diff options
Diffstat (limited to 'src/portable/portabled.c')
| -rw-r--r-- | src/portable/portabled.c | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/src/portable/portabled.c b/src/portable/portabled.c new file mode 100644 index 0000000..136c5fa --- /dev/null +++ b/src/portable/portabled.c @@ -0,0 +1,177 @@ +/* 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); |