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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 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 "strv.h"
#include "path-util.h"
#include "dbus-unit.h"
#include "dbus-execute.h"
#include "dbus-kill.h"
#include "dbus-cgroup.h"
#include "dbus-common.h"
#include "selinux-access.h"
#include "dbus-service.h"
#define BUS_SERVICE_INTERFACE \
" <interface name=\"org.freedesktop.systemd1.Service\">\n" \
" <property name=\"Type\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"Restart\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"PIDFile\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"NotifyAccess\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"RestartUSec\" type=\"t\" access=\"read\"/>\n" \
" <property name=\"TimeoutStartUSec\" type=\"t\" access=\"read\"/>\n" \
" <property name=\"TimeoutStopUSec\" type=\"t\" access=\"read\"/>\n" \
" <property name=\"WatchdogUSec\" type=\"t\" access=\"read\"/>\n" \
" <property name=\"WatchdogTimestamp\" type=\"t\" access=\"read\"/>\n" \
" <property name=\"WatchdogTimestampMonotonic\" type=\"t\" access=\"read\"/>\n" \
" <property name=\"StartLimitInterval\" type=\"t\" access=\"read\"/>\n" \
" <property name=\"StartLimitBurst\" type=\"u\" access=\"read\"/>\n" \
" <property name=\"StartLimitAction\" type=\"s\" access=\"readwrite\"/>\n" \
BUS_EXEC_COMMAND_INTERFACE("ExecStartPre") \
BUS_EXEC_COMMAND_INTERFACE("ExecStart") \
BUS_EXEC_COMMAND_INTERFACE("ExecStartPost") \
BUS_EXEC_COMMAND_INTERFACE("ExecReload") \
BUS_EXEC_COMMAND_INTERFACE("ExecStop") \
BUS_EXEC_COMMAND_INTERFACE("ExecStopPost") \
BUS_EXEC_CONTEXT_INTERFACE \
BUS_KILL_CONTEXT_INTERFACE \
BUS_CGROUP_CONTEXT_INTERFACE \
" <property name=\"PermissionsStartOnly\" type=\"b\" access=\"read\"/>\n" \
" <property name=\"RootDirectoryStartOnly\" type=\"b\" access=\"read\"/>\n" \
" <property name=\"RemainAfterExit\" type=\"b\" access=\"read\"/>\n" \
BUS_EXEC_STATUS_INTERFACE("ExecMain") \
" <property name=\"MainPID\" type=\"u\" access=\"read\"/>\n" \
" <property name=\"ControlPID\" type=\"u\" access=\"read\"/>\n" \
" <property name=\"BusName\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"StatusText\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"Result\" type=\"s\" access=\"read\"/>\n" \
" </interface>\n"
#define INTROSPECTION \
DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \
"<node>\n" \
BUS_UNIT_INTERFACE \
BUS_SERVICE_INTERFACE \
BUS_PROPERTIES_INTERFACE \
BUS_PEER_INTERFACE \
BUS_INTROSPECTABLE_INTERFACE \
"</node>\n"
#define INTERFACES_LIST \
BUS_UNIT_INTERFACES_LIST \
"org.freedesktop.systemd1.Service\0"
const char bus_service_interface[] _introspect_("Service") = BUS_SERVICE_INTERFACE;
const char bus_service_invalidating_properties[] =
"ExecStartPre\0"
"ExecStart\0"
"ExecStartPost\0"
"ExecReload\0"
"ExecStop\0"
"ExecStopPost\0"
"ExecMain\0"
"WatchdogTimestamp\0"
"WatchdogTimestampMonotonic\0"
"MainPID\0"
"ControlPID\0"
"StatusText\0"
"Result\0";
static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_service_append_type, service_type, ServiceType);
static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_service_append_restart, service_restart, ServiceRestart);
static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_service_append_notify_access, notify_access, NotifyAccess);
static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_service_append_service_result, service_result, ServiceResult);
static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_service_append_start_limit_action, start_limit_action, StartLimitAction);
static DEFINE_BUS_PROPERTY_SET_ENUM(bus_service_set_start_limit_action, start_limit_action, StartLimitAction);
static const BusProperty bus_exec_main_status_properties[] = {
{ "ExecMainStartTimestamp", bus_property_append_usec, "t", offsetof(ExecStatus, start_timestamp.realtime) },
{ "ExecMainStartTimestampMonotonic",bus_property_append_usec, "t", offsetof(ExecStatus, start_timestamp.monotonic) },
{ "ExecMainExitTimestamp", bus_property_append_usec, "t", offsetof(ExecStatus, exit_timestamp.realtime) },
{ "ExecMainExitTimestampMonotonic", bus_property_append_usec, "t", offsetof(ExecStatus, exit_timestamp.monotonic) },
{ "ExecMainPID", bus_property_append_pid, "u", offsetof(ExecStatus, pid) },
{ "ExecMainCode", bus_property_append_int, "i", offsetof(ExecStatus, code) },
{ "ExecMainStatus", bus_property_append_int, "i", offsetof(ExecStatus, status) },
{}
};
static const BusProperty bus_service_properties[] = {
{ "Type", bus_service_append_type, "s", offsetof(Service, type) },
{ "Restart", bus_service_append_restart, "s", offsetof(Service, restart) },
{ "PIDFile", bus_property_append_string, "s", offsetof(Service, pid_file), true },
{ "NotifyAccess", bus_service_append_notify_access, "s", offsetof(Service, notify_access) },
{ "RestartUSec", bus_property_append_usec, "t", offsetof(Service, restart_usec) },
{ "TimeoutStartUSec", bus_property_append_usec, "t", offsetof(Service, timeout_start_usec) },
{ "TimeoutStopUSec", bus_property_append_usec, "t", offsetof(Service, timeout_stop_usec) },
{ "WatchdogUSec", bus_property_append_usec, "t", offsetof(Service, watchdog_usec) },
{ "WatchdogTimestamp", bus_property_append_usec, "t", offsetof(Service, watchdog_timestamp.realtime) },
{ "WatchdogTimestampMonotonic",bus_property_append_usec, "t", offsetof(Service, watchdog_timestamp.monotonic) },
{ "StartLimitInterval", bus_property_append_usec, "t", offsetof(Service, start_limit.interval) },
{ "StartLimitBurst", bus_property_append_uint32, "u", offsetof(Service, start_limit.burst) },
{ "StartLimitAction", bus_service_append_start_limit_action,"s", offsetof(Service, start_limit_action), false, bus_service_set_start_limit_action},
BUS_EXEC_COMMAND_PROPERTY("ExecStartPre", offsetof(Service, exec_command[SERVICE_EXEC_START_PRE]), true ),
BUS_EXEC_COMMAND_PROPERTY("ExecStart", offsetof(Service, exec_command[SERVICE_EXEC_START]), true ),
BUS_EXEC_COMMAND_PROPERTY("ExecStartPost", offsetof(Service, exec_command[SERVICE_EXEC_START_POST]), true ),
BUS_EXEC_COMMAND_PROPERTY("ExecReload", offsetof(Service, exec_command[SERVICE_EXEC_RELOAD]), true ),
BUS_EXEC_COMMAND_PROPERTY("ExecStop", offsetof(Service, exec_command[SERVICE_EXEC_STOP]), true ),
BUS_EXEC_COMMAND_PROPERTY("ExecStopPost", offsetof(Service, exec_command[SERVICE_EXEC_STOP_POST]), true ),
{ "PermissionsStartOnly", bus_property_append_bool, "b", offsetof(Service, permissions_start_only) },
{ "RootDirectoryStartOnly", bus_property_append_bool, "b", offsetof(Service, root_directory_start_only) },
{ "RemainAfterExit", bus_property_append_bool, "b", offsetof(Service, remain_after_exit) },
{ "GuessMainPID", bus_property_append_bool, "b", offsetof(Service, guess_main_pid) },
{ "MainPID", bus_property_append_pid, "u", offsetof(Service, main_pid) },
{ "ControlPID", bus_property_append_pid, "u", offsetof(Service, control_pid) },
{ "BusName", bus_property_append_string, "s", offsetof(Service, bus_name), true },
{ "StatusText", bus_property_append_string, "s", offsetof(Service, status_text), true },
{ "Result", bus_service_append_service_result,"s", offsetof(Service, result) },
{}
};
DBusHandlerResult bus_service_message_handler(Unit *u, DBusConnection *connection, DBusMessage *message) {
Service *s = SERVICE(u);
const BusBoundProperties bps[] = {
{ "org.freedesktop.systemd1.Unit", bus_unit_properties, u },
{ "org.freedesktop.systemd1.Service", bus_service_properties, s },
{ "org.freedesktop.systemd1.Service", bus_exec_context_properties, &s->exec_context },
{ "org.freedesktop.systemd1.Service", bus_kill_context_properties, &s->kill_context },
{ "org.freedesktop.systemd1.Service", bus_cgroup_context_properties, &s->cgroup_context },
{ "org.freedesktop.systemd1.Service", bus_exec_main_status_properties, &s->main_exec_status },
{}
};
SELINUX_UNIT_ACCESS_CHECK(u, connection, message, "status");
return bus_default_message_handler(connection, message, INTROSPECTION, INTERFACES_LIST, bps);
}
static int bus_service_set_transient_properties(
Service *s,
const char *name,
DBusMessageIter *i,
UnitSetPropertiesMode mode,
DBusError *error) {
int r;
assert(name);
assert(s);
assert(i);
if (streq(name, "ExecStart")) {
DBusMessageIter sub;
unsigned n = 0;
if (dbus_message_iter_get_arg_type(i) != DBUS_TYPE_ARRAY ||
dbus_message_iter_get_element_type(i) != DBUS_TYPE_STRUCT)
return -EINVAL;
dbus_message_iter_recurse(i, &sub);
while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
_cleanup_strv_free_ char **argv = NULL;
DBusMessageIter sub2;
dbus_bool_t ignore;
const char *path;
dbus_message_iter_recurse(&sub, &sub2);
if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, true) < 0)
return -EINVAL;
if (!path_is_absolute(path)) {
dbus_set_error(error, DBUS_ERROR_INVALID_ARGS, "Path %s is not absolute.", path);
return -EINVAL;
}
r = bus_parse_strv_iter(&sub2, &argv);
if (r < 0)
return r;
dbus_message_iter_next(&sub2);
if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_BOOLEAN, &ignore, false) < 0)
return -EINVAL;
if (mode != UNIT_CHECK) {
ExecCommand *c;
c = new0(ExecCommand, 1);
if (!c)
return -ENOMEM;
c->path = strdup(path);
if (!c->path) {
free(c);
return -ENOMEM;
}
c->argv = argv;
argv = NULL;
c->ignore = ignore;
path_kill_slashes(c->path);
exec_command_append_list(&s->exec_command[SERVICE_EXEC_START], c);
}
n++;
dbus_message_iter_next(&sub);
}
if (mode != UNIT_CHECK) {
_cleanup_free_ char *buf = NULL;
_cleanup_fclose_ FILE *f = NULL;
ExecCommand *c;
size_t size = 0;
if (n == 0) {
exec_command_free_list(s->exec_command[SERVICE_EXEC_START]);
s->exec_command[SERVICE_EXEC_START] = NULL;
}
f = open_memstream(&buf, &size);
if (!f)
return -ENOMEM;
fputs("ExecStart=\n", f);
LIST_FOREACH(command, c, s->exec_command[SERVICE_EXEC_START]) {
char **a;
fputs("ExecStart=", f);
if (c->ignore)
fputc('-', f);
fputc('@', f);
fputs(c->path, f);
STRV_FOREACH(a, c->argv) {
fputc(' ', f);
fputs(*a, f);
}
fputc('\n', f);
}
fflush(f);
unit_write_drop_in_private_section(UNIT(s), mode, "exec-start", buf);
}
return 1;
}
return 0;
}
int bus_service_set_property(
Unit *u,
const char *name,
DBusMessageIter *i,
UnitSetPropertiesMode mode,
DBusError *error) {
Service *s = SERVICE(u);
int r;
assert(name);
assert(u);
assert(i);
r = bus_cgroup_set_property(u, &s->cgroup_context, name, i, mode, error);
if (r != 0)
return r;
if (u->transient && u->load_state == UNIT_STUB) {
/* This is a transient unit, let's load a little more */
r = bus_service_set_transient_properties(s, name, i, mode, error);
if (r != 0)
return r;
}
return 0;
}
int bus_service_commit_properties(Unit *u) {
assert(u);
unit_realize_cgroup(u);
return 0;
}
|
