usr.bin/kdump/kdump.c

   1 /*-
   2  * Copyright (c) 1988, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29
  30 #ifndef lint
  31 static const char copyright[] =
  32 "@(#) Copyright (c) 1988, 1993\n\
  33         The Regents of the University of California.  All rights reserved.\n";
  34 #endif /* not lint */
  35
  36 #ifndef lint
  37 #if 0
  38 static char sccsid[] = "@(#)kdump.c     8.1 (Berkeley) 6/6/93";
  39 #endif
  40 #endif /* not lint */
  41 #include <sys/cdefs.h>
  42 __FBSDID("$FreeBSD$");
  43
  44 #define _WANT_KERNEL_ERRNO
  45 #include <sys/param.h>
  46 #include <sys/capsicum.h>
  47 #include <sys/errno.h>
  48 #include <sys/time.h>
  49 #include <sys/uio.h>
  50 #include <sys/ktrace.h>
  51 #include <sys/ioctl.h>
  52 #include <sys/socket.h>
  53 #include <sys/stat.h>
  54 #include <sys/sysent.h>
  55 #include <sys/umtx.h>
  56 #include <sys/un.h>
  57 #include <sys/queue.h>
  58 #include <sys/wait.h>
  59 #ifdef HAVE_LIBCASPER
  60 #include <sys/nv.h>
  61 #endif
  62 #include <arpa/inet.h>
  63 #include <netinet/in.h>
  64 #include <ctype.h>
  65 #include <capsicum_helpers.h>
  66 #include <err.h>
  67 #include <grp.h>
  68 #include <inttypes.h>
  69 #include <locale.h>
  70 #include <netdb.h>
  71 #include <nl_types.h>
  72 #include <pwd.h>
  73 #include <stddef.h>
  74 #include <stdio.h>
  75 #include <stdlib.h>
  76 #include <string.h>
  77 #include <sysdecode.h>
  78 #include <time.h>
  79 #include <unistd.h>
  80 #include <vis.h>
  81 #include "ktrace.h"
  82
  83 #ifdef HAVE_LIBCASPER
  84 #include <libcasper.h>
  85
  86 #include <casper/cap_grp.h>
  87 #include <casper/cap_pwd.h>
  88 #endif
  89
  90 u_int abidump(struct ktr_header *);
  91 int fetchprocinfo(struct ktr_header *, u_int *);
  92 int fread_tail(void *, int, int);
  93 void dumpheader(struct ktr_header *);
  94 void ktrsyscall(struct ktr_syscall *, u_int);
  95 void ktrsysret(struct ktr_sysret *, u_int);
  96 void ktrnamei(char *, int);
  97 void hexdump(char *, int, int);
  98 void visdump(char *, int, int);
  99 void ktrgenio(struct ktr_genio *, int);
 100 void ktrpsig(struct ktr_psig *);
 101 void ktrcsw(struct ktr_csw *);
 102 void ktrcsw_old(struct ktr_csw_old *);
 103 void ktruser(int, void *);
 104 void ktrcaprights(cap_rights_t *);
 105 void ktritimerval(struct itimerval *it);
 106 void ktrsockaddr(struct sockaddr *);
 107 void ktrstat(struct stat *);
 108 void ktrstruct(char *, size_t);
 109 void ktrcapfail(struct ktr_cap_fail *);
 110 void ktrfault(struct ktr_fault *);
 111 void ktrfaultend(struct ktr_faultend *);
 112 void usage(void);
 113
 114 #define TIMESTAMP_NONE          0x0
 115 #define TIMESTAMP_ABSOLUTE      0x1
 116 #define TIMESTAMP_ELAPSED       0x2
 117 #define TIMESTAMP_RELATIVE      0x4
 118
 119 static int timestamp, decimal, fancy = 1, suppressdata, tail, threads, maxdata,
 120     resolv = 0, abiflag = 0, syscallno = 0;
 121 static const char *tracefile = DEF_TRACEFILE;
 122 static struct ktr_header ktr_header;
 123
 124 #define TIME_FORMAT     "%b %e %T %Y"
 125 #define eqs(s1, s2)     (strcmp((s1), (s2)) == 0)
 126
 127 #define print_number64(first,i,n,c) do {                                \
 128         uint64_t __v;                                                   \
 129                                                                         \
 130         if (quad_align && (((ptrdiff_t)((i) - (first))) & 1) == 1) {    \
 131                 (i)++;                                                  \
 132                 (n)--;                                                  \
 133         }                                                               \
 134         if (quad_slots == 2)                                            \
 135                 __v = (uint64_t)(uint32_t)(i)[0] |                      \
 136                     ((uint64_t)(uint32_t)(i)[1]) << 32;                 \
 137         else                                                            \
 138                 __v = (uint64_t)*(i);                                   \
 139         if (decimal)                                                    \
 140                 printf("%c%jd", (c), (intmax_t)__v);                    \
 141         else                                                            \
 142                 printf("%c%#jx", (c), (uintmax_t)__v);                  \
 143         (i) += quad_slots;                                              \
 144         (n) -= quad_slots;                                              \
 145         (c) = ',';                                                      \
 146 } while (0)
 147
 148 #define print_number(i,n,c) do {                                        \
 149         if (decimal)                                                    \
 150                 printf("%c%jd", c, (intmax_t)*i);                       \
 151         else                                                            \
 152                 printf("%c%#jx", c, (uintmax_t)(u_register_t)*i);       \
 153         i++;                                                            \
 154         n--;                                                            \
 155         c = ',';                                                        \
 156 } while (0)
 157
 158 struct proc_info
 159 {
 160         TAILQ_ENTRY(proc_info)  info;
 161         u_int                   sv_flags;
 162         pid_t                   pid;
 163 };
 164
 165 static TAILQ_HEAD(trace_procs, proc_info) trace_procs;
 166
 167 #ifdef HAVE_LIBCASPER
 168 static cap_channel_t *cappwd, *capgrp;
 169 #endif
 170
 171 static void
 172 strerror_init(void)
 173 {
 174
 175         /*
 176          * Cache NLS data before entering capability mode.
 177          * XXXPJD: There should be strerror_init() and strsignal_init() in libc.
 178          */
 179         (void)catopen("libc", NL_CAT_LOCALE);
 180 }
 181
 182 static void
 183 localtime_init(void)
 184 {
 185         time_t ltime;
 186
 187         /*
 188          * Allow localtime(3) to cache /etc/localtime content before entering
 189          * capability mode.
 190          * XXXPJD: There should be localtime_init() in libc.
 191          */
 192         (void)time(&ltime);
 193         (void)localtime(&ltime);
 194 }
 195
 196 #ifdef HAVE_LIBCASPER
 197 static int
 198 cappwdgrp_setup(cap_channel_t **cappwdp, cap_channel_t **capgrpp)
 199 {
 200         cap_channel_t *capcas, *cappwdloc, *capgrploc;
 201         const char *cmds[1], *fields[1];
 202
 203         capcas = cap_init();
 204         if (capcas == NULL) {
 205                 err(1, "unable to create casper process");
 206                 exit(1);
 207         }
 208         cappwdloc = cap_service_open(capcas, "system.pwd");
 209         capgrploc = cap_service_open(capcas, "system.grp");
 210         /* Casper capability no longer needed. */
 211         cap_close(capcas);
 212         if (cappwdloc == NULL || capgrploc == NULL) {
 213                 if (cappwdloc == NULL)
 214                         warn("unable to open system.pwd service");
 215                 if (capgrploc == NULL)
 216                         warn("unable to open system.grp service");
 217                 exit(1);
 218         }
 219         /* Limit system.pwd to only getpwuid() function and pw_name field. */
 220         cmds[0] = "getpwuid";
 221         if (cap_pwd_limit_cmds(cappwdloc, cmds, 1) < 0)
 222                 err(1, "unable to limit system.pwd service");
 223         fields[0] = "pw_name";
 224         if (cap_pwd_limit_fields(cappwdloc, fields, 1) < 0)
 225                 err(1, "unable to limit system.pwd service");
 226         /* Limit system.grp to only getgrgid() function and gr_name field. */
 227         cmds[0] = "getgrgid";
 228         if (cap_grp_limit_cmds(capgrploc, cmds, 1) < 0)
 229                 err(1, "unable to limit system.grp service");
 230         fields[0] = "gr_name";
 231         if (cap_grp_limit_fields(capgrploc, fields, 1) < 0)
 232                 err(1, "unable to limit system.grp service");
 233
 234         *cappwdp = cappwdloc;
 235         *capgrpp = capgrploc;
 236         return (0);
 237 }
 238 #endif  /* HAVE_LIBCASPER */
 239
 240 static void
 241 print_integer_arg(const char *(*decoder)(int), int value)
 242 {
 243         const char *str;
 244
 245         str = decoder(value);
 246         if (str != NULL)
 247                 printf("%s", str);
 248         else {
 249                 if (decimal)
 250                         printf("<invalid=%d>", value);
 251                 else
 252                         printf("<invalid=%#x>", value);
 253         }
 254 }
 255
 256 /* Like print_integer_arg but unknown values are treated as valid. */
 257 static void
 258 print_integer_arg_valid(const char *(*decoder)(int), int value)
 259 {
 260         const char *str;
 261
 262         str = decoder(value);
 263         if (str != NULL)
 264                 printf("%s", str);
 265         else {
 266                 if (decimal)
 267                         printf("%d", value);
 268                 else
 269                         printf("%#x", value);
 270         }
 271 }
 272
 273 static void
 274 print_mask_arg(bool (*decoder)(FILE *, int, int *), int value)
 275 {
 276         bool invalid;
 277         int rem;
 278
 279         printf("%#x<", value);
 280         invalid = !decoder(stdout, value, &rem);
 281         printf(">");
 282         if (invalid)
 283                 printf("<invalid>%u", rem);
 284 }
 285
 286 static void
 287 print_mask_arg0(bool (*decoder)(FILE *, int, int *), int value)
 288 {
 289         bool invalid;
 290         int rem;
 291
 292         if (value == 0) {
 293                 printf("0");
 294                 return;
 295         }
 296         printf("%#x<", value);
 297         invalid = !decoder(stdout, value, &rem);
 298         printf(">");
 299         if (invalid)
 300                 printf("<invalid>%u", rem);
 301 }
 302
 303 static void
 304 decode_fileflags(fflags_t value)
 305 {
 306         bool invalid;
 307         fflags_t rem;
 308
 309         if (value == 0) {
 310                 printf("0");
 311                 return;
 312         }
 313         printf("%#x<", value);
 314         invalid = !sysdecode_fileflags(stdout, value, &rem);
 315         printf(">");
 316         if (invalid)
 317                 printf("<invalid>%u", rem);
 318 }
 319
 320 static void
 321 decode_filemode(int value)
 322 {
 323         bool invalid;
 324         int rem;
 325
 326         if (value == 0) {
 327                 printf("0");
 328                 return;
 329         }
 330         printf("%#o<", value);
 331         invalid = !sysdecode_filemode(stdout, value, &rem);
 332         printf(">");
 333         if (invalid)
 334                 printf("<invalid>%u", rem);
 335 }
 336
 337 static void
 338 print_mask_arg32(bool (*decoder)(FILE *, uint32_t, uint32_t *), uint32_t value)
 339 {
 340         bool invalid;
 341         uint32_t rem;
 342
 343         printf("%#x<", value);
 344         invalid = !decoder(stdout, value, &rem);
 345         printf(">");
 346         if (invalid)
 347                 printf("<invalid>%u", rem);
 348 }
 349
 350 static void
 351 print_mask_argul(bool (*decoder)(FILE *, u_long, u_long *), u_long value)
 352 {
 353         bool invalid;
 354         u_long rem;
 355
 356         if (value == 0) {
 357                 printf("0");
 358                 return;
 359         }
 360         printf("%#lx<", value);
 361         invalid = !decoder(stdout, value, &rem);
 362         printf(">");
 363         if (invalid)
 364                 printf("<invalid>%lu", rem);
 365 }
 366
 367 int
 368 main(int argc, char *argv[])
 369 {
 370         int ch, ktrlen, size;
 371         void *m;
 372         int trpoints = ALL_POINTS;
 373         int drop_logged;
 374         pid_t pid = 0;
 375         u_int sv_flags;
 376
 377         setlocale(LC_CTYPE, "");
 378
 379         timestamp = TIMESTAMP_NONE;
 380
 381         while ((ch = getopt(argc,argv,"f:dElm:np:AHRrSsTt:")) != -1)
 382                 switch (ch) {
 383                 case 'A':
 384                         abiflag = 1;
 385                         break;
 386                 case 'f':
 387                         tracefile = optarg;
 388                         break;
 389                 case 'd':
 390                         decimal = 1;
 391                         break;
 392                 case 'l':
 393                         tail = 1;
 394                         break;
 395                 case 'm':
 396                         maxdata = atoi(optarg);
 397                         break;
 398                 case 'n':
 399                         fancy = 0;
 400                         break;
 401                 case 'p':
 402                         pid = atoi(optarg);
 403                         break;
 404                 case 'r':
 405                         resolv = 1;
 406                         break;
 407                 case 'S':
 408                         syscallno = 1;
 409                         break;
 410                 case 's':
 411                         suppressdata = 1;
 412                         break;
 413                 case 'E':
 414                         timestamp |= TIMESTAMP_ELAPSED;
 415                         break;
 416                 case 'H':
 417                         threads = 1;
 418                         break;
 419                 case 'R':
 420                         timestamp |= TIMESTAMP_RELATIVE;
 421                         break;
 422                 case 'T':
 423                         timestamp |= TIMESTAMP_ABSOLUTE;
 424                         break;
 425                 case 't':
 426                         trpoints = getpoints(optarg);
 427                         if (trpoints < 0)
 428                                 errx(1, "unknown trace point in %s", optarg);
 429                         break;
 430                 default:
 431                         usage();
 432                 }
 433
 434         if (argc > optind)
 435                 usage();
 436
 437         m = malloc(size = 1025);
 438         if (m == NULL)
 439                 errx(1, "%s", strerror(ENOMEM));
 440         if (strcmp(tracefile, "-") != 0)
 441                 if (!freopen(tracefile, "r", stdin))
 442                         err(1, "%s", tracefile);
 443
 444         strerror_init();
 445         localtime_init();
 446 #ifdef HAVE_LIBCASPER
 447         if (resolv != 0) {
 448                 if (cappwdgrp_setup(&cappwd, &capgrp) < 0) {
 449                         cappwd = NULL;
 450                         capgrp = NULL;
 451                 }
 452         }
 453         if (resolv == 0 || (cappwd != NULL && capgrp != NULL)) {
 454                 if (cap_enter() < 0 && errno != ENOSYS)
 455                         err(1, "unable to enter capability mode");
 456         }
 457 #else
 458         if (resolv == 0) {
 459                 if (cap_enter() < 0 && errno != ENOSYS)
 460                         err(1, "unable to enter capability mode");
 461         }
 462 #endif
 463         if (caph_limit_stdio() == -1)
 464                 err(1, "unable to limit stdio");
 465
 466         TAILQ_INIT(&trace_procs);
 467         drop_logged = 0;
 468         while (fread_tail(&ktr_header, sizeof(struct ktr_header), 1)) {
 469                 if (ktr_header.ktr_type & KTR_DROP) {
 470                         ktr_header.ktr_type &= ~KTR_DROP;
 471                         if (!drop_logged && threads) {
 472                                 printf(
 473                                     "%6jd %6jd %-8.*s Events dropped.\n",
 474                                     (intmax_t)ktr_header.ktr_pid,
 475                                     ktr_header.ktr_tid > 0 ?
 476                                     (intmax_t)ktr_header.ktr_tid : 0,
 477                                     MAXCOMLEN, ktr_header.ktr_comm);
 478                                 drop_logged = 1;
 479                         } else if (!drop_logged) {
 480                                 printf("%6jd %-8.*s Events dropped.\n",
 481                                     (intmax_t)ktr_header.ktr_pid, MAXCOMLEN,
 482                                     ktr_header.ktr_comm);
 483                                 drop_logged = 1;
 484                         }
 485                 }
 486                 if (trpoints & (1<<ktr_header.ktr_type))
 487                         if (pid == 0 || ktr_header.ktr_pid == pid ||
 488                             ktr_header.ktr_tid == pid)
 489                                 dumpheader(&ktr_header);
 490                 if ((ktrlen = ktr_header.ktr_len) < 0)
 491                         errx(1, "bogus length 0x%x", ktrlen);
 492                 if (ktrlen > size) {
 493                         m = realloc(m, ktrlen+1);
 494                         if (m == NULL)
 495                                 errx(1, "%s", strerror(ENOMEM));
 496                         size = ktrlen;
 497                 }
 498                 if (ktrlen && fread_tail(m, ktrlen, 1) == 0)
 499                         errx(1, "data too short");
 500                 if (fetchprocinfo(&ktr_header, (u_int *)m) != 0)
 501                         continue;
 502                 sv_flags = abidump(&ktr_header);
 503                 if (pid && ktr_header.ktr_pid != pid &&
 504                     ktr_header.ktr_tid != pid)
 505                         continue;
 506                 if ((trpoints & (1<<ktr_header.ktr_type)) == 0)
 507                         continue;
 508                 drop_logged = 0;
 509                 switch (ktr_header.ktr_type) {
 510                 case KTR_SYSCALL:
 511                         ktrsyscall((struct ktr_syscall *)m, sv_flags);
 512                         break;
 513                 case KTR_SYSRET:
 514                         ktrsysret((struct ktr_sysret *)m, sv_flags);
 515                         break;
 516                 case KTR_NAMEI:
 517                 case KTR_SYSCTL:
 518                         ktrnamei(m, ktrlen);
 519                         break;
 520                 case KTR_GENIO:
 521                         ktrgenio((struct ktr_genio *)m, ktrlen);
 522                         break;
 523                 case KTR_PSIG:
 524                         ktrpsig((struct ktr_psig *)m);
 525                         break;
 526                 case KTR_CSW:
 527                         if (ktrlen == sizeof(struct ktr_csw_old))
 528                                 ktrcsw_old((struct ktr_csw_old *)m);
 529                         else
 530                                 ktrcsw((struct ktr_csw *)m);
 531                         break;
 532                 case KTR_USER:
 533                         ktruser(ktrlen, m);
 534                         break;
 535                 case KTR_STRUCT:
 536                         ktrstruct(m, ktrlen);
 537                         break;
 538                 case KTR_CAPFAIL:
 539                         ktrcapfail((struct ktr_cap_fail *)m);
 540                         break;
 541                 case KTR_FAULT:
 542                         ktrfault((struct ktr_fault *)m);
 543                         break;
 544                 case KTR_FAULTEND:
 545                         ktrfaultend((struct ktr_faultend *)m);
 546                         break;
 547                 default:
 548                         printf("\n");
 549                         break;
 550                 }
 551                 if (tail)
 552                         fflush(stdout);
 553         }
 554         return 0;
 555 }
 556
 557 int
 558 fread_tail(void *buf, int size, int num)
 559 {
 560         int i;
 561
 562         while ((i = fread(buf, size, num, stdin)) == 0 && tail) {
 563                 sleep(1);
 564                 clearerr(stdin);
 565         }
 566         return (i);
 567 }
 568
 569 int
 570 fetchprocinfo(struct ktr_header *kth, u_int *flags)
 571 {
 572         struct proc_info *pi;
 573
 574         switch (kth->ktr_type) {
 575         case KTR_PROCCTOR:
 576                 TAILQ_FOREACH(pi, &trace_procs, info) {
 577                         if (pi->pid == kth->ktr_pid) {
 578                                 TAILQ_REMOVE(&trace_procs, pi, info);
 579                                 break;
 580                         }
 581                 }
 582                 pi = malloc(sizeof(struct proc_info));
 583                 if (pi == NULL)
 584                         errx(1, "%s", strerror(ENOMEM));
 585                 pi->sv_flags = *flags;
 586                 pi->pid = kth->ktr_pid;
 587                 TAILQ_INSERT_TAIL(&trace_procs, pi, info);
 588                 return (1);
 589
 590         case KTR_PROCDTOR:
 591                 TAILQ_FOREACH(pi, &trace_procs, info) {
 592                         if (pi->pid == kth->ktr_pid) {
 593                                 TAILQ_REMOVE(&trace_procs, pi, info);
 594                                 free(pi);
 595                                 break;
 596                         }
 597                 }
 598                 return (1);
 599         }
 600
 601         return (0);
 602 }
 603
 604 u_int
 605 abidump(struct ktr_header *kth)
 606 {
 607         struct proc_info *pi;
 608         const char *abi;
 609         const char *arch;
 610         u_int flags = 0;
 611
 612         TAILQ_FOREACH(pi, &trace_procs, info) {
 613                 if (pi->pid == kth->ktr_pid) {
 614                         flags = pi->sv_flags;
 615                         break;
 616                 }
 617         }
 618
 619         if (abiflag == 0)
 620                 return (flags);
 621
 622         switch (flags & SV_ABI_MASK) {
 623         case SV_ABI_LINUX:
 624                 abi = "L";
 625                 break;
 626         case SV_ABI_FREEBSD:
 627                 abi = "F";
 628                 break;
 629         case SV_ABI_CLOUDABI:
 630                 abi = "C";
 631                 break;
 632         default:
 633                 abi = "U";
 634                 break;
 635         }
 636
 637         if (flags & SV_LP64)
 638                 arch = "64";
 639         else if (flags & SV_ILP32)
 640                 arch = "32";
 641         else
 642                 arch = "00";
 643
 644         printf("%s%s  ", abi, arch);
 645
 646         return (flags);
 647 }
 648
 649 void
 650 dumpheader(struct ktr_header *kth)
 651 {
 652         static char unknown[64];
 653         static struct timeval prevtime, prevtime_e;
 654         struct timeval temp;
 655         const char *type;
 656         const char *sign;
 657
 658         switch (kth->ktr_type) {
 659         case KTR_SYSCALL:
 660                 type = "CALL";
 661                 break;
 662         case KTR_SYSRET:
 663                 type = "RET ";
 664                 break;
 665         case KTR_NAMEI:
 666                 type = "NAMI";
 667                 break;
 668         case KTR_GENIO:
 669                 type = "GIO ";
 670                 break;
 671         case KTR_PSIG:
 672                 type = "PSIG";
 673                 break;
 674         case KTR_CSW:
 675                 type = "CSW ";
 676                 break;
 677         case KTR_USER:
 678                 type = "USER";
 679                 break;
 680         case KTR_STRUCT:
 681                 type = "STRU";
 682                 break;
 683         case KTR_SYSCTL:
 684                 type = "SCTL";
 685                 break;
 686         case KTR_PROCCTOR:
 687                 /* FALLTHROUGH */
 688         case KTR_PROCDTOR:
 689                 return;
 690         case KTR_CAPFAIL:
 691                 type = "CAP ";
 692                 break;
 693         case KTR_FAULT:
 694                 type = "PFLT";
 695                 break;
 696         case KTR_FAULTEND:
 697                 type = "PRET";
 698                 break;
 699         default:
 700                 sprintf(unknown, "UNKNOWN(%d)", kth->ktr_type);
 701                 type = unknown;
 702         }
 703
 704         /*
 705          * The ktr_tid field was previously the ktr_buffer field, which held
 706          * the kernel pointer value for the buffer associated with data
 707          * following the record header.  It now holds a threadid, but only
 708          * for trace files after the change.  Older trace files still contain
 709          * kernel pointers.  Detect this and suppress the results by printing
 710          * negative tid's as 0.
 711          */
 712         if (threads)
 713                 printf("%6jd %6jd %-8.*s ", (intmax_t)kth->ktr_pid,
 714                     kth->ktr_tid > 0 ? (intmax_t)kth->ktr_tid : 0,
 715                     MAXCOMLEN, kth->ktr_comm);
 716         else
 717                 printf("%6jd %-8.*s ", (intmax_t)kth->ktr_pid, MAXCOMLEN,
 718                     kth->ktr_comm);
 719         if (timestamp) {
 720                 if (timestamp & TIMESTAMP_ABSOLUTE) {
 721                         printf("%jd.%06ld ", (intmax_t)kth->ktr_time.tv_sec,
 722                             kth->ktr_time.tv_usec);
 723                 }
 724                 if (timestamp & TIMESTAMP_ELAPSED) {
 725                         if (prevtime_e.tv_sec == 0)
 726                                 prevtime_e = kth->ktr_time;
 727                         timersub(&kth->ktr_time, &prevtime_e, &temp);
 728                         printf("%jd.%06ld ", (intmax_t)temp.tv_sec,
 729                             temp.tv_usec);
 730                 }
 731                 if (timestamp & TIMESTAMP_RELATIVE) {
 732                         if (prevtime.tv_sec == 0)
 733                                 prevtime = kth->ktr_time;
 734                         if (timercmp(&kth->ktr_time, &prevtime, <)) {
 735                                 timersub(&prevtime, &kth->ktr_time, &temp);
 736                                 sign = "-";
 737                         } else {
 738                                 timersub(&kth->ktr_time, &prevtime, &temp);
 739                                 sign = "";
 740                         }
 741                         prevtime = kth->ktr_time;
 742                         printf("%s%jd.%06ld ", sign, (intmax_t)temp.tv_sec,
 743                             temp.tv_usec);
 744                 }
 745         }
 746         printf("%s  ", type);
 747 }
 748
 749 #include <sys/syscall.h>
 750
 751 static void
 752 ioctlname(unsigned long val)
 753 {
 754         const char *str;
 755
 756         str = sysdecode_ioctlname(val);
 757         if (str != NULL)
 758                 printf("%s", str);
 759         else if (decimal)
 760                 printf("%lu", val);
 761         else
 762                 printf("%#lx", val);
 763 }
 764
 765 static enum sysdecode_abi
 766 syscallabi(u_int sv_flags)
 767 {
 768
 769         if (sv_flags == 0)
 770                 return (SYSDECODE_ABI_FREEBSD);
 771         switch (sv_flags & SV_ABI_MASK) {
 772         case SV_ABI_FREEBSD:
 773                 return (SYSDECODE_ABI_FREEBSD);
 774 #if defined(__amd64__) || defined(__i386__)
 775         case SV_ABI_LINUX:
 776 #ifdef __amd64__
 777                 if (sv_flags & SV_ILP32)
 778                         return (SYSDECODE_ABI_LINUX32);
 779 #endif
 780                 return (SYSDECODE_ABI_LINUX);
 781 #endif
 782 #if defined(__aarch64__) || defined(__amd64__)
 783         case SV_ABI_CLOUDABI:
 784                 return (SYSDECODE_ABI_CLOUDABI64);
 785 #endif
 786         default:
 787                 return (SYSDECODE_ABI_UNKNOWN);
 788         }
 789 }
 790
 791 static void
 792 syscallname(u_int code, u_int sv_flags)
 793 {
 794         const char *name;
 795
 796         name = sysdecode_syscallname(syscallabi(sv_flags), code);
 797         if (name == NULL)
 798                 printf("[%d]", code);
 799         else {
 800                 printf("%s", name);
 801                 if (syscallno)
 802                         printf("[%d]", code);
 803         }
 804 }
 805
 806 static void
 807 print_signal(int signo)
 808 {
 809         const char *signame;
 810
 811         signame = sysdecode_signal(signo);
 812         if (signame != NULL)
 813                 printf("%s", signame);
 814         else
 815                 printf("SIG %d", signo);
 816 }
 817
 818 void
 819 ktrsyscall(struct ktr_syscall *ktr, u_int sv_flags)
 820 {
 821         int narg = ktr->ktr_narg;
 822         register_t *ip, *first;
 823         intmax_t arg;
 824         int quad_align, quad_slots;
 825
 826         syscallname(ktr->ktr_code, sv_flags);
 827         ip = first = &ktr->ktr_args[0];
 828         if (narg) {
 829                 char c = '(';
 830                 if (fancy &&
 831                     (sv_flags == 0 ||
 832                     (sv_flags & SV_ABI_MASK) == SV_ABI_FREEBSD)) {
 833                         quad_align = 0;
 834                         if (sv_flags & SV_ILP32) {
 835 #ifdef __powerpc__
 836                                 quad_align = 1;
 837 #endif
 838                                 quad_slots = 2;
 839                         } else
 840                                 quad_slots = 1;
 841                         switch (ktr->ktr_code) {
 842                         case SYS_bindat:
 843                         case SYS_chflagsat:
 844                         case SYS_connectat:
 845                         case SYS_faccessat:
 846                         case SYS_fchmodat:
 847                         case SYS_fchownat:
 848                         case SYS_fstatat:
 849                         case SYS_futimesat:
 850                         case SYS_linkat:
 851                         case SYS_mkdirat:
 852                         case SYS_mkfifoat:
 853                         case SYS_mknodat:
 854                         case SYS_openat:
 855                         case SYS_readlinkat:
 856                         case SYS_renameat:
 857                         case SYS_unlinkat:
 858                         case SYS_utimensat:
 859                                 putchar('(');
 860                                 print_integer_arg_valid(sysdecode_atfd, *ip);
 861                                 c = ',';
 862                                 ip++;
 863                                 narg--;
 864                                 break;
 865                         }
 866                         switch (ktr->ktr_code) {
 867                         case SYS_ioctl: {
 868                                 print_number(ip, narg, c);
 869                                 putchar(c);
 870                                 ioctlname(*ip);
 871                                 c = ',';
 872                                 ip++;
 873                                 narg--;
 874                                 break;
 875                         }
 876                         case SYS_ptrace:
 877                                 putchar('(');
 878                                 print_integer_arg(sysdecode_ptrace_request, *ip);
 879                                 c = ',';
 880                                 ip++;
 881                                 narg--;
 882                                 break;
 883                         case SYS_access:
 884                         case SYS_eaccess:
 885                         case SYS_faccessat:
 886                                 print_number(ip, narg, c);
 887                                 putchar(',');
 888                                 print_mask_arg(sysdecode_access_mode, *ip);
 889                                 ip++;
 890                                 narg--;
 891                                 break;
 892                         case SYS_open:
 893                         case SYS_openat:
 894                                 print_number(ip, narg, c);
 895                                 putchar(',');
 896                                 print_mask_arg(sysdecode_open_flags, ip[0]);
 897                                 if ((ip[0] & O_CREAT) == O_CREAT) {
 898                                         putchar(',');
 899                                         decode_filemode(ip[1]);
 900                                 }
 901                                 ip += 2;
 902                                 narg -= 2;
 903                                 break;
 904                         case SYS_wait4:
 905                                 print_number(ip, narg, c);
 906                                 print_number(ip, narg, c);
 907                                 putchar(',');
 908                                 print_mask_arg0(sysdecode_wait4_options, *ip);
 909                                 ip++;
 910                                 narg--;
 911                                 break;
 912                         case SYS_wait6:
 913                                 putchar('(');
 914                                 print_integer_arg(sysdecode_idtype, *ip);
 915                                 c = ',';
 916                                 ip++;
 917                                 narg--;
 918                                 print_number64(first, ip, narg, c);
 919                                 print_number(ip, narg, c);
 920                                 putchar(',');
 921                                 print_mask_arg(sysdecode_wait6_options, *ip);
 922                                 ip++;
 923                                 narg--;
 924                                 break;
 925                         case SYS_chmod:
 926                         case SYS_fchmod:
 927                         case SYS_lchmod:
 928                         case SYS_fchmodat:
 929                                 print_number(ip, narg, c);
 930                                 putchar(',');
 931                                 decode_filemode(*ip);
 932                                 ip++;
 933                                 narg--;
 934                                 break;
 935                         case SYS_mknodat:
 936                                 print_number(ip, narg, c);
 937                                 putchar(',');
 938                                 decode_filemode(*ip);
 939                                 ip++;
 940                                 narg--;
 941                                 break;
 942                         case SYS_getfsstat:
 943                                 print_number(ip, narg, c);
 944                                 print_number(ip, narg, c);
 945                                 putchar(',');
 946                                 print_integer_arg(sysdecode_getfsstat_mode, *ip);
 947                                 ip++;
 948                                 narg--;
 949                                 break;
 950                         case SYS_mount:
 951                                 print_number(ip, narg, c);
 952                                 print_number(ip, narg, c);
 953                                 putchar(',');
 954                                 print_mask_arg(sysdecode_mount_flags, *ip);
 955                                 ip++;
 956                                 narg--;
 957                                 break;
 958                         case SYS_unmount:
 959                                 print_number(ip, narg, c);
 960                                 putchar(',');
 961                                 print_mask_arg(sysdecode_mount_flags, *ip);
 962                                 ip++;
 963                                 narg--;
 964                                 break;
 965                         case SYS_recvmsg:
 966                         case SYS_sendmsg:
 967                                 print_number(ip, narg, c);
 968                                 print_number(ip, narg, c);
 969                                 putchar(',');
 970                                 print_mask_arg0(sysdecode_msg_flags, *ip);
 971                                 ip++;
 972                                 narg--;
 973                                 break;
 974                         case SYS_recvfrom:
 975                         case SYS_sendto:
 976                                 print_number(ip, narg, c);
 977                                 print_number(ip, narg, c);
 978                                 print_number(ip, narg, c);
 979                                 putchar(',');
 980                                 print_mask_arg0(sysdecode_msg_flags, *ip);
 981                                 ip++;
 982                                 narg--;
 983                                 break;
 984                         case SYS_chflags:
 985                         case SYS_chflagsat:
 986                         case SYS_fchflags:
 987                         case SYS_lchflags:
 988                                 print_number(ip, narg, c);
 989                                 putchar(',');
 990                                 decode_fileflags(*ip);
 991                                 ip++;
 992                                 narg--;
 993                                 break;
 994                         case SYS_kill:
 995                                 print_number(ip, narg, c);
 996                                 putchar(',');
 997                                 print_signal(*ip);
 998                                 ip++;
 999                                 narg--;
1000                                 break;
1001                         case SYS_reboot:
1002                                 putchar('(');
1003                                 print_mask_arg(sysdecode_reboot_howto, *ip);
1004                                 ip++;
1005                                 narg--;
1006                                 break;
1007                         case SYS_umask:
1008                                 putchar('(');
1009                                 decode_filemode(*ip);
1010                                 ip++;
1011                                 narg--;
1012                                 break;
1013                         case SYS_msync:
1014                                 print_number(ip, narg, c);
1015                                 print_number(ip, narg, c);
1016                                 putchar(',');
1017                                 print_mask_arg(sysdecode_msync_flags, *ip);
1018                                 ip++;
1019                                 narg--;
1020                                 break;
1021 #ifdef SYS_freebsd6_mmap
1022                         case SYS_freebsd6_mmap:
1023                                 print_number(ip, narg, c);
1024                                 print_number(ip, narg, c);
1025                                 putchar(',');
1026                                 print_mask_arg(sysdecode_mmap_prot, *ip);
1027                                 putchar(',');
1028                                 ip++;
1029                                 narg--;
1030                                 print_mask_arg(sysdecode_mmap_flags, *ip);
1031                                 ip++;
1032                                 narg--;
1033                                 break;
1034 #endif
1035                         case SYS_mmap:
1036                                 print_number(ip, narg, c);
1037                                 print_number(ip, narg, c);
1038                                 putchar(',');
1039                                 print_mask_arg(sysdecode_mmap_prot, *ip);
1040                                 putchar(',');
1041                                 ip++;
1042                                 narg--;
1043                                 print_mask_arg(sysdecode_mmap_flags, *ip);
1044                                 ip++;
1045                                 narg--;
1046                                 break;
1047                         case SYS_mprotect:
1048                                 print_number(ip, narg, c);
1049                                 print_number(ip, narg, c);
1050                                 putchar(',');
1051                                 print_mask_arg(sysdecode_mmap_prot, *ip);
1052                                 ip++;
1053                                 narg--;
1054                                 break;
1055                         case SYS_madvise:
1056                                 print_number(ip, narg, c);
1057                                 print_number(ip, narg, c);
1058                                 putchar(',');
1059                                 print_integer_arg(sysdecode_madvice, *ip);
1060                                 ip++;
1061                                 narg--;
1062                                 break;
1063                         case SYS_getpriority:
1064                         case SYS_setpriority:
1065                                 putchar('(');
1066                                 print_integer_arg(sysdecode_prio_which, *ip);
1067                                 c = ',';
1068                                 ip++;
1069                                 narg--;
1070                                 break;
1071                         case SYS_fcntl:
1072                                 print_number(ip, narg, c);
1073                                 putchar(',');
1074                                 print_integer_arg(sysdecode_fcntl_cmd, ip[0]);
1075                                 if (sysdecode_fcntl_arg_p(ip[0])) {
1076                                         putchar(',');
1077                                         if (ip[0] == F_SETFL)
1078                                                 print_mask_arg(
1079                                                     sysdecode_fcntl_fileflags,
1080                                                         ip[1]);
1081                                         else
1082                                                 sysdecode_fcntl_arg(stdout,
1083                                                     ip[0], ip[1],
1084                                                     decimal ? 10 : 16);
1085                                 }
1086                                 ip += 2;
1087                                 narg -= 2;
1088                                 break;
1089                         case SYS_socket: {
1090                                 int sockdomain;
1091                                 putchar('(');
1092                                 sockdomain = *ip;
1093                                 print_integer_arg(sysdecode_socketdomain,
1094                                     sockdomain);
1095                                 ip++;
1096                                 narg--;
1097                                 putchar(',');
1098                                 print_mask_arg(sysdecode_socket_type, *ip);
1099                                 ip++;
1100                                 narg--;
1101                                 if (sockdomain == PF_INET ||
1102                                     sockdomain == PF_INET6) {
1103                                         putchar(',');
1104                                         print_integer_arg(sysdecode_ipproto,
1105                                             *ip);
1106                                         ip++;
1107                                         narg--;
1108                                 }
1109                                 c = ',';
1110                                 break;
1111                         }
1112                         case SYS_setsockopt:
1113                         case SYS_getsockopt: {
1114                                 const char *str;
1115
1116                                 print_number(ip, narg, c);
1117                                 putchar(',');
1118                                 print_integer_arg_valid(sysdecode_sockopt_level,
1119                                     *ip);
1120                                 str = sysdecode_sockopt_name(ip[0], ip[1]);
1121                                 if (str != NULL) {
1122                                         printf(",%s", str);
1123                                         ip++;
1124                                         narg--;
1125                                 }
1126                                 ip++;
1127                                 narg--;
1128                                 break;
1129                         }
1130 #ifdef SYS_freebsd6_lseek
1131                         case SYS_freebsd6_lseek:
1132                                 print_number(ip, narg, c);
1133                                 /* Hidden 'pad' argument, not in lseek(2) */
1134                                 print_number(ip, narg, c);
1135                                 print_number64(first, ip, narg, c);
1136                                 putchar(',');
1137                                 print_integer_arg(sysdecode_whence, *ip);
1138                                 ip++;
1139                                 narg--;
1140                                 break;
1141 #endif
1142                         case SYS_lseek:
1143                                 print_number(ip, narg, c);
1144                                 print_number64(first, ip, narg, c);
1145                                 putchar(',');
1146                                 print_integer_arg(sysdecode_whence, *ip);
1147                                 ip++;
1148                                 narg--;
1149                                 break;
1150                         case SYS_flock:
1151                                 print_number(ip, narg, c);
1152                                 putchar(',');
1153                                 print_mask_arg(sysdecode_flock_operation, *ip);
1154                                 ip++;
1155                                 narg--;
1156                                 break;
1157                         case SYS_mkfifo:
1158                         case SYS_mkfifoat:
1159                         case SYS_mkdir:
1160                         case SYS_mkdirat:
1161                                 print_number(ip, narg, c);
1162                                 putchar(',');
1163                                 decode_filemode(*ip);
1164                                 ip++;
1165                                 narg--;
1166                                 break;
1167                         case SYS_shutdown:
1168                                 print_number(ip, narg, c);
1169                                 putchar(',');
1170                                 print_integer_arg(sysdecode_shutdown_how, *ip);
1171                                 ip++;
1172                                 narg--;
1173                                 break;
1174                         case SYS_socketpair:
1175                                 putchar('(');
1176                                 print_integer_arg(sysdecode_socketdomain, *ip);
1177                                 ip++;
1178                                 narg--;
1179                                 putchar(',');
1180                                 print_mask_arg(sysdecode_socket_type, *ip);
1181                                 ip++;
1182                                 narg--;
1183                                 c = ',';
1184                                 break;
1185                         case SYS_getrlimit:
1186                         case SYS_setrlimit:
1187                                 putchar('(');
1188                                 print_integer_arg(sysdecode_rlimit, *ip);
1189                                 ip++;
1190                                 narg--;
1191                                 c = ',';
1192                                 break;
1193                         case SYS_getrusage:
1194                                 putchar('(');
1195                                 print_integer_arg(sysdecode_getrusage_who, *ip);
1196                                 ip++;
1197                                 narg--;
1198                                 c = ',';
1199                                 break;
1200                         case SYS_quotactl:
1201                                 print_number(ip, narg, c);
1202                                 putchar(',');
1203                                 if (!sysdecode_quotactl_cmd(stdout, *ip)) {
1204                                         if (decimal)
1205                                                 printf("<invalid=%d>", (int)*ip);
1206                                         else
1207                                                 printf("<invalid=%#x>",
1208                                                     (int)*ip);
1209                                 }
1210                                 ip++;
1211                                 narg--;
1212                                 c = ',';
1213                                 break;
1214                         case SYS_nfssvc:
1215                                 putchar('(');
1216                                 print_integer_arg(sysdecode_nfssvc_flags, *ip);
1217                                 ip++;
1218                                 narg--;
1219                                 c = ',';
1220                                 break;
1221                         case SYS_rtprio:
1222                         case SYS_rtprio_thread:
1223                                 putchar('(');
1224                                 print_integer_arg(sysdecode_rtprio_function,
1225                                     *ip);
1226                                 ip++;
1227                                 narg--;
1228                                 c = ',';
1229                                 break;
1230                         case SYS___semctl:
1231                                 print_number(ip, narg, c);
1232                                 print_number(ip, narg, c);
1233                                 putchar(',');
1234                                 print_integer_arg(sysdecode_semctl_cmd, *ip);
1235                                 ip++;
1236                                 narg--;
1237                                 break;
1238                         case SYS_semget:
1239                                 print_number(ip, narg, c);
1240                                 print_number(ip, narg, c);
1241                                 putchar(',');
1242                                 print_mask_arg(sysdecode_semget_flags, *ip);
1243                                 ip++;
1244                                 narg--;
1245                                 break;
1246                         case SYS_msgctl:
1247                                 print_number(ip, narg, c);
1248                                 putchar(',');
1249                                 print_integer_arg(sysdecode_msgctl_cmd, *ip);
1250                                 ip++;
1251                                 narg--;
1252                                 break;
1253                         case SYS_shmat:
1254                                 print_number(ip, narg, c);
1255                                 print_number(ip, narg, c);
1256                                 putchar(',');
1257                                 print_mask_arg(sysdecode_shmat_flags, *ip);
1258                                 ip++;
1259                                 narg--;
1260                                 break;
1261                         case SYS_shmctl:
1262                                 print_number(ip, narg, c);
1263                                 putchar(',');
1264                                 print_integer_arg(sysdecode_shmctl_cmd, *ip);
1265                                 ip++;
1266                                 narg--;
1267                                 break;
1268                         case SYS_shm_open:
1269                                 print_number(ip, narg, c);
1270                                 putchar(',');
1271                                 print_mask_arg(sysdecode_open_flags, ip[0]);
1272                                 putchar(',');
1273                                 decode_filemode(ip[1]);
1274                                 ip += 2;
1275                                 narg -= 2;
1276                                 break;
1277                         case SYS_minherit:
1278                                 print_number(ip, narg, c);
1279                                 print_number(ip, narg, c);
1280                                 putchar(',');
1281                                 print_integer_arg(sysdecode_minherit_inherit,
1282                                     *ip);
1283                                 ip++;
1284                                 narg--;
1285                                 break;
1286                         case SYS_rfork:
1287                                 putchar('(');
1288                                 print_mask_arg(sysdecode_rfork_flags, *ip);
1289                                 ip++;
1290                                 narg--;
1291                                 c = ',';
1292                                 break;
1293                         case SYS_lio_listio:
1294                                 putchar('(');
1295                                 print_integer_arg(sysdecode_lio_listio_mode,
1296                                     *ip);
1297                                 ip++;
1298                                 narg--;
1299                                 c = ',';
1300                                 break;
1301                         case SYS_mlockall:
1302                                 putchar('(');
1303                                 print_mask_arg(sysdecode_mlockall_flags, *ip);
1304                                 ip++;
1305                                 narg--;
1306                                 break;
1307                         case SYS_sched_setscheduler:
1308                                 print_number(ip, narg, c);
1309                                 putchar(',');
1310                                 print_integer_arg(sysdecode_scheduler_policy,
1311                                     *ip);
1312                                 ip++;
1313                                 narg--;
1314                                 break;
1315                         case SYS_sched_get_priority_max:
1316                         case SYS_sched_get_priority_min:
1317                                 putchar('(');
1318                                 print_integer_arg(sysdecode_scheduler_policy,
1319                                     *ip);
1320                                 ip++;
1321                                 narg--;
1322                                 break;
1323                         case SYS_sendfile:
1324                                 print_number(ip, narg, c);
1325                                 print_number(ip, narg, c);
1326                                 print_number(ip, narg, c);
1327                                 print_number(ip, narg, c);
1328                                 print_number(ip, narg, c);
1329                                 print_number(ip, narg, c);
1330                                 putchar(',');
1331                                 print_mask_arg(sysdecode_sendfile_flags, *ip);
1332                                 ip++;
1333                                 narg--;
1334                                 break;
1335                         case SYS_kldsym:
1336                                 print_number(ip, narg, c);
1337                                 putchar(',');
1338                                 print_integer_arg(sysdecode_kldsym_cmd, *ip);
1339                                 ip++;
1340                                 narg--;
1341                                 break;
1342                         case SYS_sigprocmask:
1343                                 putchar('(');
1344                                 print_integer_arg(sysdecode_sigprocmask_how,
1345                                     *ip);
1346                                 ip++;
1347                                 narg--;
1348                                 c = ',';
1349                                 break;
1350                         case SYS___acl_get_file:
1351                         case SYS___acl_set_file:
1352                         case SYS___acl_get_fd:
1353                         case SYS___acl_set_fd:
1354                         case SYS___acl_delete_file:
1355                         case SYS___acl_delete_fd:
1356                         case SYS___acl_aclcheck_file:
1357                         case SYS___acl_aclcheck_fd:
1358                         case SYS___acl_get_link:
1359                         case SYS___acl_set_link:
1360                         case SYS___acl_delete_link:
1361                         case SYS___acl_aclcheck_link:
1362                                 print_number(ip, narg, c);
1363                                 putchar(',');
1364                                 print_integer_arg(sysdecode_acltype, *ip);
1365                                 ip++;
1366                                 narg--;
1367                                 break;
1368                         case SYS_sigaction:
1369                                 putchar('(');
1370                                 print_signal(*ip);
1371                                 ip++;
1372                                 narg--;
1373                                 c = ',';
1374                                 break;
1375                         case SYS_extattrctl:
1376                                 print_number(ip, narg, c);
1377                                 putchar(',');
1378                                 print_integer_arg(sysdecode_extattrnamespace,
1379                                     *ip);
1380                                 ip++;
1381                                 narg--;
1382                                 break;
1383                         case SYS_nmount:
1384                                 print_number(ip, narg, c);
1385                                 print_number(ip, narg, c);
1386                                 putchar(',');
1387                                 print_mask_arg(sysdecode_mount_flags, *ip);
1388                                 ip++;
1389                                 narg--;
1390                                 break;
1391                         case SYS_thr_create:
1392                                 print_number(ip, narg, c);
1393                                 print_number(ip, narg, c);
1394                                 putchar(',');
1395                                 print_mask_arg(sysdecode_thr_create_flags, *ip);
1396                                 ip++;
1397                                 narg--;
1398                                 break;
1399                         case SYS_thr_kill:
1400                                 print_number(ip, narg, c);
1401                                 putchar(',');
1402                                 print_signal(*ip);
1403                                 ip++;
1404                                 narg--;
1405                                 break;
1406                         case SYS_kldunloadf:
1407                                 print_number(ip, narg, c);
1408                                 putchar(',');
1409                                 print_integer_arg(sysdecode_kldunload_flags,
1410                                     *ip);
1411                                 ip++;
1412                                 narg--;
1413                                 break;
1414                         case SYS_linkat:
1415                         case SYS_renameat:
1416                         case SYS_symlinkat:
1417                                 print_number(ip, narg, c);
1418                                 putchar(',');
1419                                 print_integer_arg_valid(sysdecode_atfd, *ip);
1420                                 ip++;
1421                                 narg--;
1422                                 break;
1423                         case SYS_cap_fcntls_limit:
1424                                 print_number(ip, narg, c);
1425                                 putchar(',');
1426                                 arg = *ip;
1427                                 ip++;
1428                                 narg--;
1429                                 print_mask_arg32(sysdecode_cap_fcntlrights, arg);
1430                                 break;
1431                         case SYS_posix_fadvise:
1432                                 print_number(ip, narg, c);
1433                                 print_number(ip, narg, c);
1434                                 print_number(ip, narg, c);
1435                                 (void)putchar(',');
1436                                 print_integer_arg(sysdecode_fadvice, *ip);
1437                                 ip++;
1438                                 narg--;
1439                                 break;
1440                         case SYS_procctl:
1441                                 putchar('(');
1442                                 print_integer_arg(sysdecode_idtype, *ip);
1443                                 c = ',';
1444                                 ip++;
1445                                 narg--;
1446                                 print_number64(first, ip, narg, c);
1447                                 putchar(',');
1448                                 print_integer_arg(sysdecode_procctl_cmd, *ip);
1449                                 ip++;
1450                                 narg--;
1451                                 break;
1452                         case SYS__umtx_op:
1453                                 print_number(ip, narg, c);
1454                                 putchar(',');
1455                                 print_integer_arg(sysdecode_umtx_op, *ip);
1456                                 switch (*ip) {
1457                                 case UMTX_OP_CV_WAIT:
1458                                         ip++;
1459                                         narg--;
1460                                         putchar(',');
1461                                         print_mask_argul(
1462                                             sysdecode_umtx_cvwait_flags, *ip);
1463                                         break;
1464                                 case UMTX_OP_RW_RDLOCK:
1465                                         ip++;
1466                                         narg--;
1467                                         putchar(',');
1468                                         print_mask_argul(
1469                                             sysdecode_umtx_rwlock_flags, *ip);
1470                                         break;
1471                                 }
1472                                 ip++;
1473                                 narg--;
1474                                 break;
1475                         case SYS_ftruncate:
1476                         case SYS_truncate:
1477                                 print_number(ip, narg, c);
1478                                 print_number64(first, ip, narg, c);
1479                                 break;
1480                         }
1481                 }
1482                 while (narg > 0) {
1483                         print_number(ip, narg, c);
1484                 }
1485                 putchar(')');
1486         }
1487         putchar('\n');
1488 }
1489
1490 void
1491 ktrsysret(struct ktr_sysret *ktr, u_int sv_flags)
1492 {
1493         register_t ret = ktr->ktr_retval;
1494         int error = ktr->ktr_error;
1495
1496         syscallname(ktr->ktr_code, sv_flags);
1497         printf(" ");
1498
1499         if (error == 0) {
1500                 if (fancy) {
1501                         printf("%ld", (long)ret);
1502                         if (ret < 0 || ret > 9)
1503                                 printf("/%#lx", (unsigned long)ret);
1504                 } else {
1505                         if (decimal)
1506                                 printf("%ld", (long)ret);
1507                         else
1508                                 printf("%#lx", (unsigned long)ret);
1509                 }
1510         } else if (error == ERESTART)
1511                 printf("RESTART");
1512         else if (error == EJUSTRETURN)
1513                 printf("JUSTRETURN");
1514         else {
1515                 printf("-1 errno %d", sysdecode_freebsd_to_abi_errno(
1516                     syscallabi(sv_flags), error));
1517                 if (fancy)
1518                         printf(" %s", strerror(ktr->ktr_error));
1519         }
1520         putchar('\n');
1521 }
1522
1523 void
1524 ktrnamei(char *cp, int len)
1525 {
1526         printf("\"%.*s\"\n", len, cp);
1527 }
1528
1529 void
1530 hexdump(char *p, int len, int screenwidth)
1531 {
1532         int n, i;
1533         int width;
1534
1535         width = 0;
1536         do {
1537                 width += 2;
1538                 i = 13;                 /* base offset */
1539                 i += (width / 2) + 1;   /* spaces every second byte */
1540                 i += (width * 2);       /* width of bytes */
1541                 i += 3;                 /* "  |" */
1542                 i += width;             /* each byte */
1543                 i += 1;                 /* "|" */
1544         } while (i < screenwidth);
1545         width -= 2;
1546
1547         for (n = 0; n < len; n += width) {
1548                 for (i = n; i < n + width; i++) {
1549                         if ((i % width) == 0) { /* beginning of line */
1550                                 printf("       0x%04x", i);
1551                         }
1552                         if ((i % 2) == 0) {
1553                                 printf(" ");
1554                         }
1555                         if (i < len)
1556                                 printf("%02x", p[i] & 0xff);
1557                         else
1558                                 printf("  ");
1559                 }
1560                 printf("  |");
1561                 for (i = n; i < n + width; i++) {
1562                         if (i >= len)
1563                                 break;
1564                         if (p[i] >= ' ' && p[i] <= '~')
1565                                 printf("%c", p[i]);
1566                         else
1567                                 printf(".");
1568                 }
1569                 printf("|\n");
1570         }
1571         if ((i % width) != 0)
1572                 printf("\n");
1573 }
1574
1575 void
1576 visdump(char *dp, int datalen, int screenwidth)
1577 {
1578         int col = 0;
1579         char *cp;
1580         int width;
1581         char visbuf[5];
1582
1583         printf("       \"");
1584         col = 8;
1585         for (;datalen > 0; datalen--, dp++) {
1586                  vis(visbuf, *dp, VIS_CSTYLE, *(dp+1));
1587                 cp = visbuf;
1588                 /*
1589                  * Keep track of printables and
1590                  * space chars (like fold(1)).
1591                  */
1592                 if (col == 0) {
1593                         putchar('\t');
1594                         col = 8;
1595                 }
1596                 switch(*cp) {
1597                 case '\n':
1598                         col = 0;
1599                         putchar('\n');
1600                         continue;
1601                 case '\t':
1602                         width = 8 - (col&07);
1603                         break;
1604                 default:
1605                         width = strlen(cp);
1606                 }
1607                 if (col + width > (screenwidth-2)) {
1608                         printf("\\\n\t");
1609                         col = 8;
1610                 }
1611                 col += width;
1612                 do {
1613                         putchar(*cp++);
1614                 } while (*cp);
1615         }
1616         if (col == 0)
1617                 printf("       ");
1618         printf("\"\n");
1619 }
1620
1621 void
1622 ktrgenio(struct ktr_genio *ktr, int len)
1623 {
1624         int datalen = len - sizeof (struct ktr_genio);
1625         char *dp = (char *)ktr + sizeof (struct ktr_genio);
1626         static int screenwidth = 0;
1627         int i, binary;
1628
1629         printf("fd %d %s %d byte%s\n", ktr->ktr_fd,
1630                 ktr->ktr_rw == UIO_READ ? "read" : "wrote", datalen,
1631                 datalen == 1 ? "" : "s");
1632         if (suppressdata)
1633                 return;
1634         if (screenwidth == 0) {
1635                 struct winsize ws;
1636
1637                 if (fancy && ioctl(fileno(stderr), TIOCGWINSZ, &ws) != -1 &&
1638                     ws.ws_col > 8)
1639                         screenwidth = ws.ws_col;
1640                 else
1641                         screenwidth = 80;
1642         }
1643         if (maxdata && datalen > maxdata)
1644                 datalen = maxdata;
1645
1646         for (i = 0, binary = 0; i < datalen && binary == 0; i++)  {
1647                 if (dp[i] >= 32 && dp[i] < 127)
1648                         continue;
1649                 if (dp[i] == 10 || dp[i] == 13 || dp[i] == 0 || dp[i] == 9)
1650                         continue;
1651                 binary = 1;
1652         }
1653         if (binary)
1654                 hexdump(dp, datalen, screenwidth);
1655         else
1656                 visdump(dp, datalen, screenwidth);
1657 }
1658
1659 void
1660 ktrpsig(struct ktr_psig *psig)
1661 {
1662         const char *str;
1663
1664         print_signal(psig->signo);
1665         if (psig->action == SIG_DFL) {
1666                 printf(" SIG_DFL");
1667         } else {
1668                 printf(" caught handler=0x%lx mask=0x%x",
1669                     (u_long)psig->action, psig->mask.__bits[0]);
1670         }
1671         printf(" code=");
1672         str = sysdecode_sigcode(psig->signo, psig->code);
1673         if (str != NULL)
1674                 printf("%s", str);
1675         else
1676                 printf("<invalid=%#x>", psig->code);
1677         putchar('\n');
1678 }
1679
1680 void
1681 ktrcsw_old(struct ktr_csw_old *cs)
1682 {
1683         printf("%s %s\n", cs->out ? "stop" : "resume",
1684                 cs->user ? "user" : "kernel");
1685 }
1686
1687 void
1688 ktrcsw(struct ktr_csw *cs)
1689 {
1690         printf("%s %s \"%s\"\n", cs->out ? "stop" : "resume",
1691             cs->user ? "user" : "kernel", cs->wmesg);
1692 }
1693
1694 void
1695 ktruser(int len, void *p)
1696 {
1697         unsigned char *cp;
1698
1699         if (sysdecode_utrace(stdout, p, len)) {
1700                 printf("\n");
1701                 return;
1702         }
1703
1704         printf("%d ", len);
1705         cp = p;
1706         while (len--)
1707                 if (decimal)
1708                         printf(" %d", *cp++);
1709                 else
1710                         printf(" %02x", *cp++);
1711         printf("\n");
1712 }
1713
1714 void
1715 ktrcaprights(cap_rights_t *rightsp)
1716 {
1717
1718         printf("cap_rights_t ");
1719         sysdecode_cap_rights(stdout, rightsp);
1720         printf("\n");
1721 }
1722
1723 static void
1724 ktrtimeval(struct timeval *tv)
1725 {
1726
1727         printf("{%ld, %ld}", (long)tv->tv_sec, tv->tv_usec);
1728 }
1729
1730 void
1731 ktritimerval(struct itimerval *it)
1732 {
1733
1734         printf("itimerval { .interval = ");
1735         ktrtimeval(&it->it_interval);
1736         printf(", .value = ");
1737         ktrtimeval(&it->it_value);
1738         printf(" }\n");
1739 }
1740
1741 void
1742 ktrsockaddr(struct sockaddr *sa)
1743 {
1744 /*
1745  TODO: Support additional address families
1746         #include <netsmb/netbios.h>
1747         struct sockaddr_nb      *nb;
1748 */
1749         const char *str;
1750         char addr[64];
1751
1752         /*
1753          * note: ktrstruct() has already verified that sa points to a
1754          * buffer at least sizeof(struct sockaddr) bytes long and exactly
1755          * sa->sa_len bytes long.
1756          */
1757         printf("struct sockaddr { ");
1758         str = sysdecode_sockaddr_family(sa->sa_family);
1759         if (str != NULL)
1760                 printf("%s", str);
1761         else
1762                 printf("<invalid=%d>", sa->sa_family);
1763         printf(", ");
1764
1765 #define check_sockaddr_len(n)                                   \
1766         if (sa_##n.s##n##_len < sizeof(struct sockaddr_##n)) {  \
1767                 printf("invalid");                              \
1768                 break;                                          \
1769         }
1770
1771         switch(sa->sa_family) {
1772         case AF_INET: {
1773                 struct sockaddr_in sa_in;
1774
1775                 memset(&sa_in, 0, sizeof(sa_in));
1776                 memcpy(&sa_in, sa, sa->sa_len);
1777                 check_sockaddr_len(in);
1778                 inet_ntop(AF_INET, &sa_in.sin_addr, addr, sizeof addr);
1779                 printf("%s:%u", addr, ntohs(sa_in.sin_port));
1780                 break;
1781         }
1782         case AF_INET6: {
1783                 struct sockaddr_in6 sa_in6;
1784
1785                 memset(&sa_in6, 0, sizeof(sa_in6));
1786                 memcpy(&sa_in6, sa, sa->sa_len);
1787                 check_sockaddr_len(in6);
1788                 getnameinfo((struct sockaddr *)&sa_in6, sizeof(sa_in6),
1789                     addr, sizeof(addr), NULL, 0, NI_NUMERICHOST);
1790                 printf("[%s]:%u", addr, htons(sa_in6.sin6_port));
1791                 break;
1792         }
1793         case AF_UNIX: {
1794                 struct sockaddr_un sa_un;
1795
1796                 memset(&sa_un, 0, sizeof(sa_un));
1797                 memcpy(&sa_un, sa, sa->sa_len);
1798                 printf("%.*s", (int)sizeof(sa_un.sun_path), sa_un.sun_path);
1799                 break;
1800         }
1801         default:
1802                 printf("unknown address family");
1803         }
1804         printf(" }\n");
1805 }
1806
1807 void
1808 ktrstat(struct stat *statp)
1809 {
1810         char mode[12], timestr[PATH_MAX + 4];
1811         struct passwd *pwd;
1812         struct group  *grp;
1813         struct tm *tm;
1814
1815         /*
1816          * note: ktrstruct() has already verified that statp points to a
1817          * buffer exactly sizeof(struct stat) bytes long.
1818          */
1819         printf("struct stat {");
1820         printf("dev=%ju, ino=%ju, ",
1821                 (uintmax_t)statp->st_dev, (uintmax_t)statp->st_ino);
1822         if (resolv == 0)
1823                 printf("mode=0%jo, ", (uintmax_t)statp->st_mode);
1824         else {
1825                 strmode(statp->st_mode, mode);
1826                 printf("mode=%s, ", mode);
1827         }
1828         printf("nlink=%ju, ", (uintmax_t)statp->st_nlink);
1829         if (resolv == 0) {
1830                 pwd = NULL;
1831         } else {
1832 #ifdef HAVE_LIBCASPER
1833                 if (cappwd != NULL)
1834                         pwd = cap_getpwuid(cappwd, statp->st_uid);
1835                 else
1836 #endif
1837                         pwd = getpwuid(statp->st_uid);
1838         }
1839         if (pwd == NULL)
1840                 printf("uid=%ju, ", (uintmax_t)statp->st_uid);
1841         else
1842                 printf("uid=\"%s\", ", pwd->pw_name);
1843         if (resolv == 0) {
1844                 grp = NULL;
1845         } else {
1846 #ifdef HAVE_LIBCASPER
1847                 if (capgrp != NULL)
1848                         grp = cap_getgrgid(capgrp, statp->st_gid);
1849                 else
1850 #endif
1851                         grp = getgrgid(statp->st_gid);
1852         }
1853         if (grp == NULL)
1854                 printf("gid=%ju, ", (uintmax_t)statp->st_gid);
1855         else
1856                 printf("gid=\"%s\", ", grp->gr_name);
1857         printf("rdev=%ju, ", (uintmax_t)statp->st_rdev);
1858         printf("atime=");
1859         if (resolv == 0)
1860                 printf("%jd", (intmax_t)statp->st_atim.tv_sec);
1861         else {
1862                 tm = localtime(&statp->st_atim.tv_sec);
1863                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1864                 printf("\"%s\"", timestr);
1865         }
1866         if (statp->st_atim.tv_nsec != 0)
1867                 printf(".%09ld, ", statp->st_atim.tv_nsec);
1868         else
1869                 printf(", ");
1870         printf("mtime=");
1871         if (resolv == 0)
1872                 printf("%jd", (intmax_t)statp->st_mtim.tv_sec);
1873         else {
1874                 tm = localtime(&statp->st_mtim.tv_sec);
1875                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1876                 printf("\"%s\"", timestr);
1877         }
1878         if (statp->st_mtim.tv_nsec != 0)
1879                 printf(".%09ld, ", statp->st_mtim.tv_nsec);
1880         else
1881                 printf(", ");
1882         printf("ctime=");
1883         if (resolv == 0)
1884                 printf("%jd", (intmax_t)statp->st_ctim.tv_sec);
1885         else {
1886                 tm = localtime(&statp->st_ctim.tv_sec);
1887                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1888                 printf("\"%s\"", timestr);
1889         }
1890         if (statp->st_ctim.tv_nsec != 0)
1891                 printf(".%09ld, ", statp->st_ctim.tv_nsec);
1892         else
1893                 printf(", ");
1894         printf("birthtime=");
1895         if (resolv == 0)
1896                 printf("%jd", (intmax_t)statp->st_birthtim.tv_sec);
1897         else {
1898                 tm = localtime(&statp->st_birthtim.tv_sec);
1899                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1900                 printf("\"%s\"", timestr);
1901         }
1902         if (statp->st_birthtim.tv_nsec != 0)
1903                 printf(".%09ld, ", statp->st_birthtim.tv_nsec);
1904         else
1905                 printf(", ");
1906         printf("size=%jd, blksize=%ju, blocks=%jd, flags=0x%x",
1907                 (uintmax_t)statp->st_size, (uintmax_t)statp->st_blksize,
1908                 (intmax_t)statp->st_blocks, statp->st_flags);
1909         printf(" }\n");
1910 }
1911
1912 void
1913 ktrstruct(char *buf, size_t buflen)
1914 {
1915         char *name, *data;
1916         size_t namelen, datalen;
1917         int i;
1918         cap_rights_t rights;
1919         struct itimerval it;
1920         struct stat sb;
1921         struct sockaddr_storage ss;
1922
1923         for (name = buf, namelen = 0;
1924              namelen < buflen && name[namelen] != '\0';
1925              ++namelen)
1926                 /* nothing */;
1927         if (namelen == buflen)
1928                 goto invalid;
1929         if (name[namelen] != '\0')
1930                 goto invalid;
1931         data = buf + namelen + 1;
1932         datalen = buflen - namelen - 1;
1933         if (datalen == 0)
1934                 goto invalid;
1935         /* sanity check */
1936         for (i = 0; i < (int)namelen; ++i)
1937                 if (!isalpha(name[i]))
1938                         goto invalid;
1939         if (strcmp(name, "caprights") == 0) {
1940                 if (datalen != sizeof(cap_rights_t))
1941                         goto invalid;
1942                 memcpy(&rights, data, datalen);
1943                 ktrcaprights(&rights);
1944         } else if (strcmp(name, "itimerval") == 0) {
1945                 if (datalen != sizeof(struct itimerval))
1946                         goto invalid;
1947                 memcpy(&it, data, datalen);
1948                 ktritimerval(&it);
1949         } else if (strcmp(name, "stat") == 0) {
1950                 if (datalen != sizeof(struct stat))
1951                         goto invalid;
1952                 memcpy(&sb, data, datalen);
1953                 ktrstat(&sb);
1954         } else if (strcmp(name, "sockaddr") == 0) {
1955                 if (datalen > sizeof(ss))
1956                         goto invalid;
1957                 memcpy(&ss, data, datalen);
1958                 if (datalen != ss.ss_len)
1959                         goto invalid;
1960                 ktrsockaddr((struct sockaddr *)&ss);
1961         } else {
1962                 printf("unknown structure\n");
1963         }
1964         return;
1965 invalid:
1966         printf("invalid record\n");
1967 }
1968
1969 void
1970 ktrcapfail(struct ktr_cap_fail *ktr)
1971 {
1972         switch (ktr->cap_type) {
1973         case CAPFAIL_NOTCAPABLE:
1974                 /* operation on fd with insufficient capabilities */
1975                 printf("operation requires ");
1976                 sysdecode_cap_rights(stdout, &ktr->cap_needed);
1977                 printf(", descriptor holds ");
1978                 sysdecode_cap_rights(stdout, &ktr->cap_held);
1979                 break;
1980         case CAPFAIL_INCREASE:
1981                 /* requested more capabilities than fd already has */
1982                 printf("attempt to increase capabilities from ");
1983                 sysdecode_cap_rights(stdout, &ktr->cap_held);
1984                 printf(" to ");
1985                 sysdecode_cap_rights(stdout, &ktr->cap_needed);
1986                 break;
1987         case CAPFAIL_SYSCALL:
1988                 /* called restricted syscall */
1989                 printf("disallowed system call");
1990                 break;
1991         case CAPFAIL_LOOKUP:
1992                 /* used ".." in strict-relative mode */
1993                 printf("restricted VFS lookup");
1994                 break;
1995         default:
1996                 printf("unknown capability failure: ");
1997                 sysdecode_cap_rights(stdout, &ktr->cap_needed);
1998                 printf(" ");
1999                 sysdecode_cap_rights(stdout, &ktr->cap_held);
2000                 break;
2001         }
2002         printf("\n");
2003 }
2004
2005 void
2006 ktrfault(struct ktr_fault *ktr)
2007 {
2008
2009         printf("0x%jx ", (uintmax_t)ktr->vaddr);
2010         print_mask_arg(sysdecode_vmprot, ktr->type);
2011         printf("\n");
2012 }
2013
2014 void
2015 ktrfaultend(struct ktr_faultend *ktr)
2016 {
2017         const char *str;
2018
2019         str = sysdecode_vmresult(ktr->result);
2020         if (str != NULL)
2021                 printf("%s", str);
2022         else
2023                 printf("<invalid=%d>", ktr->result);
2024         printf("\n");
2025 }
2026
2027 void
2028 usage(void)
2029 {
2030         fprintf(stderr, "usage: kdump [-dEnlHRrSsTA] [-f trfile] "
2031             "[-m maxdata] [-p pid] [-t trstr]\n");
2032         exit(1);
2033 }