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/mman.h>
  59 #include <sys/ioctl.h>
  60 #include <sys/socket.h>
  61 #include <sys/stat.h>
  62 #include <sys/sysent.h>
  63 #include <sys/umtx.h>
  64 #include <sys/un.h>
  65 #include <sys/queue.h>
  66 #include <sys/wait.h>
  67 #ifdef WITH_CASPER
  68 #include <sys/nv.h>
  69 #endif
  70 #include <arpa/inet.h>
  71 #include <netinet/in.h>
  72 #include <ctype.h>
  73 #include <capsicum_helpers.h>
  74 #include <err.h>
  75 #include <grp.h>
  76 #include <inttypes.h>
  77 #include <locale.h>
  78 #include <netdb.h>
  79 #include <nl_types.h>
  80 #include <pwd.h>
  81 #include <stddef.h>
  82 #include <stdio.h>
  83 #include <stdlib.h>
  84 #include <string.h>
  85 #include <sysdecode.h>
  86 #include <time.h>
  87 #include <unistd.h>
  88 #include <vis.h>
  89 #include "ktrace.h"
  90
  91 #ifdef WITH_CASPER
  92 #include <libcasper.h>
  93
  94 #include <casper/cap_grp.h>
  95 #include <casper/cap_pwd.h>
  96 #endif
  97
  98 int fetchprocinfo(struct ktr_header *, u_int *);
  99 u_int findabi(struct ktr_header *);
 100 int fread_tail(void *, int, int);
 101 void dumpheader(struct ktr_header *, u_int);
 102 void ktrsyscall(struct ktr_syscall *, u_int);
 103 void ktrsysret(struct ktr_sysret *, u_int);
 104 void ktrnamei(char *, int);
 105 void hexdump(char *, int, int);
 106 void visdump(char *, int, int);
 107 void ktrgenio(struct ktr_genio *, int);
 108 void ktrpsig(struct ktr_psig *);
 109 void ktrcsw(struct ktr_csw *);
 110 void ktrcsw_old(struct ktr_csw_old *);
 111 void ktruser(int, void *);
 112 void ktrcaprights(cap_rights_t *);
 113 void ktritimerval(struct itimerval *it);
 114 void ktrsockaddr(struct sockaddr *);
 115 void ktrstat(struct stat *);
 116 void ktrstruct(char *, size_t);
 117 void ktrcapfail(struct ktr_cap_fail *);
 118 void ktrfault(struct ktr_fault *);
 119 void ktrfaultend(struct ktr_faultend *);
 120 void ktrkevent(struct kevent *);
 121 void ktrstructarray(struct ktr_struct_array *, size_t);
 122 void usage(void);
 123
 124 #define TIMESTAMP_NONE          0x0
 125 #define TIMESTAMP_ABSOLUTE      0x1
 126 #define TIMESTAMP_ELAPSED       0x2
 127 #define TIMESTAMP_RELATIVE      0x4
 128
 129 static bool abiflag, decimal, fancy = true, resolv, suppressdata, syscallno,
 130     tail, threads;
 131 static int timestamp, maxdata;
 132 static const char *tracefile = DEF_TRACEFILE;
 133 static struct ktr_header ktr_header;
 134
 135 #define TIME_FORMAT     "%b %e %T %Y"
 136 #define eqs(s1, s2)     (strcmp((s1), (s2)) == 0)
 137
 138 #define print_number64(first,i,n,c) do {                                \
 139         uint64_t __v;                                                   \
 140                                                                         \
 141         if (quad_align && (((ptrdiff_t)((i) - (first))) & 1) == 1) {    \
 142                 (i)++;                                                  \
 143                 (n)--;                                                  \
 144         }                                                               \
 145         if (quad_slots == 2)                                            \
 146                 __v = (uint64_t)(uint32_t)(i)[0] |                      \
 147                     ((uint64_t)(uint32_t)(i)[1]) << 32;                 \
 148         else                                                            \
 149                 __v = (uint64_t)*(i);                                   \
 150         if (decimal)                                                    \
 151                 printf("%c%jd", (c), (intmax_t)__v);                    \
 152         else                                                            \
 153                 printf("%c%#jx", (c), (uintmax_t)__v);                  \
 154         (i) += quad_slots;                                              \
 155         (n) -= quad_slots;                                              \
 156         (c) = ',';                                                      \
 157 } while (0)
 158
 159 #define print_number(i,n,c) do {                                        \
 160         if (decimal)                                                    \
 161                 printf("%c%jd", c, (intmax_t)*i);                       \
 162         else                                                            \
 163                 printf("%c%#jx", c, (uintmax_t)(u_register_t)*i);       \
 164         i++;                                                            \
 165         n--;                                                            \
 166         c = ',';                                                        \
 167 } while (0)
 168
 169 struct proc_info
 170 {
 171         TAILQ_ENTRY(proc_info)  info;
 172         u_int                   sv_flags;
 173         pid_t                   pid;
 174 };
 175
 176 static TAILQ_HEAD(trace_procs, proc_info) trace_procs;
 177
 178 #ifdef WITH_CASPER
 179 static cap_channel_t *cappwd, *capgrp;
 180
 181 static int
 182 cappwdgrp_setup(cap_channel_t **cappwdp, cap_channel_t **capgrpp)
 183 {
 184         cap_channel_t *capcas, *cappwdloc, *capgrploc;
 185         const char *cmds[1], *fields[1];
 186
 187         capcas = cap_init();
 188         if (capcas == NULL) {
 189                 err(1, "unable to create casper process");
 190                 exit(1);
 191         }
 192         cappwdloc = cap_service_open(capcas, "system.pwd");
 193         capgrploc = cap_service_open(capcas, "system.grp");
 194         /* Casper capability no longer needed. */
 195         cap_close(capcas);
 196         if (cappwdloc == NULL || capgrploc == NULL) {
 197                 if (cappwdloc == NULL)
 198                         warn("unable to open system.pwd service");
 199                 if (capgrploc == NULL)
 200                         warn("unable to open system.grp service");
 201                 exit(1);
 202         }
 203         /* Limit system.pwd to only getpwuid() function and pw_name field. */
 204         cmds[0] = "getpwuid";
 205         if (cap_pwd_limit_cmds(cappwdloc, cmds, 1) < 0)
 206                 err(1, "unable to limit system.pwd service");
 207         fields[0] = "pw_name";
 208         if (cap_pwd_limit_fields(cappwdloc, fields, 1) < 0)
 209                 err(1, "unable to limit system.pwd service");
 210         /* Limit system.grp to only getgrgid() function and gr_name field. */
 211         cmds[0] = "getgrgid";
 212         if (cap_grp_limit_cmds(capgrploc, cmds, 1) < 0)
 213                 err(1, "unable to limit system.grp service");
 214         fields[0] = "gr_name";
 215         if (cap_grp_limit_fields(capgrploc, fields, 1) < 0)
 216                 err(1, "unable to limit system.grp service");
 217
 218         *cappwdp = cappwdloc;
 219         *capgrpp = capgrploc;
 220         return (0);
 221 }
 222 #endif  /* WITH_CASPER */
 223
 224 static void
 225 print_integer_arg(const char *(*decoder)(int), int value)
 226 {
 227         const char *str;
 228
 229         str = decoder(value);
 230         if (str != NULL)
 231                 printf("%s", str);
 232         else {
 233                 if (decimal)
 234                         printf("<invalid=%d>", value);
 235                 else
 236                         printf("<invalid=%#x>", value);
 237         }
 238 }
 239
 240 /* Like print_integer_arg but unknown values are treated as valid. */
 241 static void
 242 print_integer_arg_valid(const char *(*decoder)(int), int value)
 243 {
 244         const char *str;
 245
 246         str = decoder(value);
 247         if (str != NULL)
 248                 printf("%s", str);
 249         else {
 250                 if (decimal)
 251                         printf("%d", value);
 252                 else
 253                         printf("%#x", value);
 254         }
 255 }
 256
 257 static bool
 258 print_mask_arg_part(bool (*decoder)(FILE *, int, int *), int value, int *rem)
 259 {
 260
 261         printf("%#x<", value);
 262         return (decoder(stdout, value, rem));
 263 }
 264
 265 static void
 266 print_mask_arg(bool (*decoder)(FILE *, int, int *), int value)
 267 {
 268         bool invalid;
 269         int rem;
 270
 271         invalid = !print_mask_arg_part(decoder, value, &rem);
 272         printf(">");
 273         if (invalid)
 274                 printf("<invalid>%u", rem);
 275 }
 276
 277 static void
 278 print_mask_arg0(bool (*decoder)(FILE *, int, int *), int value)
 279 {
 280         bool invalid;
 281         int rem;
 282
 283         if (value == 0) {
 284                 printf("0");
 285                 return;
 286         }
 287         printf("%#x<", value);
 288         invalid = !decoder(stdout, value, &rem);
 289         printf(">");
 290         if (invalid)
 291                 printf("<invalid>%u", rem);
 292 }
 293
 294 static void
 295 decode_fileflags(fflags_t value)
 296 {
 297         bool invalid;
 298         fflags_t rem;
 299
 300         if (value == 0) {
 301                 printf("0");
 302                 return;
 303         }
 304         printf("%#x<", value);
 305         invalid = !sysdecode_fileflags(stdout, value, &rem);
 306         printf(">");
 307         if (invalid)
 308                 printf("<invalid>%u", rem);
 309 }
 310
 311 static void
 312 decode_filemode(int value)
 313 {
 314         bool invalid;
 315         int rem;
 316
 317         if (value == 0) {
 318                 printf("0");
 319                 return;
 320         }
 321         printf("%#o<", value);
 322         invalid = !sysdecode_filemode(stdout, value, &rem);
 323         printf(">");
 324         if (invalid)
 325                 printf("<invalid>%u", rem);
 326 }
 327
 328 static void
 329 print_mask_arg32(bool (*decoder)(FILE *, uint32_t, uint32_t *), uint32_t value)
 330 {
 331         bool invalid;
 332         uint32_t rem;
 333
 334         printf("%#x<", value);
 335         invalid = !decoder(stdout, value, &rem);
 336         printf(">");
 337         if (invalid)
 338                 printf("<invalid>%u", rem);
 339 }
 340
 341 static void
 342 print_mask_argul(bool (*decoder)(FILE *, u_long, u_long *), u_long value)
 343 {
 344         bool invalid;
 345         u_long rem;
 346
 347         if (value == 0) {
 348                 printf("0");
 349                 return;
 350         }
 351         printf("%#lx<", value);
 352         invalid = !decoder(stdout, value, &rem);
 353         printf(">");
 354         if (invalid)
 355                 printf("<invalid>%lu", rem);
 356 }
 357
 358 int
 359 main(int argc, char *argv[])
 360 {
 361         int ch, ktrlen, size;
 362         void *m;
 363         int trpoints = ALL_POINTS;
 364         int drop_logged;
 365         pid_t pid = 0;
 366         u_int sv_flags;
 367
 368         setlocale(LC_CTYPE, "");
 369
 370         timestamp = TIMESTAMP_NONE;
 371
 372         while ((ch = getopt(argc,argv,"f:dElm:np:AHRrSsTt:")) != -1)
 373                 switch (ch) {
 374                 case 'A':
 375                         abiflag = true;
 376                         break;
 377                 case 'f':
 378                         tracefile = optarg;
 379                         break;
 380                 case 'd':
 381                         decimal = true;
 382                         break;
 383                 case 'l':
 384                         tail = true;
 385                         break;
 386                 case 'm':
 387                         maxdata = atoi(optarg);
 388                         break;
 389                 case 'n':
 390                         fancy = false;
 391                         break;
 392                 case 'p':
 393                         pid = atoi(optarg);
 394                         break;
 395                 case 'r':
 396                         resolv = true;
 397                         break;
 398                 case 'S':
 399                         syscallno = true;
 400                         break;
 401                 case 's':
 402                         suppressdata = true;
 403                         break;
 404                 case 'E':
 405                         timestamp |= TIMESTAMP_ELAPSED;
 406                         break;
 407                 case 'H':
 408                         threads = true;
 409                         break;
 410                 case 'R':
 411                         timestamp |= TIMESTAMP_RELATIVE;
 412                         break;
 413                 case 'T':
 414                         timestamp |= TIMESTAMP_ABSOLUTE;
 415                         break;
 416                 case 't':
 417                         trpoints = getpoints(optarg);
 418                         if (trpoints < 0)
 419                                 errx(1, "unknown trace point in %s", optarg);
 420                         break;
 421                 default:
 422                         usage();
 423                 }
 424
 425         if (argc > optind)
 426                 usage();
 427
 428         m = malloc(size = 1025);
 429         if (m == NULL)
 430                 errx(1, "%s", strerror(ENOMEM));
 431         if (strcmp(tracefile, "-") != 0)
 432                 if (!freopen(tracefile, "r", stdin))
 433                         err(1, "%s", tracefile);
 434
 435         caph_cache_catpages();
 436         caph_cache_tzdata();
 437
 438 #ifdef WITH_CASPER
 439         if (resolv) {
 440                 if (cappwdgrp_setup(&cappwd, &capgrp) < 0) {
 441                         cappwd = NULL;
 442                         capgrp = NULL;
 443                 }
 444         }
 445         if (!resolv || (cappwd != NULL && capgrp != NULL)) {
 446                 if (caph_enter() < 0)
 447                         err(1, "unable to enter capability mode");
 448         }
 449 #else
 450         if (!resolv) {
 451                 if (caph_enter() < 0)
 452                         err(1, "unable to enter capability mode");
 453         }
 454 #endif
 455         if (caph_limit_stdio() == -1)
 456                 err(1, "unable to limit stdio");
 457
 458         TAILQ_INIT(&trace_procs);
 459         drop_logged = 0;
 460         while (fread_tail(&ktr_header, sizeof(struct ktr_header), 1)) {
 461                 if (ktr_header.ktr_type & KTR_DROP) {
 462                         ktr_header.ktr_type &= ~KTR_DROP;
 463                         if (!drop_logged && threads) {
 464                                 printf(
 465                                     "%6jd %6jd %-8.*s Events dropped.\n",
 466                                     (intmax_t)ktr_header.ktr_pid,
 467                                     ktr_header.ktr_tid > 0 ?
 468                                     (intmax_t)ktr_header.ktr_tid : 0,
 469                                     MAXCOMLEN, ktr_header.ktr_comm);
 470                                 drop_logged = 1;
 471                         } else if (!drop_logged) {
 472                                 printf("%6jd %-8.*s Events dropped.\n",
 473                                     (intmax_t)ktr_header.ktr_pid, MAXCOMLEN,
 474                                     ktr_header.ktr_comm);
 475                                 drop_logged = 1;
 476                         }
 477                 }
 478                 if ((ktrlen = ktr_header.ktr_len) < 0)
 479                         errx(1, "bogus length 0x%x", ktrlen);
 480                 if (ktrlen > size) {
 481                         m = realloc(m, ktrlen+1);
 482                         if (m == NULL)
 483                                 errx(1, "%s", strerror(ENOMEM));
 484                         size = ktrlen;
 485                 }
 486                 if (ktrlen && fread_tail(m, ktrlen, 1) == 0)
 487                         errx(1, "data too short");
 488                 if (fetchprocinfo(&ktr_header, (u_int *)m) != 0)
 489                         continue;
 490                 if (pid && ktr_header.ktr_pid != pid &&
 491                     ktr_header.ktr_tid != pid)
 492                         continue;
 493                 if ((trpoints & (1<<ktr_header.ktr_type)) == 0)
 494                         continue;
 495                 sv_flags = findabi(&ktr_header);
 496                 dumpheader(&ktr_header, sv_flags);
 497                 drop_logged = 0;
 498                 switch (ktr_header.ktr_type) {
 499                 case KTR_SYSCALL:
 500                         ktrsyscall((struct ktr_syscall *)m, sv_flags);
 501                         break;
 502                 case KTR_SYSRET:
 503                         ktrsysret((struct ktr_sysret *)m, sv_flags);
 504                         break;
 505                 case KTR_NAMEI:
 506                 case KTR_SYSCTL:
 507                         ktrnamei(m, ktrlen);
 508                         break;
 509                 case KTR_GENIO:
 510                         ktrgenio((struct ktr_genio *)m, ktrlen);
 511                         break;
 512                 case KTR_PSIG:
 513                         ktrpsig((struct ktr_psig *)m);
 514                         break;
 515                 case KTR_CSW:
 516                         if (ktrlen == sizeof(struct ktr_csw_old))
 517                                 ktrcsw_old((struct ktr_csw_old *)m);
 518                         else
 519                                 ktrcsw((struct ktr_csw *)m);
 520                         break;
 521                 case KTR_USER:
 522                         ktruser(ktrlen, m);
 523                         break;
 524                 case KTR_STRUCT:
 525                         ktrstruct(m, ktrlen);
 526                         break;
 527                 case KTR_CAPFAIL:
 528                         ktrcapfail((struct ktr_cap_fail *)m);
 529                         break;
 530                 case KTR_FAULT:
 531                         ktrfault((struct ktr_fault *)m);
 532                         break;
 533                 case KTR_FAULTEND:
 534                         ktrfaultend((struct ktr_faultend *)m);
 535                         break;
 536                 case KTR_STRUCT_ARRAY:
 537                         ktrstructarray((struct ktr_struct_array *)m, ktrlen);
 538                         break;
 539                 default:
 540                         printf("\n");
 541                         break;
 542                 }
 543                 if (tail)
 544                         fflush(stdout);
 545         }
 546         return 0;
 547 }
 548
 549 int
 550 fread_tail(void *buf, int size, int num)
 551 {
 552         int i;
 553
 554         while ((i = fread(buf, size, num, stdin)) == 0 && tail) {
 555                 sleep(1);
 556                 clearerr(stdin);
 557         }
 558         return (i);
 559 }
 560
 561 int
 562 fetchprocinfo(struct ktr_header *kth, u_int *flags)
 563 {
 564         struct proc_info *pi;
 565
 566         switch (kth->ktr_type) {
 567         case KTR_PROCCTOR:
 568                 TAILQ_FOREACH(pi, &trace_procs, info) {
 569                         if (pi->pid == kth->ktr_pid) {
 570                                 TAILQ_REMOVE(&trace_procs, pi, info);
 571                                 break;
 572                         }
 573                 }
 574                 pi = malloc(sizeof(struct proc_info));
 575                 if (pi == NULL)
 576                         errx(1, "%s", strerror(ENOMEM));
 577                 pi->sv_flags = *flags;
 578                 pi->pid = kth->ktr_pid;
 579                 TAILQ_INSERT_TAIL(&trace_procs, pi, info);
 580                 return (1);
 581
 582         case KTR_PROCDTOR:
 583                 TAILQ_FOREACH(pi, &trace_procs, info) {
 584                         if (pi->pid == kth->ktr_pid) {
 585                                 TAILQ_REMOVE(&trace_procs, pi, info);
 586                                 free(pi);
 587                                 break;
 588                         }
 589                 }
 590                 return (1);
 591         }
 592
 593         return (0);
 594 }
 595
 596 u_int
 597 findabi(struct ktr_header *kth)
 598 {
 599         struct proc_info *pi;
 600
 601         TAILQ_FOREACH(pi, &trace_procs, info) {
 602                 if (pi->pid == kth->ktr_pid) {
 603                         return (pi->sv_flags);
 604                 }
 605         }
 606         return (0);
 607 }
 608
 609 void
 610 dumpheader(struct ktr_header *kth, u_int sv_flags)
 611 {
 612         static char unknown[64];
 613         static struct timeval prevtime, prevtime_e;
 614         struct timeval temp;
 615         const char *abi;
 616         const char *arch;
 617         const char *type;
 618         const char *sign;
 619
 620         switch (kth->ktr_type) {
 621         case KTR_SYSCALL:
 622                 type = "CALL";
 623                 break;
 624         case KTR_SYSRET:
 625                 type = "RET ";
 626                 break;
 627         case KTR_NAMEI:
 628                 type = "NAMI";
 629                 break;
 630         case KTR_GENIO:
 631                 type = "GIO ";
 632                 break;
 633         case KTR_PSIG:
 634                 type = "PSIG";
 635                 break;
 636         case KTR_CSW:
 637                 type = "CSW ";
 638                 break;
 639         case KTR_USER:
 640                 type = "USER";
 641                 break;
 642         case KTR_STRUCT:
 643         case KTR_STRUCT_ARRAY:
 644                 type = "STRU";
 645                 break;
 646         case KTR_SYSCTL:
 647                 type = "SCTL";
 648                 break;
 649         case KTR_CAPFAIL:
 650                 type = "CAP ";
 651                 break;
 652         case KTR_FAULT:
 653                 type = "PFLT";
 654                 break;
 655         case KTR_FAULTEND:
 656                 type = "PRET";
 657                 break;
 658         default:
 659                 sprintf(unknown, "UNKNOWN(%d)", kth->ktr_type);
 660                 type = unknown;
 661         }
 662
 663         /*
 664          * The ktr_tid field was previously the ktr_buffer field, which held
 665          * the kernel pointer value for the buffer associated with data
 666          * following the record header.  It now holds a threadid, but only
 667          * for trace files after the change.  Older trace files still contain
 668          * kernel pointers.  Detect this and suppress the results by printing
 669          * negative tid's as 0.
 670          */
 671         if (threads)
 672                 printf("%6jd %6jd %-8.*s ", (intmax_t)kth->ktr_pid,
 673                     kth->ktr_tid > 0 ? (intmax_t)kth->ktr_tid : 0,
 674                     MAXCOMLEN, kth->ktr_comm);
 675         else
 676                 printf("%6jd %-8.*s ", (intmax_t)kth->ktr_pid, MAXCOMLEN,
 677                     kth->ktr_comm);
 678         if (timestamp) {
 679                 if (timestamp & TIMESTAMP_ABSOLUTE) {
 680                         printf("%jd.%06ld ", (intmax_t)kth->ktr_time.tv_sec,
 681                             kth->ktr_time.tv_usec);
 682                 }
 683                 if (timestamp & TIMESTAMP_ELAPSED) {
 684                         if (prevtime_e.tv_sec == 0)
 685                                 prevtime_e = kth->ktr_time;
 686                         timersub(&kth->ktr_time, &prevtime_e, &temp);
 687                         printf("%jd.%06ld ", (intmax_t)temp.tv_sec,
 688                             temp.tv_usec);
 689                 }
 690                 if (timestamp & TIMESTAMP_RELATIVE) {
 691                         if (prevtime.tv_sec == 0)
 692                                 prevtime = kth->ktr_time;
 693                         if (timercmp(&kth->ktr_time, &prevtime, <)) {
 694                                 timersub(&prevtime, &kth->ktr_time, &temp);
 695                                 sign = "-";
 696                         } else {
 697                                 timersub(&kth->ktr_time, &prevtime, &temp);
 698                                 sign = "";
 699                         }
 700                         prevtime = kth->ktr_time;
 701                         printf("%s%jd.%06ld ", sign, (intmax_t)temp.tv_sec,
 702                             temp.tv_usec);
 703                 }
 704         }
 705         printf("%s  ", type);
 706         if (abiflag != 0) {
 707                 switch (sv_flags & SV_ABI_MASK) {
 708                 case SV_ABI_LINUX:
 709                         abi = "L";
 710                         break;
 711                 case SV_ABI_FREEBSD:
 712                         abi = "F";
 713                         break;
 714                 case SV_ABI_CLOUDABI:
 715                         abi = "C";
 716                         break;
 717                 default:
 718                         abi = "U";
 719                         break;
 720                 }
 721
 722                 if ((sv_flags & SV_LP64) != 0)
 723                         arch = "64";
 724                 else if ((sv_flags & SV_ILP32) != 0)
 725                         arch = "32";
 726                 else
 727                         arch = "00";
 728
 729                 printf("%s%s  ", abi, arch);
 730         }
 731 }
 732
 733 #include <sys/syscall.h>
 734
 735 static void
 736 ioctlname(unsigned long val)
 737 {
 738         const char *str;
 739
 740         str = sysdecode_ioctlname(val);
 741         if (str != NULL)
 742                 printf("%s", str);
 743         else if (decimal)
 744                 printf("%lu", val);
 745         else
 746                 printf("%#lx", val);
 747 }
 748
 749 static enum sysdecode_abi
 750 syscallabi(u_int sv_flags)
 751 {
 752
 753         if (sv_flags == 0)
 754                 return (SYSDECODE_ABI_FREEBSD);
 755         switch (sv_flags & SV_ABI_MASK) {
 756         case SV_ABI_FREEBSD:
 757                 return (SYSDECODE_ABI_FREEBSD);
 758         case SV_ABI_LINUX:
 759 #ifdef __LP64__
 760                 if (sv_flags & SV_ILP32)
 761                         return (SYSDECODE_ABI_LINUX32);
 762 #endif
 763                 return (SYSDECODE_ABI_LINUX);
 764         case SV_ABI_CLOUDABI:
 765                 return (SYSDECODE_ABI_CLOUDABI64);
 766         default:
 767                 return (SYSDECODE_ABI_UNKNOWN);
 768         }
 769 }
 770
 771 static void
 772 syscallname(u_int code, u_int sv_flags)
 773 {
 774         const char *name;
 775
 776         name = sysdecode_syscallname(syscallabi(sv_flags), code);
 777         if (name == NULL)
 778                 printf("[%d]", code);
 779         else {
 780                 printf("%s", name);
 781                 if (syscallno)
 782                         printf("[%d]", code);
 783         }
 784 }
 785
 786 static void
 787 print_signal(int signo)
 788 {
 789         const char *signame;
 790
 791         signame = sysdecode_signal(signo);
 792         if (signame != NULL)
 793                 printf("%s", signame);
 794         else
 795                 printf("SIG %d", signo);
 796 }
 797
 798 void
 799 ktrsyscall(struct ktr_syscall *ktr, u_int sv_flags)
 800 {
 801         int narg = ktr->ktr_narg;
 802         register_t *ip, *first;
 803         intmax_t arg;
 804         int quad_align, quad_slots;
 805
 806         syscallname(ktr->ktr_code, sv_flags);
 807         ip = first = &ktr->ktr_args[0];
 808         if (narg) {
 809                 char c = '(';
 810                 if (fancy &&
 811                     (sv_flags == 0 ||
 812                     (sv_flags & SV_ABI_MASK) == SV_ABI_FREEBSD)) {
 813                         quad_align = 0;
 814                         if (sv_flags & SV_ILP32) {
 815 #ifdef __powerpc__
 816                                 quad_align = 1;
 817 #endif
 818                                 quad_slots = 2;
 819                         } else
 820                                 quad_slots = 1;
 821                         switch (ktr->ktr_code) {
 822                         case SYS_bindat:
 823                         case SYS_chflagsat:
 824                         case SYS_connectat:
 825                         case SYS_faccessat:
 826                         case SYS_fchmodat:
 827                         case SYS_fchownat:
 828                         case SYS_fstatat:
 829                         case SYS_futimesat:
 830                         case SYS_linkat:
 831                         case SYS_mkdirat:
 832                         case SYS_mkfifoat:
 833                         case SYS_mknodat:
 834                         case SYS_openat:
 835                         case SYS_readlinkat:
 836                         case SYS_renameat:
 837                         case SYS_unlinkat:
 838                         case SYS_utimensat:
 839                                 putchar('(');
 840                                 print_integer_arg_valid(sysdecode_atfd, *ip);
 841                                 c = ',';
 842                                 ip++;
 843                                 narg--;
 844                                 break;
 845                         }
 846                         switch (ktr->ktr_code) {
 847                         case SYS_ioctl: {
 848                                 print_number(ip, narg, c);
 849                                 putchar(c);
 850                                 ioctlname(*ip);
 851                                 c = ',';
 852                                 ip++;
 853                                 narg--;
 854                                 break;
 855                         }
 856                         case SYS_ptrace:
 857                                 putchar('(');
 858                                 print_integer_arg(sysdecode_ptrace_request, *ip);
 859                                 c = ',';
 860                                 ip++;
 861                                 narg--;
 862                                 break;
 863                         case SYS_access:
 864                         case SYS_eaccess:
 865                         case SYS_faccessat:
 866                                 print_number(ip, narg, c);
 867                                 putchar(',');
 868                                 print_mask_arg(sysdecode_access_mode, *ip);
 869                                 ip++;
 870                                 narg--;
 871                                 break;
 872                         case SYS_open:
 873                         case SYS_openat:
 874                                 print_number(ip, narg, c);
 875                                 putchar(',');
 876                                 print_mask_arg(sysdecode_open_flags, ip[0]);
 877                                 if ((ip[0] & O_CREAT) == O_CREAT) {
 878                                         putchar(',');
 879                                         decode_filemode(ip[1]);
 880                                 }
 881                                 ip += 2;
 882                                 narg -= 2;
 883                                 break;
 884                         case SYS_wait4:
 885                                 print_number(ip, narg, c);
 886                                 print_number(ip, narg, c);
 887                                 putchar(',');
 888                                 print_mask_arg0(sysdecode_wait4_options, *ip);
 889                                 ip++;
 890                                 narg--;
 891                                 break;
 892                         case SYS_wait6:
 893                                 putchar('(');
 894                                 print_integer_arg(sysdecode_idtype, *ip);
 895                                 c = ',';
 896                                 ip++;
 897                                 narg--;
 898                                 print_number64(first, ip, narg, c);
 899                                 print_number(ip, narg, c);
 900                                 putchar(',');
 901                                 print_mask_arg(sysdecode_wait6_options, *ip);
 902                                 ip++;
 903                                 narg--;
 904                                 break;
 905                         case SYS_chmod:
 906                         case SYS_fchmod:
 907                         case SYS_lchmod:
 908                         case SYS_fchmodat:
 909                                 print_number(ip, narg, c);
 910                                 putchar(',');
 911                                 decode_filemode(*ip);
 912                                 ip++;
 913                                 narg--;
 914                                 break;
 915                         case SYS_mknodat:
 916                                 print_number(ip, narg, c);
 917                                 putchar(',');
 918                                 decode_filemode(*ip);
 919                                 ip++;
 920                                 narg--;
 921                                 break;
 922                         case SYS_getfsstat:
 923                                 print_number(ip, narg, c);
 924                                 print_number(ip, narg, c);
 925                                 putchar(',');
 926                                 print_integer_arg(sysdecode_getfsstat_mode, *ip);
 927                                 ip++;
 928                                 narg--;
 929                                 break;
 930                         case SYS_mount:
 931                                 print_number(ip, narg, c);
 932                                 print_number(ip, narg, c);
 933                                 putchar(',');
 934                                 print_mask_arg(sysdecode_mount_flags, *ip);
 935                                 ip++;
 936                                 narg--;
 937                                 break;
 938                         case SYS_unmount:
 939                                 print_number(ip, narg, c);
 940                                 putchar(',');
 941                                 print_mask_arg(sysdecode_mount_flags, *ip);
 942                                 ip++;
 943                                 narg--;
 944                                 break;
 945                         case SYS_recvmsg:
 946                         case SYS_sendmsg:
 947                                 print_number(ip, narg, c);
 948                                 print_number(ip, narg, c);
 949                                 putchar(',');
 950                                 print_mask_arg0(sysdecode_msg_flags, *ip);
 951                                 ip++;
 952                                 narg--;
 953                                 break;
 954                         case SYS_recvfrom:
 955                         case SYS_sendto:
 956                                 print_number(ip, narg, c);
 957                                 print_number(ip, narg, c);
 958                                 print_number(ip, narg, c);
 959                                 putchar(',');
 960                                 print_mask_arg0(sysdecode_msg_flags, *ip);
 961                                 ip++;
 962                                 narg--;
 963                                 break;
 964                         case SYS_chflags:
 965                         case SYS_chflagsat:
 966                         case SYS_fchflags:
 967                         case SYS_lchflags:
 968                                 print_number(ip, narg, c);
 969                                 putchar(',');
 970                                 decode_fileflags(*ip);
 971                                 ip++;
 972                                 narg--;
 973                                 break;
 974                         case SYS_kill:
 975                                 print_number(ip, narg, c);
 976                                 putchar(',');
 977                                 print_signal(*ip);
 978                                 ip++;
 979                                 narg--;
 980                                 break;
 981                         case SYS_reboot:
 982                                 putchar('(');
 983                                 print_mask_arg(sysdecode_reboot_howto, *ip);
 984                                 ip++;
 985                                 narg--;
 986                                 break;
 987                         case SYS_umask:
 988                                 putchar('(');
 989                                 decode_filemode(*ip);
 990                                 ip++;
 991                                 narg--;
 992                                 break;
 993                         case SYS_msync:
 994                                 print_number(ip, narg, c);
 995                                 print_number(ip, narg, c);
 996                                 putchar(',');
 997                                 print_mask_arg(sysdecode_msync_flags, *ip);
 998                                 ip++;
 999                                 narg--;
1000                                 break;
1001 #ifdef SYS_freebsd6_mmap
1002                         case SYS_freebsd6_mmap:
1003                                 print_number(ip, narg, c);
1004                                 print_number(ip, narg, c);
1005                                 putchar(',');
1006                                 print_mask_arg(sysdecode_mmap_prot, *ip);
1007                                 putchar(',');
1008                                 ip++;
1009                                 narg--;
1010                                 print_mask_arg(sysdecode_mmap_flags, *ip);
1011                                 ip++;
1012                                 narg--;
1013                                 break;
1014 #endif
1015                         case SYS_mmap:
1016                                 print_number(ip, narg, c);
1017                                 print_number(ip, narg, c);
1018                                 putchar(',');
1019                                 print_mask_arg(sysdecode_mmap_prot, *ip);
1020                                 putchar(',');
1021                                 ip++;
1022                                 narg--;
1023                                 print_mask_arg(sysdecode_mmap_flags, *ip);
1024                                 ip++;
1025                                 narg--;
1026                                 break;
1027                         case SYS_mprotect:
1028                                 print_number(ip, narg, c);
1029                                 print_number(ip, narg, c);
1030                                 putchar(',');
1031                                 print_mask_arg(sysdecode_mmap_prot, *ip);
1032                                 ip++;
1033                                 narg--;
1034                                 break;
1035                         case SYS_madvise:
1036                                 print_number(ip, narg, c);
1037                                 print_number(ip, narg, c);
1038                                 putchar(',');
1039                                 print_integer_arg(sysdecode_madvice, *ip);
1040                                 ip++;
1041                                 narg--;
1042                                 break;
1043                         case SYS_pathconf:
1044                         case SYS_lpathconf:
1045                         case SYS_fpathconf:
1046                                 print_number(ip, narg, c);
1047                                 putchar(',');
1048                                 print_integer_arg(sysdecode_pathconf_name, *ip);
1049                                 ip++;
1050                                 narg--;
1051                                 break;
1052                         case SYS_getpriority:
1053                         case SYS_setpriority:
1054                                 putchar('(');
1055                                 print_integer_arg(sysdecode_prio_which, *ip);
1056                                 c = ',';
1057                                 ip++;
1058                                 narg--;
1059                                 break;
1060                         case SYS_fcntl:
1061                                 print_number(ip, narg, c);
1062                                 putchar(',');
1063                                 print_integer_arg(sysdecode_fcntl_cmd, ip[0]);
1064                                 if (sysdecode_fcntl_arg_p(ip[0])) {
1065                                         putchar(',');
1066                                         if (ip[0] == F_SETFL)
1067                                                 print_mask_arg(
1068                                                     sysdecode_fcntl_fileflags,
1069                                                         ip[1]);
1070                                         else
1071                                                 sysdecode_fcntl_arg(stdout,
1072                                                     ip[0], ip[1],
1073                                                     decimal ? 10 : 16);
1074                                 }
1075                                 ip += 2;
1076                                 narg -= 2;
1077                                 break;
1078                         case SYS_socket: {
1079                                 int sockdomain;
1080                                 putchar('(');
1081                                 sockdomain = *ip;
1082                                 print_integer_arg(sysdecode_socketdomain,
1083                                     sockdomain);
1084                                 ip++;
1085                                 narg--;
1086                                 putchar(',');
1087                                 print_mask_arg(sysdecode_socket_type, *ip);
1088                                 ip++;
1089                                 narg--;
1090                                 if (sockdomain == PF_INET ||
1091                                     sockdomain == PF_INET6) {
1092                                         putchar(',');
1093                                         print_integer_arg(sysdecode_ipproto,
1094                                             *ip);
1095                                         ip++;
1096                                         narg--;
1097                                 }
1098                                 c = ',';
1099                                 break;
1100                         }
1101                         case SYS_setsockopt:
1102                         case SYS_getsockopt: {
1103                                 const char *str;
1104
1105                                 print_number(ip, narg, c);
1106                                 putchar(',');
1107                                 print_integer_arg_valid(sysdecode_sockopt_level,
1108                                     *ip);
1109                                 str = sysdecode_sockopt_name(ip[0], ip[1]);
1110                                 if (str != NULL) {
1111                                         printf(",%s", str);
1112                                         ip++;
1113                                         narg--;
1114                                 }
1115                                 ip++;
1116                                 narg--;
1117                                 break;
1118                         }
1119 #ifdef SYS_freebsd6_lseek
1120                         case SYS_freebsd6_lseek:
1121                                 print_number(ip, narg, c);
1122                                 /* Hidden 'pad' argument, not in lseek(2) */
1123                                 print_number(ip, narg, c);
1124                                 print_number64(first, ip, narg, c);
1125                                 putchar(',');
1126                                 print_integer_arg(sysdecode_whence, *ip);
1127                                 ip++;
1128                                 narg--;
1129                                 break;
1130 #endif
1131                         case SYS_lseek:
1132                                 print_number(ip, narg, c);
1133                                 print_number64(first, ip, narg, c);
1134                                 putchar(',');
1135                                 print_integer_arg(sysdecode_whence, *ip);
1136                                 ip++;
1137                                 narg--;
1138                                 break;
1139                         case SYS_flock:
1140                                 print_number(ip, narg, c);
1141                                 putchar(',');
1142                                 print_mask_arg(sysdecode_flock_operation, *ip);
1143                                 ip++;
1144                                 narg--;
1145                                 break;
1146                         case SYS_mkfifo:
1147                         case SYS_mkfifoat:
1148                         case SYS_mkdir:
1149                         case SYS_mkdirat:
1150                                 print_number(ip, narg, c);
1151                                 putchar(',');
1152                                 decode_filemode(*ip);
1153                                 ip++;
1154                                 narg--;
1155                                 break;
1156                         case SYS_shutdown:
1157                                 print_number(ip, narg, c);
1158                                 putchar(',');
1159                                 print_integer_arg(sysdecode_shutdown_how, *ip);
1160                                 ip++;
1161                                 narg--;
1162                                 break;
1163                         case SYS_socketpair:
1164                                 putchar('(');
1165                                 print_integer_arg(sysdecode_socketdomain, *ip);
1166                                 ip++;
1167                                 narg--;
1168                                 putchar(',');
1169                                 print_mask_arg(sysdecode_socket_type, *ip);
1170                                 ip++;
1171                                 narg--;
1172                                 c = ',';
1173                                 break;
1174                         case SYS_getrlimit:
1175                         case SYS_setrlimit:
1176                                 putchar('(');
1177                                 print_integer_arg(sysdecode_rlimit, *ip);
1178                                 ip++;
1179                                 narg--;
1180                                 c = ',';
1181                                 break;
1182                         case SYS_getrusage:
1183                                 putchar('(');
1184                                 print_integer_arg(sysdecode_getrusage_who, *ip);
1185                                 ip++;
1186                                 narg--;
1187                                 c = ',';
1188                                 break;
1189                         case SYS_quotactl:
1190                                 print_number(ip, narg, c);
1191                                 putchar(',');
1192                                 if (!sysdecode_quotactl_cmd(stdout, *ip)) {
1193                                         if (decimal)
1194                                                 printf("<invalid=%d>", (int)*ip);
1195                                         else
1196                                                 printf("<invalid=%#x>",
1197                                                     (int)*ip);
1198                                 }
1199                                 ip++;
1200                                 narg--;
1201                                 c = ',';
1202                                 break;
1203                         case SYS_nfssvc:
1204                                 putchar('(');
1205                                 print_integer_arg(sysdecode_nfssvc_flags, *ip);
1206                                 ip++;
1207                                 narg--;
1208                                 c = ',';
1209                                 break;
1210                         case SYS_rtprio:
1211                         case SYS_rtprio_thread:
1212                                 putchar('(');
1213                                 print_integer_arg(sysdecode_rtprio_function,
1214                                     *ip);
1215                                 ip++;
1216                                 narg--;
1217                                 c = ',';
1218                                 break;
1219                         case SYS___semctl:
1220                                 print_number(ip, narg, c);
1221                                 print_number(ip, narg, c);
1222                                 putchar(',');
1223                                 print_integer_arg(sysdecode_semctl_cmd, *ip);
1224                                 ip++;
1225                                 narg--;
1226                                 break;
1227                         case SYS_semget:
1228                                 print_number(ip, narg, c);
1229                                 print_number(ip, narg, c);
1230                                 putchar(',');
1231                                 print_mask_arg(sysdecode_semget_flags, *ip);
1232                                 ip++;
1233                                 narg--;
1234                                 break;
1235                         case SYS_msgctl:
1236                                 print_number(ip, narg, c);
1237                                 putchar(',');
1238                                 print_integer_arg(sysdecode_msgctl_cmd, *ip);
1239                                 ip++;
1240                                 narg--;
1241                                 break;
1242                         case SYS_shmat:
1243                                 print_number(ip, narg, c);
1244                                 print_number(ip, narg, c);
1245                                 putchar(',');
1246                                 print_mask_arg(sysdecode_shmat_flags, *ip);
1247                                 ip++;
1248                                 narg--;
1249                                 break;
1250                         case SYS_shmctl:
1251                                 print_number(ip, narg, c);
1252                                 putchar(',');
1253                                 print_integer_arg(sysdecode_shmctl_cmd, *ip);
1254                                 ip++;
1255                                 narg--;
1256                                 break;
1257 #ifdef SYS_freebsd12_shm_open
1258                         case SYS_freebsd12_shm_open:
1259                                 if (ip[0] == (uintptr_t)SHM_ANON) {
1260                                         printf("(SHM_ANON");
1261                                         ip++;
1262                                 } else {
1263                                         print_number(ip, narg, c);
1264                                 }
1265                                 putchar(',');
1266                                 print_mask_arg(sysdecode_open_flags, ip[0]);
1267                                 putchar(',');
1268                                 decode_filemode(ip[1]);
1269                                 ip += 2;
1270                                 narg -= 2;
1271                                 break;
1272 #endif
1273                         case SYS_shm_open2:
1274                                 if (ip[0] == (uintptr_t)SHM_ANON) {
1275                                         printf("(SHM_ANON");
1276                                         ip++;
1277                                 } else {
1278                                         print_number(ip, narg, c);
1279                                 }
1280                                 putchar(',');
1281                                 print_mask_arg(sysdecode_open_flags, ip[0]);
1282                                 putchar(',');
1283                                 decode_filemode(ip[1]);
1284                                 putchar(',');
1285                                 print_mask_arg(sysdecode_shmflags, ip[2]);
1286                                 ip += 3;
1287                                 narg -= 3;
1288                                 break;
1289                         case SYS_minherit:
1290                                 print_number(ip, narg, c);
1291                                 print_number(ip, narg, c);
1292                                 putchar(',');
1293                                 print_integer_arg(sysdecode_minherit_inherit,
1294                                     *ip);
1295                                 ip++;
1296                                 narg--;
1297                                 break;
1298                         case SYS_rfork:
1299                                 putchar('(');
1300                                 print_mask_arg(sysdecode_rfork_flags, *ip);
1301                                 ip++;
1302                                 narg--;
1303                                 c = ',';
1304                                 break;
1305                         case SYS_lio_listio:
1306                                 putchar('(');
1307                                 print_integer_arg(sysdecode_lio_listio_mode,
1308                                     *ip);
1309                                 ip++;
1310                                 narg--;
1311                                 c = ',';
1312                                 break;
1313                         case SYS_mlockall:
1314                                 putchar('(');
1315                                 print_mask_arg(sysdecode_mlockall_flags, *ip);
1316                                 ip++;
1317                                 narg--;
1318                                 break;
1319                         case SYS_sched_setscheduler:
1320                                 print_number(ip, narg, c);
1321                                 putchar(',');
1322                                 print_integer_arg(sysdecode_scheduler_policy,
1323                                     *ip);
1324                                 ip++;
1325                                 narg--;
1326                                 break;
1327                         case SYS_sched_get_priority_max:
1328                         case SYS_sched_get_priority_min:
1329                                 putchar('(');
1330                                 print_integer_arg(sysdecode_scheduler_policy,
1331                                     *ip);
1332                                 ip++;
1333                                 narg--;
1334                                 break;
1335                         case SYS_sendfile:
1336                                 print_number(ip, narg, c);
1337                                 print_number(ip, narg, c);
1338                                 print_number(ip, narg, c);
1339                                 print_number(ip, narg, c);
1340                                 print_number(ip, narg, c);
1341                                 print_number(ip, narg, c);
1342                                 putchar(',');
1343                                 print_mask_arg(sysdecode_sendfile_flags, *ip);
1344                                 ip++;
1345                                 narg--;
1346                                 break;
1347                         case SYS_kldsym:
1348                                 print_number(ip, narg, c);
1349                                 putchar(',');
1350                                 print_integer_arg(sysdecode_kldsym_cmd, *ip);
1351                                 ip++;
1352                                 narg--;
1353                                 break;
1354                         case SYS_sigprocmask:
1355                                 putchar('(');
1356                                 print_integer_arg(sysdecode_sigprocmask_how,
1357                                     *ip);
1358                                 ip++;
1359                                 narg--;
1360                                 c = ',';
1361                                 break;
1362                         case SYS___acl_get_file:
1363                         case SYS___acl_set_file:
1364                         case SYS___acl_get_fd:
1365                         case SYS___acl_set_fd:
1366                         case SYS___acl_delete_file:
1367                         case SYS___acl_delete_fd:
1368                         case SYS___acl_aclcheck_file:
1369                         case SYS___acl_aclcheck_fd:
1370                         case SYS___acl_get_link:
1371                         case SYS___acl_set_link:
1372                         case SYS___acl_delete_link:
1373                         case SYS___acl_aclcheck_link:
1374                                 print_number(ip, narg, c);
1375                                 putchar(',');
1376                                 print_integer_arg(sysdecode_acltype, *ip);
1377                                 ip++;
1378                                 narg--;
1379                                 break;
1380                         case SYS_sigaction:
1381                                 putchar('(');
1382                                 print_signal(*ip);
1383                                 ip++;
1384                                 narg--;
1385                                 c = ',';
1386                                 break;
1387                         case SYS_extattrctl:
1388                                 print_number(ip, narg, c);
1389                                 putchar(',');
1390                                 print_integer_arg(sysdecode_extattrnamespace,
1391                                     *ip);
1392                                 ip++;
1393                                 narg--;
1394                                 break;
1395                         case SYS_nmount:
1396                                 print_number(ip, narg, c);
1397                                 print_number(ip, narg, c);
1398                                 putchar(',');
1399                                 print_mask_arg(sysdecode_mount_flags, *ip);
1400                                 ip++;
1401                                 narg--;
1402                                 break;
1403                         case SYS_thr_create:
1404                                 print_number(ip, narg, c);
1405                                 print_number(ip, narg, c);
1406                                 putchar(',');
1407                                 print_mask_arg(sysdecode_thr_create_flags, *ip);
1408                                 ip++;
1409                                 narg--;
1410                                 break;
1411                         case SYS_thr_kill:
1412                                 print_number(ip, narg, c);
1413                                 putchar(',');
1414                                 print_signal(*ip);
1415                                 ip++;
1416                                 narg--;
1417                                 break;
1418                         case SYS_kldunloadf:
1419                                 print_number(ip, narg, c);
1420                                 putchar(',');
1421                                 print_integer_arg(sysdecode_kldunload_flags,
1422                                     *ip);
1423                                 ip++;
1424                                 narg--;
1425                                 break;
1426                         case SYS_linkat:
1427                         case SYS_renameat:
1428                         case SYS_symlinkat:
1429                                 print_number(ip, narg, c);
1430                                 putchar(',');
1431                                 print_integer_arg_valid(sysdecode_atfd, *ip);
1432                                 ip++;
1433                                 narg--;
1434                                 print_number(ip, narg, c);
1435                                 break;
1436                         case SYS_cap_fcntls_limit:
1437                                 print_number(ip, narg, c);
1438                                 putchar(',');
1439                                 arg = *ip;
1440                                 ip++;
1441                                 narg--;
1442                                 print_mask_arg32(sysdecode_cap_fcntlrights, arg);
1443                                 break;
1444                         case SYS_posix_fadvise:
1445                                 print_number(ip, narg, c);
1446                                 print_number(ip, narg, c);
1447                                 print_number(ip, narg, c);
1448                                 (void)putchar(',');
1449                                 print_integer_arg(sysdecode_fadvice, *ip);
1450                                 ip++;
1451                                 narg--;
1452                                 break;
1453                         case SYS_procctl:
1454                                 putchar('(');
1455                                 print_integer_arg(sysdecode_idtype, *ip);
1456                                 c = ',';
1457                                 ip++;
1458                                 narg--;
1459                                 print_number64(first, ip, narg, c);
1460                                 putchar(',');
1461                                 print_integer_arg(sysdecode_procctl_cmd, *ip);
1462                                 ip++;
1463                                 narg--;
1464                                 break;
1465                         case SYS__umtx_op: {
1466                                 int op;
1467
1468                                 print_number(ip, narg, c);
1469                                 putchar(',');
1470                                 if (print_mask_arg_part(sysdecode_umtx_op_flags,
1471                                     *ip, &op))
1472                                         putchar('|');
1473                                 print_integer_arg(sysdecode_umtx_op, op);
1474                                 putchar('>');
1475                                 switch (*ip) {
1476                                 case UMTX_OP_CV_WAIT:
1477                                         ip++;
1478                                         narg--;
1479                                         putchar(',');
1480                                         print_mask_argul(
1481                                             sysdecode_umtx_cvwait_flags, *ip);
1482                                         break;
1483                                 case UMTX_OP_RW_RDLOCK:
1484                                         ip++;
1485                                         narg--;
1486                                         putchar(',');
1487                                         print_mask_argul(
1488                                             sysdecode_umtx_rwlock_flags, *ip);
1489                                         break;
1490                                 }
1491                                 ip++;
1492                                 narg--;
1493                                 break;
1494                         }
1495                         case SYS_ftruncate:
1496                         case SYS_truncate:
1497                                 print_number(ip, narg, c);
1498                                 print_number64(first, ip, narg, c);
1499                                 break;
1500                         case SYS_fchownat:
1501                                 print_number(ip, narg, c);
1502                                 print_number(ip, narg, c);
1503                                 print_number(ip, narg, c);
1504                                 break;
1505                         case SYS_fstatat:
1506                         case SYS_utimensat:
1507                                 print_number(ip, narg, c);
1508                                 print_number(ip, narg, c);
1509                                 break;
1510                         case SYS_unlinkat:
1511                                 print_number(ip, narg, c);
1512                                 break;
1513                         case SYS_sysarch:
1514                                 putchar('(');
1515                                 print_integer_arg(sysdecode_sysarch_number, *ip);
1516                                 ip++;
1517                                 narg--;
1518                                 c = ',';
1519                                 break;
1520                         }
1521                         switch (ktr->ktr_code) {
1522                         case SYS_chflagsat:
1523                         case SYS_fchownat:
1524                         case SYS_faccessat:
1525                         case SYS_fchmodat:
1526                         case SYS_fstatat:
1527                         case SYS_linkat:
1528                         case SYS_unlinkat:
1529                         case SYS_utimensat:
1530                                 putchar(',');
1531                                 print_mask_arg0(sysdecode_atflags, *ip);
1532                                 ip++;
1533                                 narg--;
1534                                 break;
1535                         }
1536                 }
1537                 while (narg > 0) {
1538                         print_number(ip, narg, c);
1539                 }
1540                 putchar(')');
1541         }
1542         putchar('\n');
1543 }
1544
1545 void
1546 ktrsysret(struct ktr_sysret *ktr, u_int sv_flags)
1547 {
1548         register_t ret = ktr->ktr_retval;
1549         int error = ktr->ktr_error;
1550
1551         syscallname(ktr->ktr_code, sv_flags);
1552         printf(" ");
1553
1554         if (error == 0) {
1555                 if (fancy) {
1556                         printf("%ld", (long)ret);
1557                         if (ret < 0 || ret > 9)
1558                                 printf("/%#lx", (unsigned long)ret);
1559                 } else {
1560                         if (decimal)
1561                                 printf("%ld", (long)ret);
1562                         else
1563                                 printf("%#lx", (unsigned long)ret);
1564                 }
1565         } else if (error == ERESTART)
1566                 printf("RESTART");
1567         else if (error == EJUSTRETURN)
1568                 printf("JUSTRETURN");
1569         else {
1570                 printf("-1 errno %d", sysdecode_freebsd_to_abi_errno(
1571                     syscallabi(sv_flags), error));
1572                 if (fancy)
1573                         printf(" %s", strerror(ktr->ktr_error));
1574         }
1575         putchar('\n');
1576 }
1577
1578 void
1579 ktrnamei(char *cp, int len)
1580 {
1581         printf("\"%.*s\"\n", len, cp);
1582 }
1583
1584 void
1585 hexdump(char *p, int len, int screenwidth)
1586 {
1587         int n, i;
1588         int width;
1589
1590         width = 0;
1591         do {
1592                 width += 2;
1593                 i = 13;                 /* base offset */
1594                 i += (width / 2) + 1;   /* spaces every second byte */
1595                 i += (width * 2);       /* width of bytes */
1596                 i += 3;                 /* "  |" */
1597                 i += width;             /* each byte */
1598                 i += 1;                 /* "|" */
1599         } while (i < screenwidth);
1600         width -= 2;
1601
1602         for (n = 0; n < len; n += width) {
1603                 for (i = n; i < n + width; i++) {
1604                         if ((i % width) == 0) { /* beginning of line */
1605                                 printf("       0x%04x", i);
1606                         }
1607                         if ((i % 2) == 0) {
1608                                 printf(" ");
1609                         }
1610                         if (i < len)
1611                                 printf("%02x", p[i] & 0xff);
1612                         else
1613                                 printf("  ");
1614                 }
1615                 printf("  |");
1616                 for (i = n; i < n + width; i++) {
1617                         if (i >= len)
1618                                 break;
1619                         if (p[i] >= ' ' && p[i] <= '~')
1620                                 printf("%c", p[i]);
1621                         else
1622                                 printf(".");
1623                 }
1624                 printf("|\n");
1625         }
1626         if ((i % width) != 0)
1627                 printf("\n");
1628 }
1629
1630 void
1631 visdump(char *dp, int datalen, int screenwidth)
1632 {
1633         int col = 0;
1634         char *cp;
1635         int width;
1636         char visbuf[5];
1637
1638         printf("       \"");
1639         col = 8;
1640         for (;datalen > 0; datalen--, dp++) {
1641                  vis(visbuf, *dp, VIS_CSTYLE, *(dp+1));
1642                 cp = visbuf;
1643                 /*
1644                  * Keep track of printables and
1645                  * space chars (like fold(1)).
1646                  */
1647                 if (col == 0) {
1648                         putchar('\t');
1649                         col = 8;
1650                 }
1651                 switch(*cp) {
1652                 case '\n':
1653                         col = 0;
1654                         putchar('\n');
1655                         continue;
1656                 case '\t':
1657                         width = 8 - (col&07);
1658                         break;
1659                 default:
1660                         width = strlen(cp);
1661                 }
1662                 if (col + width > (screenwidth-2)) {
1663                         printf("\\\n\t");
1664                         col = 8;
1665                 }
1666                 col += width;
1667                 do {
1668                         putchar(*cp++);
1669                 } while (*cp);
1670         }
1671         if (col == 0)
1672                 printf("       ");
1673         printf("\"\n");
1674 }
1675
1676 void
1677 ktrgenio(struct ktr_genio *ktr, int len)
1678 {
1679         int datalen = len - sizeof (struct ktr_genio);
1680         char *dp = (char *)ktr + sizeof (struct ktr_genio);
1681         static int screenwidth = 0;
1682         int i, binary;
1683
1684         printf("fd %d %s %d byte%s\n", ktr->ktr_fd,
1685                 ktr->ktr_rw == UIO_READ ? "read" : "wrote", datalen,
1686                 datalen == 1 ? "" : "s");
1687         if (suppressdata)
1688                 return;
1689         if (screenwidth == 0) {
1690                 struct winsize ws;
1691
1692                 if (fancy && ioctl(fileno(stderr), TIOCGWINSZ, &ws) != -1 &&
1693                     ws.ws_col > 8)
1694                         screenwidth = ws.ws_col;
1695                 else
1696                         screenwidth = 80;
1697         }
1698         if (maxdata && datalen > maxdata)
1699                 datalen = maxdata;
1700
1701         for (i = 0, binary = 0; i < datalen && binary == 0; i++)  {
1702                 if (dp[i] >= 32 && dp[i] < 127)
1703                         continue;
1704                 if (dp[i] == 10 || dp[i] == 13 || dp[i] == 0 || dp[i] == 9)
1705                         continue;
1706                 binary = 1;
1707         }
1708         if (binary)
1709                 hexdump(dp, datalen, screenwidth);
1710         else
1711                 visdump(dp, datalen, screenwidth);
1712 }
1713
1714 void
1715 ktrpsig(struct ktr_psig *psig)
1716 {
1717         const char *str;
1718
1719         print_signal(psig->signo);
1720         if (psig->action == SIG_DFL) {
1721                 printf(" SIG_DFL");
1722         } else {
1723                 printf(" caught handler=0x%lx mask=0x%x",
1724                     (u_long)psig->action, psig->mask.__bits[0]);
1725         }
1726         printf(" code=");
1727         str = sysdecode_sigcode(psig->signo, psig->code);
1728         if (str != NULL)
1729                 printf("%s", str);
1730         else
1731                 printf("<invalid=%#x>", psig->code);
1732         putchar('\n');
1733 }
1734
1735 void
1736 ktrcsw_old(struct ktr_csw_old *cs)
1737 {
1738         printf("%s %s\n", cs->out ? "stop" : "resume",
1739                 cs->user ? "user" : "kernel");
1740 }
1741
1742 void
1743 ktrcsw(struct ktr_csw *cs)
1744 {
1745         printf("%s %s \"%s\"\n", cs->out ? "stop" : "resume",
1746             cs->user ? "user" : "kernel", cs->wmesg);
1747 }
1748
1749 void
1750 ktruser(int len, void *p)
1751 {
1752         unsigned char *cp;
1753
1754         if (sysdecode_utrace(stdout, p, len)) {
1755                 printf("\n");
1756                 return;
1757         }
1758
1759         printf("%d ", len);
1760         cp = p;
1761         while (len--)
1762                 if (decimal)
1763                         printf(" %d", *cp++);
1764                 else
1765                         printf(" %02x", *cp++);
1766         printf("\n");
1767 }
1768
1769 void
1770 ktrcaprights(cap_rights_t *rightsp)
1771 {
1772
1773         printf("cap_rights_t ");
1774         sysdecode_cap_rights(stdout, rightsp);
1775         printf("\n");
1776 }
1777
1778 static void
1779 ktrtimeval(struct timeval *tv)
1780 {
1781
1782         printf("{%ld, %ld}", (long)tv->tv_sec, tv->tv_usec);
1783 }
1784
1785 void
1786 ktritimerval(struct itimerval *it)
1787 {
1788
1789         printf("itimerval { .interval = ");
1790         ktrtimeval(&it->it_interval);
1791         printf(", .value = ");
1792         ktrtimeval(&it->it_value);
1793         printf(" }\n");
1794 }
1795
1796 void
1797 ktrsockaddr(struct sockaddr *sa)
1798 {
1799 /*
1800  TODO: Support additional address families
1801         #include <netsmb/netbios.h>
1802         struct sockaddr_nb      *nb;
1803 */
1804         const char *str;
1805         char addr[64];
1806
1807         /*
1808          * note: ktrstruct() has already verified that sa points to a
1809          * buffer at least sizeof(struct sockaddr) bytes long and exactly
1810          * sa->sa_len bytes long.
1811          */
1812         printf("struct sockaddr { ");
1813         str = sysdecode_sockaddr_family(sa->sa_family);
1814         if (str != NULL)
1815                 printf("%s", str);
1816         else
1817                 printf("<invalid=%d>", sa->sa_family);
1818         printf(", ");
1819
1820 #define check_sockaddr_len(n)                                   \
1821         if (sa_##n.s##n##_len < sizeof(struct sockaddr_##n)) {  \
1822                 printf("invalid");                              \
1823                 break;                                          \
1824         }
1825
1826         switch(sa->sa_family) {
1827         case AF_INET: {
1828                 struct sockaddr_in sa_in;
1829
1830                 memset(&sa_in, 0, sizeof(sa_in));
1831                 memcpy(&sa_in, sa, sa->sa_len);
1832                 check_sockaddr_len(in);
1833                 inet_ntop(AF_INET, &sa_in.sin_addr, addr, sizeof addr);
1834                 printf("%s:%u", addr, ntohs(sa_in.sin_port));
1835                 break;
1836         }
1837         case AF_INET6: {
1838                 struct sockaddr_in6 sa_in6;
1839
1840                 memset(&sa_in6, 0, sizeof(sa_in6));
1841                 memcpy(&sa_in6, sa, sa->sa_len);
1842                 check_sockaddr_len(in6);
1843                 getnameinfo((struct sockaddr *)&sa_in6, sizeof(sa_in6),
1844                     addr, sizeof(addr), NULL, 0, NI_NUMERICHOST);
1845                 printf("[%s]:%u", addr, htons(sa_in6.sin6_port));
1846                 break;
1847         }
1848         case AF_UNIX: {
1849                 struct sockaddr_un sa_un;
1850
1851                 memset(&sa_un, 0, sizeof(sa_un));
1852                 memcpy(&sa_un, sa, sa->sa_len);
1853                 printf("%.*s", (int)sizeof(sa_un.sun_path), sa_un.sun_path);
1854                 break;
1855         }
1856         default:
1857                 printf("unknown address family");
1858         }
1859         printf(" }\n");
1860 }
1861
1862 void
1863 ktrstat(struct stat *statp)
1864 {
1865         char mode[12], timestr[PATH_MAX + 4];
1866         struct passwd *pwd;
1867         struct group  *grp;
1868         struct tm *tm;
1869
1870         /*
1871          * note: ktrstruct() has already verified that statp points to a
1872          * buffer exactly sizeof(struct stat) bytes long.
1873          */
1874         printf("struct stat {");
1875         printf("dev=%ju, ino=%ju, ",
1876                 (uintmax_t)statp->st_dev, (uintmax_t)statp->st_ino);
1877         if (!resolv)
1878                 printf("mode=0%jo, ", (uintmax_t)statp->st_mode);
1879         else {
1880                 strmode(statp->st_mode, mode);
1881                 printf("mode=%s, ", mode);
1882         }
1883         printf("nlink=%ju, ", (uintmax_t)statp->st_nlink);
1884         if (!resolv) {
1885                 pwd = NULL;
1886         } else {
1887 #ifdef WITH_CASPER
1888                 if (cappwd != NULL)
1889                         pwd = cap_getpwuid(cappwd, statp->st_uid);
1890                 else
1891 #endif
1892                         pwd = getpwuid(statp->st_uid);
1893         }
1894         if (pwd == NULL)
1895                 printf("uid=%ju, ", (uintmax_t)statp->st_uid);
1896         else
1897                 printf("uid=\"%s\", ", pwd->pw_name);
1898         if (!resolv) {
1899                 grp = NULL;
1900         } else {
1901 #ifdef WITH_CASPER
1902                 if (capgrp != NULL)
1903                         grp = cap_getgrgid(capgrp, statp->st_gid);
1904                 else
1905 #endif
1906                         grp = getgrgid(statp->st_gid);
1907         }
1908         if (grp == NULL)
1909                 printf("gid=%ju, ", (uintmax_t)statp->st_gid);
1910         else
1911                 printf("gid=\"%s\", ", grp->gr_name);
1912         printf("rdev=%ju, ", (uintmax_t)statp->st_rdev);
1913         printf("atime=");
1914         if (!resolv)
1915                 printf("%jd", (intmax_t)statp->st_atim.tv_sec);
1916         else {
1917                 tm = localtime(&statp->st_atim.tv_sec);
1918                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1919                 printf("\"%s\"", timestr);
1920         }
1921         if (statp->st_atim.tv_nsec != 0)
1922                 printf(".%09ld, ", statp->st_atim.tv_nsec);
1923         else
1924                 printf(", ");
1925         printf("mtime=");
1926         if (!resolv)
1927                 printf("%jd", (intmax_t)statp->st_mtim.tv_sec);
1928         else {
1929                 tm = localtime(&statp->st_mtim.tv_sec);
1930                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1931                 printf("\"%s\"", timestr);
1932         }
1933         if (statp->st_mtim.tv_nsec != 0)
1934                 printf(".%09ld, ", statp->st_mtim.tv_nsec);
1935         else
1936                 printf(", ");
1937         printf("ctime=");
1938         if (!resolv)
1939                 printf("%jd", (intmax_t)statp->st_ctim.tv_sec);
1940         else {
1941                 tm = localtime(&statp->st_ctim.tv_sec);
1942                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1943                 printf("\"%s\"", timestr);
1944         }
1945         if (statp->st_ctim.tv_nsec != 0)
1946                 printf(".%09ld, ", statp->st_ctim.tv_nsec);
1947         else
1948                 printf(", ");
1949         printf("birthtime=");
1950         if (!resolv)
1951                 printf("%jd", (intmax_t)statp->st_birthtim.tv_sec);
1952         else {
1953                 tm = localtime(&statp->st_birthtim.tv_sec);
1954                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1955                 printf("\"%s\"", timestr);
1956         }
1957         if (statp->st_birthtim.tv_nsec != 0)
1958                 printf(".%09ld, ", statp->st_birthtim.tv_nsec);
1959         else
1960                 printf(", ");
1961         printf("size=%jd, blksize=%ju, blocks=%jd, flags=0x%x",
1962                 (uintmax_t)statp->st_size, (uintmax_t)statp->st_blksize,
1963                 (intmax_t)statp->st_blocks, statp->st_flags);
1964         printf(" }\n");
1965 }
1966
1967 void
1968 ktrstruct(char *buf, size_t buflen)
1969 {
1970         char *name, *data;
1971         size_t namelen, datalen;
1972         int i;
1973         cap_rights_t rights;
1974         struct itimerval it;
1975         struct stat sb;
1976         struct sockaddr_storage ss;
1977
1978         for (name = buf, namelen = 0;
1979              namelen < buflen && name[namelen] != '\0';
1980              ++namelen)
1981                 /* nothing */;
1982         if (namelen == buflen)
1983                 goto invalid;
1984         if (name[namelen] != '\0')
1985                 goto invalid;
1986         data = buf + namelen + 1;
1987         datalen = buflen - namelen - 1;
1988         if (datalen == 0)
1989                 goto invalid;
1990         /* sanity check */
1991         for (i = 0; i < (int)namelen; ++i)
1992                 if (!isalpha(name[i]))
1993                         goto invalid;
1994         if (strcmp(name, "caprights") == 0) {
1995                 if (datalen != sizeof(cap_rights_t))
1996                         goto invalid;
1997                 memcpy(&rights, data, datalen);
1998                 ktrcaprights(&rights);
1999         } else if (strcmp(name, "itimerval") == 0) {
2000                 if (datalen != sizeof(struct itimerval))
2001                         goto invalid;
2002                 memcpy(&it, data, datalen);
2003                 ktritimerval(&it);
2004         } else if (strcmp(name, "stat") == 0) {
2005                 if (datalen != sizeof(struct stat))
2006                         goto invalid;
2007                 memcpy(&sb, data, datalen);
2008                 ktrstat(&sb);
2009         } else if (strcmp(name, "sockaddr") == 0) {
2010                 if (datalen > sizeof(ss))
2011                         goto invalid;
2012                 memcpy(&ss, data, datalen);
2013                 if (datalen != ss.ss_len)
2014                         goto invalid;
2015                 ktrsockaddr((struct sockaddr *)&ss);
2016         } else {
2017                 printf("unknown structure\n");
2018         }
2019         return;
2020 invalid:
2021         printf("invalid record\n");
2022 }
2023
2024 void
2025 ktrcapfail(struct ktr_cap_fail *ktr)
2026 {
2027         switch (ktr->cap_type) {
2028         case CAPFAIL_NOTCAPABLE:
2029                 /* operation on fd with insufficient capabilities */
2030                 printf("operation requires ");
2031                 sysdecode_cap_rights(stdout, &ktr->cap_needed);
2032                 printf(", descriptor holds ");
2033                 sysdecode_cap_rights(stdout, &ktr->cap_held);
2034                 break;
2035         case CAPFAIL_INCREASE:
2036                 /* requested more capabilities than fd already has */
2037                 printf("attempt to increase capabilities from ");
2038                 sysdecode_cap_rights(stdout, &ktr->cap_held);
2039                 printf(" to ");
2040                 sysdecode_cap_rights(stdout, &ktr->cap_needed);
2041                 break;
2042         case CAPFAIL_SYSCALL:
2043                 /* called restricted syscall */
2044                 printf("disallowed system call");
2045                 break;
2046         case CAPFAIL_LOOKUP:
2047                 /* absolute or AT_FDCWD path, ".." path, etc. */
2048                 printf("restricted VFS lookup");
2049                 break;
2050         default:
2051                 printf("unknown capability failure: ");
2052                 sysdecode_cap_rights(stdout, &ktr->cap_needed);
2053                 printf(" ");
2054                 sysdecode_cap_rights(stdout, &ktr->cap_held);
2055                 break;
2056         }
2057         printf("\n");
2058 }
2059
2060 void
2061 ktrfault(struct ktr_fault *ktr)
2062 {
2063
2064         printf("0x%jx ", (uintmax_t)ktr->vaddr);
2065         print_mask_arg(sysdecode_vmprot, ktr->type);
2066         printf("\n");
2067 }
2068
2069 void
2070 ktrfaultend(struct ktr_faultend *ktr)
2071 {
2072         const char *str;
2073
2074         str = sysdecode_vmresult(ktr->result);
2075         if (str != NULL)
2076                 printf("%s", str);
2077         else
2078                 printf("<invalid=%d>", ktr->result);
2079         printf("\n");
2080 }
2081
2082 void
2083 ktrkevent(struct kevent *kev)
2084 {
2085
2086         printf("{ ident=");
2087         switch (kev->filter) {
2088         case EVFILT_READ:
2089         case EVFILT_WRITE:
2090         case EVFILT_VNODE:
2091         case EVFILT_PROC:
2092         case EVFILT_TIMER:
2093         case EVFILT_PROCDESC:
2094         case EVFILT_EMPTY:
2095                 printf("%ju", (uintmax_t)kev->ident);
2096                 break;
2097         case EVFILT_SIGNAL:
2098                 print_signal(kev->ident);
2099                 break;
2100         default:
2101                 printf("%p", (void *)kev->ident);
2102         }
2103         printf(", filter=");
2104         print_integer_arg(sysdecode_kevent_filter, kev->filter);
2105         printf(", flags=");
2106         print_mask_arg0(sysdecode_kevent_flags, kev->flags);
2107         printf(", fflags=");
2108         sysdecode_kevent_fflags(stdout, kev->filter, kev->fflags,
2109             decimal ? 10 : 16);
2110         printf(", data=%#jx, udata=%p }", (uintmax_t)kev->data, kev->udata);
2111 }
2112
2113 void
2114 ktrstructarray(struct ktr_struct_array *ksa, size_t buflen)
2115 {
2116         struct kevent kev;
2117         char *name, *data;
2118         size_t namelen, datalen;
2119         int i;
2120         bool first;
2121
2122         buflen -= sizeof(*ksa);
2123         for (name = (char *)(ksa + 1), namelen = 0;
2124              namelen < buflen && name[namelen] != '\0';
2125              ++namelen)
2126                 /* nothing */;
2127         if (namelen == buflen)
2128                 goto invalid;
2129         if (name[namelen] != '\0')
2130                 goto invalid;
2131         /* sanity check */
2132         for (i = 0; i < (int)namelen; ++i)
2133                 if (!isalnum(name[i]) && name[i] != '_')
2134                         goto invalid;
2135         data = name + namelen + 1;
2136         datalen = buflen - namelen - 1;
2137         printf("struct %s[] = { ", name);
2138         first = true;
2139         for (; datalen >= ksa->struct_size;
2140             data += ksa->struct_size, datalen -= ksa->struct_size) {
2141                 if (!first)
2142                         printf("\n             ");
2143                 else
2144                         first = false;
2145                 if (strcmp(name, "kevent") == 0) {
2146                         if (ksa->struct_size != sizeof(kev))
2147                                 goto bad_size;
2148                         memcpy(&kev, data, sizeof(kev));
2149                         ktrkevent(&kev);
2150                 } else if (strcmp(name, "kevent_freebsd11") == 0) {
2151                         struct kevent_freebsd11 kev11;
2152
2153                         if (ksa->struct_size != sizeof(kev11))
2154                                 goto bad_size;
2155                         memcpy(&kev11, data, sizeof(kev11));
2156                         memset(&kev, 0, sizeof(kev));
2157                         kev.ident = kev11.ident;
2158                         kev.filter = kev11.filter;
2159                         kev.flags = kev11.flags;
2160                         kev.fflags = kev11.fflags;
2161                         kev.data = kev11.data;
2162                         kev.udata = kev11.udata;
2163                         ktrkevent(&kev);
2164 #ifdef _WANT_KEVENT32
2165                 } else if (strcmp(name, "kevent32") == 0) {
2166                         struct kevent32 kev32;
2167
2168                         if (ksa->struct_size != sizeof(kev32))
2169                                 goto bad_size;
2170                         memcpy(&kev32, data, sizeof(kev32));
2171                         memset(&kev, 0, sizeof(kev));
2172                         kev.ident = kev32.ident;
2173                         kev.filter = kev32.filter;
2174                         kev.flags = kev32.flags;
2175                         kev.fflags = kev32.fflags;
2176 #if BYTE_ORDER == BIG_ENDIAN
2177                         kev.data = kev32.data2 | ((int64_t)kev32.data1 << 32);
2178 #else
2179                         kev.data = kev32.data1 | ((int64_t)kev32.data2 << 32);
2180 #endif
2181                         kev.udata = (void *)(uintptr_t)kev32.udata;
2182                         ktrkevent(&kev);
2183                 } else if (strcmp(name, "kevent32_freebsd11") == 0) {
2184                         struct kevent32_freebsd11 kev32;
2185
2186                         if (ksa->struct_size != sizeof(kev32))
2187                                 goto bad_size;
2188                         memcpy(&kev32, data, sizeof(kev32));
2189                         memset(&kev, 0, sizeof(kev));
2190                         kev.ident = kev32.ident;
2191                         kev.filter = kev32.filter;
2192                         kev.flags = kev32.flags;
2193                         kev.fflags = kev32.fflags;
2194                         kev.data = kev32.data;
2195                         kev.udata = (void *)(uintptr_t)kev32.udata;
2196                         ktrkevent(&kev);
2197 #endif
2198                 } else {
2199                         printf("<unknown structure> }\n");
2200                         return;
2201                 }
2202         }
2203         printf(" }\n");
2204         return;
2205 invalid:
2206         printf("invalid record\n");
2207         return;
2208 bad_size:
2209         printf("<bad size> }\n");
2210         return;
2211 }
2212
2213 void
2214 usage(void)
2215 {
2216         fprintf(stderr, "usage: kdump [-dEnlHRrSsTA] [-f trfile] "
2217             "[-m maxdata] [-p pid] [-t trstr]\n");
2218         exit(1);
2219 }