+++ /dev/null
-/***
- This file is part of systemd.
-
- Copyright 2013 Daniel Mack
-
- systemd 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.
-
- systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <stdlib.h>
-#include <stdbool.h>
-#include <unistd.h>
-#include <getopt.h>
-#include <locale.h>
-#include <string.h>
-#include <poll.h>
-#include <netdb.h>
-#include <sys/socket.h>
-#include <sys/un.h>
-#include <sys/timex.h>
-#include <sys/utsname.h>
-
-#include "kdbus.h"
-#include "sd-bus.h"
-#include "bus-internal.h"
-#include "sd-daemon.h"
-#include "sd-event.h"
-#include "event-util.h"
-#include "bus-util.h"
-#include "bus-error.h"
-#include "bus-message.h"
-#include "bus-kernel.h"
-#include "socket-util.h"
-#include "util.h"
-#include "build.h"
-#include "strv.h"
-#include "sd-id128.h"
-#include "async.h"
-#include "hashmap.h"
-#include "def.h"
-#include "unit-name.h"
-#include "bus-control.h"
-#include "cgroup-util.h"
-
-#define CLIENTS_MAX 1024
-#define MATCHES_MAX 1024
-
-typedef struct Match Match;
-typedef struct Client Client;
-typedef struct Context Context;
-
-struct Match {
- Client *client;
- char *match;
- uint64_t cookie;
- LIST_FIELDS(Match, matches);
-};
-
-struct Client {
- Context *context;
- uint64_t id;
- uint64_t next_cookie;
- Hashmap *matches;
- unsigned n_matches;
- char *watch;
-};
-
-struct Context {
- sd_bus *bus;
- sd_event *event;
- Hashmap *clients;
-};
-
-static void match_free(Match *m) {
-
- if (!m)
- return;
-
- if (m->client) {
- Match *first;
-
- first = hashmap_get(m->client->matches, m->match);
- LIST_REMOVE(matches, first, m);
- if (first)
- assert_se(hashmap_replace(m->client->matches, first->match, first) >= 0);
- else
- hashmap_remove(m->client->matches, m->match);
-
- m->client->n_matches--;
- }
-
- free(m->match);
- free(m);
-}
-
-static int match_new(Client *c, struct bus_match_component *components, unsigned n_components, Match **_m) {
- Match *m, *first;
- int r;
-
- assert(c);
- assert(_m);
-
- r = hashmap_ensure_allocated(&c->matches, string_hash_func, string_compare_func);
- if (r < 0)
- return r;
-
- m = new0(Match, 1);
- if (!m)
- return -ENOMEM;
-
- m->match = bus_match_to_string(components, n_components);
- if (!m->match) {
- r = -ENOMEM;
- goto fail;
- }
-
- m->cookie = ++c->next_cookie;
-
- first = hashmap_get(c->matches, m->match);
- LIST_PREPEND(matches, first, m);
- r = hashmap_replace(c->matches, m->match, first);
- if (r < 0) {
- LIST_REMOVE(matches, first, m);
- goto fail;
- }
-
- m->client = c;
- c->n_matches++;
-
- *_m = m;
- m = NULL;
-
- return 0;
-
-fail:
- match_free(m);
- return r;
-}
-
-static int on_name_owner_changed(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *error);
-
-static void client_free(Client *c) {
- Match *m;
-
- if (!c)
- return;
-
- if (c->context) {
- if (c->watch)
- sd_bus_remove_match(c->context->bus, c->watch, on_name_owner_changed, c);
-
- assert_se(hashmap_remove(c->context->clients, &c->id) == c);
- }
-
- while ((m = hashmap_first(c->matches)))
- match_free(m);
-
- hashmap_free(c->matches);
- free(c->watch);
-
- free(c);
-}
-
-static int on_name_owner_changed(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *error) {
- Client *c = userdata;
-
- assert(bus);
- assert(m);
-
- client_free(c);
- return 0;
-}
-
-static int client_acquire(Context *context, uint64_t id, Client **_c) {
- char *watch = NULL;
- Client *c;
- int r;
-
- assert(context);
- assert(_c);
-
- c = hashmap_get(context->clients, &id);
- if (c) {
- *_c = c;
- return 0;
- }
-
- if (hashmap_size(context->clients) >= CLIENTS_MAX)
- return -ENOBUFS;
-
- r = hashmap_ensure_allocated(&context->clients, uint64_hash_func, uint64_compare_func);
- if (r < 0)
- return r;
-
- c = new0(Client, 1);
- if (!c)
- return -ENOMEM;
-
- c->id = id;
-
- r = hashmap_put(context->clients, &c->id, c);
- if (r < 0)
- goto fail;
-
- c->context = context;
-
- if (asprintf(&watch,
- "type='signal',"
- "sender='org.freedesktop.DBus',"
- "path='/org/freedesktop/DBus',"
- "interface='org.freedesktop.DBus',"
- "member='NameOwnerChanged',"
- "arg0=':1.%llu'", (unsigned long long) id) < 0) {
- r = -ENOMEM;
- goto fail;
- }
-
- r = sd_bus_add_match(context->bus, watch, on_name_owner_changed, c);
- if (r < 0) {
- free(watch);
- goto fail;
- }
-
- c->watch = watch;
-
- *_c = c;
- return 0;
-
-fail:
- client_free(c);
- return r;
-}
-
-static int driver_add_match(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
-
- struct bus_match_component *components = NULL;
- Context *context = userdata;
- unsigned n_components = 0;
- Match *m = NULL;
- Client *c = NULL;
- char *arg0;
- uint64_t id;
- int r;
-
- assert(bus);
- assert(message);
- assert(context);
-
- r = sd_bus_message_read(message, "s", &arg0);
- if (r < 0)
- return r;
-
- r = bus_kernel_parse_unique_name(message->sender, &id);
- if (r < 0)
- return r;
-
- r = client_acquire(context, id, &c);
- if (r == -ENOBUFS)
- return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED, "Reached limit of %u clients", CLIENTS_MAX);
- if (r < 0)
- return r;
-
- if (c->n_matches >= MATCHES_MAX) {
- r = sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED, "Reached limit of %u matches per client", MATCHES_MAX);
- goto fail;
- }
-
- r = bus_match_parse(arg0, &components, &n_components);
- if (r < 0) {
- r = sd_bus_error_setf(error, SD_BUS_ERROR_MATCH_RULE_INVALID, "Match rule \"%s\" is not valid", arg0);
- goto fail;
- }
-
- r = match_new(c, components, n_components, &m);
- if (r < 0)
- goto fail;
-
- r = bus_add_match_internal_kernel(bus, id, components, n_components, m->cookie);
- if (r < 0)
- goto fail;
-
- bus_match_parse_free(components, n_components);
-
- return sd_bus_reply_method_return(message, NULL);
-
-fail:
- bus_match_parse_free(components, n_components);
-
- match_free(m);
-
- if (c->n_matches <= 0)
- client_free(c);
-
- return r;
-}
-
-static int driver_remove_match(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
-
- struct bus_match_component *components = NULL;
- _cleanup_free_ char *normalized = NULL;
- Context *context = userdata;
- unsigned n_components = 0;
- Client *c = NULL;
- Match *m = NULL;
- char *arg0;
- uint64_t id;
- int r;
-
- assert(bus);
- assert(message);
- assert(context);
-
- r = sd_bus_message_read(message, "s", &arg0);
- if (r < 0)
- return r;
-
- r = bus_kernel_parse_unique_name(message->sender, &id);
- if (r < 0)
- return r;
-
- c = hashmap_get(context->clients, &id);
- if (!c)
- return sd_bus_error_setf(error, SD_BUS_ERROR_MATCH_RULE_NOT_FOUND, "You have not registered any matches.");
-
- r = bus_match_parse(arg0, &components, &n_components);
- if (r < 0) {
- r = sd_bus_error_setf(error, SD_BUS_ERROR_MATCH_RULE_INVALID, "Match rule \"%s\" is not valid", arg0);
- goto finish;
- }
-
- normalized = bus_match_to_string(components, n_components);
- if (!normalized) {
- r = -ENOMEM;
- goto finish;
- }
-
- m = hashmap_get(c->matches, normalized);
- if (!m) {
- r = sd_bus_error_setf(error, SD_BUS_ERROR_MATCH_RULE_NOT_FOUND, "Match rule \"%s\" not found.", normalized);
- goto finish;
- }
-
- bus_remove_match_internal_kernel(bus, id, m->cookie);
- match_free(m);
-
- r = sd_bus_reply_method_return(message, NULL);
-
-finish:
- bus_match_parse_free(components, n_components);
-
- if (c->n_matches <= 0)
- client_free(c);
-
- return r;
-}
-
-static int get_creds_by_name(sd_bus *bus, const char *name, uint64_t mask, sd_bus_creds **_creds, sd_bus_error *error) {
- _cleanup_bus_creds_unref_ sd_bus_creds *c = NULL;
- int r;
-
- assert(bus);
- assert(name);
- assert(_creds);
-
- assert_return(service_name_is_valid(name), -EINVAL);
-
- r = sd_bus_get_owner(bus, name, mask, &c);
- if (r == -ESRCH || r == -ENXIO)
- return sd_bus_error_setf(error, SD_BUS_ERROR_NAME_HAS_NO_OWNER, "Name %s is currently not owned by anyone.", name);
- if (r < 0)
- return r;
-
- if ((c->mask & mask) != mask)
- return -ENOTSUP;
-
- *_creds = c;
- c = NULL;
-
- return 0;
-}
-
-
-static int get_creds_by_message(sd_bus *bus, sd_bus_message *m, uint64_t mask, sd_bus_creds **_creds, sd_bus_error *error) {
- const char *name;
- int r;
-
- assert(bus);
- assert(m);
- assert(_creds);
-
- r = sd_bus_message_read(m, "s", &name);
- if (r < 0)
- return r;
-
- return get_creds_by_name(bus, name, mask, _creds, error);
-}
-
-static int driver_get_security_context(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *error) {
- _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
- _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
- int r;
-
- r = get_creds_by_message(bus, m, SD_BUS_CREDS_SELINUX_CONTEXT, &creds, error);
- if (r < 0)
- return r;
-
- r = sd_bus_message_new_method_return(m, &reply);
- if (r < 0)
- return r;
-
- r = sd_bus_message_append_array(reply, 'y', creds->label, strlen(creds->label));
- if (r < 0)
- return r;
-
- return sd_bus_send(bus, reply, NULL);
-}
-
-static int driver_get_pid(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *error) {
- _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
- int r;
-
- r = get_creds_by_message(bus, m, SD_BUS_CREDS_PID, &creds, error);
- if (r < 0)
- return r;
-
- return sd_bus_reply_method_return(m, "u", (uint32_t) creds->pid);
-}
-
-static int driver_get_user(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *error) {
- _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
- int r;
-
- r = get_creds_by_message(bus, m, SD_BUS_CREDS_UID, &creds, error);
- if (r < 0)
- return r;
-
- return sd_bus_reply_method_return(m, "u", (uint32_t) creds->uid);
-}
-
-static int driver_get_name_owner(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *error) {
- _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
- const char *name;
- int r;
-
- r = sd_bus_message_read(m, "s", &name);
- if (r < 0)
- return r;
-
- /* Here's a special exception for compatibility with dbus1:
- * the bus name of the driver is owned by itself, not by a
- * unique ID. */
- if (streq(name, "org.freedesktop.DBus"))
- return sd_bus_reply_method_return(m, "s", "org.freedesktop.DBus");
-
- r = get_creds_by_name(bus, name, SD_BUS_CREDS_UNIQUE_NAME, &creds, error);
- if (r < 0)
- return r;
-
- return sd_bus_reply_method_return(m, "s", creds->unique_name);
-}
-
-static int driver_get_id(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *error) {
- sd_id128_t server_id;
- char buf[SD_ID128_STRING_MAX];
- int r;
-
- r = sd_bus_get_server_id(bus, &server_id);
- if (r < 0)
- return r;
-
- return sd_bus_reply_method_return(m, "s", sd_id128_to_string(server_id, buf));
-}
-
-static int driver_hello(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *error) {
- return sd_bus_reply_method_return(m, "s", m->sender);
-}
-
-static int return_strv(sd_bus *bus, sd_bus_message *m, char **l) {
- _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
- int r;
-
- r = sd_bus_message_new_method_return(m, &reply);
- if (r < 0)
- return r;
-
- r = sd_bus_message_append_strv(reply, l);
- if (r < 0)
- return r;
-
- return sd_bus_send(bus, reply, NULL);
-}
-
-static int driver_list_names(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *error) {
- _cleanup_strv_free_ char **names = NULL;
- int r;
-
- r = sd_bus_list_names(bus, &names, NULL);
- if (r < 0)
- return r;
-
- /* Let's sort the names list to make it stable */
- strv_sort(names);
-
- return return_strv(bus, m, names);
-}
-
-static int driver_list_activatable_names(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *error) {
- _cleanup_strv_free_ char **names = NULL;
- int r;
-
- r = sd_bus_list_names(bus, NULL, &names);
- if (r < 0)
- return r;
-
- /* Let's sort the names list to make it stable */
- strv_sort(names);
-
- return return_strv(bus, m, names);
-}
-
-static int driver_list_queued_owners(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *error) {
- struct kdbus_cmd_name_list cmd = {};
- struct kdbus_name_list *name_list;
- struct kdbus_cmd_name *name;
- _cleanup_strv_free_ char **owners = NULL;
- char *arg0;
- int r;
-
- r = sd_bus_message_read(m, "s", &arg0);
- if (r < 0)
- return r;
-
- assert_return(service_name_is_valid(arg0), -EINVAL);
-
- cmd.flags = KDBUS_NAME_LIST_QUEUED;
-
- r = ioctl(bus->input_fd, KDBUS_CMD_NAME_LIST, &cmd);
- if (r < 0)
- return -errno;
-
- name_list = (struct kdbus_name_list *) ((uint8_t *) bus->kdbus_buffer + cmd.offset);
-
- KDBUS_ITEM_FOREACH(name, name_list, names) {
- char *n;
-
- if (name->size <= sizeof(*name))
- continue;
-
- if (!streq(name->name, arg0))
- continue;
-
- if (asprintf(&n, ":1.%llu", (unsigned long long) name->owner_id) < 0)
- return -ENOMEM;
-
- r = strv_consume(&owners, n);
- if (r < 0)
- return r;
- }
-
- r = ioctl(bus->input_fd, KDBUS_CMD_FREE, &cmd.offset);
- if (r < 0)
- return -errno;
-
- return return_strv(bus, m, owners);
-}
-
-static int driver_name_has_owner(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *error) {
- const char *name;
- int r;
-
- r = sd_bus_message_read(m, "s", &name);
- if (r < 0)
- return r;
-
- assert_return(service_name_is_valid(name), -EINVAL);
-
- r = sd_bus_get_owner(bus, name, 0, NULL);
- if (r < 0 && r != -ESRCH && r != -ENXIO)
- return r;
-
- return sd_bus_reply_method_return(m, "b", r >= 0);
-}
-
-static int driver_request_name(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *error) {
- struct kdbus_cmd_name *n;
- uint32_t flags;
- size_t size, l;
- uint64_t id;
- const char *name;
- int r;
-
- r = sd_bus_message_read(m, "su", &name, &flags);
- if (r < 0)
- return r;
-
- assert_return(service_name_is_valid(name), -EINVAL);
- assert_return((flags & ~(BUS_NAME_ALLOW_REPLACEMENT|BUS_NAME_REPLACE_EXISTING|BUS_NAME_DO_NOT_QUEUE)) == 0, -EINVAL);
-
- l = strlen(name);
- size = offsetof(struct kdbus_cmd_name, name) + l + 1;
- n = alloca0(size);
- n->size = size;
- memcpy(n->name, name, l+1);
- kdbus_translate_request_name_flags(flags, (uint64_t *) &n->flags);
-
- /* This function is open-coded because we request the name 'on behalf'
- * of the requesting connection */
- r = bus_kernel_parse_unique_name(m->sender, &id);
- if (r < 0)
- return r;
-
- n->owner_id = id;
-
- r = ioctl(bus->input_fd, KDBUS_CMD_NAME_ACQUIRE, n);
- if (r < 0) {
- if (errno == EEXIST)
- return sd_bus_reply_method_return(m, "u", BUS_NAME_EXISTS);
- if (errno == EALREADY)
- return sd_bus_reply_method_return(m, "u", BUS_NAME_ALREADY_OWNER);
-
- return -errno;
- }
-
- if (n->flags & KDBUS_NAME_IN_QUEUE)
- return sd_bus_reply_method_return(m, "u", BUS_NAME_IN_QUEUE);
-
- return sd_bus_reply_method_return(m, "u", BUS_NAME_PRIMARY_OWNER);
-}
-
-static int driver_release_name(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *error) {
- struct kdbus_cmd_name *n;
- const char *name;
- size_t l, size;
- uint64_t id;
- int r;
-
- r = sd_bus_message_read(m, "s", &name);
- if (r < 0)
- return r;
-
- assert_return(service_name_is_valid(name), -EINVAL);
-
- l = strlen(name);
- size = offsetof(struct kdbus_cmd_name, name) + l + 1;
- n = alloca0(size);
- n->size = size;
- memcpy(n->name, name, l+1);
-
- /* This function is open-coded because we request the name 'on behalf'
- * of the requesting connection */
- r = bus_kernel_parse_unique_name(m->sender, &id);
- if (r < 0)
- return r;
-
- n->owner_id = id;
-
- r = ioctl(bus->input_fd, KDBUS_CMD_NAME_RELEASE, n);
- if (r < 0) {
- if (errno == ESRCH)
- return sd_bus_reply_method_return(m, "u", BUS_NAME_NON_EXISTENT);
- if (errno == EADDRINUSE)
- return sd_bus_reply_method_return(m, "u", BUS_NAME_NOT_OWNER);
- return -errno;
- }
-
- return sd_bus_reply_method_return(m, "u", BUS_NAME_RELEASED);
-}
-
-static int driver_start_service_by_name(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *error) {
- _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
- _cleanup_strv_free_ char **t = NULL;
- _cleanup_free_ char *path = NULL;
- uint32_t flags;
- char *name, *u;
- int r;
-
- r = sd_bus_message_read(m, "su", &name, &flags);
- if (r < 0)
- return r;
-
- assert_return(service_name_is_valid(name), -EINVAL);
- assert_return(flags == 0, -ENOTSUP);
-
- r = sd_bus_get_owner(bus, name, 0, NULL);
- if (r >= 0)
- return sd_bus_reply_method_return(m, "u", BUS_START_REPLY_ALREADY_RUNNING);
- if (r != -ESRCH)
- return r;
-
- u = strappenda(name, ".busname");
-
- path = unit_dbus_path_from_name(u);
- if (!path)
- return -ENOMEM;
-
- r = sd_bus_get_property_strv(
- bus,
- "org.freedesktop.systemd1",
- path,
- "org.freedesktop.systemd1.Unit",
- "Triggers",
- error,
- &t);
- if (r < 0)
- return r;
-
- if (!t || !t[0] || t[1])
- return sd_bus_error_setf(error, SD_BUS_ERROR_SERVICE_UNKNOWN, "Bus name %s not found.", name);
-
- r = sd_bus_call_method(
- bus,
- "org.freedesktop.systemd1",
- "/org/freedesktop/systemd1",
- "org.freedesktop.systemd1.Manager",
- "StartUnit",
- error,
- &reply,
- "ss",
- t[0],
- "replace");
- if (r < 0)
- return r;
-
- return sd_bus_reply_method_return(m, "u", BUS_START_REPLY_SUCCESS);
-}
-
-static int driver_update_environment(sd_bus*bus, sd_bus_message *m, void *userdata, sd_bus_error *error) {
- _cleanup_bus_message_unref_ sd_bus_message *msg = NULL;
- _cleanup_strv_free_ char **args = NULL;
- int r;
-
- r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "{ss}");
- if (r < 0)
- return r;
-
- while ((r = sd_bus_message_enter_container(m, SD_BUS_TYPE_DICT_ENTRY, "ss")) > 0) {
- _cleanup_free_ char *s = NULL;
- const char *key;
- const char *value;
-
- r = sd_bus_message_read(m, "ss", &key, &value);
- if (r < 0)
- return r;
-
- s = strjoin(key, "=", value, NULL);
- if (!s)
- return ENOMEM;
-
- r = strv_extend(&args, s);
- if (r < 0)
- return r;
-
- r = sd_bus_message_exit_container(m);
- if (r < 0)
- return r;
- }
-
- r = sd_bus_message_exit_container(m);
- if (r < 0)
- return r;
-
- if (!args)
- return -EINVAL;
-
- r = sd_bus_message_new_method_call(
- bus,
- &msg,
- "org.freedesktop.systemd1",
- "/org/freedesktop/systemd1",
- "org.freedesktop.systemd1.Manager",
- "SetEnvironment");
- if (r < 0)
- return r;
-
- r = sd_bus_message_append_strv(msg, args);
- if (r < 0)
- return r;
-
- r = sd_bus_call(bus, msg, 0, NULL, NULL);
- if (r < 0)
- return r;
-
- return sd_bus_reply_method_return(m, NULL);
-}
-
-static int driver_unsupported(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *error) {
- return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "%s() is not supported", sd_bus_message_get_member(m));
-}
-
-static const sd_bus_vtable driver_vtable[] = {
- SD_BUS_VTABLE_START(0),
- SD_BUS_METHOD("AddMatch", "s", NULL, driver_add_match, SD_BUS_VTABLE_UNPRIVILEGED),
- SD_BUS_METHOD("RemoveMatch", "s", NULL, driver_remove_match, SD_BUS_VTABLE_UNPRIVILEGED),
- SD_BUS_METHOD("GetConnectionSELinuxSecurityContext", "s", "ay", driver_get_security_context, SD_BUS_VTABLE_UNPRIVILEGED),
- SD_BUS_METHOD("GetConnectionUnixProcessID", "s", "u", driver_get_pid, SD_BUS_VTABLE_UNPRIVILEGED),
- SD_BUS_METHOD("GetConnectionUnixUser", "s", "u", driver_get_user, SD_BUS_VTABLE_UNPRIVILEGED),
- SD_BUS_METHOD("GetId", NULL, "s", driver_get_id, SD_BUS_VTABLE_UNPRIVILEGED),
- SD_BUS_METHOD("GetNameOwner", "s", "s", driver_get_name_owner, SD_BUS_VTABLE_UNPRIVILEGED),
- SD_BUS_METHOD("Hello", NULL, "s", driver_hello, SD_BUS_VTABLE_UNPRIVILEGED),
- SD_BUS_METHOD("ListActivatableNames", NULL, "as", driver_list_activatable_names, SD_BUS_VTABLE_UNPRIVILEGED),
- SD_BUS_METHOD("ListNames", NULL, "as", driver_list_names, SD_BUS_VTABLE_UNPRIVILEGED),
- SD_BUS_METHOD("ListQueuedOwners", "s", "as", driver_list_queued_owners, SD_BUS_VTABLE_UNPRIVILEGED),
- SD_BUS_METHOD("NameHasOwner", "s", "b", driver_name_has_owner, SD_BUS_VTABLE_UNPRIVILEGED),
- SD_BUS_METHOD("ReleaseName", "s", "u", driver_release_name, SD_BUS_VTABLE_UNPRIVILEGED),
- SD_BUS_METHOD("ReloadConfig", NULL, NULL, driver_unsupported, SD_BUS_VTABLE_DEPRECATED),
- SD_BUS_METHOD("RequestName", "su", "u", driver_request_name, SD_BUS_VTABLE_UNPRIVILEGED),
- SD_BUS_METHOD("StartServiceByName", "su", "u", driver_start_service_by_name, SD_BUS_VTABLE_UNPRIVILEGED),
- SD_BUS_METHOD("UpdateActivationEnvironment", "a{ss}", NULL, driver_update_environment, 0),
- SD_BUS_SIGNAL("NameAcquired", "s", SD_BUS_VTABLE_DEPRECATED),
- SD_BUS_SIGNAL("NameLost", "s", SD_BUS_VTABLE_DEPRECATED),
- SD_BUS_SIGNAL("NameOwnerChanged", "sss", 0),
- SD_BUS_VTABLE_END
-};
-
-static int find_object(
- sd_bus *bus,
- const char *path,
- const char *interface,
- void *userdata,
- void **ret_found,
- sd_bus_error *ret_error) {
-
- /* We support the driver interface on exactly two different
- * paths: the root and the entry point object. This is a bit
- * different from the original dbus-daemon which supported it
- * on any path. */
-
- if (streq_ptr(path, "/"))
- return 1;
-
- if (streq_ptr(path, "/org/freedesktop/DBus"))
- return 1;
-
- return 0;
-}
-
-static int node_enumerator(
- sd_bus *bus,
- const char *path,
- void *userdata,
- char ***ret_nodes,
- sd_bus_error *ret_error) {
-
- char **l;
-
- l = strv_new("/", "/org/freedesktop/DBus", NULL);
- if (!l)
- return -ENOMEM;
-
- *ret_nodes = l;
- return 0;
-}
-
-static int connect_bus(Context *c) {
- int r;
-
- assert(c);
-
- r = sd_bus_default(&c->bus);
- if (r < 0) {
- log_error("Failed to create bus: %s", strerror(-r));
- return r;
- }
-
- if (!c->bus->is_kernel) {
- log_error("Not running on kdbus");
- return -EPERM;
- }
-
- r = sd_bus_add_fallback_vtable(c->bus, "/", "org.freedesktop.DBus", driver_vtable, find_object, c);
- if (r < 0) {
- log_error("Failed to add manager object vtable: %s", strerror(-r));
- return r;
- }
-
- r = sd_bus_add_node_enumerator(c->bus, "/", node_enumerator, c);
- if (r < 0) {
- log_error("Failed to add node enumerator: %s", strerror(-r));
- return r;
- }
-
- r = sd_bus_request_name(c->bus, "org.freedesktop.DBus", 0);
- if (r < 0) {
- log_error("Unable to request name: %s", strerror(-r));
- return r;
- }
-
- r = sd_bus_attach_event(c->bus, c->event, 0);
- if (r < 0) {
- log_error("Error while adding bus to event loop: %s", strerror(-r));
- return r;
- }
-
- return 0;
-}
-
-static bool check_idle(void *userdata) {
- Context *c = userdata;
- assert(c);
-
- return hashmap_isempty(c->clients);
-}
-
-int main(int argc, char *argv[]) {
- Context context = {};
- Client *c;
- int r;
-
- log_set_target(LOG_TARGET_AUTO);
- log_parse_environment();
- log_open();
-
- if (argc != 1) {
- log_error("This program takes no arguments.");
- r = -EINVAL;
- goto finish;
- }
-
- r = sd_event_default(&context.event);
- if (r < 0) {
- log_error("Failed to allocate event loop: %s", strerror(-r));
- goto finish;
- }
-
- sd_event_set_watchdog(context.event, true);
-
- r = connect_bus(&context);
- if (r < 0)
- goto finish;
-
- r = bus_event_loop_with_idle(context.event, context.bus, "org.freedesktop.DBus", DEFAULT_EXIT_USEC, check_idle, &context);
- if (r < 0) {
- log_error("Failed to run event loop: %s", strerror(-r));
- goto finish;
- }
-
-finish:
- while ((c = hashmap_first(context.clients)))
- client_free(c);
-
- sd_bus_unref(context.bus);
- sd_event_unref(context.event);
-
- return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
-}
~ianmdlvl / elogind.git / blobdiff