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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <sys/stat.h>
#include <sys/types.h>
#include "sd-bus.h"
#include "alloc-util.h"
#include "bus-log-control-api.h"
#include "bus-polkit.h"
#include "common-signal.h"
#include "constants.h"
#include "daemon-util.h"
#include "main-func.h"
#include "portabled-bus.h"
#include "portabled-image-bus.h"
#include "portabled.h"
#include "process-util.h"
#include "service-util.h"
#include "signal-util.h"
static Manager* manager_unref(Manager *m);
DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_unref);
static int manager_new(Manager **ret) {
_cleanup_(manager_unrefp) Manager *m = NULL;
int r;
assert(ret);
m = new0(Manager, 1);
if (!m)
return -ENOMEM;
r = sd_event_default(&m->event);
if (r < 0)
return r;
r = sd_event_add_signal(m->event, NULL, SIGINT, NULL, NULL);
if (r < 0)
return r;
r = sd_event_add_signal(m->event, NULL, SIGTERM, NULL, NULL);
if (r < 0)
return r;
r = sd_event_add_signal(m->event, NULL, SIGRTMIN+18, sigrtmin18_handler, NULL);
if (r < 0)
return r;
r = sd_event_add_memory_pressure(m->event, NULL, NULL, NULL);
if (r < 0)
log_debug_errno(r, "Failed allocate memory pressure event source, ignoring: %m");
(void) sd_event_set_watchdog(m->event, true);
*ret = TAKE_PTR(m);
return 0;
}
static Manager* manager_unref(Manager *m) {
assert(m);
hashmap_free(m->image_cache);
sd_event_source_unref(m->image_cache_defer_event);
bus_verify_polkit_async_registry_free(m->polkit_registry);
sd_bus_flush_close_unref(m->bus);
sd_event_unref(m->event);
return mfree(m);
}
static int manager_connect_bus(Manager *m) {
int r;
assert(m);
assert(!m->bus);
r = sd_bus_default_system(&m->bus);
if (r < 0)
return log_error_errno(r, "Failed to connect to system bus: %m");
r = bus_add_implementation(m->bus, &manager_object, m);
if (r < 0)
return r;
r = bus_log_control_api_register(m->bus);
if (r < 0)
return r;
r = sd_bus_request_name_async(m->bus, NULL, "org.freedesktop.portable1", 0, NULL, NULL);
if (r < 0)
return log_error_errno(r, "Failed to request name: %m");
r = sd_bus_attach_event(m->bus, m->event, 0);
if (r < 0)
return log_error_errno(r, "Failed to attach bus to event loop: %m");
(void) sd_bus_set_exit_on_disconnect(m->bus, true);
return 0;
}
static int manager_startup(Manager *m) {
int r;
assert(m);
r = manager_connect_bus(m);
if (r < 0)
return r;
return 0;
}
static bool check_idle(void *userdata) {
Manager *m = userdata;
return !m->operations;
}
static int manager_run(Manager *m) {
assert(m);
return bus_event_loop_with_idle(
m->event,
m->bus,
"org.freedesktop.portable1",
DEFAULT_EXIT_USEC,
check_idle, m);
}
static int run(int argc, char *argv[]) {
_cleanup_(manager_unrefp) Manager *m = NULL;
int r;
log_setup();
r = service_parse_argv("systemd-portabled.service",
"Manage registrations of portable images.",
BUS_IMPLEMENTATIONS(&manager_object,
&log_control_object),
argc, argv);
if (r <= 0)
return r;
umask(0022);
if (argc != 1)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "This program takes no arguments.");
assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGCHLD, SIGTERM, SIGINT, SIGRTMIN+18, -1) >= 0);
r = manager_new(&m);
if (r < 0)
return log_error_errno(r, "Failed to allocate manager object: %m");
r = manager_startup(m);
if (r < 0)
return log_error_errno(r, "Failed to fully start up daemon: %m");
log_debug("systemd-portabled running as pid " PID_FMT, getpid_cached());
r = sd_notify(false, NOTIFY_READY);
if (r < 0)
log_warning_errno(r, "Failed to send readiness notification, ignoring: %m");
r = manager_run(m);
(void) sd_notify(false, NOTIFY_STOPPING);
log_debug("systemd-portabled stopped as pid " PID_FMT, getpid_cached());
return r;
}
DEFINE_MAIN_FUNCTION(run);
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