#include <errno.h>

#include "dbus.h"

#include "log.h"

#include "dbus-unit.h"

#include "bus-errors.h"

#include "dbus-common.h"

#include "selinux-access.h"

#include "cgroup-util.h"

#include "strv.h"

#include "path-util.h"

#include "fileio.h"

const char bus_unit_interface[] = BUS_UNIT_INTERFACE;

#define INVALIDATING_PROPERTIES \

"LoadState\0" \

"ActiveState\0" \

"SubState\0" \

"InactiveExitTimestamp\0" \

"ActiveEnterTimestamp\0" \

"ActiveExitTimestamp\0" \

"InactiveEnterTimestamp\0" \

"Job\0" \

"NeedDaemonReload\0"

static int bus_unit_append_names(DBusMessageIter *i, const char *property, void *data) {

char *t;

Iterator j;

DBusMessageIter sub;

Unit *u = data;

if (!dbus_message_iter_open_container(i, DBUS_TYPE_ARRAY, "s", &sub))

return -ENOMEM;

SET_FOREACH(t, u->names, j)

if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &t))

return -ENOMEM;

if (!dbus_message_iter_close_container(i, &sub))

return -ENOMEM;

return 0;

}

static int bus_unit_append_following(DBusMessageIter *i, const char *property, void *data) {

Unit *u = data, *f;

const char *d;

assert(i);

assert(property);

assert(u);

f = unit_following(u);

d = f ? f->id : "";

if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &d))

return -ENOMEM;

return 0;

}

static int bus_unit_append_slice(DBusMessageIter *i, const char *property, void *data) {

Unit *u = data;

const char *d;

assert(i);

assert(property);

assert(u);

d = strempty(unit_slice_name(u));

if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &d))

return -ENOMEM;

return 0;

}

static int bus_unit_append_dependencies(DBusMessageIter *i, const char *property, void *data) {

Unit *u;

Iterator j;

DBusMessageIter sub;

Set *s = data;

if (!dbus_message_iter_open_container(i, DBUS_TYPE_ARRAY, "s", &sub))

return -ENOMEM;

SET_FOREACH(u, s, j)

if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &u->id))

return -ENOMEM;

if (!dbus_message_iter_close_container(i, &sub))

return -ENOMEM;

return 0;

}

static int bus_unit_append_description(DBusMessageIter *i, const char *property, void *data) {

Unit *u = data;

const char *d;

assert(i);

assert(property);

assert(u);

d = unit_description(u);

if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &d))

return -ENOMEM;

return 0;

}

static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_unit_append_load_state, unit_load_state, UnitLoadState);

static int bus_unit_append_active_state(DBusMessageIter *i, const char *property, void *data) {

Unit *u = data;

const char *state;

assert(i);

assert(property);

assert(u);

state = unit_active_state_to_string(unit_active_state(u));

if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &state))

return -ENOMEM;

return 0;

}

static int bus_unit_append_sub_state(DBusMessageIter *i, const char *property, void *data) {

Unit *u = data;

const char *state;

assert(i);

assert(property);

assert(u);

state = unit_sub_state_to_string(u);

if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &state))

return -ENOMEM;

return 0;

}

static int bus_unit_append_file_state(DBusMessageIter *i, const char *property, void *data) {

Unit *u = data;

const char *state;

assert(i);

assert(property);

assert(u);

state = strempty(unit_file_state_to_string(unit_get_unit_file_state(u)));

if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &state))

return -ENOMEM;

return 0;

}

static int bus_unit_append_can_start(DBusMessageIter *i, const char *property, void *data) {

Unit *u = data;

dbus_bool_t b;

assert(i);

assert(property);

assert(u);

b = unit_can_start(u) &&

!u->refuse_manual_start;

if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b))

return -ENOMEM;

return 0;

}

static int bus_unit_append_can_stop(DBusMessageIter *i, const char *property, void *data) {

Unit *u = data;

dbus_bool_t b;

assert(i);

assert(property);

assert(u);

/* On the lower levels we assume that every unit we can start

b = unit_can_start(u) &&

!u->refuse_manual_stop;

if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b))

return -ENOMEM;

return 0;

}

static int bus_unit_append_can_reload(DBusMessageIter *i, const char *property, void *data) {

Unit *u = data;

dbus_bool_t b;

assert(i);

assert(property);

assert(u);

b = unit_can_reload(u);

if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b))

return -ENOMEM;

return 0;

}

static int bus_unit_append_can_isolate(DBusMessageIter *i, const char *property, void *data) {

Unit *u = data;

dbus_bool_t b;

assert(i);

assert(property);

assert(u);

b = unit_can_isolate(u) &&

!u->refuse_manual_start;

if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b))

return -ENOMEM;

return 0;

}

static int bus_unit_append_job(DBusMessageIter *i, const char *property, void *data) {

Unit *u = data;

DBusMessageIter sub;

_cleanup_free_ char *p = NULL;

assert(i);

assert(property);

assert(u);

if (!dbus_message_iter_open_container(i, DBUS_TYPE_STRUCT, NULL, &sub))

return -ENOMEM;

if (u->job) {

p = job_dbus_path(u->job);

if (!p)

return -ENOMEM;

if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_UINT32, &u->job->id) ||

!dbus_message_iter_append_basic(&sub, DBUS_TYPE_OBJECT_PATH, &p))

return -ENOMEM;

} else {

uint32_t id = 0;

/* No job, so let's fill in some placeholder

p = unit_dbus_path(u);

if (!p)

return -ENOMEM;

if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_UINT32, &id) ||

!dbus_message_iter_append_basic(&sub, DBUS_TYPE_OBJECT_PATH, &p))

return -ENOMEM;

}

if (!dbus_message_iter_close_container(i, &sub))

return -ENOMEM;

return 0;

}

static int bus_unit_append_need_daemon_reload(DBusMessageIter *i, const char *property, void *data) {

Unit *u = data;

dbus_bool_t b;

assert(i);

assert(property);

assert(u);

b = unit_need_daemon_reload(u);

if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b))

return -ENOMEM;

return 0;

}

static int bus_property_append_condition(DBusMessageIter *i, const char *property, void *data) {

Condition **cp = data;

Condition *c;

const char *name, *param;

dbus_bool_t trigger, negate;

dbus_int32_t state;

DBusMessageIter sub;

assert(i);

assert(property);

assert(cp);

c = *cp;

assert(c);

name = condition_type_to_string(c->type);

param = c->parameter;

trigger = c->trigger;

negate = c->negate;

state = c->state;

if (!dbus_message_iter_open_container(i, DBUS_TYPE_STRUCT, NULL, &sub) ||

!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &name) ||

!dbus_message_iter_append_basic(&sub, DBUS_TYPE_BOOLEAN, &trigger) ||

!dbus_message_iter_append_basic(&sub, DBUS_TYPE_BOOLEAN, &negate) ||

!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &param) ||

!dbus_message_iter_append_basic(&sub, DBUS_TYPE_INT32, &state) ||

!dbus_message_iter_close_container(i, &sub))

return -ENOMEM;

return 0;

}

static int bus_property_append_condition_list(DBusMessageIter *i, const char *property, void *data) {

Condition **first = data, *c;

DBusMessageIter sub;

assert(i);

assert(data);

if (!dbus_message_iter_open_container(i, DBUS_TYPE_ARRAY, "(sbbsi)", &sub))

return -ENOMEM;

LIST_FOREACH(conditions, c, *first)

bus_property_append_condition(&sub, property, &c);

if (!dbus_message_iter_close_container(i, &sub))

return -ENOMEM;

return 0;

}

static int bus_unit_append_load_error(DBusMessageIter *i, const char *property, void *data) {

Unit *u = data;

const char *name, *message;

DBusMessageIter sub;

assert(i);

assert(property);

assert(u);

if (u->load_error != 0) {

name = bus_errno_to_dbus(u->load_error);

message = strempty(strerror(-u->load_error));

} else

name = message = "";

if (!dbus_message_iter_open_container(i, DBUS_TYPE_STRUCT, NULL, &sub) ||

!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &name) ||

!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &message) ||

!dbus_message_iter_close_container(i, &sub))

return -ENOMEM;

return 0;

}

static DBusHandlerResult bus_unit_message_dispatch(Unit *u, DBusConnection *connection, DBusMessage *message) {

_cleanup_dbus_message_unref_ DBusMessage *reply = NULL;

DBusError error;

JobType job_type = _JOB_TYPE_INVALID;

bool reload_if_possible = false;

int r;

dbus_error_init(&error);

if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "Start"))

job_type = JOB_START;

else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "Stop"))

job_type = JOB_STOP;

else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "Reload"))

job_type = JOB_RELOAD;

else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "Restart"))

job_type = JOB_RESTART;

else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "TryRestart"))

job_type = JOB_TRY_RESTART;

else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "ReloadOrRestart")) {

reload_if_possible = true;

job_type = JOB_RESTART;

} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "ReloadOrTryRestart")) {

reload_if_possible = true;

job_type = JOB_TRY_RESTART;

} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "Kill")) {

const char *swho;

int32_t signo;

KillWho who;

if (!dbus_message_get_args(

message,

&error,

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);

SELINUX_UNIT_ACCESS_CHECK(u, connection, message, "stop");

r = unit_kill(u, who, signo, &error);

if (r < 0)

return bus_send_error_reply(connection, message, &error, r);

reply = dbus_message_new_method_return(message);

if (!reply)

goto oom;

} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "ResetFailed")) {

SELINUX_UNIT_ACCESS_CHECK(u, connection, message, "reload");

unit_reset_failed(u);

reply = dbus_message_new_method_return(message);

if (!reply)

goto oom;

} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "SetProperties")) {

DBusMessageIter iter;

dbus_bool_t runtime;

if (!dbus_message_iter_init(message, &iter))

goto oom;

if (bus_iter_get_basic_and_next(&iter, DBUS_TYPE_BOOLEAN, &runtime, true) < 0)

return bus_send_error_reply(connection, message, NULL, -EINVAL);

SELINUX_UNIT_ACCESS_CHECK(u, connection, message, "start");

r = bus_unit_set_properties(u, &iter, runtime ? UNIT_RUNTIME : UNIT_PERSISTENT, true, &error);

if (r < 0)

return bus_send_error_reply(connection, message, &error, r);

reply = dbus_message_new_method_return(message);

if (!reply)

goto oom;

} else if (UNIT_VTABLE(u)->bus_message_handler)

return UNIT_VTABLE(u)->bus_message_handler(u, connection, message);

else

return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;

if (job_type != _JOB_TYPE_INVALID) {

const char *smode;

JobMode mode;

if (!dbus_message_get_args(

message,

&error,

DBUS_TYPE_STRING, &smode,

DBUS_TYPE_INVALID))

return bus_send_error_reply(connection, message, &error, -EINVAL);

mode = job_mode_from_string(smode);

if (mode < 0) {

dbus_set_error(&error, BUS_ERROR_INVALID_JOB_MODE, "Job mode %s is invalid.", smode);

return bus_send_error_reply(connection, message, &error, -EINVAL);

}

return bus_unit_queue_job(connection, message, u, job_type, mode, reload_if_possible);

}

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;

}

static DBusHandlerResult bus_unit_message_handler(DBusConnection *connection, DBusMessage *message, void *data) {

Manager *m = data;

Unit *u;

int r;

_cleanup_dbus_message_unref_ DBusMessage *reply = NULL;

DBusError error;

assert(connection);

assert(message);

assert(m);

dbus_error_init(&error);

if (streq(dbus_message_get_path(message), "/org/freedesktop/systemd1/unit")) {

/* Be nice to gdbus and return introspection data for our mid-level paths */

SELINUX_ACCESS_CHECK(connection, message, "status");

if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) {

char *introspection = NULL;

FILE *f;

Iterator i;

const char *k;

size_t size;

reply = dbus_message_new_method_return(message);

if (!reply)

goto oom;

/* We roll our own introspection code here, instead of

f = open_memstream(&introspection, &size);

if (!f)

goto oom;

fputs(DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE

"<node>\n", f);

fputs(BUS_INTROSPECTABLE_INTERFACE, f);

fputs(BUS_PEER_INTERFACE, f);

HASHMAP_FOREACH_KEY(u, k, m->units, i) {

char *p;

if (k != u->id)

continue;

p = bus_path_escape(k);

if (!p) {

fclose(f);

free(introspection);

goto oom;

}

fprintf(f, "<node name=\"%s\"/>", p);

free(p);

}

fputs("</node>\n", 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);

if (!bus_maybe_send_reply(connection, message, reply))

goto oom;

return DBUS_HANDLER_RESULT_HANDLED;

}

return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;

}

r = manager_load_unit_from_dbus_path(m, dbus_message_get_path(message), &error, &u);

if (r == -ENOMEM)

goto oom;

if (r < 0)

return bus_send_error_reply(connection, message, &error, r);

return bus_unit_message_dispatch(u, connection, message);

oom:

dbus_error_free(&error);

return DBUS_HANDLER_RESULT_NEED_MEMORY;

}

const DBusObjectPathVTable bus_unit_vtable = {

.message_function = bus_unit_message_handler

};

void bus_unit_send_change_signal(Unit *u) {

_cleanup_dbus_message_unref_ DBusMessage *m = NULL;

_cleanup_free_ char *p = NULL;

int r;

assert(u);

if (u->in_dbus_queue) {

LIST_REMOVE(dbus_queue, u->manager->dbus_unit_queue, u);

u->in_dbus_queue = false;

}

if (!u->id)

return;

if (!bus_has_subscriber(u->manager)) {

u->sent_dbus_new_signal = true;

return;

}

p = unit_dbus_path(u);

if (!p) {

log_oom();

return;

}

if (u->sent_dbus_new_signal) {

/* Send a properties changed signal. First for the

if (UNIT_VTABLE(u)->bus_invalidating_properties) {

m = bus_properties_changed_new(p,

UNIT_VTABLE(u)->bus_interface,

UNIT_VTABLE(u)->bus_invalidating_properties);

if (!m) {

log_oom();

return;

}

r = bus_broadcast(u->manager, m);

if (r < 0) {

log_error("Failed to broadcast change message: %s", strerror(-r));

return;

}

dbus_message_unref(m);

}

m = bus_properties_changed_new(p, "org.freedesktop.systemd1.Unit",

INVALIDATING_PROPERTIES);

if (!m) {

log_oom();

return;

}

} else {

/* Send a new signal */

m = dbus_message_new_signal("/org/freedesktop/systemd1",

"org.freedesktop.systemd1.Manager",

"UnitNew");

if (!m) {

log_oom();

return;

}

if (!dbus_message_append_args(m,

DBUS_TYPE_STRING, &u->id,

DBUS_TYPE_OBJECT_PATH, &p,

DBUS_TYPE_INVALID)) {

log_oom();

return;

}

}

r = bus_broadcast(u->manager, m);

if (r < 0) {

log_error("Failed to broadcast UnitNew/PropertiesChanged message.");

return;

}

u->sent_dbus_new_signal = true;

}

void bus_unit_send_removed_signal(Unit *u) {

_cleanup_free_ char *p = NULL;

_cleanup_dbus_message_unref_ DBusMessage *m = NULL;

assert(u);

if (!bus_has_subscriber(u->manager))

return;

if (!u->sent_dbus_new_signal)

bus_unit_send_change_signal(u);

if (!u->id)

return;

p = unit_dbus_path(u);

if (!p)

goto oom;

m = dbus_message_new_signal("/org/freedesktop/systemd1",

"org.freedesktop.systemd1.Manager",

"UnitRemoved");

if (!m)

goto oom;

if (!dbus_message_append_args(m,

DBUS_TYPE_STRING, &u->id,

DBUS_TYPE_OBJECT_PATH, &p,

DBUS_TYPE_INVALID))

goto oom;

if (bus_broadcast(u->manager, m) < 0)

goto oom;

return;

oom:

log_oom();

}

DBusHandlerResult bus_unit_queue_job(

DBusConnection *connection,

DBusMessage *message,

Unit *u,

JobType type,

JobMode mode,

bool reload_if_possible) {

_cleanup_dbus_message_unref_ DBusMessage *reply = NULL;

_cleanup_free_ char *path = NULL;

Job *j;

JobBusClient *cl;

DBusError error;

int r;

assert(connection);

assert(message);

assert(u);

assert(type >= 0 && type < _JOB_TYPE_MAX);

assert(mode >= 0 && mode < _JOB_MODE_MAX);

dbus_error_init(&error);

if (reload_if_possible && unit_can_reload(u)) {

if (type == JOB_RESTART)

type = JOB_RELOAD_OR_START;

else if (type == JOB_TRY_RESTART)

type = JOB_RELOAD;

}

SELINUX_UNIT_ACCESS_CHECK(u, connection, message,

(type == JOB_START || type == JOB_RESTART || type == JOB_TRY_RESTART) ? "start" :

type == JOB_STOP ? "stop" : "reload");

if (type == JOB_STOP && (u->load_state == UNIT_NOT_FOUND || u->load_state == UNIT_ERROR) && unit_active_state(u) == UNIT_INACTIVE) {

dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s not loaded.", u->id);

return bus_send_error_reply(connection, message, &error, -EPERM);

}

if ((type == JOB_START && u->refuse_manual_start) ||

(type == JOB_STOP && u->refuse_manual_stop) ||

((type == JOB_RESTART || type == JOB_TRY_RESTART) && (u->refuse_manual_start || u->refuse_manual_stop))) {

dbus_set_error(&error, BUS_ERROR_ONLY_BY_DEPENDENCY,

"Operation refused, unit %s may be requested by dependency only.", u->id);

return bus_send_error_reply(connection, message, &error, -EPERM);

}

r = manager_add_job(u->manager, type, u, mode, true, &error, &j);

if (r < 0)

return bus_send_error_reply(connection, message, &error, r);

cl = job_bus_client_new(connection, bus_message_get_sender_with_fallback(message));

if (!cl)

goto oom;

LIST_PREPEND(client, j->bus_client_list, cl);

reply = dbus_message_new_method_return(message);

if (!reply)

goto oom;

path = job_dbus_path(j);

if (!path)

goto oom;

if (!dbus_message_append_args(

reply,

DBUS_TYPE_OBJECT_PATH, &path,

DBUS_TYPE_INVALID))

goto oom;

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;

}

static int bus_unit_set_transient_property(

Unit *u,

const char *name,

DBusMessageIter *i,

UnitSetPropertiesMode mode,

DBusError *error) {

int r;

assert(u);

assert(name);

assert(i);

if (streq(name, "Description")) {

if (dbus_message_iter_get_arg_type(i) != DBUS_TYPE_STRING)

return -EINVAL;

if (mode != UNIT_CHECK) {

const char *description;

dbus_message_iter_get_basic(i, &description);

r = unit_set_description(u, description);

if (r < 0)

return r;

unit_write_drop_in_format(u, mode, name, "[Unit]\nDescription=%s\n", description);

}

return 1;

} else if (streq(name, "Slice") && unit_get_cgroup_context(u)) {

const char *s;

if (dbus_message_iter_get_arg_type(i) != DBUS_TYPE_STRING)

return -EINVAL;

dbus_message_iter_get_basic(i, &s);

if (isempty(s)) {

if (mode != UNIT_CHECK) {

unit_ref_unset(&u->slice);

unit_remove_drop_in(u, mode, name);

}

} else {

Unit *slice;

r = manager_load_unit(u->manager, s, NULL, error, &slice);

if (r < 0)

return r;

if (slice->type != UNIT_SLICE)

return -EINVAL;

if (mode != UNIT_CHECK) {

unit_ref_set(&u->slice, slice);

unit_write_drop_in_private_format(u, mode, name, "Slice=%s\n", s);

}

}

return 1;

} else if (streq(name, "Requires") ||

streq(name, "RequiresOverridable") ||

streq(name, "Requisite") ||

streq(name, "RequisiteOverridable") ||

streq(name, "Wants") ||

streq(name, "BindsTo") ||

streq(name, "Conflicts") ||

streq(name, "Before") ||

streq(name, "After") ||

streq(name, "OnFailure") ||

streq(name, "PropagatesReloadTo") ||

streq(name, "ReloadPropagatedFrom") ||

streq(name, "PartOf")) {

UnitDependency d;

DBusMessageIter sub;

d = unit_dependency_from_string(name);

if (d < 0)

return -EINVAL;

if (dbus_message_iter_get_arg_type(i) != DBUS_TYPE_ARRAY ||

dbus_message_iter_get_element_type(i) != DBUS_TYPE_STRING)

return -EINVAL;

dbus_message_iter_recurse(i, &sub);

while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING) {

const char *other;

dbus_message_iter_get_basic(&sub, &other);

if (!unit_name_is_valid(other, false))

return -EINVAL;

if (mode != UNIT_CHECK) {

_cleanup_free_ char *label = NULL;

r = unit_add_dependency_by_name(u, d, other, NULL, true);

if (r < 0)

return r;

label = strjoin(name, "-", other, NULL);

if (!label)

return -ENOMEM;

unit_write_drop_in_format(u, mode, label, "[Unit]\n%s=%s\n", name, other);

}

dbus_message_iter_next(&sub);

}

return 1;

}

return 0;

}

int bus_unit_set_properties(

Unit *u,

DBusMessageIter *iter,

UnitSetPropertiesMode mode,

bool commit,

DBusError *error) {

bool for_real = false;

DBusMessageIter sub;

unsigned n = 0;

int r;

assert(u);

assert(iter);

if (u->transient)

mode &= UNIT_RUNTIME;

/* We iterate through the array twice. First run we just check

if (dbus_message_iter_get_arg_type(iter) != DBUS_TYPE_ARRAY ||

dbus_message_iter_get_element_type(iter) != DBUS_TYPE_STRUCT)

return -EINVAL;

dbus_message_iter_recurse(iter, &sub);

for (;;) {

DBusMessageIter sub2, sub3;

const char *name;

if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_INVALID) {

if (for_real || mode == UNIT_CHECK)

break;

/* Reached EOF. Let's try again, and this time for realz... */

dbus_message_iter_recurse(iter, &sub);

for_real = true;

continue;

}

if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT)

return -EINVAL;

dbus_message_iter_recurse(&sub, &sub2);

if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0 ||

dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT)

return -EINVAL;

if (!UNIT_VTABLE(u)->bus_set_property) {

dbus_set_error(error, DBUS_ERROR_PROPERTY_READ_ONLY, "Objects of this type do not support setting properties.");

return -ENOENT;

}

dbus_message_iter_recurse(&sub2, &sub3);

r = UNIT_VTABLE(u)->bus_set_property(u, name, &sub3, for_real ? mode : UNIT_CHECK, error);

if (r == 0 && u->transient && u->load_state == UNIT_STUB)

r = bus_unit_set_transient_property(u, name, &sub3, for_real ? mode : UNIT_CHECK, error);

if (r < 0)

return r;

if (r == 0) {

dbus_set_error(error, DBUS_ERROR_PROPERTY_READ_ONLY, "Cannot set property %s, or unknown property.", name);

return -ENOENT;

}

dbus_message_iter_next(&sub);

n += for_real;

}

if (commit && n > 0 && UNIT_VTABLE(u)->bus_commit_properties)

UNIT_VTABLE(u)->bus_commit_properties(u);

return n;

}

const BusProperty bus_unit_properties[] = {

{ "Id", bus_property_append_string, "s", offsetof(Unit, id), true },

{ "Names", bus_unit_append_names, "as", 0 },

{ "Following", bus_unit_append_following, "s", 0 },

{ "Requires", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_REQUIRES]), true },

{ "RequiresOverridable", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_REQUIRES_OVERRIDABLE]), true },

{ "Requisite", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_REQUISITE]), true },

{ "RequisiteOverridable", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_REQUISITE_OVERRIDABLE]), true },

{ "Wants", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_WANTS]), true },

{ "BindsTo", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_BINDS_TO]), true },

{ "PartOf", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_PART_OF]), true },

{ "RequiredBy", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_REQUIRED_BY]), true },

{ "RequiredByOverridable", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_REQUIRED_BY_OVERRIDABLE]), true },

{ "WantedBy", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_WANTED_BY]), true },

{ "BoundBy", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_BOUND_BY]), true },

{ "ConsistsOf", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_CONSISTS_OF]), true },

{ "Conflicts", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_CONFLICTS]), true },

{ "ConflictedBy", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_CONFLICTED_BY]), true },

{ "Before", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_BEFORE]), true },

{ "After", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_AFTER]), true },

{ "OnFailure", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_ON_FAILURE]), true },

{ "Triggers", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_TRIGGERS]), true },

{ "TriggeredBy", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_TRIGGERED_BY]), true },

{ "PropagatesReloadTo", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_PROPAGATES_RELOAD_TO]), true },

{ "ReloadPropagatedFrom", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_RELOAD_PROPAGATED_FROM]), true },

{ "RequiresMountsFor", bus_property_append_strv, "as", offsetof(Unit, requires_mounts_for), true },

{ "Documentation", bus_property_append_strv, "as", offsetof(Unit, documentation), true },

{ "Description", bus_unit_append_description, "s", 0 },

{ "LoadState", bus_unit_append_load_state, "s", offsetof(Unit, load_state) },

{ "ActiveState", bus_unit_append_active_state, "s", 0 },

{ "SubState", bus_unit_append_sub_state, "s", 0 },

{ "FragmentPath", bus_property_append_string, "s", offsetof(Unit, fragment_path), true },

{ "SourcePath", bus_property_append_string, "s", offsetof(Unit, source_path), true },

{ "DropInPaths", bus_property_append_strv, "as", offsetof(Unit, dropin_paths), true },

{ "UnitFileState", bus_unit_append_file_state, "s", 0 },

{ "InactiveExitTimestamp", bus_property_append_usec, "t", offsetof(Unit, inactive_exit_timestamp.realtime) },

{ "InactiveExitTimestampMonotonic", bus_property_append_usec, "t", offsetof(Unit, inactive_exit_timestamp.monotonic) },

{ "ActiveEnterTimestamp", bus_property_append_usec, "t", offsetof(Unit, active_enter_timestamp.realtime) },

{ "ActiveEnterTimestampMonotonic", bus_property_append_usec, "t", offsetof(Unit, active_enter_timestamp.monotonic) },

{ "ActiveExitTimestamp", bus_property_append_usec, "t", offsetof(Unit, active_exit_timestamp.realtime) },

{ "ActiveExitTimestampMonotonic", bus_property_append_usec, "t", offsetof(Unit, active_exit_timestamp.monotonic) },

{ "InactiveEnterTimestamp", bus_property_append_usec, "t", offsetof(Unit, inactive_enter_timestamp.realtime) },

{ "InactiveEnterTimestampMonotonic", bus_property_append_usec, "t", offsetof(Unit, inactive_enter_timestamp.monotonic) },

{ "CanStart", bus_unit_append_can_start, "b", 0 },

{ "CanStop", bus_unit_append_can_stop, "b", 0 },

{ "CanReload", bus_unit_append_can_reload, "b", 0 },

{ "CanIsolate", bus_unit_append_can_isolate, "b", 0 },

{ "Job", bus_unit_append_job, "(uo)", 0 },

{ "StopWhenUnneeded", bus_property_append_bool, "b", offsetof(Unit, stop_when_unneeded) },

{ "RefuseManualStart", bus_property_append_bool, "b", offsetof(Unit, refuse_manual_start) },

{ "RefuseManualStop", bus_property_append_bool, "b", offsetof(Unit, refuse_manual_stop) },

{ "AllowIsolate", bus_property_append_bool, "b", offsetof(Unit, allow_isolate) },

{ "DefaultDependencies", bus_property_append_bool, "b", offsetof(Unit, default_dependencies) },

{ "OnFailureIsolate", bus_property_append_bool, "b", offsetof(Unit, on_failure_isolate) },

{ "IgnoreOnIsolate", bus_property_append_bool, "b", offsetof(Unit, ignore_on_isolate) },

{ "IgnoreOnSnapshot", bus_property_append_bool, "b", offsetof(Unit, ignore_on_snapshot) },

{ "NeedDaemonReload", bus_unit_append_need_daemon_reload, "b", 0 },

{ "JobTimeoutUSec", bus_property_append_usec, "t", offsetof(Unit, job_timeout) },

{ "ConditionTimestamp", bus_property_append_usec, "t", offsetof(Unit, condition_timestamp.realtime) },

{ "ConditionTimestampMonotonic", bus_property_append_usec, "t", offsetof(Unit, condition_timestamp.monotonic) },

{ "ConditionResult", bus_property_append_bool, "b", offsetof(Unit, condition_result) },

{ "Conditions", bus_property_append_condition_list, "a(sbbsi)", offsetof(Unit, conditions) },

{ "LoadError", bus_unit_append_load_error, "(ss)", 0 },

{ "Transient", bus_property_append_bool, "b", offsetof(Unit, transient) },

{}

};

const BusProperty bus_unit_cgroup_properties[] = {

{ "Slice", bus_unit_append_slice, "s", 0 },

{ "ControlGroup", bus_property_append_string, "s", offsetof(Unit, cgroup_path), true },

{}

};