usr/src/uts/common/sys/cred_impl.h

   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 2011 Nexenta Systems, Inc.  All rights reserved.
  23  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #ifndef _SYS_CRED_IMPL_H
  28 #define _SYS_CRED_IMPL_H
  29
  30 #include <sys/types.h>
  31 #include <sys/cred.h>
  32 #include <sys/priv_impl.h>
  33 #include <sys/sid.h>
  34
  35 #ifdef  __cplusplus
  36 extern "C" {
  37 #endif
  38
  39 /*
  40  * The user credential implementation.
  41  *
  42  * This is is not a public interface.  This file must not be included
  43  * except by those routines in Solaris proper that implement credential
  44  * manipulation and kernel policy.
  45  *
  46  * Credentials are shared, and therefor read-only, data structure.
  47  * After finalization, on the cr_ref field is changed through crhold/crfree.
  48  *
  49  * Kernel modules that need access to fields of cred_t should use the
  50  * accessor functions defined in <sys/cred.h>
  51  *
  52  * The size of the cr_groups[] array is configurable but is the same
  53  * (ngroups_max) for all cred_impl structures; cr_ngroups records the number
  54  * of elements currently in use, not the array size.
  55  *
  56  * Changes in the implementation will move cr_groups[] around.
  57  *
  58  * Properly sized cred_t structures are only returned by crget()/crdup()
  59  * crcopy().  It is not possible to declare one.
  60  */
  61
  62 #if defined(_KERNEL) || defined(_KMEMUSER)
  63
  64 struct zone;            /* forward reference */
  65 struct ts_label_s;      /* forward reference */
  66 struct credklpd;        /* forward reference */
  67
  68 /* Supplemental groups list. */
  69 typedef struct credgrp {
  70         uint_t          crg_ref;
  71         uint_t          crg_ngroups;
  72         gid_t           crg_groups[1];
  73 } credgrp_t;
  74
  75 struct cred {
  76         uint_t          cr_ref;         /* reference count */
  77         uid_t           cr_uid;         /* effective user id */
  78         gid_t           cr_gid;         /* effective group id */
  79         uid_t           cr_ruid;        /* real user id */
  80         gid_t           cr_rgid;        /* real group id */
  81         uid_t           cr_suid;        /* "saved" user id (from exec) */
  82         gid_t           cr_sgid;        /* "saved" group id (from exec) */
  83         cred_priv_t     cr_priv;        /* privileges */
  84         projid_t        cr_projid;      /* project */
  85         struct zone     *cr_zone;       /* pointer to per-zone structure */
  86         struct ts_label_s *cr_label;    /* pointer to the effective label */
  87         struct credklpd *cr_klpd;       /* pointer to the cred's klpd */
  88         credsid_t       *cr_ksid;       /* pointer to SIDs */
  89         credgrp_t       *cr_grps;       /* supplemental groups */
  90                                         /* audit info is defined dynamically */
  91                                         /* and valid only when audit enabled */
  92         /* auditinfo_addr_t     cr_auinfo;      audit info */
  93 };
  94
  95 extern int ngroups_max;
  96
  97 #define CR_PRIVS(c)     (&(c)->cr_priv)
  98 #define CR_PRIVSETS(c)  (((c)->cr_priv.crprivs))
  99
 100 #endif  /* _KERNEL */
 101
 102 #ifdef  __cplusplus
 103 }
 104 #endif
 105
 106 #endif  /* _SYS_CRED_IMPL_H */