Quick close of all the open files.

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;
------------

o Is there any other elegant way to close all the open files (rather
than reading from /proc/<pid>/fd and calling close on each of the fd?)

Looking forward to hear from you.

Thank you,
Vamsi.
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