diff --git a/fencing/commands.c b/fencing/commands.c index 487aab4893..1699c5f446 100644 --- a/fencing/commands.c +++ b/fencing/commands.c @@ -1,1474 +1,1473 @@ /* * Copyright (C) 2009 Andrew Beekhof * * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include GHashTable *device_list = NULL; GHashTable *topology = NULL; GList *cmd_list = NULL; static int active_children = 0; static gboolean stonith_device_dispatch(gpointer user_data); static void st_child_done(GPid pid, gint status, gpointer user_data); static int get_action_timeout(stonith_device_t *device, const char *action, int default_timeout) { char buffer[512] = { 0, }; char *value = NULL; CRM_CHECK(action != NULL, return default_timeout); if (!device->params) { return default_timeout; } snprintf(buffer, sizeof(buffer) - 1, "pcmk_%s_timeout", action); value = g_hash_table_lookup(device->params, buffer); if (!value) { return default_timeout; } return atoi(value); } static void free_async_command(async_command_t *cmd) { if (!cmd) { return; } cmd_list = g_list_remove(cmd_list, cmd); g_list_free(cmd->device_list); free(cmd->device); free(cmd->action); free(cmd->victim); free(cmd->remote); free(cmd->client); free(cmd->client_name); free(cmd->origin); free(cmd->op); free(cmd); } static async_command_t *create_async_command(xmlNode *msg) { async_command_t *cmd = NULL; xmlNode *op = get_xpath_object("//@"F_STONITH_ACTION, msg, LOG_ERR); const char *action = crm_element_value(op, F_STONITH_ACTION); CRM_CHECK(action != NULL, crm_log_xml_warn(msg, "NoAction"); return NULL); crm_log_xml_trace(msg, "Command"); cmd = calloc(1, sizeof(async_command_t)); crm_element_value_int(msg, F_STONITH_CALLID, &(cmd->id)); crm_element_value_int(msg, F_STONITH_CALLOPTS, &(cmd->options)); crm_element_value_int(msg, F_STONITH_TIMEOUT, &(cmd->default_timeout)); cmd->timeout = cmd->default_timeout; cmd->origin = crm_element_value_copy(msg, F_ORIG); cmd->remote = crm_element_value_copy(msg, F_STONITH_REMOTE); cmd->client = crm_element_value_copy(msg, F_STONITH_CLIENTID); cmd->client_name = crm_element_value_copy(msg, F_STONITH_CLIENTNAME); cmd->op = crm_element_value_copy(msg, F_STONITH_OPERATION); cmd->action = strdup(action); cmd->victim = crm_element_value_copy(op, F_STONITH_TARGET); cmd->mode = crm_element_value_copy(op, F_STONITH_MODE); cmd->device = crm_element_value_copy(op, F_STONITH_DEVICE); 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")); cmd_list = g_list_append(cmd_list, cmd); return cmd; } static int stonith_manual_ack(xmlNode *msg, remote_fencing_op_t *op) { async_command_t *cmd = create_async_command(msg); xmlNode *dev = get_xpath_object("//@"F_STONITH_TARGET, msg, LOG_ERR); if(cmd == NULL) { return -EINVAL; } cmd->device = strdup("manual_ack"); cmd->remote = strdup(op->id); crm_notice("Injecting manual confirmation that %s is safely off/down", crm_element_value(dev, F_STONITH_TARGET)); st_child_done(0, 0, cmd); return pcmk_ok; } static gboolean stonith_device_execute(stonith_device_t *device) { int rc = 0; int exec_rc = 0; async_command_t *cmd = NULL; 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; } 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 now running with pid=%d, timeout=%dms", cmd->action, cmd->victim?" for node ":"", cmd->victim?cmd->victim:"", device->id, exec_rc, cmd->timeout); device->active_pid = exec_rc; } else { crm_warn("Operation %s%s%s on %s failed (%d/%d)", cmd->action, cmd->victim?" for node ":"", cmd->victim?cmd->victim:"", device->id, exec_rc, rc); st_child_done(0, rc<0?rc:exec_rc, cmd); } return TRUE; } static gboolean stonith_device_dispatch(gpointer user_data) { return stonith_device_execute(user_data); } static void schedule_stonith_command(async_command_t *cmd, stonith_device_t *device) { CRM_CHECK(cmd != NULL, return); CRM_CHECK(device != NULL, return); if (cmd->device) { free(cmd->device); } cmd->device = strdup(device->id); cmd->timeout = get_action_timeout(device, cmd->action, cmd->default_timeout); crm_debug("Scheduling %s on %s for %s (timeout=%dms)", cmd->action, device->id, cmd->remote?cmd->remote:cmd->client, cmd->timeout); device->pending_ops = g_list_append(device->pending_ops, cmd); mainloop_set_trigger(device->work); } void free_device(gpointer data) { GListPtr gIter = NULL; stonith_device_t *device = data; g_hash_table_destroy(device->params); g_hash_table_destroy(device->aliases); for(gIter = device->pending_ops; gIter != NULL; gIter = gIter->next) { async_command_t *cmd = gIter->data; crm_warn("Removal of device '%s' purged operation %s", device->id, cmd->action); st_child_done(0, -ENODEV, cmd); free_async_command(cmd); } g_list_free(device->pending_ops); g_list_free_full(device->targets, free); free(device->namespace); free(device->agent); free(device->id); free(device); } static GHashTable *build_port_aliases(const char *hostmap, GListPtr *targets) { char *name = NULL; int last = 0, lpc = 0, max = 0, added = 0; GHashTable *aliases = g_hash_table_new_full(crm_str_hash, g_str_equal, g_hash_destroy_str, g_hash_destroy_str); if(hostmap == NULL) { return aliases; } max = strlen(hostmap); for(; lpc <= max; lpc++) { switch(hostmap[lpc]) { /* Assignment chars */ case '=': case ':': if(lpc > last) { free(name); name = calloc(1, 1 + lpc - last); memcpy(name, hostmap + last, lpc - last); } last = lpc + 1; break; /* Delimeter chars */ /* case ',': Potentially used to specify multiple ports */ case 0: case ';': case ' ': case '\t': if(name) { char *value = NULL; value = calloc(1, 1 + lpc - last); memcpy(value, hostmap + last, lpc - last); crm_debug("Adding alias '%s'='%s'", name, value); g_hash_table_replace(aliases, name, value); if(targets) { *targets = g_list_append(*targets, strdup(value)); } value=NULL; name=NULL; added++; } else if(lpc > last) { crm_debug("Parse error at offset %d near '%s'", lpc-last, hostmap+last); } last = lpc + 1; break; } if(hostmap[lpc] == 0) { break; } } if(added == 0) { crm_info("No host mappings detected in '%s'", hostmap); } free(name); return aliases; } static void parse_host_line(const char *line, GListPtr *output) { int lpc = 0; int max = 0; int last = 0; if(line) { max = strlen(line); } else { return; } /* Check for any complaints about additional parameters that the device doesn't understand */ if(strstr(line, "invalid") || strstr(line, "variable")) { crm_debug("Skipping: %s", line); return; } crm_trace("Processing: %s", line); /* Skip initial whitespace */ for(lpc = 0; lpc <= max && isspace(line[lpc]); lpc++) { last = lpc+1; } /* Now the actual content */ for(lpc = 0; lpc <= max; lpc++) { gboolean a_space = isspace(line[lpc]); if(a_space && lpc < max && isspace(line[lpc+1])) { /* fast-forward to the end of the spaces */ } else if(a_space || line[lpc] == ',' || line[lpc] == 0) { int rc = 1; char *entry = NULL; if(lpc != last) { entry = calloc(1, 1 + lpc - last); rc = sscanf(line+last, "%[a-zA-Z0-9_-.]", entry); } if(entry == NULL) { /* Skip */ } else if(rc != 1) { crm_warn("Could not parse (%d %d): %s", last, lpc, line+last); } else if(safe_str_neq(entry, "on") && safe_str_neq(entry, "off")) { crm_trace("Adding '%s'", entry); *output = g_list_append(*output, entry); entry = NULL; } free(entry); last = lpc + 1; } } } static GListPtr parse_host_list(const char *hosts) { int lpc = 0; int max = 0; int last = 0; GListPtr output = NULL; if(hosts == NULL) { return output; } max = strlen(hosts); for(lpc = 0; lpc <= max; lpc++) { if(hosts[lpc] == '\n' || hosts[lpc] == 0) { char *line = NULL; line = calloc(1, 2 + lpc - last); snprintf(line, 1 + lpc - last, "%s", hosts+last); parse_host_line(line, &output); free(line); last = lpc + 1; } } return output; } static stonith_device_t *build_device_from_xml(xmlNode *msg) { xmlNode *dev = get_xpath_object("//"F_STONITH_DEVICE, msg, LOG_ERR); stonith_device_t *device = NULL; device = calloc(1, sizeof(stonith_device_t)); device->id = crm_element_value_copy(dev, XML_ATTR_ID); device->agent = crm_element_value_copy(dev, "agent"); device->namespace = crm_element_value_copy(dev, "namespace"); device->params = xml2list(dev); device->work = mainloop_add_trigger(G_PRIORITY_HIGH, stonith_device_dispatch, device); /* TODO: Hook up priority */ return device; } static const char * target_list_type(stonith_device_t *dev) { const char *check_type = NULL; check_type = g_hash_table_lookup(dev->params, STONITH_ATTR_HOSTCHECK); if(check_type == NULL) { if(g_hash_table_lookup(dev->params, STONITH_ATTR_HOSTLIST)) { check_type = "static-list"; } else if(g_hash_table_lookup(dev->params, STONITH_ATTR_HOSTMAP)) { check_type = "static-list"; } else { check_type = "dynamic-list"; } } return check_type; } static void update_dynamic_list(stonith_device_t *dev) { time_t now = time(NULL); /* Host/alias must be in the list output to be eligable to be fenced * * Will cause problems if down'd nodes aren't listed or (for virtual nodes) * if the guest is still listed despite being moved to another machine */ if(dev->targets_age < 0) { crm_trace("Port list queries disabled for %s", dev->id); } else if(dev->targets == NULL || dev->targets_age + 60 < now) { char *output = NULL; int rc = pcmk_ok; int exec_rc = pcmk_ok; if(dev->active_pid != 0) { crm_notice("Port list query can not execute because device is busy, using cache: %s", dev->targets ? "YES" : "NO"); return; } 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, strdup(STONITH_ATTR_HOSTCHECK), strdup("status")); g_list_free_full(dev->targets, free); dev->targets = NULL; } else { crm_info("Refreshing port list for %s", dev->id); g_list_free_full(dev->targets, free); dev->targets = parse_host_list(output); dev->targets_age = now; } free(output); } } int stonith_device_register(xmlNode *msg, const char **desc) { const char *value = NULL; stonith_device_t *device = build_device_from_xml(msg); value = g_hash_table_lookup(device->params, STONITH_ATTR_HOSTLIST); if(value) { device->targets = parse_host_list(value); } value = g_hash_table_lookup(device->params, STONITH_ATTR_HOSTMAP); device->aliases = build_port_aliases(value, &(device->targets)); value = target_list_type(device); if (safe_str_eq(value, "dynamic-list")) { /* set the dynamic list during the register to guarantee we have * targets cached */ update_dynamic_list(device); } g_hash_table_replace(device_list, device->id, device); crm_notice("Added '%s' to the device list (%d active devices)", device->id, g_hash_table_size(device_list)); if(desc) { *desc = device->id; } return pcmk_ok; } static int stonith_device_remove(xmlNode *msg, const char **desc) { xmlNode *dev = get_xpath_object("//"F_STONITH_DEVICE, msg, LOG_ERR); const char *id = crm_element_value(dev, XML_ATTR_ID); if(g_hash_table_remove(device_list, id)) { crm_info("Removed '%s' from the device list (%d active devices)", id, g_hash_table_size(device_list)); } else { crm_info("Device '%s' not found (%d active devices)", id, g_hash_table_size(device_list)); } if(desc) { *desc = id; } return pcmk_ok; } static int count_active_levels(stonith_topology_t *tp) { int lpc = 0; int count = 0; for(lpc = 0; lpc < ST_LEVEL_MAX; lpc++) { if(tp->levels[lpc] != NULL) { count++; } } return count; } void free_topology_entry(gpointer data) { stonith_topology_t *tp = data; int lpc = 0; for(lpc = 0; lpc < ST_LEVEL_MAX; lpc++) { if(tp->levels[lpc] != NULL) { g_list_free_full(tp->levels[lpc], free); } } free(tp->node); free(tp); } int stonith_level_register(xmlNode *msg, char **desc) { int id = 0; int rc = pcmk_ok; xmlNode *child = NULL; xmlNode *level = get_xpath_object("//"F_STONITH_LEVEL, msg, LOG_ERR); const char *node = crm_element_value(level, F_STONITH_TARGET); stonith_topology_t *tp = g_hash_table_lookup(topology, node); crm_element_value_int(level, XML_ATTR_ID, &id); if(desc) { *desc = g_strdup_printf("%s[%d]", node, id); } if(id <= 0 || id >= ST_LEVEL_MAX) { return -EINVAL; } if(tp == NULL) { tp = calloc(1, sizeof(stonith_topology_t)); tp->node = strdup(node); g_hash_table_replace(topology, tp->node, tp); crm_trace("Added %s to the topology (%d active entries)", node, g_hash_table_size(topology)); } if(tp->levels[id] != NULL) { crm_info("Adding to the existing %s[%d] topology entry (%d active entries)", node, id, count_active_levels(tp)); } for (child = __xml_first_child(level); child != NULL; child = __xml_next(child)) { const char *device = ID(child); crm_trace("Adding device '%s' for %s (%d)", device, node, id); tp->levels[id] = g_list_append(tp->levels[id], strdup(device)); } crm_info("Node %s has %d active fencing levels", node, count_active_levels(tp)); return rc; } int stonith_level_remove(xmlNode *msg, char **desc) { int id = 0; xmlNode *level = get_xpath_object("//"F_STONITH_LEVEL, msg, LOG_ERR); const char *node = crm_element_value(level, F_STONITH_TARGET); stonith_topology_t *tp = g_hash_table_lookup(topology, node); if(desc) { *desc = g_strdup_printf("%s[%d]", node, id); } crm_element_value_int(level, XML_ATTR_ID, &id); if(tp == NULL) { crm_info("Node %s not found (%d active entries)", node, g_hash_table_size(topology)); return pcmk_ok; } else if(id < 0 || id >= ST_LEVEL_MAX) { return -EINVAL; } if(id == 0 && g_hash_table_remove(topology, node)) { crm_info("Removed all %s related entries from the topology (%d active entries)", node, g_hash_table_size(topology)); } else if(id > 0 && tp->levels[id] != NULL) { g_list_free_full(tp->levels[id], free); tp->levels[id] = NULL; crm_info("Removed entry '%d' from %s's topology (%d active entries remaining)", id, node, count_active_levels(tp)); } return pcmk_ok; } static gboolean string_in_list(GListPtr list, const char *item) { int lpc = 0; int max = g_list_length(list); for(lpc = 0; lpc < max; lpc ++) { const char *value = g_list_nth_data(list, lpc); if(safe_str_eq(item, value)) { return TRUE; } } return FALSE; } static int stonith_device_action(xmlNode *msg, char **output) { int rc = pcmk_ok; xmlNode *dev = get_xpath_object("//"F_STONITH_DEVICE, msg, LOG_ERR); const char *id = crm_element_value(dev, F_STONITH_DEVICE); async_command_t *cmd = NULL; stonith_device_t *device = NULL; if(id) { crm_trace("Looking for '%s'", id); device = g_hash_table_lookup(device_list, id); } if(device) { cmd = create_async_command(msg); if(cmd == NULL) { free_device(device); return -EPROTO; } schedule_stonith_command(cmd, device); rc = -EINPROGRESS; } else { crm_info("Device %s not found", id?id:""); rc = -ENODEV; } return rc; } static gboolean can_fence_host_with_device(stonith_device_t *dev, const char *host) { gboolean can = FALSE; const char *alias = host; const char *check_type = NULL; if(dev == NULL) { return FALSE; } else if(host == NULL) { return TRUE; } if(g_hash_table_lookup(dev->aliases, host)) { alias = g_hash_table_lookup(dev->aliases, host); } check_type = target_list_type(dev); if(safe_str_eq(check_type, "none")) { can = TRUE; } else if(safe_str_eq(check_type, "static-list")) { /* Presence in the hostmap is sufficient * Only use if all hosts on which the device can be active can always fence all listed hosts */ if(string_in_list(dev->targets, host)) { can = TRUE; } else if(g_hash_table_lookup(dev->params, STONITH_ATTR_HOSTMAP) && g_hash_table_lookup(dev->aliases, host)) { can = TRUE; } } else if(safe_str_eq(check_type, "dynamic-list")) { update_dynamic_list(dev); if(string_in_list(dev->targets, alias)) { can = TRUE; } } else if(safe_str_eq(check_type, "status")) { int rc = 0; int exec_rc = 0; /* 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; const char *action = NULL; 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 pcmk_ok; } action = crm_element_value(dev, F_STONITH_ACTION); } crm_log_xml_debug(msg, "Query"); g_hash_table_foreach(device_list, search_devices, &search); available_devices = g_list_length(search.capable); if(search.host) { crm_debug("Found %d matching devices for '%s'", available_devices, search.host); } else { crm_debug("%d devices installed", available_devices); } /* Pack the results into data */ if(list) { GListPtr lpc = NULL; *list = create_xml_node(NULL, __FUNCTION__); crm_xml_add(*list, F_STONITH_TARGET, search.host); crm_xml_add_int(*list, "st-available-devices", available_devices); for(lpc = search.capable; lpc != NULL; lpc = lpc->next) { stonith_device_t *device = (stonith_device_t*)lpc->data; int action_specific_timeout = get_action_timeout(device, action, 0); dev = create_xml_node(*list, F_STONITH_DEVICE); crm_xml_add(dev, XML_ATTR_ID, device->id); crm_xml_add(dev, "namespace", device->namespace); crm_xml_add(dev, "agent", device->agent); if (action_specific_timeout) { crm_xml_add_int(dev, F_STONITH_ACTION_TIMEOUT, action_specific_timeout); } if(search.host == NULL) { xmlNode *attrs = create_xml_node(dev, XML_TAG_ATTRS); g_hash_table_foreach(device->params, hash2field, attrs); } } } g_list_free(search.capable); return available_devices; } static void log_operation(async_command_t *cmd, int rc, int pid, const char *next, const char *output) { if(rc == 0) { next = NULL; } if(cmd->victim != NULL) { do_crm_log(rc==0?LOG_NOTICE:LOG_ERR, - "Operation '%s' [%d] (call %d from %s) for host '%s' with device '%s' returned: %d%s%s", - cmd->action, pid, cmd->id, cmd->client, cmd->victim, cmd->device, rc, + "Operation '%s' [%d] (call %d from %s) for host '%s' with device '%s' returned: %d(%s)%s%s", + cmd->action, pid, cmd->id, cmd->client, cmd->victim, cmd->device, rc, pcmk_strerror(rc), next?". Trying: ":"", next?next:""); } else { do_crm_log_unlikely(rc==0?LOG_DEBUG:LOG_NOTICE, - "Operation '%s' [%d] for device '%s' returned: %d%s%s", - cmd->action, pid, cmd->device, rc, next?". Trying: ":"", next?next:""); + "Operation '%s' [%d] for device '%s' returned: %d(%s)%s%s", + cmd->action, pid, cmd->device, rc, pcmk_strerror(rc), next?". Trying: ":"", next?next:""); } if(output) { /* Logging the whole string confuses syslog when the string is xml */ char *local_copy = strdup(output); int lpc = 0, last = 0, more = strlen(local_copy); for(lpc = 0; lpc < more; lpc++) { if(local_copy[lpc] == '\n' || local_copy[lpc] == 0) { local_copy[lpc] = 0; do_crm_log(rc==0?LOG_INFO:LOG_WARNING, "%s: %s", cmd->device, local_copy+last); last = lpc+1; } } crm_debug("%s: %s (total %d bytes)", cmd->device, local_copy+last, more); free(local_copy); } } static void stonith_send_async_reply(async_command_t *cmd, const char *output, int rc, GPid pid) { xmlNode *reply = NULL; gboolean bcast = TRUE; reply = stonith_construct_async_reply(cmd, output, NULL, rc); if(safe_str_eq(cmd->action, "metadata")) { /* Too verbose to log */ bcast = FALSE; output = NULL; crm_trace("Directed reply: %s op", cmd->action); } else if(crm_str_eq(cmd->action, "monitor", TRUE) || crm_str_eq(cmd->action, "list", TRUE) || crm_str_eq(cmd->action, "status", TRUE)) { crm_trace("Directed reply: %s op", cmd->action); bcast = FALSE; } else if(safe_str_eq(cmd->mode, "slave")) { crm_trace("Directed reply: Complex op with %s", cmd->device); bcast = FALSE; } 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_trace("Broadcast reply"); crm_xml_add(reply, F_STONITH_OPERATION, T_STONITH_NOTIFY); send_cluster_message(NULL, crm_msg_stonith_ng, reply, FALSE); } else if(cmd->origin) { crm_trace("Directed reply to %s", cmd->origin); send_cluster_message(cmd->origin, crm_msg_stonith_ng, reply, FALSE); } else { crm_trace("Directed local %ssync reply to %s", (cmd->options & st_opt_sync_call)?"":"a-", cmd->client); do_local_reply(reply, cmd->client, cmd->options & st_opt_sync_call, FALSE); } if(stand_alone) { /* Do notification with a clean data object */ xmlNode *notify_data = create_xml_node(NULL, T_STONITH_NOTIFY_FENCE); crm_xml_add_int(notify_data, F_STONITH_RC, rc); crm_xml_add(notify_data, F_STONITH_TARGET, cmd->victim); crm_xml_add(notify_data, F_STONITH_OPERATION, cmd->op); crm_xml_add(notify_data, F_STONITH_DELEGATE, cmd->device); crm_xml_add(notify_data, F_STONITH_REMOTE, cmd->remote); crm_xml_add(notify_data, F_STONITH_ORIGIN, cmd->client); do_stonith_notify(0, T_STONITH_NOTIFY_FENCE, rc, notify_data, NULL); } free_xml(reply); } static void cancel_stonith_command(async_command_t *cmd) { stonith_device_t *device; CRM_CHECK(cmd != NULL, return); if (!cmd->device) { return; } device = g_hash_table_lookup(device_list, cmd->device); if (device) { crm_trace("Cancel scheduled %s on %s", cmd->action, device->id); device->pending_ops = g_list_remove(device->pending_ops, cmd); } } #define READ_MAX 500 static void st_child_done(GPid pid, gint status, gpointer user_data) { int rc = -pcmk_err_generic; int len = 0; int more = 0; char *output = NULL; stonith_device_t *device = NULL; async_command_t *cmd = user_data; GListPtr gIter = NULL; GListPtr gIterNext = NULL; CRM_CHECK(cmd != NULL, return); if(cmd->timer_sigterm > 0) { g_source_remove(cmd->timer_sigterm); } if(cmd->timer_sigkill > 0) { g_source_remove(cmd->timer_sigkill); } - if(WIFSIGNALED(status)) { + if(cmd->last_timeout_signo) { + crm_notice("Child process %d performing action '%s' with '%s' timed out with signal %d", + pid, cmd->action, cmd->device, cmd->last_timeout_signo); + rc = -ETIME; + } else if(WIFSIGNALED(status)) { int signo = WTERMSIG(status); - if(signo == SIGTERM || signo == SIGKILL) { - rc = -ETIME; - } else { - rc = -ECONNABORTED; - } + rc = -ECONNABORTED; crm_notice("Child process %d 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 %d 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); } do { char buffer[READ_MAX]; errno = 0; if(cmd->fd_stdout > 0) { memset(&buffer, 0, READ_MAX); more = read(cmd->fd_stdout, buffer, READ_MAX-1); crm_trace("Got %d more bytes: %s", more, buffer); } if(more > 0) { output = realloc(output, len + more + 1); sprintf(output+len, "%s", buffer); len += more; } } while (more == (READ_MAX-1) || (more < 0 && errno == EINTR)); if(cmd->fd_stdout) { close(cmd->fd_stdout); cmd->fd_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); /* Prevent cmd from being freed */ cmd = NULL; goto done; } if(rc > 0) { rc = -pcmk_err_generic; } stonith_send_async_reply(cmd, output, rc, pid); if(rc != 0) { goto done; } /* Check to see if any operations are scheduled to do the exact * same thing that just completed. If so, rather than * performing the same fencing operation twice, return the result * of this operation for all pending commands it matches. */ for (gIter = cmd_list; gIter != NULL; gIter = gIterNext) { async_command_t *cmd_other = gIter->data; gIterNext = gIter->next; if(cmd == cmd_other) { continue; } /* A pending scheduled command matches the command that just finished if. * 1. The client connections are different. * 2. The node victim is the same. * 3. The fencing action is the same. * 4. The device scheduled to execute the action is the same. */ if(safe_str_eq(cmd->client, cmd_other->client) || safe_str_neq(cmd->victim, cmd_other->victim) || safe_str_neq(cmd->action, cmd_other->action) || safe_str_neq(cmd->device, cmd_other->device)) { continue; } crm_notice("Merging stonith action %s for node %s originating from client %s with identical stonith request from client %s", cmd_other->action, cmd_other->victim, cmd_other->client, cmd->client); cmd_list = g_list_remove_link(cmd_list, gIter); stonith_send_async_reply(cmd_other, output, rc, pid); cancel_stonith_command(cmd_other); free_async_command(cmd_other); g_list_free_1(gIter); } done: free_async_command(cmd); free(output); } static gint sort_device_priority(gconstpointer a, gconstpointer b) { const stonith_device_t *dev_a = a; const stonith_device_t *dev_b = a; if(dev_a->priority > dev_b->priority) { return -1; } else if(dev_a->priority < dev_b->priority) { return 1; } return 0; } static int stonith_fence(xmlNode *msg) { int options = 0; const char *device_id = NULL; stonith_device_t *device = NULL; async_command_t *cmd = create_async_command(msg); xmlNode *dev = get_xpath_object("//@"F_STONITH_TARGET, msg, LOG_ERR); if(cmd == NULL) { return -EPROTO; } device_id = crm_element_value(dev, F_STONITH_DEVICE); if(device_id) { device = g_hash_table_lookup(device_list, device_id); if(device == NULL) { crm_err("Requested device '%s' is not available", device_id); } } else { struct device_search_s search; search.capable = NULL; search.host = crm_element_value(dev, F_STONITH_TARGET); crm_element_value_int(msg, F_STONITH_CALLOPTS, &options); if(options & st_opt_cs_nodeid) { int nodeid = crm_atoi(search.host, NULL); crm_node_t *node = crm_get_peer(nodeid, NULL); if(node) { search.host = node->uname; } } g_hash_table_foreach(device_list, search_devices, &search); crm_info("Found %d matching devices for '%s'", g_list_length(search.capable), search.host); if(g_list_length(search.capable) > 0) { /* Order based on priority */ search.capable = g_list_sort(search.capable, sort_device_priority); device = search.capable->data; if(g_list_length(search.capable) > 1) { cmd->device_list = search.capable; cmd->device_next = cmd->device_list->next; } else { g_list_free(search.capable); } } } if(device) { schedule_stonith_command(cmd, device); return -EINPROGRESS; } free_async_command(cmd); return -EHOSTUNREACH; } xmlNode *stonith_construct_reply(xmlNode *request, char *output, xmlNode *data, int rc) { int lpc = 0; xmlNode *reply = NULL; const char *name = NULL; const char *value = NULL; const char *names[] = { F_STONITH_OPERATION, F_STONITH_CALLID, F_STONITH_CLIENTID, F_STONITH_CLIENTNAME, F_STONITH_REMOTE, F_STONITH_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, const char *output, xmlNode *data, int rc) { xmlNode *reply = NULL; crm_trace("Creating a basic reply"); reply = create_xml_node(NULL, T_STONITH_REPLY); crm_xml_add(reply, "st_origin", __FUNCTION__); crm_xml_add(reply, F_TYPE, T_STONITH_NG); crm_xml_add(reply, F_STONITH_OPERATION, cmd->op); crm_xml_add(reply, F_STONITH_DEVICE, cmd->device); crm_xml_add(reply, F_STONITH_REMOTE, cmd->remote); crm_xml_add(reply, F_STONITH_CLIENTID, cmd->client); crm_xml_add(reply, F_STONITH_CLIENTNAME, cmd->client_name); crm_xml_add(reply, F_STONITH_TARGET, cmd->victim); crm_xml_add(reply, F_STONITH_ACTION, cmd->op); crm_xml_add(reply, F_STONITH_ORIGIN, cmd->origin); crm_xml_add_int(reply, F_STONITH_CALLID, cmd->id); crm_xml_add_int(reply, F_STONITH_CALLOPTS, cmd->options); crm_xml_add_int(reply, F_STONITH_RC, rc); crm_xml_add(reply, "st_output", output); if(data != NULL) { crm_info("Attaching reply output"); add_message_xml(reply, F_STONITH_CALLDATA, data); } return reply; } void stonith_command(stonith_client_t *client, uint32_t id, uint32_t flags, xmlNode *request, const char *remote) { int call_options = 0; int rc = -EOPNOTSUPP; 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(is_set(call_options, st_opt_sync_call)) { CRM_ASSERT(client->request_id == id); } 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, id, reply, FALSE); client->request_id = 0; free_xml(reply); return; } else if(crm_str_eq(op, STONITH_OP_EXEC, TRUE)) { rc = stonith_device_action(request, &output); } else if (crm_str_eq(op, STONITH_OP_TIMEOUT_UPDATE, TRUE)) { const char *call_id = crm_element_value(request, F_STONITH_CALLID); const char *client_id = crm_element_value(request, F_STONITH_CLIENTID); int op_timeout = 0; crm_element_value_int(request, F_STONITH_TIMEOUT, &op_timeout); do_stonith_async_timeout_update(client_id, call_id, op_timeout); return; } 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(is_reply && crm_str_eq(op, STONITH_OP_FENCE, TRUE)) { /* Reply to a complex fencing op */ 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); } if(flags & crm_ipc_client_response) { crm_ipcs_send_ack(client->channel, id, "ack", __FUNCTION__, __LINE__); client->request_id = 0; } 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_RELAY, TRUE)) { if(initiate_remote_stonith_op(NULL, request, FALSE) != NULL) { rc = -EINPROGRESS; } } 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 { const char *alternate_host = NULL; xmlNode *dev = get_xpath_object("//@"F_STONITH_TARGET, request, LOG_TRACE); const char *target = crm_element_value_copy(dev, F_STONITH_TARGET); if(g_hash_table_lookup(topology, target) && safe_str_eq(target, stonith_our_uname)) { GHashTableIter gIter; crm_node_t *entry = NULL; int membership = crm_proc_plugin | crm_proc_heartbeat | crm_proc_cpg; g_hash_table_iter_init(&gIter, crm_peer_cache); while (g_hash_table_iter_next(&gIter, NULL, (void **)&entry)) { crm_trace("Checking for %s.%d != %s", entry->uname, entry->id, target); if(entry->uname && (entry->processes & membership) && safe_str_neq(entry->uname, target)) { alternate_host = entry->uname; break; } } if(alternate_host == NULL) { crm_err("No alternate host available to handle complex self fencing request"); g_hash_table_iter_init(&gIter, crm_peer_cache); while (g_hash_table_iter_next(&gIter, NULL, (void **)&entry)) { crm_notice("Peer[%d] %s", entry->id, entry->uname); } } } if(alternate_host) { crm_notice("Forwarding complex self fencing request to peer %s", alternate_host); crm_xml_add(request, F_STONITH_OPERATION, STONITH_OP_RELAY); crm_xml_add(request, F_STONITH_CLIENTID, client->id); send_cluster_message(alternate_host, crm_msg_stonith_ng, request, FALSE); rc = -EINPROGRESS; } else if(initiate_remote_stonith_op(client, request, FALSE) != NULL) { rc = -EINPROGRESS; } } } else if (crm_str_eq(op, STONITH_OP_FENCE_HISTORY, TRUE)) { rc = stonith_fence_history(request, &data); always_reply = TRUE; } else if(crm_str_eq(op, CRM_OP_REGISTER, TRUE)) { return; } else if(crm_str_eq(op, STONITH_OP_DEVICE_ADD, TRUE)) { const char *id = NULL; xmlNode *notify_data = create_xml_node(NULL, op); rc = stonith_device_register(request, &id); crm_xml_add(notify_data, F_STONITH_DEVICE, id); crm_xml_add_int(notify_data, F_STONITH_ACTIVE, g_hash_table_size(device_list)); do_stonith_notify(call_options, op, rc, notify_data, NULL); free_xml(notify_data); } else if(crm_str_eq(op, STONITH_OP_DEVICE_DEL, TRUE)) { const char *id = NULL; xmlNode *notify_data = create_xml_node(NULL, op); rc = stonith_device_remove(request, &id); crm_xml_add(notify_data, F_STONITH_DEVICE, id); crm_xml_add_int(notify_data, F_STONITH_ACTIVE, g_hash_table_size(device_list)); do_stonith_notify(call_options, op, rc, notify_data, NULL); free_xml(notify_data); } else if(crm_str_eq(op, STONITH_OP_LEVEL_ADD, TRUE)) { char *id = NULL; xmlNode *notify_data = create_xml_node(NULL, op); rc = stonith_level_register(request, &id); crm_xml_add(notify_data, F_STONITH_DEVICE, id); crm_xml_add_int(notify_data, F_STONITH_ACTIVE, g_hash_table_size(topology)); do_stonith_notify(call_options, op, rc, notify_data, NULL); free_xml(notify_data); } else if(crm_str_eq(op, STONITH_OP_LEVEL_DEL, TRUE)) { char *id = NULL; xmlNode *notify_data = create_xml_node(NULL, op); rc = stonith_level_remove(request, &id); crm_xml_add(notify_data, F_STONITH_DEVICE, id); crm_xml_add_int(notify_data, F_STONITH_ACTIVE, g_hash_table_size(topology)); do_stonith_notify(call_options, op, rc, notify_data, NULL); free_xml(notify_data); } else if(crm_str_eq(op, STONITH_OP_CONFIRM, TRUE)) { async_command_t *cmd = create_async_command(request); xmlNode *reply = stonith_construct_async_reply(cmd, NULL, NULL, 0); crm_xml_add(reply, F_STONITH_OPERATION, T_STONITH_NOTIFY); crm_notice("Broadcasting manual fencing confirmation for node %s", cmd->victim); send_cluster_message(NULL, crm_msg_stonith_ng, reply, FALSE); free_async_command(cmd); free_xml(reply); } else { crm_err("Unknown %s%s from %s", op, is_reply?" reply":"", client?client->name:remote); crm_log_xml_warn(request, "UnknownOp"); } do_crm_log_unlikely(rc>0?LOG_DEBUG:LOG_INFO,"Processed %s%s from %s: %s (%d)", op, is_reply?" reply":"", client?client->name:remote, rc>0?"":pcmk_strerror(rc), rc); if(is_reply || rc == -EINPROGRESS) { /* 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 <= pcmk_ok || always_reply) { reply = stonith_construct_reply(request, output, data, rc); do_local_reply(reply, client_id, call_options & st_opt_sync_call, remote!=NULL); free_xml(reply); } free(output); free_xml(data); } diff --git a/include/crm/fencing/internal.h b/include/crm/fencing/internal.h index 445b2a5f1c..842c532945 100644 --- a/include/crm/fencing/internal.h +++ b/include/crm/fencing/internal.h @@ -1,133 +1,135 @@ /* * Copyright (C) 2011 Andrew Beekhof * * 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 # include typedef struct async_command_s { int id; int pid; int fd_stdout; int options; int default_timeout; int timeout; char *op; char *origin; char *client; char *client_name; char *remote; char *victim; char *action; char *device; char *mode; GListPtr device_list; GListPtr device_next; void (*done)(GPid pid, gint status, gpointer user_data); guint timer_sigterm; guint timer_sigkill; - + /*! If the operation timed out, this is the last signal + * we sent to the process to get it to terminate */ + int last_timeout_signo; } async_command_t; 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); gboolean is_redhat_agent(const char *agent); xmlNode *create_level_registration_xml(const char *node, int level, stonith_key_value_t * device_list); xmlNode *create_device_registration_xml(const char *id, const char *namespace, const char *agent, stonith_key_value_t * params); #define ST_LEVEL_MAX 10 #define F_STONITH_CLIENTID "st_clientid" #define F_STONITH_CALLOPTS "st_callopt" #define F_STONITH_CALLID "st_callid" #define F_STONITH_CALLDATA "st_calldata" #define F_STONITH_OPERATION "st_op" #define F_STONITH_TARGET "st_target" #define F_STONITH_REMOTE "st_remote_op" #define F_STONITH_RC "st_rc" /*! Timeout period per a device execution */ #define F_STONITH_TIMEOUT "st_timeout" /*! Action specific timeout period returned in query of fencing devices. */ #define F_STONITH_ACTION_TIMEOUT "st_action_timeout" #define F_STONITH_CALLBACK_TOKEN "st_async_id" #define F_STONITH_CLIENTNAME "st_clientname" #define F_STONITH_CLIENTNODE "st_clientnode" #define F_STONITH_NOTIFY_TYPE "st_notify_type" #define F_STONITH_NOTIFY_ACTIVATE "st_notify_activate" #define F_STONITH_NOTIFY_DEACTIVATE "st_notify_deactivate" #define F_STONITH_DELEGATE "st_delegate" /*! The node initiating the stonith operation. If an operation * is relayed, this is the last node the operation lands on. When * in standalone mode, origin is the client's id that originated the * operation. */ #define F_STONITH_ORIGIN "st_origin" #define F_STONITH_HISTORY_LIST "st_history" #define F_STONITH_DATE "st_date" #define F_STONITH_STATE "st_state" #define F_STONITH_LEVEL "st_level" #define F_STONITH_ACTIVE "st_active" #define F_STONITH_DEVICE "st_device_id" #define F_STONITH_ACTION "st_device_action" #define F_STONITH_MODE "st_mode" #define T_STONITH_NG "stonith-ng" #define T_STONITH_REPLY "st-reply" /*! For async operations, an event from the server containing * the total amount of time the server is allowing for the operation * to take place is returned to the client. */ #define T_STONITH_TIMEOUT_VALUE "st-async-timeout-value" #define T_STONITH_NOTIFY "st_notify" #define STONITH_ATTR_ARGMAP "pcmk_arg_map" #define STONITH_ATTR_HOSTARG "pcmk_host_argument" #define STONITH_ATTR_HOSTMAP "pcmk_host_map" #define STONITH_ATTR_HOSTLIST "pcmk_host_list" #define STONITH_ATTR_HOSTCHECK "pcmk_host_check" #define STONITH_ATTR_ACTION_OP "action" #define STONITH_OP_EXEC "st_execute" #define STONITH_OP_TIMEOUT_UPDATE "st_timeout_update" #define STONITH_OP_QUERY "st_query" #define STONITH_OP_FENCE "st_fence" #define STONITH_OP_RELAY "st_relay" #define STONITH_OP_CONFIRM "st_confirm" #define STONITH_OP_DEVICE_ADD "st_device_register" #define STONITH_OP_DEVICE_DEL "st_device_remove" #define STONITH_OP_DEVICE_METADATA "st_device_metadata" #define STONITH_OP_FENCE_HISTORY "st_fence_history" #define STONITH_OP_LEVEL_ADD "st_level_add" #define STONITH_OP_LEVEL_DEL "st_level_remove" #define stonith_channel "st_command" #define stonith_channel_callback "st_callback" #endif diff --git a/lib/fencing/st_client.c b/lib/fencing/st_client.c index ab6da92eab..5d1a509c25 100644 --- a/lib/fencing/st_client.c +++ b/lib/fencing/st_client.c @@ -1,2101 +1,2103 @@ /* * Copyright (c) 2004 Andrew Beekhof * * 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 #include #include #include #include #include #include #include #include #include #include #include #include /* Add it for compiling on OSX */ #include #include #include #include #include #ifdef HAVE_STONITH_STONITH_H # include # define LHA_STONITH_LIBRARY "libstonith.so.1" static void *lha_agents_lib = NULL; #endif #include 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, 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[] = "\n" "\n" "\n" " 1.0\n" " \n" "%s\n" " \n" " %s\n" "%s\n" " \n" " \n" " \n" " \n" " \n" " \n" " \n" " \n" " 2.0\n" " \n" "\n"; bool stonith_dispatch(stonith_t * st); int stonith_dispatch_internal(const char *buffer, ssize_t length, gpointer userdata); void stonith_perform_callback(stonith_t * stonith, xmlNode * msg, int call_id, int rc); xmlNode *stonith_create_op(int call_id, const char *token, const char *op, xmlNode * data, int call_options); int stonith_send_command(stonith_t * stonith, const char *op, xmlNode * data, xmlNode ** output_data, int call_options, int timeout); static void stonith_connection_destroy(gpointer user_data); static void stonith_send_notification(gpointer data, gpointer user_data); static void stonith_connection_destroy(gpointer user_data) { stonith_t *stonith = user_data; stonith_private_t *native = NULL; struct notify_blob_s blob; crm_trace("Sending destroyed notification"); blob.stonith = stonith; blob.xml = create_xml_node(NULL, "notify"); native = stonith->private; native->ipc = NULL; native->source = NULL; stonith->state = stonith_disconnected; crm_xml_add(blob.xml, F_TYPE, T_STONITH_NOTIFY); crm_xml_add(blob.xml, F_SUBTYPE, T_STONITH_NOTIFY_DISCONNECT); g_list_foreach(native->notify_list, stonith_send_notification, &blob); free_xml(blob.xml); } xmlNode * create_device_registration_xml(const char *id, const char *namespace, const char *agent, stonith_key_value_t * params) { xmlNode *data = create_xml_node(NULL, F_STONITH_DEVICE); xmlNode *args = create_xml_node(data, XML_TAG_ATTRS); crm_xml_add(data, XML_ATTR_ID, id); crm_xml_add(data, "origin", __FUNCTION__); crm_xml_add(data, "agent", agent); crm_xml_add(data, "namespace", namespace); for (; params; params = params->next) { hash2field((gpointer) params->key, (gpointer) params->value, args); } return data; } static int stonith_api_register_device(stonith_t * st, int call_options, const char *id, const char *namespace, const char *agent, stonith_key_value_t * params) { int rc = 0; xmlNode *data = NULL; #if HAVE_STONITH_STONITH_H namespace = get_stonith_provider(agent, namespace); if (safe_str_eq(namespace, "heartbeat")) { stonith_key_value_add(params, "plugin", agent); agent = "fence_legacy"; } #endif data = create_device_registration_xml(id, namespace, agent, params); rc = stonith_send_command(st, STONITH_OP_DEVICE_ADD, data, NULL, call_options, 0); free_xml(data); return rc; } static int stonith_api_remove_device(stonith_t * st, int call_options, const char *name) { int rc = 0; xmlNode *data = NULL; data = create_xml_node(NULL, F_STONITH_DEVICE); crm_xml_add(data, "origin", __FUNCTION__); crm_xml_add(data, XML_ATTR_ID, name); rc = stonith_send_command(st, STONITH_OP_DEVICE_DEL, data, NULL, call_options, 0); free_xml(data); return rc; } static int stonith_api_remove_level(stonith_t * st, int options, const char *node, int level) { int rc = 0; xmlNode *data = NULL; data = create_xml_node(NULL, F_STONITH_LEVEL); crm_xml_add(data, "origin", __FUNCTION__); crm_xml_add(data, F_STONITH_TARGET, node); crm_xml_add_int(data, XML_ATTR_ID, level); rc = stonith_send_command(st, STONITH_OP_LEVEL_DEL, data, NULL, options, 0); free_xml(data); return rc; } xmlNode * create_level_registration_xml(const char *node, int level, stonith_key_value_t * device_list) { xmlNode *data = create_xml_node(NULL, F_STONITH_LEVEL); crm_xml_add_int(data, XML_ATTR_ID, level); crm_xml_add(data, F_STONITH_TARGET, node); crm_xml_add(data, "origin", __FUNCTION__); for (; device_list; device_list = device_list->next) { xmlNode *dev = create_xml_node(data, F_STONITH_DEVICE); crm_xml_add(dev, XML_ATTR_ID, device_list->value); } return data; } static int stonith_api_register_level(stonith_t * st, int options, const char *node, int level, stonith_key_value_t * device_list) { int rc = 0; xmlNode *data = create_level_registration_xml(node, level, device_list); rc = stonith_send_command(st, STONITH_OP_LEVEL_ADD, data, NULL, options, 0); free_xml(data); return rc; } static void append_arg(gpointer key, gpointer value, gpointer user_data) { int len = 3; /* =, \n, \0 */ int last = 0; char **args = user_data; CRM_CHECK(key != NULL, return); CRM_CHECK(value != NULL, return); if (strstr(key, "pcmk_")) { return; } else if (strstr(key, CRM_META)) { return; } else if (safe_str_eq(key, "crm_feature_set")) { return; } len += strlen(key); len += strlen(value); if (*args != NULL) { last = strlen(*args); } *args = realloc(*args, last + len); crm_trace("Appending: %s=%s", (char *)key, (char *)value); sprintf((*args) + last, "%s=%s\n", (char *)key, (char *)value); } static void append_const_arg(const char *key, const char *value, char **arg_list) { char *glib_sucks_key = strdup(key); char *glib_sucks_value = strdup(value); append_arg(glib_sucks_key, glib_sucks_value, arg_list); free(glib_sucks_value); free(glib_sucks_key); } static void append_host_specific_args(const char *victim, const char *map, GHashTable * params, char **arg_list) { char *name = NULL; int last = 0, lpc = 0, max = 0; if (map == NULL) { /* The best default there is for now... */ crm_debug("Using default arg map: port=uname"); append_const_arg("port", victim, arg_list); return; } max = strlen(map); crm_debug("Processing arg map: %s", map); for (; lpc < max + 1; lpc++) { if (isalpha(map[lpc])) { /* keep going */ } else if (map[lpc] == '=' || map[lpc] == ':') { free(name); name = calloc(1, 1 + lpc - last); memcpy(name, map + last, lpc - last); crm_debug("Got name: %s", name); last = lpc + 1; } else if (map[lpc] == 0 || map[lpc] == ',' || isspace(map[lpc])) { char *param = NULL; const char *value = NULL; param = calloc(1, 1 + lpc - last); memcpy(param, map + last, lpc - last); last = lpc + 1; crm_debug("Got key: %s", param); if (name == NULL) { crm_err("Misparsed '%s', found '%s' without a name", map, param); free(param); continue; } if (safe_str_eq(param, "uname")) { value = victim; } else { char *key = crm_meta_name(param); value = g_hash_table_lookup(params, key); free(key); } if (value) { crm_debug("Setting '%s'='%s' (%s) for %s", name, value, param, victim); append_const_arg(name, value, arg_list); } else { crm_err("No node attribute '%s' for '%s'", name, victim); } free(name); name = NULL; free(param); if (map[lpc] == 0) { break; } } else if (isspace(map[lpc])) { last = lpc; } } free(name); } static char * make_args(const char *action, const char *victim, GHashTable * device_args, GHashTable * port_map) { char buffer[512]; char *arg_list = NULL; const char *value = NULL; CRM_CHECK(action != NULL, return NULL); if (device_args) { g_hash_table_foreach(device_args, append_arg, &arg_list); } buffer[511] = 0; snprintf(buffer, 511, "pcmk_%s_action", action); if (device_args) { value = g_hash_table_lookup(device_args, buffer); } if (value == NULL && device_args) { /* Legacy support for early 1.1 releases - Remove for 1.4 */ snprintf(buffer, 511, "pcmk_%s_cmd", action); value = g_hash_table_lookup(device_args, buffer); } if (value == NULL && device_args && safe_str_eq(action, "off")) { /* Legacy support for late 1.1 releases - Remove for 1.4 */ value = g_hash_table_lookup(device_args, "pcmk_poweroff_action"); } if (value) { crm_info("Substituting action '%s' for requested operation '%s'", value, action); action = value; } append_const_arg(STONITH_ATTR_ACTION_OP, action, &arg_list); if (victim && device_args) { const char *alias = victim; const char *param = g_hash_table_lookup(device_args, STONITH_ATTR_HOSTARG); if (port_map && g_hash_table_lookup(port_map, victim)) { alias = g_hash_table_lookup(port_map, victim); } /* Always supply the node's name too: * https://fedorahosted.org/cluster/wiki/FenceAgentAPI */ append_const_arg("nodename", victim, &arg_list); /* Check if we need to supply the victim in any other form */ if (param == NULL) { const char *map = g_hash_table_lookup(device_args, STONITH_ATTR_ARGMAP); if (map == NULL) { param = "port"; value = g_hash_table_lookup(device_args, param); } else { /* Legacy handling */ append_host_specific_args(alias, map, device_args, &arg_list); value = map; /* Nothing more to do */ } } else if (safe_str_eq(param, "none")) { value = param; /* Nothing more to do */ } else { value = g_hash_table_lookup(device_args, param); } /* Don't overwrite explictly set values for $param */ if (value == NULL || safe_str_eq(value, "dynamic")) { crm_debug("Performing %s action for node '%s' as '%s=%s'", action, victim, param, alias); append_const_arg(param, alias, &arg_list); } } crm_trace("Calculated: %s", arg_list); return arg_list; } static gboolean st_child_term(gpointer data) { int rc = 0; async_command_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; async_command_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; } /* 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 = -EPROTO; 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 = -ECHILD; goto fail; } if (pid) { /* parent */ int ret; int total = 0; 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", agent); } 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 = -EREMOTEIO; } goto fail; } close(p_write_fd); if (track && track->done) { track->fd_stdout = p_read_fd; g_child_watch_add(pid, track->done, track); crm_trace("Op: %s on %s, pid: %d, timeout: %ds", action, agent, pid, track->timeout); - + track->last_timeout_signo = 0; if (track->timeout) { track->pid = pid; track->timer_sigterm = g_timeout_add(1000*track->timeout, st_child_term, track); track->timer_sigkill = g_timeout_add(1000*(track->timeout+5), st_child_kill, track); } else { crm_err("No timeout set for stonith operation %s with device %s", action, agent); } close(c_write_fd); close(c_read_fd); 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) { char *local_copy; int lpc = 0, last = 0, more; len = 0; do { char buf[500]; ret = read(p_read_fd, buf, 500); if (ret > 0) { buf[ret] = 0; *output = realloc(*output, len + ret + 1); sprintf((*output) + len, "%s", buf); crm_trace("%d: %s", ret, (*output) + len); len += ret; } } while (ret == 500 || (ret < 0 && errno == EINTR)); if (*output) { local_copy = strdup(*output); more = strlen(local_copy); for(lpc = 0; lpc < more; lpc++) { if(local_copy[lpc] == '\n' || local_copy[lpc] == 0) { local_copy[lpc] = 0; crm_debug("%s: %s", agent, local_copy+last); last = lpc+1; } } crm_debug("%s: %s (total %d bytes)", agent, local_copy+last, more); free(local_copy); } } rc = -ECONNABORTED; *agent_result = -ECONNABORTED; 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: 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 -EFAULT; } /* Include Heartbeat agents */ if (namespace == NULL || safe_str_eq("heartbeat", namespace)) { #if HAVE_STONITH_STONITH_H static gboolean need_init = TRUE; char **entry = NULL; char **type_list = NULL; static char **(*type_list_fn) (void) = NULL; static void (*type_free_fn) (char **) = NULL; if(need_init) { need_init = FALSE; type_list_fn = find_library_function(&lha_agents_lib, LHA_STONITH_LIBRARY, "stonith_types", FALSE); type_free_fn = find_library_function(&lha_agents_lib, LHA_STONITH_LIBRARY, "stonith_free_hostlist", FALSE); } if(type_list_fn) { type_list = (*type_list_fn)(); } for (entry = type_list; entry != NULL && *entry; ++entry) { crm_trace("Added: %s", *entry); *devices = stonith_key_value_add(*devices, NULL, *entry); count++; } if (type_list && type_free_fn) { (*type_free_fn)(type_list); } #else if(namespace != NULL) { return -EINVAL; /* Heartbeat agents not supported */ } #endif } /* Include Red Hat agents, basically: ls -1 @sbin_dir@/fence_* */ if (namespace == NULL || safe_str_eq("redhat", namespace)) { struct dirent **namelist; int file_num = scandir(RH_STONITH_DIR, &namelist, 0, alphasort); if (file_num > 0) { struct stat prop; char buffer[FILENAME_MAX + 1]; while (file_num--) { if ('.' == namelist[file_num]->d_name[0]) { free(namelist[file_num]); continue; } else if (0 != strncmp(RH_STONITH_PREFIX, namelist[file_num]->d_name, strlen(RH_STONITH_PREFIX))) { free(namelist[file_num]); continue; } snprintf(buffer, FILENAME_MAX, "%s/%s", RH_STONITH_DIR, namelist[file_num]->d_name); if (stat(buffer, &prop) == 0 && S_ISREG(prop.st_mode)) { *devices = stonith_key_value_add(*devices, NULL, namelist[file_num]->d_name); count++; } free(namelist[file_num]); } free(namelist); } } return count; } static int stonith_api_device_metadata(stonith_t * stonith, int call_options, const char *agent, const char *namespace, char **output, int timeout) { int rc = 0; char *buffer = NULL; const char *provider = get_stonith_provider(agent, namespace); crm_trace("looking up %s/%s metadata", agent, provider); /* By having this in a library, we can access it from stonith_admin * when neither lrmd or stonith-ng are running * Important for the crm shell's validations... */ if (safe_str_eq(provider, "redhat")) { int exec_rc = run_stonith_agent(agent, "metadata", NULL, NULL, NULL, &rc, &buffer, NULL); if (exec_rc < 0 || rc != 0 || buffer == NULL) { crm_debug("Query failed: %d %d: %s", exec_rc, rc, crm_str(buffer)); free(buffer); /* Just in case */ return -EINVAL; } else { xmlNode *xml = string2xml(buffer); xmlNode *actions = NULL; xmlXPathObject *xpathObj = NULL; xpathObj = xpath_search(xml, "//actions"); if (xpathObj && xpathObj->nodesetval->nodeNr > 0) { actions = getXpathResult(xpathObj, 0); } /* Now fudge the metadata so that the start/stop actions appear */ xpathObj = xpath_search(xml, "//action[@name='stop']"); if (xpathObj == NULL || xpathObj->nodesetval->nodeNr <= 0) { xmlNode *tmp = NULL; tmp = create_xml_node(actions, "action"); crm_xml_add(tmp, "name", "stop"); crm_xml_add(tmp, "timeout", "20s"); tmp = create_xml_node(actions, "action"); crm_xml_add(tmp, "name", "start"); crm_xml_add(tmp, "timeout", "20s"); } /* Now fudge the metadata so that the port isn't required in the configuration */ xpathObj = xpath_search(xml, "//parameter[@name='port']"); if (xpathObj && xpathObj->nodesetval->nodeNr > 0) { /* We'll fill this in */ xmlNode *tmp = getXpathResult(xpathObj, 0); crm_xml_add(tmp, "required", "0"); } free(buffer); buffer = dump_xml_formatted(xml); free_xml(xml); } } else { #if !HAVE_STONITH_STONITH_H return -EINVAL; /* Heartbeat agents not supported */ #else int bufferlen = 0; static const char *no_parameter_info = ""; Stonith *stonith_obj = NULL; static gboolean need_init = TRUE; static Stonith *(*st_new_fn) (const char *) = NULL; static const char *(*st_info_fn) (Stonith *, int) = NULL; static void (*st_del_fn) (Stonith *) = NULL; if(need_init) { need_init = FALSE; st_new_fn = find_library_function(&lha_agents_lib, LHA_STONITH_LIBRARY, "stonith_new", FALSE); st_del_fn = find_library_function(&lha_agents_lib, LHA_STONITH_LIBRARY, "stonith_delete", FALSE); st_info_fn = find_library_function(&lha_agents_lib, LHA_STONITH_LIBRARY, "stonith_get_info", FALSE); } if (lha_agents_lib && st_new_fn && st_del_fn && st_info_fn) { char *xml_meta_longdesc = NULL; char *xml_meta_shortdesc = NULL; char *meta_param = NULL; char *meta_longdesc = NULL; char *meta_shortdesc = NULL; stonith_obj = (*st_new_fn) (agent); if(stonith_obj) { meta_longdesc = strdup((*st_info_fn)(stonith_obj, ST_DEVICEDESCR)); if (meta_longdesc == NULL) { crm_warn("no long description in %s's metadata.", agent); meta_longdesc = strdup(no_parameter_info); } meta_shortdesc = strdup((*st_info_fn)(stonith_obj, ST_DEVICEID)); if (meta_shortdesc == NULL) { crm_warn("no short description in %s's metadata.", agent); meta_shortdesc = strdup(no_parameter_info); } meta_param = strdup((*st_info_fn)(stonith_obj, ST_CONF_XML)); if (meta_param == NULL) { crm_warn("no list of parameters in %s's metadata.", agent); meta_param = strdup(no_parameter_info); } (*st_del_fn)(stonith_obj); } else { return -EINVAL; /* Heartbeat agents not supported */ } xml_meta_longdesc = (char *)xmlEncodeEntitiesReentrant(NULL, (const unsigned char *)meta_longdesc); xml_meta_shortdesc = (char *)xmlEncodeEntitiesReentrant(NULL, (const unsigned char *)meta_shortdesc); bufferlen = strlen(META_TEMPLATE) + strlen(agent) + strlen(xml_meta_longdesc) + strlen(xml_meta_shortdesc) + strlen(meta_param) + 1; buffer = calloc(1, bufferlen); snprintf(buffer, bufferlen - 1, META_TEMPLATE, agent, xml_meta_longdesc, xml_meta_shortdesc, meta_param); xmlFree(xml_meta_longdesc); xmlFree(xml_meta_shortdesc); free(meta_shortdesc); free(meta_longdesc); free(meta_param); } #endif } if (output) { *output = buffer; } else { free(buffer); } return rc; } static int stonith_api_query(stonith_t * stonith, int call_options, const char *target, stonith_key_value_t ** devices, int timeout) { int rc = 0, lpc = 0, max = 0; xmlNode *data = NULL; xmlNode *output = NULL; xmlXPathObjectPtr xpathObj = NULL; CRM_CHECK(devices != NULL, return -EINVAL); data = create_xml_node(NULL, F_STONITH_DEVICE); crm_xml_add(data, "origin", __FUNCTION__); crm_xml_add(data, F_STONITH_TARGET, target); rc = stonith_send_command(stonith, STONITH_OP_QUERY, data, &output, call_options, timeout); if (rc < 0) { return rc; } xpathObj = xpath_search(output, "//@agent"); if (xpathObj) { max = xpathObj->nodesetval->nodeNr; for (lpc = 0; lpc < max; lpc++) { xmlNode *match = getXpathResult(xpathObj, lpc); CRM_CHECK(match != NULL, continue); crm_info("%s[%d] = %s", "//@agent", lpc, xmlGetNodePath(match)); *devices = stonith_key_value_add(*devices, NULL, crm_element_value(match, XML_ATTR_ID)); } } free_xml(output); free_xml(data); return max; } static int stonith_api_call(stonith_t * stonith, int call_options, const char *id, const char *action, const char *victim, int timeout, xmlNode **output) { int rc = 0; xmlNode *data = NULL; data = create_xml_node(NULL, F_STONITH_DEVICE); crm_xml_add(data, "origin", __FUNCTION__); crm_xml_add(data, F_STONITH_DEVICE, id); crm_xml_add(data, F_STONITH_ACTION, action); crm_xml_add(data, F_STONITH_TARGET, victim); rc = stonith_send_command(stonith, STONITH_OP_EXEC, data, output, call_options, timeout); free_xml(data); return rc; } static int stonith_api_list(stonith_t * stonith, int call_options, const char *id, char **list_info, int timeout) { int rc; xmlNode *output = NULL; rc = stonith_api_call(stonith, call_options, id, "list", NULL, timeout, &output); if (output && list_info) { const char *list_str; list_str = crm_element_value(output, "st_output"); if (list_str) { *list_info = strdup(list_str); } } if (output) { free_xml(output); } return rc; } static int stonith_api_monitor(stonith_t * stonith, int call_options, const char *id, int timeout) { return stonith_api_call(stonith, call_options, id, "monitor", NULL, timeout, NULL); } static int stonith_api_status(stonith_t * stonith, int call_options, const char *id, const char *port, int timeout) { return stonith_api_call(stonith, call_options, id, "status", port, timeout, NULL); } static int stonith_api_fence(stonith_t * stonith, int call_options, const char *node, const char *action, int timeout) { int 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; kvp = calloc(1, sizeof(stonith_history_t)); kvp->target = crm_element_value_copy(op, F_STONITH_TARGET); kvp->action = crm_element_value_copy(op, F_STONITH_ACTION); kvp->origin = crm_element_value_copy(op, F_STONITH_ORIGIN); kvp->delegate = crm_element_value_copy(op, F_STONITH_DELEGATE); crm_element_value_int(op, F_STONITH_DATE, &kvp->completed); crm_element_value_int(op, F_STONITH_STATE, &kvp->state); if (last) { last->next = kvp; } else { *history = kvp; } last = kvp; } } return rc; } gboolean is_redhat_agent(const char *agent) { int rc = 0; struct stat prop; char buffer[FILENAME_MAX + 1]; snprintf(buffer, FILENAME_MAX, "%s/%s", RH_STONITH_DIR, agent); rc = stat(buffer, &prop); if (rc >= 0 && S_ISREG(prop.st_mode)) { return TRUE; } return FALSE; } const char * get_stonith_provider(const char *agent, const char *provider) { /* This function sucks */ if (is_redhat_agent(agent)) { return "redhat"; #if HAVE_STONITH_STONITH_H } else { Stonith *stonith_obj = NULL; static gboolean need_init = TRUE; static Stonith *(*st_new_fn) (const char *) = NULL; static void (*st_del_fn) (Stonith *) = NULL; if(need_init) { need_init = FALSE; st_new_fn = find_library_function(&lha_agents_lib, LHA_STONITH_LIBRARY, "stonith_new", FALSE); st_del_fn = find_library_function(&lha_agents_lib, LHA_STONITH_LIBRARY, "stonith_delete", FALSE); } if (lha_agents_lib && st_new_fn && st_del_fn) { stonith_obj = (*st_new_fn) (agent); if(stonith_obj) { (*st_del_fn)(stonith_obj); return "heartbeat"; } } #endif } crm_err("No such device: %s", agent); return NULL; } static gint stonithlib_GCompareFunc(gconstpointer a, gconstpointer b) { int rc = 0; const stonith_notify_client_t *a_client = a; const stonith_notify_client_t *b_client = b; CRM_CHECK(a_client->event != NULL && b_client->event != NULL, return 0); rc = strcmp(a_client->event, b_client->event); if (rc == 0) { if (a_client->notify == NULL || b_client->notify == NULL) { return 0; } else if (a_client->notify == b_client->notify) { return 0; } else if (((long)a_client->notify) < ((long)b_client->notify)) { crm_err("callbacks for %s are not equal: %p vs. %p", a_client->event, a_client->notify, b_client->notify); return -1; } crm_err("callbacks for %s are not equal: %p vs. %p", a_client->event, a_client->notify, b_client->notify); return 1; } return rc; } xmlNode * stonith_create_op(int call_id, const char *token, const char *op, xmlNode * data, int call_options) { xmlNode *op_msg = create_xml_node(NULL, "stonith_command"); CRM_CHECK(op_msg != NULL, return NULL); CRM_CHECK(token != NULL, return NULL); crm_xml_add(op_msg, F_XML_TAGNAME, "stonith_command"); crm_xml_add(op_msg, F_TYPE, T_STONITH_NG); crm_xml_add(op_msg, F_STONITH_CALLBACK_TOKEN, token); crm_xml_add(op_msg, F_STONITH_OPERATION, op); crm_xml_add_int(op_msg, F_STONITH_CALLID, call_id); crm_trace("Sending call options: %.8lx, %d", (long)call_options, call_options); crm_xml_add_int(op_msg, F_STONITH_CALLOPTS, call_options); if (data != NULL) { add_message_xml(op_msg, F_STONITH_CALLDATA, data); } return op_msg; } static void stonith_destroy_op_callback(gpointer data) { stonith_callback_client_t *blob = data; if (blob->timer && blob->timer->ref > 0) { g_source_remove(blob->timer->ref); } free(blob->timer); free(blob); } static int stonith_api_signoff(stonith_t * stonith) { stonith_private_t *native = stonith->private; crm_debug("Signing out of the STONITH Service"); if (native->source != NULL) { /* Attached to mainloop */ mainloop_del_ipc_client(native->source); native->source = NULL; native->ipc = NULL; } else if(native->ipc) { /* Not attached to mainloop */ crm_ipc_t *ipc = native->ipc; native->ipc = NULL; crm_ipc_close(ipc); crm_ipc_destroy(ipc); } stonith->state = stonith_disconnected; return pcmk_ok; } static int stonith_api_signon(stonith_t * stonith, const char *name, int *stonith_fd) { int rc = pcmk_ok; stonith_private_t *native = stonith->private; static struct ipc_client_callbacks st_callbacks = { .dispatch = stonith_dispatch_internal, .destroy = stonith_connection_destroy }; crm_trace("Connecting command channel"); stonith->state = stonith_connected_command; if(stonith_fd) { /* No mainloop */ native->ipc = crm_ipc_new("stonith-ng", 0); if(native->ipc && crm_ipc_connect(native->ipc)) { *stonith_fd = crm_ipc_get_fd(native->ipc); } else if(native->ipc) { rc = -ENOTCONN; } } else { /* With mainloop */ native->source = mainloop_add_ipc_client("stonith-ng", G_PRIORITY_MEDIUM, 0, stonith, &st_callbacks); native->ipc = mainloop_get_ipc_client(native->source); } if (native->ipc == NULL) { crm_debug("Could not connect to the Stonith API"); rc = -ENOTCONN; } if (rc == pcmk_ok) { xmlNode *reply = NULL; xmlNode *hello = create_xml_node(NULL, "stonith_command"); crm_xml_add(hello, F_TYPE, T_STONITH_NG); crm_xml_add(hello, F_STONITH_OPERATION, CRM_OP_REGISTER); crm_xml_add(hello, F_STONITH_CLIENTNAME, name); rc = crm_ipc_send(native->ipc, hello, crm_ipc_client_response, -1, &reply); if(rc < 0) { crm_perror(LOG_DEBUG, "Couldn't complete registration with the fencing API: %d", rc); rc = -ECOMM; } else if(reply == NULL) { crm_err("Did not receive registration reply"); rc = -EPROTO; } else { const char *msg_type = crm_element_value(reply, F_STONITH_OPERATION); const char *tmp_ticket = crm_element_value(reply, F_STONITH_CLIENTID); if (safe_str_neq(msg_type, CRM_OP_REGISTER)) { crm_err("Invalid registration message: %s", msg_type); crm_log_xml_err(reply, "Bad reply"); rc = -EPROTO; } else if (tmp_ticket == NULL) { crm_err("No registration token provided"); crm_log_xml_err(reply, "Bad reply"); rc = -EPROTO; } else { crm_trace("Obtained registration token: %s", tmp_ticket); native->token = strdup(tmp_ticket); rc = pcmk_ok; } } free_xml(reply); free_xml(hello); } if (rc == pcmk_ok) { #if HAVE_MSGFROMIPC_TIMEOUT stonith->call_timeout = MAX_IPC_DELAY; #endif crm_debug("Connection to STONITH successful"); return pcmk_ok; } crm_debug("Connection to STONITH failed: %s", pcmk_strerror(rc)); stonith->cmds->disconnect(stonith); return rc; } static int stonith_set_notification(stonith_t * stonith, const char *callback, int enabled) { xmlNode *notify_msg = create_xml_node(NULL, __FUNCTION__); stonith_private_t *native = stonith->private; if (stonith->state != stonith_disconnected) { int rc; crm_xml_add(notify_msg, F_STONITH_OPERATION, T_STONITH_NOTIFY); if (enabled) { crm_xml_add(notify_msg, F_STONITH_NOTIFY_ACTIVATE, callback); } else { crm_xml_add(notify_msg, F_STONITH_NOTIFY_DEACTIVATE, callback); } rc = crm_ipc_send(native->ipc, notify_msg, crm_ipc_client_response, -1, NULL); if(rc < 0) { crm_perror(LOG_DEBUG, "Couldn't register for fencing notifications: %d", rc); rc = -ECOMM; } } free_xml(notify_msg); return pcmk_ok; } static int stonith_api_add_notification(stonith_t * stonith, const char *event, void (*callback) (stonith_t * stonith, stonith_event_t *e)) { GList *list_item = NULL; stonith_notify_client_t *new_client = NULL; stonith_private_t *private = NULL; private = stonith->private; crm_trace("Adding callback for %s events (%d)", event, g_list_length(private->notify_list)); new_client = calloc(1, sizeof(stonith_notify_client_t)); new_client->event = event; new_client->notify = callback; list_item = g_list_find_custom(private->notify_list, new_client, stonithlib_GCompareFunc); if (list_item != NULL) { crm_warn("Callback already present"); free(new_client); return -ENOTUNIQ; } else { private->notify_list = g_list_append(private->notify_list, new_client); stonith_set_notification(stonith, event, 1); crm_trace("Callback added (%d)", g_list_length(private->notify_list)); } return pcmk_ok; } static int stonith_api_del_notification(stonith_t * stonith, const char *event) { GList *list_item = NULL; stonith_notify_client_t *new_client = NULL; stonith_private_t *private = NULL; crm_debug("Removing callback for %s events", event); private = stonith->private; new_client = calloc(1, sizeof(stonith_notify_client_t)); new_client->event = event; new_client->notify = NULL; list_item = g_list_find_custom(private->notify_list, new_client, stonithlib_GCompareFunc); stonith_set_notification(stonith, event, 0); if (list_item != NULL) { stonith_notify_client_t *list_client = list_item->data; private->notify_list = g_list_remove(private->notify_list, list_client); free(list_client); crm_trace("Removed callback"); } else { crm_trace("Callback not present"); } free(new_client); return pcmk_ok; } static gboolean stonith_async_timeout_handler(gpointer data) { struct timer_rec_s *timer = data; crm_err("Async call %d timed out after %dms", timer->call_id, timer->timeout); stonith_perform_callback(timer->stonith, NULL, timer->call_id, -ETIME); /* Always return TRUE, never remove the handler * We do that in stonith_del_callback() */ return TRUE; } static void set_callback_timeout(stonith_callback_client_t *callback, stonith_t *stonith, int call_id, int timeout) { struct timer_rec_s *async_timer = callback->timer; if (timeout <= 0) { return; } if (!async_timer) { async_timer = calloc(1, sizeof(struct timer_rec_s)); callback->timer = async_timer; } async_timer->stonith = stonith; async_timer->call_id = call_id; /* Allow a fair bit of grace to allow the server to tell us of a timeout * This is only a fallback */ async_timer->timeout = (timeout + 60) * 1000; if (async_timer->ref) { g_source_remove(async_timer->ref); } async_timer->ref = g_timeout_add(async_timer->timeout, stonith_async_timeout_handler, async_timer); } static void update_callback_timeout(int call_id, int timeout, stonith_t *st) { stonith_callback_client_t *callback = NULL; stonith_private_t *private = st->private; callback = g_hash_table_lookup(private->stonith_op_callback_table, GINT_TO_POINTER(call_id)); if (!callback || !callback->allow_timeout_updates) { return; } set_callback_timeout(callback, st, call_id, timeout); } static void invoke_callback(stonith_t *st, int call_id, int rc, void *userdata, void (*callback) (stonith_t * st, stonith_callback_data_t *data)) { stonith_callback_data_t data = { 0, }; data.call_id = call_id; data.rc = rc; data.userdata = userdata; callback(st, &data); } static int stonith_api_add_callback(stonith_t * stonith, int call_id, int timeout, int options, void *user_data, const char *callback_name, void (*callback) (stonith_t * st, stonith_callback_data_t *data)) { stonith_callback_client_t *blob = NULL; stonith_private_t *private = NULL; CRM_CHECK(stonith != NULL, return -EINVAL); CRM_CHECK(stonith->private != NULL, return -EINVAL); private = stonith->private; if (call_id == 0) { private->op_callback = callback; } else if (call_id < 0) { if (!(options & st_opt_report_only_success)) { crm_trace("Call failed, calling %s: %s", callback_name, pcmk_strerror(call_id)); invoke_callback(stonith, call_id, call_id, user_data, callback); } else { crm_warn("STONITH call failed: %s", pcmk_strerror(call_id)); } return FALSE; } blob = calloc(1, sizeof(stonith_callback_client_t)); blob->id = callback_name; blob->only_success = (options & st_opt_report_only_success) ? TRUE : FALSE; blob->user_data = user_data; blob->callback = callback; blob->allow_timeout_updates = (options & st_opt_timeout_updates) ? TRUE : FALSE; if (timeout > 0) { set_callback_timeout(blob, stonith, call_id, timeout); } g_hash_table_insert(private->stonith_op_callback_table, GINT_TO_POINTER(call_id), blob); crm_trace("Added callback to %s for call %d", callback_name, call_id); return TRUE; } static int stonith_api_del_callback(stonith_t * stonith, int call_id, bool all_callbacks) { stonith_private_t *private = stonith->private; if (all_callbacks) { private->op_callback = NULL; g_hash_table_destroy(private->stonith_op_callback_table); private->stonith_op_callback_table = g_hash_table_new_full(g_direct_hash, g_direct_equal, NULL, stonith_destroy_op_callback); } else if (call_id == 0) { private->op_callback = NULL; } else { g_hash_table_remove(private->stonith_op_callback_table, GINT_TO_POINTER(call_id)); } return pcmk_ok; } static void stonith_dump_pending_op(gpointer key, gpointer value, gpointer user_data) { int call = GPOINTER_TO_INT(key); stonith_callback_client_t *blob = value; crm_debug("Call %d (%s): pending", call, crm_str(blob->id)); } void stonith_dump_pending_callbacks(stonith_t * stonith) { stonith_private_t *private = stonith->private; if (private->stonith_op_callback_table == NULL) { return; } return g_hash_table_foreach(private->stonith_op_callback_table, stonith_dump_pending_op, NULL); } void stonith_perform_callback(stonith_t * stonith, xmlNode * msg, int call_id, int rc) { stonith_private_t *private = NULL; stonith_callback_client_t *blob = NULL; stonith_callback_client_t local_blob; CRM_CHECK(stonith != NULL, return); CRM_CHECK(stonith->private != NULL, return); private = stonith->private; local_blob.id = NULL; local_blob.callback = NULL; local_blob.user_data = NULL; local_blob.only_success = FALSE; if (msg != NULL) { crm_element_value_int(msg, F_STONITH_RC, &rc); crm_element_value_int(msg, F_STONITH_CALLID, &call_id); } CRM_CHECK(call_id > 0, crm_log_xml_err(msg, "Bad result")); blob = g_hash_table_lookup(private->stonith_op_callback_table, GINT_TO_POINTER(call_id)); if (blob != NULL) { local_blob = *blob; blob = NULL; stonith_api_del_callback(stonith, call_id, FALSE); } else { crm_trace("No callback found for call %d", call_id); local_blob.callback = NULL; } if (local_blob.callback != NULL && (rc == pcmk_ok || local_blob.only_success == FALSE)) { crm_trace("Invoking callback %s for call %d", crm_str(local_blob.id), call_id); invoke_callback(stonith, call_id, rc, local_blob.user_data, local_blob.callback); } else if (private->op_callback == NULL && rc != pcmk_ok) { crm_warn("STONITH command failed: %s", pcmk_strerror(rc)); crm_log_xml_debug(msg, "Failed STONITH Update"); } if (private->op_callback != NULL) { crm_trace("Invoking global callback for call %d", call_id); invoke_callback(stonith, call_id, rc, NULL, private->op_callback); } crm_trace("OP callback activated."); } /* */ 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->target = crm_element_value_copy(data, F_STONITH_TARGET); event->executioner = crm_element_value_copy(data, F_STONITH_DELEGATE); event->id = crm_element_value_copy(data, F_STONITH_REMOTE); event->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->target); free(event->executioner); free(event->device); free(event->client_origin); } static void stonith_send_notification(gpointer data, gpointer user_data) { struct notify_blob_s *blob = user_data; stonith_notify_client_t *entry = data; stonith_event_t *st_event = NULL; const char *event = NULL; if (blob->xml == NULL) { crm_warn("Skipping callback - NULL message"); return; } event = crm_element_value(blob->xml, F_SUBTYPE); if (entry == NULL) { crm_warn("Skipping callback - NULL callback client"); return; } else if (entry->notify == NULL) { crm_warn("Skipping callback - NULL callback"); return; } else if (safe_str_neq(entry->event, event)) { crm_trace("Skipping callback - event mismatch %p/%s vs. %s", entry, entry->event, event); return; } st_event = xml_to_event(blob->xml); crm_trace("Invoking callback for %p/%s event...", entry, event); entry->notify(blob->stonith, st_event); crm_trace("Callback invoked..."); event_free(st_event); } int stonith_send_command(stonith_t * stonith, const char *op, xmlNode * data, xmlNode ** output_data, int call_options, int timeout) { int rc = 0; int reply_id = -1; enum crm_ipc_flags ipc_flags = crm_ipc_client_none; xmlNode *op_msg = NULL; xmlNode *op_reply = NULL; stonith_private_t *native = stonith->private; if (stonith->state == stonith_disconnected) { return -ENOTCONN; } if (output_data != NULL) { *output_data = NULL; } if (op == NULL) { crm_err("No operation specified"); return -EINVAL; } if (call_options & st_opt_sync_call) { ipc_flags |= crm_ipc_client_response; } stonith->call_id++; /* prevent call_id from being negative (or zero) and conflicting * with the stonith_errors enum * use 2 because we use it as (stonith->call_id - 1) below */ if (stonith->call_id < 1) { stonith->call_id = 1; } CRM_CHECK(native->token != NULL,;); op_msg = stonith_create_op(stonith->call_id, native->token, op, data, call_options); if (op_msg == NULL) { return -EINVAL; } crm_xml_add_int(op_msg, F_STONITH_TIMEOUT, timeout); crm_trace("Sending %s message to STONITH service, Timeout: %ds", op, timeout); rc = crm_ipc_send(native->ipc, op_msg, ipc_flags, 1000*(timeout + 60), &op_reply); free_xml(op_msg); if(rc < 0) { crm_perror(LOG_ERR, "Couldn't perform %s operation (timeout=%ds): %d", op, timeout, rc); rc = -ECOMM; goto done; } crm_log_xml_trace(op_reply, "Reply"); if (!(call_options & st_opt_sync_call)) { crm_trace("Async call %d, returning", stonith->call_id); CRM_CHECK(stonith->call_id != 0, return -EPROTO); free_xml(op_reply); return stonith->call_id; } rc = pcmk_ok; crm_element_value_int(op_reply, F_STONITH_CALLID, &reply_id); if (reply_id == stonith->call_id) { crm_trace("Syncronous reply %d received", reply_id); if (crm_element_value_int(op_reply, F_STONITH_RC, &rc) != 0) { rc = -ENOMSG; } if ((call_options & st_opt_discard_reply) || output_data == NULL) { crm_trace("Discarding reply"); } else { *output_data = op_reply; op_reply = NULL; /* Prevent subsequent free */ } } else if (reply_id <= 0) { crm_err("Recieved bad reply: No id set"); crm_log_xml_err(op_reply, "Bad reply"); free_xml(op_reply); rc = -ENOMSG; } else { crm_err("Recieved bad reply: %d (wanted %d)", reply_id, stonith->call_id); crm_log_xml_err(op_reply, "Old reply"); free_xml(op_reply); rc = -ENOMSG; } done: if (crm_ipc_connected(native->ipc) == FALSE) { crm_err("STONITH disconnected"); stonith->state = stonith_disconnected; } free_xml(op_reply); return rc; } /* Not used with mainloop */ bool stonith_dispatch(stonith_t * st) { gboolean stay_connected = TRUE; stonith_private_t *private = NULL; CRM_ASSERT(st != NULL); private = st->private; while(crm_ipc_ready(private->ipc)) { if(crm_ipc_read(private->ipc) > 0) { const char *msg = crm_ipc_buffer(private->ipc); stonith_dispatch_internal(msg, strlen(msg), st); } if(crm_ipc_connected(private->ipc) == FALSE) { crm_err("Connection closed"); stay_connected = FALSE; } } return stay_connected; } int stonith_dispatch_internal(const char *buffer, ssize_t length, gpointer userdata) { const char *type = NULL; struct notify_blob_s blob; stonith_t * st = userdata; stonith_private_t *private = NULL; CRM_ASSERT(st != NULL); private = st->private; blob.stonith = st; blob.xml = string2xml(buffer); if (blob.xml == NULL) { crm_warn("Received a NULL msg from STONITH service: %s.", buffer); return 0; } /* do callbacks */ type = crm_element_value(blob.xml, F_TYPE); crm_trace("Activating %s callbacks...", type); if (safe_str_eq(type, T_STONITH_NG)) { stonith_perform_callback(st, blob.xml, 0, 0); } else if (safe_str_eq(type, T_STONITH_NOTIFY)) { g_list_foreach(private->notify_list, stonith_send_notification, &blob); } else if (safe_str_eq(type, T_STONITH_TIMEOUT_VALUE)) { int call_id = 0; int timeout = 0; crm_element_value_int(blob.xml, F_STONITH_TIMEOUT, &timeout); crm_element_value_int(blob.xml, F_STONITH_CALLID, &call_id); update_callback_timeout(call_id, timeout, st); } else { crm_err("Unknown message type: %s", type); crm_log_xml_warn(blob.xml, "BadReply"); } free_xml(blob.xml); return 1; } static int stonith_api_free(stonith_t * stonith) { int rc = pcmk_ok; if (stonith->state != stonith_disconnected) { rc = stonith->cmds->disconnect(stonith); } if (stonith->state == stonith_disconnected) { stonith_private_t *private = stonith->private; g_hash_table_destroy(private->stonith_op_callback_table); free(private->token); free(stonith->private); free(stonith->cmds); free(stonith); } return rc; } void stonith_api_delete(stonith_t * stonith) { stonith_private_t *private = stonith->private; GList *list = private->notify_list; while (list != NULL) { stonith_notify_client_t *client = g_list_nth_data(list, 0); list = g_list_remove(list, client); free(client); } stonith->cmds->free(stonith); stonith = NULL; } stonith_t * stonith_api_new(void) { stonith_t *new_stonith = NULL; stonith_private_t *private = NULL; new_stonith = calloc(1, sizeof(stonith_t)); private = calloc(1, sizeof(stonith_private_t)); new_stonith->private = private; private->stonith_op_callback_table = g_hash_table_new_full(g_direct_hash, g_direct_equal, NULL, stonith_destroy_op_callback); private->notify_list = NULL; new_stonith->call_id = 1; new_stonith->state = stonith_disconnected; new_stonith->cmds = calloc(1, sizeof(stonith_api_operations_t)); /* *INDENT-OFF* */ new_stonith->cmds->free = stonith_api_free; new_stonith->cmds->connect = stonith_api_signon; new_stonith->cmds->disconnect = stonith_api_signoff; new_stonith->cmds->list = stonith_api_list; new_stonith->cmds->monitor = stonith_api_monitor; new_stonith->cmds->status = stonith_api_status; new_stonith->cmds->fence = stonith_api_fence; new_stonith->cmds->confirm = stonith_api_confirm; new_stonith->cmds->history = stonith_api_history; new_stonith->cmds->list_agents = stonith_api_device_list; new_stonith->cmds->metadata = stonith_api_device_metadata; new_stonith->cmds->query = stonith_api_query; new_stonith->cmds->remove_device = stonith_api_remove_device; new_stonith->cmds->register_device = stonith_api_register_device; new_stonith->cmds->remove_level = stonith_api_remove_level; new_stonith->cmds->register_level = stonith_api_register_level; new_stonith->cmds->remove_callback = stonith_api_del_callback; new_stonith->cmds->register_callback = stonith_api_add_callback; new_stonith->cmds->remove_notification = stonith_api_del_notification; new_stonith->cmds->register_notification = stonith_api_add_notification; /* *INDENT-ON* */ return new_stonith; } stonith_key_value_t * stonith_key_value_add(stonith_key_value_t * head, const char *key, const char *value) { stonith_key_value_t *p, *end; p = calloc(1, sizeof(stonith_key_value_t)); if (key) { p->key = strdup(key); } if (value) { p->value = strdup(value); } end = head; while (end && end->next) { end = end->next; } if (end) { end->next = p; } else { head = p; } return head; } void stonith_key_value_freeall(stonith_key_value_t * head, int keys, int values) { stonith_key_value_t *p; while (head) { p = head->next; if (keys) { free(head->key); } if (values) { free(head->value); } free(head); head = p; } } int stonith_api_kick(int nodeid, const char *uname, int timeout, bool off) { char *name = NULL; const char *action = "reboot"; int rc = -EPROTO; stonith_t *st = NULL; enum stonith_call_options opts = st_opt_sync_call | st_opt_allow_suicide; st = stonith_api_new(); if (st) { rc = st->cmds->connect(st, "stonith-api", NULL); } if (uname != NULL) { name = strdup(uname); } else if (nodeid > 0) { opts |= st_opt_cs_nodeid; name = crm_itoa(nodeid); } if (off) { action = "off"; } if (rc == pcmk_ok) { rc = st->cmds->fence(st, opts, name, action, timeout); } if (st) { st->cmds->disconnect(st); stonith_api_delete(st); } free(name); return rc; } time_t stonith_api_time(int nodeid, const char *uname, bool in_progress) { int rc = 0; char *name = NULL; time_t when = 0; time_t progress = 0; stonith_t *st = NULL; stonith_history_t *history, *hp = NULL; enum stonith_call_options opts = st_opt_sync_call; st = stonith_api_new(); if (st) { rc = st->cmds->connect(st, "stonith-api", NULL); } if (uname != NULL) { name = strdup(uname); } else if (nodeid > 0) { opts |= st_opt_cs_nodeid; name = crm_itoa(nodeid); } if (st && rc == pcmk_ok) { st->cmds->history(st, st_opt_sync_call | st_opt_cs_nodeid, name, &history, 120); for (hp = history; hp; hp = hp->next) { if (in_progress) { if (hp->state != st_done && hp->state != st_failed) { progress = time(NULL); } } else if (hp->state == st_done) { when = hp->completed; } } } if (progress) { when = progress; } if (st) { st->cmds->disconnect(st); stonith_api_delete(st); } free(name); return when; }