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/* SPDX-License-Identifier: LGPL-2.1+ */
/***
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 "alloc-util.h"
#include "bus-util.h"
#include "dbus-path.h"
#include "dbus-util.h"
#include "list.h"
#include "path.h"
#include "path-util.h"
#include "string-util.h"
#include "unit.h"
static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_result, path_result, PathResult);
static int property_get_paths(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
Path *p = userdata;
PathSpec *k;
int r;
assert(bus);
assert(reply);
assert(p);
r = sd_bus_message_open_container(reply, 'a', "(ss)");
if (r < 0)
return r;
LIST_FOREACH(spec, k, p->specs) {
r = sd_bus_message_append(reply, "(ss)", path_type_to_string(k->type), k->path);
if (r < 0)
return r;
}
return sd_bus_message_close_container(reply);
}
static int property_get_unit(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
Unit *p = userdata, *trigger;
assert(bus);
assert(reply);
assert(p);
trigger = UNIT_TRIGGER(p);
return sd_bus_message_append(reply, "s", trigger ? trigger->id : "");
}
const sd_bus_vtable bus_path_vtable[] = {
SD_BUS_VTABLE_START(0),
SD_BUS_PROPERTY("Unit", "s", property_get_unit, 0, SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("Paths", "a(ss)", property_get_paths, 0, SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("MakeDirectory", "b", bus_property_get_bool, offsetof(Path, make_directory), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("DirectoryMode", "u", bus_property_get_mode, offsetof(Path, directory_mode), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("Result", "s", property_get_result, offsetof(Path, result), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_VTABLE_END
};
static int bus_path_set_transient_property(
Path *p,
const char *name,
sd_bus_message *message,
UnitWriteFlags flags,
sd_bus_error *error) {
Unit *u = UNIT(p);
int r;
assert(p);
assert(name);
assert(message);
flags |= UNIT_PRIVATE;
if (streq(name, "MakeDirectory"))
return bus_set_transient_bool(u, name, &p->make_directory, message, flags, error);
if (streq(name, "DirectoryMode"))
return bus_set_transient_mode_t(u, name, &p->directory_mode, message, flags, error);
if (streq(name, "Paths")) {
const char *type_name, *path;
bool empty = true;
r = sd_bus_message_enter_container(message, 'a', "(ss)");
if (r < 0)
return r;
while ((r = sd_bus_message_read(message, "(ss)", &type_name, &path)) > 0) {
PathType t;
t = path_type_from_string(type_name);
if (t < 0)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unknown path type: %s", type_name);
if (isempty(path))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path in %s is empty", type_name);
if (!path_is_absolute(path))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path in %s is not absolute: %s", type_name, path);
if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
_cleanup_free_ char *k;
PathSpec *s;
k = strdup(path);
if (!k)
return -ENOMEM;
s = new0(PathSpec, 1);
if (!s)
return -ENOMEM;
s->unit = u;
s->path = path_kill_slashes(k);
k = NULL;
s->type = t;
s->inotify_fd = -1;
LIST_PREPEND(spec, p->specs, s);
unit_write_settingf(u, flags|UNIT_ESCAPE_SPECIFIERS, name, "%s=%s", type_name, path);
}
empty = false;
}
if (r < 0)
return r;
r = sd_bus_message_exit_container(message);
if (r < 0)
return r;
if (!UNIT_WRITE_FLAGS_NOOP(flags) && empty) {
path_free_specs(p);
unit_write_settingf(u, flags, name, "PathExists=");
}
return 1;
}
return 0;
}
int bus_path_set_property(
Unit *u,
const char *name,
sd_bus_message *message,
UnitWriteFlags mode,
sd_bus_error *error) {
Path *p = PATH(u);
assert(p);
assert(name);
assert(message);
if (u->transient && u->load_state == UNIT_STUB)
return bus_path_set_transient_property(p, name, message, mode, error);
return 0;
}
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