include/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 2009 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 #include <sys/types.h>
  33 #include <sys/procfs.h>
  34 #include <sys/cred.h>
  35 #include <sys/priv.h>
  36
  37 #ifdef _KERNEL
  38 #include <c2/audit.h>
  39 #else
  40 #include <bsm/audit.h>
  41 #endif
  42
  43 #ifndef _KERNEL
  44 #include <unistd.h>
  45 #endif
  46
  47 #ifdef  __cplusplus
  48 extern "C" {
  49 #endif
  50
  51
  52
  53 #if defined(_KERNEL) || _STRUCTURED_PROC != 0
  54 /*
  55  * bitness neutral struct
  56  *
  57  * Add new fixed fields at the end of the structure.
  58  */
  59 struct ucred_s {
  60         uint32_t        uc_size;        /* Size of the full structure */
  61         uint32_t        uc_credoff;     /* Credential offset: 0 - no cred */
  62         uint32_t        uc_privoff;     /* Privilege offset: 0 - no privs */
  63         pid_t           uc_pid;         /* Process id */
  64         uint32_t        uc_audoff;      /* Audit info offset: 0 - no aud */
  65         zoneid_t        uc_zoneid;      /* Zone id */
  66         projid_t        uc_projid;      /* Project id */
  67                                         /* The rest goes here */
  68 };
  69
  70 /* Get the process credentials */
  71 #define UCCRED(uc)      (prcred_t *)(((uc)->uc_credoff == 0) ? NULL : \
  72                                 ((char *)(uc)) + (uc)->uc_credoff)
  73
  74 /* Get the process privileges */
  75 #define UCPRIV(uc)      (prpriv_t *)(((uc)->uc_privoff == 0) ? NULL : \
  76                                 ((char *)(uc)) + (uc)->uc_privoff)
  77
  78 /* Get the process audit info */
  79 #define UCAUD(uc)       (auditinfo64_addr_t *)(((uc)->uc_audoff == 0) ? NULL : \
  80                                 ((char *)(uc)) + (uc)->uc_audoff)
  81
  82 #endif /* _KERNEL || _STRUCTURED_PROC != 0 */
  83
  84 /*
  85  * SYS_ucredsys subcodes.
  86  */
  87 #define UCREDSYS_UCREDGET       0
  88 #define UCREDSYS_GETPEERUCRED   1
  89
  90 #ifdef _KERNEL
  91
  92 extern uint32_t ucredminsize(const cred_t *);
  93
  94 #define UCRED_PRIV_OFF  (sizeof (struct ucred_s))
  95 #define UCRED_AUD_OFF   (UCRED_PRIV_OFF + priv_prgetprivsize(NULL))
  96 /* The prcred_t has a variable size; it should be last. */
  97 #define UCRED_CRED_OFF  (UCRED_AUD_OFF + get_audit_ucrsize())
  98
  99 #define UCRED_SIZE      (UCRED_CRED_OFF + sizeof (prcred_t) + \
 100                             (ngroups_max - 1) * sizeof (gid_t))
 101
 102
 103 struct proc;
 104
 105 extern struct ucred_s *pgetucred(struct proc *);
 106 extern struct ucred_s *cred2ucred(const cred_t *, pid_t, void *,
 107     const cred_t *);
 108 extern int get_audit_ucrsize(void);
 109
 110 #else
 111
 112 /* Definition only valid for structured proc. */
 113 #if _STRUCTURED_PROC != 0
 114 #define UCRED_SIZE(ip)  (sizeof (struct ucred_s) + sizeof (prcred_t) + \
 115                         ((int)sysconf(_SC_NGROUPS_MAX) - 1) * sizeof (gid_t) + \
 116                         sizeof (prpriv_t) + \
 117                         sizeof (priv_chunk_t) * \
 118                         ((ip)->priv_setsize * (ip)->priv_nsets - 1) + \
 119                         (ip)->priv_infosize + \
 120                         sizeof (auditinfo64_addr_t))
 121 #endif
 122
 123 extern struct ucred_s *_ucred_alloc(void);
 124
 125 #endif
 126
 127 #ifdef  __cplusplus
 128 }
 129 #endif
 130
 131 #endif  /* _SYS_UCRED_H */