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 2010 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27/* 28 * Copyright (c) 2013, Joyent, Inc. All rights reserved. 29 * Copyright (c) 2011, 2016 by Delphix. All rights reserved. 30 */ 31 32#ifndef _DT_IMPL_H 33#define _DT_IMPL_H 34 35#include <sys/param.h> 36#include <sys/objfs.h> 37#ifndef illumos 38#include <sys/bitmap.h> 39#include <sys/utsname.h> 40#include <sys/ioccom.h> 41#include <sys/time.h> 42#include <string.h> 43#endif 44#include <setjmp.h> 45#include <libctf.h> 46#include <dtrace.h> 47#include <gelf.h> 48#ifdef illumos 49#include <synch.h> 50#endif 51 52#ifdef __cplusplus 53extern "C" { 54#endif 55 56#include <dt_parser.h> 57#include <dt_regset.h> 58#include <dt_inttab.h> 59#include <dt_strtab.h> 60#include <dt_ident.h> 61#include <dt_list.h> 62#include <dt_decl.h> 63#include <dt_as.h> 64#include <dt_proc.h> 65#include <dt_dof.h> 66#include <dt_pcb.h> 67#include <dt_pq.h> 68 69struct dt_module; /* see below */ 70struct dt_pfdict; /* see <dt_printf.h> */ 71struct dt_arg; /* see below */ 72struct dt_provider; /* see <dt_provider.h> */ 73struct dt_xlator; /* see <dt_xlator.h> */ 74 75typedef struct dt_intrinsic { 76 const char *din_name; /* string name of the intrinsic type */ 77 ctf_encoding_t din_data; /* integer or floating-point CTF encoding */ 78 uint_t din_kind; /* CTF type kind to instantiate */ 79} dt_intrinsic_t; 80 81typedef struct dt_typedef { 82 const char *dty_src; /* string name of typedef source type */ 83 const char *dty_dst; /* string name of typedef destination type */ 84} dt_typedef_t; 85 86typedef struct dt_intdesc { 87 const char *did_name; /* string name of the integer type */ 88 ctf_file_t *did_ctfp; /* CTF container for this type reference */ 89 ctf_id_t did_type; /* CTF type reference for this type */ 90 uintmax_t did_limit; /* maximum positive value held by type */ 91} dt_intdesc_t; 92 93typedef struct dt_modops { 94 uint_t (*do_syminit)(struct dt_module *); 95 void (*do_symsort)(struct dt_module *); 96 GElf_Sym *(*do_symname)(struct dt_module *, 97 const char *, GElf_Sym *, uint_t *); 98 GElf_Sym *(*do_symaddr)(struct dt_module *, 99 GElf_Addr, GElf_Sym *, uint_t *); 100} dt_modops_t; 101 102typedef struct dt_arg { 103 int da_ndx; /* index of this argument */ 104 int da_mapping; /* mapping of argument indices to arguments */ 105 ctf_id_t da_type; /* type of argument */ 106 ctf_file_t *da_ctfp; /* CTF container for type */ 107 dt_ident_t *da_xlator; /* translator, if any */ 108 struct dt_arg *da_next; /* next argument */ 109} dt_arg_t; 110 111typedef struct dt_sym { 112 uint_t ds_symid; /* id of corresponding symbol */ 113 uint_t ds_next; /* index of next element in hash chain */ 114} dt_sym_t; 115 116typedef struct dt_module { 117 dt_list_t dm_list; /* list forward/back pointers */ 118 char dm_name[DTRACE_MODNAMELEN]; /* string name of module */ 119 char dm_file[MAXPATHLEN]; /* file path of module (if any) */ 120 struct dt_module *dm_next; /* pointer to next module in hash chain */ 121 const dt_modops_t *dm_ops; /* pointer to data model's ops vector */ 122 Elf *dm_elf; /* libelf handle for module object */ 123 objfs_info_t dm_info; /* object filesystem private info */ 124 ctf_sect_t dm_symtab; /* symbol table for module */ 125 ctf_sect_t dm_strtab; /* string table for module */ 126 ctf_sect_t dm_ctdata; /* CTF data for module */ 127 ctf_file_t *dm_ctfp; /* CTF container handle */ 128 uint_t *dm_symbuckets; /* symbol table hash buckets (chain indices) */ 129 dt_sym_t *dm_symchains; /* symbol table hash chains buffer */ 130 void *dm_asmap; /* symbol pointers sorted by value */ 131 uint_t dm_symfree; /* index of next free hash element */ 132 uint_t dm_nsymbuckets; /* number of elements in bucket array */ 133 uint_t dm_nsymelems; /* number of elements in hash table */ 134 uint_t dm_asrsv; /* actual reserved size of dm_asmap */ 135 uint_t dm_aslen; /* number of entries in dm_asmap */ 136 uint_t dm_flags; /* module flags (see below) */ 137 int dm_modid; /* modinfo(1M) module identifier */ 138 GElf_Addr dm_text_va; /* virtual address of text section */ 139 GElf_Xword dm_text_size; /* size in bytes of text section */ 140 GElf_Addr dm_data_va; /* virtual address of data section */ 141 GElf_Xword dm_data_size; /* size in bytes of data section */ 142 GElf_Addr dm_bss_va; /* virtual address of BSS */ 143 GElf_Xword dm_bss_size; /* size in bytes of BSS */ 144 dt_idhash_t *dm_extern; /* external symbol definitions */ 145#ifndef illumos 146 caddr_t dm_reloc_offset; /* Symbol relocation offset. */ 147 uintptr_t *dm_sec_offsets; 148#endif 149 pid_t dm_pid; /* pid for this module */ 150 uint_t dm_nctflibs; /* number of ctf children libraries */ 151 ctf_file_t **dm_libctfp; /* process library ctf pointers */ 152 char **dm_libctfn; /* names of process ctf containers */ 153} dt_module_t; 154 155#define DT_DM_LOADED 0x1 /* module symbol and type data is loaded */ 156#define DT_DM_KERNEL 0x2 /* module is associated with a kernel object */ 157#define DT_DM_PRIMARY 0x4 /* module is a krtld primary kernel object */ 158 159#if defined(__FreeBSD__) || defined(__NetBSD__) 160/* 161 * A representation of a FreeBSD kernel module, used when checking module 162 * dependencies. This differs from dt_module_t, which refers to a KLD in the 163 * case of kernel probes. Since modules can be identified regardless of whether 164 * they've been compiled into the kernel, we use them to identify DTrace 165 * modules. 166 */ 167typedef struct dt_kmodule { 168 struct dt_kmodule *dkm_next; /* hash table entry */ 169 char *dkm_name; /* string name of module */ 170 dt_module_t *dkm_module; /* corresponding KLD module */ 171} dt_kmodule_t; 172#endif 173 174typedef struct dt_provmod { 175 char *dp_name; /* name of provider module */ 176 struct dt_provmod *dp_next; /* next module */ 177} dt_provmod_t; 178 179typedef struct dt_ahashent { 180 struct dt_ahashent *dtahe_prev; /* prev on hash chain */ 181 struct dt_ahashent *dtahe_next; /* next on hash chain */ 182 struct dt_ahashent *dtahe_prevall; /* prev on list of all */ 183 struct dt_ahashent *dtahe_nextall; /* next on list of all */ 184 uint64_t dtahe_hashval; /* hash value */ 185 size_t dtahe_size; /* size of data */ 186 dtrace_aggdata_t dtahe_data; /* data */ 187 void (*dtahe_aggregate)(int64_t *, int64_t *, size_t); /* function */ 188} dt_ahashent_t; 189 190typedef struct dt_ahash { 191 dt_ahashent_t **dtah_hash; /* hash table */ 192 dt_ahashent_t *dtah_all; /* list of all elements */ 193 size_t dtah_size; /* size of hash table */ 194} dt_ahash_t; 195 196typedef struct dt_aggregate { 197 dtrace_bufdesc_t dtat_buf; /* buf aggregation snapshot */ 198 int dtat_flags; /* aggregate flags */ 199 processorid_t dtat_ncpus; /* number of CPUs in aggregate */ 200 processorid_t *dtat_cpus; /* CPUs in aggregate */ 201 processorid_t dtat_ncpu; /* size of dtat_cpus array */ 202 processorid_t dtat_maxcpu; /* maximum number of CPUs */ 203 dt_ahash_t dtat_hash; /* aggregate hash table */ 204} dt_aggregate_t; 205 206typedef struct dt_print_aggdata { 207 dtrace_hdl_t *dtpa_dtp; /* pointer to libdtrace handle */ 208 dtrace_aggvarid_t dtpa_id; /* aggregation variable of interest */ 209 FILE *dtpa_fp; /* file pointer */ 210 int dtpa_allunprint; /* print only unprinted aggregations */ 211 int dtpa_agghist; /* print aggregation as histogram */ 212 int dtpa_agghisthdr; /* aggregation histogram hdr printed */ 213 int dtpa_aggpack; /* pack quantized aggregations */ 214} dt_print_aggdata_t; 215 216typedef struct dt_dirpath { 217 dt_list_t dir_list; /* linked-list forward/back pointers */ 218 char *dir_path; /* directory pathname */ 219} dt_dirpath_t; 220 221typedef struct dt_lib_depend { 222 dt_list_t dtld_deplist; /* linked-list forward/back pointers */ 223 char *dtld_library; /* library name */ 224 char *dtld_libpath; /* library pathname */ 225 uint_t dtld_finish; /* completion time in tsort for lib */ 226 uint_t dtld_start; /* starting time in tsort for lib */ 227 uint_t dtld_loaded; /* boolean: is this library loaded */ 228 dt_list_t dtld_dependencies; /* linked-list of lib dependencies */ 229 dt_list_t dtld_dependents; /* linked-list of lib dependents */ 230} dt_lib_depend_t; 231 232typedef uint32_t dt_version_t; /* encoded version (see below) */ 233 234struct dtrace_hdl { 235 const dtrace_vector_t *dt_vector; /* library vector, if vectored open */ 236 void *dt_varg; /* vector argument, if vectored open */ 237 dtrace_conf_t dt_conf; /* DTrace driver configuration profile */ 238 char dt_errmsg[BUFSIZ]; /* buffer for formatted syntax error msgs */ 239 const char *dt_errtag; /* tag used with last call to dt_set_errmsg() */ 240 dt_pcb_t *dt_pcb; /* pointer to current parsing control block */ 241 ulong_t dt_gen; /* compiler generation number */ 242 dt_list_t dt_programs; /* linked list of dtrace_prog_t's */ 243 dt_list_t dt_xlators; /* linked list of dt_xlator_t's */ 244 struct dt_xlator **dt_xlatormap; /* dt_xlator_t's indexed by dx_id */ 245 id_t dt_xlatorid; /* next dt_xlator_t id to assign */ 246 dt_ident_t *dt_externs; /* linked list of external symbol identifiers */ 247 dt_idhash_t *dt_macros; /* hash table of macro variable identifiers */ 248 dt_idhash_t *dt_aggs; /* hash table of aggregation identifiers */ 249 dt_idhash_t *dt_globals; /* hash table of global identifiers */ 250 dt_idhash_t *dt_tls; /* hash table of thread-local identifiers */ 251 dt_list_t dt_modlist; /* linked list of dt_module_t's */ 252 dt_module_t **dt_mods; /* hash table of dt_module_t's */ 253#if defined(__FreeBSD__) || defined(__NetBSD__) 254 dt_kmodule_t **dt_kmods; /* hash table of dt_kmodule_t's */ 255#endif 256 uint_t dt_modbuckets; /* number of module hash buckets */ 257 uint_t dt_nmods; /* number of modules in hash and list */ 258 dt_provmod_t *dt_provmod; /* linked list of provider modules */ 259 dt_module_t *dt_exec; /* pointer to executable module */ 260 dt_module_t *dt_rtld; /* pointer to run-time linker module */ 261 dt_module_t *dt_cdefs; /* pointer to C dynamic type module */ 262 dt_module_t *dt_ddefs; /* pointer to D dynamic type module */ 263 dt_list_t dt_provlist; /* linked list of dt_provider_t's */ 264 struct dt_provider **dt_provs; /* hash table of dt_provider_t's */ 265 uint_t dt_provbuckets; /* number of provider hash buckets */ 266 uint_t dt_nprovs; /* number of providers in hash and list */ 267 dt_proc_hash_t *dt_procs; /* hash table of grabbed process handles */ 268 char **dt_proc_env; /* additional environment variables */ 269 dt_intdesc_t dt_ints[6]; /* cached integer type descriptions */ 270 ctf_id_t dt_type_func; /* cached CTF identifier for function type */ 271 ctf_id_t dt_type_fptr; /* cached CTF identifier for function pointer */ 272 ctf_id_t dt_type_str; /* cached CTF identifier for string type */ 273 ctf_id_t dt_type_dyn; /* cached CTF identifier for <DYN> type */ 274 ctf_id_t dt_type_stack; /* cached CTF identifier for stack type */ 275 ctf_id_t dt_type_symaddr; /* cached CTF identifier for _symaddr type */ 276 ctf_id_t dt_type_usymaddr; /* cached CTF ident. for _usymaddr type */ 277 size_t dt_maxprobe; /* max enabled probe ID */ 278 dtrace_eprobedesc_t **dt_edesc; /* enabled probe descriptions */ 279 dtrace_probedesc_t **dt_pdesc; /* probe descriptions for enabled prbs */ 280 size_t dt_maxagg; /* max aggregation ID */ 281 dtrace_aggdesc_t **dt_aggdesc; /* aggregation descriptions */ 282 int dt_maxformat; /* max format ID */ 283 void **dt_formats; /* pointer to format array */ 284 int dt_maxstrdata; /* max strdata ID */ 285 char **dt_strdata; /* pointer to strdata array */ 286 dt_aggregate_t dt_aggregate; /* aggregate */ 287 dt_pq_t *dt_bufq; /* CPU-specific data queue */ 288 struct dt_pfdict *dt_pfdict; /* dictionary of printf conversions */ 289 dt_version_t dt_vmax; /* optional ceiling on program API binding */ 290 dtrace_attribute_t dt_amin; /* optional floor on program attributes */ 291 char *dt_cpp_path; /* pathname of cpp(1) to invoke if needed */ 292 char **dt_cpp_argv; /* argument vector for exec'ing cpp(1) */ 293 int dt_cpp_argc; /* count of initialized cpp(1) arguments */ 294 int dt_cpp_args; /* size of dt_cpp_argv[] array */ 295 char *dt_ld_path; /* pathname of ld(1) to invoke if needed */ 296#if defined(__FreeBSD__) || defined(__NetBSD__) 297 char *dt_objcopy_path; /* pathname of objcopy(1) to invoke if needed */ 298#endif 299 dt_list_t dt_lib_path; /* linked-list forming library search path */ 300 uint_t dt_lazyload; /* boolean: set via -xlazyload */ 301 uint_t dt_droptags; /* boolean: set via -xdroptags */ 302 uint_t dt_active; /* boolean: set once tracing is active */ 303 uint_t dt_stopped; /* boolean: set once tracing is stopped */ 304 processorid_t dt_beganon; /* CPU that executed BEGIN probe (if any) */ 305 processorid_t dt_endedon; /* CPU that executed END probe (if any) */ 306 uint_t dt_oflags; /* dtrace open-time options (see dtrace.h) */ 307 uint_t dt_cflags; /* dtrace compile-time options (see dtrace.h) */ 308 uint_t dt_dflags; /* dtrace link-time options (see dtrace.h) */ 309 uint_t dt_prcmode; /* dtrace process create mode (see dt_proc.h) */ 310 uint_t dt_linkmode; /* dtrace symbol linking mode (see below) */ 311 uint_t dt_linktype; /* dtrace link output file type (see below) */ 312 uint_t dt_xlatemode; /* dtrace translator linking mode (see below) */ 313 uint_t dt_stdcmode; /* dtrace stdc compatibility mode (see below) */ 314 uint_t dt_encoding; /* dtrace output encoding (see below) */ 315 uint_t dt_treedump; /* dtrace tree debug bitmap (see below) */ 316 uint64_t dt_options[DTRACEOPT_MAX]; /* dtrace run-time options */ 317 int dt_version; /* library version requested by client */ 318 int dt_ctferr; /* error resulting from last CTF failure */ 319 int dt_errno; /* error resulting from last failed operation */ 320#ifndef illumos 321 const char *dt_errfile; 322 int dt_errline; 323#endif 324 int dt_fd; /* file descriptor for dtrace pseudo-device */ 325 int dt_ftfd; /* file descriptor for fasttrap pseudo-device */ 326 int dt_fterr; /* saved errno from failed open of dt_ftfd */ 327 int dt_cdefs_fd; /* file descriptor for C CTF debugging cache */ 328 int dt_ddefs_fd; /* file descriptor for D CTF debugging cache */ 329#ifdef illumos 330 int dt_stdout_fd; /* file descriptor for saved stdout */ 331#else 332 FILE *dt_freopen_fp; /* file pointer for freopened stdout */ 333#endif 334 dtrace_handle_err_f *dt_errhdlr; /* error handler, if any */ 335 void *dt_errarg; /* error handler argument */ 336 dtrace_prog_t *dt_errprog; /* error handler program, if any */ 337 dtrace_handle_drop_f *dt_drophdlr; /* drop handler, if any */ 338 void *dt_droparg; /* drop handler argument */ 339 dtrace_handle_proc_f *dt_prochdlr; /* proc handler, if any */ 340 void *dt_procarg; /* proc handler argument */ 341 dtrace_handle_setopt_f *dt_setopthdlr; /* setopt handler, if any */ 342 void *dt_setoptarg; /* setopt handler argument */ 343 dtrace_status_t dt_status[2]; /* status cache */ 344 int dt_statusgen; /* current status generation */ 345 hrtime_t dt_laststatus; /* last status */ 346 hrtime_t dt_lastswitch; /* last switch of buffer data */ 347 hrtime_t dt_lastagg; /* last snapshot of aggregation data */ 348 char *dt_sprintf_buf; /* buffer for dtrace_sprintf() */ 349 int dt_sprintf_buflen; /* length of dtrace_sprintf() buffer */ 350 const char *dt_filetag; /* default filetag for dt_set_errmsg() */ 351 char *dt_buffered_buf; /* buffer for buffered output */ 352 size_t dt_buffered_offs; /* current offset into buffered buffer */ 353 size_t dt_buffered_size; /* size of buffered buffer */ 354 dtrace_handle_buffered_f *dt_bufhdlr; /* buffered handler, if any */ 355 void *dt_bufarg; /* buffered handler argument */ 356 dt_dof_t dt_dof; /* DOF generation buffers (see dt_dof.c) */ 357 struct utsname dt_uts; /* uname(2) information for system */ 358 dt_list_t dt_lib_dep; /* scratch linked-list of lib dependencies */ 359 dt_list_t dt_lib_dep_sorted; /* dependency sorted library list */ 360 dtrace_flowkind_t dt_flow; /* flow kind */ 361 const char *dt_prefix; /* recommended flow prefix */ 362 int dt_indent; /* recommended flow indent */ 363 dtrace_epid_t dt_last_epid; /* most recently consumed EPID */ 364 uint64_t dt_last_timestamp; /* most recently consumed timestamp */ 365 boolean_t dt_has_sugar; /* syntactic sugar used? */ 366}; 367 368/* 369 * Values for the user arg of the ECB. 370 */ 371#define DT_ECB_DEFAULT 0 372#define DT_ECB_ERROR 1 373 374/* 375 * Values for the dt_linkmode property, which is used by the assembler when 376 * processing external symbol references. User can set using -xlink=<mode>. 377 */ 378#define DT_LINK_KERNEL 0 /* kernel syms static, user syms dynamic */ 379#define DT_LINK_PRIMARY 1 /* primary kernel syms static, others dynamic */ 380#define DT_LINK_DYNAMIC 2 /* all symbols dynamic */ 381#define DT_LINK_STATIC 3 /* all symbols static */ 382 383/* 384 * Values for the dt_linktype property, which is used by dtrace_program_link() 385 * to determine the type of output file that is desired by the client. 386 */ 387#define DT_LTYP_ELF 0 /* produce ELF containing DOF */ 388#define DT_LTYP_DOF 1 /* produce stand-alone DOF */ 389 390/* 391 * Values for the dt_xlatemode property, which is used to determine whether 392 * references to dynamic translators are permitted. Set using -xlate=<mode>. 393 */ 394#define DT_XL_STATIC 0 /* require xlators to be statically defined */ 395#define DT_XL_DYNAMIC 1 /* produce references to dynamic translators */ 396 397/* 398 * Values for the dt_stdcmode property, which is used by the compiler when 399 * running cpp to determine the presence and setting of the __STDC__ macro. 400 */ 401#define DT_STDC_XA 0 /* ISO C + K&R C compat w/o ISO: __STDC__=0 */ 402#define DT_STDC_XC 1 /* Strict ISO C: __STDC__=1 */ 403#define DT_STDC_XS 2 /* K&R C: __STDC__ not defined */ 404#define DT_STDC_XT 3 /* ISO C + K&R C compat with ISO: __STDC__=0 */ 405 406/* 407 * Values for the dt_encoding property, which is used to force a particular 408 * character encoding (overriding default behavior and/or automatic detection). 409 */ 410#define DT_ENCODING_UNSET 0 411#define DT_ENCODING_ASCII 1 412#define DT_ENCODING_UTF8 2 413 414/* 415 * Macro to test whether a given pass bit is set in the dt_treedump bit-vector. 416 * If the bit for pass 'p' is set, the D compiler displays the parse tree for 417 * the program by printing it to stderr at the end of compiler pass 'p'. 418 */ 419#define DT_TREEDUMP_PASS(dtp, p) ((dtp)->dt_treedump & (1 << ((p) - 1))) 420 421/* 422 * Macros for accessing the cached CTF container and type ID for the common 423 * types "int", "string", and <DYN>, which we need to use frequently in the D 424 * compiler. The DT_INT_* macro relies upon "int" being at index 0 in the 425 * _dtrace_ints_* tables in dt_open.c; the others are also set up there. 426 */ 427#define DT_INT_CTFP(dtp) ((dtp)->dt_ints[0].did_ctfp) 428#define DT_INT_TYPE(dtp) ((dtp)->dt_ints[0].did_type) 429 430#define DT_FUNC_CTFP(dtp) ((dtp)->dt_ddefs->dm_ctfp) 431#define DT_FUNC_TYPE(dtp) ((dtp)->dt_type_func) 432 433#define DT_FPTR_CTFP(dtp) ((dtp)->dt_ddefs->dm_ctfp) 434#define DT_FPTR_TYPE(dtp) ((dtp)->dt_type_fptr) 435 436#define DT_STR_CTFP(dtp) ((dtp)->dt_ddefs->dm_ctfp) 437#define DT_STR_TYPE(dtp) ((dtp)->dt_type_str) 438 439#define DT_DYN_CTFP(dtp) ((dtp)->dt_ddefs->dm_ctfp) 440#define DT_DYN_TYPE(dtp) ((dtp)->dt_type_dyn) 441 442#define DT_STACK_CTFP(dtp) ((dtp)->dt_ddefs->dm_ctfp) 443#define DT_STACK_TYPE(dtp) ((dtp)->dt_type_stack) 444 445#define DT_SYMADDR_CTFP(dtp) ((dtp)->dt_ddefs->dm_ctfp) 446#define DT_SYMADDR_TYPE(dtp) ((dtp)->dt_type_symaddr) 447 448#define DT_USYMADDR_CTFP(dtp) ((dtp)->dt_ddefs->dm_ctfp) 449#define DT_USYMADDR_TYPE(dtp) ((dtp)->dt_type_usymaddr) 450 451/* 452 * Actions and subroutines are both DT_NODE_FUNC nodes; to avoid confusing 453 * an action for a subroutine (or vice versa), we assure that the DT_ACT_* 454 * constants and the DIF_SUBR_* constants occupy non-overlapping ranges by 455 * starting the DT_ACT_* constants at DIF_SUBR_MAX + 1. 456 */ 457#define DT_ACT_BASE DIF_SUBR_MAX + 1 458#define DT_ACT(n) (DT_ACT_BASE + (n)) 459 460#define DT_ACT_PRINTF DT_ACT(0) /* printf() action */ 461#define DT_ACT_TRACE DT_ACT(1) /* trace() action */ 462#define DT_ACT_TRACEMEM DT_ACT(2) /* tracemem() action */ 463#define DT_ACT_STACK DT_ACT(3) /* stack() action */ 464#define DT_ACT_STOP DT_ACT(4) /* stop() action */ 465#define DT_ACT_BREAKPOINT DT_ACT(5) /* breakpoint() action */ 466#define DT_ACT_PANIC DT_ACT(6) /* panic() action */ 467#define DT_ACT_SPECULATE DT_ACT(7) /* speculate() action */ 468#define DT_ACT_COMMIT DT_ACT(8) /* commit() action */ 469#define DT_ACT_DISCARD DT_ACT(9) /* discard() action */ 470#define DT_ACT_CHILL DT_ACT(10) /* chill() action */ 471#define DT_ACT_EXIT DT_ACT(11) /* exit() action */ 472#define DT_ACT_USTACK DT_ACT(12) /* ustack() action */ 473#define DT_ACT_PRINTA DT_ACT(13) /* printa() action */ 474#define DT_ACT_RAISE DT_ACT(14) /* raise() action */ 475#define DT_ACT_CLEAR DT_ACT(15) /* clear() action */ 476#define DT_ACT_NORMALIZE DT_ACT(16) /* normalize() action */ 477#define DT_ACT_DENORMALIZE DT_ACT(17) /* denormalize() action */ 478#define DT_ACT_TRUNC DT_ACT(18) /* trunc() action */ 479#define DT_ACT_SYSTEM DT_ACT(19) /* system() action */ 480#define DT_ACT_JSTACK DT_ACT(20) /* jstack() action */ 481#define DT_ACT_FTRUNCATE DT_ACT(21) /* ftruncate() action */ 482#define DT_ACT_FREOPEN DT_ACT(22) /* freopen() action */ 483#define DT_ACT_SYM DT_ACT(23) /* sym()/func() actions */ 484#define DT_ACT_MOD DT_ACT(24) /* mod() action */ 485#define DT_ACT_USYM DT_ACT(25) /* usym()/ufunc() actions */ 486#define DT_ACT_UMOD DT_ACT(26) /* umod() action */ 487#define DT_ACT_UADDR DT_ACT(27) /* uaddr() action */ 488#define DT_ACT_SETOPT DT_ACT(28) /* setopt() action */ 489#define DT_ACT_PRINT DT_ACT(29) /* print() action */ 490#define DT_ACT_PRINTM DT_ACT(30) /* printm() action */ 491 492/* 493 * Sentinel to tell freopen() to restore the saved stdout. This must not 494 * be ever valid for opening for write access via freopen(3C), which of 495 * course, "." never is. 496 */ 497#define DT_FREOPEN_RESTORE "." 498 499#define EDT_BASE 1000 /* base value for libdtrace errnos */ 500 501enum { 502 EDT_VERSION = EDT_BASE, /* client is requesting unsupported version */ 503 EDT_VERSINVAL, /* version string is invalid or overflows */ 504 EDT_VERSUNDEF, /* requested API version is not defined */ 505 EDT_VERSREDUCED, /* requested API version has been reduced */ 506 EDT_CTF, /* libctf called failed (dt_ctferr has more) */ 507 EDT_COMPILER, /* error in D program compilation */ 508 EDT_NOTUPREG, /* tuple register allocation failure */ 509 EDT_NOMEM, /* memory allocation failure */ 510 EDT_INT2BIG, /* integer limit exceeded */ 511 EDT_STR2BIG, /* string limit exceeded */ 512 EDT_NOMOD, /* unknown module name */ 513 EDT_NOPROV, /* unknown provider name */ 514 EDT_NOPROBE, /* unknown probe name */ 515 EDT_NOSYM, /* unknown symbol name */ 516 EDT_NOSYMADDR, /* no symbol corresponds to address */ 517 EDT_NOTYPE, /* unknown type name */ 518 EDT_NOVAR, /* unknown variable name */ 519 EDT_NOAGG, /* unknown aggregation name */ 520 EDT_BADSCOPE, /* improper use of type name scoping operator */ 521 EDT_BADSPEC, /* overspecified probe description */ 522 EDT_BADSPCV, /* bad macro variable in probe description */ 523 EDT_BADID, /* invalid probe identifier */ 524 EDT_NOTLOADED, /* module is not currently loaded */ 525 EDT_NOCTF, /* module does not contain any CTF data */ 526 EDT_DATAMODEL, /* module and program data models don't match */ 527 EDT_DIFVERS, /* library has newer DIF version than driver */ 528 EDT_BADAGG, /* unrecognized aggregating action */ 529 EDT_FIO, /* file i/o error */ 530 EDT_DIFINVAL, /* invalid DIF program */ 531 EDT_DIFSIZE, /* invalid DIF size */ 532 EDT_DIFFAULT, /* failed to copyin DIF program */ 533 EDT_BADPROBE, /* bad probe description */ 534 EDT_BADPGLOB, /* bad probe description globbing pattern */ 535 EDT_NOSCOPE, /* declaration scope stack underflow */ 536 EDT_NODECL, /* declaration stack underflow */ 537 EDT_DMISMATCH, /* record list does not match statement */ 538 EDT_DOFFSET, /* record data offset error */ 539 EDT_DALIGN, /* record data alignment error */ 540 EDT_BADOPTNAME, /* invalid dtrace_setopt option name */ 541 EDT_BADOPTVAL, /* invalid dtrace_setopt option value */ 542 EDT_BADOPTCTX, /* invalid dtrace_setopt option context */ 543 EDT_CPPFORK, /* failed to fork preprocessor */ 544 EDT_CPPEXEC, /* failed to exec preprocessor */ 545 EDT_CPPENT, /* preprocessor not found */ 546 EDT_CPPERR, /* unknown preprocessor error */ 547 EDT_SYMOFLOW, /* external symbol table overflow */ 548 EDT_ACTIVE, /* operation illegal when tracing is active */ 549 EDT_DESTRUCTIVE, /* destructive actions not allowed */ 550 EDT_NOANON, /* no anonymous tracing state */ 551 EDT_ISANON, /* can't claim anon state and enable probes */ 552 EDT_ENDTOOBIG, /* END enablings exceed size of prncpl buffer */ 553 EDT_NOCONV, /* failed to load type for printf conversion */ 554 EDT_BADCONV, /* incomplete printf conversion */ 555 EDT_BADERROR, /* invalid library ERROR action */ 556 EDT_ERRABORT, /* abort due to error */ 557 EDT_DROPABORT, /* abort due to drop */ 558 EDT_DIRABORT, /* abort explicitly directed */ 559 EDT_BADRVAL, /* invalid return value from callback */ 560 EDT_BADNORMAL, /* invalid normalization */ 561 EDT_BUFTOOSMALL, /* enabling exceeds size of buffer */ 562 EDT_BADTRUNC, /* invalid truncation */ 563 EDT_BUSY, /* device busy (active kernel debugger) */ 564 EDT_ACCESS, /* insufficient privileges to use DTrace */ 565 EDT_NOENT, /* dtrace device not available */ 566 EDT_BRICKED, /* abort due to systemic unresponsiveness */ 567 EDT_HARDWIRE, /* failed to load hard-wired definitions */ 568 EDT_ELFVERSION, /* libelf is out-of-date w.r.t libdtrace */ 569 EDT_NOBUFFERED, /* attempt to buffer output without handler */ 570 EDT_UNSTABLE, /* description matched unstable set of probes */ 571 EDT_BADSETOPT, /* invalid setopt library action */ 572 EDT_BADSTACKPC, /* invalid stack program counter size */ 573 EDT_BADAGGVAR, /* invalid aggregation variable identifier */ 574 EDT_OVERSION, /* client is requesting deprecated version */ 575 EDT_ENABLING_ERR, /* failed to enable probe */ 576 EDT_NOPROBES, /* no probes sites for declared provider */ 577 EDT_CANTLOAD /* failed to load a module */ 578}; 579 580/* 581 * Interfaces for parsing and comparing DTrace attribute tuples, which describe 582 * stability and architectural binding information. The dtrace_attribute_t 583 * structure and associated constant definitions are found in <sys/dtrace.h>. 584 */ 585extern dtrace_attribute_t dt_attr_min(dtrace_attribute_t, dtrace_attribute_t); 586extern dtrace_attribute_t dt_attr_max(dtrace_attribute_t, dtrace_attribute_t); 587extern char *dt_attr_str(dtrace_attribute_t, char *, size_t); 588extern int dt_attr_cmp(dtrace_attribute_t, dtrace_attribute_t); 589 590/* 591 * Interfaces for parsing and handling DTrace version strings. Version binding 592 * is a feature of the D compiler that is handled completely independently of 593 * the DTrace kernel infrastructure, so the definitions are here in libdtrace. 594 * Version strings are compiled into an encoded uint32_t which can be compared 595 * using C comparison operators. Version definitions are found in dt_open.c. 596 */ 597#define DT_VERSION_STRMAX 16 /* enough for "255.4095.4095\0" */ 598#define DT_VERSION_MAJMAX 0xFF /* maximum major version number */ 599#define DT_VERSION_MINMAX 0xFFF /* maximum minor version number */ 600#define DT_VERSION_MICMAX 0xFFF /* maximum micro version number */ 601 602#define DT_VERSION_NUMBER(M, m, u) \ 603 ((((M) & 0xFF) << 24) | (((m) & 0xFFF) << 12) | ((u) & 0xFFF)) 604 605#define DT_VERSION_MAJOR(v) (((v) & 0xFF000000) >> 24) 606#define DT_VERSION_MINOR(v) (((v) & 0x00FFF000) >> 12) 607#define DT_VERSION_MICRO(v) ((v) & 0x00000FFF) 608 609extern char *dt_version_num2str(dt_version_t, char *, size_t); 610extern int dt_version_str2num(const char *, dt_version_t *); 611extern int dt_version_defined(dt_version_t); 612 613/* 614 * Miscellaneous internal libdtrace interfaces. The definitions below are for 615 * libdtrace routines that do not yet merit their own separate header file. 616 */ 617extern char *dt_cpp_add_arg(dtrace_hdl_t *, const char *); 618extern char *dt_cpp_pop_arg(dtrace_hdl_t *); 619 620#ifdef illumos 621extern int dt_set_errno(dtrace_hdl_t *, int); 622#else 623int _dt_set_errno(dtrace_hdl_t *, int, const char *, int); 624void dt_get_errloc(dtrace_hdl_t *, const char **, int *); 625#define dt_set_errno(_a,_b) _dt_set_errno(_a,_b,__FILE__,__LINE__) 626#endif 627extern void dt_set_errmsg(dtrace_hdl_t *, const char *, const char *, 628 const char *, int, const char *, va_list); 629 630#ifdef illumos 631extern int dt_ioctl(dtrace_hdl_t *, int, void *); 632#else 633extern int dt_ioctl(dtrace_hdl_t *, u_long, void *); 634#endif 635extern int dt_status(dtrace_hdl_t *, processorid_t); 636extern long dt_sysconf(dtrace_hdl_t *, int); 637extern ssize_t dt_write(dtrace_hdl_t *, int, const void *, size_t); 638extern int dt_printf(dtrace_hdl_t *, FILE *, const char *, ...); 639 640extern void *dt_zalloc(dtrace_hdl_t *, size_t); 641extern void *dt_alloc(dtrace_hdl_t *, size_t); 642extern void dt_free(dtrace_hdl_t *, void *); 643extern void dt_difo_free(dtrace_hdl_t *, dtrace_difo_t *); 644 645extern int dt_gmatch(const char *, const char *); 646extern char *dt_basename(char *); 647 648extern ulong_t dt_popc(ulong_t); 649extern ulong_t dt_popcb(const ulong_t *, ulong_t); 650 651extern int dt_buffered_enable(dtrace_hdl_t *); 652extern int dt_buffered_flush(dtrace_hdl_t *, dtrace_probedata_t *, 653 const dtrace_recdesc_t *, const dtrace_aggdata_t *, uint32_t flags); 654extern void dt_buffered_disable(dtrace_hdl_t *); 655extern void dt_buffered_destroy(dtrace_hdl_t *); 656 657extern uint64_t dt_stddev(uint64_t *, uint64_t); 658 659extern int dt_rw_read_held(pthread_rwlock_t *); 660extern int dt_rw_write_held(pthread_rwlock_t *); 661extern int dt_mutex_held(pthread_mutex_t *); 662extern int dt_options_load(dtrace_hdl_t *); 663 664#define DT_RW_READ_HELD(x) dt_rw_read_held(x) 665#define DT_RW_WRITE_HELD(x) dt_rw_write_held(x) 666#define DT_RW_LOCK_HELD(x) (DT_RW_READ_HELD(x) || DT_RW_WRITE_HELD(x)) 667#define DT_MUTEX_HELD(x) dt_mutex_held(x) 668 669extern void dt_dprintf(const char *, ...); 670 671extern void dt_setcontext(dtrace_hdl_t *, dtrace_probedesc_t *); 672extern void dt_endcontext(dtrace_hdl_t *); 673 674extern void dt_pragma(dt_node_t *); 675extern int dt_reduce(dtrace_hdl_t *, dt_version_t); 676extern void dt_cg(dt_pcb_t *, dt_node_t *); 677extern dtrace_difo_t *dt_as(dt_pcb_t *); 678extern void dt_dis(const dtrace_difo_t *, FILE *); 679 680extern int dt_aggregate_go(dtrace_hdl_t *); 681extern int dt_aggregate_init(dtrace_hdl_t *); 682extern void dt_aggregate_destroy(dtrace_hdl_t *); 683 684extern int dt_epid_lookup(dtrace_hdl_t *, dtrace_epid_t, 685 dtrace_eprobedesc_t **, dtrace_probedesc_t **); 686extern void dt_epid_destroy(dtrace_hdl_t *); 687extern int dt_aggid_lookup(dtrace_hdl_t *, dtrace_aggid_t, dtrace_aggdesc_t **); 688extern void dt_aggid_destroy(dtrace_hdl_t *); 689 690extern void *dt_format_lookup(dtrace_hdl_t *, int); 691extern void dt_format_destroy(dtrace_hdl_t *); 692 693extern const char *dt_strdata_lookup(dtrace_hdl_t *, int); 694extern void dt_strdata_destroy(dtrace_hdl_t *); 695 696extern int dt_print_quantize(dtrace_hdl_t *, FILE *, 697 const void *, size_t, uint64_t); 698extern int dt_print_lquantize(dtrace_hdl_t *, FILE *, 699 const void *, size_t, uint64_t); 700extern int dt_print_llquantize(dtrace_hdl_t *, FILE *, 701 const void *, size_t, uint64_t); 702extern int dt_print_agg(const dtrace_aggdata_t *, void *); 703 704extern int dt_handle(dtrace_hdl_t *, dtrace_probedata_t *); 705extern int dt_handle_liberr(dtrace_hdl_t *, 706 const dtrace_probedata_t *, const char *); 707extern int dt_handle_cpudrop(dtrace_hdl_t *, processorid_t, 708 dtrace_dropkind_t, uint64_t); 709extern int dt_handle_status(dtrace_hdl_t *, 710 dtrace_status_t *, dtrace_status_t *); 711extern int dt_handle_setopt(dtrace_hdl_t *, dtrace_setoptdata_t *); 712 713extern int dt_lib_depend_add(dtrace_hdl_t *, dt_list_t *, const char *); 714extern dt_lib_depend_t *dt_lib_depend_lookup(dt_list_t *, const char *); 715 716extern dt_pcb_t *yypcb; /* pointer to current parser control block */ 717extern char yyintprefix; /* int token prefix for macros (+/-) */ 718extern char yyintsuffix[4]; /* int token suffix ([uUlL]*) */ 719extern int yyintdecimal; /* int token is decimal (1) or octal/hex (0) */ 720extern char yytext[]; /* lex input buffer */ 721extern int yylineno; /* lex line number */ 722extern int yydebug; /* lex debugging */ 723extern dt_node_t *yypragma; /* lex token list for control lines */ 724 725extern const dtrace_attribute_t _dtrace_maxattr; /* maximum attributes */ 726extern const dtrace_attribute_t _dtrace_defattr; /* default attributes */ 727extern const dtrace_attribute_t _dtrace_symattr; /* symbol ref attributes */ 728extern const dtrace_attribute_t _dtrace_typattr; /* type ref attributes */ 729extern const dtrace_attribute_t _dtrace_prvattr; /* provider attributes */ 730extern const dtrace_pattr_t _dtrace_prvdesc; /* provider attribute bundle */ 731 732extern const dt_version_t _dtrace_versions[]; /* array of valid versions */ 733extern const char *const _dtrace_version; /* current version string */ 734 735extern int _dtrace_strbuckets; /* number of hash buckets for strings */ 736extern int _dtrace_intbuckets; /* number of hash buckets for ints */ 737extern uint_t _dtrace_stkindent; /* default indent for stack/ustack */ 738extern uint_t _dtrace_pidbuckets; /* number of hash buckets for pids */ 739extern uint_t _dtrace_pidlrulim; /* number of proc handles to cache */ 740extern int _dtrace_debug; /* debugging messages enabled */ 741extern size_t _dtrace_bufsize; /* default dt_buf_create() size */ 742extern int _dtrace_argmax; /* default maximum probe arguments */ 743 744extern const char *_dtrace_libdir; /* default library directory */ 745extern const char *_dtrace_moddir; /* default kernel module directory */ 746 747#if defined(__FreeBSD__) || defined(__NetBSD__) 748extern int gmatch(const char *, const char *); 749extern int yylex(void); 750#endif 751 752#ifdef __NetBSD__ 753#define longlong_t long long 754#define u_longlong_t unsigned long long 755#define __DECONST(a, b) __UNCONST(b) 756#endif 757 758#ifdef __cplusplus 759} 760#endif 761 762#endif /* _DT_IMPL_H */ 763