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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _DTRACE_H 28 #define _DTRACE_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #include <sys/dtrace.h> 33 #include <stdarg.h> 34 #include <stdio.h> 35 #include <gelf.h> 36 37 #ifdef __cplusplus 38 extern "C" { 39 #endif 40 41 /* 42 * DTrace Dynamic Tracing Software: Library Interfaces 43 * 44 * Note: The contents of this file are private to the implementation of the 45 * Solaris system and DTrace subsystem and are subject to change at any time 46 * without notice. Applications and drivers using these interfaces will fail 47 * to run on future releases. These interfaces should not be used for any 48 * purpose except those expressly outlined in dtrace(7D) and libdtrace(3LIB). 49 * Please refer to the "Solaris Dynamic Tracing Guide" for more information. 50 */ 51 52 #define DTRACE_VERSION 1 /* library ABI interface version */ 53 54 struct ps_prochandle; 55 typedef struct dtrace_hdl dtrace_hdl_t; 56 typedef struct dtrace_prog dtrace_prog_t; 57 typedef struct dtrace_vector dtrace_vector_t; 58 typedef struct dtrace_aggdata dtrace_aggdata_t; 59 typedef int64_t dtrace_aggvarid_t; 60 61 #define DTRACE_O_NODEV 0x01 /* do not open dtrace(7D) device */ 62 #define DTRACE_O_NOSYS 0x02 /* do not load /system/object modules */ 63 #define DTRACE_O_LP64 0x04 /* force D compiler to be LP64 */ 64 #define DTRACE_O_ILP32 0x08 /* force D compiler to be ILP32 */ 65 #define DTRACE_O_MASK 0x0f /* mask of valid flags to dtrace_open */ 66 67 extern dtrace_hdl_t *dtrace_open(int, int, int *); 68 extern dtrace_hdl_t *dtrace_vopen(int, int, int *, 69 const dtrace_vector_t *, void *); 70 71 extern int dtrace_go(dtrace_hdl_t *); 72 extern int dtrace_stop(dtrace_hdl_t *); 73 extern void dtrace_sleep(dtrace_hdl_t *); 74 extern void dtrace_close(dtrace_hdl_t *); 75 76 extern int dtrace_errno(dtrace_hdl_t *); 77 extern const char *dtrace_errmsg(dtrace_hdl_t *, int); 78 extern const char *dtrace_faultstr(dtrace_hdl_t *, int); 79 extern const char *dtrace_subrstr(dtrace_hdl_t *, int); 80 81 extern int dtrace_setopt(dtrace_hdl_t *, const char *, const char *); 82 extern int dtrace_getopt(dtrace_hdl_t *, const char *, dtrace_optval_t *); 83 84 extern void dtrace_update(dtrace_hdl_t *); 85 extern int dtrace_ctlfd(dtrace_hdl_t *); 86 87 /* 88 * DTrace Program Interface 89 * 90 * DTrace programs can be created by compiling ASCII text files containing 91 * D programs or by compiling in-memory C strings that specify a D program. 92 * Once created, callers can examine the list of program statements and 93 * enable the probes and actions described by these statements. 94 */ 95 96 typedef struct dtrace_proginfo { 97 dtrace_attribute_t dpi_descattr; /* minimum probedesc attributes */ 98 dtrace_attribute_t dpi_stmtattr; /* minimum statement attributes */ 99 uint_t dpi_aggregates; /* number of aggregates specified in program */ 100 uint_t dpi_recgens; /* number of record generating probes in prog */ 101 uint_t dpi_matches; /* number of probes matched by program */ 102 uint_t dpi_speculations; /* number of speculations specified in prog */ 103 } dtrace_proginfo_t; 104 105 #define DTRACE_C_DIFV 0x0001 /* DIF verbose mode: show each compiled DIFO */ 106 #define DTRACE_C_EMPTY 0x0002 /* Permit compilation of empty D source files */ 107 #define DTRACE_C_ZDEFS 0x0004 /* Permit probe defs that match zero probes */ 108 #define DTRACE_C_EATTR 0x0008 /* Error if program attributes less than min */ 109 #define DTRACE_C_CPP 0x0010 /* Preprocess input file with cpp(1) utility */ 110 #define DTRACE_C_KNODEF 0x0020 /* Permit unresolved kernel symbols in DIFO */ 111 #define DTRACE_C_UNODEF 0x0040 /* Permit unresolved user symbols in DIFO */ 112 #define DTRACE_C_PSPEC 0x0080 /* Intepret ambiguous specifiers as probes */ 113 #define DTRACE_C_ETAGS 0x0100 /* Prefix error messages with error tags */ 114 #define DTRACE_C_ARGREF 0x0200 /* Do not require all macro args to be used */ 115 #define DTRACE_C_DEFARG 0x0800 /* Use 0/"" as value for unspecified args */ 116 #define DTRACE_C_NOLIBS 0x1000 /* Do not process D system libraries */ 117 #define DTRACE_C_MASK 0x1bff /* mask of all valid flags to dtrace_*compile */ 118 119 extern dtrace_prog_t *dtrace_program_strcompile(dtrace_hdl_t *, 120 const char *, dtrace_probespec_t, uint_t, int, char *const []); 121 122 extern dtrace_prog_t *dtrace_program_fcompile(dtrace_hdl_t *, 123 FILE *, uint_t, int, char *const []); 124 125 extern int dtrace_program_exec(dtrace_hdl_t *, dtrace_prog_t *, 126 dtrace_proginfo_t *); 127 extern void dtrace_program_info(dtrace_hdl_t *, dtrace_prog_t *, 128 dtrace_proginfo_t *); 129 130 #define DTRACE_D_STRIP 0x01 /* strip non-loadable sections from program */ 131 #define DTRACE_D_PROBES 0x02 /* include provider and probe definitions */ 132 #define DTRACE_D_MASK 0x03 /* mask of valid flags to dtrace_dof_create */ 133 134 extern int dtrace_program_link(dtrace_hdl_t *, dtrace_prog_t *, 135 uint_t, const char *, int, char *const []); 136 137 extern void *dtrace_dof_create(dtrace_hdl_t *, dtrace_prog_t *, uint_t); 138 extern void dtrace_dof_destroy(dtrace_hdl_t *, void *); 139 140 extern void *dtrace_getopt_dof(dtrace_hdl_t *); 141 extern void *dtrace_geterr_dof(dtrace_hdl_t *); 142 143 typedef struct dtrace_stmtdesc { 144 dtrace_ecbdesc_t *dtsd_ecbdesc; /* ECB description */ 145 dtrace_actdesc_t *dtsd_action; /* action list */ 146 dtrace_actdesc_t *dtsd_action_last; /* last action in action list */ 147 void *dtsd_aggdata; /* aggregation data */ 148 void *dtsd_fmtdata; /* type-specific output data */ 149 void (*dtsd_callback)(); /* callback function for EPID */ 150 void *dtsd_data; /* callback data pointer */ 151 dtrace_attribute_t dtsd_descattr; /* probedesc attributes */ 152 dtrace_attribute_t dtsd_stmtattr; /* statement attributes */ 153 } dtrace_stmtdesc_t; 154 155 typedef int dtrace_stmt_f(dtrace_hdl_t *, dtrace_prog_t *, 156 dtrace_stmtdesc_t *, void *); 157 158 extern dtrace_stmtdesc_t *dtrace_stmt_create(dtrace_hdl_t *, 159 dtrace_ecbdesc_t *); 160 extern dtrace_actdesc_t *dtrace_stmt_action(dtrace_hdl_t *, 161 dtrace_stmtdesc_t *); 162 extern int dtrace_stmt_add(dtrace_hdl_t *, dtrace_prog_t *, 163 dtrace_stmtdesc_t *); 164 extern int dtrace_stmt_iter(dtrace_hdl_t *, dtrace_prog_t *, 165 dtrace_stmt_f *, void *); 166 extern void dtrace_stmt_destroy(dtrace_hdl_t *, dtrace_stmtdesc_t *); 167 168 /* 169 * DTrace Data Consumption Interface 170 */ 171 typedef enum { 172 DTRACEFLOW_ENTRY, 173 DTRACEFLOW_RETURN, 174 DTRACEFLOW_NONE 175 } dtrace_flowkind_t; 176 177 #define DTRACE_CONSUME_ERROR -1 /* error while processing */ 178 #define DTRACE_CONSUME_THIS 0 /* consume this probe/record */ 179 #define DTRACE_CONSUME_NEXT 1 /* advance to next probe/rec */ 180 #define DTRACE_CONSUME_ABORT 2 /* abort consumption */ 181 182 typedef struct dtrace_probedata { 183 dtrace_hdl_t *dtpda_handle; /* handle to DTrace library */ 184 dtrace_eprobedesc_t *dtpda_edesc; /* enabled probe description */ 185 dtrace_probedesc_t *dtpda_pdesc; /* probe description */ 186 processorid_t dtpda_cpu; /* CPU for data */ 187 caddr_t dtpda_data; /* pointer to raw data */ 188 dtrace_flowkind_t dtpda_flow; /* flow kind */ 189 const char *dtpda_prefix; /* recommended flow prefix */ 190 int dtpda_indent; /* recommended flow indent */ 191 } dtrace_probedata_t; 192 193 typedef int dtrace_consume_probe_f(const dtrace_probedata_t *, void *); 194 typedef int dtrace_consume_rec_f(const dtrace_probedata_t *, 195 const dtrace_recdesc_t *, void *); 196 197 extern int dtrace_consume(dtrace_hdl_t *, FILE *, 198 dtrace_consume_probe_f *, dtrace_consume_rec_f *, void *); 199 200 #define DTRACE_STATUS_NONE 0 /* no status; not yet time */ 201 #define DTRACE_STATUS_OKAY 1 /* status okay */ 202 #define DTRACE_STATUS_EXITED 2 /* exit() was called; tracing stopped */ 203 #define DTRACE_STATUS_FILLED 3 /* fill buffer filled; tracing stoped */ 204 #define DTRACE_STATUS_STOPPED 4 /* tracing already stopped */ 205 206 extern int dtrace_status(dtrace_hdl_t *); 207 208 /* 209 * DTrace Formatted Output Interfaces 210 * 211 * To format output associated with a given dtrace_stmtdesc, the caller can 212 * invoke one of the following functions, passing the opaque dtsd_fmtdata and a 213 * list of record descriptions. These functions return either -1 to indicate 214 * an error, or a positive integer indicating the number of records consumed. 215 * For anonymous enablings, the consumer can use the dtrd_format member of 216 * the record description to obtain a format description. The dtfd_string 217 * member of the format description may be passed to dtrace_print{fa}_create() 218 * to create the opaque format data. 219 */ 220 extern void *dtrace_printf_create(dtrace_hdl_t *, const char *); 221 extern void *dtrace_printa_create(dtrace_hdl_t *, const char *); 222 extern size_t dtrace_printf_format(dtrace_hdl_t *, void *, char *, size_t); 223 224 extern int dtrace_fprintf(dtrace_hdl_t *, FILE *, void *, 225 const dtrace_probedata_t *, const dtrace_recdesc_t *, uint_t, 226 const void *, size_t); 227 228 extern int dtrace_fprinta(dtrace_hdl_t *, FILE *, void *, 229 const dtrace_probedata_t *, const dtrace_recdesc_t *, uint_t, 230 const void *, size_t); 231 232 extern int dtrace_system(dtrace_hdl_t *, FILE *, void *, 233 const dtrace_probedata_t *, const dtrace_recdesc_t *, uint_t, 234 const void *, size_t); 235 236 extern int dtrace_freopen(dtrace_hdl_t *, FILE *, void *, 237 const dtrace_probedata_t *, const dtrace_recdesc_t *, uint_t, 238 const void *, size_t); 239 240 /* 241 * DTrace Work Interface 242 */ 243 typedef enum { 244 DTRACE_WORKSTATUS_ERROR = -1, 245 DTRACE_WORKSTATUS_OKAY, 246 DTRACE_WORKSTATUS_DONE 247 } dtrace_workstatus_t; 248 249 extern dtrace_workstatus_t dtrace_work(dtrace_hdl_t *, FILE *, 250 dtrace_consume_probe_f *, dtrace_consume_rec_f *, void *); 251 252 /* 253 * DTrace Handler Interface 254 */ 255 #define DTRACE_HANDLE_ABORT -1 /* abort current operation */ 256 #define DTRACE_HANDLE_OK 0 /* handled okay; continue */ 257 258 typedef struct dtrace_errdata { 259 dtrace_hdl_t *dteda_handle; /* handle to DTrace library */ 260 dtrace_eprobedesc_t *dteda_edesc; /* enabled probe inducing err */ 261 dtrace_probedesc_t *dteda_pdesc; /* probe inducing error */ 262 processorid_t dteda_cpu; /* CPU of error */ 263 int dteda_action; /* action inducing error */ 264 int dteda_offset; /* offset in DIFO of error */ 265 int dteda_fault; /* specific fault */ 266 uint64_t dteda_addr; /* address of fault, if any */ 267 const char *dteda_msg; /* preconstructed message */ 268 } dtrace_errdata_t; 269 270 typedef int dtrace_handle_err_f(dtrace_errdata_t *, void *); 271 extern int dtrace_handle_err(dtrace_hdl_t *, dtrace_handle_err_f *, void *); 272 273 typedef enum { 274 DTRACEDROP_PRINCIPAL, /* drop to principal buffer */ 275 DTRACEDROP_AGGREGATION, /* drop to aggregation buffer */ 276 DTRACEDROP_DYNAMIC, /* dynamic drop */ 277 DTRACEDROP_DYNRINSE, /* dyn drop due to rinsing */ 278 DTRACEDROP_DYNDIRTY, /* dyn drop due to dirty */ 279 DTRACEDROP_SPEC, /* speculative drop */ 280 DTRACEDROP_SPECBUSY, /* spec drop due to busy */ 281 DTRACEDROP_SPECUNAVAIL /* spec drop due to unavail */ 282 } dtrace_dropkind_t; 283 284 typedef struct dtrace_dropdata { 285 dtrace_hdl_t *dtdda_handle; /* handle to DTrace library */ 286 processorid_t dtdda_cpu; /* CPU, if any */ 287 dtrace_dropkind_t dtdda_kind; /* kind of drop */ 288 uint64_t dtdda_drops; /* number of drops */ 289 uint64_t dtdda_total; /* total drops */ 290 const char *dtdda_msg; /* preconstructed message */ 291 } dtrace_dropdata_t; 292 293 typedef int dtrace_handle_drop_f(dtrace_dropdata_t *, void *); 294 extern int dtrace_handle_drop(dtrace_hdl_t *, dtrace_handle_drop_f *, void *); 295 296 typedef void dtrace_handle_proc_f(struct ps_prochandle *, void *); 297 extern int dtrace_handle_proc(dtrace_hdl_t *, dtrace_handle_proc_f *, void *); 298 299 typedef struct dtrace_bufdata { 300 dtrace_hdl_t *dtbda_handle; /* handle to DTrace library */ 301 const char *dtbda_buffered; /* buffered output */ 302 dtrace_probedata_t *dtbda_probe; /* probe data */ 303 dtrace_recdesc_t *dtbda_recdesc; /* record description */ 304 dtrace_aggdata_t *dtbda_aggdata; /* aggregation data, if agg. */ 305 } dtrace_bufdata_t; 306 307 typedef int dtrace_handle_buffered_f(dtrace_bufdata_t *, void *); 308 extern int dtrace_handle_buffered(dtrace_hdl_t *, 309 dtrace_handle_buffered_f *, void *); 310 311 /* 312 * DTrace Aggregate Interface 313 */ 314 315 #define DTRACE_A_PERCPU 0x0001 316 #define DTRACE_A_KEEPDELTA 0x0002 317 #define DTRACE_A_ANONYMOUS 0x0004 318 319 #define DTRACE_AGGWALK_ERROR -1 /* error while processing */ 320 #define DTRACE_AGGWALK_NEXT 0 /* proceed to next element */ 321 #define DTRACE_AGGWALK_ABORT 1 /* abort aggregation walk */ 322 #define DTRACE_AGGWALK_CLEAR 2 /* clear this element */ 323 #define DTRACE_AGGWALK_NORMALIZE 3 /* normalize this element */ 324 #define DTRACE_AGGWALK_DENORMALIZE 4 /* denormalize this element */ 325 #define DTRACE_AGGWALK_REMOVE 5 /* remove this element */ 326 327 struct dtrace_aggdata { 328 dtrace_hdl_t *dtada_handle; /* handle to DTrace library */ 329 dtrace_aggdesc_t *dtada_desc; /* aggregation description */ 330 dtrace_eprobedesc_t *dtada_edesc; /* enabled probe description */ 331 dtrace_probedesc_t *dtada_pdesc; /* probe description */ 332 caddr_t dtada_data; /* pointer to raw data */ 333 uint64_t dtada_normal; /* the normal -- 1 for denorm */ 334 size_t dtada_size; /* total size of the data */ 335 caddr_t dtada_delta; /* delta data, if available */ 336 caddr_t *dtada_percpu; /* per CPU data, if avail */ 337 caddr_t *dtada_percpu_delta; /* per CPU delta, if avail */ 338 }; 339 340 typedef int dtrace_aggregate_f(dtrace_aggdata_t *, void *); 341 typedef int dtrace_aggregate_walk_f(dtrace_hdl_t *, 342 dtrace_aggregate_f *, void *); 343 344 extern void dtrace_aggregate_clear(dtrace_hdl_t *); 345 extern int dtrace_aggregate_snap(dtrace_hdl_t *); 346 extern int dtrace_aggregate_print(dtrace_hdl_t *, FILE *, 347 dtrace_aggregate_walk_f *); 348 349 extern int dtrace_aggregate_walk(dtrace_hdl_t *, dtrace_aggregate_f *, void *); 350 351 extern int dtrace_aggregate_walk_keysorted(dtrace_hdl_t *, 352 dtrace_aggregate_f *, void *); 353 354 extern int dtrace_aggregate_walk_valsorted(dtrace_hdl_t *, 355 dtrace_aggregate_f *, void *); 356 357 extern int dtrace_aggregate_walk_keyvarsorted(dtrace_hdl_t *, 358 dtrace_aggregate_f *, void *); 359 360 extern int dtrace_aggregate_walk_valvarsorted(dtrace_hdl_t *, 361 dtrace_aggregate_f *, void *); 362 363 extern int dtrace_aggregate_walk_keyrevsorted(dtrace_hdl_t *, 364 dtrace_aggregate_f *, void *); 365 366 extern int dtrace_aggregate_walk_valrevsorted(dtrace_hdl_t *, 367 dtrace_aggregate_f *, void *); 368 369 extern int dtrace_aggregate_walk_keyvarrevsorted(dtrace_hdl_t *, 370 dtrace_aggregate_f *, void *); 371 372 extern int dtrace_aggregate_walk_valvarrevsorted(dtrace_hdl_t *, 373 dtrace_aggregate_f *, void *); 374 375 #define DTRACE_AGD_PRINTED 0x1 /* aggregation printed in program */ 376 377 /* 378 * DTrace Process Control Interface 379 * 380 * Library clients who wish to have libdtrace create or grab processes for 381 * monitoring of their symbol table changes may use these interfaces to 382 * request that libdtrace obtain control of the process using libproc. 383 */ 384 385 extern struct ps_prochandle *dtrace_proc_create(dtrace_hdl_t *, 386 const char *, char *const *); 387 388 extern struct ps_prochandle *dtrace_proc_grab(dtrace_hdl_t *, pid_t, int); 389 extern void dtrace_proc_release(dtrace_hdl_t *, struct ps_prochandle *); 390 extern void dtrace_proc_continue(dtrace_hdl_t *, struct ps_prochandle *); 391 392 /* 393 * DTrace Object, Symbol, and Type Interfaces 394 * 395 * Library clients can use libdtrace to perform symbol and C type information 396 * lookups by symbol name, symbol address, or C type name, or to lookup meta- 397 * information cached for each of the program objects in use by DTrace. The 398 * resulting struct contain pointers to arbitrary-length strings, including 399 * object, symbol, and type names, that are persistent until the next call to 400 * dtrace_update(). Once dtrace_update() is called, any cached values must 401 * be flushed and not used subsequently by the client program. 402 */ 403 404 #define DTRACE_OBJ_EXEC ((const char *)0L) /* primary executable file */ 405 #define DTRACE_OBJ_RTLD ((const char *)1L) /* run-time link-editor */ 406 #define DTRACE_OBJ_CDEFS ((const char *)2L) /* C include definitions */ 407 #define DTRACE_OBJ_DDEFS ((const char *)3L) /* D program definitions */ 408 #define DTRACE_OBJ_EVERY ((const char *)-1L) /* all known objects */ 409 #define DTRACE_OBJ_KMODS ((const char *)-2L) /* all kernel objects */ 410 #define DTRACE_OBJ_UMODS ((const char *)-3L) /* all user objects */ 411 412 typedef struct dtrace_objinfo { 413 const char *dto_name; /* object file scope name */ 414 const char *dto_file; /* object file path (if any) */ 415 int dto_id; /* object file id (if any) */ 416 uint_t dto_flags; /* object flags (see below) */ 417 GElf_Addr dto_text_va; /* address of text section */ 418 GElf_Xword dto_text_size; /* size of text section */ 419 GElf_Addr dto_data_va; /* address of data section */ 420 GElf_Xword dto_data_size; /* size of data section */ 421 GElf_Addr dto_bss_va; /* address of BSS */ 422 GElf_Xword dto_bss_size; /* size of BSS */ 423 } dtrace_objinfo_t; 424 425 #define DTRACE_OBJ_F_KERNEL 0x1 /* object is a kernel module */ 426 #define DTRACE_OBJ_F_PRIMARY 0x2 /* object is a primary module */ 427 428 typedef int dtrace_obj_f(dtrace_hdl_t *, const dtrace_objinfo_t *, void *); 429 430 extern int dtrace_object_iter(dtrace_hdl_t *, dtrace_obj_f *, void *); 431 extern int dtrace_object_info(dtrace_hdl_t *, const char *, dtrace_objinfo_t *); 432 433 typedef struct dtrace_syminfo { 434 const char *dts_object; /* object name */ 435 const char *dts_name; /* symbol name */ 436 ulong_t dts_id; /* symbol id */ 437 } dtrace_syminfo_t; 438 439 extern int dtrace_lookup_by_name(dtrace_hdl_t *, const char *, const char *, 440 GElf_Sym *, dtrace_syminfo_t *); 441 442 extern int dtrace_lookup_by_addr(dtrace_hdl_t *, GElf_Addr addr, 443 GElf_Sym *, dtrace_syminfo_t *); 444 445 typedef struct dtrace_typeinfo { 446 const char *dtt_object; /* object containing type */ 447 ctf_file_t *dtt_ctfp; /* CTF container handle */ 448 ctf_id_t dtt_type; /* CTF type identifier */ 449 } dtrace_typeinfo_t; 450 451 extern int dtrace_lookup_by_type(dtrace_hdl_t *, const char *, const char *, 452 dtrace_typeinfo_t *); 453 454 extern int dtrace_symbol_type(dtrace_hdl_t *, const GElf_Sym *, 455 const dtrace_syminfo_t *, dtrace_typeinfo_t *); 456 457 extern int dtrace_type_strcompile(dtrace_hdl_t *, 458 const char *, dtrace_typeinfo_t *); 459 460 extern int dtrace_type_fcompile(dtrace_hdl_t *, 461 FILE *, dtrace_typeinfo_t *); 462 463 /* 464 * DTrace Probe Interface 465 * 466 * Library clients can use these functions to iterate over the set of available 467 * probe definitions and inquire as to their attributes. The probe iteration 468 * interfaces report probes that are declared as well as those from dtrace(7D). 469 */ 470 typedef struct dtrace_probeinfo { 471 dtrace_attribute_t dtp_attr; /* name attributes */ 472 dtrace_attribute_t dtp_arga; /* arg attributes */ 473 const dtrace_typeinfo_t *dtp_argv; /* arg types */ 474 int dtp_argc; /* arg count */ 475 } dtrace_probeinfo_t; 476 477 typedef int dtrace_probe_f(dtrace_hdl_t *, const dtrace_probedesc_t *, void *); 478 479 extern int dtrace_probe_iter(dtrace_hdl_t *, 480 const dtrace_probedesc_t *pdp, dtrace_probe_f *, void *); 481 482 extern int dtrace_probe_info(dtrace_hdl_t *, 483 const dtrace_probedesc_t *, dtrace_probeinfo_t *); 484 485 /* 486 * DTrace Vector Interface 487 * 488 * The DTrace library normally speaks directly to dtrace(7D). However, 489 * this communication may be vectored elsewhere. Consumers who wish to 490 * perform a vectored open must fill in the vector, and use the dtrace_vopen() 491 * entry point to obtain a library handle. 492 */ 493 struct dtrace_vector { 494 int (*dtv_ioctl)(void *, int, void *); 495 int (*dtv_lookup_by_addr)(void *, GElf_Addr, GElf_Sym *, 496 dtrace_syminfo_t *); 497 int (*dtv_status)(void *, processorid_t); 498 long (*dtv_sysconf)(void *, int); 499 }; 500 501 /* 502 * DTrace Utility Functions 503 * 504 * Library clients can use these functions to convert between string and 505 * integer probe descriptions and the dtrace_probedesc_t representation 506 * and to perform similar conversions on stability attributes. 507 */ 508 extern int dtrace_xstr2desc(dtrace_hdl_t *, dtrace_probespec_t, 509 const char *, int, char *const [], dtrace_probedesc_t *); 510 511 extern int dtrace_str2desc(dtrace_hdl_t *, dtrace_probespec_t, 512 const char *, dtrace_probedesc_t *); 513 514 extern int dtrace_id2desc(dtrace_hdl_t *, dtrace_id_t, dtrace_probedesc_t *); 515 516 #define DTRACE_DESC2STR_MAX 1024 /* min buf size for dtrace_desc2str() */ 517 518 extern char *dtrace_desc2str(const dtrace_probedesc_t *, char *, size_t); 519 520 #define DTRACE_ATTR2STR_MAX 64 /* min buf size for dtrace_attr2str() */ 521 522 extern char *dtrace_attr2str(dtrace_attribute_t, char *, size_t); 523 extern int dtrace_str2attr(const char *, dtrace_attribute_t *); 524 525 extern const char *dtrace_stability_name(dtrace_stability_t); 526 extern const char *dtrace_class_name(dtrace_class_t); 527 528 extern int dtrace_provider_modules(dtrace_hdl_t *, const char **, int); 529 530 extern const char *const _dtrace_version; 531 extern int _dtrace_debug; 532 533 #ifdef __cplusplus 534 } 535 #endif 536 537 #endif /* _DTRACE_H */ 538