xref: /titanic_51/usr/src/uts/common/sys/cred_impl.h (revision 37714ae43602c675f9dc59b070bfdf9fa702872c)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 /*
22  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
23  * Use is subject to license terms.
24  */
25 
26 #ifndef _SYS_CRED_IMPL_H
27 #define	_SYS_CRED_IMPL_H
28 
29 #pragma ident	"%Z%%M%	%I%	%E% SMI"
30 
31 #include <sys/types.h>
32 #include <sys/cred.h>
33 #include <sys/priv_impl.h>
34 #include <sys/sid.h>
35 
36 #ifdef	__cplusplus
37 extern "C" {
38 #endif
39 
40 /*
41  * The user credential implementation.
42  *
43  * This is is not a public interface.  This file must not be included
44  * except by those routines in Solaris proper that implement credential
45  * manipulation and kernel policy.
46  *
47  * Credentials are shared, and therefor read-only, data structure.
48  * After finalization, on the cr_ref field is changed through crhold/crfree.
49  *
50  * Kernel modules that need access to fields of cred_t should use the
51  * accessor functions defined in <sys/cred.h>
52  *
53  * The size of the cr_groups[] array is configurable but is the same
54  * (ngroups_max) for all cred_impl structures; cr_ngroups records the number
55  * of elements currently in use, not the array size.
56  *
57  * Changes in the implementation will move cr_groups[] around.
58  *
59  * Properly sized cred_t structures are only returned by crget()/crdup()
60  * crcopy().  It is not possible to declare one.
61  */
62 
63 #if defined(_KERNEL) || defined(_KMEMUSER)
64 
65 struct zone;		/* forward reference */
66 struct ts_label_s;	/* forward reference */
67 struct credklpd;	/* forward reference */
68 
69 struct cred {
70 	uint_t		cr_ref;		/* reference count */
71 	uid_t		cr_uid;		/* effective user id */
72 	gid_t		cr_gid;		/* effective group id */
73 	uid_t		cr_ruid;	/* real user id */
74 	gid_t		cr_rgid;	/* real group id */
75 	uid_t		cr_suid;	/* "saved" user id (from exec) */
76 	gid_t		cr_sgid;	/* "saved" group id (from exec) */
77 	uint_t		cr_ngroups;	/* number of groups returned by */
78 					/* crgroups() */
79 	cred_priv_t	cr_priv;	/* privileges */
80 	projid_t	cr_projid;	/* project */
81 	struct zone	*cr_zone;	/* pointer to per-zone structure */
82 	struct ts_label_s *cr_label;	/* pointer to the effective label */
83 	struct credklpd *cr_klpd;	/* pointer to the cred's klpd */
84 	credsid_t	*cr_ksid;	/* pointer to SIDs */
85 	gid_t		cr_groups[1];	/* cr_groups size not fixed */
86 					/* audit info is defined dynamically */
87 					/* and valid only when audit enabled */
88 	/* auditinfo_addr_t	cr_auinfo;	audit info */
89 };
90 
91 extern int ngroups_max;
92 
93 #define	CR_PRIVS(c)	(&(c)->cr_priv)
94 #define	CR_PRIVSETS(c)	(((c)->cr_priv.crprivs))
95 
96 #endif	/* _KERNEL */
97 
98 #ifdef	__cplusplus
99 }
100 #endif
101 
102 #endif	/* _SYS_CRED_IMPL_H */
103