Re: [PATCH] ncpfs: move ioctl32 code to fs/ncpfs/ioctl.c

From: Arnd Bergmann
Date: Thu Jul 27 2006 - 01:44:05 EST

On Thursday 27 July 2006 05:35, Petr Vandrovec wrote:
> Yes, tomorrow (on amd64).

No need to hurry, I was sitting on my patch for more than a year now ;-)

> Although I understand that this code is correct, what about removing this second
>   #ifdef ?  gcc should realize it anyway that without CONFIG_COMPAT defined cmd
> must be equal to NCP_IOC_GETPRIVATEDATA, and having empty "else" variant is IMHO
> just asking for troubles.

That was what I did first, but unfortunately we don't define compat_caddr_t when
CONFIG_COMPAT is disabled, so it would reference an invalid data structure.

> Or what about
>      if (cmd == NCP_IOC_GETPRIVATEDATA_32) {
>         struct ...
>      } else
> #endif
>      if (copy_to_user(argp, &user, sizeof(user)))
>         return -EFAULT;

Yes, that should be clearer than my approach.

Arnd <><
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