kdump.c revision 1.129
1 /* $NetBSD: kdump.c,v 1.129 2017/09/10 10:09:40 wiz 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 1.129 2017/09/10 10:09:40 wiz Exp $"); 43 #endif 44 #endif /* not lint */ 45 46 #include <sys/param.h> 47 #include <sys/file.h> 48 #define _KMEMUSER /* To get the pseudo errors defined */ 49 #include <sys/errno.h> 50 #undef _KMEMUSER 51 #include <sys/mman.h> 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 #define TIMESTAMP_NONE 0x0 76 #define TIMESTAMP_ABSOLUTE 0x1 77 #define TIMESTAMP_ELAPSED 0x2 78 #define TIMESTAMP_RELATIVE 0x4 79 80 static int timestamp, decimal, plain, tail, maxdata = -1, numeric; 81 static int word_size = 0; 82 static pid_t do_pid = -1; 83 static const char *tracefile = NULL; 84 static struct ktr_header ktr_header; 85 static int emul_changed = 0; 86 87 #define eqs(s1, s2) (strcmp((s1), (s2)) == 0) 88 #define small(v) (((long)(v) >= 0) && ((long)(v) < 10)) 89 90 static const char * const ptrace_ops[] = { 91 PT_STRINGS 92 }; 93 94 #ifdef PT_MACHDEP_STRINGS 95 static const char * const ptrace_machdep_ops[] = { PT_MACHDEP_STRINGS }; 96 #endif 97 98 static const char * const linux_ptrace_ops[] = { 99 "PTRACE_TRACEME", 100 "PTRACE_PEEKTEXT", "PTRACE_PEEKDATA", "PTRACE_PEEKUSER", 101 "PTRACE_POKETEXT", "PTRACE_POKEDATA", "PTRACE_POKEUSER", 102 "PTRACE_CONT", "PTRACE_KILL", "PTRACE_SINGLESTEP", 103 NULL, NULL, 104 "PTRACE_GETREGS", "PTRACE_SETREGS", "PTRACE_GETFPREGS", 105 "PTRACE_SETFPREGS", "PTRACE_ATTACH", "PTRACE_DETACH", 106 NULL, NULL, NULL, NULL, NULL, NULL, 107 "PTRACE_SYSCALL", 108 }; 109 110 static int fread_tail(void *, size_t, size_t); 111 static int dumpheader(struct ktr_header *); 112 static int output_ts(const struct timespec *); 113 static void output_long(u_long, int); 114 static void ioctldecode(u_long); 115 static void ktrsyscall(struct ktr_syscall *); 116 static void ktrsysret(struct ktr_sysret *, int); 117 static void ktrnamei(char *, int); 118 static void ktremul(char *, size_t, size_t); 119 static void ktrgenio(struct ktr_genio *, int); 120 static void ktrpsig(void *, int); 121 static void ktrcsw(struct ktr_csw *); 122 static void ktruser(struct ktr_user *, int); 123 static void ktrmib(int *, int); 124 static void ktrexecfd(struct ktr_execfd *); 125 static void usage(void) __dead; 126 static void eprint(int); 127 static void rprint(register_t); 128 static const char *signame(long, int); 129 static void hexdump_buf(const void *, int, int); 130 static void visdump_buf(const void *, int, int); 131 132 int 133 main(int argc, char **argv) 134 { 135 unsigned int ktrlen, size; 136 int ch; 137 void *m; 138 int trpoints = 0; 139 int trset = 0; 140 const char *emul_name = "netbsd"; 141 int col; 142 char *cp; 143 144 setprogname(argv[0]); 145 146 if (strcmp(getprogname(), "ioctlname") == 0) { 147 int i; 148 149 while ((ch = getopt(argc, argv, "e:")) != -1) 150 switch (ch) { 151 case 'e': 152 emul_name = optarg; 153 break; 154 default: 155 usage(); 156 break; 157 } 158 setemul(emul_name, 0, 0); 159 argv += optind; 160 argc -= optind; 161 162 if (argc < 1) 163 usage(); 164 165 for (i = 0; i < argc; i++) { 166 ioctldecode(strtoul(argv[i], NULL, 0)); 167 (void)putchar('\n'); 168 } 169 return 0; 170 } 171 172 timestamp = TIMESTAMP_NONE; 173 174 while ((ch = getopt(argc, argv, "Ee:f:dlm:Nnp:RTt:xX:")) != -1) { 175 switch (ch) { 176 case 'E': 177 timestamp |= TIMESTAMP_ELAPSED; 178 break; 179 case 'e': 180 emul_name = strdup(optarg); /* it's safer to copy it */ 181 break; 182 case 'f': 183 tracefile = optarg; 184 break; 185 case 'd': 186 decimal = 1; 187 break; 188 case 'l': 189 tail = 1; 190 break; 191 case 'p': 192 do_pid = strtoul(optarg, &cp, 0); 193 if (*cp != 0) 194 errx(1,"invalid number %s", optarg); 195 break; 196 case 'm': 197 maxdata = strtoul(optarg, &cp, 0); 198 if (*cp != 0) 199 errx(1,"invalid number %s", optarg); 200 break; 201 case 'N': 202 numeric++; 203 break; 204 case 'n': 205 plain++; 206 break; 207 case 'R': 208 timestamp |= TIMESTAMP_RELATIVE; 209 break; 210 case 'T': 211 timestamp |= TIMESTAMP_ABSOLUTE; 212 break; 213 case 't': 214 trset = 1; 215 trpoints = getpoints(trpoints, optarg); 216 if (trpoints < 0) 217 errx(1, "unknown trace point in %s", optarg); 218 break; 219 case 'x': 220 word_size = 1; 221 break; 222 case 'X': 223 word_size = strtoul(optarg, &cp, 0); 224 if (*cp != 0 || word_size & (word_size - 1) || 225 word_size > 16 || word_size <= 0) 226 errx(1, "argument to -X must be " 227 "1, 2, 4, 8 or 16"); 228 break; 229 default: 230 usage(); 231 } 232 } 233 argv += optind; 234 argc -= optind; 235 236 if (!trset) 237 trpoints = ALL_POINTS; 238 239 if (tracefile == NULL) { 240 if (argc == 1) { 241 tracefile = argv[0]; 242 argv++; 243 argc--; 244 } else 245 tracefile = DEF_TRACEFILE; 246 } 247 248 if (argc > 0) 249 usage(); 250 251 setemul(emul_name, 0, 0); 252 253 m = malloc(size = 1024); 254 if (m == NULL) 255 errx(1, "malloc: %s", strerror(ENOMEM)); 256 if (!freopen(tracefile, "r", stdin)) 257 err(1, "%s", tracefile); 258 while (fread_tail(&ktr_header, sizeof(struct ktr_header), 1)) { 259 if (trpoints & (1 << ktr_header.ktr_type) && 260 (do_pid == -1 || ktr_header.ktr_pid == do_pid)) 261 col = dumpheader(&ktr_header); 262 else 263 col = -1; 264 if ((ktrlen = ktr_header.ktr_len) > INT_MAX) 265 errx(1, "bogus length 0x%x", ktrlen); 266 if (ktrlen > size) { 267 while (ktrlen > size) 268 size *= 2; 269 m = realloc(m, size); 270 if (m == NULL) 271 errx(1, "realloc: %s", strerror(ENOMEM)); 272 } 273 if (ktrlen && fread_tail(m, ktrlen, 1) == 0) 274 errx(1, "data too short"); 275 if (col == -1) 276 continue; 277 278 /* update context to match currently processed record */ 279 ectx_sanify(ktr_header.ktr_pid); 280 281 switch (ktr_header.ktr_type) { 282 case KTR_SYSCALL: 283 ktrsyscall(m); 284 break; 285 case KTR_SYSRET: 286 ktrsysret(m, ktrlen); 287 break; 288 case KTR_NAMEI: 289 ktrnamei(m, ktrlen); 290 break; 291 case KTR_GENIO: 292 ktrgenio(m, ktrlen); 293 break; 294 case KTR_PSIG: 295 ktrpsig(m, ktrlen); 296 break; 297 case KTR_CSW: 298 ktrcsw(m); 299 break; 300 case KTR_EMUL: 301 ktremul(m, ktrlen, size); 302 break; 303 case KTR_USER: 304 ktruser(m, ktrlen); 305 break; 306 case KTR_EXEC_ARG: 307 case KTR_EXEC_ENV: 308 visdump_buf(m, ktrlen, col); 309 break; 310 case KTR_EXEC_FD: 311 ktrexecfd(m); 312 break; 313 case KTR_MIB: 314 ktrmib(m, ktrlen); 315 break; 316 default: 317 putchar('\n'); 318 hexdump_buf(m, ktrlen, word_size ? word_size : 1); 319 } 320 if (tail) 321 (void)fflush(stdout); 322 } 323 return (0); 324 } 325 326 static int 327 fread_tail(void *buf, size_t num, size_t size) 328 { 329 int i; 330 331 while ((i = fread(buf, size, num, stdin)) == 0 && tail) { 332 (void)sleep(1); 333 clearerr(stdin); 334 } 335 return (i); 336 } 337 338 static int 339 dumpheader(struct ktr_header *kth) 340 { 341 char unknown[64]; 342 const char *type; 343 static struct timespec starttime, prevtime; 344 struct timespec temp; 345 int col; 346 347 if (__predict_false(kth->ktr_version != KTRFAC_VERSION(KTRFACv2))) 348 errx(EXIT_FAILURE, "Unsupported ktrace version %x", 349 kth->ktr_version); 350 351 switch (kth->ktr_type) { 352 case KTR_SYSCALL: 353 type = "CALL"; 354 break; 355 case KTR_SYSRET: 356 type = "RET "; 357 break; 358 case KTR_NAMEI: 359 type = "NAMI"; 360 break; 361 case KTR_GENIO: 362 type = "GIO "; 363 break; 364 case KTR_PSIG: 365 type = "PSIG"; 366 break; 367 case KTR_CSW: 368 type = "CSW "; 369 break; 370 case KTR_EMUL: 371 type = "EMUL"; 372 break; 373 case KTR_USER: 374 type = "MISC"; 375 break; 376 case KTR_EXEC_ENV: 377 type = "ENV"; 378 break; 379 case KTR_EXEC_ARG: 380 type = "ARG"; 381 break; 382 case KTR_EXEC_FD: 383 type = "FD"; 384 break; 385 case KTR_SAUPCALL: 386 type = "SAU"; 387 break; 388 case KTR_MIB: 389 type = "MIB"; 390 break; 391 default: 392 (void)snprintf(unknown, sizeof(unknown), "UNKNOWN(%d)", 393 kth->ktr_type); 394 type = unknown; 395 } 396 397 col = printf("%6d %6d ", kth->ktr_pid, kth->ktr_lid); 398 col += printf("%-8.*s ", MAXCOMLEN, kth->ktr_comm); 399 if (timestamp) { 400 if (timestamp & TIMESTAMP_ABSOLUTE) { 401 temp.tv_sec = kth->ktr_ts.tv_sec; 402 temp.tv_nsec = kth->ktr_ts.tv_nsec; 403 col += output_ts(&temp); 404 } 405 406 if (timestamp & TIMESTAMP_ELAPSED) { 407 if (starttime.tv_sec == 0) { 408 starttime.tv_sec = kth->ktr_ts.tv_sec; 409 starttime.tv_nsec = kth->ktr_ts.tv_nsec; 410 temp.tv_sec = temp.tv_nsec = 0; 411 } else 412 timespecsub(&kth->ktr_ts, &starttime, &temp); 413 col += output_ts(&temp); 414 } 415 416 if (timestamp & TIMESTAMP_RELATIVE) { 417 if (prevtime.tv_sec == 0) 418 temp.tv_sec = temp.tv_nsec = 0; 419 else 420 timespecsub(&kth->ktr_ts, &prevtime, &temp); 421 prevtime.tv_sec = kth->ktr_ts.tv_sec; 422 prevtime.tv_nsec = kth->ktr_ts.tv_nsec; 423 col += output_ts(&temp); 424 } 425 } 426 col += printf("%-4s ", type); 427 return col; 428 } 429 430 static int 431 output_ts(const struct timespec *ts) 432 { 433 int col; 434 435 if (__predict_true(ts->tv_sec >= 0)) 436 col = printf("%lld.%09ld ", 437 (long long)ts->tv_sec, (long)ts->tv_nsec); 438 else { 439 /* 440 * The time represented by a timespec object ts is always 441 * 442 * ts.tv_sec + ts.tv_nsec * 1e-9 443 * 444 * where ts.tv_sec may be negative but ts.tv_nsec is 445 * always in [0, 1e9). So, for example, -1/4 second is 446 * represented by the struct timespec object 447 * 448 * { .tv_sec = -1, .tv_nsec = 750000000 } 449 */ 450 const struct timespec zero_ts = { 0, 0 }; 451 struct timespec abs_ts; 452 timespecsub(&zero_ts, ts, &abs_ts); 453 col = printf("-%lld.%09ld ", 454 (long long)abs_ts.tv_sec, (long)abs_ts.tv_nsec); 455 } 456 return col; 457 } 458 459 static void 460 output_long(u_long it, int as_x) 461 { 462 if (cur_emul->flags & EMUL_FLAG_NETBSD32) 463 printf(as_x ? "%#x" : "%d", (u_int)it); 464 else 465 printf(as_x ? "%#lx" : "%ld", it); 466 } 467 468 static const char * 469 fcntlname(u_long cmd) 470 { 471 #define FCNTLCASE(a) case a: return # a 472 switch (cmd) { 473 FCNTLCASE(F_DUPFD); 474 FCNTLCASE(F_GETFD); 475 FCNTLCASE(F_SETFD); 476 FCNTLCASE(F_GETFL); 477 FCNTLCASE(F_SETFL); 478 FCNTLCASE(F_GETOWN); 479 FCNTLCASE(F_SETOWN); 480 FCNTLCASE(F_GETLK); 481 FCNTLCASE(F_SETLK); 482 FCNTLCASE(F_SETLKW); 483 FCNTLCASE(F_CLOSEM); 484 FCNTLCASE(F_MAXFD); 485 FCNTLCASE(F_DUPFD_CLOEXEC); 486 FCNTLCASE(F_GETNOSIGPIPE); 487 FCNTLCASE(F_SETNOSIGPIPE); 488 default: 489 return NULL; 490 } 491 } 492 493 static void 494 ioctldecode(u_long cmd) 495 { 496 char dirbuf[4], *dir = dirbuf; 497 int c; 498 499 if (cmd & IOC_IN) 500 *dir++ = 'W'; 501 if (cmd & IOC_OUT) 502 *dir++ = 'R'; 503 *dir = '\0'; 504 505 c = (cmd >> 8) & 0xff; 506 if (isprint(c)) 507 printf("_IO%s('%c',", dirbuf, c); 508 else 509 printf("_IO%s(0x%02x,", dirbuf, c); 510 output_long(cmd & 0xff, decimal == 0); 511 if ((cmd & IOC_VOID) == 0) { 512 putchar(','); 513 output_long(IOCPARM_LEN(cmd), decimal == 0); 514 } 515 putchar(')'); 516 } 517 518 static void 519 ktrsyscall(struct ktr_syscall *ktr) 520 { 521 int argcount; 522 const struct emulation *emul = cur_emul; 523 register_t *ap; 524 char c; 525 const char *cp; 526 const char *sys_name; 527 528 argcount = ktr->ktr_argsize / sizeof (*ap); 529 530 emul_changed = 0; 531 532 if (numeric || 533 ((ktr->ktr_code >= emul->nsysnames || ktr->ktr_code < 0))) { 534 sys_name = "?"; 535 (void)printf("[%d]", ktr->ktr_code); 536 } else { 537 sys_name = emul->sysnames[ktr->ktr_code]; 538 (void)printf("%s", sys_name); 539 } 540 #ifdef _LP64 541 #define NETBSD32_ "netbsd32_" 542 if (cur_emul->flags & EMUL_FLAG_NETBSD32) { 543 size_t len = strlen(NETBSD32_); 544 if (strncmp(sys_name, NETBSD32_, len) == 0) 545 sys_name += len; 546 } 547 #undef NETBSD32_ 548 #endif 549 550 ap = (register_t *)((char *)ktr + sizeof(struct ktr_syscall)); 551 if (argcount) { 552 c = '('; 553 if (plain) { 554 ; 555 556 } else if (strcmp(sys_name, "exit_group") == 0 || 557 (strcmp(emul->name, "linux") != 0 && 558 strcmp(emul->name, "linux32") != 0 && 559 strcmp(sys_name, "exit") == 0)) { 560 ectx_delete(); 561 562 } else if (strcmp(sys_name, "ioctl") == 0 && argcount >= 2) { 563 (void)putchar('('); 564 output_long((long)*ap, !(decimal || small(*ap))); 565 ap++; 566 argcount--; 567 if ((cp = ioctlname(*ap)) != NULL) 568 (void)printf(",%s", cp); 569 else { 570 (void)putchar(','); 571 ioctldecode(*ap); 572 } 573 ap++; 574 argcount--; 575 c = ','; 576 577 } else if (strcmp(sys_name, "fcntl") == 0 && argcount >= 2) { 578 (void)putchar('('); 579 output_long((long)*ap, !(decimal || small(*ap))); 580 ap++; 581 argcount--; 582 if ((cp = fcntlname(*ap)) != NULL) 583 (void)printf(",%s", cp); 584 else { 585 (void)printf(",%#lx", (unsigned long)*ap); 586 } 587 ap++; 588 argcount--; 589 c = ','; 590 } else if ((strstr(sys_name, "sigaction") != NULL || 591 strstr(sys_name, "sigvec") != NULL) && argcount >= 1) { 592 (void)printf("(SIG%s", signame(ap[0], 1)); 593 ap += 1; 594 argcount -= 1; 595 c = ','; 596 597 } else if ((strcmp(sys_name, "kill") == 0 || 598 strcmp(sys_name, "killpg") == 0) && argcount >= 2) { 599 putchar('('); 600 output_long((long)ap[0], !(decimal || small(*ap))); 601 (void)printf(", SIG%s", signame(ap[1], 1)); 602 ap += 2; 603 argcount -= 2; 604 c = ','; 605 } else if (strcmp(sys_name, "mmap") == 0 && argcount >= 6) { 606 char buf[1024]; 607 putchar('('); 608 output_long((long)ap[0], !(decimal || small(ap[0]))); 609 c = ','; 610 putchar(c); 611 output_long((long)ap[1], !(decimal || small(ap[1]))); 612 putchar(c); 613 if (ap[2] == PROT_NONE) { 614 fputs("PROT_NONE", stdout); 615 } else { 616 const char *s = ""; 617 c = 0; 618 if (ap[2] & PROT_READ) { 619 fputs("PROT_READ", stdout); 620 s = "|"; 621 ap[2] &= ~PROT_READ; 622 } 623 if (ap[2] & PROT_WRITE) { 624 printf("%sPROT_WRITE", s); 625 ap[2] &= ~PROT_WRITE; 626 s = "|"; 627 } 628 if (ap[2] & PROT_EXEC) { 629 printf("%sPROT_EXEC", s); 630 ap[2] &= ~PROT_EXEC; 631 s = "|"; 632 } 633 if (ap[2]) { 634 printf("%s%#lx", s, (long)ap[2]); 635 } 636 } 637 snprintb(buf, sizeof(buf), MAP_FMT, ap[3]); 638 printf(",%s", buf); 639 ap += 4; 640 argcount -= 4; 641 c = ','; 642 } else if (strcmp(sys_name, "ptrace") == 0 && argcount >= 1) { 643 putchar('('); 644 if (strcmp(emul->name, "linux") == 0 || 645 strcmp(emul->name, "linux32") == 0) { 646 if ((long)*ap >= 0 && *ap < 647 (register_t)(sizeof(linux_ptrace_ops) / 648 sizeof(linux_ptrace_ops[0]))) 649 (void)printf("%s", 650 linux_ptrace_ops[*ap]); 651 else 652 output_long((long)*ap, 1); 653 } else { 654 if ((long)*ap >= 0 && *ap < (register_t) 655 __arraycount(ptrace_ops)) 656 (void)printf("%s", ptrace_ops[*ap]); 657 #ifdef PT_MACHDEP_STRINGS 658 else if (*ap >= PT_FIRSTMACH && 659 *ap - PT_FIRSTMACH < (register_t) 660 __arraycount(ptrace_machdep_ops)) 661 (void)printf("%s", ptrace_machdep_ops[*ap - PT_FIRSTMACH]); 662 #endif 663 else 664 output_long((long)*ap, 1); 665 } 666 ap++; 667 argcount--; 668 c = ','; 669 670 } 671 while (argcount > 0) { 672 putchar(c); 673 output_long((long)*ap, !(decimal || small(*ap))); 674 ap++; 675 argcount--; 676 c = ','; 677 } 678 (void)putchar(')'); 679 } 680 (void)putchar('\n'); 681 } 682 683 static void 684 ktrsysret(struct ktr_sysret *ktr, int len) 685 { 686 const struct emulation *emul; 687 int error = ktr->ktr_error; 688 int code = ktr->ktr_code; 689 690 if (emul_changed) { 691 /* In order to get system call name right in execve return */ 692 emul = prev_emul; 693 emul_changed = 0; 694 } else 695 emul = cur_emul; 696 697 if (numeric || ((code >= emul->nsysnames || code < 0 || plain > 1))) 698 (void)printf("[%d] ", code); 699 else 700 (void)printf("%s ", emul->sysnames[code]); 701 702 switch (error) { 703 case 0: 704 rprint(ktr->ktr_retval); 705 if (len > (int)offsetof(struct ktr_sysret, ktr_retval_1) && 706 ktr->ktr_retval_1 != 0) { 707 (void)printf(", "); 708 rprint(ktr->ktr_retval_1); 709 } 710 break; 711 712 default: 713 eprint(error); 714 break; 715 } 716 (void)putchar('\n'); 717 } 718 719 static void 720 ktrexecfd(struct ktr_execfd *ktr) 721 { 722 static const char *dnames[] = { DTYPE_NAMES }; 723 if (ktr->ktr_dtype < __arraycount(dnames)) 724 printf("%s %d\n", dnames[ktr->ktr_dtype], ktr->ktr_fd); 725 else 726 printf("UNKNOWN(%u) %d\n", ktr->ktr_dtype, ktr->ktr_fd); 727 } 728 729 static void 730 rprint(register_t ret) 731 { 732 733 if (!plain) { 734 output_long(ret, 0); 735 if (!small(ret)) { 736 putchar('/'); 737 output_long(ret, 1); 738 } 739 } else { 740 output_long(ret, !(decimal || small(ret))); 741 } 742 } 743 744 /* 745 * We print the original emulation's error numerically, but we 746 * translate it to netbsd to print it symbolically. 747 */ 748 static void 749 eprint(int e) 750 { 751 int i = e; 752 753 if (cur_emul->errnomap) { 754 755 /* No remapping for ERESTART and EJUSTRETURN */ 756 /* Kludge for linux that has negative error numbers */ 757 if (cur_emul->errnomap[2] > 0 && e < 0) 758 goto normal; 759 760 for (i = 0; i < cur_emul->nerrnomap; i++) 761 if (e == cur_emul->errnomap[i]) 762 break; 763 764 if (i == cur_emul->nerrnomap) { 765 printf("-1 unknown errno %d", e); 766 return; 767 } 768 } 769 770 normal: 771 switch (i) { 772 case ERESTART: 773 (void)printf("RESTART"); 774 break; 775 776 case EJUSTRETURN: 777 (void)printf("JUSTRETURN"); 778 break; 779 780 default: 781 (void)printf("-1 errno %d", e); 782 if (!plain) 783 (void)printf(" %s", strerror(i)); 784 } 785 } 786 787 static void 788 ktrnamei(char *cp, int len) 789 { 790 791 (void)printf("\"%.*s\"\n", len, cp); 792 } 793 794 static void 795 ktremul(char *name, size_t len, size_t bufsize) 796 { 797 798 if (len >= bufsize) 799 len = bufsize - 1; 800 801 name[len] = '\0'; 802 setemul(name, ktr_header.ktr_pid, 1); 803 emul_changed = 1; 804 805 (void)printf("\"%s\"\n", name); 806 } 807 808 static void 809 hexdump_buf(const void *vdp, int datalen, int word_sz) 810 { 811 const char hex[] = "0123456789abcdef"; 812 char chars[16], prev[16]; 813 char bytes[16 * 3 + 4]; 814 const unsigned char *dp = vdp; 815 const unsigned char *datalim = dp + datalen; 816 const unsigned char *line_end; 817 int off, l = 0, c; 818 char *cp, *bp; 819 int divmask = word_sz - 1; /* block size in bytes */ 820 int gdelim = 3; /* gap between blocks */ 821 int bsize = 2; /* increment for each byte */ 822 int width; 823 int dupl = 0; 824 #if _BYTE_ORDER == _LITTLE_ENDIAN 825 int bswap = word_sz - 1; 826 #else 827 #define bswap 0 828 #endif 829 830 switch (word_sz) { 831 case 2: 832 gdelim = 2; 833 break; 834 case 1: 835 divmask = 7; 836 bsize = 3; 837 gdelim = 1; 838 break; 839 default: 840 break; 841 } 842 width = 16 * bsize + (16 / (divmask + 1)) * gdelim; 843 if (word_sz != 1) 844 width += 2; 845 846 for (off = 0; dp < datalim; off += l) { 847 memset(bytes, ' ', sizeof bytes); 848 line_end = dp + 16; 849 if (line_end >= datalim) { 850 line_end = datalim; 851 dupl |= 1; /* need to print */ 852 } else { 853 if (dupl == 0 || memcmp(dp, prev, sizeof chars)) 854 dupl |= 1; 855 } 856 857 if (!(dupl & 1)) { 858 /* This is a duplicate of the line above, count 'em */ 859 dupl += 2; 860 dp = line_end; 861 continue; 862 } 863 864 if (dupl > 3) { 865 /* previous line as a duplicate */ 866 if (dupl == 5) 867 /* Only one duplicate, print line */ 868 printf("\t%-5.3x%.*s%.*s\n", 869 off - l, width, bytes, l, chars); 870 else 871 printf("\t%.*s\n", 872 snprintf(NULL, 0, "%3x", off), "*****"); 873 } 874 875 for (l = 0, bp = bytes, cp = chars; dp < line_end; l++) { 876 c = *dp++; 877 prev[l] = c; 878 if ((l & divmask) == 0) 879 bp += gdelim; 880 bp[(l ^ bswap) * bsize] = hex[c >> 4]; 881 bp[(l ^ bswap) * bsize + 1] = hex[c & 0xf]; 882 *cp++ = isgraph(c) ? c : '.'; 883 } 884 885 printf("\t%-5.3x%.*s%.*s\n", off, width, bytes, l, chars); 886 dupl = 2; 887 } 888 } 889 890 static void 891 visdump_buf(const void *vdp, int datalen, int col) 892 { 893 const unsigned char *dp = vdp; 894 char *cp; 895 int width; 896 char visbuf[5]; 897 static int screenwidth = 0; 898 899 if (screenwidth == 0) { 900 struct winsize ws; 901 902 if (!plain && ioctl(fileno(stderr), TIOCGWINSZ, &ws) != -1 && 903 ws.ws_col > 8) 904 screenwidth = ws.ws_col; 905 else 906 screenwidth = 80; 907 } 908 909 (void)printf("\""); 910 col++; 911 for (; datalen > 0; datalen--, dp++) { 912 (void)svis(visbuf, *dp, VIS_CSTYLE, 913 datalen > 1 ? *(dp + 1) : 0, "\"\n"); 914 cp = visbuf; 915 /* 916 * Keep track of printables and 917 * space chars (like fold(1)). 918 */ 919 if (col == 0) { 920 (void)putchar('\t'); 921 col = 8; 922 } 923 switch (*cp) { 924 case '\n': 925 col = 0; 926 (void)putchar('\n'); 927 continue; 928 case '\t': 929 width = 8 - (col & 07); 930 break; 931 default: 932 width = strlen(cp); 933 } 934 if (col + width > (screenwidth - 2)) { 935 (void)printf("\\\n\t"); 936 col = 8; 937 if (*cp == '\t') 938 width = 8; 939 } 940 col += width; 941 do { 942 (void)putchar(*cp++); 943 } while (*cp); 944 } 945 if (col == 0) 946 (void)printf(" "); 947 (void)printf("\"\n"); 948 } 949 950 static void 951 ktrgenio(struct ktr_genio *ktr, int len) 952 { 953 int datalen = len - sizeof (struct ktr_genio); 954 char *dp = (char *)ktr + sizeof (struct ktr_genio); 955 956 if (ktr->ktr_fd != -1) 957 printf("fd %d ", ktr->ktr_fd); 958 printf("%s %d bytes\n", 959 ktr->ktr_rw == UIO_READ ? "read" : "wrote", datalen); 960 if (maxdata == 0) 961 return; 962 if (maxdata > 0 && datalen > maxdata) 963 datalen = maxdata; 964 if (word_size) { 965 hexdump_buf(dp, datalen, word_size); 966 return; 967 } 968 (void)printf(" "); 969 visdump_buf(dp, datalen, 7); 970 } 971 972 static void 973 ktrpsig(void *v, int len) 974 { 975 int signo, first; 976 struct { 977 struct ktr_psig ps; 978 siginfo_t si; 979 } *psig = v; 980 siginfo_t *si = &psig->si; 981 const char *code; 982 983 (void)printf("SIG%s ", signame(psig->ps.signo, 0)); 984 if (psig->ps.action == SIG_DFL) 985 (void)printf("SIG_DFL"); 986 else { 987 (void)printf("caught handler=%p mask=(", psig->ps.action); 988 first = 1; 989 for (signo = 1; signo < NSIG; signo++) { 990 if (sigismember(&psig->ps.mask, signo)) { 991 if (first) 992 first = 0; 993 else 994 (void)printf(","); 995 (void)printf("%d", signo); 996 } 997 } 998 (void)printf(")"); 999 } 1000 switch (len) { 1001 case sizeof(struct ktr_psig): 1002 if (psig->ps.code) 1003 printf(" code=0x%x", psig->ps.code); 1004 printf(psig->ps.action == SIG_DFL ? "\n" : ")\n"); 1005 return; 1006 case sizeof(*psig): 1007 if (si->si_code == 0) { 1008 printf(": code=SI_USER sent by pid=%d, uid=%d)\n", 1009 si->si_pid, si->si_uid); 1010 return; 1011 } 1012 1013 if (si->si_code < 0) { 1014 switch (si->si_code) { 1015 case SI_TIMER: 1016 case SI_QUEUE: 1017 printf(": code=%s sent by pid=%d, uid=%d with " 1018 "sigval %p)\n", si->si_code == SI_TIMER ? 1019 "SI_TIMER" : "SI_QUEUE", si->si_pid, 1020 si->si_uid, si->si_value.sival_ptr); 1021 return; 1022 case SI_ASYNCIO: 1023 case SI_MESGQ: 1024 printf(": code=%s with sigval %p)\n", 1025 si->si_code == SI_ASYNCIO ? 1026 "SI_ASYNCIO" : "SI_MESGQ", 1027 si->si_value.sival_ptr); 1028 return; 1029 case SI_LWP: 1030 printf(": code=SI_LWP sent by pid=%d, " 1031 "uid=%d)\n", si->si_pid, si->si_uid); 1032 return; 1033 default: 1034 code = NULL; 1035 break; 1036 } 1037 if (code) 1038 printf(": code=%s unimplemented)\n", code); 1039 else 1040 printf(": code=%d unimplemented)\n", 1041 si->si_code); 1042 return; 1043 } 1044 1045 if (si->si_code == SI_NOINFO) { 1046 printf(": code=SI_NOINFO\n"); 1047 return; 1048 } 1049 1050 code = siginfocodename(si->si_signo, si->si_code); 1051 switch (si->si_signo) { 1052 case SIGCHLD: 1053 printf(": code=%s child pid=%d, uid=%d, " 1054 " status=%u, utime=%lu, stime=%lu)\n", 1055 code, si->si_pid, 1056 si->si_uid, si->si_status, 1057 (unsigned long) si->si_utime, 1058 (unsigned long) si->si_stime); 1059 return; 1060 case SIGILL: 1061 case SIGFPE: 1062 case SIGSEGV: 1063 case SIGBUS: 1064 case SIGTRAP: 1065 printf(": code=%s, addr=%p, trap=%d)\n", 1066 code, si->si_addr, si->si_trap); 1067 return; 1068 case SIGIO: 1069 printf(": code=%s, fd=%d, band=%lx)\n", 1070 code, si->si_fd, si->si_band); 1071 return; 1072 default: 1073 printf(": code=%s, errno=%d)\n", 1074 code, si->si_errno); 1075 return; 1076 } 1077 /*NOTREACHED*/ 1078 default: 1079 warnx("Unhandled size %d for ktrpsig", len); 1080 break; 1081 } 1082 } 1083 1084 static void 1085 ktrcsw(struct ktr_csw *cs) 1086 { 1087 1088 (void)printf("%s %s\n", cs->out ? "stop" : "resume", 1089 cs->user ? "user" : "kernel"); 1090 } 1091 1092 static void 1093 ktruser_msghdr(const char *name, const void *buf, size_t len) 1094 { 1095 struct msghdr m; 1096 1097 if (len != sizeof(m)) 1098 warnx("%.*s: len %zu != %zu", KTR_USER_MAXIDLEN, name, len, 1099 sizeof(m)); 1100 memcpy(&m, buf, len); 1101 printf("%.*s: [name=%p, namelen=%zu, iov=%p, iovlen=%zu, control=%p, " 1102 "controllen=%zu, flags=%x]\n", KTR_USER_MAXIDLEN, name, 1103 m.msg_name, (size_t)m.msg_namelen, m.msg_iov, (size_t)m.msg_iovlen, 1104 m.msg_control, (size_t)m.msg_controllen, m.msg_flags); 1105 } 1106 1107 static void 1108 ktruser_soname(const char *name, const void *buf, size_t len) 1109 { 1110 char fmt[512]; 1111 sockaddr_snprintf(fmt, sizeof(fmt), "%a", buf); 1112 printf("%.*s: [%s]\n", KTR_USER_MAXIDLEN, name, fmt); 1113 } 1114 1115 static void 1116 ktruser_control(const char *name, const void *buf, size_t len) 1117 { 1118 struct cmsghdr m; 1119 1120 if (len < sizeof(m)) 1121 warnx("%.*s: len %zu < %zu", KTR_USER_MAXIDLEN, name, len, 1122 sizeof(m)); 1123 memcpy(&m, buf, sizeof(m)); 1124 printf("%.*s: [len=%zu, level=%d, type=%d]\n", KTR_USER_MAXIDLEN, name, 1125 (size_t)m.cmsg_len, m.cmsg_level, m.cmsg_type); 1126 } 1127 1128 static void 1129 ktruser_misc(const char *name, const void *buf, size_t len) 1130 { 1131 size_t i; 1132 const char *dta = buf; 1133 1134 printf("%.*s: %zu, ", KTR_USER_MAXIDLEN, name, len); 1135 for (i = 0; i < len; i++) 1136 printf("%02x", (unsigned char)dta[i]); 1137 printf("\n"); 1138 } 1139 1140 static struct { 1141 const char *name; 1142 void (*func)(const char *, const void *, size_t); 1143 } nv[] = { 1144 { "msghdr", ktruser_msghdr }, 1145 { "mbsoname", ktruser_soname }, 1146 { "mbcontrol", ktruser_control }, 1147 { NULL, ktruser_misc }, 1148 }; 1149 1150 static void 1151 ktruser(struct ktr_user *usr, int len) 1152 { 1153 unsigned char *dta; 1154 1155 len -= sizeof(struct ktr_user); 1156 dta = (unsigned char *)(usr + 1); 1157 if (word_size) { 1158 printf("%.*s:", KTR_USER_MAXIDLEN, usr->ktr_id); 1159 printf("\n"); 1160 hexdump_buf(dta, len, word_size); 1161 return; 1162 } 1163 for (size_t j = 0; j < __arraycount(nv); j++) 1164 if (nv[j].name == NULL || 1165 strncmp(nv[j].name, usr->ktr_id, KTR_USER_MAXIDLEN) == 0) { 1166 (*nv[j].func)(usr->ktr_id, dta, len); 1167 break; 1168 } 1169 } 1170 1171 static void 1172 ktrmib(int *namep, int len) 1173 { 1174 size_t i; 1175 1176 for (i = 0; i < (len / sizeof(*namep)); i++) 1177 printf("%s%d", (i == 0) ? "" : ".", namep[i]); 1178 printf("\n"); 1179 } 1180 1181 static const char * 1182 signame(long sig, int xlat) 1183 { 1184 static char buf[64]; 1185 1186 if (sig == 0) 1187 return " 0"; 1188 else if (sig < 0 || sig >= NSIG) { 1189 (void)snprintf(buf, sizeof(buf), "*unknown %ld*", sig); 1190 return buf; 1191 } else 1192 return sys_signame[(xlat && cur_emul->signalmap != NULL) ? 1193 cur_emul->signalmap[sig] : sig]; 1194 } 1195 1196 static void 1197 usage(void) 1198 { 1199 if (strcmp(getprogname(), "ioctlname") == 0) { 1200 (void)fprintf(stderr, "Usage: %s [-e emulation] <ioctl> ...\n", 1201 getprogname()); 1202 } else { 1203 (void)fprintf(stderr, "Usage: %s [-dElNnRT] [-e emulation] " 1204 "[-f file] [-m maxdata] [-p pid]\n [-t trstr] " 1205 "[-x | -X size] [file]\n", getprogname()); 1206 } 1207 exit(1); 1208 } 1209
Indexes created Thu Sep 25 16:09:42 GMT 2025