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From: John Baldwin <jhb@FreeBSD.org>
Date: Wed, 13 Nov 2013 17:08:37 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
 svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org
Subject: svn commit: r258099 - stable/9/sys/kern
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Author: jhb
Date: Wed Nov 13 17:08:37 2013
New Revision: 258099
URL: http://svnweb.freebsd.org/changeset/base/258099

Log:
  MFC 254699,255030:
  Use tvtohz() to convert a socket buffer timeout to a tick value rather
  than using a home-rolled version.  The home-rolled version could result
  in shorter-than-requested sleeps.
  
  PR:		kern/181416

Modified:
  stable/9/sys/kern/uipc_socket.c
Directory Properties:
  stable/9/sys/   (props changed)

Modified: stable/9/sys/kern/uipc_socket.c
==============================================================================
--- stable/9/sys/kern/uipc_socket.c	Wed Nov 13 17:06:26 2013	(r258098)
+++ stable/9/sys/kern/uipc_socket.c	Wed Nov 13 17:08:37 2013	(r258099)
@@ -2654,22 +2654,12 @@ sosetopt(struct socket *so, struct socko
 				    sizeof tv);
 			if (error)
 				goto bad;
-
-			/* assert(hz > 0); */
-			if (tv.tv_sec < 0 || tv.tv_sec > INT_MAX / hz ||
-			    tv.tv_usec < 0 || tv.tv_usec >= 1000000) {
-				error = EDOM;
-				goto bad;
-			}
-			/* assert(tick > 0); */
-			/* assert(ULONG_MAX - INT_MAX >= 1000000); */
-			val = (u_long)(tv.tv_sec * hz) + tv.tv_usec / tick;
-			if (val > INT_MAX) {
+			if (tv.tv_sec < 0 || tv.tv_usec < 0 ||
+			    tv.tv_usec >= 1000000) {
 				error = EDOM;
 				goto bad;
 			}
-			if (val == 0 && tv.tv_usec != 0)
-				val = 1;
+			val = tvtohz(&tv);
 
 			switch (sopt->sopt_name) {
 			case SO_SNDTIMEO: