Re: [HEADSUP] ucred / group changes in FreeBSD 15.0

Kyle Evans <kevans@FreeBSD.org> writes:
> The major struct ucred change[0] here is that we now track the egid
> outside of the cr_groups array.  We've had a cr_gid macro to alias
> cr_groups[0] for over 30 years, but the macro has now been replaced by
> actual members in struct ucred and struct xucred.  In the xucred case,
> we use some union trickery to alias it to the first element of
> cr_groups to avoid breaking the ABI.

Why not just:

	gid_t	cr_gid;		/* effective group id */
	gid_t	cr_groups[XU_NGROUPS - 1];

which would be fully ABI compatible?

DES
-- 
Dag-Erling Smørgrav - des@FreeBSD.org