usr.bin/kdump/kdump.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-3-Clause
   3  *
   4  * Copyright (c) 1988, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #ifndef lint
  33 static const char copyright[] =
  34 "@(#) Copyright (c) 1988, 1993\n\
  35         The Regents of the University of California.  All rights reserved.\n";
  36 #endif /* not lint */
  37
  38 #ifndef lint
  39 #if 0
  40 static char sccsid[] = "@(#)kdump.c     8.1 (Berkeley) 6/6/93";
  41 #endif
  42 #endif /* not lint */
  43 #include <sys/cdefs.h>
  44 __FBSDID("$FreeBSD$");
  45
  46 #define _WANT_KERNEL_ERRNO
  47 #ifdef __LP64__
  48 #define _WANT_KEVENT32
  49 #endif
  50 #define _WANT_FREEBSD11_KEVENT
  51 #include <sys/param.h>
  52 #include <sys/capsicum.h>
  53 #include <sys/errno.h>
  54 #include <sys/time.h>
  55 #include <sys/uio.h>
  56 #include <sys/event.h>
  57 #include <sys/ktrace.h>
  58 #include <sys/ioctl.h>
  59 #include <sys/socket.h>
  60 #include <sys/stat.h>
  61 #include <sys/sysent.h>
  62 #include <sys/umtx.h>
  63 #include <sys/un.h>
  64 #include <sys/queue.h>
  65 #include <sys/wait.h>
  66 #ifdef WITH_CASPER
  67 #include <sys/nv.h>
  68 #endif
  69 #include <arpa/inet.h>
  70 #include <netinet/in.h>
  71 #include <ctype.h>
  72 #include <capsicum_helpers.h>
  73 #include <err.h>
  74 #include <grp.h>
  75 #include <inttypes.h>
  76 #include <locale.h>
  77 #include <netdb.h>
  78 #include <nl_types.h>
  79 #include <pwd.h>
  80 #include <stddef.h>
  81 #include <stdio.h>
  82 #include <stdlib.h>
  83 #include <string.h>
  84 #include <sysdecode.h>
  85 #include <time.h>
  86 #include <unistd.h>
  87 #include <vis.h>
  88 #include "ktrace.h"
  89
  90 #ifdef WITH_CASPER
  91 #include <libcasper.h>
  92
  93 #include <casper/cap_grp.h>
  94 #include <casper/cap_pwd.h>
  95 #endif
  96
  97 int fetchprocinfo(struct ktr_header *, u_int *);
  98 u_int findabi(struct ktr_header *);
  99 int fread_tail(void *, int, int);
 100 void dumpheader(struct ktr_header *, u_int);
 101 void ktrsyscall(struct ktr_syscall *, u_int);
 102 void ktrsysret(struct ktr_sysret *, u_int);
 103 void ktrnamei(char *, int);
 104 void hexdump(char *, int, int);
 105 void visdump(char *, int, int);
 106 void ktrgenio(struct ktr_genio *, int);
 107 void ktrpsig(struct ktr_psig *);
 108 void ktrcsw(struct ktr_csw *);
 109 void ktrcsw_old(struct ktr_csw_old *);
 110 void ktruser(int, void *);
 111 void ktrcaprights(cap_rights_t *);
 112 void ktritimerval(struct itimerval *it);
 113 void ktrsockaddr(struct sockaddr *);
 114 void ktrstat(struct stat *);
 115 void ktrstruct(char *, size_t);
 116 void ktrcapfail(struct ktr_cap_fail *);
 117 void ktrfault(struct ktr_fault *);
 118 void ktrfaultend(struct ktr_faultend *);
 119 void ktrkevent(struct kevent *);
 120 void ktrstructarray(struct ktr_struct_array *, size_t);
 121 void usage(void);
 122
 123 #define TIMESTAMP_NONE          0x0
 124 #define TIMESTAMP_ABSOLUTE      0x1
 125 #define TIMESTAMP_ELAPSED       0x2
 126 #define TIMESTAMP_RELATIVE      0x4
 127
 128 static int timestamp, decimal, fancy = 1, suppressdata, tail, threads, maxdata,
 129     resolv = 0, abiflag = 0, syscallno = 0;
 130 static const char *tracefile = DEF_TRACEFILE;
 131 static struct ktr_header ktr_header;
 132
 133 #define TIME_FORMAT     "%b %e %T %Y"
 134 #define eqs(s1, s2)     (strcmp((s1), (s2)) == 0)
 135
 136 #define print_number64(first,i,n,c) do {                                \
 137         uint64_t __v;                                                   \
 138                                                                         \
 139         if (quad_align && (((ptrdiff_t)((i) - (first))) & 1) == 1) {    \
 140                 (i)++;                                                  \
 141                 (n)--;                                                  \
 142         }                                                               \
 143         if (quad_slots == 2)                                            \
 144                 __v = (uint64_t)(uint32_t)(i)[0] |                      \
 145                     ((uint64_t)(uint32_t)(i)[1]) << 32;                 \
 146         else                                                            \
 147                 __v = (uint64_t)*(i);                                   \
 148         if (decimal)                                                    \
 149                 printf("%c%jd", (c), (intmax_t)__v);                    \
 150         else                                                            \
 151                 printf("%c%#jx", (c), (uintmax_t)__v);                  \
 152         (i) += quad_slots;                                              \
 153         (n) -= quad_slots;                                              \
 154         (c) = ',';                                                      \
 155 } while (0)
 156
 157 #define print_number(i,n,c) do {                                        \
 158         if (decimal)                                                    \
 159                 printf("%c%jd", c, (intmax_t)*i);                       \
 160         else                                                            \
 161                 printf("%c%#jx", c, (uintmax_t)(u_register_t)*i);       \
 162         i++;                                                            \
 163         n--;                                                            \
 164         c = ',';                                                        \
 165 } while (0)
 166
 167 struct proc_info
 168 {
 169         TAILQ_ENTRY(proc_info)  info;
 170         u_int                   sv_flags;
 171         pid_t                   pid;
 172 };
 173
 174 static TAILQ_HEAD(trace_procs, proc_info) trace_procs;
 175
 176 #ifdef WITH_CASPER
 177 static cap_channel_t *cappwd, *capgrp;
 178
 179 static int
 180 cappwdgrp_setup(cap_channel_t **cappwdp, cap_channel_t **capgrpp)
 181 {
 182         cap_channel_t *capcas, *cappwdloc, *capgrploc;
 183         const char *cmds[1], *fields[1];
 184
 185         capcas = cap_init();
 186         if (capcas == NULL) {
 187                 err(1, "unable to create casper process");
 188                 exit(1);
 189         }
 190         cappwdloc = cap_service_open(capcas, "system.pwd");
 191         capgrploc = cap_service_open(capcas, "system.grp");
 192         /* Casper capability no longer needed. */
 193         cap_close(capcas);
 194         if (cappwdloc == NULL || capgrploc == NULL) {
 195                 if (cappwdloc == NULL)
 196                         warn("unable to open system.pwd service");
 197                 if (capgrploc == NULL)
 198                         warn("unable to open system.grp service");
 199                 exit(1);
 200         }
 201         /* Limit system.pwd to only getpwuid() function and pw_name field. */
 202         cmds[0] = "getpwuid";
 203         if (cap_pwd_limit_cmds(cappwdloc, cmds, 1) < 0)
 204                 err(1, "unable to limit system.pwd service");
 205         fields[0] = "pw_name";
 206         if (cap_pwd_limit_fields(cappwdloc, fields, 1) < 0)
 207                 err(1, "unable to limit system.pwd service");
 208         /* Limit system.grp to only getgrgid() function and gr_name field. */
 209         cmds[0] = "getgrgid";
 210         if (cap_grp_limit_cmds(capgrploc, cmds, 1) < 0)
 211                 err(1, "unable to limit system.grp service");
 212         fields[0] = "gr_name";
 213         if (cap_grp_limit_fields(capgrploc, fields, 1) < 0)
 214                 err(1, "unable to limit system.grp service");
 215
 216         *cappwdp = cappwdloc;
 217         *capgrpp = capgrploc;
 218         return (0);
 219 }
 220 #endif  /* WITH_CASPER */
 221
 222 static void
 223 print_integer_arg(const char *(*decoder)(int), int value)
 224 {
 225         const char *str;
 226
 227         str = decoder(value);
 228         if (str != NULL)
 229                 printf("%s", str);
 230         else {
 231                 if (decimal)
 232                         printf("<invalid=%d>", value);
 233                 else
 234                         printf("<invalid=%#x>", value);
 235         }
 236 }
 237
 238 /* Like print_integer_arg but unknown values are treated as valid. */
 239 static void
 240 print_integer_arg_valid(const char *(*decoder)(int), int value)
 241 {
 242         const char *str;
 243
 244         str = decoder(value);
 245         if (str != NULL)
 246                 printf("%s", str);
 247         else {
 248                 if (decimal)
 249                         printf("%d", value);
 250                 else
 251                         printf("%#x", value);
 252         }
 253 }
 254
 255 static void
 256 print_mask_arg(bool (*decoder)(FILE *, int, int *), int value)
 257 {
 258         bool invalid;
 259         int rem;
 260
 261         printf("%#x<", value);
 262         invalid = !decoder(stdout, value, &rem);
 263         printf(">");
 264         if (invalid)
 265                 printf("<invalid>%u", rem);
 266 }
 267
 268 static void
 269 print_mask_arg0(bool (*decoder)(FILE *, int, int *), int value)
 270 {
 271         bool invalid;
 272         int rem;
 273
 274         if (value == 0) {
 275                 printf("0");
 276                 return;
 277         }
 278         printf("%#x<", value);
 279         invalid = !decoder(stdout, value, &rem);
 280         printf(">");
 281         if (invalid)
 282                 printf("<invalid>%u", rem);
 283 }
 284
 285 static void
 286 decode_fileflags(fflags_t value)
 287 {
 288         bool invalid;
 289         fflags_t rem;
 290
 291         if (value == 0) {
 292                 printf("0");
 293                 return;
 294         }
 295         printf("%#x<", value);
 296         invalid = !sysdecode_fileflags(stdout, value, &rem);
 297         printf(">");
 298         if (invalid)
 299                 printf("<invalid>%u", rem);
 300 }
 301
 302 static void
 303 decode_filemode(int value)
 304 {
 305         bool invalid;
 306         int rem;
 307
 308         if (value == 0) {
 309                 printf("0");
 310                 return;
 311         }
 312         printf("%#o<", value);
 313         invalid = !sysdecode_filemode(stdout, value, &rem);
 314         printf(">");
 315         if (invalid)
 316                 printf("<invalid>%u", rem);
 317 }
 318
 319 static void
 320 print_mask_arg32(bool (*decoder)(FILE *, uint32_t, uint32_t *), uint32_t value)
 321 {
 322         bool invalid;
 323         uint32_t rem;
 324
 325         printf("%#x<", value);
 326         invalid = !decoder(stdout, value, &rem);
 327         printf(">");
 328         if (invalid)
 329                 printf("<invalid>%u", rem);
 330 }
 331
 332 static void
 333 print_mask_argul(bool (*decoder)(FILE *, u_long, u_long *), u_long value)
 334 {
 335         bool invalid;
 336         u_long rem;
 337
 338         if (value == 0) {
 339                 printf("0");
 340                 return;
 341         }
 342         printf("%#lx<", value);
 343         invalid = !decoder(stdout, value, &rem);
 344         printf(">");
 345         if (invalid)
 346                 printf("<invalid>%lu", rem);
 347 }
 348
 349 int
 350 main(int argc, char *argv[])
 351 {
 352         int ch, ktrlen, size;
 353         void *m;
 354         int trpoints = ALL_POINTS;
 355         int drop_logged;
 356         pid_t pid = 0;
 357         u_int sv_flags;
 358
 359         setlocale(LC_CTYPE, "");
 360
 361         timestamp = TIMESTAMP_NONE;
 362
 363         while ((ch = getopt(argc,argv,"f:dElm:np:AHRrSsTt:")) != -1)
 364                 switch (ch) {
 365                 case 'A':
 366                         abiflag = 1;
 367                         break;
 368                 case 'f':
 369                         tracefile = optarg;
 370                         break;
 371                 case 'd':
 372                         decimal = 1;
 373                         break;
 374                 case 'l':
 375                         tail = 1;
 376                         break;
 377                 case 'm':
 378                         maxdata = atoi(optarg);
 379                         break;
 380                 case 'n':
 381                         fancy = 0;
 382                         break;
 383                 case 'p':
 384                         pid = atoi(optarg);
 385                         break;
 386                 case 'r':
 387                         resolv = 1;
 388                         break;
 389                 case 'S':
 390                         syscallno = 1;
 391                         break;
 392                 case 's':
 393                         suppressdata = 1;
 394                         break;
 395                 case 'E':
 396                         timestamp |= TIMESTAMP_ELAPSED;
 397                         break;
 398                 case 'H':
 399                         threads = 1;
 400                         break;
 401                 case 'R':
 402                         timestamp |= TIMESTAMP_RELATIVE;
 403                         break;
 404                 case 'T':
 405                         timestamp |= TIMESTAMP_ABSOLUTE;
 406                         break;
 407                 case 't':
 408                         trpoints = getpoints(optarg);
 409                         if (trpoints < 0)
 410                                 errx(1, "unknown trace point in %s", optarg);
 411                         break;
 412                 default:
 413                         usage();
 414                 }
 415
 416         if (argc > optind)
 417                 usage();
 418
 419         m = malloc(size = 1025);
 420         if (m == NULL)
 421                 errx(1, "%s", strerror(ENOMEM));
 422         if (strcmp(tracefile, "-") != 0)
 423                 if (!freopen(tracefile, "r", stdin))
 424                         err(1, "%s", tracefile);
 425
 426         caph_cache_catpages();
 427         caph_cache_tzdata();
 428
 429 #ifdef WITH_CASPER
 430         if (resolv != 0) {
 431                 if (cappwdgrp_setup(&cappwd, &capgrp) < 0) {
 432                         cappwd = NULL;
 433                         capgrp = NULL;
 434                 }
 435         }
 436         if (resolv == 0 || (cappwd != NULL && capgrp != NULL)) {
 437                 if (caph_enter() < 0)
 438                         err(1, "unable to enter capability mode");
 439         }
 440 #else
 441         if (resolv == 0) {
 442                 if (caph_enter() < 0)
 443                         err(1, "unable to enter capability mode");
 444         }
 445 #endif
 446         if (caph_limit_stdio() == -1)
 447                 err(1, "unable to limit stdio");
 448
 449         TAILQ_INIT(&trace_procs);
 450         drop_logged = 0;
 451         while (fread_tail(&ktr_header, sizeof(struct ktr_header), 1)) {
 452                 if (ktr_header.ktr_type & KTR_DROP) {
 453                         ktr_header.ktr_type &= ~KTR_DROP;
 454                         if (!drop_logged && threads) {
 455                                 printf(
 456                                     "%6jd %6jd %-8.*s Events dropped.\n",
 457                                     (intmax_t)ktr_header.ktr_pid,
 458                                     ktr_header.ktr_tid > 0 ?
 459                                     (intmax_t)ktr_header.ktr_tid : 0,
 460                                     MAXCOMLEN, ktr_header.ktr_comm);
 461                                 drop_logged = 1;
 462                         } else if (!drop_logged) {
 463                                 printf("%6jd %-8.*s Events dropped.\n",
 464                                     (intmax_t)ktr_header.ktr_pid, MAXCOMLEN,
 465                                     ktr_header.ktr_comm);
 466                                 drop_logged = 1;
 467                         }
 468                 }
 469                 if ((ktrlen = ktr_header.ktr_len) < 0)
 470                         errx(1, "bogus length 0x%x", ktrlen);
 471                 if (ktrlen > size) {
 472                         m = realloc(m, ktrlen+1);
 473                         if (m == NULL)
 474                                 errx(1, "%s", strerror(ENOMEM));
 475                         size = ktrlen;
 476                 }
 477                 if (ktrlen && fread_tail(m, ktrlen, 1) == 0)
 478                         errx(1, "data too short");
 479                 if (fetchprocinfo(&ktr_header, (u_int *)m) != 0)
 480                         continue;
 481                 if (pid && ktr_header.ktr_pid != pid &&
 482                     ktr_header.ktr_tid != pid)
 483                         continue;
 484                 if ((trpoints & (1<<ktr_header.ktr_type)) == 0)
 485                         continue;
 486                 sv_flags = findabi(&ktr_header);
 487                 dumpheader(&ktr_header, sv_flags);
 488                 drop_logged = 0;
 489                 switch (ktr_header.ktr_type) {
 490                 case KTR_SYSCALL:
 491                         ktrsyscall((struct ktr_syscall *)m, sv_flags);
 492                         break;
 493                 case KTR_SYSRET:
 494                         ktrsysret((struct ktr_sysret *)m, sv_flags);
 495                         break;
 496                 case KTR_NAMEI:
 497                 case KTR_SYSCTL:
 498                         ktrnamei(m, ktrlen);
 499                         break;
 500                 case KTR_GENIO:
 501                         ktrgenio((struct ktr_genio *)m, ktrlen);
 502                         break;
 503                 case KTR_PSIG:
 504                         ktrpsig((struct ktr_psig *)m);
 505                         break;
 506                 case KTR_CSW:
 507                         if (ktrlen == sizeof(struct ktr_csw_old))
 508                                 ktrcsw_old((struct ktr_csw_old *)m);
 509                         else
 510                                 ktrcsw((struct ktr_csw *)m);
 511                         break;
 512                 case KTR_USER:
 513                         ktruser(ktrlen, m);
 514                         break;
 515                 case KTR_STRUCT:
 516                         ktrstruct(m, ktrlen);
 517                         break;
 518                 case KTR_CAPFAIL:
 519                         ktrcapfail((struct ktr_cap_fail *)m);
 520                         break;
 521                 case KTR_FAULT:
 522                         ktrfault((struct ktr_fault *)m);
 523                         break;
 524                 case KTR_FAULTEND:
 525                         ktrfaultend((struct ktr_faultend *)m);
 526                         break;
 527                 case KTR_STRUCT_ARRAY:
 528                         ktrstructarray((struct ktr_struct_array *)m, ktrlen);
 529                         break;
 530                 default:
 531                         printf("\n");
 532                         break;
 533                 }
 534                 if (tail)
 535                         fflush(stdout);
 536         }
 537         return 0;
 538 }
 539
 540 int
 541 fread_tail(void *buf, int size, int num)
 542 {
 543         int i;
 544
 545         while ((i = fread(buf, size, num, stdin)) == 0 && tail) {
 546                 sleep(1);
 547                 clearerr(stdin);
 548         }
 549         return (i);
 550 }
 551
 552 int
 553 fetchprocinfo(struct ktr_header *kth, u_int *flags)
 554 {
 555         struct proc_info *pi;
 556
 557         switch (kth->ktr_type) {
 558         case KTR_PROCCTOR:
 559                 TAILQ_FOREACH(pi, &trace_procs, info) {
 560                         if (pi->pid == kth->ktr_pid) {
 561                                 TAILQ_REMOVE(&trace_procs, pi, info);
 562                                 break;
 563                         }
 564                 }
 565                 pi = malloc(sizeof(struct proc_info));
 566                 if (pi == NULL)
 567                         errx(1, "%s", strerror(ENOMEM));
 568                 pi->sv_flags = *flags;
 569                 pi->pid = kth->ktr_pid;
 570                 TAILQ_INSERT_TAIL(&trace_procs, pi, info);
 571                 return (1);
 572
 573         case KTR_PROCDTOR:
 574                 TAILQ_FOREACH(pi, &trace_procs, info) {
 575                         if (pi->pid == kth->ktr_pid) {
 576                                 TAILQ_REMOVE(&trace_procs, pi, info);
 577                                 free(pi);
 578                                 break;
 579                         }
 580                 }
 581                 return (1);
 582         }
 583
 584         return (0);
 585 }
 586
 587 u_int
 588 findabi(struct ktr_header *kth)
 589 {
 590         struct proc_info *pi;
 591
 592         TAILQ_FOREACH(pi, &trace_procs, info) {
 593                 if (pi->pid == kth->ktr_pid) {
 594                         return (pi->sv_flags);
 595                 }
 596         }
 597         return (0);
 598 }
 599
 600 void
 601 dumpheader(struct ktr_header *kth, u_int sv_flags)
 602 {
 603         static char unknown[64];
 604         static struct timeval prevtime, prevtime_e;
 605         struct timeval temp;
 606         const char *abi;
 607         const char *arch;
 608         const char *type;
 609         const char *sign;
 610
 611         switch (kth->ktr_type) {
 612         case KTR_SYSCALL:
 613                 type = "CALL";
 614                 break;
 615         case KTR_SYSRET:
 616                 type = "RET ";
 617                 break;
 618         case KTR_NAMEI:
 619                 type = "NAMI";
 620                 break;
 621         case KTR_GENIO:
 622                 type = "GIO ";
 623                 break;
 624         case KTR_PSIG:
 625                 type = "PSIG";
 626                 break;
 627         case KTR_CSW:
 628                 type = "CSW ";
 629                 break;
 630         case KTR_USER:
 631                 type = "USER";
 632                 break;
 633         case KTR_STRUCT:
 634         case KTR_STRUCT_ARRAY:
 635                 type = "STRU";
 636                 break;
 637         case KTR_SYSCTL:
 638                 type = "SCTL";
 639                 break;
 640         case KTR_CAPFAIL:
 641                 type = "CAP ";
 642                 break;
 643         case KTR_FAULT:
 644                 type = "PFLT";
 645                 break;
 646         case KTR_FAULTEND:
 647                 type = "PRET";
 648                 break;
 649         default:
 650                 sprintf(unknown, "UNKNOWN(%d)", kth->ktr_type);
 651                 type = unknown;
 652         }
 653
 654         /*
 655          * The ktr_tid field was previously the ktr_buffer field, which held
 656          * the kernel pointer value for the buffer associated with data
 657          * following the record header.  It now holds a threadid, but only
 658          * for trace files after the change.  Older trace files still contain
 659          * kernel pointers.  Detect this and suppress the results by printing
 660          * negative tid's as 0.
 661          */
 662         if (threads)
 663                 printf("%6jd %6jd %-8.*s ", (intmax_t)kth->ktr_pid,
 664                     kth->ktr_tid > 0 ? (intmax_t)kth->ktr_tid : 0,
 665                     MAXCOMLEN, kth->ktr_comm);
 666         else
 667                 printf("%6jd %-8.*s ", (intmax_t)kth->ktr_pid, MAXCOMLEN,
 668                     kth->ktr_comm);
 669         if (timestamp) {
 670                 if (timestamp & TIMESTAMP_ABSOLUTE) {
 671                         printf("%jd.%06ld ", (intmax_t)kth->ktr_time.tv_sec,
 672                             kth->ktr_time.tv_usec);
 673                 }
 674                 if (timestamp & TIMESTAMP_ELAPSED) {
 675                         if (prevtime_e.tv_sec == 0)
 676                                 prevtime_e = kth->ktr_time;
 677                         timersub(&kth->ktr_time, &prevtime_e, &temp);
 678                         printf("%jd.%06ld ", (intmax_t)temp.tv_sec,
 679                             temp.tv_usec);
 680                 }
 681                 if (timestamp & TIMESTAMP_RELATIVE) {
 682                         if (prevtime.tv_sec == 0)
 683                                 prevtime = kth->ktr_time;
 684                         if (timercmp(&kth->ktr_time, &prevtime, <)) {
 685                                 timersub(&prevtime, &kth->ktr_time, &temp);
 686                                 sign = "-";
 687                         } else {
 688                                 timersub(&kth->ktr_time, &prevtime, &temp);
 689                                 sign = "";
 690                         }
 691                         prevtime = kth->ktr_time;
 692                         printf("%s%jd.%06ld ", sign, (intmax_t)temp.tv_sec,
 693                             temp.tv_usec);
 694                 }
 695         }
 696         printf("%s  ", type);
 697         if (abiflag != 0) {
 698                 switch (sv_flags & SV_ABI_MASK) {
 699                 case SV_ABI_LINUX:
 700                         abi = "L";
 701                         break;
 702                 case SV_ABI_FREEBSD:
 703                         abi = "F";
 704                         break;
 705                 case SV_ABI_CLOUDABI:
 706                         abi = "C";
 707                         break;
 708                 default:
 709                         abi = "U";
 710                         break;
 711                 }
 712
 713                 if ((sv_flags & SV_LP64) != 0)
 714                         arch = "64";
 715                 else if ((sv_flags & SV_ILP32) != 0)
 716                         arch = "32";
 717                 else
 718                         arch = "00";
 719
 720                 printf("%s%s  ", abi, arch);
 721         }
 722 }
 723
 724 #include <sys/syscall.h>
 725
 726 static void
 727 ioctlname(unsigned long val)
 728 {
 729         const char *str;
 730
 731         str = sysdecode_ioctlname(val);
 732         if (str != NULL)
 733                 printf("%s", str);
 734         else if (decimal)
 735                 printf("%lu", val);
 736         else
 737                 printf("%#lx", val);
 738 }
 739
 740 static enum sysdecode_abi
 741 syscallabi(u_int sv_flags)
 742 {
 743
 744         if (sv_flags == 0)
 745                 return (SYSDECODE_ABI_FREEBSD);
 746         switch (sv_flags & SV_ABI_MASK) {
 747         case SV_ABI_FREEBSD:
 748                 return (SYSDECODE_ABI_FREEBSD);
 749         case SV_ABI_LINUX:
 750 #ifdef __LP64__
 751                 if (sv_flags & SV_ILP32)
 752                         return (SYSDECODE_ABI_LINUX32);
 753 #endif
 754                 return (SYSDECODE_ABI_LINUX);
 755         case SV_ABI_CLOUDABI:
 756                 return (SYSDECODE_ABI_CLOUDABI64);
 757         default:
 758                 return (SYSDECODE_ABI_UNKNOWN);
 759         }
 760 }
 761
 762 static void
 763 syscallname(u_int code, u_int sv_flags)
 764 {
 765         const char *name;
 766
 767         name = sysdecode_syscallname(syscallabi(sv_flags), code);
 768         if (name == NULL)
 769                 printf("[%d]", code);
 770         else {
 771                 printf("%s", name);
 772                 if (syscallno)
 773                         printf("[%d]", code);
 774         }
 775 }
 776
 777 static void
 778 print_signal(int signo)
 779 {
 780         const char *signame;
 781
 782         signame = sysdecode_signal(signo);
 783         if (signame != NULL)
 784                 printf("%s", signame);
 785         else
 786                 printf("SIG %d", signo);
 787 }
 788
 789 void
 790 ktrsyscall(struct ktr_syscall *ktr, u_int sv_flags)
 791 {
 792         int narg = ktr->ktr_narg;
 793         register_t *ip, *first;
 794         intmax_t arg;
 795         int quad_align, quad_slots;
 796
 797         syscallname(ktr->ktr_code, sv_flags);
 798         ip = first = &ktr->ktr_args[0];
 799         if (narg) {
 800                 char c = '(';
 801                 if (fancy &&
 802                     (sv_flags == 0 ||
 803                     (sv_flags & SV_ABI_MASK) == SV_ABI_FREEBSD)) {
 804                         quad_align = 0;
 805                         if (sv_flags & SV_ILP32) {
 806 #ifdef __powerpc__
 807                                 quad_align = 1;
 808 #endif
 809                                 quad_slots = 2;
 810                         } else
 811                                 quad_slots = 1;
 812                         switch (ktr->ktr_code) {
 813                         case SYS_bindat:
 814                         case SYS_chflagsat:
 815                         case SYS_connectat:
 816                         case SYS_faccessat:
 817                         case SYS_fchmodat:
 818                         case SYS_fchownat:
 819                         case SYS_fstatat:
 820                         case SYS_futimesat:
 821                         case SYS_linkat:
 822                         case SYS_mkdirat:
 823                         case SYS_mkfifoat:
 824                         case SYS_mknodat:
 825                         case SYS_openat:
 826                         case SYS_readlinkat:
 827                         case SYS_renameat:
 828                         case SYS_unlinkat:
 829                         case SYS_utimensat:
 830                                 putchar('(');
 831                                 print_integer_arg_valid(sysdecode_atfd, *ip);
 832                                 c = ',';
 833                                 ip++;
 834                                 narg--;
 835                                 break;
 836                         }
 837                         switch (ktr->ktr_code) {
 838                         case SYS_ioctl: {
 839                                 print_number(ip, narg, c);
 840                                 putchar(c);
 841                                 ioctlname(*ip);
 842                                 c = ',';
 843                                 ip++;
 844                                 narg--;
 845                                 break;
 846                         }
 847                         case SYS_ptrace:
 848                                 putchar('(');
 849                                 print_integer_arg(sysdecode_ptrace_request, *ip);
 850                                 c = ',';
 851                                 ip++;
 852                                 narg--;
 853                                 break;
 854                         case SYS_access:
 855                         case SYS_eaccess:
 856                         case SYS_faccessat:
 857                                 print_number(ip, narg, c);
 858                                 putchar(',');
 859                                 print_mask_arg(sysdecode_access_mode, *ip);
 860                                 ip++;
 861                                 narg--;
 862                                 break;
 863                         case SYS_open:
 864                         case SYS_openat:
 865                                 print_number(ip, narg, c);
 866                                 putchar(',');
 867                                 print_mask_arg(sysdecode_open_flags, ip[0]);
 868                                 if ((ip[0] & O_CREAT) == O_CREAT) {
 869                                         putchar(',');
 870                                         decode_filemode(ip[1]);
 871                                 }
 872                                 ip += 2;
 873                                 narg -= 2;
 874                                 break;
 875                         case SYS_wait4:
 876                                 print_number(ip, narg, c);
 877                                 print_number(ip, narg, c);
 878                                 putchar(',');
 879                                 print_mask_arg0(sysdecode_wait4_options, *ip);
 880                                 ip++;
 881                                 narg--;
 882                                 break;
 883                         case SYS_wait6:
 884                                 putchar('(');
 885                                 print_integer_arg(sysdecode_idtype, *ip);
 886                                 c = ',';
 887                                 ip++;
 888                                 narg--;
 889                                 print_number64(first, ip, narg, c);
 890                                 print_number(ip, narg, c);
 891                                 putchar(',');
 892                                 print_mask_arg(sysdecode_wait6_options, *ip);
 893                                 ip++;
 894                                 narg--;
 895                                 break;
 896                         case SYS_chmod:
 897                         case SYS_fchmod:
 898                         case SYS_lchmod:
 899                         case SYS_fchmodat:
 900                                 print_number(ip, narg, c);
 901                                 putchar(',');
 902                                 decode_filemode(*ip);
 903                                 ip++;
 904                                 narg--;
 905                                 break;
 906                         case SYS_mknodat:
 907                                 print_number(ip, narg, c);
 908                                 putchar(',');
 909                                 decode_filemode(*ip);
 910                                 ip++;
 911                                 narg--;
 912                                 break;
 913                         case SYS_getfsstat:
 914                                 print_number(ip, narg, c);
 915                                 print_number(ip, narg, c);
 916                                 putchar(',');
 917                                 print_integer_arg(sysdecode_getfsstat_mode, *ip);
 918                                 ip++;
 919                                 narg--;
 920                                 break;
 921                         case SYS_mount:
 922                                 print_number(ip, narg, c);
 923                                 print_number(ip, narg, c);
 924                                 putchar(',');
 925                                 print_mask_arg(sysdecode_mount_flags, *ip);
 926                                 ip++;
 927                                 narg--;
 928                                 break;
 929                         case SYS_unmount:
 930                                 print_number(ip, narg, c);
 931                                 putchar(',');
 932                                 print_mask_arg(sysdecode_mount_flags, *ip);
 933                                 ip++;
 934                                 narg--;
 935                                 break;
 936                         case SYS_recvmsg:
 937                         case SYS_sendmsg:
 938                                 print_number(ip, narg, c);
 939                                 print_number(ip, narg, c);
 940                                 putchar(',');
 941                                 print_mask_arg0(sysdecode_msg_flags, *ip);
 942                                 ip++;
 943                                 narg--;
 944                                 break;
 945                         case SYS_recvfrom:
 946                         case SYS_sendto:
 947                                 print_number(ip, narg, c);
 948                                 print_number(ip, narg, c);
 949                                 print_number(ip, narg, c);
 950                                 putchar(',');
 951                                 print_mask_arg0(sysdecode_msg_flags, *ip);
 952                                 ip++;
 953                                 narg--;
 954                                 break;
 955                         case SYS_chflags:
 956                         case SYS_chflagsat:
 957                         case SYS_fchflags:
 958                         case SYS_lchflags:
 959                                 print_number(ip, narg, c);
 960                                 putchar(',');
 961                                 decode_fileflags(*ip);
 962                                 ip++;
 963                                 narg--;
 964                                 break;
 965                         case SYS_kill:
 966                                 print_number(ip, narg, c);
 967                                 putchar(',');
 968                                 print_signal(*ip);
 969                                 ip++;
 970                                 narg--;
 971                                 break;
 972                         case SYS_reboot:
 973                                 putchar('(');
 974                                 print_mask_arg(sysdecode_reboot_howto, *ip);
 975                                 ip++;
 976                                 narg--;
 977                                 break;
 978                         case SYS_umask:
 979                                 putchar('(');
 980                                 decode_filemode(*ip);
 981                                 ip++;
 982                                 narg--;
 983                                 break;
 984                         case SYS_msync:
 985                                 print_number(ip, narg, c);
 986                                 print_number(ip, narg, c);
 987                                 putchar(',');
 988                                 print_mask_arg(sysdecode_msync_flags, *ip);
 989                                 ip++;
 990                                 narg--;
 991                                 break;
 992 #ifdef SYS_freebsd6_mmap
 993                         case SYS_freebsd6_mmap:
 994                                 print_number(ip, narg, c);
 995                                 print_number(ip, narg, c);
 996                                 putchar(',');
 997                                 print_mask_arg(sysdecode_mmap_prot, *ip);
 998                                 putchar(',');
 999                                 ip++;
1000                                 narg--;
1001                                 print_mask_arg(sysdecode_mmap_flags, *ip);
1002                                 ip++;
1003                                 narg--;
1004                                 break;
1005 #endif
1006                         case SYS_mmap:
1007                                 print_number(ip, narg, c);
1008                                 print_number(ip, narg, c);
1009                                 putchar(',');
1010                                 print_mask_arg(sysdecode_mmap_prot, *ip);
1011                                 putchar(',');
1012                                 ip++;
1013                                 narg--;
1014                                 print_mask_arg(sysdecode_mmap_flags, *ip);
1015                                 ip++;
1016                                 narg--;
1017                                 break;
1018                         case SYS_mprotect:
1019                                 print_number(ip, narg, c);
1020                                 print_number(ip, narg, c);
1021                                 putchar(',');
1022                                 print_mask_arg(sysdecode_mmap_prot, *ip);
1023                                 ip++;
1024                                 narg--;
1025                                 break;
1026                         case SYS_madvise:
1027                                 print_number(ip, narg, c);
1028                                 print_number(ip, narg, c);
1029                                 putchar(',');
1030                                 print_integer_arg(sysdecode_madvice, *ip);
1031                                 ip++;
1032                                 narg--;
1033                                 break;
1034                         case SYS_pathconf:
1035                         case SYS_lpathconf:
1036                         case SYS_fpathconf:
1037                                 print_number(ip, narg, c);
1038                                 putchar(',');
1039                                 print_integer_arg(sysdecode_pathconf_name, *ip);
1040                                 ip++;
1041                                 narg--;
1042                                 break;
1043                         case SYS_getpriority:
1044                         case SYS_setpriority:
1045                                 putchar('(');
1046                                 print_integer_arg(sysdecode_prio_which, *ip);
1047                                 c = ',';
1048                                 ip++;
1049                                 narg--;
1050                                 break;
1051                         case SYS_fcntl:
1052                                 print_number(ip, narg, c);
1053                                 putchar(',');
1054                                 print_integer_arg(sysdecode_fcntl_cmd, ip[0]);
1055                                 if (sysdecode_fcntl_arg_p(ip[0])) {
1056                                         putchar(',');
1057                                         if (ip[0] == F_SETFL)
1058                                                 print_mask_arg(
1059                                                     sysdecode_fcntl_fileflags,
1060                                                         ip[1]);
1061                                         else
1062                                                 sysdecode_fcntl_arg(stdout,
1063                                                     ip[0], ip[1],
1064                                                     decimal ? 10 : 16);
1065                                 }
1066                                 ip += 2;
1067                                 narg -= 2;
1068                                 break;
1069                         case SYS_socket: {
1070                                 int sockdomain;
1071                                 putchar('(');
1072                                 sockdomain = *ip;
1073                                 print_integer_arg(sysdecode_socketdomain,
1074                                     sockdomain);
1075                                 ip++;
1076                                 narg--;
1077                                 putchar(',');
1078                                 print_mask_arg(sysdecode_socket_type, *ip);
1079                                 ip++;
1080                                 narg--;
1081                                 if (sockdomain == PF_INET ||
1082                                     sockdomain == PF_INET6) {
1083                                         putchar(',');
1084                                         print_integer_arg(sysdecode_ipproto,
1085                                             *ip);
1086                                         ip++;
1087                                         narg--;
1088                                 }
1089                                 c = ',';
1090                                 break;
1091                         }
1092                         case SYS_setsockopt:
1093                         case SYS_getsockopt: {
1094                                 const char *str;
1095
1096                                 print_number(ip, narg, c);
1097                                 putchar(',');
1098                                 print_integer_arg_valid(sysdecode_sockopt_level,
1099                                     *ip);
1100                                 str = sysdecode_sockopt_name(ip[0], ip[1]);
1101                                 if (str != NULL) {
1102                                         printf(",%s", str);
1103                                         ip++;
1104                                         narg--;
1105                                 }
1106                                 ip++;
1107                                 narg--;
1108                                 break;
1109                         }
1110 #ifdef SYS_freebsd6_lseek
1111                         case SYS_freebsd6_lseek:
1112                                 print_number(ip, narg, c);
1113                                 /* Hidden 'pad' argument, not in lseek(2) */
1114                                 print_number(ip, narg, c);
1115                                 print_number64(first, ip, narg, c);
1116                                 putchar(',');
1117                                 print_integer_arg(sysdecode_whence, *ip);
1118                                 ip++;
1119                                 narg--;
1120                                 break;
1121 #endif
1122                         case SYS_lseek:
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                         case SYS_flock:
1131                                 print_number(ip, narg, c);
1132                                 putchar(',');
1133                                 print_mask_arg(sysdecode_flock_operation, *ip);
1134                                 ip++;
1135                                 narg--;
1136                                 break;
1137                         case SYS_mkfifo:
1138                         case SYS_mkfifoat:
1139                         case SYS_mkdir:
1140                         case SYS_mkdirat:
1141                                 print_number(ip, narg, c);
1142                                 putchar(',');
1143                                 decode_filemode(*ip);
1144                                 ip++;
1145                                 narg--;
1146                                 break;
1147                         case SYS_shutdown:
1148                                 print_number(ip, narg, c);
1149                                 putchar(',');
1150                                 print_integer_arg(sysdecode_shutdown_how, *ip);
1151                                 ip++;
1152                                 narg--;
1153                                 break;
1154                         case SYS_socketpair:
1155                                 putchar('(');
1156                                 print_integer_arg(sysdecode_socketdomain, *ip);
1157                                 ip++;
1158                                 narg--;
1159                                 putchar(',');
1160                                 print_mask_arg(sysdecode_socket_type, *ip);
1161                                 ip++;
1162                                 narg--;
1163                                 c = ',';
1164                                 break;
1165                         case SYS_getrlimit:
1166                         case SYS_setrlimit:
1167                                 putchar('(');
1168                                 print_integer_arg(sysdecode_rlimit, *ip);
1169                                 ip++;
1170                                 narg--;
1171                                 c = ',';
1172                                 break;
1173                         case SYS_getrusage:
1174                                 putchar('(');
1175                                 print_integer_arg(sysdecode_getrusage_who, *ip);
1176                                 ip++;
1177                                 narg--;
1178                                 c = ',';
1179                                 break;
1180                         case SYS_quotactl:
1181                                 print_number(ip, narg, c);
1182                                 putchar(',');
1183                                 if (!sysdecode_quotactl_cmd(stdout, *ip)) {
1184                                         if (decimal)
1185                                                 printf("<invalid=%d>", (int)*ip);
1186                                         else
1187                                                 printf("<invalid=%#x>",
1188                                                     (int)*ip);
1189                                 }
1190                                 ip++;
1191                                 narg--;
1192                                 c = ',';
1193                                 break;
1194                         case SYS_nfssvc:
1195                                 putchar('(');
1196                                 print_integer_arg(sysdecode_nfssvc_flags, *ip);
1197                                 ip++;
1198                                 narg--;
1199                                 c = ',';
1200                                 break;
1201                         case SYS_rtprio:
1202                         case SYS_rtprio_thread:
1203                                 putchar('(');
1204                                 print_integer_arg(sysdecode_rtprio_function,
1205                                     *ip);
1206                                 ip++;
1207                                 narg--;
1208                                 c = ',';
1209                                 break;
1210                         case SYS___semctl:
1211                                 print_number(ip, narg, c);
1212                                 print_number(ip, narg, c);
1213                                 putchar(',');
1214                                 print_integer_arg(sysdecode_semctl_cmd, *ip);
1215                                 ip++;
1216                                 narg--;
1217                                 break;
1218                         case SYS_semget:
1219                                 print_number(ip, narg, c);
1220                                 print_number(ip, narg, c);
1221                                 putchar(',');
1222                                 print_mask_arg(sysdecode_semget_flags, *ip);
1223                                 ip++;
1224                                 narg--;
1225                                 break;
1226                         case SYS_msgctl:
1227                                 print_number(ip, narg, c);
1228                                 putchar(',');
1229                                 print_integer_arg(sysdecode_msgctl_cmd, *ip);
1230                                 ip++;
1231                                 narg--;
1232                                 break;
1233                         case SYS_shmat:
1234                                 print_number(ip, narg, c);
1235                                 print_number(ip, narg, c);
1236                                 putchar(',');
1237                                 print_mask_arg(sysdecode_shmat_flags, *ip);
1238                                 ip++;
1239                                 narg--;
1240                                 break;
1241                         case SYS_shmctl:
1242                                 print_number(ip, narg, c);
1243                                 putchar(',');
1244                                 print_integer_arg(sysdecode_shmctl_cmd, *ip);
1245                                 ip++;
1246                                 narg--;
1247                                 break;
1248                         case SYS_shm_open:
1249                                 print_number(ip, narg, c);
1250                                 putchar(',');
1251                                 print_mask_arg(sysdecode_open_flags, ip[0]);
1252                                 putchar(',');
1253                                 decode_filemode(ip[1]);
1254                                 ip += 2;
1255                                 narg -= 2;
1256                                 break;
1257                         case SYS_minherit:
1258                                 print_number(ip, narg, c);
1259                                 print_number(ip, narg, c);
1260                                 putchar(',');
1261                                 print_integer_arg(sysdecode_minherit_inherit,
1262                                     *ip);
1263                                 ip++;
1264                                 narg--;
1265                                 break;
1266                         case SYS_rfork:
1267                                 putchar('(');
1268                                 print_mask_arg(sysdecode_rfork_flags, *ip);
1269                                 ip++;
1270                                 narg--;
1271                                 c = ',';
1272                                 break;
1273                         case SYS_lio_listio:
1274                                 putchar('(');
1275                                 print_integer_arg(sysdecode_lio_listio_mode,
1276                                     *ip);
1277                                 ip++;
1278                                 narg--;
1279                                 c = ',';
1280                                 break;
1281                         case SYS_mlockall:
1282                                 putchar('(');
1283                                 print_mask_arg(sysdecode_mlockall_flags, *ip);
1284                                 ip++;
1285                                 narg--;
1286                                 break;
1287                         case SYS_sched_setscheduler:
1288                                 print_number(ip, narg, c);
1289                                 putchar(',');
1290                                 print_integer_arg(sysdecode_scheduler_policy,
1291                                     *ip);
1292                                 ip++;
1293                                 narg--;
1294                                 break;
1295                         case SYS_sched_get_priority_max:
1296                         case SYS_sched_get_priority_min:
1297                                 putchar('(');
1298                                 print_integer_arg(sysdecode_scheduler_policy,
1299                                     *ip);
1300                                 ip++;
1301                                 narg--;
1302                                 break;
1303                         case SYS_sendfile:
1304                                 print_number(ip, narg, c);
1305                                 print_number(ip, narg, c);
1306                                 print_number(ip, narg, c);
1307                                 print_number(ip, narg, c);
1308                                 print_number(ip, narg, c);
1309                                 print_number(ip, narg, c);
1310                                 putchar(',');
1311                                 print_mask_arg(sysdecode_sendfile_flags, *ip);
1312                                 ip++;
1313                                 narg--;
1314                                 break;
1315                         case SYS_kldsym:
1316                                 print_number(ip, narg, c);
1317                                 putchar(',');
1318                                 print_integer_arg(sysdecode_kldsym_cmd, *ip);
1319                                 ip++;
1320                                 narg--;
1321                                 break;
1322                         case SYS_sigprocmask:
1323                                 putchar('(');
1324                                 print_integer_arg(sysdecode_sigprocmask_how,
1325                                     *ip);
1326                                 ip++;
1327                                 narg--;
1328                                 c = ',';
1329                                 break;
1330                         case SYS___acl_get_file:
1331                         case SYS___acl_set_file:
1332                         case SYS___acl_get_fd:
1333                         case SYS___acl_set_fd:
1334                         case SYS___acl_delete_file:
1335                         case SYS___acl_delete_fd:
1336                         case SYS___acl_aclcheck_file:
1337                         case SYS___acl_aclcheck_fd:
1338                         case SYS___acl_get_link:
1339                         case SYS___acl_set_link:
1340                         case SYS___acl_delete_link:
1341                         case SYS___acl_aclcheck_link:
1342                                 print_number(ip, narg, c);
1343                                 putchar(',');
1344                                 print_integer_arg(sysdecode_acltype, *ip);
1345                                 ip++;
1346                                 narg--;
1347                                 break;
1348                         case SYS_sigaction:
1349                                 putchar('(');
1350                                 print_signal(*ip);
1351                                 ip++;
1352                                 narg--;
1353                                 c = ',';
1354                                 break;
1355                         case SYS_extattrctl:
1356                                 print_number(ip, narg, c);
1357                                 putchar(',');
1358                                 print_integer_arg(sysdecode_extattrnamespace,
1359                                     *ip);
1360                                 ip++;
1361                                 narg--;
1362                                 break;
1363                         case SYS_nmount:
1364                                 print_number(ip, narg, c);
1365                                 print_number(ip, narg, c);
1366                                 putchar(',');
1367                                 print_mask_arg(sysdecode_mount_flags, *ip);
1368                                 ip++;
1369                                 narg--;
1370                                 break;
1371                         case SYS_thr_create:
1372                                 print_number(ip, narg, c);
1373                                 print_number(ip, narg, c);
1374                                 putchar(',');
1375                                 print_mask_arg(sysdecode_thr_create_flags, *ip);
1376                                 ip++;
1377                                 narg--;
1378                                 break;
1379                         case SYS_thr_kill:
1380                                 print_number(ip, narg, c);
1381                                 putchar(',');
1382                                 print_signal(*ip);
1383                                 ip++;
1384                                 narg--;
1385                                 break;
1386                         case SYS_kldunloadf:
1387                                 print_number(ip, narg, c);
1388                                 putchar(',');
1389                                 print_integer_arg(sysdecode_kldunload_flags,
1390                                     *ip);
1391                                 ip++;
1392                                 narg--;
1393                                 break;
1394                         case SYS_linkat:
1395                         case SYS_renameat:
1396                         case SYS_symlinkat:
1397                                 print_number(ip, narg, c);
1398                                 putchar(',');
1399                                 print_integer_arg_valid(sysdecode_atfd, *ip);
1400                                 ip++;
1401                                 narg--;
1402                                 print_number(ip, narg, c);
1403                                 break;
1404                         case SYS_cap_fcntls_limit:
1405                                 print_number(ip, narg, c);
1406                                 putchar(',');
1407                                 arg = *ip;
1408                                 ip++;
1409                                 narg--;
1410                                 print_mask_arg32(sysdecode_cap_fcntlrights, arg);
1411                                 break;
1412                         case SYS_posix_fadvise:
1413                                 print_number(ip, narg, c);
1414                                 print_number(ip, narg, c);
1415                                 print_number(ip, narg, c);
1416                                 (void)putchar(',');
1417                                 print_integer_arg(sysdecode_fadvice, *ip);
1418                                 ip++;
1419                                 narg--;
1420                                 break;
1421                         case SYS_procctl:
1422                                 putchar('(');
1423                                 print_integer_arg(sysdecode_idtype, *ip);
1424                                 c = ',';
1425                                 ip++;
1426                                 narg--;
1427                                 print_number64(first, ip, narg, c);
1428                                 putchar(',');
1429                                 print_integer_arg(sysdecode_procctl_cmd, *ip);
1430                                 ip++;
1431                                 narg--;
1432                                 break;
1433                         case SYS__umtx_op:
1434                                 print_number(ip, narg, c);
1435                                 putchar(',');
1436                                 print_integer_arg(sysdecode_umtx_op, *ip);
1437                                 switch (*ip) {
1438                                 case UMTX_OP_CV_WAIT:
1439                                         ip++;
1440                                         narg--;
1441                                         putchar(',');
1442                                         print_mask_argul(
1443                                             sysdecode_umtx_cvwait_flags, *ip);
1444                                         break;
1445                                 case UMTX_OP_RW_RDLOCK:
1446                                         ip++;
1447                                         narg--;
1448                                         putchar(',');
1449                                         print_mask_argul(
1450                                             sysdecode_umtx_rwlock_flags, *ip);
1451                                         break;
1452                                 }
1453                                 ip++;
1454                                 narg--;
1455                                 break;
1456                         case SYS_ftruncate:
1457                         case SYS_truncate:
1458                                 print_number(ip, narg, c);
1459                                 print_number64(first, ip, narg, c);
1460                                 break;
1461                         case SYS_fchownat:
1462                                 print_number(ip, narg, c);
1463                                 print_number(ip, narg, c);
1464                                 print_number(ip, narg, c);
1465                                 break;
1466                         case SYS_fstatat:
1467                         case SYS_utimensat:
1468                                 print_number(ip, narg, c);
1469                                 print_number(ip, narg, c);
1470                                 break;
1471                         case SYS_unlinkat:
1472                                 print_number(ip, narg, c);
1473                                 break;
1474                         case SYS_sysarch:
1475                                 putchar('(');
1476                                 print_integer_arg(sysdecode_sysarch_number, *ip);
1477                                 ip++;
1478                                 narg--;
1479                                 c = ',';
1480                                 break;
1481                         }
1482                         switch (ktr->ktr_code) {
1483                         case SYS_chflagsat:
1484                         case SYS_fchownat:
1485                         case SYS_faccessat:
1486                         case SYS_fchmodat:
1487                         case SYS_fstatat:
1488                         case SYS_linkat:
1489                         case SYS_unlinkat:
1490                         case SYS_utimensat:
1491                                 putchar(',');
1492                                 print_mask_arg0(sysdecode_atflags, *ip);
1493                                 ip++;
1494                                 narg--;
1495                                 break;
1496                         }
1497                 }
1498                 while (narg > 0) {
1499                         print_number(ip, narg, c);
1500                 }
1501                 putchar(')');
1502         }
1503         putchar('\n');
1504 }
1505
1506 void
1507 ktrsysret(struct ktr_sysret *ktr, u_int sv_flags)
1508 {
1509         register_t ret = ktr->ktr_retval;
1510         int error = ktr->ktr_error;
1511
1512         syscallname(ktr->ktr_code, sv_flags);
1513         printf(" ");
1514
1515         if (error == 0) {
1516                 if (fancy) {
1517                         printf("%ld", (long)ret);
1518                         if (ret < 0 || ret > 9)
1519                                 printf("/%#lx", (unsigned long)ret);
1520                 } else {
1521                         if (decimal)
1522                                 printf("%ld", (long)ret);
1523                         else
1524                                 printf("%#lx", (unsigned long)ret);
1525                 }
1526         } else if (error == ERESTART)
1527                 printf("RESTART");
1528         else if (error == EJUSTRETURN)
1529                 printf("JUSTRETURN");
1530         else {
1531                 printf("-1 errno %d", sysdecode_freebsd_to_abi_errno(
1532                     syscallabi(sv_flags), error));
1533                 if (fancy)
1534                         printf(" %s", strerror(ktr->ktr_error));
1535         }
1536         putchar('\n');
1537 }
1538
1539 void
1540 ktrnamei(char *cp, int len)
1541 {
1542         printf("\"%.*s\"\n", len, cp);
1543 }
1544
1545 void
1546 hexdump(char *p, int len, int screenwidth)
1547 {
1548         int n, i;
1549         int width;
1550
1551         width = 0;
1552         do {
1553                 width += 2;
1554                 i = 13;                 /* base offset */
1555                 i += (width / 2) + 1;   /* spaces every second byte */
1556                 i += (width * 2);       /* width of bytes */
1557                 i += 3;                 /* "  |" */
1558                 i += width;             /* each byte */
1559                 i += 1;                 /* "|" */
1560         } while (i < screenwidth);
1561         width -= 2;
1562
1563         for (n = 0; n < len; n += width) {
1564                 for (i = n; i < n + width; i++) {
1565                         if ((i % width) == 0) { /* beginning of line */
1566                                 printf("       0x%04x", i);
1567                         }
1568                         if ((i % 2) == 0) {
1569                                 printf(" ");
1570                         }
1571                         if (i < len)
1572                                 printf("%02x", p[i] & 0xff);
1573                         else
1574                                 printf("  ");
1575                 }
1576                 printf("  |");
1577                 for (i = n; i < n + width; i++) {
1578                         if (i >= len)
1579                                 break;
1580                         if (p[i] >= ' ' && p[i] <= '~')
1581                                 printf("%c", p[i]);
1582                         else
1583                                 printf(".");
1584                 }
1585                 printf("|\n");
1586         }
1587         if ((i % width) != 0)
1588                 printf("\n");
1589 }
1590
1591 void
1592 visdump(char *dp, int datalen, int screenwidth)
1593 {
1594         int col = 0;
1595         char *cp;
1596         int width;
1597         char visbuf[5];
1598
1599         printf("       \"");
1600         col = 8;
1601         for (;datalen > 0; datalen--, dp++) {
1602                  vis(visbuf, *dp, VIS_CSTYLE, *(dp+1));
1603                 cp = visbuf;
1604                 /*
1605                  * Keep track of printables and
1606                  * space chars (like fold(1)).
1607                  */
1608                 if (col == 0) {
1609                         putchar('\t');
1610                         col = 8;
1611                 }
1612                 switch(*cp) {
1613                 case '\n':
1614                         col = 0;
1615                         putchar('\n');
1616                         continue;
1617                 case '\t':
1618                         width = 8 - (col&07);
1619                         break;
1620                 default:
1621                         width = strlen(cp);
1622                 }
1623                 if (col + width > (screenwidth-2)) {
1624                         printf("\\\n\t");
1625                         col = 8;
1626                 }
1627                 col += width;
1628                 do {
1629                         putchar(*cp++);
1630                 } while (*cp);
1631         }
1632         if (col == 0)
1633                 printf("       ");
1634         printf("\"\n");
1635 }
1636
1637 void
1638 ktrgenio(struct ktr_genio *ktr, int len)
1639 {
1640         int datalen = len - sizeof (struct ktr_genio);
1641         char *dp = (char *)ktr + sizeof (struct ktr_genio);
1642         static int screenwidth = 0;
1643         int i, binary;
1644
1645         printf("fd %d %s %d byte%s\n", ktr->ktr_fd,
1646                 ktr->ktr_rw == UIO_READ ? "read" : "wrote", datalen,
1647                 datalen == 1 ? "" : "s");
1648         if (suppressdata)
1649                 return;
1650         if (screenwidth == 0) {
1651                 struct winsize ws;
1652
1653                 if (fancy && ioctl(fileno(stderr), TIOCGWINSZ, &ws) != -1 &&
1654                     ws.ws_col > 8)
1655                         screenwidth = ws.ws_col;
1656                 else
1657                         screenwidth = 80;
1658         }
1659         if (maxdata && datalen > maxdata)
1660                 datalen = maxdata;
1661
1662         for (i = 0, binary = 0; i < datalen && binary == 0; i++)  {
1663                 if (dp[i] >= 32 && dp[i] < 127)
1664                         continue;
1665                 if (dp[i] == 10 || dp[i] == 13 || dp[i] == 0 || dp[i] == 9)
1666                         continue;
1667                 binary = 1;
1668         }
1669         if (binary)
1670                 hexdump(dp, datalen, screenwidth);
1671         else
1672                 visdump(dp, datalen, screenwidth);
1673 }
1674
1675 void
1676 ktrpsig(struct ktr_psig *psig)
1677 {
1678         const char *str;
1679
1680         print_signal(psig->signo);
1681         if (psig->action == SIG_DFL) {
1682                 printf(" SIG_DFL");
1683         } else {
1684                 printf(" caught handler=0x%lx mask=0x%x",
1685                     (u_long)psig->action, psig->mask.__bits[0]);
1686         }
1687         printf(" code=");
1688         str = sysdecode_sigcode(psig->signo, psig->code);
1689         if (str != NULL)
1690                 printf("%s", str);
1691         else
1692                 printf("<invalid=%#x>", psig->code);
1693         putchar('\n');
1694 }
1695
1696 void
1697 ktrcsw_old(struct ktr_csw_old *cs)
1698 {
1699         printf("%s %s\n", cs->out ? "stop" : "resume",
1700                 cs->user ? "user" : "kernel");
1701 }
1702
1703 void
1704 ktrcsw(struct ktr_csw *cs)
1705 {
1706         printf("%s %s \"%s\"\n", cs->out ? "stop" : "resume",
1707             cs->user ? "user" : "kernel", cs->wmesg);
1708 }
1709
1710 void
1711 ktruser(int len, void *p)
1712 {
1713         unsigned char *cp;
1714
1715         if (sysdecode_utrace(stdout, p, len)) {
1716                 printf("\n");
1717                 return;
1718         }
1719
1720         printf("%d ", len);
1721         cp = p;
1722         while (len--)
1723                 if (decimal)
1724                         printf(" %d", *cp++);
1725                 else
1726                         printf(" %02x", *cp++);
1727         printf("\n");
1728 }
1729
1730 void
1731 ktrcaprights(cap_rights_t *rightsp)
1732 {
1733
1734         printf("cap_rights_t ");
1735         sysdecode_cap_rights(stdout, rightsp);
1736         printf("\n");
1737 }
1738
1739 static void
1740 ktrtimeval(struct timeval *tv)
1741 {
1742
1743         printf("{%ld, %ld}", (long)tv->tv_sec, tv->tv_usec);
1744 }
1745
1746 void
1747 ktritimerval(struct itimerval *it)
1748 {
1749
1750         printf("itimerval { .interval = ");
1751         ktrtimeval(&it->it_interval);
1752         printf(", .value = ");
1753         ktrtimeval(&it->it_value);
1754         printf(" }\n");
1755 }
1756
1757 void
1758 ktrsockaddr(struct sockaddr *sa)
1759 {
1760 /*
1761  TODO: Support additional address families
1762         #include <netsmb/netbios.h>
1763         struct sockaddr_nb      *nb;
1764 */
1765         const char *str;
1766         char addr[64];
1767
1768         /*
1769          * note: ktrstruct() has already verified that sa points to a
1770          * buffer at least sizeof(struct sockaddr) bytes long and exactly
1771          * sa->sa_len bytes long.
1772          */
1773         printf("struct sockaddr { ");
1774         str = sysdecode_sockaddr_family(sa->sa_family);
1775         if (str != NULL)
1776                 printf("%s", str);
1777         else
1778                 printf("<invalid=%d>", sa->sa_family);
1779         printf(", ");
1780
1781 #define check_sockaddr_len(n)                                   \
1782         if (sa_##n.s##n##_len < sizeof(struct sockaddr_##n)) {  \
1783                 printf("invalid");                              \
1784                 break;                                          \
1785         }
1786
1787         switch(sa->sa_family) {
1788         case AF_INET: {
1789                 struct sockaddr_in sa_in;
1790
1791                 memset(&sa_in, 0, sizeof(sa_in));
1792                 memcpy(&sa_in, sa, sa->sa_len);
1793                 check_sockaddr_len(in);
1794                 inet_ntop(AF_INET, &sa_in.sin_addr, addr, sizeof addr);
1795                 printf("%s:%u", addr, ntohs(sa_in.sin_port));
1796                 break;
1797         }
1798         case AF_INET6: {
1799                 struct sockaddr_in6 sa_in6;
1800
1801                 memset(&sa_in6, 0, sizeof(sa_in6));
1802                 memcpy(&sa_in6, sa, sa->sa_len);
1803                 check_sockaddr_len(in6);
1804                 getnameinfo((struct sockaddr *)&sa_in6, sizeof(sa_in6),
1805                     addr, sizeof(addr), NULL, 0, NI_NUMERICHOST);
1806                 printf("[%s]:%u", addr, htons(sa_in6.sin6_port));
1807                 break;
1808         }
1809         case AF_UNIX: {
1810                 struct sockaddr_un sa_un;
1811
1812                 memset(&sa_un, 0, sizeof(sa_un));
1813                 memcpy(&sa_un, sa, sa->sa_len);
1814                 printf("%.*s", (int)sizeof(sa_un.sun_path), sa_un.sun_path);
1815                 break;
1816         }
1817         default:
1818                 printf("unknown address family");
1819         }
1820         printf(" }\n");
1821 }
1822
1823 void
1824 ktrstat(struct stat *statp)
1825 {
1826         char mode[12], timestr[PATH_MAX + 4];
1827         struct passwd *pwd;
1828         struct group  *grp;
1829         struct tm *tm;
1830
1831         /*
1832          * note: ktrstruct() has already verified that statp points to a
1833          * buffer exactly sizeof(struct stat) bytes long.
1834          */
1835         printf("struct stat {");
1836         printf("dev=%ju, ino=%ju, ",
1837                 (uintmax_t)statp->st_dev, (uintmax_t)statp->st_ino);
1838         if (resolv == 0)
1839                 printf("mode=0%jo, ", (uintmax_t)statp->st_mode);
1840         else {
1841                 strmode(statp->st_mode, mode);
1842                 printf("mode=%s, ", mode);
1843         }
1844         printf("nlink=%ju, ", (uintmax_t)statp->st_nlink);
1845         if (resolv == 0) {
1846                 pwd = NULL;
1847         } else {
1848 #ifdef WITH_CASPER
1849                 if (cappwd != NULL)
1850                         pwd = cap_getpwuid(cappwd, statp->st_uid);
1851                 else
1852 #endif
1853                         pwd = getpwuid(statp->st_uid);
1854         }
1855         if (pwd == NULL)
1856                 printf("uid=%ju, ", (uintmax_t)statp->st_uid);
1857         else
1858                 printf("uid=\"%s\", ", pwd->pw_name);
1859         if (resolv == 0) {
1860                 grp = NULL;
1861         } else {
1862 #ifdef WITH_CASPER
1863                 if (capgrp != NULL)
1864                         grp = cap_getgrgid(capgrp, statp->st_gid);
1865                 else
1866 #endif
1867                         grp = getgrgid(statp->st_gid);
1868         }
1869         if (grp == NULL)
1870                 printf("gid=%ju, ", (uintmax_t)statp->st_gid);
1871         else
1872                 printf("gid=\"%s\", ", grp->gr_name);
1873         printf("rdev=%ju, ", (uintmax_t)statp->st_rdev);
1874         printf("atime=");
1875         if (resolv == 0)
1876                 printf("%jd", (intmax_t)statp->st_atim.tv_sec);
1877         else {
1878                 tm = localtime(&statp->st_atim.tv_sec);
1879                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1880                 printf("\"%s\"", timestr);
1881         }
1882         if (statp->st_atim.tv_nsec != 0)
1883                 printf(".%09ld, ", statp->st_atim.tv_nsec);
1884         else
1885                 printf(", ");
1886         printf("mtime=");
1887         if (resolv == 0)
1888                 printf("%jd", (intmax_t)statp->st_mtim.tv_sec);
1889         else {
1890                 tm = localtime(&statp->st_mtim.tv_sec);
1891                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1892                 printf("\"%s\"", timestr);
1893         }
1894         if (statp->st_mtim.tv_nsec != 0)
1895                 printf(".%09ld, ", statp->st_mtim.tv_nsec);
1896         else
1897                 printf(", ");
1898         printf("ctime=");
1899         if (resolv == 0)
1900                 printf("%jd", (intmax_t)statp->st_ctim.tv_sec);
1901         else {
1902                 tm = localtime(&statp->st_ctim.tv_sec);
1903                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1904                 printf("\"%s\"", timestr);
1905         }
1906         if (statp->st_ctim.tv_nsec != 0)
1907                 printf(".%09ld, ", statp->st_ctim.tv_nsec);
1908         else
1909                 printf(", ");
1910         printf("birthtime=");
1911         if (resolv == 0)
1912                 printf("%jd", (intmax_t)statp->st_birthtim.tv_sec);
1913         else {
1914                 tm = localtime(&statp->st_birthtim.tv_sec);
1915                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1916                 printf("\"%s\"", timestr);
1917         }
1918         if (statp->st_birthtim.tv_nsec != 0)
1919                 printf(".%09ld, ", statp->st_birthtim.tv_nsec);
1920         else
1921                 printf(", ");
1922         printf("size=%jd, blksize=%ju, blocks=%jd, flags=0x%x",
1923                 (uintmax_t)statp->st_size, (uintmax_t)statp->st_blksize,
1924                 (intmax_t)statp->st_blocks, statp->st_flags);
1925         printf(" }\n");
1926 }
1927
1928 void
1929 ktrstruct(char *buf, size_t buflen)
1930 {
1931         char *name, *data;
1932         size_t namelen, datalen;
1933         int i;
1934         cap_rights_t rights;
1935         struct itimerval it;
1936         struct stat sb;
1937         struct sockaddr_storage ss;
1938
1939         for (name = buf, namelen = 0;
1940              namelen < buflen && name[namelen] != '\0';
1941              ++namelen)
1942                 /* nothing */;
1943         if (namelen == buflen)
1944                 goto invalid;
1945         if (name[namelen] != '\0')
1946                 goto invalid;
1947         data = buf + namelen + 1;
1948         datalen = buflen - namelen - 1;
1949         if (datalen == 0)
1950                 goto invalid;
1951         /* sanity check */
1952         for (i = 0; i < (int)namelen; ++i)
1953                 if (!isalpha(name[i]))
1954                         goto invalid;
1955         if (strcmp(name, "caprights") == 0) {
1956                 if (datalen != sizeof(cap_rights_t))
1957                         goto invalid;
1958                 memcpy(&rights, data, datalen);
1959                 ktrcaprights(&rights);
1960         } else if (strcmp(name, "itimerval") == 0) {
1961                 if (datalen != sizeof(struct itimerval))
1962                         goto invalid;
1963                 memcpy(&it, data, datalen);
1964                 ktritimerval(&it);
1965         } else if (strcmp(name, "stat") == 0) {
1966                 if (datalen != sizeof(struct stat))
1967                         goto invalid;
1968                 memcpy(&sb, data, datalen);
1969                 ktrstat(&sb);
1970         } else if (strcmp(name, "sockaddr") == 0) {
1971                 if (datalen > sizeof(ss))
1972                         goto invalid;
1973                 memcpy(&ss, data, datalen);
1974                 if (datalen != ss.ss_len)
1975                         goto invalid;
1976                 ktrsockaddr((struct sockaddr *)&ss);
1977         } else {
1978                 printf("unknown structure\n");
1979         }
1980         return;
1981 invalid:
1982         printf("invalid record\n");
1983 }
1984
1985 void
1986 ktrcapfail(struct ktr_cap_fail *ktr)
1987 {
1988         switch (ktr->cap_type) {
1989         case CAPFAIL_NOTCAPABLE:
1990                 /* operation on fd with insufficient capabilities */
1991                 printf("operation requires ");
1992                 sysdecode_cap_rights(stdout, &ktr->cap_needed);
1993                 printf(", descriptor holds ");
1994                 sysdecode_cap_rights(stdout, &ktr->cap_held);
1995                 break;
1996         case CAPFAIL_INCREASE:
1997                 /* requested more capabilities than fd already has */
1998                 printf("attempt to increase capabilities from ");
1999                 sysdecode_cap_rights(stdout, &ktr->cap_held);
2000                 printf(" to ");
2001                 sysdecode_cap_rights(stdout, &ktr->cap_needed);
2002                 break;
2003         case CAPFAIL_SYSCALL:
2004                 /* called restricted syscall */
2005                 printf("disallowed system call");
2006                 break;
2007         case CAPFAIL_LOOKUP:
2008                 /* used ".." in strict-relative mode */
2009                 printf("restricted VFS lookup");
2010                 break;
2011         default:
2012                 printf("unknown capability failure: ");
2013                 sysdecode_cap_rights(stdout, &ktr->cap_needed);
2014                 printf(" ");
2015                 sysdecode_cap_rights(stdout, &ktr->cap_held);
2016                 break;
2017         }
2018         printf("\n");
2019 }
2020
2021 void
2022 ktrfault(struct ktr_fault *ktr)
2023 {
2024
2025         printf("0x%jx ", (uintmax_t)ktr->vaddr);
2026         print_mask_arg(sysdecode_vmprot, ktr->type);
2027         printf("\n");
2028 }
2029
2030 void
2031 ktrfaultend(struct ktr_faultend *ktr)
2032 {
2033         const char *str;
2034
2035         str = sysdecode_vmresult(ktr->result);
2036         if (str != NULL)
2037                 printf("%s", str);
2038         else
2039                 printf("<invalid=%d>", ktr->result);
2040         printf("\n");
2041 }
2042
2043 void
2044 ktrkevent(struct kevent *kev)
2045 {
2046
2047         printf("{ ident=");
2048         switch (kev->filter) {
2049         case EVFILT_READ:
2050         case EVFILT_WRITE:
2051         case EVFILT_VNODE:
2052         case EVFILT_PROC:
2053         case EVFILT_TIMER:
2054         case EVFILT_PROCDESC:
2055         case EVFILT_EMPTY:
2056                 printf("%ju", (uintmax_t)kev->ident);
2057                 break;
2058         case EVFILT_SIGNAL:
2059                 print_signal(kev->ident);
2060                 break;
2061         default:
2062                 printf("%p", (void *)kev->ident);
2063         }
2064         printf(", filter=");
2065         print_integer_arg(sysdecode_kevent_filter, kev->filter);
2066         printf(", flags=");
2067         print_mask_arg0(sysdecode_kevent_flags, kev->flags);
2068         printf(", fflags=");
2069         sysdecode_kevent_fflags(stdout, kev->filter, kev->fflags,
2070             decimal ? 10 : 16);
2071         printf(", data=%#jx, udata=%p }", (uintmax_t)kev->data, kev->udata);
2072 }
2073
2074 void
2075 ktrstructarray(struct ktr_struct_array *ksa, size_t buflen)
2076 {
2077         struct kevent kev;
2078         char *name, *data;
2079         size_t namelen, datalen;
2080         int i;
2081         bool first;
2082
2083         buflen -= sizeof(*ksa);
2084         for (name = (char *)(ksa + 1), namelen = 0;
2085              namelen < buflen && name[namelen] != '\0';
2086              ++namelen)
2087                 /* nothing */;
2088         if (namelen == buflen)
2089                 goto invalid;
2090         if (name[namelen] != '\0')
2091                 goto invalid;
2092         /* sanity check */
2093         for (i = 0; i < (int)namelen; ++i)
2094                 if (!isalnum(name[i]) && name[i] != '_')
2095                         goto invalid;
2096         data = name + namelen + 1;
2097         datalen = buflen - namelen - 1;
2098         printf("struct %s[] = { ", name);
2099         first = true;
2100         for (; datalen >= ksa->struct_size;
2101             data += ksa->struct_size, datalen -= ksa->struct_size) {
2102                 if (!first)
2103                         printf("\n             ");
2104                 else
2105                         first = false;
2106                 if (strcmp(name, "kevent") == 0) {
2107                         if (ksa->struct_size != sizeof(kev))
2108                                 goto bad_size;
2109                         memcpy(&kev, data, sizeof(kev));
2110                         ktrkevent(&kev);
2111                 } else if (strcmp(name, "kevent_freebsd11") == 0) {
2112                         struct kevent_freebsd11 kev11;
2113
2114                         if (ksa->struct_size != sizeof(kev11))
2115                                 goto bad_size;
2116                         memcpy(&kev11, data, sizeof(kev11));
2117                         memset(&kev, 0, sizeof(kev));
2118                         kev.ident = kev11.ident;
2119                         kev.filter = kev11.filter;
2120                         kev.flags = kev11.flags;
2121                         kev.fflags = kev11.fflags;
2122                         kev.data = kev11.data;
2123                         kev.udata = kev11.udata;
2124                         ktrkevent(&kev);
2125 #ifdef _WANT_KEVENT32
2126                 } else if (strcmp(name, "kevent32") == 0) {
2127                         struct kevent32 kev32;
2128
2129                         if (ksa->struct_size != sizeof(kev32))
2130                                 goto bad_size;
2131                         memcpy(&kev32, data, sizeof(kev32));
2132                         memset(&kev, 0, sizeof(kev));
2133                         kev.ident = kev32.ident;
2134                         kev.filter = kev32.filter;
2135                         kev.flags = kev32.flags;
2136                         kev.fflags = kev32.fflags;
2137 #if BYTE_ORDER == BIG_ENDIAN
2138                         kev.data = kev32.data2 | ((int64_t)kev32.data1 << 32);
2139 #else
2140                         kev.data = kev32.data1 | ((int64_t)kev32.data2 << 32);
2141 #endif
2142                         kev.udata = (void *)(uintptr_t)kev32.udata;
2143                         ktrkevent(&kev);
2144                 } else if (strcmp(name, "kevent32_freebsd11") == 0) {
2145                         struct kevent32_freebsd11 kev32;
2146
2147                         if (ksa->struct_size != sizeof(kev32))
2148                                 goto bad_size;
2149                         memcpy(&kev32, data, sizeof(kev32));
2150                         memset(&kev, 0, sizeof(kev));
2151                         kev.ident = kev32.ident;
2152                         kev.filter = kev32.filter;
2153                         kev.flags = kev32.flags;
2154                         kev.fflags = kev32.fflags;
2155                         kev.data = kev32.data;
2156                         kev.udata = (void *)(uintptr_t)kev32.udata;
2157                         ktrkevent(&kev);
2158 #endif
2159                 } else {
2160                         printf("<unknown structure> }\n");
2161                         return;
2162                 }
2163         }
2164         printf(" }\n");
2165         return;
2166 invalid:
2167         printf("invalid record\n");
2168         return;
2169 bad_size:
2170         printf("<bad size> }\n");
2171         return;
2172 }
2173
2174 void
2175 usage(void)
2176 {
2177         fprintf(stderr, "usage: kdump [-dEnlHRrSsTA] [-f trfile] "
2178             "[-m maxdata] [-p pid] [-t trstr]\n");
2179         exit(1);
2180 }