey_table(NULL, free_rsc);
ipcs = mainloop_add_ipc_server(CRM_SYSTEM_LRMD, QB_IPC_SHM, &lrmd_ipc_callbacks);
if (ipcs == NULL) {
crm_err("Failed to create IPC server: shutting down and inhibiting respawn");
exit_code = CRM_EX_FATAL;
goto done;
}
#ifdef PCMK__COMPILE_REMOTE
if (lrmd_init_remote_tls_server() < 0) {
crm_err("Failed to create TLS listener: shutting down and staying down");
exit_code = CRM_EX_FATAL;
goto done;
}
ipc_proxy_init();
#endif
mainloop_add_signal(SIGTERM, lrmd_shutdown);
mainloop = g_main_loop_new(NULL, FALSE);
crm_notice("Pacemaker " EXECD_TYPE " executor successfully started and accepting connections");
crm_notice("OCF resource agent search path is %s", PCMK__OCF_RA_PATH);
g_main_loop_run(mainloop);
/* should never get here */
exit_executor();
done:
g_strfreev(options.log_files);
#ifdef PCMK__COMPILE_REMOTE
g_free(options.port);
#endif // PCMK__COMPILE_REMOTE
g_strfreev(processed_args);
pcmk__free_arg_context(context);
pcmk__output_and_clear_error(&error, out);
if (out != NULL) {
out->finish(out, exit_code, true, NULL);
pcmk__output_free(out);
}
pcmk__unregister_formats();
crm_exit(exit_code);
}
diff --git a/daemons/execd/remoted_proxy.c b/daemons/execd/remoted_proxy.c
index 9083a9d9cc..cdae7ef1bd 100644
--- a/daemons/execd/remoted_proxy.c
+++ b/daemons/execd/remoted_proxy.c
@@ -1,481 +1,508 @@
/*
- * Copyright 2012-2024 the Pacemaker project contributors
+ * Copyright 2012-2025 the Pacemaker project contributors
*
* The version control history for this file may have further details.
*
* This source code is licensed under the GNU Lesser General Public License
* version 2.1 or later (LGPLv2.1+) WITHOUT ANY WARRANTY.
*/
#include <crm_internal.h>
#include <glib.h>
#include <unistd.h>
#include "pacemaker-execd.h"
#include <crm/crm.h>
#include <crm/common/xml.h>
#include <crm/services.h>
#include <crm/common/mainloop.h>
#include <crm/common/ipc.h>
#include <crm/common/ipc_internal.h>
#include <crm/cib/internal.h>
#include <crm/fencing/internal.h>
static qb_ipcs_service_t *cib_ro = NULL;
static qb_ipcs_service_t *cib_rw = NULL;
static qb_ipcs_service_t *cib_shm = NULL;
static qb_ipcs_service_t *attrd_ipcs = NULL;
static qb_ipcs_service_t *crmd_ipcs = NULL;
static qb_ipcs_service_t *stonith_ipcs = NULL;
static qb_ipcs_service_t *pacemakerd_ipcs = NULL;
// An IPC provider is a cluster node controller connecting as a client
static GList *ipc_providers = NULL;
/* ipc clients == things like cibadmin, crm_resource, connecting locally
*
* @TODO This should be unnecessary (pcmk__foreach_ipc_client() should be
* sufficient)
*/
static GHashTable *ipc_clients = NULL;
/*!
* \internal
* \brief Get an IPC proxy provider
*
* \return Pointer to a provider if one exists, NULL otherwise
*
* \note Grab the first provider, which is the most recent connection. That way,
* if we haven't yet timed out an old, failed connection, we don't try to
* use it.
*/
pcmk__client_t *
ipc_proxy_get_provider(void)
{
return ipc_providers? (pcmk__client_t *) (ipc_providers->data) : NULL;
}
/*!
* \internal
* \brief Accept a client connection on a proxy IPC server
*
* \param[in] c Client's IPC connection
* \param[in] uid Client's user ID
* \param[in] gid Client's group ID
* \param[in] ipc_channel Name of IPC server to proxy
*
* \return pcmk_ok on success, -errno on error
*/
static int32_t
ipc_proxy_accept(qb_ipcs_connection_t * c, uid_t uid, gid_t gid, const char *ipc_channel)
{
pcmk__client_t *client;
pcmk__client_t *ipc_proxy = ipc_proxy_get_provider();
xmlNode *msg;
if (ipc_proxy == NULL) {
crm_warn("Cannot proxy IPC connection from uid %d gid %d to %s "
"because not connected to cluster", uid, gid, ipc_channel);
return -EREMOTEIO;
}
/* This new client is a local IPC client on a Pacemaker Remote controlled
* node, needing to access cluster node IPC services.
*/
client = pcmk__new_client(c, uid, gid);
if (client == NULL) {
return -ENOMEM;
}
/* This ipc client is bound to a single ipc provider. If the
* provider goes away, this client is disconnected */
client->userdata = pcmk__str_copy(ipc_proxy->id);
client->name = crm_strdup_printf("proxy-%s-%d-%.8s", ipc_channel, client->pid, client->id);
/* Allow remote executor to distinguish between proxied local clients and
* actual executor API clients
*/
pcmk__set_client_flags(client, pcmk__client_to_proxy);
g_hash_table_insert(ipc_clients, client->id, client);
msg = pcmk__xe_create(NULL, PCMK__XE_LRMD_IPC_PROXY);
crm_xml_add(msg, PCMK__XA_LRMD_IPC_OP, LRMD_IPC_OP_NEW);
crm_xml_add(msg, PCMK__XA_LRMD_IPC_SERVER, ipc_channel);
crm_xml_add(msg, PCMK__XA_LRMD_IPC_SESSION, client->id);
lrmd_server_send_notify(ipc_proxy, msg);
pcmk__xml_free(msg);
crm_debug("Accepted IPC proxy connection (session ID %s) "
"from uid %d gid %d on channel %s",
client->id, uid, gid, ipc_channel);
return 0;
}
static int32_t
crmd_proxy_accept(qb_ipcs_connection_t * c, uid_t uid, gid_t gid)
{
return ipc_proxy_accept(c, uid, gid, CRM_SYSTEM_CRMD);
}
static int32_t
attrd_proxy_accept(qb_ipcs_connection_t * c, uid_t uid, gid_t gid)
{
return ipc_proxy_accept(c, uid, gid, PCMK__VALUE_ATTRD);
}
static int32_t
stonith_proxy_accept(qb_ipcs_connection_t * c, uid_t uid, gid_t gid)
{
return ipc_proxy_accept(c, uid, gid, "stonith-ng");
}
static int32_t
pacemakerd_proxy_accept(qb_ipcs_connection_t * c, uid_t uid, gid_t gid)
{
return -EREMOTEIO;
}
static int32_t
cib_proxy_accept_rw(qb_ipcs_connection_t * c, uid_t uid, gid_t gid)
{
return ipc_proxy_accept(c, uid, gid, PCMK__SERVER_BASED_RW);
}
static int32_t
cib_proxy_accept_ro(qb_ipcs_connection_t * c, uid_t uid, gid_t gid)
{
return ipc_proxy_accept(c, uid, gid, PCMK__SERVER_BASED_RO);
}
void
ipc_proxy_forward_client(pcmk__client_t *ipc_proxy, xmlNode *xml)
{
const char *session = crm_element_value(xml, PCMK__XA_LRMD_IPC_SESSION);
const char *msg_type = crm_element_value(xml, PCMK__XA_LRMD_IPC_OP);
xmlNode *wrapper = pcmk__xe_first_child(xml, PCMK__XE_LRMD_IPC_MSG, NULL,
NULL);
xmlNode *msg = pcmk__xe_first_child(wrapper, NULL, NULL, NULL);
pcmk__client_t *ipc_client;
int rc = pcmk_rc_ok;
if (pcmk__str_eq(msg_type, LRMD_IPC_OP_SHUTDOWN_ACK, pcmk__str_casei)) {
handle_shutdown_ack();
return;
}
if (pcmk__str_eq(msg_type, LRMD_IPC_OP_SHUTDOWN_NACK, pcmk__str_casei)) {
handle_shutdown_nack();
return;
}
ipc_client = pcmk__find_client_by_id(session);
if (ipc_client == NULL) {
xmlNode *msg = pcmk__xe_create(NULL, PCMK__XE_LRMD_IPC_PROXY);
crm_xml_add(msg, PCMK__XA_LRMD_IPC_OP, LRMD_IPC_OP_DESTROY);
crm_xml_add(msg, PCMK__XA_LRMD_IPC_SESSION, session);
lrmd_server_send_notify(ipc_proxy, msg);
pcmk__xml_free(msg);
return;
}
/* This is an event or response from the ipc provider
* going to the local ipc client.
*
* Looking at the chain of events.
*
* -----remote node----------------|---- cluster node ------
* ipc_client <--1--> this code
* <--2--> pacemaker-controld:remote_proxy_cb/remote_proxy_relay_event()
* <--3--> ipc server
*
* This function is receiving a msg from connection 2
* and forwarding it to connection 1.
*/
if (pcmk__str_eq(msg_type, LRMD_IPC_OP_EVENT, pcmk__str_casei)) {
crm_trace("Sending event to %s", ipc_client->id);
rc = pcmk__ipc_send_xml(ipc_client, 0, msg, crm_ipc_server_event);
} else if (pcmk__str_eq(msg_type, LRMD_IPC_OP_RESPONSE, pcmk__str_casei)) {
int msg_id = 0;
crm_element_value_int(xml, PCMK__XA_LRMD_IPC_MSG_ID, &msg_id);
crm_trace("Sending response to %d - %s", ipc_client->request_id, ipc_client->id);
rc = pcmk__ipc_send_xml(ipc_client, msg_id, msg, FALSE);
CRM_LOG_ASSERT(msg_id == ipc_client->request_id);
ipc_client->request_id = 0;
} else if (pcmk__str_eq(msg_type, LRMD_IPC_OP_DESTROY, pcmk__str_casei)) {
qb_ipcs_disconnect(ipc_client->ipcs);
} else {
crm_err("Unknown ipc proxy msg type %s" , msg_type);
}
if (rc != pcmk_rc_ok) {
crm_warn("Could not proxy IPC to client %s: %s " QB_XS " rc=%d",
ipc_client->id, pcmk_rc_str(rc), rc);
}
}
static int32_t
ipc_proxy_dispatch(qb_ipcs_connection_t * c, void *data, size_t size)
{
+ int rc = pcmk_rc_ok;
uint32_t id = 0;
uint32_t flags = 0;
pcmk__client_t *client = pcmk__find_client(c);
pcmk__client_t *ipc_proxy = pcmk__find_client_by_id(client->userdata);
xmlNode *wrapper = NULL;
xmlNode *request = NULL;
xmlNode *msg = NULL;
if (!ipc_proxy) {
qb_ipcs_disconnect(client->ipcs);
return 0;
}
/* This is a request from the local ipc client going
* to the ipc provider.
*
* Looking at the chain of events.
*
* -----remote node----------------|---- cluster node ------
* ipc_client <--1--> this code
* <--2--> pacemaker-controld:remote_proxy_dispatch_internal()
* <--3--> ipc server
*
* This function is receiving a request from connection
* 1 and forwarding it to connection 2.
*/
- request = pcmk__client_data2xml(client, data, &id, &flags);
+ rc = pcmk__ipc_msg_append(&client->buffer, data);
+
+ if (rc == pcmk_rc_ipc_more) {
+ /* We haven't read the complete message yet, so just return. */
+ return 0;
+
+ } else if (rc == pcmk_rc_ok) {
+ /* We've read the complete message and there's already a header on
+ * the front. Pass it off for processing.
+ */
+ request = pcmk__client_data2xml(client, client->buffer->data, &id, &flags);
+ g_byte_array_free(client->buffer, TRUE);
+ client->buffer = NULL;
+
+ } else {
+ /* Some sort of error occurred reassembling the message. All we can
+ * do is clean up, log an error and return.
+ */
+ crm_err("Error when reading IPC message: %s", pcmk_rc_str(rc));
+
+ if (client->buffer != NULL) {
+ g_byte_array_free(client->buffer, TRUE);
+ client->buffer = NULL;
+ }
+
+ return 0;
+ }
if (!request) {
return 0;
}
CRM_CHECK(client != NULL, crm_err("Invalid client");
pcmk__xml_free(request); return FALSE);
CRM_CHECK(client->id != NULL, crm_err("Invalid client: %p", client);
pcmk__xml_free(request); return FALSE);
/* This ensures that synced request/responses happen over the event channel
* in the controller, allowing the controller to process the messages async.
*/
pcmk__set_ipc_flags(flags, pcmk__client_name(client), crm_ipc_proxied);
client->request_id = id;
msg = pcmk__xe_create(NULL, PCMK__XE_LRMD_IPC_PROXY);
crm_xml_add(msg, PCMK__XA_LRMD_IPC_OP, LRMD_IPC_OP_REQUEST);
crm_xml_add(msg, PCMK__XA_LRMD_IPC_SESSION, client->id);
crm_xml_add(msg, PCMK__XA_LRMD_IPC_CLIENT, pcmk__client_name(client));
crm_xml_add(msg, PCMK__XA_LRMD_IPC_USER, client->user);
crm_xml_add_int(msg, PCMK__XA_LRMD_IPC_MSG_ID, id);
crm_xml_add_int(msg, PCMK__XA_LRMD_IPC_MSG_FLAGS, flags);
wrapper = pcmk__xe_create(msg, PCMK__XE_LRMD_IPC_MSG);
pcmk__xml_copy(wrapper, request);
lrmd_server_send_notify(ipc_proxy, msg);
pcmk__xml_free(request);
pcmk__xml_free(msg);
return 0;
}
/*!
* \internal
* \brief Notify a proxy provider that we wish to shut down
*
* \param[in,out] ipc_proxy IPC client connection to proxy provider
*
* \return 0 on success, -1 on error
*/
int
ipc_proxy_shutdown_req(pcmk__client_t *ipc_proxy)
{
xmlNode *msg = pcmk__xe_create(NULL, PCMK__XE_LRMD_IPC_PROXY);
int rc;
crm_xml_add(msg, PCMK__XA_LRMD_IPC_OP, LRMD_IPC_OP_SHUTDOWN_REQ);
/* We don't really have a session, but the controller needs this attribute
* to recognize this as proxy communication.
*/
crm_xml_add(msg, PCMK__XA_LRMD_IPC_SESSION, "0");
rc = (lrmd_server_send_notify(ipc_proxy, msg) != pcmk_rc_ok)? -1 : 0;
pcmk__xml_free(msg);
return rc;
}
static int32_t
ipc_proxy_closed(qb_ipcs_connection_t * c)
{
pcmk__client_t *client = pcmk__find_client(c);
pcmk__client_t *ipc_proxy;
if (client == NULL) {
return 0;
}
ipc_proxy = pcmk__find_client_by_id(client->userdata);
crm_trace("Connection %p", c);
if (ipc_proxy) {
xmlNode *msg = pcmk__xe_create(NULL, PCMK__XE_LRMD_IPC_PROXY);
crm_xml_add(msg, PCMK__XA_LRMD_IPC_OP, LRMD_IPC_OP_DESTROY);
crm_xml_add(msg, PCMK__XA_LRMD_IPC_SESSION, client->id);
lrmd_server_send_notify(ipc_proxy, msg);
pcmk__xml_free(msg);
}
g_hash_table_remove(ipc_clients, client->id);
free(client->userdata);
client->userdata = NULL;
pcmk__free_client(client);
return 0;
}
static void
ipc_proxy_destroy(qb_ipcs_connection_t * c)
{
crm_trace("Connection %p", c);
ipc_proxy_closed(c);
}
static struct qb_ipcs_service_handlers crmd_proxy_callbacks = {
.connection_accept = crmd_proxy_accept,
.connection_created = NULL,
.msg_process = ipc_proxy_dispatch,
.connection_closed = ipc_proxy_closed,
.connection_destroyed = ipc_proxy_destroy
};
static struct qb_ipcs_service_handlers attrd_proxy_callbacks = {
.connection_accept = attrd_proxy_accept,
.connection_created = NULL,
.msg_process = ipc_proxy_dispatch,
.connection_closed = ipc_proxy_closed,
.connection_destroyed = ipc_proxy_destroy
};
static struct qb_ipcs_service_handlers stonith_proxy_callbacks = {
.connection_accept = stonith_proxy_accept,
.connection_created = NULL,
.msg_process = ipc_proxy_dispatch,
.connection_closed = ipc_proxy_closed,
.connection_destroyed = ipc_proxy_destroy
};
static struct qb_ipcs_service_handlers pacemakerd_proxy_callbacks = {
.connection_accept = pacemakerd_proxy_accept,
.connection_created = NULL,
.msg_process = NULL,
.connection_closed = NULL,
.connection_destroyed = NULL
};
static struct qb_ipcs_service_handlers cib_proxy_callbacks_ro = {
.connection_accept = cib_proxy_accept_ro,
.connection_created = NULL,
.msg_process = ipc_proxy_dispatch,
.connection_closed = ipc_proxy_closed,
.connection_destroyed = ipc_proxy_destroy
};
static struct qb_ipcs_service_handlers cib_proxy_callbacks_rw = {
.connection_accept = cib_proxy_accept_rw,
.connection_created = NULL,
.msg_process = ipc_proxy_dispatch,
.connection_closed = ipc_proxy_closed,
.connection_destroyed = ipc_proxy_destroy
};
void
ipc_proxy_add_provider(pcmk__client_t *ipc_proxy)
{
// Prepending ensures the most recent connection is always first
ipc_providers = g_list_prepend(ipc_providers, ipc_proxy);
}
void
ipc_proxy_remove_provider(pcmk__client_t *ipc_proxy)
{
GHashTableIter iter;
pcmk__client_t *ipc_client = NULL;
char *key = NULL;
GList *remove_these = NULL;
GList *gIter = NULL;
ipc_providers = g_list_remove(ipc_providers, ipc_proxy);
g_hash_table_iter_init(&iter, ipc_clients);
while (g_hash_table_iter_next(&iter, (gpointer *) & key, (gpointer *) & ipc_client)) {
const char *proxy_id = ipc_client->userdata;
if (pcmk__str_eq(proxy_id, ipc_proxy->id, pcmk__str_casei)) {
crm_info("ipc proxy connection for client %s pid %d destroyed because cluster node disconnected.",
ipc_client->id, ipc_client->pid);
/* we can't remove during the iteration, so copy items
* to a list we can destroy later */
remove_these = g_list_append(remove_these, ipc_client);
}
}
for (gIter = remove_these; gIter != NULL; gIter = gIter->next) {
ipc_client = gIter->data;
// Disconnection callback will free the client here
qb_ipcs_disconnect(ipc_client->ipcs);
}
/* just frees the list, not the elements in the list */
g_list_free(remove_these);
}
void
ipc_proxy_init(void)
{
ipc_clients = pcmk__strkey_table(NULL, NULL);
pcmk__serve_based_ipc(&cib_ro, &cib_rw, &cib_shm, &cib_proxy_callbacks_ro,
&cib_proxy_callbacks_rw);
pcmk__serve_attrd_ipc(&attrd_ipcs, &attrd_proxy_callbacks);
pcmk__serve_fenced_ipc(&stonith_ipcs, &stonith_proxy_callbacks);
pcmk__serve_pacemakerd_ipc(&pacemakerd_ipcs, &pacemakerd_proxy_callbacks);
crmd_ipcs = pcmk__serve_controld_ipc(&crmd_proxy_callbacks);
if (crmd_ipcs == NULL) {
crm_err("Failed to create controller: exiting and inhibiting respawn");
crm_warn("Verify pacemaker and pacemaker_remote are not both enabled");
crm_exit(CRM_EX_FATAL);
}
}
void
ipc_proxy_cleanup(void)
{
if (ipc_providers) {
g_list_free(ipc_providers);
ipc_providers = NULL;
}
if (ipc_clients) {
g_hash_table_destroy(ipc_clients);
ipc_clients = NULL;
}
pcmk__stop_based_ipc(cib_ro, cib_rw, cib_shm);
qb_ipcs_destroy(attrd_ipcs);
qb_ipcs_destroy(stonith_ipcs);
qb_ipcs_destroy(pacemakerd_ipcs);
qb_ipcs_destroy(crmd_ipcs);
cib_ro = NULL;
cib_rw = NULL;
cib_shm = NULL;
}