Re: Quick close of all the open files.

[Valdis . Kletnieks]

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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