1 /* 2 * Copyright (c) 1999-2005 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 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of 14 * its contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR 21 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 25 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 26 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27 * POSSIBILITY OF SUCH DAMAGE. 28 * 29 * $FreeBSD$ 30 */ 31 32 #include <sys/param.h> 33 #include <sys/filedesc.h> 34 #include <sys/ipc.h> 35 #include <sys/mount.h> 36 #include <sys/proc.h> 37 #include <sys/socket.h> 38 #include <sys/socketvar.h> 39 #include <sys/protosw.h> 40 #include <sys/domain.h> 41 #include <sys/sbuf.h> 42 #include <sys/systm.h> 43 #include <sys/un.h> 44 #include <sys/vnode.h> 45 46 #include <netinet/in.h> 47 #include <netinet/in_pcb.h> 48 49 #include <security/audit/audit.h> 50 #include <security/audit/audit_private.h> 51 52 /* 53 * Calls to manipulate elements of the audit record structure from system 54 * call code. Macro wrappers will prevent this functions from being entered 55 * if auditing is disabled, avoiding the function call cost. We check the 56 * thread audit record pointer anyway, as the audit condition could change, 57 * and pre-selection may not have allocated an audit record for this event. 58 * 59 * XXXAUDIT: Should we assert, in each case, that this field of the record 60 * hasn't already been filled in? 61 */ 62 void 63 audit_arg_addr(void *addr) 64 { 65 struct kaudit_record *ar; 66 67 ar = currecord(); 68 if (ar == NULL) 69 return; 70 71 ar->k_ar.ar_arg_addr = addr; 72 ARG_SET_VALID(ar, ARG_ADDR); 73 } 74 75 void 76 audit_arg_exit(int status, int retval) 77 { 78 struct kaudit_record *ar; 79 80 ar = currecord(); 81 if (ar == NULL) 82 return; 83 84 ar->k_ar.ar_arg_exitstatus = status; 85 ar->k_ar.ar_arg_exitretval = retval; 86 ARG_SET_VALID(ar, ARG_EXIT); 87 } 88 89 void 90 audit_arg_len(int len) 91 { 92 struct kaudit_record *ar; 93 94 ar = currecord(); 95 if (ar == NULL) 96 return; 97 98 ar->k_ar.ar_arg_len = len; 99 ARG_SET_VALID(ar, ARG_LEN); 100 } 101 102 void 103 audit_arg_fd(int fd) 104 { 105 struct kaudit_record *ar; 106 107 ar = currecord(); 108 if (ar == NULL) 109 return; 110 111 ar->k_ar.ar_arg_fd = fd; 112 ARG_SET_VALID(ar, ARG_FD); 113 } 114 115 void 116 audit_arg_fflags(int fflags) 117 { 118 struct kaudit_record *ar; 119 120 ar = currecord(); 121 if (ar == NULL) 122 return; 123 124 ar->k_ar.ar_arg_fflags = fflags; 125 ARG_SET_VALID(ar, ARG_FFLAGS); 126 } 127 128 void 129 audit_arg_gid(gid_t gid) 130 { 131 struct kaudit_record *ar; 132 133 ar = currecord(); 134 if (ar == NULL) 135 return; 136 137 ar->k_ar.ar_arg_gid = gid; 138 ARG_SET_VALID(ar, ARG_GID); 139 } 140 141 void 142 audit_arg_uid(uid_t uid) 143 { 144 struct kaudit_record *ar; 145 146 ar = currecord(); 147 if (ar == NULL) 148 return; 149 150 ar->k_ar.ar_arg_uid = uid; 151 ARG_SET_VALID(ar, ARG_UID); 152 } 153 154 void 155 audit_arg_egid(gid_t egid) 156 { 157 struct kaudit_record *ar; 158 159 ar = currecord(); 160 if (ar == NULL) 161 return; 162 163 ar->k_ar.ar_arg_egid = egid; 164 ARG_SET_VALID(ar, ARG_EGID); 165 } 166 167 void 168 audit_arg_euid(uid_t euid) 169 { 170 struct kaudit_record *ar; 171 172 ar = currecord(); 173 if (ar == NULL) 174 return; 175 176 ar->k_ar.ar_arg_euid = euid; 177 ARG_SET_VALID(ar, ARG_EUID); 178 } 179 180 void 181 audit_arg_rgid(gid_t rgid) 182 { 183 struct kaudit_record *ar; 184 185 ar = currecord(); 186 if (ar == NULL) 187 return; 188 189 ar->k_ar.ar_arg_rgid = rgid; 190 ARG_SET_VALID(ar, ARG_RGID); 191 } 192 193 void 194 audit_arg_ruid(uid_t ruid) 195 { 196 struct kaudit_record *ar; 197 198 ar = currecord(); 199 if (ar == NULL) 200 return; 201 202 ar->k_ar.ar_arg_ruid = ruid; 203 ARG_SET_VALID(ar, ARG_RUID); 204 } 205 206 void 207 audit_arg_sgid(gid_t sgid) 208 { 209 struct kaudit_record *ar; 210 211 ar = currecord(); 212 if (ar == NULL) 213 return; 214 215 ar->k_ar.ar_arg_sgid = sgid; 216 ARG_SET_VALID(ar, ARG_SGID); 217 } 218 219 void 220 audit_arg_suid(uid_t suid) 221 { 222 struct kaudit_record *ar; 223 224 ar = currecord(); 225 if (ar == NULL) 226 return; 227 228 ar->k_ar.ar_arg_suid = suid; 229 ARG_SET_VALID(ar, ARG_SUID); 230 } 231 232 void 233 audit_arg_groupset(gid_t *gidset, u_int gidset_size) 234 { 235 int i; 236 struct kaudit_record *ar; 237 238 ar = currecord(); 239 if (ar == NULL) 240 return; 241 242 for (i = 0; i < gidset_size; i++) 243 ar->k_ar.ar_arg_groups.gidset[i] = gidset[i]; 244 ar->k_ar.ar_arg_groups.gidset_size = gidset_size; 245 ARG_SET_VALID(ar, ARG_GROUPSET); 246 } 247 248 void 249 audit_arg_login(char *login) 250 { 251 struct kaudit_record *ar; 252 253 ar = currecord(); 254 if (ar == NULL) 255 return; 256 257 strlcpy(ar->k_ar.ar_arg_login, login, MAXLOGNAME); 258 ARG_SET_VALID(ar, ARG_LOGIN); 259 } 260 261 void 262 audit_arg_ctlname(int *name, int namelen) 263 { 264 struct kaudit_record *ar; 265 266 ar = currecord(); 267 if (ar == NULL) 268 return; 269 270 bcopy(name, &ar->k_ar.ar_arg_ctlname, namelen * sizeof(int)); 271 ar->k_ar.ar_arg_len = namelen; 272 ARG_SET_VALID(ar, ARG_CTLNAME | ARG_LEN); 273 } 274 275 void 276 audit_arg_mask(int mask) 277 { 278 struct kaudit_record *ar; 279 280 ar = currecord(); 281 if (ar == NULL) 282 return; 283 284 ar->k_ar.ar_arg_mask = mask; 285 ARG_SET_VALID(ar, ARG_MASK); 286 } 287 288 void 289 audit_arg_mode(mode_t mode) 290 { 291 struct kaudit_record *ar; 292 293 ar = currecord(); 294 if (ar == NULL) 295 return; 296 297 ar->k_ar.ar_arg_mode = mode; 298 ARG_SET_VALID(ar, ARG_MODE); 299 } 300 301 void 302 audit_arg_dev(int dev) 303 { 304 struct kaudit_record *ar; 305 306 ar = currecord(); 307 if (ar == NULL) 308 return; 309 310 ar->k_ar.ar_arg_dev = dev; 311 ARG_SET_VALID(ar, ARG_DEV); 312 } 313 314 void 315 audit_arg_value(long value) 316 { 317 struct kaudit_record *ar; 318 319 ar = currecord(); 320 if (ar == NULL) 321 return; 322 323 ar->k_ar.ar_arg_value = value; 324 ARG_SET_VALID(ar, ARG_VALUE); 325 } 326 327 void 328 audit_arg_owner(uid_t uid, gid_t gid) 329 { 330 struct kaudit_record *ar; 331 332 ar = currecord(); 333 if (ar == NULL) 334 return; 335 336 ar->k_ar.ar_arg_uid = uid; 337 ar->k_ar.ar_arg_gid = gid; 338 ARG_SET_VALID(ar, ARG_UID | ARG_GID); 339 } 340 341 void 342 audit_arg_pid(pid_t pid) 343 { 344 struct kaudit_record *ar; 345 346 ar = currecord(); 347 if (ar == NULL) 348 return; 349 350 ar->k_ar.ar_arg_pid = pid; 351 ARG_SET_VALID(ar, ARG_PID); 352 } 353 354 void 355 audit_arg_process(struct proc *p) 356 { 357 struct kaudit_record *ar; 358 359 KASSERT(p != NULL, ("audit_arg_process: p == NULL")); 360 361 PROC_LOCK_ASSERT(p, MA_OWNED); 362 363 ar = currecord(); 364 if (ar == NULL) 365 return; 366 367 ar->k_ar.ar_arg_auid = p->p_ucred->cr_audit.ai_auid; 368 ar->k_ar.ar_arg_euid = p->p_ucred->cr_uid; 369 ar->k_ar.ar_arg_egid = p->p_ucred->cr_groups[0]; 370 ar->k_ar.ar_arg_ruid = p->p_ucred->cr_ruid; 371 ar->k_ar.ar_arg_rgid = p->p_ucred->cr_rgid; 372 ar->k_ar.ar_arg_asid = p->p_ucred->cr_audit.ai_asid; 373 ar->k_ar.ar_arg_termid_addr = p->p_ucred->cr_audit.ai_termid; 374 ar->k_ar.ar_arg_pid = p->p_pid; 375 ARG_SET_VALID(ar, ARG_AUID | ARG_EUID | ARG_EGID | ARG_RUID | 376 ARG_RGID | ARG_ASID | ARG_TERMID_ADDR | ARG_PID | ARG_PROCESS); 377 } 378 379 void 380 audit_arg_signum(u_int signum) 381 { 382 struct kaudit_record *ar; 383 384 ar = currecord(); 385 if (ar == NULL) 386 return; 387 388 ar->k_ar.ar_arg_signum = signum; 389 ARG_SET_VALID(ar, ARG_SIGNUM); 390 } 391 392 void 393 audit_arg_socket(int sodomain, int sotype, int soprotocol) 394 { 395 struct kaudit_record *ar; 396 397 ar = currecord(); 398 if (ar == NULL) 399 return; 400 401 ar->k_ar.ar_arg_sockinfo.so_domain = sodomain; 402 ar->k_ar.ar_arg_sockinfo.so_type = sotype; 403 ar->k_ar.ar_arg_sockinfo.so_protocol = soprotocol; 404 ARG_SET_VALID(ar, ARG_SOCKINFO); 405 } 406 407 void 408 audit_arg_sockaddr(struct thread *td, struct sockaddr *sa) 409 { 410 struct kaudit_record *ar; 411 412 KASSERT(td != NULL, ("audit_arg_sockaddr: td == NULL")); 413 KASSERT(sa != NULL, ("audit_arg_sockaddr: sa == NULL")); 414 415 ar = currecord(); 416 if (ar == NULL) 417 return; 418 419 bcopy(sa, &ar->k_ar.ar_arg_sockaddr, sa->sa_len); 420 switch (sa->sa_family) { 421 case AF_INET: 422 ARG_SET_VALID(ar, ARG_SADDRINET); 423 break; 424 425 case AF_INET6: 426 ARG_SET_VALID(ar, ARG_SADDRINET6); 427 break; 428 429 case AF_UNIX: 430 audit_arg_upath(td, ((struct sockaddr_un *)sa)->sun_path, 431 ARG_UPATH1); 432 ARG_SET_VALID(ar, ARG_SADDRUNIX); 433 break; 434 /* XXXAUDIT: default:? */ 435 } 436 } 437 438 void 439 audit_arg_auid(uid_t auid) 440 { 441 struct kaudit_record *ar; 442 443 ar = currecord(); 444 if (ar == NULL) 445 return; 446 447 ar->k_ar.ar_arg_auid = auid; 448 ARG_SET_VALID(ar, ARG_AUID); 449 } 450 451 void 452 audit_arg_auditinfo(struct auditinfo *au_info) 453 { 454 struct kaudit_record *ar; 455 456 ar = currecord(); 457 if (ar == NULL) 458 return; 459 460 ar->k_ar.ar_arg_auid = au_info->ai_auid; 461 ar->k_ar.ar_arg_asid = au_info->ai_asid; 462 ar->k_ar.ar_arg_amask.am_success = au_info->ai_mask.am_success; 463 ar->k_ar.ar_arg_amask.am_failure = au_info->ai_mask.am_failure; 464 ar->k_ar.ar_arg_termid.port = au_info->ai_termid.port; 465 ar->k_ar.ar_arg_termid.machine = au_info->ai_termid.machine; 466 ARG_SET_VALID(ar, ARG_AUID | ARG_ASID | ARG_AMASK | ARG_TERMID); 467 } 468 469 void 470 audit_arg_text(char *text) 471 { 472 struct kaudit_record *ar; 473 474 KASSERT(text != NULL, ("audit_arg_text: text == NULL")); 475 476 ar = currecord(); 477 if (ar == NULL) 478 return; 479 480 /* Invalidate the text string */ 481 ar->k_ar.ar_valid_arg &= (ARG_ALL ^ ARG_TEXT); 482 483 if (ar->k_ar.ar_arg_text == NULL) 484 ar->k_ar.ar_arg_text = malloc(MAXPATHLEN, M_AUDITTEXT, 485 M_WAITOK); 486 487 strncpy(ar->k_ar.ar_arg_text, text, MAXPATHLEN); 488 ARG_SET_VALID(ar, ARG_TEXT); 489 } 490 491 void 492 audit_arg_cmd(int cmd) 493 { 494 struct kaudit_record *ar; 495 496 ar = currecord(); 497 if (ar == NULL) 498 return; 499 500 ar->k_ar.ar_arg_cmd = cmd; 501 ARG_SET_VALID(ar, ARG_CMD); 502 } 503 504 void 505 audit_arg_svipc_cmd(int cmd) 506 { 507 struct kaudit_record *ar; 508 509 ar = currecord(); 510 if (ar == NULL) 511 return; 512 513 ar->k_ar.ar_arg_svipc_cmd = cmd; 514 ARG_SET_VALID(ar, ARG_SVIPC_CMD); 515 } 516 517 void 518 audit_arg_svipc_perm(struct ipc_perm *perm) 519 { 520 struct kaudit_record *ar; 521 522 ar = currecord(); 523 if (ar == NULL) 524 return; 525 526 bcopy(perm, &ar->k_ar.ar_arg_svipc_perm, 527 sizeof(ar->k_ar.ar_arg_svipc_perm)); 528 ARG_SET_VALID(ar, ARG_SVIPC_PERM); 529 } 530 531 void 532 audit_arg_svipc_id(int id) 533 { 534 struct kaudit_record *ar; 535 536 ar = currecord(); 537 if (ar == NULL) 538 return; 539 540 ar->k_ar.ar_arg_svipc_id = id; 541 ARG_SET_VALID(ar, ARG_SVIPC_ID); 542 } 543 544 void 545 audit_arg_svipc_addr(void * addr) 546 { 547 struct kaudit_record *ar; 548 549 ar = currecord(); 550 if (ar == NULL) 551 return; 552 553 ar->k_ar.ar_arg_svipc_addr = addr; 554 ARG_SET_VALID(ar, ARG_SVIPC_ADDR); 555 } 556 557 void 558 audit_arg_posix_ipc_perm(uid_t uid, gid_t gid, mode_t mode) 559 { 560 struct kaudit_record *ar; 561 562 ar = currecord(); 563 if (ar == NULL) 564 return; 565 566 ar->k_ar.ar_arg_pipc_perm.pipc_uid = uid; 567 ar->k_ar.ar_arg_pipc_perm.pipc_gid = gid; 568 ar->k_ar.ar_arg_pipc_perm.pipc_mode = mode; 569 ARG_SET_VALID(ar, ARG_POSIX_IPC_PERM); 570 } 571 572 void 573 audit_arg_auditon(union auditon_udata *udata) 574 { 575 struct kaudit_record *ar; 576 577 ar = currecord(); 578 if (ar == NULL) 579 return; 580 581 bcopy((void *)udata, &ar->k_ar.ar_arg_auditon, 582 sizeof(ar->k_ar.ar_arg_auditon)); 583 ARG_SET_VALID(ar, ARG_AUDITON); 584 } 585 586 /* 587 * Audit information about a file, either the file's vnode info, or its 588 * socket address info. 589 */ 590 void 591 audit_arg_file(struct proc *p, struct file *fp) 592 { 593 struct kaudit_record *ar; 594 struct socket *so; 595 struct inpcb *pcb; 596 struct vnode *vp; 597 int vfslocked; 598 599 ar = currecord(); 600 if (ar == NULL) 601 return; 602 603 switch (fp->f_type) { 604 case DTYPE_VNODE: 605 case DTYPE_FIFO: 606 /* 607 * XXXAUDIT: Only possibly to record as first vnode? 608 */ 609 vp = fp->f_vnode; 610 vfslocked = VFS_LOCK_GIANT(vp->v_mount); 611 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, curthread); 612 audit_arg_vnode(vp, ARG_VNODE1); 613 VOP_UNLOCK(vp, 0, curthread); 614 VFS_UNLOCK_GIANT(vfslocked); 615 break; 616 617 case DTYPE_SOCKET: 618 so = (struct socket *)fp->f_data; 619 if (INP_CHECK_SOCKAF(so, PF_INET)) { 620 SOCK_LOCK(so); 621 ar->k_ar.ar_arg_sockinfo.so_type = 622 so->so_type; 623 ar->k_ar.ar_arg_sockinfo.so_domain = 624 INP_SOCKAF(so); 625 ar->k_ar.ar_arg_sockinfo.so_protocol = 626 so->so_proto->pr_protocol; 627 SOCK_UNLOCK(so); 628 pcb = (struct inpcb *)so->so_pcb; 629 INP_LOCK(pcb); 630 ar->k_ar.ar_arg_sockinfo.so_raddr = 631 pcb->inp_faddr.s_addr; 632 ar->k_ar.ar_arg_sockinfo.so_laddr = 633 pcb->inp_laddr.s_addr; 634 ar->k_ar.ar_arg_sockinfo.so_rport = 635 pcb->inp_fport; 636 ar->k_ar.ar_arg_sockinfo.so_lport = 637 pcb->inp_lport; 638 INP_UNLOCK(pcb); 639 ARG_SET_VALID(ar, ARG_SOCKINFO); 640 } 641 break; 642 643 default: 644 /* XXXAUDIT: else? */ 645 break; 646 } 647 } 648 649 /* 650 * Store a path as given by the user process for auditing into the audit 651 * record stored on the user thread. This function will allocate the memory 652 * to store the path info if not already available. This memory will be freed 653 * when the audit record is freed. 654 * 655 * XXXAUDIT: Possibly assert that the memory isn't already allocated? 656 */ 657 void 658 audit_arg_upath(struct thread *td, char *upath, u_int64_t flag) 659 { 660 struct kaudit_record *ar; 661 char **pathp; 662 663 KASSERT(td != NULL, ("audit_arg_upath: td == NULL")); 664 KASSERT(upath != NULL, ("audit_arg_upath: upath == NULL")); 665 666 ar = currecord(); 667 if (ar == NULL) 668 return; 669 670 KASSERT((flag == ARG_UPATH1) || (flag == ARG_UPATH2), 671 ("audit_arg_upath: flag %llu", (unsigned long long)flag)); 672 KASSERT((flag != ARG_UPATH1) || (flag != ARG_UPATH2), 673 ("audit_arg_upath: flag %llu", (unsigned long long)flag)); 674 675 if (flag == ARG_UPATH1) 676 pathp = &ar->k_ar.ar_arg_upath1; 677 else 678 pathp = &ar->k_ar.ar_arg_upath2; 679 680 if (*pathp == NULL) 681 *pathp = malloc(MAXPATHLEN, M_AUDITPATH, M_WAITOK); 682 683 canon_path(td, upath, *pathp); 684 685 ARG_SET_VALID(ar, flag); 686 } 687 688 /* 689 * Function to save the path and vnode attr information into the audit 690 * record. 691 * 692 * It is assumed that the caller will hold any vnode locks necessary to 693 * perform a VOP_GETATTR() on the passed vnode. 694 * 695 * XXX: The attr code is very similar to vfs_vnops.c:vn_stat(), but always 696 * provides access to the generation number as we need that to construct the 697 * BSM file ID. 698 * 699 * XXX: We should accept the process argument from the caller, since it's 700 * very likely they already have a reference. 701 * 702 * XXX: Error handling in this function is poor. 703 * 704 * XXXAUDIT: Possibly KASSERT the path pointer is NULL? 705 */ 706 void 707 audit_arg_vnode(struct vnode *vp, u_int64_t flags) 708 { 709 struct kaudit_record *ar; 710 struct vattr vattr; 711 int error; 712 struct vnode_au_info *vnp; 713 714 KASSERT(vp != NULL, ("audit_arg_vnode: vp == NULL")); 715 KASSERT((flags == ARG_VNODE1) || (flags == ARG_VNODE2), 716 ("audit_arg_vnode: flags %jd", (intmax_t)flags)); 717 718 /* 719 * Assume that if the caller is calling audit_arg_vnode() on a 720 * non-MPSAFE vnode, then it will have acquired Giant. 721 */ 722 VFS_ASSERT_GIANT(vp->v_mount); 723 ASSERT_VOP_LOCKED(vp, "audit_arg_vnode"); 724 725 ar = currecord(); 726 if (ar == NULL) 727 return; 728 729 /* 730 * XXXAUDIT: The below clears, and then resets the flags for valid 731 * arguments. Ideally, either the new vnode is used, or the old one 732 * would be. 733 */ 734 if (flags & ARG_VNODE1) { 735 ar->k_ar.ar_valid_arg &= (ARG_ALL ^ ARG_VNODE1); 736 vnp = &ar->k_ar.ar_arg_vnode1; 737 } else { 738 ar->k_ar.ar_valid_arg &= (ARG_ALL ^ ARG_VNODE2); 739 vnp = &ar->k_ar.ar_arg_vnode2; 740 } 741 742 error = VOP_GETATTR(vp, &vattr, curthread->td_ucred, curthread); 743 if (error) { 744 /* XXX: How to handle this case? */ 745 return; 746 } 747 748 vnp->vn_mode = vattr.va_mode; 749 vnp->vn_uid = vattr.va_uid; 750 vnp->vn_gid = vattr.va_gid; 751 vnp->vn_dev = vattr.va_rdev; 752 vnp->vn_fsid = vattr.va_fsid; 753 vnp->vn_fileid = vattr.va_fileid; 754 vnp->vn_gen = vattr.va_gen; 755 if (flags & ARG_VNODE1) 756 ARG_SET_VALID(ar, ARG_VNODE1); 757 else 758 ARG_SET_VALID(ar, ARG_VNODE2); 759 } 760 761 /* 762 * Audit the argument strings passed to exec. 763 */ 764 void 765 audit_arg_argv(char *argv, int argc, int length) 766 { 767 struct kaudit_record *ar; 768 769 if (audit_argv == 0) 770 return; 771 772 ar = currecord(); 773 if (ar == NULL) 774 return; 775 776 ar->k_ar.ar_arg_argv = malloc(length, M_AUDITTEXT, M_WAITOK); 777 bcopy(argv, ar->k_ar.ar_arg_argv, length); 778 ar->k_ar.ar_arg_argc = argc; 779 ARG_SET_VALID(ar, ARG_ARGV); 780 } 781 782 /* 783 * Audit the environment strings passed to exec. 784 */ 785 void 786 audit_arg_envv(char *envv, int envc, int length) 787 { 788 struct kaudit_record *ar; 789 790 if (audit_arge == 0) 791 return; 792 793 ar = currecord(); 794 if (ar == NULL) 795 return; 796 797 ar->k_ar.ar_arg_envv = malloc(length, M_AUDITTEXT, M_WAITOK); 798 bcopy(envv, ar->k_ar.ar_arg_envv, length); 799 ar->k_ar.ar_arg_envc = envc; 800 ARG_SET_VALID(ar, ARG_ENVV); 801 } 802 803 /* 804 * The close() system call uses it's own audit call to capture the path/vnode 805 * information because those pieces are not easily obtained within the system 806 * call itself. 807 */ 808 void 809 audit_sysclose(struct thread *td, int fd) 810 { 811 struct kaudit_record *ar; 812 struct vnode *vp; 813 struct file *fp; 814 int vfslocked; 815 816 KASSERT(td != NULL, ("audit_sysclose: td == NULL")); 817 818 ar = currecord(); 819 if (ar == NULL) 820 return; 821 822 audit_arg_fd(fd); 823 824 if (getvnode(td->td_proc->p_fd, fd, &fp) != 0) 825 return; 826 827 vp = fp->f_vnode; 828 vfslocked = VFS_LOCK_GIANT(vp->v_mount); 829 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 830 audit_arg_vnode(vp, ARG_VNODE1); 831 VOP_UNLOCK(vp, 0, td); 832 VFS_UNLOCK_GIANT(vfslocked); 833 fdrop(fp, td); 834 } 835