1 /*
2 * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
3 *
4 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation;
8 * version 2.1 of the License (not later!)
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this program; if not, see <http://www.gnu.org/licenses>
17 *
18 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
19 */
20 #ifndef _PARSE_EVENTS_H
21 #define _PARSE_EVENTS_H
22
23 #include <stdarg.h>
24 #include <regex.h>
25
26 #ifndef __maybe_unused
27 #define __maybe_unused __attribute__((unused))
28 #endif
29
30 /* ----------------------- trace_seq ----------------------- */
31
32
33 #ifndef TRACE_SEQ_BUF_SIZE
34 #define TRACE_SEQ_BUF_SIZE 4096
35 #endif
36
37 #ifndef DEBUG_RECORD
38 #define DEBUG_RECORD 0
39 #endif
40
41 struct pevent_record {
42 unsigned long long ts;
43 unsigned long long offset;
44 long long missed_events; /* buffer dropped events before */
45 int record_size; /* size of binary record */
46 int size; /* size of data */
47 void *data;
48 int cpu;
49 int ref_count;
50 int locked; /* Do not free, even if ref_count is zero */
51 void *priv;
52 #if DEBUG_RECORD
53 struct pevent_record *prev;
54 struct pevent_record *next;
55 long alloc_addr;
56 #endif
57 };
58
59 /*
60 * Trace sequences are used to allow a function to call several other functions
61 * to create a string of data to use (up to a max of PAGE_SIZE).
62 */
63
64 struct trace_seq {
65 char *buffer;
66 unsigned int buffer_size;
67 unsigned int len;
68 unsigned int readpos;
69 };
70
71 void trace_seq_init(struct trace_seq *s);
72 void trace_seq_reset(struct trace_seq *s);
73 void trace_seq_destroy(struct trace_seq *s);
74
75 extern int trace_seq_printf(struct trace_seq *s, const char *fmt, ...)
76 __attribute__ ((format (printf, 2, 3)));
77 extern int trace_seq_vprintf(struct trace_seq *s, const char *fmt, va_list args)
78 __attribute__ ((format (printf, 2, 0)));
79
80 extern int trace_seq_puts(struct trace_seq *s, const char *str);
81 extern int trace_seq_putc(struct trace_seq *s, unsigned char c);
82
83 extern void trace_seq_terminate(struct trace_seq *s);
84
85 extern int trace_seq_do_printf(struct trace_seq *s);
86
87
88 /* ----------------------- pevent ----------------------- */
89
90 struct pevent;
91 struct event_format;
92
93 typedef int (*pevent_event_handler_func)(struct trace_seq *s,
94 struct pevent_record *record,
95 struct event_format *event,
96 void *context);
97
98 typedef int (*pevent_plugin_load_func)(struct pevent *pevent);
99 typedef int (*pevent_plugin_unload_func)(void);
100
101 struct plugin_option {
102 struct plugin_option *next;
103 void *handle;
104 char *file;
105 char *name;
106 char *plugin_alias;
107 char *description;
108 char *value;
109 void *priv;
110 int set;
111 };
112
113 /*
114 * Plugin hooks that can be called:
115 *
116 * PEVENT_PLUGIN_LOADER: (required)
117 * The function name to initialized the plugin.
118 *
119 * int PEVENT_PLUGIN_LOADER(struct pevent *pevent)
120 *
121 * PEVENT_PLUGIN_UNLOADER: (optional)
122 * The function called just before unloading
123 *
124 * int PEVENT_PLUGIN_UNLOADER(void)
125 *
126 * PEVENT_PLUGIN_OPTIONS: (optional)
127 * Plugin options that can be set before loading
128 *
129 * struct plugin_option PEVENT_PLUGIN_OPTIONS[] = {
130 * {
131 * .name = "option-name",
132 * .plugin_alias = "overide-file-name", (optional)
133 * .description = "description of option to show users",
134 * },
135 * {
136 * .name = NULL,
137 * },
138 * };
139 *
140 * Array must end with .name = NULL;
141 *
142 *
143 * .plugin_alias is used to give a shorter name to access
144 * the vairable. Useful if a plugin handles more than one event.
145 *
146 * PEVENT_PLUGIN_ALIAS: (optional)
147 * The name to use for finding options (uses filename if not defined)
148 */
149 #define PEVENT_PLUGIN_LOADER pevent_plugin_loader
150 #define PEVENT_PLUGIN_UNLOADER pevent_plugin_unloader
151 #define PEVENT_PLUGIN_OPTIONS pevent_plugin_options
152 #define PEVENT_PLUGIN_ALIAS pevent_plugin_alias
153 #define _MAKE_STR(x) #x
154 #define MAKE_STR(x) _MAKE_STR(x)
155 #define PEVENT_PLUGIN_LOADER_NAME MAKE_STR(PEVENT_PLUGIN_LOADER)
156 #define PEVENT_PLUGIN_UNLOADER_NAME MAKE_STR(PEVENT_PLUGIN_UNLOADER)
157 #define PEVENT_PLUGIN_OPTIONS_NAME MAKE_STR(PEVENT_PLUGIN_OPTIONS)
158 #define PEVENT_PLUGIN_ALIAS_NAME MAKE_STR(PEVENT_PLUGIN_ALIAS)
159
160 #define NSECS_PER_SEC 1000000000ULL
161 #define NSECS_PER_USEC 1000ULL
162
163 enum format_flags {
164 FIELD_IS_ARRAY = 1,
165 FIELD_IS_POINTER = 2,
166 FIELD_IS_SIGNED = 4,
167 FIELD_IS_STRING = 8,
168 FIELD_IS_DYNAMIC = 16,
169 FIELD_IS_LONG = 32,
170 FIELD_IS_FLAG = 64,
171 FIELD_IS_SYMBOLIC = 128,
172 };
173
174 struct format_field {
175 struct format_field *next;
176 struct event_format *event;
177 char *type;
178 char *name;
179 int offset;
180 int size;
181 unsigned int arraylen;
182 unsigned int elementsize;
183 unsigned long flags;
184 };
185
186 struct format {
187 int nr_common;
188 int nr_fields;
189 struct format_field *common_fields;
190 struct format_field *fields;
191 };
192
193 struct print_arg_atom {
194 char *atom;
195 };
196
197 struct print_arg_string {
198 char *string;
199 int offset;
200 };
201
202 struct print_arg_field {
203 char *name;
204 struct format_field *field;
205 };
206
207 struct print_flag_sym {
208 struct print_flag_sym *next;
209 char *value;
210 char *str;
211 };
212
213 struct print_arg_typecast {
214 char *type;
215 struct print_arg *item;
216 };
217
218 struct print_arg_flags {
219 struct print_arg *field;
220 char *delim;
221 struct print_flag_sym *flags;
222 };
223
224 struct print_arg_symbol {
225 struct print_arg *field;
226 struct print_flag_sym *symbols;
227 };
228
229 struct print_arg_hex {
230 struct print_arg *field;
231 struct print_arg *size;
232 };
233
234 struct print_arg_dynarray {
235 struct format_field *field;
236 struct print_arg *index;
237 };
238
239 struct print_arg;
240
241 struct print_arg_op {
242 char *op;
243 int prio;
244 struct print_arg *left;
245 struct print_arg *right;
246 };
247
248 struct pevent_function_handler;
249
250 struct print_arg_func {
251 struct pevent_function_handler *func;
252 struct print_arg *args;
253 };
254
255 enum print_arg_type {
256 PRINT_NULL,
257 PRINT_ATOM,
258 PRINT_FIELD,
259 PRINT_FLAGS,
260 PRINT_SYMBOL,
261 PRINT_HEX,
262 PRINT_TYPE,
263 PRINT_STRING,
264 PRINT_BSTRING,
265 PRINT_DYNAMIC_ARRAY,
266 PRINT_OP,
267 PRINT_FUNC,
268 };
269
270 struct print_arg {
271 struct print_arg *next;
272 enum print_arg_type type;
273 union {
274 struct print_arg_atom atom;
275 struct print_arg_field field;
276 struct print_arg_typecast typecast;
277 struct print_arg_flags flags;
278 struct print_arg_symbol symbol;
279 struct print_arg_hex hex;
280 struct print_arg_func func;
281 struct print_arg_string string;
282 struct print_arg_op op;
283 struct print_arg_dynarray dynarray;
284 };
285 };
286
287 struct print_fmt {
288 char *format;
289 struct print_arg *args;
290 };
291
292 struct event_format {
293 struct pevent *pevent;
294 char *name;
295 int id;
296 int flags;
297 struct format format;
298 struct print_fmt print_fmt;
299 char *system;
300 pevent_event_handler_func handler;
301 void *context;
302 };
303
304 enum {
305 EVENT_FL_ISFTRACE = 0x01,
306 EVENT_FL_ISPRINT = 0x02,
307 EVENT_FL_ISBPRINT = 0x04,
308 EVENT_FL_ISFUNCENT = 0x10,
309 EVENT_FL_ISFUNCRET = 0x20,
310
311 EVENT_FL_FAILED = 0x80000000
312 };
313
314 enum event_sort_type {
315 EVENT_SORT_ID,
316 EVENT_SORT_NAME,
317 EVENT_SORT_SYSTEM,
318 };
319
320 enum event_type {
321 EVENT_ERROR,
322 EVENT_NONE,
323 EVENT_SPACE,
324 EVENT_NEWLINE,
325 EVENT_OP,
326 EVENT_DELIM,
327 EVENT_ITEM,
328 EVENT_DQUOTE,
329 EVENT_SQUOTE,
330 };
331
332 typedef unsigned long long (*pevent_func_handler)(struct trace_seq *s,
333 unsigned long long *args);
334
335 enum pevent_func_arg_type {
336 PEVENT_FUNC_ARG_VOID,
337 PEVENT_FUNC_ARG_INT,
338 PEVENT_FUNC_ARG_LONG,
339 PEVENT_FUNC_ARG_STRING,
340 PEVENT_FUNC_ARG_PTR,
341 PEVENT_FUNC_ARG_MAX_TYPES
342 };
343
344 enum pevent_flag {
345 PEVENT_NSEC_OUTPUT = 1, /* output in NSECS */
346 };
347
348 #define PEVENT_ERRORS \
349 _PE(MEM_ALLOC_FAILED, "failed to allocate memory"), \
350 _PE(PARSE_EVENT_FAILED, "failed to parse event"), \
351 _PE(READ_ID_FAILED, "failed to read event id"), \
352 _PE(READ_FORMAT_FAILED, "failed to read event format"), \
353 _PE(READ_PRINT_FAILED, "failed to read event print fmt"), \
354 _PE(OLD_FTRACE_ARG_FAILED,"failed to allocate field name for ftrace"),\
355 _PE(INVALID_ARG_TYPE, "invalid argument type")
356
357 #undef _PE
358 #define _PE(__code, __str) PEVENT_ERRNO__ ## __code
359 enum pevent_errno {
360 PEVENT_ERRNO__SUCCESS = 0,
361
362 /*
363 * Choose an arbitrary negative big number not to clash with standard
364 * errno since SUS requires the errno has distinct positive values.
365 * See 'Issue 6' in the link below.
366 *
367 * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html
368 */
369 __PEVENT_ERRNO__START = -100000,
370
371 PEVENT_ERRORS,
372
373 __PEVENT_ERRNO__END,
374 };
375 #undef _PE
376
377 struct cmdline;
378 struct cmdline_list;
379 struct func_map;
380 struct func_list;
381 struct event_handler;
382
383 struct pevent {
384 int ref_count;
385
386 int header_page_ts_offset;
387 int header_page_ts_size;
388 int header_page_size_offset;
389 int header_page_size_size;
390 int header_page_data_offset;
391 int header_page_data_size;
392 int header_page_overwrite;
393
394 int file_bigendian;
395 int host_bigendian;
396
397 int latency_format;
398
399 int old_format;
400
401 int cpus;
402 int long_size;
403 int page_size;
404
405 struct cmdline *cmdlines;
406 struct cmdline_list *cmdlist;
407 int cmdline_count;
408
409 struct func_map *func_map;
410 struct func_list *funclist;
411 unsigned int func_count;
412
413 struct printk_map *printk_map;
414 struct printk_list *printklist;
415 unsigned int printk_count;
416
417
418 struct event_format **events;
419 int nr_events;
420 struct event_format **sort_events;
421 enum event_sort_type last_type;
422
423 int type_offset;
424 int type_size;
425
426 int pid_offset;
427 int pid_size;
428
429 int pc_offset;
430 int pc_size;
431
432 int flags_offset;
433 int flags_size;
434
435 int ld_offset;
436 int ld_size;
437
438 int print_raw;
439
440 int test_filters;
441
442 int flags;
443
444 struct format_field *bprint_ip_field;
445 struct format_field *bprint_fmt_field;
446 struct format_field *bprint_buf_field;
447
448 struct event_handler *handlers;
449 struct pevent_function_handler *func_handlers;
450
451 /* cache */
452 struct event_format *last_event;
453 };
454
pevent_set_flag(struct pevent * pevent,int flag)455 static inline void pevent_set_flag(struct pevent *pevent, int flag)
456 {
457 pevent->flags |= flag;
458 }
459
460 static inline unsigned short
__data2host2(struct pevent * pevent,unsigned short data)461 __data2host2(struct pevent *pevent, unsigned short data)
462 {
463 unsigned short swap;
464
465 if (pevent->host_bigendian == pevent->file_bigendian)
466 return data;
467
468 swap = ((data & 0xffULL) << 8) |
469 ((data & (0xffULL << 8)) >> 8);
470
471 return swap;
472 }
473
474 static inline unsigned int
__data2host4(struct pevent * pevent,unsigned int data)475 __data2host4(struct pevent *pevent, unsigned int data)
476 {
477 unsigned int swap;
478
479 if (pevent->host_bigendian == pevent->file_bigendian)
480 return data;
481
482 swap = ((data & 0xffULL) << 24) |
483 ((data & (0xffULL << 8)) << 8) |
484 ((data & (0xffULL << 16)) >> 8) |
485 ((data & (0xffULL << 24)) >> 24);
486
487 return swap;
488 }
489
490 static inline unsigned long long
__data2host8(struct pevent * pevent,unsigned long long data)491 __data2host8(struct pevent *pevent, unsigned long long data)
492 {
493 unsigned long long swap;
494
495 if (pevent->host_bigendian == pevent->file_bigendian)
496 return data;
497
498 swap = ((data & 0xffULL) << 56) |
499 ((data & (0xffULL << 8)) << 40) |
500 ((data & (0xffULL << 16)) << 24) |
501 ((data & (0xffULL << 24)) << 8) |
502 ((data & (0xffULL << 32)) >> 8) |
503 ((data & (0xffULL << 40)) >> 24) |
504 ((data & (0xffULL << 48)) >> 40) |
505 ((data & (0xffULL << 56)) >> 56);
506
507 return swap;
508 }
509
510 #define data2host2(pevent, ptr) __data2host2(pevent, *(unsigned short *)(ptr))
511 #define data2host4(pevent, ptr) __data2host4(pevent, *(unsigned int *)(ptr))
512 #define data2host8(pevent, ptr) \
513 ({ \
514 unsigned long long __val; \
515 \
516 memcpy(&__val, (ptr), sizeof(unsigned long long)); \
517 __data2host8(pevent, __val); \
518 })
519
520 /* taken from kernel/trace/trace.h */
521 enum trace_flag_type {
522 TRACE_FLAG_IRQS_OFF = 0x01,
523 TRACE_FLAG_IRQS_NOSUPPORT = 0x02,
524 TRACE_FLAG_NEED_RESCHED = 0x04,
525 TRACE_FLAG_HARDIRQ = 0x08,
526 TRACE_FLAG_SOFTIRQ = 0x10,
527 };
528
529 int pevent_register_comm(struct pevent *pevent, const char *comm, int pid);
530 int pevent_register_function(struct pevent *pevent, char *name,
531 unsigned long long addr, char *mod);
532 int pevent_register_print_string(struct pevent *pevent, char *fmt,
533 unsigned long long addr);
534 int pevent_pid_is_registered(struct pevent *pevent, int pid);
535
536 void pevent_print_event(struct pevent *pevent, struct trace_seq *s,
537 struct pevent_record *record);
538
539 int pevent_parse_header_page(struct pevent *pevent, char *buf, unsigned long size,
540 int long_size);
541
542 enum pevent_errno pevent_parse_event(struct pevent *pevent, const char *buf,
543 unsigned long size, const char *sys);
544 enum pevent_errno pevent_parse_format(struct event_format **eventp, const char *buf,
545 unsigned long size, const char *sys);
546 void pevent_free_format(struct event_format *event);
547
548 void *pevent_get_field_raw(struct trace_seq *s, struct event_format *event,
549 const char *name, struct pevent_record *record,
550 int *len, int err);
551
552 int pevent_get_field_val(struct trace_seq *s, struct event_format *event,
553 const char *name, struct pevent_record *record,
554 unsigned long long *val, int err);
555 int pevent_get_common_field_val(struct trace_seq *s, struct event_format *event,
556 const char *name, struct pevent_record *record,
557 unsigned long long *val, int err);
558 int pevent_get_any_field_val(struct trace_seq *s, struct event_format *event,
559 const char *name, struct pevent_record *record,
560 unsigned long long *val, int err);
561
562 int pevent_print_num_field(struct trace_seq *s, const char *fmt,
563 struct event_format *event, const char *name,
564 struct pevent_record *record, int err);
565
566 int pevent_register_event_handler(struct pevent *pevent, int id,
567 const char *sys_name, const char *event_name,
568 pevent_event_handler_func func, void *context);
569 int pevent_register_print_function(struct pevent *pevent,
570 pevent_func_handler func,
571 enum pevent_func_arg_type ret_type,
572 char *name, ...);
573
574 struct format_field *pevent_find_common_field(struct event_format *event, const char *name);
575 struct format_field *pevent_find_field(struct event_format *event, const char *name);
576 struct format_field *pevent_find_any_field(struct event_format *event, const char *name);
577
578 const char *pevent_find_function(struct pevent *pevent, unsigned long long addr);
579 unsigned long long
580 pevent_find_function_address(struct pevent *pevent, unsigned long long addr);
581 unsigned long long pevent_read_number(struct pevent *pevent, const void *ptr, int size);
582 int pevent_read_number_field(struct format_field *field, const void *data,
583 unsigned long long *value);
584
585 struct event_format *pevent_find_event(struct pevent *pevent, int id);
586
587 struct event_format *
588 pevent_find_event_by_name(struct pevent *pevent, const char *sys, const char *name);
589
590 void pevent_data_lat_fmt(struct pevent *pevent,
591 struct trace_seq *s, struct pevent_record *record);
592 int pevent_data_type(struct pevent *pevent, struct pevent_record *rec);
593 struct event_format *pevent_data_event_from_type(struct pevent *pevent, int type);
594 int pevent_data_pid(struct pevent *pevent, struct pevent_record *rec);
595 const char *pevent_data_comm_from_pid(struct pevent *pevent, int pid);
596 void pevent_event_info(struct trace_seq *s, struct event_format *event,
597 struct pevent_record *record);
598 int pevent_strerror(struct pevent *pevent, enum pevent_errno errnum,
599 char *buf, size_t buflen);
600
601 struct event_format **pevent_list_events(struct pevent *pevent, enum event_sort_type);
602 struct format_field **pevent_event_common_fields(struct event_format *event);
603 struct format_field **pevent_event_fields(struct event_format *event);
604
pevent_get_cpus(struct pevent * pevent)605 static inline int pevent_get_cpus(struct pevent *pevent)
606 {
607 return pevent->cpus;
608 }
609
pevent_set_cpus(struct pevent * pevent,int cpus)610 static inline void pevent_set_cpus(struct pevent *pevent, int cpus)
611 {
612 pevent->cpus = cpus;
613 }
614
pevent_get_long_size(struct pevent * pevent)615 static inline int pevent_get_long_size(struct pevent *pevent)
616 {
617 return pevent->long_size;
618 }
619
pevent_set_long_size(struct pevent * pevent,int long_size)620 static inline void pevent_set_long_size(struct pevent *pevent, int long_size)
621 {
622 pevent->long_size = long_size;
623 }
624
pevent_get_page_size(struct pevent * pevent)625 static inline int pevent_get_page_size(struct pevent *pevent)
626 {
627 return pevent->page_size;
628 }
629
pevent_set_page_size(struct pevent * pevent,int _page_size)630 static inline void pevent_set_page_size(struct pevent *pevent, int _page_size)
631 {
632 pevent->page_size = _page_size;
633 }
634
pevent_is_file_bigendian(struct pevent * pevent)635 static inline int pevent_is_file_bigendian(struct pevent *pevent)
636 {
637 return pevent->file_bigendian;
638 }
639
pevent_set_file_bigendian(struct pevent * pevent,int endian)640 static inline void pevent_set_file_bigendian(struct pevent *pevent, int endian)
641 {
642 pevent->file_bigendian = endian;
643 }
644
pevent_is_host_bigendian(struct pevent * pevent)645 static inline int pevent_is_host_bigendian(struct pevent *pevent)
646 {
647 return pevent->host_bigendian;
648 }
649
pevent_set_host_bigendian(struct pevent * pevent,int endian)650 static inline void pevent_set_host_bigendian(struct pevent *pevent, int endian)
651 {
652 pevent->host_bigendian = endian;
653 }
654
pevent_is_latency_format(struct pevent * pevent)655 static inline int pevent_is_latency_format(struct pevent *pevent)
656 {
657 return pevent->latency_format;
658 }
659
pevent_set_latency_format(struct pevent * pevent,int lat)660 static inline void pevent_set_latency_format(struct pevent *pevent, int lat)
661 {
662 pevent->latency_format = lat;
663 }
664
665 struct pevent *pevent_alloc(void);
666 void pevent_free(struct pevent *pevent);
667 void pevent_ref(struct pevent *pevent);
668 void pevent_unref(struct pevent *pevent);
669
670 /* access to the internal parser */
671 void pevent_buffer_init(const char *buf, unsigned long long size);
672 enum event_type pevent_read_token(char **tok);
673 void pevent_free_token(char *token);
674 int pevent_peek_char(void);
675 const char *pevent_get_input_buf(void);
676 unsigned long long pevent_get_input_buf_ptr(void);
677
678 /* for debugging */
679 void pevent_print_funcs(struct pevent *pevent);
680 void pevent_print_printk(struct pevent *pevent);
681
682 /* ----------------------- filtering ----------------------- */
683
684 enum filter_boolean_type {
685 FILTER_FALSE,
686 FILTER_TRUE,
687 };
688
689 enum filter_op_type {
690 FILTER_OP_AND = 1,
691 FILTER_OP_OR,
692 FILTER_OP_NOT,
693 };
694
695 enum filter_cmp_type {
696 FILTER_CMP_NONE,
697 FILTER_CMP_EQ,
698 FILTER_CMP_NE,
699 FILTER_CMP_GT,
700 FILTER_CMP_LT,
701 FILTER_CMP_GE,
702 FILTER_CMP_LE,
703 FILTER_CMP_MATCH,
704 FILTER_CMP_NOT_MATCH,
705 FILTER_CMP_REGEX,
706 FILTER_CMP_NOT_REGEX,
707 };
708
709 enum filter_exp_type {
710 FILTER_EXP_NONE,
711 FILTER_EXP_ADD,
712 FILTER_EXP_SUB,
713 FILTER_EXP_MUL,
714 FILTER_EXP_DIV,
715 FILTER_EXP_MOD,
716 FILTER_EXP_RSHIFT,
717 FILTER_EXP_LSHIFT,
718 FILTER_EXP_AND,
719 FILTER_EXP_OR,
720 FILTER_EXP_XOR,
721 FILTER_EXP_NOT,
722 };
723
724 enum filter_arg_type {
725 FILTER_ARG_NONE,
726 FILTER_ARG_BOOLEAN,
727 FILTER_ARG_VALUE,
728 FILTER_ARG_FIELD,
729 FILTER_ARG_EXP,
730 FILTER_ARG_OP,
731 FILTER_ARG_NUM,
732 FILTER_ARG_STR,
733 };
734
735 enum filter_value_type {
736 FILTER_NUMBER,
737 FILTER_STRING,
738 FILTER_CHAR
739 };
740
741 struct fliter_arg;
742
743 struct filter_arg_boolean {
744 enum filter_boolean_type value;
745 };
746
747 struct filter_arg_field {
748 struct format_field *field;
749 };
750
751 struct filter_arg_value {
752 enum filter_value_type type;
753 union {
754 char *str;
755 unsigned long long val;
756 };
757 };
758
759 struct filter_arg_op {
760 enum filter_op_type type;
761 struct filter_arg *left;
762 struct filter_arg *right;
763 };
764
765 struct filter_arg_exp {
766 enum filter_exp_type type;
767 struct filter_arg *left;
768 struct filter_arg *right;
769 };
770
771 struct filter_arg_num {
772 enum filter_cmp_type type;
773 struct filter_arg *left;
774 struct filter_arg *right;
775 };
776
777 struct filter_arg_str {
778 enum filter_cmp_type type;
779 struct format_field *field;
780 char *val;
781 char *buffer;
782 regex_t reg;
783 };
784
785 struct filter_arg {
786 enum filter_arg_type type;
787 union {
788 struct filter_arg_boolean boolean;
789 struct filter_arg_field field;
790 struct filter_arg_value value;
791 struct filter_arg_op op;
792 struct filter_arg_exp exp;
793 struct filter_arg_num num;
794 struct filter_arg_str str;
795 };
796 };
797
798 struct filter_type {
799 int event_id;
800 struct event_format *event;
801 struct filter_arg *filter;
802 };
803
804 struct event_filter {
805 struct pevent *pevent;
806 int filters;
807 struct filter_type *event_filters;
808 };
809
810 struct event_filter *pevent_filter_alloc(struct pevent *pevent);
811
812 #define FILTER_NONE -2
813 #define FILTER_NOEXIST -1
814 #define FILTER_MISS 0
815 #define FILTER_MATCH 1
816
817 enum filter_trivial_type {
818 FILTER_TRIVIAL_FALSE,
819 FILTER_TRIVIAL_TRUE,
820 FILTER_TRIVIAL_BOTH,
821 };
822
823 int pevent_filter_add_filter_str(struct event_filter *filter,
824 const char *filter_str,
825 char **error_str);
826
827
828 int pevent_filter_match(struct event_filter *filter,
829 struct pevent_record *record);
830
831 int pevent_event_filtered(struct event_filter *filter,
832 int event_id);
833
834 void pevent_filter_reset(struct event_filter *filter);
835
836 void pevent_filter_clear_trivial(struct event_filter *filter,
837 enum filter_trivial_type type);
838
839 void pevent_filter_free(struct event_filter *filter);
840
841 char *pevent_filter_make_string(struct event_filter *filter, int event_id);
842
843 int pevent_filter_remove_event(struct event_filter *filter,
844 int event_id);
845
846 int pevent_filter_event_has_trivial(struct event_filter *filter,
847 int event_id,
848 enum filter_trivial_type type);
849
850 int pevent_filter_copy(struct event_filter *dest, struct event_filter *source);
851
852 int pevent_update_trivial(struct event_filter *dest, struct event_filter *source,
853 enum filter_trivial_type type);
854
855 int pevent_filter_compare(struct event_filter *filter1, struct event_filter *filter2);
856
857 #endif /* _PARSE_EVENTS_H */
858