lkml.org 
[lkml]   [2008]   [Oct]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [RFC] Kernel version numbering scheme change
    On Wed, Oct 15, 2008 at 05:25:09PM -0700, Greg KH wrote:
    > Hi,

    Hi Greg,

    >...
    > Yes, we can handle the major/minor macros in the kernel to provide a
    > compatible number so that automated scripts will not break, that's not a
    > big deal.
    >
    > Any thoughts?
    >...

    how much of userspace breaks when we suddenly "just for fun" change the
    version numbering scheme in a very radical way?

    I'm not thinking of scripts for building the kernel.

    I'm thinking of the fact that starting with glibc different pieces of
    userspace software interpret the kernel version number they get from
    various sources like e.g. <linux/version.h>, "uname -r" or an ioctl.

    As a random example, the "config" script of OpenSSL 0.9.8g contains the
    following:

    <-- snip -->

    ...
    RELEASE=`(uname -r) 2>/dev/null` || RELEASE="unknown"
    ...
    case "${SYSTEM}:${RELEASE}:${VERSION}:${MACHINE}" in
    ...
    Linux:[2-9].*)
    echo "${MACHINE}-whatever-linux2"; exit 0
    ;;

    Linux:1.*)
    echo "${MACHINE}-whatever-linux1"; exit 0
    ;;
    ...

    <-- snip -->


    Change the version number of the kernel in the way you suggest, and
    trying to build it will fail with:

    <-- snip -->

    $ ./config
    Operating system: x86_64-whatever-Linux
    This system (Linux) is not supported. See file INSTALL for details.
    $

    <-- snip -->


    If a distribution will try to autobuild an urgent OpenSSL security
    update for their stable release in a chroot on a machine running
    kernel 2009.2.3 they will surely love you for being responsible
    for this...


    > thanks,
    >
    > greg k-h

    cu
    Adrian

    --

    "Is there not promise of rain?" Ling Tan asked suddenly out
    of the darkness. There had been need of rain for many days.
    "Only a promise," Lao Er said.
    Pearl S. Buck - Dragon Seed



    \
     
     \ /
      Last update: 2008-10-16 14:53    [W:0.031 / U:59.704 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site