Messages in this thread | | | Date | Fri, 9 May 2003 01:03:38 +0200 | From | Pavel Machek <> | Subject | Re: ioctl cleanups: enable sg_io and serial stuff to be shared |
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Hi!
> From: Pavel Machek <pavel@ucw.cz> > Date: Thu, 8 May 2003 22:33:14 +0200 > > What about this one: redefine it to (*ioctl)( ...., unsigned *long*, > unsinged long). That means we can add > > #define IOCTL_COMPAT 0x1 0000 0000 > > Bzzt! Doesn't work on 32-bit. COMPAT does not mean 64-bit-->32-bit > translations, stop thinking about the compat layer in this way. > > It is a generic environment translation system. > > Eventually we can use it for things like IBCS2 and stuff like that.
I... do not think so.
You'd then need
.compat_linux32_ioctl .compat_IBCS2_ioctl ...
I do not think that is doable.
> Suggest something sane like defining a macro such as > "compat_task(tsk)" that can be tested by various bits of > code.
That makes more sense. Unfortunately, that means that case "okay, it is compatible" can not be told from "we did not bother to check compat_task()". :-(. Nor do I see a transition phase. Pavel
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