1 /*- 2 * Copyright (c) 2005 Apple Inc. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. Neither the name of Apple Inc. ("Apple") nor the names of 15 * its contributors may be used to endorse or promote products derived 16 * from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 19 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 21 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 22 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 25 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 * 29 * P4: //depot/projects/trustedbsd/openbsm/sys/bsm/audit.h#4 30 * $FreeBSD$ 31 */ 32 33 #ifndef _BSM_AUDIT_H 34 #define _BSM_AUDIT_H 35 36 #ifdef __APPLE__ 37 /* Temporary until rdar://problem/6133383 is resolved. */ 38 #include <sys/types.h> 39 #include <sys/param.h> 40 #include <sys/socket.h> 41 #include <sys/cdefs.h> 42 #include <sys/queue.h> 43 #endif /* __APPLE__ */ 44 45 #define AUDIT_RECORD_MAGIC 0x828a0f1b 46 #define MAX_AUDIT_RECORDS 20 47 #define MAXAUDITDATA (0x8000 - 1) 48 #define MAX_AUDIT_RECORD_SIZE MAXAUDITDATA 49 #define MIN_AUDIT_FILE_SIZE (512 * 1024) 50 51 /* 52 * Minimum noumber of free blocks on the filesystem containing the audit 53 * log necessary to avoid a hard log rotation. DO NOT SET THIS VALUE TO 0 54 * as the kernel does an unsigned compare, plus we want to leave a few blocks 55 * free so userspace can terminate the log, etc. 56 */ 57 #define AUDIT_HARD_LIMIT_FREE_BLOCKS 4 58 59 /* 60 * Triggers for the audit daemon. 61 */ 62 #define AUDIT_TRIGGER_MIN 1 63 #define AUDIT_TRIGGER_LOW_SPACE 1 /* Below low watermark. */ 64 #define AUDIT_TRIGGER_ROTATE_KERNEL 2 /* Kernel requests rotate. */ 65 #define AUDIT_TRIGGER_READ_FILE 3 /* Re-read config file. */ 66 #define AUDIT_TRIGGER_CLOSE_AND_DIE 4 /* Terminate audit. */ 67 #define AUDIT_TRIGGER_NO_SPACE 5 /* Below min free space. */ 68 #define AUDIT_TRIGGER_ROTATE_USER 6 /* User requests rotate. */ 69 #define AUDIT_TRIGGER_INITIALIZE 7 /* Initialize audit. */ 70 #define AUDIT_TRIGGER_MAX 7 71 72 /* 73 * The special device filename (FreeBSD). 74 */ 75 #define AUDITDEV_FILENAME "audit" 76 #define AUDIT_TRIGGER_FILE ("/dev/" AUDITDEV_FILENAME) 77 78 /* 79 * Pre-defined audit IDs 80 */ 81 #define AU_DEFAUDITID (uid_t)(-1) 82 #define AU_DEFAUDITSID 0 83 #define AU_ASSIGN_ASID -1 84 85 /* 86 * IPC types. 87 */ 88 #define AT_IPC_MSG ((u_char)1) /* Message IPC id. */ 89 #define AT_IPC_SEM ((u_char)2) /* Semaphore IPC id. */ 90 #define AT_IPC_SHM ((u_char)3) /* Shared mem IPC id. */ 91 92 /* 93 * Audit conditions. 94 */ 95 #define AUC_UNSET 0 96 #define AUC_AUDITING 1 97 #define AUC_NOAUDIT 2 98 #define AUC_DISABLED -1 99 100 /* 101 * auditon(2) commands. 102 */ 103 #define A_GETPOLICY 2 104 #define A_SETPOLICY 3 105 #define A_GETKMASK 4 106 #define A_SETKMASK 5 107 #define A_GETQCTRL 6 108 #define A_SETQCTRL 7 109 #define A_GETCWD 8 110 #define A_GETCAR 9 111 #define A_GETSTAT 12 112 #define A_SETSTAT 13 113 #define A_SETUMASK 14 114 #define A_SETSMASK 15 115 #define A_GETCOND 20 116 #define A_SETCOND 21 117 #define A_GETCLASS 22 118 #define A_SETCLASS 23 119 #define A_GETPINFO 24 120 #define A_SETPMASK 25 121 #define A_SETFSIZE 26 122 #define A_GETFSIZE 27 123 #define A_GETPINFO_ADDR 28 124 #define A_GETKAUDIT 29 125 #define A_SETKAUDIT 30 126 #define A_SENDTRIGGER 31 127 #define A_GETSINFO_ADDR 32 128 129 /* 130 * Audit policy controls. 131 */ 132 #define AUDIT_CNT 0x0001 133 #define AUDIT_AHLT 0x0002 134 #define AUDIT_ARGV 0x0004 135 #define AUDIT_ARGE 0x0008 136 #define AUDIT_SEQ 0x0010 137 #define AUDIT_WINDATA 0x0020 138 #define AUDIT_USER 0x0040 139 #define AUDIT_GROUP 0x0080 140 #define AUDIT_TRAIL 0x0100 141 #define AUDIT_PATH 0x0200 142 #define AUDIT_SCNT 0x0400 143 #define AUDIT_PUBLIC 0x0800 144 #define AUDIT_ZONENAME 0x1000 145 #define AUDIT_PERZONE 0x2000 146 147 /* 148 * Default audit queue control parameters. 149 */ 150 #define AQ_HIWATER 100 151 #define AQ_MAXHIGH 10000 152 #define AQ_LOWATER 10 153 #define AQ_BUFSZ MAXAUDITDATA 154 #define AQ_MAXBUFSZ 1048576 155 156 /* 157 * Default minimum percentage free space on file system. 158 */ 159 #define AU_FS_MINFREE 20 160 161 /* 162 * Type definitions used indicating the length of variable length addresses 163 * in tokens containing addresses, such as header fields. 164 */ 165 #define AU_IPv4 4 166 #define AU_IPv6 16 167 168 __BEGIN_DECLS 169 170 typedef uid_t au_id_t; 171 typedef pid_t au_asid_t; 172 typedef u_int16_t au_event_t; 173 typedef u_int16_t au_emod_t; 174 typedef u_int32_t au_class_t; 175 176 struct au_tid { 177 dev_t port; 178 u_int32_t machine; 179 }; 180 typedef struct au_tid au_tid_t; 181 182 struct au_tid_addr { 183 dev_t at_port; 184 u_int32_t at_type; 185 u_int32_t at_addr[4]; 186 }; 187 typedef struct au_tid_addr au_tid_addr_t; 188 189 struct au_mask { 190 unsigned int am_success; /* Success bits. */ 191 unsigned int am_failure; /* Failure bits. */ 192 }; 193 typedef struct au_mask au_mask_t; 194 195 struct auditinfo { 196 au_id_t ai_auid; /* Audit user ID. */ 197 au_mask_t ai_mask; /* Audit masks. */ 198 au_tid_t ai_termid; /* Terminal ID. */ 199 au_asid_t ai_asid; /* Audit session ID. */ 200 }; 201 typedef struct auditinfo auditinfo_t; 202 203 struct auditinfo_addr { 204 au_id_t ai_auid; /* Audit user ID. */ 205 au_mask_t ai_mask; /* Audit masks. */ 206 au_tid_addr_t ai_termid; /* Terminal ID. */ 207 au_asid_t ai_asid; /* Audit session ID. */ 208 u_int64_t ai_flags; /* Audit session flags. */ 209 }; 210 typedef struct auditinfo_addr auditinfo_addr_t; 211 212 struct auditpinfo { 213 pid_t ap_pid; /* ID of target process. */ 214 au_id_t ap_auid; /* Audit user ID. */ 215 au_mask_t ap_mask; /* Audit masks. */ 216 au_tid_t ap_termid; /* Terminal ID. */ 217 au_asid_t ap_asid; /* Audit session ID. */ 218 u_int64_t ap_flags; /* Audit session flags. */ 219 }; 220 typedef struct auditpinfo auditpinfo_t; 221 222 struct auditpinfo_addr { 223 pid_t ap_pid; /* ID of target process. */ 224 au_id_t ap_auid; /* Audit user ID. */ 225 au_mask_t ap_mask; /* Audit masks. */ 226 au_tid_addr_t ap_termid; /* Terminal ID. */ 227 au_asid_t ap_asid; /* Audit session ID. */ 228 }; 229 typedef struct auditpinfo_addr auditpinfo_addr_t; 230 231 struct au_session { 232 auditinfo_addr_t *as_aia_p; /* Ptr to full audit info. */ 233 #define as_asid as_aia_p->ai_asid 234 #define as_auid as_aia_p->ai_auid 235 #define as_termid as_aia_p->ai_termid 236 237 au_mask_t as_mask; /* Process Audit Masks. */ 238 }; 239 typedef struct au_session au_session_t; 240 241 /* 242 * Contents of token_t are opaque outside of libbsm. 243 */ 244 typedef struct au_token token_t; 245 246 /* 247 * Kernel audit queue control parameters. 248 */ 249 struct au_qctrl { 250 size_t aq_hiwater; 251 size_t aq_lowater; 252 size_t aq_bufsz; 253 clock_t aq_delay; 254 int aq_minfree; /* Minimum filesystem percent free space. */ 255 }; 256 typedef struct au_qctrl au_qctrl_t; 257 258 /* 259 * Structure for the audit statistics. 260 */ 261 struct audit_stat { 262 unsigned int as_version; 263 unsigned int as_numevent; 264 int as_generated; 265 int as_nonattrib; 266 int as_kernel; 267 int as_audit; 268 int as_auditctl; 269 int as_enqueue; 270 int as_written; 271 int as_wblocked; 272 int as_rblocked; 273 int as_dropped; 274 int as_totalsize; 275 unsigned int as_memused; 276 }; 277 typedef struct audit_stat au_stat_t; 278 279 /* 280 * Structure for the audit file statistics. 281 */ 282 struct audit_fstat { 283 u_int64_t af_filesz; 284 u_int64_t af_currsz; 285 }; 286 typedef struct audit_fstat au_fstat_t; 287 288 /* 289 * Audit to event class mapping. 290 */ 291 struct au_evclass_map { 292 au_event_t ec_number; 293 au_class_t ec_class; 294 }; 295 typedef struct au_evclass_map au_evclass_map_t; 296 297 /* 298 * Audit system calls. 299 */ 300 #if !defined(_KERNEL) && !defined(KERNEL) 301 int audit(const void *, int); 302 int auditon(int, void *, int); 303 int auditctl(const char *); 304 int getauid(au_id_t *); 305 int setauid(const au_id_t *); 306 int getaudit(struct auditinfo *); 307 int setaudit(const struct auditinfo *); 308 int getaudit_addr(struct auditinfo_addr *, int); 309 int setaudit_addr(const struct auditinfo_addr *, int); 310 #endif /* defined(_KERNEL) || defined(KERNEL) */ 311 312 __END_DECLS 313 314 #endif /* !_BSM_AUDIT_H */ 315