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 #define _WANT_KERNEL_ERRNO
  45 #ifdef __LP64__
  46 #define _WANT_KEVENT32
  47 #endif
  48 #define _WANT_FREEBSD11_KEVENT
  49 #define _WANT_FREEBSD_BITSET
  50 #include <sys/param.h>
  51 #include <sys/capsicum.h>
  52 #include <sys/_bitset.h>
  53 #include <sys/bitset.h>
  54 #include <sys/errno.h>
  55 #include <sys/time.h>
  56 #include <sys/uio.h>
  57 #include <sys/event.h>
  58 #include <sys/ktrace.h>
  59 #include <sys/mman.h>
  60 #include <sys/ioctl.h>
  61 #include <sys/socket.h>
  62 #include <sys/stat.h>
  63 #include <sys/sysent.h>
  64 #include <sys/umtx.h>
  65 #include <sys/un.h>
  66 #include <sys/queue.h>
  67 #include <sys/wait.h>
  68 #ifdef WITH_CASPER
  69 #include <sys/nv.h>
  70 #endif
  71 #include <arpa/inet.h>
  72 #include <netinet/in.h>
  73 #include <ctype.h>
  74 #include <capsicum_helpers.h>
  75 #include <err.h>
  76 #include <grp.h>
  77 #include <inttypes.h>
  78 #include <locale.h>
  79 #include <netdb.h>
  80 #include <nl_types.h>
  81 #include <pwd.h>
  82 #include <stddef.h>
  83 #include <stdio.h>
  84 #include <stdlib.h>
  85 #include <string.h>
  86 #include <sysdecode.h>
  87 #include <time.h>
  88 #include <unistd.h>
  89 #include <vis.h>
  90 #include "ktrace.h"
  91 #include "kdump.h"
  92
  93 #ifdef WITH_CASPER
  94 #include <libcasper.h>
  95
  96 #include <casper/cap_grp.h>
  97 #include <casper/cap_pwd.h>
  98 #endif
  99
 100 int fetchprocinfo(struct ktr_header *, u_int *);
 101 u_int findabi(struct ktr_header *);
 102 int fread_tail(void *, int, int);
 103 void dumpheader(struct ktr_header *, u_int);
 104 void ktrsyscall(struct ktr_syscall *, u_int);
 105 void ktrsysret(struct ktr_sysret *, u_int);
 106 void ktrnamei(char *, int);
 107 void hexdump(char *, int, int);
 108 void visdump(char *, int, int);
 109 void ktrgenio(struct ktr_genio *, int);
 110 void ktrpsig(struct ktr_psig *);
 111 void ktrcsw(struct ktr_csw *);
 112 void ktrcsw_old(struct ktr_csw_old *);
 113 void ktruser(int, void *);
 114 void ktrcaprights(cap_rights_t *);
 115 void ktritimerval(struct itimerval *it);
 116 void ktrsockaddr(struct sockaddr *);
 117 void ktrstat(struct stat *);
 118 void ktrstruct(char *, size_t);
 119 void ktrcapfail(struct ktr_cap_fail *);
 120 void ktrfault(struct ktr_fault *);
 121 void ktrfaultend(struct ktr_faultend *);
 122 void ktrkevent(struct kevent *);
 123 void ktrstructarray(struct ktr_struct_array *, size_t);
 124 void ktrbitset(char *, struct bitset *, size_t);
 125 void ktrsyscall_freebsd(struct ktr_syscall *ktr, register_t **resip,
 126     int *resnarg, char *resc, u_int sv_flags);
 127 void usage(void);
 128
 129 #define TIMESTAMP_NONE          0x0
 130 #define TIMESTAMP_ABSOLUTE      0x1
 131 #define TIMESTAMP_ELAPSED       0x2
 132 #define TIMESTAMP_RELATIVE      0x4
 133
 134 bool decimal, fancy = true, resolv;
 135 static bool abiflag, suppressdata, syscallno, tail, threads;
 136 static int timestamp, maxdata;
 137 static const char *tracefile = DEF_TRACEFILE;
 138 static struct ktr_header ktr_header;
 139
 140 #define TIME_FORMAT     "%b %e %T %Y"
 141 #define eqs(s1, s2)     (strcmp((s1), (s2)) == 0)
 142
 143 struct proc_info
 144 {
 145         TAILQ_ENTRY(proc_info)  info;
 146         u_int                   sv_flags;
 147         pid_t                   pid;
 148 };
 149
 150 static TAILQ_HEAD(trace_procs, proc_info) trace_procs;
 151
 152 #ifdef WITH_CASPER
 153 static cap_channel_t *cappwd, *capgrp;
 154
 155 static int
 156 cappwdgrp_setup(cap_channel_t **cappwdp, cap_channel_t **capgrpp)
 157 {
 158         cap_channel_t *capcas, *cappwdloc, *capgrploc;
 159         const char *cmds[1], *fields[1];
 160
 161         capcas = cap_init();
 162         if (capcas == NULL) {
 163                 err(1, "unable to create casper process");
 164                 exit(1);
 165         }
 166         cappwdloc = cap_service_open(capcas, "system.pwd");
 167         capgrploc = cap_service_open(capcas, "system.grp");
 168         /* Casper capability no longer needed. */
 169         cap_close(capcas);
 170         if (cappwdloc == NULL || capgrploc == NULL) {
 171                 if (cappwdloc == NULL)
 172                         warn("unable to open system.pwd service");
 173                 if (capgrploc == NULL)
 174                         warn("unable to open system.grp service");
 175                 exit(1);
 176         }
 177         /* Limit system.pwd to only getpwuid() function and pw_name field. */
 178         cmds[0] = "getpwuid";
 179         if (cap_pwd_limit_cmds(cappwdloc, cmds, 1) < 0)
 180                 err(1, "unable to limit system.pwd service");
 181         fields[0] = "pw_name";
 182         if (cap_pwd_limit_fields(cappwdloc, fields, 1) < 0)
 183                 err(1, "unable to limit system.pwd service");
 184         /* Limit system.grp to only getgrgid() function and gr_name field. */
 185         cmds[0] = "getgrgid";
 186         if (cap_grp_limit_cmds(capgrploc, cmds, 1) < 0)
 187                 err(1, "unable to limit system.grp service");
 188         fields[0] = "gr_name";
 189         if (cap_grp_limit_fields(capgrploc, fields, 1) < 0)
 190                 err(1, "unable to limit system.grp service");
 191
 192         *cappwdp = cappwdloc;
 193         *capgrpp = capgrploc;
 194         return (0);
 195 }
 196 #endif  /* WITH_CASPER */
 197
 198 void
 199 print_integer_arg(const char *(*decoder)(int), int value)
 200 {
 201         const char *str;
 202
 203         str = decoder(value);
 204         if (str != NULL)
 205                 printf("%s", str);
 206         else {
 207                 if (decimal)
 208                         printf("<invalid=%d>", value);
 209                 else
 210                         printf("<invalid=%#x>", value);
 211         }
 212 }
 213
 214 /* Like print_integer_arg but unknown values are treated as valid. */
 215 void
 216 print_integer_arg_valid(const char *(*decoder)(int), int value)
 217 {
 218         const char *str;
 219
 220         str = decoder(value);
 221         if (str != NULL)
 222                 printf("%s", str);
 223         else {
 224                 if (decimal)
 225                         printf("%d", value);
 226                 else
 227                         printf("%#x", value);
 228         }
 229 }
 230
 231 bool
 232 print_mask_arg_part(bool (*decoder)(FILE *, int, int *), int value, int *rem)
 233 {
 234
 235         printf("%#x<", value);
 236         return (decoder(stdout, value, rem));
 237 }
 238
 239 void
 240 print_mask_arg(bool (*decoder)(FILE *, int, int *), int value)
 241 {
 242         bool invalid;
 243         int rem;
 244
 245         invalid = !print_mask_arg_part(decoder, value, &rem);
 246         printf(">");
 247         if (invalid)
 248                 printf("<invalid>%u", rem);
 249 }
 250
 251 void
 252 print_mask_arg0(bool (*decoder)(FILE *, int, int *), int value)
 253 {
 254         bool invalid;
 255         int rem;
 256
 257         if (value == 0) {
 258                 printf("0");
 259                 return;
 260         }
 261         printf("%#x<", value);
 262         invalid = !decoder(stdout, value, &rem);
 263         printf(">");
 264         if (invalid)
 265                 printf("<invalid>%u", rem);
 266 }
 267
 268 static void
 269 decode_fileflags(fflags_t value)
 270 {
 271         bool invalid;
 272         fflags_t rem;
 273
 274         if (value == 0) {
 275                 printf("0");
 276                 return;
 277         }
 278         printf("%#x<", value);
 279         invalid = !sysdecode_fileflags(stdout, value, &rem);
 280         printf(">");
 281         if (invalid)
 282                 printf("<invalid>%u", rem);
 283 }
 284
 285 void
 286 decode_filemode(int value)
 287 {
 288         bool invalid;
 289         int rem;
 290
 291         if (value == 0) {
 292                 printf("0");
 293                 return;
 294         }
 295         printf("%#o<", value);
 296         invalid = !sysdecode_filemode(stdout, value, &rem);
 297         printf(">");
 298         if (invalid)
 299                 printf("<invalid>%u", rem);
 300 }
 301
 302 void
 303 print_mask_arg32(bool (*decoder)(FILE *, uint32_t, uint32_t *), uint32_t value)
 304 {
 305         bool invalid;
 306         uint32_t rem;
 307
 308         printf("%#x<", value);
 309         invalid = !decoder(stdout, value, &rem);
 310         printf(">");
 311         if (invalid)
 312                 printf("<invalid>%u", rem);
 313 }
 314
 315 void
 316 print_mask_argul(bool (*decoder)(FILE *, u_long, u_long *), u_long value)
 317 {
 318         bool invalid;
 319         u_long rem;
 320
 321         if (value == 0) {
 322                 printf("0");
 323                 return;
 324         }
 325         printf("%#lx<", value);
 326         invalid = !decoder(stdout, value, &rem);
 327         printf(">");
 328         if (invalid)
 329                 printf("<invalid>%lu", rem);
 330 }
 331
 332 int
 333 main(int argc, char *argv[])
 334 {
 335         int ch, ktrlen, size;
 336         void *m;
 337         int trpoints = ALL_POINTS;
 338         int drop_logged;
 339         pid_t pid = 0;
 340         u_int sv_flags;
 341
 342         setlocale(LC_CTYPE, "");
 343
 344         timestamp = TIMESTAMP_NONE;
 345
 346         while ((ch = getopt(argc,argv,"f:dElm:np:AHRrSsTt:")) != -1)
 347                 switch (ch) {
 348                 case 'A':
 349                         abiflag = true;
 350                         break;
 351                 case 'f':
 352                         tracefile = optarg;
 353                         break;
 354                 case 'd':
 355                         decimal = true;
 356                         break;
 357                 case 'l':
 358                         tail = true;
 359                         break;
 360                 case 'm':
 361                         maxdata = atoi(optarg);
 362                         break;
 363                 case 'n':
 364                         fancy = false;
 365                         break;
 366                 case 'p':
 367                         pid = atoi(optarg);
 368                         break;
 369                 case 'r':
 370                         resolv = true;
 371                         break;
 372                 case 'S':
 373                         syscallno = true;
 374                         break;
 375                 case 's':
 376                         suppressdata = true;
 377                         break;
 378                 case 'E':
 379                         timestamp |= TIMESTAMP_ELAPSED;
 380                         break;
 381                 case 'H':
 382                         threads = true;
 383                         break;
 384                 case 'R':
 385                         timestamp |= TIMESTAMP_RELATIVE;
 386                         break;
 387                 case 'T':
 388                         timestamp |= TIMESTAMP_ABSOLUTE;
 389                         break;
 390                 case 't':
 391                         trpoints = getpoints(optarg);
 392                         if (trpoints < 0)
 393                                 errx(1, "unknown trace point in %s", optarg);
 394                         break;
 395                 default:
 396                         usage();
 397                 }
 398
 399         if (argc > optind)
 400                 usage();
 401
 402         m = malloc(size = 1025);
 403         if (m == NULL)
 404                 errx(1, "%s", strerror(ENOMEM));
 405         if (strcmp(tracefile, "-") != 0)
 406                 if (!freopen(tracefile, "r", stdin))
 407                         err(1, "%s", tracefile);
 408
 409         caph_cache_catpages();
 410         caph_cache_tzdata();
 411
 412 #ifdef WITH_CASPER
 413         if (resolv) {
 414                 if (cappwdgrp_setup(&cappwd, &capgrp) < 0) {
 415                         cappwd = NULL;
 416                         capgrp = NULL;
 417                 }
 418         }
 419         if (!resolv || (cappwd != NULL && capgrp != NULL)) {
 420                 if (caph_enter() < 0)
 421                         err(1, "unable to enter capability mode");
 422         }
 423 #else
 424         if (!resolv) {
 425                 if (caph_enter() < 0)
 426                         err(1, "unable to enter capability mode");
 427         }
 428 #endif
 429         if (caph_limit_stdio() == -1)
 430                 err(1, "unable to limit stdio");
 431
 432         TAILQ_INIT(&trace_procs);
 433         drop_logged = 0;
 434         while (fread_tail(&ktr_header, sizeof(struct ktr_header), 1)) {
 435                 if (ktr_header.ktr_type & KTR_DROP) {
 436                         ktr_header.ktr_type &= ~KTR_DROP;
 437                         if (!drop_logged && threads) {
 438                                 printf(
 439                                     "%6jd %6jd %-8.*s Events dropped.\n",
 440                                     (intmax_t)ktr_header.ktr_pid,
 441                                     ktr_header.ktr_tid > 0 ?
 442                                     (intmax_t)ktr_header.ktr_tid : 0,
 443                                     MAXCOMLEN, ktr_header.ktr_comm);
 444                                 drop_logged = 1;
 445                         } else if (!drop_logged) {
 446                                 printf("%6jd %-8.*s Events dropped.\n",
 447                                     (intmax_t)ktr_header.ktr_pid, MAXCOMLEN,
 448                                     ktr_header.ktr_comm);
 449                                 drop_logged = 1;
 450                         }
 451                 }
 452                 if ((ktrlen = ktr_header.ktr_len) < 0)
 453                         errx(1, "bogus length 0x%x", ktrlen);
 454                 if (ktrlen > size) {
 455                         m = realloc(m, ktrlen+1);
 456                         if (m == NULL)
 457                                 errx(1, "%s", strerror(ENOMEM));
 458                         size = ktrlen;
 459                 }
 460                 if (ktrlen && fread_tail(m, ktrlen, 1) == 0)
 461                         errx(1, "data too short");
 462                 if (fetchprocinfo(&ktr_header, (u_int *)m) != 0)
 463                         continue;
 464                 if (pid && ktr_header.ktr_pid != pid &&
 465                     ktr_header.ktr_tid != pid)
 466                         continue;
 467                 if ((trpoints & (1<<ktr_header.ktr_type)) == 0)
 468                         continue;
 469                 sv_flags = findabi(&ktr_header);
 470                 dumpheader(&ktr_header, sv_flags);
 471                 drop_logged = 0;
 472                 switch (ktr_header.ktr_type) {
 473                 case KTR_SYSCALL:
 474                         ktrsyscall((struct ktr_syscall *)m, sv_flags);
 475                         break;
 476                 case KTR_SYSRET:
 477                         ktrsysret((struct ktr_sysret *)m, sv_flags);
 478                         break;
 479                 case KTR_NAMEI:
 480                 case KTR_SYSCTL:
 481                         ktrnamei(m, ktrlen);
 482                         break;
 483                 case KTR_GENIO:
 484                         ktrgenio((struct ktr_genio *)m, ktrlen);
 485                         break;
 486                 case KTR_PSIG:
 487                         ktrpsig((struct ktr_psig *)m);
 488                         break;
 489                 case KTR_CSW:
 490                         if (ktrlen == sizeof(struct ktr_csw_old))
 491                                 ktrcsw_old((struct ktr_csw_old *)m);
 492                         else
 493                                 ktrcsw((struct ktr_csw *)m);
 494                         break;
 495                 case KTR_USER:
 496                         ktruser(ktrlen, m);
 497                         break;
 498                 case KTR_STRUCT:
 499                         ktrstruct(m, ktrlen);
 500                         break;
 501                 case KTR_CAPFAIL:
 502                         ktrcapfail((struct ktr_cap_fail *)m);
 503                         break;
 504                 case KTR_FAULT:
 505                         ktrfault((struct ktr_fault *)m);
 506                         break;
 507                 case KTR_FAULTEND:
 508                         ktrfaultend((struct ktr_faultend *)m);
 509                         break;
 510                 case KTR_STRUCT_ARRAY:
 511                         ktrstructarray((struct ktr_struct_array *)m, ktrlen);
 512                         break;
 513                 default:
 514                         printf("\n");
 515                         break;
 516                 }
 517                 if (tail)
 518                         fflush(stdout);
 519         }
 520         return 0;
 521 }
 522
 523 int
 524 fread_tail(void *buf, int size, int num)
 525 {
 526         int i;
 527
 528         while ((i = fread(buf, size, num, stdin)) == 0 && tail) {
 529                 sleep(1);
 530                 clearerr(stdin);
 531         }
 532         return (i);
 533 }
 534
 535 int
 536 fetchprocinfo(struct ktr_header *kth, u_int *flags)
 537 {
 538         struct proc_info *pi;
 539
 540         switch (kth->ktr_type) {
 541         case KTR_PROCCTOR:
 542                 TAILQ_FOREACH(pi, &trace_procs, info) {
 543                         if (pi->pid == kth->ktr_pid) {
 544                                 TAILQ_REMOVE(&trace_procs, pi, info);
 545                                 break;
 546                         }
 547                 }
 548                 pi = malloc(sizeof(struct proc_info));
 549                 if (pi == NULL)
 550                         errx(1, "%s", strerror(ENOMEM));
 551                 pi->sv_flags = *flags;
 552                 pi->pid = kth->ktr_pid;
 553                 TAILQ_INSERT_TAIL(&trace_procs, pi, info);
 554                 return (1);
 555
 556         case KTR_PROCDTOR:
 557                 TAILQ_FOREACH(pi, &trace_procs, info) {
 558                         if (pi->pid == kth->ktr_pid) {
 559                                 TAILQ_REMOVE(&trace_procs, pi, info);
 560                                 free(pi);
 561                                 break;
 562                         }
 563                 }
 564                 return (1);
 565         }
 566
 567         return (0);
 568 }
 569
 570 u_int
 571 findabi(struct ktr_header *kth)
 572 {
 573         struct proc_info *pi;
 574
 575         TAILQ_FOREACH(pi, &trace_procs, info) {
 576                 if (pi->pid == kth->ktr_pid) {
 577                         return (pi->sv_flags);
 578                 }
 579         }
 580         return (0);
 581 }
 582
 583 void
 584 dumpheader(struct ktr_header *kth, u_int sv_flags)
 585 {
 586         static char unknown[64];
 587         static struct timeval prevtime, prevtime_e;
 588         struct timeval temp;
 589         const char *abi;
 590         const char *arch;
 591         const char *type;
 592         const char *sign;
 593
 594         switch (kth->ktr_type) {
 595         case KTR_SYSCALL:
 596                 type = "CALL";
 597                 break;
 598         case KTR_SYSRET:
 599                 type = "RET ";
 600                 break;
 601         case KTR_NAMEI:
 602                 type = "NAMI";
 603                 break;
 604         case KTR_GENIO:
 605                 type = "GIO ";
 606                 break;
 607         case KTR_PSIG:
 608                 type = "PSIG";
 609                 break;
 610         case KTR_CSW:
 611                 type = "CSW ";
 612                 break;
 613         case KTR_USER:
 614                 type = "USER";
 615                 break;
 616         case KTR_STRUCT:
 617         case KTR_STRUCT_ARRAY:
 618                 type = "STRU";
 619                 break;
 620         case KTR_SYSCTL:
 621                 type = "SCTL";
 622                 break;
 623         case KTR_CAPFAIL:
 624                 type = "CAP ";
 625                 break;
 626         case KTR_FAULT:
 627                 type = "PFLT";
 628                 break;
 629         case KTR_FAULTEND:
 630                 type = "PRET";
 631                 break;
 632         default:
 633                 sprintf(unknown, "UNKNOWN(%d)", kth->ktr_type);
 634                 type = unknown;
 635         }
 636
 637         /*
 638          * The ktr_tid field was previously the ktr_buffer field, which held
 639          * the kernel pointer value for the buffer associated with data
 640          * following the record header.  It now holds a threadid, but only
 641          * for trace files after the change.  Older trace files still contain
 642          * kernel pointers.  Detect this and suppress the results by printing
 643          * negative tid's as 0.
 644          */
 645         if (threads)
 646                 printf("%6jd %6jd %-8.*s ", (intmax_t)kth->ktr_pid,
 647                     kth->ktr_tid > 0 ? (intmax_t)kth->ktr_tid : 0,
 648                     MAXCOMLEN, kth->ktr_comm);
 649         else
 650                 printf("%6jd %-8.*s ", (intmax_t)kth->ktr_pid, MAXCOMLEN,
 651                     kth->ktr_comm);
 652         if (timestamp) {
 653                 if (timestamp & TIMESTAMP_ABSOLUTE) {
 654                         printf("%jd.%06ld ", (intmax_t)kth->ktr_time.tv_sec,
 655                             kth->ktr_time.tv_usec);
 656                 }
 657                 if (timestamp & TIMESTAMP_ELAPSED) {
 658                         if (prevtime_e.tv_sec == 0)
 659                                 prevtime_e = kth->ktr_time;
 660                         timersub(&kth->ktr_time, &prevtime_e, &temp);
 661                         printf("%jd.%06ld ", (intmax_t)temp.tv_sec,
 662                             temp.tv_usec);
 663                 }
 664                 if (timestamp & TIMESTAMP_RELATIVE) {
 665                         if (prevtime.tv_sec == 0)
 666                                 prevtime = kth->ktr_time;
 667                         if (timercmp(&kth->ktr_time, &prevtime, <)) {
 668                                 timersub(&prevtime, &kth->ktr_time, &temp);
 669                                 sign = "-";
 670                         } else {
 671                                 timersub(&kth->ktr_time, &prevtime, &temp);
 672                                 sign = "";
 673                         }
 674                         prevtime = kth->ktr_time;
 675                         printf("%s%jd.%06ld ", sign, (intmax_t)temp.tv_sec,
 676                             temp.tv_usec);
 677                 }
 678         }
 679         printf("%s  ", type);
 680         if (abiflag != 0) {
 681                 switch (sv_flags & SV_ABI_MASK) {
 682                 case SV_ABI_LINUX:
 683                         abi = "L";
 684                         break;
 685                 case SV_ABI_FREEBSD:
 686                         abi = "F";
 687                         break;
 688                 case SV_ABI_CLOUDABI:
 689                         abi = "C";
 690                         break;
 691                 default:
 692                         abi = "U";
 693                         break;
 694                 }
 695
 696                 if ((sv_flags & SV_LP64) != 0)
 697                         arch = "64";
 698                 else if ((sv_flags & SV_ILP32) != 0)
 699                         arch = "32";
 700                 else
 701                         arch = "00";
 702
 703                 printf("%s%s  ", abi, arch);
 704         }
 705 }
 706
 707 #include <sys/syscall.h>
 708
 709 static void
 710 ioctlname(unsigned long val)
 711 {
 712         const char *str;
 713
 714         str = sysdecode_ioctlname(val);
 715         if (str != NULL)
 716                 printf("%s", str);
 717         else if (decimal)
 718                 printf("%lu", val);
 719         else
 720                 printf("%#lx", val);
 721 }
 722
 723 static enum sysdecode_abi
 724 syscallabi(u_int sv_flags)
 725 {
 726
 727         if (sv_flags == 0)
 728                 return (SYSDECODE_ABI_FREEBSD);
 729         switch (sv_flags & SV_ABI_MASK) {
 730         case SV_ABI_FREEBSD:
 731                 return (SYSDECODE_ABI_FREEBSD);
 732         case SV_ABI_LINUX:
 733 #ifdef __LP64__
 734                 if (sv_flags & SV_ILP32)
 735                         return (SYSDECODE_ABI_LINUX32);
 736 #endif
 737                 return (SYSDECODE_ABI_LINUX);
 738         case SV_ABI_CLOUDABI:
 739                 return (SYSDECODE_ABI_CLOUDABI64);
 740         default:
 741                 return (SYSDECODE_ABI_UNKNOWN);
 742         }
 743 }
 744
 745 static void
 746 syscallname(u_int code, u_int sv_flags)
 747 {
 748         const char *name;
 749
 750         name = sysdecode_syscallname(syscallabi(sv_flags), code);
 751         if (name == NULL)
 752                 printf("[%d]", code);
 753         else {
 754                 printf("%s", name);
 755                 if (syscallno)
 756                         printf("[%d]", code);
 757         }
 758 }
 759
 760 static void
 761 print_signal(int signo)
 762 {
 763         const char *signame;
 764
 765         signame = sysdecode_signal(signo);
 766         if (signame != NULL)
 767                 printf("%s", signame);
 768         else
 769                 printf("SIG %d", signo);
 770 }
 771
 772 void
 773 ktrsyscall(struct ktr_syscall *ktr, u_int sv_flags)
 774 {
 775         int narg = ktr->ktr_narg;
 776         register_t *ip;
 777
 778         syscallname(ktr->ktr_code, sv_flags);
 779         ip = &ktr->ktr_args[0];
 780         if (narg) {
 781                 char c = '(';
 782                 if (fancy) {
 783                         switch (sv_flags & SV_ABI_MASK) {
 784                         case SV_ABI_FREEBSD:
 785                                 ktrsyscall_freebsd(ktr, &ip, &narg, &c,
 786                                     sv_flags);
 787                                 break;
 788 #ifdef SYSDECODE_HAVE_LINUX
 789                         case SV_ABI_LINUX:
 790 #ifdef __amd64__
 791                                 if (sv_flags & SV_ILP32)
 792                                         ktrsyscall_linux32(ktr, &ip,
 793                                             &narg, &c);
 794                                 else
 795 #endif
 796                                 ktrsyscall_linux(ktr, &ip, &narg, &c);
 797                                 break;
 798 #endif /* SYSDECODE_HAVE_LINUX */
 799                         }
 800                 }
 801                 while (narg > 0)
 802                         print_number(ip, narg, c);
 803                 putchar(')');
 804         }
 805         putchar('\n');
 806 }
 807
 808 void
 809 ktrsyscall_freebsd(struct ktr_syscall *ktr, register_t **resip,
 810     int *resnarg, char *resc, u_int sv_flags)
 811 {
 812         int narg = ktr->ktr_narg;
 813         register_t *ip, *first;
 814         intmax_t arg;
 815         int quad_align, quad_slots;
 816
 817         ip = first = &ktr->ktr_args[0];
 818         char c = *resc;
 819
 820                         quad_align = 0;
 821                         if (sv_flags & SV_ILP32) {
 822 #ifdef __powerpc__
 823                                 quad_align = 1;
 824 #endif
 825                                 quad_slots = 2;
 826                         } else
 827                                 quad_slots = 1;
 828                         switch (ktr->ktr_code) {
 829                         case SYS_bindat:
 830                         case SYS_chflagsat:
 831                         case SYS_connectat:
 832                         case SYS_faccessat:
 833                         case SYS_fchmodat:
 834                         case SYS_fchownat:
 835                         case SYS_fstatat:
 836                         case SYS_futimesat:
 837                         case SYS_linkat:
 838                         case SYS_mkdirat:
 839                         case SYS_mkfifoat:
 840                         case SYS_mknodat:
 841                         case SYS_openat:
 842                         case SYS_readlinkat:
 843                         case SYS_renameat:
 844                         case SYS_unlinkat:
 845                         case SYS_utimensat:
 846                                 putchar('(');
 847                                 print_integer_arg_valid(sysdecode_atfd, *ip);
 848                                 c = ',';
 849                                 ip++;
 850                                 narg--;
 851                                 break;
 852                         }
 853                         switch (ktr->ktr_code) {
 854                         case SYS_ioctl: {
 855                                 print_number(ip, narg, c);
 856                                 putchar(c);
 857                                 ioctlname(*ip);
 858                                 c = ',';
 859                                 ip++;
 860                                 narg--;
 861                                 break;
 862                         }
 863                         case SYS_ptrace:
 864                                 putchar('(');
 865                                 print_integer_arg(sysdecode_ptrace_request, *ip);
 866                                 c = ',';
 867                                 ip++;
 868                                 narg--;
 869                                 break;
 870                         case SYS_access:
 871                         case SYS_eaccess:
 872                         case SYS_faccessat:
 873                                 print_number(ip, narg, c);
 874                                 putchar(',');
 875                                 print_mask_arg(sysdecode_access_mode, *ip);
 876                                 ip++;
 877                                 narg--;
 878                                 break;
 879                         case SYS_close_range:
 880                                 print_number(ip, narg, c);
 881                                 print_number(ip, narg, c);
 882                                 putchar(',');
 883                                 print_mask_arg(sysdecode_close_range_flags, *ip);
 884                                 ip += 3;
 885                                 narg -= 3;
 886                                 break;
 887                         case SYS_open:
 888                         case SYS_openat:
 889                                 print_number(ip, narg, c);
 890                                 putchar(',');
 891                                 print_mask_arg(sysdecode_open_flags, ip[0]);
 892                                 if ((ip[0] & O_CREAT) == O_CREAT) {
 893                                         putchar(',');
 894                                         decode_filemode(ip[1]);
 895                                 }
 896                                 ip += 2;
 897                                 narg -= 2;
 898                                 break;
 899                         case SYS_wait4:
 900                                 print_number(ip, narg, c);
 901                                 print_number(ip, narg, c);
 902                                 putchar(',');
 903                                 print_mask_arg0(sysdecode_wait4_options, *ip);
 904                                 ip++;
 905                                 narg--;
 906                                 break;
 907                         case SYS_wait6:
 908                                 putchar('(');
 909                                 print_integer_arg(sysdecode_idtype, *ip);
 910                                 c = ',';
 911                                 ip++;
 912                                 narg--;
 913                                 print_number64(first, ip, narg, c);
 914                                 print_number(ip, narg, c);
 915                                 putchar(',');
 916                                 print_mask_arg(sysdecode_wait6_options, *ip);
 917                                 ip++;
 918                                 narg--;
 919                                 break;
 920                         case SYS_chmod:
 921                         case SYS_fchmod:
 922                         case SYS_lchmod:
 923                         case SYS_fchmodat:
 924                                 print_number(ip, narg, c);
 925                                 putchar(',');
 926                                 decode_filemode(*ip);
 927                                 ip++;
 928                                 narg--;
 929                                 break;
 930                         case SYS_mknodat:
 931                                 print_number(ip, narg, c);
 932                                 putchar(',');
 933                                 decode_filemode(*ip);
 934                                 ip++;
 935                                 narg--;
 936                                 break;
 937                         case SYS_getfsstat:
 938                                 print_number(ip, narg, c);
 939                                 print_number(ip, narg, c);
 940                                 putchar(',');
 941                                 print_integer_arg(sysdecode_getfsstat_mode, *ip);
 942                                 ip++;
 943                                 narg--;
 944                                 break;
 945                         case SYS_mount:
 946                                 print_number(ip, narg, c);
 947                                 print_number(ip, narg, c);
 948                                 putchar(',');
 949                                 print_mask_arg(sysdecode_mount_flags, *ip);
 950                                 ip++;
 951                                 narg--;
 952                                 break;
 953                         case SYS_unmount:
 954                                 print_number(ip, narg, c);
 955                                 putchar(',');
 956                                 print_mask_arg(sysdecode_mount_flags, *ip);
 957                                 ip++;
 958                                 narg--;
 959                                 break;
 960                         case SYS_recvmsg:
 961                         case SYS_sendmsg:
 962                                 print_number(ip, narg, c);
 963                                 print_number(ip, narg, c);
 964                                 putchar(',');
 965                                 print_mask_arg0(sysdecode_msg_flags, *ip);
 966                                 ip++;
 967                                 narg--;
 968                                 break;
 969                         case SYS_recvfrom:
 970                         case SYS_sendto:
 971                                 print_number(ip, narg, c);
 972                                 print_number(ip, narg, c);
 973                                 print_number(ip, narg, c);
 974                                 putchar(',');
 975                                 print_mask_arg0(sysdecode_msg_flags, *ip);
 976                                 ip++;
 977                                 narg--;
 978                                 break;
 979                         case SYS_chflags:
 980                         case SYS_chflagsat:
 981                         case SYS_fchflags:
 982                         case SYS_lchflags:
 983                                 print_number(ip, narg, c);
 984                                 putchar(',');
 985                                 decode_fileflags(*ip);
 986                                 ip++;
 987                                 narg--;
 988                                 break;
 989                         case SYS_kill:
 990                                 print_number(ip, narg, c);
 991                                 putchar(',');
 992                                 print_signal(*ip);
 993                                 ip++;
 994                                 narg--;
 995                                 break;
 996                         case SYS_reboot:
 997                                 putchar('(');
 998                                 print_mask_arg(sysdecode_reboot_howto, *ip);
 999                                 ip++;
1000                                 narg--;
1001                                 break;
1002                         case SYS_umask:
1003                                 putchar('(');
1004                                 decode_filemode(*ip);
1005                                 ip++;
1006                                 narg--;
1007                                 break;
1008                         case SYS_msync:
1009                                 print_number(ip, narg, c);
1010                                 print_number(ip, narg, c);
1011                                 putchar(',');
1012                                 print_mask_arg(sysdecode_msync_flags, *ip);
1013                                 ip++;
1014                                 narg--;
1015                                 break;
1016 #ifdef SYS_freebsd6_mmap
1017                         case SYS_freebsd6_mmap:
1018                                 print_number(ip, narg, c);
1019                                 print_number(ip, narg, c);
1020                                 putchar(',');
1021                                 print_mask_arg(sysdecode_mmap_prot, *ip);
1022                                 putchar(',');
1023                                 ip++;
1024                                 narg--;
1025                                 print_mask_arg(sysdecode_mmap_flags, *ip);
1026                                 ip++;
1027                                 narg--;
1028                                 break;
1029 #endif
1030                         case SYS_mmap:
1031                                 print_number(ip, narg, c);
1032                                 print_number(ip, narg, c);
1033                                 putchar(',');
1034                                 print_mask_arg(sysdecode_mmap_prot, *ip);
1035                                 putchar(',');
1036                                 ip++;
1037                                 narg--;
1038                                 print_mask_arg(sysdecode_mmap_flags, *ip);
1039                                 ip++;
1040                                 narg--;
1041                                 break;
1042                         case SYS_mprotect:
1043                                 print_number(ip, narg, c);
1044                                 print_number(ip, narg, c);
1045                                 putchar(',');
1046                                 print_mask_arg(sysdecode_mmap_prot, *ip);
1047                                 ip++;
1048                                 narg--;
1049                                 break;
1050                         case SYS_madvise:
1051                                 print_number(ip, narg, c);
1052                                 print_number(ip, narg, c);
1053                                 putchar(',');
1054                                 print_integer_arg(sysdecode_madvice, *ip);
1055                                 ip++;
1056                                 narg--;
1057                                 break;
1058                         case SYS_pathconf:
1059                         case SYS_lpathconf:
1060                         case SYS_fpathconf:
1061                                 print_number(ip, narg, c);
1062                                 putchar(',');
1063                                 print_integer_arg(sysdecode_pathconf_name, *ip);
1064                                 ip++;
1065                                 narg--;
1066                                 break;
1067                         case SYS_getpriority:
1068                         case SYS_setpriority:
1069                                 putchar('(');
1070                                 print_integer_arg(sysdecode_prio_which, *ip);
1071                                 c = ',';
1072                                 ip++;
1073                                 narg--;
1074                                 break;
1075                         case SYS_fcntl:
1076                                 print_number(ip, narg, c);
1077                                 putchar(',');
1078                                 print_integer_arg(sysdecode_fcntl_cmd, ip[0]);
1079                                 if (sysdecode_fcntl_arg_p(ip[0])) {
1080                                         putchar(',');
1081                                         if (ip[0] == F_SETFL)
1082                                                 print_mask_arg(
1083                                                     sysdecode_fcntl_fileflags,
1084                                                         ip[1]);
1085                                         else
1086                                                 sysdecode_fcntl_arg(stdout,
1087                                                     ip[0], ip[1],
1088                                                     decimal ? 10 : 16);
1089                                 }
1090                                 ip += 2;
1091                                 narg -= 2;
1092                                 break;
1093                         case SYS_socket: {
1094                                 int sockdomain;
1095                                 putchar('(');
1096                                 sockdomain = *ip;
1097                                 print_integer_arg(sysdecode_socketdomain,
1098                                     sockdomain);
1099                                 ip++;
1100                                 narg--;
1101                                 putchar(',');
1102                                 print_mask_arg(sysdecode_socket_type, *ip);
1103                                 ip++;
1104                                 narg--;
1105                                 if (sockdomain == PF_INET ||
1106                                     sockdomain == PF_INET6) {
1107                                         putchar(',');
1108                                         print_integer_arg(sysdecode_ipproto,
1109                                             *ip);
1110                                         ip++;
1111                                         narg--;
1112                                 }
1113                                 c = ',';
1114                                 break;
1115                         }
1116                         case SYS_setsockopt:
1117                         case SYS_getsockopt: {
1118                                 const char *str;
1119
1120                                 print_number(ip, narg, c);
1121                                 putchar(',');
1122                                 print_integer_arg_valid(sysdecode_sockopt_level,
1123                                     *ip);
1124                                 str = sysdecode_sockopt_name(ip[0], ip[1]);
1125                                 if (str != NULL) {
1126                                         printf(",%s", str);
1127                                         ip++;
1128                                         narg--;
1129                                 }
1130                                 ip++;
1131                                 narg--;
1132                                 break;
1133                         }
1134 #ifdef SYS_freebsd6_lseek
1135                         case SYS_freebsd6_lseek:
1136                                 print_number(ip, narg, c);
1137                                 /* Hidden 'pad' argument, not in lseek(2) */
1138                                 print_number(ip, narg, c);
1139                                 print_number64(first, ip, narg, c);
1140                                 putchar(',');
1141                                 print_integer_arg(sysdecode_whence, *ip);
1142                                 ip++;
1143                                 narg--;
1144                                 break;
1145 #endif
1146                         case SYS_lseek:
1147                                 print_number(ip, narg, c);
1148                                 print_number64(first, ip, narg, c);
1149                                 putchar(',');
1150                                 print_integer_arg(sysdecode_whence, *ip);
1151                                 ip++;
1152                                 narg--;
1153                                 break;
1154                         case SYS_flock:
1155                                 print_number(ip, narg, c);
1156                                 putchar(',');
1157                                 print_mask_arg(sysdecode_flock_operation, *ip);
1158                                 ip++;
1159                                 narg--;
1160                                 break;
1161                         case SYS_mkfifo:
1162                         case SYS_mkfifoat:
1163                         case SYS_mkdir:
1164                         case SYS_mkdirat:
1165                                 print_number(ip, narg, c);
1166                                 putchar(',');
1167                                 decode_filemode(*ip);
1168                                 ip++;
1169                                 narg--;
1170                                 break;
1171                         case SYS_shutdown:
1172                                 print_number(ip, narg, c);
1173                                 putchar(',');
1174                                 print_integer_arg(sysdecode_shutdown_how, *ip);
1175                                 ip++;
1176                                 narg--;
1177                                 break;
1178                         case SYS_socketpair:
1179                                 putchar('(');
1180                                 print_integer_arg(sysdecode_socketdomain, *ip);
1181                                 ip++;
1182                                 narg--;
1183                                 putchar(',');
1184                                 print_mask_arg(sysdecode_socket_type, *ip);
1185                                 ip++;
1186                                 narg--;
1187                                 c = ',';
1188                                 break;
1189                         case SYS_getrlimit:
1190                         case SYS_setrlimit:
1191                                 putchar('(');
1192                                 print_integer_arg(sysdecode_rlimit, *ip);
1193                                 ip++;
1194                                 narg--;
1195                                 c = ',';
1196                                 break;
1197                         case SYS_getrusage:
1198                                 putchar('(');
1199                                 print_integer_arg(sysdecode_getrusage_who, *ip);
1200                                 ip++;
1201                                 narg--;
1202                                 c = ',';
1203                                 break;
1204                         case SYS_quotactl:
1205                                 print_number(ip, narg, c);
1206                                 putchar(',');
1207                                 if (!sysdecode_quotactl_cmd(stdout, *ip)) {
1208                                         if (decimal)
1209                                                 printf("<invalid=%d>", (int)*ip);
1210                                         else
1211                                                 printf("<invalid=%#x>",
1212                                                     (int)*ip);
1213                                 }
1214                                 ip++;
1215                                 narg--;
1216                                 c = ',';
1217                                 break;
1218                         case SYS_nfssvc:
1219                                 putchar('(');
1220                                 print_integer_arg(sysdecode_nfssvc_flags, *ip);
1221                                 ip++;
1222                                 narg--;
1223                                 c = ',';
1224                                 break;
1225                         case SYS_rtprio:
1226                         case SYS_rtprio_thread:
1227                                 putchar('(');
1228                                 print_integer_arg(sysdecode_rtprio_function,
1229                                     *ip);
1230                                 ip++;
1231                                 narg--;
1232                                 c = ',';
1233                                 break;
1234                         case SYS___semctl:
1235                                 print_number(ip, narg, c);
1236                                 print_number(ip, narg, c);
1237                                 putchar(',');
1238                                 print_integer_arg(sysdecode_semctl_cmd, *ip);
1239                                 ip++;
1240                                 narg--;
1241                                 break;
1242                         case SYS_semget:
1243                                 print_number(ip, narg, c);
1244                                 print_number(ip, narg, c);
1245                                 putchar(',');
1246                                 print_mask_arg(sysdecode_semget_flags, *ip);
1247                                 ip++;
1248                                 narg--;
1249                                 break;
1250                         case SYS_msgctl:
1251                                 print_number(ip, narg, c);
1252                                 putchar(',');
1253                                 print_integer_arg(sysdecode_msgctl_cmd, *ip);
1254                                 ip++;
1255                                 narg--;
1256                                 break;
1257                         case SYS_shmat:
1258                                 print_number(ip, narg, c);
1259                                 print_number(ip, narg, c);
1260                                 putchar(',');
1261                                 print_mask_arg(sysdecode_shmat_flags, *ip);
1262                                 ip++;
1263                                 narg--;
1264                                 break;
1265                         case SYS_shmctl:
1266                                 print_number(ip, narg, c);
1267                                 putchar(',');
1268                                 print_integer_arg(sysdecode_shmctl_cmd, *ip);
1269                                 ip++;
1270                                 narg--;
1271                                 break;
1272 #ifdef SYS_freebsd12_shm_open
1273                         case SYS_freebsd12_shm_open:
1274                                 if (ip[0] == (uintptr_t)SHM_ANON) {
1275                                         printf("(SHM_ANON");
1276                                         ip++;
1277                                 } else {
1278                                         print_number(ip, narg, c);
1279                                 }
1280                                 putchar(',');
1281                                 print_mask_arg(sysdecode_open_flags, ip[0]);
1282                                 putchar(',');
1283                                 decode_filemode(ip[1]);
1284                                 ip += 2;
1285                                 narg -= 2;
1286                                 break;
1287 #endif
1288                         case SYS_shm_open2:
1289                                 if (ip[0] == (uintptr_t)SHM_ANON) {
1290                                         printf("(SHM_ANON");
1291                                         ip++;
1292                                 } else {
1293                                         print_number(ip, narg, c);
1294                                 }
1295                                 putchar(',');
1296                                 print_mask_arg(sysdecode_open_flags, ip[0]);
1297                                 putchar(',');
1298                                 decode_filemode(ip[1]);
1299                                 putchar(',');
1300                                 print_mask_arg(sysdecode_shmflags, ip[2]);
1301                                 ip += 3;
1302                                 narg -= 3;
1303                                 break;
1304                         case SYS_minherit:
1305                                 print_number(ip, narg, c);
1306                                 print_number(ip, narg, c);
1307                                 putchar(',');
1308                                 print_integer_arg(sysdecode_minherit_inherit,
1309                                     *ip);
1310                                 ip++;
1311                                 narg--;
1312                                 break;
1313                         case SYS_rfork:
1314                                 putchar('(');
1315                                 print_mask_arg(sysdecode_rfork_flags, *ip);
1316                                 ip++;
1317                                 narg--;
1318                                 c = ',';
1319                                 break;
1320                         case SYS_lio_listio:
1321                                 putchar('(');
1322                                 print_integer_arg(sysdecode_lio_listio_mode,
1323                                     *ip);
1324                                 ip++;
1325                                 narg--;
1326                                 c = ',';
1327                                 break;
1328                         case SYS_mlockall:
1329                                 putchar('(');
1330                                 print_mask_arg(sysdecode_mlockall_flags, *ip);
1331                                 ip++;
1332                                 narg--;
1333                                 break;
1334                         case SYS_sched_setscheduler:
1335                                 print_number(ip, narg, c);
1336                                 putchar(',');
1337                                 print_integer_arg(sysdecode_scheduler_policy,
1338                                     *ip);
1339                                 ip++;
1340                                 narg--;
1341                                 break;
1342                         case SYS_sched_get_priority_max:
1343                         case SYS_sched_get_priority_min:
1344                                 putchar('(');
1345                                 print_integer_arg(sysdecode_scheduler_policy,
1346                                     *ip);
1347                                 ip++;
1348                                 narg--;
1349                                 break;
1350                         case SYS_sendfile:
1351                                 print_number(ip, narg, c);
1352                                 print_number(ip, narg, c);
1353                                 print_number(ip, narg, c);
1354                                 print_number(ip, narg, c);
1355                                 print_number(ip, narg, c);
1356                                 print_number(ip, narg, c);
1357                                 putchar(',');
1358                                 print_mask_arg(sysdecode_sendfile_flags, *ip);
1359                                 ip++;
1360                                 narg--;
1361                                 break;
1362                         case SYS_kldsym:
1363                                 print_number(ip, narg, c);
1364                                 putchar(',');
1365                                 print_integer_arg(sysdecode_kldsym_cmd, *ip);
1366                                 ip++;
1367                                 narg--;
1368                                 break;
1369                         case SYS_sigprocmask:
1370                                 putchar('(');
1371                                 print_integer_arg(sysdecode_sigprocmask_how,
1372                                     *ip);
1373                                 ip++;
1374                                 narg--;
1375                                 c = ',';
1376                                 break;
1377                         case SYS___acl_get_file:
1378                         case SYS___acl_set_file:
1379                         case SYS___acl_get_fd:
1380                         case SYS___acl_set_fd:
1381                         case SYS___acl_delete_file:
1382                         case SYS___acl_delete_fd:
1383                         case SYS___acl_aclcheck_file:
1384                         case SYS___acl_aclcheck_fd:
1385                         case SYS___acl_get_link:
1386                         case SYS___acl_set_link:
1387                         case SYS___acl_delete_link:
1388                         case SYS___acl_aclcheck_link:
1389                                 print_number(ip, narg, c);
1390                                 putchar(',');
1391                                 print_integer_arg(sysdecode_acltype, *ip);
1392                                 ip++;
1393                                 narg--;
1394                                 break;
1395                         case SYS_sigaction:
1396                                 putchar('(');
1397                                 print_signal(*ip);
1398                                 ip++;
1399                                 narg--;
1400                                 c = ',';
1401                                 break;
1402                         case SYS_extattrctl:
1403                                 print_number(ip, narg, c);
1404                                 putchar(',');
1405                                 print_integer_arg(sysdecode_extattrnamespace,
1406                                     *ip);
1407                                 ip++;
1408                                 narg--;
1409                                 break;
1410                         case SYS_nmount:
1411                                 print_number(ip, narg, c);
1412                                 print_number(ip, narg, c);
1413                                 putchar(',');
1414                                 print_mask_arg(sysdecode_mount_flags, *ip);
1415                                 ip++;
1416                                 narg--;
1417                                 break;
1418                         case SYS_thr_create:
1419                                 print_number(ip, narg, c);
1420                                 print_number(ip, narg, c);
1421                                 putchar(',');
1422                                 print_mask_arg(sysdecode_thr_create_flags, *ip);
1423                                 ip++;
1424                                 narg--;
1425                                 break;
1426                         case SYS_thr_kill:
1427                                 print_number(ip, narg, c);
1428                                 putchar(',');
1429                                 print_signal(*ip);
1430                                 ip++;
1431                                 narg--;
1432                                 break;
1433                         case SYS_kldunloadf:
1434                                 print_number(ip, narg, c);
1435                                 putchar(',');
1436                                 print_integer_arg(sysdecode_kldunload_flags,
1437                                     *ip);
1438                                 ip++;
1439                                 narg--;
1440                                 break;
1441                         case SYS_linkat:
1442                         case SYS_renameat:
1443                         case SYS_symlinkat:
1444                                 print_number(ip, narg, c);
1445                                 putchar(',');
1446                                 print_integer_arg_valid(sysdecode_atfd, *ip);
1447                                 ip++;
1448                                 narg--;
1449                                 print_number(ip, narg, c);
1450                                 break;
1451                         case SYS_cap_fcntls_limit:
1452                                 print_number(ip, narg, c);
1453                                 putchar(',');
1454                                 arg = *ip;
1455                                 ip++;
1456                                 narg--;
1457                                 print_mask_arg32(sysdecode_cap_fcntlrights, arg);
1458                                 break;
1459                         case SYS_posix_fadvise:
1460                                 print_number(ip, narg, c);
1461                                 print_number(ip, narg, c);
1462                                 print_number(ip, narg, c);
1463                                 (void)putchar(',');
1464                                 print_integer_arg(sysdecode_fadvice, *ip);
1465                                 ip++;
1466                                 narg--;
1467                                 break;
1468                         case SYS_procctl:
1469                                 putchar('(');
1470                                 print_integer_arg(sysdecode_idtype, *ip);
1471                                 c = ',';
1472                                 ip++;
1473                                 narg--;
1474                                 print_number64(first, ip, narg, c);
1475                                 putchar(',');
1476                                 print_integer_arg(sysdecode_procctl_cmd, *ip);
1477                                 ip++;
1478                                 narg--;
1479                                 break;
1480                         case SYS__umtx_op: {
1481                                 int op;
1482
1483                                 print_number(ip, narg, c);
1484                                 putchar(',');
1485                                 if (print_mask_arg_part(sysdecode_umtx_op_flags,
1486                                     *ip, &op))
1487                                         putchar('|');
1488                                 print_integer_arg(sysdecode_umtx_op, op);
1489                                 putchar('>');
1490                                 switch (*ip) {
1491                                 case UMTX_OP_CV_WAIT:
1492                                         ip++;
1493                                         narg--;
1494                                         putchar(',');
1495                                         print_mask_argul(
1496                                             sysdecode_umtx_cvwait_flags, *ip);
1497                                         break;
1498                                 case UMTX_OP_RW_RDLOCK:
1499                                         ip++;
1500                                         narg--;
1501                                         putchar(',');
1502                                         print_mask_argul(
1503                                             sysdecode_umtx_rwlock_flags, *ip);
1504                                         break;
1505                                 }
1506                                 ip++;
1507                                 narg--;
1508                                 break;
1509                         }
1510                         case SYS_ftruncate:
1511                         case SYS_truncate:
1512                                 print_number(ip, narg, c);
1513                                 print_number64(first, ip, narg, c);
1514                                 break;
1515                         case SYS_fchownat:
1516                                 print_number(ip, narg, c);
1517                                 print_number(ip, narg, c);
1518                                 print_number(ip, narg, c);
1519                                 break;
1520                         case SYS_fstatat:
1521                         case SYS_utimensat:
1522                                 print_number(ip, narg, c);
1523                                 print_number(ip, narg, c);
1524                                 break;
1525                         case SYS_unlinkat:
1526                                 print_number(ip, narg, c);
1527                                 break;
1528                         case SYS_sysarch:
1529                                 putchar('(');
1530                                 print_integer_arg(sysdecode_sysarch_number, *ip);
1531                                 ip++;
1532                                 narg--;
1533                                 c = ',';
1534                                 break;
1535                         case SYS_getitimer:
1536                         case SYS_setitimer:
1537                                 putchar('(');
1538                                 print_integer_arg(sysdecode_itimer, *ip);
1539                                 ip++;
1540                                 narg--;
1541                                 c = ',';
1542                                 break;
1543                         }
1544                         switch (ktr->ktr_code) {
1545                         case SYS_chflagsat:
1546                         case SYS_fchownat:
1547                         case SYS_faccessat:
1548                         case SYS_fchmodat:
1549                         case SYS_fstatat:
1550                         case SYS_linkat:
1551                         case SYS_unlinkat:
1552                         case SYS_utimensat:
1553                                 putchar(',');
1554                                 print_mask_arg0(sysdecode_atflags, *ip);
1555                                 ip++;
1556                                 narg--;
1557                                 break;
1558                         }
1559         *resc = c;
1560         *resip = ip;
1561         *resnarg = narg;
1562 }
1563
1564 void
1565 ktrsysret(struct ktr_sysret *ktr, u_int sv_flags)
1566 {
1567         register_t ret = ktr->ktr_retval;
1568         int error = ktr->ktr_error;
1569
1570         syscallname(ktr->ktr_code, sv_flags);
1571         printf(" ");
1572
1573         if (error == 0) {
1574                 if (fancy) {
1575                         printf("%ld", (long)ret);
1576                         if (ret < 0 || ret > 9)
1577                                 printf("/%#lx", (unsigned long)ret);
1578                 } else {
1579                         if (decimal)
1580                                 printf("%ld", (long)ret);
1581                         else
1582                                 printf("%#lx", (unsigned long)ret);
1583                 }
1584         } else if (error == ERESTART)
1585                 printf("RESTART");
1586         else if (error == EJUSTRETURN)
1587                 printf("JUSTRETURN");
1588         else {
1589                 printf("-1 errno %d", sysdecode_freebsd_to_abi_errno(
1590                     syscallabi(sv_flags), error));
1591                 if (fancy)
1592                         printf(" %s", strerror(ktr->ktr_error));
1593         }
1594         putchar('\n');
1595 }
1596
1597 void
1598 ktrnamei(char *cp, int len)
1599 {
1600         printf("\"%.*s\"\n", len, cp);
1601 }
1602
1603 void
1604 hexdump(char *p, int len, int screenwidth)
1605 {
1606         int n, i;
1607         int width;
1608
1609         width = 0;
1610         do {
1611                 width += 2;
1612                 i = 13;                 /* base offset */
1613                 i += (width / 2) + 1;   /* spaces every second byte */
1614                 i += (width * 2);       /* width of bytes */
1615                 i += 3;                 /* "  |" */
1616                 i += width;             /* each byte */
1617                 i += 1;                 /* "|" */
1618         } while (i < screenwidth);
1619         width -= 2;
1620
1621         for (n = 0; n < len; n += width) {
1622                 for (i = n; i < n + width; i++) {
1623                         if ((i % width) == 0) { /* beginning of line */
1624                                 printf("       0x%04x", i);
1625                         }
1626                         if ((i % 2) == 0) {
1627                                 printf(" ");
1628                         }
1629                         if (i < len)
1630                                 printf("%02x", p[i] & 0xff);
1631                         else
1632                                 printf("  ");
1633                 }
1634                 printf("  |");
1635                 for (i = n; i < n + width; i++) {
1636                         if (i >= len)
1637                                 break;
1638                         if (p[i] >= ' ' && p[i] <= '~')
1639                                 printf("%c", p[i]);
1640                         else
1641                                 printf(".");
1642                 }
1643                 printf("|\n");
1644         }
1645         if ((i % width) != 0)
1646                 printf("\n");
1647 }
1648
1649 void
1650 visdump(char *dp, int datalen, int screenwidth)
1651 {
1652         int col = 0;
1653         char *cp;
1654         int width;
1655         char visbuf[5];
1656
1657         printf("       \"");
1658         col = 8;
1659         for (;datalen > 0; datalen--, dp++) {
1660                 vis(visbuf, *dp, VIS_CSTYLE | VIS_NOLOCALE, *(dp+1));
1661                 cp = visbuf;
1662                 /*
1663                  * Keep track of printables and
1664                  * space chars (like fold(1)).
1665                  */
1666                 if (col == 0) {
1667                         putchar('\t');
1668                         col = 8;
1669                 }
1670                 switch(*cp) {
1671                 case '\n':
1672                         col = 0;
1673                         putchar('\n');
1674                         continue;
1675                 case '\t':
1676                         width = 8 - (col&07);
1677                         break;
1678                 default:
1679                         width = strlen(cp);
1680                 }
1681                 if (col + width > (screenwidth-2)) {
1682                         printf("\\\n\t");
1683                         col = 8;
1684                 }
1685                 col += width;
1686                 do {
1687                         putchar(*cp++);
1688                 } while (*cp);
1689         }
1690         if (col == 0)
1691                 printf("       ");
1692         printf("\"\n");
1693 }
1694
1695 void
1696 ktrgenio(struct ktr_genio *ktr, int len)
1697 {
1698         int datalen = len - sizeof (struct ktr_genio);
1699         char *dp = (char *)ktr + sizeof (struct ktr_genio);
1700         static int screenwidth = 0;
1701         int i, binary;
1702
1703         printf("fd %d %s %d byte%s\n", ktr->ktr_fd,
1704                 ktr->ktr_rw == UIO_READ ? "read" : "wrote", datalen,
1705                 datalen == 1 ? "" : "s");
1706         if (suppressdata)
1707                 return;
1708         if (screenwidth == 0) {
1709                 struct winsize ws;
1710
1711                 if (fancy && ioctl(fileno(stderr), TIOCGWINSZ, &ws) != -1 &&
1712                     ws.ws_col > 8)
1713                         screenwidth = ws.ws_col;
1714                 else
1715                         screenwidth = 80;
1716         }
1717         if (maxdata && datalen > maxdata)
1718                 datalen = maxdata;
1719
1720         for (i = 0, binary = 0; i < datalen && binary == 0; i++)  {
1721                 if (dp[i] >= 32 && dp[i] < 127)
1722                         continue;
1723                 if (dp[i] == 10 || dp[i] == 13 || dp[i] == 0 || dp[i] == 9)
1724                         continue;
1725                 binary = 1;
1726         }
1727         if (binary)
1728                 hexdump(dp, datalen, screenwidth);
1729         else
1730                 visdump(dp, datalen, screenwidth);
1731 }
1732
1733 void
1734 ktrpsig(struct ktr_psig *psig)
1735 {
1736         const char *str;
1737
1738         print_signal(psig->signo);
1739         if (psig->action == SIG_DFL) {
1740                 printf(" SIG_DFL");
1741         } else {
1742                 printf(" caught handler=0x%lx mask=0x%x",
1743                     (u_long)psig->action, psig->mask.__bits[0]);
1744         }
1745         printf(" code=");
1746         str = sysdecode_sigcode(psig->signo, psig->code);
1747         if (str != NULL)
1748                 printf("%s", str);
1749         else
1750                 printf("<invalid=%#x>", psig->code);
1751         putchar('\n');
1752 }
1753
1754 void
1755 ktrcsw_old(struct ktr_csw_old *cs)
1756 {
1757         printf("%s %s\n", cs->out ? "stop" : "resume",
1758                 cs->user ? "user" : "kernel");
1759 }
1760
1761 void
1762 ktrcsw(struct ktr_csw *cs)
1763 {
1764         printf("%s %s \"%s\"\n", cs->out ? "stop" : "resume",
1765             cs->user ? "user" : "kernel", cs->wmesg);
1766 }
1767
1768 void
1769 ktruser(int len, void *p)
1770 {
1771         unsigned char *cp;
1772
1773         if (sysdecode_utrace(stdout, p, len)) {
1774                 printf("\n");
1775                 return;
1776         }
1777
1778         printf("%d ", len);
1779         cp = p;
1780         while (len--)
1781                 if (decimal)
1782                         printf(" %d", *cp++);
1783                 else
1784                         printf(" %02x", *cp++);
1785         printf("\n");
1786 }
1787
1788 void
1789 ktrcaprights(cap_rights_t *rightsp)
1790 {
1791
1792         printf("cap_rights_t ");
1793         sysdecode_cap_rights(stdout, rightsp);
1794         printf("\n");
1795 }
1796
1797 static void
1798 ktrtimeval(struct timeval *tv)
1799 {
1800
1801         printf("{%ld, %ld}", (long)tv->tv_sec, tv->tv_usec);
1802 }
1803
1804 void
1805 ktritimerval(struct itimerval *it)
1806 {
1807
1808         printf("itimerval { .interval = ");
1809         ktrtimeval(&it->it_interval);
1810         printf(", .value = ");
1811         ktrtimeval(&it->it_value);
1812         printf(" }\n");
1813 }
1814
1815 void
1816 ktrsockaddr(struct sockaddr *sa)
1817 {
1818 /*
1819  TODO: Support additional address families
1820         #include <netsmb/netbios.h>
1821         struct sockaddr_nb      *nb;
1822 */
1823         const char *str;
1824         char addr[64];
1825
1826         /*
1827          * note: ktrstruct() has already verified that sa points to a
1828          * buffer at least sizeof(struct sockaddr) bytes long and exactly
1829          * sa->sa_len bytes long.
1830          */
1831         printf("struct sockaddr { ");
1832         str = sysdecode_sockaddr_family(sa->sa_family);
1833         if (str != NULL)
1834                 printf("%s", str);
1835         else
1836                 printf("<invalid=%d>", sa->sa_family);
1837         printf(", ");
1838
1839 #define check_sockaddr_len(n)                                   \
1840         if (sa_##n.s##n##_len < sizeof(struct sockaddr_##n)) {  \
1841                 printf("invalid");                              \
1842                 break;                                          \
1843         }
1844
1845         switch(sa->sa_family) {
1846         case AF_INET: {
1847                 struct sockaddr_in sa_in;
1848
1849                 memset(&sa_in, 0, sizeof(sa_in));
1850                 memcpy(&sa_in, sa, sa->sa_len);
1851                 check_sockaddr_len(in);
1852                 inet_ntop(AF_INET, &sa_in.sin_addr, addr, sizeof addr);
1853                 printf("%s:%u", addr, ntohs(sa_in.sin_port));
1854                 break;
1855         }
1856         case AF_INET6: {
1857                 struct sockaddr_in6 sa_in6;
1858
1859                 memset(&sa_in6, 0, sizeof(sa_in6));
1860                 memcpy(&sa_in6, sa, sa->sa_len);
1861                 check_sockaddr_len(in6);
1862                 getnameinfo((struct sockaddr *)&sa_in6, sizeof(sa_in6),
1863                     addr, sizeof(addr), NULL, 0, NI_NUMERICHOST);
1864                 printf("[%s]:%u", addr, htons(sa_in6.sin6_port));
1865                 break;
1866         }
1867         case AF_UNIX: {
1868                 struct sockaddr_un sa_un;
1869
1870                 memset(&sa_un, 0, sizeof(sa_un));
1871                 memcpy(&sa_un, sa, sa->sa_len);
1872                 printf("%.*s", (int)sizeof(sa_un.sun_path), sa_un.sun_path);
1873                 break;
1874         }
1875         default:
1876                 printf("unknown address family");
1877         }
1878         printf(" }\n");
1879 }
1880
1881 void
1882 ktrstat(struct stat *statp)
1883 {
1884         char mode[12], timestr[PATH_MAX + 4];
1885         struct passwd *pwd;
1886         struct group  *grp;
1887         struct tm *tm;
1888
1889         /*
1890          * note: ktrstruct() has already verified that statp points to a
1891          * buffer exactly sizeof(struct stat) bytes long.
1892          */
1893         printf("struct stat {");
1894         printf("dev=%ju, ino=%ju, ",
1895                 (uintmax_t)statp->st_dev, (uintmax_t)statp->st_ino);
1896         if (!resolv)
1897                 printf("mode=0%jo, ", (uintmax_t)statp->st_mode);
1898         else {
1899                 strmode(statp->st_mode, mode);
1900                 printf("mode=%s, ", mode);
1901         }
1902         printf("nlink=%ju, ", (uintmax_t)statp->st_nlink);
1903         if (!resolv) {
1904                 pwd = NULL;
1905         } else {
1906 #ifdef WITH_CASPER
1907                 if (cappwd != NULL)
1908                         pwd = cap_getpwuid(cappwd, statp->st_uid);
1909                 else
1910 #endif
1911                         pwd = getpwuid(statp->st_uid);
1912         }
1913         if (pwd == NULL)
1914                 printf("uid=%ju, ", (uintmax_t)statp->st_uid);
1915         else
1916                 printf("uid=\"%s\", ", pwd->pw_name);
1917         if (!resolv) {
1918                 grp = NULL;
1919         } else {
1920 #ifdef WITH_CASPER
1921                 if (capgrp != NULL)
1922                         grp = cap_getgrgid(capgrp, statp->st_gid);
1923                 else
1924 #endif
1925                         grp = getgrgid(statp->st_gid);
1926         }
1927         if (grp == NULL)
1928                 printf("gid=%ju, ", (uintmax_t)statp->st_gid);
1929         else
1930                 printf("gid=\"%s\", ", grp->gr_name);
1931         printf("rdev=%ju, ", (uintmax_t)statp->st_rdev);
1932         printf("atime=");
1933         if (!resolv)
1934                 printf("%jd", (intmax_t)statp->st_atim.tv_sec);
1935         else {
1936                 tm = localtime(&statp->st_atim.tv_sec);
1937                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1938                 printf("\"%s\"", timestr);
1939         }
1940         if (statp->st_atim.tv_nsec != 0)
1941                 printf(".%09ld, ", statp->st_atim.tv_nsec);
1942         else
1943                 printf(", ");
1944         printf("mtime=");
1945         if (!resolv)
1946                 printf("%jd", (intmax_t)statp->st_mtim.tv_sec);
1947         else {
1948                 tm = localtime(&statp->st_mtim.tv_sec);
1949                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1950                 printf("\"%s\"", timestr);
1951         }
1952         if (statp->st_mtim.tv_nsec != 0)
1953                 printf(".%09ld, ", statp->st_mtim.tv_nsec);
1954         else
1955                 printf(", ");
1956         printf("ctime=");
1957         if (!resolv)
1958                 printf("%jd", (intmax_t)statp->st_ctim.tv_sec);
1959         else {
1960                 tm = localtime(&statp->st_ctim.tv_sec);
1961                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1962                 printf("\"%s\"", timestr);
1963         }
1964         if (statp->st_ctim.tv_nsec != 0)
1965                 printf(".%09ld, ", statp->st_ctim.tv_nsec);
1966         else
1967                 printf(", ");
1968         printf("birthtime=");
1969         if (!resolv)
1970                 printf("%jd", (intmax_t)statp->st_birthtim.tv_sec);
1971         else {
1972                 tm = localtime(&statp->st_birthtim.tv_sec);
1973                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1974                 printf("\"%s\"", timestr);
1975         }
1976         if (statp->st_birthtim.tv_nsec != 0)
1977                 printf(".%09ld, ", statp->st_birthtim.tv_nsec);
1978         else
1979                 printf(", ");
1980         printf("size=%jd, blksize=%ju, blocks=%jd, flags=0x%x",
1981                 (uintmax_t)statp->st_size, (uintmax_t)statp->st_blksize,
1982                 (intmax_t)statp->st_blocks, statp->st_flags);
1983         printf(" }\n");
1984 }
1985
1986 void
1987 ktrbitset(char *name, struct bitset *set, size_t setlen)
1988 {
1989         int i, maxi, c = 0;
1990
1991         if (setlen > INT32_MAX)
1992                 setlen = INT32_MAX;
1993         maxi = setlen * CHAR_BIT;
1994         printf("%s [ ", name);
1995         for (i = 0; i < maxi; i++) {
1996                 if (!BIT_ISSET(setlen, i, set))
1997                         continue;
1998                 if (c == 0)
1999                         printf("%d", i);
2000                 else
2001                         printf(", %d", i);
2002                 c++;
2003         }
2004         if (c == 0)
2005                 printf(" empty ]\n");
2006         else
2007                 printf(" ]\n");
2008 }
2009
2010 void
2011 ktrstruct(char *buf, size_t buflen)
2012 {
2013         char *name, *data;
2014         size_t namelen, datalen;
2015         int i;
2016         cap_rights_t rights;
2017         struct itimerval it;
2018         struct stat sb;
2019         struct sockaddr_storage ss;
2020         struct bitset *set;
2021
2022         for (name = buf, namelen = 0;
2023              namelen < buflen && name[namelen] != '\0';
2024              ++namelen)
2025                 /* nothing */;
2026         if (namelen == buflen)
2027                 goto invalid;
2028         if (name[namelen] != '\0')
2029                 goto invalid;
2030         data = buf + namelen + 1;
2031         datalen = buflen - namelen - 1;
2032         if (datalen == 0)
2033                 goto invalid;
2034         /* sanity check */
2035         for (i = 0; i < (int)namelen; ++i)
2036                 if (!isalpha(name[i]) && name[i] != '_')
2037                         goto invalid;
2038         if (strcmp(name, "caprights") == 0) {
2039                 if (datalen != sizeof(cap_rights_t))
2040                         goto invalid;
2041                 memcpy(&rights, data, datalen);
2042                 ktrcaprights(&rights);
2043         } else if (strcmp(name, "itimerval") == 0) {
2044                 if (datalen != sizeof(struct itimerval))
2045                         goto invalid;
2046                 memcpy(&it, data, datalen);
2047                 ktritimerval(&it);
2048         } else if (strcmp(name, "stat") == 0) {
2049                 if (datalen != sizeof(struct stat))
2050                         goto invalid;
2051                 memcpy(&sb, data, datalen);
2052                 ktrstat(&sb);
2053         } else if (strcmp(name, "sockaddr") == 0) {
2054                 if (datalen > sizeof(ss))
2055                         goto invalid;
2056                 memcpy(&ss, data, datalen);
2057                 if (datalen != ss.ss_len)
2058                         goto invalid;
2059                 ktrsockaddr((struct sockaddr *)&ss);
2060         } else if (strcmp(name, "cpuset_t") == 0) {
2061                 if (datalen < 1)
2062                         goto invalid;
2063                 set = malloc(datalen);
2064                 if (set == NULL)
2065                         errx(1, "%s", strerror(ENOMEM));
2066                 memcpy(set, data, datalen);
2067                 ktrbitset(name, set, datalen);
2068                 free(set);
2069         } else {
2070 #ifdef SYSDECODE_HAVE_LINUX
2071                 if (ktrstruct_linux(name, data, datalen) == false)
2072 #endif
2073                         printf("unknown structure\n");
2074         }
2075         return;
2076 invalid:
2077         printf("invalid record\n");
2078 }
2079
2080 void
2081 ktrcapfail(struct ktr_cap_fail *ktr)
2082 {
2083         switch (ktr->cap_type) {
2084         case CAPFAIL_NOTCAPABLE:
2085                 /* operation on fd with insufficient capabilities */
2086                 printf("operation requires ");
2087                 sysdecode_cap_rights(stdout, &ktr->cap_needed);
2088                 printf(", descriptor holds ");
2089                 sysdecode_cap_rights(stdout, &ktr->cap_held);
2090                 break;
2091         case CAPFAIL_INCREASE:
2092                 /* requested more capabilities than fd already has */
2093                 printf("attempt to increase capabilities from ");
2094                 sysdecode_cap_rights(stdout, &ktr->cap_held);
2095                 printf(" to ");
2096                 sysdecode_cap_rights(stdout, &ktr->cap_needed);
2097                 break;
2098         case CAPFAIL_SYSCALL:
2099                 /* called restricted syscall */
2100                 printf("disallowed system call");
2101                 break;
2102         case CAPFAIL_LOOKUP:
2103                 /* absolute or AT_FDCWD path, ".." path, etc. */
2104                 printf("restricted VFS lookup");
2105                 break;
2106         default:
2107                 printf("unknown capability failure: ");
2108                 sysdecode_cap_rights(stdout, &ktr->cap_needed);
2109                 printf(" ");
2110                 sysdecode_cap_rights(stdout, &ktr->cap_held);
2111                 break;
2112         }
2113         printf("\n");
2114 }
2115
2116 void
2117 ktrfault(struct ktr_fault *ktr)
2118 {
2119
2120         printf("0x%jx ", (uintmax_t)ktr->vaddr);
2121         print_mask_arg(sysdecode_vmprot, ktr->type);
2122         printf("\n");
2123 }
2124
2125 void
2126 ktrfaultend(struct ktr_faultend *ktr)
2127 {
2128         const char *str;
2129
2130         str = sysdecode_vmresult(ktr->result);
2131         if (str != NULL)
2132                 printf("%s", str);
2133         else
2134                 printf("<invalid=%d>", ktr->result);
2135         printf("\n");
2136 }
2137
2138 void
2139 ktrkevent(struct kevent *kev)
2140 {
2141
2142         printf("{ ident=");
2143         switch (kev->filter) {
2144         case EVFILT_READ:
2145         case EVFILT_WRITE:
2146         case EVFILT_VNODE:
2147         case EVFILT_PROC:
2148         case EVFILT_TIMER:
2149         case EVFILT_PROCDESC:
2150         case EVFILT_EMPTY:
2151                 printf("%ju", (uintmax_t)kev->ident);
2152                 break;
2153         case EVFILT_SIGNAL:
2154                 print_signal(kev->ident);
2155                 break;
2156         default:
2157                 printf("%p", (void *)kev->ident);
2158         }
2159         printf(", filter=");
2160         print_integer_arg(sysdecode_kevent_filter, kev->filter);
2161         printf(", flags=");
2162         print_mask_arg0(sysdecode_kevent_flags, kev->flags);
2163         printf(", fflags=");
2164         sysdecode_kevent_fflags(stdout, kev->filter, kev->fflags,
2165             decimal ? 10 : 16);
2166         printf(", data=%#jx, udata=%p }", (uintmax_t)kev->data, kev->udata);
2167 }
2168
2169 void
2170 ktrstructarray(struct ktr_struct_array *ksa, size_t buflen)
2171 {
2172         struct kevent kev;
2173         char *name, *data;
2174         size_t namelen, datalen;
2175         int i;
2176         bool first;
2177
2178         buflen -= sizeof(*ksa);
2179         for (name = (char *)(ksa + 1), namelen = 0;
2180              namelen < buflen && name[namelen] != '\0';
2181              ++namelen)
2182                 /* nothing */;
2183         if (namelen == buflen)
2184                 goto invalid;
2185         if (name[namelen] != '\0')
2186                 goto invalid;
2187         /* sanity check */
2188         for (i = 0; i < (int)namelen; ++i)
2189                 if (!isalnum(name[i]) && name[i] != '_')
2190                         goto invalid;
2191         data = name + namelen + 1;
2192         datalen = buflen - namelen - 1;
2193         printf("struct %s[] = { ", name);
2194         first = true;
2195         for (; datalen >= ksa->struct_size;
2196             data += ksa->struct_size, datalen -= ksa->struct_size) {
2197                 if (!first)
2198                         printf("\n             ");
2199                 else
2200                         first = false;
2201                 if (strcmp(name, "kevent") == 0) {
2202                         if (ksa->struct_size != sizeof(kev))
2203                                 goto bad_size;
2204                         memcpy(&kev, data, sizeof(kev));
2205                         ktrkevent(&kev);
2206                 } else if (strcmp(name, "kevent_freebsd11") == 0) {
2207                         struct kevent_freebsd11 kev11;
2208
2209                         if (ksa->struct_size != sizeof(kev11))
2210                                 goto bad_size;
2211                         memcpy(&kev11, data, sizeof(kev11));
2212                         memset(&kev, 0, sizeof(kev));
2213                         kev.ident = kev11.ident;
2214                         kev.filter = kev11.filter;
2215                         kev.flags = kev11.flags;
2216                         kev.fflags = kev11.fflags;
2217                         kev.data = kev11.data;
2218                         kev.udata = kev11.udata;
2219                         ktrkevent(&kev);
2220 #ifdef _WANT_KEVENT32
2221                 } else if (strcmp(name, "kevent32") == 0) {
2222                         struct kevent32 kev32;
2223
2224                         if (ksa->struct_size != sizeof(kev32))
2225                                 goto bad_size;
2226                         memcpy(&kev32, data, sizeof(kev32));
2227                         memset(&kev, 0, sizeof(kev));
2228                         kev.ident = kev32.ident;
2229                         kev.filter = kev32.filter;
2230                         kev.flags = kev32.flags;
2231                         kev.fflags = kev32.fflags;
2232 #if BYTE_ORDER == BIG_ENDIAN
2233                         kev.data = kev32.data2 | ((int64_t)kev32.data1 << 32);
2234 #else
2235                         kev.data = kev32.data1 | ((int64_t)kev32.data2 << 32);
2236 #endif
2237                         kev.udata = (void *)(uintptr_t)kev32.udata;
2238                         ktrkevent(&kev);
2239                 } else if (strcmp(name, "kevent32_freebsd11") == 0) {
2240                         struct kevent32_freebsd11 kev32;
2241
2242                         if (ksa->struct_size != sizeof(kev32))
2243                                 goto bad_size;
2244                         memcpy(&kev32, data, sizeof(kev32));
2245                         memset(&kev, 0, sizeof(kev));
2246                         kev.ident = kev32.ident;
2247                         kev.filter = kev32.filter;
2248                         kev.flags = kev32.flags;
2249                         kev.fflags = kev32.fflags;
2250                         kev.data = kev32.data;
2251                         kev.udata = (void *)(uintptr_t)kev32.udata;
2252                         ktrkevent(&kev);
2253 #endif
2254                 } else {
2255                         printf("<unknown structure> }\n");
2256                         return;
2257                 }
2258         }
2259         printf(" }\n");
2260         return;
2261 invalid:
2262         printf("invalid record\n");
2263         return;
2264 bad_size:
2265         printf("<bad size> }\n");
2266         return;
2267 }
2268
2269 void
2270 usage(void)
2271 {
2272         fprintf(stderr, "usage: kdump [-dEnlHRrSsTA] [-f trfile] "
2273             "[-m maxdata] [-p pid] [-t trstr]\n");
2274         exit(1);
2275 }