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29 * @(#)ucred.h 8.4 (Berkeley) 1/9/95
36 #include <bsm/audit.h>
45 * Please do not inspect cr_uid directly to determine superuserness. The
46 * priv(9) interface should be used to check for privilege.
48 #if defined(_KERNEL) || defined(_WANT_UCRED)
50 u_int cr_ref; /* reference count */
51 #define cr_startcopy cr_uid
52 uid_t cr_uid; /* effective user id */
53 uid_t cr_ruid; /* real user id */
54 uid_t cr_svuid; /* saved user id */
55 int cr_ngroups; /* number of groups */
56 gid_t cr_rgid; /* real group id */
57 gid_t cr_svgid; /* saved group id */
58 struct uidinfo *cr_uidinfo; /* per euid resource consumption */
59 struct uidinfo *cr_ruidinfo; /* per ruid resource consumption */
60 struct prison *cr_prison; /* jail(2) */
61 struct loginclass *cr_loginclass; /* login class */
62 u_int cr_flags; /* credential flags */
63 void *cr_pspare2[2]; /* general use 2 */
64 #define cr_endcopy cr_label
65 struct label *cr_label; /* MAC label */
66 struct auditinfo_addr cr_audit; /* Audit properties. */
67 gid_t *cr_groups; /* groups */
68 int cr_agroups; /* Available groups */
69 gid_t cr_smallgroups[XU_NGROUPS]; /* storage for small groups */
71 #define NOCRED ((struct ucred *)0) /* no credential available */
72 #define FSCRED ((struct ucred *)-1) /* filesystem credential */
73 #endif /* _KERNEL || _WANT_UCRED */
78 #define CRED_FLAG_CAPMODE 0x00000001 /* In capability mode. */
81 * This is the external representation of struct ucred.
84 u_int cr_version; /* structure layout version */
85 uid_t cr_uid; /* effective user id */
86 short cr_ngroups; /* number of groups */
87 gid_t cr_groups[XU_NGROUPS]; /* groups */
88 void *_cr_unused1; /* compatibility with old ucred */
90 #define XUCRED_VERSION 0
92 /* This can be used for both ucred and xucred structures. */
93 #define cr_gid cr_groups[0]
99 void change_egid(struct ucred *newcred, gid_t egid);
100 void change_euid(struct ucred *newcred, struct uidinfo *euip);
101 void change_rgid(struct ucred *newcred, gid_t rgid);
102 void change_ruid(struct ucred *newcred, struct uidinfo *ruip);
103 void change_svgid(struct ucred *newcred, gid_t svgid);
104 void change_svuid(struct ucred *newcred, uid_t svuid);
105 void crcopy(struct ucred *dest, struct ucred *src);
106 struct ucred *crcopysafe(struct proc *p, struct ucred *cr);
107 struct ucred *crdup(struct ucred *cr);
108 void cred_update_thread(struct thread *td);
109 void proc_set_cred_init(struct proc *p, struct ucred *cr);
110 struct ucred *proc_set_cred(struct proc *p, struct ucred *cr);
111 void crfree(struct ucred *cr);
112 struct ucred *crget(void);
113 struct ucred *crhold(struct ucred *cr);
114 void cru2x(struct ucred *cr, struct xucred *xcr);
115 void crsetgroups(struct ucred *cr, int n, gid_t *groups);
116 int groupmember(gid_t gid, struct ucred *cred);
119 #endif /* !_SYS_UCRED_H_ */