core/manager: print info about interesting signals

[elogind.git] / src / timedate / timedatectl.c

diff --git a/src/timedate/timedatectl.c b/src/timedate/timedatectl.c
index 461540e89b4db5b656bc3808e02257429264129d..2c24b78458b367da5c0318f88be2c04129d108e7 100644 (file)
--- a/src/timedate/timedatectl.c
+++ b/src/timedate/timedatectl.c
@@ -58,6 +58,9 @@ static void polkit_agent_open_if_enabled(void) {
         if (!arg_ask_password)
                 return;
 
+        if (arg_transport != BUS_TRANSPORT_LOCAL)
+                return;
+
         polkit_agent_open();
 }
 
@@ -95,6 +98,7 @@ static void print_status_info(const StatusInfo *i) {
         char s[32];
         struct tm tm;
         time_t sec;
+        bool have_time = false;
         char *zc, *zn;
         time_t t, tc, tn;
         int dn;
@@ -109,17 +113,29 @@ static void print_status_info(const StatusInfo *i) {
                 unsetenv("TZ");
         }
 
-        sec = (time_t) (i->time / USEC_PER_SEC);
+        if (i->time != 0) {
+                sec = (time_t) (i->time / USEC_PER_SEC);
+                have_time = true;
+        } else if (arg_transport == BUS_TRANSPORT_LOCAL) {
+                sec = time(NULL);
+                have_time = true;
+        } else
+                fprintf(stderr, "Warning: could not get time from timedated and not operating locally.\n\n");
 
-        zero(tm);
-        assert_se(strftime(a, sizeof(a), "%a %Y-%m-%d %H:%M:%S %Z", localtime_r(&sec, &tm)) > 0);
-        char_array_0(a);
-        printf("      Local time: %s\n", a);
+        if (have_time) {
+                zero(tm);
+                assert_se(strftime(a, sizeof(a), "%a %Y-%m-%d %H:%M:%S %Z", localtime_r(&sec, &tm)) > 0);
+                char_array_0(a);
+                printf("      Local time: %s\n", a);
 
-        zero(tm);
-        assert_se(strftime(a, sizeof(a), "%a %Y-%m-%d %H:%M:%S UTC", gmtime_r(&sec, &tm)) > 0);
-        char_array_0(a);
-        printf("  Universal time: %s\n", a);
+                zero(tm);
+                assert_se(strftime(a, sizeof(a), "%a %Y-%m-%d %H:%M:%S UTC", gmtime_r(&sec, &tm)) > 0);
+                char_array_0(a);
+                printf("  Universal time: %s\n", a);
+        } else {
+                printf("      Local time: %s\n", "n/a");
+                printf("  Universal time: %s\n", "n/a");
+        }
 
         if (i->rtc_time > 0) {
                 time_t rtc_sec;
@@ -130,7 +146,7 @@ static void print_status_info(const StatusInfo *i) {
                 char_array_0(a);
                 printf("        RTC time: %s\n", a);
         } else
-                printf("        RTC time: n/a\n");
+                printf("        RTC time: %s\n", "n/a");
 
         zero(tm);
         assert_se(strftime(a, sizeof(a), "%Z, %z", localtime_r(&sec, &tm)) > 0);
@@ -148,8 +164,8 @@ static void print_status_info(const StatusInfo *i) {
                          &tc, &zc, &is_dstc,
                          &tn, &dn, &zn, &is_dstn);
         if (r < 0)
-                printf("      DST active: n/a\n");
-        else {
+                printf("      DST active: %s\n", "n/a");
+        else if (have_time) {
                 printf("      DST active: %s\n", yes_no(is_dstc));
 
                 t = tc - 1;
@@ -180,7 +196,8 @@ static void print_status_info(const StatusInfo *i) {
 
                 free(zc);
                 free(zn);
-        }
+        } else
+                printf("      DST active: %s\n", yes_no(is_dstc));
 
         if (i->rtc_local)
                 fputs("\n" ANSI_HIGHLIGHT_ON
@@ -191,7 +208,6 @@ static void print_status_info(const StatusInfo *i) {
 }
 
 static int show_status(sd_bus *bus, char **args, unsigned n) {
-        _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
         StatusInfo info = {};
         static const struct bus_properties_map map[]  = {
                 { "Timezone",        "s", NULL, offsetof(StatusInfo, timezone) },
@@ -212,8 +228,10 @@ static int show_status(sd_bus *bus, char **args, unsigned n) {
                                    "/org/freedesktop/timedate1",
                                    map,
                                    &info);
-        if (r < 0)
+        if (r < 0) {
+                log_error("Failed to query server: %s", strerror(-r));
                 goto fail;
+        }
 
         print_status_info(&info);
 
@@ -408,21 +426,20 @@ static int help(void) {
 
         printf("%s [OPTIONS...] COMMAND ...\n\n"
                "Query or change system time and date settings.\n\n"
-               "  -h --help              Show this help\n"
-               "     --version           Show package version\n"
-               "     --adjust-system-clock\n"
-               "                         Adjust system clock when changing local RTC mode\n"
-               "     --no-pager          Do not pipe output into a pager\n"
-               "     --no-ask-password   Do not prompt for password\n"
-               "  -H --host=[USER@]HOST  Operate on remote host\n"
-               "  -M --machine=CONTAINER Operate on local container\n\n"
+               "  -h --help                Show this help\n"
+               "     --version             Show package version\n"
+               "     --no-pager            Do not pipe output into a pager\n"
+               "     --no-ask-password     Do not prompt for password\n"
+               "  -H --host=[USER@]HOST    Operate on remote host\n"
+               "  -M --machine=CONTAINER   Operate on local container\n"
+               "     --adjust-system-clock Adjust system clock when changing local RTC mode\n\n"
                "Commands:\n"
-               "  status                 Show current time settings\n"
-               "  set-time TIME          Set system time\n"
-               "  set-timezone ZONE      Set system timezone\n"
-               "  list-timezones         Show known timezones\n"
-               "  set-local-rtc BOOL     Control whether RTC is in local time\n"
-               "  set-ntp BOOL           Control whether NTP is enabled\n",
+               "  status                   Show current time settings\n"
+               "  set-time TIME            Set system time\n"
+               "  set-timezone ZONE        Set system timezone\n"
+               "  list-timezones           Show known timezones\n"
+               "  set-local-rtc BOOL       Control whether RTC is in local time\n"
+               "  set-ntp BOOL             Control whether NTP is enabled\n",
                program_invocation_short_name);
 
         return 0;
@@ -445,7 +462,7 @@ static int parse_argv(int argc, char *argv[]) {
                 { "machine",             required_argument, NULL, 'M'                     },
                 { "no-ask-password",     no_argument,       NULL, ARG_NO_ASK_PASSWORD     },
                 { "adjust-system-clock", no_argument,       NULL, ARG_ADJUST_SYSTEM_CLOCK },
-                { NULL,                  0,                 NULL, 0                       }
+                {}
         };
 
         int c;
@@ -458,8 +475,7 @@ static int parse_argv(int argc, char *argv[]) {
                 switch (c) {
 
                 case 'h':
-                        help();
-                        return 0;
+                        return help();
 
                 case ARG_VERSION:
                         puts(PACKAGE_STRING);
@@ -492,8 +508,7 @@ static int parse_argv(int argc, char *argv[]) {
                         return -EINVAL;
 
                 default:
-                        log_error("Unknown option code %c", c);
-                        return -EINVAL;
+                        assert_not_reached("Unhandled option");
                 }
         }
 
@@ -581,33 +596,27 @@ static int timedatectl_main(sd_bus *bus, int argc, char *argv[]) {
 }
 
 int main(int argc, char *argv[]) {
-        int r, ret = EXIT_FAILURE;
         _cleanup_bus_unref_ sd_bus *bus = NULL;
+        int r;
 
         setlocale(LC_ALL, "");
         log_parse_environment();
         log_open();
 
         r = parse_argv(argc, argv);
-        if (r < 0)
-                goto finish;
-        else if (r == 0) {
-                ret = EXIT_SUCCESS;
+        if (r <= 0)
                 goto finish;
-        }
 
         r = bus_open_transport(arg_transport, arg_host, false, &bus);
         if (r < 0) {
                 log_error("Failed to create bus connection: %s", strerror(-r));
-                ret = EXIT_FAILURE;
                 goto finish;
         }
 
         r = timedatectl_main(bus, argc, argv);
-        ret = r < 0 ? EXIT_FAILURE : r;
 
 finish:
         pager_close();
 
-        return ret;
+        return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
 }