4.3BSD-Reno/src/sys/sys/ucred.h

/*
 * Copyright (c) 1989 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution is only permitted until one year after the first shipment
 * of 4.4BSD by the Regents.  Otherwise, redistribution and use in source and
 * binary forms are permitted provided that: (1) source distributions retain
 * this entire copyright notice and comment, and (2) distributions including
 * binaries display the following acknowledgement:  This product includes
 * software developed by the University of California, Berkeley and its
 * contributors'' in the documentation or other materials provided with the
 * distribution and in all advertising materials mentioning features or use
 * of this software.  Neither the name of the University nor the names of
 * its contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 *	@(#)ucred.h	7.4 (Berkeley) 6/28/90
 */

#ifndef _UCRED_
#define	_UCRED_

/*
 * Credentials.
 */
struct ucred {
	u_short	cr_ref;			/* reference count */
	uid_t	cr_uid;			/* effective user id */
	short	cr_ngroups;		/* number of groups */
	gid_t	cr_groups[NGROUPS];	/* groups */
};
#define cr_gid cr_groups[0]
#define NOCRED ((struct ucred *)-1)

#ifdef KERNEL
#define	crhold(cr)	(cr)->cr_ref++
struct ucred *crget();
struct ucred *crcopy();
struct ucred *crdup();
#endif KERNEL
#endif _UCRED_