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 (c) 1992, 2010, Oracle and/or its affiliates. All rights reserved. 23 */ 24 25 /* 26 * This file contains the declarations of the various data structures 27 * used by the auditing module(s). 28 */ 29 30 #ifndef _BSM_AUDIT_H 31 #define _BSM_AUDIT_H 32 33 #ifdef __cplusplus 34 extern "C" { 35 #endif 36 37 38 #include <sys/shm.h> /* for shmid_ds structure */ 39 #include <sys/sem.h> /* for semid_ds structure */ 40 #include <sys/msg.h> /* for msqid_ds structure */ 41 #include <sys/atomic.h> /* using atomics */ 42 43 /* 44 * Audit conditions, statements reguarding what's to be done with 45 * audit records. None of the "global state" is returned by an 46 * auditconfig -getcond call. AUC_NOSPACE no longer seems used. 47 */ 48 /* global state */ 49 #define AUC_UNSET 0 /* on/off hasn't been decided */ 50 #define AUC_ENABLED 1 /* loaded and enabled */ 51 /* pseudo state used in libbsm */ 52 #define AUC_DISABLED 0x100 /* c2audit module is excluded */ 53 /* local zone state */ 54 #define AUC_AUDITING 0x1 /* audit daemon is active */ 55 #define AUC_NOAUDIT 0x2 /* audit daemon is not active */ 56 #define AUC_INIT_AUDIT 0x4 /* audit ready but auditd has not run */ 57 #define AUC_NOSPACE 0x8 /* 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 /* 28 OBSOLETE */ 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 * auditon(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 non-attributable event audit mask */ 238 #define A_SETKMASK 5 /* set non-attributable event audit 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_GETPINFO_ADDR 28 /* get audit info for an arbitrary pid */ 254 #define A_GETKAUDIT 29 /* get kernel audit characteristics */ 255 #define A_SETKAUDIT 30 /* set kernel audit characteristics */ 256 #define A_GETAMASK 31 /* set user default audit event mask */ 257 #define A_SETAMASK 32 /* get user default audit event mask */ 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_GROUP 0x0040 /* include group attribute with each record */ 268 #define AUDIT_TRAIL 0x0080 /* include trailer token */ 269 #define AUDIT_PATH 0x0100 /* allow multiple paths per event */ 270 #define AUDIT_SCNT 0x0200 /* sleep user events but not kernel events */ 271 #define AUDIT_PUBLIC 0x0400 /* audit even "public" files */ 272 #define AUDIT_ZONENAME 0x0800 /* emit zonename token */ 273 #define AUDIT_PERZONE 0x1000 /* auditd and audit queue for each zone */ 274 #define AUDIT_WINDATA_DOWN 0x2000 /* include paste downgraded data */ 275 #define AUDIT_WINDATA_UP 0x4000 /* include paste upgraded data */ 276 277 /* 278 * If AUDIT_GLOBAL changes, corresponding changes are required in 279 * audit_syscalls.c's setpolicy(). 280 */ 281 #define AUDIT_GLOBAL (AUDIT_AHLT | AUDIT_PERZONE) 282 #define AUDIT_LOCAL (AUDIT_CNT | AUDIT_ARGV | AUDIT_ARGE |\ 283 AUDIT_SEQ | AUDIT_GROUP | AUDIT_TRAIL | AUDIT_PATH |\ 284 AUDIT_PUBLIC | AUDIT_SCNT | AUDIT_ZONENAME |\ 285 AUDIT_WINDATA_DOWN | AUDIT_WINDATA_UP) 286 287 /* 288 * Kernel audit queue control parameters 289 * 290 * audit record recording blocks at hiwater # undelived records 291 * audit record recording resumes at lowwater # undelivered audit records 292 * bufsz determines how big the data xfers will be to the audit trail 293 */ 294 struct au_qctrl { 295 size_t aq_hiwater; /* kernel audit queue, high water mark */ 296 size_t aq_lowater; /* kernel audit queue, low water mark */ 297 size_t aq_bufsz; /* kernel audit queue, write size to trail */ 298 clock_t aq_delay; /* delay before flushing audit queue */ 299 }; 300 301 #if defined(_SYSCALL32) 302 struct au_qctrl32 { 303 size32_t aq_hiwater; 304 size32_t aq_lowater; 305 size32_t aq_bufsz; 306 clock32_t aq_delay; 307 }; 308 #endif 309 310 311 /* 312 * default values of hiwater and lowater (note hi > lo) 313 */ 314 #define AQ_HIWATER 100 315 #define AQ_MAXHIGH 100000 316 #define AQ_LOWATER 10 317 #define AQ_BUFSZ 8192 318 #define AQ_MAXBUFSZ 1048576 319 #define AQ_DELAY 20 320 #define AQ_MAXDELAY 20000 321 322 struct auditinfo { 323 au_id_t ai_auid; 324 au_mask_t ai_mask; 325 au_tid_t ai_termid; 326 au_asid_t ai_asid; 327 }; 328 329 #if defined(_SYSCALL32) 330 struct auditinfo32 { 331 au_id_t ai_auid; 332 au_mask_t ai_mask; 333 au_tid32_t ai_termid; 334 au_asid_t ai_asid; 335 }; 336 337 typedef struct auditinfo32 auditinfo32_t; 338 #endif 339 340 typedef struct auditinfo auditinfo_t; 341 342 struct k_auditinfo_addr { 343 au_id_t ai_auid; 344 au_mask_t ai_amask; /* user default preselection mask */ 345 au_mask_t ai_namask; /* non-attributable mask */ 346 au_tid_addr_t ai_termid; 347 au_asid_t ai_asid; 348 }; 349 typedef struct k_auditinfo_addr k_auditinfo_addr_t; 350 351 struct auditinfo_addr { 352 au_id_t ai_auid; 353 au_mask_t ai_mask; 354 au_tid_addr_t ai_termid; 355 au_asid_t ai_asid; 356 }; 357 358 struct auditinfo_addr64 { 359 au_id_t ai_auid; 360 au_mask_t ai_mask; 361 au_tid64_addr_t ai_termid; 362 au_asid_t ai_asid; 363 }; 364 typedef struct auditinfo_addr64 auditinfo64_addr_t; 365 366 #if defined(_SYSCALL32) 367 struct auditinfo_addr32 { 368 au_id_t ai_auid; 369 au_mask_t ai_mask; 370 au_tid32_addr_t ai_termid; 371 au_asid_t ai_asid; 372 }; 373 374 typedef struct auditinfo_addr32 auditinfo32_addr_t; 375 #endif 376 377 typedef struct auditinfo_addr auditinfo_addr_t; 378 379 struct auditpinfo { 380 pid_t ap_pid; 381 au_id_t ap_auid; 382 au_mask_t ap_mask; 383 au_tid_t ap_termid; 384 au_asid_t ap_asid; 385 }; 386 387 #if defined(_SYSCALL32) 388 struct auditpinfo32 { 389 pid_t ap_pid; 390 au_id_t ap_auid; 391 au_mask_t ap_mask; 392 au_tid32_t ap_termid; 393 au_asid_t ap_asid; 394 }; 395 #endif 396 397 398 struct auditpinfo_addr { 399 pid_t ap_pid; 400 au_id_t ap_auid; 401 au_mask_t ap_mask; 402 au_tid_addr_t ap_termid; 403 au_asid_t ap_asid; 404 }; 405 406 #if defined(_SYSCALL32) 407 struct auditpinfo_addr32 { 408 pid_t ap_pid; 409 au_id_t ap_auid; 410 au_mask_t ap_mask; 411 au_tid32_addr_t ap_termid; 412 au_asid_t ap_asid; 413 }; 414 #endif 415 416 417 struct au_evclass_map { 418 au_event_t ec_number; 419 au_class_t ec_class; 420 }; 421 typedef struct au_evclass_map au_evclass_map_t; 422 423 /* 424 * Audit stat structures (used to be in audit_stat.h 425 */ 426 427 struct audit_stat { 428 unsigned int as_version; /* version of kernel audit code */ 429 unsigned int as_numevent; /* number of kernel audit events */ 430 uint32_t as_generated; /* # records processed */ 431 uint32_t as_nonattrib; /* # non-attributed records produced */ 432 uint32_t as_kernel; /* # records produced by kernel */ 433 uint32_t as_audit; /* # records processed by audit(2) */ 434 uint32_t as_auditctl; /* # records processed by auditctl(2) */ 435 uint32_t as_enqueue; /* # records put onto audit queue */ 436 uint32_t as_written; /* # records written to audit trail */ 437 uint32_t as_wblocked; /* # times write blked on audit queue */ 438 uint32_t as_rblocked; /* # times read blked on audit queue */ 439 uint32_t as_dropped; /* # of dropped audit records */ 440 uint32_t as_totalsize; /* total number bytes of audit data */ 441 uint32_t as_memused; /* no longer used */ 442 }; 443 typedef struct audit_stat au_stat_t; 444 445 /* get kernel audit context dependent on AUDIT_PERZONE policy */ 446 #define GET_KCTX_PZ (audit_policy & AUDIT_PERZONE) ?\ 447 curproc->p_zone->zone_audit_kctxt :\ 448 global_zone->zone_audit_kctxt 449 /* get kernel audit context of global zone */ 450 #define GET_KCTX_GZ global_zone->zone_audit_kctxt 451 /* get kernel audit context of non-global zone */ 452 #define GET_KCTX_NGZ curproc->p_zone->zone_audit_kctxt 453 454 #define AS_INC(a, b, c) atomic_add_32(&(c->auk_statistics.a), (b)) 455 #define AS_DEC(a, b, c) atomic_add_32(&(c->auk_statistics.a), -(b)) 456 457 /* 458 * audit token IPC types (shm, sem, msg) [for ipc attribute] 459 */ 460 461 #define AT_IPC_MSG ((char)1) /* message IPC id */ 462 #define AT_IPC_SEM ((char)2) /* semaphore IPC id */ 463 #define AT_IPC_SHM ((char)3) /* shared memory IPC id */ 464 465 #if defined(_KERNEL) 466 467 #ifdef __cplusplus 468 } 469 #endif 470 471 #include <sys/types.h> 472 #include <sys/model.h> 473 #include <sys/proc.h> 474 #include <sys/stream.h> 475 #include <sys/stropts.h> 476 #include <sys/file.h> 477 #include <sys/pathname.h> 478 #include <sys/vnode.h> 479 #include <sys/systm.h> 480 #include <netinet/in.h> 481 #include <c2/audit_door_infc.h> 482 #include <sys/crypto/ioctladmin.h> 483 #include <sys/netstack.h> 484 #include <sys/zone.h> 485 486 #ifdef __cplusplus 487 extern "C" { 488 #endif 489 490 struct fcntla; 491 struct t_audit_data; 492 struct audit_path; 493 struct priv_set; 494 struct devplcysys; 495 496 struct auditcalls { 497 long code; 498 long a1; 499 long a2; 500 long a3; 501 long a4; 502 long a5; 503 }; 504 505 int audit(caddr_t, int); 506 int auditsys(struct auditcalls *, union rval *); /* fake stub */ 507 void audit_cryptoadm(int, char *, crypto_mech_name_t *, 508 uint_t, uint_t, uint32_t, int); 509 void audit_init(void); 510 void audit_init_module(void); 511 void audit_newproc(struct proc *); 512 void audit_pfree(struct proc *); 513 void audit_thread_create(kthread_id_t); 514 void audit_thread_free(kthread_id_t); 515 int audit_savepath(struct pathname *, struct vnode *, struct vnode *, 516 int, cred_t *); 517 void audit_anchorpath(struct pathname *, int); 518 void audit_symlink(struct pathname *, struct pathname *); 519 void audit_symlink_create(struct vnode *, char *, char *, int); 520 int object_is_public(struct vattr *); 521 void audit_attributes(struct vnode *); 522 void audit_falloc(struct file *); 523 void audit_unfalloc(struct file *); 524 void audit_exit(int, int); 525 void audit_core_start(int); 526 void audit_core_finish(int); 527 void audit_strgetmsg(struct vnode *, struct strbuf *, struct strbuf *, 528 unsigned char *, int *, int); 529 void audit_strputmsg(struct vnode *, struct strbuf *, struct strbuf *, 530 unsigned char, int, int); 531 void audit_closef(struct file *); 532 void audit_setf(struct file *, int); 533 void audit_reboot(void); 534 void audit_vncreate_start(void); 535 void audit_setfsat_path(int argnum); 536 void audit_vncreate_finish(struct vnode *, int); 537 void audit_exec(const char *, const char *, ssize_t, ssize_t, cred_t *); 538 void audit_enterprom(int); 539 void audit_exitprom(int); 540 void audit_chdirec(struct vnode *, struct vnode **); 541 void audit_sock(int, struct queue *, struct msgb *, int); 542 int audit_start(unsigned int, unsigned int, uint32_t, int, klwp_t *); 543 void audit_finish(unsigned int, unsigned int, int, union rval *); 544 int audit_async_start(label_t *, au_event_t, int); 545 void audit_async_finish(caddr_t *, au_event_t, au_emod_t, timestruc_t *); 546 void audit_async_discard_backend(void *); 547 void audit_async_done(caddr_t *, int); 548 void audit_async_drop(caddr_t *, int); 549 550 #ifndef AUK_CONTEXT_T 551 #define AUK_CONTEXT_T 552 typedef struct au_kcontext au_kcontext_t; 553 #endif 554 555 /* Zone audit context setup routine */ 556 void au_zone_setup(void); 557 558 /* 559 * c2audit module states 560 */ 561 #define C2AUDIT_DISABLED 0 /* c2audit module excluded in /etc/system */ 562 #define C2AUDIT_UNLOADED 1 /* c2audit module not loaded */ 563 #define C2AUDIT_LOADED 2 /* c2audit module loaded */ 564 565 uint32_t audit_getstate(void); 566 int au_zone_getstate(const au_kcontext_t *); 567 568 /* The audit mask defining in which case is auditing enabled */ 569 #define AU_AUDIT_MASK (AUC_AUDITING | AUC_NOSPACE) 570 571 /* 572 * Get the given zone audit status. zcontext != NULL serves 573 * as a protection when c2audit module is not loaded. 574 */ 575 #define AU_ZONE_AUDITING(zcontext) \ 576 (audit_active == C2AUDIT_LOADED && \ 577 ((AU_AUDIT_MASK) & au_zone_getstate((zcontext)))) 578 579 /* 580 * Get auditing status 581 */ 582 #define AU_AUDITING() (audit_getstate()) 583 584 int audit_success(au_kcontext_t *, struct t_audit_data *, int, cred_t *); 585 int auditme(au_kcontext_t *, struct t_audit_data *, au_state_t); 586 void audit_fixpath(struct audit_path *, int); 587 void audit_ipc(int, int, void *); 588 void audit_ipcget(int, void *); 589 void audit_fdsend(int, struct file *, int); 590 void audit_fdrecv(int, struct file *); 591 void audit_priv(int, const struct priv_set *, int); 592 void audit_setppriv(int, int, const struct priv_set *, const cred_t *); 593 void audit_devpolicy(int, const struct devplcysys *); 594 void audit_update_context(proc_t *, cred_t *); 595 void audit_kssl(int, void *, int); 596 void audit_pf_policy(int, cred_t *, netstack_t *, char *, boolean_t, int, 597 pid_t); 598 void audit_sec_attributes(caddr_t *, struct vnode *); 599 600 #endif 601 602 #ifdef __cplusplus 603 } 604 #endif 605 606 #endif /* _BSM_AUDIT_H */ 607