From owner-freebsd-hackers@FreeBSD.ORG  Fri Apr 18 16:12:07 2014
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
Delivered-To: hackers@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115])
 (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id 3B0CF5DA
 for <hackers@freebsd.org>; Fri, 18 Apr 2014 16:12:07 +0000 (UTC)
Received: from sunner.semmy.ru (sunner.semmy.ru [IPv6:2a00:14d0:0:20::3])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id ECB0711DE
 for <hackers@freebsd.org>; Fri, 18 Apr 2014 16:12:06 +0000 (UTC)
Received: from 95.108.170.111-red.dhcp.yndx.net ([95.108.170.111])
 by sunner.semmy.ru with esmtpsa (TLSv1:DHE-RSA-AES128-SHA:128)
 (Exim 4.82 (FreeBSD)) (envelope-from <sem@semmy.ru>)
 id 1WbBOU-0009kq-3c
 for hackers@freebsd.org; Fri, 18 Apr 2014 20:12:02 +0400
Message-ID: <53514ED2.2060904@semmy.ru>
Date: Fri, 18 Apr 2014 20:12:02 +0400
From: Sergey Matveychuk <sem@semmy.ru>
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64;
 rv:24.0) Gecko/20100101 Thunderbird/24.4.0
MIME-Version: 1.0
To: hackers@freebsd.org
Subject: statfs(2)
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
X-Mailman-Approved-At: Fri, 18 Apr 2014 16:35:29 +0000
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.17
Precedence: list
List-Id: Technical Discussions relating to FreeBSD
 <freebsd-hackers.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-hackers>, 
 <mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers/>
List-Post: <mailto:freebsd-hackers@freebsd.org>
List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
 <mailto:freebsd-hackers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 18 Apr 2014 16:12:07 -0000

Hi.

Tell me please, why f_bfree is unsigned and f_bavail is signed?

struct statfs {
  ...
  uint64_t f_bfree;             /* free blocks in filesystem */
  int64_t  f_bavail;            /* free blocks avail to non-superuser */
  ...