From: Valdis.Kletnieks@vt.edu
To: vamsi krishna <vamsi.krishnak@gmail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Quick close of all the open files.
Date: Tue, 06 Jun 2006 17:56:32 -0400 [thread overview]
Message-ID: <200606062156.k56LuWFD001871@turing-police.cc.vt.edu> (raw)
In-Reply-To: Your message of "Wed, 07 Jun 2006 03:15:43 +0530." <3faf05680606061445r7da489d9tc265018bc7960779@mail.gmail.com>
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On Wed, 07 Jun 2006 03:15:43 +0530, vamsi krishna said:
> Hello,
>
> I found that the following code is closing all the open files by the
> program, do you think its a bug in kernel code?
>
> ------------
> fp = tmpfile();
> fp->_chain = stderr;
> fpclose(fp);
> fp = NULL;
strace that, and see how many times close() gets called. If it gets
called once, it's a kernel bug. If it gets called once for each open
file, it's a userspace bug.
For bonus points, how did you verify that all the open files were closed?
(Hint - what does that fp->_chain = stderr *really* do? ;)
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next prev parent reply other threads:[~2006-06-06 21:56 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-06-06 21:45 vamsi krishna
2006-06-06 21:56 ` Valdis.Kletnieks [this message]
2006-06-06 22:02 ` vamsi krishna
2006-06-06 22:39 ` Måns Rullgård
2006-06-07 0:33 ` Valdis.Kletnieks
2006-06-07 1:22 ` vamsi krishna
2006-06-07 7:57 ` Måns Rullgård
2006-06-07 8:50 ` Bernd Petrovitsch
2006-06-07 7:56 ` Måns Rullgård
2006-06-06 22:03 ` Måns Rullgård
2006-06-07 11:12 ` linux-os (Dick Johnson)
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