machine-dbus.c revision a658cafa98ab55ea948c29bc87eb3945d515fb41
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2011 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 <string.h>
#include "bus-util.h"
#include "machine.h"
static int property_get_id(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
sd_bus_error *error,
void *userdata) {
Machine *m = userdata;
int r;
assert(bus);
assert(reply);
assert(m);
r = sd_bus_message_append_array(reply, 'y', &m->id, 16);
if (r < 0)
return r;
return 1;
}
static int property_get_state(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
sd_bus_error *error,
void *userdata) {
Machine *m = userdata;
const char *state;
int r;
assert(bus);
assert(reply);
assert(m);
state = machine_state_to_string(machine_get_state(m));
r = sd_bus_message_append_basic(reply, 's', state);
if (r < 0)
return r;
return 1;
}
static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_class, machine_class, MachineClass);
static int method_terminate(sd_bus *bus, sd_bus_message *message, void *userdata) {
Machine *m = userdata;
int r;
assert(bus);
assert(message);
assert(m);
r = machine_stop(m);
if (r < 0)
return sd_bus_reply_method_errno(bus, message, r, NULL);
return sd_bus_reply_method_return(bus, message, NULL);
}
static int method_kill(sd_bus *bus, sd_bus_message *message, void *userdata) {
Machine *m = userdata;
const char *swho;
int32_t signo;
KillWho who;
int r;
assert(bus);
assert(message);
assert(m);
r = sd_bus_message_read(message, "si", &swho, &signo);
if (r < 0)
return sd_bus_reply_method_errno(bus, message, r, NULL);
if (isempty(swho))
who = KILL_ALL;
else {
who = kill_who_from_string(swho);
if (who < 0)
return sd_bus_reply_method_errorf(bus, message, SD_BUS_ERROR_INVALID_ARGS, "Invalid kill parameter '%s'", swho);
}
if (signo <= 0 || signo >= _NSIG)
return sd_bus_reply_method_errorf(bus, message, SD_BUS_ERROR_INVALID_ARGS, "Invalid signal %i", signo);
r = machine_kill(m, who, signo);
if (r < 0)
return sd_bus_reply_method_errno(bus, message, r, NULL);
return sd_bus_reply_method_return(bus, message, NULL);
}
const sd_bus_vtable machine_vtable[] = {
SD_BUS_VTABLE_START(0),
SD_BUS_PROPERTY("Name", "s", NULL, offsetof(Machine, name), 0),
SD_BUS_PROPERTY("Id", "ay", property_get_id, 0, 0),
SD_BUS_PROPERTY("Timestamp", "t", NULL, offsetof(Machine, timestamp.realtime), 0),
SD_BUS_PROPERTY("TimestampMonotonic", "t", NULL, offsetof(Machine, timestamp.monotonic), 0),
SD_BUS_PROPERTY("Service", "s", NULL, offsetof(Machine, service), 0),
SD_BUS_PROPERTY("Scope", "s", NULL, offsetof(Machine, scope), 0),
SD_BUS_PROPERTY("Leader", "u", NULL, offsetof(Machine, leader), 0),
SD_BUS_PROPERTY("Class", "s", property_get_class, offsetof(Machine, class), 0),
SD_BUS_PROPERTY("State", "s", property_get_state, 0, 0),
SD_BUS_PROPERTY("RootDirectory", "s", NULL, offsetof(Machine, root_directory), 0),
SD_BUS_METHOD("Terminate", NULL, NULL, method_terminate, 0),
SD_BUS_METHOD("Kill", "si", NULL, method_kill, 0),
SD_BUS_VTABLE_END
};
int machine_object_find(sd_bus *bus, const char *path, const char *interface, void **found, void *userdata) {
_cleanup_free_ char *e = NULL;
Manager *m = userdata;
Machine *machine;
const char *p;
assert(bus);
assert(path);
assert(interface);
assert(found);
assert(m);
p = startswith(path, "/org/freedesktop/machine1/machine/");
if (!p)
return 0;
e = bus_path_unescape(p);
if (!e)
return -ENOMEM;
machine = hashmap_get(m->machines, e);
if (!machine)
return 0;
*found = machine;
return 1;
}
char *machine_bus_path(Machine *m) {
_cleanup_free_ char *e = NULL;
assert(m);
e = bus_path_escape(m->name);
if (!e)
return NULL;
return strappend("/org/freedesktop/machine1/machine/", e);
}
int machine_send_signal(Machine *m, bool new_machine) {
_cleanup_free_ char *p = NULL;
assert(m);
p = machine_bus_path(m);
if (!p)
return -ENOMEM;
return sd_bus_emit_signal(
m->manager->bus,
"/org/freedesktop/machine1",
"org.freedesktop.machine1.Manager",
new_machine ? "MachineNew" : "MachineRemoved",
"so", m->name, p);
}
int machine_send_create_reply(Machine *m, sd_bus_error *error) {
_cleanup_bus_message_unref_ sd_bus_message *c = NULL;
_cleanup_free_ char *p = NULL;
assert(m);
if (!m->create_message)
return 0;
c = m->create_message;
m->create_message = NULL;
if (error)
return sd_bus_reply_method_error(m->manager->bus, c, error);
/* Update the machine state file before we notify the client
* about the result. */
machine_save(m);
p = machine_bus_path(m);
if (!p)
return -ENOMEM;
return sd_bus_reply_method_return(m->manager->bus, c, "o", p);
}