usr.bin/kdump/kdump.c

   1 /*-
   2  * Copyright (c) 1988, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  * @(#) Copyright (c) 1988, 1993 The Regents of the University of California.  All rights reserved.
  34  * @(#)kdump.c  8.1 (Berkeley) 6/6/93
  35  * $FreeBSD: src/usr.bin/kdump/kdump.c,v 1.29 2006/05/20 14:27:22 netchild Exp $
  36  * $DragonFly: src/usr.bin/kdump/kdump.c,v 1.13 2008/10/16 01:52:32 swildner Exp $
  37  */
  38
  39 #define _KERNEL_STRUCTURES
  40
  41 #include <sys/errno.h>
  42 #include <sys/param.h>
  43 #include <sys/errno.h>
  44 #include <sys/time.h>
  45 #include <sys/uio.h>
  46 #include <sys/ktrace.h>
  47 #include <sys/ioctl.h>
  48 #include <sys/ptrace.h>
  49 #include <err.h>
  50 #include <locale.h>
  51 #include <stdio.h>
  52 #include <stdlib.h>
  53 #include <string.h>
  54 #include <unistd.h>
  55 #include <vis.h>
  56 #include "ktrace.h"
  57 #include "kdump_subr.h"
  58
  59 int timestamp, decimal, fancy = 1, tail, maxdata = 64;
  60 int fixedformat;
  61 char *tracefile = DEF_TRACEFILE;
  62 struct ktr_header ktr_header;
  63
  64 #define eqs(s1, s2)     (strcmp((s1), (s2)) == 0)
  65
  66 main(int argc, char **argv)
  67 {
  68         int ch, col, ktrlen, size;
  69         pid_t do_pid = -1;
  70         void *m;
  71         int trpoints = ALL_POINTS;
  72         char *cp;
  73
  74         (void) setlocale(LC_CTYPE, "");
  75
  76         while ((ch = getopt(argc,argv,"f:djlm:np:RTt:")) != -1)
  77                 switch((char)ch) {
  78                 case 'f':
  79                         tracefile = optarg;
  80                         break;
  81                 case 'j':
  82                         fixedformat = 1;
  83                         break;
  84                 case 'd':
  85                         decimal = 1;
  86                         break;
  87                 case 'l':
  88                         tail = 1;
  89                         break;
  90                 case 'm':
  91                         maxdata = atoi(optarg);
  92                         break;
  93                 case 'n':
  94                         fancy = 0;
  95                         break;
  96                 case 'p':
  97                         do_pid = strtoul(optarg, &cp, 0);
  98                         if (*cp != 0)
  99                                 errx(1,"invalid number %s", optarg);
 100                         break;
 101                 case 'R':
 102                         timestamp = 2;  /* relative timestamp */
 103                         break;
 104                 case 'T':
 105                         timestamp = 1;
 106                         break;
 107                 case 't':
 108                         trpoints = getpoints(optarg);
 109                         if (trpoints < 0)
 110                                 errx(1, "unknown trace point in %s", optarg);
 111                         break;
 112                 default:
 113                         usage();
 114                 }
 115
 116         if (argc > optind)
 117                 usage();
 118
 119         m = (void *)malloc(size = 1025);
 120         if (m == NULL)
 121                 errx(1, "%s", strerror(ENOMEM));
 122         if (!freopen(tracefile, "r", stdin))
 123                 err(1, "%s", tracefile);
 124         while (fread_tail(&ktr_header, sizeof(struct ktr_header), 1)) {
 125                 if (trpoints & (1 << ktr_header.ktr_type) &&
 126                     (do_pid == -1 || ktr_header.ktr_pid == do_pid))
 127                         col = dumpheader(&ktr_header);
 128                 else
 129                         col = -1;
 130                 if ((ktrlen = ktr_header.ktr_len) < 0)
 131                         errx(1, "bogus length 0x%x", ktrlen);
 132                 if (ktrlen > size) {
 133                         m = (void *)realloc(m, ktrlen+1);
 134                         if (m == NULL)
 135                                 errx(1, "%s", strerror(ENOMEM));
 136                         size = ktrlen;
 137                 }
 138                 if (ktrlen && fread_tail(m, ktrlen, 1) == 0)
 139                         errx(1, "data too short");
 140                 if ((trpoints & (1<<ktr_header.ktr_type)) == 0)
 141                         continue;
 142                 if (col == -1)
 143                         continue;
 144                 switch (ktr_header.ktr_type) {
 145                 case KTR_SYSCALL:
 146                         ktrsyscall((struct ktr_syscall *)m);
 147                         break;
 148                 case KTR_SYSRET:
 149                         ktrsysret((struct ktr_sysret *)m);
 150                         break;
 151                 case KTR_NAMEI:
 152                         ktrnamei(m, ktrlen);
 153                         break;
 154                 case KTR_GENIO:
 155                         ktrgenio((struct ktr_genio *)m, ktrlen);
 156                         break;
 157                 case KTR_PSIG:
 158                         ktrpsig((struct ktr_psig *)m);
 159                         break;
 160                 case KTR_CSW:
 161                         ktrcsw((struct ktr_csw *)m);
 162                         break;
 163                 case KTR_USER:
 164                         ktruser(ktrlen, m);
 165                         break;
 166                 }
 167                 if (tail)
 168                         (void)fflush(stdout);
 169         }
 170 }
 171
 172 fread_tail(char *buf, int size, int num)
 173 {
 174         int i;
 175
 176         while ((i = fread(buf, size, num, stdin)) == 0 && tail) {
 177                 (void)sleep(1);
 178                 clearerr(stdin);
 179         }
 180         return (i);
 181 }
 182
 183 dumpheader(struct ktr_header *kth)
 184 {
 185         static char unknown[64];
 186         static struct timeval prevtime, temp;
 187         char *type;
 188         int col;
 189
 190         switch (kth->ktr_type) {
 191         case KTR_SYSCALL:
 192                 type = "CALL";
 193                 break;
 194         case KTR_SYSRET:
 195                 type = "RET ";
 196                 break;
 197         case KTR_NAMEI:
 198                 type = "NAMI";
 199                 break;
 200         case KTR_GENIO:
 201                 type = "GIO ";
 202                 break;
 203         case KTR_PSIG:
 204                 type = "PSIG";
 205                 break;
 206         case KTR_CSW:
 207                 type = "CSW";
 208                 break;
 209         case KTR_USER:
 210                 type = "USER";
 211                 break;
 212         default:
 213                 (void)sprintf(unknown, "UNKNOWN(%d)", kth->ktr_type);
 214                 type = unknown;
 215         }
 216
 217         if (kth->ktr_tid || (kth->ktr_flags & KTRH_THREADED) || fixedformat)
 218                 col = printf("%5d:%-4d", kth->ktr_pid, kth->ktr_tid);
 219         else
 220                 col = printf("%5d", kth->ktr_pid);
 221         col += printf(" %-8.*s ", MAXCOMLEN, kth->ktr_comm);
 222         if (timestamp) {
 223                 if (timestamp == 2) {
 224                         temp = kth->ktr_time;
 225                         timevalsub(&kth->ktr_time, &prevtime);
 226                         prevtime = temp;
 227                 }
 228                 col += printf("%ld.%06ld ",
 229                     kth->ktr_time.tv_sec, kth->ktr_time.tv_usec);
 230         }
 231         col += printf("%s  ", type);
 232         return col;
 233 }
 234
 235 #include <sys/syscall.h>
 236 #define KTRACE
 237 #include <sys/kern/syscalls.c>
 238 #undef KTRACE
 239 int nsyscalls = sizeof (syscallnames) / sizeof (syscallnames[0]);
 240
 241 static char *ptrace_ops[] = {
 242         "PT_TRACE_ME",  "PT_READ_I",    "PT_READ_D",    "PT_READ_U",
 243         "PT_WRITE_I",   "PT_WRITE_D",   "PT_WRITE_U",   "PT_CONTINUE",
 244         "PT_KILL",      "PT_STEP",      "PT_ATTACH",    "PT_DETACH",
 245 };
 246
 247 ktrsyscall(struct ktr_syscall *ktr)
 248 {
 249         int narg = ktr->ktr_narg;
 250         register_t *ip;
 251         char *ioctlname();
 252
 253         if (ktr->ktr_code >= nsyscalls || ktr->ktr_code < 0)
 254                 (void)printf("[%d]", ktr->ktr_code);
 255         else
 256                 (void)printf("%s", syscallnames[ktr->ktr_code]);
 257         ip = &ktr->ktr_args[0];
 258         if (narg) {
 259                 char c = '(';
 260                 if (fancy) {
 261
 262 #define print_number(i,n,c) do {                      \
 263         if (decimal)                                  \
 264                 (void)printf("%c%ld", c, (long)*i);   \
 265         else                                          \
 266                 (void)printf("%c%#lx", c, (long)*i);  \
 267         i++;                                          \
 268         n--;                                          \
 269         c = ',';                                      \
 270         } while (0);
 271
 272                         if (ktr->ktr_code == SYS_ioctl) {
 273                                 char *cp;
 274                                 print_number(ip,narg,c);
 275                                 if ((cp = ioctlname(*ip)) != NULL)
 276                                         (void)printf(",%s", cp);
 277                                 else {
 278                                         if (decimal)
 279                                                 (void)printf(",%ld", (long)*ip);
 280                                         else
 281                                                 (void)printf(",%#lx ", (long)*ip);
 282                                 }
 283                                 c = ',';
 284                                 ip++;
 285                                 narg--;
 286                         } else if (ktr->ktr_code == SYS_access) {
 287                                 print_number(ip,narg,c);
 288                                 (void)putchar(',');
 289                                 accessmodename ((int)*ip);
 290                                 ip++;
 291                                 narg--;
 292                         } else if (ktr->ktr_code == SYS_open) {
 293                                 int     flags;
 294                                 int     mode;
 295                                 print_number(ip,narg,c);
 296                                 flags = *ip;
 297                                 mode = *++ip;
 298                                 (void)putchar(',');
 299                                 flagsandmodename (flags, mode, decimal);
 300                                 ip++;
 301                                 narg-=2;
 302                         } else if (ktr->ktr_code == SYS_wait4) {
 303                                 print_number(ip,narg,c);
 304                                 print_number(ip,narg,c);
 305                                 (void)putchar(',');
 306                                 wait4optname ((int)*ip);
 307                                 ip++;
 308                                 narg--;
 309                         } else if (ktr->ktr_code == SYS_chmod ||
 310                                    ktr->ktr_code == SYS_fchmod ||
 311                                    ktr->ktr_code == SYS_lchmod) {
 312                                 print_number(ip,narg,c);
 313                                 (void)putchar(',');
 314                                 modename ((int)*ip);
 315                                 ip++;
 316                                 narg--;
 317                         } else if (ktr->ktr_code == SYS_mknod) {
 318                                 print_number(ip,narg,c);
 319                                 (void)putchar(',');
 320                                 modename ((int)*ip);
 321                                 ip++;
 322                                 narg--;
 323                         } else if (ktr->ktr_code == SYS_getfsstat) {
 324                                 print_number(ip,narg,c);
 325                                 print_number(ip,narg,c);
 326                                 (void)putchar(',');
 327                                 getfsstatflagsname ((int)*ip);
 328                                 ip++;
 329                                 narg--;
 330                         } else if (ktr->ktr_code == SYS_mount) {
 331                                 print_number(ip,narg,c);
 332                                 print_number(ip,narg,c);
 333                                 (void)putchar(',');
 334                                 mountflagsname ((int)*ip);
 335                                 ip++;
 336                                 narg--;
 337                         } else if (ktr->ktr_code == SYS_unmount) {
 338                                 print_number(ip,narg,c);
 339                                 (void)putchar(',');
 340                                 mountflagsname ((int)*ip);
 341                                 ip++;
 342                                 narg--;
 343                         } else if (ktr->ktr_code == SYS_recvmsg ||
 344                                    ktr->ktr_code == SYS_sendmsg) {
 345                                 print_number(ip,narg,c);
 346                                 print_number(ip,narg,c);
 347                                 (void)putchar(',');
 348                                 sendrecvflagsname ((int)*ip);
 349                                 ip++;
 350                                 narg--;
 351                         } else if (ktr->ktr_code == SYS_recvfrom ||
 352                                    ktr->ktr_code == SYS_sendto) {
 353                                 print_number(ip,narg,c);
 354                                 print_number(ip,narg,c);
 355                                 print_number(ip,narg,c);
 356                                 (void)putchar(',');
 357                                 sendrecvflagsname ((int)*ip);
 358                                 ip++;
 359                                 narg--;
 360                         } else if (ktr->ktr_code == SYS_chflags ||
 361                                    ktr->ktr_code == SYS_fchflags) {
 362                                 print_number(ip,narg,c);
 363                                 (void)putchar(',');
 364                                 modename((int)*ip);
 365                                 ip++;
 366                                 narg--;
 367                         } else if (ktr->ktr_code == SYS_kill) {
 368                                 print_number(ip,narg,c);
 369                                 (void)putchar(',');
 370                                 signame((int)*ip);
 371                                 ip++;
 372                                 narg--;
 373                         } else if (ktr->ktr_code == SYS_reboot) {
 374                                 (void)putchar('(');
 375                                 rebootoptname((int)*ip);
 376                                 ip++;
 377                                 narg--;
 378                         } else if (ktr->ktr_code == SYS_umask) {
 379                                 (void)putchar('(');
 380                                 modename((int)*ip);
 381                                 ip++;
 382                                 narg--;
 383                         } else if (ktr->ktr_code == SYS_msync) {
 384                                 print_number(ip,narg,c);
 385                                 print_number(ip,narg,c);
 386                                 (void)putchar(',');
 387                                 msyncflagsname((int)*ip);
 388                                 ip++;
 389                                 narg--;
 390                         } else if (ktr->ktr_code == SYS_mmap) {
 391                                 print_number(ip,narg,c);
 392                                 print_number(ip,narg,c);
 393                                 (void)putchar(',');
 394                                 mmapprotname ((int)*ip);
 395                                 (void)putchar(',');
 396                                 ip++;
 397                                 narg--;
 398                                 mmapflagsname ((int)*ip);
 399                                 ip++;
 400                                 narg--;
 401                         } else if (ktr->ktr_code == SYS_mprotect) {
 402                                 print_number(ip,narg,c);
 403                                 print_number(ip,narg,c);
 404                                 (void)putchar(',');
 405                                 mmapprotname ((int)*ip);
 406                                 ip++;
 407                                 narg--;
 408                         } else if (ktr->ktr_code == SYS_madvise) {
 409                                 print_number(ip,narg,c);
 410                                 print_number(ip,narg,c);
 411                                 (void)putchar(',');
 412                                 madvisebehavname((int)*ip);
 413                                 ip++;
 414                                 narg--;
 415                         } else if (ktr->ktr_code == SYS_setpriority) {
 416                                 (void)putchar('(');
 417                                 prioname((int)*ip);
 418                                 ip++;
 419                                 narg--;
 420                                 c = ',';
 421                                 print_number(ip,narg,c);
 422                                 print_number(ip,narg,c);
 423                         } else if (ktr->ktr_code == SYS_fcntl) {
 424                                 int cmd;
 425                                 int arg;
 426                                 print_number(ip,narg,c);
 427                                 cmd = *ip;
 428                                 arg = *++ip;
 429                                 (void)putchar(',');
 430                                 fcntlcmdname(cmd, arg, decimal);
 431                                 ip++;
 432                                 narg-=2;
 433                         } else if (ktr->ktr_code == SYS_socket) {
 434                                 (void)putchar('(');
 435                                 sockdomainname((int)*ip);
 436                                 ip++;
 437                                 narg--;
 438                                 (void)putchar(',');
 439                                 socktypename((int)*ip);
 440                                 ip++;
 441                                 narg--;
 442                                 c = ',';
 443                         } else if (ktr->ktr_code == SYS_setsockopt ||
 444                                    ktr->ktr_code == SYS_getsockopt) {
 445                                 print_number(ip,narg,c);
 446                                 (void)putchar(',');
 447                                 sockoptlevelname((int)*ip, decimal);
 448                                 ip++;
 449                                 narg--;
 450                                 (void)putchar(',');
 451                                 sockoptname((int)*ip);
 452                                 ip++;
 453                                 narg--;
 454                         } else if (ktr->ktr_code == SYS_lseek) {
 455                                 print_number(ip,narg,c);
 456                                 /* Hidden 'pad' argument, not in lseek(2) */
 457                                 print_number(ip,narg,c);
 458                                 print_number(ip,narg,c);
 459                                 (void)putchar(',');
 460                                 whencename ((int)*ip);
 461                                 ip++;
 462                                 narg--;
 463                         } else if (ktr->ktr_code == SYS_flock) {
 464                                 print_number(ip,narg,c);
 465                                 (void)putchar(',');
 466                                 flockname((int)*ip);
 467                                 ip++;
 468                                 narg--;
 469                         } else if (ktr->ktr_code == SYS_mkfifo ||
 470                                    ktr->ktr_code == SYS_mkdir) {
 471                                 print_number(ip,narg,c);
 472                                 (void)putchar(',');
 473                                 modename((int)*ip);
 474                                 ip++;
 475                                 narg--;
 476                         } else if (ktr->ktr_code == SYS_shutdown) {
 477                                 print_number(ip,narg,c);
 478                                 (void)putchar(',');
 479                                 shutdownhowname((int)*ip);
 480                                 ip++;
 481                                 narg--;
 482                         } else if (ktr->ktr_code == SYS_socketpair) {
 483                                 (void)putchar('(');
 484                                 sockdomainname((int)*ip);
 485                                 ip++;
 486                                 narg--;
 487                                 (void)putchar(',');
 488                                 socktypename((int)*ip);
 489                                 ip++;
 490                                 narg--;
 491                                 c = ',';
 492                         } else if (ktr->ktr_code == SYS_getrlimit ||
 493                                    ktr->ktr_code == SYS_setrlimit) {
 494                                 (void)putchar('(');
 495                                 rlimitname((int)*ip);
 496                                 ip++;
 497                                 narg--;
 498                                 c = ',';
 499                         } else if (ktr->ktr_code == SYS_quotactl) {
 500                                 print_number(ip,narg,c);
 501                                 quotactlname((int)*ip);
 502                                 ip++;
 503                                 narg--;
 504                                 c = ',';
 505                         } else if (ktr->ktr_code == SYS_rtprio) {
 506                                 (void)putchar('(');
 507                                 rtprioname((int)*ip);
 508                                 ip++;
 509                                 narg--;
 510                                 c = ',';
 511                         } else if (ktr->ktr_code == SYS___semctl) {
 512                                 print_number(ip,narg,c);
 513                                 print_number(ip,narg,c);
 514                                 semctlname((int)*ip);
 515                                 ip++;
 516                                 narg--;
 517                         } else if (ktr->ktr_code == SYS_semget) {
 518                                 print_number(ip,narg,c);
 519                                 print_number(ip,narg,c);
 520                                 semgetname((int)*ip);
 521                                 ip++;
 522                                 narg--;
 523                         } else if (ktr->ktr_code == SYS_msgctl) {
 524                                 print_number(ip,narg,c);
 525                                 shmctlname((int)*ip);
 526                                 ip++;
 527                                 narg--;
 528                         } else if (ktr->ktr_code == SYS_shmat) {
 529                                 print_number(ip,narg,c);
 530                                 print_number(ip,narg,c);
 531                                 shmatname((int)*ip);
 532                                 ip++;
 533                                 narg--;
 534                         } else if (ktr->ktr_code == SYS_shmctl) {
 535                                 print_number(ip,narg,c);
 536                                 shmctlname((int)*ip);
 537                                 ip++;
 538                                 narg--;
 539                         } else if (ktr->ktr_code == SYS_minherit) {
 540                                 print_number(ip,narg,c);
 541                                 print_number(ip,narg,c);
 542                                 minheritname((int)*ip);
 543                                 ip++;
 544                                 narg--;
 545                         } else if (ktr->ktr_code == SYS_rfork) {
 546                                 (void)putchar('(');
 547                                 rforkname((int)*ip);
 548                                 ip++;
 549                                 narg--;
 550                                 c = ',';
 551                         } else if (ktr->ktr_code == SYS_lio_listio) {
 552                                 (void)putchar('(');
 553                                 lio_listioname((int)*ip);
 554                                 ip++;
 555                                 narg--;
 556                                 c = ',';
 557                         } else if (ktr->ktr_code == SYS_mlockall) {
 558                                 (void)putchar('(');
 559                                 mlockallname((int)*ip);
 560                                 ip++;
 561                                 narg--;
 562                         } else if (ktr->ktr_code == SYS_sched_setscheduler) {
 563                                 print_number(ip,narg,c);
 564                                 schedpolicyname((int)*ip);
 565                                 ip++;
 566                                 narg--;
 567                         } else if (ktr->ktr_code == SYS_sched_get_priority_max ||
 568                                    ktr->ktr_code == SYS_sched_get_priority_min) {
 569                                 (void)putchar('(');
 570                                 schedpolicyname((int)*ip);
 571                                 ip++;
 572                                 narg--;
 573                         } else if (ktr->ktr_code == SYS_sendfile) {
 574                                 print_number(ip,narg,c);
 575                                 print_number(ip,narg,c);
 576                                 print_number(ip,narg,c);
 577                                 print_number(ip,narg,c);
 578                                 print_number(ip,narg,c);
 579                                 print_number(ip,narg,c);
 580                                 sendfileflagsname((int)*ip);
 581                                 ip++;
 582                                 narg--;
 583                         } else if (ktr->ktr_code == SYS_kldsym) {
 584                                 print_number(ip,narg,c);
 585                                 kldsymcmdname((int)*ip);
 586                                 ip++;
 587                                 narg--;
 588                         } else if (ktr->ktr_code == SYS_sigprocmask) {
 589                                 (void)putchar('(');
 590                                 sigprocmaskhowname((int)*ip);
 591                                 ip++;
 592                                 narg--;
 593                                 c = ',';
 594                         } else if (ktr->ktr_code == SYS___acl_get_file ||
 595                                    ktr->ktr_code == SYS___acl_set_file ||
 596                                    ktr->ktr_code == SYS___acl_get_fd ||
 597                                    ktr->ktr_code == SYS___acl_set_fd ||
 598                                    ktr->ktr_code == SYS___acl_delete_file ||
 599                                    ktr->ktr_code == SYS___acl_delete_fd ||
 600                                    ktr->ktr_code == SYS___acl_aclcheck_file ||
 601                                    ktr->ktr_code == SYS___acl_aclcheck_fd) {
 602                                 print_number(ip,narg,c);
 603                                 acltypename((int)*ip);
 604                                 ip++;
 605                                 narg--;
 606                         } else if (ktr->ktr_code == SYS_sigaction) {
 607                                 (void)putchar('(');
 608                                 signame((int)*ip);
 609                                 ip++;
 610                                 narg--;
 611                                 c = ',';
 612                         } else if (ktr->ktr_code == SYS_extattrctl) {
 613                                 print_number(ip,narg,c);
 614                                 extattrctlname((int)*ip);
 615                                 ip++;
 616                                 narg--;
 617                         } else if (ktr->ktr_code == SYS_ptrace) {
 618                                 if (*ip < sizeof(ptrace_ops) /
 619                                     sizeof(ptrace_ops[0]) && *ip >= 0)
 620                                         (void)printf("(%s", ptrace_ops[*ip]);
 621 #ifdef PT_GETREGS
 622                                 else if (*ip == PT_GETREGS)
 623                                         (void)printf("(%s", "PT_GETREGS");
 624 #endif
 625 #ifdef PT_SETREGS
 626                                 else if (*ip == PT_SETREGS)
 627                                         (void)printf("(%s", "PT_SETREGS");
 628 #endif
 629 #ifdef PT_GETFPREGS
 630                                 else if (*ip == PT_GETFPREGS)
 631                                         (void)printf("(%s", "PT_GETFPREGS");
 632 #endif
 633 #ifdef PT_SETFPREGS
 634                                 else if (*ip == PT_SETFPREGS)
 635                                         (void)printf("(%s", "PT_SETFPREGS");
 636 #endif
 637 #ifdef PT_GETDBREGS
 638                                 else if (*ip == PT_GETDBREGS)
 639                                         (void)printf("(%s", "PT_GETDBREGS");
 640 #endif
 641 #ifdef PT_SETDBREGS
 642                                 else if (*ip == PT_SETDBREGS)
 643                                         (void)printf("(%s", "PT_SETDBREGS");
 644 #endif
 645                                 else
 646                                         (void)printf("(%ld", (long)*ip);
 647                                 c = ',';
 648                                 ip++;
 649                                 narg--;
 650                         }
 651                 }
 652                 while (narg > 0) {
 653                         print_number(ip,narg,c);
 654                 }
 655                 (void)putchar(')');
 656         }
 657         (void)putchar('\n');
 658 }
 659
 660 ktrsysret(struct ktr_sysret *ktr)
 661 {
 662         register_t ret = ktr->ktr_retval;
 663         int error = ktr->ktr_error;
 664         int code = ktr->ktr_code;
 665
 666         if (code >= nsyscalls || code < 0)
 667                 (void)printf("[%d] ", code);
 668         else
 669                 (void)printf("%s ", syscallnames[code]);
 670
 671         if (error == 0) {
 672                 if (fancy) {
 673                         (void)printf("%d", ret);
 674                         if (ret < 0 || ret > 9)
 675                                 (void)printf("/%#lx", (long)ret);
 676                 } else {
 677                         if (decimal)
 678                                 (void)printf("%ld", (long)ret);
 679                         else
 680                                 (void)printf("%#lx", (long)ret);
 681                 }
 682         } else if (error == ERESTART)
 683                 (void)printf("RESTART");
 684         else if (error == EJUSTRETURN)
 685                 (void)printf("JUSTRETURN");
 686         else {
 687                 (void)printf("-1 errno %d", ktr->ktr_error);
 688                 if (fancy)
 689                         (void)printf(" %s", strerror(ktr->ktr_error));
 690         }
 691         (void)putchar('\n');
 692 }
 693
 694 ktrnamei(char *cp, int len)
 695 {
 696         (void)printf("\"%.*s\"\n", len, cp);
 697 }
 698
 699 ktrgenio(struct ktr_genio *ktr, int len)
 700 {
 701         int datalen = len - sizeof (struct ktr_genio);
 702         char *dp = (char *)ktr + sizeof (struct ktr_genio);
 703         char *cp;
 704         int col = 0;
 705         int width;
 706         char visbuf[5];
 707         static screenwidth = 0;
 708
 709         if (screenwidth == 0) {
 710                 struct winsize ws;
 711
 712                 if (fancy && ioctl(fileno(stderr), TIOCGWINSZ, &ws) != -1 &&
 713                     ws.ws_col > 8)
 714                         screenwidth = ws.ws_col;
 715                 else
 716                         screenwidth = 80;
 717         }
 718         printf("fd %d %s %d byte%s\n", ktr->ktr_fd,
 719                 ktr->ktr_rw == UIO_READ ? "read" : "wrote", datalen,
 720                 datalen == 1 ? "" : "s");
 721         if (maxdata && datalen > maxdata)
 722                 datalen = maxdata;
 723         (void)printf("       \"");
 724         col = 8;
 725         for (;datalen > 0; datalen--, dp++) {
 726                 (void) vis(visbuf, *dp, VIS_CSTYLE, *(dp+1));
 727                 cp = visbuf;
 728                 /*
 729                  * Keep track of printables and
 730                  * space chars (like fold(1)).
 731                  */
 732                 if (col == 0) {
 733                         (void)putchar('\t');
 734                         col = 8;
 735                 }
 736                 switch(*cp) {
 737                 case '\n':
 738                         col = 0;
 739                         (void)putchar('\n');
 740                         continue;
 741                 case '\t':
 742                         width = 8 - (col&07);
 743                         break;
 744                 default:
 745                         width = strlen(cp);
 746                 }
 747                 if (col + width > (screenwidth-2)) {
 748                         (void)printf("\\\n\t");
 749                         col = 8;
 750                 }
 751                 col += width;
 752                 do {
 753                         (void)putchar(*cp++);
 754                 } while (*cp);
 755         }
 756         if (col == 0)
 757                 (void)printf("       ");
 758         (void)printf("\"\n");
 759 }
 760
 761 char *signames[NSIG] = {
 762         "NULL", "HUP", "INT", "QUIT", "ILL", "TRAP", "IOT",     /*  1 - 6  */
 763         "EMT", "FPE", "KILL", "BUS", "SEGV", "SYS",             /*  7 - 12 */
 764         "PIPE", "ALRM",  "TERM", "URG", "STOP", "TSTP",         /* 13 - 18 */
 765         "CONT", "CHLD", "TTIN", "TTOU", "IO", "XCPU",           /* 19 - 24 */
 766         "XFSZ", "VTALRM", "PROF", "WINCH", "29", "USR1",        /* 25 - 30 */
 767         "USR2", NULL,                                           /* 31 - 32 */
 768 };
 769
 770 ktrpsig(struct ktr_psig *psig)
 771 {
 772         (void)printf("SIG%s ", signames[psig->signo]);
 773         if (psig->action == SIG_DFL)
 774                 (void)printf("SIG_DFL\n");
 775         else
 776                 (void)printf("caught handler=0x%lx mask=0x%x code=0x%x\n",
 777                     (u_long)psig->action, psig->mask, psig->code);
 778 }
 779
 780 ktrcsw(struct ktr_csw *cs)
 781 {
 782         (void)printf("%s %s\n", cs->out ? "stop" : "resume",
 783                 cs->user ? "user" : "kernel");
 784 }
 785
 786 struct utrace_malloc {
 787         void *p;
 788         size_t s;
 789         void *r;
 790 };
 791
 792 void
 793 ktruser_malloc(int len, unsigned char *p)
 794 {
 795         struct utrace_malloc *ut = (struct utrace_malloc *)p;
 796
 797         if (ut->p == NULL) {
 798                 if (ut->s == 0 && ut->r == NULL)
 799                         printf("malloc_init()\n");
 800                 else
 801                         printf("%p = malloc(%zu)\n", ut->r, ut->s);
 802         } else {
 803                 if (ut->s == 0)
 804                         printf("free(%p)\n", ut->p);
 805                 else
 806                         printf("%p = realloc(%p, %zu)\n", ut->r, ut->p, ut->s);
 807         }
 808 }
 809
 810 ktruser(int len, unsigned char *p)
 811 {
 812         if (len == sizeof(struct utrace_malloc)) {
 813                 ktruser_malloc(len, p);
 814                 return;
 815         }
 816
 817         (void)printf("%d ", len);
 818         while (len--)
 819                 (void)printf(" %02x", *p++);
 820         (void)printf("\n");
 821 }
 822
 823 usage(void)
 824 {
 825         (void)fprintf(stderr,
 826             "usage: kdump [-dnlRT] [-f trfile] [-m maxdata] [-t [cnisuw]] [-p pid]\n");
 827         exit(1);
 828 }
 829
 830 timevalsub(struct timeval *t1, struct timeval *t2)
 831 {
 832         t1->tv_sec -= t2->tv_sec;
 833         t1->tv_usec -= t2->tv_usec;
 834         timevalfix(t1);
 835 }
 836
 837 timevalfix(struct timeval *t1)
 838 {
 839         if (t1->tv_usec < 0) {
 840                 t1->tv_sec--;
 841                 t1->tv_usec += 1000000;
 842         }
 843         if (t1->tv_usec >= 1000000) {
 844                 t1->tv_sec++;
 845                 t1->tv_usec -= 1000000;
 846         }
 847 }