Commit | Line | Data |
---|---|---|
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> | |
0cf26013 | 34 | #include <stdint.h> |
f7d82350 SR |
35 | |
36 | #include "event-parse.h" | |
668fe01f | 37 | #include "event-utils.h" |
f7d82350 SR |
38 | |
39 | static const char *input_buf; | |
40 | static unsigned long long input_buf_ptr; | |
41 | static unsigned long long input_buf_siz; | |
42 | ||
5205aec9 TZ |
43 | static int is_flag_field; |
44 | static int is_symbolic_field; | |
45 | ||
f7d82350 SR |
46 | static int show_warning = 1; |
47 | ||
48 | #define do_warning(fmt, ...) \ | |
49 | do { \ | |
50 | if (show_warning) \ | |
51 | warning(fmt, ##__VA_ARGS__); \ | |
52 | } while (0) | |
53 | ||
54 | static void init_input_buf(const char *buf, unsigned long long size) | |
55 | { | |
56 | input_buf = buf; | |
57 | input_buf_siz = size; | |
58 | input_buf_ptr = 0; | |
59 | } | |
60 | ||
61 | const char *pevent_get_input_buf(void) | |
62 | { | |
63 | return input_buf; | |
64 | } | |
65 | ||
66 | unsigned long long pevent_get_input_buf_ptr(void) | |
67 | { | |
68 | return input_buf_ptr; | |
69 | } | |
70 | ||
71 | struct event_handler { | |
72 | struct event_handler *next; | |
73 | int id; | |
74 | const char *sys_name; | |
75 | const char *event_name; | |
76 | pevent_event_handler_func func; | |
77 | void *context; | |
78 | }; | |
79 | ||
80 | struct pevent_func_params { | |
81 | struct pevent_func_params *next; | |
82 | enum pevent_func_arg_type type; | |
83 | }; | |
84 | ||
85 | struct pevent_function_handler { | |
86 | struct pevent_function_handler *next; | |
87 | enum pevent_func_arg_type ret_type; | |
88 | char *name; | |
89 | pevent_func_handler func; | |
90 | struct pevent_func_params *params; | |
91 | int nr_args; | |
92 | }; | |
93 | ||
94 | static unsigned long long | |
95 | process_defined_func(struct trace_seq *s, void *data, int size, | |
96 | struct event_format *event, struct print_arg *arg); | |
97 | ||
98 | static void free_func_handle(struct pevent_function_handler *func); | |
99 | ||
100 | /** | |
101 | * pevent_buffer_init - init buffer for parsing | |
102 | * @buf: buffer to parse | |
103 | * @size: the size of the buffer | |
104 | * | |
105 | * For use with pevent_read_token(), this initializes the internal | |
106 | * buffer that pevent_read_token() will parse. | |
107 | */ | |
108 | void pevent_buffer_init(const char *buf, unsigned long long size) | |
109 | { | |
110 | init_input_buf(buf, size); | |
111 | } | |
112 | ||
113 | void breakpoint(void) | |
114 | { | |
115 | static int x; | |
116 | x++; | |
117 | } | |
118 | ||
119 | struct print_arg *alloc_arg(void) | |
120 | { | |
121 | struct print_arg *arg; | |
122 | ||
123 | arg = malloc_or_die(sizeof(*arg)); | |
124 | if (!arg) | |
125 | return NULL; | |
126 | memset(arg, 0, sizeof(*arg)); | |
127 | ||
128 | return arg; | |
129 | } | |
130 | ||
131 | struct cmdline { | |
132 | char *comm; | |
133 | int pid; | |
134 | }; | |
135 | ||
136 | static int cmdline_cmp(const void *a, const void *b) | |
137 | { | |
138 | const struct cmdline *ca = a; | |
139 | const struct cmdline *cb = b; | |
140 | ||
141 | if (ca->pid < cb->pid) | |
142 | return -1; | |
143 | if (ca->pid > cb->pid) | |
144 | return 1; | |
145 | ||
146 | return 0; | |
147 | } | |
148 | ||
149 | struct cmdline_list { | |
150 | struct cmdline_list *next; | |
151 | char *comm; | |
152 | int pid; | |
153 | }; | |
154 | ||
155 | static int cmdline_init(struct pevent *pevent) | |
156 | { | |
157 | struct cmdline_list *cmdlist = pevent->cmdlist; | |
158 | struct cmdline_list *item; | |
159 | struct cmdline *cmdlines; | |
160 | int i; | |
161 | ||
162 | cmdlines = malloc_or_die(sizeof(*cmdlines) * pevent->cmdline_count); | |
163 | ||
164 | i = 0; | |
165 | while (cmdlist) { | |
166 | cmdlines[i].pid = cmdlist->pid; | |
167 | cmdlines[i].comm = cmdlist->comm; | |
168 | i++; | |
169 | item = cmdlist; | |
170 | cmdlist = cmdlist->next; | |
171 | free(item); | |
172 | } | |
173 | ||
174 | qsort(cmdlines, pevent->cmdline_count, sizeof(*cmdlines), cmdline_cmp); | |
175 | ||
176 | pevent->cmdlines = cmdlines; | |
177 | pevent->cmdlist = NULL; | |
178 | ||
179 | return 0; | |
180 | } | |
181 | ||
182 | static char *find_cmdline(struct pevent *pevent, int pid) | |
183 | { | |
184 | const struct cmdline *comm; | |
185 | struct cmdline key; | |
186 | ||
187 | if (!pid) | |
188 | return "<idle>"; | |
189 | ||
190 | if (!pevent->cmdlines) | |
191 | cmdline_init(pevent); | |
192 | ||
193 | key.pid = pid; | |
194 | ||
195 | comm = bsearch(&key, pevent->cmdlines, pevent->cmdline_count, | |
196 | sizeof(*pevent->cmdlines), cmdline_cmp); | |
197 | ||
198 | if (comm) | |
199 | return comm->comm; | |
200 | return "<...>"; | |
201 | } | |
202 | ||
203 | /** | |
204 | * pevent_pid_is_registered - return if a pid has a cmdline registered | |
205 | * @pevent: handle for the pevent | |
206 | * @pid: The pid to check if it has a cmdline registered with. | |
207 | * | |
208 | * Returns 1 if the pid has a cmdline mapped to it | |
209 | * 0 otherwise. | |
210 | */ | |
211 | int pevent_pid_is_registered(struct pevent *pevent, int pid) | |
212 | { | |
213 | const struct cmdline *comm; | |
214 | struct cmdline key; | |
215 | ||
216 | if (!pid) | |
217 | return 1; | |
218 | ||
219 | if (!pevent->cmdlines) | |
220 | cmdline_init(pevent); | |
221 | ||
222 | key.pid = pid; | |
223 | ||
224 | comm = bsearch(&key, pevent->cmdlines, pevent->cmdline_count, | |
225 | sizeof(*pevent->cmdlines), cmdline_cmp); | |
226 | ||
227 | if (comm) | |
228 | return 1; | |
229 | return 0; | |
230 | } | |
231 | ||
232 | /* | |
233 | * If the command lines have been converted to an array, then | |
234 | * we must add this pid. This is much slower than when cmdlines | |
235 | * are added before the array is initialized. | |
236 | */ | |
237 | static int add_new_comm(struct pevent *pevent, const char *comm, int pid) | |
238 | { | |
239 | struct cmdline *cmdlines = pevent->cmdlines; | |
240 | const struct cmdline *cmdline; | |
241 | struct cmdline key; | |
242 | ||
243 | if (!pid) | |
244 | return 0; | |
245 | ||
246 | /* avoid duplicates */ | |
247 | key.pid = pid; | |
248 | ||
249 | cmdline = bsearch(&key, pevent->cmdlines, pevent->cmdline_count, | |
250 | sizeof(*pevent->cmdlines), cmdline_cmp); | |
251 | if (cmdline) { | |
252 | errno = EEXIST; | |
253 | return -1; | |
254 | } | |
255 | ||
256 | cmdlines = realloc(cmdlines, sizeof(*cmdlines) * (pevent->cmdline_count + 1)); | |
257 | if (!cmdlines) { | |
258 | errno = ENOMEM; | |
259 | return -1; | |
260 | } | |
261 | ||
262 | cmdlines[pevent->cmdline_count].pid = pid; | |
263 | cmdlines[pevent->cmdline_count].comm = strdup(comm); | |
264 | if (!cmdlines[pevent->cmdline_count].comm) | |
265 | die("malloc comm"); | |
266 | ||
267 | if (cmdlines[pevent->cmdline_count].comm) | |
268 | pevent->cmdline_count++; | |
269 | ||
270 | qsort(cmdlines, pevent->cmdline_count, sizeof(*cmdlines), cmdline_cmp); | |
271 | pevent->cmdlines = cmdlines; | |
272 | ||
273 | return 0; | |
274 | } | |
275 | ||
276 | /** | |
277 | * pevent_register_comm - register a pid / comm mapping | |
278 | * @pevent: handle for the pevent | |
279 | * @comm: the command line to register | |
280 | * @pid: the pid to map the command line to | |
281 | * | |
282 | * This adds a mapping to search for command line names with | |
283 | * a given pid. The comm is duplicated. | |
284 | */ | |
285 | int pevent_register_comm(struct pevent *pevent, const char *comm, int pid) | |
286 | { | |
287 | struct cmdline_list *item; | |
288 | ||
289 | if (pevent->cmdlines) | |
290 | return add_new_comm(pevent, comm, pid); | |
291 | ||
292 | item = malloc_or_die(sizeof(*item)); | |
293 | item->comm = strdup(comm); | |
294 | if (!item->comm) | |
295 | die("malloc comm"); | |
296 | item->pid = pid; | |
297 | item->next = pevent->cmdlist; | |
298 | ||
299 | pevent->cmdlist = item; | |
300 | pevent->cmdline_count++; | |
301 | ||
302 | return 0; | |
303 | } | |
304 | ||
305 | struct func_map { | |
306 | unsigned long long addr; | |
307 | char *func; | |
308 | char *mod; | |
309 | }; | |
310 | ||
311 | struct func_list { | |
312 | struct func_list *next; | |
313 | unsigned long long addr; | |
314 | char *func; | |
315 | char *mod; | |
316 | }; | |
317 | ||
318 | static int func_cmp(const void *a, const void *b) | |
319 | { | |
320 | const struct func_map *fa = a; | |
321 | const struct func_map *fb = b; | |
322 | ||
323 | if (fa->addr < fb->addr) | |
324 | return -1; | |
325 | if (fa->addr > fb->addr) | |
326 | return 1; | |
327 | ||
328 | return 0; | |
329 | } | |
330 | ||
331 | /* | |
332 | * We are searching for a record in between, not an exact | |
333 | * match. | |
334 | */ | |
335 | static int func_bcmp(const void *a, const void *b) | |
336 | { | |
337 | const struct func_map *fa = a; | |
338 | const struct func_map *fb = b; | |
339 | ||
340 | if ((fa->addr == fb->addr) || | |
341 | ||
342 | (fa->addr > fb->addr && | |
343 | fa->addr < (fb+1)->addr)) | |
344 | return 0; | |
345 | ||
346 | if (fa->addr < fb->addr) | |
347 | return -1; | |
348 | ||
349 | return 1; | |
350 | } | |
351 | ||
352 | static int func_map_init(struct pevent *pevent) | |
353 | { | |
354 | struct func_list *funclist; | |
355 | struct func_list *item; | |
356 | struct func_map *func_map; | |
357 | int i; | |
358 | ||
359 | func_map = malloc_or_die(sizeof(*func_map) * (pevent->func_count + 1)); | |
360 | funclist = pevent->funclist; | |
361 | ||
362 | i = 0; | |
363 | while (funclist) { | |
364 | func_map[i].func = funclist->func; | |
365 | func_map[i].addr = funclist->addr; | |
366 | func_map[i].mod = funclist->mod; | |
367 | i++; | |
368 | item = funclist; | |
369 | funclist = funclist->next; | |
370 | free(item); | |
371 | } | |
372 | ||
373 | qsort(func_map, pevent->func_count, sizeof(*func_map), func_cmp); | |
374 | ||
375 | /* | |
376 | * Add a special record at the end. | |
377 | */ | |
378 | func_map[pevent->func_count].func = NULL; | |
379 | func_map[pevent->func_count].addr = 0; | |
380 | func_map[pevent->func_count].mod = NULL; | |
381 | ||
382 | pevent->func_map = func_map; | |
383 | pevent->funclist = NULL; | |
384 | ||
385 | return 0; | |
386 | } | |
387 | ||
388 | static struct func_map * | |
389 | find_func(struct pevent *pevent, unsigned long long addr) | |
390 | { | |
391 | struct func_map *func; | |
392 | struct func_map key; | |
393 | ||
394 | if (!pevent->func_map) | |
395 | func_map_init(pevent); | |
396 | ||
397 | key.addr = addr; | |
398 | ||
399 | func = bsearch(&key, pevent->func_map, pevent->func_count, | |
400 | sizeof(*pevent->func_map), func_bcmp); | |
401 | ||
402 | return func; | |
403 | } | |
404 | ||
405 | /** | |
406 | * pevent_find_function - find a function by a given address | |
407 | * @pevent: handle for the pevent | |
408 | * @addr: the address to find the function with | |
409 | * | |
410 | * Returns a pointer to the function stored that has the given | |
411 | * address. Note, the address does not have to be exact, it | |
412 | * will select the function that would contain the address. | |
413 | */ | |
414 | const char *pevent_find_function(struct pevent *pevent, unsigned long long addr) | |
415 | { | |
416 | struct func_map *map; | |
417 | ||
418 | map = find_func(pevent, addr); | |
419 | if (!map) | |
420 | return NULL; | |
421 | ||
422 | return map->func; | |
423 | } | |
424 | ||
425 | /** | |
426 | * pevent_find_function_address - find a function address by a given address | |
427 | * @pevent: handle for the pevent | |
428 | * @addr: the address to find the function with | |
429 | * | |
430 | * Returns the address the function starts at. This can be used in | |
431 | * conjunction with pevent_find_function to print both the function | |
432 | * name and the function offset. | |
433 | */ | |
434 | unsigned long long | |
435 | pevent_find_function_address(struct pevent *pevent, unsigned long long addr) | |
436 | { | |
437 | struct func_map *map; | |
438 | ||
439 | map = find_func(pevent, addr); | |
440 | if (!map) | |
441 | return 0; | |
442 | ||
443 | return map->addr; | |
444 | } | |
445 | ||
446 | /** | |
447 | * pevent_register_function - register a function with a given address | |
448 | * @pevent: handle for the pevent | |
449 | * @function: the function name to register | |
450 | * @addr: the address the function starts at | |
451 | * @mod: the kernel module the function may be in (NULL for none) | |
452 | * | |
453 | * This registers a function name with an address and module. | |
454 | * The @func passed in is duplicated. | |
455 | */ | |
456 | int pevent_register_function(struct pevent *pevent, char *func, | |
457 | unsigned long long addr, char *mod) | |
458 | { | |
459 | struct func_list *item; | |
460 | ||
461 | item = malloc_or_die(sizeof(*item)); | |
462 | ||
463 | item->next = pevent->funclist; | |
464 | item->func = strdup(func); | |
465 | if (mod) | |
466 | item->mod = strdup(mod); | |
467 | else | |
468 | item->mod = NULL; | |
469 | item->addr = addr; | |
470 | ||
ca63858e NK |
471 | if (!item->func || (mod && !item->mod)) |
472 | die("malloc func"); | |
f7d82350 | 473 | |
ca63858e | 474 | pevent->funclist = item; |
f7d82350 SR |
475 | pevent->func_count++; |
476 | ||
477 | return 0; | |
478 | } | |
479 | ||
480 | /** | |
481 | * pevent_print_funcs - print out the stored functions | |
482 | * @pevent: handle for the pevent | |
483 | * | |
484 | * This prints out the stored functions. | |
485 | */ | |
486 | void pevent_print_funcs(struct pevent *pevent) | |
487 | { | |
488 | int i; | |
489 | ||
490 | if (!pevent->func_map) | |
491 | func_map_init(pevent); | |
492 | ||
493 | for (i = 0; i < (int)pevent->func_count; i++) { | |
494 | printf("%016llx %s", | |
495 | pevent->func_map[i].addr, | |
496 | pevent->func_map[i].func); | |
497 | if (pevent->func_map[i].mod) | |
498 | printf(" [%s]\n", pevent->func_map[i].mod); | |
499 | else | |
500 | printf("\n"); | |
501 | } | |
502 | } | |
503 | ||
504 | struct printk_map { | |
505 | unsigned long long addr; | |
506 | char *printk; | |
507 | }; | |
508 | ||
509 | struct printk_list { | |
510 | struct printk_list *next; | |
511 | unsigned long long addr; | |
512 | char *printk; | |
513 | }; | |
514 | ||
515 | static int printk_cmp(const void *a, const void *b) | |
516 | { | |
0fc45ef5 NK |
517 | const struct printk_map *pa = a; |
518 | const struct printk_map *pb = b; | |
f7d82350 | 519 | |
0fc45ef5 | 520 | if (pa->addr < pb->addr) |
f7d82350 | 521 | return -1; |
0fc45ef5 | 522 | if (pa->addr > pb->addr) |
f7d82350 SR |
523 | return 1; |
524 | ||
525 | return 0; | |
526 | } | |
527 | ||
528 | static void printk_map_init(struct pevent *pevent) | |
529 | { | |
530 | struct printk_list *printklist; | |
531 | struct printk_list *item; | |
532 | struct printk_map *printk_map; | |
533 | int i; | |
534 | ||
535 | printk_map = malloc_or_die(sizeof(*printk_map) * (pevent->printk_count + 1)); | |
536 | ||
537 | printklist = pevent->printklist; | |
538 | ||
539 | i = 0; | |
540 | while (printklist) { | |
541 | printk_map[i].printk = printklist->printk; | |
542 | printk_map[i].addr = printklist->addr; | |
543 | i++; | |
544 | item = printklist; | |
545 | printklist = printklist->next; | |
546 | free(item); | |
547 | } | |
548 | ||
549 | qsort(printk_map, pevent->printk_count, sizeof(*printk_map), printk_cmp); | |
550 | ||
551 | pevent->printk_map = printk_map; | |
552 | pevent->printklist = NULL; | |
553 | } | |
554 | ||
555 | static struct printk_map * | |
556 | find_printk(struct pevent *pevent, unsigned long long addr) | |
557 | { | |
558 | struct printk_map *printk; | |
559 | struct printk_map key; | |
560 | ||
561 | if (!pevent->printk_map) | |
562 | printk_map_init(pevent); | |
563 | ||
564 | key.addr = addr; | |
565 | ||
566 | printk = bsearch(&key, pevent->printk_map, pevent->printk_count, | |
567 | sizeof(*pevent->printk_map), printk_cmp); | |
568 | ||
569 | return printk; | |
570 | } | |
571 | ||
572 | /** | |
573 | * pevent_register_print_string - register a string by its address | |
574 | * @pevent: handle for the pevent | |
575 | * @fmt: the string format to register | |
576 | * @addr: the address the string was located at | |
577 | * | |
578 | * This registers a string by the address it was stored in the kernel. | |
579 | * The @fmt passed in is duplicated. | |
580 | */ | |
581 | int pevent_register_print_string(struct pevent *pevent, char *fmt, | |
582 | unsigned long long addr) | |
583 | { | |
584 | struct printk_list *item; | |
585 | ||
586 | item = malloc_or_die(sizeof(*item)); | |
587 | ||
588 | item->next = pevent->printklist; | |
f7d82350 SR |
589 | item->printk = strdup(fmt); |
590 | item->addr = addr; | |
591 | ||
ca63858e NK |
592 | if (!item->printk) |
593 | die("malloc fmt"); | |
594 | ||
595 | pevent->printklist = item; | |
f7d82350 SR |
596 | pevent->printk_count++; |
597 | ||
598 | return 0; | |
599 | } | |
600 | ||
601 | /** | |
602 | * pevent_print_printk - print out the stored strings | |
603 | * @pevent: handle for the pevent | |
604 | * | |
605 | * This prints the string formats that were stored. | |
606 | */ | |
607 | void pevent_print_printk(struct pevent *pevent) | |
608 | { | |
609 | int i; | |
610 | ||
611 | if (!pevent->printk_map) | |
612 | printk_map_init(pevent); | |
613 | ||
614 | for (i = 0; i < (int)pevent->printk_count; i++) { | |
615 | printf("%016llx %s\n", | |
616 | pevent->printk_map[i].addr, | |
617 | pevent->printk_map[i].printk); | |
618 | } | |
619 | } | |
620 | ||
621 | static struct event_format *alloc_event(void) | |
622 | { | |
623 | struct event_format *event; | |
624 | ||
50d8f9e3 NK |
625 | event = malloc(sizeof(*event)); |
626 | if (!event) | |
627 | return NULL; | |
f7d82350 SR |
628 | memset(event, 0, sizeof(*event)); |
629 | ||
630 | return event; | |
631 | } | |
632 | ||
633 | static void add_event(struct pevent *pevent, struct event_format *event) | |
634 | { | |
635 | int i; | |
636 | ||
f6ced60f NK |
637 | pevent->events = realloc(pevent->events, sizeof(event) * |
638 | (pevent->nr_events + 1)); | |
f7d82350 SR |
639 | if (!pevent->events) |
640 | die("Can not allocate events"); | |
641 | ||
642 | for (i = 0; i < pevent->nr_events; i++) { | |
643 | if (pevent->events[i]->id > event->id) | |
644 | break; | |
645 | } | |
646 | if (i < pevent->nr_events) | |
647 | memmove(&pevent->events[i + 1], | |
648 | &pevent->events[i], | |
649 | sizeof(event) * (pevent->nr_events - i)); | |
650 | ||
651 | pevent->events[i] = event; | |
652 | pevent->nr_events++; | |
653 | ||
654 | event->pevent = pevent; | |
655 | } | |
656 | ||
657 | static int event_item_type(enum event_type type) | |
658 | { | |
659 | switch (type) { | |
660 | case EVENT_ITEM ... EVENT_SQUOTE: | |
661 | return 1; | |
662 | case EVENT_ERROR ... EVENT_DELIM: | |
663 | default: | |
664 | return 0; | |
665 | } | |
666 | } | |
667 | ||
668 | static void free_flag_sym(struct print_flag_sym *fsym) | |
669 | { | |
670 | struct print_flag_sym *next; | |
671 | ||
672 | while (fsym) { | |
673 | next = fsym->next; | |
674 | free(fsym->value); | |
675 | free(fsym->str); | |
676 | free(fsym); | |
677 | fsym = next; | |
678 | } | |
679 | } | |
680 | ||
681 | static void free_arg(struct print_arg *arg) | |
682 | { | |
683 | struct print_arg *farg; | |
684 | ||
685 | if (!arg) | |
686 | return; | |
687 | ||
688 | switch (arg->type) { | |
689 | case PRINT_ATOM: | |
690 | free(arg->atom.atom); | |
691 | break; | |
692 | case PRINT_FIELD: | |
693 | free(arg->field.name); | |
694 | break; | |
695 | case PRINT_FLAGS: | |
696 | free_arg(arg->flags.field); | |
697 | free(arg->flags.delim); | |
698 | free_flag_sym(arg->flags.flags); | |
699 | break; | |
700 | case PRINT_SYMBOL: | |
701 | free_arg(arg->symbol.field); | |
702 | free_flag_sym(arg->symbol.symbols); | |
703 | break; | |
e080e6f1 NK |
704 | case PRINT_HEX: |
705 | free_arg(arg->hex.field); | |
706 | free_arg(arg->hex.size); | |
707 | break; | |
f7d82350 SR |
708 | case PRINT_TYPE: |
709 | free(arg->typecast.type); | |
710 | free_arg(arg->typecast.item); | |
711 | break; | |
712 | case PRINT_STRING: | |
713 | case PRINT_BSTRING: | |
714 | free(arg->string.string); | |
715 | break; | |
716 | case PRINT_DYNAMIC_ARRAY: | |
717 | free(arg->dynarray.index); | |
718 | break; | |
719 | case PRINT_OP: | |
720 | free(arg->op.op); | |
721 | free_arg(arg->op.left); | |
722 | free_arg(arg->op.right); | |
723 | break; | |
724 | case PRINT_FUNC: | |
725 | while (arg->func.args) { | |
726 | farg = arg->func.args; | |
727 | arg->func.args = farg->next; | |
728 | free_arg(farg); | |
729 | } | |
730 | break; | |
731 | ||
732 | case PRINT_NULL: | |
733 | default: | |
734 | break; | |
735 | } | |
736 | ||
737 | free(arg); | |
738 | } | |
739 | ||
740 | static enum event_type get_type(int ch) | |
741 | { | |
742 | if (ch == '\n') | |
743 | return EVENT_NEWLINE; | |
744 | if (isspace(ch)) | |
745 | return EVENT_SPACE; | |
746 | if (isalnum(ch) || ch == '_') | |
747 | return EVENT_ITEM; | |
748 | if (ch == '\'') | |
749 | return EVENT_SQUOTE; | |
750 | if (ch == '"') | |
751 | return EVENT_DQUOTE; | |
752 | if (!isprint(ch)) | |
753 | return EVENT_NONE; | |
754 | if (ch == '(' || ch == ')' || ch == ',') | |
755 | return EVENT_DELIM; | |
756 | ||
757 | return EVENT_OP; | |
758 | } | |
759 | ||
760 | static int __read_char(void) | |
761 | { | |
762 | if (input_buf_ptr >= input_buf_siz) | |
763 | return -1; | |
764 | ||
765 | return input_buf[input_buf_ptr++]; | |
766 | } | |
767 | ||
768 | static int __peek_char(void) | |
769 | { | |
770 | if (input_buf_ptr >= input_buf_siz) | |
771 | return -1; | |
772 | ||
773 | return input_buf[input_buf_ptr]; | |
774 | } | |
775 | ||
776 | /** | |
777 | * pevent_peek_char - peek at the next character that will be read | |
778 | * | |
779 | * Returns the next character read, or -1 if end of buffer. | |
780 | */ | |
781 | int pevent_peek_char(void) | |
782 | { | |
783 | return __peek_char(); | |
784 | } | |
785 | ||
deba3fb2 NK |
786 | static int extend_token(char **tok, char *buf, int size) |
787 | { | |
788 | char *newtok = realloc(*tok, size); | |
789 | ||
790 | if (!newtok) { | |
791 | free(*tok); | |
792 | *tok = NULL; | |
793 | return -1; | |
794 | } | |
795 | ||
796 | if (!*tok) | |
797 | strcpy(newtok, buf); | |
798 | else | |
799 | strcat(newtok, buf); | |
800 | *tok = newtok; | |
801 | ||
802 | return 0; | |
803 | } | |
804 | ||
f7d82350 SR |
805 | static enum event_type force_token(const char *str, char **tok); |
806 | ||
807 | static enum event_type __read_token(char **tok) | |
808 | { | |
809 | char buf[BUFSIZ]; | |
810 | int ch, last_ch, quote_ch, next_ch; | |
811 | int i = 0; | |
812 | int tok_size = 0; | |
813 | enum event_type type; | |
814 | ||
815 | *tok = NULL; | |
816 | ||
817 | ||
818 | ch = __read_char(); | |
819 | if (ch < 0) | |
820 | return EVENT_NONE; | |
821 | ||
822 | type = get_type(ch); | |
823 | if (type == EVENT_NONE) | |
824 | return type; | |
825 | ||
826 | buf[i++] = ch; | |
827 | ||
828 | switch (type) { | |
829 | case EVENT_NEWLINE: | |
830 | case EVENT_DELIM: | |
831 | *tok = malloc_or_die(2); | |
832 | (*tok)[0] = ch; | |
833 | (*tok)[1] = 0; | |
834 | return type; | |
835 | ||
836 | case EVENT_OP: | |
837 | switch (ch) { | |
838 | case '-': | |
839 | next_ch = __peek_char(); | |
840 | if (next_ch == '>') { | |
841 | buf[i++] = __read_char(); | |
842 | break; | |
843 | } | |
844 | /* fall through */ | |
845 | case '+': | |
846 | case '|': | |
847 | case '&': | |
848 | case '>': | |
849 | case '<': | |
850 | last_ch = ch; | |
851 | ch = __peek_char(); | |
852 | if (ch != last_ch) | |
853 | goto test_equal; | |
854 | buf[i++] = __read_char(); | |
855 | switch (last_ch) { | |
856 | case '>': | |
857 | case '<': | |
858 | goto test_equal; | |
859 | default: | |
860 | break; | |
861 | } | |
862 | break; | |
863 | case '!': | |
864 | case '=': | |
865 | goto test_equal; | |
866 | default: /* what should we do instead? */ | |
867 | break; | |
868 | } | |
869 | buf[i] = 0; | |
870 | *tok = strdup(buf); | |
871 | return type; | |
872 | ||
873 | test_equal: | |
874 | ch = __peek_char(); | |
875 | if (ch == '=') | |
876 | buf[i++] = __read_char(); | |
877 | goto out; | |
878 | ||
879 | case EVENT_DQUOTE: | |
880 | case EVENT_SQUOTE: | |
881 | /* don't keep quotes */ | |
882 | i--; | |
883 | quote_ch = ch; | |
884 | last_ch = 0; | |
885 | concat: | |
886 | do { | |
887 | if (i == (BUFSIZ - 1)) { | |
888 | buf[i] = 0; | |
f7d82350 | 889 | tok_size += BUFSIZ; |
deba3fb2 NK |
890 | |
891 | if (extend_token(tok, buf, tok_size) < 0) | |
892 | return EVENT_NONE; | |
f7d82350 SR |
893 | i = 0; |
894 | } | |
895 | last_ch = ch; | |
896 | ch = __read_char(); | |
897 | buf[i++] = ch; | |
898 | /* the '\' '\' will cancel itself */ | |
899 | if (ch == '\\' && last_ch == '\\') | |
900 | last_ch = 0; | |
901 | } while (ch != quote_ch || last_ch == '\\'); | |
902 | /* remove the last quote */ | |
903 | i--; | |
904 | ||
905 | /* | |
906 | * For strings (double quotes) check the next token. | |
907 | * If it is another string, concatinate the two. | |
908 | */ | |
909 | if (type == EVENT_DQUOTE) { | |
910 | unsigned long long save_input_buf_ptr = input_buf_ptr; | |
911 | ||
912 | do { | |
913 | ch = __read_char(); | |
914 | } while (isspace(ch)); | |
915 | if (ch == '"') | |
916 | goto concat; | |
917 | input_buf_ptr = save_input_buf_ptr; | |
918 | } | |
919 | ||
920 | goto out; | |
921 | ||
922 | case EVENT_ERROR ... EVENT_SPACE: | |
923 | case EVENT_ITEM: | |
924 | default: | |
925 | break; | |
926 | } | |
927 | ||
928 | while (get_type(__peek_char()) == type) { | |
929 | if (i == (BUFSIZ - 1)) { | |
930 | buf[i] = 0; | |
deba3fb2 | 931 | tok_size += BUFSIZ; |
f7d82350 | 932 | |
deba3fb2 | 933 | if (extend_token(tok, buf, tok_size) < 0) |
f7d82350 | 934 | return EVENT_NONE; |
f7d82350 SR |
935 | i = 0; |
936 | } | |
937 | ch = __read_char(); | |
938 | buf[i++] = ch; | |
939 | } | |
940 | ||
941 | out: | |
942 | buf[i] = 0; | |
deba3fb2 | 943 | if (extend_token(tok, buf, tok_size + i + 1) < 0) |
f7d82350 SR |
944 | return EVENT_NONE; |
945 | ||
946 | if (type == EVENT_ITEM) { | |
947 | /* | |
948 | * Older versions of the kernel has a bug that | |
949 | * creates invalid symbols and will break the mac80211 | |
950 | * parsing. This is a work around to that bug. | |
951 | * | |
952 | * See Linux kernel commit: | |
953 | * 811cb50baf63461ce0bdb234927046131fc7fa8b | |
954 | */ | |
955 | if (strcmp(*tok, "LOCAL_PR_FMT") == 0) { | |
956 | free(*tok); | |
957 | *tok = NULL; | |
958 | return force_token("\"\%s\" ", tok); | |
959 | } else if (strcmp(*tok, "STA_PR_FMT") == 0) { | |
960 | free(*tok); | |
961 | *tok = NULL; | |
962 | return force_token("\" sta:%pM\" ", tok); | |
963 | } else if (strcmp(*tok, "VIF_PR_FMT") == 0) { | |
964 | free(*tok); | |
965 | *tok = NULL; | |
966 | return force_token("\" vif:%p(%d)\" ", tok); | |
967 | } | |
968 | } | |
969 | ||
970 | return type; | |
971 | } | |
972 | ||
973 | static enum event_type force_token(const char *str, char **tok) | |
974 | { | |
975 | const char *save_input_buf; | |
976 | unsigned long long save_input_buf_ptr; | |
977 | unsigned long long save_input_buf_siz; | |
978 | enum event_type type; | |
979 | ||
980 | /* save off the current input pointers */ | |
981 | save_input_buf = input_buf; | |
982 | save_input_buf_ptr = input_buf_ptr; | |
983 | save_input_buf_siz = input_buf_siz; | |
984 | ||
985 | init_input_buf(str, strlen(str)); | |
986 | ||
987 | type = __read_token(tok); | |
988 | ||
989 | /* reset back to original token */ | |
990 | input_buf = save_input_buf; | |
991 | input_buf_ptr = save_input_buf_ptr; | |
992 | input_buf_siz = save_input_buf_siz; | |
993 | ||
994 | return type; | |
995 | } | |
996 | ||
997 | static void free_token(char *tok) | |
998 | { | |
999 | if (tok) | |
1000 | free(tok); | |
1001 | } | |
1002 | ||
1003 | static enum event_type read_token(char **tok) | |
1004 | { | |
1005 | enum event_type type; | |
1006 | ||
1007 | for (;;) { | |
1008 | type = __read_token(tok); | |
1009 | if (type != EVENT_SPACE) | |
1010 | return type; | |
1011 | ||
1012 | free_token(*tok); | |
1013 | } | |
1014 | ||
1015 | /* not reached */ | |
1016 | *tok = NULL; | |
1017 | return EVENT_NONE; | |
1018 | } | |
1019 | ||
1020 | /** | |
1021 | * pevent_read_token - access to utilites to use the pevent parser | |
1022 | * @tok: The token to return | |
1023 | * | |
1024 | * This will parse tokens from the string given by | |
1025 | * pevent_init_data(). | |
1026 | * | |
1027 | * Returns the token type. | |
1028 | */ | |
1029 | enum event_type pevent_read_token(char **tok) | |
1030 | { | |
1031 | return read_token(tok); | |
1032 | } | |
1033 | ||
1034 | /** | |
1035 | * pevent_free_token - free a token returned by pevent_read_token | |
1036 | * @token: the token to free | |
1037 | */ | |
1038 | void pevent_free_token(char *token) | |
1039 | { | |
1040 | free_token(token); | |
1041 | } | |
1042 | ||
1043 | /* no newline */ | |
1044 | static enum event_type read_token_item(char **tok) | |
1045 | { | |
1046 | enum event_type type; | |
1047 | ||
1048 | for (;;) { | |
1049 | type = __read_token(tok); | |
1050 | if (type != EVENT_SPACE && type != EVENT_NEWLINE) | |
1051 | return type; | |
1052 | free_token(*tok); | |
1053 | *tok = NULL; | |
1054 | } | |
1055 | ||
1056 | /* not reached */ | |
1057 | *tok = NULL; | |
1058 | return EVENT_NONE; | |
1059 | } | |
1060 | ||
1061 | static int test_type(enum event_type type, enum event_type expect) | |
1062 | { | |
1063 | if (type != expect) { | |
1064 | do_warning("Error: expected type %d but read %d", | |
1065 | expect, type); | |
1066 | return -1; | |
1067 | } | |
1068 | return 0; | |
1069 | } | |
1070 | ||
1071 | static int test_type_token(enum event_type type, const char *token, | |
1072 | enum event_type expect, const char *expect_tok) | |
1073 | { | |
1074 | if (type != expect) { | |
1075 | do_warning("Error: expected type %d but read %d", | |
1076 | expect, type); | |
1077 | return -1; | |
1078 | } | |
1079 | ||
1080 | if (strcmp(token, expect_tok) != 0) { | |
1081 | do_warning("Error: expected '%s' but read '%s'", | |
1082 | expect_tok, token); | |
1083 | return -1; | |
1084 | } | |
1085 | return 0; | |
1086 | } | |
1087 | ||
1088 | static int __read_expect_type(enum event_type expect, char **tok, int newline_ok) | |
1089 | { | |
1090 | enum event_type type; | |
1091 | ||
1092 | if (newline_ok) | |
1093 | type = read_token(tok); | |
1094 | else | |
1095 | type = read_token_item(tok); | |
1096 | return test_type(type, expect); | |
1097 | } | |
1098 | ||
1099 | static int read_expect_type(enum event_type expect, char **tok) | |
1100 | { | |
1101 | return __read_expect_type(expect, tok, 1); | |
1102 | } | |
1103 | ||
1104 | static int __read_expected(enum event_type expect, const char *str, | |
1105 | int newline_ok) | |
1106 | { | |
1107 | enum event_type type; | |
1108 | char *token; | |
1109 | int ret; | |
1110 | ||
1111 | if (newline_ok) | |
1112 | type = read_token(&token); | |
1113 | else | |
1114 | type = read_token_item(&token); | |
1115 | ||
1116 | ret = test_type_token(type, token, expect, str); | |
1117 | ||
1118 | free_token(token); | |
1119 | ||
1120 | return ret; | |
1121 | } | |
1122 | ||
1123 | static int read_expected(enum event_type expect, const char *str) | |
1124 | { | |
1125 | return __read_expected(expect, str, 1); | |
1126 | } | |
1127 | ||
1128 | static int read_expected_item(enum event_type expect, const char *str) | |
1129 | { | |
1130 | return __read_expected(expect, str, 0); | |
1131 | } | |
1132 | ||
1133 | static char *event_read_name(void) | |
1134 | { | |
1135 | char *token; | |
1136 | ||
1137 | if (read_expected(EVENT_ITEM, "name") < 0) | |
1138 | return NULL; | |
1139 | ||
1140 | if (read_expected(EVENT_OP, ":") < 0) | |
1141 | return NULL; | |
1142 | ||
1143 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
1144 | goto fail; | |
1145 | ||
1146 | return token; | |
1147 | ||
1148 | fail: | |
1149 | free_token(token); | |
1150 | return NULL; | |
1151 | } | |
1152 | ||
1153 | static int event_read_id(void) | |
1154 | { | |
1155 | char *token; | |
1156 | int id; | |
1157 | ||
1158 | if (read_expected_item(EVENT_ITEM, "ID") < 0) | |
1159 | return -1; | |
1160 | ||
1161 | if (read_expected(EVENT_OP, ":") < 0) | |
1162 | return -1; | |
1163 | ||
1164 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
1165 | goto fail; | |
1166 | ||
1167 | id = strtoul(token, NULL, 0); | |
1168 | free_token(token); | |
1169 | return id; | |
1170 | ||
1171 | fail: | |
1172 | free_token(token); | |
1173 | return -1; | |
1174 | } | |
1175 | ||
1176 | static int field_is_string(struct format_field *field) | |
1177 | { | |
1178 | if ((field->flags & FIELD_IS_ARRAY) && | |
1179 | (strstr(field->type, "char") || strstr(field->type, "u8") || | |
1180 | strstr(field->type, "s8"))) | |
1181 | return 1; | |
1182 | ||
1183 | return 0; | |
1184 | } | |
1185 | ||
1186 | static int field_is_dynamic(struct format_field *field) | |
1187 | { | |
1188 | if (strncmp(field->type, "__data_loc", 10) == 0) | |
1189 | return 1; | |
1190 | ||
1191 | return 0; | |
1192 | } | |
1193 | ||
1194 | static int field_is_long(struct format_field *field) | |
1195 | { | |
1196 | /* includes long long */ | |
1197 | if (strstr(field->type, "long")) | |
1198 | return 1; | |
1199 | ||
1200 | return 0; | |
1201 | } | |
1202 | ||
1203 | static int event_read_fields(struct event_format *event, struct format_field **fields) | |
1204 | { | |
1205 | struct format_field *field = NULL; | |
1206 | enum event_type type; | |
1207 | char *token; | |
1208 | char *last_token; | |
1209 | int count = 0; | |
1210 | ||
1211 | do { | |
1212 | type = read_token(&token); | |
1213 | if (type == EVENT_NEWLINE) { | |
1214 | free_token(token); | |
1215 | return count; | |
1216 | } | |
1217 | ||
1218 | count++; | |
1219 | ||
1220 | if (test_type_token(type, token, EVENT_ITEM, "field")) | |
1221 | goto fail; | |
1222 | free_token(token); | |
1223 | ||
1224 | type = read_token(&token); | |
1225 | /* | |
1226 | * The ftrace fields may still use the "special" name. | |
1227 | * Just ignore it. | |
1228 | */ | |
1229 | if (event->flags & EVENT_FL_ISFTRACE && | |
1230 | type == EVENT_ITEM && strcmp(token, "special") == 0) { | |
1231 | free_token(token); | |
1232 | type = read_token(&token); | |
1233 | } | |
1234 | ||
1235 | if (test_type_token(type, token, EVENT_OP, ":") < 0) | |
1236 | goto fail; | |
1237 | ||
1238 | free_token(token); | |
1239 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
1240 | goto fail; | |
1241 | ||
1242 | last_token = token; | |
1243 | ||
1244 | field = malloc_or_die(sizeof(*field)); | |
1245 | memset(field, 0, sizeof(*field)); | |
1246 | field->event = event; | |
1247 | ||
1248 | /* read the rest of the type */ | |
1249 | for (;;) { | |
1250 | type = read_token(&token); | |
1251 | if (type == EVENT_ITEM || | |
1252 | (type == EVENT_OP && strcmp(token, "*") == 0) || | |
1253 | /* | |
1254 | * Some of the ftrace fields are broken and have | |
1255 | * an illegal "." in them. | |
1256 | */ | |
1257 | (event->flags & EVENT_FL_ISFTRACE && | |
1258 | type == EVENT_OP && strcmp(token, ".") == 0)) { | |
1259 | ||
1260 | if (strcmp(token, "*") == 0) | |
1261 | field->flags |= FIELD_IS_POINTER; | |
1262 | ||
1263 | if (field->type) { | |
d286447f NK |
1264 | char *new_type; |
1265 | new_type = realloc(field->type, | |
1266 | strlen(field->type) + | |
1267 | strlen(last_token) + 2); | |
1268 | if (!new_type) { | |
1269 | free(last_token); | |
1270 | goto fail; | |
1271 | } | |
1272 | field->type = new_type; | |
f7d82350 SR |
1273 | strcat(field->type, " "); |
1274 | strcat(field->type, last_token); | |
1275 | free(last_token); | |
1276 | } else | |
1277 | field->type = last_token; | |
1278 | last_token = token; | |
1279 | continue; | |
1280 | } | |
1281 | ||
1282 | break; | |
1283 | } | |
1284 | ||
1285 | if (!field->type) { | |
1286 | die("no type found"); | |
1287 | goto fail; | |
1288 | } | |
1289 | field->name = last_token; | |
1290 | ||
1291 | if (test_type(type, EVENT_OP)) | |
1292 | goto fail; | |
1293 | ||
1294 | if (strcmp(token, "[") == 0) { | |
1295 | enum event_type last_type = type; | |
1296 | char *brackets = token; | |
d286447f | 1297 | char *new_brackets; |
f7d82350 SR |
1298 | int len; |
1299 | ||
1300 | field->flags |= FIELD_IS_ARRAY; | |
1301 | ||
1302 | type = read_token(&token); | |
1303 | ||
1304 | if (type == EVENT_ITEM) | |
1305 | field->arraylen = strtoul(token, NULL, 0); | |
1306 | else | |
1307 | field->arraylen = 0; | |
1308 | ||
1309 | while (strcmp(token, "]") != 0) { | |
1310 | if (last_type == EVENT_ITEM && | |
1311 | type == EVENT_ITEM) | |
1312 | len = 2; | |
1313 | else | |
1314 | len = 1; | |
1315 | last_type = type; | |
1316 | ||
d286447f NK |
1317 | new_brackets = realloc(brackets, |
1318 | strlen(brackets) + | |
1319 | strlen(token) + len); | |
1320 | if (!new_brackets) { | |
1321 | free(brackets); | |
1322 | goto fail; | |
1323 | } | |
1324 | brackets = new_brackets; | |
f7d82350 SR |
1325 | if (len == 2) |
1326 | strcat(brackets, " "); | |
1327 | strcat(brackets, token); | |
1328 | /* We only care about the last token */ | |
1329 | field->arraylen = strtoul(token, NULL, 0); | |
1330 | free_token(token); | |
1331 | type = read_token(&token); | |
1332 | if (type == EVENT_NONE) { | |
1333 | die("failed to find token"); | |
1334 | goto fail; | |
1335 | } | |
1336 | } | |
1337 | ||
1338 | free_token(token); | |
1339 | ||
d286447f NK |
1340 | new_brackets = realloc(brackets, strlen(brackets) + 2); |
1341 | if (!new_brackets) { | |
1342 | free(brackets); | |
1343 | goto fail; | |
1344 | } | |
1345 | brackets = new_brackets; | |
f7d82350 SR |
1346 | strcat(brackets, "]"); |
1347 | ||
1348 | /* add brackets to type */ | |
1349 | ||
1350 | type = read_token(&token); | |
1351 | /* | |
1352 | * If the next token is not an OP, then it is of | |
1353 | * the format: type [] item; | |
1354 | */ | |
1355 | if (type == EVENT_ITEM) { | |
d286447f NK |
1356 | char *new_type; |
1357 | new_type = realloc(field->type, | |
1358 | strlen(field->type) + | |
1359 | strlen(field->name) + | |
1360 | strlen(brackets) + 2); | |
1361 | if (!new_type) { | |
1362 | free(brackets); | |
1363 | goto fail; | |
1364 | } | |
1365 | field->type = new_type; | |
f7d82350 SR |
1366 | strcat(field->type, " "); |
1367 | strcat(field->type, field->name); | |
1368 | free_token(field->name); | |
1369 | strcat(field->type, brackets); | |
1370 | field->name = token; | |
1371 | type = read_token(&token); | |
1372 | } else { | |
d286447f NK |
1373 | char *new_type; |
1374 | new_type = realloc(field->type, | |
1375 | strlen(field->type) + | |
1376 | strlen(brackets) + 1); | |
1377 | if (!new_type) { | |
1378 | free(brackets); | |
1379 | goto fail; | |
1380 | } | |
1381 | field->type = new_type; | |
f7d82350 SR |
1382 | strcat(field->type, brackets); |
1383 | } | |
1384 | free(brackets); | |
1385 | } | |
1386 | ||
1387 | if (field_is_string(field)) | |
1388 | field->flags |= FIELD_IS_STRING; | |
1389 | if (field_is_dynamic(field)) | |
1390 | field->flags |= FIELD_IS_DYNAMIC; | |
1391 | if (field_is_long(field)) | |
1392 | field->flags |= FIELD_IS_LONG; | |
1393 | ||
1394 | if (test_type_token(type, token, EVENT_OP, ";")) | |
1395 | goto fail; | |
1396 | free_token(token); | |
1397 | ||
1398 | if (read_expected(EVENT_ITEM, "offset") < 0) | |
1399 | goto fail_expect; | |
1400 | ||
1401 | if (read_expected(EVENT_OP, ":") < 0) | |
1402 | goto fail_expect; | |
1403 | ||
1404 | if (read_expect_type(EVENT_ITEM, &token)) | |
1405 | goto fail; | |
1406 | field->offset = strtoul(token, NULL, 0); | |
1407 | free_token(token); | |
1408 | ||
1409 | if (read_expected(EVENT_OP, ";") < 0) | |
1410 | goto fail_expect; | |
1411 | ||
1412 | if (read_expected(EVENT_ITEM, "size") < 0) | |
1413 | goto fail_expect; | |
1414 | ||
1415 | if (read_expected(EVENT_OP, ":") < 0) | |
1416 | goto fail_expect; | |
1417 | ||
1418 | if (read_expect_type(EVENT_ITEM, &token)) | |
1419 | goto fail; | |
1420 | field->size = strtoul(token, NULL, 0); | |
1421 | free_token(token); | |
1422 | ||
1423 | if (read_expected(EVENT_OP, ";") < 0) | |
1424 | goto fail_expect; | |
1425 | ||
1426 | type = read_token(&token); | |
1427 | if (type != EVENT_NEWLINE) { | |
1428 | /* newer versions of the kernel have a "signed" type */ | |
1429 | if (test_type_token(type, token, EVENT_ITEM, "signed")) | |
1430 | goto fail; | |
1431 | ||
1432 | free_token(token); | |
1433 | ||
1434 | if (read_expected(EVENT_OP, ":") < 0) | |
1435 | goto fail_expect; | |
1436 | ||
1437 | if (read_expect_type(EVENT_ITEM, &token)) | |
1438 | goto fail; | |
1439 | ||
1440 | /* add signed type */ | |
1441 | ||
1442 | free_token(token); | |
1443 | if (read_expected(EVENT_OP, ";") < 0) | |
1444 | goto fail_expect; | |
1445 | ||
1446 | if (read_expect_type(EVENT_NEWLINE, &token)) | |
1447 | goto fail; | |
1448 | } | |
1449 | ||
1450 | free_token(token); | |
1451 | ||
1452 | if (field->flags & FIELD_IS_ARRAY) { | |
1453 | if (field->arraylen) | |
1454 | field->elementsize = field->size / field->arraylen; | |
1455 | else if (field->flags & FIELD_IS_STRING) | |
1456 | field->elementsize = 1; | |
1457 | else | |
1458 | field->elementsize = event->pevent->long_size; | |
1459 | } else | |
1460 | field->elementsize = field->size; | |
1461 | ||
1462 | *fields = field; | |
1463 | fields = &field->next; | |
1464 | ||
1465 | } while (1); | |
1466 | ||
1467 | return 0; | |
1468 | ||
1469 | fail: | |
1470 | free_token(token); | |
1471 | fail_expect: | |
57d34dc5 NK |
1472 | if (field) { |
1473 | free(field->type); | |
1474 | free(field->name); | |
f7d82350 | 1475 | free(field); |
57d34dc5 | 1476 | } |
f7d82350 SR |
1477 | return -1; |
1478 | } | |
1479 | ||
1480 | static int event_read_format(struct event_format *event) | |
1481 | { | |
1482 | char *token; | |
1483 | int ret; | |
1484 | ||
1485 | if (read_expected_item(EVENT_ITEM, "format") < 0) | |
1486 | return -1; | |
1487 | ||
1488 | if (read_expected(EVENT_OP, ":") < 0) | |
1489 | return -1; | |
1490 | ||
1491 | if (read_expect_type(EVENT_NEWLINE, &token)) | |
1492 | goto fail; | |
1493 | free_token(token); | |
1494 | ||
1495 | ret = event_read_fields(event, &event->format.common_fields); | |
1496 | if (ret < 0) | |
1497 | return ret; | |
1498 | event->format.nr_common = ret; | |
1499 | ||
1500 | ret = event_read_fields(event, &event->format.fields); | |
1501 | if (ret < 0) | |
1502 | return ret; | |
1503 | event->format.nr_fields = ret; | |
1504 | ||
1505 | return 0; | |
1506 | ||
1507 | fail: | |
1508 | free_token(token); | |
1509 | return -1; | |
1510 | } | |
1511 | ||
1512 | static enum event_type | |
1513 | process_arg_token(struct event_format *event, struct print_arg *arg, | |
1514 | char **tok, enum event_type type); | |
1515 | ||
1516 | static enum event_type | |
1517 | process_arg(struct event_format *event, struct print_arg *arg, char **tok) | |
1518 | { | |
1519 | enum event_type type; | |
1520 | char *token; | |
1521 | ||
1522 | type = read_token(&token); | |
1523 | *tok = token; | |
1524 | ||
1525 | return process_arg_token(event, arg, tok, type); | |
1526 | } | |
1527 | ||
1528 | static enum event_type | |
1529 | process_op(struct event_format *event, struct print_arg *arg, char **tok); | |
1530 | ||
1531 | static enum event_type | |
1532 | process_cond(struct event_format *event, struct print_arg *top, char **tok) | |
1533 | { | |
1534 | struct print_arg *arg, *left, *right; | |
1535 | enum event_type type; | |
1536 | char *token = NULL; | |
1537 | ||
1538 | arg = alloc_arg(); | |
1539 | left = alloc_arg(); | |
1540 | right = alloc_arg(); | |
1541 | ||
1542 | arg->type = PRINT_OP; | |
1543 | arg->op.left = left; | |
1544 | arg->op.right = right; | |
1545 | ||
1546 | *tok = NULL; | |
1547 | type = process_arg(event, left, &token); | |
1548 | ||
1549 | again: | |
1550 | /* Handle other operations in the arguments */ | |
1551 | if (type == EVENT_OP && strcmp(token, ":") != 0) { | |
1552 | type = process_op(event, left, &token); | |
1553 | goto again; | |
1554 | } | |
1555 | ||
1556 | if (test_type_token(type, token, EVENT_OP, ":")) | |
1557 | goto out_free; | |
1558 | ||
1559 | arg->op.op = token; | |
1560 | ||
1561 | type = process_arg(event, right, &token); | |
1562 | ||
1563 | top->op.right = arg; | |
1564 | ||
1565 | *tok = token; | |
1566 | return type; | |
1567 | ||
1568 | out_free: | |
1569 | /* Top may point to itself */ | |
1570 | top->op.right = NULL; | |
1571 | free_token(token); | |
1572 | free_arg(arg); | |
1573 | return EVENT_ERROR; | |
1574 | } | |
1575 | ||
1576 | static enum event_type | |
1577 | process_array(struct event_format *event, struct print_arg *top, char **tok) | |
1578 | { | |
1579 | struct print_arg *arg; | |
1580 | enum event_type type; | |
1581 | char *token = NULL; | |
1582 | ||
1583 | arg = alloc_arg(); | |
1584 | ||
1585 | *tok = NULL; | |
1586 | type = process_arg(event, arg, &token); | |
1587 | if (test_type_token(type, token, EVENT_OP, "]")) | |
1588 | goto out_free; | |
1589 | ||
1590 | top->op.right = arg; | |
1591 | ||
1592 | free_token(token); | |
1593 | type = read_token_item(&token); | |
1594 | *tok = token; | |
1595 | ||
1596 | return type; | |
1597 | ||
1598 | out_free: | |
1599 | free_token(*tok); | |
1600 | *tok = NULL; | |
1601 | free_arg(arg); | |
1602 | return EVENT_ERROR; | |
1603 | } | |
1604 | ||
1605 | static int get_op_prio(char *op) | |
1606 | { | |
1607 | if (!op[1]) { | |
1608 | switch (op[0]) { | |
1609 | case '~': | |
1610 | case '!': | |
1611 | return 4; | |
1612 | case '*': | |
1613 | case '/': | |
1614 | case '%': | |
1615 | return 6; | |
1616 | case '+': | |
1617 | case '-': | |
1618 | return 7; | |
1619 | /* '>>' and '<<' are 8 */ | |
1620 | case '<': | |
1621 | case '>': | |
1622 | return 9; | |
1623 | /* '==' and '!=' are 10 */ | |
1624 | case '&': | |
1625 | return 11; | |
1626 | case '^': | |
1627 | return 12; | |
1628 | case '|': | |
1629 | return 13; | |
1630 | case '?': | |
1631 | return 16; | |
1632 | default: | |
14ffde0e | 1633 | do_warning("unknown op '%c'", op[0]); |
f7d82350 SR |
1634 | return -1; |
1635 | } | |
1636 | } else { | |
1637 | if (strcmp(op, "++") == 0 || | |
1638 | strcmp(op, "--") == 0) { | |
1639 | return 3; | |
1640 | } else if (strcmp(op, ">>") == 0 || | |
1641 | strcmp(op, "<<") == 0) { | |
1642 | return 8; | |
1643 | } else if (strcmp(op, ">=") == 0 || | |
1644 | strcmp(op, "<=") == 0) { | |
1645 | return 9; | |
1646 | } else if (strcmp(op, "==") == 0 || | |
1647 | strcmp(op, "!=") == 0) { | |
1648 | return 10; | |
1649 | } else if (strcmp(op, "&&") == 0) { | |
1650 | return 14; | |
1651 | } else if (strcmp(op, "||") == 0) { | |
1652 | return 15; | |
1653 | } else { | |
14ffde0e | 1654 | do_warning("unknown op '%s'", op); |
f7d82350 SR |
1655 | return -1; |
1656 | } | |
1657 | } | |
1658 | } | |
1659 | ||
14ffde0e | 1660 | static int set_op_prio(struct print_arg *arg) |
f7d82350 SR |
1661 | { |
1662 | ||
1663 | /* single ops are the greatest */ | |
14ffde0e | 1664 | if (!arg->op.left || arg->op.left->type == PRINT_NULL) |
f7d82350 | 1665 | arg->op.prio = 0; |
14ffde0e VN |
1666 | else |
1667 | arg->op.prio = get_op_prio(arg->op.op); | |
f7d82350 | 1668 | |
14ffde0e | 1669 | return arg->op.prio; |
f7d82350 SR |
1670 | } |
1671 | ||
1672 | /* Note, *tok does not get freed, but will most likely be saved */ | |
1673 | static enum event_type | |
1674 | process_op(struct event_format *event, struct print_arg *arg, char **tok) | |
1675 | { | |
1676 | struct print_arg *left, *right = NULL; | |
1677 | enum event_type type; | |
1678 | char *token; | |
1679 | ||
1680 | /* the op is passed in via tok */ | |
1681 | token = *tok; | |
1682 | ||
1683 | if (arg->type == PRINT_OP && !arg->op.left) { | |
1684 | /* handle single op */ | |
1685 | if (token[1]) { | |
1686 | die("bad op token %s", token); | |
1687 | goto out_free; | |
1688 | } | |
1689 | switch (token[0]) { | |
1690 | case '~': | |
1691 | case '!': | |
1692 | case '+': | |
1693 | case '-': | |
1694 | break; | |
1695 | default: | |
1696 | do_warning("bad op token %s", token); | |
1697 | goto out_free; | |
1698 | ||
1699 | } | |
1700 | ||
1701 | /* make an empty left */ | |
1702 | left = alloc_arg(); | |
1703 | left->type = PRINT_NULL; | |
1704 | arg->op.left = left; | |
1705 | ||
1706 | right = alloc_arg(); | |
1707 | arg->op.right = right; | |
1708 | ||
1709 | /* do not free the token, it belongs to an op */ | |
1710 | *tok = NULL; | |
1711 | type = process_arg(event, right, tok); | |
1712 | ||
1713 | } else if (strcmp(token, "?") == 0) { | |
1714 | ||
1715 | left = alloc_arg(); | |
1716 | /* copy the top arg to the left */ | |
1717 | *left = *arg; | |
1718 | ||
1719 | arg->type = PRINT_OP; | |
1720 | arg->op.op = token; | |
1721 | arg->op.left = left; | |
1722 | arg->op.prio = 0; | |
1723 | ||
1724 | type = process_cond(event, arg, tok); | |
1725 | ||
1726 | } else if (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 | strcmp(token, "!=") == 0) { | |
1741 | ||
1742 | left = alloc_arg(); | |
1743 | ||
1744 | /* copy the top arg to the left */ | |
1745 | *left = *arg; | |
1746 | ||
1747 | arg->type = PRINT_OP; | |
1748 | arg->op.op = token; | |
1749 | arg->op.left = left; | |
1750 | ||
14ffde0e VN |
1751 | if (set_op_prio(arg) == -1) { |
1752 | event->flags |= EVENT_FL_FAILED; | |
d1de1087 NK |
1753 | /* arg->op.op (= token) will be freed at out_free */ |
1754 | arg->op.op = NULL; | |
14ffde0e VN |
1755 | goto out_free; |
1756 | } | |
f7d82350 SR |
1757 | |
1758 | type = read_token_item(&token); | |
1759 | *tok = token; | |
1760 | ||
1761 | /* could just be a type pointer */ | |
1762 | if ((strcmp(arg->op.op, "*") == 0) && | |
1763 | type == EVENT_DELIM && (strcmp(token, ")") == 0)) { | |
d286447f NK |
1764 | char *new_atom; |
1765 | ||
f7d82350 SR |
1766 | if (left->type != PRINT_ATOM) |
1767 | die("bad pointer type"); | |
d286447f | 1768 | new_atom = realloc(left->atom.atom, |
f7d82350 | 1769 | strlen(left->atom.atom) + 3); |
d286447f NK |
1770 | if (!new_atom) |
1771 | goto out_free; | |
1772 | ||
1773 | left->atom.atom = new_atom; | |
f7d82350 SR |
1774 | strcat(left->atom.atom, " *"); |
1775 | free(arg->op.op); | |
1776 | *arg = *left; | |
1777 | free(left); | |
1778 | ||
1779 | return type; | |
1780 | } | |
1781 | ||
1782 | right = alloc_arg(); | |
1783 | type = process_arg_token(event, right, tok, type); | |
1784 | arg->op.right = right; | |
1785 | ||
1786 | } else if (strcmp(token, "[") == 0) { | |
1787 | ||
1788 | left = alloc_arg(); | |
1789 | *left = *arg; | |
1790 | ||
1791 | arg->type = PRINT_OP; | |
1792 | arg->op.op = token; | |
1793 | arg->op.left = left; | |
1794 | ||
1795 | arg->op.prio = 0; | |
1796 | ||
1797 | type = process_array(event, arg, tok); | |
1798 | ||
1799 | } else { | |
1800 | do_warning("unknown op '%s'", token); | |
1801 | event->flags |= EVENT_FL_FAILED; | |
1802 | /* the arg is now the left side */ | |
1803 | goto out_free; | |
1804 | } | |
1805 | ||
1806 | if (type == EVENT_OP && strcmp(*tok, ":") != 0) { | |
1807 | int prio; | |
1808 | ||
1809 | /* higher prios need to be closer to the root */ | |
1810 | prio = get_op_prio(*tok); | |
1811 | ||
1812 | if (prio > arg->op.prio) | |
1813 | return process_op(event, arg, tok); | |
1814 | ||
1815 | return process_op(event, right, tok); | |
1816 | } | |
1817 | ||
1818 | return type; | |
1819 | ||
1820 | out_free: | |
1821 | free_token(token); | |
1822 | *tok = NULL; | |
1823 | return EVENT_ERROR; | |
1824 | } | |
1825 | ||
1826 | static enum event_type | |
1d037ca1 | 1827 | process_entry(struct event_format *event __maybe_unused, struct print_arg *arg, |
f7d82350 SR |
1828 | char **tok) |
1829 | { | |
1830 | enum event_type type; | |
1831 | char *field; | |
1832 | char *token; | |
1833 | ||
1834 | if (read_expected(EVENT_OP, "->") < 0) | |
1835 | goto out_err; | |
1836 | ||
1837 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
1838 | goto out_free; | |
1839 | field = token; | |
1840 | ||
1841 | arg->type = PRINT_FIELD; | |
1842 | arg->field.name = field; | |
1843 | ||
5205aec9 TZ |
1844 | if (is_flag_field) { |
1845 | arg->field.field = pevent_find_any_field(event, arg->field.name); | |
1846 | arg->field.field->flags |= FIELD_IS_FLAG; | |
1847 | is_flag_field = 0; | |
1848 | } else if (is_symbolic_field) { | |
1849 | arg->field.field = pevent_find_any_field(event, arg->field.name); | |
1850 | arg->field.field->flags |= FIELD_IS_SYMBOLIC; | |
1851 | is_symbolic_field = 0; | |
1852 | } | |
1853 | ||
f7d82350 SR |
1854 | type = read_token(&token); |
1855 | *tok = token; | |
1856 | ||
1857 | return type; | |
1858 | ||
1859 | out_free: | |
1860 | free_token(token); | |
1861 | out_err: | |
1862 | *tok = NULL; | |
1863 | return EVENT_ERROR; | |
1864 | } | |
1865 | ||
1866 | static char *arg_eval (struct print_arg *arg); | |
1867 | ||
1868 | static unsigned long long | |
1869 | eval_type_str(unsigned long long val, const char *type, int pointer) | |
1870 | { | |
1871 | int sign = 0; | |
1872 | char *ref; | |
1873 | int len; | |
1874 | ||
1875 | len = strlen(type); | |
1876 | ||
1877 | if (pointer) { | |
1878 | ||
1879 | if (type[len-1] != '*') { | |
1880 | do_warning("pointer expected with non pointer type"); | |
1881 | return val; | |
1882 | } | |
1883 | ||
1884 | ref = malloc_or_die(len); | |
1885 | memcpy(ref, type, len); | |
1886 | ||
1887 | /* chop off the " *" */ | |
1888 | ref[len - 2] = 0; | |
1889 | ||
1890 | val = eval_type_str(val, ref, 0); | |
1891 | free(ref); | |
1892 | return val; | |
1893 | } | |
1894 | ||
1895 | /* check if this is a pointer */ | |
1896 | if (type[len - 1] == '*') | |
1897 | return val; | |
1898 | ||
1899 | /* Try to figure out the arg size*/ | |
1900 | if (strncmp(type, "struct", 6) == 0) | |
1901 | /* all bets off */ | |
1902 | return val; | |
1903 | ||
1904 | if (strcmp(type, "u8") == 0) | |
1905 | return val & 0xff; | |
1906 | ||
1907 | if (strcmp(type, "u16") == 0) | |
1908 | return val & 0xffff; | |
1909 | ||
1910 | if (strcmp(type, "u32") == 0) | |
1911 | return val & 0xffffffff; | |
1912 | ||
1913 | if (strcmp(type, "u64") == 0 || | |
1914 | strcmp(type, "s64")) | |
1915 | return val; | |
1916 | ||
1917 | if (strcmp(type, "s8") == 0) | |
1918 | return (unsigned long long)(char)val & 0xff; | |
1919 | ||
1920 | if (strcmp(type, "s16") == 0) | |
1921 | return (unsigned long long)(short)val & 0xffff; | |
1922 | ||
1923 | if (strcmp(type, "s32") == 0) | |
1924 | return (unsigned long long)(int)val & 0xffffffff; | |
1925 | ||
1926 | if (strncmp(type, "unsigned ", 9) == 0) { | |
1927 | sign = 0; | |
1928 | type += 9; | |
1929 | } | |
1930 | ||
1931 | if (strcmp(type, "char") == 0) { | |
1932 | if (sign) | |
1933 | return (unsigned long long)(char)val & 0xff; | |
1934 | else | |
1935 | return val & 0xff; | |
1936 | } | |
1937 | ||
1938 | if (strcmp(type, "short") == 0) { | |
1939 | if (sign) | |
1940 | return (unsigned long long)(short)val & 0xffff; | |
1941 | else | |
1942 | return val & 0xffff; | |
1943 | } | |
1944 | ||
1945 | if (strcmp(type, "int") == 0) { | |
1946 | if (sign) | |
1947 | return (unsigned long long)(int)val & 0xffffffff; | |
1948 | else | |
1949 | return val & 0xffffffff; | |
1950 | } | |
1951 | ||
1952 | return val; | |
1953 | } | |
1954 | ||
1955 | /* | |
1956 | * Try to figure out the type. | |
1957 | */ | |
1958 | static unsigned long long | |
1959 | eval_type(unsigned long long val, struct print_arg *arg, int pointer) | |
1960 | { | |
1961 | if (arg->type != PRINT_TYPE) | |
1962 | die("expected type argument"); | |
1963 | ||
1964 | return eval_type_str(val, arg->typecast.type, pointer); | |
1965 | } | |
1966 | ||
d69afed5 | 1967 | static int arg_num_eval(struct print_arg *arg, long long *val) |
f7d82350 SR |
1968 | { |
1969 | long long left, right; | |
d69afed5 | 1970 | int ret = 1; |
f7d82350 SR |
1971 | |
1972 | switch (arg->type) { | |
1973 | case PRINT_ATOM: | |
d69afed5 | 1974 | *val = strtoll(arg->atom.atom, NULL, 0); |
f7d82350 SR |
1975 | break; |
1976 | case PRINT_TYPE: | |
d69afed5 VN |
1977 | ret = arg_num_eval(arg->typecast.item, val); |
1978 | if (!ret) | |
1979 | break; | |
1980 | *val = eval_type(*val, arg, 0); | |
f7d82350 SR |
1981 | break; |
1982 | case PRINT_OP: | |
1983 | switch (arg->op.op[0]) { | |
1984 | case '|': | |
d69afed5 VN |
1985 | ret = arg_num_eval(arg->op.left, &left); |
1986 | if (!ret) | |
1987 | break; | |
1988 | ret = arg_num_eval(arg->op.right, &right); | |
1989 | if (!ret) | |
1990 | break; | |
f7d82350 | 1991 | if (arg->op.op[1]) |
d69afed5 | 1992 | *val = left || right; |
f7d82350 | 1993 | else |
d69afed5 | 1994 | *val = left | right; |
f7d82350 SR |
1995 | break; |
1996 | case '&': | |
d69afed5 VN |
1997 | ret = arg_num_eval(arg->op.left, &left); |
1998 | if (!ret) | |
1999 | break; | |
2000 | ret = arg_num_eval(arg->op.right, &right); | |
2001 | if (!ret) | |
2002 | break; | |
f7d82350 | 2003 | if (arg->op.op[1]) |
d69afed5 | 2004 | *val = left && right; |
f7d82350 | 2005 | else |
d69afed5 | 2006 | *val = left & right; |
f7d82350 SR |
2007 | break; |
2008 | case '<': | |
d69afed5 VN |
2009 | ret = arg_num_eval(arg->op.left, &left); |
2010 | if (!ret) | |
2011 | break; | |
2012 | ret = arg_num_eval(arg->op.right, &right); | |
2013 | if (!ret) | |
2014 | break; | |
f7d82350 SR |
2015 | switch (arg->op.op[1]) { |
2016 | case 0: | |
d69afed5 | 2017 | *val = left < right; |
f7d82350 SR |
2018 | break; |
2019 | case '<': | |
d69afed5 | 2020 | *val = left << right; |
f7d82350 SR |
2021 | break; |
2022 | case '=': | |
d69afed5 | 2023 | *val = left <= right; |
f7d82350 SR |
2024 | break; |
2025 | default: | |
d69afed5 VN |
2026 | do_warning("unknown op '%s'", arg->op.op); |
2027 | ret = 0; | |
f7d82350 SR |
2028 | } |
2029 | break; | |
2030 | case '>': | |
d69afed5 VN |
2031 | ret = arg_num_eval(arg->op.left, &left); |
2032 | if (!ret) | |
2033 | break; | |
2034 | ret = arg_num_eval(arg->op.right, &right); | |
2035 | if (!ret) | |
2036 | break; | |
f7d82350 SR |
2037 | switch (arg->op.op[1]) { |
2038 | case 0: | |
d69afed5 | 2039 | *val = left > right; |
f7d82350 SR |
2040 | break; |
2041 | case '>': | |
d69afed5 | 2042 | *val = left >> right; |
f7d82350 SR |
2043 | break; |
2044 | case '=': | |
d69afed5 | 2045 | *val = left >= right; |
f7d82350 SR |
2046 | break; |
2047 | default: | |
d69afed5 VN |
2048 | do_warning("unknown op '%s'", arg->op.op); |
2049 | ret = 0; | |
f7d82350 SR |
2050 | } |
2051 | break; | |
2052 | case '=': | |
d69afed5 VN |
2053 | ret = arg_num_eval(arg->op.left, &left); |
2054 | if (!ret) | |
2055 | break; | |
2056 | ret = arg_num_eval(arg->op.right, &right); | |
2057 | if (!ret) | |
2058 | break; | |
f7d82350 | 2059 | |
d69afed5 VN |
2060 | if (arg->op.op[1] != '=') { |
2061 | do_warning("unknown op '%s'", arg->op.op); | |
2062 | ret = 0; | |
2063 | } else | |
2064 | *val = left == right; | |
f7d82350 SR |
2065 | break; |
2066 | case '!': | |
d69afed5 VN |
2067 | ret = arg_num_eval(arg->op.left, &left); |
2068 | if (!ret) | |
2069 | break; | |
2070 | ret = arg_num_eval(arg->op.right, &right); | |
2071 | if (!ret) | |
2072 | break; | |
f7d82350 SR |
2073 | |
2074 | switch (arg->op.op[1]) { | |
2075 | case '=': | |
d69afed5 | 2076 | *val = left != right; |
f7d82350 SR |
2077 | break; |
2078 | default: | |
d69afed5 VN |
2079 | do_warning("unknown op '%s'", arg->op.op); |
2080 | ret = 0; | |
f7d82350 SR |
2081 | } |
2082 | break; | |
2083 | case '-': | |
2084 | /* check for negative */ | |
2085 | if (arg->op.left->type == PRINT_NULL) | |
2086 | left = 0; | |
2087 | else | |
d69afed5 VN |
2088 | ret = arg_num_eval(arg->op.left, &left); |
2089 | if (!ret) | |
2090 | break; | |
2091 | ret = arg_num_eval(arg->op.right, &right); | |
2092 | if (!ret) | |
2093 | break; | |
2094 | *val = left - right; | |
f7d82350 | 2095 | break; |
b4828598 VN |
2096 | case '+': |
2097 | if (arg->op.left->type == PRINT_NULL) | |
2098 | left = 0; | |
2099 | else | |
2100 | ret = arg_num_eval(arg->op.left, &left); | |
2101 | if (!ret) | |
2102 | break; | |
2103 | ret = arg_num_eval(arg->op.right, &right); | |
2104 | if (!ret) | |
2105 | break; | |
2106 | *val = left + right; | |
2107 | break; | |
f7d82350 | 2108 | default: |
d69afed5 VN |
2109 | do_warning("unknown op '%s'", arg->op.op); |
2110 | ret = 0; | |
f7d82350 SR |
2111 | } |
2112 | break; | |
2113 | ||
2114 | case PRINT_NULL: | |
2115 | case PRINT_FIELD ... PRINT_SYMBOL: | |
2116 | case PRINT_STRING: | |
2117 | case PRINT_BSTRING: | |
2118 | default: | |
d69afed5 VN |
2119 | do_warning("invalid eval type %d", arg->type); |
2120 | ret = 0; | |
f7d82350 SR |
2121 | |
2122 | } | |
d69afed5 | 2123 | return ret; |
f7d82350 SR |
2124 | } |
2125 | ||
2126 | static char *arg_eval (struct print_arg *arg) | |
2127 | { | |
2128 | long long val; | |
2129 | static char buf[20]; | |
2130 | ||
2131 | switch (arg->type) { | |
2132 | case PRINT_ATOM: | |
2133 | return arg->atom.atom; | |
2134 | case PRINT_TYPE: | |
2135 | return arg_eval(arg->typecast.item); | |
2136 | case PRINT_OP: | |
d69afed5 VN |
2137 | if (!arg_num_eval(arg, &val)) |
2138 | break; | |
f7d82350 SR |
2139 | sprintf(buf, "%lld", val); |
2140 | return buf; | |
2141 | ||
2142 | case PRINT_NULL: | |
2143 | case PRINT_FIELD ... PRINT_SYMBOL: | |
2144 | case PRINT_STRING: | |
2145 | case PRINT_BSTRING: | |
2146 | default: | |
2147 | die("invalid eval type %d", arg->type); | |
2148 | break; | |
2149 | } | |
2150 | ||
2151 | return NULL; | |
2152 | } | |
2153 | ||
2154 | static enum event_type | |
2155 | process_fields(struct event_format *event, struct print_flag_sym **list, char **tok) | |
2156 | { | |
2157 | enum event_type type; | |
2158 | struct print_arg *arg = NULL; | |
2159 | struct print_flag_sym *field; | |
2160 | char *token = *tok; | |
2161 | char *value; | |
2162 | ||
2163 | do { | |
2164 | free_token(token); | |
2165 | type = read_token_item(&token); | |
2166 | if (test_type_token(type, token, EVENT_OP, "{")) | |
2167 | break; | |
2168 | ||
2169 | arg = alloc_arg(); | |
2170 | ||
2171 | free_token(token); | |
2172 | type = process_arg(event, arg, &token); | |
00b9da72 SH |
2173 | |
2174 | if (type == EVENT_OP) | |
2175 | type = process_op(event, arg, &token); | |
2176 | ||
2177 | if (type == EVENT_ERROR) | |
2178 | goto out_free; | |
2179 | ||
f7d82350 SR |
2180 | if (test_type_token(type, token, EVENT_DELIM, ",")) |
2181 | goto out_free; | |
2182 | ||
2183 | field = malloc_or_die(sizeof(*field)); | |
54a36258 | 2184 | memset(field, 0, sizeof(*field)); |
f7d82350 SR |
2185 | |
2186 | value = arg_eval(arg); | |
d69afed5 VN |
2187 | if (value == NULL) |
2188 | goto out_free; | |
f7d82350 | 2189 | field->value = strdup(value); |
ca63858e NK |
2190 | if (field->value == NULL) |
2191 | goto out_free; | |
f7d82350 SR |
2192 | |
2193 | free_arg(arg); | |
2194 | arg = alloc_arg(); | |
2195 | ||
2196 | free_token(token); | |
2197 | type = process_arg(event, arg, &token); | |
2198 | if (test_type_token(type, token, EVENT_OP, "}")) | |
2199 | goto out_free; | |
2200 | ||
2201 | value = arg_eval(arg); | |
d69afed5 VN |
2202 | if (value == NULL) |
2203 | goto out_free; | |
f7d82350 | 2204 | field->str = strdup(value); |
ca63858e NK |
2205 | if (field->str == NULL) |
2206 | goto out_free; | |
f7d82350 SR |
2207 | free_arg(arg); |
2208 | arg = NULL; | |
2209 | ||
2210 | *list = field; | |
2211 | list = &field->next; | |
2212 | ||
2213 | free_token(token); | |
2214 | type = read_token_item(&token); | |
2215 | } while (type == EVENT_DELIM && strcmp(token, ",") == 0); | |
2216 | ||
2217 | *tok = token; | |
2218 | return type; | |
2219 | ||
2220 | out_free: | |
2221 | free_arg(arg); | |
2222 | free_token(token); | |
2223 | *tok = NULL; | |
2224 | ||
2225 | return EVENT_ERROR; | |
2226 | } | |
2227 | ||
2228 | static enum event_type | |
2229 | process_flags(struct event_format *event, struct print_arg *arg, char **tok) | |
2230 | { | |
2231 | struct print_arg *field; | |
2232 | enum event_type type; | |
2233 | char *token; | |
2234 | ||
2235 | memset(arg, 0, sizeof(*arg)); | |
2236 | arg->type = PRINT_FLAGS; | |
2237 | ||
2238 | field = alloc_arg(); | |
2239 | ||
2240 | type = process_arg(event, field, &token); | |
2241 | ||
2242 | /* Handle operations in the first argument */ | |
2243 | while (type == EVENT_OP) | |
2244 | type = process_op(event, field, &token); | |
2245 | ||
2246 | if (test_type_token(type, token, EVENT_DELIM, ",")) | |
2247 | goto out_free; | |
2248 | free_token(token); | |
2249 | ||
2250 | arg->flags.field = field; | |
2251 | ||
2252 | type = read_token_item(&token); | |
2253 | if (event_item_type(type)) { | |
2254 | arg->flags.delim = token; | |
2255 | type = read_token_item(&token); | |
2256 | } | |
2257 | ||
2258 | if (test_type_token(type, token, EVENT_DELIM, ",")) | |
2259 | goto out_free; | |
2260 | ||
2261 | type = process_fields(event, &arg->flags.flags, &token); | |
2262 | if (test_type_token(type, token, EVENT_DELIM, ")")) | |
2263 | goto out_free; | |
2264 | ||
2265 | free_token(token); | |
2266 | type = read_token_item(tok); | |
2267 | return type; | |
2268 | ||
2269 | out_free: | |
2270 | free_token(token); | |
2271 | *tok = NULL; | |
2272 | return EVENT_ERROR; | |
2273 | } | |
2274 | ||
2275 | static enum event_type | |
2276 | process_symbols(struct event_format *event, struct print_arg *arg, char **tok) | |
2277 | { | |
2278 | struct print_arg *field; | |
2279 | enum event_type type; | |
2280 | char *token; | |
2281 | ||
2282 | memset(arg, 0, sizeof(*arg)); | |
2283 | arg->type = PRINT_SYMBOL; | |
2284 | ||
2285 | field = alloc_arg(); | |
2286 | ||
2287 | type = process_arg(event, field, &token); | |
2288 | if (test_type_token(type, token, EVENT_DELIM, ",")) | |
2289 | goto out_free; | |
2290 | ||
2291 | arg->symbol.field = field; | |
2292 | ||
2293 | type = process_fields(event, &arg->symbol.symbols, &token); | |
2294 | if (test_type_token(type, token, EVENT_DELIM, ")")) | |
2295 | goto out_free; | |
2296 | ||
2297 | free_token(token); | |
2298 | type = read_token_item(tok); | |
2299 | return type; | |
2300 | ||
2301 | out_free: | |
2302 | free_token(token); | |
2303 | *tok = NULL; | |
2304 | return EVENT_ERROR; | |
2305 | } | |
2306 | ||
e080e6f1 NK |
2307 | static enum event_type |
2308 | process_hex(struct event_format *event, struct print_arg *arg, char **tok) | |
2309 | { | |
2310 | struct print_arg *field; | |
2311 | enum event_type type; | |
2312 | char *token; | |
2313 | ||
2314 | memset(arg, 0, sizeof(*arg)); | |
2315 | arg->type = PRINT_HEX; | |
2316 | ||
2317 | field = alloc_arg(); | |
2318 | type = process_arg(event, field, &token); | |
2319 | ||
2320 | if (test_type_token(type, token, EVENT_DELIM, ",")) | |
2321 | goto out_free; | |
2322 | ||
2323 | arg->hex.field = field; | |
2324 | ||
2325 | free_token(token); | |
2326 | ||
2327 | field = alloc_arg(); | |
2328 | type = process_arg(event, field, &token); | |
2329 | ||
2330 | if (test_type_token(type, token, EVENT_DELIM, ")")) | |
2331 | goto out_free; | |
2332 | ||
2333 | arg->hex.size = field; | |
2334 | ||
2335 | free_token(token); | |
2336 | type = read_token_item(tok); | |
2337 | return type; | |
2338 | ||
2339 | out_free: | |
2340 | free_arg(field); | |
2341 | free_token(token); | |
2342 | *tok = NULL; | |
2343 | return EVENT_ERROR; | |
2344 | } | |
2345 | ||
f7d82350 SR |
2346 | static enum event_type |
2347 | process_dynamic_array(struct event_format *event, struct print_arg *arg, char **tok) | |
2348 | { | |
2349 | struct format_field *field; | |
2350 | enum event_type type; | |
2351 | char *token; | |
2352 | ||
2353 | memset(arg, 0, sizeof(*arg)); | |
2354 | arg->type = PRINT_DYNAMIC_ARRAY; | |
2355 | ||
2356 | /* | |
2357 | * The item within the parenthesis is another field that holds | |
2358 | * the index into where the array starts. | |
2359 | */ | |
2360 | type = read_token(&token); | |
2361 | *tok = token; | |
2362 | if (type != EVENT_ITEM) | |
2363 | goto out_free; | |
2364 | ||
2365 | /* Find the field */ | |
2366 | ||
2367 | field = pevent_find_field(event, token); | |
2368 | if (!field) | |
2369 | goto out_free; | |
2370 | ||
2371 | arg->dynarray.field = field; | |
2372 | arg->dynarray.index = 0; | |
2373 | ||
2374 | if (read_expected(EVENT_DELIM, ")") < 0) | |
2375 | goto out_free; | |
2376 | ||
2377 | free_token(token); | |
2378 | type = read_token_item(&token); | |
2379 | *tok = token; | |
2380 | if (type != EVENT_OP || strcmp(token, "[") != 0) | |
2381 | return type; | |
2382 | ||
2383 | free_token(token); | |
2384 | arg = alloc_arg(); | |
2385 | type = process_arg(event, arg, &token); | |
2386 | if (type == EVENT_ERROR) | |
b3511d05 | 2387 | goto out_free_arg; |
f7d82350 SR |
2388 | |
2389 | if (!test_type_token(type, token, EVENT_OP, "]")) | |
b3511d05 | 2390 | goto out_free_arg; |
f7d82350 SR |
2391 | |
2392 | free_token(token); | |
2393 | type = read_token_item(tok); | |
2394 | return type; | |
2395 | ||
b3511d05 NK |
2396 | out_free_arg: |
2397 | free_arg(arg); | |
f7d82350 | 2398 | out_free: |
f7d82350 SR |
2399 | free_token(token); |
2400 | *tok = NULL; | |
2401 | return EVENT_ERROR; | |
2402 | } | |
2403 | ||
2404 | static enum event_type | |
2405 | process_paren(struct event_format *event, struct print_arg *arg, char **tok) | |
2406 | { | |
2407 | struct print_arg *item_arg; | |
2408 | enum event_type type; | |
2409 | char *token; | |
2410 | ||
2411 | type = process_arg(event, arg, &token); | |
2412 | ||
2413 | if (type == EVENT_ERROR) | |
2414 | goto out_free; | |
2415 | ||
2416 | if (type == EVENT_OP) | |
2417 | type = process_op(event, arg, &token); | |
2418 | ||
2419 | if (type == EVENT_ERROR) | |
2420 | goto out_free; | |
2421 | ||
2422 | if (test_type_token(type, token, EVENT_DELIM, ")")) | |
2423 | goto out_free; | |
2424 | ||
2425 | free_token(token); | |
2426 | type = read_token_item(&token); | |
2427 | ||
2428 | /* | |
2429 | * If the next token is an item or another open paren, then | |
2430 | * this was a typecast. | |
2431 | */ | |
2432 | if (event_item_type(type) || | |
2433 | (type == EVENT_DELIM && strcmp(token, "(") == 0)) { | |
2434 | ||
2435 | /* make this a typecast and contine */ | |
2436 | ||
2437 | /* prevous must be an atom */ | |
2438 | if (arg->type != PRINT_ATOM) | |
2439 | die("previous needed to be PRINT_ATOM"); | |
2440 | ||
2441 | item_arg = alloc_arg(); | |
2442 | ||
2443 | arg->type = PRINT_TYPE; | |
2444 | arg->typecast.type = arg->atom.atom; | |
2445 | arg->typecast.item = item_arg; | |
2446 | type = process_arg_token(event, item_arg, &token, type); | |
2447 | ||
2448 | } | |
2449 | ||
2450 | *tok = token; | |
2451 | return type; | |
2452 | ||
2453 | out_free: | |
2454 | free_token(token); | |
2455 | *tok = NULL; | |
2456 | return EVENT_ERROR; | |
2457 | } | |
2458 | ||
2459 | ||
2460 | static enum event_type | |
1d037ca1 IT |
2461 | process_str(struct event_format *event __maybe_unused, struct print_arg *arg, |
2462 | char **tok) | |
f7d82350 SR |
2463 | { |
2464 | enum event_type type; | |
2465 | char *token; | |
2466 | ||
2467 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
2468 | goto out_free; | |
2469 | ||
2470 | arg->type = PRINT_STRING; | |
2471 | arg->string.string = token; | |
2472 | arg->string.offset = -1; | |
2473 | ||
2474 | if (read_expected(EVENT_DELIM, ")") < 0) | |
2475 | goto out_err; | |
2476 | ||
2477 | type = read_token(&token); | |
2478 | *tok = token; | |
2479 | ||
2480 | return type; | |
2481 | ||
2482 | out_free: | |
2483 | free_token(token); | |
2484 | out_err: | |
2485 | *tok = NULL; | |
2486 | return EVENT_ERROR; | |
2487 | } | |
2488 | ||
2489 | static struct pevent_function_handler * | |
2490 | find_func_handler(struct pevent *pevent, char *func_name) | |
2491 | { | |
2492 | struct pevent_function_handler *func; | |
2493 | ||
2494 | for (func = pevent->func_handlers; func; func = func->next) { | |
2495 | if (strcmp(func->name, func_name) == 0) | |
2496 | break; | |
2497 | } | |
2498 | ||
2499 | return func; | |
2500 | } | |
2501 | ||
2502 | static void remove_func_handler(struct pevent *pevent, char *func_name) | |
2503 | { | |
2504 | struct pevent_function_handler *func; | |
2505 | struct pevent_function_handler **next; | |
2506 | ||
2507 | next = &pevent->func_handlers; | |
2508 | while ((func = *next)) { | |
2509 | if (strcmp(func->name, func_name) == 0) { | |
2510 | *next = func->next; | |
2511 | free_func_handle(func); | |
2512 | break; | |
2513 | } | |
2514 | next = &func->next; | |
2515 | } | |
2516 | } | |
2517 | ||
2518 | static enum event_type | |
2519 | process_func_handler(struct event_format *event, struct pevent_function_handler *func, | |
2520 | struct print_arg *arg, char **tok) | |
2521 | { | |
2522 | struct print_arg **next_arg; | |
2523 | struct print_arg *farg; | |
2524 | enum event_type type; | |
2525 | char *token; | |
2526 | char *test; | |
2527 | int i; | |
2528 | ||
2529 | arg->type = PRINT_FUNC; | |
2530 | arg->func.func = func; | |
2531 | ||
2532 | *tok = NULL; | |
2533 | ||
2534 | next_arg = &(arg->func.args); | |
2535 | for (i = 0; i < func->nr_args; i++) { | |
2536 | farg = alloc_arg(); | |
2537 | type = process_arg(event, farg, &token); | |
2538 | if (i < (func->nr_args - 1)) | |
2539 | test = ","; | |
2540 | else | |
2541 | test = ")"; | |
2542 | ||
2543 | if (test_type_token(type, token, EVENT_DELIM, test)) { | |
2544 | free_arg(farg); | |
2545 | free_token(token); | |
2546 | return EVENT_ERROR; | |
2547 | } | |
2548 | ||
2549 | *next_arg = farg; | |
2550 | next_arg = &(farg->next); | |
2551 | free_token(token); | |
2552 | } | |
2553 | ||
2554 | type = read_token(&token); | |
2555 | *tok = token; | |
2556 | ||
2557 | return type; | |
2558 | } | |
2559 | ||
2560 | static enum event_type | |
2561 | process_function(struct event_format *event, struct print_arg *arg, | |
2562 | char *token, char **tok) | |
2563 | { | |
2564 | struct pevent_function_handler *func; | |
2565 | ||
2566 | if (strcmp(token, "__print_flags") == 0) { | |
2567 | free_token(token); | |
5205aec9 | 2568 | is_flag_field = 1; |
f7d82350 SR |
2569 | return process_flags(event, arg, tok); |
2570 | } | |
2571 | if (strcmp(token, "__print_symbolic") == 0) { | |
2572 | free_token(token); | |
5205aec9 | 2573 | is_symbolic_field = 1; |
f7d82350 SR |
2574 | return process_symbols(event, arg, tok); |
2575 | } | |
e080e6f1 NK |
2576 | if (strcmp(token, "__print_hex") == 0) { |
2577 | free_token(token); | |
2578 | return process_hex(event, arg, tok); | |
2579 | } | |
f7d82350 SR |
2580 | if (strcmp(token, "__get_str") == 0) { |
2581 | free_token(token); | |
2582 | return process_str(event, arg, tok); | |
2583 | } | |
2584 | if (strcmp(token, "__get_dynamic_array") == 0) { | |
2585 | free_token(token); | |
2586 | return process_dynamic_array(event, arg, tok); | |
2587 | } | |
2588 | ||
2589 | func = find_func_handler(event->pevent, token); | |
2590 | if (func) { | |
2591 | free_token(token); | |
2592 | return process_func_handler(event, func, arg, tok); | |
2593 | } | |
2594 | ||
2595 | do_warning("function %s not defined", token); | |
2596 | free_token(token); | |
2597 | return EVENT_ERROR; | |
2598 | } | |
2599 | ||
2600 | static enum event_type | |
2601 | process_arg_token(struct event_format *event, struct print_arg *arg, | |
2602 | char **tok, enum event_type type) | |
2603 | { | |
2604 | char *token; | |
2605 | char *atom; | |
2606 | ||
2607 | token = *tok; | |
2608 | ||
2609 | switch (type) { | |
2610 | case EVENT_ITEM: | |
2611 | if (strcmp(token, "REC") == 0) { | |
2612 | free_token(token); | |
2613 | type = process_entry(event, arg, &token); | |
2614 | break; | |
2615 | } | |
2616 | atom = token; | |
2617 | /* test the next token */ | |
2618 | type = read_token_item(&token); | |
2619 | ||
2620 | /* | |
2621 | * If the next token is a parenthesis, then this | |
2622 | * is a function. | |
2623 | */ | |
2624 | if (type == EVENT_DELIM && strcmp(token, "(") == 0) { | |
2625 | free_token(token); | |
2626 | token = NULL; | |
2627 | /* this will free atom. */ | |
2628 | type = process_function(event, arg, atom, &token); | |
2629 | break; | |
2630 | } | |
2631 | /* atoms can be more than one token long */ | |
2632 | while (type == EVENT_ITEM) { | |
d286447f NK |
2633 | char *new_atom; |
2634 | new_atom = realloc(atom, | |
2635 | strlen(atom) + strlen(token) + 2); | |
2636 | if (!new_atom) { | |
2637 | free(atom); | |
2638 | *tok = NULL; | |
2639 | free_token(token); | |
2640 | return EVENT_ERROR; | |
2641 | } | |
2642 | atom = new_atom; | |
f7d82350 SR |
2643 | strcat(atom, " "); |
2644 | strcat(atom, token); | |
2645 | free_token(token); | |
2646 | type = read_token_item(&token); | |
2647 | } | |
2648 | ||
2649 | arg->type = PRINT_ATOM; | |
2650 | arg->atom.atom = atom; | |
2651 | break; | |
2652 | ||
2653 | case EVENT_DQUOTE: | |
2654 | case EVENT_SQUOTE: | |
2655 | arg->type = PRINT_ATOM; | |
2656 | arg->atom.atom = token; | |
2657 | type = read_token_item(&token); | |
2658 | break; | |
2659 | case EVENT_DELIM: | |
2660 | if (strcmp(token, "(") == 0) { | |
2661 | free_token(token); | |
2662 | type = process_paren(event, arg, &token); | |
2663 | break; | |
2664 | } | |
2665 | case EVENT_OP: | |
2666 | /* handle single ops */ | |
2667 | arg->type = PRINT_OP; | |
2668 | arg->op.op = token; | |
2669 | arg->op.left = NULL; | |
2670 | type = process_op(event, arg, &token); | |
2671 | ||
2672 | /* On error, the op is freed */ | |
2673 | if (type == EVENT_ERROR) | |
2674 | arg->op.op = NULL; | |
2675 | ||
2676 | /* return error type if errored */ | |
2677 | break; | |
2678 | ||
2679 | case EVENT_ERROR ... EVENT_NEWLINE: | |
2680 | default: | |
2681 | die("unexpected type %d", type); | |
2682 | } | |
2683 | *tok = token; | |
2684 | ||
2685 | return type; | |
2686 | } | |
2687 | ||
2688 | static int event_read_print_args(struct event_format *event, struct print_arg **list) | |
2689 | { | |
2690 | enum event_type type = EVENT_ERROR; | |
2691 | struct print_arg *arg; | |
2692 | char *token; | |
2693 | int args = 0; | |
2694 | ||
2695 | do { | |
2696 | if (type == EVENT_NEWLINE) { | |
2697 | type = read_token_item(&token); | |
2698 | continue; | |
2699 | } | |
2700 | ||
2701 | arg = alloc_arg(); | |
2702 | ||
2703 | type = process_arg(event, arg, &token); | |
2704 | ||
2705 | if (type == EVENT_ERROR) { | |
2706 | free_token(token); | |
2707 | free_arg(arg); | |
2708 | return -1; | |
2709 | } | |
2710 | ||
2711 | *list = arg; | |
2712 | args++; | |
2713 | ||
2714 | if (type == EVENT_OP) { | |
2715 | type = process_op(event, arg, &token); | |
2716 | free_token(token); | |
2717 | if (type == EVENT_ERROR) { | |
2718 | *list = NULL; | |
2719 | free_arg(arg); | |
2720 | return -1; | |
2721 | } | |
2722 | list = &arg->next; | |
2723 | continue; | |
2724 | } | |
2725 | ||
2726 | if (type == EVENT_DELIM && strcmp(token, ",") == 0) { | |
2727 | free_token(token); | |
2728 | *list = arg; | |
2729 | list = &arg->next; | |
2730 | continue; | |
2731 | } | |
2732 | break; | |
2733 | } while (type != EVENT_NONE); | |
2734 | ||
2735 | if (type != EVENT_NONE && type != EVENT_ERROR) | |
2736 | free_token(token); | |
2737 | ||
2738 | return args; | |
2739 | } | |
2740 | ||
2741 | static int event_read_print(struct event_format *event) | |
2742 | { | |
2743 | enum event_type type; | |
2744 | char *token; | |
2745 | int ret; | |
2746 | ||
2747 | if (read_expected_item(EVENT_ITEM, "print") < 0) | |
2748 | return -1; | |
2749 | ||
2750 | if (read_expected(EVENT_ITEM, "fmt") < 0) | |
2751 | return -1; | |
2752 | ||
2753 | if (read_expected(EVENT_OP, ":") < 0) | |
2754 | return -1; | |
2755 | ||
2756 | if (read_expect_type(EVENT_DQUOTE, &token) < 0) | |
2757 | goto fail; | |
2758 | ||
2759 | concat: | |
2760 | event->print_fmt.format = token; | |
2761 | event->print_fmt.args = NULL; | |
2762 | ||
2763 | /* ok to have no arg */ | |
2764 | type = read_token_item(&token); | |
2765 | ||
2766 | if (type == EVENT_NONE) | |
2767 | return 0; | |
2768 | ||
2769 | /* Handle concatenation of print lines */ | |
2770 | if (type == EVENT_DQUOTE) { | |
2771 | char *cat; | |
2772 | ||
2773 | cat = malloc_or_die(strlen(event->print_fmt.format) + | |
2774 | strlen(token) + 1); | |
2775 | strcpy(cat, event->print_fmt.format); | |
2776 | strcat(cat, token); | |
2777 | free_token(token); | |
2778 | free_token(event->print_fmt.format); | |
2779 | event->print_fmt.format = NULL; | |
2780 | token = cat; | |
2781 | goto concat; | |
2782 | } | |
2783 | ||
2784 | if (test_type_token(type, token, EVENT_DELIM, ",")) | |
2785 | goto fail; | |
2786 | ||
2787 | free_token(token); | |
2788 | ||
2789 | ret = event_read_print_args(event, &event->print_fmt.args); | |
2790 | if (ret < 0) | |
2791 | return -1; | |
2792 | ||
2793 | return ret; | |
2794 | ||
2795 | fail: | |
2796 | free_token(token); | |
2797 | return -1; | |
2798 | } | |
2799 | ||
2800 | /** | |
2801 | * pevent_find_common_field - return a common field by event | |
2802 | * @event: handle for the event | |
2803 | * @name: the name of the common field to return | |
2804 | * | |
2805 | * Returns a common field from the event by the given @name. | |
2806 | * This only searchs the common fields and not all field. | |
2807 | */ | |
2808 | struct format_field * | |
2809 | pevent_find_common_field(struct event_format *event, const char *name) | |
2810 | { | |
2811 | struct format_field *format; | |
2812 | ||
2813 | for (format = event->format.common_fields; | |
2814 | format; format = format->next) { | |
2815 | if (strcmp(format->name, name) == 0) | |
2816 | break; | |
2817 | } | |
2818 | ||
2819 | return format; | |
2820 | } | |
2821 | ||
2822 | /** | |
2823 | * pevent_find_field - find a non-common field | |
2824 | * @event: handle for the event | |
2825 | * @name: the name of the non-common field | |
2826 | * | |
2827 | * Returns a non-common field by the given @name. | |
2828 | * This does not search common fields. | |
2829 | */ | |
2830 | struct format_field * | |
2831 | pevent_find_field(struct event_format *event, const char *name) | |
2832 | { | |
2833 | struct format_field *format; | |
2834 | ||
2835 | for (format = event->format.fields; | |
2836 | format; format = format->next) { | |
2837 | if (strcmp(format->name, name) == 0) | |
2838 | break; | |
2839 | } | |
2840 | ||
2841 | return format; | |
2842 | } | |
2843 | ||
2844 | /** | |
2845 | * pevent_find_any_field - find any field by name | |
2846 | * @event: handle for the event | |
2847 | * @name: the name of the field | |
2848 | * | |
2849 | * Returns a field by the given @name. | |
2850 | * This searchs the common field names first, then | |
2851 | * the non-common ones if a common one was not found. | |
2852 | */ | |
2853 | struct format_field * | |
2854 | pevent_find_any_field(struct event_format *event, const char *name) | |
2855 | { | |
2856 | struct format_field *format; | |
2857 | ||
2858 | format = pevent_find_common_field(event, name); | |
2859 | if (format) | |
2860 | return format; | |
2861 | return pevent_find_field(event, name); | |
2862 | } | |
2863 | ||
2864 | /** | |
2865 | * pevent_read_number - read a number from data | |
2866 | * @pevent: handle for the pevent | |
2867 | * @ptr: the raw data | |
2868 | * @size: the size of the data that holds the number | |
2869 | * | |
2870 | * Returns the number (converted to host) from the | |
2871 | * raw data. | |
2872 | */ | |
2873 | unsigned long long pevent_read_number(struct pevent *pevent, | |
2874 | const void *ptr, int size) | |
2875 | { | |
2876 | switch (size) { | |
2877 | case 1: | |
2878 | return *(unsigned char *)ptr; | |
2879 | case 2: | |
2880 | return data2host2(pevent, ptr); | |
2881 | case 4: | |
2882 | return data2host4(pevent, ptr); | |
2883 | case 8: | |
2884 | return data2host8(pevent, ptr); | |
2885 | default: | |
2886 | /* BUG! */ | |
2887 | return 0; | |
2888 | } | |
2889 | } | |
2890 | ||
2891 | /** | |
2892 | * pevent_read_number_field - read a number from data | |
2893 | * @field: a handle to the field | |
2894 | * @data: the raw data to read | |
2895 | * @value: the value to place the number in | |
2896 | * | |
2897 | * Reads raw data according to a field offset and size, | |
2898 | * and translates it into @value. | |
2899 | * | |
2900 | * Returns 0 on success, -1 otherwise. | |
2901 | */ | |
2902 | int pevent_read_number_field(struct format_field *field, const void *data, | |
2903 | unsigned long long *value) | |
2904 | { | |
2905 | if (!field) | |
2906 | return -1; | |
2907 | switch (field->size) { | |
2908 | case 1: | |
2909 | case 2: | |
2910 | case 4: | |
2911 | case 8: | |
2912 | *value = pevent_read_number(field->event->pevent, | |
2913 | data + field->offset, field->size); | |
2914 | return 0; | |
2915 | default: | |
2916 | return -1; | |
2917 | } | |
2918 | } | |
2919 | ||
2920 | static int get_common_info(struct pevent *pevent, | |
2921 | const char *type, int *offset, int *size) | |
2922 | { | |
2923 | struct event_format *event; | |
2924 | struct format_field *field; | |
2925 | ||
2926 | /* | |
2927 | * All events should have the same common elements. | |
2928 | * Pick any event to find where the type is; | |
2929 | */ | |
2930 | if (!pevent->events) | |
2931 | die("no event_list!"); | |
2932 | ||
2933 | event = pevent->events[0]; | |
2934 | field = pevent_find_common_field(event, type); | |
2935 | if (!field) | |
0866a97e | 2936 | return -1; |
f7d82350 SR |
2937 | |
2938 | *offset = field->offset; | |
2939 | *size = field->size; | |
2940 | ||
2941 | return 0; | |
2942 | } | |
2943 | ||
2944 | static int __parse_common(struct pevent *pevent, void *data, | |
2945 | int *size, int *offset, const char *name) | |
2946 | { | |
2947 | int ret; | |
2948 | ||
2949 | if (!*size) { | |
2950 | ret = get_common_info(pevent, name, offset, size); | |
2951 | if (ret < 0) | |
2952 | return ret; | |
2953 | } | |
2954 | return pevent_read_number(pevent, data + *offset, *size); | |
2955 | } | |
2956 | ||
2957 | static int trace_parse_common_type(struct pevent *pevent, void *data) | |
2958 | { | |
2959 | return __parse_common(pevent, data, | |
2960 | &pevent->type_size, &pevent->type_offset, | |
2961 | "common_type"); | |
2962 | } | |
2963 | ||
2964 | static int parse_common_pid(struct pevent *pevent, void *data) | |
2965 | { | |
2966 | return __parse_common(pevent, data, | |
2967 | &pevent->pid_size, &pevent->pid_offset, | |
2968 | "common_pid"); | |
2969 | } | |
2970 | ||
2971 | static int parse_common_pc(struct pevent *pevent, void *data) | |
2972 | { | |
2973 | return __parse_common(pevent, data, | |
2974 | &pevent->pc_size, &pevent->pc_offset, | |
2975 | "common_preempt_count"); | |
2976 | } | |
2977 | ||
2978 | static int parse_common_flags(struct pevent *pevent, void *data) | |
2979 | { | |
2980 | return __parse_common(pevent, data, | |
2981 | &pevent->flags_size, &pevent->flags_offset, | |
2982 | "common_flags"); | |
2983 | } | |
2984 | ||
2985 | static int parse_common_lock_depth(struct pevent *pevent, void *data) | |
2986 | { | |
0866a97e SR |
2987 | return __parse_common(pevent, data, |
2988 | &pevent->ld_size, &pevent->ld_offset, | |
2989 | "common_lock_depth"); | |
2990 | } | |
f7d82350 | 2991 | |
0866a97e SR |
2992 | static int parse_common_migrate_disable(struct pevent *pevent, void *data) |
2993 | { | |
2994 | return __parse_common(pevent, data, | |
2995 | &pevent->ld_size, &pevent->ld_offset, | |
2996 | "common_migrate_disable"); | |
f7d82350 SR |
2997 | } |
2998 | ||
2999 | static int events_id_cmp(const void *a, const void *b); | |
3000 | ||
3001 | /** | |
3002 | * pevent_find_event - find an event by given id | |
3003 | * @pevent: a handle to the pevent | |
3004 | * @id: the id of the event | |
3005 | * | |
3006 | * Returns an event that has a given @id. | |
3007 | */ | |
3008 | struct event_format *pevent_find_event(struct pevent *pevent, int id) | |
3009 | { | |
3010 | struct event_format **eventptr; | |
3011 | struct event_format key; | |
3012 | struct event_format *pkey = &key; | |
3013 | ||
3014 | /* Check cache first */ | |
3015 | if (pevent->last_event && pevent->last_event->id == id) | |
3016 | return pevent->last_event; | |
3017 | ||
3018 | key.id = id; | |
3019 | ||
3020 | eventptr = bsearch(&pkey, pevent->events, pevent->nr_events, | |
3021 | sizeof(*pevent->events), events_id_cmp); | |
3022 | ||
3023 | if (eventptr) { | |
3024 | pevent->last_event = *eventptr; | |
3025 | return *eventptr; | |
3026 | } | |
3027 | ||
3028 | return NULL; | |
3029 | } | |
3030 | ||
3031 | /** | |
3032 | * pevent_find_event_by_name - find an event by given name | |
3033 | * @pevent: a handle to the pevent | |
3034 | * @sys: the system name to search for | |
3035 | * @name: the name of the event to search for | |
3036 | * | |
3037 | * This returns an event with a given @name and under the system | |
3038 | * @sys. If @sys is NULL the first event with @name is returned. | |
3039 | */ | |
3040 | struct event_format * | |
3041 | pevent_find_event_by_name(struct pevent *pevent, | |
3042 | const char *sys, const char *name) | |
3043 | { | |
3044 | struct event_format *event; | |
3045 | int i; | |
3046 | ||
3047 | if (pevent->last_event && | |
3048 | strcmp(pevent->last_event->name, name) == 0 && | |
3049 | (!sys || strcmp(pevent->last_event->system, sys) == 0)) | |
3050 | return pevent->last_event; | |
3051 | ||
3052 | for (i = 0; i < pevent->nr_events; i++) { | |
3053 | event = pevent->events[i]; | |
3054 | if (strcmp(event->name, name) == 0) { | |
3055 | if (!sys) | |
3056 | break; | |
3057 | if (strcmp(event->system, sys) == 0) | |
3058 | break; | |
3059 | } | |
3060 | } | |
3061 | if (i == pevent->nr_events) | |
3062 | event = NULL; | |
3063 | ||
3064 | pevent->last_event = event; | |
3065 | return event; | |
3066 | } | |
3067 | ||
3068 | static unsigned long long | |
3069 | eval_num_arg(void *data, int size, struct event_format *event, struct print_arg *arg) | |
3070 | { | |
3071 | struct pevent *pevent = event->pevent; | |
3072 | unsigned long long val = 0; | |
3073 | unsigned long long left, right; | |
3074 | struct print_arg *typearg = NULL; | |
3075 | struct print_arg *larg; | |
3076 | unsigned long offset; | |
3077 | unsigned int field_size; | |
3078 | ||
3079 | switch (arg->type) { | |
3080 | case PRINT_NULL: | |
3081 | /* ?? */ | |
3082 | return 0; | |
3083 | case PRINT_ATOM: | |
3084 | return strtoull(arg->atom.atom, NULL, 0); | |
3085 | case PRINT_FIELD: | |
3086 | if (!arg->field.field) { | |
3087 | arg->field.field = pevent_find_any_field(event, arg->field.name); | |
3088 | if (!arg->field.field) | |
3089 | die("field %s not found", arg->field.name); | |
3090 | } | |
3091 | /* must be a number */ | |
3092 | val = pevent_read_number(pevent, data + arg->field.field->offset, | |
3093 | arg->field.field->size); | |
3094 | break; | |
3095 | case PRINT_FLAGS: | |
3096 | case PRINT_SYMBOL: | |
e080e6f1 | 3097 | case PRINT_HEX: |
f7d82350 SR |
3098 | break; |
3099 | case PRINT_TYPE: | |
3100 | val = eval_num_arg(data, size, event, arg->typecast.item); | |
3101 | return eval_type(val, arg, 0); | |
3102 | case PRINT_STRING: | |
3103 | case PRINT_BSTRING: | |
3104 | return 0; | |
3105 | case PRINT_FUNC: { | |
3106 | struct trace_seq s; | |
3107 | trace_seq_init(&s); | |
3108 | val = process_defined_func(&s, data, size, event, arg); | |
3109 | trace_seq_destroy(&s); | |
3110 | return val; | |
3111 | } | |
3112 | case PRINT_OP: | |
3113 | if (strcmp(arg->op.op, "[") == 0) { | |
3114 | /* | |
3115 | * Arrays are special, since we don't want | |
3116 | * to read the arg as is. | |
3117 | */ | |
3118 | right = eval_num_arg(data, size, event, arg->op.right); | |
3119 | ||
3120 | /* handle typecasts */ | |
3121 | larg = arg->op.left; | |
3122 | while (larg->type == PRINT_TYPE) { | |
3123 | if (!typearg) | |
3124 | typearg = larg; | |
3125 | larg = larg->typecast.item; | |
3126 | } | |
3127 | ||
3128 | /* Default to long size */ | |
3129 | field_size = pevent->long_size; | |
3130 | ||
3131 | switch (larg->type) { | |
3132 | case PRINT_DYNAMIC_ARRAY: | |
3133 | offset = pevent_read_number(pevent, | |
3134 | data + larg->dynarray.field->offset, | |
3135 | larg->dynarray.field->size); | |
3136 | if (larg->dynarray.field->elementsize) | |
3137 | field_size = larg->dynarray.field->elementsize; | |
3138 | /* | |
3139 | * The actual length of the dynamic array is stored | |
3140 | * in the top half of the field, and the offset | |
3141 | * is in the bottom half of the 32 bit field. | |
3142 | */ | |
3143 | offset &= 0xffff; | |
3144 | offset += right; | |
3145 | break; | |
3146 | case PRINT_FIELD: | |
3147 | if (!larg->field.field) { | |
3148 | larg->field.field = | |
3149 | pevent_find_any_field(event, larg->field.name); | |
3150 | if (!larg->field.field) | |
3151 | die("field %s not found", larg->field.name); | |
3152 | } | |
3153 | field_size = larg->field.field->elementsize; | |
3154 | offset = larg->field.field->offset + | |
3155 | right * larg->field.field->elementsize; | |
3156 | break; | |
3157 | default: | |
3158 | goto default_op; /* oops, all bets off */ | |
3159 | } | |
3160 | val = pevent_read_number(pevent, | |
3161 | data + offset, field_size); | |
3162 | if (typearg) | |
3163 | val = eval_type(val, typearg, 1); | |
3164 | break; | |
3165 | } else if (strcmp(arg->op.op, "?") == 0) { | |
3166 | left = eval_num_arg(data, size, event, arg->op.left); | |
3167 | arg = arg->op.right; | |
3168 | if (left) | |
3169 | val = eval_num_arg(data, size, event, arg->op.left); | |
3170 | else | |
3171 | val = eval_num_arg(data, size, event, arg->op.right); | |
3172 | break; | |
3173 | } | |
3174 | default_op: | |
3175 | left = eval_num_arg(data, size, event, arg->op.left); | |
3176 | right = eval_num_arg(data, size, event, arg->op.right); | |
3177 | switch (arg->op.op[0]) { | |
3178 | case '!': | |
3179 | switch (arg->op.op[1]) { | |
3180 | case 0: | |
3181 | val = !right; | |
3182 | break; | |
3183 | case '=': | |
3184 | val = left != right; | |
3185 | break; | |
3186 | default: | |
3187 | die("unknown op '%s'", arg->op.op); | |
3188 | } | |
3189 | break; | |
3190 | case '~': | |
3191 | val = ~right; | |
3192 | break; | |
3193 | case '|': | |
3194 | if (arg->op.op[1]) | |
3195 | val = left || right; | |
3196 | else | |
3197 | val = left | right; | |
3198 | break; | |
3199 | case '&': | |
3200 | if (arg->op.op[1]) | |
3201 | val = left && right; | |
3202 | else | |
3203 | val = left & right; | |
3204 | break; | |
3205 | case '<': | |
3206 | switch (arg->op.op[1]) { | |
3207 | case 0: | |
3208 | val = left < right; | |
3209 | break; | |
3210 | case '<': | |
3211 | val = left << right; | |
3212 | break; | |
3213 | case '=': | |
3214 | val = left <= right; | |
3215 | break; | |
3216 | default: | |
3217 | die("unknown op '%s'", arg->op.op); | |
3218 | } | |
3219 | break; | |
3220 | case '>': | |
3221 | switch (arg->op.op[1]) { | |
3222 | case 0: | |
3223 | val = left > right; | |
3224 | break; | |
3225 | case '>': | |
3226 | val = left >> right; | |
3227 | break; | |
3228 | case '=': | |
3229 | val = left >= right; | |
3230 | break; | |
3231 | default: | |
3232 | die("unknown op '%s'", arg->op.op); | |
3233 | } | |
3234 | break; | |
3235 | case '=': | |
3236 | if (arg->op.op[1] != '=') | |
3237 | die("unknown op '%s'", arg->op.op); | |
3238 | val = left == right; | |
3239 | break; | |
3240 | case '-': | |
3241 | val = left - right; | |
3242 | break; | |
3243 | case '+': | |
3244 | val = left + right; | |
3245 | break; | |
2e7a5fc8 SR |
3246 | case '/': |
3247 | val = left / right; | |
3248 | break; | |
3249 | case '*': | |
3250 | val = left * right; | |
3251 | break; | |
f7d82350 SR |
3252 | default: |
3253 | die("unknown op '%s'", arg->op.op); | |
3254 | } | |
3255 | break; | |
3256 | default: /* not sure what to do there */ | |
3257 | return 0; | |
3258 | } | |
3259 | return val; | |
3260 | } | |
3261 | ||
3262 | struct flag { | |
3263 | const char *name; | |
3264 | unsigned long long value; | |
3265 | }; | |
3266 | ||
3267 | static const struct flag flags[] = { | |
3268 | { "HI_SOFTIRQ", 0 }, | |
3269 | { "TIMER_SOFTIRQ", 1 }, | |
3270 | { "NET_TX_SOFTIRQ", 2 }, | |
3271 | { "NET_RX_SOFTIRQ", 3 }, | |
3272 | { "BLOCK_SOFTIRQ", 4 }, | |
3273 | { "BLOCK_IOPOLL_SOFTIRQ", 5 }, | |
3274 | { "TASKLET_SOFTIRQ", 6 }, | |
3275 | { "SCHED_SOFTIRQ", 7 }, | |
3276 | { "HRTIMER_SOFTIRQ", 8 }, | |
3277 | { "RCU_SOFTIRQ", 9 }, | |
3278 | ||
3279 | { "HRTIMER_NORESTART", 0 }, | |
3280 | { "HRTIMER_RESTART", 1 }, | |
3281 | }; | |
3282 | ||
3283 | static unsigned long long eval_flag(const char *flag) | |
3284 | { | |
3285 | int i; | |
3286 | ||
3287 | /* | |
3288 | * Some flags in the format files do not get converted. | |
3289 | * If the flag is not numeric, see if it is something that | |
3290 | * we already know about. | |
3291 | */ | |
3292 | if (isdigit(flag[0])) | |
3293 | return strtoull(flag, NULL, 0); | |
3294 | ||
3295 | for (i = 0; i < (int)(sizeof(flags)/sizeof(flags[0])); i++) | |
3296 | if (strcmp(flags[i].name, flag) == 0) | |
3297 | return flags[i].value; | |
3298 | ||
3299 | return 0; | |
3300 | } | |
3301 | ||
3302 | static void print_str_to_seq(struct trace_seq *s, const char *format, | |
3303 | int len_arg, const char *str) | |
3304 | { | |
3305 | if (len_arg >= 0) | |
3306 | trace_seq_printf(s, format, len_arg, str); | |
3307 | else | |
3308 | trace_seq_printf(s, format, str); | |
3309 | } | |
3310 | ||
3311 | static void print_str_arg(struct trace_seq *s, void *data, int size, | |
3312 | struct event_format *event, const char *format, | |
3313 | int len_arg, struct print_arg *arg) | |
3314 | { | |
3315 | struct pevent *pevent = event->pevent; | |
3316 | struct print_flag_sym *flag; | |
b7008071 | 3317 | struct format_field *field; |
f7d82350 SR |
3318 | unsigned long long val, fval; |
3319 | unsigned long addr; | |
3320 | char *str; | |
e080e6f1 | 3321 | unsigned char *hex; |
f7d82350 | 3322 | int print; |
e080e6f1 | 3323 | int i, len; |
f7d82350 SR |
3324 | |
3325 | switch (arg->type) { | |
3326 | case PRINT_NULL: | |
3327 | /* ?? */ | |
3328 | return; | |
3329 | case PRINT_ATOM: | |
3330 | print_str_to_seq(s, format, len_arg, arg->atom.atom); | |
3331 | return; | |
3332 | case PRINT_FIELD: | |
b7008071 NK |
3333 | field = arg->field.field; |
3334 | if (!field) { | |
3335 | field = pevent_find_any_field(event, arg->field.name); | |
3336 | if (!field) | |
f7d82350 | 3337 | die("field %s not found", arg->field.name); |
b7008071 | 3338 | arg->field.field = field; |
f7d82350 SR |
3339 | } |
3340 | /* Zero sized fields, mean the rest of the data */ | |
b7008071 | 3341 | len = field->size ? : size - field->offset; |
f7d82350 SR |
3342 | |
3343 | /* | |
3344 | * Some events pass in pointers. If this is not an array | |
3345 | * and the size is the same as long_size, assume that it | |
3346 | * is a pointer. | |
3347 | */ | |
b7008071 NK |
3348 | if (!(field->flags & FIELD_IS_ARRAY) && |
3349 | field->size == pevent->long_size) { | |
3350 | addr = *(unsigned long *)(data + field->offset); | |
f7d82350 SR |
3351 | trace_seq_printf(s, "%lx", addr); |
3352 | break; | |
3353 | } | |
3354 | str = malloc_or_die(len + 1); | |
b7008071 | 3355 | memcpy(str, data + field->offset, len); |
f7d82350 SR |
3356 | str[len] = 0; |
3357 | print_str_to_seq(s, format, len_arg, str); | |
3358 | free(str); | |
3359 | break; | |
3360 | case PRINT_FLAGS: | |
3361 | val = eval_num_arg(data, size, event, arg->flags.field); | |
3362 | print = 0; | |
3363 | for (flag = arg->flags.flags; flag; flag = flag->next) { | |
3364 | fval = eval_flag(flag->value); | |
3365 | if (!val && !fval) { | |
3366 | print_str_to_seq(s, format, len_arg, flag->str); | |
3367 | break; | |
3368 | } | |
3369 | if (fval && (val & fval) == fval) { | |
3370 | if (print && arg->flags.delim) | |
3371 | trace_seq_puts(s, arg->flags.delim); | |
3372 | print_str_to_seq(s, format, len_arg, flag->str); | |
3373 | print = 1; | |
3374 | val &= ~fval; | |
3375 | } | |
3376 | } | |
3377 | break; | |
3378 | case PRINT_SYMBOL: | |
3379 | val = eval_num_arg(data, size, event, arg->symbol.field); | |
3380 | for (flag = arg->symbol.symbols; flag; flag = flag->next) { | |
3381 | fval = eval_flag(flag->value); | |
3382 | if (val == fval) { | |
3383 | print_str_to_seq(s, format, len_arg, flag->str); | |
3384 | break; | |
3385 | } | |
3386 | } | |
3387 | break; | |
e080e6f1 NK |
3388 | case PRINT_HEX: |
3389 | field = arg->hex.field->field.field; | |
3390 | if (!field) { | |
3391 | str = arg->hex.field->field.name; | |
3392 | field = pevent_find_any_field(event, str); | |
3393 | if (!field) | |
3394 | die("field %s not found", str); | |
3395 | arg->hex.field->field.field = field; | |
3396 | } | |
3397 | hex = data + field->offset; | |
3398 | len = eval_num_arg(data, size, event, arg->hex.size); | |
3399 | for (i = 0; i < len; i++) { | |
3400 | if (i) | |
3401 | trace_seq_putc(s, ' '); | |
3402 | trace_seq_printf(s, "%02x", hex[i]); | |
3403 | } | |
3404 | break; | |
f7d82350 SR |
3405 | |
3406 | case PRINT_TYPE: | |
3407 | break; | |
3408 | case PRINT_STRING: { | |
3409 | int str_offset; | |
3410 | ||
3411 | if (arg->string.offset == -1) { | |
3412 | struct format_field *f; | |
3413 | ||
3414 | f = pevent_find_any_field(event, arg->string.string); | |
3415 | arg->string.offset = f->offset; | |
3416 | } | |
3417 | str_offset = data2host4(pevent, data + arg->string.offset); | |
3418 | str_offset &= 0xffff; | |
3419 | print_str_to_seq(s, format, len_arg, ((char *)data) + str_offset); | |
3420 | break; | |
3421 | } | |
3422 | case PRINT_BSTRING: | |
c2e6dc2b | 3423 | print_str_to_seq(s, format, len_arg, arg->string.string); |
f7d82350 SR |
3424 | break; |
3425 | case PRINT_OP: | |
3426 | /* | |
3427 | * The only op for string should be ? : | |
3428 | */ | |
3429 | if (arg->op.op[0] != '?') | |
3430 | return; | |
3431 | val = eval_num_arg(data, size, event, arg->op.left); | |
3432 | if (val) | |
3433 | print_str_arg(s, data, size, event, | |
3434 | format, len_arg, arg->op.right->op.left); | |
3435 | else | |
3436 | print_str_arg(s, data, size, event, | |
3437 | format, len_arg, arg->op.right->op.right); | |
3438 | break; | |
3439 | case PRINT_FUNC: | |
3440 | process_defined_func(s, data, size, event, arg); | |
3441 | break; | |
3442 | default: | |
3443 | /* well... */ | |
3444 | break; | |
3445 | } | |
3446 | } | |
3447 | ||
3448 | static unsigned long long | |
3449 | process_defined_func(struct trace_seq *s, void *data, int size, | |
3450 | struct event_format *event, struct print_arg *arg) | |
3451 | { | |
3452 | struct pevent_function_handler *func_handle = arg->func.func; | |
3453 | struct pevent_func_params *param; | |
3454 | unsigned long long *args; | |
3455 | unsigned long long ret; | |
3456 | struct print_arg *farg; | |
3457 | struct trace_seq str; | |
3458 | struct save_str { | |
3459 | struct save_str *next; | |
3460 | char *str; | |
3461 | } *strings = NULL, *string; | |
3462 | int i; | |
3463 | ||
3464 | if (!func_handle->nr_args) { | |
3465 | ret = (*func_handle->func)(s, NULL); | |
3466 | goto out; | |
3467 | } | |
3468 | ||
3469 | farg = arg->func.args; | |
3470 | param = func_handle->params; | |
3471 | ||
3472 | args = malloc_or_die(sizeof(*args) * func_handle->nr_args); | |
3473 | for (i = 0; i < func_handle->nr_args; i++) { | |
3474 | switch (param->type) { | |
3475 | case PEVENT_FUNC_ARG_INT: | |
3476 | case PEVENT_FUNC_ARG_LONG: | |
3477 | case PEVENT_FUNC_ARG_PTR: | |
3478 | args[i] = eval_num_arg(data, size, event, farg); | |
3479 | break; | |
3480 | case PEVENT_FUNC_ARG_STRING: | |
3481 | trace_seq_init(&str); | |
3482 | print_str_arg(&str, data, size, event, "%s", -1, farg); | |
3483 | trace_seq_terminate(&str); | |
3484 | string = malloc_or_die(sizeof(*string)); | |
3485 | string->next = strings; | |
3486 | string->str = strdup(str.buffer); | |
ca63858e NK |
3487 | if (!string->str) |
3488 | die("malloc str"); | |
3489 | ||
0cf26013 | 3490 | args[i] = (uintptr_t)string->str; |
f7d82350 SR |
3491 | strings = string; |
3492 | trace_seq_destroy(&str); | |
3493 | break; | |
3494 | default: | |
3495 | /* | |
3496 | * Something went totally wrong, this is not | |
3497 | * an input error, something in this code broke. | |
3498 | */ | |
3499 | die("Unexpected end of arguments\n"); | |
3500 | break; | |
3501 | } | |
3502 | farg = farg->next; | |
21c69e72 | 3503 | param = param->next; |
f7d82350 SR |
3504 | } |
3505 | ||
3506 | ret = (*func_handle->func)(s, args); | |
3507 | free(args); | |
3508 | while (strings) { | |
3509 | string = strings; | |
3510 | strings = string->next; | |
3511 | free(string->str); | |
3512 | free(string); | |
3513 | } | |
3514 | ||
3515 | out: | |
3516 | /* TBD : handle return type here */ | |
3517 | return ret; | |
3518 | } | |
3519 | ||
3520 | static struct print_arg *make_bprint_args(char *fmt, void *data, int size, struct event_format *event) | |
3521 | { | |
3522 | struct pevent *pevent = event->pevent; | |
3523 | struct format_field *field, *ip_field; | |
3524 | struct print_arg *args, *arg, **next; | |
3525 | unsigned long long ip, val; | |
3526 | char *ptr; | |
3527 | void *bptr; | |
c2e6dc2b | 3528 | int vsize; |
f7d82350 SR |
3529 | |
3530 | field = pevent->bprint_buf_field; | |
3531 | ip_field = pevent->bprint_ip_field; | |
3532 | ||
3533 | if (!field) { | |
3534 | field = pevent_find_field(event, "buf"); | |
3535 | if (!field) | |
3536 | die("can't find buffer field for binary printk"); | |
3537 | ip_field = pevent_find_field(event, "ip"); | |
3538 | if (!ip_field) | |
3539 | die("can't find ip field for binary printk"); | |
3540 | pevent->bprint_buf_field = field; | |
3541 | pevent->bprint_ip_field = ip_field; | |
3542 | } | |
3543 | ||
3544 | ip = pevent_read_number(pevent, data + ip_field->offset, ip_field->size); | |
3545 | ||
3546 | /* | |
3547 | * The first arg is the IP pointer. | |
3548 | */ | |
3549 | args = alloc_arg(); | |
3550 | arg = args; | |
3551 | arg->next = NULL; | |
3552 | next = &arg->next; | |
3553 | ||
3554 | arg->type = PRINT_ATOM; | |
3555 | arg->atom.atom = malloc_or_die(32); | |
3556 | sprintf(arg->atom.atom, "%lld", ip); | |
3557 | ||
3558 | /* skip the first "%pf : " */ | |
3559 | for (ptr = fmt + 6, bptr = data + field->offset; | |
3560 | bptr < data + size && *ptr; ptr++) { | |
3561 | int ls = 0; | |
3562 | ||
3563 | if (*ptr == '%') { | |
3564 | process_again: | |
3565 | ptr++; | |
3566 | switch (*ptr) { | |
3567 | case '%': | |
3568 | break; | |
3569 | case 'l': | |
3570 | ls++; | |
3571 | goto process_again; | |
3572 | case 'L': | |
3573 | ls = 2; | |
3574 | goto process_again; | |
3575 | case '0' ... '9': | |
3576 | goto process_again; | |
c2e6dc2b SR |
3577 | case '.': |
3578 | goto process_again; | |
f7d82350 SR |
3579 | case 'p': |
3580 | ls = 1; | |
3581 | /* fall through */ | |
3582 | case 'd': | |
3583 | case 'u': | |
3584 | case 'x': | |
3585 | case 'i': | |
f7d82350 SR |
3586 | switch (ls) { |
3587 | case 0: | |
c2e6dc2b | 3588 | vsize = 4; |
f7d82350 SR |
3589 | break; |
3590 | case 1: | |
c2e6dc2b | 3591 | vsize = pevent->long_size; |
f7d82350 SR |
3592 | break; |
3593 | case 2: | |
c2e6dc2b | 3594 | vsize = 8; |
c9bbabe3 | 3595 | break; |
f7d82350 | 3596 | default: |
c2e6dc2b | 3597 | vsize = ls; /* ? */ |
f7d82350 SR |
3598 | break; |
3599 | } | |
c2e6dc2b SR |
3600 | /* fall through */ |
3601 | case '*': | |
3602 | if (*ptr == '*') | |
3603 | vsize = 4; | |
3604 | ||
3605 | /* the pointers are always 4 bytes aligned */ | |
3606 | bptr = (void *)(((unsigned long)bptr + 3) & | |
3607 | ~3); | |
3608 | val = pevent_read_number(pevent, bptr, vsize); | |
3609 | bptr += vsize; | |
f7d82350 SR |
3610 | arg = alloc_arg(); |
3611 | arg->next = NULL; | |
3612 | arg->type = PRINT_ATOM; | |
3613 | arg->atom.atom = malloc_or_die(32); | |
3614 | sprintf(arg->atom.atom, "%lld", val); | |
3615 | *next = arg; | |
3616 | next = &arg->next; | |
c2e6dc2b SR |
3617 | /* |
3618 | * The '*' case means that an arg is used as the length. | |
3619 | * We need to continue to figure out for what. | |
3620 | */ | |
3621 | if (*ptr == '*') | |
3622 | goto process_again; | |
3623 | ||
f7d82350 SR |
3624 | break; |
3625 | case 's': | |
3626 | arg = alloc_arg(); | |
3627 | arg->next = NULL; | |
3628 | arg->type = PRINT_BSTRING; | |
3629 | arg->string.string = strdup(bptr); | |
ca63858e NK |
3630 | if (!arg->string.string) |
3631 | break; | |
f7d82350 SR |
3632 | bptr += strlen(bptr) + 1; |
3633 | *next = arg; | |
3634 | next = &arg->next; | |
3635 | default: | |
3636 | break; | |
3637 | } | |
3638 | } | |
3639 | } | |
3640 | ||
3641 | return args; | |
3642 | } | |
3643 | ||
3644 | static void free_args(struct print_arg *args) | |
3645 | { | |
3646 | struct print_arg *next; | |
3647 | ||
3648 | while (args) { | |
3649 | next = args->next; | |
3650 | ||
3651 | free_arg(args); | |
3652 | args = next; | |
3653 | } | |
3654 | } | |
3655 | ||
3656 | static char * | |
1d037ca1 IT |
3657 | get_bprint_format(void *data, int size __maybe_unused, |
3658 | struct event_format *event) | |
f7d82350 SR |
3659 | { |
3660 | struct pevent *pevent = event->pevent; | |
3661 | unsigned long long addr; | |
3662 | struct format_field *field; | |
3663 | struct printk_map *printk; | |
3664 | char *format; | |
3665 | char *p; | |
3666 | ||
3667 | field = pevent->bprint_fmt_field; | |
3668 | ||
3669 | if (!field) { | |
3670 | field = pevent_find_field(event, "fmt"); | |
3671 | if (!field) | |
3672 | die("can't find format field for binary printk"); | |
3673 | pevent->bprint_fmt_field = field; | |
3674 | } | |
3675 | ||
3676 | addr = pevent_read_number(pevent, data + field->offset, field->size); | |
3677 | ||
3678 | printk = find_printk(pevent, addr); | |
3679 | if (!printk) { | |
3680 | format = malloc_or_die(45); | |
3681 | sprintf(format, "%%pf : (NO FORMAT FOUND at %llx)\n", | |
3682 | addr); | |
3683 | return format; | |
3684 | } | |
3685 | ||
3686 | p = printk->printk; | |
3687 | /* Remove any quotes. */ | |
3688 | if (*p == '"') | |
3689 | p++; | |
3690 | format = malloc_or_die(strlen(p) + 10); | |
3691 | sprintf(format, "%s : %s", "%pf", p); | |
3692 | /* remove ending quotes and new line since we will add one too */ | |
3693 | p = format + strlen(format) - 1; | |
3694 | if (*p == '"') | |
3695 | *p = 0; | |
3696 | ||
3697 | p -= 2; | |
3698 | if (strcmp(p, "\\n") == 0) | |
3699 | *p = 0; | |
3700 | ||
3701 | return format; | |
3702 | } | |
3703 | ||
3704 | static void print_mac_arg(struct trace_seq *s, int mac, void *data, int size, | |
3705 | struct event_format *event, struct print_arg *arg) | |
3706 | { | |
3707 | unsigned char *buf; | |
3708 | char *fmt = "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x"; | |
3709 | ||
3710 | if (arg->type == PRINT_FUNC) { | |
3711 | process_defined_func(s, data, size, event, arg); | |
3712 | return; | |
3713 | } | |
3714 | ||
3715 | if (arg->type != PRINT_FIELD) { | |
3716 | trace_seq_printf(s, "ARG TYPE NOT FIELD BUT %d", | |
3717 | arg->type); | |
3718 | return; | |
3719 | } | |
3720 | ||
3721 | if (mac == 'm') | |
3722 | fmt = "%.2x%.2x%.2x%.2x%.2x%.2x"; | |
3723 | if (!arg->field.field) { | |
3724 | arg->field.field = | |
3725 | pevent_find_any_field(event, arg->field.name); | |
3726 | if (!arg->field.field) | |
3727 | die("field %s not found", arg->field.name); | |
3728 | } | |
3729 | if (arg->field.field->size != 6) { | |
3730 | trace_seq_printf(s, "INVALIDMAC"); | |
3731 | return; | |
3732 | } | |
3733 | buf = data + arg->field.field->offset; | |
3734 | trace_seq_printf(s, fmt, buf[0], buf[1], buf[2], buf[3], buf[4], buf[5]); | |
3735 | } | |
3736 | ||
600da3cf NK |
3737 | static int is_printable_array(char *p, unsigned int len) |
3738 | { | |
3739 | unsigned int i; | |
3740 | ||
3741 | for (i = 0; i < len && p[i]; i++) | |
3742 | if (!isprint(p[i])) | |
3743 | return 0; | |
3744 | return 1; | |
3745 | } | |
3746 | ||
f7d82350 SR |
3747 | static void print_event_fields(struct trace_seq *s, void *data, int size, |
3748 | struct event_format *event) | |
3749 | { | |
3750 | struct format_field *field; | |
3751 | unsigned long long val; | |
3752 | unsigned int offset, len, i; | |
3753 | ||
3754 | field = event->format.fields; | |
3755 | while (field) { | |
3756 | trace_seq_printf(s, " %s=", field->name); | |
3757 | if (field->flags & FIELD_IS_ARRAY) { | |
3758 | offset = field->offset; | |
3759 | len = field->size; | |
3760 | if (field->flags & FIELD_IS_DYNAMIC) { | |
3761 | val = pevent_read_number(event->pevent, data + offset, len); | |
3762 | offset = val; | |
3763 | len = offset >> 16; | |
3764 | offset &= 0xffff; | |
3765 | } | |
600da3cf NK |
3766 | if (field->flags & FIELD_IS_STRING && |
3767 | is_printable_array(data + offset, len)) { | |
f7d82350 SR |
3768 | trace_seq_printf(s, "%s", (char *)data + offset); |
3769 | } else { | |
3770 | trace_seq_puts(s, "ARRAY["); | |
3771 | for (i = 0; i < len; i++) { | |
3772 | if (i) | |
3773 | trace_seq_puts(s, ", "); | |
3774 | trace_seq_printf(s, "%02x", | |
3775 | *((unsigned char *)data + offset + i)); | |
3776 | } | |
3777 | trace_seq_putc(s, ']'); | |
600da3cf | 3778 | field->flags &= ~FIELD_IS_STRING; |
f7d82350 SR |
3779 | } |
3780 | } else { | |
3781 | val = pevent_read_number(event->pevent, data + field->offset, | |
3782 | field->size); | |
3783 | if (field->flags & FIELD_IS_POINTER) { | |
3784 | trace_seq_printf(s, "0x%llx", val); | |
3785 | } else if (field->flags & FIELD_IS_SIGNED) { | |
3786 | switch (field->size) { | |
3787 | case 4: | |
3788 | /* | |
3789 | * If field is long then print it in hex. | |
3790 | * A long usually stores pointers. | |
3791 | */ | |
3792 | if (field->flags & FIELD_IS_LONG) | |
3793 | trace_seq_printf(s, "0x%x", (int)val); | |
3794 | else | |
3795 | trace_seq_printf(s, "%d", (int)val); | |
3796 | break; | |
3797 | case 2: | |
3798 | trace_seq_printf(s, "%2d", (short)val); | |
3799 | break; | |
3800 | case 1: | |
3801 | trace_seq_printf(s, "%1d", (char)val); | |
3802 | break; | |
3803 | default: | |
3804 | trace_seq_printf(s, "%lld", val); | |
3805 | } | |
3806 | } else { | |
3807 | if (field->flags & FIELD_IS_LONG) | |
3808 | trace_seq_printf(s, "0x%llx", val); | |
3809 | else | |
3810 | trace_seq_printf(s, "%llu", val); | |
3811 | } | |
3812 | } | |
3813 | field = field->next; | |
3814 | } | |
3815 | } | |
3816 | ||
3817 | static void pretty_print(struct trace_seq *s, void *data, int size, struct event_format *event) | |
3818 | { | |
3819 | struct pevent *pevent = event->pevent; | |
3820 | struct print_fmt *print_fmt = &event->print_fmt; | |
3821 | struct print_arg *arg = print_fmt->args; | |
3822 | struct print_arg *args = NULL; | |
3823 | const char *ptr = print_fmt->format; | |
3824 | unsigned long long val; | |
3825 | struct func_map *func; | |
3826 | const char *saveptr; | |
3827 | char *bprint_fmt = NULL; | |
3828 | char format[32]; | |
3829 | int show_func; | |
3830 | int len_as_arg; | |
3831 | int len_arg; | |
3832 | int len; | |
3833 | int ls; | |
3834 | ||
3835 | if (event->flags & EVENT_FL_FAILED) { | |
3836 | trace_seq_printf(s, "[FAILED TO PARSE]"); | |
3837 | print_event_fields(s, data, size, event); | |
3838 | return; | |
3839 | } | |
3840 | ||
3841 | if (event->flags & EVENT_FL_ISBPRINT) { | |
3842 | bprint_fmt = get_bprint_format(data, size, event); | |
3843 | args = make_bprint_args(bprint_fmt, data, size, event); | |
3844 | arg = args; | |
3845 | ptr = bprint_fmt; | |
3846 | } | |
3847 | ||
3848 | for (; *ptr; ptr++) { | |
3849 | ls = 0; | |
3850 | if (*ptr == '\\') { | |
3851 | ptr++; | |
3852 | switch (*ptr) { | |
3853 | case 'n': | |
3854 | trace_seq_putc(s, '\n'); | |
3855 | break; | |
3856 | case 't': | |
3857 | trace_seq_putc(s, '\t'); | |
3858 | break; | |
3859 | case 'r': | |
3860 | trace_seq_putc(s, '\r'); | |
3861 | break; | |
3862 | case '\\': | |
3863 | trace_seq_putc(s, '\\'); | |
3864 | break; | |
3865 | default: | |
3866 | trace_seq_putc(s, *ptr); | |
3867 | break; | |
3868 | } | |
3869 | ||
3870 | } else if (*ptr == '%') { | |
3871 | saveptr = ptr; | |
3872 | show_func = 0; | |
3873 | len_as_arg = 0; | |
3874 | cont_process: | |
3875 | ptr++; | |
3876 | switch (*ptr) { | |
3877 | case '%': | |
3878 | trace_seq_putc(s, '%'); | |
3879 | break; | |
3880 | case '#': | |
3881 | /* FIXME: need to handle properly */ | |
3882 | goto cont_process; | |
3883 | case 'h': | |
3884 | ls--; | |
3885 | goto cont_process; | |
3886 | case 'l': | |
3887 | ls++; | |
3888 | goto cont_process; | |
3889 | case 'L': | |
3890 | ls = 2; | |
3891 | goto cont_process; | |
3892 | case '*': | |
3893 | /* The argument is the length. */ | |
245c5a18 NK |
3894 | if (!arg) { |
3895 | do_warning("no argument match"); | |
3896 | event->flags |= EVENT_FL_FAILED; | |
3897 | goto out_failed; | |
3898 | } | |
f7d82350 SR |
3899 | len_arg = eval_num_arg(data, size, event, arg); |
3900 | len_as_arg = 1; | |
3901 | arg = arg->next; | |
3902 | goto cont_process; | |
3903 | case '.': | |
3904 | case 'z': | |
3905 | case 'Z': | |
3906 | case '0' ... '9': | |
3907 | goto cont_process; | |
3908 | case 'p': | |
3909 | if (pevent->long_size == 4) | |
3910 | ls = 1; | |
3911 | else | |
3912 | ls = 2; | |
3913 | ||
3914 | if (*(ptr+1) == 'F' || | |
3915 | *(ptr+1) == 'f') { | |
3916 | ptr++; | |
3917 | show_func = *ptr; | |
3918 | } else if (*(ptr+1) == 'M' || *(ptr+1) == 'm') { | |
3919 | print_mac_arg(s, *(ptr+1), data, size, event, arg); | |
3920 | ptr++; | |
aaf05c72 | 3921 | arg = arg->next; |
f7d82350 SR |
3922 | break; |
3923 | } | |
3924 | ||
3925 | /* fall through */ | |
3926 | case 'd': | |
3927 | case 'i': | |
3928 | case 'x': | |
3929 | case 'X': | |
3930 | case 'u': | |
245c5a18 NK |
3931 | if (!arg) { |
3932 | do_warning("no argument match"); | |
3933 | event->flags |= EVENT_FL_FAILED; | |
3934 | goto out_failed; | |
3935 | } | |
f7d82350 SR |
3936 | |
3937 | len = ((unsigned long)ptr + 1) - | |
3938 | (unsigned long)saveptr; | |
3939 | ||
3940 | /* should never happen */ | |
245c5a18 NK |
3941 | if (len > 31) { |
3942 | do_warning("bad format!"); | |
3943 | event->flags |= EVENT_FL_FAILED; | |
3944 | len = 31; | |
3945 | } | |
f7d82350 SR |
3946 | |
3947 | memcpy(format, saveptr, len); | |
3948 | format[len] = 0; | |
3949 | ||
3950 | val = eval_num_arg(data, size, event, arg); | |
3951 | arg = arg->next; | |
3952 | ||
3953 | if (show_func) { | |
3954 | func = find_func(pevent, val); | |
3955 | if (func) { | |
3956 | trace_seq_puts(s, func->func); | |
3957 | if (show_func == 'F') | |
3958 | trace_seq_printf(s, | |
3959 | "+0x%llx", | |
3960 | val - func->addr); | |
3961 | break; | |
3962 | } | |
3963 | } | |
c5b35b73 WM |
3964 | if (pevent->long_size == 8 && ls && |
3965 | sizeof(long) != 8) { | |
f7d82350 SR |
3966 | char *p; |
3967 | ||
3968 | ls = 2; | |
3969 | /* make %l into %ll */ | |
3970 | p = strchr(format, 'l'); | |
3971 | if (p) | |
c5b35b73 | 3972 | memmove(p+1, p, strlen(p)+1); |
f7d82350 SR |
3973 | else if (strcmp(format, "%p") == 0) |
3974 | strcpy(format, "0x%llx"); | |
3975 | } | |
3976 | switch (ls) { | |
3977 | case -2: | |
3978 | if (len_as_arg) | |
3979 | trace_seq_printf(s, format, len_arg, (char)val); | |
3980 | else | |
3981 | trace_seq_printf(s, format, (char)val); | |
3982 | break; | |
3983 | case -1: | |
3984 | if (len_as_arg) | |
3985 | trace_seq_printf(s, format, len_arg, (short)val); | |
3986 | else | |
3987 | trace_seq_printf(s, format, (short)val); | |
3988 | break; | |
3989 | case 0: | |
3990 | if (len_as_arg) | |
3991 | trace_seq_printf(s, format, len_arg, (int)val); | |
3992 | else | |
3993 | trace_seq_printf(s, format, (int)val); | |
3994 | break; | |
3995 | case 1: | |
3996 | if (len_as_arg) | |
3997 | trace_seq_printf(s, format, len_arg, (long)val); | |
3998 | else | |
3999 | trace_seq_printf(s, format, (long)val); | |
4000 | break; | |
4001 | case 2: | |
4002 | if (len_as_arg) | |
4003 | trace_seq_printf(s, format, len_arg, | |
4004 | (long long)val); | |
4005 | else | |
4006 | trace_seq_printf(s, format, (long long)val); | |
4007 | break; | |
4008 | default: | |
245c5a18 NK |
4009 | do_warning("bad count (%d)", ls); |
4010 | event->flags |= EVENT_FL_FAILED; | |
f7d82350 SR |
4011 | } |
4012 | break; | |
4013 | case 's': | |
245c5a18 NK |
4014 | if (!arg) { |
4015 | do_warning("no matching argument"); | |
4016 | event->flags |= EVENT_FL_FAILED; | |
4017 | goto out_failed; | |
4018 | } | |
f7d82350 SR |
4019 | |
4020 | len = ((unsigned long)ptr + 1) - | |
4021 | (unsigned long)saveptr; | |
4022 | ||
4023 | /* should never happen */ | |
245c5a18 NK |
4024 | if (len > 31) { |
4025 | do_warning("bad format!"); | |
4026 | event->flags |= EVENT_FL_FAILED; | |
4027 | len = 31; | |
4028 | } | |
f7d82350 SR |
4029 | |
4030 | memcpy(format, saveptr, len); | |
4031 | format[len] = 0; | |
4032 | if (!len_as_arg) | |
4033 | len_arg = -1; | |
4034 | print_str_arg(s, data, size, event, | |
4035 | format, len_arg, arg); | |
4036 | arg = arg->next; | |
4037 | break; | |
4038 | default: | |
4039 | trace_seq_printf(s, ">%c<", *ptr); | |
4040 | ||
4041 | } | |
4042 | } else | |
4043 | trace_seq_putc(s, *ptr); | |
4044 | } | |
4045 | ||
245c5a18 NK |
4046 | if (event->flags & EVENT_FL_FAILED) { |
4047 | out_failed: | |
4048 | trace_seq_printf(s, "[FAILED TO PARSE]"); | |
4049 | } | |
4050 | ||
f7d82350 SR |
4051 | if (args) { |
4052 | free_args(args); | |
4053 | free(bprint_fmt); | |
4054 | } | |
4055 | } | |
4056 | ||
4057 | /** | |
4058 | * pevent_data_lat_fmt - parse the data for the latency format | |
4059 | * @pevent: a handle to the pevent | |
4060 | * @s: the trace_seq to write to | |
16e6b8fd | 4061 | * @record: the record to read from |
f7d82350 SR |
4062 | * |
4063 | * This parses out the Latency format (interrupts disabled, | |
4064 | * need rescheduling, in hard/soft interrupt, preempt count | |
4065 | * and lock depth) and places it into the trace_seq. | |
4066 | */ | |
4067 | void pevent_data_lat_fmt(struct pevent *pevent, | |
1c698186 | 4068 | struct trace_seq *s, struct pevent_record *record) |
f7d82350 SR |
4069 | { |
4070 | static int check_lock_depth = 1; | |
0866a97e | 4071 | static int check_migrate_disable = 1; |
f7d82350 | 4072 | static int lock_depth_exists; |
0866a97e | 4073 | static int migrate_disable_exists; |
f7d82350 SR |
4074 | unsigned int lat_flags; |
4075 | unsigned int pc; | |
4076 | int lock_depth; | |
0866a97e | 4077 | int migrate_disable; |
f7d82350 SR |
4078 | int hardirq; |
4079 | int softirq; | |
4080 | void *data = record->data; | |
4081 | ||
4082 | lat_flags = parse_common_flags(pevent, data); | |
4083 | pc = parse_common_pc(pevent, data); | |
4084 | /* lock_depth may not always exist */ | |
f7d82350 SR |
4085 | if (lock_depth_exists) |
4086 | lock_depth = parse_common_lock_depth(pevent, data); | |
0866a97e SR |
4087 | else if (check_lock_depth) { |
4088 | lock_depth = parse_common_lock_depth(pevent, data); | |
4089 | if (lock_depth < 0) | |
4090 | check_lock_depth = 0; | |
4091 | else | |
4092 | lock_depth_exists = 1; | |
4093 | } | |
4094 | ||
4095 | /* migrate_disable may not always exist */ | |
4096 | if (migrate_disable_exists) | |
4097 | migrate_disable = parse_common_migrate_disable(pevent, data); | |
4098 | else if (check_migrate_disable) { | |
4099 | migrate_disable = parse_common_migrate_disable(pevent, data); | |
4100 | if (migrate_disable < 0) | |
4101 | check_migrate_disable = 0; | |
4102 | else | |
4103 | migrate_disable_exists = 1; | |
4104 | } | |
f7d82350 SR |
4105 | |
4106 | hardirq = lat_flags & TRACE_FLAG_HARDIRQ; | |
4107 | softirq = lat_flags & TRACE_FLAG_SOFTIRQ; | |
4108 | ||
4109 | trace_seq_printf(s, "%c%c%c", | |
4110 | (lat_flags & TRACE_FLAG_IRQS_OFF) ? 'd' : | |
4111 | (lat_flags & TRACE_FLAG_IRQS_NOSUPPORT) ? | |
4112 | 'X' : '.', | |
4113 | (lat_flags & TRACE_FLAG_NEED_RESCHED) ? | |
4114 | 'N' : '.', | |
4115 | (hardirq && softirq) ? 'H' : | |
4116 | hardirq ? 'h' : softirq ? 's' : '.'); | |
4117 | ||
4118 | if (pc) | |
4119 | trace_seq_printf(s, "%x", pc); | |
4120 | else | |
4121 | trace_seq_putc(s, '.'); | |
4122 | ||
0866a97e SR |
4123 | if (migrate_disable_exists) { |
4124 | if (migrate_disable < 0) | |
4125 | trace_seq_putc(s, '.'); | |
4126 | else | |
4127 | trace_seq_printf(s, "%d", migrate_disable); | |
4128 | } | |
4129 | ||
f7d82350 SR |
4130 | if (lock_depth_exists) { |
4131 | if (lock_depth < 0) | |
4132 | trace_seq_putc(s, '.'); | |
4133 | else | |
4134 | trace_seq_printf(s, "%d", lock_depth); | |
4135 | } | |
4136 | ||
4137 | trace_seq_terminate(s); | |
4138 | } | |
4139 | ||
4140 | /** | |
4141 | * pevent_data_type - parse out the given event type | |
4142 | * @pevent: a handle to the pevent | |
4143 | * @rec: the record to read from | |
4144 | * | |
4145 | * This returns the event id from the @rec. | |
4146 | */ | |
1c698186 | 4147 | int pevent_data_type(struct pevent *pevent, struct pevent_record *rec) |
f7d82350 SR |
4148 | { |
4149 | return trace_parse_common_type(pevent, rec->data); | |
4150 | } | |
4151 | ||
4152 | /** | |
4153 | * pevent_data_event_from_type - find the event by a given type | |
4154 | * @pevent: a handle to the pevent | |
4155 | * @type: the type of the event. | |
4156 | * | |
4157 | * This returns the event form a given @type; | |
4158 | */ | |
4159 | struct event_format *pevent_data_event_from_type(struct pevent *pevent, int type) | |
4160 | { | |
4161 | return pevent_find_event(pevent, type); | |
4162 | } | |
4163 | ||
4164 | /** | |
4165 | * pevent_data_pid - parse the PID from raw data | |
4166 | * @pevent: a handle to the pevent | |
4167 | * @rec: the record to parse | |
4168 | * | |
4169 | * This returns the PID from a raw data. | |
4170 | */ | |
1c698186 | 4171 | int pevent_data_pid(struct pevent *pevent, struct pevent_record *rec) |
f7d82350 SR |
4172 | { |
4173 | return parse_common_pid(pevent, rec->data); | |
4174 | } | |
4175 | ||
4176 | /** | |
4177 | * pevent_data_comm_from_pid - return the command line from PID | |
4178 | * @pevent: a handle to the pevent | |
4179 | * @pid: the PID of the task to search for | |
4180 | * | |
4181 | * This returns a pointer to the command line that has the given | |
4182 | * @pid. | |
4183 | */ | |
4184 | const char *pevent_data_comm_from_pid(struct pevent *pevent, int pid) | |
4185 | { | |
4186 | const char *comm; | |
4187 | ||
4188 | comm = find_cmdline(pevent, pid); | |
4189 | return comm; | |
4190 | } | |
4191 | ||
4192 | /** | |
4193 | * pevent_data_comm_from_pid - parse the data into the print format | |
4194 | * @s: the trace_seq to write to | |
4195 | * @event: the handle to the event | |
16e6b8fd | 4196 | * @record: the record to read from |
f7d82350 SR |
4197 | * |
4198 | * This parses the raw @data using the given @event information and | |
4199 | * writes the print format into the trace_seq. | |
4200 | */ | |
4201 | void pevent_event_info(struct trace_seq *s, struct event_format *event, | |
1c698186 | 4202 | struct pevent_record *record) |
f7d82350 SR |
4203 | { |
4204 | int print_pretty = 1; | |
4205 | ||
4206 | if (event->pevent->print_raw) | |
4207 | print_event_fields(s, record->data, record->size, event); | |
4208 | else { | |
4209 | ||
4210 | if (event->handler) | |
4211 | print_pretty = event->handler(s, record, event, | |
4212 | event->context); | |
4213 | ||
4214 | if (print_pretty) | |
4215 | pretty_print(s, record->data, record->size, event); | |
4216 | } | |
4217 | ||
4218 | trace_seq_terminate(s); | |
4219 | } | |
4220 | ||
4221 | void pevent_print_event(struct pevent *pevent, struct trace_seq *s, | |
1c698186 | 4222 | struct pevent_record *record) |
f7d82350 SR |
4223 | { |
4224 | static char *spaces = " "; /* 20 spaces */ | |
4225 | struct event_format *event; | |
4226 | unsigned long secs; | |
4227 | unsigned long usecs; | |
4dc1024a | 4228 | unsigned long nsecs; |
f7d82350 SR |
4229 | const char *comm; |
4230 | void *data = record->data; | |
4231 | int type; | |
4232 | int pid; | |
4233 | int len; | |
4dc1024a | 4234 | int p; |
f7d82350 SR |
4235 | |
4236 | secs = record->ts / NSECS_PER_SEC; | |
4dc1024a | 4237 | nsecs = record->ts - secs * NSECS_PER_SEC; |
f7d82350 SR |
4238 | |
4239 | if (record->size < 0) { | |
4240 | do_warning("ug! negative record size %d", record->size); | |
4241 | return; | |
4242 | } | |
4243 | ||
4244 | type = trace_parse_common_type(pevent, data); | |
4245 | ||
4246 | event = pevent_find_event(pevent, type); | |
4247 | if (!event) { | |
4248 | do_warning("ug! no event found for type %d", type); | |
4249 | return; | |
4250 | } | |
4251 | ||
4252 | pid = parse_common_pid(pevent, data); | |
4253 | comm = find_cmdline(pevent, pid); | |
4254 | ||
4255 | if (pevent->latency_format) { | |
4256 | trace_seq_printf(s, "%8.8s-%-5d %3d", | |
4257 | comm, pid, record->cpu); | |
4258 | pevent_data_lat_fmt(pevent, s, record); | |
4259 | } else | |
4260 | trace_seq_printf(s, "%16s-%-5d [%03d]", comm, pid, record->cpu); | |
4261 | ||
4dc1024a SR |
4262 | if (pevent->flags & PEVENT_NSEC_OUTPUT) { |
4263 | usecs = nsecs; | |
4264 | p = 9; | |
4265 | } else { | |
4266 | usecs = (nsecs + 500) / NSECS_PER_USEC; | |
4267 | p = 6; | |
4268 | } | |
4269 | ||
4270 | trace_seq_printf(s, " %5lu.%0*lu: %s: ", secs, p, usecs, event->name); | |
f7d82350 SR |
4271 | |
4272 | /* Space out the event names evenly. */ | |
4273 | len = strlen(event->name); | |
4274 | if (len < 20) | |
4275 | trace_seq_printf(s, "%.*s", 20 - len, spaces); | |
4276 | ||
4277 | pevent_event_info(s, event, record); | |
4278 | } | |
4279 | ||
4280 | static int events_id_cmp(const void *a, const void *b) | |
4281 | { | |
4282 | struct event_format * const * ea = a; | |
4283 | struct event_format * const * eb = b; | |
4284 | ||
4285 | if ((*ea)->id < (*eb)->id) | |
4286 | return -1; | |
4287 | ||
4288 | if ((*ea)->id > (*eb)->id) | |
4289 | return 1; | |
4290 | ||
4291 | return 0; | |
4292 | } | |
4293 | ||
4294 | static int events_name_cmp(const void *a, const void *b) | |
4295 | { | |
4296 | struct event_format * const * ea = a; | |
4297 | struct event_format * const * eb = b; | |
4298 | int res; | |
4299 | ||
4300 | res = strcmp((*ea)->name, (*eb)->name); | |
4301 | if (res) | |
4302 | return res; | |
4303 | ||
4304 | res = strcmp((*ea)->system, (*eb)->system); | |
4305 | if (res) | |
4306 | return res; | |
4307 | ||
4308 | return events_id_cmp(a, b); | |
4309 | } | |
4310 | ||
4311 | static int events_system_cmp(const void *a, const void *b) | |
4312 | { | |
4313 | struct event_format * const * ea = a; | |
4314 | struct event_format * const * eb = b; | |
4315 | int res; | |
4316 | ||
4317 | res = strcmp((*ea)->system, (*eb)->system); | |
4318 | if (res) | |
4319 | return res; | |
4320 | ||
4321 | res = strcmp((*ea)->name, (*eb)->name); | |
4322 | if (res) | |
4323 | return res; | |
4324 | ||
4325 | return events_id_cmp(a, b); | |
4326 | } | |
4327 | ||
4328 | struct event_format **pevent_list_events(struct pevent *pevent, enum event_sort_type sort_type) | |
4329 | { | |
4330 | struct event_format **events; | |
4331 | int (*sort)(const void *a, const void *b); | |
4332 | ||
4333 | events = pevent->sort_events; | |
4334 | ||
4335 | if (events && pevent->last_type == sort_type) | |
4336 | return events; | |
4337 | ||
4338 | if (!events) { | |
4339 | events = malloc(sizeof(*events) * (pevent->nr_events + 1)); | |
4340 | if (!events) | |
4341 | return NULL; | |
4342 | ||
4343 | memcpy(events, pevent->events, sizeof(*events) * pevent->nr_events); | |
4344 | events[pevent->nr_events] = NULL; | |
4345 | ||
4346 | pevent->sort_events = events; | |
4347 | ||
4348 | /* the internal events are sorted by id */ | |
4349 | if (sort_type == EVENT_SORT_ID) { | |
4350 | pevent->last_type = sort_type; | |
4351 | return events; | |
4352 | } | |
4353 | } | |
4354 | ||
4355 | switch (sort_type) { | |
4356 | case EVENT_SORT_ID: | |
4357 | sort = events_id_cmp; | |
4358 | break; | |
4359 | case EVENT_SORT_NAME: | |
4360 | sort = events_name_cmp; | |
4361 | break; | |
4362 | case EVENT_SORT_SYSTEM: | |
4363 | sort = events_system_cmp; | |
4364 | break; | |
4365 | default: | |
4366 | return events; | |
4367 | } | |
4368 | ||
4369 | qsort(events, pevent->nr_events, sizeof(*events), sort); | |
4370 | pevent->last_type = sort_type; | |
4371 | ||
4372 | return events; | |
4373 | } | |
4374 | ||
4375 | static struct format_field ** | |
4376 | get_event_fields(const char *type, const char *name, | |
4377 | int count, struct format_field *list) | |
4378 | { | |
4379 | struct format_field **fields; | |
4380 | struct format_field *field; | |
4381 | int i = 0; | |
4382 | ||
4383 | fields = malloc_or_die(sizeof(*fields) * (count + 1)); | |
4384 | for (field = list; field; field = field->next) { | |
4385 | fields[i++] = field; | |
4386 | if (i == count + 1) { | |
4387 | do_warning("event %s has more %s fields than specified", | |
4388 | name, type); | |
4389 | i--; | |
4390 | break; | |
4391 | } | |
4392 | } | |
4393 | ||
4394 | if (i != count) | |
4395 | do_warning("event %s has less %s fields than specified", | |
4396 | name, type); | |
4397 | ||
4398 | fields[i] = NULL; | |
4399 | ||
4400 | return fields; | |
4401 | } | |
4402 | ||
4403 | /** | |
4404 | * pevent_event_common_fields - return a list of common fields for an event | |
4405 | * @event: the event to return the common fields of. | |
4406 | * | |
4407 | * Returns an allocated array of fields. The last item in the array is NULL. | |
4408 | * The array must be freed with free(). | |
4409 | */ | |
4410 | struct format_field **pevent_event_common_fields(struct event_format *event) | |
4411 | { | |
4412 | return get_event_fields("common", event->name, | |
4413 | event->format.nr_common, | |
4414 | event->format.common_fields); | |
4415 | } | |
4416 | ||
4417 | /** | |
4418 | * pevent_event_fields - return a list of event specific fields for an event | |
4419 | * @event: the event to return the fields of. | |
4420 | * | |
4421 | * Returns an allocated array of fields. The last item in the array is NULL. | |
4422 | * The array must be freed with free(). | |
4423 | */ | |
4424 | struct format_field **pevent_event_fields(struct event_format *event) | |
4425 | { | |
4426 | return get_event_fields("event", event->name, | |
4427 | event->format.nr_fields, | |
4428 | event->format.fields); | |
4429 | } | |
4430 | ||
4431 | static void print_fields(struct trace_seq *s, struct print_flag_sym *field) | |
4432 | { | |
4433 | trace_seq_printf(s, "{ %s, %s }", field->value, field->str); | |
4434 | if (field->next) { | |
4435 | trace_seq_puts(s, ", "); | |
4436 | print_fields(s, field->next); | |
4437 | } | |
4438 | } | |
4439 | ||
4440 | /* for debugging */ | |
4441 | static void print_args(struct print_arg *args) | |
4442 | { | |
4443 | int print_paren = 1; | |
4444 | struct trace_seq s; | |
4445 | ||
4446 | switch (args->type) { | |
4447 | case PRINT_NULL: | |
4448 | printf("null"); | |
4449 | break; | |
4450 | case PRINT_ATOM: | |
4451 | printf("%s", args->atom.atom); | |
4452 | break; | |
4453 | case PRINT_FIELD: | |
4454 | printf("REC->%s", args->field.name); | |
4455 | break; | |
4456 | case PRINT_FLAGS: | |
4457 | printf("__print_flags("); | |
4458 | print_args(args->flags.field); | |
4459 | printf(", %s, ", args->flags.delim); | |
4460 | trace_seq_init(&s); | |
4461 | print_fields(&s, args->flags.flags); | |
4462 | trace_seq_do_printf(&s); | |
4463 | trace_seq_destroy(&s); | |
4464 | printf(")"); | |
4465 | break; | |
4466 | case PRINT_SYMBOL: | |
4467 | printf("__print_symbolic("); | |
4468 | print_args(args->symbol.field); | |
4469 | printf(", "); | |
4470 | trace_seq_init(&s); | |
4471 | print_fields(&s, args->symbol.symbols); | |
4472 | trace_seq_do_printf(&s); | |
4473 | trace_seq_destroy(&s); | |
4474 | printf(")"); | |
4475 | break; | |
e080e6f1 NK |
4476 | case PRINT_HEX: |
4477 | printf("__print_hex("); | |
4478 | print_args(args->hex.field); | |
4479 | printf(", "); | |
4480 | print_args(args->hex.size); | |
4481 | printf(")"); | |
4482 | break; | |
f7d82350 SR |
4483 | case PRINT_STRING: |
4484 | case PRINT_BSTRING: | |
4485 | printf("__get_str(%s)", args->string.string); | |
4486 | break; | |
4487 | case PRINT_TYPE: | |
4488 | printf("(%s)", args->typecast.type); | |
4489 | print_args(args->typecast.item); | |
4490 | break; | |
4491 | case PRINT_OP: | |
4492 | if (strcmp(args->op.op, ":") == 0) | |
4493 | print_paren = 0; | |
4494 | if (print_paren) | |
4495 | printf("("); | |
4496 | print_args(args->op.left); | |
4497 | printf(" %s ", args->op.op); | |
4498 | print_args(args->op.right); | |
4499 | if (print_paren) | |
4500 | printf(")"); | |
4501 | break; | |
4502 | default: | |
4503 | /* we should warn... */ | |
4504 | return; | |
4505 | } | |
4506 | if (args->next) { | |
4507 | printf("\n"); | |
4508 | print_args(args->next); | |
4509 | } | |
4510 | } | |
4511 | ||
4512 | static void parse_header_field(const char *field, | |
4513 | int *offset, int *size, int mandatory) | |
4514 | { | |
4515 | unsigned long long save_input_buf_ptr; | |
4516 | unsigned long long save_input_buf_siz; | |
4517 | char *token; | |
4518 | int type; | |
4519 | ||
4520 | save_input_buf_ptr = input_buf_ptr; | |
4521 | save_input_buf_siz = input_buf_siz; | |
4522 | ||
4523 | if (read_expected(EVENT_ITEM, "field") < 0) | |
4524 | return; | |
4525 | if (read_expected(EVENT_OP, ":") < 0) | |
4526 | return; | |
4527 | ||
4528 | /* type */ | |
4529 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
4530 | goto fail; | |
4531 | free_token(token); | |
4532 | ||
4533 | /* | |
4534 | * If this is not a mandatory field, then test it first. | |
4535 | */ | |
4536 | if (mandatory) { | |
4537 | if (read_expected(EVENT_ITEM, field) < 0) | |
4538 | return; | |
4539 | } else { | |
4540 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
4541 | goto fail; | |
4542 | if (strcmp(token, field) != 0) | |
4543 | goto discard; | |
4544 | free_token(token); | |
4545 | } | |
4546 | ||
4547 | if (read_expected(EVENT_OP, ";") < 0) | |
4548 | return; | |
4549 | if (read_expected(EVENT_ITEM, "offset") < 0) | |
4550 | return; | |
4551 | if (read_expected(EVENT_OP, ":") < 0) | |
4552 | return; | |
4553 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
4554 | goto fail; | |
4555 | *offset = atoi(token); | |
4556 | free_token(token); | |
4557 | if (read_expected(EVENT_OP, ";") < 0) | |
4558 | return; | |
4559 | if (read_expected(EVENT_ITEM, "size") < 0) | |
4560 | return; | |
4561 | if (read_expected(EVENT_OP, ":") < 0) | |
4562 | return; | |
4563 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
4564 | goto fail; | |
4565 | *size = atoi(token); | |
4566 | free_token(token); | |
4567 | if (read_expected(EVENT_OP, ";") < 0) | |
4568 | return; | |
4569 | type = read_token(&token); | |
4570 | if (type != EVENT_NEWLINE) { | |
4571 | /* newer versions of the kernel have a "signed" type */ | |
4572 | if (type != EVENT_ITEM) | |
4573 | goto fail; | |
4574 | ||
4575 | if (strcmp(token, "signed") != 0) | |
4576 | goto fail; | |
4577 | ||
4578 | free_token(token); | |
4579 | ||
4580 | if (read_expected(EVENT_OP, ":") < 0) | |
4581 | return; | |
4582 | ||
4583 | if (read_expect_type(EVENT_ITEM, &token)) | |
4584 | goto fail; | |
4585 | ||
4586 | free_token(token); | |
4587 | if (read_expected(EVENT_OP, ";") < 0) | |
4588 | return; | |
4589 | ||
4590 | if (read_expect_type(EVENT_NEWLINE, &token)) | |
4591 | goto fail; | |
4592 | } | |
4593 | fail: | |
4594 | free_token(token); | |
4595 | return; | |
4596 | ||
4597 | discard: | |
4598 | input_buf_ptr = save_input_buf_ptr; | |
4599 | input_buf_siz = save_input_buf_siz; | |
4600 | *offset = 0; | |
4601 | *size = 0; | |
4602 | free_token(token); | |
4603 | } | |
4604 | ||
4605 | /** | |
4606 | * pevent_parse_header_page - parse the data stored in the header page | |
4607 | * @pevent: the handle to the pevent | |
4608 | * @buf: the buffer storing the header page format string | |
4609 | * @size: the size of @buf | |
4610 | * @long_size: the long size to use if there is no header | |
4611 | * | |
4612 | * This parses the header page format for information on the | |
4613 | * ring buffer used. The @buf should be copied from | |
4614 | * | |
4615 | * /sys/kernel/debug/tracing/events/header_page | |
4616 | */ | |
4617 | int pevent_parse_header_page(struct pevent *pevent, char *buf, unsigned long size, | |
4618 | int long_size) | |
4619 | { | |
4620 | int ignore; | |
4621 | ||
4622 | if (!size) { | |
4623 | /* | |
4624 | * Old kernels did not have header page info. | |
4625 | * Sorry but we just use what we find here in user space. | |
4626 | */ | |
4627 | pevent->header_page_ts_size = sizeof(long long); | |
4628 | pevent->header_page_size_size = long_size; | |
4629 | pevent->header_page_data_offset = sizeof(long long) + long_size; | |
4630 | pevent->old_format = 1; | |
4631 | return -1; | |
4632 | } | |
4633 | init_input_buf(buf, size); | |
4634 | ||
4635 | parse_header_field("timestamp", &pevent->header_page_ts_offset, | |
4636 | &pevent->header_page_ts_size, 1); | |
4637 | parse_header_field("commit", &pevent->header_page_size_offset, | |
4638 | &pevent->header_page_size_size, 1); | |
4639 | parse_header_field("overwrite", &pevent->header_page_overwrite, | |
4640 | &ignore, 0); | |
4641 | parse_header_field("data", &pevent->header_page_data_offset, | |
4642 | &pevent->header_page_data_size, 1); | |
4643 | ||
4644 | return 0; | |
4645 | } | |
4646 | ||
4647 | static int event_matches(struct event_format *event, | |
4648 | int id, const char *sys_name, | |
4649 | const char *event_name) | |
4650 | { | |
4651 | if (id >= 0 && id != event->id) | |
4652 | return 0; | |
4653 | ||
4654 | if (event_name && (strcmp(event_name, event->name) != 0)) | |
4655 | return 0; | |
4656 | ||
4657 | if (sys_name && (strcmp(sys_name, event->system) != 0)) | |
4658 | return 0; | |
4659 | ||
4660 | return 1; | |
4661 | } | |
4662 | ||
4663 | static void free_handler(struct event_handler *handle) | |
4664 | { | |
4665 | free((void *)handle->sys_name); | |
4666 | free((void *)handle->event_name); | |
4667 | free(handle); | |
4668 | } | |
4669 | ||
4670 | static int find_event_handle(struct pevent *pevent, struct event_format *event) | |
4671 | { | |
4672 | struct event_handler *handle, **next; | |
4673 | ||
4674 | for (next = &pevent->handlers; *next; | |
4675 | next = &(*next)->next) { | |
4676 | handle = *next; | |
4677 | if (event_matches(event, handle->id, | |
4678 | handle->sys_name, | |
4679 | handle->event_name)) | |
4680 | break; | |
4681 | } | |
4682 | ||
4683 | if (!(*next)) | |
4684 | return 0; | |
4685 | ||
4686 | pr_stat("overriding event (%d) %s:%s with new print handler", | |
4687 | event->id, event->system, event->name); | |
4688 | ||
4689 | event->handler = handle->func; | |
4690 | event->context = handle->context; | |
4691 | ||
4692 | *next = handle->next; | |
4693 | free_handler(handle); | |
4694 | ||
4695 | return 1; | |
4696 | } | |
4697 | ||
4698 | /** | |
4699 | * pevent_parse_event - parse the event format | |
4700 | * @pevent: the handle to the pevent | |
4701 | * @buf: the buffer storing the event format string | |
4702 | * @size: the size of @buf | |
4703 | * @sys: the system the event belongs to | |
4704 | * | |
4705 | * This parses the event format and creates an event structure | |
4706 | * to quickly parse raw data for a given event. | |
4707 | * | |
4708 | * These files currently come from: | |
4709 | * | |
4710 | * /sys/kernel/debug/tracing/events/.../.../format | |
4711 | */ | |
bffddffd NK |
4712 | enum pevent_errno pevent_parse_event(struct pevent *pevent, const char *buf, |
4713 | unsigned long size, const char *sys) | |
f7d82350 SR |
4714 | { |
4715 | struct event_format *event; | |
4716 | int ret; | |
4717 | ||
4718 | init_input_buf(buf, size); | |
4719 | ||
4720 | event = alloc_event(); | |
4721 | if (!event) | |
bffddffd | 4722 | return PEVENT_ERRNO__MEM_ALLOC_FAILED; |
f7d82350 SR |
4723 | |
4724 | event->name = event_read_name(); | |
4725 | if (!event->name) { | |
4726 | /* Bad event? */ | |
bffddffd NK |
4727 | ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; |
4728 | goto event_alloc_failed; | |
f7d82350 SR |
4729 | } |
4730 | ||
4731 | if (strcmp(sys, "ftrace") == 0) { | |
f7d82350 SR |
4732 | event->flags |= EVENT_FL_ISFTRACE; |
4733 | ||
4734 | if (strcmp(event->name, "bprint") == 0) | |
4735 | event->flags |= EVENT_FL_ISBPRINT; | |
4736 | } | |
4737 | ||
4738 | event->id = event_read_id(); | |
bffddffd NK |
4739 | if (event->id < 0) { |
4740 | ret = PEVENT_ERRNO__READ_ID_FAILED; | |
4741 | /* | |
4742 | * This isn't an allocation error actually. | |
4743 | * But as the ID is critical, just bail out. | |
4744 | */ | |
4745 | goto event_alloc_failed; | |
4746 | } | |
f7d82350 SR |
4747 | |
4748 | event->system = strdup(sys); | |
bffddffd NK |
4749 | if (!event->system) { |
4750 | ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
4751 | goto event_alloc_failed; | |
4752 | } | |
f7d82350 SR |
4753 | |
4754 | /* Add pevent to event so that it can be referenced */ | |
4755 | event->pevent = pevent; | |
4756 | ||
4757 | ret = event_read_format(event); | |
4758 | if (ret < 0) { | |
bffddffd NK |
4759 | ret = PEVENT_ERRNO__READ_FORMAT_FAILED; |
4760 | goto event_parse_failed; | |
f7d82350 SR |
4761 | } |
4762 | ||
4763 | /* | |
4764 | * If the event has an override, don't print warnings if the event | |
4765 | * print format fails to parse. | |
4766 | */ | |
4767 | if (find_event_handle(pevent, event)) | |
4768 | show_warning = 0; | |
4769 | ||
4770 | ret = event_read_print(event); | |
4771 | if (ret < 0) { | |
f7d82350 | 4772 | show_warning = 1; |
bffddffd NK |
4773 | ret = PEVENT_ERRNO__READ_PRINT_FAILED; |
4774 | goto event_parse_failed; | |
f7d82350 SR |
4775 | } |
4776 | show_warning = 1; | |
4777 | ||
4778 | add_event(pevent, event); | |
4779 | ||
4780 | if (!ret && (event->flags & EVENT_FL_ISFTRACE)) { | |
4781 | struct format_field *field; | |
4782 | struct print_arg *arg, **list; | |
4783 | ||
4784 | /* old ftrace had no args */ | |
f7d82350 SR |
4785 | list = &event->print_fmt.args; |
4786 | for (field = event->format.fields; field; field = field->next) { | |
4787 | arg = alloc_arg(); | |
f7d82350 SR |
4788 | arg->type = PRINT_FIELD; |
4789 | arg->field.name = strdup(field->name); | |
ca63858e | 4790 | if (!arg->field.name) { |
4b5632bc | 4791 | event->flags |= EVENT_FL_FAILED; |
fd34f0b2 | 4792 | free_arg(arg); |
bffddffd | 4793 | return PEVENT_ERRNO__OLD_FTRACE_ARG_FAILED; |
ca63858e | 4794 | } |
f7d82350 | 4795 | arg->field.field = field; |
fd34f0b2 NK |
4796 | *list = arg; |
4797 | list = &arg->next; | |
f7d82350 SR |
4798 | } |
4799 | return 0; | |
4800 | } | |
4801 | ||
4802 | #define PRINT_ARGS 0 | |
4803 | if (PRINT_ARGS && event->print_fmt.args) | |
4804 | print_args(event->print_fmt.args); | |
4805 | ||
4806 | return 0; | |
4807 | ||
bffddffd | 4808 | event_parse_failed: |
f7d82350 SR |
4809 | event->flags |= EVENT_FL_FAILED; |
4810 | /* still add it even if it failed */ | |
4811 | add_event(pevent, event); | |
bffddffd NK |
4812 | return ret; |
4813 | ||
4814 | event_alloc_failed: | |
4815 | free(event->system); | |
4816 | free(event->name); | |
4817 | free(event); | |
4818 | return ret; | |
f7d82350 SR |
4819 | } |
4820 | ||
2f197b9d NK |
4821 | #undef _PE |
4822 | #define _PE(code, str) str | |
4823 | static const char * const pevent_error_str[] = { | |
4824 | PEVENT_ERRORS | |
4825 | }; | |
4826 | #undef _PE | |
4827 | ||
4828 | int pevent_strerror(struct pevent *pevent, enum pevent_errno errnum, | |
4829 | char *buf, size_t buflen) | |
4830 | { | |
4831 | int idx; | |
4832 | const char *msg; | |
4833 | ||
4834 | if (errnum >= 0) { | |
e1aa7c30 NK |
4835 | msg = strerror_r(errnum, buf, buflen); |
4836 | if (msg != buf) { | |
4837 | size_t len = strlen(msg); | |
9612ef67 IT |
4838 | memcpy(buf, msg, min(buflen - 1, len)); |
4839 | *(buf + min(buflen - 1, len)) = '\0'; | |
e1aa7c30 | 4840 | } |
2f197b9d NK |
4841 | return 0; |
4842 | } | |
4843 | ||
4844 | if (errnum <= __PEVENT_ERRNO__START || | |
4845 | errnum >= __PEVENT_ERRNO__END) | |
4846 | return -1; | |
4847 | ||
f63fe79f | 4848 | idx = errnum - __PEVENT_ERRNO__START - 1; |
2f197b9d NK |
4849 | msg = pevent_error_str[idx]; |
4850 | ||
4851 | switch (errnum) { | |
4852 | case PEVENT_ERRNO__MEM_ALLOC_FAILED: | |
4853 | case PEVENT_ERRNO__PARSE_EVENT_FAILED: | |
4854 | case PEVENT_ERRNO__READ_ID_FAILED: | |
4855 | case PEVENT_ERRNO__READ_FORMAT_FAILED: | |
4856 | case PEVENT_ERRNO__READ_PRINT_FAILED: | |
4857 | case PEVENT_ERRNO__OLD_FTRACE_ARG_FAILED: | |
4858 | snprintf(buf, buflen, "%s", msg); | |
4859 | break; | |
4860 | ||
4861 | default: | |
4862 | /* cannot reach here */ | |
4863 | break; | |
4864 | } | |
4865 | ||
4866 | return 0; | |
4867 | } | |
4868 | ||
f7d82350 | 4869 | int get_field_val(struct trace_seq *s, struct format_field *field, |
1c698186 | 4870 | const char *name, struct pevent_record *record, |
f7d82350 SR |
4871 | unsigned long long *val, int err) |
4872 | { | |
4873 | if (!field) { | |
4874 | if (err) | |
4875 | trace_seq_printf(s, "<CANT FIND FIELD %s>", name); | |
4876 | return -1; | |
4877 | } | |
4878 | ||
4879 | if (pevent_read_number_field(field, record->data, val)) { | |
4880 | if (err) | |
4881 | trace_seq_printf(s, " %s=INVALID", name); | |
4882 | return -1; | |
4883 | } | |
4884 | ||
4885 | return 0; | |
4886 | } | |
4887 | ||
4888 | /** | |
4889 | * pevent_get_field_raw - return the raw pointer into the data field | |
4890 | * @s: The seq to print to on error | |
4891 | * @event: the event that the field is for | |
4892 | * @name: The name of the field | |
4893 | * @record: The record with the field name. | |
4894 | * @len: place to store the field length. | |
4895 | * @err: print default error if failed. | |
4896 | * | |
4897 | * Returns a pointer into record->data of the field and places | |
4898 | * the length of the field in @len. | |
4899 | * | |
4900 | * On failure, it returns NULL. | |
4901 | */ | |
4902 | void *pevent_get_field_raw(struct trace_seq *s, struct event_format *event, | |
1c698186 | 4903 | const char *name, struct pevent_record *record, |
f7d82350 SR |
4904 | int *len, int err) |
4905 | { | |
4906 | struct format_field *field; | |
4907 | void *data = record->data; | |
4908 | unsigned offset; | |
4909 | int dummy; | |
4910 | ||
4911 | if (!event) | |
4912 | return NULL; | |
4913 | ||
4914 | field = pevent_find_field(event, name); | |
4915 | ||
4916 | if (!field) { | |
4917 | if (err) | |
4918 | trace_seq_printf(s, "<CANT FIND FIELD %s>", name); | |
4919 | return NULL; | |
4920 | } | |
4921 | ||
4922 | /* Allow @len to be NULL */ | |
4923 | if (!len) | |
4924 | len = &dummy; | |
4925 | ||
4926 | offset = field->offset; | |
4927 | if (field->flags & FIELD_IS_DYNAMIC) { | |
4928 | offset = pevent_read_number(event->pevent, | |
4929 | data + offset, field->size); | |
4930 | *len = offset >> 16; | |
4931 | offset &= 0xffff; | |
4932 | } else | |
4933 | *len = field->size; | |
4934 | ||
4935 | return data + offset; | |
4936 | } | |
4937 | ||
4938 | /** | |
4939 | * pevent_get_field_val - find a field and return its value | |
4940 | * @s: The seq to print to on error | |
4941 | * @event: the event that the field is for | |
4942 | * @name: The name of the field | |
4943 | * @record: The record with the field name. | |
4944 | * @val: place to store the value of the field. | |
4945 | * @err: print default error if failed. | |
4946 | * | |
4947 | * Returns 0 on success -1 on field not found. | |
4948 | */ | |
4949 | int pevent_get_field_val(struct trace_seq *s, struct event_format *event, | |
1c698186 | 4950 | const char *name, struct pevent_record *record, |
f7d82350 SR |
4951 | unsigned long long *val, int err) |
4952 | { | |
4953 | struct format_field *field; | |
4954 | ||
4955 | if (!event) | |
4956 | return -1; | |
4957 | ||
4958 | field = pevent_find_field(event, name); | |
4959 | ||
4960 | return get_field_val(s, field, name, record, val, err); | |
4961 | } | |
4962 | ||
4963 | /** | |
4964 | * pevent_get_common_field_val - find a common field and return its value | |
4965 | * @s: The seq to print to on error | |
4966 | * @event: the event that the field is for | |
4967 | * @name: The name of the field | |
4968 | * @record: The record with the field name. | |
4969 | * @val: place to store the value of the field. | |
4970 | * @err: print default error if failed. | |
4971 | * | |
4972 | * Returns 0 on success -1 on field not found. | |
4973 | */ | |
4974 | int pevent_get_common_field_val(struct trace_seq *s, struct event_format *event, | |
1c698186 | 4975 | const char *name, struct pevent_record *record, |
f7d82350 SR |
4976 | unsigned long long *val, int err) |
4977 | { | |
4978 | struct format_field *field; | |
4979 | ||
4980 | if (!event) | |
4981 | return -1; | |
4982 | ||
4983 | field = pevent_find_common_field(event, name); | |
4984 | ||
4985 | return get_field_val(s, field, name, record, val, err); | |
4986 | } | |
4987 | ||
4988 | /** | |
4989 | * pevent_get_any_field_val - find a any field and return its value | |
4990 | * @s: The seq to print to on error | |
4991 | * @event: the event that the field is for | |
4992 | * @name: The name of the field | |
4993 | * @record: The record with the field name. | |
4994 | * @val: place to store the value of the field. | |
4995 | * @err: print default error if failed. | |
4996 | * | |
4997 | * Returns 0 on success -1 on field not found. | |
4998 | */ | |
4999 | int pevent_get_any_field_val(struct trace_seq *s, struct event_format *event, | |
1c698186 | 5000 | const char *name, struct pevent_record *record, |
f7d82350 SR |
5001 | unsigned long long *val, int err) |
5002 | { | |
5003 | struct format_field *field; | |
5004 | ||
5005 | if (!event) | |
5006 | return -1; | |
5007 | ||
5008 | field = pevent_find_any_field(event, name); | |
5009 | ||
5010 | return get_field_val(s, field, name, record, val, err); | |
5011 | } | |
5012 | ||
5013 | /** | |
5014 | * pevent_print_num_field - print a field and a format | |
5015 | * @s: The seq to print to | |
5016 | * @fmt: The printf format to print the field with. | |
5017 | * @event: the event that the field is for | |
5018 | * @name: The name of the field | |
5019 | * @record: The record with the field name. | |
5020 | * @err: print default error if failed. | |
5021 | * | |
16e6b8fd | 5022 | * Returns: 0 on success, -1 field not found, or 1 if buffer is full. |
f7d82350 SR |
5023 | */ |
5024 | int pevent_print_num_field(struct trace_seq *s, const char *fmt, | |
5025 | struct event_format *event, const char *name, | |
1c698186 | 5026 | struct pevent_record *record, int err) |
f7d82350 SR |
5027 | { |
5028 | struct format_field *field = pevent_find_field(event, name); | |
5029 | unsigned long long val; | |
5030 | ||
5031 | if (!field) | |
5032 | goto failed; | |
5033 | ||
5034 | if (pevent_read_number_field(field, record->data, &val)) | |
5035 | goto failed; | |
5036 | ||
5037 | return trace_seq_printf(s, fmt, val); | |
5038 | ||
5039 | failed: | |
5040 | if (err) | |
5041 | trace_seq_printf(s, "CAN'T FIND FIELD \"%s\"", name); | |
5042 | return -1; | |
5043 | } | |
5044 | ||
5045 | static void free_func_handle(struct pevent_function_handler *func) | |
5046 | { | |
5047 | struct pevent_func_params *params; | |
5048 | ||
5049 | free(func->name); | |
5050 | ||
5051 | while (func->params) { | |
5052 | params = func->params; | |
5053 | func->params = params->next; | |
5054 | free(params); | |
5055 | } | |
5056 | ||
5057 | free(func); | |
5058 | } | |
5059 | ||
5060 | /** | |
5061 | * pevent_register_print_function - register a helper function | |
5062 | * @pevent: the handle to the pevent | |
5063 | * @func: the function to process the helper function | |
16e6b8fd | 5064 | * @ret_type: the return type of the helper function |
f7d82350 SR |
5065 | * @name: the name of the helper function |
5066 | * @parameters: A list of enum pevent_func_arg_type | |
5067 | * | |
5068 | * Some events may have helper functions in the print format arguments. | |
16e6b8fd | 5069 | * This allows a plugin to dynamically create a way to process one |
f7d82350 SR |
5070 | * of these functions. |
5071 | * | |
5072 | * The @parameters is a variable list of pevent_func_arg_type enums that | |
5073 | * must end with PEVENT_FUNC_ARG_VOID. | |
5074 | */ | |
5075 | int pevent_register_print_function(struct pevent *pevent, | |
5076 | pevent_func_handler func, | |
5077 | enum pevent_func_arg_type ret_type, | |
5078 | char *name, ...) | |
5079 | { | |
5080 | struct pevent_function_handler *func_handle; | |
5081 | struct pevent_func_params **next_param; | |
5082 | struct pevent_func_params *param; | |
5083 | enum pevent_func_arg_type type; | |
5084 | va_list ap; | |
67ed939c | 5085 | int ret; |
f7d82350 SR |
5086 | |
5087 | func_handle = find_func_handler(pevent, name); | |
5088 | if (func_handle) { | |
5089 | /* | |
5090 | * This is most like caused by the users own | |
5091 | * plugins updating the function. This overrides the | |
5092 | * system defaults. | |
5093 | */ | |
5094 | pr_stat("override of function helper '%s'", name); | |
5095 | remove_func_handler(pevent, name); | |
5096 | } | |
5097 | ||
67ed939c NK |
5098 | func_handle = malloc(sizeof(*func_handle)); |
5099 | if (!func_handle) { | |
5100 | do_warning("Failed to allocate function handler"); | |
5101 | return PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
5102 | } | |
f7d82350 SR |
5103 | memset(func_handle, 0, sizeof(*func_handle)); |
5104 | ||
5105 | func_handle->ret_type = ret_type; | |
5106 | func_handle->name = strdup(name); | |
5107 | func_handle->func = func; | |
67ed939c NK |
5108 | if (!func_handle->name) { |
5109 | do_warning("Failed to allocate function name"); | |
5110 | free(func_handle); | |
5111 | return PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
5112 | } | |
f7d82350 SR |
5113 | |
5114 | next_param = &(func_handle->params); | |
5115 | va_start(ap, name); | |
5116 | for (;;) { | |
5117 | type = va_arg(ap, enum pevent_func_arg_type); | |
5118 | if (type == PEVENT_FUNC_ARG_VOID) | |
5119 | break; | |
5120 | ||
5121 | if (type < 0 || type >= PEVENT_FUNC_ARG_MAX_TYPES) { | |
67ed939c NK |
5122 | do_warning("Invalid argument type %d", type); |
5123 | ret = PEVENT_ERRNO__INVALID_ARG_TYPE; | |
f7d82350 SR |
5124 | goto out_free; |
5125 | } | |
5126 | ||
67ed939c NK |
5127 | param = malloc(sizeof(*param)); |
5128 | if (!param) { | |
5129 | do_warning("Failed to allocate function param"); | |
5130 | ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
5131 | goto out_free; | |
5132 | } | |
f7d82350 SR |
5133 | param->type = type; |
5134 | param->next = NULL; | |
5135 | ||
5136 | *next_param = param; | |
5137 | next_param = &(param->next); | |
5138 | ||
5139 | func_handle->nr_args++; | |
5140 | } | |
5141 | va_end(ap); | |
5142 | ||
5143 | func_handle->next = pevent->func_handlers; | |
5144 | pevent->func_handlers = func_handle; | |
5145 | ||
5146 | return 0; | |
5147 | out_free: | |
5148 | va_end(ap); | |
5149 | free_func_handle(func_handle); | |
67ed939c | 5150 | return ret; |
f7d82350 SR |
5151 | } |
5152 | ||
5153 | /** | |
16e6b8fd | 5154 | * pevent_register_event_handler - register a way to parse an event |
f7d82350 SR |
5155 | * @pevent: the handle to the pevent |
5156 | * @id: the id of the event to register | |
5157 | * @sys_name: the system name the event belongs to | |
5158 | * @event_name: the name of the event | |
5159 | * @func: the function to call to parse the event information | |
16e6b8fd | 5160 | * @context: the data to be passed to @func |
f7d82350 SR |
5161 | * |
5162 | * This function allows a developer to override the parsing of | |
5163 | * a given event. If for some reason the default print format | |
5164 | * is not sufficient, this function will register a function | |
5165 | * for an event to be used to parse the data instead. | |
5166 | * | |
5167 | * If @id is >= 0, then it is used to find the event. | |
5168 | * else @sys_name and @event_name are used. | |
5169 | */ | |
5170 | int pevent_register_event_handler(struct pevent *pevent, | |
5171 | int id, char *sys_name, char *event_name, | |
5172 | pevent_event_handler_func func, | |
5173 | void *context) | |
5174 | { | |
5175 | struct event_format *event; | |
5176 | struct event_handler *handle; | |
5177 | ||
5178 | if (id >= 0) { | |
5179 | /* search by id */ | |
5180 | event = pevent_find_event(pevent, id); | |
5181 | if (!event) | |
5182 | goto not_found; | |
5183 | if (event_name && (strcmp(event_name, event->name) != 0)) | |
5184 | goto not_found; | |
5185 | if (sys_name && (strcmp(sys_name, event->system) != 0)) | |
5186 | goto not_found; | |
5187 | } else { | |
5188 | event = pevent_find_event_by_name(pevent, sys_name, event_name); | |
5189 | if (!event) | |
5190 | goto not_found; | |
5191 | } | |
5192 | ||
5193 | pr_stat("overriding event (%d) %s:%s with new print handler", | |
5194 | event->id, event->system, event->name); | |
5195 | ||
5196 | event->handler = func; | |
5197 | event->context = context; | |
5198 | return 0; | |
5199 | ||
5200 | not_found: | |
5201 | /* Save for later use. */ | |
0ca8da00 NK |
5202 | handle = malloc(sizeof(*handle)); |
5203 | if (!handle) { | |
5204 | do_warning("Failed to allocate event handler"); | |
5205 | return PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
5206 | } | |
5207 | ||
42c80139 | 5208 | memset(handle, 0, sizeof(*handle)); |
f7d82350 SR |
5209 | handle->id = id; |
5210 | if (event_name) | |
5211 | handle->event_name = strdup(event_name); | |
5212 | if (sys_name) | |
5213 | handle->sys_name = strdup(sys_name); | |
5214 | ||
ca63858e NK |
5215 | if ((event_name && !handle->event_name) || |
5216 | (sys_name && !handle->sys_name)) { | |
0ca8da00 NK |
5217 | do_warning("Failed to allocate event/sys name"); |
5218 | free((void *)handle->event_name); | |
5219 | free((void *)handle->sys_name); | |
5220 | free(handle); | |
5221 | return PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
ca63858e NK |
5222 | } |
5223 | ||
f7d82350 SR |
5224 | handle->func = func; |
5225 | handle->next = pevent->handlers; | |
5226 | pevent->handlers = handle; | |
5227 | handle->context = context; | |
5228 | ||
5229 | return -1; | |
5230 | } | |
5231 | ||
5232 | /** | |
5233 | * pevent_alloc - create a pevent handle | |
5234 | */ | |
5235 | struct pevent *pevent_alloc(void) | |
5236 | { | |
5237 | struct pevent *pevent; | |
5238 | ||
5239 | pevent = malloc(sizeof(*pevent)); | |
5240 | if (!pevent) | |
5241 | return NULL; | |
5242 | memset(pevent, 0, sizeof(*pevent)); | |
5243 | pevent->ref_count = 1; | |
5244 | ||
5245 | return pevent; | |
5246 | } | |
5247 | ||
5248 | void pevent_ref(struct pevent *pevent) | |
5249 | { | |
5250 | pevent->ref_count++; | |
5251 | } | |
5252 | ||
5253 | static void free_format_fields(struct format_field *field) | |
5254 | { | |
5255 | struct format_field *next; | |
5256 | ||
5257 | while (field) { | |
5258 | next = field->next; | |
5259 | free(field->type); | |
5260 | free(field->name); | |
5261 | free(field); | |
5262 | field = next; | |
5263 | } | |
5264 | } | |
5265 | ||
5266 | static void free_formats(struct format *format) | |
5267 | { | |
5268 | free_format_fields(format->common_fields); | |
5269 | free_format_fields(format->fields); | |
5270 | } | |
5271 | ||
5272 | static void free_event(struct event_format *event) | |
5273 | { | |
5274 | free(event->name); | |
5275 | free(event->system); | |
5276 | ||
5277 | free_formats(&event->format); | |
5278 | ||
5279 | free(event->print_fmt.format); | |
5280 | free_args(event->print_fmt.args); | |
5281 | ||
5282 | free(event); | |
5283 | } | |
5284 | ||
5285 | /** | |
5286 | * pevent_free - free a pevent handle | |
5287 | * @pevent: the pevent handle to free | |
5288 | */ | |
5289 | void pevent_free(struct pevent *pevent) | |
5290 | { | |
a2525a08 SR |
5291 | struct cmdline_list *cmdlist, *cmdnext; |
5292 | struct func_list *funclist, *funcnext; | |
5293 | struct printk_list *printklist, *printknext; | |
f7d82350 SR |
5294 | struct pevent_function_handler *func_handler; |
5295 | struct event_handler *handle; | |
5296 | int i; | |
5297 | ||
a2525a08 SR |
5298 | if (!pevent) |
5299 | return; | |
5300 | ||
5301 | cmdlist = pevent->cmdlist; | |
5302 | funclist = pevent->funclist; | |
5303 | printklist = pevent->printklist; | |
5304 | ||
f7d82350 SR |
5305 | pevent->ref_count--; |
5306 | if (pevent->ref_count) | |
5307 | return; | |
5308 | ||
5309 | if (pevent->cmdlines) { | |
5310 | for (i = 0; i < pevent->cmdline_count; i++) | |
5311 | free(pevent->cmdlines[i].comm); | |
5312 | free(pevent->cmdlines); | |
5313 | } | |
5314 | ||
5315 | while (cmdlist) { | |
5316 | cmdnext = cmdlist->next; | |
5317 | free(cmdlist->comm); | |
5318 | free(cmdlist); | |
5319 | cmdlist = cmdnext; | |
5320 | } | |
5321 | ||
5322 | if (pevent->func_map) { | |
5323 | for (i = 0; i < pevent->func_count; i++) { | |
5324 | free(pevent->func_map[i].func); | |
5325 | free(pevent->func_map[i].mod); | |
5326 | } | |
5327 | free(pevent->func_map); | |
5328 | } | |
5329 | ||
5330 | while (funclist) { | |
5331 | funcnext = funclist->next; | |
5332 | free(funclist->func); | |
5333 | free(funclist->mod); | |
5334 | free(funclist); | |
5335 | funclist = funcnext; | |
5336 | } | |
5337 | ||
5338 | while (pevent->func_handlers) { | |
5339 | func_handler = pevent->func_handlers; | |
5340 | pevent->func_handlers = func_handler->next; | |
5341 | free_func_handle(func_handler); | |
5342 | } | |
5343 | ||
5344 | if (pevent->printk_map) { | |
5345 | for (i = 0; i < pevent->printk_count; i++) | |
5346 | free(pevent->printk_map[i].printk); | |
5347 | free(pevent->printk_map); | |
5348 | } | |
5349 | ||
5350 | while (printklist) { | |
5351 | printknext = printklist->next; | |
5352 | free(printklist->printk); | |
5353 | free(printklist); | |
5354 | printklist = printknext; | |
5355 | } | |
5356 | ||
5357 | for (i = 0; i < pevent->nr_events; i++) | |
5358 | free_event(pevent->events[i]); | |
5359 | ||
5360 | while (pevent->handlers) { | |
5361 | handle = pevent->handlers; | |
5362 | pevent->handlers = handle->next; | |
5363 | free_handler(handle); | |
5364 | } | |
5365 | ||
5366 | free(pevent->events); | |
5367 | free(pevent->sort_events); | |
5368 | ||
5369 | free(pevent); | |
5370 | } | |
5371 | ||
5372 | void pevent_unref(struct pevent *pevent) | |
5373 | { | |
5374 | pevent_free(pevent); | |
5375 | } |