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 2010 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 * 26 * Copyright 2013 Nexenta Systems, Inc. All rights reserved. 27 */ 28 29 #ifndef _SYS_SID_H 30 #define _SYS_SID_H 31 32 #include <sys/types.h> 33 #include <sys/avl.h> 34 #if defined(_KERNEL) || defined(_FAKE_KERNEL) 35 #include <sys/zone.h> 36 #endif 37 38 /* 39 * Kernel SID data structure and functions. 40 */ 41 #ifdef __cplusplus 42 extern "C" { 43 #endif 44 45 /* sidsys subcodes */ 46 #define SIDSYS_ALLOC_IDS 0 47 /* Flags for ALLOC_IDS */ 48 #define SID_EXTEND_RANGE 0 49 #define SID_NEW_RANGE 1 50 51 #define SIDSYS_IDMAP_REG 1 52 #define SIDSYS_IDMAP_UNREG 2 53 #define SIDSYS_IDMAP_FLUSH_KCACHE 3 54 55 #define SIDSYS_SID2ID 0 56 #define SIDSYS_ID2SID 1 57 58 #if defined(_KERNEL) || defined(_FAKE_KERNEL) 59 #define KSIDLIST_MEM(n) (sizeof (ksidlist_t) + ((n) - 1) * sizeof (ksid_t)) 60 61 /* Domains are stored in AVL trees so we can share them among SIDs */ 62 typedef struct ksiddomain { 63 uint_t kd_ref; 64 uint_t kd_len; 65 char *kd_name; /* Domain part of SID */ 66 avl_node_t kd_link; 67 } ksiddomain_t; 68 69 typedef struct ksid { 70 uid_t ks_id; /* Cache of (ephemeral) uid */ 71 uint32_t ks_rid; /* Rid part of the name */ 72 uint32_t ks_attr; /* Attribute */ 73 ksiddomain_t *ks_domain; /* Domain descsriptor */ 74 } ksid_t; 75 76 typedef enum ksid_index { 77 KSID_USER, 78 KSID_GROUP, 79 KSID_OWNER, 80 KSID_COUNT /* Must be last */ 81 } ksid_index_t; 82 83 /* 84 * As no memory may be allocated for credentials while holding p_crlock, 85 * all sub data structures need to be ref counted. 86 */ 87 88 typedef struct ksidlist { 89 uint_t ksl_ref; 90 uint_t ksl_nsid; 91 uint_t ksl_neid; /* Number of ids which are ephemeral */ 92 ksid_t ksl_sids[1]; /* Allocate ksl_nsid times */ 93 } ksidlist_t; 94 95 typedef struct credsid { 96 uint_t kr_ref; /* Reference count */ 97 ksid_t kr_sidx[KSID_COUNT]; /* User, group, default owner */ 98 ksidlist_t *kr_sidlist; /* List of SIDS */ 99 } credsid_t; 100 101 const char *ksid_getdomain(ksid_t *); 102 uint_t ksid_getrid(ksid_t *); 103 uid_t ksid_getid(ksid_t *); 104 105 int ksid_lookupbyuid(zone_t *, uid_t, ksid_t *); 106 int ksid_lookupbygid(zone_t *, gid_t, ksid_t *); 107 void ksid_rele(ksid_t *); 108 109 credsid_t *kcrsid_alloc(void); 110 111 credsid_t *kcrsid_setsid(credsid_t *, ksid_t *, ksid_index_t); 112 credsid_t *kcrsid_setsidlist(credsid_t *, ksidlist_t *); 113 114 void kcrsid_rele(credsid_t *); 115 void kcrsid_hold(credsid_t *); 116 void kcrsidcopy_to(const credsid_t *okcr, credsid_t *nkcr); 117 118 void ksiddomain_rele(ksiddomain_t *); 119 void ksiddomain_hold(ksiddomain_t *); 120 void ksidlist_rele(ksidlist_t *); 121 void ksidlist_hold(ksidlist_t *); 122 123 ksiddomain_t *ksid_lookupdomain(const char *); 124 125 ksidlist_t *kcrsid_gidstosids(zone_t *, int, gid_t *); 126 127 #else /* _KERNEL */ 128 129 int allocids(int, int, uid_t *, int, gid_t *); 130 int __idmap_reg(int); 131 int __idmap_unreg(int); 132 int __idmap_flush_kcache(void); 133 134 #endif /* _KERNEL */ 135 136 #ifdef __cplusplus 137 } 138 #endif 139 140 #endif /* _SYS_SID_H */ 141