Re: change kernel name

From: Richard B. Johnson (root_at_chaos.analogic.com)
Date: 02/05/04

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    Date:	Thu, 5 Feb 2004 14:33:20 -0500 (EST)
To: "Randy.Dunlap" <rddunlap@osdl.org>

    Hello all,

    It turns out that you can easily change the kernel name, version,
    etc., even on a running kernel.

    Everything you need is already exported.
    A very easy module and test program is attached.

    Script started on Thu Feb 5 14:24:20 2004
    # ./tester
    Usage:
    ./tester <Item> <string>
    Items are SYSNAME, NODENAME, RELEASE, VERSION, MACHINE, DOMAIN
    # ./tester SYSNAME foo
    Can't open device file, UNAME
    Maybe `insmod` the driver?
    # insmod unamedrvr.o
    # ./tester sysname foo
    # uname -a
    foo chaos 2.4.24 #1 SMP Wed Feb 4 11:50:33 EST 2004 i686
    # ./tester sysname Linux
    You have new mail in /var/spool/mail/root
    # uname -a
    Linux chaos 2.4.24 #1 SMP Wed Feb 4 11:50:33 EST 2004 i686
    # ./tester nodename bar
    # uname -a
    Linux bar 2.4.24 #1 SMP Wed Feb 4 11:50:33 EST 2004 i686
    # ./tester node chaos
    # uname -a
    Linux chaos 2.4.24 #1 SMP Wed Feb 4 11:50:33 EST 2004 i686
    # ./tester releas 1.1
    You have new mail in /var/spool/mail/root
    # uname -a
    Linux chaos 1.1 #1 SMP Wed Feb 4 11:50:33 EST 2004 i686
    # ./tester r 2.4.24
    # uname -a
    Linux chaos 2.4.24 #1 SMP Wed Feb 4 11:50:33 EST 2004 i686
    # exit
    exit
    Script done on Thu Feb 5 14:27:04 2004

    Have fun!

    On Thu, 5 Feb 2004, Randy.Dunlap wrote:

    > On Thu, 05 Feb 2004 07:04:26 -0500 "Nicholas Berry" <nikberry@med.umich.edu> wrote:
    >
    > | Note the words 'after the compilation'.
    >
    > I think that the other person who answered 'no' was close enough.
    >
    > BTW, did you say what processor architecture and what kernel
    > image file format? If it's a zipped kernel image, changing text
    > in it is a bit tougher, I guess. If it's not zipped, almost
    > anything could change that string (just not make it larger).
    >
    > --
    > ~Randy
    >
    > | >>> "Richard B. Johnson" <root@chaos.analogic.com> 02/04/04 07:38AM
    > | >>>
    > | On Tue, 3 Feb 2004, Gaspar Bakos wrote:
    > |
    > | > Hello,
    > | >
    > | > I have the following question:
    > | > If I compile the kernel (2.4.*) and boot it in, then the
    > | kernel-release,
    > | > as shown by 'uname -r' will be the string that was in the
    > | EXTRAVERSION
    > | > string from the kernel Makefile.
    > | > Is there any way to change this 'identity' of the kernel after the
    > | > compilation?
    > | > Such as
    > | > changekernelname bzImage "newname"
    > |
    > | Put anything you want in the structure, system_utsname, in your copy
    > | of
    > | linux-nn-nn/init/version.c.
    > |
    > | Cheers,
    > | *** Johnson
    > | Penguin : Linux version 2.4.24 on an i686 machine (797.90 BogoMips).
    > | Note 96.31% of all statistics are fiction.
    > -
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    Cheers,
    *** Johnson
    Penguin : Linux version 2.4.24 on an i686 machine (797.90 BogoMips).
                Note 96.31% of all statistics are fiction.

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