usr.bin/kdump/kdump.c

   1 /*-
   2  * Copyright (c) 1988, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #ifndef lint
  35 static const char copyright[] =
  36 "@(#) Copyright (c) 1988, 1993\n\
  37         The Regents of the University of California.  All rights reserved.\n";
  38 #endif /* not lint */
  39
  40 #ifndef lint
  41 #if 0
  42 static char sccsid[] = "@(#)kdump.c     8.1 (Berkeley) 6/6/93";
  43 #endif
  44 #endif /* not lint */
  45 #include <sys/cdefs.h>
  46 __FBSDID("$FreeBSD$");
  47
  48 #define _KERNEL
  49 extern int errno;
  50 #include <sys/errno.h>
  51 #undef _KERNEL
  52 #include <sys/param.h>
  53 #include <sys/errno.h>
  54 #define _KERNEL
  55 #include <sys/time.h>
  56 #undef _KERNEL
  57 #include <sys/uio.h>
  58 #include <sys/ktrace.h>
  59 #include <sys/ioctl.h>
  60 #include <sys/socket.h>
  61 #include <dlfcn.h>
  62 #include <err.h>
  63 #include <locale.h>
  64 #include <stdio.h>
  65 #include <stdlib.h>
  66 #include <string.h>
  67 #include <unistd.h>
  68 #include <vis.h>
  69 #include "ktrace.h"
  70 #include "kdump_subr.h"
  71
  72 int fread_tail(void *, int, int);
  73 void dumpheader(struct ktr_header *);
  74 void ktrsyscall(struct ktr_syscall *);
  75 void ktrsysret(struct ktr_sysret *);
  76 void ktrnamei(char *, int);
  77 void hexdump(char *, int, int);
  78 void visdump(char *, int, int);
  79 void ktrgenio(struct ktr_genio *, int);
  80 void ktrpsig(struct ktr_psig *);
  81 void ktrcsw(struct ktr_csw *);
  82 void ktruser(int, unsigned char *);
  83 void usage(void);
  84 const char *ioctlname(u_long);
  85
  86 int timestamp, decimal, fancy = 1, suppressdata, tail, threads, maxdata;
  87 const char *tracefile = DEF_TRACEFILE;
  88 struct ktr_header ktr_header;
  89
  90 #define eqs(s1, s2)     (strcmp((s1), (s2)) == 0)
  91
  92 int
  93 main(int argc, char *argv[])
  94 {
  95         int ch, ktrlen, size;
  96         void *m;
  97         int trpoints = ALL_POINTS;
  98         int drop_logged;
  99         pid_t pid = 0;
 100
 101         (void) setlocale(LC_CTYPE, "");
 102
 103         while ((ch = getopt(argc,argv,"f:dElm:np:HRsTt:")) != -1)
 104                 switch((char)ch) {
 105                 case 'f':
 106                         tracefile = optarg;
 107                         break;
 108                 case 'd':
 109                         decimal = 1;
 110                         break;
 111                 case 'l':
 112                         tail = 1;
 113                         break;
 114                 case 'm':
 115                         maxdata = atoi(optarg);
 116                         break;
 117                 case 'n':
 118                         fancy = 0;
 119                         break;
 120                 case 'p':
 121                         pid = atoi(optarg);
 122                         break;
 123                 case 's':
 124                         suppressdata = 1;
 125                         break;
 126                 case 'E':
 127                         timestamp = 3;  /* elapsed timestamp */
 128                         break;
 129                 case 'H':
 130                         threads = 1;
 131                         break;
 132                 case 'R':
 133                         timestamp = 2;  /* relative timestamp */
 134                         break;
 135                 case 'T':
 136                         timestamp = 1;
 137                         break;
 138                 case 't':
 139                         trpoints = getpoints(optarg);
 140                         if (trpoints < 0)
 141                                 errx(1, "unknown trace point in %s", optarg);
 142                         break;
 143                 default:
 144                         usage();
 145                 }
 146
 147         if (argc > optind)
 148                 usage();
 149
 150         m = (void *)malloc(size = 1025);
 151         if (m == NULL)
 152                 errx(1, "%s", strerror(ENOMEM));
 153         if (!freopen(tracefile, "r", stdin))
 154                 err(1, "%s", tracefile);
 155         drop_logged = 0;
 156         while (fread_tail(&ktr_header, sizeof(struct ktr_header), 1)) {
 157                 if (ktr_header.ktr_type & KTR_DROP) {
 158                         ktr_header.ktr_type &= ~KTR_DROP;
 159                         if (!drop_logged && threads) {
 160                                 (void)printf("%6d %6d %-8.*s Events dropped.\n",
 161                                     ktr_header.ktr_pid, ktr_header.ktr_tid >
 162                                     0 ? ktr_header.ktr_tid : 0, MAXCOMLEN,
 163                                     ktr_header.ktr_comm);
 164                                 drop_logged = 1;
 165                         } else if (!drop_logged) {
 166                                 (void)printf("%6d %-8.*s Events dropped.\n",
 167                                     ktr_header.ktr_pid, MAXCOMLEN,
 168                                     ktr_header.ktr_comm);
 169                                 drop_logged = 1;
 170                         }
 171                 }
 172                 if (trpoints & (1<<ktr_header.ktr_type))
 173                         if (pid == 0 || ktr_header.ktr_pid == pid)
 174                                 dumpheader(&ktr_header);
 175                 if ((ktrlen = ktr_header.ktr_len) < 0)
 176                         errx(1, "bogus length 0x%x", ktrlen);
 177                 if (ktrlen > size) {
 178                         m = (void *)realloc(m, ktrlen+1);
 179                         if (m == NULL)
 180                                 errx(1, "%s", strerror(ENOMEM));
 181                         size = ktrlen;
 182                 }
 183                 if (ktrlen && fread_tail(m, ktrlen, 1) == 0)
 184                         errx(1, "data too short");
 185                 if (pid && ktr_header.ktr_pid != pid)
 186                         continue;
 187                 if ((trpoints & (1<<ktr_header.ktr_type)) == 0)
 188                         continue;
 189                 drop_logged = 0;
 190                 switch (ktr_header.ktr_type) {
 191                 case KTR_SYSCALL:
 192                         ktrsyscall((struct ktr_syscall *)m);
 193                         break;
 194                 case KTR_SYSRET:
 195                         ktrsysret((struct ktr_sysret *)m);
 196                         break;
 197                 case KTR_NAMEI:
 198                         ktrnamei(m, ktrlen);
 199                         break;
 200                 case KTR_GENIO:
 201                         ktrgenio((struct ktr_genio *)m, ktrlen);
 202                         break;
 203                 case KTR_PSIG:
 204                         ktrpsig((struct ktr_psig *)m);
 205                         break;
 206                 case KTR_CSW:
 207                         ktrcsw((struct ktr_csw *)m);
 208                         break;
 209                 case KTR_USER:
 210                         ktruser(ktrlen, m);
 211                         break;
 212                 default:
 213                         printf("\n");
 214                         break;
 215                 }
 216                 if (tail)
 217                         (void)fflush(stdout);
 218         }
 219         return 0;
 220 }
 221
 222 int
 223 fread_tail(void *buf, int size, int num)
 224 {
 225         int i;
 226
 227         while ((i = fread(buf, size, num, stdin)) == 0 && tail) {
 228                 (void)sleep(1);
 229                 clearerr(stdin);
 230         }
 231         return (i);
 232 }
 233
 234 void
 235 dumpheader(struct ktr_header *kth)
 236 {
 237         static char unknown[64];
 238         static struct timeval prevtime, temp;
 239         const char *type;
 240
 241         switch (kth->ktr_type) {
 242         case KTR_SYSCALL:
 243                 type = "CALL";
 244                 break;
 245         case KTR_SYSRET:
 246                 type = "RET ";
 247                 break;
 248         case KTR_NAMEI:
 249                 type = "NAMI";
 250                 break;
 251         case KTR_GENIO:
 252                 type = "GIO ";
 253                 break;
 254         case KTR_PSIG:
 255                 type = "PSIG";
 256                 break;
 257         case KTR_CSW:
 258                 type = "CSW";
 259                 break;
 260         case KTR_USER:
 261                 type = "USER";
 262                 break;
 263         default:
 264                 (void)sprintf(unknown, "UNKNOWN(%d)", kth->ktr_type);
 265                 type = unknown;
 266         }
 267
 268         /*
 269          * The ktr_tid field was previously the ktr_buffer field, which held
 270          * the kernel pointer value for the buffer associated with data
 271          * following the record header.  It now holds a threadid, but only
 272          * for trace files after the change.  Older trace files still contain
 273          * kernel pointers.  Detect this and suppress the results by printing
 274          * negative tid's as 0.
 275          */
 276         if (threads)
 277                 (void)printf("%6d %6d %-8.*s ", kth->ktr_pid, kth->ktr_tid >
 278                     0 ? kth->ktr_tid : 0, MAXCOMLEN, kth->ktr_comm);
 279         else
 280                 (void)printf("%6d %-8.*s ", kth->ktr_pid, MAXCOMLEN,
 281                     kth->ktr_comm);
 282         if (timestamp) {
 283                 if (timestamp == 3) {
 284                         if (prevtime.tv_sec == 0)
 285                                 prevtime = kth->ktr_time;
 286                         timevalsub(&kth->ktr_time, &prevtime);
 287                 }
 288                 if (timestamp == 2) {
 289                         temp = kth->ktr_time;
 290                         timevalsub(&kth->ktr_time, &prevtime);
 291                         prevtime = temp;
 292                 }
 293                 (void)printf("%ld.%06ld ",
 294                     kth->ktr_time.tv_sec, kth->ktr_time.tv_usec);
 295         }
 296         (void)printf("%s  ", type);
 297 }
 298
 299 #include <sys/syscall.h>
 300 #define KTRACE
 301 #include <sys/kern/syscalls.c>
 302 #undef KTRACE
 303 int nsyscalls = sizeof (syscallnames) / sizeof (syscallnames[0]);
 304
 305 void
 306 ktrsyscall(struct ktr_syscall *ktr)
 307 {
 308         int narg = ktr->ktr_narg;
 309         register_t *ip;
 310
 311         if (ktr->ktr_code >= nsyscalls || ktr->ktr_code < 0)
 312                 (void)printf("[%d]", ktr->ktr_code);
 313         else
 314                 (void)printf("%s", syscallnames[ktr->ktr_code]);
 315         ip = &ktr->ktr_args[0];
 316         if (narg) {
 317                 char c = '(';
 318                 if (fancy) {
 319
 320 #define print_number(i,n,c) do {                      \
 321         if (decimal)                                  \
 322                 (void)printf("%c%ld", c, (long)*i);   \
 323         else                                          \
 324                 (void)printf("%c%#lx", c, (long)*i);  \
 325         i++;                                          \
 326         n--;                                          \
 327         c = ',';                                      \
 328         } while (0);
 329
 330                         if (ktr->ktr_code == SYS_ioctl) {
 331                                 const char *cp;
 332                                 print_number(ip,narg,c);
 333                                 if ((cp = ioctlname(*ip)) != NULL)
 334                                         (void)printf(",%s", cp);
 335                                 else {
 336                                         if (decimal)
 337                                                 (void)printf(",%ld", (long)*ip);
 338                                         else
 339                                                 (void)printf(",%#lx ", (long)*ip);
 340                                 }
 341                                 c = ',';
 342                                 ip++;
 343                                 narg--;
 344                         } else if (ktr->ktr_code == SYS_ptrace) {
 345                                 (void)putchar('(');
 346                                 ptraceopname ((int)*ip);
 347                                 c = ',';
 348                                 ip++;
 349                                 narg--;
 350                         } else if (ktr->ktr_code == SYS_access ||
 351                                    ktr->ktr_code == SYS_eaccess) {
 352                                 print_number(ip,narg,c);
 353                                 (void)putchar(',');
 354                                 accessmodename ((int)*ip);
 355                                 ip++;
 356                                 narg--;
 357                         } else if (ktr->ktr_code == SYS_open) {
 358                                 int     flags;
 359                                 int     mode;
 360                                 print_number(ip,narg,c);
 361                                 flags = *ip;
 362                                 mode = *++ip;
 363                                 (void)putchar(',');
 364                                 flagsandmodename (flags, mode, decimal);
 365                                 ip++;
 366                                 narg-=2;
 367                         } else if (ktr->ktr_code == SYS_wait4) {
 368                                 print_number(ip,narg,c);
 369                                 print_number(ip,narg,c);
 370                                 (void)putchar(',');
 371                                 wait4optname ((int)*ip);
 372                                 ip++;
 373                                 narg--;
 374                         } else if (ktr->ktr_code == SYS_chmod ||
 375                                    ktr->ktr_code == SYS_fchmod ||
 376                                    ktr->ktr_code == SYS_lchmod) {
 377                                 print_number(ip,narg,c);
 378                                 (void)putchar(',');
 379                                 modename ((int)*ip);
 380                                 ip++;
 381                                 narg--;
 382                         } else if (ktr->ktr_code == SYS_mknod) {
 383                                 print_number(ip,narg,c);
 384                                 (void)putchar(',');
 385                                 modename ((int)*ip);
 386                                 ip++;
 387                                 narg--;
 388                         } else if (ktr->ktr_code == SYS_getfsstat) {
 389                                 print_number(ip,narg,c);
 390                                 print_number(ip,narg,c);
 391                                 (void)putchar(',');
 392                                 getfsstatflagsname ((int)*ip);
 393                                 ip++;
 394                                 narg--;
 395                         } else if (ktr->ktr_code == SYS_mount) {
 396                                 print_number(ip,narg,c);
 397                                 print_number(ip,narg,c);
 398                                 (void)putchar(',');
 399                                 mountflagsname ((int)*ip);
 400                                 ip++;
 401                                 narg--;
 402                         } else if (ktr->ktr_code == SYS_unmount) {
 403                                 print_number(ip,narg,c);
 404                                 (void)putchar(',');
 405                                 mountflagsname ((int)*ip);
 406                                 ip++;
 407                                 narg--;
 408                         } else if (ktr->ktr_code == SYS_recvmsg ||
 409                                    ktr->ktr_code == SYS_sendmsg) {
 410                                 print_number(ip,narg,c);
 411                                 print_number(ip,narg,c);
 412                                 (void)putchar(',');
 413                                 sendrecvflagsname ((int)*ip);
 414                                 ip++;
 415                                 narg--;
 416                         } else if (ktr->ktr_code == SYS_recvfrom ||
 417                                    ktr->ktr_code == SYS_sendto) {
 418                                 print_number(ip,narg,c);
 419                                 print_number(ip,narg,c);
 420                                 print_number(ip,narg,c);
 421                                 (void)putchar(',');
 422                                 sendrecvflagsname ((int)*ip);
 423                                 ip++;
 424                                 narg--;
 425                         } else if (ktr->ktr_code == SYS_chflags ||
 426                                    ktr->ktr_code == SYS_fchflags ||
 427                                    ktr->ktr_code == SYS_lchflags) {
 428                                 print_number(ip,narg,c);
 429                                 (void)putchar(',');
 430                                 modename((int)*ip);
 431                                 ip++;
 432                                 narg--;
 433                         } else if (ktr->ktr_code == SYS_kill) {
 434                                 print_number(ip,narg,c);
 435                                 (void)putchar(',');
 436                                 signame((int)*ip);
 437                                 ip++;
 438                                 narg--;
 439                         } else if (ktr->ktr_code == SYS_reboot) {
 440                                 (void)putchar('(');
 441                                 rebootoptname((int)*ip);
 442                                 ip++;
 443                                 narg--;
 444                         } else if (ktr->ktr_code == SYS_umask) {
 445                                 (void)putchar('(');
 446                                 modename((int)*ip);
 447                                 ip++;
 448                                 narg--;
 449                         } else if (ktr->ktr_code == SYS_msync) {
 450                                 print_number(ip,narg,c);
 451                                 print_number(ip,narg,c);
 452                                 (void)putchar(',');
 453                                 msyncflagsname((int)*ip);
 454                                 ip++;
 455                                 narg--;
 456                         } else if (ktr->ktr_code == SYS_mmap) {
 457                                 print_number(ip,narg,c);
 458                                 print_number(ip,narg,c);
 459                                 (void)putchar(',');
 460                                 mmapprotname ((int)*ip);
 461                                 (void)putchar(',');
 462                                 ip++;
 463                                 narg--;
 464                                 mmapflagsname ((int)*ip);
 465                                 ip++;
 466                                 narg--;
 467                         } else if (ktr->ktr_code == SYS_mprotect) {
 468                                 print_number(ip,narg,c);
 469                                 print_number(ip,narg,c);
 470                                 (void)putchar(',');
 471                                 mmapprotname ((int)*ip);
 472                                 ip++;
 473                                 narg--;
 474                         } else if (ktr->ktr_code == SYS_madvise) {
 475                                 print_number(ip,narg,c);
 476                                 print_number(ip,narg,c);
 477                                 (void)putchar(',');
 478                                 madvisebehavname((int)*ip);
 479                                 ip++;
 480                                 narg--;
 481                         } else if (ktr->ktr_code == SYS_setpriority) {
 482                                 print_number(ip,narg,c);
 483                                 print_number(ip,narg,c);
 484                                 (void)putchar(',');
 485                                 prioname((int)*ip);
 486                                 ip++;
 487                                 narg--;
 488                         } else if (ktr->ktr_code == SYS_fcntl) {
 489                                 int cmd;
 490                                 int arg;
 491                                 print_number(ip,narg,c);
 492                                 cmd = *ip;
 493                                 arg = *++ip;
 494                                 (void)putchar(',');
 495                                 fcntlcmdname(cmd, arg, decimal);
 496                                 ip++;
 497                                 narg-=2;
 498                         } else if (ktr->ktr_code == SYS_socket) {
 499                                 int sockdomain;
 500                                 (void)putchar('(');
 501                                 sockdomain=(int)*ip;
 502                                 sockdomainname(sockdomain);
 503                                 ip++;
 504                                 narg--;
 505                                 (void)putchar(',');
 506                                 socktypename((int)*ip);
 507                                 ip++;
 508                                 narg--;
 509                                 if (sockdomain == PF_INET ||
 510                                     sockdomain == PF_INET6) {
 511                                         (void)putchar(',');
 512                                         sockipprotoname((int)*ip);
 513                                         ip++;
 514                                         narg--;
 515                                 }
 516                                 c = ',';
 517                         } else if (ktr->ktr_code == SYS_setsockopt ||
 518                                    ktr->ktr_code == SYS_getsockopt) {
 519                                 print_number(ip,narg,c);
 520                                 (void)putchar(',');
 521                                 sockoptlevelname((int)*ip, decimal);
 522                                 ip++;
 523                                 narg--;
 524                                 (void)putchar(',');
 525                                 sockoptname((int)*ip);
 526                                 ip++;
 527                                 narg--;
 528                         } else if (ktr->ktr_code == SYS_lseek) {
 529                                 print_number(ip,narg,c);
 530                                 /* Hidden 'pad' argument, not in lseek(2) */
 531                                 print_number(ip,narg,c);
 532                                 print_number(ip,narg,c);
 533                                 (void)putchar(',');
 534                                 whencename ((int)*ip);
 535                                 ip++;
 536                                 narg--;
 537                         } else if (ktr->ktr_code == SYS_flock) {
 538                                 print_number(ip,narg,c);
 539                                 (void)putchar(',');
 540                                 flockname((int)*ip);
 541                                 ip++;
 542                                 narg--;
 543                         } else if (ktr->ktr_code == SYS_mkfifo ||
 544                                    ktr->ktr_code == SYS_mkdir) {
 545                                 print_number(ip,narg,c);
 546                                 (void)putchar(',');
 547                                 modename((int)*ip);
 548                                 ip++;
 549                                 narg--;
 550                         } else if (ktr->ktr_code == SYS_shutdown) {
 551                                 print_number(ip,narg,c);
 552                                 (void)putchar(',');
 553                                 shutdownhowname((int)*ip);
 554                                 ip++;
 555                                 narg--;
 556                         } else if (ktr->ktr_code == SYS_socketpair) {
 557                                 (void)putchar('(');
 558                                 sockdomainname((int)*ip);
 559                                 ip++;
 560                                 narg--;
 561                                 (void)putchar(',');
 562                                 socktypename((int)*ip);
 563                                 ip++;
 564                                 narg--;
 565                                 c = ',';
 566                         } else if (ktr->ktr_code == SYS_getrlimit ||
 567                                    ktr->ktr_code == SYS_setrlimit) {
 568                                 (void)putchar('(');
 569                                 rlimitname((int)*ip);
 570                                 ip++;
 571                                 narg--;
 572                                 c = ',';
 573                         } else if (ktr->ktr_code == SYS_quotactl) {
 574                                 print_number(ip,narg,c);
 575                                 quotactlname((int)*ip);
 576                                 ip++;
 577                                 narg--;
 578                                 c = ',';
 579                         } else if (ktr->ktr_code == SYS_nfssvc) {
 580                                 (void)putchar('(');
 581                                 nfssvcname((int)*ip);
 582                                 ip++;
 583                                 narg--;
 584                                 c = ',';
 585                         } else if (ktr->ktr_code == SYS_rtprio) {
 586                                 (void)putchar('(');
 587                                 rtprioname((int)*ip);
 588                                 ip++;
 589                                 narg--;
 590                                 c = ',';
 591                         } else if (ktr->ktr_code == SYS___semctl) {
 592                                 print_number(ip,narg,c);
 593                                 print_number(ip,narg,c);
 594                                 semctlname((int)*ip);
 595                                 ip++;
 596                                 narg--;
 597                         } else if (ktr->ktr_code == SYS_semget) {
 598                                 print_number(ip,narg,c);
 599                                 print_number(ip,narg,c);
 600                                 semgetname((int)*ip);
 601                                 ip++;
 602                                 narg--;
 603                         } else if (ktr->ktr_code == SYS_msgctl) {
 604                                 print_number(ip,narg,c);
 605                                 shmctlname((int)*ip);
 606                                 ip++;
 607                                 narg--;
 608                         } else if (ktr->ktr_code == SYS_shmat) {
 609                                 print_number(ip,narg,c);
 610                                 print_number(ip,narg,c);
 611                                 shmatname((int)*ip);
 612                                 ip++;
 613                                 narg--;
 614                         } else if (ktr->ktr_code == SYS_shmctl) {
 615                                 print_number(ip,narg,c);
 616                                 shmctlname((int)*ip);
 617                                 ip++;
 618                                 narg--;
 619                         } else if (ktr->ktr_code == SYS_minherit) {
 620                                 print_number(ip,narg,c);
 621                                 print_number(ip,narg,c);
 622                                 minheritname((int)*ip);
 623                                 ip++;
 624                                 narg--;
 625                         } else if (ktr->ktr_code == SYS_rfork) {
 626                                 (void)putchar('(');
 627                                 rforkname((int)*ip);
 628                                 ip++;
 629                                 narg--;
 630                                 c = ',';
 631                         } else if (ktr->ktr_code == SYS_lio_listio) {
 632                                 (void)putchar('(');
 633                                 lio_listioname((int)*ip);
 634                                 ip++;
 635                                 narg--;
 636                                 c = ',';
 637                         } else if (ktr->ktr_code == SYS_mlockall) {
 638                                 (void)putchar('(');
 639                                 mlockallname((int)*ip);
 640                                 ip++;
 641                                 narg--;
 642                         } else if (ktr->ktr_code == SYS_sched_setscheduler) {
 643                                 print_number(ip,narg,c);
 644                                 schedpolicyname((int)*ip);
 645                                 ip++;
 646                                 narg--;
 647                         } else if (ktr->ktr_code == SYS_sched_get_priority_max ||
 648                                    ktr->ktr_code == SYS_sched_get_priority_min) {
 649                                 (void)putchar('(');
 650                                 schedpolicyname((int)*ip);
 651                                 ip++;
 652                                 narg--;
 653                         } else if (ktr->ktr_code == SYS_sendfile) {
 654                                 print_number(ip,narg,c);
 655                                 print_number(ip,narg,c);
 656                                 print_number(ip,narg,c);
 657                                 print_number(ip,narg,c);
 658                                 print_number(ip,narg,c);
 659                                 print_number(ip,narg,c);
 660                                 sendfileflagsname((int)*ip);
 661                                 ip++;
 662                                 narg--;
 663                         } else if (ktr->ktr_code == SYS_kldsym) {
 664                                 print_number(ip,narg,c);
 665                                 kldsymcmdname((int)*ip);
 666                                 ip++;
 667                                 narg--;
 668                         } else if (ktr->ktr_code == SYS_sigprocmask) {
 669                                 (void)putchar('(');
 670                                 sigprocmaskhowname((int)*ip);
 671                                 ip++;
 672                                 narg--;
 673                                 c = ',';
 674                         } else if (ktr->ktr_code == SYS___acl_get_file ||
 675                                    ktr->ktr_code == SYS___acl_set_file ||
 676                                    ktr->ktr_code == SYS___acl_get_fd ||
 677                                    ktr->ktr_code == SYS___acl_set_fd ||
 678                                    ktr->ktr_code == SYS___acl_delete_file ||
 679                                    ktr->ktr_code == SYS___acl_delete_fd ||
 680                                    ktr->ktr_code == SYS___acl_aclcheck_file ||
 681                                    ktr->ktr_code == SYS___acl_aclcheck_fd ||
 682                                    ktr->ktr_code == SYS___acl_get_link ||
 683                                    ktr->ktr_code == SYS___acl_set_link ||
 684                                    ktr->ktr_code == SYS___acl_delete_link ||
 685                                    ktr->ktr_code == SYS___acl_aclcheck_link) {
 686                                 print_number(ip,narg,c);
 687                                 acltypename((int)*ip);
 688                                 ip++;
 689                                 narg--;
 690                         } else if (ktr->ktr_code == SYS_sigaction) {
 691                                 (void)putchar('(');
 692                                 signame((int)*ip);
 693                                 ip++;
 694                                 narg--;
 695                                 c = ',';
 696                         } else if (ktr->ktr_code == SYS_extattrctl) {
 697                                 print_number(ip,narg,c);
 698                                 extattrctlname((int)*ip);
 699                                 ip++;
 700                                 narg--;
 701                         } else if (ktr->ktr_code == SYS_nmount) {
 702                                 print_number(ip,narg,c);
 703                                 print_number(ip,narg,c);
 704                                 (void)putchar(',');
 705                                 mountflagsname ((int)*ip);
 706                                 ip++;
 707                                 narg--;
 708                         } else if (ktr->ktr_code == SYS_kse_thr_interrupt) {
 709                                 print_number(ip,narg,c);
 710                                 (void)putchar(',');
 711                                 ksethrcmdname ((int)*ip);
 712                                 ip++;
 713                                 narg--;
 714                         } else if (ktr->ktr_code == SYS_thr_create) {
 715                                 print_number(ip,narg,c);
 716                                 print_number(ip,narg,c);
 717                                 (void)putchar(',');
 718                                 thrcreateflagsname ((int)*ip);
 719                                 ip++;
 720                                 narg--;
 721                         } else if (ktr->ktr_code == SYS_thr_kill) {
 722                                 print_number(ip,narg,c);
 723                                 (void)putchar(',');
 724                                 signame ((int)*ip);
 725                                 ip++;
 726                                 narg--;
 727                         } else if (ktr->ktr_code == SYS_kldunloadf) {
 728                                 print_number(ip,narg,c);
 729                                 (void)putchar(',');
 730                                 kldunloadfflagsname ((int)*ip);
 731                                 ip++;
 732                                 narg--;
 733                         }
 734                 }
 735                 while (narg) {
 736                         print_number(ip,narg,c);
 737                 }
 738                 (void)putchar(')');
 739         }
 740         (void)putchar('\n');
 741 }
 742
 743 void
 744 ktrsysret(struct ktr_sysret *ktr)
 745 {
 746         register_t ret = ktr->ktr_retval;
 747         int error = ktr->ktr_error;
 748         int code = ktr->ktr_code;
 749
 750         if (code >= nsyscalls || code < 0)
 751                 (void)printf("[%d] ", code);
 752         else
 753                 (void)printf("%s ", syscallnames[code]);
 754
 755         if (error == 0) {
 756                 if (fancy) {
 757                         (void)printf("%d", ret);
 758                         if (ret < 0 || ret > 9)
 759                                 (void)printf("/%#lx", (long)ret);
 760                 } else {
 761                         if (decimal)
 762                                 (void)printf("%ld", (long)ret);
 763                         else
 764                                 (void)printf("%#lx", (long)ret);
 765                 }
 766         } else if (error == ERESTART)
 767                 (void)printf("RESTART");
 768         else if (error == EJUSTRETURN)
 769                 (void)printf("JUSTRETURN");
 770         else {
 771                 (void)printf("-1 errno %d", ktr->ktr_error);
 772                 if (fancy)
 773                         (void)printf(" %s", strerror(ktr->ktr_error));
 774         }
 775         (void)putchar('\n');
 776 }
 777
 778 void
 779 ktrnamei(char *cp, int len)
 780 {
 781         (void)printf("\"%.*s\"\n", len, cp);
 782 }
 783
 784 void
 785 hexdump(char *p, int len, int screenwidth)
 786 {
 787         int n, i;
 788         int width;
 789
 790         width = 0;
 791         do {
 792                 width += 2;
 793                 i = 13;                 /* base offset */
 794                 i += (width / 2) + 1;   /* spaces every second byte */
 795                 i += (width * 2);       /* width of bytes */
 796                 i += 3;                 /* "  |" */
 797                 i += width;             /* each byte */
 798                 i += 1;                 /* "|" */
 799         } while (i < screenwidth);
 800         width -= 2;
 801
 802         for (n = 0; n < len; n += width) {
 803                 for (i = n; i < n + width; i++) {
 804                         if ((i % width) == 0) { /* beginning of line */
 805                                 printf("       0x%04x", i);
 806                         }
 807                         if ((i % 2) == 0) {
 808                                 printf(" ");
 809                         }
 810                         if (i < len)
 811                                 printf("%02x", p[i] & 0xff);
 812                         else
 813                                 printf("  ");
 814                 }
 815                 printf("  |");
 816                 for (i = n; i < n + width; i++) {
 817                         if (i >= len)
 818                                 break;
 819                         if (p[i] >= ' ' && p[i] <= '~')
 820                                 printf("%c", p[i]);
 821                         else
 822                                 printf(".");
 823                 }
 824                 printf("|\n");
 825         }
 826         if ((i % width) != 0)
 827                 printf("\n");
 828 }
 829
 830 void
 831 visdump(char *dp, int datalen, int screenwidth)
 832 {
 833         int col = 0;
 834         char *cp;
 835         int width;
 836         char visbuf[5];
 837
 838         (void)printf("       \"");
 839         col = 8;
 840         for (;datalen > 0; datalen--, dp++) {
 841                 (void) vis(visbuf, *dp, VIS_CSTYLE, *(dp+1));
 842                 cp = visbuf;
 843                 /*
 844                  * Keep track of printables and
 845                  * space chars (like fold(1)).
 846                  */
 847                 if (col == 0) {
 848                         (void)putchar('\t');
 849                         col = 8;
 850                 }
 851                 switch(*cp) {
 852                 case '\n':
 853                         col = 0;
 854                         (void)putchar('\n');
 855                         continue;
 856                 case '\t':
 857                         width = 8 - (col&07);
 858                         break;
 859                 default:
 860                         width = strlen(cp);
 861                 }
 862                 if (col + width > (screenwidth-2)) {
 863                         (void)printf("\\\n\t");
 864                         col = 8;
 865                 }
 866                 col += width;
 867                 do {
 868                         (void)putchar(*cp++);
 869                 } while (*cp);
 870         }
 871         if (col == 0)
 872                 (void)printf("       ");
 873         (void)printf("\"\n");
 874 }
 875
 876 void
 877 ktrgenio(struct ktr_genio *ktr, int len)
 878 {
 879         int datalen = len - sizeof (struct ktr_genio);
 880         char *dp = (char *)ktr + sizeof (struct ktr_genio);
 881         static int screenwidth = 0;
 882         int i, binary;
 883
 884         if (screenwidth == 0) {
 885                 struct winsize ws;
 886
 887                 if (fancy && ioctl(fileno(stderr), TIOCGWINSZ, &ws) != -1 &&
 888                     ws.ws_col > 8)
 889                         screenwidth = ws.ws_col;
 890                 else
 891                         screenwidth = 80;
 892         }
 893         printf("fd %d %s %d byte%s\n", ktr->ktr_fd,
 894                 ktr->ktr_rw == UIO_READ ? "read" : "wrote", datalen,
 895                 datalen == 1 ? "" : "s");
 896         if (suppressdata)
 897                 return;
 898         if (maxdata && datalen > maxdata)
 899                 datalen = maxdata;
 900
 901         for (i = 0, binary = 0; i < datalen && binary == 0; i++)  {
 902                 if (dp[i] >= 32 && dp[i] < 127)
 903                         continue;
 904                 if (dp[i] == 10 || dp[i] == 13 || dp[i] == 0 || dp[i] == 9)
 905                         continue;
 906                 binary = 1;
 907         }
 908         if (binary)
 909                 hexdump(dp, datalen, screenwidth);
 910         else
 911                 visdump(dp, datalen, screenwidth);
 912 }
 913
 914 const char *signames[] = {
 915         "NULL", "HUP", "INT", "QUIT", "ILL", "TRAP", "IOT",     /*  1 - 6  */
 916         "EMT", "FPE", "KILL", "BUS", "SEGV", "SYS",             /*  7 - 12 */
 917         "PIPE", "ALRM",  "TERM", "URG", "STOP", "TSTP",         /* 13 - 18 */
 918         "CONT", "CHLD", "TTIN", "TTOU", "IO", "XCPU",           /* 19 - 24 */
 919         "XFSZ", "VTALRM", "PROF", "WINCH", "29", "USR1",        /* 25 - 30 */
 920         "USR2", NULL,                                           /* 31 - 32 */
 921 };
 922
 923 void
 924 ktrpsig(struct ktr_psig *psig)
 925 {
 926         if (psig->signo > 0 && psig->signo < NSIG)
 927                 (void)printf("SIG%s ", signames[psig->signo]);
 928         else
 929                 (void)printf("SIG %d ", psig->signo);
 930         if (psig->action == SIG_DFL)
 931                 (void)printf("SIG_DFL\n");
 932         else {
 933                 (void)printf("caught handler=0x%lx mask=0x%x code=0x%x\n",
 934                     (u_long)psig->action, psig->mask.__bits[0], psig->code);
 935         }
 936 }
 937
 938 void
 939 ktrcsw(struct ktr_csw *cs)
 940 {
 941         (void)printf("%s %s\n", cs->out ? "stop" : "resume",
 942                 cs->user ? "user" : "kernel");
 943 }
 944
 945 #define UTRACE_DLOPEN_START             1
 946 #define UTRACE_DLOPEN_STOP              2
 947 #define UTRACE_DLCLOSE_START            3
 948 #define UTRACE_DLCLOSE_STOP             4
 949 #define UTRACE_LOAD_OBJECT              5
 950 #define UTRACE_UNLOAD_OBJECT            6
 951 #define UTRACE_ADD_RUNDEP               7
 952 #define UTRACE_PRELOAD_FINISHED         8
 953 #define UTRACE_INIT_CALL                9
 954 #define UTRACE_FINI_CALL                10
 955
 956 struct utrace_rtld {
 957         char sig[4];                            /* 'RTLD' */
 958         int event;
 959         void *handle;
 960         void *mapbase;
 961         size_t mapsize;
 962         int refcnt;
 963         char name[MAXPATHLEN];
 964 };
 965
 966 void
 967 ktruser_rtld(int len, unsigned char *p)
 968 {
 969         struct utrace_rtld *ut = (struct utrace_rtld *)p;
 970         void *parent;
 971         int mode;
 972
 973         switch (ut->event) {
 974         case UTRACE_DLOPEN_START:
 975                 mode = ut->refcnt;
 976                 printf("dlopen(%s, ", ut->name);
 977                 switch (mode & RTLD_MODEMASK) {
 978                 case RTLD_NOW:
 979                         printf("RTLD_NOW");
 980                         break;
 981                 case RTLD_LAZY:
 982                         printf("RTLD_LAZY");
 983                         break;
 984                 default:
 985                         printf("%#x", mode & RTLD_MODEMASK);
 986                 }
 987                 if (mode & RTLD_GLOBAL)
 988                         printf(" | RTLD_GLOBAL");
 989                 if (mode & RTLD_TRACE)
 990                         printf(" | RTLD_TRACE");
 991                 if (mode & ~(RTLD_MODEMASK | RTLD_GLOBAL | RTLD_TRACE))
 992                         printf(" | %#x", mode &
 993                             ~(RTLD_MODEMASK | RTLD_GLOBAL | RTLD_TRACE));
 994                 printf(")\n");
 995                 break;
 996         case UTRACE_DLOPEN_STOP:
 997                 printf("%p = dlopen(%s) ref %d\n", ut->handle, ut->name,
 998                     ut->refcnt);
 999                 break;
1000         case UTRACE_DLCLOSE_START:
1001                 printf("dlclose(%p) (%s, %d)\n", ut->handle, ut->name,
1002                     ut->refcnt);
1003                 break;
1004         case UTRACE_DLCLOSE_STOP:
1005                 printf("dlclose(%p) finished\n", ut->handle);
1006                 break;
1007         case UTRACE_LOAD_OBJECT:
1008                 printf("RTLD: loaded   %p @ %p - %p (%s)\n", ut->handle,
1009                     ut->mapbase, (char *)ut->mapbase + ut->mapsize - 1,
1010                     ut->name);
1011                 break;
1012         case UTRACE_UNLOAD_OBJECT:
1013                 printf("RTLD: unloaded %p @ %p - %p (%s)\n", ut->handle,
1014                     ut->mapbase, (char *)ut->mapbase + ut->mapsize - 1,
1015                     ut->name);
1016                 break;
1017         case UTRACE_ADD_RUNDEP:
1018                 parent = ut->mapbase;
1019                 printf("RTLD: %p now depends on %p (%s, %d)\n", parent,
1020                     ut->handle, ut->name, ut->refcnt);
1021                 break;
1022         case UTRACE_PRELOAD_FINISHED:
1023                 printf("RTLD: LD_PRELOAD finished\n");
1024                 break;
1025         case UTRACE_INIT_CALL:
1026                 printf("RTLD: init %p for %p (%s)\n", ut->mapbase, ut->handle,
1027                     ut->name);
1028                 break;
1029         case UTRACE_FINI_CALL:
1030                 printf("RTLD: fini %p for %p (%s)\n", ut->mapbase, ut->handle,
1031                     ut->name);
1032                 break;
1033         default:
1034                 p += 4;
1035                 len -= 4;
1036                 printf("RTLD: %d ", len);
1037                 while (len--)
1038                         if (decimal)
1039                                 printf(" %d", *p++);
1040                         else
1041                                 printf(" %02x", *p++);
1042                 printf("\n");
1043         }
1044 }
1045
1046 struct utrace_malloc {
1047         void *p;
1048         size_t s;
1049         void *r;
1050 };
1051
1052 void
1053 ktruser_malloc(int len, unsigned char *p)
1054 {
1055         struct utrace_malloc *ut = (struct utrace_malloc *)p;
1056
1057         if (ut->p == NULL) {
1058                 if (ut->s == 0 && ut->r == NULL)
1059                         printf("malloc_init()\n");
1060                 else
1061                         printf("%p = malloc(%zu)\n", ut->r, ut->s);
1062         } else {
1063                 if (ut->s == 0)
1064                         printf("free(%p)\n", ut->p);
1065                 else
1066                         printf("%p = realloc(%p, %zu)\n", ut->r, ut->p, ut->s);
1067         }
1068 }
1069
1070 void
1071 ktruser(int len, unsigned char *p)
1072 {
1073
1074         if (len >= 8 && bcmp(p, "RTLD", 4) == 0) {
1075                 ktruser_rtld(len, p);
1076                 return;
1077         }
1078
1079         if (len == sizeof(struct utrace_malloc)) {
1080                 ktruser_malloc(len, p);
1081                 return;
1082         }
1083
1084         (void)printf("%d ", len);
1085         while (len--)
1086                 if (decimal)
1087                         (void)printf(" %d", *p++);
1088                 else
1089                         (void)printf(" %02x", *p++);
1090         (void)printf("\n");
1091 }
1092
1093 void
1094 usage(void)
1095 {
1096         (void)fprintf(stderr,
1097   "usage: kdump [-dEnlHRsT] [-f trfile] [-m maxdata] [-p pid] [-t [cnisuw]]\n");
1098         exit(1);
1099 }