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 55 * entered if auditing is disabled, avoiding the function call cost. We 56 * check the thread audit record pointer anyway, as the audit condition 57 * could change, and pre-selection may not have allocated an audit 58 * record for this event. 59 * 60 * XXXAUDIT: Should we assert, in each case, that this field of the record 61 * hasn't already been filled in? 62 */ 63 void 64 audit_arg_addr(void * addr) 65 { 66 struct kaudit_record *ar; 67 68 ar = currecord(); 69 if (ar == NULL) 70 return; 71 72 ar->k_ar.ar_arg_addr = addr; 73 ARG_SET_VALID(ar, ARG_ADDR); 74 } 75 76 void 77 audit_arg_exit(int status, int retval) 78 { 79 struct kaudit_record *ar; 80 81 ar = currecord(); 82 if (ar == NULL) 83 return; 84 85 ar->k_ar.ar_arg_exitstatus = status; 86 ar->k_ar.ar_arg_exitretval = retval; 87 ARG_SET_VALID(ar, ARG_EXIT); 88 } 89 90 void 91 audit_arg_len(int len) 92 { 93 struct kaudit_record *ar; 94 95 ar = currecord(); 96 if (ar == NULL) 97 return; 98 99 ar->k_ar.ar_arg_len = len; 100 ARG_SET_VALID(ar, ARG_LEN); 101 } 102 103 void 104 audit_arg_fd(int fd) 105 { 106 struct kaudit_record *ar; 107 108 ar = currecord(); 109 if (ar == NULL) 110 return; 111 112 ar->k_ar.ar_arg_fd = fd; 113 ARG_SET_VALID(ar, ARG_FD); 114 } 115 116 void 117 audit_arg_fflags(int fflags) 118 { 119 struct kaudit_record *ar; 120 121 ar = currecord(); 122 if (ar == NULL) 123 return; 124 125 ar->k_ar.ar_arg_fflags = fflags; 126 ARG_SET_VALID(ar, ARG_FFLAGS); 127 } 128 129 void 130 audit_arg_gid(gid_t gid) 131 { 132 struct kaudit_record *ar; 133 134 ar = currecord(); 135 if (ar == NULL) 136 return; 137 138 ar->k_ar.ar_arg_gid = gid; 139 ARG_SET_VALID(ar, ARG_GID); 140 } 141 142 void 143 audit_arg_uid(uid_t uid) 144 { 145 struct kaudit_record *ar; 146 147 ar = currecord(); 148 if (ar == NULL) 149 return; 150 151 ar->k_ar.ar_arg_uid = uid; 152 ARG_SET_VALID(ar, ARG_UID); 153 } 154 155 void 156 audit_arg_egid(gid_t egid) 157 { 158 struct kaudit_record *ar; 159 160 ar = currecord(); 161 if (ar == NULL) 162 return; 163 164 ar->k_ar.ar_arg_egid = egid; 165 ARG_SET_VALID(ar, ARG_EGID); 166 } 167 168 void 169 audit_arg_euid(uid_t euid) 170 { 171 struct kaudit_record *ar; 172 173 ar = currecord(); 174 if (ar == NULL) 175 return; 176 177 ar->k_ar.ar_arg_euid = euid; 178 ARG_SET_VALID(ar, ARG_EUID); 179 } 180 181 void 182 audit_arg_rgid(gid_t rgid) 183 { 184 struct kaudit_record *ar; 185 186 ar = currecord(); 187 if (ar == NULL) 188 return; 189 190 ar->k_ar.ar_arg_rgid = rgid; 191 ARG_SET_VALID(ar, ARG_RGID); 192 } 193 194 void 195 audit_arg_ruid(uid_t ruid) 196 { 197 struct kaudit_record *ar; 198 199 ar = currecord(); 200 if (ar == NULL) 201 return; 202 203 ar->k_ar.ar_arg_ruid = ruid; 204 ARG_SET_VALID(ar, ARG_RUID); 205 } 206 207 void 208 audit_arg_sgid(gid_t sgid) 209 { 210 struct kaudit_record *ar; 211 212 ar = currecord(); 213 if (ar == NULL) 214 return; 215 216 ar->k_ar.ar_arg_sgid = sgid; 217 ARG_SET_VALID(ar, ARG_SGID); 218 } 219 220 void 221 audit_arg_suid(uid_t suid) 222 { 223 struct kaudit_record *ar; 224 225 ar = currecord(); 226 if (ar == NULL) 227 return; 228 229 ar->k_ar.ar_arg_suid = suid; 230 ARG_SET_VALID(ar, ARG_SUID); 231 } 232 233 void 234 audit_arg_groupset(gid_t *gidset, u_int gidset_size) 235 { 236 int i; 237 struct kaudit_record *ar; 238 239 ar = currecord(); 240 if (ar == NULL) 241 return; 242 243 for (i = 0; i < gidset_size; i++) 244 ar->k_ar.ar_arg_groups.gidset[i] = gidset[i]; 245 ar->k_ar.ar_arg_groups.gidset_size = gidset_size; 246 ARG_SET_VALID(ar, ARG_GROUPSET); 247 } 248 249 void 250 audit_arg_login(char *login) 251 { 252 struct kaudit_record *ar; 253 254 ar = currecord(); 255 if (ar == NULL) 256 return; 257 258 strlcpy(ar->k_ar.ar_arg_login, login, MAXLOGNAME); 259 ARG_SET_VALID(ar, ARG_LOGIN); 260 } 261 262 void 263 audit_arg_ctlname(int *name, int namelen) 264 { 265 struct kaudit_record *ar; 266 267 ar = currecord(); 268 if (ar == NULL) 269 return; 270 271 bcopy(name, &ar->k_ar.ar_arg_ctlname, namelen * sizeof(int)); 272 ar->k_ar.ar_arg_len = namelen; 273 ARG_SET_VALID(ar, ARG_CTLNAME | ARG_LEN); 274 } 275 276 void 277 audit_arg_mask(int mask) 278 { 279 struct kaudit_record *ar; 280 281 ar = currecord(); 282 if (ar == NULL) 283 return; 284 285 ar->k_ar.ar_arg_mask = mask; 286 ARG_SET_VALID(ar, ARG_MASK); 287 } 288 289 void 290 audit_arg_mode(mode_t mode) 291 { 292 struct kaudit_record *ar; 293 294 ar = currecord(); 295 if (ar == NULL) 296 return; 297 298 ar->k_ar.ar_arg_mode = mode; 299 ARG_SET_VALID(ar, ARG_MODE); 300 } 301 302 void 303 audit_arg_dev(int dev) 304 { 305 struct kaudit_record *ar; 306 307 ar = currecord(); 308 if (ar == NULL) 309 return; 310 311 ar->k_ar.ar_arg_dev = dev; 312 ARG_SET_VALID(ar, ARG_DEV); 313 } 314 315 void 316 audit_arg_value(long value) 317 { 318 struct kaudit_record *ar; 319 320 ar = currecord(); 321 if (ar == NULL) 322 return; 323 324 ar->k_ar.ar_arg_value = value; 325 ARG_SET_VALID(ar, ARG_VALUE); 326 } 327 328 void 329 audit_arg_owner(uid_t uid, gid_t gid) 330 { 331 struct kaudit_record *ar; 332 333 ar = currecord(); 334 if (ar == NULL) 335 return; 336 337 ar->k_ar.ar_arg_uid = uid; 338 ar->k_ar.ar_arg_gid = gid; 339 ARG_SET_VALID(ar, ARG_UID | ARG_GID); 340 } 341 342 void 343 audit_arg_pid(pid_t pid) 344 { 345 struct kaudit_record *ar; 346 347 ar = currecord(); 348 if (ar == NULL) 349 return; 350 351 ar->k_ar.ar_arg_pid = pid; 352 ARG_SET_VALID(ar, ARG_PID); 353 } 354 355 void 356 audit_arg_process(struct proc *p) 357 { 358 struct kaudit_record *ar; 359 360 KASSERT(p != NULL, ("audit_arg_process: p == NULL")); 361 362 PROC_LOCK_ASSERT(p, MA_OWNED); 363 364 ar = currecord(); 365 if (ar == NULL) 366 return; 367 368 ar->k_ar.ar_arg_auid = p->p_au->ai_auid; 369 ar->k_ar.ar_arg_euid = p->p_ucred->cr_uid; 370 ar->k_ar.ar_arg_egid = p->p_ucred->cr_groups[0]; 371 ar->k_ar.ar_arg_ruid = p->p_ucred->cr_ruid; 372 ar->k_ar.ar_arg_rgid = p->p_ucred->cr_rgid; 373 ar->k_ar.ar_arg_asid = p->p_au->ai_asid; 374 ar->k_ar.ar_arg_termid = p->p_au->ai_termid; 375 ar->k_ar.ar_arg_pid = p->p_pid; 376 ARG_SET_VALID(ar, ARG_AUID | ARG_EUID | ARG_EGID | ARG_RUID | 377 ARG_RGID | ARG_ASID | ARG_TERMID | ARG_PID | ARG_PROCESS); 378 } 379 380 void 381 audit_arg_signum(u_int signum) 382 { 383 struct kaudit_record *ar; 384 385 ar = currecord(); 386 if (ar == NULL) 387 return; 388 389 ar->k_ar.ar_arg_signum = signum; 390 ARG_SET_VALID(ar, ARG_SIGNUM); 391 } 392 393 void 394 audit_arg_socket(int sodomain, int sotype, int soprotocol) 395 { 396 struct kaudit_record *ar; 397 398 ar = currecord(); 399 if (ar == NULL) 400 return; 401 402 ar->k_ar.ar_arg_sockinfo.so_domain = sodomain; 403 ar->k_ar.ar_arg_sockinfo.so_type = sotype; 404 ar->k_ar.ar_arg_sockinfo.so_protocol = soprotocol; 405 ARG_SET_VALID(ar, ARG_SOCKINFO); 406 } 407 408 void 409 audit_arg_sockaddr(struct thread *td, struct sockaddr *sa) 410 { 411 struct kaudit_record *ar; 412 413 KASSERT(td != NULL, ("audit_arg_sockaddr: td == NULL")); 414 KASSERT(sa != NULL, ("audit_arg_sockaddr: sa == NULL")); 415 416 ar = currecord(); 417 if (ar == NULL) 418 return; 419 420 bcopy(sa, &ar->k_ar.ar_arg_sockaddr, sa->sa_len); 421 switch (sa->sa_family) { 422 case AF_INET: 423 ARG_SET_VALID(ar, ARG_SADDRINET); 424 break; 425 426 case AF_INET6: 427 ARG_SET_VALID(ar, ARG_SADDRINET6); 428 break; 429 430 case AF_UNIX: 431 audit_arg_upath(td, ((struct sockaddr_un *)sa)->sun_path, 432 ARG_UPATH1); 433 ARG_SET_VALID(ar, ARG_SADDRUNIX); 434 break; 435 /* XXXAUDIT: default:? */ 436 } 437 } 438 439 void 440 audit_arg_auid(uid_t auid) 441 { 442 struct kaudit_record *ar; 443 444 ar = currecord(); 445 if (ar == NULL) 446 return; 447 448 ar->k_ar.ar_arg_auid = auid; 449 ARG_SET_VALID(ar, ARG_AUID); 450 } 451 452 void 453 audit_arg_auditinfo(struct auditinfo *au_info) 454 { 455 struct kaudit_record *ar; 456 457 ar = currecord(); 458 if (ar == NULL) 459 return; 460 461 ar->k_ar.ar_arg_auid = au_info->ai_auid; 462 ar->k_ar.ar_arg_asid = au_info->ai_asid; 463 ar->k_ar.ar_arg_amask.am_success = au_info->ai_mask.am_success; 464 ar->k_ar.ar_arg_amask.am_failure = au_info->ai_mask.am_failure; 465 ar->k_ar.ar_arg_termid.port = au_info->ai_termid.port; 466 ar->k_ar.ar_arg_termid.machine = au_info->ai_termid.machine; 467 ARG_SET_VALID(ar, ARG_AUID | ARG_ASID | ARG_AMASK | ARG_TERMID); 468 } 469 470 void 471 audit_arg_text(char *text) 472 { 473 struct kaudit_record *ar; 474 475 KASSERT(text != NULL, ("audit_arg_text: text == NULL")); 476 477 ar = currecord(); 478 if (ar == NULL) 479 return; 480 481 /* Invalidate the text string */ 482 ar->k_ar.ar_valid_arg &= (ARG_ALL ^ ARG_TEXT); 483 484 if (ar->k_ar.ar_arg_text == NULL) 485 ar->k_ar.ar_arg_text = malloc(MAXPATHLEN, M_AUDITTEXT, 486 M_WAITOK); 487 488 strncpy(ar->k_ar.ar_arg_text, text, MAXPATHLEN); 489 ARG_SET_VALID(ar, ARG_TEXT); 490 } 491 492 void 493 audit_arg_cmd(int cmd) 494 { 495 struct kaudit_record *ar; 496 497 ar = currecord(); 498 if (ar == NULL) 499 return; 500 501 ar->k_ar.ar_arg_cmd = cmd; 502 ARG_SET_VALID(ar, ARG_CMD); 503 } 504 505 void 506 audit_arg_svipc_cmd(int cmd) 507 { 508 struct kaudit_record *ar; 509 510 ar = currecord(); 511 if (ar == NULL) 512 return; 513 514 ar->k_ar.ar_arg_svipc_cmd = cmd; 515 ARG_SET_VALID(ar, ARG_SVIPC_CMD); 516 } 517 518 void 519 audit_arg_svipc_perm(struct ipc_perm *perm) 520 { 521 struct kaudit_record *ar; 522 523 ar = currecord(); 524 if (ar == NULL) 525 return; 526 527 bcopy(perm, &ar->k_ar.ar_arg_svipc_perm, 528 sizeof(ar->k_ar.ar_arg_svipc_perm)); 529 ARG_SET_VALID(ar, ARG_SVIPC_PERM); 530 } 531 532 void 533 audit_arg_svipc_id(int id) 534 { 535 struct kaudit_record *ar; 536 537 ar = currecord(); 538 if (ar == NULL) 539 return; 540 541 ar->k_ar.ar_arg_svipc_id = id; 542 ARG_SET_VALID(ar, ARG_SVIPC_ID); 543 } 544 545 void 546 audit_arg_svipc_addr(void * addr) 547 { 548 struct kaudit_record *ar; 549 550 ar = currecord(); 551 if (ar == NULL) 552 return; 553 554 ar->k_ar.ar_arg_svipc_addr = addr; 555 ARG_SET_VALID(ar, ARG_SVIPC_ADDR); 556 } 557 558 void 559 audit_arg_posix_ipc_perm(uid_t uid, gid_t gid, mode_t mode) 560 { 561 struct kaudit_record *ar; 562 563 ar = currecord(); 564 if (ar == NULL) 565 return; 566 567 ar->k_ar.ar_arg_pipc_perm.pipc_uid = uid; 568 ar->k_ar.ar_arg_pipc_perm.pipc_gid = gid; 569 ar->k_ar.ar_arg_pipc_perm.pipc_mode = mode; 570 ARG_SET_VALID(ar, ARG_POSIX_IPC_PERM); 571 } 572 573 void 574 audit_arg_auditon(union auditon_udata *udata) 575 { 576 struct kaudit_record *ar; 577 578 ar = currecord(); 579 if (ar == NULL) 580 return; 581 582 bcopy((void *)udata, &ar->k_ar.ar_arg_auditon, 583 sizeof(ar->k_ar.ar_arg_auditon)); 584 ARG_SET_VALID(ar, ARG_AUDITON); 585 } 586 587 /* 588 * Audit information about a file, either the file's vnode info, or its 589 * socket address info. 590 */ 591 void 592 audit_arg_file(struct proc *p, struct file *fp) 593 { 594 struct kaudit_record *ar; 595 struct socket *so; 596 struct inpcb *pcb; 597 struct vnode *vp; 598 int vfslocked; 599 600 ar = currecord(); 601 if (ar == NULL) 602 return; 603 604 switch (fp->f_type) { 605 case DTYPE_VNODE: 606 case DTYPE_FIFO: 607 /* 608 * XXXAUDIT: Only possibly to record as first vnode? 609 */ 610 vp = fp->f_vnode; 611 vfslocked = VFS_LOCK_GIANT(vp->v_mount); 612 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, curthread); 613 audit_arg_vnode(vp, ARG_VNODE1); 614 VOP_UNLOCK(vp, 0, curthread); 615 VFS_UNLOCK_GIANT(vfslocked); 616 break; 617 618 case DTYPE_SOCKET: 619 so = (struct socket *)fp->f_data; 620 SOCK_LOCK(so); 621 if (INP_CHECK_SOCKAF(so, PF_INET)) { 622 if (so->so_pcb == NULL) 623 return; 624 ar->k_ar.ar_arg_sockinfo.so_type = 625 so->so_type; 626 ar->k_ar.ar_arg_sockinfo.so_domain = 627 INP_SOCKAF(so); 628 ar->k_ar.ar_arg_sockinfo.so_protocol = 629 so->so_proto->pr_protocol; 630 pcb = (struct inpcb *)so->so_pcb; 631 ar->k_ar.ar_arg_sockinfo.so_raddr = 632 pcb->inp_faddr.s_addr; 633 ar->k_ar.ar_arg_sockinfo.so_laddr = 634 pcb->inp_laddr.s_addr; 635 ar->k_ar.ar_arg_sockinfo.so_rport = 636 pcb->inp_fport; 637 ar->k_ar.ar_arg_sockinfo.so_lport = 638 pcb->inp_lport; 639 ARG_SET_VALID(ar, ARG_SOCKINFO); 640 } 641 SOCK_UNLOCK(so); 642 break; 643 644 default: 645 /* XXXAUDIT: else? */ 646 break; 647 } 648 649 } 650 651 /* 652 * Store a path as given by the user process for auditing into the audit 653 * record stored on the user thread. This function will allocate the memory 654 * to store the path info if not already available. This memory will be freed 655 * when the audit record is freed. 656 * 657 * XXXAUDIT: Possibly assert that the memory isn't already allocated? 658 */ 659 void 660 audit_arg_upath(struct thread *td, char *upath, u_int64_t flag) 661 { 662 struct kaudit_record *ar; 663 char **pathp; 664 665 KASSERT(td != NULL, ("audit_arg_upath: td == NULL")); 666 KASSERT(upath != NULL, ("audit_arg_upath: upath == NULL")); 667 668 ar = currecord(); 669 if (ar == NULL) 670 return; 671 672 KASSERT((flag == ARG_UPATH1) || (flag == ARG_UPATH2), 673 ("audit_arg_upath: flag %llu", (unsigned long long)flag)); 674 KASSERT((flag != ARG_UPATH1) || (flag != ARG_UPATH2), 675 ("audit_arg_upath: flag %llu", (unsigned long long)flag)); 676 677 if (flag == ARG_UPATH1) 678 pathp = &ar->k_ar.ar_arg_upath1; 679 else 680 pathp = &ar->k_ar.ar_arg_upath2; 681 682 if (*pathp == NULL) 683 *pathp = malloc(MAXPATHLEN, M_AUDITPATH, M_WAITOK); 684 685 canon_path(td, upath, *pathp); 686 687 ARG_SET_VALID(ar, flag); 688 } 689 690 /* 691 * Function to save the path and vnode attr information into the audit 692 * record. 693 * 694 * It is assumed that the caller will hold any vnode locks necessary to 695 * perform a VOP_GETATTR() on the passed vnode. 696 * 697 * XXX: The attr code is very similar to vfs_vnops.c:vn_stat(), but 698 * always provides access to the generation number as we need that 699 * to construct the BSM file ID. 700 * XXX: We should accept the process argument from the caller, since 701 * it's very likely they already have a reference. 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