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29 * @(#)ucred.h 8.4 (Berkeley) 1/9/95
36 #include <bsm/audit.h>
41 * Please do not inspect cr_uid directly to determine superuserness. The
42 * priv(9) interface should be used to check for privilege.
44 #if defined(_KERNEL) || defined(_WANT_UCRED)
46 u_int cr_ref; /* reference count */
47 #define cr_startcopy cr_uid
48 uid_t cr_uid; /* effective user id */
49 uid_t cr_ruid; /* real user id */
50 uid_t cr_svuid; /* saved user id */
51 int cr_ngroups; /* number of groups */
52 gid_t cr_rgid; /* real group id */
53 gid_t cr_svgid; /* saved group id */
54 struct uidinfo *cr_uidinfo; /* per euid resource consumption */
55 struct uidinfo *cr_ruidinfo; /* per ruid resource consumption */
56 struct prison *cr_prison; /* jail(2) */
57 void *cr_pspare; /* general use */
58 u_int cr_flags; /* credential flags */
59 void *cr_pspare2[2]; /* general use 2 */
60 #define cr_endcopy cr_label
61 struct label *cr_label; /* MAC label */
62 struct auditinfo_addr cr_audit; /* Audit properties. */
63 gid_t *cr_groups; /* groups */
64 int cr_agroups; /* Available groups */
66 #define NOCRED ((struct ucred *)0) /* no credential available */
67 #define FSCRED ((struct ucred *)-1) /* filesystem credential */
68 #endif /* _KERNEL || _WANT_UCRED */
73 * This is the external representation of struct ucred.
76 u_int cr_version; /* structure layout version */
77 uid_t cr_uid; /* effective user id */
78 short cr_ngroups; /* number of groups */
79 gid_t cr_groups[XU_NGROUPS]; /* groups */
80 void *_cr_unused1; /* compatibility with old ucred */
82 #define XUCRED_VERSION 0
84 /* This can be used for both ucred and xucred structures. */
85 #define cr_gid cr_groups[0]
91 void change_egid(struct ucred *newcred, gid_t egid);
92 void change_euid(struct ucred *newcred, struct uidinfo *euip);
93 void change_rgid(struct ucred *newcred, gid_t rgid);
94 void change_ruid(struct ucred *newcred, struct uidinfo *ruip);
95 void change_svgid(struct ucred *newcred, gid_t svgid);
96 void change_svuid(struct ucred *newcred, uid_t svuid);
97 void crcopy(struct ucred *dest, struct ucred *src);
98 struct ucred *crcopysafe(struct proc *p, struct ucred *cr);
99 struct ucred *crdup(struct ucred *cr);
100 void cred_update_thread(struct thread *td);
101 void crfree(struct ucred *cr);
102 struct ucred *crget(void);
103 struct ucred *crhold(struct ucred *cr);
104 int crshared(struct ucred *cr);
105 void cru2x(struct ucred *cr, struct xucred *xcr);
106 void crsetgroups(struct ucred *cr, int n, gid_t *groups);
107 int groupmember(gid_t gid, struct ucred *cred);
110 #endif /* !_SYS_UCRED_H_ */