Re: Kernel includefile bug not fixed after a year :-(

From: Joerg Schilling (schilling_at_fokus.fraunhofer.de)
Date: 09/30/03

  • Next message: Olivier Galibert: "Re: RFC: [2.6 patch] disallow modular IPv6" 
    Date:	Tue, 30 Sep 2003 13:57:24 +0200 (CEST)
To: axboe@suse.de, schilling@fokus.fraunhofer.de

    >From axboe@suse.de Tue Sep 30 13:54:12 2003

    >> >> Is there no interest in user applications for kernel features or is there just
    >> >> no kernel maintainer left over who makes the needed work?
    >>
    >> >/usr/include/scsi/scsi.h looks fine on my system, probably also on
    >> >yours. You should not include kernel headers in your user space program.
    >>
    >> Looks like you did not understand the background :-(

    >I think I do.

    Sorry, but you just verified that you don't :-(

    >> In order to use kernel interfaces you _need_ to include kernel include
    >> files.

    >False. You need to include the glibc kernel headers.

    False: as glibc kernel headers are not part of the kernel distribution.

    >> This is in particular true as long as we are talking about
    >> beta/testing kernels.
    >>
    >>
    >> Background: on homogeneous platforms like e.g. Solaris or FreeBSD
    >> which are maintained and distributed as whole, an _enduser_ should
    >> include files from /usr/include only.
    >>
    >> This is not even true for people who do Solaris or FreeBSD
    >> kernel development and like to test new features with user level
    >> programs. It is definitely not true for compilations against
    >> Linux kernel interfaces.
    >>
    >> Linux is not a homogeneous system. There is a separately developed
    >> kernel and a separate base user level system. People often install a
    >> newer kernel and need to recompile software because the kernel/user
    >> interfaces are not stable between different Linux releases.

    >That's a pretty bold claim, when did the kernel/user interface break? A
    >lot of care is usually taken to ensure that this does not happen.

    >This subject has been debated to death lots of times before, I'm sure
    >the archives are more detailed and enlightening that I am.

    If these debates have not been done in a serious way, or people without
    the needed kernel development background knowledge did decide, these
    debates are just void.

    Jörg 

    -- 
 EMail:joerg@schily.isdn.cs.tu-berlin.de (home) Jörg Schilling D-13353 Berlin
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