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