usr.bin/kdump/kdump.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-3-Clause
   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 #ifndef lint
  33 static const char copyright[] =
  34 "@(#) Copyright (c) 1988, 1993\n\
  35         The Regents of the University of California.  All rights reserved.\n";
  36 #endif /* not lint */
  37
  38 #ifndef lint
  39 #if 0
  40 static char sccsid[] = "@(#)kdump.c     8.1 (Berkeley) 6/6/93";
  41 #endif
  42 #endif /* not lint */
  43 #include <sys/cdefs.h>
  44 __FBSDID("$FreeBSD$");
  45
  46 #define _WANT_KERNEL_ERRNO
  47 #ifdef __LP64__
  48 #define _WANT_KEVENT32
  49 #endif
  50 #define _WANT_FREEBSD11_KEVENT
  51 #include <sys/param.h>
  52 #include <sys/capsicum.h>
  53 #include <sys/errno.h>
  54 #include <sys/time.h>
  55 #include <sys/uio.h>
  56 #include <sys/event.h>
  57 #include <sys/ktrace.h>
  58 #include <sys/ioctl.h>
  59 #include <sys/socket.h>
  60 #include <sys/stat.h>
  61 #include <sys/sysent.h>
  62 #include <sys/umtx.h>
  63 #include <sys/un.h>
  64 #include <sys/queue.h>
  65 #include <sys/wait.h>
  66 #ifdef WITH_CASPER
  67 #include <sys/nv.h>
  68 #endif
  69 #include <arpa/inet.h>
  70 #include <netinet/in.h>
  71 #include <ctype.h>
  72 #include <capsicum_helpers.h>
  73 #include <err.h>
  74 #include <grp.h>
  75 #include <inttypes.h>
  76 #include <locale.h>
  77 #include <netdb.h>
  78 #include <nl_types.h>
  79 #include <pwd.h>
  80 #include <stddef.h>
  81 #include <stdio.h>
  82 #include <stdlib.h>
  83 #include <string.h>
  84 #include <sysdecode.h>
  85 #include <time.h>
  86 #include <unistd.h>
  87 #include <vis.h>
  88 #include "ktrace.h"
  89
  90 #ifdef WITH_CASPER
  91 #include <libcasper.h>
  92
  93 #include <casper/cap_grp.h>
  94 #include <casper/cap_pwd.h>
  95 #endif
  96
  97 int fetchprocinfo(struct ktr_header *, u_int *);
  98 u_int findabi(struct ktr_header *);
  99 int fread_tail(void *, int, int);
 100 void dumpheader(struct ktr_header *, u_int);
 101 void ktrsyscall(struct ktr_syscall *, u_int);
 102 void ktrsysret(struct ktr_sysret *, u_int);
 103 void ktrnamei(char *, int);
 104 void hexdump(char *, int, int);
 105 void visdump(char *, int, int);
 106 void ktrgenio(struct ktr_genio *, int);
 107 void ktrpsig(struct ktr_psig *);
 108 void ktrcsw(struct ktr_csw *);
 109 void ktrcsw_old(struct ktr_csw_old *);
 110 void ktruser(int, void *);
 111 void ktrcaprights(cap_rights_t *);
 112 void ktritimerval(struct itimerval *it);
 113 void ktrsockaddr(struct sockaddr *);
 114 void ktrstat(struct stat *);
 115 void ktrstruct(char *, size_t);
 116 void ktrcapfail(struct ktr_cap_fail *);
 117 void ktrfault(struct ktr_fault *);
 118 void ktrfaultend(struct ktr_faultend *);
 119 void ktrkevent(struct kevent *);
 120 void ktrstructarray(struct ktr_struct_array *, size_t);
 121 void usage(void);
 122
 123 #define TIMESTAMP_NONE          0x0
 124 #define TIMESTAMP_ABSOLUTE      0x1
 125 #define TIMESTAMP_ELAPSED       0x2
 126 #define TIMESTAMP_RELATIVE      0x4
 127
 128 static bool abiflag, decimal, fancy = true, resolv, suppressdata, syscallno,
 129     tail, threads;
 130 static int timestamp, maxdata;
 131 static const char *tracefile = DEF_TRACEFILE;
 132 static struct ktr_header ktr_header;
 133
 134 #define TIME_FORMAT     "%b %e %T %Y"
 135 #define eqs(s1, s2)     (strcmp((s1), (s2)) == 0)
 136
 137 #define print_number64(first,i,n,c) do {                                \
 138         uint64_t __v;                                                   \
 139                                                                         \
 140         if (quad_align && (((ptrdiff_t)((i) - (first))) & 1) == 1) {    \
 141                 (i)++;                                                  \
 142                 (n)--;                                                  \
 143         }                                                               \
 144         if (quad_slots == 2)                                            \
 145                 __v = (uint64_t)(uint32_t)(i)[0] |                      \
 146                     ((uint64_t)(uint32_t)(i)[1]) << 32;                 \
 147         else                                                            \
 148                 __v = (uint64_t)*(i);                                   \
 149         if (decimal)                                                    \
 150                 printf("%c%jd", (c), (intmax_t)__v);                    \
 151         else                                                            \
 152                 printf("%c%#jx", (c), (uintmax_t)__v);                  \
 153         (i) += quad_slots;                                              \
 154         (n) -= quad_slots;                                              \
 155         (c) = ',';                                                      \
 156 } while (0)
 157
 158 #define print_number(i,n,c) do {                                        \
 159         if (decimal)                                                    \
 160                 printf("%c%jd", c, (intmax_t)*i);                       \
 161         else                                                            \
 162                 printf("%c%#jx", c, (uintmax_t)(u_register_t)*i);       \
 163         i++;                                                            \
 164         n--;                                                            \
 165         c = ',';                                                        \
 166 } while (0)
 167
 168 struct proc_info
 169 {
 170         TAILQ_ENTRY(proc_info)  info;
 171         u_int                   sv_flags;
 172         pid_t                   pid;
 173 };
 174
 175 static TAILQ_HEAD(trace_procs, proc_info) trace_procs;
 176
 177 #ifdef WITH_CASPER
 178 static cap_channel_t *cappwd, *capgrp;
 179
 180 static int
 181 cappwdgrp_setup(cap_channel_t **cappwdp, cap_channel_t **capgrpp)
 182 {
 183         cap_channel_t *capcas, *cappwdloc, *capgrploc;
 184         const char *cmds[1], *fields[1];
 185
 186         capcas = cap_init();
 187         if (capcas == NULL) {
 188                 err(1, "unable to create casper process");
 189                 exit(1);
 190         }
 191         cappwdloc = cap_service_open(capcas, "system.pwd");
 192         capgrploc = cap_service_open(capcas, "system.grp");
 193         /* Casper capability no longer needed. */
 194         cap_close(capcas);
 195         if (cappwdloc == NULL || capgrploc == NULL) {
 196                 if (cappwdloc == NULL)
 197                         warn("unable to open system.pwd service");
 198                 if (capgrploc == NULL)
 199                         warn("unable to open system.grp service");
 200                 exit(1);
 201         }
 202         /* Limit system.pwd to only getpwuid() function and pw_name field. */
 203         cmds[0] = "getpwuid";
 204         if (cap_pwd_limit_cmds(cappwdloc, cmds, 1) < 0)
 205                 err(1, "unable to limit system.pwd service");
 206         fields[0] = "pw_name";
 207         if (cap_pwd_limit_fields(cappwdloc, fields, 1) < 0)
 208                 err(1, "unable to limit system.pwd service");
 209         /* Limit system.grp to only getgrgid() function and gr_name field. */
 210         cmds[0] = "getgrgid";
 211         if (cap_grp_limit_cmds(capgrploc, cmds, 1) < 0)
 212                 err(1, "unable to limit system.grp service");
 213         fields[0] = "gr_name";
 214         if (cap_grp_limit_fields(capgrploc, fields, 1) < 0)
 215                 err(1, "unable to limit system.grp service");
 216
 217         *cappwdp = cappwdloc;
 218         *capgrpp = capgrploc;
 219         return (0);
 220 }
 221 #endif  /* WITH_CASPER */
 222
 223 static void
 224 print_integer_arg(const char *(*decoder)(int), int value)
 225 {
 226         const char *str;
 227
 228         str = decoder(value);
 229         if (str != NULL)
 230                 printf("%s", str);
 231         else {
 232                 if (decimal)
 233                         printf("<invalid=%d>", value);
 234                 else
 235                         printf("<invalid=%#x>", value);
 236         }
 237 }
 238
 239 /* Like print_integer_arg but unknown values are treated as valid. */
 240 static void
 241 print_integer_arg_valid(const char *(*decoder)(int), int value)
 242 {
 243         const char *str;
 244
 245         str = decoder(value);
 246         if (str != NULL)
 247                 printf("%s", str);
 248         else {
 249                 if (decimal)
 250                         printf("%d", value);
 251                 else
 252                         printf("%#x", value);
 253         }
 254 }
 255
 256 static void
 257 print_mask_arg(bool (*decoder)(FILE *, int, int *), int value)
 258 {
 259         bool invalid;
 260         int rem;
 261
 262         printf("%#x<", value);
 263         invalid = !decoder(stdout, value, &rem);
 264         printf(">");
 265         if (invalid)
 266                 printf("<invalid>%u", rem);
 267 }
 268
 269 static void
 270 print_mask_arg0(bool (*decoder)(FILE *, int, int *), int value)
 271 {
 272         bool invalid;
 273         int rem;
 274
 275         if (value == 0) {
 276                 printf("0");
 277                 return;
 278         }
 279         printf("%#x<", value);
 280         invalid = !decoder(stdout, value, &rem);
 281         printf(">");
 282         if (invalid)
 283                 printf("<invalid>%u", rem);
 284 }
 285
 286 static void
 287 decode_fileflags(fflags_t value)
 288 {
 289         bool invalid;
 290         fflags_t rem;
 291
 292         if (value == 0) {
 293                 printf("0");
 294                 return;
 295         }
 296         printf("%#x<", value);
 297         invalid = !sysdecode_fileflags(stdout, value, &rem);
 298         printf(">");
 299         if (invalid)
 300                 printf("<invalid>%u", rem);
 301 }
 302
 303 static void
 304 decode_filemode(int value)
 305 {
 306         bool invalid;
 307         int rem;
 308
 309         if (value == 0) {
 310                 printf("0");
 311                 return;
 312         }
 313         printf("%#o<", value);
 314         invalid = !sysdecode_filemode(stdout, value, &rem);
 315         printf(">");
 316         if (invalid)
 317                 printf("<invalid>%u", rem);
 318 }
 319
 320 static void
 321 print_mask_arg32(bool (*decoder)(FILE *, uint32_t, uint32_t *), uint32_t value)
 322 {
 323         bool invalid;
 324         uint32_t rem;
 325
 326         printf("%#x<", value);
 327         invalid = !decoder(stdout, value, &rem);
 328         printf(">");
 329         if (invalid)
 330                 printf("<invalid>%u", rem);
 331 }
 332
 333 static void
 334 print_mask_argul(bool (*decoder)(FILE *, u_long, u_long *), u_long value)
 335 {
 336         bool invalid;
 337         u_long rem;
 338
 339         if (value == 0) {
 340                 printf("0");
 341                 return;
 342         }
 343         printf("%#lx<", value);
 344         invalid = !decoder(stdout, value, &rem);
 345         printf(">");
 346         if (invalid)
 347                 printf("<invalid>%lu", rem);
 348 }
 349
 350 int
 351 main(int argc, char *argv[])
 352 {
 353         int ch, ktrlen, size;
 354         void *m;
 355         int trpoints = ALL_POINTS;
 356         int drop_logged;
 357         pid_t pid = 0;
 358         u_int sv_flags;
 359
 360         setlocale(LC_CTYPE, "");
 361
 362         timestamp = TIMESTAMP_NONE;
 363
 364         while ((ch = getopt(argc,argv,"f:dElm:np:AHRrSsTt:")) != -1)
 365                 switch (ch) {
 366                 case 'A':
 367                         abiflag = true;
 368                         break;
 369                 case 'f':
 370                         tracefile = optarg;
 371                         break;
 372                 case 'd':
 373                         decimal = true;
 374                         break;
 375                 case 'l':
 376                         tail = true;
 377                         break;
 378                 case 'm':
 379                         maxdata = atoi(optarg);
 380                         break;
 381                 case 'n':
 382                         fancy = false;
 383                         break;
 384                 case 'p':
 385                         pid = atoi(optarg);
 386                         break;
 387                 case 'r':
 388                         resolv = true;
 389                         break;
 390                 case 'S':
 391                         syscallno = true;
 392                         break;
 393                 case 's':
 394                         suppressdata = true;
 395                         break;
 396                 case 'E':
 397                         timestamp |= TIMESTAMP_ELAPSED;
 398                         break;
 399                 case 'H':
 400                         threads = true;
 401                         break;
 402                 case 'R':
 403                         timestamp |= TIMESTAMP_RELATIVE;
 404                         break;
 405                 case 'T':
 406                         timestamp |= TIMESTAMP_ABSOLUTE;
 407                         break;
 408                 case 't':
 409                         trpoints = getpoints(optarg);
 410                         if (trpoints < 0)
 411                                 errx(1, "unknown trace point in %s", optarg);
 412                         break;
 413                 default:
 414                         usage();
 415                 }
 416
 417         if (argc > optind)
 418                 usage();
 419
 420         m = malloc(size = 1025);
 421         if (m == NULL)
 422                 errx(1, "%s", strerror(ENOMEM));
 423         if (strcmp(tracefile, "-") != 0)
 424                 if (!freopen(tracefile, "r", stdin))
 425                         err(1, "%s", tracefile);
 426
 427         caph_cache_catpages();
 428         caph_cache_tzdata();
 429
 430 #ifdef WITH_CASPER
 431         if (resolv) {
 432                 if (cappwdgrp_setup(&cappwd, &capgrp) < 0) {
 433                         cappwd = NULL;
 434                         capgrp = NULL;
 435                 }
 436         }
 437         if (!resolv || (cappwd != NULL && capgrp != NULL)) {
 438                 if (caph_enter() < 0)
 439                         err(1, "unable to enter capability mode");
 440         }
 441 #else
 442         if (!resolv) {
 443                 if (caph_enter() < 0)
 444                         err(1, "unable to enter capability mode");
 445         }
 446 #endif
 447         if (caph_limit_stdio() == -1)
 448                 err(1, "unable to limit stdio");
 449
 450         TAILQ_INIT(&trace_procs);
 451         drop_logged = 0;
 452         while (fread_tail(&ktr_header, sizeof(struct ktr_header), 1)) {
 453                 if (ktr_header.ktr_type & KTR_DROP) {
 454                         ktr_header.ktr_type &= ~KTR_DROP;
 455                         if (!drop_logged && threads) {
 456                                 printf(
 457                                     "%6jd %6jd %-8.*s Events dropped.\n",
 458                                     (intmax_t)ktr_header.ktr_pid,
 459                                     ktr_header.ktr_tid > 0 ?
 460                                     (intmax_t)ktr_header.ktr_tid : 0,
 461                                     MAXCOMLEN, ktr_header.ktr_comm);
 462                                 drop_logged = 1;
 463                         } else if (!drop_logged) {
 464                                 printf("%6jd %-8.*s Events dropped.\n",
 465                                     (intmax_t)ktr_header.ktr_pid, MAXCOMLEN,
 466                                     ktr_header.ktr_comm);
 467                                 drop_logged = 1;
 468                         }
 469                 }
 470                 if ((ktrlen = ktr_header.ktr_len) < 0)
 471                         errx(1, "bogus length 0x%x", ktrlen);
 472                 if (ktrlen > size) {
 473                         m = realloc(m, ktrlen+1);
 474                         if (m == NULL)
 475                                 errx(1, "%s", strerror(ENOMEM));
 476                         size = ktrlen;
 477                 }
 478                 if (ktrlen && fread_tail(m, ktrlen, 1) == 0)
 479                         errx(1, "data too short");
 480                 if (fetchprocinfo(&ktr_header, (u_int *)m) != 0)
 481                         continue;
 482                 if (pid && ktr_header.ktr_pid != pid &&
 483                     ktr_header.ktr_tid != pid)
 484                         continue;
 485                 if ((trpoints & (1<<ktr_header.ktr_type)) == 0)
 486                         continue;
 487                 sv_flags = findabi(&ktr_header);
 488                 dumpheader(&ktr_header, sv_flags);
 489                 drop_logged = 0;
 490                 switch (ktr_header.ktr_type) {
 491                 case KTR_SYSCALL:
 492                         ktrsyscall((struct ktr_syscall *)m, sv_flags);
 493                         break;
 494                 case KTR_SYSRET:
 495                         ktrsysret((struct ktr_sysret *)m, sv_flags);
 496                         break;
 497                 case KTR_NAMEI:
 498                 case KTR_SYSCTL:
 499                         ktrnamei(m, ktrlen);
 500                         break;
 501                 case KTR_GENIO:
 502                         ktrgenio((struct ktr_genio *)m, ktrlen);
 503                         break;
 504                 case KTR_PSIG:
 505                         ktrpsig((struct ktr_psig *)m);
 506                         break;
 507                 case KTR_CSW:
 508                         if (ktrlen == sizeof(struct ktr_csw_old))
 509                                 ktrcsw_old((struct ktr_csw_old *)m);
 510                         else
 511                                 ktrcsw((struct ktr_csw *)m);
 512                         break;
 513                 case KTR_USER:
 514                         ktruser(ktrlen, m);
 515                         break;
 516                 case KTR_STRUCT:
 517                         ktrstruct(m, ktrlen);
 518                         break;
 519                 case KTR_CAPFAIL:
 520                         ktrcapfail((struct ktr_cap_fail *)m);
 521                         break;
 522                 case KTR_FAULT:
 523                         ktrfault((struct ktr_fault *)m);
 524                         break;
 525                 case KTR_FAULTEND:
 526                         ktrfaultend((struct ktr_faultend *)m);
 527                         break;
 528                 case KTR_STRUCT_ARRAY:
 529                         ktrstructarray((struct ktr_struct_array *)m, ktrlen);
 530                         break;
 531                 default:
 532                         printf("\n");
 533                         break;
 534                 }
 535                 if (tail)
 536                         fflush(stdout);
 537         }
 538         return 0;
 539 }
 540
 541 int
 542 fread_tail(void *buf, int size, int num)
 543 {
 544         int i;
 545
 546         while ((i = fread(buf, size, num, stdin)) == 0 && tail) {
 547                 sleep(1);
 548                 clearerr(stdin);
 549         }
 550         return (i);
 551 }
 552
 553 int
 554 fetchprocinfo(struct ktr_header *kth, u_int *flags)
 555 {
 556         struct proc_info *pi;
 557
 558         switch (kth->ktr_type) {
 559         case KTR_PROCCTOR:
 560                 TAILQ_FOREACH(pi, &trace_procs, info) {
 561                         if (pi->pid == kth->ktr_pid) {
 562                                 TAILQ_REMOVE(&trace_procs, pi, info);
 563                                 break;
 564                         }
 565                 }
 566                 pi = malloc(sizeof(struct proc_info));
 567                 if (pi == NULL)
 568                         errx(1, "%s", strerror(ENOMEM));
 569                 pi->sv_flags = *flags;
 570                 pi->pid = kth->ktr_pid;
 571                 TAILQ_INSERT_TAIL(&trace_procs, pi, info);
 572                 return (1);
 573
 574         case KTR_PROCDTOR:
 575                 TAILQ_FOREACH(pi, &trace_procs, info) {
 576                         if (pi->pid == kth->ktr_pid) {
 577                                 TAILQ_REMOVE(&trace_procs, pi, info);
 578                                 free(pi);
 579                                 break;
 580                         }
 581                 }
 582                 return (1);
 583         }
 584
 585         return (0);
 586 }
 587
 588 u_int
 589 findabi(struct ktr_header *kth)
 590 {
 591         struct proc_info *pi;
 592
 593         TAILQ_FOREACH(pi, &trace_procs, info) {
 594                 if (pi->pid == kth->ktr_pid) {
 595                         return (pi->sv_flags);
 596                 }
 597         }
 598         return (0);
 599 }
 600
 601 void
 602 dumpheader(struct ktr_header *kth, u_int sv_flags)
 603 {
 604         static char unknown[64];
 605         static struct timeval prevtime, prevtime_e;
 606         struct timeval temp;
 607         const char *abi;
 608         const char *arch;
 609         const char *type;
 610         const char *sign;
 611
 612         switch (kth->ktr_type) {
 613         case KTR_SYSCALL:
 614                 type = "CALL";
 615                 break;
 616         case KTR_SYSRET:
 617                 type = "RET ";
 618                 break;
 619         case KTR_NAMEI:
 620                 type = "NAMI";
 621                 break;
 622         case KTR_GENIO:
 623                 type = "GIO ";
 624                 break;
 625         case KTR_PSIG:
 626                 type = "PSIG";
 627                 break;
 628         case KTR_CSW:
 629                 type = "CSW ";
 630                 break;
 631         case KTR_USER:
 632                 type = "USER";
 633                 break;
 634         case KTR_STRUCT:
 635         case KTR_STRUCT_ARRAY:
 636                 type = "STRU";
 637                 break;
 638         case KTR_SYSCTL:
 639                 type = "SCTL";
 640                 break;
 641         case KTR_CAPFAIL:
 642                 type = "CAP ";
 643                 break;
 644         case KTR_FAULT:
 645                 type = "PFLT";
 646                 break;
 647         case KTR_FAULTEND:
 648                 type = "PRET";
 649                 break;
 650         default:
 651                 sprintf(unknown, "UNKNOWN(%d)", kth->ktr_type);
 652                 type = unknown;
 653         }
 654
 655         /*
 656          * The ktr_tid field was previously the ktr_buffer field, which held
 657          * the kernel pointer value for the buffer associated with data
 658          * following the record header.  It now holds a threadid, but only
 659          * for trace files after the change.  Older trace files still contain
 660          * kernel pointers.  Detect this and suppress the results by printing
 661          * negative tid's as 0.
 662          */
 663         if (threads)
 664                 printf("%6jd %6jd %-8.*s ", (intmax_t)kth->ktr_pid,
 665                     kth->ktr_tid > 0 ? (intmax_t)kth->ktr_tid : 0,
 666                     MAXCOMLEN, kth->ktr_comm);
 667         else
 668                 printf("%6jd %-8.*s ", (intmax_t)kth->ktr_pid, MAXCOMLEN,
 669                     kth->ktr_comm);
 670         if (timestamp) {
 671                 if (timestamp & TIMESTAMP_ABSOLUTE) {
 672                         printf("%jd.%06ld ", (intmax_t)kth->ktr_time.tv_sec,
 673                             kth->ktr_time.tv_usec);
 674                 }
 675                 if (timestamp & TIMESTAMP_ELAPSED) {
 676                         if (prevtime_e.tv_sec == 0)
 677                                 prevtime_e = kth->ktr_time;
 678                         timersub(&kth->ktr_time, &prevtime_e, &temp);
 679                         printf("%jd.%06ld ", (intmax_t)temp.tv_sec,
 680                             temp.tv_usec);
 681                 }
 682                 if (timestamp & TIMESTAMP_RELATIVE) {
 683                         if (prevtime.tv_sec == 0)
 684                                 prevtime = kth->ktr_time;
 685                         if (timercmp(&kth->ktr_time, &prevtime, <)) {
 686                                 timersub(&prevtime, &kth->ktr_time, &temp);
 687                                 sign = "-";
 688                         } else {
 689                                 timersub(&kth->ktr_time, &prevtime, &temp);
 690                                 sign = "";
 691                         }
 692                         prevtime = kth->ktr_time;
 693                         printf("%s%jd.%06ld ", sign, (intmax_t)temp.tv_sec,
 694                             temp.tv_usec);
 695                 }
 696         }
 697         printf("%s  ", type);
 698         if (abiflag != 0) {
 699                 switch (sv_flags & SV_ABI_MASK) {
 700                 case SV_ABI_LINUX:
 701                         abi = "L";
 702                         break;
 703                 case SV_ABI_FREEBSD:
 704                         abi = "F";
 705                         break;
 706                 case SV_ABI_CLOUDABI:
 707                         abi = "C";
 708                         break;
 709                 default:
 710                         abi = "U";
 711                         break;
 712                 }
 713
 714                 if ((sv_flags & SV_LP64) != 0)
 715                         arch = "64";
 716                 else if ((sv_flags & SV_ILP32) != 0)
 717                         arch = "32";
 718                 else
 719                         arch = "00";
 720
 721                 printf("%s%s  ", abi, arch);
 722         }
 723 }
 724
 725 #include <sys/syscall.h>
 726
 727 static void
 728 ioctlname(unsigned long val)
 729 {
 730         const char *str;
 731
 732         str = sysdecode_ioctlname(val);
 733         if (str != NULL)
 734                 printf("%s", str);
 735         else if (decimal)
 736                 printf("%lu", val);
 737         else
 738                 printf("%#lx", val);
 739 }
 740
 741 static enum sysdecode_abi
 742 syscallabi(u_int sv_flags)
 743 {
 744
 745         if (sv_flags == 0)
 746                 return (SYSDECODE_ABI_FREEBSD);
 747         switch (sv_flags & SV_ABI_MASK) {
 748         case SV_ABI_FREEBSD:
 749                 return (SYSDECODE_ABI_FREEBSD);
 750         case SV_ABI_LINUX:
 751 #ifdef __LP64__
 752                 if (sv_flags & SV_ILP32)
 753                         return (SYSDECODE_ABI_LINUX32);
 754 #endif
 755                 return (SYSDECODE_ABI_LINUX);
 756         case SV_ABI_CLOUDABI:
 757                 return (SYSDECODE_ABI_CLOUDABI64);
 758         default:
 759                 return (SYSDECODE_ABI_UNKNOWN);
 760         }
 761 }
 762
 763 static void
 764 syscallname(u_int code, u_int sv_flags)
 765 {
 766         const char *name;
 767
 768         name = sysdecode_syscallname(syscallabi(sv_flags), code);
 769         if (name == NULL)
 770                 printf("[%d]", code);
 771         else {
 772                 printf("%s", name);
 773                 if (syscallno)
 774                         printf("[%d]", code);
 775         }
 776 }
 777
 778 static void
 779 print_signal(int signo)
 780 {
 781         const char *signame;
 782
 783         signame = sysdecode_signal(signo);
 784         if (signame != NULL)
 785                 printf("%s", signame);
 786         else
 787                 printf("SIG %d", signo);
 788 }
 789
 790 void
 791 ktrsyscall(struct ktr_syscall *ktr, u_int sv_flags)
 792 {
 793         int narg = ktr->ktr_narg;
 794         register_t *ip, *first;
 795         intmax_t arg;
 796         int quad_align, quad_slots;
 797
 798         syscallname(ktr->ktr_code, sv_flags);
 799         ip = first = &ktr->ktr_args[0];
 800         if (narg) {
 801                 char c = '(';
 802                 if (fancy &&
 803                     (sv_flags == 0 ||
 804                     (sv_flags & SV_ABI_MASK) == SV_ABI_FREEBSD)) {
 805                         quad_align = 0;
 806                         if (sv_flags & SV_ILP32) {
 807 #ifdef __powerpc__
 808                                 quad_align = 1;
 809 #endif
 810                                 quad_slots = 2;
 811                         } else
 812                                 quad_slots = 1;
 813                         switch (ktr->ktr_code) {
 814                         case SYS_bindat:
 815                         case SYS_chflagsat:
 816                         case SYS_connectat:
 817                         case SYS_faccessat:
 818                         case SYS_fchmodat:
 819                         case SYS_fchownat:
 820                         case SYS_fstatat:
 821                         case SYS_futimesat:
 822                         case SYS_linkat:
 823                         case SYS_mkdirat:
 824                         case SYS_mkfifoat:
 825                         case SYS_mknodat:
 826                         case SYS_openat:
 827                         case SYS_readlinkat:
 828                         case SYS_renameat:
 829                         case SYS_unlinkat:
 830                         case SYS_utimensat:
 831                                 putchar('(');
 832                                 print_integer_arg_valid(sysdecode_atfd, *ip);
 833                                 c = ',';
 834                                 ip++;
 835                                 narg--;
 836                                 break;
 837                         }
 838                         switch (ktr->ktr_code) {
 839                         case SYS_ioctl: {
 840                                 print_number(ip, narg, c);
 841                                 putchar(c);
 842                                 ioctlname(*ip);
 843                                 c = ',';
 844                                 ip++;
 845                                 narg--;
 846                                 break;
 847                         }
 848                         case SYS_ptrace:
 849                                 putchar('(');
 850                                 print_integer_arg(sysdecode_ptrace_request, *ip);
 851                                 c = ',';
 852                                 ip++;
 853                                 narg--;
 854                                 break;
 855                         case SYS_access:
 856                         case SYS_eaccess:
 857                         case SYS_faccessat:
 858                                 print_number(ip, narg, c);
 859                                 putchar(',');
 860                                 print_mask_arg(sysdecode_access_mode, *ip);
 861                                 ip++;
 862                                 narg--;
 863                                 break;
 864                         case SYS_open:
 865                         case SYS_openat:
 866                                 print_number(ip, narg, c);
 867                                 putchar(',');
 868                                 print_mask_arg(sysdecode_open_flags, ip[0]);
 869                                 if ((ip[0] & O_CREAT) == O_CREAT) {
 870                                         putchar(',');
 871                                         decode_filemode(ip[1]);
 872                                 }
 873                                 ip += 2;
 874                                 narg -= 2;
 875                                 break;
 876                         case SYS_wait4:
 877                                 print_number(ip, narg, c);
 878                                 print_number(ip, narg, c);
 879                                 putchar(',');
 880                                 print_mask_arg0(sysdecode_wait4_options, *ip);
 881                                 ip++;
 882                                 narg--;
 883                                 break;
 884                         case SYS_wait6:
 885                                 putchar('(');
 886                                 print_integer_arg(sysdecode_idtype, *ip);
 887                                 c = ',';
 888                                 ip++;
 889                                 narg--;
 890                                 print_number64(first, ip, narg, c);
 891                                 print_number(ip, narg, c);
 892                                 putchar(',');
 893                                 print_mask_arg(sysdecode_wait6_options, *ip);
 894                                 ip++;
 895                                 narg--;
 896                                 break;
 897                         case SYS_chmod:
 898                         case SYS_fchmod:
 899                         case SYS_lchmod:
 900                         case SYS_fchmodat:
 901                                 print_number(ip, narg, c);
 902                                 putchar(',');
 903                                 decode_filemode(*ip);
 904                                 ip++;
 905                                 narg--;
 906                                 break;
 907                         case SYS_mknodat:
 908                                 print_number(ip, narg, c);
 909                                 putchar(',');
 910                                 decode_filemode(*ip);
 911                                 ip++;
 912                                 narg--;
 913                                 break;
 914                         case SYS_getfsstat:
 915                                 print_number(ip, narg, c);
 916                                 print_number(ip, narg, c);
 917                                 putchar(',');
 918                                 print_integer_arg(sysdecode_getfsstat_mode, *ip);
 919                                 ip++;
 920                                 narg--;
 921                                 break;
 922                         case SYS_mount:
 923                                 print_number(ip, narg, c);
 924                                 print_number(ip, narg, c);
 925                                 putchar(',');
 926                                 print_mask_arg(sysdecode_mount_flags, *ip);
 927                                 ip++;
 928                                 narg--;
 929                                 break;
 930                         case SYS_unmount:
 931                                 print_number(ip, narg, c);
 932                                 putchar(',');
 933                                 print_mask_arg(sysdecode_mount_flags, *ip);
 934                                 ip++;
 935                                 narg--;
 936                                 break;
 937                         case SYS_recvmsg:
 938                         case SYS_sendmsg:
 939                                 print_number(ip, narg, c);
 940                                 print_number(ip, narg, c);
 941                                 putchar(',');
 942                                 print_mask_arg0(sysdecode_msg_flags, *ip);
 943                                 ip++;
 944                                 narg--;
 945                                 break;
 946                         case SYS_recvfrom:
 947                         case SYS_sendto:
 948                                 print_number(ip, narg, c);
 949                                 print_number(ip, narg, c);
 950                                 print_number(ip, narg, c);
 951                                 putchar(',');
 952                                 print_mask_arg0(sysdecode_msg_flags, *ip);
 953                                 ip++;
 954                                 narg--;
 955                                 break;
 956                         case SYS_chflags:
 957                         case SYS_chflagsat:
 958                         case SYS_fchflags:
 959                         case SYS_lchflags:
 960                                 print_number(ip, narg, c);
 961                                 putchar(',');
 962                                 decode_fileflags(*ip);
 963                                 ip++;
 964                                 narg--;
 965                                 break;
 966                         case SYS_kill:
 967                                 print_number(ip, narg, c);
 968                                 putchar(',');
 969                                 print_signal(*ip);
 970                                 ip++;
 971                                 narg--;
 972                                 break;
 973                         case SYS_reboot:
 974                                 putchar('(');
 975                                 print_mask_arg(sysdecode_reboot_howto, *ip);
 976                                 ip++;
 977                                 narg--;
 978                                 break;
 979                         case SYS_umask:
 980                                 putchar('(');
 981                                 decode_filemode(*ip);
 982                                 ip++;
 983                                 narg--;
 984                                 break;
 985                         case SYS_msync:
 986                                 print_number(ip, narg, c);
 987                                 print_number(ip, narg, c);
 988                                 putchar(',');
 989                                 print_mask_arg(sysdecode_msync_flags, *ip);
 990                                 ip++;
 991                                 narg--;
 992                                 break;
 993 #ifdef SYS_freebsd6_mmap
 994                         case SYS_freebsd6_mmap:
 995                                 print_number(ip, narg, c);
 996                                 print_number(ip, narg, c);
 997                                 putchar(',');
 998                                 print_mask_arg(sysdecode_mmap_prot, *ip);
 999                                 putchar(',');
1000                                 ip++;
1001                                 narg--;
1002                                 print_mask_arg(sysdecode_mmap_flags, *ip);
1003                                 ip++;
1004                                 narg--;
1005                                 break;
1006 #endif
1007                         case SYS_mmap:
1008                                 print_number(ip, narg, c);
1009                                 print_number(ip, narg, c);
1010                                 putchar(',');
1011                                 print_mask_arg(sysdecode_mmap_prot, *ip);
1012                                 putchar(',');
1013                                 ip++;
1014                                 narg--;
1015                                 print_mask_arg(sysdecode_mmap_flags, *ip);
1016                                 ip++;
1017                                 narg--;
1018                                 break;
1019                         case SYS_mprotect:
1020                                 print_number(ip, narg, c);
1021                                 print_number(ip, narg, c);
1022                                 putchar(',');
1023                                 print_mask_arg(sysdecode_mmap_prot, *ip);
1024                                 ip++;
1025                                 narg--;
1026                                 break;
1027                         case SYS_madvise:
1028                                 print_number(ip, narg, c);
1029                                 print_number(ip, narg, c);
1030                                 putchar(',');
1031                                 print_integer_arg(sysdecode_madvice, *ip);
1032                                 ip++;
1033                                 narg--;
1034                                 break;
1035                         case SYS_pathconf:
1036                         case SYS_lpathconf:
1037                         case SYS_fpathconf:
1038                                 print_number(ip, narg, c);
1039                                 putchar(',');
1040                                 print_integer_arg(sysdecode_pathconf_name, *ip);
1041                                 ip++;
1042                                 narg--;
1043                                 break;
1044                         case SYS_getpriority:
1045                         case SYS_setpriority:
1046                                 putchar('(');
1047                                 print_integer_arg(sysdecode_prio_which, *ip);
1048                                 c = ',';
1049                                 ip++;
1050                                 narg--;
1051                                 break;
1052                         case SYS_fcntl:
1053                                 print_number(ip, narg, c);
1054                                 putchar(',');
1055                                 print_integer_arg(sysdecode_fcntl_cmd, ip[0]);
1056                                 if (sysdecode_fcntl_arg_p(ip[0])) {
1057                                         putchar(',');
1058                                         if (ip[0] == F_SETFL)
1059                                                 print_mask_arg(
1060                                                     sysdecode_fcntl_fileflags,
1061                                                         ip[1]);
1062                                         else
1063                                                 sysdecode_fcntl_arg(stdout,
1064                                                     ip[0], ip[1],
1065                                                     decimal ? 10 : 16);
1066                                 }
1067                                 ip += 2;
1068                                 narg -= 2;
1069                                 break;
1070                         case SYS_socket: {
1071                                 int sockdomain;
1072                                 putchar('(');
1073                                 sockdomain = *ip;
1074                                 print_integer_arg(sysdecode_socketdomain,
1075                                     sockdomain);
1076                                 ip++;
1077                                 narg--;
1078                                 putchar(',');
1079                                 print_mask_arg(sysdecode_socket_type, *ip);
1080                                 ip++;
1081                                 narg--;
1082                                 if (sockdomain == PF_INET ||
1083                                     sockdomain == PF_INET6) {
1084                                         putchar(',');
1085                                         print_integer_arg(sysdecode_ipproto,
1086                                             *ip);
1087                                         ip++;
1088                                         narg--;
1089                                 }
1090                                 c = ',';
1091                                 break;
1092                         }
1093                         case SYS_setsockopt:
1094                         case SYS_getsockopt: {
1095                                 const char *str;
1096
1097                                 print_number(ip, narg, c);
1098                                 putchar(',');
1099                                 print_integer_arg_valid(sysdecode_sockopt_level,
1100                                     *ip);
1101                                 str = sysdecode_sockopt_name(ip[0], ip[1]);
1102                                 if (str != NULL) {
1103                                         printf(",%s", str);
1104                                         ip++;
1105                                         narg--;
1106                                 }
1107                                 ip++;
1108                                 narg--;
1109                                 break;
1110                         }
1111 #ifdef SYS_freebsd6_lseek
1112                         case SYS_freebsd6_lseek:
1113                                 print_number(ip, narg, c);
1114                                 /* Hidden 'pad' argument, not in lseek(2) */
1115                                 print_number(ip, narg, c);
1116                                 print_number64(first, ip, narg, c);
1117                                 putchar(',');
1118                                 print_integer_arg(sysdecode_whence, *ip);
1119                                 ip++;
1120                                 narg--;
1121                                 break;
1122 #endif
1123                         case SYS_lseek:
1124                                 print_number(ip, narg, c);
1125                                 print_number64(first, ip, narg, c);
1126                                 putchar(',');
1127                                 print_integer_arg(sysdecode_whence, *ip);
1128                                 ip++;
1129                                 narg--;
1130                                 break;
1131                         case SYS_flock:
1132                                 print_number(ip, narg, c);
1133                                 putchar(',');
1134                                 print_mask_arg(sysdecode_flock_operation, *ip);
1135                                 ip++;
1136                                 narg--;
1137                                 break;
1138                         case SYS_mkfifo:
1139                         case SYS_mkfifoat:
1140                         case SYS_mkdir:
1141                         case SYS_mkdirat:
1142                                 print_number(ip, narg, c);
1143                                 putchar(',');
1144                                 decode_filemode(*ip);
1145                                 ip++;
1146                                 narg--;
1147                                 break;
1148                         case SYS_shutdown:
1149                                 print_number(ip, narg, c);
1150                                 putchar(',');
1151                                 print_integer_arg(sysdecode_shutdown_how, *ip);
1152                                 ip++;
1153                                 narg--;
1154                                 break;
1155                         case SYS_socketpair:
1156                                 putchar('(');
1157                                 print_integer_arg(sysdecode_socketdomain, *ip);
1158                                 ip++;
1159                                 narg--;
1160                                 putchar(',');
1161                                 print_mask_arg(sysdecode_socket_type, *ip);
1162                                 ip++;
1163                                 narg--;
1164                                 c = ',';
1165                                 break;
1166                         case SYS_getrlimit:
1167                         case SYS_setrlimit:
1168                                 putchar('(');
1169                                 print_integer_arg(sysdecode_rlimit, *ip);
1170                                 ip++;
1171                                 narg--;
1172                                 c = ',';
1173                                 break;
1174                         case SYS_getrusage:
1175                                 putchar('(');
1176                                 print_integer_arg(sysdecode_getrusage_who, *ip);
1177                                 ip++;
1178                                 narg--;
1179                                 c = ',';
1180                                 break;
1181                         case SYS_quotactl:
1182                                 print_number(ip, narg, c);
1183                                 putchar(',');
1184                                 if (!sysdecode_quotactl_cmd(stdout, *ip)) {
1185                                         if (decimal)
1186                                                 printf("<invalid=%d>", (int)*ip);
1187                                         else
1188                                                 printf("<invalid=%#x>",
1189                                                     (int)*ip);
1190                                 }
1191                                 ip++;
1192                                 narg--;
1193                                 c = ',';
1194                                 break;
1195                         case SYS_nfssvc:
1196                                 putchar('(');
1197                                 print_integer_arg(sysdecode_nfssvc_flags, *ip);
1198                                 ip++;
1199                                 narg--;
1200                                 c = ',';
1201                                 break;
1202                         case SYS_rtprio:
1203                         case SYS_rtprio_thread:
1204                                 putchar('(');
1205                                 print_integer_arg(sysdecode_rtprio_function,
1206                                     *ip);
1207                                 ip++;
1208                                 narg--;
1209                                 c = ',';
1210                                 break;
1211                         case SYS___semctl:
1212                                 print_number(ip, narg, c);
1213                                 print_number(ip, narg, c);
1214                                 putchar(',');
1215                                 print_integer_arg(sysdecode_semctl_cmd, *ip);
1216                                 ip++;
1217                                 narg--;
1218                                 break;
1219                         case SYS_semget:
1220                                 print_number(ip, narg, c);
1221                                 print_number(ip, narg, c);
1222                                 putchar(',');
1223                                 print_mask_arg(sysdecode_semget_flags, *ip);
1224                                 ip++;
1225                                 narg--;
1226                                 break;
1227                         case SYS_msgctl:
1228                                 print_number(ip, narg, c);
1229                                 putchar(',');
1230                                 print_integer_arg(sysdecode_msgctl_cmd, *ip);
1231                                 ip++;
1232                                 narg--;
1233                                 break;
1234                         case SYS_shmat:
1235                                 print_number(ip, narg, c);
1236                                 print_number(ip, narg, c);
1237                                 putchar(',');
1238                                 print_mask_arg(sysdecode_shmat_flags, *ip);
1239                                 ip++;
1240                                 narg--;
1241                                 break;
1242                         case SYS_shmctl:
1243                                 print_number(ip, narg, c);
1244                                 putchar(',');
1245                                 print_integer_arg(sysdecode_shmctl_cmd, *ip);
1246                                 ip++;
1247                                 narg--;
1248                                 break;
1249 #ifdef SYS_freebsd12_shm_open
1250                         case SYS_freebsd12_shm_open:
1251                                 print_number(ip, narg, c);
1252                                 putchar(',');
1253                                 print_mask_arg(sysdecode_open_flags, ip[0]);
1254                                 putchar(',');
1255                                 decode_filemode(ip[1]);
1256                                 ip += 2;
1257                                 narg -= 2;
1258                                 break;
1259 #endif
1260                         case SYS_minherit:
1261                                 print_number(ip, narg, c);
1262                                 print_number(ip, narg, c);
1263                                 putchar(',');
1264                                 print_integer_arg(sysdecode_minherit_inherit,
1265                                     *ip);
1266                                 ip++;
1267                                 narg--;
1268                                 break;
1269                         case SYS_rfork:
1270                                 putchar('(');
1271                                 print_mask_arg(sysdecode_rfork_flags, *ip);
1272                                 ip++;
1273                                 narg--;
1274                                 c = ',';
1275                                 break;
1276                         case SYS_lio_listio:
1277                                 putchar('(');
1278                                 print_integer_arg(sysdecode_lio_listio_mode,
1279                                     *ip);
1280                                 ip++;
1281                                 narg--;
1282                                 c = ',';
1283                                 break;
1284                         case SYS_mlockall:
1285                                 putchar('(');
1286                                 print_mask_arg(sysdecode_mlockall_flags, *ip);
1287                                 ip++;
1288                                 narg--;
1289                                 break;
1290                         case SYS_sched_setscheduler:
1291                                 print_number(ip, narg, c);
1292                                 putchar(',');
1293                                 print_integer_arg(sysdecode_scheduler_policy,
1294                                     *ip);
1295                                 ip++;
1296                                 narg--;
1297                                 break;
1298                         case SYS_sched_get_priority_max:
1299                         case SYS_sched_get_priority_min:
1300                                 putchar('(');
1301                                 print_integer_arg(sysdecode_scheduler_policy,
1302                                     *ip);
1303                                 ip++;
1304                                 narg--;
1305                                 break;
1306                         case SYS_sendfile:
1307                                 print_number(ip, narg, c);
1308                                 print_number(ip, narg, c);
1309                                 print_number(ip, narg, c);
1310                                 print_number(ip, narg, c);
1311                                 print_number(ip, narg, c);
1312                                 print_number(ip, narg, c);
1313                                 putchar(',');
1314                                 print_mask_arg(sysdecode_sendfile_flags, *ip);
1315                                 ip++;
1316                                 narg--;
1317                                 break;
1318                         case SYS_kldsym:
1319                                 print_number(ip, narg, c);
1320                                 putchar(',');
1321                                 print_integer_arg(sysdecode_kldsym_cmd, *ip);
1322                                 ip++;
1323                                 narg--;
1324                                 break;
1325                         case SYS_sigprocmask:
1326                                 putchar('(');
1327                                 print_integer_arg(sysdecode_sigprocmask_how,
1328                                     *ip);
1329                                 ip++;
1330                                 narg--;
1331                                 c = ',';
1332                                 break;
1333                         case SYS___acl_get_file:
1334                         case SYS___acl_set_file:
1335                         case SYS___acl_get_fd:
1336                         case SYS___acl_set_fd:
1337                         case SYS___acl_delete_file:
1338                         case SYS___acl_delete_fd:
1339                         case SYS___acl_aclcheck_file:
1340                         case SYS___acl_aclcheck_fd:
1341                         case SYS___acl_get_link:
1342                         case SYS___acl_set_link:
1343                         case SYS___acl_delete_link:
1344                         case SYS___acl_aclcheck_link:
1345                                 print_number(ip, narg, c);
1346                                 putchar(',');
1347                                 print_integer_arg(sysdecode_acltype, *ip);
1348                                 ip++;
1349                                 narg--;
1350                                 break;
1351                         case SYS_sigaction:
1352                                 putchar('(');
1353                                 print_signal(*ip);
1354                                 ip++;
1355                                 narg--;
1356                                 c = ',';
1357                                 break;
1358                         case SYS_extattrctl:
1359                                 print_number(ip, narg, c);
1360                                 putchar(',');
1361                                 print_integer_arg(sysdecode_extattrnamespace,
1362                                     *ip);
1363                                 ip++;
1364                                 narg--;
1365                                 break;
1366                         case SYS_nmount:
1367                                 print_number(ip, narg, c);
1368                                 print_number(ip, narg, c);
1369                                 putchar(',');
1370                                 print_mask_arg(sysdecode_mount_flags, *ip);
1371                                 ip++;
1372                                 narg--;
1373                                 break;
1374                         case SYS_thr_create:
1375                                 print_number(ip, narg, c);
1376                                 print_number(ip, narg, c);
1377                                 putchar(',');
1378                                 print_mask_arg(sysdecode_thr_create_flags, *ip);
1379                                 ip++;
1380                                 narg--;
1381                                 break;
1382                         case SYS_thr_kill:
1383                                 print_number(ip, narg, c);
1384                                 putchar(',');
1385                                 print_signal(*ip);
1386                                 ip++;
1387                                 narg--;
1388                                 break;
1389                         case SYS_kldunloadf:
1390                                 print_number(ip, narg, c);
1391                                 putchar(',');
1392                                 print_integer_arg(sysdecode_kldunload_flags,
1393                                     *ip);
1394                                 ip++;
1395                                 narg--;
1396                                 break;
1397                         case SYS_linkat:
1398                         case SYS_renameat:
1399                         case SYS_symlinkat:
1400                                 print_number(ip, narg, c);
1401                                 putchar(',');
1402                                 print_integer_arg_valid(sysdecode_atfd, *ip);
1403                                 ip++;
1404                                 narg--;
1405                                 print_number(ip, narg, c);
1406                                 break;
1407                         case SYS_cap_fcntls_limit:
1408                                 print_number(ip, narg, c);
1409                                 putchar(',');
1410                                 arg = *ip;
1411                                 ip++;
1412                                 narg--;
1413                                 print_mask_arg32(sysdecode_cap_fcntlrights, arg);
1414                                 break;
1415                         case SYS_posix_fadvise:
1416                                 print_number(ip, narg, c);
1417                                 print_number(ip, narg, c);
1418                                 print_number(ip, narg, c);
1419                                 (void)putchar(',');
1420                                 print_integer_arg(sysdecode_fadvice, *ip);
1421                                 ip++;
1422                                 narg--;
1423                                 break;
1424                         case SYS_procctl:
1425                                 putchar('(');
1426                                 print_integer_arg(sysdecode_idtype, *ip);
1427                                 c = ',';
1428                                 ip++;
1429                                 narg--;
1430                                 print_number64(first, ip, narg, c);
1431                                 putchar(',');
1432                                 print_integer_arg(sysdecode_procctl_cmd, *ip);
1433                                 ip++;
1434                                 narg--;
1435                                 break;
1436                         case SYS__umtx_op:
1437                                 print_number(ip, narg, c);
1438                                 putchar(',');
1439                                 print_integer_arg(sysdecode_umtx_op, *ip);
1440                                 switch (*ip) {
1441                                 case UMTX_OP_CV_WAIT:
1442                                         ip++;
1443                                         narg--;
1444                                         putchar(',');
1445                                         print_mask_argul(
1446                                             sysdecode_umtx_cvwait_flags, *ip);
1447                                         break;
1448                                 case UMTX_OP_RW_RDLOCK:
1449                                         ip++;
1450                                         narg--;
1451                                         putchar(',');
1452                                         print_mask_argul(
1453                                             sysdecode_umtx_rwlock_flags, *ip);
1454                                         break;
1455                                 }
1456                                 ip++;
1457                                 narg--;
1458                                 break;
1459                         case SYS_ftruncate:
1460                         case SYS_truncate:
1461                                 print_number(ip, narg, c);
1462                                 print_number64(first, ip, narg, c);
1463                                 break;
1464                         case SYS_fchownat:
1465                                 print_number(ip, narg, c);
1466                                 print_number(ip, narg, c);
1467                                 print_number(ip, narg, c);
1468                                 break;
1469                         case SYS_fstatat:
1470                         case SYS_utimensat:
1471                                 print_number(ip, narg, c);
1472                                 print_number(ip, narg, c);
1473                                 break;
1474                         case SYS_unlinkat:
1475                                 print_number(ip, narg, c);
1476                                 break;
1477                         case SYS_sysarch:
1478                                 putchar('(');
1479                                 print_integer_arg(sysdecode_sysarch_number, *ip);
1480                                 ip++;
1481                                 narg--;
1482                                 c = ',';
1483                                 break;
1484                         }
1485                         switch (ktr->ktr_code) {
1486                         case SYS_chflagsat:
1487                         case SYS_fchownat:
1488                         case SYS_faccessat:
1489                         case SYS_fchmodat:
1490                         case SYS_fstatat:
1491                         case SYS_linkat:
1492                         case SYS_unlinkat:
1493                         case SYS_utimensat:
1494                                 putchar(',');
1495                                 print_mask_arg0(sysdecode_atflags, *ip);
1496                                 ip++;
1497                                 narg--;
1498                                 break;
1499                         }
1500                 }
1501                 while (narg > 0) {
1502                         print_number(ip, narg, c);
1503                 }
1504                 putchar(')');
1505         }
1506         putchar('\n');
1507 }
1508
1509 void
1510 ktrsysret(struct ktr_sysret *ktr, u_int sv_flags)
1511 {
1512         register_t ret = ktr->ktr_retval;
1513         int error = ktr->ktr_error;
1514
1515         syscallname(ktr->ktr_code, sv_flags);
1516         printf(" ");
1517
1518         if (error == 0) {
1519                 if (fancy) {
1520                         printf("%ld", (long)ret);
1521                         if (ret < 0 || ret > 9)
1522                                 printf("/%#lx", (unsigned long)ret);
1523                 } else {
1524                         if (decimal)
1525                                 printf("%ld", (long)ret);
1526                         else
1527                                 printf("%#lx", (unsigned long)ret);
1528                 }
1529         } else if (error == ERESTART)
1530                 printf("RESTART");
1531         else if (error == EJUSTRETURN)
1532                 printf("JUSTRETURN");
1533         else {
1534                 printf("-1 errno %d", sysdecode_freebsd_to_abi_errno(
1535                     syscallabi(sv_flags), error));
1536                 if (fancy)
1537                         printf(" %s", strerror(ktr->ktr_error));
1538         }
1539         putchar('\n');
1540 }
1541
1542 void
1543 ktrnamei(char *cp, int len)
1544 {
1545         printf("\"%.*s\"\n", len, cp);
1546 }
1547
1548 void
1549 hexdump(char *p, int len, int screenwidth)
1550 {
1551         int n, i;
1552         int width;
1553
1554         width = 0;
1555         do {
1556                 width += 2;
1557                 i = 13;                 /* base offset */
1558                 i += (width / 2) + 1;   /* spaces every second byte */
1559                 i += (width * 2);       /* width of bytes */
1560                 i += 3;                 /* "  |" */
1561                 i += width;             /* each byte */
1562                 i += 1;                 /* "|" */
1563         } while (i < screenwidth);
1564         width -= 2;
1565
1566         for (n = 0; n < len; n += width) {
1567                 for (i = n; i < n + width; i++) {
1568                         if ((i % width) == 0) { /* beginning of line */
1569                                 printf("       0x%04x", i);
1570                         }
1571                         if ((i % 2) == 0) {
1572                                 printf(" ");
1573                         }
1574                         if (i < len)
1575                                 printf("%02x", p[i] & 0xff);
1576                         else
1577                                 printf("  ");
1578                 }
1579                 printf("  |");
1580                 for (i = n; i < n + width; i++) {
1581                         if (i >= len)
1582                                 break;
1583                         if (p[i] >= ' ' && p[i] <= '~')
1584                                 printf("%c", p[i]);
1585                         else
1586                                 printf(".");
1587                 }
1588                 printf("|\n");
1589         }
1590         if ((i % width) != 0)
1591                 printf("\n");
1592 }
1593
1594 void
1595 visdump(char *dp, int datalen, int screenwidth)
1596 {
1597         int col = 0;
1598         char *cp;
1599         int width;
1600         char visbuf[5];
1601
1602         printf("       \"");
1603         col = 8;
1604         for (;datalen > 0; datalen--, dp++) {
1605                  vis(visbuf, *dp, VIS_CSTYLE, *(dp+1));
1606                 cp = visbuf;
1607                 /*
1608                  * Keep track of printables and
1609                  * space chars (like fold(1)).
1610                  */
1611                 if (col == 0) {
1612                         putchar('\t');
1613                         col = 8;
1614                 }
1615                 switch(*cp) {
1616                 case '\n':
1617                         col = 0;
1618                         putchar('\n');
1619                         continue;
1620                 case '\t':
1621                         width = 8 - (col&07);
1622                         break;
1623                 default:
1624                         width = strlen(cp);
1625                 }
1626                 if (col + width > (screenwidth-2)) {
1627                         printf("\\\n\t");
1628                         col = 8;
1629                 }
1630                 col += width;
1631                 do {
1632                         putchar(*cp++);
1633                 } while (*cp);
1634         }
1635         if (col == 0)
1636                 printf("       ");
1637         printf("\"\n");
1638 }
1639
1640 void
1641 ktrgenio(struct ktr_genio *ktr, int len)
1642 {
1643         int datalen = len - sizeof (struct ktr_genio);
1644         char *dp = (char *)ktr + sizeof (struct ktr_genio);
1645         static int screenwidth = 0;
1646         int i, binary;
1647
1648         printf("fd %d %s %d byte%s\n", ktr->ktr_fd,
1649                 ktr->ktr_rw == UIO_READ ? "read" : "wrote", datalen,
1650                 datalen == 1 ? "" : "s");
1651         if (suppressdata)
1652                 return;
1653         if (screenwidth == 0) {
1654                 struct winsize ws;
1655
1656                 if (fancy && ioctl(fileno(stderr), TIOCGWINSZ, &ws) != -1 &&
1657                     ws.ws_col > 8)
1658                         screenwidth = ws.ws_col;
1659                 else
1660                         screenwidth = 80;
1661         }
1662         if (maxdata && datalen > maxdata)
1663                 datalen = maxdata;
1664
1665         for (i = 0, binary = 0; i < datalen && binary == 0; i++)  {
1666                 if (dp[i] >= 32 && dp[i] < 127)
1667                         continue;
1668                 if (dp[i] == 10 || dp[i] == 13 || dp[i] == 0 || dp[i] == 9)
1669                         continue;
1670                 binary = 1;
1671         }
1672         if (binary)
1673                 hexdump(dp, datalen, screenwidth);
1674         else
1675                 visdump(dp, datalen, screenwidth);
1676 }
1677
1678 void
1679 ktrpsig(struct ktr_psig *psig)
1680 {
1681         const char *str;
1682
1683         print_signal(psig->signo);
1684         if (psig->action == SIG_DFL) {
1685                 printf(" SIG_DFL");
1686         } else {
1687                 printf(" caught handler=0x%lx mask=0x%x",
1688                     (u_long)psig->action, psig->mask.__bits[0]);
1689         }
1690         printf(" code=");
1691         str = sysdecode_sigcode(psig->signo, psig->code);
1692         if (str != NULL)
1693                 printf("%s", str);
1694         else
1695                 printf("<invalid=%#x>", psig->code);
1696         putchar('\n');
1697 }
1698
1699 void
1700 ktrcsw_old(struct ktr_csw_old *cs)
1701 {
1702         printf("%s %s\n", cs->out ? "stop" : "resume",
1703                 cs->user ? "user" : "kernel");
1704 }
1705
1706 void
1707 ktrcsw(struct ktr_csw *cs)
1708 {
1709         printf("%s %s \"%s\"\n", cs->out ? "stop" : "resume",
1710             cs->user ? "user" : "kernel", cs->wmesg);
1711 }
1712
1713 void
1714 ktruser(int len, void *p)
1715 {
1716         unsigned char *cp;
1717
1718         if (sysdecode_utrace(stdout, p, len)) {
1719                 printf("\n");
1720                 return;
1721         }
1722
1723         printf("%d ", len);
1724         cp = p;
1725         while (len--)
1726                 if (decimal)
1727                         printf(" %d", *cp++);
1728                 else
1729                         printf(" %02x", *cp++);
1730         printf("\n");
1731 }
1732
1733 void
1734 ktrcaprights(cap_rights_t *rightsp)
1735 {
1736
1737         printf("cap_rights_t ");
1738         sysdecode_cap_rights(stdout, rightsp);
1739         printf("\n");
1740 }
1741
1742 static void
1743 ktrtimeval(struct timeval *tv)
1744 {
1745
1746         printf("{%ld, %ld}", (long)tv->tv_sec, tv->tv_usec);
1747 }
1748
1749 void
1750 ktritimerval(struct itimerval *it)
1751 {
1752
1753         printf("itimerval { .interval = ");
1754         ktrtimeval(&it->it_interval);
1755         printf(", .value = ");
1756         ktrtimeval(&it->it_value);
1757         printf(" }\n");
1758 }
1759
1760 void
1761 ktrsockaddr(struct sockaddr *sa)
1762 {
1763 /*
1764  TODO: Support additional address families
1765         #include <netsmb/netbios.h>
1766         struct sockaddr_nb      *nb;
1767 */
1768         const char *str;
1769         char addr[64];
1770
1771         /*
1772          * note: ktrstruct() has already verified that sa points to a
1773          * buffer at least sizeof(struct sockaddr) bytes long and exactly
1774          * sa->sa_len bytes long.
1775          */
1776         printf("struct sockaddr { ");
1777         str = sysdecode_sockaddr_family(sa->sa_family);
1778         if (str != NULL)
1779                 printf("%s", str);
1780         else
1781                 printf("<invalid=%d>", sa->sa_family);
1782         printf(", ");
1783
1784 #define check_sockaddr_len(n)                                   \
1785         if (sa_##n.s##n##_len < sizeof(struct sockaddr_##n)) {  \
1786                 printf("invalid");                              \
1787                 break;                                          \
1788         }
1789
1790         switch(sa->sa_family) {
1791         case AF_INET: {
1792                 struct sockaddr_in sa_in;
1793
1794                 memset(&sa_in, 0, sizeof(sa_in));
1795                 memcpy(&sa_in, sa, sa->sa_len);
1796                 check_sockaddr_len(in);
1797                 inet_ntop(AF_INET, &sa_in.sin_addr, addr, sizeof addr);
1798                 printf("%s:%u", addr, ntohs(sa_in.sin_port));
1799                 break;
1800         }
1801         case AF_INET6: {
1802                 struct sockaddr_in6 sa_in6;
1803
1804                 memset(&sa_in6, 0, sizeof(sa_in6));
1805                 memcpy(&sa_in6, sa, sa->sa_len);
1806                 check_sockaddr_len(in6);
1807                 getnameinfo((struct sockaddr *)&sa_in6, sizeof(sa_in6),
1808                     addr, sizeof(addr), NULL, 0, NI_NUMERICHOST);
1809                 printf("[%s]:%u", addr, htons(sa_in6.sin6_port));
1810                 break;
1811         }
1812         case AF_UNIX: {
1813                 struct sockaddr_un sa_un;
1814
1815                 memset(&sa_un, 0, sizeof(sa_un));
1816                 memcpy(&sa_un, sa, sa->sa_len);
1817                 printf("%.*s", (int)sizeof(sa_un.sun_path), sa_un.sun_path);
1818                 break;
1819         }
1820         default:
1821                 printf("unknown address family");
1822         }
1823         printf(" }\n");
1824 }
1825
1826 void
1827 ktrstat(struct stat *statp)
1828 {
1829         char mode[12], timestr[PATH_MAX + 4];
1830         struct passwd *pwd;
1831         struct group  *grp;
1832         struct tm *tm;
1833
1834         /*
1835          * note: ktrstruct() has already verified that statp points to a
1836          * buffer exactly sizeof(struct stat) bytes long.
1837          */
1838         printf("struct stat {");
1839         printf("dev=%ju, ino=%ju, ",
1840                 (uintmax_t)statp->st_dev, (uintmax_t)statp->st_ino);
1841         if (!resolv)
1842                 printf("mode=0%jo, ", (uintmax_t)statp->st_mode);
1843         else {
1844                 strmode(statp->st_mode, mode);
1845                 printf("mode=%s, ", mode);
1846         }
1847         printf("nlink=%ju, ", (uintmax_t)statp->st_nlink);
1848         if (!resolv) {
1849                 pwd = NULL;
1850         } else {
1851 #ifdef WITH_CASPER
1852                 if (cappwd != NULL)
1853                         pwd = cap_getpwuid(cappwd, statp->st_uid);
1854                 else
1855 #endif
1856                         pwd = getpwuid(statp->st_uid);
1857         }
1858         if (pwd == NULL)
1859                 printf("uid=%ju, ", (uintmax_t)statp->st_uid);
1860         else
1861                 printf("uid=\"%s\", ", pwd->pw_name);
1862         if (!resolv) {
1863                 grp = NULL;
1864         } else {
1865 #ifdef WITH_CASPER
1866                 if (capgrp != NULL)
1867                         grp = cap_getgrgid(capgrp, statp->st_gid);
1868                 else
1869 #endif
1870                         grp = getgrgid(statp->st_gid);
1871         }
1872         if (grp == NULL)
1873                 printf("gid=%ju, ", (uintmax_t)statp->st_gid);
1874         else
1875                 printf("gid=\"%s\", ", grp->gr_name);
1876         printf("rdev=%ju, ", (uintmax_t)statp->st_rdev);
1877         printf("atime=");
1878         if (!resolv)
1879                 printf("%jd", (intmax_t)statp->st_atim.tv_sec);
1880         else {
1881                 tm = localtime(&statp->st_atim.tv_sec);
1882                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1883                 printf("\"%s\"", timestr);
1884         }
1885         if (statp->st_atim.tv_nsec != 0)
1886                 printf(".%09ld, ", statp->st_atim.tv_nsec);
1887         else
1888                 printf(", ");
1889         printf("mtime=");
1890         if (!resolv)
1891                 printf("%jd", (intmax_t)statp->st_mtim.tv_sec);
1892         else {
1893                 tm = localtime(&statp->st_mtim.tv_sec);
1894                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1895                 printf("\"%s\"", timestr);
1896         }
1897         if (statp->st_mtim.tv_nsec != 0)
1898                 printf(".%09ld, ", statp->st_mtim.tv_nsec);
1899         else
1900                 printf(", ");
1901         printf("ctime=");
1902         if (!resolv)
1903                 printf("%jd", (intmax_t)statp->st_ctim.tv_sec);
1904         else {
1905                 tm = localtime(&statp->st_ctim.tv_sec);
1906                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1907                 printf("\"%s\"", timestr);
1908         }
1909         if (statp->st_ctim.tv_nsec != 0)
1910                 printf(".%09ld, ", statp->st_ctim.tv_nsec);
1911         else
1912                 printf(", ");
1913         printf("birthtime=");
1914         if (!resolv)
1915                 printf("%jd", (intmax_t)statp->st_birthtim.tv_sec);
1916         else {
1917                 tm = localtime(&statp->st_birthtim.tv_sec);
1918                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1919                 printf("\"%s\"", timestr);
1920         }
1921         if (statp->st_birthtim.tv_nsec != 0)
1922                 printf(".%09ld, ", statp->st_birthtim.tv_nsec);
1923         else
1924                 printf(", ");
1925         printf("size=%jd, blksize=%ju, blocks=%jd, flags=0x%x",
1926                 (uintmax_t)statp->st_size, (uintmax_t)statp->st_blksize,
1927                 (intmax_t)statp->st_blocks, statp->st_flags);
1928         printf(" }\n");
1929 }
1930
1931 void
1932 ktrstruct(char *buf, size_t buflen)
1933 {
1934         char *name, *data;
1935         size_t namelen, datalen;
1936         int i;
1937         cap_rights_t rights;
1938         struct itimerval it;
1939         struct stat sb;
1940         struct sockaddr_storage ss;
1941
1942         for (name = buf, namelen = 0;
1943              namelen < buflen && name[namelen] != '\0';
1944              ++namelen)
1945                 /* nothing */;
1946         if (namelen == buflen)
1947                 goto invalid;
1948         if (name[namelen] != '\0')
1949                 goto invalid;
1950         data = buf + namelen + 1;
1951         datalen = buflen - namelen - 1;
1952         if (datalen == 0)
1953                 goto invalid;
1954         /* sanity check */
1955         for (i = 0; i < (int)namelen; ++i)
1956                 if (!isalpha(name[i]))
1957                         goto invalid;
1958         if (strcmp(name, "caprights") == 0) {
1959                 if (datalen != sizeof(cap_rights_t))
1960                         goto invalid;
1961                 memcpy(&rights, data, datalen);
1962                 ktrcaprights(&rights);
1963         } else if (strcmp(name, "itimerval") == 0) {
1964                 if (datalen != sizeof(struct itimerval))
1965                         goto invalid;
1966                 memcpy(&it, data, datalen);
1967                 ktritimerval(&it);
1968         } else if (strcmp(name, "stat") == 0) {
1969                 if (datalen != sizeof(struct stat))
1970                         goto invalid;
1971                 memcpy(&sb, data, datalen);
1972                 ktrstat(&sb);
1973         } else if (strcmp(name, "sockaddr") == 0) {
1974                 if (datalen > sizeof(ss))
1975                         goto invalid;
1976                 memcpy(&ss, data, datalen);
1977                 if (datalen != ss.ss_len)
1978                         goto invalid;
1979                 ktrsockaddr((struct sockaddr *)&ss);
1980         } else {
1981                 printf("unknown structure\n");
1982         }
1983         return;
1984 invalid:
1985         printf("invalid record\n");
1986 }
1987
1988 void
1989 ktrcapfail(struct ktr_cap_fail *ktr)
1990 {
1991         switch (ktr->cap_type) {
1992         case CAPFAIL_NOTCAPABLE:
1993                 /* operation on fd with insufficient capabilities */
1994                 printf("operation requires ");
1995                 sysdecode_cap_rights(stdout, &ktr->cap_needed);
1996                 printf(", descriptor holds ");
1997                 sysdecode_cap_rights(stdout, &ktr->cap_held);
1998                 break;
1999         case CAPFAIL_INCREASE:
2000                 /* requested more capabilities than fd already has */
2001                 printf("attempt to increase capabilities from ");
2002                 sysdecode_cap_rights(stdout, &ktr->cap_held);
2003                 printf(" to ");
2004                 sysdecode_cap_rights(stdout, &ktr->cap_needed);
2005                 break;
2006         case CAPFAIL_SYSCALL:
2007                 /* called restricted syscall */
2008                 printf("disallowed system call");
2009                 break;
2010         case CAPFAIL_LOOKUP:
2011                 /* absolute or AT_FDCWD path, ".." path, etc. */
2012                 printf("restricted VFS lookup");
2013                 break;
2014         default:
2015                 printf("unknown capability failure: ");
2016                 sysdecode_cap_rights(stdout, &ktr->cap_needed);
2017                 printf(" ");
2018                 sysdecode_cap_rights(stdout, &ktr->cap_held);
2019                 break;
2020         }
2021         printf("\n");
2022 }
2023
2024 void
2025 ktrfault(struct ktr_fault *ktr)
2026 {
2027
2028         printf("0x%jx ", (uintmax_t)ktr->vaddr);
2029         print_mask_arg(sysdecode_vmprot, ktr->type);
2030         printf("\n");
2031 }
2032
2033 void
2034 ktrfaultend(struct ktr_faultend *ktr)
2035 {
2036         const char *str;
2037
2038         str = sysdecode_vmresult(ktr->result);
2039         if (str != NULL)
2040                 printf("%s", str);
2041         else
2042                 printf("<invalid=%d>", ktr->result);
2043         printf("\n");
2044 }
2045
2046 void
2047 ktrkevent(struct kevent *kev)
2048 {
2049
2050         printf("{ ident=");
2051         switch (kev->filter) {
2052         case EVFILT_READ:
2053         case EVFILT_WRITE:
2054         case EVFILT_VNODE:
2055         case EVFILT_PROC:
2056         case EVFILT_TIMER:
2057         case EVFILT_PROCDESC:
2058         case EVFILT_EMPTY:
2059                 printf("%ju", (uintmax_t)kev->ident);
2060                 break;
2061         case EVFILT_SIGNAL:
2062                 print_signal(kev->ident);
2063                 break;
2064         default:
2065                 printf("%p", (void *)kev->ident);
2066         }
2067         printf(", filter=");
2068         print_integer_arg(sysdecode_kevent_filter, kev->filter);
2069         printf(", flags=");
2070         print_mask_arg0(sysdecode_kevent_flags, kev->flags);
2071         printf(", fflags=");
2072         sysdecode_kevent_fflags(stdout, kev->filter, kev->fflags,
2073             decimal ? 10 : 16);
2074         printf(", data=%#jx, udata=%p }", (uintmax_t)kev->data, kev->udata);
2075 }
2076
2077 void
2078 ktrstructarray(struct ktr_struct_array *ksa, size_t buflen)
2079 {
2080         struct kevent kev;
2081         char *name, *data;
2082         size_t namelen, datalen;
2083         int i;
2084         bool first;
2085
2086         buflen -= sizeof(*ksa);
2087         for (name = (char *)(ksa + 1), namelen = 0;
2088              namelen < buflen && name[namelen] != '\0';
2089              ++namelen)
2090                 /* nothing */;
2091         if (namelen == buflen)
2092                 goto invalid;
2093         if (name[namelen] != '\0')
2094                 goto invalid;
2095         /* sanity check */
2096         for (i = 0; i < (int)namelen; ++i)
2097                 if (!isalnum(name[i]) && name[i] != '_')
2098                         goto invalid;
2099         data = name + namelen + 1;
2100         datalen = buflen - namelen - 1;
2101         printf("struct %s[] = { ", name);
2102         first = true;
2103         for (; datalen >= ksa->struct_size;
2104             data += ksa->struct_size, datalen -= ksa->struct_size) {
2105                 if (!first)
2106                         printf("\n             ");
2107                 else
2108                         first = false;
2109                 if (strcmp(name, "kevent") == 0) {
2110                         if (ksa->struct_size != sizeof(kev))
2111                                 goto bad_size;
2112                         memcpy(&kev, data, sizeof(kev));
2113                         ktrkevent(&kev);
2114                 } else if (strcmp(name, "kevent_freebsd11") == 0) {
2115                         struct kevent_freebsd11 kev11;
2116
2117                         if (ksa->struct_size != sizeof(kev11))
2118                                 goto bad_size;
2119                         memcpy(&kev11, data, sizeof(kev11));
2120                         memset(&kev, 0, sizeof(kev));
2121                         kev.ident = kev11.ident;
2122                         kev.filter = kev11.filter;
2123                         kev.flags = kev11.flags;
2124                         kev.fflags = kev11.fflags;
2125                         kev.data = kev11.data;
2126                         kev.udata = kev11.udata;
2127                         ktrkevent(&kev);
2128 #ifdef _WANT_KEVENT32
2129                 } else if (strcmp(name, "kevent32") == 0) {
2130                         struct kevent32 kev32;
2131
2132                         if (ksa->struct_size != sizeof(kev32))
2133                                 goto bad_size;
2134                         memcpy(&kev32, data, sizeof(kev32));
2135                         memset(&kev, 0, sizeof(kev));
2136                         kev.ident = kev32.ident;
2137                         kev.filter = kev32.filter;
2138                         kev.flags = kev32.flags;
2139                         kev.fflags = kev32.fflags;
2140 #if BYTE_ORDER == BIG_ENDIAN
2141                         kev.data = kev32.data2 | ((int64_t)kev32.data1 << 32);
2142 #else
2143                         kev.data = kev32.data1 | ((int64_t)kev32.data2 << 32);
2144 #endif
2145                         kev.udata = (void *)(uintptr_t)kev32.udata;
2146                         ktrkevent(&kev);
2147                 } else if (strcmp(name, "kevent32_freebsd11") == 0) {
2148                         struct kevent32_freebsd11 kev32;
2149
2150                         if (ksa->struct_size != sizeof(kev32))
2151                                 goto bad_size;
2152                         memcpy(&kev32, data, sizeof(kev32));
2153                         memset(&kev, 0, sizeof(kev));
2154                         kev.ident = kev32.ident;
2155                         kev.filter = kev32.filter;
2156                         kev.flags = kev32.flags;
2157                         kev.fflags = kev32.fflags;
2158                         kev.data = kev32.data;
2159                         kev.udata = (void *)(uintptr_t)kev32.udata;
2160                         ktrkevent(&kev);
2161 #endif
2162                 } else {
2163                         printf("<unknown structure> }\n");
2164                         return;
2165                 }
2166         }
2167         printf(" }\n");
2168         return;
2169 invalid:
2170         printf("invalid record\n");
2171         return;
2172 bad_size:
2173         printf("<bad size> }\n");
2174         return;
2175 }
2176
2177 void
2178 usage(void)
2179 {
2180         fprintf(stderr, "usage: kdump [-dEnlHRrSsTA] [-f trfile] "
2181             "[-m maxdata] [-p pid] [-t trstr]\n");
2182         exit(1);
2183 }