kdump.c revision 1.115
1 /* $NetBSD: kdump.c,v 1.115 2011/09/28 16:28:27 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 1988, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 __COPYRIGHT("@(#) Copyright (c) 1988, 1993\ 35 The Regents of the University of California. All rights reserved."); 36 #endif /* not lint */ 37 38 #ifndef lint 39 #if 0 40 static char sccsid[] = "@(#)kdump.c 8.4 (Berkeley) 4/28/95"; 41 #else 42 __RCSID("$NetBSD: kdump.c,v 1.115 2011/09/28 16:28:27 christos Exp $"); 43 #endif 44 #endif /* not lint */ 45 46 #include <sys/param.h> 47 #include <sys/proc.h> /* XXX #include <sys/file.h> fails without this header */ 48 #define _KERNEL 49 #include <sys/file.h> 50 #include <sys/errno.h> 51 #undef _KERNEL 52 #include <sys/time.h> 53 #include <sys/uio.h> 54 #include <sys/ktrace.h> 55 #include <sys/ioctl.h> 56 #include <sys/ptrace.h> 57 #include <sys/socket.h> 58 59 #include <ctype.h> 60 #include <err.h> 61 #include <signal.h> 62 #include <stddef.h> 63 #include <stdio.h> 64 #include <stdlib.h> 65 #include <string.h> 66 #include <unistd.h> 67 #include <vis.h> 68 #include <util.h> 69 70 #include "ktrace.h" 71 #include "setemul.h" 72 73 #include <sys/syscall.h> 74 75 static int timestamp, decimal, plain, tail, maxdata = -1, numeric; 76 static int word_size = 0; 77 static pid_t do_pid = -1; 78 static const char *tracefile = NULL; 79 static struct ktr_header ktr_header; 80 static int emul_changed = 0; 81 82 #define eqs(s1, s2) (strcmp((s1), (s2)) == 0) 83 #define small(v) (((long)(v) >= 0) && ((long)(v) < 10)) 84 85 static const char * const ptrace_ops[] = { 86 PT_STRINGS 87 }; 88 89 #ifdef PT_MACHDEP_STRINGS 90 static const char * const ptrace_machdep_ops[] = { PT_MACHDEP_STRINGS }; 91 #endif 92 93 static const char * const linux_ptrace_ops[] = { 94 "PTRACE_TRACEME", 95 "PTRACE_PEEKTEXT", "PTRACE_PEEKDATA", "PTRACE_PEEKUSER", 96 "PTRACE_POKETEXT", "PTRACE_POKEDATA", "PTRACE_POKEUSER", 97 "PTRACE_CONT", "PTRACE_KILL", "PTRACE_SINGLESTEP", 98 NULL, NULL, 99 "PTRACE_GETREGS", "PTRACE_SETREGS", "PTRACE_GETFPREGS", 100 "PTRACE_SETFPREGS", "PTRACE_ATTACH", "PTRACE_DETACH", 101 NULL, NULL, NULL, NULL, NULL, NULL, 102 "PTRACE_SYSCALL", 103 }; 104 105 int main(int, char **); 106 static int fread_tail(void *, size_t, size_t); 107 static int dumpheader(struct ktr_header *); 108 static void output_long(u_long, int); 109 static void ioctldecode(u_long); 110 static void ktrsyscall(struct ktr_syscall *); 111 static void ktrsysret(struct ktr_sysret *, int); 112 static void ktrnamei(char *, int); 113 static void ktremul(char *, int, int); 114 static void ktrgenio(struct ktr_genio *, int); 115 static void ktrpsig(void *, int); 116 static void ktrcsw(struct ktr_csw *); 117 static void ktruser(struct ktr_user *, int); 118 static void ktrmib(int *, int); 119 static void ktrexecfd(struct ktr_execfd *); 120 static void usage(void) __dead; 121 static void eprint(int); 122 static void rprint(register_t); 123 static const char *signame(long, int); 124 static void hexdump_buf(const void *, int, int); 125 static void visdump_buf(const void *, int, int); 126 127 int 128 main(int argc, char **argv) 129 { 130 int ch, ktrlen, size; 131 void *m; 132 int trpoints = 0; 133 int trset = 0; 134 const char *emul_name = "netbsd"; 135 int col; 136 char *cp; 137 138 setprogname(argv[0]); 139 140 if (strcmp(getprogname(), "ioctlname") == 0) { 141 int i; 142 143 while ((ch = getopt(argc, argv, "e:")) != -1) 144 switch (ch) { 145 case 'e': 146 emul_name = optarg; 147 break; 148 default: 149 usage(); 150 break; 151 } 152 setemul(emul_name, 0, 0); 153 argv += optind; 154 argc -= optind; 155 156 if (argc < 1) 157 usage(); 158 159 for (i = 0; i < argc; i++) { 160 ioctldecode(strtoul(argv[i], NULL, 0)); 161 (void)putchar('\n'); 162 } 163 return 0; 164 } 165 166 while ((ch = getopt(argc, argv, "e:f:dlm:Nnp:RTt:xX:")) != -1) { 167 switch (ch) { 168 case 'e': 169 emul_name = strdup(optarg); /* it's safer to copy it */ 170 break; 171 case 'f': 172 tracefile = optarg; 173 break; 174 case 'd': 175 decimal = 1; 176 break; 177 case 'l': 178 tail = 1; 179 break; 180 case 'p': 181 do_pid = strtoul(optarg, &cp, 0); 182 if (*cp != 0) 183 errx(1,"invalid number %s", optarg); 184 break; 185 case 'm': 186 maxdata = strtoul(optarg, &cp, 0); 187 if (*cp != 0) 188 errx(1,"invalid number %s", optarg); 189 break; 190 case 'N': 191 numeric++; 192 break; 193 case 'n': 194 plain++; 195 break; 196 case 'R': 197 timestamp = 2; /* relative timestamp */ 198 break; 199 case 'T': 200 timestamp = 1; 201 break; 202 case 't': 203 trset = 1; 204 trpoints = getpoints(trpoints, optarg); 205 if (trpoints < 0) 206 errx(1, "unknown trace point in %s", optarg); 207 break; 208 case 'x': 209 word_size = 1; 210 break; 211 case 'X': 212 word_size = strtoul(optarg, &cp, 0); 213 if (*cp != 0 || word_size & (word_size - 1) || 214 word_size > 16 || word_size <= 0) 215 errx(1, "argument to -X must be " 216 "1, 2, 4, 8 or 16"); 217 break; 218 default: 219 usage(); 220 } 221 } 222 argv += optind; 223 argc -= optind; 224 225 if (!trset) 226 trpoints = ALL_POINTS; 227 228 if (tracefile == NULL) { 229 if (argc == 1) { 230 tracefile = argv[0]; 231 argv++; 232 argc--; 233 } else 234 tracefile = DEF_TRACEFILE; 235 } 236 237 if (argc > 0) 238 usage(); 239 240 setemul(emul_name, 0, 0); 241 242 m = malloc(size = 1024); 243 if (m == NULL) 244 errx(1, "malloc: %s", strerror(ENOMEM)); 245 if (!freopen(tracefile, "r", stdin)) 246 err(1, "%s", tracefile); 247 while (fread_tail(&ktr_header, sizeof(struct ktr_header), 1)) { 248 if (trpoints & (1 << ktr_header.ktr_type) && 249 (do_pid == -1 || ktr_header.ktr_pid == do_pid)) 250 col = dumpheader(&ktr_header); 251 else 252 col = -1; 253 if ((ktrlen = ktr_header.ktr_len) < 0) 254 errx(1, "bogus length 0x%x", ktrlen); 255 if (ktrlen > size) { 256 while (ktrlen > size) 257 size *= 2; 258 m = realloc(m, size); 259 if (m == NULL) 260 errx(1, "realloc: %s", strerror(ENOMEM)); 261 } 262 if (ktrlen && fread_tail(m, ktrlen, 1) == 0) 263 errx(1, "data too short"); 264 if (col == -1) 265 continue; 266 267 /* update context to match currently processed record */ 268 ectx_sanify(ktr_header.ktr_pid); 269 270 switch (ktr_header.ktr_type) { 271 case KTR_SYSCALL: 272 ktrsyscall(m); 273 break; 274 case KTR_SYSRET: 275 ktrsysret(m, ktrlen); 276 break; 277 case KTR_NAMEI: 278 ktrnamei(m, ktrlen); 279 break; 280 case KTR_GENIO: 281 ktrgenio(m, ktrlen); 282 break; 283 case KTR_PSIG: 284 ktrpsig(m, ktrlen); 285 break; 286 case KTR_CSW: 287 ktrcsw(m); 288 break; 289 case KTR_EMUL: 290 ktremul(m, ktrlen, size); 291 break; 292 case KTR_USER: 293 ktruser(m, ktrlen); 294 break; 295 case KTR_EXEC_ARG: 296 case KTR_EXEC_ENV: 297 visdump_buf(m, ktrlen, col); 298 break; 299 case KTR_EXEC_FD: 300 ktrexecfd(m); 301 break; 302 case KTR_MIB: 303 ktrmib(m, ktrlen); 304 break; 305 default: 306 putchar('\n'); 307 hexdump_buf(m, ktrlen, word_size ? word_size : 1); 308 } 309 if (tail) 310 (void)fflush(stdout); 311 } 312 return (0); 313 } 314 315 static int 316 fread_tail(void *buf, size_t num, size_t size) 317 { 318 int i; 319 320 while ((i = fread(buf, size, num, stdin)) == 0 && tail) { 321 (void)sleep(1); 322 clearerr(stdin); 323 } 324 return (i); 325 } 326 327 static int 328 dumpheader(struct ktr_header *kth) 329 { 330 char unknown[64]; 331 const char *type; 332 union holdtime { 333 struct timeval tv; 334 struct timespec ts; 335 }; 336 static union holdtime prevtime; 337 union holdtime temp; 338 int col; 339 340 switch (kth->ktr_type) { 341 case KTR_SYSCALL: 342 type = "CALL"; 343 break; 344 case KTR_SYSRET: 345 type = "RET "; 346 break; 347 case KTR_NAMEI: 348 type = "NAMI"; 349 break; 350 case KTR_GENIO: 351 type = "GIO "; 352 break; 353 case KTR_PSIG: 354 type = "PSIG"; 355 break; 356 case KTR_CSW: 357 type = "CSW "; 358 break; 359 case KTR_EMUL: 360 type = "EMUL"; 361 break; 362 case KTR_USER: 363 type = "MISC"; 364 break; 365 case KTR_EXEC_ENV: 366 type = "ENV"; 367 break; 368 case KTR_EXEC_ARG: 369 type = "ARG"; 370 break; 371 case KTR_EXEC_FD: 372 type = "FD"; 373 break; 374 case KTR_SAUPCALL: 375 type = "SAU"; 376 break; 377 case KTR_MIB: 378 type = "MIB"; 379 break; 380 default: 381 (void)snprintf(unknown, sizeof(unknown), "UNKNOWN(%d)", 382 kth->ktr_type); 383 type = unknown; 384 } 385 386 col = printf("%6d ", kth->ktr_pid); 387 if (kth->ktr_version > KTRFACv0) 388 col += printf("%6d ", kth->ktr_lid); 389 col += printf("%-8.*s ", MAXCOMLEN, kth->ktr_comm); 390 if (timestamp) { 391 (void)&prevtime; 392 if (timestamp == 2) { 393 switch (kth->ktr_version) { 394 case KTRFAC_VERSION(KTRFACv0): 395 if (prevtime.tv.tv_sec == 0) 396 temp.tv.tv_sec = temp.tv.tv_usec = 0; 397 else 398 timersub(&kth->ktr_otv, 399 &prevtime.tv, &temp.tv); 400 prevtime.tv.tv_sec = kth->ktr_otv.tv_sec; 401 prevtime.tv.tv_usec = kth->ktr_otv.tv_usec; 402 break; 403 case KTRFAC_VERSION(KTRFACv1): 404 if (prevtime.ts.tv_sec == 0) 405 temp.ts.tv_sec = temp.ts.tv_nsec = 0; 406 else 407 timespecsub(&kth->ktr_ots, 408 &prevtime.ts, &temp.ts); 409 prevtime.ts.tv_sec = kth->ktr_ots.tv_sec; 410 prevtime.ts.tv_nsec = kth->ktr_ots.tv_nsec; 411 break; 412 case KTRFAC_VERSION(KTRFACv2): 413 if (prevtime.ts.tv_sec == 0) 414 temp.ts.tv_sec = temp.ts.tv_nsec = 0; 415 else 416 timespecsub(&kth->ktr_ts, 417 &prevtime.ts, &temp.ts); 418 prevtime.ts.tv_sec = kth->ktr_ts.tv_sec; 419 prevtime.ts.tv_nsec = kth->ktr_ts.tv_nsec; 420 break; 421 default: 422 goto badversion; 423 } 424 } else { 425 switch (kth->ktr_version) { 426 case KTRFAC_VERSION(KTRFACv0): 427 temp.tv.tv_sec = kth->ktr_otv.tv_sec; 428 temp.tv.tv_usec = kth->ktr_otv.tv_usec; 429 break; 430 case KTRFAC_VERSION(KTRFACv1): 431 temp.ts.tv_sec = kth->ktr_ots.tv_sec; 432 temp.ts.tv_nsec = kth->ktr_ots.tv_nsec; 433 break; 434 case KTRFAC_VERSION(KTRFACv2): 435 temp.ts.tv_sec = kth->ktr_ts.tv_sec; 436 temp.ts.tv_nsec = kth->ktr_ts.tv_nsec; 437 break; 438 default: 439 badversion: 440 err(1, "Unsupported ktrace version %x\n", 441 kth->ktr_version); 442 } 443 } 444 if (kth->ktr_version == KTRFACv0) 445 col += printf("%lld.%06ld ", 446 (long long)temp.tv.tv_sec, (long)temp.tv.tv_usec); 447 else 448 col += printf("%lld.%09ld ", 449 (long long)temp.ts.tv_sec, (long)temp.ts.tv_nsec); 450 } 451 col += printf("%-4s ", type); 452 return col; 453 } 454 455 static void 456 output_long(u_long it, int as_x) 457 { 458 if (cur_emul->flags & EMUL_FLAG_NETBSD32) 459 printf(as_x ? "%#x" : "%d", (u_int)it); 460 else 461 printf(as_x ? "%#lx" : "%ld", it); 462 } 463 464 static void 465 ioctldecode(u_long cmd) 466 { 467 char dirbuf[4], *dir = dirbuf; 468 int c; 469 470 if (cmd & IOC_IN) 471 *dir++ = 'W'; 472 if (cmd & IOC_OUT) 473 *dir++ = 'R'; 474 *dir = '\0'; 475 476 c = (cmd >> 8) & 0xff; 477 if (isprint(c)) 478 printf("_IO%s('%c',", dirbuf, c); 479 else 480 printf("_IO%s(0x%02x,", dirbuf, c); 481 output_long(cmd & 0xff, decimal == 0); 482 if ((cmd & IOC_VOID) == 0) { 483 putchar(','); 484 output_long(IOCPARM_LEN(cmd), decimal == 0); 485 } 486 putchar(')'); 487 } 488 489 static void 490 ktrsyscall(struct ktr_syscall *ktr) 491 { 492 int argcount; 493 const struct emulation *emul = cur_emul; 494 register_t *ap; 495 char c; 496 const char *cp; 497 const char *sys_name; 498 499 argcount = ktr->ktr_argsize / sizeof (*ap); 500 501 emul_changed = 0; 502 503 if (numeric || 504 ((ktr->ktr_code >= emul->nsysnames || ktr->ktr_code < 0))) { 505 sys_name = "?"; 506 (void)printf("[%d]", ktr->ktr_code); 507 } else { 508 sys_name = emul->sysnames[ktr->ktr_code]; 509 (void)printf("%s", sys_name); 510 } 511 #ifdef _LP64 512 #define NETBSD32_ "netbsd32_" 513 if (cur_emul->flags & EMUL_FLAG_NETBSD32) { 514 size_t len = strlen(NETBSD32_); 515 if (strncmp(sys_name, NETBSD32_, len) == 0) 516 sys_name += len; 517 } 518 #undef NETBSD32_ 519 #endif 520 521 ap = (register_t *)((char *)ktr + sizeof(struct ktr_syscall)); 522 if (argcount) { 523 c = '('; 524 if (plain) { 525 ; 526 527 } else if (strcmp(sys_name, "exit_group") == 0 || 528 (strcmp(emul->name, "linux") != 0 && 529 strcmp(emul->name, "linux32") != 0 && 530 strcmp(sys_name, "exit") == 0)) { 531 ectx_delete(); 532 533 } else if (strcmp(sys_name, "ioctl") == 0 && argcount >= 2) { 534 (void)putchar('('); 535 output_long((long)*ap, !(decimal || small(*ap))); 536 ap++; 537 argcount--; 538 if ((cp = ioctlname(*ap)) != NULL) 539 (void)printf(",%s", cp); 540 else { 541 (void)putchar(','); 542 ioctldecode(*ap); 543 } 544 ap++; 545 argcount--; 546 c = ','; 547 548 } else if ((strstr(sys_name, "sigaction") != NULL || 549 strstr(sys_name, "sigvec") != NULL) && argcount >= 1) { 550 (void)printf("(SIG%s", signame(ap[0], 1)); 551 ap += 1; 552 argcount -= 1; 553 c = ','; 554 555 } else if ((strcmp(sys_name, "kill") == 0 || 556 strcmp(sys_name, "killpg") == 0) && argcount >= 2) { 557 putchar('('); 558 output_long((long)ap[0], !(decimal || small(*ap))); 559 (void)printf(", SIG%s", signame(ap[1], 1)); 560 ap += 2; 561 argcount -= 2; 562 c = ','; 563 564 } else if (strcmp(sys_name, "ptrace") == 0 && argcount >= 1) { 565 putchar('('); 566 if (strcmp(emul->name, "linux") == 0 || 567 strcmp(emul->name, "linux32") == 0) { 568 if ((long)*ap >= 0 && *ap < 569 (register_t)(sizeof(linux_ptrace_ops) / 570 sizeof(linux_ptrace_ops[0]))) 571 (void)printf("%s", 572 linux_ptrace_ops[*ap]); 573 else 574 output_long((long)*ap, 1); 575 } else { 576 if ((long)*ap >= 0 && *ap < (register_t) 577 __arraycount(ptrace_ops)) 578 (void)printf("%s", ptrace_ops[*ap]); 579 #ifdef PT_MACHDEP_STRINGS 580 else if (*ap >= PT_FIRSTMACH && 581 *ap - PT_FIRSTMACH < (register_t) 582 __arraycount(ptrace_machdep_ops)) 583 (void)printf("%s", ptrace_machdep_ops[*ap - PT_FIRSTMACH]); 584 #endif 585 else 586 output_long((long)*ap, 1); 587 } 588 ap++; 589 argcount--; 590 c = ','; 591 592 } 593 while (argcount > 0) { 594 putchar(c); 595 output_long((long)*ap, !(decimal || small(*ap))); 596 ap++; 597 argcount--; 598 c = ','; 599 } 600 (void)putchar(')'); 601 } 602 (void)putchar('\n'); 603 } 604 605 static void 606 ktrsysret(struct ktr_sysret *ktr, int len) 607 { 608 const struct emulation *emul; 609 int error = ktr->ktr_error; 610 int code = ktr->ktr_code; 611 612 if (emul_changed) { 613 /* In order to get system call name right in execve return */ 614 emul = prev_emul; 615 emul_changed = 0; 616 } else 617 emul = cur_emul; 618 619 if (numeric || ((code >= emul->nsysnames || code < 0 || plain > 1))) 620 (void)printf("[%d] ", code); 621 else 622 (void)printf("%s ", emul->sysnames[code]); 623 624 switch (error) { 625 case 0: 626 rprint(ktr->ktr_retval); 627 if (len > (int)offsetof(struct ktr_sysret, ktr_retval_1) && 628 ktr->ktr_retval_1 != 0) { 629 (void)printf(", "); 630 rprint(ktr->ktr_retval_1); 631 } 632 break; 633 634 default: 635 eprint(error); 636 break; 637 } 638 (void)putchar('\n'); 639 } 640 641 static void 642 ktrexecfd(struct ktr_execfd *ktr) 643 { 644 static const char *dnames[] = { DTYPE_NAMES }; 645 if (ktr->ktr_dtype < __arraycount(dnames)) 646 printf("%s %d\n", dnames[ktr->ktr_dtype], ktr->ktr_fd); 647 else 648 printf("UNKNOWN(%u) %d\n", ktr->ktr_dtype, ktr->ktr_fd); 649 } 650 651 static void 652 rprint(register_t ret) 653 { 654 655 if (!plain) { 656 (void)printf("%ld", (long)ret); 657 if (!small(ret)) 658 (void)printf("/%#lx", (long)ret); 659 } else { 660 if (decimal || small(ret)) 661 (void)printf("%ld", (long)ret); 662 else 663 (void)printf("%#lx", (long)ret); 664 } 665 } 666 667 /* 668 * We print the original emulation's error numerically, but we 669 * translate it to netbsd to print it symbolically. 670 */ 671 static void 672 eprint(int e) 673 { 674 int i = e; 675 676 if (cur_emul->errnomap) { 677 678 /* No remapping for ERESTART and EJUSTRETURN */ 679 /* Kludge for linux that has negative error numbers */ 680 if (cur_emul->errnomap[2] > 0 && e < 0) 681 goto normal; 682 683 for (i = 0; i < cur_emul->nerrnomap; i++) 684 if (e == cur_emul->errnomap[i]) 685 break; 686 687 if (i == cur_emul->nerrnomap) { 688 printf("-1 unknown errno %d", e); 689 return; 690 } 691 } 692 693 normal: 694 switch (i) { 695 case ERESTART: 696 (void)printf("RESTART"); 697 break; 698 699 case EJUSTRETURN: 700 (void)printf("JUSTRETURN"); 701 break; 702 703 default: 704 (void)printf("-1 errno %d", e); 705 if (!plain) 706 (void)printf(" %s", strerror(i)); 707 } 708 } 709 710 static void 711 ktrnamei(char *cp, int len) 712 { 713 714 (void)printf("\"%.*s\"\n", len, cp); 715 } 716 717 static void 718 ktremul(char *name, int len, int bufsize) 719 { 720 721 if (len >= bufsize) 722 len = bufsize - 1; 723 724 name[len] = '\0'; 725 setemul(name, ktr_header.ktr_pid, 1); 726 emul_changed = 1; 727 728 (void)printf("\"%s\"\n", name); 729 } 730 731 static void 732 hexdump_buf(const void *vdp, int datalen, int word_sz) 733 { 734 const char hex[] = "0123456789abcdef"; 735 char chars[16], prev[16]; 736 char bytes[16 * 3 + 4]; 737 const unsigned char *dp = vdp; 738 const unsigned char *datalim = dp + datalen; 739 const unsigned char *line_end; 740 int off, l = 0, c; 741 char *cp, *bp; 742 int divmask = word_sz - 1; /* block size in bytes */ 743 int gdelim = 3; /* gap between blocks */ 744 int bsize = 2; /* increment for each byte */ 745 int width; 746 int dupl = 0; 747 #if _BYTE_ORDER == _LITTLE_ENDIAN 748 int bswap = word_sz - 1; 749 #else 750 #define bswap 0 751 #endif 752 753 switch (word_sz) { 754 case 2: 755 gdelim = 2; 756 break; 757 case 1: 758 divmask = 7; 759 bsize = 3; 760 gdelim = 1; 761 break; 762 default: 763 break; 764 } 765 width = 16 * bsize + (16 / (divmask + 1)) * gdelim; 766 if (word_sz != 1) 767 width += 2; 768 769 for (off = 0; dp < datalim; off += l) { 770 memset(bytes, ' ', sizeof bytes); 771 line_end = dp + 16; 772 if (line_end >= datalim) { 773 line_end = datalim; 774 dupl |= 1; /* need to print */ 775 } else { 776 if (dupl == 0 || memcmp(dp, prev, sizeof chars)) 777 dupl |= 1; 778 } 779 780 if (!(dupl & 1)) { 781 /* This is a duplicate of the line above, count 'em */ 782 dupl += 2; 783 dp = line_end; 784 continue; 785 } 786 787 if (dupl > 3) { 788 /* previous line as a duplicate */ 789 if (dupl == 5) 790 /* Only one duplicate, print line */ 791 printf("\t%-5.3x%.*s%.*s\n", 792 off - l, width, bytes, l, chars); 793 else 794 printf("\t%.*s\n", 795 snprintf(NULL, 0, "%3x", off), "*****"); 796 } 797 798 for (l = 0, bp = bytes, cp = chars; dp < line_end; l++) { 799 c = *dp++; 800 prev[l] = c; 801 if ((l & divmask) == 0) 802 bp += gdelim; 803 bp[(l ^ bswap) * bsize] = hex[c >> 4]; 804 bp[(l ^ bswap) * bsize + 1] = hex[c & 0xf]; 805 *cp++ = isgraph(c) ? c : '.'; 806 } 807 808 printf("\t%-5.3x%.*s%.*s\n", off, width, bytes, l, chars); 809 dupl = 2; 810 } 811 } 812 813 static void 814 visdump_buf(const void *vdp, int datalen, int col) 815 { 816 const unsigned char *dp = vdp; 817 char *cp; 818 int width; 819 char visbuf[5]; 820 static int screenwidth = 0; 821 822 if (screenwidth == 0) { 823 struct winsize ws; 824 825 if (!plain && ioctl(fileno(stderr), TIOCGWINSZ, &ws) != -1 && 826 ws.ws_col > 8) 827 screenwidth = ws.ws_col; 828 else 829 screenwidth = 80; 830 } 831 832 (void)printf("\""); 833 col++; 834 for (; datalen > 0; datalen--, dp++) { 835 (void)svis(visbuf, *dp, VIS_CSTYLE, 836 datalen > 1 ? *(dp + 1) : 0, "\"\n"); 837 cp = visbuf; 838 /* 839 * Keep track of printables and 840 * space chars (like fold(1)). 841 */ 842 if (col == 0) { 843 (void)putchar('\t'); 844 col = 8; 845 } 846 switch (*cp) { 847 case '\n': 848 col = 0; 849 (void)putchar('\n'); 850 continue; 851 case '\t': 852 width = 8 - (col & 07); 853 break; 854 default: 855 width = strlen(cp); 856 } 857 if (col + width > (screenwidth - 2)) { 858 (void)printf("\\\n\t"); 859 col = 8; 860 if (*cp == '\t') 861 width = 8; 862 } 863 col += width; 864 do { 865 (void)putchar(*cp++); 866 } while (*cp); 867 } 868 if (col == 0) 869 (void)printf(" "); 870 (void)printf("\"\n"); 871 } 872 873 static void 874 ktrgenio(struct ktr_genio *ktr, int len) 875 { 876 int datalen = len - sizeof (struct ktr_genio); 877 char *dp = (char *)ktr + sizeof (struct ktr_genio); 878 879 if (ktr->ktr_fd != -1) 880 printf("fd %d ", ktr->ktr_fd); 881 printf("%s %d bytes\n", 882 ktr->ktr_rw == UIO_READ ? "read" : "wrote", datalen); 883 if (maxdata == 0) 884 return; 885 if (maxdata > 0 && datalen > maxdata) 886 datalen = maxdata; 887 if (word_size) { 888 hexdump_buf(dp, datalen, word_size); 889 return; 890 } 891 (void)printf(" "); 892 visdump_buf(dp, datalen, 7); 893 } 894 895 static void 896 ktrpsig(void *v, int len) 897 { 898 int signo, first; 899 struct { 900 struct ktr_psig ps; 901 siginfo_t si; 902 } *psig = v; 903 siginfo_t *si = &psig->si; 904 const char *code; 905 906 (void)printf("SIG%s ", signame(psig->ps.signo, 0)); 907 if (psig->ps.action == SIG_DFL) 908 (void)printf("SIG_DFL"); 909 else { 910 (void)printf("caught handler=%p mask=(", psig->ps.action); 911 first = 1; 912 for (signo = 1; signo < NSIG; signo++) { 913 if (sigismember(&psig->ps.mask, signo)) { 914 if (first) 915 first = 0; 916 else 917 (void)printf(","); 918 (void)printf("%d", signo); 919 } 920 } 921 (void)printf(")"); 922 } 923 switch (len) { 924 case sizeof(struct ktr_psig): 925 if (psig->ps.code) 926 printf(" code=0x%x", psig->ps.code); 927 printf(psig->ps.action == SIG_DFL ? "\n" : ")\n"); 928 return; 929 case sizeof(*psig): 930 if (si->si_code == 0) { 931 printf(": code=SI_USER sent by pid=%d, uid=%d)\n", 932 si->si_pid, si->si_uid); 933 return; 934 } 935 936 if (si->si_code < 0) { 937 switch (si->si_code) { 938 case SI_TIMER: 939 case SI_QUEUE: 940 printf(": code=%s sent by pid=%d, uid=%d with " 941 "sigval %p)\n", si->si_code == SI_TIMER ? 942 "SI_TIMER" : "SI_QUEUE", si->si_pid, 943 si->si_uid, si->si_value.sival_ptr); 944 return; 945 case SI_ASYNCIO: 946 case SI_MESGQ: 947 printf(": code=%s with sigval %p)\n", 948 si->si_code == SI_ASYNCIO ? 949 "SI_ASYNCIO" : "SI_MESGQ", 950 si->si_value.sival_ptr); 951 return; 952 case SI_LWP: 953 printf(": code=SI_LWP sent by pid=%d, " 954 "uid=%d)\n", si->si_pid, si->si_uid); 955 return; 956 default: 957 code = NULL; 958 break; 959 } 960 if (code) 961 printf(": code=%s unimplemented)\n", code); 962 else 963 printf(": code=%d unimplemented)\n", 964 si->si_code); 965 return; 966 } 967 968 if (si->si_code == SI_NOINFO) { 969 printf(": code=SI_NOINFO\n"); 970 return; 971 } 972 973 code = siginfocodename(si->si_signo, si->si_code); 974 switch (si->si_signo) { 975 case SIGCHLD: 976 printf(": code=%s child pid=%d, uid=%d, " 977 " status=%u, utime=%lu, stime=%lu)\n", 978 code, si->si_pid, 979 si->si_uid, si->si_status, 980 (unsigned long) si->si_utime, 981 (unsigned long) si->si_stime); 982 return; 983 case SIGILL: 984 case SIGFPE: 985 case SIGSEGV: 986 case SIGBUS: 987 case SIGTRAP: 988 printf(": code=%s, addr=%p, trap=%d)\n", 989 code, si->si_addr, si->si_trap); 990 return; 991 case SIGIO: 992 printf(": code=%s, fd=%d, band=%lx)\n", 993 code, si->si_fd, si->si_band); 994 return; 995 default: 996 printf(": code=%s, errno=%d)\n", 997 code, si->si_errno); 998 return; 999 } 1000 /*NOTREACHED*/ 1001 default: 1002 warnx("Unhandled size %d for ktrpsig\n", len); 1003 break; 1004 } 1005 } 1006 1007 static void 1008 ktrcsw(struct ktr_csw *cs) 1009 { 1010 1011 (void)printf("%s %s\n", cs->out ? "stop" : "resume", 1012 cs->user ? "user" : "kernel"); 1013 } 1014 1015 static void 1016 ktruser_msghdr(const char *name, const void *buf, size_t len) 1017 { 1018 struct msghdr m; 1019 1020 if (len != sizeof(m)) 1021 warnx("%.*s: len %zu != %zu", KTR_USER_MAXIDLEN, name, len, 1022 sizeof(m)); 1023 memcpy(&m, buf, len); 1024 printf("%.*s: [name=%p, namelen=%zu, iov=%p, iovlen=%zu, control=%p, " 1025 "controllen=%zu, flags=%x]\n", KTR_USER_MAXIDLEN, name, 1026 m.msg_name, (size_t)m.msg_namelen, m.msg_iov, (size_t)m.msg_iovlen, 1027 m.msg_control, (size_t)m.msg_controllen, m.msg_flags); 1028 } 1029 1030 static void 1031 ktruser_soname(const char *name, const void *buf, size_t len) 1032 { 1033 char fmt[512]; 1034 sockaddr_snprintf(fmt, sizeof(fmt), "%a", buf); 1035 printf("%.*s: [%s]\n", KTR_USER_MAXIDLEN, name, fmt); 1036 } 1037 1038 static void 1039 ktruser_control(const char *name, const void *buf, size_t len) 1040 { 1041 struct cmsghdr m; 1042 1043 if (len < sizeof(m)) 1044 warnx("%.*s: len %zu < %zu", KTR_USER_MAXIDLEN, name, len, 1045 sizeof(m)); 1046 memcpy(&m, buf, sizeof(m)); 1047 printf("%.*s: [len=%zu, level=%d, type=%d]\n", KTR_USER_MAXIDLEN, name, 1048 (size_t)m.cmsg_len, m.cmsg_level, m.cmsg_type); 1049 } 1050 1051 static void 1052 ktruser_misc(const char *name, const void *buf, size_t len) 1053 { 1054 size_t i; 1055 const char *dta = buf; 1056 1057 printf("%.*s: %zu, ", KTR_USER_MAXIDLEN, name, len); 1058 for (i = 0; i < len; i++) 1059 printf("%02x", (unsigned int) dta[i]); 1060 printf("\n"); 1061 } 1062 1063 static struct { 1064 const char *name; 1065 void (*func)(const char *, const void *, size_t); 1066 } nv[] = { 1067 { "msghdr", ktruser_msghdr }, 1068 { "mbsoname", ktruser_soname }, 1069 { "mbcontrol", ktruser_control }, 1070 { NULL, ktruser_misc }, 1071 }; 1072 1073 static void 1074 ktruser(struct ktr_user *usr, int len) 1075 { 1076 unsigned char *dta; 1077 1078 len -= sizeof(struct ktr_user); 1079 dta = (unsigned char *)(usr + 1); 1080 if (word_size) { 1081 printf("%.*s:", KTR_USER_MAXIDLEN, usr->ktr_id); 1082 printf("\n"); 1083 hexdump_buf(dta, len, word_size); 1084 return; 1085 } 1086 for (size_t j = 0; j < __arraycount(nv); j++) 1087 if (nv[j].name == NULL || 1088 strncmp(nv[j].name, usr->ktr_id, KTR_USER_MAXIDLEN) == 0) { 1089 (*nv[j].func)(usr->ktr_id, dta, len); 1090 break; 1091 } 1092 } 1093 1094 static void 1095 ktrmib(int *namep, int len) 1096 { 1097 size_t i; 1098 1099 for (i = 0; i < (len / sizeof(*namep)); i++) 1100 printf("%s%d", (i == 0) ? "" : ".", namep[i]); 1101 printf("\n"); 1102 } 1103 1104 static const char * 1105 signame(long sig, int xlat) 1106 { 1107 static char buf[64]; 1108 1109 if (sig == 0) 1110 return " 0"; 1111 else if (sig < 0 || sig >= NSIG) { 1112 (void)snprintf(buf, sizeof(buf), "*unknown %ld*", sig); 1113 return buf; 1114 } else 1115 return sys_signame[(xlat && cur_emul->signalmap != NULL) ? 1116 cur_emul->signalmap[sig] : sig]; 1117 } 1118 1119 static void 1120 usage(void) 1121 { 1122 if (strcmp(getprogname(), "ioctlname") == 0) { 1123 (void)fprintf(stderr, "Usage: %s [-e emulation] <ioctl> ...\n", 1124 getprogname()); 1125 } else { 1126 (void)fprintf(stderr, "Usage: %s [-dlNnRT] [-e emulation] " 1127 "[-f file] [-m maxdata] [-p pid]\n [-t trstr] " 1128 "[-x | -X size] [file]\n", getprogname()); 1129 } 1130 exit(1); 1131 } 1132
Indexes created Wed Sep 24 05:09:52 GMT 2025