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cad45ba11e
a) Instead of parsing the bus messages inside of selinux-access.c simply pass everything pre-parsed in the functions b) implement the access checking with a macro that resolves to nothing on non-selinux builds c) split out the selinux checks into their own sources selinux-util.[ch] d) this unifies the job creation code behind the D-Bus calls Manager.StartUnit() and Unit.Start().
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;
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Path *p = PATH(u);
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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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t = UNIT_DEREF(p->unit) ? UNIT_DEREF(p->unit)->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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