Subject: Re: implementing closeall via a syscall
To: Greywolf <email@example.com>
From: George Peter Staplin <GeorgePS@XMission.com>
Date: 01/06/2004 16:20:54
On Mon, 5 Jan 2004, Greywolf wrote:
> Date: Mon, 5 Jan 2004 12:02:03 -0800 (PST)
> From: Greywolf <firstname.lastname@example.org>
> To: Andrew Brown <email@example.com>
> Cc: mouss <firstname.lastname@example.org>, tech-kern@NetBSD.org
> Subject: Re: implementing closeall via a syscall
> Thus spake Andrew Brown ("AB> ") sometime Today...
> AB> >solaris has closefrom(), which does the same thing (using /proc if I'm
> AB> >not mistaken). So that would be a better name.
> AB> uh...where?
> Solaris 2.8 and above have (paraphrased):
> closefrom(int n): close all fds equal to and above n
> fdwalk(int (*fn)(void *, int), void *callback): generate a list of open
> file descriptors, passing the pointer to the callback data
> as the first arg of fn, and passing the value of the open fd
> from the list as the second arg of fn.
> I would prefer to see a closem() or closefrom() or whatever apply to
> a range of fds as user-defined, i.e. closem(from,to), which closes all
> descriptors from "from" to "to", inclusive, as a program might wish to
> relocate fds 0, 1, 2 to some other place. closem(from, -1) or
> closem(-1,to) is what I envisioned. Unadjustably single-ended ranges
> are a major pain, from a programming point of view.
To me those names are not ideal. What do you think about closerange() or
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