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29 * @(#)ucred.h 8.4 (Berkeley) 1/9/95
30 * $FreeBSD: src/sys/sys/ucred.h,v 1.14.2.5 2002/03/09 05:20:25 dd Exp $
31 * $DragonFly: src/sys/sys/ucred.h,v 1.9 2007/01/08 21:32:57 corecode Exp $
38 #include <sys/types.h>
41 #include <sys/param.h>
43 #ifndef _SYS_SPINLOCK_H_
44 #include <sys/spinlock.h>
52 * Please do not inspect cr_uid directly to determine superuserness.
53 * Only the priv(9) functions should be used for this.
56 int cr_ref; /* reference count */
57 uid_t cr_uid; /* effective user id */
58 short cr_ngroups; /* number of groups */
59 gid_t cr_groups[NGROUPS]; /* groups */
60 struct uidinfo *cr_uidinfo; /* per uid resource consumption */
61 struct uidinfo *cr_ruidinfo; /* per ruid resource consumption */
62 struct prison *cr_prison; /* prison info */
63 uid_t cr_ruid; /* Real user id. */
64 uid_t cr_svuid; /* Saved effective user id. */
65 gid_t cr_rgid; /* Real group id. */
66 gid_t cr_svgid; /* Saved effective group id. */
68 #define cr_gid cr_groups[0]
69 #define NOCRED ((struct ucred *)0) /* no credential available */
70 #define FSCRED ((struct ucred *)-1) /* filesystem credential */
73 * This is the external representation of struct ucred, based upon the
74 * size of a 4.2-RELEASE struct ucred. There will probably never be
75 * any need to change the size of this or layout of its used fields.
78 u_int cr_version; /* structure layout version */
79 uid_t cr_uid; /* effective user id */
80 short cr_ngroups; /* number of groups */
81 gid_t cr_groups[NGROUPS]; /* groups */
82 void *_cr_unused1; /* compatibility with old ucred */
84 #define XUCRED_VERSION 0
90 struct ucred *change_euid (uid_t euid);
91 struct ucred *change_ruid (uid_t ruid);
92 struct ucred *cratom (struct ucred **pcr);
93 struct ucred *cratom_proc (struct proc *p);
94 struct ucred *crcopy (struct ucred *cr);
95 struct ucred *crdup (struct ucred *cr);
96 void crfree (struct ucred *cr);
97 void crinit (struct ucred *cr);
98 struct ucred *crget (void);
99 struct ucred *crhold (struct ucred *cr);
100 void cru2x (struct ucred *cr, struct xucred *xcr);
101 int groupmember (gid_t gid, struct ucred *cred);
104 #endif /* !_SYS_UCRED_H_ */