Fastbootd: network auto discovery
Change-Id: I91082f5832412e775244b3974c0ab00952905ad5
diff --git a/fastbootd/utils.c b/fastbootd/utils.c
index cac5509..22f5775 100644
--- a/fastbootd/utils.c
+++ b/fastbootd/utils.c
@@ -35,6 +35,7 @@
#include <sys/ioctl.h>
#include <linux/fs.h>
#include <stdlib.h>
+#include <cutils/properties.h>
#include "utils.h"
#include "debug.h"
@@ -204,3 +205,52 @@
return n;
}
+#define NAP_TIME 200 // 200 ms between polls
+static int wait_for_property(const char *name, const char *desired_value, int maxwait)
+{
+ char value[PROPERTY_VALUE_MAX] = {'\0'};
+ int maxnaps = (maxwait * 1000) / NAP_TIME;
+
+ if (maxnaps < 1) {
+ maxnaps = 1;
+ }
+
+ while (maxnaps-- > 0) {
+ usleep(NAP_TIME * 1000);
+ if (property_get(name, value, NULL)) {
+ if (desired_value == NULL || strcmp(value, desired_value) == 0) {
+ return 0;
+ }
+ }
+ }
+ return -1; /* failure */
+}
+
+int service_start(const char *service_name)
+{
+ int result = 0;
+ char property_value[PROPERTY_VALUE_MAX];
+
+ property_get(service_name, property_value, "");
+ if (strcmp("running", property_value) != 0) {
+ D(INFO, "Starting MDNSD");
+ property_set("ctl.start", service_name);
+ if (wait_for_property(service_name, "running", 5))
+ result = -1;
+ }
+
+ return result;
+}
+
+int service_stop(const char *service_name)
+{
+ int result = 0;
+
+ D(INFO, "Stopping MDNSD");
+ property_set("ctl.stop", service_name);
+ if (wait_for_property(service_name, "stopped", 5))
+ result = -1;
+
+ return result;
+}
+