1 /* 2 * Copyright (c) 2005 Apple Computer, 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 Computer, 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/audit3/sys/bsm/audit.h#38 30 * $FreeBSD$ 31 */ 32 33 #ifndef _BSM_AUDIT_H 34 #define _BSM_AUDIT_H 35 36 #include <sys/param.h> 37 #include <sys/cdefs.h> 38 #include <sys/queue.h> 39 40 #define AUDIT_RECORD_MAGIC 0x828a0f1b 41 #define MAX_AUDIT_RECORDS 20 42 #define MAXAUDITDATA (0x8000 - 1) 43 #define MAX_AUDIT_RECORD_SIZE MAXAUDITDATA 44 #define MIN_AUDIT_FILE_SIZE (512 * 1024) 45 46 /* 47 * Minimum noumber of free blocks on the filesystem containing the audit 48 * log necessary to avoid a hard log rotation. DO NOT SET THIS VALUE TO 0 49 * as the kernel does an unsigned compare, plus we want to leave a few blocks 50 * free so userspace can terminate the log, etc. 51 */ 52 #define AUDIT_HARD_LIMIT_FREE_BLOCKS 4 53 54 /* 55 * Triggers for the audit daemon. 56 */ 57 #define AUDIT_TRIGGER_MIN 1 58 #define AUDIT_TRIGGER_LOW_SPACE 1 /* Below low watermark. */ 59 #define AUDIT_TRIGGER_ROTATE_KERNEL 2 /* Kernel requests rotate. */ 60 #define AUDIT_TRIGGER_READ_FILE 3 /* Re-read config file. */ 61 #define AUDIT_TRIGGER_CLOSE_AND_DIE 4 /* Terminate audit. */ 62 #define AUDIT_TRIGGER_NO_SPACE 5 /* Below min free space. */ 63 #define AUDIT_TRIGGER_ROTATE_USER 6 /* User requests roate. */ 64 #define AUDIT_TRIGGER_MAX 6 65 66 /* 67 * The special device filename (FreeBSD). 68 */ 69 #define AUDITDEV_FILENAME "audit" 70 #define AUDIT_TRIGGER_FILE ("/dev/" AUDITDEV_FILENAME) 71 72 /* 73 * Pre-defined audit IDs 74 */ 75 #define AU_DEFAUDITID -1 76 77 /* 78 * Define the masks for the classes of audit events. 79 */ 80 #define AU_NULL 0x00000000 81 #define AU_FREAD 0x00000001 82 #define AU_FWRITE 0x00000002 83 #define AU_FACCESS 0x00000004 84 #define AU_FMODIFY 0x00000008 85 #define AU_FCREATE 0x00000010 86 #define AU_FDELETE 0x00000020 87 #define AU_CLOSE 0x00000040 88 #define AU_PROCESS 0x00000080 89 #define AU_NET 0x00000100 90 #define AU_IPC 0x00000200 91 #define AU_NONAT 0x00000400 92 #define AU_ADMIN 0x00000800 93 #define AU_LOGIN 0x00001000 94 #define AU_TFM 0x00002000 95 #define AU_APPL 0x00004000 96 #define AU_SETL 0x00008000 97 #define AU_IFLOAT 0x00010000 98 #define AU_PRIV 0x00020000 99 #define AU_MAC_RW 0x00040000 100 #define AU_XCONN 0x00080000 101 #define AU_XCREATE 0x00100000 102 #define AU_XDELETE 0x00200000 103 #define AU_XIFLOAT 0x00400000 104 #define AU_XPRIVS 0x00800000 105 #define AU_XPRIVF 0x01000000 106 #define AU_XMOVE 0x02000000 107 #define AU_XDACF 0x04000000 108 #define AU_XMACF 0x08000000 109 #define AU_XSECATTR 0x10000000 110 #define AU_IOCTL 0x20000000 111 #define AU_EXEC 0x40000000 112 #define AU_OTHER 0x80000000 113 #define AU_ALL 0xffffffff 114 115 /* 116 * IPC types. 117 */ 118 #define AT_IPC_MSG ((u_char)1) /* Message IPC id. */ 119 #define AT_IPC_SEM ((u_char)2) /* Semaphore IPC id. */ 120 #define AT_IPC_SHM ((u_char)3) /* Shared mem IPC id. */ 121 122 /* 123 * Audit conditions. 124 */ 125 #define AUC_UNSET 0 126 #define AUC_AUDITING 1 127 #define AUC_NOAUDIT 2 128 #define AUC_DISABLED -1 129 130 /* 131 * auditon(2) commands. 132 */ 133 #define A_GETPOLICY 2 134 #define A_SETPOLICY 3 135 #define A_GETKMASK 4 136 #define A_SETKMASK 5 137 #define A_GETQCTRL 6 138 #define A_SETQCTRL 7 139 #define A_GETCWD 8 140 #define A_GETCAR 9 141 #define A_GETSTAT 12 142 #define A_SETSTAT 13 143 #define A_SETUMASK 14 144 #define A_SETSMASK 15 145 #define A_GETCOND 20 146 #define A_SETCOND 21 147 #define A_GETCLASS 22 148 #define A_SETCLASS 23 149 #define A_GETPINFO 24 150 #define A_SETPMASK 25 151 #define A_SETFSIZE 26 152 #define A_GETFSIZE 27 153 #define A_GETPINFO_ADDR 28 154 #define A_GETKAUDIT 29 155 #define A_SETKAUDIT 30 156 #define A_SENDTRIGGER 31 157 158 /* 159 * Audit policy controls. 160 */ 161 #define AUDIT_CNT 0x0001 162 #define AUDIT_AHLT 0x0002 163 #define AUDIT_ARGV 0x0004 164 #define AUDIT_ARGE 0x0008 165 #define AUDIT_SEQ 0x0010 166 #define AUDIT_WINDATA 0x0020 167 #define AUDIT_USER 0x0040 168 #define AUDIT_GROUP 0x0080 169 #define AUDIT_TRAIL 0x0100 170 #define AUDIT_PATH 0x0200 171 #define AUDIT_SCNT 0x0400 172 #define AUDIT_PUBLIC 0x0800 173 #define AUDIT_ZONENAME 0x1000 174 #define AUDIT_PERZONE 0x2000 175 176 /* 177 * Default audit queue control parameters. 178 */ 179 #define AQ_HIWATER 100 180 #define AQ_MAXHIGH 10000 181 #define AQ_LOWATER 10 182 #define AQ_BUFSZ MAXAUDITDATA 183 #define AQ_MAXBUFSZ 1048576 184 185 /* 186 * Default minimum percentage free space on file system. 187 */ 188 #define AU_FS_MINFREE 20 189 190 /* 191 * Type definitions used indicating the length of variable length addresses 192 * in tokens containing addresses, such as header fields. 193 */ 194 #define AU_IPv4 4 195 #define AU_IPv6 16 196 197 __BEGIN_DECLS 198 199 typedef uid_t au_id_t; 200 typedef pid_t au_asid_t; 201 typedef u_int16_t au_event_t; 202 typedef u_int16_t au_emod_t; 203 typedef u_int32_t au_class_t; 204 205 struct au_tid { 206 dev_t port; 207 u_int32_t machine; 208 }; 209 typedef struct au_tid au_tid_t; 210 211 struct au_tid_addr { 212 dev_t at_port; 213 u_int32_t at_type; 214 u_int32_t at_addr[4]; 215 }; 216 typedef struct au_tid_addr au_tid_addr_t; 217 218 struct au_mask { 219 unsigned int am_success; /* Success bits. */ 220 unsigned int am_failure; /* Failure bits. */ 221 }; 222 typedef struct au_mask au_mask_t; 223 224 struct auditinfo { 225 au_id_t ai_auid; /* Audit user ID. */ 226 au_mask_t ai_mask; /* Audit masks. */ 227 au_tid_t ai_termid; /* Terminal ID. */ 228 au_asid_t ai_asid; /* Audit session ID. */ 229 }; 230 typedef struct auditinfo auditinfo_t; 231 232 struct auditinfo_addr { 233 au_id_t ai_auid; /* Audit user ID. */ 234 au_mask_t ai_mask; /* Audit masks. */ 235 au_tid_addr_t ai_termid; /* Terminal ID. */ 236 au_asid_t ai_asid; /* Audit session ID. */ 237 }; 238 typedef struct auditinfo_addr auditinfo_addr_t; 239 240 struct auditpinfo { 241 pid_t ap_pid; /* ID of target process. */ 242 au_id_t ap_auid; /* Audit user ID. */ 243 au_mask_t ap_mask; /* Audit masks. */ 244 au_tid_t ap_termid; /* Terminal ID. */ 245 au_asid_t ap_asid; /* Audit session ID. */ 246 }; 247 typedef struct auditpinfo auditpinfo_t; 248 249 struct auditpinfo_addr { 250 pid_t ap_pid; /* ID of target process. */ 251 au_id_t ap_auid; /* Audit user ID. */ 252 au_mask_t ap_mask; /* Audit masks. */ 253 au_tid_addr_t ap_termid; /* Terminal ID. */ 254 au_asid_t ap_asid; /* Audit session ID. */ 255 }; 256 typedef struct auditpinfo_addr auditpinfo_addr_t; 257 258 /* 259 * Contents of token_t are opaque outside of libbsm. 260 */ 261 typedef struct au_token token_t; 262 263 /* 264 * Kernel audit queue control parameters. 265 */ 266 struct au_qctrl { 267 size_t aq_hiwater; 268 size_t aq_lowater; 269 size_t aq_bufsz; 270 clock_t aq_delay; 271 int aq_minfree; /* Minimum filesystem percent free space. */ 272 }; 273 typedef struct au_qctrl au_qctrl_t; 274 275 /* 276 * Structure for the audit statistics. 277 */ 278 struct audit_stat { 279 unsigned int as_version; 280 unsigned int as_numevent; 281 int as_generated; 282 int as_nonattrib; 283 int as_kernel; 284 int as_audit; 285 int as_auditctl; 286 int as_enqueue; 287 int as_written; 288 int as_wblocked; 289 int as_rblocked; 290 int as_dropped; 291 int as_totalsize; 292 unsigned int as_memused; 293 }; 294 typedef struct audit_stat au_stat_t; 295 296 /* 297 * Structure for the audit file statistics. 298 */ 299 struct audit_fstat { 300 u_quad_t af_filesz; 301 u_quad_t af_currsz; 302 }; 303 typedef struct audit_fstat au_fstat_t; 304 305 /* 306 * Audit to event class mapping. 307 */ 308 struct au_evclass_map { 309 au_event_t ec_number; 310 au_class_t ec_class; 311 }; 312 typedef struct au_evclass_map au_evclass_map_t; 313 314 /* 315 * Audit system calls. 316 */ 317 #if !defined(_KERNEL) && !defined(KERNEL) 318 int audit(const void *, int); 319 int auditon(int, void *, int); 320 int auditctl(const char *); 321 int getauid(au_id_t *); 322 int setauid(const au_id_t *); 323 int getaudit(struct auditinfo *); 324 int setaudit(const struct auditinfo *); 325 int getaudit_addr(struct auditinfo_addr *, int); 326 int setaudit_addr(const struct auditinfo_addr *, int); 327 #endif /* defined(_KERNEL) || defined(KERNEL) */ 328 329 __END_DECLS 330 331 #endif /* !_BSM_AUDIT_H */ 332