Date: Sun, 28 Jan 2001 19:03:52 -0800 (PST) From: Matt Dillon <dillon@earth.backplane.com> To: Luigi Rizzo <rizzo@aciri.org> Cc: usebsd@free.fr (mouss), drosih@rpi.edu, hackers@FreeBSD.ORG, wollman@khavrinen.lcs.mit.edu Subject: Re: [kernel patch] fcntl(...) to close many descriptors Message-ID: <200101290303.f0T33qg60603@earth.backplane.com> References: <200101281837.f0SIbGI24332@iguana.aciri.org>
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:
:> I agree that breaking coherence is bad, though I find fcntl is the kind of
:> functions to use when you don't have a more specific one:)
:
:do we have (or could we design) a generic mechanism for machine-specific
:syscalls which are not available on all OS ?
:
:basically i am thinking of something like
:
: generic_syscall("fdcloseall", ....);
:
:In this way it would be clear what the non-portable pieces of code
:are, and the mechanism would be extensible with no changes to
:libraries and syscalls. You could even have dynamically-loaded
:modules implementing new "syscalls".
:
: cheers
: luigi
:
:> then I'd propose
:> int fdcloseall(int start);
There is work going on for the AIX equivalent using fcntl(). We should
not create a syscall (it's unnecessary)... if you want a fdcloseall()
function call, it should be in libc and use the fcntl.
I would support one or the other, but not both. I'd recommend the
AIX fcntl API, since it's been around a whole lot longer.
-Matt
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