kern/175883: Add support for SCM_BINTIME for PF_LOCAL sockets

[Andrey Simonenko]

>Number:         175883
>Category:       kern
>Synopsis:       Add support for SCM_BINTIME for PF_LOCAL sockets
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          change-request
>Submitter-Id:   current-users
>Arrival-Date:   Wed Feb 06 12:30:00 UTC 2013
>Closed-Date:
>Last-Modified:
>Originator:     Andrey Simonenko
>Release:        FreeBSD 10-CURRENT
>Organization:
>Environment:
>Description:

The following change adds support of SCM_BINTIME ancillary data object for
PF_LOCAL sockets.  The style of the following change follows the style of
SCM_TIMESTAMP support.

>How-To-Repeat:
>Fix:
--- uipc_usrreq.c.orig	2012-12-10 13:20:29.000000000 +0200
+++ uipc_usrreq.c	2013-02-06 13:53:03.000000000 +0200
@@ -1802,6 +1802,7 @@ unp_internalize(struct mbuf **controlp, 
 	struct cmsgcred *cmcred;
 	struct file **rp;
 	struct file *fp;
+	struct bintime *bt;
 	struct timeval *tv;
 	int i, fd, *fdp;
 	void *data;
@@ -1906,6 +1907,18 @@ unp_internalize(struct mbuf **controlp, 
 			microtime(tv);
 			break;
 
+		case SCM_BINTIME:
+			*controlp = sbcreatecontrol(NULL, sizeof(*bt),
+			    SCM_BINTIME, SOL_SOCKET);
+			if (*controlp == NULL) {
+				error = ENOBUFS;
+				goto out;
+			}
+			bt = (struct bintime *)
+			    CMSG_DATA(mtod(*controlp, struct cmsghdr *));
+			bintime(bt);
+			break;
+
 		default:
 			error = EINVAL;
 			goto out;

>Release-Note:
>Audit-Trail:
>Unformatted: