Location for Linux kernel module support files

Tim Moloney moloney at mrsl.com
Wed Oct 2 00:33:08 EST 2002

David Gibson wrote:

> On Mon, Sep 30, 2002 at 11:46:22AM -0400, Tim Moloney wrote:
>>I have written a device driver (module) that needs a configuration
>>file.  Where is the standard place to put such files?
> There isn't.  Device drivers, being part of the kernel, should not be
> reading random files from the user's file system.  If the driver needs
> configuration, the normal method is for userland scripts (either
> startup or hotplug) to issue commands to poke the configuration into
> the driver at runtime.
>>I originally put it in the same directory as the .o file but
>>'depmod -a' complains that it's not an ELF file.

The file the device driver needs is an FPGA program file that
- is data that I don't want compiled into the driver wasting space
- will initially be specified when the driver is loaded via rc script
- that can be reloaded by a program to customize it for a particular

I know that this isn't a a typical situation and I have only seen one
other device driver like this.  It is a 1553 driver that creates a
/usr/lib/<module_name> directory for its configuration file.  Is there
a better location?

Tim Moloney
ManTech Real-time Systems Laboratory
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