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 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 /* 27 * This file contains the declarations of the various data structures 28 * used by the auditing module(s). 29 */ 30 31 #ifndef _BSM_AUDIT_H 32 #define _BSM_AUDIT_H 33 34 #ifdef __cplusplus 35 extern "C" { 36 #endif 37 38 39 #include <sys/shm.h> /* for shmid_ds structure */ 40 #include <sys/sem.h> /* for semid_ds structure */ 41 #include <sys/msg.h> /* for msqid_ds structure */ 42 #include <sys/atomic.h> /* using atomics */ 43 44 /* 45 * Audit conditions, statements reguarding what's to be done with 46 * audit records. Neither AUC_ENABLED, AUC_DISABLED, nor AUC_UNSET 47 * are returned on an auditconfig -getcond call. 48 */ 49 /* global state */ 50 #define AUC_DISABLED -1 /* audit module loaded but not enabled */ 51 #define AUC_UNSET 0 /* on/off hasn't been decided */ 52 #define AUC_ENABLED 1 /* loaded and enabled */ 53 /* local zone state */ 54 #define AUC_INIT_AUDIT 4 /* c2audit is ready but auditd has not run */ 55 #define AUC_AUDITING 1 /* auditing is being done */ 56 #define AUC_NOAUDIT 2 /* auditing is not being done */ 57 #define AUC_NOSPACE 3 /* audit enabled, no space for audit records */ 58 59 /* 60 * The user id -2 is never audited - in fact, a setauid(AU_NOAUDITID) 61 * will turn off auditing. 62 */ 63 #define AU_NOAUDITID ((au_id_t)-2) 64 65 /* 66 * success/failure bits for asynchronous events 67 */ 68 69 #define AUM_SUCC 1 /* use the system success preselection mask */ 70 #define AUM_FAIL 2 /* use the system failure preselection mask */ 71 72 73 /* 74 * Defines for event modifier field 75 */ 76 #define PAD_READ 0x0001 /* object read */ 77 #define PAD_WRITE 0x0002 /* object write */ 78 #define PAD_NONATTR 0x4000 /* non-attributable event */ 79 #define PAD_FAILURE 0x8000 /* fail audit event */ 80 #define PAD_SPRIVUSE 0x0080 /* successfully used privileged */ 81 #define PAD_FPRIVUSE 0x0100 /* failed use of privileged */ 82 83 /* 84 * Some typedefs for the fundamentals 85 */ 86 typedef uint_t au_asid_t; 87 typedef uint_t au_class_t; 88 typedef ushort_t au_event_t; 89 typedef ushort_t au_emod_t; 90 typedef uid_t au_id_t; 91 92 /* 93 * An audit event mask. 94 */ 95 #define AU_MASK_ALL 0xFFFFFFFF /* all bits on for unsigned int */ 96 #define AU_MASK_NONE 0x0 /* all bits off = no:invalid class */ 97 98 struct au_mask { 99 unsigned int am_success; /* success bits */ 100 unsigned int am_failure; /* failure bits */ 101 }; 102 typedef struct au_mask au_mask_t; 103 #define as_success am_success 104 #define as_failure am_failure 105 106 /* 107 * The structure of the terminal ID (ipv4) 108 */ 109 struct au_tid { 110 dev_t port; 111 uint_t machine; 112 }; 113 114 #if defined(_SYSCALL32) 115 struct au_tid32 { 116 uint_t port; 117 uint_t machine; 118 }; 119 120 typedef struct au_tid32 au_tid32_t; 121 #endif 122 123 typedef struct au_tid au_tid_t; 124 125 /* 126 * The structure of the terminal ID (ipv6) 127 */ 128 struct au_tid_addr { 129 dev_t at_port; 130 uint_t at_type; 131 uint_t at_addr[4]; 132 }; 133 134 struct au_port_s { 135 uint32_t at_major; /* major # */ 136 uint32_t at_minor; /* minor # */ 137 }; 138 typedef struct au_port_s au_port_t; 139 140 struct au_tid_addr64 { 141 au_port_t at_port; 142 uint_t at_type; 143 uint_t at_addr[4]; 144 }; 145 typedef struct au_tid_addr64 au_tid64_addr_t; 146 147 #if defined(_SYSCALL32) 148 struct au_tid_addr32 { 149 uint_t at_port; 150 uint_t at_type; 151 uint_t at_addr[4]; 152 }; 153 154 typedef struct au_tid_addr32 au_tid32_addr_t; 155 #endif 156 157 typedef struct au_tid_addr au_tid_addr_t; 158 159 struct au_ip { 160 uint16_t at_r_port; /* remote port */ 161 uint16_t at_l_port; /* local port */ 162 uint32_t at_type; /* AU_IPv4,... */ 163 uint32_t at_addr[4]; /* remote IP */ 164 }; 165 typedef struct au_ip au_ip_t; 166 167 /* 168 * Generic network address structure 169 */ 170 struct au_generic_tid { 171 uchar_t gt_type; /* AU_IPADR, AU_DEVICE,... */ 172 union { 173 au_ip_t at_ip; 174 au_port_t at_dev; 175 } gt_adr; 176 }; 177 typedef struct au_generic_tid au_generic_tid_t; 178 179 /* 180 * au_generic_tid_t gt_type values 181 * 0 is reserved for uninitialized data 182 */ 183 #define AU_IPADR 1 184 #define AU_ETHER 2 185 #define AU_DEVICE 3 186 187 /* 188 * at_type values - address length used to identify address type 189 */ 190 #define AU_IPv4 4 /* ipv4 type IP address */ 191 #define AU_IPv6 16 /* ipv6 type IP address */ 192 193 /* 194 * Compatability with SunOS 4.x BSM module 195 * 196 * New code should not contain audit_state_t, 197 * au_state_t, nor au_termid as these types 198 * may go away in future releases. 199 * 200 * typedef new-5.x-bsm-name old-4.x-bsm-name 201 */ 202 203 typedef au_class_t au_state_t; 204 typedef au_mask_t audit_state_t; 205 typedef au_id_t auid_t; 206 #define ai_state ai_mask; 207 208 /* 209 * Opcodes for bsm system calls 210 */ 211 212 #define BSM_GETAUID 19 213 #define BSM_SETAUID 20 214 #define BSM_GETAUDIT 21 215 #define BSM_SETAUDIT 22 216 /* 23 OBSOLETE */ 217 /* 24 OBSOLETE */ 218 #define BSM_AUDIT 25 219 /* 26 OBSOLETE */ 220 /* 27 EOL announced for Sol 10 */ 221 #define BSM_AUDITON 28 222 #define BSM_AUDITCTL 29 223 /* 30 OBSOLETE */ 224 /* 31 OBSOLETE */ 225 /* 32 OBSOLETE */ 226 /* 33 OBSOLETE */ 227 /* 34 OBSOLETE */ 228 #define BSM_GETAUDIT_ADDR 35 229 #define BSM_SETAUDIT_ADDR 36 230 #define BSM_AUDITDOOR 37 231 232 /* 233 * Auditctl(2) commands 234 */ 235 #define A_GETPOLICY 2 /* get audit policy */ 236 #define A_SETPOLICY 3 /* set audit policy */ 237 #define A_GETKMASK 4 /* get kernel event preselection mask */ 238 #define A_SETKMASK 5 /* set kernel event preselection mask */ 239 #define A_GETQCTRL 6 /* get kernel audit queue ctrl parameters */ 240 #define A_SETQCTRL 7 /* set kernel audit queue ctrl parameters */ 241 #define A_GETCWD 8 /* get process current working directory */ 242 #define A_GETCAR 9 /* get process current active root */ 243 #define A_GETSTAT 12 /* get audit statistics */ 244 #define A_SETSTAT 13 /* (re)set audit statistics */ 245 #define A_SETUMASK 14 /* set preselection mask for procs with auid */ 246 #define A_SETSMASK 15 /* set preselection mask for procs with asid */ 247 #define A_GETCOND 20 /* get audit system on/off condition */ 248 #define A_SETCOND 21 /* set audit system on/off condition */ 249 #define A_GETCLASS 22 /* get audit event to class mapping */ 250 #define A_SETCLASS 23 /* set audit event to class mapping */ 251 #define A_GETPINFO 24 /* get audit info for an arbitrary pid */ 252 #define A_SETPMASK 25 /* set preselection mask for an given pid */ 253 #define A_SETFSIZE 26 /* set audit file size */ 254 #define A_GETFSIZE 27 /* get audit file size */ 255 #define A_GETPINFO_ADDR 28 /* get audit info for an arbitrary pid */ 256 #define A_GETKAUDIT 29 /* get kernel audit characteristics */ 257 #define A_SETKAUDIT 30 /* set kernel audit characteristics */ 258 259 /* 260 * Audit Policy parameters (32 bits) 261 */ 262 #define AUDIT_CNT 0x0001 /* do NOT sleep undelivered synch events */ 263 #define AUDIT_AHLT 0x0002 /* HALT machine on undelivered async event */ 264 #define AUDIT_ARGV 0x0004 /* include argv with execv system call events */ 265 #define AUDIT_ARGE 0x0008 /* include arge with execv system call events */ 266 #define AUDIT_SEQ 0x0010 /* include sequence attribute */ 267 #define AUDIT_WINDATA 0x0020 /* include interwindow moved data */ 268 #define AUDIT_GROUP 0x0040 /* include group attribute with each record */ 269 #define AUDIT_TRAIL 0x0080 /* include trailer token */ 270 #define AUDIT_PATH 0x0100 /* allow multiple paths per event */ 271 #define AUDIT_SCNT 0x0200 /* sleep user events but not kernel events */ 272 #define AUDIT_PUBLIC 0x0400 /* audit even "public" files */ 273 #define AUDIT_ZONENAME 0x0800 /* emit zonename token */ 274 #define AUDIT_PERZONE 0x1000 /* auditd and audit queue for each zone */ 275 #define AUDIT_WINDATA_DOWN 0x2000 /* include paste downgraded data */ 276 #define AUDIT_WINDATA_UP 0x4000 /* include paste upgraded data */ 277 278 /* 279 * If AUDIT_GLOBAL changes, corresponding changes are required in 280 * audit_syscalls.c's setpolicy(). 281 */ 282 #define AUDIT_GLOBAL (AUDIT_AHLT | AUDIT_PERZONE) 283 #define AUDIT_LOCAL (AUDIT_CNT | AUDIT_ARGV | AUDIT_ARGE |\ 284 AUDIT_SEQ | AUDIT_WINDATA |\ 285 AUDIT_GROUP | AUDIT_TRAIL | AUDIT_PATH |\ 286 AUDIT_PUBLIC | AUDIT_SCNT | AUDIT_ZONENAME |\ 287 AUDIT_WINDATA_DOWN | AUDIT_WINDATA_UP) 288 289 /* 290 * Kernel audit queue control parameters 291 * 292 * audit record recording blocks at hiwater # undelived records 293 * audit record recording resumes at lowwater # undelivered audit records 294 * bufsz determines how big the data xfers will be to the audit trail 295 */ 296 struct au_qctrl { 297 size_t aq_hiwater; /* kernel audit queue, high water mark */ 298 size_t aq_lowater; /* kernel audit queue, low water mark */ 299 size_t aq_bufsz; /* kernel audit queue, write size to trail */ 300 clock_t aq_delay; /* delay before flushing audit queue */ 301 }; 302 303 #if defined(_SYSCALL32) 304 struct au_qctrl32 { 305 size32_t aq_hiwater; 306 size32_t aq_lowater; 307 size32_t aq_bufsz; 308 clock32_t aq_delay; 309 }; 310 #endif 311 312 313 /* 314 * default values of hiwater and lowater (note hi > lo) 315 */ 316 #define AQ_HIWATER 100 317 #define AQ_MAXHIGH 100000 318 #define AQ_LOWATER 10 319 #define AQ_BUFSZ 8192 320 #define AQ_MAXBUFSZ 1048576 321 #define AQ_DELAY 20 322 #define AQ_MAXDELAY 20000 323 324 struct auditinfo { 325 au_id_t ai_auid; 326 au_mask_t ai_mask; 327 au_tid_t ai_termid; 328 au_asid_t ai_asid; 329 }; 330 331 #if defined(_SYSCALL32) 332 struct auditinfo32 { 333 au_id_t ai_auid; 334 au_mask_t ai_mask; 335 au_tid32_t ai_termid; 336 au_asid_t ai_asid; 337 }; 338 339 typedef struct auditinfo32 auditinfo32_t; 340 #endif 341 342 typedef struct auditinfo auditinfo_t; 343 344 struct auditinfo_addr { 345 au_id_t ai_auid; 346 au_mask_t ai_mask; 347 au_tid_addr_t ai_termid; 348 au_asid_t ai_asid; 349 }; 350 351 struct auditinfo_addr64 { 352 au_id_t ai_auid; 353 au_mask_t ai_mask; 354 au_tid64_addr_t ai_termid; 355 au_asid_t ai_asid; 356 }; 357 typedef struct auditinfo_addr64 auditinfo64_addr_t; 358 359 #if defined(_SYSCALL32) 360 struct auditinfo_addr32 { 361 au_id_t ai_auid; 362 au_mask_t ai_mask; 363 au_tid32_addr_t ai_termid; 364 au_asid_t ai_asid; 365 }; 366 367 typedef struct auditinfo_addr32 auditinfo32_addr_t; 368 #endif 369 370 typedef struct auditinfo_addr auditinfo_addr_t; 371 372 struct auditpinfo { 373 pid_t ap_pid; 374 au_id_t ap_auid; 375 au_mask_t ap_mask; 376 au_tid_t ap_termid; 377 au_asid_t ap_asid; 378 }; 379 380 #if defined(_SYSCALL32) 381 struct auditpinfo32 { 382 pid_t ap_pid; 383 au_id_t ap_auid; 384 au_mask_t ap_mask; 385 au_tid32_t ap_termid; 386 au_asid_t ap_asid; 387 }; 388 #endif 389 390 391 struct auditpinfo_addr { 392 pid_t ap_pid; 393 au_id_t ap_auid; 394 au_mask_t ap_mask; 395 au_tid_addr_t ap_termid; 396 au_asid_t ap_asid; 397 }; 398 399 #if defined(_SYSCALL32) 400 struct auditpinfo_addr32 { 401 pid_t ap_pid; 402 au_id_t ap_auid; 403 au_mask_t ap_mask; 404 au_tid32_addr_t ap_termid; 405 au_asid_t ap_asid; 406 }; 407 #endif 408 409 410 struct au_evclass_map { 411 au_event_t ec_number; 412 au_class_t ec_class; 413 }; 414 typedef struct au_evclass_map au_evclass_map_t; 415 416 /* 417 * Audit stat structures (used to be in audit_stat.h 418 */ 419 420 struct audit_stat { 421 unsigned int as_version; /* version of kernel audit code */ 422 unsigned int as_numevent; /* number of kernel audit events */ 423 uint32_t as_generated; /* # records processed */ 424 uint32_t as_nonattrib; /* # non-attributed records produced */ 425 uint32_t as_kernel; /* # records produced by kernel */ 426 uint32_t as_audit; /* # records processed by audit(2) */ 427 uint32_t as_auditctl; /* # records processed by auditctl(2) */ 428 uint32_t as_enqueue; /* # records put onto audit queue */ 429 uint32_t as_written; /* # records written to audit trail */ 430 uint32_t as_wblocked; /* # times write blked on audit queue */ 431 uint32_t as_rblocked; /* # times read blked on audit queue */ 432 uint32_t as_dropped; /* # of dropped audit records */ 433 uint32_t as_totalsize; /* total number bytes of audit data */ 434 uint32_t as_memused; /* no longer used */ 435 }; 436 typedef struct audit_stat au_stat_t; 437 438 /* 439 * Secondary stat structure for file size stuff. The stat structure was 440 * not combined to preserve the semantics of the 5.1 - 5.3 A_GETSTAT call 441 */ 442 struct audit_fstat { 443 unsigned int af_filesz; 444 unsigned int af_currsz; 445 }; 446 typedef struct audit_fstat au_fstat_t; 447 448 /* get kernel audit context dependent on AUDIT_PERZONE policy */ 449 #define GET_KCTX_PZ (audit_policy & AUDIT_PERZONE) ?\ 450 curproc->p_zone->zone_audit_kctxt :\ 451 global_zone->zone_audit_kctxt 452 /* get kernel audit context of global zone */ 453 #define GET_KCTX_GZ global_zone->zone_audit_kctxt 454 /* get kernel audit context of non-global zone */ 455 #define GET_KCTX_NGZ curproc->p_zone->zone_audit_kctxt 456 457 #define AS_INC(a, b, c) atomic_add_32(&(c->auk_statistics.a), (b)) 458 #define AS_DEC(a, b, c) atomic_add_32(&(c->auk_statistics.a), -(b)) 459 460 /* 461 * audit token IPC types (shm, sem, msg) [for ipc attribute] 462 */ 463 464 #define AT_IPC_MSG ((char)1) /* message IPC id */ 465 #define AT_IPC_SEM ((char)2) /* semaphore IPC id */ 466 #define AT_IPC_SHM ((char)3) /* shared memory IPC id */ 467 468 #if defined(_KERNEL) 469 470 #ifdef __cplusplus 471 } 472 #endif 473 474 #include <sys/types.h> 475 #include <sys/model.h> 476 #include <sys/proc.h> 477 #include <sys/stream.h> 478 #include <sys/stropts.h> 479 #include <sys/file.h> 480 #include <sys/pathname.h> 481 #include <sys/vnode.h> 482 #include <sys/systm.h> 483 #include <netinet/in.h> 484 #include <c2/audit_door_infc.h> 485 #include <sys/crypto/ioctladmin.h> 486 #include <sys/netstack.h> 487 488 #ifdef __cplusplus 489 extern "C" { 490 #endif 491 492 struct fcntla; 493 struct t_audit_data; 494 struct audit_path; 495 struct priv_set; 496 struct devplcysys; 497 498 struct auditcalls { 499 long code; 500 long a1; 501 long a2; 502 long a3; 503 long a4; 504 long a5; 505 }; 506 507 int audit(caddr_t, int); 508 int _audit(caddr_t, int); 509 int auditsys(struct auditcalls *, union rval *); /* fake stub */ 510 int _auditsys(struct auditcalls *, union rval *); /* real deal */ 511 void audit_cryptoadm(int, char *, crypto_mech_name_t *, 512 uint_t, uint_t, uint32_t, int); 513 void audit_init(void); 514 void audit_newproc(struct proc *); 515 void audit_pfree(struct proc *); 516 void audit_thread_create(kthread_id_t); 517 void audit_thread_free(kthread_id_t); 518 int audit_savepath(struct pathname *, struct vnode *, int, cred_t *); 519 void audit_addcomponent(struct pathname *); 520 void audit_anchorpath(struct pathname *, int); 521 void audit_symlink(struct pathname *, struct pathname *); 522 void audit_symlink_create(struct vnode *, char *, char *, int); 523 int file_is_public(struct vattr *); 524 void audit_attributes(struct vnode *); 525 void audit_falloc(struct file *); 526 void audit_unfalloc(struct file *); 527 void audit_exit(int, int); 528 void audit_core_start(int); 529 void audit_core_finish(int); 530 void audit_stropen(struct vnode *, dev_t *, int, struct cred *); 531 void audit_strclose(struct vnode *, int, struct cred *); 532 void audit_strioctl(struct vnode *, int, intptr_t, int, int, struct cred *, 533 int *); 534 void audit_strgetmsg(struct vnode *, struct strbuf *, struct strbuf *, 535 unsigned char *, int *, int); 536 void audit_strputmsg(struct vnode *, struct strbuf *, struct strbuf *, 537 unsigned char, int, int); 538 void audit_closef(struct file *); 539 int audit_getf(int); 540 void audit_setf(struct file *, int); 541 void audit_copen(int, struct file *, struct vnode *); 542 void audit_reboot(void); 543 void audit_vncreate_start(void); 544 void audit_setfsat_path(int argnum); 545 void audit_vncreate_finish(struct vnode *, int); 546 void audit_exec(const char *, const char *, ssize_t, ssize_t); 547 void audit_enterprom(int); 548 void audit_exitprom(int); 549 void audit_chdirec(struct vnode *, struct vnode **); 550 void audit_sock(int, struct queue *, struct msgb *, int); 551 void audit_free(void); 552 int audit_start(unsigned int, unsigned int, int, klwp_t *); 553 void audit_finish(unsigned int, unsigned int, int, union rval *); 554 int audit_async_start(label_t *, au_event_t, int); 555 void audit_async_finish(caddr_t *, au_event_t, au_emod_t); 556 void audit_async_discard_backend(void *); 557 void audit_async_done(caddr_t *, int); 558 void audit_async_drop(caddr_t *, int); 559 560 #ifndef AUK_CONTEXT_T 561 #define AUK_CONTEXT_T 562 typedef struct au_kcontext au_kcontext_t; 563 #endif 564 565 int audit_success(au_kcontext_t *, struct t_audit_data *, int, cred_t *); 566 int auditme(au_kcontext_t *, struct t_audit_data *, au_state_t); 567 void audit_fixpath(struct audit_path *, int); 568 void audit_ipc(int, int, void *); 569 void audit_ipcget(int, void *); 570 void audit_lookupname(); 571 int audit_pathcomp(struct pathname *, vnode_t *, cred_t *); 572 void audit_fdsend(int, struct file *, int); 573 void audit_fdrecv(int, struct file *); 574 int audit_c2_revoke(struct fcntla *, rval_t *); 575 void audit_priv(int, const struct priv_set *, int); 576 void audit_setppriv(int, int, const struct priv_set *, const cred_t *); 577 void audit_devpolicy(int, const struct devplcysys *); 578 void audit_update_context(proc_t *, cred_t *); 579 void audit_kssl(int, void *, int); 580 void audit_pf_policy(int, cred_t *, netstack_t *, char *, boolean_t, int, 581 pid_t); 582 void audit_sec_attributes(caddr_t *, struct vnode *); 583 584 #endif 585 586 #ifdef __cplusplus 587 } 588 #endif 589 590 #endif /* _BSM_AUDIT_H */ 591