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To:	cygwin AT cygwin DOT com
Subject:	Re: mkstemp bug
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Reply-To:	sds AT gnu DOT org
X-Attribution:	Sam
X-Disclaimer:	You should not expect anyone to agree with me.
From:	Sam Steingold <sds AT gnu DOT org>
In-Reply-To:	<usm1cb0aa.fsf@gnu.org> (Sam Steingold's message of "Wed, 27 Apr 2005 13:24:29 -0400")
References:	<usm1cb0aa DOT fsf AT gnu DOT org>
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Date:	Wed, 27 Apr 2005 18:06:09 -0400
Message-ID:	<u8y33c1ta.fsf@gnu.org>
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> * 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

-- 
Sam Steingold (http://www.podval.org/~sds) running w2k
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