rtcwake : add disable action for rtc alarm

Signed-off-by: Karel Zak <kzak@redhat.com>

diff --git a/sys-utils/rtcwake.c b/sys-utils/rtcwake.c
index 83a5d10ec302cac98c1b87d2fcff366e16f54d9f..265113069ad6717b707ddaa01f89733bc6a8328d 100644 (file)
--- a/sys-utils/rtcwake.c
+++ b/sys-utils/rtcwake.c
@@ -344,6 +344,7 @@ int main(int argc, char **argv)
                                        || strcmp(optarg, "on") == 0
                                        || strcmp(optarg, "no") == 0
                                        || strcmp(optarg, "off") == 0
+                                       || strcmp(optarg, "disable") == 0
                           ) {
                                suspend = strdup(optarg);
                                break;
@@ -413,7 +414,7 @@ int main(int argc, char **argv)
                printf(clock_mode == CM_UTC ? _("Using UTC time.\n") :
                                _("Using local time.\n"));
 
-       if (!alarm && !seconds) {
+       if (!alarm && !seconds && strcmp(suspend,"disable")) {
                fprintf(stderr, _("%s: must provide wake time\n"), progname);
                usage(EXIT_FAILURE);
        }
@@ -522,6 +523,10 @@ int main(int argc, char **argv)
                        } while (!(data & RTC_AF));
                }
 
+       } else if (strcmp(suspend, "disable") == 0) {
+               /* just break, alarm gets disabled in the end */
+               if (verbose)
+                       printf(_("suspend mode: disable; disabling alarm\n"));
        } else {
                if (verbose)
                        printf(_("suspend mode: %s; suspending system\n"), suspend);