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Date:      Sat, 14 Nov 2020 15:50:36 -0500
From:      Shawn Webb <shawn.webb@hardenedbsd.org>
To:        Mateusz Guzik <mjg@FreeBSD.org>
Cc:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org
Subject:   Re: svn commit: r367692 - head/sys/sys
Message-ID:  <20201114205036.tnxvwarsddmu4shz@mutt-hbsd>
In-Reply-To: <202011141920.0AEJKbpO050396@repo.freebsd.org>
References:  <202011141920.0AEJKbpO050396@repo.freebsd.org>

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On Sat, Nov 14, 2020 at 07:20:37PM +0000, Mateusz Guzik wrote:
> Author: mjg
> Date: Sat Nov 14 19:20:37 2020
> New Revision: 367692
> URL: https://svnweb.freebsd.org/changeset/base/367692
>=20
> Log:
>   cred: reorder cr_audit to be closer to the lock
>  =20
>   This makes cr_uid avoid sharing.
>=20
> Modified:
>   head/sys/sys/ucred.h
>=20
> Modified: head/sys/sys/ucred.h
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D
> --- head/sys/sys/ucred.h	Sat Nov 14 19:19:27 2020	(r367691)
> +++ head/sys/sys/ucred.h	Sat Nov 14 19:20:37 2020	(r367692)
> @@ -63,6 +63,7 @@ struct ucred {
>  	struct mtx cr_mtx;
>  	u_int	cr_ref;			/* (c) reference count */
>  	u_int	cr_users;		/* (c) proc + thread using this cred */
> +	struct auditinfo_addr	cr_audit;	/* Audit properties. */
>  #define	cr_startcopy cr_uid
>  	uid_t	cr_uid;			/* effective user id */
>  	uid_t	cr_ruid;		/* real user id */
> @@ -78,7 +79,6 @@ struct ucred {
>  	void 		*cr_pspare2[2];	/* general use 2 */
>  #define	cr_endcopy	cr_label
>  	struct label	*cr_label;	/* MAC label */
> -	struct auditinfo_addr	cr_audit;	/* Audit properties. */
>  	gid_t	*cr_groups;		/* groups */
>  	int	cr_agroups;		/* Available groups */
>  	gid_t   cr_smallgroups[XU_NGROUPS];	/* storage for small groups */

Hey Mateusz,

Since this changes KBI, does __FreeBSD_version need bumping?

Thanks,

--=20
Shawn Webb
Cofounder / Security Engineer
HardenedBSD

GPG Key ID:          0xFF2E67A277F8E1FA
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