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8322 nl: misleading-indentation
[unleashed/tickless.git] / usr / src / lib / libdtrace / common / dt_printf.c
blob7bd91b9f48fe8e7fbfc96434dc34f7c8f8d9102a
1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Copyright (c) 2013, Joyent, Inc. All rights reserved.
25 * Copyright (c) 2013 by Delphix. All rights reserved.
26 */
27
28 #include <sys/sysmacros.h>
29 #include <strings.h>
30 #include <stdlib.h>
31 #include <alloca.h>
32 #include <assert.h>
33 #include <ctype.h>
34 #include <errno.h>
35 #include <limits.h>
36 #include <sys/socket.h>
37 #include <netdb.h>
38 #include <netinet/in.h>
39 #include <arpa/inet.h>
40 #include <arpa/nameser.h>
41
42 #include <dt_printf.h>
43 #include <dt_string.h>
44 #include <dt_impl.h>
45
46 /*ARGSUSED*/
47 static int
48 pfcheck_addr(dt_pfargv_t *pfv, dt_pfargd_t *pfd, dt_node_t *dnp)
49 {
50 return (dt_node_is_pointer(dnp) || dt_node_is_integer(dnp));
51 }
52
53 /*ARGSUSED*/
54 static int
55 pfcheck_kaddr(dt_pfargv_t *pfv, dt_pfargd_t *pfd, dt_node_t *dnp)
56 {
57 return (dt_node_is_pointer(dnp) || dt_node_is_integer(dnp) ||
58 dt_node_is_symaddr(dnp));
59 }
60
61 /*ARGSUSED*/
62 static int
63 pfcheck_uaddr(dt_pfargv_t *pfv, dt_pfargd_t *pfd, dt_node_t *dnp)
64 {
65 dtrace_hdl_t *dtp = pfv->pfv_dtp;
66 dt_ident_t *idp = dt_idhash_lookup(dtp->dt_macros, "target");
67
68 if (dt_node_is_usymaddr(dnp))
69 return (1);
70
71 if (idp == NULL || idp->di_id == 0)
72 return (0);
73
74 return (dt_node_is_pointer(dnp) || dt_node_is_integer(dnp));
75 }
76
77 /*ARGSUSED*/
78 static int
79 pfcheck_stack(dt_pfargv_t *pfv, dt_pfargd_t *pfd, dt_node_t *dnp)
80 {
81 return (dt_node_is_stack(dnp));
82 }
83
84 /*ARGSUSED*/
85 static int
86 pfcheck_time(dt_pfargv_t *pfv, dt_pfargd_t *pfd, dt_node_t *dnp)
87 {
88 return (dt_node_is_integer(dnp) &&
89 dt_node_type_size(dnp) == sizeof (uint64_t));
90 }
91
92 /*ARGSUSED*/
93 static int
94 pfcheck_str(dt_pfargv_t *pfv, dt_pfargd_t *pfd, dt_node_t *dnp)
95 {
96 ctf_file_t *ctfp;
97 ctf_encoding_t e;
98 ctf_arinfo_t r;
99 ctf_id_t base;
100 uint_t kind;
101
102 if (dt_node_is_string(dnp))
103 return (1);
104
105 ctfp = dnp->dn_ctfp;
106 base = ctf_type_resolve(ctfp, dnp->dn_type);
107 kind = ctf_type_kind(ctfp, base);
108
109 return (kind == CTF_K_ARRAY && ctf_array_info(ctfp, base, &r) == 0 &&
110 (base = ctf_type_resolve(ctfp, r.ctr_contents)) != CTF_ERR &&
111 ctf_type_encoding(ctfp, base, &e) == 0 && IS_CHAR(e));
112 }
113
114 /*ARGSUSED*/
115 static int
116 pfcheck_wstr(dt_pfargv_t *pfv, dt_pfargd_t *pfd, dt_node_t *dnp)
117 {
118 ctf_file_t *ctfp = dnp->dn_ctfp;
119 ctf_id_t base = ctf_type_resolve(ctfp, dnp->dn_type);
120 uint_t kind = ctf_type_kind(ctfp, base);
121
122 ctf_encoding_t e;
123 ctf_arinfo_t r;
124
125 return (kind == CTF_K_ARRAY && ctf_array_info(ctfp, base, &r) == 0 &&
126 (base = ctf_type_resolve(ctfp, r.ctr_contents)) != CTF_ERR &&
127 ctf_type_kind(ctfp, base) == CTF_K_INTEGER &&
128 ctf_type_encoding(ctfp, base, &e) == 0 && e.cte_bits == 32);
129 }
130
131 /*ARGSUSED*/
132 static int
133 pfcheck_csi(dt_pfargv_t *pfv, dt_pfargd_t *pfd, dt_node_t *dnp)
134 {
135 return (dt_node_is_integer(dnp) &&
136 dt_node_type_size(dnp) <= sizeof (int));
137 }
138
139 /*ARGSUSED*/
140 static int
141 pfcheck_fp(dt_pfargv_t *pfv, dt_pfargd_t *pfd, dt_node_t *dnp)
142 {
143 return (dt_node_is_float(dnp));
144 }
145
146 /*ARGSUSED*/
147 static int
148 pfcheck_xint(dt_pfargv_t *pfv, dt_pfargd_t *pfd, dt_node_t *dnp)
149 {
150 return (dt_node_is_integer(dnp));
151 }
152
153 /*ARGSUSED*/
154 static int
155 pfcheck_dint(dt_pfargv_t *pfv, dt_pfargd_t *pfd, dt_node_t *dnp)
156 {
157 if (dnp->dn_flags & DT_NF_SIGNED)
158 pfd->pfd_fmt[strlen(pfd->pfd_fmt) - 1] = 'i';
159 else
160 pfd->pfd_fmt[strlen(pfd->pfd_fmt) - 1] = 'u';
161
162 return (dt_node_is_integer(dnp));
163 }
164
165 /*ARGSUSED*/
166 static int
167 pfcheck_xshort(dt_pfargv_t *pfv, dt_pfargd_t *pfd, dt_node_t *dnp)
168 {
169 ctf_file_t *ctfp = dnp->dn_ctfp;
170 ctf_id_t type = ctf_type_resolve(ctfp, dnp->dn_type);
171 char n[DT_TYPE_NAMELEN];
172
173 return (ctf_type_name(ctfp, type, n, sizeof (n)) != NULL && (
174 strcmp(n, "short") == 0 || strcmp(n, "signed short") == 0 ||
175 strcmp(n, "unsigned short") == 0));
176 }
177
178 /*ARGSUSED*/
179 static int
180 pfcheck_xlong(dt_pfargv_t *pfv, dt_pfargd_t *pfd, dt_node_t *dnp)
181 {
182 ctf_file_t *ctfp = dnp->dn_ctfp;
183 ctf_id_t type = ctf_type_resolve(ctfp, dnp->dn_type);
184 char n[DT_TYPE_NAMELEN];
185
186 return (ctf_type_name(ctfp, type, n, sizeof (n)) != NULL && (
187 strcmp(n, "long") == 0 || strcmp(n, "signed long") == 0 ||
188 strcmp(n, "unsigned long") == 0));
189 }
190
191 /*ARGSUSED*/
192 static int
193 pfcheck_xlonglong(dt_pfargv_t *pfv, dt_pfargd_t *pfd, dt_node_t *dnp)
194 {
195 ctf_file_t *ctfp = dnp->dn_ctfp;
196 ctf_id_t type = dnp->dn_type;
197 char n[DT_TYPE_NAMELEN];
198
199 if (ctf_type_name(ctfp, ctf_type_resolve(ctfp, type), n,
200 sizeof (n)) != NULL && (strcmp(n, "long long") == 0 ||
201 strcmp(n, "signed long long") == 0 ||
202 strcmp(n, "unsigned long long") == 0))
203 return (1);
204
205 /*
206 * If the type used for %llx or %llX is not an [unsigned] long long, we
207 * also permit it to be a [u]int64_t or any typedef thereof. We know
208 * that these typedefs are guaranteed to work with %ll[xX] in either
209 * compilation environment even though they alias to "long" in LP64.
210 */
211 while (ctf_type_kind(ctfp, type) == CTF_K_TYPEDEF) {
212 if (ctf_type_name(ctfp, type, n, sizeof (n)) != NULL &&
213 (strcmp(n, "int64_t") == 0 || strcmp(n, "uint64_t") == 0))
214 return (1);
215
216 type = ctf_type_reference(ctfp, type);
217 }
218
219 return (0);
220 }
221
222 /*ARGSUSED*/
223 static int
224 pfcheck_type(dt_pfargv_t *pfv, dt_pfargd_t *pfd, dt_node_t *dnp)
225 {
226 return (ctf_type_compat(dnp->dn_ctfp, ctf_type_resolve(dnp->dn_ctfp,
227 dnp->dn_type), pfd->pfd_conv->pfc_dctfp, pfd->pfd_conv->pfc_dtype));
228 }
229
230 /*ARGSUSED*/
231 static int
232 pfprint_sint(dtrace_hdl_t *dtp, FILE *fp, const char *format,
233 const dt_pfargd_t *pfd, const void *addr, size_t size, uint64_t unormal)
234 {
235 int64_t normal = (int64_t)unormal;
236 int32_t n = (int32_t)normal;
237
238 switch (size) {
239 case sizeof (int8_t):
240 return (dt_printf(dtp, fp, format,
241 (int32_t)*((int8_t *)addr) / n));
242 case sizeof (int16_t):
243 return (dt_printf(dtp, fp, format,
244 (int32_t)*((int16_t *)addr) / n));
245 case sizeof (int32_t):
246 return (dt_printf(dtp, fp, format,
247 *((int32_t *)addr) / n));
248 case sizeof (int64_t):
249 return (dt_printf(dtp, fp, format,
250 *((int64_t *)addr) / normal));
251 default:
252 return (dt_set_errno(dtp, EDT_DMISMATCH));
253 }
254 }
255
256 /*ARGSUSED*/
257 static int
258 pfprint_uint(dtrace_hdl_t *dtp, FILE *fp, const char *format,
259 const dt_pfargd_t *pfd, const void *addr, size_t size, uint64_t normal)
260 {
261 uint32_t n = (uint32_t)normal;
262
263 switch (size) {
264 case sizeof (uint8_t):
265 return (dt_printf(dtp, fp, format,
266 (uint32_t)*((uint8_t *)addr) / n));
267 case sizeof (uint16_t):
268 return (dt_printf(dtp, fp, format,
269 (uint32_t)*((uint16_t *)addr) / n));
270 case sizeof (uint32_t):
271 return (dt_printf(dtp, fp, format,
272 *((uint32_t *)addr) / n));
273 case sizeof (uint64_t):
274 return (dt_printf(dtp, fp, format,
275 *((uint64_t *)addr) / normal));
276 default:
277 return (dt_set_errno(dtp, EDT_DMISMATCH));
278 }
279 }
280
281 static int
282 pfprint_dint(dtrace_hdl_t *dtp, FILE *fp, const char *format,
283 const dt_pfargd_t *pfd, const void *addr, size_t size, uint64_t normal)
284 {
285 if (pfd->pfd_flags & DT_PFCONV_SIGNED)
286 return (pfprint_sint(dtp, fp, format, pfd, addr, size, normal));
287 else
288 return (pfprint_uint(dtp, fp, format, pfd, addr, size, normal));
289 }
290
291 /*ARGSUSED*/
292 static int
293 pfprint_fp(dtrace_hdl_t *dtp, FILE *fp, const char *format,
294 const dt_pfargd_t *pfd, const void *addr, size_t size, uint64_t normal)
295 {
296 double n = (double)normal;
297 long double ldn = (long double)normal;
298
299 switch (size) {
300 case sizeof (float):
301 return (dt_printf(dtp, fp, format,
302 (double)*((float *)addr) / n));
303 case sizeof (double):
304 return (dt_printf(dtp, fp, format,
305 *((double *)addr) / n));
306 case sizeof (long double):
307 return (dt_printf(dtp, fp, format,
308 *((long double *)addr) / ldn));
309 default:
310 return (dt_set_errno(dtp, EDT_DMISMATCH));
311 }
312 }
313
314 /*ARGSUSED*/
315 static int
316 pfprint_addr(dtrace_hdl_t *dtp, FILE *fp, const char *format,
317 const dt_pfargd_t *pfd, const void *addr, size_t size, uint64_t normal)
318 {
319 char *s;
320 int n, len = 256;
321 uint64_t val;
322
323 switch (size) {
324 case sizeof (uint32_t):
325 val = *((uint32_t *)addr);
326 break;
327 case sizeof (uint64_t):
328 val = *((uint64_t *)addr);
329 break;
330 default:
331 return (dt_set_errno(dtp, EDT_DMISMATCH));
332 }
333
334 do {
335 n = len;
336 s = alloca(n);
337 } while ((len = dtrace_addr2str(dtp, val, s, n)) > n);
338
339 return (dt_printf(dtp, fp, format, s));
340 }
341
342 /*ARGSUSED*/
343 static int
344 pfprint_mod(dtrace_hdl_t *dtp, FILE *fp, const char *format,
345 const dt_pfargd_t *pfd, const void *addr, size_t size, uint64_t normal)
346 {
347 return (dt_print_mod(dtp, fp, format, (caddr_t)addr));
348 }
349
350 /*ARGSUSED*/
351 static int
352 pfprint_umod(dtrace_hdl_t *dtp, FILE *fp, const char *format,
353 const dt_pfargd_t *pfd, const void *addr, size_t size, uint64_t normal)
354 {
355 return (dt_print_umod(dtp, fp, format, (caddr_t)addr));
356 }
357
358 /*ARGSUSED*/
359 static int
360 pfprint_uaddr(dtrace_hdl_t *dtp, FILE *fp, const char *format,
361 const dt_pfargd_t *pfd, const void *addr, size_t size, uint64_t normal)
362 {
363 char *s;
364 int n, len = 256;
365 uint64_t val, pid = 0;
366
367 dt_ident_t *idp = dt_idhash_lookup(dtp->dt_macros, "target");
368
369 switch (size) {
370 case sizeof (uint32_t):
371 val = (u_longlong_t)*((uint32_t *)addr);
372 break;
373 case sizeof (uint64_t):
374 val = (u_longlong_t)*((uint64_t *)addr);
375 break;
376 case sizeof (uint64_t) * 2:
377 pid = ((uint64_t *)(uintptr_t)addr)[0];
378 val = ((uint64_t *)(uintptr_t)addr)[1];
379 break;
380 default:
381 return (dt_set_errno(dtp, EDT_DMISMATCH));
382 }
383
384 if (pid == 0 && dtp->dt_vector == NULL && idp != NULL)
385 pid = idp->di_id;
386
387 do {
388 n = len;
389 s = alloca(n);
390 } while ((len = dtrace_uaddr2str(dtp, pid, val, s, n)) > n);
391
392 return (dt_printf(dtp, fp, format, s));
393 }
394
395 /*ARGSUSED*/
396 static int
397 pfprint_stack(dtrace_hdl_t *dtp, FILE *fp, const char *format,
398 const dt_pfargd_t *pfd, const void *vaddr, size_t size, uint64_t normal)
399 {
400 int width;
401 dtrace_optval_t saved = dtp->dt_options[DTRACEOPT_STACKINDENT];
402 const dtrace_recdesc_t *rec = pfd->pfd_rec;
403 caddr_t addr = (caddr_t)vaddr;
404 int err = 0;
405
406 /*
407 * We have stashed the value of the STACKINDENT option, and we will
408 * now override it for the purposes of formatting the stack. If the
409 * field has been specified as left-aligned (i.e. (%-#), we set the
410 * indentation to be the width. This is a slightly odd semantic, but
411 * it's useful functionality -- and it's slightly odd to begin with to
412 * be using a single format specifier to be formatting multiple lines
413 * of text...
414 */
415 if (pfd->pfd_dynwidth < 0) {
416 assert(pfd->pfd_flags & DT_PFCONV_DYNWIDTH);
417 width = -pfd->pfd_dynwidth;
418 } else if (pfd->pfd_flags & DT_PFCONV_LEFT) {
419 width = pfd->pfd_dynwidth ? pfd->pfd_dynwidth : pfd->pfd_width;
420 } else {
421 width = 0;
422 }
423
424 dtp->dt_options[DTRACEOPT_STACKINDENT] = width;
425
426 switch (rec->dtrd_action) {
427 case DTRACEACT_USTACK:
428 case DTRACEACT_JSTACK:
429 err = dt_print_ustack(dtp, fp, format, addr, rec->dtrd_arg);
430 break;
431
432 case DTRACEACT_STACK:
433 err = dt_print_stack(dtp, fp, format, addr, rec->dtrd_arg,
434 rec->dtrd_size / rec->dtrd_arg);
435 break;
436
437 default:
438 assert(0);
439 }
440
441 dtp->dt_options[DTRACEOPT_STACKINDENT] = saved;
442
443 return (err);
444 }
445
446 /*ARGSUSED*/
447 static int
448 pfprint_time(dtrace_hdl_t *dtp, FILE *fp, const char *format,
449 const dt_pfargd_t *pfd, const void *addr, size_t size, uint64_t normal)
450 {
451 char src[32], buf[32], *dst = buf;
452 hrtime_t time = *((uint64_t *)addr);
453 time_t sec = (time_t)(time / NANOSEC);
454 int i;
455
456 /*
457 * ctime(3C) returns a string of the form "Dec 3 17:20:00 1973\n\0".
458 * Below, we turn this into the canonical adb/mdb /[yY] format,
459 * "1973 Dec 3 17:20:00".
460 */
461 (void) ctime_r(&sec, src, sizeof (src));
462
463 /*
464 * Place the 4-digit year at the head of the string...
465 */
466 for (i = 20; i < 24; i++)
467 *dst++ = src[i];
468
469 /*
470 * ...and follow it with the remainder (month, day, hh:mm:ss).
471 */
472 for (i = 3; i < 19; i++)
473 *dst++ = src[i];
474
475 *dst = '\0';
476 return (dt_printf(dtp, fp, format, buf));
477 }
478
479 /*
480 * This prints the time in RFC 822 standard form. This is useful for emitting
481 * notions of time that are consumed by standard tools (e.g., as part of an
482 * RSS feed).
483 */
484 /*ARGSUSED*/
485 static int
486 pfprint_time822(dtrace_hdl_t *dtp, FILE *fp, const char *format,
487 const dt_pfargd_t *pfd, const void *addr, size_t size, uint64_t normal)
488 {
489 hrtime_t time = *((uint64_t *)addr);
490 time_t sec = (time_t)(time / NANOSEC);
491 struct tm tm;
492 char buf[64];
493
494 (void) localtime_r(&sec, &tm);
495 (void) strftime(buf, sizeof (buf), "%a, %d %b %G %T %Z", &tm);
496 return (dt_printf(dtp, fp, format, buf));
497 }
498
499 /*ARGSUSED*/
500 static int
501 pfprint_port(dtrace_hdl_t *dtp, FILE *fp, const char *format,
502 const dt_pfargd_t *pfd, const void *addr, size_t size, uint64_t normal)
503 {
504 uint16_t port = htons(*((uint16_t *)addr));
505 char buf[256];
506 struct servent *sv, res;
507
508 if ((sv = getservbyport_r(port, NULL, &res, buf, sizeof (buf))) != NULL)
509 return (dt_printf(dtp, fp, format, sv->s_name));
510
511 (void) snprintf(buf, sizeof (buf), "%d", *((uint16_t *)addr));
512 return (dt_printf(dtp, fp, format, buf));
513 }
514
515 /*ARGSUSED*/
516 static int
517 pfprint_inetaddr(dtrace_hdl_t *dtp, FILE *fp, const char *format,
518 const dt_pfargd_t *pfd, const void *addr, size_t size, uint64_t normal)
519 {
520 char *s = alloca(size + 1);
521 struct hostent *host, res;
522 char inetaddr[NS_IN6ADDRSZ];
523 char buf[1024];
524 int e;
525
526 bcopy(addr, s, size);
527 s[size] = '\0';
528
529 if (strchr(s, ':') == NULL && inet_pton(AF_INET, s, inetaddr) != -1) {
530 if ((host = gethostbyaddr_r(inetaddr, NS_INADDRSZ,
531 AF_INET, &res, buf, sizeof (buf), &e)) != NULL)
532 return (dt_printf(dtp, fp, format, host->h_name));
533 } else if (inet_pton(AF_INET6, s, inetaddr) != -1) {
534 if ((host = getipnodebyaddr(inetaddr, NS_IN6ADDRSZ,
535 AF_INET6, &e)) != NULL)
536 return (dt_printf(dtp, fp, format, host->h_name));
537 }
538
539 return (dt_printf(dtp, fp, format, s));
540 }
541
542 /*ARGSUSED*/
543 static int
544 pfprint_cstr(dtrace_hdl_t *dtp, FILE *fp, const char *format,
545 const dt_pfargd_t *pfd, const void *addr, size_t size, uint64_t normal)
546 {
547 char *s = alloca(size + 1);
548
549 bcopy(addr, s, size);
550 s[size] = '\0';
551 return (dt_printf(dtp, fp, format, s));
552 }
553
554 /*ARGSUSED*/
555 static int
556 pfprint_wstr(dtrace_hdl_t *dtp, FILE *fp, const char *format,
557 const dt_pfargd_t *pfd, const void *addr, size_t size, uint64_t normal)
558 {
559 wchar_t *ws = alloca(size + sizeof (wchar_t));
560
561 bcopy(addr, ws, size);
562 ws[size / sizeof (wchar_t)] = L'\0';
563 return (dt_printf(dtp, fp, format, ws));
564 }
565
566 /*ARGSUSED*/
567 static int
568 pfprint_estr(dtrace_hdl_t *dtp, FILE *fp, const char *format,
569 const dt_pfargd_t *pfd, const void *addr, size_t size, uint64_t normal)
570 {
571 char *s;
572 int n;
573
574 if ((s = strchr2esc(addr, size)) == NULL)
575 return (dt_set_errno(dtp, EDT_NOMEM));
576
577 n = dt_printf(dtp, fp, format, s);
578 free(s);
579 return (n);
580 }
581
582 static int
583 pfprint_echr(dtrace_hdl_t *dtp, FILE *fp, const char *format,
584 const dt_pfargd_t *pfd, const void *addr, size_t size, uint64_t normal)
585 {
586 char c;
587
588 switch (size) {
589 case sizeof (int8_t):
590 c = *(int8_t *)addr;
591 break;
592 case sizeof (int16_t):
593 c = *(int16_t *)addr;
594 break;
595 case sizeof (int32_t):
596 c = *(int32_t *)addr;
597 break;
598 default:
599 return (dt_set_errno(dtp, EDT_DMISMATCH));
600 }
601
602 return (pfprint_estr(dtp, fp, format, pfd, &c, 1, normal));
603 }
604
605 /*ARGSUSED*/
606 static int
607 pfprint_pct(dtrace_hdl_t *dtp, FILE *fp, const char *format,
608 const dt_pfargd_t *pfd, const void *addr, size_t size, uint64_t normal)
609 {
610 return (dt_printf(dtp, fp, "%%"));
611 }
612
613 static const char pfproto_xint[] = "char, short, int, long, or long long";
614 static const char pfproto_csi[] = "char, short, or int";
615 static const char pfproto_fp[] = "float, double, or long double";
616 static const char pfproto_addr[] = "pointer or integer";
617 static const char pfproto_uaddr[] =
618 "pointer or integer (with -p/-c) or _usymaddr (without -p/-c)";
619 static const char pfproto_cstr[] = "char [] or string (or use stringof)";
620 static const char pfproto_wstr[] = "wchar_t []";
621
622 /*
623 * Printf format conversion dictionary. This table should match the set of
624 * conversions offered by printf(3C), as well as some additional extensions.
625 * The second parameter is an ASCII string which is either an actual type
626 * name we should look up (if pfcheck_type is specified), or just a descriptive
627 * string of the types expected for use in error messages.
628 */
629 static const dt_pfconv_t _dtrace_conversions[] = {
630 { "a", "s", pfproto_addr, pfcheck_kaddr, pfprint_addr },
631 { "A", "s", pfproto_uaddr, pfcheck_uaddr, pfprint_uaddr },
632 { "c", "c", pfproto_csi, pfcheck_csi, pfprint_sint },
633 { "C", "s", pfproto_csi, pfcheck_csi, pfprint_echr },
634 { "d", "d", pfproto_xint, pfcheck_dint, pfprint_dint },
635 { "e", "e", pfproto_fp, pfcheck_fp, pfprint_fp },
636 { "E", "E", pfproto_fp, pfcheck_fp, pfprint_fp },
637 { "f", "f", pfproto_fp, pfcheck_fp, pfprint_fp },
638 { "g", "g", pfproto_fp, pfcheck_fp, pfprint_fp },
639 { "G", "G", pfproto_fp, pfcheck_fp, pfprint_fp },
640 { "hd", "d", "short", pfcheck_type, pfprint_sint },
641 { "hi", "i", "short", pfcheck_type, pfprint_sint },
642 { "ho", "o", "unsigned short", pfcheck_type, pfprint_uint },
643 { "hu", "u", "unsigned short", pfcheck_type, pfprint_uint },
644 { "hx", "x", "short", pfcheck_xshort, pfprint_uint },
645 { "hX", "X", "short", pfcheck_xshort, pfprint_uint },
646 { "i", "i", pfproto_xint, pfcheck_xint, pfprint_sint },
647 { "I", "s", pfproto_cstr, pfcheck_str, pfprint_inetaddr },
648 { "k", "s", "stack", pfcheck_stack, pfprint_stack },
649 { "lc", "lc", "int", pfcheck_type, pfprint_sint }, /* a.k.a. wint_t */
650 { "ld", "d", "long", pfcheck_type, pfprint_sint },
651 { "li", "i", "long", pfcheck_type, pfprint_sint },
652 { "lo", "o", "unsigned long", pfcheck_type, pfprint_uint },
653 { "lu", "u", "unsigned long", pfcheck_type, pfprint_uint },
654 { "ls", "ls", pfproto_wstr, pfcheck_wstr, pfprint_wstr },
655 { "lx", "x", "long", pfcheck_xlong, pfprint_uint },
656 { "lX", "X", "long", pfcheck_xlong, pfprint_uint },
657 { "lld", "d", "long long", pfcheck_type, pfprint_sint },
658 { "lli", "i", "long long", pfcheck_type, pfprint_sint },
659 { "llo", "o", "unsigned long long", pfcheck_type, pfprint_uint },
660 { "llu", "u", "unsigned long long", pfcheck_type, pfprint_uint },
661 { "llx", "x", "long long", pfcheck_xlonglong, pfprint_uint },
662 { "llX", "X", "long long", pfcheck_xlonglong, pfprint_uint },
663 { "Le", "e", "long double", pfcheck_type, pfprint_fp },
664 { "LE", "E", "long double", pfcheck_type, pfprint_fp },
665 { "Lf", "f", "long double", pfcheck_type, pfprint_fp },
666 { "Lg", "g", "long double", pfcheck_type, pfprint_fp },
667 { "LG", "G", "long double", pfcheck_type, pfprint_fp },
668 { "o", "o", pfproto_xint, pfcheck_xint, pfprint_uint },
669 { "p", "x", pfproto_addr, pfcheck_addr, pfprint_uint },
670 { "P", "s", "uint16_t", pfcheck_type, pfprint_port },
671 { "s", "s", "char [] or string (or use stringof)", pfcheck_str, pfprint_cstr },
672 { "S", "s", pfproto_cstr, pfcheck_str, pfprint_estr },
673 { "T", "s", "int64_t", pfcheck_time, pfprint_time822 },
674 { "u", "u", pfproto_xint, pfcheck_xint, pfprint_uint },
675 { "wc", "wc", "int", pfcheck_type, pfprint_sint }, /* a.k.a. wchar_t */
676 { "ws", "ws", pfproto_wstr, pfcheck_wstr, pfprint_wstr },
677 { "x", "x", pfproto_xint, pfcheck_xint, pfprint_uint },
678 { "X", "X", pfproto_xint, pfcheck_xint, pfprint_uint },
679 { "Y", "s", "int64_t", pfcheck_time, pfprint_time },
680 { "%", "%", "void", pfcheck_type, pfprint_pct },
681 { NULL, NULL, NULL, NULL, NULL }
682 };
683
684 int
685 dt_pfdict_create(dtrace_hdl_t *dtp)
686 {
687 uint_t n = _dtrace_strbuckets;
688 const dt_pfconv_t *pfd;
689 dt_pfdict_t *pdi;
690
691 if ((pdi = malloc(sizeof (dt_pfdict_t))) == NULL ||
692 (pdi->pdi_buckets = malloc(sizeof (dt_pfconv_t *) * n)) == NULL) {
693 free(pdi);
694 return (dt_set_errno(dtp, EDT_NOMEM));
695 }
696
697 dtp->dt_pfdict = pdi;
698 bzero(pdi->pdi_buckets, sizeof (dt_pfconv_t *) * n);
699 pdi->pdi_nbuckets = n;
700
701 for (pfd = _dtrace_conversions; pfd->pfc_name != NULL; pfd++) {
702 dtrace_typeinfo_t dtt;
703 dt_pfconv_t *pfc;
704 uint_t h;
705
706 if ((pfc = malloc(sizeof (dt_pfconv_t))) == NULL) {
707 dt_pfdict_destroy(dtp);
708 return (dt_set_errno(dtp, EDT_NOMEM));
709 }
710
711 bcopy(pfd, pfc, sizeof (dt_pfconv_t));
712 h = dt_strtab_hash(pfc->pfc_name, NULL) % n;
713 pfc->pfc_next = pdi->pdi_buckets[h];
714 pdi->pdi_buckets[h] = pfc;
715
716 dtt.dtt_ctfp = NULL;
717 dtt.dtt_type = CTF_ERR;
718
719 /*
720 * The "D" container or its parent must contain a definition of
721 * any type referenced by a printf conversion. If none can be
722 * found, we fail to initialize the printf dictionary.
723 */
724 if (pfc->pfc_check == &pfcheck_type && dtrace_lookup_by_type(
725 dtp, DTRACE_OBJ_DDEFS, pfc->pfc_tstr, &dtt) != 0) {
726 dt_pfdict_destroy(dtp);
727 return (dt_set_errno(dtp, EDT_NOCONV));
728 }
729
730 pfc->pfc_dctfp = dtt.dtt_ctfp;
731 pfc->pfc_dtype = dtt.dtt_type;
732
733 /*
734 * The "C" container may contain an alternate definition of an
735 * explicit conversion type. If it does, use it; otherwise
736 * just set pfc_ctype to pfc_dtype so it is always valid.
737 */
738 if (pfc->pfc_check == &pfcheck_type && dtrace_lookup_by_type(
739 dtp, DTRACE_OBJ_CDEFS, pfc->pfc_tstr, &dtt) == 0) {
740 pfc->pfc_cctfp = dtt.dtt_ctfp;
741 pfc->pfc_ctype = dtt.dtt_type;
742 } else {
743 pfc->pfc_cctfp = pfc->pfc_dctfp;
744 pfc->pfc_ctype = pfc->pfc_dtype;
745 }
746
747 if (pfc->pfc_check == NULL || pfc->pfc_print == NULL ||
748 pfc->pfc_ofmt == NULL || pfc->pfc_tstr == NULL) {
749 dt_pfdict_destroy(dtp);
750 return (dt_set_errno(dtp, EDT_BADCONV));
751 }
752
753 dt_dprintf("loaded printf conversion %%%s\n", pfc->pfc_name);
754 }
755
756 return (0);
757 }
758
759 void
760 dt_pfdict_destroy(dtrace_hdl_t *dtp)
761 {
762 dt_pfdict_t *pdi = dtp->dt_pfdict;
763 dt_pfconv_t *pfc, *nfc;
764 uint_t i;
765
766 if (pdi == NULL)
767 return;
768
769 for (i = 0; i < pdi->pdi_nbuckets; i++) {
770 for (pfc = pdi->pdi_buckets[i]; pfc != NULL; pfc = nfc) {
771 nfc = pfc->pfc_next;
772 free(pfc);
773 }
774 }
775
776 free(pdi->pdi_buckets);
777 free(pdi);
778 dtp->dt_pfdict = NULL;
779 }
780
781 static const dt_pfconv_t *
782 dt_pfdict_lookup(dtrace_hdl_t *dtp, const char *name)
783 {
784 dt_pfdict_t *pdi = dtp->dt_pfdict;
785 uint_t h = dt_strtab_hash(name, NULL) % pdi->pdi_nbuckets;
786 const dt_pfconv_t *pfc;
787
788 for (pfc = pdi->pdi_buckets[h]; pfc != NULL; pfc = pfc->pfc_next) {
789 if (strcmp(pfc->pfc_name, name) == 0)
790 break;
791 }
792
793 return (pfc);
794 }
795
796 static dt_pfargv_t *
797 dt_printf_error(dtrace_hdl_t *dtp, int err)
798 {
799 if (yypcb != NULL)
800 longjmp(yypcb->pcb_jmpbuf, err);
801
802 (void) dt_set_errno(dtp, err);
803 return (NULL);
804 }
805
806 dt_pfargv_t *
807 dt_printf_create(dtrace_hdl_t *dtp, const char *s)
808 {
809 dt_pfargd_t *pfd, *nfd = NULL;
810 dt_pfargv_t *pfv;
811 const char *p, *q;
812 char *format;
813
814 if ((pfv = malloc(sizeof (dt_pfargv_t))) == NULL ||
815 (format = strdup(s)) == NULL) {
816 free(pfv);
817 return (dt_printf_error(dtp, EDT_NOMEM));
818 }
819
820 pfv->pfv_format = format;
821 pfv->pfv_argv = NULL;
822 pfv->pfv_argc = 0;
823 pfv->pfv_flags = 0;
824 pfv->pfv_dtp = dtp;
825
826 for (q = format; (p = strchr(q, '%')) != NULL; q = *p ? p + 1 : p) {
827 uint_t namelen = 0;
828 int digits = 0;
829 int dot = 0;
830
831 char name[8];
832 char c;
833 int n;
834
835 if ((pfd = malloc(sizeof (dt_pfargd_t))) == NULL) {
836 dt_printf_destroy(pfv);
837 return (dt_printf_error(dtp, EDT_NOMEM));
838 }
839
840 if (pfv->pfv_argv != NULL)
841 nfd->pfd_next = pfd;
842 else
843 pfv->pfv_argv = pfd;
844
845 bzero(pfd, sizeof (dt_pfargd_t));
846 pfv->pfv_argc++;
847 nfd = pfd;
848
849 if (p > q) {
850 pfd->pfd_preflen = (size_t)(p - q);
851 pfd->pfd_prefix = q;
852 }
853
854 fmt_switch:
855 switch (c = *++p) {
856 case '0': case '1': case '2': case '3': case '4':
857 case '5': case '6': case '7': case '8': case '9':
858 if (dot == 0 && digits == 0 && c == '0') {
859 pfd->pfd_flags |= DT_PFCONV_ZPAD;
860 pfd->pfd_flags &= ~DT_PFCONV_LEFT;
861 goto fmt_switch;
862 }
863
864 for (n = 0; isdigit(c); c = *++p)
865 n = n * 10 + c - '0';
866
867 if (dot)
868 pfd->pfd_prec = n;
869 else
870 pfd->pfd_width = n;
871
872 p--;
873 digits++;
874 goto fmt_switch;
875
876 case '#':
877 pfd->pfd_flags |= DT_PFCONV_ALT;
878 goto fmt_switch;
879
880 case '*':
881 n = dot ? DT_PFCONV_DYNPREC : DT_PFCONV_DYNWIDTH;
882
883 if (pfd->pfd_flags & n) {
884 yywarn("format conversion #%u has more than "
885 "one '*' specified for the output %s\n",
886 pfv->pfv_argc, n ? "precision" : "width");
887
888 dt_printf_destroy(pfv);
889 return (dt_printf_error(dtp, EDT_COMPILER));
890 }
891
892 pfd->pfd_flags |= n;
893 goto fmt_switch;
894
895 case '+':
896 pfd->pfd_flags |= DT_PFCONV_SPOS;
897 goto fmt_switch;
898
899 case '-':
900 pfd->pfd_flags |= DT_PFCONV_LEFT;
901 pfd->pfd_flags &= ~DT_PFCONV_ZPAD;
902 goto fmt_switch;
903
904 case '.':
905 if (dot++ != 0) {
906 yywarn("format conversion #%u has more than "
907 "one '.' specified\n", pfv->pfv_argc);
908
909 dt_printf_destroy(pfv);
910 return (dt_printf_error(dtp, EDT_COMPILER));
911 }
912 digits = 0;
913 goto fmt_switch;
914
915 case '?':
916 if (dtp->dt_conf.dtc_ctfmodel == CTF_MODEL_LP64)
917 pfd->pfd_width = 16;
918 else
919 pfd->pfd_width = 8;
920 goto fmt_switch;
921
922 case '@':
923 pfd->pfd_flags |= DT_PFCONV_AGG;
924 goto fmt_switch;
925
926 case '\'':
927 pfd->pfd_flags |= DT_PFCONV_GROUP;
928 goto fmt_switch;
929
930 case ' ':
931 pfd->pfd_flags |= DT_PFCONV_SPACE;
932 goto fmt_switch;
933
934 case '$':
935 yywarn("format conversion #%u uses unsupported "
936 "positional format (%%n$)\n", pfv->pfv_argc);
937
938 dt_printf_destroy(pfv);
939 return (dt_printf_error(dtp, EDT_COMPILER));
940
941 case '%':
942 if (p[-1] == '%')
943 goto default_lbl; /* if %% then use "%" conv */
944
945 yywarn("format conversion #%u cannot be combined "
946 "with other format flags: %%%%\n", pfv->pfv_argc);
947
948 dt_printf_destroy(pfv);
949 return (dt_printf_error(dtp, EDT_COMPILER));
950
951 case '\0':
952 yywarn("format conversion #%u name expected before "
953 "end of format string\n", pfv->pfv_argc);
954
955 dt_printf_destroy(pfv);
956 return (dt_printf_error(dtp, EDT_COMPILER));
957
958 case 'h':
959 case 'l':
960 case 'L':
961 case 'w':
962 if (namelen < sizeof (name) - 2)
963 name[namelen++] = c;
964 goto fmt_switch;
965
966 default_lbl:
967 default:
968 name[namelen++] = c;
969 name[namelen] = '\0';
970 }
971
972 pfd->pfd_conv = dt_pfdict_lookup(dtp, name);
973
974 if (pfd->pfd_conv == NULL) {
975 yywarn("format conversion #%u is undefined: %%%s\n",
976 pfv->pfv_argc, name);
977 dt_printf_destroy(pfv);
978 return (dt_printf_error(dtp, EDT_COMPILER));
979 }
980 }
981
982 if (*q != '\0' || *format == '\0') {
983 if ((pfd = malloc(sizeof (dt_pfargd_t))) == NULL) {
984 dt_printf_destroy(pfv);
985 return (dt_printf_error(dtp, EDT_NOMEM));
986 }
987
988 if (pfv->pfv_argv != NULL)
989 nfd->pfd_next = pfd;
990 else
991 pfv->pfv_argv = pfd;
992
993 bzero(pfd, sizeof (dt_pfargd_t));
994 pfv->pfv_argc++;
995
996 pfd->pfd_prefix = q;
997 pfd->pfd_preflen = strlen(q);
998 }
999
1000 return (pfv);
1001 }
1002
1003 void
1004 dt_printf_destroy(dt_pfargv_t *pfv)
1005 {
1006 dt_pfargd_t *pfd, *nfd;
1007
1008 for (pfd = pfv->pfv_argv; pfd != NULL; pfd = nfd) {
1009 nfd = pfd->pfd_next;
1010 free(pfd);
1011 }
1012
1013 free(pfv->pfv_format);
1014 free(pfv);
1015 }
1016
1017 void
1018 dt_printf_validate(dt_pfargv_t *pfv, uint_t flags,
1019 dt_ident_t *idp, int foff, dtrace_actkind_t kind, dt_node_t *dnp)
1020 {
1021 dt_pfargd_t *pfd = pfv->pfv_argv;
1022 const char *func = idp->di_name;
1023
1024 char n[DT_TYPE_NAMELEN];
1025 dtrace_typeinfo_t dtt;
1026 const char *aggtype;
1027 dt_node_t aggnode;
1028 int i, j;
1029
1030 if (pfv->pfv_format[0] == '\0') {
1031 xyerror(D_PRINTF_FMT_EMPTY,
1032 "%s( ) format string is empty\n", func);
1033 }
1034
1035 pfv->pfv_flags = flags;
1036
1037 /*
1038 * We fake up a parse node representing the type that can be used with
1039 * an aggregation result conversion, which -- for all but count() --
1040 * is a signed quantity.
1041 */
1042 if (kind != DTRACEAGG_COUNT)
1043 aggtype = "int64_t";
1044 else
1045 aggtype = "uint64_t";
1046
1047 if (dt_type_lookup(aggtype, &dtt) != 0)
1048 xyerror(D_TYPE_ERR, "failed to lookup agg type %s\n", aggtype);
1049
1050 bzero(&aggnode, sizeof (aggnode));
1051 dt_node_type_assign(&aggnode, dtt.dtt_ctfp, dtt.dtt_type, B_FALSE);
1052
1053 for (i = 0, j = 0; i < pfv->pfv_argc; i++, pfd = pfd->pfd_next) {
1054 const dt_pfconv_t *pfc = pfd->pfd_conv;
1055 const char *dyns[2];
1056 int dync = 0;
1057
1058 char vname[64];
1059 dt_node_t *vnp;
1060
1061 if (pfc == NULL)
1062 continue; /* no checking if argd is just a prefix */
1063
1064 if (pfc->pfc_print == &pfprint_pct) {
1065 (void) strcat(pfd->pfd_fmt, pfc->pfc_ofmt);
1066 continue;
1067 }
1068
1069 if (pfd->pfd_flags & DT_PFCONV_DYNPREC)
1070 dyns[dync++] = ".*";
1071 if (pfd->pfd_flags & DT_PFCONV_DYNWIDTH)
1072 dyns[dync++] = "*";
1073
1074 for (; dync != 0; dync--) {
1075 if (dnp == NULL) {
1076 xyerror(D_PRINTF_DYN_PROTO,
1077 "%s( ) prototype mismatch: conversion "
1078 "#%d (%%%s) is missing a corresponding "
1079 "\"%s\" argument\n", func, i + 1,
1080 pfc->pfc_name, dyns[dync - 1]);
1081 }
1082
1083 if (dt_node_is_integer(dnp) == 0) {
1084 xyerror(D_PRINTF_DYN_TYPE,
1085 "%s( ) argument #%d is incompatible "
1086 "with conversion #%d prototype:\n"
1087 "\tconversion: %% %s %s\n"
1088 "\t prototype: int\n\t argument: %s\n",
1089 func, j + foff + 1, i + 1,
1090 dyns[dync - 1], pfc->pfc_name,
1091 dt_node_type_name(dnp, n, sizeof (n)));
1092 }
1093
1094 dnp = dnp->dn_list;
1095 j++;
1096 }
1097
1098 /*
1099 * If this conversion is consuming the aggregation data, set
1100 * the value node pointer (vnp) to a fake node based on the
1101 * aggregating function result type. Otherwise assign vnp to
1102 * the next parse node in the argument list, if there is one.
1103 */
1104 if (pfd->pfd_flags & DT_PFCONV_AGG) {
1105 if (!(flags & DT_PRINTF_AGGREGATION)) {
1106 xyerror(D_PRINTF_AGG_CONV,
1107 "%%@ conversion requires an aggregation"
1108 " and is not for use with %s( )\n", func);
1109 }
1110 (void) strlcpy(vname, "aggregating action",
1111 sizeof (vname));
1112 vnp = &aggnode;
1113 } else if (dnp == NULL) {
1114 xyerror(D_PRINTF_ARG_PROTO,
1115 "%s( ) prototype mismatch: conversion #%d (%%"
1116 "%s) is missing a corresponding value argument\n",
1117 func, i + 1, pfc->pfc_name);
1118 } else {
1119 (void) snprintf(vname, sizeof (vname),
1120 "argument #%d", j + foff + 1);
1121 vnp = dnp;
1122 dnp = dnp->dn_list;
1123 j++;
1124 }
1125
1126 /*
1127 * Fill in the proposed final format string by prepending any
1128 * size-related prefixes to the pfconv's format string. The
1129 * pfc_check() function below may optionally modify the format
1130 * as part of validating the type of the input argument.
1131 */
1132 if (pfc->pfc_print == &pfprint_sint ||
1133 pfc->pfc_print == &pfprint_uint ||
1134 pfc->pfc_print == &pfprint_dint) {
1135 if (dt_node_type_size(vnp) == sizeof (uint64_t))
1136 (void) strcpy(pfd->pfd_fmt, "ll");
1137 } else if (pfc->pfc_print == &pfprint_fp) {
1138 if (dt_node_type_size(vnp) == sizeof (long double))
1139 (void) strcpy(pfd->pfd_fmt, "L");
1140 }
1141
1142 (void) strcat(pfd->pfd_fmt, pfc->pfc_ofmt);
1143
1144 /*
1145 * Validate the format conversion against the value node type.
1146 * If the conversion is good, create the descriptor format
1147 * string by concatenating together any required printf(3C)
1148 * size prefixes with the conversion's native format string.
1149 */
1150 if (pfc->pfc_check(pfv, pfd, vnp) == 0) {
1151 xyerror(D_PRINTF_ARG_TYPE,
1152 "%s( ) %s is incompatible with "
1153 "conversion #%d prototype:\n\tconversion: %%%s\n"
1154 "\t prototype: %s\n\t argument: %s\n", func,
1155 vname, i + 1, pfc->pfc_name, pfc->pfc_tstr,
1156 dt_node_type_name(vnp, n, sizeof (n)));
1157 }
1158 }
1159
1160 if ((flags & DT_PRINTF_EXACTLEN) && dnp != NULL) {
1161 xyerror(D_PRINTF_ARG_EXTRA,
1162 "%s( ) prototype mismatch: only %d arguments "
1163 "required by this format string\n", func, j);
1164 }
1165 }
1166
1167 void
1168 dt_printa_validate(dt_node_t *lhs, dt_node_t *rhs)
1169 {
1170 dt_ident_t *lid, *rid;
1171 dt_node_t *lproto, *rproto;
1172 int largc, rargc, argn;
1173 char n1[DT_TYPE_NAMELEN];
1174 char n2[DT_TYPE_NAMELEN];
1175
1176 assert(lhs->dn_kind == DT_NODE_AGG);
1177 assert(rhs->dn_kind == DT_NODE_AGG);
1178
1179 lid = lhs->dn_ident;
1180 rid = rhs->dn_ident;
1181
1182 lproto = ((dt_idsig_t *)lid->di_data)->dis_args;
1183 rproto = ((dt_idsig_t *)rid->di_data)->dis_args;
1184
1185 /*
1186 * First, get an argument count on each side. These must match.
1187 */
1188 for (largc = 0; lproto != NULL; lproto = lproto->dn_list)
1189 largc++;
1190
1191 for (rargc = 0; rproto != NULL; rproto = rproto->dn_list)
1192 rargc++;
1193
1194 if (largc != rargc) {
1195 xyerror(D_PRINTA_AGGKEY, "printa( ): @%s and @%s do not have "
1196 "matching key signatures: @%s has %d key%s, @%s has %d "
1197 "key%s", lid->di_name, rid->di_name,
1198 lid->di_name, largc, largc == 1 ? "" : "s",
1199 rid->di_name, rargc, rargc == 1 ? "" : "s");
1200 }
1201
1202 /*
1203 * Now iterate over the keys to verify that each type matches.
1204 */
1205 lproto = ((dt_idsig_t *)lid->di_data)->dis_args;
1206 rproto = ((dt_idsig_t *)rid->di_data)->dis_args;
1207
1208 for (argn = 1; lproto != NULL; argn++, lproto = lproto->dn_list,
1209 rproto = rproto->dn_list) {
1210 assert(rproto != NULL);
1211
1212 if (dt_node_is_argcompat(lproto, rproto))
1213 continue;
1214
1215 xyerror(D_PRINTA_AGGPROTO, "printa( ): @%s[ ] key #%d is "
1216 "incompatible with @%s:\n%9s key #%d: %s\n"
1217 "%9s key #%d: %s\n",
1218 rid->di_name, argn, lid->di_name, lid->di_name, argn,
1219 dt_node_type_name(lproto, n1, sizeof (n1)), rid->di_name,
1220 argn, dt_node_type_name(rproto, n2, sizeof (n2)));
1221 }
1222 }
1223
1224 static int
1225 dt_printf_getint(dtrace_hdl_t *dtp, const dtrace_recdesc_t *recp,
1226 uint_t nrecs, const void *buf, size_t len, int *ip)
1227 {
1228 uintptr_t addr;
1229
1230 if (nrecs == 0)
1231 return (dt_set_errno(dtp, EDT_DMISMATCH));
1232
1233 addr = (uintptr_t)buf + recp->dtrd_offset;
1234
1235 if (addr + sizeof (int) > (uintptr_t)buf + len)
1236 return (dt_set_errno(dtp, EDT_DOFFSET));
1237
1238 if (addr & (recp->dtrd_alignment - 1))
1239 return (dt_set_errno(dtp, EDT_DALIGN));
1240
1241 switch (recp->dtrd_size) {
1242 case sizeof (int8_t):
1243 *ip = (int)*((int8_t *)addr);
1244 break;
1245 case sizeof (int16_t):
1246 *ip = (int)*((int16_t *)addr);
1247 break;
1248 case sizeof (int32_t):
1249 *ip = (int)*((int32_t *)addr);
1250 break;
1251 case sizeof (int64_t):
1252 *ip = (int)*((int64_t *)addr);
1253 break;
1254 default:
1255 return (dt_set_errno(dtp, EDT_DMISMATCH));
1256 }
1257
1258 return (0);
1259 }
1260
1261 /*ARGSUSED*/
1262 static int
1263 pfprint_average(dtrace_hdl_t *dtp, FILE *fp, const char *format,
1264 const dt_pfargd_t *pfd, const void *addr, size_t size, uint64_t normal)
1265 {
1266 const uint64_t *data = addr;
1267
1268 if (size != sizeof (uint64_t) * 2)
1269 return (dt_set_errno(dtp, EDT_DMISMATCH));
1270
1271 return (dt_printf(dtp, fp, format,
1272 data[0] ? data[1] / normal / data[0] : 0));
1273 }
1274
1275 /*ARGSUSED*/
1276 static int
1277 pfprint_stddev(dtrace_hdl_t *dtp, FILE *fp, const char *format,
1278 const dt_pfargd_t *pfd, const void *addr, size_t size, uint64_t normal)
1279 {
1280 const uint64_t *data = addr;
1281
1282 if (size != sizeof (uint64_t) * 4)
1283 return (dt_set_errno(dtp, EDT_DMISMATCH));
1284
1285 return (dt_printf(dtp, fp, format,
1286 dt_stddev((uint64_t *)data, normal)));
1287 }
1288
1289 /*ARGSUSED*/
1290 static int
1291 pfprint_quantize(dtrace_hdl_t *dtp, FILE *fp, const char *format,
1292 const dt_pfargd_t *pfd, const void *addr, size_t size, uint64_t normal)
1293 {
1294 return (dt_print_quantize(dtp, fp, addr, size, normal));
1295 }
1296
1297 /*ARGSUSED*/
1298 static int
1299 pfprint_lquantize(dtrace_hdl_t *dtp, FILE *fp, const char *format,
1300 const dt_pfargd_t *pfd, const void *addr, size_t size, uint64_t normal)
1301 {
1302 return (dt_print_lquantize(dtp, fp, addr, size, normal));
1303 }
1304
1305 /*ARGSUSED*/
1306 static int
1307 pfprint_llquantize(dtrace_hdl_t *dtp, FILE *fp, const char *format,
1308 const dt_pfargd_t *pfd, const void *addr, size_t size, uint64_t normal)
1309 {
1310 return (dt_print_llquantize(dtp, fp, addr, size, normal));
1311 }
1312
1313 static int
1314 dt_printf_format(dtrace_hdl_t *dtp, FILE *fp, const dt_pfargv_t *pfv,
1315 const dtrace_recdesc_t *recs, uint_t nrecs, const void *buf,
1316 size_t len, const dtrace_aggdata_t **aggsdata, int naggvars)
1317 {
1318 dt_pfargd_t *pfd = pfv->pfv_argv;
1319 const dtrace_recdesc_t *recp = recs;
1320 const dtrace_aggdata_t *aggdata;
1321 dtrace_aggdesc_t *agg;
1322 caddr_t lim = (caddr_t)buf + len, limit;
1323 char format[64] = "%";
1324 int i, aggrec, curagg = -1;
1325 uint64_t normal;
1326
1327 /*
1328 * If we are formatting an aggregation, set 'aggrec' to the index of
1329 * the final record description (the aggregation result) so we can use
1330 * this record index with any conversion where DT_PFCONV_AGG is set.
1331 * (The actual aggregation used will vary as we increment through the
1332 * aggregation variables that we have been passed.) Finally, we
1333 * decrement nrecs to prevent this record from being used with any
1334 * other conversion.
1335 */
1336 if (pfv->pfv_flags & DT_PRINTF_AGGREGATION) {
1337 assert(aggsdata != NULL);
1338 assert(naggvars > 0);
1339
1340 if (nrecs == 0)
1341 return (dt_set_errno(dtp, EDT_DMISMATCH));
1342
1343 curagg = naggvars > 1 ? 1 : 0;
1344 aggdata = aggsdata[0];
1345 aggrec = aggdata->dtada_desc->dtagd_nrecs - 1;
1346 nrecs--;
1347 }
1348
1349 for (i = 0; i < pfv->pfv_argc; i++, pfd = pfd->pfd_next) {
1350 const dt_pfconv_t *pfc = pfd->pfd_conv;
1351 int width = pfd->pfd_width;
1352 int prec = pfd->pfd_prec;
1353 int rval;
1354
1355 char *f = format + 1; /* skip initial '%' */
1356 const dtrace_recdesc_t *rec;
1357 dt_pfprint_f *func;
1358 caddr_t addr;
1359 size_t size;
1360 uint32_t flags;
1361
1362 if (pfd->pfd_preflen != 0) {
1363 char *tmp = alloca(pfd->pfd_preflen + 1);
1364
1365 bcopy(pfd->pfd_prefix, tmp, pfd->pfd_preflen);
1366 tmp[pfd->pfd_preflen] = '\0';
1367
1368 if ((rval = dt_printf(dtp, fp, tmp)) < 0)
1369 return (rval);
1370
1371 if (pfv->pfv_flags & DT_PRINTF_AGGREGATION) {
1372 /*
1373 * For printa(), we flush the buffer after each
1374 * prefix, setting the flags to indicate that
1375 * this is part of the printa() format string.
1376 */
1377 flags = DTRACE_BUFDATA_AGGFORMAT;
1378
1379 if (pfc == NULL && i == pfv->pfv_argc - 1)
1380 flags |= DTRACE_BUFDATA_AGGLAST;
1381
1382 if (dt_buffered_flush(dtp, NULL, NULL,
1383 aggdata, flags) < 0)
1384 return (-1);
1385 }
1386 }
1387
1388 if (pfc == NULL) {
1389 if (pfv->pfv_argc == 1)
1390 return (nrecs != 0);
1391 continue;
1392 }
1393
1394 /*
1395 * If the conversion is %%, just invoke the print callback
1396 * with no data record and continue; it consumes no record.
1397 */
1398 if (pfc->pfc_print == &pfprint_pct) {
1399 if (pfc->pfc_print(dtp, fp, NULL, pfd, NULL, 0, 1) >= 0)
1400 continue;
1401 return (-1); /* errno is set for us */
1402 }
1403
1404 if (pfd->pfd_flags & DT_PFCONV_DYNWIDTH) {
1405 if (dt_printf_getint(dtp, recp++, nrecs--, buf,
1406 len, &width) == -1)
1407 return (-1); /* errno is set for us */
1408 pfd->pfd_dynwidth = width;
1409 } else {
1410 pfd->pfd_dynwidth = 0;
1411 }
1412
1413 if ((pfd->pfd_flags & DT_PFCONV_DYNPREC) && dt_printf_getint(
1414 dtp, recp++, nrecs--, buf, len, &prec) == -1)
1415 return (-1); /* errno is set for us */
1416
1417 if (pfd->pfd_flags & DT_PFCONV_AGG) {
1418 /*
1419 * This should be impossible -- the compiler shouldn't
1420 * create a DT_PFCONV_AGG conversion without an
1421 * aggregation present. Still, we'd rather fail
1422 * gracefully than blow up...
1423 */
1424 if (aggsdata == NULL)
1425 return (dt_set_errno(dtp, EDT_DMISMATCH));
1426
1427 aggdata = aggsdata[curagg];
1428 agg = aggdata->dtada_desc;
1429
1430 /*
1431 * We increment the current aggregation variable, but
1432 * not beyond the number of aggregation variables that
1433 * we're printing. This has the (desired) effect that
1434 * DT_PFCONV_AGG conversions beyond the number of
1435 * aggregation variables (re-)convert the aggregation
1436 * value of the last aggregation variable.
1437 */
1438 if (curagg < naggvars - 1)
1439 curagg++;
1440
1441 rec = &agg->dtagd_rec[aggrec];
1442 addr = aggdata->dtada_data + rec->dtrd_offset;
1443 limit = addr + aggdata->dtada_size;
1444 normal = aggdata->dtada_normal;
1445 flags = DTRACE_BUFDATA_AGGVAL;
1446 } else {
1447 if (nrecs == 0)
1448 return (dt_set_errno(dtp, EDT_DMISMATCH));
1449
1450 if (pfv->pfv_flags & DT_PRINTF_AGGREGATION) {
1451 /*
1452 * When printing aggregation keys, we always
1453 * set the aggdata to be the representative
1454 * (zeroth) aggregation. The aggdata isn't
1455 * actually used here in this case, but it is
1456 * passed to the buffer handler and must
1457 * therefore still be correct.
1458 */
1459 aggdata = aggsdata[0];
1460 flags = DTRACE_BUFDATA_AGGKEY;
1461 }
1462
1463 rec = recp++;
1464 nrecs--;
1465 addr = (caddr_t)buf + rec->dtrd_offset;
1466 limit = lim;
1467 normal = 1;
1468 }
1469
1470 size = rec->dtrd_size;
1471
1472 if (addr + size > limit) {
1473 dt_dprintf("bad size: addr=%p size=0x%x lim=%p\n",
1474 (void *)addr, rec->dtrd_size, (void *)lim);
1475 return (dt_set_errno(dtp, EDT_DOFFSET));
1476 }
1477
1478 if (rec->dtrd_alignment != 0 &&
1479 ((uintptr_t)addr & (rec->dtrd_alignment - 1)) != 0) {
1480 dt_dprintf("bad align: addr=%p size=0x%x align=0x%x\n",
1481 (void *)addr, rec->dtrd_size, rec->dtrd_alignment);
1482 return (dt_set_errno(dtp, EDT_DALIGN));
1483 }
1484
1485 switch (rec->dtrd_action) {
1486 case DTRACEAGG_AVG:
1487 func = pfprint_average;
1488 break;
1489 case DTRACEAGG_STDDEV:
1490 func = pfprint_stddev;
1491 break;
1492 case DTRACEAGG_QUANTIZE:
1493 func = pfprint_quantize;
1494 break;
1495 case DTRACEAGG_LQUANTIZE:
1496 func = pfprint_lquantize;
1497 break;
1498 case DTRACEAGG_LLQUANTIZE:
1499 func = pfprint_llquantize;
1500 break;
1501 case DTRACEACT_MOD:
1502 func = pfprint_mod;
1503 break;
1504 case DTRACEACT_UMOD:
1505 func = pfprint_umod;
1506 break;
1507 default:
1508 func = pfc->pfc_print;
1509 break;
1510 }
1511
1512 if (pfd->pfd_flags & DT_PFCONV_ALT)
1513 *f++ = '#';
1514 if (pfd->pfd_flags & DT_PFCONV_ZPAD)
1515 *f++ = '0';
1516 if (width < 0 || (pfd->pfd_flags & DT_PFCONV_LEFT))
1517 *f++ = '-';
1518 if (pfd->pfd_flags & DT_PFCONV_SPOS)
1519 *f++ = '+';
1520 if (pfd->pfd_flags & DT_PFCONV_GROUP)
1521 *f++ = '\'';
1522 if (pfd->pfd_flags & DT_PFCONV_SPACE)
1523 *f++ = ' ';
1524
1525 /*
1526 * If we're printing a stack and DT_PFCONV_LEFT is set, we
1527 * don't add the width to the format string. See the block
1528 * comment in pfprint_stack() for a description of the
1529 * behavior in this case.
1530 */
1531 if (func == pfprint_stack && (pfd->pfd_flags & DT_PFCONV_LEFT))
1532 width = 0;
1533
1534 if (width != 0)
1535 f += snprintf(f, sizeof (format), "%d", ABS(width));
1536
1537 if (prec > 0)
1538 f += snprintf(f, sizeof (format), ".%d", prec);
1539
1540 (void) strcpy(f, pfd->pfd_fmt);
1541 pfd->pfd_rec = rec;
1542
1543 if (func(dtp, fp, format, pfd, addr, size, normal) < 0)
1544 return (-1); /* errno is set for us */
1545
1546 if (pfv->pfv_flags & DT_PRINTF_AGGREGATION) {
1547 /*
1548 * For printa(), we flush the buffer after each tuple
1549 * element, inidicating that this is the last record
1550 * as appropriate.
1551 */
1552 if (i == pfv->pfv_argc - 1)
1553 flags |= DTRACE_BUFDATA_AGGLAST;
1554
1555 if (dt_buffered_flush(dtp, NULL,
1556 rec, aggdata, flags) < 0)
1557 return (-1);
1558 }
1559 }
1560
1561 return ((int)(recp - recs));
1562 }
1563
1564 int
1565 dtrace_sprintf(dtrace_hdl_t *dtp, FILE *fp, void *fmtdata,
1566 const dtrace_recdesc_t *recp, uint_t nrecs, const void *buf, size_t len)
1567 {
1568 dtrace_optval_t size;
1569 int rval;
1570
1571 rval = dtrace_getopt(dtp, "strsize", &size);
1572 assert(rval == 0);
1573 assert(dtp->dt_sprintf_buflen == 0);
1574
1575 if (dtp->dt_sprintf_buf != NULL)
1576 free(dtp->dt_sprintf_buf);
1577
1578 if ((dtp->dt_sprintf_buf = malloc(size)) == NULL)
1579 return (dt_set_errno(dtp, EDT_NOMEM));
1580
1581 bzero(dtp->dt_sprintf_buf, size);
1582 dtp->dt_sprintf_buflen = size;
1583 rval = dt_printf_format(dtp, fp, fmtdata, recp, nrecs, buf, len,
1584 NULL, 0);
1585 dtp->dt_sprintf_buflen = 0;
1586
1587 if (rval == -1)
1588 free(dtp->dt_sprintf_buf);
1589
1590 return (rval);
1591 }
1592
1593 /*ARGSUSED*/
1594 int
1595 dtrace_system(dtrace_hdl_t *dtp, FILE *fp, void *fmtdata,
1596 const dtrace_probedata_t *data, const dtrace_recdesc_t *recp,
1597 uint_t nrecs, const void *buf, size_t len)
1598 {
1599 int rval = dtrace_sprintf(dtp, fp, fmtdata, recp, nrecs, buf, len);
1600
1601 if (rval == -1)
1602 return (rval);
1603
1604 /*
1605 * Before we execute the specified command, flush fp to assure that
1606 * any prior dt_printf()'s appear before the output of the command
1607 * not after it.
1608 */
1609 (void) fflush(fp);
1610
1611 if (system(dtp->dt_sprintf_buf) == -1)
1612 return (dt_set_errno(dtp, errno));
1613
1614 return (rval);
1615 }
1616
1617 int
1618 dtrace_freopen(dtrace_hdl_t *dtp, FILE *fp, void *fmtdata,
1619 const dtrace_probedata_t *data, const dtrace_recdesc_t *recp,
1620 uint_t nrecs, const void *buf, size_t len)
1621 {
1622 char selfbuf[40], restorebuf[40], *filename;
1623 FILE *nfp;
1624 int rval, errval;
1625 dt_pfargv_t *pfv = fmtdata;
1626 dt_pfargd_t *pfd = pfv->pfv_argv;
1627
1628 rval = dtrace_sprintf(dtp, fp, fmtdata, recp, nrecs, buf, len);
1629
1630 if (rval == -1 || fp == NULL)
1631 return (rval);
1632
1633 if (pfd->pfd_preflen != 0 &&
1634 strcmp(pfd->pfd_prefix, DT_FREOPEN_RESTORE) == 0) {
1635 /*
1636 * The only way to have the format string set to the value
1637 * DT_FREOPEN_RESTORE is via the empty freopen() string --
1638 * denoting that we should restore the old stdout.
1639 */
1640 assert(strcmp(dtp->dt_sprintf_buf, DT_FREOPEN_RESTORE) == 0);
1641
1642 if (dtp->dt_stdout_fd == -1) {
1643 /*
1644 * We could complain here by generating an error,
1645 * but it seems like overkill: it seems that calling
1646 * freopen() to restore stdout when freopen() has
1647 * never before been called should just be a no-op,
1648 * so we just return in this case.
1649 */
1650 return (rval);
1651 }
1652
1653 (void) snprintf(restorebuf, sizeof (restorebuf),
1654 "/dev/fd/%d", dtp->dt_stdout_fd);
1655 filename = restorebuf;
1656 } else {
1657 filename = dtp->dt_sprintf_buf;
1658 }
1659
1660 /*
1661 * freopen(3C) will always close the specified stream and underlying
1662 * file descriptor -- even if the specified file can't be opened.
1663 * Even for the semantic cesspool that is standard I/O, this is
1664 * surprisingly brain-dead behavior: it means that any failure to
1665 * open the specified file destroys the specified stream in the
1666 * process -- which is particularly relevant when the specified stream
1667 * happens (or rather, happened) to be stdout. This could be resolved
1668 * were there an "fdreopen()" equivalent of freopen() that allowed one
1669 * to pass a file descriptor instead of the name of a file, but there
1670 * is no such thing. However, we can effect this ourselves by first
1671 * fopen()'ing the desired file, and then (assuming that that works),
1672 * freopen()'ing "/dev/fd/[fileno]", where [fileno] is the underlying
1673 * file descriptor for the fopen()'d file. This way, if the fopen()
1674 * fails, we can fail the operation without destroying stdout.
1675 */
1676 if ((nfp = fopen(filename, "aF")) == NULL) {
1677 char *msg = strerror(errno), *faultstr;
1678 int len = 80;
1679
1680 len += strlen(msg) + strlen(filename);
1681 faultstr = alloca(len);
1682
1683 (void) snprintf(faultstr, len, "couldn't freopen() \"%s\": %s",
1684 filename, strerror(errno));
1685
1686 if ((errval = dt_handle_liberr(dtp, data, faultstr)) == 0)
1687 return (rval);
1688
1689 return (errval);
1690 }
1691
1692 (void) snprintf(selfbuf, sizeof (selfbuf), "/dev/fd/%d", fileno(nfp));
1693
1694 if (dtp->dt_stdout_fd == -1) {
1695 /*
1696 * If this is the first time that we're calling freopen(),
1697 * we're going to stash away the file descriptor for stdout.
1698 * We don't expect the dup(2) to fail, so if it does we must
1699 * return failure.
1700 */
1701 if ((dtp->dt_stdout_fd = dup(fileno(fp))) == -1) {
1702 (void) fclose(nfp);
1703 return (dt_set_errno(dtp, errno));
1704 }
1705 }
1706
1707 if (freopen(selfbuf, "aF", fp) == NULL) {
1708 (void) fclose(nfp);
1709 return (dt_set_errno(dtp, errno));
1710 }
1711
1712 (void) fclose(nfp);
1713
1714 return (rval);
1715 }
1716
1717 /*ARGSUSED*/
1718 int
1719 dtrace_fprintf(dtrace_hdl_t *dtp, FILE *fp, void *fmtdata,
1720 const dtrace_probedata_t *data, const dtrace_recdesc_t *recp,
1721 uint_t nrecs, const void *buf, size_t len)
1722 {
1723 return (dt_printf_format(dtp, fp, fmtdata,
1724 recp, nrecs, buf, len, NULL, 0));
1725 }
1726
1727 void *
1728 dtrace_printf_create(dtrace_hdl_t *dtp, const char *s)
1729 {
1730 dt_pfargv_t *pfv = dt_printf_create(dtp, s);
1731 dt_pfargd_t *pfd;
1732 int i;
1733
1734 if (pfv == NULL)
1735 return (NULL); /* errno has been set for us */
1736
1737 pfd = pfv->pfv_argv;
1738
1739 for (i = 0; i < pfv->pfv_argc; i++, pfd = pfd->pfd_next) {
1740 const dt_pfconv_t *pfc = pfd->pfd_conv;
1741
1742 if (pfc == NULL)
1743 continue;
1744
1745 /*
1746 * If the output format is not %s then we assume that we have
1747 * been given a correctly-sized format string, so we copy the
1748 * true format name including the size modifier. If the output
1749 * format is %s, then either the input format is %s as well or
1750 * it is one of our custom formats (e.g. pfprint_addr), so we
1751 * must set pfd_fmt to be the output format conversion "s".
1752 */
1753 if (strcmp(pfc->pfc_ofmt, "s") != 0)
1754 (void) strcat(pfd->pfd_fmt, pfc->pfc_name);
1755 else
1756 (void) strcat(pfd->pfd_fmt, pfc->pfc_ofmt);
1757 }
1758
1759 return (pfv);
1760 }
1761
1762 void *
1763 dtrace_printa_create(dtrace_hdl_t *dtp, const char *s)
1764 {
1765 dt_pfargv_t *pfv = dtrace_printf_create(dtp, s);
1766
1767 if (pfv == NULL)
1768 return (NULL); /* errno has been set for us */
1769
1770 pfv->pfv_flags |= DT_PRINTF_AGGREGATION;
1771
1772 return (pfv);
1773 }
1774
1775 /*ARGSUSED*/
1776 size_t
1777 dtrace_printf_format(dtrace_hdl_t *dtp, void *fmtdata, char *s, size_t len)
1778 {
1779 dt_pfargv_t *pfv = fmtdata;
1780 dt_pfargd_t *pfd = pfv->pfv_argv;
1781
1782 /*
1783 * An upper bound on the string length is the length of the original
1784 * format string, plus three times the number of conversions (each
1785 * conversion could add up an additional "ll" and/or pfd_width digit
1786 * in the case of converting %? to %16) plus one for a terminating \0.
1787 */
1788 size_t formatlen = strlen(pfv->pfv_format) + 3 * pfv->pfv_argc + 1;
1789 char *format = alloca(formatlen);
1790 char *f = format;
1791 int i, j;
1792
1793 for (i = 0; i < pfv->pfv_argc; i++, pfd = pfd->pfd_next) {
1794 const dt_pfconv_t *pfc = pfd->pfd_conv;
1795 const char *str;
1796 int width = pfd->pfd_width;
1797 int prec = pfd->pfd_prec;
1798
1799 if (pfd->pfd_preflen != 0) {
1800 for (j = 0; j < pfd->pfd_preflen; j++)
1801 *f++ = pfd->pfd_prefix[j];
1802 }
1803
1804 if (pfc == NULL)
1805 continue;
1806
1807 *f++ = '%';
1808
1809 if (pfd->pfd_flags & DT_PFCONV_ALT)
1810 *f++ = '#';
1811 if (pfd->pfd_flags & DT_PFCONV_ZPAD)
1812 *f++ = '0';
1813 if (pfd->pfd_flags & DT_PFCONV_LEFT)
1814 *f++ = '-';
1815 if (pfd->pfd_flags & DT_PFCONV_SPOS)
1816 *f++ = '+';
1817 if (pfd->pfd_flags & DT_PFCONV_DYNWIDTH)
1818 *f++ = '*';
1819 if (pfd->pfd_flags & DT_PFCONV_DYNPREC) {
1820 *f++ = '.';
1821 *f++ = '*';
1822 }
1823 if (pfd->pfd_flags & DT_PFCONV_GROUP)
1824 *f++ = '\'';
1825 if (pfd->pfd_flags & DT_PFCONV_SPACE)
1826 *f++ = ' ';
1827 if (pfd->pfd_flags & DT_PFCONV_AGG)
1828 *f++ = '@';
1829
1830 if (width != 0)
1831 f += snprintf(f, sizeof (format), "%d", width);
1832
1833 if (prec != 0)
1834 f += snprintf(f, sizeof (format), ".%d", prec);
1835
1836 /*
1837 * If the output format is %s, then either %s is the underlying
1838 * conversion or the conversion is one of our customized ones,
1839 * e.g. pfprint_addr. In these cases, put the original string
1840 * name of the conversion (pfc_name) into the pickled format
1841 * string rather than the derived conversion (pfd_fmt).
1842 */
1843 if (strcmp(pfc->pfc_ofmt, "s") == 0)
1844 str = pfc->pfc_name;
1845 else
1846 str = pfd->pfd_fmt;
1847
1848 for (j = 0; str[j] != '\0'; j++)
1849 *f++ = str[j];
1850 }
1851
1852 *f = '\0'; /* insert nul byte; do not count in return value */
1853
1854 assert(f < format + formatlen);
1855 (void) strncpy(s, format, len);
1856
1857 return ((size_t)(f - format));
1858 }
1859
1860 static int
1861 dt_fprinta(const dtrace_aggdata_t *adp, void *arg)
1862 {
1863 const dtrace_aggdesc_t *agg = adp->dtada_desc;
1864 const dtrace_recdesc_t *recp = &agg->dtagd_rec[0];
1865 uint_t nrecs = agg->dtagd_nrecs;
1866 dt_pfwalk_t *pfw = arg;
1867 dtrace_hdl_t *dtp = pfw->pfw_argv->pfv_dtp;
1868 int id;
1869
1870 if (dt_printf_getint(dtp, recp++, nrecs--,
1871 adp->dtada_data, adp->dtada_size, &id) != 0 || pfw->pfw_aid != id)
1872 return (0); /* no aggregation id or id does not match */
1873
1874 if (dt_printf_format(dtp, pfw->pfw_fp, pfw->pfw_argv,
1875 recp, nrecs, adp->dtada_data, adp->dtada_size, &adp, 1) == -1)
1876 return (pfw->pfw_err = dtp->dt_errno);
1877
1878 /*
1879 * Cast away the const to set the bit indicating that this aggregation
1880 * has been printed.
1881 */
1882 ((dtrace_aggdesc_t *)agg)->dtagd_flags |= DTRACE_AGD_PRINTED;
1883
1884 return (0);
1885 }
1886
1887 static int
1888 dt_fprintas(const dtrace_aggdata_t **aggsdata, int naggvars, void *arg)
1889 {
1890 const dtrace_aggdata_t *aggdata = aggsdata[0];
1891 const dtrace_aggdesc_t *agg = aggdata->dtada_desc;
1892 const dtrace_recdesc_t *rec = &agg->dtagd_rec[1];
1893 uint_t nrecs = agg->dtagd_nrecs - 1;
1894 dt_pfwalk_t *pfw = arg;
1895 dtrace_hdl_t *dtp = pfw->pfw_argv->pfv_dtp;
1896 int i;
1897
1898 if (dt_printf_format(dtp, pfw->pfw_fp, pfw->pfw_argv,
1899 rec, nrecs, aggdata->dtada_data, aggdata->dtada_size,
1900 aggsdata, naggvars) == -1)
1901 return (pfw->pfw_err = dtp->dt_errno);
1902
1903 /*
1904 * For each aggregation, indicate that it has been printed, casting
1905 * away the const as necessary.
1906 */
1907 for (i = 1; i < naggvars; i++) {
1908 agg = aggsdata[i]->dtada_desc;
1909 ((dtrace_aggdesc_t *)agg)->dtagd_flags |= DTRACE_AGD_PRINTED;
1910 }
1911
1912 return (0);
1913 }
1914 /*ARGSUSED*/
1915 int
1916 dtrace_fprinta(dtrace_hdl_t *dtp, FILE *fp, void *fmtdata,
1917 const dtrace_probedata_t *data, const dtrace_recdesc_t *recs,
1918 uint_t nrecs, const void *buf, size_t len)
1919 {
1920 dt_pfwalk_t pfw;
1921 int i, naggvars = 0;
1922 dtrace_aggvarid_t *aggvars;
1923
1924 aggvars = alloca(nrecs * sizeof (dtrace_aggvarid_t));
1925
1926 /*
1927 * This might be a printa() with multiple aggregation variables. We
1928 * need to scan forward through the records until we find a record from
1929 * a different statement.
1930 */
1931 for (i = 0; i < nrecs; i++) {
1932 const dtrace_recdesc_t *nrec = &recs[i];
1933
1934 if (nrec->dtrd_uarg != recs->dtrd_uarg)
1935 break;
1936
1937 if (nrec->dtrd_action != recs->dtrd_action)
1938 return (dt_set_errno(dtp, EDT_BADAGG));
1939
1940 aggvars[naggvars++] =
1941 /* LINTED - alignment */
1942 *((dtrace_aggvarid_t *)((caddr_t)buf + nrec->dtrd_offset));
1943 }
1944
1945 if (naggvars == 0)
1946 return (dt_set_errno(dtp, EDT_BADAGG));
1947
1948 pfw.pfw_argv = fmtdata;
1949 pfw.pfw_fp = fp;
1950 pfw.pfw_err = 0;
1951
1952 if (naggvars == 1) {
1953 pfw.pfw_aid = aggvars[0];
1954
1955 if (dtrace_aggregate_walk_sorted(dtp,
1956 dt_fprinta, &pfw) == -1 || pfw.pfw_err != 0)
1957 return (-1); /* errno is set for us */
1958 } else {
1959 if (dtrace_aggregate_walk_joined(dtp, aggvars, naggvars,
1960 dt_fprintas, &pfw) == -1 || pfw.pfw_err != 0)
1961 return (-1); /* errno is set for us */
1962 }
1963
1964 return (i);
1965 }
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