Re: [PATCH gnumach] Make mach_msg_header_t have the same size for both 64 bit kernel and userland.

[Samuel Thibault]

Applied, thanks!

Flavio Cruz, le dim. 12 févr. 2023 18:54:58 -0500, a ecrit:
> This has several advantages:
> 1) We don't need to resize mach_msg_header_t, it is just a copy.
> 2) Mig won't require any changes because it statically computes the size

> +#else
> +  if (copyout(&kmsg, &umsg, sizeof(mach_msg_header_t)))
> +    return 1;
> +#endif  /* USER32 */

I'm wondering, though: for kernel-produced messages, are we sure that we
fill the padding bytes with zeroes? We don't want to leak information
through such holes.

Samel