usr/src/uts/common/sys/ucred.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 2006 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  *
  25  * File with private definitions for the ucred structure for use by the
  26  * kernel and library routines.
  27  */
  28
  29 #ifndef _SYS_UCRED_H
  30 #define _SYS_UCRED_H
  31
  32 #pragma ident   "%Z%%M% %I%     %E% SMI"
  33
  34 #include <sys/types.h>
  35 #include <sys/procfs.h>
  36 #include <sys/cred.h>
  37 #include <sys/priv.h>
  38 #include <sys/tsol/label.h>
  39 #include <sys/tsol/label_macro.h>
  40
  41 #ifdef _KERNEL
  42 #include <c2/audit.h>
  43 #else
  44 #include <bsm/audit.h>
  45 #endif
  46
  47 #ifndef _KERNEL
  48 #include <unistd.h>
  49 #endif
  50
  51 #ifdef  __cplusplus
  52 extern "C" {
  53 #endif
  54
  55
  56
  57 #if defined(_KERNEL) || _STRUCTURED_PROC != 0
  58 /*
  59  * bitness neutral struct
  60  *
  61  * Add new fixed fields at the end of the structure.
  62  */
  63 struct ucred_s {
  64         uint32_t        uc_size;        /* Size of the full structure */
  65         uint32_t        uc_credoff;     /* Credential offset: 0 - no cred */
  66         uint32_t        uc_privoff;     /* Privilege offset: 0 - no privs */
  67         pid_t           uc_pid;         /* Process id */
  68         uint32_t        uc_audoff;      /* Audit info offset: 0 - no aud */
  69         zoneid_t        uc_zoneid;      /* Zone id */
  70         projid_t        uc_projid;      /* Project id */
  71         uint32_t        uc_labeloff;    /* label offset: 0 - no label */
  72                                         /* The rest goes here */
  73 };
  74
  75 /* Get the process credentials */
  76 #define UCCRED(uc)      (prcred_t *)(((uc)->uc_credoff == 0) ? NULL : \
  77                                 ((char *)(uc)) + (uc)->uc_credoff)
  78
  79 /* Get the process privileges */
  80 #define UCPRIV(uc)      (prpriv_t *)(((uc)->uc_privoff == 0) ? NULL : \
  81                                 ((char *)(uc)) + (uc)->uc_privoff)
  82
  83 /* Get the process audit info */
  84 #define UCAUD(uc)       (auditinfo64_addr_t *)(((uc)->uc_audoff == 0) ? NULL : \
  85                                 ((char *)(uc)) + (uc)->uc_audoff)
  86
  87 /* Get peer security label info */
  88 #define UCLABEL(uc)     (bslabel_t *)(((uc)->uc_labeloff == 0) ? NULL : \
  89                                 ((char *)(uc)) + (uc)->uc_labeloff)
  90
  91 #define UCRED_CRED_OFF  (sizeof (struct ucred_s))
  92
  93 #endif /* _KERNEL || _STRUCTURED_PROC != 0 */
  94
  95 /*
  96  * SYS_ucredsys subcodes.
  97  */
  98 #define UCREDSYS_UCREDGET       0
  99 #define UCREDSYS_GETPEERUCRED   1
 100
 101 #ifdef _KERNEL
 102
 103 extern uint32_t ucredsize;
 104
 105 #define UCRED_PRIV_OFF  (UCRED_CRED_OFF + sizeof (prcred_t) + \
 106                             (ngroups_max - 1) * sizeof (gid_t))
 107 #define UCRED_AUD_OFF   (UCRED_PRIV_OFF + priv_prgetprivsize(NULL))
 108 #define UCRED_LABEL_OFF (UCRED_AUD_OFF + get_audit_ucrsize())
 109 #define UCRED_SIZE      (UCRED_LABEL_OFF + sizeof (bslabel_t))
 110
 111 struct proc;
 112
 113 extern struct ucred_s *pgetucred(struct proc *);
 114 extern struct ucred_s *cred2ucred(const cred_t *, pid_t, void *,
 115     const cred_t *);
 116 extern int get_audit_ucrsize(void);
 117
 118 #else
 119
 120 /* Definition only valid for structured proc. */
 121 #if _STRUCTURED_PROC != 0
 122 #define UCRED_SIZE(ip)  (sizeof (struct ucred_s) + sizeof (prcred_t) + \
 123                         ((int)sysconf(_SC_NGROUPS_MAX) - 1) * sizeof (gid_t) + \
 124                         sizeof (prpriv_t) + \
 125                         sizeof (priv_chunk_t) * \
 126                         ((ip)->priv_setsize * (ip)->priv_nsets - 1) + \
 127                         (ip)->priv_infosize + \
 128                         sizeof (auditinfo64_addr_t) + \
 129                         sizeof (bslabel_t))
 130 #endif
 131
 132 extern struct ucred_s *_ucred_alloc(void);
 133
 134 #endif
 135
 136 #ifdef  __cplusplus
 137 }
 138 #endif
 139
 140 #endif  /* _SYS_UCRED_H */