Re: mkstemp bug

[Christopher Faylor <cgf-no-personal-reply-please at cygwin dot com>]

On Wed, Apr 27, 2005 at 06:06:09PM -0400, Sam Steingold wrote:
>> * Sam Steingold <fqf@tah.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

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