kdump.c revision 1.75
1 /* $NetBSD: kdump.c,v 1.75 2004/02/27 22:48:56 enami 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 1.75 2004/02/27 22:48:56 enami 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 #define small(v) (((long)(v) >= 0) && ((long)(v) < 10)) 80 81 static const char *ptrace_ops[] = { 82 "PT_TRACE_ME", "PT_READ_I", "PT_READ_D", "PT_READ_U", 83 "PT_WRITE_I", "PT_WRITE_D", "PT_WRITE_U", "PT_CONTINUE", 84 "PT_KILL", "PT_ATTACH", "PT_DETACH", 85 }; 86 87 static const char *linux_ptrace_ops[] = { 88 "PTRACE_TRACEME", 89 "PTRACE_PEEKTEXT", "PTRACE_PEEKDATA", "PTRACE_PEEKUSER", 90 "PTRACE_POKETEXT", "PTRACE_POKEDATA", "PTRACE_POKEUSER", 91 "PTRACE_CONT", "PTRACE_KILL", "PTRACE_SINGLESTEP", 92 NULL, NULL, 93 "PTRACE_GETREGS", "PTRACE_SETREGS", "PTRACE_GETFPREGS", 94 "PTRACE_SETFPREGS", "PTRACE_ATTACH", "PTRACE_DETACH", 95 "PTRACE_SYSCALL", 96 }; 97 98 int main(int, char **); 99 int fread_tail(char *, int, int); 100 int dumpheader(struct ktr_header *); 101 void output_long(u_long, int); 102 void ioctldecode(u_long); 103 void ktrsyscall(struct ktr_syscall *); 104 void ktrsyscall_size(struct ktr_syscall *); 105 void ktrsysret(struct ktr_sysret *, int); 106 void ktrnamei(char *, int); 107 void ktremul(char *, int, int); 108 void ktrgenio(struct ktr_genio *, int); 109 void ktrpsig(void *, int); 110 void ktrcsw(struct ktr_csw *); 111 void ktruser(struct ktr_user *, int); 112 void ktrmmsg(struct ktr_mmsg *, int); 113 void ktrmool(struct ktr_mool *, int); 114 void usage(void); 115 void eprint(int); 116 void rprint(register_t); 117 char *ioctlname(long); 118 static const char *signame(long, int); 119 static void hexdump_buf(const void *, int, int); 120 static void visdump_buf(const void *, int, int); 121 122 int 123 main(argc, argv) 124 int argc; 125 char **argv; 126 { 127 int ch, ktrlen, size; 128 void *m; 129 int trpoints = 0; 130 int trset = 0; 131 const char *emul_name = "netbsd"; 132 int col; 133 char *cp; 134 135 while ((ch = getopt(argc, argv, "e:f:dlm:Nnp:RTt:xX:")) != -1) { 136 switch (ch) { 137 case 'e': 138 emul_name = strdup(optarg); /* it's safer to copy it */ 139 break; 140 case 'f': 141 tracefile = optarg; 142 break; 143 case 'd': 144 decimal = 1; 145 break; 146 case 'l': 147 tail = 1; 148 break; 149 case 'p': 150 do_pid = strtoul(optarg, &cp, 0); 151 if (*cp != 0) 152 errx(1,"invalid number %s", optarg); 153 break; 154 case 'm': 155 maxdata = strtoul(optarg, &cp, 0); 156 if (*cp != 0) 157 errx(1,"invalid number %s", optarg); 158 break; 159 case 'N': 160 numeric++; 161 break; 162 case 'n': 163 plain++; 164 break; 165 case 'R': 166 timestamp = 2; /* relative timestamp */ 167 break; 168 case 'T': 169 timestamp = 1; 170 break; 171 case 't': 172 trset = 1; 173 trpoints = getpoints(trpoints, optarg); 174 if (trpoints < 0) 175 errx(1, "unknown trace point in %s", optarg); 176 break; 177 case 'x': 178 word_size = 1; 179 break; 180 case 'X': 181 word_size = strtoul(optarg, &cp, 0); 182 if (*cp != 0 || word_size & (word_size - 1) || 183 word_size > 16 || word_size <= 0) 184 errx(1, "argument to -X must be " 185 "1, 2, 4, 8 or 16"); 186 break; 187 default: 188 usage(); 189 } 190 } 191 argv += optind; 192 argc -= optind; 193 194 if (!trset) 195 trpoints = ALL_POINTS; 196 197 if (tracefile == NULL) { 198 if (argc == 1) { 199 tracefile = argv[0]; 200 argv++; 201 argc--; 202 } 203 else 204 tracefile = DEF_TRACEFILE; 205 } 206 207 if (argc > 0) 208 usage(); 209 210 setemul(emul_name, 0, 0); 211 mach_lookup_emul(); 212 213 m = malloc(size = 1024); 214 if (m == NULL) 215 errx(1, "malloc: %s", strerror(ENOMEM)); 216 if (!freopen(tracefile, "r", stdin)) 217 err(1, "%s", tracefile); 218 while (fread_tail((char *)&ktr_header, sizeof(struct ktr_header), 1)) { 219 if (trpoints & (1<<ktr_header.ktr_type) 220 && (do_pid == -1 || ktr_header.ktr_pid == do_pid)) 221 col = dumpheader(&ktr_header); 222 else 223 col = -1; 224 if ((ktrlen = ktr_header.ktr_len) < 0) 225 errx(1, "bogus length 0x%x", ktrlen); 226 if (ktrlen > size) { 227 while (ktrlen > size) 228 size *= 2; 229 m = realloc(m, size); 230 if (m == NULL) 231 errx(1, "realloc: %s", strerror(ENOMEM)); 232 } 233 if (ktrlen && fread_tail(m, ktrlen, 1) == 0) 234 errx(1, "data too short"); 235 if (col == -1) 236 continue; 237 238 /* update context to match currently processed record */ 239 ectx_sanify(ktr_header.ktr_pid); 240 241 switch (ktr_header.ktr_type) { 242 case KTR_SYSCALL: 243 ktrsyscall(m); 244 break; 245 case KTR_SYSRET: 246 ktrsysret(m, ktrlen); 247 break; 248 case KTR_NAMEI: 249 ktrnamei(m, ktrlen); 250 break; 251 case KTR_GENIO: 252 ktrgenio(m, ktrlen); 253 break; 254 case KTR_PSIG: 255 ktrpsig(m, ktrlen); 256 break; 257 case KTR_CSW: 258 ktrcsw(m); 259 break; 260 case KTR_EMUL: 261 ktremul(m, ktrlen, size); 262 break; 263 case KTR_USER: 264 ktruser(m, ktrlen); 265 break; 266 case KTR_MMSG: 267 ktrmmsg(m, ktrlen); 268 break; 269 case KTR_MOOL: 270 ktrmool(m, ktrlen); 271 break; 272 case KTR_EXEC_ARG: 273 case KTR_EXEC_ENV: 274 visdump_buf(m, ktrlen, col); 275 break; 276 default: 277 putchar('\n'); 278 hexdump_buf(m, ktrlen, word_size); 279 } 280 if (tail) 281 (void)fflush(stdout); 282 } 283 return (0); 284 } 285 286 int 287 fread_tail(buf, size, num) 288 char *buf; 289 int num, size; 290 { 291 int i; 292 293 while ((i = fread(buf, size, num, stdin)) == 0 && tail) { 294 (void)sleep(1); 295 clearerr(stdin); 296 } 297 return (i); 298 } 299 300 int 301 dumpheader(kth) 302 struct ktr_header *kth; 303 { 304 char unknown[64], *type; 305 static struct timeval prevtime; 306 struct timeval temp; 307 int col; 308 309 switch (kth->ktr_type) { 310 case KTR_SYSCALL: 311 type = "CALL"; 312 break; 313 case KTR_SYSRET: 314 type = "RET "; 315 break; 316 case KTR_NAMEI: 317 type = "NAMI"; 318 break; 319 case KTR_GENIO: 320 type = "GIO "; 321 break; 322 case KTR_PSIG: 323 type = "PSIG"; 324 break; 325 case KTR_CSW: 326 type = "CSW "; 327 break; 328 case KTR_EMUL: 329 type = "EMUL"; 330 break; 331 case KTR_USER: 332 type = "USER"; 333 break; 334 case KTR_MMSG: 335 type = "MMSG"; 336 break; 337 case KTR_MOOL: 338 type = "MOOL"; 339 break; 340 case KTR_EXEC_ENV: 341 type = "ENV"; 342 break; 343 case KTR_EXEC_ARG: 344 type = "ARG"; 345 break; 346 default: 347 (void)sprintf(unknown, "UNKNOWN(%d)", kth->ktr_type); 348 type = unknown; 349 } 350 351 col = printf("%6d %-8.*s ", kth->ktr_pid, MAXCOMLEN, kth->ktr_comm); 352 if (timestamp) { 353 if (timestamp == 2) { 354 if (prevtime.tv_sec == 0) 355 temp.tv_sec = temp.tv_usec = 0; 356 else 357 timersub(&kth->ktr_time, &prevtime, &temp); 358 prevtime = kth->ktr_time; 359 } else 360 temp = kth->ktr_time; 361 col += printf("%ld.%06ld ", 362 (long int)temp.tv_sec, (long int)temp.tv_usec); 363 } 364 col += printf("%-4s ", type); 365 return col; 366 } 367 368 void 369 output_long(it, as_x) 370 u_long it; 371 int as_x; 372 { 373 if (cur_emul->flags & EMUL_FLAG_NETBSD32) 374 printf(as_x ? "%#x" : "%d", (u_int)it); 375 else 376 printf(as_x ? "%#lx" : "%ld", it); 377 } 378 379 void 380 ioctldecode(cmd) 381 u_long cmd; 382 { 383 char dirbuf[4], *dir = dirbuf; 384 385 if (cmd & IOC_IN) 386 *dir++ = 'W'; 387 if (cmd & IOC_OUT) 388 *dir++ = 'R'; 389 *dir = '\0'; 390 391 printf(",_IO%s('%c',", dirbuf, (int) ((cmd >> 8) & 0xff)); 392 output_long(cmd & 0xff, decimal == 0); 393 if ((cmd & IOC_VOID) == 0) { 394 putchar(','); 395 output_long((cmd >> 16) & 0xff, decimal == 0); 396 } 397 putchar(')'); 398 } 399 400 void 401 ktrsyscall(ktr) 402 struct ktr_syscall *ktr; 403 { 404 int argcount; 405 const struct emulation *emul = cur_emul; 406 register_t *ap; 407 char c; 408 char *cp; 409 const char *sys_name; 410 411 argcount = ktr->ktr_argsize / sizeof (*ap); 412 413 emul_changed = 0; 414 415 if (numeric || 416 ((ktr->ktr_code >= emul->nsysnames || ktr->ktr_code < 0) 417 && mach_traps_dispatch(&ktr->ktr_code, &emul) == 0)) { 418 sys_name = "?"; 419 (void)printf("[%d]", ktr->ktr_code); 420 } else { 421 sys_name = emul->sysnames[ktr->ktr_code]; 422 (void)printf("%s", sys_name); 423 } 424 #ifdef _LP64 425 #define NETBSD32_ "netbsd32_" 426 if (cur_emul->flags & EMUL_FLAG_NETBSD32) { 427 size_t len = strlen(NETBSD32_); 428 if (strncmp(sys_name, NETBSD32_, len) == 0) 429 sys_name += len; 430 } 431 #undef NETBSD32_ 432 #endif 433 434 ap = (register_t *)((char *)ktr + sizeof(struct ktr_syscall)); 435 if (argcount) { 436 c = '('; 437 if (plain) { 438 ; 439 440 } else if (strcmp(sys_name, "exit") == 0) { 441 ectx_delete(); 442 443 } else if (strcmp(sys_name, "ioctl") == 0 && argcount >= 2) { 444 (void)putchar('('); 445 output_long((long)*ap, !(decimal || small(*ap))); 446 ap++; 447 argcount--; 448 if ((cp = ioctlname(*ap)) != NULL) 449 (void)printf(",%s", cp); 450 else 451 ioctldecode(*ap); 452 ap++; 453 argcount--; 454 c = ','; 455 456 } else if (strcmp(sys_name, "kill") == 0 && argcount >= 2) { 457 putchar('('); 458 output_long((long)ap[0], !(decimal || small(*ap))); 459 (void)printf(", SIG%s", signame(ap[1], 1)); 460 ap += 2; 461 argcount -= 2; 462 c = ','; 463 464 } else if (strcmp(sys_name, "ptrace") == 0 && argcount >= 1) { 465 putchar('('); 466 if (strcmp(emul->name, "linux") == 0) { 467 if (*ap >= 0 && *ap < 468 sizeof(linux_ptrace_ops) / 469 sizeof(linux_ptrace_ops[0])) 470 (void)printf("%s", 471 linux_ptrace_ops[*ap]); 472 else 473 output_long((long)*ap, 1); 474 } else { 475 if (*ap >= 0 && *ap < 476 sizeof(ptrace_ops) / sizeof(ptrace_ops[0])) 477 (void)printf("%s", ptrace_ops[*ap]); 478 else 479 output_long((long)*ap, 1); 480 } 481 ap++; 482 argcount--; 483 c = ','; 484 485 } 486 while (argcount > 0) { 487 putchar(c); 488 output_long((long)*ap, !(decimal || small(*ap))); 489 ap++; 490 argcount--; 491 c = ','; 492 } 493 (void)putchar(')'); 494 } 495 (void)putchar('\n'); 496 } 497 498 void 499 ktrsysret(ktr, len) 500 struct ktr_sysret *ktr; 501 int len; 502 { 503 const struct emulation *emul; 504 int error = ktr->ktr_error; 505 int code = ktr->ktr_code; 506 507 if (emul_changed) { 508 /* In order to get system call name right in execve return */ 509 emul = prev_emul; 510 emul_changed = 0; 511 } else 512 emul = cur_emul; 513 514 if ((code >= emul->nsysnames || code < 0 || plain > 1) 515 && (mach_traps_dispatch(&code, &emul) == 0)) 516 (void)printf("[%d] ", code); 517 else 518 (void)printf("%s ", emul->sysnames[code]); 519 520 switch (error) { 521 case 0: 522 rprint(ktr->ktr_retval); 523 if (len > offsetof(struct ktr_sysret, ktr_retval_1) && 524 ktr->ktr_retval_1 != 0) { 525 (void)printf(", "); 526 rprint(ktr->ktr_retval_1); 527 } 528 break; 529 530 default: 531 eprint(error); 532 break; 533 } 534 (void)putchar('\n'); 535 } 536 537 void 538 rprint(register_t ret) 539 { 540 if (!plain) { 541 (void)printf("%ld", (long)ret); 542 if (!small(ret)) 543 (void)printf("/%#lx", (long)ret); 544 } else { 545 if (decimal || small(ret)) 546 (void)printf("%ld", (long)ret); 547 else 548 (void)printf("%#lx", (long)ret); 549 } 550 } 551 552 /* 553 * We print the original emulation's error numerically, but we 554 * translate it to netbsd to print it symbolically. 555 */ 556 void 557 eprint(e) 558 int e; 559 { 560 int i = e; 561 562 if (cur_emul->errnomap) { 563 564 /* No remapping for ERESTART and EJUSTRETURN */ 565 /* Kludge for linux that has negative error numbers */ 566 if (cur_emul->errnomap[2] > 0 && e < 0) 567 goto normal; 568 569 for (i = 0; i < cur_emul->nerrnomap; i++) 570 if (e == cur_emul->errnomap[i]) 571 break; 572 573 if (i == cur_emul->nerrnomap) { 574 printf("-1 unknown errno %d", e); 575 return; 576 } 577 } 578 579 normal: 580 switch (i) { 581 case ERESTART: 582 (void)printf("RESTART"); 583 break; 584 585 case EJUSTRETURN: 586 (void)printf("JUSTRETURN"); 587 break; 588 589 default: 590 (void)printf("-1 errno %d", e); 591 if (!plain) 592 (void)printf(" %s", strerror(i)); 593 } 594 } 595 596 void 597 ktrnamei(cp, len) 598 char *cp; 599 int len; 600 { 601 602 (void)printf("\"%.*s\"\n", len, cp); 603 } 604 605 void 606 ktremul(name, len, bufsize) 607 char *name; 608 int len, bufsize; 609 { 610 if (len >= bufsize) 611 len = bufsize - 1; 612 613 name[len] = '\0'; 614 setemul(name, ktr_header.ktr_pid, 1); 615 emul_changed = 1; 616 617 (void)printf("\"%s\"\n", name); 618 } 619 620 static void 621 hexdump_buf(vdp, datalen, word_sz) 622 const void *vdp; 623 int datalen; 624 int word_sz; 625 { 626 const char hex[] = "0123456789abcdef"; 627 char chars[16]; 628 char bytes[16 * 3 + 4]; 629 const unsigned char *dp = vdp; 630 const unsigned char *datalim = dp + datalen; 631 const unsigned char *line_end; 632 int off, l, c; 633 char *cp, *bp; 634 int divmask = word_sz - 1; /* block size in bytes */ 635 int gdelim = 3; /* gap between blocks */ 636 int bsize = 2; /* increment for each byte */ 637 int width; 638 #if _BYTE_ORDER == _LITTLE_ENDIAN 639 int bswap = word_sz - 1; 640 #else 641 #define bswap 0 642 #endif 643 644 switch (word_sz) { 645 case 2: 646 gdelim = 2; 647 break; 648 case 1: 649 divmask = 7; 650 bsize = 3; 651 gdelim = 1; 652 break; 653 default: 654 break; 655 } 656 width = 16 * bsize + (16 / (divmask + 1)) * gdelim; 657 if (word_size != 1) 658 width += 2; 659 660 for (off = 0; dp < datalim; off += l) { 661 memset(bytes, ' ', sizeof bytes); 662 line_end = dp + 16; 663 if (line_end > datalim) 664 line_end = datalim; 665 666 for (l = 0, bp = bytes, cp = chars; dp < line_end; l++) { 667 c = *dp++; 668 if ((l & divmask) == 0) 669 bp += gdelim; 670 bp[(l ^ bswap) * bsize] = hex[c >> 4]; 671 bp[(l ^ bswap) * bsize + 1] = hex[c & 0xf]; 672 *cp++ = isgraph(c) ? c : '.'; 673 }; 674 675 printf("\t%-5.3x%.*s%.*s\n", off, width, bytes, l, chars); 676 } 677 } 678 679 static void 680 visdump_buf(const void *vdp, int datalen, int col) 681 { 682 const unsigned char *dp = vdp; 683 char *cp; 684 int width; 685 char visbuf[5]; 686 static int screenwidth = 0; 687 688 if (screenwidth == 0) { 689 struct winsize ws; 690 691 if (!plain && ioctl(fileno(stderr), TIOCGWINSZ, &ws) != -1 && 692 ws.ws_col > 8) 693 screenwidth = ws.ws_col; 694 else 695 screenwidth = 80; 696 } 697 698 (void)printf("\""); 699 col++; 700 for (; datalen > 0; datalen--, dp++) { 701 (void)svis(visbuf, *dp, VIS_CSTYLE, 702 datalen > 1 ? *(dp + 1) : 0, "\""); 703 cp = visbuf; 704 /* 705 * Keep track of printables and 706 * space chars (like fold(1)). 707 */ 708 if (col == 0) { 709 (void)putchar('\t'); 710 col = 8; 711 } 712 switch(*cp) { 713 case '\n': 714 col = 0; 715 (void)putchar('\n'); 716 continue; 717 case '\t': 718 width = 8 - (col & 07); 719 break; 720 default: 721 width = strlen(cp); 722 } 723 if (col + width > (screenwidth - 2)) { 724 (void)printf("\\\n\t"); 725 col = 8; 726 if (*cp == '\t') 727 width = 8; 728 } 729 col += width; 730 do { 731 (void)putchar(*cp++); 732 } while (*cp); 733 } 734 if (col == 0) 735 (void)printf(" "); 736 (void)printf("\"\n"); 737 } 738 739 void 740 ktrgenio(ktr, len) 741 struct ktr_genio *ktr; 742 int len; 743 { 744 int datalen = len - sizeof (struct ktr_genio); 745 char *dp = (char *)ktr + sizeof (struct ktr_genio); 746 747 printf("fd %d %s %d bytes\n", ktr->ktr_fd, 748 ktr->ktr_rw == UIO_READ ? "read" : "wrote", datalen); 749 if (maxdata == 0) 750 return; 751 if (maxdata > 0 && datalen > maxdata) 752 datalen = maxdata; 753 if (word_size) { 754 hexdump_buf(dp, datalen, word_size); 755 return; 756 } 757 (void)printf(" "); 758 visdump_buf(dp, datalen, 7); 759 } 760 761 void 762 ktrpsig(v, len) 763 void *v; 764 int len; 765 { 766 int signo, first; 767 struct { 768 struct ktr_psig ps; 769 siginfo_t si; 770 } *psig = v; 771 siginfo_t *si = &psig->si; 772 const char *code; 773 774 (void)printf("SIG%s ", signame(psig->ps.signo, 0)); 775 if (psig->ps.action == SIG_DFL) 776 (void)printf("SIG_DFL"); 777 else { 778 (void)printf("caught handler=%p mask=(", psig->ps.action); 779 first = 1; 780 for (signo = 1; signo < NSIG; signo++) { 781 if (sigismember(&psig->ps.mask, signo)) { 782 if (first) 783 first = 0; 784 else 785 (void)printf(","); 786 (void)printf("%d", signo); 787 } 788 } 789 (void)printf(")"); 790 } 791 switch (len) { 792 case sizeof(struct ktr_psig): 793 if (psig->ps.code) 794 printf(" code=0x%x", psig->ps.code); 795 printf(psig->ps.action == SIG_DFL ? "\n" : ")\n"); 796 return; 797 case sizeof(*psig): 798 if (si->si_code == 0) { 799 printf(": code=SI_USER sent by pid=%d, uid=%d)\n", 800 si->si_pid, si->si_uid); 801 return; 802 } 803 804 if (si->si_code < 0) { 805 switch (si->si_code) { 806 case SI_TIMER: 807 printf(": code=SI_TIMER sigval %p)\n", 808 si->si_sigval.sival_ptr); 809 return; 810 case SI_QUEUE: 811 code = "SI_QUEUE"; 812 break; 813 case SI_ASYNCIO: 814 code = "SI_ASYNCIO"; 815 break; 816 case SI_MESGQ: 817 code = "SI_MESGQ"; 818 break; 819 default: 820 code = NULL; 821 break; 822 } 823 if (code) 824 printf(": code=%s unimplemented)\n", code); 825 else 826 printf(": code=%d unimplemented)\n", 827 si->si_code); 828 return; 829 } 830 831 code = siginfocodename(si->si_signo, si->si_code); 832 switch (si->si_signo) { 833 case SIGCHLD: 834 printf(": code=%s child pid=%d, uid=%d, " 835 " status=%u, utime=%lu, stime=%lu)\n", 836 code, si->si_pid, 837 si->si_uid, si->si_status, 838 (unsigned long) si->si_utime, 839 (unsigned long) si->si_stime); 840 return; 841 case SIGILL: 842 case SIGFPE: 843 case SIGSEGV: 844 case SIGBUS: 845 case SIGTRAP: 846 printf(": code=%s, addr=%p, trap=%d)\n", 847 code, si->si_addr, si->si_trap); 848 return; 849 case SIGIO: 850 printf(": code=%s, fd=%d, band=%lx)\n", 851 code, si->si_fd, si->si_band); 852 return; 853 default: 854 printf(": code=%s, errno=%d)\n", 855 code, si->si_errno); 856 return; 857 } 858 /*NOTREACHED*/ 859 default: 860 warnx("Unhandled size %d for ktrpsig\n", len); 861 break; 862 } 863 } 864 865 void 866 ktrcsw(cs) 867 struct ktr_csw *cs; 868 { 869 870 (void)printf("%s %s\n", cs->out ? "stop" : "resume", 871 cs->user ? "user" : "kernel"); 872 } 873 874 void 875 ktruser(usr, len) 876 struct ktr_user *usr; 877 int len; 878 { 879 int i; 880 unsigned char *dta; 881 882 printf("\"%.*s: %d, ", KTR_USER_MAXIDLEN, usr->ktr_id, len); 883 dta = (unsigned char *)usr; 884 for(i=sizeof(struct ktr_user); i < len; i++) 885 printf("%02x", (unsigned int) dta[i]); 886 printf("\"\n"); 887 } 888 889 void 890 ktrmmsg(mmsg, len) 891 struct ktr_mmsg *mmsg; 892 int len; 893 { 894 const char *service_name; 895 char *reply; 896 int id; 897 898 id = mmsg->ktr_id; 899 if ((id / 100) % 2) { /* Message reply */ 900 reply = " reply"; 901 id -= 100; 902 } else { 903 reply = ""; 904 } 905 906 if ((service_name = mach_service_name(id)) != NULL) 907 printf("%s%s [%d]\n", service_name, reply, mmsg->ktr_id); 908 else 909 printf("unknown service%s [%d]\n", reply, mmsg->ktr_id); 910 911 hexdump_buf(mmsg, len, word_size ? word_size : 4); 912 } 913 914 void 915 ktrmool(mool, len) 916 struct ktr_mool *mool; 917 int len; 918 { 919 size_t size = mool->size; 920 921 printf("%ld/0x%lx bytes at %p\n", 922 (u_long)size, (u_long)size, mool->uaddr); 923 mool++; 924 hexdump_buf(mool, size, word_size ? word_size : 4); 925 } 926 927 static const char * 928 signame(long sig, int xlat) 929 { 930 static char buf[64]; 931 if (sig == 0) 932 return " 0"; 933 else if (sig < 0 || sig >= NSIG) { 934 (void)snprintf(buf, sizeof(buf), "*unknown %ld*", sig); 935 return buf; 936 } else 937 return sys_signame[(xlat && cur_emul->signalmap != NULL) ? 938 cur_emul->signalmap[sig] : sig]; 939 } 940 941 void 942 usage() 943 { 944 945 (void)fprintf(stderr, "usage: kdump [-dlNnRT] [-e emulation] " 946 "[-f file] [-m maxdata] [-p pid]\n [-t trstr] " 947 "[-x | -X size] [file]\n"); 948 exit(1); 949 } 950
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