Re: _cleanup() vs Linux fcloseall()

On Thu, 30 Mar 2006, Frank Behrens wrote:

Peter Jeremy <peterjeremy@xxxxxxxxxxxxxxxx> wrote on 30 Mar 2006 19:16:
On Thu, 2006-Mar-30 00:41:00 +0200, Maxime Henrion wrote:
FWIW, NetBSD has something that close all the file descriptors, and it's
done with fcntl(fd, F_CLOSEM) (using fcntl() on one file descriptor to
close all of them looks a bit weird to me, but well...).

If it close any fd's numerically greater than the passed fd, that would
make a lot of sense.

Yes. It is also implemented in IBM AIX (and I believe in SGI IRIX,
too).
see http://publib.boulder.ibm.com/infocenter/pseries/v5r3/index.jsp?topic=/com.ibm.aix.doc/libs/basetrf1/fcntl.htm

fcloseall() closes and flushes all FILEs, not file descriptors.
Libc needs to perform this work since that is where FILEs are
allocated. fcntl() is a system call.

--
DE

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