Date: Sun, 28 Oct 2001 09:20:32 -0500 (EST) From: Robert Watson <rwatson@FreeBSD.org> To: sobomax@FreeBSD.org Cc: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: ports/devel/ORBit Makefile ports/devel/ORBit/files patch-src::IIOP::giop-msg-buffer.c Message-ID: <Pine.NEB.3.96L.1011028090805.15623B-100000@fledge.watson.org> In-Reply-To: <E15xhiX-0002er-00@smtp4.port.ru>
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On Sun, 28 Oct 2001, Maxim Sobolev wrote:
> On Fri, 26 Oct 2001 13:22:44 -0400 (EDT), Robert Watson wrote:
> >
> > Are you exceeding UIO_MAXIOV entries in the array? Right now, I think
> > it's 35, which for dynamically generated entries, could be too small.
> > That error will result in EINVAL, and is documented in the man page.
>
> Yes, I've already been clued about this, though it's not a 35, but
> 1,024. :)
Hmm. I have no idea where the number 35 came from. :-) Maybe another
platform -- I notice that Solaris actually sets it to 16:
/usr/include/limits.h:#define IOV_MAX _XOPEN_IOV_MAX
/usr/include/limits.h:#define _XOPEN_IOV_MAX 16 /* max #iovec/process with readv()/writev() */
My local Linux box has:
...
linux/uio.h: * UIO_MAXIOV shall be at least 16 1003.1g (5.4.1.1)
...
#define UIO_MAXIOV 1024
#if 0
#define UIO_MAXIOV 16 /* Maximum iovec's in one operation
16 matches BSD */
/* Beg pardon: BSD has 1024 --ANK */
#endif
Robert N M Watson FreeBSD Core Team, TrustedBSD Project
robert@fledge.watson.org NAI Labs, Safeport Network Services
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