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 #define _WANT_FREEBSD_BITSET
  52 #include <sys/param.h>
  53 #include <sys/capsicum.h>
  54 #include <sys/_bitset.h>
  55 #include <sys/bitset.h>
  56 #include <sys/errno.h>
  57 #include <sys/time.h>
  58 #include <sys/uio.h>
  59 #include <sys/event.h>
  60 #include <sys/ktrace.h>
  61 #include <sys/mman.h>
  62 #include <sys/ioctl.h>
  63 #include <sys/socket.h>
  64 #include <sys/stat.h>
  65 #include <sys/sysent.h>
  66 #include <sys/umtx.h>
  67 #include <sys/un.h>
  68 #include <sys/queue.h>
  69 #include <sys/wait.h>
  70 #ifdef WITH_CASPER
  71 #include <sys/nv.h>
  72 #endif
  73 #include <arpa/inet.h>
  74 #include <netinet/in.h>
  75 #include <ctype.h>
  76 #include <capsicum_helpers.h>
  77 #include <err.h>
  78 #include <grp.h>
  79 #include <inttypes.h>
  80 #include <locale.h>
  81 #include <netdb.h>
  82 #include <nl_types.h>
  83 #include <pwd.h>
  84 #include <stddef.h>
  85 #include <stdio.h>
  86 #include <stdlib.h>
  87 #include <string.h>
  88 #include <sysdecode.h>
  89 #include <time.h>
  90 #include <unistd.h>
  91 #include <vis.h>
  92 #include "ktrace.h"
  93 #include "kdump.h"
  94
  95 #ifdef WITH_CASPER
  96 #include <libcasper.h>
  97
  98 #include <casper/cap_grp.h>
  99 #include <casper/cap_pwd.h>
 100 #endif
 101
 102 int fetchprocinfo(struct ktr_header *, u_int *);
 103 u_int findabi(struct ktr_header *);
 104 int fread_tail(void *, int, int);
 105 void dumpheader(struct ktr_header *, u_int);
 106 void dumptimeval(struct ktr_header_v0 *kth);
 107 void dumptimespec(struct ktr_header *kth);
 108 void ktrsyscall(struct ktr_syscall *, u_int);
 109 void ktrsysret(struct ktr_sysret *, u_int);
 110 void ktrnamei(char *, int);
 111 void hexdump(char *, int, int);
 112 void visdump(char *, int, int);
 113 void ktrgenio(struct ktr_genio *, int);
 114 void ktrpsig(struct ktr_psig *);
 115 void ktrcsw(struct ktr_csw *);
 116 void ktrcsw_old(struct ktr_csw_old *);
 117 void ktruser(int, void *);
 118 void ktrcaprights(cap_rights_t *);
 119 void ktritimerval(struct itimerval *it);
 120 void ktrsockaddr(struct sockaddr *);
 121 void ktrstat(struct stat *);
 122 void ktrstruct(char *, size_t);
 123 void ktrcapfail(struct ktr_cap_fail *);
 124 void ktrfault(struct ktr_fault *);
 125 void ktrfaultend(struct ktr_faultend *);
 126 void ktrkevent(struct kevent *);
 127 void ktrstructarray(struct ktr_struct_array *, size_t);
 128 void ktrbitset(char *, struct bitset *, size_t);
 129 void ktrsyscall_freebsd(struct ktr_syscall *ktr, register_t **resip,
 130     int *resnarg, char *resc, u_int sv_flags);
 131 void usage(void);
 132
 133 #define TIMESTAMP_NONE          0x0
 134 #define TIMESTAMP_ABSOLUTE      0x1
 135 #define TIMESTAMP_ELAPSED       0x2
 136 #define TIMESTAMP_RELATIVE      0x4
 137
 138 bool decimal, fancy = true, resolv;
 139 static bool abiflag, suppressdata, syscallno, tail, threads, cpuflag;
 140 static int timestamp, maxdata;
 141 static const char *tracefile = DEF_TRACEFILE;
 142 static struct ktr_header ktr_header;
 143 static short version;
 144
 145 #define TIME_FORMAT     "%b %e %T %Y"
 146 #define eqs(s1, s2)     (strcmp((s1), (s2)) == 0)
 147
 148 struct proc_info
 149 {
 150         TAILQ_ENTRY(proc_info)  info;
 151         u_int                   sv_flags;
 152         pid_t                   pid;
 153 };
 154
 155 static TAILQ_HEAD(trace_procs, proc_info) trace_procs;
 156
 157 #ifdef WITH_CASPER
 158 static cap_channel_t *cappwd, *capgrp;
 159
 160 static int
 161 cappwdgrp_setup(cap_channel_t **cappwdp, cap_channel_t **capgrpp)
 162 {
 163         cap_channel_t *capcas, *cappwdloc, *capgrploc;
 164         const char *cmds[1], *fields[1];
 165
 166         capcas = cap_init();
 167         if (capcas == NULL) {
 168                 err(1, "unable to create casper process");
 169                 exit(1);
 170         }
 171         cappwdloc = cap_service_open(capcas, "system.pwd");
 172         capgrploc = cap_service_open(capcas, "system.grp");
 173         /* Casper capability no longer needed. */
 174         cap_close(capcas);
 175         if (cappwdloc == NULL || capgrploc == NULL) {
 176                 if (cappwdloc == NULL)
 177                         warn("unable to open system.pwd service");
 178                 if (capgrploc == NULL)
 179                         warn("unable to open system.grp service");
 180                 exit(1);
 181         }
 182         /* Limit system.pwd to only getpwuid() function and pw_name field. */
 183         cmds[0] = "getpwuid";
 184         if (cap_pwd_limit_cmds(cappwdloc, cmds, 1) < 0)
 185                 err(1, "unable to limit system.pwd service");
 186         fields[0] = "pw_name";
 187         if (cap_pwd_limit_fields(cappwdloc, fields, 1) < 0)
 188                 err(1, "unable to limit system.pwd service");
 189         /* Limit system.grp to only getgrgid() function and gr_name field. */
 190         cmds[0] = "getgrgid";
 191         if (cap_grp_limit_cmds(capgrploc, cmds, 1) < 0)
 192                 err(1, "unable to limit system.grp service");
 193         fields[0] = "gr_name";
 194         if (cap_grp_limit_fields(capgrploc, fields, 1) < 0)
 195                 err(1, "unable to limit system.grp service");
 196
 197         *cappwdp = cappwdloc;
 198         *capgrpp = capgrploc;
 199         return (0);
 200 }
 201 #endif  /* WITH_CASPER */
 202
 203 void
 204 print_integer_arg(const char *(*decoder)(int), int value)
 205 {
 206         const char *str;
 207
 208         str = decoder(value);
 209         if (str != NULL)
 210                 printf("%s", str);
 211         else {
 212                 if (decimal)
 213                         printf("<invalid=%d>", value);
 214                 else
 215                         printf("<invalid=%#x>", value);
 216         }
 217 }
 218
 219 /* Like print_integer_arg but unknown values are treated as valid. */
 220 void
 221 print_integer_arg_valid(const char *(*decoder)(int), int value)
 222 {
 223         const char *str;
 224
 225         str = decoder(value);
 226         if (str != NULL)
 227                 printf("%s", str);
 228         else {
 229                 if (decimal)
 230                         printf("%d", value);
 231                 else
 232                         printf("%#x", value);
 233         }
 234 }
 235
 236 bool
 237 print_mask_arg_part(bool (*decoder)(FILE *, int, int *), int value, int *rem)
 238 {
 239
 240         printf("%#x<", value);
 241         return (decoder(stdout, value, rem));
 242 }
 243
 244 void
 245 print_mask_arg(bool (*decoder)(FILE *, int, int *), int value)
 246 {
 247         bool invalid;
 248         int rem;
 249
 250         invalid = !print_mask_arg_part(decoder, value, &rem);
 251         printf(">");
 252         if (invalid)
 253                 printf("<invalid>%u", rem);
 254 }
 255
 256 void
 257 print_mask_arg0(bool (*decoder)(FILE *, int, int *), int value)
 258 {
 259         bool invalid;
 260         int rem;
 261
 262         if (value == 0) {
 263                 printf("0");
 264                 return;
 265         }
 266         printf("%#x<", value);
 267         invalid = !decoder(stdout, value, &rem);
 268         printf(">");
 269         if (invalid)
 270                 printf("<invalid>%u", rem);
 271 }
 272
 273 static void
 274 decode_fileflags(fflags_t value)
 275 {
 276         bool invalid;
 277         fflags_t rem;
 278
 279         if (value == 0) {
 280                 printf("0");
 281                 return;
 282         }
 283         printf("%#x<", value);
 284         invalid = !sysdecode_fileflags(stdout, value, &rem);
 285         printf(">");
 286         if (invalid)
 287                 printf("<invalid>%u", rem);
 288 }
 289
 290 void
 291 decode_filemode(int value)
 292 {
 293         bool invalid;
 294         int rem;
 295
 296         if (value == 0) {
 297                 printf("0");
 298                 return;
 299         }
 300         printf("%#o<", value);
 301         invalid = !sysdecode_filemode(stdout, value, &rem);
 302         printf(">");
 303         if (invalid)
 304                 printf("<invalid>%u", rem);
 305 }
 306
 307 void
 308 print_mask_arg32(bool (*decoder)(FILE *, uint32_t, uint32_t *), uint32_t value)
 309 {
 310         bool invalid;
 311         uint32_t rem;
 312
 313         printf("%#x<", value);
 314         invalid = !decoder(stdout, value, &rem);
 315         printf(">");
 316         if (invalid)
 317                 printf("<invalid>%u", rem);
 318 }
 319
 320 void
 321 print_mask_argul(bool (*decoder)(FILE *, u_long, u_long *), u_long value)
 322 {
 323         bool invalid;
 324         u_long rem;
 325
 326         if (value == 0) {
 327                 printf("0");
 328                 return;
 329         }
 330         printf("%#lx<", value);
 331         invalid = !decoder(stdout, value, &rem);
 332         printf(">");
 333         if (invalid)
 334                 printf("<invalid>%lu", rem);
 335 }
 336
 337 int
 338 main(int argc, char *argv[])
 339 {
 340         int ch, ktrlen, size;
 341         void *m;
 342         int trpoints = ALL_POINTS;
 343         int drop_logged;
 344         pid_t pid = 0;
 345         u_int sv_flags;
 346
 347         setlocale(LC_CTYPE, "");
 348
 349         timestamp = TIMESTAMP_NONE;
 350
 351         while ((ch = getopt(argc,argv,"f:cdElm:np:AHRrSsTt:")) != -1)
 352                 switch (ch) {
 353                 case 'A':
 354                         abiflag = true;
 355                         break;
 356                 case 'f':
 357                         tracefile = optarg;
 358                         break;
 359                 case 'c':
 360                         cpuflag = true;
 361                         break;
 362                 case 'd':
 363                         decimal = true;
 364                         break;
 365                 case 'l':
 366                         tail = true;
 367                         break;
 368                 case 'm':
 369                         maxdata = atoi(optarg);
 370                         break;
 371                 case 'n':
 372                         fancy = false;
 373                         break;
 374                 case 'p':
 375                         pid = atoi(optarg);
 376                         break;
 377                 case 'r':
 378                         resolv = true;
 379                         break;
 380                 case 'S':
 381                         syscallno = true;
 382                         break;
 383                 case 's':
 384                         suppressdata = true;
 385                         break;
 386                 case 'E':
 387                         timestamp |= TIMESTAMP_ELAPSED;
 388                         break;
 389                 case 'H':
 390                         threads = true;
 391                         break;
 392                 case 'R':
 393                         timestamp |= TIMESTAMP_RELATIVE;
 394                         break;
 395                 case 'T':
 396                         timestamp |= TIMESTAMP_ABSOLUTE;
 397                         break;
 398                 case 't':
 399                         trpoints = getpoints(optarg);
 400                         if (trpoints < 0)
 401                                 errx(1, "unknown trace point in %s", optarg);
 402                         break;
 403                 default:
 404                         usage();
 405                 }
 406
 407         if (argc > optind)
 408                 usage();
 409
 410         m = malloc(size = 1025);
 411         if (m == NULL)
 412                 errx(1, "%s", strerror(ENOMEM));
 413         if (strcmp(tracefile, "-") != 0)
 414                 if (!freopen(tracefile, "r", stdin))
 415                         err(1, "%s", tracefile);
 416
 417         caph_cache_catpages();
 418         caph_cache_tzdata();
 419
 420 #ifdef WITH_CASPER
 421         if (resolv) {
 422                 if (cappwdgrp_setup(&cappwd, &capgrp) < 0) {
 423                         cappwd = NULL;
 424                         capgrp = NULL;
 425                 }
 426         }
 427         if (!resolv || (cappwd != NULL && capgrp != NULL)) {
 428                 if (caph_enter() < 0)
 429                         err(1, "unable to enter capability mode");
 430         }
 431 #else
 432         if (!resolv) {
 433                 if (caph_enter() < 0)
 434                         err(1, "unable to enter capability mode");
 435         }
 436 #endif
 437         if (caph_limit_stdio() == -1)
 438                 err(1, "unable to limit stdio");
 439
 440         TAILQ_INIT(&trace_procs);
 441         drop_logged = 0;
 442         while (fread_tail(&ktr_header, sizeof(struct ktr_header), 1)) {
 443                 if (ktr_header.ktr_type & KTR_VERSIONED) {
 444                         ktr_header.ktr_type &= ~KTR_VERSIONED;
 445                         version = ktr_header.ktr_version;
 446                 } else
 447                         version = KTR_VERSION0;
 448                 if (ktr_header.ktr_type & KTR_DROP) {
 449                         ktr_header.ktr_type &= ~KTR_DROP;
 450                         if (!drop_logged && threads) {
 451                                 printf(
 452                                     "%6d %6d %-8.*s Events dropped.\n",
 453                                     ktr_header.ktr_pid,
 454                                     ktr_header.ktr_tid > 0 ?
 455                                     (lwpid_t)ktr_header.ktr_tid : 0,
 456                                     MAXCOMLEN, ktr_header.ktr_comm);
 457                                 drop_logged = 1;
 458                         } else if (!drop_logged) {
 459                                 printf("%6d %-8.*s Events dropped.\n",
 460                                     ktr_header.ktr_pid, MAXCOMLEN,
 461                                     ktr_header.ktr_comm);
 462                                 drop_logged = 1;
 463                         }
 464                 }
 465                 if ((ktrlen = ktr_header.ktr_len) < 0)
 466                         errx(1, "bogus length 0x%x", ktrlen);
 467                 if (ktrlen > size) {
 468                         m = realloc(m, ktrlen+1);
 469                         if (m == NULL)
 470                                 errx(1, "%s", strerror(ENOMEM));
 471                         size = ktrlen;
 472                 }
 473                 if (version == KTR_VERSION0 &&
 474                     fseek(stdin, KTR_OFFSET_V0, SEEK_CUR) < 0)
 475                         errx(1, "%s", strerror(errno));
 476                 if (ktrlen && fread_tail(m, ktrlen, 1) == 0)
 477                         errx(1, "data too short");
 478                 if (fetchprocinfo(&ktr_header, (u_int *)m) != 0)
 479                         continue;
 480                 if (pid && ktr_header.ktr_pid != pid &&
 481                     ktr_header.ktr_tid != pid)
 482                         continue;
 483                 if ((trpoints & (1<<ktr_header.ktr_type)) == 0)
 484                         continue;
 485                 sv_flags = findabi(&ktr_header);
 486                 dumpheader(&ktr_header, sv_flags);
 487                 drop_logged = 0;
 488                 switch (ktr_header.ktr_type) {
 489                 case KTR_SYSCALL:
 490                         ktrsyscall((struct ktr_syscall *)m, sv_flags);
 491                         break;
 492                 case KTR_SYSRET:
 493                         ktrsysret((struct ktr_sysret *)m, sv_flags);
 494                         break;
 495                 case KTR_NAMEI:
 496                 case KTR_SYSCTL:
 497                         ktrnamei(m, ktrlen);
 498                         break;
 499                 case KTR_GENIO:
 500                         ktrgenio((struct ktr_genio *)m, ktrlen);
 501                         break;
 502                 case KTR_PSIG:
 503                         ktrpsig((struct ktr_psig *)m);
 504                         break;
 505                 case KTR_CSW:
 506                         if (ktrlen == sizeof(struct ktr_csw_old))
 507                                 ktrcsw_old((struct ktr_csw_old *)m);
 508                         else
 509                                 ktrcsw((struct ktr_csw *)m);
 510                         break;
 511                 case KTR_USER:
 512                         ktruser(ktrlen, m);
 513                         break;
 514                 case KTR_STRUCT:
 515                         ktrstruct(m, ktrlen);
 516                         break;
 517                 case KTR_CAPFAIL:
 518                         ktrcapfail((struct ktr_cap_fail *)m);
 519                         break;
 520                 case KTR_FAULT:
 521                         ktrfault((struct ktr_fault *)m);
 522                         break;
 523                 case KTR_FAULTEND:
 524                         ktrfaultend((struct ktr_faultend *)m);
 525                         break;
 526                 case KTR_STRUCT_ARRAY:
 527                         ktrstructarray((struct ktr_struct_array *)m, ktrlen);
 528                         break;
 529                 default:
 530                         printf("\n");
 531                         break;
 532                 }
 533                 if (tail)
 534                         fflush(stdout);
 535         }
 536         return 0;
 537 }
 538
 539 int
 540 fread_tail(void *buf, int size, int num)
 541 {
 542         int i;
 543
 544         while ((i = fread(buf, size, num, stdin)) == 0 && tail) {
 545                 sleep(1);
 546                 clearerr(stdin);
 547         }
 548         return (i);
 549 }
 550
 551 int
 552 fetchprocinfo(struct ktr_header *kth, u_int *flags)
 553 {
 554         struct proc_info *pi;
 555
 556         switch (kth->ktr_type) {
 557         case KTR_PROCCTOR:
 558                 TAILQ_FOREACH(pi, &trace_procs, info) {
 559                         if (pi->pid == kth->ktr_pid) {
 560                                 TAILQ_REMOVE(&trace_procs, pi, info);
 561                                 break;
 562                         }
 563                 }
 564                 pi = malloc(sizeof(struct proc_info));
 565                 if (pi == NULL)
 566                         errx(1, "%s", strerror(ENOMEM));
 567                 pi->sv_flags = *flags;
 568                 pi->pid = kth->ktr_pid;
 569                 TAILQ_INSERT_TAIL(&trace_procs, pi, info);
 570                 return (1);
 571
 572         case KTR_PROCDTOR:
 573                 TAILQ_FOREACH(pi, &trace_procs, info) {
 574                         if (pi->pid == kth->ktr_pid) {
 575                                 TAILQ_REMOVE(&trace_procs, pi, info);
 576                                 free(pi);
 577                                 break;
 578                         }
 579                 }
 580                 return (1);
 581         }
 582
 583         return (0);
 584 }
 585
 586 u_int
 587 findabi(struct ktr_header *kth)
 588 {
 589         struct proc_info *pi;
 590
 591         TAILQ_FOREACH(pi, &trace_procs, info) {
 592                 if (pi->pid == kth->ktr_pid) {
 593                         return (pi->sv_flags);
 594                 }
 595         }
 596         return (0);
 597 }
 598
 599 void
 600 dumptimeval(struct ktr_header_v0 *kth)
 601 {
 602         static struct timeval prevtime, prevtime_e;
 603         struct timeval temp;
 604         const char *sign;
 605
 606         if (timestamp & TIMESTAMP_ABSOLUTE) {
 607                 printf("%jd.%06ld ", (intmax_t)kth->ktr_time.tv_sec,
 608                     kth->ktr_time.tv_usec);
 609         }
 610         if (timestamp & TIMESTAMP_ELAPSED) {
 611                 if (prevtime_e.tv_sec == 0)
 612                         prevtime_e = kth->ktr_time;
 613                 timersub(&kth->ktr_time, &prevtime_e, &temp);
 614                 printf("%jd.%06ld ", (intmax_t)temp.tv_sec,
 615                     temp.tv_usec);
 616         }
 617         if (timestamp & TIMESTAMP_RELATIVE) {
 618                 if (prevtime.tv_sec == 0)
 619                         prevtime = kth->ktr_time;
 620                 if (timercmp(&kth->ktr_time, &prevtime, <)) {
 621                         timersub(&prevtime, &kth->ktr_time, &temp);
 622                         sign = "-";
 623                 } else {
 624                         timersub(&kth->ktr_time, &prevtime, &temp);
 625                         sign = "";
 626                 }
 627                 prevtime = kth->ktr_time;
 628                 printf("%s%jd.%06ld ", sign, (intmax_t)temp.tv_sec,
 629                     temp.tv_usec);
 630         }
 631 }
 632
 633 void
 634 dumptimespec(struct ktr_header *kth)
 635 {
 636         static struct timespec prevtime, prevtime_e;
 637         struct timespec temp;
 638         const char *sign;
 639
 640         if (timestamp & TIMESTAMP_ABSOLUTE) {
 641                 printf("%jd.%09ld ", (intmax_t)kth->ktr_time.tv_sec,
 642                     kth->ktr_time.tv_nsec);
 643         }
 644         if (timestamp & TIMESTAMP_ELAPSED) {
 645                 if (prevtime_e.tv_sec == 0)
 646                         prevtime_e = kth->ktr_time;
 647                 timespecsub(&kth->ktr_time, &prevtime_e, &temp);
 648                 printf("%jd.%09ld ", (intmax_t)temp.tv_sec,
 649                     temp.tv_nsec);
 650         }
 651         if (timestamp & TIMESTAMP_RELATIVE) {
 652                 if (prevtime.tv_sec == 0)
 653                         prevtime = kth->ktr_time;
 654                 if (timespeccmp(&kth->ktr_time, &prevtime, <)) {
 655                         timespecsub(&prevtime, &kth->ktr_time, &temp);
 656                         sign = "-";
 657                 } else {
 658                         timespecsub(&kth->ktr_time, &prevtime, &temp);
 659                         sign = "";
 660                 }
 661                 prevtime = kth->ktr_time;
 662                 printf("%s%jd.%09ld ", sign, (intmax_t)temp.tv_sec,
 663                     temp.tv_nsec);
 664         }
 665 }
 666
 667 void
 668 dumpheader(struct ktr_header *kth, u_int sv_flags)
 669 {
 670         static char unknown[64];
 671         const char *abi;
 672         const char *arch;
 673         const char *type;
 674
 675         switch (kth->ktr_type) {
 676         case KTR_SYSCALL:
 677                 type = "CALL";
 678                 break;
 679         case KTR_SYSRET:
 680                 type = "RET ";
 681                 break;
 682         case KTR_NAMEI:
 683                 type = "NAMI";
 684                 break;
 685         case KTR_GENIO:
 686                 type = "GIO ";
 687                 break;
 688         case KTR_PSIG:
 689                 type = "PSIG";
 690                 break;
 691         case KTR_CSW:
 692                 type = "CSW ";
 693                 break;
 694         case KTR_USER:
 695                 type = "USER";
 696                 break;
 697         case KTR_STRUCT:
 698         case KTR_STRUCT_ARRAY:
 699                 type = "STRU";
 700                 break;
 701         case KTR_SYSCTL:
 702                 type = "SCTL";
 703                 break;
 704         case KTR_CAPFAIL:
 705                 type = "CAP ";
 706                 break;
 707         case KTR_FAULT:
 708                 type = "PFLT";
 709                 break;
 710         case KTR_FAULTEND:
 711                 type = "PRET";
 712                 break;
 713         default:
 714                 sprintf(unknown, "UNKNOWN(%d)", kth->ktr_type);
 715                 type = unknown;
 716         }
 717
 718         /*
 719          * The ktr_tid field was previously the ktr_buffer field, which held
 720          * the kernel pointer value for the buffer associated with data
 721          * following the record header.  It now holds a threadid, but only
 722          * for trace files after the change.  Older trace files still contain
 723          * kernel pointers.  Detect this and suppress the results by printing
 724          * negative tid's as 0.
 725          */
 726         if (threads)
 727                 printf("%6d %6d %-8.*s ", kth->ktr_pid,
 728                     kth->ktr_tid > 0 ? (lwpid_t)kth->ktr_tid : 0,
 729                     MAXCOMLEN, kth->ktr_comm);
 730         else
 731                 printf("%6d %-8.*s ", kth->ktr_pid, MAXCOMLEN, kth->ktr_comm);
 732         if (timestamp) {
 733                 if (version == KTR_VERSION0)
 734                         dumptimeval((struct ktr_header_v0 *)kth);
 735                 else
 736                         dumptimespec(kth);
 737         }
 738         if (cpuflag && version > KTR_VERSION0)
 739                 printf("%3d ", kth->ktr_cpu);
 740         printf("%s  ", type);
 741         if (abiflag != 0) {
 742                 switch (sv_flags & SV_ABI_MASK) {
 743                 case SV_ABI_LINUX:
 744                         abi = "L";
 745                         break;
 746                 case SV_ABI_FREEBSD:
 747                         abi = "F";
 748                         break;
 749                 default:
 750                         abi = "U";
 751                         break;
 752                 }
 753
 754                 if ((sv_flags & SV_LP64) != 0)
 755                         arch = "64";
 756                 else if ((sv_flags & SV_ILP32) != 0)
 757                         arch = "32";
 758                 else
 759                         arch = "00";
 760
 761                 printf("%s%s  ", abi, arch);
 762         }
 763 }
 764
 765 #include <sys/syscall.h>
 766
 767 static void
 768 ioctlname(unsigned long val)
 769 {
 770         const char *str;
 771
 772         str = sysdecode_ioctlname(val);
 773         if (str != NULL)
 774                 printf("%s", str);
 775         else if (decimal)
 776                 printf("%lu", val);
 777         else
 778                 printf("%#lx", val);
 779 }
 780
 781 static enum sysdecode_abi
 782 syscallabi(u_int sv_flags)
 783 {
 784
 785         if (sv_flags == 0)
 786                 return (SYSDECODE_ABI_FREEBSD);
 787         switch (sv_flags & SV_ABI_MASK) {
 788         case SV_ABI_FREEBSD:
 789                 return (SYSDECODE_ABI_FREEBSD);
 790         case SV_ABI_LINUX:
 791 #ifdef __LP64__
 792                 if (sv_flags & SV_ILP32)
 793                         return (SYSDECODE_ABI_LINUX32);
 794 #endif
 795                 return (SYSDECODE_ABI_LINUX);
 796         default:
 797                 return (SYSDECODE_ABI_UNKNOWN);
 798         }
 799 }
 800
 801 static void
 802 syscallname(u_int code, u_int sv_flags)
 803 {
 804         const char *name;
 805
 806         name = sysdecode_syscallname(syscallabi(sv_flags), code);
 807         if (name == NULL)
 808                 printf("[%d]", code);
 809         else {
 810                 printf("%s", name);
 811                 if (syscallno)
 812                         printf("[%d]", code);
 813         }
 814 }
 815
 816 static void
 817 print_signal(int signo)
 818 {
 819         const char *signame;
 820
 821         signame = sysdecode_signal(signo);
 822         if (signame != NULL)
 823                 printf("%s", signame);
 824         else
 825                 printf("SIG %d", signo);
 826 }
 827
 828 void
 829 ktrsyscall(struct ktr_syscall *ktr, u_int sv_flags)
 830 {
 831         int narg = ktr->ktr_narg;
 832         register_t *ip;
 833
 834         syscallname(ktr->ktr_code, sv_flags);
 835         ip = &ktr->ktr_args[0];
 836         if (narg) {
 837                 char c = '(';
 838                 if (fancy) {
 839                         switch (sv_flags & SV_ABI_MASK) {
 840                         case SV_ABI_FREEBSD:
 841                                 ktrsyscall_freebsd(ktr, &ip, &narg, &c,
 842                                     sv_flags);
 843                                 break;
 844 #ifdef SYSDECODE_HAVE_LINUX
 845                         case SV_ABI_LINUX:
 846 #ifdef __amd64__
 847                                 if (sv_flags & SV_ILP32)
 848                                         ktrsyscall_linux32(ktr, &ip,
 849                                             &narg, &c);
 850                                 else
 851 #endif
 852                                 ktrsyscall_linux(ktr, &ip, &narg, &c);
 853                                 break;
 854 #endif /* SYSDECODE_HAVE_LINUX */
 855                         }
 856                 }
 857                 while (narg > 0)
 858                         print_number(ip, narg, c);
 859                 putchar(')');
 860         }
 861         putchar('\n');
 862 }
 863
 864 void
 865 ktrsyscall_freebsd(struct ktr_syscall *ktr, register_t **resip,
 866     int *resnarg, char *resc, u_int sv_flags)
 867 {
 868         int narg = ktr->ktr_narg;
 869         register_t *ip, *first;
 870         intmax_t arg;
 871         int quad_align, quad_slots;
 872
 873         ip = first = &ktr->ktr_args[0];
 874         char c = *resc;
 875
 876                         quad_align = 0;
 877                         if (sv_flags & SV_ILP32) {
 878 #ifdef __powerpc__
 879                                 quad_align = 1;
 880 #endif
 881                                 quad_slots = 2;
 882                         } else
 883                                 quad_slots = 1;
 884                         switch (ktr->ktr_code) {
 885                         case SYS_bindat:
 886                         case SYS_chflagsat:
 887                         case SYS_connectat:
 888                         case SYS_faccessat:
 889                         case SYS_fchmodat:
 890                         case SYS_fchownat:
 891                         case SYS_fstatat:
 892                         case SYS_futimesat:
 893                         case SYS_linkat:
 894                         case SYS_mkdirat:
 895                         case SYS_mkfifoat:
 896                         case SYS_mknodat:
 897                         case SYS_openat:
 898                         case SYS_readlinkat:
 899                         case SYS_renameat:
 900                         case SYS_unlinkat:
 901                         case SYS_utimensat:
 902                                 putchar('(');
 903                                 print_integer_arg_valid(sysdecode_atfd, *ip);
 904                                 c = ',';
 905                                 ip++;
 906                                 narg--;
 907                                 break;
 908                         }
 909                         switch (ktr->ktr_code) {
 910                         case SYS_ioctl: {
 911                                 print_number(ip, narg, c);
 912                                 putchar(c);
 913                                 ioctlname(*ip);
 914                                 c = ',';
 915                                 ip++;
 916                                 narg--;
 917                                 break;
 918                         }
 919                         case SYS_ptrace:
 920                                 putchar('(');
 921                                 print_integer_arg(sysdecode_ptrace_request, *ip);
 922                                 c = ',';
 923                                 ip++;
 924                                 narg--;
 925                                 break;
 926                         case SYS_access:
 927                         case SYS_eaccess:
 928                         case SYS_faccessat:
 929                                 print_number(ip, narg, c);
 930                                 putchar(',');
 931                                 print_mask_arg(sysdecode_access_mode, *ip);
 932                                 ip++;
 933                                 narg--;
 934                                 break;
 935                         case SYS_close_range:
 936                                 print_number(ip, narg, c);
 937                                 print_number(ip, narg, c);
 938                                 putchar(',');
 939                                 print_mask_arg(sysdecode_close_range_flags, *ip);
 940                                 ip += 3;
 941                                 narg -= 3;
 942                                 break;
 943                         case SYS_open:
 944                         case SYS_openat:
 945                                 print_number(ip, narg, c);
 946                                 putchar(',');
 947                                 print_mask_arg(sysdecode_open_flags, ip[0]);
 948                                 if ((ip[0] & O_CREAT) == O_CREAT) {
 949                                         putchar(',');
 950                                         decode_filemode(ip[1]);
 951                                 }
 952                                 ip += 2;
 953                                 narg -= 2;
 954                                 break;
 955                         case SYS_wait4:
 956                                 print_number(ip, narg, c);
 957                                 print_number(ip, narg, c);
 958                                 putchar(',');
 959                                 print_mask_arg0(sysdecode_wait4_options, *ip);
 960                                 ip++;
 961                                 narg--;
 962                                 break;
 963                         case SYS_wait6:
 964                                 putchar('(');
 965                                 print_integer_arg(sysdecode_idtype, *ip);
 966                                 c = ',';
 967                                 ip++;
 968                                 narg--;
 969                                 print_number64(first, ip, narg, c);
 970                                 print_number(ip, narg, c);
 971                                 putchar(',');
 972                                 print_mask_arg(sysdecode_wait6_options, *ip);
 973                                 ip++;
 974                                 narg--;
 975                                 break;
 976                         case SYS_chmod:
 977                         case SYS_fchmod:
 978                         case SYS_lchmod:
 979                         case SYS_fchmodat:
 980                                 print_number(ip, narg, c);
 981                                 putchar(',');
 982                                 decode_filemode(*ip);
 983                                 ip++;
 984                                 narg--;
 985                                 break;
 986                         case SYS_mknodat:
 987                                 print_number(ip, narg, c);
 988                                 putchar(',');
 989                                 decode_filemode(*ip);
 990                                 ip++;
 991                                 narg--;
 992                                 break;
 993                         case SYS_getfsstat:
 994                                 print_number(ip, narg, c);
 995                                 print_number(ip, narg, c);
 996                                 putchar(',');
 997                                 print_integer_arg(sysdecode_getfsstat_mode, *ip);
 998                                 ip++;
 999                                 narg--;
1000                                 break;
1001                         case SYS_mount:
1002                                 print_number(ip, narg, c);
1003                                 print_number(ip, narg, c);
1004                                 putchar(',');
1005                                 print_mask_arg(sysdecode_mount_flags, *ip);
1006                                 ip++;
1007                                 narg--;
1008                                 break;
1009                         case SYS_unmount:
1010                                 print_number(ip, narg, c);
1011                                 putchar(',');
1012                                 print_mask_arg(sysdecode_mount_flags, *ip);
1013                                 ip++;
1014                                 narg--;
1015                                 break;
1016                         case SYS_recvmsg:
1017                         case SYS_sendmsg:
1018                                 print_number(ip, narg, c);
1019                                 print_number(ip, narg, c);
1020                                 putchar(',');
1021                                 print_mask_arg0(sysdecode_msg_flags, *ip);
1022                                 ip++;
1023                                 narg--;
1024                                 break;
1025                         case SYS_recvfrom:
1026                         case SYS_sendto:
1027                                 print_number(ip, narg, c);
1028                                 print_number(ip, narg, c);
1029                                 print_number(ip, narg, c);
1030                                 putchar(',');
1031                                 print_mask_arg0(sysdecode_msg_flags, *ip);
1032                                 ip++;
1033                                 narg--;
1034                                 break;
1035                         case SYS_chflags:
1036                         case SYS_chflagsat:
1037                         case SYS_fchflags:
1038                         case SYS_lchflags:
1039                                 print_number(ip, narg, c);
1040                                 putchar(',');
1041                                 decode_fileflags(*ip);
1042                                 ip++;
1043                                 narg--;
1044                                 break;
1045                         case SYS_kill:
1046                                 print_number(ip, narg, c);
1047                                 putchar(',');
1048                                 print_signal(*ip);
1049                                 ip++;
1050                                 narg--;
1051                                 break;
1052                         case SYS_reboot:
1053                                 putchar('(');
1054                                 print_mask_arg(sysdecode_reboot_howto, *ip);
1055                                 ip++;
1056                                 narg--;
1057                                 break;
1058                         case SYS_umask:
1059                                 putchar('(');
1060                                 decode_filemode(*ip);
1061                                 ip++;
1062                                 narg--;
1063                                 break;
1064                         case SYS_msync:
1065                                 print_number(ip, narg, c);
1066                                 print_number(ip, narg, c);
1067                                 putchar(',');
1068                                 print_mask_arg(sysdecode_msync_flags, *ip);
1069                                 ip++;
1070                                 narg--;
1071                                 break;
1072 #ifdef SYS_freebsd6_mmap
1073                         case SYS_freebsd6_mmap:
1074                                 print_number(ip, narg, c);
1075                                 print_number(ip, narg, c);
1076                                 putchar(',');
1077                                 print_mask_arg(sysdecode_mmap_prot, *ip);
1078                                 putchar(',');
1079                                 ip++;
1080                                 narg--;
1081                                 print_mask_arg(sysdecode_mmap_flags, *ip);
1082                                 ip++;
1083                                 narg--;
1084                                 break;
1085 #endif
1086                         case SYS_mmap:
1087                                 print_number(ip, narg, c);
1088                                 print_number(ip, narg, c);
1089                                 putchar(',');
1090                                 print_mask_arg(sysdecode_mmap_prot, *ip);
1091                                 putchar(',');
1092                                 ip++;
1093                                 narg--;
1094                                 print_mask_arg(sysdecode_mmap_flags, *ip);
1095                                 ip++;
1096                                 narg--;
1097                                 break;
1098                         case SYS_mprotect:
1099                                 print_number(ip, narg, c);
1100                                 print_number(ip, narg, c);
1101                                 putchar(',');
1102                                 print_mask_arg(sysdecode_mmap_prot, *ip);
1103                                 ip++;
1104                                 narg--;
1105                                 break;
1106                         case SYS_madvise:
1107                                 print_number(ip, narg, c);
1108                                 print_number(ip, narg, c);
1109                                 putchar(',');
1110                                 print_integer_arg(sysdecode_madvice, *ip);
1111                                 ip++;
1112                                 narg--;
1113                                 break;
1114                         case SYS_pathconf:
1115                         case SYS_lpathconf:
1116                         case SYS_fpathconf:
1117                                 print_number(ip, narg, c);
1118                                 putchar(',');
1119                                 print_integer_arg(sysdecode_pathconf_name, *ip);
1120                                 ip++;
1121                                 narg--;
1122                                 break;
1123                         case SYS_getpriority:
1124                         case SYS_setpriority:
1125                                 putchar('(');
1126                                 print_integer_arg(sysdecode_prio_which, *ip);
1127                                 c = ',';
1128                                 ip++;
1129                                 narg--;
1130                                 break;
1131                         case SYS_fcntl:
1132                                 print_number(ip, narg, c);
1133                                 putchar(',');
1134                                 print_integer_arg(sysdecode_fcntl_cmd, ip[0]);
1135                                 if (sysdecode_fcntl_arg_p(ip[0])) {
1136                                         putchar(',');
1137                                         if (ip[0] == F_SETFL)
1138                                                 print_mask_arg(
1139                                                     sysdecode_fcntl_fileflags,
1140                                                         ip[1]);
1141                                         else
1142                                                 sysdecode_fcntl_arg(stdout,
1143                                                     ip[0], ip[1],
1144                                                     decimal ? 10 : 16);
1145                                 }
1146                                 ip += 2;
1147                                 narg -= 2;
1148                                 break;
1149                         case SYS_socket: {
1150                                 int sockdomain;
1151                                 putchar('(');
1152                                 sockdomain = *ip;
1153                                 print_integer_arg(sysdecode_socketdomain,
1154                                     sockdomain);
1155                                 ip++;
1156                                 narg--;
1157                                 putchar(',');
1158                                 print_mask_arg(sysdecode_socket_type, *ip);
1159                                 ip++;
1160                                 narg--;
1161                                 if (sockdomain == PF_INET ||
1162                                     sockdomain == PF_INET6) {
1163                                         putchar(',');
1164                                         print_integer_arg(sysdecode_ipproto,
1165                                             *ip);
1166                                         ip++;
1167                                         narg--;
1168                                 }
1169                                 c = ',';
1170                                 break;
1171                         }
1172                         case SYS_setsockopt:
1173                         case SYS_getsockopt: {
1174                                 const char *str;
1175
1176                                 print_number(ip, narg, c);
1177                                 putchar(',');
1178                                 print_integer_arg_valid(sysdecode_sockopt_level,
1179                                     *ip);
1180                                 str = sysdecode_sockopt_name(ip[0], ip[1]);
1181                                 if (str != NULL) {
1182                                         printf(",%s", str);
1183                                         ip++;
1184                                         narg--;
1185                                 }
1186                                 ip++;
1187                                 narg--;
1188                                 break;
1189                         }
1190 #ifdef SYS_freebsd6_lseek
1191                         case SYS_freebsd6_lseek:
1192                                 print_number(ip, narg, c);
1193                                 /* Hidden 'pad' argument, not in lseek(2) */
1194                                 print_number(ip, narg, c);
1195                                 print_number64(first, ip, narg, c);
1196                                 putchar(',');
1197                                 print_integer_arg(sysdecode_whence, *ip);
1198                                 ip++;
1199                                 narg--;
1200                                 break;
1201 #endif
1202                         case SYS_lseek:
1203                                 print_number(ip, narg, c);
1204                                 print_number64(first, ip, narg, c);
1205                                 putchar(',');
1206                                 print_integer_arg(sysdecode_whence, *ip);
1207                                 ip++;
1208                                 narg--;
1209                                 break;
1210                         case SYS_flock:
1211                                 print_number(ip, narg, c);
1212                                 putchar(',');
1213                                 print_mask_arg(sysdecode_flock_operation, *ip);
1214                                 ip++;
1215                                 narg--;
1216                                 break;
1217                         case SYS_mkfifo:
1218                         case SYS_mkfifoat:
1219                         case SYS_mkdir:
1220                         case SYS_mkdirat:
1221                                 print_number(ip, narg, c);
1222                                 putchar(',');
1223                                 decode_filemode(*ip);
1224                                 ip++;
1225                                 narg--;
1226                                 break;
1227                         case SYS_shutdown:
1228                                 print_number(ip, narg, c);
1229                                 putchar(',');
1230                                 print_integer_arg(sysdecode_shutdown_how, *ip);
1231                                 ip++;
1232                                 narg--;
1233                                 break;
1234                         case SYS_socketpair:
1235                                 putchar('(');
1236                                 print_integer_arg(sysdecode_socketdomain, *ip);
1237                                 ip++;
1238                                 narg--;
1239                                 putchar(',');
1240                                 print_mask_arg(sysdecode_socket_type, *ip);
1241                                 ip++;
1242                                 narg--;
1243                                 c = ',';
1244                                 break;
1245                         case SYS_getrlimit:
1246                         case SYS_setrlimit:
1247                                 putchar('(');
1248                                 print_integer_arg(sysdecode_rlimit, *ip);
1249                                 ip++;
1250                                 narg--;
1251                                 c = ',';
1252                                 break;
1253                         case SYS_getrusage:
1254                                 putchar('(');
1255                                 print_integer_arg(sysdecode_getrusage_who, *ip);
1256                                 ip++;
1257                                 narg--;
1258                                 c = ',';
1259                                 break;
1260                         case SYS_quotactl:
1261                                 print_number(ip, narg, c);
1262                                 putchar(',');
1263                                 if (!sysdecode_quotactl_cmd(stdout, *ip)) {
1264                                         if (decimal)
1265                                                 printf("<invalid=%d>", (int)*ip);
1266                                         else
1267                                                 printf("<invalid=%#x>",
1268                                                     (int)*ip);
1269                                 }
1270                                 ip++;
1271                                 narg--;
1272                                 c = ',';
1273                                 break;
1274                         case SYS_nfssvc:
1275                                 putchar('(');
1276                                 print_integer_arg(sysdecode_nfssvc_flags, *ip);
1277                                 ip++;
1278                                 narg--;
1279                                 c = ',';
1280                                 break;
1281                         case SYS_rtprio:
1282                         case SYS_rtprio_thread:
1283                                 putchar('(');
1284                                 print_integer_arg(sysdecode_rtprio_function,
1285                                     *ip);
1286                                 ip++;
1287                                 narg--;
1288                                 c = ',';
1289                                 break;
1290                         case SYS___semctl:
1291                                 print_number(ip, narg, c);
1292                                 print_number(ip, narg, c);
1293                                 putchar(',');
1294                                 print_integer_arg(sysdecode_semctl_cmd, *ip);
1295                                 ip++;
1296                                 narg--;
1297                                 break;
1298                         case SYS_semget:
1299                                 print_number(ip, narg, c);
1300                                 print_number(ip, narg, c);
1301                                 putchar(',');
1302                                 print_mask_arg(sysdecode_semget_flags, *ip);
1303                                 ip++;
1304                                 narg--;
1305                                 break;
1306                         case SYS_msgctl:
1307                                 print_number(ip, narg, c);
1308                                 putchar(',');
1309                                 print_integer_arg(sysdecode_msgctl_cmd, *ip);
1310                                 ip++;
1311                                 narg--;
1312                                 break;
1313                         case SYS_shmat:
1314                                 print_number(ip, narg, c);
1315                                 print_number(ip, narg, c);
1316                                 putchar(',');
1317                                 print_mask_arg(sysdecode_shmat_flags, *ip);
1318                                 ip++;
1319                                 narg--;
1320                                 break;
1321                         case SYS_shmctl:
1322                                 print_number(ip, narg, c);
1323                                 putchar(',');
1324                                 print_integer_arg(sysdecode_shmctl_cmd, *ip);
1325                                 ip++;
1326                                 narg--;
1327                                 break;
1328 #ifdef SYS_freebsd12_shm_open
1329                         case SYS_freebsd12_shm_open:
1330                                 if (ip[0] == (uintptr_t)SHM_ANON) {
1331                                         printf("(SHM_ANON");
1332                                         ip++;
1333                                 } else {
1334                                         print_number(ip, narg, c);
1335                                 }
1336                                 putchar(',');
1337                                 print_mask_arg(sysdecode_open_flags, ip[0]);
1338                                 putchar(',');
1339                                 decode_filemode(ip[1]);
1340                                 ip += 2;
1341                                 narg -= 2;
1342                                 break;
1343 #endif
1344                         case SYS_shm_open2:
1345                                 if (ip[0] == (uintptr_t)SHM_ANON) {
1346                                         printf("(SHM_ANON");
1347                                         ip++;
1348                                 } else {
1349                                         print_number(ip, narg, c);
1350                                 }
1351                                 putchar(',');
1352                                 print_mask_arg(sysdecode_open_flags, ip[0]);
1353                                 putchar(',');
1354                                 decode_filemode(ip[1]);
1355                                 putchar(',');
1356                                 print_mask_arg(sysdecode_shmflags, ip[2]);
1357                                 ip += 3;
1358                                 narg -= 3;
1359                                 break;
1360                         case SYS_minherit:
1361                                 print_number(ip, narg, c);
1362                                 print_number(ip, narg, c);
1363                                 putchar(',');
1364                                 print_integer_arg(sysdecode_minherit_inherit,
1365                                     *ip);
1366                                 ip++;
1367                                 narg--;
1368                                 break;
1369                         case SYS_rfork:
1370                                 putchar('(');
1371                                 print_mask_arg(sysdecode_rfork_flags, *ip);
1372                                 ip++;
1373                                 narg--;
1374                                 c = ',';
1375                                 break;
1376                         case SYS_lio_listio:
1377                                 putchar('(');
1378                                 print_integer_arg(sysdecode_lio_listio_mode,
1379                                     *ip);
1380                                 ip++;
1381                                 narg--;
1382                                 c = ',';
1383                                 break;
1384                         case SYS_mlockall:
1385                                 putchar('(');
1386                                 print_mask_arg(sysdecode_mlockall_flags, *ip);
1387                                 ip++;
1388                                 narg--;
1389                                 break;
1390                         case SYS_sched_setscheduler:
1391                                 print_number(ip, narg, c);
1392                                 putchar(',');
1393                                 print_integer_arg(sysdecode_scheduler_policy,
1394                                     *ip);
1395                                 ip++;
1396                                 narg--;
1397                                 break;
1398                         case SYS_sched_get_priority_max:
1399                         case SYS_sched_get_priority_min:
1400                                 putchar('(');
1401                                 print_integer_arg(sysdecode_scheduler_policy,
1402                                     *ip);
1403                                 ip++;
1404                                 narg--;
1405                                 break;
1406                         case SYS_sendfile:
1407                                 print_number(ip, narg, c);
1408                                 print_number(ip, narg, c);
1409                                 print_number(ip, narg, c);
1410                                 print_number(ip, narg, c);
1411                                 print_number(ip, narg, c);
1412                                 print_number(ip, narg, c);
1413                                 putchar(',');
1414                                 print_mask_arg(sysdecode_sendfile_flags, *ip);
1415                                 ip++;
1416                                 narg--;
1417                                 break;
1418                         case SYS_kldsym:
1419                                 print_number(ip, narg, c);
1420                                 putchar(',');
1421                                 print_integer_arg(sysdecode_kldsym_cmd, *ip);
1422                                 ip++;
1423                                 narg--;
1424                                 break;
1425                         case SYS_sigprocmask:
1426                                 putchar('(');
1427                                 print_integer_arg(sysdecode_sigprocmask_how,
1428                                     *ip);
1429                                 ip++;
1430                                 narg--;
1431                                 c = ',';
1432                                 break;
1433                         case SYS___acl_get_file:
1434                         case SYS___acl_set_file:
1435                         case SYS___acl_get_fd:
1436                         case SYS___acl_set_fd:
1437                         case SYS___acl_delete_file:
1438                         case SYS___acl_delete_fd:
1439                         case SYS___acl_aclcheck_file:
1440                         case SYS___acl_aclcheck_fd:
1441                         case SYS___acl_get_link:
1442                         case SYS___acl_set_link:
1443                         case SYS___acl_delete_link:
1444                         case SYS___acl_aclcheck_link:
1445                                 print_number(ip, narg, c);
1446                                 putchar(',');
1447                                 print_integer_arg(sysdecode_acltype, *ip);
1448                                 ip++;
1449                                 narg--;
1450                                 break;
1451                         case SYS_sigaction:
1452                                 putchar('(');
1453                                 print_signal(*ip);
1454                                 ip++;
1455                                 narg--;
1456                                 c = ',';
1457                                 break;
1458                         case SYS_extattrctl:
1459                                 print_number(ip, narg, c);
1460                                 putchar(',');
1461                                 print_integer_arg(sysdecode_extattrnamespace,
1462                                     *ip);
1463                                 ip++;
1464                                 narg--;
1465                                 break;
1466                         case SYS_nmount:
1467                                 print_number(ip, narg, c);
1468                                 print_number(ip, narg, c);
1469                                 putchar(',');
1470                                 print_mask_arg(sysdecode_mount_flags, *ip);
1471                                 ip++;
1472                                 narg--;
1473                                 break;
1474                         case SYS_thr_create:
1475                                 print_number(ip, narg, c);
1476                                 print_number(ip, narg, c);
1477                                 putchar(',');
1478                                 print_mask_arg(sysdecode_thr_create_flags, *ip);
1479                                 ip++;
1480                                 narg--;
1481                                 break;
1482                         case SYS_thr_kill:
1483                                 print_number(ip, narg, c);
1484                                 putchar(',');
1485                                 print_signal(*ip);
1486                                 ip++;
1487                                 narg--;
1488                                 break;
1489                         case SYS_kldunloadf:
1490                                 print_number(ip, narg, c);
1491                                 putchar(',');
1492                                 print_integer_arg(sysdecode_kldunload_flags,
1493                                     *ip);
1494                                 ip++;
1495                                 narg--;
1496                                 break;
1497                         case SYS_linkat:
1498                         case SYS_renameat:
1499                         case SYS_symlinkat:
1500                                 print_number(ip, narg, c);
1501                                 putchar(',');
1502                                 print_integer_arg_valid(sysdecode_atfd, *ip);
1503                                 ip++;
1504                                 narg--;
1505                                 print_number(ip, narg, c);
1506                                 break;
1507                         case SYS_cap_fcntls_limit:
1508                                 print_number(ip, narg, c);
1509                                 putchar(',');
1510                                 arg = *ip;
1511                                 ip++;
1512                                 narg--;
1513                                 print_mask_arg32(sysdecode_cap_fcntlrights, arg);
1514                                 break;
1515                         case SYS_posix_fadvise:
1516                                 print_number(ip, narg, c);
1517                                 print_number(ip, narg, c);
1518                                 print_number(ip, narg, c);
1519                                 (void)putchar(',');
1520                                 print_integer_arg(sysdecode_fadvice, *ip);
1521                                 ip++;
1522                                 narg--;
1523                                 break;
1524                         case SYS_procctl:
1525                                 putchar('(');
1526                                 print_integer_arg(sysdecode_idtype, *ip);
1527                                 c = ',';
1528                                 ip++;
1529                                 narg--;
1530                                 print_number64(first, ip, narg, c);
1531                                 putchar(',');
1532                                 print_integer_arg(sysdecode_procctl_cmd, *ip);
1533                                 ip++;
1534                                 narg--;
1535                                 break;
1536                         case SYS__umtx_op: {
1537                                 int op;
1538
1539                                 print_number(ip, narg, c);
1540                                 putchar(',');
1541                                 if (print_mask_arg_part(sysdecode_umtx_op_flags,
1542                                     *ip, &op))
1543                                         putchar('|');
1544                                 print_integer_arg(sysdecode_umtx_op, op);
1545                                 putchar('>');
1546                                 switch (*ip) {
1547                                 case UMTX_OP_CV_WAIT:
1548                                         ip++;
1549                                         narg--;
1550                                         putchar(',');
1551                                         print_mask_argul(
1552                                             sysdecode_umtx_cvwait_flags, *ip);
1553                                         break;
1554                                 case UMTX_OP_RW_RDLOCK:
1555                                         ip++;
1556                                         narg--;
1557                                         putchar(',');
1558                                         print_mask_argul(
1559                                             sysdecode_umtx_rwlock_flags, *ip);
1560                                         break;
1561                                 }
1562                                 ip++;
1563                                 narg--;
1564                                 break;
1565                         }
1566                         case SYS_ftruncate:
1567                         case SYS_truncate:
1568                                 print_number(ip, narg, c);
1569                                 print_number64(first, ip, narg, c);
1570                                 break;
1571                         case SYS_fchownat:
1572                                 print_number(ip, narg, c);
1573                                 print_number(ip, narg, c);
1574                                 print_number(ip, narg, c);
1575                                 break;
1576                         case SYS_fstatat:
1577                         case SYS_utimensat:
1578                                 print_number(ip, narg, c);
1579                                 print_number(ip, narg, c);
1580                                 break;
1581                         case SYS_unlinkat:
1582                                 print_number(ip, narg, c);
1583                                 break;
1584                         case SYS_sysarch:
1585                                 putchar('(');
1586                                 print_integer_arg(sysdecode_sysarch_number, *ip);
1587                                 ip++;
1588                                 narg--;
1589                                 c = ',';
1590                                 break;
1591                         case SYS_getitimer:
1592                         case SYS_setitimer:
1593                                 putchar('(');
1594                                 print_integer_arg(sysdecode_itimer, *ip);
1595                                 ip++;
1596                                 narg--;
1597                                 c = ',';
1598                                 break;
1599                         }
1600                         switch (ktr->ktr_code) {
1601                         case SYS_chflagsat:
1602                         case SYS_fchownat:
1603                         case SYS_faccessat:
1604                         case SYS_fchmodat:
1605                         case SYS_fstatat:
1606                         case SYS_linkat:
1607                         case SYS_unlinkat:
1608                         case SYS_utimensat:
1609                                 putchar(',');
1610                                 print_mask_arg0(sysdecode_atflags, *ip);
1611                                 ip++;
1612                                 narg--;
1613                                 break;
1614                         }
1615         *resc = c;
1616         *resip = ip;
1617         *resnarg = narg;
1618 }
1619
1620 void
1621 ktrsysret(struct ktr_sysret *ktr, u_int sv_flags)
1622 {
1623         register_t ret = ktr->ktr_retval;
1624         int error = ktr->ktr_error;
1625
1626         syscallname(ktr->ktr_code, sv_flags);
1627         printf(" ");
1628
1629         if (error == 0) {
1630                 if (fancy) {
1631                         printf("%ld", (long)ret);
1632                         if (ret < 0 || ret > 9)
1633                                 printf("/%#lx", (unsigned long)ret);
1634                 } else {
1635                         if (decimal)
1636                                 printf("%ld", (long)ret);
1637                         else
1638                                 printf("%#lx", (unsigned long)ret);
1639                 }
1640         } else if (error == ERESTART)
1641                 printf("RESTART");
1642         else if (error == EJUSTRETURN)
1643                 printf("JUSTRETURN");
1644         else {
1645                 printf("-1 errno %d", sysdecode_freebsd_to_abi_errno(
1646                     syscallabi(sv_flags), error));
1647                 if (fancy)
1648                         printf(" %s", strerror(ktr->ktr_error));
1649         }
1650         putchar('\n');
1651 }
1652
1653 void
1654 ktrnamei(char *cp, int len)
1655 {
1656         printf("\"%.*s\"\n", len, cp);
1657 }
1658
1659 void
1660 hexdump(char *p, int len, int screenwidth)
1661 {
1662         int n, i;
1663         int width;
1664
1665         width = 0;
1666         do {
1667                 width += 2;
1668                 i = 13;                 /* base offset */
1669                 i += (width / 2) + 1;   /* spaces every second byte */
1670                 i += (width * 2);       /* width of bytes */
1671                 i += 3;                 /* "  |" */
1672                 i += width;             /* each byte */
1673                 i += 1;                 /* "|" */
1674         } while (i < screenwidth);
1675         width -= 2;
1676
1677         for (n = 0; n < len; n += width) {
1678                 for (i = n; i < n + width; i++) {
1679                         if ((i % width) == 0) { /* beginning of line */
1680                                 printf("       0x%04x", i);
1681                         }
1682                         if ((i % 2) == 0) {
1683                                 printf(" ");
1684                         }
1685                         if (i < len)
1686                                 printf("%02x", p[i] & 0xff);
1687                         else
1688                                 printf("  ");
1689                 }
1690                 printf("  |");
1691                 for (i = n; i < n + width; i++) {
1692                         if (i >= len)
1693                                 break;
1694                         if (p[i] >= ' ' && p[i] <= '~')
1695                                 printf("%c", p[i]);
1696                         else
1697                                 printf(".");
1698                 }
1699                 printf("|\n");
1700         }
1701         if ((i % width) != 0)
1702                 printf("\n");
1703 }
1704
1705 void
1706 visdump(char *dp, int datalen, int screenwidth)
1707 {
1708         int col = 0;
1709         char *cp;
1710         int width;
1711         char visbuf[5];
1712
1713         printf("       \"");
1714         col = 8;
1715         for (;datalen > 0; datalen--, dp++) {
1716                 vis(visbuf, *dp, VIS_CSTYLE | VIS_NOLOCALE, *(dp+1));
1717                 cp = visbuf;
1718                 /*
1719                  * Keep track of printables and
1720                  * space chars (like fold(1)).
1721                  */
1722                 if (col == 0) {
1723                         putchar('\t');
1724                         col = 8;
1725                 }
1726                 switch(*cp) {
1727                 case '\n':
1728                         col = 0;
1729                         putchar('\n');
1730                         continue;
1731                 case '\t':
1732                         width = 8 - (col&07);
1733                         break;
1734                 default:
1735                         width = strlen(cp);
1736                 }
1737                 if (col + width > (screenwidth-2)) {
1738                         printf("\\\n\t");
1739                         col = 8;
1740                 }
1741                 col += width;
1742                 do {
1743                         putchar(*cp++);
1744                 } while (*cp);
1745         }
1746         if (col == 0)
1747                 printf("       ");
1748         printf("\"\n");
1749 }
1750
1751 void
1752 ktrgenio(struct ktr_genio *ktr, int len)
1753 {
1754         int datalen = len - sizeof (struct ktr_genio);
1755         char *dp = (char *)ktr + sizeof (struct ktr_genio);
1756         static int screenwidth = 0;
1757         int i, binary;
1758
1759         printf("fd %d %s %d byte%s\n", ktr->ktr_fd,
1760                 ktr->ktr_rw == UIO_READ ? "read" : "wrote", datalen,
1761                 datalen == 1 ? "" : "s");
1762         if (suppressdata)
1763                 return;
1764         if (screenwidth == 0) {
1765                 struct winsize ws;
1766
1767                 if (fancy && ioctl(fileno(stderr), TIOCGWINSZ, &ws) != -1 &&
1768                     ws.ws_col > 8)
1769                         screenwidth = ws.ws_col;
1770                 else
1771                         screenwidth = 80;
1772         }
1773         if (maxdata && datalen > maxdata)
1774                 datalen = maxdata;
1775
1776         for (i = 0, binary = 0; i < datalen && binary == 0; i++)  {
1777                 if (dp[i] >= 32 && dp[i] < 127)
1778                         continue;
1779                 if (dp[i] == 10 || dp[i] == 13 || dp[i] == 0 || dp[i] == 9)
1780                         continue;
1781                 binary = 1;
1782         }
1783         if (binary)
1784                 hexdump(dp, datalen, screenwidth);
1785         else
1786                 visdump(dp, datalen, screenwidth);
1787 }
1788
1789 void
1790 ktrpsig(struct ktr_psig *psig)
1791 {
1792         const char *str;
1793
1794         print_signal(psig->signo);
1795         if (psig->action == SIG_DFL) {
1796                 printf(" SIG_DFL");
1797         } else {
1798                 printf(" caught handler=0x%lx mask=0x%x",
1799                     (u_long)psig->action, psig->mask.__bits[0]);
1800         }
1801         printf(" code=");
1802         str = sysdecode_sigcode(psig->signo, psig->code);
1803         if (str != NULL)
1804                 printf("%s", str);
1805         else
1806                 printf("<invalid=%#x>", psig->code);
1807         putchar('\n');
1808 }
1809
1810 void
1811 ktrcsw_old(struct ktr_csw_old *cs)
1812 {
1813         printf("%s %s\n", cs->out ? "stop" : "resume",
1814                 cs->user ? "user" : "kernel");
1815 }
1816
1817 void
1818 ktrcsw(struct ktr_csw *cs)
1819 {
1820         printf("%s %s \"%s\"\n", cs->out ? "stop" : "resume",
1821             cs->user ? "user" : "kernel", cs->wmesg);
1822 }
1823
1824 void
1825 ktruser(int len, void *p)
1826 {
1827         unsigned char *cp;
1828
1829         if (sysdecode_utrace(stdout, p, len)) {
1830                 printf("\n");
1831                 return;
1832         }
1833
1834         printf("%d ", len);
1835         cp = p;
1836         while (len--)
1837                 if (decimal)
1838                         printf(" %d", *cp++);
1839                 else
1840                         printf(" %02x", *cp++);
1841         printf("\n");
1842 }
1843
1844 void
1845 ktrcaprights(cap_rights_t *rightsp)
1846 {
1847
1848         printf("cap_rights_t ");
1849         sysdecode_cap_rights(stdout, rightsp);
1850         printf("\n");
1851 }
1852
1853 static void
1854 ktrtimeval(struct timeval *tv)
1855 {
1856
1857         printf("{%ld, %ld}", (long)tv->tv_sec, tv->tv_usec);
1858 }
1859
1860 void
1861 ktritimerval(struct itimerval *it)
1862 {
1863
1864         printf("itimerval { .interval = ");
1865         ktrtimeval(&it->it_interval);
1866         printf(", .value = ");
1867         ktrtimeval(&it->it_value);
1868         printf(" }\n");
1869 }
1870
1871 void
1872 ktrsockaddr(struct sockaddr *sa)
1873 {
1874 /*
1875  TODO: Support additional address families
1876         #include <netsmb/netbios.h>
1877         struct sockaddr_nb      *nb;
1878 */
1879         const char *str;
1880         char addr[64];
1881
1882         /*
1883          * note: ktrstruct() has already verified that sa points to a
1884          * buffer at least sizeof(struct sockaddr) bytes long and exactly
1885          * sa->sa_len bytes long.
1886          */
1887         printf("struct sockaddr { ");
1888         str = sysdecode_sockaddr_family(sa->sa_family);
1889         if (str != NULL)
1890                 printf("%s", str);
1891         else
1892                 printf("<invalid=%d>", sa->sa_family);
1893         printf(", ");
1894
1895 #define check_sockaddr_len(n)                                   \
1896         if (sa_##n.s##n##_len < sizeof(struct sockaddr_##n)) {  \
1897                 printf("invalid");                              \
1898                 break;                                          \
1899         }
1900
1901         switch(sa->sa_family) {
1902         case AF_INET: {
1903                 struct sockaddr_in sa_in;
1904
1905                 memset(&sa_in, 0, sizeof(sa_in));
1906                 memcpy(&sa_in, sa, sa->sa_len);
1907                 check_sockaddr_len(in);
1908                 inet_ntop(AF_INET, &sa_in.sin_addr, addr, sizeof addr);
1909                 printf("%s:%u", addr, ntohs(sa_in.sin_port));
1910                 break;
1911         }
1912         case AF_INET6: {
1913                 struct sockaddr_in6 sa_in6;
1914
1915                 memset(&sa_in6, 0, sizeof(sa_in6));
1916                 memcpy(&sa_in6, sa, sa->sa_len);
1917                 check_sockaddr_len(in6);
1918                 getnameinfo((struct sockaddr *)&sa_in6, sizeof(sa_in6),
1919                     addr, sizeof(addr), NULL, 0, NI_NUMERICHOST);
1920                 printf("[%s]:%u", addr, htons(sa_in6.sin6_port));
1921                 break;
1922         }
1923         case AF_UNIX: {
1924                 struct sockaddr_un sa_un;
1925
1926                 memset(&sa_un, 0, sizeof(sa_un));
1927                 memcpy(&sa_un, sa, sa->sa_len);
1928                 printf("%.*s", (int)sizeof(sa_un.sun_path), sa_un.sun_path);
1929                 break;
1930         }
1931         default:
1932                 printf("unknown address family");
1933         }
1934         printf(" }\n");
1935 }
1936
1937 void
1938 ktrstat(struct stat *statp)
1939 {
1940         char mode[12], timestr[PATH_MAX + 4];
1941         struct passwd *pwd;
1942         struct group  *grp;
1943         struct tm *tm;
1944
1945         /*
1946          * note: ktrstruct() has already verified that statp points to a
1947          * buffer exactly sizeof(struct stat) bytes long.
1948          */
1949         printf("struct stat {");
1950         printf("dev=%ju, ino=%ju, ",
1951                 (uintmax_t)statp->st_dev, (uintmax_t)statp->st_ino);
1952         if (!resolv)
1953                 printf("mode=0%jo, ", (uintmax_t)statp->st_mode);
1954         else {
1955                 strmode(statp->st_mode, mode);
1956                 printf("mode=%s, ", mode);
1957         }
1958         printf("nlink=%ju, ", (uintmax_t)statp->st_nlink);
1959         if (!resolv) {
1960                 pwd = NULL;
1961         } else {
1962 #ifdef WITH_CASPER
1963                 if (cappwd != NULL)
1964                         pwd = cap_getpwuid(cappwd, statp->st_uid);
1965                 else
1966 #endif
1967                         pwd = getpwuid(statp->st_uid);
1968         }
1969         if (pwd == NULL)
1970                 printf("uid=%ju, ", (uintmax_t)statp->st_uid);
1971         else
1972                 printf("uid=\"%s\", ", pwd->pw_name);
1973         if (!resolv) {
1974                 grp = NULL;
1975         } else {
1976 #ifdef WITH_CASPER
1977                 if (capgrp != NULL)
1978                         grp = cap_getgrgid(capgrp, statp->st_gid);
1979                 else
1980 #endif
1981                         grp = getgrgid(statp->st_gid);
1982         }
1983         if (grp == NULL)
1984                 printf("gid=%ju, ", (uintmax_t)statp->st_gid);
1985         else
1986                 printf("gid=\"%s\", ", grp->gr_name);
1987         printf("rdev=%ju, ", (uintmax_t)statp->st_rdev);
1988         printf("atime=");
1989         if (!resolv)
1990                 printf("%jd", (intmax_t)statp->st_atim.tv_sec);
1991         else {
1992                 tm = localtime(&statp->st_atim.tv_sec);
1993                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1994                 printf("\"%s\"", timestr);
1995         }
1996         if (statp->st_atim.tv_nsec != 0)
1997                 printf(".%09ld, ", statp->st_atim.tv_nsec);
1998         else
1999                 printf(", ");
2000         printf("mtime=");
2001         if (!resolv)
2002                 printf("%jd", (intmax_t)statp->st_mtim.tv_sec);
2003         else {
2004                 tm = localtime(&statp->st_mtim.tv_sec);
2005                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
2006                 printf("\"%s\"", timestr);
2007         }
2008         if (statp->st_mtim.tv_nsec != 0)
2009                 printf(".%09ld, ", statp->st_mtim.tv_nsec);
2010         else
2011                 printf(", ");
2012         printf("ctime=");
2013         if (!resolv)
2014                 printf("%jd", (intmax_t)statp->st_ctim.tv_sec);
2015         else {
2016                 tm = localtime(&statp->st_ctim.tv_sec);
2017                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
2018                 printf("\"%s\"", timestr);
2019         }
2020         if (statp->st_ctim.tv_nsec != 0)
2021                 printf(".%09ld, ", statp->st_ctim.tv_nsec);
2022         else
2023                 printf(", ");
2024         printf("birthtime=");
2025         if (!resolv)
2026                 printf("%jd", (intmax_t)statp->st_birthtim.tv_sec);
2027         else {
2028                 tm = localtime(&statp->st_birthtim.tv_sec);
2029                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
2030                 printf("\"%s\"", timestr);
2031         }
2032         if (statp->st_birthtim.tv_nsec != 0)
2033                 printf(".%09ld, ", statp->st_birthtim.tv_nsec);
2034         else
2035                 printf(", ");
2036         printf("size=%jd, blksize=%ju, blocks=%jd, flags=0x%x",
2037                 (uintmax_t)statp->st_size, (uintmax_t)statp->st_blksize,
2038                 (intmax_t)statp->st_blocks, statp->st_flags);
2039         printf(" }\n");
2040 }
2041
2042 void
2043 ktrbitset(char *name, struct bitset *set, size_t setlen)
2044 {
2045         int i, maxi, c = 0;
2046
2047         if (setlen > INT32_MAX)
2048                 setlen = INT32_MAX;
2049         maxi = setlen * CHAR_BIT;
2050         printf("%s [ ", name);
2051         for (i = 0; i < maxi; i++) {
2052                 if (!BIT_ISSET(setlen, i, set))
2053                         continue;
2054                 if (c == 0)
2055                         printf("%d", i);
2056                 else
2057                         printf(", %d", i);
2058                 c++;
2059         }
2060         if (c == 0)
2061                 printf(" empty ]\n");
2062         else
2063                 printf(" ]\n");
2064 }
2065
2066 void
2067 ktrstruct(char *buf, size_t buflen)
2068 {
2069         char *name, *data;
2070         size_t namelen, datalen;
2071         int i;
2072         cap_rights_t rights;
2073         struct itimerval it;
2074         struct stat sb;
2075         struct sockaddr_storage ss;
2076         struct bitset *set;
2077
2078         for (name = buf, namelen = 0;
2079              namelen < buflen && name[namelen] != '\0';
2080              ++namelen)
2081                 /* nothing */;
2082         if (namelen == buflen)
2083                 goto invalid;
2084         if (name[namelen] != '\0')
2085                 goto invalid;
2086         data = buf + namelen + 1;
2087         datalen = buflen - namelen - 1;
2088         if (datalen == 0)
2089                 goto invalid;
2090         /* sanity check */
2091         for (i = 0; i < (int)namelen; ++i)
2092                 if (!isalpha(name[i]) && name[i] != '_')
2093                         goto invalid;
2094         if (strcmp(name, "caprights") == 0) {
2095                 if (datalen != sizeof(cap_rights_t))
2096                         goto invalid;
2097                 memcpy(&rights, data, datalen);
2098                 ktrcaprights(&rights);
2099         } else if (strcmp(name, "itimerval") == 0) {
2100                 if (datalen != sizeof(struct itimerval))
2101                         goto invalid;
2102                 memcpy(&it, data, datalen);
2103                 ktritimerval(&it);
2104         } else if (strcmp(name, "stat") == 0) {
2105                 if (datalen != sizeof(struct stat))
2106                         goto invalid;
2107                 memcpy(&sb, data, datalen);
2108                 ktrstat(&sb);
2109         } else if (strcmp(name, "sockaddr") == 0) {
2110                 if (datalen > sizeof(ss))
2111                         goto invalid;
2112                 memcpy(&ss, data, datalen);
2113                 if (datalen != ss.ss_len)
2114                         goto invalid;
2115                 ktrsockaddr((struct sockaddr *)&ss);
2116         } else if (strcmp(name, "cpuset_t") == 0) {
2117                 if (datalen < 1)
2118                         goto invalid;
2119                 set = malloc(datalen);
2120                 if (set == NULL)
2121                         errx(1, "%s", strerror(ENOMEM));
2122                 memcpy(set, data, datalen);
2123                 ktrbitset(name, set, datalen);
2124                 free(set);
2125         } else {
2126 #ifdef SYSDECODE_HAVE_LINUX
2127                 if (ktrstruct_linux(name, data, datalen) == false)
2128 #endif
2129                         printf("unknown structure\n");
2130         }
2131         return;
2132 invalid:
2133         printf("invalid record\n");
2134 }
2135
2136 void
2137 ktrcapfail(struct ktr_cap_fail *ktr)
2138 {
2139         switch (ktr->cap_type) {
2140         case CAPFAIL_NOTCAPABLE:
2141                 /* operation on fd with insufficient capabilities */
2142                 printf("operation requires ");
2143                 sysdecode_cap_rights(stdout, &ktr->cap_needed);
2144                 printf(", descriptor holds ");
2145                 sysdecode_cap_rights(stdout, &ktr->cap_held);
2146                 break;
2147         case CAPFAIL_INCREASE:
2148                 /* requested more capabilities than fd already has */
2149                 printf("attempt to increase capabilities from ");
2150                 sysdecode_cap_rights(stdout, &ktr->cap_held);
2151                 printf(" to ");
2152                 sysdecode_cap_rights(stdout, &ktr->cap_needed);
2153                 break;
2154         case CAPFAIL_SYSCALL:
2155                 /* called restricted syscall */
2156                 printf("disallowed system call");
2157                 break;
2158         case CAPFAIL_LOOKUP:
2159                 /* absolute or AT_FDCWD path, ".." path, etc. */
2160                 printf("restricted VFS lookup");
2161                 break;
2162         default:
2163                 printf("unknown capability failure: ");
2164                 sysdecode_cap_rights(stdout, &ktr->cap_needed);
2165                 printf(" ");
2166                 sysdecode_cap_rights(stdout, &ktr->cap_held);
2167                 break;
2168         }
2169         printf("\n");
2170 }
2171
2172 void
2173 ktrfault(struct ktr_fault *ktr)
2174 {
2175
2176         printf("0x%jx ", (uintmax_t)ktr->vaddr);
2177         print_mask_arg(sysdecode_vmprot, ktr->type);
2178         printf("\n");
2179 }
2180
2181 void
2182 ktrfaultend(struct ktr_faultend *ktr)
2183 {
2184         const char *str;
2185
2186         str = sysdecode_vmresult(ktr->result);
2187         if (str != NULL)
2188                 printf("%s", str);
2189         else
2190                 printf("<invalid=%d>", ktr->result);
2191         printf("\n");
2192 }
2193
2194 void
2195 ktrkevent(struct kevent *kev)
2196 {
2197
2198         printf("{ ident=");
2199         switch (kev->filter) {
2200         case EVFILT_READ:
2201         case EVFILT_WRITE:
2202         case EVFILT_VNODE:
2203         case EVFILT_PROC:
2204         case EVFILT_TIMER:
2205         case EVFILT_PROCDESC:
2206         case EVFILT_EMPTY:
2207                 printf("%ju", (uintmax_t)kev->ident);
2208                 break;
2209         case EVFILT_SIGNAL:
2210                 print_signal(kev->ident);
2211                 break;
2212         default:
2213                 printf("%p", (void *)kev->ident);
2214         }
2215         printf(", filter=");
2216         print_integer_arg(sysdecode_kevent_filter, kev->filter);
2217         printf(", flags=");
2218         print_mask_arg0(sysdecode_kevent_flags, kev->flags);
2219         printf(", fflags=");
2220         sysdecode_kevent_fflags(stdout, kev->filter, kev->fflags,
2221             decimal ? 10 : 16);
2222         printf(", data=%#jx, udata=%p }", (uintmax_t)kev->data, kev->udata);
2223 }
2224
2225 void
2226 ktrstructarray(struct ktr_struct_array *ksa, size_t buflen)
2227 {
2228         struct kevent kev;
2229         char *name, *data;
2230         size_t namelen, datalen;
2231         int i;
2232         bool first;
2233
2234         buflen -= sizeof(*ksa);
2235         for (name = (char *)(ksa + 1), namelen = 0;
2236              namelen < buflen && name[namelen] != '\0';
2237              ++namelen)
2238                 /* nothing */;
2239         if (namelen == buflen)
2240                 goto invalid;
2241         if (name[namelen] != '\0')
2242                 goto invalid;
2243         /* sanity check */
2244         for (i = 0; i < (int)namelen; ++i)
2245                 if (!isalnum(name[i]) && name[i] != '_')
2246                         goto invalid;
2247         data = name + namelen + 1;
2248         datalen = buflen - namelen - 1;
2249         printf("struct %s[] = { ", name);
2250         first = true;
2251         for (; datalen >= ksa->struct_size;
2252             data += ksa->struct_size, datalen -= ksa->struct_size) {
2253                 if (!first)
2254                         printf("\n             ");
2255                 else
2256                         first = false;
2257                 if (strcmp(name, "kevent") == 0) {
2258                         if (ksa->struct_size != sizeof(kev))
2259                                 goto bad_size;
2260                         memcpy(&kev, data, sizeof(kev));
2261                         ktrkevent(&kev);
2262                 } else if (strcmp(name, "freebsd11_kevent") == 0) {
2263                         struct freebsd11_kevent kev11;
2264
2265                         if (ksa->struct_size != sizeof(kev11))
2266                                 goto bad_size;
2267                         memcpy(&kev11, data, sizeof(kev11));
2268                         memset(&kev, 0, sizeof(kev));
2269                         kev.ident = kev11.ident;
2270                         kev.filter = kev11.filter;
2271                         kev.flags = kev11.flags;
2272                         kev.fflags = kev11.fflags;
2273                         kev.data = kev11.data;
2274                         kev.udata = kev11.udata;
2275                         ktrkevent(&kev);
2276 #ifdef _WANT_KEVENT32
2277                 } else if (strcmp(name, "kevent32") == 0) {
2278                         struct kevent32 kev32;
2279
2280                         if (ksa->struct_size != sizeof(kev32))
2281                                 goto bad_size;
2282                         memcpy(&kev32, data, sizeof(kev32));
2283                         memset(&kev, 0, sizeof(kev));
2284                         kev.ident = kev32.ident;
2285                         kev.filter = kev32.filter;
2286                         kev.flags = kev32.flags;
2287                         kev.fflags = kev32.fflags;
2288 #if BYTE_ORDER == BIG_ENDIAN
2289                         kev.data = kev32.data2 | ((int64_t)kev32.data1 << 32);
2290 #else
2291                         kev.data = kev32.data1 | ((int64_t)kev32.data2 << 32);
2292 #endif
2293                         kev.udata = (void *)(uintptr_t)kev32.udata;
2294                         ktrkevent(&kev);
2295                 } else if (strcmp(name, "freebsd11_kevent32") == 0) {
2296                         struct freebsd11_kevent32 kev32;
2297
2298                         if (ksa->struct_size != sizeof(kev32))
2299                                 goto bad_size;
2300                         memcpy(&kev32, data, sizeof(kev32));
2301                         memset(&kev, 0, sizeof(kev));
2302                         kev.ident = kev32.ident;
2303                         kev.filter = kev32.filter;
2304                         kev.flags = kev32.flags;
2305                         kev.fflags = kev32.fflags;
2306                         kev.data = kev32.data;
2307                         kev.udata = (void *)(uintptr_t)kev32.udata;
2308                         ktrkevent(&kev);
2309 #endif
2310                 } else {
2311                         printf("<unknown structure> }\n");
2312                         return;
2313                 }
2314         }
2315         printf(" }\n");
2316         return;
2317 invalid:
2318         printf("invalid record\n");
2319         return;
2320 bad_size:
2321         printf("<bad size> }\n");
2322         return;
2323 }
2324
2325 void
2326 usage(void)
2327 {
2328         fprintf(stderr, "usage: kdump [-dEnlHRrSsTA] [-f trfile] "
2329             "[-m maxdata] [-p pid] [-t trstr]\n");
2330         exit(1);
2331 }