From owner-freebsd-hackers@FreeBSD.ORG  Wed Nov 19 19:07:02 2014
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
Delivered-To: freebsd-hackers@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id ED0107EC
 for <freebsd-hackers@freebsd.org>; Wed, 19 Nov 2014 19:07:02 +0000 (UTC)
Received: from mail-ie0-x244.google.com (mail-ie0-x244.google.com
 [IPv6:2607:f8b0:4001:c03::244])
 (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits))
 (Client CN "smtp.gmail.com",
 Issuer "Google Internet Authority G2" (verified OK))
 by mx1.freebsd.org (Postfix) with ESMTPS id B86C932F
 for <freebsd-hackers@freebsd.org>; Wed, 19 Nov 2014 19:07:02 +0000 (UTC)
Received: by mail-ie0-f196.google.com with SMTP id rp18so176726iec.11
 for <freebsd-hackers@freebsd.org>; Wed, 19 Nov 2014 11:07:02 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113;
 h=mime-version:date:message-id:subject:from:to:content-type;
 bh=3BocN1Zgh427yXk/yC5TrfsnfZbnrqqxhN/wdquHA9o=;
 b=uASI8LJoVuOTHSiLAMW8FoZIcSVbmlH/VH1Z3y74XSkdoJiv1KaR1opJ4dKyRt5gHe
 BtPADHSWSu9l9wgzhLjVHPOp1EBGlp/D9ye/YAtMHSuktUwfWfRVsJ8k4GTK8vMWWoBO
 jnaqM3YGG0XfxHbPCPF7yik9utpnB3pJbAOyDnTMHeSr5soV0uGAt5IiWolaCIfVoqaV
 Bhw+wh2eOp0pd6aHtDxHnu7agQax/jsVjhq/AG5d/xOr5erMi3j+scmG71gYc2TElU1z
 uHammjG5Yex7yxhDCz8LNKkq3T9UZ3f3558VpfXEj5uAxlu58XDQxWaC8uaPN/u3YvMK
 4oPA==
MIME-Version: 1.0
X-Received: by 10.50.164.226 with SMTP id yt2mr12102992igb.22.1416424022155;
 Wed, 19 Nov 2014 11:07:02 -0800 (PST)
Received: by 10.64.147.164 with HTTP; Wed, 19 Nov 2014 11:07:02 -0800 (PST)
Date: Wed, 19 Nov 2014 11:07:02 -0800
Message-ID: <CAA3ZYrAcCRwb+8pWjmeGS9gaE7MS43Jjx17oFkLF8oGJYgCOnw@mail.gmail.com>
Subject: Re: Running 8 building 10 gives "Out of file descriptors" ?
From: Dieter BSD <dieterbsd@gmail.com>
To: freebsd-hackers@freebsd.org
Content-Type: text/plain; charset=ISO-8859-1
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.18-1
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: Wed, 19 Nov 2014 19:07:03 -0000

        if (fd < 10) {
                fd2 = fcntl(fd, F_DUPFD_CLOEXEC, 10);
                close(fd);
                if (fd2 < 0)
                  {
                    int limit;
                    limit = getdtablesize();
                    fprintf(stderr, "sh: setinputfile(): fcntl() returned %d ge\
tdtablesize() returned %d\n", fd2, limit);
                    perror("sh: fcntl(F_DUPFD_CLOEXEC) failed:");
                        error("sh: Out of file descriptors?");
                  }
                fd = fd2;
        }

Result:
sh: setinputfile(): fcntl() returned -1 getdtablesize() returned 11095
sh: fcntl(F_DUPFD_CLOEXEC) failed:: Invalid argument
sh: Out of file descriptors?

find /usr/include/ | xargs grep F_DUPFD_CLOEXEC
gives no hits in 8.2, but
/usr/include/sys/fcntl.h:
/new/freebsd/usr/include/fcntl.h:
#define    F_DUPFD_CLOEXEC 17         /* Like F_DUPFD, but FD_CLOEXEC is set */
in 10.1

So, F_DUPFD_CLOEXEC was added after 8.2, and someone changed sh to
use it, but couldn't be bothered to fix the error message.

If someone would like to fix this, they don't need to build a toolchain,
they can use a 2 line script:

#!/bin/sh
echo Hello, World!

So Ian, how did you avoid running into this problem?