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-rw-r--r--src/libsystemd/sd-event/event-util.c99
1 files changed, 99 insertions, 0 deletions
diff --git a/src/libsystemd/sd-event/event-util.c b/src/libsystemd/sd-event/event-util.c
new file mode 100644
index 0000000..43e73d5
--- /dev/null
+++ b/src/libsystemd/sd-event/event-util.c
@@ -0,0 +1,99 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+
+#include <errno.h>
+
+#include "event-source.h"
+#include "event-util.h"
+#include "log.h"
+#include "string-util.h"
+
+int event_reset_time(
+ sd_event *e,
+ sd_event_source **s,
+ clockid_t clock,
+ uint64_t usec,
+ uint64_t accuracy,
+ sd_event_time_handler_t callback,
+ void *userdata,
+ int64_t priority,
+ const char *description,
+ bool force_reset) {
+
+ bool created = false;
+ int enabled, r;
+ clockid_t c;
+
+ assert(e);
+ assert(s);
+
+ if (*s) {
+ if (!force_reset) {
+ r = sd_event_source_get_enabled(*s, &enabled);
+ if (r < 0)
+ return log_debug_errno(r, "sd-event: Failed to query whether event source \"%s\" is enabled or not: %m",
+ strna((*s)->description ?: description));
+
+ if (enabled != SD_EVENT_OFF)
+ return 0;
+ }
+
+ r = sd_event_source_get_time_clock(*s, &c);
+ if (r < 0)
+ return log_debug_errno(r, "sd-event: Failed to get clock id of event source \"%s\": %m", strna((*s)->description ?: description));
+
+ if (c != clock)
+ return log_debug_errno(SYNTHETIC_ERRNO(EINVAL),
+ "sd-event: Current clock id %i of event source \"%s\" is different from specified one %i.",
+ (int)c,
+ strna((*s)->description ? : description),
+ (int)clock);
+
+ r = sd_event_source_set_time(*s, usec);
+ if (r < 0)
+ return log_debug_errno(r, "sd-event: Failed to set time for event source \"%s\": %m", strna((*s)->description ?: description));
+
+ r = sd_event_source_set_time_accuracy(*s, accuracy);
+ if (r < 0)
+ return log_debug_errno(r, "sd-event: Failed to set accuracy for event source \"%s\": %m", strna((*s)->description ?: description));
+
+ /* callback function is not updated, as we do not have sd_event_source_set_time_callback(). */
+
+ (void) sd_event_source_set_userdata(*s, userdata);
+
+ r = sd_event_source_set_enabled(*s, SD_EVENT_ONESHOT);
+ if (r < 0)
+ return log_debug_errno(r, "sd-event: Failed to enable event source \"%s\": %m", strna((*s)->description ?: description));
+ } else {
+ r = sd_event_add_time(e, s, clock, usec, accuracy, callback, userdata);
+ if (r < 0)
+ return log_debug_errno(r, "sd-event: Failed to create timer event \"%s\": %m", strna(description));
+
+ created = true;
+ }
+
+ r = sd_event_source_set_priority(*s, priority);
+ if (r < 0)
+ return log_debug_errno(r, "sd-event: Failed to set priority for event source \"%s\": %m", strna((*s)->description ?: description));
+
+ if (description) {
+ r = sd_event_source_set_description(*s, description);
+ if (r < 0)
+ return log_debug_errno(r, "sd-event: Failed to set description for event source \"%s\": %m", description);
+ }
+
+ return created;
+}
+
+int event_source_disable(sd_event_source *s) {
+ if (!s)
+ return 0;
+
+ return sd_event_source_set_enabled(s, SD_EVENT_OFF);
+}
+
+int event_source_is_enabled(sd_event_source *s) {
+ if (!s)
+ return false;
+
+ return sd_event_source_get_enabled(s, NULL);
+}