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-rw-r--r--src/core/dbus.c1896
1 files changed, 696 insertions, 1200 deletions
diff --git a/src/core/dbus.c b/src/core/dbus.c
index b0ae3e1ae7..35d185a601 100644
--- a/src/core/dbus.c
+++ b/src/core/dbus.c
@@ -23,9 +23,8 @@
#include <sys/timerfd.h>
#include <errno.h>
#include <unistd.h>
-#include <dbus/dbus.h>
-#include "dbus.h"
+#include "sd-bus.h"
#include "log.h"
#include "strv.h"
#include "mkdir.h"
@@ -33,1034 +32,851 @@
#include "dbus-unit.h"
#include "dbus-job.h"
#include "dbus-manager.h"
-#include "dbus-service.h"
-#include "dbus-socket.h"
-#include "dbus-target.h"
-#include "dbus-device.h"
-#include "dbus-mount.h"
-#include "dbus-automount.h"
-#include "dbus-snapshot.h"
-#include "dbus-swap.h"
-#include "dbus-timer.h"
-#include "dbus-path.h"
-#include "bus-errors.h"
+#include "dbus-execute.h"
+#include "dbus-kill.h"
+#include "dbus-cgroup.h"
#include "special.h"
-#include "dbus-common.h"
+#include "dbus.h"
+#include "bus-util.h"
+#include "bus-error.h"
+#include "bus-errors.h"
+#include "strxcpyx.h"
+#include "dbus-client-track.h"
#define CONNECTIONS_MAX 512
-/* Well-known address (http://dbus.freedesktop.org/doc/dbus-specification.html#message-bus-types) */
-#define DBUS_SYSTEM_BUS_DEFAULT_ADDRESS "unix:path=/var/run/dbus/system_bus_socket"
-/* Only used as a fallback */
-#define DBUS_SESSION_BUS_DEFAULT_ADDRESS "autolaunch:"
-
-static const char bus_properties_interface[] = BUS_PROPERTIES_INTERFACE;
-static const char bus_introspectable_interface[] = BUS_INTROSPECTABLE_INTERFACE;
-
-const char *const bus_interface_table[] = {
- "org.freedesktop.DBus.Properties", bus_properties_interface,
- "org.freedesktop.DBus.Introspectable", bus_introspectable_interface,
- "org.freedesktop.systemd1.Manager", bus_manager_interface,
- "org.freedesktop.systemd1.Job", bus_job_interface,
- "org.freedesktop.systemd1.Unit", bus_unit_interface,
- "org.freedesktop.systemd1.Service", bus_service_interface,
- "org.freedesktop.systemd1.Socket", bus_socket_interface,
- "org.freedesktop.systemd1.Target", bus_target_interface,
- "org.freedesktop.systemd1.Device", bus_device_interface,
- "org.freedesktop.systemd1.Mount", bus_mount_interface,
- "org.freedesktop.systemd1.Automount", bus_automount_interface,
- "org.freedesktop.systemd1.Snapshot", bus_snapshot_interface,
- "org.freedesktop.systemd1.Swap", bus_swap_interface,
- "org.freedesktop.systemd1.Timer", bus_timer_interface,
- "org.freedesktop.systemd1.Path", bus_path_interface,
- NULL
-};
-
-static void bus_done_api(Manager *m);
-static void bus_done_system(Manager *m);
-static void bus_done_private(Manager *m);
-static void shutdown_connection(Manager *m, DBusConnection *c);
-
-static void bus_dispatch_status(DBusConnection *bus, DBusDispatchStatus status, void *data) {
- Manager *m = data;
+static void destroy_bus(Manager *m, sd_bus **bus);
+
+int bus_send_queued_message(Manager *m) {
+ int r;
- assert(bus);
assert(m);
- /* We maintain two sets, one for those connections where we
- * requested a dispatch, and another where we didn't. And then,
- * we move the connections between the two sets. */
+ if (!m->queued_message)
+ return 0;
- if (status == DBUS_DISPATCH_COMPLETE)
- set_move_one(m->bus_connections, m->bus_connections_for_dispatch, bus);
- else
- set_move_one(m->bus_connections_for_dispatch, m->bus_connections, bus);
-}
+ assert(m->queued_message_bus);
-void bus_watch_event(Manager *m, Watch *w, int events) {
- assert(m);
- assert(w);
+ /* If we cannot get rid of this message we won't dispatch any
+ * D-Bus messages, so that we won't end up wanting to queue
+ * another message. */
- /* This is called by the event loop whenever there is
- * something happening on D-Bus' file handles. */
+ r = sd_bus_send(m->queued_message_bus, m->queued_message, NULL);
+ if (r < 0)
+ log_warning("Failed to send queued message: %s", strerror(-r));
- if (!dbus_watch_get_enabled(w->data.bus_watch))
- return;
+ m->queued_message = sd_bus_message_unref(m->queued_message);
+ m->queued_message_bus = sd_bus_unref(m->queued_message_bus);
- dbus_watch_handle(w->data.bus_watch, bus_events_to_flags(events));
+ return 0;
}
-static dbus_bool_t bus_add_watch(DBusWatch *bus_watch, void *data) {
- Manager *m = data;
- Watch *w;
- struct epoll_event ev;
+static int signal_agent_released(sd_bus *bus, sd_bus_message *message, void *userdata) {
+ Manager *m = userdata;
+ const char *cgroup;
+ int r;
- assert(bus_watch);
+ assert(bus);
+ assert(message);
assert(m);
- if (!(w = new0(Watch, 1)))
- return FALSE;
-
- w->fd = dbus_watch_get_unix_fd(bus_watch);
- w->type = WATCH_DBUS_WATCH;
- w->data.bus_watch = bus_watch;
+ r = sd_bus_message_read(message, "s", &cgroup);
+ if (r < 0) {
+ bus_log_parse_error(r);
+ return 0;
+ }
- zero(ev);
- ev.events = bus_flags_to_events(bus_watch);
- ev.data.ptr = w;
+ manager_notify_cgroup_empty(m, cgroup);
- if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, w->fd, &ev) < 0) {
+ if (m->running_as == SYSTEMD_SYSTEM && m->system_bus) {
+ /* If we are running as system manager, forward the
+ * message to the system bus */
- if (errno != EEXIST) {
- free(w);
- return FALSE;
- }
+ r = sd_bus_send(m->system_bus, message, NULL);
+ if (r < 0)
+ log_warning("Failed to forward Released message: %s", strerror(-r));
+ }
- /* Hmm, bloody D-Bus creates multiple watches on the
- * same fd. epoll() does not like that. As a dirty
- * hack we simply dup() the fd and hence get a second
- * one we can safely add to the epoll(). */
+ return 0;
+}
- if ((w->fd = dup(w->fd)) < 0) {
- free(w);
- return FALSE;
- }
+static int signal_disconnected(sd_bus *bus, sd_bus_message *message, void *userdata) {
+ Manager *m = userdata;
- if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, w->fd, &ev) < 0) {
- close_nointr_nofail(w->fd);
- free(w);
- return FALSE;
- }
+ assert(bus);
+ assert(message);
+ assert(m);
- w->fd_is_dupped = true;
+ if (bus == m->api_bus)
+ destroy_bus(m, &m->api_bus);
+ if (bus == m->system_bus)
+ destroy_bus(m, &m->system_bus);
+ if (set_remove(m->private_buses, bus)) {
+ log_debug("Got disconnect on private connection.");
+ destroy_bus(m, &bus);
}
- dbus_watch_set_data(bus_watch, w, NULL);
-
- return TRUE;
+ return 0;
}
-static void bus_remove_watch(DBusWatch *bus_watch, void *data) {
- Manager *m = data;
- Watch *w;
+static int signal_name_owner_changed(sd_bus *bus, sd_bus_message *message, void *userdata) {
+ const char *name, *old_owner, *new_owner;
+ Manager *m = userdata;
+ int r;
- assert(bus_watch);
+ assert(bus);
+ assert(message);
assert(m);
- w = dbus_watch_get_data(bus_watch);
- if (!w)
- return;
-
- assert(w->type == WATCH_DBUS_WATCH);
- assert_se(epoll_ctl(m->epoll_fd, EPOLL_CTL_DEL, w->fd, NULL) >= 0);
+ r = sd_bus_message_read(message, "sss", &name, &old_owner, &new_owner);
+ if (r < 0) {
+ bus_log_parse_error(r);
+ return 0;
+ }
- if (w->fd_is_dupped)
- close_nointr_nofail(w->fd);
+ manager_dispatch_bus_name_owner_changed(
+ m, name,
+ isempty(old_owner) ? NULL : old_owner,
+ isempty(new_owner) ? NULL : new_owner);
- free(w);
+ return 0;
}
-static void bus_toggle_watch(DBusWatch *bus_watch, void *data) {
- Manager *m = data;
- Watch *w;
- struct epoll_event ev;
+static int signal_activation_request(sd_bus *bus, sd_bus_message *message, void *userdata) {
+ _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+ Manager *m = userdata;
+ const char *name;
+ Unit *u;
+ int r;
- assert(bus_watch);
+ assert(bus);
+ assert(message);
assert(m);
- w = dbus_watch_get_data(bus_watch);
- if (!w)
- return;
-
- assert(w->type == WATCH_DBUS_WATCH);
-
- zero(ev);
- ev.events = bus_flags_to_events(bus_watch);
- ev.data.ptr = w;
-
- assert_se(epoll_ctl(m->epoll_fd, EPOLL_CTL_MOD, w->fd, &ev) == 0);
-}
+ r = sd_bus_message_read(message, "s", &name);
+ if (r < 0) {
+ bus_log_parse_error(r);
+ return 0;
+ }
-static int bus_timeout_arm(Manager *m, Watch *w) {
- struct itimerspec its = {};
+ if (manager_unit_inactive_or_pending(m, SPECIAL_DBUS_SERVICE) ||
+ manager_unit_inactive_or_pending(m, SPECIAL_DBUS_SOCKET)) {
+ r = sd_bus_error_setf(&error, BUS_ERROR_SHUTTING_DOWN, "Refusing activation, D-Bus is shutting down.");
+ goto failed;
+ }
- assert(m);
- assert(w);
+ r = manager_load_unit(m, name, NULL, &error, &u);
+ if (r < 0)
+ goto failed;
- if (dbus_timeout_get_enabled(w->data.bus_timeout)) {
- timespec_store(&its.it_value, dbus_timeout_get_interval(w->data.bus_timeout) * USEC_PER_MSEC);
- its.it_interval = its.it_value;
+ if (u->refuse_manual_start) {
+ r = sd_bus_error_setf(&error, BUS_ERROR_ONLY_BY_DEPENDENCY, "Operation refused, %u may be requested by dependency only.", u->id);
+ goto failed;
}
- if (timerfd_settime(w->fd, 0, &its, NULL) < 0)
- return -errno;
+ r = manager_add_job(m, JOB_START, u, JOB_REPLACE, true, &error, NULL);
+ if (r < 0)
+ goto failed;
+ /* Successfully queued, that's it for us */
return 0;
-}
-void bus_timeout_event(Manager *m, Watch *w, int events) {
- assert(m);
- assert(w);
+failed:
+ if (!sd_bus_error_is_set(&error))
+ sd_bus_error_set_errno(&error, r);
- /* This is called by the event loop whenever there is
- * something happening on D-Bus' file handles. */
+ log_debug("D-Bus activation failed for %s: %s", name, bus_error_message(&error, r));
- if (!(dbus_timeout_get_enabled(w->data.bus_timeout)))
- return;
+ r = sd_bus_message_new_signal(bus, "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Activator", "ActivationFailure", &reply);
+ if (r < 0) {
+ bus_log_create_error(r);
+ return 0;
+ }
- dbus_timeout_handle(w->data.bus_timeout);
+ r = sd_bus_message_append(reply, "sss", error.name, error.message);
+ if (r < 0) {
+ bus_log_create_error(r);
+ return 0;
+ }
+
+ r = sd_bus_send_to(bus, reply, "org.freedesktop.DBus", NULL);
+ if (r < 0) {
+ log_error("Failed to respond with to bus activation request: %s", strerror(-r));
+ return r;
+ }
+
+ return 0;
}
-static dbus_bool_t bus_add_timeout(DBusTimeout *timeout, void *data) {
- Manager *m = data;
- Watch *w;
- struct epoll_event ev;
+static int bus_job_find(sd_bus *bus, const char *path, const char *interface, void **found, void *userdata) {
+ Manager *m = userdata;
+ Job *j;
+ int r;
- assert(timeout);
+ assert(bus);
+ assert(path);
+ assert(interface);
+ assert(found);
assert(m);
- if (!(w = new0(Watch, 1)))
- return FALSE;
-
- if ((w->fd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK|TFD_CLOEXEC)) < 0)
- goto fail;
+ r = manager_get_job_from_dbus_path(m, path, &j);
+ if (r < 0)
+ return 0;
- w->type = WATCH_DBUS_TIMEOUT;
- w->data.bus_timeout = timeout;
+ *found = j;
+ return 1;
+}
- if (bus_timeout_arm(m, w) < 0)
- goto fail;
+static Unit *find_unit(Manager *m, sd_bus *bus, const char *path) {
+ Unit *u;
+ int r;
- zero(ev);
- ev.events = EPOLLIN;
- ev.data.ptr = w;
+ assert(m);
+ assert(bus);
+ assert(path);
- if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, w->fd, &ev) < 0)
- goto fail;
+ if (streq_ptr(path, "/org/freedesktop/systemd1/unit/self")) {
+ sd_bus_message *message;
+ pid_t pid;
- dbus_timeout_set_data(timeout, w, NULL);
+ message = sd_bus_get_current(bus);
+ if (!message)
+ return NULL;
- return TRUE;
+ r = sd_bus_get_owner_pid(bus, sd_bus_message_get_sender(message), &pid);
+ if (r < 0)
+ return NULL;
-fail:
- if (w->fd >= 0)
- close_nointr_nofail(w->fd);
+ u = manager_get_unit_by_pid(m, pid);
+ } else {
+ r = manager_load_unit_from_dbus_path(m, path, NULL, &u);
+ if (r < 0)
+ return NULL;
+ }
- free(w);
- return FALSE;
+ return u;
}
-static void bus_remove_timeout(DBusTimeout *timeout, void *data) {
- Manager *m = data;
- Watch *w;
+static int bus_unit_find(sd_bus *bus, const char *path, const char *interface, void **found, void *userdata) {
+ Manager *m = userdata;
+ Unit *u;
- assert(timeout);
+ assert(bus);
+ assert(path);
+ assert(interface);
+ assert(found);
assert(m);
- w = dbus_timeout_get_data(timeout);
- if (!w)
- return;
-
- assert(w->type == WATCH_DBUS_TIMEOUT);
+ u = find_unit(m, bus, path);
+ if (!u)
+ return 0;
- assert_se(epoll_ctl(m->epoll_fd, EPOLL_CTL_DEL, w->fd, NULL) >= 0);
- close_nointr_nofail(w->fd);
- free(w);
+ *found = u;
+ return 1;
}
-static void bus_toggle_timeout(DBusTimeout *timeout, void *data) {
- Manager *m = data;
- Watch *w;
- int r;
+static int bus_unit_interface_find(sd_bus *bus, const char *path, const char *interface, void **found, void *userdata) {
+ Manager *m = userdata;
+ Unit *u;
- assert(timeout);
+ assert(bus);
+ assert(path);
+ assert(interface);
+ assert(found);
assert(m);
- w = dbus_timeout_get_data(timeout);
- if (!w)
- return;
+ u = find_unit(m, bus, path);
+ if (!u)
+ return 0;
- assert(w->type == WATCH_DBUS_TIMEOUT);
+ if (!streq_ptr(interface, UNIT_VTABLE(u)->bus_interface))
+ return 0;
- if ((r = bus_timeout_arm(m, w)) < 0)
- log_error("Failed to rearm timer: %s", strerror(-r));
+ *found = u;
+ return 1;
}
-static DBusHandlerResult api_bus_message_filter(DBusConnection *connection, DBusMessage *message, void *data) {
- Manager *m = data;
- DBusError error;
- DBusMessage *reply = NULL;
+static int bus_unit_cgroup_find(sd_bus *bus, const char *path, const char *interface, void **found, void *userdata) {
+ Manager *m = userdata;
+ Unit *u;
- assert(connection);
- assert(message);
+ assert(bus);
+ assert(path);
+ assert(interface);
+ assert(found);
assert(m);
- dbus_error_init(&error);
-
- if (dbus_message_get_type(message) == DBUS_MESSAGE_TYPE_METHOD_CALL ||
- dbus_message_get_type(message) == DBUS_MESSAGE_TYPE_SIGNAL)
- log_debug("Got D-Bus request: %s.%s() on %s",
- dbus_message_get_interface(message),
- dbus_message_get_member(message),
- dbus_message_get_path(message));
-
- if (dbus_message_is_signal(message, DBUS_INTERFACE_LOCAL, "Disconnected")) {
- log_debug("API D-Bus connection terminated.");
- bus_done_api(m);
-
- } else if (dbus_message_is_signal(message, DBUS_INTERFACE_DBUS, "NameOwnerChanged")) {
- const char *name, *old_owner, *new_owner;
-
- if (!dbus_message_get_args(message, &error,
- DBUS_TYPE_STRING, &name,
- DBUS_TYPE_STRING, &old_owner,
- DBUS_TYPE_STRING, &new_owner,
- DBUS_TYPE_INVALID))
- log_error("Failed to parse NameOwnerChanged message: %s", bus_error_message(&error));
- else {
- if (set_remove(BUS_CONNECTION_SUBSCRIBED(m, connection), (char*) name))
- log_debug("Subscription client vanished: %s (left: %u)", name, set_size(BUS_CONNECTION_SUBSCRIBED(m, connection)));
-
- if (old_owner[0] == 0)
- old_owner = NULL;
+ u = find_unit(m, bus, path);
+ if (!u)
+ return 0;
- if (new_owner[0] == 0)
- new_owner = NULL;
+ if (!streq_ptr(interface, UNIT_VTABLE(u)->bus_interface))
+ return 0;
- manager_dispatch_bus_name_owner_changed(m, name, old_owner, new_owner);
- }
- } else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Activator", "ActivationRequest")) {
- const char *name;
-
- if (!dbus_message_get_args(message, &error,
- DBUS_TYPE_STRING, &name,
- DBUS_TYPE_INVALID))
- log_error("Failed to parse ActivationRequest message: %s", bus_error_message(&error));
- else {
- int r;
- Unit *u;
-
- log_debug("Got D-Bus activation request for %s", name);
-
- if (manager_unit_inactive_or_pending(m, SPECIAL_DBUS_SERVICE) ||
- manager_unit_inactive_or_pending(m, SPECIAL_DBUS_SOCKET)) {
- r = -EADDRNOTAVAIL;
- dbus_set_error(&error, BUS_ERROR_SHUTTING_DOWN, "Refusing activation, D-Bus is shutting down.");
- } else {
- r = manager_load_unit(m, name, NULL, &error, &u);
-
- if (r >= 0 && u->refuse_manual_start)
- r = -EPERM;
-
- if (r >= 0)
- r = manager_add_job(m, JOB_START, u, JOB_REPLACE, true, &error, NULL);
- }
+ if (!unit_get_cgroup_context(u))
+ return 0;
- if (r < 0) {
- const char *id, *text;
+ *found = u;
+ return 1;
+}
- log_debug("D-Bus activation failed for %s: %s", name, strerror(-r));
+static int bus_cgroup_context_find(sd_bus *bus, const char *path, const char *interface, void **found, void *userdata) {
+ Manager *m = userdata;
+ CGroupContext *c;
+ Unit *u;
- if (!(reply = dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1.Activator", "ActivationFailure")))
- goto oom;
+ assert(bus);
+ assert(path);
+ assert(interface);
+ assert(found);
+ assert(m);
- id = error.name ? error.name : bus_errno_to_dbus(r);
- text = bus_error(&error, r);
+ u = find_unit(m, bus, path);
+ if (!u)
+ return 0;
- if (!dbus_message_set_destination(reply, DBUS_SERVICE_DBUS) ||
- !dbus_message_append_args(reply,
- DBUS_TYPE_STRING, &name,
- DBUS_TYPE_STRING, &id,
- DBUS_TYPE_STRING, &text,
- DBUS_TYPE_INVALID))
- goto oom;
- }
+ if (!streq_ptr(interface, UNIT_VTABLE(u)->bus_interface))
+ return 0;
- /* On success we don't do anything, the service will be spawned now */
- }
- }
+ c = unit_get_cgroup_context(u);
+ if (!c)
+ return 0;
- dbus_error_free(&error);
+ *found = c;
+ return 1;
+}
- if (reply) {
- if (!bus_maybe_send_reply(connection, message, reply))
- goto oom;
+static int bus_exec_context_find(sd_bus *bus, const char *path, const char *interface, void **found, void *userdata) {
+ Manager *m = userdata;
+ ExecContext *c;
+ Unit *u;
- dbus_message_unref(reply);
- }
+ assert(bus);
+ assert(path);
+ assert(interface);
+ assert(found);
+ assert(m);
- return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
+ u = find_unit(m, bus, path);
+ if (!u)
+ return 0;
-oom:
- if (reply)
- dbus_message_unref(reply);
+ if (!streq_ptr(interface, UNIT_VTABLE(u)->bus_interface))
+ return 0;
- dbus_error_free(&error);
+ c = unit_get_exec_context(u);
+ if (!c)
+ return 0;
- return DBUS_HANDLER_RESULT_NEED_MEMORY;
+ *found = c;
+ return 1;
}
-static DBusHandlerResult system_bus_message_filter(DBusConnection *connection, DBusMessage *message, void *data) {
- Manager *m = data;
- DBusError error;
+static int bus_kill_context_find(sd_bus *bus, const char *path, const char *interface, void **found, void *userdata) {
+ Manager *m = userdata;
+ KillContext *c;
+ Unit *u;
- assert(connection);
- assert(message);
+ assert(bus);
+ assert(path);
+ assert(interface);
+ assert(found);
assert(m);
- dbus_error_init(&error);
-
- if (m->api_bus != m->system_bus &&
- (dbus_message_get_type(message) == DBUS_MESSAGE_TYPE_METHOD_CALL ||
- dbus_message_get_type(message) == DBUS_MESSAGE_TYPE_SIGNAL))
- log_debug("Got D-Bus request on system bus: %s.%s() on %s",
- dbus_message_get_interface(message),
- dbus_message_get_member(message),
- dbus_message_get_path(message));
+ u = find_unit(m, bus, path);
+ if (!u)
+ return 0;
- if (dbus_message_is_signal(message, DBUS_INTERFACE_LOCAL, "Disconnected")) {
- log_debug("System D-Bus connection terminated.");
- bus_done_system(m);
+ if (!streq_ptr(interface, UNIT_VTABLE(u)->bus_interface))
+ return 0;
- } else if (m->running_as != SYSTEMD_SYSTEM &&
- dbus_message_is_signal(message, "org.freedesktop.systemd1.Agent", "Released")) {
+ c = unit_get_kill_context(u);
+ if (!c)
+ return 0;
- const char *cgroup;
+ *found = c;
+ return 1;
+}
- if (!dbus_message_get_args(message, &error,
- DBUS_TYPE_STRING, &cgroup,
- DBUS_TYPE_INVALID))
- log_error("Failed to parse Released message: %s", bus_error_message(&error));
- else
- manager_notify_cgroup_empty(m, cgroup);
- }
+static int bus_job_enumerate(sd_bus *bus, const char *path, char ***nodes, void *userdata) {
+ _cleanup_free_ char **l = NULL;
+ Manager *m = userdata;
+ unsigned k = 0;
+ Iterator i;
+ Job *j;
- dbus_error_free(&error);
- return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
-}
+ l = new0(char*, hashmap_size(m->jobs)+1);
+ if (!l)
+ return -ENOMEM;
-static DBusHandlerResult private_bus_message_filter(DBusConnection *connection, DBusMessage *message, void *data) {
- Manager *m = data;
- DBusError error;
+ HASHMAP_FOREACH(j, m->jobs, i) {
+ l[k] = job_dbus_path(j);
+ if (!l[k])
+ return -ENOMEM;
- assert(connection);
- assert(message);
- assert(m);
+ k++;
+ }
- dbus_error_init(&error);
+ assert(hashmap_size(m->jobs) == k);
- if (dbus_message_get_type(message) == DBUS_MESSAGE_TYPE_METHOD_CALL ||
- dbus_message_get_type(message) == DBUS_MESSAGE_TYPE_SIGNAL)
- log_debug("Got D-Bus request: %s.%s() on %s",
- dbus_message_get_interface(message),
- dbus_message_get_member(message),
- dbus_message_get_path(message));
+ *nodes = l;
+ l = NULL;
- if (dbus_message_is_signal(message, DBUS_INTERFACE_LOCAL, "Disconnected"))
- shutdown_connection(m, connection);
- else if (m->running_as == SYSTEMD_SYSTEM &&
- dbus_message_is_signal(message, "org.freedesktop.systemd1.Agent", "Released")) {
+ return k;
+}
- const char *cgroup;
+static int bus_unit_enumerate(sd_bus *bus, const char *path, char ***nodes, void *userdata) {
+ _cleanup_free_ char **l = NULL;
+ Manager *m = userdata;
+ unsigned k = 0;
+ Iterator i;
+ Unit *u;
- if (!dbus_message_get_args(message, &error,
- DBUS_TYPE_STRING, &cgroup,
- DBUS_TYPE_INVALID))
- log_error("Failed to parse Released message: %s", bus_error_message(&error));
- else
- manager_notify_cgroup_empty(m, cgroup);
+ l = new0(char*, hashmap_size(m->units)+1);
+ if (!l)
+ return -ENOMEM;
- /* Forward the message to the system bus, so that user
- * instances are notified as well */
+ HASHMAP_FOREACH(u, m->units, i) {
+ l[k] = unit_dbus_path(u);
+ if (!l[k])
+ return -ENOMEM;
- if (m->system_bus)
- dbus_connection_send(m->system_bus, message, NULL);
+ k++;
}
- dbus_error_free(&error);
+ *nodes = l;
+ l = NULL;
- return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
+ return k;
}
-unsigned bus_dispatch(Manager *m) {
- DBusConnection *c;
+static int bus_setup_api_vtables(Manager *m, sd_bus *bus) {
+ UnitType t;
+ int r;
assert(m);
+ assert(bus);
- if (m->queued_message) {
- /* If we cannot get rid of this message we won't
- * dispatch any D-Bus messages, so that we won't end
- * up wanting to queue another message. */
-
- if (m->queued_message_connection)
- if (!dbus_connection_send(m->queued_message_connection, m->queued_message, NULL))
- return 0;
-
- dbus_message_unref(m->queued_message);
- m->queued_message = NULL;
- m->queued_message_connection = NULL;
+ r = sd_bus_add_object_vtable(bus, "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", bus_manager_vtable, m);
+ if (r < 0) {
+ log_error("Failed to register Manager vtable: %s", strerror(-r));
+ return r;
}
- if ((c = set_first(m->bus_connections_for_dispatch))) {
- if (dbus_connection_dispatch(c) == DBUS_DISPATCH_COMPLETE)
- set_move_one(m->bus_connections, m->bus_connections_for_dispatch, c);
-
- return 1;
+ r = sd_bus_add_fallback_vtable(bus, "/org/freedesktop/systemd1/job", "org.freedesktop.systemd1.Job", bus_job_vtable, bus_job_find, m);
+ if (r < 0) {
+ log_error("Failed to register Job vtable: %s", strerror(-r));
+ return r;
}
- return 0;
-}
-
-static void request_name_pending_cb(DBusPendingCall *pending, void *userdata) {
- DBusMessage *reply;
- DBusError error;
-
- dbus_error_init(&error);
-
- assert_se(reply = dbus_pending_call_steal_reply(pending));
+ r = sd_bus_add_node_enumerator(bus, "/org/freedesktop/systemd1/job", bus_job_enumerate, m);
+ if (r < 0) {
+ log_error("Failed to add job enumerator: %s", strerror(-r));
+ return r;
+ }
- switch (dbus_message_get_type(reply)) {
+ r = sd_bus_add_fallback_vtable(bus, "/org/freedesktop/systemd1/unit", "org.freedesktop.systemd1.Unit", bus_unit_vtable, bus_unit_find, m);
+ if (r < 0) {
+ log_error("Failed to register Unit vtable: %s", strerror(-r));
+ return r;
+ }
- case DBUS_MESSAGE_TYPE_ERROR:
+ r = sd_bus_add_node_enumerator(bus, "/org/freedesktop/systemd1/unit", bus_unit_enumerate, m);
+ if (r < 0) {
+ log_error("Failed to add job enumerator: %s", strerror(-r));
+ return r;
+ }
- assert_se(dbus_set_error_from_message(&error, reply));
- log_warning("RequestName() failed: %s", bus_error_message(&error));
- break;
+ for (t = 0; t < _UNIT_TYPE_MAX; t++) {
+ r = sd_bus_add_fallback_vtable(bus, "/org/freedesktop/systemd1/unit", unit_vtable[t]->bus_interface, unit_vtable[t]->bus_vtable, bus_unit_interface_find, m);
+ if (r < 0) {
+ log_error("Failed to register type specific vtable for %s: %s", unit_vtable[t]->bus_interface, strerror(-r));
+ return r;
+ }
- case DBUS_MESSAGE_TYPE_METHOD_RETURN: {
- uint32_t r;
+ if (unit_vtable[t]->cgroup_context_offset > 0) {
+ r = sd_bus_add_fallback_vtable(bus, "/org/freedesktop/systemd1/unit", unit_vtable[t]->bus_interface, bus_unit_cgroup_vtable, bus_unit_cgroup_find, m);
+ if (r < 0) {
+ log_error("Failed to register control group unit vtable for %s: %s", unit_vtable[t]->bus_interface, strerror(-r));
+ return r;
+ }
- if (!dbus_message_get_args(reply,
- &error,
- DBUS_TYPE_UINT32, &r,
- DBUS_TYPE_INVALID)) {
- log_error("Failed to parse RequestName() reply: %s", bus_error_message(&error));
- break;
+ r = sd_bus_add_fallback_vtable(bus, "/org/freedesktop/systemd1/unit", unit_vtable[t]->bus_interface, bus_cgroup_vtable, bus_cgroup_context_find, m);
+ if (r < 0) {
+ log_error("Failed to register control group vtable for %s: %s", unit_vtable[t]->bus_interface, strerror(-r));
+ return r;
+ }
}
- if (r == 1)
- log_debug("Successfully acquired name.");
- else
- log_error("Name already owned.");
-
- break;
- }
+ if (unit_vtable[t]->exec_context_offset > 0) {
+ r = sd_bus_add_fallback_vtable(bus, "/org/freedesktop/systemd1/unit", unit_vtable[t]->bus_interface, bus_exec_vtable, bus_exec_context_find, m);
+ if (r < 0) {
+ log_error("Failed to register execute vtable for %s: %s", unit_vtable[t]->bus_interface, strerror(-r));
+ return r;
+ }
+ }
- default:
- assert_not_reached("Invalid reply message");
+ if (unit_vtable[t]->kill_context_offset > 0) {
+ r = sd_bus_add_fallback_vtable(bus, "/org/freedesktop/systemd1/unit", unit_vtable[t]->bus_interface, bus_kill_vtable, bus_kill_context_find, m);
+ if (r < 0) {
+ log_error("Failed to register kill vtable for %s: %s", unit_vtable[t]->bus_interface, strerror(-r));
+ return r;
+ }
+ }
}
- dbus_message_unref(reply);
- dbus_error_free(&error);
+ return 0;
}
-static int request_name(Manager *m) {
- const char *name = "org.freedesktop.systemd1";
- /* Allow replacing of our name, to ease implementation of
- * reexecution, where we keep the old connection open until
- * after the new connection is set up and the name installed
- * to allow clients to synchronously wait for reexecution to
- * finish */
- uint32_t flags = DBUS_NAME_FLAG_ALLOW_REPLACEMENT|DBUS_NAME_FLAG_REPLACE_EXISTING;
- DBusMessage *message = NULL;
- DBusPendingCall *pending = NULL;
-
- if (!(message = dbus_message_new_method_call(
- DBUS_SERVICE_DBUS,
- DBUS_PATH_DBUS,
- DBUS_INTERFACE_DBUS,
- "RequestName")))
- goto oom;
-
- if (!dbus_message_append_args(
- message,
- DBUS_TYPE_STRING, &name,
- DBUS_TYPE_UINT32, &flags,
- DBUS_TYPE_INVALID))
- goto oom;
-
- if (!dbus_connection_send_with_reply(m->api_bus, message, &pending, -1))
- goto oom;
-
- if (!dbus_pending_call_set_notify(pending, request_name_pending_cb, m, NULL))
- goto oom;
+static int bus_setup_disconnected_match(Manager *m, sd_bus *bus) {
+ int r;
- dbus_message_unref(message);
- dbus_pending_call_unref(pending);
+ assert(m);
+ assert(bus);
- /* We simple ask for the name and don't wait for it. Sooner or
- * later we'll have it. */
+ r = sd_bus_add_match(
+ bus,
+ "type='signal',"
+ "path='/org/freedesktop/DBus/Local',"
+ "interface='org.freedesktop.DBus.Local',"
+ "member='Disconnected'",
+ signal_disconnected, m);
- return 0;
-
-oom:
- if (pending) {
- dbus_pending_call_cancel(pending);
- dbus_pending_call_unref(pending);
+ if (r < 0) {
+ log_error("Failed to register match for Disconnected message: %s", strerror(-r));
+ return r;
}
- if (message)
- dbus_message_unref(message);
-
- return -ENOMEM;
+ return 0;
}
-static void query_name_list_pending_cb(DBusPendingCall *pending, void *userdata) {
- DBusMessage *reply;
- DBusError error;
+static int bus_on_connection(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
+ _cleanup_bus_unref_ sd_bus *bus = NULL;
+ _cleanup_close_ int nfd = -1;
Manager *m = userdata;
+ sd_id128_t id;
+ int r;
+ assert(s);
assert(m);
- dbus_error_init(&error);
-
- assert_se(reply = dbus_pending_call_steal_reply(pending));
-
- switch (dbus_message_get_type(reply)) {
-
- case DBUS_MESSAGE_TYPE_ERROR:
-
- assert_se(dbus_set_error_from_message(&error, reply));
- log_warning("ListNames() failed: %s", bus_error_message(&error));
- break;
-
- case DBUS_MESSAGE_TYPE_METHOD_RETURN: {
- int r;
- char **l;
-
- if ((r = bus_parse_strv(reply, &l)) < 0)
- log_warning("Failed to parse ListNames() reply: %s", strerror(-r));
- else {
- char **t;
-
- STRV_FOREACH(t, l)
- /* This is a bit hacky, we say the
- * owner of the name is the name
- * itself, because we don't want the
- * extra traffic to figure out the
- * real owner. */
- manager_dispatch_bus_name_owner_changed(m, *t, NULL, *t);
-
- strv_free(l);
- }
-
- break;
+ nfd = accept4(fd, NULL, NULL, SOCK_NONBLOCK|SOCK_CLOEXEC);
+ if (nfd < 0) {
+ log_warning("Failed to accept private connection, ignoring: %m");
+ return 0;
}
- default:
- assert_not_reached("Invalid reply message");
+ if (set_size(m->private_buses) >= CONNECTIONS_MAX) {
+ log_warning("Too many concurrent connections, refusing");
+ return 0;
}
- dbus_message_unref(reply);
- dbus_error_free(&error);
-}
-
-static int query_name_list(Manager *m) {
- DBusMessage *message = NULL;
- DBusPendingCall *pending = NULL;
+ r = set_ensure_allocated(&m->private_buses, trivial_hash_func, trivial_compare_func);
+ if (r < 0) {
+ log_oom();
+ return 0;
+ }
- /* Asks for the currently installed bus names */
+ r = sd_bus_new(&bus);
+ if (r < 0) {
+ log_warning("Failed to allocate new private connection bus: %s", strerror(-r));
+ return 0;
+ }
- if (!(message = dbus_message_new_method_call(
- DBUS_SERVICE_DBUS,
- DBUS_PATH_DBUS,
- DBUS_INTERFACE_DBUS,
- "ListNames")))
- goto oom;
+ r = sd_bus_set_fd(bus, nfd, nfd);
+ if (r < 0) {
+ log_warning("Failed to set fd on new connection bus: %s", strerror(-r));
+ return 0;
+ }
- if (!dbus_connection_send_with_reply(m->api_bus, message, &pending, -1))
- goto oom;
+ nfd = -1;
- if (!dbus_pending_call_set_notify(pending, query_name_list_pending_cb, m, NULL))
- goto oom;
+ r = bus_check_peercred(bus);
+ if (r < 0) {
+ log_warning("Incoming private connection from unprivileged client, refusing: %s", strerror(-r));
+ return 0;
+ }
- dbus_message_unref(message);
- dbus_pending_call_unref(pending);
+ assert_se(sd_id128_randomize(&id) >= 0);
- /* We simple ask for the list and don't wait for it. Sooner or
- * later we'll get it. */
+ r = sd_bus_set_server(bus, 1, id);
+ if (r < 0) {
+ log_warning("Failed to enable server support for new connection bus: %s", strerror(-r));
+ return 0;
+ }
- return 0;
+ r = sd_bus_start(bus);
+ if (r < 0) {
+ log_warning("Failed to start new connection bus: %s", strerror(-r));
+ return 0;
+ }
-oom:
- if (pending) {
- dbus_pending_call_cancel(pending);
- dbus_pending_call_unref(pending);
+ r = sd_bus_attach_event(bus, m->event, SD_EVENT_PRIORITY_NORMAL);
+ if (r < 0) {
+ log_warning("Failed to attach new connection bus to event loop: %s", strerror(-r));
+ return 0;
}
- if (message)
- dbus_message_unref(message);
+ if (m->running_as == SYSTEMD_SYSTEM) {
+ /* When we run as system instance we get the Released
+ * signal via a direct connection */
+
+ r = sd_bus_add_match(
+ bus,
+ "type='signal',"
+ "interface='org.freedesktop.systemd1.Agent',"
+ "member='Released',"
+ "path='/org/freedesktop/systemd1/agent'",
+ signal_agent_released, m);
+
+ if (r < 0) {
+ log_warning("Failed to register Released match on new connection bus: %s", strerror(-r));
+ return 0;
+ }
+ }
- return -ENOMEM;
-}
+ r = bus_setup_disconnected_match(m, bus);
+ if (r < 0)
+ return 0;
-static int bus_setup_loop(Manager *m, DBusConnection *bus) {
- assert(m);
- assert(bus);
+ r = bus_setup_api_vtables(m, bus);
+ if (r < 0) {
+ log_warning("Failed to set up API vtables on new connection bus: %s", strerror(-r));
+ return 0;
+ }
- dbus_connection_set_exit_on_disconnect(bus, FALSE);
+ r = set_put(m->private_buses, bus);
+ if (r < 0) {
+ log_warning("Failed to add new conenction bus to set: %s", strerror(-r));
+ return 0;
+ }
- if (!dbus_connection_set_watch_functions(bus, bus_add_watch, bus_remove_watch, bus_toggle_watch, m, NULL) ||
- !dbus_connection_set_timeout_functions(bus, bus_add_timeout, bus_remove_timeout, bus_toggle_timeout, m, NULL))
- return log_oom();
+ bus = NULL;
- if (set_put(m->bus_connections_for_dispatch, bus) < 0)
- return log_oom();
+ log_debug("Accepted new private connection.");
- dbus_connection_set_dispatch_status_function(bus, bus_dispatch_status, m, NULL);
return 0;
}
-static dbus_bool_t allow_only_same_user(DBusConnection *connection, unsigned long uid, void *data) {
- return uid == 0 || uid == geteuid();
-}
-
-static void bus_new_connection(
- DBusServer *server,
- DBusConnection *new_connection,
- void *data) {
-
- Manager *m = data;
+static int bus_list_names(Manager *m, sd_bus *bus) {
+ _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+ const char *name;
+ int r;
assert(m);
+ assert(bus);
- if (set_size(m->bus_connections) >= CONNECTIONS_MAX) {
- log_error("Too many concurrent connections.");
- return;
+ r = sd_bus_call_method(
+ bus,
+ "org.freedesktop.DBus",
+ "/org/freedesktop/DBus",
+ "org.freedesktop.DBus",
+ "ListNames",
+ &error, &reply,
+ NULL);
+ if (r < 0) {
+ log_error("Failed to get initial list of names: %s", bus_error_message(&error, r));
+ return r;
}
- dbus_connection_set_unix_user_function(new_connection, allow_only_same_user, NULL, NULL);
-
- if (bus_setup_loop(m, new_connection) < 0)
- return;
+ r = sd_bus_message_enter_container(reply, 'a', "s");
+ if (r < 0)
+ return bus_log_parse_error(r);
- if (!dbus_connection_register_object_path(new_connection, "/org/freedesktop/systemd1", &bus_manager_vtable, m) ||
- !dbus_connection_register_fallback(new_connection, "/org/freedesktop/systemd1/unit", &bus_unit_vtable, m) ||
- !dbus_connection_register_fallback(new_connection, "/org/freedesktop/systemd1/job", &bus_job_vtable, m) ||
- !dbus_connection_add_filter(new_connection, private_bus_message_filter, m, NULL)) {
- log_oom();
- return;
- }
+ /* This is a bit hacky, we say the owner of the name is the
+ * name itself, because we don't want the extra traffic to
+ * figure out the real owner. */
+ while ((r = sd_bus_message_read(reply, "s", &name)) > 0)
+ manager_dispatch_bus_name_owner_changed(m, name, NULL, name);
+ if (r < 0)
+ return bus_log_parse_error(r);
- log_debug("Accepted connection on private bus.");
+ r = sd_bus_message_exit_container(reply);
+ if (r < 0)
+ return bus_log_parse_error(r);
- dbus_connection_ref(new_connection);
+ return 0;
}
-static int init_registered_system_bus(Manager *m) {
- char *id = NULL;
+static int bus_setup_api(Manager *m, sd_bus *bus) {
+ int r;
- if (!dbus_connection_add_filter(m->system_bus, system_bus_message_filter, m, NULL))
- return log_oom();
+ assert(m);
+ assert(bus);
- if (m->running_as != SYSTEMD_SYSTEM) {
- DBusError error;
+ r = bus_setup_api_vtables(m, bus);
+ if (r < 0)
+ return r;
- dbus_error_init(&error);
+ r = sd_bus_add_match(
+ bus,
+ "type='signal',"
+ "sender='org.freedesktop.DBus',"
+ "path='/org/freedesktop/DBus',"
+ "interface='org.freedesktop.DBus',"
+ "member='NameOwnerChanged'",
+ signal_name_owner_changed, m);
+ if (r < 0)
+ log_warning("Failed to subscribe to NameOwnerChanged signal: %s", strerror(-r));
+
+ r = sd_bus_add_match(
+ bus,
+ "type='signal',"
+ "sender='org.freedesktop.DBus',"
+ "path='/org/freedesktop/DBus',"
+ "interface='org.freedesktop.systemd1.Activator',"
+ "member='ActivationRequest'",
+ signal_activation_request, m);
+ if (r < 0)
+ log_warning("Failed to subscribe to activation signal: %s", strerror(-r));
- dbus_bus_add_match(m->system_bus,
- "type='signal',"
- "interface='org.freedesktop.systemd1.Agent',"
- "member='Released',"
- "path='/org/freedesktop/systemd1/agent'",
- &error);
+ /* Allow replacing of our name, to ease implementation of
+ * reexecution, where we keep the old connection open until
+ * after the new connection is set up and the name installed
+ * to allow clients to synchronously wait for reexecution to
+ * finish */
+ r = sd_bus_request_name(bus,"org.freedesktop.systemd1", SD_BUS_NAME_ALLOW_REPLACEMENT|SD_BUS_NAME_REPLACE_EXISTING);
+ if (r < 0) {
+ log_error("Failed to register name: %s", strerror(-r));
+ return r;
+ }
- if (dbus_error_is_set(&error)) {
- log_error("Failed to register match: %s", bus_error_message(&error));
- dbus_error_free(&error);
- return -1;
- }
+ if (r != SD_BUS_NAME_PRIMARY_OWNER) {
+ log_error("Failed to acquire name.");
+ return -EEXIST;
}
- log_debug("Successfully connected to system D-Bus bus %s as %s",
- strnull((id = dbus_connection_get_server_id(m->system_bus))),
- strnull(dbus_bus_get_unique_name(m->system_bus)));
- dbus_free(id);
+ bus_list_names(m, bus);
+ log_debug("Successfully connected to API bus.");
return 0;
}
-static int init_registered_api_bus(Manager *m) {
+static int bus_init_api(Manager *m) {
+ _cleanup_bus_unref_ sd_bus *bus = NULL;
int r;
- if (!dbus_connection_register_object_path(m->api_bus, "/org/freedesktop/systemd1", &bus_manager_vtable, m) ||
- !dbus_connection_register_fallback(m->api_bus, "/org/freedesktop/systemd1/unit", &bus_unit_vtable, m) ||
- !dbus_connection_register_fallback(m->api_bus, "/org/freedesktop/systemd1/job", &bus_job_vtable, m) ||
- !dbus_connection_add_filter(m->api_bus, api_bus_message_filter, m, NULL))
- return log_oom();
-
- /* Get NameOwnerChange messages */
- dbus_bus_add_match(m->api_bus,
- "type='signal',"
- "sender='"DBUS_SERVICE_DBUS"',"
- "interface='"DBUS_INTERFACE_DBUS"',"
- "member='NameOwnerChanged',"
- "path='"DBUS_PATH_DBUS"'",
- NULL);
-
- /* Get activation requests */
- dbus_bus_add_match(m->api_bus,
- "type='signal',"
- "sender='"DBUS_SERVICE_DBUS"',"
- "interface='org.freedesktop.systemd1.Activator',"
- "member='ActivationRequest',"
- "path='"DBUS_PATH_DBUS"'",
- NULL);
-
- r = request_name(m);
- if (r < 0)
- return r;
-
- r = query_name_list(m);
- if (r < 0)
- return r;
-
- if (m->running_as == SYSTEMD_USER) {
- char *id = NULL;
-
- log_debug("Successfully connected to API D-Bus bus %s as %s",
- strnull((id = dbus_connection_get_server_id(m->api_bus))),
- strnull(dbus_bus_get_unique_name(m->api_bus)));
- dbus_free(id);
- } else
- log_debug("Successfully initialized API on the system bus");
+ if (m->api_bus)
+ return 0;
- return 0;
-}
+ /* The API and system bus is the same if we are running in system mode */
+ if (m->running_as == SYSTEMD_SYSTEM && m->system_bus)
+ bus = sd_bus_ref(m->system_bus);
+ else {
+ if (m->running_as == SYSTEMD_SYSTEM)
+ r = sd_bus_open_system(&bus);
+ else
+ r = sd_bus_open_user(&bus);
-static void bus_register_cb(DBusPendingCall *pending, void *userdata) {
- Manager *m = userdata;
- DBusConnection **conn;
- DBusMessage *reply;
- DBusError error;
- const char *name;
- int r = 0;
-
- dbus_error_init(&error);
-
- conn = dbus_pending_call_get_data(pending, m->conn_data_slot);
- assert(conn == &m->system_bus || conn == &m->api_bus);
-
- reply = dbus_pending_call_steal_reply(pending);
-
- switch (dbus_message_get_type(reply)) {
- case DBUS_MESSAGE_TYPE_ERROR:
- assert_se(dbus_set_error_from_message(&error, reply));
- log_warning("Failed to register to bus: %s", bus_error_message(&error));
- r = -1;
- break;
- case DBUS_MESSAGE_TYPE_METHOD_RETURN:
- if (!dbus_message_get_args(reply, &error,
- DBUS_TYPE_STRING, &name,
- DBUS_TYPE_INVALID)) {
- log_error("Failed to parse Hello reply: %s", bus_error_message(&error));
- r = -1;
- break;
+ if (r < 0) {
+ log_debug("Failed to connect to API bus, retrying later...");
+ return 0;
}
- log_debug("Received name %s in reply to Hello", name);
- if (!dbus_bus_set_unique_name(*conn, name)) {
- log_error("Failed to set unique name");
- r = -1;
- break;
+ r = sd_bus_attach_event(bus, m->event, SD_EVENT_PRIORITY_NORMAL);
+ if (r < 0) {
+ log_error("Failed to attach API bus to event loop: %s", strerror(-r));
+ return 0;
}
- if (conn == &m->system_bus) {
- r = init_registered_system_bus(m);
- if (r == 0 && m->running_as == SYSTEMD_SYSTEM)
- r = init_registered_api_bus(m);
- } else
- r = init_registered_api_bus(m);
-
- break;
- default:
- assert_not_reached("Invalid reply message");
+ r = bus_setup_disconnected_match(m, bus);
+ if (r < 0)
+ return 0;
}
- dbus_message_unref(reply);
- dbus_error_free(&error);
-
+ r = bus_setup_api(m, bus);
if (r < 0) {
- if (conn == &m->system_bus) {
- log_debug("Failed setting up the system bus");
- bus_done_system(m);
- } else {
- log_debug("Failed setting up the API bus");
- bus_done_api(m);
- }
+ log_error("Failed to set up API bus: %s", strerror(-r));
+ return 0;
}
-}
-
-static int manager_bus_async_register(Manager *m, DBusConnection **conn) {
- DBusMessage *message = NULL;
- DBusPendingCall *pending = NULL;
-
- message = dbus_message_new_method_call(DBUS_SERVICE_DBUS,
- DBUS_PATH_DBUS,
- DBUS_INTERFACE_DBUS,
- "Hello");
- if (!message)
- goto oom;
- if (!dbus_connection_send_with_reply(*conn, message, &pending, -1))
- goto oom;
-
- if (!dbus_pending_call_set_data(pending, m->conn_data_slot, conn, NULL))
- goto oom;
-
- if (!dbus_pending_call_set_notify(pending, bus_register_cb, m, NULL))
- goto oom;
-
- dbus_message_unref(message);
- dbus_pending_call_unref(pending);
+ m->api_bus = bus;
+ bus = NULL;
return 0;
-oom:
- if (pending) {
- dbus_pending_call_cancel(pending);
- dbus_pending_call_unref(pending);
- }
-
- if (message)
- dbus_message_unref(message);
-
- return -ENOMEM;
}
-static DBusConnection* manager_bus_connect_private(Manager *m, DBusBusType type) {
- const char *address;
- DBusConnection *connection;
- DBusError error;
-
- switch (type) {
- case DBUS_BUS_SYSTEM:
- address = secure_getenv("DBUS_SYSTEM_BUS_ADDRESS");
- if (!address || !address[0])
- address = DBUS_SYSTEM_BUS_DEFAULT_ADDRESS;
- break;
- case DBUS_BUS_SESSION:
- address = secure_getenv("DBUS_SESSION_BUS_ADDRESS");
- if (!address || !address[0])
- address = DBUS_SESSION_BUS_DEFAULT_ADDRESS;
- break;
- default:
- assert_not_reached("Invalid bus type");
- }
+static int bus_setup_system(Manager *m, sd_bus *bus) {
+ int r;
- dbus_error_init(&error);
+ assert(m);
+ assert(bus);
- connection = dbus_connection_open_private(address, &error);
- if (!connection) {
- log_warning("Failed to open private bus connection: %s", bus_error_message(&error));
- goto fail;
- }
+ if (m->running_as == SYSTEMD_SYSTEM)
+ return 0;
+
+ /* If we are a user instance we get the Released message via
+ * the system bus */
+ r = sd_bus_add_match(
+ bus,
+ "type='signal',"
+ "interface='org.freedesktop.systemd1.Agent',"
+ "member='Released',"
+ "path='/org/freedesktop/systemd1/agent'",
+ signal_agent_released, m);
- return connection;
+ if (r < 0)
+ log_warning("Failed to register Released match on system bus: %s", strerror(-r));
-fail:
- dbus_error_free(&error);
- return NULL;
+ log_debug("Successfully connected to system bus.");
+ return 0;
}
static int bus_init_system(Manager *m) {
+ _cleanup_bus_unref_ sd_bus *bus = NULL;
int r;
if (m->system_bus)
return 0;
- m->system_bus = manager_bus_connect_private(m, DBUS_BUS_SYSTEM);
- if (!m->system_bus) {
- log_debug("Failed to connect to system D-Bus, retrying later");
- r = 0;
- goto fail;
+ /* The API and system bus is the same if we are running in system mode */
+ if (m->running_as == SYSTEMD_SYSTEM && m->api_bus) {
+ m->system_bus = sd_bus_ref(m->api_bus);
+ return 0;
}
- r = bus_setup_loop(m, m->system_bus);
- if (r < 0)
- goto fail;
+ r = sd_bus_open_system(&bus);
+ if (r < 0) {
+ log_debug("Failed to connect to system bus, retrying later...");
+ return 0;
+ }
- r = manager_bus_async_register(m, &m->system_bus);
+ r = bus_setup_disconnected_match(m, bus);
if (r < 0)
- goto fail;
-
- return 0;
-fail:
- bus_done_system(m);
-
- return r;
-}
-
-static int bus_init_api(Manager *m) {
- int r;
-
- if (m->api_bus)
return 0;
- if (m->running_as == SYSTEMD_SYSTEM) {
- m->api_bus = m->system_bus;
- /* In this mode there is no distinct connection to the API bus,
- * the API is published on the system bus.
- * bus_register_cb() is aware of that and will init the API
- * when the system bus gets registered.
- * No need to setup anything here. */
+ r = sd_bus_attach_event(bus, m->event, SD_EVENT_PRIORITY_NORMAL);
+ if (r < 0) {
+ log_error("Failed to attach system bus to event loop: %s", strerror(-r));
return 0;
}
- m->api_bus = manager_bus_connect_private(m, DBUS_BUS_SESSION);
- if (!m->api_bus) {
- log_debug("Failed to connect to API D-Bus, retrying later");
- r = 0;
- goto fail;
+ r = bus_setup_system(m, bus);
+ if (r < 0) {
+ log_error("Fauiled to set up system bus: %s", strerror(-r));
+ return 0;
}
- r = bus_setup_loop(m, m->api_bus);
- if (r < 0)
- goto fail;
-
- r = manager_bus_async_register(m, &m->api_bus);
- if (r < 0)
- goto fail;
+ m->system_bus = bus;
+ bus = NULL;
return 0;
-fail:
- bus_done_api(m);
-
- return r;
}
static int bus_init_private(Manager *m) {
- DBusError error;
- int r;
- static const char *const external_only[] = {
- "EXTERNAL",
- NULL
+ _cleanup_close_ int fd = -1;
+ union sockaddr_union sa = {
+ .un.sun_family = AF_UNIX
};
+ sd_event_source *s;
+ socklen_t salen;
+ int r;
assert(m);
- dbus_error_init(&error);
-
- if (m->private_bus)
+ if (m->private_listen_fd >= 0)
return 0;
if (m->running_as == SYSTEMD_SYSTEM) {
@@ -1069,90 +885,72 @@ static int bus_init_private(Manager *m) {
if (getpid() != 1)
return 0;
- unlink("/run/systemd/private");
- m->private_bus = dbus_server_listen("unix:path=/run/systemd/private", &error);
+ strcpy(sa.un.sun_path, "/run/systemd/private");
+ salen = offsetof(union sockaddr_union, un.sun_path) + sizeof("/run/systemd/private") - 1;
} else {
+ size_t left = sizeof(sa.un.sun_path);
+ char *p = sa.un.sun_path;
const char *e;
- char *p;
- char *escaped;
e = secure_getenv("XDG_RUNTIME_DIR");
- if (!e)
- return 0;
-
- if (asprintf(&p, "%s/systemd/private", e) < 0) {
- r = log_oom();
- goto fail;
+ if (!e) {
+ log_error("Failed to determine XDG_RUNTIME_DIR");
+ return -EHOSTDOWN;
}
- mkdir_parents_label(p, 0755);
- unlink(p);
- free(p);
+ left = strpcpy(&p, left, e);
+ left = strpcpy(&p, left, "/systemd/private");
- escaped = dbus_address_escape_value(e);
- if (!escaped) {
- r = log_oom();
- goto fail;
- }
- if (asprintf(&p, "unix:path=%s/systemd/private", escaped) < 0) {
- dbus_free(escaped);
- r = log_oom();
- goto fail;
- }
- dbus_free(escaped);
+ salen = sizeof(sa.un) - left;
+
+ mkdir_parents_label(sa.un.sun_path, 0755);
+ }
+
+ unlink(sa.un.sun_path);
- m->private_bus = dbus_server_listen(p, &error);
- free(p);
+ fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
+ if (fd < 0) {
+ log_error("Failed to allocate private socket: %m");
+ return -errno;
}
- if (!m->private_bus) {
- log_error("Failed to create private D-Bus server: %s", bus_error_message(&error));
- r = -EIO;
- goto fail;
+ r = bind(fd, &sa.sa, salen);
+ if (r < 0) {
+ log_error("Failed to bind private socket: %m");
+ return -errno;
}
- if (!dbus_server_set_auth_mechanisms(m->private_bus, (const char**) external_only) ||
- !dbus_server_set_watch_functions(m->private_bus, bus_add_watch, bus_remove_watch, bus_toggle_watch, m, NULL) ||
- !dbus_server_set_timeout_functions(m->private_bus, bus_add_timeout, bus_remove_timeout, bus_toggle_timeout, m, NULL)) {
- r = log_oom();
- goto fail;
+ r = listen(fd, SOMAXCONN);
+ if (r < 0) {
+ log_error("Failed to make private socket listening: %m");
+ return -errno;
}
- dbus_server_set_new_connection_function(m->private_bus, bus_new_connection, m, NULL);
+ r = sd_event_add_io(m->event, fd, EPOLLIN, bus_on_connection, m, &s);
+ if (r < 0) {
+ log_error("Failed to allocate event source: %s", strerror(-r));
+ return r;
+ }
+
+ m->private_listen_fd = fd;
+ m->private_listen_event_source = s;
+ fd = -1;
log_debug("Successfully created private D-Bus server.");
return 0;
-
-fail:
- bus_done_private(m);
- dbus_error_free(&error);
-
- return r;
}
int bus_init(Manager *m, bool try_bus_connect) {
int r;
- if (set_ensure_allocated(&m->bus_connections, trivial_hash_func, trivial_compare_func) < 0 ||
- set_ensure_allocated(&m->bus_connections_for_dispatch, trivial_hash_func, trivial_compare_func) < 0)
- return log_oom();
-
- if (m->name_data_slot < 0)
- if (!dbus_pending_call_allocate_data_slot(&m->name_data_slot))
- return log_oom();
-
- if (m->conn_data_slot < 0)
- if (!dbus_pending_call_allocate_data_slot(&m->conn_data_slot))
- return log_oom();
-
- if (m->subscribed_data_slot < 0)
- if (!dbus_connection_allocate_data_slot(&m->subscribed_data_slot))
- return log_oom();
-
if (try_bus_connect) {
- if ((r = bus_init_system(m)) < 0 ||
- (r = bus_init_api(m)) < 0)
+ r = bus_init_system(m);
+ if (r < 0)
+ return r;
+
+ r = bus_init_api(m);
+ if (r < 0)
return r;
}
@@ -1163,415 +961,113 @@ int bus_init(Manager *m, bool try_bus_connect) {
return 0;
}
-static void shutdown_connection(Manager *m, DBusConnection *c) {
- Job *j;
+static void destroy_bus(Manager *m, sd_bus **bus) {
Iterator i;
+ Job *j;
- HASHMAP_FOREACH(j, m->jobs, i) {
- JobBusClient *cl, *nextcl;
- LIST_FOREACH_SAFE(client, cl, nextcl, j->bus_client_list) {
- if (cl->bus == c) {
- LIST_REMOVE(client, j->bus_client_list, cl);
- free(cl);
- }
- }
- }
-
- set_remove(m->bus_connections, c);
- set_remove(m->bus_connections_for_dispatch, c);
- set_free_free(BUS_CONNECTION_SUBSCRIBED(m, c));
-
- if (m->queued_message_connection == c) {
- m->queued_message_connection = NULL;
-
- if (m->queued_message) {
- dbus_message_unref(m->queued_message);
- m->queued_message = NULL;
- }
- }
-
- dbus_connection_set_dispatch_status_function(c, NULL, NULL, NULL);
- /* system manager cannot afford to block on DBus */
- if (m->running_as != SYSTEMD_SYSTEM)
- dbus_connection_flush(c);
- dbus_connection_close(c);
- dbus_connection_unref(c);
-}
+ assert(m);
+ assert(bus);
-static void bus_done_api(Manager *m) {
- if (!m->api_bus)
+ if (!*bus)
return;
- if (m->running_as == SYSTEMD_USER)
- shutdown_connection(m, m->api_bus);
+ /* Get rid of tracked clients on this bus */
+ bus_client_untrack_bus(m->subscribed, *bus);
+ HASHMAP_FOREACH(j, m->jobs, i)
+ bus_client_untrack_bus(j->subscribed, *bus);
- m->api_bus = NULL;
+ /* Get rid of queued message on this bus */
+ if (m->queued_message_bus == *bus) {
+ m->queued_message_bus = sd_bus_unref(m->queued_message_bus);
- if (m->queued_message) {
- dbus_message_unref(m->queued_message);
- m->queued_message = NULL;
+ if (m->queued_message)
+ m->queued_message = sd_bus_message_unref(m->queued_message);
}
-}
-static void bus_done_system(Manager *m) {
- if (!m->system_bus)
- return;
-
- if (m->running_as == SYSTEMD_SYSTEM)
- bus_done_api(m);
-
- shutdown_connection(m, m->system_bus);
- m->system_bus = NULL;
-}
-
-static void bus_done_private(Manager *m) {
- if (!m->private_bus)
- return;
+ /* Possibly flush unwritten data, but only if we are
+ * unprivileged, since we don't want to sync here */
+ if (m->running_as != SYSTEMD_SYSTEM)
+ sd_bus_flush(*bus);
- dbus_server_disconnect(m->private_bus);
- dbus_server_unref(m->private_bus);
- m->private_bus = NULL;
+ /* And destroy the object */
+ sd_bus_close(*bus);
+ *bus = sd_bus_unref(*bus);
}
void bus_done(Manager *m) {
- DBusConnection *c;
-
- bus_done_api(m);
- bus_done_system(m);
- bus_done_private(m);
-
- while ((c = set_steal_first(m->bus_connections)))
- shutdown_connection(m, c);
-
- while ((c = set_steal_first(m->bus_connections_for_dispatch)))
- shutdown_connection(m, c);
-
- set_free(m->bus_connections);
- set_free(m->bus_connections_for_dispatch);
-
- if (m->name_data_slot >= 0)
- dbus_pending_call_free_data_slot(&m->name_data_slot);
-
- if (m->conn_data_slot >= 0)
- dbus_pending_call_free_data_slot(&m->conn_data_slot);
-
- if (m->subscribed_data_slot >= 0)
- dbus_connection_free_data_slot(&m->subscribed_data_slot);
-}
-
-static void query_pid_pending_cb(DBusPendingCall *pending, void *userdata) {
- Manager *m = userdata;
- DBusMessage *reply;
- DBusError error;
- const char *name;
-
- dbus_error_init(&error);
-
- assert_se(name = BUS_PENDING_CALL_NAME(m, pending));
- assert_se(reply = dbus_pending_call_steal_reply(pending));
-
- switch (dbus_message_get_type(reply)) {
-
- case DBUS_MESSAGE_TYPE_ERROR:
-
- assert_se(dbus_set_error_from_message(&error, reply));
- log_warning("GetConnectionUnixProcessID() failed: %s", bus_error_message(&error));
- break;
-
- case DBUS_MESSAGE_TYPE_METHOD_RETURN: {
- uint32_t r;
-
- if (!dbus_message_get_args(reply,
- &error,
- DBUS_TYPE_UINT32, &r,
- DBUS_TYPE_INVALID)) {
- log_error("Failed to parse GetConnectionUnixProcessID() reply: %s", bus_error_message(&error));
- break;
- }
-
- manager_dispatch_bus_query_pid_done(m, name, (pid_t) r);
- break;
- }
-
- default:
- assert_not_reached("Invalid reply message");
- }
-
- dbus_message_unref(reply);
- dbus_error_free(&error);
-}
-
-int bus_query_pid(Manager *m, const char *name) {
- DBusMessage *message = NULL;
- DBusPendingCall *pending = NULL;
- char *n = NULL;
+ sd_bus *b;
assert(m);
- assert(name);
-
- if (!(message = dbus_message_new_method_call(
- DBUS_SERVICE_DBUS,
- DBUS_PATH_DBUS,
- DBUS_INTERFACE_DBUS,
- "GetConnectionUnixProcessID")))
- goto oom;
-
- if (!(dbus_message_append_args(
- message,
- DBUS_TYPE_STRING, &name,
- DBUS_TYPE_INVALID)))
- goto oom;
-
- if (!dbus_connection_send_with_reply(m->api_bus, message, &pending, -1))
- goto oom;
-
- if (!(n = strdup(name)))
- goto oom;
-
- if (!dbus_pending_call_set_data(pending, m->name_data_slot, n, free))
- goto oom;
-
- n = NULL;
-
- if (!dbus_pending_call_set_notify(pending, query_pid_pending_cb, m, NULL))
- goto oom;
- dbus_message_unref(message);
- dbus_pending_call_unref(pending);
+ if (m->api_bus)
+ destroy_bus(m, &m->api_bus);
+ if (m->system_bus)
+ destroy_bus(m, &m->system_bus);
+ while ((b = set_steal_first(m->private_buses)))
+ destroy_bus(m, &b);
- return 0;
+ set_free(m->private_buses);
+ set_free(m->subscribed);
-oom:
- free(n);
+ if (m->private_listen_event_source)
+ m->private_listen_event_source = sd_event_source_unref(m->private_listen_event_source);
- if (pending) {
- dbus_pending_call_cancel(pending);
- dbus_pending_call_unref(pending);
+ if (m->private_listen_fd >= 0) {
+ close_nointr_nofail(m->private_listen_fd);
+ m->private_listen_fd = -1;
}
-
- if (message)
- dbus_message_unref(message);
-
- return -ENOMEM;
-}
-
-int bus_broadcast(Manager *m, DBusMessage *message) {
- bool oom = false;
- Iterator i;
- DBusConnection *c;
-
- assert(m);
- assert(message);
-
- SET_FOREACH(c, m->bus_connections_for_dispatch, i)
- if (c != m->system_bus || m->running_as == SYSTEMD_SYSTEM)
- oom = !dbus_connection_send(c, message, NULL);
-
- SET_FOREACH(c, m->bus_connections, i)
- if (c != m->system_bus || m->running_as == SYSTEMD_SYSTEM)
- oom = !dbus_connection_send(c, message, NULL);
-
- return oom ? -ENOMEM : 0;
-}
-
-bool bus_has_subscriber(Manager *m) {
- Iterator i;
- DBusConnection *c;
-
- assert(m);
-
- /* If we are reloading then we might not have deserialized the
- subscribers yet, hence let's assume that there are some */
-
- if (m->n_reloading > 0)
- return true;
-
- SET_FOREACH(c, m->bus_connections_for_dispatch, i)
- if (bus_connection_has_subscriber(m, c))
- return true;
-
- SET_FOREACH(c, m->bus_connections, i)
- if (bus_connection_has_subscriber(m, c))
- return true;
-
- return false;
-}
-
-bool bus_connection_has_subscriber(Manager *m, DBusConnection *c) {
- assert(m);
- assert(c);
-
- return !set_isempty(BUS_CONNECTION_SUBSCRIBED(m, c));
}
int bus_fdset_add_all(Manager *m, FDSet *fds) {
Iterator i;
- DBusConnection *c;
+ sd_bus *b;
+ int fd;
assert(m);
assert(fds);
/* When we are about to reexecute we add all D-Bus fds to the
* set to pass over to the newly executed systemd. They won't
- * be used there however, except that they are closed at the
+ * be used there however, except thatt they are closed at the
* very end of deserialization, those making it possible for
* clients to synchronously wait for systemd to reexec by
* simply waiting for disconnection */
- SET_FOREACH(c, m->bus_connections_for_dispatch, i) {
- int fd;
-
- if (dbus_connection_get_unix_fd(c, &fd)) {
+ if (m->api_bus) {
+ fd = sd_bus_get_fd(m->api_bus);
+ if (fd >= 0) {
fd = fdset_put_dup(fds, fd);
-
if (fd < 0)
return fd;
}
}
- SET_FOREACH(c, m->bus_connections, i) {
- int fd;
-
- if (dbus_connection_get_unix_fd(c, &fd)) {
+ SET_FOREACH(b, m->private_buses, i) {
+ fd = sd_bus_get_fd(b);
+ if (fd >= 0) {
fd = fdset_put_dup(fds, fd);
-
if (fd < 0)
return fd;
}
}
- return 0;
-}
-
-void bus_broadcast_finished(
- Manager *m,
- usec_t firmware_usec,
- usec_t loader_usec,
- usec_t kernel_usec,
- usec_t initrd_usec,
- usec_t userspace_usec,
- usec_t total_usec) {
-
- _cleanup_dbus_message_unref_ DBusMessage *message = NULL;
-
- assert(m);
-
- message = dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "StartupFinished");
- if (!message) {
- log_oom();
- return;
- }
-
- assert_cc(sizeof(usec_t) == sizeof(uint64_t));
- if (!dbus_message_append_args(message,
- DBUS_TYPE_UINT64, &firmware_usec,
- DBUS_TYPE_UINT64, &loader_usec,
- DBUS_TYPE_UINT64, &kernel_usec,
- DBUS_TYPE_UINT64, &initrd_usec,
- DBUS_TYPE_UINT64, &userspace_usec,
- DBUS_TYPE_UINT64, &total_usec,
- DBUS_TYPE_INVALID)) {
- log_oom();
- return;
- }
-
-
- if (bus_broadcast(m, message) < 0) {
- log_oom();
- return;
- }
-}
-
-void bus_broadcast_reloading(Manager *m, bool active) {
-
- _cleanup_dbus_message_unref_ DBusMessage *message = NULL;
- dbus_bool_t b = active;
-
- assert(m);
-
- message = dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "Reloading");
- if (!message) {
- log_oom();
- return;
- }
-
- assert_cc(sizeof(usec_t) == sizeof(uint64_t));
- if (!dbus_message_append_args(message,
- DBUS_TYPE_BOOLEAN, &b,
- DBUS_TYPE_INVALID)) {
- log_oom();
- return;
- }
-
-
- if (bus_broadcast(m, message) < 0) {
- log_oom();
- return;
- }
-}
-
-Set *bus_acquire_subscribed(Manager *m, DBusConnection *c) {
- Set *s;
-
- assert(m);
- assert(c);
-
- s = BUS_CONNECTION_SUBSCRIBED(m, c);
- if (s)
- return s;
-
- s = set_new(string_hash_func, string_compare_func);
- if (!s)
- return NULL;
-
- if (!dbus_connection_set_data(c, m->subscribed_data_slot, s, NULL)) {
- set_free(s);
- return NULL;
- }
+ /* We don't offer any APIs on the system bus (well, unless it
+ * is the same as the API bus) hence we don't bother with it
+ * here */
- return s;
+ return 0;
}
void bus_serialize(Manager *m, FILE *f) {
- char *client;
- Iterator i;
- Set *s;
-
assert(m);
assert(f);
- if (!m->api_bus)
- return;
-
- s = BUS_CONNECTION_SUBSCRIBED(m, m->api_bus);
- SET_FOREACH(client, s, i)
- fprintf(f, "subscribed=%s\n", client);
+ bus_client_track_serialize(m, f, m->subscribed);
}
int bus_deserialize_item(Manager *m, const char *line) {
- const char *e;
- char *b;
- Set *s;
-
assert(m);
assert(line);
- if (!m->api_bus)
- return 0;
-
- e = startswith(line, "subscribed=");
- if (!e)
- return 0;
-
- s = bus_acquire_subscribed(m, m->api_bus);
- if (!s)
- return -ENOMEM;
-
- b = strdup(e);
- if (!b)
- return -ENOMEM;
-
- set_consume(s, b);
-
- return 1;
+ return bus_client_track_deserialize_item(m, &m->subscribed, line);
}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-17 14:29:38 +0000