kdump.c revision 1.112
1 /* $NetBSD: kdump.c,v 1.112 2011/06/01 21:28:32 alnsn 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 1.112 2011/06/01 21:28:32 alnsn 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 58 #include <ctype.h> 59 #include <err.h> 60 #include <signal.h> 61 #include <stddef.h> 62 #include <stdio.h> 63 #include <stdlib.h> 64 #include <string.h> 65 #include <unistd.h> 66 #include <vis.h> 67 68 #include "ktrace.h" 69 #include "setemul.h" 70 71 #include <sys/syscall.h> 72 73 static int timestamp, decimal, plain, tail, maxdata = -1, numeric; 74 static int word_size = 0; 75 static pid_t do_pid = -1; 76 static const char *tracefile = NULL; 77 static struct ktr_header ktr_header; 78 static int emul_changed = 0; 79 80 #define eqs(s1, s2) (strcmp((s1), (s2)) == 0) 81 #define small(v) (((long)(v) >= 0) && ((long)(v) < 10)) 82 83 static const char * const ptrace_ops[] = { 84 "PT_TRACE_ME", "PT_READ_I", "PT_READ_D", "PT_READ_U", 85 "PT_WRITE_I", "PT_WRITE_D", "PT_WRITE_U", "PT_CONTINUE", 86 "PT_KILL", "PT_ATTACH", "PT_DETACH", "PT_IO", 87 "PT_DUMPCORE", "PT_LWPINFO", "PT_SYSCALL", 88 }; 89 90 #ifdef PT_MACHDEP_STRINGS 91 static const char * const ptrace_machdep_ops[] = { PT_MACHDEP_STRINGS }; 92 #endif 93 94 static const char * const linux_ptrace_ops[] = { 95 "PTRACE_TRACEME", 96 "PTRACE_PEEKTEXT", "PTRACE_PEEKDATA", "PTRACE_PEEKUSER", 97 "PTRACE_POKETEXT", "PTRACE_POKEDATA", "PTRACE_POKEUSER", 98 "PTRACE_CONT", "PTRACE_KILL", "PTRACE_SINGLESTEP", 99 NULL, NULL, 100 "PTRACE_GETREGS", "PTRACE_SETREGS", "PTRACE_GETFPREGS", 101 "PTRACE_SETFPREGS", "PTRACE_ATTACH", "PTRACE_DETACH", 102 NULL, NULL, NULL, NULL, NULL, NULL, 103 "PTRACE_SYSCALL", 104 }; 105 106 int main(int, char **); 107 static int fread_tail(void *, size_t, size_t); 108 static int dumpheader(struct ktr_header *); 109 static void output_long(u_long, int); 110 static void ioctldecode(u_long); 111 static void ktrsyscall(struct ktr_syscall *); 112 static void ktrsysret(struct ktr_sysret *, int); 113 static void ktrnamei(char *, int); 114 static void ktremul(char *, int, int); 115 static void ktrgenio(struct ktr_genio *, int); 116 static void ktrpsig(void *, int); 117 static void ktrcsw(struct ktr_csw *); 118 static void ktruser(struct ktr_user *, int); 119 static void ktrmib(int *, int); 120 static void ktrexecfd(struct ktr_execfd *); 121 static void usage(void) __dead; 122 static void eprint(int); 123 static void rprint(register_t); 124 static const char *signame(long, int); 125 static void hexdump_buf(const void *, int, int); 126 static void visdump_buf(const void *, int, int); 127 128 int 129 main(int argc, char **argv) 130 { 131 int ch, ktrlen, size; 132 void *m; 133 int trpoints = 0; 134 int trset = 0; 135 const char *emul_name = "netbsd"; 136 int col; 137 char *cp; 138 139 setprogname(argv[0]); 140 141 if (strcmp(getprogname(), "ioctlname") == 0) { 142 int i; 143 144 while ((ch = getopt(argc, argv, "e:")) != -1) 145 switch (ch) { 146 case 'e': 147 emul_name = optarg; 148 break; 149 default: 150 usage(); 151 break; 152 } 153 setemul(emul_name, 0, 0); 154 argv += optind; 155 argc -= optind; 156 157 if (argc < 1) 158 usage(); 159 160 for (i = 0; i < argc; i++) { 161 ioctldecode(strtoul(argv[i], NULL, 0)); 162 (void)putchar('\n'); 163 } 164 return 0; 165 } 166 167 while ((ch = getopt(argc, argv, "e:f:dlm:Nnp:RTt:xX:")) != -1) { 168 switch (ch) { 169 case 'e': 170 emul_name = strdup(optarg); /* it's safer to copy it */ 171 break; 172 case 'f': 173 tracefile = optarg; 174 break; 175 case 'd': 176 decimal = 1; 177 break; 178 case 'l': 179 tail = 1; 180 break; 181 case 'p': 182 do_pid = strtoul(optarg, &cp, 0); 183 if (*cp != 0) 184 errx(1,"invalid number %s", optarg); 185 break; 186 case 'm': 187 maxdata = strtoul(optarg, &cp, 0); 188 if (*cp != 0) 189 errx(1,"invalid number %s", optarg); 190 break; 191 case 'N': 192 numeric++; 193 break; 194 case 'n': 195 plain++; 196 break; 197 case 'R': 198 timestamp = 2; /* relative timestamp */ 199 break; 200 case 'T': 201 timestamp = 1; 202 break; 203 case 't': 204 trset = 1; 205 trpoints = getpoints(trpoints, optarg); 206 if (trpoints < 0) 207 errx(1, "unknown trace point in %s", optarg); 208 break; 209 case 'x': 210 word_size = 1; 211 break; 212 case 'X': 213 word_size = strtoul(optarg, &cp, 0); 214 if (*cp != 0 || word_size & (word_size - 1) || 215 word_size > 16 || word_size <= 0) 216 errx(1, "argument to -X must be " 217 "1, 2, 4, 8 or 16"); 218 break; 219 default: 220 usage(); 221 } 222 } 223 argv += optind; 224 argc -= optind; 225 226 if (!trset) 227 trpoints = ALL_POINTS; 228 229 if (tracefile == NULL) { 230 if (argc == 1) { 231 tracefile = argv[0]; 232 argv++; 233 argc--; 234 } else 235 tracefile = DEF_TRACEFILE; 236 } 237 238 if (argc > 0) 239 usage(); 240 241 setemul(emul_name, 0, 0); 242 243 m = malloc(size = 1024); 244 if (m == NULL) 245 errx(1, "malloc: %s", strerror(ENOMEM)); 246 if (!freopen(tracefile, "r", stdin)) 247 err(1, "%s", tracefile); 248 while (fread_tail(&ktr_header, sizeof(struct ktr_header), 1)) { 249 if (trpoints & (1 << ktr_header.ktr_type) && 250 (do_pid == -1 || ktr_header.ktr_pid == do_pid)) 251 col = dumpheader(&ktr_header); 252 else 253 col = -1; 254 if ((ktrlen = ktr_header.ktr_len) < 0) 255 errx(1, "bogus length 0x%x", ktrlen); 256 if (ktrlen > size) { 257 while (ktrlen > size) 258 size *= 2; 259 m = realloc(m, size); 260 if (m == NULL) 261 errx(1, "realloc: %s", strerror(ENOMEM)); 262 } 263 if (ktrlen && fread_tail(m, ktrlen, 1) == 0) 264 errx(1, "data too short"); 265 if (col == -1) 266 continue; 267 268 /* update context to match currently processed record */ 269 ectx_sanify(ktr_header.ktr_pid); 270 271 switch (ktr_header.ktr_type) { 272 case KTR_SYSCALL: 273 ktrsyscall(m); 274 break; 275 case KTR_SYSRET: 276 ktrsysret(m, ktrlen); 277 break; 278 case KTR_NAMEI: 279 ktrnamei(m, ktrlen); 280 break; 281 case KTR_GENIO: 282 ktrgenio(m, ktrlen); 283 break; 284 case KTR_PSIG: 285 ktrpsig(m, ktrlen); 286 break; 287 case KTR_CSW: 288 ktrcsw(m); 289 break; 290 case KTR_EMUL: 291 ktremul(m, ktrlen, size); 292 break; 293 case KTR_USER: 294 ktruser(m, ktrlen); 295 break; 296 case KTR_EXEC_ARG: 297 case KTR_EXEC_ENV: 298 visdump_buf(m, ktrlen, col); 299 break; 300 case KTR_EXEC_FD: 301 ktrexecfd(m); 302 break; 303 case KTR_MIB: 304 ktrmib(m, ktrlen); 305 break; 306 default: 307 putchar('\n'); 308 hexdump_buf(m, ktrlen, word_size ? word_size : 1); 309 } 310 if (tail) 311 (void)fflush(stdout); 312 } 313 return (0); 314 } 315 316 static int 317 fread_tail(void *buf, size_t num, size_t size) 318 { 319 int i; 320 321 while ((i = fread(buf, size, num, stdin)) == 0 && tail) { 322 (void)sleep(1); 323 clearerr(stdin); 324 } 325 return (i); 326 } 327 328 static int 329 dumpheader(struct ktr_header *kth) 330 { 331 char unknown[64]; 332 const char *type; 333 union holdtime { 334 struct timeval tv; 335 struct timespec ts; 336 }; 337 static union holdtime prevtime; 338 union holdtime temp; 339 int col; 340 341 switch (kth->ktr_type) { 342 case KTR_SYSCALL: 343 type = "CALL"; 344 break; 345 case KTR_SYSRET: 346 type = "RET "; 347 break; 348 case KTR_NAMEI: 349 type = "NAMI"; 350 break; 351 case KTR_GENIO: 352 type = "GIO "; 353 break; 354 case KTR_PSIG: 355 type = "PSIG"; 356 break; 357 case KTR_CSW: 358 type = "CSW "; 359 break; 360 case KTR_EMUL: 361 type = "EMUL"; 362 break; 363 case KTR_USER: 364 type = "MISC"; 365 break; 366 case KTR_EXEC_ENV: 367 type = "ENV"; 368 break; 369 case KTR_EXEC_ARG: 370 type = "ARG"; 371 break; 372 case KTR_EXEC_FD: 373 type = "FD"; 374 break; 375 case KTR_SAUPCALL: 376 type = "SAU"; 377 break; 378 case KTR_MIB: 379 type = "MIB"; 380 break; 381 default: 382 (void)snprintf(unknown, sizeof(unknown), "UNKNOWN(%d)", 383 kth->ktr_type); 384 type = unknown; 385 } 386 387 col = printf("%6d ", kth->ktr_pid); 388 if (kth->ktr_version > KTRFACv0) 389 col += printf("%6d ", kth->ktr_lid); 390 col += printf("%-8.*s ", MAXCOMLEN, kth->ktr_comm); 391 if (timestamp) { 392 (void)&prevtime; 393 if (timestamp == 2) { 394 switch (kth->ktr_version) { 395 case KTRFAC_VERSION(KTRFACv0): 396 if (prevtime.tv.tv_sec == 0) 397 temp.tv.tv_sec = temp.tv.tv_usec = 0; 398 else 399 timersub(&kth->ktr_otv, 400 &prevtime.tv, &temp.tv); 401 prevtime.tv.tv_sec = kth->ktr_otv.tv_sec; 402 prevtime.tv.tv_usec = kth->ktr_otv.tv_usec; 403 break; 404 case KTRFAC_VERSION(KTRFACv1): 405 if (prevtime.ts.tv_sec == 0) 406 temp.ts.tv_sec = temp.ts.tv_nsec = 0; 407 else 408 timespecsub(&kth->ktr_ots, 409 &prevtime.ts, &temp.ts); 410 prevtime.ts.tv_sec = kth->ktr_ots.tv_sec; 411 prevtime.ts.tv_nsec = kth->ktr_ots.tv_nsec; 412 break; 413 case KTRFAC_VERSION(KTRFACv2): 414 if (prevtime.ts.tv_sec == 0) 415 temp.ts.tv_sec = temp.ts.tv_nsec = 0; 416 else 417 timespecsub(&kth->ktr_ts, 418 &prevtime.ts, &temp.ts); 419 prevtime.ts.tv_sec = kth->ktr_ts.tv_sec; 420 prevtime.ts.tv_nsec = kth->ktr_ts.tv_nsec; 421 break; 422 default: 423 goto badversion; 424 } 425 } else { 426 switch (kth->ktr_version) { 427 case KTRFAC_VERSION(KTRFACv0): 428 temp.tv.tv_sec = kth->ktr_otv.tv_sec; 429 temp.tv.tv_usec = kth->ktr_otv.tv_usec; 430 break; 431 case KTRFAC_VERSION(KTRFACv1): 432 temp.ts.tv_sec = kth->ktr_ots.tv_sec; 433 temp.ts.tv_nsec = kth->ktr_ots.tv_nsec; 434 break; 435 case KTRFAC_VERSION(KTRFACv2): 436 temp.ts.tv_sec = kth->ktr_ts.tv_sec; 437 temp.ts.tv_nsec = kth->ktr_ts.tv_nsec; 438 break; 439 default: 440 badversion: 441 err(1, "Unsupported ktrace version %x\n", 442 kth->ktr_version); 443 } 444 } 445 if (kth->ktr_version == KTRFACv0) 446 col += printf("%lld.%06ld ", 447 (long long)temp.tv.tv_sec, (long)temp.tv.tv_usec); 448 else 449 col += printf("%lld.%09ld ", 450 (long long)temp.ts.tv_sec, (long)temp.ts.tv_nsec); 451 } 452 col += printf("%-4s ", type); 453 return col; 454 } 455 456 static void 457 output_long(u_long it, int as_x) 458 { 459 if (cur_emul->flags & EMUL_FLAG_NETBSD32) 460 printf(as_x ? "%#x" : "%d", (u_int)it); 461 else 462 printf(as_x ? "%#lx" : "%ld", it); 463 } 464 465 static void 466 ioctldecode(u_long cmd) 467 { 468 char dirbuf[4], *dir = dirbuf; 469 int c; 470 471 if (cmd & IOC_IN) 472 *dir++ = 'W'; 473 if (cmd & IOC_OUT) 474 *dir++ = 'R'; 475 *dir = '\0'; 476 477 c = (cmd >> 8) & 0xff; 478 if (isprint(c)) 479 printf("_IO%s('%c',", dirbuf, c); 480 else 481 printf("_IO%s(0x%02x,", dirbuf, c); 482 output_long(cmd & 0xff, decimal == 0); 483 if ((cmd & IOC_VOID) == 0) { 484 putchar(','); 485 output_long(IOCPARM_LEN(cmd), decimal == 0); 486 } 487 putchar(')'); 488 } 489 490 static void 491 ktrsyscall(struct ktr_syscall *ktr) 492 { 493 int argcount; 494 const struct emulation *emul = cur_emul; 495 register_t *ap; 496 char c; 497 const char *cp; 498 const char *sys_name; 499 500 argcount = ktr->ktr_argsize / sizeof (*ap); 501 502 emul_changed = 0; 503 504 if (numeric || 505 ((ktr->ktr_code >= emul->nsysnames || ktr->ktr_code < 0))) { 506 sys_name = "?"; 507 (void)printf("[%d]", ktr->ktr_code); 508 } else { 509 sys_name = emul->sysnames[ktr->ktr_code]; 510 (void)printf("%s", sys_name); 511 } 512 #ifdef _LP64 513 #define NETBSD32_ "netbsd32_" 514 if (cur_emul->flags & EMUL_FLAG_NETBSD32) { 515 size_t len = strlen(NETBSD32_); 516 if (strncmp(sys_name, NETBSD32_, len) == 0) 517 sys_name += len; 518 } 519 #undef NETBSD32_ 520 #endif 521 522 ap = (register_t *)((char *)ktr + sizeof(struct ktr_syscall)); 523 if (argcount) { 524 c = '('; 525 if (plain) { 526 ; 527 528 } else if (strcmp(sys_name, "exit_group") == 0 || 529 (strcmp(emul->name, "linux") != 0 && 530 strcmp(emul->name, "linux32") != 0 && 531 strcmp(sys_name, "exit") == 0)) { 532 ectx_delete(); 533 534 } else if (strcmp(sys_name, "ioctl") == 0 && argcount >= 2) { 535 (void)putchar('('); 536 output_long((long)*ap, !(decimal || small(*ap))); 537 ap++; 538 argcount--; 539 if ((cp = ioctlname(*ap)) != NULL) 540 (void)printf(",%s", cp); 541 else { 542 (void)putchar(','); 543 ioctldecode(*ap); 544 } 545 ap++; 546 argcount--; 547 c = ','; 548 549 } else if ((strstr(sys_name, "sigaction") != NULL || 550 strstr(sys_name, "sigvec") != NULL) && argcount >= 1) { 551 (void)printf("(SIG%s", signame(ap[0], 1)); 552 ap += 1; 553 argcount -= 1; 554 c = ','; 555 556 } else if ((strcmp(sys_name, "kill") == 0 || 557 strcmp(sys_name, "killpg") == 0) && argcount >= 2) { 558 putchar('('); 559 output_long((long)ap[0], !(decimal || small(*ap))); 560 (void)printf(", SIG%s", signame(ap[1], 1)); 561 ap += 2; 562 argcount -= 2; 563 c = ','; 564 565 } else if (strcmp(sys_name, "ptrace") == 0 && argcount >= 1) { 566 putchar('('); 567 if (strcmp(emul->name, "linux") == 0 || 568 strcmp(emul->name, "linux32") == 0) { 569 if ((long)*ap >= 0 && *ap < 570 (register_t)(sizeof(linux_ptrace_ops) / 571 sizeof(linux_ptrace_ops[0]))) 572 (void)printf("%s", 573 linux_ptrace_ops[*ap]); 574 else 575 output_long((long)*ap, 1); 576 } else { 577 if ((long)*ap >= 0 && *ap < 578 (register_t)(sizeof(ptrace_ops) / sizeof(ptrace_ops[0]))) 579 (void)printf("%s", ptrace_ops[*ap]); 580 #ifdef PT_MACHDEP_STRINGS 581 else if (*ap >= PT_FIRSTMACH && 582 *ap - PT_FIRSTMACH < 583 (register_t)(sizeof(ptrace_machdep_ops) / 584 sizeof(ptrace_machdep_ops[0]))) 585 (void)printf("%s", ptrace_machdep_ops[*ap - PT_FIRSTMACH]); 586 #endif 587 else 588 output_long((long)*ap, 1); 589 } 590 ap++; 591 argcount--; 592 c = ','; 593 594 } 595 while (argcount > 0) { 596 putchar(c); 597 output_long((long)*ap, !(decimal || small(*ap))); 598 ap++; 599 argcount--; 600 c = ','; 601 } 602 (void)putchar(')'); 603 } 604 (void)putchar('\n'); 605 } 606 607 static void 608 ktrsysret(struct ktr_sysret *ktr, int len) 609 { 610 const struct emulation *emul; 611 int error = ktr->ktr_error; 612 int code = ktr->ktr_code; 613 614 if (emul_changed) { 615 /* In order to get system call name right in execve return */ 616 emul = prev_emul; 617 emul_changed = 0; 618 } else 619 emul = cur_emul; 620 621 if (numeric || ((code >= emul->nsysnames || code < 0 || plain > 1))) 622 (void)printf("[%d] ", code); 623 else 624 (void)printf("%s ", emul->sysnames[code]); 625 626 switch (error) { 627 case 0: 628 rprint(ktr->ktr_retval); 629 if (len > (int)offsetof(struct ktr_sysret, ktr_retval_1) && 630 ktr->ktr_retval_1 != 0) { 631 (void)printf(", "); 632 rprint(ktr->ktr_retval_1); 633 } 634 break; 635 636 default: 637 eprint(error); 638 break; 639 } 640 (void)putchar('\n'); 641 } 642 643 static void 644 ktrexecfd(struct ktr_execfd *ktr) 645 { 646 static const char *dnames[] = { DTYPE_NAMES }; 647 if (ktr->ktr_dtype < __arraycount(dnames)) 648 printf("%s %d\n", dnames[ktr->ktr_dtype], ktr->ktr_fd); 649 else 650 printf("UNKNOWN(%u) %d\n", ktr->ktr_dtype, ktr->ktr_fd); 651 } 652 653 static void 654 rprint(register_t ret) 655 { 656 657 if (!plain) { 658 (void)printf("%ld", (long)ret); 659 if (!small(ret)) 660 (void)printf("/%#lx", (long)ret); 661 } else { 662 if (decimal || small(ret)) 663 (void)printf("%ld", (long)ret); 664 else 665 (void)printf("%#lx", (long)ret); 666 } 667 } 668 669 /* 670 * We print the original emulation's error numerically, but we 671 * translate it to netbsd to print it symbolically. 672 */ 673 static void 674 eprint(int e) 675 { 676 int i = e; 677 678 if (cur_emul->errnomap) { 679 680 /* No remapping for ERESTART and EJUSTRETURN */ 681 /* Kludge for linux that has negative error numbers */ 682 if (cur_emul->errnomap[2] > 0 && e < 0) 683 goto normal; 684 685 for (i = 0; i < cur_emul->nerrnomap; i++) 686 if (e == cur_emul->errnomap[i]) 687 break; 688 689 if (i == cur_emul->nerrnomap) { 690 printf("-1 unknown errno %d", e); 691 return; 692 } 693 } 694 695 normal: 696 switch (i) { 697 case ERESTART: 698 (void)printf("RESTART"); 699 break; 700 701 case EJUSTRETURN: 702 (void)printf("JUSTRETURN"); 703 break; 704 705 default: 706 (void)printf("-1 errno %d", e); 707 if (!plain) 708 (void)printf(" %s", strerror(i)); 709 } 710 } 711 712 static void 713 ktrnamei(char *cp, int len) 714 { 715 716 (void)printf("\"%.*s\"\n", len, cp); 717 } 718 719 static void 720 ktremul(char *name, int len, int bufsize) 721 { 722 723 if (len >= bufsize) 724 len = bufsize - 1; 725 726 name[len] = '\0'; 727 setemul(name, ktr_header.ktr_pid, 1); 728 emul_changed = 1; 729 730 (void)printf("\"%s\"\n", name); 731 } 732 733 static void 734 hexdump_buf(const void *vdp, int datalen, int word_sz) 735 { 736 const char hex[] = "0123456789abcdef"; 737 char chars[16], prev[16]; 738 char bytes[16 * 3 + 4]; 739 const unsigned char *dp = vdp; 740 const unsigned char *datalim = dp + datalen; 741 const unsigned char *line_end; 742 int off, l = 0, c; 743 char *cp, *bp; 744 int divmask = word_sz - 1; /* block size in bytes */ 745 int gdelim = 3; /* gap between blocks */ 746 int bsize = 2; /* increment for each byte */ 747 int width; 748 int dupl = 0; 749 #if _BYTE_ORDER == _LITTLE_ENDIAN 750 int bswap = word_sz - 1; 751 #else 752 #define bswap 0 753 #endif 754 755 switch (word_sz) { 756 case 2: 757 gdelim = 2; 758 break; 759 case 1: 760 divmask = 7; 761 bsize = 3; 762 gdelim = 1; 763 break; 764 default: 765 break; 766 } 767 width = 16 * bsize + (16 / (divmask + 1)) * gdelim; 768 if (word_sz != 1) 769 width += 2; 770 771 for (off = 0; dp < datalim; off += l) { 772 memset(bytes, ' ', sizeof bytes); 773 line_end = dp + 16; 774 if (line_end >= datalim) { 775 line_end = datalim; 776 dupl |= 1; /* need to print */ 777 } else { 778 if (dupl == 0 || memcmp(dp, prev, sizeof chars)) 779 dupl |= 1; 780 } 781 782 if (!(dupl & 1)) { 783 /* This is a duplicate of the line above, count 'em */ 784 dupl += 2; 785 dp = line_end; 786 continue; 787 } 788 789 if (dupl > 3) { 790 /* previous line as a duplicate */ 791 if (dupl == 5) 792 /* Only one duplicate, print line */ 793 printf("\t%-5.3x%.*s%.*s\n", 794 off - l, width, bytes, l, chars); 795 else 796 printf("\t%.*s\n", 797 snprintf(NULL, 0, "%3x", off), "*****"); 798 } 799 800 for (l = 0, bp = bytes, cp = chars; dp < line_end; l++) { 801 c = *dp++; 802 prev[l] = c; 803 if ((l & divmask) == 0) 804 bp += gdelim; 805 bp[(l ^ bswap) * bsize] = hex[c >> 4]; 806 bp[(l ^ bswap) * bsize + 1] = hex[c & 0xf]; 807 *cp++ = isgraph(c) ? c : '.'; 808 } 809 810 printf("\t%-5.3x%.*s%.*s\n", off, width, bytes, l, chars); 811 dupl = 2; 812 } 813 } 814 815 static void 816 visdump_buf(const void *vdp, int datalen, int col) 817 { 818 const unsigned char *dp = vdp; 819 char *cp; 820 int width; 821 char visbuf[5]; 822 static int screenwidth = 0; 823 824 if (screenwidth == 0) { 825 struct winsize ws; 826 827 if (!plain && ioctl(fileno(stderr), TIOCGWINSZ, &ws) != -1 && 828 ws.ws_col > 8) 829 screenwidth = ws.ws_col; 830 else 831 screenwidth = 80; 832 } 833 834 (void)printf("\""); 835 col++; 836 for (; datalen > 0; datalen--, dp++) { 837 (void)svis(visbuf, *dp, VIS_CSTYLE, 838 datalen > 1 ? *(dp + 1) : 0, "\"\n"); 839 cp = visbuf; 840 /* 841 * Keep track of printables and 842 * space chars (like fold(1)). 843 */ 844 if (col == 0) { 845 (void)putchar('\t'); 846 col = 8; 847 } 848 switch (*cp) { 849 case '\n': 850 col = 0; 851 (void)putchar('\n'); 852 continue; 853 case '\t': 854 width = 8 - (col & 07); 855 break; 856 default: 857 width = strlen(cp); 858 } 859 if (col + width > (screenwidth - 2)) { 860 (void)printf("\\\n\t"); 861 col = 8; 862 if (*cp == '\t') 863 width = 8; 864 } 865 col += width; 866 do { 867 (void)putchar(*cp++); 868 } while (*cp); 869 } 870 if (col == 0) 871 (void)printf(" "); 872 (void)printf("\"\n"); 873 } 874 875 static void 876 ktrgenio(struct ktr_genio *ktr, int len) 877 { 878 int datalen = len - sizeof (struct ktr_genio); 879 char *dp = (char *)ktr + sizeof (struct ktr_genio); 880 881 if (ktr->ktr_fd != -1) 882 printf("fd %d ", ktr->ktr_fd); 883 printf("%s %d bytes\n", 884 ktr->ktr_rw == UIO_READ ? "read" : "wrote", datalen); 885 if (maxdata == 0) 886 return; 887 if (maxdata > 0 && datalen > maxdata) 888 datalen = maxdata; 889 if (word_size) { 890 hexdump_buf(dp, datalen, word_size); 891 return; 892 } 893 (void)printf(" "); 894 visdump_buf(dp, datalen, 7); 895 } 896 897 static void 898 ktrpsig(void *v, int len) 899 { 900 int signo, first; 901 struct { 902 struct ktr_psig ps; 903 siginfo_t si; 904 } *psig = v; 905 siginfo_t *si = &psig->si; 906 const char *code; 907 908 (void)printf("SIG%s ", signame(psig->ps.signo, 0)); 909 if (psig->ps.action == SIG_DFL) 910 (void)printf("SIG_DFL"); 911 else { 912 (void)printf("caught handler=%p mask=(", psig->ps.action); 913 first = 1; 914 for (signo = 1; signo < NSIG; signo++) { 915 if (sigismember(&psig->ps.mask, signo)) { 916 if (first) 917 first = 0; 918 else 919 (void)printf(","); 920 (void)printf("%d", signo); 921 } 922 } 923 (void)printf(")"); 924 } 925 switch (len) { 926 case sizeof(struct ktr_psig): 927 if (psig->ps.code) 928 printf(" code=0x%x", psig->ps.code); 929 printf(psig->ps.action == SIG_DFL ? "\n" : ")\n"); 930 return; 931 case sizeof(*psig): 932 if (si->si_code == 0) { 933 printf(": code=SI_USER sent by pid=%d, uid=%d)\n", 934 si->si_pid, si->si_uid); 935 return; 936 } 937 938 if (si->si_code < 0) { 939 switch (si->si_code) { 940 case SI_TIMER: 941 case SI_QUEUE: 942 printf(": code=%s sent by pid=%d, uid=%d with " 943 "sigval %p)\n", si->si_code == SI_TIMER ? 944 "SI_TIMER" : "SI_QUEUE", si->si_pid, 945 si->si_uid, si->si_value.sival_ptr); 946 return; 947 case SI_ASYNCIO: 948 case SI_MESGQ: 949 printf(": code=%s with sigval %p)\n", 950 si->si_code == SI_ASYNCIO ? 951 "SI_ASYNCIO" : "SI_MESGQ", 952 si->si_value.sival_ptr); 953 return; 954 case SI_LWP: 955 printf(": code=SI_LWP sent by pid=%d, " 956 "uid=%d)\n", si->si_pid, si->si_uid); 957 return; 958 default: 959 code = NULL; 960 break; 961 } 962 if (code) 963 printf(": code=%s unimplemented)\n", code); 964 else 965 printf(": code=%d unimplemented)\n", 966 si->si_code); 967 return; 968 } 969 970 if (si->si_code == SI_NOINFO) { 971 printf(": code=SI_NOINFO\n"); 972 return; 973 } 974 975 code = siginfocodename(si->si_signo, si->si_code); 976 switch (si->si_signo) { 977 case SIGCHLD: 978 printf(": code=%s child pid=%d, uid=%d, " 979 " status=%u, utime=%lu, stime=%lu)\n", 980 code, si->si_pid, 981 si->si_uid, si->si_status, 982 (unsigned long) si->si_utime, 983 (unsigned long) si->si_stime); 984 return; 985 case SIGILL: 986 case SIGFPE: 987 case SIGSEGV: 988 case SIGBUS: 989 case SIGTRAP: 990 printf(": code=%s, addr=%p, trap=%d)\n", 991 code, si->si_addr, si->si_trap); 992 return; 993 case SIGIO: 994 printf(": code=%s, fd=%d, band=%lx)\n", 995 code, si->si_fd, si->si_band); 996 return; 997 default: 998 printf(": code=%s, errno=%d)\n", 999 code, si->si_errno); 1000 return; 1001 } 1002 /*NOTREACHED*/ 1003 default: 1004 warnx("Unhandled size %d for ktrpsig\n", len); 1005 break; 1006 } 1007 } 1008 1009 static void 1010 ktrcsw(struct ktr_csw *cs) 1011 { 1012 1013 (void)printf("%s %s\n", cs->out ? "stop" : "resume", 1014 cs->user ? "user" : "kernel"); 1015 } 1016 1017 static void 1018 ktruser(struct ktr_user *usr, int len) 1019 { 1020 int i; 1021 unsigned char *dta; 1022 1023 len -= sizeof(struct ktr_user); 1024 printf("%.*s:", KTR_USER_MAXIDLEN, usr->ktr_id); 1025 dta = (unsigned char *)(usr + 1); 1026 if (word_size) { 1027 printf("\n"); 1028 hexdump_buf(dta, len, word_size); 1029 return; 1030 } 1031 printf(" %d, ", len); 1032 for (i = 0; i < len; i++) 1033 printf("%02x", (unsigned int) dta[i]); 1034 printf("\n"); 1035 } 1036 1037 static void 1038 ktrmib(int *namep, int len) 1039 { 1040 size_t i; 1041 1042 for (i = 0; i < (len / sizeof(*namep)); i++) 1043 printf("%s%d", (i == 0) ? "" : ".", namep[i]); 1044 printf("\n"); 1045 } 1046 1047 static const char * 1048 signame(long sig, int xlat) 1049 { 1050 static char buf[64]; 1051 1052 if (sig == 0) 1053 return " 0"; 1054 else if (sig < 0 || sig >= NSIG) { 1055 (void)snprintf(buf, sizeof(buf), "*unknown %ld*", sig); 1056 return buf; 1057 } else 1058 return sys_signame[(xlat && cur_emul->signalmap != NULL) ? 1059 cur_emul->signalmap[sig] : sig]; 1060 } 1061 1062 static void 1063 usage(void) 1064 { 1065 if (strcmp(getprogname(), "ioctlname") == 0) { 1066 (void)fprintf(stderr, "Usage: %s [-e emulation] <ioctl> ...\n", 1067 getprogname()); 1068 } else { 1069 (void)fprintf(stderr, "Usage: %s [-dlNnRT] [-e emulation] " 1070 "[-f file] [-m maxdata] [-p pid]\n [-t trstr] " 1071 "[-x | -X size] [file]\n", getprogname()); 1072 } 1073 exit(1); 1074 } 1075
Indexes created Mon Sep 22 10:09:38 GMT 2025