Handle unsigned struct timeval members
authorMatt Caswell <matt@openssl.org>
Mon, 25 May 2015 22:57:41 +0000 (23:57 +0100)
committerMatt Caswell <matt@openssl.org>
Tue, 26 May 2015 09:38:56 +0000 (10:38 +0100)
The members of struct timeval on OpenVMS are unsigned. The logic for
calculating timeouts needs adjusting to deal with this.

RT#3862

Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit fc52ac9028b9492fb086ba35a3352ea46e03ecfc)

crypto/bio/bss_dgram.c

index ac03a6d..dc4479f 100644 (file)
@@ -303,16 +303,17 @@ static void dgram_adjust_rcv_timeout(BIO *b)
 
         /* Calculate time left until timer expires */
         memcpy(&timeleft, &(data->next_timeout), sizeof(struct timeval));
-        timeleft.tv_sec -= timenow.tv_sec;
-        timeleft.tv_usec -= timenow.tv_usec;
-        if (timeleft.tv_usec < 0) {
+        if (timeleft.tv_usec < timenow.tv_usec) {
+            timeleft.tv_usec = 1000000 - timenow.tv_usec + timeleft.tv_usec;
             timeleft.tv_sec--;
-            timeleft.tv_usec += 1000000;
+        } else {
+            timeleft.tv_usec -= timenow.tv_usec;
         }
-
-        if (timeleft.tv_sec < 0) {
+        if (timeleft.tv_sec < timenow.tv_sec) {
             timeleft.tv_sec = 0;
             timeleft.tv_usec = 1;
+        } else {
+            timeleft.tv_sec -= timenow.tv_sec;
         }
 
         /*