1 /*- 2 * Copyright (c) 1988, 1993 3 * The Regents of the University of California. 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 the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND 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 THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR 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, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #ifndef lint 31 static const char copyright[] = 32 "@(#) Copyright (c) 1988, 1993\n\ 33 The Regents of the University of California. All rights reserved.\n"; 34 #endif /* not lint */ 35 36 #ifndef lint 37 #if 0 38 static char sccsid[] = "@(#)kdump.c 8.1 (Berkeley) 6/6/93"; 39 #endif 40 #endif /* not lint */ 41 #include <sys/cdefs.h> 42 __FBSDID("$FreeBSD$"); 43 44 #define _WANT_KERNEL_ERRNO 45 #include <sys/param.h> 46 #include <sys/capsicum.h> 47 #include <sys/errno.h> 48 #include <sys/time.h> 49 #include <sys/uio.h> 50 #include <sys/ktrace.h> 51 #include <sys/ioctl.h> 52 #include <sys/socket.h> 53 #include <sys/stat.h> 54 #include <sys/sysent.h> 55 #include <sys/umtx.h> 56 #include <sys/un.h> 57 #include <sys/queue.h> 58 #include <sys/wait.h> 59 #ifdef HAVE_LIBCASPER 60 #include <sys/nv.h> 61 #endif 62 #include <arpa/inet.h> 63 #include <netinet/in.h> 64 #include <ctype.h> 65 #include <capsicum_helpers.h> 66 #include <err.h> 67 #include <grp.h> 68 #include <inttypes.h> 69 #include <locale.h> 70 #include <netdb.h> 71 #include <nl_types.h> 72 #include <pwd.h> 73 #include <stddef.h> 74 #include <stdio.h> 75 #include <stdlib.h> 76 #include <string.h> 77 #include <sysdecode.h> 78 #include <time.h> 79 #include <unistd.h> 80 #include <vis.h> 81 #include "ktrace.h" 82 83 #ifdef HAVE_LIBCASPER 84 #include <libcasper.h> 85 86 #include <casper/cap_grp.h> 87 #include <casper/cap_pwd.h> 88 #endif 89 90 u_int abidump(struct ktr_header *); 91 int fetchprocinfo(struct ktr_header *, u_int *); 92 int fread_tail(void *, int, int); 93 void dumpheader(struct ktr_header *); 94 void ktrsyscall(struct ktr_syscall *, u_int); 95 void ktrsysret(struct ktr_sysret *, u_int); 96 void ktrnamei(char *, int); 97 void hexdump(char *, int, int); 98 void visdump(char *, int, int); 99 void ktrgenio(struct ktr_genio *, int); 100 void ktrpsig(struct ktr_psig *); 101 void ktrcsw(struct ktr_csw *); 102 void ktrcsw_old(struct ktr_csw_old *); 103 void ktruser(int, void *); 104 void ktrcaprights(cap_rights_t *); 105 void ktritimerval(struct itimerval *it); 106 void ktrsockaddr(struct sockaddr *); 107 void ktrstat(struct stat *); 108 void ktrstruct(char *, size_t); 109 void ktrcapfail(struct ktr_cap_fail *); 110 void ktrfault(struct ktr_fault *); 111 void ktrfaultend(struct ktr_faultend *); 112 void usage(void); 113 114 #define TIMESTAMP_NONE 0x0 115 #define TIMESTAMP_ABSOLUTE 0x1 116 #define TIMESTAMP_ELAPSED 0x2 117 #define TIMESTAMP_RELATIVE 0x4 118 119 static int timestamp, decimal, fancy = 1, suppressdata, tail, threads, maxdata, 120 resolv = 0, abiflag = 0, syscallno = 0; 121 static const char *tracefile = DEF_TRACEFILE; 122 static struct ktr_header ktr_header; 123 124 #define TIME_FORMAT "%b %e %T %Y" 125 #define eqs(s1, s2) (strcmp((s1), (s2)) == 0) 126 127 #define print_number64(first,i,n,c) do { \ 128 uint64_t __v; \ 129 \ 130 if (quad_align && (((ptrdiff_t)((i) - (first))) & 1) == 1) { \ 131 (i)++; \ 132 (n)--; \ 133 } \ 134 if (quad_slots == 2) \ 135 __v = (uint64_t)(uint32_t)(i)[0] | \ 136 ((uint64_t)(uint32_t)(i)[1]) << 32; \ 137 else \ 138 __v = (uint64_t)*(i); \ 139 if (decimal) \ 140 printf("%c%jd", (c), (intmax_t)__v); \ 141 else \ 142 printf("%c%#jx", (c), (uintmax_t)__v); \ 143 (i) += quad_slots; \ 144 (n) -= quad_slots; \ 145 (c) = ','; \ 146 } while (0) 147 148 #define print_number(i,n,c) do { \ 149 if (decimal) \ 150 printf("%c%jd", c, (intmax_t)*i); \ 151 else \ 152 printf("%c%#jx", c, (uintmax_t)(u_register_t)*i); \ 153 i++; \ 154 n--; \ 155 c = ','; \ 156 } while (0) 157 158 struct proc_info 159 { 160 TAILQ_ENTRY(proc_info) info; 161 u_int sv_flags; 162 pid_t pid; 163 }; 164 165 static TAILQ_HEAD(trace_procs, proc_info) trace_procs; 166 167 #ifdef HAVE_LIBCASPER 168 static cap_channel_t *cappwd, *capgrp; 169 #endif 170 171 static void 172 strerror_init(void) 173 { 174 175 /* 176 * Cache NLS data before entering capability mode. 177 * XXXPJD: There should be strerror_init() and strsignal_init() in libc. 178 */ 179 (void)catopen("libc", NL_CAT_LOCALE); 180 } 181 182 static void 183 localtime_init(void) 184 { 185 time_t ltime; 186 187 /* 188 * Allow localtime(3) to cache /etc/localtime content before entering 189 * capability mode. 190 * XXXPJD: There should be localtime_init() in libc. 191 */ 192 (void)time(<ime); 193 (void)localtime(<ime); 194 } 195 196 #ifdef HAVE_LIBCASPER 197 static int 198 cappwdgrp_setup(cap_channel_t **cappwdp, cap_channel_t **capgrpp) 199 { 200 cap_channel_t *capcas, *cappwdloc, *capgrploc; 201 const char *cmds[1], *fields[1]; 202 203 capcas = cap_init(); 204 if (capcas == NULL) { 205 err(1, "unable to create casper process"); 206 exit(1); 207 } 208 cappwdloc = cap_service_open(capcas, "system.pwd"); 209 capgrploc = cap_service_open(capcas, "system.grp"); 210 /* Casper capability no longer needed. */ 211 cap_close(capcas); 212 if (cappwdloc == NULL || capgrploc == NULL) { 213 if (cappwdloc == NULL) 214 warn("unable to open system.pwd service"); 215 if (capgrploc == NULL) 216 warn("unable to open system.grp service"); 217 exit(1); 218 } 219 /* Limit system.pwd to only getpwuid() function and pw_name field. */ 220 cmds[0] = "getpwuid"; 221 if (cap_pwd_limit_cmds(cappwdloc, cmds, 1) < 0) 222 err(1, "unable to limit system.pwd service"); 223 fields[0] = "pw_name"; 224 if (cap_pwd_limit_fields(cappwdloc, fields, 1) < 0) 225 err(1, "unable to limit system.pwd service"); 226 /* Limit system.grp to only getgrgid() function and gr_name field. */ 227 cmds[0] = "getgrgid"; 228 if (cap_grp_limit_cmds(capgrploc, cmds, 1) < 0) 229 err(1, "unable to limit system.grp service"); 230 fields[0] = "gr_name"; 231 if (cap_grp_limit_fields(capgrploc, fields, 1) < 0) 232 err(1, "unable to limit system.grp service"); 233 234 *cappwdp = cappwdloc; 235 *capgrpp = capgrploc; 236 return (0); 237 } 238 #endif /* HAVE_LIBCASPER */ 239 240 static void 241 print_integer_arg(const char *(*decoder)(int), int value) 242 { 243 const char *str; 244 245 str = decoder(value); 246 if (str != NULL) 247 printf("%s", str); 248 else { 249 if (decimal) 250 printf("<invalid=%d>", value); 251 else 252 printf("<invalid=%#x>", value); 253 } 254 } 255 256 /* Like print_integer_arg but unknown values are treated as valid. */ 257 static void 258 print_integer_arg_valid(const char *(*decoder)(int), int value) 259 { 260 const char *str; 261 262 str = decoder(value); 263 if (str != NULL) 264 printf("%s", str); 265 else { 266 if (decimal) 267 printf("%d", value); 268 else 269 printf("%#x", value); 270 } 271 } 272 273 static void 274 print_mask_arg(bool (*decoder)(FILE *, int, int *), int value) 275 { 276 bool invalid; 277 int rem; 278 279 printf("%#x<", value); 280 invalid = !decoder(stdout, value, &rem); 281 printf(">"); 282 if (invalid) 283 printf("<invalid>%u", rem); 284 } 285 286 static void 287 print_mask_arg0(bool (*decoder)(FILE *, int, int *), int value) 288 { 289 bool invalid; 290 int rem; 291 292 if (value == 0) { 293 printf("0"); 294 return; 295 } 296 printf("%#x<", value); 297 invalid = !decoder(stdout, value, &rem); 298 printf(">"); 299 if (invalid) 300 printf("<invalid>%u", rem); 301 } 302 303 static void 304 decode_fileflags(fflags_t value) 305 { 306 bool invalid; 307 fflags_t rem; 308 309 if (value == 0) { 310 printf("0"); 311 return; 312 } 313 printf("%#x<", value); 314 invalid = !sysdecode_fileflags(stdout, value, &rem); 315 printf(">"); 316 if (invalid) 317 printf("<invalid>%u", rem); 318 } 319 320 static void 321 decode_filemode(int value) 322 { 323 bool invalid; 324 int rem; 325 326 if (value == 0) { 327 printf("0"); 328 return; 329 } 330 printf("%#o<", value); 331 invalid = !sysdecode_filemode(stdout, value, &rem); 332 printf(">"); 333 if (invalid) 334 printf("<invalid>%u", rem); 335 } 336 337 static void 338 print_mask_arg32(bool (*decoder)(FILE *, uint32_t, uint32_t *), uint32_t value) 339 { 340 bool invalid; 341 uint32_t rem; 342 343 printf("%#x<", value); 344 invalid = !decoder(stdout, value, &rem); 345 printf(">"); 346 if (invalid) 347 printf("<invalid>%u", rem); 348 } 349 350 static void 351 print_mask_argul(bool (*decoder)(FILE *, u_long, u_long *), u_long value) 352 { 353 bool invalid; 354 u_long rem; 355 356 if (value == 0) { 357 printf("0"); 358 return; 359 } 360 printf("%#lx<", value); 361 invalid = !decoder(stdout, value, &rem); 362 printf(">"); 363 if (invalid) 364 printf("<invalid>%lu", rem); 365 } 366 367 int 368 main(int argc, char *argv[]) 369 { 370 int ch, ktrlen, size; 371 void *m; 372 int trpoints = ALL_POINTS; 373 int drop_logged; 374 pid_t pid = 0; 375 u_int sv_flags; 376 377 setlocale(LC_CTYPE, ""); 378 379 timestamp = TIMESTAMP_NONE; 380 381 while ((ch = getopt(argc,argv,"f:dElm:np:AHRrSsTt:")) != -1) 382 switch (ch) { 383 case 'A': 384 abiflag = 1; 385 break; 386 case 'f': 387 tracefile = optarg; 388 break; 389 case 'd': 390 decimal = 1; 391 break; 392 case 'l': 393 tail = 1; 394 break; 395 case 'm': 396 maxdata = atoi(optarg); 397 break; 398 case 'n': 399 fancy = 0; 400 break; 401 case 'p': 402 pid = atoi(optarg); 403 break; 404 case 'r': 405 resolv = 1; 406 break; 407 case 'S': 408 syscallno = 1; 409 break; 410 case 's': 411 suppressdata = 1; 412 break; 413 case 'E': 414 timestamp |= TIMESTAMP_ELAPSED; 415 break; 416 case 'H': 417 threads = 1; 418 break; 419 case 'R': 420 timestamp |= TIMESTAMP_RELATIVE; 421 break; 422 case 'T': 423 timestamp |= TIMESTAMP_ABSOLUTE; 424 break; 425 case 't': 426 trpoints = getpoints(optarg); 427 if (trpoints < 0) 428 errx(1, "unknown trace point in %s", optarg); 429 break; 430 default: 431 usage(); 432 } 433 434 if (argc > optind) 435 usage(); 436 437 m = malloc(size = 1025); 438 if (m == NULL) 439 errx(1, "%s", strerror(ENOMEM)); 440 if (strcmp(tracefile, "-") != 0) 441 if (!freopen(tracefile, "r", stdin)) 442 err(1, "%s", tracefile); 443 444 strerror_init(); 445 localtime_init(); 446 #ifdef HAVE_LIBCASPER 447 if (resolv != 0) { 448 if (cappwdgrp_setup(&cappwd, &capgrp) < 0) { 449 cappwd = NULL; 450 capgrp = NULL; 451 } 452 } 453 if (resolv == 0 || (cappwd != NULL && capgrp != NULL)) { 454 if (cap_enter() < 0 && errno != ENOSYS) 455 err(1, "unable to enter capability mode"); 456 } 457 #else 458 if (resolv == 0) { 459 if (cap_enter() < 0 && errno != ENOSYS) 460 err(1, "unable to enter capability mode"); 461 } 462 #endif 463 if (caph_limit_stdio() == -1) 464 err(1, "unable to limit stdio"); 465 466 TAILQ_INIT(&trace_procs); 467 drop_logged = 0; 468 while (fread_tail(&ktr_header, sizeof(struct ktr_header), 1)) { 469 if (ktr_header.ktr_type & KTR_DROP) { 470 ktr_header.ktr_type &= ~KTR_DROP; 471 if (!drop_logged && threads) { 472 printf( 473 "%6jd %6jd %-8.*s Events dropped.\n", 474 (intmax_t)ktr_header.ktr_pid, 475 ktr_header.ktr_tid > 0 ? 476 (intmax_t)ktr_header.ktr_tid : 0, 477 MAXCOMLEN, ktr_header.ktr_comm); 478 drop_logged = 1; 479 } else if (!drop_logged) { 480 printf("%6jd %-8.*s Events dropped.\n", 481 (intmax_t)ktr_header.ktr_pid, MAXCOMLEN, 482 ktr_header.ktr_comm); 483 drop_logged = 1; 484 } 485 } 486 if (trpoints & (1<<ktr_header.ktr_type)) 487 if (pid == 0 || ktr_header.ktr_pid == pid || 488 ktr_header.ktr_tid == pid) 489 dumpheader(&ktr_header); 490 if ((ktrlen = ktr_header.ktr_len) < 0) 491 errx(1, "bogus length 0x%x", ktrlen); 492 if (ktrlen > size) { 493 m = realloc(m, ktrlen+1); 494 if (m == NULL) 495 errx(1, "%s", strerror(ENOMEM)); 496 size = ktrlen; 497 } 498 if (ktrlen && fread_tail(m, ktrlen, 1) == 0) 499 errx(1, "data too short"); 500 if (fetchprocinfo(&ktr_header, (u_int *)m) != 0) 501 continue; 502 sv_flags = abidump(&ktr_header); 503 if (pid && ktr_header.ktr_pid != pid && 504 ktr_header.ktr_tid != pid) 505 continue; 506 if ((trpoints & (1<<ktr_header.ktr_type)) == 0) 507 continue; 508 drop_logged = 0; 509 switch (ktr_header.ktr_type) { 510 case KTR_SYSCALL: 511 ktrsyscall((struct ktr_syscall *)m, sv_flags); 512 break; 513 case KTR_SYSRET: 514 ktrsysret((struct ktr_sysret *)m, sv_flags); 515 break; 516 case KTR_NAMEI: 517 case KTR_SYSCTL: 518 ktrnamei(m, ktrlen); 519 break; 520 case KTR_GENIO: 521 ktrgenio((struct ktr_genio *)m, ktrlen); 522 break; 523 case KTR_PSIG: 524 ktrpsig((struct ktr_psig *)m); 525 break; 526 case KTR_CSW: 527 if (ktrlen == sizeof(struct ktr_csw_old)) 528 ktrcsw_old((struct ktr_csw_old *)m); 529 else 530 ktrcsw((struct ktr_csw *)m); 531 break; 532 case KTR_USER: 533 ktruser(ktrlen, m); 534 break; 535 case KTR_STRUCT: 536 ktrstruct(m, ktrlen); 537 break; 538 case KTR_CAPFAIL: 539 ktrcapfail((struct ktr_cap_fail *)m); 540 break; 541 case KTR_FAULT: 542 ktrfault((struct ktr_fault *)m); 543 break; 544 case KTR_FAULTEND: 545 ktrfaultend((struct ktr_faultend *)m); 546 break; 547 default: 548 printf("\n"); 549 break; 550 } 551 if (tail) 552 fflush(stdout); 553 } 554 return 0; 555 } 556 557 int 558 fread_tail(void *buf, int size, int num) 559 { 560 int i; 561 562 while ((i = fread(buf, size, num, stdin)) == 0 && tail) { 563 sleep(1); 564 clearerr(stdin); 565 } 566 return (i); 567 } 568 569 int 570 fetchprocinfo(struct ktr_header *kth, u_int *flags) 571 { 572 struct proc_info *pi; 573 574 switch (kth->ktr_type) { 575 case KTR_PROCCTOR: 576 TAILQ_FOREACH(pi, &trace_procs, info) { 577 if (pi->pid == kth->ktr_pid) { 578 TAILQ_REMOVE(&trace_procs, pi, info); 579 break; 580 } 581 } 582 pi = malloc(sizeof(struct proc_info)); 583 if (pi == NULL) 584 errx(1, "%s", strerror(ENOMEM)); 585 pi->sv_flags = *flags; 586 pi->pid = kth->ktr_pid; 587 TAILQ_INSERT_TAIL(&trace_procs, pi, info); 588 return (1); 589 590 case KTR_PROCDTOR: 591 TAILQ_FOREACH(pi, &trace_procs, info) { 592 if (pi->pid == kth->ktr_pid) { 593 TAILQ_REMOVE(&trace_procs, pi, info); 594 free(pi); 595 break; 596 } 597 } 598 return (1); 599 } 600 601 return (0); 602 } 603 604 u_int 605 abidump(struct ktr_header *kth) 606 { 607 struct proc_info *pi; 608 const char *abi; 609 const char *arch; 610 u_int flags = 0; 611 612 TAILQ_FOREACH(pi, &trace_procs, info) { 613 if (pi->pid == kth->ktr_pid) { 614 flags = pi->sv_flags; 615 break; 616 } 617 } 618 619 if (abiflag == 0) 620 return (flags); 621 622 switch (flags & SV_ABI_MASK) { 623 case SV_ABI_LINUX: 624 abi = "L"; 625 break; 626 case SV_ABI_FREEBSD: 627 abi = "F"; 628 break; 629 case SV_ABI_CLOUDABI: 630 abi = "C"; 631 break; 632 default: 633 abi = "U"; 634 break; 635 } 636 637 if (flags & SV_LP64) 638 arch = "64"; 639 else if (flags & SV_ILP32) 640 arch = "32"; 641 else 642 arch = "00"; 643 644 printf("%s%s ", abi, arch); 645 646 return (flags); 647 } 648 649 void 650 dumpheader(struct ktr_header *kth) 651 { 652 static char unknown[64]; 653 static struct timeval prevtime, prevtime_e; 654 struct timeval temp; 655 const char *type; 656 const char *sign; 657 658 switch (kth->ktr_type) { 659 case KTR_SYSCALL: 660 type = "CALL"; 661 break; 662 case KTR_SYSRET: 663 type = "RET "; 664 break; 665 case KTR_NAMEI: 666 type = "NAMI"; 667 break; 668 case KTR_GENIO: 669 type = "GIO "; 670 break; 671 case KTR_PSIG: 672 type = "PSIG"; 673 break; 674 case KTR_CSW: 675 type = "CSW "; 676 break; 677 case KTR_USER: 678 type = "USER"; 679 break; 680 case KTR_STRUCT: 681 type = "STRU"; 682 break; 683 case KTR_SYSCTL: 684 type = "SCTL"; 685 break; 686 case KTR_PROCCTOR: 687 /* FALLTHROUGH */ 688 case KTR_PROCDTOR: 689 return; 690 case KTR_CAPFAIL: 691 type = "CAP "; 692 break; 693 case KTR_FAULT: 694 type = "PFLT"; 695 break; 696 case KTR_FAULTEND: 697 type = "PRET"; 698 break; 699 default: 700 sprintf(unknown, "UNKNOWN(%d)", kth->ktr_type); 701 type = unknown; 702 } 703 704 /* 705 * The ktr_tid field was previously the ktr_buffer field, which held 706 * the kernel pointer value for the buffer associated with data 707 * following the record header. It now holds a threadid, but only 708 * for trace files after the change. Older trace files still contain 709 * kernel pointers. Detect this and suppress the results by printing 710 * negative tid's as 0. 711 */ 712 if (threads) 713 printf("%6jd %6jd %-8.*s ", (intmax_t)kth->ktr_pid, 714 kth->ktr_tid > 0 ? (intmax_t)kth->ktr_tid : 0, 715 MAXCOMLEN, kth->ktr_comm); 716 else 717 printf("%6jd %-8.*s ", (intmax_t)kth->ktr_pid, MAXCOMLEN, 718 kth->ktr_comm); 719 if (timestamp) { 720 if (timestamp & TIMESTAMP_ABSOLUTE) { 721 printf("%jd.%06ld ", (intmax_t)kth->ktr_time.tv_sec, 722 kth->ktr_time.tv_usec); 723 } 724 if (timestamp & TIMESTAMP_ELAPSED) { 725 if (prevtime_e.tv_sec == 0) 726 prevtime_e = kth->ktr_time; 727 timersub(&kth->ktr_time, &prevtime_e, &temp); 728 printf("%jd.%06ld ", (intmax_t)temp.tv_sec, 729 temp.tv_usec); 730 } 731 if (timestamp & TIMESTAMP_RELATIVE) { 732 if (prevtime.tv_sec == 0) 733 prevtime = kth->ktr_time; 734 if (timercmp(&kth->ktr_time, &prevtime, <)) { 735 timersub(&prevtime, &kth->ktr_time, &temp); 736 sign = "-"; 737 } else { 738 timersub(&kth->ktr_time, &prevtime, &temp); 739 sign = ""; 740 } 741 prevtime = kth->ktr_time; 742 printf("%s%jd.%06ld ", sign, (intmax_t)temp.tv_sec, 743 temp.tv_usec); 744 } 745 } 746 printf("%s ", type); 747 } 748 749 #include <sys/syscall.h> 750 751 static void 752 ioctlname(unsigned long val) 753 { 754 const char *str; 755 756 str = sysdecode_ioctlname(val); 757 if (str != NULL) 758 printf("%s", str); 759 else if (decimal) 760 printf("%lu", val); 761 else 762 printf("%#lx", val); 763 } 764 765 static enum sysdecode_abi 766 syscallabi(u_int sv_flags) 767 { 768 769 if (sv_flags == 0) 770 return (SYSDECODE_ABI_FREEBSD); 771 switch (sv_flags & SV_ABI_MASK) { 772 case SV_ABI_FREEBSD: 773 return (SYSDECODE_ABI_FREEBSD); 774 #if defined(__amd64__) || defined(__i386__) 775 case SV_ABI_LINUX: 776 #ifdef __amd64__ 777 if (sv_flags & SV_ILP32) 778 return (SYSDECODE_ABI_LINUX32); 779 #endif 780 return (SYSDECODE_ABI_LINUX); 781 #endif 782 #if defined(__aarch64__) || defined(__amd64__) 783 case SV_ABI_CLOUDABI: 784 return (SYSDECODE_ABI_CLOUDABI64); 785 #endif 786 default: 787 return (SYSDECODE_ABI_UNKNOWN); 788 } 789 } 790 791 static void 792 syscallname(u_int code, u_int sv_flags) 793 { 794 const char *name; 795 796 name = sysdecode_syscallname(syscallabi(sv_flags), code); 797 if (name == NULL) 798 printf("[%d]", code); 799 else { 800 printf("%s", name); 801 if (syscallno) 802 printf("[%d]", code); 803 } 804 } 805 806 static void 807 print_signal(int signo) 808 { 809 const char *signame; 810 811 signame = sysdecode_signal(signo); 812 if (signame != NULL) 813 printf("%s", signame); 814 else 815 printf("SIG %d", signo); 816 } 817 818 void 819 ktrsyscall(struct ktr_syscall *ktr, u_int sv_flags) 820 { 821 int narg = ktr->ktr_narg; 822 register_t *ip, *first; 823 intmax_t arg; 824 int quad_align, quad_slots; 825 826 syscallname(ktr->ktr_code, sv_flags); 827 ip = first = &ktr->ktr_args[0]; 828 if (narg) { 829 char c = '('; 830 if (fancy && 831 (sv_flags == 0 || 832 (sv_flags & SV_ABI_MASK) == SV_ABI_FREEBSD)) { 833 quad_align = 0; 834 if (sv_flags & SV_ILP32) { 835 #ifdef __powerpc__ 836 quad_align = 1; 837 #endif 838 quad_slots = 2; 839 } else 840 quad_slots = 1; 841 switch (ktr->ktr_code) { 842 case SYS_bindat: 843 case SYS_connectat: 844 case SYS_faccessat: 845 case SYS_fchmodat: 846 case SYS_fchownat: 847 case SYS_fstatat: 848 case SYS_futimesat: 849 case SYS_linkat: 850 case SYS_mkdirat: 851 case SYS_mkfifoat: 852 case SYS_mknodat: 853 case SYS_openat: 854 case SYS_readlinkat: 855 case SYS_renameat: 856 case SYS_unlinkat: 857 case SYS_utimensat: 858 putchar('('); 859 print_integer_arg_valid(sysdecode_atfd, *ip); 860 c = ','; 861 ip++; 862 narg--; 863 break; 864 } 865 switch (ktr->ktr_code) { 866 case SYS_ioctl: { 867 print_number(ip, narg, c); 868 putchar(c); 869 ioctlname(*ip); 870 c = ','; 871 ip++; 872 narg--; 873 break; 874 } 875 case SYS_ptrace: 876 putchar('('); 877 print_integer_arg(sysdecode_ptrace_request, *ip); 878 c = ','; 879 ip++; 880 narg--; 881 break; 882 case SYS_access: 883 case SYS_eaccess: 884 case SYS_faccessat: 885 print_number(ip, narg, c); 886 putchar(','); 887 print_mask_arg(sysdecode_access_mode, *ip); 888 ip++; 889 narg--; 890 break; 891 case SYS_open: 892 case SYS_openat: 893 print_number(ip, narg, c); 894 putchar(','); 895 print_mask_arg(sysdecode_open_flags, ip[0]); 896 if ((ip[0] & O_CREAT) == O_CREAT) { 897 putchar(','); 898 decode_filemode(ip[1]); 899 } 900 ip += 2; 901 narg -= 2; 902 break; 903 case SYS_wait4: 904 print_number(ip, narg, c); 905 print_number(ip, narg, c); 906 putchar(','); 907 print_mask_arg0(sysdecode_wait4_options, *ip); 908 ip++; 909 narg--; 910 break; 911 case SYS_wait6: 912 putchar('('); 913 print_integer_arg(sysdecode_idtype, *ip); 914 c = ','; 915 ip++; 916 narg--; 917 print_number64(first, ip, narg, c); 918 print_number(ip, narg, c); 919 putchar(','); 920 print_mask_arg(sysdecode_wait6_options, *ip); 921 ip++; 922 narg--; 923 break; 924 case SYS_chmod: 925 case SYS_fchmod: 926 case SYS_lchmod: 927 case SYS_fchmodat: 928 print_number(ip, narg, c); 929 putchar(','); 930 decode_filemode(*ip); 931 ip++; 932 narg--; 933 break; 934 case SYS_mknod: 935 case SYS_mknodat: 936 print_number(ip, narg, c); 937 putchar(','); 938 decode_filemode(*ip); 939 ip++; 940 narg--; 941 break; 942 case SYS_getfsstat: 943 print_number(ip, narg, c); 944 print_number(ip, narg, c); 945 putchar(','); 946 print_integer_arg(sysdecode_getfsstat_mode, *ip); 947 ip++; 948 narg--; 949 break; 950 case SYS_mount: 951 print_number(ip, narg, c); 952 print_number(ip, narg, c); 953 putchar(','); 954 print_mask_arg(sysdecode_mount_flags, *ip); 955 ip++; 956 narg--; 957 break; 958 case SYS_unmount: 959 print_number(ip, narg, c); 960 putchar(','); 961 print_mask_arg(sysdecode_mount_flags, *ip); 962 ip++; 963 narg--; 964 break; 965 case SYS_recvmsg: 966 case SYS_sendmsg: 967 print_number(ip, narg, c); 968 print_number(ip, narg, c); 969 putchar(','); 970 print_mask_arg0(sysdecode_msg_flags, *ip); 971 ip++; 972 narg--; 973 break; 974 case SYS_recvfrom: 975 case SYS_sendto: 976 print_number(ip, narg, c); 977 print_number(ip, narg, c); 978 print_number(ip, narg, c); 979 putchar(','); 980 print_mask_arg0(sysdecode_msg_flags, *ip); 981 ip++; 982 narg--; 983 break; 984 case SYS_chflags: 985 case SYS_fchflags: 986 case SYS_lchflags: 987 print_number(ip, narg, c); 988 putchar(','); 989 decode_fileflags(*ip); 990 ip++; 991 narg--; 992 break; 993 case SYS_kill: 994 print_number(ip, narg, c); 995 putchar(','); 996 print_signal(*ip); 997 ip++; 998 narg--; 999 break; 1000 case SYS_reboot: 1001 putchar('('); 1002 print_mask_arg(sysdecode_reboot_howto, *ip); 1003 ip++; 1004 narg--; 1005 break; 1006 case SYS_umask: 1007 putchar('('); 1008 decode_filemode(*ip); 1009 ip++; 1010 narg--; 1011 break; 1012 case SYS_msync: 1013 print_number(ip, narg, c); 1014 print_number(ip, narg, c); 1015 putchar(','); 1016 print_mask_arg(sysdecode_msync_flags, *ip); 1017 ip++; 1018 narg--; 1019 break; 1020 #ifdef SYS_freebsd6_mmap 1021 case SYS_freebsd6_mmap: 1022 print_number(ip, narg, c); 1023 print_number(ip, narg, c); 1024 putchar(','); 1025 print_mask_arg(sysdecode_mmap_prot, *ip); 1026 putchar(','); 1027 ip++; 1028 narg--; 1029 print_mask_arg(sysdecode_mmap_flags, *ip); 1030 ip++; 1031 narg--; 1032 break; 1033 #endif 1034 case SYS_mmap: 1035 print_number(ip, narg, c); 1036 print_number(ip, narg, c); 1037 putchar(','); 1038 print_mask_arg(sysdecode_mmap_prot, *ip); 1039 putchar(','); 1040 ip++; 1041 narg--; 1042 print_mask_arg(sysdecode_mmap_flags, *ip); 1043 ip++; 1044 narg--; 1045 break; 1046 case SYS_mprotect: 1047 print_number(ip, narg, c); 1048 print_number(ip, narg, c); 1049 putchar(','); 1050 print_mask_arg(sysdecode_mmap_prot, *ip); 1051 ip++; 1052 narg--; 1053 break; 1054 case SYS_madvise: 1055 print_number(ip, narg, c); 1056 print_number(ip, narg, c); 1057 putchar(','); 1058 print_integer_arg(sysdecode_madvice, *ip); 1059 ip++; 1060 narg--; 1061 break; 1062 case SYS_setpriority: 1063 print_number(ip, narg, c); 1064 print_number(ip, narg, c); 1065 putchar(','); 1066 print_integer_arg(sysdecode_prio_which, *ip); 1067 ip++; 1068 narg--; 1069 break; 1070 case SYS_fcntl: 1071 print_number(ip, narg, c); 1072 putchar(','); 1073 print_integer_arg(sysdecode_fcntl_cmd, ip[0]); 1074 if (sysdecode_fcntl_arg_p(ip[0])) { 1075 putchar(','); 1076 if (ip[0] == F_SETFL) 1077 print_mask_arg( 1078 sysdecode_fcntl_fileflags, 1079 ip[1]); 1080 else 1081 sysdecode_fcntl_arg(stdout, 1082 ip[0], ip[1], 1083 decimal ? 10 : 16); 1084 } 1085 ip += 2; 1086 narg -= 2; 1087 break; 1088 case SYS_socket: { 1089 int sockdomain; 1090 putchar('('); 1091 sockdomain = *ip; 1092 print_integer_arg(sysdecode_socketdomain, 1093 sockdomain); 1094 ip++; 1095 narg--; 1096 putchar(','); 1097 print_mask_arg(sysdecode_socket_type, *ip); 1098 ip++; 1099 narg--; 1100 if (sockdomain == PF_INET || 1101 sockdomain == PF_INET6) { 1102 putchar(','); 1103 print_integer_arg(sysdecode_ipproto, 1104 *ip); 1105 ip++; 1106 narg--; 1107 } 1108 c = ','; 1109 break; 1110 } 1111 case SYS_setsockopt: 1112 case SYS_getsockopt: { 1113 const char *str; 1114 1115 print_number(ip, narg, c); 1116 putchar(','); 1117 print_integer_arg_valid(sysdecode_sockopt_level, 1118 *ip); 1119 str = sysdecode_sockopt_name(ip[0], ip[1]); 1120 if (str != NULL) { 1121 printf(",%s", str); 1122 ip++; 1123 narg--; 1124 } 1125 ip++; 1126 narg--; 1127 break; 1128 } 1129 #ifdef SYS_freebsd6_lseek 1130 case SYS_freebsd6_lseek: 1131 print_number(ip, narg, c); 1132 /* Hidden 'pad' argument, not in lseek(2) */ 1133 print_number(ip, narg, c); 1134 print_number64(first, ip, narg, c); 1135 putchar(','); 1136 print_integer_arg(sysdecode_whence, *ip); 1137 ip++; 1138 narg--; 1139 break; 1140 #endif 1141 case SYS_lseek: 1142 print_number(ip, narg, c); 1143 print_number64(first, ip, narg, c); 1144 putchar(','); 1145 print_integer_arg(sysdecode_whence, *ip); 1146 ip++; 1147 narg--; 1148 break; 1149 case SYS_flock: 1150 print_number(ip, narg, c); 1151 putchar(','); 1152 print_mask_arg(sysdecode_flock_operation, *ip); 1153 ip++; 1154 narg--; 1155 break; 1156 case SYS_mkfifo: 1157 case SYS_mkfifoat: 1158 case SYS_mkdir: 1159 case SYS_mkdirat: 1160 print_number(ip, narg, c); 1161 putchar(','); 1162 decode_filemode(*ip); 1163 ip++; 1164 narg--; 1165 break; 1166 case SYS_shutdown: 1167 print_number(ip, narg, c); 1168 putchar(','); 1169 print_integer_arg(sysdecode_shutdown_how, *ip); 1170 ip++; 1171 narg--; 1172 break; 1173 case SYS_socketpair: 1174 putchar('('); 1175 print_integer_arg(sysdecode_socketdomain, *ip); 1176 ip++; 1177 narg--; 1178 putchar(','); 1179 print_mask_arg(sysdecode_socket_type, *ip); 1180 ip++; 1181 narg--; 1182 c = ','; 1183 break; 1184 case SYS_getrlimit: 1185 case SYS_setrlimit: 1186 putchar('('); 1187 print_integer_arg(sysdecode_rlimit, *ip); 1188 ip++; 1189 narg--; 1190 c = ','; 1191 break; 1192 case SYS_quotactl: 1193 print_number(ip, narg, c); 1194 putchar(','); 1195 if (!sysdecode_quotactl_cmd(stdout, *ip)) { 1196 if (decimal) 1197 printf("<invalid=%d>", (int)*ip); 1198 else 1199 printf("<invalid=%#x>", 1200 (int)*ip); 1201 } 1202 ip++; 1203 narg--; 1204 c = ','; 1205 break; 1206 case SYS_nfssvc: 1207 putchar('('); 1208 print_integer_arg(sysdecode_nfssvc_flags, *ip); 1209 ip++; 1210 narg--; 1211 c = ','; 1212 break; 1213 case SYS_rtprio: 1214 putchar('('); 1215 print_integer_arg(sysdecode_rtprio_function, 1216 *ip); 1217 ip++; 1218 narg--; 1219 c = ','; 1220 break; 1221 case SYS___semctl: 1222 print_number(ip, narg, c); 1223 print_number(ip, narg, c); 1224 putchar(','); 1225 print_integer_arg(sysdecode_semctl_cmd, *ip); 1226 ip++; 1227 narg--; 1228 break; 1229 case SYS_semget: 1230 print_number(ip, narg, c); 1231 print_number(ip, narg, c); 1232 putchar(','); 1233 print_mask_arg(sysdecode_semget_flags, *ip); 1234 ip++; 1235 narg--; 1236 break; 1237 case SYS_msgctl: 1238 print_number(ip, narg, c); 1239 putchar(','); 1240 print_integer_arg(sysdecode_msgctl_cmd, *ip); 1241 ip++; 1242 narg--; 1243 break; 1244 case SYS_shmat: 1245 print_number(ip, narg, c); 1246 print_number(ip, narg, c); 1247 putchar(','); 1248 print_mask_arg(sysdecode_shmat_flags, *ip); 1249 ip++; 1250 narg--; 1251 break; 1252 case SYS_shmctl: 1253 print_number(ip, narg, c); 1254 putchar(','); 1255 print_integer_arg(sysdecode_shmctl_cmd, *ip); 1256 ip++; 1257 narg--; 1258 break; 1259 case SYS_shm_open: 1260 print_number(ip, narg, c); 1261 putchar(','); 1262 print_mask_arg(sysdecode_open_flags, ip[0]); 1263 putchar(','); 1264 decode_filemode(ip[1]); 1265 ip += 2; 1266 narg -= 2; 1267 break; 1268 case SYS_minherit: 1269 print_number(ip, narg, c); 1270 print_number(ip, narg, c); 1271 putchar(','); 1272 print_integer_arg(sysdecode_minherit_inherit, 1273 *ip); 1274 ip++; 1275 narg--; 1276 break; 1277 case SYS_rfork: 1278 putchar('('); 1279 print_mask_arg(sysdecode_rfork_flags, *ip); 1280 ip++; 1281 narg--; 1282 c = ','; 1283 break; 1284 case SYS_lio_listio: 1285 putchar('('); 1286 print_integer_arg(sysdecode_lio_listio_mode, 1287 *ip); 1288 ip++; 1289 narg--; 1290 c = ','; 1291 break; 1292 case SYS_mlockall: 1293 putchar('('); 1294 print_mask_arg(sysdecode_mlockall_flags, *ip); 1295 ip++; 1296 narg--; 1297 break; 1298 case SYS_sched_setscheduler: 1299 print_number(ip, narg, c); 1300 putchar(','); 1301 print_integer_arg(sysdecode_scheduler_policy, 1302 *ip); 1303 ip++; 1304 narg--; 1305 break; 1306 case SYS_sched_get_priority_max: 1307 case SYS_sched_get_priority_min: 1308 putchar('('); 1309 print_integer_arg(sysdecode_scheduler_policy, 1310 *ip); 1311 ip++; 1312 narg--; 1313 break; 1314 case SYS_sendfile: 1315 print_number(ip, narg, c); 1316 print_number(ip, narg, c); 1317 print_number(ip, narg, c); 1318 print_number(ip, narg, c); 1319 print_number(ip, narg, c); 1320 print_number(ip, narg, c); 1321 putchar(','); 1322 print_mask_arg(sysdecode_sendfile_flags, *ip); 1323 ip++; 1324 narg--; 1325 break; 1326 case SYS_kldsym: 1327 print_number(ip, narg, c); 1328 putchar(','); 1329 print_integer_arg(sysdecode_kldsym_cmd, *ip); 1330 ip++; 1331 narg--; 1332 break; 1333 case SYS_sigprocmask: 1334 putchar('('); 1335 print_integer_arg(sysdecode_sigprocmask_how, 1336 *ip); 1337 ip++; 1338 narg--; 1339 c = ','; 1340 break; 1341 case SYS___acl_get_file: 1342 case SYS___acl_set_file: 1343 case SYS___acl_get_fd: 1344 case SYS___acl_set_fd: 1345 case SYS___acl_delete_file: 1346 case SYS___acl_delete_fd: 1347 case SYS___acl_aclcheck_file: 1348 case SYS___acl_aclcheck_fd: 1349 case SYS___acl_get_link: 1350 case SYS___acl_set_link: 1351 case SYS___acl_delete_link: 1352 case SYS___acl_aclcheck_link: 1353 print_number(ip, narg, c); 1354 putchar(','); 1355 print_integer_arg(sysdecode_acltype, *ip); 1356 ip++; 1357 narg--; 1358 break; 1359 case SYS_sigaction: 1360 putchar('('); 1361 print_signal(*ip); 1362 ip++; 1363 narg--; 1364 c = ','; 1365 break; 1366 case SYS_extattrctl: 1367 print_number(ip, narg, c); 1368 putchar(','); 1369 print_integer_arg(sysdecode_extattrnamespace, 1370 *ip); 1371 ip++; 1372 narg--; 1373 break; 1374 case SYS_nmount: 1375 print_number(ip, narg, c); 1376 print_number(ip, narg, c); 1377 putchar(','); 1378 print_mask_arg(sysdecode_mount_flags, *ip); 1379 ip++; 1380 narg--; 1381 break; 1382 case SYS_thr_create: 1383 print_number(ip, narg, c); 1384 print_number(ip, narg, c); 1385 putchar(','); 1386 print_mask_arg(sysdecode_thr_create_flags, *ip); 1387 ip++; 1388 narg--; 1389 break; 1390 case SYS_thr_kill: 1391 print_number(ip, narg, c); 1392 putchar(','); 1393 print_signal(*ip); 1394 ip++; 1395 narg--; 1396 break; 1397 case SYS_kldunloadf: 1398 print_number(ip, narg, c); 1399 putchar(','); 1400 print_integer_arg(sysdecode_kldunload_flags, 1401 *ip); 1402 ip++; 1403 narg--; 1404 break; 1405 case SYS_linkat: 1406 case SYS_renameat: 1407 case SYS_symlinkat: 1408 print_number(ip, narg, c); 1409 putchar(','); 1410 print_integer_arg_valid(sysdecode_atfd, *ip); 1411 ip++; 1412 narg--; 1413 break; 1414 case SYS_cap_fcntls_limit: 1415 print_number(ip, narg, c); 1416 putchar(','); 1417 arg = *ip; 1418 ip++; 1419 narg--; 1420 print_mask_arg32(sysdecode_cap_fcntlrights, arg); 1421 break; 1422 case SYS_posix_fadvise: 1423 print_number(ip, narg, c); 1424 print_number(ip, narg, c); 1425 print_number(ip, narg, c); 1426 (void)putchar(','); 1427 print_integer_arg(sysdecode_fadvice, *ip); 1428 ip++; 1429 narg--; 1430 break; 1431 case SYS_procctl: 1432 putchar('('); 1433 print_integer_arg(sysdecode_idtype, *ip); 1434 c = ','; 1435 ip++; 1436 narg--; 1437 print_number64(first, ip, narg, c); 1438 putchar(','); 1439 print_integer_arg(sysdecode_procctl_cmd, *ip); 1440 ip++; 1441 narg--; 1442 break; 1443 case SYS__umtx_op: 1444 print_number(ip, narg, c); 1445 putchar(','); 1446 print_integer_arg(sysdecode_umtx_op, *ip); 1447 switch (*ip) { 1448 case UMTX_OP_CV_WAIT: 1449 ip++; 1450 narg--; 1451 putchar(','); 1452 print_mask_argul( 1453 sysdecode_umtx_cvwait_flags, *ip); 1454 break; 1455 case UMTX_OP_RW_RDLOCK: 1456 ip++; 1457 narg--; 1458 putchar(','); 1459 print_mask_argul( 1460 sysdecode_umtx_rwlock_flags, *ip); 1461 break; 1462 } 1463 ip++; 1464 narg--; 1465 break; 1466 case SYS_ftruncate: 1467 case SYS_truncate: 1468 print_number(ip, narg, c); 1469 print_number64(first, ip, narg, c); 1470 break; 1471 } 1472 } 1473 while (narg > 0) { 1474 print_number(ip, narg, c); 1475 } 1476 putchar(')'); 1477 } 1478 putchar('\n'); 1479 } 1480 1481 void 1482 ktrsysret(struct ktr_sysret *ktr, u_int sv_flags) 1483 { 1484 register_t ret = ktr->ktr_retval; 1485 int error = ktr->ktr_error; 1486 1487 syscallname(ktr->ktr_code, sv_flags); 1488 printf(" "); 1489 1490 if (error == 0) { 1491 if (fancy) { 1492 printf("%ld", (long)ret); 1493 if (ret < 0 || ret > 9) 1494 printf("/%#lx", (unsigned long)ret); 1495 } else { 1496 if (decimal) 1497 printf("%ld", (long)ret); 1498 else 1499 printf("%#lx", (unsigned long)ret); 1500 } 1501 } else if (error == ERESTART) 1502 printf("RESTART"); 1503 else if (error == EJUSTRETURN) 1504 printf("JUSTRETURN"); 1505 else { 1506 printf("-1 errno %d", sysdecode_freebsd_to_abi_errno( 1507 syscallabi(sv_flags), error)); 1508 if (fancy) 1509 printf(" %s", strerror(ktr->ktr_error)); 1510 } 1511 putchar('\n'); 1512 } 1513 1514 void 1515 ktrnamei(char *cp, int len) 1516 { 1517 printf("\"%.*s\"\n", len, cp); 1518 } 1519 1520 void 1521 hexdump(char *p, int len, int screenwidth) 1522 { 1523 int n, i; 1524 int width; 1525 1526 width = 0; 1527 do { 1528 width += 2; 1529 i = 13; /* base offset */ 1530 i += (width / 2) + 1; /* spaces every second byte */ 1531 i += (width * 2); /* width of bytes */ 1532 i += 3; /* " |" */ 1533 i += width; /* each byte */ 1534 i += 1; /* "|" */ 1535 } while (i < screenwidth); 1536 width -= 2; 1537 1538 for (n = 0; n < len; n += width) { 1539 for (i = n; i < n + width; i++) { 1540 if ((i % width) == 0) { /* beginning of line */ 1541 printf(" 0x%04x", i); 1542 } 1543 if ((i % 2) == 0) { 1544 printf(" "); 1545 } 1546 if (i < len) 1547 printf("%02x", p[i] & 0xff); 1548 else 1549 printf(" "); 1550 } 1551 printf(" |"); 1552 for (i = n; i < n + width; i++) { 1553 if (i >= len) 1554 break; 1555 if (p[i] >= ' ' && p[i] <= '~') 1556 printf("%c", p[i]); 1557 else 1558 printf("."); 1559 } 1560 printf("|\n"); 1561 } 1562 if ((i % width) != 0) 1563 printf("\n"); 1564 } 1565 1566 void 1567 visdump(char *dp, int datalen, int screenwidth) 1568 { 1569 int col = 0; 1570 char *cp; 1571 int width; 1572 char visbuf[5]; 1573 1574 printf(" \""); 1575 col = 8; 1576 for (;datalen > 0; datalen--, dp++) { 1577 vis(visbuf, *dp, VIS_CSTYLE, *(dp+1)); 1578 cp = visbuf; 1579 /* 1580 * Keep track of printables and 1581 * space chars (like fold(1)). 1582 */ 1583 if (col == 0) { 1584 putchar('\t'); 1585 col = 8; 1586 } 1587 switch(*cp) { 1588 case '\n': 1589 col = 0; 1590 putchar('\n'); 1591 continue; 1592 case '\t': 1593 width = 8 - (col&07); 1594 break; 1595 default: 1596 width = strlen(cp); 1597 } 1598 if (col + width > (screenwidth-2)) { 1599 printf("\\\n\t"); 1600 col = 8; 1601 } 1602 col += width; 1603 do { 1604 putchar(*cp++); 1605 } while (*cp); 1606 } 1607 if (col == 0) 1608 printf(" "); 1609 printf("\"\n"); 1610 } 1611 1612 void 1613 ktrgenio(struct ktr_genio *ktr, int len) 1614 { 1615 int datalen = len - sizeof (struct ktr_genio); 1616 char *dp = (char *)ktr + sizeof (struct ktr_genio); 1617 static int screenwidth = 0; 1618 int i, binary; 1619 1620 printf("fd %d %s %d byte%s\n", ktr->ktr_fd, 1621 ktr->ktr_rw == UIO_READ ? "read" : "wrote", datalen, 1622 datalen == 1 ? "" : "s"); 1623 if (suppressdata) 1624 return; 1625 if (screenwidth == 0) { 1626 struct winsize ws; 1627 1628 if (fancy && ioctl(fileno(stderr), TIOCGWINSZ, &ws) != -1 && 1629 ws.ws_col > 8) 1630 screenwidth = ws.ws_col; 1631 else 1632 screenwidth = 80; 1633 } 1634 if (maxdata && datalen > maxdata) 1635 datalen = maxdata; 1636 1637 for (i = 0, binary = 0; i < datalen && binary == 0; i++) { 1638 if (dp[i] >= 32 && dp[i] < 127) 1639 continue; 1640 if (dp[i] == 10 || dp[i] == 13 || dp[i] == 0 || dp[i] == 9) 1641 continue; 1642 binary = 1; 1643 } 1644 if (binary) 1645 hexdump(dp, datalen, screenwidth); 1646 else 1647 visdump(dp, datalen, screenwidth); 1648 } 1649 1650 void 1651 ktrpsig(struct ktr_psig *psig) 1652 { 1653 const char *str; 1654 1655 print_signal(psig->signo); 1656 if (psig->action == SIG_DFL) { 1657 printf(" SIG_DFL"); 1658 } else { 1659 printf(" caught handler=0x%lx mask=0x%x", 1660 (u_long)psig->action, psig->mask.__bits[0]); 1661 } 1662 printf(" code="); 1663 str = sysdecode_sigcode(psig->signo, psig->code); 1664 if (str != NULL) 1665 printf("%s", str); 1666 else 1667 printf("<invalid=%#x>", psig->code); 1668 putchar('\n'); 1669 } 1670 1671 void 1672 ktrcsw_old(struct ktr_csw_old *cs) 1673 { 1674 printf("%s %s\n", cs->out ? "stop" : "resume", 1675 cs->user ? "user" : "kernel"); 1676 } 1677 1678 void 1679 ktrcsw(struct ktr_csw *cs) 1680 { 1681 printf("%s %s \"%s\"\n", cs->out ? "stop" : "resume", 1682 cs->user ? "user" : "kernel", cs->wmesg); 1683 } 1684 1685 void 1686 ktruser(int len, void *p) 1687 { 1688 unsigned char *cp; 1689 1690 if (sysdecode_utrace(stdout, p, len)) { 1691 printf("\n"); 1692 return; 1693 } 1694 1695 printf("%d ", len); 1696 cp = p; 1697 while (len--) 1698 if (decimal) 1699 printf(" %d", *cp++); 1700 else 1701 printf(" %02x", *cp++); 1702 printf("\n"); 1703 } 1704 1705 void 1706 ktrcaprights(cap_rights_t *rightsp) 1707 { 1708 1709 printf("cap_rights_t "); 1710 sysdecode_cap_rights(stdout, rightsp); 1711 printf("\n"); 1712 } 1713 1714 static void 1715 ktrtimeval(struct timeval *tv) 1716 { 1717 1718 printf("{%ld, %ld}", (long)tv->tv_sec, tv->tv_usec); 1719 } 1720 1721 void 1722 ktritimerval(struct itimerval *it) 1723 { 1724 1725 printf("itimerval { .interval = "); 1726 ktrtimeval(&it->it_interval); 1727 printf(", .value = "); 1728 ktrtimeval(&it->it_value); 1729 printf(" }\n"); 1730 } 1731 1732 void 1733 ktrsockaddr(struct sockaddr *sa) 1734 { 1735 /* 1736 TODO: Support additional address families 1737 #include <netnatm/natm.h> 1738 struct sockaddr_natm *natm; 1739 #include <netsmb/netbios.h> 1740 struct sockaddr_nb *nb; 1741 */ 1742 const char *str; 1743 char addr[64]; 1744 1745 /* 1746 * note: ktrstruct() has already verified that sa points to a 1747 * buffer at least sizeof(struct sockaddr) bytes long and exactly 1748 * sa->sa_len bytes long. 1749 */ 1750 printf("struct sockaddr { "); 1751 str = sysdecode_sockaddr_family(sa->sa_family); 1752 if (str != NULL) 1753 printf("%s", str); 1754 else 1755 printf("<invalid=%d>", sa->sa_family); 1756 printf(", "); 1757 1758 #define check_sockaddr_len(n) \ 1759 if (sa_##n.s##n##_len < sizeof(struct sockaddr_##n)) { \ 1760 printf("invalid"); \ 1761 break; \ 1762 } 1763 1764 switch(sa->sa_family) { 1765 case AF_INET: { 1766 struct sockaddr_in sa_in; 1767 1768 memset(&sa_in, 0, sizeof(sa_in)); 1769 memcpy(&sa_in, sa, sa->sa_len); 1770 check_sockaddr_len(in); 1771 inet_ntop(AF_INET, &sa_in.sin_addr, addr, sizeof addr); 1772 printf("%s:%u", addr, ntohs(sa_in.sin_port)); 1773 break; 1774 } 1775 case AF_INET6: { 1776 struct sockaddr_in6 sa_in6; 1777 1778 memset(&sa_in6, 0, sizeof(sa_in6)); 1779 memcpy(&sa_in6, sa, sa->sa_len); 1780 check_sockaddr_len(in6); 1781 getnameinfo((struct sockaddr *)&sa_in6, sizeof(sa_in6), 1782 addr, sizeof(addr), NULL, 0, NI_NUMERICHOST); 1783 printf("[%s]:%u", addr, htons(sa_in6.sin6_port)); 1784 break; 1785 } 1786 case AF_UNIX: { 1787 struct sockaddr_un sa_un; 1788 1789 memset(&sa_un, 0, sizeof(sa_un)); 1790 memcpy(&sa_un, sa, sa->sa_len); 1791 printf("%.*s", (int)sizeof(sa_un.sun_path), sa_un.sun_path); 1792 break; 1793 } 1794 default: 1795 printf("unknown address family"); 1796 } 1797 printf(" }\n"); 1798 } 1799 1800 void 1801 ktrstat(struct stat *statp) 1802 { 1803 char mode[12], timestr[PATH_MAX + 4]; 1804 struct passwd *pwd; 1805 struct group *grp; 1806 struct tm *tm; 1807 1808 /* 1809 * note: ktrstruct() has already verified that statp points to a 1810 * buffer exactly sizeof(struct stat) bytes long. 1811 */ 1812 printf("struct stat {"); 1813 printf("dev=%ju, ino=%ju, ", 1814 (uintmax_t)statp->st_dev, (uintmax_t)statp->st_ino); 1815 if (resolv == 0) 1816 printf("mode=0%jo, ", (uintmax_t)statp->st_mode); 1817 else { 1818 strmode(statp->st_mode, mode); 1819 printf("mode=%s, ", mode); 1820 } 1821 printf("nlink=%ju, ", (uintmax_t)statp->st_nlink); 1822 if (resolv == 0) { 1823 pwd = NULL; 1824 } else { 1825 #ifdef HAVE_LIBCASPER 1826 if (cappwd != NULL) 1827 pwd = cap_getpwuid(cappwd, statp->st_uid); 1828 else 1829 #endif 1830 pwd = getpwuid(statp->st_uid); 1831 } 1832 if (pwd == NULL) 1833 printf("uid=%ju, ", (uintmax_t)statp->st_uid); 1834 else 1835 printf("uid=\"%s\", ", pwd->pw_name); 1836 if (resolv == 0) { 1837 grp = NULL; 1838 } else { 1839 #ifdef HAVE_LIBCASPER 1840 if (capgrp != NULL) 1841 grp = cap_getgrgid(capgrp, statp->st_gid); 1842 else 1843 #endif 1844 grp = getgrgid(statp->st_gid); 1845 } 1846 if (grp == NULL) 1847 printf("gid=%ju, ", (uintmax_t)statp->st_gid); 1848 else 1849 printf("gid=\"%s\", ", grp->gr_name); 1850 printf("rdev=%ju, ", (uintmax_t)statp->st_rdev); 1851 printf("atime="); 1852 if (resolv == 0) 1853 printf("%jd", (intmax_t)statp->st_atim.tv_sec); 1854 else { 1855 tm = localtime(&statp->st_atim.tv_sec); 1856 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm); 1857 printf("\"%s\"", timestr); 1858 } 1859 if (statp->st_atim.tv_nsec != 0) 1860 printf(".%09ld, ", statp->st_atim.tv_nsec); 1861 else 1862 printf(", "); 1863 printf("mtime="); 1864 if (resolv == 0) 1865 printf("%jd", (intmax_t)statp->st_mtim.tv_sec); 1866 else { 1867 tm = localtime(&statp->st_mtim.tv_sec); 1868 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm); 1869 printf("\"%s\"", timestr); 1870 } 1871 if (statp->st_mtim.tv_nsec != 0) 1872 printf(".%09ld, ", statp->st_mtim.tv_nsec); 1873 else 1874 printf(", "); 1875 printf("ctime="); 1876 if (resolv == 0) 1877 printf("%jd", (intmax_t)statp->st_ctim.tv_sec); 1878 else { 1879 tm = localtime(&statp->st_ctim.tv_sec); 1880 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm); 1881 printf("\"%s\"", timestr); 1882 } 1883 if (statp->st_ctim.tv_nsec != 0) 1884 printf(".%09ld, ", statp->st_ctim.tv_nsec); 1885 else 1886 printf(", "); 1887 printf("birthtime="); 1888 if (resolv == 0) 1889 printf("%jd", (intmax_t)statp->st_birthtim.tv_sec); 1890 else { 1891 tm = localtime(&statp->st_birthtim.tv_sec); 1892 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm); 1893 printf("\"%s\"", timestr); 1894 } 1895 if (statp->st_birthtim.tv_nsec != 0) 1896 printf(".%09ld, ", statp->st_birthtim.tv_nsec); 1897 else 1898 printf(", "); 1899 printf("size=%jd, blksize=%ju, blocks=%jd, flags=0x%x", 1900 (uintmax_t)statp->st_size, (uintmax_t)statp->st_blksize, 1901 (intmax_t)statp->st_blocks, statp->st_flags); 1902 printf(" }\n"); 1903 } 1904 1905 void 1906 ktrstruct(char *buf, size_t buflen) 1907 { 1908 char *name, *data; 1909 size_t namelen, datalen; 1910 int i; 1911 cap_rights_t rights; 1912 struct itimerval it; 1913 struct stat sb; 1914 struct sockaddr_storage ss; 1915 1916 for (name = buf, namelen = 0; 1917 namelen < buflen && name[namelen] != '\0'; 1918 ++namelen) 1919 /* nothing */; 1920 if (namelen == buflen) 1921 goto invalid; 1922 if (name[namelen] != '\0') 1923 goto invalid; 1924 data = buf + namelen + 1; 1925 datalen = buflen - namelen - 1; 1926 if (datalen == 0) 1927 goto invalid; 1928 /* sanity check */ 1929 for (i = 0; i < (int)namelen; ++i) 1930 if (!isalpha(name[i])) 1931 goto invalid; 1932 if (strcmp(name, "caprights") == 0) { 1933 if (datalen != sizeof(cap_rights_t)) 1934 goto invalid; 1935 memcpy(&rights, data, datalen); 1936 ktrcaprights(&rights); 1937 } else if (strcmp(name, "itimerval") == 0) { 1938 if (datalen != sizeof(struct itimerval)) 1939 goto invalid; 1940 memcpy(&it, data, datalen); 1941 ktritimerval(&it); 1942 } else if (strcmp(name, "stat") == 0) { 1943 if (datalen != sizeof(struct stat)) 1944 goto invalid; 1945 memcpy(&sb, data, datalen); 1946 ktrstat(&sb); 1947 } else if (strcmp(name, "sockaddr") == 0) { 1948 if (datalen > sizeof(ss)) 1949 goto invalid; 1950 memcpy(&ss, data, datalen); 1951 if (datalen != ss.ss_len) 1952 goto invalid; 1953 ktrsockaddr((struct sockaddr *)&ss); 1954 } else { 1955 printf("unknown structure\n"); 1956 } 1957 return; 1958 invalid: 1959 printf("invalid record\n"); 1960 } 1961 1962 void 1963 ktrcapfail(struct ktr_cap_fail *ktr) 1964 { 1965 switch (ktr->cap_type) { 1966 case CAPFAIL_NOTCAPABLE: 1967 /* operation on fd with insufficient capabilities */ 1968 printf("operation requires "); 1969 sysdecode_cap_rights(stdout, &ktr->cap_needed); 1970 printf(", descriptor holds "); 1971 sysdecode_cap_rights(stdout, &ktr->cap_held); 1972 break; 1973 case CAPFAIL_INCREASE: 1974 /* requested more capabilities than fd already has */ 1975 printf("attempt to increase capabilities from "); 1976 sysdecode_cap_rights(stdout, &ktr->cap_held); 1977 printf(" to "); 1978 sysdecode_cap_rights(stdout, &ktr->cap_needed); 1979 break; 1980 case CAPFAIL_SYSCALL: 1981 /* called restricted syscall */ 1982 printf("disallowed system call"); 1983 break; 1984 case CAPFAIL_LOOKUP: 1985 /* used ".." in strict-relative mode */ 1986 printf("restricted VFS lookup"); 1987 break; 1988 default: 1989 printf("unknown capability failure: "); 1990 sysdecode_cap_rights(stdout, &ktr->cap_needed); 1991 printf(" "); 1992 sysdecode_cap_rights(stdout, &ktr->cap_held); 1993 break; 1994 } 1995 printf("\n"); 1996 } 1997 1998 void 1999 ktrfault(struct ktr_fault *ktr) 2000 { 2001 2002 printf("0x%jx ", (uintmax_t)ktr->vaddr); 2003 print_mask_arg(sysdecode_vmprot, ktr->type); 2004 printf("\n"); 2005 } 2006 2007 void 2008 ktrfaultend(struct ktr_faultend *ktr) 2009 { 2010 const char *str; 2011 2012 str = sysdecode_vmresult(ktr->result); 2013 if (str != NULL) 2014 printf("%s", str); 2015 else 2016 printf("<invalid=%d>", ktr->result); 2017 printf("\n"); 2018 } 2019 2020 void 2021 usage(void) 2022 { 2023 fprintf(stderr, "usage: kdump [-dEnlHRrSsTA] [-f trfile] " 2024 "[-m maxdata] [-p pid] [-t trstr]\n"); 2025 exit(1); 2026 } 2027