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Install dma(8) config files with mode 640 as root:mail to prevent ``normal''
[dragonfly.git] / usr.bin / kdump / kdump.c
blob902c570af31a23f0f78a281690ae4ea17cccb961
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 1.10 2008/01/07 01:35:43 corecode 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 int timestamp, decimal, fancy = 1, tail, maxdata = 64;
60 int fixedformat;
61 char *tracefile = DEF_TRACEFILE;
62 struct ktr_header ktr_header;
63
64 #define eqs(s1, s2) (strcmp((s1), (s2)) == 0)
65
66 main(int argc, char **argv)
67 {
68 int ch, col, ktrlen, size;
69 pid_t do_pid = -1;
70 register void *m;
71 int trpoints = ALL_POINTS;
72 char *cp;
73
74 (void) setlocale(LC_CTYPE, "");
75
76 while ((ch = getopt(argc,argv,"f:djlm:np:RTt:")) != -1)
77 switch((char)ch) {
78 case 'f':
79 tracefile = optarg;
80 break;
81 case 'j':
82 fixedformat = 1;
83 break;
84 case 'd':
85 decimal = 1;
86 break;
87 case 'l':
88 tail = 1;
89 break;
90 case 'm':
91 maxdata = atoi(optarg);
92 break;
93 case 'n':
94 fancy = 0;
95 break;
96 case 'p':
97 do_pid = strtoul(optarg, &cp, 0);
98 if (*cp != 0)
99 errx(1,"invalid number %s", optarg);
100 break;
101 case 'R':
102 timestamp = 2; /* relative timestamp */
103 break;
104 case 'T':
105 timestamp = 1;
106 break;
107 case 't':
108 trpoints = getpoints(optarg);
109 if (trpoints < 0)
110 errx(1, "unknown trace point in %s", optarg);
111 break;
112 default:
113 usage();
114 }
115
116 if (argc > optind)
117 usage();
118
119 m = (void *)malloc(size = 1025);
120 if (m == NULL)
121 errx(1, "%s", strerror(ENOMEM));
122 if (!freopen(tracefile, "r", stdin))
123 err(1, "%s", tracefile);
124 while (fread_tail(&ktr_header, sizeof(struct ktr_header), 1)) {
125 if (trpoints & (1 << ktr_header.ktr_type) &&
126 (do_pid == -1 || ktr_header.ktr_pid == do_pid))
127 col = dumpheader(&ktr_header);
128 else
129 col = -1;
130 if ((ktrlen = ktr_header.ktr_len) < 0)
131 errx(1, "bogus length 0x%x", ktrlen);
132 if (ktrlen > size) {
133 m = (void *)realloc(m, ktrlen+1);
134 if (m == NULL)
135 errx(1, "%s", strerror(ENOMEM));
136 size = ktrlen;
137 }
138 if (ktrlen && fread_tail(m, ktrlen, 1) == 0)
139 errx(1, "data too short");
140 if ((trpoints & (1<<ktr_header.ktr_type)) == 0)
141 continue;
142 if (col == -1)
143 continue;
144 switch (ktr_header.ktr_type) {
145 case KTR_SYSCALL:
146 ktrsyscall((struct ktr_syscall *)m);
147 break;
148 case KTR_SYSRET:
149 ktrsysret((struct ktr_sysret *)m);
150 break;
151 case KTR_NAMEI:
152 ktrnamei(m, ktrlen);
153 break;
154 case KTR_GENIO:
155 ktrgenio((struct ktr_genio *)m, ktrlen);
156 break;
157 case KTR_PSIG:
158 ktrpsig((struct ktr_psig *)m);
159 break;
160 case KTR_CSW:
161 ktrcsw((struct ktr_csw *)m);
162 break;
163 case KTR_USER:
164 ktruser(ktrlen, m);
165 break;
166 }
167 if (tail)
168 (void)fflush(stdout);
169 }
170 }
171
172 fread_tail(char *buf, int size, int num)
173 {
174 int i;
175
176 while ((i = fread(buf, size, num, stdin)) == 0 && tail) {
177 (void)sleep(1);
178 clearerr(stdin);
179 }
180 return (i);
181 }
182
183 dumpheader(struct ktr_header *kth)
184 {
185 static char unknown[64];
186 static struct timeval prevtime, temp;
187 char *type;
188 int col;
189
190 switch (kth->ktr_type) {
191 case KTR_SYSCALL:
192 type = "CALL";
193 break;
194 case KTR_SYSRET:
195 type = "RET ";
196 break;
197 case KTR_NAMEI:
198 type = "NAMI";
199 break;
200 case KTR_GENIO:
201 type = "GIO ";
202 break;
203 case KTR_PSIG:
204 type = "PSIG";
205 break;
206 case KTR_CSW:
207 type = "CSW";
208 break;
209 case KTR_USER:
210 type = "USER";
211 break;
212 default:
213 (void)sprintf(unknown, "UNKNOWN(%d)", kth->ktr_type);
214 type = unknown;
215 }
216
217 if (kth->ktr_tid || (kth->ktr_flags & KTRH_THREADED) || fixedformat)
218 col = printf("%5d:%-4d", kth->ktr_pid, kth->ktr_tid);
219 else
220 col = printf("%5d", kth->ktr_pid);
221 col += printf(" %-8.*s ", MAXCOMLEN, kth->ktr_comm);
222 if (timestamp) {
223 if (timestamp == 2) {
224 temp = kth->ktr_time;
225 timevalsub(&kth->ktr_time, &prevtime);
226 prevtime = temp;
227 }
228 col += printf("%ld.%06ld ",
229 kth->ktr_time.tv_sec, kth->ktr_time.tv_usec);
230 }
231 col += printf("%s ", type);
232 return col;
233 }
234
235 #include <sys/syscall.h>
236 #define KTRACE
237 #include <sys/kern/syscalls.c>
238 #undef KTRACE
239 int nsyscalls = sizeof (syscallnames) / sizeof (syscallnames[0]);
240
241 static char *ptrace_ops[] = {
242 "PT_TRACE_ME", "PT_READ_I", "PT_READ_D", "PT_READ_U",
243 "PT_WRITE_I", "PT_WRITE_D", "PT_WRITE_U", "PT_CONTINUE",
244 "PT_KILL", "PT_STEP", "PT_ATTACH", "PT_DETACH",
245 };
246
247 ktrsyscall(register struct ktr_syscall *ktr)
248 {
249 register narg = ktr->ktr_narg;
250 register register_t *ip;
251 char *ioctlname();
252
253 if (ktr->ktr_code >= nsyscalls || ktr->ktr_code < 0)
254 (void)printf("[%d]", ktr->ktr_code);
255 else
256 (void)printf("%s", syscallnames[ktr->ktr_code]);
257 ip = &ktr->ktr_args[0];
258 if (narg) {
259 char c = '(';
260 if (fancy) {
261
262 #define print_number(i,n,c) do { \
263 if (decimal) \
264 (void)printf("%c%ld", c, (long)*i); \
265 else \
266 (void)printf("%c%#lx", c, (long)*i); \
267 i++; \
268 n--; \
269 c = ','; \
270 } while (0);
271
272 if (ktr->ktr_code == SYS_ioctl) {
273 char *cp;
274 print_number(ip,narg,c);
275 if ((cp = ioctlname(*ip)) != NULL)
276 (void)printf(",%s", cp);
277 else {
278 if (decimal)
279 (void)printf(",%ld", (long)*ip);
280 else
281 (void)printf(",%#lx ", (long)*ip);
282 }
283 c = ',';
284 ip++;
285 narg--;
286 } else if (ktr->ktr_code == SYS_access) {
287 print_number(ip,narg,c);
288 (void)putchar(',');
289 accessmodename ((int)*ip);
290 ip++;
291 narg--;
292 } else if (ktr->ktr_code == SYS_open) {
293 int flags;
294 int mode;
295 print_number(ip,narg,c);
296 flags = *ip;
297 mode = *++ip;
298 (void)putchar(',');
299 flagsandmodename (flags, mode, decimal);
300 ip++;
301 narg-=2;
302 } else if (ktr->ktr_code == SYS_wait4) {
303 print_number(ip,narg,c);
304 print_number(ip,narg,c);
305 (void)putchar(',');
306 wait4optname ((int)*ip);
307 ip++;
308 narg--;
309 } else if (ktr->ktr_code == SYS_chmod ||
310 ktr->ktr_code == SYS_fchmod ||
311 ktr->ktr_code == SYS_lchmod) {
312 print_number(ip,narg,c);
313 (void)putchar(',');
314 modename ((int)*ip);
315 ip++;
316 narg--;
317 } else if (ktr->ktr_code == SYS_mknod) {
318 print_number(ip,narg,c);
319 (void)putchar(',');
320 modename ((int)*ip);
321 ip++;
322 narg--;
323 } else if (ktr->ktr_code == SYS_getfsstat) {
324 print_number(ip,narg,c);
325 print_number(ip,narg,c);
326 (void)putchar(',');
327 getfsstatflagsname ((int)*ip);
328 ip++;
329 narg--;
330 } else if (ktr->ktr_code == SYS_mount) {
331 print_number(ip,narg,c);
332 print_number(ip,narg,c);
333 (void)putchar(',');
334 mountflagsname ((int)*ip);
335 ip++;
336 narg--;
337 } else if (ktr->ktr_code == SYS_unmount) {
338 print_number(ip,narg,c);
339 (void)putchar(',');
340 mountflagsname ((int)*ip);
341 ip++;
342 narg--;
343 } else if (ktr->ktr_code == SYS_recvmsg ||
344 ktr->ktr_code == SYS_sendmsg) {
345 print_number(ip,narg,c);
346 print_number(ip,narg,c);
347 (void)putchar(',');
348 sendrecvflagsname ((int)*ip);
349 ip++;
350 narg--;
351 } else if (ktr->ktr_code == SYS_recvfrom ||
352 ktr->ktr_code == SYS_sendto) {
353 print_number(ip,narg,c);
354 print_number(ip,narg,c);
355 print_number(ip,narg,c);
356 (void)putchar(',');
357 sendrecvflagsname ((int)*ip);
358 ip++;
359 narg--;
360 } else if (ktr->ktr_code == SYS_chflags ||
361 ktr->ktr_code == SYS_fchflags) {
362 print_number(ip,narg,c);
363 (void)putchar(',');
364 modename((int)*ip);
365 ip++;
366 narg--;
367 } else if (ktr->ktr_code == SYS_kill) {
368 print_number(ip,narg,c);
369 (void)putchar(',');
370 signame((int)*ip);
371 ip++;
372 narg--;
373 } else if (ktr->ktr_code == SYS_reboot) {
374 (void)putchar('(');
375 rebootoptname((int)*ip);
376 ip++;
377 narg--;
378 } else if (ktr->ktr_code == SYS_umask) {
379 (void)putchar('(');
380 modename((int)*ip);
381 ip++;
382 narg--;
383 } else if (ktr->ktr_code == SYS_msync) {
384 print_number(ip,narg,c);
385 print_number(ip,narg,c);
386 (void)putchar(',');
387 msyncflagsname((int)*ip);
388 ip++;
389 narg--;
390 } else if (ktr->ktr_code == SYS_mmap) {
391 print_number(ip,narg,c);
392 print_number(ip,narg,c);
393 (void)putchar(',');
394 mmapprotname ((int)*ip);
395 (void)putchar(',');
396 ip++;
397 narg--;
398 mmapflagsname ((int)*ip);
399 ip++;
400 narg--;
401 } else if (ktr->ktr_code == SYS_mprotect) {
402 print_number(ip,narg,c);
403 print_number(ip,narg,c);
404 (void)putchar(',');
405 mmapprotname ((int)*ip);
406 ip++;
407 narg--;
408 } else if (ktr->ktr_code == SYS_madvise) {
409 print_number(ip,narg,c);
410 print_number(ip,narg,c);
411 (void)putchar(',');
412 madvisebehavname((int)*ip);
413 ip++;
414 narg--;
415 } else if (ktr->ktr_code == SYS_setpriority) {
416 print_number(ip,narg,c);
417 print_number(ip,narg,c);
418 (void)putchar(',');
419 prioname((int)*ip);
420 ip++;
421 narg--;
422 } else if (ktr->ktr_code == SYS_fcntl) {
423 int cmd;
424 int arg;
425 print_number(ip,narg,c);
426 cmd = *ip;
427 arg = *++ip;
428 (void)putchar(',');
429 fcntlcmdname(cmd, arg, decimal);
430 ip++;
431 narg-=2;
432 } else if (ktr->ktr_code == SYS_socket) {
433 (void)putchar('(');
434 sockdomainname((int)*ip);
435 ip++;
436 narg--;
437 (void)putchar(',');
438 socktypename((int)*ip);
439 ip++;
440 narg--;
441 c = ',';
442 } else if (ktr->ktr_code == SYS_setsockopt ||
443 ktr->ktr_code == SYS_getsockopt) {
444 print_number(ip,narg,c);
445 (void)putchar(',');
446 sockoptlevelname((int)*ip, decimal);
447 ip++;
448 narg--;
449 (void)putchar(',');
450 sockoptname((int)*ip);
451 ip++;
452 narg--;
453 } else if (ktr->ktr_code == SYS_lseek) {
454 print_number(ip,narg,c);
455 /* Hidden 'pad' argument, not in lseek(2) */
456 print_number(ip,narg,c);
457 print_number(ip,narg,c);
458 (void)putchar(',');
459 whencename ((int)*ip);
460 ip++;
461 narg--;
462 } else if (ktr->ktr_code == SYS_flock) {
463 print_number(ip,narg,c);
464 (void)putchar(',');
465 flockname((int)*ip);
466 ip++;
467 narg--;
468 } else if (ktr->ktr_code == SYS_mkfifo ||
469 ktr->ktr_code == SYS_mkdir) {
470 print_number(ip,narg,c);
471 (void)putchar(',');
472 modename((int)*ip);
473 ip++;
474 narg--;
475 } else if (ktr->ktr_code == SYS_shutdown) {
476 print_number(ip,narg,c);
477 (void)putchar(',');
478 shutdownhowname((int)*ip);
479 ip++;
480 narg--;
481 } else if (ktr->ktr_code == SYS_socketpair) {
482 (void)putchar('(');
483 sockdomainname((int)*ip);
484 ip++;
485 narg--;
486 (void)putchar(',');
487 socktypename((int)*ip);
488 ip++;
489 narg--;
490 c = ',';
491 } else if (ktr->ktr_code == SYS_getrlimit ||
492 ktr->ktr_code == SYS_setrlimit) {
493 (void)putchar('(');
494 rlimitname((int)*ip);
495 ip++;
496 narg--;
497 c = ',';
498 } else if (ktr->ktr_code == SYS_quotactl) {
499 print_number(ip,narg,c);
500 quotactlname((int)*ip);
501 ip++;
502 narg--;
503 c = ',';
504 } else if (ktr->ktr_code == SYS_rtprio) {
505 (void)putchar('(');
506 rtprioname((int)*ip);
507 ip++;
508 narg--;
509 c = ',';
510 } else if (ktr->ktr_code == SYS___semctl) {
511 print_number(ip,narg,c);
512 print_number(ip,narg,c);
513 semctlname((int)*ip);
514 ip++;
515 narg--;
516 } else if (ktr->ktr_code == SYS_semget) {
517 print_number(ip,narg,c);
518 print_number(ip,narg,c);
519 semgetname((int)*ip);
520 ip++;
521 narg--;
522 } else if (ktr->ktr_code == SYS_msgctl) {
523 print_number(ip,narg,c);
524 shmctlname((int)*ip);
525 ip++;
526 narg--;
527 } else if (ktr->ktr_code == SYS_shmat) {
528 print_number(ip,narg,c);
529 print_number(ip,narg,c);
530 shmatname((int)*ip);
531 ip++;
532 narg--;
533 } else if (ktr->ktr_code == SYS_shmctl) {
534 print_number(ip,narg,c);
535 shmctlname((int)*ip);
536 ip++;
537 narg--;
538 } else if (ktr->ktr_code == SYS_minherit) {
539 print_number(ip,narg,c);
540 print_number(ip,narg,c);
541 minheritname((int)*ip);
542 ip++;
543 narg--;
544 } else if (ktr->ktr_code == SYS_rfork) {
545 (void)putchar('(');
546 rforkname((int)*ip);
547 ip++;
548 narg--;
549 c = ',';
550 } else if (ktr->ktr_code == SYS_lio_listio) {
551 (void)putchar('(');
552 lio_listioname((int)*ip);
553 ip++;
554 narg--;
555 c = ',';
556 } else if (ktr->ktr_code == SYS_mlockall) {
557 (void)putchar('(');
558 mlockallname((int)*ip);
559 ip++;
560 narg--;
561 } else if (ktr->ktr_code == SYS_sched_setscheduler) {
562 print_number(ip,narg,c);
563 schedpolicyname((int)*ip);
564 ip++;
565 narg--;
566 } else if (ktr->ktr_code == SYS_sched_get_priority_max ||
567 ktr->ktr_code == SYS_sched_get_priority_min) {
568 (void)putchar('(');
569 schedpolicyname((int)*ip);
570 ip++;
571 narg--;
572 } else if (ktr->ktr_code == SYS_sendfile) {
573 print_number(ip,narg,c);
574 print_number(ip,narg,c);
575 print_number(ip,narg,c);
576 print_number(ip,narg,c);
577 print_number(ip,narg,c);
578 print_number(ip,narg,c);
579 sendfileflagsname((int)*ip);
580 ip++;
581 narg--;
582 } else if (ktr->ktr_code == SYS_kldsym) {
583 print_number(ip,narg,c);
584 kldsymcmdname((int)*ip);
585 ip++;
586 narg--;
587 } else if (ktr->ktr_code == SYS_sigprocmask) {
588 (void)putchar('(');
589 sigprocmaskhowname((int)*ip);
590 ip++;
591 narg--;
592 c = ',';
593 } else if (ktr->ktr_code == SYS___acl_get_file ||
594 ktr->ktr_code == SYS___acl_set_file ||
595 ktr->ktr_code == SYS___acl_get_fd ||
596 ktr->ktr_code == SYS___acl_set_fd ||
597 ktr->ktr_code == SYS___acl_delete_file ||
598 ktr->ktr_code == SYS___acl_delete_fd ||
599 ktr->ktr_code == SYS___acl_aclcheck_file ||
600 ktr->ktr_code == SYS___acl_aclcheck_fd) {
601 print_number(ip,narg,c);
602 acltypename((int)*ip);
603 ip++;
604 narg--;
605 } else if (ktr->ktr_code == SYS_sigaction) {
606 (void)putchar('(');
607 signame((int)*ip);
608 ip++;
609 narg--;
610 c = ',';
611 } else if (ktr->ktr_code == SYS_extattrctl) {
612 print_number(ip,narg,c);
613 extattrctlname((int)*ip);
614 ip++;
615 narg--;
616 } else if (ktr->ktr_code == SYS_ptrace) {
617 if (*ip < sizeof(ptrace_ops) /
618 sizeof(ptrace_ops[0]) && *ip >= 0)
619 (void)printf("(%s", ptrace_ops[*ip]);
620 #ifdef PT_GETREGS
621 else if (*ip == PT_GETREGS)
622 (void)printf("(%s", "PT_GETREGS");
623 #endif
624 #ifdef PT_SETREGS
625 else if (*ip == PT_SETREGS)
626 (void)printf("(%s", "PT_SETREGS");
627 #endif
628 #ifdef PT_GETFPREGS
629 else if (*ip == PT_GETFPREGS)
630 (void)printf("(%s", "PT_GETFPREGS");
631 #endif
632 #ifdef PT_SETFPREGS
633 else if (*ip == PT_SETFPREGS)
634 (void)printf("(%s", "PT_SETFPREGS");
635 #endif
636 #ifdef PT_GETDBREGS
637 else if (*ip == PT_GETDBREGS)
638 (void)printf("(%s", "PT_GETDBREGS");
639 #endif
640 #ifdef PT_SETDBREGS
641 else if (*ip == PT_SETDBREGS)
642 (void)printf("(%s", "PT_SETDBREGS");
643 #endif
644 else
645 (void)printf("(%ld", (long)*ip);
646 c = ',';
647 ip++;
648 narg--;
649 }
650 }
651 while (narg) {
652 print_number(ip,narg,c);
653 }
654 (void)putchar(')');
655 }
656 (void)putchar('\n');
657 }
658
659 ktrsysret(struct ktr_sysret *ktr)
660 {
661 register register_t ret = ktr->ktr_retval;
662 register int error = ktr->ktr_error;
663 register int code = ktr->ktr_code;
664
665 if (code >= nsyscalls || code < 0)
666 (void)printf("[%d] ", code);
667 else
668 (void)printf("%s ", syscallnames[code]);
669
670 if (error == 0) {
671 if (fancy) {
672 (void)printf("%d", ret);
673 if (ret < 0 || ret > 9)
674 (void)printf("/%#lx", (long)ret);
675 } else {
676 if (decimal)
677 (void)printf("%ld", (long)ret);
678 else
679 (void)printf("%#lx", (long)ret);
680 }
681 } else if (error == ERESTART)
682 (void)printf("RESTART");
683 else if (error == EJUSTRETURN)
684 (void)printf("JUSTRETURN");
685 else {
686 (void)printf("-1 errno %d", ktr->ktr_error);
687 if (fancy)
688 (void)printf(" %s", strerror(ktr->ktr_error));
689 }
690 (void)putchar('\n');
691 }
692
693 ktrnamei(char *cp, int len)
694 {
695 (void)printf("\"%.*s\"\n", len, cp);
696 }
697
698 ktrgenio(struct ktr_genio *ktr, int len)
699 {
700 register int datalen = len - sizeof (struct ktr_genio);
701 register char *dp = (char *)ktr + sizeof (struct ktr_genio);
702 register char *cp;
703 register int col = 0;
704 register width;
705 char visbuf[5];
706 static screenwidth = 0;
707
708 if (screenwidth == 0) {
709 struct winsize ws;
710
711 if (fancy && ioctl(fileno(stderr), TIOCGWINSZ, &ws) != -1 &&
712 ws.ws_col > 8)
713 screenwidth = ws.ws_col;
714 else
715 screenwidth = 80;
716 }
717 printf("fd %d %s %d byte%s\n", ktr->ktr_fd,
718 ktr->ktr_rw == UIO_READ ? "read" : "wrote", datalen,
719 datalen == 1 ? "" : "s");
720 if (maxdata && datalen > maxdata)
721 datalen = maxdata;
722 (void)printf(" \"");
723 col = 8;
724 for (;datalen > 0; datalen--, dp++) {
725 (void) vis(visbuf, *dp, VIS_CSTYLE, *(dp+1));
726 cp = visbuf;
727 /*
728 * Keep track of printables and
729 * space chars (like fold(1)).
730 */
731 if (col == 0) {
732 (void)putchar('\t');
733 col = 8;
734 }
735 switch(*cp) {
736 case '\n':
737 col = 0;
738 (void)putchar('\n');
739 continue;
740 case '\t':
741 width = 8 - (col&07);
742 break;
743 default:
744 width = strlen(cp);
745 }
746 if (col + width > (screenwidth-2)) {
747 (void)printf("\\\n\t");
748 col = 8;
749 }
750 col += width;
751 do {
752 (void)putchar(*cp++);
753 } while (*cp);
754 }
755 if (col == 0)
756 (void)printf(" ");
757 (void)printf("\"\n");
758 }
759
760 char *signames[NSIG] = {
761 "NULL", "HUP", "INT", "QUIT", "ILL", "TRAP", "IOT", /* 1 - 6 */
762 "EMT", "FPE", "KILL", "BUS", "SEGV", "SYS", /* 7 - 12 */
763 "PIPE", "ALRM", "TERM", "URG", "STOP", "TSTP", /* 13 - 18 */
764 "CONT", "CHLD", "TTIN", "TTOU", "IO", "XCPU", /* 19 - 24 */
765 "XFSZ", "VTALRM", "PROF", "WINCH", "29", "USR1", /* 25 - 30 */
766 "USR2", NULL, /* 31 - 32 */
767 };
768
769 ktrpsig(struct ktr_psig *psig)
770 {
771 (void)printf("SIG%s ", signames[psig->signo]);
772 if (psig->action == SIG_DFL)
773 (void)printf("SIG_DFL\n");
774 else
775 (void)printf("caught handler=0x%lx mask=0x%x code=0x%x\n",
776 (u_long)psig->action, psig->mask, psig->code);
777 }
778
779 ktrcsw(struct ktr_csw *cs)
780 {
781 (void)printf("%s %s\n", cs->out ? "stop" : "resume",
782 cs->user ? "user" : "kernel");
783 }
784
785 ktruser(int len, unsigned char *p)
786 {
787 (void)printf("%d ", len);
788 while (len--)
789 (void)printf(" %02x", *p++);
790 (void)printf("\n");
791
792 }
793
794 usage(void)
795 {
796 (void)fprintf(stderr,
797 "usage: kdump [-dnlRT] [-f trfile] [-m maxdata] [-t [cnisuw]] [-p pid]\n");
798 exit(1);
799 }
800
801 timevalsub(struct timeval *t1, struct timeval *t2)
802 {
803 t1->tv_sec -= t2->tv_sec;
804 t1->tv_usec -= t2->tv_usec;
805 timevalfix(t1);
806 }
807
808 timevalfix(struct timeval *t1)
809 {
810 if (t1->tv_usec < 0) {
811 t1->tv_sec--;
812 t1->tv_usec += 1000000;
813 }
814 if (t1->tv_usec >= 1000000) {
815 t1->tv_sec++;
816 t1->tv_usec -= 1000000;
817 }
818 }
DragonFly BSD