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Re: mkstemp bug
- From: Sam Steingold <sds at gnu dot org>
- To: cygwin at cygwin dot com
- Date: Wed, 27 Apr 2005 18:06:09 -0400
- Subject: Re: mkstemp bug
- References: <usm1cb0aa.fsf@gnu.org>
- Reply-to: sds at gnu dot org
> * 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
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