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 /* 23 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _SYS_SID_H 28 #define _SYS_SID_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #include <sys/types.h> 33 #include <sys/avl.h> 34 35 /* 36 * Kernel SID data structure and functions. 37 */ 38 #ifdef __cplusplus 39 extern "C" { 40 #endif 41 42 /* sidsys subcodes */ 43 #define SIDSYS_ALLOC_IDS 0 44 /* Flags for ALLOC_IDS */ 45 #define SID_EXTEND_RANGE 0 46 #define SID_NEW_RANGE 1 47 48 #define SIDSYS_IDMAP_REG 1 49 #define SIDSYS_IDMAP_UNREG 2 50 51 #define SIDSYS_SID2ID 0 52 #define SIDSYS_ID2SID 1 53 54 typedef struct domsid { 55 uint_t ds_rid; 56 char ds_dom[1]; 57 } domsid_t; 58 59 typedef struct sidmap_call { 60 int sc_type; 61 union sc_val_u { 62 uid_t sc_id; 63 domsid_t sc_sid; 64 } sc_val; 65 } sidmap_call_t; 66 67 68 #ifdef _KERNEL 69 /* Domains are stored in AVL trees so we can share them among SIDs */ 70 typedef struct ksiddomain { 71 uint_t kd_ref; 72 uint_t kd_len; 73 char *kd_name; /* Domain part of SID */ 74 avl_node_t kd_link; 75 } ksiddomain_t; 76 77 typedef struct ksid { 78 uid_t ks_id; /* Cache of (ephemeral) uid */ 79 uint32_t ks_rid; /* Rid part of the name */ 80 uint32_t ks_attr; /* Attribute */ 81 ksiddomain_t *ks_domain; /* Domain descsriptor */ 82 } ksid_t; 83 84 typedef enum ksid_index { 85 KSID_USER, 86 KSID_GROUP, 87 KSID_OWNER, 88 KSID_COUNT /* Must be last */ 89 } ksid_index_t; 90 91 /* 92 * As no memory may be allocated for credentials while holding p_crlock, 93 * all sub data structures need to be ref counted. 94 */ 95 96 typedef struct ksidlist { 97 uint_t ksl_ref; 98 uint_t ksl_nsid; 99 uint_t ksl_neid; /* Number of ids which are ephemeral */ 100 ksid_t ksl_sids[1]; /* Allocate ksl_nsid times */ 101 } ksidlist_t; 102 103 #define KSIDLIST_MEM(n) (sizeof (ksidlist_t) + ((n) - 1) * sizeof (ksid_t)) 104 105 typedef struct credsid { 106 uint_t kr_ref; /* Reference count */ 107 ksid_t kr_sidx[KSID_COUNT]; /* User, group, default owner */ 108 ksidlist_t *kr_sidlist; /* List of SIDS */ 109 } credsid_t; 110 111 const char *ksid_getdomain(ksid_t *); 112 uint_t ksid_getrid(ksid_t *); 113 114 int ksid_lookup(uid_t, ksid_t *); 115 void ksid_rele(ksid_t *); 116 117 credsid_t *kcrsid_alloc(void); 118 119 credsid_t *kcrsid_setsid(credsid_t *, ksid_t *, ksid_index_t); 120 credsid_t *kcrsid_setsidlist(credsid_t *, ksidlist_t *); 121 122 void kcrsid_rele(credsid_t *); 123 void kcrsid_hold(credsid_t *); 124 void kcrsidcopy_to(const credsid_t *okcr, credsid_t *nkcr); 125 126 void ksiddomain_rele(ksiddomain_t *); 127 void ksiddomain_hold(ksiddomain_t *); 128 void ksidlist_rele(ksidlist_t *); 129 void ksidlist_hold(ksidlist_t *); 130 131 ksiddomain_t *ksid_lookupdomain(const char *); 132 133 ksidlist_t *kcrsid_gidstosids(int, gid_t *); 134 135 int idmap_call_byid(uid_t, ksid_t *); 136 uid_t idmap_call_bysid(ksid_t *); 137 138 #else 139 140 int allocids(int, int, uid_t *, int, gid_t *); 141 int idmap_reg(int); 142 int idmap_unreg(int); 143 144 #endif /* _KERNEL */ 145 146 #ifdef __cplusplus 147 } 148 #endif 149 150 #endif /* _SYS_SID_H */ 151