Kernel module symbol versioning?

From: Kendall Bennett (KendallB_at_scitechsoft.com)
Date: 08/22/03

  • Next message: Tom Rini: "Re: [PATCH] fix the -test3 input config damages" 
    To: linux-kernel@vger.kernel.org
Date:	Fri, 22 Aug 2003 13:43:16 -0700

    Hi,

    I have been reading the book "Linux Device Drivers, 2nd Edition" and have
    some questions about symbol versioning. In Chapter 11 it mentions that
    you can use the <linux/modversions.h> header file to compile your module
    with symbol versions enabled, so that your module will load on multiple
    kernels and fail if the symbol CRC's do not match. I tested this out on a
    simple test module, but this module fails to load unless I pass the '-f'
    flag to insmod (Red Hat 7.3 and 8.0).

    Is there a way to compile the module so that insmod will only complain if
    there is a version conflict? Or do you always have to use -f in this case
    to force the module to load? If you have to do that, will -f still fail
    to load if the versioned symbols don't match?

    Regards, 

    ---
Kendall Bennett
Chief Executive Officer
SciTech Software, Inc.
Phone: (530) 894 8400
http://www.scitechsoft.com
~ SciTech SNAP - The future of device driver technology! ~
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  • Next message: Tom Rini: "Re: [PATCH] fix the -test3 input config damages"

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