>-- Messaggio originale --
>Date: Sat, 18 Sep 2004 11:02:27 +0200
>From: Pawel Jakub Dawidek <[EMAIL PROTECTED]>
>To: Giorgos Keramidas <[EMAIL PROTECTED]>
>Cc: [EMAIL PROTECTED]
>Cc: [EMAIL PROTECTED]
>Subject: Re: FreeBSD Kernel buffer overflow
>
>
>On Fri, Sep 17, 2004 at 12:37:12PM +0300, Giorgos Keramidas wrote:
>+> % +#ifdef INVARIANTS
>+> % + KASSERT(0 <= narg && narg <= 8, ("invalid number of syscall
>args"));
>+> % +#endif
>
>Maybe:
>KASSERT(0 <= narg && narg <= sizeof(args) / sizeof(args[0]),
> ("invalid number of syscall args"));
>
>So if we decide to increase/decrease it someday, we don't have to remember
>about this KASSERT().
Maybe better:
#define ARGS_MAGIC 8
...
int args[ARGS_MAGIC];
....
#ifdef INVARIANTS
KASSERT(0 <= narg && narg <= ARGS_MAGIC, ("invalid number of syscall args"));
#endif
(preprocession work)
rookie
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