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) 2012 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 #include <setjmp.h> 38 #include <libctf.h> 39 #include <dtrace.h> 40 #include <gelf.h> 41 #include <synch.h> 42 43 #ifdef __cplusplus 44 extern "C" { 45 #endif 46 47 #include <dt_parser.h> 48 #include <dt_regset.h> 49 #include <dt_inttab.h> 50 #include <dt_strtab.h> 51 #include <dt_ident.h> 52 #include <dt_list.h> 53 #include <dt_decl.h> 54 #include <dt_as.h> 55 #include <dt_proc.h> 56 #include <dt_dof.h> 57 #include <dt_pcb.h> 58 #include <dt_pq.h> 59 60 struct dt_module; /* see below */ 61 struct dt_pfdict; /* see <dt_printf.h> */ 62 struct dt_arg; /* see below */ 63 struct dt_provider; /* see <dt_provider.h> */ 64 struct dt_xlator; /* see <dt_xlator.h> */ 65 66 typedef struct dt_intrinsic { 67 const char *din_name; /* string name of the intrinsic type */ 68 ctf_encoding_t din_data; /* integer or floating-point CTF encoding */ 69 uint_t din_kind; /* CTF type kind to instantiate */ 70 } dt_intrinsic_t; 71 72 typedef struct dt_typedef { 73 const char *dty_src; /* string name of typedef source type */ 74 const char *dty_dst; /* string name of typedef destination type */ 75 } dt_typedef_t; 76 77 typedef struct dt_intdesc { 78 const char *did_name; /* string name of the integer type */ 79 ctf_file_t *did_ctfp; /* CTF container for this type reference */ 80 ctf_id_t did_type; /* CTF type reference for this type */ 81 uintmax_t did_limit; /* maximum positive value held by type */ 82 } dt_intdesc_t; 83 84 typedef struct dt_modops { 85 uint_t (*do_syminit)(struct dt_module *); 86 void (*do_symsort)(struct dt_module *); 87 GElf_Sym *(*do_symname)(struct dt_module *, 88 const char *, GElf_Sym *, uint_t *); 89 GElf_Sym *(*do_symaddr)(struct dt_module *, 90 GElf_Addr, GElf_Sym *, uint_t *); 91 } dt_modops_t; 92 93 typedef struct dt_arg { 94 int da_ndx; /* index of this argument */ 95 int da_mapping; /* mapping of argument indices to arguments */ 96 ctf_id_t da_type; /* type of argument */ 97 ctf_file_t *da_ctfp; /* CTF container for type */ 98 dt_ident_t *da_xlator; /* translator, if any */ 99 struct dt_arg *da_next; /* next argument */ 100 } dt_arg_t; 101 102 typedef struct dt_sym { 103 uint_t ds_symid; /* id of corresponding symbol */ 104 uint_t ds_next; /* index of next element in hash chain */ 105 } dt_sym_t; 106 107 typedef struct dt_module { 108 dt_list_t dm_list; /* list forward/back pointers */ 109 char dm_name[DTRACE_MODNAMELEN]; /* string name of module */ 110 char dm_file[MAXPATHLEN]; /* file path of module (if any) */ 111 struct dt_module *dm_next; /* pointer to next module in hash chain */ 112 const dt_modops_t *dm_ops; /* pointer to data model's ops vector */ 113 Elf *dm_elf; /* libelf handle for module object */ 114 objfs_info_t dm_info; /* object filesystem private info */ 115 ctf_sect_t dm_symtab; /* symbol table for module */ 116 ctf_sect_t dm_strtab; /* string table for module */ 117 ctf_sect_t dm_ctdata; /* CTF data for module */ 118 ctf_file_t *dm_ctfp; /* CTF container handle */ 119 uint_t *dm_symbuckets; /* symbol table hash buckets (chain indices) */ 120 dt_sym_t *dm_symchains; /* symbol table hash chains buffer */ 121 void *dm_asmap; /* symbol pointers sorted by value */ 122 uint_t dm_symfree; /* index of next free hash element */ 123 uint_t dm_nsymbuckets; /* number of elements in bucket array */ 124 uint_t dm_nsymelems; /* number of elements in hash table */ 125 uint_t dm_asrsv; /* actual reserved size of dm_asmap */ 126 uint_t dm_aslen; /* number of entries in dm_asmap */ 127 uint_t dm_flags; /* module flags (see below) */ 128 int dm_modid; /* modinfo(1M) module identifier */ 129 GElf_Addr dm_text_va; /* virtual address of text section */ 130 GElf_Xword dm_text_size; /* size in bytes of text section */ 131 GElf_Addr dm_data_va; /* virtual address of data section */ 132 GElf_Xword dm_data_size; /* size in bytes of data section */ 133 GElf_Addr dm_bss_va; /* virtual address of BSS */ 134 GElf_Xword dm_bss_size; /* size in bytes of BSS */ 135 dt_idhash_t *dm_extern; /* external symbol definitions */ 136 } dt_module_t; 137 138 #define DT_DM_LOADED 0x1 /* module symbol and type data is loaded */ 139 #define DT_DM_KERNEL 0x2 /* module is associated with a kernel object */ 140 #define DT_DM_PRIMARY 0x4 /* module is a krtld primary kernel object */ 141 142 typedef struct dt_provmod { 143 char *dp_name; /* name of provider module */ 144 struct dt_provmod *dp_next; /* next module */ 145 } dt_provmod_t; 146 147 typedef struct dt_ahashent { 148 struct dt_ahashent *dtahe_prev; /* prev on hash chain */ 149 struct dt_ahashent *dtahe_next; /* next on hash chain */ 150 struct dt_ahashent *dtahe_prevall; /* prev on list of all */ 151 struct dt_ahashent *dtahe_nextall; /* next on list of all */ 152 uint64_t dtahe_hashval; /* hash value */ 153 size_t dtahe_size; /* size of data */ 154 dtrace_aggdata_t dtahe_data; /* data */ 155 void (*dtahe_aggregate)(int64_t *, int64_t *, size_t); /* function */ 156 } dt_ahashent_t; 157 158 typedef struct dt_ahash { 159 dt_ahashent_t **dtah_hash; /* hash table */ 160 dt_ahashent_t *dtah_all; /* list of all elements */ 161 size_t dtah_size; /* size of hash table */ 162 } dt_ahash_t; 163 164 typedef struct dt_aggregate { 165 dtrace_bufdesc_t dtat_buf; /* buf aggregation snapshot */ 166 int dtat_flags; /* aggregate flags */ 167 processorid_t dtat_ncpus; /* number of CPUs in aggregate */ 168 processorid_t *dtat_cpus; /* CPUs in aggregate */ 169 processorid_t dtat_ncpu; /* size of dtat_cpus array */ 170 processorid_t dtat_maxcpu; /* maximum number of CPUs */ 171 dt_ahash_t dtat_hash; /* aggregate hash table */ 172 } dt_aggregate_t; 173 174 typedef struct dt_print_aggdata { 175 dtrace_hdl_t *dtpa_dtp; /* pointer to libdtrace handle */ 176 dtrace_aggvarid_t dtpa_id; /* aggregation variable of interest */ 177 FILE *dtpa_fp; /* file pointer */ 178 int dtpa_allunprint; /* print only unprinted aggregations */ 179 } dt_print_aggdata_t; 180 181 typedef struct dt_dirpath { 182 dt_list_t dir_list; /* linked-list forward/back pointers */ 183 char *dir_path; /* directory pathname */ 184 } dt_dirpath_t; 185 186 typedef struct dt_lib_depend { 187 dt_list_t dtld_deplist; /* linked-list forward/back pointers */ 188 char *dtld_library; /* library name */ 189 char *dtld_libpath; /* library pathname */ 190 uint_t dtld_finish; /* completion time in tsort for lib */ 191 uint_t dtld_start; /* starting time in tsort for lib */ 192 uint_t dtld_loaded; /* boolean: is this library loaded */ 193 dt_list_t dtld_dependencies; /* linked-list of lib dependencies */ 194 dt_list_t dtld_dependents; /* linked-list of lib dependents */ 195 } dt_lib_depend_t; 196 197 typedef uint32_t dt_version_t; /* encoded version (see below) */ 198 199 struct dtrace_hdl { 200 const dtrace_vector_t *dt_vector; /* library vector, if vectored open */ 201 void *dt_varg; /* vector argument, if vectored open */ 202 dtrace_conf_t dt_conf; /* DTrace driver configuration profile */ 203 char dt_errmsg[BUFSIZ]; /* buffer for formatted syntax error msgs */ 204 const char *dt_errtag; /* tag used with last call to dt_set_errmsg() */ 205 dt_pcb_t *dt_pcb; /* pointer to current parsing control block */ 206 ulong_t dt_gen; /* compiler generation number */ 207 dt_list_t dt_programs; /* linked list of dtrace_prog_t's */ 208 dt_list_t dt_xlators; /* linked list of dt_xlator_t's */ 209 struct dt_xlator **dt_xlatormap; /* dt_xlator_t's indexed by dx_id */ 210 id_t dt_xlatorid; /* next dt_xlator_t id to assign */ 211 dt_ident_t *dt_externs; /* linked list of external symbol identifiers */ 212 dt_idhash_t *dt_macros; /* hash table of macro variable identifiers */ 213 dt_idhash_t *dt_aggs; /* hash table of aggregation identifiers */ 214 dt_idhash_t *dt_globals; /* hash table of global identifiers */ 215 dt_idhash_t *dt_tls; /* hash table of thread-local identifiers */ 216 dt_list_t dt_modlist; /* linked list of dt_module_t's */ 217 dt_module_t **dt_mods; /* hash table of dt_module_t's */ 218 uint_t dt_modbuckets; /* number of module hash buckets */ 219 uint_t dt_nmods; /* number of modules in hash and list */ 220 dt_provmod_t *dt_provmod; /* linked list of provider modules */ 221 dt_module_t *dt_exec; /* pointer to executable module */ 222 dt_module_t *dt_rtld; /* pointer to run-time linker module */ 223 dt_module_t *dt_cdefs; /* pointer to C dynamic type module */ 224 dt_module_t *dt_ddefs; /* pointer to D dynamic type module */ 225 dt_list_t dt_provlist; /* linked list of dt_provider_t's */ 226 struct dt_provider **dt_provs; /* hash table of dt_provider_t's */ 227 uint_t dt_provbuckets; /* number of provider hash buckets */ 228 uint_t dt_nprovs; /* number of providers in hash and list */ 229 dt_proc_hash_t *dt_procs; /* hash table of grabbed process handles */ 230 char **dt_proc_env; /* additional environment variables */ 231 dt_intdesc_t dt_ints[6]; /* cached integer type descriptions */ 232 ctf_id_t dt_type_func; /* cached CTF identifier for function type */ 233 ctf_id_t dt_type_fptr; /* cached CTF identifier for function pointer */ 234 ctf_id_t dt_type_str; /* cached CTF identifier for string type */ 235 ctf_id_t dt_type_dyn; /* cached CTF identifier for <DYN> type */ 236 ctf_id_t dt_type_stack; /* cached CTF identifier for stack type */ 237 ctf_id_t dt_type_symaddr; /* cached CTF identifier for _symaddr type */ 238 ctf_id_t dt_type_usymaddr; /* cached CTF ident. for _usymaddr type */ 239 size_t dt_maxprobe; /* max enabled probe ID */ 240 dtrace_eprobedesc_t **dt_edesc; /* enabled probe descriptions */ 241 dtrace_probedesc_t **dt_pdesc; /* probe descriptions for enabled prbs */ 242 size_t dt_maxagg; /* max aggregation ID */ 243 dtrace_aggdesc_t **dt_aggdesc; /* aggregation descriptions */ 244 int dt_maxformat; /* max format ID */ 245 void **dt_formats; /* pointer to format array */ 246 int dt_maxstrdata; /* max strdata ID */ 247 char **dt_strdata; /* pointer to strdata array */ 248 dt_aggregate_t dt_aggregate; /* aggregate */ 249 dt_pq_t *dt_bufq; /* CPU-specific data queue */ 250 struct dt_pfdict *dt_pfdict; /* dictionary of printf conversions */ 251 dt_version_t dt_vmax; /* optional ceiling on program API binding */ 252 dtrace_attribute_t dt_amin; /* optional floor on program attributes */ 253 char *dt_cpp_path; /* pathname of cpp(1) to invoke if needed */ 254 char **dt_cpp_argv; /* argument vector for exec'ing cpp(1) */ 255 int dt_cpp_argc; /* count of initialized cpp(1) arguments */ 256 int dt_cpp_args; /* size of dt_cpp_argv[] array */ 257 char *dt_ld_path; /* pathname of ld(1) to invoke if needed */ 258 dt_list_t dt_lib_path; /* linked-list forming library search path */ 259 uint_t dt_lazyload; /* boolean: set via -xlazyload */ 260 uint_t dt_droptags; /* boolean: set via -xdroptags */ 261 uint_t dt_active; /* boolean: set once tracing is active */ 262 uint_t dt_stopped; /* boolean: set once tracing is stopped */ 263 processorid_t dt_beganon; /* CPU that executed BEGIN probe (if any) */ 264 processorid_t dt_endedon; /* CPU that executed END probe (if any) */ 265 uint_t dt_oflags; /* dtrace open-time options (see dtrace.h) */ 266 uint_t dt_cflags; /* dtrace compile-time options (see dtrace.h) */ 267 uint_t dt_dflags; /* dtrace link-time options (see dtrace.h) */ 268 uint_t dt_prcmode; /* dtrace process create mode (see dt_proc.h) */ 269 uint_t dt_linkmode; /* dtrace symbol linking mode (see below) */ 270 uint_t dt_linktype; /* dtrace link output file type (see below) */ 271 uint_t dt_xlatemode; /* dtrace translator linking mode (see below) */ 272 uint_t dt_stdcmode; /* dtrace stdc compatibility mode (see below) */ 273 uint_t dt_treedump; /* dtrace tree debug bitmap (see below) */ 274 uint64_t dt_options[DTRACEOPT_MAX]; /* dtrace run-time options */ 275 int dt_version; /* library version requested by client */ 276 int dt_ctferr; /* error resulting from last CTF failure */ 277 int dt_errno; /* error resulting from last failed operation */ 278 int dt_fd; /* file descriptor for dtrace pseudo-device */ 279 int dt_ftfd; /* file descriptor for fasttrap pseudo-device */ 280 int dt_fterr; /* saved errno from failed open of dt_ftfd */ 281 int dt_cdefs_fd; /* file descriptor for C CTF debugging cache */ 282 int dt_ddefs_fd; /* file descriptor for D CTF debugging cache */ 283 int dt_stdout_fd; /* file descriptor for saved stdout */ 284 dtrace_handle_err_f *dt_errhdlr; /* error handler, if any */ 285 void *dt_errarg; /* error handler argument */ 286 dtrace_prog_t *dt_errprog; /* error handler program, if any */ 287 dtrace_handle_drop_f *dt_drophdlr; /* drop handler, if any */ 288 void *dt_droparg; /* drop handler argument */ 289 dtrace_handle_proc_f *dt_prochdlr; /* proc handler, if any */ 290 void *dt_procarg; /* proc handler argument */ 291 dtrace_handle_setopt_f *dt_setopthdlr; /* setopt handler, if any */ 292 void *dt_setoptarg; /* setopt handler argument */ 293 dtrace_status_t dt_status[2]; /* status cache */ 294 int dt_statusgen; /* current status generation */ 295 hrtime_t dt_laststatus; /* last status */ 296 hrtime_t dt_lastswitch; /* last switch of buffer data */ 297 hrtime_t dt_lastagg; /* last snapshot of aggregation data */ 298 char *dt_sprintf_buf; /* buffer for dtrace_sprintf() */ 299 int dt_sprintf_buflen; /* length of dtrace_sprintf() buffer */ 300 const char *dt_filetag; /* default filetag for dt_set_errmsg() */ 301 char *dt_buffered_buf; /* buffer for buffered output */ 302 size_t dt_buffered_offs; /* current offset into buffered buffer */ 303 size_t dt_buffered_size; /* size of buffered buffer */ 304 dtrace_handle_buffered_f *dt_bufhdlr; /* buffered handler, if any */ 305 void *dt_bufarg; /* buffered handler argument */ 306 dt_dof_t dt_dof; /* DOF generation buffers (see dt_dof.c) */ 307 struct utsname dt_uts; /* uname(2) information for system */ 308 dt_list_t dt_lib_dep; /* scratch linked-list of lib dependencies */ 309 dt_list_t dt_lib_dep_sorted; /* dependency sorted library list */ 310 dtrace_flowkind_t dt_flow; /* flow kind */ 311 const char *dt_prefix; /* recommended flow prefix */ 312 int dt_indent; /* recommended flow indent */ 313 dtrace_epid_t dt_last_epid; /* most recently consumed EPID */ 314 uint64_t dt_last_timestamp; /* most recently consumed timestamp */ 315 }; 316 317 /* 318 * Values for the user arg of the ECB. 319 */ 320 #define DT_ECB_DEFAULT 0 321 #define DT_ECB_ERROR 1 322 323 /* 324 * Values for the dt_linkmode property, which is used by the assembler when 325 * processing external symbol references. User can set using -xlink=<mode>. 326 */ 327 #define DT_LINK_KERNEL 0 /* kernel syms static, user syms dynamic */ 328 #define DT_LINK_PRIMARY 1 /* primary kernel syms static, others dynamic */ 329 #define DT_LINK_DYNAMIC 2 /* all symbols dynamic */ 330 #define DT_LINK_STATIC 3 /* all symbols static */ 331 332 /* 333 * Values for the dt_linktype property, which is used by dtrace_program_link() 334 * to determine the type of output file that is desired by the client. 335 */ 336 #define DT_LTYP_ELF 0 /* produce ELF containing DOF */ 337 #define DT_LTYP_DOF 1 /* produce stand-alone DOF */ 338 339 /* 340 * Values for the dt_xlatemode property, which is used to determine whether 341 * references to dynamic translators are permitted. Set using -xlate=<mode>. 342 */ 343 #define DT_XL_STATIC 0 /* require xlators to be statically defined */ 344 #define DT_XL_DYNAMIC 1 /* produce references to dynamic translators */ 345 346 /* 347 * Values for the dt_stdcmode property, which is used by the compiler when 348 * running cpp to determine the presence and setting of the __STDC__ macro. 349 */ 350 #define DT_STDC_XA 0 /* ISO C + K&R C compat w/o ISO: __STDC__=0 */ 351 #define DT_STDC_XC 1 /* Strict ISO C: __STDC__=1 */ 352 #define DT_STDC_XS 2 /* K&R C: __STDC__ not defined */ 353 #define DT_STDC_XT 3 /* ISO C + K&R C compat with ISO: __STDC__=0 */ 354 355 /* 356 * Macro to test whether a given pass bit is set in the dt_treedump bit-vector. 357 * If the bit for pass 'p' is set, the D compiler displays the parse tree for 358 * the program by printing it to stderr at the end of compiler pass 'p'. 359 */ 360 #define DT_TREEDUMP_PASS(dtp, p) ((dtp)->dt_treedump & (1 << ((p) - 1))) 361 362 /* 363 * Macros for accessing the cached CTF container and type ID for the common 364 * types "int", "string", and <DYN>, which we need to use frequently in the D 365 * compiler. The DT_INT_* macro relies upon "int" being at index 0 in the 366 * _dtrace_ints_* tables in dt_open.c; the others are also set up there. 367 */ 368 #define DT_INT_CTFP(dtp) ((dtp)->dt_ints[0].did_ctfp) 369 #define DT_INT_TYPE(dtp) ((dtp)->dt_ints[0].did_type) 370 371 #define DT_FUNC_CTFP(dtp) ((dtp)->dt_ddefs->dm_ctfp) 372 #define DT_FUNC_TYPE(dtp) ((dtp)->dt_type_func) 373 374 #define DT_FPTR_CTFP(dtp) ((dtp)->dt_ddefs->dm_ctfp) 375 #define DT_FPTR_TYPE(dtp) ((dtp)->dt_type_fptr) 376 377 #define DT_STR_CTFP(dtp) ((dtp)->dt_ddefs->dm_ctfp) 378 #define DT_STR_TYPE(dtp) ((dtp)->dt_type_str) 379 380 #define DT_DYN_CTFP(dtp) ((dtp)->dt_ddefs->dm_ctfp) 381 #define DT_DYN_TYPE(dtp) ((dtp)->dt_type_dyn) 382 383 #define DT_STACK_CTFP(dtp) ((dtp)->dt_ddefs->dm_ctfp) 384 #define DT_STACK_TYPE(dtp) ((dtp)->dt_type_stack) 385 386 #define DT_SYMADDR_CTFP(dtp) ((dtp)->dt_ddefs->dm_ctfp) 387 #define DT_SYMADDR_TYPE(dtp) ((dtp)->dt_type_symaddr) 388 389 #define DT_USYMADDR_CTFP(dtp) ((dtp)->dt_ddefs->dm_ctfp) 390 #define DT_USYMADDR_TYPE(dtp) ((dtp)->dt_type_usymaddr) 391 392 /* 393 * Actions and subroutines are both DT_NODE_FUNC nodes; to avoid confusing 394 * an action for a subroutine (or vice versa), we assure that the DT_ACT_* 395 * constants and the DIF_SUBR_* constants occupy non-overlapping ranges by 396 * starting the DT_ACT_* constants at DIF_SUBR_MAX + 1. 397 */ 398 #define DT_ACT_BASE DIF_SUBR_MAX + 1 399 #define DT_ACT(n) (DT_ACT_BASE + (n)) 400 401 #define DT_ACT_PRINTF DT_ACT(0) /* printf() action */ 402 #define DT_ACT_TRACE DT_ACT(1) /* trace() action */ 403 #define DT_ACT_TRACEMEM DT_ACT(2) /* tracemem() action */ 404 #define DT_ACT_STACK DT_ACT(3) /* stack() action */ 405 #define DT_ACT_STOP DT_ACT(4) /* stop() action */ 406 #define DT_ACT_BREAKPOINT DT_ACT(5) /* breakpoint() action */ 407 #define DT_ACT_PANIC DT_ACT(6) /* panic() action */ 408 #define DT_ACT_SPECULATE DT_ACT(7) /* speculate() action */ 409 #define DT_ACT_COMMIT DT_ACT(8) /* commit() action */ 410 #define DT_ACT_DISCARD DT_ACT(9) /* discard() action */ 411 #define DT_ACT_CHILL DT_ACT(10) /* chill() action */ 412 #define DT_ACT_EXIT DT_ACT(11) /* exit() action */ 413 #define DT_ACT_USTACK DT_ACT(12) /* ustack() action */ 414 #define DT_ACT_PRINTA DT_ACT(13) /* printa() action */ 415 #define DT_ACT_RAISE DT_ACT(14) /* raise() action */ 416 #define DT_ACT_CLEAR DT_ACT(15) /* clear() action */ 417 #define DT_ACT_NORMALIZE DT_ACT(16) /* normalize() action */ 418 #define DT_ACT_DENORMALIZE DT_ACT(17) /* denormalize() action */ 419 #define DT_ACT_TRUNC DT_ACT(18) /* trunc() action */ 420 #define DT_ACT_SYSTEM DT_ACT(19) /* system() action */ 421 #define DT_ACT_JSTACK DT_ACT(20) /* jstack() action */ 422 #define DT_ACT_FTRUNCATE DT_ACT(21) /* ftruncate() action */ 423 #define DT_ACT_FREOPEN DT_ACT(22) /* freopen() action */ 424 #define DT_ACT_SYM DT_ACT(23) /* sym()/func() actions */ 425 #define DT_ACT_MOD DT_ACT(24) /* mod() action */ 426 #define DT_ACT_USYM DT_ACT(25) /* usym()/ufunc() actions */ 427 #define DT_ACT_UMOD DT_ACT(26) /* umod() action */ 428 #define DT_ACT_UADDR DT_ACT(27) /* uaddr() action */ 429 #define DT_ACT_SETOPT DT_ACT(28) /* setopt() action */ 430 #define DT_ACT_PRINT DT_ACT(29) /* print() action */ 431 432 /* 433 * Sentinel to tell freopen() to restore the saved stdout. This must not 434 * be ever valid for opening for write access via freopen(3C), which of 435 * course, "." never is. 436 */ 437 #define DT_FREOPEN_RESTORE "." 438 439 #define EDT_BASE 1000 /* base value for libdtrace errnos */ 440 441 enum { 442 EDT_VERSION = EDT_BASE, /* client is requesting unsupported version */ 443 EDT_VERSINVAL, /* version string is invalid or overflows */ 444 EDT_VERSUNDEF, /* requested API version is not defined */ 445 EDT_VERSREDUCED, /* requested API version has been reduced */ 446 EDT_CTF, /* libctf called failed (dt_ctferr has more) */ 447 EDT_COMPILER, /* error in D program compilation */ 448 EDT_NOTUPREG, /* tuple register allocation failure */ 449 EDT_NOMEM, /* memory allocation failure */ 450 EDT_INT2BIG, /* integer limit exceeded */ 451 EDT_STR2BIG, /* string limit exceeded */ 452 EDT_NOMOD, /* unknown module name */ 453 EDT_NOPROV, /* unknown provider name */ 454 EDT_NOPROBE, /* unknown probe name */ 455 EDT_NOSYM, /* unknown symbol name */ 456 EDT_NOSYMADDR, /* no symbol corresponds to address */ 457 EDT_NOTYPE, /* unknown type name */ 458 EDT_NOVAR, /* unknown variable name */ 459 EDT_NOAGG, /* unknown aggregation name */ 460 EDT_BADSCOPE, /* improper use of type name scoping operator */ 461 EDT_BADSPEC, /* overspecified probe description */ 462 EDT_BADSPCV, /* bad macro variable in probe description */ 463 EDT_BADID, /* invalid probe identifier */ 464 EDT_NOTLOADED, /* module is not currently loaded */ 465 EDT_NOCTF, /* module does not contain any CTF data */ 466 EDT_DATAMODEL, /* module and program data models don't match */ 467 EDT_DIFVERS, /* library has newer DIF version than driver */ 468 EDT_BADAGG, /* unrecognized aggregating action */ 469 EDT_FIO, /* file i/o error */ 470 EDT_DIFINVAL, /* invalid DIF program */ 471 EDT_DIFSIZE, /* invalid DIF size */ 472 EDT_DIFFAULT, /* failed to copyin DIF program */ 473 EDT_BADPROBE, /* bad probe description */ 474 EDT_BADPGLOB, /* bad probe description globbing pattern */ 475 EDT_NOSCOPE, /* declaration scope stack underflow */ 476 EDT_NODECL, /* declaration stack underflow */ 477 EDT_DMISMATCH, /* record list does not match statement */ 478 EDT_DOFFSET, /* record data offset error */ 479 EDT_DALIGN, /* record data alignment error */ 480 EDT_BADOPTNAME, /* invalid dtrace_setopt option name */ 481 EDT_BADOPTVAL, /* invalid dtrace_setopt option value */ 482 EDT_BADOPTCTX, /* invalid dtrace_setopt option context */ 483 EDT_CPPFORK, /* failed to fork preprocessor */ 484 EDT_CPPEXEC, /* failed to exec preprocessor */ 485 EDT_CPPENT, /* preprocessor not found */ 486 EDT_CPPERR, /* unknown preprocessor error */ 487 EDT_SYMOFLOW, /* external symbol table overflow */ 488 EDT_ACTIVE, /* operation illegal when tracing is active */ 489 EDT_DESTRUCTIVE, /* destructive actions not allowed */ 490 EDT_NOANON, /* no anonymous tracing state */ 491 EDT_ISANON, /* can't claim anon state and enable probes */ 492 EDT_ENDTOOBIG, /* END enablings exceed size of prncpl buffer */ 493 EDT_NOCONV, /* failed to load type for printf conversion */ 494 EDT_BADCONV, /* incomplete printf conversion */ 495 EDT_BADERROR, /* invalid library ERROR action */ 496 EDT_ERRABORT, /* abort due to error */ 497 EDT_DROPABORT, /* abort due to drop */ 498 EDT_DIRABORT, /* abort explicitly directed */ 499 EDT_BADRVAL, /* invalid return value from callback */ 500 EDT_BADNORMAL, /* invalid normalization */ 501 EDT_BUFTOOSMALL, /* enabling exceeds size of buffer */ 502 EDT_BADTRUNC, /* invalid truncation */ 503 EDT_BUSY, /* device busy (active kernel debugger) */ 504 EDT_ACCESS, /* insufficient privileges to use DTrace */ 505 EDT_NOENT, /* dtrace device not available */ 506 EDT_BRICKED, /* abort due to systemic unresponsiveness */ 507 EDT_HARDWIRE, /* failed to load hard-wired definitions */ 508 EDT_ELFVERSION, /* libelf is out-of-date w.r.t libdtrace */ 509 EDT_NOBUFFERED, /* attempt to buffer output without handler */ 510 EDT_UNSTABLE, /* description matched unstable set of probes */ 511 EDT_BADSETOPT, /* invalid setopt library action */ 512 EDT_BADSTACKPC, /* invalid stack program counter size */ 513 EDT_BADAGGVAR, /* invalid aggregation variable identifier */ 514 EDT_OVERSION, /* client is requesting deprecated version */ 515 EDT_ENABLING_ERR, /* failed to enable probe */ 516 EDT_NOPROBES /* no probes sites for declared provider */ 517 }; 518 519 /* 520 * Interfaces for parsing and comparing DTrace attribute tuples, which describe 521 * stability and architectural binding information. The dtrace_attribute_t 522 * structure and associated constant definitions are found in <sys/dtrace.h>. 523 */ 524 extern dtrace_attribute_t dt_attr_min(dtrace_attribute_t, dtrace_attribute_t); 525 extern dtrace_attribute_t dt_attr_max(dtrace_attribute_t, dtrace_attribute_t); 526 extern char *dt_attr_str(dtrace_attribute_t, char *, size_t); 527 extern int dt_attr_cmp(dtrace_attribute_t, dtrace_attribute_t); 528 529 /* 530 * Interfaces for parsing and handling DTrace version strings. Version binding 531 * is a feature of the D compiler that is handled completely independently of 532 * the DTrace kernel infrastructure, so the definitions are here in libdtrace. 533 * Version strings are compiled into an encoded uint32_t which can be compared 534 * using C comparison operators. Version definitions are found in dt_open.c. 535 */ 536 #define DT_VERSION_STRMAX 16 /* enough for "255.4095.4095\0" */ 537 #define DT_VERSION_MAJMAX 0xFF /* maximum major version number */ 538 #define DT_VERSION_MINMAX 0xFFF /* maximum minor version number */ 539 #define DT_VERSION_MICMAX 0xFFF /* maximum micro version number */ 540 541 #define DT_VERSION_NUMBER(M, m, u) \ 542 ((((M) & 0xFF) << 24) | (((m) & 0xFFF) << 12) | ((u) & 0xFFF)) 543 544 #define DT_VERSION_MAJOR(v) (((v) & 0xFF000000) >> 24) 545 #define DT_VERSION_MINOR(v) (((v) & 0x00FFF000) >> 12) 546 #define DT_VERSION_MICRO(v) ((v) & 0x00000FFF) 547 548 extern char *dt_version_num2str(dt_version_t, char *, size_t); 549 extern int dt_version_str2num(const char *, dt_version_t *); 550 extern int dt_version_defined(dt_version_t); 551 552 /* 553 * Miscellaneous internal libdtrace interfaces. The definitions below are for 554 * libdtrace routines that do not yet merit their own separate header file. 555 */ 556 extern char *dt_cpp_add_arg(dtrace_hdl_t *, const char *); 557 extern char *dt_cpp_pop_arg(dtrace_hdl_t *); 558 559 extern int dt_set_errno(dtrace_hdl_t *, int); 560 extern void dt_set_errmsg(dtrace_hdl_t *, const char *, const char *, 561 const char *, int, const char *, va_list); 562 563 extern int dt_ioctl(dtrace_hdl_t *, int, void *); 564 extern int dt_status(dtrace_hdl_t *, processorid_t); 565 extern long dt_sysconf(dtrace_hdl_t *, int); 566 extern ssize_t dt_write(dtrace_hdl_t *, int, const void *, size_t); 567 extern int dt_printf(dtrace_hdl_t *, FILE *, const char *, ...); 568 569 extern void *dt_zalloc(dtrace_hdl_t *, size_t); 570 extern void *dt_alloc(dtrace_hdl_t *, size_t); 571 extern void dt_free(dtrace_hdl_t *, void *); 572 extern void dt_difo_free(dtrace_hdl_t *, dtrace_difo_t *); 573 574 extern int dt_gmatch(const char *, const char *); 575 extern char *dt_basename(char *); 576 577 extern ulong_t dt_popc(ulong_t); 578 extern ulong_t dt_popcb(const ulong_t *, ulong_t); 579 580 extern int dt_buffered_enable(dtrace_hdl_t *); 581 extern int dt_buffered_flush(dtrace_hdl_t *, dtrace_probedata_t *, 582 const dtrace_recdesc_t *, const dtrace_aggdata_t *, uint32_t flags); 583 extern void dt_buffered_disable(dtrace_hdl_t *); 584 extern void dt_buffered_destroy(dtrace_hdl_t *); 585 586 extern uint64_t dt_stddev(uint64_t *, uint64_t); 587 588 extern int dt_options_load(dtrace_hdl_t *); 589 590 extern void dt_dprintf(const char *, ...); 591 592 extern void dt_setcontext(dtrace_hdl_t *, dtrace_probedesc_t *); 593 extern void dt_endcontext(dtrace_hdl_t *); 594 595 extern void dt_pragma(dt_node_t *); 596 extern int dt_reduce(dtrace_hdl_t *, dt_version_t); 597 extern void dt_cg(dt_pcb_t *, dt_node_t *); 598 extern dtrace_difo_t *dt_as(dt_pcb_t *); 599 extern void dt_dis(const dtrace_difo_t *, FILE *); 600 601 extern int dt_aggregate_go(dtrace_hdl_t *); 602 extern int dt_aggregate_init(dtrace_hdl_t *); 603 extern void dt_aggregate_destroy(dtrace_hdl_t *); 604 605 extern int dt_epid_lookup(dtrace_hdl_t *, dtrace_epid_t, 606 dtrace_eprobedesc_t **, dtrace_probedesc_t **); 607 extern void dt_epid_destroy(dtrace_hdl_t *); 608 extern int dt_aggid_lookup(dtrace_hdl_t *, dtrace_aggid_t, dtrace_aggdesc_t **); 609 extern void dt_aggid_destroy(dtrace_hdl_t *); 610 611 extern void *dt_format_lookup(dtrace_hdl_t *, int); 612 extern void dt_format_destroy(dtrace_hdl_t *); 613 614 extern const char *dt_strdata_lookup(dtrace_hdl_t *, int); 615 extern void dt_strdata_destroy(dtrace_hdl_t *); 616 617 extern int dt_print_quantize(dtrace_hdl_t *, FILE *, 618 const void *, size_t, uint64_t); 619 extern int dt_print_lquantize(dtrace_hdl_t *, FILE *, 620 const void *, size_t, uint64_t); 621 extern int dt_print_llquantize(dtrace_hdl_t *, FILE *, 622 const void *, size_t, uint64_t); 623 extern int dt_print_agg(const dtrace_aggdata_t *, void *); 624 625 extern int dt_handle(dtrace_hdl_t *, dtrace_probedata_t *); 626 extern int dt_handle_liberr(dtrace_hdl_t *, 627 const dtrace_probedata_t *, const char *); 628 extern int dt_handle_cpudrop(dtrace_hdl_t *, processorid_t, 629 dtrace_dropkind_t, uint64_t); 630 extern int dt_handle_status(dtrace_hdl_t *, 631 dtrace_status_t *, dtrace_status_t *); 632 extern int dt_handle_setopt(dtrace_hdl_t *, dtrace_setoptdata_t *); 633 634 extern int dt_lib_depend_add(dtrace_hdl_t *, dt_list_t *, const char *); 635 extern dt_lib_depend_t *dt_lib_depend_lookup(dt_list_t *, const char *); 636 637 extern dt_pcb_t *yypcb; /* pointer to current parser control block */ 638 extern char yyintprefix; /* int token prefix for macros (+/-) */ 639 extern char yyintsuffix[4]; /* int token suffix ([uUlL]*) */ 640 extern int yyintdecimal; /* int token is decimal (1) or octal/hex (0) */ 641 extern char yytext[]; /* lex input buffer */ 642 extern int yylineno; /* lex line number */ 643 extern int yydebug; /* lex debugging */ 644 extern dt_node_t *yypragma; /* lex token list for control lines */ 645 646 extern const dtrace_attribute_t _dtrace_maxattr; /* maximum attributes */ 647 extern const dtrace_attribute_t _dtrace_defattr; /* default attributes */ 648 extern const dtrace_attribute_t _dtrace_symattr; /* symbol ref attributes */ 649 extern const dtrace_attribute_t _dtrace_typattr; /* type ref attributes */ 650 extern const dtrace_attribute_t _dtrace_prvattr; /* provider attributes */ 651 extern const dtrace_pattr_t _dtrace_prvdesc; /* provider attribute bundle */ 652 653 extern const dt_version_t _dtrace_versions[]; /* array of valid versions */ 654 extern const char *const _dtrace_version; /* current version string */ 655 656 extern int _dtrace_strbuckets; /* number of hash buckets for strings */ 657 extern int _dtrace_intbuckets; /* number of hash buckets for ints */ 658 extern uint_t _dtrace_stkindent; /* default indent for stack/ustack */ 659 extern uint_t _dtrace_pidbuckets; /* number of hash buckets for pids */ 660 extern uint_t _dtrace_pidlrulim; /* number of proc handles to cache */ 661 extern int _dtrace_debug; /* debugging messages enabled */ 662 extern size_t _dtrace_bufsize; /* default dt_buf_create() size */ 663 extern int _dtrace_argmax; /* default maximum probe arguments */ 664 665 extern const char *_dtrace_libdir; /* default library directory */ 666 extern const char *_dtrace_moddir; /* default kernel module directory */ 667 668 #ifdef __cplusplus 669 } 670 #endif 671 672 #endif /* _DT_IMPL_H */ 673