usr.bin/kdump/kdump.c

   1 /*-
   2  * Copyright (c) 1988, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #ifndef lint
  35 static const char copyright[] =
  36 "@(#) Copyright (c) 1988, 1993\n\
  37         The Regents of the University of California.  All rights reserved.\n";
  38 #endif /* not lint */
  39
  40 #ifndef lint
  41 #if 0
  42 static char sccsid[] = "@(#)kdump.c     8.1 (Berkeley) 6/6/93";
  43 #endif
  44 #endif /* not lint */
  45 #include <sys/cdefs.h>
  46 __FBSDID("$FreeBSD$");
  47
  48 #define _KERNEL
  49 extern int errno;
  50 #include <sys/errno.h>
  51 #undef _KERNEL
  52 #include <sys/param.h>
  53 #include <sys/errno.h>
  54 #define _KERNEL
  55 #include <sys/time.h>
  56 #undef _KERNEL
  57 #include <sys/uio.h>
  58 #include <sys/ktrace.h>
  59 #include <sys/ioctl.h>
  60 #include <sys/socket.h>
  61 #include <sys/stat.h>
  62 #include <sys/sysent.h>
  63 #include <sys/un.h>
  64 #include <sys/queue.h>
  65 #ifdef IPX
  66 #include <sys/types.h>
  67 #include <netipx/ipx.h>
  68 #endif
  69 #ifdef NETATALK
  70 #include <netatalk/at.h>
  71 #endif
  72 #include <arpa/inet.h>
  73 #include <netinet/in.h>
  74 #include <ctype.h>
  75 #include <dlfcn.h>
  76 #include <err.h>
  77 #include <grp.h>
  78 #include <inttypes.h>
  79 #include <locale.h>
  80 #include <pwd.h>
  81 #include <stdio.h>
  82 #include <stdlib.h>
  83 #include <string.h>
  84 #include <time.h>
  85 #include <unistd.h>
  86 #include <vis.h>
  87 #include "ktrace.h"
  88 #include "kdump_subr.h"
  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, unsigned char *);
 104 void ktrsockaddr(struct sockaddr *);
 105 void ktrstat(struct stat *);
 106 void ktrstruct(char *, size_t);
 107 void ktrfault(struct ktr_fault *);
 108 void ktrfaultend(struct ktr_faultend *);
 109 void usage(void);
 110 void sockfamilyname(int);
 111 const char *ioctlname(u_long);
 112
 113 int timestamp, decimal, fancy = 1, suppressdata, tail, threads, maxdata,
 114     resolv = 0, abiflag = 0;
 115 const char *tracefile = DEF_TRACEFILE;
 116 struct ktr_header ktr_header;
 117
 118 #define TIME_FORMAT     "%b %e %T %Y"
 119 #define eqs(s1, s2)     (strcmp((s1), (s2)) == 0)
 120
 121 #define print_number(i,n,c) do {                \
 122         if (decimal)                            \
 123                 printf("%c%ld", c, (long)*i);   \
 124         else                                    \
 125                 printf("%c%#lx", c, (long)*i);  \
 126         i++;                                    \
 127         n--;                                    \
 128         c = ',';                                \
 129         } while (0);
 130
 131 #if defined(__amd64__) || defined(__i386__)
 132
 133 void linux_ktrsyscall(struct ktr_syscall *);
 134 void linux_ktrsysret(struct ktr_sysret *);
 135 extern char *linux_syscallnames[];
 136 extern int nlinux_syscalls;
 137
 138 /*
 139  * from linux.h
 140  * Linux syscalls return negative errno's, we do positive and map them
 141  */
 142 static int bsd_to_linux_errno[ELAST + 1] = {
 143         -0,  -1,  -2,  -3,  -4,  -5,  -6,  -7,  -8,  -9,
 144         -10, -35, -12, -13, -14, -15, -16, -17, -18, -19,
 145         -20, -21, -22, -23, -24, -25, -26, -27, -28, -29,
 146         -30, -31, -32, -33, -34, -11,-115,-114, -88, -89,
 147         -90, -91, -92, -93, -94, -95, -96, -97, -98, -99,
 148         -100,-101,-102,-103,-104,-105,-106,-107,-108,-109,
 149         -110,-111, -40, -36,-112,-113, -39, -11, -87,-122,
 150         -116, -66,  -6,  -6,  -6,  -6,  -6, -37, -38,  -9,
 151         -6,  -6, -43, -42, -75,-125, -84, -95, -16, -74,
 152         -72, -67, -71
 153 };
 154 #endif
 155
 156 struct proc_info
 157 {
 158         TAILQ_ENTRY(proc_info)  info;
 159         u_int                   sv_flags;
 160         pid_t                   pid;
 161 };
 162
 163 TAILQ_HEAD(trace_procs, proc_info) trace_procs;
 164
 165 int
 166 main(int argc, char *argv[])
 167 {
 168         int ch, ktrlen, size;
 169         void *m;
 170         int trpoints = ALL_POINTS;
 171         int drop_logged;
 172         pid_t pid = 0;
 173         u_int sv_flags;
 174
 175         (void) setlocale(LC_CTYPE, "");
 176
 177         while ((ch = getopt(argc,argv,"f:dElm:np:AHRrsTt:")) != -1)
 178                 switch((char)ch) {
 179                 case 'A':
 180                         abiflag = 1;
 181                         break;
 182                 case 'f':
 183                         tracefile = optarg;
 184                         break;
 185                 case 'd':
 186                         decimal = 1;
 187                         break;
 188                 case 'l':
 189                         tail = 1;
 190                         break;
 191                 case 'm':
 192                         maxdata = atoi(optarg);
 193                         break;
 194                 case 'n':
 195                         fancy = 0;
 196                         break;
 197                 case 'p':
 198                         pid = atoi(optarg);
 199                         break;
 200                 case 'r':
 201                         resolv = 1;
 202                         break;
 203                 case 's':
 204                         suppressdata = 1;
 205                         break;
 206                 case 'E':
 207                         timestamp = 3;  /* elapsed timestamp */
 208                         break;
 209                 case 'H':
 210                         threads = 1;
 211                         break;
 212                 case 'R':
 213                         timestamp = 2;  /* relative timestamp */
 214                         break;
 215                 case 'T':
 216                         timestamp = 1;
 217                         break;
 218                 case 't':
 219                         trpoints = getpoints(optarg);
 220                         if (trpoints < 0)
 221                                 errx(1, "unknown trace point in %s", optarg);
 222                         break;
 223                 default:
 224                         usage();
 225                 }
 226
 227         if (argc > optind)
 228                 usage();
 229
 230         m = (void *)malloc(size = 1025);
 231         if (m == NULL)
 232                 errx(1, "%s", strerror(ENOMEM));
 233         if (!freopen(tracefile, "r", stdin))
 234                 err(1, "%s", tracefile);
 235         TAILQ_INIT(&trace_procs);
 236         drop_logged = 0;
 237         while (fread_tail(&ktr_header, sizeof(struct ktr_header), 1)) {
 238                 if (ktr_header.ktr_type & KTR_DROP) {
 239                         ktr_header.ktr_type &= ~KTR_DROP;
 240                         if (!drop_logged && threads) {
 241                                 (void)printf(
 242                                     "%6jd %6jd %-8.*s Events dropped.\n",
 243                                     (intmax_t)ktr_header.ktr_pid,
 244                                     ktr_header.ktr_tid > 0 ?
 245                                     (intmax_t)ktr_header.ktr_tid : 0,
 246                                     MAXCOMLEN, ktr_header.ktr_comm);
 247                                 drop_logged = 1;
 248                         } else if (!drop_logged) {
 249                                 (void)printf("%6jd %-8.*s Events dropped.\n",
 250                                     (intmax_t)ktr_header.ktr_pid, MAXCOMLEN,
 251                                     ktr_header.ktr_comm);
 252                                 drop_logged = 1;
 253                         }
 254                 }
 255                 if (trpoints & (1<<ktr_header.ktr_type))
 256                         if (pid == 0 || ktr_header.ktr_pid == pid ||
 257                             ktr_header.ktr_tid == pid)
 258                                 dumpheader(&ktr_header);
 259                 if ((ktrlen = ktr_header.ktr_len) < 0)
 260                         errx(1, "bogus length 0x%x", ktrlen);
 261                 if (ktrlen > size) {
 262                         m = (void *)realloc(m, ktrlen+1);
 263                         if (m == NULL)
 264                                 errx(1, "%s", strerror(ENOMEM));
 265                         size = ktrlen;
 266                 }
 267                 if (ktrlen && fread_tail(m, ktrlen, 1) == 0)
 268                         errx(1, "data too short");
 269                 if (fetchprocinfo(&ktr_header, (u_int *)m) != 0)
 270                         continue;
 271                 sv_flags = abidump(&ktr_header);
 272                 if (pid && ktr_header.ktr_pid != pid &&
 273                     ktr_header.ktr_tid != pid)
 274                         continue;
 275                 if ((trpoints & (1<<ktr_header.ktr_type)) == 0)
 276                         continue;
 277                 drop_logged = 0;
 278                 switch (ktr_header.ktr_type) {
 279                 case KTR_SYSCALL:
 280 #if defined(__amd64__) || defined(__i386__)
 281                         if ((sv_flags & SV_ABI_MASK) == SV_ABI_LINUX)
 282                                 linux_ktrsyscall((struct ktr_syscall *)m);
 283                         else
 284 #endif
 285                                 ktrsyscall((struct ktr_syscall *)m, sv_flags);
 286                         break;
 287                 case KTR_SYSRET:
 288 #if defined(__amd64__) || defined(__i386__)
 289                         if ((sv_flags & SV_ABI_MASK) == SV_ABI_LINUX)
 290                                 linux_ktrsysret((struct ktr_sysret *)m);
 291                         else
 292 #endif
 293                                 ktrsysret((struct ktr_sysret *)m, sv_flags);
 294                         break;
 295                 case KTR_NAMEI:
 296                 case KTR_SYSCTL:
 297                         ktrnamei(m, ktrlen);
 298                         break;
 299                 case KTR_GENIO:
 300                         ktrgenio((struct ktr_genio *)m, ktrlen);
 301                         break;
 302                 case KTR_PSIG:
 303                         ktrpsig((struct ktr_psig *)m);
 304                         break;
 305                 case KTR_CSW:
 306                         if (ktrlen == sizeof(struct ktr_csw_old))
 307                                 ktrcsw_old((struct ktr_csw_old *)m);
 308                         else
 309                                 ktrcsw((struct ktr_csw *)m);
 310                         break;
 311                 case KTR_USER:
 312                         ktruser(ktrlen, m);
 313                         break;
 314                 case KTR_STRUCT:
 315                         ktrstruct(m, ktrlen);
 316                         break;
 317                 case KTR_FAULT:
 318                         ktrfault((struct ktr_fault *)m);
 319                         break;
 320                 case KTR_FAULTEND:
 321                         ktrfaultend((struct ktr_faultend *)m);
 322                         break;
 323                 default:
 324                         printf("\n");
 325                         break;
 326                 }
 327                 if (tail)
 328                         (void)fflush(stdout);
 329         }
 330         return 0;
 331 }
 332
 333 int
 334 fread_tail(void *buf, int size, int num)
 335 {
 336         int i;
 337
 338         while ((i = fread(buf, size, num, stdin)) == 0 && tail) {
 339                 (void)sleep(1);
 340                 clearerr(stdin);
 341         }
 342         return (i);
 343 }
 344
 345 int
 346 fetchprocinfo(struct ktr_header *kth, u_int *flags)
 347 {
 348         struct proc_info *pi;
 349
 350         switch (kth->ktr_type) {
 351         case KTR_PROCCTOR:
 352                 TAILQ_FOREACH(pi, &trace_procs, info) {
 353                         if (pi->pid == kth->ktr_pid) {
 354                                 TAILQ_REMOVE(&trace_procs, pi, info);
 355                                 break;
 356                         }
 357                 }
 358                 pi = malloc(sizeof(struct proc_info));
 359                 if (pi == NULL)
 360                         errx(1, "%s", strerror(ENOMEM));
 361                 pi->sv_flags = *flags;
 362                 pi->pid = kth->ktr_pid;
 363                 TAILQ_INSERT_TAIL(&trace_procs, pi, info);
 364                 return (1);
 365
 366         case KTR_PROCDTOR:
 367                 TAILQ_FOREACH(pi, &trace_procs, info) {
 368                         if (pi->pid == kth->ktr_pid) {
 369                                 TAILQ_REMOVE(&trace_procs, pi, info);
 370                                 free(pi);
 371                                 break;
 372                         }
 373                 }
 374                 return (1);
 375         }
 376
 377         return (0);
 378 }
 379
 380 u_int
 381 abidump(struct ktr_header *kth)
 382 {
 383         struct proc_info *pi;
 384         const char *abi;
 385         const char *arch;
 386         u_int flags = 0;
 387
 388         TAILQ_FOREACH(pi, &trace_procs, info) {
 389                 if (pi->pid == kth->ktr_pid) {
 390                         flags = pi->sv_flags;
 391                         break;
 392                 }
 393         }
 394
 395         if (abiflag == 0)
 396                 return (flags);
 397
 398         switch (flags & SV_ABI_MASK) {
 399         case SV_ABI_LINUX:
 400                 abi = "L";
 401                 break;
 402         case SV_ABI_FREEBSD:
 403                 abi = "F";
 404                 break;
 405         default:
 406                 abi = "U";
 407                 break;
 408         }
 409
 410         if (flags != 0) {
 411                 if (flags & SV_LP64)
 412                         arch = "64";
 413                 else
 414                         arch = "32";
 415         } else
 416                 arch = "00";
 417
 418         printf("%s%s  ", abi, arch);
 419
 420         return (flags);
 421 }
 422
 423 void
 424 dumpheader(struct ktr_header *kth)
 425 {
 426         static char unknown[64];
 427         static struct timeval prevtime, temp;
 428         const char *type;
 429
 430         switch (kth->ktr_type) {
 431         case KTR_SYSCALL:
 432                 type = "CALL";
 433                 break;
 434         case KTR_SYSRET:
 435                 type = "RET ";
 436                 break;
 437         case KTR_NAMEI:
 438                 type = "NAMI";
 439                 break;
 440         case KTR_GENIO:
 441                 type = "GIO ";
 442                 break;
 443         case KTR_PSIG:
 444                 type = "PSIG";
 445                 break;
 446         case KTR_CSW:
 447                 type = "CSW ";
 448                 break;
 449         case KTR_USER:
 450                 type = "USER";
 451                 break;
 452         case KTR_STRUCT:
 453                 type = "STRU";
 454                 break;
 455         case KTR_SYSCTL:
 456                 type = "SCTL";
 457                 break;
 458         case KTR_PROCCTOR:
 459                 /* FALLTHROUGH */
 460         case KTR_PROCDTOR:
 461                 return;
 462         case KTR_FAULT:
 463                 type = "PFLT";
 464                 break;
 465         case KTR_FAULTEND:
 466                 type = "PRET";
 467                 break;
 468         default:
 469                 (void)sprintf(unknown, "UNKNOWN(%d)", kth->ktr_type);
 470                 type = unknown;
 471         }
 472
 473         /*
 474          * The ktr_tid field was previously the ktr_buffer field, which held
 475          * the kernel pointer value for the buffer associated with data
 476          * following the record header.  It now holds a threadid, but only
 477          * for trace files after the change.  Older trace files still contain
 478          * kernel pointers.  Detect this and suppress the results by printing
 479          * negative tid's as 0.
 480          */
 481         if (threads)
 482                 (void)printf("%6jd %6jd %-8.*s ", (intmax_t)kth->ktr_pid,
 483                     kth->ktr_tid > 0 ? (intmax_t)kth->ktr_tid : 0,
 484                     MAXCOMLEN, kth->ktr_comm);
 485         else
 486                 (void)printf("%6jd %-8.*s ", (intmax_t)kth->ktr_pid, MAXCOMLEN,
 487                     kth->ktr_comm);
 488         if (timestamp) {
 489                 if (timestamp == 3) {
 490                         if (prevtime.tv_sec == 0)
 491                                 prevtime = kth->ktr_time;
 492                         timevalsub(&kth->ktr_time, &prevtime);
 493                 }
 494                 if (timestamp == 2) {
 495                         temp = kth->ktr_time;
 496                         timevalsub(&kth->ktr_time, &prevtime);
 497                         prevtime = temp;
 498                 }
 499                 (void)printf("%jd.%06ld ", (intmax_t)kth->ktr_time.tv_sec,
 500                     kth->ktr_time.tv_usec);
 501         }
 502         (void)printf("%s  ", type);
 503 }
 504
 505 #include <sys/syscall.h>
 506 #define KTRACE
 507 #include <sys/kern/syscalls.c>
 508 #undef KTRACE
 509 int nsyscalls = sizeof (syscallnames) / sizeof (syscallnames[0]);
 510
 511 void
 512 ktrsyscall(struct ktr_syscall *ktr, u_int flags)
 513 {
 514         int narg = ktr->ktr_narg;
 515         register_t *ip;
 516
 517         if ((flags != 0 && ((flags & SV_ABI_MASK) != SV_ABI_FREEBSD)) ||
 518             (ktr->ktr_code >= nsyscalls || ktr->ktr_code < 0))
 519                 (void)printf("[%d]", ktr->ktr_code);
 520         else
 521                 (void)printf("%s", syscallnames[ktr->ktr_code]);
 522         ip = &ktr->ktr_args[0];
 523         if (narg) {
 524                 char c = '(';
 525                 if (fancy &&
 526                     (flags == 0 || (flags & SV_ABI_MASK) == SV_ABI_FREEBSD)) {
 527                         if (ktr->ktr_code == SYS_ioctl) {
 528                                 const char *cp;
 529                                 print_number(ip,narg,c);
 530                                 if ((cp = ioctlname(*ip)) != NULL)
 531                                         (void)printf(",%s", cp);
 532                                 else {
 533                                         if (decimal)
 534                                                 (void)printf(",%ld", (long)*ip);
 535                                         else
 536                                                 (void)printf(",%#lx ", (long)*ip);
 537                                 }
 538                                 c = ',';
 539                                 ip++;
 540                                 narg--;
 541                         } else if (ktr->ktr_code == SYS_ptrace) {
 542                                 (void)putchar('(');
 543                                 ptraceopname ((int)*ip);
 544                                 c = ',';
 545                                 ip++;
 546                                 narg--;
 547                         } else if (ktr->ktr_code == SYS_access ||
 548                                    ktr->ktr_code == SYS_eaccess) {
 549                                 print_number(ip,narg,c);
 550                                 (void)putchar(',');
 551                                 accessmodename ((int)*ip);
 552                                 ip++;
 553                                 narg--;
 554                         } else if (ktr->ktr_code == SYS_open) {
 555                                 int     flags;
 556                                 int     mode;
 557                                 print_number(ip,narg,c);
 558                                 flags = *ip;
 559                                 mode = *++ip;
 560                                 (void)putchar(',');
 561                                 flagsandmodename (flags, mode, decimal);
 562                                 ip++;
 563                                 narg-=2;
 564                         } else if (ktr->ktr_code == SYS_wait4) {
 565                                 print_number(ip,narg,c);
 566                                 print_number(ip,narg,c);
 567                                 (void)putchar(',');
 568                                 wait4optname ((int)*ip);
 569                                 ip++;
 570                                 narg--;
 571                         } else if (ktr->ktr_code == SYS_chmod ||
 572                                    ktr->ktr_code == SYS_fchmod ||
 573                                    ktr->ktr_code == SYS_lchmod) {
 574                                 print_number(ip,narg,c);
 575                                 (void)putchar(',');
 576                                 modename ((int)*ip);
 577                                 ip++;
 578                                 narg--;
 579                         } else if (ktr->ktr_code == SYS_mknod) {
 580                                 print_number(ip,narg,c);
 581                                 (void)putchar(',');
 582                                 modename ((int)*ip);
 583                                 ip++;
 584                                 narg--;
 585                         } else if (ktr->ktr_code == SYS_getfsstat) {
 586                                 print_number(ip,narg,c);
 587                                 print_number(ip,narg,c);
 588                                 (void)putchar(',');
 589                                 getfsstatflagsname ((int)*ip);
 590                                 ip++;
 591                                 narg--;
 592                         } else if (ktr->ktr_code == SYS_mount) {
 593                                 print_number(ip,narg,c);
 594                                 print_number(ip,narg,c);
 595                                 (void)putchar(',');
 596                                 mountflagsname ((int)*ip);
 597                                 ip++;
 598                                 narg--;
 599                         } else if (ktr->ktr_code == SYS_unmount) {
 600                                 print_number(ip,narg,c);
 601                                 (void)putchar(',');
 602                                 mountflagsname ((int)*ip);
 603                                 ip++;
 604                                 narg--;
 605                         } else if (ktr->ktr_code == SYS_recvmsg ||
 606                                    ktr->ktr_code == SYS_sendmsg) {
 607                                 print_number(ip,narg,c);
 608                                 print_number(ip,narg,c);
 609                                 (void)putchar(',');
 610                                 sendrecvflagsname ((int)*ip);
 611                                 ip++;
 612                                 narg--;
 613                         } else if (ktr->ktr_code == SYS_recvfrom ||
 614                                    ktr->ktr_code == SYS_sendto) {
 615                                 print_number(ip,narg,c);
 616                                 print_number(ip,narg,c);
 617                                 print_number(ip,narg,c);
 618                                 (void)putchar(',');
 619                                 sendrecvflagsname ((int)*ip);
 620                                 ip++;
 621                                 narg--;
 622                         } else if (ktr->ktr_code == SYS_chflags ||
 623                                    ktr->ktr_code == SYS_fchflags ||
 624                                    ktr->ktr_code == SYS_lchflags) {
 625                                 print_number(ip,narg,c);
 626                                 (void)putchar(',');
 627                                 modename((int)*ip);
 628                                 ip++;
 629                                 narg--;
 630                         } else if (ktr->ktr_code == SYS_kill) {
 631                                 print_number(ip,narg,c);
 632                                 (void)putchar(',');
 633                                 signame((int)*ip);
 634                                 ip++;
 635                                 narg--;
 636                         } else if (ktr->ktr_code == SYS_reboot) {
 637                                 (void)putchar('(');
 638                                 rebootoptname((int)*ip);
 639                                 ip++;
 640                                 narg--;
 641                         } else if (ktr->ktr_code == SYS_umask) {
 642                                 (void)putchar('(');
 643                                 modename((int)*ip);
 644                                 ip++;
 645                                 narg--;
 646                         } else if (ktr->ktr_code == SYS_msync) {
 647                                 print_number(ip,narg,c);
 648                                 print_number(ip,narg,c);
 649                                 (void)putchar(',');
 650                                 msyncflagsname((int)*ip);
 651                                 ip++;
 652                                 narg--;
 653 #ifdef SYS_freebsd6_mmap
 654                         } else if (ktr->ktr_code == SYS_freebsd6_mmap) {
 655                                 print_number(ip,narg,c);
 656                                 print_number(ip,narg,c);
 657                                 (void)putchar(',');
 658                                 mmapprotname ((int)*ip);
 659                                 (void)putchar(',');
 660                                 ip++;
 661                                 narg--;
 662                                 mmapflagsname ((int)*ip);
 663                                 ip++;
 664                                 narg--;
 665 #endif
 666                         } else if (ktr->ktr_code == SYS_mmap) {
 667                                 print_number(ip,narg,c);
 668                                 print_number(ip,narg,c);
 669                                 (void)putchar(',');
 670                                 mmapprotname ((int)*ip);
 671                                 (void)putchar(',');
 672                                 ip++;
 673                                 narg--;
 674                                 mmapflagsname ((int)*ip);
 675                                 ip++;
 676                                 narg--;
 677                         } else if (ktr->ktr_code == SYS_mprotect) {
 678                                 print_number(ip,narg,c);
 679                                 print_number(ip,narg,c);
 680                                 (void)putchar(',');
 681                                 mmapprotname ((int)*ip);
 682                                 ip++;
 683                                 narg--;
 684                         } else if (ktr->ktr_code == SYS_madvise) {
 685                                 print_number(ip,narg,c);
 686                                 print_number(ip,narg,c);
 687                                 (void)putchar(',');
 688                                 madvisebehavname((int)*ip);
 689                                 ip++;
 690                                 narg--;
 691                         } else if (ktr->ktr_code == SYS_setpriority) {
 692                                 print_number(ip,narg,c);
 693                                 print_number(ip,narg,c);
 694                                 (void)putchar(',');
 695                                 prioname((int)*ip);
 696                                 ip++;
 697                                 narg--;
 698                         } else if (ktr->ktr_code == SYS_fcntl) {
 699                                 int cmd;
 700                                 int arg;
 701                                 print_number(ip,narg,c);
 702                                 cmd = *ip;
 703                                 arg = *++ip;
 704                                 (void)putchar(',');
 705                                 fcntlcmdname(cmd, arg, decimal);
 706                                 ip++;
 707                                 narg-=2;
 708                         } else if (ktr->ktr_code == SYS_socket) {
 709                                 int sockdomain;
 710                                 (void)putchar('(');
 711                                 sockdomain=(int)*ip;
 712                                 sockdomainname(sockdomain);
 713                                 ip++;
 714                                 narg--;
 715                                 (void)putchar(',');
 716                                 socktypename((int)*ip);
 717                                 ip++;
 718                                 narg--;
 719                                 if (sockdomain == PF_INET ||
 720                                     sockdomain == PF_INET6) {
 721                                         (void)putchar(',');
 722                                         sockipprotoname((int)*ip);
 723                                         ip++;
 724                                         narg--;
 725                                 }
 726                                 c = ',';
 727                         } else if (ktr->ktr_code == SYS_setsockopt ||
 728                                    ktr->ktr_code == SYS_getsockopt) {
 729                                 print_number(ip,narg,c);
 730                                 (void)putchar(',');
 731                                 sockoptlevelname((int)*ip, decimal);
 732                                 if ((int)*ip == SOL_SOCKET) {
 733                                         ip++;
 734                                         narg--;
 735                                         (void)putchar(',');
 736                                         sockoptname((int)*ip);
 737                                 }
 738                                 ip++;
 739                                 narg--;
 740 #ifdef SYS_freebsd6_lseek
 741                         } else if (ktr->ktr_code == SYS_freebsd6_lseek) {
 742                                 print_number(ip,narg,c);
 743                                 /* Hidden 'pad' argument, not in lseek(2) */
 744                                 print_number(ip,narg,c);
 745                                 print_number(ip,narg,c);
 746                                 (void)putchar(',');
 747                                 whencename ((int)*ip);
 748                                 ip++;
 749                                 narg--;
 750 #endif
 751                         } else if (ktr->ktr_code == SYS_lseek) {
 752                                 print_number(ip,narg,c);
 753                                 /* Hidden 'pad' argument, not in lseek(2) */
 754                                 print_number(ip,narg,c);
 755                                 (void)putchar(',');
 756                                 whencename ((int)*ip);
 757                                 ip++;
 758                                 narg--;
 759
 760                         } else if (ktr->ktr_code == SYS_flock) {
 761                                 print_number(ip,narg,c);
 762                                 (void)putchar(',');
 763                                 flockname((int)*ip);
 764                                 ip++;
 765                                 narg--;
 766                         } else if (ktr->ktr_code == SYS_mkfifo ||
 767                                    ktr->ktr_code == SYS_mkdir) {
 768                                 print_number(ip,narg,c);
 769                                 (void)putchar(',');
 770                                 modename((int)*ip);
 771                                 ip++;
 772                                 narg--;
 773                         } else if (ktr->ktr_code == SYS_shutdown) {
 774                                 print_number(ip,narg,c);
 775                                 (void)putchar(',');
 776                                 shutdownhowname((int)*ip);
 777                                 ip++;
 778                                 narg--;
 779                         } else if (ktr->ktr_code == SYS_socketpair) {
 780                                 (void)putchar('(');
 781                                 sockdomainname((int)*ip);
 782                                 ip++;
 783                                 narg--;
 784                                 (void)putchar(',');
 785                                 socktypename((int)*ip);
 786                                 ip++;
 787                                 narg--;
 788                                 c = ',';
 789                         } else if (ktr->ktr_code == SYS_getrlimit ||
 790                                    ktr->ktr_code == SYS_setrlimit) {
 791                                 (void)putchar('(');
 792                                 rlimitname((int)*ip);
 793                                 ip++;
 794                                 narg--;
 795                                 c = ',';
 796                         } else if (ktr->ktr_code == SYS_quotactl) {
 797                                 print_number(ip,narg,c);
 798                                 (void)putchar(',');
 799                                 quotactlname((int)*ip);
 800                                 ip++;
 801                                 narg--;
 802                                 c = ',';
 803                         } else if (ktr->ktr_code == SYS_nfssvc) {
 804                                 (void)putchar('(');
 805                                 nfssvcname((int)*ip);
 806                                 ip++;
 807                                 narg--;
 808                                 c = ',';
 809                         } else if (ktr->ktr_code == SYS_rtprio) {
 810                                 (void)putchar('(');
 811                                 rtprioname((int)*ip);
 812                                 ip++;
 813                                 narg--;
 814                                 c = ',';
 815                         } else if (ktr->ktr_code == SYS___semctl) {
 816                                 print_number(ip,narg,c);
 817                                 print_number(ip,narg,c);
 818                                 (void)putchar(',');
 819                                 semctlname((int)*ip);
 820                                 ip++;
 821                                 narg--;
 822                         } else if (ktr->ktr_code == SYS_semget) {
 823                                 print_number(ip,narg,c);
 824                                 print_number(ip,narg,c);
 825                                 (void)putchar(',');
 826                                 semgetname((int)*ip);
 827                                 ip++;
 828                                 narg--;
 829                         } else if (ktr->ktr_code == SYS_msgctl) {
 830                                 print_number(ip,narg,c);
 831                                 (void)putchar(',');
 832                                 shmctlname((int)*ip);
 833                                 ip++;
 834                                 narg--;
 835                         } else if (ktr->ktr_code == SYS_shmat) {
 836                                 print_number(ip,narg,c);
 837                                 print_number(ip,narg,c);
 838                                 (void)putchar(',');
 839                                 shmatname((int)*ip);
 840                                 ip++;
 841                                 narg--;
 842                         } else if (ktr->ktr_code == SYS_shmctl) {
 843                                 print_number(ip,narg,c);
 844                                 (void)putchar(',');
 845                                 shmctlname((int)*ip);
 846                                 ip++;
 847                                 narg--;
 848                         } else if (ktr->ktr_code == SYS_minherit) {
 849                                 print_number(ip,narg,c);
 850                                 print_number(ip,narg,c);
 851                                 (void)putchar(',');
 852                                 minheritname((int)*ip);
 853                                 ip++;
 854                                 narg--;
 855                         } else if (ktr->ktr_code == SYS_rfork) {
 856                                 (void)putchar('(');
 857                                 rforkname((int)*ip);
 858                                 ip++;
 859                                 narg--;
 860                                 c = ',';
 861                         } else if (ktr->ktr_code == SYS_lio_listio) {
 862                                 (void)putchar('(');
 863                                 lio_listioname((int)*ip);
 864                                 ip++;
 865                                 narg--;
 866                                 c = ',';
 867                         } else if (ktr->ktr_code == SYS_mlockall) {
 868                                 (void)putchar('(');
 869                                 mlockallname((int)*ip);
 870                                 ip++;
 871                                 narg--;
 872                         } else if (ktr->ktr_code == SYS_sched_setscheduler) {
 873                                 print_number(ip,narg,c);
 874                                 (void)putchar(',');
 875                                 schedpolicyname((int)*ip);
 876                                 ip++;
 877                                 narg--;
 878                         } else if (ktr->ktr_code == SYS_sched_get_priority_max ||
 879                                    ktr->ktr_code == SYS_sched_get_priority_min) {
 880                                 (void)putchar('(');
 881                                 schedpolicyname((int)*ip);
 882                                 ip++;
 883                                 narg--;
 884                         } else if (ktr->ktr_code == SYS_sendfile) {
 885                                 print_number(ip,narg,c);
 886                                 print_number(ip,narg,c);
 887                                 print_number(ip,narg,c);
 888                                 print_number(ip,narg,c);
 889                                 print_number(ip,narg,c);
 890                                 print_number(ip,narg,c);
 891                                 (void)putchar(',');
 892                                 sendfileflagsname((int)*ip);
 893                                 ip++;
 894                                 narg--;
 895                         } else if (ktr->ktr_code == SYS_kldsym) {
 896                                 print_number(ip,narg,c);
 897                                 (void)putchar(',');
 898                                 kldsymcmdname((int)*ip);
 899                                 ip++;
 900                                 narg--;
 901                         } else if (ktr->ktr_code == SYS_sigprocmask) {
 902                                 (void)putchar('(');
 903                                 sigprocmaskhowname((int)*ip);
 904                                 ip++;
 905                                 narg--;
 906                                 c = ',';
 907                         } else if (ktr->ktr_code == SYS___acl_get_file ||
 908                                    ktr->ktr_code == SYS___acl_set_file ||
 909                                    ktr->ktr_code == SYS___acl_get_fd ||
 910                                    ktr->ktr_code == SYS___acl_set_fd ||
 911                                    ktr->ktr_code == SYS___acl_delete_file ||
 912                                    ktr->ktr_code == SYS___acl_delete_fd ||
 913                                    ktr->ktr_code == SYS___acl_aclcheck_file ||
 914                                    ktr->ktr_code == SYS___acl_aclcheck_fd ||
 915                                    ktr->ktr_code == SYS___acl_get_link ||
 916                                    ktr->ktr_code == SYS___acl_set_link ||
 917                                    ktr->ktr_code == SYS___acl_delete_link ||
 918                                    ktr->ktr_code == SYS___acl_aclcheck_link) {
 919                                 print_number(ip,narg,c);
 920                                 (void)putchar(',');
 921                                 acltypename((int)*ip);
 922                                 ip++;
 923                                 narg--;
 924                         } else if (ktr->ktr_code == SYS_sigaction) {
 925                                 (void)putchar('(');
 926                                 signame((int)*ip);
 927                                 ip++;
 928                                 narg--;
 929                                 c = ',';
 930                         } else if (ktr->ktr_code == SYS_extattrctl) {
 931                                 print_number(ip,narg,c);
 932                                 (void)putchar(',');
 933                                 extattrctlname((int)*ip);
 934                                 ip++;
 935                                 narg--;
 936                         } else if (ktr->ktr_code == SYS_nmount) {
 937                                 print_number(ip,narg,c);
 938                                 print_number(ip,narg,c);
 939                                 (void)putchar(',');
 940                                 mountflagsname ((int)*ip);
 941                                 ip++;
 942                                 narg--;
 943                         } else if (ktr->ktr_code == SYS_thr_create) {
 944                                 print_number(ip,narg,c);
 945                                 print_number(ip,narg,c);
 946                                 (void)putchar(',');
 947                                 thrcreateflagsname ((int)*ip);
 948                                 ip++;
 949                                 narg--;
 950                         } else if (ktr->ktr_code == SYS_thr_kill) {
 951                                 print_number(ip,narg,c);
 952                                 (void)putchar(',');
 953                                 signame ((int)*ip);
 954                                 ip++;
 955                                 narg--;
 956                         } else if (ktr->ktr_code == SYS_kldunloadf) {
 957                                 print_number(ip,narg,c);
 958                                 (void)putchar(',');
 959                                 kldunloadfflagsname ((int)*ip);
 960                                 ip++;
 961                                 narg--;
 962                         } else if (ktr->ktr_code == SYS_posix_fadvise) {
 963                                 print_number(ip,narg,c);
 964                                 print_number(ip,narg,c);
 965                                 print_number(ip,narg,c);
 966                                 (void)putchar(',');
 967                                 fadvisebehavname((int)*ip);
 968                                 ip++;
 969                                 narg--;
 970                         }
 971                 }
 972                 while (narg > 0) {
 973                         print_number(ip,narg,c);
 974                 }
 975                 (void)putchar(')');
 976         }
 977         (void)putchar('\n');
 978 }
 979
 980 void
 981 ktrsysret(struct ktr_sysret *ktr, u_int flags)
 982 {
 983         register_t ret = ktr->ktr_retval;
 984         int error = ktr->ktr_error;
 985         int code = ktr->ktr_code;
 986
 987         if ((flags != 0 && ((flags & SV_ABI_MASK) != SV_ABI_FREEBSD)) ||
 988             (code >= nsyscalls || code < 0))
 989                 (void)printf("[%d] ", code);
 990         else
 991                 (void)printf("%s ", syscallnames[code]);
 992
 993         if (error == 0) {
 994                 if (fancy) {
 995                         (void)printf("%ld", (long)ret);
 996                         if (ret < 0 || ret > 9)
 997                                 (void)printf("/%#lx", (long)ret);
 998                 } else {
 999                         if (decimal)
1000                                 (void)printf("%ld", (long)ret);
1001                         else
1002                                 (void)printf("%#lx", (long)ret);
1003                 }
1004         } else if (error == ERESTART)
1005                 (void)printf("RESTART");
1006         else if (error == EJUSTRETURN)
1007                 (void)printf("JUSTRETURN");
1008         else {
1009                 (void)printf("-1 errno %d", ktr->ktr_error);
1010                 if (fancy)
1011                         (void)printf(" %s", strerror(ktr->ktr_error));
1012         }
1013         (void)putchar('\n');
1014 }
1015
1016 void
1017 ktrnamei(char *cp, int len)
1018 {
1019         (void)printf("\"%.*s\"\n", len, cp);
1020 }
1021
1022 void
1023 hexdump(char *p, int len, int screenwidth)
1024 {
1025         int n, i;
1026         int width;
1027
1028         width = 0;
1029         do {
1030                 width += 2;
1031                 i = 13;                 /* base offset */
1032                 i += (width / 2) + 1;   /* spaces every second byte */
1033                 i += (width * 2);       /* width of bytes */
1034                 i += 3;                 /* "  |" */
1035                 i += width;             /* each byte */
1036                 i += 1;                 /* "|" */
1037         } while (i < screenwidth);
1038         width -= 2;
1039
1040         for (n = 0; n < len; n += width) {
1041                 for (i = n; i < n + width; i++) {
1042                         if ((i % width) == 0) { /* beginning of line */
1043                                 printf("       0x%04x", i);
1044                         }
1045                         if ((i % 2) == 0) {
1046                                 printf(" ");
1047                         }
1048                         if (i < len)
1049                                 printf("%02x", p[i] & 0xff);
1050                         else
1051                                 printf("  ");
1052                 }
1053                 printf("  |");
1054                 for (i = n; i < n + width; i++) {
1055                         if (i >= len)
1056                                 break;
1057                         if (p[i] >= ' ' && p[i] <= '~')
1058                                 printf("%c", p[i]);
1059                         else
1060                                 printf(".");
1061                 }
1062                 printf("|\n");
1063         }
1064         if ((i % width) != 0)
1065                 printf("\n");
1066 }
1067
1068 void
1069 visdump(char *dp, int datalen, int screenwidth)
1070 {
1071         int col = 0;
1072         char *cp;
1073         int width;
1074         char visbuf[5];
1075
1076         (void)printf("       \"");
1077         col = 8;
1078         for (;datalen > 0; datalen--, dp++) {
1079                 (void) vis(visbuf, *dp, VIS_CSTYLE, *(dp+1));
1080                 cp = visbuf;
1081                 /*
1082                  * Keep track of printables and
1083                  * space chars (like fold(1)).
1084                  */
1085                 if (col == 0) {
1086                         (void)putchar('\t');
1087                         col = 8;
1088                 }
1089                 switch(*cp) {
1090                 case '\n':
1091                         col = 0;
1092                         (void)putchar('\n');
1093                         continue;
1094                 case '\t':
1095                         width = 8 - (col&07);
1096                         break;
1097                 default:
1098                         width = strlen(cp);
1099                 }
1100                 if (col + width > (screenwidth-2)) {
1101                         (void)printf("\\\n\t");
1102                         col = 8;
1103                 }
1104                 col += width;
1105                 do {
1106                         (void)putchar(*cp++);
1107                 } while (*cp);
1108         }
1109         if (col == 0)
1110                 (void)printf("       ");
1111         (void)printf("\"\n");
1112 }
1113
1114 void
1115 ktrgenio(struct ktr_genio *ktr, int len)
1116 {
1117         int datalen = len - sizeof (struct ktr_genio);
1118         char *dp = (char *)ktr + sizeof (struct ktr_genio);
1119         static int screenwidth = 0;
1120         int i, binary;
1121
1122         if (screenwidth == 0) {
1123                 struct winsize ws;
1124
1125                 if (fancy && ioctl(fileno(stderr), TIOCGWINSZ, &ws) != -1 &&
1126                     ws.ws_col > 8)
1127                         screenwidth = ws.ws_col;
1128                 else
1129                         screenwidth = 80;
1130         }
1131         printf("fd %d %s %d byte%s\n", ktr->ktr_fd,
1132                 ktr->ktr_rw == UIO_READ ? "read" : "wrote", datalen,
1133                 datalen == 1 ? "" : "s");
1134         if (suppressdata)
1135                 return;
1136         if (maxdata && datalen > maxdata)
1137                 datalen = maxdata;
1138
1139         for (i = 0, binary = 0; i < datalen && binary == 0; i++)  {
1140                 if (dp[i] >= 32 && dp[i] < 127)
1141                         continue;
1142                 if (dp[i] == 10 || dp[i] == 13 || dp[i] == 0 || dp[i] == 9)
1143                         continue;
1144                 binary = 1;
1145         }
1146         if (binary)
1147                 hexdump(dp, datalen, screenwidth);
1148         else
1149                 visdump(dp, datalen, screenwidth);
1150 }
1151
1152 const char *signames[] = {
1153         "NULL", "HUP", "INT", "QUIT", "ILL", "TRAP", "IOT",     /*  1 - 6  */
1154         "EMT", "FPE", "KILL", "BUS", "SEGV", "SYS",             /*  7 - 12 */
1155         "PIPE", "ALRM",  "TERM", "URG", "STOP", "TSTP",         /* 13 - 18 */
1156         "CONT", "CHLD", "TTIN", "TTOU", "IO", "XCPU",           /* 19 - 24 */
1157         "XFSZ", "VTALRM", "PROF", "WINCH", "29", "USR1",        /* 25 - 30 */
1158         "USR2", NULL,                                           /* 31 - 32 */
1159 };
1160
1161 void
1162 ktrpsig(struct ktr_psig *psig)
1163 {
1164         if (psig->signo > 0 && psig->signo < NSIG)
1165                 (void)printf("SIG%s ", signames[psig->signo]);
1166         else
1167                 (void)printf("SIG %d ", psig->signo);
1168         if (psig->action == SIG_DFL)
1169                 (void)printf("SIG_DFL code=0x%x\n", psig->code);
1170         else {
1171                 (void)printf("caught handler=0x%lx mask=0x%x code=0x%x\n",
1172                     (u_long)psig->action, psig->mask.__bits[0], psig->code);
1173         }
1174 }
1175
1176 void
1177 ktrcsw_old(struct ktr_csw_old *cs)
1178 {
1179         (void)printf("%s %s\n", cs->out ? "stop" : "resume",
1180                 cs->user ? "user" : "kernel");
1181 }
1182
1183 void
1184 ktrcsw(struct ktr_csw *cs)
1185 {
1186         printf("%s %s \"%s\"\n", cs->out ? "stop" : "resume",
1187             cs->user ? "user" : "kernel", cs->wmesg);
1188 }
1189
1190 #define UTRACE_DLOPEN_START             1
1191 #define UTRACE_DLOPEN_STOP              2
1192 #define UTRACE_DLCLOSE_START            3
1193 #define UTRACE_DLCLOSE_STOP             4
1194 #define UTRACE_LOAD_OBJECT              5
1195 #define UTRACE_UNLOAD_OBJECT            6
1196 #define UTRACE_ADD_RUNDEP               7
1197 #define UTRACE_PRELOAD_FINISHED         8
1198 #define UTRACE_INIT_CALL                9
1199 #define UTRACE_FINI_CALL                10
1200
1201 struct utrace_rtld {
1202         char sig[4];                            /* 'RTLD' */
1203         int event;
1204         void *handle;
1205         void *mapbase;
1206         size_t mapsize;
1207         int refcnt;
1208         char name[MAXPATHLEN];
1209 };
1210
1211 void
1212 ktruser_rtld(int len, unsigned char *p)
1213 {
1214         struct utrace_rtld *ut = (struct utrace_rtld *)p;
1215         void *parent;
1216         int mode;
1217
1218         switch (ut->event) {
1219         case UTRACE_DLOPEN_START:
1220                 mode = ut->refcnt;
1221                 printf("dlopen(%s, ", ut->name);
1222                 switch (mode & RTLD_MODEMASK) {
1223                 case RTLD_NOW:
1224                         printf("RTLD_NOW");
1225                         break;
1226                 case RTLD_LAZY:
1227                         printf("RTLD_LAZY");
1228                         break;
1229                 default:
1230                         printf("%#x", mode & RTLD_MODEMASK);
1231                 }
1232                 if (mode & RTLD_GLOBAL)
1233                         printf(" | RTLD_GLOBAL");
1234                 if (mode & RTLD_TRACE)
1235                         printf(" | RTLD_TRACE");
1236                 if (mode & ~(RTLD_MODEMASK | RTLD_GLOBAL | RTLD_TRACE))
1237                         printf(" | %#x", mode &
1238                             ~(RTLD_MODEMASK | RTLD_GLOBAL | RTLD_TRACE));
1239                 printf(")\n");
1240                 break;
1241         case UTRACE_DLOPEN_STOP:
1242                 printf("%p = dlopen(%s) ref %d\n", ut->handle, ut->name,
1243                     ut->refcnt);
1244                 break;
1245         case UTRACE_DLCLOSE_START:
1246                 printf("dlclose(%p) (%s, %d)\n", ut->handle, ut->name,
1247                     ut->refcnt);
1248                 break;
1249         case UTRACE_DLCLOSE_STOP:
1250                 printf("dlclose(%p) finished\n", ut->handle);
1251                 break;
1252         case UTRACE_LOAD_OBJECT:
1253                 printf("RTLD: loaded   %p @ %p - %p (%s)\n", ut->handle,
1254                     ut->mapbase, (char *)ut->mapbase + ut->mapsize - 1,
1255                     ut->name);
1256                 break;
1257         case UTRACE_UNLOAD_OBJECT:
1258                 printf("RTLD: unloaded %p @ %p - %p (%s)\n", ut->handle,
1259                     ut->mapbase, (char *)ut->mapbase + ut->mapsize - 1,
1260                     ut->name);
1261                 break;
1262         case UTRACE_ADD_RUNDEP:
1263                 parent = ut->mapbase;
1264                 printf("RTLD: %p now depends on %p (%s, %d)\n", parent,
1265                     ut->handle, ut->name, ut->refcnt);
1266                 break;
1267         case UTRACE_PRELOAD_FINISHED:
1268                 printf("RTLD: LD_PRELOAD finished\n");
1269                 break;
1270         case UTRACE_INIT_CALL:
1271                 printf("RTLD: init %p for %p (%s)\n", ut->mapbase, ut->handle,
1272                     ut->name);
1273                 break;
1274         case UTRACE_FINI_CALL:
1275                 printf("RTLD: fini %p for %p (%s)\n", ut->mapbase, ut->handle,
1276                     ut->name);
1277                 break;
1278         default:
1279                 p += 4;
1280                 len -= 4;
1281                 printf("RTLD: %d ", len);
1282                 while (len--)
1283                         if (decimal)
1284                                 printf(" %d", *p++);
1285                         else
1286                                 printf(" %02x", *p++);
1287                 printf("\n");
1288         }
1289 }
1290
1291 struct utrace_malloc {
1292         void *p;
1293         size_t s;
1294         void *r;
1295 };
1296
1297 void
1298 ktruser_malloc(int len, unsigned char *p)
1299 {
1300         struct utrace_malloc *ut = (struct utrace_malloc *)p;
1301
1302         if (ut->p == NULL) {
1303                 if (ut->s == 0 && ut->r == NULL)
1304                         printf("malloc_init()\n");
1305                 else
1306                         printf("%p = malloc(%zu)\n", ut->r, ut->s);
1307         } else {
1308                 if (ut->s == 0)
1309                         printf("free(%p)\n", ut->p);
1310                 else
1311                         printf("%p = realloc(%p, %zu)\n", ut->r, ut->p, ut->s);
1312         }
1313 }
1314
1315 void
1316 ktruser(int len, unsigned char *p)
1317 {
1318
1319         if (len >= 8 && bcmp(p, "RTLD", 4) == 0) {
1320                 ktruser_rtld(len, p);
1321                 return;
1322         }
1323
1324         if (len == sizeof(struct utrace_malloc)) {
1325                 ktruser_malloc(len, p);
1326                 return;
1327         }
1328
1329         (void)printf("%d ", len);
1330         while (len--)
1331                 if (decimal)
1332                         (void)printf(" %d", *p++);
1333                 else
1334                         (void)printf(" %02x", *p++);
1335         (void)printf("\n");
1336 }
1337
1338 void
1339 ktrsockaddr(struct sockaddr *sa)
1340 {
1341 /*
1342  TODO: Support additional address families
1343         #include <netnatm/natm.h>
1344         struct sockaddr_natm    *natm;
1345         #include <netsmb/netbios.h>
1346         struct sockaddr_nb      *nb;
1347 */
1348         char addr[64];
1349
1350         /*
1351          * note: ktrstruct() has already verified that sa points to a
1352          * buffer at least sizeof(struct sockaddr) bytes long and exactly
1353          * sa->sa_len bytes long.
1354          */
1355         printf("struct sockaddr { ");
1356         sockfamilyname(sa->sa_family);
1357         printf(", ");
1358
1359 #define check_sockaddr_len(n)                                   \
1360         if (sa_##n->s##n##_len < sizeof(struct sockaddr_##n)) { \
1361                 printf("invalid");                              \
1362                 break;                                          \
1363         }
1364
1365         switch(sa->sa_family) {
1366         case AF_INET: {
1367                 struct sockaddr_in      *sa_in;
1368
1369                 sa_in = (struct sockaddr_in *)sa;
1370                 check_sockaddr_len(in);
1371                 inet_ntop(AF_INET, &sa_in->sin_addr, addr, sizeof addr);
1372                 printf("%s:%u", addr, ntohs(sa_in->sin_port));
1373                 break;
1374         }
1375 #ifdef NETATALK
1376         case AF_APPLETALK: {
1377                 struct sockaddr_at      *sa_at;
1378                 struct netrange         *nr;
1379
1380                 sa_at = (struct sockaddr_at *)sa;
1381                 check_sockaddr_len(at);
1382                 nr = &sa_at->sat_range.r_netrange;
1383                 printf("%d.%d, %d-%d, %d", ntohs(sa_at->sat_addr.s_net),
1384                         sa_at->sat_addr.s_node, ntohs(nr->nr_firstnet),
1385                         ntohs(nr->nr_lastnet), nr->nr_phase);
1386                 break;
1387         }
1388 #endif
1389         case AF_INET6: {
1390                 struct sockaddr_in6     *sa_in6;
1391
1392                 sa_in6 = (struct sockaddr_in6 *)sa;
1393                 check_sockaddr_len(in6);
1394                 inet_ntop(AF_INET6, &sa_in6->sin6_addr, addr, sizeof addr);
1395                 printf("[%s]:%u", addr, htons(sa_in6->sin6_port));
1396                 break;
1397         }
1398 #ifdef IPX
1399         case AF_IPX: {
1400                 struct sockaddr_ipx     *sa_ipx;
1401
1402                 sa_ipx = (struct sockaddr_ipx *)sa;
1403                 check_sockaddr_len(ipx);
1404                 /* XXX wish we had ipx_ntop */
1405                 printf("%s", ipx_ntoa(sa_ipx->sipx_addr));
1406                 break;
1407         }
1408 #endif
1409         case AF_UNIX: {
1410                 struct sockaddr_un *sa_un;
1411
1412                 sa_un = (struct sockaddr_un *)sa;
1413                 check_sockaddr_len(un);
1414                 printf("%.*s", (int)sizeof(sa_un->sun_path), sa_un->sun_path);
1415                 break;
1416         }
1417         default:
1418                 printf("unknown address family");
1419         }
1420         printf(" }\n");
1421 }
1422
1423 void
1424 ktrstat(struct stat *statp)
1425 {
1426         char mode[12], timestr[PATH_MAX + 4];
1427         struct passwd *pwd;
1428         struct group  *grp;
1429         struct tm *tm;
1430
1431         /*
1432          * note: ktrstruct() has already verified that statp points to a
1433          * buffer exactly sizeof(struct stat) bytes long.
1434          */
1435         printf("struct stat {");
1436         strmode(statp->st_mode, mode);
1437         printf("dev=%ju, ino=%ju, mode=%s, nlink=%ju, ",
1438                 (uintmax_t)statp->st_dev, (uintmax_t)statp->st_ino, mode,
1439                 (uintmax_t)statp->st_nlink);
1440         if (resolv == 0 || (pwd = getpwuid(statp->st_uid)) == NULL)
1441                 printf("uid=%ju, ", (uintmax_t)statp->st_uid);
1442         else
1443                 printf("uid=\"%s\", ", pwd->pw_name);
1444         if (resolv == 0 || (grp = getgrgid(statp->st_gid)) == NULL)
1445                 printf("gid=%ju, ", (uintmax_t)statp->st_gid);
1446         else
1447                 printf("gid=\"%s\", ", grp->gr_name);
1448         printf("rdev=%ju, ", (uintmax_t)statp->st_rdev);
1449         printf("atime=");
1450         if (resolv == 0)
1451                 printf("%jd", (intmax_t)statp->st_atimespec.tv_sec);
1452         else {
1453                 tm = localtime(&statp->st_atimespec.tv_sec);
1454                 (void)strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1455                 printf("\"%s\"", timestr);
1456         }
1457         if (statp->st_atimespec.tv_nsec != 0)
1458                 printf(".%09ld, ", statp->st_atimespec.tv_nsec);
1459         else
1460                 printf(", ");
1461         printf("stime=");
1462         if (resolv == 0)
1463                 printf("%jd", (intmax_t)statp->st_mtimespec.tv_sec);
1464         else {
1465                 tm = localtime(&statp->st_mtimespec.tv_sec);
1466                 (void)strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1467                 printf("\"%s\"", timestr);
1468         }
1469         if (statp->st_mtimespec.tv_nsec != 0)
1470                 printf(".%09ld, ", statp->st_mtimespec.tv_nsec);
1471         else
1472                 printf(", ");
1473         printf("ctime=");
1474         if (resolv == 0)
1475                 printf("%jd", (intmax_t)statp->st_ctimespec.tv_sec);
1476         else {
1477                 tm = localtime(&statp->st_ctimespec.tv_sec);
1478                 (void)strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1479                 printf("\"%s\"", timestr);
1480         }
1481         if (statp->st_ctimespec.tv_nsec != 0)
1482                 printf(".%09ld, ", statp->st_ctimespec.tv_nsec);
1483         else
1484                 printf(", ");
1485         printf("birthtime=");
1486         if (resolv == 0)
1487                 printf("%jd", (intmax_t)statp->st_birthtimespec.tv_sec);
1488         else {
1489                 tm = localtime(&statp->st_birthtimespec.tv_sec);
1490                 (void)strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1491                 printf("\"%s\"", timestr);
1492         }
1493         if (statp->st_birthtimespec.tv_nsec != 0)
1494                 printf(".%09ld, ", statp->st_birthtimespec.tv_nsec);
1495         else
1496                 printf(", ");
1497         printf("size=%jd, blksize=%ju, blocks=%jd, flags=0x%x",
1498                 (uintmax_t)statp->st_size, (uintmax_t)statp->st_blksize,
1499                 (intmax_t)statp->st_blocks, statp->st_flags);
1500         printf(" }\n");
1501 }
1502
1503 void
1504 ktrstruct(char *buf, size_t buflen)
1505 {
1506         char *name, *data;
1507         size_t namelen, datalen;
1508         int i;
1509
1510         for (name = buf, namelen = 0;
1511              namelen < buflen && name[namelen] != '\0';
1512              ++namelen)
1513                 /* nothing */;
1514         if (namelen == buflen)
1515                 goto invalid;
1516         if (name[namelen] != '\0')
1517                 goto invalid;
1518         data = buf + namelen + 1;
1519         datalen = buflen - namelen - 1;
1520         if (datalen == 0)
1521                 goto invalid;
1522         /* sanity check */
1523         for (i = 0; i < namelen; ++i)
1524                 if (!isalpha((unsigned char)name[i]))
1525                         goto invalid;
1526         if (strcmp(name, "stat") == 0) {
1527                 if (datalen != sizeof(struct stat))
1528                         goto invalid;
1529                 ktrstat((struct stat *)data);
1530         } else if (strcmp(name, "sockaddr") == 0) {
1531                 if (datalen < sizeof(struct sockaddr) ||
1532                     datalen != ((struct sockaddr *)(data))->sa_len)
1533                         goto invalid;
1534                 ktrsockaddr((struct sockaddr *)data);
1535         } else {
1536                 printf("unknown structure\n");
1537         }
1538         return;
1539 invalid:
1540         printf("invalid record\n");
1541 }
1542
1543 void
1544 ktrfault(struct ktr_fault *ktr)
1545 {
1546
1547         printf("0x%jx ", ktr->vaddr);
1548         vmprotname(ktr->type);
1549         printf("\n");
1550 }
1551
1552 void
1553 ktrfaultend(struct ktr_faultend *ktr)
1554 {
1555
1556         vmresultname(ktr->result);
1557         printf("\n");
1558 }
1559
1560 #if defined(__amd64__) || defined(__i386__)
1561 void
1562 linux_ktrsyscall(struct ktr_syscall *ktr)
1563 {
1564         int narg = ktr->ktr_narg;
1565         register_t *ip;
1566
1567         if (ktr->ktr_code >= nlinux_syscalls || ktr->ktr_code < 0)
1568                 printf("[%d]", ktr->ktr_code);
1569         else
1570                 printf("%s", linux_syscallnames[ktr->ktr_code]);
1571         ip = &ktr->ktr_args[0];
1572         if (narg) {
1573                 char c = '(';
1574                 while (narg > 0)
1575                         print_number(ip, narg, c);
1576                 putchar(')');
1577         }
1578         putchar('\n');
1579 }
1580
1581 void
1582 linux_ktrsysret(struct ktr_sysret *ktr)
1583 {
1584         register_t ret = ktr->ktr_retval;
1585         int error = ktr->ktr_error;
1586         int code = ktr->ktr_code;
1587
1588         if (code >= nlinux_syscalls || code < 0)
1589                 printf("[%d] ", code);
1590         else
1591                 printf("%s ", linux_syscallnames[code]);
1592
1593         if (error == 0) {
1594                 if (fancy) {
1595                         printf("%ld", (long)ret);
1596                         if (ret < 0 || ret > 9)
1597                                 printf("/%#lx", (long)ret);
1598                 } else {
1599                         if (decimal)
1600                                 printf("%ld", (long)ret);
1601                         else
1602                                 printf("%#lx", (long)ret);
1603                 }
1604         } else if (error == ERESTART)
1605                 printf("RESTART");
1606         else if (error == EJUSTRETURN)
1607                 printf("JUSTRETURN");
1608         else {
1609                 if (ktr->ktr_error <= ELAST + 1)
1610                         error = abs(bsd_to_linux_errno[ktr->ktr_error]);
1611                 else
1612                         error = 999;
1613                 printf("-1 errno %d", error);
1614                 if (fancy)
1615                         printf(" %s", strerror(ktr->ktr_error));
1616         }
1617         putchar('\n');
1618 }
1619 #endif
1620
1621 void
1622 usage(void)
1623 {
1624         fprintf(stderr, "usage: kdump [-dEnlHRrsTA] [-f trfile] "
1625             "[-m maxdata] [-p pid] [-t trstr]\n");
1626         exit(1);
1627 }