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f7d82350 SR |
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, write to the Free Software | |
17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 | * | |
19 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
20 | * | |
21 | * The parts for function graph printing was taken and modified from the | |
22 | * Linux Kernel that were written by | |
23 | * - Copyright (C) 2009 Frederic Weisbecker, | |
24 | * Frederic Weisbecker gave his permission to relicense the code to | |
25 | * the Lesser General Public License. | |
26 | */ | |
27 | #define _GNU_SOURCE | |
28 | #include <stdio.h> | |
29 | #include <stdlib.h> | |
30 | #include <string.h> | |
31 | #include <stdarg.h> | |
32 | #include <ctype.h> | |
33 | #include <errno.h> | |
34 | ||
35 | #include "event-parse.h" | |
668fe01f | 36 | #include "event-utils.h" |
f7d82350 SR |
37 | |
38 | static const char *input_buf; | |
39 | static unsigned long long input_buf_ptr; | |
40 | static unsigned long long input_buf_siz; | |
41 | ||
5205aec9 TZ |
42 | static int is_flag_field; |
43 | static int is_symbolic_field; | |
44 | ||
f7d82350 SR |
45 | static int show_warning = 1; |
46 | ||
47 | #define do_warning(fmt, ...) \ | |
48 | do { \ | |
49 | if (show_warning) \ | |
50 | warning(fmt, ##__VA_ARGS__); \ | |
51 | } while (0) | |
52 | ||
53 | static void init_input_buf(const char *buf, unsigned long long size) | |
54 | { | |
55 | input_buf = buf; | |
56 | input_buf_siz = size; | |
57 | input_buf_ptr = 0; | |
58 | } | |
59 | ||
60 | const char *pevent_get_input_buf(void) | |
61 | { | |
62 | return input_buf; | |
63 | } | |
64 | ||
65 | unsigned long long pevent_get_input_buf_ptr(void) | |
66 | { | |
67 | return input_buf_ptr; | |
68 | } | |
69 | ||
70 | struct event_handler { | |
71 | struct event_handler *next; | |
72 | int id; | |
73 | const char *sys_name; | |
74 | const char *event_name; | |
75 | pevent_event_handler_func func; | |
76 | void *context; | |
77 | }; | |
78 | ||
79 | struct pevent_func_params { | |
80 | struct pevent_func_params *next; | |
81 | enum pevent_func_arg_type type; | |
82 | }; | |
83 | ||
84 | struct pevent_function_handler { | |
85 | struct pevent_function_handler *next; | |
86 | enum pevent_func_arg_type ret_type; | |
87 | char *name; | |
88 | pevent_func_handler func; | |
89 | struct pevent_func_params *params; | |
90 | int nr_args; | |
91 | }; | |
92 | ||
93 | static unsigned long long | |
94 | process_defined_func(struct trace_seq *s, void *data, int size, | |
95 | struct event_format *event, struct print_arg *arg); | |
96 | ||
97 | static void free_func_handle(struct pevent_function_handler *func); | |
98 | ||
99 | /** | |
100 | * pevent_buffer_init - init buffer for parsing | |
101 | * @buf: buffer to parse | |
102 | * @size: the size of the buffer | |
103 | * | |
104 | * For use with pevent_read_token(), this initializes the internal | |
105 | * buffer that pevent_read_token() will parse. | |
106 | */ | |
107 | void pevent_buffer_init(const char *buf, unsigned long long size) | |
108 | { | |
109 | init_input_buf(buf, size); | |
110 | } | |
111 | ||
112 | void breakpoint(void) | |
113 | { | |
114 | static int x; | |
115 | x++; | |
116 | } | |
117 | ||
118 | struct print_arg *alloc_arg(void) | |
119 | { | |
120 | struct print_arg *arg; | |
121 | ||
122 | arg = malloc_or_die(sizeof(*arg)); | |
123 | if (!arg) | |
124 | return NULL; | |
125 | memset(arg, 0, sizeof(*arg)); | |
126 | ||
127 | return arg; | |
128 | } | |
129 | ||
130 | struct cmdline { | |
131 | char *comm; | |
132 | int pid; | |
133 | }; | |
134 | ||
135 | static int cmdline_cmp(const void *a, const void *b) | |
136 | { | |
137 | const struct cmdline *ca = a; | |
138 | const struct cmdline *cb = b; | |
139 | ||
140 | if (ca->pid < cb->pid) | |
141 | return -1; | |
142 | if (ca->pid > cb->pid) | |
143 | return 1; | |
144 | ||
145 | return 0; | |
146 | } | |
147 | ||
148 | struct cmdline_list { | |
149 | struct cmdline_list *next; | |
150 | char *comm; | |
151 | int pid; | |
152 | }; | |
153 | ||
154 | static int cmdline_init(struct pevent *pevent) | |
155 | { | |
156 | struct cmdline_list *cmdlist = pevent->cmdlist; | |
157 | struct cmdline_list *item; | |
158 | struct cmdline *cmdlines; | |
159 | int i; | |
160 | ||
161 | cmdlines = malloc_or_die(sizeof(*cmdlines) * pevent->cmdline_count); | |
162 | ||
163 | i = 0; | |
164 | while (cmdlist) { | |
165 | cmdlines[i].pid = cmdlist->pid; | |
166 | cmdlines[i].comm = cmdlist->comm; | |
167 | i++; | |
168 | item = cmdlist; | |
169 | cmdlist = cmdlist->next; | |
170 | free(item); | |
171 | } | |
172 | ||
173 | qsort(cmdlines, pevent->cmdline_count, sizeof(*cmdlines), cmdline_cmp); | |
174 | ||
175 | pevent->cmdlines = cmdlines; | |
176 | pevent->cmdlist = NULL; | |
177 | ||
178 | return 0; | |
179 | } | |
180 | ||
181 | static char *find_cmdline(struct pevent *pevent, int pid) | |
182 | { | |
183 | const struct cmdline *comm; | |
184 | struct cmdline key; | |
185 | ||
186 | if (!pid) | |
187 | return "<idle>"; | |
188 | ||
189 | if (!pevent->cmdlines) | |
190 | cmdline_init(pevent); | |
191 | ||
192 | key.pid = pid; | |
193 | ||
194 | comm = bsearch(&key, pevent->cmdlines, pevent->cmdline_count, | |
195 | sizeof(*pevent->cmdlines), cmdline_cmp); | |
196 | ||
197 | if (comm) | |
198 | return comm->comm; | |
199 | return "<...>"; | |
200 | } | |
201 | ||
202 | /** | |
203 | * pevent_pid_is_registered - return if a pid has a cmdline registered | |
204 | * @pevent: handle for the pevent | |
205 | * @pid: The pid to check if it has a cmdline registered with. | |
206 | * | |
207 | * Returns 1 if the pid has a cmdline mapped to it | |
208 | * 0 otherwise. | |
209 | */ | |
210 | int pevent_pid_is_registered(struct pevent *pevent, int pid) | |
211 | { | |
212 | const struct cmdline *comm; | |
213 | struct cmdline key; | |
214 | ||
215 | if (!pid) | |
216 | return 1; | |
217 | ||
218 | if (!pevent->cmdlines) | |
219 | cmdline_init(pevent); | |
220 | ||
221 | key.pid = pid; | |
222 | ||
223 | comm = bsearch(&key, pevent->cmdlines, pevent->cmdline_count, | |
224 | sizeof(*pevent->cmdlines), cmdline_cmp); | |
225 | ||
226 | if (comm) | |
227 | return 1; | |
228 | return 0; | |
229 | } | |
230 | ||
231 | /* | |
232 | * If the command lines have been converted to an array, then | |
233 | * we must add this pid. This is much slower than when cmdlines | |
234 | * are added before the array is initialized. | |
235 | */ | |
236 | static int add_new_comm(struct pevent *pevent, const char *comm, int pid) | |
237 | { | |
238 | struct cmdline *cmdlines = pevent->cmdlines; | |
239 | const struct cmdline *cmdline; | |
240 | struct cmdline key; | |
241 | ||
242 | if (!pid) | |
243 | return 0; | |
244 | ||
245 | /* avoid duplicates */ | |
246 | key.pid = pid; | |
247 | ||
248 | cmdline = bsearch(&key, pevent->cmdlines, pevent->cmdline_count, | |
249 | sizeof(*pevent->cmdlines), cmdline_cmp); | |
250 | if (cmdline) { | |
251 | errno = EEXIST; | |
252 | return -1; | |
253 | } | |
254 | ||
255 | cmdlines = realloc(cmdlines, sizeof(*cmdlines) * (pevent->cmdline_count + 1)); | |
256 | if (!cmdlines) { | |
257 | errno = ENOMEM; | |
258 | return -1; | |
259 | } | |
260 | ||
261 | cmdlines[pevent->cmdline_count].pid = pid; | |
262 | cmdlines[pevent->cmdline_count].comm = strdup(comm); | |
263 | if (!cmdlines[pevent->cmdline_count].comm) | |
264 | die("malloc comm"); | |
265 | ||
266 | if (cmdlines[pevent->cmdline_count].comm) | |
267 | pevent->cmdline_count++; | |
268 | ||
269 | qsort(cmdlines, pevent->cmdline_count, sizeof(*cmdlines), cmdline_cmp); | |
270 | pevent->cmdlines = cmdlines; | |
271 | ||
272 | return 0; | |
273 | } | |
274 | ||
275 | /** | |
276 | * pevent_register_comm - register a pid / comm mapping | |
277 | * @pevent: handle for the pevent | |
278 | * @comm: the command line to register | |
279 | * @pid: the pid to map the command line to | |
280 | * | |
281 | * This adds a mapping to search for command line names with | |
282 | * a given pid. The comm is duplicated. | |
283 | */ | |
284 | int pevent_register_comm(struct pevent *pevent, const char *comm, int pid) | |
285 | { | |
286 | struct cmdline_list *item; | |
287 | ||
288 | if (pevent->cmdlines) | |
289 | return add_new_comm(pevent, comm, pid); | |
290 | ||
291 | item = malloc_or_die(sizeof(*item)); | |
292 | item->comm = strdup(comm); | |
293 | if (!item->comm) | |
294 | die("malloc comm"); | |
295 | item->pid = pid; | |
296 | item->next = pevent->cmdlist; | |
297 | ||
298 | pevent->cmdlist = item; | |
299 | pevent->cmdline_count++; | |
300 | ||
301 | return 0; | |
302 | } | |
303 | ||
304 | struct func_map { | |
305 | unsigned long long addr; | |
306 | char *func; | |
307 | char *mod; | |
308 | }; | |
309 | ||
310 | struct func_list { | |
311 | struct func_list *next; | |
312 | unsigned long long addr; | |
313 | char *func; | |
314 | char *mod; | |
315 | }; | |
316 | ||
317 | static int func_cmp(const void *a, const void *b) | |
318 | { | |
319 | const struct func_map *fa = a; | |
320 | const struct func_map *fb = b; | |
321 | ||
322 | if (fa->addr < fb->addr) | |
323 | return -1; | |
324 | if (fa->addr > fb->addr) | |
325 | return 1; | |
326 | ||
327 | return 0; | |
328 | } | |
329 | ||
330 | /* | |
331 | * We are searching for a record in between, not an exact | |
332 | * match. | |
333 | */ | |
334 | static int func_bcmp(const void *a, const void *b) | |
335 | { | |
336 | const struct func_map *fa = a; | |
337 | const struct func_map *fb = b; | |
338 | ||
339 | if ((fa->addr == fb->addr) || | |
340 | ||
341 | (fa->addr > fb->addr && | |
342 | fa->addr < (fb+1)->addr)) | |
343 | return 0; | |
344 | ||
345 | if (fa->addr < fb->addr) | |
346 | return -1; | |
347 | ||
348 | return 1; | |
349 | } | |
350 | ||
351 | static int func_map_init(struct pevent *pevent) | |
352 | { | |
353 | struct func_list *funclist; | |
354 | struct func_list *item; | |
355 | struct func_map *func_map; | |
356 | int i; | |
357 | ||
358 | func_map = malloc_or_die(sizeof(*func_map) * (pevent->func_count + 1)); | |
359 | funclist = pevent->funclist; | |
360 | ||
361 | i = 0; | |
362 | while (funclist) { | |
363 | func_map[i].func = funclist->func; | |
364 | func_map[i].addr = funclist->addr; | |
365 | func_map[i].mod = funclist->mod; | |
366 | i++; | |
367 | item = funclist; | |
368 | funclist = funclist->next; | |
369 | free(item); | |
370 | } | |
371 | ||
372 | qsort(func_map, pevent->func_count, sizeof(*func_map), func_cmp); | |
373 | ||
374 | /* | |
375 | * Add a special record at the end. | |
376 | */ | |
377 | func_map[pevent->func_count].func = NULL; | |
378 | func_map[pevent->func_count].addr = 0; | |
379 | func_map[pevent->func_count].mod = NULL; | |
380 | ||
381 | pevent->func_map = func_map; | |
382 | pevent->funclist = NULL; | |
383 | ||
384 | return 0; | |
385 | } | |
386 | ||
387 | static struct func_map * | |
388 | find_func(struct pevent *pevent, unsigned long long addr) | |
389 | { | |
390 | struct func_map *func; | |
391 | struct func_map key; | |
392 | ||
393 | if (!pevent->func_map) | |
394 | func_map_init(pevent); | |
395 | ||
396 | key.addr = addr; | |
397 | ||
398 | func = bsearch(&key, pevent->func_map, pevent->func_count, | |
399 | sizeof(*pevent->func_map), func_bcmp); | |
400 | ||
401 | return func; | |
402 | } | |
403 | ||
404 | /** | |
405 | * pevent_find_function - find a function by a given address | |
406 | * @pevent: handle for the pevent | |
407 | * @addr: the address to find the function with | |
408 | * | |
409 | * Returns a pointer to the function stored that has the given | |
410 | * address. Note, the address does not have to be exact, it | |
411 | * will select the function that would contain the address. | |
412 | */ | |
413 | const char *pevent_find_function(struct pevent *pevent, unsigned long long addr) | |
414 | { | |
415 | struct func_map *map; | |
416 | ||
417 | map = find_func(pevent, addr); | |
418 | if (!map) | |
419 | return NULL; | |
420 | ||
421 | return map->func; | |
422 | } | |
423 | ||
424 | /** | |
425 | * pevent_find_function_address - find a function address by a given address | |
426 | * @pevent: handle for the pevent | |
427 | * @addr: the address to find the function with | |
428 | * | |
429 | * Returns the address the function starts at. This can be used in | |
430 | * conjunction with pevent_find_function to print both the function | |
431 | * name and the function offset. | |
432 | */ | |
433 | unsigned long long | |
434 | pevent_find_function_address(struct pevent *pevent, unsigned long long addr) | |
435 | { | |
436 | struct func_map *map; | |
437 | ||
438 | map = find_func(pevent, addr); | |
439 | if (!map) | |
440 | return 0; | |
441 | ||
442 | return map->addr; | |
443 | } | |
444 | ||
445 | /** | |
446 | * pevent_register_function - register a function with a given address | |
447 | * @pevent: handle for the pevent | |
448 | * @function: the function name to register | |
449 | * @addr: the address the function starts at | |
450 | * @mod: the kernel module the function may be in (NULL for none) | |
451 | * | |
452 | * This registers a function name with an address and module. | |
453 | * The @func passed in is duplicated. | |
454 | */ | |
455 | int pevent_register_function(struct pevent *pevent, char *func, | |
456 | unsigned long long addr, char *mod) | |
457 | { | |
458 | struct func_list *item; | |
459 | ||
460 | item = malloc_or_die(sizeof(*item)); | |
461 | ||
462 | item->next = pevent->funclist; | |
463 | item->func = strdup(func); | |
464 | if (mod) | |
465 | item->mod = strdup(mod); | |
466 | else | |
467 | item->mod = NULL; | |
468 | item->addr = addr; | |
469 | ||
ca63858e NK |
470 | if (!item->func || (mod && !item->mod)) |
471 | die("malloc func"); | |
f7d82350 | 472 | |
ca63858e | 473 | pevent->funclist = item; |
f7d82350 SR |
474 | pevent->func_count++; |
475 | ||
476 | return 0; | |
477 | } | |
478 | ||
479 | /** | |
480 | * pevent_print_funcs - print out the stored functions | |
481 | * @pevent: handle for the pevent | |
482 | * | |
483 | * This prints out the stored functions. | |
484 | */ | |
485 | void pevent_print_funcs(struct pevent *pevent) | |
486 | { | |
487 | int i; | |
488 | ||
489 | if (!pevent->func_map) | |
490 | func_map_init(pevent); | |
491 | ||
492 | for (i = 0; i < (int)pevent->func_count; i++) { | |
493 | printf("%016llx %s", | |
494 | pevent->func_map[i].addr, | |
495 | pevent->func_map[i].func); | |
496 | if (pevent->func_map[i].mod) | |
497 | printf(" [%s]\n", pevent->func_map[i].mod); | |
498 | else | |
499 | printf("\n"); | |
500 | } | |
501 | } | |
502 | ||
503 | struct printk_map { | |
504 | unsigned long long addr; | |
505 | char *printk; | |
506 | }; | |
507 | ||
508 | struct printk_list { | |
509 | struct printk_list *next; | |
510 | unsigned long long addr; | |
511 | char *printk; | |
512 | }; | |
513 | ||
514 | static int printk_cmp(const void *a, const void *b) | |
515 | { | |
0fc45ef5 NK |
516 | const struct printk_map *pa = a; |
517 | const struct printk_map *pb = b; | |
f7d82350 | 518 | |
0fc45ef5 | 519 | if (pa->addr < pb->addr) |
f7d82350 | 520 | return -1; |
0fc45ef5 | 521 | if (pa->addr > pb->addr) |
f7d82350 SR |
522 | return 1; |
523 | ||
524 | return 0; | |
525 | } | |
526 | ||
527 | static void printk_map_init(struct pevent *pevent) | |
528 | { | |
529 | struct printk_list *printklist; | |
530 | struct printk_list *item; | |
531 | struct printk_map *printk_map; | |
532 | int i; | |
533 | ||
534 | printk_map = malloc_or_die(sizeof(*printk_map) * (pevent->printk_count + 1)); | |
535 | ||
536 | printklist = pevent->printklist; | |
537 | ||
538 | i = 0; | |
539 | while (printklist) { | |
540 | printk_map[i].printk = printklist->printk; | |
541 | printk_map[i].addr = printklist->addr; | |
542 | i++; | |
543 | item = printklist; | |
544 | printklist = printklist->next; | |
545 | free(item); | |
546 | } | |
547 | ||
548 | qsort(printk_map, pevent->printk_count, sizeof(*printk_map), printk_cmp); | |
549 | ||
550 | pevent->printk_map = printk_map; | |
551 | pevent->printklist = NULL; | |
552 | } | |
553 | ||
554 | static struct printk_map * | |
555 | find_printk(struct pevent *pevent, unsigned long long addr) | |
556 | { | |
557 | struct printk_map *printk; | |
558 | struct printk_map key; | |
559 | ||
560 | if (!pevent->printk_map) | |
561 | printk_map_init(pevent); | |
562 | ||
563 | key.addr = addr; | |
564 | ||
565 | printk = bsearch(&key, pevent->printk_map, pevent->printk_count, | |
566 | sizeof(*pevent->printk_map), printk_cmp); | |
567 | ||
568 | return printk; | |
569 | } | |
570 | ||
571 | /** | |
572 | * pevent_register_print_string - register a string by its address | |
573 | * @pevent: handle for the pevent | |
574 | * @fmt: the string format to register | |
575 | * @addr: the address the string was located at | |
576 | * | |
577 | * This registers a string by the address it was stored in the kernel. | |
578 | * The @fmt passed in is duplicated. | |
579 | */ | |
580 | int pevent_register_print_string(struct pevent *pevent, char *fmt, | |
581 | unsigned long long addr) | |
582 | { | |
583 | struct printk_list *item; | |
584 | ||
585 | item = malloc_or_die(sizeof(*item)); | |
586 | ||
587 | item->next = pevent->printklist; | |
f7d82350 SR |
588 | item->printk = strdup(fmt); |
589 | item->addr = addr; | |
590 | ||
ca63858e NK |
591 | if (!item->printk) |
592 | die("malloc fmt"); | |
593 | ||
594 | pevent->printklist = item; | |
f7d82350 SR |
595 | pevent->printk_count++; |
596 | ||
597 | return 0; | |
598 | } | |
599 | ||
600 | /** | |
601 | * pevent_print_printk - print out the stored strings | |
602 | * @pevent: handle for the pevent | |
603 | * | |
604 | * This prints the string formats that were stored. | |
605 | */ | |
606 | void pevent_print_printk(struct pevent *pevent) | |
607 | { | |
608 | int i; | |
609 | ||
610 | if (!pevent->printk_map) | |
611 | printk_map_init(pevent); | |
612 | ||
613 | for (i = 0; i < (int)pevent->printk_count; i++) { | |
614 | printf("%016llx %s\n", | |
615 | pevent->printk_map[i].addr, | |
616 | pevent->printk_map[i].printk); | |
617 | } | |
618 | } | |
619 | ||
620 | static struct event_format *alloc_event(void) | |
621 | { | |
622 | struct event_format *event; | |
623 | ||
50d8f9e3 NK |
624 | event = malloc(sizeof(*event)); |
625 | if (!event) | |
626 | return NULL; | |
f7d82350 SR |
627 | memset(event, 0, sizeof(*event)); |
628 | ||
629 | return event; | |
630 | } | |
631 | ||
632 | static void add_event(struct pevent *pevent, struct event_format *event) | |
633 | { | |
634 | int i; | |
635 | ||
f6ced60f NK |
636 | pevent->events = realloc(pevent->events, sizeof(event) * |
637 | (pevent->nr_events + 1)); | |
f7d82350 SR |
638 | if (!pevent->events) |
639 | die("Can not allocate events"); | |
640 | ||
641 | for (i = 0; i < pevent->nr_events; i++) { | |
642 | if (pevent->events[i]->id > event->id) | |
643 | break; | |
644 | } | |
645 | if (i < pevent->nr_events) | |
646 | memmove(&pevent->events[i + 1], | |
647 | &pevent->events[i], | |
648 | sizeof(event) * (pevent->nr_events - i)); | |
649 | ||
650 | pevent->events[i] = event; | |
651 | pevent->nr_events++; | |
652 | ||
653 | event->pevent = pevent; | |
654 | } | |
655 | ||
656 | static int event_item_type(enum event_type type) | |
657 | { | |
658 | switch (type) { | |
659 | case EVENT_ITEM ... EVENT_SQUOTE: | |
660 | return 1; | |
661 | case EVENT_ERROR ... EVENT_DELIM: | |
662 | default: | |
663 | return 0; | |
664 | } | |
665 | } | |
666 | ||
667 | static void free_flag_sym(struct print_flag_sym *fsym) | |
668 | { | |
669 | struct print_flag_sym *next; | |
670 | ||
671 | while (fsym) { | |
672 | next = fsym->next; | |
673 | free(fsym->value); | |
674 | free(fsym->str); | |
675 | free(fsym); | |
676 | fsym = next; | |
677 | } | |
678 | } | |
679 | ||
680 | static void free_arg(struct print_arg *arg) | |
681 | { | |
682 | struct print_arg *farg; | |
683 | ||
684 | if (!arg) | |
685 | return; | |
686 | ||
687 | switch (arg->type) { | |
688 | case PRINT_ATOM: | |
689 | free(arg->atom.atom); | |
690 | break; | |
691 | case PRINT_FIELD: | |
692 | free(arg->field.name); | |
693 | break; | |
694 | case PRINT_FLAGS: | |
695 | free_arg(arg->flags.field); | |
696 | free(arg->flags.delim); | |
697 | free_flag_sym(arg->flags.flags); | |
698 | break; | |
699 | case PRINT_SYMBOL: | |
700 | free_arg(arg->symbol.field); | |
701 | free_flag_sym(arg->symbol.symbols); | |
702 | break; | |
e080e6f1 NK |
703 | case PRINT_HEX: |
704 | free_arg(arg->hex.field); | |
705 | free_arg(arg->hex.size); | |
706 | break; | |
f7d82350 SR |
707 | case PRINT_TYPE: |
708 | free(arg->typecast.type); | |
709 | free_arg(arg->typecast.item); | |
710 | break; | |
711 | case PRINT_STRING: | |
712 | case PRINT_BSTRING: | |
713 | free(arg->string.string); | |
714 | break; | |
715 | case PRINT_DYNAMIC_ARRAY: | |
716 | free(arg->dynarray.index); | |
717 | break; | |
718 | case PRINT_OP: | |
719 | free(arg->op.op); | |
720 | free_arg(arg->op.left); | |
721 | free_arg(arg->op.right); | |
722 | break; | |
723 | case PRINT_FUNC: | |
724 | while (arg->func.args) { | |
725 | farg = arg->func.args; | |
726 | arg->func.args = farg->next; | |
727 | free_arg(farg); | |
728 | } | |
729 | break; | |
730 | ||
731 | case PRINT_NULL: | |
732 | default: | |
733 | break; | |
734 | } | |
735 | ||
736 | free(arg); | |
737 | } | |
738 | ||
739 | static enum event_type get_type(int ch) | |
740 | { | |
741 | if (ch == '\n') | |
742 | return EVENT_NEWLINE; | |
743 | if (isspace(ch)) | |
744 | return EVENT_SPACE; | |
745 | if (isalnum(ch) || ch == '_') | |
746 | return EVENT_ITEM; | |
747 | if (ch == '\'') | |
748 | return EVENT_SQUOTE; | |
749 | if (ch == '"') | |
750 | return EVENT_DQUOTE; | |
751 | if (!isprint(ch)) | |
752 | return EVENT_NONE; | |
753 | if (ch == '(' || ch == ')' || ch == ',') | |
754 | return EVENT_DELIM; | |
755 | ||
756 | return EVENT_OP; | |
757 | } | |
758 | ||
759 | static int __read_char(void) | |
760 | { | |
761 | if (input_buf_ptr >= input_buf_siz) | |
762 | return -1; | |
763 | ||
764 | return input_buf[input_buf_ptr++]; | |
765 | } | |
766 | ||
767 | static int __peek_char(void) | |
768 | { | |
769 | if (input_buf_ptr >= input_buf_siz) | |
770 | return -1; | |
771 | ||
772 | return input_buf[input_buf_ptr]; | |
773 | } | |
774 | ||
775 | /** | |
776 | * pevent_peek_char - peek at the next character that will be read | |
777 | * | |
778 | * Returns the next character read, or -1 if end of buffer. | |
779 | */ | |
780 | int pevent_peek_char(void) | |
781 | { | |
782 | return __peek_char(); | |
783 | } | |
784 | ||
deba3fb2 NK |
785 | static int extend_token(char **tok, char *buf, int size) |
786 | { | |
787 | char *newtok = realloc(*tok, size); | |
788 | ||
789 | if (!newtok) { | |
790 | free(*tok); | |
791 | *tok = NULL; | |
792 | return -1; | |
793 | } | |
794 | ||
795 | if (!*tok) | |
796 | strcpy(newtok, buf); | |
797 | else | |
798 | strcat(newtok, buf); | |
799 | *tok = newtok; | |
800 | ||
801 | return 0; | |
802 | } | |
803 | ||
f7d82350 SR |
804 | static enum event_type force_token(const char *str, char **tok); |
805 | ||
806 | static enum event_type __read_token(char **tok) | |
807 | { | |
808 | char buf[BUFSIZ]; | |
809 | int ch, last_ch, quote_ch, next_ch; | |
810 | int i = 0; | |
811 | int tok_size = 0; | |
812 | enum event_type type; | |
813 | ||
814 | *tok = NULL; | |
815 | ||
816 | ||
817 | ch = __read_char(); | |
818 | if (ch < 0) | |
819 | return EVENT_NONE; | |
820 | ||
821 | type = get_type(ch); | |
822 | if (type == EVENT_NONE) | |
823 | return type; | |
824 | ||
825 | buf[i++] = ch; | |
826 | ||
827 | switch (type) { | |
828 | case EVENT_NEWLINE: | |
829 | case EVENT_DELIM: | |
830 | *tok = malloc_or_die(2); | |
831 | (*tok)[0] = ch; | |
832 | (*tok)[1] = 0; | |
833 | return type; | |
834 | ||
835 | case EVENT_OP: | |
836 | switch (ch) { | |
837 | case '-': | |
838 | next_ch = __peek_char(); | |
839 | if (next_ch == '>') { | |
840 | buf[i++] = __read_char(); | |
841 | break; | |
842 | } | |
843 | /* fall through */ | |
844 | case '+': | |
845 | case '|': | |
846 | case '&': | |
847 | case '>': | |
848 | case '<': | |
849 | last_ch = ch; | |
850 | ch = __peek_char(); | |
851 | if (ch != last_ch) | |
852 | goto test_equal; | |
853 | buf[i++] = __read_char(); | |
854 | switch (last_ch) { | |
855 | case '>': | |
856 | case '<': | |
857 | goto test_equal; | |
858 | default: | |
859 | break; | |
860 | } | |
861 | break; | |
862 | case '!': | |
863 | case '=': | |
864 | goto test_equal; | |
865 | default: /* what should we do instead? */ | |
866 | break; | |
867 | } | |
868 | buf[i] = 0; | |
869 | *tok = strdup(buf); | |
870 | return type; | |
871 | ||
872 | test_equal: | |
873 | ch = __peek_char(); | |
874 | if (ch == '=') | |
875 | buf[i++] = __read_char(); | |
876 | goto out; | |
877 | ||
878 | case EVENT_DQUOTE: | |
879 | case EVENT_SQUOTE: | |
880 | /* don't keep quotes */ | |
881 | i--; | |
882 | quote_ch = ch; | |
883 | last_ch = 0; | |
884 | concat: | |
885 | do { | |
886 | if (i == (BUFSIZ - 1)) { | |
887 | buf[i] = 0; | |
f7d82350 | 888 | tok_size += BUFSIZ; |
deba3fb2 NK |
889 | |
890 | if (extend_token(tok, buf, tok_size) < 0) | |
891 | return EVENT_NONE; | |
f7d82350 SR |
892 | i = 0; |
893 | } | |
894 | last_ch = ch; | |
895 | ch = __read_char(); | |
896 | buf[i++] = ch; | |
897 | /* the '\' '\' will cancel itself */ | |
898 | if (ch == '\\' && last_ch == '\\') | |
899 | last_ch = 0; | |
900 | } while (ch != quote_ch || last_ch == '\\'); | |
901 | /* remove the last quote */ | |
902 | i--; | |
903 | ||
904 | /* | |
905 | * For strings (double quotes) check the next token. | |
906 | * If it is another string, concatinate the two. | |
907 | */ | |
908 | if (type == EVENT_DQUOTE) { | |
909 | unsigned long long save_input_buf_ptr = input_buf_ptr; | |
910 | ||
911 | do { | |
912 | ch = __read_char(); | |
913 | } while (isspace(ch)); | |
914 | if (ch == '"') | |
915 | goto concat; | |
916 | input_buf_ptr = save_input_buf_ptr; | |
917 | } | |
918 | ||
919 | goto out; | |
920 | ||
921 | case EVENT_ERROR ... EVENT_SPACE: | |
922 | case EVENT_ITEM: | |
923 | default: | |
924 | break; | |
925 | } | |
926 | ||
927 | while (get_type(__peek_char()) == type) { | |
928 | if (i == (BUFSIZ - 1)) { | |
929 | buf[i] = 0; | |
deba3fb2 | 930 | tok_size += BUFSIZ; |
f7d82350 | 931 | |
deba3fb2 | 932 | if (extend_token(tok, buf, tok_size) < 0) |
f7d82350 | 933 | return EVENT_NONE; |
f7d82350 SR |
934 | i = 0; |
935 | } | |
936 | ch = __read_char(); | |
937 | buf[i++] = ch; | |
938 | } | |
939 | ||
940 | out: | |
941 | buf[i] = 0; | |
deba3fb2 | 942 | if (extend_token(tok, buf, tok_size + i + 1) < 0) |
f7d82350 SR |
943 | return EVENT_NONE; |
944 | ||
945 | if (type == EVENT_ITEM) { | |
946 | /* | |
947 | * Older versions of the kernel has a bug that | |
948 | * creates invalid symbols and will break the mac80211 | |
949 | * parsing. This is a work around to that bug. | |
950 | * | |
951 | * See Linux kernel commit: | |
952 | * 811cb50baf63461ce0bdb234927046131fc7fa8b | |
953 | */ | |
954 | if (strcmp(*tok, "LOCAL_PR_FMT") == 0) { | |
955 | free(*tok); | |
956 | *tok = NULL; | |
957 | return force_token("\"\%s\" ", tok); | |
958 | } else if (strcmp(*tok, "STA_PR_FMT") == 0) { | |
959 | free(*tok); | |
960 | *tok = NULL; | |
961 | return force_token("\" sta:%pM\" ", tok); | |
962 | } else if (strcmp(*tok, "VIF_PR_FMT") == 0) { | |
963 | free(*tok); | |
964 | *tok = NULL; | |
965 | return force_token("\" vif:%p(%d)\" ", tok); | |
966 | } | |
967 | } | |
968 | ||
969 | return type; | |
970 | } | |
971 | ||
972 | static enum event_type force_token(const char *str, char **tok) | |
973 | { | |
974 | const char *save_input_buf; | |
975 | unsigned long long save_input_buf_ptr; | |
976 | unsigned long long save_input_buf_siz; | |
977 | enum event_type type; | |
978 | ||
979 | /* save off the current input pointers */ | |
980 | save_input_buf = input_buf; | |
981 | save_input_buf_ptr = input_buf_ptr; | |
982 | save_input_buf_siz = input_buf_siz; | |
983 | ||
984 | init_input_buf(str, strlen(str)); | |
985 | ||
986 | type = __read_token(tok); | |
987 | ||
988 | /* reset back to original token */ | |
989 | input_buf = save_input_buf; | |
990 | input_buf_ptr = save_input_buf_ptr; | |
991 | input_buf_siz = save_input_buf_siz; | |
992 | ||
993 | return type; | |
994 | } | |
995 | ||
996 | static void free_token(char *tok) | |
997 | { | |
998 | if (tok) | |
999 | free(tok); | |
1000 | } | |
1001 | ||
1002 | static enum event_type read_token(char **tok) | |
1003 | { | |
1004 | enum event_type type; | |
1005 | ||
1006 | for (;;) { | |
1007 | type = __read_token(tok); | |
1008 | if (type != EVENT_SPACE) | |
1009 | return type; | |
1010 | ||
1011 | free_token(*tok); | |
1012 | } | |
1013 | ||
1014 | /* not reached */ | |
1015 | *tok = NULL; | |
1016 | return EVENT_NONE; | |
1017 | } | |
1018 | ||
1019 | /** | |
1020 | * pevent_read_token - access to utilites to use the pevent parser | |
1021 | * @tok: The token to return | |
1022 | * | |
1023 | * This will parse tokens from the string given by | |
1024 | * pevent_init_data(). | |
1025 | * | |
1026 | * Returns the token type. | |
1027 | */ | |
1028 | enum event_type pevent_read_token(char **tok) | |
1029 | { | |
1030 | return read_token(tok); | |
1031 | } | |
1032 | ||
1033 | /** | |
1034 | * pevent_free_token - free a token returned by pevent_read_token | |
1035 | * @token: the token to free | |
1036 | */ | |
1037 | void pevent_free_token(char *token) | |
1038 | { | |
1039 | free_token(token); | |
1040 | } | |
1041 | ||
1042 | /* no newline */ | |
1043 | static enum event_type read_token_item(char **tok) | |
1044 | { | |
1045 | enum event_type type; | |
1046 | ||
1047 | for (;;) { | |
1048 | type = __read_token(tok); | |
1049 | if (type != EVENT_SPACE && type != EVENT_NEWLINE) | |
1050 | return type; | |
1051 | free_token(*tok); | |
1052 | *tok = NULL; | |
1053 | } | |
1054 | ||
1055 | /* not reached */ | |
1056 | *tok = NULL; | |
1057 | return EVENT_NONE; | |
1058 | } | |
1059 | ||
1060 | static int test_type(enum event_type type, enum event_type expect) | |
1061 | { | |
1062 | if (type != expect) { | |
1063 | do_warning("Error: expected type %d but read %d", | |
1064 | expect, type); | |
1065 | return -1; | |
1066 | } | |
1067 | return 0; | |
1068 | } | |
1069 | ||
1070 | static int test_type_token(enum event_type type, const char *token, | |
1071 | enum event_type expect, const char *expect_tok) | |
1072 | { | |
1073 | if (type != expect) { | |
1074 | do_warning("Error: expected type %d but read %d", | |
1075 | expect, type); | |
1076 | return -1; | |
1077 | } | |
1078 | ||
1079 | if (strcmp(token, expect_tok) != 0) { | |
1080 | do_warning("Error: expected '%s' but read '%s'", | |
1081 | expect_tok, token); | |
1082 | return -1; | |
1083 | } | |
1084 | return 0; | |
1085 | } | |
1086 | ||
1087 | static int __read_expect_type(enum event_type expect, char **tok, int newline_ok) | |
1088 | { | |
1089 | enum event_type type; | |
1090 | ||
1091 | if (newline_ok) | |
1092 | type = read_token(tok); | |
1093 | else | |
1094 | type = read_token_item(tok); | |
1095 | return test_type(type, expect); | |
1096 | } | |
1097 | ||
1098 | static int read_expect_type(enum event_type expect, char **tok) | |
1099 | { | |
1100 | return __read_expect_type(expect, tok, 1); | |
1101 | } | |
1102 | ||
1103 | static int __read_expected(enum event_type expect, const char *str, | |
1104 | int newline_ok) | |
1105 | { | |
1106 | enum event_type type; | |
1107 | char *token; | |
1108 | int ret; | |
1109 | ||
1110 | if (newline_ok) | |
1111 | type = read_token(&token); | |
1112 | else | |
1113 | type = read_token_item(&token); | |
1114 | ||
1115 | ret = test_type_token(type, token, expect, str); | |
1116 | ||
1117 | free_token(token); | |
1118 | ||
1119 | return ret; | |
1120 | } | |
1121 | ||
1122 | static int read_expected(enum event_type expect, const char *str) | |
1123 | { | |
1124 | return __read_expected(expect, str, 1); | |
1125 | } | |
1126 | ||
1127 | static int read_expected_item(enum event_type expect, const char *str) | |
1128 | { | |
1129 | return __read_expected(expect, str, 0); | |
1130 | } | |
1131 | ||
1132 | static char *event_read_name(void) | |
1133 | { | |
1134 | char *token; | |
1135 | ||
1136 | if (read_expected(EVENT_ITEM, "name") < 0) | |
1137 | return NULL; | |
1138 | ||
1139 | if (read_expected(EVENT_OP, ":") < 0) | |
1140 | return NULL; | |
1141 | ||
1142 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
1143 | goto fail; | |
1144 | ||
1145 | return token; | |
1146 | ||
1147 | fail: | |
1148 | free_token(token); | |
1149 | return NULL; | |
1150 | } | |
1151 | ||
1152 | static int event_read_id(void) | |
1153 | { | |
1154 | char *token; | |
1155 | int id; | |
1156 | ||
1157 | if (read_expected_item(EVENT_ITEM, "ID") < 0) | |
1158 | return -1; | |
1159 | ||
1160 | if (read_expected(EVENT_OP, ":") < 0) | |
1161 | return -1; | |
1162 | ||
1163 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
1164 | goto fail; | |
1165 | ||
1166 | id = strtoul(token, NULL, 0); | |
1167 | free_token(token); | |
1168 | return id; | |
1169 | ||
1170 | fail: | |
1171 | free_token(token); | |
1172 | return -1; | |
1173 | } | |
1174 | ||
1175 | static int field_is_string(struct format_field *field) | |
1176 | { | |
1177 | if ((field->flags & FIELD_IS_ARRAY) && | |
1178 | (strstr(field->type, "char") || strstr(field->type, "u8") || | |
1179 | strstr(field->type, "s8"))) | |
1180 | return 1; | |
1181 | ||
1182 | return 0; | |
1183 | } | |
1184 | ||
1185 | static int field_is_dynamic(struct format_field *field) | |
1186 | { | |
1187 | if (strncmp(field->type, "__data_loc", 10) == 0) | |
1188 | return 1; | |
1189 | ||
1190 | return 0; | |
1191 | } | |
1192 | ||
1193 | static int field_is_long(struct format_field *field) | |
1194 | { | |
1195 | /* includes long long */ | |
1196 | if (strstr(field->type, "long")) | |
1197 | return 1; | |
1198 | ||
1199 | return 0; | |
1200 | } | |
1201 | ||
1202 | static int event_read_fields(struct event_format *event, struct format_field **fields) | |
1203 | { | |
1204 | struct format_field *field = NULL; | |
1205 | enum event_type type; | |
1206 | char *token; | |
1207 | char *last_token; | |
1208 | int count = 0; | |
1209 | ||
1210 | do { | |
1211 | type = read_token(&token); | |
1212 | if (type == EVENT_NEWLINE) { | |
1213 | free_token(token); | |
1214 | return count; | |
1215 | } | |
1216 | ||
1217 | count++; | |
1218 | ||
1219 | if (test_type_token(type, token, EVENT_ITEM, "field")) | |
1220 | goto fail; | |
1221 | free_token(token); | |
1222 | ||
1223 | type = read_token(&token); | |
1224 | /* | |
1225 | * The ftrace fields may still use the "special" name. | |
1226 | * Just ignore it. | |
1227 | */ | |
1228 | if (event->flags & EVENT_FL_ISFTRACE && | |
1229 | type == EVENT_ITEM && strcmp(token, "special") == 0) { | |
1230 | free_token(token); | |
1231 | type = read_token(&token); | |
1232 | } | |
1233 | ||
1234 | if (test_type_token(type, token, EVENT_OP, ":") < 0) | |
1235 | goto fail; | |
1236 | ||
1237 | free_token(token); | |
1238 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
1239 | goto fail; | |
1240 | ||
1241 | last_token = token; | |
1242 | ||
1243 | field = malloc_or_die(sizeof(*field)); | |
1244 | memset(field, 0, sizeof(*field)); | |
1245 | field->event = event; | |
1246 | ||
1247 | /* read the rest of the type */ | |
1248 | for (;;) { | |
1249 | type = read_token(&token); | |
1250 | if (type == EVENT_ITEM || | |
1251 | (type == EVENT_OP && strcmp(token, "*") == 0) || | |
1252 | /* | |
1253 | * Some of the ftrace fields are broken and have | |
1254 | * an illegal "." in them. | |
1255 | */ | |
1256 | (event->flags & EVENT_FL_ISFTRACE && | |
1257 | type == EVENT_OP && strcmp(token, ".") == 0)) { | |
1258 | ||
1259 | if (strcmp(token, "*") == 0) | |
1260 | field->flags |= FIELD_IS_POINTER; | |
1261 | ||
1262 | if (field->type) { | |
d286447f NK |
1263 | char *new_type; |
1264 | new_type = realloc(field->type, | |
1265 | strlen(field->type) + | |
1266 | strlen(last_token) + 2); | |
1267 | if (!new_type) { | |
1268 | free(last_token); | |
1269 | goto fail; | |
1270 | } | |
1271 | field->type = new_type; | |
f7d82350 SR |
1272 | strcat(field->type, " "); |
1273 | strcat(field->type, last_token); | |
1274 | free(last_token); | |
1275 | } else | |
1276 | field->type = last_token; | |
1277 | last_token = token; | |
1278 | continue; | |
1279 | } | |
1280 | ||
1281 | break; | |
1282 | } | |
1283 | ||
1284 | if (!field->type) { | |
1285 | die("no type found"); | |
1286 | goto fail; | |
1287 | } | |
1288 | field->name = last_token; | |
1289 | ||
1290 | if (test_type(type, EVENT_OP)) | |
1291 | goto fail; | |
1292 | ||
1293 | if (strcmp(token, "[") == 0) { | |
1294 | enum event_type last_type = type; | |
1295 | char *brackets = token; | |
d286447f | 1296 | char *new_brackets; |
f7d82350 SR |
1297 | int len; |
1298 | ||
1299 | field->flags |= FIELD_IS_ARRAY; | |
1300 | ||
1301 | type = read_token(&token); | |
1302 | ||
1303 | if (type == EVENT_ITEM) | |
1304 | field->arraylen = strtoul(token, NULL, 0); | |
1305 | else | |
1306 | field->arraylen = 0; | |
1307 | ||
1308 | while (strcmp(token, "]") != 0) { | |
1309 | if (last_type == EVENT_ITEM && | |
1310 | type == EVENT_ITEM) | |
1311 | len = 2; | |
1312 | else | |
1313 | len = 1; | |
1314 | last_type = type; | |
1315 | ||
d286447f NK |
1316 | new_brackets = realloc(brackets, |
1317 | strlen(brackets) + | |
1318 | strlen(token) + len); | |
1319 | if (!new_brackets) { | |
1320 | free(brackets); | |
1321 | goto fail; | |
1322 | } | |
1323 | brackets = new_brackets; | |
f7d82350 SR |
1324 | if (len == 2) |
1325 | strcat(brackets, " "); | |
1326 | strcat(brackets, token); | |
1327 | /* We only care about the last token */ | |
1328 | field->arraylen = strtoul(token, NULL, 0); | |
1329 | free_token(token); | |
1330 | type = read_token(&token); | |
1331 | if (type == EVENT_NONE) { | |
1332 | die("failed to find token"); | |
1333 | goto fail; | |
1334 | } | |
1335 | } | |
1336 | ||
1337 | free_token(token); | |
1338 | ||
d286447f NK |
1339 | new_brackets = realloc(brackets, strlen(brackets) + 2); |
1340 | if (!new_brackets) { | |
1341 | free(brackets); | |
1342 | goto fail; | |
1343 | } | |
1344 | brackets = new_brackets; | |
f7d82350 SR |
1345 | strcat(brackets, "]"); |
1346 | ||
1347 | /* add brackets to type */ | |
1348 | ||
1349 | type = read_token(&token); | |
1350 | /* | |
1351 | * If the next token is not an OP, then it is of | |
1352 | * the format: type [] item; | |
1353 | */ | |
1354 | if (type == EVENT_ITEM) { | |
d286447f NK |
1355 | char *new_type; |
1356 | new_type = realloc(field->type, | |
1357 | strlen(field->type) + | |
1358 | strlen(field->name) + | |
1359 | strlen(brackets) + 2); | |
1360 | if (!new_type) { | |
1361 | free(brackets); | |
1362 | goto fail; | |
1363 | } | |
1364 | field->type = new_type; | |
f7d82350 SR |
1365 | strcat(field->type, " "); |
1366 | strcat(field->type, field->name); | |
1367 | free_token(field->name); | |
1368 | strcat(field->type, brackets); | |
1369 | field->name = token; | |
1370 | type = read_token(&token); | |
1371 | } else { | |
d286447f NK |
1372 | char *new_type; |
1373 | new_type = realloc(field->type, | |
1374 | strlen(field->type) + | |
1375 | strlen(brackets) + 1); | |
1376 | if (!new_type) { | |
1377 | free(brackets); | |
1378 | goto fail; | |
1379 | } | |
1380 | field->type = new_type; | |
f7d82350 SR |
1381 | strcat(field->type, brackets); |
1382 | } | |
1383 | free(brackets); | |
1384 | } | |
1385 | ||
1386 | if (field_is_string(field)) | |
1387 | field->flags |= FIELD_IS_STRING; | |
1388 | if (field_is_dynamic(field)) | |
1389 | field->flags |= FIELD_IS_DYNAMIC; | |
1390 | if (field_is_long(field)) | |
1391 | field->flags |= FIELD_IS_LONG; | |
1392 | ||
1393 | if (test_type_token(type, token, EVENT_OP, ";")) | |
1394 | goto fail; | |
1395 | free_token(token); | |
1396 | ||
1397 | if (read_expected(EVENT_ITEM, "offset") < 0) | |
1398 | goto fail_expect; | |
1399 | ||
1400 | if (read_expected(EVENT_OP, ":") < 0) | |
1401 | goto fail_expect; | |
1402 | ||
1403 | if (read_expect_type(EVENT_ITEM, &token)) | |
1404 | goto fail; | |
1405 | field->offset = strtoul(token, NULL, 0); | |
1406 | free_token(token); | |
1407 | ||
1408 | if (read_expected(EVENT_OP, ";") < 0) | |
1409 | goto fail_expect; | |
1410 | ||
1411 | if (read_expected(EVENT_ITEM, "size") < 0) | |
1412 | goto fail_expect; | |
1413 | ||
1414 | if (read_expected(EVENT_OP, ":") < 0) | |
1415 | goto fail_expect; | |
1416 | ||
1417 | if (read_expect_type(EVENT_ITEM, &token)) | |
1418 | goto fail; | |
1419 | field->size = strtoul(token, NULL, 0); | |
1420 | free_token(token); | |
1421 | ||
1422 | if (read_expected(EVENT_OP, ";") < 0) | |
1423 | goto fail_expect; | |
1424 | ||
1425 | type = read_token(&token); | |
1426 | if (type != EVENT_NEWLINE) { | |
1427 | /* newer versions of the kernel have a "signed" type */ | |
1428 | if (test_type_token(type, token, EVENT_ITEM, "signed")) | |
1429 | goto fail; | |
1430 | ||
1431 | free_token(token); | |
1432 | ||
1433 | if (read_expected(EVENT_OP, ":") < 0) | |
1434 | goto fail_expect; | |
1435 | ||
1436 | if (read_expect_type(EVENT_ITEM, &token)) | |
1437 | goto fail; | |
1438 | ||
1439 | /* add signed type */ | |
1440 | ||
1441 | free_token(token); | |
1442 | if (read_expected(EVENT_OP, ";") < 0) | |
1443 | goto fail_expect; | |
1444 | ||
1445 | if (read_expect_type(EVENT_NEWLINE, &token)) | |
1446 | goto fail; | |
1447 | } | |
1448 | ||
1449 | free_token(token); | |
1450 | ||
1451 | if (field->flags & FIELD_IS_ARRAY) { | |
1452 | if (field->arraylen) | |
1453 | field->elementsize = field->size / field->arraylen; | |
1454 | else if (field->flags & FIELD_IS_STRING) | |
1455 | field->elementsize = 1; | |
1456 | else | |
1457 | field->elementsize = event->pevent->long_size; | |
1458 | } else | |
1459 | field->elementsize = field->size; | |
1460 | ||
1461 | *fields = field; | |
1462 | fields = &field->next; | |
1463 | ||
1464 | } while (1); | |
1465 | ||
1466 | return 0; | |
1467 | ||
1468 | fail: | |
1469 | free_token(token); | |
1470 | fail_expect: | |
57d34dc5 NK |
1471 | if (field) { |
1472 | free(field->type); | |
1473 | free(field->name); | |
f7d82350 | 1474 | free(field); |
57d34dc5 | 1475 | } |
f7d82350 SR |
1476 | return -1; |
1477 | } | |
1478 | ||
1479 | static int event_read_format(struct event_format *event) | |
1480 | { | |
1481 | char *token; | |
1482 | int ret; | |
1483 | ||
1484 | if (read_expected_item(EVENT_ITEM, "format") < 0) | |
1485 | return -1; | |
1486 | ||
1487 | if (read_expected(EVENT_OP, ":") < 0) | |
1488 | return -1; | |
1489 | ||
1490 | if (read_expect_type(EVENT_NEWLINE, &token)) | |
1491 | goto fail; | |
1492 | free_token(token); | |
1493 | ||
1494 | ret = event_read_fields(event, &event->format.common_fields); | |
1495 | if (ret < 0) | |
1496 | return ret; | |
1497 | event->format.nr_common = ret; | |
1498 | ||
1499 | ret = event_read_fields(event, &event->format.fields); | |
1500 | if (ret < 0) | |
1501 | return ret; | |
1502 | event->format.nr_fields = ret; | |
1503 | ||
1504 | return 0; | |
1505 | ||
1506 | fail: | |
1507 | free_token(token); | |
1508 | return -1; | |
1509 | } | |
1510 | ||
1511 | static enum event_type | |
1512 | process_arg_token(struct event_format *event, struct print_arg *arg, | |
1513 | char **tok, enum event_type type); | |
1514 | ||
1515 | static enum event_type | |
1516 | process_arg(struct event_format *event, struct print_arg *arg, char **tok) | |
1517 | { | |
1518 | enum event_type type; | |
1519 | char *token; | |
1520 | ||
1521 | type = read_token(&token); | |
1522 | *tok = token; | |
1523 | ||
1524 | return process_arg_token(event, arg, tok, type); | |
1525 | } | |
1526 | ||
1527 | static enum event_type | |
1528 | process_op(struct event_format *event, struct print_arg *arg, char **tok); | |
1529 | ||
1530 | static enum event_type | |
1531 | process_cond(struct event_format *event, struct print_arg *top, char **tok) | |
1532 | { | |
1533 | struct print_arg *arg, *left, *right; | |
1534 | enum event_type type; | |
1535 | char *token = NULL; | |
1536 | ||
1537 | arg = alloc_arg(); | |
1538 | left = alloc_arg(); | |
1539 | right = alloc_arg(); | |
1540 | ||
1541 | arg->type = PRINT_OP; | |
1542 | arg->op.left = left; | |
1543 | arg->op.right = right; | |
1544 | ||
1545 | *tok = NULL; | |
1546 | type = process_arg(event, left, &token); | |
1547 | ||
1548 | again: | |
1549 | /* Handle other operations in the arguments */ | |
1550 | if (type == EVENT_OP && strcmp(token, ":") != 0) { | |
1551 | type = process_op(event, left, &token); | |
1552 | goto again; | |
1553 | } | |
1554 | ||
1555 | if (test_type_token(type, token, EVENT_OP, ":")) | |
1556 | goto out_free; | |
1557 | ||
1558 | arg->op.op = token; | |
1559 | ||
1560 | type = process_arg(event, right, &token); | |
1561 | ||
1562 | top->op.right = arg; | |
1563 | ||
1564 | *tok = token; | |
1565 | return type; | |
1566 | ||
1567 | out_free: | |
1568 | /* Top may point to itself */ | |
1569 | top->op.right = NULL; | |
1570 | free_token(token); | |
1571 | free_arg(arg); | |
1572 | return EVENT_ERROR; | |
1573 | } | |
1574 | ||
1575 | static enum event_type | |
1576 | process_array(struct event_format *event, struct print_arg *top, char **tok) | |
1577 | { | |
1578 | struct print_arg *arg; | |
1579 | enum event_type type; | |
1580 | char *token = NULL; | |
1581 | ||
1582 | arg = alloc_arg(); | |
1583 | ||
1584 | *tok = NULL; | |
1585 | type = process_arg(event, arg, &token); | |
1586 | if (test_type_token(type, token, EVENT_OP, "]")) | |
1587 | goto out_free; | |
1588 | ||
1589 | top->op.right = arg; | |
1590 | ||
1591 | free_token(token); | |
1592 | type = read_token_item(&token); | |
1593 | *tok = token; | |
1594 | ||
1595 | return type; | |
1596 | ||
1597 | out_free: | |
1598 | free_token(*tok); | |
1599 | *tok = NULL; | |
1600 | free_arg(arg); | |
1601 | return EVENT_ERROR; | |
1602 | } | |
1603 | ||
1604 | static int get_op_prio(char *op) | |
1605 | { | |
1606 | if (!op[1]) { | |
1607 | switch (op[0]) { | |
1608 | case '~': | |
1609 | case '!': | |
1610 | return 4; | |
1611 | case '*': | |
1612 | case '/': | |
1613 | case '%': | |
1614 | return 6; | |
1615 | case '+': | |
1616 | case '-': | |
1617 | return 7; | |
1618 | /* '>>' and '<<' are 8 */ | |
1619 | case '<': | |
1620 | case '>': | |
1621 | return 9; | |
1622 | /* '==' and '!=' are 10 */ | |
1623 | case '&': | |
1624 | return 11; | |
1625 | case '^': | |
1626 | return 12; | |
1627 | case '|': | |
1628 | return 13; | |
1629 | case '?': | |
1630 | return 16; | |
1631 | default: | |
14ffde0e | 1632 | do_warning("unknown op '%c'", op[0]); |
f7d82350 SR |
1633 | return -1; |
1634 | } | |
1635 | } else { | |
1636 | if (strcmp(op, "++") == 0 || | |
1637 | strcmp(op, "--") == 0) { | |
1638 | return 3; | |
1639 | } else if (strcmp(op, ">>") == 0 || | |
1640 | strcmp(op, "<<") == 0) { | |
1641 | return 8; | |
1642 | } else if (strcmp(op, ">=") == 0 || | |
1643 | strcmp(op, "<=") == 0) { | |
1644 | return 9; | |
1645 | } else if (strcmp(op, "==") == 0 || | |
1646 | strcmp(op, "!=") == 0) { | |
1647 | return 10; | |
1648 | } else if (strcmp(op, "&&") == 0) { | |
1649 | return 14; | |
1650 | } else if (strcmp(op, "||") == 0) { | |
1651 | return 15; | |
1652 | } else { | |
14ffde0e | 1653 | do_warning("unknown op '%s'", op); |
f7d82350 SR |
1654 | return -1; |
1655 | } | |
1656 | } | |
1657 | } | |
1658 | ||
14ffde0e | 1659 | static int set_op_prio(struct print_arg *arg) |
f7d82350 SR |
1660 | { |
1661 | ||
1662 | /* single ops are the greatest */ | |
14ffde0e | 1663 | if (!arg->op.left || arg->op.left->type == PRINT_NULL) |
f7d82350 | 1664 | arg->op.prio = 0; |
14ffde0e VN |
1665 | else |
1666 | arg->op.prio = get_op_prio(arg->op.op); | |
f7d82350 | 1667 | |
14ffde0e | 1668 | return arg->op.prio; |
f7d82350 SR |
1669 | } |
1670 | ||
1671 | /* Note, *tok does not get freed, but will most likely be saved */ | |
1672 | static enum event_type | |
1673 | process_op(struct event_format *event, struct print_arg *arg, char **tok) | |
1674 | { | |
1675 | struct print_arg *left, *right = NULL; | |
1676 | enum event_type type; | |
1677 | char *token; | |
1678 | ||
1679 | /* the op is passed in via tok */ | |
1680 | token = *tok; | |
1681 | ||
1682 | if (arg->type == PRINT_OP && !arg->op.left) { | |
1683 | /* handle single op */ | |
1684 | if (token[1]) { | |
1685 | die("bad op token %s", token); | |
1686 | goto out_free; | |
1687 | } | |
1688 | switch (token[0]) { | |
1689 | case '~': | |
1690 | case '!': | |
1691 | case '+': | |
1692 | case '-': | |
1693 | break; | |
1694 | default: | |
1695 | do_warning("bad op token %s", token); | |
1696 | goto out_free; | |
1697 | ||
1698 | } | |
1699 | ||
1700 | /* make an empty left */ | |
1701 | left = alloc_arg(); | |
1702 | left->type = PRINT_NULL; | |
1703 | arg->op.left = left; | |
1704 | ||
1705 | right = alloc_arg(); | |
1706 | arg->op.right = right; | |
1707 | ||
1708 | /* do not free the token, it belongs to an op */ | |
1709 | *tok = NULL; | |
1710 | type = process_arg(event, right, tok); | |
1711 | ||
1712 | } else if (strcmp(token, "?") == 0) { | |
1713 | ||
1714 | left = alloc_arg(); | |
1715 | /* copy the top arg to the left */ | |
1716 | *left = *arg; | |
1717 | ||
1718 | arg->type = PRINT_OP; | |
1719 | arg->op.op = token; | |
1720 | arg->op.left = left; | |
1721 | arg->op.prio = 0; | |
1722 | ||
1723 | type = process_cond(event, arg, tok); | |
1724 | ||
1725 | } else if (strcmp(token, ">>") == 0 || | |
1726 | strcmp(token, "<<") == 0 || | |
1727 | strcmp(token, "&") == 0 || | |
1728 | strcmp(token, "|") == 0 || | |
1729 | strcmp(token, "&&") == 0 || | |
1730 | strcmp(token, "||") == 0 || | |
1731 | strcmp(token, "-") == 0 || | |
1732 | strcmp(token, "+") == 0 || | |
1733 | strcmp(token, "*") == 0 || | |
1734 | strcmp(token, "^") == 0 || | |
1735 | strcmp(token, "/") == 0 || | |
1736 | strcmp(token, "<") == 0 || | |
1737 | strcmp(token, ">") == 0 || | |
1738 | strcmp(token, "==") == 0 || | |
1739 | strcmp(token, "!=") == 0) { | |
1740 | ||
1741 | left = alloc_arg(); | |
1742 | ||
1743 | /* copy the top arg to the left */ | |
1744 | *left = *arg; | |
1745 | ||
1746 | arg->type = PRINT_OP; | |
1747 | arg->op.op = token; | |
1748 | arg->op.left = left; | |
1749 | ||
14ffde0e VN |
1750 | if (set_op_prio(arg) == -1) { |
1751 | event->flags |= EVENT_FL_FAILED; | |
d1de1087 NK |
1752 | /* arg->op.op (= token) will be freed at out_free */ |
1753 | arg->op.op = NULL; | |
14ffde0e VN |
1754 | goto out_free; |
1755 | } | |
f7d82350 SR |
1756 | |
1757 | type = read_token_item(&token); | |
1758 | *tok = token; | |
1759 | ||
1760 | /* could just be a type pointer */ | |
1761 | if ((strcmp(arg->op.op, "*") == 0) && | |
1762 | type == EVENT_DELIM && (strcmp(token, ")") == 0)) { | |
d286447f NK |
1763 | char *new_atom; |
1764 | ||
f7d82350 SR |
1765 | if (left->type != PRINT_ATOM) |
1766 | die("bad pointer type"); | |
d286447f | 1767 | new_atom = realloc(left->atom.atom, |
f7d82350 | 1768 | strlen(left->atom.atom) + 3); |
d286447f NK |
1769 | if (!new_atom) |
1770 | goto out_free; | |
1771 | ||
1772 | left->atom.atom = new_atom; | |
f7d82350 SR |
1773 | strcat(left->atom.atom, " *"); |
1774 | free(arg->op.op); | |
1775 | *arg = *left; | |
1776 | free(left); | |
1777 | ||
1778 | return type; | |
1779 | } | |
1780 | ||
1781 | right = alloc_arg(); | |
1782 | type = process_arg_token(event, right, tok, type); | |
1783 | arg->op.right = right; | |
1784 | ||
1785 | } else if (strcmp(token, "[") == 0) { | |
1786 | ||
1787 | left = alloc_arg(); | |
1788 | *left = *arg; | |
1789 | ||
1790 | arg->type = PRINT_OP; | |
1791 | arg->op.op = token; | |
1792 | arg->op.left = left; | |
1793 | ||
1794 | arg->op.prio = 0; | |
1795 | ||
1796 | type = process_array(event, arg, tok); | |
1797 | ||
1798 | } else { | |
1799 | do_warning("unknown op '%s'", token); | |
1800 | event->flags |= EVENT_FL_FAILED; | |
1801 | /* the arg is now the left side */ | |
1802 | goto out_free; | |
1803 | } | |
1804 | ||
1805 | if (type == EVENT_OP && strcmp(*tok, ":") != 0) { | |
1806 | int prio; | |
1807 | ||
1808 | /* higher prios need to be closer to the root */ | |
1809 | prio = get_op_prio(*tok); | |
1810 | ||
1811 | if (prio > arg->op.prio) | |
1812 | return process_op(event, arg, tok); | |
1813 | ||
1814 | return process_op(event, right, tok); | |
1815 | } | |
1816 | ||
1817 | return type; | |
1818 | ||
1819 | out_free: | |
1820 | free_token(token); | |
1821 | *tok = NULL; | |
1822 | return EVENT_ERROR; | |
1823 | } | |
1824 | ||
1825 | static enum event_type | |
1826 | process_entry(struct event_format *event __unused, struct print_arg *arg, | |
1827 | char **tok) | |
1828 | { | |
1829 | enum event_type type; | |
1830 | char *field; | |
1831 | char *token; | |
1832 | ||
1833 | if (read_expected(EVENT_OP, "->") < 0) | |
1834 | goto out_err; | |
1835 | ||
1836 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
1837 | goto out_free; | |
1838 | field = token; | |
1839 | ||
1840 | arg->type = PRINT_FIELD; | |
1841 | arg->field.name = field; | |
1842 | ||
5205aec9 TZ |
1843 | if (is_flag_field) { |
1844 | arg->field.field = pevent_find_any_field(event, arg->field.name); | |
1845 | arg->field.field->flags |= FIELD_IS_FLAG; | |
1846 | is_flag_field = 0; | |
1847 | } else if (is_symbolic_field) { | |
1848 | arg->field.field = pevent_find_any_field(event, arg->field.name); | |
1849 | arg->field.field->flags |= FIELD_IS_SYMBOLIC; | |
1850 | is_symbolic_field = 0; | |
1851 | } | |
1852 | ||
f7d82350 SR |
1853 | type = read_token(&token); |
1854 | *tok = token; | |
1855 | ||
1856 | return type; | |
1857 | ||
1858 | out_free: | |
1859 | free_token(token); | |
1860 | out_err: | |
1861 | *tok = NULL; | |
1862 | return EVENT_ERROR; | |
1863 | } | |
1864 | ||
1865 | static char *arg_eval (struct print_arg *arg); | |
1866 | ||
1867 | static unsigned long long | |
1868 | eval_type_str(unsigned long long val, const char *type, int pointer) | |
1869 | { | |
1870 | int sign = 0; | |
1871 | char *ref; | |
1872 | int len; | |
1873 | ||
1874 | len = strlen(type); | |
1875 | ||
1876 | if (pointer) { | |
1877 | ||
1878 | if (type[len-1] != '*') { | |
1879 | do_warning("pointer expected with non pointer type"); | |
1880 | return val; | |
1881 | } | |
1882 | ||
1883 | ref = malloc_or_die(len); | |
1884 | memcpy(ref, type, len); | |
1885 | ||
1886 | /* chop off the " *" */ | |
1887 | ref[len - 2] = 0; | |
1888 | ||
1889 | val = eval_type_str(val, ref, 0); | |
1890 | free(ref); | |
1891 | return val; | |
1892 | } | |
1893 | ||
1894 | /* check if this is a pointer */ | |
1895 | if (type[len - 1] == '*') | |
1896 | return val; | |
1897 | ||
1898 | /* Try to figure out the arg size*/ | |
1899 | if (strncmp(type, "struct", 6) == 0) | |
1900 | /* all bets off */ | |
1901 | return val; | |
1902 | ||
1903 | if (strcmp(type, "u8") == 0) | |
1904 | return val & 0xff; | |
1905 | ||
1906 | if (strcmp(type, "u16") == 0) | |
1907 | return val & 0xffff; | |
1908 | ||
1909 | if (strcmp(type, "u32") == 0) | |
1910 | return val & 0xffffffff; | |
1911 | ||
1912 | if (strcmp(type, "u64") == 0 || | |
1913 | strcmp(type, "s64")) | |
1914 | return val; | |
1915 | ||
1916 | if (strcmp(type, "s8") == 0) | |
1917 | return (unsigned long long)(char)val & 0xff; | |
1918 | ||
1919 | if (strcmp(type, "s16") == 0) | |
1920 | return (unsigned long long)(short)val & 0xffff; | |
1921 | ||
1922 | if (strcmp(type, "s32") == 0) | |
1923 | return (unsigned long long)(int)val & 0xffffffff; | |
1924 | ||
1925 | if (strncmp(type, "unsigned ", 9) == 0) { | |
1926 | sign = 0; | |
1927 | type += 9; | |
1928 | } | |
1929 | ||
1930 | if (strcmp(type, "char") == 0) { | |
1931 | if (sign) | |
1932 | return (unsigned long long)(char)val & 0xff; | |
1933 | else | |
1934 | return val & 0xff; | |
1935 | } | |
1936 | ||
1937 | if (strcmp(type, "short") == 0) { | |
1938 | if (sign) | |
1939 | return (unsigned long long)(short)val & 0xffff; | |
1940 | else | |
1941 | return val & 0xffff; | |
1942 | } | |
1943 | ||
1944 | if (strcmp(type, "int") == 0) { | |
1945 | if (sign) | |
1946 | return (unsigned long long)(int)val & 0xffffffff; | |
1947 | else | |
1948 | return val & 0xffffffff; | |
1949 | } | |
1950 | ||
1951 | return val; | |
1952 | } | |
1953 | ||
1954 | /* | |
1955 | * Try to figure out the type. | |
1956 | */ | |
1957 | static unsigned long long | |
1958 | eval_type(unsigned long long val, struct print_arg *arg, int pointer) | |
1959 | { | |
1960 | if (arg->type != PRINT_TYPE) | |
1961 | die("expected type argument"); | |
1962 | ||
1963 | return eval_type_str(val, arg->typecast.type, pointer); | |
1964 | } | |
1965 | ||
d69afed5 | 1966 | static int arg_num_eval(struct print_arg *arg, long long *val) |
f7d82350 SR |
1967 | { |
1968 | long long left, right; | |
d69afed5 | 1969 | int ret = 1; |
f7d82350 SR |
1970 | |
1971 | switch (arg->type) { | |
1972 | case PRINT_ATOM: | |
d69afed5 | 1973 | *val = strtoll(arg->atom.atom, NULL, 0); |
f7d82350 SR |
1974 | break; |
1975 | case PRINT_TYPE: | |
d69afed5 VN |
1976 | ret = arg_num_eval(arg->typecast.item, val); |
1977 | if (!ret) | |
1978 | break; | |
1979 | *val = eval_type(*val, arg, 0); | |
f7d82350 SR |
1980 | break; |
1981 | case PRINT_OP: | |
1982 | switch (arg->op.op[0]) { | |
1983 | case '|': | |
d69afed5 VN |
1984 | ret = arg_num_eval(arg->op.left, &left); |
1985 | if (!ret) | |
1986 | break; | |
1987 | ret = arg_num_eval(arg->op.right, &right); | |
1988 | if (!ret) | |
1989 | break; | |
f7d82350 | 1990 | if (arg->op.op[1]) |
d69afed5 | 1991 | *val = left || right; |
f7d82350 | 1992 | else |
d69afed5 | 1993 | *val = left | right; |
f7d82350 SR |
1994 | break; |
1995 | case '&': | |
d69afed5 VN |
1996 | ret = arg_num_eval(arg->op.left, &left); |
1997 | if (!ret) | |
1998 | break; | |
1999 | ret = arg_num_eval(arg->op.right, &right); | |
2000 | if (!ret) | |
2001 | break; | |
f7d82350 | 2002 | if (arg->op.op[1]) |
d69afed5 | 2003 | *val = left && right; |
f7d82350 | 2004 | else |
d69afed5 | 2005 | *val = left & right; |
f7d82350 SR |
2006 | break; |
2007 | case '<': | |
d69afed5 VN |
2008 | ret = arg_num_eval(arg->op.left, &left); |
2009 | if (!ret) | |
2010 | break; | |
2011 | ret = arg_num_eval(arg->op.right, &right); | |
2012 | if (!ret) | |
2013 | break; | |
f7d82350 SR |
2014 | switch (arg->op.op[1]) { |
2015 | case 0: | |
d69afed5 | 2016 | *val = left < right; |
f7d82350 SR |
2017 | break; |
2018 | case '<': | |
d69afed5 | 2019 | *val = left << right; |
f7d82350 SR |
2020 | break; |
2021 | case '=': | |
d69afed5 | 2022 | *val = left <= right; |
f7d82350 SR |
2023 | break; |
2024 | default: | |
d69afed5 VN |
2025 | do_warning("unknown op '%s'", arg->op.op); |
2026 | ret = 0; | |
f7d82350 SR |
2027 | } |
2028 | break; | |
2029 | case '>': | |
d69afed5 VN |
2030 | ret = arg_num_eval(arg->op.left, &left); |
2031 | if (!ret) | |
2032 | break; | |
2033 | ret = arg_num_eval(arg->op.right, &right); | |
2034 | if (!ret) | |
2035 | break; | |
f7d82350 SR |
2036 | switch (arg->op.op[1]) { |
2037 | case 0: | |
d69afed5 | 2038 | *val = left > right; |
f7d82350 SR |
2039 | break; |
2040 | case '>': | |
d69afed5 | 2041 | *val = left >> right; |
f7d82350 SR |
2042 | break; |
2043 | case '=': | |
d69afed5 | 2044 | *val = left >= right; |
f7d82350 SR |
2045 | break; |
2046 | default: | |
d69afed5 VN |
2047 | do_warning("unknown op '%s'", arg->op.op); |
2048 | ret = 0; | |
f7d82350 SR |
2049 | } |
2050 | break; | |
2051 | case '=': | |
d69afed5 VN |
2052 | ret = arg_num_eval(arg->op.left, &left); |
2053 | if (!ret) | |
2054 | break; | |
2055 | ret = arg_num_eval(arg->op.right, &right); | |
2056 | if (!ret) | |
2057 | break; | |
f7d82350 | 2058 | |
d69afed5 VN |
2059 | if (arg->op.op[1] != '=') { |
2060 | do_warning("unknown op '%s'", arg->op.op); | |
2061 | ret = 0; | |
2062 | } else | |
2063 | *val = left == right; | |
f7d82350 SR |
2064 | break; |
2065 | case '!': | |
d69afed5 VN |
2066 | ret = arg_num_eval(arg->op.left, &left); |
2067 | if (!ret) | |
2068 | break; | |
2069 | ret = arg_num_eval(arg->op.right, &right); | |
2070 | if (!ret) | |
2071 | break; | |
f7d82350 SR |
2072 | |
2073 | switch (arg->op.op[1]) { | |
2074 | case '=': | |
d69afed5 | 2075 | *val = left != right; |
f7d82350 SR |
2076 | break; |
2077 | default: | |
d69afed5 VN |
2078 | do_warning("unknown op '%s'", arg->op.op); |
2079 | ret = 0; | |
f7d82350 SR |
2080 | } |
2081 | break; | |
2082 | case '-': | |
2083 | /* check for negative */ | |
2084 | if (arg->op.left->type == PRINT_NULL) | |
2085 | left = 0; | |
2086 | else | |
d69afed5 VN |
2087 | ret = arg_num_eval(arg->op.left, &left); |
2088 | if (!ret) | |
2089 | break; | |
2090 | ret = arg_num_eval(arg->op.right, &right); | |
2091 | if (!ret) | |
2092 | break; | |
2093 | *val = left - right; | |
f7d82350 | 2094 | break; |
b4828598 VN |
2095 | case '+': |
2096 | if (arg->op.left->type == PRINT_NULL) | |
2097 | left = 0; | |
2098 | else | |
2099 | ret = arg_num_eval(arg->op.left, &left); | |
2100 | if (!ret) | |
2101 | break; | |
2102 | ret = arg_num_eval(arg->op.right, &right); | |
2103 | if (!ret) | |
2104 | break; | |
2105 | *val = left + right; | |
2106 | break; | |
f7d82350 | 2107 | default: |
d69afed5 VN |
2108 | do_warning("unknown op '%s'", arg->op.op); |
2109 | ret = 0; | |
f7d82350 SR |
2110 | } |
2111 | break; | |
2112 | ||
2113 | case PRINT_NULL: | |
2114 | case PRINT_FIELD ... PRINT_SYMBOL: | |
2115 | case PRINT_STRING: | |
2116 | case PRINT_BSTRING: | |
2117 | default: | |
d69afed5 VN |
2118 | do_warning("invalid eval type %d", arg->type); |
2119 | ret = 0; | |
f7d82350 SR |
2120 | |
2121 | } | |
d69afed5 | 2122 | return ret; |
f7d82350 SR |
2123 | } |
2124 | ||
2125 | static char *arg_eval (struct print_arg *arg) | |
2126 | { | |
2127 | long long val; | |
2128 | static char buf[20]; | |
2129 | ||
2130 | switch (arg->type) { | |
2131 | case PRINT_ATOM: | |
2132 | return arg->atom.atom; | |
2133 | case PRINT_TYPE: | |
2134 | return arg_eval(arg->typecast.item); | |
2135 | case PRINT_OP: | |
d69afed5 VN |
2136 | if (!arg_num_eval(arg, &val)) |
2137 | break; | |
f7d82350 SR |
2138 | sprintf(buf, "%lld", val); |
2139 | return buf; | |
2140 | ||
2141 | case PRINT_NULL: | |
2142 | case PRINT_FIELD ... PRINT_SYMBOL: | |
2143 | case PRINT_STRING: | |
2144 | case PRINT_BSTRING: | |
2145 | default: | |
2146 | die("invalid eval type %d", arg->type); | |
2147 | break; | |
2148 | } | |
2149 | ||
2150 | return NULL; | |
2151 | } | |
2152 | ||
2153 | static enum event_type | |
2154 | process_fields(struct event_format *event, struct print_flag_sym **list, char **tok) | |
2155 | { | |
2156 | enum event_type type; | |
2157 | struct print_arg *arg = NULL; | |
2158 | struct print_flag_sym *field; | |
2159 | char *token = *tok; | |
2160 | char *value; | |
2161 | ||
2162 | do { | |
2163 | free_token(token); | |
2164 | type = read_token_item(&token); | |
2165 | if (test_type_token(type, token, EVENT_OP, "{")) | |
2166 | break; | |
2167 | ||
2168 | arg = alloc_arg(); | |
2169 | ||
2170 | free_token(token); | |
2171 | type = process_arg(event, arg, &token); | |
00b9da72 SH |
2172 | |
2173 | if (type == EVENT_OP) | |
2174 | type = process_op(event, arg, &token); | |
2175 | ||
2176 | if (type == EVENT_ERROR) | |
2177 | goto out_free; | |
2178 | ||
f7d82350 SR |
2179 | if (test_type_token(type, token, EVENT_DELIM, ",")) |
2180 | goto out_free; | |
2181 | ||
2182 | field = malloc_or_die(sizeof(*field)); | |
54a36258 | 2183 | memset(field, 0, sizeof(*field)); |
f7d82350 SR |
2184 | |
2185 | value = arg_eval(arg); | |
d69afed5 VN |
2186 | if (value == NULL) |
2187 | goto out_free; | |
f7d82350 | 2188 | field->value = strdup(value); |
ca63858e NK |
2189 | if (field->value == NULL) |
2190 | goto out_free; | |
f7d82350 SR |
2191 | |
2192 | free_arg(arg); | |
2193 | arg = alloc_arg(); | |
2194 | ||
2195 | free_token(token); | |
2196 | type = process_arg(event, arg, &token); | |
2197 | if (test_type_token(type, token, EVENT_OP, "}")) | |
2198 | goto out_free; | |
2199 | ||
2200 | value = arg_eval(arg); | |
d69afed5 VN |
2201 | if (value == NULL) |
2202 | goto out_free; | |
f7d82350 | 2203 | field->str = strdup(value); |
ca63858e NK |
2204 | if (field->str == NULL) |
2205 | goto out_free; | |
f7d82350 SR |
2206 | free_arg(arg); |
2207 | arg = NULL; | |
2208 | ||
2209 | *list = field; | |
2210 | list = &field->next; | |
2211 | ||
2212 | free_token(token); | |
2213 | type = read_token_item(&token); | |
2214 | } while (type == EVENT_DELIM && strcmp(token, ",") == 0); | |
2215 | ||
2216 | *tok = token; | |
2217 | return type; | |
2218 | ||
2219 | out_free: | |
2220 | free_arg(arg); | |
2221 | free_token(token); | |
2222 | *tok = NULL; | |
2223 | ||
2224 | return EVENT_ERROR; | |
2225 | } | |
2226 | ||
2227 | static enum event_type | |
2228 | process_flags(struct event_format *event, struct print_arg *arg, char **tok) | |
2229 | { | |
2230 | struct print_arg *field; | |
2231 | enum event_type type; | |
2232 | char *token; | |
2233 | ||
2234 | memset(arg, 0, sizeof(*arg)); | |
2235 | arg->type = PRINT_FLAGS; | |
2236 | ||
2237 | field = alloc_arg(); | |
2238 | ||
2239 | type = process_arg(event, field, &token); | |
2240 | ||
2241 | /* Handle operations in the first argument */ | |
2242 | while (type == EVENT_OP) | |
2243 | type = process_op(event, field, &token); | |
2244 | ||
2245 | if (test_type_token(type, token, EVENT_DELIM, ",")) | |
2246 | goto out_free; | |
2247 | free_token(token); | |
2248 | ||
2249 | arg->flags.field = field; | |
2250 | ||
2251 | type = read_token_item(&token); | |
2252 | if (event_item_type(type)) { | |
2253 | arg->flags.delim = token; | |
2254 | type = read_token_item(&token); | |
2255 | } | |
2256 | ||
2257 | if (test_type_token(type, token, EVENT_DELIM, ",")) | |
2258 | goto out_free; | |
2259 | ||
2260 | type = process_fields(event, &arg->flags.flags, &token); | |
2261 | if (test_type_token(type, token, EVENT_DELIM, ")")) | |
2262 | goto out_free; | |
2263 | ||
2264 | free_token(token); | |
2265 | type = read_token_item(tok); | |
2266 | return type; | |
2267 | ||
2268 | out_free: | |
2269 | free_token(token); | |
2270 | *tok = NULL; | |
2271 | return EVENT_ERROR; | |
2272 | } | |
2273 | ||
2274 | static enum event_type | |
2275 | process_symbols(struct event_format *event, struct print_arg *arg, char **tok) | |
2276 | { | |
2277 | struct print_arg *field; | |
2278 | enum event_type type; | |
2279 | char *token; | |
2280 | ||
2281 | memset(arg, 0, sizeof(*arg)); | |
2282 | arg->type = PRINT_SYMBOL; | |
2283 | ||
2284 | field = alloc_arg(); | |
2285 | ||
2286 | type = process_arg(event, field, &token); | |
2287 | if (test_type_token(type, token, EVENT_DELIM, ",")) | |
2288 | goto out_free; | |
2289 | ||
2290 | arg->symbol.field = field; | |
2291 | ||
2292 | type = process_fields(event, &arg->symbol.symbols, &token); | |
2293 | if (test_type_token(type, token, EVENT_DELIM, ")")) | |
2294 | goto out_free; | |
2295 | ||
2296 | free_token(token); | |
2297 | type = read_token_item(tok); | |
2298 | return type; | |
2299 | ||
2300 | out_free: | |
2301 | free_token(token); | |
2302 | *tok = NULL; | |
2303 | return EVENT_ERROR; | |
2304 | } | |
2305 | ||
e080e6f1 NK |
2306 | static enum event_type |
2307 | process_hex(struct event_format *event, struct print_arg *arg, char **tok) | |
2308 | { | |
2309 | struct print_arg *field; | |
2310 | enum event_type type; | |
2311 | char *token; | |
2312 | ||
2313 | memset(arg, 0, sizeof(*arg)); | |
2314 | arg->type = PRINT_HEX; | |
2315 | ||
2316 | field = alloc_arg(); | |
2317 | type = process_arg(event, field, &token); | |
2318 | ||
2319 | if (test_type_token(type, token, EVENT_DELIM, ",")) | |
2320 | goto out_free; | |
2321 | ||
2322 | arg->hex.field = field; | |
2323 | ||
2324 | free_token(token); | |
2325 | ||
2326 | field = alloc_arg(); | |
2327 | type = process_arg(event, field, &token); | |
2328 | ||
2329 | if (test_type_token(type, token, EVENT_DELIM, ")")) | |
2330 | goto out_free; | |
2331 | ||
2332 | arg->hex.size = field; | |
2333 | ||
2334 | free_token(token); | |
2335 | type = read_token_item(tok); | |
2336 | return type; | |
2337 | ||
2338 | out_free: | |
2339 | free_arg(field); | |
2340 | free_token(token); | |
2341 | *tok = NULL; | |
2342 | return EVENT_ERROR; | |
2343 | } | |
2344 | ||
f7d82350 SR |
2345 | static enum event_type |
2346 | process_dynamic_array(struct event_format *event, struct print_arg *arg, char **tok) | |
2347 | { | |
2348 | struct format_field *field; | |
2349 | enum event_type type; | |
2350 | char *token; | |
2351 | ||
2352 | memset(arg, 0, sizeof(*arg)); | |
2353 | arg->type = PRINT_DYNAMIC_ARRAY; | |
2354 | ||
2355 | /* | |
2356 | * The item within the parenthesis is another field that holds | |
2357 | * the index into where the array starts. | |
2358 | */ | |
2359 | type = read_token(&token); | |
2360 | *tok = token; | |
2361 | if (type != EVENT_ITEM) | |
2362 | goto out_free; | |
2363 | ||
2364 | /* Find the field */ | |
2365 | ||
2366 | field = pevent_find_field(event, token); | |
2367 | if (!field) | |
2368 | goto out_free; | |
2369 | ||
2370 | arg->dynarray.field = field; | |
2371 | arg->dynarray.index = 0; | |
2372 | ||
2373 | if (read_expected(EVENT_DELIM, ")") < 0) | |
2374 | goto out_free; | |
2375 | ||
2376 | free_token(token); | |
2377 | type = read_token_item(&token); | |
2378 | *tok = token; | |
2379 | if (type != EVENT_OP || strcmp(token, "[") != 0) | |
2380 | return type; | |
2381 | ||
2382 | free_token(token); | |
2383 | arg = alloc_arg(); | |
2384 | type = process_arg(event, arg, &token); | |
2385 | if (type == EVENT_ERROR) | |
b3511d05 | 2386 | goto out_free_arg; |
f7d82350 SR |
2387 | |
2388 | if (!test_type_token(type, token, EVENT_OP, "]")) | |
b3511d05 | 2389 | goto out_free_arg; |
f7d82350 SR |
2390 | |
2391 | free_token(token); | |
2392 | type = read_token_item(tok); | |
2393 | return type; | |
2394 | ||
b3511d05 NK |
2395 | out_free_arg: |
2396 | free_arg(arg); | |
f7d82350 | 2397 | out_free: |
f7d82350 SR |
2398 | free_token(token); |
2399 | *tok = NULL; | |
2400 | return EVENT_ERROR; | |
2401 | } | |
2402 | ||
2403 | static enum event_type | |
2404 | process_paren(struct event_format *event, struct print_arg *arg, char **tok) | |
2405 | { | |
2406 | struct print_arg *item_arg; | |
2407 | enum event_type type; | |
2408 | char *token; | |
2409 | ||
2410 | type = process_arg(event, arg, &token); | |
2411 | ||
2412 | if (type == EVENT_ERROR) | |
2413 | goto out_free; | |
2414 | ||
2415 | if (type == EVENT_OP) | |
2416 | type = process_op(event, arg, &token); | |
2417 | ||
2418 | if (type == EVENT_ERROR) | |
2419 | goto out_free; | |
2420 | ||
2421 | if (test_type_token(type, token, EVENT_DELIM, ")")) | |
2422 | goto out_free; | |
2423 | ||
2424 | free_token(token); | |
2425 | type = read_token_item(&token); | |
2426 | ||
2427 | /* | |
2428 | * If the next token is an item or another open paren, then | |
2429 | * this was a typecast. | |
2430 | */ | |
2431 | if (event_item_type(type) || | |
2432 | (type == EVENT_DELIM && strcmp(token, "(") == 0)) { | |
2433 | ||
2434 | /* make this a typecast and contine */ | |
2435 | ||
2436 | /* prevous must be an atom */ | |
2437 | if (arg->type != PRINT_ATOM) | |
2438 | die("previous needed to be PRINT_ATOM"); | |
2439 | ||
2440 | item_arg = alloc_arg(); | |
2441 | ||
2442 | arg->type = PRINT_TYPE; | |
2443 | arg->typecast.type = arg->atom.atom; | |
2444 | arg->typecast.item = item_arg; | |
2445 | type = process_arg_token(event, item_arg, &token, type); | |
2446 | ||
2447 | } | |
2448 | ||
2449 | *tok = token; | |
2450 | return type; | |
2451 | ||
2452 | out_free: | |
2453 | free_token(token); | |
2454 | *tok = NULL; | |
2455 | return EVENT_ERROR; | |
2456 | } | |
2457 | ||
2458 | ||
2459 | static enum event_type | |
2460 | process_str(struct event_format *event __unused, struct print_arg *arg, char **tok) | |
2461 | { | |
2462 | enum event_type type; | |
2463 | char *token; | |
2464 | ||
2465 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
2466 | goto out_free; | |
2467 | ||
2468 | arg->type = PRINT_STRING; | |
2469 | arg->string.string = token; | |
2470 | arg->string.offset = -1; | |
2471 | ||
2472 | if (read_expected(EVENT_DELIM, ")") < 0) | |
2473 | goto out_err; | |
2474 | ||
2475 | type = read_token(&token); | |
2476 | *tok = token; | |
2477 | ||
2478 | return type; | |
2479 | ||
2480 | out_free: | |
2481 | free_token(token); | |
2482 | out_err: | |
2483 | *tok = NULL; | |
2484 | return EVENT_ERROR; | |
2485 | } | |
2486 | ||
2487 | static struct pevent_function_handler * | |
2488 | find_func_handler(struct pevent *pevent, char *func_name) | |
2489 | { | |
2490 | struct pevent_function_handler *func; | |
2491 | ||
2492 | for (func = pevent->func_handlers; func; func = func->next) { | |
2493 | if (strcmp(func->name, func_name) == 0) | |
2494 | break; | |
2495 | } | |
2496 | ||
2497 | return func; | |
2498 | } | |
2499 | ||
2500 | static void remove_func_handler(struct pevent *pevent, char *func_name) | |
2501 | { | |
2502 | struct pevent_function_handler *func; | |
2503 | struct pevent_function_handler **next; | |
2504 | ||
2505 | next = &pevent->func_handlers; | |
2506 | while ((func = *next)) { | |
2507 | if (strcmp(func->name, func_name) == 0) { | |
2508 | *next = func->next; | |
2509 | free_func_handle(func); | |
2510 | break; | |
2511 | } | |
2512 | next = &func->next; | |
2513 | } | |
2514 | } | |
2515 | ||
2516 | static enum event_type | |
2517 | process_func_handler(struct event_format *event, struct pevent_function_handler *func, | |
2518 | struct print_arg *arg, char **tok) | |
2519 | { | |
2520 | struct print_arg **next_arg; | |
2521 | struct print_arg *farg; | |
2522 | enum event_type type; | |
2523 | char *token; | |
2524 | char *test; | |
2525 | int i; | |
2526 | ||
2527 | arg->type = PRINT_FUNC; | |
2528 | arg->func.func = func; | |
2529 | ||
2530 | *tok = NULL; | |
2531 | ||
2532 | next_arg = &(arg->func.args); | |
2533 | for (i = 0; i < func->nr_args; i++) { | |
2534 | farg = alloc_arg(); | |
2535 | type = process_arg(event, farg, &token); | |
2536 | if (i < (func->nr_args - 1)) | |
2537 | test = ","; | |
2538 | else | |
2539 | test = ")"; | |
2540 | ||
2541 | if (test_type_token(type, token, EVENT_DELIM, test)) { | |
2542 | free_arg(farg); | |
2543 | free_token(token); | |
2544 | return EVENT_ERROR; | |
2545 | } | |
2546 | ||
2547 | *next_arg = farg; | |
2548 | next_arg = &(farg->next); | |
2549 | free_token(token); | |
2550 | } | |
2551 | ||
2552 | type = read_token(&token); | |
2553 | *tok = token; | |
2554 | ||
2555 | return type; | |
2556 | } | |
2557 | ||
2558 | static enum event_type | |
2559 | process_function(struct event_format *event, struct print_arg *arg, | |
2560 | char *token, char **tok) | |
2561 | { | |
2562 | struct pevent_function_handler *func; | |
2563 | ||
2564 | if (strcmp(token, "__print_flags") == 0) { | |
2565 | free_token(token); | |
5205aec9 | 2566 | is_flag_field = 1; |
f7d82350 SR |
2567 | return process_flags(event, arg, tok); |
2568 | } | |
2569 | if (strcmp(token, "__print_symbolic") == 0) { | |
2570 | free_token(token); | |
5205aec9 | 2571 | is_symbolic_field = 1; |
f7d82350 SR |
2572 | return process_symbols(event, arg, tok); |
2573 | } | |
e080e6f1 NK |
2574 | if (strcmp(token, "__print_hex") == 0) { |
2575 | free_token(token); | |
2576 | return process_hex(event, arg, tok); | |
2577 | } | |
f7d82350 SR |
2578 | if (strcmp(token, "__get_str") == 0) { |
2579 | free_token(token); | |
2580 | return process_str(event, arg, tok); | |
2581 | } | |
2582 | if (strcmp(token, "__get_dynamic_array") == 0) { | |
2583 | free_token(token); | |
2584 | return process_dynamic_array(event, arg, tok); | |
2585 | } | |
2586 | ||
2587 | func = find_func_handler(event->pevent, token); | |
2588 | if (func) { | |
2589 | free_token(token); | |
2590 | return process_func_handler(event, func, arg, tok); | |
2591 | } | |
2592 | ||
2593 | do_warning("function %s not defined", token); | |
2594 | free_token(token); | |
2595 | return EVENT_ERROR; | |
2596 | } | |
2597 | ||
2598 | static enum event_type | |
2599 | process_arg_token(struct event_format *event, struct print_arg *arg, | |
2600 | char **tok, enum event_type type) | |
2601 | { | |
2602 | char *token; | |
2603 | char *atom; | |
2604 | ||
2605 | token = *tok; | |
2606 | ||
2607 | switch (type) { | |
2608 | case EVENT_ITEM: | |
2609 | if (strcmp(token, "REC") == 0) { | |
2610 | free_token(token); | |
2611 | type = process_entry(event, arg, &token); | |
2612 | break; | |
2613 | } | |
2614 | atom = token; | |
2615 | /* test the next token */ | |
2616 | type = read_token_item(&token); | |
2617 | ||
2618 | /* | |
2619 | * If the next token is a parenthesis, then this | |
2620 | * is a function. | |
2621 | */ | |
2622 | if (type == EVENT_DELIM && strcmp(token, "(") == 0) { | |
2623 | free_token(token); | |
2624 | token = NULL; | |
2625 | /* this will free atom. */ | |
2626 | type = process_function(event, arg, atom, &token); | |
2627 | break; | |
2628 | } | |
2629 | /* atoms can be more than one token long */ | |
2630 | while (type == EVENT_ITEM) { | |
d286447f NK |
2631 | char *new_atom; |
2632 | new_atom = realloc(atom, | |
2633 | strlen(atom) + strlen(token) + 2); | |
2634 | if (!new_atom) { | |
2635 | free(atom); | |
2636 | *tok = NULL; | |
2637 | free_token(token); | |
2638 | return EVENT_ERROR; | |
2639 | } | |
2640 | atom = new_atom; | |
f7d82350 SR |
2641 | strcat(atom, " "); |
2642 | strcat(atom, token); | |
2643 | free_token(token); | |
2644 | type = read_token_item(&token); | |
2645 | } | |
2646 | ||
2647 | arg->type = PRINT_ATOM; | |
2648 | arg->atom.atom = atom; | |
2649 | break; | |
2650 | ||
2651 | case EVENT_DQUOTE: | |
2652 | case EVENT_SQUOTE: | |
2653 | arg->type = PRINT_ATOM; | |
2654 | arg->atom.atom = token; | |
2655 | type = read_token_item(&token); | |
2656 | break; | |
2657 | case EVENT_DELIM: | |
2658 | if (strcmp(token, "(") == 0) { | |
2659 | free_token(token); | |
2660 | type = process_paren(event, arg, &token); | |
2661 | break; | |
2662 | } | |
2663 | case EVENT_OP: | |
2664 | /* handle single ops */ | |
2665 | arg->type = PRINT_OP; | |
2666 | arg->op.op = token; | |
2667 | arg->op.left = NULL; | |
2668 | type = process_op(event, arg, &token); | |
2669 | ||
2670 | /* On error, the op is freed */ | |
2671 | if (type == EVENT_ERROR) | |
2672 | arg->op.op = NULL; | |
2673 | ||
2674 | /* return error type if errored */ | |
2675 | break; | |
2676 | ||
2677 | case EVENT_ERROR ... EVENT_NEWLINE: | |
2678 | default: | |
2679 | die("unexpected type %d", type); | |
2680 | } | |
2681 | *tok = token; | |
2682 | ||
2683 | return type; | |
2684 | } | |
2685 | ||
2686 | static int event_read_print_args(struct event_format *event, struct print_arg **list) | |
2687 | { | |
2688 | enum event_type type = EVENT_ERROR; | |
2689 | struct print_arg *arg; | |
2690 | char *token; | |
2691 | int args = 0; | |
2692 | ||
2693 | do { | |
2694 | if (type == EVENT_NEWLINE) { | |
2695 | type = read_token_item(&token); | |
2696 | continue; | |
2697 | } | |
2698 | ||
2699 | arg = alloc_arg(); | |
2700 | ||
2701 | type = process_arg(event, arg, &token); | |
2702 | ||
2703 | if (type == EVENT_ERROR) { | |
2704 | free_token(token); | |
2705 | free_arg(arg); | |
2706 | return -1; | |
2707 | } | |
2708 | ||
2709 | *list = arg; | |
2710 | args++; | |
2711 | ||
2712 | if (type == EVENT_OP) { | |
2713 | type = process_op(event, arg, &token); | |
2714 | free_token(token); | |
2715 | if (type == EVENT_ERROR) { | |
2716 | *list = NULL; | |
2717 | free_arg(arg); | |
2718 | return -1; | |
2719 | } | |
2720 | list = &arg->next; | |
2721 | continue; | |
2722 | } | |
2723 | ||
2724 | if (type == EVENT_DELIM && strcmp(token, ",") == 0) { | |
2725 | free_token(token); | |
2726 | *list = arg; | |
2727 | list = &arg->next; | |
2728 | continue; | |
2729 | } | |
2730 | break; | |
2731 | } while (type != EVENT_NONE); | |
2732 | ||
2733 | if (type != EVENT_NONE && type != EVENT_ERROR) | |
2734 | free_token(token); | |
2735 | ||
2736 | return args; | |
2737 | } | |
2738 | ||
2739 | static int event_read_print(struct event_format *event) | |
2740 | { | |
2741 | enum event_type type; | |
2742 | char *token; | |
2743 | int ret; | |
2744 | ||
2745 | if (read_expected_item(EVENT_ITEM, "print") < 0) | |
2746 | return -1; | |
2747 | ||
2748 | if (read_expected(EVENT_ITEM, "fmt") < 0) | |
2749 | return -1; | |
2750 | ||
2751 | if (read_expected(EVENT_OP, ":") < 0) | |
2752 | return -1; | |
2753 | ||
2754 | if (read_expect_type(EVENT_DQUOTE, &token) < 0) | |
2755 | goto fail; | |
2756 | ||
2757 | concat: | |
2758 | event->print_fmt.format = token; | |
2759 | event->print_fmt.args = NULL; | |
2760 | ||
2761 | /* ok to have no arg */ | |
2762 | type = read_token_item(&token); | |
2763 | ||
2764 | if (type == EVENT_NONE) | |
2765 | return 0; | |
2766 | ||
2767 | /* Handle concatenation of print lines */ | |
2768 | if (type == EVENT_DQUOTE) { | |
2769 | char *cat; | |
2770 | ||
2771 | cat = malloc_or_die(strlen(event->print_fmt.format) + | |
2772 | strlen(token) + 1); | |
2773 | strcpy(cat, event->print_fmt.format); | |
2774 | strcat(cat, token); | |
2775 | free_token(token); | |
2776 | free_token(event->print_fmt.format); | |
2777 | event->print_fmt.format = NULL; | |
2778 | token = cat; | |
2779 | goto concat; | |
2780 | } | |
2781 | ||
2782 | if (test_type_token(type, token, EVENT_DELIM, ",")) | |
2783 | goto fail; | |
2784 | ||
2785 | free_token(token); | |
2786 | ||
2787 | ret = event_read_print_args(event, &event->print_fmt.args); | |
2788 | if (ret < 0) | |
2789 | return -1; | |
2790 | ||
2791 | return ret; | |
2792 | ||
2793 | fail: | |
2794 | free_token(token); | |
2795 | return -1; | |
2796 | } | |
2797 | ||
2798 | /** | |
2799 | * pevent_find_common_field - return a common field by event | |
2800 | * @event: handle for the event | |
2801 | * @name: the name of the common field to return | |
2802 | * | |
2803 | * Returns a common field from the event by the given @name. | |
2804 | * This only searchs the common fields and not all field. | |
2805 | */ | |
2806 | struct format_field * | |
2807 | pevent_find_common_field(struct event_format *event, const char *name) | |
2808 | { | |
2809 | struct format_field *format; | |
2810 | ||
2811 | for (format = event->format.common_fields; | |
2812 | format; format = format->next) { | |
2813 | if (strcmp(format->name, name) == 0) | |
2814 | break; | |
2815 | } | |
2816 | ||
2817 | return format; | |
2818 | } | |
2819 | ||
2820 | /** | |
2821 | * pevent_find_field - find a non-common field | |
2822 | * @event: handle for the event | |
2823 | * @name: the name of the non-common field | |
2824 | * | |
2825 | * Returns a non-common field by the given @name. | |
2826 | * This does not search common fields. | |
2827 | */ | |
2828 | struct format_field * | |
2829 | pevent_find_field(struct event_format *event, const char *name) | |
2830 | { | |
2831 | struct format_field *format; | |
2832 | ||
2833 | for (format = event->format.fields; | |
2834 | format; format = format->next) { | |
2835 | if (strcmp(format->name, name) == 0) | |
2836 | break; | |
2837 | } | |
2838 | ||
2839 | return format; | |
2840 | } | |
2841 | ||
2842 | /** | |
2843 | * pevent_find_any_field - find any field by name | |
2844 | * @event: handle for the event | |
2845 | * @name: the name of the field | |
2846 | * | |
2847 | * Returns a field by the given @name. | |
2848 | * This searchs the common field names first, then | |
2849 | * the non-common ones if a common one was not found. | |
2850 | */ | |
2851 | struct format_field * | |
2852 | pevent_find_any_field(struct event_format *event, const char *name) | |
2853 | { | |
2854 | struct format_field *format; | |
2855 | ||
2856 | format = pevent_find_common_field(event, name); | |
2857 | if (format) | |
2858 | return format; | |
2859 | return pevent_find_field(event, name); | |
2860 | } | |
2861 | ||
2862 | /** | |
2863 | * pevent_read_number - read a number from data | |
2864 | * @pevent: handle for the pevent | |
2865 | * @ptr: the raw data | |
2866 | * @size: the size of the data that holds the number | |
2867 | * | |
2868 | * Returns the number (converted to host) from the | |
2869 | * raw data. | |
2870 | */ | |
2871 | unsigned long long pevent_read_number(struct pevent *pevent, | |
2872 | const void *ptr, int size) | |
2873 | { | |
2874 | switch (size) { | |
2875 | case 1: | |
2876 | return *(unsigned char *)ptr; | |
2877 | case 2: | |
2878 | return data2host2(pevent, ptr); | |
2879 | case 4: | |
2880 | return data2host4(pevent, ptr); | |
2881 | case 8: | |
2882 | return data2host8(pevent, ptr); | |
2883 | default: | |
2884 | /* BUG! */ | |
2885 | return 0; | |
2886 | } | |
2887 | } | |
2888 | ||
2889 | /** | |
2890 | * pevent_read_number_field - read a number from data | |
2891 | * @field: a handle to the field | |
2892 | * @data: the raw data to read | |
2893 | * @value: the value to place the number in | |
2894 | * | |
2895 | * Reads raw data according to a field offset and size, | |
2896 | * and translates it into @value. | |
2897 | * | |
2898 | * Returns 0 on success, -1 otherwise. | |
2899 | */ | |
2900 | int pevent_read_number_field(struct format_field *field, const void *data, | |
2901 | unsigned long long *value) | |
2902 | { | |
2903 | if (!field) | |
2904 | return -1; | |
2905 | switch (field->size) { | |
2906 | case 1: | |
2907 | case 2: | |
2908 | case 4: | |
2909 | case 8: | |
2910 | *value = pevent_read_number(field->event->pevent, | |
2911 | data + field->offset, field->size); | |
2912 | return 0; | |
2913 | default: | |
2914 | return -1; | |
2915 | } | |
2916 | } | |
2917 | ||
2918 | static int get_common_info(struct pevent *pevent, | |
2919 | const char *type, int *offset, int *size) | |
2920 | { | |
2921 | struct event_format *event; | |
2922 | struct format_field *field; | |
2923 | ||
2924 | /* | |
2925 | * All events should have the same common elements. | |
2926 | * Pick any event to find where the type is; | |
2927 | */ | |
2928 | if (!pevent->events) | |
2929 | die("no event_list!"); | |
2930 | ||
2931 | event = pevent->events[0]; | |
2932 | field = pevent_find_common_field(event, type); | |
2933 | if (!field) | |
0866a97e | 2934 | return -1; |
f7d82350 SR |
2935 | |
2936 | *offset = field->offset; | |
2937 | *size = field->size; | |
2938 | ||
2939 | return 0; | |
2940 | } | |
2941 | ||
2942 | static int __parse_common(struct pevent *pevent, void *data, | |
2943 | int *size, int *offset, const char *name) | |
2944 | { | |
2945 | int ret; | |
2946 | ||
2947 | if (!*size) { | |
2948 | ret = get_common_info(pevent, name, offset, size); | |
2949 | if (ret < 0) | |
2950 | return ret; | |
2951 | } | |
2952 | return pevent_read_number(pevent, data + *offset, *size); | |
2953 | } | |
2954 | ||
2955 | static int trace_parse_common_type(struct pevent *pevent, void *data) | |
2956 | { | |
2957 | return __parse_common(pevent, data, | |
2958 | &pevent->type_size, &pevent->type_offset, | |
2959 | "common_type"); | |
2960 | } | |
2961 | ||
2962 | static int parse_common_pid(struct pevent *pevent, void *data) | |
2963 | { | |
2964 | return __parse_common(pevent, data, | |
2965 | &pevent->pid_size, &pevent->pid_offset, | |
2966 | "common_pid"); | |
2967 | } | |
2968 | ||
2969 | static int parse_common_pc(struct pevent *pevent, void *data) | |
2970 | { | |
2971 | return __parse_common(pevent, data, | |
2972 | &pevent->pc_size, &pevent->pc_offset, | |
2973 | "common_preempt_count"); | |
2974 | } | |
2975 | ||
2976 | static int parse_common_flags(struct pevent *pevent, void *data) | |
2977 | { | |
2978 | return __parse_common(pevent, data, | |
2979 | &pevent->flags_size, &pevent->flags_offset, | |
2980 | "common_flags"); | |
2981 | } | |
2982 | ||
2983 | static int parse_common_lock_depth(struct pevent *pevent, void *data) | |
2984 | { | |
0866a97e SR |
2985 | return __parse_common(pevent, data, |
2986 | &pevent->ld_size, &pevent->ld_offset, | |
2987 | "common_lock_depth"); | |
2988 | } | |
f7d82350 | 2989 | |
0866a97e SR |
2990 | static int parse_common_migrate_disable(struct pevent *pevent, void *data) |
2991 | { | |
2992 | return __parse_common(pevent, data, | |
2993 | &pevent->ld_size, &pevent->ld_offset, | |
2994 | "common_migrate_disable"); | |
f7d82350 SR |
2995 | } |
2996 | ||
2997 | static int events_id_cmp(const void *a, const void *b); | |
2998 | ||
2999 | /** | |
3000 | * pevent_find_event - find an event by given id | |
3001 | * @pevent: a handle to the pevent | |
3002 | * @id: the id of the event | |
3003 | * | |
3004 | * Returns an event that has a given @id. | |
3005 | */ | |
3006 | struct event_format *pevent_find_event(struct pevent *pevent, int id) | |
3007 | { | |
3008 | struct event_format **eventptr; | |
3009 | struct event_format key; | |
3010 | struct event_format *pkey = &key; | |
3011 | ||
3012 | /* Check cache first */ | |
3013 | if (pevent->last_event && pevent->last_event->id == id) | |
3014 | return pevent->last_event; | |
3015 | ||
3016 | key.id = id; | |
3017 | ||
3018 | eventptr = bsearch(&pkey, pevent->events, pevent->nr_events, | |
3019 | sizeof(*pevent->events), events_id_cmp); | |
3020 | ||
3021 | if (eventptr) { | |
3022 | pevent->last_event = *eventptr; | |
3023 | return *eventptr; | |
3024 | } | |
3025 | ||
3026 | return NULL; | |
3027 | } | |
3028 | ||
3029 | /** | |
3030 | * pevent_find_event_by_name - find an event by given name | |
3031 | * @pevent: a handle to the pevent | |
3032 | * @sys: the system name to search for | |
3033 | * @name: the name of the event to search for | |
3034 | * | |
3035 | * This returns an event with a given @name and under the system | |
3036 | * @sys. If @sys is NULL the first event with @name is returned. | |
3037 | */ | |
3038 | struct event_format * | |
3039 | pevent_find_event_by_name(struct pevent *pevent, | |
3040 | const char *sys, const char *name) | |
3041 | { | |
3042 | struct event_format *event; | |
3043 | int i; | |
3044 | ||
3045 | if (pevent->last_event && | |
3046 | strcmp(pevent->last_event->name, name) == 0 && | |
3047 | (!sys || strcmp(pevent->last_event->system, sys) == 0)) | |
3048 | return pevent->last_event; | |
3049 | ||
3050 | for (i = 0; i < pevent->nr_events; i++) { | |
3051 | event = pevent->events[i]; | |
3052 | if (strcmp(event->name, name) == 0) { | |
3053 | if (!sys) | |
3054 | break; | |
3055 | if (strcmp(event->system, sys) == 0) | |
3056 | break; | |
3057 | } | |
3058 | } | |
3059 | if (i == pevent->nr_events) | |
3060 | event = NULL; | |
3061 | ||
3062 | pevent->last_event = event; | |
3063 | return event; | |
3064 | } | |
3065 | ||
3066 | static unsigned long long | |
3067 | eval_num_arg(void *data, int size, struct event_format *event, struct print_arg *arg) | |
3068 | { | |
3069 | struct pevent *pevent = event->pevent; | |
3070 | unsigned long long val = 0; | |
3071 | unsigned long long left, right; | |
3072 | struct print_arg *typearg = NULL; | |
3073 | struct print_arg *larg; | |
3074 | unsigned long offset; | |
3075 | unsigned int field_size; | |
3076 | ||
3077 | switch (arg->type) { | |
3078 | case PRINT_NULL: | |
3079 | /* ?? */ | |
3080 | return 0; | |
3081 | case PRINT_ATOM: | |
3082 | return strtoull(arg->atom.atom, NULL, 0); | |
3083 | case PRINT_FIELD: | |
3084 | if (!arg->field.field) { | |
3085 | arg->field.field = pevent_find_any_field(event, arg->field.name); | |
3086 | if (!arg->field.field) | |
3087 | die("field %s not found", arg->field.name); | |
3088 | } | |
3089 | /* must be a number */ | |
3090 | val = pevent_read_number(pevent, data + arg->field.field->offset, | |
3091 | arg->field.field->size); | |
3092 | break; | |
3093 | case PRINT_FLAGS: | |
3094 | case PRINT_SYMBOL: | |
e080e6f1 | 3095 | case PRINT_HEX: |
f7d82350 SR |
3096 | break; |
3097 | case PRINT_TYPE: | |
3098 | val = eval_num_arg(data, size, event, arg->typecast.item); | |
3099 | return eval_type(val, arg, 0); | |
3100 | case PRINT_STRING: | |
3101 | case PRINT_BSTRING: | |
3102 | return 0; | |
3103 | case PRINT_FUNC: { | |
3104 | struct trace_seq s; | |
3105 | trace_seq_init(&s); | |
3106 | val = process_defined_func(&s, data, size, event, arg); | |
3107 | trace_seq_destroy(&s); | |
3108 | return val; | |
3109 | } | |
3110 | case PRINT_OP: | |
3111 | if (strcmp(arg->op.op, "[") == 0) { | |
3112 | /* | |
3113 | * Arrays are special, since we don't want | |
3114 | * to read the arg as is. | |
3115 | */ | |
3116 | right = eval_num_arg(data, size, event, arg->op.right); | |
3117 | ||
3118 | /* handle typecasts */ | |
3119 | larg = arg->op.left; | |
3120 | while (larg->type == PRINT_TYPE) { | |
3121 | if (!typearg) | |
3122 | typearg = larg; | |
3123 | larg = larg->typecast.item; | |
3124 | } | |
3125 | ||
3126 | /* Default to long size */ | |
3127 | field_size = pevent->long_size; | |
3128 | ||
3129 | switch (larg->type) { | |
3130 | case PRINT_DYNAMIC_ARRAY: | |
3131 | offset = pevent_read_number(pevent, | |
3132 | data + larg->dynarray.field->offset, | |
3133 | larg->dynarray.field->size); | |
3134 | if (larg->dynarray.field->elementsize) | |
3135 | field_size = larg->dynarray.field->elementsize; | |
3136 | /* | |
3137 | * The actual length of the dynamic array is stored | |
3138 | * in the top half of the field, and the offset | |
3139 | * is in the bottom half of the 32 bit field. | |
3140 | */ | |
3141 | offset &= 0xffff; | |
3142 | offset += right; | |
3143 | break; | |
3144 | case PRINT_FIELD: | |
3145 | if (!larg->field.field) { | |
3146 | larg->field.field = | |
3147 | pevent_find_any_field(event, larg->field.name); | |
3148 | if (!larg->field.field) | |
3149 | die("field %s not found", larg->field.name); | |
3150 | } | |
3151 | field_size = larg->field.field->elementsize; | |
3152 | offset = larg->field.field->offset + | |
3153 | right * larg->field.field->elementsize; | |
3154 | break; | |
3155 | default: | |
3156 | goto default_op; /* oops, all bets off */ | |
3157 | } | |
3158 | val = pevent_read_number(pevent, | |
3159 | data + offset, field_size); | |
3160 | if (typearg) | |
3161 | val = eval_type(val, typearg, 1); | |
3162 | break; | |
3163 | } else if (strcmp(arg->op.op, "?") == 0) { | |
3164 | left = eval_num_arg(data, size, event, arg->op.left); | |
3165 | arg = arg->op.right; | |
3166 | if (left) | |
3167 | val = eval_num_arg(data, size, event, arg->op.left); | |
3168 | else | |
3169 | val = eval_num_arg(data, size, event, arg->op.right); | |
3170 | break; | |
3171 | } | |
3172 | default_op: | |
3173 | left = eval_num_arg(data, size, event, arg->op.left); | |
3174 | right = eval_num_arg(data, size, event, arg->op.right); | |
3175 | switch (arg->op.op[0]) { | |
3176 | case '!': | |
3177 | switch (arg->op.op[1]) { | |
3178 | case 0: | |
3179 | val = !right; | |
3180 | break; | |
3181 | case '=': | |
3182 | val = left != right; | |
3183 | break; | |
3184 | default: | |
3185 | die("unknown op '%s'", arg->op.op); | |
3186 | } | |
3187 | break; | |
3188 | case '~': | |
3189 | val = ~right; | |
3190 | break; | |
3191 | case '|': | |
3192 | if (arg->op.op[1]) | |
3193 | val = left || right; | |
3194 | else | |
3195 | val = left | right; | |
3196 | break; | |
3197 | case '&': | |
3198 | if (arg->op.op[1]) | |
3199 | val = left && right; | |
3200 | else | |
3201 | val = left & right; | |
3202 | break; | |
3203 | case '<': | |
3204 | switch (arg->op.op[1]) { | |
3205 | case 0: | |
3206 | val = left < right; | |
3207 | break; | |
3208 | case '<': | |
3209 | val = left << right; | |
3210 | break; | |
3211 | case '=': | |
3212 | val = left <= right; | |
3213 | break; | |
3214 | default: | |
3215 | die("unknown op '%s'", arg->op.op); | |
3216 | } | |
3217 | break; | |
3218 | case '>': | |
3219 | switch (arg->op.op[1]) { | |
3220 | case 0: | |
3221 | val = left > right; | |
3222 | break; | |
3223 | case '>': | |
3224 | val = left >> right; | |
3225 | break; | |
3226 | case '=': | |
3227 | val = left >= right; | |
3228 | break; | |
3229 | default: | |
3230 | die("unknown op '%s'", arg->op.op); | |
3231 | } | |
3232 | break; | |
3233 | case '=': | |
3234 | if (arg->op.op[1] != '=') | |
3235 | die("unknown op '%s'", arg->op.op); | |
3236 | val = left == right; | |
3237 | break; | |
3238 | case '-': | |
3239 | val = left - right; | |
3240 | break; | |
3241 | case '+': | |
3242 | val = left + right; | |
3243 | break; | |
2e7a5fc8 SR |
3244 | case '/': |
3245 | val = left / right; | |
3246 | break; | |
3247 | case '*': | |
3248 | val = left * right; | |
3249 | break; | |
f7d82350 SR |
3250 | default: |
3251 | die("unknown op '%s'", arg->op.op); | |
3252 | } | |
3253 | break; | |
3254 | default: /* not sure what to do there */ | |
3255 | return 0; | |
3256 | } | |
3257 | return val; | |
3258 | } | |
3259 | ||
3260 | struct flag { | |
3261 | const char *name; | |
3262 | unsigned long long value; | |
3263 | }; | |
3264 | ||
3265 | static const struct flag flags[] = { | |
3266 | { "HI_SOFTIRQ", 0 }, | |
3267 | { "TIMER_SOFTIRQ", 1 }, | |
3268 | { "NET_TX_SOFTIRQ", 2 }, | |
3269 | { "NET_RX_SOFTIRQ", 3 }, | |
3270 | { "BLOCK_SOFTIRQ", 4 }, | |
3271 | { "BLOCK_IOPOLL_SOFTIRQ", 5 }, | |
3272 | { "TASKLET_SOFTIRQ", 6 }, | |
3273 | { "SCHED_SOFTIRQ", 7 }, | |
3274 | { "HRTIMER_SOFTIRQ", 8 }, | |
3275 | { "RCU_SOFTIRQ", 9 }, | |
3276 | ||
3277 | { "HRTIMER_NORESTART", 0 }, | |
3278 | { "HRTIMER_RESTART", 1 }, | |
3279 | }; | |
3280 | ||
3281 | static unsigned long long eval_flag(const char *flag) | |
3282 | { | |
3283 | int i; | |
3284 | ||
3285 | /* | |
3286 | * Some flags in the format files do not get converted. | |
3287 | * If the flag is not numeric, see if it is something that | |
3288 | * we already know about. | |
3289 | */ | |
3290 | if (isdigit(flag[0])) | |
3291 | return strtoull(flag, NULL, 0); | |
3292 | ||
3293 | for (i = 0; i < (int)(sizeof(flags)/sizeof(flags[0])); i++) | |
3294 | if (strcmp(flags[i].name, flag) == 0) | |
3295 | return flags[i].value; | |
3296 | ||
3297 | return 0; | |
3298 | } | |
3299 | ||
3300 | static void print_str_to_seq(struct trace_seq *s, const char *format, | |
3301 | int len_arg, const char *str) | |
3302 | { | |
3303 | if (len_arg >= 0) | |
3304 | trace_seq_printf(s, format, len_arg, str); | |
3305 | else | |
3306 | trace_seq_printf(s, format, str); | |
3307 | } | |
3308 | ||
3309 | static void print_str_arg(struct trace_seq *s, void *data, int size, | |
3310 | struct event_format *event, const char *format, | |
3311 | int len_arg, struct print_arg *arg) | |
3312 | { | |
3313 | struct pevent *pevent = event->pevent; | |
3314 | struct print_flag_sym *flag; | |
b7008071 | 3315 | struct format_field *field; |
f7d82350 SR |
3316 | unsigned long long val, fval; |
3317 | unsigned long addr; | |
3318 | char *str; | |
e080e6f1 | 3319 | unsigned char *hex; |
f7d82350 | 3320 | int print; |
e080e6f1 | 3321 | int i, len; |
f7d82350 SR |
3322 | |
3323 | switch (arg->type) { | |
3324 | case PRINT_NULL: | |
3325 | /* ?? */ | |
3326 | return; | |
3327 | case PRINT_ATOM: | |
3328 | print_str_to_seq(s, format, len_arg, arg->atom.atom); | |
3329 | return; | |
3330 | case PRINT_FIELD: | |
b7008071 NK |
3331 | field = arg->field.field; |
3332 | if (!field) { | |
3333 | field = pevent_find_any_field(event, arg->field.name); | |
3334 | if (!field) | |
f7d82350 | 3335 | die("field %s not found", arg->field.name); |
b7008071 | 3336 | arg->field.field = field; |
f7d82350 SR |
3337 | } |
3338 | /* Zero sized fields, mean the rest of the data */ | |
b7008071 | 3339 | len = field->size ? : size - field->offset; |
f7d82350 SR |
3340 | |
3341 | /* | |
3342 | * Some events pass in pointers. If this is not an array | |
3343 | * and the size is the same as long_size, assume that it | |
3344 | * is a pointer. | |
3345 | */ | |
b7008071 NK |
3346 | if (!(field->flags & FIELD_IS_ARRAY) && |
3347 | field->size == pevent->long_size) { | |
3348 | addr = *(unsigned long *)(data + field->offset); | |
f7d82350 SR |
3349 | trace_seq_printf(s, "%lx", addr); |
3350 | break; | |
3351 | } | |
3352 | str = malloc_or_die(len + 1); | |
b7008071 | 3353 | memcpy(str, data + field->offset, len); |
f7d82350 SR |
3354 | str[len] = 0; |
3355 | print_str_to_seq(s, format, len_arg, str); | |
3356 | free(str); | |
3357 | break; | |
3358 | case PRINT_FLAGS: | |
3359 | val = eval_num_arg(data, size, event, arg->flags.field); | |
3360 | print = 0; | |
3361 | for (flag = arg->flags.flags; flag; flag = flag->next) { | |
3362 | fval = eval_flag(flag->value); | |
3363 | if (!val && !fval) { | |
3364 | print_str_to_seq(s, format, len_arg, flag->str); | |
3365 | break; | |
3366 | } | |
3367 | if (fval && (val & fval) == fval) { | |
3368 | if (print && arg->flags.delim) | |
3369 | trace_seq_puts(s, arg->flags.delim); | |
3370 | print_str_to_seq(s, format, len_arg, flag->str); | |
3371 | print = 1; | |
3372 | val &= ~fval; | |
3373 | } | |
3374 | } | |
3375 | break; | |
3376 | case PRINT_SYMBOL: | |
3377 | val = eval_num_arg(data, size, event, arg->symbol.field); | |
3378 | for (flag = arg->symbol.symbols; flag; flag = flag->next) { | |
3379 | fval = eval_flag(flag->value); | |
3380 | if (val == fval) { | |
3381 | print_str_to_seq(s, format, len_arg, flag->str); | |
3382 | break; | |
3383 | } | |
3384 | } | |
3385 | break; | |
e080e6f1 NK |
3386 | case PRINT_HEX: |
3387 | field = arg->hex.field->field.field; | |
3388 | if (!field) { | |
3389 | str = arg->hex.field->field.name; | |
3390 | field = pevent_find_any_field(event, str); | |
3391 | if (!field) | |
3392 | die("field %s not found", str); | |
3393 | arg->hex.field->field.field = field; | |
3394 | } | |
3395 | hex = data + field->offset; | |
3396 | len = eval_num_arg(data, size, event, arg->hex.size); | |
3397 | for (i = 0; i < len; i++) { | |
3398 | if (i) | |
3399 | trace_seq_putc(s, ' '); | |
3400 | trace_seq_printf(s, "%02x", hex[i]); | |
3401 | } | |
3402 | break; | |
f7d82350 SR |
3403 | |
3404 | case PRINT_TYPE: | |
3405 | break; | |
3406 | case PRINT_STRING: { | |
3407 | int str_offset; | |
3408 | ||
3409 | if (arg->string.offset == -1) { | |
3410 | struct format_field *f; | |
3411 | ||
3412 | f = pevent_find_any_field(event, arg->string.string); | |
3413 | arg->string.offset = f->offset; | |
3414 | } | |
3415 | str_offset = data2host4(pevent, data + arg->string.offset); | |
3416 | str_offset &= 0xffff; | |
3417 | print_str_to_seq(s, format, len_arg, ((char *)data) + str_offset); | |
3418 | break; | |
3419 | } | |
3420 | case PRINT_BSTRING: | |
c2e6dc2b | 3421 | print_str_to_seq(s, format, len_arg, arg->string.string); |
f7d82350 SR |
3422 | break; |
3423 | case PRINT_OP: | |
3424 | /* | |
3425 | * The only op for string should be ? : | |
3426 | */ | |
3427 | if (arg->op.op[0] != '?') | |
3428 | return; | |
3429 | val = eval_num_arg(data, size, event, arg->op.left); | |
3430 | if (val) | |
3431 | print_str_arg(s, data, size, event, | |
3432 | format, len_arg, arg->op.right->op.left); | |
3433 | else | |
3434 | print_str_arg(s, data, size, event, | |
3435 | format, len_arg, arg->op.right->op.right); | |
3436 | break; | |
3437 | case PRINT_FUNC: | |
3438 | process_defined_func(s, data, size, event, arg); | |
3439 | break; | |
3440 | default: | |
3441 | /* well... */ | |
3442 | break; | |
3443 | } | |
3444 | } | |
3445 | ||
3446 | static unsigned long long | |
3447 | process_defined_func(struct trace_seq *s, void *data, int size, | |
3448 | struct event_format *event, struct print_arg *arg) | |
3449 | { | |
3450 | struct pevent_function_handler *func_handle = arg->func.func; | |
3451 | struct pevent_func_params *param; | |
3452 | unsigned long long *args; | |
3453 | unsigned long long ret; | |
3454 | struct print_arg *farg; | |
3455 | struct trace_seq str; | |
3456 | struct save_str { | |
3457 | struct save_str *next; | |
3458 | char *str; | |
3459 | } *strings = NULL, *string; | |
3460 | int i; | |
3461 | ||
3462 | if (!func_handle->nr_args) { | |
3463 | ret = (*func_handle->func)(s, NULL); | |
3464 | goto out; | |
3465 | } | |
3466 | ||
3467 | farg = arg->func.args; | |
3468 | param = func_handle->params; | |
3469 | ||
3470 | args = malloc_or_die(sizeof(*args) * func_handle->nr_args); | |
3471 | for (i = 0; i < func_handle->nr_args; i++) { | |
3472 | switch (param->type) { | |
3473 | case PEVENT_FUNC_ARG_INT: | |
3474 | case PEVENT_FUNC_ARG_LONG: | |
3475 | case PEVENT_FUNC_ARG_PTR: | |
3476 | args[i] = eval_num_arg(data, size, event, farg); | |
3477 | break; | |
3478 | case PEVENT_FUNC_ARG_STRING: | |
3479 | trace_seq_init(&str); | |
3480 | print_str_arg(&str, data, size, event, "%s", -1, farg); | |
3481 | trace_seq_terminate(&str); | |
3482 | string = malloc_or_die(sizeof(*string)); | |
3483 | string->next = strings; | |
3484 | string->str = strdup(str.buffer); | |
ca63858e NK |
3485 | if (!string->str) |
3486 | die("malloc str"); | |
3487 | ||
3831a42d | 3488 | args[i] = (unsigned long long)string->str; |
f7d82350 SR |
3489 | strings = string; |
3490 | trace_seq_destroy(&str); | |
3491 | break; | |
3492 | default: | |
3493 | /* | |
3494 | * Something went totally wrong, this is not | |
3495 | * an input error, something in this code broke. | |
3496 | */ | |
3497 | die("Unexpected end of arguments\n"); | |
3498 | break; | |
3499 | } | |
3500 | farg = farg->next; | |
21c69e72 | 3501 | param = param->next; |
f7d82350 SR |
3502 | } |
3503 | ||
3504 | ret = (*func_handle->func)(s, args); | |
3505 | free(args); | |
3506 | while (strings) { | |
3507 | string = strings; | |
3508 | strings = string->next; | |
3509 | free(string->str); | |
3510 | free(string); | |
3511 | } | |
3512 | ||
3513 | out: | |
3514 | /* TBD : handle return type here */ | |
3515 | return ret; | |
3516 | } | |
3517 | ||
3518 | static struct print_arg *make_bprint_args(char *fmt, void *data, int size, struct event_format *event) | |
3519 | { | |
3520 | struct pevent *pevent = event->pevent; | |
3521 | struct format_field *field, *ip_field; | |
3522 | struct print_arg *args, *arg, **next; | |
3523 | unsigned long long ip, val; | |
3524 | char *ptr; | |
3525 | void *bptr; | |
c2e6dc2b | 3526 | int vsize; |
f7d82350 SR |
3527 | |
3528 | field = pevent->bprint_buf_field; | |
3529 | ip_field = pevent->bprint_ip_field; | |
3530 | ||
3531 | if (!field) { | |
3532 | field = pevent_find_field(event, "buf"); | |
3533 | if (!field) | |
3534 | die("can't find buffer field for binary printk"); | |
3535 | ip_field = pevent_find_field(event, "ip"); | |
3536 | if (!ip_field) | |
3537 | die("can't find ip field for binary printk"); | |
3538 | pevent->bprint_buf_field = field; | |
3539 | pevent->bprint_ip_field = ip_field; | |
3540 | } | |
3541 | ||
3542 | ip = pevent_read_number(pevent, data + ip_field->offset, ip_field->size); | |
3543 | ||
3544 | /* | |
3545 | * The first arg is the IP pointer. | |
3546 | */ | |
3547 | args = alloc_arg(); | |
3548 | arg = args; | |
3549 | arg->next = NULL; | |
3550 | next = &arg->next; | |
3551 | ||
3552 | arg->type = PRINT_ATOM; | |
3553 | arg->atom.atom = malloc_or_die(32); | |
3554 | sprintf(arg->atom.atom, "%lld", ip); | |
3555 | ||
3556 | /* skip the first "%pf : " */ | |
3557 | for (ptr = fmt + 6, bptr = data + field->offset; | |
3558 | bptr < data + size && *ptr; ptr++) { | |
3559 | int ls = 0; | |
3560 | ||
3561 | if (*ptr == '%') { | |
3562 | process_again: | |
3563 | ptr++; | |
3564 | switch (*ptr) { | |
3565 | case '%': | |
3566 | break; | |
3567 | case 'l': | |
3568 | ls++; | |
3569 | goto process_again; | |
3570 | case 'L': | |
3571 | ls = 2; | |
3572 | goto process_again; | |
3573 | case '0' ... '9': | |
3574 | goto process_again; | |
c2e6dc2b SR |
3575 | case '.': |
3576 | goto process_again; | |
f7d82350 SR |
3577 | case 'p': |
3578 | ls = 1; | |
3579 | /* fall through */ | |
3580 | case 'd': | |
3581 | case 'u': | |
3582 | case 'x': | |
3583 | case 'i': | |
f7d82350 SR |
3584 | switch (ls) { |
3585 | case 0: | |
c2e6dc2b | 3586 | vsize = 4; |
f7d82350 SR |
3587 | break; |
3588 | case 1: | |
c2e6dc2b | 3589 | vsize = pevent->long_size; |
f7d82350 SR |
3590 | break; |
3591 | case 2: | |
c2e6dc2b | 3592 | vsize = 8; |
c9bbabe3 | 3593 | break; |
f7d82350 | 3594 | default: |
c2e6dc2b | 3595 | vsize = ls; /* ? */ |
f7d82350 SR |
3596 | break; |
3597 | } | |
c2e6dc2b SR |
3598 | /* fall through */ |
3599 | case '*': | |
3600 | if (*ptr == '*') | |
3601 | vsize = 4; | |
3602 | ||
3603 | /* the pointers are always 4 bytes aligned */ | |
3604 | bptr = (void *)(((unsigned long)bptr + 3) & | |
3605 | ~3); | |
3606 | val = pevent_read_number(pevent, bptr, vsize); | |
3607 | bptr += vsize; | |
f7d82350 SR |
3608 | arg = alloc_arg(); |
3609 | arg->next = NULL; | |
3610 | arg->type = PRINT_ATOM; | |
3611 | arg->atom.atom = malloc_or_die(32); | |
3612 | sprintf(arg->atom.atom, "%lld", val); | |
3613 | *next = arg; | |
3614 | next = &arg->next; | |
c2e6dc2b SR |
3615 | /* |
3616 | * The '*' case means that an arg is used as the length. | |
3617 | * We need to continue to figure out for what. | |
3618 | */ | |
3619 | if (*ptr == '*') | |
3620 | goto process_again; | |
3621 | ||
f7d82350 SR |
3622 | break; |
3623 | case 's': | |
3624 | arg = alloc_arg(); | |
3625 | arg->next = NULL; | |
3626 | arg->type = PRINT_BSTRING; | |
3627 | arg->string.string = strdup(bptr); | |
ca63858e NK |
3628 | if (!arg->string.string) |
3629 | break; | |
f7d82350 SR |
3630 | bptr += strlen(bptr) + 1; |
3631 | *next = arg; | |
3632 | next = &arg->next; | |
3633 | default: | |
3634 | break; | |
3635 | } | |
3636 | } | |
3637 | } | |
3638 | ||
3639 | return args; | |
3640 | } | |
3641 | ||
3642 | static void free_args(struct print_arg *args) | |
3643 | { | |
3644 | struct print_arg *next; | |
3645 | ||
3646 | while (args) { | |
3647 | next = args->next; | |
3648 | ||
3649 | free_arg(args); | |
3650 | args = next; | |
3651 | } | |
3652 | } | |
3653 | ||
3654 | static char * | |
3655 | get_bprint_format(void *data, int size __unused, struct event_format *event) | |
3656 | { | |
3657 | struct pevent *pevent = event->pevent; | |
3658 | unsigned long long addr; | |
3659 | struct format_field *field; | |
3660 | struct printk_map *printk; | |
3661 | char *format; | |
3662 | char *p; | |
3663 | ||
3664 | field = pevent->bprint_fmt_field; | |
3665 | ||
3666 | if (!field) { | |
3667 | field = pevent_find_field(event, "fmt"); | |
3668 | if (!field) | |
3669 | die("can't find format field for binary printk"); | |
3670 | pevent->bprint_fmt_field = field; | |
3671 | } | |
3672 | ||
3673 | addr = pevent_read_number(pevent, data + field->offset, field->size); | |
3674 | ||
3675 | printk = find_printk(pevent, addr); | |
3676 | if (!printk) { | |
3677 | format = malloc_or_die(45); | |
3678 | sprintf(format, "%%pf : (NO FORMAT FOUND at %llx)\n", | |
3679 | addr); | |
3680 | return format; | |
3681 | } | |
3682 | ||
3683 | p = printk->printk; | |
3684 | /* Remove any quotes. */ | |
3685 | if (*p == '"') | |
3686 | p++; | |
3687 | format = malloc_or_die(strlen(p) + 10); | |
3688 | sprintf(format, "%s : %s", "%pf", p); | |
3689 | /* remove ending quotes and new line since we will add one too */ | |
3690 | p = format + strlen(format) - 1; | |
3691 | if (*p == '"') | |
3692 | *p = 0; | |
3693 | ||
3694 | p -= 2; | |
3695 | if (strcmp(p, "\\n") == 0) | |
3696 | *p = 0; | |
3697 | ||
3698 | return format; | |
3699 | } | |
3700 | ||
3701 | static void print_mac_arg(struct trace_seq *s, int mac, void *data, int size, | |
3702 | struct event_format *event, struct print_arg *arg) | |
3703 | { | |
3704 | unsigned char *buf; | |
3705 | char *fmt = "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x"; | |
3706 | ||
3707 | if (arg->type == PRINT_FUNC) { | |
3708 | process_defined_func(s, data, size, event, arg); | |
3709 | return; | |
3710 | } | |
3711 | ||
3712 | if (arg->type != PRINT_FIELD) { | |
3713 | trace_seq_printf(s, "ARG TYPE NOT FIELD BUT %d", | |
3714 | arg->type); | |
3715 | return; | |
3716 | } | |
3717 | ||
3718 | if (mac == 'm') | |
3719 | fmt = "%.2x%.2x%.2x%.2x%.2x%.2x"; | |
3720 | if (!arg->field.field) { | |
3721 | arg->field.field = | |
3722 | pevent_find_any_field(event, arg->field.name); | |
3723 | if (!arg->field.field) | |
3724 | die("field %s not found", arg->field.name); | |
3725 | } | |
3726 | if (arg->field.field->size != 6) { | |
3727 | trace_seq_printf(s, "INVALIDMAC"); | |
3728 | return; | |
3729 | } | |
3730 | buf = data + arg->field.field->offset; | |
3731 | trace_seq_printf(s, fmt, buf[0], buf[1], buf[2], buf[3], buf[4], buf[5]); | |
3732 | } | |
3733 | ||
600da3cf NK |
3734 | static int is_printable_array(char *p, unsigned int len) |
3735 | { | |
3736 | unsigned int i; | |
3737 | ||
3738 | for (i = 0; i < len && p[i]; i++) | |
3739 | if (!isprint(p[i])) | |
3740 | return 0; | |
3741 | return 1; | |
3742 | } | |
3743 | ||
f7d82350 SR |
3744 | static void print_event_fields(struct trace_seq *s, void *data, int size, |
3745 | struct event_format *event) | |
3746 | { | |
3747 | struct format_field *field; | |
3748 | unsigned long long val; | |
3749 | unsigned int offset, len, i; | |
3750 | ||
3751 | field = event->format.fields; | |
3752 | while (field) { | |
3753 | trace_seq_printf(s, " %s=", field->name); | |
3754 | if (field->flags & FIELD_IS_ARRAY) { | |
3755 | offset = field->offset; | |
3756 | len = field->size; | |
3757 | if (field->flags & FIELD_IS_DYNAMIC) { | |
3758 | val = pevent_read_number(event->pevent, data + offset, len); | |
3759 | offset = val; | |
3760 | len = offset >> 16; | |
3761 | offset &= 0xffff; | |
3762 | } | |
600da3cf NK |
3763 | if (field->flags & FIELD_IS_STRING && |
3764 | is_printable_array(data + offset, len)) { | |
f7d82350 SR |
3765 | trace_seq_printf(s, "%s", (char *)data + offset); |
3766 | } else { | |
3767 | trace_seq_puts(s, "ARRAY["); | |
3768 | for (i = 0; i < len; i++) { | |
3769 | if (i) | |
3770 | trace_seq_puts(s, ", "); | |
3771 | trace_seq_printf(s, "%02x", | |
3772 | *((unsigned char *)data + offset + i)); | |
3773 | } | |
3774 | trace_seq_putc(s, ']'); | |
600da3cf | 3775 | field->flags &= ~FIELD_IS_STRING; |
f7d82350 SR |
3776 | } |
3777 | } else { | |
3778 | val = pevent_read_number(event->pevent, data + field->offset, | |
3779 | field->size); | |
3780 | if (field->flags & FIELD_IS_POINTER) { | |
3781 | trace_seq_printf(s, "0x%llx", val); | |
3782 | } else if (field->flags & FIELD_IS_SIGNED) { | |
3783 | switch (field->size) { | |
3784 | case 4: | |
3785 | /* | |
3786 | * If field is long then print it in hex. | |
3787 | * A long usually stores pointers. | |
3788 | */ | |
3789 | if (field->flags & FIELD_IS_LONG) | |
3790 | trace_seq_printf(s, "0x%x", (int)val); | |
3791 | else | |
3792 | trace_seq_printf(s, "%d", (int)val); | |
3793 | break; | |
3794 | case 2: | |
3795 | trace_seq_printf(s, "%2d", (short)val); | |
3796 | break; | |
3797 | case 1: | |
3798 | trace_seq_printf(s, "%1d", (char)val); | |
3799 | break; | |
3800 | default: | |
3801 | trace_seq_printf(s, "%lld", val); | |
3802 | } | |
3803 | } else { | |
3804 | if (field->flags & FIELD_IS_LONG) | |
3805 | trace_seq_printf(s, "0x%llx", val); | |
3806 | else | |
3807 | trace_seq_printf(s, "%llu", val); | |
3808 | } | |
3809 | } | |
3810 | field = field->next; | |
3811 | } | |
3812 | } | |
3813 | ||
3814 | static void pretty_print(struct trace_seq *s, void *data, int size, struct event_format *event) | |
3815 | { | |
3816 | struct pevent *pevent = event->pevent; | |
3817 | struct print_fmt *print_fmt = &event->print_fmt; | |
3818 | struct print_arg *arg = print_fmt->args; | |
3819 | struct print_arg *args = NULL; | |
3820 | const char *ptr = print_fmt->format; | |
3821 | unsigned long long val; | |
3822 | struct func_map *func; | |
3823 | const char *saveptr; | |
3824 | char *bprint_fmt = NULL; | |
3825 | char format[32]; | |
3826 | int show_func; | |
3827 | int len_as_arg; | |
3828 | int len_arg; | |
3829 | int len; | |
3830 | int ls; | |
3831 | ||
3832 | if (event->flags & EVENT_FL_FAILED) { | |
3833 | trace_seq_printf(s, "[FAILED TO PARSE]"); | |
3834 | print_event_fields(s, data, size, event); | |
3835 | return; | |
3836 | } | |
3837 | ||
3838 | if (event->flags & EVENT_FL_ISBPRINT) { | |
3839 | bprint_fmt = get_bprint_format(data, size, event); | |
3840 | args = make_bprint_args(bprint_fmt, data, size, event); | |
3841 | arg = args; | |
3842 | ptr = bprint_fmt; | |
3843 | } | |
3844 | ||
3845 | for (; *ptr; ptr++) { | |
3846 | ls = 0; | |
3847 | if (*ptr == '\\') { | |
3848 | ptr++; | |
3849 | switch (*ptr) { | |
3850 | case 'n': | |
3851 | trace_seq_putc(s, '\n'); | |
3852 | break; | |
3853 | case 't': | |
3854 | trace_seq_putc(s, '\t'); | |
3855 | break; | |
3856 | case 'r': | |
3857 | trace_seq_putc(s, '\r'); | |
3858 | break; | |
3859 | case '\\': | |
3860 | trace_seq_putc(s, '\\'); | |
3861 | break; | |
3862 | default: | |
3863 | trace_seq_putc(s, *ptr); | |
3864 | break; | |
3865 | } | |
3866 | ||
3867 | } else if (*ptr == '%') { | |
3868 | saveptr = ptr; | |
3869 | show_func = 0; | |
3870 | len_as_arg = 0; | |
3871 | cont_process: | |
3872 | ptr++; | |
3873 | switch (*ptr) { | |
3874 | case '%': | |
3875 | trace_seq_putc(s, '%'); | |
3876 | break; | |
3877 | case '#': | |
3878 | /* FIXME: need to handle properly */ | |
3879 | goto cont_process; | |
3880 | case 'h': | |
3881 | ls--; | |
3882 | goto cont_process; | |
3883 | case 'l': | |
3884 | ls++; | |
3885 | goto cont_process; | |
3886 | case 'L': | |
3887 | ls = 2; | |
3888 | goto cont_process; | |
3889 | case '*': | |
3890 | /* The argument is the length. */ | |
3891 | if (!arg) | |
3892 | die("no argument match"); | |
3893 | len_arg = eval_num_arg(data, size, event, arg); | |
3894 | len_as_arg = 1; | |
3895 | arg = arg->next; | |
3896 | goto cont_process; | |
3897 | case '.': | |
3898 | case 'z': | |
3899 | case 'Z': | |
3900 | case '0' ... '9': | |
3901 | goto cont_process; | |
3902 | case 'p': | |
3903 | if (pevent->long_size == 4) | |
3904 | ls = 1; | |
3905 | else | |
3906 | ls = 2; | |
3907 | ||
3908 | if (*(ptr+1) == 'F' || | |
3909 | *(ptr+1) == 'f') { | |
3910 | ptr++; | |
3911 | show_func = *ptr; | |
3912 | } else if (*(ptr+1) == 'M' || *(ptr+1) == 'm') { | |
3913 | print_mac_arg(s, *(ptr+1), data, size, event, arg); | |
3914 | ptr++; | |
aaf05c72 | 3915 | arg = arg->next; |
f7d82350 SR |
3916 | break; |
3917 | } | |
3918 | ||
3919 | /* fall through */ | |
3920 | case 'd': | |
3921 | case 'i': | |
3922 | case 'x': | |
3923 | case 'X': | |
3924 | case 'u': | |
3925 | if (!arg) | |
3926 | die("no argument match"); | |
3927 | ||
3928 | len = ((unsigned long)ptr + 1) - | |
3929 | (unsigned long)saveptr; | |
3930 | ||
3931 | /* should never happen */ | |
3932 | if (len > 31) | |
3933 | die("bad format!"); | |
3934 | ||
3935 | memcpy(format, saveptr, len); | |
3936 | format[len] = 0; | |
3937 | ||
3938 | val = eval_num_arg(data, size, event, arg); | |
3939 | arg = arg->next; | |
3940 | ||
3941 | if (show_func) { | |
3942 | func = find_func(pevent, val); | |
3943 | if (func) { | |
3944 | trace_seq_puts(s, func->func); | |
3945 | if (show_func == 'F') | |
3946 | trace_seq_printf(s, | |
3947 | "+0x%llx", | |
3948 | val - func->addr); | |
3949 | break; | |
3950 | } | |
3951 | } | |
c5b35b73 WM |
3952 | if (pevent->long_size == 8 && ls && |
3953 | sizeof(long) != 8) { | |
f7d82350 SR |
3954 | char *p; |
3955 | ||
3956 | ls = 2; | |
3957 | /* make %l into %ll */ | |
3958 | p = strchr(format, 'l'); | |
3959 | if (p) | |
c5b35b73 | 3960 | memmove(p+1, p, strlen(p)+1); |
f7d82350 SR |
3961 | else if (strcmp(format, "%p") == 0) |
3962 | strcpy(format, "0x%llx"); | |
3963 | } | |
3964 | switch (ls) { | |
3965 | case -2: | |
3966 | if (len_as_arg) | |
3967 | trace_seq_printf(s, format, len_arg, (char)val); | |
3968 | else | |
3969 | trace_seq_printf(s, format, (char)val); | |
3970 | break; | |
3971 | case -1: | |
3972 | if (len_as_arg) | |
3973 | trace_seq_printf(s, format, len_arg, (short)val); | |
3974 | else | |
3975 | trace_seq_printf(s, format, (short)val); | |
3976 | break; | |
3977 | case 0: | |
3978 | if (len_as_arg) | |
3979 | trace_seq_printf(s, format, len_arg, (int)val); | |
3980 | else | |
3981 | trace_seq_printf(s, format, (int)val); | |
3982 | break; | |
3983 | case 1: | |
3984 | if (len_as_arg) | |
3985 | trace_seq_printf(s, format, len_arg, (long)val); | |
3986 | else | |
3987 | trace_seq_printf(s, format, (long)val); | |
3988 | break; | |
3989 | case 2: | |
3990 | if (len_as_arg) | |
3991 | trace_seq_printf(s, format, len_arg, | |
3992 | (long long)val); | |
3993 | else | |
3994 | trace_seq_printf(s, format, (long long)val); | |
3995 | break; | |
3996 | default: | |
3997 | die("bad count (%d)", ls); | |
3998 | } | |
3999 | break; | |
4000 | case 's': | |
4001 | if (!arg) | |
4002 | die("no matching argument"); | |
4003 | ||
4004 | len = ((unsigned long)ptr + 1) - | |
4005 | (unsigned long)saveptr; | |
4006 | ||
4007 | /* should never happen */ | |
4008 | if (len > 31) | |
4009 | die("bad format!"); | |
4010 | ||
4011 | memcpy(format, saveptr, len); | |
4012 | format[len] = 0; | |
4013 | if (!len_as_arg) | |
4014 | len_arg = -1; | |
4015 | print_str_arg(s, data, size, event, | |
4016 | format, len_arg, arg); | |
4017 | arg = arg->next; | |
4018 | break; | |
4019 | default: | |
4020 | trace_seq_printf(s, ">%c<", *ptr); | |
4021 | ||
4022 | } | |
4023 | } else | |
4024 | trace_seq_putc(s, *ptr); | |
4025 | } | |
4026 | ||
4027 | if (args) { | |
4028 | free_args(args); | |
4029 | free(bprint_fmt); | |
4030 | } | |
4031 | } | |
4032 | ||
4033 | /** | |
4034 | * pevent_data_lat_fmt - parse the data for the latency format | |
4035 | * @pevent: a handle to the pevent | |
4036 | * @s: the trace_seq to write to | |
16e6b8fd | 4037 | * @record: the record to read from |
f7d82350 SR |
4038 | * |
4039 | * This parses out the Latency format (interrupts disabled, | |
4040 | * need rescheduling, in hard/soft interrupt, preempt count | |
4041 | * and lock depth) and places it into the trace_seq. | |
4042 | */ | |
4043 | void pevent_data_lat_fmt(struct pevent *pevent, | |
1c698186 | 4044 | struct trace_seq *s, struct pevent_record *record) |
f7d82350 SR |
4045 | { |
4046 | static int check_lock_depth = 1; | |
0866a97e | 4047 | static int check_migrate_disable = 1; |
f7d82350 | 4048 | static int lock_depth_exists; |
0866a97e | 4049 | static int migrate_disable_exists; |
f7d82350 SR |
4050 | unsigned int lat_flags; |
4051 | unsigned int pc; | |
4052 | int lock_depth; | |
0866a97e | 4053 | int migrate_disable; |
f7d82350 SR |
4054 | int hardirq; |
4055 | int softirq; | |
4056 | void *data = record->data; | |
4057 | ||
4058 | lat_flags = parse_common_flags(pevent, data); | |
4059 | pc = parse_common_pc(pevent, data); | |
4060 | /* lock_depth may not always exist */ | |
f7d82350 SR |
4061 | if (lock_depth_exists) |
4062 | lock_depth = parse_common_lock_depth(pevent, data); | |
0866a97e SR |
4063 | else if (check_lock_depth) { |
4064 | lock_depth = parse_common_lock_depth(pevent, data); | |
4065 | if (lock_depth < 0) | |
4066 | check_lock_depth = 0; | |
4067 | else | |
4068 | lock_depth_exists = 1; | |
4069 | } | |
4070 | ||
4071 | /* migrate_disable may not always exist */ | |
4072 | if (migrate_disable_exists) | |
4073 | migrate_disable = parse_common_migrate_disable(pevent, data); | |
4074 | else if (check_migrate_disable) { | |
4075 | migrate_disable = parse_common_migrate_disable(pevent, data); | |
4076 | if (migrate_disable < 0) | |
4077 | check_migrate_disable = 0; | |
4078 | else | |
4079 | migrate_disable_exists = 1; | |
4080 | } | |
f7d82350 SR |
4081 | |
4082 | hardirq = lat_flags & TRACE_FLAG_HARDIRQ; | |
4083 | softirq = lat_flags & TRACE_FLAG_SOFTIRQ; | |
4084 | ||
4085 | trace_seq_printf(s, "%c%c%c", | |
4086 | (lat_flags & TRACE_FLAG_IRQS_OFF) ? 'd' : | |
4087 | (lat_flags & TRACE_FLAG_IRQS_NOSUPPORT) ? | |
4088 | 'X' : '.', | |
4089 | (lat_flags & TRACE_FLAG_NEED_RESCHED) ? | |
4090 | 'N' : '.', | |
4091 | (hardirq && softirq) ? 'H' : | |
4092 | hardirq ? 'h' : softirq ? 's' : '.'); | |
4093 | ||
4094 | if (pc) | |
4095 | trace_seq_printf(s, "%x", pc); | |
4096 | else | |
4097 | trace_seq_putc(s, '.'); | |
4098 | ||
0866a97e SR |
4099 | if (migrate_disable_exists) { |
4100 | if (migrate_disable < 0) | |
4101 | trace_seq_putc(s, '.'); | |
4102 | else | |
4103 | trace_seq_printf(s, "%d", migrate_disable); | |
4104 | } | |
4105 | ||
f7d82350 SR |
4106 | if (lock_depth_exists) { |
4107 | if (lock_depth < 0) | |
4108 | trace_seq_putc(s, '.'); | |
4109 | else | |
4110 | trace_seq_printf(s, "%d", lock_depth); | |
4111 | } | |
4112 | ||
4113 | trace_seq_terminate(s); | |
4114 | } | |
4115 | ||
4116 | /** | |
4117 | * pevent_data_type - parse out the given event type | |
4118 | * @pevent: a handle to the pevent | |
4119 | * @rec: the record to read from | |
4120 | * | |
4121 | * This returns the event id from the @rec. | |
4122 | */ | |
1c698186 | 4123 | int pevent_data_type(struct pevent *pevent, struct pevent_record *rec) |
f7d82350 SR |
4124 | { |
4125 | return trace_parse_common_type(pevent, rec->data); | |
4126 | } | |
4127 | ||
4128 | /** | |
4129 | * pevent_data_event_from_type - find the event by a given type | |
4130 | * @pevent: a handle to the pevent | |
4131 | * @type: the type of the event. | |
4132 | * | |
4133 | * This returns the event form a given @type; | |
4134 | */ | |
4135 | struct event_format *pevent_data_event_from_type(struct pevent *pevent, int type) | |
4136 | { | |
4137 | return pevent_find_event(pevent, type); | |
4138 | } | |
4139 | ||
4140 | /** | |
4141 | * pevent_data_pid - parse the PID from raw data | |
4142 | * @pevent: a handle to the pevent | |
4143 | * @rec: the record to parse | |
4144 | * | |
4145 | * This returns the PID from a raw data. | |
4146 | */ | |
1c698186 | 4147 | int pevent_data_pid(struct pevent *pevent, struct pevent_record *rec) |
f7d82350 SR |
4148 | { |
4149 | return parse_common_pid(pevent, rec->data); | |
4150 | } | |
4151 | ||
4152 | /** | |
4153 | * pevent_data_comm_from_pid - return the command line from PID | |
4154 | * @pevent: a handle to the pevent | |
4155 | * @pid: the PID of the task to search for | |
4156 | * | |
4157 | * This returns a pointer to the command line that has the given | |
4158 | * @pid. | |
4159 | */ | |
4160 | const char *pevent_data_comm_from_pid(struct pevent *pevent, int pid) | |
4161 | { | |
4162 | const char *comm; | |
4163 | ||
4164 | comm = find_cmdline(pevent, pid); | |
4165 | return comm; | |
4166 | } | |
4167 | ||
4168 | /** | |
4169 | * pevent_data_comm_from_pid - parse the data into the print format | |
4170 | * @s: the trace_seq to write to | |
4171 | * @event: the handle to the event | |
16e6b8fd | 4172 | * @record: the record to read from |
f7d82350 SR |
4173 | * |
4174 | * This parses the raw @data using the given @event information and | |
4175 | * writes the print format into the trace_seq. | |
4176 | */ | |
4177 | void pevent_event_info(struct trace_seq *s, struct event_format *event, | |
1c698186 | 4178 | struct pevent_record *record) |
f7d82350 SR |
4179 | { |
4180 | int print_pretty = 1; | |
4181 | ||
4182 | if (event->pevent->print_raw) | |
4183 | print_event_fields(s, record->data, record->size, event); | |
4184 | else { | |
4185 | ||
4186 | if (event->handler) | |
4187 | print_pretty = event->handler(s, record, event, | |
4188 | event->context); | |
4189 | ||
4190 | if (print_pretty) | |
4191 | pretty_print(s, record->data, record->size, event); | |
4192 | } | |
4193 | ||
4194 | trace_seq_terminate(s); | |
4195 | } | |
4196 | ||
4197 | void pevent_print_event(struct pevent *pevent, struct trace_seq *s, | |
1c698186 | 4198 | struct pevent_record *record) |
f7d82350 SR |
4199 | { |
4200 | static char *spaces = " "; /* 20 spaces */ | |
4201 | struct event_format *event; | |
4202 | unsigned long secs; | |
4203 | unsigned long usecs; | |
4dc1024a | 4204 | unsigned long nsecs; |
f7d82350 SR |
4205 | const char *comm; |
4206 | void *data = record->data; | |
4207 | int type; | |
4208 | int pid; | |
4209 | int len; | |
4dc1024a | 4210 | int p; |
f7d82350 SR |
4211 | |
4212 | secs = record->ts / NSECS_PER_SEC; | |
4dc1024a | 4213 | nsecs = record->ts - secs * NSECS_PER_SEC; |
f7d82350 SR |
4214 | |
4215 | if (record->size < 0) { | |
4216 | do_warning("ug! negative record size %d", record->size); | |
4217 | return; | |
4218 | } | |
4219 | ||
4220 | type = trace_parse_common_type(pevent, data); | |
4221 | ||
4222 | event = pevent_find_event(pevent, type); | |
4223 | if (!event) { | |
4224 | do_warning("ug! no event found for type %d", type); | |
4225 | return; | |
4226 | } | |
4227 | ||
4228 | pid = parse_common_pid(pevent, data); | |
4229 | comm = find_cmdline(pevent, pid); | |
4230 | ||
4231 | if (pevent->latency_format) { | |
4232 | trace_seq_printf(s, "%8.8s-%-5d %3d", | |
4233 | comm, pid, record->cpu); | |
4234 | pevent_data_lat_fmt(pevent, s, record); | |
4235 | } else | |
4236 | trace_seq_printf(s, "%16s-%-5d [%03d]", comm, pid, record->cpu); | |
4237 | ||
4dc1024a SR |
4238 | if (pevent->flags & PEVENT_NSEC_OUTPUT) { |
4239 | usecs = nsecs; | |
4240 | p = 9; | |
4241 | } else { | |
4242 | usecs = (nsecs + 500) / NSECS_PER_USEC; | |
4243 | p = 6; | |
4244 | } | |
4245 | ||
4246 | trace_seq_printf(s, " %5lu.%0*lu: %s: ", secs, p, usecs, event->name); | |
f7d82350 SR |
4247 | |
4248 | /* Space out the event names evenly. */ | |
4249 | len = strlen(event->name); | |
4250 | if (len < 20) | |
4251 | trace_seq_printf(s, "%.*s", 20 - len, spaces); | |
4252 | ||
4253 | pevent_event_info(s, event, record); | |
4254 | } | |
4255 | ||
4256 | static int events_id_cmp(const void *a, const void *b) | |
4257 | { | |
4258 | struct event_format * const * ea = a; | |
4259 | struct event_format * const * eb = b; | |
4260 | ||
4261 | if ((*ea)->id < (*eb)->id) | |
4262 | return -1; | |
4263 | ||
4264 | if ((*ea)->id > (*eb)->id) | |
4265 | return 1; | |
4266 | ||
4267 | return 0; | |
4268 | } | |
4269 | ||
4270 | static int events_name_cmp(const void *a, const void *b) | |
4271 | { | |
4272 | struct event_format * const * ea = a; | |
4273 | struct event_format * const * eb = b; | |
4274 | int res; | |
4275 | ||
4276 | res = strcmp((*ea)->name, (*eb)->name); | |
4277 | if (res) | |
4278 | return res; | |
4279 | ||
4280 | res = strcmp((*ea)->system, (*eb)->system); | |
4281 | if (res) | |
4282 | return res; | |
4283 | ||
4284 | return events_id_cmp(a, b); | |
4285 | } | |
4286 | ||
4287 | static int events_system_cmp(const void *a, const void *b) | |
4288 | { | |
4289 | struct event_format * const * ea = a; | |
4290 | struct event_format * const * eb = b; | |
4291 | int res; | |
4292 | ||
4293 | res = strcmp((*ea)->system, (*eb)->system); | |
4294 | if (res) | |
4295 | return res; | |
4296 | ||
4297 | res = strcmp((*ea)->name, (*eb)->name); | |
4298 | if (res) | |
4299 | return res; | |
4300 | ||
4301 | return events_id_cmp(a, b); | |
4302 | } | |
4303 | ||
4304 | struct event_format **pevent_list_events(struct pevent *pevent, enum event_sort_type sort_type) | |
4305 | { | |
4306 | struct event_format **events; | |
4307 | int (*sort)(const void *a, const void *b); | |
4308 | ||
4309 | events = pevent->sort_events; | |
4310 | ||
4311 | if (events && pevent->last_type == sort_type) | |
4312 | return events; | |
4313 | ||
4314 | if (!events) { | |
4315 | events = malloc(sizeof(*events) * (pevent->nr_events + 1)); | |
4316 | if (!events) | |
4317 | return NULL; | |
4318 | ||
4319 | memcpy(events, pevent->events, sizeof(*events) * pevent->nr_events); | |
4320 | events[pevent->nr_events] = NULL; | |
4321 | ||
4322 | pevent->sort_events = events; | |
4323 | ||
4324 | /* the internal events are sorted by id */ | |
4325 | if (sort_type == EVENT_SORT_ID) { | |
4326 | pevent->last_type = sort_type; | |
4327 | return events; | |
4328 | } | |
4329 | } | |
4330 | ||
4331 | switch (sort_type) { | |
4332 | case EVENT_SORT_ID: | |
4333 | sort = events_id_cmp; | |
4334 | break; | |
4335 | case EVENT_SORT_NAME: | |
4336 | sort = events_name_cmp; | |
4337 | break; | |
4338 | case EVENT_SORT_SYSTEM: | |
4339 | sort = events_system_cmp; | |
4340 | break; | |
4341 | default: | |
4342 | return events; | |
4343 | } | |
4344 | ||
4345 | qsort(events, pevent->nr_events, sizeof(*events), sort); | |
4346 | pevent->last_type = sort_type; | |
4347 | ||
4348 | return events; | |
4349 | } | |
4350 | ||
4351 | static struct format_field ** | |
4352 | get_event_fields(const char *type, const char *name, | |
4353 | int count, struct format_field *list) | |
4354 | { | |
4355 | struct format_field **fields; | |
4356 | struct format_field *field; | |
4357 | int i = 0; | |
4358 | ||
4359 | fields = malloc_or_die(sizeof(*fields) * (count + 1)); | |
4360 | for (field = list; field; field = field->next) { | |
4361 | fields[i++] = field; | |
4362 | if (i == count + 1) { | |
4363 | do_warning("event %s has more %s fields than specified", | |
4364 | name, type); | |
4365 | i--; | |
4366 | break; | |
4367 | } | |
4368 | } | |
4369 | ||
4370 | if (i != count) | |
4371 | do_warning("event %s has less %s fields than specified", | |
4372 | name, type); | |
4373 | ||
4374 | fields[i] = NULL; | |
4375 | ||
4376 | return fields; | |
4377 | } | |
4378 | ||
4379 | /** | |
4380 | * pevent_event_common_fields - return a list of common fields for an event | |
4381 | * @event: the event to return the common fields of. | |
4382 | * | |
4383 | * Returns an allocated array of fields. The last item in the array is NULL. | |
4384 | * The array must be freed with free(). | |
4385 | */ | |
4386 | struct format_field **pevent_event_common_fields(struct event_format *event) | |
4387 | { | |
4388 | return get_event_fields("common", event->name, | |
4389 | event->format.nr_common, | |
4390 | event->format.common_fields); | |
4391 | } | |
4392 | ||
4393 | /** | |
4394 | * pevent_event_fields - return a list of event specific fields for an event | |
4395 | * @event: the event to return the fields of. | |
4396 | * | |
4397 | * Returns an allocated array of fields. The last item in the array is NULL. | |
4398 | * The array must be freed with free(). | |
4399 | */ | |
4400 | struct format_field **pevent_event_fields(struct event_format *event) | |
4401 | { | |
4402 | return get_event_fields("event", event->name, | |
4403 | event->format.nr_fields, | |
4404 | event->format.fields); | |
4405 | } | |
4406 | ||
4407 | static void print_fields(struct trace_seq *s, struct print_flag_sym *field) | |
4408 | { | |
4409 | trace_seq_printf(s, "{ %s, %s }", field->value, field->str); | |
4410 | if (field->next) { | |
4411 | trace_seq_puts(s, ", "); | |
4412 | print_fields(s, field->next); | |
4413 | } | |
4414 | } | |
4415 | ||
4416 | /* for debugging */ | |
4417 | static void print_args(struct print_arg *args) | |
4418 | { | |
4419 | int print_paren = 1; | |
4420 | struct trace_seq s; | |
4421 | ||
4422 | switch (args->type) { | |
4423 | case PRINT_NULL: | |
4424 | printf("null"); | |
4425 | break; | |
4426 | case PRINT_ATOM: | |
4427 | printf("%s", args->atom.atom); | |
4428 | break; | |
4429 | case PRINT_FIELD: | |
4430 | printf("REC->%s", args->field.name); | |
4431 | break; | |
4432 | case PRINT_FLAGS: | |
4433 | printf("__print_flags("); | |
4434 | print_args(args->flags.field); | |
4435 | printf(", %s, ", args->flags.delim); | |
4436 | trace_seq_init(&s); | |
4437 | print_fields(&s, args->flags.flags); | |
4438 | trace_seq_do_printf(&s); | |
4439 | trace_seq_destroy(&s); | |
4440 | printf(")"); | |
4441 | break; | |
4442 | case PRINT_SYMBOL: | |
4443 | printf("__print_symbolic("); | |
4444 | print_args(args->symbol.field); | |
4445 | printf(", "); | |
4446 | trace_seq_init(&s); | |
4447 | print_fields(&s, args->symbol.symbols); | |
4448 | trace_seq_do_printf(&s); | |
4449 | trace_seq_destroy(&s); | |
4450 | printf(")"); | |
4451 | break; | |
e080e6f1 NK |
4452 | case PRINT_HEX: |
4453 | printf("__print_hex("); | |
4454 | print_args(args->hex.field); | |
4455 | printf(", "); | |
4456 | print_args(args->hex.size); | |
4457 | printf(")"); | |
4458 | break; | |
f7d82350 SR |
4459 | case PRINT_STRING: |
4460 | case PRINT_BSTRING: | |
4461 | printf("__get_str(%s)", args->string.string); | |
4462 | break; | |
4463 | case PRINT_TYPE: | |
4464 | printf("(%s)", args->typecast.type); | |
4465 | print_args(args->typecast.item); | |
4466 | break; | |
4467 | case PRINT_OP: | |
4468 | if (strcmp(args->op.op, ":") == 0) | |
4469 | print_paren = 0; | |
4470 | if (print_paren) | |
4471 | printf("("); | |
4472 | print_args(args->op.left); | |
4473 | printf(" %s ", args->op.op); | |
4474 | print_args(args->op.right); | |
4475 | if (print_paren) | |
4476 | printf(")"); | |
4477 | break; | |
4478 | default: | |
4479 | /* we should warn... */ | |
4480 | return; | |
4481 | } | |
4482 | if (args->next) { | |
4483 | printf("\n"); | |
4484 | print_args(args->next); | |
4485 | } | |
4486 | } | |
4487 | ||
4488 | static void parse_header_field(const char *field, | |
4489 | int *offset, int *size, int mandatory) | |
4490 | { | |
4491 | unsigned long long save_input_buf_ptr; | |
4492 | unsigned long long save_input_buf_siz; | |
4493 | char *token; | |
4494 | int type; | |
4495 | ||
4496 | save_input_buf_ptr = input_buf_ptr; | |
4497 | save_input_buf_siz = input_buf_siz; | |
4498 | ||
4499 | if (read_expected(EVENT_ITEM, "field") < 0) | |
4500 | return; | |
4501 | if (read_expected(EVENT_OP, ":") < 0) | |
4502 | return; | |
4503 | ||
4504 | /* type */ | |
4505 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
4506 | goto fail; | |
4507 | free_token(token); | |
4508 | ||
4509 | /* | |
4510 | * If this is not a mandatory field, then test it first. | |
4511 | */ | |
4512 | if (mandatory) { | |
4513 | if (read_expected(EVENT_ITEM, field) < 0) | |
4514 | return; | |
4515 | } else { | |
4516 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
4517 | goto fail; | |
4518 | if (strcmp(token, field) != 0) | |
4519 | goto discard; | |
4520 | free_token(token); | |
4521 | } | |
4522 | ||
4523 | if (read_expected(EVENT_OP, ";") < 0) | |
4524 | return; | |
4525 | if (read_expected(EVENT_ITEM, "offset") < 0) | |
4526 | return; | |
4527 | if (read_expected(EVENT_OP, ":") < 0) | |
4528 | return; | |
4529 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
4530 | goto fail; | |
4531 | *offset = atoi(token); | |
4532 | free_token(token); | |
4533 | if (read_expected(EVENT_OP, ";") < 0) | |
4534 | return; | |
4535 | if (read_expected(EVENT_ITEM, "size") < 0) | |
4536 | return; | |
4537 | if (read_expected(EVENT_OP, ":") < 0) | |
4538 | return; | |
4539 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
4540 | goto fail; | |
4541 | *size = atoi(token); | |
4542 | free_token(token); | |
4543 | if (read_expected(EVENT_OP, ";") < 0) | |
4544 | return; | |
4545 | type = read_token(&token); | |
4546 | if (type != EVENT_NEWLINE) { | |
4547 | /* newer versions of the kernel have a "signed" type */ | |
4548 | if (type != EVENT_ITEM) | |
4549 | goto fail; | |
4550 | ||
4551 | if (strcmp(token, "signed") != 0) | |
4552 | goto fail; | |
4553 | ||
4554 | free_token(token); | |
4555 | ||
4556 | if (read_expected(EVENT_OP, ":") < 0) | |
4557 | return; | |
4558 | ||
4559 | if (read_expect_type(EVENT_ITEM, &token)) | |
4560 | goto fail; | |
4561 | ||
4562 | free_token(token); | |
4563 | if (read_expected(EVENT_OP, ";") < 0) | |
4564 | return; | |
4565 | ||
4566 | if (read_expect_type(EVENT_NEWLINE, &token)) | |
4567 | goto fail; | |
4568 | } | |
4569 | fail: | |
4570 | free_token(token); | |
4571 | return; | |
4572 | ||
4573 | discard: | |
4574 | input_buf_ptr = save_input_buf_ptr; | |
4575 | input_buf_siz = save_input_buf_siz; | |
4576 | *offset = 0; | |
4577 | *size = 0; | |
4578 | free_token(token); | |
4579 | } | |
4580 | ||
4581 | /** | |
4582 | * pevent_parse_header_page - parse the data stored in the header page | |
4583 | * @pevent: the handle to the pevent | |
4584 | * @buf: the buffer storing the header page format string | |
4585 | * @size: the size of @buf | |
4586 | * @long_size: the long size to use if there is no header | |
4587 | * | |
4588 | * This parses the header page format for information on the | |
4589 | * ring buffer used. The @buf should be copied from | |
4590 | * | |
4591 | * /sys/kernel/debug/tracing/events/header_page | |
4592 | */ | |
4593 | int pevent_parse_header_page(struct pevent *pevent, char *buf, unsigned long size, | |
4594 | int long_size) | |
4595 | { | |
4596 | int ignore; | |
4597 | ||
4598 | if (!size) { | |
4599 | /* | |
4600 | * Old kernels did not have header page info. | |
4601 | * Sorry but we just use what we find here in user space. | |
4602 | */ | |
4603 | pevent->header_page_ts_size = sizeof(long long); | |
4604 | pevent->header_page_size_size = long_size; | |
4605 | pevent->header_page_data_offset = sizeof(long long) + long_size; | |
4606 | pevent->old_format = 1; | |
4607 | return -1; | |
4608 | } | |
4609 | init_input_buf(buf, size); | |
4610 | ||
4611 | parse_header_field("timestamp", &pevent->header_page_ts_offset, | |
4612 | &pevent->header_page_ts_size, 1); | |
4613 | parse_header_field("commit", &pevent->header_page_size_offset, | |
4614 | &pevent->header_page_size_size, 1); | |
4615 | parse_header_field("overwrite", &pevent->header_page_overwrite, | |
4616 | &ignore, 0); | |
4617 | parse_header_field("data", &pevent->header_page_data_offset, | |
4618 | &pevent->header_page_data_size, 1); | |
4619 | ||
4620 | return 0; | |
4621 | } | |
4622 | ||
4623 | static int event_matches(struct event_format *event, | |
4624 | int id, const char *sys_name, | |
4625 | const char *event_name) | |
4626 | { | |
4627 | if (id >= 0 && id != event->id) | |
4628 | return 0; | |
4629 | ||
4630 | if (event_name && (strcmp(event_name, event->name) != 0)) | |
4631 | return 0; | |
4632 | ||
4633 | if (sys_name && (strcmp(sys_name, event->system) != 0)) | |
4634 | return 0; | |
4635 | ||
4636 | return 1; | |
4637 | } | |
4638 | ||
4639 | static void free_handler(struct event_handler *handle) | |
4640 | { | |
4641 | free((void *)handle->sys_name); | |
4642 | free((void *)handle->event_name); | |
4643 | free(handle); | |
4644 | } | |
4645 | ||
4646 | static int find_event_handle(struct pevent *pevent, struct event_format *event) | |
4647 | { | |
4648 | struct event_handler *handle, **next; | |
4649 | ||
4650 | for (next = &pevent->handlers; *next; | |
4651 | next = &(*next)->next) { | |
4652 | handle = *next; | |
4653 | if (event_matches(event, handle->id, | |
4654 | handle->sys_name, | |
4655 | handle->event_name)) | |
4656 | break; | |
4657 | } | |
4658 | ||
4659 | if (!(*next)) | |
4660 | return 0; | |
4661 | ||
4662 | pr_stat("overriding event (%d) %s:%s with new print handler", | |
4663 | event->id, event->system, event->name); | |
4664 | ||
4665 | event->handler = handle->func; | |
4666 | event->context = handle->context; | |
4667 | ||
4668 | *next = handle->next; | |
4669 | free_handler(handle); | |
4670 | ||
4671 | return 1; | |
4672 | } | |
4673 | ||
4674 | /** | |
4675 | * pevent_parse_event - parse the event format | |
4676 | * @pevent: the handle to the pevent | |
4677 | * @buf: the buffer storing the event format string | |
4678 | * @size: the size of @buf | |
4679 | * @sys: the system the event belongs to | |
4680 | * | |
4681 | * This parses the event format and creates an event structure | |
4682 | * to quickly parse raw data for a given event. | |
4683 | * | |
4684 | * These files currently come from: | |
4685 | * | |
4686 | * /sys/kernel/debug/tracing/events/.../.../format | |
4687 | */ | |
4688 | int pevent_parse_event(struct pevent *pevent, | |
4689 | const char *buf, unsigned long size, | |
4690 | const char *sys) | |
4691 | { | |
4692 | struct event_format *event; | |
4693 | int ret; | |
4694 | ||
4695 | init_input_buf(buf, size); | |
4696 | ||
4697 | event = alloc_event(); | |
4698 | if (!event) | |
4699 | return -ENOMEM; | |
4700 | ||
4701 | event->name = event_read_name(); | |
4702 | if (!event->name) { | |
4703 | /* Bad event? */ | |
4704 | free(event); | |
4705 | return -1; | |
4706 | } | |
4707 | ||
4708 | if (strcmp(sys, "ftrace") == 0) { | |
4709 | ||
4710 | event->flags |= EVENT_FL_ISFTRACE; | |
4711 | ||
4712 | if (strcmp(event->name, "bprint") == 0) | |
4713 | event->flags |= EVENT_FL_ISBPRINT; | |
4714 | } | |
4715 | ||
4716 | event->id = event_read_id(); | |
4717 | if (event->id < 0) | |
4718 | die("failed to read event id"); | |
4719 | ||
4720 | event->system = strdup(sys); | |
ca63858e NK |
4721 | if (!event->system) |
4722 | die("failed to allocate system"); | |
f7d82350 SR |
4723 | |
4724 | /* Add pevent to event so that it can be referenced */ | |
4725 | event->pevent = pevent; | |
4726 | ||
4727 | ret = event_read_format(event); | |
4728 | if (ret < 0) { | |
4729 | do_warning("failed to read event format for %s", event->name); | |
4730 | goto event_failed; | |
4731 | } | |
4732 | ||
4733 | /* | |
4734 | * If the event has an override, don't print warnings if the event | |
4735 | * print format fails to parse. | |
4736 | */ | |
4737 | if (find_event_handle(pevent, event)) | |
4738 | show_warning = 0; | |
4739 | ||
4740 | ret = event_read_print(event); | |
4741 | if (ret < 0) { | |
4742 | do_warning("failed to read event print fmt for %s", | |
4743 | event->name); | |
4744 | show_warning = 1; | |
4745 | goto event_failed; | |
4746 | } | |
4747 | show_warning = 1; | |
4748 | ||
4749 | add_event(pevent, event); | |
4750 | ||
4751 | if (!ret && (event->flags & EVENT_FL_ISFTRACE)) { | |
4752 | struct format_field *field; | |
4753 | struct print_arg *arg, **list; | |
4754 | ||
4755 | /* old ftrace had no args */ | |
4756 | ||
4757 | list = &event->print_fmt.args; | |
4758 | for (field = event->format.fields; field; field = field->next) { | |
4759 | arg = alloc_arg(); | |
4760 | *list = arg; | |
4761 | list = &arg->next; | |
4762 | arg->type = PRINT_FIELD; | |
4763 | arg->field.name = strdup(field->name); | |
ca63858e NK |
4764 | if (!arg->field.name) { |
4765 | do_warning("failed to allocate field name"); | |
4b5632bc NK |
4766 | event->flags |= EVENT_FL_FAILED; |
4767 | return -1; | |
ca63858e | 4768 | } |
f7d82350 SR |
4769 | arg->field.field = field; |
4770 | } | |
4771 | return 0; | |
4772 | } | |
4773 | ||
4774 | #define PRINT_ARGS 0 | |
4775 | if (PRINT_ARGS && event->print_fmt.args) | |
4776 | print_args(event->print_fmt.args); | |
4777 | ||
4778 | return 0; | |
4779 | ||
4780 | event_failed: | |
4781 | event->flags |= EVENT_FL_FAILED; | |
4782 | /* still add it even if it failed */ | |
4783 | add_event(pevent, event); | |
4784 | return -1; | |
4785 | } | |
4786 | ||
4787 | int get_field_val(struct trace_seq *s, struct format_field *field, | |
1c698186 | 4788 | const char *name, struct pevent_record *record, |
f7d82350 SR |
4789 | unsigned long long *val, int err) |
4790 | { | |
4791 | if (!field) { | |
4792 | if (err) | |
4793 | trace_seq_printf(s, "<CANT FIND FIELD %s>", name); | |
4794 | return -1; | |
4795 | } | |
4796 | ||
4797 | if (pevent_read_number_field(field, record->data, val)) { | |
4798 | if (err) | |
4799 | trace_seq_printf(s, " %s=INVALID", name); | |
4800 | return -1; | |
4801 | } | |
4802 | ||
4803 | return 0; | |
4804 | } | |
4805 | ||
4806 | /** | |
4807 | * pevent_get_field_raw - return the raw pointer into the data field | |
4808 | * @s: The seq to print to on error | |
4809 | * @event: the event that the field is for | |
4810 | * @name: The name of the field | |
4811 | * @record: The record with the field name. | |
4812 | * @len: place to store the field length. | |
4813 | * @err: print default error if failed. | |
4814 | * | |
4815 | * Returns a pointer into record->data of the field and places | |
4816 | * the length of the field in @len. | |
4817 | * | |
4818 | * On failure, it returns NULL. | |
4819 | */ | |
4820 | void *pevent_get_field_raw(struct trace_seq *s, struct event_format *event, | |
1c698186 | 4821 | const char *name, struct pevent_record *record, |
f7d82350 SR |
4822 | int *len, int err) |
4823 | { | |
4824 | struct format_field *field; | |
4825 | void *data = record->data; | |
4826 | unsigned offset; | |
4827 | int dummy; | |
4828 | ||
4829 | if (!event) | |
4830 | return NULL; | |
4831 | ||
4832 | field = pevent_find_field(event, name); | |
4833 | ||
4834 | if (!field) { | |
4835 | if (err) | |
4836 | trace_seq_printf(s, "<CANT FIND FIELD %s>", name); | |
4837 | return NULL; | |
4838 | } | |
4839 | ||
4840 | /* Allow @len to be NULL */ | |
4841 | if (!len) | |
4842 | len = &dummy; | |
4843 | ||
4844 | offset = field->offset; | |
4845 | if (field->flags & FIELD_IS_DYNAMIC) { | |
4846 | offset = pevent_read_number(event->pevent, | |
4847 | data + offset, field->size); | |
4848 | *len = offset >> 16; | |
4849 | offset &= 0xffff; | |
4850 | } else | |
4851 | *len = field->size; | |
4852 | ||
4853 | return data + offset; | |
4854 | } | |
4855 | ||
4856 | /** | |
4857 | * pevent_get_field_val - find a field and return its value | |
4858 | * @s: The seq to print to on error | |
4859 | * @event: the event that the field is for | |
4860 | * @name: The name of the field | |
4861 | * @record: The record with the field name. | |
4862 | * @val: place to store the value of the field. | |
4863 | * @err: print default error if failed. | |
4864 | * | |
4865 | * Returns 0 on success -1 on field not found. | |
4866 | */ | |
4867 | int pevent_get_field_val(struct trace_seq *s, struct event_format *event, | |
1c698186 | 4868 | const char *name, struct pevent_record *record, |
f7d82350 SR |
4869 | unsigned long long *val, int err) |
4870 | { | |
4871 | struct format_field *field; | |
4872 | ||
4873 | if (!event) | |
4874 | return -1; | |
4875 | ||
4876 | field = pevent_find_field(event, name); | |
4877 | ||
4878 | return get_field_val(s, field, name, record, val, err); | |
4879 | } | |
4880 | ||
4881 | /** | |
4882 | * pevent_get_common_field_val - find a common field and return its value | |
4883 | * @s: The seq to print to on error | |
4884 | * @event: the event that the field is for | |
4885 | * @name: The name of the field | |
4886 | * @record: The record with the field name. | |
4887 | * @val: place to store the value of the field. | |
4888 | * @err: print default error if failed. | |
4889 | * | |
4890 | * Returns 0 on success -1 on field not found. | |
4891 | */ | |
4892 | int pevent_get_common_field_val(struct trace_seq *s, struct event_format *event, | |
1c698186 | 4893 | const char *name, struct pevent_record *record, |
f7d82350 SR |
4894 | unsigned long long *val, int err) |
4895 | { | |
4896 | struct format_field *field; | |
4897 | ||
4898 | if (!event) | |
4899 | return -1; | |
4900 | ||
4901 | field = pevent_find_common_field(event, name); | |
4902 | ||
4903 | return get_field_val(s, field, name, record, val, err); | |
4904 | } | |
4905 | ||
4906 | /** | |
4907 | * pevent_get_any_field_val - find a any field and return its value | |
4908 | * @s: The seq to print to on error | |
4909 | * @event: the event that the field is for | |
4910 | * @name: The name of the field | |
4911 | * @record: The record with the field name. | |
4912 | * @val: place to store the value of the field. | |
4913 | * @err: print default error if failed. | |
4914 | * | |
4915 | * Returns 0 on success -1 on field not found. | |
4916 | */ | |
4917 | int pevent_get_any_field_val(struct trace_seq *s, struct event_format *event, | |
1c698186 | 4918 | const char *name, struct pevent_record *record, |
f7d82350 SR |
4919 | unsigned long long *val, int err) |
4920 | { | |
4921 | struct format_field *field; | |
4922 | ||
4923 | if (!event) | |
4924 | return -1; | |
4925 | ||
4926 | field = pevent_find_any_field(event, name); | |
4927 | ||
4928 | return get_field_val(s, field, name, record, val, err); | |
4929 | } | |
4930 | ||
4931 | /** | |
4932 | * pevent_print_num_field - print a field and a format | |
4933 | * @s: The seq to print to | |
4934 | * @fmt: The printf format to print the field with. | |
4935 | * @event: the event that the field is for | |
4936 | * @name: The name of the field | |
4937 | * @record: The record with the field name. | |
4938 | * @err: print default error if failed. | |
4939 | * | |
16e6b8fd | 4940 | * Returns: 0 on success, -1 field not found, or 1 if buffer is full. |
f7d82350 SR |
4941 | */ |
4942 | int pevent_print_num_field(struct trace_seq *s, const char *fmt, | |
4943 | struct event_format *event, const char *name, | |
1c698186 | 4944 | struct pevent_record *record, int err) |
f7d82350 SR |
4945 | { |
4946 | struct format_field *field = pevent_find_field(event, name); | |
4947 | unsigned long long val; | |
4948 | ||
4949 | if (!field) | |
4950 | goto failed; | |
4951 | ||
4952 | if (pevent_read_number_field(field, record->data, &val)) | |
4953 | goto failed; | |
4954 | ||
4955 | return trace_seq_printf(s, fmt, val); | |
4956 | ||
4957 | failed: | |
4958 | if (err) | |
4959 | trace_seq_printf(s, "CAN'T FIND FIELD \"%s\"", name); | |
4960 | return -1; | |
4961 | } | |
4962 | ||
4963 | static void free_func_handle(struct pevent_function_handler *func) | |
4964 | { | |
4965 | struct pevent_func_params *params; | |
4966 | ||
4967 | free(func->name); | |
4968 | ||
4969 | while (func->params) { | |
4970 | params = func->params; | |
4971 | func->params = params->next; | |
4972 | free(params); | |
4973 | } | |
4974 | ||
4975 | free(func); | |
4976 | } | |
4977 | ||
4978 | /** | |
4979 | * pevent_register_print_function - register a helper function | |
4980 | * @pevent: the handle to the pevent | |
4981 | * @func: the function to process the helper function | |
16e6b8fd | 4982 | * @ret_type: the return type of the helper function |
f7d82350 SR |
4983 | * @name: the name of the helper function |
4984 | * @parameters: A list of enum pevent_func_arg_type | |
4985 | * | |
4986 | * Some events may have helper functions in the print format arguments. | |
16e6b8fd | 4987 | * This allows a plugin to dynamically create a way to process one |
f7d82350 SR |
4988 | * of these functions. |
4989 | * | |
4990 | * The @parameters is a variable list of pevent_func_arg_type enums that | |
4991 | * must end with PEVENT_FUNC_ARG_VOID. | |
4992 | */ | |
4993 | int pevent_register_print_function(struct pevent *pevent, | |
4994 | pevent_func_handler func, | |
4995 | enum pevent_func_arg_type ret_type, | |
4996 | char *name, ...) | |
4997 | { | |
4998 | struct pevent_function_handler *func_handle; | |
4999 | struct pevent_func_params **next_param; | |
5000 | struct pevent_func_params *param; | |
5001 | enum pevent_func_arg_type type; | |
5002 | va_list ap; | |
5003 | ||
5004 | func_handle = find_func_handler(pevent, name); | |
5005 | if (func_handle) { | |
5006 | /* | |
5007 | * This is most like caused by the users own | |
5008 | * plugins updating the function. This overrides the | |
5009 | * system defaults. | |
5010 | */ | |
5011 | pr_stat("override of function helper '%s'", name); | |
5012 | remove_func_handler(pevent, name); | |
5013 | } | |
5014 | ||
5015 | func_handle = malloc_or_die(sizeof(*func_handle)); | |
5016 | memset(func_handle, 0, sizeof(*func_handle)); | |
5017 | ||
5018 | func_handle->ret_type = ret_type; | |
5019 | func_handle->name = strdup(name); | |
5020 | func_handle->func = func; | |
5021 | if (!func_handle->name) | |
5022 | die("Failed to allocate function name"); | |
5023 | ||
5024 | next_param = &(func_handle->params); | |
5025 | va_start(ap, name); | |
5026 | for (;;) { | |
5027 | type = va_arg(ap, enum pevent_func_arg_type); | |
5028 | if (type == PEVENT_FUNC_ARG_VOID) | |
5029 | break; | |
5030 | ||
5031 | if (type < 0 || type >= PEVENT_FUNC_ARG_MAX_TYPES) { | |
5032 | warning("Invalid argument type %d", type); | |
5033 | goto out_free; | |
5034 | } | |
5035 | ||
5036 | param = malloc_or_die(sizeof(*param)); | |
5037 | param->type = type; | |
5038 | param->next = NULL; | |
5039 | ||
5040 | *next_param = param; | |
5041 | next_param = &(param->next); | |
5042 | ||
5043 | func_handle->nr_args++; | |
5044 | } | |
5045 | va_end(ap); | |
5046 | ||
5047 | func_handle->next = pevent->func_handlers; | |
5048 | pevent->func_handlers = func_handle; | |
5049 | ||
5050 | return 0; | |
5051 | out_free: | |
5052 | va_end(ap); | |
5053 | free_func_handle(func_handle); | |
5054 | return -1; | |
5055 | } | |
5056 | ||
5057 | /** | |
16e6b8fd | 5058 | * pevent_register_event_handler - register a way to parse an event |
f7d82350 SR |
5059 | * @pevent: the handle to the pevent |
5060 | * @id: the id of the event to register | |
5061 | * @sys_name: the system name the event belongs to | |
5062 | * @event_name: the name of the event | |
5063 | * @func: the function to call to parse the event information | |
16e6b8fd | 5064 | * @context: the data to be passed to @func |
f7d82350 SR |
5065 | * |
5066 | * This function allows a developer to override the parsing of | |
5067 | * a given event. If for some reason the default print format | |
5068 | * is not sufficient, this function will register a function | |
5069 | * for an event to be used to parse the data instead. | |
5070 | * | |
5071 | * If @id is >= 0, then it is used to find the event. | |
5072 | * else @sys_name and @event_name are used. | |
5073 | */ | |
5074 | int pevent_register_event_handler(struct pevent *pevent, | |
5075 | int id, char *sys_name, char *event_name, | |
5076 | pevent_event_handler_func func, | |
5077 | void *context) | |
5078 | { | |
5079 | struct event_format *event; | |
5080 | struct event_handler *handle; | |
5081 | ||
5082 | if (id >= 0) { | |
5083 | /* search by id */ | |
5084 | event = pevent_find_event(pevent, id); | |
5085 | if (!event) | |
5086 | goto not_found; | |
5087 | if (event_name && (strcmp(event_name, event->name) != 0)) | |
5088 | goto not_found; | |
5089 | if (sys_name && (strcmp(sys_name, event->system) != 0)) | |
5090 | goto not_found; | |
5091 | } else { | |
5092 | event = pevent_find_event_by_name(pevent, sys_name, event_name); | |
5093 | if (!event) | |
5094 | goto not_found; | |
5095 | } | |
5096 | ||
5097 | pr_stat("overriding event (%d) %s:%s with new print handler", | |
5098 | event->id, event->system, event->name); | |
5099 | ||
5100 | event->handler = func; | |
5101 | event->context = context; | |
5102 | return 0; | |
5103 | ||
5104 | not_found: | |
5105 | /* Save for later use. */ | |
5106 | handle = malloc_or_die(sizeof(*handle)); | |
42c80139 | 5107 | memset(handle, 0, sizeof(*handle)); |
f7d82350 SR |
5108 | handle->id = id; |
5109 | if (event_name) | |
5110 | handle->event_name = strdup(event_name); | |
5111 | if (sys_name) | |
5112 | handle->sys_name = strdup(sys_name); | |
5113 | ||
ca63858e NK |
5114 | if ((event_name && !handle->event_name) || |
5115 | (sys_name && !handle->sys_name)) { | |
5116 | die("Failed to allocate event/sys name"); | |
5117 | } | |
5118 | ||
f7d82350 SR |
5119 | handle->func = func; |
5120 | handle->next = pevent->handlers; | |
5121 | pevent->handlers = handle; | |
5122 | handle->context = context; | |
5123 | ||
5124 | return -1; | |
5125 | } | |
5126 | ||
5127 | /** | |
5128 | * pevent_alloc - create a pevent handle | |
5129 | */ | |
5130 | struct pevent *pevent_alloc(void) | |
5131 | { | |
5132 | struct pevent *pevent; | |
5133 | ||
5134 | pevent = malloc(sizeof(*pevent)); | |
5135 | if (!pevent) | |
5136 | return NULL; | |
5137 | memset(pevent, 0, sizeof(*pevent)); | |
5138 | pevent->ref_count = 1; | |
5139 | ||
5140 | return pevent; | |
5141 | } | |
5142 | ||
5143 | void pevent_ref(struct pevent *pevent) | |
5144 | { | |
5145 | pevent->ref_count++; | |
5146 | } | |
5147 | ||
5148 | static void free_format_fields(struct format_field *field) | |
5149 | { | |
5150 | struct format_field *next; | |
5151 | ||
5152 | while (field) { | |
5153 | next = field->next; | |
5154 | free(field->type); | |
5155 | free(field->name); | |
5156 | free(field); | |
5157 | field = next; | |
5158 | } | |
5159 | } | |
5160 | ||
5161 | static void free_formats(struct format *format) | |
5162 | { | |
5163 | free_format_fields(format->common_fields); | |
5164 | free_format_fields(format->fields); | |
5165 | } | |
5166 | ||
5167 | static void free_event(struct event_format *event) | |
5168 | { | |
5169 | free(event->name); | |
5170 | free(event->system); | |
5171 | ||
5172 | free_formats(&event->format); | |
5173 | ||
5174 | free(event->print_fmt.format); | |
5175 | free_args(event->print_fmt.args); | |
5176 | ||
5177 | free(event); | |
5178 | } | |
5179 | ||
5180 | /** | |
5181 | * pevent_free - free a pevent handle | |
5182 | * @pevent: the pevent handle to free | |
5183 | */ | |
5184 | void pevent_free(struct pevent *pevent) | |
5185 | { | |
a2525a08 SR |
5186 | struct cmdline_list *cmdlist, *cmdnext; |
5187 | struct func_list *funclist, *funcnext; | |
5188 | struct printk_list *printklist, *printknext; | |
f7d82350 SR |
5189 | struct pevent_function_handler *func_handler; |
5190 | struct event_handler *handle; | |
5191 | int i; | |
5192 | ||
a2525a08 SR |
5193 | if (!pevent) |
5194 | return; | |
5195 | ||
5196 | cmdlist = pevent->cmdlist; | |
5197 | funclist = pevent->funclist; | |
5198 | printklist = pevent->printklist; | |
5199 | ||
f7d82350 SR |
5200 | pevent->ref_count--; |
5201 | if (pevent->ref_count) | |
5202 | return; | |
5203 | ||
5204 | if (pevent->cmdlines) { | |
5205 | for (i = 0; i < pevent->cmdline_count; i++) | |
5206 | free(pevent->cmdlines[i].comm); | |
5207 | free(pevent->cmdlines); | |
5208 | } | |
5209 | ||
5210 | while (cmdlist) { | |
5211 | cmdnext = cmdlist->next; | |
5212 | free(cmdlist->comm); | |
5213 | free(cmdlist); | |
5214 | cmdlist = cmdnext; | |
5215 | } | |
5216 | ||
5217 | if (pevent->func_map) { | |
5218 | for (i = 0; i < pevent->func_count; i++) { | |
5219 | free(pevent->func_map[i].func); | |
5220 | free(pevent->func_map[i].mod); | |
5221 | } | |
5222 | free(pevent->func_map); | |
5223 | } | |
5224 | ||
5225 | while (funclist) { | |
5226 | funcnext = funclist->next; | |
5227 | free(funclist->func); | |
5228 | free(funclist->mod); | |
5229 | free(funclist); | |
5230 | funclist = funcnext; | |
5231 | } | |
5232 | ||
5233 | while (pevent->func_handlers) { | |
5234 | func_handler = pevent->func_handlers; | |
5235 | pevent->func_handlers = func_handler->next; | |
5236 | free_func_handle(func_handler); | |
5237 | } | |
5238 | ||
5239 | if (pevent->printk_map) { | |
5240 | for (i = 0; i < pevent->printk_count; i++) | |
5241 | free(pevent->printk_map[i].printk); | |
5242 | free(pevent->printk_map); | |
5243 | } | |
5244 | ||
5245 | while (printklist) { | |
5246 | printknext = printklist->next; | |
5247 | free(printklist->printk); | |
5248 | free(printklist); | |
5249 | printklist = printknext; | |
5250 | } | |
5251 | ||
5252 | for (i = 0; i < pevent->nr_events; i++) | |
5253 | free_event(pevent->events[i]); | |
5254 | ||
5255 | while (pevent->handlers) { | |
5256 | handle = pevent->handlers; | |
5257 | pevent->handlers = handle->next; | |
5258 | free_handler(handle); | |
5259 | } | |
5260 | ||
5261 | free(pevent->events); | |
5262 | free(pevent->sort_events); | |
5263 | ||
5264 | free(pevent); | |
5265 | } | |
5266 | ||
5267 | void pevent_unref(struct pevent *pevent) | |
5268 | { | |
5269 | pevent_free(pevent); | |
5270 | } |