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-rw-r--r--src/machine/machined-dbus.c824
1 files changed, 824 insertions, 0 deletions
diff --git a/src/machine/machined-dbus.c b/src/machine/machined-dbus.c
new file mode 100644
index 0000000000..a2e00d7102
--- /dev/null
+++ b/src/machine/machined-dbus.c
@@ -0,0 +1,824 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2011 Lennart Poettering
+
+ 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 <errno.h>
+#include <string.h>
+#include <unistd.h>
+#include <pwd.h>
+
+#include <systemd/sd-id128.h>
+#include <systemd/sd-messages.h>
+
+#include "machined.h"
+#include "dbus-common.h"
+#include "strv.h"
+#include "mkdir.h"
+#include "path-util.h"
+#include "special.h"
+#include "sleep-config.h"
+#include "fileio-label.h"
+#include "label.h"
+#include "utf8.h"
+#include "unit-name.h"
+#include "bus-errors.h"
+#include "virt.h"
+
+#define BUS_MANAGER_INTERFACE \
+ " <interface name=\"org.freedesktop.machine1.Manager\">\n" \
+ " <method name=\"GetMachine\">\n" \
+ " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
+ " <arg name=\"machine\" type=\"o\" direction=\"out\"/>\n" \
+ " </method>\n" \
+ " <method name=\"GetMachineByPID\">\n" \
+ " <arg name=\"pid\" type=\"u\" direction=\"in\"/>\n" \
+ " <arg name=\"machine\" type=\"o\" direction=\"out\"/>\n" \
+ " </method>\n" \
+ " <method name=\"ListMachines\">\n" \
+ " <arg name=\"machines\" type=\"a(ssso)\" direction=\"out\"/>\n" \
+ " </method>\n" \
+ " <method name=\"CreateMachine\">\n" \
+ " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
+ " <arg name=\"id\" type=\"ay\" direction=\"in\"/>\n" \
+ " <arg name=\"service\" type=\"s\" direction=\"in\"/>\n" \
+ " <arg name=\"class\" type=\"s\" direction=\"in\"/>\n" \
+ " <arg name=\"leader\" type=\"u\" direction=\"in\"/>\n" \
+ " <arg name=\"root_directory\" type=\"s\" direction=\"in\"/>\n" \
+ " <arg name=\"scope_properties\" type=\"a(sv)\" direction=\"in\"/>\n" \
+ " <arg name=\"path\" type=\"o\" direction=\"out\"/>\n" \
+ " </method>\n" \
+ " <method name=\"KillMachine\">\n" \
+ " <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
+ " <arg name=\"who\" type=\"s\" direction=\"in\"/>\n" \
+ " <arg name=\"signal\" type=\"s\" direction=\"in\"/>\n" \
+ " </method>\n" \
+ " <method name=\"TerminateMachine\">\n" \
+ " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
+ " </method>\n" \
+ " <signal name=\"MachineNew\">\n" \
+ " <arg name=\"machine\" type=\"s\"/>\n" \
+ " <arg name=\"path\" type=\"o\"/>\n" \
+ " </signal>\n" \
+ " <signal name=\"MachineRemoved\">\n" \
+ " <arg name=\"machine\" type=\"s\"/>\n" \
+ " <arg name=\"path\" type=\"o\"/>\n" \
+ " </signal>\n" \
+ " </interface>\n"
+
+#define INTROSPECTION_BEGIN \
+ DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \
+ "<node>\n" \
+ BUS_MANAGER_INTERFACE \
+ BUS_PROPERTIES_INTERFACE \
+ BUS_PEER_INTERFACE \
+ BUS_INTROSPECTABLE_INTERFACE
+
+#define INTROSPECTION_END \
+ "</node>\n"
+
+#define INTERFACES_LIST \
+ BUS_GENERIC_INTERFACES_LIST \
+ "org.freedesktop.machine1.Manager\0"
+
+static bool valid_machine_name(const char *p) {
+ size_t l;
+
+ if (!filename_is_safe(p))
+ return false;
+
+ if (!ascii_is_valid(p))
+ return false;
+
+ l = strlen(p);
+
+ if (l < 1 || l> 64)
+ return false;
+
+ return true;
+}
+
+static int bus_manager_create_machine(Manager *manager, DBusMessage *message) {
+
+ const char *name, *service, *class, *slice, *root_directory;
+ _cleanup_free_ char *p = NULL;
+ DBusMessageIter iter, sub;
+ MachineClass c;
+ uint32_t leader;
+ sd_id128_t id;
+ Machine *m;
+ int n, r;
+ void *v;
+
+ assert(manager);
+ assert(message);
+
+ if (!dbus_message_iter_init(message, &iter) ||
+ dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
+ return -EINVAL;
+
+ dbus_message_iter_get_basic(&iter, &name);
+
+ if (!valid_machine_name(name) ||
+ !dbus_message_iter_next(&iter) ||
+ dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
+ dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_BYTE)
+ return -EINVAL;
+
+ dbus_message_iter_recurse(&iter, &sub);
+ dbus_message_iter_get_fixed_array(&sub, &v, &n);
+
+ if (n == 0)
+ id = SD_ID128_NULL;
+ else if (n == 16)
+ memcpy(&id, v, n);
+ else
+ return -EINVAL;
+
+ if (!dbus_message_iter_next(&iter) ||
+ dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
+ return -EINVAL;
+
+ dbus_message_iter_get_basic(&iter, &service);
+
+ if (!dbus_message_iter_next(&iter) ||
+ dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
+ return -EINVAL;
+
+ dbus_message_iter_get_basic(&iter, &class);
+
+ if (isempty(class))
+ c = _MACHINE_CLASS_INVALID;
+ else {
+ c = machine_class_from_string(class);
+ if (c < 0)
+ return -EINVAL;
+ }
+
+ if (!dbus_message_iter_next(&iter) ||
+ dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_UINT32)
+ return -EINVAL;
+
+ dbus_message_iter_get_basic(&iter, &leader);
+ if (!dbus_message_iter_next(&iter) ||
+ dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
+ return -EINVAL;
+
+ dbus_message_iter_get_basic(&iter, &slice);
+ if (!(isempty(slice) || (unit_name_is_valid(slice, false) && endswith(slice, ".slice"))) ||
+ !dbus_message_iter_next(&iter) ||
+ dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
+ return -EINVAL;
+
+ dbus_message_iter_get_basic(&iter, &root_directory);
+
+ if (!(isempty(root_directory) || path_is_absolute(root_directory)))
+ return -EINVAL;
+
+ if (hashmap_get(manager->machines, name))
+ return -EEXIST;
+
+ if (leader <= 0) {
+ leader = bus_get_unix_process_id(manager->bus, dbus_message_get_sender(message), NULL);
+ if (leader == 0)
+ return -EINVAL;
+ }
+
+ r = manager_add_machine(manager, name, &m);
+ if (r < 0)
+ goto fail;
+
+ m->leader = leader;
+ m->class = c;
+ m->id = id;
+
+ if (!isempty(service)) {
+ m->service = strdup(service);
+ if (!m->service) {
+ r = -ENOMEM;
+ goto fail;
+ }
+ }
+
+ if (!isempty(root_directory)) {
+ m->root_directory = strdup(root_directory);
+ if (!m->root_directory) {
+ r = -ENOMEM;
+ goto fail;
+ }
+ }
+
+ r = machine_start(m);
+ if (r < 0)
+ goto fail;
+
+ m->create_message = dbus_message_ref(message);
+
+ return 0;
+
+fail:
+ if (m)
+ machine_add_to_gc_queue(m);
+
+ return r;
+}
+
+static DBusHandlerResult manager_message_handler(
+ DBusConnection *connection,
+ DBusMessage *message,
+ void *userdata) {
+
+ Manager *m = userdata;
+
+ DBusError error;
+ _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
+ int r;
+
+ assert(connection);
+ assert(message);
+ assert(m);
+
+ dbus_error_init(&error);
+
+ if (dbus_message_is_method_call(message, "org.freedesktop.machine1.Manager", "GetMachine")) {
+ Machine *machine;
+ const char *name;
+ char *p;
+ bool b;
+
+ if (!dbus_message_get_args(
+ message,
+ &error,
+ DBUS_TYPE_STRING, &name,
+ DBUS_TYPE_INVALID))
+ return bus_send_error_reply(connection, message, &error, -EINVAL);
+
+ machine = hashmap_get(m->machines, name);
+ if (!machine)
+ return bus_send_error_reply(connection, message, &error, -ENOENT);
+
+ reply = dbus_message_new_method_return(message);
+ if (!reply)
+ goto oom;
+
+ p = machine_bus_path(machine);
+ if (!p)
+ goto oom;
+
+ b = dbus_message_append_args(
+ reply,
+ DBUS_TYPE_OBJECT_PATH, &p,
+ DBUS_TYPE_INVALID);
+ free(p);
+
+ if (!b)
+ goto oom;
+
+ } else if (dbus_message_is_method_call(message, "org.freedesktop.machine1.Manager", "GetMachineByPID")) {
+ uint32_t pid;
+ char *p;
+ Machine *machine;
+ bool b;
+
+ if (!dbus_message_get_args(
+ message,
+ &error,
+ DBUS_TYPE_UINT32, &pid,
+ DBUS_TYPE_INVALID))
+ return bus_send_error_reply(connection, message, &error, -EINVAL);
+
+ r = manager_get_machine_by_pid(m, pid, &machine);
+ if (r <= 0)
+ return bus_send_error_reply(connection, message, NULL, r < 0 ? r : -ENOENT);
+
+ reply = dbus_message_new_method_return(message);
+ if (!reply)
+ goto oom;
+
+ p = machine_bus_path(machine);
+ if (!p)
+ goto oom;
+
+ b = dbus_message_append_args(
+ reply,
+ DBUS_TYPE_OBJECT_PATH, &p,
+ DBUS_TYPE_INVALID);
+ free(p);
+
+ if (!b)
+ goto oom;
+
+ } else if (dbus_message_is_method_call(message, "org.freedesktop.machine1.Manager", "ListMachines")) {
+ Machine *machine;
+ Iterator i;
+ DBusMessageIter iter, sub;
+
+ reply = dbus_message_new_method_return(message);
+ if (!reply)
+ goto oom;
+
+ dbus_message_iter_init_append(reply, &iter);
+
+ if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(ssso)", &sub))
+ goto oom;
+
+ HASHMAP_FOREACH(machine, m->machines, i) {
+ _cleanup_free_ char *p = NULL;
+ DBusMessageIter sub2;
+ const char *class;
+
+ if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
+ goto oom;
+
+ p = machine_bus_path(machine);
+ if (!p)
+ goto oom;
+
+ class = strempty(machine_class_to_string(machine->class));
+
+ if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &machine->name) ||
+ !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &class) ||
+ !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &machine->service) ||
+ !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &p)) {
+ free(p);
+ goto oom;
+ }
+
+ if (!dbus_message_iter_close_container(&sub, &sub2))
+ goto oom;
+ }
+
+ if (!dbus_message_iter_close_container(&iter, &sub))
+ goto oom;
+
+ } else if (dbus_message_is_method_call(message, "org.freedesktop.machine1.Manager", "CreateMachine")) {
+
+ r = bus_manager_create_machine(m, message);
+ if (r < 0)
+ return bus_send_error_reply(connection, message, NULL, r);
+
+ } else if (dbus_message_is_method_call(message, "org.freedesktop.machine1.Manager", "KillMachine")) {
+ const char *swho;
+ int32_t signo;
+ KillWho who;
+ const char *name;
+ Machine *machine;
+
+ if (!dbus_message_get_args(
+ message,
+ &error,
+ DBUS_TYPE_STRING, &name,
+ DBUS_TYPE_STRING, &swho,
+ DBUS_TYPE_INT32, &signo,
+ DBUS_TYPE_INVALID))
+ return bus_send_error_reply(connection, message, &error, -EINVAL);
+
+ if (isempty(swho))
+ who = KILL_ALL;
+ else {
+ who = kill_who_from_string(swho);
+ if (who < 0)
+ return bus_send_error_reply(connection, message, &error, -EINVAL);
+ }
+
+ if (signo <= 0 || signo >= _NSIG)
+ return bus_send_error_reply(connection, message, &error, -EINVAL);
+
+ machine = hashmap_get(m->machines, name);
+ if (!machine)
+ return bus_send_error_reply(connection, message, &error, -ENOENT);
+
+ r = machine_kill(machine, who, signo);
+ if (r < 0)
+ return bus_send_error_reply(connection, message, NULL, r);
+
+ reply = dbus_message_new_method_return(message);
+ if (!reply)
+ goto oom;
+
+ } else if (dbus_message_is_method_call(message, "org.freedesktop.machine1.Manager", "TerminateMachine")) {
+ const char *name;
+ Machine *machine;
+
+ if (!dbus_message_get_args(
+ message,
+ &error,
+ DBUS_TYPE_STRING, &name,
+ DBUS_TYPE_INVALID))
+ return bus_send_error_reply(connection, message, &error, -EINVAL);
+
+ machine = hashmap_get(m->machines, name);
+ if (!machine)
+ return bus_send_error_reply(connection, message, &error, -ENOENT);
+
+ r = machine_stop(machine);
+ if (r < 0)
+ return bus_send_error_reply(connection, message, NULL, r);
+
+ reply = dbus_message_new_method_return(message);
+ if (!reply)
+ goto oom;
+
+ } else if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) {
+ char *introspection = NULL;
+ FILE *f;
+ Iterator i;
+ Machine *machine;
+ size_t size;
+ char *p;
+
+ reply = dbus_message_new_method_return(message);
+ if (!reply)
+ goto oom;
+
+ /* We roll our own introspection code here, instead of
+ * relying on bus_default_message_handler() because we
+ * need to generate our introspection string
+ * dynamically. */
+
+ f = open_memstream(&introspection, &size);
+ if (!f)
+ goto oom;
+
+ fputs(INTROSPECTION_BEGIN, f);
+
+ HASHMAP_FOREACH(machine, m->machines, i) {
+ p = bus_path_escape(machine->name);
+
+ if (p) {
+ fprintf(f, "<node name=\"machine/%s\"/>", p);
+ free(p);
+ }
+ }
+
+ fputs(INTROSPECTION_END, f);
+
+ if (ferror(f)) {
+ fclose(f);
+ free(introspection);
+ goto oom;
+ }
+
+ fclose(f);
+
+ if (!introspection)
+ goto oom;
+
+ if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &introspection, DBUS_TYPE_INVALID)) {
+ free(introspection);
+ goto oom;
+ }
+
+ free(introspection);
+ } else
+ return bus_default_message_handler(connection, message, NULL, INTERFACES_LIST, NULL);
+
+ if (reply) {
+ if (!bus_maybe_send_reply(connection, message, reply))
+ goto oom;
+ }
+
+ return DBUS_HANDLER_RESULT_HANDLED;
+
+oom:
+ dbus_error_free(&error);
+
+ return DBUS_HANDLER_RESULT_NEED_MEMORY;
+}
+
+const DBusObjectPathVTable bus_manager_vtable = {
+ .message_function = manager_message_handler
+};
+
+DBusHandlerResult bus_message_filter(
+ DBusConnection *connection,
+ DBusMessage *message,
+ void *userdata) {
+
+ Manager *m = userdata;
+ DBusError error;
+
+ assert(m);
+ assert(connection);
+ assert(message);
+
+ dbus_error_init(&error);
+
+ log_debug("Got message: %s %s %s", strna(dbus_message_get_sender(message)), strna(dbus_message_get_interface(message)), strna(dbus_message_get_member(message)));
+
+ if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "JobRemoved")) {
+ const char *path, *result, *unit;
+ Machine *mm;
+ uint32_t id;
+
+ if (!dbus_message_get_args(message, &error,
+ DBUS_TYPE_UINT32, &id,
+ DBUS_TYPE_OBJECT_PATH, &path,
+ DBUS_TYPE_STRING, &unit,
+ DBUS_TYPE_STRING, &result,
+ DBUS_TYPE_INVALID)) {
+ log_error("Failed to parse JobRemoved message: %s", bus_error_message(&error));
+ goto finish;
+ }
+
+
+ mm = hashmap_get(m->machine_units, unit);
+ if (mm) {
+ if (streq_ptr(path, mm->scope_job)) {
+ free(mm->scope_job);
+ mm->scope_job = NULL;
+
+ if (mm->started) {
+ if (streq(result, "done"))
+ machine_send_create_reply(mm, NULL);
+ else {
+ dbus_set_error(&error, BUS_ERROR_JOB_FAILED, "Start job for unit %s failed with '%s'", unit, result);
+ machine_send_create_reply(mm, &error);
+ }
+ }
+ }
+
+ machine_add_to_gc_queue(mm);
+ }
+
+ } else if (dbus_message_is_signal(message, "org.freedesktop.DBus.Properties", "PropertiesChanged")) {
+
+ _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
+ _cleanup_free_ char *unit = NULL;
+ const char *path;
+
+ path = dbus_message_get_path(message);
+ if (!path)
+ goto finish;
+
+ unit_name_from_dbus_path(path, &unit);
+ if (unit) {
+ Machine *mm;
+
+ mm = hashmap_get(m->machine_units, unit);
+ if (mm)
+ machine_add_to_gc_queue(mm);
+ }
+ }
+
+finish:
+ dbus_error_free(&error);
+
+ return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
+}
+
+int manager_start_scope(
+ Manager *manager,
+ const char *scope,
+ pid_t pid,
+ const char *slice,
+ const char *description,
+ DBusError *error,
+ char **job) {
+
+ _cleanup_dbus_message_unref_ DBusMessage *m = NULL, *reply = NULL;
+ DBusMessageIter iter, sub, sub2, sub3, sub4;
+ const char *timeout_stop_property = "TimeoutStopUSec";
+ const char *pids_property = "PIDs";
+ uint64_t timeout = 500 * USEC_PER_MSEC;
+ const char *fail = "fail";
+ uint32_t u;
+
+ assert(manager);
+ assert(scope);
+ assert(pid > 1);
+
+ if (!slice)
+ slice = "";
+
+ m = dbus_message_new_method_call(
+ "org.freedesktop.systemd1",
+ "/org/freedesktop/systemd1",
+ "org.freedesktop.systemd1.Manager",
+ "StartTransientUnit");
+ if (!m)
+ return log_oom();
+
+ dbus_message_iter_init_append(m, &iter);
+
+ if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &scope) ||
+ !dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &fail) ||
+ !dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(sv)", &sub))
+ return log_oom();
+
+ if (!isempty(slice)) {
+ const char *slice_property = "Slice";
+
+ if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) ||
+ !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &slice_property) ||
+ !dbus_message_iter_open_container(&sub2, DBUS_TYPE_VARIANT, "s", &sub3) ||
+ !dbus_message_iter_append_basic(&sub3, DBUS_TYPE_STRING, &slice) ||
+ !dbus_message_iter_close_container(&sub2, &sub3) ||
+ !dbus_message_iter_close_container(&sub, &sub2))
+ return log_oom();
+ }
+
+ if (!isempty(description)) {
+ const char *description_property = "Description";
+
+ if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) ||
+ !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &description_property) ||
+ !dbus_message_iter_open_container(&sub2, DBUS_TYPE_VARIANT, "s", &sub3) ||
+ !dbus_message_iter_append_basic(&sub3, DBUS_TYPE_STRING, &description) ||
+ !dbus_message_iter_close_container(&sub2, &sub3) ||
+ !dbus_message_iter_close_container(&sub, &sub2))
+ return log_oom();
+ }
+
+ /* cgroup empty notification is not available in containers
+ * currently. To make this less problematic, let's shorten the
+ * stop timeout for sessions, so that we don't wait
+ * forever. */
+
+ if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) ||
+ !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &timeout_stop_property) ||
+ !dbus_message_iter_open_container(&sub2, DBUS_TYPE_VARIANT, "t", &sub3) ||
+ !dbus_message_iter_append_basic(&sub3, DBUS_TYPE_UINT64, &timeout) ||
+ !dbus_message_iter_close_container(&sub2, &sub3) ||
+ !dbus_message_iter_close_container(&sub, &sub2))
+ return log_oom();
+
+ u = pid;
+ if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) ||
+ !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &pids_property) ||
+ !dbus_message_iter_open_container(&sub2, DBUS_TYPE_VARIANT, "au", &sub3) ||
+ !dbus_message_iter_open_container(&sub3, DBUS_TYPE_ARRAY, "u", &sub4) ||
+ !dbus_message_iter_append_basic(&sub4, DBUS_TYPE_UINT32, &u) ||
+ !dbus_message_iter_close_container(&sub3, &sub4) ||
+ !dbus_message_iter_close_container(&sub2, &sub3) ||
+ !dbus_message_iter_close_container(&sub, &sub2) ||
+ !dbus_message_iter_close_container(&iter, &sub))
+ return log_oom();
+
+ reply = dbus_connection_send_with_reply_and_block(manager->bus, m, -1, error);
+ if (!reply)
+ return -EIO;
+
+ if (job) {
+ const char *j;
+ char *copy;
+
+ if (!dbus_message_get_args(reply, error, DBUS_TYPE_OBJECT_PATH, &j, DBUS_TYPE_INVALID))
+ return -EIO;
+
+ copy = strdup(j);
+ if (!copy)
+ return -ENOMEM;
+
+ *job = copy;
+ }
+
+ return 0;
+}
+
+int manager_stop_unit(Manager *manager, const char *unit, DBusError *error, char **job) {
+ _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
+ const char *fail = "fail";
+ int r;
+
+ assert(manager);
+ assert(unit);
+
+ r = bus_method_call_with_reply(
+ manager->bus,
+ "org.freedesktop.systemd1",
+ "/org/freedesktop/systemd1",
+ "org.freedesktop.systemd1.Manager",
+ "StopUnit",
+ &reply,
+ error,
+ DBUS_TYPE_STRING, &unit,
+ DBUS_TYPE_STRING, &fail,
+ DBUS_TYPE_INVALID);
+ if (r < 0) {
+ log_error("Failed to stop unit %s: %s", unit, bus_error(error, r));
+ return r;
+ }
+
+ if (job) {
+ const char *j;
+ char *copy;
+
+ if (!dbus_message_get_args(reply, error,
+ DBUS_TYPE_OBJECT_PATH, &j,
+ DBUS_TYPE_INVALID)) {
+ log_error("Failed to parse reply.");
+ return -EIO;
+ }
+
+ copy = strdup(j);
+ if (!copy)
+ return -ENOMEM;
+
+ *job = copy;
+ }
+
+ return 0;
+}
+
+int manager_kill_unit(Manager *manager, const char *unit, KillWho who, int signo, DBusError *error) {
+ _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
+ const char *w;
+ int r;
+
+ assert(manager);
+ assert(unit);
+
+ w = who == KILL_LEADER ? "process" : "cgroup";
+ assert_cc(sizeof(signo) == sizeof(int32_t));
+
+ r = bus_method_call_with_reply(
+ manager->bus,
+ "org.freedesktop.systemd1",
+ "/org/freedesktop/systemd1",
+ "org.freedesktop.systemd1.Manager",
+ "KillUnit",
+ &reply,
+ error,
+ DBUS_TYPE_STRING, &unit,
+ DBUS_TYPE_STRING, &w,
+ DBUS_TYPE_INT32, &signo,
+ DBUS_TYPE_INVALID);
+ if (r < 0) {
+ log_error("Failed to stop unit %s: %s", unit, bus_error(error, r));
+ return r;
+ }
+
+ return 0;
+}
+
+int manager_unit_is_active(Manager *manager, const char *unit) {
+
+ const char *interface = "org.freedesktop.systemd1.Unit";
+ const char *property = "ActiveState";
+ _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
+ _cleanup_free_ char *path = NULL;
+ DBusMessageIter iter, sub;
+ const char *state;
+ DBusError error;
+ int r;
+
+ assert(manager);
+ assert(unit);
+
+ dbus_error_init(&error);
+
+ path = unit_dbus_path_from_name(unit);
+ if (!path)
+ return -ENOMEM;
+
+ r = bus_method_call_with_reply(
+ manager->bus,
+ "org.freedesktop.systemd1",
+ path,
+ "org.freedesktop.DBus.Properties",
+ "Get",
+ &reply,
+ &error,
+ DBUS_TYPE_STRING, &interface,
+ DBUS_TYPE_STRING, &property,
+ DBUS_TYPE_INVALID);
+
+ if (r < 0) {
+ log_error("Failed to query ActiveState: %s", bus_error(&error, r));
+ dbus_error_free(&error);
+ return r;
+ }
+
+ if (!dbus_message_iter_init(reply, &iter) ||
+ dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
+ log_error("Failed to parse reply.");
+ return -EINVAL;
+ }
+
+ dbus_message_iter_recurse(&iter, &sub);
+ if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
+ log_error("Failed to parse reply.");
+ return -EINVAL;
+ }
+
+ dbus_message_iter_get_basic(&sub, &state);
+
+ return !streq(state, "inactive") && !streq(state, "failed");
+}