ktrdump: dump some device info
[dragonfly.git] / usr.bin / ktrdump / ktrdump.c
CommitLineData
9f815599
HP
1/*-
2 * Copyright (c) 2002 Jake Burkholder
3 * Copyright (c) 2004 Robert Watson
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
6e8dad34
MD
26 *
27 * $FreeBSD: src/usr.bin/ktrdump/ktrdump.c,v 1.10 2005/05/21 09:55:06 ru Exp $
5b107af3 28 * $DragonFly: src/usr.bin/ktrdump/ktrdump.c,v 1.13 2008/11/10 02:05:31 swildner Exp $
9f815599
HP
29 */
30
6e8dad34
MD
31#include <sys/cdefs.h>
32
33#include <sys/types.h>
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34#include <sys/ktr.h>
35#include <sys/mman.h>
36#include <sys/stat.h>
fa9963c9 37#include <sys/queue.h>
9f815599 38
e7c0dbba 39#include <ctype.h>
e726da56 40#include <devinfo.h>
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41#include <err.h>
42#include <fcntl.h>
43#include <kvm.h>
44#include <limits.h>
45#include <nlist.h>
46#include <stdint.h>
47#include <stdio.h>
48#include <stdlib.h>
49#include <string.h>
50#include <unistd.h>
e7c0dbba 51#include <evtr.h>
08cca235 52#include <stdarg.h>
9f815599 53
c2d873bd
MD
54struct ktr_buffer {
55 struct ktr_entry *ents;
56 int modified;
57 int reset;
58 int beg_idx; /* Beginning index */
59 int end_idx; /* Ending index */
60};
9f815599 61
ddca1582 62static struct nlist nl1[] = {
5b107af3
SW
63 { .n_name = "_ktr_version" },
64 { .n_name = "_ktr_entries" },
5b107af3
SW
65 { .n_name = "_ncpus" },
66 { .n_name = NULL }
b85aeba0 67};
ddca1582 68
b85aeba0 69static struct nlist nl2[] = {
5b107af3
SW
70 { .n_name = "_tsc_frequency" },
71 { .n_name = NULL }
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HP
72};
73
ddca1582
MD
74static struct nlist nl_version_ktr_idx[] = {
75 { .n_name = "_ktr_idx" },
76 { .n_name = "_ktr_buf" },
77 { .n_name = NULL }
78};
79
80static struct nlist nl_version_ktr_cpu[] = {
81 { .n_name = "_ktr_cpu" },
82 { .n_name = NULL }
83};
84
e7c0dbba
AE
85struct save_ctx {
86 char save_buf[512];
87 const void *save_kptr;
88};
89
90typedef void (*ktr_iter_cb_t)(void *, int, int, struct ktr_entry *, uint64_t *);
91
9f815599 92static int cflag;
e7c0dbba 93static int dflag;
9f815599 94static int fflag;
6e8dad34 95static int iflag;
c2d873bd 96static int lflag;
6e8dad34 97static int nflag;
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98static int qflag;
99static int rflag;
b8272239 100static int sflag;
9f815599 101static int tflag;
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MD
102static int xflag;
103static int pflag;
fa9963c9
MD
104static int Mflag;
105static int Nflag;
b8272239 106static double tsc_frequency;
dbf2e4fa 107static double correction_factor = 0.0;
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108
109static char corefile[PATH_MAX];
110static char execfile[PATH_MAX];
111
9f815599 112static char errbuf[_POSIX2_LINE_MAX];
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MD
113static int ncpus;
114static kvm_t *kd;
115static int entries_per_buf;
116static int fifo_mask;
ddca1582 117static int ktr_version;
c2d873bd
MD
118
119static void usage(void);
5b107af3 120static int earliest_ts(struct ktr_buffer *);
e7c0dbba 121static void dump_machine_info(evtr_t);
e726da56 122static void dump_device_info(evtr_t);
5b107af3
SW
123static void print_header(FILE *, int);
124static void print_entry(FILE *, int, int, struct ktr_entry *, u_int64_t *);
e7c0dbba
AE
125static void print_callback(void *, int, int, struct ktr_entry *, uint64_t *);
126static void dump_callback(void *, int, int, struct ktr_entry *, uint64_t *);
127static struct ktr_info *kvm_ktrinfo(void *, struct save_ctx *);
128static const char *kvm_string(const char *, struct save_ctx *);
5b107af3
SW
129static const char *trunc_path(const char *, int);
130static void read_symbols(const char *);
e7c0dbba 131static const char *address_to_symbol(void *, struct save_ctx *);
5b107af3 132static struct ktr_buffer *ktr_bufs_init(void);
ddca1582
MD
133static void get_indices(struct ktr_entry **, int *);
134static void load_bufs(struct ktr_buffer *, struct ktr_entry **, int *);
e7c0dbba
AE
135static void iterate_buf(FILE *, struct ktr_buffer *, int, u_int64_t *, ktr_iter_cb_t);
136static void iterate_bufs_timesorted(FILE *, struct ktr_buffer *, u_int64_t *, ktr_iter_cb_t);
08cca235 137static void kvmfprintf(FILE *fp, const char *ctl, va_list va);
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138
139/*
140 * Reads the ktr trace buffer from kernel memory and prints the trace entries.
141 */
142int
143main(int ac, char **av)
144{
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MD
145 struct ktr_buffer *ktr_bufs;
146 struct ktr_entry **ktr_kbuf;
e7c0dbba 147 ktr_iter_cb_t callback = &print_callback;
ddca1582 148 int *ktr_idx;
6e8dad34 149 FILE *fo;
e7c0dbba 150 void *ctx;
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MD
151 int64_t tts;
152 int *ktr_start_index;
9f815599 153 int c;
6e8dad34 154 int n;
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155
156 /*
157 * Parse commandline arguments.
158 */
6e8dad34 159 fo = stdout;
e7c0dbba 160 while ((c = getopt(ac, av, "acfinqrtxpslA:N:M:o:d")) != -1) {
9f815599 161 switch (c) {
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MD
162 case 'a':
163 cflag = 1;
164 iflag = 1;
429e7604 165 rflag = 1;
6e8dad34 166 xflag = 1;
6e8dad34 167 pflag = 1;
429e7604 168 sflag = 1;
6e8dad34 169 break;
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170 case 'c':
171 cflag = 1;
172 break;
e7c0dbba
AE
173 case 'd':
174 dflag = 1;
d65c27c0 175 sflag = 1;
e7c0dbba
AE
176 callback = &dump_callback;
177 break;
6e8dad34 178 case 'N':
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HP
179 if (strlcpy(execfile, optarg, sizeof(execfile))
180 >= sizeof(execfile))
181 errx(1, "%s: File name too long", optarg);
fa9963c9 182 Nflag = 1;
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183 break;
184 case 'f':
185 fflag = 1;
186 break;
c2d873bd
MD
187 case 'l':
188 lflag = 1;
189 break;
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HP
190 case 'i':
191 iflag = 1;
9f815599 192 break;
dbf2e4fa
MD
193 case 'A':
194 correction_factor = strtod(optarg, NULL);
195 break;
6e8dad34 196 case 'M':
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HP
197 if (strlcpy(corefile, optarg, sizeof(corefile))
198 >= sizeof(corefile))
199 errx(1, "%s: File name too long", optarg);
fa9963c9
MD
200 Mflag = 1;
201 break;
202 case 'n':
203 nflag = 1;
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204 break;
205 case 'o':
6e8dad34 206 if ((fo = fopen(optarg, "w")) == NULL)
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207 err(1, "%s", optarg);
208 break;
6e8dad34
MD
209 case 'p':
210 pflag++;
211 break;
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212 case 'q':
213 qflag++;
214 break;
215 case 'r':
216 rflag = 1;
217 break;
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MD
218 case 's':
219 sflag = 1; /* sort across the cpus */
220 break;
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HP
221 case 't':
222 tflag = 1;
223 break;
6e8dad34
MD
224 case 'x':
225 xflag = 1;
226 break;
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HP
227 case '?':
228 default:
229 usage();
230 }
fa9963c9 231 }
e7c0dbba
AE
232 ctx = fo;
233 if (dflag) {
234 ctx = evtr_open_write(fo);
235 if (!ctx) {
236 err(1, "Can't create event stream");
237 }
238 }
fa9963c9
MD
239 if (cflag + iflag + tflag + xflag + fflag + pflag == 0) {
240 cflag = 1;
241 iflag = 1;
242 tflag = 1;
fa9963c9
MD
243 pflag = 1;
244 }
dbf2e4fa
MD
245 if (correction_factor != 0.0 && (rflag == 0 || nflag)) {
246 fprintf(stderr, "Correction factor can only be applied with -r and without -n\n");
247 exit(1);
248 }
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HP
249 ac -= optind;
250 av += optind;
251 if (ac != 0)
252 usage();
253
254 /*
255 * Open our execfile and corefile, resolve needed symbols and read in
256 * the trace buffer.
257 */
fa9963c9
MD
258 if ((kd = kvm_openfiles(Nflag ? execfile : NULL,
259 Mflag ? corefile : NULL, NULL, O_RDONLY, errbuf)) == NULL)
9f815599 260 errx(1, "%s", errbuf);
ddca1582 261 if (kvm_nlist(kd, nl1) != 0)
6e8dad34 262 errx(1, "%s", kvm_geterr(kd));
ddca1582 263 if (kvm_read(kd, nl1[0].n_value, &ktr_version, sizeof(ktr_version)) == -1)
9f815599 264 errx(1, "%s", kvm_geterr(kd));
ddca1582 265 if (kvm_read(kd, nl1[2].n_value, &ncpus, sizeof(ncpus)) == -1)
6e8dad34 266 errx(1, "%s", kvm_geterr(kd));
b8272239 267 ktr_start_index = malloc(sizeof(*ktr_start_index) * ncpus);
ddca1582 268 if (ktr_version >= KTR_VERSION_WITH_FREQ && kvm_nlist(kd, nl2) == 0) {
b85aeba0 269 if (kvm_read(kd, nl2[0].n_value, &tts, sizeof(tts)) == -1)
b8272239
MD
270 errx(1, "%s", kvm_geterr(kd));
271 tsc_frequency = (double)tts;
272 }
ddca1582 273 if (ktr_version > KTR_VERSION)
b8272239 274 errx(1, "ktr version too high for us to handle");
ddca1582 275 if (kvm_read(kd, nl1[1].n_value, &entries_per_buf,
c2d873bd 276 sizeof(entries_per_buf)) == -1)
6e8dad34 277 errx(1, "%s", kvm_geterr(kd));
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MD
278 fifo_mask = entries_per_buf - 1;
279
280 printf("TSC frequency is %6.3f MHz\n", tsc_frequency / 1000000.0);
281
e7c0dbba
AE
282 if (dflag) {
283 dump_machine_info((evtr_t)ctx);
e726da56 284 dump_device_info((evtr_t)ctx);
e7c0dbba 285 }
ddca1582
MD
286 ktr_kbuf = calloc(ncpus, sizeof(*ktr_kbuf));
287 ktr_idx = calloc(ncpus, sizeof(*ktr_idx));
6e8dad34 288
fa9963c9
MD
289 if (nflag == 0)
290 read_symbols(Nflag ? execfile : NULL);
291
ddca1582
MD
292 if (ktr_version < KTR_VERSION_KTR_CPU) {
293 if (kvm_nlist(kd, nl_version_ktr_idx))
294 errx(1, "%s", kvm_geterr(kd));
295 } else {
296 if (kvm_nlist(kd, nl_version_ktr_cpu))
297 errx(1, "%s", kvm_geterr(kd));
298 }
299
300 get_indices(ktr_kbuf, ktr_idx);
9f815599 301
5b107af3 302 ktr_bufs = ktr_bufs_init();
b8272239 303
b8272239 304 if (sflag) {
c2d873bd
MD
305 u_int64_t last_timestamp = 0;
306 do {
ddca1582 307 load_bufs(ktr_bufs, ktr_kbuf, ktr_idx);
e7c0dbba
AE
308 iterate_bufs_timesorted(ctx, ktr_bufs, &last_timestamp,
309 callback);
c2d873bd
MD
310 if (lflag)
311 usleep(1000000 / 10);
312 } while (lflag);
b8272239 313 } else {
c2d873bd
MD
314 u_int64_t *last_timestamp = calloc(sizeof(u_int64_t), ncpus);
315 do {
ddca1582 316 load_bufs(ktr_bufs, ktr_kbuf, ktr_idx);
c2d873bd 317 for (n = 0; n < ncpus; ++n)
e7c0dbba
AE
318 iterate_buf(ctx, ktr_bufs, n, &last_timestamp[n],
319 callback);
c2d873bd
MD
320 if (lflag)
321 usleep(1000000 / 10);
322 } while (lflag);
6e8dad34 323 }
e7c0dbba
AE
324 if (dflag)
325 evtr_close(ctx);
6e8dad34
MD
326 return (0);
327}
9f815599 328
e7c0dbba 329static
e726da56
AE
330int
331dump_devinfo(struct devinfo_dev *dev, void *arg)
332{
333 struct evtr_event ev;
334 evtr_t evtr = (evtr_t)arg;
335 char *fmt = "#devicenames[\"%s\"] = %#lx";
336 char fmtdatabuf[sizeof(char *) + sizeof(devinfo_handle_t)];
337 char *fmtdata = fmtdatabuf;
338
339 if (!dev->dd_name[0])
340 return 0;
341 ev.type = EVTR_TYPE_PROBE;
342 ev.ts = 0;
343 ev.line = 0;
344 ev.file = NULL;
345 ev.cpu = -1;
346 ev.func = NULL;
347 ev.fmt = fmt;
348 ((char **)fmtdata)[0] = &dev->dd_name[0];
349 fmtdata += sizeof(char *);
350 ((devinfo_handle_t *)fmtdata)[0] = dev->dd_handle;
351 ev.fmtdata = fmtdatabuf;
352 ev.fmtdatalen = sizeof(fmtdatabuf);
353
354 if (evtr_dump_event(evtr, &ev)) {
355 err(1, evtr_errmsg(evtr));
356 }
357
358 return devinfo_foreach_device_child(dev, dump_devinfo, evtr);
359}
360
361static
362void
363dump_device_info(evtr_t evtr)
364{
365 struct devinfo_dev *root;
366 if (devinfo_init())
367 return;
368 if (!(root = devinfo_handle_to_device(DEVINFO_ROOT_DEVICE))) {
369 warn("can't find root device");
370 return;
371 }
372 devinfo_foreach_device_child(root, dump_devinfo, evtr);
373}
374
375static
e7c0dbba
AE
376void
377dump_machine_info(evtr_t evtr)
378{
379 struct evtr_event ev;
956f9b36 380 int i;
e7c0dbba 381
956f9b36
AE
382 bzero(&ev, sizeof(ev));
383 ev.type = EVTR_TYPE_SYSINFO;
e7c0dbba 384 ev.ncpus = ncpus;
e7c0dbba 385 evtr_dump_event(evtr, &ev);
956f9b36
AE
386 if (evtr_error(evtr)) {
387 err(1, evtr_errmsg(evtr));
388 }
389
390 for (i = 0; i < ncpus; ++i) {
391 bzero(&ev, sizeof(ev));
392 ev.type = EVTR_TYPE_CPUINFO;
393 ev.cpu = i;
394 ev.cpuinfo.freq = tsc_frequency;
395 evtr_dump_event(evtr, &ev);
396 if (evtr_error(evtr)) {
397 err(1, evtr_errmsg(evtr));
398 }
399 }
e7c0dbba
AE
400}
401
6e8dad34
MD
402static void
403print_header(FILE *fo, int row)
404{
c2d873bd 405 if (qflag == 0 && (u_int32_t)row % 20 == 0) {
6e8dad34 406 fprintf(fo, "%-6s ", "index");
9f815599 407 if (cflag)
6e8dad34
MD
408 fprintf(fo, "%-3s ", "cpu");
409 if (tflag || rflag)
410 fprintf(fo, "%-16s ", "timestamp");
fa9963c9
MD
411 if (xflag) {
412 if (nflag)
413 fprintf(fo, "%-10s %-10s", "caller2", "caller1");
414 else
415 fprintf(fo, "%-20s %-20s", "caller2", "caller1");
416 }
6e8dad34
MD
417 if (iflag)
418 fprintf(fo, "%-20s ", "ID");
9f815599 419 if (fflag)
6e8dad34
MD
420 fprintf(fo, "%10s%-30s ", "", "file and line");
421 if (pflag)
422 fprintf(fo, "%s", "trace");
423 fprintf(fo, "\n");
9f815599 424 }
6e8dad34 425}
9f815599 426
6e8dad34 427static void
5b107af3 428print_entry(FILE *fo, int n, int row, struct ktr_entry *entry,
c2d873bd 429 u_int64_t *last_timestamp)
6e8dad34
MD
430{
431 struct ktr_info *info = NULL;
e7c0dbba 432 static struct save_ctx nctx, pctx, fmtctx, symctx, infoctx;
6e8dad34 433
c2d873bd 434 fprintf(fo, " %06x ", row & 0x00FFFFFF);
6e8dad34
MD
435 if (cflag)
436 fprintf(fo, "%-3d ", n);
437 if (tflag || rflag) {
b8272239
MD
438 if (rflag && !nflag && tsc_frequency != 0.0) {
439 fprintf(fo, "%13.3f uS ",
c2d873bd 440 (double)(entry->ktr_timestamp - *last_timestamp) * 1000000.0 / tsc_frequency - correction_factor);
b8272239 441 } else if (rflag) {
5b107af3
SW
442 fprintf(fo, "%-16ju ",
443 (uintmax_t)(entry->ktr_timestamp - *last_timestamp));
b8272239 444 } else {
5b107af3
SW
445 fprintf(fo, "%-16ju ",
446 (uintmax_t)entry->ktr_timestamp);
b8272239 447 }
6e8dad34 448 }
fa9963c9
MD
449 if (xflag) {
450 if (nflag) {
451 fprintf(fo, "%p %p ",
452 entry->ktr_caller2, entry->ktr_caller1);
453 } else {
e7c0dbba
AE
454 fprintf(fo, "%-25s ",
455 address_to_symbol(entry->ktr_caller2, &symctx));
456 fprintf(fo, "%-25s ",
457 address_to_symbol(entry->ktr_caller1, &symctx));
fa9963c9
MD
458 }
459 }
6e8dad34 460 if (iflag) {
e7c0dbba 461 info = kvm_ktrinfo(entry->ktr_info, &infoctx);
6e8dad34 462 if (info)
e7c0dbba 463 fprintf(fo, "%-20s ", kvm_string(info->kf_name, &nctx));
6e8dad34
MD
464 else
465 fprintf(fo, "%-20s ", "<empty>");
466 }
467 if (fflag)
e7c0dbba
AE
468 fprintf(fo, "%34s:%-4d ",
469 trunc_path(kvm_string(entry->ktr_file, &pctx), 34),
470 entry->ktr_line);
6e8dad34
MD
471 if (pflag) {
472 if (info == NULL)
e7c0dbba 473 info = kvm_ktrinfo(entry->ktr_info, &infoctx);
90e76597 474 if (info)
e7c0dbba
AE
475 kvmfprintf(fo, kvm_string(info->kf_format, &fmtctx),
476 (void *)&entry->ktr_data);
6e8dad34
MD
477 }
478 fprintf(fo, "\n");
c2d873bd 479 *last_timestamp = entry->ktr_timestamp;
6e8dad34
MD
480}
481
482static
e7c0dbba
AE
483void
484print_callback(void *ctx, int n, int row, struct ktr_entry *entry, uint64_t *last_ts)
485{
486 FILE *fo = (FILE *)ctx;
487 print_header(fo, row);
488 print_entry(fo, n, row, entry, last_ts);
489}
490
491/*
492 * If free == 0, replace all (kvm) string pointers in fmtdata with pointers
493 * to user-allocated copies of the strings.
494 * If free != 0, free those pointers.
495 */
496static
497int
498mangle_string_ptrs(const char *fmt, uint8_t *fmtdata, int dofree)
499{
500 const char *f, *p;
501 size_t skipsize, intsz;
502 static struct save_ctx strctx;
503 int ret = 0;
504
505 for (f = fmt; f[0] != '\0'; ++f) {
506 if (f[0] != '%')
507 continue;
508 ++f;
509 skipsize = 0;
510 for (p = f; p[0]; ++p) {
511 int again = 0;
512 /*
513 * Eat flags. Notice this will accept duplicate
514 * flags.
515 */
516 switch (p[0]) {
517 case '#':
518 case '0':
519 case '-':
520 case ' ':
521 case '+':
522 case '\'':
523 again = !0;
524 break;
525 }
526 if (!again)
527 break;
528 }
529 /* Eat minimum field width, if any */
530 for (; isdigit(p[0]); ++p)
531 ;
532 if (p[0] == '.')
533 ++p;
534 /* Eat precision, if any */
535 for (; isdigit(p[0]); ++p)
536 ;
537 intsz = 0;
538 switch (p[0]) {
539 case 'l':
540 if (p[1] == 'l') {
541 ++p;
542 intsz = sizeof(long long);
543 } else {
544 intsz = sizeof(long);
545 }
546 break;
547 case 'j':
548 intsz = sizeof(intmax_t);
549 break;
550 case 't':
551 intsz = sizeof(ptrdiff_t);
552 break;
553 case 'z':
554 intsz = sizeof(size_t);
555 break;
556 default:
557 break;
558 }
559 if (intsz != 0)
560 ++p;
561 else
562 intsz = sizeof(int);
563
564 switch (p[0]) {
565 case 'd':
566 case 'i':
567 case 'o':
568 case 'u':
569 case 'x':
570 case 'X':
571 case 'c':
572 skipsize = intsz;
573 break;
574 case 'p':
575 skipsize = sizeof(void *);
576 break;
577 case 'f':
578 if (p[-1] == 'l')
579 skipsize = sizeof(double);
580 else
581 skipsize = sizeof(float);
582 break;
583 case 's':
584 if (dofree) {
585 char *t = ((char **)fmtdata)[0];
586 free(t);
587 skipsize = sizeof(char *);
588 } else {
589 char *t = strdup(kvm_string(((char **)fmtdata)[0],
590 &strctx));
591 ((const char **)fmtdata)[0] = t;
592
593 skipsize = sizeof(char *);
594 }
595 ++ret;
596 break;
597 default:
598 fprintf(stderr, "Unknown conversion specifier %c "
599 "in fmt starting with %s", p[0], f - 1);
600 return -1;
601 }
602 fmtdata += skipsize;
603 }
604 return ret;
605}
606
607static
608void
609dump_callback(void *ctx, int n, int row __unused, struct ktr_entry *entry,
610 uint64_t *last_ts __unused)
611{
612 evtr_t evtr = (evtr_t)ctx;
613 struct evtr_event ev;
614 static struct save_ctx pctx, fmtctx, infoctx;
615 struct ktr_info *ki;
616 int conv = 0; /* pointless */
617
618 ev.ts = entry->ktr_timestamp;
619 ev.type = EVTR_TYPE_PROBE;
620 ev.line = entry->ktr_line;
621 ev.file = kvm_string(entry->ktr_file, &pctx);
622 ev.func = NULL;
623 ev.cpu = n;
624 if ((ki = kvm_ktrinfo(entry->ktr_info, &infoctx))) {
625 ev.fmt = kvm_string(ki->kf_format, &fmtctx);
626 ev.fmtdata = entry->ktr_data;
627 if ((conv = mangle_string_ptrs(ev.fmt,
628 __DECONST(uint8_t *, ev.fmtdata),
629 0)) < 0)
630 errx(1, "Can't parse format string\n");
631 ev.fmtdatalen = ki->kf_data_size;
632 } else {
633 ev.fmt = ev.fmtdata = NULL;
634 ev.fmtdatalen = 0;
635 }
636 if (evtr_dump_event(evtr, &ev)) {
637 err(1, evtr_errmsg(evtr));
638 }
639 if (ev.fmtdata && conv) {
640 mangle_string_ptrs(ev.fmt, __DECONST(uint8_t *, ev.fmtdata),
641 !0);
642 }
643}
644
645static
6e8dad34 646struct ktr_info *
e7c0dbba 647kvm_ktrinfo(void *kptr, struct save_ctx *ctx)
6e8dad34 648{
e7c0dbba 649 struct ktr_info *ki = (void *)ctx->save_buf;
6e8dad34
MD
650
651 if (kptr == NULL)
652 return(NULL);
e7c0dbba
AE
653 if (ctx->save_kptr != kptr) {
654 if (kvm_read(kd, (uintptr_t)kptr, ki, sizeof(*ki)) == -1) {
655 bzero(&ki, sizeof(*ki));
9f815599 656 } else {
e7c0dbba 657 ctx->save_kptr = kptr;
6e8dad34
MD
658 }
659 }
e7c0dbba 660 return(ki);
6e8dad34
MD
661}
662
663static
664const char *
e7c0dbba 665kvm_string(const char *kptr, struct save_ctx *ctx)
6e8dad34 666{
5b107af3
SW
667 u_int l;
668 u_int n;
6e8dad34
MD
669
670 if (kptr == NULL)
671 return("?");
e7c0dbba
AE
672 if (ctx->save_kptr != (const void *)kptr) {
673 ctx->save_kptr = (const void *)kptr;
6e8dad34 674 l = 0;
e7c0dbba
AE
675 while (l < sizeof(ctx->save_buf) - 1) {
676 n = 256 - ((intptr_t)(kptr + l) & 255);
677 if (n > sizeof(ctx->save_buf) - l - 1)
678 n = sizeof(ctx->save_buf) - l - 1;
679 if (kvm_read(kd, (uintptr_t)(kptr + l), ctx->save_buf + l, n) < 0)
9f815599 680 break;
e7c0dbba
AE
681 while (l < sizeof(ctx->save_buf) && n) {
682 if (ctx->save_buf[l] == 0)
6e8dad34
MD
683 break;
684 --n;
685 ++l;
686 }
687 if (n)
688 break;
9f815599 689 }
e7c0dbba 690 ctx->save_buf[l] = 0;
9f815599 691 }
e7c0dbba 692 return(ctx->save_buf);
6e8dad34 693}
9f815599 694
6e8dad34
MD
695static
696const char *
697trunc_path(const char *str, int maxlen)
698{
699 int len = strlen(str);
700
701 if (len > maxlen)
702 return(str + len - maxlen);
703 else
704 return(str);
9f815599
HP
705}
706
fa9963c9
MD
707struct symdata {
708 TAILQ_ENTRY(symdata) link;
709 const char *symname;
710 char *symaddr;
711 char symtype;
712};
713
714static TAILQ_HEAD(symlist, symdata) symlist;
715static struct symdata *symcache;
716static char *symbegin;
717static char *symend;
718
719static
720void
5b107af3 721read_symbols(const char *file)
fa9963c9
MD
722{
723 char buf[256];
724 char cmd[256];
5b107af3 725 size_t buflen = sizeof(buf);
fa9963c9
MD
726 FILE *fp;
727 struct symdata *sym;
728 char *s1;
729 char *s2;
730 char *s3;
731
732 TAILQ_INIT(&symlist);
733
5b107af3 734 if (file == NULL) {
fa9963c9 735 if (sysctlbyname("kern.bootfile", buf, &buflen, NULL, 0) < 0)
5b107af3 736 file = "/boot/kernel";
fa9963c9 737 else
5b107af3 738 file = buf;
fa9963c9 739 }
5b107af3 740 snprintf(cmd, sizeof(cmd), "nm -n %s", file);
fa9963c9
MD
741 if ((fp = popen(cmd, "r")) != NULL) {
742 while (fgets(buf, sizeof(buf), fp) != NULL) {
743 s1 = strtok(buf, " \t\n");
744 s2 = strtok(NULL, " \t\n");
745 s3 = strtok(NULL, " \t\n");
746 if (s1 && s2 && s3) {
747 sym = malloc(sizeof(struct symdata));
748 sym->symaddr = (char *)strtoul(s1, NULL, 16);
749 sym->symtype = s2[0];
750 sym->symname = strdup(s3);
751 if (strcmp(s3, "kernbase") == 0)
752 symbegin = sym->symaddr;
753 if (strcmp(s3, "end") == 0)
754 symend = sym->symaddr;
755 TAILQ_INSERT_TAIL(&symlist, sym, link);
756 }
757 }
758 pclose(fp);
759 }
760 symcache = TAILQ_FIRST(&symlist);
761}
762
763static
764const char *
e7c0dbba 765address_to_symbol(void *kptr, struct save_ctx *ctx)
fa9963c9 766{
e7c0dbba
AE
767 char *buf = ctx->save_buf;
768 int size = sizeof(ctx->save_buf);
fa9963c9
MD
769
770 if (symcache == NULL ||
771 (char *)kptr < symbegin || (char *)kptr >= symend
772 ) {
e7c0dbba 773 snprintf(buf, size, "%p", kptr);
fa9963c9
MD
774 return(buf);
775 }
776 while ((char *)symcache->symaddr < (char *)kptr) {
777 if (TAILQ_NEXT(symcache, link) == NULL)
778 break;
779 symcache = TAILQ_NEXT(symcache, link);
780 }
781 while ((char *)symcache->symaddr > (char *)kptr) {
782 if (symcache != TAILQ_FIRST(&symlist))
783 symcache = TAILQ_PREV(symcache, symlist, link);
784 }
e7c0dbba 785 snprintf(buf, size, "%s+%d", symcache->symname,
fa9963c9
MD
786 (int)((char *)kptr - symcache->symaddr));
787 return(buf);
788}
789
c2d873bd
MD
790static
791struct ktr_buffer *
5b107af3 792ktr_bufs_init(void)
c2d873bd
MD
793{
794 struct ktr_buffer *ktr_bufs, *it;
795 int i;
796
797 ktr_bufs = malloc(sizeof(*ktr_bufs) * ncpus);
798 if (!ktr_bufs)
799 err(1, "can't allocate data structures\n");
800 for (i = 0; i < ncpus; ++i) {
801 it = ktr_bufs + i;
802 it->ents = malloc(sizeof(struct ktr_entry) * entries_per_buf);
803 if (it->ents == NULL)
804 err(1, "can't allocate data structures\n");
805 it->reset = 1;
806 it->beg_idx = -1;
807 it->end_idx = -1;
808 }
809 return ktr_bufs;
810}
811
812static
813void
ddca1582 814get_indices(struct ktr_entry **ktr_kbuf, int *ktr_idx)
c2d873bd 815{
ddca1582
MD
816 static struct ktr_cpu *ktr_cpus;
817 int i;
818
819 if (ktr_cpus == NULL)
820 ktr_cpus = malloc(sizeof(*ktr_cpus) * ncpus);
821
822 if (ktr_version < KTR_VERSION_KTR_CPU) {
823 if (kvm_read(kd, nl_version_ktr_idx[0].n_value, ktr_idx,
824 sizeof(*ktr_idx) * ncpus) == -1) {
825 errx(1, "%s", kvm_geterr(kd));
826 }
827 if (ktr_kbuf[0] == NULL) {
828 if (kvm_read(kd, nl_version_ktr_idx[1].n_value,
829 ktr_kbuf, sizeof(*ktr_kbuf) * ncpus) == -1) {
830 errx(1, "%s", kvm_geterr(kd));
831 }
832 }
833 } else {
ddca1582
MD
834 if (kvm_read(kd, nl_version_ktr_cpu[0].n_value,
835 ktr_cpus, sizeof(*ktr_cpus) * ncpus) == -1) {
836 errx(1, "%s", kvm_geterr(kd));
837 }
838 for (i = 0; i < ncpus; ++i) {
839 ktr_idx[i] = ktr_cpus[i].core.ktr_idx;
840 ktr_kbuf[i] = ktr_cpus[i].core.ktr_buf;
841 }
842 }
c2d873bd
MD
843}
844
845/*
846 * Get the trace buffer data from the kernel
847 */
848static
849void
ddca1582 850load_bufs(struct ktr_buffer *ktr_bufs, struct ktr_entry **kbufs, int *ktr_idx)
c2d873bd 851{
c2d873bd
MD
852 struct ktr_buffer *kbuf;
853 int i;
854
ddca1582 855 get_indices(kbufs, ktr_idx);
c2d873bd
MD
856 for (i = 0; i < ncpus; ++i) {
857 kbuf = &ktr_bufs[i];
ddca1582 858 if (ktr_idx[i] == kbuf->end_idx)
c2d873bd 859 continue;
ddca1582 860 kbuf->end_idx = ktr_idx[i];
c2d873bd
MD
861
862 /*
863 * If we do not have a notion of the beginning index, assume
864 * it is entries_per_buf before the ending index. Don't
865 * worry about underflows/negative numbers, the indices will
866 * be masked.
867 */
868 if (kbuf->reset) {
869 kbuf->beg_idx = kbuf->end_idx - entries_per_buf + 1;
870 kbuf->reset = 0;
871 }
872 if (kvm_read(kd, (uintptr_t)kbufs[i], ktr_bufs[i].ents,
873 sizeof(struct ktr_entry) * entries_per_buf)
874 == -1)
875 errx(1, "%s", kvm_geterr(kd));
876 kbuf->modified = 1;
877 kbuf->beg_idx = earliest_ts(kbuf);
878 }
879
880}
881
882/*
883 * Locate the earliest timestamp iterating backwards from end_idx, but
884 * not going further back then beg_idx. We have to do this because
885 * the kernel uses a circulating buffer.
886 */
887static
888int
889earliest_ts(struct ktr_buffer *buf)
890{
891 struct ktr_entry *save;
892 int count, scan, i, earliest;
893
894 count = 0;
895 earliest = buf->end_idx - 1;
896 save = &buf->ents[earliest & fifo_mask];
897 for (scan = buf->end_idx - 1; scan != buf->beg_idx -1; --scan) {
898 i = scan & fifo_mask;
10b4dde1
SS
899 if (buf->ents[i].ktr_timestamp <= save->ktr_timestamp &&
900 buf->ents[i].ktr_timestamp > 0)
c2d873bd
MD
901 earliest = scan;
902 /*
903 * We may have gotten so far behind that beg_idx wrapped
904 * more then once around the buffer. Just stop
905 */
906 if (++count == entries_per_buf)
907 break;
908 }
909 return earliest;
910}
911
912static
913void
e7c0dbba
AE
914iterate_buf(FILE *fo, struct ktr_buffer *ktr_bufs, int cpu,
915 u_int64_t *last_timestamp, ktr_iter_cb_t cb)
c2d873bd 916{
c2d873bd
MD
917 struct ktr_buffer *buf = ktr_bufs + cpu;
918
919 if (buf->modified == 0)
920 return;
921 if (*last_timestamp == 0) {
922 *last_timestamp =
923 buf->ents[buf->beg_idx & fifo_mask].ktr_timestamp;
924 }
925 while (buf->beg_idx != buf->end_idx) {
e7c0dbba
AE
926 cb(fo, cpu, buf->beg_idx,
927 &buf->ents[buf->beg_idx & fifo_mask],
928 last_timestamp);
c2d873bd
MD
929 ++buf->beg_idx;
930 }
931 buf->modified = 0;
932}
933
934static
935void
e7c0dbba
AE
936iterate_bufs_timesorted(FILE *fo, struct ktr_buffer *ktr_bufs,
937 u_int64_t *last_timestamp, ktr_iter_cb_t cb)
c2d873bd
MD
938{
939 struct ktr_entry *ent;
940 struct ktr_buffer *buf;
941 int n, bestn;
942 u_int64_t ts;
943 static int row = 0;
944
945 for (;;) {
946 ts = 0;
947 bestn = -1;
948 for (n = 0; n < ncpus; ++n) {
949 buf = ktr_bufs + n;
950 if (buf->beg_idx == buf->end_idx)
951 continue;
952 ent = &buf->ents[buf->beg_idx & fifo_mask];
953 if (ts == 0 || (ts >= ent->ktr_timestamp)) {
954 ts = ent->ktr_timestamp;
955 bestn = n;
956 }
957 }
958 if ((bestn < 0) || (ts < *last_timestamp))
959 break;
960 buf = ktr_bufs + bestn;
e7c0dbba
AE
961 cb(fo, bestn, row,
962 &buf->ents[buf->beg_idx & fifo_mask],
963 last_timestamp);
c2d873bd
MD
964 ++buf->beg_idx;
965 *last_timestamp = ts;
966 ++row;
967 }
968}
969
08cca235
MD
970static
971void
972kvmfprintf(FILE *fp, const char *ctl, va_list va)
973{
974 int n;
975 int is_long;
976 int is_done;
977 char fmt[256];
e7c0dbba
AE
978 static struct save_ctx strctx;
979 const char *s;
08cca235
MD
980
981 while (*ctl) {
982 for (n = 0; ctl[n]; ++n) {
983 fmt[n] = ctl[n];
984 if (ctl[n] == '%')
985 break;
986 }
987 if (n == 0) {
988 is_long = 0;
989 is_done = 0;
990 n = 1;
991 while (n < (int)sizeof(fmt)) {
992 fmt[n] = ctl[n];
993 fmt[n+1] = 0;
994
995 switch(ctl[n]) {
996 case 'p':
997 is_long = 1;
998 /* fall through */
999 case 'd':
1000 case 'u':
1001 case 'x':
1002 case 'o':
1003 case 'X':
1004 /*
1005 * Integral
1006 */
1007 switch(is_long) {
1008 case 0:
1009 fprintf(fp, fmt,
1010 va_arg(va, int));
1011 break;
1012 case 1:
1013 fprintf(fp, fmt,
1014 va_arg(va, long));
1015 break;
1016 case 2:
1017 fprintf(fp, fmt,
1018 va_arg(va, long long));
1019 break;
1020 case 3:
1021 fprintf(fp, fmt,
1022 va_arg(va, size_t));
1023 break;
1024 }
1025 ++n;
1026 is_done = 1;
1027 break;
1028 case 's':
1029 /*
1030 * String
1031 */
e7c0dbba
AE
1032 s = kvm_string(va_arg(va, char *), &strctx);
1033 fwrite(s, 1, strlen(s), fp);
08cca235
MD
1034 ++n;
1035 is_done = 1;
1036 break;
1037 case 'f':
1038 /*
1039 * Floating
1040 */
1041 fprintf(fp, fmt,
1042 va_arg(va, double));
1043 ++n;
1044 break;
1045 case 'j':
1046 is_long = 3;
1047 break;
1048 case 'l':
1049 if (is_long)
1050 is_long = 2;
1051 else
1052 is_long = 1;
1053 break;
1054 case '.':
1055 case '-':
1056 case '+':
1057 case '0':
1058 case '1':
1059 case '2':
1060 case '3':
1061 case '4':
1062 case '5':
1063 case '6':
1064 case '7':
1065 case '8':
1066 case '9':
1067 break;
1068 default:
1069 is_done = 1;
1070 break;
1071 }
1072 if (is_done)
1073 break;
1074 ++n;
1075 }
1076 } else {
1077 fmt[n] = 0;
1078 fprintf(fp, fmt, NULL);
1079 }
1080 ctl += n;
1081 }
1082}
1083
9f815599
HP
1084static void
1085usage(void)
1086{
08cca235
MD
1087 fprintf(stderr, "usage: ktrdump [-acfilnpqrstx] [-A factor] "
1088 "[-N execfile] [-M corefile] [-o outfile]\n");
6e8dad34 1089 exit(1);
9f815599 1090}