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31 * @(#)ucred.h 8.4 (Berkeley) 1/9/95
38 #if defined(_KERNEL) || defined(_WANT_UCRED)
39 #include <sys/_lock.h>
40 #include <sys/_mutex.h>
42 #include <bsm/audit.h>
51 * Please do not inspect cr_uid directly to determine superuserness. The
52 * priv(9) interface should be used to check for privilege.
57 * Unmarked fields are constant after creation.
59 * See "Credential management" comment in kern_prot.c for more information.
61 #if defined(_KERNEL) || defined(_WANT_UCRED)
64 u_int cr_ref; /* (c) reference count */
65 u_int cr_users; /* (c) proc + thread using this cred */
66 struct auditinfo_addr cr_audit; /* Audit properties. */
67 #define cr_startcopy cr_uid
68 uid_t cr_uid; /* effective user id */
69 uid_t cr_ruid; /* real user id */
70 uid_t cr_svuid; /* saved user id */
71 int cr_ngroups; /* number of groups */
72 gid_t cr_rgid; /* real group id */
73 gid_t cr_svgid; /* saved group id */
74 struct uidinfo *cr_uidinfo; /* per euid resource consumption */
75 struct uidinfo *cr_ruidinfo; /* per ruid resource consumption */
76 struct prison *cr_prison; /* jail(2) */
77 struct loginclass *cr_loginclass; /* login class */
78 u_int cr_flags; /* credential flags */
79 void *cr_pspare2[2]; /* general use 2 */
80 #define cr_endcopy cr_label
81 struct label *cr_label; /* MAC label */
82 gid_t *cr_groups; /* groups */
83 int cr_agroups; /* Available groups */
84 gid_t cr_smallgroups[XU_NGROUPS]; /* storage for small groups */
86 #define NOCRED ((struct ucred *)0) /* no credential available */
87 #define FSCRED ((struct ucred *)-1) /* filesystem credential */
88 #endif /* _KERNEL || _WANT_UCRED */
93 #define CRED_FLAG_CAPMODE 0x00000001 /* In capability mode. */
96 * This is the external representation of struct ucred.
99 u_int cr_version; /* structure layout version */
100 uid_t cr_uid; /* effective user id */
101 short cr_ngroups; /* number of groups */
102 gid_t cr_groups[XU_NGROUPS]; /* groups */
104 void *_cr_unused1; /* compatibility with old ucred */
108 #define XUCRED_VERSION 0
110 /* This can be used for both ucred and xucred structures. */
111 #define cr_gid cr_groups[0]
124 credbatch_prep(struct credbatch *crb)
130 void credbatch_add(struct credbatch *crb, struct thread *td);
132 credbatch_process(struct credbatch *crb __unused)
136 void credbatch_add(struct credbatch *crb, struct thread *td);
137 void credbatch_final(struct credbatch *crb);
139 void change_egid(struct ucred *newcred, gid_t egid);
140 void change_euid(struct ucred *newcred, struct uidinfo *euip);
141 void change_rgid(struct ucred *newcred, gid_t rgid);
142 void change_ruid(struct ucred *newcred, struct uidinfo *ruip);
143 void change_svgid(struct ucred *newcred, gid_t svgid);
144 void change_svuid(struct ucred *newcred, uid_t svuid);
145 void crcopy(struct ucred *dest, struct ucred *src);
146 struct ucred *crcopysafe(struct proc *p, struct ucred *cr);
147 struct ucred *crdup(struct ucred *cr);
148 void crextend(struct ucred *cr, int n);
149 void proc_set_cred_init(struct proc *p, struct ucred *cr);
150 void proc_set_cred(struct proc *p, struct ucred *cr);
151 void proc_unset_cred(struct proc *p);
152 void crfree(struct ucred *cr);
153 struct ucred *crcowsync(void);
154 struct ucred *crget(void);
155 struct ucred *crhold(struct ucred *cr);
156 struct ucred *crcowget(struct ucred *cr);
157 void crcowfree(struct thread *td);
158 void cru2x(struct ucred *cr, struct xucred *xcr);
159 void cru2xt(struct thread *td, struct xucred *xcr);
160 void crsetgroups(struct ucred *cr, int n, gid_t *groups);
161 int groupmember(gid_t gid, struct ucred *cred);
164 #endif /* !_SYS_UCRED_H_ */