Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Subscribe: <mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive: <http://sourceware.org/ml/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender: cygwin-owner AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
Delivered-To: mailing list cygwin AT cygwin DOT com
Date: Wed, 27 Apr 2005 18:20:31 -0400
From: Christopher Faylor <cgf-no-personal-reply-please AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: mkstemp bug
Message-ID: <20050427222031.GB24021@trixie.casa.cgf.cx>
Reply-To: cygwin AT cygwin DOT com
References: <usm1cb0aa DOT fsf AT gnu DOT org> <u8y33c1ta DOT fsf AT gnu DOT org>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <u8y33c1ta.fsf@gnu.org>
User-Agent: Mutt/1.5.8i

On Wed, Apr 27, 2005 at 06:06:09PM -0400, Sam Steingold wrote:
>> * Sam Steingold <fqf AT tah DOT bet> [2005-04-27 13:24:29 -0400]:
>>
>> it appears that mkstemp() returns a temp FD pointing to the same file:
>> mkstemp ("/tmp/clisp-x-io-XXXXXX");
>> ==> "/tmp/clisp-x-io-000592"
>> mkstemp ("/tmp/clisp-x-io-XXXXXX");
>> ==> "/tmp/clisp-x-io-000592"
>> mkstemp ("/tmp/clisp-x-io-XXXXXX");
>> ==> "/tmp/clisp-x-io-000592"
>
>this is note quite as easy to reproduce.  sorry.
>
>the problem is that mkstemp() does not regard FIFOs (as created by
>mkfifo() or mknod()) as existing files.
>
>e.g.
>
>  char s1[] = "/tmp/foo-XXXXXX";
>  char s2[] = "/tmp/foo-XXXXXX";
>  int fd = mkstemp(s1);
>  close(fd); remove(s1);
>  mkfifo(s1,0644);
>  mkstemp(s2);
>  strcmp(s1,s2) ===> 0

fifos just barely work under cygwin.  I wouldn't recommend using them.

cgf

--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/