1 /* 2 * Copyright (c) 2005 Apple Computer, Inc. 3 * All rights reserved. 4 * 5 * @APPLE_BSD_LICENSE_HEADER_START@ 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of 17 * its contributors may be used to endorse or promote products derived 18 * from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 21 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 22 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 23 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 24 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 25 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 27 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 * 31 * @APPLE_BSD_LICENSE_HEADER_END@ 32 * 33 * $P4: //depot/projects/trustedbsd/audit3/sys/bsm/audit.h#24 $ 34 * $FreeBSD$ 35 */ 36 37 #ifndef _BSM_AUDIT_H 38 #define _BSM_AUDIT_H 39 40 #include <sys/param.h> 41 #include <sys/cdefs.h> 42 #include <sys/queue.h> 43 44 #define AUDIT_RECORD_MAGIC 0x828a0f1b 45 #define MAX_AUDIT_RECORDS 20 46 #define MAX_AUDIT_RECORD_SIZE 4096 47 #define MIN_AUDIT_FILE_SIZE (512 * 1024) 48 49 /* 50 * Minimum noumber of free blocks on the filesystem containing the audit 51 * log necessary to avoid a hard log rotation. DO NOT SET THIS VALUE TO 0 52 * as the kernel does an unsigned compare, plus we want to leave a few blocks 53 * free so userspace can terminate the log, etc. 54 */ 55 #define AUDIT_HARD_LIMIT_FREE_BLOCKS 4 56 57 /* 58 * Triggers for the audit daemon 59 */ 60 #define AUDIT_TRIGGER_MIN 1 61 #define AUDIT_TRIGGER_LOW_SPACE 1 62 #define AUDIT_TRIGGER_OPEN_NEW 2 63 #define AUDIT_TRIGGER_READ_FILE 3 64 #define AUDIT_TRIGGER_CLOSE_AND_DIE 4 65 #define AUDIT_TRIGGER_NO_SPACE 5 66 #define AUDIT_TRIGGER_MAX 5 67 68 /* 69 * File that will be read for trigger events from the kernel. 70 */ 71 #define AUDIT_TRIGGER_FILE "/dev/audit" 72 73 /* 74 * The special device filename. 75 */ 76 #define AUDITDEV_FILENAME "audit" 77 78 /* 79 * Pre-defined audit IDs 80 */ 81 #define AU_DEFAUDITID -1 82 83 /* 84 * Define the masks for the classes of audit events. 85 */ 86 #define AU_NULL 0x00000000 87 #define AU_FREAD 0x00000001 88 #define AU_FWRITE 0x00000002 89 #define AU_FACCESS 0x00000004 90 #define AU_FMODIFY 0x00000008 91 #define AU_FCREATE 0x00000010 92 #define AU_FDELETE 0x00000020 93 #define AU_CLOSE 0x00000040 94 #define AU_PROCESS 0x00000080 95 #define AU_NET 0x00000100 96 #define AU_IPC 0x00000200 97 #define AU_NONAT 0x00000400 98 #define AU_ADMIN 0x00000800 99 #define AU_LOGIN 0x00001000 100 #define AU_TFM 0x00002000 101 #define AU_APPL 0x00004000 102 #define AU_SETL 0x00008000 103 #define AU_IFLOAT 0x00010000 104 #define AU_PRIV 0x00020000 105 #define AU_MAC_RW 0x00040000 106 #define AU_XCONN 0x00080000 107 #define AU_XCREATE 0x00100000 108 #define AU_XDELETE 0x00200000 109 #define AU_XIFLOAT 0x00400000 110 #define AU_XPRIVS 0x00800000 111 #define AU_XPRIVF 0x01000000 112 #define AU_XMOVE 0x02000000 113 #define AU_XDACF 0x04000000 114 #define AU_XMACF 0x08000000 115 #define AU_XSECATTR 0x10000000 116 #define AU_IOCTL 0x20000000 117 #define AU_EXEC 0x40000000 118 #define AU_OTHER 0x80000000 119 #define AU_ALL 0xffffffff 120 121 /* 122 * IPC types 123 */ 124 #define AT_IPC_MSG ((u_char)1) /* Message IPC id. */ 125 #define AT_IPC_SEM ((u_char)2) /* Semaphore IPC id. */ 126 #define AT_IPC_SHM ((u_char)3) /* Shared mem IPC id. */ 127 128 /* 129 * Audit conditions. 130 */ 131 #define AUC_UNSET 0 132 #define AUC_AUDITING 1 133 #define AUC_NOAUDIT 2 134 #define AUC_DISABLED -1 135 136 /* 137 * auditon(2) commands. 138 */ 139 #define A_GETPOLICY 2 140 #define A_SETPOLICY 3 141 #define A_GETKMASK 4 142 #define A_SETKMASK 5 143 #define A_GETQCTRL 6 144 #define A_SETQCTRL 7 145 #define A_GETCWD 8 146 #define A_GETCAR 9 147 #define A_GETSTAT 12 148 #define A_SETSTAT 13 149 #define A_SETUMASK 14 150 #define A_SETSMASK 15 151 #define A_GETCOND 20 152 #define A_SETCOND 21 153 #define A_GETCLASS 22 154 #define A_SETCLASS 23 155 #define A_GETPINFO 24 156 #define A_SETPMASK 25 157 #define A_SETFSIZE 26 158 #define A_GETFSIZE 27 159 #define A_GETPINFO_ADDR 28 160 #define A_GETKAUDIT 29 161 #define A_SETKAUDIT 30 162 #define A_SENDTRIGGER 31 163 164 /* 165 * Audit policy controls. 166 */ 167 #define AUDIT_CNT 0x0001 168 #define AUDIT_AHLT 0x0002 169 #define AUDIT_ARGV 0x0004 170 #define AUDIT_ARGE 0x0008 171 #define AUDIT_PASSWD 0x0010 172 #define AUDIT_SEQ 0x0020 173 #define AUDIT_WINDATA 0x0040 174 #define AUDIT_USER 0x0080 175 #define AUDIT_GROUP 0x0100 176 #define AUDIT_TRAIL 0x0200 177 #define AUDIT_PATH 0x0400 178 179 /* 180 * Audit queue control parameters 181 */ 182 #define AQ_HIWATER 100 183 #define AQ_MAXHIGH 10000 184 #define AQ_LOWATER 10 185 #define AQ_BUFSZ 1024 186 #define AQ_MAXBUFSZ 1048576 187 188 /* 189 * Default minimum percentage free space on file system. 190 */ 191 #define AU_FS_MINFREE 20 192 193 /* 194 * Type definitions used indicating the length of variable length addresses 195 * in tokens containing addresses, such as header fields. 196 */ 197 #define AU_IPv4 4 198 #define AU_IPv6 16 199 200 __BEGIN_DECLS 201 202 typedef uid_t au_id_t; 203 typedef pid_t au_asid_t; 204 typedef u_int16_t au_event_t; 205 typedef u_int16_t au_emod_t; 206 typedef u_int32_t au_class_t; 207 208 struct au_tid { 209 dev_t port; 210 u_int32_t machine; 211 }; 212 typedef struct au_tid au_tid_t; 213 214 struct au_tid_addr { 215 dev_t at_port; 216 u_int32_t at_type; 217 u_int32_t at_addr[4]; 218 }; 219 typedef struct au_tid_addr au_tid_addr_t; 220 221 struct au_mask { 222 unsigned int am_success; /* Success bits. */ 223 unsigned int am_failure; /* Failure bits. */ 224 }; 225 typedef struct au_mask au_mask_t; 226 227 struct auditinfo { 228 au_id_t ai_auid; /* Audit user ID. */ 229 au_mask_t ai_mask; /* Audit masks. */ 230 au_tid_t ai_termid; /* Terminal ID. */ 231 au_asid_t ai_asid; /* Audit session ID. */ 232 }; 233 typedef struct auditinfo auditinfo_t; 234 235 struct auditinfo_addr { 236 au_id_t ai_auid; /* Audit user ID. */ 237 au_mask_t ai_mask; /* Audit masks. */ 238 au_tid_addr_t ai_termid; /* Terminal ID. */ 239 au_asid_t ai_asid; /* Audit session ID. */ 240 }; 241 typedef struct auditinfo_addr auditinfo_addr_t; 242 243 struct auditpinfo { 244 pid_t ap_pid; /* ID of target process. */ 245 au_id_t ap_auid; /* Audit user ID. */ 246 au_mask_t ap_mask; /* Audit masks. */ 247 au_tid_t ap_termid; /* Terminal ID. */ 248 au_asid_t ap_asid; /* Audit session ID. */ 249 }; 250 typedef struct auditpinfo auditpinfo_t; 251 252 struct auditpinfo_addr { 253 pid_t ap_pid; /* ID of target process. */ 254 au_id_t ap_auid; /* Audit user ID. */ 255 au_mask_t ap_mask; /* Audit masks. */ 256 au_tid_addr_t ap_termid; /* Terminal ID. */ 257 au_asid_t ap_asid; /* Audit session ID. */ 258 }; 259 typedef struct auditpinfo_addr auditpinfo_addr_t; 260 261 /* 262 * Contents of token_t are opaque outside of libbsm. 263 */ 264 typedef struct au_token token_t; 265 266 /* 267 * Kernel audit queue control parameters. 268 */ 269 struct au_qctrl { 270 size_t aq_hiwater; 271 size_t aq_lowater; 272 size_t aq_bufsz; 273 clock_t aq_delay; 274 int aq_minfree; /* Minimum filesystem percent free space. */ 275 }; 276 typedef struct au_qctrl au_qctrl_t; 277 278 /* 279 * Structure for the audit statistics. 280 */ 281 struct audit_stat { 282 unsigned int as_version; 283 unsigned int as_numevent; 284 int as_generated; 285 int as_nonattring; 286 int as_kernel; 287 int as_audit; 288 int as_auditctl; 289 int as_enqueu; 290 int as_written; 291 int as_wblocked; 292 int as_rblocked; 293 int as_dropped; 294 int as_totalsize; 295 unsigned int as_memused; 296 }; 297 typedef struct audit_stat au_stat_t; 298 299 /* 300 * Structure for the audit file statistics. 301 */ 302 struct audit_fstat { 303 u_quad_t af_filesz; 304 u_quad_t af_currsz; 305 }; 306 typedef struct audit_fstat au_fstat_t; 307 308 /* 309 * Audit to event class mapping. 310 */ 311 struct au_evclass_map { 312 au_event_t ec_number; 313 au_class_t ec_class; 314 }; 315 typedef struct au_evclass_map au_evclass_map_t; 316 317 /* 318 * Audit system calls. 319 */ 320 #if !defined(_KERNEL) && !defined(KERNEL) 321 int audit(const void *, int); 322 int auditon(int, void *, int); 323 int auditctl(const char *); 324 int getauid(au_id_t *); 325 int setauid(const au_id_t *); 326 int getaudit(struct auditinfo *); 327 int setaudit(const struct auditinfo *); 328 int getaudit_addr(struct auditinfo_addr *, int); 329 int setaudit_addr(const struct auditinfo_addr *, int); 330 #endif /* defined(_KERNEL) || defined(KERNEL) */ 331 332 __END_DECLS 333 334 #endif /* !_BSM_AUDIT_H */ 335