xref: /illumos-gate/usr/src/cmd/ctfdump/ctfdump.c (revision 1146e6b36a51a32283a4cfc8530fd73b88b79a78)
1 /*
2  * This file and its contents are supplied under the terms of the
3  * Common Development and Distribution License ("CDDL"), version 1.0.
4  * You may only use this file in accordance with the terms of version
5  * 1.0 of the CDDL.
6  *
7  * A full copy of the text of the CDDL should have accompanied this
8  * source.  A copy of the CDDL is also available via the Internet at
9  * http://www.illumos.org/license/CDDL.
10  */
11 
12 /*
13  * Copyright 2019, Joyent, Inc.
14  */
15 
16 /*
17  * Dump information about CTF containers.
18  */
19 
20 #include <stdio.h>
21 #include <unistd.h>
22 #include <libctf.h>
23 #include <libgen.h>
24 #include <stdarg.h>
25 #include <stdlib.h>
26 #include <stddef.h>
27 #include <sys/sysmacros.h>
28 #include <sys/types.h>
29 #include <sys/stat.h>
30 #include <sys/note.h>
31 #include <fcntl.h>
32 #include <errno.h>
33 #include <string.h>
34 #include <strings.h>
35 #include <err.h>
36 
37 #define	MAX_NAMELEN (512)
38 
39 typedef enum ctfdump_arg {
40 	CTFDUMP_OBJECTS =	0x001,
41 	CTFDUMP_FUNCTIONS =	0x002,
42 	CTFDUMP_HEADER =	0x004,
43 	CTFDUMP_LABELS =	0x008,
44 	CTFDUMP_STRINGS =	0x010,
45 	CTFDUMP_STATS =		0x020,
46 	CTFDUMP_TYPES =		0x040,
47 	CTFDUMP_DEFAULT =	0x07f,
48 	CTFDUMP_OUTPUT =	0x080,
49 	CTFDUMP_SOURCE =	0x100,
50 } ctfdump_arg_t;
51 
52 typedef struct ctfdump_stat {
53 	ulong_t		cs_ndata;		/* number of data objects */
54 	ulong_t		cs_nfuncs;		/* number of functions */
55 	ulong_t		cs_nfuncargs;		/* number of function args */
56 	ulong_t		cs_nfuncmax;		/* largest number of args */
57 	ulong_t		cs_ntypes[CTF_K_MAX];	/* number of types */
58 	ulong_t		cs_nsmembs;		/* number of struct members */
59 	ulong_t		cs_nsmax;		/* largest number of members */
60 	ulong_t		cs_structsz;		/* sum of structures sizes */
61 	ulong_t		cs_sszmax;		/* largest structure */
62 	ulong_t		cs_numembs;		/* number of union members */
63 	ulong_t		cs_numax;		/* largest number of members */
64 	ulong_t		cs_unionsz;		/* sum of unions sizes */
65 	ulong_t		cs_uszmax;		/* largest union */
66 	ulong_t		cs_nemembs;		/* number of enum members */
67 	ulong_t		cs_nemax;		/* largest number of members */
68 	ulong_t		cs_nstrings;		/* number of strings */
69 	ulong_t		cs_strsz;		/* string size */
70 	ulong_t		cs_strmax;		/* longest string */
71 } ctfdump_stat_t;
72 
73 typedef struct {
74 	char ci_name[MAX_NAMELEN];
75 	ctf_id_t ci_id;
76 	ulong_t ci_symidx;
77 	ctf_funcinfo_t ci_funcinfo;
78 } ctf_idname_t;
79 
80 static ctf_idname_t *idnames;
81 static const char *g_progname;
82 static ctfdump_arg_t g_dump;
83 static ctf_file_t *g_fp;
84 static ctfdump_stat_t g_stats;
85 static ctf_id_t *g_fargc;
86 static int g_nfargc;
87 
88 static int g_exit = 0;
89 
90 static const char *ctfdump_fpenc[] = {
91 	NULL,
92 	"SINGLE",
93 	"DOUBLE",
94 	"COMPLEX",
95 	"DCOMPLEX",
96 	"LDCOMPLEX",
97 	"LDOUBLE",
98 	"INTERVAL",
99 	"DINTERVAL",
100 	"LDINTERVAL",
101 	"IMAGINARY",
102 	"DIMAGINARY",
103 	"LDIMAGINARY"
104 };
105 
106 /*
107  * When stats are requested, we have to go through everything. To make our lives
108  * easier, we'll just always allow the code to print everything out, but only
109  * output it if we have actually enabled that section.
110  */
111 static void
112 ctfdump_printf(ctfdump_arg_t arg, const char *fmt, ...)
113 {
114 	va_list ap;
115 
116 	if ((arg & g_dump) == 0)
117 		return;
118 
119 	va_start(ap, fmt);
120 	(void) vfprintf(stdout, fmt, ap);
121 	va_end(ap);
122 }
123 
124 static void
125 ctfdump_fatal(const char *fmt, ...)
126 {
127 	va_list ap;
128 
129 	(void) fprintf(stderr, "%s: ", g_progname);
130 	va_start(ap, fmt);
131 	(void) vfprintf(stderr, fmt, ap);
132 	va_end(ap);
133 
134 	exit(1);
135 }
136 
137 static void
138 ctfdump_usage(const char *fmt, ...)
139 {
140 	if (fmt != NULL) {
141 		va_list ap;
142 		(void) fprintf(stderr, "%s: ", g_progname);
143 		va_start(ap, fmt);
144 		(void) vfprintf(stderr, fmt, ap);
145 		va_end(ap);
146 	}
147 
148 	(void) fprintf(stderr, "Usage: %s [-cdfhlsSt] [-p parent] [-u outfile] "
149 	    "file\n"
150 	    "\n"
151 	    "\t-c  dump C-style output\n"
152 	    "\t-d  dump object data\n"
153 	    "\t-f  dump function data\n"
154 	    "\t-h  dump the CTF header\n"
155 	    "\t-l  dump the label table\n"
156 	    "\t-p  use parent to supply additional information\n"
157 	    "\t-s  dump the string table\n"
158 	    "\t-S  dump statistics about the CTF container\n"
159 	    "\t-t  dump type information\n"
160 	    "\t-u  dump uncompressed CTF data to outfile\n",
161 	    g_progname);
162 }
163 
164 static void
165 ctfdump_title(ctfdump_arg_t arg, const char *header)
166 {
167 	static const char line[] = "----------------------------------------"
168 	    "----------------------------------------";
169 	ctfdump_printf(arg, "\n- %s %.*s\n\n", header, (int)78 - strlen(header),
170 	    line);
171 }
172 
173 static int
174 ctfdump_objects_cb(const char *name, ctf_id_t id, ulong_t symidx, void *arg)
175 {
176 	_NOTE(ARGUNUSED(arg));
177 
178 	int len;
179 
180 	len = snprintf(NULL, 0, "  [%lu] %ld", g_stats.cs_ndata, id);
181 	ctfdump_printf(CTFDUMP_OBJECTS, "  [%lu] %ld %*s%s (%lu)\n",
182 	    g_stats.cs_ndata, id, MAX(15 - len, 0), "", name, symidx);
183 	g_stats.cs_ndata++;
184 	return (0);
185 }
186 
187 static void
188 ctfdump_objects(void)
189 {
190 	ctfdump_title(CTFDUMP_OBJECTS, "Data Objects");
191 	if (ctf_object_iter(g_fp, ctfdump_objects_cb, NULL) == CTF_ERR) {
192 		warnx("failed to dump objects: %s",
193 		    ctf_errmsg(ctf_errno(g_fp)));
194 		g_exit = 1;
195 	}
196 }
197 
198 static void
199 ctfdump_fargs_grow(int nargs)
200 {
201 	if (g_nfargc < nargs) {
202 		g_fargc = realloc(g_fargc, sizeof (ctf_id_t) * nargs);
203 		if (g_fargc == NULL)
204 			ctfdump_fatal("failed to get memory for %d "
205 			    "ctf_id_t's\n", nargs);
206 		g_nfargc = nargs;
207 	}
208 }
209 
210 static int
211 ctfdump_functions_cb(const char *name, ulong_t symidx, ctf_funcinfo_t *ctc,
212     void *arg)
213 {
214 	_NOTE(ARGUNUSED(arg));
215 	int i;
216 
217 	if (ctc->ctc_argc != 0) {
218 		ctfdump_fargs_grow(ctc->ctc_argc);
219 		if (ctf_func_args(g_fp, symidx, g_nfargc, g_fargc) == CTF_ERR)
220 			ctfdump_fatal("failed to get arguments for function "
221 			    "%s: %s\n", name, ctf_errmsg(ctf_errno(g_fp)));
222 	}
223 
224 	ctfdump_printf(CTFDUMP_FUNCTIONS,
225 	    "  [%lu] %s (%lu) returns: %ld args: (", g_stats.cs_nfuncs, name,
226 	    symidx, ctc->ctc_return);
227 	for (i = 0; i < ctc->ctc_argc; i++)
228 		ctfdump_printf(CTFDUMP_FUNCTIONS, "%ld%s", g_fargc[i],
229 		    i + 1 == ctc->ctc_argc ? "" : ", ");
230 	if (ctc->ctc_flags & CTF_FUNC_VARARG)
231 		ctfdump_printf(CTFDUMP_FUNCTIONS, "%s...",
232 		    ctc->ctc_argc == 0 ? "" : ", ");
233 	ctfdump_printf(CTFDUMP_FUNCTIONS, ")\n");
234 
235 	g_stats.cs_nfuncs++;
236 	g_stats.cs_nfuncargs += ctc->ctc_argc;
237 	g_stats.cs_nfuncmax = MAX(ctc->ctc_argc, g_stats.cs_nfuncmax);
238 
239 	return (0);
240 }
241 
242 static void
243 ctfdump_functions(void)
244 {
245 	ctfdump_title(CTFDUMP_FUNCTIONS, "Functions");
246 
247 	if (ctf_function_iter(g_fp, ctfdump_functions_cb, NULL) == CTF_ERR) {
248 		warnx("failed to dump functions: %s",
249 		    ctf_errmsg(ctf_errno(g_fp)));
250 		g_exit = 1;
251 	}
252 }
253 
254 static void
255 ctfdump_header(void)
256 {
257 	const ctf_header_t *hp;
258 	const char *parname, *parlabel;
259 
260 	ctfdump_title(CTFDUMP_HEADER, "CTF Header");
261 	ctf_dataptr(g_fp, (const void **)&hp, NULL);
262 	ctfdump_printf(CTFDUMP_HEADER, "  cth_magic    = 0x%04x\n",
263 	    hp->cth_magic);
264 	ctfdump_printf(CTFDUMP_HEADER, "  cth_version  = %u\n",
265 	    hp->cth_version);
266 	ctfdump_printf(CTFDUMP_HEADER, "  cth_flags    = 0x%02x\n",
267 	    ctf_flags(g_fp));
268 	parname = ctf_parent_name(g_fp);
269 	parlabel = ctf_parent_label(g_fp);
270 	ctfdump_printf(CTFDUMP_HEADER, "  cth_parlabel = %s\n",
271 	    parlabel == NULL ? "(anon)" : parlabel);
272 	ctfdump_printf(CTFDUMP_HEADER, "  cth_parname  = %s\n",
273 	    parname == NULL ? "(anon)" : parname);
274 	ctfdump_printf(CTFDUMP_HEADER, "  cth_lbloff   = %u\n",
275 	    hp->cth_lbloff);
276 	ctfdump_printf(CTFDUMP_HEADER, "  cth_objtoff  = %u\n",
277 	    hp->cth_objtoff);
278 	ctfdump_printf(CTFDUMP_HEADER, "  cth_funcoff  = %u\n",
279 	    hp->cth_funcoff);
280 	ctfdump_printf(CTFDUMP_HEADER, "  cth_typeoff  = %u\n",
281 	    hp->cth_typeoff);
282 	ctfdump_printf(CTFDUMP_HEADER, "  cth_stroff   = %u\n",
283 	    hp->cth_stroff);
284 	ctfdump_printf(CTFDUMP_HEADER, "  cth_strlen   = %u\n",
285 	    hp->cth_strlen);
286 }
287 
288 static int
289 ctfdump_labels_cb(const char *name, const ctf_lblinfo_t *li, void *arg)
290 {
291 	_NOTE(ARGUNUSED(arg));
292 	ctfdump_printf(CTFDUMP_LABELS, "  %5ld %s\n", li->ctb_typeidx, name);
293 	return (0);
294 }
295 
296 static void
297 ctfdump_labels(void)
298 {
299 	ctfdump_title(CTFDUMP_LABELS, "Label Table");
300 	if (ctf_label_iter(g_fp, ctfdump_labels_cb, NULL) == CTF_ERR) {
301 		warnx("failed to dump labels: %s",
302 		    ctf_errmsg(ctf_errno(g_fp)));
303 		g_exit = 1;
304 	}
305 }
306 
307 static int
308 ctfdump_strings_cb(const char *s, void *arg)
309 {
310 	size_t len = strlen(s) + 1;
311 	ulong_t *stroff = arg;
312 	ctfdump_printf(CTFDUMP_STRINGS, "  [%lu] %s\n", *stroff,
313 	    *s == '\0' ? "\\0" : s);
314 	*stroff = *stroff + len;
315 	g_stats.cs_nstrings++;
316 	g_stats.cs_strsz += len;
317 	g_stats.cs_strmax = MAX(g_stats.cs_strmax, len);
318 	return (0);
319 }
320 
321 static void
322 ctfdump_strings(void)
323 {
324 	ulong_t stroff = 0;
325 
326 	ctfdump_title(CTFDUMP_STRINGS, "String Table");
327 	if (ctf_string_iter(g_fp, ctfdump_strings_cb, &stroff) == CTF_ERR) {
328 		warnx("failed to dump strings: %s",
329 		    ctf_errmsg(ctf_errno(g_fp)));
330 		g_exit = 1;
331 	}
332 }
333 
334 static void
335 ctfdump_stat_int(const char *name, ulong_t value)
336 {
337 	ctfdump_printf(CTFDUMP_STATS, "  %-36s= %lu\n", name, value);
338 }
339 
340 static void
341 ctfdump_stat_fp(const char *name, float value)
342 {
343 	ctfdump_printf(CTFDUMP_STATS, "  %-36s= %.2f\n", name, value);
344 }
345 
346 static void
347 ctfdump_stats(void)
348 {
349 	int i;
350 	ulong_t sum;
351 
352 	ctfdump_title(CTFDUMP_STATS, "CTF Statistics");
353 
354 	ctfdump_stat_int("total number of data objects", g_stats.cs_ndata);
355 	ctfdump_printf(CTFDUMP_STATS, "\n");
356 	ctfdump_stat_int("total number of functions", g_stats.cs_nfuncs);
357 	ctfdump_stat_int("total number of function arguments",
358 	    g_stats.cs_nfuncargs);
359 	ctfdump_stat_int("maximum argument list length", g_stats.cs_nfuncmax);
360 	if (g_stats.cs_nfuncs != 0)
361 		ctfdump_stat_fp("average argument list length",
362 		    (float)g_stats.cs_nfuncargs / (float)g_stats.cs_nfuncs);
363 	ctfdump_printf(CTFDUMP_STATS, "\n");
364 
365 	sum = 0;
366 	for (i = 0; i < CTF_K_MAX; i++)
367 		sum += g_stats.cs_ntypes[i];
368 	ctfdump_stat_int("total number of types", sum);
369 	ctfdump_stat_int("total number of integers",
370 	    g_stats.cs_ntypes[CTF_K_INTEGER]);
371 	ctfdump_stat_int("total number of floats",
372 	    g_stats.cs_ntypes[CTF_K_FLOAT]);
373 	ctfdump_stat_int("total number of pointers",
374 	    g_stats.cs_ntypes[CTF_K_POINTER]);
375 	ctfdump_stat_int("total number of arrays",
376 	    g_stats.cs_ntypes[CTF_K_ARRAY]);
377 	ctfdump_stat_int("total number of func types",
378 	    g_stats.cs_ntypes[CTF_K_FUNCTION]);
379 	ctfdump_stat_int("total number of structs",
380 	    g_stats.cs_ntypes[CTF_K_STRUCT]);
381 	ctfdump_stat_int("total number of unions",
382 	    g_stats.cs_ntypes[CTF_K_UNION]);
383 	ctfdump_stat_int("total number of enums",
384 	    g_stats.cs_ntypes[CTF_K_ENUM]);
385 	ctfdump_stat_int("total number of forward tags",
386 	    g_stats.cs_ntypes[CTF_K_FORWARD]);
387 	ctfdump_stat_int("total number of typedefs",
388 	    g_stats.cs_ntypes[CTF_K_TYPEDEF]);
389 	ctfdump_stat_int("total number of volatile types",
390 	    g_stats.cs_ntypes[CTF_K_VOLATILE]);
391 	ctfdump_stat_int("total number of const types",
392 	    g_stats.cs_ntypes[CTF_K_CONST]);
393 	ctfdump_stat_int("total number of restrict types",
394 	    g_stats.cs_ntypes[CTF_K_RESTRICT]);
395 	ctfdump_stat_int("total number of unknowns (holes)",
396 	    g_stats.cs_ntypes[CTF_K_UNKNOWN]);
397 
398 	ctfdump_printf(CTFDUMP_STATS, "\n");
399 	ctfdump_stat_int("total number of struct members", g_stats.cs_nsmembs);
400 	ctfdump_stat_int("maximum number of struct members", g_stats.cs_nsmax);
401 	ctfdump_stat_int("total size of all structs", g_stats.cs_structsz);
402 	ctfdump_stat_int("maximum size of a struct", g_stats.cs_sszmax);
403 	if (g_stats.cs_ntypes[CTF_K_STRUCT] != 0) {
404 		ctfdump_stat_fp("average number of struct members",
405 		    (float)g_stats.cs_nsmembs /
406 		    (float)g_stats.cs_ntypes[CTF_K_STRUCT]);
407 		ctfdump_stat_fp("average size of a struct",
408 		    (float)g_stats.cs_structsz /
409 		    (float)g_stats.cs_ntypes[CTF_K_STRUCT]);
410 	}
411 	ctfdump_printf(CTFDUMP_STATS, "\n");
412 	ctfdump_stat_int("total number of union members", g_stats.cs_numembs);
413 	ctfdump_stat_int("maximum number of union members", g_stats.cs_numax);
414 	ctfdump_stat_int("total size of all unions", g_stats.cs_unionsz);
415 	ctfdump_stat_int("maximum size of a union", g_stats.cs_uszmax);
416 	if (g_stats.cs_ntypes[CTF_K_UNION] != 0) {
417 		ctfdump_stat_fp("average number of union members",
418 		    (float)g_stats.cs_numembs /
419 		    (float)g_stats.cs_ntypes[CTF_K_UNION]);
420 		ctfdump_stat_fp("average size of a union",
421 		    (float)g_stats.cs_unionsz /
422 		    (float)g_stats.cs_ntypes[CTF_K_UNION]);
423 	}
424 	ctfdump_printf(CTFDUMP_STATS, "\n");
425 
426 	ctfdump_stat_int("total number of enum members", g_stats.cs_nemembs);
427 	ctfdump_stat_int("maximum number of enum members", g_stats.cs_nemax);
428 	if (g_stats.cs_ntypes[CTF_K_ENUM] != 0) {
429 		ctfdump_stat_fp("average number of enum members",
430 		    (float)g_stats.cs_nemembs /
431 		    (float)g_stats.cs_ntypes[CTF_K_ENUM]);
432 	}
433 	ctfdump_printf(CTFDUMP_STATS, "\n");
434 
435 	ctfdump_stat_int("total number of strings", g_stats.cs_nstrings);
436 	ctfdump_stat_int("bytes of string data", g_stats.cs_strsz);
437 	ctfdump_stat_int("maximum string length", g_stats.cs_strmax);
438 	if (g_stats.cs_nstrings != 0)
439 		ctfdump_stat_fp("average string length",
440 		    (float)g_stats.cs_strsz / (float)g_stats.cs_nstrings);
441 	ctfdump_printf(CTFDUMP_STATS, "\n");
442 }
443 
444 static void
445 ctfdump_intenc_name(ctf_encoding_t *cte, char *buf, int len)
446 {
447 	int off = 0;
448 	boolean_t space = B_FALSE;
449 
450 	if (cte->cte_format == 0 || (cte->cte_format &
451 	    ~(CTF_INT_SIGNED | CTF_INT_CHAR | CTF_INT_BOOL |
452 	    CTF_INT_VARARGS)) != 0) {
453 		(void) snprintf(buf, len, "0x%x", cte->cte_format);
454 		return;
455 	}
456 
457 	if (cte->cte_format & CTF_INT_SIGNED) {
458 		off += snprintf(buf + off, MAX(len - off, 0), "%sSIGNED",
459 		    space == B_TRUE ? " " : "");
460 		space = B_TRUE;
461 	}
462 
463 	if (cte->cte_format & CTF_INT_CHAR) {
464 		off += snprintf(buf + off, MAX(len - off, 0), "%sCHAR",
465 		    space == B_TRUE ? " " : "");
466 		space = B_TRUE;
467 	}
468 
469 	if (cte->cte_format & CTF_INT_BOOL) {
470 		off += snprintf(buf + off, MAX(len - off, 0), "%sBOOL",
471 		    space == B_TRUE ? " " : "");
472 		space = B_TRUE;
473 	}
474 
475 	if (cte->cte_format & CTF_INT_VARARGS) {
476 		off += snprintf(buf + off, MAX(len - off, 0), "%sVARARGS",
477 		    space == B_TRUE ? " " : "");
478 		space = B_TRUE;
479 	}
480 }
481 
482 static int
483 ctfdump_member_cb(const char *member, ctf_id_t type, ulong_t off, void *arg)
484 {
485 	int *count = arg;
486 	ctfdump_printf(CTFDUMP_TYPES, "\t%s type=%ld off=%lu\n", member, type,
487 	    off);
488 	*count = *count + 1;
489 	return (0);
490 }
491 
492 static int
493 ctfdump_enum_cb(const char *name, int value, void *arg)
494 {
495 	int *count = arg;
496 	ctfdump_printf(CTFDUMP_TYPES, "\t%s = %d\n", name, value);
497 	*count = *count + 1;
498 	return (0);
499 }
500 
501 static int
502 ctfdump_types_cb(ctf_id_t id, boolean_t root, void *arg)
503 {
504 	_NOTE(ARGUNUSED(arg));
505 	int kind, i, count;
506 	ctf_id_t ref;
507 	char name[MAX_NAMELEN], ienc[128];
508 	const char *encn;
509 	ctf_funcinfo_t ctc;
510 	ctf_arinfo_t ar;
511 	ctf_encoding_t cte;
512 	ssize_t size;
513 
514 	if ((kind = ctf_type_kind(g_fp, id)) == CTF_ERR)
515 		ctfdump_fatal("encountered malformed ctf, type %s does not "
516 		    "have a kind: %s\n", name, ctf_errmsg(ctf_errno(g_fp)));
517 
518 	if (ctf_type_name(g_fp, id, name, sizeof (name)) == NULL) {
519 		if (ctf_errno(g_fp) != ECTF_NOPARENT)
520 			ctfdump_fatal("type %ld missing name: %s\n", id,
521 			    ctf_errmsg(ctf_errno(g_fp)));
522 		(void) snprintf(name, sizeof (name), "(unknown %s)",
523 		    ctf_kind_name(g_fp, kind));
524 	}
525 
526 	g_stats.cs_ntypes[kind]++;
527 	if (root == B_TRUE)
528 		ctfdump_printf(CTFDUMP_TYPES, "  <%ld> ", id);
529 	else
530 		ctfdump_printf(CTFDUMP_TYPES, "  [%ld] ", id);
531 
532 	switch (kind) {
533 	case CTF_K_UNKNOWN:
534 		break;
535 	case CTF_K_INTEGER:
536 		if (ctf_type_encoding(g_fp, id, &cte) == CTF_ERR)
537 			ctfdump_fatal("failed to get encoding information "
538 			    "for %s: %s\n", name, ctf_errmsg(ctf_errno(g_fp)));
539 		ctfdump_intenc_name(&cte, ienc, sizeof (ienc));
540 		ctfdump_printf(CTFDUMP_TYPES,
541 		    "%s encoding=%s offset=%u bits=%u",
542 		    name, ienc, cte.cte_offset, cte.cte_bits);
543 		break;
544 	case CTF_K_FLOAT:
545 		if (ctf_type_encoding(g_fp, id, &cte) == CTF_ERR)
546 			ctfdump_fatal("failed to get encoding information "
547 			    "for %s: %s\n", name, ctf_errmsg(ctf_errno(g_fp)));
548 		if (cte.cte_format < 1 || cte.cte_format > 12)
549 			encn = "unknown";
550 		else
551 			encn = ctfdump_fpenc[cte.cte_format];
552 		ctfdump_printf(CTFDUMP_TYPES, "%s encoding=%s offset=%u "
553 		    "bits=%u", name, encn, cte.cte_offset, cte.cte_bits);
554 		break;
555 	case CTF_K_POINTER:
556 		if ((ref = ctf_type_reference(g_fp, id)) == CTF_ERR)
557 			ctfdump_fatal("failed to get reference type for %s: "
558 			    "%s\n", name, ctf_errmsg(ctf_errno(g_fp)));
559 		ctfdump_printf(CTFDUMP_TYPES, "%s refers to %ld", name,
560 		    ref);
561 		break;
562 	case CTF_K_ARRAY:
563 		if (ctf_array_info(g_fp, id, &ar) == CTF_ERR)
564 			ctfdump_fatal("failed to get array information for "
565 			    "%s: %s\n", name, ctf_errmsg(ctf_errno(g_fp)));
566 		ctfdump_printf(CTFDUMP_TYPES, "%s contents: %ld, index: %ld",
567 		    name, ar.ctr_contents, ar.ctr_index);
568 		break;
569 	case CTF_K_FUNCTION:
570 		if (ctf_func_info_by_id(g_fp, id, &ctc) == CTF_ERR)
571 			ctfdump_fatal("failed to get function info for %s: "
572 			    "%s\n", name, ctf_errmsg(ctf_errno(g_fp)));
573 		if (ctc.ctc_argc > 0) {
574 			ctfdump_fargs_grow(ctc.ctc_argc);
575 			if (ctf_func_args_by_id(g_fp, id, g_nfargc, g_fargc) ==
576 			    CTF_ERR)
577 				ctfdump_fatal("failed to get function "
578 				    "arguments for %s: %s\n", name,
579 				    ctf_errmsg(ctf_errno(g_fp)));
580 		}
581 		ctfdump_printf(CTFDUMP_TYPES,
582 		    "%s returns: %ld args: (", name, ctc.ctc_return);
583 		for (i = 0; i < ctc.ctc_argc; i++) {
584 			ctfdump_printf(CTFDUMP_TYPES, "%ld%s", g_fargc[i],
585 			    i + 1 == ctc.ctc_argc ? "" : ", ");
586 		}
587 		if (ctc.ctc_flags & CTF_FUNC_VARARG)
588 			ctfdump_printf(CTFDUMP_TYPES, "%s...",
589 			    ctc.ctc_argc == 0 ? "" : ", ");
590 		ctfdump_printf(CTFDUMP_TYPES, ")");
591 		break;
592 	case CTF_K_STRUCT:
593 	case CTF_K_UNION:
594 		size = ctf_type_size(g_fp, id);
595 		if (size == CTF_ERR)
596 			ctfdump_fatal("failed to get size of %s: %s\n", name,
597 			    ctf_errmsg(ctf_errno(g_fp)));
598 		ctfdump_printf(CTFDUMP_TYPES, "%s (%zd bytes)\n", name, size);
599 		count = 0;
600 		if (ctf_member_iter(g_fp, id, ctfdump_member_cb, &count) != 0)
601 			ctfdump_fatal("failed to iterate members of %s: %s\n",
602 			    name, ctf_errmsg(ctf_errno(g_fp)));
603 		if (kind == CTF_K_STRUCT) {
604 			g_stats.cs_nsmembs += count;
605 			g_stats.cs_nsmax = MAX(count, g_stats.cs_nsmax);
606 			g_stats.cs_structsz += size;
607 			g_stats.cs_sszmax = MAX(size, g_stats.cs_sszmax);
608 		} else {
609 			g_stats.cs_numembs += count;
610 			g_stats.cs_numax = MAX(count, g_stats.cs_numax);
611 			g_stats.cs_unionsz += size;
612 			g_stats.cs_uszmax = MAX(count, g_stats.cs_uszmax);
613 		}
614 		break;
615 	case CTF_K_ENUM:
616 		ctfdump_printf(CTFDUMP_TYPES, "%s\n", name);
617 		count = 0;
618 		if (ctf_enum_iter(g_fp, id, ctfdump_enum_cb, &count) != 0)
619 			ctfdump_fatal("failed to iterate enumerators of %s: "
620 			    "%s\n", name, ctf_errmsg(ctf_errno(g_fp)));
621 		g_stats.cs_nemembs += count;
622 		g_stats.cs_nemax = MAX(g_stats.cs_nemax, count);
623 		break;
624 	case CTF_K_FORWARD:
625 		ctfdump_printf(CTFDUMP_TYPES, "forward %s\n", name);
626 		break;
627 	case CTF_K_TYPEDEF:
628 		if ((ref = ctf_type_reference(g_fp, id)) == CTF_ERR)
629 			ctfdump_fatal("failed to get reference type for %s: "
630 			    "%s\n", name, ctf_errmsg(ctf_errno(g_fp)));
631 		ctfdump_printf(CTFDUMP_TYPES, "typedef %s refers to %ld", name,
632 		    ref);
633 		break;
634 	case CTF_K_VOLATILE:
635 		if ((ref = ctf_type_reference(g_fp, id)) == CTF_ERR)
636 			ctfdump_fatal("failed to get reference type for %s: "
637 			    "%s\n", name, ctf_errmsg(ctf_errno(g_fp)));
638 		ctfdump_printf(CTFDUMP_TYPES, "%s refers to %ld", name,
639 		    ref);
640 		break;
641 	case CTF_K_CONST:
642 		if ((ref = ctf_type_reference(g_fp, id)) == CTF_ERR)
643 			ctfdump_fatal("failed to get reference type for %s: "
644 			    "%s\n", name, ctf_errmsg(ctf_errno(g_fp)));
645 		ctfdump_printf(CTFDUMP_TYPES, "%s refers to %ld", name,
646 		    ref);
647 		break;
648 	case CTF_K_RESTRICT:
649 		if ((ref = ctf_type_reference(g_fp, id)) == CTF_ERR)
650 			ctfdump_fatal("failed to get reference type for %s: "
651 			    "%s\n", name, ctf_errmsg(ctf_errno(g_fp)));
652 		ctfdump_printf(CTFDUMP_TYPES, "%s refers to %ld", name,
653 		    ref);
654 		break;
655 	default:
656 		ctfdump_fatal("encountered unknown kind for type %s: %d\n",
657 		    name, kind);
658 	}
659 
660 	ctfdump_printf(CTFDUMP_TYPES, "\n");
661 
662 	return (0);
663 }
664 
665 static void
666 ctfdump_types(void)
667 {
668 	ctfdump_title(CTFDUMP_TYPES, "Types");
669 
670 	if (ctf_type_iter(g_fp, B_TRUE, ctfdump_types_cb, NULL) == CTF_ERR) {
671 		warnx("failed to dump types: %s",
672 		    ctf_errmsg(ctf_errno(g_fp)));
673 		g_exit = 1;
674 	}
675 }
676 
677 /*
678  * C-style output. This is designed mainly for comparison purposes, and doesn't
679  * produce directly valid C:
680  *
681  * - the declarations are sorted alphabetically not semantically
682  * - anonymous enums without other users are elided (e.g. IDCS_PROBE_SENT)
683  * - doubly-pointed-to functions are wrong (e.g. in kiconv_ops_t)
684  * - anon unions declared within SOUs aren't expanded
685  * - function arguments aren't expanded recursively
686  */
687 
688 static const char *
689 ctfsrc_refname(ctf_id_t id, char *buf, size_t bufsize)
690 {
691 	ctf_id_t ref;
692 
693 	if ((ref = ctf_type_reference(g_fp, id)) == CTF_ERR) {
694 		ctfdump_fatal("failed to get reference type for %ld: "
695 		    "%s\n", id, ctf_errmsg(ctf_errno(g_fp)));
696 	}
697 
698 	return (ctf_type_name(g_fp, ref, buf, bufsize));
699 }
700 
701 static int
702 ctfsrc_member_cb(const char *member, ctf_id_t type, ulong_t off, void *arg)
703 {
704 	_NOTE(ARGUNUSED(arg));
705 	char name[MAX_NAMELEN];
706 
707 	if (ctf_type_cname(g_fp, type, name, sizeof (name), member) == NULL) {
708 		if (ctf_errno(g_fp) != ECTF_NOPARENT) {
709 			ctfdump_fatal("type %ld missing name: %s\n", type,
710 			    ctf_errmsg(ctf_errno(g_fp)));
711 		}
712 
713 		(void) snprintf(name, sizeof (name), "unknown_t %s", member);
714 	}
715 
716 	/*
717 	 * A byte offset is friendlier, but we'll print bits too if it's not
718 	 * aligned (i.e. a bitfield).
719 	 */
720 	if (off % NBBY != 0) {
721 		printf("\t%s; /* offset: %lu bytes (%lu bits) */\n",
722 		    name, off / NBBY, off);
723 	} else {
724 		printf("\t%s; /* offset: %lu bytes */\n",
725 		    name, off / NBBY);
726 	}
727 	return (0);
728 }
729 
730 static int
731 ctfsrc_enum_cb(const char *name, int value, void *arg)
732 {
733 	_NOTE(ARGUNUSED(arg));
734 	printf("\t%s = %d,\n", name, value);
735 	return (0);
736 }
737 
738 static int
739 is_anon_refname(const char *refname)
740 {
741 	return ((strcmp(refname, "struct ") == 0 ||
742 	    strcmp(refname, "union ") == 0 ||
743 	    strcmp(refname, "enum ") == 0));
744 }
745 
746 static int
747 ctfsrc_collect_types_cb(ctf_id_t id, boolean_t root, void *arg)
748 {
749 	_NOTE(ARGUNUSED(root, arg));
750 	(void) ctf_type_name(g_fp, id, idnames[id].ci_name,
751 	    sizeof (idnames[id].ci_name));
752 	idnames[id].ci_id = id;
753 	return (0);
754 }
755 
756 static void
757 ctfsrc_type(ctf_id_t id, const char *name)
758 {
759 	char refname[MAX_NAMELEN] = "unknown_t";
760 	ctf_id_t ref;
761 	ssize_t size;
762 	int kind;
763 
764 	if ((kind = ctf_type_kind(g_fp, id)) == CTF_ERR) {
765 		ctfdump_fatal("encountered malformed ctf, type %s does not "
766 		    "have a kind: %s\n", name, ctf_errmsg(ctf_errno(g_fp)));
767 	}
768 
769 	switch (kind) {
770 	case CTF_K_STRUCT:
771 	case CTF_K_UNION:
772 		/*
773 		 * Delay printing anonymous SOUs; a later typedef will usually
774 		 * pick them up.
775 		 */
776 		if (is_anon_refname(name))
777 			break;
778 
779 		if ((size = ctf_type_size(g_fp, id)) == CTF_ERR) {
780 			ctfdump_fatal("failed to get size of %s: %s\n", name,
781 			    ctf_errmsg(ctf_errno(g_fp)));
782 		}
783 
784 		printf("%s { /* 0x%x bytes */\n", name, size);
785 
786 		if (ctf_member_iter(g_fp, id, ctfsrc_member_cb, NULL) != 0) {
787 			ctfdump_fatal("failed to iterate members of %s: %s\n",
788 			    name, ctf_errmsg(ctf_errno(g_fp)));
789 		}
790 
791 		printf("};\n\n");
792 		break;
793 	case CTF_K_ENUM:
794 		/*
795 		 * This will throw away any anon enum that isn't followed by a
796 		 * typedef...
797 		 */
798 		if (is_anon_refname(name))
799 			break;
800 
801 		printf("%s {\n", name);
802 
803 		if (ctf_enum_iter(g_fp, id, ctfsrc_enum_cb, NULL) != 0) {
804 			ctfdump_fatal("failed to iterate enumerators of %s: "
805 			    "%s\n", name, ctf_errmsg(ctf_errno(g_fp)));
806 		}
807 
808 		printf("};\n\n");
809 		break;
810 	case CTF_K_TYPEDEF:
811 		/*
812 		 * If this fails, it's probably because the referent type is in
813 		 * a parent container that was not supplied via -p.
814 		 */
815 		if (ctfsrc_refname(id, refname, sizeof (refname)) == NULL) {
816 			printf("typedef %s %s;\n\n", refname, name);
817 			break;
818 		}
819 
820 		if (!is_anon_refname(refname)) {
821 			(void) ctf_type_cname(g_fp,
822 			    ctf_type_reference(g_fp, id), refname,
823 			    sizeof (refname), name);
824 
825 			printf("typedef %s;\n\n", refname);
826 			break;
827 		}
828 
829 		ref = ctf_type_reference(g_fp, id);
830 
831 		if (ctf_type_kind(g_fp, ref) == CTF_K_ENUM) {
832 			printf("typedef enum {\n");
833 
834 			if (ctf_enum_iter(g_fp, ref,
835 			    ctfsrc_enum_cb, NULL) != 0) {
836 				ctfdump_fatal("failed to iterate enumerators "
837 				    "of %s: %s\n", refname,
838 				    ctf_errmsg(ctf_errno(g_fp)));
839 			}
840 
841 			printf("} %s;\n\n", name);
842 		} else {
843 			if ((size = ctf_type_size(g_fp, ref)) == CTF_ERR) {
844 				ctfdump_fatal("failed to get size of %s: %s\n",
845 				    refname, ctf_errmsg(ctf_errno(g_fp)));
846 			}
847 
848 			printf("typedef %s{ /* 0x%zx bytes */\n",
849 			    refname, size);
850 
851 			if (ctf_member_iter(g_fp, ref,
852 			    ctfsrc_member_cb, NULL) != 0) {
853 				ctfdump_fatal("failed to iterate members "
854 				    "of %s: %s\n", refname,
855 				    ctf_errmsg(ctf_errno(g_fp)));
856 			}
857 
858 			printf("} %s;\n\n", name);
859 		}
860 
861 		break;
862 	case CTF_K_FORWARD:
863 		printf("%s;\n\n", name);
864 		break;
865 	case CTF_K_UNKNOWN:
866 	case CTF_K_INTEGER:
867 	case CTF_K_FLOAT:
868 	case CTF_K_POINTER:
869 	case CTF_K_ARRAY:
870 	case CTF_K_FUNCTION:
871 	case CTF_K_VOLATILE:
872 	case CTF_K_CONST:
873 	case CTF_K_RESTRICT:
874 		break;
875 	default:
876 		ctfdump_fatal("encountered unknown kind for type %s: %d\n",
877 		    name, kind);
878 		break;
879 	}
880 }
881 
882 static int
883 ctfsrc_collect_objects_cb(const char *name, ctf_id_t id,
884     ulong_t symidx, void *arg)
885 {
886 	size_t *count = arg;
887 
888 	/* local static vars can have an unknown ID */
889 	if (id == 0)
890 		return (0);
891 
892 	(void) strlcpy(idnames[*count].ci_name, name,
893 	    sizeof (idnames[*count].ci_name));
894 	idnames[*count].ci_id = id;
895 	idnames[*count].ci_symidx = symidx;
896 	*count = *count + 1;
897 	return (0);
898 }
899 
900 static void
901 ctfsrc_object(ctf_id_t id, const char *name)
902 {
903 	char tname[MAX_NAMELEN];
904 
905 	if (ctf_type_cname(g_fp, id, tname, sizeof (tname), name) == NULL) {
906 		if (ctf_errno(g_fp) != ECTF_NOPARENT) {
907 			ctfdump_fatal("type %ld missing name: %s\n", id,
908 			    ctf_errmsg(ctf_errno(g_fp)));
909 		}
910 		(void) snprintf(tname, sizeof (tname), "unknown_t %s", name);
911 	}
912 
913 	printf("extern %s;\n", tname);
914 }
915 
916 static int
917 ctfsrc_collect_functions_cb(const char *name, ulong_t symidx,
918     ctf_funcinfo_t *ctc, void *arg)
919 {
920 	size_t *count = arg;
921 
922 	(void) strlcpy(idnames[*count].ci_name, name,
923 	    sizeof (idnames[*count].ci_name));
924 	bcopy(ctc, &idnames[*count].ci_funcinfo, sizeof (*ctc));
925 	idnames[*count].ci_id = 0;
926 	idnames[*count].ci_symidx = symidx;
927 	*count = *count + 1;
928 	return (0);
929 }
930 
931 static void
932 ctfsrc_function(ctf_idname_t *idn)
933 {
934 	ctf_funcinfo_t *cfi = &idn->ci_funcinfo;
935 	char name[MAX_NAMELEN] = "unknown_t";
936 
937 	(void) ctf_type_name(g_fp, cfi->ctc_return, name, sizeof (name));
938 
939 	printf("extern %s %s(", name, idn->ci_name);
940 
941 	if (cfi->ctc_argc != 0) {
942 		ctfdump_fargs_grow(cfi->ctc_argc);
943 		if (ctf_func_args(g_fp, idn->ci_symidx,
944 		    g_nfargc, g_fargc) == CTF_ERR) {
945 			ctfdump_fatal("failed to get arguments for function "
946 			    "%s: %s\n", idn->ci_name,
947 			    ctf_errmsg(ctf_errno(g_fp)));
948 		}
949 
950 		for (size_t i = 0; i < cfi->ctc_argc; i++) {
951 			ctf_id_t aid = g_fargc[i];
952 
953 			(void) strlcpy(name, "unknown_t", sizeof (name));
954 
955 			(void) ctf_type_name(g_fp, aid, name, sizeof (name));
956 
957 			printf("%s%s", name,
958 			    i + 1 == cfi->ctc_argc ? "" : ", ");
959 		}
960 	} else {
961 		if (!(cfi->ctc_flags & CTF_FUNC_VARARG))
962 			printf("void");
963 	}
964 
965 	if (cfi->ctc_flags & CTF_FUNC_VARARG)
966 		printf("%s...", cfi->ctc_argc == 0 ? "" : ", ");
967 
968 	printf(");\n");
969 }
970 
971 static int
972 idname_compare(const void *lhs, const void *rhs)
973 {
974 	return (strcmp(((ctf_idname_t *)lhs)->ci_name,
975 	    ((ctf_idname_t *)rhs)->ci_name));
976 }
977 
978 static void
979 ctfdump_source(void)
980 {
981 	ulong_t nr_syms = ctf_nr_syms(g_fp);
982 	ctf_id_t max_id = ctf_max_id(g_fp);
983 	size_t count = 0;
984 
985 	printf("/* Types */\n\n");
986 
987 	if ((idnames = calloc(max_id + 1, sizeof (idnames[0]))) == NULL) {
988 		ctfdump_fatal("failed to alloc idnames: %s\n",
989 		    strerror(errno));
990 	}
991 
992 	/*
993 	 * Prep for any unknown types (most likely, they exist in the parent,
994 	 * but we weren't given the -p option).
995 	 */
996 	for (size_t i = 0; i <= max_id; i++) {
997 		(void) strlcpy(idnames[i].ci_name, "unknown_t",
998 		    sizeof (idnames[i].ci_name));
999 	}
1000 
1001 	if (ctf_type_iter(g_fp, B_TRUE, ctfsrc_collect_types_cb,
1002 	    idnames) == CTF_ERR) {
1003 		warnx("failed to collect types: %s",
1004 		    ctf_errmsg(ctf_errno(g_fp)));
1005 		g_exit = 1;
1006 	}
1007 
1008 	qsort(idnames, max_id, sizeof (ctf_idname_t), idname_compare);
1009 
1010 	for (size_t i = 0; i <= max_id; i++) {
1011 		if (idnames[i].ci_id != 0)
1012 			ctfsrc_type(idnames[i].ci_id, idnames[i].ci_name);
1013 	}
1014 
1015 	free(idnames);
1016 
1017 	printf("\n\n/* Data Objects */\n\n");
1018 
1019 	if ((idnames = calloc(nr_syms, sizeof (idnames[0]))) == NULL) {
1020 		ctfdump_fatal("failed to alloc idnames: %s\n",
1021 		    strerror(errno));
1022 	}
1023 
1024 	if (ctf_object_iter(g_fp, ctfsrc_collect_objects_cb,
1025 	    &count) == CTF_ERR) {
1026 		warnx("failed to collect objects: %s",
1027 		    ctf_errmsg(ctf_errno(g_fp)));
1028 		g_exit = 1;
1029 	}
1030 
1031 	qsort(idnames, count, sizeof (ctf_idname_t), idname_compare);
1032 
1033 	for (size_t i = 0; i < count; i++)
1034 		ctfsrc_object(idnames[i].ci_id, idnames[i].ci_name);
1035 
1036 	free(idnames);
1037 
1038 	printf("\n\n/* Functions */\n\n");
1039 
1040 	if ((idnames = calloc(nr_syms, sizeof (idnames[0]))) == NULL) {
1041 		ctfdump_fatal("failed to alloc idnames: %s\n",
1042 		    strerror(errno));
1043 	}
1044 
1045 	count = 0;
1046 
1047 	if (ctf_function_iter(g_fp, ctfsrc_collect_functions_cb,
1048 	    &count) == CTF_ERR) {
1049 		warnx("failed to collect functions: %s",
1050 		    ctf_errmsg(ctf_errno(g_fp)));
1051 		g_exit = 1;
1052 	}
1053 
1054 	qsort(idnames, count, sizeof (ctf_idname_t), idname_compare);
1055 
1056 	for (size_t i = 0; i < count; i++)
1057 		ctfsrc_function(&idnames[i]);
1058 
1059 	free(idnames);
1060 }
1061 
1062 static void
1063 ctfdump_output(const char *out)
1064 {
1065 	int fd, ret;
1066 	const void *data;
1067 	size_t len;
1068 
1069 	ctf_dataptr(g_fp, &data, &len);
1070 	if ((fd = open(out, O_WRONLY | O_CREAT | O_TRUNC, 0666)) < 0)
1071 		ctfdump_fatal("failed to open output file %s: %s\n", out,
1072 		    strerror(errno));
1073 
1074 	while (len > 0) {
1075 		ret = write(fd, data, len);
1076 		if (ret == -1 && errno == EINTR)
1077 			continue;
1078 		else if (ret == -1 && (errno == EFAULT || errno == EBADF))
1079 			abort();
1080 		else if (ret == -1)
1081 			ctfdump_fatal("failed to write to %s: %s\n", out,
1082 			    strerror(errno));
1083 		data = ((char *)data) + ret;
1084 		len -= ret;
1085 	}
1086 
1087 	do {
1088 		ret = close(fd);
1089 	} while (ret == -1 && errno == EINTR);
1090 	if (ret != 0 && errno == EBADF)
1091 		abort();
1092 	if (ret != 0)
1093 		ctfdump_fatal("failed to close %s: %s\n", out, strerror(errno));
1094 }
1095 
1096 int
1097 main(int argc, char *argv[])
1098 {
1099 	int c, fd, err;
1100 	const char *ufile = NULL, *parent = NULL;
1101 
1102 	g_progname = basename(argv[0]);
1103 	while ((c = getopt(argc, argv, ":cdfhlp:sStu:")) != -1) {
1104 		switch (c) {
1105 		case 'c':
1106 			g_dump |= CTFDUMP_SOURCE;
1107 			break;
1108 		case 'd':
1109 			g_dump |= CTFDUMP_OBJECTS;
1110 			break;
1111 		case 'f':
1112 			g_dump |= CTFDUMP_FUNCTIONS;
1113 			break;
1114 		case 'h':
1115 			g_dump |= CTFDUMP_HEADER;
1116 			break;
1117 		case 'l':
1118 			g_dump |= CTFDUMP_LABELS;
1119 			break;
1120 		case 'p':
1121 			parent = optarg;
1122 			break;
1123 		case 's':
1124 			g_dump |= CTFDUMP_STRINGS;
1125 			break;
1126 		case 'S':
1127 			g_dump |= CTFDUMP_STATS;
1128 			break;
1129 		case 't':
1130 			g_dump |= CTFDUMP_TYPES;
1131 			break;
1132 		case 'u':
1133 			g_dump |= CTFDUMP_OUTPUT;
1134 			ufile = optarg;
1135 			break;
1136 		case '?':
1137 			ctfdump_usage("Unknown option: -%c\n", optopt);
1138 			return (2);
1139 		case ':':
1140 			ctfdump_usage("Option -%c requires an operand\n",
1141 			    optopt);
1142 			return (2);
1143 		}
1144 	}
1145 
1146 	argc -= optind;
1147 	argv += optind;
1148 
1149 	if ((g_dump & CTFDUMP_SOURCE) && !!(g_dump & ~CTFDUMP_SOURCE)) {
1150 		ctfdump_usage("-c must be specified on its own\n");
1151 		return (2);
1152 	}
1153 
1154 	/*
1155 	 * Dump all information except C source by default.
1156 	 */
1157 	if (g_dump == 0)
1158 		g_dump = CTFDUMP_DEFAULT;
1159 
1160 	if (argc != 1) {
1161 		ctfdump_usage("no file to dump\n");
1162 		return (2);
1163 	}
1164 
1165 	if ((fd = open(argv[0], O_RDONLY)) < 0)
1166 		ctfdump_fatal("failed to open file %s: %s\n", argv[0],
1167 		    strerror(errno));
1168 
1169 	g_fp = ctf_fdopen(fd, &err);
1170 	if (g_fp == NULL)
1171 		ctfdump_fatal("failed to open file %s: %s\n", argv[0],
1172 		    ctf_errmsg(err));
1173 
1174 	/*
1175 	 * Check to see if this file needs a parent. If it does not and we were
1176 	 * given one, that should be an error. If it does need one and the
1177 	 * parent is not specified, that is fine, we just won't know how to
1178 	 * find child types. If we are given a parent, check at least that the
1179 	 * labels match.
1180 	 */
1181 	if (ctf_parent_name(g_fp) == NULL) {
1182 		if (parent != NULL)
1183 			ctfdump_fatal("cannot use %s as a parent file, %s is "
1184 			    "not a child\n", parent, argv[0]);
1185 	} else if (parent != NULL) {
1186 		const char *explabel, *label;
1187 		ctf_file_t *pfp = ctf_open(parent, &err);
1188 
1189 		if (pfp == NULL)
1190 			ctfdump_fatal("failed to open parent file %s: %s\n",
1191 			    parent, ctf_errmsg(err));
1192 
1193 		/*
1194 		 * Before we import the parent into the child, check that the
1195 		 * labels match. While there is also the notion of the parent
1196 		 * name, it's less straightforward to match that. Require that
1197 		 * labels match.
1198 		 */
1199 		explabel = ctf_parent_label(g_fp);
1200 		label = ctf_label_topmost(pfp);
1201 		if (explabel == NULL || label == NULL ||
1202 		    strcmp(explabel, label) != 0) {
1203 			if (label == NULL)
1204 				label = "<missing>";
1205 			if (explabel == NULL)
1206 				explabel = "<missing>";
1207 			ctfdump_fatal("label mismatch between parent %s and "
1208 			    "child %s, parent has %s, child expects %s\n",
1209 			    parent, argv[0], label, explabel);
1210 		}
1211 
1212 		if (ctf_import(g_fp, pfp) != 0)
1213 			ctfdump_fatal("failed to import parent %s: %s\n",
1214 			    parent, ctf_errmsg(ctf_errno(g_fp)));
1215 	} else {
1216 		if (g_dump & CTFDUMP_SOURCE) {
1217 			printf("/* Warning: parent \"%s\" not supplied: many "
1218 			    "types will be unknown. */\n\n",
1219 			    ctf_parent_name(g_fp));
1220 		} else {
1221 			fprintf(stderr, "warning: parent \"%s\" not supplied: "
1222 			    "many types will be unknown\n\n",
1223 			    ctf_parent_name(g_fp));
1224 		}
1225 	}
1226 
1227 	if (g_dump & CTFDUMP_SOURCE) {
1228 		ctfdump_source();
1229 		return (0);
1230 	}
1231 
1232 	/*
1233 	 * If stats is set, we must run through everything exect CTFDUMP_OUTPUT.
1234 	 * We also do CTFDUMP_STATS last as a result.
1235 	 */
1236 	if (g_dump & CTFDUMP_HEADER)
1237 		ctfdump_header();
1238 
1239 	if (g_dump & (CTFDUMP_LABELS | CTFDUMP_STATS))
1240 		ctfdump_labels();
1241 
1242 	if (g_dump & (CTFDUMP_OBJECTS | CTFDUMP_STATS))
1243 		ctfdump_objects();
1244 
1245 	if (g_dump & (CTFDUMP_FUNCTIONS | CTFDUMP_STATS))
1246 		ctfdump_functions();
1247 
1248 	if (g_dump & (CTFDUMP_TYPES | CTFDUMP_STATS))
1249 		ctfdump_types();
1250 
1251 	if (g_dump & (CTFDUMP_STRINGS | CTFDUMP_STATS))
1252 		ctfdump_strings();
1253 
1254 	if (g_dump & CTFDUMP_STATS)
1255 		ctfdump_stats();
1256 
1257 	if (g_dump & CTFDUMP_OUTPUT)
1258 		ctfdump_output(ufile);
1259 
1260 	return (g_exit);
1261 }
1262