1 /* 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 * 7 * @(#)ucred.h 8.4 (Berkeley) 01/09/95 8 */ 9 10 #ifndef _SYS_UCRED_H_ 11 #define _SYS_UCRED_H_ 12 13 /* 14 * Credentials. 15 */ 16 struct ucred { 17 u_short cr_ref; /* reference count */ 18 uid_t cr_uid; /* effective user id */ 19 short cr_ngroups; /* number of groups */ 20 gid_t cr_groups[NGROUPS]; /* groups */ 21 }; 22 #define cr_gid cr_groups[0] 23 #define NOCRED ((struct ucred *)0) /* no credential available */ 24 #define FSCRED ((struct ucred *)-1) /* filesystem credential */ 25 26 #ifdef KERNEL 27 #define crhold(cr) (cr)->cr_ref++ 28 29 struct ucred *crcopy __P((struct ucred *cr)); 30 struct ucred *crdup __P((struct ucred *cr)); 31 void crfree __P((struct ucred *cr)); 32 struct ucred *crget __P((void)); 33 int suser __P((struct ucred *cred, u_short *acflag)); 34 #endif /* KERNEL */ 35 36 #endif /* !_SYS_UCRED_H_ */ 37