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  * 4. 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_connectat:
 844                         case SYS_faccessat:
 845                         case SYS_fchmodat:
 846                         case SYS_fchownat:
 847                         case SYS_fstatat:
 848                         case SYS_futimesat:
 849                         case SYS_linkat:
 850                         case SYS_mkdirat:
 851                         case SYS_mkfifoat:
 852                         case SYS_mknodat:
 853                         case SYS_openat:
 854                         case SYS_readlinkat:
 855                         case SYS_renameat:
 856                         case SYS_unlinkat:
 857                         case SYS_utimensat:
 858                                 putchar('(');
 859                                 print_integer_arg_valid(sysdecode_atfd, *ip);
 860                                 c = ',';
 861                                 ip++;
 862                                 narg--;
 863                                 break;
 864                         }
 865                         switch (ktr->ktr_code) {
 866                         case SYS_ioctl: {
 867                                 print_number(ip, narg, c);
 868                                 putchar(c);
 869                                 ioctlname(*ip);
 870                                 c = ',';
 871                                 ip++;
 872                                 narg--;
 873                                 break;
 874                         }
 875                         case SYS_ptrace:
 876                                 putchar('(');
 877                                 print_integer_arg(sysdecode_ptrace_request, *ip);
 878                                 c = ',';
 879                                 ip++;
 880                                 narg--;
 881                                 break;
 882                         case SYS_access:
 883                         case SYS_eaccess:
 884                         case SYS_faccessat:
 885                                 print_number(ip, narg, c);
 886                                 putchar(',');
 887                                 print_mask_arg(sysdecode_access_mode, *ip);
 888                                 ip++;
 889                                 narg--;
 890                                 break;
 891                         case SYS_open:
 892                         case SYS_openat:
 893                                 print_number(ip, narg, c);
 894                                 putchar(',');
 895                                 print_mask_arg(sysdecode_open_flags, ip[0]);
 896                                 if ((ip[0] & O_CREAT) == O_CREAT) {
 897                                         putchar(',');
 898                                         decode_filemode(ip[1]);
 899                                 }
 900                                 ip += 2;
 901                                 narg -= 2;
 902                                 break;
 903                         case SYS_wait4:
 904                                 print_number(ip, narg, c);
 905                                 print_number(ip, narg, c);
 906                                 putchar(',');
 907                                 print_mask_arg0(sysdecode_wait4_options, *ip);
 908                                 ip++;
 909                                 narg--;
 910                                 break;
 911                         case SYS_wait6:
 912                                 putchar('(');
 913                                 print_integer_arg(sysdecode_idtype, *ip);
 914                                 c = ',';
 915                                 ip++;
 916                                 narg--;
 917                                 print_number64(first, ip, narg, c);
 918                                 print_number(ip, narg, c);
 919                                 putchar(',');
 920                                 print_mask_arg(sysdecode_wait6_options, *ip);
 921                                 ip++;
 922                                 narg--;
 923                                 break;
 924                         case SYS_chmod:
 925                         case SYS_fchmod:
 926                         case SYS_lchmod:
 927                         case SYS_fchmodat:
 928                                 print_number(ip, narg, c);
 929                                 putchar(',');
 930                                 decode_filemode(*ip);
 931                                 ip++;
 932                                 narg--;
 933                                 break;
 934                         case SYS_mknod:
 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_fchflags:
 986                         case SYS_lchflags:
 987                                 print_number(ip, narg, c);
 988                                 putchar(',');
 989                                 decode_fileflags(*ip);
 990                                 ip++;
 991                                 narg--;
 992                                 break;
 993                         case SYS_kill:
 994                                 print_number(ip, narg, c);
 995                                 putchar(',');
 996                                 print_signal(*ip);
 997                                 ip++;
 998                                 narg--;
 999                                 break;
1000                         case SYS_reboot:
1001                                 putchar('(');
1002                                 print_mask_arg(sysdecode_reboot_howto, *ip);
1003                                 ip++;
1004                                 narg--;
1005                                 break;
1006                         case SYS_umask:
1007                                 putchar('(');
1008                                 decode_filemode(*ip);
1009                                 ip++;
1010                                 narg--;
1011                                 break;
1012                         case SYS_msync:
1013                                 print_number(ip, narg, c);
1014                                 print_number(ip, narg, c);
1015                                 putchar(',');
1016                                 print_mask_arg(sysdecode_msync_flags, *ip);
1017                                 ip++;
1018                                 narg--;
1019                                 break;
1020 #ifdef SYS_freebsd6_mmap
1021                         case SYS_freebsd6_mmap:
1022                                 print_number(ip, narg, c);
1023                                 print_number(ip, narg, c);
1024                                 putchar(',');
1025                                 print_mask_arg(sysdecode_mmap_prot, *ip);
1026                                 putchar(',');
1027                                 ip++;
1028                                 narg--;
1029                                 print_mask_arg(sysdecode_mmap_flags, *ip);
1030                                 ip++;
1031                                 narg--;
1032                                 break;
1033 #endif
1034                         case SYS_mmap:
1035                                 print_number(ip, narg, c);
1036                                 print_number(ip, narg, c);
1037                                 putchar(',');
1038                                 print_mask_arg(sysdecode_mmap_prot, *ip);
1039                                 putchar(',');
1040                                 ip++;
1041                                 narg--;
1042                                 print_mask_arg(sysdecode_mmap_flags, *ip);
1043                                 ip++;
1044                                 narg--;
1045                                 break;
1046                         case SYS_mprotect:
1047                                 print_number(ip, narg, c);
1048                                 print_number(ip, narg, c);
1049                                 putchar(',');
1050                                 print_mask_arg(sysdecode_mmap_prot, *ip);
1051                                 ip++;
1052                                 narg--;
1053                                 break;
1054                         case SYS_madvise:
1055                                 print_number(ip, narg, c);
1056                                 print_number(ip, narg, c);
1057                                 putchar(',');
1058                                 print_integer_arg(sysdecode_madvice, *ip);
1059                                 ip++;
1060                                 narg--;
1061                                 break;
1062                         case SYS_setpriority:
1063                                 print_number(ip, narg, c);
1064                                 print_number(ip, narg, c);
1065                                 putchar(',');
1066                                 print_integer_arg(sysdecode_prio_which, *ip);
1067                                 ip++;
1068                                 narg--;
1069                                 break;
1070                         case SYS_fcntl:
1071                                 print_number(ip, narg, c);
1072                                 putchar(',');
1073                                 print_integer_arg(sysdecode_fcntl_cmd, ip[0]);
1074                                 if (sysdecode_fcntl_arg_p(ip[0])) {
1075                                         putchar(',');
1076                                         if (ip[0] == F_SETFL)
1077                                                 print_mask_arg(
1078                                                     sysdecode_fcntl_fileflags,
1079                                                         ip[1]);
1080                                         else
1081                                                 sysdecode_fcntl_arg(stdout,
1082                                                     ip[0], ip[1],
1083                                                     decimal ? 10 : 16);
1084                                 }
1085                                 ip += 2;
1086                                 narg -= 2;
1087                                 break;
1088                         case SYS_socket: {
1089                                 int sockdomain;
1090                                 putchar('(');
1091                                 sockdomain = *ip;
1092                                 print_integer_arg(sysdecode_socketdomain,
1093                                     sockdomain);
1094                                 ip++;
1095                                 narg--;
1096                                 putchar(',');
1097                                 print_mask_arg(sysdecode_socket_type, *ip);
1098                                 ip++;
1099                                 narg--;
1100                                 if (sockdomain == PF_INET ||
1101                                     sockdomain == PF_INET6) {
1102                                         putchar(',');
1103                                         print_integer_arg(sysdecode_ipproto,
1104                                             *ip);
1105                                         ip++;
1106                                         narg--;
1107                                 }
1108                                 c = ',';
1109                                 break;
1110                         }
1111                         case SYS_setsockopt:
1112                         case SYS_getsockopt: {
1113                                 const char *str;
1114
1115                                 print_number(ip, narg, c);
1116                                 putchar(',');
1117                                 print_integer_arg_valid(sysdecode_sockopt_level,
1118                                     *ip);
1119                                 str = sysdecode_sockopt_name(ip[0], ip[1]);
1120                                 if (str != NULL) {
1121                                         printf(",%s", str);
1122                                         ip++;
1123                                         narg--;
1124                                 }
1125                                 ip++;
1126                                 narg--;
1127                                 break;
1128                         }
1129 #ifdef SYS_freebsd6_lseek
1130                         case SYS_freebsd6_lseek:
1131                                 print_number(ip, narg, c);
1132                                 /* Hidden 'pad' argument, not in lseek(2) */
1133                                 print_number(ip, narg, c);
1134                                 print_number64(first, ip, narg, c);
1135                                 putchar(',');
1136                                 print_integer_arg(sysdecode_whence, *ip);
1137                                 ip++;
1138                                 narg--;
1139                                 break;
1140 #endif
1141                         case SYS_lseek:
1142                                 print_number(ip, narg, c);
1143                                 print_number64(first, ip, narg, c);
1144                                 putchar(',');
1145                                 print_integer_arg(sysdecode_whence, *ip);
1146                                 ip++;
1147                                 narg--;
1148                                 break;
1149                         case SYS_flock:
1150                                 print_number(ip, narg, c);
1151                                 putchar(',');
1152                                 print_mask_arg(sysdecode_flock_operation, *ip);
1153                                 ip++;
1154                                 narg--;
1155                                 break;
1156                         case SYS_mkfifo:
1157                         case SYS_mkfifoat:
1158                         case SYS_mkdir:
1159                         case SYS_mkdirat:
1160                                 print_number(ip, narg, c);
1161                                 putchar(',');
1162                                 decode_filemode(*ip);
1163                                 ip++;
1164                                 narg--;
1165                                 break;
1166                         case SYS_shutdown:
1167                                 print_number(ip, narg, c);
1168                                 putchar(',');
1169                                 print_integer_arg(sysdecode_shutdown_how, *ip);
1170                                 ip++;
1171                                 narg--;
1172                                 break;
1173                         case SYS_socketpair:
1174                                 putchar('(');
1175                                 print_integer_arg(sysdecode_socketdomain, *ip);
1176                                 ip++;
1177                                 narg--;
1178                                 putchar(',');
1179                                 print_mask_arg(sysdecode_socket_type, *ip);
1180                                 ip++;
1181                                 narg--;
1182                                 c = ',';
1183                                 break;
1184                         case SYS_getrlimit:
1185                         case SYS_setrlimit:
1186                                 putchar('(');
1187                                 print_integer_arg(sysdecode_rlimit, *ip);
1188                                 ip++;
1189                                 narg--;
1190                                 c = ',';
1191                                 break;
1192                         case SYS_quotactl:
1193                                 print_number(ip, narg, c);
1194                                 putchar(',');
1195                                 if (!sysdecode_quotactl_cmd(stdout, *ip)) {
1196                                         if (decimal)
1197                                                 printf("<invalid=%d>", (int)*ip);
1198                                         else
1199                                                 printf("<invalid=%#x>",
1200                                                     (int)*ip);
1201                                 }
1202                                 ip++;
1203                                 narg--;
1204                                 c = ',';
1205                                 break;
1206                         case SYS_nfssvc:
1207                                 putchar('(');
1208                                 print_integer_arg(sysdecode_nfssvc_flags, *ip);
1209                                 ip++;
1210                                 narg--;
1211                                 c = ',';
1212                                 break;
1213                         case SYS_rtprio:
1214                                 putchar('(');
1215                                 print_integer_arg(sysdecode_rtprio_function,
1216                                     *ip);
1217                                 ip++;
1218                                 narg--;
1219                                 c = ',';
1220                                 break;
1221                         case SYS___semctl:
1222                                 print_number(ip, narg, c);
1223                                 print_number(ip, narg, c);
1224                                 putchar(',');
1225                                 print_integer_arg(sysdecode_semctl_cmd, *ip);
1226                                 ip++;
1227                                 narg--;
1228                                 break;
1229                         case SYS_semget:
1230                                 print_number(ip, narg, c);
1231                                 print_number(ip, narg, c);
1232                                 putchar(',');
1233                                 print_mask_arg(sysdecode_semget_flags, *ip);
1234                                 ip++;
1235                                 narg--;
1236                                 break;
1237                         case SYS_msgctl:
1238                                 print_number(ip, narg, c);
1239                                 putchar(',');
1240                                 print_integer_arg(sysdecode_msgctl_cmd, *ip);
1241                                 ip++;
1242                                 narg--;
1243                                 break;
1244                         case SYS_shmat:
1245                                 print_number(ip, narg, c);
1246                                 print_number(ip, narg, c);
1247                                 putchar(',');
1248                                 print_mask_arg(sysdecode_shmat_flags, *ip);
1249                                 ip++;
1250                                 narg--;
1251                                 break;
1252                         case SYS_shmctl:
1253                                 print_number(ip, narg, c);
1254                                 putchar(',');
1255                                 print_integer_arg(sysdecode_shmctl_cmd, *ip);
1256                                 ip++;
1257                                 narg--;
1258                                 break;
1259                         case SYS_shm_open:
1260                                 print_number(ip, narg, c);
1261                                 putchar(',');
1262                                 print_mask_arg(sysdecode_open_flags, ip[0]);
1263                                 putchar(',');
1264                                 decode_filemode(ip[1]);
1265                                 ip += 2;
1266                                 narg -= 2;
1267                                 break;
1268                         case SYS_minherit:
1269                                 print_number(ip, narg, c);
1270                                 print_number(ip, narg, c);
1271                                 putchar(',');
1272                                 print_integer_arg(sysdecode_minherit_inherit,
1273                                     *ip);
1274                                 ip++;
1275                                 narg--;
1276                                 break;
1277                         case SYS_rfork:
1278                                 putchar('(');
1279                                 print_mask_arg(sysdecode_rfork_flags, *ip);
1280                                 ip++;
1281                                 narg--;
1282                                 c = ',';
1283                                 break;
1284                         case SYS_lio_listio:
1285                                 putchar('(');
1286                                 print_integer_arg(sysdecode_lio_listio_mode,
1287                                     *ip);
1288                                 ip++;
1289                                 narg--;
1290                                 c = ',';
1291                                 break;
1292                         case SYS_mlockall:
1293                                 putchar('(');
1294                                 print_mask_arg(sysdecode_mlockall_flags, *ip);
1295                                 ip++;
1296                                 narg--;
1297                                 break;
1298                         case SYS_sched_setscheduler:
1299                                 print_number(ip, narg, c);
1300                                 putchar(',');
1301                                 print_integer_arg(sysdecode_scheduler_policy,
1302                                     *ip);
1303                                 ip++;
1304                                 narg--;
1305                                 break;
1306                         case SYS_sched_get_priority_max:
1307                         case SYS_sched_get_priority_min:
1308                                 putchar('(');
1309                                 print_integer_arg(sysdecode_scheduler_policy,
1310                                     *ip);
1311                                 ip++;
1312                                 narg--;
1313                                 break;
1314                         case SYS_sendfile:
1315                                 print_number(ip, narg, c);
1316                                 print_number(ip, narg, c);
1317                                 print_number(ip, narg, c);
1318                                 print_number(ip, narg, c);
1319                                 print_number(ip, narg, c);
1320                                 print_number(ip, narg, c);
1321                                 putchar(',');
1322                                 print_mask_arg(sysdecode_sendfile_flags, *ip);
1323                                 ip++;
1324                                 narg--;
1325                                 break;
1326                         case SYS_kldsym:
1327                                 print_number(ip, narg, c);
1328                                 putchar(',');
1329                                 print_integer_arg(sysdecode_kldsym_cmd, *ip);
1330                                 ip++;
1331                                 narg--;
1332                                 break;
1333                         case SYS_sigprocmask:
1334                                 putchar('(');
1335                                 print_integer_arg(sysdecode_sigprocmask_how,
1336                                     *ip);
1337                                 ip++;
1338                                 narg--;
1339                                 c = ',';
1340                                 break;
1341                         case SYS___acl_get_file:
1342                         case SYS___acl_set_file:
1343                         case SYS___acl_get_fd:
1344                         case SYS___acl_set_fd:
1345                         case SYS___acl_delete_file:
1346                         case SYS___acl_delete_fd:
1347                         case SYS___acl_aclcheck_file:
1348                         case SYS___acl_aclcheck_fd:
1349                         case SYS___acl_get_link:
1350                         case SYS___acl_set_link:
1351                         case SYS___acl_delete_link:
1352                         case SYS___acl_aclcheck_link:
1353                                 print_number(ip, narg, c);
1354                                 putchar(',');
1355                                 print_integer_arg(sysdecode_acltype, *ip);
1356                                 ip++;
1357                                 narg--;
1358                                 break;
1359                         case SYS_sigaction:
1360                                 putchar('(');
1361                                 print_signal(*ip);
1362                                 ip++;
1363                                 narg--;
1364                                 c = ',';
1365                                 break;
1366                         case SYS_extattrctl:
1367                                 print_number(ip, narg, c);
1368                                 putchar(',');
1369                                 print_integer_arg(sysdecode_extattrnamespace,
1370                                     *ip);
1371                                 ip++;
1372                                 narg--;
1373                                 break;
1374                         case SYS_nmount:
1375                                 print_number(ip, narg, c);
1376                                 print_number(ip, narg, c);
1377                                 putchar(',');
1378                                 print_mask_arg(sysdecode_mount_flags, *ip);
1379                                 ip++;
1380                                 narg--;
1381                                 break;
1382                         case SYS_thr_create:
1383                                 print_number(ip, narg, c);
1384                                 print_number(ip, narg, c);
1385                                 putchar(',');
1386                                 print_mask_arg(sysdecode_thr_create_flags, *ip);
1387                                 ip++;
1388                                 narg--;
1389                                 break;
1390                         case SYS_thr_kill:
1391                                 print_number(ip, narg, c);
1392                                 putchar(',');
1393                                 print_signal(*ip);
1394                                 ip++;
1395                                 narg--;
1396                                 break;
1397                         case SYS_kldunloadf:
1398                                 print_number(ip, narg, c);
1399                                 putchar(',');
1400                                 print_integer_arg(sysdecode_kldunload_flags,
1401                                     *ip);
1402                                 ip++;
1403                                 narg--;
1404                                 break;
1405                         case SYS_linkat:
1406                         case SYS_renameat:
1407                         case SYS_symlinkat:
1408                                 print_number(ip, narg, c);
1409                                 putchar(',');
1410                                 print_integer_arg_valid(sysdecode_atfd, *ip);
1411                                 ip++;
1412                                 narg--;
1413                                 break;
1414                         case SYS_cap_fcntls_limit:
1415                                 print_number(ip, narg, c);
1416                                 putchar(',');
1417                                 arg = *ip;
1418                                 ip++;
1419                                 narg--;
1420                                 print_mask_arg32(sysdecode_cap_fcntlrights, arg);
1421                                 break;
1422                         case SYS_posix_fadvise:
1423                                 print_number(ip, narg, c);
1424                                 print_number(ip, narg, c);
1425                                 print_number(ip, narg, c);
1426                                 (void)putchar(',');
1427                                 print_integer_arg(sysdecode_fadvice, *ip);
1428                                 ip++;
1429                                 narg--;
1430                                 break;
1431                         case SYS_procctl:
1432                                 putchar('(');
1433                                 print_integer_arg(sysdecode_idtype, *ip);
1434                                 c = ',';
1435                                 ip++;
1436                                 narg--;
1437                                 print_number64(first, ip, narg, c);
1438                                 putchar(',');
1439                                 print_integer_arg(sysdecode_procctl_cmd, *ip);
1440                                 ip++;
1441                                 narg--;
1442                                 break;
1443                         case SYS__umtx_op:
1444                                 print_number(ip, narg, c);
1445                                 putchar(',');
1446                                 print_integer_arg(sysdecode_umtx_op, *ip);
1447                                 switch (*ip) {
1448                                 case UMTX_OP_CV_WAIT:
1449                                         ip++;
1450                                         narg--;
1451                                         putchar(',');
1452                                         print_mask_argul(
1453                                             sysdecode_umtx_cvwait_flags, *ip);
1454                                         break;
1455                                 case UMTX_OP_RW_RDLOCK:
1456                                         ip++;
1457                                         narg--;
1458                                         putchar(',');
1459                                         print_mask_argul(
1460                                             sysdecode_umtx_rwlock_flags, *ip);
1461                                         break;
1462                                 }
1463                                 ip++;
1464                                 narg--;
1465                                 break;
1466                         case SYS_ftruncate:
1467                         case SYS_truncate:
1468                                 print_number(ip, narg, c);
1469                                 print_number64(first, ip, narg, c);
1470                                 break;
1471                         }
1472                 }
1473                 while (narg > 0) {
1474                         print_number(ip, narg, c);
1475                 }
1476                 putchar(')');
1477         }
1478         putchar('\n');
1479 }
1480
1481 void
1482 ktrsysret(struct ktr_sysret *ktr, u_int sv_flags)
1483 {
1484         register_t ret = ktr->ktr_retval;
1485         int error = ktr->ktr_error;
1486
1487         syscallname(ktr->ktr_code, sv_flags);
1488         printf(" ");
1489
1490         if (error == 0) {
1491                 if (fancy) {
1492                         printf("%ld", (long)ret);
1493                         if (ret < 0 || ret > 9)
1494                                 printf("/%#lx", (unsigned long)ret);
1495                 } else {
1496                         if (decimal)
1497                                 printf("%ld", (long)ret);
1498                         else
1499                                 printf("%#lx", (unsigned long)ret);
1500                 }
1501         } else if (error == ERESTART)
1502                 printf("RESTART");
1503         else if (error == EJUSTRETURN)
1504                 printf("JUSTRETURN");
1505         else {
1506                 printf("-1 errno %d", sysdecode_freebsd_to_abi_errno(
1507                     syscallabi(sv_flags), error));
1508                 if (fancy)
1509                         printf(" %s", strerror(ktr->ktr_error));
1510         }
1511         putchar('\n');
1512 }
1513
1514 void
1515 ktrnamei(char *cp, int len)
1516 {
1517         printf("\"%.*s\"\n", len, cp);
1518 }
1519
1520 void
1521 hexdump(char *p, int len, int screenwidth)
1522 {
1523         int n, i;
1524         int width;
1525
1526         width = 0;
1527         do {
1528                 width += 2;
1529                 i = 13;                 /* base offset */
1530                 i += (width / 2) + 1;   /* spaces every second byte */
1531                 i += (width * 2);       /* width of bytes */
1532                 i += 3;                 /* "  |" */
1533                 i += width;             /* each byte */
1534                 i += 1;                 /* "|" */
1535         } while (i < screenwidth);
1536         width -= 2;
1537
1538         for (n = 0; n < len; n += width) {
1539                 for (i = n; i < n + width; i++) {
1540                         if ((i % width) == 0) { /* beginning of line */
1541                                 printf("       0x%04x", i);
1542                         }
1543                         if ((i % 2) == 0) {
1544                                 printf(" ");
1545                         }
1546                         if (i < len)
1547                                 printf("%02x", p[i] & 0xff);
1548                         else
1549                                 printf("  ");
1550                 }
1551                 printf("  |");
1552                 for (i = n; i < n + width; i++) {
1553                         if (i >= len)
1554                                 break;
1555                         if (p[i] >= ' ' && p[i] <= '~')
1556                                 printf("%c", p[i]);
1557                         else
1558                                 printf(".");
1559                 }
1560                 printf("|\n");
1561         }
1562         if ((i % width) != 0)
1563                 printf("\n");
1564 }
1565
1566 void
1567 visdump(char *dp, int datalen, int screenwidth)
1568 {
1569         int col = 0;
1570         char *cp;
1571         int width;
1572         char visbuf[5];
1573
1574         printf("       \"");
1575         col = 8;
1576         for (;datalen > 0; datalen--, dp++) {
1577                  vis(visbuf, *dp, VIS_CSTYLE, *(dp+1));
1578                 cp = visbuf;
1579                 /*
1580                  * Keep track of printables and
1581                  * space chars (like fold(1)).
1582                  */
1583                 if (col == 0) {
1584                         putchar('\t');
1585                         col = 8;
1586                 }
1587                 switch(*cp) {
1588                 case '\n':
1589                         col = 0;
1590                         putchar('\n');
1591                         continue;
1592                 case '\t':
1593                         width = 8 - (col&07);
1594                         break;
1595                 default:
1596                         width = strlen(cp);
1597                 }
1598                 if (col + width > (screenwidth-2)) {
1599                         printf("\\\n\t");
1600                         col = 8;
1601                 }
1602                 col += width;
1603                 do {
1604                         putchar(*cp++);
1605                 } while (*cp);
1606         }
1607         if (col == 0)
1608                 printf("       ");
1609         printf("\"\n");
1610 }
1611
1612 void
1613 ktrgenio(struct ktr_genio *ktr, int len)
1614 {
1615         int datalen = len - sizeof (struct ktr_genio);
1616         char *dp = (char *)ktr + sizeof (struct ktr_genio);
1617         static int screenwidth = 0;
1618         int i, binary;
1619
1620         printf("fd %d %s %d byte%s\n", ktr->ktr_fd,
1621                 ktr->ktr_rw == UIO_READ ? "read" : "wrote", datalen,
1622                 datalen == 1 ? "" : "s");
1623         if (suppressdata)
1624                 return;
1625         if (screenwidth == 0) {
1626                 struct winsize ws;
1627
1628                 if (fancy && ioctl(fileno(stderr), TIOCGWINSZ, &ws) != -1 &&
1629                     ws.ws_col > 8)
1630                         screenwidth = ws.ws_col;
1631                 else
1632                         screenwidth = 80;
1633         }
1634         if (maxdata && datalen > maxdata)
1635                 datalen = maxdata;
1636
1637         for (i = 0, binary = 0; i < datalen && binary == 0; i++)  {
1638                 if (dp[i] >= 32 && dp[i] < 127)
1639                         continue;
1640                 if (dp[i] == 10 || dp[i] == 13 || dp[i] == 0 || dp[i] == 9)
1641                         continue;
1642                 binary = 1;
1643         }
1644         if (binary)
1645                 hexdump(dp, datalen, screenwidth);
1646         else
1647                 visdump(dp, datalen, screenwidth);
1648 }
1649
1650 void
1651 ktrpsig(struct ktr_psig *psig)
1652 {
1653         const char *str;
1654
1655         print_signal(psig->signo);
1656         if (psig->action == SIG_DFL) {
1657                 printf(" SIG_DFL");
1658         } else {
1659                 printf(" caught handler=0x%lx mask=0x%x",
1660                     (u_long)psig->action, psig->mask.__bits[0]);
1661         }
1662         printf(" code=");
1663         str = sysdecode_sigcode(psig->signo, psig->code);
1664         if (str != NULL)
1665                 printf("%s", str);
1666         else
1667                 printf("<invalid=%#x>", psig->code);
1668         putchar('\n');
1669 }
1670
1671 void
1672 ktrcsw_old(struct ktr_csw_old *cs)
1673 {
1674         printf("%s %s\n", cs->out ? "stop" : "resume",
1675                 cs->user ? "user" : "kernel");
1676 }
1677
1678 void
1679 ktrcsw(struct ktr_csw *cs)
1680 {
1681         printf("%s %s \"%s\"\n", cs->out ? "stop" : "resume",
1682             cs->user ? "user" : "kernel", cs->wmesg);
1683 }
1684
1685 void
1686 ktruser(int len, void *p)
1687 {
1688         unsigned char *cp;
1689
1690         if (sysdecode_utrace(stdout, p, len)) {
1691                 printf("\n");
1692                 return;
1693         }
1694
1695         printf("%d ", len);
1696         cp = p;
1697         while (len--)
1698                 if (decimal)
1699                         printf(" %d", *cp++);
1700                 else
1701                         printf(" %02x", *cp++);
1702         printf("\n");
1703 }
1704
1705 void
1706 ktrcaprights(cap_rights_t *rightsp)
1707 {
1708
1709         printf("cap_rights_t ");
1710         sysdecode_cap_rights(stdout, rightsp);
1711         printf("\n");
1712 }
1713
1714 static void
1715 ktrtimeval(struct timeval *tv)
1716 {
1717
1718         printf("{%ld, %ld}", (long)tv->tv_sec, tv->tv_usec);
1719 }
1720
1721 void
1722 ktritimerval(struct itimerval *it)
1723 {
1724
1725         printf("itimerval { .interval = ");
1726         ktrtimeval(&it->it_interval);
1727         printf(", .value = ");
1728         ktrtimeval(&it->it_value);
1729         printf(" }\n");
1730 }
1731
1732 void
1733 ktrsockaddr(struct sockaddr *sa)
1734 {
1735 /*
1736  TODO: Support additional address families
1737         #include <netnatm/natm.h>
1738         struct sockaddr_natm    *natm;
1739         #include <netsmb/netbios.h>
1740         struct sockaddr_nb      *nb;
1741 */
1742         const char *str;
1743         char addr[64];
1744
1745         /*
1746          * note: ktrstruct() has already verified that sa points to a
1747          * buffer at least sizeof(struct sockaddr) bytes long and exactly
1748          * sa->sa_len bytes long.
1749          */
1750         printf("struct sockaddr { ");
1751         str = sysdecode_sockaddr_family(sa->sa_family);
1752         if (str != NULL)
1753                 printf("%s", str);
1754         else
1755                 printf("<invalid=%d>", sa->sa_family);
1756         printf(", ");
1757
1758 #define check_sockaddr_len(n)                                   \
1759         if (sa_##n.s##n##_len < sizeof(struct sockaddr_##n)) {  \
1760                 printf("invalid");                              \
1761                 break;                                          \
1762         }
1763
1764         switch(sa->sa_family) {
1765         case AF_INET: {
1766                 struct sockaddr_in sa_in;
1767
1768                 memset(&sa_in, 0, sizeof(sa_in));
1769                 memcpy(&sa_in, sa, sa->sa_len);
1770                 check_sockaddr_len(in);
1771                 inet_ntop(AF_INET, &sa_in.sin_addr, addr, sizeof addr);
1772                 printf("%s:%u", addr, ntohs(sa_in.sin_port));
1773                 break;
1774         }
1775         case AF_INET6: {
1776                 struct sockaddr_in6 sa_in6;
1777
1778                 memset(&sa_in6, 0, sizeof(sa_in6));
1779                 memcpy(&sa_in6, sa, sa->sa_len);
1780                 check_sockaddr_len(in6);
1781                 getnameinfo((struct sockaddr *)&sa_in6, sizeof(sa_in6),
1782                     addr, sizeof(addr), NULL, 0, NI_NUMERICHOST);
1783                 printf("[%s]:%u", addr, htons(sa_in6.sin6_port));
1784                 break;
1785         }
1786         case AF_UNIX: {
1787                 struct sockaddr_un sa_un;
1788
1789                 memset(&sa_un, 0, sizeof(sa_un));
1790                 memcpy(&sa_un, sa, sa->sa_len);
1791                 printf("%.*s", (int)sizeof(sa_un.sun_path), sa_un.sun_path);
1792                 break;
1793         }
1794         default:
1795                 printf("unknown address family");
1796         }
1797         printf(" }\n");
1798 }
1799
1800 void
1801 ktrstat(struct stat *statp)
1802 {
1803         char mode[12], timestr[PATH_MAX + 4];
1804         struct passwd *pwd;
1805         struct group  *grp;
1806         struct tm *tm;
1807
1808         /*
1809          * note: ktrstruct() has already verified that statp points to a
1810          * buffer exactly sizeof(struct stat) bytes long.
1811          */
1812         printf("struct stat {");
1813         printf("dev=%ju, ino=%ju, ",
1814                 (uintmax_t)statp->st_dev, (uintmax_t)statp->st_ino);
1815         if (resolv == 0)
1816                 printf("mode=0%jo, ", (uintmax_t)statp->st_mode);
1817         else {
1818                 strmode(statp->st_mode, mode);
1819                 printf("mode=%s, ", mode);
1820         }
1821         printf("nlink=%ju, ", (uintmax_t)statp->st_nlink);
1822         if (resolv == 0) {
1823                 pwd = NULL;
1824         } else {
1825 #ifdef HAVE_LIBCASPER
1826                 if (cappwd != NULL)
1827                         pwd = cap_getpwuid(cappwd, statp->st_uid);
1828                 else
1829 #endif
1830                         pwd = getpwuid(statp->st_uid);
1831         }
1832         if (pwd == NULL)
1833                 printf("uid=%ju, ", (uintmax_t)statp->st_uid);
1834         else
1835                 printf("uid=\"%s\", ", pwd->pw_name);
1836         if (resolv == 0) {
1837                 grp = NULL;
1838         } else {
1839 #ifdef HAVE_LIBCASPER
1840                 if (capgrp != NULL)
1841                         grp = cap_getgrgid(capgrp, statp->st_gid);
1842                 else
1843 #endif
1844                         grp = getgrgid(statp->st_gid);
1845         }
1846         if (grp == NULL)
1847                 printf("gid=%ju, ", (uintmax_t)statp->st_gid);
1848         else
1849                 printf("gid=\"%s\", ", grp->gr_name);
1850         printf("rdev=%ju, ", (uintmax_t)statp->st_rdev);
1851         printf("atime=");
1852         if (resolv == 0)
1853                 printf("%jd", (intmax_t)statp->st_atim.tv_sec);
1854         else {
1855                 tm = localtime(&statp->st_atim.tv_sec);
1856                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1857                 printf("\"%s\"", timestr);
1858         }
1859         if (statp->st_atim.tv_nsec != 0)
1860                 printf(".%09ld, ", statp->st_atim.tv_nsec);
1861         else
1862                 printf(", ");
1863         printf("mtime=");
1864         if (resolv == 0)
1865                 printf("%jd", (intmax_t)statp->st_mtim.tv_sec);
1866         else {
1867                 tm = localtime(&statp->st_mtim.tv_sec);
1868                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1869                 printf("\"%s\"", timestr);
1870         }
1871         if (statp->st_mtim.tv_nsec != 0)
1872                 printf(".%09ld, ", statp->st_mtim.tv_nsec);
1873         else
1874                 printf(", ");
1875         printf("ctime=");
1876         if (resolv == 0)
1877                 printf("%jd", (intmax_t)statp->st_ctim.tv_sec);
1878         else {
1879                 tm = localtime(&statp->st_ctim.tv_sec);
1880                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1881                 printf("\"%s\"", timestr);
1882         }
1883         if (statp->st_ctim.tv_nsec != 0)
1884                 printf(".%09ld, ", statp->st_ctim.tv_nsec);
1885         else
1886                 printf(", ");
1887         printf("birthtime=");
1888         if (resolv == 0)
1889                 printf("%jd", (intmax_t)statp->st_birthtim.tv_sec);
1890         else {
1891                 tm = localtime(&statp->st_birthtim.tv_sec);
1892                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1893                 printf("\"%s\"", timestr);
1894         }
1895         if (statp->st_birthtim.tv_nsec != 0)
1896                 printf(".%09ld, ", statp->st_birthtim.tv_nsec);
1897         else
1898                 printf(", ");
1899         printf("size=%jd, blksize=%ju, blocks=%jd, flags=0x%x",
1900                 (uintmax_t)statp->st_size, (uintmax_t)statp->st_blksize,
1901                 (intmax_t)statp->st_blocks, statp->st_flags);
1902         printf(" }\n");
1903 }
1904
1905 void
1906 ktrstruct(char *buf, size_t buflen)
1907 {
1908         char *name, *data;
1909         size_t namelen, datalen;
1910         int i;
1911         cap_rights_t rights;
1912         struct itimerval it;
1913         struct stat sb;
1914         struct sockaddr_storage ss;
1915
1916         for (name = buf, namelen = 0;
1917              namelen < buflen && name[namelen] != '\0';
1918              ++namelen)
1919                 /* nothing */;
1920         if (namelen == buflen)
1921                 goto invalid;
1922         if (name[namelen] != '\0')
1923                 goto invalid;
1924         data = buf + namelen + 1;
1925         datalen = buflen - namelen - 1;
1926         if (datalen == 0)
1927                 goto invalid;
1928         /* sanity check */
1929         for (i = 0; i < (int)namelen; ++i)
1930                 if (!isalpha(name[i]))
1931                         goto invalid;
1932         if (strcmp(name, "caprights") == 0) {
1933                 if (datalen != sizeof(cap_rights_t))
1934                         goto invalid;
1935                 memcpy(&rights, data, datalen);
1936                 ktrcaprights(&rights);
1937         } else if (strcmp(name, "itimerval") == 0) {
1938                 if (datalen != sizeof(struct itimerval))
1939                         goto invalid;
1940                 memcpy(&it, data, datalen);
1941                 ktritimerval(&it);
1942         } else if (strcmp(name, "stat") == 0) {
1943                 if (datalen != sizeof(struct stat))
1944                         goto invalid;
1945                 memcpy(&sb, data, datalen);
1946                 ktrstat(&sb);
1947         } else if (strcmp(name, "sockaddr") == 0) {
1948                 if (datalen > sizeof(ss))
1949                         goto invalid;
1950                 memcpy(&ss, data, datalen);
1951                 if (datalen != ss.ss_len)
1952                         goto invalid;
1953                 ktrsockaddr((struct sockaddr *)&ss);
1954         } else {
1955                 printf("unknown structure\n");
1956         }
1957         return;
1958 invalid:
1959         printf("invalid record\n");
1960 }
1961
1962 void
1963 ktrcapfail(struct ktr_cap_fail *ktr)
1964 {
1965         switch (ktr->cap_type) {
1966         case CAPFAIL_NOTCAPABLE:
1967                 /* operation on fd with insufficient capabilities */
1968                 printf("operation requires ");
1969                 sysdecode_cap_rights(stdout, &ktr->cap_needed);
1970                 printf(", descriptor holds ");
1971                 sysdecode_cap_rights(stdout, &ktr->cap_held);
1972                 break;
1973         case CAPFAIL_INCREASE:
1974                 /* requested more capabilities than fd already has */
1975                 printf("attempt to increase capabilities from ");
1976                 sysdecode_cap_rights(stdout, &ktr->cap_held);
1977                 printf(" to ");
1978                 sysdecode_cap_rights(stdout, &ktr->cap_needed);
1979                 break;
1980         case CAPFAIL_SYSCALL:
1981                 /* called restricted syscall */
1982                 printf("disallowed system call");
1983                 break;
1984         case CAPFAIL_LOOKUP:
1985                 /* used ".." in strict-relative mode */
1986                 printf("restricted VFS lookup");
1987                 break;
1988         default:
1989                 printf("unknown capability failure: ");
1990                 sysdecode_cap_rights(stdout, &ktr->cap_needed);
1991                 printf(" ");
1992                 sysdecode_cap_rights(stdout, &ktr->cap_held);
1993                 break;
1994         }
1995         printf("\n");
1996 }
1997
1998 void
1999 ktrfault(struct ktr_fault *ktr)
2000 {
2001
2002         printf("0x%jx ", (uintmax_t)ktr->vaddr);
2003         print_mask_arg(sysdecode_vmprot, ktr->type);
2004         printf("\n");
2005 }
2006
2007 void
2008 ktrfaultend(struct ktr_faultend *ktr)
2009 {
2010         const char *str;
2011
2012         str = sysdecode_vmresult(ktr->result);
2013         if (str != NULL)
2014                 printf("%s", str);
2015         else
2016                 printf("<invalid=%d>", ktr->result);
2017         printf("\n");
2018 }
2019
2020 void
2021 usage(void)
2022 {
2023         fprintf(stderr, "usage: kdump [-dEnlHRrSsTA] [-f trfile] "
2024             "[-m maxdata] [-p pid] [-t trstr]\n");
2025         exit(1);
2026 }