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From: miquels@cistron.nl (Miquel van Smoorenburg)
To: linux-kernel@vger.rutgers.edu
Subject: Re: RLIM_INFINITY inconsistency between archs
Date: 1 Aug 2000 09:36:57 GMT	[thread overview]
Message-ID: <8m65np$mm3$1@enterprise.cistron.net> (raw)
In-Reply-To: 8m54u3$dh0$1@cesium.transmeta.com

In article >8m54u3$dh0$1@cesium.transmeta.com>,
H. Peter Anvin <hpa@zytor.com> wrote:
>Followup to:  <8m4uri$d9e$1@enterprise.cistron.net>
>By author:    miquels@cistron.nl (Miquel van Smoorenburg)
>In newsgroup: linux.dev.kernel
>> 
>> >> Everything in /usr/include belongs to and depends on glibc, not
>> >> the currently running kernel.
>> >
>> >Unfortunately that doesn't work very well.  For user-space daemons
>> >which talk to Linux-specific kernel interfaces, such as automount, you
>> >need both the glibc and the Linux kernel headers.
>> 
>> Yes, but you can't mix&match anyway. For stuff like that you're
>> probably best off by using a talktokernel.c file that is
>> compiled with -I/path/to/kernel/include while the rest of the
>> daemon doesn't know about kernel internals.
>> 
>> That could and perhaps should be fixed, but I think that is
>> a different issue entirely.
>
>For most kernel interface daemons, that is not an option.  You need to
>be able to translate (or just transfer information) between
>glibc-provided and kernel-provided data structures, so you need to be
>able to include all the datatypes.

Why? As I said you can use a glue layer. Note that you still
cannot mix /usr/include/net and /usr/src/linux/include/net anyway,
so clashes will always exist with the current system.
I agree it should probably be fixed.

>Let's get this straight: #include <linux/*> and #include <asm/*> are
>*expected* to be the kernel headers.  This is a completely different
>issue from the fact that glibc headers shouldn't #include these
>headers like libc5 did.

But again as I said that is a different issue. This thread (with the
misleading Subject: header) is mostly about how to build modules
correctly.

There are 3 different issues here:

1. Consistent build environment for 3rd party modules
2. kernel-provided data structures for system daemons like autofs
3. kernel-provided data structures being used in glibc headers

I was merely talking about #1

Mike.
-- 
Cistron Certified Internetwork Expert #1. Think free speech; drink free beer.

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  parent reply	other threads:[~2000-08-01  9:17 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <200007271459.KAA04701@tsx-prime.MIT.EDU>
     [not found] ` <200007271531.KAA89926@tomcat.admin.navo.hpc.mil>
2000-07-31 14:57   ` RLIM_INFINITY inconsistency between archs Kai Henningsen
2000-07-31 17:35     ` Richard B. Johnson
2000-07-31 20:06       ` Mike Galbraith
2000-07-31 21:15       ` Miquel van Smoorenburg
2000-07-31 21:49         ` Richard B. Johnson
2000-07-31 22:39           ` Miquel van Smoorenburg
2000-07-31 22:13         ` H. Peter Anvin
2000-07-31 22:33           ` Miquel van Smoorenburg
2000-08-01  0:17             ` H. Peter Anvin
2000-08-01  0:43               ` wingel
2000-08-01  1:00                 ` H. Peter Anvin
2000-08-01  2:06                   ` wingel
2000-08-01  9:36               ` Miquel van Smoorenburg [this message]
2000-08-01 17:03                 ` H. Peter Anvin
2000-08-01 21:50                   ` Miquel van Smoorenburg
2000-08-01  2:18           ` Mike Castle
2000-08-01  2:30             ` wingel
2000-08-01 23:55               ` Mike Castle
2000-08-02  0:18                 ` H. Peter Anvin
2000-08-02  9:28                   ` Miquel van Smoorenburg
2000-08-04  1:07                     ` H. Peter Anvin
2000-08-01 17:03             ` H. Peter Anvin
2000-08-01  2:11         ` Mike Castle
2000-08-01  9:38           ` Miquel van Smoorenburg
2000-08-01 23:44             ` Mike Castle
2000-08-02 18:16     ` peter swain
2000-07-31 17:31 Jesse Pollard
     [not found] <20000728112353Z160228-16385+645@vger.rutgers.edu>
2000-07-31 15:26 ` Kai Henningsen
2000-08-01  7:53   ` David Howells
2000-08-01 18:15     ` Kai Henningsen
2000-08-02  6:52     ` wingel
     [not found] <FyFI8n.IpM@spuddy.mew.co.uk>
2000-07-29 10:34 ` Stephen Harris
     [not found] <200007281315.OAA30398@flint.arm.linux.org.uk>
2000-07-29  1:09 ` David Howells
     [not found] <200007272122.RAA04791@tsx-prime.MIT.EDU>
     [not found] ` <m2hf9bnm95.fsf@euler.axel.nom>
     [not found]   ` <20000728162225.A4317@saw.sw.com.sg>
2000-07-29  0:51     ` Mike Castle
     [not found] <no.id>
2000-07-28 22:10 ` Adam Sampson
2000-07-28 22:20 ` Adam Sampson
2000-07-29 13:23   ` Miquel van Smoorenburg
     [not found] <3981ED0C.CBE0A0F9@transmeta.com>
2000-07-28 21:02 ` Khimenko Victor
     [not found] <Pine.LNX.4.21.0007280808460.73-100000@rc.priv.hereintown.net>
2000-07-28 20:56 ` Stuart Lynne
2000-07-28 20:13   ` clubneon
     [not found] <E13HsBT-00033e-00@the-village.bc.nu>
     [not found] ` <200007281405.JAA101655@tomcat.admin.navo.hpc.mil>
2000-07-28 14:11   ` Jamie Lokier

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