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 2007 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 /*
28  * Copyright (c) 2014, 2016 by Delphix. All rights reserved.
29  * Copyright (c) 2013, Joyent, Inc. All rights reserved.
30  */
31 
32 #ifndef	_DTRACE_H
33 #define	_DTRACE_H
34 
35 #include <sys/dtrace.h>
36 #include <stdarg.h>
37 #include <stdio.h>
38 #include <gelf.h>
39 
40 #ifdef	__cplusplus
41 extern "C" {
42 #endif
43 
44 /*
45  * DTrace Dynamic Tracing Software: Library Interfaces
46  *
47  * Note: The contents of this file are private to the implementation of the
48  * Solaris system and DTrace subsystem and are subject to change at any time
49  * without notice.  Applications and drivers using these interfaces will fail
50  * to run on future releases.  These interfaces should not be used for any
51  * purpose except those expressly outlined in dtrace(4D) and libdtrace(3LIB).
52  * Please refer to the "Solaris Dynamic Tracing Guide" for more information.
53  */
54 
55 #define	DTRACE_VERSION	3		/* library ABI interface version */
56 
57 struct ps_prochandle;
58 struct dt_node;
59 typedef struct dtrace_hdl dtrace_hdl_t;
60 typedef struct dtrace_prog dtrace_prog_t;
61 typedef struct dtrace_vector dtrace_vector_t;
62 typedef struct dtrace_aggdata dtrace_aggdata_t;
63 
64 #define	DTRACE_O_NODEV		0x01	/* do not open dtrace(4D) device */
65 #define	DTRACE_O_NOSYS		0x02	/* do not load /system/object modules */
66 #define	DTRACE_O_LP64		0x04	/* force D compiler to be LP64 */
67 #define	DTRACE_O_ILP32		0x08	/* force D compiler to be ILP32 */
68 #define	DTRACE_O_MASK		0x0f	/* mask of valid flags to dtrace_open */
69 
70 extern dtrace_hdl_t *dtrace_open(int, int, int *);
71 extern dtrace_hdl_t *dtrace_vopen(int, int, int *,
72     const dtrace_vector_t *, void *);
73 
74 extern int dtrace_go(dtrace_hdl_t *);
75 extern int dtrace_stop(dtrace_hdl_t *);
76 extern void dtrace_sleep(dtrace_hdl_t *);
77 extern void dtrace_close(dtrace_hdl_t *);
78 
79 extern int dtrace_errno(dtrace_hdl_t *);
80 extern const char *dtrace_errmsg(dtrace_hdl_t *, int);
81 extern const char *dtrace_faultstr(dtrace_hdl_t *, int);
82 extern const char *dtrace_subrstr(dtrace_hdl_t *, int);
83 
84 extern int dtrace_setopt(dtrace_hdl_t *, const char *, const char *);
85 extern int dtrace_getopt(dtrace_hdl_t *, const char *, dtrace_optval_t *);
86 
87 extern void dtrace_update(dtrace_hdl_t *);
88 extern int dtrace_ctlfd(dtrace_hdl_t *);
89 
90 /*
91  * DTrace Program Interface
92  *
93  * DTrace programs can be created by compiling ASCII text files containing
94  * D programs or by compiling in-memory C strings that specify a D program.
95  * Once created, callers can examine the list of program statements and
96  * enable the probes and actions described by these statements.
97  */
98 
99 typedef struct dtrace_proginfo {
100 	dtrace_attribute_t dpi_descattr; /* minimum probedesc attributes */
101 	dtrace_attribute_t dpi_stmtattr; /* minimum statement attributes */
102 	uint_t dpi_aggregates;	/* number of aggregates specified in program */
103 	uint_t dpi_recgens;	/* number of record generating probes in prog */
104 	uint_t dpi_matches;	/* number of probes matched by program */
105 	uint_t dpi_speculations; /* number of speculations specified in prog */
106 } dtrace_proginfo_t;
107 
108 #define	DTRACE_C_DIFV	0x0001	/* DIF verbose mode: show each compiled DIFO */
109 #define	DTRACE_C_EMPTY	0x0002	/* Permit compilation of empty D source files */
110 #define	DTRACE_C_ZDEFS	0x0004	/* Permit probe defs that match zero probes */
111 #define	DTRACE_C_EATTR	0x0008	/* Error if program attributes less than min */
112 #define	DTRACE_C_CPP	0x0010	/* Preprocess input file with cpp(1) utility */
113 #define	DTRACE_C_KNODEF	0x0020	/* Permit unresolved kernel symbols in DIFO */
114 #define	DTRACE_C_UNODEF	0x0040	/* Permit unresolved user symbols in DIFO */
115 #define	DTRACE_C_PSPEC	0x0080	/* Interpret ambiguous specifiers as probes */
116 #define	DTRACE_C_ETAGS	0x0100	/* Prefix error messages with error tags */
117 #define	DTRACE_C_ARGREF	0x0200	/* Do not require all macro args to be used */
118 #define	DTRACE_C_DEFARG	0x0800	/* Use 0/"" as value for unspecified args */
119 #define	DTRACE_C_NOLIBS	0x1000	/* Do not process D system libraries */
120 #define	DTRACE_C_CTL	0x2000	/* Only process control directives */
121 #define	DTRACE_C_MASK	0x3bff	/* mask of all valid flags to dtrace_*compile */
122 
123 extern dtrace_prog_t *dtrace_program_strcompile(dtrace_hdl_t *,
124     const char *, dtrace_probespec_t, uint_t, int, char *const []);
125 
126 extern dtrace_prog_t *dtrace_program_fcompile(dtrace_hdl_t *,
127     FILE *, uint_t, int, char *const []);
128 
129 extern int dtrace_program_exec(dtrace_hdl_t *, dtrace_prog_t *,
130     dtrace_proginfo_t *);
131 extern void dtrace_program_info(dtrace_hdl_t *, dtrace_prog_t *,
132     dtrace_proginfo_t *);
133 
134 #define	DTRACE_D_STRIP	0x01	/* strip non-loadable sections from program */
135 #define	DTRACE_D_PROBES	0x02	/* include provider and probe definitions */
136 #define	DTRACE_D_MASK	0x03	/* mask of valid flags to dtrace_dof_create */
137 
138 extern int dtrace_program_link(dtrace_hdl_t *, dtrace_prog_t *,
139     uint_t, const char *, int, char *const []);
140 
141 extern int dtrace_program_header(dtrace_hdl_t *, FILE *, const char *);
142 
143 extern void *dtrace_dof_create(dtrace_hdl_t *, dtrace_prog_t *, uint_t);
144 extern void dtrace_dof_destroy(dtrace_hdl_t *, void *);
145 
146 extern void *dtrace_getopt_dof(dtrace_hdl_t *);
147 extern void *dtrace_geterr_dof(dtrace_hdl_t *);
148 
149 typedef struct dtrace_stmtdesc {
150 	dtrace_ecbdesc_t *dtsd_ecbdesc;		/* ECB description */
151 	dtrace_actdesc_t *dtsd_action;		/* action list */
152 	dtrace_actdesc_t *dtsd_action_last;	/* last action in action list */
153 	void *dtsd_aggdata;			/* aggregation data */
154 	void *dtsd_fmtdata;			/* type-specific output data */
155 	void *dtsd_strdata;			/* type-specific string data */
156 	void (*dtsd_callback)();		/* callback function for EPID */
157 	void *dtsd_data;			/* callback data pointer */
158 	dtrace_attribute_t dtsd_descattr;	/* probedesc attributes */
159 	dtrace_attribute_t dtsd_stmtattr;	/* statement attributes */
160 } dtrace_stmtdesc_t;
161 
162 typedef int dtrace_stmt_f(dtrace_hdl_t *, dtrace_prog_t *,
163     dtrace_stmtdesc_t *, void *);
164 
165 extern dtrace_stmtdesc_t *dtrace_stmt_create(dtrace_hdl_t *,
166     dtrace_ecbdesc_t *);
167 extern dtrace_actdesc_t *dtrace_stmt_action(dtrace_hdl_t *,
168     dtrace_stmtdesc_t *);
169 extern int dtrace_stmt_add(dtrace_hdl_t *, dtrace_prog_t *,
170     dtrace_stmtdesc_t *);
171 extern int dtrace_stmt_iter(dtrace_hdl_t *, dtrace_prog_t *,
172     dtrace_stmt_f *, void *);
173 extern void dtrace_stmt_destroy(dtrace_hdl_t *, dtrace_stmtdesc_t *);
174 
175 /*
176  * DTrace Data Consumption Interface
177  */
178 typedef enum {
179 	DTRACEFLOW_ENTRY,
180 	DTRACEFLOW_RETURN,
181 	DTRACEFLOW_NONE
182 } dtrace_flowkind_t;
183 
184 #define	DTRACE_CONSUME_ERROR		-1	/* error while processing */
185 #define	DTRACE_CONSUME_THIS		0	/* consume this probe/record */
186 #define	DTRACE_CONSUME_NEXT		1	/* advance to next probe/rec */
187 #define	DTRACE_CONSUME_ABORT		2	/* abort consumption */
188 
189 typedef struct dtrace_probedata {
190 	dtrace_hdl_t *dtpda_handle;		/* handle to DTrace library */
191 	dtrace_eprobedesc_t *dtpda_edesc;	/* enabled probe description */
192 	dtrace_probedesc_t *dtpda_pdesc;	/* probe description */
193 	processorid_t dtpda_cpu;		/* CPU for data */
194 	caddr_t dtpda_data;			/* pointer to raw data */
195 	dtrace_flowkind_t dtpda_flow;		/* flow kind */
196 	const char *dtpda_prefix;		/* recommended flow prefix */
197 	int dtpda_indent;			/* recommended flow indent */
198 } dtrace_probedata_t;
199 
200 typedef int dtrace_consume_probe_f(const dtrace_probedata_t *, void *);
201 typedef int dtrace_consume_rec_f(const dtrace_probedata_t *,
202     const dtrace_recdesc_t *, void *);
203 
204 extern int dtrace_consume(dtrace_hdl_t *, FILE *,
205     dtrace_consume_probe_f *, dtrace_consume_rec_f *, void *);
206 
207 #define	DTRACE_STATUS_NONE	0	/* no status; not yet time */
208 #define	DTRACE_STATUS_OKAY	1	/* status okay */
209 #define	DTRACE_STATUS_EXITED	2	/* exit() was called; tracing stopped */
210 #define	DTRACE_STATUS_FILLED	3	/* fill buffer filled; tracing stoped */
211 #define	DTRACE_STATUS_STOPPED	4	/* tracing already stopped */
212 
213 extern int dtrace_status(dtrace_hdl_t *);
214 
215 /*
216  * DTrace Formatted Output Interfaces
217  *
218  * To format output associated with a given dtrace_stmtdesc, the caller can
219  * invoke one of the following functions, passing the opaque dtsd_fmtdata and a
220  * list of record descriptions.  These functions return either -1 to indicate
221  * an error, or a positive integer indicating the number of records consumed.
222  * For anonymous enablings, the consumer can use the dtrd_format member of
223  * the record description to obtain a format description.  The dtfd_string
224  * member of the format description may be passed to dtrace_print{fa}_create()
225  * to create the opaque format data.
226  */
227 extern void *dtrace_printf_create(dtrace_hdl_t *, const char *);
228 extern void *dtrace_printa_create(dtrace_hdl_t *, const char *);
229 extern size_t dtrace_printf_format(dtrace_hdl_t *, void *, char *, size_t);
230 
231 extern int dtrace_fprintf(dtrace_hdl_t *, FILE *, void *,
232     const dtrace_probedata_t *, const dtrace_recdesc_t *, uint_t,
233     const void *, size_t);
234 
235 extern int dtrace_fprinta(dtrace_hdl_t *, FILE *, void *,
236     const dtrace_probedata_t *, const dtrace_recdesc_t *, uint_t,
237     const void *, size_t);
238 
239 extern int dtrace_system(dtrace_hdl_t *, FILE *, void *,
240     const dtrace_probedata_t *, const dtrace_recdesc_t *, uint_t,
241     const void *, size_t);
242 
243 extern int dtrace_freopen(dtrace_hdl_t *, FILE *, void *,
244     const dtrace_probedata_t *, const dtrace_recdesc_t *, uint_t,
245     const void *, size_t);
246 
247 /*
248  * Type-specific output printing
249  *
250  * The print() action will associate a string data record that is actually the
251  * fully-qualified type name of the data traced by the DIFEXPR action.  This is
252  * stored in the same 'format' record from the kernel, but we know by virtue of
253  * the fact that the action is still DIFEXPR that it is actually a reference to
254  * plain string data.
255  */
256 extern int dtrace_print(dtrace_hdl_t *, FILE *, const char *,
257     caddr_t, size_t);
258 
259 /*
260  * DTrace Work Interface
261  */
262 typedef enum {
263 	DTRACE_WORKSTATUS_ERROR = -1,
264 	DTRACE_WORKSTATUS_OKAY,
265 	DTRACE_WORKSTATUS_DONE
266 } dtrace_workstatus_t;
267 
268 extern dtrace_workstatus_t dtrace_work(dtrace_hdl_t *, FILE *,
269     dtrace_consume_probe_f *, dtrace_consume_rec_f *, void *);
270 
271 /*
272  * DTrace Handler Interface
273  */
274 #define	DTRACE_HANDLE_ABORT		-1	/* abort current operation */
275 #define	DTRACE_HANDLE_OK		0	/* handled okay; continue */
276 
277 typedef struct dtrace_errdata {
278 	dtrace_hdl_t *dteda_handle;		/* handle to DTrace library */
279 	dtrace_eprobedesc_t *dteda_edesc;	/* enabled probe inducing err */
280 	dtrace_probedesc_t *dteda_pdesc;	/* probe inducing error */
281 	processorid_t dteda_cpu;		/* CPU of error */
282 	int dteda_action;			/* action inducing error */
283 	int dteda_offset;			/* offset in DIFO of error */
284 	int dteda_fault;			/* specific fault */
285 	uint64_t dteda_addr;			/* address of fault, if any */
286 	const char *dteda_msg;			/* preconstructed message */
287 } dtrace_errdata_t;
288 
289 typedef int dtrace_handle_err_f(const dtrace_errdata_t *, void *);
290 extern int dtrace_handle_err(dtrace_hdl_t *, dtrace_handle_err_f *, void *);
291 
292 typedef enum {
293 	DTRACEDROP_PRINCIPAL,			/* drop to principal buffer */
294 	DTRACEDROP_AGGREGATION,			/* drop to aggregation buffer */
295 	DTRACEDROP_DYNAMIC,			/* dynamic drop */
296 	DTRACEDROP_DYNRINSE,			/* dyn drop due to rinsing */
297 	DTRACEDROP_DYNDIRTY,			/* dyn drop due to dirty */
298 	DTRACEDROP_SPEC,			/* speculative drop */
299 	DTRACEDROP_SPECBUSY,			/* spec drop due to busy */
300 	DTRACEDROP_SPECUNAVAIL,			/* spec drop due to unavail */
301 	DTRACEDROP_STKSTROVERFLOW,		/* stack string tab overflow */
302 	DTRACEDROP_DBLERROR			/* error in ERROR probe */
303 } dtrace_dropkind_t;
304 
305 typedef struct dtrace_dropdata {
306 	dtrace_hdl_t *dtdda_handle;		/* handle to DTrace library */
307 	processorid_t dtdda_cpu;		/* CPU, if any */
308 	dtrace_dropkind_t dtdda_kind;		/* kind of drop */
309 	uint64_t dtdda_drops;			/* number of drops */
310 	uint64_t dtdda_total;			/* total drops */
311 	const char *dtdda_msg;			/* preconstructed message */
312 } dtrace_dropdata_t;
313 
314 typedef int dtrace_handle_drop_f(const dtrace_dropdata_t *, void *);
315 extern int dtrace_handle_drop(dtrace_hdl_t *, dtrace_handle_drop_f *, void *);
316 
317 typedef void dtrace_handle_proc_f(struct ps_prochandle *, const char *, void *);
318 extern int dtrace_handle_proc(dtrace_hdl_t *, dtrace_handle_proc_f *, void *);
319 
320 #define	DTRACE_BUFDATA_AGGKEY		0x0001	/* aggregation key */
321 #define	DTRACE_BUFDATA_AGGVAL		0x0002	/* aggregation value */
322 #define	DTRACE_BUFDATA_AGGFORMAT	0x0004	/* aggregation format data */
323 #define	DTRACE_BUFDATA_AGGLAST		0x0008	/* last for this key/val */
324 
325 typedef struct dtrace_bufdata {
326 	dtrace_hdl_t *dtbda_handle;		/* handle to DTrace library */
327 	const char *dtbda_buffered;		/* buffered output */
328 	dtrace_probedata_t *dtbda_probe;	/* probe data */
329 	const dtrace_recdesc_t *dtbda_recdesc;	/* record description */
330 	const dtrace_aggdata_t *dtbda_aggdata;	/* aggregation data, if agg. */
331 	uint32_t dtbda_flags;			/* flags; see above */
332 } dtrace_bufdata_t;
333 
334 typedef int dtrace_handle_buffered_f(const dtrace_bufdata_t *, void *);
335 extern int dtrace_handle_buffered(dtrace_hdl_t *,
336     dtrace_handle_buffered_f *, void *);
337 
338 typedef struct dtrace_setoptdata {
339 	dtrace_hdl_t *dtsda_handle;		/* handle to DTrace library */
340 	const dtrace_probedata_t *dtsda_probe;	/* probe data */
341 	const char *dtsda_option;		/* option that was set */
342 	dtrace_optval_t dtsda_oldval;		/* old value */
343 	dtrace_optval_t dtsda_newval;		/* new value */
344 } dtrace_setoptdata_t;
345 
346 typedef int dtrace_handle_setopt_f(const dtrace_setoptdata_t *, void *);
347 extern int dtrace_handle_setopt(dtrace_hdl_t *,
348     dtrace_handle_setopt_f *, void *);
349 
350 /*
351  * DTrace Aggregate Interface
352  */
353 
354 #define	DTRACE_A_PERCPU		0x0001
355 #define	DTRACE_A_KEEPDELTA	0x0002
356 #define	DTRACE_A_ANONYMOUS	0x0004
357 #define	DTRACE_A_TOTAL		0x0008
358 #define	DTRACE_A_MINMAXBIN	0x0010
359 #define	DTRACE_A_HASNEGATIVES	0x0020
360 #define	DTRACE_A_HASPOSITIVES	0x0040
361 
362 #define	DTRACE_AGGZOOM_MAX		0.95	/* height of max bar */
363 
364 #define	DTRACE_AGGWALK_ERROR		-1	/* error while processing */
365 #define	DTRACE_AGGWALK_NEXT		0	/* proceed to next element */
366 #define	DTRACE_AGGWALK_ABORT		1	/* abort aggregation walk */
367 #define	DTRACE_AGGWALK_CLEAR		2	/* clear this element */
368 #define	DTRACE_AGGWALK_NORMALIZE	3	/* normalize this element */
369 #define	DTRACE_AGGWALK_DENORMALIZE	4	/* denormalize this element */
370 #define	DTRACE_AGGWALK_REMOVE		5	/* remove this element */
371 
372 struct dtrace_aggdata {
373 	dtrace_hdl_t *dtada_handle;		/* handle to DTrace library */
374 	dtrace_aggdesc_t *dtada_desc;		/* aggregation description */
375 	dtrace_eprobedesc_t *dtada_edesc;	/* enabled probe description */
376 	dtrace_probedesc_t *dtada_pdesc;	/* probe description */
377 	caddr_t dtada_data;			/* pointer to raw data */
378 	uint64_t dtada_normal;			/* the normal -- 1 for denorm */
379 	size_t dtada_size;			/* total size of the data */
380 	caddr_t dtada_delta;			/* delta data, if available */
381 	caddr_t *dtada_percpu;			/* per CPU data, if avail */
382 	caddr_t *dtada_percpu_delta;		/* per CPU delta, if avail */
383 	int64_t dtada_total;			/* per agg total, if avail */
384 	uint16_t dtada_minbin;			/* minimum bin, if avail */
385 	uint16_t dtada_maxbin;			/* maximum bin, if avail */
386 	uint32_t dtada_flags;			/* flags */
387 };
388 
389 typedef int dtrace_aggregate_f(const dtrace_aggdata_t *, void *);
390 typedef int dtrace_aggregate_walk_f(dtrace_hdl_t *,
391     dtrace_aggregate_f *, void *);
392 typedef int dtrace_aggregate_walk_joined_f(const dtrace_aggdata_t **,
393     const int, void *);
394 
395 extern void dtrace_aggregate_clear(dtrace_hdl_t *);
396 extern int dtrace_aggregate_snap(dtrace_hdl_t *);
397 extern int dtrace_aggregate_print(dtrace_hdl_t *, FILE *,
398     dtrace_aggregate_walk_f *);
399 
400 extern int dtrace_aggregate_walk(dtrace_hdl_t *, dtrace_aggregate_f *, void *);
401 
402 extern int dtrace_aggregate_walk_joined(dtrace_hdl_t *,
403     dtrace_aggvarid_t *, int, dtrace_aggregate_walk_joined_f *, void *);
404 
405 extern int dtrace_aggregate_walk_sorted(dtrace_hdl_t *,
406     dtrace_aggregate_f *, void *);
407 
408 extern int dtrace_aggregate_walk_keysorted(dtrace_hdl_t *,
409     dtrace_aggregate_f *, void *);
410 
411 extern int dtrace_aggregate_walk_valsorted(dtrace_hdl_t *,
412     dtrace_aggregate_f *, void *);
413 
414 extern int dtrace_aggregate_walk_keyvarsorted(dtrace_hdl_t *,
415     dtrace_aggregate_f *, void *);
416 
417 extern int dtrace_aggregate_walk_valvarsorted(dtrace_hdl_t *,
418     dtrace_aggregate_f *, void *);
419 
420 extern int dtrace_aggregate_walk_keyrevsorted(dtrace_hdl_t *,
421     dtrace_aggregate_f *, void *);
422 
423 extern int dtrace_aggregate_walk_valrevsorted(dtrace_hdl_t *,
424     dtrace_aggregate_f *, void *);
425 
426 extern int dtrace_aggregate_walk_keyvarrevsorted(dtrace_hdl_t *,
427     dtrace_aggregate_f *, void *);
428 
429 extern int dtrace_aggregate_walk_valvarrevsorted(dtrace_hdl_t *,
430     dtrace_aggregate_f *, void *);
431 
432 #define	DTRACE_AGD_PRINTED	0x1	/* aggregation printed in program */
433 
434 /*
435  * DTrace Process Control Interface
436  *
437  * Library clients who wish to have libdtrace create or grab processes for
438  * monitoring of their symbol table changes may use these interfaces to
439  * request that libdtrace obtain control of the process using libproc.
440  */
441 
442 extern struct ps_prochandle *dtrace_proc_create(dtrace_hdl_t *,
443     const char *, char *const *);
444 
445 extern struct ps_prochandle *dtrace_proc_grab(dtrace_hdl_t *, pid_t, int);
446 extern void dtrace_proc_release(dtrace_hdl_t *, struct ps_prochandle *);
447 extern void dtrace_proc_continue(dtrace_hdl_t *, struct ps_prochandle *);
448 
449 /*
450  * DTrace Object, Symbol, and Type Interfaces
451  *
452  * Library clients can use libdtrace to perform symbol and C type information
453  * lookups by symbol name, symbol address, or C type name, or to lookup meta-
454  * information cached for each of the program objects in use by DTrace.  The
455  * resulting struct contain pointers to arbitrary-length strings, including
456  * object, symbol, and type names, that are persistent until the next call to
457  * dtrace_update().  Once dtrace_update() is called, any cached values must
458  * be flushed and not used subsequently by the client program.
459  */
460 
461 #define	DTRACE_OBJ_EXEC	 ((const char *)0L)	/* primary executable file */
462 #define	DTRACE_OBJ_RTLD	 ((const char *)1L)	/* run-time link-editor */
463 #define	DTRACE_OBJ_CDEFS ((const char *)2L)	/* C include definitions */
464 #define	DTRACE_OBJ_DDEFS ((const char *)3L)	/* D program definitions */
465 #define	DTRACE_OBJ_EVERY ((const char *)-1L)	/* all known objects */
466 #define	DTRACE_OBJ_KMODS ((const char *)-2L)	/* all kernel objects */
467 #define	DTRACE_OBJ_UMODS ((const char *)-3L)	/* all user objects */
468 
469 typedef struct dtrace_objinfo {
470 	const char *dto_name;			/* object file scope name */
471 	const char *dto_file;			/* object file path (if any) */
472 	int dto_id;				/* object file id (if any) */
473 	uint_t dto_flags;			/* object flags (see below) */
474 	GElf_Addr dto_text_va;			/* address of text section */
475 	GElf_Xword dto_text_size;		/* size of text section */
476 	GElf_Addr dto_data_va;			/* address of data section */
477 	GElf_Xword dto_data_size;		/* size of data section */
478 	GElf_Addr dto_bss_va;			/* address of BSS */
479 	GElf_Xword dto_bss_size;		/* size of BSS */
480 } dtrace_objinfo_t;
481 
482 #define	DTRACE_OBJ_F_KERNEL	0x1		/* object is a kernel module */
483 #define	DTRACE_OBJ_F_PRIMARY	0x2		/* object is a primary module */
484 
485 typedef int dtrace_obj_f(dtrace_hdl_t *, const dtrace_objinfo_t *, void *);
486 
487 extern int dtrace_object_iter(dtrace_hdl_t *, dtrace_obj_f *, void *);
488 extern int dtrace_object_info(dtrace_hdl_t *, const char *, dtrace_objinfo_t *);
489 
490 typedef struct dtrace_syminfo {
491 	const char *dts_object;			/* object name */
492 	const char *dts_name;			/* symbol name */
493 	ulong_t dts_id;				/* symbol id */
494 } dtrace_syminfo_t;
495 
496 extern int dtrace_lookup_by_name(dtrace_hdl_t *, const char *, const char *,
497     GElf_Sym *, dtrace_syminfo_t *);
498 
499 extern int dtrace_lookup_by_addr(dtrace_hdl_t *, GElf_Addr addr,
500     GElf_Sym *, dtrace_syminfo_t *);
501 
502 typedef struct dtrace_typeinfo {
503 	const char *dtt_object;			/* object containing type */
504 	ctf_file_t *dtt_ctfp;			/* CTF container handle */
505 	ctf_id_t dtt_type;			/* CTF type identifier */
506 	uint_t dtt_flags;			/* Misc. flags */
507 } dtrace_typeinfo_t;
508 
509 #define	DTT_FL_USER	0x1			/* user type */
510 
511 extern int dtrace_lookup_by_type(dtrace_hdl_t *, const char *, const char *,
512     dtrace_typeinfo_t *);
513 
514 extern int dtrace_symbol_type(dtrace_hdl_t *, const GElf_Sym *,
515     const dtrace_syminfo_t *, dtrace_typeinfo_t *);
516 
517 extern int dtrace_type_strcompile(dtrace_hdl_t *,
518     const char *, dtrace_typeinfo_t *);
519 
520 extern int dtrace_type_fcompile(dtrace_hdl_t *,
521     FILE *, dtrace_typeinfo_t *);
522 
523 extern struct dt_node *dt_compile_sugar(dtrace_hdl_t *,
524     struct dt_node *);
525 
526 
527 /*
528  * DTrace Probe Interface
529  *
530  * Library clients can use these functions to iterate over the set of available
531  * probe definitions and inquire as to their attributes.  The probe iteration
532  * interfaces report probes that are declared as well as those from dtrace(4D).
533  */
534 typedef struct dtrace_probeinfo {
535 	dtrace_attribute_t dtp_attr;		/* name attributes */
536 	dtrace_attribute_t dtp_arga;		/* arg attributes */
537 	const dtrace_typeinfo_t *dtp_argv;	/* arg types */
538 	int dtp_argc;				/* arg count */
539 } dtrace_probeinfo_t;
540 
541 typedef int dtrace_probe_f(dtrace_hdl_t *, const dtrace_probedesc_t *, void *);
542 
543 extern int dtrace_probe_iter(dtrace_hdl_t *,
544     const dtrace_probedesc_t *pdp, dtrace_probe_f *, void *);
545 
546 extern int dtrace_probe_info(dtrace_hdl_t *,
547     const dtrace_probedesc_t *, dtrace_probeinfo_t *);
548 
549 /*
550  * DTrace Vector Interface
551  *
552  * The DTrace library normally speaks directly to dtrace(4D).  However,
553  * this communication may be vectored elsewhere.  Consumers who wish to
554  * perform a vectored open must fill in the vector, and use the dtrace_vopen()
555  * entry point to obtain a library handle.
556  */
557 struct dtrace_vector {
558 	int (*dtv_ioctl)(void *, int, void *);
559 	int (*dtv_lookup_by_addr)(void *, GElf_Addr, GElf_Sym *,
560 	    dtrace_syminfo_t *);
561 	int (*dtv_status)(void *, processorid_t);
562 	long (*dtv_sysconf)(void *, int);
563 };
564 
565 /*
566  * DTrace Utility Functions
567  *
568  * Library clients can use these functions to convert addresses strings, to
569  * convert between string and integer probe descriptions and the
570  * dtrace_probedesc_t representation, and to perform similar conversions on
571  * stability attributes.
572  */
573 extern int dtrace_addr2str(dtrace_hdl_t *, uint64_t, char *, int);
574 extern int dtrace_uaddr2str(dtrace_hdl_t *, pid_t, uint64_t, char *, int);
575 
576 extern int dtrace_xstr2desc(dtrace_hdl_t *, dtrace_probespec_t,
577     const char *, int, char *const [], dtrace_probedesc_t *);
578 
579 extern int dtrace_str2desc(dtrace_hdl_t *, dtrace_probespec_t,
580     const char *, dtrace_probedesc_t *);
581 
582 extern int dtrace_id2desc(dtrace_hdl_t *, dtrace_id_t, dtrace_probedesc_t *);
583 
584 #define	DTRACE_DESC2STR_MAX	1024	/* min buf size for dtrace_desc2str() */
585 
586 extern char *dtrace_desc2str(const dtrace_probedesc_t *, char *, size_t);
587 
588 #define	DTRACE_ATTR2STR_MAX	64	/* min buf size for dtrace_attr2str() */
589 
590 extern char *dtrace_attr2str(dtrace_attribute_t, char *, size_t);
591 extern int dtrace_str2attr(const char *, dtrace_attribute_t *);
592 
593 extern const char *dtrace_stability_name(dtrace_stability_t);
594 extern const char *dtrace_class_name(dtrace_class_t);
595 
596 extern int dtrace_provider_modules(dtrace_hdl_t *, const char **, int);
597 
598 extern const char *const _dtrace_version;
599 extern int _dtrace_debug;
600 
601 #ifdef	__cplusplus
602 }
603 #endif
604 
605 #endif	/* _DTRACE_H */
606