Messages in this thread |  | | Date | Sun, 18 Nov 2001 00:15:25 -0800 (PST) | From | "Roy S.C. Ho" <> | Subject | Re: Raw access to block devices |
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Hi Peter, thanks for your help. I found that the control device is only for GETBIND or SETBIND. It seems that the binded devices still have to be char devices. Is there a way to change this? Your help is much appreciated. Thanks.
--- "Peter T. Breuer" <ptb@it.uc3m.es> wrote: > "A month of sundays ago Roy S.C. Ho wrote:" > > I would like to write a driver for a block device > that > > is better to be accessed directly without going > > through the buffer cache. I read the source code > raw.c > > and learnt that linux does have raw I/O support. > > However, it seems to me that the support only > provides > > a character device interface to users. Is there a > > I think that's the control device. You can work out > how to use it > by looking at the ioctls in raw.c. But, yes, sure, > if you get some > "official" news on how to work it, let me know too > and I'll use the > info like a shot! > > > simple way to maintain the block device interface > to > > user programs / other parts of the kernel, while > > bypassing the buffer cache system? > > Peter > -
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