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