diff --git a/lib/services/upstart.c b/lib/services/upstart.c index 831e7cf050..195c3a473f 100644 --- a/lib/services/upstart.c +++ b/lib/services/upstart.c @@ -1,529 +1,539 @@ /* * 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 2.1 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * File: upstart-dbus.c * Copyright (C) 2010 Senko Rasic * Copyright (c) 2010 Ante Karamatic * * * Each exported function is standalone, and creates a new connection to * the upstart daemon. This is because lrmd plugins fork off for exec, * and if we try and share the connection, the whole thing blocks * indefinitely. */ #include #include #include #include #include #include #include #include #include #define BUS_NAME "com.ubuntu.Upstart" #define BUS_PATH "/com/ubuntu/Upstart" #define BUS_MANAGER_IFACE BUS_NAME"0_6" #define BUS_PROPERTY_IFACE "org.freedesktop.DBus.Properties" /* http://upstart.ubuntu.com/wiki/DBusInterface */ static GDBusProxy *upstart_proxy = NULL; static GDBusProxy * get_proxy(const char *path, const char *interface) { GError *error = NULL; GDBusProxy *proxy = NULL; #ifndef GLIB_DEPRECATED_IN_2_36 g_type_init(); #endif if (path == NULL) { path = BUS_PATH; } proxy = g_dbus_proxy_new_for_bus_sync(G_BUS_TYPE_SYSTEM, G_DBUS_PROXY_FLAGS_NONE, NULL, /* GDBusInterfaceInfo */ BUS_NAME, path, interface, NULL, /* GCancellable */ &error); if (error) { crm_err("Can't connect obtain proxy to %s interface: %s", interface, error->message); g_error_free(error); proxy = NULL; } return proxy; } static gboolean upstart_init(void) { static int need_init = 1; if (need_init) { need_init = 0; upstart_proxy = get_proxy(NULL, BUS_MANAGER_IFACE); } if (upstart_proxy == NULL) { return FALSE; } return TRUE; } void upstart_cleanup(void) { if (upstart_proxy) { g_object_unref(upstart_proxy); upstart_proxy = NULL; } } static gboolean upstart_job_by_name(GDBusProxy * proxy, const gchar * arg_name, gchar ** out_unit, GCancellable * cancellable, GError ** error) { /* com.ubuntu.Upstart0_6.GetJobByName (in String name, out ObjectPath job) */ GVariant *_ret = g_dbus_proxy_call_sync(proxy, "GetJobByName", g_variant_new("(s)", arg_name), G_DBUS_CALL_FLAGS_NONE, -1, cancellable, error); if (_ret) { g_variant_get(_ret, "(o)", out_unit); g_variant_unref(_ret); } return _ret != NULL; } static void fix(char *input, const char *search, char replace) { char *match = NULL; int shuffle = strlen(search) - 1; while (TRUE) { int len, lpc; match = strstr(input, search); if (match == NULL) { break; } crm_err("Found: %s", match); match[0] = replace; len = strlen(match) - shuffle; for (lpc = 1; lpc <= len; lpc++) { match[lpc] = match[lpc + shuffle]; } } } static char * fix_upstart_name(const char *input) { char *output = strdup(input); fix(output, "_2b", '+'); fix(output, "_2c", ','); fix(output, "_2d", '-'); fix(output, "_2e", '.'); fix(output, "_40", '@'); fix(output, "_5f", '_'); return output; } GList * upstart_job_listall(void) { GList *units = NULL; GError *error = NULL; GVariantIter *iter; char *path = NULL; GVariant *_ret = NULL; int lpc = 0; if (upstart_init() == FALSE) { return NULL; } /* com.ubuntu.Upstart0_6.GetAllJobs (out jobs) */ _ret = g_dbus_proxy_call_sync(upstart_proxy, "GetAllJobs", g_variant_new("()"), G_DBUS_CALL_FLAGS_NONE, -1, NULL, &error); if (error) { crm_info("Call to GetAllJobs failed: %s", error->message); g_error_free(error); return NULL; } g_variant_get(_ret, "(ao)", &iter); while (g_variant_iter_loop(iter, "o", &path)) { int llpc = 0; const char *job = path; while (path[llpc] != 0) { if (path[llpc] == '/') { job = path + llpc + 1; } llpc++; } lpc++; crm_trace("%s\n", path); units = g_list_append(units, fix_upstart_name(job)); } crm_info("Call to GetAllJobs passed: type '%s', count %d", g_variant_get_type_string(_ret), lpc); g_variant_iter_free(iter); g_variant_unref(_ret); return units; } gboolean upstart_job_exists(const char *name) { char *path = NULL; GError *error = NULL; gboolean pass = FALSE; if (upstart_init() == FALSE) { return FALSE; } pass = upstart_job_by_name(upstart_proxy, name, &path, NULL, &error); if (error) { crm_trace("Call to ListUnits failed: %s", error->message); g_error_free(error); pass = FALSE; } else if (pass) { crm_trace("Got %s", path); } /* free(path) */ return pass; } static char * upstart_job_property(const char *obj, const gchar * iface, const char *name) { + char *output = NULL; + +#if !GLIB_CHECK_VERSION(2,28,0) + static bool err = TRUE; + + if(err) { + crm_err("This version of glib is too old to support upstart jobs"); + err = FALSE; + } +#else GError *error = NULL; GDBusProxy *proxy; GVariant *asv = NULL; GVariant *value = NULL; GVariant *_ret = NULL; - char *output = NULL; crm_info("Calling GetAll on %s", obj); proxy = get_proxy(obj, BUS_PROPERTY_IFACE); if (!proxy) { return NULL; } _ret = g_dbus_proxy_call_sync(proxy, "GetAll", g_variant_new("(s)", iface), G_DBUS_CALL_FLAGS_NONE, -1, NULL, &error); if (error) { crm_err("Cannot get properties for %s: %s", g_dbus_proxy_get_object_path(proxy), error->message); g_error_free(error); g_object_unref(proxy); return NULL; } crm_info("Call to GetAll passed: type '%s' %d\n", g_variant_get_type_string(_ret), g_variant_n_children(_ret)); asv = g_variant_get_child_value(_ret, 0); crm_trace("asv type '%s' %d\n", g_variant_get_type_string(asv), g_variant_n_children(asv)); value = g_variant_lookup_value(asv, name, NULL); if (value && g_variant_is_of_type(value, G_VARIANT_TYPE_STRING)) { crm_info("Got value '%s' for %s[%s]", g_variant_get_string(value, NULL), obj, name); output = g_variant_dup_string(value, NULL); } else { crm_info("No value for %s[%s]", obj, name); } g_object_unref(proxy); g_variant_unref(_ret); +#endif return output; } static char * get_first_instance(const gchar * job) { char *instance = NULL; GError *error = NULL; GDBusProxy *proxy = get_proxy(job, BUS_MANAGER_IFACE ".Job"); GVariant *_ret = g_dbus_proxy_call_sync(proxy, "GetAllInstances", g_variant_new("()"), G_DBUS_CALL_FLAGS_NONE, -1, NULL, &error); if (error) { crm_err("Cannot call GetAllInstances for %s: %s", job, error->message); g_error_free(error); return NULL; } crm_trace("Call to GetAllInstances passed: type '%s' %d\n", g_variant_get_type_string(_ret), g_variant_n_children(_ret)); if (g_variant_n_children(_ret)) { GVariant *tmp1 = g_variant_get_child_value(_ret, 0); if (g_variant_n_children(tmp1)) { GVariant *tmp2 = g_variant_get_child_value(tmp1, 0); instance = g_variant_dup_string(tmp2, NULL); } } crm_info("Result: %s", instance); g_variant_unref(_ret); return instance; } gboolean upstart_job_running(const gchar * name) { char *job = NULL; GError *error = NULL; gboolean pass = FALSE; pass = upstart_job_by_name(upstart_proxy, name, &job, NULL, &error); if (error || pass == FALSE) { crm_err("Call to ListUnits failed: %s", error ? error->message : "unknown"); if(error) { g_error_free(error); } } else { char *instance = get_first_instance(job); pass = FALSE; if (instance) { if (instance) { char *state = upstart_job_property(instance, BUS_MANAGER_IFACE ".Instance", "state"); crm_info("State of %s: %s", name, state); if (state) { pass = !g_strcmp0(state, "running"); } free(state); } } free(instance); } crm_info("%s is%s running", name, pass ? "" : " not"); return pass; } static char * upstart_job_metadata(const char *name) { return g_strdup_printf("\n" "\n" "\n" " 1.0\n" " \n" " Upstart agent for controlling the system %s service\n" " \n" " %s upstart agent\n" " \n" " \n" " \n" " \n" " \n" " \n" " \n" " \n" " \n" " \n" " \n" " \n" "\n", name, name, name); } static void upstart_job_exec_done(GObject * source_object, GAsyncResult * res, gpointer user_data) { GError *error = NULL; GVariant *_ret = NULL; svc_action_t *op = user_data; GDBusProxy *proxy = G_DBUS_PROXY(source_object); /* Obtain rc and stderr/out */ _ret = g_dbus_proxy_call_finish(proxy, res, &error); if (error) { /* ignore "already started" or "not running" errors */ if (safe_str_eq(op->action, "start") && strstr(error->message, BUS_MANAGER_IFACE ".Error.AlreadyStarted")) { crm_trace("Masking Start failure for %s: already started", op->rsc); op->rc = PCMK_OCF_OK; } else if (safe_str_eq(op->action, "stop") && strstr(error->message, BUS_MANAGER_IFACE ".Error.UnknownInstance")) { crm_trace("Masking Stop failure for %s: unknown services are stopped", op->rsc); op->rc = PCMK_OCF_OK; } else { crm_err("Could not issue %s for %s: %s", op->action, op->rsc, error->message); } g_error_free(error); } else if(g_variant_is_of_type (_ret, G_VARIANT_TYPE("(o)"))) { char *path = NULL; g_variant_get(_ret, "(o)", &path); crm_info("Call to %s passed: type '%s' %s", op->action, g_variant_get_type_string(_ret), path); op->rc = PCMK_OCF_OK; } else { crm_err("Call to %s passed but return type was '%s' not '(o)'", op->action, g_variant_get_type_string(_ret)); op->rc = PCMK_OCF_OK; } operation_finalize(op); g_object_unref(proxy); if (_ret) { g_variant_unref(_ret); } } gboolean upstart_job_exec(svc_action_t * op, gboolean synchronous) { char *job = NULL; GError *error = NULL; gboolean pass = FALSE; gchar *no_args[] = { NULL }; const char *action = op->action; GVariant *_ret = NULL; GDBusProxy *job_proxy = NULL; op->rc = PCMK_OCF_UNKNOWN_ERROR; CRM_ASSERT(upstart_init()); if (safe_str_eq(op->action, "meta-data")) { op->stdout_data = upstart_job_metadata(op->agent); op->rc = PCMK_OCF_OK; goto cleanup; } pass = upstart_job_by_name(upstart_proxy, op->agent, &job, NULL, &error); if (error) { crm_debug("Could not obtain job named '%s': %s", op->agent, error->message); pass = FALSE; } if (pass == FALSE) { if (!g_strcmp0(action, "stop")) { op->rc = PCMK_OCF_OK; } else { op->rc = PCMK_OCF_NOT_INSTALLED; op->status = PCMK_LRM_OP_NOT_INSTALLED; } goto cleanup; } if (safe_str_eq(op->action, "monitor") || safe_str_eq(action, "status")) { if (upstart_job_running(op->agent)) { op->rc = PCMK_OCF_OK; } else { op->rc = PCMK_OCF_NOT_RUNNING; } goto cleanup; } else if (!g_strcmp0(action, "start")) { action = "Start"; } else if (!g_strcmp0(action, "stop")) { action = "Stop"; } else if (!g_strcmp0(action, "restart")) { action = "Restart"; } else { op->rc = PCMK_OCF_UNIMPLEMENT_FEATURE; goto cleanup; } job_proxy = get_proxy(job, BUS_MANAGER_IFACE ".Job"); crm_debug("Calling %s for %s: %s", action, op->rsc, job); if (synchronous == FALSE) { g_dbus_proxy_call(job_proxy, action, g_variant_new("(^asb)", no_args, TRUE), G_DBUS_CALL_FLAGS_NONE, op->timeout, NULL, upstart_job_exec_done, op); free(job); return TRUE; } _ret = g_dbus_proxy_call_sync(job_proxy, action, g_variant_new("(^asb)", no_args, TRUE), G_DBUS_CALL_FLAGS_NONE, op->timeout, NULL, &error); if (error) { /* ignore "already started" or "not running" errors */ if (safe_str_eq(action, "Start") && strstr(error->message, BUS_MANAGER_IFACE ".Error.AlreadyStarted")) { crm_trace("Masking Start failure for %s: already started", op->rsc); op->rc = PCMK_OCF_OK; } else if (safe_str_eq(action, "Stop") && strstr(error->message, BUS_MANAGER_IFACE ".Error.UnknownInstance")) { crm_trace("Masking Stop failure for %s: unknown services are stopped", op->rsc); op->rc = PCMK_OCF_OK; } else { crm_err("Could not issue %s for %s: %s (%s)", action, op->rsc, error->message, job); } } else if(g_variant_is_of_type (_ret, G_VARIANT_TYPE("(o)"))) { char *path = NULL; g_variant_get(_ret, "(o)", &path); crm_info("Call to %s passed: type '%s' %s", op->action, g_variant_get_type_string(_ret), path); op->rc = PCMK_OCF_OK; } else { crm_err("Call to %s passed but return type was '%s' not '(o)'", op->action, g_variant_get_type_string(_ret)); op->rc = PCMK_OCF_OK; } cleanup: free(job); if (error) { g_error_free(error); } if (job_proxy) { g_object_unref(job_proxy); } if (_ret) { g_variant_unref(_ret); } if (synchronous == FALSE) { operation_finalize(op); return TRUE; } return op->rc == PCMK_OCF_OK; }