Date: Thu, 6 May 2010 19:59:56 +0200 (CEST) From: "=?ISO-8859-15?Q?Luk=E1=A8_Czerner?=" <czerner.lukas@gmail.com> To: Julian Elischer <julian@elischer.org> Cc: freebsd-hackers@freebsd.org, =?ISO-8859-15?Q?Luk=E1=A8_Czerner?= <czerner.lukas@gmail.com> Subject: Re: How to get data from kernel module ? Message-ID: <alpine.DEB.1.10.1005061958410.21095@a04-0215a.kn.vutbr.cz> In-Reply-To: <4BE2F13C.4010708@elischer.org> References: <alpine.DEB.1.10.1005061528380.21095@a04-0215a.kn.vutbr.cz> <4BE2F13C.4010708@elischer.org>
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This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. --8323329-695050703-1273168798=:21095 Content-Type: TEXT/PLAIN; charset=windows-1252 Content-Transfer-Encoding: 8BIT On Thu, 6 May 2010, Julian Elischer wrote: > Date: Thu, 06 May 2010 09:41:32 -0700 > From: Julian Elischer <julian@elischer.org> > To: Lukáš Czerner <czerner.lukas@gmail.com> > Cc: freebsd-hackers@freebsd.org > Subject: Re: How to get data from kernel module ? > > On 5/6/10 6:38 AM, Lukáš Czerner wrote: > > Hi, > > > > I am creating a kernel module and I need to get some information from > > that module. I can do this with ioctl and pass the data to the > > user space but it seems a bit unpractical to me, because I do not know > > the amount of the data - it can differ. I do not know of any way to > > pass a list of structures to the userspace through ioctl - is there > > any? > > > > So my question is, is there any standard way in FreeBSD to do this ? > > In linux I would probably use the sysfs, but in FreeBSD I can not find > > anything similar, except just creating some virtual filesystem on my > > own and obviously this is not what I want to do. > > > > you can add a sysctl to pass out arbitrary information very easily. > It's up to you to decide where you want to put it in the sysctl > tree. > Thank to you all for suggestions. I will look at the sysctl then. Thanks! -Lukas --8323329-695050703-1273168798=:21095--
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