Re: [PATCH 3/4] Consolidate sys32 select

[Martin Josefsson <gandalf@wlug.westbo.se>]

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On Wed, 2004-05-26 at 01:10, Arnd Bergmann wrote:
> Martin Josefsson <gandalf@wlug.westbo.se> schrieb am 26.05.2004,
> 00:29:13:
> 
> > You mean in compat_sys_select() ?
> > compat_ptr() takes an u32 as argument, needs casting, ugly.
> > But you want it done that way?
> 
> When using compat_ptr properly, you don't need any casts,
> see the patch below (the patch is probably messed up by my 
> broken mailer, but you get the picture).

Yes,  my brain didn't go the extra distance, davem responded before I
could get to bed and I just had to respond :)

Your patch will fix the problem, I don't even need to test it.
Thanks, looking forward to see a fix in mainline :)

> ===== fs/compat.c 1.24 vs edited =====
> --- 1.24/fs/compat.c	Sat May 22 06:31:47 2004
> +++ edited/fs/compat.c	Wed May 26 00:57:49 2004
> @@ -1300,13 +1300,15 @@
>  
>  asmlinkage long
>  compat_sys_select(int n, compat_ulong_t __user *inp, compat_ulong_t
> __user *outp,
> -		compat_ulong_t __user *exp, struct compat_timeval __user *tvp)
> +		compat_ulong_t __user *exp, compat_uptr_t utv)
>  {
>  	fd_set_bits fds;
> +	struct compat_timeval __user *tvp;
>  	char *bits;
>  	long timeout;
>  	int ret, size, max_fdset;
>  
> +	tvp = compat_ptr(utv);
>  	timeout = MAX_SCHEDULE_TIMEOUT;
>  	if (tvp) {
>  		time_t sec, usec;
-- 
/Martin

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