Date: Fri, 15 Sep 2006 10:55:38 +0530 From: <sivakumar.subramani@wipro.com> To: <gurney_j@resnet.uoregon.edu> Cc: freebsd-net@FreeBSD.org Subject: RE: Reading a configuration file from a driver code during intialization. Message-ID: <956E7FA2615F3B4595FC5F22870A722108100C@blr-m3-msg.wipro.com> In-Reply-To: <20060914161309.GC9421@funkthat.com>
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Hi Mark,
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As I mentioned in the previous mail, the main issue is to read a
Configuration parameter file from driver code. I am already using Sysctl
variables as mentioned below,
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Currently I have written a small kernel module that will create a sysctl
variable and update with a default value. After loading this module,
using shell scripts, I read the configuration file and get the user set
values and update the sysctl variable in that value. Then I will load my
driver where I read the sysctl variable to get the required values set
by the user in the configuration file.
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This is a round about way. Is there is any other way to read a
configuration file from Driver code.
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Thanks,
~Siva
-----Original Message-----
From: John-Mark Gurney [mailto:gurney_j@resnet.uoregon.edu]=0D
Sent: Thursday, September 14, 2006 9:43 PM
To: SIVAKUMAR SUBRAMANI (WT01 - Computing Systems & Storage)
Cc: freebsd-net@FreeBSD.org
Subject: Re: Reading a configuration file from a driver code during
intialization.
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sivakumar.subramani@wipro.com wrote this message on Thu, Sep 14, 2006 at
12:16 +0530:
> Is there is any other solution to the above problem?
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> Actually I am looking for some thing similar to Module loadable
> parameters in the Linux Device Driver.
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look at kenv... It lets you set arbitrary values and access them in
the kernel... you can use the TUNABLE_* macros provided by sys/kernel.h
to make accessing them easier...
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If the variables need to change at run time, look at SYSCTL...
=0D
--=0D
John-Mark Gurney Voice: +1 415 225 5579
=0D
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