usr.bin/kdump/kdump.c

   1 /*-
   2  * Copyright (c) 1988, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 4. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29
  30 #ifndef lint
  31 static const char copyright[] =
  32 "@(#) Copyright (c) 1988, 1993\n\
  33         The Regents of the University of California.  All rights reserved.\n";
  34 #endif /* not lint */
  35
  36 #ifndef lint
  37 #if 0
  38 static char sccsid[] = "@(#)kdump.c     8.1 (Berkeley) 6/6/93";
  39 #endif
  40 #endif /* not lint */
  41 #include <sys/cdefs.h>
  42 __FBSDID("$FreeBSD$");
  43
  44 #define _KERNEL
  45 extern int errno;
  46 #include <sys/errno.h>
  47 #undef _KERNEL
  48 #include <sys/param.h>
  49 #include <sys/capsicum.h>
  50 #include <sys/errno.h>
  51 #define _KERNEL
  52 #include <sys/time.h>
  53 #undef _KERNEL
  54 #include <sys/uio.h>
  55 #include <sys/ktrace.h>
  56 #include <sys/ioctl.h>
  57 #include <sys/socket.h>
  58 #include <sys/stat.h>
  59 #include <sys/sysent.h>
  60 #include <sys/umtx.h>
  61 #include <sys/un.h>
  62 #include <sys/queue.h>
  63 #include <sys/wait.h>
  64 #include <arpa/inet.h>
  65 #include <netinet/in.h>
  66 #include <ctype.h>
  67 #include <dlfcn.h>
  68 #include <err.h>
  69 #include <grp.h>
  70 #include <inttypes.h>
  71 #ifdef HAVE_LIBCAPSICUM
  72 #include <libcapsicum.h>
  73 #include <libcapsicum_grp.h>
  74 #include <libcapsicum_pwd.h>
  75 #include <libcapsicum_service.h>
  76 #endif
  77 #include <locale.h>
  78 #include <netdb.h>
  79 #include <nl_types.h>
  80 #ifdef HAVE_LIBCAPSICUM
  81 #include <nv.h>
  82 #endif
  83 #include <pwd.h>
  84 #include <stdio.h>
  85 #include <stdlib.h>
  86 #include <string.h>
  87 #include <termios.h>
  88 #include <time.h>
  89 #include <unistd.h>
  90 #include <vis.h>
  91 #include "ktrace.h"
  92 #include "kdump_subr.h"
  93
  94 u_int abidump(struct ktr_header *);
  95 int fetchprocinfo(struct ktr_header *, u_int *);
  96 int fread_tail(void *, int, int);
  97 void dumpheader(struct ktr_header *);
  98 void ktrsyscall(struct ktr_syscall *, u_int);
  99 void ktrsysret(struct ktr_sysret *, u_int);
 100 void ktrnamei(char *, int);
 101 void hexdump(char *, int, int);
 102 void visdump(char *, int, int);
 103 void ktrgenio(struct ktr_genio *, int);
 104 void ktrpsig(struct ktr_psig *);
 105 void ktrcsw(struct ktr_csw *);
 106 void ktrcsw_old(struct ktr_csw_old *);
 107 void ktruser_malloc(void *);
 108 void ktruser_rtld(int, void *);
 109 void ktruser(int, void *);
 110 void ktrcaprights(cap_rights_t *);
 111 void ktrsockaddr(struct sockaddr *);
 112 void ktrstat(struct stat *);
 113 void ktrstruct(char *, size_t);
 114 void ktrcapfail(struct ktr_cap_fail *);
 115 void ktrfault(struct ktr_fault *);
 116 void ktrfaultend(struct ktr_faultend *);
 117 void limitfd(int fd);
 118 void usage(void);
 119 void ioctlname(unsigned long, int);
 120
 121 #define TIMESTAMP_NONE          0x0
 122 #define TIMESTAMP_ABSOLUTE      0x1
 123 #define TIMESTAMP_ELAPSED       0x2
 124 #define TIMESTAMP_RELATIVE      0x4
 125
 126 extern const char *signames[], *syscallnames[];
 127 extern int nsyscalls;
 128
 129 static int timestamp, decimal, fancy = 1, suppressdata, tail, threads, maxdata,
 130     resolv = 0, abiflag = 0, syscallno = 0;
 131 static const char *tracefile = DEF_TRACEFILE;
 132 static struct ktr_header ktr_header;
 133
 134 #define TIME_FORMAT     "%b %e %T %Y"
 135 #define eqs(s1, s2)     (strcmp((s1), (s2)) == 0)
 136
 137 #define print_number(i,n,c) do {                                        \
 138         if (decimal)                                                    \
 139                 printf("%c%jd", c, (intmax_t)*i);                       \
 140         else                                                            \
 141                 printf("%c%#jx", c, (uintmax_t)(u_register_t)*i);       \
 142         i++;                                                            \
 143         n--;                                                            \
 144         c = ',';                                                        \
 145 } while (0)
 146
 147 #if defined(__amd64__) || defined(__i386__)
 148
 149 void linux_ktrsyscall(struct ktr_syscall *);
 150 void linux_ktrsysret(struct ktr_sysret *);
 151 extern const char *linux_syscallnames[];
 152
 153 #include <linux_syscalls.c>
 154 static int nlinux_syscalls = sizeof(linux_syscallnames) / \
 155                                 sizeof(linux_syscallnames[0]);
 156
 157 /*
 158  * from linux.h
 159  * Linux syscalls return negative errno's, we do positive and map them
 160  */
 161 static int bsd_to_linux_errno[ELAST + 1] = {
 162         -0,  -1,  -2,  -3,  -4,  -5,  -6,  -7,  -8,  -9,
 163         -10, -35, -12, -13, -14, -15, -16, -17, -18, -19,
 164         -20, -21, -22, -23, -24, -25, -26, -27, -28, -29,
 165         -30, -31, -32, -33, -34, -11,-115,-114, -88, -89,
 166         -90, -91, -92, -93, -94, -95, -96, -97, -98, -99,
 167         -100,-101,-102,-103,-104,-105,-106,-107,-108,-109,
 168         -110,-111, -40, -36,-112,-113, -39, -11, -87,-122,
 169         -116, -66,  -6,  -6,  -6,  -6,  -6, -37, -38,  -9,
 170         -6,  -6, -43, -42, -75,-125, -84, -95, -16, -74,
 171         -72, -67, -71
 172 };
 173 #endif
 174
 175 struct proc_info
 176 {
 177         TAILQ_ENTRY(proc_info)  info;
 178         u_int                   sv_flags;
 179         pid_t                   pid;
 180 };
 181
 182 static TAILQ_HEAD(trace_procs, proc_info) trace_procs;
 183
 184 #ifdef HAVE_LIBCAPSICUM
 185 static cap_channel_t *cappwd, *capgrp;
 186 #endif
 187
 188 static void
 189 strerror_init(void)
 190 {
 191
 192         /*
 193          * Cache NLS data before entering capability mode.
 194          * XXXPJD: There should be strerror_init() and strsignal_init() in libc.
 195          */
 196         (void)catopen("libc", NL_CAT_LOCALE);
 197 }
 198
 199 static void
 200 localtime_init(void)
 201 {
 202         time_t ltime;
 203
 204         /*
 205          * Allow localtime(3) to cache /etc/localtime content before entering
 206          * capability mode.
 207          * XXXPJD: There should be localtime_init() in libc.
 208          */
 209         (void)time(&ltime);
 210         (void)localtime(&ltime);
 211 }
 212
 213 #ifdef HAVE_LIBCAPSICUM
 214 static int
 215 cappwdgrp_setup(cap_channel_t **cappwdp, cap_channel_t **capgrpp)
 216 {
 217         cap_channel_t *capcas, *cappwdloc, *capgrploc;
 218         const char *cmds[1], *fields[1];
 219
 220         capcas = cap_init();
 221         if (capcas == NULL) {
 222                 warn("unable to contact casperd");
 223                 return (-1);
 224         }
 225         cappwdloc = cap_service_open(capcas, "system.pwd");
 226         capgrploc = cap_service_open(capcas, "system.grp");
 227         /* Casper capability no longer needed. */
 228         cap_close(capcas);
 229         if (cappwdloc == NULL || capgrploc == NULL) {
 230                 if (cappwdloc == NULL)
 231                         warn("unable to open system.pwd service");
 232                 if (capgrploc == NULL)
 233                         warn("unable to open system.grp service");
 234                 exit(1);
 235         }
 236         /* Limit system.pwd to only getpwuid() function and pw_name field. */
 237         cmds[0] = "getpwuid";
 238         if (cap_pwd_limit_cmds(cappwdloc, cmds, 1) < 0)
 239                 err(1, "unable to limit system.pwd service");
 240         fields[0] = "pw_name";
 241         if (cap_pwd_limit_fields(cappwdloc, fields, 1) < 0)
 242                 err(1, "unable to limit system.pwd service");
 243         /* Limit system.grp to only getgrgid() function and gr_name field. */
 244         cmds[0] = "getgrgid";
 245         if (cap_grp_limit_cmds(capgrploc, cmds, 1) < 0)
 246                 err(1, "unable to limit system.grp service");
 247         fields[0] = "gr_name";
 248         if (cap_grp_limit_fields(capgrploc, fields, 1) < 0)
 249                 err(1, "unable to limit system.grp service");
 250
 251         *cappwdp = cappwdloc;
 252         *capgrpp = capgrploc;
 253         return (0);
 254 }
 255 #endif  /* HAVE_LIBCAPSICUM */
 256
 257 int
 258 main(int argc, char *argv[])
 259 {
 260         int ch, ktrlen, size;
 261         void *m;
 262         int trpoints = ALL_POINTS;
 263         int drop_logged;
 264         pid_t pid = 0;
 265         u_int sv_flags;
 266
 267         setlocale(LC_CTYPE, "");
 268
 269         timestamp = TIMESTAMP_NONE;
 270
 271         while ((ch = getopt(argc,argv,"f:dElm:np:AHRrSsTt:")) != -1)
 272                 switch (ch) {
 273                 case 'A':
 274                         abiflag = 1;
 275                         break;
 276                 case 'f':
 277                         tracefile = optarg;
 278                         break;
 279                 case 'd':
 280                         decimal = 1;
 281                         break;
 282                 case 'l':
 283                         tail = 1;
 284                         break;
 285                 case 'm':
 286                         maxdata = atoi(optarg);
 287                         break;
 288                 case 'n':
 289                         fancy = 0;
 290                         break;
 291                 case 'p':
 292                         pid = atoi(optarg);
 293                         break;
 294                 case 'r':
 295                         resolv = 1;
 296                         break;
 297                 case 'S':
 298                         syscallno = 1;
 299                         break;
 300                 case 's':
 301                         suppressdata = 1;
 302                         break;
 303                 case 'E':
 304                         timestamp |= TIMESTAMP_ELAPSED;
 305                         break;
 306                 case 'H':
 307                         threads = 1;
 308                         break;
 309                 case 'R':
 310                         timestamp |= TIMESTAMP_RELATIVE;
 311                         break;
 312                 case 'T':
 313                         timestamp |= TIMESTAMP_ABSOLUTE;
 314                         break;
 315                 case 't':
 316                         trpoints = getpoints(optarg);
 317                         if (trpoints < 0)
 318                                 errx(1, "unknown trace point in %s", optarg);
 319                         break;
 320                 default:
 321                         usage();
 322                 }
 323
 324         if (argc > optind)
 325                 usage();
 326
 327         m = malloc(size = 1025);
 328         if (m == NULL)
 329                 errx(1, "%s", strerror(ENOMEM));
 330         if (!freopen(tracefile, "r", stdin))
 331                 err(1, "%s", tracefile);
 332
 333         strerror_init();
 334         localtime_init();
 335 #ifdef HAVE_LIBCAPSICUM
 336         if (resolv != 0) {
 337                 if (cappwdgrp_setup(&cappwd, &capgrp) < 0) {
 338                         cappwd = NULL;
 339                         capgrp = NULL;
 340                 }
 341         }
 342         if (resolv == 0 || (cappwd != NULL && capgrp != NULL)) {
 343                 if (cap_enter() < 0 && errno != ENOSYS)
 344                         err(1, "unable to enter capability mode");
 345         }
 346 #else
 347         if (resolv == 0) {
 348                 if (cap_enter() < 0 && errno != ENOSYS)
 349                         err(1, "unable to enter capability mode");
 350         }
 351 #endif
 352         limitfd(STDIN_FILENO);
 353         limitfd(STDOUT_FILENO);
 354         limitfd(STDERR_FILENO);
 355         if (cap_sandboxed())
 356                 fprintf(stderr, "capability mode sandbox enabled\n");
 357
 358         TAILQ_INIT(&trace_procs);
 359         drop_logged = 0;
 360         while (fread_tail(&ktr_header, sizeof(struct ktr_header), 1)) {
 361                 if (ktr_header.ktr_type & KTR_DROP) {
 362                         ktr_header.ktr_type &= ~KTR_DROP;
 363                         if (!drop_logged && threads) {
 364                                 printf(
 365                                     "%6jd %6jd %-8.*s Events dropped.\n",
 366                                     (intmax_t)ktr_header.ktr_pid,
 367                                     ktr_header.ktr_tid > 0 ?
 368                                     (intmax_t)ktr_header.ktr_tid : 0,
 369                                     MAXCOMLEN, ktr_header.ktr_comm);
 370                                 drop_logged = 1;
 371                         } else if (!drop_logged) {
 372                                 printf("%6jd %-8.*s Events dropped.\n",
 373                                     (intmax_t)ktr_header.ktr_pid, MAXCOMLEN,
 374                                     ktr_header.ktr_comm);
 375                                 drop_logged = 1;
 376                         }
 377                 }
 378                 if (trpoints & (1<<ktr_header.ktr_type))
 379                         if (pid == 0 || ktr_header.ktr_pid == pid ||
 380                             ktr_header.ktr_tid == pid)
 381                                 dumpheader(&ktr_header);
 382                 if ((ktrlen = ktr_header.ktr_len) < 0)
 383                         errx(1, "bogus length 0x%x", ktrlen);
 384                 if (ktrlen > size) {
 385                         m = realloc(m, ktrlen+1);
 386                         if (m == NULL)
 387                                 errx(1, "%s", strerror(ENOMEM));
 388                         size = ktrlen;
 389                 }
 390                 if (ktrlen && fread_tail(m, ktrlen, 1) == 0)
 391                         errx(1, "data too short");
 392                 if (fetchprocinfo(&ktr_header, (u_int *)m) != 0)
 393                         continue;
 394                 sv_flags = abidump(&ktr_header);
 395                 if (pid && ktr_header.ktr_pid != pid &&
 396                     ktr_header.ktr_tid != pid)
 397                         continue;
 398                 if ((trpoints & (1<<ktr_header.ktr_type)) == 0)
 399                         continue;
 400                 drop_logged = 0;
 401                 switch (ktr_header.ktr_type) {
 402                 case KTR_SYSCALL:
 403 #if defined(__amd64__) || defined(__i386__)
 404                         if ((sv_flags & SV_ABI_MASK) == SV_ABI_LINUX)
 405                                 linux_ktrsyscall((struct ktr_syscall *)m);
 406                         else
 407 #endif
 408                                 ktrsyscall((struct ktr_syscall *)m, sv_flags);
 409                         break;
 410                 case KTR_SYSRET:
 411 #if defined(__amd64__) || defined(__i386__)
 412                         if ((sv_flags & SV_ABI_MASK) == SV_ABI_LINUX)
 413                                 linux_ktrsysret((struct ktr_sysret *)m);
 414                         else
 415 #endif
 416                                 ktrsysret((struct ktr_sysret *)m, sv_flags);
 417                         break;
 418                 case KTR_NAMEI:
 419                 case KTR_SYSCTL:
 420                         ktrnamei(m, ktrlen);
 421                         break;
 422                 case KTR_GENIO:
 423                         ktrgenio((struct ktr_genio *)m, ktrlen);
 424                         break;
 425                 case KTR_PSIG:
 426                         ktrpsig((struct ktr_psig *)m);
 427                         break;
 428                 case KTR_CSW:
 429                         if (ktrlen == sizeof(struct ktr_csw_old))
 430                                 ktrcsw_old((struct ktr_csw_old *)m);
 431                         else
 432                                 ktrcsw((struct ktr_csw *)m);
 433                         break;
 434                 case KTR_USER:
 435                         ktruser(ktrlen, m);
 436                         break;
 437                 case KTR_STRUCT:
 438                         ktrstruct(m, ktrlen);
 439                         break;
 440                 case KTR_CAPFAIL:
 441                         ktrcapfail((struct ktr_cap_fail *)m);
 442                         break;
 443                 case KTR_FAULT:
 444                         ktrfault((struct ktr_fault *)m);
 445                         break;
 446                 case KTR_FAULTEND:
 447                         ktrfaultend((struct ktr_faultend *)m);
 448                         break;
 449                 default:
 450                         printf("\n");
 451                         break;
 452                 }
 453                 if (tail)
 454                         fflush(stdout);
 455         }
 456         return 0;
 457 }
 458
 459 void
 460 limitfd(int fd)
 461 {
 462         cap_rights_t rights;
 463         unsigned long cmd;
 464
 465         cap_rights_init(&rights, CAP_FSTAT);
 466         cmd = 0;
 467
 468         switch (fd) {
 469         case STDIN_FILENO:
 470                 cap_rights_set(&rights, CAP_READ);
 471                 break;
 472         case STDOUT_FILENO:
 473                 cap_rights_set(&rights, CAP_IOCTL, CAP_WRITE);
 474                 cmd = TIOCGETA; /* required by isatty(3) in printf(3) */
 475                 break;
 476         case STDERR_FILENO:
 477                 cap_rights_set(&rights, CAP_WRITE);
 478                 if (!suppressdata) {
 479                         cap_rights_set(&rights, CAP_IOCTL);
 480                         cmd = TIOCGWINSZ;
 481                 }
 482                 break;
 483         default:
 484                 abort();
 485         }
 486
 487         if (cap_rights_limit(fd, &rights) < 0 && errno != ENOSYS)
 488                 err(1, "unable to limit rights for descriptor %d", fd);
 489         if (cmd != 0 && cap_ioctls_limit(fd, &cmd, 1) < 0 && errno != ENOSYS)
 490                 err(1, "unable to limit ioctls for descriptor %d", fd);
 491 }
 492
 493 int
 494 fread_tail(void *buf, int size, int num)
 495 {
 496         int i;
 497
 498         while ((i = fread(buf, size, num, stdin)) == 0 && tail) {
 499                 sleep(1);
 500                 clearerr(stdin);
 501         }
 502         return (i);
 503 }
 504
 505 int
 506 fetchprocinfo(struct ktr_header *kth, u_int *flags)
 507 {
 508         struct proc_info *pi;
 509
 510         switch (kth->ktr_type) {
 511         case KTR_PROCCTOR:
 512                 TAILQ_FOREACH(pi, &trace_procs, info) {
 513                         if (pi->pid == kth->ktr_pid) {
 514                                 TAILQ_REMOVE(&trace_procs, pi, info);
 515                                 break;
 516                         }
 517                 }
 518                 pi = malloc(sizeof(struct proc_info));
 519                 if (pi == NULL)
 520                         errx(1, "%s", strerror(ENOMEM));
 521                 pi->sv_flags = *flags;
 522                 pi->pid = kth->ktr_pid;
 523                 TAILQ_INSERT_TAIL(&trace_procs, pi, info);
 524                 return (1);
 525
 526         case KTR_PROCDTOR:
 527                 TAILQ_FOREACH(pi, &trace_procs, info) {
 528                         if (pi->pid == kth->ktr_pid) {
 529                                 TAILQ_REMOVE(&trace_procs, pi, info);
 530                                 free(pi);
 531                                 break;
 532                         }
 533                 }
 534                 return (1);
 535         }
 536
 537         return (0);
 538 }
 539
 540 u_int
 541 abidump(struct ktr_header *kth)
 542 {
 543         struct proc_info *pi;
 544         const char *abi;
 545         const char *arch;
 546         u_int flags = 0;
 547
 548         TAILQ_FOREACH(pi, &trace_procs, info) {
 549                 if (pi->pid == kth->ktr_pid) {
 550                         flags = pi->sv_flags;
 551                         break;
 552                 }
 553         }
 554
 555         if (abiflag == 0)
 556                 return (flags);
 557
 558         switch (flags & SV_ABI_MASK) {
 559         case SV_ABI_LINUX:
 560                 abi = "L";
 561                 break;
 562         case SV_ABI_FREEBSD:
 563                 abi = "F";
 564                 break;
 565         default:
 566                 abi = "U";
 567                 break;
 568         }
 569
 570         if (flags != 0) {
 571                 if (flags & SV_LP64)
 572                         arch = "64";
 573                 else
 574                         arch = "32";
 575         } else
 576                 arch = "00";
 577
 578         printf("%s%s  ", abi, arch);
 579
 580         return (flags);
 581 }
 582
 583 void
 584 dumpheader(struct ktr_header *kth)
 585 {
 586         static char unknown[64];
 587         static struct timeval prevtime, prevtime_e, temp;
 588         const char *type;
 589
 590         switch (kth->ktr_type) {
 591         case KTR_SYSCALL:
 592                 type = "CALL";
 593                 break;
 594         case KTR_SYSRET:
 595                 type = "RET ";
 596                 break;
 597         case KTR_NAMEI:
 598                 type = "NAMI";
 599                 break;
 600         case KTR_GENIO:
 601                 type = "GIO ";
 602                 break;
 603         case KTR_PSIG:
 604                 type = "PSIG";
 605                 break;
 606         case KTR_CSW:
 607                 type = "CSW ";
 608                 break;
 609         case KTR_USER:
 610                 type = "USER";
 611                 break;
 612         case KTR_STRUCT:
 613                 type = "STRU";
 614                 break;
 615         case KTR_SYSCTL:
 616                 type = "SCTL";
 617                 break;
 618         case KTR_PROCCTOR:
 619                 /* FALLTHROUGH */
 620         case KTR_PROCDTOR:
 621                 return;
 622         case KTR_CAPFAIL:
 623                 type = "CAP ";
 624                 break;
 625         case KTR_FAULT:
 626                 type = "PFLT";
 627                 break;
 628         case KTR_FAULTEND:
 629                 type = "PRET";
 630                 break;
 631         default:
 632                 sprintf(unknown, "UNKNOWN(%d)", kth->ktr_type);
 633                 type = unknown;
 634         }
 635
 636         /*
 637          * The ktr_tid field was previously the ktr_buffer field, which held
 638          * the kernel pointer value for the buffer associated with data
 639          * following the record header.  It now holds a threadid, but only
 640          * for trace files after the change.  Older trace files still contain
 641          * kernel pointers.  Detect this and suppress the results by printing
 642          * negative tid's as 0.
 643          */
 644         if (threads)
 645                 printf("%6jd %6jd %-8.*s ", (intmax_t)kth->ktr_pid,
 646                     kth->ktr_tid > 0 ? (intmax_t)kth->ktr_tid : 0,
 647                     MAXCOMLEN, kth->ktr_comm);
 648         else
 649                 printf("%6jd %-8.*s ", (intmax_t)kth->ktr_pid, MAXCOMLEN,
 650                     kth->ktr_comm);
 651         if (timestamp) {
 652                 if (timestamp & TIMESTAMP_ABSOLUTE) {
 653                         printf("%jd.%06ld ", (intmax_t)kth->ktr_time.tv_sec,
 654                             kth->ktr_time.tv_usec);
 655                 }
 656                 if (timestamp & TIMESTAMP_ELAPSED) {
 657                         if (prevtime_e.tv_sec == 0)
 658                                 prevtime_e = kth->ktr_time;
 659                         timevalsub(&kth->ktr_time, &prevtime_e);
 660                         printf("%jd.%06ld ", (intmax_t)kth->ktr_time.tv_sec,
 661                             kth->ktr_time.tv_usec);
 662                         timevaladd(&kth->ktr_time, &prevtime_e);
 663                 }
 664                 if (timestamp & TIMESTAMP_RELATIVE) {
 665                         temp = kth->ktr_time;
 666                         timevalsub(&kth->ktr_time, &prevtime);
 667                         prevtime = temp;
 668                         printf("%jd.%06ld ", (intmax_t)kth->ktr_time.tv_sec,
 669                             kth->ktr_time.tv_usec);
 670                 }
 671         }
 672         printf("%s  ", type);
 673 }
 674
 675 #include <sys/syscall.h>
 676 #define KTRACE
 677 #include <sys/kern/syscalls.c>
 678 #undef KTRACE
 679 int nsyscalls = sizeof (syscallnames) / sizeof (syscallnames[0]);
 680
 681 void
 682 ktrsyscall(struct ktr_syscall *ktr, u_int flags)
 683 {
 684         int narg = ktr->ktr_narg;
 685         register_t *ip;
 686         intmax_t arg;
 687
 688         if ((flags != 0 && ((flags & SV_ABI_MASK) != SV_ABI_FREEBSD)) ||
 689             (ktr->ktr_code >= nsyscalls || ktr->ktr_code < 0))
 690                 printf("[%d]", ktr->ktr_code);
 691         else {
 692                 printf("%s", syscallnames[ktr->ktr_code]);
 693                 if (syscallno)
 694                         printf("[%d]", ktr->ktr_code);
 695         }
 696         ip = &ktr->ktr_args[0];
 697         if (narg) {
 698                 char c = '(';
 699                 if (fancy &&
 700                     (flags == 0 || (flags & SV_ABI_MASK) == SV_ABI_FREEBSD)) {
 701                         switch (ktr->ktr_code) {
 702                         case SYS_bindat:
 703                         case SYS_connectat:
 704                         case SYS_faccessat:
 705                         case SYS_fchmodat:
 706                         case SYS_fchownat:
 707                         case SYS_fstatat:
 708                         case SYS_futimesat:
 709                         case SYS_linkat:
 710                         case SYS_mkdirat:
 711                         case SYS_mkfifoat:
 712                         case SYS_mknodat:
 713                         case SYS_openat:
 714                         case SYS_readlinkat:
 715                         case SYS_renameat:
 716                         case SYS_unlinkat:
 717                         case SYS_utimensat:
 718                                 putchar('(');
 719                                 atfdname(*ip, decimal);
 720                                 c = ',';
 721                                 ip++;
 722                                 narg--;
 723                                 break;
 724                         }
 725                         switch (ktr->ktr_code) {
 726                         case SYS_ioctl: {
 727                                 print_number(ip, narg, c);
 728                                 putchar(c);
 729                                 ioctlname(*ip, decimal);
 730                                 c = ',';
 731                                 ip++;
 732                                 narg--;
 733                                 break;
 734                         }
 735                         case SYS_ptrace:
 736                                 putchar('(');
 737                                 ptraceopname(*ip);
 738                                 c = ',';
 739                                 ip++;
 740                                 narg--;
 741                                 break;
 742                         case SYS_access:
 743                         case SYS_eaccess:
 744                         case SYS_faccessat:
 745                                 print_number(ip, narg, c);
 746                                 putchar(',');
 747                                 accessmodename(*ip);
 748                                 ip++;
 749                                 narg--;
 750                                 break;
 751                         case SYS_open:
 752                         case SYS_openat:
 753                                 print_number(ip, narg, c);
 754                                 putchar(',');
 755                                 flagsandmodename(ip[0], ip[1], decimal);
 756                                 ip += 2;
 757                                 narg -= 2;
 758                                 break;
 759                         case SYS_wait4:
 760                                 print_number(ip, narg, c);
 761                                 print_number(ip, narg, c);
 762                                 /*
 763                                  * A flags value of zero is valid for
 764                                  * wait4() but not for wait6(), so
 765                                  * handle zero special here.
 766                                  */
 767                                 if (*ip == 0) {
 768                                         print_number(ip, narg, c);
 769                                 } else {
 770                                         putchar(',');
 771                                         wait6optname(*ip);
 772                                         ip++;
 773                                         narg--;
 774                                 }
 775                                 break;
 776                         case SYS_wait6:
 777                                 putchar('(');
 778                                 idtypename(*ip, decimal);
 779                                 c = ',';
 780                                 ip++;
 781                                 narg--;
 782                                 print_number(ip, narg, c);
 783                                 print_number(ip, narg, c);
 784                                 putchar(',');
 785                                 wait6optname(*ip);
 786                                 ip++;
 787                                 narg--;
 788                                 break;
 789                         case SYS_chmod:
 790                         case SYS_fchmod:
 791                         case SYS_lchmod:
 792                                 print_number(ip, narg, c);
 793                                 putchar(',');
 794                                 modename(*ip);
 795                                 ip++;
 796                                 narg--;
 797                                 break;
 798                         case SYS_mknod:
 799                         case SYS_mknodat:
 800                                 print_number(ip, narg, c);
 801                                 putchar(',');
 802                                 modename(*ip);
 803                                 ip++;
 804                                 narg--;
 805                                 break;
 806                         case SYS_getfsstat:
 807                                 print_number(ip, narg, c);
 808                                 print_number(ip, narg, c);
 809                                 putchar(',');
 810                                 getfsstatflagsname(*ip);
 811                                 ip++;
 812                                 narg--;
 813                                 break;
 814                         case SYS_mount:
 815                                 print_number(ip, narg, c);
 816                                 print_number(ip, narg, c);
 817                                 putchar(',');
 818                                 mountflagsname(*ip);
 819                                 ip++;
 820                                 narg--;
 821                                 break;
 822                         case SYS_unmount:
 823                                 print_number(ip, narg, c);
 824                                 putchar(',');
 825                                 mountflagsname(*ip);
 826                                 ip++;
 827                                 narg--;
 828                                 break;
 829                         case SYS_recvmsg:
 830                         case SYS_sendmsg:
 831                                 print_number(ip, narg, c);
 832                                 print_number(ip, narg, c);
 833                                 putchar(',');
 834                                 sendrecvflagsname(*ip);
 835                                 ip++;
 836                                 narg--;
 837                                 break;
 838                         case SYS_recvfrom:
 839                         case SYS_sendto:
 840                                 print_number(ip, narg, c);
 841                                 print_number(ip, narg, c);
 842                                 print_number(ip, narg, c);
 843                                 putchar(',');
 844                                 sendrecvflagsname(*ip);
 845                                 ip++;
 846                                 narg--;
 847                                 break;
 848                         case SYS_chflags:
 849                         case SYS_fchflags:
 850                         case SYS_lchflags:
 851                                 print_number(ip, narg, c);
 852                                 putchar(',');
 853                                 modename(*ip);
 854                                 ip++;
 855                                 narg--;
 856                                 break;
 857                         case SYS_kill:
 858                                 print_number(ip, narg, c);
 859                                 putchar(',');
 860                                 signame(*ip);
 861                                 ip++;
 862                                 narg--;
 863                                 break;
 864                         case SYS_reboot:
 865                                 putchar('(');
 866                                 rebootoptname(*ip);
 867                                 ip++;
 868                                 narg--;
 869                                 break;
 870                         case SYS_umask:
 871                                 putchar('(');
 872                                 modename(*ip);
 873                                 ip++;
 874                                 narg--;
 875                                 break;
 876                         case SYS_msync:
 877                                 print_number(ip, narg, c);
 878                                 print_number(ip, narg, c);
 879                                 putchar(',');
 880                                 msyncflagsname(*ip);
 881                                 ip++;
 882                                 narg--;
 883                                 break;
 884 #ifdef SYS_freebsd6_mmap
 885                         case SYS_freebsd6_mmap:
 886                                 print_number(ip, narg, c);
 887                                 print_number(ip, narg, c);
 888                                 putchar(',');
 889                                 mmapprotname(*ip);
 890                                 putchar(',');
 891                                 ip++;
 892                                 narg--;
 893                                 mmapflagsname(*ip);
 894                                 ip++;
 895                                 narg--;
 896                                 break;
 897 #endif
 898                         case SYS_mmap:
 899                                 print_number(ip, narg, c);
 900                                 print_number(ip, narg, c);
 901                                 putchar(',');
 902                                 mmapprotname(*ip);
 903                                 putchar(',');
 904                                 ip++;
 905                                 narg--;
 906                                 mmapflagsname(*ip);
 907                                 ip++;
 908                                 narg--;
 909                                 break;
 910                         case SYS_mprotect:
 911                                 print_number(ip, narg, c);
 912                                 print_number(ip, narg, c);
 913                                 putchar(',');
 914                                 mmapprotname(*ip);
 915                                 ip++;
 916                                 narg--;
 917                                 break;
 918                         case SYS_madvise:
 919                                 print_number(ip, narg, c);
 920                                 print_number(ip, narg, c);
 921                                 putchar(',');
 922                                 madvisebehavname(*ip);
 923                                 ip++;
 924                                 narg--;
 925                                 break;
 926                         case SYS_setpriority:
 927                                 print_number(ip, narg, c);
 928                                 print_number(ip, narg, c);
 929                                 putchar(',');
 930                                 prioname(*ip);
 931                                 ip++;
 932                                 narg--;
 933                                 break;
 934                         case SYS_fcntl:
 935                                 print_number(ip, narg, c);
 936                                 putchar(',');
 937                                 fcntlcmdname(ip[0], ip[1], decimal);
 938                                 ip += 2;
 939                                 narg -= 2;
 940                                 break;
 941                         case SYS_socket: {
 942                                 int sockdomain;
 943                                 putchar('(');
 944                                 sockdomain = *ip;
 945                                 sockdomainname(sockdomain);
 946                                 ip++;
 947                                 narg--;
 948                                 putchar(',');
 949                                 socktypenamewithflags(*ip);
 950                                 ip++;
 951                                 narg--;
 952                                 if (sockdomain == PF_INET ||
 953                                     sockdomain == PF_INET6) {
 954                                         putchar(',');
 955                                         sockipprotoname(*ip);
 956                                         ip++;
 957                                         narg--;
 958                                 }
 959                                 c = ',';
 960                                 break;
 961                         }
 962                         case SYS_setsockopt:
 963                         case SYS_getsockopt:
 964                                 print_number(ip, narg, c);
 965                                 putchar(',');
 966                                 sockoptlevelname(*ip, decimal);
 967                                 if (*ip == SOL_SOCKET) {
 968                                         ip++;
 969                                         narg--;
 970                                         putchar(',');
 971                                         sockoptname(*ip);
 972                                 }
 973                                 ip++;
 974                                 narg--;
 975                                 break;
 976 #ifdef SYS_freebsd6_lseek
 977                         case SYS_freebsd6_lseek:
 978                                 print_number(ip, narg, c);
 979                                 /* Hidden 'pad' argument, not in lseek(2) */
 980                                 print_number(ip, narg, c);
 981                                 print_number(ip, narg, c);
 982                                 putchar(',');
 983                                 whencename(*ip);
 984                                 ip++;
 985                                 narg--;
 986                                 break;
 987 #endif
 988                         case SYS_lseek:
 989                                 print_number(ip, narg, c);
 990                                 /* Hidden 'pad' argument, not in lseek(2) */
 991                                 print_number(ip, narg, c);
 992                                 putchar(',');
 993                                 whencename(*ip);
 994                                 ip++;
 995                                 narg--;
 996                                 break;
 997                         case SYS_flock:
 998                                 print_number(ip, narg, c);
 999                                 putchar(',');
1000                                 flockname(*ip);
1001                                 ip++;
1002                                 narg--;
1003                                 break;
1004                         case SYS_mkfifo:
1005                         case SYS_mkfifoat:
1006                         case SYS_mkdir:
1007                         case SYS_mkdirat:
1008                                 print_number(ip, narg, c);
1009                                 putchar(',');
1010                                 modename(*ip);
1011                                 ip++;
1012                                 narg--;
1013                                 break;
1014                         case SYS_shutdown:
1015                                 print_number(ip, narg, c);
1016                                 putchar(',');
1017                                 shutdownhowname(*ip);
1018                                 ip++;
1019                                 narg--;
1020                                 break;
1021                         case SYS_socketpair:
1022                                 putchar('(');
1023                                 sockdomainname(*ip);
1024                                 ip++;
1025                                 narg--;
1026                                 putchar(',');
1027                                 socktypenamewithflags(*ip);
1028                                 ip++;
1029                                 narg--;
1030                                 c = ',';
1031                                 break;
1032                         case SYS_getrlimit:
1033                         case SYS_setrlimit:
1034                                 putchar('(');
1035                                 rlimitname(*ip);
1036                                 ip++;
1037                                 narg--;
1038                                 c = ',';
1039                                 break;
1040                         case SYS_quotactl:
1041                                 print_number(ip, narg, c);
1042                                 putchar(',');
1043                                 quotactlname(*ip);
1044                                 ip++;
1045                                 narg--;
1046                                 c = ',';
1047                                 break;
1048                         case SYS_nfssvc:
1049                                 putchar('(');
1050                                 nfssvcname(*ip);
1051                                 ip++;
1052                                 narg--;
1053                                 c = ',';
1054                                 break;
1055                         case SYS_rtprio:
1056                                 putchar('(');
1057                                 rtprioname(*ip);
1058                                 ip++;
1059                                 narg--;
1060                                 c = ',';
1061                                 break;
1062                         case SYS___semctl:
1063                                 print_number(ip, narg, c);
1064                                 print_number(ip, narg, c);
1065                                 putchar(',');
1066                                 semctlname(*ip);
1067                                 ip++;
1068                                 narg--;
1069                                 break;
1070                         case SYS_semget:
1071                                 print_number(ip, narg, c);
1072                                 print_number(ip, narg, c);
1073                                 putchar(',');
1074                                 semgetname(*ip);
1075                                 ip++;
1076                                 narg--;
1077                                 break;
1078                         case SYS_msgctl:
1079                                 print_number(ip, narg, c);
1080                                 putchar(',');
1081                                 shmctlname(*ip);
1082                                 ip++;
1083                                 narg--;
1084                                 break;
1085                         case SYS_shmat:
1086                                 print_number(ip, narg, c);
1087                                 print_number(ip, narg, c);
1088                                 putchar(',');
1089                                 shmatname(*ip);
1090                                 ip++;
1091                                 narg--;
1092                                 break;
1093                         case SYS_shmctl:
1094                                 print_number(ip, narg, c);
1095                                 putchar(',');
1096                                 shmctlname(*ip);
1097                                 ip++;
1098                                 narg--;
1099                                 break;
1100                         case SYS_shm_open:
1101                                 print_number(ip, narg, c);
1102                                 putchar(',');
1103                                 flagsname(ip[0]);
1104                                 printf(",0%o", (unsigned int)ip[1]);
1105                                 ip += 3;
1106                                 narg -= 3;
1107                                 break;
1108                         case SYS_minherit:
1109                                 print_number(ip, narg, c);
1110                                 print_number(ip, narg, c);
1111                                 putchar(',');
1112                                 minheritname(*ip);
1113                                 ip++;
1114                                 narg--;
1115                                 break;
1116                         case SYS_rfork:
1117                                 putchar('(');
1118                                 rforkname(*ip);
1119                                 ip++;
1120                                 narg--;
1121                                 c = ',';
1122                                 break;
1123                         case SYS_lio_listio:
1124                                 putchar('(');
1125                                 lio_listioname(*ip);
1126                                 ip++;
1127                                 narg--;
1128                                 c = ',';
1129                                 break;
1130                         case SYS_mlockall:
1131                                 putchar('(');
1132                                 mlockallname(*ip);
1133                                 ip++;
1134                                 narg--;
1135                                 break;
1136                         case SYS_sched_setscheduler:
1137                                 print_number(ip, narg, c);
1138                                 putchar(',');
1139                                 schedpolicyname(*ip);
1140                                 ip++;
1141                                 narg--;
1142                                 break;
1143                         case SYS_sched_get_priority_max:
1144                         case SYS_sched_get_priority_min:
1145                                 putchar('(');
1146                                 schedpolicyname(*ip);
1147                                 ip++;
1148                                 narg--;
1149                                 break;
1150                         case SYS_sendfile:
1151                                 print_number(ip, narg, c);
1152                                 print_number(ip, narg, c);
1153                                 print_number(ip, narg, c);
1154                                 print_number(ip, narg, c);
1155                                 print_number(ip, narg, c);
1156                                 print_number(ip, narg, c);
1157                                 putchar(',');
1158                                 sendfileflagsname(*(int *)ip);
1159                                 ip++;
1160                                 narg--;
1161                                 break;
1162                         case SYS_kldsym:
1163                                 print_number(ip, narg, c);
1164                                 putchar(',');
1165                                 kldsymcmdname(*ip);
1166                                 ip++;
1167                                 narg--;
1168                                 break;
1169                         case SYS_sigprocmask:
1170                                 putchar('(');
1171                                 sigprocmaskhowname(*ip);
1172                                 ip++;
1173                                 narg--;
1174                                 c = ',';
1175                                 break;
1176                         case SYS___acl_get_file:
1177                         case SYS___acl_set_file:
1178                         case SYS___acl_get_fd:
1179                         case SYS___acl_set_fd:
1180                         case SYS___acl_delete_file:
1181                         case SYS___acl_delete_fd:
1182                         case SYS___acl_aclcheck_file:
1183                         case SYS___acl_aclcheck_fd:
1184                         case SYS___acl_get_link:
1185                         case SYS___acl_set_link:
1186                         case SYS___acl_delete_link:
1187                         case SYS___acl_aclcheck_link:
1188                                 print_number(ip, narg, c);
1189                                 putchar(',');
1190                                 acltypename(*ip);
1191                                 ip++;
1192                                 narg--;
1193                                 break;
1194                         case SYS_sigaction:
1195                                 putchar('(');
1196                                 signame(*ip);
1197                                 ip++;
1198                                 narg--;
1199                                 c = ',';
1200                                 break;
1201                         case SYS_extattrctl:
1202                                 print_number(ip, narg, c);
1203                                 putchar(',');
1204                                 extattrctlname(*ip);
1205                                 ip++;
1206                                 narg--;
1207                                 break;
1208                         case SYS_nmount:
1209                                 print_number(ip, narg, c);
1210                                 print_number(ip, narg, c);
1211                                 putchar(',');
1212                                 mountflagsname(*ip);
1213                                 ip++;
1214                                 narg--;
1215                                 break;
1216                         case SYS_thr_create:
1217                                 print_number(ip, narg, c);
1218                                 print_number(ip, narg, c);
1219                                 putchar(',');
1220                                 thrcreateflagsname(*ip);
1221                                 ip++;
1222                                 narg--;
1223                                 break;
1224                         case SYS_thr_kill:
1225                                 print_number(ip, narg, c);
1226                                 putchar(',');
1227                                 signame(*ip);
1228                                 ip++;
1229                                 narg--;
1230                                 break;
1231                         case SYS_kldunloadf:
1232                                 print_number(ip, narg, c);
1233                                 putchar(',');
1234                                 kldunloadfflagsname(*ip);
1235                                 ip++;
1236                                 narg--;
1237                                 break;
1238                         case SYS_linkat:
1239                         case SYS_renameat:
1240                         case SYS_symlinkat:
1241                                 print_number(ip, narg, c);
1242                                 putchar(',');
1243                                 atfdname(*ip, decimal);
1244                                 ip++;
1245                                 narg--;
1246                                 break;
1247                         case SYS_cap_fcntls_limit:
1248                                 print_number(ip, narg, c);
1249                                 putchar(',');
1250                                 arg = *ip;
1251                                 ip++;
1252                                 narg--;
1253                                 capfcntlname(arg);
1254                                 break;
1255                         case SYS_posix_fadvise:
1256                                 print_number(ip, narg, c);
1257                                 print_number(ip, narg, c);
1258                                 print_number(ip, narg, c);
1259                                 (void)putchar(',');
1260                                 fadvisebehavname((int)*ip);
1261                                 ip++;
1262                                 narg--;
1263                                 break;
1264                         case SYS_procctl:
1265                                 putchar('(');
1266                                 idtypename(*ip, decimal);
1267                                 c = ',';
1268                                 ip++;
1269                                 narg--;
1270                                 print_number(ip, narg, c);
1271                                 putchar(',');
1272                                 procctlcmdname(*ip);
1273                                 ip++;
1274                                 narg--;
1275                                 break;
1276                         case SYS__umtx_op:
1277                                 print_number(ip, narg, c);
1278                                 putchar(',');
1279                                 umtxopname(*ip);
1280                                 switch (*ip) {
1281                                 case UMTX_OP_CV_WAIT:
1282                                         ip++;
1283                                         narg--;
1284                                         putchar(',');
1285                                         umtxcvwaitflags(*ip);
1286                                         break;
1287                                 case UMTX_OP_RW_RDLOCK:
1288                                         ip++;
1289                                         narg--;
1290                                         putchar(',');
1291                                         umtxrwlockflags(*ip);
1292                                         break;
1293                                 }
1294                                 ip++;
1295                                 narg--;
1296                         }
1297                 }
1298                 while (narg > 0) {
1299                         print_number(ip, narg, c);
1300                 }
1301                 putchar(')');
1302         }
1303         putchar('\n');
1304 }
1305
1306 void
1307 ktrsysret(struct ktr_sysret *ktr, u_int flags)
1308 {
1309         register_t ret = ktr->ktr_retval;
1310         int error = ktr->ktr_error;
1311         int code = ktr->ktr_code;
1312
1313         if ((flags != 0 && ((flags & SV_ABI_MASK) != SV_ABI_FREEBSD)) ||
1314             (code >= nsyscalls || code < 0))
1315                 printf("[%d] ", code);
1316         else {
1317                 printf("%s", syscallnames[code]);
1318                 if (syscallno)
1319                         printf("[%d]", code);
1320                 printf(" ");
1321         }
1322
1323         if (error == 0) {
1324                 if (fancy) {
1325                         printf("%ld", (long)ret);
1326                         if (ret < 0 || ret > 9)
1327                                 printf("/%#lx", (unsigned long)ret);
1328                 } else {
1329                         if (decimal)
1330                                 printf("%ld", (long)ret);
1331                         else
1332                                 printf("%#lx", (unsigned long)ret);
1333                 }
1334         } else if (error == ERESTART)
1335                 printf("RESTART");
1336         else if (error == EJUSTRETURN)
1337                 printf("JUSTRETURN");
1338         else {
1339                 printf("-1 errno %d", ktr->ktr_error);
1340                 if (fancy)
1341                         printf(" %s", strerror(ktr->ktr_error));
1342         }
1343         putchar('\n');
1344 }
1345
1346 void
1347 ktrnamei(char *cp, int len)
1348 {
1349         printf("\"%.*s\"\n", len, cp);
1350 }
1351
1352 void
1353 hexdump(char *p, int len, int screenwidth)
1354 {
1355         int n, i;
1356         int width;
1357
1358         width = 0;
1359         do {
1360                 width += 2;
1361                 i = 13;                 /* base offset */
1362                 i += (width / 2) + 1;   /* spaces every second byte */
1363                 i += (width * 2);       /* width of bytes */
1364                 i += 3;                 /* "  |" */
1365                 i += width;             /* each byte */
1366                 i += 1;                 /* "|" */
1367         } while (i < screenwidth);
1368         width -= 2;
1369
1370         for (n = 0; n < len; n += width) {
1371                 for (i = n; i < n + width; i++) {
1372                         if ((i % width) == 0) { /* beginning of line */
1373                                 printf("       0x%04x", i);
1374                         }
1375                         if ((i % 2) == 0) {
1376                                 printf(" ");
1377                         }
1378                         if (i < len)
1379                                 printf("%02x", p[i] & 0xff);
1380                         else
1381                                 printf("  ");
1382                 }
1383                 printf("  |");
1384                 for (i = n; i < n + width; i++) {
1385                         if (i >= len)
1386                                 break;
1387                         if (p[i] >= ' ' && p[i] <= '~')
1388                                 printf("%c", p[i]);
1389                         else
1390                                 printf(".");
1391                 }
1392                 printf("|\n");
1393         }
1394         if ((i % width) != 0)
1395                 printf("\n");
1396 }
1397
1398 void
1399 visdump(char *dp, int datalen, int screenwidth)
1400 {
1401         int col = 0;
1402         char *cp;
1403         int width;
1404         char visbuf[5];
1405
1406         printf("       \"");
1407         col = 8;
1408         for (;datalen > 0; datalen--, dp++) {
1409                  vis(visbuf, *dp, VIS_CSTYLE, *(dp+1));
1410                 cp = visbuf;
1411                 /*
1412                  * Keep track of printables and
1413                  * space chars (like fold(1)).
1414                  */
1415                 if (col == 0) {
1416                         putchar('\t');
1417                         col = 8;
1418                 }
1419                 switch(*cp) {
1420                 case '\n':
1421                         col = 0;
1422                         putchar('\n');
1423                         continue;
1424                 case '\t':
1425                         width = 8 - (col&07);
1426                         break;
1427                 default:
1428                         width = strlen(cp);
1429                 }
1430                 if (col + width > (screenwidth-2)) {
1431                         printf("\\\n\t");
1432                         col = 8;
1433                 }
1434                 col += width;
1435                 do {
1436                         putchar(*cp++);
1437                 } while (*cp);
1438         }
1439         if (col == 0)
1440                 printf("       ");
1441         printf("\"\n");
1442 }
1443
1444 void
1445 ktrgenio(struct ktr_genio *ktr, int len)
1446 {
1447         int datalen = len - sizeof (struct ktr_genio);
1448         char *dp = (char *)ktr + sizeof (struct ktr_genio);
1449         static int screenwidth = 0;
1450         int i, binary;
1451
1452         printf("fd %d %s %d byte%s\n", ktr->ktr_fd,
1453                 ktr->ktr_rw == UIO_READ ? "read" : "wrote", datalen,
1454                 datalen == 1 ? "" : "s");
1455         if (suppressdata)
1456                 return;
1457         if (screenwidth == 0) {
1458                 struct winsize ws;
1459
1460                 if (fancy && ioctl(fileno(stderr), TIOCGWINSZ, &ws) != -1 &&
1461                     ws.ws_col > 8)
1462                         screenwidth = ws.ws_col;
1463                 else
1464                         screenwidth = 80;
1465         }
1466         if (maxdata && datalen > maxdata)
1467                 datalen = maxdata;
1468
1469         for (i = 0, binary = 0; i < datalen && binary == 0; i++)  {
1470                 if (dp[i] >= 32 && dp[i] < 127)
1471                         continue;
1472                 if (dp[i] == 10 || dp[i] == 13 || dp[i] == 0 || dp[i] == 9)
1473                         continue;
1474                 binary = 1;
1475         }
1476         if (binary)
1477                 hexdump(dp, datalen, screenwidth);
1478         else
1479                 visdump(dp, datalen, screenwidth);
1480 }
1481
1482 const char *signames[] = {
1483         "NULL", "HUP", "INT", "QUIT", "ILL", "TRAP", "IOT",     /*  1 - 6  */
1484         "EMT", "FPE", "KILL", "BUS", "SEGV", "SYS",             /*  7 - 12 */
1485         "PIPE", "ALRM",  "TERM", "URG", "STOP", "TSTP",         /* 13 - 18 */
1486         "CONT", "CHLD", "TTIN", "TTOU", "IO", "XCPU",           /* 19 - 24 */
1487         "XFSZ", "VTALRM", "PROF", "WINCH", "29", "USR1",        /* 25 - 30 */
1488         "USR2", NULL,                                           /* 31 - 32 */
1489 };
1490
1491 void
1492 ktrpsig(struct ktr_psig *psig)
1493 {
1494         if (psig->signo > 0 && psig->signo < NSIG)
1495                 printf("SIG%s ", signames[psig->signo]);
1496         else
1497                 printf("SIG %d ", psig->signo);
1498         if (psig->action == SIG_DFL) {
1499                 printf("SIG_DFL code=");
1500                 sigcodename(psig->signo, psig->code);
1501                 putchar('\n');
1502         } else {
1503                 printf("caught handler=0x%lx mask=0x%x code=",
1504                     (u_long)psig->action, psig->mask.__bits[0]);
1505                 sigcodename(psig->signo, psig->code);
1506                 putchar('\n');
1507         }
1508 }
1509
1510 void
1511 ktrcsw_old(struct ktr_csw_old *cs)
1512 {
1513         printf("%s %s\n", cs->out ? "stop" : "resume",
1514                 cs->user ? "user" : "kernel");
1515 }
1516
1517 void
1518 ktrcsw(struct ktr_csw *cs)
1519 {
1520         printf("%s %s \"%s\"\n", cs->out ? "stop" : "resume",
1521             cs->user ? "user" : "kernel", cs->wmesg);
1522 }
1523
1524 #define UTRACE_DLOPEN_START             1
1525 #define UTRACE_DLOPEN_STOP              2
1526 #define UTRACE_DLCLOSE_START            3
1527 #define UTRACE_DLCLOSE_STOP             4
1528 #define UTRACE_LOAD_OBJECT              5
1529 #define UTRACE_UNLOAD_OBJECT            6
1530 #define UTRACE_ADD_RUNDEP               7
1531 #define UTRACE_PRELOAD_FINISHED         8
1532 #define UTRACE_INIT_CALL                9
1533 #define UTRACE_FINI_CALL                10
1534 #define UTRACE_DLSYM_START              11
1535 #define UTRACE_DLSYM_STOP               12
1536
1537 struct utrace_rtld {
1538         char sig[4];                            /* 'RTLD' */
1539         int event;
1540         void *handle;
1541         void *mapbase;
1542         size_t mapsize;
1543         int refcnt;
1544         char name[MAXPATHLEN];
1545 };
1546
1547 void
1548 ktruser_rtld(int len, void *p)
1549 {
1550         struct utrace_rtld *ut = p;
1551         unsigned char *cp;
1552         void *parent;
1553         int mode;
1554
1555         switch (ut->event) {
1556         case UTRACE_DLOPEN_START:
1557                 mode = ut->refcnt;
1558                 printf("dlopen(%s, ", ut->name);
1559                 switch (mode & RTLD_MODEMASK) {
1560                 case RTLD_NOW:
1561                         printf("RTLD_NOW");
1562                         break;
1563                 case RTLD_LAZY:
1564                         printf("RTLD_LAZY");
1565                         break;
1566                 default:
1567                         printf("%#x", mode & RTLD_MODEMASK);
1568                 }
1569                 if (mode & RTLD_GLOBAL)
1570                         printf(" | RTLD_GLOBAL");
1571                 if (mode & RTLD_TRACE)
1572                         printf(" | RTLD_TRACE");
1573                 if (mode & ~(RTLD_MODEMASK | RTLD_GLOBAL | RTLD_TRACE))
1574                         printf(" | %#x", mode &
1575                             ~(RTLD_MODEMASK | RTLD_GLOBAL | RTLD_TRACE));
1576                 printf(")\n");
1577                 break;
1578         case UTRACE_DLOPEN_STOP:
1579                 printf("%p = dlopen(%s) ref %d\n", ut->handle, ut->name,
1580                     ut->refcnt);
1581                 break;
1582         case UTRACE_DLCLOSE_START:
1583                 printf("dlclose(%p) (%s, %d)\n", ut->handle, ut->name,
1584                     ut->refcnt);
1585                 break;
1586         case UTRACE_DLCLOSE_STOP:
1587                 printf("dlclose(%p) finished\n", ut->handle);
1588                 break;
1589         case UTRACE_LOAD_OBJECT:
1590                 printf("RTLD: loaded   %p @ %p - %p (%s)\n", ut->handle,
1591                     ut->mapbase, (char *)ut->mapbase + ut->mapsize - 1,
1592                     ut->name);
1593                 break;
1594         case UTRACE_UNLOAD_OBJECT:
1595                 printf("RTLD: unloaded %p @ %p - %p (%s)\n", ut->handle,
1596                     ut->mapbase, (char *)ut->mapbase + ut->mapsize - 1,
1597                     ut->name);
1598                 break;
1599         case UTRACE_ADD_RUNDEP:
1600                 parent = ut->mapbase;
1601                 printf("RTLD: %p now depends on %p (%s, %d)\n", parent,
1602                     ut->handle, ut->name, ut->refcnt);
1603                 break;
1604         case UTRACE_PRELOAD_FINISHED:
1605                 printf("RTLD: LD_PRELOAD finished\n");
1606                 break;
1607         case UTRACE_INIT_CALL:
1608                 printf("RTLD: init %p for %p (%s)\n", ut->mapbase, ut->handle,
1609                     ut->name);
1610                 break;
1611         case UTRACE_FINI_CALL:
1612                 printf("RTLD: fini %p for %p (%s)\n", ut->mapbase, ut->handle,
1613                     ut->name);
1614                 break;
1615         case UTRACE_DLSYM_START:
1616                 printf("RTLD: dlsym(%p, %s)\n", ut->handle, ut->name);
1617                 break;
1618         case UTRACE_DLSYM_STOP:
1619                 printf("RTLD: %p = dlsym(%p, %s)\n", ut->mapbase, ut->handle,
1620                     ut->name);
1621                 break;
1622         default:
1623                 cp = p;
1624                 cp += 4;
1625                 len -= 4;
1626                 printf("RTLD: %d ", len);
1627                 while (len--)
1628                         if (decimal)
1629                                 printf(" %d", *cp++);
1630                         else
1631                                 printf(" %02x", *cp++);
1632                 printf("\n");
1633         }
1634 }
1635
1636 struct utrace_malloc {
1637         void *p;
1638         size_t s;
1639         void *r;
1640 };
1641
1642 void
1643 ktruser_malloc(void *p)
1644 {
1645         struct utrace_malloc *ut = p;
1646
1647         if (ut->p == (void *)(intptr_t)(-1))
1648                 printf("malloc_init()\n");
1649         else if (ut->s == 0)
1650                 printf("free(%p)\n", ut->p);
1651         else if (ut->p == NULL)
1652                 printf("%p = malloc(%zu)\n", ut->r, ut->s);
1653         else
1654                 printf("%p = realloc(%p, %zu)\n", ut->r, ut->p, ut->s);
1655 }
1656
1657 void
1658 ktruser(int len, void *p)
1659 {
1660         unsigned char *cp;
1661
1662         if (len >= 8 && bcmp(p, "RTLD", 4) == 0) {
1663                 ktruser_rtld(len, p);
1664                 return;
1665         }
1666
1667         if (len == sizeof(struct utrace_malloc)) {
1668                 ktruser_malloc(p);
1669                 return;
1670         }
1671
1672         printf("%d ", len);
1673         cp = p;
1674         while (len--)
1675                 if (decimal)
1676                         printf(" %d", *cp++);
1677                 else
1678                         printf(" %02x", *cp++);
1679         printf("\n");
1680 }
1681
1682 void
1683 ktrcaprights(cap_rights_t *rightsp)
1684 {
1685
1686         printf("cap_rights_t ");
1687         capname(rightsp);
1688         printf("\n");
1689 }
1690
1691 void
1692 ktrsockaddr(struct sockaddr *sa)
1693 {
1694 /*
1695  TODO: Support additional address families
1696         #include <netnatm/natm.h>
1697         struct sockaddr_natm    *natm;
1698         #include <netsmb/netbios.h>
1699         struct sockaddr_nb      *nb;
1700 */
1701         char addr[64];
1702
1703         /*
1704          * note: ktrstruct() has already verified that sa points to a
1705          * buffer at least sizeof(struct sockaddr) bytes long and exactly
1706          * sa->sa_len bytes long.
1707          */
1708         printf("struct sockaddr { ");
1709         sockfamilyname(sa->sa_family);
1710         printf(", ");
1711
1712 #define check_sockaddr_len(n)                                   \
1713         if (sa_##n.s##n##_len < sizeof(struct sockaddr_##n)) {  \
1714                 printf("invalid");                              \
1715                 break;                                          \
1716         }
1717
1718         switch(sa->sa_family) {
1719         case AF_INET: {
1720                 struct sockaddr_in sa_in;
1721
1722                 memset(&sa_in, 0, sizeof(sa_in));
1723                 memcpy(&sa_in, sa, sa->sa_len);
1724                 check_sockaddr_len(in);
1725                 inet_ntop(AF_INET, &sa_in.sin_addr, addr, sizeof addr);
1726                 printf("%s:%u", addr, ntohs(sa_in.sin_port));
1727                 break;
1728         }
1729         case AF_INET6: {
1730                 struct sockaddr_in6 sa_in6;
1731
1732                 memset(&sa_in6, 0, sizeof(sa_in6));
1733                 memcpy(&sa_in6, sa, sa->sa_len);
1734                 check_sockaddr_len(in6);
1735                 getnameinfo((struct sockaddr *)&sa_in6, sizeof(sa_in6),
1736                     addr, sizeof(addr), NULL, 0, NI_NUMERICHOST);
1737                 printf("[%s]:%u", addr, htons(sa_in6.sin6_port));
1738                 break;
1739         }
1740         case AF_UNIX: {
1741                 struct sockaddr_un sa_un;
1742
1743                 memset(&sa_un, 0, sizeof(sa_un));
1744                 memcpy(&sa_un, sa, sa->sa_len);
1745                 printf("%.*s", (int)sizeof(sa_un.sun_path), sa_un.sun_path);
1746                 break;
1747         }
1748         default:
1749                 printf("unknown address family");
1750         }
1751         printf(" }\n");
1752 }
1753
1754 void
1755 ktrstat(struct stat *statp)
1756 {
1757         char mode[12], timestr[PATH_MAX + 4];
1758         struct passwd *pwd;
1759         struct group  *grp;
1760         struct tm *tm;
1761
1762         /*
1763          * note: ktrstruct() has already verified that statp points to a
1764          * buffer exactly sizeof(struct stat) bytes long.
1765          */
1766         printf("struct stat {");
1767         printf("dev=%ju, ino=%ju, ",
1768                 (uintmax_t)statp->st_dev, (uintmax_t)statp->st_ino);
1769         if (resolv == 0)
1770                 printf("mode=0%jo, ", (uintmax_t)statp->st_mode);
1771         else {
1772                 strmode(statp->st_mode, mode);
1773                 printf("mode=%s, ", mode);
1774         }
1775         printf("nlink=%ju, ", (uintmax_t)statp->st_nlink);
1776         if (resolv == 0) {
1777                 pwd = NULL;
1778         } else {
1779 #ifdef HAVE_LIBCAPSICUM
1780                 if (cappwd != NULL)
1781                         pwd = cap_getpwuid(cappwd, statp->st_uid);
1782                 else
1783 #endif
1784                         pwd = getpwuid(statp->st_uid);
1785         }
1786         if (pwd == NULL)
1787                 printf("uid=%ju, ", (uintmax_t)statp->st_uid);
1788         else
1789                 printf("uid=\"%s\", ", pwd->pw_name);
1790         if (resolv == 0) {
1791                 grp = NULL;
1792         } else {
1793 #ifdef HAVE_LIBCAPSICUM
1794                 if (capgrp != NULL)
1795                         grp = cap_getgrgid(capgrp, statp->st_gid);
1796                 else
1797 #endif
1798                         grp = getgrgid(statp->st_gid);
1799         }
1800         if (grp == NULL)
1801                 printf("gid=%ju, ", (uintmax_t)statp->st_gid);
1802         else
1803                 printf("gid=\"%s\", ", grp->gr_name);
1804         printf("rdev=%ju, ", (uintmax_t)statp->st_rdev);
1805         printf("atime=");
1806         if (resolv == 0)
1807                 printf("%jd", (intmax_t)statp->st_atim.tv_sec);
1808         else {
1809                 tm = localtime(&statp->st_atim.tv_sec);
1810                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1811                 printf("\"%s\"", timestr);
1812         }
1813         if (statp->st_atim.tv_nsec != 0)
1814                 printf(".%09ld, ", statp->st_atim.tv_nsec);
1815         else
1816                 printf(", ");
1817         printf("stime=");
1818         if (resolv == 0)
1819                 printf("%jd", (intmax_t)statp->st_mtim.tv_sec);
1820         else {
1821                 tm = localtime(&statp->st_mtim.tv_sec);
1822                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1823                 printf("\"%s\"", timestr);
1824         }
1825         if (statp->st_mtim.tv_nsec != 0)
1826                 printf(".%09ld, ", statp->st_mtim.tv_nsec);
1827         else
1828                 printf(", ");
1829         printf("ctime=");
1830         if (resolv == 0)
1831                 printf("%jd", (intmax_t)statp->st_ctim.tv_sec);
1832         else {
1833                 tm = localtime(&statp->st_ctim.tv_sec);
1834                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1835                 printf("\"%s\"", timestr);
1836         }
1837         if (statp->st_ctim.tv_nsec != 0)
1838                 printf(".%09ld, ", statp->st_ctim.tv_nsec);
1839         else
1840                 printf(", ");
1841         printf("birthtime=");
1842         if (resolv == 0)
1843                 printf("%jd", (intmax_t)statp->st_birthtim.tv_sec);
1844         else {
1845                 tm = localtime(&statp->st_birthtim.tv_sec);
1846                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1847                 printf("\"%s\"", timestr);
1848         }
1849         if (statp->st_birthtim.tv_nsec != 0)
1850                 printf(".%09ld, ", statp->st_birthtim.tv_nsec);
1851         else
1852                 printf(", ");
1853         printf("size=%jd, blksize=%ju, blocks=%jd, flags=0x%x",
1854                 (uintmax_t)statp->st_size, (uintmax_t)statp->st_blksize,
1855                 (intmax_t)statp->st_blocks, statp->st_flags);
1856         printf(" }\n");
1857 }
1858
1859 void
1860 ktrstruct(char *buf, size_t buflen)
1861 {
1862         char *name, *data;
1863         size_t namelen, datalen;
1864         int i;
1865         cap_rights_t rights;
1866         struct stat sb;
1867         struct sockaddr_storage ss;
1868
1869         for (name = buf, namelen = 0;
1870              namelen < buflen && name[namelen] != '\0';
1871              ++namelen)
1872                 /* nothing */;
1873         if (namelen == buflen)
1874                 goto invalid;
1875         if (name[namelen] != '\0')
1876                 goto invalid;
1877         data = buf + namelen + 1;
1878         datalen = buflen - namelen - 1;
1879         if (datalen == 0)
1880                 goto invalid;
1881         /* sanity check */
1882         for (i = 0; i < (int)namelen; ++i)
1883                 if (!isalpha(name[i]))
1884                         goto invalid;
1885         if (strcmp(name, "caprights") == 0) {
1886                 if (datalen != sizeof(cap_rights_t))
1887                         goto invalid;
1888                 memcpy(&rights, data, datalen);
1889                 ktrcaprights(&rights);
1890         } else if (strcmp(name, "stat") == 0) {
1891                 if (datalen != sizeof(struct stat))
1892                         goto invalid;
1893                 memcpy(&sb, data, datalen);
1894                 ktrstat(&sb);
1895         } else if (strcmp(name, "sockaddr") == 0) {
1896                 if (datalen > sizeof(ss))
1897                         goto invalid;
1898                 memcpy(&ss, data, datalen);
1899                 if (datalen != ss.ss_len)
1900                         goto invalid;
1901                 ktrsockaddr((struct sockaddr *)&ss);
1902         } else {
1903                 printf("unknown structure\n");
1904         }
1905         return;
1906 invalid:
1907         printf("invalid record\n");
1908 }
1909
1910 void
1911 ktrcapfail(struct ktr_cap_fail *ktr)
1912 {
1913         switch (ktr->cap_type) {
1914         case CAPFAIL_NOTCAPABLE:
1915                 /* operation on fd with insufficient capabilities */
1916                 printf("operation requires ");
1917                 capname(&ktr->cap_needed);
1918                 printf(", descriptor holds ");
1919                 capname(&ktr->cap_held);
1920                 break;
1921         case CAPFAIL_INCREASE:
1922                 /* requested more capabilities than fd already has */
1923                 printf("attempt to increase capabilities from ");
1924                 capname(&ktr->cap_held);
1925                 printf(" to ");
1926                 capname(&ktr->cap_needed);
1927                 break;
1928         case CAPFAIL_SYSCALL:
1929                 /* called restricted syscall */
1930                 printf("disallowed system call");
1931                 break;
1932         case CAPFAIL_LOOKUP:
1933                 /* used ".." in strict-relative mode */
1934                 printf("restricted VFS lookup");
1935                 break;
1936         default:
1937                 printf("unknown capability failure: ");
1938                 capname(&ktr->cap_needed);
1939                 printf(" ");
1940                 capname(&ktr->cap_held);
1941                 break;
1942         }
1943         printf("\n");
1944 }
1945
1946 void
1947 ktrfault(struct ktr_fault *ktr)
1948 {
1949
1950         printf("0x%jx ", (uintmax_t)ktr->vaddr);
1951         vmprotname(ktr->type);
1952         printf("\n");
1953 }
1954
1955 void
1956 ktrfaultend(struct ktr_faultend *ktr)
1957 {
1958
1959         vmresultname(ktr->result);
1960         printf("\n");
1961 }
1962
1963 #if defined(__amd64__) || defined(__i386__)
1964 void
1965 linux_ktrsyscall(struct ktr_syscall *ktr)
1966 {
1967         int narg = ktr->ktr_narg;
1968         register_t *ip;
1969
1970         if (ktr->ktr_code >= nlinux_syscalls || ktr->ktr_code < 0)
1971                 printf("[%d]", ktr->ktr_code);
1972         else {
1973                 printf("%s", linux_syscallnames[ktr->ktr_code]);
1974                 if (syscallno)
1975                         printf("[%d]", ktr->ktr_code);
1976         }
1977         ip = &ktr->ktr_args[0];
1978         if (narg) {
1979                 char c = '(';
1980                 while (narg > 0)
1981                         print_number(ip, narg, c);
1982                 putchar(')');
1983         }
1984         putchar('\n');
1985 }
1986
1987 void
1988 linux_ktrsysret(struct ktr_sysret *ktr)
1989 {
1990         register_t ret = ktr->ktr_retval;
1991         int error = ktr->ktr_error;
1992         int code = ktr->ktr_code;
1993
1994         if (code >= nlinux_syscalls || code < 0)
1995                 printf("[%d] ", code);
1996         else {
1997                 printf("%s", linux_syscallnames[code]);
1998                 if (syscallno)
1999                         printf("[%d]", code);
2000                 printf(" ");
2001         }
2002
2003         if (error == 0) {
2004                 if (fancy) {
2005                         printf("%ld", (long)ret);
2006                         if (ret < 0 || ret > 9)
2007                                 printf("/%#lx", (unsigned long)ret);
2008                 } else {
2009                         if (decimal)
2010                                 printf("%ld", (long)ret);
2011                         else
2012                                 printf("%#lx", (unsigned long)ret);
2013                 }
2014         } else if (error == ERESTART)
2015                 printf("RESTART");
2016         else if (error == EJUSTRETURN)
2017                 printf("JUSTRETURN");
2018         else {
2019                 if (ktr->ktr_error <= ELAST + 1)
2020                         error = abs(bsd_to_linux_errno[ktr->ktr_error]);
2021                 else
2022                         error = 999;
2023                 printf("-1 errno %d", error);
2024                 if (fancy)
2025                         printf(" %s", strerror(ktr->ktr_error));
2026         }
2027         putchar('\n');
2028 }
2029 #endif
2030
2031 void
2032 usage(void)
2033 {
2034         fprintf(stderr, "usage: kdump [-dEnlHRrSsTA] [-f trfile] "
2035             "[-m maxdata] [-p pid] [-t trstr]\n");
2036         exit(1);
2037 }