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
 356         TAILQ_INIT(&trace_procs);
 357         drop_logged = 0;
 358         while (fread_tail(&ktr_header, sizeof(struct ktr_header), 1)) {
 359                 if (ktr_header.ktr_type & KTR_DROP) {
 360                         ktr_header.ktr_type &= ~KTR_DROP;
 361                         if (!drop_logged && threads) {
 362                                 printf(
 363                                     "%6jd %6jd %-8.*s Events dropped.\n",
 364                                     (intmax_t)ktr_header.ktr_pid,
 365                                     ktr_header.ktr_tid > 0 ?
 366                                     (intmax_t)ktr_header.ktr_tid : 0,
 367                                     MAXCOMLEN, ktr_header.ktr_comm);
 368                                 drop_logged = 1;
 369                         } else if (!drop_logged) {
 370                                 printf("%6jd %-8.*s Events dropped.\n",
 371                                     (intmax_t)ktr_header.ktr_pid, MAXCOMLEN,
 372                                     ktr_header.ktr_comm);
 373                                 drop_logged = 1;
 374                         }
 375                 }
 376                 if (trpoints & (1<<ktr_header.ktr_type))
 377                         if (pid == 0 || ktr_header.ktr_pid == pid ||
 378                             ktr_header.ktr_tid == pid)
 379                                 dumpheader(&ktr_header);
 380                 if ((ktrlen = ktr_header.ktr_len) < 0)
 381                         errx(1, "bogus length 0x%x", ktrlen);
 382                 if (ktrlen > size) {
 383                         m = realloc(m, ktrlen+1);
 384                         if (m == NULL)
 385                                 errx(1, "%s", strerror(ENOMEM));
 386                         size = ktrlen;
 387                 }
 388                 if (ktrlen && fread_tail(m, ktrlen, 1) == 0)
 389                         errx(1, "data too short");
 390                 if (fetchprocinfo(&ktr_header, (u_int *)m) != 0)
 391                         continue;
 392                 sv_flags = abidump(&ktr_header);
 393                 if (pid && ktr_header.ktr_pid != pid &&
 394                     ktr_header.ktr_tid != pid)
 395                         continue;
 396                 if ((trpoints & (1<<ktr_header.ktr_type)) == 0)
 397                         continue;
 398                 drop_logged = 0;
 399                 switch (ktr_header.ktr_type) {
 400                 case KTR_SYSCALL:
 401 #if defined(__amd64__) || defined(__i386__)
 402                         if ((sv_flags & SV_ABI_MASK) == SV_ABI_LINUX)
 403                                 linux_ktrsyscall((struct ktr_syscall *)m);
 404                         else
 405 #endif
 406                                 ktrsyscall((struct ktr_syscall *)m, sv_flags);
 407                         break;
 408                 case KTR_SYSRET:
 409 #if defined(__amd64__) || defined(__i386__)
 410                         if ((sv_flags & SV_ABI_MASK) == SV_ABI_LINUX)
 411                                 linux_ktrsysret((struct ktr_sysret *)m);
 412                         else
 413 #endif
 414                                 ktrsysret((struct ktr_sysret *)m, sv_flags);
 415                         break;
 416                 case KTR_NAMEI:
 417                 case KTR_SYSCTL:
 418                         ktrnamei(m, ktrlen);
 419                         break;
 420                 case KTR_GENIO:
 421                         ktrgenio((struct ktr_genio *)m, ktrlen);
 422                         break;
 423                 case KTR_PSIG:
 424                         ktrpsig((struct ktr_psig *)m);
 425                         break;
 426                 case KTR_CSW:
 427                         if (ktrlen == sizeof(struct ktr_csw_old))
 428                                 ktrcsw_old((struct ktr_csw_old *)m);
 429                         else
 430                                 ktrcsw((struct ktr_csw *)m);
 431                         break;
 432                 case KTR_USER:
 433                         ktruser(ktrlen, m);
 434                         break;
 435                 case KTR_STRUCT:
 436                         ktrstruct(m, ktrlen);
 437                         break;
 438                 case KTR_CAPFAIL:
 439                         ktrcapfail((struct ktr_cap_fail *)m);
 440                         break;
 441                 case KTR_FAULT:
 442                         ktrfault((struct ktr_fault *)m);
 443                         break;
 444                 case KTR_FAULTEND:
 445                         ktrfaultend((struct ktr_faultend *)m);
 446                         break;
 447                 default:
 448                         printf("\n");
 449                         break;
 450                 }
 451                 if (tail)
 452                         fflush(stdout);
 453         }
 454         return 0;
 455 }
 456
 457 void
 458 limitfd(int fd)
 459 {
 460         cap_rights_t rights;
 461         unsigned long cmd;
 462
 463         cap_rights_init(&rights, CAP_FSTAT);
 464         cmd = 0;
 465
 466         switch (fd) {
 467         case STDIN_FILENO:
 468                 cap_rights_set(&rights, CAP_READ);
 469                 break;
 470         case STDOUT_FILENO:
 471                 cap_rights_set(&rights, CAP_IOCTL, CAP_WRITE);
 472                 cmd = TIOCGETA; /* required by isatty(3) in printf(3) */
 473                 break;
 474         case STDERR_FILENO:
 475                 cap_rights_set(&rights, CAP_WRITE);
 476                 if (!suppressdata) {
 477                         cap_rights_set(&rights, CAP_IOCTL);
 478                         cmd = TIOCGWINSZ;
 479                 }
 480                 break;
 481         default:
 482                 abort();
 483         }
 484
 485         if (cap_rights_limit(fd, &rights) < 0 && errno != ENOSYS)
 486                 err(1, "unable to limit rights for descriptor %d", fd);
 487         if (cmd != 0 && cap_ioctls_limit(fd, &cmd, 1) < 0 && errno != ENOSYS)
 488                 err(1, "unable to limit ioctls for descriptor %d", fd);
 489 }
 490
 491 int
 492 fread_tail(void *buf, int size, int num)
 493 {
 494         int i;
 495
 496         while ((i = fread(buf, size, num, stdin)) == 0 && tail) {
 497                 sleep(1);
 498                 clearerr(stdin);
 499         }
 500         return (i);
 501 }
 502
 503 int
 504 fetchprocinfo(struct ktr_header *kth, u_int *flags)
 505 {
 506         struct proc_info *pi;
 507
 508         switch (kth->ktr_type) {
 509         case KTR_PROCCTOR:
 510                 TAILQ_FOREACH(pi, &trace_procs, info) {
 511                         if (pi->pid == kth->ktr_pid) {
 512                                 TAILQ_REMOVE(&trace_procs, pi, info);
 513                                 break;
 514                         }
 515                 }
 516                 pi = malloc(sizeof(struct proc_info));
 517                 if (pi == NULL)
 518                         errx(1, "%s", strerror(ENOMEM));
 519                 pi->sv_flags = *flags;
 520                 pi->pid = kth->ktr_pid;
 521                 TAILQ_INSERT_TAIL(&trace_procs, pi, info);
 522                 return (1);
 523
 524         case KTR_PROCDTOR:
 525                 TAILQ_FOREACH(pi, &trace_procs, info) {
 526                         if (pi->pid == kth->ktr_pid) {
 527                                 TAILQ_REMOVE(&trace_procs, pi, info);
 528                                 free(pi);
 529                                 break;
 530                         }
 531                 }
 532                 return (1);
 533         }
 534
 535         return (0);
 536 }
 537
 538 u_int
 539 abidump(struct ktr_header *kth)
 540 {
 541         struct proc_info *pi;
 542         const char *abi;
 543         const char *arch;
 544         u_int flags = 0;
 545
 546         TAILQ_FOREACH(pi, &trace_procs, info) {
 547                 if (pi->pid == kth->ktr_pid) {
 548                         flags = pi->sv_flags;
 549                         break;
 550                 }
 551         }
 552
 553         if (abiflag == 0)
 554                 return (flags);
 555
 556         switch (flags & SV_ABI_MASK) {
 557         case SV_ABI_LINUX:
 558                 abi = "L";
 559                 break;
 560         case SV_ABI_FREEBSD:
 561                 abi = "F";
 562                 break;
 563         default:
 564                 abi = "U";
 565                 break;
 566         }
 567
 568         if (flags != 0) {
 569                 if (flags & SV_LP64)
 570                         arch = "64";
 571                 else
 572                         arch = "32";
 573         } else
 574                 arch = "00";
 575
 576         printf("%s%s  ", abi, arch);
 577
 578         return (flags);
 579 }
 580
 581 void
 582 dumpheader(struct ktr_header *kth)
 583 {
 584         static char unknown[64];
 585         static struct timeval prevtime, prevtime_e, temp;
 586         const char *type;
 587         const char *sign;
 588
 589         switch (kth->ktr_type) {
 590         case KTR_SYSCALL:
 591                 type = "CALL";
 592                 break;
 593         case KTR_SYSRET:
 594                 type = "RET ";
 595                 break;
 596         case KTR_NAMEI:
 597                 type = "NAMI";
 598                 break;
 599         case KTR_GENIO:
 600                 type = "GIO ";
 601                 break;
 602         case KTR_PSIG:
 603                 type = "PSIG";
 604                 break;
 605         case KTR_CSW:
 606                 type = "CSW ";
 607                 break;
 608         case KTR_USER:
 609                 type = "USER";
 610                 break;
 611         case KTR_STRUCT:
 612                 type = "STRU";
 613                 break;
 614         case KTR_SYSCTL:
 615                 type = "SCTL";
 616                 break;
 617         case KTR_PROCCTOR:
 618                 /* FALLTHROUGH */
 619         case KTR_PROCDTOR:
 620                 return;
 621         case KTR_CAPFAIL:
 622                 type = "CAP ";
 623                 break;
 624         case KTR_FAULT:
 625                 type = "PFLT";
 626                 break;
 627         case KTR_FAULTEND:
 628                 type = "PRET";
 629                 break;
 630         default:
 631                 sprintf(unknown, "UNKNOWN(%d)", kth->ktr_type);
 632                 type = unknown;
 633         }
 634
 635         /*
 636          * The ktr_tid field was previously the ktr_buffer field, which held
 637          * the kernel pointer value for the buffer associated with data
 638          * following the record header.  It now holds a threadid, but only
 639          * for trace files after the change.  Older trace files still contain
 640          * kernel pointers.  Detect this and suppress the results by printing
 641          * negative tid's as 0.
 642          */
 643         if (threads)
 644                 printf("%6jd %6jd %-8.*s ", (intmax_t)kth->ktr_pid,
 645                     kth->ktr_tid > 0 ? (intmax_t)kth->ktr_tid : 0,
 646                     MAXCOMLEN, kth->ktr_comm);
 647         else
 648                 printf("%6jd %-8.*s ", (intmax_t)kth->ktr_pid, MAXCOMLEN,
 649                     kth->ktr_comm);
 650         if (timestamp) {
 651                 if (timestamp & TIMESTAMP_ABSOLUTE) {
 652                         printf("%jd.%06ld ", (intmax_t)kth->ktr_time.tv_sec,
 653                             kth->ktr_time.tv_usec);
 654                 }
 655                 if (timestamp & TIMESTAMP_ELAPSED) {
 656                         if (prevtime_e.tv_sec == 0)
 657                                 prevtime_e = kth->ktr_time;
 658                         timevalsub(&kth->ktr_time, &prevtime_e);
 659                         printf("%jd.%06ld ", (intmax_t)kth->ktr_time.tv_sec,
 660                             kth->ktr_time.tv_usec);
 661                         timevaladd(&kth->ktr_time, &prevtime_e);
 662                 }
 663                 if (timestamp & TIMESTAMP_RELATIVE) {
 664                         if (prevtime.tv_sec == 0)
 665                                 prevtime = kth->ktr_time;
 666                         temp = kth->ktr_time;
 667                         timevalsub(&kth->ktr_time, &prevtime);
 668                         if ((intmax_t)kth->ktr_time.tv_sec < 0) {
 669                                 kth->ktr_time = prevtime;
 670                                 prevtime = temp;
 671                                 timevalsub(&kth->ktr_time, &prevtime);
 672                                 sign = "-";
 673                         } else {
 674                                 prevtime = temp;
 675                                 sign = "";
 676                         }
 677                         printf("%s%jd.%06ld ", sign, (intmax_t)kth->ktr_time.tv_sec,
 678                             kth->ktr_time.tv_usec);
 679                 }
 680         }
 681         printf("%s  ", type);
 682 }
 683
 684 #include <sys/syscall.h>
 685 #define KTRACE
 686 #include <sys/kern/syscalls.c>
 687 #undef KTRACE
 688 int nsyscalls = sizeof (syscallnames) / sizeof (syscallnames[0]);
 689
 690 void
 691 ktrsyscall(struct ktr_syscall *ktr, u_int flags)
 692 {
 693         int narg = ktr->ktr_narg;
 694         register_t *ip;
 695         intmax_t arg;
 696
 697         if ((flags != 0 && ((flags & SV_ABI_MASK) != SV_ABI_FREEBSD)) ||
 698             (ktr->ktr_code >= nsyscalls || ktr->ktr_code < 0))
 699                 printf("[%d]", ktr->ktr_code);
 700         else {
 701                 printf("%s", syscallnames[ktr->ktr_code]);
 702                 if (syscallno)
 703                         printf("[%d]", ktr->ktr_code);
 704         }
 705         ip = &ktr->ktr_args[0];
 706         if (narg) {
 707                 char c = '(';
 708                 if (fancy &&
 709                     (flags == 0 || (flags & SV_ABI_MASK) == SV_ABI_FREEBSD)) {
 710                         switch (ktr->ktr_code) {
 711                         case SYS_bindat:
 712                         case SYS_connectat:
 713                         case SYS_faccessat:
 714                         case SYS_fchmodat:
 715                         case SYS_fchownat:
 716                         case SYS_fstatat:
 717                         case SYS_futimesat:
 718                         case SYS_linkat:
 719                         case SYS_mkdirat:
 720                         case SYS_mkfifoat:
 721                         case SYS_mknodat:
 722                         case SYS_openat:
 723                         case SYS_readlinkat:
 724                         case SYS_renameat:
 725                         case SYS_unlinkat:
 726                         case SYS_utimensat:
 727                                 putchar('(');
 728                                 atfdname(*ip, decimal);
 729                                 c = ',';
 730                                 ip++;
 731                                 narg--;
 732                                 break;
 733                         }
 734                         switch (ktr->ktr_code) {
 735                         case SYS_ioctl: {
 736                                 print_number(ip, narg, c);
 737                                 putchar(c);
 738                                 ioctlname(*ip, decimal);
 739                                 c = ',';
 740                                 ip++;
 741                                 narg--;
 742                                 break;
 743                         }
 744                         case SYS_ptrace:
 745                                 putchar('(');
 746                                 ptraceopname(*ip);
 747                                 c = ',';
 748                                 ip++;
 749                                 narg--;
 750                                 break;
 751                         case SYS_access:
 752                         case SYS_eaccess:
 753                         case SYS_faccessat:
 754                                 print_number(ip, narg, c);
 755                                 putchar(',');
 756                                 accessmodename(*ip);
 757                                 ip++;
 758                                 narg--;
 759                                 break;
 760                         case SYS_open:
 761                         case SYS_openat:
 762                                 print_number(ip, narg, c);
 763                                 putchar(',');
 764                                 flagsandmodename(ip[0], ip[1], decimal);
 765                                 ip += 2;
 766                                 narg -= 2;
 767                                 break;
 768                         case SYS_wait4:
 769                                 print_number(ip, narg, c);
 770                                 print_number(ip, narg, c);
 771                                 /*
 772                                  * A flags value of zero is valid for
 773                                  * wait4() but not for wait6(), so
 774                                  * handle zero special here.
 775                                  */
 776                                 if (*ip == 0) {
 777                                         print_number(ip, narg, c);
 778                                 } else {
 779                                         putchar(',');
 780                                         wait6optname(*ip);
 781                                         ip++;
 782                                         narg--;
 783                                 }
 784                                 break;
 785                         case SYS_wait6:
 786                                 putchar('(');
 787                                 idtypename(*ip, decimal);
 788                                 c = ',';
 789                                 ip++;
 790                                 narg--;
 791                                 print_number(ip, narg, c);
 792                                 print_number(ip, narg, c);
 793                                 putchar(',');
 794                                 wait6optname(*ip);
 795                                 ip++;
 796                                 narg--;
 797                                 break;
 798                         case SYS_chmod:
 799                         case SYS_fchmod:
 800                         case SYS_lchmod:
 801                                 print_number(ip, narg, c);
 802                                 putchar(',');
 803                                 modename(*ip);
 804                                 ip++;
 805                                 narg--;
 806                                 break;
 807                         case SYS_mknod:
 808                         case SYS_mknodat:
 809                                 print_number(ip, narg, c);
 810                                 putchar(',');
 811                                 modename(*ip);
 812                                 ip++;
 813                                 narg--;
 814                                 break;
 815                         case SYS_getfsstat:
 816                                 print_number(ip, narg, c);
 817                                 print_number(ip, narg, c);
 818                                 putchar(',');
 819                                 getfsstatflagsname(*ip);
 820                                 ip++;
 821                                 narg--;
 822                                 break;
 823                         case SYS_mount:
 824                                 print_number(ip, narg, c);
 825                                 print_number(ip, narg, c);
 826                                 putchar(',');
 827                                 mountflagsname(*ip);
 828                                 ip++;
 829                                 narg--;
 830                                 break;
 831                         case SYS_unmount:
 832                                 print_number(ip, narg, c);
 833                                 putchar(',');
 834                                 mountflagsname(*ip);
 835                                 ip++;
 836                                 narg--;
 837                                 break;
 838                         case SYS_recvmsg:
 839                         case SYS_sendmsg:
 840                                 print_number(ip, narg, c);
 841                                 print_number(ip, narg, c);
 842                                 putchar(',');
 843                                 sendrecvflagsname(*ip);
 844                                 ip++;
 845                                 narg--;
 846                                 break;
 847                         case SYS_recvfrom:
 848                         case SYS_sendto:
 849                                 print_number(ip, narg, c);
 850                                 print_number(ip, narg, c);
 851                                 print_number(ip, narg, c);
 852                                 putchar(',');
 853                                 sendrecvflagsname(*ip);
 854                                 ip++;
 855                                 narg--;
 856                                 break;
 857                         case SYS_chflags:
 858                         case SYS_fchflags:
 859                         case SYS_lchflags:
 860                                 print_number(ip, narg, c);
 861                                 putchar(',');
 862                                 modename(*ip);
 863                                 ip++;
 864                                 narg--;
 865                                 break;
 866                         case SYS_kill:
 867                                 print_number(ip, narg, c);
 868                                 putchar(',');
 869                                 signame(*ip);
 870                                 ip++;
 871                                 narg--;
 872                                 break;
 873                         case SYS_reboot:
 874                                 putchar('(');
 875                                 rebootoptname(*ip);
 876                                 ip++;
 877                                 narg--;
 878                                 break;
 879                         case SYS_umask:
 880                                 putchar('(');
 881                                 modename(*ip);
 882                                 ip++;
 883                                 narg--;
 884                                 break;
 885                         case SYS_msync:
 886                                 print_number(ip, narg, c);
 887                                 print_number(ip, narg, c);
 888                                 putchar(',');
 889                                 msyncflagsname(*ip);
 890                                 ip++;
 891                                 narg--;
 892                                 break;
 893 #ifdef SYS_freebsd6_mmap
 894                         case SYS_freebsd6_mmap:
 895                                 print_number(ip, narg, c);
 896                                 print_number(ip, narg, c);
 897                                 putchar(',');
 898                                 mmapprotname(*ip);
 899                                 putchar(',');
 900                                 ip++;
 901                                 narg--;
 902                                 mmapflagsname(*ip);
 903                                 ip++;
 904                                 narg--;
 905                                 break;
 906 #endif
 907                         case SYS_mmap:
 908                                 print_number(ip, narg, c);
 909                                 print_number(ip, narg, c);
 910                                 putchar(',');
 911                                 mmapprotname(*ip);
 912                                 putchar(',');
 913                                 ip++;
 914                                 narg--;
 915                                 mmapflagsname(*ip);
 916                                 ip++;
 917                                 narg--;
 918                                 break;
 919                         case SYS_mprotect:
 920                                 print_number(ip, narg, c);
 921                                 print_number(ip, narg, c);
 922                                 putchar(',');
 923                                 mmapprotname(*ip);
 924                                 ip++;
 925                                 narg--;
 926                                 break;
 927                         case SYS_madvise:
 928                                 print_number(ip, narg, c);
 929                                 print_number(ip, narg, c);
 930                                 putchar(',');
 931                                 madvisebehavname(*ip);
 932                                 ip++;
 933                                 narg--;
 934                                 break;
 935                         case SYS_setpriority:
 936                                 print_number(ip, narg, c);
 937                                 print_number(ip, narg, c);
 938                                 putchar(',');
 939                                 prioname(*ip);
 940                                 ip++;
 941                                 narg--;
 942                                 break;
 943                         case SYS_fcntl:
 944                                 print_number(ip, narg, c);
 945                                 putchar(',');
 946                                 fcntlcmdname(ip[0], ip[1], decimal);
 947                                 ip += 2;
 948                                 narg -= 2;
 949                                 break;
 950                         case SYS_socket: {
 951                                 int sockdomain;
 952                                 putchar('(');
 953                                 sockdomain = *ip;
 954                                 sockdomainname(sockdomain);
 955                                 ip++;
 956                                 narg--;
 957                                 putchar(',');
 958                                 socktypenamewithflags(*ip);
 959                                 ip++;
 960                                 narg--;
 961                                 if (sockdomain == PF_INET ||
 962                                     sockdomain == PF_INET6) {
 963                                         putchar(',');
 964                                         sockipprotoname(*ip);
 965                                         ip++;
 966                                         narg--;
 967                                 }
 968                                 c = ',';
 969                                 break;
 970                         }
 971                         case SYS_setsockopt:
 972                         case SYS_getsockopt:
 973                                 print_number(ip, narg, c);
 974                                 putchar(',');
 975                                 sockoptlevelname(*ip, decimal);
 976                                 if (*ip == SOL_SOCKET) {
 977                                         ip++;
 978                                         narg--;
 979                                         putchar(',');
 980                                         sockoptname(*ip);
 981                                 }
 982                                 ip++;
 983                                 narg--;
 984                                 break;
 985 #ifdef SYS_freebsd6_lseek
 986                         case SYS_freebsd6_lseek:
 987                                 print_number(ip, narg, c);
 988                                 /* Hidden 'pad' argument, not in lseek(2) */
 989                                 print_number(ip, narg, c);
 990                                 print_number(ip, narg, c);
 991                                 putchar(',');
 992                                 whencename(*ip);
 993                                 ip++;
 994                                 narg--;
 995                                 break;
 996 #endif
 997                         case SYS_lseek:
 998                                 print_number(ip, narg, c);
 999                                 /* Hidden 'pad' argument, not in lseek(2) */
1000                                 print_number(ip, narg, c);
1001                                 putchar(',');
1002                                 whencename(*ip);
1003                                 ip++;
1004                                 narg--;
1005                                 break;
1006                         case SYS_flock:
1007                                 print_number(ip, narg, c);
1008                                 putchar(',');
1009                                 flockname(*ip);
1010                                 ip++;
1011                                 narg--;
1012                                 break;
1013                         case SYS_mkfifo:
1014                         case SYS_mkfifoat:
1015                         case SYS_mkdir:
1016                         case SYS_mkdirat:
1017                                 print_number(ip, narg, c);
1018                                 putchar(',');
1019                                 modename(*ip);
1020                                 ip++;
1021                                 narg--;
1022                                 break;
1023                         case SYS_shutdown:
1024                                 print_number(ip, narg, c);
1025                                 putchar(',');
1026                                 shutdownhowname(*ip);
1027                                 ip++;
1028                                 narg--;
1029                                 break;
1030                         case SYS_socketpair:
1031                                 putchar('(');
1032                                 sockdomainname(*ip);
1033                                 ip++;
1034                                 narg--;
1035                                 putchar(',');
1036                                 socktypenamewithflags(*ip);
1037                                 ip++;
1038                                 narg--;
1039                                 c = ',';
1040                                 break;
1041                         case SYS_getrlimit:
1042                         case SYS_setrlimit:
1043                                 putchar('(');
1044                                 rlimitname(*ip);
1045                                 ip++;
1046                                 narg--;
1047                                 c = ',';
1048                                 break;
1049                         case SYS_quotactl:
1050                                 print_number(ip, narg, c);
1051                                 putchar(',');
1052                                 quotactlname(*ip);
1053                                 ip++;
1054                                 narg--;
1055                                 c = ',';
1056                                 break;
1057                         case SYS_nfssvc:
1058                                 putchar('(');
1059                                 nfssvcname(*ip);
1060                                 ip++;
1061                                 narg--;
1062                                 c = ',';
1063                                 break;
1064                         case SYS_rtprio:
1065                                 putchar('(');
1066                                 rtprioname(*ip);
1067                                 ip++;
1068                                 narg--;
1069                                 c = ',';
1070                                 break;
1071                         case SYS___semctl:
1072                                 print_number(ip, narg, c);
1073                                 print_number(ip, narg, c);
1074                                 putchar(',');
1075                                 semctlname(*ip);
1076                                 ip++;
1077                                 narg--;
1078                                 break;
1079                         case SYS_semget:
1080                                 print_number(ip, narg, c);
1081                                 print_number(ip, narg, c);
1082                                 putchar(',');
1083                                 semgetname(*ip);
1084                                 ip++;
1085                                 narg--;
1086                                 break;
1087                         case SYS_msgctl:
1088                                 print_number(ip, narg, c);
1089                                 putchar(',');
1090                                 shmctlname(*ip);
1091                                 ip++;
1092                                 narg--;
1093                                 break;
1094                         case SYS_shmat:
1095                                 print_number(ip, narg, c);
1096                                 print_number(ip, narg, c);
1097                                 putchar(',');
1098                                 shmatname(*ip);
1099                                 ip++;
1100                                 narg--;
1101                                 break;
1102                         case SYS_shmctl:
1103                                 print_number(ip, narg, c);
1104                                 putchar(',');
1105                                 shmctlname(*ip);
1106                                 ip++;
1107                                 narg--;
1108                                 break;
1109                         case SYS_shm_open:
1110                                 print_number(ip, narg, c);
1111                                 putchar(',');
1112                                 flagsname(ip[0]);
1113                                 printf(",0%o", (unsigned int)ip[1]);
1114                                 ip += 3;
1115                                 narg -= 3;
1116                                 break;
1117                         case SYS_minherit:
1118                                 print_number(ip, narg, c);
1119                                 print_number(ip, narg, c);
1120                                 putchar(',');
1121                                 minheritname(*ip);
1122                                 ip++;
1123                                 narg--;
1124                                 break;
1125                         case SYS_rfork:
1126                                 putchar('(');
1127                                 rforkname(*ip);
1128                                 ip++;
1129                                 narg--;
1130                                 c = ',';
1131                                 break;
1132                         case SYS_lio_listio:
1133                                 putchar('(');
1134                                 lio_listioname(*ip);
1135                                 ip++;
1136                                 narg--;
1137                                 c = ',';
1138                                 break;
1139                         case SYS_mlockall:
1140                                 putchar('(');
1141                                 mlockallname(*ip);
1142                                 ip++;
1143                                 narg--;
1144                                 break;
1145                         case SYS_sched_setscheduler:
1146                                 print_number(ip, narg, c);
1147                                 putchar(',');
1148                                 schedpolicyname(*ip);
1149                                 ip++;
1150                                 narg--;
1151                                 break;
1152                         case SYS_sched_get_priority_max:
1153                         case SYS_sched_get_priority_min:
1154                                 putchar('(');
1155                                 schedpolicyname(*ip);
1156                                 ip++;
1157                                 narg--;
1158                                 break;
1159                         case SYS_sendfile:
1160                                 print_number(ip, narg, c);
1161                                 print_number(ip, narg, c);
1162                                 print_number(ip, narg, c);
1163                                 print_number(ip, narg, c);
1164                                 print_number(ip, narg, c);
1165                                 print_number(ip, narg, c);
1166                                 putchar(',');
1167                                 sendfileflagsname(*(int *)ip);
1168                                 ip++;
1169                                 narg--;
1170                                 break;
1171                         case SYS_kldsym:
1172                                 print_number(ip, narg, c);
1173                                 putchar(',');
1174                                 kldsymcmdname(*ip);
1175                                 ip++;
1176                                 narg--;
1177                                 break;
1178                         case SYS_sigprocmask:
1179                                 putchar('(');
1180                                 sigprocmaskhowname(*ip);
1181                                 ip++;
1182                                 narg--;
1183                                 c = ',';
1184                                 break;
1185                         case SYS___acl_get_file:
1186                         case SYS___acl_set_file:
1187                         case SYS___acl_get_fd:
1188                         case SYS___acl_set_fd:
1189                         case SYS___acl_delete_file:
1190                         case SYS___acl_delete_fd:
1191                         case SYS___acl_aclcheck_file:
1192                         case SYS___acl_aclcheck_fd:
1193                         case SYS___acl_get_link:
1194                         case SYS___acl_set_link:
1195                         case SYS___acl_delete_link:
1196                         case SYS___acl_aclcheck_link:
1197                                 print_number(ip, narg, c);
1198                                 putchar(',');
1199                                 acltypename(*ip);
1200                                 ip++;
1201                                 narg--;
1202                                 break;
1203                         case SYS_sigaction:
1204                                 putchar('(');
1205                                 signame(*ip);
1206                                 ip++;
1207                                 narg--;
1208                                 c = ',';
1209                                 break;
1210                         case SYS_extattrctl:
1211                                 print_number(ip, narg, c);
1212                                 putchar(',');
1213                                 extattrctlname(*ip);
1214                                 ip++;
1215                                 narg--;
1216                                 break;
1217                         case SYS_nmount:
1218                                 print_number(ip, narg, c);
1219                                 print_number(ip, narg, c);
1220                                 putchar(',');
1221                                 mountflagsname(*ip);
1222                                 ip++;
1223                                 narg--;
1224                                 break;
1225                         case SYS_thr_create:
1226                                 print_number(ip, narg, c);
1227                                 print_number(ip, narg, c);
1228                                 putchar(',');
1229                                 thrcreateflagsname(*ip);
1230                                 ip++;
1231                                 narg--;
1232                                 break;
1233                         case SYS_thr_kill:
1234                                 print_number(ip, narg, c);
1235                                 putchar(',');
1236                                 signame(*ip);
1237                                 ip++;
1238                                 narg--;
1239                                 break;
1240                         case SYS_kldunloadf:
1241                                 print_number(ip, narg, c);
1242                                 putchar(',');
1243                                 kldunloadfflagsname(*ip);
1244                                 ip++;
1245                                 narg--;
1246                                 break;
1247                         case SYS_linkat:
1248                         case SYS_renameat:
1249                         case SYS_symlinkat:
1250                                 print_number(ip, narg, c);
1251                                 putchar(',');
1252                                 atfdname(*ip, decimal);
1253                                 ip++;
1254                                 narg--;
1255                                 break;
1256                         case SYS_cap_fcntls_limit:
1257                                 print_number(ip, narg, c);
1258                                 putchar(',');
1259                                 arg = *ip;
1260                                 ip++;
1261                                 narg--;
1262                                 capfcntlname(arg);
1263                                 break;
1264                         case SYS_posix_fadvise:
1265                                 print_number(ip, narg, c);
1266                                 print_number(ip, narg, c);
1267                                 print_number(ip, narg, c);
1268                                 (void)putchar(',');
1269                                 fadvisebehavname((int)*ip);
1270                                 ip++;
1271                                 narg--;
1272                                 break;
1273                         case SYS_procctl:
1274                                 putchar('(');
1275                                 idtypename(*ip, decimal);
1276                                 c = ',';
1277                                 ip++;
1278                                 narg--;
1279                                 print_number(ip, narg, c);
1280                                 putchar(',');
1281                                 procctlcmdname(*ip);
1282                                 ip++;
1283                                 narg--;
1284                                 break;
1285                         case SYS__umtx_op:
1286                                 print_number(ip, narg, c);
1287                                 putchar(',');
1288                                 umtxopname(*ip);
1289                                 switch (*ip) {
1290                                 case UMTX_OP_CV_WAIT:
1291                                         ip++;
1292                                         narg--;
1293                                         putchar(',');
1294                                         umtxcvwaitflags(*ip);
1295                                         break;
1296                                 case UMTX_OP_RW_RDLOCK:
1297                                         ip++;
1298                                         narg--;
1299                                         putchar(',');
1300                                         umtxrwlockflags(*ip);
1301                                         break;
1302                                 }
1303                                 ip++;
1304                                 narg--;
1305                         }
1306                 }
1307                 while (narg > 0) {
1308                         print_number(ip, narg, c);
1309                 }
1310                 putchar(')');
1311         }
1312         putchar('\n');
1313 }
1314
1315 void
1316 ktrsysret(struct ktr_sysret *ktr, u_int flags)
1317 {
1318         register_t ret = ktr->ktr_retval;
1319         int error = ktr->ktr_error;
1320         int code = ktr->ktr_code;
1321
1322         if ((flags != 0 && ((flags & SV_ABI_MASK) != SV_ABI_FREEBSD)) ||
1323             (code >= nsyscalls || code < 0))
1324                 printf("[%d] ", code);
1325         else {
1326                 printf("%s", syscallnames[code]);
1327                 if (syscallno)
1328                         printf("[%d]", code);
1329                 printf(" ");
1330         }
1331
1332         if (error == 0) {
1333                 if (fancy) {
1334                         printf("%ld", (long)ret);
1335                         if (ret < 0 || ret > 9)
1336                                 printf("/%#lx", (unsigned long)ret);
1337                 } else {
1338                         if (decimal)
1339                                 printf("%ld", (long)ret);
1340                         else
1341                                 printf("%#lx", (unsigned long)ret);
1342                 }
1343         } else if (error == ERESTART)
1344                 printf("RESTART");
1345         else if (error == EJUSTRETURN)
1346                 printf("JUSTRETURN");
1347         else {
1348                 printf("-1 errno %d", ktr->ktr_error);
1349                 if (fancy)
1350                         printf(" %s", strerror(ktr->ktr_error));
1351         }
1352         putchar('\n');
1353 }
1354
1355 void
1356 ktrnamei(char *cp, int len)
1357 {
1358         printf("\"%.*s\"\n", len, cp);
1359 }
1360
1361 void
1362 hexdump(char *p, int len, int screenwidth)
1363 {
1364         int n, i;
1365         int width;
1366
1367         width = 0;
1368         do {
1369                 width += 2;
1370                 i = 13;                 /* base offset */
1371                 i += (width / 2) + 1;   /* spaces every second byte */
1372                 i += (width * 2);       /* width of bytes */
1373                 i += 3;                 /* "  |" */
1374                 i += width;             /* each byte */
1375                 i += 1;                 /* "|" */
1376         } while (i < screenwidth);
1377         width -= 2;
1378
1379         for (n = 0; n < len; n += width) {
1380                 for (i = n; i < n + width; i++) {
1381                         if ((i % width) == 0) { /* beginning of line */
1382                                 printf("       0x%04x", i);
1383                         }
1384                         if ((i % 2) == 0) {
1385                                 printf(" ");
1386                         }
1387                         if (i < len)
1388                                 printf("%02x", p[i] & 0xff);
1389                         else
1390                                 printf("  ");
1391                 }
1392                 printf("  |");
1393                 for (i = n; i < n + width; i++) {
1394                         if (i >= len)
1395                                 break;
1396                         if (p[i] >= ' ' && p[i] <= '~')
1397                                 printf("%c", p[i]);
1398                         else
1399                                 printf(".");
1400                 }
1401                 printf("|\n");
1402         }
1403         if ((i % width) != 0)
1404                 printf("\n");
1405 }
1406
1407 void
1408 visdump(char *dp, int datalen, int screenwidth)
1409 {
1410         int col = 0;
1411         char *cp;
1412         int width;
1413         char visbuf[5];
1414
1415         printf("       \"");
1416         col = 8;
1417         for (;datalen > 0; datalen--, dp++) {
1418                  vis(visbuf, *dp, VIS_CSTYLE, *(dp+1));
1419                 cp = visbuf;
1420                 /*
1421                  * Keep track of printables and
1422                  * space chars (like fold(1)).
1423                  */
1424                 if (col == 0) {
1425                         putchar('\t');
1426                         col = 8;
1427                 }
1428                 switch(*cp) {
1429                 case '\n':
1430                         col = 0;
1431                         putchar('\n');
1432                         continue;
1433                 case '\t':
1434                         width = 8 - (col&07);
1435                         break;
1436                 default:
1437                         width = strlen(cp);
1438                 }
1439                 if (col + width > (screenwidth-2)) {
1440                         printf("\\\n\t");
1441                         col = 8;
1442                 }
1443                 col += width;
1444                 do {
1445                         putchar(*cp++);
1446                 } while (*cp);
1447         }
1448         if (col == 0)
1449                 printf("       ");
1450         printf("\"\n");
1451 }
1452
1453 void
1454 ktrgenio(struct ktr_genio *ktr, int len)
1455 {
1456         int datalen = len - sizeof (struct ktr_genio);
1457         char *dp = (char *)ktr + sizeof (struct ktr_genio);
1458         static int screenwidth = 0;
1459         int i, binary;
1460
1461         printf("fd %d %s %d byte%s\n", ktr->ktr_fd,
1462                 ktr->ktr_rw == UIO_READ ? "read" : "wrote", datalen,
1463                 datalen == 1 ? "" : "s");
1464         if (suppressdata)
1465                 return;
1466         if (screenwidth == 0) {
1467                 struct winsize ws;
1468
1469                 if (fancy && ioctl(fileno(stderr), TIOCGWINSZ, &ws) != -1 &&
1470                     ws.ws_col > 8)
1471                         screenwidth = ws.ws_col;
1472                 else
1473                         screenwidth = 80;
1474         }
1475         if (maxdata && datalen > maxdata)
1476                 datalen = maxdata;
1477
1478         for (i = 0, binary = 0; i < datalen && binary == 0; i++)  {
1479                 if (dp[i] >= 32 && dp[i] < 127)
1480                         continue;
1481                 if (dp[i] == 10 || dp[i] == 13 || dp[i] == 0 || dp[i] == 9)
1482                         continue;
1483                 binary = 1;
1484         }
1485         if (binary)
1486                 hexdump(dp, datalen, screenwidth);
1487         else
1488                 visdump(dp, datalen, screenwidth);
1489 }
1490
1491 const char *signames[] = {
1492         "NULL", "HUP", "INT", "QUIT", "ILL", "TRAP", "IOT",     /*  1 - 6  */
1493         "EMT", "FPE", "KILL", "BUS", "SEGV", "SYS",             /*  7 - 12 */
1494         "PIPE", "ALRM",  "TERM", "URG", "STOP", "TSTP",         /* 13 - 18 */
1495         "CONT", "CHLD", "TTIN", "TTOU", "IO", "XCPU",           /* 19 - 24 */
1496         "XFSZ", "VTALRM", "PROF", "WINCH", "29", "USR1",        /* 25 - 30 */
1497         "USR2", NULL,                                           /* 31 - 32 */
1498 };
1499
1500 void
1501 ktrpsig(struct ktr_psig *psig)
1502 {
1503         if (psig->signo > 0 && psig->signo < NSIG)
1504                 printf("SIG%s ", signames[psig->signo]);
1505         else
1506                 printf("SIG %d ", psig->signo);
1507         if (psig->action == SIG_DFL) {
1508                 printf("SIG_DFL code=");
1509                 sigcodename(psig->signo, psig->code);
1510                 putchar('\n');
1511         } else {
1512                 printf("caught handler=0x%lx mask=0x%x code=",
1513                     (u_long)psig->action, psig->mask.__bits[0]);
1514                 sigcodename(psig->signo, psig->code);
1515                 putchar('\n');
1516         }
1517 }
1518
1519 void
1520 ktrcsw_old(struct ktr_csw_old *cs)
1521 {
1522         printf("%s %s\n", cs->out ? "stop" : "resume",
1523                 cs->user ? "user" : "kernel");
1524 }
1525
1526 void
1527 ktrcsw(struct ktr_csw *cs)
1528 {
1529         printf("%s %s \"%s\"\n", cs->out ? "stop" : "resume",
1530             cs->user ? "user" : "kernel", cs->wmesg);
1531 }
1532
1533 #define UTRACE_DLOPEN_START             1
1534 #define UTRACE_DLOPEN_STOP              2
1535 #define UTRACE_DLCLOSE_START            3
1536 #define UTRACE_DLCLOSE_STOP             4
1537 #define UTRACE_LOAD_OBJECT              5
1538 #define UTRACE_UNLOAD_OBJECT            6
1539 #define UTRACE_ADD_RUNDEP               7
1540 #define UTRACE_PRELOAD_FINISHED         8
1541 #define UTRACE_INIT_CALL                9
1542 #define UTRACE_FINI_CALL                10
1543 #define UTRACE_DLSYM_START              11
1544 #define UTRACE_DLSYM_STOP               12
1545
1546 struct utrace_rtld {
1547         char sig[4];                            /* 'RTLD' */
1548         int event;
1549         void *handle;
1550         void *mapbase;
1551         size_t mapsize;
1552         int refcnt;
1553         char name[MAXPATHLEN];
1554 };
1555
1556 void
1557 ktruser_rtld(int len, void *p)
1558 {
1559         struct utrace_rtld *ut = p;
1560         unsigned char *cp;
1561         void *parent;
1562         int mode;
1563
1564         switch (ut->event) {
1565         case UTRACE_DLOPEN_START:
1566                 mode = ut->refcnt;
1567                 printf("dlopen(%s, ", ut->name);
1568                 switch (mode & RTLD_MODEMASK) {
1569                 case RTLD_NOW:
1570                         printf("RTLD_NOW");
1571                         break;
1572                 case RTLD_LAZY:
1573                         printf("RTLD_LAZY");
1574                         break;
1575                 default:
1576                         printf("%#x", mode & RTLD_MODEMASK);
1577                 }
1578                 if (mode & RTLD_GLOBAL)
1579                         printf(" | RTLD_GLOBAL");
1580                 if (mode & RTLD_TRACE)
1581                         printf(" | RTLD_TRACE");
1582                 if (mode & ~(RTLD_MODEMASK | RTLD_GLOBAL | RTLD_TRACE))
1583                         printf(" | %#x", mode &
1584                             ~(RTLD_MODEMASK | RTLD_GLOBAL | RTLD_TRACE));
1585                 printf(")\n");
1586                 break;
1587         case UTRACE_DLOPEN_STOP:
1588                 printf("%p = dlopen(%s) ref %d\n", ut->handle, ut->name,
1589                     ut->refcnt);
1590                 break;
1591         case UTRACE_DLCLOSE_START:
1592                 printf("dlclose(%p) (%s, %d)\n", ut->handle, ut->name,
1593                     ut->refcnt);
1594                 break;
1595         case UTRACE_DLCLOSE_STOP:
1596                 printf("dlclose(%p) finished\n", ut->handle);
1597                 break;
1598         case UTRACE_LOAD_OBJECT:
1599                 printf("RTLD: loaded   %p @ %p - %p (%s)\n", ut->handle,
1600                     ut->mapbase, (char *)ut->mapbase + ut->mapsize - 1,
1601                     ut->name);
1602                 break;
1603         case UTRACE_UNLOAD_OBJECT:
1604                 printf("RTLD: unloaded %p @ %p - %p (%s)\n", ut->handle,
1605                     ut->mapbase, (char *)ut->mapbase + ut->mapsize - 1,
1606                     ut->name);
1607                 break;
1608         case UTRACE_ADD_RUNDEP:
1609                 parent = ut->mapbase;
1610                 printf("RTLD: %p now depends on %p (%s, %d)\n", parent,
1611                     ut->handle, ut->name, ut->refcnt);
1612                 break;
1613         case UTRACE_PRELOAD_FINISHED:
1614                 printf("RTLD: LD_PRELOAD finished\n");
1615                 break;
1616         case UTRACE_INIT_CALL:
1617                 printf("RTLD: init %p for %p (%s)\n", ut->mapbase, ut->handle,
1618                     ut->name);
1619                 break;
1620         case UTRACE_FINI_CALL:
1621                 printf("RTLD: fini %p for %p (%s)\n", ut->mapbase, ut->handle,
1622                     ut->name);
1623                 break;
1624         case UTRACE_DLSYM_START:
1625                 printf("RTLD: dlsym(%p, %s)\n", ut->handle, ut->name);
1626                 break;
1627         case UTRACE_DLSYM_STOP:
1628                 printf("RTLD: %p = dlsym(%p, %s)\n", ut->mapbase, ut->handle,
1629                     ut->name);
1630                 break;
1631         default:
1632                 cp = p;
1633                 cp += 4;
1634                 len -= 4;
1635                 printf("RTLD: %d ", len);
1636                 while (len--)
1637                         if (decimal)
1638                                 printf(" %d", *cp++);
1639                         else
1640                                 printf(" %02x", *cp++);
1641                 printf("\n");
1642         }
1643 }
1644
1645 struct utrace_malloc {
1646         void *p;
1647         size_t s;
1648         void *r;
1649 };
1650
1651 void
1652 ktruser_malloc(void *p)
1653 {
1654         struct utrace_malloc *ut = p;
1655
1656         if (ut->p == (void *)(intptr_t)(-1))
1657                 printf("malloc_init()\n");
1658         else if (ut->s == 0)
1659                 printf("free(%p)\n", ut->p);
1660         else if (ut->p == NULL)
1661                 printf("%p = malloc(%zu)\n", ut->r, ut->s);
1662         else
1663                 printf("%p = realloc(%p, %zu)\n", ut->r, ut->p, ut->s);
1664 }
1665
1666 void
1667 ktruser(int len, void *p)
1668 {
1669         unsigned char *cp;
1670
1671         if (len >= 8 && bcmp(p, "RTLD", 4) == 0) {
1672                 ktruser_rtld(len, p);
1673                 return;
1674         }
1675
1676         if (len == sizeof(struct utrace_malloc)) {
1677                 ktruser_malloc(p);
1678                 return;
1679         }
1680
1681         printf("%d ", len);
1682         cp = p;
1683         while (len--)
1684                 if (decimal)
1685                         printf(" %d", *cp++);
1686                 else
1687                         printf(" %02x", *cp++);
1688         printf("\n");
1689 }
1690
1691 void
1692 ktrcaprights(cap_rights_t *rightsp)
1693 {
1694
1695         printf("cap_rights_t ");
1696         capname(rightsp);
1697         printf("\n");
1698 }
1699
1700 void
1701 ktrsockaddr(struct sockaddr *sa)
1702 {
1703 /*
1704  TODO: Support additional address families
1705         #include <netnatm/natm.h>
1706         struct sockaddr_natm    *natm;
1707         #include <netsmb/netbios.h>
1708         struct sockaddr_nb      *nb;
1709 */
1710         char addr[64];
1711
1712         /*
1713          * note: ktrstruct() has already verified that sa points to a
1714          * buffer at least sizeof(struct sockaddr) bytes long and exactly
1715          * sa->sa_len bytes long.
1716          */
1717         printf("struct sockaddr { ");
1718         sockfamilyname(sa->sa_family);
1719         printf(", ");
1720
1721 #define check_sockaddr_len(n)                                   \
1722         if (sa_##n.s##n##_len < sizeof(struct sockaddr_##n)) {  \
1723                 printf("invalid");                              \
1724                 break;                                          \
1725         }
1726
1727         switch(sa->sa_family) {
1728         case AF_INET: {
1729                 struct sockaddr_in sa_in;
1730
1731                 memset(&sa_in, 0, sizeof(sa_in));
1732                 memcpy(&sa_in, sa, sa->sa_len);
1733                 check_sockaddr_len(in);
1734                 inet_ntop(AF_INET, &sa_in.sin_addr, addr, sizeof addr);
1735                 printf("%s:%u", addr, ntohs(sa_in.sin_port));
1736                 break;
1737         }
1738         case AF_INET6: {
1739                 struct sockaddr_in6 sa_in6;
1740
1741                 memset(&sa_in6, 0, sizeof(sa_in6));
1742                 memcpy(&sa_in6, sa, sa->sa_len);
1743                 check_sockaddr_len(in6);
1744                 getnameinfo((struct sockaddr *)&sa_in6, sizeof(sa_in6),
1745                     addr, sizeof(addr), NULL, 0, NI_NUMERICHOST);
1746                 printf("[%s]:%u", addr, htons(sa_in6.sin6_port));
1747                 break;
1748         }
1749         case AF_UNIX: {
1750                 struct sockaddr_un sa_un;
1751
1752                 memset(&sa_un, 0, sizeof(sa_un));
1753                 memcpy(&sa_un, sa, sa->sa_len);
1754                 printf("%.*s", (int)sizeof(sa_un.sun_path), sa_un.sun_path);
1755                 break;
1756         }
1757         default:
1758                 printf("unknown address family");
1759         }
1760         printf(" }\n");
1761 }
1762
1763 void
1764 ktrstat(struct stat *statp)
1765 {
1766         char mode[12], timestr[PATH_MAX + 4];
1767         struct passwd *pwd;
1768         struct group  *grp;
1769         struct tm *tm;
1770
1771         /*
1772          * note: ktrstruct() has already verified that statp points to a
1773          * buffer exactly sizeof(struct stat) bytes long.
1774          */
1775         printf("struct stat {");
1776         printf("dev=%ju, ino=%ju, ",
1777                 (uintmax_t)statp->st_dev, (uintmax_t)statp->st_ino);
1778         if (resolv == 0)
1779                 printf("mode=0%jo, ", (uintmax_t)statp->st_mode);
1780         else {
1781                 strmode(statp->st_mode, mode);
1782                 printf("mode=%s, ", mode);
1783         }
1784         printf("nlink=%ju, ", (uintmax_t)statp->st_nlink);
1785         if (resolv == 0) {
1786                 pwd = NULL;
1787         } else {
1788 #ifdef HAVE_LIBCAPSICUM
1789                 if (cappwd != NULL)
1790                         pwd = cap_getpwuid(cappwd, statp->st_uid);
1791                 else
1792 #endif
1793                         pwd = getpwuid(statp->st_uid);
1794         }
1795         if (pwd == NULL)
1796                 printf("uid=%ju, ", (uintmax_t)statp->st_uid);
1797         else
1798                 printf("uid=\"%s\", ", pwd->pw_name);
1799         if (resolv == 0) {
1800                 grp = NULL;
1801         } else {
1802 #ifdef HAVE_LIBCAPSICUM
1803                 if (capgrp != NULL)
1804                         grp = cap_getgrgid(capgrp, statp->st_gid);
1805                 else
1806 #endif
1807                         grp = getgrgid(statp->st_gid);
1808         }
1809         if (grp == NULL)
1810                 printf("gid=%ju, ", (uintmax_t)statp->st_gid);
1811         else
1812                 printf("gid=\"%s\", ", grp->gr_name);
1813         printf("rdev=%ju, ", (uintmax_t)statp->st_rdev);
1814         printf("atime=");
1815         if (resolv == 0)
1816                 printf("%jd", (intmax_t)statp->st_atim.tv_sec);
1817         else {
1818                 tm = localtime(&statp->st_atim.tv_sec);
1819                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1820                 printf("\"%s\"", timestr);
1821         }
1822         if (statp->st_atim.tv_nsec != 0)
1823                 printf(".%09ld, ", statp->st_atim.tv_nsec);
1824         else
1825                 printf(", ");
1826         printf("stime=");
1827         if (resolv == 0)
1828                 printf("%jd", (intmax_t)statp->st_mtim.tv_sec);
1829         else {
1830                 tm = localtime(&statp->st_mtim.tv_sec);
1831                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1832                 printf("\"%s\"", timestr);
1833         }
1834         if (statp->st_mtim.tv_nsec != 0)
1835                 printf(".%09ld, ", statp->st_mtim.tv_nsec);
1836         else
1837                 printf(", ");
1838         printf("ctime=");
1839         if (resolv == 0)
1840                 printf("%jd", (intmax_t)statp->st_ctim.tv_sec);
1841         else {
1842                 tm = localtime(&statp->st_ctim.tv_sec);
1843                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1844                 printf("\"%s\"", timestr);
1845         }
1846         if (statp->st_ctim.tv_nsec != 0)
1847                 printf(".%09ld, ", statp->st_ctim.tv_nsec);
1848         else
1849                 printf(", ");
1850         printf("birthtime=");
1851         if (resolv == 0)
1852                 printf("%jd", (intmax_t)statp->st_birthtim.tv_sec);
1853         else {
1854                 tm = localtime(&statp->st_birthtim.tv_sec);
1855                 strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1856                 printf("\"%s\"", timestr);
1857         }
1858         if (statp->st_birthtim.tv_nsec != 0)
1859                 printf(".%09ld, ", statp->st_birthtim.tv_nsec);
1860         else
1861                 printf(", ");
1862         printf("size=%jd, blksize=%ju, blocks=%jd, flags=0x%x",
1863                 (uintmax_t)statp->st_size, (uintmax_t)statp->st_blksize,
1864                 (intmax_t)statp->st_blocks, statp->st_flags);
1865         printf(" }\n");
1866 }
1867
1868 void
1869 ktrstruct(char *buf, size_t buflen)
1870 {
1871         char *name, *data;
1872         size_t namelen, datalen;
1873         int i;
1874         cap_rights_t rights;
1875         struct stat sb;
1876         struct sockaddr_storage ss;
1877
1878         for (name = buf, namelen = 0;
1879              namelen < buflen && name[namelen] != '\0';
1880              ++namelen)
1881                 /* nothing */;
1882         if (namelen == buflen)
1883                 goto invalid;
1884         if (name[namelen] != '\0')
1885                 goto invalid;
1886         data = buf + namelen + 1;
1887         datalen = buflen - namelen - 1;
1888         if (datalen == 0)
1889                 goto invalid;
1890         /* sanity check */
1891         for (i = 0; i < (int)namelen; ++i)
1892                 if (!isalpha(name[i]))
1893                         goto invalid;
1894         if (strcmp(name, "caprights") == 0) {
1895                 if (datalen != sizeof(cap_rights_t))
1896                         goto invalid;
1897                 memcpy(&rights, data, datalen);
1898                 ktrcaprights(&rights);
1899         } else if (strcmp(name, "stat") == 0) {
1900                 if (datalen != sizeof(struct stat))
1901                         goto invalid;
1902                 memcpy(&sb, data, datalen);
1903                 ktrstat(&sb);
1904         } else if (strcmp(name, "sockaddr") == 0) {
1905                 if (datalen > sizeof(ss))
1906                         goto invalid;
1907                 memcpy(&ss, data, datalen);
1908                 if (datalen != ss.ss_len)
1909                         goto invalid;
1910                 ktrsockaddr((struct sockaddr *)&ss);
1911         } else {
1912                 printf("unknown structure\n");
1913         }
1914         return;
1915 invalid:
1916         printf("invalid record\n");
1917 }
1918
1919 void
1920 ktrcapfail(struct ktr_cap_fail *ktr)
1921 {
1922         switch (ktr->cap_type) {
1923         case CAPFAIL_NOTCAPABLE:
1924                 /* operation on fd with insufficient capabilities */
1925                 printf("operation requires ");
1926                 capname(&ktr->cap_needed);
1927                 printf(", descriptor holds ");
1928                 capname(&ktr->cap_held);
1929                 break;
1930         case CAPFAIL_INCREASE:
1931                 /* requested more capabilities than fd already has */
1932                 printf("attempt to increase capabilities from ");
1933                 capname(&ktr->cap_held);
1934                 printf(" to ");
1935                 capname(&ktr->cap_needed);
1936                 break;
1937         case CAPFAIL_SYSCALL:
1938                 /* called restricted syscall */
1939                 printf("disallowed system call");
1940                 break;
1941         case CAPFAIL_LOOKUP:
1942                 /* used ".." in strict-relative mode */
1943                 printf("restricted VFS lookup");
1944                 break;
1945         default:
1946                 printf("unknown capability failure: ");
1947                 capname(&ktr->cap_needed);
1948                 printf(" ");
1949                 capname(&ktr->cap_held);
1950                 break;
1951         }
1952         printf("\n");
1953 }
1954
1955 void
1956 ktrfault(struct ktr_fault *ktr)
1957 {
1958
1959         printf("0x%jx ", (uintmax_t)ktr->vaddr);
1960         vmprotname(ktr->type);
1961         printf("\n");
1962 }
1963
1964 void
1965 ktrfaultend(struct ktr_faultend *ktr)
1966 {
1967
1968         vmresultname(ktr->result);
1969         printf("\n");
1970 }
1971
1972 #if defined(__amd64__) || defined(__i386__)
1973 void
1974 linux_ktrsyscall(struct ktr_syscall *ktr)
1975 {
1976         int narg = ktr->ktr_narg;
1977         register_t *ip;
1978
1979         if (ktr->ktr_code >= nlinux_syscalls || ktr->ktr_code < 0)
1980                 printf("[%d]", ktr->ktr_code);
1981         else {
1982                 printf("%s", linux_syscallnames[ktr->ktr_code]);
1983                 if (syscallno)
1984                         printf("[%d]", ktr->ktr_code);
1985         }
1986         ip = &ktr->ktr_args[0];
1987         if (narg) {
1988                 char c = '(';
1989                 while (narg > 0)
1990                         print_number(ip, narg, c);
1991                 putchar(')');
1992         }
1993         putchar('\n');
1994 }
1995
1996 void
1997 linux_ktrsysret(struct ktr_sysret *ktr)
1998 {
1999         register_t ret = ktr->ktr_retval;
2000         int error = ktr->ktr_error;
2001         int code = ktr->ktr_code;
2002
2003         if (code >= nlinux_syscalls || code < 0)
2004                 printf("[%d] ", code);
2005         else {
2006                 printf("%s", linux_syscallnames[code]);
2007                 if (syscallno)
2008                         printf("[%d]", code);
2009                 printf(" ");
2010         }
2011
2012         if (error == 0) {
2013                 if (fancy) {
2014                         printf("%ld", (long)ret);
2015                         if (ret < 0 || ret > 9)
2016                                 printf("/%#lx", (unsigned long)ret);
2017                 } else {
2018                         if (decimal)
2019                                 printf("%ld", (long)ret);
2020                         else
2021                                 printf("%#lx", (unsigned long)ret);
2022                 }
2023         } else if (error == ERESTART)
2024                 printf("RESTART");
2025         else if (error == EJUSTRETURN)
2026                 printf("JUSTRETURN");
2027         else {
2028                 if (ktr->ktr_error <= ELAST + 1)
2029                         error = abs(bsd_to_linux_errno[ktr->ktr_error]);
2030                 else
2031                         error = 999;
2032                 printf("-1 errno %d", error);
2033                 if (fancy)
2034                         printf(" %s", strerror(ktr->ktr_error));
2035         }
2036         putchar('\n');
2037 }
2038 #endif
2039
2040 void
2041 usage(void)
2042 {
2043         fprintf(stderr, "usage: kdump [-dEnlHRrSsTA] [-f trfile] "
2044             "[-m maxdata] [-p pid] [-t trstr]\n");
2045         exit(1);
2046 }