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 _KERNEL
  45 extern int errno;
  46 #include <sys/errno.h>
  47 #undef _KERNEL
  48 #include <sys/param.h>
  49 #include <sys/capsicum.h>
  50 #include <sys/errno.h>
  51 #define _KERNEL
  52 #include <sys/time.h>
  53 #undef _KERNEL
  54 #include <sys/uio.h>
  55 #include <sys/ktrace.h>
  56 #include <sys/ioctl.h>
  57 #include <sys/socket.h>
  58 #include <sys/stat.h>
  59 #include <sys/sysent.h>
  60 #include <sys/umtx.h>
  61 #include <sys/un.h>
  62 #include <sys/queue.h>
  63 #include <sys/wait.h>
  64 #ifdef IPX
  65 #include <sys/types.h>
  66 #include <netipx/ipx.h>
  67 #endif
  68 #ifdef NETATALK
  69 #include <netatalk/at.h>
  70 #endif
  71 #include <arpa/inet.h>
  72 #include <netinet/in.h>
  73 #include <ctype.h>
  74 #include <dlfcn.h>
  75 #include <err.h>
  76 #include <grp.h>
  77 #include <inttypes.h>
  78 #include <locale.h>
  79 #include <netdb.h>
  80 #include <nl_types.h>
  81 #include <pwd.h>
  82 #include <stdio.h>
  83 #include <stdlib.h>
  84 #include <string.h>
  85 #include <termios.h>
  86 #include <time.h>
  87 #include <unistd.h>
  88 #include <vis.h>
  89 #include "ktrace.h"
  90 #include "kdump_subr.h"
  91
  92 u_int abidump(struct ktr_header *);
  93 int fetchprocinfo(struct ktr_header *, u_int *);
  94 int fread_tail(void *, int, int);
  95 void dumpheader(struct ktr_header *);
  96 void ktrsyscall(struct ktr_syscall *, u_int);
  97 void ktrsysret(struct ktr_sysret *, u_int);
  98 void ktrnamei(char *, int);
  99 void hexdump(char *, int, int);
 100 void visdump(char *, int, int);
 101 void ktrgenio(struct ktr_genio *, int);
 102 void ktrpsig(struct ktr_psig *);
 103 void ktrcsw(struct ktr_csw *);
 104 void ktrcsw_old(struct ktr_csw_old *);
 105 void ktruser_malloc(void *);
 106 void ktruser_rtld(int, void *);
 107 void ktruser(int, void *);
 108 void ktrcaprights(cap_rights_t *);
 109 void ktrsockaddr(struct sockaddr *);
 110 void ktrstat(struct stat *);
 111 void ktrstruct(char *, size_t);
 112 void ktrcapfail(struct ktr_cap_fail *);
 113 void ktrfault(struct ktr_fault *);
 114 void ktrfaultend(struct ktr_faultend *);
 115 void limitfd(int fd);
 116 void usage(void);
 117 void ioctlname(unsigned long, int);
 118
 119 extern const char *signames[], *syscallnames[];
 120 extern int nsyscalls;
 121
 122 static int timestamp, decimal, fancy = 1, suppressdata, tail, threads, maxdata,
 123     resolv = 0, abiflag = 0, syscallno = 0;
 124 static const char *tracefile = DEF_TRACEFILE;
 125 static struct ktr_header ktr_header;
 126
 127 #define TIME_FORMAT     "%b %e %T %Y"
 128 #define eqs(s1, s2)     (strcmp((s1), (s2)) == 0)
 129
 130 #define print_number(i,n,c) do {                                        \
 131         if (decimal)                                                    \
 132                 printf("%c%jd", c, (intmax_t)*i);                       \
 133         else                                                            \
 134                 printf("%c%#jx", c, (uintmax_t)(u_register_t)*i);       \
 135         i++;                                                            \
 136         n--;                                                            \
 137         c = ',';                                                        \
 138 } while (0)
 139
 140 #if defined(__amd64__) || defined(__i386__)
 141
 142 void linux_ktrsyscall(struct ktr_syscall *);
 143 void linux_ktrsysret(struct ktr_sysret *);
 144 extern const char *linux_syscallnames[];
 145
 146 #include <linux_syscalls.c>
 147 static int nlinux_syscalls = sizeof(linux_syscallnames) / \
 148                                 sizeof(linux_syscallnames[0]);
 149
 150 /*
 151  * from linux.h
 152  * Linux syscalls return negative errno's, we do positive and map them
 153  */
 154 static int bsd_to_linux_errno[ELAST + 1] = {
 155         -0,  -1,  -2,  -3,  -4,  -5,  -6,  -7,  -8,  -9,
 156         -10, -35, -12, -13, -14, -15, -16, -17, -18, -19,
 157         -20, -21, -22, -23, -24, -25, -26, -27, -28, -29,
 158         -30, -31, -32, -33, -34, -11,-115,-114, -88, -89,
 159         -90, -91, -92, -93, -94, -95, -96, -97, -98, -99,
 160         -100,-101,-102,-103,-104,-105,-106,-107,-108,-109,
 161         -110,-111, -40, -36,-112,-113, -39, -11, -87,-122,
 162         -116, -66,  -6,  -6,  -6,  -6,  -6, -37, -38,  -9,
 163         -6,  -6, -43, -42, -75,-125, -84, -95, -16, -74,
 164         -72, -67, -71
 165 };
 166 #endif
 167
 168 struct proc_info
 169 {
 170         TAILQ_ENTRY(proc_info)  info;
 171         u_int                   sv_flags;
 172         pid_t                   pid;
 173 };
 174
 175 static TAILQ_HEAD(trace_procs, proc_info) trace_procs;
 176
 177 static void
 178 strerror_init(void)
 179 {
 180
 181         /*
 182          * Cache NLS data before entering capability mode.
 183          * XXXPJD: There should be strerror_init() and strsignal_init() in libc.
 184          */
 185         (void)catopen("libc", NL_CAT_LOCALE);
 186 }
 187
 188 static void
 189 localtime_init(void)
 190 {
 191         time_t ltime;
 192
 193         /*
 194          * Allow localtime(3) to cache /etc/localtime content before entering
 195          * capability mode.
 196          * XXXPJD: There should be localtime_init() in libc.
 197          */
 198         (void)time(&ltime);
 199         (void)localtime(&ltime);
 200 }
 201
 202 int
 203 main(int argc, char *argv[])
 204 {
 205         int ch, ktrlen, size;
 206         void *m;
 207         int trpoints = ALL_POINTS;
 208         int drop_logged;
 209         pid_t pid = 0;
 210         u_int sv_flags;
 211
 212         setlocale(LC_CTYPE, "");
 213
 214         while ((ch = getopt(argc,argv,"f:dElm:np:AHRrSsTt:")) != -1)
 215                 switch (ch) {
 216                 case 'A':
 217                         abiflag = 1;
 218                         break;
 219                 case 'f':
 220                         tracefile = optarg;
 221                         break;
 222                 case 'd':
 223                         decimal = 1;
 224                         break;
 225                 case 'l':
 226                         tail = 1;
 227                         break;
 228                 case 'm':
 229                         maxdata = atoi(optarg);
 230                         break;
 231                 case 'n':
 232                         fancy = 0;
 233                         break;
 234                 case 'p':
 235                         pid = atoi(optarg);
 236                         break;
 237                 case 'r':
 238                         resolv = 1;
 239                         break;
 240                 case 'S':
 241                         syscallno = 1;
 242                         break;
 243                 case 's':
 244                         suppressdata = 1;
 245                         break;
 246                 case 'E':
 247                         timestamp = 3;  /* elapsed timestamp */
 248                         break;
 249                 case 'H':
 250                         threads = 1;
 251                         break;
 252                 case 'R':
 253                         timestamp = 2;  /* relative timestamp */
 254                         break;
 255                 case 'T':
 256                         timestamp = 1;
 257                         break;
 258                 case 't':
 259                         trpoints = getpoints(optarg);
 260                         if (trpoints < 0)
 261                                 errx(1, "unknown trace point in %s", optarg);
 262                         break;
 263                 default:
 264                         usage();
 265                 }
 266
 267         if (argc > optind)
 268                 usage();
 269
 270         m = malloc(size = 1025);
 271         if (m == NULL)
 272                 errx(1, "%s", strerror(ENOMEM));
 273         if (!freopen(tracefile, "r", stdin))
 274                 err(1, "%s", tracefile);
 275
 276         strerror_init();
 277         localtime_init();
 278
 279         if (resolv == 0) {
 280                 if (cap_enter() < 0 && errno != ENOSYS)
 281                         err(1, "unable to enter capability mode");
 282         }
 283         limitfd(STDIN_FILENO);
 284         limitfd(STDOUT_FILENO);
 285         limitfd(STDERR_FILENO);
 286
 287         TAILQ_INIT(&trace_procs);
 288         drop_logged = 0;
 289         while (fread_tail(&ktr_header, sizeof(struct ktr_header), 1)) {
 290                 if (ktr_header.ktr_type & KTR_DROP) {
 291                         ktr_header.ktr_type &= ~KTR_DROP;
 292                         if (!drop_logged && threads) {
 293                                 printf(
 294                                     "%6jd %6jd %-8.*s Events dropped.\n",
 295                                     (intmax_t)ktr_header.ktr_pid,
 296                                     ktr_header.ktr_tid > 0 ?
 297                                     (intmax_t)ktr_header.ktr_tid : 0,
 298                                     MAXCOMLEN, ktr_header.ktr_comm);
 299                                 drop_logged = 1;
 300                         } else if (!drop_logged) {
 301                                 printf("%6jd %-8.*s Events dropped.\n",
 302                                     (intmax_t)ktr_header.ktr_pid, MAXCOMLEN,
 303                                     ktr_header.ktr_comm);
 304                                 drop_logged = 1;
 305                         }
 306                 }
 307                 if (trpoints & (1<<ktr_header.ktr_type))
 308                         if (pid == 0 || ktr_header.ktr_pid == pid ||
 309                             ktr_header.ktr_tid == pid)
 310                                 dumpheader(&ktr_header);
 311                 if ((ktrlen = ktr_header.ktr_len) < 0)
 312                         errx(1, "bogus length 0x%x", ktrlen);
 313                 if (ktrlen > size) {
 314                         m = realloc(m, ktrlen+1);
 315                         if (m == NULL)
 316                                 errx(1, "%s", strerror(ENOMEM));
 317                         size = ktrlen;
 318                 }
 319                 if (ktrlen && fread_tail(m, ktrlen, 1) == 0)
 320                         errx(1, "data too short");
 321                 if (fetchprocinfo(&ktr_header, (u_int *)m) != 0)
 322                         continue;
 323                 sv_flags = abidump(&ktr_header);
 324                 if (pid && ktr_header.ktr_pid != pid &&
 325                     ktr_header.ktr_tid != pid)
 326                         continue;
 327                 if ((trpoints & (1<<ktr_header.ktr_type)) == 0)
 328                         continue;
 329                 drop_logged = 0;
 330                 switch (ktr_header.ktr_type) {
 331                 case KTR_SYSCALL:
 332 #if defined(__amd64__) || defined(__i386__)
 333                         if ((sv_flags & SV_ABI_MASK) == SV_ABI_LINUX)
 334                                 linux_ktrsyscall((struct ktr_syscall *)m);
 335                         else
 336 #endif
 337                                 ktrsyscall((struct ktr_syscall *)m, sv_flags);
 338                         break;
 339                 case KTR_SYSRET:
 340 #if defined(__amd64__) || defined(__i386__)
 341                         if ((sv_flags & SV_ABI_MASK) == SV_ABI_LINUX)
 342                                 linux_ktrsysret((struct ktr_sysret *)m);
 343                         else
 344 #endif
 345                                 ktrsysret((struct ktr_sysret *)m, sv_flags);
 346                         break;
 347                 case KTR_NAMEI:
 348                 case KTR_SYSCTL:
 349                         ktrnamei(m, ktrlen);
 350                         break;
 351                 case KTR_GENIO:
 352                         ktrgenio((struct ktr_genio *)m, ktrlen);
 353                         break;
 354                 case KTR_PSIG:
 355                         ktrpsig((struct ktr_psig *)m);
 356                         break;
 357                 case KTR_CSW:
 358                         if (ktrlen == sizeof(struct ktr_csw_old))
 359                                 ktrcsw_old((struct ktr_csw_old *)m);
 360                         else
 361                                 ktrcsw((struct ktr_csw *)m);
 362                         break;
 363                 case KTR_USER:
 364                         ktruser(ktrlen, m);
 365                         break;
 366                 case KTR_STRUCT:
 367                         ktrstruct(m, ktrlen);
 368                         break;
 369                 case KTR_CAPFAIL:
 370                         ktrcapfail((struct ktr_cap_fail *)m);
 371                         break;
 372                 case KTR_FAULT:
 373                         ktrfault((struct ktr_fault *)m);
 374                         break;
 375                 case KTR_FAULTEND:
 376                         ktrfaultend((struct ktr_faultend *)m);
 377                         break;
 378                 default:
 379                         printf("\n");
 380                         break;
 381                 }
 382                 if (tail)
 383                         fflush(stdout);
 384         }
 385         return 0;
 386 }
 387
 388 void
 389 limitfd(int fd)
 390 {
 391         cap_rights_t rights;
 392         unsigned long cmd;
 393
 394         cap_rights_init(&rights, CAP_FSTAT);
 395         cmd = 0;
 396
 397         switch (fd) {
 398         case STDIN_FILENO:
 399                 cap_rights_set(&rights, CAP_READ);
 400                 break;
 401         case STDOUT_FILENO:
 402                 cap_rights_set(&rights, CAP_IOCTL, CAP_WRITE);
 403                 cmd = TIOCGETA; /* required by isatty(3) in printf(3) */
 404                 break;
 405         case STDERR_FILENO:
 406                 cap_rights_set(&rights, CAP_WRITE);
 407                 if (!suppressdata) {
 408                         cap_rights_set(&rights, CAP_IOCTL);
 409                         cmd = TIOCGWINSZ;
 410                 }
 411                 break;
 412         default:
 413                 abort();
 414         }
 415
 416         if (cap_rights_limit(fd, &rights) < 0 && errno != ENOSYS)
 417                 err(1, "unable to limit rights for descriptor %d", fd);
 418         if (cmd != 0 && cap_ioctls_limit(fd, &cmd, 1) < 0 && errno != ENOSYS)
 419                 err(1, "unable to limit ioctls for descriptor %d", fd);
 420 }
 421
 422 int
 423 fread_tail(void *buf, int size, int num)
 424 {
 425         int i;
 426
 427         while ((i = fread(buf, size, num, stdin)) == 0 && tail) {
 428                 sleep(1);
 429                 clearerr(stdin);
 430         }
 431         return (i);
 432 }
 433
 434 int
 435 fetchprocinfo(struct ktr_header *kth, u_int *flags)
 436 {
 437         struct proc_info *pi;
 438
 439         switch (kth->ktr_type) {
 440         case KTR_PROCCTOR:
 441                 TAILQ_FOREACH(pi, &trace_procs, info) {
 442                         if (pi->pid == kth->ktr_pid) {
 443                                 TAILQ_REMOVE(&trace_procs, pi, info);
 444                                 break;
 445                         }
 446                 }
 447                 pi = malloc(sizeof(struct proc_info));
 448                 if (pi == NULL)
 449                         errx(1, "%s", strerror(ENOMEM));
 450                 pi->sv_flags = *flags;
 451                 pi->pid = kth->ktr_pid;
 452                 TAILQ_INSERT_TAIL(&trace_procs, pi, info);
 453                 return (1);
 454
 455         case KTR_PROCDTOR:
 456                 TAILQ_FOREACH(pi, &trace_procs, info) {
 457                         if (pi->pid == kth->ktr_pid) {
 458                                 TAILQ_REMOVE(&trace_procs, pi, info);
 459                                 free(pi);
 460                                 break;
 461                         }
 462                 }
 463                 return (1);
 464         }
 465
 466         return (0);
 467 }
 468
 469 u_int
 470 abidump(struct ktr_header *kth)
 471 {
 472         struct proc_info *pi;
 473         const char *abi;
 474         const char *arch;
 475         u_int flags = 0;
 476
 477         TAILQ_FOREACH(pi, &trace_procs, info) {
 478                 if (pi->pid == kth->ktr_pid) {
 479                         flags = pi->sv_flags;
 480                         break;
 481                 }
 482         }
 483
 484         if (abiflag == 0)
 485                 return (flags);
 486
 487         switch (flags & SV_ABI_MASK) {
 488         case SV_ABI_LINUX:
 489                 abi = "L";
 490                 break;
 491         case SV_ABI_FREEBSD:
 492                 abi = "F";
 493                 break;
 494         default:
 495                 abi = "U";
 496                 break;
 497         }
 498
 499         if (flags != 0) {
 500                 if (flags & SV_LP64)
 501                         arch = "64";
 502                 else
 503                         arch = "32";
 504         } else
 505                 arch = "00";
 506
 507         printf("%s%s  ", abi, arch);
 508
 509         return (flags);
 510 }
 511
 512 void
 513 dumpheader(struct ktr_header *kth)
 514 {
 515         static char unknown[64];
 516         static struct timeval prevtime, temp;
 517         const char *type;
 518
 519         switch (kth->ktr_type) {
 520         case KTR_SYSCALL:
 521                 type = "CALL";
 522                 break;
 523         case KTR_SYSRET:
 524                 type = "RET ";
 525                 break;
 526         case KTR_NAMEI:
 527                 type = "NAMI";
 528                 break;
 529         case KTR_GENIO:
 530                 type = "GIO ";
 531                 break;
 532         case KTR_PSIG:
 533                 type = "PSIG";
 534                 break;
 535         case KTR_CSW:
 536                 type = "CSW ";
 537                 break;
 538         case KTR_USER:
 539                 type = "USER";
 540                 break;
 541         case KTR_STRUCT:
 542                 type = "STRU";
 543                 break;
 544         case KTR_SYSCTL:
 545                 type = "SCTL";
 546                 break;
 547         case KTR_PROCCTOR:
 548                 /* FALLTHROUGH */
 549         case KTR_PROCDTOR:
 550                 return;
 551         case KTR_CAPFAIL:
 552                 type = "CAP ";
 553                 break;
 554         case KTR_FAULT:
 555                 type = "PFLT";
 556                 break;
 557         case KTR_FAULTEND:
 558                 type = "PRET";
 559                 break;
 560         default:
 561                 sprintf(unknown, "UNKNOWN(%d)", kth->ktr_type);
 562                 type = unknown;
 563         }
 564
 565         /*
 566          * The ktr_tid field was previously the ktr_buffer field, which held
 567          * the kernel pointer value for the buffer associated with data
 568          * following the record header.  It now holds a threadid, but only
 569          * for trace files after the change.  Older trace files still contain
 570          * kernel pointers.  Detect this and suppress the results by printing
 571          * negative tid's as 0.
 572          */
 573         if (threads)
 574                 printf("%6jd %6jd %-8.*s ", (intmax_t)kth->ktr_pid,
 575                     kth->ktr_tid > 0 ? (intmax_t)kth->ktr_tid : 0,
 576                     MAXCOMLEN, kth->ktr_comm);
 577         else
 578                 printf("%6jd %-8.*s ", (intmax_t)kth->ktr_pid, MAXCOMLEN,
 579                     kth->ktr_comm);
 580         if (timestamp) {
 581                 if (timestamp == 3) {
 582                         if (prevtime.tv_sec == 0)
 583                                 prevtime = kth->ktr_time;
 584                         timevalsub(&kth->ktr_time, &prevtime);
 585                 }
 586                 if (timestamp == 2) {
 587                         temp = kth->ktr_time;
 588                         timevalsub(&kth->ktr_time, &prevtime);
 589                         prevtime = temp;
 590                 }
 591                 printf("%jd.%06ld ", (intmax_t)kth->ktr_time.tv_sec,
 592                     kth->ktr_time.tv_usec);
 593         }
 594         printf("%s  ", type);
 595 }
 596
 597 #include <sys/syscall.h>
 598 #define KTRACE
 599 #include <sys/kern/syscalls.c>
 600 #undef KTRACE
 601 int nsyscalls = sizeof (syscallnames) / sizeof (syscallnames[0]);
 602
 603 void
 604 ktrsyscall(struct ktr_syscall *ktr, u_int flags)
 605 {
 606         int narg = ktr->ktr_narg;
 607         register_t *ip;
 608         intmax_t arg;
 609
 610         if ((flags != 0 && ((flags & SV_ABI_MASK) != SV_ABI_FREEBSD)) ||
 611             (ktr->ktr_code >= nsyscalls || ktr->ktr_code < 0))
 612                 printf("[%d]", ktr->ktr_code);
 613         else {
 614                 printf("%s", syscallnames[ktr->ktr_code]);
 615                 if (syscallno)
 616                         printf("[%d]", ktr->ktr_code);
 617         }
 618         ip = &ktr->ktr_args[0];
 619         if (narg) {
 620                 char c = '(';
 621                 if (fancy &&
 622                     (flags == 0 || (flags & SV_ABI_MASK) == SV_ABI_FREEBSD)) {
 623                         switch (ktr->ktr_code) {
 624                         case SYS_bindat:
 625                         case SYS_connectat:
 626                         case SYS_faccessat:
 627                         case SYS_fchmodat:
 628                         case SYS_fchownat:
 629                         case SYS_fstatat:
 630                         case SYS_futimesat:
 631                         case SYS_linkat:
 632                         case SYS_mkdirat:
 633                         case SYS_mkfifoat:
 634                         case SYS_mknodat:
 635                         case SYS_openat:
 636                         case SYS_readlinkat:
 637                         case SYS_renameat:
 638                         case SYS_unlinkat:
 639                                 putchar('(');
 640                                 atfdname(*ip, decimal);
 641                                 c = ',';
 642                                 ip++;
 643                                 narg--;
 644                                 break;
 645                         }
 646                         switch (ktr->ktr_code) {
 647                         case SYS_ioctl: {
 648                                 print_number(ip, narg, c);
 649                                 putchar(c);
 650                                 ioctlname(*ip, decimal);
 651                                 c = ',';
 652                                 ip++;
 653                                 narg--;
 654                                 break;
 655                         }
 656                         case SYS_ptrace:
 657                                 putchar('(');
 658                                 ptraceopname(*ip);
 659                                 c = ',';
 660                                 ip++;
 661                                 narg--;
 662                                 break;
 663                         case SYS_access:
 664                         case SYS_eaccess:
 665                         case SYS_faccessat:
 666                                 print_number(ip, narg, c);
 667                                 putchar(',');
 668                                 accessmodename(*ip);
 669                                 ip++;
 670                                 narg--;
 671                                 break;
 672                         case SYS_open:
 673                         case SYS_openat:
 674                                 print_number(ip, narg, c);
 675                                 putchar(',');
 676                                 flagsandmodename(ip[0], ip[1], decimal);
 677                                 ip += 2;
 678                                 narg -= 2;
 679                                 break;
 680                         case SYS_wait4:
 681                                 print_number(ip, narg, c);
 682                                 print_number(ip, narg, c);
 683                                 /*
 684                                  * A flags value of zero is valid for
 685                                  * wait4() but not for wait6(), so
 686                                  * handle zero special here.
 687                                  */
 688                                 if (*ip == 0) {
 689                                         print_number(ip, narg, c);
 690                                 } else {
 691                                         putchar(',');
 692                                         wait6optname(*ip);
 693                                         ip++;
 694                                         narg--;
 695                                 }
 696                                 break;
 697                         case SYS_wait6:
 698                                 putchar('(');
 699                                 idtypename(*ip, decimal);
 700                                 c = ',';
 701                                 ip++;
 702                                 narg--;
 703                                 print_number(ip, narg, c);
 704                                 print_number(ip, narg, c);
 705                                 putchar(',');
 706                                 wait6optname(*ip);
 707                                 ip++;
 708                                 narg--;
 709                                 break;
 710                         case SYS_chmod:
 711                         case SYS_fchmod:
 712                         case SYS_lchmod:
 713                                 print_number(ip, narg, c);
 714                                 putchar(',');
 715                                 modename(*ip);
 716                                 ip++;
 717                                 narg--;
 718                                 break;
 719                         case SYS_mknod:
 720                         case SYS_mknodat:
 721                                 print_number(ip, narg, c);
 722                                 putchar(',');
 723                                 modename(*ip);
 724                                 ip++;
 725                                 narg--;
 726                                 break;
 727                         case SYS_getfsstat:
 728                                 print_number(ip, narg, c);
 729                                 print_number(ip, narg, c);
 730                                 putchar(',');
 731                                 getfsstatflagsname(*ip);
 732                                 ip++;
 733                                 narg--;
 734                                 break;
 735                         case SYS_mount:
 736                                 print_number(ip, narg, c);
 737                                 print_number(ip, narg, c);
 738                                 putchar(',');
 739                                 mountflagsname(*ip);
 740                                 ip++;
 741                                 narg--;
 742                                 break;
 743                         case SYS_unmount:
 744                                 print_number(ip, narg, c);
 745                                 putchar(',');
 746                                 mountflagsname(*ip);
 747                                 ip++;
 748                                 narg--;
 749                                 break;
 750                         case SYS_recvmsg:
 751                         case SYS_sendmsg:
 752                                 print_number(ip, narg, c);
 753                                 print_number(ip, narg, c);
 754                                 putchar(',');
 755                                 sendrecvflagsname(*ip);
 756                                 ip++;
 757                                 narg--;
 758                                 break;
 759                         case SYS_recvfrom:
 760                         case SYS_sendto:
 761                                 print_number(ip, narg, c);
 762                                 print_number(ip, narg, c);
 763                                 print_number(ip, narg, c);
 764                                 putchar(',');
 765                                 sendrecvflagsname(*ip);
 766                                 ip++;
 767                                 narg--;
 768                                 break;
 769                         case SYS_chflags:
 770                         case SYS_fchflags:
 771                         case SYS_lchflags:
 772                                 print_number(ip, narg, c);
 773                                 putchar(',');
 774                                 modename(*ip);
 775                                 ip++;
 776                                 narg--;
 777                                 break;
 778                         case SYS_kill:
 779                                 print_number(ip, narg, c);
 780                                 putchar(',');
 781                                 signame(*ip);
 782                                 ip++;
 783                                 narg--;
 784                                 break;
 785                         case SYS_reboot:
 786                                 putchar('(');
 787                                 rebootoptname(*ip);
 788                                 ip++;
 789                                 narg--;
 790                                 break;
 791                         case SYS_umask:
 792                                 putchar('(');
 793                                 modename(*ip);
 794                                 ip++;
 795                                 narg--;
 796                                 break;
 797                         case SYS_msync:
 798                                 print_number(ip, narg, c);
 799                                 print_number(ip, narg, c);
 800                                 putchar(',');
 801                                 msyncflagsname(*ip);
 802                                 ip++;
 803                                 narg--;
 804                                 break;
 805 #ifdef SYS_freebsd6_mmap
 806                         case SYS_freebsd6_mmap:
 807                                 print_number(ip, narg, c);
 808                                 print_number(ip, narg, c);
 809                                 putchar(',');
 810                                 mmapprotname(*ip);
 811                                 putchar(',');
 812                                 ip++;
 813                                 narg--;
 814                                 mmapflagsname(*ip);
 815                                 ip++;
 816                                 narg--;
 817                                 break;
 818 #endif
 819                         case SYS_mmap:
 820                                 print_number(ip, narg, c);
 821                                 print_number(ip, narg, c);
 822                                 putchar(',');
 823                                 mmapprotname(*ip);
 824                                 putchar(',');
 825                                 ip++;
 826                                 narg--;
 827                                 mmapflagsname(*ip);
 828                                 ip++;
 829                                 narg--;
 830                                 break;
 831                         case SYS_mprotect:
 832                                 print_number(ip, narg, c);
 833                                 print_number(ip, narg, c);
 834                                 putchar(',');
 835                                 mmapprotname(*ip);
 836                                 ip++;
 837                                 narg--;
 838                                 break;
 839                         case SYS_madvise:
 840                                 print_number(ip, narg, c);
 841                                 print_number(ip, narg, c);
 842                                 putchar(',');
 843                                 madvisebehavname(*ip);
 844                                 ip++;
 845                                 narg--;
 846                                 break;
 847                         case SYS_setpriority:
 848                                 print_number(ip, narg, c);
 849                                 print_number(ip, narg, c);
 850                                 putchar(',');
 851                                 prioname(*ip);
 852                                 ip++;
 853                                 narg--;
 854                                 break;
 855                         case SYS_fcntl:
 856                                 print_number(ip, narg, c);
 857                                 putchar(',');
 858                                 fcntlcmdname(ip[0], ip[1], decimal);
 859                                 ip += 2;
 860                                 narg -= 2;
 861                                 break;
 862                         case SYS_socket: {
 863                                 int sockdomain;
 864                                 putchar('(');
 865                                 sockdomain = *ip;
 866                                 sockdomainname(sockdomain);
 867                                 ip++;
 868                                 narg--;
 869                                 putchar(',');
 870                                 socktypenamewithflags(*ip);
 871                                 ip++;
 872                                 narg--;
 873                                 if (sockdomain == PF_INET ||
 874                                     sockdomain == PF_INET6) {
 875                                         putchar(',');
 876                                         sockipprotoname(*ip);
 877                                         ip++;
 878                                         narg--;
 879                                 }
 880                                 c = ',';
 881                                 break;
 882                         }
 883                         case SYS_setsockopt:
 884                         case SYS_getsockopt:
 885                                 print_number(ip, narg, c);
 886                                 putchar(',');
 887                                 sockoptlevelname(*ip, decimal);
 888                                 if (*ip == SOL_SOCKET) {
 889                                         ip++;
 890                                         narg--;
 891                                         putchar(',');
 892                                         sockoptname(*ip);
 893                                 }
 894                                 ip++;
 895                                 narg--;
 896                                 break;
 897 #ifdef SYS_freebsd6_lseek
 898                         case SYS_freebsd6_lseek:
 899                                 print_number(ip, narg, c);
 900                                 /* Hidden 'pad' argument, not in lseek(2) */
 901                                 print_number(ip, narg, c);
 902                                 print_number(ip, narg, c);
 903                                 putchar(',');
 904                                 whencename(*ip);
 905                                 ip++;
 906                                 narg--;
 907                                 break;
 908 #endif
 909                         case SYS_lseek:
 910                                 print_number(ip, narg, c);
 911                                 /* Hidden 'pad' argument, not in lseek(2) */
 912                                 print_number(ip, narg, c);
 913                                 putchar(',');
 914                                 whencename(*ip);
 915                                 ip++;
 916                                 narg--;
 917                                 break;
 918                         case SYS_flock:
 919                                 print_number(ip, narg, c);
 920                                 putchar(',');
 921                                 flockname(*ip);
 922                                 ip++;
 923                                 narg--;
 924                                 break;
 925                         case SYS_mkfifo:
 926                         case SYS_mkfifoat:
 927                         case SYS_mkdir:
 928                         case SYS_mkdirat:
 929                                 print_number(ip, narg, c);
 930                                 putchar(',');
 931                                 modename(*ip);
 932                                 ip++;
 933                                 narg--;
 934                                 break;
 935                         case SYS_shutdown:
 936                                 print_number(ip, narg, c);
 937                                 putchar(',');
 938                                 shutdownhowname(*ip);
 939                                 ip++;
 940                                 narg--;
 941                                 break;
 942                         case SYS_socketpair:
 943                                 putchar('(');
 944                                 sockdomainname(*ip);
 945                                 ip++;
 946                                 narg--;
 947                                 putchar(',');
 948                                 socktypenamewithflags(*ip);
 949                                 ip++;
 950                                 narg--;
 951                                 c = ',';
 952                                 break;
 953                         case SYS_getrlimit:
 954                         case SYS_setrlimit:
 955                                 putchar('(');
 956                                 rlimitname(*ip);
 957                                 ip++;
 958                                 narg--;
 959                                 c = ',';
 960                                 break;
 961                         case SYS_quotactl:
 962                                 print_number(ip, narg, c);
 963                                 putchar(',');
 964                                 quotactlname(*ip);
 965                                 ip++;
 966                                 narg--;
 967                                 c = ',';
 968                                 break;
 969                         case SYS_nfssvc:
 970                                 putchar('(');
 971                                 nfssvcname(*ip);
 972                                 ip++;
 973                                 narg--;
 974                                 c = ',';
 975                                 break;
 976                         case SYS_rtprio:
 977                                 putchar('(');
 978                                 rtprioname(*ip);
 979                                 ip++;
 980                                 narg--;
 981                                 c = ',';
 982                                 break;
 983                         case SYS___semctl:
 984                                 print_number(ip, narg, c);
 985                                 print_number(ip, narg, c);
 986                                 putchar(',');
 987                                 semctlname(*ip);
 988                                 ip++;
 989                                 narg--;
 990                                 break;
 991                         case SYS_semget:
 992                                 print_number(ip, narg, c);
 993                                 print_number(ip, narg, c);
 994                                 putchar(',');
 995                                 semgetname(*ip);
 996                                 ip++;
 997                                 narg--;
 998                                 break;
 999                         case SYS_msgctl:
1000                                 print_number(ip, narg, c);
1001                                 putchar(',');
1002                                 shmctlname(*ip);
1003                                 ip++;
1004                                 narg--;
1005                                 break;
1006                         case SYS_shmat:
1007                                 print_number(ip, narg, c);
1008                                 print_number(ip, narg, c);
1009                                 putchar(',');
1010                                 shmatname(*ip);
1011                                 ip++;
1012                                 narg--;
1013                                 break;
1014                         case SYS_shmctl:
1015                                 print_number(ip, narg, c);
1016                                 putchar(',');
1017                                 shmctlname(*ip);
1018                                 ip++;
1019                                 narg--;
1020                                 break;
1021                         case SYS_shm_open:
1022                                 print_number(ip, narg, c);
1023                                 putchar(',');
1024                                 flagsname(ip[0]);
1025                                 printf(",0%o", (unsigned int)ip[1]);
1026                                 ip += 3;
1027                                 narg -= 3;
1028                                 break;
1029                         case SYS_minherit:
1030                                 print_number(ip, narg, c);
1031                                 print_number(ip, narg, c);
1032                                 putchar(',');
1033                                 minheritname(*ip);
1034                                 ip++;
1035                                 narg--;
1036                                 break;
1037                         case SYS_rfork:
1038                                 putchar('(');
1039                                 rforkname(*ip);
1040                                 ip++;
1041                                 narg--;
1042                                 c = ',';
1043                                 break;
1044                         case SYS_lio_listio:
1045                                 putchar('(');
1046                                 lio_listioname(*ip);
1047                                 ip++;
1048                                 narg--;
1049                                 c = ',';
1050                                 break;
1051                         case SYS_mlockall:
1052                                 putchar('(');
1053                                 mlockallname(*ip);
1054                                 ip++;
1055                                 narg--;
1056                                 break;
1057                         case SYS_sched_setscheduler:
1058                                 print_number(ip, narg, c);
1059                                 putchar(',');
1060                                 schedpolicyname(*ip);
1061                                 ip++;
1062                                 narg--;
1063                                 break;
1064                         case SYS_sched_get_priority_max:
1065                         case SYS_sched_get_priority_min:
1066                                 putchar('(');
1067                                 schedpolicyname(*ip);
1068                                 ip++;
1069                                 narg--;
1070                                 break;
1071                         case SYS_sendfile:
1072                                 print_number(ip, narg, c);
1073                                 print_number(ip, narg, c);
1074                                 print_number(ip, narg, c);
1075                                 print_number(ip, narg, c);
1076                                 print_number(ip, narg, c);
1077                                 print_number(ip, narg, c);
1078                                 putchar(',');
1079                                 sendfileflagsname(*(int *)ip);
1080                                 ip++;
1081                                 narg--;
1082                                 break;
1083                         case SYS_kldsym:
1084                                 print_number(ip, narg, c);
1085                                 putchar(',');
1086                                 kldsymcmdname(*ip);
1087                                 ip++;
1088                                 narg--;
1089                                 break;
1090                         case SYS_sigprocmask:
1091                                 putchar('(');
1092                                 sigprocmaskhowname(*ip);
1093                                 ip++;
1094                                 narg--;
1095                                 c = ',';
1096                                 break;
1097                         case SYS___acl_get_file:
1098                         case SYS___acl_set_file:
1099                         case SYS___acl_get_fd:
1100                         case SYS___acl_set_fd:
1101                         case SYS___acl_delete_file:
1102                         case SYS___acl_delete_fd:
1103                         case SYS___acl_aclcheck_file:
1104                         case SYS___acl_aclcheck_fd:
1105                         case SYS___acl_get_link:
1106                         case SYS___acl_set_link:
1107                         case SYS___acl_delete_link:
1108                         case SYS___acl_aclcheck_link:
1109                                 print_number(ip, narg, c);
1110                                 putchar(',');
1111                                 acltypename(*ip);
1112                                 ip++;
1113                                 narg--;
1114                                 break;
1115                         case SYS_sigaction:
1116                                 putchar('(');
1117                                 signame(*ip);
1118                                 ip++;
1119                                 narg--;
1120                                 c = ',';
1121                                 break;
1122                         case SYS_extattrctl:
1123                                 print_number(ip, narg, c);
1124                                 putchar(',');
1125                                 extattrctlname(*ip);
1126                                 ip++;
1127                                 narg--;
1128                                 break;
1129                         case SYS_nmount:
1130                                 print_number(ip, narg, c);
1131                                 print_number(ip, narg, c);
1132                                 putchar(',');
1133                                 mountflagsname(*ip);
1134                                 ip++;
1135                                 narg--;
1136                                 break;
1137                         case SYS_thr_create:
1138                                 print_number(ip, narg, c);
1139                                 print_number(ip, narg, c);
1140                                 putchar(',');
1141                                 thrcreateflagsname(*ip);
1142                                 ip++;
1143                                 narg--;
1144                                 break;
1145                         case SYS_thr_kill:
1146                                 print_number(ip, narg, c);
1147                                 putchar(',');
1148                                 signame(*ip);
1149                                 ip++;
1150                                 narg--;
1151                                 break;
1152                         case SYS_kldunloadf:
1153                                 print_number(ip, narg, c);
1154                                 putchar(',');
1155                                 kldunloadfflagsname(*ip);
1156                                 ip++;
1157                                 narg--;
1158                                 break;
1159                         case SYS_linkat:
1160                         case SYS_renameat:
1161                         case SYS_symlinkat:
1162                                 print_number(ip, narg, c);
1163                                 putchar(',');
1164                                 atfdname(*ip, decimal);
1165                                 ip++;
1166                                 narg--;
1167                                 break;
1168                         case SYS_cap_fcntls_limit:
1169                                 print_number(ip, narg, c);
1170                                 putchar(',');
1171                                 arg = *ip;
1172                                 ip++;
1173                                 narg--;
1174                                 capfcntlname(arg);
1175                                 break;
1176                         case SYS_posix_fadvise:
1177                                 print_number(ip, narg, c);
1178                                 print_number(ip, narg, c);
1179                                 print_number(ip, narg, c);
1180                                 (void)putchar(',');
1181                                 fadvisebehavname((int)*ip);
1182                                 ip++;
1183                                 narg--;
1184                                 break;
1185                         case SYS_procctl:
1186                                 putchar('(');
1187                                 idtypename(*ip, decimal);
1188                                 c = ',';
1189                                 ip++;
1190                                 narg--;
1191                                 print_number(ip, narg, c);
1192                                 putchar(',');
1193                                 procctlcmdname(*ip);
1194                                 ip++;
1195                                 narg--;
1196                                 break;
1197                         case SYS__umtx_op:
1198                                 print_number(ip, narg, c);
1199                                 putchar(',');
1200                                 umtxopname(*ip);
1201                                 switch (*ip) {
1202                                 case UMTX_OP_CV_WAIT:
1203                                         ip++;
1204                                         narg--;
1205                                         putchar(',');
1206                                         umtxcvwaitflags(*ip);
1207                                         break;
1208                                 case UMTX_OP_RW_RDLOCK:
1209                                         ip++;
1210                                         narg--;
1211                                         putchar(',');
1212                                         umtxrwlockflags(*ip);
1213                                         break;
1214                                 }
1215                                 ip++;
1216                                 narg--;
1217                         }
1218                 }
1219                 while (narg > 0) {
1220                         print_number(ip, narg, c);
1221                 }
1222                 putchar(')');
1223         }
1224         putchar('\n');
1225 }
1226
1227 void
1228 ktrsysret(struct ktr_sysret *ktr, u_int flags)
1229 {
1230         register_t ret = ktr->ktr_retval;
1231         int error = ktr->ktr_error;
1232         int code = ktr->ktr_code;
1233
1234         if ((flags != 0 && ((flags & SV_ABI_MASK) != SV_ABI_FREEBSD)) ||
1235             (code >= nsyscalls || code < 0))
1236                 printf("[%d] ", code);
1237         else {
1238                 printf("%s", syscallnames[code]);
1239                 if (syscallno)
1240                         printf("[%d]", code);
1241                 printf(" ");
1242         }
1243
1244         if (error == 0) {
1245                 if (fancy) {
1246                         printf("%ld", (long)ret);
1247                         if (ret < 0 || ret > 9)
1248                                 printf("/%#lx", (unsigned long)ret);
1249                 } else {
1250                         if (decimal)
1251                                 printf("%ld", (long)ret);
1252                         else
1253                                 printf("%#lx", (unsigned long)ret);
1254                 }
1255         } else if (error == ERESTART)
1256                 printf("RESTART");
1257         else if (error == EJUSTRETURN)
1258                 printf("JUSTRETURN");
1259         else {
1260                 printf("-1 errno %d", ktr->ktr_error);
1261                 if (fancy)
1262                         printf(" %s", strerror(ktr->ktr_error));
1263         }
1264         putchar('\n');
1265 }
1266
1267 void
1268 ktrnamei(char *cp, int len)
1269 {
1270         printf("\"%.*s\"\n", len, cp);
1271 }
1272
1273 void
1274 hexdump(char *p, int len, int screenwidth)
1275 {
1276         int n, i;
1277         int width;
1278
1279         width = 0;
1280         do {
1281                 width += 2;
1282                 i = 13;                 /* base offset */
1283                 i += (width / 2) + 1;   /* spaces every second byte */
1284                 i += (width * 2);       /* width of bytes */
1285                 i += 3;                 /* "  |" */
1286                 i += width;             /* each byte */
1287                 i += 1;                 /* "|" */
1288         } while (i < screenwidth);
1289         width -= 2;
1290
1291         for (n = 0; n < len; n += width) {
1292                 for (i = n; i < n + width; i++) {
1293                         if ((i % width) == 0) { /* beginning of line */
1294                                 printf("       0x%04x", i);
1295                         }
1296                         if ((i % 2) == 0) {
1297                                 printf(" ");
1298                         }
1299                         if (i < len)
1300                                 printf("%02x", p[i] & 0xff);
1301                         else
1302                                 printf("  ");
1303                 }
1304                 printf("  |");
1305                 for (i = n; i < n + width; i++) {
1306                         if (i >= len)
1307                                 break;
1308                         if (p[i] >= ' ' && p[i] <= '~')
1309                                 printf("%c", p[i]);
1310                         else
1311                                 printf(".");
1312                 }
1313                 printf("|\n");
1314         }
1315         if ((i % width) != 0)
1316                 printf("\n");
1317 }
1318
1319 void
1320 visdump(char *dp, int datalen, int screenwidth)
1321 {
1322         int col = 0;
1323         char *cp;
1324         int width;
1325         char visbuf[5];
1326
1327         printf("       \"");
1328         col = 8;
1329         for (;datalen > 0; datalen--, dp++) {
1330                  vis(visbuf, *dp, VIS_CSTYLE, *(dp+1));
1331                 cp = visbuf;
1332                 /*
1333                  * Keep track of printables and
1334                  * space chars (like fold(1)).
1335                  */
1336                 if (col == 0) {
1337                         putchar('\t');
1338                         col = 8;
1339                 }
1340                 switch(*cp) {
1341                 case '\n':
1342                         col = 0;
1343                         putchar('\n');
1344                         continue;
1345                 case '\t':
1346                         width = 8 - (col&07);
1347                         break;
1348                 default:
1349                         width = strlen(cp);
1350                 }
1351                 if (col + width > (screenwidth-2)) {
1352                         printf("\\\n\t");
1353                         col = 8;
1354                 }
1355                 col += width;
1356                 do {
1357                         putchar(*cp++);
1358                 } while (*cp);
1359         }
1360         if (col == 0)
1361                 printf("       ");
1362         printf("\"\n");
1363 }
1364
1365 void
1366 ktrgenio(struct ktr_genio *ktr, int len)
1367 {
1368         int datalen = len - sizeof (struct ktr_genio);
1369         char *dp = (char *)ktr + sizeof (struct ktr_genio);
1370         static int screenwidth = 0;
1371         int i, binary;
1372
1373         printf("fd %d %s %d byte%s\n", ktr->ktr_fd,
1374                 ktr->ktr_rw == UIO_READ ? "read" : "wrote", datalen,
1375                 datalen == 1 ? "" : "s");
1376         if (suppressdata)
1377                 return;
1378         if (screenwidth == 0) {
1379                 struct winsize ws;
1380
1381                 if (fancy && ioctl(fileno(stderr), TIOCGWINSZ, &ws) != -1 &&
1382                     ws.ws_col > 8)
1383                         screenwidth = ws.ws_col;
1384                 else
1385                         screenwidth = 80;
1386         }
1387         if (maxdata && datalen > maxdata)
1388                 datalen = maxdata;
1389
1390         for (i = 0, binary = 0; i < datalen && binary == 0; i++)  {
1391                 if (dp[i] >= 32 && dp[i] < 127)
1392                         continue;
1393                 if (dp[i] == 10 || dp[i] == 13 || dp[i] == 0 || dp[i] == 9)
1394                         continue;
1395                 binary = 1;
1396         }
1397         if (binary)
1398                 hexdump(dp, datalen, screenwidth);
1399         else
1400                 visdump(dp, datalen, screenwidth);
1401 }
1402
1403 const char *signames[] = {
1404         "NULL", "HUP", "INT", "QUIT", "ILL", "TRAP", "IOT",     /*  1 - 6  */
1405         "EMT", "FPE", "KILL", "BUS", "SEGV", "SYS",             /*  7 - 12 */
1406         "PIPE", "ALRM",  "TERM", "URG", "STOP", "TSTP",         /* 13 - 18 */
1407         "CONT", "CHLD", "TTIN", "TTOU", "IO", "XCPU",           /* 19 - 24 */
1408         "XFSZ", "VTALRM", "PROF", "WINCH", "29", "USR1",        /* 25 - 30 */
1409         "USR2", NULL,                                           /* 31 - 32 */
1410 };
1411
1412 void
1413 ktrpsig(struct ktr_psig *psig)
1414 {
1415         if (psig->signo > 0 && psig->signo < NSIG)
1416                 printf("SIG%s ", signames[psig->signo]);
1417         else
1418                 printf("SIG %d ", psig->signo);
1419         if (psig->action == SIG_DFL) {
1420                 printf("SIG_DFL code=");
1421                 sigcodename(psig->signo, psig->code);
1422                 putchar('\n');
1423         } else {
1424                 printf("caught handler=0x%lx mask=0x%x code=",
1425                     (u_long)psig->action, psig->mask.__bits[0]);
1426                 sigcodename(psig->signo, psig->code);
1427                 putchar('\n');
1428         }
1429 }
1430
1431 void
1432 ktrcsw_old(struct ktr_csw_old *cs)
1433 {
1434         printf("%s %s\n", cs->out ? "stop" : "resume",
1435                 cs->user ? "user" : "kernel");
1436 }
1437
1438 void
1439 ktrcsw(struct ktr_csw *cs)
1440 {
1441         printf("%s %s \"%s\"\n", cs->out ? "stop" : "resume",
1442             cs->user ? "user" : "kernel", cs->wmesg);
1443 }
1444
1445 #define UTRACE_DLOPEN_START             1
1446 #define UTRACE_DLOPEN_STOP              2
1447 #define UTRACE_DLCLOSE_START            3
1448 #define UTRACE_DLCLOSE_STOP             4
1449 #define UTRACE_LOAD_OBJECT              5
1450 #define UTRACE_UNLOAD_OBJECT            6
1451 #define UTRACE_ADD_RUNDEP               7
1452 #define UTRACE_PRELOAD_FINISHED         8
1453 #define UTRACE_INIT_CALL                9
1454 #define UTRACE_FINI_CALL                10
1455 #define UTRACE_DLSYM_START              11
1456 #define UTRACE_DLSYM_STOP               12
1457
1458 struct utrace_rtld {
1459         char sig[4];                            /* 'RTLD' */
1460         int event;
1461         void *handle;
1462         void *mapbase;
1463         size_t mapsize;
1464         int refcnt;
1465         char name[MAXPATHLEN];
1466 };
1467
1468 void
1469 ktruser_rtld(int len, void *p)
1470 {
1471         struct utrace_rtld *ut = p;
1472         unsigned char *cp;
1473         void *parent;
1474         int mode;
1475
1476         switch (ut->event) {
1477         case UTRACE_DLOPEN_START:
1478                 mode = ut->refcnt;
1479                 printf("dlopen(%s, ", ut->name);
1480                 switch (mode & RTLD_MODEMASK) {
1481                 case RTLD_NOW:
1482                         printf("RTLD_NOW");
1483                         break;
1484                 case RTLD_LAZY:
1485                         printf("RTLD_LAZY");
1486                         break;
1487                 default:
1488                         printf("%#x", mode & RTLD_MODEMASK);
1489                 }
1490                 if (mode & RTLD_GLOBAL)
1491                         printf(" | RTLD_GLOBAL");
1492                 if (mode & RTLD_TRACE)
1493                         printf(" | RTLD_TRACE");
1494                 if (mode & ~(RTLD_MODEMASK | RTLD_GLOBAL | RTLD_TRACE))
1495                         printf(" | %#x", mode &
1496                             ~(RTLD_MODEMASK | RTLD_GLOBAL | RTLD_TRACE));
1497                 printf(")\n");
1498                 break;
1499         case UTRACE_DLOPEN_STOP:
1500                 printf("%p = dlopen(%s) ref %d\n", ut->handle, ut->name,
1501                     ut->refcnt);
1502                 break;
1503         case UTRACE_DLCLOSE_START:
1504                 printf("dlclose(%p) (%s, %d)\n", ut->handle, ut->name,
1505                     ut->refcnt);
1506                 break;
1507         case UTRACE_DLCLOSE_STOP:
1508                 printf("dlclose(%p) finished\n", ut->handle);
1509                 break;
1510         case UTRACE_LOAD_OBJECT:
1511                 printf("RTLD: loaded   %p @ %p - %p (%s)\n", ut->handle,
1512                     ut->mapbase, (char *)ut->mapbase + ut->mapsize - 1,
1513                     ut->name);
1514                 break;
1515         case UTRACE_UNLOAD_OBJECT:
1516                 printf("RTLD: unloaded %p @ %p - %p (%s)\n", ut->handle,
1517                     ut->mapbase, (char *)ut->mapbase + ut->mapsize - 1,
1518                     ut->name);
1519                 break;
1520         case UTRACE_ADD_RUNDEP:
1521                 parent = ut->mapbase;
1522                 printf("RTLD: %p now depends on %p (%s, %d)\n", parent,
1523                     ut->handle, ut->name, ut->refcnt);
1524                 break;
1525         case UTRACE_PRELOAD_FINISHED:
1526                 printf("RTLD: LD_PRELOAD finished\n");
1527                 break;
1528         case UTRACE_INIT_CALL:
1529                 printf("RTLD: init %p for %p (%s)\n", ut->mapbase, ut->handle,
1530                     ut->name);
1531                 break;
1532         case UTRACE_FINI_CALL:
1533                 printf("RTLD: fini %p for %p (%s)\n", ut->mapbase, ut->handle,
1534                     ut->name);
1535                 break;
1536         case UTRACE_DLSYM_START:
1537                 printf("RTLD: dlsym(%p, %s)\n", ut->handle, ut->name);
1538                 break;
1539         case UTRACE_DLSYM_STOP:
1540                 printf("RTLD: %p = dlsym(%p, %s)\n", ut->mapbase, ut->handle,
1541                     ut->name);
1542                 break;
1543         default:
1544                 cp = p;
1545                 cp += 4;
1546                 len -= 4;
1547                 printf("RTLD: %d ", len);
1548                 while (len--)
1549                         if (decimal)
1550                                 printf(" %d", *cp++);
1551                         else
1552                                 printf(" %02x", *cp++);
1553                 printf("\n");
1554         }
1555 }
1556
1557 struct utrace_malloc {
1558         void *p;
1559         size_t s;
1560         void *r;
1561 };
1562
1563 void
1564 ktruser_malloc(void *p)
1565 {
1566         struct utrace_malloc *ut = p;
1567
1568         if (ut->p == (void *)(intptr_t)(-1))
1569                 printf("malloc_init()\n");
1570         else if (ut->s == 0)
1571                 printf("free(%p)\n", ut->p);
1572         else if (ut->p == NULL)
1573                 printf("%p = malloc(%zu)\n", ut->r, ut->s);
1574         else
1575                 printf("%p = realloc(%p, %zu)\n", ut->r, ut->p, ut->s);
1576 }
1577
1578 void
1579 ktruser(int len, void *p)
1580 {
1581         unsigned char *cp;
1582
1583         if (len >= 8 && bcmp(p, "RTLD", 4) == 0) {
1584                 ktruser_rtld(len, p);
1585                 return;
1586         }
1587
1588         if (len == sizeof(struct utrace_malloc)) {
1589                 ktruser_malloc(p);
1590                 return;
1591         }
1592
1593         printf("%d ", len);
1594         cp = p;
1595         while (len--)
1596                 if (decimal)
1597                         printf(" %d", *cp++);
1598                 else
1599                         printf(" %02x", *cp++);
1600         printf("\n");
1601 }
1602
1603 void
1604 ktrcaprights(cap_rights_t *rightsp)
1605 {
1606
1607         printf("cap_rights_t ");
1608         capname(rightsp);
1609         printf("\n");
1610 }
1611
1612 void
1613 ktrsockaddr(struct sockaddr *sa)
1614 {
1615 /*
1616  TODO: Support additional address families
1617         #include <netnatm/natm.h>
1618         struct sockaddr_natm    *natm;
1619         #include <netsmb/netbios.h>
1620         struct sockaddr_nb      *nb;
1621 */
1622         char addr[64];
1623
1624         /*
1625          * note: ktrstruct() has already verified that sa points to a
1626          * buffer at least sizeof(struct sockaddr) bytes long and exactly
1627          * sa->sa_len bytes long.
1628          */
1629         printf("struct sockaddr { ");
1630         sockfamilyname(sa->sa_family);
1631         printf(", ");
1632
1633 #define check_sockaddr_len(n)                                   \
1634         if (sa_##n.s##n##_len < sizeof(struct sockaddr_##n)) {  \
1635                 printf("invalid");                              \
1636                 break;                                          \
1637         }
1638
1639         switch(sa->sa_family) {
1640         case AF_INET: {
1641                 struct sockaddr_in sa_in;
1642
1643                 memset(&sa_in, 0, sizeof(sa_in));
1644                 memcpy(&sa_in, sa, sa->sa_len);
1645                 check_sockaddr_len(in);
1646                 inet_ntop(AF_INET, &sa_in.sin_addr, addr, sizeof addr);
1647                 printf("%s:%u", addr, ntohs(sa_in.sin_port));
1648                 break;
1649         }
1650 #ifdef NETATALK
1651         case AF_APPLETALK: {
1652                 struct sockaddr_at      sa_at;
1653                 struct netrange         *nr;
1654
1655                 memset(&sa_at, 0, sizeof(sa_at));
1656                 memcpy(&sa_at, sa, sa->sa_len);
1657                 check_sockaddr_len(at);
1658                 nr = &sa_at.sat_range.r_netrange;
1659                 printf("%d.%d, %d-%d, %d", ntohs(sa_at.sat_addr.s_net),
1660                         sa_at.sat_addr.s_node, ntohs(nr->nr_firstnet),
1661                         ntohs(nr->nr_lastnet), nr->nr_phase);
1662                 break;
1663         }
1664 #endif
1665         case AF_INET6: {
1666                 struct sockaddr_in6 sa_in6;
1667
1668                 memset(&sa_in6, 0, sizeof(sa_in6));
1669                 memcpy(&sa_in6, sa, sa->sa_len);
1670                 check_sockaddr_len(in6);
1671                 getnameinfo((struct sockaddr *)&sa_in6, sizeof(sa_in6),
1672                     addr, sizeof(addr), NULL, 0, NI_NUMERICHOST);
1673                 printf("[%s]:%u", addr, htons(sa_in6.sin6_port));
1674                 break;
1675         }
1676 #ifdef IPX
1677         case AF_IPX: {
1678                 struct sockaddr_ipx sa_ipx;
1679
1680                 memset(&sa_ipx, 0, sizeof(sa_ipx));
1681                 memcpy(&sa_ipx, sa, sa->sa_len);
1682                 check_sockaddr_len(ipx);
1683                 /* XXX wish we had ipx_ntop */
1684                 printf("%s", ipx_ntoa(sa_ipx.sipx_addr));
1685                 free(sa_ipx);
1686                 break;
1687         }
1688 #endif
1689         case AF_UNIX: {
1690                 struct sockaddr_un sa_un;
1691
1692                 memset(&sa_un, 0, sizeof(sa_un));
1693                 memcpy(&sa_un, sa, sa->sa_len);
1694                 printf("%.*s", (int)sizeof(sa_un.sun_path), sa_un.sun_path);
1695                 break;
1696         }
1697         default:
1698                 printf("unknown address family");
1699         }
1700         printf(" }\n");
1701 }
1702
1703 void
1704 ktrstat(struct stat *statp)
1705 {
1706         char mode[12], timestr[PATH_MAX + 4];
1707         struct passwd *pwd;
1708         struct group  *grp;
1709         struct tm *tm;
1710
1711         /*
1712          * note: ktrstruct() has already verified that statp points to a
1713          * buffer exactly sizeof(struct stat) bytes long.
1714          */
1715         printf("struct stat {");
1716         printf("dev=%ju, ino=%ju, ",
1717                 (uintmax_t)statp->st_dev, (uintmax_t)statp->st_ino);
1718         if (resolv == 0)
1719                 printf("mode=0%jo, ", (uintmax_t)statp->st_mode);
1720         else {
1721                 strmode(statp->st_mode, mode);
1722                 printf("mode=%s, ", mode);
1723         }
1724         printf("nlink=%ju, ", (uintmax_t)statp->st_nlink);
1725         if (resolv == 0 || (pwd = getpwuid(statp->st_uid)) == NULL)
1726                 printf("uid=%ju, ", (uintmax_t)statp->st_uid);
1727         else
1728                 printf("uid=\"%s\", ", pwd->pw_name);
1729         if (resolv == 0 || (grp = getgrgid(statp->st_gid)) == NULL)
1730                 printf("gid=%ju, ", (uintmax_t)statp->st_gid);
1731         else
1732                 printf("gid=\"%s\", ", grp->gr_name);
1733         printf("rdev=%ju, ", (uintmax_t)statp->st_rdev);
1734         printf("atime=");
1735         if (resolv == 0)
1736                 printf("%jd", (intmax_t)statp->st_atim.tv_sec);
1737         else {
1738                 tm = localtime(&statp->st_atim.tv_sec);
1739                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1740                 printf("\"%s\"", timestr);
1741         }
1742         if (statp->st_atim.tv_nsec != 0)
1743                 printf(".%09ld, ", statp->st_atim.tv_nsec);
1744         else
1745                 printf(", ");
1746         printf("stime=");
1747         if (resolv == 0)
1748                 printf("%jd", (intmax_t)statp->st_mtim.tv_sec);
1749         else {
1750                 tm = localtime(&statp->st_mtim.tv_sec);
1751                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1752                 printf("\"%s\"", timestr);
1753         }
1754         if (statp->st_mtim.tv_nsec != 0)
1755                 printf(".%09ld, ", statp->st_mtim.tv_nsec);
1756         else
1757                 printf(", ");
1758         printf("ctime=");
1759         if (resolv == 0)
1760                 printf("%jd", (intmax_t)statp->st_ctim.tv_sec);
1761         else {
1762                 tm = localtime(&statp->st_ctim.tv_sec);
1763                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1764                 printf("\"%s\"", timestr);
1765         }
1766         if (statp->st_ctim.tv_nsec != 0)
1767                 printf(".%09ld, ", statp->st_ctim.tv_nsec);
1768         else
1769                 printf(", ");
1770         printf("birthtime=");
1771         if (resolv == 0)
1772                 printf("%jd", (intmax_t)statp->st_birthtim.tv_sec);
1773         else {
1774                 tm = localtime(&statp->st_birthtim.tv_sec);
1775                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1776                 printf("\"%s\"", timestr);
1777         }
1778         if (statp->st_birthtim.tv_nsec != 0)
1779                 printf(".%09ld, ", statp->st_birthtim.tv_nsec);
1780         else
1781                 printf(", ");
1782         printf("size=%jd, blksize=%ju, blocks=%jd, flags=0x%x",
1783                 (uintmax_t)statp->st_size, (uintmax_t)statp->st_blksize,
1784                 (intmax_t)statp->st_blocks, statp->st_flags);
1785         printf(" }\n");
1786 }
1787
1788 void
1789 ktrstruct(char *buf, size_t buflen)
1790 {
1791         char *name, *data;
1792         size_t namelen, datalen;
1793         int i;
1794         cap_rights_t rights;
1795         struct stat sb;
1796         struct sockaddr_storage ss;
1797
1798         for (name = buf, namelen = 0;
1799              namelen < buflen && name[namelen] != '\0';
1800              ++namelen)
1801                 /* nothing */;
1802         if (namelen == buflen)
1803                 goto invalid;
1804         if (name[namelen] != '\0')
1805                 goto invalid;
1806         data = buf + namelen + 1;
1807         datalen = buflen - namelen - 1;
1808         if (datalen == 0)
1809                 goto invalid;
1810         /* sanity check */
1811         for (i = 0; i < (int)namelen; ++i)
1812                 if (!isalpha(name[i]))
1813                         goto invalid;
1814         if (strcmp(name, "caprights") == 0) {
1815                 if (datalen != sizeof(cap_rights_t))
1816                         goto invalid;
1817                 memcpy(&rights, data, datalen);
1818                 ktrcaprights(&rights);
1819         } else if (strcmp(name, "stat") == 0) {
1820                 if (datalen != sizeof(struct stat))
1821                         goto invalid;
1822                 memcpy(&sb, data, datalen);
1823                 ktrstat(&sb);
1824         } else if (strcmp(name, "sockaddr") == 0) {
1825                 if (datalen > sizeof(ss))
1826                         goto invalid;
1827                 memcpy(&ss, data, datalen);
1828                 if (datalen != ss.ss_len)
1829                         goto invalid;
1830                 ktrsockaddr((struct sockaddr *)&ss);
1831         } else {
1832                 printf("unknown structure\n");
1833         }
1834         return;
1835 invalid:
1836         printf("invalid record\n");
1837 }
1838
1839 void
1840 ktrcapfail(struct ktr_cap_fail *ktr)
1841 {
1842         switch (ktr->cap_type) {
1843         case CAPFAIL_NOTCAPABLE:
1844                 /* operation on fd with insufficient capabilities */
1845                 printf("operation requires ");
1846                 capname(&ktr->cap_needed);
1847                 printf(", process holds ");
1848                 capname(&ktr->cap_held);
1849                 break;
1850         case CAPFAIL_INCREASE:
1851                 /* requested more capabilities than fd already has */
1852                 printf("attempt to increase capabilities from ");
1853                 capname(&ktr->cap_held);
1854                 printf(" to ");
1855                 capname(&ktr->cap_needed);
1856                 break;
1857         case CAPFAIL_SYSCALL:
1858                 /* called restricted syscall */
1859                 printf("disallowed system call");
1860                 break;
1861         case CAPFAIL_LOOKUP:
1862                 /* used ".." in strict-relative mode */
1863                 printf("restricted VFS lookup");
1864                 break;
1865         default:
1866                 printf("unknown capability failure: ");
1867                 capname(&ktr->cap_needed);
1868                 printf(" ");
1869                 capname(&ktr->cap_held);
1870                 break;
1871         }
1872         printf("\n");
1873 }
1874
1875 void
1876 ktrfault(struct ktr_fault *ktr)
1877 {
1878
1879         printf("0x%jx ", (uintmax_t)ktr->vaddr);
1880         vmprotname(ktr->type);
1881         printf("\n");
1882 }
1883
1884 void
1885 ktrfaultend(struct ktr_faultend *ktr)
1886 {
1887
1888         vmresultname(ktr->result);
1889         printf("\n");
1890 }
1891
1892 #if defined(__amd64__) || defined(__i386__)
1893 void
1894 linux_ktrsyscall(struct ktr_syscall *ktr)
1895 {
1896         int narg = ktr->ktr_narg;
1897         register_t *ip;
1898
1899         if (ktr->ktr_code >= nlinux_syscalls || ktr->ktr_code < 0)
1900                 printf("[%d]", ktr->ktr_code);
1901         else {
1902                 printf("%s", linux_syscallnames[ktr->ktr_code]);
1903                 if (syscallno)
1904                         printf("[%d]", ktr->ktr_code);
1905         }
1906         ip = &ktr->ktr_args[0];
1907         if (narg) {
1908                 char c = '(';
1909                 while (narg > 0)
1910                         print_number(ip, narg, c);
1911                 putchar(')');
1912         }
1913         putchar('\n');
1914 }
1915
1916 void
1917 linux_ktrsysret(struct ktr_sysret *ktr)
1918 {
1919         register_t ret = ktr->ktr_retval;
1920         int error = ktr->ktr_error;
1921         int code = ktr->ktr_code;
1922
1923         if (code >= nlinux_syscalls || code < 0)
1924                 printf("[%d] ", code);
1925         else {
1926                 printf("%s", linux_syscallnames[code]);
1927                 if (syscallno)
1928                         printf("[%d]", code);
1929                 printf(" ");
1930         }
1931
1932         if (error == 0) {
1933                 if (fancy) {
1934                         printf("%ld", (long)ret);
1935                         if (ret < 0 || ret > 9)
1936                                 printf("/%#lx", (unsigned long)ret);
1937                 } else {
1938                         if (decimal)
1939                                 printf("%ld", (long)ret);
1940                         else
1941                                 printf("%#lx", (unsigned long)ret);
1942                 }
1943         } else if (error == ERESTART)
1944                 printf("RESTART");
1945         else if (error == EJUSTRETURN)
1946                 printf("JUSTRETURN");
1947         else {
1948                 if (ktr->ktr_error <= ELAST + 1)
1949                         error = abs(bsd_to_linux_errno[ktr->ktr_error]);
1950                 else
1951                         error = 999;
1952                 printf("-1 errno %d", error);
1953                 if (fancy)
1954                         printf(" %s", strerror(ktr->ktr_error));
1955         }
1956         putchar('\n');
1957 }
1958 #endif
1959
1960 void
1961 usage(void)
1962 {
1963         fprintf(stderr, "usage: kdump [-dEnlHRrSsTA] [-f trfile] "
1964             "[-m maxdata] [-p pid] [-t trstr]\n");
1965         exit(1);
1966 }