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