From owner-svn-src-all@FreeBSD.ORG  Tue Jan 21 08:24:13 2014
Return-Path: <owner-svn-src-all@FreeBSD.ORG>
Delivered-To: svn-src-all@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id 0A8755F1;
 Tue, 21 Jan 2014 08:24:13 +0000 (UTC)
Received: from svn.freebsd.org (svn.freebsd.org
 [IPv6:2001:1900:2254:2068::e6a:0])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (No client certificate requested)
 by mx1.freebsd.org (Postfix) with ESMTPS id EA118101F;
 Tue, 21 Jan 2014 08:24:12 +0000 (UTC)
Received: from svn.freebsd.org ([127.0.1.70])
 by svn.freebsd.org (8.14.7/8.14.7) with ESMTP id s0L8OC4F058542;
 Tue, 21 Jan 2014 08:24:12 GMT
 (envelope-from hselasky@svn.freebsd.org)
Received: (from hselasky@localhost)
 by svn.freebsd.org (8.14.7/8.14.7/Submit) id s0L8OC83058541;
 Tue, 21 Jan 2014 08:24:12 GMT
 (envelope-from hselasky@svn.freebsd.org)
Message-Id: <201401210824.s0L8OC83058541@svn.freebsd.org>
From: Hans Petter Selasky <hselasky@FreeBSD.org>
Date: Tue, 21 Jan 2014 08:24:12 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
 svn-src-head@freebsd.org
Subject: svn commit: r260978 - head/usr.sbin/usbdump
X-SVN-Group: head
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
X-BeenThere: svn-src-all@freebsd.org
X-Mailman-Version: 2.1.17
Precedence: list
List-Id: "SVN commit messages for the entire src tree \(except for &quot;
 user&quot; and &quot; projects&quot; \)" <svn-src-all.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/svn-src-all>,
 <mailto:svn-src-all-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-all/>
List-Post: <mailto:svn-src-all@freebsd.org>
List-Help: <mailto:svn-src-all-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-all>,
 <mailto:svn-src-all-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 21 Jan 2014 08:24:13 -0000

Author: hselasky
Date: Tue Jan 21 08:24:12 2014
New Revision: 260978
URL: http://svnweb.freebsd.org/changeset/base/260978

Log:
  Add check for "hw.usb.no_pf" sysctl value.
  
  Submitted by:	Warren Block <wblock@wonkity.com>
  MFC after:	1 week

Modified:
  head/usr.sbin/usbdump/usbdump.c

Modified: head/usr.sbin/usbdump/usbdump.c
==============================================================================
--- head/usr.sbin/usbdump/usbdump.c	Tue Jan 21 05:56:35 2014	(r260977)
+++ head/usr.sbin/usbdump/usbdump.c	Tue Jan 21 08:24:12 2014	(r260978)
@@ -34,6 +34,7 @@
 #include <sys/ioctl.h>
 #include <sys/socket.h>
 #include <sys/stat.h>
+#include <sys/sysctl.h>
 #include <sys/utsname.h>
 #include <sys/queue.h>
 #include <net/if.h>
@@ -780,6 +781,23 @@ usage(void)
 	exit(EX_USAGE);
 }
 
+static void
+check_usb_pf_sysctl(void)
+{
+	int error;
+	int no_pf_val = 0;
+	size_t no_pf_len = sizeof(int);
+
+	/* check "hw.usb.no_pf" sysctl for 8- and 9- stable */
+
+	error = sysctlbyname("hw.usb.no_pf", &no_pf_val,
+	    &no_pf_len, NULL, 0);
+	if (error == 0 && no_pf_val != 0) {
+		warnx("The USB packet filter might be disabled.");
+		warnx("See the \"hw.usb.no_pf\" sysctl for more information.");
+	}
+}
+
 int
 main(int argc, char *argv[])
 {
@@ -872,6 +890,8 @@ main(int argc, char *argv[])
 		exit(EXIT_SUCCESS);
 	}
 
+	check_usb_pf_sysctl();
+
 	p->fd = fd = open("/dev/bpf", O_RDONLY);
 	if (p->fd < 0)
 		err(EXIT_FAILURE, "Could not open BPF device");