On Mon, 16 Apr 2001, Shay Deloya wrote:
> On asm-mips/ioctl.h , there is a mask on the size transfered to the ioctl ,
> e.g. : when implementing an ioctl that handles IO , the max size the
> supported in mips is 0xff as defined in the code below:
>
>
> #define _IOWR(type,nr,size)
> _IOC(_IOC_READ|_IOC_WRITE,(type),(nr),sizeof(size))
>
>
> and _IOC uses size in this way:
>
> (((size) & _IOC_SLMASK) << _IOC_SIZESHIFT)) // (_IOC_SLMMASK = 0xff)
>
>
> The limited size causes problems on drivers that use size mask to their
> needs, while officialy the allowed limit is 2^13 ( 8kB) by definition .
This was fixed in the CVS tree some weeks ago.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven ------------- Sony Software Development Center Europe (SDCE)
Geert.Uytterhoeven@sonycom.com ------------------- Sint-Stevens-Woluwestraat 55
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