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