034870d096ffe3578593f6323bfda7244264d4fd
[dragonfly.git] / 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  * @(#) Copyright (c) 1988, 1993 The Regents of the University of California.  All rights reserved.
34  * @(#)kdump.c  8.1 (Berkeley) 6/6/93
35  * $FreeBSD: src/usr.bin/kdump/kdump.c,v 1.29 2006/05/20 14:27:22 netchild Exp $
36  * $DragonFly: src/usr.bin/kdump/kdump.c,v 1.13 2008/10/16 01:52:32 swildner Exp $
37  */
38
39 #define _KERNEL_STRUCTURES
40
41 #include <sys/errno.h>
42 #include <sys/param.h>
43 #include <sys/errno.h>
44 #include <sys/time.h>
45 #include <sys/uio.h>
46 #include <sys/ktrace.h>
47 #include <sys/ioctl.h>
48 #include <sys/ptrace.h>
49 #include <err.h>
50 #include <locale.h>
51 #include <stdio.h>
52 #include <stdlib.h>
53 #include <string.h>
54 #include <unistd.h>
55 #include <vis.h>
56 #include "ktrace.h"
57 #include "kdump_subr.h"
58
59 extern const char *ioctlname(u_long);
60
61 static int      dumpheader(struct ktr_header *);
62 static int      fread_tail(void *, int, int);
63 static void     ktrcsw(struct ktr_csw *);
64 static void     ktrgenio(struct ktr_genio *, int);
65 static void     ktrnamei(char *, int);
66 static void     ktrpsig(struct ktr_psig *);
67 static void     ktrsyscall(struct ktr_syscall *);
68 static void     ktrsysret(struct ktr_sysret *);
69 static void     ktruser(int, unsigned char *);
70 static void     ktruser_malloc(int, unsigned char *);
71 static void     timevalfix(struct timeval *);
72 static void     timevalsub(struct timeval *, struct timeval *);
73 static void     usage(void);
74
75 int timestamp, decimal, fancy = 1, tail, maxdata = 64;
76 int fixedformat;
77 const char *tracefile = DEF_TRACEFILE;
78 struct ktr_header ktr_header;
79
80 #define eqs(s1, s2)     (strcmp((s1), (s2)) == 0)
81
82 int
83 main(int argc, char **argv)
84 {
85         int ch, col, ktrlen, size;
86         pid_t do_pid = -1;
87         void *m;
88         int trpoints = ALL_POINTS;
89         char *cp;
90
91         (void) setlocale(LC_CTYPE, "");
92
93         while ((ch = getopt(argc,argv,"f:djlm:np:RTt:")) != -1)
94                 switch((char)ch) {
95                 case 'f':
96                         tracefile = optarg;
97                         break;
98                 case 'j':
99                         fixedformat = 1;
100                         break;
101                 case 'd':
102                         decimal = 1;
103                         break;
104                 case 'l':
105                         tail = 1;
106                         break;
107                 case 'm':
108                         maxdata = atoi(optarg);
109                         break;
110                 case 'n':
111                         fancy = 0;
112                         break;
113                 case 'p':
114                         do_pid = strtoul(optarg, &cp, 0);
115                         if (*cp != 0)
116                                 errx(1,"invalid number %s", optarg);
117                         break;
118                 case 'R':
119                         timestamp = 2;  /* relative timestamp */
120                         break;
121                 case 'T':
122                         timestamp = 1;
123                         break;
124                 case 't':
125                         trpoints = getpoints(optarg);
126                         if (trpoints < 0)
127                                 errx(1, "unknown trace point in %s", optarg);
128                         break;
129                 default:
130                         usage();
131                 }
132
133         if (argc > optind)
134                 usage();
135
136         m = (void *)malloc(size = 1025);
137         if (m == NULL)
138                 errx(1, "%s", strerror(ENOMEM));
139         if (!freopen(tracefile, "r", stdin))
140                 err(1, "%s", tracefile);
141         while (fread_tail(&ktr_header, sizeof(struct ktr_header), 1)) {
142                 if (trpoints & (1 << ktr_header.ktr_type) &&
143                     (do_pid == -1 || ktr_header.ktr_pid == do_pid))
144                         col = dumpheader(&ktr_header);
145                 else
146                         col = -1;
147                 if ((ktrlen = ktr_header.ktr_len) < 0)
148                         errx(1, "bogus length 0x%x", ktrlen);
149                 if (ktrlen > size) {
150                         m = (void *)realloc(m, ktrlen+1);
151                         if (m == NULL)
152                                 errx(1, "%s", strerror(ENOMEM));
153                         size = ktrlen;
154                 }
155                 if (ktrlen && fread_tail(m, ktrlen, 1) == 0)
156                         errx(1, "data too short");
157                 if ((trpoints & (1<<ktr_header.ktr_type)) == 0)
158                         continue;
159                 if (col == -1)
160                         continue;
161                 switch (ktr_header.ktr_type) {
162                 case KTR_SYSCALL:
163                         ktrsyscall((struct ktr_syscall *)m);
164                         break;
165                 case KTR_SYSRET:
166                         ktrsysret((struct ktr_sysret *)m);
167                         break;
168                 case KTR_NAMEI:
169                         ktrnamei(m, ktrlen);
170                         break;
171                 case KTR_GENIO:
172                         ktrgenio((struct ktr_genio *)m, ktrlen);
173                         break;
174                 case KTR_PSIG:
175                         ktrpsig((struct ktr_psig *)m);
176                         break;
177                 case KTR_CSW:
178                         ktrcsw((struct ktr_csw *)m);
179                         break;
180                 case KTR_USER:
181                         ktruser(ktrlen, m);
182                         break;
183                 }
184                 if (tail)
185                         (void)fflush(stdout);
186         }
187         exit(0);
188 }
189
190 static int
191 fread_tail(void *buf, int size, int num)
192 {
193         int i;
194
195         while ((i = fread(buf, size, num, stdin)) == 0 && tail) {
196                 (void)sleep(1);
197                 clearerr(stdin);
198         }
199         return (i);
200 }
201
202 static int
203 dumpheader(struct ktr_header *kth)
204 {
205         static char unknown[64];
206         static struct timeval prevtime, temp;
207         const char *type;
208         int col;
209
210         switch (kth->ktr_type) {
211         case KTR_SYSCALL:
212                 type = "CALL";
213                 break;
214         case KTR_SYSRET:
215                 type = "RET ";
216                 break;
217         case KTR_NAMEI:
218                 type = "NAMI";
219                 break;
220         case KTR_GENIO:
221                 type = "GIO ";
222                 break;
223         case KTR_PSIG:
224                 type = "PSIG";
225                 break;
226         case KTR_CSW:
227                 type = "CSW";
228                 break;
229         case KTR_USER:
230                 type = "USER";
231                 break;
232         default:
233                 (void)sprintf(unknown, "UNKNOWN(%d)", kth->ktr_type);
234                 type = unknown;
235         }
236
237         if (kth->ktr_tid || (kth->ktr_flags & KTRH_THREADED) || fixedformat)
238                 col = printf("%5d:%-4d", kth->ktr_pid, kth->ktr_tid);
239         else
240                 col = printf("%5d", kth->ktr_pid);
241         col += printf(" %-8.*s ", MAXCOMLEN, kth->ktr_comm);
242         if (timestamp) {
243                 if (timestamp == 2) {
244                         temp = kth->ktr_time;
245                         timevalsub(&kth->ktr_time, &prevtime);
246                         prevtime = temp;
247                 }
248                 col += printf("%ld.%06ld ",
249                     kth->ktr_time.tv_sec, kth->ktr_time.tv_usec);
250         }
251         col += printf("%s  ", type);
252         return col;
253 }
254
255 #include <sys/syscall.h>
256 #define KTRACE
257 #include <sys/kern/syscalls.c>
258 #undef KTRACE
259 int nsyscalls = sizeof (syscallnames) / sizeof (syscallnames[0]);
260
261 static const char *ptrace_ops[] = {
262         "PT_TRACE_ME",  "PT_READ_I",    "PT_READ_D",    "PT_READ_U",
263         "PT_WRITE_I",   "PT_WRITE_D",   "PT_WRITE_U",   "PT_CONTINUE",
264         "PT_KILL",      "PT_STEP",      "PT_ATTACH",    "PT_DETACH",
265 };
266
267 static void
268 ktrsyscall(struct ktr_syscall *ktr)
269 {
270         int narg = ktr->ktr_narg;
271         register_t *ip;
272
273         if (ktr->ktr_code >= nsyscalls || ktr->ktr_code < 0)
274                 (void)printf("[%d]", ktr->ktr_code);
275         else
276                 (void)printf("%s", syscallnames[ktr->ktr_code]);
277         ip = &ktr->ktr_args[0];
278         if (narg) {
279                 char c = '(';
280                 if (fancy) {
281
282 #define print_number(i,n,c) do {                      \
283         if (decimal)                                  \
284                 (void)printf("%c%ld", c, (long)*i);   \
285         else                                          \
286                 (void)printf("%c%#lx", c, (long)*i);  \
287         i++;                                          \
288         n--;                                          \
289         c = ',';                                      \
290         } while (0);
291
292                         if (ktr->ktr_code == SYS_ioctl) {
293                                 const char *cp;
294                                 print_number(ip,narg,c);
295                                 if ((cp = ioctlname(*ip)) != NULL)
296                                         (void)printf(",%s", cp);
297                                 else {
298                                         if (decimal)
299                                                 (void)printf(",%ld", (long)*ip);
300                                         else
301                                                 (void)printf(",%#lx ", (long)*ip);
302                                 }
303                                 c = ',';
304                                 ip++;
305                                 narg--;
306                         } else if (ktr->ktr_code == SYS_access) {
307                                 print_number(ip,narg,c);
308                                 (void)putchar(',');
309                                 accessmodename ((int)*ip);
310                                 ip++;
311                                 narg--;
312                         } else if (ktr->ktr_code == SYS_open) {
313                                 int     flags;
314                                 int     mode;
315                                 print_number(ip,narg,c);
316                                 flags = *ip;
317                                 mode = *++ip;
318                                 (void)putchar(',');
319                                 flagsandmodename (flags, mode, decimal);
320                                 ip++;
321                                 narg-=2;
322                         } else if (ktr->ktr_code == SYS_wait4) {
323                                 print_number(ip,narg,c);
324                                 print_number(ip,narg,c);
325                                 (void)putchar(',');
326                                 wait4optname ((int)*ip);
327                                 ip++;
328                                 narg--;
329                         } else if (ktr->ktr_code == SYS_chmod ||
330                                    ktr->ktr_code == SYS_fchmod ||
331                                    ktr->ktr_code == SYS_lchmod) {
332                                 print_number(ip,narg,c);
333                                 (void)putchar(',');
334                                 modename ((int)*ip);
335                                 ip++;
336                                 narg--;
337                         } else if (ktr->ktr_code == SYS_mknod) {
338                                 print_number(ip,narg,c);
339                                 (void)putchar(',');
340                                 modename ((int)*ip);
341                                 ip++;
342                                 narg--;
343                         } else if (ktr->ktr_code == SYS_getfsstat) {
344                                 print_number(ip,narg,c);
345                                 print_number(ip,narg,c);
346                                 (void)putchar(',');
347                                 getfsstatflagsname ((int)*ip);
348                                 ip++;
349                                 narg--;
350                         } else if (ktr->ktr_code == SYS_mount) {
351                                 print_number(ip,narg,c);
352                                 print_number(ip,narg,c);
353                                 (void)putchar(',');
354                                 mountflagsname ((int)*ip);
355                                 ip++;
356                                 narg--;
357                         } else if (ktr->ktr_code == SYS_unmount) {
358                                 print_number(ip,narg,c);
359                                 (void)putchar(',');
360                                 mountflagsname ((int)*ip);
361                                 ip++;
362                                 narg--;
363                         } else if (ktr->ktr_code == SYS_recvmsg ||
364                                    ktr->ktr_code == SYS_sendmsg) {
365                                 print_number(ip,narg,c);
366                                 print_number(ip,narg,c);
367                                 (void)putchar(',');
368                                 sendrecvflagsname ((int)*ip);
369                                 ip++;
370                                 narg--;
371                         } else if (ktr->ktr_code == SYS_recvfrom ||
372                                    ktr->ktr_code == SYS_sendto) {
373                                 print_number(ip,narg,c);
374                                 print_number(ip,narg,c);
375                                 print_number(ip,narg,c);
376                                 (void)putchar(',');
377                                 sendrecvflagsname ((int)*ip);
378                                 ip++;
379                                 narg--;
380                         } else if (ktr->ktr_code == SYS_chflags ||
381                                    ktr->ktr_code == SYS_fchflags) {
382                                 print_number(ip,narg,c);
383                                 (void)putchar(',');
384                                 modename((int)*ip);
385                                 ip++;
386                                 narg--;
387                         } else if (ktr->ktr_code == SYS_kill) {
388                                 print_number(ip,narg,c);
389                                 (void)putchar(',');
390                                 signame((int)*ip);
391                                 ip++;
392                                 narg--;
393                         } else if (ktr->ktr_code == SYS_reboot) {
394                                 (void)putchar('(');
395                                 rebootoptname((int)*ip);
396                                 ip++;
397                                 narg--;
398                         } else if (ktr->ktr_code == SYS_umask) {
399                                 (void)putchar('(');
400                                 modename((int)*ip);
401                                 ip++;
402                                 narg--;
403                         } else if (ktr->ktr_code == SYS_msync) {
404                                 print_number(ip,narg,c);
405                                 print_number(ip,narg,c);
406                                 (void)putchar(',');
407                                 msyncflagsname((int)*ip);
408                                 ip++;
409                                 narg--;
410                         } else if (ktr->ktr_code == SYS_mmap) {
411                                 print_number(ip,narg,c);
412                                 print_number(ip,narg,c);
413                                 (void)putchar(',');
414                                 mmapprotname ((int)*ip);
415                                 (void)putchar(',');
416                                 ip++;
417                                 narg--;
418                                 mmapflagsname ((int)*ip);
419                                 ip++;
420                                 narg--;
421                         } else if (ktr->ktr_code == SYS_mprotect) {
422                                 print_number(ip,narg,c);
423                                 print_number(ip,narg,c);
424                                 (void)putchar(',');
425                                 mmapprotname ((int)*ip);
426                                 ip++;
427                                 narg--;
428                         } else if (ktr->ktr_code == SYS_madvise) {
429                                 print_number(ip,narg,c);
430                                 print_number(ip,narg,c);
431                                 (void)putchar(',');
432                                 madvisebehavname((int)*ip);
433                                 ip++;
434                                 narg--;
435                         } else if (ktr->ktr_code == SYS_setpriority) {
436                                 (void)putchar('(');
437                                 prioname((int)*ip);
438                                 ip++;
439                                 narg--;
440                                 c = ',';
441                                 print_number(ip,narg,c);
442                                 print_number(ip,narg,c);
443                         } else if (ktr->ktr_code == SYS_fcntl) {
444                                 int cmd;
445                                 int arg;
446                                 print_number(ip,narg,c);
447                                 cmd = *ip;
448                                 arg = *++ip;
449                                 (void)putchar(',');
450                                 fcntlcmdname(cmd, arg, decimal);
451                                 ip++;
452                                 narg-=2;
453                         } else if (ktr->ktr_code == SYS_socket) {
454                                 (void)putchar('(');
455                                 sockdomainname((int)*ip);
456                                 ip++;
457                                 narg--;
458                                 (void)putchar(',');
459                                 socktypename((int)*ip);
460                                 ip++;
461                                 narg--;
462                                 c = ',';
463                         } else if (ktr->ktr_code == SYS_setsockopt ||
464                                    ktr->ktr_code == SYS_getsockopt) {
465                                 print_number(ip,narg,c);
466                                 (void)putchar(',');
467                                 sockoptlevelname((int)*ip, decimal);
468                                 ip++;
469                                 narg--;
470                                 (void)putchar(',');
471                                 sockoptname((int)*ip);
472                                 ip++;
473                                 narg--;
474                         } else if (ktr->ktr_code == SYS_lseek) {
475                                 print_number(ip,narg,c);
476                                 /* Hidden 'pad' argument, not in lseek(2) */
477                                 print_number(ip,narg,c);
478                                 print_number(ip,narg,c);
479                                 (void)putchar(',');
480                                 whencename ((int)*ip);
481                                 ip++;
482                                 narg--;
483                         } else if (ktr->ktr_code == SYS_flock) {
484                                 print_number(ip,narg,c);
485                                 (void)putchar(',');
486                                 flockname((int)*ip);
487                                 ip++;
488                                 narg--;
489                         } else if (ktr->ktr_code == SYS_mkfifo ||
490                                    ktr->ktr_code == SYS_mkdir) {
491                                 print_number(ip,narg,c);
492                                 (void)putchar(',');
493                                 modename((int)*ip);
494                                 ip++;
495                                 narg--;
496                         } else if (ktr->ktr_code == SYS_shutdown) {
497                                 print_number(ip,narg,c);
498                                 (void)putchar(',');
499                                 shutdownhowname((int)*ip);
500                                 ip++;
501                                 narg--;
502                         } else if (ktr->ktr_code == SYS_socketpair) {
503                                 (void)putchar('(');
504                                 sockdomainname((int)*ip);
505                                 ip++;
506                                 narg--;
507                                 (void)putchar(',');
508                                 socktypename((int)*ip);
509                                 ip++;
510                                 narg--;
511                                 c = ',';
512                         } else if (ktr->ktr_code == SYS_getrlimit ||
513                                    ktr->ktr_code == SYS_setrlimit) {
514                                 (void)putchar('(');
515                                 rlimitname((int)*ip);
516                                 ip++;
517                                 narg--;
518                                 c = ',';
519                         } else if (ktr->ktr_code == SYS_quotactl) {
520                                 print_number(ip,narg,c);
521                                 quotactlname((int)*ip);
522                                 ip++;
523                                 narg--;
524                                 c = ',';
525                         } else if (ktr->ktr_code == SYS_rtprio) {
526                                 (void)putchar('(');
527                                 rtprioname((int)*ip);
528                                 ip++;
529                                 narg--;
530                                 c = ',';
531                         } else if (ktr->ktr_code == SYS___semctl) {
532                                 print_number(ip,narg,c);
533                                 print_number(ip,narg,c);
534                                 semctlname((int)*ip);
535                                 ip++;
536                                 narg--;
537                         } else if (ktr->ktr_code == SYS_semget) {
538                                 print_number(ip,narg,c);
539                                 print_number(ip,narg,c);
540                                 semgetname((int)*ip);
541                                 ip++;
542                                 narg--;
543                         } else if (ktr->ktr_code == SYS_msgctl) {
544                                 print_number(ip,narg,c);
545                                 shmctlname((int)*ip);
546                                 ip++;
547                                 narg--;
548                         } else if (ktr->ktr_code == SYS_shmat) {
549                                 print_number(ip,narg,c);
550                                 print_number(ip,narg,c);
551                                 shmatname((int)*ip);
552                                 ip++;
553                                 narg--;
554                         } else if (ktr->ktr_code == SYS_shmctl) {
555                                 print_number(ip,narg,c);
556                                 shmctlname((int)*ip);
557                                 ip++;
558                                 narg--;
559                         } else if (ktr->ktr_code == SYS_minherit) {
560                                 print_number(ip,narg,c);
561                                 print_number(ip,narg,c);
562                                 minheritname((int)*ip);
563                                 ip++;
564                                 narg--;
565                         } else if (ktr->ktr_code == SYS_rfork) {
566                                 (void)putchar('(');
567                                 rforkname((int)*ip);
568                                 ip++;
569                                 narg--;
570                                 c = ',';
571                         } else if (ktr->ktr_code == SYS_lio_listio) {
572                                 (void)putchar('(');
573                                 lio_listioname((int)*ip);
574                                 ip++;
575                                 narg--;
576                                 c = ',';
577                         } else if (ktr->ktr_code == SYS_mlockall) {
578                                 (void)putchar('(');
579                                 mlockallname((int)*ip);
580                                 ip++;
581                                 narg--;
582                         } else if (ktr->ktr_code == SYS_sched_setscheduler) {
583                                 print_number(ip,narg,c);
584                                 schedpolicyname((int)*ip);
585                                 ip++;
586                                 narg--;
587                         } else if (ktr->ktr_code == SYS_sched_get_priority_max ||
588                                    ktr->ktr_code == SYS_sched_get_priority_min) {
589                                 (void)putchar('(');
590                                 schedpolicyname((int)*ip);
591                                 ip++;
592                                 narg--;
593                         } else if (ktr->ktr_code == SYS_sendfile) {
594                                 print_number(ip,narg,c);
595                                 print_number(ip,narg,c);
596                                 print_number(ip,narg,c);
597                                 print_number(ip,narg,c);
598                                 print_number(ip,narg,c);
599                                 print_number(ip,narg,c);
600                                 sendfileflagsname((int)*ip);
601                                 ip++;
602                                 narg--;
603                         } else if (ktr->ktr_code == SYS_kldsym) {
604                                 print_number(ip,narg,c);
605                                 kldsymcmdname((int)*ip);
606                                 ip++;
607                                 narg--;
608                         } else if (ktr->ktr_code == SYS_sigprocmask) {
609                                 (void)putchar('(');
610                                 sigprocmaskhowname((int)*ip);
611                                 ip++;
612                                 narg--;
613                                 c = ',';
614                         } else if (ktr->ktr_code == SYS___acl_get_file ||
615                                    ktr->ktr_code == SYS___acl_set_file ||
616                                    ktr->ktr_code == SYS___acl_get_fd ||
617                                    ktr->ktr_code == SYS___acl_set_fd ||
618                                    ktr->ktr_code == SYS___acl_delete_file ||
619                                    ktr->ktr_code == SYS___acl_delete_fd ||
620                                    ktr->ktr_code == SYS___acl_aclcheck_file ||
621                                    ktr->ktr_code == SYS___acl_aclcheck_fd) {
622                                 print_number(ip,narg,c);
623                                 acltypename((int)*ip);
624                                 ip++;
625                                 narg--;
626                         } else if (ktr->ktr_code == SYS_sigaction) {
627                                 (void)putchar('(');
628                                 signame((int)*ip);
629                                 ip++;
630                                 narg--;
631                                 c = ',';
632                         } else if (ktr->ktr_code == SYS_extattrctl) {
633                                 print_number(ip,narg,c);
634                                 extattrctlname((int)*ip);
635                                 ip++;
636                                 narg--;
637                         } else if (ktr->ktr_code == SYS_ptrace) {
638                                 if (*ip < (register_t)(sizeof(ptrace_ops) /
639                                     sizeof(ptrace_ops[0])) && *ip >= 0)
640                                         (void)printf("(%s", ptrace_ops[*ip]);
641 #ifdef PT_GETREGS
642                                 else if (*ip == PT_GETREGS)
643                                         (void)printf("(%s", "PT_GETREGS");
644 #endif
645 #ifdef PT_SETREGS
646                                 else if (*ip == PT_SETREGS)
647                                         (void)printf("(%s", "PT_SETREGS");
648 #endif
649 #ifdef PT_GETFPREGS
650                                 else if (*ip == PT_GETFPREGS)
651                                         (void)printf("(%s", "PT_GETFPREGS");
652 #endif
653 #ifdef PT_SETFPREGS
654                                 else if (*ip == PT_SETFPREGS)
655                                         (void)printf("(%s", "PT_SETFPREGS");
656 #endif
657 #ifdef PT_GETDBREGS
658                                 else if (*ip == PT_GETDBREGS)
659                                         (void)printf("(%s", "PT_GETDBREGS");
660 #endif
661 #ifdef PT_SETDBREGS
662                                 else if (*ip == PT_SETDBREGS)
663                                         (void)printf("(%s", "PT_SETDBREGS");
664 #endif
665                                 else
666                                         (void)printf("(%ld", (long)*ip);
667                                 c = ',';
668                                 ip++;
669                                 narg--;
670                         }
671                 }
672                 while (narg > 0) {
673                         print_number(ip,narg,c);
674                 }
675                 (void)putchar(')');
676         }
677         (void)putchar('\n');
678 }
679
680 static void
681 ktrsysret(struct ktr_sysret *ktr)
682 {
683         register_t ret = ktr->ktr_retval;
684         int error = ktr->ktr_error;
685         int code = ktr->ktr_code;
686
687         if (code >= nsyscalls || code < 0)
688                 (void)printf("[%d] ", code);
689         else
690                 (void)printf("%s ", syscallnames[code]);
691
692         if (error == 0) {
693                 if (fancy) {
694                         (void)printf("%d", ret);
695                         if (ret < 0 || ret > 9)
696                                 (void)printf("/%#lx", (long)ret);
697                 } else {
698                         if (decimal)
699                                 (void)printf("%ld", (long)ret);
700                         else
701                                 (void)printf("%#lx", (long)ret);
702                 }
703         } else if (error == ERESTART)
704                 (void)printf("RESTART");
705         else if (error == EJUSTRETURN)
706                 (void)printf("JUSTRETURN");
707         else {
708                 (void)printf("-1 errno %d", ktr->ktr_error);
709                 if (fancy)
710                         (void)printf(" %s", strerror(ktr->ktr_error));
711         }
712         (void)putchar('\n');
713 }
714
715 static void
716 ktrnamei(char *cp, int len)
717 {
718         (void)printf("\"%.*s\"\n", len, cp);
719 }
720
721 static void
722 ktrgenio(struct ktr_genio *ktr, int len)
723 {
724         int datalen = len - sizeof (struct ktr_genio);
725         char *dp = (char *)ktr + sizeof (struct ktr_genio);
726         char *cp;
727         int col = 0;
728         int width;
729         char visbuf[5];
730         static int screenwidth = 0;
731
732         if (screenwidth == 0) {
733                 struct winsize ws;
734
735                 if (fancy && ioctl(fileno(stderr), TIOCGWINSZ, &ws) != -1 &&
736                     ws.ws_col > 8)
737                         screenwidth = ws.ws_col;
738                 else
739                         screenwidth = 80;
740         }
741         printf("fd %d %s %d byte%s\n", ktr->ktr_fd,
742                 ktr->ktr_rw == UIO_READ ? "read" : "wrote", datalen,
743                 datalen == 1 ? "" : "s");
744         if (maxdata && datalen > maxdata)
745                 datalen = maxdata;
746         (void)printf("       \"");
747         col = 8;
748         for (;datalen > 0; datalen--, dp++) {
749                 (void) vis(visbuf, *dp, VIS_CSTYLE, *(dp+1));
750                 cp = visbuf;
751                 /*
752                  * Keep track of printables and
753                  * space chars (like fold(1)).
754                  */
755                 if (col == 0) {
756                         (void)putchar('\t');
757                         col = 8;
758                 }
759                 switch(*cp) {
760                 case '\n':
761                         col = 0;
762                         (void)putchar('\n');
763                         continue;
764                 case '\t':
765                         width = 8 - (col&07);
766                         break;
767                 default:
768                         width = strlen(cp);
769                 }
770                 if (col + width > (screenwidth-2)) {
771                         (void)printf("\\\n\t");
772                         col = 8;
773                 }
774                 col += width;
775                 do {
776                         (void)putchar(*cp++);
777                 } while (*cp);
778         }
779         if (col == 0)
780                 (void)printf("       ");
781         (void)printf("\"\n");
782 }
783
784 const char *signames[NSIG] = {
785         "NULL", "HUP", "INT", "QUIT", "ILL", "TRAP", "IOT",     /*  1 - 6  */
786         "EMT", "FPE", "KILL", "BUS", "SEGV", "SYS",             /*  7 - 12 */
787         "PIPE", "ALRM",  "TERM", "URG", "STOP", "TSTP",         /* 13 - 18 */
788         "CONT", "CHLD", "TTIN", "TTOU", "IO", "XCPU",           /* 19 - 24 */
789         "XFSZ", "VTALRM", "PROF", "WINCH", "29", "USR1",        /* 25 - 30 */
790         "USR2", NULL,                                           /* 31 - 32 */
791 };
792
793 static void
794 ktrpsig(struct ktr_psig *psig)
795 {
796         (void)printf("SIG%s ", signames[psig->signo]);
797         if (psig->action == SIG_DFL)
798                 (void)printf("SIG_DFL\n");
799         else
800                 (void)printf("caught handler=0x%lx mask=0x%x code=0x%x\n",
801                     (u_long)psig->action, psig->mask.__bits[0], psig->code);
802 }
803
804 static void
805 ktrcsw(struct ktr_csw *cs)
806 {
807         (void)printf("%s %s\n", cs->out ? "stop" : "resume",
808                 cs->user ? "user" : "kernel");
809 }
810
811 struct utrace_malloc {
812         void *p;
813         size_t s;
814         void *r;
815 };
816
817 static void
818 ktruser_malloc(int len __unused, unsigned char *p)
819 {
820         struct utrace_malloc *ut = (struct utrace_malloc *)p;
821
822         if (ut->p == NULL) {
823                 if (ut->s == 0 && ut->r == NULL)
824                         printf("malloc_init()\n");
825                 else
826                         printf("%p = malloc(%zu)\n", ut->r, ut->s);
827         } else {
828                 if (ut->s == 0)
829                         printf("free(%p)\n", ut->p);
830                 else
831                         printf("%p = realloc(%p, %zu)\n", ut->r, ut->p, ut->s);
832         }
833 }
834
835 static void
836 ktruser(int len, unsigned char *p)
837 {
838         if (len == sizeof(struct utrace_malloc)) {
839                 ktruser_malloc(len, p);
840                 return;
841         }
842
843         (void)printf("%d ", len);
844         while (len--)
845                 (void)printf(" %02x", *p++);
846         (void)printf("\n");
847 }
848
849 static void
850 usage(void)
851 {
852         (void)fprintf(stderr,
853             "usage: kdump [-dnlRT] [-f trfile] [-m maxdata] [-t [cnisuw]] [-p pid]\n");
854         exit(1);
855 }
856
857 static void
858 timevalsub(struct timeval *t1, struct timeval *t2)
859 {
860         t1->tv_sec -= t2->tv_sec;
861         t1->tv_usec -= t2->tv_usec;
862         timevalfix(t1);
863 }
864
865 static void
866 timevalfix(struct timeval *t1)
867 {
868         if (t1->tv_usec < 0) {
869                 t1->tv_sec--;
870                 t1->tv_usec += 1000000;
871         }
872         if (t1->tv_usec >= 1000000) {
873                 t1->tv_sec++;
874                 t1->tv_usec -= 1000000;
875         }
876 }