Date: Tue, 28 Jan 2014 07:09:48 +0000 (UTC) From: Hans Petter Selasky <hselasky@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org Subject: svn commit: r261222 - stable/9/usr.sbin/usbdump Message-ID: <201401280709.s0S79m5s040468@svn.freebsd.org>
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Author: hselasky Date: Tue Jan 28 07:09:48 2014 New Revision: 261222 URL: http://svnweb.freebsd.org/changeset/base/261222 Log: MFC r260978: Add check for "hw.usb.no_pf" sysctl value. Modified: stable/9/usr.sbin/usbdump/usbdump.c Directory Properties: stable/9/usr.sbin/ (props changed) stable/9/usr.sbin/usbdump/ (props changed) Modified: stable/9/usr.sbin/usbdump/usbdump.c ============================================================================== --- stable/9/usr.sbin/usbdump/usbdump.c Tue Jan 28 03:09:57 2014 (r261221) +++ stable/9/usr.sbin/usbdump/usbdump.c Tue Jan 28 07:09:48 2014 (r261222) @@ -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[]) { @@ -870,6 +888,8 @@ 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");
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