Lennart Poettering
3ecaa09bcc
Instead of having explicit type-specific callbacks that inform the triggering unit when a triggered unit changes state, make this generic so that state changes are forwarded betwee any triggered and triggering unit. Also, get rid of UnitRef references from automount, timer, path units, to the units they trigger and rely exclsuively on UNIT_TRIGGER type dendencies.
123 lines
4.7 KiB
C
123 lines
4.7 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <errno.h>
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#include "dbus-unit.h"
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#include "dbus-path.h"
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#include "dbus-execute.h"
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#include "dbus-common.h"
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#include "selinux-access.h"
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#define BUS_PATH_INTERFACE \
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" <interface name=\"org.freedesktop.systemd1.Path\">\n" \
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" <property name=\"Unit\" type=\"s\" access=\"read\"/>\n" \
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" <property name=\"Paths\" type=\"a(ss)\" access=\"read\"/>\n" \
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" <property name=\"MakeDirectory\" type=\"b\" access=\"read\"/>\n" \
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" <property name=\"DirectoryMode\" type=\"u\" access=\"read\"/>\n" \
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" <property name=\"Result\" type=\"s\" access=\"read\"/>\n" \
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" </interface>\n"
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#define INTROSPECTION \
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DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \
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"<node>\n" \
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BUS_UNIT_INTERFACE \
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BUS_PATH_INTERFACE \
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BUS_PROPERTIES_INTERFACE \
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BUS_PEER_INTERFACE \
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BUS_INTROSPECTABLE_INTERFACE \
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"</node>\n"
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#define INTERFACES_LIST \
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BUS_UNIT_INTERFACES_LIST \
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"org.freedesktop.systemd1.Path\0"
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const char bus_path_interface[] _introspect_("Path") = BUS_PATH_INTERFACE;
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const char bus_path_invalidating_properties[] =
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"Result\0";
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static int bus_path_append_paths(DBusMessageIter *i, const char *property, void *data) {
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Path *p = data;
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DBusMessageIter sub, sub2;
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PathSpec *k;
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assert(i);
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assert(property);
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assert(p);
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if (!dbus_message_iter_open_container(i, DBUS_TYPE_ARRAY, "(ss)", &sub))
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return -ENOMEM;
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LIST_FOREACH(spec, k, p->specs) {
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const char *t = path_type_to_string(k->type);
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if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) ||
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!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &t) ||
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!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &k->path) ||
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!dbus_message_iter_close_container(&sub, &sub2))
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return -ENOMEM;
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}
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if (!dbus_message_iter_close_container(i, &sub))
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return -ENOMEM;
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return 0;
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}
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static int bus_path_append_unit(DBusMessageIter *i, const char *property, void *data) {
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Unit *u = data, *trigger;
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const char *t;
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assert(i);
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assert(property);
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assert(u);
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trigger = UNIT_TRIGGER(u);
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t = trigger ? trigger->id : "";
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return dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t) ? 0 : -ENOMEM;
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}
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static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_path_append_path_result, path_result, PathResult);
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static const BusProperty bus_path_properties[] = {
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{ "Unit", bus_path_append_unit, "s", 0 },
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{ "Paths", bus_path_append_paths, "a(ss)", 0 },
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{ "MakeDirectory", bus_property_append_bool, "b", offsetof(Path, make_directory) },
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{ "DirectoryMode", bus_property_append_mode, "u", offsetof(Path, directory_mode) },
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{ "Result", bus_path_append_path_result, "s", offsetof(Path, result) },
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{ NULL, }
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};
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DBusHandlerResult bus_path_message_handler(Unit *u, DBusConnection *c, DBusMessage *message) {
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Path *p = PATH(u);
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const BusBoundProperties bps[] = {
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{ "org.freedesktop.systemd1.Unit", bus_unit_properties, u },
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{ "org.freedesktop.systemd1.Path", bus_path_properties, p },
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{ NULL, }
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};
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SELINUX_UNIT_ACCESS_CHECK(u, c, message, "status");
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return bus_default_message_handler(c, message, INTROSPECTION, INTERFACES_LIST, bps);
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}
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