kdump.c revision 1.70
1 /* $NetBSD: kdump.c,v 1.70 2003/11/24 22:12:14 manu 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\n\ 35 The Regents of the University of California. All rights reserved.\n"); 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 1.70 2003/11/24 22:12:14 manu Exp $"); 43 #endif 44 #endif /* not lint */ 45 46 #include <sys/param.h> 47 #define _KERNEL 48 #include <sys/errno.h> 49 #undef _KERNEL 50 #include <sys/time.h> 51 #include <sys/uio.h> 52 #include <sys/ktrace.h> 53 #include <sys/ioctl.h> 54 #include <sys/ptrace.h> 55 56 #include <ctype.h> 57 #include <err.h> 58 #include <signal.h> 59 #include <stddef.h> 60 #include <stdio.h> 61 #include <stdlib.h> 62 #include <string.h> 63 #include <unistd.h> 64 #include <vis.h> 65 66 #include "ktrace.h" 67 #include "setemul.h" 68 69 #include <sys/syscall.h> 70 71 int timestamp, decimal, plain, tail, maxdata = -1, numeric; 72 int word_size = 0; 73 pid_t do_pid = -1; 74 const char *tracefile = NULL; 75 struct ktr_header ktr_header; 76 int emul_changed = 0; 77 78 #define eqs(s1, s2) (strcmp((s1), (s2)) == 0) 79 80 static const char *ptrace_ops[] = { 81 "PT_TRACE_ME", "PT_READ_I", "PT_READ_D", "PT_READ_U", 82 "PT_WRITE_I", "PT_WRITE_D", "PT_WRITE_U", "PT_CONTINUE", 83 "PT_KILL", "PT_ATTACH", "PT_DETACH", 84 }; 85 86 static const char *linux_ptrace_ops[] = { 87 "PTRACE_TRACEME", 88 "PTRACE_PEEKTEXT", "PTRACE_PEEKDATA", "PTRACE_PEEKUSER", 89 "PTRACE_POKETEXT", "PTRACE_POKEDATA", "PTRACE_POKEUSER", 90 "PTRACE_CONT", "PTRACE_KILL", "PTRACE_SINGLESTEP", 91 NULL, NULL, 92 "PTRACE_GETREGS", "PTRACE_SETREGS", "PTRACE_GETFPREGS", 93 "PTRACE_SETFPREGS", "PTRACE_ATTACH", "PTRACE_DETACH", 94 "PTRACE_SYSCALL", 95 }; 96 97 int main __P((int, char **)); 98 int fread_tail __P((char *, int, int)); 99 int dumpheader __P((struct ktr_header *)); 100 void ioctldecode __P((u_long)); 101 void ktrsyscall __P((struct ktr_syscall *)); 102 void ktrsysret __P((struct ktr_sysret *, int)); 103 void ktrnamei __P((char *, int)); 104 void ktremul __P((char *, int, int)); 105 void ktrgenio __P((struct ktr_genio *, int)); 106 void ktrpsig __P((void *, int)); 107 void ktrcsw __P((struct ktr_csw *)); 108 void ktruser __P((struct ktr_user *, int)); 109 void ktrmmsg __P((struct ktr_mmsg *, int)); 110 void ktrmool __P((struct ktr_mool *, int)); 111 void usage __P((void)); 112 void eprint __P((int)); 113 void rprint __P((register_t)); 114 char *ioctlname __P((long)); 115 static const char *signame __P((long, int)); 116 static void hexdump_buf(const void *, int, int); 117 static void visdump_buf(const void *, int, int); 118 119 int 120 main(argc, argv) 121 int argc; 122 char *argv[]; 123 { 124 int ch, ktrlen, size; 125 void *m; 126 int trpoints = 0; 127 int trset = 0; 128 const char *emul_name = "netbsd"; 129 int col; 130 char *cp; 131 132 while ((ch = getopt(argc, argv, "e:f:dlm:Nnp:RTt:xX:")) != -1) { 133 switch (ch) { 134 case 'e': 135 emul_name = strdup(optarg); /* it's safer to copy it */ 136 break; 137 case 'f': 138 tracefile = optarg; 139 break; 140 case 'd': 141 decimal = 1; 142 break; 143 case 'l': 144 tail = 1; 145 break; 146 case 'p': 147 do_pid = strtoul(optarg, &cp, 0); 148 if (*cp != 0) 149 errx(1,"invalid number %s", optarg); 150 break; 151 case 'm': 152 maxdata = strtoul(optarg, &cp, 0); 153 if (*cp != 0) 154 errx(1,"invalid number %s", optarg); 155 break; 156 case 'N': 157 numeric++; 158 break; 159 case 'n': 160 plain++; 161 break; 162 case 'R': 163 timestamp = 2; /* relative timestamp */ 164 break; 165 case 'T': 166 timestamp = 1; 167 break; 168 case 't': 169 trset = 1; 170 trpoints = getpoints(trpoints, optarg); 171 if (trpoints < 0) 172 errx(1, "unknown trace point in %s", optarg); 173 break; 174 case 'x': 175 word_size = 1; 176 break; 177 case 'X': 178 word_size = strtoul(optarg, &cp, 0); 179 if (*cp != 0 || word_size & (word_size - 1) || 180 word_size > 16 || word_size <= 0) 181 errx(1, "argument to -X must be " 182 "1, 2, 4, 8 or 16"); 183 break; 184 default: 185 usage(); 186 } 187 } 188 argv += optind; 189 argc -= optind; 190 191 if (!trset) 192 trpoints = ALL_POINTS; 193 194 if (tracefile == NULL) { 195 if (argc == 1) { 196 tracefile = argv[0]; 197 argv++; 198 argc--; 199 } 200 else 201 tracefile = DEF_TRACEFILE; 202 } 203 204 if (argc > 0) 205 usage(); 206 207 setemul(emul_name, 0, 0); 208 mach_lookup_emul(); 209 210 m = malloc(size = 1024); 211 if (m == NULL) 212 errx(1, "malloc: %s", strerror(ENOMEM)); 213 if (!freopen(tracefile, "r", stdin)) 214 err(1, "%s", tracefile); 215 while (fread_tail((char *)&ktr_header, sizeof(struct ktr_header), 1)) { 216 if (trpoints & (1<<ktr_header.ktr_type) 217 && (do_pid == -1 || ktr_header.ktr_pid == do_pid)) 218 col = dumpheader(&ktr_header); 219 else 220 col = -1; 221 if ((ktrlen = ktr_header.ktr_len) < 0) 222 errx(1, "bogus length 0x%x", ktrlen); 223 if (ktrlen > size) { 224 while (ktrlen > size) 225 size *= 2; 226 m = realloc(m, size); 227 if (m == NULL) 228 errx(1, "realloc: %s", strerror(ENOMEM)); 229 } 230 if (ktrlen && fread_tail(m, ktrlen, 1) == 0) 231 errx(1, "data too short"); 232 if (col == -1) 233 continue; 234 235 /* update context to match currently processed record */ 236 ectx_sanify(ktr_header.ktr_pid); 237 238 switch (ktr_header.ktr_type) { 239 case KTR_SYSCALL: 240 ktrsyscall(m); 241 break; 242 case KTR_SYSRET: 243 ktrsysret(m, ktrlen); 244 break; 245 case KTR_NAMEI: 246 ktrnamei(m, ktrlen); 247 break; 248 case KTR_GENIO: 249 ktrgenio(m, ktrlen); 250 break; 251 case KTR_PSIG: 252 ktrpsig(m, ktrlen); 253 break; 254 case KTR_CSW: 255 ktrcsw(m); 256 break; 257 case KTR_EMUL: 258 ktremul(m, ktrlen, size); 259 break; 260 case KTR_USER: 261 ktruser(m, ktrlen); 262 break; 263 case KTR_MMSG: 264 ktrmmsg(m, ktrlen); 265 break; 266 case KTR_MOOL: 267 ktrmool(m, ktrlen); 268 break; 269 case KTR_EXEC_ARG: 270 case KTR_EXEC_ENV: 271 visdump_buf(m, ktrlen, col); 272 break; 273 default: 274 printf("\n"); 275 hexdump_buf(m, ktrlen, word_size); 276 } 277 if (tail) 278 (void)fflush(stdout); 279 } 280 return (0); 281 } 282 283 int 284 fread_tail(buf, size, num) 285 char *buf; 286 int num, size; 287 { 288 int i; 289 290 while ((i = fread(buf, size, num, stdin)) == 0 && tail) { 291 (void)sleep(1); 292 clearerr(stdin); 293 } 294 return (i); 295 } 296 297 int 298 dumpheader(kth) 299 struct ktr_header *kth; 300 { 301 char unknown[64], *type; 302 static struct timeval prevtime; 303 struct timeval temp; 304 int col; 305 306 switch (kth->ktr_type) { 307 case KTR_SYSCALL: 308 type = "CALL"; 309 break; 310 case KTR_SYSRET: 311 type = "RET "; 312 break; 313 case KTR_NAMEI: 314 type = "NAMI"; 315 break; 316 case KTR_GENIO: 317 type = "GIO "; 318 break; 319 case KTR_PSIG: 320 type = "PSIG"; 321 break; 322 case KTR_CSW: 323 type = "CSW "; 324 break; 325 case KTR_EMUL: 326 type = "EMUL"; 327 break; 328 case KTR_USER: 329 type = "USER"; 330 break; 331 case KTR_MMSG: 332 type = "MMSG"; 333 break; 334 case KTR_MOOL: 335 type = "MOOL"; 336 break; 337 case KTR_EXEC_ENV: 338 type = "ENV"; 339 break; 340 case KTR_EXEC_ARG: 341 type = "ARG"; 342 break; 343 default: 344 (void)sprintf(unknown, "UNKNOWN(%d)", kth->ktr_type); 345 type = unknown; 346 } 347 348 col = printf("%6d %-8.*s ", kth->ktr_pid, MAXCOMLEN, kth->ktr_comm); 349 if (timestamp) { 350 if (timestamp == 2) { 351 if (prevtime.tv_sec == 0) 352 temp.tv_sec = temp.tv_usec = 0; 353 else 354 timersub(&kth->ktr_time, &prevtime, &temp); 355 prevtime = kth->ktr_time; 356 } else 357 temp = kth->ktr_time; 358 col += printf("%ld.%06ld ", 359 (long int)temp.tv_sec, (long int)temp.tv_usec); 360 } 361 col += printf("%-4s ", type); 362 return col; 363 } 364 365 void 366 ioctldecode(cmd) 367 u_long cmd; 368 { 369 char dirbuf[4], *dir = dirbuf; 370 371 if (cmd & IOC_IN) 372 *dir++ = 'W'; 373 if (cmd & IOC_OUT) 374 *dir++ = 'R'; 375 *dir = '\0'; 376 377 printf(decimal ? ",_IO%s('%c',%ld" : ",_IO%s('%c',%#lx", 378 dirbuf, (int) ((cmd >> 8) & 0xff), cmd & 0xff); 379 if ((cmd & IOC_VOID) == 0) 380 printf(decimal ? ",%ld)" : ",%#lx)", (cmd >> 16) & 0xff); 381 else 382 printf(")"); 383 } 384 385 void 386 ktrsyscall(ktr) 387 struct ktr_syscall *ktr; 388 { 389 int argcount = ktr->ktr_argsize / sizeof (register_t); 390 const struct emulation *emul = cur_emul; 391 register_t *ap; 392 char c; 393 char *cp; 394 const char *sys_name; 395 396 emul_changed = 0; 397 398 if (((ktr->ktr_code >= emul->nsysnames || ktr->ktr_code < 0) 399 && (mach_traps_dispatch(&ktr->ktr_code, &emul) == 0)) || 400 numeric) { 401 sys_name = "?"; 402 (void)printf("[%d]", ktr->ktr_code); 403 } else { 404 sys_name = emul->sysnames[ktr->ktr_code]; 405 (void)printf("%s", sys_name); 406 } 407 ap = (register_t *)((char *)ktr + sizeof(struct ktr_syscall)); 408 if (argcount) { 409 c = '('; 410 if (plain) { 411 ; 412 413 } else if (strcmp(sys_name, "exit") == 0) { 414 ectx_delete(); 415 416 } else if (strcmp(sys_name, "ioctl") == 0 && argcount >= 2 ) { 417 if (decimal || *ap <= 9) 418 (void)printf("(%ld", (long)*ap); 419 else 420 (void)printf("(%#lx", (long)*ap); 421 ap++; 422 argcount--; 423 if ((cp = ioctlname(*ap)) != NULL) 424 (void)printf(",%s", cp); 425 else 426 ioctldecode(*ap); 427 ap++; 428 argcount--; 429 c = ','; 430 431 } else if (strcmp(sys_name, "kill") == 0 && argcount >= 2) { 432 if (decimal || *ap <= 9) 433 (void)printf("(%ld, SIG%s", 434 (long)ap[0], signame(ap[1], 1)); 435 else 436 (void)printf("(%#lx, SIG%s", 437 (long)ap[0], signame(ap[1], 1)); 438 ap += 2; 439 argcount -= 2; 440 c = ','; 441 442 } else if (strcmp(sys_name, "ptrace") == 0 && argcount >= 1) { 443 if (strcmp(emul->name, "linux") == 0) { 444 if (*ap >= 0 && *ap <= 445 sizeof(linux_ptrace_ops) / 446 sizeof(linux_ptrace_ops[0])) 447 (void)printf("(%s", 448 linux_ptrace_ops[*ap]); 449 else 450 (void)printf("(%ld", (long)*ap); 451 } else { 452 if (*ap >= 0 && *ap <= 453 sizeof(ptrace_ops) / sizeof(ptrace_ops[0])) 454 (void)printf("(%s", ptrace_ops[*ap]); 455 else 456 (void)printf("(%ld", (long)*ap); 457 } 458 ap++; 459 argcount--; 460 c = ','; 461 462 } 463 while (argcount > 0) { 464 if (decimal || *ap <= 9) 465 (void)printf("%c%ld", c, (long)*ap); 466 else 467 (void)printf("%c%#lx", c, (long)*ap); 468 ap++; 469 argcount--; 470 c = ','; 471 } 472 (void)putchar(')'); 473 } 474 (void)putchar('\n'); 475 } 476 477 void 478 ktrsysret(ktr, len) 479 struct ktr_sysret *ktr; 480 int len; 481 { 482 const struct emulation *emul; 483 int error = ktr->ktr_error; 484 int code = ktr->ktr_code; 485 486 if (emul_changed) { 487 /* In order to get system call name right in execve return */ 488 emul = prev_emul; 489 emul_changed = 0; 490 } else 491 emul = cur_emul; 492 493 if ((code >= emul->nsysnames || code < 0 || plain > 1) 494 && (mach_traps_dispatch(&code, &emul) == 0)) 495 (void)printf("[%d] ", code); 496 else 497 (void)printf("%s ", emul->sysnames[code]); 498 499 switch (error) { 500 case 0: 501 rprint(ktr->ktr_retval); 502 if (len > offsetof(struct ktr_sysret, ktr_retval_1) && 503 ktr->ktr_retval_1 != 0) { 504 (void)printf(", "); 505 rprint(ktr->ktr_retval_1); 506 } 507 break; 508 509 default: 510 eprint(error); 511 break; 512 } 513 (void)putchar('\n'); 514 } 515 516 void 517 rprint(register_t ret) 518 { 519 if (!plain) { 520 (void)printf("%ld", (long)ret); 521 if (ret < 0 || ret > 9) 522 (void)printf("/%#lx", (long)ret); 523 } else { 524 if (decimal || ret <= 9) 525 (void)printf("%ld", (long)ret); 526 else 527 (void)printf("%#lx", (long)ret); 528 } 529 } 530 531 /* 532 * We print the original emulation's error numerically, but we 533 * translate it to netbsd to print it symbolically. 534 */ 535 void 536 eprint(e) 537 int e; 538 { 539 int i = e; 540 541 if (cur_emul->errnomap) { 542 543 /* No remapping for ERESTART and EJUSTRETURN */ 544 /* Kludge for linux that has negative error numbers */ 545 if (cur_emul->errnomap[2] > 0 && e < 0) 546 goto normal; 547 548 for (i = 0; i < cur_emul->nerrnomap; i++) 549 if (e == cur_emul->errnomap[i]) 550 break; 551 552 if (i == cur_emul->nerrnomap) { 553 printf("-1 unknown errno %d", e); 554 return; 555 } 556 } 557 558 normal: 559 switch (i) { 560 case ERESTART: 561 (void)printf("RESTART"); 562 break; 563 564 case EJUSTRETURN: 565 (void)printf("JUSTRETURN"); 566 break; 567 568 default: 569 (void)printf("-1 errno %d", e); 570 if (!plain) 571 (void)printf(" %s", strerror(i)); 572 } 573 } 574 575 void 576 ktrnamei(cp, len) 577 char *cp; 578 int len; 579 { 580 581 (void)printf("\"%.*s\"\n", len, cp); 582 } 583 584 void 585 ktremul(name, len, bufsize) 586 char *name; 587 int len, bufsize; 588 { 589 if (len >= bufsize) 590 len = bufsize - 1; 591 592 name[len] = '\0'; 593 setemul(name, ktr_header.ktr_pid, 1); 594 emul_changed = 1; 595 596 (void)printf("\"%s\"\n", name); 597 } 598 599 static void 600 hexdump_buf(vdp, datalen, word_sz) 601 const void *vdp; 602 int datalen; 603 int word_sz; 604 { 605 const char hex[] = "0123456789abcdef"; 606 char chars[16]; 607 char bytes[16 * 3 + 4]; 608 const unsigned char *dp = vdp; 609 const unsigned char *datalim = dp + datalen; 610 const unsigned char *line_end; 611 int off, l, c; 612 char *cp, *bp; 613 int divmask = word_sz - 1; /* block size in bytes */ 614 int gdelim = 3; /* gap between blocks */ 615 int bsize = 2; /* increment for each byte */ 616 int width; 617 #if _BYTE_ORDER == _LITTLE_ENDIAN 618 int bswap = word_sz - 1; 619 #else 620 #define bswap 0 621 #endif 622 623 switch (word_sz) { 624 case 2: 625 gdelim = 2; 626 break; 627 case 1: 628 divmask = 7; 629 bsize = 3; 630 gdelim = 1; 631 break; 632 default: 633 break; 634 } 635 width = 16 * bsize + (16 / (divmask + 1)) * gdelim; 636 if (word_size != 1) 637 width += 2; 638 639 for (off = 0; dp < datalim; off += l) { 640 memset(bytes, ' ', sizeof bytes); 641 line_end = dp + 16; 642 if (line_end > datalim) 643 line_end = datalim; 644 645 for (l = 0, bp = bytes, cp = chars; dp < line_end; l++) { 646 c = *dp++; 647 if ((l & divmask) == 0) 648 bp += gdelim; 649 bp[(l ^ bswap) * bsize] = hex[c >> 4]; 650 bp[(l ^ bswap) * bsize + 1] = hex[c & 0xf]; 651 *cp++ = isgraph(c) ? c : '.'; 652 }; 653 654 printf("\t%-5.3x%.*s%.*s\n", off, width, bytes, l, chars); 655 } 656 } 657 658 static void 659 visdump_buf(const void *vdp, int datalen, int col) 660 { 661 const unsigned char *dp = vdp; 662 char *cp; 663 int width; 664 char visbuf[5]; 665 static int screenwidth = 0; 666 667 if (screenwidth == 0) { 668 struct winsize ws; 669 670 if (!plain && ioctl(fileno(stderr), TIOCGWINSZ, &ws) != -1 && 671 ws.ws_col > 8) 672 screenwidth = ws.ws_col; 673 else 674 screenwidth = 80; 675 } 676 677 (void)printf("\""); 678 col++; 679 for (; datalen > 0; datalen--, dp++) { 680 (void)svis(visbuf, *dp, VIS_CSTYLE, 681 datalen > 1 ? *(dp + 1) : 0, "\""); 682 cp = visbuf; 683 /* 684 * Keep track of printables and 685 * space chars (like fold(1)). 686 */ 687 if (col == 0) { 688 (void)putchar('\t'); 689 col = 8; 690 } 691 switch(*cp) { 692 case '\n': 693 col = 0; 694 (void)putchar('\n'); 695 continue; 696 case '\t': 697 width = 8 - (col & 07); 698 break; 699 default: 700 width = strlen(cp); 701 } 702 if (col + width > (screenwidth - 2)) { 703 (void)printf("\\\n\t"); 704 col = 8; 705 } 706 col += width; 707 do { 708 (void)putchar(*cp++); 709 } while (*cp); 710 } 711 if (col == 0) 712 (void)printf(" "); 713 (void)printf("\"\n"); 714 } 715 716 void 717 ktrgenio(ktr, len) 718 struct ktr_genio *ktr; 719 int len; 720 { 721 int datalen = len - sizeof (struct ktr_genio); 722 char *dp = (char *)ktr + sizeof (struct ktr_genio); 723 724 printf("fd %d %s %d bytes\n", ktr->ktr_fd, 725 ktr->ktr_rw == UIO_READ ? "read" : "wrote", datalen); 726 if (maxdata == 0) 727 return; 728 if (maxdata > 0 && datalen > maxdata) 729 datalen = maxdata; 730 if (word_size) { 731 hexdump_buf(dp, datalen, word_size); 732 return; 733 } 734 (void)printf(" "); 735 visdump_buf(dp, datalen, 7); 736 } 737 738 void 739 ktrpsig(v, len) 740 void *v; 741 int len; 742 { 743 int signo, first; 744 struct { 745 struct ktr_psig ps; 746 siginfo_t si; 747 } *psig = v; 748 siginfo_t *si = &psig->si; 749 const char *code; 750 751 (void)printf("SIG%s ", signame(psig->ps.signo, 0)); 752 if (psig->ps.action == SIG_DFL) 753 (void)printf("SIG_DFL"); 754 else { 755 (void)printf("caught handler=%p mask=(", psig->ps.action); 756 first = 1; 757 for (signo = 1; signo < NSIG; signo++) { 758 if (sigismember(&psig->ps.mask, signo)) { 759 if (first) 760 first = 0; 761 else 762 (void)printf(","); 763 (void)printf("%d", signo); 764 } 765 } 766 (void)printf(")"); 767 } 768 switch (len) { 769 case sizeof(struct ktr_psig): 770 if (psig->ps.code) 771 printf(" code=0x%x", psig->ps.code); 772 printf(psig->ps.action == SIG_DFL ? "\n" : ")\n"); 773 return; 774 case sizeof(*psig): 775 if (si->si_code == 0) { 776 printf(": code=SI_USER sent by pid=%d, uid=%d)\n", 777 si->si_pid, si->si_uid); 778 return; 779 } 780 781 if (si->si_code < 0) { 782 switch (si->si_code) { 783 case SI_TIMER: 784 printf(": code=SI_TIMER sigval %p)\n", 785 si->si_sigval.sival_ptr); 786 return; 787 case SI_QUEUE: 788 code = "SI_QUEUE"; 789 break; 790 case SI_ASYNCIO: 791 code = "SI_ASYNCIO"; 792 break; 793 case SI_MESGQ: 794 code = "SI_MESGQ"; 795 break; 796 default: 797 code = NULL; 798 break; 799 } 800 if (code) 801 printf(": code=%s unimplemented)\n", code); 802 else 803 printf(": code=%d unimplemented)\n", 804 si->si_code); 805 return; 806 } 807 808 code = siginfocodename(si->si_signo, si->si_code); 809 switch (si->si_signo) { 810 case SIGCHLD: 811 printf(": code=%s child pid=%d, uid=%d, " 812 " status=%u, utime=%lu, stime=%lu)\n", 813 code, si->si_pid, 814 si->si_uid, si->si_status, 815 (unsigned long) si->si_utime, 816 (unsigned long) si->si_stime); 817 return; 818 case SIGILL: 819 case SIGFPE: 820 case SIGSEGV: 821 case SIGBUS: 822 case SIGTRAP: 823 printf(": code=%s, addr=%p, trap=%d)\n", 824 code, si->si_addr, si->si_trap); 825 return; 826 case SIGIO: 827 printf(": code=%s, fd=%d, band=%lx)\n", 828 code, si->si_fd, si->si_band); 829 return; 830 default: 831 printf(": code=%s, errno=%d)\n", 832 code, si->si_errno); 833 return; 834 } 835 /*NOTREACHED*/ 836 default: 837 warnx("Unhandled size %d for ktrpsig\n", len); 838 break; 839 } 840 } 841 842 void 843 ktrcsw(cs) 844 struct ktr_csw *cs; 845 { 846 847 (void)printf("%s %s\n", cs->out ? "stop" : "resume", 848 cs->user ? "user" : "kernel"); 849 } 850 851 void 852 ktruser(usr, len) 853 struct ktr_user *usr; 854 int len; 855 { 856 int i; 857 unsigned char *dta; 858 859 printf("\"%.*s: %d, ", KTR_USER_MAXIDLEN, usr->ktr_id, len); 860 dta = (unsigned char *)usr; 861 for(i=sizeof(struct ktr_user); i < len; i++) 862 printf("%02x", (unsigned int) dta[i]); 863 printf("\"\n"); 864 } 865 866 void 867 ktrmmsg(mmsg, len) 868 struct ktr_mmsg *mmsg; 869 int len; 870 { 871 const char *service_name; 872 char *reply; 873 int id; 874 875 id = mmsg->ktr_id; 876 if ((id / 100) % 2) { /* Message reply */ 877 reply = " reply"; 878 id -= 100; 879 } else { 880 reply = ""; 881 } 882 883 if ((service_name = mach_service_name(id)) != NULL) 884 printf("%s%s [%d]\n", service_name, reply, mmsg->ktr_id); 885 else 886 printf("unknown service%s [%d]\n", reply, mmsg->ktr_id); 887 888 hexdump_buf(mmsg, len, word_size ? word_size : 4); 889 } 890 891 void 892 ktrmool(mool, len) 893 struct ktr_mool *mool; 894 int len; 895 { 896 size_t size = mool->size; 897 898 printf("%ld/0x%lx bytes at %p\n", 899 (u_long)size, (u_long)size, mool->uaddr); 900 mool++; 901 hexdump_buf(mool, size, word_size ? word_size : 4); 902 } 903 904 static const char * 905 signame(long sig, int xlat) 906 { 907 static char buf[64]; 908 if (sig == 0) 909 return " 0"; 910 else if (sig < 0 || sig >= NSIG) { 911 (void)snprintf(buf, sizeof(buf), "*unknown %ld*", sig); 912 return buf; 913 } else 914 return sys_signame[(xlat && cur_emul->signalmap != NULL) ? 915 cur_emul->signalmap[sig] : sig]; 916 } 917 918 void 919 usage() 920 { 921 922 (void)fprintf(stderr, "usage: kdump [-dlNnRT] [-e emulation] " 923 "[-f file] [-m maxdata] [-p pid]\n [-t trstr] " 924 "[-x | -X size] [file]\n"); 925 exit(1); 926 } 927
Indexes created Thu Sep 25 08:09:54 GMT 2025