Date: Thu, 01 Jan 2009 21:01:10 +0100 From: Christoph Mallon <christoph.mallon@gmx.de> To: Luigi Rizzo <rizzo@iet.unipi.it> Cc: current@freebsd.org Subject: Re: RFC: new utility, kmodpatch Message-ID: <495D2106.2090403@gmx.de> In-Reply-To: <20090101183026.GA15385@onelab2.iet.unipi.it> References: <20090101183026.GA15385@onelab2.iet.unipi.it>
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This is a multi-part message in MIME format. --------------040209030708000900040003 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Luigi Rizzo schrieb: > In a nutshell, the kmodpatch utility can print or alter the content > of device/quirk tables in kernel modules (I think Linux has some > similar tool, though i don't remember the name -- or perhaps it is > a feature of insmod ?). This looks useful for experimentation. > Feedback welcome. Attached is a slightly cleaned up version of your tool. I style(9)ified it a bit, added const and static, removed unused stuff (asm("jmp foo")?), added error checks in some places, which were missing, and ensured that the table read in from file is NUL-terminated. I also marked one place with XXX, where I think there is an off-by-one error. > DESCRIPTION > [...] > A couple of real life examples: > > kmodpatch umass.ko - @0 0x4050 0x4a5 0x0101 0x4200 > set the kernel to use flags UMASS_PROTO_SCSI | UMASS_PROTO_BBB and > quirks WRONG_CSWSIG | NO_SYNCHRONIZE_CACHE for a certain GSM phone > that implements the umass interface; > > kmodpatch uscanner.ko - @0 0x04b8 0x084a 0 > let uscanner.ko recognise a newly introduced MFP scanner device. I think, this should be moved into the EXAMPLES section. Regards Christoph PS: Hopefully you haven't forgotten my patch. --------------040209030708000900040003--
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