kdump.c revision 1.60
1 /* $NetBSD: kdump.c,v 1.60 2003/09/19 22:49:02 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\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 1.60 2003/09/19 22:49:02 christos 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 hexdump; 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 usage __P((void)); 111 void eprint __P((int)); 112 void rprint __P((register_t)); 113 char *ioctlname __P((long)); 114 static const char *signame __P((long, int)); 115 static void hexdump_buf(const void *, int); 116 static void visdump_buf(const void *, int, int); 117 118 int 119 main(argc, argv) 120 int argc; 121 char *argv[]; 122 { 123 int ch, ktrlen, size; 124 void *m; 125 int trpoints = 0; 126 int trset = 0; 127 const char *emul_name = "netbsd"; 128 int col; 129 130 while ((ch = getopt(argc, argv, "e:f:dlm:Nnp:RTt:x")) != -1) 131 switch (ch) { 132 case 'e': 133 emul_name = strdup(optarg); /* it's safer to copy it */ 134 break; 135 case 'f': 136 tracefile = optarg; 137 break; 138 case 'd': 139 decimal = 1; 140 break; 141 case 'l': 142 tail = 1; 143 break; 144 case 'p': 145 do_pid = atoi(optarg); 146 break; 147 case 'm': 148 maxdata = atoi(optarg); 149 break; 150 case 'N': 151 numeric++; 152 break; 153 case 'n': 154 plain++; 155 break; 156 case 'R': 157 timestamp = 2; /* relative timestamp */ 158 break; 159 case 'T': 160 timestamp = 1; 161 break; 162 case 't': 163 trset = 1; 164 trpoints = getpoints(trpoints, optarg); 165 if (trpoints < 0) 166 errx(1, "unknown trace point in %s", optarg); 167 break; 168 case 'x': 169 hexdump = 1; 170 break; 171 default: 172 usage(); 173 } 174 argv += optind; 175 argc -= optind; 176 177 if (!trset) 178 trpoints = ALL_POINTS; 179 180 if (tracefile == NULL) { 181 if (argc == 1) { 182 tracefile = argv[0]; 183 argv++; 184 argc--; 185 } 186 else 187 tracefile = DEF_TRACEFILE; 188 } 189 190 if (argc > 0) 191 usage(); 192 193 setemul(emul_name, 0, 0); 194 mach_lookup_emul(); 195 196 m = malloc(size = 1024); 197 if (m == NULL) 198 errx(1, "malloc: %s", strerror(ENOMEM)); 199 if (!freopen(tracefile, "r", stdin)) 200 err(1, "%s", tracefile); 201 while (fread_tail((char *)&ktr_header, sizeof(struct ktr_header), 1)) { 202 if (trpoints & (1<<ktr_header.ktr_type) 203 && (do_pid == -1 || ktr_header.ktr_pid == do_pid)) 204 col = dumpheader(&ktr_header); 205 else 206 col = -1; 207 if ((ktrlen = ktr_header.ktr_len) < 0) 208 errx(1, "bogus length 0x%x", ktrlen); 209 if (ktrlen > size) { 210 while (ktrlen > size) 211 size *= 2; 212 m = realloc(m, size); 213 if (m == NULL) 214 errx(1, "realloc: %s", strerror(ENOMEM)); 215 } 216 if (ktrlen && fread_tail(m, ktrlen, 1) == 0) 217 errx(1, "data too short"); 218 if (col == -1) 219 continue; 220 221 /* update context to match currently processed record */ 222 ectx_sanify(ktr_header.ktr_pid); 223 224 switch (ktr_header.ktr_type) { 225 case KTR_SYSCALL: 226 ktrsyscall(m); 227 break; 228 case KTR_SYSRET: 229 ktrsysret(m, ktrlen); 230 break; 231 case KTR_NAMEI: 232 ktrnamei(m, ktrlen); 233 break; 234 case KTR_GENIO: 235 ktrgenio(m, ktrlen); 236 break; 237 case KTR_PSIG: 238 ktrpsig(m, ktrlen); 239 break; 240 case KTR_CSW: 241 ktrcsw(m); 242 break; 243 case KTR_EMUL: 244 ktremul(m, ktrlen, size); 245 break; 246 case KTR_USER: 247 ktruser(m, ktrlen); 248 break; 249 case KTR_MMSG: 250 ktrmmsg(m, ktrlen); 251 break; 252 case KTR_EXEC_ARG: 253 case KTR_EXEC_ENV: 254 visdump_buf(m, ktrlen, col); 255 break; 256 default: 257 printf("\n"); 258 hexdump_buf(m, ktrlen); 259 } 260 if (tail) 261 (void)fflush(stdout); 262 } 263 return (0); 264 } 265 266 int 267 fread_tail(buf, size, num) 268 char *buf; 269 int num, size; 270 { 271 int i; 272 273 while ((i = fread(buf, size, num, stdin)) == 0 && tail) { 274 (void)sleep(1); 275 clearerr(stdin); 276 } 277 return (i); 278 } 279 280 int 281 dumpheader(kth) 282 struct ktr_header *kth; 283 { 284 char unknown[64], *type; 285 static struct timeval prevtime; 286 struct timeval temp; 287 int col; 288 289 switch (kth->ktr_type) { 290 case KTR_SYSCALL: 291 type = "CALL"; 292 break; 293 case KTR_SYSRET: 294 type = "RET "; 295 break; 296 case KTR_NAMEI: 297 type = "NAMI"; 298 break; 299 case KTR_GENIO: 300 type = "GIO "; 301 break; 302 case KTR_PSIG: 303 type = "PSIG"; 304 break; 305 case KTR_CSW: 306 type = "CSW "; 307 break; 308 case KTR_EMUL: 309 type = "EMUL"; 310 break; 311 case KTR_USER: 312 type = "USER"; 313 break; 314 case KTR_MMSG: 315 type = "MMSG"; 316 break; 317 case KTR_EXEC_ENV: 318 type = "ENV"; 319 break; 320 case KTR_EXEC_ARG: 321 type = "ARG"; 322 break; 323 default: 324 (void)sprintf(unknown, "UNKNOWN(%d)", kth->ktr_type); 325 type = unknown; 326 } 327 328 col = printf("%6d %-8.*s ", kth->ktr_pid, MAXCOMLEN, kth->ktr_comm); 329 if (timestamp) { 330 if (timestamp == 2) { 331 if (prevtime.tv_sec == 0) 332 temp.tv_sec = temp.tv_usec = 0; 333 else 334 timersub(&kth->ktr_time, &prevtime, &temp); 335 prevtime = kth->ktr_time; 336 } else 337 temp = kth->ktr_time; 338 col += printf("%ld.%06ld ", 339 (long int)temp.tv_sec, (long int)temp.tv_usec); 340 } 341 col += printf("%-4s ", type); 342 return col; 343 } 344 345 void 346 ioctldecode(cmd) 347 u_long cmd; 348 { 349 char dirbuf[4], *dir = dirbuf; 350 351 if (cmd & IOC_IN) 352 *dir++ = 'W'; 353 if (cmd & IOC_OUT) 354 *dir++ = 'R'; 355 *dir = '\0'; 356 357 printf(decimal ? ",_IO%s('%c',%ld" : ",_IO%s('%c',%#lx", 358 dirbuf, (int) ((cmd >> 8) & 0xff), cmd & 0xff); 359 if ((cmd & IOC_VOID) == 0) 360 printf(decimal ? ",%ld)" : ",%#lx)", (cmd >> 16) & 0xff); 361 else 362 printf(")"); 363 } 364 365 void 366 ktrsyscall(ktr) 367 struct ktr_syscall *ktr; 368 { 369 int argsize = ktr->ktr_argsize; 370 const struct emulation *revelant = current; 371 register_t *ap; 372 373 if (((ktr->ktr_code >= revelant->nsysnames || ktr->ktr_code < 0) 374 && (mach_traps_dispatch(&ktr->ktr_code, &revelant) == 0)) || 375 numeric) 376 (void)printf("[%d]", ktr->ktr_code); 377 else 378 (void)printf("%s", revelant->sysnames[ktr->ktr_code]); 379 ap = (register_t *)((char *)ktr + sizeof(struct ktr_syscall)); 380 if (argsize) { 381 char c = '('; 382 if (!plain) { 383 char *cp; 384 385 switch (ktr->ktr_code) { 386 case SYS_ioctl: 387 if (decimal) 388 (void)printf("(%ld", (long)*ap); 389 else 390 (void)printf("(%#lx", (long)*ap); 391 ap++; 392 argsize -= sizeof(register_t); 393 if ((cp = ioctlname(*ap)) != NULL) 394 (void)printf(",%s", cp); 395 else 396 ioctldecode(*ap); 397 c = ','; 398 ap++; 399 argsize -= sizeof(register_t); 400 break; 401 402 case SYS_ptrace: 403 if (strcmp(revelant->name, "linux") == 0) { 404 if (*ap >= 0 && *ap <= 405 sizeof(linux_ptrace_ops) / 406 sizeof(linux_ptrace_ops[0])) 407 (void)printf("(%s", 408 linux_ptrace_ops[*ap]); 409 else 410 (void)printf("(%ld", (long)*ap); 411 } else { 412 if (*ap >= 0 && *ap <= 413 sizeof(ptrace_ops) / sizeof(ptrace_ops[0])) 414 (void)printf("(%s", ptrace_ops[*ap]); 415 else 416 (void)printf("(%ld", (long)*ap); 417 } 418 c = ','; 419 ap++; 420 argsize -= sizeof(register_t); 421 break; 422 423 case SYS_kill: 424 if (decimal) 425 (void)printf("(%ld, SIG%s", 426 (long)ap[0], signame(ap[1], 1)); 427 else 428 (void)printf("(%#lx, SIG%s", 429 (long)ap[0], signame(ap[1], 1)); 430 ap += 2; 431 argsize -= 2 * sizeof(register_t); 432 break; 433 434 default: 435 /* No special handling */ 436 break; 437 } 438 } 439 while (argsize) { 440 if (decimal) 441 (void)printf("%c%ld", c, (long)*ap); 442 else 443 (void)printf("%c%#lx", c, (long)*ap); 444 c = ','; 445 ap++; 446 argsize -= sizeof(register_t); 447 } 448 (void)putchar(')'); 449 } 450 (void)putchar('\n'); 451 } 452 453 void 454 ktrsysret(ktr, len) 455 struct ktr_sysret *ktr; 456 int len; 457 { 458 const struct emulation *revelant; 459 int error = ktr->ktr_error; 460 int code = ktr->ktr_code; 461 462 if (emul_changed) 463 revelant = previous; 464 else 465 revelant = current; 466 emul_changed = 0; 467 468 if ((code >= revelant->nsysnames || code < 0 || plain > 1) 469 && (mach_traps_dispatch(&code, &revelant) == 0)) 470 (void)printf("[%d] ", code); 471 else 472 (void)printf("%s ", revelant->sysnames[code]); 473 474 switch (error) { 475 case 0: 476 rprint(ktr->ktr_retval); 477 if (len > offsetof(struct ktr_sysret, ktr_retval_1) && 478 ktr->ktr_retval_1 != 0) { 479 (void)printf(", "); 480 rprint(ktr->ktr_retval_1); 481 } 482 break; 483 484 default: 485 eprint(error); 486 break; 487 } 488 (void)putchar('\n'); 489 } 490 491 void 492 rprint(register_t ret) 493 { 494 if (!plain) { 495 (void)printf("%ld", (long)ret); 496 if (ret < 0 || ret > 9) 497 (void)printf("/%#lx", (long)ret); 498 } else { 499 if (decimal) 500 (void)printf("%ld", (long)ret); 501 else 502 (void)printf("%#lx", (long)ret); 503 } 504 } 505 506 /* 507 * We print the original emulation's error numerically, but we 508 * translate it to netbsd to print it symbolically. 509 */ 510 void 511 eprint(e) 512 int e; 513 { 514 int i = e; 515 516 if (current->errnomap) { 517 518 /* No remapping for ERESTART and EJUSTRETURN */ 519 /* Kludge for linux that has negative error numbers */ 520 if (current->errnomap[2] > 0 && e < 0) 521 goto normal; 522 523 for (i = 0; i < current->nerrnomap; i++) 524 if (e == current->errnomap[i]) 525 break; 526 527 if (i == current->nerrnomap) { 528 printf("-1 unknown errno %d", e); 529 return; 530 } 531 } 532 533 normal: 534 switch (i) { 535 case ERESTART: 536 (void)printf("RESTART"); 537 break; 538 539 case EJUSTRETURN: 540 (void)printf("JUSTRETURN"); 541 break; 542 543 default: 544 (void)printf("-1 errno %d", e); 545 if (!plain) 546 (void)printf(" %s", strerror(i)); 547 } 548 } 549 550 void 551 ktrnamei(cp, len) 552 char *cp; 553 int len; 554 { 555 556 (void)printf("\"%.*s\"\n", len, cp); 557 } 558 559 void 560 ktremul(name, len, bufsize) 561 char *name; 562 int len, bufsize; 563 { 564 if (len >= bufsize) 565 len = bufsize - 1; 566 567 name[len] = '\0'; 568 setemul(name, ktr_header.ktr_pid, 1); 569 emul_changed = 1; 570 571 (void)printf("\"%s\"\n", name); 572 } 573 574 static void 575 hexdump_buf(const void *vdp, int datalen) 576 { 577 char chars[16]; 578 const unsigned char *dp = vdp; 579 int line_end, off, l, c; 580 char *cp; 581 582 for (off = 0; off < datalen;) { 583 line_end = off + 16; 584 if (line_end > datalen) 585 line_end = datalen; 586 printf("\t%3.3x ", off); 587 for (l = 0, cp = chars; off < line_end; off++) { 588 c = *dp++; 589 if ((off & 7) == 0) 590 l += printf(" "); 591 l += printf(" %2.2x", c); 592 *cp++ = isgraph(c) ? c : '.'; 593 }; 594 printf("%*s %.*s\n", 50 - l, "", (int)(cp - chars), chars); 595 } 596 } 597 598 static void 599 visdump_buf(const void *vdp, int datalen, int col) 600 { 601 const unsigned char *dp = vdp; 602 char *cp; 603 int width; 604 char visbuf[5]; 605 static int screenwidth = 0; 606 607 if (screenwidth == 0) { 608 struct winsize ws; 609 610 if (!plain && ioctl(fileno(stderr), TIOCGWINSZ, &ws) != -1 && 611 ws.ws_col > 8) 612 screenwidth = ws.ws_col; 613 else 614 screenwidth = 80; 615 } 616 617 (void)printf("\""); 618 col++; 619 for (; datalen > 0; datalen--, dp++) { 620 (void)svis(visbuf, *dp, VIS_CSTYLE, 621 datalen > 1 ? *(dp + 1) : 0, "\""); 622 cp = visbuf; 623 /* 624 * Keep track of printables and 625 * space chars (like fold(1)). 626 */ 627 if (col == 0) { 628 (void)putchar('\t'); 629 col = 8; 630 } 631 switch(*cp) { 632 case '\n': 633 col = 0; 634 (void)putchar('\n'); 635 continue; 636 case '\t': 637 width = 8 - (col & 07); 638 break; 639 default: 640 width = strlen(cp); 641 } 642 if (col + width > (screenwidth - 2)) { 643 (void)printf("\\\n\t"); 644 col = 8; 645 } 646 col += width; 647 do { 648 (void)putchar(*cp++); 649 } while (*cp); 650 } 651 if (col == 0) 652 (void)printf(" "); 653 (void)printf("\"\n"); 654 } 655 656 void 657 ktrgenio(ktr, len) 658 struct ktr_genio *ktr; 659 int len; 660 { 661 int datalen = len - sizeof (struct ktr_genio); 662 char *dp = (char *)ktr + sizeof (struct ktr_genio); 663 664 printf("fd %d %s %d bytes\n", ktr->ktr_fd, 665 ktr->ktr_rw == UIO_READ ? "read" : "wrote", datalen); 666 if (maxdata == 0) 667 return; 668 if (maxdata > 0 && datalen > maxdata) 669 datalen = maxdata; 670 if (hexdump) { 671 hexdump_buf(dp, datalen); 672 return; 673 } 674 (void)printf(" "); 675 visdump_buf(dp, datalen, 7); 676 } 677 678 void 679 ktrpsig(v, len) 680 void *v; 681 int len; 682 { 683 int signo, first; 684 struct { 685 struct ktr_psig ps; 686 siginfo_t si; 687 } *psig = v; 688 siginfo_t *si = &psig->si; 689 const char *code; 690 691 (void)printf("SIG%s ", signame(psig->ps.signo, 0)); 692 if (psig->ps.action == SIG_DFL) 693 (void)printf("SIG_DFL"); 694 else { 695 (void)printf("caught handler=%p mask=(", psig->ps.action); 696 first = 1; 697 for (signo = 1; signo < NSIG; signo++) { 698 if (sigismember(&psig->ps.mask, signo)) { 699 if (first) 700 first = 0; 701 else 702 (void)printf(","); 703 (void)printf("%d", signo); 704 } 705 } 706 (void)printf(")"); 707 } 708 switch (len) { 709 case sizeof(struct ktr_psig): 710 printf("\n"); 711 return; 712 case sizeof(*psig): 713 if (si->si_code == 0) { 714 printf(": code=SI_USER sent by pid=%d, uid=%d\n", 715 si->si_pid, si->si_uid); 716 return; 717 } 718 719 if (si->si_code < 0) { 720 switch (si->si_code) { 721 case SI_TIMER: 722 printf(": code=SI_TIMER sigval %p\n", 723 si->si_sigval.sival_ptr); 724 return; 725 case SI_QUEUE: 726 code = "SI_QUEUE"; 727 break; 728 case SI_ASYNCIO: 729 code = "SI_ASYNCIO"; 730 break; 731 case SI_MESGQ: 732 code = "SI_MESGQ"; 733 break; 734 default: 735 code = NULL; 736 break; 737 } 738 if (code) 739 printf(": code=%s unimplemented\n", code); 740 else 741 printf(": code=%d unimplemented\n", 742 si->si_code); 743 return; 744 } 745 746 code = siginfocodename(si->si_signo, si->si_code); 747 switch (si->si_signo) { 748 case SIGCHLD: 749 printf(": code=%s child pid=%d, uid=%d, " 750 " status=%u, utime=%lu, stime=%lu\n", 751 code, si->si_pid, 752 si->si_uid, si->si_status, si->si_utime, 753 si->si_stime); 754 return; 755 case SIGILL: 756 case SIGFPE: 757 case SIGSEGV: 758 case SIGBUS: 759 case SIGTRAP: 760 printf(": code=%s, addr=%p, trap=%d\n", 761 code, si->si_addr, si->si_trap); 762 return; 763 case SIGIO: 764 printf(": code=%s, fd=%d, band=%lx\n", 765 code, si->si_fd, si->si_band); 766 return; 767 default: 768 printf(": code=%s, errno=%d\n", 769 code, si->si_errno); 770 return; 771 } 772 /*NOTREACHED*/ 773 default: 774 warnx("Unhandled size %d for ktrpsig\n", len); 775 break; 776 } 777 } 778 779 void 780 ktrcsw(cs) 781 struct ktr_csw *cs; 782 { 783 784 (void)printf("%s %s\n", cs->out ? "stop" : "resume", 785 cs->user ? "user" : "kernel"); 786 } 787 788 void 789 ktruser(usr, len) 790 struct ktr_user *usr; 791 int len; 792 { 793 int i; 794 unsigned char *dta; 795 796 printf("\"%.*s: %d, ", KTR_USER_MAXIDLEN, usr->ktr_id, len); 797 dta = (unsigned char *)usr; 798 for(i=sizeof(struct ktr_user); i < len; i++) 799 printf("%02x", (unsigned int) dta[i]); 800 printf("\"\n"); 801 } 802 803 void 804 ktrmmsg(mmsg, len) 805 struct ktr_mmsg *mmsg; 806 int len; 807 { 808 printf("id %d [0x%x -> 0x%x] flags 0x%x\n", 809 mmsg->ktr_id, mmsg->ktr_local_port, 810 mmsg->ktr_remote_port, mmsg->ktr_bits); 811 812 hexdump_buf(mmsg, len); 813 } 814 815 static const char * 816 signame(long sig, int xlat) 817 { 818 static char buf[64]; 819 if (sig == 0) 820 return " 0"; 821 else if (sig < 0 || sig >= NSIG) { 822 (void)snprintf(buf, sizeof(buf), "*unknown %ld*", sig); 823 return buf; 824 } else 825 return sys_signame[(xlat && current->signalmap != NULL) ? 826 current->signalmap[sig] : sig]; 827 } 828 829 void 830 usage() 831 { 832 833 (void)fprintf(stderr, "usage: kdump [-dlNnRTx] [-e emulation] " 834 "[-f file] [-m maxdata] [-p pid]\n [-t trstr] " 835 "[file]\n"); 836 exit(1); 837 } 838
Indexes created Sun Sep 21 19:09:51 GMT 2025