Date: Mon, 5 Sep 2005 19:53:38 +0400 From: Stanislav Sedov <stas@core.310.ru> To: Jeb Campbell <jebc@c4solutions.net> Cc: freebsd-fs@freebsd.org Subject: Re: kernel newb -- read/write to a local file from in kernel Message-ID: <20050905155338.GB9283@core.310.ru> In-Reply-To: <431BE951.4070101@c4solutions.net> References: <431BE951.4070101@c4solutions.net>
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On Mon, Sep 05, 2005 at 01:44:33AM -0500, Jeb Campbell wrote: > I'm trying to learn about kernel programming and as a weekend project > I've started writing a Netgraph to file/dev module. > > The Netgraph stuff was pretty easy, but I'm at a loss on the file access > part as I've never done anything in-kernel. > > After much searching (most of it not knowing what I was looking for), I > think that I'm looking for something like "Vnode interface mechanics, > write to a local file" as taught in Mr. McKusick's "FreeBSD Kernel > Internals: An Intensive Code Walkthrough". > > I've looked at nullfs/null_vnops.c, but I think that is more of a > pass-through example. Does anyone know of any online code that shows > the process of opening a file/device for read/write? > > Thanks in advance if someone has any tips or more info. > > (and sorry to bother the kernel hackers with such a newbie question) > > -- > Jeb Campbell > jeb@c4solutions.net > > _______________________________________________ > freebsd-fs@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-fs > To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org" > > Look throgh md(4) driver source (/sys/dev/md) - it is a good example.
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