> /* ioctl command encoding: 32 bits total, command in lower 16 bits,
> * size of the parameter structure in the lower 14 bits of the
> * upper 16 bits.
> If you have some spare time, scanning thru the sources to find
> all IOCTL codes not using these rules would be usefull thing
> for further development. Perhaps for introducing new codes,
> along with old compability ones, or just helping audit things.
There are some codes which don't follow these rules because they
cannot. E.g. SIOCDEVPRIVATE (the parameter is driver-specific).
The only clean solution for these would be to pass an additional
explicit size parameter, but that's missing from ioctl() broken as
designed in the early '70s.
Olaf
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This archive was generated by hypermail 2b29 : Fri May 19 2000 - 05:07:07 EDT