diff options
Diffstat (limited to 'src/timedate/timedated.c')
| -rw-r--r-- | src/timedate/timedated.c | 930 |
1 files changed, 930 insertions, 0 deletions
diff --git a/src/timedate/timedated.c b/src/timedate/timedated.c new file mode 100644 index 000000000..6a7d980c3 --- /dev/null +++ b/src/timedate/timedated.c @@ -0,0 +1,930 @@ +/*-*- 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 General Public License as published by + the Free Software Foundation; either version 2 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 + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with systemd; If not, see <http://www.gnu.org/licenses/>. +***/ + +#include <dbus/dbus.h> + +#include <errno.h> +#include <string.h> +#include <unistd.h> + +#include "util.h" +#include "strv.h" +#include "dbus-common.h" +#include "polkit.h" +#include "def.h" + +#define NULL_ADJTIME_UTC "0.0 0 0\n0\nUTC\n" +#define NULL_ADJTIME_LOCAL "0.0 0 0\n0\nLOCAL\n" + +#define INTERFACE \ + " <interface name=\"org.freedesktop.timedate1\">\n" \ + " <property name=\"Timezone\" type=\"s\" access=\"read\"/>\n" \ + " <property name=\"LocalRTC\" type=\"b\" access=\"read\"/>\n" \ + " <property name=\"NTP\" type=\"b\" access=\"read\"/>\n" \ + " <method name=\"SetTime\">\n" \ + " <arg name=\"usec_utc\" type=\"x\" direction=\"in\"/>\n" \ + " <arg name=\"relative\" type=\"b\" direction=\"in\"/>\n" \ + " <arg name=\"user_interaction\" type=\"b\" direction=\"in\"/>\n" \ + " </method>\n" \ + " <method name=\"SetTimezone\">\n" \ + " <arg name=\"timezone\" type=\"s\" direction=\"in\"/>\n" \ + " <arg name=\"user_interaction\" type=\"b\" direction=\"in\"/>\n" \ + " </method>\n" \ + " <method name=\"SetLocalRTC\">\n" \ + " <arg name=\"local_rtc\" type=\"b\" direction=\"in\"/>\n" \ + " <arg name=\"fix_system\" type=\"b\" direction=\"in\"/>\n" \ + " <arg name=\"user_interaction\" type=\"b\" direction=\"in\"/>\n" \ + " </method>\n" \ + " <method name=\"SetNTP\">\n" \ + " <arg name=\"use_ntp\" type=\"b\" direction=\"in\"/>\n" \ + " <arg name=\"user_interaction\" type=\"b\" direction=\"in\"/>\n" \ + " </method>\n" \ + " </interface>\n" + +#define INTROSPECTION \ + DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \ + "<node>\n" \ + INTERFACE \ + BUS_PROPERTIES_INTERFACE \ + BUS_INTROSPECTABLE_INTERFACE \ + BUS_PEER_INTERFACE \ + "</node>\n" + +#define INTERFACES_LIST \ + BUS_GENERIC_INTERFACES_LIST \ + "org.freedesktop.timedate1\0" + +const char timedate_interface[] _introspect_("timedate1") = INTERFACE; + +typedef struct TZ { + char *zone; + bool local_rtc; + int use_ntp; +} TZ; + +static TZ tz = { + .use_ntp = -1, +}; + +static usec_t remain_until; + +static void free_data(void) { + free(tz.zone); + tz.zone = NULL; + + tz.local_rtc = false; +} + +static bool valid_timezone(const char *name) { + const char *p; + char *t; + bool slash = false; + int r; + struct stat st; + + assert(name); + + if (*name == '/' || *name == 0) + return false; + + for (p = name; *p; p++) { + if (!(*p >= '0' && *p <= '9') && + !(*p >= 'a' && *p <= 'z') && + !(*p >= 'A' && *p <= 'Z') && + !(*p == '-' || *p == '_' || *p == '+' || *p == '/')) + return false; + + if (*p == '/') { + + if (slash) + return false; + + slash = true; + } else + slash = false; + } + + if (slash) + return false; + + t = strappend("/usr/share/zoneinfo/", name); + if (!t) + return false; + + r = stat(t, &st); + free(t); + + if (r < 0) + return false; + + if (!S_ISREG(st.st_mode)) + return false; + + return true; +} + +static void verify_timezone(void) { + char *p, *a = NULL, *b = NULL; + size_t l, q; + int j, k; + + if (!tz.zone) + return; + + p = strappend("/usr/share/zoneinfo/", tz.zone); + if (!p) { + log_error("Out of memory"); + return; + } + + j = read_full_file("/etc/localtime", &a, &l); + k = read_full_file(p, &b, &q); + + free(p); + + if (j < 0 || k < 0 || l != q || memcmp(a, b, l)) { + log_warning("/etc/localtime and /etc/timezone out of sync."); + free(tz.zone); + tz.zone = NULL; + } + + free(a); + free(b); +} + +static int read_data(void) { + int r; + + free_data(); + + r = read_one_line_file("/etc/timezone", &tz.zone); + if (r < 0) { + if (r != -ENOENT) + log_warning("Failed to read /etc/timezone: %s", strerror(-r)); + +#ifdef TARGET_FEDORA + r = parse_env_file("/etc/sysconfig/clock", NEWLINE, + "ZONE", &tz.zone, + NULL); + + if (r < 0 && r != -ENOENT) + log_warning("Failed to read /etc/sysconfig/clock: %s", strerror(-r)); +#endif + } + + if (isempty(tz.zone)) { + free(tz.zone); + tz.zone = NULL; + } + + verify_timezone(); + + tz.local_rtc = hwclock_is_localtime() > 0; + + return 0; +} + +static int write_data_timezone(void) { + int r = 0; + char *p; + + if (!tz.zone) { + if (unlink("/etc/timezone") < 0 && errno != ENOENT) + r = -errno; + + if (unlink("/etc/localtime") < 0 && errno != ENOENT) + r = -errno; + + return r; + } + + p = strappend("/usr/share/zoneinfo/", tz.zone); + if (!p) { + log_error("Out of memory"); + return -ENOMEM; + } + + r = symlink_or_copy_atomic(p, "/etc/localtime"); + free(p); + + if (r < 0) + return r; + + r = write_one_line_file_atomic("/etc/timezone", tz.zone); + if (r < 0) + return r; + + return 0; +} + +static int write_data_local_rtc(void) { + int r; + char *s, *w; + + r = read_full_file("/etc/adjtime", &s, NULL); + if (r < 0) { + if (r != -ENOENT) + return r; + + if (!tz.local_rtc) + return 0; + + w = strdup(NULL_ADJTIME_LOCAL); + if (!w) + return -ENOMEM; + } else { + char *p, *e; + size_t a, b; + + p = strchr(s, '\n'); + if (!p) { + free(s); + return -EIO; + } + + p = strchr(p+1, '\n'); + if (!p) { + free(s); + return -EIO; + } + + p++; + e = strchr(p, '\n'); + if (!e) { + free(s); + return -EIO; + } + + a = p - s; + b = strlen(e); + + w = new(char, a + (tz.local_rtc ? 5 : 3) + b + 1); + if (!w) { + free(s); + return -ENOMEM; + } + + *(char*) mempcpy(stpcpy(mempcpy(w, s, a), tz.local_rtc ? "LOCAL" : "UTC"), e, b) = 0; + + if (streq(w, NULL_ADJTIME_UTC)) { + free(w); + + if (unlink("/etc/adjtime") < 0) { + if (errno != ENOENT) + return -errno; + } + + return 0; + } + } + + r = write_one_line_file_atomic("/etc/adjtime", w); + free(w); + + return r; +} + +static int read_ntp(DBusConnection *bus) { + DBusMessage *m = NULL, *reply = NULL; + const char *name = "ntpd.service", *s; + DBusError error; + int r; + + assert(bus); + + dbus_error_init(&error); + + m = dbus_message_new_method_call( + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "GetUnitFileState"); + + if (!m) { + log_error("Out of memory"); + r = -ENOMEM; + goto finish; + } + + if (!dbus_message_append_args(m, + DBUS_TYPE_STRING, &name, + DBUS_TYPE_INVALID)) { + log_error("Could not append arguments to message."); + r = -ENOMEM; + goto finish; + } + + reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error); + if (!reply) { + + if (streq(error.name, "org.freedesktop.DBus.Error.FileNotFound")) { + /* NTP is not installed. */ + tz.use_ntp = false; + r = 0; + goto finish; + } + + log_error("Failed to issue method call: %s", bus_error_message(&error)); + r = -EIO; + goto finish; + } + + if (!dbus_message_get_args(reply, &error, + DBUS_TYPE_STRING, &s, + DBUS_TYPE_INVALID)) { + log_error("Failed to parse reply: %s", bus_error_message(&error)); + r = -EIO; + goto finish; + } + + tz.use_ntp = + streq(s, "enabled") || + streq(s, "enabled-runtime"); + r = 0; + +finish: + if (m) + dbus_message_unref(m); + + if (reply) + dbus_message_unref(reply); + + dbus_error_free(&error); + + return r; +} + +static int start_ntp(DBusConnection *bus, DBusError *error) { + DBusMessage *m = NULL, *reply = NULL; + const char *name = "ntpd.service", *mode = "replace"; + int r; + + assert(bus); + assert(error); + + m = dbus_message_new_method_call( + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + tz.use_ntp ? "StartUnit" : "StopUnit"); + if (!m) { + log_error("Could not allocate message."); + r = -ENOMEM; + goto finish; + } + + if (!dbus_message_append_args(m, + DBUS_TYPE_STRING, &name, + DBUS_TYPE_STRING, &mode, + DBUS_TYPE_INVALID)) { + log_error("Could not append arguments to message."); + r = -ENOMEM; + goto finish; + } + + reply = dbus_connection_send_with_reply_and_block(bus, m, -1, error); + if (!reply) { + log_error("Failed to issue method call: %s", bus_error_message(error)); + r = -EIO; + goto finish; + } + + r = 0; + +finish: + if (m) + dbus_message_unref(m); + + if (reply) + dbus_message_unref(reply); + + return r; +} + +static int enable_ntp(DBusConnection *bus, DBusError *error) { + DBusMessage *m = NULL, *reply = NULL; + const char * const names[] = { "ntpd.service", NULL }; + int r; + DBusMessageIter iter; + dbus_bool_t f = FALSE, t = TRUE; + + assert(bus); + assert(error); + + m = dbus_message_new_method_call( + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + tz.use_ntp ? "EnableUnitFiles" : "DisableUnitFiles"); + + if (!m) { + log_error("Could not allocate message."); + r = -ENOMEM; + goto finish; + } + + dbus_message_iter_init_append(m, &iter); + + r = bus_append_strv_iter(&iter, (char**) names); + if (r < 0) { + log_error("Failed to append unit files."); + goto finish; + } + /* send runtime bool */ + if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &f)) { + log_error("Failed to append runtime boolean."); + r = -ENOMEM; + goto finish; + } + + if (tz.use_ntp) { + /* send force bool */ + if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &t)) { + log_error("Failed to append force boolean."); + r = -ENOMEM; + goto finish; + } + } + + reply = dbus_connection_send_with_reply_and_block(bus, m, -1, error); + if (!reply) { + log_error("Failed to issue method call: %s", bus_error_message(error)); + r = -EIO; + goto finish; + } + + dbus_message_unref(m); + m = dbus_message_new_method_call( + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "Reload"); + if (!m) { + log_error("Could not allocate message."); + r = -ENOMEM; + goto finish; + } + + dbus_message_unref(reply); + reply = dbus_connection_send_with_reply_and_block(bus, m, -1, error); + if (!reply) { + log_error("Failed to issue method call: %s", bus_error_message(error)); + r = -EIO; + goto finish; + } + + r = 0; + +finish: + if (m) + dbus_message_unref(m); + + if (reply) + dbus_message_unref(reply); + + return r; +} + +static int property_append_ntp(DBusMessageIter *i, const char *property, void *data) { + dbus_bool_t db; + + assert(i); + assert(property); + + db = tz.use_ntp > 0; + + if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &db)) + return -ENOMEM; + + return 0; +} + +static const BusProperty bus_timedate_properties[] = { + { "Timezone", bus_property_append_string, "s", offsetof(TZ, zone), true }, + { "LocalRTC", bus_property_append_bool, "b", offsetof(TZ, local_rtc) }, + { "NTP", property_append_ntp, "b", offsetof(TZ, use_ntp) }, + { NULL, } +}; + +static const BusBoundProperties bps[] = { + { "org.freedesktop.timedate1", bus_timedate_properties, &tz }, + { NULL, } +}; + +static DBusHandlerResult timedate_message_handler( + DBusConnection *connection, + DBusMessage *message, + void *userdata) { + + DBusMessage *reply = NULL, *changed = NULL; + DBusError error; + int r; + + assert(connection); + assert(message); + + dbus_error_init(&error); + + if (dbus_message_is_method_call(message, "org.freedesktop.timedate1", "SetTimezone")) { + const char *z; + dbus_bool_t interactive; + + if (!dbus_message_get_args( + message, + &error, + DBUS_TYPE_STRING, &z, + DBUS_TYPE_BOOLEAN, &interactive, + DBUS_TYPE_INVALID)) + return bus_send_error_reply(connection, message, &error, -EINVAL); + + if (!valid_timezone(z)) + return bus_send_error_reply(connection, message, NULL, -EINVAL); + + if (!streq_ptr(z, tz.zone)) { + char *t; + + r = verify_polkit(connection, message, "org.freedesktop.timedate1.set-timezone", interactive, NULL, &error); + if (r < 0) + return bus_send_error_reply(connection, message, &error, r); + + t = strdup(z); + if (!t) + goto oom; + + free(tz.zone); + tz.zone = t; + + /* 1. Write new configuration file */ + r = write_data_timezone(); + if (r < 0) { + log_error("Failed to set timezone: %s", strerror(-r)); + return bus_send_error_reply(connection, message, NULL, r); + } + + if (tz.local_rtc) { + struct timespec ts; + struct tm *tm; + + /* 2. Teach kernel new timezone */ + hwclock_apply_localtime_delta(NULL); + + /* 3. Sync RTC from system clock, with the new delta */ + assert_se(clock_gettime(CLOCK_REALTIME, &ts) == 0); + assert_se(tm = localtime(&ts.tv_sec)); + hwclock_set_time(tm); + } + + log_info("Changed timezone to '%s'.", tz.zone); + + changed = bus_properties_changed_new( + "/org/freedesktop/timedate1", + "org.freedesktop.timedate1", + "Timezone\0"); + if (!changed) + goto oom; + } + + } else if (dbus_message_is_method_call(message, "org.freedesktop.timedate1", "SetLocalRTC")) { + dbus_bool_t lrtc; + dbus_bool_t fix_system; + dbus_bool_t interactive; + + if (!dbus_message_get_args( + message, + &error, + DBUS_TYPE_BOOLEAN, &lrtc, + DBUS_TYPE_BOOLEAN, &fix_system, + DBUS_TYPE_BOOLEAN, &interactive, + DBUS_TYPE_INVALID)) + return bus_send_error_reply(connection, message, &error, -EINVAL); + + if (lrtc != tz.local_rtc) { + struct timespec ts; + + r = verify_polkit(connection, message, "org.freedesktop.timedate1.set-local-rtc", interactive, NULL, &error); + if (r < 0) + return bus_send_error_reply(connection, message, &error, r); + + tz.local_rtc = lrtc; + + /* 1. Write new configuration file */ + r = write_data_local_rtc(); + if (r < 0) { + log_error("Failed to set RTC to local/UTC: %s", strerror(-r)); + return bus_send_error_reply(connection, message, NULL, r); + } + + /* 2. Teach kernel new timezone */ + if (tz.local_rtc) + hwclock_apply_localtime_delta(NULL); + else + hwclock_reset_localtime_delta(); + + /* 3. Synchronize clocks */ + assert_se(clock_gettime(CLOCK_REALTIME, &ts) == 0); + + if (fix_system) { + struct tm tm; + + /* Sync system clock from RTC; first, + * initialize the timezone fields of + * struct tm. */ + if (tz.local_rtc) + tm = *localtime(&ts.tv_sec); + else + tm = *gmtime(&ts.tv_sec); + + /* Override the main fields of + * struct tm, but not the timezone + * fields */ + if (hwclock_get_time(&tm) >= 0) { + + /* And set the system clock + * with this */ + if (tz.local_rtc) + ts.tv_sec = mktime(&tm); + else + ts.tv_sec = timegm(&tm); + + clock_settime(CLOCK_REALTIME, &ts); + } + + } else { + struct tm *tm; + + /* Sync RTC from system clock */ + if (tz.local_rtc) + tm = localtime(&ts.tv_sec); + else + tm = gmtime(&ts.tv_sec); + + hwclock_set_time(tm); + } + + log_info("RTC configured to %s time.", tz.local_rtc ? "local" : "UTC"); + + changed = bus_properties_changed_new( + "/org/freedesktop/timedate1", + "org.freedesktop.timedate1", + "LocalRTC\0"); + if (!changed) + goto oom; + } + + } else if (dbus_message_is_method_call(message, "org.freedesktop.timedate1", "SetTime")) { + int64_t utc; + dbus_bool_t relative; + dbus_bool_t interactive; + + if (!dbus_message_get_args( + message, + &error, + DBUS_TYPE_INT64, &utc, + DBUS_TYPE_BOOLEAN, &relative, + DBUS_TYPE_BOOLEAN, &interactive, + DBUS_TYPE_INVALID)) + return bus_send_error_reply(connection, message, &error, -EINVAL); + + if (!relative && utc <= 0) + return bus_send_error_reply(connection, message, NULL, -EINVAL); + + if (!relative || utc != 0) { + struct timespec ts; + struct tm* tm; + + r = verify_polkit(connection, message, "org.freedesktop.timedate1.set-time", interactive, NULL, &error); + if (r < 0) + return bus_send_error_reply(connection, message, &error, r); + + if (relative) + timespec_store(&ts, now(CLOCK_REALTIME) + utc); + else + timespec_store(&ts, utc); + + /* Set system clock */ + if (clock_settime(CLOCK_REALTIME, &ts) < 0) { + log_error("Failed to set local time: %m"); + return bus_send_error_reply(connection, message, NULL, -errno); + } + + /* Sync down to RTC */ + if (tz.local_rtc) + tm = localtime(&ts.tv_sec); + else + tm = gmtime(&ts.tv_sec); + + hwclock_set_time(tm); + + log_info("Changed local time to %s", ctime(&ts.tv_sec)); + } + } else if (dbus_message_is_method_call(message, "org.freedesktop.timedate1", "SetNTP")) { + dbus_bool_t ntp; + dbus_bool_t interactive; + + if (!dbus_message_get_args( + message, + &error, + DBUS_TYPE_BOOLEAN, &ntp, + DBUS_TYPE_BOOLEAN, &interactive, + DBUS_TYPE_INVALID)) + return bus_send_error_reply(connection, message, &error, -EINVAL); + + if (ntp != !!tz.use_ntp) { + + r = verify_polkit(connection, message, "org.freedesktop.timedate1.set-ntp", interactive, NULL, &error); + if (r < 0) + return bus_send_error_reply(connection, message, &error, r); + + tz.use_ntp = !!ntp; + + r = enable_ntp(connection, &error); + if (r < 0) + return bus_send_error_reply(connection, message, &error, r); + + r = start_ntp(connection, &error); + if (r < 0) + return bus_send_error_reply(connection, message, &error, r); + + log_info("Set NTP to %s", tz.use_ntp ? "enabled" : "disabled"); + + changed = bus_properties_changed_new( + "/org/freedesktop/timedate1", + "org.freedesktop.timedate1", + "NTP\0"); + if (!changed) + goto oom; + } + + } else + return bus_default_message_handler(connection, message, INTROSPECTION, INTERFACES_LIST, bps); + + if (!(reply = dbus_message_new_method_return(message))) + goto oom; + + if (!dbus_connection_send(connection, reply, NULL)) + goto oom; + + dbus_message_unref(reply); + reply = NULL; + + if (changed) { + + if (!dbus_connection_send(connection, changed, NULL)) + goto oom; + + dbus_message_unref(changed); + } + + return DBUS_HANDLER_RESULT_HANDLED; + +oom: + if (reply) + dbus_message_unref(reply); + + if (changed) + dbus_message_unref(changed); + + dbus_error_free(&error); + + return DBUS_HANDLER_RESULT_NEED_MEMORY; +} + +static int connect_bus(DBusConnection **_bus) { + static const DBusObjectPathVTable timedate_vtable = { + .message_function = timedate_message_handler + }; + DBusError error; + DBusConnection *bus = NULL; + int r; + + assert(_bus); + + dbus_error_init(&error); + + bus = dbus_bus_get_private(DBUS_BUS_SYSTEM, &error); + if (!bus) { + log_error("Failed to get system D-Bus connection: %s", bus_error_message(&error)); + r = -ECONNREFUSED; + goto fail; + } + + dbus_connection_set_exit_on_disconnect(bus, FALSE); + + if (!dbus_connection_register_object_path(bus, "/org/freedesktop/timedate1", &timedate_vtable, NULL) || + !dbus_connection_add_filter(bus, bus_exit_idle_filter, &remain_until, NULL)) { + log_error("Not enough memory"); + r = -ENOMEM; + goto fail; + } + + r = dbus_bus_request_name(bus, "org.freedesktop.timedate1", DBUS_NAME_FLAG_DO_NOT_QUEUE, &error); + if (dbus_error_is_set(&error)) { + log_error("Failed to register name on bus: %s", bus_error_message(&error)); + r = -EEXIST; + goto fail; + } + + if (r != DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER) { + log_error("Failed to acquire name."); + r = -EEXIST; + goto fail; + } + + if (_bus) + *_bus = bus; + + return 0; + +fail: + dbus_connection_close(bus); + dbus_connection_unref(bus); + + dbus_error_free(&error); + + return r; +} + +int main(int argc, char *argv[]) { + int r; + DBusConnection *bus = NULL; + bool exiting = false; + + log_set_target(LOG_TARGET_AUTO); + log_parse_environment(); + log_open(); + + umask(0022); + + if (argc == 2 && streq(argv[1], "--introspect")) { + fputs(DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE + "<node>\n", stdout); + fputs(timedate_interface, stdout); + fputs("</node>\n", stdout); + return 0; + } + + if (argc != 1) { + log_error("This program takes no arguments."); + r = -EINVAL; + goto finish; + } + + r = read_data(); + if (r < 0) { + log_error("Failed to read timezone data: %s", strerror(-r)); + goto finish; + } + + r = connect_bus(&bus); + if (r < 0) + goto finish; + + r = read_ntp(bus); + if (r < 0) { + log_error("Failed to determine whether NTP is enabled: %s", strerror(-r)); + goto finish; + } + + remain_until = now(CLOCK_MONOTONIC) + DEFAULT_EXIT_USEC; + for (;;) { + + if (!dbus_connection_read_write_dispatch(bus, exiting ? -1 : (int) (DEFAULT_EXIT_USEC/USEC_PER_MSEC))) + break; + + if (!exiting && remain_until < now(CLOCK_MONOTONIC)) { + exiting = true; + bus_async_unregister_and_exit(bus, "org.freedesktop.hostname1"); + } + } + + r = 0; + +finish: + free_data(); + + if (bus) { + dbus_connection_flush(bus); + dbus_connection_close(bus); + dbus_connection_unref(bus); + } + + return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; +} |