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Date: Wed, 27 Apr 2005 22:29:34 -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: <20050428022934.GC31448@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> <20050427222031 DOT GB24021 AT trixie DOT casa DOT cgf DOT cx> <u4qdrbxhi DOT fsf AT gnu DOT org>
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On Wed, Apr 27, 2005 at 07:39:37PM -0400, Sam Steingold wrote:
>> * Christopher Faylor <pts-ab-crefbany-ercyl-cyrnfr AT pltjva DOT pbz> [2005-04-27 18:20:31 -0400]:
>>
>> 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.
>
>Yes, it appears that they are heavily broken.

So when I say "fifos just barely work" you felt the need to inform me that
they don't work?  And that advances the discussion how, exactly?

cgf

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