2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
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15 * This product includes software developed by the University of
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33 * @(#)ucred.h 8.4 (Berkeley) 1/9/95
34 * $FreeBSD: src/sys/sys/ucred.h,v 1.14.2.5 2002/03/09 05:20:25 dd Exp $
35 * $DragonFly: src/sys/sys/ucred.h,v 1.6 2003/08/20 07:31:22 rob Exp $
46 * Please do not inspect cr_uid directly to determine superuserness.
47 * Only the suser()/suser_cred() function should be used for this.
50 u_int cr_ref; /* reference count */
51 uid_t cr_uid; /* effective user id */
52 short cr_ngroups; /* number of groups */
53 gid_t cr_groups[NGROUPS]; /* groups */
54 struct uidinfo *cr_uidinfo; /* per uid resource consumption */
55 struct uidinfo *cr_ruidinfo; /* per ruid resource consumption */
56 struct prison *cr_prison; /* prison info */
57 uid_t cr_ruid; /* Real user id. */
58 uid_t cr_svuid; /* Saved effective user id. */
59 gid_t cr_rgid; /* Real group id. */
60 gid_t cr_svgid; /* Saved effective group id. */
61 int cr_refcnt; /* Number of references. */
63 #define cr_gid cr_groups[0]
64 #define NOCRED ((struct ucred *)0) /* no credential available */
65 #define FSCRED ((struct ucred *)-1) /* filesystem credential */
68 * This is the external representation of struct ucred, based upon the
69 * size of a 4.2-RELEASE struct ucred. There will probably never be
70 * any need to change the size of this or layout of its used fields.
73 u_int cr_version; /* structure layout version */
74 uid_t cr_uid; /* effective user id */
75 short cr_ngroups; /* number of groups */
76 gid_t cr_groups[NGROUPS]; /* groups */
77 void *_cr_unused1; /* compatibility with old ucred */
79 #define XUCRED_VERSION 0
85 void change_euid (uid_t euid);
86 void change_ruid (uid_t ruid);
87 struct ucred *cratom (struct ucred **pcr);
88 struct ucred *crcopy (struct ucred *cr);
89 struct ucred *crdup (struct ucred *cr);
90 void crfree (struct ucred *cr);
91 struct ucred *crget (void);
92 struct ucred *crhold (struct ucred *cr);
93 void cru2x (struct ucred *cr, struct xucred *xcr);
94 int groupmember (gid_t gid, struct ucred *cred);
97 #endif /* !_SYS_UCRED_H_ */