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e2e9329411
systemd/src/dbus-manager.c
Michal Schmidt d200735e13 dbus: more efficient implementation of properties 
The way the various properties[] arrays are initialized is inefficient:
 - only the .data members change at runtime, yet the whole arrays of
   properties with all the fields are constructed on the stack one by
   one by the code.
 - there's duplication, eg. the properties of "org.freedesktop.systemd1.Unit"
   are repeated in several unit types.

Fix it by moving the information about properties into static const
sections. Instead of storing the .data directly in the property, store
a constant offset from a run-time base.
The small arrays of struct BusBoundProperties bind together the constant
information with the right runtime information (the base pointer).

On my system the code shrinks by 60 KB, data increases by 10 KB.
2012-01-16 13:34:42 +01:00

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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2010 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 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
General Public License for more details.
You should have received a copy of the GNU General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <errno.h>
#include <unistd.h>
#include "dbus.h"
#include "log.h"
#include "dbus-manager.h"
#include "strv.h"
#include "bus-errors.h"
#include "build.h"
#include "dbus-common.h"
#include "install.h"
#define BUS_MANAGER_INTERFACE_BEGIN \
" <interface name=\"org.freedesktop.systemd1.Manager\">\n"
#define BUS_MANAGER_INTERFACE_METHODS \
" <method name=\"GetUnit\">\n" \
" <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"GetUnitByPID\">\n" \
" <arg name=\"pid\" type=\"u\" direction=\"in\"/>\n" \
" <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"LoadUnit\">\n" \
" <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"StartUnit\">\n" \
" <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"job\" type=\"o\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"StartUnitReplace\">\n" \
" <arg name=\"old_unit\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"new_unit\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"job\" type=\"o\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"StopUnit\">\n" \
" <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"job\" type=\"o\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"ReloadUnit\">\n" \
" <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"job\" type=\"o\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"RestartUnit\">\n" \
" <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"job\" type=\"o\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"TryRestartUnit\">\n" \
" <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"job\" type=\"o\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"ReloadOrRestartUnit\">\n" \
" <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"job\" type=\"o\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"ReloadOrTryRestartUnit\">\n" \
" <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"job\" type=\"o\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"KillUnit\">\n" \
" <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"who\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"signal\" type=\"i\" direction=\"in\"/>\n" \
" </method>\n" \
" <method name=\"ResetFailedUnit\">\n" \
" <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
" </method>\n" \
" <method name=\"GetJob\">\n" \
" <arg name=\"id\" type=\"u\" direction=\"in\"/>\n" \
" <arg name=\"job\" type=\"o\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"ClearJobs\"/>\n" \
" <method name=\"ResetFailed\"/>\n" \
" <method name=\"ListUnits\">\n" \
" <arg name=\"units\" type=\"a(ssssssouso)\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"ListJobs\">\n" \
" <arg name=\"jobs\" type=\"a(usssoo)\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"Subscribe\"/>\n" \
" <method name=\"Unsubscribe\"/>\n" \
" <method name=\"Dump\"/>\n" \
" <method name=\"CreateSnapshot\">\n" \
" <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"cleanup\" type=\"b\" direction=\"in\"/>\n" \
" <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"Reload\"/>\n" \
" <method name=\"Reexecute\"/>\n" \
" <method name=\"Exit\"/>\n" \
" <method name=\"Reboot\"/>\n" \
" <method name=\"PowerOff\"/>\n" \
" <method name=\"Halt\"/>\n" \
" <method name=\"KExec\"/>\n" \
" <method name=\"SetEnvironment\">\n" \
" <arg name=\"names\" type=\"as\" direction=\"in\"/>\n" \
" </method>\n" \
" <method name=\"UnsetEnvironment\">\n" \
" <arg name=\"names\" type=\"as\" direction=\"in\"/>\n" \
" </method>\n" \
" <method name=\"UnsetAndSetEnvironment\">\n" \
" <arg name=\"unset\" type=\"as\" direction=\"in\"/>\n" \
" <arg name=\"set\" type=\"as\" direction=\"in\"/>\n" \
" </method>\n" \
" <method name=\"ListUnitFiles\">\n" \
" <arg name=\"changes\" type=\"a(ss)\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"GetUnitFileState\">\n" \
" <arg name=\"file\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"state\" type=\"s\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"EnableUnitFiles\">\n" \
" <arg name=\"files\" type=\"as\" direction=\"in\"/>\n" \
" <arg name=\"runtime\" type=\"b\" direction=\"in\"/>\n" \
" <arg name=\"force\" type=\"b\" direction=\"in\"/>\n" \
" <arg name=\"carries_install_info\" type=\"b\" direction=\"out\"/>\n" \
" <arg name=\"changes\" type=\"a(sss)\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"DisableUnitFiles\">\n" \
" <arg name=\"files\" type=\"as\" direction=\"in\"/>\n" \
" <arg name=\"runtime\" type=\"b\" direction=\"in\"/>\n" \
" <arg name=\"changes\" type=\"a(sss)\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"ReenableUnitFiles\">\n" \
" <arg name=\"files\" type=\"as\" direction=\"in\"/>\n" \
" <arg name=\"runtime\" type=\"b\" direction=\"in\"/>\n" \
" <arg name=\"force\" type=\"b\" direction=\"in\"/>\n" \
" <arg name=\"carries_install_info\" type=\"b\" direction=\"out\"/>\n" \
" <arg name=\"changes\" type=\"a(sss)\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"LinkUnitFiles\">\n" \
" <arg name=\"files\" type=\"as\" direction=\"in\"/>\n" \
" <arg name=\"runtime\" type=\"b\" direction=\"in\"/>\n" \
" <arg name=\"force\" type=\"b\" direction=\"in\"/>\n" \
" <arg name=\"changes\" type=\"a(sss)\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"PresetUnitFiles\">\n" \
" <arg name=\"files\" type=\"as\" direction=\"in\"/>\n" \
" <arg name=\"runtime\" type=\"b\" direction=\"in\"/>\n" \
" <arg name=\"force\" type=\"b\" direction=\"in\"/>\n" \
" <arg name=\"carries_install_info\" type=\"b\" direction=\"out\"/>\n" \
" <arg name=\"changes\" type=\"a(sss)\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"MaskUnitFiles\">\n" \
" <arg name=\"files\" type=\"as\" direction=\"in\"/>\n" \
" <arg name=\"runtime\" type=\"b\" direction=\"in\"/>\n" \
" <arg name=\"force\" type=\"b\" direction=\"in\"/>\n" \
" <arg name=\"changes\" type=\"a(sss)\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"UnmaskUnitFiles\">\n" \
" <arg name=\"files\" type=\"as\" direction=\"in\"/>\n" \
" <arg name=\"runtime\" type=\"b\" direction=\"in\"/>\n" \
" <arg name=\"changes\" type=\"a(sss)\" direction=\"out\"/>\n" \
" </method>\n"
#define BUS_MANAGER_INTERFACE_SIGNALS \
" <signal name=\"UnitNew\">\n" \
" <arg name=\"id\" type=\"s\"/>\n" \
" <arg name=\"unit\" type=\"o\"/>\n" \
" </signal>\n" \
" <signal name=\"UnitRemoved\">\n" \
" <arg name=\"id\" type=\"s\"/>\n" \
" <arg name=\"unit\" type=\"o\"/>\n" \
" </signal>\n" \
" <signal name=\"JobNew\">\n" \
" <arg name=\"id\" type=\"u\"/>\n" \
" <arg name=\"job\" type=\"o\"/>\n" \
" </signal>\n" \
" <signal name=\"JobRemoved\">\n" \
" <arg name=\"id\" type=\"u\"/>\n" \
" <arg name=\"job\" type=\"o\"/>\n" \
" <arg name=\"result\" type=\"s\"/>\n" \
" </signal>" \
" <signal name=\"StartupFinished\">\n" \
" <arg name=\"kernel\" type=\"t\"/>\n" \
" <arg name=\"initrd\" type=\"t\"/>\n" \
" <arg name=\"userspace\" type=\"t\"/>\n" \
" <arg name=\"total\" type=\"t\"/>\n" \
" </signal>" \
" <signal name=\"UnitFilesChanged\"/>\n"
#define BUS_MANAGER_INTERFACE_PROPERTIES_GENERAL \
" <property name=\"Version\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"Distribution\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"Features\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"Tainted\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"RunningAs\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"InitRDTimestamp\" type=\"t\" access=\"read\"/>\n" \
" <property name=\"InitRDTimestampMonotonic\" type=\"t\" access=\"read\"/>\n" \
" <property name=\"StartupTimestamp\" type=\"t\" access=\"read\"/>\n" \
" <property name=\"StartupTimestampMonotonic\" type=\"t\" access=\"read\"/>\n" \
" <property name=\"FinishTimestamp\" type=\"t\" access=\"read\"/>\n" \
" <property name=\"FinishTimestampMonotonic\" type=\"t\" access=\"read\"/>\n" \
" <property name=\"LogLevel\" type=\"s\" access=\"readwrite\"/>\n" \
" <property name=\"LogTarget\" type=\"s\" access=\"readwrite\"/>\n" \
" <property name=\"NNames\" type=\"u\" access=\"read\"/>\n" \
" <property name=\"NJobs\" type=\"u\" access=\"read\"/>\n" \
" <property name=\"NInstalledJobs\" type=\"u\" access=\"read\"/>\n" \
" <property name=\"NFailedJobs\" type=\"u\" access=\"read\"/>\n" \
" <property name=\"Progress\" type=\"d\" access=\"read\"/>\n" \
" <property name=\"Environment\" type=\"as\" access=\"read\"/>\n" \
" <property name=\"ConfirmSpawn\" type=\"b\" access=\"read\"/>\n" \
" <property name=\"ShowStatus\" type=\"b\" access=\"read\"/>\n" \
" <property name=\"UnitPath\" type=\"as\" access=\"read\"/>\n" \
" <property name=\"NotifySocket\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"ControlGroupHierarchy\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"MountAuto\" type=\"b\" access=\"read\"/>\n" \
" <property name=\"SwapAuto\" type=\"b\" access=\"read\"/>\n" \
" <property name=\"DefaultControllers\" type=\"as\" access=\"read\"/>\n" \
" <property name=\"DefaultStandardOutput\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"DefaultStandardError\" type=\"s\" access=\"read\"/>\n"
#ifdef HAVE_SYSV_COMPAT
#define BUS_MANAGER_INTERFACE_PROPERTIES_SYSV \
" <property name=\"SysVConsole\" type=\"b\" access=\"read\"/>\n" \
" <property name=\"SysVInitPath\" type=\"as\" access=\"read\"/>\n" \
" <property name=\"SysVRcndPath\" type=\"as\" access=\"read\"/>\n"
#else
#define BUS_MANAGER_INTERFACE_PROPERTIES_SYSV
#endif
#define BUS_MANAGER_INTERFACE_END \
" </interface>\n"
#define BUS_MANAGER_INTERFACE \
BUS_MANAGER_INTERFACE_BEGIN \
BUS_MANAGER_INTERFACE_METHODS \
BUS_MANAGER_INTERFACE_SIGNALS \
BUS_MANAGER_INTERFACE_PROPERTIES_GENERAL \
BUS_MANAGER_INTERFACE_PROPERTIES_SYSV \
BUS_MANAGER_INTERFACE_END
#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.systemd1.Manager\0"
const char bus_manager_interface[] _introspect_("Manager") = BUS_MANAGER_INTERFACE;
static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_manager_append_running_as, manager_running_as, ManagerRunningAs);
static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_manager_append_exec_output, exec_output, ExecOutput);
static int bus_manager_append_tainted(DBusMessageIter *i, const char *property, void *data) {
const char *t;
Manager *m = data;
char buf[LINE_MAX] = "", *e = buf, *p = NULL;
assert(i);
assert(property);
assert(m);
if (m->taint_usr)
e = stpcpy(e, "usr-separate-fs ");
if (readlink_malloc("/etc/mtab", &p) < 0)
e = stpcpy(e, "etc-mtab-not-symlink ");
else
free(p);
if (access("/proc/cgroups", F_OK) < 0)
stpcpy(e, "cgroups-missing ");
t = strstrip(buf);
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
return -ENOMEM;
return 0;
}
static int bus_manager_append_log_target(DBusMessageIter *i, const char *property, void *data) {
const char *t;
assert(i);
assert(property);
t = log_target_to_string(log_get_target());
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
return -ENOMEM;
return 0;
}
static int bus_manager_set_log_target(DBusMessageIter *i, const char *property) {
const char *t;
assert(i);
assert(property);
dbus_message_iter_get_basic(i, &t);
return log_set_target_from_string(t);
}
static int bus_manager_append_log_level(DBusMessageIter *i, const char *property, void *data) {
const char *t;
assert(i);
assert(property);
t = log_level_to_string(log_get_max_level());
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
return -ENOMEM;
return 0;
}
static int bus_manager_set_log_level(DBusMessageIter *i, const char *property) {
const char *t;
assert(i);
assert(property);
dbus_message_iter_get_basic(i, &t);
return log_set_max_level_from_string(t);
}
static int bus_manager_append_n_names(DBusMessageIter *i, const char *property, void *data) {
Manager *m = data;
uint32_t u;
assert(i);
assert(property);
assert(m);
u = hashmap_size(m->units);
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, &u))
return -ENOMEM;
return 0;
}
static int bus_manager_append_n_jobs(DBusMessageIter *i, const char *property, void *data) {
Manager *m = data;
uint32_t u;
assert(i);
assert(property);
assert(m);
u = hashmap_size(m->jobs);
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, &u))
return -ENOMEM;
return 0;
}
static int bus_manager_append_progress(DBusMessageIter *i, const char *property, void *data) {
double d;
Manager *m = data;
assert(i);
assert(property);
assert(m);
if (dual_timestamp_is_set(&m->finish_timestamp))
d = 1.0;
else
d = 1.0 - ((double) hashmap_size(m->jobs) / (double) m->n_installed_jobs);
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_DOUBLE, &d))
return -ENOMEM;
return 0;
}
static const char *message_get_sender_with_fallback(DBusMessage *m) {
const char *s;
assert(m);
if ((s = dbus_message_get_sender(m)))
return s;
/* When the message came in from a direct connection the
* message will have no sender. We fix that here. */
return ":no-sender";
}
static DBusMessage *message_from_file_changes(
DBusMessage *m,
UnitFileChange *changes,
unsigned n_changes,
int carries_install_info) {
DBusMessageIter iter, sub, sub2;
DBusMessage *reply;
unsigned i;
reply = dbus_message_new_method_return(m);
if (!reply)
return NULL;
dbus_message_iter_init_append(reply, &iter);
if (carries_install_info >= 0) {
dbus_bool_t b;
b = !!carries_install_info;
if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &b))
goto oom;
}
if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(sss)", &sub))
goto oom;
for (i = 0; i < n_changes; i++) {
const char *type, *path, *source;
type = unit_file_change_type_to_string(changes[i].type);
path = strempty(changes[i].path);
source = strempty(changes[i].source);
if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &type) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &path) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &source) ||
!dbus_message_iter_close_container(&sub, &sub2))
goto oom;
}
if (!dbus_message_iter_close_container(&iter, &sub))
goto oom;
return reply;
oom:
dbus_message_unref(reply);
return NULL;
}
static int bus_manager_send_unit_files_changed(Manager *m) {
DBusMessage *s;
int r;
s = dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "UnitFilesChanged");
if (!s)
return -ENOMEM;
r = bus_broadcast(m, s);
dbus_message_unref(s);
return r;
}
static const char systemd_property_string[] = PACKAGE_STRING "\0" DISTRIBUTION "\0" SYSTEMD_FEATURES;
static const BusProperty bus_systemd_properties[] = {
{ "Version", bus_property_append_string, "s", 0 },
{ "Distribution", bus_property_append_string, "s", sizeof(PACKAGE_STRING) },
{ "Features", bus_property_append_string, "s", sizeof(PACKAGE_STRING) + sizeof(DISTRIBUTION) },
{ NULL, }
};
static const BusProperty bus_manager_properties[] = {
{ "RunningAs", bus_manager_append_running_as, "s", offsetof(Manager, running_as) },
{ "Tainted", bus_manager_append_tainted, "s", 0 },
{ "InitRDTimestamp", bus_property_append_uint64, "t", offsetof(Manager, initrd_timestamp.realtime) },
{ "InitRDTimestampMonotonic", bus_property_append_uint64, "t", offsetof(Manager, initrd_timestamp.monotonic) },
{ "StartupTimestamp", bus_property_append_uint64, "t", offsetof(Manager, startup_timestamp.realtime) },
{ "StartupTimestampMonotonic", bus_property_append_uint64, "t", offsetof(Manager, startup_timestamp.monotonic) },
{ "FinishTimestamp", bus_property_append_uint64, "t", offsetof(Manager, finish_timestamp.realtime) },
{ "FinishTimestampMonotonic", bus_property_append_uint64, "t", offsetof(Manager, finish_timestamp.monotonic) },
{ "LogLevel", bus_manager_append_log_level, "s", 0, 0, bus_manager_set_log_level },
{ "LogTarget", bus_manager_append_log_target, "s", 0, 0, bus_manager_set_log_target },
{ "NNames", bus_manager_append_n_names, "u", 0 },
{ "NJobs", bus_manager_append_n_jobs, "u", 0 },
{ "NInstalledJobs",bus_property_append_uint32, "u", offsetof(Manager, n_installed_jobs) },
{ "NFailedJobs", bus_property_append_uint32, "u", offsetof(Manager, n_failed_jobs) },
{ "Progress", bus_manager_append_progress, "d", 0 },
{ "Environment", bus_property_append_strv, "as", offsetof(Manager, environment), true },
{ "ConfirmSpawn", bus_property_append_bool, "b", offsetof(Manager, confirm_spawn) },
{ "ShowStatus", bus_property_append_bool, "b", offsetof(Manager, show_status) },
{ "UnitPath", bus_property_append_strv, "as", offsetof(Manager, lookup_paths.unit_path), true },
{ "NotifySocket", bus_property_append_string, "s", offsetof(Manager, notify_socket), true },
{ "ControlGroupHierarchy", bus_property_append_string, "s", offsetof(Manager, cgroup_hierarchy), true },
{ "MountAuto", bus_property_append_bool, "b", offsetof(Manager, mount_auto) },
{ "SwapAuto", bus_property_append_bool, "b", offsetof(Manager, swap_auto) },
{ "DefaultControllers", bus_property_append_strv, "as", offsetof(Manager, default_controllers), true },
{ "DefaultStandardOutput", bus_manager_append_exec_output, "s", offsetof(Manager, default_std_output) },
{ "DefaultStandardError", bus_manager_append_exec_output, "s", offsetof(Manager, default_std_error) },
#ifdef HAVE_SYSV_COMPAT
{ "SysVConsole", bus_property_append_bool, "b", offsetof(Manager, sysv_console) },
{ "SysVInitPath", bus_property_append_strv, "as", offsetof(Manager, lookup_paths.sysvinit_path), true },
{ "SysVRcndPath", bus_property_append_strv, "as", offsetof(Manager, lookup_paths.sysvrcnd_path), true },
#endif
{ NULL, }
};
static DBusHandlerResult bus_manager_message_handler(DBusConnection *connection, DBusMessage *message, void *data) {
Manager *m = data;
int r;
DBusError error;
DBusMessage *reply = NULL;
char * path = NULL;
JobType job_type = _JOB_TYPE_INVALID;
bool reload_if_possible = false;
const char *member;
assert(connection);
assert(message);
assert(m);
dbus_error_init(&error);
member = dbus_message_get_member(message);
if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnit")) {
const char *name;
Unit *u;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_STRING, &name,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
if (!(u = manager_get_unit(m, name))) {
dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
return bus_send_error_reply(connection, message, &error, -ENOENT);
}
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
if (!(path = unit_dbus_path(u)))
goto oom;
if (!dbus_message_append_args(
reply,
DBUS_TYPE_OBJECT_PATH, &path,
DBUS_TYPE_INVALID))
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnitByPID")) {
Unit *u;
uint32_t pid;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_UINT32, &pid,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
if (!(u = cgroup_unit_by_pid(m, (pid_t) pid))) {
dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "No unit for PID %lu is loaded.", (unsigned long) pid);
return bus_send_error_reply(connection, message, &error, -ENOENT);
}
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
if (!(path = unit_dbus_path(u)))
goto oom;
if (!dbus_message_append_args(
reply,
DBUS_TYPE_OBJECT_PATH, &path,
DBUS_TYPE_INVALID))
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "LoadUnit")) {
const char *name;
Unit *u;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_STRING, &name,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
if ((r = manager_load_unit(m, name, NULL, &error, &u)) < 0)
return bus_send_error_reply(connection, message, &error, r);
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
if (!(path = unit_dbus_path(u)))
goto oom;
if (!dbus_message_append_args(
reply,
DBUS_TYPE_OBJECT_PATH, &path,
DBUS_TYPE_INVALID))
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnit"))
job_type = JOB_START;
else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnitReplace"))
job_type = JOB_START;
else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StopUnit"))
job_type = JOB_STOP;
else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadUnit"))
job_type = JOB_RELOAD;
else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "RestartUnit"))
job_type = JOB_RESTART;
else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "TryRestartUnit"))
job_type = JOB_TRY_RESTART;
else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadOrRestartUnit")) {
reload_if_possible = true;
job_type = JOB_RESTART;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReloadOrTryRestartUnit")) {
reload_if_possible = true;
job_type = JOB_TRY_RESTART;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "KillUnit")) {
const char *name, *swho, *smode;
int32_t signo;
Unit *u;
KillMode mode;
KillWho who;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_STRING, &name,
DBUS_TYPE_STRING, &swho,
DBUS_TYPE_STRING, &smode,
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 (isempty(smode))
mode = KILL_CONTROL_GROUP;
else {
mode = kill_mode_from_string(smode);
if (mode < 0)
return bus_send_error_reply(connection, message, &error, -EINVAL);
}
if (signo <= 0 || signo >= _NSIG)
return bus_send_error_reply(connection, message, &error, -EINVAL);
if (!(u = manager_get_unit(m, name))) {
dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
return bus_send_error_reply(connection, message, &error, -ENOENT);
}
if ((r = unit_kill(u, who, mode, signo, &error)) < 0)
return bus_send_error_reply(connection, message, &error, r);
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetJob")) {
uint32_t id;
Job *j;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_UINT32, &id,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
if (!(j = manager_get_job(m, id))) {
dbus_set_error(&error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
return bus_send_error_reply(connection, message, &error, -ENOENT);
}
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
if (!(path = job_dbus_path(j)))
goto oom;
if (!dbus_message_append_args(
reply,
DBUS_TYPE_OBJECT_PATH, &path,
DBUS_TYPE_INVALID))
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ClearJobs")) {
manager_clear_jobs(m);
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ResetFailed")) {
manager_reset_failed(m);
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ResetFailedUnit")) {
const char *name;
Unit *u;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_STRING, &name,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
if (!(u = manager_get_unit(m, name))) {
dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
return bus_send_error_reply(connection, message, &error, -ENOENT);
}
unit_reset_failed(u);
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListUnits")) {
DBusMessageIter iter, sub;
Iterator i;
Unit *u;
const char *k;
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
dbus_message_iter_init_append(reply, &iter);
if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(ssssssouso)", &sub))
goto oom;
HASHMAP_FOREACH_KEY(u, k, m->units, i) {
char *u_path, *j_path;
const char *description, *load_state, *active_state, *sub_state, *sjob_type, *following;
DBusMessageIter sub2;
uint32_t job_id;
Unit *f;
if (k != u->id)
continue;
if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
goto oom;
description = unit_description(u);
load_state = unit_load_state_to_string(u->load_state);
active_state = unit_active_state_to_string(unit_active_state(u));
sub_state = unit_sub_state_to_string(u);
f = unit_following(u);
following = f ? f->id : "";
if (!(u_path = unit_dbus_path(u)))
goto oom;
if (u->job) {
job_id = (uint32_t) u->job->id;
if (!(j_path = job_dbus_path(u->job))) {
free(u_path);
goto oom;
}
sjob_type = job_type_to_string(u->job->type);
} else {
job_id = 0;
j_path = u_path;
sjob_type = "";
}
if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &u->id) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &description) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &load_state) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &active_state) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &sub_state) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &following) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &job_id) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &sjob_type) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path)) {
free(u_path);
if (u->job)
free(j_path);
goto oom;
}
free(u_path);
if (u->job)
free(j_path);
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.systemd1.Manager", "ListJobs")) {
DBusMessageIter iter, sub;
Iterator i;
Job *j;
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
dbus_message_iter_init_append(reply, &iter);
if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(usssoo)", &sub))
goto oom;
HASHMAP_FOREACH(j, m->jobs, i) {
char *u_path, *j_path;
const char *state, *type;
uint32_t id;
DBusMessageIter sub2;
if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
goto oom;
id = (uint32_t) j->id;
state = job_state_to_string(j->state);
type = job_type_to_string(j->type);
if (!(j_path = job_dbus_path(j)))
goto oom;
if (!(u_path = unit_dbus_path(j->unit))) {
free(j_path);
goto oom;
}
if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &id) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &j->unit->id) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &type) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &state) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path)) {
free(j_path);
free(u_path);
goto oom;
}
free(j_path);
free(u_path);
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.systemd1.Manager", "Subscribe")) {
char *client;
Set *s;
if (!(s = BUS_CONNECTION_SUBSCRIBED(m, connection))) {
if (!(s = set_new(string_hash_func, string_compare_func)))
goto oom;
if (!(dbus_connection_set_data(connection, m->subscribed_data_slot, s, NULL))) {
set_free(s);
goto oom;
}
}
if (!(client = strdup(message_get_sender_with_fallback(message))))
goto oom;
if ((r = set_put(s, client)) < 0) {
free(client);
return bus_send_error_reply(connection, message, NULL, r);
}
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Unsubscribe")) {
char *client;
if (!(client = set_remove(BUS_CONNECTION_SUBSCRIBED(m, connection), (char*) message_get_sender_with_fallback(message)))) {
dbus_set_error(&error, BUS_ERROR_NOT_SUBSCRIBED, "Client is not subscribed.");
return bus_send_error_reply(connection, message, &error, -ENOENT);
}
free(client);
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Dump")) {
FILE *f;
char *dump = NULL;
size_t size;
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
if (!(f = open_memstream(&dump, &size)))
goto oom;
manager_dump_units(m, f, NULL);
manager_dump_jobs(m, f, NULL);
if (ferror(f)) {
fclose(f);
free(dump);
goto oom;
}
fclose(f);
if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &dump, DBUS_TYPE_INVALID)) {
free(dump);
goto oom;
}
free(dump);
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "CreateSnapshot")) {
const char *name;
dbus_bool_t cleanup;
Snapshot *s;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_STRING, &name,
DBUS_TYPE_BOOLEAN, &cleanup,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
if (name && name[0] == 0)
name = NULL;
if ((r = snapshot_create(m, name, cleanup, &error, &s)) < 0)
return bus_send_error_reply(connection, message, &error, r);
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
if (!(path = unit_dbus_path(UNIT(s))))
goto oom;
if (!dbus_message_append_args(
reply,
DBUS_TYPE_OBJECT_PATH, &path,
DBUS_TYPE_INVALID))
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) {
char *introspection = NULL;
FILE *f;
Iterator i;
Unit *u;
Job *j;
const char *k;
size_t size;
if (!(reply = dbus_message_new_method_return(message)))
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. */
if (!(f = open_memstream(&introspection, &size)))
goto oom;
fputs(INTROSPECTION_BEGIN, f);
HASHMAP_FOREACH_KEY(u, k, m->units, i) {
char *p;
if (k != u->id)
continue;
if (!(p = bus_path_escape(k))) {
fclose(f);
free(introspection);
goto oom;
}
fprintf(f, "<node name=\"unit/%s\"/>", p);
free(p);
}
HASHMAP_FOREACH(j, m->jobs, i)
fprintf(f, "<node name=\"job/%lu\"/>", (unsigned long) j->id);
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 if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reload")) {
assert(!m->queued_message);
/* Instead of sending the reply back right away, we
* just remember that we need to and then send it
* after the reload is finished. That way the caller
* knows when the reload finished. */
if (!(m->queued_message = dbus_message_new_method_return(message)))
goto oom;
m->queued_message_connection = connection;
m->exit_code = MANAGER_RELOAD;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reexecute")) {
/* We don't send a reply back here, the client should
* just wait for us disconnecting. */
m->exit_code = MANAGER_REEXECUTE;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Exit")) {
if (m->running_as == MANAGER_SYSTEM) {
dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Exit is only supported for user service managers.");
return bus_send_error_reply(connection, message, &error, -ENOTSUP);
}
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
m->exit_code = MANAGER_EXIT;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reboot")) {
if (m->running_as != MANAGER_SYSTEM) {
dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Reboot is only supported for system managers.");
return bus_send_error_reply(connection, message, &error, -ENOTSUP);
}
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
m->exit_code = MANAGER_REBOOT;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "PowerOff")) {
if (m->running_as != MANAGER_SYSTEM) {
dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Powering off is only supported for system managers.");
return bus_send_error_reply(connection, message, &error, -ENOTSUP);
}
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
m->exit_code = MANAGER_POWEROFF;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Halt")) {
if (m->running_as != MANAGER_SYSTEM) {
dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Halting is only supported for system managers.");
return bus_send_error_reply(connection, message, &error, -ENOTSUP);
}
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
m->exit_code = MANAGER_HALT;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "KExec")) {
if (m->running_as != MANAGER_SYSTEM) {
dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "kexec is only supported for system managers.");
return bus_send_error_reply(connection, message, &error, -ENOTSUP);
}
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
m->exit_code = MANAGER_KEXEC;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "SetEnvironment")) {
char **l = NULL, **e = NULL;
if ((r = bus_parse_strv(message, &l)) < 0) {
if (r == -ENOMEM)
goto oom;
return bus_send_error_reply(connection, message, NULL, r);
}
e = strv_env_merge(2, m->environment, l);
strv_free(l);
if (!e)
goto oom;
if (!(reply = dbus_message_new_method_return(message))) {
strv_free(e);
goto oom;
}
strv_free(m->environment);
m->environment = e;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "UnsetEnvironment")) {
char **l = NULL, **e = NULL;
if ((r = bus_parse_strv(message, &l)) < 0) {
if (r == -ENOMEM)
goto oom;
return bus_send_error_reply(connection, message, NULL, r);
}
e = strv_env_delete(m->environment, 1, l);
strv_free(l);
if (!e)
goto oom;
if (!(reply = dbus_message_new_method_return(message))) {
strv_free(e);
goto oom;
}
strv_free(m->environment);
m->environment = e;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "UnsetAndSetEnvironment")) {
char **l_set = NULL, **l_unset = NULL, **e = NULL, **f = NULL;
DBusMessageIter iter;
if (!dbus_message_iter_init(message, &iter))
goto oom;
r = bus_parse_strv_iter(&iter, &l_unset);
if (r < 0) {
if (r == -ENOMEM)
goto oom;
return bus_send_error_reply(connection, message, NULL, r);
}
if (!dbus_message_iter_next(&iter)) {
strv_free(l_unset);
return bus_send_error_reply(connection, message, NULL, -EINVAL);
}
r = bus_parse_strv_iter(&iter, &l_set);
if (r < 0) {
strv_free(l_unset);
if (r == -ENOMEM)
goto oom;
return bus_send_error_reply(connection, message, NULL, r);
}
e = strv_env_delete(m->environment, 1, l_unset);
strv_free(l_unset);
if (!e) {
strv_free(l_set);
goto oom;
}
f = strv_env_merge(2, e, l_set);
strv_free(l_set);
strv_free(e);
if (!f)
goto oom;
if (!(reply = dbus_message_new_method_return(message))) {
strv_free(f);
goto oom;
}
strv_free(m->environment);
m->environment = f;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListUnitFiles")) {
DBusMessageIter iter, sub, sub2;
Hashmap *h;
Iterator i;
UnitFileList *item;
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
h = hashmap_new(string_hash_func, string_compare_func);
if (!h)
goto oom;
r = unit_file_get_list(m->running_as == MANAGER_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER, NULL, h);
if (r < 0) {
unit_file_list_free(h);
dbus_message_unref(reply);
return bus_send_error_reply(connection, message, NULL, r);
}
dbus_message_iter_init_append(reply, &iter);
if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(ss)", &sub)) {
unit_file_list_free(h);
goto oom;
}
HASHMAP_FOREACH(item, h, i) {
const char *state;
state = unit_file_state_to_string(item->state);
assert(state);
if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &item->path) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &state) ||
!dbus_message_iter_close_container(&sub, &sub2)) {
unit_file_list_free(h);
goto oom;
}
}
unit_file_list_free(h);
if (!dbus_message_iter_close_container(&iter, &sub))
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnitFileState")) {
const char *name;
UnitFileState state;
const char *s;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_STRING, &name,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
state = unit_file_get_state(m->running_as == MANAGER_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER, NULL, name);
if (state < 0)
return bus_send_error_reply(connection, message, NULL, state);
s = unit_file_state_to_string(state);
assert(s);
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
if (!dbus_message_append_args(
reply,
DBUS_TYPE_STRING, &s,
DBUS_TYPE_INVALID))
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "EnableUnitFiles") ||
dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ReenableUnitFiles") ||
dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "LinkUnitFiles") ||
dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "PresetUnitFiles") ||
dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "MaskUnitFiles")) {
char **l = NULL;
DBusMessageIter iter;
UnitFileScope scope = m->running_as == MANAGER_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER;
UnitFileChange *changes = NULL;
unsigned n_changes = 0;
dbus_bool_t runtime, force;
int carries_install_info = -1;
if (!dbus_message_iter_init(message, &iter))
goto oom;
r = bus_parse_strv_iter(&iter, &l);
if (r < 0) {
if (r == -ENOMEM)
goto oom;
return bus_send_error_reply(connection, message, NULL, r);
}
if (!dbus_message_iter_next(&iter) ||
bus_iter_get_basic_and_next(&iter, DBUS_TYPE_BOOLEAN, &runtime, true) < 0 ||
bus_iter_get_basic_and_next(&iter, DBUS_TYPE_BOOLEAN, &force, false) < 0) {
strv_free(l);
return bus_send_error_reply(connection, message, NULL, -EIO);
}
if (streq(member, "EnableUnitFiles")) {
r = unit_file_enable(scope, runtime, NULL, l, force, &changes, &n_changes);
carries_install_info = r;
} else if (streq(member, "ReenableUnitFiles")) {
r = unit_file_reenable(scope, runtime, NULL, l, force, &changes, &n_changes);
carries_install_info = r;
} else if (streq(member, "LinkUnitFiles"))
r = unit_file_link(scope, runtime, NULL, l, force, &changes, &n_changes);
else if (streq(member, "PresetUnitFiles")) {
r = unit_file_preset(scope, runtime, NULL, l, force, &changes, &n_changes);
carries_install_info = r;
} else if (streq(member, "MaskUnitFiles"))
r = unit_file_mask(scope, runtime, NULL, l, force, &changes, &n_changes);
else
assert_not_reached("Uh? Wrong method");
strv_free(l);
bus_manager_send_unit_files_changed(m);
if (r < 0) {
unit_file_changes_free(changes, n_changes);
return bus_send_error_reply(connection, message, NULL, r);
}
reply = message_from_file_changes(message, changes, n_changes, carries_install_info);
unit_file_changes_free(changes, n_changes);
if (!reply)
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "DisableUnitFiles") ||
dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "UnmaskUnitFiles")) {
char **l = NULL;
DBusMessageIter iter;
UnitFileScope scope = m->running_as == MANAGER_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER;
UnitFileChange *changes = NULL;
unsigned n_changes = 0;
dbus_bool_t runtime;
if (!dbus_message_iter_init(message, &iter))
goto oom;
r = bus_parse_strv_iter(&iter, &l);
if (r < 0) {
if (r == -ENOMEM)
goto oom;
return bus_send_error_reply(connection, message, NULL, r);
}
if (!dbus_message_iter_next(&iter) ||
bus_iter_get_basic_and_next(&iter, DBUS_TYPE_BOOLEAN, &runtime, false) < 0) {
strv_free(l);
return bus_send_error_reply(connection, message, NULL, -EIO);
}
if (streq(member, "DisableUnitFiles"))
r = unit_file_disable(scope, runtime, NULL, l, &changes, &n_changes);
else if (streq(member, "UnmaskUnitFiles"))
r = unit_file_unmask(scope, runtime, NULL, l, &changes, &n_changes);
else
assert_not_reached("Uh? Wrong method");
strv_free(l);
bus_manager_send_unit_files_changed(m);
if (r < 0) {
unit_file_changes_free(changes, n_changes);
return bus_send_error_reply(connection, message, NULL, r);
}
reply = message_from_file_changes(message, changes, n_changes, -1);
unit_file_changes_free(changes, n_changes);
if (!reply)
goto oom;
} else {
const BusBoundProperties bps[] = {
{ "org.freedesktop.systemd1.Manager", bus_systemd_properties, systemd_property_string },
{ "org.freedesktop.systemd1.Manager", bus_manager_properties, m },
{ NULL, }
};
return bus_default_message_handler(connection, message, NULL, INTERFACES_LIST, bps);
}
if (job_type != _JOB_TYPE_INVALID) {
const char *name, *smode, *old_name = NULL;
JobMode mode;
Job *j;
Unit *u;
bool b;
if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "StartUnitReplace"))
b = dbus_message_get_args(
message,
&error,
DBUS_TYPE_STRING, &old_name,
DBUS_TYPE_STRING, &name,
DBUS_TYPE_STRING, &smode,
DBUS_TYPE_INVALID);
else
b = dbus_message_get_args(
message,
&error,
DBUS_TYPE_STRING, &name,
DBUS_TYPE_STRING, &smode,
DBUS_TYPE_INVALID);
if (!b)
return bus_send_error_reply(connection, message, &error, -EINVAL);
if (old_name)
if (!(u = manager_get_unit(m, old_name)) ||
!u->job ||
u->job->type != JOB_START) {
dbus_set_error(&error, BUS_ERROR_NO_SUCH_JOB, "No job queued for unit %s", old_name);
return bus_send_error_reply(connection, message, &error, -ENOENT);
}
if ((mode = job_mode_from_string(smode)) == _JOB_MODE_INVALID) {
dbus_set_error(&error, BUS_ERROR_INVALID_JOB_MODE, "Job mode %s is invalid.", smode);
return bus_send_error_reply(connection, message, &error, -EINVAL);
}
if ((r = manager_load_unit(m, name, NULL, &error, &u)) < 0)
return bus_send_error_reply(connection, message, &error, r);
if (reload_if_possible && unit_can_reload(u)) {
if (job_type == JOB_RESTART)
job_type = JOB_RELOAD_OR_START;
else if (job_type == JOB_TRY_RESTART)
job_type = JOB_RELOAD;
}
if ((job_type == JOB_START && u->refuse_manual_start) ||
(job_type == JOB_STOP && u->refuse_manual_stop) ||
((job_type == JOB_RESTART || job_type == JOB_TRY_RESTART) &&
(u->refuse_manual_start || u->refuse_manual_stop))) {
dbus_set_error(&error, BUS_ERROR_ONLY_BY_DEPENDENCY, "Operation refused, may be requested by dependency only.");
return bus_send_error_reply(connection, message, &error, -EPERM);
}
if ((r = manager_add_job(m, job_type, u, mode, true, &error, &j)) < 0)
return bus_send_error_reply(connection, message, &error, r);
if (!(j->bus_client = strdup(message_get_sender_with_fallback(message))))
goto oom;
j->bus = connection;
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
if (!(path = job_dbus_path(j)))
goto oom;
if (!dbus_message_append_args(
reply,
DBUS_TYPE_OBJECT_PATH, &path,
DBUS_TYPE_INVALID))
goto oom;
}
if (reply) {
if (!dbus_connection_send(connection, reply, NULL))
goto oom;
dbus_message_unref(reply);
}
free(path);
return DBUS_HANDLER_RESULT_HANDLED;
oom:
free(path);
if (reply)
dbus_message_unref(reply);
dbus_error_free(&error);
return DBUS_HANDLER_RESULT_NEED_MEMORY;
}
const DBusObjectPathVTable bus_manager_vtable = {
.message_function = bus_manager_message_handler
};
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