Commit | Line | Data |
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f7d82350 SR |
1 | /* |
2 | * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com> | |
3 | * | |
4 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
5 | * This program is free software; you can redistribute it and/or | |
6 | * modify it under the terms of the GNU Lesser General Public | |
7 | * License as published by the Free Software Foundation; | |
8 | * version 2.1 of the License (not later!) | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU Lesser General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU Lesser General Public | |
7b9f6b40 | 16 | * License along with this program; if not, see <http://www.gnu.org/licenses> |
f7d82350 SR |
17 | * |
18 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
19 | * | |
20 | * The parts for function graph printing was taken and modified from the | |
21 | * Linux Kernel that were written by | |
22 | * - Copyright (C) 2009 Frederic Weisbecker, | |
23 | * Frederic Weisbecker gave his permission to relicense the code to | |
24 | * the Lesser General Public License. | |
25 | */ | |
f7d82350 SR |
26 | #include <stdio.h> |
27 | #include <stdlib.h> | |
28 | #include <string.h> | |
29 | #include <stdarg.h> | |
30 | #include <ctype.h> | |
31 | #include <errno.h> | |
0cf26013 | 32 | #include <stdint.h> |
a6d2a61a | 33 | #include <limits.h> |
f7d82350 SR |
34 | |
35 | #include "event-parse.h" | |
668fe01f | 36 | #include "event-utils.h" |
f7d82350 SR |
37 | |
38 | static const char *input_buf; | |
39 | static unsigned long long input_buf_ptr; | |
40 | static unsigned long long input_buf_siz; | |
41 | ||
5205aec9 TZ |
42 | static int is_flag_field; |
43 | static int is_symbolic_field; | |
44 | ||
f7d82350 SR |
45 | static int show_warning = 1; |
46 | ||
47 | #define do_warning(fmt, ...) \ | |
48 | do { \ | |
49 | if (show_warning) \ | |
50 | warning(fmt, ##__VA_ARGS__); \ | |
51 | } while (0) | |
52 | ||
3388cc3e NK |
53 | #define do_warning_event(event, fmt, ...) \ |
54 | do { \ | |
55 | if (!show_warning) \ | |
56 | continue; \ | |
57 | \ | |
58 | if (event) \ | |
59 | warning("[%s:%s] " fmt, event->system, \ | |
60 | event->name, ##__VA_ARGS__); \ | |
61 | else \ | |
62 | warning(fmt, ##__VA_ARGS__); \ | |
63 | } while (0) | |
64 | ||
f7d82350 SR |
65 | static void init_input_buf(const char *buf, unsigned long long size) |
66 | { | |
67 | input_buf = buf; | |
68 | input_buf_siz = size; | |
69 | input_buf_ptr = 0; | |
70 | } | |
71 | ||
72 | const char *pevent_get_input_buf(void) | |
73 | { | |
74 | return input_buf; | |
75 | } | |
76 | ||
77 | unsigned long long pevent_get_input_buf_ptr(void) | |
78 | { | |
79 | return input_buf_ptr; | |
80 | } | |
81 | ||
82 | struct event_handler { | |
83 | struct event_handler *next; | |
84 | int id; | |
85 | const char *sys_name; | |
86 | const char *event_name; | |
87 | pevent_event_handler_func func; | |
88 | void *context; | |
89 | }; | |
90 | ||
91 | struct pevent_func_params { | |
92 | struct pevent_func_params *next; | |
93 | enum pevent_func_arg_type type; | |
94 | }; | |
95 | ||
96 | struct pevent_function_handler { | |
97 | struct pevent_function_handler *next; | |
98 | enum pevent_func_arg_type ret_type; | |
99 | char *name; | |
100 | pevent_func_handler func; | |
101 | struct pevent_func_params *params; | |
102 | int nr_args; | |
103 | }; | |
104 | ||
105 | static unsigned long long | |
106 | process_defined_func(struct trace_seq *s, void *data, int size, | |
107 | struct event_format *event, struct print_arg *arg); | |
108 | ||
109 | static void free_func_handle(struct pevent_function_handler *func); | |
110 | ||
111 | /** | |
112 | * pevent_buffer_init - init buffer for parsing | |
113 | * @buf: buffer to parse | |
114 | * @size: the size of the buffer | |
115 | * | |
116 | * For use with pevent_read_token(), this initializes the internal | |
117 | * buffer that pevent_read_token() will parse. | |
118 | */ | |
119 | void pevent_buffer_init(const char *buf, unsigned long long size) | |
120 | { | |
121 | init_input_buf(buf, size); | |
122 | } | |
123 | ||
124 | void breakpoint(void) | |
125 | { | |
126 | static int x; | |
127 | x++; | |
128 | } | |
129 | ||
130 | struct print_arg *alloc_arg(void) | |
131 | { | |
87162d81 | 132 | return calloc(1, sizeof(struct print_arg)); |
f7d82350 SR |
133 | } |
134 | ||
135 | struct cmdline { | |
136 | char *comm; | |
137 | int pid; | |
138 | }; | |
139 | ||
140 | static int cmdline_cmp(const void *a, const void *b) | |
141 | { | |
142 | const struct cmdline *ca = a; | |
143 | const struct cmdline *cb = b; | |
144 | ||
145 | if (ca->pid < cb->pid) | |
146 | return -1; | |
147 | if (ca->pid > cb->pid) | |
148 | return 1; | |
149 | ||
150 | return 0; | |
151 | } | |
152 | ||
153 | struct cmdline_list { | |
154 | struct cmdline_list *next; | |
155 | char *comm; | |
156 | int pid; | |
157 | }; | |
158 | ||
159 | static int cmdline_init(struct pevent *pevent) | |
160 | { | |
161 | struct cmdline_list *cmdlist = pevent->cmdlist; | |
162 | struct cmdline_list *item; | |
163 | struct cmdline *cmdlines; | |
164 | int i; | |
165 | ||
a6d2a61a ACM |
166 | cmdlines = malloc(sizeof(*cmdlines) * pevent->cmdline_count); |
167 | if (!cmdlines) | |
168 | return -1; | |
f7d82350 SR |
169 | |
170 | i = 0; | |
171 | while (cmdlist) { | |
172 | cmdlines[i].pid = cmdlist->pid; | |
173 | cmdlines[i].comm = cmdlist->comm; | |
174 | i++; | |
175 | item = cmdlist; | |
176 | cmdlist = cmdlist->next; | |
177 | free(item); | |
178 | } | |
179 | ||
180 | qsort(cmdlines, pevent->cmdline_count, sizeof(*cmdlines), cmdline_cmp); | |
181 | ||
182 | pevent->cmdlines = cmdlines; | |
183 | pevent->cmdlist = NULL; | |
184 | ||
185 | return 0; | |
186 | } | |
187 | ||
27f94d52 | 188 | static const char *find_cmdline(struct pevent *pevent, int pid) |
f7d82350 SR |
189 | { |
190 | const struct cmdline *comm; | |
191 | struct cmdline key; | |
192 | ||
193 | if (!pid) | |
194 | return "<idle>"; | |
195 | ||
a6d2a61a ACM |
196 | if (!pevent->cmdlines && cmdline_init(pevent)) |
197 | return "<not enough memory for cmdlines!>"; | |
f7d82350 SR |
198 | |
199 | key.pid = pid; | |
200 | ||
201 | comm = bsearch(&key, pevent->cmdlines, pevent->cmdline_count, | |
202 | sizeof(*pevent->cmdlines), cmdline_cmp); | |
203 | ||
204 | if (comm) | |
205 | return comm->comm; | |
206 | return "<...>"; | |
207 | } | |
208 | ||
209 | /** | |
210 | * pevent_pid_is_registered - return if a pid has a cmdline registered | |
211 | * @pevent: handle for the pevent | |
212 | * @pid: The pid to check if it has a cmdline registered with. | |
213 | * | |
214 | * Returns 1 if the pid has a cmdline mapped to it | |
215 | * 0 otherwise. | |
216 | */ | |
217 | int pevent_pid_is_registered(struct pevent *pevent, int pid) | |
218 | { | |
219 | const struct cmdline *comm; | |
220 | struct cmdline key; | |
221 | ||
222 | if (!pid) | |
223 | return 1; | |
224 | ||
a6d2a61a ACM |
225 | if (!pevent->cmdlines && cmdline_init(pevent)) |
226 | return 0; | |
f7d82350 SR |
227 | |
228 | key.pid = pid; | |
229 | ||
230 | comm = bsearch(&key, pevent->cmdlines, pevent->cmdline_count, | |
231 | sizeof(*pevent->cmdlines), cmdline_cmp); | |
232 | ||
233 | if (comm) | |
234 | return 1; | |
235 | return 0; | |
236 | } | |
237 | ||
238 | /* | |
239 | * If the command lines have been converted to an array, then | |
240 | * we must add this pid. This is much slower than when cmdlines | |
241 | * are added before the array is initialized. | |
242 | */ | |
243 | static int add_new_comm(struct pevent *pevent, const char *comm, int pid) | |
244 | { | |
245 | struct cmdline *cmdlines = pevent->cmdlines; | |
246 | const struct cmdline *cmdline; | |
247 | struct cmdline key; | |
248 | ||
249 | if (!pid) | |
250 | return 0; | |
251 | ||
252 | /* avoid duplicates */ | |
253 | key.pid = pid; | |
254 | ||
255 | cmdline = bsearch(&key, pevent->cmdlines, pevent->cmdline_count, | |
256 | sizeof(*pevent->cmdlines), cmdline_cmp); | |
257 | if (cmdline) { | |
258 | errno = EEXIST; | |
259 | return -1; | |
260 | } | |
261 | ||
262 | cmdlines = realloc(cmdlines, sizeof(*cmdlines) * (pevent->cmdline_count + 1)); | |
263 | if (!cmdlines) { | |
264 | errno = ENOMEM; | |
265 | return -1; | |
266 | } | |
267 | ||
f7d82350 | 268 | cmdlines[pevent->cmdline_count].comm = strdup(comm); |
a6d2a61a ACM |
269 | if (!cmdlines[pevent->cmdline_count].comm) { |
270 | free(cmdlines); | |
271 | errno = ENOMEM; | |
272 | return -1; | |
273 | } | |
274 | ||
275 | cmdlines[pevent->cmdline_count].pid = pid; | |
f7d82350 SR |
276 | |
277 | if (cmdlines[pevent->cmdline_count].comm) | |
278 | pevent->cmdline_count++; | |
279 | ||
280 | qsort(cmdlines, pevent->cmdline_count, sizeof(*cmdlines), cmdline_cmp); | |
281 | pevent->cmdlines = cmdlines; | |
282 | ||
283 | return 0; | |
284 | } | |
285 | ||
286 | /** | |
287 | * pevent_register_comm - register a pid / comm mapping | |
288 | * @pevent: handle for the pevent | |
289 | * @comm: the command line to register | |
290 | * @pid: the pid to map the command line to | |
291 | * | |
292 | * This adds a mapping to search for command line names with | |
293 | * a given pid. The comm is duplicated. | |
294 | */ | |
295 | int pevent_register_comm(struct pevent *pevent, const char *comm, int pid) | |
296 | { | |
297 | struct cmdline_list *item; | |
298 | ||
299 | if (pevent->cmdlines) | |
300 | return add_new_comm(pevent, comm, pid); | |
301 | ||
a6d2a61a ACM |
302 | item = malloc(sizeof(*item)); |
303 | if (!item) | |
304 | return -1; | |
305 | ||
f7d82350 | 306 | item->comm = strdup(comm); |
a6d2a61a ACM |
307 | if (!item->comm) { |
308 | free(item); | |
309 | return -1; | |
310 | } | |
f7d82350 SR |
311 | item->pid = pid; |
312 | item->next = pevent->cmdlist; | |
313 | ||
314 | pevent->cmdlist = item; | |
315 | pevent->cmdline_count++; | |
316 | ||
317 | return 0; | |
318 | } | |
319 | ||
1b372ca5 YY |
320 | void pevent_register_trace_clock(struct pevent *pevent, char *trace_clock) |
321 | { | |
322 | pevent->trace_clock = trace_clock; | |
323 | } | |
324 | ||
f7d82350 SR |
325 | struct func_map { |
326 | unsigned long long addr; | |
327 | char *func; | |
328 | char *mod; | |
329 | }; | |
330 | ||
331 | struct func_list { | |
332 | struct func_list *next; | |
333 | unsigned long long addr; | |
334 | char *func; | |
335 | char *mod; | |
336 | }; | |
337 | ||
338 | static int func_cmp(const void *a, const void *b) | |
339 | { | |
340 | const struct func_map *fa = a; | |
341 | const struct func_map *fb = b; | |
342 | ||
343 | if (fa->addr < fb->addr) | |
344 | return -1; | |
345 | if (fa->addr > fb->addr) | |
346 | return 1; | |
347 | ||
348 | return 0; | |
349 | } | |
350 | ||
351 | /* | |
352 | * We are searching for a record in between, not an exact | |
353 | * match. | |
354 | */ | |
355 | static int func_bcmp(const void *a, const void *b) | |
356 | { | |
357 | const struct func_map *fa = a; | |
358 | const struct func_map *fb = b; | |
359 | ||
360 | if ((fa->addr == fb->addr) || | |
361 | ||
362 | (fa->addr > fb->addr && | |
363 | fa->addr < (fb+1)->addr)) | |
364 | return 0; | |
365 | ||
366 | if (fa->addr < fb->addr) | |
367 | return -1; | |
368 | ||
369 | return 1; | |
370 | } | |
371 | ||
372 | static int func_map_init(struct pevent *pevent) | |
373 | { | |
374 | struct func_list *funclist; | |
375 | struct func_list *item; | |
376 | struct func_map *func_map; | |
377 | int i; | |
378 | ||
a6d2a61a ACM |
379 | func_map = malloc(sizeof(*func_map) * (pevent->func_count + 1)); |
380 | if (!func_map) | |
381 | return -1; | |
382 | ||
f7d82350 SR |
383 | funclist = pevent->funclist; |
384 | ||
385 | i = 0; | |
386 | while (funclist) { | |
387 | func_map[i].func = funclist->func; | |
388 | func_map[i].addr = funclist->addr; | |
389 | func_map[i].mod = funclist->mod; | |
390 | i++; | |
391 | item = funclist; | |
392 | funclist = funclist->next; | |
393 | free(item); | |
394 | } | |
395 | ||
396 | qsort(func_map, pevent->func_count, sizeof(*func_map), func_cmp); | |
397 | ||
398 | /* | |
399 | * Add a special record at the end. | |
400 | */ | |
401 | func_map[pevent->func_count].func = NULL; | |
402 | func_map[pevent->func_count].addr = 0; | |
403 | func_map[pevent->func_count].mod = NULL; | |
404 | ||
405 | pevent->func_map = func_map; | |
406 | pevent->funclist = NULL; | |
407 | ||
408 | return 0; | |
409 | } | |
410 | ||
411 | static struct func_map * | |
412 | find_func(struct pevent *pevent, unsigned long long addr) | |
413 | { | |
414 | struct func_map *func; | |
415 | struct func_map key; | |
416 | ||
417 | if (!pevent->func_map) | |
418 | func_map_init(pevent); | |
419 | ||
420 | key.addr = addr; | |
421 | ||
422 | func = bsearch(&key, pevent->func_map, pevent->func_count, | |
423 | sizeof(*pevent->func_map), func_bcmp); | |
424 | ||
425 | return func; | |
426 | } | |
427 | ||
428 | /** | |
429 | * pevent_find_function - find a function by a given address | |
430 | * @pevent: handle for the pevent | |
431 | * @addr: the address to find the function with | |
432 | * | |
433 | * Returns a pointer to the function stored that has the given | |
434 | * address. Note, the address does not have to be exact, it | |
435 | * will select the function that would contain the address. | |
436 | */ | |
437 | const char *pevent_find_function(struct pevent *pevent, unsigned long long addr) | |
438 | { | |
439 | struct func_map *map; | |
440 | ||
441 | map = find_func(pevent, addr); | |
442 | if (!map) | |
443 | return NULL; | |
444 | ||
445 | return map->func; | |
446 | } | |
447 | ||
448 | /** | |
449 | * pevent_find_function_address - find a function address by a given address | |
450 | * @pevent: handle for the pevent | |
451 | * @addr: the address to find the function with | |
452 | * | |
453 | * Returns the address the function starts at. This can be used in | |
454 | * conjunction with pevent_find_function to print both the function | |
455 | * name and the function offset. | |
456 | */ | |
457 | unsigned long long | |
458 | pevent_find_function_address(struct pevent *pevent, unsigned long long addr) | |
459 | { | |
460 | struct func_map *map; | |
461 | ||
462 | map = find_func(pevent, addr); | |
463 | if (!map) | |
464 | return 0; | |
465 | ||
466 | return map->addr; | |
467 | } | |
468 | ||
469 | /** | |
470 | * pevent_register_function - register a function with a given address | |
471 | * @pevent: handle for the pevent | |
472 | * @function: the function name to register | |
473 | * @addr: the address the function starts at | |
474 | * @mod: the kernel module the function may be in (NULL for none) | |
475 | * | |
476 | * This registers a function name with an address and module. | |
477 | * The @func passed in is duplicated. | |
478 | */ | |
479 | int pevent_register_function(struct pevent *pevent, char *func, | |
480 | unsigned long long addr, char *mod) | |
481 | { | |
a6d2a61a | 482 | struct func_list *item = malloc(sizeof(*item)); |
f7d82350 | 483 | |
a6d2a61a ACM |
484 | if (!item) |
485 | return -1; | |
f7d82350 SR |
486 | |
487 | item->next = pevent->funclist; | |
488 | item->func = strdup(func); | |
a6d2a61a ACM |
489 | if (!item->func) |
490 | goto out_free; | |
491 | ||
492 | if (mod) { | |
f7d82350 | 493 | item->mod = strdup(mod); |
a6d2a61a ACM |
494 | if (!item->mod) |
495 | goto out_free_func; | |
496 | } else | |
f7d82350 SR |
497 | item->mod = NULL; |
498 | item->addr = addr; | |
499 | ||
ca63858e | 500 | pevent->funclist = item; |
f7d82350 SR |
501 | pevent->func_count++; |
502 | ||
503 | return 0; | |
a6d2a61a ACM |
504 | |
505 | out_free_func: | |
506 | free(item->func); | |
507 | item->func = NULL; | |
508 | out_free: | |
509 | free(item); | |
510 | errno = ENOMEM; | |
511 | return -1; | |
f7d82350 SR |
512 | } |
513 | ||
514 | /** | |
515 | * pevent_print_funcs - print out the stored functions | |
516 | * @pevent: handle for the pevent | |
517 | * | |
518 | * This prints out the stored functions. | |
519 | */ | |
520 | void pevent_print_funcs(struct pevent *pevent) | |
521 | { | |
522 | int i; | |
523 | ||
524 | if (!pevent->func_map) | |
525 | func_map_init(pevent); | |
526 | ||
527 | for (i = 0; i < (int)pevent->func_count; i++) { | |
528 | printf("%016llx %s", | |
529 | pevent->func_map[i].addr, | |
530 | pevent->func_map[i].func); | |
531 | if (pevent->func_map[i].mod) | |
532 | printf(" [%s]\n", pevent->func_map[i].mod); | |
533 | else | |
534 | printf("\n"); | |
535 | } | |
536 | } | |
537 | ||
538 | struct printk_map { | |
539 | unsigned long long addr; | |
540 | char *printk; | |
541 | }; | |
542 | ||
543 | struct printk_list { | |
544 | struct printk_list *next; | |
545 | unsigned long long addr; | |
546 | char *printk; | |
547 | }; | |
548 | ||
549 | static int printk_cmp(const void *a, const void *b) | |
550 | { | |
0fc45ef5 NK |
551 | const struct printk_map *pa = a; |
552 | const struct printk_map *pb = b; | |
f7d82350 | 553 | |
0fc45ef5 | 554 | if (pa->addr < pb->addr) |
f7d82350 | 555 | return -1; |
0fc45ef5 | 556 | if (pa->addr > pb->addr) |
f7d82350 SR |
557 | return 1; |
558 | ||
559 | return 0; | |
560 | } | |
561 | ||
a6d2a61a | 562 | static int printk_map_init(struct pevent *pevent) |
f7d82350 SR |
563 | { |
564 | struct printk_list *printklist; | |
565 | struct printk_list *item; | |
566 | struct printk_map *printk_map; | |
567 | int i; | |
568 | ||
a6d2a61a ACM |
569 | printk_map = malloc(sizeof(*printk_map) * (pevent->printk_count + 1)); |
570 | if (!printk_map) | |
571 | return -1; | |
f7d82350 SR |
572 | |
573 | printklist = pevent->printklist; | |
574 | ||
575 | i = 0; | |
576 | while (printklist) { | |
577 | printk_map[i].printk = printklist->printk; | |
578 | printk_map[i].addr = printklist->addr; | |
579 | i++; | |
580 | item = printklist; | |
581 | printklist = printklist->next; | |
582 | free(item); | |
583 | } | |
584 | ||
585 | qsort(printk_map, pevent->printk_count, sizeof(*printk_map), printk_cmp); | |
586 | ||
587 | pevent->printk_map = printk_map; | |
588 | pevent->printklist = NULL; | |
a6d2a61a ACM |
589 | |
590 | return 0; | |
f7d82350 SR |
591 | } |
592 | ||
593 | static struct printk_map * | |
594 | find_printk(struct pevent *pevent, unsigned long long addr) | |
595 | { | |
596 | struct printk_map *printk; | |
597 | struct printk_map key; | |
598 | ||
a6d2a61a ACM |
599 | if (!pevent->printk_map && printk_map_init(pevent)) |
600 | return NULL; | |
f7d82350 SR |
601 | |
602 | key.addr = addr; | |
603 | ||
604 | printk = bsearch(&key, pevent->printk_map, pevent->printk_count, | |
605 | sizeof(*pevent->printk_map), printk_cmp); | |
606 | ||
607 | return printk; | |
608 | } | |
609 | ||
610 | /** | |
611 | * pevent_register_print_string - register a string by its address | |
612 | * @pevent: handle for the pevent | |
613 | * @fmt: the string format to register | |
614 | * @addr: the address the string was located at | |
615 | * | |
616 | * This registers a string by the address it was stored in the kernel. | |
617 | * The @fmt passed in is duplicated. | |
618 | */ | |
18900af8 | 619 | int pevent_register_print_string(struct pevent *pevent, const char *fmt, |
f7d82350 SR |
620 | unsigned long long addr) |
621 | { | |
a6d2a61a | 622 | struct printk_list *item = malloc(sizeof(*item)); |
18900af8 | 623 | char *p; |
f7d82350 | 624 | |
a6d2a61a ACM |
625 | if (!item) |
626 | return -1; | |
f7d82350 SR |
627 | |
628 | item->next = pevent->printklist; | |
f7d82350 SR |
629 | item->addr = addr; |
630 | ||
18900af8 SRRH |
631 | /* Strip off quotes and '\n' from the end */ |
632 | if (fmt[0] == '"') | |
633 | fmt++; | |
a6d2a61a | 634 | item->printk = strdup(fmt); |
ca63858e | 635 | if (!item->printk) |
a6d2a61a | 636 | goto out_free; |
ca63858e | 637 | |
18900af8 SRRH |
638 | p = item->printk + strlen(item->printk) - 1; |
639 | if (*p == '"') | |
640 | *p = 0; | |
641 | ||
642 | p -= 2; | |
643 | if (strcmp(p, "\\n") == 0) | |
644 | *p = 0; | |
645 | ||
ca63858e | 646 | pevent->printklist = item; |
f7d82350 SR |
647 | pevent->printk_count++; |
648 | ||
649 | return 0; | |
a6d2a61a ACM |
650 | |
651 | out_free: | |
652 | free(item); | |
653 | errno = ENOMEM; | |
654 | return -1; | |
f7d82350 SR |
655 | } |
656 | ||
657 | /** | |
658 | * pevent_print_printk - print out the stored strings | |
659 | * @pevent: handle for the pevent | |
660 | * | |
661 | * This prints the string formats that were stored. | |
662 | */ | |
663 | void pevent_print_printk(struct pevent *pevent) | |
664 | { | |
665 | int i; | |
666 | ||
667 | if (!pevent->printk_map) | |
668 | printk_map_init(pevent); | |
669 | ||
670 | for (i = 0; i < (int)pevent->printk_count; i++) { | |
671 | printf("%016llx %s\n", | |
672 | pevent->printk_map[i].addr, | |
673 | pevent->printk_map[i].printk); | |
674 | } | |
675 | } | |
676 | ||
677 | static struct event_format *alloc_event(void) | |
678 | { | |
87162d81 | 679 | return calloc(1, sizeof(struct event_format)); |
f7d82350 SR |
680 | } |
681 | ||
a6d2a61a | 682 | static int add_event(struct pevent *pevent, struct event_format *event) |
f7d82350 SR |
683 | { |
684 | int i; | |
a6d2a61a ACM |
685 | struct event_format **events = realloc(pevent->events, sizeof(event) * |
686 | (pevent->nr_events + 1)); | |
687 | if (!events) | |
688 | return -1; | |
f7d82350 | 689 | |
a6d2a61a | 690 | pevent->events = events; |
f7d82350 SR |
691 | |
692 | for (i = 0; i < pevent->nr_events; i++) { | |
693 | if (pevent->events[i]->id > event->id) | |
694 | break; | |
695 | } | |
696 | if (i < pevent->nr_events) | |
697 | memmove(&pevent->events[i + 1], | |
698 | &pevent->events[i], | |
699 | sizeof(event) * (pevent->nr_events - i)); | |
700 | ||
701 | pevent->events[i] = event; | |
702 | pevent->nr_events++; | |
703 | ||
704 | event->pevent = pevent; | |
a6d2a61a ACM |
705 | |
706 | return 0; | |
f7d82350 SR |
707 | } |
708 | ||
709 | static int event_item_type(enum event_type type) | |
710 | { | |
711 | switch (type) { | |
712 | case EVENT_ITEM ... EVENT_SQUOTE: | |
713 | return 1; | |
714 | case EVENT_ERROR ... EVENT_DELIM: | |
715 | default: | |
716 | return 0; | |
717 | } | |
718 | } | |
719 | ||
720 | static void free_flag_sym(struct print_flag_sym *fsym) | |
721 | { | |
722 | struct print_flag_sym *next; | |
723 | ||
724 | while (fsym) { | |
725 | next = fsym->next; | |
726 | free(fsym->value); | |
727 | free(fsym->str); | |
728 | free(fsym); | |
729 | fsym = next; | |
730 | } | |
731 | } | |
732 | ||
733 | static void free_arg(struct print_arg *arg) | |
734 | { | |
735 | struct print_arg *farg; | |
736 | ||
737 | if (!arg) | |
738 | return; | |
739 | ||
740 | switch (arg->type) { | |
741 | case PRINT_ATOM: | |
742 | free(arg->atom.atom); | |
743 | break; | |
744 | case PRINT_FIELD: | |
745 | free(arg->field.name); | |
746 | break; | |
747 | case PRINT_FLAGS: | |
748 | free_arg(arg->flags.field); | |
749 | free(arg->flags.delim); | |
750 | free_flag_sym(arg->flags.flags); | |
751 | break; | |
752 | case PRINT_SYMBOL: | |
753 | free_arg(arg->symbol.field); | |
754 | free_flag_sym(arg->symbol.symbols); | |
755 | break; | |
e080e6f1 NK |
756 | case PRINT_HEX: |
757 | free_arg(arg->hex.field); | |
758 | free_arg(arg->hex.size); | |
759 | break; | |
f7d82350 SR |
760 | case PRINT_TYPE: |
761 | free(arg->typecast.type); | |
762 | free_arg(arg->typecast.item); | |
763 | break; | |
764 | case PRINT_STRING: | |
765 | case PRINT_BSTRING: | |
766 | free(arg->string.string); | |
767 | break; | |
768 | case PRINT_DYNAMIC_ARRAY: | |
769 | free(arg->dynarray.index); | |
770 | break; | |
771 | case PRINT_OP: | |
772 | free(arg->op.op); | |
773 | free_arg(arg->op.left); | |
774 | free_arg(arg->op.right); | |
775 | break; | |
776 | case PRINT_FUNC: | |
777 | while (arg->func.args) { | |
778 | farg = arg->func.args; | |
779 | arg->func.args = farg->next; | |
780 | free_arg(farg); | |
781 | } | |
782 | break; | |
783 | ||
784 | case PRINT_NULL: | |
785 | default: | |
786 | break; | |
787 | } | |
788 | ||
789 | free(arg); | |
790 | } | |
791 | ||
792 | static enum event_type get_type(int ch) | |
793 | { | |
794 | if (ch == '\n') | |
795 | return EVENT_NEWLINE; | |
796 | if (isspace(ch)) | |
797 | return EVENT_SPACE; | |
798 | if (isalnum(ch) || ch == '_') | |
799 | return EVENT_ITEM; | |
800 | if (ch == '\'') | |
801 | return EVENT_SQUOTE; | |
802 | if (ch == '"') | |
803 | return EVENT_DQUOTE; | |
804 | if (!isprint(ch)) | |
805 | return EVENT_NONE; | |
806 | if (ch == '(' || ch == ')' || ch == ',') | |
807 | return EVENT_DELIM; | |
808 | ||
809 | return EVENT_OP; | |
810 | } | |
811 | ||
812 | static int __read_char(void) | |
813 | { | |
814 | if (input_buf_ptr >= input_buf_siz) | |
815 | return -1; | |
816 | ||
817 | return input_buf[input_buf_ptr++]; | |
818 | } | |
819 | ||
820 | static int __peek_char(void) | |
821 | { | |
822 | if (input_buf_ptr >= input_buf_siz) | |
823 | return -1; | |
824 | ||
825 | return input_buf[input_buf_ptr]; | |
826 | } | |
827 | ||
828 | /** | |
829 | * pevent_peek_char - peek at the next character that will be read | |
830 | * | |
831 | * Returns the next character read, or -1 if end of buffer. | |
832 | */ | |
833 | int pevent_peek_char(void) | |
834 | { | |
835 | return __peek_char(); | |
836 | } | |
837 | ||
deba3fb2 NK |
838 | static int extend_token(char **tok, char *buf, int size) |
839 | { | |
840 | char *newtok = realloc(*tok, size); | |
841 | ||
842 | if (!newtok) { | |
843 | free(*tok); | |
844 | *tok = NULL; | |
845 | return -1; | |
846 | } | |
847 | ||
848 | if (!*tok) | |
849 | strcpy(newtok, buf); | |
850 | else | |
851 | strcat(newtok, buf); | |
852 | *tok = newtok; | |
853 | ||
854 | return 0; | |
855 | } | |
856 | ||
f7d82350 SR |
857 | static enum event_type force_token(const char *str, char **tok); |
858 | ||
859 | static enum event_type __read_token(char **tok) | |
860 | { | |
861 | char buf[BUFSIZ]; | |
862 | int ch, last_ch, quote_ch, next_ch; | |
863 | int i = 0; | |
864 | int tok_size = 0; | |
865 | enum event_type type; | |
866 | ||
867 | *tok = NULL; | |
868 | ||
869 | ||
870 | ch = __read_char(); | |
871 | if (ch < 0) | |
872 | return EVENT_NONE; | |
873 | ||
874 | type = get_type(ch); | |
875 | if (type == EVENT_NONE) | |
876 | return type; | |
877 | ||
878 | buf[i++] = ch; | |
879 | ||
880 | switch (type) { | |
881 | case EVENT_NEWLINE: | |
882 | case EVENT_DELIM: | |
0dbca1e3 ACM |
883 | if (asprintf(tok, "%c", ch) < 0) |
884 | return EVENT_ERROR; | |
885 | ||
f7d82350 SR |
886 | return type; |
887 | ||
888 | case EVENT_OP: | |
889 | switch (ch) { | |
890 | case '-': | |
891 | next_ch = __peek_char(); | |
892 | if (next_ch == '>') { | |
893 | buf[i++] = __read_char(); | |
894 | break; | |
895 | } | |
896 | /* fall through */ | |
897 | case '+': | |
898 | case '|': | |
899 | case '&': | |
900 | case '>': | |
901 | case '<': | |
902 | last_ch = ch; | |
903 | ch = __peek_char(); | |
904 | if (ch != last_ch) | |
905 | goto test_equal; | |
906 | buf[i++] = __read_char(); | |
907 | switch (last_ch) { | |
908 | case '>': | |
909 | case '<': | |
910 | goto test_equal; | |
911 | default: | |
912 | break; | |
913 | } | |
914 | break; | |
915 | case '!': | |
916 | case '=': | |
917 | goto test_equal; | |
918 | default: /* what should we do instead? */ | |
919 | break; | |
920 | } | |
921 | buf[i] = 0; | |
922 | *tok = strdup(buf); | |
923 | return type; | |
924 | ||
925 | test_equal: | |
926 | ch = __peek_char(); | |
927 | if (ch == '=') | |
928 | buf[i++] = __read_char(); | |
929 | goto out; | |
930 | ||
931 | case EVENT_DQUOTE: | |
932 | case EVENT_SQUOTE: | |
933 | /* don't keep quotes */ | |
934 | i--; | |
935 | quote_ch = ch; | |
936 | last_ch = 0; | |
937 | concat: | |
938 | do { | |
939 | if (i == (BUFSIZ - 1)) { | |
940 | buf[i] = 0; | |
f7d82350 | 941 | tok_size += BUFSIZ; |
deba3fb2 NK |
942 | |
943 | if (extend_token(tok, buf, tok_size) < 0) | |
944 | return EVENT_NONE; | |
f7d82350 SR |
945 | i = 0; |
946 | } | |
947 | last_ch = ch; | |
948 | ch = __read_char(); | |
949 | buf[i++] = ch; | |
950 | /* the '\' '\' will cancel itself */ | |
951 | if (ch == '\\' && last_ch == '\\') | |
952 | last_ch = 0; | |
953 | } while (ch != quote_ch || last_ch == '\\'); | |
954 | /* remove the last quote */ | |
955 | i--; | |
956 | ||
957 | /* | |
958 | * For strings (double quotes) check the next token. | |
959 | * If it is another string, concatinate the two. | |
960 | */ | |
961 | if (type == EVENT_DQUOTE) { | |
962 | unsigned long long save_input_buf_ptr = input_buf_ptr; | |
963 | ||
964 | do { | |
965 | ch = __read_char(); | |
966 | } while (isspace(ch)); | |
967 | if (ch == '"') | |
968 | goto concat; | |
969 | input_buf_ptr = save_input_buf_ptr; | |
970 | } | |
971 | ||
972 | goto out; | |
973 | ||
974 | case EVENT_ERROR ... EVENT_SPACE: | |
975 | case EVENT_ITEM: | |
976 | default: | |
977 | break; | |
978 | } | |
979 | ||
980 | while (get_type(__peek_char()) == type) { | |
981 | if (i == (BUFSIZ - 1)) { | |
982 | buf[i] = 0; | |
deba3fb2 | 983 | tok_size += BUFSIZ; |
f7d82350 | 984 | |
deba3fb2 | 985 | if (extend_token(tok, buf, tok_size) < 0) |
f7d82350 | 986 | return EVENT_NONE; |
f7d82350 SR |
987 | i = 0; |
988 | } | |
989 | ch = __read_char(); | |
990 | buf[i++] = ch; | |
991 | } | |
992 | ||
993 | out: | |
994 | buf[i] = 0; | |
deba3fb2 | 995 | if (extend_token(tok, buf, tok_size + i + 1) < 0) |
f7d82350 SR |
996 | return EVENT_NONE; |
997 | ||
998 | if (type == EVENT_ITEM) { | |
999 | /* | |
1000 | * Older versions of the kernel has a bug that | |
1001 | * creates invalid symbols and will break the mac80211 | |
1002 | * parsing. This is a work around to that bug. | |
1003 | * | |
1004 | * See Linux kernel commit: | |
1005 | * 811cb50baf63461ce0bdb234927046131fc7fa8b | |
1006 | */ | |
1007 | if (strcmp(*tok, "LOCAL_PR_FMT") == 0) { | |
1008 | free(*tok); | |
1009 | *tok = NULL; | |
1010 | return force_token("\"\%s\" ", tok); | |
1011 | } else if (strcmp(*tok, "STA_PR_FMT") == 0) { | |
1012 | free(*tok); | |
1013 | *tok = NULL; | |
1014 | return force_token("\" sta:%pM\" ", tok); | |
1015 | } else if (strcmp(*tok, "VIF_PR_FMT") == 0) { | |
1016 | free(*tok); | |
1017 | *tok = NULL; | |
1018 | return force_token("\" vif:%p(%d)\" ", tok); | |
1019 | } | |
1020 | } | |
1021 | ||
1022 | return type; | |
1023 | } | |
1024 | ||
1025 | static enum event_type force_token(const char *str, char **tok) | |
1026 | { | |
1027 | const char *save_input_buf; | |
1028 | unsigned long long save_input_buf_ptr; | |
1029 | unsigned long long save_input_buf_siz; | |
1030 | enum event_type type; | |
1031 | ||
1032 | /* save off the current input pointers */ | |
1033 | save_input_buf = input_buf; | |
1034 | save_input_buf_ptr = input_buf_ptr; | |
1035 | save_input_buf_siz = input_buf_siz; | |
1036 | ||
1037 | init_input_buf(str, strlen(str)); | |
1038 | ||
1039 | type = __read_token(tok); | |
1040 | ||
1041 | /* reset back to original token */ | |
1042 | input_buf = save_input_buf; | |
1043 | input_buf_ptr = save_input_buf_ptr; | |
1044 | input_buf_siz = save_input_buf_siz; | |
1045 | ||
1046 | return type; | |
1047 | } | |
1048 | ||
1049 | static void free_token(char *tok) | |
1050 | { | |
1051 | if (tok) | |
1052 | free(tok); | |
1053 | } | |
1054 | ||
1055 | static enum event_type read_token(char **tok) | |
1056 | { | |
1057 | enum event_type type; | |
1058 | ||
1059 | for (;;) { | |
1060 | type = __read_token(tok); | |
1061 | if (type != EVENT_SPACE) | |
1062 | return type; | |
1063 | ||
1064 | free_token(*tok); | |
1065 | } | |
1066 | ||
1067 | /* not reached */ | |
1068 | *tok = NULL; | |
1069 | return EVENT_NONE; | |
1070 | } | |
1071 | ||
1072 | /** | |
1073 | * pevent_read_token - access to utilites to use the pevent parser | |
1074 | * @tok: The token to return | |
1075 | * | |
1076 | * This will parse tokens from the string given by | |
1077 | * pevent_init_data(). | |
1078 | * | |
1079 | * Returns the token type. | |
1080 | */ | |
1081 | enum event_type pevent_read_token(char **tok) | |
1082 | { | |
1083 | return read_token(tok); | |
1084 | } | |
1085 | ||
1086 | /** | |
1087 | * pevent_free_token - free a token returned by pevent_read_token | |
1088 | * @token: the token to free | |
1089 | */ | |
1090 | void pevent_free_token(char *token) | |
1091 | { | |
1092 | free_token(token); | |
1093 | } | |
1094 | ||
1095 | /* no newline */ | |
1096 | static enum event_type read_token_item(char **tok) | |
1097 | { | |
1098 | enum event_type type; | |
1099 | ||
1100 | for (;;) { | |
1101 | type = __read_token(tok); | |
1102 | if (type != EVENT_SPACE && type != EVENT_NEWLINE) | |
1103 | return type; | |
1104 | free_token(*tok); | |
1105 | *tok = NULL; | |
1106 | } | |
1107 | ||
1108 | /* not reached */ | |
1109 | *tok = NULL; | |
1110 | return EVENT_NONE; | |
1111 | } | |
1112 | ||
1113 | static int test_type(enum event_type type, enum event_type expect) | |
1114 | { | |
1115 | if (type != expect) { | |
1116 | do_warning("Error: expected type %d but read %d", | |
1117 | expect, type); | |
1118 | return -1; | |
1119 | } | |
1120 | return 0; | |
1121 | } | |
1122 | ||
1123 | static int test_type_token(enum event_type type, const char *token, | |
1124 | enum event_type expect, const char *expect_tok) | |
1125 | { | |
1126 | if (type != expect) { | |
1127 | do_warning("Error: expected type %d but read %d", | |
1128 | expect, type); | |
1129 | return -1; | |
1130 | } | |
1131 | ||
1132 | if (strcmp(token, expect_tok) != 0) { | |
1133 | do_warning("Error: expected '%s' but read '%s'", | |
1134 | expect_tok, token); | |
1135 | return -1; | |
1136 | } | |
1137 | return 0; | |
1138 | } | |
1139 | ||
1140 | static int __read_expect_type(enum event_type expect, char **tok, int newline_ok) | |
1141 | { | |
1142 | enum event_type type; | |
1143 | ||
1144 | if (newline_ok) | |
1145 | type = read_token(tok); | |
1146 | else | |
1147 | type = read_token_item(tok); | |
1148 | return test_type(type, expect); | |
1149 | } | |
1150 | ||
1151 | static int read_expect_type(enum event_type expect, char **tok) | |
1152 | { | |
1153 | return __read_expect_type(expect, tok, 1); | |
1154 | } | |
1155 | ||
1156 | static int __read_expected(enum event_type expect, const char *str, | |
1157 | int newline_ok) | |
1158 | { | |
1159 | enum event_type type; | |
1160 | char *token; | |
1161 | int ret; | |
1162 | ||
1163 | if (newline_ok) | |
1164 | type = read_token(&token); | |
1165 | else | |
1166 | type = read_token_item(&token); | |
1167 | ||
1168 | ret = test_type_token(type, token, expect, str); | |
1169 | ||
1170 | free_token(token); | |
1171 | ||
1172 | return ret; | |
1173 | } | |
1174 | ||
1175 | static int read_expected(enum event_type expect, const char *str) | |
1176 | { | |
1177 | return __read_expected(expect, str, 1); | |
1178 | } | |
1179 | ||
1180 | static int read_expected_item(enum event_type expect, const char *str) | |
1181 | { | |
1182 | return __read_expected(expect, str, 0); | |
1183 | } | |
1184 | ||
1185 | static char *event_read_name(void) | |
1186 | { | |
1187 | char *token; | |
1188 | ||
1189 | if (read_expected(EVENT_ITEM, "name") < 0) | |
1190 | return NULL; | |
1191 | ||
1192 | if (read_expected(EVENT_OP, ":") < 0) | |
1193 | return NULL; | |
1194 | ||
1195 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
1196 | goto fail; | |
1197 | ||
1198 | return token; | |
1199 | ||
1200 | fail: | |
1201 | free_token(token); | |
1202 | return NULL; | |
1203 | } | |
1204 | ||
1205 | static int event_read_id(void) | |
1206 | { | |
1207 | char *token; | |
1208 | int id; | |
1209 | ||
1210 | if (read_expected_item(EVENT_ITEM, "ID") < 0) | |
1211 | return -1; | |
1212 | ||
1213 | if (read_expected(EVENT_OP, ":") < 0) | |
1214 | return -1; | |
1215 | ||
1216 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
1217 | goto fail; | |
1218 | ||
1219 | id = strtoul(token, NULL, 0); | |
1220 | free_token(token); | |
1221 | return id; | |
1222 | ||
1223 | fail: | |
1224 | free_token(token); | |
1225 | return -1; | |
1226 | } | |
1227 | ||
1228 | static int field_is_string(struct format_field *field) | |
1229 | { | |
1230 | if ((field->flags & FIELD_IS_ARRAY) && | |
1231 | (strstr(field->type, "char") || strstr(field->type, "u8") || | |
1232 | strstr(field->type, "s8"))) | |
1233 | return 1; | |
1234 | ||
1235 | return 0; | |
1236 | } | |
1237 | ||
1238 | static int field_is_dynamic(struct format_field *field) | |
1239 | { | |
1240 | if (strncmp(field->type, "__data_loc", 10) == 0) | |
1241 | return 1; | |
1242 | ||
1243 | return 0; | |
1244 | } | |
1245 | ||
1246 | static int field_is_long(struct format_field *field) | |
1247 | { | |
1248 | /* includes long long */ | |
1249 | if (strstr(field->type, "long")) | |
1250 | return 1; | |
1251 | ||
1252 | return 0; | |
1253 | } | |
1254 | ||
e23c1a55 JO |
1255 | static unsigned int type_size(const char *name) |
1256 | { | |
1257 | /* This covers all FIELD_IS_STRING types. */ | |
1258 | static struct { | |
1259 | const char *type; | |
1260 | unsigned int size; | |
1261 | } table[] = { | |
1262 | { "u8", 1 }, | |
1263 | { "u16", 2 }, | |
1264 | { "u32", 4 }, | |
1265 | { "u64", 8 }, | |
1266 | { "s8", 1 }, | |
1267 | { "s16", 2 }, | |
1268 | { "s32", 4 }, | |
1269 | { "s64", 8 }, | |
1270 | { "char", 1 }, | |
1271 | { }, | |
1272 | }; | |
1273 | int i; | |
1274 | ||
1275 | for (i = 0; table[i].type; i++) { | |
1276 | if (!strcmp(table[i].type, name)) | |
1277 | return table[i].size; | |
1278 | } | |
1279 | ||
1280 | return 0; | |
1281 | } | |
1282 | ||
f7d82350 SR |
1283 | static int event_read_fields(struct event_format *event, struct format_field **fields) |
1284 | { | |
1285 | struct format_field *field = NULL; | |
1286 | enum event_type type; | |
1287 | char *token; | |
1288 | char *last_token; | |
1289 | int count = 0; | |
1290 | ||
1291 | do { | |
e23c1a55 JO |
1292 | unsigned int size_dynamic = 0; |
1293 | ||
f7d82350 SR |
1294 | type = read_token(&token); |
1295 | if (type == EVENT_NEWLINE) { | |
1296 | free_token(token); | |
1297 | return count; | |
1298 | } | |
1299 | ||
1300 | count++; | |
1301 | ||
1302 | if (test_type_token(type, token, EVENT_ITEM, "field")) | |
1303 | goto fail; | |
1304 | free_token(token); | |
1305 | ||
1306 | type = read_token(&token); | |
1307 | /* | |
1308 | * The ftrace fields may still use the "special" name. | |
1309 | * Just ignore it. | |
1310 | */ | |
1311 | if (event->flags & EVENT_FL_ISFTRACE && | |
1312 | type == EVENT_ITEM && strcmp(token, "special") == 0) { | |
1313 | free_token(token); | |
1314 | type = read_token(&token); | |
1315 | } | |
1316 | ||
1317 | if (test_type_token(type, token, EVENT_OP, ":") < 0) | |
1318 | goto fail; | |
1319 | ||
1320 | free_token(token); | |
1321 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
1322 | goto fail; | |
1323 | ||
1324 | last_token = token; | |
1325 | ||
87162d81 ACM |
1326 | field = calloc(1, sizeof(*field)); |
1327 | if (!field) | |
1328 | goto fail; | |
1329 | ||
f7d82350 SR |
1330 | field->event = event; |
1331 | ||
1332 | /* read the rest of the type */ | |
1333 | for (;;) { | |
1334 | type = read_token(&token); | |
1335 | if (type == EVENT_ITEM || | |
1336 | (type == EVENT_OP && strcmp(token, "*") == 0) || | |
1337 | /* | |
1338 | * Some of the ftrace fields are broken and have | |
1339 | * an illegal "." in them. | |
1340 | */ | |
1341 | (event->flags & EVENT_FL_ISFTRACE && | |
1342 | type == EVENT_OP && strcmp(token, ".") == 0)) { | |
1343 | ||
1344 | if (strcmp(token, "*") == 0) | |
1345 | field->flags |= FIELD_IS_POINTER; | |
1346 | ||
1347 | if (field->type) { | |
d286447f NK |
1348 | char *new_type; |
1349 | new_type = realloc(field->type, | |
1350 | strlen(field->type) + | |
1351 | strlen(last_token) + 2); | |
1352 | if (!new_type) { | |
1353 | free(last_token); | |
1354 | goto fail; | |
1355 | } | |
1356 | field->type = new_type; | |
f7d82350 SR |
1357 | strcat(field->type, " "); |
1358 | strcat(field->type, last_token); | |
1359 | free(last_token); | |
1360 | } else | |
1361 | field->type = last_token; | |
1362 | last_token = token; | |
1363 | continue; | |
1364 | } | |
1365 | ||
1366 | break; | |
1367 | } | |
1368 | ||
1369 | if (!field->type) { | |
3388cc3e | 1370 | do_warning_event(event, "%s: no type found", __func__); |
f7d82350 SR |
1371 | goto fail; |
1372 | } | |
1373 | field->name = last_token; | |
1374 | ||
1375 | if (test_type(type, EVENT_OP)) | |
1376 | goto fail; | |
1377 | ||
1378 | if (strcmp(token, "[") == 0) { | |
1379 | enum event_type last_type = type; | |
1380 | char *brackets = token; | |
d286447f | 1381 | char *new_brackets; |
f7d82350 SR |
1382 | int len; |
1383 | ||
1384 | field->flags |= FIELD_IS_ARRAY; | |
1385 | ||
1386 | type = read_token(&token); | |
1387 | ||
1388 | if (type == EVENT_ITEM) | |
1389 | field->arraylen = strtoul(token, NULL, 0); | |
1390 | else | |
1391 | field->arraylen = 0; | |
1392 | ||
1393 | while (strcmp(token, "]") != 0) { | |
1394 | if (last_type == EVENT_ITEM && | |
1395 | type == EVENT_ITEM) | |
1396 | len = 2; | |
1397 | else | |
1398 | len = 1; | |
1399 | last_type = type; | |
1400 | ||
d286447f NK |
1401 | new_brackets = realloc(brackets, |
1402 | strlen(brackets) + | |
1403 | strlen(token) + len); | |
1404 | if (!new_brackets) { | |
1405 | free(brackets); | |
1406 | goto fail; | |
1407 | } | |
1408 | brackets = new_brackets; | |
f7d82350 SR |
1409 | if (len == 2) |
1410 | strcat(brackets, " "); | |
1411 | strcat(brackets, token); | |
1412 | /* We only care about the last token */ | |
1413 | field->arraylen = strtoul(token, NULL, 0); | |
1414 | free_token(token); | |
1415 | type = read_token(&token); | |
1416 | if (type == EVENT_NONE) { | |
3388cc3e | 1417 | do_warning_event(event, "failed to find token"); |
f7d82350 SR |
1418 | goto fail; |
1419 | } | |
1420 | } | |
1421 | ||
1422 | free_token(token); | |
1423 | ||
d286447f NK |
1424 | new_brackets = realloc(brackets, strlen(brackets) + 2); |
1425 | if (!new_brackets) { | |
1426 | free(brackets); | |
1427 | goto fail; | |
1428 | } | |
1429 | brackets = new_brackets; | |
f7d82350 SR |
1430 | strcat(brackets, "]"); |
1431 | ||
1432 | /* add brackets to type */ | |
1433 | ||
1434 | type = read_token(&token); | |
1435 | /* | |
1436 | * If the next token is not an OP, then it is of | |
1437 | * the format: type [] item; | |
1438 | */ | |
1439 | if (type == EVENT_ITEM) { | |
d286447f NK |
1440 | char *new_type; |
1441 | new_type = realloc(field->type, | |
1442 | strlen(field->type) + | |
1443 | strlen(field->name) + | |
1444 | strlen(brackets) + 2); | |
1445 | if (!new_type) { | |
1446 | free(brackets); | |
1447 | goto fail; | |
1448 | } | |
1449 | field->type = new_type; | |
f7d82350 SR |
1450 | strcat(field->type, " "); |
1451 | strcat(field->type, field->name); | |
e23c1a55 | 1452 | size_dynamic = type_size(field->name); |
f7d82350 SR |
1453 | free_token(field->name); |
1454 | strcat(field->type, brackets); | |
1455 | field->name = token; | |
1456 | type = read_token(&token); | |
1457 | } else { | |
d286447f NK |
1458 | char *new_type; |
1459 | new_type = realloc(field->type, | |
1460 | strlen(field->type) + | |
1461 | strlen(brackets) + 1); | |
1462 | if (!new_type) { | |
1463 | free(brackets); | |
1464 | goto fail; | |
1465 | } | |
1466 | field->type = new_type; | |
f7d82350 SR |
1467 | strcat(field->type, brackets); |
1468 | } | |
1469 | free(brackets); | |
1470 | } | |
1471 | ||
1472 | if (field_is_string(field)) | |
1473 | field->flags |= FIELD_IS_STRING; | |
1474 | if (field_is_dynamic(field)) | |
1475 | field->flags |= FIELD_IS_DYNAMIC; | |
1476 | if (field_is_long(field)) | |
1477 | field->flags |= FIELD_IS_LONG; | |
1478 | ||
1479 | if (test_type_token(type, token, EVENT_OP, ";")) | |
1480 | goto fail; | |
1481 | free_token(token); | |
1482 | ||
1483 | if (read_expected(EVENT_ITEM, "offset") < 0) | |
1484 | goto fail_expect; | |
1485 | ||
1486 | if (read_expected(EVENT_OP, ":") < 0) | |
1487 | goto fail_expect; | |
1488 | ||
1489 | if (read_expect_type(EVENT_ITEM, &token)) | |
1490 | goto fail; | |
1491 | field->offset = strtoul(token, NULL, 0); | |
1492 | free_token(token); | |
1493 | ||
1494 | if (read_expected(EVENT_OP, ";") < 0) | |
1495 | goto fail_expect; | |
1496 | ||
1497 | if (read_expected(EVENT_ITEM, "size") < 0) | |
1498 | goto fail_expect; | |
1499 | ||
1500 | if (read_expected(EVENT_OP, ":") < 0) | |
1501 | goto fail_expect; | |
1502 | ||
1503 | if (read_expect_type(EVENT_ITEM, &token)) | |
1504 | goto fail; | |
1505 | field->size = strtoul(token, NULL, 0); | |
1506 | free_token(token); | |
1507 | ||
1508 | if (read_expected(EVENT_OP, ";") < 0) | |
1509 | goto fail_expect; | |
1510 | ||
1511 | type = read_token(&token); | |
1512 | if (type != EVENT_NEWLINE) { | |
1513 | /* newer versions of the kernel have a "signed" type */ | |
1514 | if (test_type_token(type, token, EVENT_ITEM, "signed")) | |
1515 | goto fail; | |
1516 | ||
1517 | free_token(token); | |
1518 | ||
1519 | if (read_expected(EVENT_OP, ":") < 0) | |
1520 | goto fail_expect; | |
1521 | ||
1522 | if (read_expect_type(EVENT_ITEM, &token)) | |
1523 | goto fail; | |
1524 | ||
10ee9fa3 TZ |
1525 | if (strtoul(token, NULL, 0)) |
1526 | field->flags |= FIELD_IS_SIGNED; | |
f7d82350 SR |
1527 | |
1528 | free_token(token); | |
1529 | if (read_expected(EVENT_OP, ";") < 0) | |
1530 | goto fail_expect; | |
1531 | ||
1532 | if (read_expect_type(EVENT_NEWLINE, &token)) | |
1533 | goto fail; | |
1534 | } | |
1535 | ||
1536 | free_token(token); | |
1537 | ||
1538 | if (field->flags & FIELD_IS_ARRAY) { | |
1539 | if (field->arraylen) | |
1540 | field->elementsize = field->size / field->arraylen; | |
e23c1a55 JO |
1541 | else if (field->flags & FIELD_IS_DYNAMIC) |
1542 | field->elementsize = size_dynamic; | |
f7d82350 SR |
1543 | else if (field->flags & FIELD_IS_STRING) |
1544 | field->elementsize = 1; | |
e23c1a55 JO |
1545 | else if (field->flags & FIELD_IS_LONG) |
1546 | field->elementsize = event->pevent ? | |
1547 | event->pevent->long_size : | |
1548 | sizeof(long); | |
f7d82350 SR |
1549 | } else |
1550 | field->elementsize = field->size; | |
1551 | ||
1552 | *fields = field; | |
1553 | fields = &field->next; | |
1554 | ||
1555 | } while (1); | |
1556 | ||
1557 | return 0; | |
1558 | ||
1559 | fail: | |
1560 | free_token(token); | |
1561 | fail_expect: | |
57d34dc5 NK |
1562 | if (field) { |
1563 | free(field->type); | |
1564 | free(field->name); | |
f7d82350 | 1565 | free(field); |
57d34dc5 | 1566 | } |
f7d82350 SR |
1567 | return -1; |
1568 | } | |
1569 | ||
1570 | static int event_read_format(struct event_format *event) | |
1571 | { | |
1572 | char *token; | |
1573 | int ret; | |
1574 | ||
1575 | if (read_expected_item(EVENT_ITEM, "format") < 0) | |
1576 | return -1; | |
1577 | ||
1578 | if (read_expected(EVENT_OP, ":") < 0) | |
1579 | return -1; | |
1580 | ||
1581 | if (read_expect_type(EVENT_NEWLINE, &token)) | |
1582 | goto fail; | |
1583 | free_token(token); | |
1584 | ||
1585 | ret = event_read_fields(event, &event->format.common_fields); | |
1586 | if (ret < 0) | |
1587 | return ret; | |
1588 | event->format.nr_common = ret; | |
1589 | ||
1590 | ret = event_read_fields(event, &event->format.fields); | |
1591 | if (ret < 0) | |
1592 | return ret; | |
1593 | event->format.nr_fields = ret; | |
1594 | ||
1595 | return 0; | |
1596 | ||
1597 | fail: | |
1598 | free_token(token); | |
1599 | return -1; | |
1600 | } | |
1601 | ||
1602 | static enum event_type | |
1603 | process_arg_token(struct event_format *event, struct print_arg *arg, | |
1604 | char **tok, enum event_type type); | |
1605 | ||
1606 | static enum event_type | |
1607 | process_arg(struct event_format *event, struct print_arg *arg, char **tok) | |
1608 | { | |
1609 | enum event_type type; | |
1610 | char *token; | |
1611 | ||
1612 | type = read_token(&token); | |
1613 | *tok = token; | |
1614 | ||
1615 | return process_arg_token(event, arg, tok, type); | |
1616 | } | |
1617 | ||
1618 | static enum event_type | |
1619 | process_op(struct event_format *event, struct print_arg *arg, char **tok); | |
1620 | ||
eff2c92f SR |
1621 | /* |
1622 | * For __print_symbolic() and __print_flags, we need to completely | |
1623 | * evaluate the first argument, which defines what to print next. | |
1624 | */ | |
1625 | static enum event_type | |
1626 | process_field_arg(struct event_format *event, struct print_arg *arg, char **tok) | |
1627 | { | |
1628 | enum event_type type; | |
1629 | ||
1630 | type = process_arg(event, arg, tok); | |
1631 | ||
1632 | while (type == EVENT_OP) { | |
1633 | type = process_op(event, arg, tok); | |
1634 | } | |
1635 | ||
1636 | return type; | |
1637 | } | |
1638 | ||
f7d82350 SR |
1639 | static enum event_type |
1640 | process_cond(struct event_format *event, struct print_arg *top, char **tok) | |
1641 | { | |
1642 | struct print_arg *arg, *left, *right; | |
1643 | enum event_type type; | |
1644 | char *token = NULL; | |
1645 | ||
1646 | arg = alloc_arg(); | |
1647 | left = alloc_arg(); | |
1648 | right = alloc_arg(); | |
1649 | ||
b1ac754b | 1650 | if (!arg || !left || !right) { |
3388cc3e | 1651 | do_warning_event(event, "%s: not enough memory!", __func__); |
b1ac754b NK |
1652 | /* arg will be freed at out_free */ |
1653 | free_arg(left); | |
1654 | free_arg(right); | |
1655 | goto out_free; | |
1656 | } | |
1657 | ||
f7d82350 SR |
1658 | arg->type = PRINT_OP; |
1659 | arg->op.left = left; | |
1660 | arg->op.right = right; | |
1661 | ||
1662 | *tok = NULL; | |
1663 | type = process_arg(event, left, &token); | |
1664 | ||
1665 | again: | |
1666 | /* Handle other operations in the arguments */ | |
1667 | if (type == EVENT_OP && strcmp(token, ":") != 0) { | |
1668 | type = process_op(event, left, &token); | |
1669 | goto again; | |
1670 | } | |
1671 | ||
1672 | if (test_type_token(type, token, EVENT_OP, ":")) | |
1673 | goto out_free; | |
1674 | ||
1675 | arg->op.op = token; | |
1676 | ||
1677 | type = process_arg(event, right, &token); | |
1678 | ||
1679 | top->op.right = arg; | |
1680 | ||
1681 | *tok = token; | |
1682 | return type; | |
1683 | ||
1684 | out_free: | |
1685 | /* Top may point to itself */ | |
1686 | top->op.right = NULL; | |
1687 | free_token(token); | |
1688 | free_arg(arg); | |
1689 | return EVENT_ERROR; | |
1690 | } | |
1691 | ||
1692 | static enum event_type | |
1693 | process_array(struct event_format *event, struct print_arg *top, char **tok) | |
1694 | { | |
1695 | struct print_arg *arg; | |
1696 | enum event_type type; | |
1697 | char *token = NULL; | |
1698 | ||
1699 | arg = alloc_arg(); | |
b1ac754b | 1700 | if (!arg) { |
3388cc3e | 1701 | do_warning_event(event, "%s: not enough memory!", __func__); |
b1ac754b NK |
1702 | /* '*tok' is set to top->op.op. No need to free. */ |
1703 | *tok = NULL; | |
1704 | return EVENT_ERROR; | |
1705 | } | |
f7d82350 SR |
1706 | |
1707 | *tok = NULL; | |
1708 | type = process_arg(event, arg, &token); | |
1709 | if (test_type_token(type, token, EVENT_OP, "]")) | |
1710 | goto out_free; | |
1711 | ||
1712 | top->op.right = arg; | |
1713 | ||
1714 | free_token(token); | |
1715 | type = read_token_item(&token); | |
1716 | *tok = token; | |
1717 | ||
1718 | return type; | |
1719 | ||
1720 | out_free: | |
1bce6e0f | 1721 | free_token(token); |
f7d82350 SR |
1722 | free_arg(arg); |
1723 | return EVENT_ERROR; | |
1724 | } | |
1725 | ||
1726 | static int get_op_prio(char *op) | |
1727 | { | |
1728 | if (!op[1]) { | |
1729 | switch (op[0]) { | |
1730 | case '~': | |
1731 | case '!': | |
1732 | return 4; | |
1733 | case '*': | |
1734 | case '/': | |
1735 | case '%': | |
1736 | return 6; | |
1737 | case '+': | |
1738 | case '-': | |
1739 | return 7; | |
1740 | /* '>>' and '<<' are 8 */ | |
1741 | case '<': | |
1742 | case '>': | |
1743 | return 9; | |
1744 | /* '==' and '!=' are 10 */ | |
1745 | case '&': | |
1746 | return 11; | |
1747 | case '^': | |
1748 | return 12; | |
1749 | case '|': | |
1750 | return 13; | |
1751 | case '?': | |
1752 | return 16; | |
1753 | default: | |
14ffde0e | 1754 | do_warning("unknown op '%c'", op[0]); |
f7d82350 SR |
1755 | return -1; |
1756 | } | |
1757 | } else { | |
1758 | if (strcmp(op, "++") == 0 || | |
1759 | strcmp(op, "--") == 0) { | |
1760 | return 3; | |
1761 | } else if (strcmp(op, ">>") == 0 || | |
1762 | strcmp(op, "<<") == 0) { | |
1763 | return 8; | |
1764 | } else if (strcmp(op, ">=") == 0 || | |
1765 | strcmp(op, "<=") == 0) { | |
1766 | return 9; | |
1767 | } else if (strcmp(op, "==") == 0 || | |
1768 | strcmp(op, "!=") == 0) { | |
1769 | return 10; | |
1770 | } else if (strcmp(op, "&&") == 0) { | |
1771 | return 14; | |
1772 | } else if (strcmp(op, "||") == 0) { | |
1773 | return 15; | |
1774 | } else { | |
14ffde0e | 1775 | do_warning("unknown op '%s'", op); |
f7d82350 SR |
1776 | return -1; |
1777 | } | |
1778 | } | |
1779 | } | |
1780 | ||
14ffde0e | 1781 | static int set_op_prio(struct print_arg *arg) |
f7d82350 SR |
1782 | { |
1783 | ||
1784 | /* single ops are the greatest */ | |
14ffde0e | 1785 | if (!arg->op.left || arg->op.left->type == PRINT_NULL) |
f7d82350 | 1786 | arg->op.prio = 0; |
14ffde0e VN |
1787 | else |
1788 | arg->op.prio = get_op_prio(arg->op.op); | |
f7d82350 | 1789 | |
14ffde0e | 1790 | return arg->op.prio; |
f7d82350 SR |
1791 | } |
1792 | ||
1793 | /* Note, *tok does not get freed, but will most likely be saved */ | |
1794 | static enum event_type | |
1795 | process_op(struct event_format *event, struct print_arg *arg, char **tok) | |
1796 | { | |
1797 | struct print_arg *left, *right = NULL; | |
1798 | enum event_type type; | |
1799 | char *token; | |
1800 | ||
1801 | /* the op is passed in via tok */ | |
1802 | token = *tok; | |
1803 | ||
1804 | if (arg->type == PRINT_OP && !arg->op.left) { | |
1805 | /* handle single op */ | |
1806 | if (token[1]) { | |
3388cc3e | 1807 | do_warning_event(event, "bad op token %s", token); |
f7d82350 SR |
1808 | goto out_free; |
1809 | } | |
1810 | switch (token[0]) { | |
1811 | case '~': | |
1812 | case '!': | |
1813 | case '+': | |
1814 | case '-': | |
1815 | break; | |
1816 | default: | |
3388cc3e | 1817 | do_warning_event(event, "bad op token %s", token); |
f7d82350 SR |
1818 | goto out_free; |
1819 | ||
1820 | } | |
1821 | ||
1822 | /* make an empty left */ | |
1823 | left = alloc_arg(); | |
b1ac754b NK |
1824 | if (!left) |
1825 | goto out_warn_free; | |
1826 | ||
f7d82350 SR |
1827 | left->type = PRINT_NULL; |
1828 | arg->op.left = left; | |
1829 | ||
1830 | right = alloc_arg(); | |
b1ac754b NK |
1831 | if (!right) |
1832 | goto out_warn_free; | |
1833 | ||
f7d82350 SR |
1834 | arg->op.right = right; |
1835 | ||
1836 | /* do not free the token, it belongs to an op */ | |
1837 | *tok = NULL; | |
1838 | type = process_arg(event, right, tok); | |
1839 | ||
1840 | } else if (strcmp(token, "?") == 0) { | |
1841 | ||
1842 | left = alloc_arg(); | |
b1ac754b NK |
1843 | if (!left) |
1844 | goto out_warn_free; | |
1845 | ||
f7d82350 SR |
1846 | /* copy the top arg to the left */ |
1847 | *left = *arg; | |
1848 | ||
1849 | arg->type = PRINT_OP; | |
1850 | arg->op.op = token; | |
1851 | arg->op.left = left; | |
1852 | arg->op.prio = 0; | |
1853 | ||
41e51a28 | 1854 | /* it will set arg->op.right */ |
f7d82350 SR |
1855 | type = process_cond(event, arg, tok); |
1856 | ||
1857 | } else if (strcmp(token, ">>") == 0 || | |
1858 | strcmp(token, "<<") == 0 || | |
1859 | strcmp(token, "&") == 0 || | |
1860 | strcmp(token, "|") == 0 || | |
1861 | strcmp(token, "&&") == 0 || | |
1862 | strcmp(token, "||") == 0 || | |
1863 | strcmp(token, "-") == 0 || | |
1864 | strcmp(token, "+") == 0 || | |
1865 | strcmp(token, "*") == 0 || | |
1866 | strcmp(token, "^") == 0 || | |
1867 | strcmp(token, "/") == 0 || | |
1868 | strcmp(token, "<") == 0 || | |
1869 | strcmp(token, ">") == 0 || | |
ff582680 NK |
1870 | strcmp(token, "<=") == 0 || |
1871 | strcmp(token, ">=") == 0 || | |
f7d82350 SR |
1872 | strcmp(token, "==") == 0 || |
1873 | strcmp(token, "!=") == 0) { | |
1874 | ||
1875 | left = alloc_arg(); | |
b1ac754b NK |
1876 | if (!left) |
1877 | goto out_warn_free; | |
f7d82350 SR |
1878 | |
1879 | /* copy the top arg to the left */ | |
1880 | *left = *arg; | |
1881 | ||
1882 | arg->type = PRINT_OP; | |
1883 | arg->op.op = token; | |
1884 | arg->op.left = left; | |
41e51a28 | 1885 | arg->op.right = NULL; |
f7d82350 | 1886 | |
14ffde0e VN |
1887 | if (set_op_prio(arg) == -1) { |
1888 | event->flags |= EVENT_FL_FAILED; | |
d1de1087 NK |
1889 | /* arg->op.op (= token) will be freed at out_free */ |
1890 | arg->op.op = NULL; | |
14ffde0e VN |
1891 | goto out_free; |
1892 | } | |
f7d82350 SR |
1893 | |
1894 | type = read_token_item(&token); | |
1895 | *tok = token; | |
1896 | ||
1897 | /* could just be a type pointer */ | |
1898 | if ((strcmp(arg->op.op, "*") == 0) && | |
1899 | type == EVENT_DELIM && (strcmp(token, ")") == 0)) { | |
d286447f NK |
1900 | char *new_atom; |
1901 | ||
a6d2a61a | 1902 | if (left->type != PRINT_ATOM) { |
3388cc3e | 1903 | do_warning_event(event, "bad pointer type"); |
a6d2a61a ACM |
1904 | goto out_free; |
1905 | } | |
d286447f | 1906 | new_atom = realloc(left->atom.atom, |
f7d82350 | 1907 | strlen(left->atom.atom) + 3); |
d286447f | 1908 | if (!new_atom) |
b1ac754b | 1909 | goto out_warn_free; |
d286447f NK |
1910 | |
1911 | left->atom.atom = new_atom; | |
f7d82350 SR |
1912 | strcat(left->atom.atom, " *"); |
1913 | free(arg->op.op); | |
1914 | *arg = *left; | |
1915 | free(left); | |
1916 | ||
1917 | return type; | |
1918 | } | |
1919 | ||
1920 | right = alloc_arg(); | |
b1ac754b NK |
1921 | if (!right) |
1922 | goto out_warn_free; | |
1923 | ||
f7d82350 SR |
1924 | type = process_arg_token(event, right, tok, type); |
1925 | arg->op.right = right; | |
1926 | ||
1927 | } else if (strcmp(token, "[") == 0) { | |
1928 | ||
1929 | left = alloc_arg(); | |
b1ac754b NK |
1930 | if (!left) |
1931 | goto out_warn_free; | |
1932 | ||
f7d82350 SR |
1933 | *left = *arg; |
1934 | ||
1935 | arg->type = PRINT_OP; | |
1936 | arg->op.op = token; | |
1937 | arg->op.left = left; | |
1938 | ||
1939 | arg->op.prio = 0; | |
1940 | ||
41e51a28 | 1941 | /* it will set arg->op.right */ |
f7d82350 SR |
1942 | type = process_array(event, arg, tok); |
1943 | ||
1944 | } else { | |
3388cc3e | 1945 | do_warning_event(event, "unknown op '%s'", token); |
f7d82350 SR |
1946 | event->flags |= EVENT_FL_FAILED; |
1947 | /* the arg is now the left side */ | |
1948 | goto out_free; | |
1949 | } | |
1950 | ||
1951 | if (type == EVENT_OP && strcmp(*tok, ":") != 0) { | |
1952 | int prio; | |
1953 | ||
1954 | /* higher prios need to be closer to the root */ | |
1955 | prio = get_op_prio(*tok); | |
1956 | ||
1957 | if (prio > arg->op.prio) | |
1958 | return process_op(event, arg, tok); | |
1959 | ||
1960 | return process_op(event, right, tok); | |
1961 | } | |
1962 | ||
1963 | return type; | |
1964 | ||
b1ac754b | 1965 | out_warn_free: |
3388cc3e | 1966 | do_warning_event(event, "%s: not enough memory!", __func__); |
b1ac754b | 1967 | out_free: |
f7d82350 SR |
1968 | free_token(token); |
1969 | *tok = NULL; | |
1970 | return EVENT_ERROR; | |
1971 | } | |
1972 | ||
1973 | static enum event_type | |
1d037ca1 | 1974 | process_entry(struct event_format *event __maybe_unused, struct print_arg *arg, |
f7d82350 SR |
1975 | char **tok) |
1976 | { | |
1977 | enum event_type type; | |
1978 | char *field; | |
1979 | char *token; | |
1980 | ||
1981 | if (read_expected(EVENT_OP, "->") < 0) | |
1982 | goto out_err; | |
1983 | ||
1984 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
1985 | goto out_free; | |
1986 | field = token; | |
1987 | ||
1988 | arg->type = PRINT_FIELD; | |
1989 | arg->field.name = field; | |
1990 | ||
5205aec9 TZ |
1991 | if (is_flag_field) { |
1992 | arg->field.field = pevent_find_any_field(event, arg->field.name); | |
1993 | arg->field.field->flags |= FIELD_IS_FLAG; | |
1994 | is_flag_field = 0; | |
1995 | } else if (is_symbolic_field) { | |
1996 | arg->field.field = pevent_find_any_field(event, arg->field.name); | |
1997 | arg->field.field->flags |= FIELD_IS_SYMBOLIC; | |
1998 | is_symbolic_field = 0; | |
1999 | } | |
2000 | ||
f7d82350 SR |
2001 | type = read_token(&token); |
2002 | *tok = token; | |
2003 | ||
2004 | return type; | |
2005 | ||
2006 | out_free: | |
2007 | free_token(token); | |
2008 | out_err: | |
2009 | *tok = NULL; | |
2010 | return EVENT_ERROR; | |
2011 | } | |
2012 | ||
2013 | static char *arg_eval (struct print_arg *arg); | |
2014 | ||
2015 | static unsigned long long | |
2016 | eval_type_str(unsigned long long val, const char *type, int pointer) | |
2017 | { | |
2018 | int sign = 0; | |
2019 | char *ref; | |
2020 | int len; | |
2021 | ||
2022 | len = strlen(type); | |
2023 | ||
2024 | if (pointer) { | |
2025 | ||
2026 | if (type[len-1] != '*') { | |
2027 | do_warning("pointer expected with non pointer type"); | |
2028 | return val; | |
2029 | } | |
2030 | ||
a6d2a61a ACM |
2031 | ref = malloc(len); |
2032 | if (!ref) { | |
2033 | do_warning("%s: not enough memory!", __func__); | |
2034 | return val; | |
2035 | } | |
f7d82350 SR |
2036 | memcpy(ref, type, len); |
2037 | ||
2038 | /* chop off the " *" */ | |
2039 | ref[len - 2] = 0; | |
2040 | ||
2041 | val = eval_type_str(val, ref, 0); | |
2042 | free(ref); | |
2043 | return val; | |
2044 | } | |
2045 | ||
2046 | /* check if this is a pointer */ | |
2047 | if (type[len - 1] == '*') | |
2048 | return val; | |
2049 | ||
2050 | /* Try to figure out the arg size*/ | |
2051 | if (strncmp(type, "struct", 6) == 0) | |
2052 | /* all bets off */ | |
2053 | return val; | |
2054 | ||
2055 | if (strcmp(type, "u8") == 0) | |
2056 | return val & 0xff; | |
2057 | ||
2058 | if (strcmp(type, "u16") == 0) | |
2059 | return val & 0xffff; | |
2060 | ||
2061 | if (strcmp(type, "u32") == 0) | |
2062 | return val & 0xffffffff; | |
2063 | ||
2064 | if (strcmp(type, "u64") == 0 || | |
2065 | strcmp(type, "s64")) | |
2066 | return val; | |
2067 | ||
2068 | if (strcmp(type, "s8") == 0) | |
2069 | return (unsigned long long)(char)val & 0xff; | |
2070 | ||
2071 | if (strcmp(type, "s16") == 0) | |
2072 | return (unsigned long long)(short)val & 0xffff; | |
2073 | ||
2074 | if (strcmp(type, "s32") == 0) | |
2075 | return (unsigned long long)(int)val & 0xffffffff; | |
2076 | ||
2077 | if (strncmp(type, "unsigned ", 9) == 0) { | |
2078 | sign = 0; | |
2079 | type += 9; | |
2080 | } | |
2081 | ||
2082 | if (strcmp(type, "char") == 0) { | |
2083 | if (sign) | |
2084 | return (unsigned long long)(char)val & 0xff; | |
2085 | else | |
2086 | return val & 0xff; | |
2087 | } | |
2088 | ||
2089 | if (strcmp(type, "short") == 0) { | |
2090 | if (sign) | |
2091 | return (unsigned long long)(short)val & 0xffff; | |
2092 | else | |
2093 | return val & 0xffff; | |
2094 | } | |
2095 | ||
2096 | if (strcmp(type, "int") == 0) { | |
2097 | if (sign) | |
2098 | return (unsigned long long)(int)val & 0xffffffff; | |
2099 | else | |
2100 | return val & 0xffffffff; | |
2101 | } | |
2102 | ||
2103 | return val; | |
2104 | } | |
2105 | ||
2106 | /* | |
2107 | * Try to figure out the type. | |
2108 | */ | |
2109 | static unsigned long long | |
2110 | eval_type(unsigned long long val, struct print_arg *arg, int pointer) | |
2111 | { | |
a6d2a61a ACM |
2112 | if (arg->type != PRINT_TYPE) { |
2113 | do_warning("expected type argument"); | |
2114 | return 0; | |
2115 | } | |
f7d82350 SR |
2116 | |
2117 | return eval_type_str(val, arg->typecast.type, pointer); | |
2118 | } | |
2119 | ||
d69afed5 | 2120 | static int arg_num_eval(struct print_arg *arg, long long *val) |
f7d82350 SR |
2121 | { |
2122 | long long left, right; | |
d69afed5 | 2123 | int ret = 1; |
f7d82350 SR |
2124 | |
2125 | switch (arg->type) { | |
2126 | case PRINT_ATOM: | |
d69afed5 | 2127 | *val = strtoll(arg->atom.atom, NULL, 0); |
f7d82350 SR |
2128 | break; |
2129 | case PRINT_TYPE: | |
d69afed5 VN |
2130 | ret = arg_num_eval(arg->typecast.item, val); |
2131 | if (!ret) | |
2132 | break; | |
2133 | *val = eval_type(*val, arg, 0); | |
f7d82350 SR |
2134 | break; |
2135 | case PRINT_OP: | |
2136 | switch (arg->op.op[0]) { | |
2137 | case '|': | |
d69afed5 VN |
2138 | ret = arg_num_eval(arg->op.left, &left); |
2139 | if (!ret) | |
2140 | break; | |
2141 | ret = arg_num_eval(arg->op.right, &right); | |
2142 | if (!ret) | |
2143 | break; | |
f7d82350 | 2144 | if (arg->op.op[1]) |
d69afed5 | 2145 | *val = left || right; |
f7d82350 | 2146 | else |
d69afed5 | 2147 | *val = left | right; |
f7d82350 SR |
2148 | break; |
2149 | case '&': | |
d69afed5 VN |
2150 | ret = arg_num_eval(arg->op.left, &left); |
2151 | if (!ret) | |
2152 | break; | |
2153 | ret = arg_num_eval(arg->op.right, &right); | |
2154 | if (!ret) | |
2155 | break; | |
f7d82350 | 2156 | if (arg->op.op[1]) |
d69afed5 | 2157 | *val = left && right; |
f7d82350 | 2158 | else |
d69afed5 | 2159 | *val = left & right; |
f7d82350 SR |
2160 | break; |
2161 | case '<': | |
d69afed5 VN |
2162 | ret = arg_num_eval(arg->op.left, &left); |
2163 | if (!ret) | |
2164 | break; | |
2165 | ret = arg_num_eval(arg->op.right, &right); | |
2166 | if (!ret) | |
2167 | break; | |
f7d82350 SR |
2168 | switch (arg->op.op[1]) { |
2169 | case 0: | |
d69afed5 | 2170 | *val = left < right; |
f7d82350 SR |
2171 | break; |
2172 | case '<': | |
d69afed5 | 2173 | *val = left << right; |
f7d82350 SR |
2174 | break; |
2175 | case '=': | |
d69afed5 | 2176 | *val = left <= right; |
f7d82350 SR |
2177 | break; |
2178 | default: | |
d69afed5 VN |
2179 | do_warning("unknown op '%s'", arg->op.op); |
2180 | ret = 0; | |
f7d82350 SR |
2181 | } |
2182 | break; | |
2183 | case '>': | |
d69afed5 VN |
2184 | ret = arg_num_eval(arg->op.left, &left); |
2185 | if (!ret) | |
2186 | break; | |
2187 | ret = arg_num_eval(arg->op.right, &right); | |
2188 | if (!ret) | |
2189 | break; | |
f7d82350 SR |
2190 | switch (arg->op.op[1]) { |
2191 | case 0: | |
d69afed5 | 2192 | *val = left > right; |
f7d82350 SR |
2193 | break; |
2194 | case '>': | |
d69afed5 | 2195 | *val = left >> right; |
f7d82350 SR |
2196 | break; |
2197 | case '=': | |
d69afed5 | 2198 | *val = left >= right; |
f7d82350 SR |
2199 | break; |
2200 | default: | |
d69afed5 VN |
2201 | do_warning("unknown op '%s'", arg->op.op); |
2202 | ret = 0; | |
f7d82350 SR |
2203 | } |
2204 | break; | |
2205 | case '=': | |
d69afed5 VN |
2206 | ret = arg_num_eval(arg->op.left, &left); |
2207 | if (!ret) | |
2208 | break; | |
2209 | ret = arg_num_eval(arg->op.right, &right); | |
2210 | if (!ret) | |
2211 | break; | |
f7d82350 | 2212 | |
d69afed5 VN |
2213 | if (arg->op.op[1] != '=') { |
2214 | do_warning("unknown op '%s'", arg->op.op); | |
2215 | ret = 0; | |
2216 | } else | |
2217 | *val = left == right; | |
f7d82350 SR |
2218 | break; |
2219 | case '!': | |
d69afed5 VN |
2220 | ret = arg_num_eval(arg->op.left, &left); |
2221 | if (!ret) | |
2222 | break; | |
2223 | ret = arg_num_eval(arg->op.right, &right); | |
2224 | if (!ret) | |
2225 | break; | |
f7d82350 SR |
2226 | |
2227 | switch (arg->op.op[1]) { | |
2228 | case '=': | |
d69afed5 | 2229 | *val = left != right; |
f7d82350 SR |
2230 | break; |
2231 | default: | |
d69afed5 VN |
2232 | do_warning("unknown op '%s'", arg->op.op); |
2233 | ret = 0; | |
f7d82350 SR |
2234 | } |
2235 | break; | |
2236 | case '-': | |
2237 | /* check for negative */ | |
2238 | if (arg->op.left->type == PRINT_NULL) | |
2239 | left = 0; | |
2240 | else | |
d69afed5 VN |
2241 | ret = arg_num_eval(arg->op.left, &left); |
2242 | if (!ret) | |
2243 | break; | |
2244 | ret = arg_num_eval(arg->op.right, &right); | |
2245 | if (!ret) | |
2246 | break; | |
2247 | *val = left - right; | |
f7d82350 | 2248 | break; |
b4828598 VN |
2249 | case '+': |
2250 | if (arg->op.left->type == PRINT_NULL) | |
2251 | left = 0; | |
2252 | else | |
2253 | ret = arg_num_eval(arg->op.left, &left); | |
2254 | if (!ret) | |
2255 | break; | |
2256 | ret = arg_num_eval(arg->op.right, &right); | |
2257 | if (!ret) | |
2258 | break; | |
2259 | *val = left + right; | |
2260 | break; | |
f7d82350 | 2261 | default: |
d69afed5 VN |
2262 | do_warning("unknown op '%s'", arg->op.op); |
2263 | ret = 0; | |
f7d82350 SR |
2264 | } |
2265 | break; | |
2266 | ||
2267 | case PRINT_NULL: | |
2268 | case PRINT_FIELD ... PRINT_SYMBOL: | |
2269 | case PRINT_STRING: | |
2270 | case PRINT_BSTRING: | |
2271 | default: | |
d69afed5 VN |
2272 | do_warning("invalid eval type %d", arg->type); |
2273 | ret = 0; | |
f7d82350 SR |
2274 | |
2275 | } | |
d69afed5 | 2276 | return ret; |
f7d82350 SR |
2277 | } |
2278 | ||
2279 | static char *arg_eval (struct print_arg *arg) | |
2280 | { | |
2281 | long long val; | |
2282 | static char buf[20]; | |
2283 | ||
2284 | switch (arg->type) { | |
2285 | case PRINT_ATOM: | |
2286 | return arg->atom.atom; | |
2287 | case PRINT_TYPE: | |
2288 | return arg_eval(arg->typecast.item); | |
2289 | case PRINT_OP: | |
d69afed5 VN |
2290 | if (!arg_num_eval(arg, &val)) |
2291 | break; | |
f7d82350 SR |
2292 | sprintf(buf, "%lld", val); |
2293 | return buf; | |
2294 | ||
2295 | case PRINT_NULL: | |
2296 | case PRINT_FIELD ... PRINT_SYMBOL: | |
2297 | case PRINT_STRING: | |
2298 | case PRINT_BSTRING: | |
2299 | default: | |
a6d2a61a | 2300 | do_warning("invalid eval type %d", arg->type); |
f7d82350 SR |
2301 | break; |
2302 | } | |
2303 | ||
2304 | return NULL; | |
2305 | } | |
2306 | ||
2307 | static enum event_type | |
2308 | process_fields(struct event_format *event, struct print_flag_sym **list, char **tok) | |
2309 | { | |
2310 | enum event_type type; | |
2311 | struct print_arg *arg = NULL; | |
2312 | struct print_flag_sym *field; | |
2313 | char *token = *tok; | |
2314 | char *value; | |
2315 | ||
2316 | do { | |
2317 | free_token(token); | |
2318 | type = read_token_item(&token); | |
2319 | if (test_type_token(type, token, EVENT_OP, "{")) | |
2320 | break; | |
2321 | ||
2322 | arg = alloc_arg(); | |
b1ac754b NK |
2323 | if (!arg) |
2324 | goto out_free; | |
f7d82350 SR |
2325 | |
2326 | free_token(token); | |
2327 | type = process_arg(event, arg, &token); | |
00b9da72 SH |
2328 | |
2329 | if (type == EVENT_OP) | |
2330 | type = process_op(event, arg, &token); | |
2331 | ||
2332 | if (type == EVENT_ERROR) | |
2333 | goto out_free; | |
2334 | ||
f7d82350 SR |
2335 | if (test_type_token(type, token, EVENT_DELIM, ",")) |
2336 | goto out_free; | |
2337 | ||
87162d81 ACM |
2338 | field = calloc(1, sizeof(*field)); |
2339 | if (!field) | |
2340 | goto out_free; | |
f7d82350 SR |
2341 | |
2342 | value = arg_eval(arg); | |
d69afed5 | 2343 | if (value == NULL) |
f8c49d26 | 2344 | goto out_free_field; |
f7d82350 | 2345 | field->value = strdup(value); |
ca63858e | 2346 | if (field->value == NULL) |
f8c49d26 | 2347 | goto out_free_field; |
f7d82350 SR |
2348 | |
2349 | free_arg(arg); | |
2350 | arg = alloc_arg(); | |
b1ac754b NK |
2351 | if (!arg) |
2352 | goto out_free; | |
f7d82350 SR |
2353 | |
2354 | free_token(token); | |
2355 | type = process_arg(event, arg, &token); | |
2356 | if (test_type_token(type, token, EVENT_OP, "}")) | |
f8c49d26 | 2357 | goto out_free_field; |
f7d82350 SR |
2358 | |
2359 | value = arg_eval(arg); | |
d69afed5 | 2360 | if (value == NULL) |
f8c49d26 | 2361 | goto out_free_field; |
f7d82350 | 2362 | field->str = strdup(value); |
ca63858e | 2363 | if (field->str == NULL) |
f8c49d26 | 2364 | goto out_free_field; |
f7d82350 SR |
2365 | free_arg(arg); |
2366 | arg = NULL; | |
2367 | ||
2368 | *list = field; | |
2369 | list = &field->next; | |
2370 | ||
2371 | free_token(token); | |
2372 | type = read_token_item(&token); | |
2373 | } while (type == EVENT_DELIM && strcmp(token, ",") == 0); | |
2374 | ||
2375 | *tok = token; | |
2376 | return type; | |
2377 | ||
f8c49d26 NK |
2378 | out_free_field: |
2379 | free_flag_sym(field); | |
f7d82350 SR |
2380 | out_free: |
2381 | free_arg(arg); | |
2382 | free_token(token); | |
2383 | *tok = NULL; | |
2384 | ||
2385 | return EVENT_ERROR; | |
2386 | } | |
2387 | ||
2388 | static enum event_type | |
2389 | process_flags(struct event_format *event, struct print_arg *arg, char **tok) | |
2390 | { | |
2391 | struct print_arg *field; | |
2392 | enum event_type type; | |
2393 | char *token; | |
2394 | ||
2395 | memset(arg, 0, sizeof(*arg)); | |
2396 | arg->type = PRINT_FLAGS; | |
2397 | ||
2398 | field = alloc_arg(); | |
b1ac754b | 2399 | if (!field) { |
3388cc3e | 2400 | do_warning_event(event, "%s: not enough memory!", __func__); |
b1ac754b NK |
2401 | goto out_free; |
2402 | } | |
f7d82350 | 2403 | |
eff2c92f | 2404 | type = process_field_arg(event, field, &token); |
f7d82350 SR |
2405 | |
2406 | /* Handle operations in the first argument */ | |
2407 | while (type == EVENT_OP) | |
2408 | type = process_op(event, field, &token); | |
2409 | ||
2410 | if (test_type_token(type, token, EVENT_DELIM, ",")) | |
70d93044 | 2411 | goto out_free_field; |
f7d82350 SR |
2412 | free_token(token); |
2413 | ||
2414 | arg->flags.field = field; | |
2415 | ||
2416 | type = read_token_item(&token); | |
2417 | if (event_item_type(type)) { | |
2418 | arg->flags.delim = token; | |
2419 | type = read_token_item(&token); | |
2420 | } | |
2421 | ||
2422 | if (test_type_token(type, token, EVENT_DELIM, ",")) | |
2423 | goto out_free; | |
2424 | ||
2425 | type = process_fields(event, &arg->flags.flags, &token); | |
2426 | if (test_type_token(type, token, EVENT_DELIM, ")")) | |
2427 | goto out_free; | |
2428 | ||
2429 | free_token(token); | |
2430 | type = read_token_item(tok); | |
2431 | return type; | |
2432 | ||
70d93044 NK |
2433 | out_free_field: |
2434 | free_arg(field); | |
2435 | out_free: | |
f7d82350 SR |
2436 | free_token(token); |
2437 | *tok = NULL; | |
2438 | return EVENT_ERROR; | |
2439 | } | |
2440 | ||
2441 | static enum event_type | |
2442 | process_symbols(struct event_format *event, struct print_arg *arg, char **tok) | |
2443 | { | |
2444 | struct print_arg *field; | |
2445 | enum event_type type; | |
2446 | char *token; | |
2447 | ||
2448 | memset(arg, 0, sizeof(*arg)); | |
2449 | arg->type = PRINT_SYMBOL; | |
2450 | ||
2451 | field = alloc_arg(); | |
b1ac754b | 2452 | if (!field) { |
3388cc3e | 2453 | do_warning_event(event, "%s: not enough memory!", __func__); |
b1ac754b NK |
2454 | goto out_free; |
2455 | } | |
f7d82350 | 2456 | |
eff2c92f SR |
2457 | type = process_field_arg(event, field, &token); |
2458 | ||
f7d82350 | 2459 | if (test_type_token(type, token, EVENT_DELIM, ",")) |
70d93044 | 2460 | goto out_free_field; |
f7d82350 SR |
2461 | |
2462 | arg->symbol.field = field; | |
2463 | ||
2464 | type = process_fields(event, &arg->symbol.symbols, &token); | |
2465 | if (test_type_token(type, token, EVENT_DELIM, ")")) | |
2466 | goto out_free; | |
2467 | ||
2468 | free_token(token); | |
2469 | type = read_token_item(tok); | |
2470 | return type; | |
2471 | ||
70d93044 NK |
2472 | out_free_field: |
2473 | free_arg(field); | |
2474 | out_free: | |
f7d82350 SR |
2475 | free_token(token); |
2476 | *tok = NULL; | |
2477 | return EVENT_ERROR; | |
2478 | } | |
2479 | ||
e080e6f1 NK |
2480 | static enum event_type |
2481 | process_hex(struct event_format *event, struct print_arg *arg, char **tok) | |
2482 | { | |
2483 | struct print_arg *field; | |
2484 | enum event_type type; | |
2485 | char *token; | |
2486 | ||
2487 | memset(arg, 0, sizeof(*arg)); | |
2488 | arg->type = PRINT_HEX; | |
2489 | ||
2490 | field = alloc_arg(); | |
b1ac754b | 2491 | if (!field) { |
3388cc3e | 2492 | do_warning_event(event, "%s: not enough memory!", __func__); |
b1ac754b NK |
2493 | goto out_free; |
2494 | } | |
2495 | ||
e080e6f1 NK |
2496 | type = process_arg(event, field, &token); |
2497 | ||
2498 | if (test_type_token(type, token, EVENT_DELIM, ",")) | |
2499 | goto out_free; | |
2500 | ||
2501 | arg->hex.field = field; | |
2502 | ||
2503 | free_token(token); | |
2504 | ||
2505 | field = alloc_arg(); | |
b1ac754b | 2506 | if (!field) { |
3388cc3e | 2507 | do_warning_event(event, "%s: not enough memory!", __func__); |
b1ac754b NK |
2508 | *tok = NULL; |
2509 | return EVENT_ERROR; | |
2510 | } | |
2511 | ||
e080e6f1 NK |
2512 | type = process_arg(event, field, &token); |
2513 | ||
2514 | if (test_type_token(type, token, EVENT_DELIM, ")")) | |
2515 | goto out_free; | |
2516 | ||
2517 | arg->hex.size = field; | |
2518 | ||
2519 | free_token(token); | |
2520 | type = read_token_item(tok); | |
2521 | return type; | |
2522 | ||
2523 | out_free: | |
2524 | free_arg(field); | |
2525 | free_token(token); | |
2526 | *tok = NULL; | |
2527 | return EVENT_ERROR; | |
2528 | } | |
2529 | ||
f7d82350 SR |
2530 | static enum event_type |
2531 | process_dynamic_array(struct event_format *event, struct print_arg *arg, char **tok) | |
2532 | { | |
2533 | struct format_field *field; | |
2534 | enum event_type type; | |
2535 | char *token; | |
2536 | ||
2537 | memset(arg, 0, sizeof(*arg)); | |
2538 | arg->type = PRINT_DYNAMIC_ARRAY; | |
2539 | ||
2540 | /* | |
2541 | * The item within the parenthesis is another field that holds | |
2542 | * the index into where the array starts. | |
2543 | */ | |
2544 | type = read_token(&token); | |
2545 | *tok = token; | |
2546 | if (type != EVENT_ITEM) | |
2547 | goto out_free; | |
2548 | ||
2549 | /* Find the field */ | |
2550 | ||
2551 | field = pevent_find_field(event, token); | |
2552 | if (!field) | |
2553 | goto out_free; | |
2554 | ||
2555 | arg->dynarray.field = field; | |
2556 | arg->dynarray.index = 0; | |
2557 | ||
2558 | if (read_expected(EVENT_DELIM, ")") < 0) | |
2559 | goto out_free; | |
2560 | ||
2561 | free_token(token); | |
2562 | type = read_token_item(&token); | |
2563 | *tok = token; | |
2564 | if (type != EVENT_OP || strcmp(token, "[") != 0) | |
2565 | return type; | |
2566 | ||
2567 | free_token(token); | |
2568 | arg = alloc_arg(); | |
fba7a782 | 2569 | if (!arg) { |
3388cc3e | 2570 | do_warning_event(event, "%s: not enough memory!", __func__); |
b1ac754b NK |
2571 | *tok = NULL; |
2572 | return EVENT_ERROR; | |
2573 | } | |
2574 | ||
f7d82350 SR |
2575 | type = process_arg(event, arg, &token); |
2576 | if (type == EVENT_ERROR) | |
b3511d05 | 2577 | goto out_free_arg; |
f7d82350 SR |
2578 | |
2579 | if (!test_type_token(type, token, EVENT_OP, "]")) | |
b3511d05 | 2580 | goto out_free_arg; |
f7d82350 SR |
2581 | |
2582 | free_token(token); | |
2583 | type = read_token_item(tok); | |
2584 | return type; | |
2585 | ||
b3511d05 NK |
2586 | out_free_arg: |
2587 | free_arg(arg); | |
f7d82350 | 2588 | out_free: |
f7d82350 SR |
2589 | free_token(token); |
2590 | *tok = NULL; | |
2591 | return EVENT_ERROR; | |
2592 | } | |
2593 | ||
2594 | static enum event_type | |
2595 | process_paren(struct event_format *event, struct print_arg *arg, char **tok) | |
2596 | { | |
2597 | struct print_arg *item_arg; | |
2598 | enum event_type type; | |
2599 | char *token; | |
2600 | ||
2601 | type = process_arg(event, arg, &token); | |
2602 | ||
2603 | if (type == EVENT_ERROR) | |
2604 | goto out_free; | |
2605 | ||
2606 | if (type == EVENT_OP) | |
2607 | type = process_op(event, arg, &token); | |
2608 | ||
2609 | if (type == EVENT_ERROR) | |
2610 | goto out_free; | |
2611 | ||
2612 | if (test_type_token(type, token, EVENT_DELIM, ")")) | |
2613 | goto out_free; | |
2614 | ||
2615 | free_token(token); | |
2616 | type = read_token_item(&token); | |
2617 | ||
2618 | /* | |
2619 | * If the next token is an item or another open paren, then | |
2620 | * this was a typecast. | |
2621 | */ | |
2622 | if (event_item_type(type) || | |
2623 | (type == EVENT_DELIM && strcmp(token, "(") == 0)) { | |
2624 | ||
2625 | /* make this a typecast and contine */ | |
2626 | ||
2627 | /* prevous must be an atom */ | |
a6d2a61a | 2628 | if (arg->type != PRINT_ATOM) { |
3388cc3e | 2629 | do_warning_event(event, "previous needed to be PRINT_ATOM"); |
a6d2a61a ACM |
2630 | goto out_free; |
2631 | } | |
f7d82350 SR |
2632 | |
2633 | item_arg = alloc_arg(); | |
b1ac754b | 2634 | if (!item_arg) { |
3388cc3e NK |
2635 | do_warning_event(event, "%s: not enough memory!", |
2636 | __func__); | |
b1ac754b NK |
2637 | goto out_free; |
2638 | } | |
f7d82350 SR |
2639 | |
2640 | arg->type = PRINT_TYPE; | |
2641 | arg->typecast.type = arg->atom.atom; | |
2642 | arg->typecast.item = item_arg; | |
2643 | type = process_arg_token(event, item_arg, &token, type); | |
2644 | ||
2645 | } | |
2646 | ||
2647 | *tok = token; | |
2648 | return type; | |
2649 | ||
2650 | out_free: | |
2651 | free_token(token); | |
2652 | *tok = NULL; | |
2653 | return EVENT_ERROR; | |
2654 | } | |
2655 | ||
2656 | ||
2657 | static enum event_type | |
1d037ca1 IT |
2658 | process_str(struct event_format *event __maybe_unused, struct print_arg *arg, |
2659 | char **tok) | |
f7d82350 SR |
2660 | { |
2661 | enum event_type type; | |
2662 | char *token; | |
2663 | ||
2664 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
2665 | goto out_free; | |
2666 | ||
2667 | arg->type = PRINT_STRING; | |
2668 | arg->string.string = token; | |
2669 | arg->string.offset = -1; | |
2670 | ||
2671 | if (read_expected(EVENT_DELIM, ")") < 0) | |
2672 | goto out_err; | |
2673 | ||
2674 | type = read_token(&token); | |
2675 | *tok = token; | |
2676 | ||
2677 | return type; | |
2678 | ||
2679 | out_free: | |
2680 | free_token(token); | |
2681 | out_err: | |
2682 | *tok = NULL; | |
2683 | return EVENT_ERROR; | |
2684 | } | |
2685 | ||
2686 | static struct pevent_function_handler * | |
2687 | find_func_handler(struct pevent *pevent, char *func_name) | |
2688 | { | |
2689 | struct pevent_function_handler *func; | |
2690 | ||
101782ea SR |
2691 | if (!pevent) |
2692 | return NULL; | |
2693 | ||
f7d82350 SR |
2694 | for (func = pevent->func_handlers; func; func = func->next) { |
2695 | if (strcmp(func->name, func_name) == 0) | |
2696 | break; | |
2697 | } | |
2698 | ||
2699 | return func; | |
2700 | } | |
2701 | ||
2702 | static void remove_func_handler(struct pevent *pevent, char *func_name) | |
2703 | { | |
2704 | struct pevent_function_handler *func; | |
2705 | struct pevent_function_handler **next; | |
2706 | ||
2707 | next = &pevent->func_handlers; | |
2708 | while ((func = *next)) { | |
2709 | if (strcmp(func->name, func_name) == 0) { | |
2710 | *next = func->next; | |
2711 | free_func_handle(func); | |
2712 | break; | |
2713 | } | |
2714 | next = &func->next; | |
2715 | } | |
2716 | } | |
2717 | ||
2718 | static enum event_type | |
2719 | process_func_handler(struct event_format *event, struct pevent_function_handler *func, | |
2720 | struct print_arg *arg, char **tok) | |
2721 | { | |
2722 | struct print_arg **next_arg; | |
2723 | struct print_arg *farg; | |
2724 | enum event_type type; | |
2725 | char *token; | |
f7d82350 SR |
2726 | int i; |
2727 | ||
2728 | arg->type = PRINT_FUNC; | |
2729 | arg->func.func = func; | |
2730 | ||
2731 | *tok = NULL; | |
2732 | ||
2733 | next_arg = &(arg->func.args); | |
2734 | for (i = 0; i < func->nr_args; i++) { | |
2735 | farg = alloc_arg(); | |
b1ac754b | 2736 | if (!farg) { |
3388cc3e NK |
2737 | do_warning_event(event, "%s: not enough memory!", |
2738 | __func__); | |
b1ac754b NK |
2739 | return EVENT_ERROR; |
2740 | } | |
2741 | ||
f7d82350 | 2742 | type = process_arg(event, farg, &token); |
3a3ffa2e SR |
2743 | if (i < (func->nr_args - 1)) { |
2744 | if (type != EVENT_DELIM || strcmp(token, ",") != 0) { | |
9e9e5dfd NK |
2745 | do_warning_event(event, |
2746 | "Error: function '%s()' expects %d arguments but event %s only uses %d", | |
3a3ffa2e SR |
2747 | func->name, func->nr_args, |
2748 | event->name, i + 1); | |
2749 | goto err; | |
2750 | } | |
2751 | } else { | |
2752 | if (type != EVENT_DELIM || strcmp(token, ")") != 0) { | |
9e9e5dfd NK |
2753 | do_warning_event(event, |
2754 | "Error: function '%s()' only expects %d arguments but event %s has more", | |
3a3ffa2e SR |
2755 | func->name, func->nr_args, event->name); |
2756 | goto err; | |
2757 | } | |
f7d82350 SR |
2758 | } |
2759 | ||
2760 | *next_arg = farg; | |
2761 | next_arg = &(farg->next); | |
2762 | free_token(token); | |
2763 | } | |
2764 | ||
2765 | type = read_token(&token); | |
2766 | *tok = token; | |
2767 | ||
2768 | return type; | |
3a3ffa2e SR |
2769 | |
2770 | err: | |
2771 | free_arg(farg); | |
2772 | free_token(token); | |
2773 | return EVENT_ERROR; | |
f7d82350 SR |
2774 | } |
2775 | ||
2776 | static enum event_type | |
2777 | process_function(struct event_format *event, struct print_arg *arg, | |
2778 | char *token, char **tok) | |
2779 | { | |
2780 | struct pevent_function_handler *func; | |
2781 | ||
2782 | if (strcmp(token, "__print_flags") == 0) { | |
2783 | free_token(token); | |
5205aec9 | 2784 | is_flag_field = 1; |
f7d82350 SR |
2785 | return process_flags(event, arg, tok); |
2786 | } | |
2787 | if (strcmp(token, "__print_symbolic") == 0) { | |
2788 | free_token(token); | |
5205aec9 | 2789 | is_symbolic_field = 1; |
f7d82350 SR |
2790 | return process_symbols(event, arg, tok); |
2791 | } | |
e080e6f1 NK |
2792 | if (strcmp(token, "__print_hex") == 0) { |
2793 | free_token(token); | |
2794 | return process_hex(event, arg, tok); | |
2795 | } | |
f7d82350 SR |
2796 | if (strcmp(token, "__get_str") == 0) { |
2797 | free_token(token); | |
2798 | return process_str(event, arg, tok); | |
2799 | } | |
2800 | if (strcmp(token, "__get_dynamic_array") == 0) { | |
2801 | free_token(token); | |
2802 | return process_dynamic_array(event, arg, tok); | |
2803 | } | |
2804 | ||
2805 | func = find_func_handler(event->pevent, token); | |
2806 | if (func) { | |
2807 | free_token(token); | |
2808 | return process_func_handler(event, func, arg, tok); | |
2809 | } | |
2810 | ||
3388cc3e | 2811 | do_warning_event(event, "function %s not defined", token); |
f7d82350 SR |
2812 | free_token(token); |
2813 | return EVENT_ERROR; | |
2814 | } | |
2815 | ||
2816 | static enum event_type | |
2817 | process_arg_token(struct event_format *event, struct print_arg *arg, | |
2818 | char **tok, enum event_type type) | |
2819 | { | |
2820 | char *token; | |
2821 | char *atom; | |
2822 | ||
2823 | token = *tok; | |
2824 | ||
2825 | switch (type) { | |
2826 | case EVENT_ITEM: | |
2827 | if (strcmp(token, "REC") == 0) { | |
2828 | free_token(token); | |
2829 | type = process_entry(event, arg, &token); | |
2830 | break; | |
2831 | } | |
2832 | atom = token; | |
2833 | /* test the next token */ | |
2834 | type = read_token_item(&token); | |
2835 | ||
2836 | /* | |
2837 | * If the next token is a parenthesis, then this | |
2838 | * is a function. | |
2839 | */ | |
2840 | if (type == EVENT_DELIM && strcmp(token, "(") == 0) { | |
2841 | free_token(token); | |
2842 | token = NULL; | |
2843 | /* this will free atom. */ | |
2844 | type = process_function(event, arg, atom, &token); | |
2845 | break; | |
2846 | } | |
2847 | /* atoms can be more than one token long */ | |
2848 | while (type == EVENT_ITEM) { | |
d286447f NK |
2849 | char *new_atom; |
2850 | new_atom = realloc(atom, | |
2851 | strlen(atom) + strlen(token) + 2); | |
2852 | if (!new_atom) { | |
2853 | free(atom); | |
2854 | *tok = NULL; | |
2855 | free_token(token); | |
2856 | return EVENT_ERROR; | |
2857 | } | |
2858 | atom = new_atom; | |
f7d82350 SR |
2859 | strcat(atom, " "); |
2860 | strcat(atom, token); | |
2861 | free_token(token); | |
2862 | type = read_token_item(&token); | |
2863 | } | |
2864 | ||
2865 | arg->type = PRINT_ATOM; | |
2866 | arg->atom.atom = atom; | |
2867 | break; | |
2868 | ||
2869 | case EVENT_DQUOTE: | |
2870 | case EVENT_SQUOTE: | |
2871 | arg->type = PRINT_ATOM; | |
2872 | arg->atom.atom = token; | |
2873 | type = read_token_item(&token); | |
2874 | break; | |
2875 | case EVENT_DELIM: | |
2876 | if (strcmp(token, "(") == 0) { | |
2877 | free_token(token); | |
2878 | type = process_paren(event, arg, &token); | |
2879 | break; | |
2880 | } | |
2881 | case EVENT_OP: | |
2882 | /* handle single ops */ | |
2883 | arg->type = PRINT_OP; | |
2884 | arg->op.op = token; | |
2885 | arg->op.left = NULL; | |
2886 | type = process_op(event, arg, &token); | |
2887 | ||
2888 | /* On error, the op is freed */ | |
2889 | if (type == EVENT_ERROR) | |
2890 | arg->op.op = NULL; | |
2891 | ||
2892 | /* return error type if errored */ | |
2893 | break; | |
2894 | ||
2895 | case EVENT_ERROR ... EVENT_NEWLINE: | |
2896 | default: | |
3388cc3e | 2897 | do_warning_event(event, "unexpected type %d", type); |
a6d2a61a | 2898 | return EVENT_ERROR; |
f7d82350 SR |
2899 | } |
2900 | *tok = token; | |
2901 | ||
2902 | return type; | |
2903 | } | |
2904 | ||
2905 | static int event_read_print_args(struct event_format *event, struct print_arg **list) | |
2906 | { | |
2907 | enum event_type type = EVENT_ERROR; | |
2908 | struct print_arg *arg; | |
2909 | char *token; | |
2910 | int args = 0; | |
2911 | ||
2912 | do { | |
2913 | if (type == EVENT_NEWLINE) { | |
2914 | type = read_token_item(&token); | |
2915 | continue; | |
2916 | } | |
2917 | ||
2918 | arg = alloc_arg(); | |
b1ac754b | 2919 | if (!arg) { |
3388cc3e NK |
2920 | do_warning_event(event, "%s: not enough memory!", |
2921 | __func__); | |
b1ac754b NK |
2922 | return -1; |
2923 | } | |
f7d82350 SR |
2924 | |
2925 | type = process_arg(event, arg, &token); | |
2926 | ||
2927 | if (type == EVENT_ERROR) { | |
2928 | free_token(token); | |
2929 | free_arg(arg); | |
2930 | return -1; | |
2931 | } | |
2932 | ||
2933 | *list = arg; | |
2934 | args++; | |
2935 | ||
2936 | if (type == EVENT_OP) { | |
2937 | type = process_op(event, arg, &token); | |
2938 | free_token(token); | |
2939 | if (type == EVENT_ERROR) { | |
2940 | *list = NULL; | |
2941 | free_arg(arg); | |
2942 | return -1; | |
2943 | } | |
2944 | list = &arg->next; | |
2945 | continue; | |
2946 | } | |
2947 | ||
2948 | if (type == EVENT_DELIM && strcmp(token, ",") == 0) { | |
2949 | free_token(token); | |
2950 | *list = arg; | |
2951 | list = &arg->next; | |
2952 | continue; | |
2953 | } | |
2954 | break; | |
2955 | } while (type != EVENT_NONE); | |
2956 | ||
2957 | if (type != EVENT_NONE && type != EVENT_ERROR) | |
2958 | free_token(token); | |
2959 | ||
2960 | return args; | |
2961 | } | |
2962 | ||
2963 | static int event_read_print(struct event_format *event) | |
2964 | { | |
2965 | enum event_type type; | |
2966 | char *token; | |
2967 | int ret; | |
2968 | ||
2969 | if (read_expected_item(EVENT_ITEM, "print") < 0) | |
2970 | return -1; | |
2971 | ||
2972 | if (read_expected(EVENT_ITEM, "fmt") < 0) | |
2973 | return -1; | |
2974 | ||
2975 | if (read_expected(EVENT_OP, ":") < 0) | |
2976 | return -1; | |
2977 | ||
2978 | if (read_expect_type(EVENT_DQUOTE, &token) < 0) | |
2979 | goto fail; | |
2980 | ||
2981 | concat: | |
2982 | event->print_fmt.format = token; | |
2983 | event->print_fmt.args = NULL; | |
2984 | ||
2985 | /* ok to have no arg */ | |
2986 | type = read_token_item(&token); | |
2987 | ||
2988 | if (type == EVENT_NONE) | |
2989 | return 0; | |
2990 | ||
2991 | /* Handle concatenation of print lines */ | |
2992 | if (type == EVENT_DQUOTE) { | |
2993 | char *cat; | |
2994 | ||
0dbca1e3 ACM |
2995 | if (asprintf(&cat, "%s%s", event->print_fmt.format, token) < 0) |
2996 | goto fail; | |
f7d82350 SR |
2997 | free_token(token); |
2998 | free_token(event->print_fmt.format); | |
2999 | event->print_fmt.format = NULL; | |
3000 | token = cat; | |
3001 | goto concat; | |
3002 | } | |
3003 | ||
3004 | if (test_type_token(type, token, EVENT_DELIM, ",")) | |
3005 | goto fail; | |
3006 | ||
3007 | free_token(token); | |
3008 | ||
3009 | ret = event_read_print_args(event, &event->print_fmt.args); | |
3010 | if (ret < 0) | |
3011 | return -1; | |
3012 | ||
3013 | return ret; | |
3014 | ||
3015 | fail: | |
3016 | free_token(token); | |
3017 | return -1; | |
3018 | } | |
3019 | ||
3020 | /** | |
3021 | * pevent_find_common_field - return a common field by event | |
3022 | * @event: handle for the event | |
3023 | * @name: the name of the common field to return | |
3024 | * | |
3025 | * Returns a common field from the event by the given @name. | |
3026 | * This only searchs the common fields and not all field. | |
3027 | */ | |
3028 | struct format_field * | |
3029 | pevent_find_common_field(struct event_format *event, const char *name) | |
3030 | { | |
3031 | struct format_field *format; | |
3032 | ||
3033 | for (format = event->format.common_fields; | |
3034 | format; format = format->next) { | |
3035 | if (strcmp(format->name, name) == 0) | |
3036 | break; | |
3037 | } | |
3038 | ||
3039 | return format; | |
3040 | } | |
3041 | ||
3042 | /** | |
3043 | * pevent_find_field - find a non-common field | |
3044 | * @event: handle for the event | |
3045 | * @name: the name of the non-common field | |
3046 | * | |
3047 | * Returns a non-common field by the given @name. | |
3048 | * This does not search common fields. | |
3049 | */ | |
3050 | struct format_field * | |
3051 | pevent_find_field(struct event_format *event, const char *name) | |
3052 | { | |
3053 | struct format_field *format; | |
3054 | ||
3055 | for (format = event->format.fields; | |
3056 | format; format = format->next) { | |
3057 | if (strcmp(format->name, name) == 0) | |
3058 | break; | |
3059 | } | |
3060 | ||
3061 | return format; | |
3062 | } | |
3063 | ||
3064 | /** | |
3065 | * pevent_find_any_field - find any field by name | |
3066 | * @event: handle for the event | |
3067 | * @name: the name of the field | |
3068 | * | |
3069 | * Returns a field by the given @name. | |
3070 | * This searchs the common field names first, then | |
3071 | * the non-common ones if a common one was not found. | |
3072 | */ | |
3073 | struct format_field * | |
3074 | pevent_find_any_field(struct event_format *event, const char *name) | |
3075 | { | |
3076 | struct format_field *format; | |
3077 | ||
3078 | format = pevent_find_common_field(event, name); | |
3079 | if (format) | |
3080 | return format; | |
3081 | return pevent_find_field(event, name); | |
3082 | } | |
3083 | ||
3084 | /** | |
3085 | * pevent_read_number - read a number from data | |
3086 | * @pevent: handle for the pevent | |
3087 | * @ptr: the raw data | |
3088 | * @size: the size of the data that holds the number | |
3089 | * | |
3090 | * Returns the number (converted to host) from the | |
3091 | * raw data. | |
3092 | */ | |
3093 | unsigned long long pevent_read_number(struct pevent *pevent, | |
3094 | const void *ptr, int size) | |
3095 | { | |
3096 | switch (size) { | |
3097 | case 1: | |
3098 | return *(unsigned char *)ptr; | |
3099 | case 2: | |
3100 | return data2host2(pevent, ptr); | |
3101 | case 4: | |
3102 | return data2host4(pevent, ptr); | |
3103 | case 8: | |
3104 | return data2host8(pevent, ptr); | |
3105 | default: | |
3106 | /* BUG! */ | |
3107 | return 0; | |
3108 | } | |
3109 | } | |
3110 | ||
3111 | /** | |
3112 | * pevent_read_number_field - read a number from data | |
3113 | * @field: a handle to the field | |
3114 | * @data: the raw data to read | |
3115 | * @value: the value to place the number in | |
3116 | * | |
3117 | * Reads raw data according to a field offset and size, | |
3118 | * and translates it into @value. | |
3119 | * | |
3120 | * Returns 0 on success, -1 otherwise. | |
3121 | */ | |
3122 | int pevent_read_number_field(struct format_field *field, const void *data, | |
3123 | unsigned long long *value) | |
3124 | { | |
3125 | if (!field) | |
3126 | return -1; | |
3127 | switch (field->size) { | |
3128 | case 1: | |
3129 | case 2: | |
3130 | case 4: | |
3131 | case 8: | |
3132 | *value = pevent_read_number(field->event->pevent, | |
3133 | data + field->offset, field->size); | |
3134 | return 0; | |
3135 | default: | |
3136 | return -1; | |
3137 | } | |
3138 | } | |
3139 | ||
3140 | static int get_common_info(struct pevent *pevent, | |
3141 | const char *type, int *offset, int *size) | |
3142 | { | |
3143 | struct event_format *event; | |
3144 | struct format_field *field; | |
3145 | ||
3146 | /* | |
3147 | * All events should have the same common elements. | |
3148 | * Pick any event to find where the type is; | |
3149 | */ | |
a6d2a61a ACM |
3150 | if (!pevent->events) { |
3151 | do_warning("no event_list!"); | |
3152 | return -1; | |
3153 | } | |
f7d82350 SR |
3154 | |
3155 | event = pevent->events[0]; | |
3156 | field = pevent_find_common_field(event, type); | |
3157 | if (!field) | |
0866a97e | 3158 | return -1; |
f7d82350 SR |
3159 | |
3160 | *offset = field->offset; | |
3161 | *size = field->size; | |
3162 | ||
3163 | return 0; | |
3164 | } | |
3165 | ||
3166 | static int __parse_common(struct pevent *pevent, void *data, | |
3167 | int *size, int *offset, const char *name) | |
3168 | { | |
3169 | int ret; | |
3170 | ||
3171 | if (!*size) { | |
3172 | ret = get_common_info(pevent, name, offset, size); | |
3173 | if (ret < 0) | |
3174 | return ret; | |
3175 | } | |
3176 | return pevent_read_number(pevent, data + *offset, *size); | |
3177 | } | |
3178 | ||
3179 | static int trace_parse_common_type(struct pevent *pevent, void *data) | |
3180 | { | |
3181 | return __parse_common(pevent, data, | |
3182 | &pevent->type_size, &pevent->type_offset, | |
3183 | "common_type"); | |
3184 | } | |
3185 | ||
3186 | static int parse_common_pid(struct pevent *pevent, void *data) | |
3187 | { | |
3188 | return __parse_common(pevent, data, | |
3189 | &pevent->pid_size, &pevent->pid_offset, | |
3190 | "common_pid"); | |
3191 | } | |
3192 | ||
3193 | static int parse_common_pc(struct pevent *pevent, void *data) | |
3194 | { | |
3195 | return __parse_common(pevent, data, | |
3196 | &pevent->pc_size, &pevent->pc_offset, | |
3197 | "common_preempt_count"); | |
3198 | } | |
3199 | ||
3200 | static int parse_common_flags(struct pevent *pevent, void *data) | |
3201 | { | |
3202 | return __parse_common(pevent, data, | |
3203 | &pevent->flags_size, &pevent->flags_offset, | |
3204 | "common_flags"); | |
3205 | } | |
3206 | ||
3207 | static int parse_common_lock_depth(struct pevent *pevent, void *data) | |
3208 | { | |
0866a97e SR |
3209 | return __parse_common(pevent, data, |
3210 | &pevent->ld_size, &pevent->ld_offset, | |
3211 | "common_lock_depth"); | |
3212 | } | |
f7d82350 | 3213 | |
0866a97e SR |
3214 | static int parse_common_migrate_disable(struct pevent *pevent, void *data) |
3215 | { | |
3216 | return __parse_common(pevent, data, | |
3217 | &pevent->ld_size, &pevent->ld_offset, | |
3218 | "common_migrate_disable"); | |
f7d82350 SR |
3219 | } |
3220 | ||
3221 | static int events_id_cmp(const void *a, const void *b); | |
3222 | ||
3223 | /** | |
3224 | * pevent_find_event - find an event by given id | |
3225 | * @pevent: a handle to the pevent | |
3226 | * @id: the id of the event | |
3227 | * | |
3228 | * Returns an event that has a given @id. | |
3229 | */ | |
3230 | struct event_format *pevent_find_event(struct pevent *pevent, int id) | |
3231 | { | |
3232 | struct event_format **eventptr; | |
3233 | struct event_format key; | |
3234 | struct event_format *pkey = &key; | |
3235 | ||
3236 | /* Check cache first */ | |
3237 | if (pevent->last_event && pevent->last_event->id == id) | |
3238 | return pevent->last_event; | |
3239 | ||
3240 | key.id = id; | |
3241 | ||
3242 | eventptr = bsearch(&pkey, pevent->events, pevent->nr_events, | |
3243 | sizeof(*pevent->events), events_id_cmp); | |
3244 | ||
3245 | if (eventptr) { | |
3246 | pevent->last_event = *eventptr; | |
3247 | return *eventptr; | |
3248 | } | |
3249 | ||
3250 | return NULL; | |
3251 | } | |
3252 | ||
3253 | /** | |
3254 | * pevent_find_event_by_name - find an event by given name | |
3255 | * @pevent: a handle to the pevent | |
3256 | * @sys: the system name to search for | |
3257 | * @name: the name of the event to search for | |
3258 | * | |
3259 | * This returns an event with a given @name and under the system | |
3260 | * @sys. If @sys is NULL the first event with @name is returned. | |
3261 | */ | |
3262 | struct event_format * | |
3263 | pevent_find_event_by_name(struct pevent *pevent, | |
3264 | const char *sys, const char *name) | |
3265 | { | |
3266 | struct event_format *event; | |
3267 | int i; | |
3268 | ||
3269 | if (pevent->last_event && | |
3270 | strcmp(pevent->last_event->name, name) == 0 && | |
3271 | (!sys || strcmp(pevent->last_event->system, sys) == 0)) | |
3272 | return pevent->last_event; | |
3273 | ||
3274 | for (i = 0; i < pevent->nr_events; i++) { | |
3275 | event = pevent->events[i]; | |
3276 | if (strcmp(event->name, name) == 0) { | |
3277 | if (!sys) | |
3278 | break; | |
3279 | if (strcmp(event->system, sys) == 0) | |
3280 | break; | |
3281 | } | |
3282 | } | |
3283 | if (i == pevent->nr_events) | |
3284 | event = NULL; | |
3285 | ||
3286 | pevent->last_event = event; | |
3287 | return event; | |
3288 | } | |
3289 | ||
3290 | static unsigned long long | |
3291 | eval_num_arg(void *data, int size, struct event_format *event, struct print_arg *arg) | |
3292 | { | |
3293 | struct pevent *pevent = event->pevent; | |
3294 | unsigned long long val = 0; | |
3295 | unsigned long long left, right; | |
3296 | struct print_arg *typearg = NULL; | |
3297 | struct print_arg *larg; | |
3298 | unsigned long offset; | |
3299 | unsigned int field_size; | |
3300 | ||
3301 | switch (arg->type) { | |
3302 | case PRINT_NULL: | |
3303 | /* ?? */ | |
3304 | return 0; | |
3305 | case PRINT_ATOM: | |
3306 | return strtoull(arg->atom.atom, NULL, 0); | |
3307 | case PRINT_FIELD: | |
3308 | if (!arg->field.field) { | |
3309 | arg->field.field = pevent_find_any_field(event, arg->field.name); | |
3310 | if (!arg->field.field) | |
a6d2a61a ACM |
3311 | goto out_warning_field; |
3312 | ||
f7d82350 SR |
3313 | } |
3314 | /* must be a number */ | |
3315 | val = pevent_read_number(pevent, data + arg->field.field->offset, | |
3316 | arg->field.field->size); | |
3317 | break; | |
3318 | case PRINT_FLAGS: | |
3319 | case PRINT_SYMBOL: | |
e080e6f1 | 3320 | case PRINT_HEX: |
f7d82350 SR |
3321 | break; |
3322 | case PRINT_TYPE: | |
3323 | val = eval_num_arg(data, size, event, arg->typecast.item); | |
3324 | return eval_type(val, arg, 0); | |
3325 | case PRINT_STRING: | |
3326 | case PRINT_BSTRING: | |
3327 | return 0; | |
3328 | case PRINT_FUNC: { | |
3329 | struct trace_seq s; | |
3330 | trace_seq_init(&s); | |
3331 | val = process_defined_func(&s, data, size, event, arg); | |
3332 | trace_seq_destroy(&s); | |
3333 | return val; | |
3334 | } | |
3335 | case PRINT_OP: | |
3336 | if (strcmp(arg->op.op, "[") == 0) { | |
3337 | /* | |
3338 | * Arrays are special, since we don't want | |
3339 | * to read the arg as is. | |
3340 | */ | |
3341 | right = eval_num_arg(data, size, event, arg->op.right); | |
3342 | ||
3343 | /* handle typecasts */ | |
3344 | larg = arg->op.left; | |
3345 | while (larg->type == PRINT_TYPE) { | |
3346 | if (!typearg) | |
3347 | typearg = larg; | |
3348 | larg = larg->typecast.item; | |
3349 | } | |
3350 | ||
3351 | /* Default to long size */ | |
3352 | field_size = pevent->long_size; | |
3353 | ||
3354 | switch (larg->type) { | |
3355 | case PRINT_DYNAMIC_ARRAY: | |
3356 | offset = pevent_read_number(pevent, | |
3357 | data + larg->dynarray.field->offset, | |
3358 | larg->dynarray.field->size); | |
3359 | if (larg->dynarray.field->elementsize) | |
3360 | field_size = larg->dynarray.field->elementsize; | |
3361 | /* | |
3362 | * The actual length of the dynamic array is stored | |
3363 | * in the top half of the field, and the offset | |
3364 | * is in the bottom half of the 32 bit field. | |
3365 | */ | |
3366 | offset &= 0xffff; | |
3367 | offset += right; | |
3368 | break; | |
3369 | case PRINT_FIELD: | |
3370 | if (!larg->field.field) { | |
3371 | larg->field.field = | |
3372 | pevent_find_any_field(event, larg->field.name); | |
a6d2a61a ACM |
3373 | if (!larg->field.field) { |
3374 | arg = larg; | |
3375 | goto out_warning_field; | |
3376 | } | |
f7d82350 SR |
3377 | } |
3378 | field_size = larg->field.field->elementsize; | |
3379 | offset = larg->field.field->offset + | |
3380 | right * larg->field.field->elementsize; | |
3381 | break; | |
3382 | default: | |
3383 | goto default_op; /* oops, all bets off */ | |
3384 | } | |
3385 | val = pevent_read_number(pevent, | |
3386 | data + offset, field_size); | |
3387 | if (typearg) | |
3388 | val = eval_type(val, typearg, 1); | |
3389 | break; | |
3390 | } else if (strcmp(arg->op.op, "?") == 0) { | |
3391 | left = eval_num_arg(data, size, event, arg->op.left); | |
3392 | arg = arg->op.right; | |
3393 | if (left) | |
3394 | val = eval_num_arg(data, size, event, arg->op.left); | |
3395 | else | |
3396 | val = eval_num_arg(data, size, event, arg->op.right); | |
3397 | break; | |
3398 | } | |
3399 | default_op: | |
3400 | left = eval_num_arg(data, size, event, arg->op.left); | |
3401 | right = eval_num_arg(data, size, event, arg->op.right); | |
3402 | switch (arg->op.op[0]) { | |
3403 | case '!': | |
3404 | switch (arg->op.op[1]) { | |
3405 | case 0: | |
3406 | val = !right; | |
3407 | break; | |
3408 | case '=': | |
3409 | val = left != right; | |
3410 | break; | |
3411 | default: | |
a6d2a61a | 3412 | goto out_warning_op; |
f7d82350 SR |
3413 | } |
3414 | break; | |
3415 | case '~': | |
3416 | val = ~right; | |
3417 | break; | |
3418 | case '|': | |
3419 | if (arg->op.op[1]) | |
3420 | val = left || right; | |
3421 | else | |
3422 | val = left | right; | |
3423 | break; | |
3424 | case '&': | |
3425 | if (arg->op.op[1]) | |
3426 | val = left && right; | |
3427 | else | |
3428 | val = left & right; | |
3429 | break; | |
3430 | case '<': | |
3431 | switch (arg->op.op[1]) { | |
3432 | case 0: | |
3433 | val = left < right; | |
3434 | break; | |
3435 | case '<': | |
3436 | val = left << right; | |
3437 | break; | |
3438 | case '=': | |
3439 | val = left <= right; | |
3440 | break; | |
3441 | default: | |
a6d2a61a | 3442 | goto out_warning_op; |
f7d82350 SR |
3443 | } |
3444 | break; | |
3445 | case '>': | |
3446 | switch (arg->op.op[1]) { | |
3447 | case 0: | |
3448 | val = left > right; | |
3449 | break; | |
3450 | case '>': | |
3451 | val = left >> right; | |
3452 | break; | |
3453 | case '=': | |
3454 | val = left >= right; | |
3455 | break; | |
3456 | default: | |
a6d2a61a | 3457 | goto out_warning_op; |
f7d82350 SR |
3458 | } |
3459 | break; | |
3460 | case '=': | |
3461 | if (arg->op.op[1] != '=') | |
a6d2a61a ACM |
3462 | goto out_warning_op; |
3463 | ||
f7d82350 SR |
3464 | val = left == right; |
3465 | break; | |
3466 | case '-': | |
3467 | val = left - right; | |
3468 | break; | |
3469 | case '+': | |
3470 | val = left + right; | |
3471 | break; | |
2e7a5fc8 SR |
3472 | case '/': |
3473 | val = left / right; | |
3474 | break; | |
3475 | case '*': | |
3476 | val = left * right; | |
3477 | break; | |
f7d82350 | 3478 | default: |
a6d2a61a | 3479 | goto out_warning_op; |
f7d82350 SR |
3480 | } |
3481 | break; | |
0497a9eb SR |
3482 | case PRINT_DYNAMIC_ARRAY: |
3483 | /* Without [], we pass the address to the dynamic data */ | |
3484 | offset = pevent_read_number(pevent, | |
3485 | data + arg->dynarray.field->offset, | |
3486 | arg->dynarray.field->size); | |
3487 | /* | |
3488 | * The actual length of the dynamic array is stored | |
3489 | * in the top half of the field, and the offset | |
3490 | * is in the bottom half of the 32 bit field. | |
3491 | */ | |
3492 | offset &= 0xffff; | |
6b5fa0ba | 3493 | val = (unsigned long long)((unsigned long)data + offset); |
0497a9eb | 3494 | break; |
f7d82350 SR |
3495 | default: /* not sure what to do there */ |
3496 | return 0; | |
3497 | } | |
3498 | return val; | |
a6d2a61a ACM |
3499 | |
3500 | out_warning_op: | |
3388cc3e | 3501 | do_warning_event(event, "%s: unknown op '%s'", __func__, arg->op.op); |
a6d2a61a ACM |
3502 | return 0; |
3503 | ||
3504 | out_warning_field: | |
3388cc3e NK |
3505 | do_warning_event(event, "%s: field %s not found", |
3506 | __func__, arg->field.name); | |
a6d2a61a | 3507 | return 0; |
f7d82350 SR |
3508 | } |
3509 | ||
3510 | struct flag { | |
3511 | const char *name; | |
3512 | unsigned long long value; | |
3513 | }; | |
3514 | ||
3515 | static const struct flag flags[] = { | |
3516 | { "HI_SOFTIRQ", 0 }, | |
3517 | { "TIMER_SOFTIRQ", 1 }, | |
3518 | { "NET_TX_SOFTIRQ", 2 }, | |
3519 | { "NET_RX_SOFTIRQ", 3 }, | |
3520 | { "BLOCK_SOFTIRQ", 4 }, | |
3521 | { "BLOCK_IOPOLL_SOFTIRQ", 5 }, | |
3522 | { "TASKLET_SOFTIRQ", 6 }, | |
3523 | { "SCHED_SOFTIRQ", 7 }, | |
3524 | { "HRTIMER_SOFTIRQ", 8 }, | |
3525 | { "RCU_SOFTIRQ", 9 }, | |
3526 | ||
3527 | { "HRTIMER_NORESTART", 0 }, | |
3528 | { "HRTIMER_RESTART", 1 }, | |
3529 | }; | |
3530 | ||
3531 | static unsigned long long eval_flag(const char *flag) | |
3532 | { | |
3533 | int i; | |
3534 | ||
3535 | /* | |
3536 | * Some flags in the format files do not get converted. | |
3537 | * If the flag is not numeric, see if it is something that | |
3538 | * we already know about. | |
3539 | */ | |
3540 | if (isdigit(flag[0])) | |
3541 | return strtoull(flag, NULL, 0); | |
3542 | ||
3543 | for (i = 0; i < (int)(sizeof(flags)/sizeof(flags[0])); i++) | |
3544 | if (strcmp(flags[i].name, flag) == 0) | |
3545 | return flags[i].value; | |
3546 | ||
3547 | return 0; | |
3548 | } | |
3549 | ||
3550 | static void print_str_to_seq(struct trace_seq *s, const char *format, | |
3551 | int len_arg, const char *str) | |
3552 | { | |
3553 | if (len_arg >= 0) | |
3554 | trace_seq_printf(s, format, len_arg, str); | |
3555 | else | |
3556 | trace_seq_printf(s, format, str); | |
3557 | } | |
3558 | ||
3559 | static void print_str_arg(struct trace_seq *s, void *data, int size, | |
3560 | struct event_format *event, const char *format, | |
3561 | int len_arg, struct print_arg *arg) | |
3562 | { | |
3563 | struct pevent *pevent = event->pevent; | |
3564 | struct print_flag_sym *flag; | |
b7008071 | 3565 | struct format_field *field; |
0970b5f4 | 3566 | struct printk_map *printk; |
f7d82350 SR |
3567 | unsigned long long val, fval; |
3568 | unsigned long addr; | |
3569 | char *str; | |
e080e6f1 | 3570 | unsigned char *hex; |
f7d82350 | 3571 | int print; |
e080e6f1 | 3572 | int i, len; |
f7d82350 SR |
3573 | |
3574 | switch (arg->type) { | |
3575 | case PRINT_NULL: | |
3576 | /* ?? */ | |
3577 | return; | |
3578 | case PRINT_ATOM: | |
3579 | print_str_to_seq(s, format, len_arg, arg->atom.atom); | |
3580 | return; | |
3581 | case PRINT_FIELD: | |
b7008071 NK |
3582 | field = arg->field.field; |
3583 | if (!field) { | |
3584 | field = pevent_find_any_field(event, arg->field.name); | |
a6d2a61a ACM |
3585 | if (!field) { |
3586 | str = arg->field.name; | |
3587 | goto out_warning_field; | |
3588 | } | |
b7008071 | 3589 | arg->field.field = field; |
f7d82350 SR |
3590 | } |
3591 | /* Zero sized fields, mean the rest of the data */ | |
b7008071 | 3592 | len = field->size ? : size - field->offset; |
f7d82350 SR |
3593 | |
3594 | /* | |
3595 | * Some events pass in pointers. If this is not an array | |
3596 | * and the size is the same as long_size, assume that it | |
3597 | * is a pointer. | |
3598 | */ | |
b7008071 NK |
3599 | if (!(field->flags & FIELD_IS_ARRAY) && |
3600 | field->size == pevent->long_size) { | |
3601 | addr = *(unsigned long *)(data + field->offset); | |
0970b5f4 SRRH |
3602 | /* Check if it matches a print format */ |
3603 | printk = find_printk(pevent, addr); | |
3604 | if (printk) | |
3605 | trace_seq_puts(s, printk->printk); | |
3606 | else | |
3607 | trace_seq_printf(s, "%lx", addr); | |
f7d82350 SR |
3608 | break; |
3609 | } | |
a6d2a61a ACM |
3610 | str = malloc(len + 1); |
3611 | if (!str) { | |
3388cc3e NK |
3612 | do_warning_event(event, "%s: not enough memory!", |
3613 | __func__); | |
a6d2a61a ACM |
3614 | return; |
3615 | } | |
b7008071 | 3616 | memcpy(str, data + field->offset, len); |
f7d82350 SR |
3617 | str[len] = 0; |
3618 | print_str_to_seq(s, format, len_arg, str); | |
3619 | free(str); | |
3620 | break; | |
3621 | case PRINT_FLAGS: | |
3622 | val = eval_num_arg(data, size, event, arg->flags.field); | |
3623 | print = 0; | |
3624 | for (flag = arg->flags.flags; flag; flag = flag->next) { | |
3625 | fval = eval_flag(flag->value); | |
3626 | if (!val && !fval) { | |
3627 | print_str_to_seq(s, format, len_arg, flag->str); | |
3628 | break; | |
3629 | } | |
3630 | if (fval && (val & fval) == fval) { | |
3631 | if (print && arg->flags.delim) | |
3632 | trace_seq_puts(s, arg->flags.delim); | |
3633 | print_str_to_seq(s, format, len_arg, flag->str); | |
3634 | print = 1; | |
3635 | val &= ~fval; | |
3636 | } | |
3637 | } | |
3638 | break; | |
3639 | case PRINT_SYMBOL: | |
3640 | val = eval_num_arg(data, size, event, arg->symbol.field); | |
3641 | for (flag = arg->symbol.symbols; flag; flag = flag->next) { | |
3642 | fval = eval_flag(flag->value); | |
3643 | if (val == fval) { | |
3644 | print_str_to_seq(s, format, len_arg, flag->str); | |
3645 | break; | |
3646 | } | |
3647 | } | |
3648 | break; | |
e080e6f1 | 3649 | case PRINT_HEX: |
b30f75eb HC |
3650 | if (arg->hex.field->type == PRINT_DYNAMIC_ARRAY) { |
3651 | unsigned long offset; | |
3652 | offset = pevent_read_number(pevent, | |
3653 | data + arg->hex.field->dynarray.field->offset, | |
3654 | arg->hex.field->dynarray.field->size); | |
3655 | hex = data + (offset & 0xffff); | |
3656 | } else { | |
3657 | field = arg->hex.field->field.field; | |
3658 | if (!field) { | |
3659 | str = arg->hex.field->field.name; | |
3660 | field = pevent_find_any_field(event, str); | |
3661 | if (!field) | |
3662 | goto out_warning_field; | |
3663 | arg->hex.field->field.field = field; | |
3664 | } | |
3665 | hex = data + field->offset; | |
e080e6f1 | 3666 | } |
e080e6f1 NK |
3667 | len = eval_num_arg(data, size, event, arg->hex.size); |
3668 | for (i = 0; i < len; i++) { | |
3669 | if (i) | |
3670 | trace_seq_putc(s, ' '); | |
3671 | trace_seq_printf(s, "%02x", hex[i]); | |
3672 | } | |
3673 | break; | |
f7d82350 SR |
3674 | |
3675 | case PRINT_TYPE: | |
3676 | break; | |
3677 | case PRINT_STRING: { | |
3678 | int str_offset; | |
3679 | ||
3680 | if (arg->string.offset == -1) { | |
3681 | struct format_field *f; | |
3682 | ||
3683 | f = pevent_find_any_field(event, arg->string.string); | |
3684 | arg->string.offset = f->offset; | |
3685 | } | |
3686 | str_offset = data2host4(pevent, data + arg->string.offset); | |
3687 | str_offset &= 0xffff; | |
3688 | print_str_to_seq(s, format, len_arg, ((char *)data) + str_offset); | |
3689 | break; | |
3690 | } | |
3691 | case PRINT_BSTRING: | |
c2e6dc2b | 3692 | print_str_to_seq(s, format, len_arg, arg->string.string); |
f7d82350 SR |
3693 | break; |
3694 | case PRINT_OP: | |
3695 | /* | |
3696 | * The only op for string should be ? : | |
3697 | */ | |
3698 | if (arg->op.op[0] != '?') | |
3699 | return; | |
3700 | val = eval_num_arg(data, size, event, arg->op.left); | |
3701 | if (val) | |
3702 | print_str_arg(s, data, size, event, | |
3703 | format, len_arg, arg->op.right->op.left); | |
3704 | else | |
3705 | print_str_arg(s, data, size, event, | |
3706 | format, len_arg, arg->op.right->op.right); | |
3707 | break; | |
3708 | case PRINT_FUNC: | |
3709 | process_defined_func(s, data, size, event, arg); | |
3710 | break; | |
3711 | default: | |
3712 | /* well... */ | |
3713 | break; | |
3714 | } | |
a6d2a61a ACM |
3715 | |
3716 | return; | |
3717 | ||
3718 | out_warning_field: | |
3388cc3e NK |
3719 | do_warning_event(event, "%s: field %s not found", |
3720 | __func__, arg->field.name); | |
f7d82350 SR |
3721 | } |
3722 | ||
3723 | static unsigned long long | |
3724 | process_defined_func(struct trace_seq *s, void *data, int size, | |
3725 | struct event_format *event, struct print_arg *arg) | |
3726 | { | |
3727 | struct pevent_function_handler *func_handle = arg->func.func; | |
3728 | struct pevent_func_params *param; | |
3729 | unsigned long long *args; | |
3730 | unsigned long long ret; | |
3731 | struct print_arg *farg; | |
3732 | struct trace_seq str; | |
3733 | struct save_str { | |
3734 | struct save_str *next; | |
3735 | char *str; | |
3736 | } *strings = NULL, *string; | |
3737 | int i; | |
3738 | ||
3739 | if (!func_handle->nr_args) { | |
3740 | ret = (*func_handle->func)(s, NULL); | |
3741 | goto out; | |
3742 | } | |
3743 | ||
3744 | farg = arg->func.args; | |
3745 | param = func_handle->params; | |
3746 | ||
a6d2a61a ACM |
3747 | ret = ULLONG_MAX; |
3748 | args = malloc(sizeof(*args) * func_handle->nr_args); | |
3749 | if (!args) | |
3750 | goto out; | |
3751 | ||
f7d82350 SR |
3752 | for (i = 0; i < func_handle->nr_args; i++) { |
3753 | switch (param->type) { | |
3754 | case PEVENT_FUNC_ARG_INT: | |
3755 | case PEVENT_FUNC_ARG_LONG: | |
3756 | case PEVENT_FUNC_ARG_PTR: | |
3757 | args[i] = eval_num_arg(data, size, event, farg); | |
3758 | break; | |
3759 | case PEVENT_FUNC_ARG_STRING: | |
3760 | trace_seq_init(&str); | |
3761 | print_str_arg(&str, data, size, event, "%s", -1, farg); | |
3762 | trace_seq_terminate(&str); | |
a6d2a61a ACM |
3763 | string = malloc(sizeof(*string)); |
3764 | if (!string) { | |
3388cc3e NK |
3765 | do_warning_event(event, "%s(%d): malloc str", |
3766 | __func__, __LINE__); | |
a6d2a61a ACM |
3767 | goto out_free; |
3768 | } | |
f7d82350 SR |
3769 | string->next = strings; |
3770 | string->str = strdup(str.buffer); | |
a6d2a61a ACM |
3771 | if (!string->str) { |
3772 | free(string); | |
3388cc3e NK |
3773 | do_warning_event(event, "%s(%d): malloc str", |
3774 | __func__, __LINE__); | |
a6d2a61a ACM |
3775 | goto out_free; |
3776 | } | |
0cf26013 | 3777 | args[i] = (uintptr_t)string->str; |
f7d82350 SR |
3778 | strings = string; |
3779 | trace_seq_destroy(&str); | |
3780 | break; | |
3781 | default: | |
3782 | /* | |
3783 | * Something went totally wrong, this is not | |
3784 | * an input error, something in this code broke. | |
3785 | */ | |
3388cc3e | 3786 | do_warning_event(event, "Unexpected end of arguments\n"); |
a6d2a61a | 3787 | goto out_free; |
f7d82350 SR |
3788 | } |
3789 | farg = farg->next; | |
21c69e72 | 3790 | param = param->next; |
f7d82350 SR |
3791 | } |
3792 | ||
3793 | ret = (*func_handle->func)(s, args); | |
a6d2a61a | 3794 | out_free: |
f7d82350 SR |
3795 | free(args); |
3796 | while (strings) { | |
3797 | string = strings; | |
3798 | strings = string->next; | |
3799 | free(string->str); | |
3800 | free(string); | |
3801 | } | |
3802 | ||
3803 | out: | |
3804 | /* TBD : handle return type here */ | |
3805 | return ret; | |
3806 | } | |
3807 | ||
0dbca1e3 ACM |
3808 | static void free_args(struct print_arg *args) |
3809 | { | |
3810 | struct print_arg *next; | |
3811 | ||
3812 | while (args) { | |
3813 | next = args->next; | |
3814 | ||
3815 | free_arg(args); | |
3816 | args = next; | |
3817 | } | |
3818 | } | |
3819 | ||
f7d82350 SR |
3820 | static struct print_arg *make_bprint_args(char *fmt, void *data, int size, struct event_format *event) |
3821 | { | |
3822 | struct pevent *pevent = event->pevent; | |
3823 | struct format_field *field, *ip_field; | |
3824 | struct print_arg *args, *arg, **next; | |
3825 | unsigned long long ip, val; | |
3826 | char *ptr; | |
3827 | void *bptr; | |
c2e6dc2b | 3828 | int vsize; |
f7d82350 SR |
3829 | |
3830 | field = pevent->bprint_buf_field; | |
3831 | ip_field = pevent->bprint_ip_field; | |
3832 | ||
3833 | if (!field) { | |
3834 | field = pevent_find_field(event, "buf"); | |
a6d2a61a | 3835 | if (!field) { |
3388cc3e | 3836 | do_warning_event(event, "can't find buffer field for binary printk"); |
a6d2a61a ACM |
3837 | return NULL; |
3838 | } | |
f7d82350 | 3839 | ip_field = pevent_find_field(event, "ip"); |
a6d2a61a | 3840 | if (!ip_field) { |
3388cc3e | 3841 | do_warning_event(event, "can't find ip field for binary printk"); |
a6d2a61a ACM |
3842 | return NULL; |
3843 | } | |
f7d82350 SR |
3844 | pevent->bprint_buf_field = field; |
3845 | pevent->bprint_ip_field = ip_field; | |
3846 | } | |
3847 | ||
3848 | ip = pevent_read_number(pevent, data + ip_field->offset, ip_field->size); | |
3849 | ||
3850 | /* | |
3851 | * The first arg is the IP pointer. | |
3852 | */ | |
3853 | args = alloc_arg(); | |
b1ac754b | 3854 | if (!args) { |
3388cc3e NK |
3855 | do_warning_event(event, "%s(%d): not enough memory!", |
3856 | __func__, __LINE__); | |
b1ac754b NK |
3857 | return NULL; |
3858 | } | |
f7d82350 SR |
3859 | arg = args; |
3860 | arg->next = NULL; | |
3861 | next = &arg->next; | |
3862 | ||
3863 | arg->type = PRINT_ATOM; | |
0dbca1e3 ACM |
3864 | |
3865 | if (asprintf(&arg->atom.atom, "%lld", ip) < 0) | |
3866 | goto out_free; | |
f7d82350 | 3867 | |
0883d9d7 SRRH |
3868 | /* skip the first "%pf: " */ |
3869 | for (ptr = fmt + 5, bptr = data + field->offset; | |
f7d82350 SR |
3870 | bptr < data + size && *ptr; ptr++) { |
3871 | int ls = 0; | |
3872 | ||
3873 | if (*ptr == '%') { | |
3874 | process_again: | |
3875 | ptr++; | |
3876 | switch (*ptr) { | |
3877 | case '%': | |
3878 | break; | |
3879 | case 'l': | |
3880 | ls++; | |
3881 | goto process_again; | |
3882 | case 'L': | |
3883 | ls = 2; | |
3884 | goto process_again; | |
3885 | case '0' ... '9': | |
3886 | goto process_again; | |
c2e6dc2b SR |
3887 | case '.': |
3888 | goto process_again; | |
f7d82350 SR |
3889 | case 'p': |
3890 | ls = 1; | |
3891 | /* fall through */ | |
3892 | case 'd': | |
3893 | case 'u': | |
3894 | case 'x': | |
3895 | case 'i': | |
f7d82350 SR |
3896 | switch (ls) { |
3897 | case 0: | |
c2e6dc2b | 3898 | vsize = 4; |
f7d82350 SR |
3899 | break; |
3900 | case 1: | |
c2e6dc2b | 3901 | vsize = pevent->long_size; |
f7d82350 SR |
3902 | break; |
3903 | case 2: | |
c2e6dc2b | 3904 | vsize = 8; |
c9bbabe3 | 3905 | break; |
f7d82350 | 3906 | default: |
c2e6dc2b | 3907 | vsize = ls; /* ? */ |
f7d82350 SR |
3908 | break; |
3909 | } | |
c2e6dc2b SR |
3910 | /* fall through */ |
3911 | case '*': | |
3912 | if (*ptr == '*') | |
3913 | vsize = 4; | |
3914 | ||
3915 | /* the pointers are always 4 bytes aligned */ | |
3916 | bptr = (void *)(((unsigned long)bptr + 3) & | |
3917 | ~3); | |
3918 | val = pevent_read_number(pevent, bptr, vsize); | |
3919 | bptr += vsize; | |
f7d82350 | 3920 | arg = alloc_arg(); |
b1ac754b | 3921 | if (!arg) { |
3388cc3e | 3922 | do_warning_event(event, "%s(%d): not enough memory!", |
b1ac754b NK |
3923 | __func__, __LINE__); |
3924 | goto out_free; | |
3925 | } | |
f7d82350 SR |
3926 | arg->next = NULL; |
3927 | arg->type = PRINT_ATOM; | |
0dbca1e3 ACM |
3928 | if (asprintf(&arg->atom.atom, "%lld", val) < 0) { |
3929 | free(arg); | |
3930 | goto out_free; | |
3931 | } | |
f7d82350 SR |
3932 | *next = arg; |
3933 | next = &arg->next; | |
c2e6dc2b SR |
3934 | /* |
3935 | * The '*' case means that an arg is used as the length. | |
3936 | * We need to continue to figure out for what. | |
3937 | */ | |
3938 | if (*ptr == '*') | |
3939 | goto process_again; | |
3940 | ||
f7d82350 SR |
3941 | break; |
3942 | case 's': | |
3943 | arg = alloc_arg(); | |
b1ac754b | 3944 | if (!arg) { |
3388cc3e | 3945 | do_warning_event(event, "%s(%d): not enough memory!", |
b1ac754b NK |
3946 | __func__, __LINE__); |
3947 | goto out_free; | |
3948 | } | |
f7d82350 SR |
3949 | arg->next = NULL; |
3950 | arg->type = PRINT_BSTRING; | |
3951 | arg->string.string = strdup(bptr); | |
ca63858e | 3952 | if (!arg->string.string) |
a6d2a61a | 3953 | goto out_free; |
f7d82350 SR |
3954 | bptr += strlen(bptr) + 1; |
3955 | *next = arg; | |
3956 | next = &arg->next; | |
3957 | default: | |
3958 | break; | |
3959 | } | |
3960 | } | |
3961 | } | |
3962 | ||
3963 | return args; | |
f7d82350 | 3964 | |
0dbca1e3 ACM |
3965 | out_free: |
3966 | free_args(args); | |
3967 | return NULL; | |
f7d82350 SR |
3968 | } |
3969 | ||
3970 | static char * | |
1d037ca1 IT |
3971 | get_bprint_format(void *data, int size __maybe_unused, |
3972 | struct event_format *event) | |
f7d82350 SR |
3973 | { |
3974 | struct pevent *pevent = event->pevent; | |
3975 | unsigned long long addr; | |
3976 | struct format_field *field; | |
3977 | struct printk_map *printk; | |
3978 | char *format; | |
f7d82350 SR |
3979 | |
3980 | field = pevent->bprint_fmt_field; | |
3981 | ||
3982 | if (!field) { | |
3983 | field = pevent_find_field(event, "fmt"); | |
a6d2a61a | 3984 | if (!field) { |
3388cc3e | 3985 | do_warning_event(event, "can't find format field for binary printk"); |
a6d2a61a ACM |
3986 | return NULL; |
3987 | } | |
f7d82350 SR |
3988 | pevent->bprint_fmt_field = field; |
3989 | } | |
3990 | ||
3991 | addr = pevent_read_number(pevent, data + field->offset, field->size); | |
3992 | ||
3993 | printk = find_printk(pevent, addr); | |
3994 | if (!printk) { | |
0883d9d7 | 3995 | if (asprintf(&format, "%%pf: (NO FORMAT FOUND at %llx)\n", addr) < 0) |
0dbca1e3 | 3996 | return NULL; |
f7d82350 SR |
3997 | return format; |
3998 | } | |
3999 | ||
0883d9d7 | 4000 | if (asprintf(&format, "%s: %s", "%pf", printk->printk) < 0) |
0dbca1e3 | 4001 | return NULL; |
f7d82350 SR |
4002 | |
4003 | return format; | |
4004 | } | |
4005 | ||
4006 | static void print_mac_arg(struct trace_seq *s, int mac, void *data, int size, | |
4007 | struct event_format *event, struct print_arg *arg) | |
4008 | { | |
4009 | unsigned char *buf; | |
27f94d52 | 4010 | const char *fmt = "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x"; |
f7d82350 SR |
4011 | |
4012 | if (arg->type == PRINT_FUNC) { | |
4013 | process_defined_func(s, data, size, event, arg); | |
4014 | return; | |
4015 | } | |
4016 | ||
4017 | if (arg->type != PRINT_FIELD) { | |
4018 | trace_seq_printf(s, "ARG TYPE NOT FIELD BUT %d", | |
4019 | arg->type); | |
4020 | return; | |
4021 | } | |
4022 | ||
4023 | if (mac == 'm') | |
4024 | fmt = "%.2x%.2x%.2x%.2x%.2x%.2x"; | |
4025 | if (!arg->field.field) { | |
4026 | arg->field.field = | |
4027 | pevent_find_any_field(event, arg->field.name); | |
a6d2a61a | 4028 | if (!arg->field.field) { |
3388cc3e NK |
4029 | do_warning_event(event, "%s: field %s not found", |
4030 | __func__, arg->field.name); | |
a6d2a61a ACM |
4031 | return; |
4032 | } | |
f7d82350 SR |
4033 | } |
4034 | if (arg->field.field->size != 6) { | |
4035 | trace_seq_printf(s, "INVALIDMAC"); | |
4036 | return; | |
4037 | } | |
4038 | buf = data + arg->field.field->offset; | |
4039 | trace_seq_printf(s, fmt, buf[0], buf[1], buf[2], buf[3], buf[4], buf[5]); | |
4040 | } | |
4041 | ||
600da3cf NK |
4042 | static int is_printable_array(char *p, unsigned int len) |
4043 | { | |
4044 | unsigned int i; | |
4045 | ||
4046 | for (i = 0; i < len && p[i]; i++) | |
5efb9fbd | 4047 | if (!isprint(p[i]) && !isspace(p[i])) |
600da3cf NK |
4048 | return 0; |
4049 | return 1; | |
4050 | } | |
4051 | ||
ca383a4d ACM |
4052 | static void print_event_fields(struct trace_seq *s, void *data, |
4053 | int size __maybe_unused, | |
f7d82350 SR |
4054 | struct event_format *event) |
4055 | { | |
4056 | struct format_field *field; | |
4057 | unsigned long long val; | |
4058 | unsigned int offset, len, i; | |
4059 | ||
4060 | field = event->format.fields; | |
4061 | while (field) { | |
4062 | trace_seq_printf(s, " %s=", field->name); | |
4063 | if (field->flags & FIELD_IS_ARRAY) { | |
4064 | offset = field->offset; | |
4065 | len = field->size; | |
4066 | if (field->flags & FIELD_IS_DYNAMIC) { | |
4067 | val = pevent_read_number(event->pevent, data + offset, len); | |
4068 | offset = val; | |
4069 | len = offset >> 16; | |
4070 | offset &= 0xffff; | |
4071 | } | |
600da3cf NK |
4072 | if (field->flags & FIELD_IS_STRING && |
4073 | is_printable_array(data + offset, len)) { | |
f7d82350 SR |
4074 | trace_seq_printf(s, "%s", (char *)data + offset); |
4075 | } else { | |
4076 | trace_seq_puts(s, "ARRAY["); | |
4077 | for (i = 0; i < len; i++) { | |
4078 | if (i) | |
4079 | trace_seq_puts(s, ", "); | |
4080 | trace_seq_printf(s, "%02x", | |
4081 | *((unsigned char *)data + offset + i)); | |
4082 | } | |
4083 | trace_seq_putc(s, ']'); | |
600da3cf | 4084 | field->flags &= ~FIELD_IS_STRING; |
f7d82350 SR |
4085 | } |
4086 | } else { | |
4087 | val = pevent_read_number(event->pevent, data + field->offset, | |
4088 | field->size); | |
4089 | if (field->flags & FIELD_IS_POINTER) { | |
4090 | trace_seq_printf(s, "0x%llx", val); | |
4091 | } else if (field->flags & FIELD_IS_SIGNED) { | |
4092 | switch (field->size) { | |
4093 | case 4: | |
4094 | /* | |
4095 | * If field is long then print it in hex. | |
4096 | * A long usually stores pointers. | |
4097 | */ | |
4098 | if (field->flags & FIELD_IS_LONG) | |
4099 | trace_seq_printf(s, "0x%x", (int)val); | |
4100 | else | |
4101 | trace_seq_printf(s, "%d", (int)val); | |
4102 | break; | |
4103 | case 2: | |
4104 | trace_seq_printf(s, "%2d", (short)val); | |
4105 | break; | |
4106 | case 1: | |
4107 | trace_seq_printf(s, "%1d", (char)val); | |
4108 | break; | |
4109 | default: | |
4110 | trace_seq_printf(s, "%lld", val); | |
4111 | } | |
4112 | } else { | |
4113 | if (field->flags & FIELD_IS_LONG) | |
4114 | trace_seq_printf(s, "0x%llx", val); | |
4115 | else | |
4116 | trace_seq_printf(s, "%llu", val); | |
4117 | } | |
4118 | } | |
4119 | field = field->next; | |
4120 | } | |
4121 | } | |
4122 | ||
4123 | static void pretty_print(struct trace_seq *s, void *data, int size, struct event_format *event) | |
4124 | { | |
4125 | struct pevent *pevent = event->pevent; | |
4126 | struct print_fmt *print_fmt = &event->print_fmt; | |
4127 | struct print_arg *arg = print_fmt->args; | |
4128 | struct print_arg *args = NULL; | |
4129 | const char *ptr = print_fmt->format; | |
4130 | unsigned long long val; | |
4131 | struct func_map *func; | |
4132 | const char *saveptr; | |
12e55569 | 4133 | struct trace_seq p; |
f7d82350 SR |
4134 | char *bprint_fmt = NULL; |
4135 | char format[32]; | |
4136 | int show_func; | |
4137 | int len_as_arg; | |
4138 | int len_arg; | |
4139 | int len; | |
4140 | int ls; | |
4141 | ||
4142 | if (event->flags & EVENT_FL_FAILED) { | |
4143 | trace_seq_printf(s, "[FAILED TO PARSE]"); | |
4144 | print_event_fields(s, data, size, event); | |
4145 | return; | |
4146 | } | |
4147 | ||
4148 | if (event->flags & EVENT_FL_ISBPRINT) { | |
4149 | bprint_fmt = get_bprint_format(data, size, event); | |
4150 | args = make_bprint_args(bprint_fmt, data, size, event); | |
4151 | arg = args; | |
4152 | ptr = bprint_fmt; | |
4153 | } | |
4154 | ||
4155 | for (; *ptr; ptr++) { | |
4156 | ls = 0; | |
4157 | if (*ptr == '\\') { | |
4158 | ptr++; | |
4159 | switch (*ptr) { | |
4160 | case 'n': | |
4161 | trace_seq_putc(s, '\n'); | |
4162 | break; | |
4163 | case 't': | |
4164 | trace_seq_putc(s, '\t'); | |
4165 | break; | |
4166 | case 'r': | |
4167 | trace_seq_putc(s, '\r'); | |
4168 | break; | |
4169 | case '\\': | |
4170 | trace_seq_putc(s, '\\'); | |
4171 | break; | |
4172 | default: | |
4173 | trace_seq_putc(s, *ptr); | |
4174 | break; | |
4175 | } | |
4176 | ||
4177 | } else if (*ptr == '%') { | |
4178 | saveptr = ptr; | |
4179 | show_func = 0; | |
4180 | len_as_arg = 0; | |
4181 | cont_process: | |
4182 | ptr++; | |
4183 | switch (*ptr) { | |
4184 | case '%': | |
4185 | trace_seq_putc(s, '%'); | |
4186 | break; | |
4187 | case '#': | |
4188 | /* FIXME: need to handle properly */ | |
4189 | goto cont_process; | |
4190 | case 'h': | |
4191 | ls--; | |
4192 | goto cont_process; | |
4193 | case 'l': | |
4194 | ls++; | |
4195 | goto cont_process; | |
4196 | case 'L': | |
4197 | ls = 2; | |
4198 | goto cont_process; | |
4199 | case '*': | |
4200 | /* The argument is the length. */ | |
245c5a18 | 4201 | if (!arg) { |
3388cc3e | 4202 | do_warning_event(event, "no argument match"); |
245c5a18 NK |
4203 | event->flags |= EVENT_FL_FAILED; |
4204 | goto out_failed; | |
4205 | } | |
f7d82350 SR |
4206 | len_arg = eval_num_arg(data, size, event, arg); |
4207 | len_as_arg = 1; | |
4208 | arg = arg->next; | |
4209 | goto cont_process; | |
4210 | case '.': | |
4211 | case 'z': | |
4212 | case 'Z': | |
4213 | case '0' ... '9': | |
4214 | goto cont_process; | |
4215 | case 'p': | |
4216 | if (pevent->long_size == 4) | |
4217 | ls = 1; | |
4218 | else | |
4219 | ls = 2; | |
4220 | ||
4221 | if (*(ptr+1) == 'F' || | |
4222 | *(ptr+1) == 'f') { | |
4223 | ptr++; | |
4224 | show_func = *ptr; | |
4225 | } else if (*(ptr+1) == 'M' || *(ptr+1) == 'm') { | |
4226 | print_mac_arg(s, *(ptr+1), data, size, event, arg); | |
4227 | ptr++; | |
aaf05c72 | 4228 | arg = arg->next; |
f7d82350 SR |
4229 | break; |
4230 | } | |
4231 | ||
4232 | /* fall through */ | |
4233 | case 'd': | |
4234 | case 'i': | |
4235 | case 'x': | |
4236 | case 'X': | |
4237 | case 'u': | |
245c5a18 | 4238 | if (!arg) { |
3388cc3e | 4239 | do_warning_event(event, "no argument match"); |
245c5a18 NK |
4240 | event->flags |= EVENT_FL_FAILED; |
4241 | goto out_failed; | |
4242 | } | |
f7d82350 SR |
4243 | |
4244 | len = ((unsigned long)ptr + 1) - | |
4245 | (unsigned long)saveptr; | |
4246 | ||
4247 | /* should never happen */ | |
245c5a18 | 4248 | if (len > 31) { |
3388cc3e | 4249 | do_warning_event(event, "bad format!"); |
245c5a18 NK |
4250 | event->flags |= EVENT_FL_FAILED; |
4251 | len = 31; | |
4252 | } | |
f7d82350 SR |
4253 | |
4254 | memcpy(format, saveptr, len); | |
4255 | format[len] = 0; | |
4256 | ||
4257 | val = eval_num_arg(data, size, event, arg); | |
4258 | arg = arg->next; | |
4259 | ||
4260 | if (show_func) { | |
4261 | func = find_func(pevent, val); | |
4262 | if (func) { | |
4263 | trace_seq_puts(s, func->func); | |
4264 | if (show_func == 'F') | |
4265 | trace_seq_printf(s, | |
4266 | "+0x%llx", | |
4267 | val - func->addr); | |
4268 | break; | |
4269 | } | |
4270 | } | |
c5b35b73 WM |
4271 | if (pevent->long_size == 8 && ls && |
4272 | sizeof(long) != 8) { | |
f7d82350 SR |
4273 | char *p; |
4274 | ||
4275 | ls = 2; | |
4276 | /* make %l into %ll */ | |
4277 | p = strchr(format, 'l'); | |
4278 | if (p) | |
c5b35b73 | 4279 | memmove(p+1, p, strlen(p)+1); |
f7d82350 SR |
4280 | else if (strcmp(format, "%p") == 0) |
4281 | strcpy(format, "0x%llx"); | |
4282 | } | |
4283 | switch (ls) { | |
4284 | case -2: | |
4285 | if (len_as_arg) | |
4286 | trace_seq_printf(s, format, len_arg, (char)val); | |
4287 | else | |
4288 | trace_seq_printf(s, format, (char)val); | |
4289 | break; | |
4290 | case -1: | |
4291 | if (len_as_arg) | |
4292 | trace_seq_printf(s, format, len_arg, (short)val); | |
4293 | else | |
4294 | trace_seq_printf(s, format, (short)val); | |
4295 | break; | |
4296 | case 0: | |
4297 | if (len_as_arg) | |
4298 | trace_seq_printf(s, format, len_arg, (int)val); | |
4299 | else | |
4300 | trace_seq_printf(s, format, (int)val); | |
4301 | break; | |
4302 | case 1: | |
4303 | if (len_as_arg) | |
4304 | trace_seq_printf(s, format, len_arg, (long)val); | |
4305 | else | |
4306 | trace_seq_printf(s, format, (long)val); | |
4307 | break; | |
4308 | case 2: | |
4309 | if (len_as_arg) | |
4310 | trace_seq_printf(s, format, len_arg, | |
4311 | (long long)val); | |
4312 | else | |
4313 | trace_seq_printf(s, format, (long long)val); | |
4314 | break; | |
4315 | default: | |
3388cc3e | 4316 | do_warning_event(event, "bad count (%d)", ls); |
245c5a18 | 4317 | event->flags |= EVENT_FL_FAILED; |
f7d82350 SR |
4318 | } |
4319 | break; | |
4320 | case 's': | |
245c5a18 | 4321 | if (!arg) { |
3388cc3e | 4322 | do_warning_event(event, "no matching argument"); |
245c5a18 NK |
4323 | event->flags |= EVENT_FL_FAILED; |
4324 | goto out_failed; | |
4325 | } | |
f7d82350 SR |
4326 | |
4327 | len = ((unsigned long)ptr + 1) - | |
4328 | (unsigned long)saveptr; | |
4329 | ||
4330 | /* should never happen */ | |
245c5a18 | 4331 | if (len > 31) { |
3388cc3e | 4332 | do_warning_event(event, "bad format!"); |
245c5a18 NK |
4333 | event->flags |= EVENT_FL_FAILED; |
4334 | len = 31; | |
4335 | } | |
f7d82350 SR |
4336 | |
4337 | memcpy(format, saveptr, len); | |
4338 | format[len] = 0; | |
4339 | if (!len_as_arg) | |
4340 | len_arg = -1; | |
12e55569 SR |
4341 | /* Use helper trace_seq */ |
4342 | trace_seq_init(&p); | |
4343 | print_str_arg(&p, data, size, event, | |
f7d82350 | 4344 | format, len_arg, arg); |
12e55569 SR |
4345 | trace_seq_terminate(&p); |
4346 | trace_seq_puts(s, p.buffer); | |
f7d82350 SR |
4347 | arg = arg->next; |
4348 | break; | |
4349 | default: | |
4350 | trace_seq_printf(s, ">%c<", *ptr); | |
4351 | ||
4352 | } | |
4353 | } else | |
4354 | trace_seq_putc(s, *ptr); | |
4355 | } | |
4356 | ||
245c5a18 NK |
4357 | if (event->flags & EVENT_FL_FAILED) { |
4358 | out_failed: | |
4359 | trace_seq_printf(s, "[FAILED TO PARSE]"); | |
4360 | } | |
4361 | ||
f7d82350 SR |
4362 | if (args) { |
4363 | free_args(args); | |
4364 | free(bprint_fmt); | |
4365 | } | |
4366 | } | |
4367 | ||
4368 | /** | |
4369 | * pevent_data_lat_fmt - parse the data for the latency format | |
4370 | * @pevent: a handle to the pevent | |
4371 | * @s: the trace_seq to write to | |
16e6b8fd | 4372 | * @record: the record to read from |
f7d82350 SR |
4373 | * |
4374 | * This parses out the Latency format (interrupts disabled, | |
4375 | * need rescheduling, in hard/soft interrupt, preempt count | |
4376 | * and lock depth) and places it into the trace_seq. | |
4377 | */ | |
4378 | void pevent_data_lat_fmt(struct pevent *pevent, | |
1c698186 | 4379 | struct trace_seq *s, struct pevent_record *record) |
f7d82350 SR |
4380 | { |
4381 | static int check_lock_depth = 1; | |
0866a97e | 4382 | static int check_migrate_disable = 1; |
f7d82350 | 4383 | static int lock_depth_exists; |
0866a97e | 4384 | static int migrate_disable_exists; |
f7d82350 SR |
4385 | unsigned int lat_flags; |
4386 | unsigned int pc; | |
4387 | int lock_depth; | |
0866a97e | 4388 | int migrate_disable; |
f7d82350 SR |
4389 | int hardirq; |
4390 | int softirq; | |
4391 | void *data = record->data; | |
4392 | ||
4393 | lat_flags = parse_common_flags(pevent, data); | |
4394 | pc = parse_common_pc(pevent, data); | |
4395 | /* lock_depth may not always exist */ | |
f7d82350 SR |
4396 | if (lock_depth_exists) |
4397 | lock_depth = parse_common_lock_depth(pevent, data); | |
0866a97e SR |
4398 | else if (check_lock_depth) { |
4399 | lock_depth = parse_common_lock_depth(pevent, data); | |
4400 | if (lock_depth < 0) | |
4401 | check_lock_depth = 0; | |
4402 | else | |
4403 | lock_depth_exists = 1; | |
4404 | } | |
4405 | ||
4406 | /* migrate_disable may not always exist */ | |
4407 | if (migrate_disable_exists) | |
4408 | migrate_disable = parse_common_migrate_disable(pevent, data); | |
4409 | else if (check_migrate_disable) { | |
4410 | migrate_disable = parse_common_migrate_disable(pevent, data); | |
4411 | if (migrate_disable < 0) | |
4412 | check_migrate_disable = 0; | |
4413 | else | |
4414 | migrate_disable_exists = 1; | |
4415 | } | |
f7d82350 SR |
4416 | |
4417 | hardirq = lat_flags & TRACE_FLAG_HARDIRQ; | |
4418 | softirq = lat_flags & TRACE_FLAG_SOFTIRQ; | |
4419 | ||
4420 | trace_seq_printf(s, "%c%c%c", | |
4421 | (lat_flags & TRACE_FLAG_IRQS_OFF) ? 'd' : | |
4422 | (lat_flags & TRACE_FLAG_IRQS_NOSUPPORT) ? | |
4423 | 'X' : '.', | |
4424 | (lat_flags & TRACE_FLAG_NEED_RESCHED) ? | |
4425 | 'N' : '.', | |
4426 | (hardirq && softirq) ? 'H' : | |
4427 | hardirq ? 'h' : softirq ? 's' : '.'); | |
4428 | ||
4429 | if (pc) | |
4430 | trace_seq_printf(s, "%x", pc); | |
4431 | else | |
4432 | trace_seq_putc(s, '.'); | |
4433 | ||
0866a97e SR |
4434 | if (migrate_disable_exists) { |
4435 | if (migrate_disable < 0) | |
4436 | trace_seq_putc(s, '.'); | |
4437 | else | |
4438 | trace_seq_printf(s, "%d", migrate_disable); | |
4439 | } | |
4440 | ||
f7d82350 SR |
4441 | if (lock_depth_exists) { |
4442 | if (lock_depth < 0) | |
4443 | trace_seq_putc(s, '.'); | |
4444 | else | |
4445 | trace_seq_printf(s, "%d", lock_depth); | |
4446 | } | |
4447 | ||
4448 | trace_seq_terminate(s); | |
4449 | } | |
4450 | ||
4451 | /** | |
4452 | * pevent_data_type - parse out the given event type | |
4453 | * @pevent: a handle to the pevent | |
4454 | * @rec: the record to read from | |
4455 | * | |
4456 | * This returns the event id from the @rec. | |
4457 | */ | |
1c698186 | 4458 | int pevent_data_type(struct pevent *pevent, struct pevent_record *rec) |
f7d82350 SR |
4459 | { |
4460 | return trace_parse_common_type(pevent, rec->data); | |
4461 | } | |
4462 | ||
4463 | /** | |
4464 | * pevent_data_event_from_type - find the event by a given type | |
4465 | * @pevent: a handle to the pevent | |
4466 | * @type: the type of the event. | |
4467 | * | |
4468 | * This returns the event form a given @type; | |
4469 | */ | |
4470 | struct event_format *pevent_data_event_from_type(struct pevent *pevent, int type) | |
4471 | { | |
4472 | return pevent_find_event(pevent, type); | |
4473 | } | |
4474 | ||
4475 | /** | |
4476 | * pevent_data_pid - parse the PID from raw data | |
4477 | * @pevent: a handle to the pevent | |
4478 | * @rec: the record to parse | |
4479 | * | |
4480 | * This returns the PID from a raw data. | |
4481 | */ | |
1c698186 | 4482 | int pevent_data_pid(struct pevent *pevent, struct pevent_record *rec) |
f7d82350 SR |
4483 | { |
4484 | return parse_common_pid(pevent, rec->data); | |
4485 | } | |
4486 | ||
4487 | /** | |
4488 | * pevent_data_comm_from_pid - return the command line from PID | |
4489 | * @pevent: a handle to the pevent | |
4490 | * @pid: the PID of the task to search for | |
4491 | * | |
4492 | * This returns a pointer to the command line that has the given | |
4493 | * @pid. | |
4494 | */ | |
4495 | const char *pevent_data_comm_from_pid(struct pevent *pevent, int pid) | |
4496 | { | |
4497 | const char *comm; | |
4498 | ||
4499 | comm = find_cmdline(pevent, pid); | |
4500 | return comm; | |
4501 | } | |
4502 | ||
4503 | /** | |
4504 | * pevent_data_comm_from_pid - parse the data into the print format | |
4505 | * @s: the trace_seq to write to | |
4506 | * @event: the handle to the event | |
16e6b8fd | 4507 | * @record: the record to read from |
f7d82350 SR |
4508 | * |
4509 | * This parses the raw @data using the given @event information and | |
4510 | * writes the print format into the trace_seq. | |
4511 | */ | |
4512 | void pevent_event_info(struct trace_seq *s, struct event_format *event, | |
1c698186 | 4513 | struct pevent_record *record) |
f7d82350 SR |
4514 | { |
4515 | int print_pretty = 1; | |
4516 | ||
c6c2b960 | 4517 | if (event->pevent->print_raw || (event->flags & EVENT_FL_PRINTRAW)) |
f7d82350 SR |
4518 | print_event_fields(s, record->data, record->size, event); |
4519 | else { | |
4520 | ||
c6c2b960 | 4521 | if (event->handler && !(event->flags & EVENT_FL_NOHANDLE)) |
f7d82350 SR |
4522 | print_pretty = event->handler(s, record, event, |
4523 | event->context); | |
4524 | ||
4525 | if (print_pretty) | |
4526 | pretty_print(s, record->data, record->size, event); | |
4527 | } | |
4528 | ||
4529 | trace_seq_terminate(s); | |
4530 | } | |
4531 | ||
1b372ca5 YY |
4532 | static bool is_timestamp_in_us(char *trace_clock, bool use_trace_clock) |
4533 | { | |
4534 | if (!use_trace_clock) | |
4535 | return true; | |
4536 | ||
4537 | if (!strcmp(trace_clock, "local") || !strcmp(trace_clock, "global") | |
4538 | || !strcmp(trace_clock, "uptime") || !strcmp(trace_clock, "perf")) | |
4539 | return true; | |
4540 | ||
4541 | /* trace_clock is setting in tsc or counter mode */ | |
4542 | return false; | |
4543 | } | |
4544 | ||
f7d82350 | 4545 | void pevent_print_event(struct pevent *pevent, struct trace_seq *s, |
1b372ca5 | 4546 | struct pevent_record *record, bool use_trace_clock) |
f7d82350 | 4547 | { |
27f94d52 | 4548 | static const char *spaces = " "; /* 20 spaces */ |
f7d82350 SR |
4549 | struct event_format *event; |
4550 | unsigned long secs; | |
4551 | unsigned long usecs; | |
4dc1024a | 4552 | unsigned long nsecs; |
f7d82350 SR |
4553 | const char *comm; |
4554 | void *data = record->data; | |
4555 | int type; | |
4556 | int pid; | |
4557 | int len; | |
4dc1024a | 4558 | int p; |
1b372ca5 | 4559 | bool use_usec_format; |
f7d82350 | 4560 | |
1b372ca5 YY |
4561 | use_usec_format = is_timestamp_in_us(pevent->trace_clock, |
4562 | use_trace_clock); | |
4563 | if (use_usec_format) { | |
4564 | secs = record->ts / NSECS_PER_SEC; | |
4565 | nsecs = record->ts - secs * NSECS_PER_SEC; | |
4566 | } | |
f7d82350 SR |
4567 | |
4568 | if (record->size < 0) { | |
4569 | do_warning("ug! negative record size %d", record->size); | |
4570 | return; | |
4571 | } | |
4572 | ||
4573 | type = trace_parse_common_type(pevent, data); | |
4574 | ||
4575 | event = pevent_find_event(pevent, type); | |
4576 | if (!event) { | |
4577 | do_warning("ug! no event found for type %d", type); | |
4578 | return; | |
4579 | } | |
4580 | ||
4581 | pid = parse_common_pid(pevent, data); | |
4582 | comm = find_cmdline(pevent, pid); | |
4583 | ||
4584 | if (pevent->latency_format) { | |
4585 | trace_seq_printf(s, "%8.8s-%-5d %3d", | |
4586 | comm, pid, record->cpu); | |
4587 | pevent_data_lat_fmt(pevent, s, record); | |
4588 | } else | |
4589 | trace_seq_printf(s, "%16s-%-5d [%03d]", comm, pid, record->cpu); | |
4590 | ||
1b372ca5 YY |
4591 | if (use_usec_format) { |
4592 | if (pevent->flags & PEVENT_NSEC_OUTPUT) { | |
4593 | usecs = nsecs; | |
4594 | p = 9; | |
4595 | } else { | |
4596 | usecs = (nsecs + 500) / NSECS_PER_USEC; | |
4597 | p = 6; | |
4598 | } | |
4dc1024a | 4599 | |
1b372ca5 YY |
4600 | trace_seq_printf(s, " %5lu.%0*lu: %s: ", |
4601 | secs, p, usecs, event->name); | |
4602 | } else | |
4603 | trace_seq_printf(s, " %12llu: %s: ", | |
4604 | record->ts, event->name); | |
f7d82350 SR |
4605 | |
4606 | /* Space out the event names evenly. */ | |
4607 | len = strlen(event->name); | |
4608 | if (len < 20) | |
4609 | trace_seq_printf(s, "%.*s", 20 - len, spaces); | |
4610 | ||
4611 | pevent_event_info(s, event, record); | |
4612 | } | |
4613 | ||
4614 | static int events_id_cmp(const void *a, const void *b) | |
4615 | { | |
4616 | struct event_format * const * ea = a; | |
4617 | struct event_format * const * eb = b; | |
4618 | ||
4619 | if ((*ea)->id < (*eb)->id) | |
4620 | return -1; | |
4621 | ||
4622 | if ((*ea)->id > (*eb)->id) | |
4623 | return 1; | |
4624 | ||
4625 | return 0; | |
4626 | } | |
4627 | ||
4628 | static int events_name_cmp(const void *a, const void *b) | |
4629 | { | |
4630 | struct event_format * const * ea = a; | |
4631 | struct event_format * const * eb = b; | |
4632 | int res; | |
4633 | ||
4634 | res = strcmp((*ea)->name, (*eb)->name); | |
4635 | if (res) | |
4636 | return res; | |
4637 | ||
4638 | res = strcmp((*ea)->system, (*eb)->system); | |
4639 | if (res) | |
4640 | return res; | |
4641 | ||
4642 | return events_id_cmp(a, b); | |
4643 | } | |
4644 | ||
4645 | static int events_system_cmp(const void *a, const void *b) | |
4646 | { | |
4647 | struct event_format * const * ea = a; | |
4648 | struct event_format * const * eb = b; | |
4649 | int res; | |
4650 | ||
4651 | res = strcmp((*ea)->system, (*eb)->system); | |
4652 | if (res) | |
4653 | return res; | |
4654 | ||
4655 | res = strcmp((*ea)->name, (*eb)->name); | |
4656 | if (res) | |
4657 | return res; | |
4658 | ||
4659 | return events_id_cmp(a, b); | |
4660 | } | |
4661 | ||
4662 | struct event_format **pevent_list_events(struct pevent *pevent, enum event_sort_type sort_type) | |
4663 | { | |
4664 | struct event_format **events; | |
4665 | int (*sort)(const void *a, const void *b); | |
4666 | ||
4667 | events = pevent->sort_events; | |
4668 | ||
4669 | if (events && pevent->last_type == sort_type) | |
4670 | return events; | |
4671 | ||
4672 | if (!events) { | |
4673 | events = malloc(sizeof(*events) * (pevent->nr_events + 1)); | |
4674 | if (!events) | |
4675 | return NULL; | |
4676 | ||
4677 | memcpy(events, pevent->events, sizeof(*events) * pevent->nr_events); | |
4678 | events[pevent->nr_events] = NULL; | |
4679 | ||
4680 | pevent->sort_events = events; | |
4681 | ||
4682 | /* the internal events are sorted by id */ | |
4683 | if (sort_type == EVENT_SORT_ID) { | |
4684 | pevent->last_type = sort_type; | |
4685 | return events; | |
4686 | } | |
4687 | } | |
4688 | ||
4689 | switch (sort_type) { | |
4690 | case EVENT_SORT_ID: | |
4691 | sort = events_id_cmp; | |
4692 | break; | |
4693 | case EVENT_SORT_NAME: | |
4694 | sort = events_name_cmp; | |
4695 | break; | |
4696 | case EVENT_SORT_SYSTEM: | |
4697 | sort = events_system_cmp; | |
4698 | break; | |
4699 | default: | |
4700 | return events; | |
4701 | } | |
4702 | ||
4703 | qsort(events, pevent->nr_events, sizeof(*events), sort); | |
4704 | pevent->last_type = sort_type; | |
4705 | ||
4706 | return events; | |
4707 | } | |
4708 | ||
4709 | static struct format_field ** | |
4710 | get_event_fields(const char *type, const char *name, | |
4711 | int count, struct format_field *list) | |
4712 | { | |
4713 | struct format_field **fields; | |
4714 | struct format_field *field; | |
4715 | int i = 0; | |
4716 | ||
a6d2a61a ACM |
4717 | fields = malloc(sizeof(*fields) * (count + 1)); |
4718 | if (!fields) | |
4719 | return NULL; | |
4720 | ||
f7d82350 SR |
4721 | for (field = list; field; field = field->next) { |
4722 | fields[i++] = field; | |
4723 | if (i == count + 1) { | |
4724 | do_warning("event %s has more %s fields than specified", | |
4725 | name, type); | |
4726 | i--; | |
4727 | break; | |
4728 | } | |
4729 | } | |
4730 | ||
4731 | if (i != count) | |
4732 | do_warning("event %s has less %s fields than specified", | |
4733 | name, type); | |
4734 | ||
4735 | fields[i] = NULL; | |
4736 | ||
4737 | return fields; | |
4738 | } | |
4739 | ||
4740 | /** | |
4741 | * pevent_event_common_fields - return a list of common fields for an event | |
4742 | * @event: the event to return the common fields of. | |
4743 | * | |
4744 | * Returns an allocated array of fields. The last item in the array is NULL. | |
4745 | * The array must be freed with free(). | |
4746 | */ | |
4747 | struct format_field **pevent_event_common_fields(struct event_format *event) | |
4748 | { | |
4749 | return get_event_fields("common", event->name, | |
4750 | event->format.nr_common, | |
4751 | event->format.common_fields); | |
4752 | } | |
4753 | ||
4754 | /** | |
4755 | * pevent_event_fields - return a list of event specific fields for an event | |
4756 | * @event: the event to return the fields of. | |
4757 | * | |
4758 | * Returns an allocated array of fields. The last item in the array is NULL. | |
4759 | * The array must be freed with free(). | |
4760 | */ | |
4761 | struct format_field **pevent_event_fields(struct event_format *event) | |
4762 | { | |
4763 | return get_event_fields("event", event->name, | |
4764 | event->format.nr_fields, | |
4765 | event->format.fields); | |
4766 | } | |
4767 | ||
4768 | static void print_fields(struct trace_seq *s, struct print_flag_sym *field) | |
4769 | { | |
4770 | trace_seq_printf(s, "{ %s, %s }", field->value, field->str); | |
4771 | if (field->next) { | |
4772 | trace_seq_puts(s, ", "); | |
4773 | print_fields(s, field->next); | |
4774 | } | |
4775 | } | |
4776 | ||
4777 | /* for debugging */ | |
4778 | static void print_args(struct print_arg *args) | |
4779 | { | |
4780 | int print_paren = 1; | |
4781 | struct trace_seq s; | |
4782 | ||
4783 | switch (args->type) { | |
4784 | case PRINT_NULL: | |
4785 | printf("null"); | |
4786 | break; | |
4787 | case PRINT_ATOM: | |
4788 | printf("%s", args->atom.atom); | |
4789 | break; | |
4790 | case PRINT_FIELD: | |
4791 | printf("REC->%s", args->field.name); | |
4792 | break; | |
4793 | case PRINT_FLAGS: | |
4794 | printf("__print_flags("); | |
4795 | print_args(args->flags.field); | |
4796 | printf(", %s, ", args->flags.delim); | |
4797 | trace_seq_init(&s); | |
4798 | print_fields(&s, args->flags.flags); | |
4799 | trace_seq_do_printf(&s); | |
4800 | trace_seq_destroy(&s); | |
4801 | printf(")"); | |
4802 | break; | |
4803 | case PRINT_SYMBOL: | |
4804 | printf("__print_symbolic("); | |
4805 | print_args(args->symbol.field); | |
4806 | printf(", "); | |
4807 | trace_seq_init(&s); | |
4808 | print_fields(&s, args->symbol.symbols); | |
4809 | trace_seq_do_printf(&s); | |
4810 | trace_seq_destroy(&s); | |
4811 | printf(")"); | |
4812 | break; | |
e080e6f1 NK |
4813 | case PRINT_HEX: |
4814 | printf("__print_hex("); | |
4815 | print_args(args->hex.field); | |
4816 | printf(", "); | |
4817 | print_args(args->hex.size); | |
4818 | printf(")"); | |
4819 | break; | |
f7d82350 SR |
4820 | case PRINT_STRING: |
4821 | case PRINT_BSTRING: | |
4822 | printf("__get_str(%s)", args->string.string); | |
4823 | break; | |
4824 | case PRINT_TYPE: | |
4825 | printf("(%s)", args->typecast.type); | |
4826 | print_args(args->typecast.item); | |
4827 | break; | |
4828 | case PRINT_OP: | |
4829 | if (strcmp(args->op.op, ":") == 0) | |
4830 | print_paren = 0; | |
4831 | if (print_paren) | |
4832 | printf("("); | |
4833 | print_args(args->op.left); | |
4834 | printf(" %s ", args->op.op); | |
4835 | print_args(args->op.right); | |
4836 | if (print_paren) | |
4837 | printf(")"); | |
4838 | break; | |
4839 | default: | |
4840 | /* we should warn... */ | |
4841 | return; | |
4842 | } | |
4843 | if (args->next) { | |
4844 | printf("\n"); | |
4845 | print_args(args->next); | |
4846 | } | |
4847 | } | |
4848 | ||
4849 | static void parse_header_field(const char *field, | |
4850 | int *offset, int *size, int mandatory) | |
4851 | { | |
4852 | unsigned long long save_input_buf_ptr; | |
4853 | unsigned long long save_input_buf_siz; | |
4854 | char *token; | |
4855 | int type; | |
4856 | ||
4857 | save_input_buf_ptr = input_buf_ptr; | |
4858 | save_input_buf_siz = input_buf_siz; | |
4859 | ||
4860 | if (read_expected(EVENT_ITEM, "field") < 0) | |
4861 | return; | |
4862 | if (read_expected(EVENT_OP, ":") < 0) | |
4863 | return; | |
4864 | ||
4865 | /* type */ | |
4866 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
4867 | goto fail; | |
4868 | free_token(token); | |
4869 | ||
4870 | /* | |
4871 | * If this is not a mandatory field, then test it first. | |
4872 | */ | |
4873 | if (mandatory) { | |
4874 | if (read_expected(EVENT_ITEM, field) < 0) | |
4875 | return; | |
4876 | } else { | |
4877 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
4878 | goto fail; | |
4879 | if (strcmp(token, field) != 0) | |
4880 | goto discard; | |
4881 | free_token(token); | |
4882 | } | |
4883 | ||
4884 | if (read_expected(EVENT_OP, ";") < 0) | |
4885 | return; | |
4886 | if (read_expected(EVENT_ITEM, "offset") < 0) | |
4887 | return; | |
4888 | if (read_expected(EVENT_OP, ":") < 0) | |
4889 | return; | |
4890 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
4891 | goto fail; | |
4892 | *offset = atoi(token); | |
4893 | free_token(token); | |
4894 | if (read_expected(EVENT_OP, ";") < 0) | |
4895 | return; | |
4896 | if (read_expected(EVENT_ITEM, "size") < 0) | |
4897 | return; | |
4898 | if (read_expected(EVENT_OP, ":") < 0) | |
4899 | return; | |
4900 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
4901 | goto fail; | |
4902 | *size = atoi(token); | |
4903 | free_token(token); | |
4904 | if (read_expected(EVENT_OP, ";") < 0) | |
4905 | return; | |
4906 | type = read_token(&token); | |
4907 | if (type != EVENT_NEWLINE) { | |
4908 | /* newer versions of the kernel have a "signed" type */ | |
4909 | if (type != EVENT_ITEM) | |
4910 | goto fail; | |
4911 | ||
4912 | if (strcmp(token, "signed") != 0) | |
4913 | goto fail; | |
4914 | ||
4915 | free_token(token); | |
4916 | ||
4917 | if (read_expected(EVENT_OP, ":") < 0) | |
4918 | return; | |
4919 | ||
4920 | if (read_expect_type(EVENT_ITEM, &token)) | |
4921 | goto fail; | |
4922 | ||
4923 | free_token(token); | |
4924 | if (read_expected(EVENT_OP, ";") < 0) | |
4925 | return; | |
4926 | ||
4927 | if (read_expect_type(EVENT_NEWLINE, &token)) | |
4928 | goto fail; | |
4929 | } | |
4930 | fail: | |
4931 | free_token(token); | |
4932 | return; | |
4933 | ||
4934 | discard: | |
4935 | input_buf_ptr = save_input_buf_ptr; | |
4936 | input_buf_siz = save_input_buf_siz; | |
4937 | *offset = 0; | |
4938 | *size = 0; | |
4939 | free_token(token); | |
4940 | } | |
4941 | ||
4942 | /** | |
4943 | * pevent_parse_header_page - parse the data stored in the header page | |
4944 | * @pevent: the handle to the pevent | |
4945 | * @buf: the buffer storing the header page format string | |
4946 | * @size: the size of @buf | |
4947 | * @long_size: the long size to use if there is no header | |
4948 | * | |
4949 | * This parses the header page format for information on the | |
4950 | * ring buffer used. The @buf should be copied from | |
4951 | * | |
4952 | * /sys/kernel/debug/tracing/events/header_page | |
4953 | */ | |
4954 | int pevent_parse_header_page(struct pevent *pevent, char *buf, unsigned long size, | |
4955 | int long_size) | |
4956 | { | |
4957 | int ignore; | |
4958 | ||
4959 | if (!size) { | |
4960 | /* | |
4961 | * Old kernels did not have header page info. | |
4962 | * Sorry but we just use what we find here in user space. | |
4963 | */ | |
4964 | pevent->header_page_ts_size = sizeof(long long); | |
4965 | pevent->header_page_size_size = long_size; | |
4966 | pevent->header_page_data_offset = sizeof(long long) + long_size; | |
4967 | pevent->old_format = 1; | |
4968 | return -1; | |
4969 | } | |
4970 | init_input_buf(buf, size); | |
4971 | ||
4972 | parse_header_field("timestamp", &pevent->header_page_ts_offset, | |
4973 | &pevent->header_page_ts_size, 1); | |
4974 | parse_header_field("commit", &pevent->header_page_size_offset, | |
4975 | &pevent->header_page_size_size, 1); | |
4976 | parse_header_field("overwrite", &pevent->header_page_overwrite, | |
4977 | &ignore, 0); | |
4978 | parse_header_field("data", &pevent->header_page_data_offset, | |
4979 | &pevent->header_page_data_size, 1); | |
4980 | ||
4981 | return 0; | |
4982 | } | |
4983 | ||
4984 | static int event_matches(struct event_format *event, | |
4985 | int id, const char *sys_name, | |
4986 | const char *event_name) | |
4987 | { | |
4988 | if (id >= 0 && id != event->id) | |
4989 | return 0; | |
4990 | ||
4991 | if (event_name && (strcmp(event_name, event->name) != 0)) | |
4992 | return 0; | |
4993 | ||
4994 | if (sys_name && (strcmp(sys_name, event->system) != 0)) | |
4995 | return 0; | |
4996 | ||
4997 | return 1; | |
4998 | } | |
4999 | ||
5000 | static void free_handler(struct event_handler *handle) | |
5001 | { | |
5002 | free((void *)handle->sys_name); | |
5003 | free((void *)handle->event_name); | |
5004 | free(handle); | |
5005 | } | |
5006 | ||
5007 | static int find_event_handle(struct pevent *pevent, struct event_format *event) | |
5008 | { | |
5009 | struct event_handler *handle, **next; | |
5010 | ||
5011 | for (next = &pevent->handlers; *next; | |
5012 | next = &(*next)->next) { | |
5013 | handle = *next; | |
5014 | if (event_matches(event, handle->id, | |
5015 | handle->sys_name, | |
5016 | handle->event_name)) | |
5017 | break; | |
5018 | } | |
5019 | ||
5020 | if (!(*next)) | |
5021 | return 0; | |
5022 | ||
5023 | pr_stat("overriding event (%d) %s:%s with new print handler", | |
5024 | event->id, event->system, event->name); | |
5025 | ||
5026 | event->handler = handle->func; | |
5027 | event->context = handle->context; | |
5028 | ||
5029 | *next = handle->next; | |
5030 | free_handler(handle); | |
5031 | ||
5032 | return 1; | |
5033 | } | |
5034 | ||
5035 | /** | |
2b29175d | 5036 | * __pevent_parse_format - parse the event format |
f7d82350 SR |
5037 | * @buf: the buffer storing the event format string |
5038 | * @size: the size of @buf | |
5039 | * @sys: the system the event belongs to | |
5040 | * | |
5041 | * This parses the event format and creates an event structure | |
5042 | * to quickly parse raw data for a given event. | |
5043 | * | |
5044 | * These files currently come from: | |
5045 | * | |
5046 | * /sys/kernel/debug/tracing/events/.../.../format | |
5047 | */ | |
2b29175d ACM |
5048 | enum pevent_errno __pevent_parse_format(struct event_format **eventp, |
5049 | struct pevent *pevent, const char *buf, | |
5050 | unsigned long size, const char *sys) | |
f7d82350 SR |
5051 | { |
5052 | struct event_format *event; | |
5053 | int ret; | |
5054 | ||
5055 | init_input_buf(buf, size); | |
5056 | ||
2b29175d | 5057 | *eventp = event = alloc_event(); |
f7d82350 | 5058 | if (!event) |
bffddffd | 5059 | return PEVENT_ERRNO__MEM_ALLOC_FAILED; |
f7d82350 SR |
5060 | |
5061 | event->name = event_read_name(); | |
5062 | if (!event->name) { | |
5063 | /* Bad event? */ | |
bffddffd NK |
5064 | ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; |
5065 | goto event_alloc_failed; | |
f7d82350 SR |
5066 | } |
5067 | ||
5068 | if (strcmp(sys, "ftrace") == 0) { | |
f7d82350 SR |
5069 | event->flags |= EVENT_FL_ISFTRACE; |
5070 | ||
5071 | if (strcmp(event->name, "bprint") == 0) | |
5072 | event->flags |= EVENT_FL_ISBPRINT; | |
5073 | } | |
5074 | ||
5075 | event->id = event_read_id(); | |
bffddffd NK |
5076 | if (event->id < 0) { |
5077 | ret = PEVENT_ERRNO__READ_ID_FAILED; | |
5078 | /* | |
5079 | * This isn't an allocation error actually. | |
5080 | * But as the ID is critical, just bail out. | |
5081 | */ | |
5082 | goto event_alloc_failed; | |
5083 | } | |
f7d82350 SR |
5084 | |
5085 | event->system = strdup(sys); | |
bffddffd NK |
5086 | if (!event->system) { |
5087 | ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
5088 | goto event_alloc_failed; | |
5089 | } | |
f7d82350 | 5090 | |
101782ea SR |
5091 | /* Add pevent to event so that it can be referenced */ |
5092 | event->pevent = pevent; | |
5093 | ||
f7d82350 SR |
5094 | ret = event_read_format(event); |
5095 | if (ret < 0) { | |
bffddffd NK |
5096 | ret = PEVENT_ERRNO__READ_FORMAT_FAILED; |
5097 | goto event_parse_failed; | |
f7d82350 SR |
5098 | } |
5099 | ||
5100 | /* | |
5101 | * If the event has an override, don't print warnings if the event | |
5102 | * print format fails to parse. | |
5103 | */ | |
2b29175d | 5104 | if (pevent && find_event_handle(pevent, event)) |
f7d82350 SR |
5105 | show_warning = 0; |
5106 | ||
5107 | ret = event_read_print(event); | |
2b29175d ACM |
5108 | show_warning = 1; |
5109 | ||
f7d82350 | 5110 | if (ret < 0) { |
bffddffd NK |
5111 | ret = PEVENT_ERRNO__READ_PRINT_FAILED; |
5112 | goto event_parse_failed; | |
f7d82350 | 5113 | } |
f7d82350 SR |
5114 | |
5115 | if (!ret && (event->flags & EVENT_FL_ISFTRACE)) { | |
5116 | struct format_field *field; | |
5117 | struct print_arg *arg, **list; | |
5118 | ||
5119 | /* old ftrace had no args */ | |
f7d82350 SR |
5120 | list = &event->print_fmt.args; |
5121 | for (field = event->format.fields; field; field = field->next) { | |
5122 | arg = alloc_arg(); | |
b1ac754b NK |
5123 | if (!arg) { |
5124 | event->flags |= EVENT_FL_FAILED; | |
5125 | return PEVENT_ERRNO__OLD_FTRACE_ARG_FAILED; | |
5126 | } | |
f7d82350 SR |
5127 | arg->type = PRINT_FIELD; |
5128 | arg->field.name = strdup(field->name); | |
ca63858e | 5129 | if (!arg->field.name) { |
4b5632bc | 5130 | event->flags |= EVENT_FL_FAILED; |
fd34f0b2 | 5131 | free_arg(arg); |
bffddffd | 5132 | return PEVENT_ERRNO__OLD_FTRACE_ARG_FAILED; |
ca63858e | 5133 | } |
f7d82350 | 5134 | arg->field.field = field; |
fd34f0b2 NK |
5135 | *list = arg; |
5136 | list = &arg->next; | |
f7d82350 SR |
5137 | } |
5138 | return 0; | |
5139 | } | |
5140 | ||
f7d82350 SR |
5141 | return 0; |
5142 | ||
bffddffd | 5143 | event_parse_failed: |
f7d82350 | 5144 | event->flags |= EVENT_FL_FAILED; |
bffddffd NK |
5145 | return ret; |
5146 | ||
5147 | event_alloc_failed: | |
2b29175d ACM |
5148 | free(event->system); |
5149 | free(event->name); | |
5150 | free(event); | |
5151 | *eventp = NULL; | |
5152 | return ret; | |
5153 | } | |
5154 | ||
71ad9583 JO |
5155 | static enum pevent_errno |
5156 | __pevent_parse_event(struct pevent *pevent, | |
5157 | struct event_format **eventp, | |
5158 | const char *buf, unsigned long size, | |
5159 | const char *sys) | |
5160 | { | |
5161 | int ret = __pevent_parse_format(eventp, pevent, buf, size, sys); | |
5162 | struct event_format *event = *eventp; | |
5163 | ||
5164 | if (event == NULL) | |
5165 | return ret; | |
5166 | ||
5167 | if (pevent && add_event(pevent, event)) { | |
5168 | ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
5169 | goto event_add_failed; | |
5170 | } | |
5171 | ||
5172 | #define PRINT_ARGS 0 | |
5173 | if (PRINT_ARGS && event->print_fmt.args) | |
5174 | print_args(event->print_fmt.args); | |
5175 | ||
5176 | return 0; | |
5177 | ||
5178 | event_add_failed: | |
5179 | pevent_free_format(event); | |
5180 | return ret; | |
5181 | } | |
5182 | ||
2b29175d ACM |
5183 | /** |
5184 | * pevent_parse_format - parse the event format | |
71ad9583 JO |
5185 | * @pevent: the handle to the pevent |
5186 | * @eventp: returned format | |
2b29175d ACM |
5187 | * @buf: the buffer storing the event format string |
5188 | * @size: the size of @buf | |
5189 | * @sys: the system the event belongs to | |
5190 | * | |
5191 | * This parses the event format and creates an event structure | |
5192 | * to quickly parse raw data for a given event. | |
5193 | * | |
5194 | * These files currently come from: | |
5195 | * | |
5196 | * /sys/kernel/debug/tracing/events/.../.../format | |
5197 | */ | |
71ad9583 JO |
5198 | enum pevent_errno pevent_parse_format(struct pevent *pevent, |
5199 | struct event_format **eventp, | |
5200 | const char *buf, | |
2b29175d ACM |
5201 | unsigned long size, const char *sys) |
5202 | { | |
71ad9583 | 5203 | return __pevent_parse_event(pevent, eventp, buf, size, sys); |
2b29175d ACM |
5204 | } |
5205 | ||
5206 | /** | |
5207 | * pevent_parse_event - parse the event format | |
5208 | * @pevent: the handle to the pevent | |
5209 | * @buf: the buffer storing the event format string | |
5210 | * @size: the size of @buf | |
5211 | * @sys: the system the event belongs to | |
5212 | * | |
5213 | * This parses the event format and creates an event structure | |
5214 | * to quickly parse raw data for a given event. | |
5215 | * | |
5216 | * These files currently come from: | |
5217 | * | |
5218 | * /sys/kernel/debug/tracing/events/.../.../format | |
5219 | */ | |
5220 | enum pevent_errno pevent_parse_event(struct pevent *pevent, const char *buf, | |
5221 | unsigned long size, const char *sys) | |
5222 | { | |
5223 | struct event_format *event = NULL; | |
71ad9583 | 5224 | return __pevent_parse_event(pevent, &event, buf, size, sys); |
f7d82350 SR |
5225 | } |
5226 | ||
2f197b9d NK |
5227 | #undef _PE |
5228 | #define _PE(code, str) str | |
5229 | static const char * const pevent_error_str[] = { | |
5230 | PEVENT_ERRORS | |
5231 | }; | |
5232 | #undef _PE | |
5233 | ||
ca383a4d ACM |
5234 | int pevent_strerror(struct pevent *pevent __maybe_unused, |
5235 | enum pevent_errno errnum, char *buf, size_t buflen) | |
2f197b9d NK |
5236 | { |
5237 | int idx; | |
5238 | const char *msg; | |
5239 | ||
5240 | if (errnum >= 0) { | |
e1aa7c30 NK |
5241 | msg = strerror_r(errnum, buf, buflen); |
5242 | if (msg != buf) { | |
5243 | size_t len = strlen(msg); | |
9612ef67 IT |
5244 | memcpy(buf, msg, min(buflen - 1, len)); |
5245 | *(buf + min(buflen - 1, len)) = '\0'; | |
e1aa7c30 | 5246 | } |
2f197b9d NK |
5247 | return 0; |
5248 | } | |
5249 | ||
5250 | if (errnum <= __PEVENT_ERRNO__START || | |
5251 | errnum >= __PEVENT_ERRNO__END) | |
5252 | return -1; | |
5253 | ||
f63fe79f | 5254 | idx = errnum - __PEVENT_ERRNO__START - 1; |
2f197b9d | 5255 | msg = pevent_error_str[idx]; |
bf19b82e | 5256 | snprintf(buf, buflen, "%s", msg); |
2f197b9d NK |
5257 | |
5258 | return 0; | |
5259 | } | |
5260 | ||
f7d82350 | 5261 | int get_field_val(struct trace_seq *s, struct format_field *field, |
1c698186 | 5262 | const char *name, struct pevent_record *record, |
f7d82350 SR |
5263 | unsigned long long *val, int err) |
5264 | { | |
5265 | if (!field) { | |
5266 | if (err) | |
5267 | trace_seq_printf(s, "<CANT FIND FIELD %s>", name); | |
5268 | return -1; | |
5269 | } | |
5270 | ||
5271 | if (pevent_read_number_field(field, record->data, val)) { | |
5272 | if (err) | |
5273 | trace_seq_printf(s, " %s=INVALID", name); | |
5274 | return -1; | |
5275 | } | |
5276 | ||
5277 | return 0; | |
5278 | } | |
5279 | ||
5280 | /** | |
5281 | * pevent_get_field_raw - return the raw pointer into the data field | |
5282 | * @s: The seq to print to on error | |
5283 | * @event: the event that the field is for | |
5284 | * @name: The name of the field | |
5285 | * @record: The record with the field name. | |
5286 | * @len: place to store the field length. | |
5287 | * @err: print default error if failed. | |
5288 | * | |
5289 | * Returns a pointer into record->data of the field and places | |
5290 | * the length of the field in @len. | |
5291 | * | |
5292 | * On failure, it returns NULL. | |
5293 | */ | |
5294 | void *pevent_get_field_raw(struct trace_seq *s, struct event_format *event, | |
1c698186 | 5295 | const char *name, struct pevent_record *record, |
f7d82350 SR |
5296 | int *len, int err) |
5297 | { | |
5298 | struct format_field *field; | |
5299 | void *data = record->data; | |
5300 | unsigned offset; | |
5301 | int dummy; | |
5302 | ||
5303 | if (!event) | |
5304 | return NULL; | |
5305 | ||
5306 | field = pevent_find_field(event, name); | |
5307 | ||
5308 | if (!field) { | |
5309 | if (err) | |
5310 | trace_seq_printf(s, "<CANT FIND FIELD %s>", name); | |
5311 | return NULL; | |
5312 | } | |
5313 | ||
5314 | /* Allow @len to be NULL */ | |
5315 | if (!len) | |
5316 | len = &dummy; | |
5317 | ||
5318 | offset = field->offset; | |
5319 | if (field->flags & FIELD_IS_DYNAMIC) { | |
5320 | offset = pevent_read_number(event->pevent, | |
5321 | data + offset, field->size); | |
5322 | *len = offset >> 16; | |
5323 | offset &= 0xffff; | |
5324 | } else | |
5325 | *len = field->size; | |
5326 | ||
5327 | return data + offset; | |
5328 | } | |
5329 | ||
5330 | /** | |
5331 | * pevent_get_field_val - find a field and return its value | |
5332 | * @s: The seq to print to on error | |
5333 | * @event: the event that the field is for | |
5334 | * @name: The name of the field | |
5335 | * @record: The record with the field name. | |
5336 | * @val: place to store the value of the field. | |
5337 | * @err: print default error if failed. | |
5338 | * | |
5339 | * Returns 0 on success -1 on field not found. | |
5340 | */ | |
5341 | int pevent_get_field_val(struct trace_seq *s, struct event_format *event, | |
1c698186 | 5342 | const char *name, struct pevent_record *record, |
f7d82350 SR |
5343 | unsigned long long *val, int err) |
5344 | { | |
5345 | struct format_field *field; | |
5346 | ||
5347 | if (!event) | |
5348 | return -1; | |
5349 | ||
5350 | field = pevent_find_field(event, name); | |
5351 | ||
5352 | return get_field_val(s, field, name, record, val, err); | |
5353 | } | |
5354 | ||
5355 | /** | |
5356 | * pevent_get_common_field_val - find a common field and return its value | |
5357 | * @s: The seq to print to on error | |
5358 | * @event: the event that the field is for | |
5359 | * @name: The name of the field | |
5360 | * @record: The record with the field name. | |
5361 | * @val: place to store the value of the field. | |
5362 | * @err: print default error if failed. | |
5363 | * | |
5364 | * Returns 0 on success -1 on field not found. | |
5365 | */ | |
5366 | int pevent_get_common_field_val(struct trace_seq *s, struct event_format *event, | |
1c698186 | 5367 | const char *name, struct pevent_record *record, |
f7d82350 SR |
5368 | unsigned long long *val, int err) |
5369 | { | |
5370 | struct format_field *field; | |
5371 | ||
5372 | if (!event) | |
5373 | return -1; | |
5374 | ||
5375 | field = pevent_find_common_field(event, name); | |
5376 | ||
5377 | return get_field_val(s, field, name, record, val, err); | |
5378 | } | |
5379 | ||
5380 | /** | |
5381 | * pevent_get_any_field_val - find a any field and return its value | |
5382 | * @s: The seq to print to on error | |
5383 | * @event: the event that the field is for | |
5384 | * @name: The name of the field | |
5385 | * @record: The record with the field name. | |
5386 | * @val: place to store the value of the field. | |
5387 | * @err: print default error if failed. | |
5388 | * | |
5389 | * Returns 0 on success -1 on field not found. | |
5390 | */ | |
5391 | int pevent_get_any_field_val(struct trace_seq *s, struct event_format *event, | |
1c698186 | 5392 | const char *name, struct pevent_record *record, |
f7d82350 SR |
5393 | unsigned long long *val, int err) |
5394 | { | |
5395 | struct format_field *field; | |
5396 | ||
5397 | if (!event) | |
5398 | return -1; | |
5399 | ||
5400 | field = pevent_find_any_field(event, name); | |
5401 | ||
5402 | return get_field_val(s, field, name, record, val, err); | |
5403 | } | |
5404 | ||
5405 | /** | |
5406 | * pevent_print_num_field - print a field and a format | |
5407 | * @s: The seq to print to | |
5408 | * @fmt: The printf format to print the field with. | |
5409 | * @event: the event that the field is for | |
5410 | * @name: The name of the field | |
5411 | * @record: The record with the field name. | |
5412 | * @err: print default error if failed. | |
5413 | * | |
16e6b8fd | 5414 | * Returns: 0 on success, -1 field not found, or 1 if buffer is full. |
f7d82350 SR |
5415 | */ |
5416 | int pevent_print_num_field(struct trace_seq *s, const char *fmt, | |
5417 | struct event_format *event, const char *name, | |
1c698186 | 5418 | struct pevent_record *record, int err) |
f7d82350 SR |
5419 | { |
5420 | struct format_field *field = pevent_find_field(event, name); | |
5421 | unsigned long long val; | |
5422 | ||
5423 | if (!field) | |
5424 | goto failed; | |
5425 | ||
5426 | if (pevent_read_number_field(field, record->data, &val)) | |
5427 | goto failed; | |
5428 | ||
5429 | return trace_seq_printf(s, fmt, val); | |
5430 | ||
5431 | failed: | |
5432 | if (err) | |
5433 | trace_seq_printf(s, "CAN'T FIND FIELD \"%s\"", name); | |
5434 | return -1; | |
5435 | } | |
5436 | ||
6d862b8c SR |
5437 | /** |
5438 | * pevent_print_func_field - print a field and a format for function pointers | |
5439 | * @s: The seq to print to | |
5440 | * @fmt: The printf format to print the field with. | |
5441 | * @event: the event that the field is for | |
5442 | * @name: The name of the field | |
5443 | * @record: The record with the field name. | |
5444 | * @err: print default error if failed. | |
5445 | * | |
5446 | * Returns: 0 on success, -1 field not found, or 1 if buffer is full. | |
5447 | */ | |
5448 | int pevent_print_func_field(struct trace_seq *s, const char *fmt, | |
5449 | struct event_format *event, const char *name, | |
5450 | struct pevent_record *record, int err) | |
5451 | { | |
5452 | struct format_field *field = pevent_find_field(event, name); | |
5453 | struct pevent *pevent = event->pevent; | |
5454 | unsigned long long val; | |
5455 | struct func_map *func; | |
5456 | char tmp[128]; | |
5457 | ||
5458 | if (!field) | |
5459 | goto failed; | |
5460 | ||
5461 | if (pevent_read_number_field(field, record->data, &val)) | |
5462 | goto failed; | |
5463 | ||
5464 | func = find_func(pevent, val); | |
5465 | ||
5466 | if (func) | |
5467 | snprintf(tmp, 128, "%s/0x%llx", func->func, func->addr - val); | |
5468 | else | |
5469 | sprintf(tmp, "0x%08llx", val); | |
5470 | ||
5471 | return trace_seq_printf(s, fmt, tmp); | |
5472 | ||
5473 | failed: | |
5474 | if (err) | |
5475 | trace_seq_printf(s, "CAN'T FIND FIELD \"%s\"", name); | |
5476 | return -1; | |
5477 | } | |
5478 | ||
f7d82350 SR |
5479 | static void free_func_handle(struct pevent_function_handler *func) |
5480 | { | |
5481 | struct pevent_func_params *params; | |
5482 | ||
5483 | free(func->name); | |
5484 | ||
5485 | while (func->params) { | |
5486 | params = func->params; | |
5487 | func->params = params->next; | |
5488 | free(params); | |
5489 | } | |
5490 | ||
5491 | free(func); | |
5492 | } | |
5493 | ||
5494 | /** | |
5495 | * pevent_register_print_function - register a helper function | |
5496 | * @pevent: the handle to the pevent | |
5497 | * @func: the function to process the helper function | |
16e6b8fd | 5498 | * @ret_type: the return type of the helper function |
f7d82350 SR |
5499 | * @name: the name of the helper function |
5500 | * @parameters: A list of enum pevent_func_arg_type | |
5501 | * | |
5502 | * Some events may have helper functions in the print format arguments. | |
16e6b8fd | 5503 | * This allows a plugin to dynamically create a way to process one |
f7d82350 SR |
5504 | * of these functions. |
5505 | * | |
5506 | * The @parameters is a variable list of pevent_func_arg_type enums that | |
5507 | * must end with PEVENT_FUNC_ARG_VOID. | |
5508 | */ | |
5509 | int pevent_register_print_function(struct pevent *pevent, | |
5510 | pevent_func_handler func, | |
5511 | enum pevent_func_arg_type ret_type, | |
5512 | char *name, ...) | |
5513 | { | |
5514 | struct pevent_function_handler *func_handle; | |
5515 | struct pevent_func_params **next_param; | |
5516 | struct pevent_func_params *param; | |
5517 | enum pevent_func_arg_type type; | |
5518 | va_list ap; | |
67ed939c | 5519 | int ret; |
f7d82350 SR |
5520 | |
5521 | func_handle = find_func_handler(pevent, name); | |
5522 | if (func_handle) { | |
5523 | /* | |
5524 | * This is most like caused by the users own | |
5525 | * plugins updating the function. This overrides the | |
5526 | * system defaults. | |
5527 | */ | |
5528 | pr_stat("override of function helper '%s'", name); | |
5529 | remove_func_handler(pevent, name); | |
5530 | } | |
5531 | ||
87162d81 | 5532 | func_handle = calloc(1, sizeof(*func_handle)); |
67ed939c NK |
5533 | if (!func_handle) { |
5534 | do_warning("Failed to allocate function handler"); | |
5535 | return PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
5536 | } | |
f7d82350 SR |
5537 | |
5538 | func_handle->ret_type = ret_type; | |
5539 | func_handle->name = strdup(name); | |
5540 | func_handle->func = func; | |
67ed939c NK |
5541 | if (!func_handle->name) { |
5542 | do_warning("Failed to allocate function name"); | |
5543 | free(func_handle); | |
5544 | return PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
5545 | } | |
f7d82350 SR |
5546 | |
5547 | next_param = &(func_handle->params); | |
5548 | va_start(ap, name); | |
5549 | for (;;) { | |
5550 | type = va_arg(ap, enum pevent_func_arg_type); | |
5551 | if (type == PEVENT_FUNC_ARG_VOID) | |
5552 | break; | |
5553 | ||
e46466b8 | 5554 | if (type >= PEVENT_FUNC_ARG_MAX_TYPES) { |
67ed939c NK |
5555 | do_warning("Invalid argument type %d", type); |
5556 | ret = PEVENT_ERRNO__INVALID_ARG_TYPE; | |
f7d82350 SR |
5557 | goto out_free; |
5558 | } | |
5559 | ||
67ed939c NK |
5560 | param = malloc(sizeof(*param)); |
5561 | if (!param) { | |
5562 | do_warning("Failed to allocate function param"); | |
5563 | ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
5564 | goto out_free; | |
5565 | } | |
f7d82350 SR |
5566 | param->type = type; |
5567 | param->next = NULL; | |
5568 | ||
5569 | *next_param = param; | |
5570 | next_param = &(param->next); | |
5571 | ||
5572 | func_handle->nr_args++; | |
5573 | } | |
5574 | va_end(ap); | |
5575 | ||
5576 | func_handle->next = pevent->func_handlers; | |
5577 | pevent->func_handlers = func_handle; | |
5578 | ||
5579 | return 0; | |
5580 | out_free: | |
5581 | va_end(ap); | |
5582 | free_func_handle(func_handle); | |
67ed939c | 5583 | return ret; |
f7d82350 SR |
5584 | } |
5585 | ||
20c7e5ab NK |
5586 | /** |
5587 | * pevent_unregister_print_function - unregister a helper function | |
5588 | * @pevent: the handle to the pevent | |
5589 | * @func: the function to process the helper function | |
5590 | * @name: the name of the helper function | |
5591 | * | |
5592 | * This function removes existing print handler for function @name. | |
5593 | * | |
5594 | * Returns 0 if the handler was removed successully, -1 otherwise. | |
5595 | */ | |
5596 | int pevent_unregister_print_function(struct pevent *pevent, | |
5597 | pevent_func_handler func, char *name) | |
5598 | { | |
5599 | struct pevent_function_handler *func_handle; | |
5600 | ||
5601 | func_handle = find_func_handler(pevent, name); | |
5602 | if (func_handle && func_handle->func == func) { | |
5603 | remove_func_handler(pevent, name); | |
5604 | return 0; | |
5605 | } | |
5606 | return -1; | |
5607 | } | |
5608 | ||
ad13701d NK |
5609 | static struct event_format *pevent_search_event(struct pevent *pevent, int id, |
5610 | const char *sys_name, | |
5611 | const char *event_name) | |
5612 | { | |
5613 | struct event_format *event; | |
5614 | ||
5615 | if (id >= 0) { | |
5616 | /* search by id */ | |
5617 | event = pevent_find_event(pevent, id); | |
5618 | if (!event) | |
5619 | return NULL; | |
5620 | if (event_name && (strcmp(event_name, event->name) != 0)) | |
5621 | return NULL; | |
5622 | if (sys_name && (strcmp(sys_name, event->system) != 0)) | |
5623 | return NULL; | |
5624 | } else { | |
5625 | event = pevent_find_event_by_name(pevent, sys_name, event_name); | |
5626 | if (!event) | |
5627 | return NULL; | |
5628 | } | |
5629 | return event; | |
5630 | } | |
5631 | ||
f7d82350 | 5632 | /** |
16e6b8fd | 5633 | * pevent_register_event_handler - register a way to parse an event |
f7d82350 SR |
5634 | * @pevent: the handle to the pevent |
5635 | * @id: the id of the event to register | |
5636 | * @sys_name: the system name the event belongs to | |
5637 | * @event_name: the name of the event | |
5638 | * @func: the function to call to parse the event information | |
16e6b8fd | 5639 | * @context: the data to be passed to @func |
f7d82350 SR |
5640 | * |
5641 | * This function allows a developer to override the parsing of | |
5642 | * a given event. If for some reason the default print format | |
5643 | * is not sufficient, this function will register a function | |
5644 | * for an event to be used to parse the data instead. | |
5645 | * | |
5646 | * If @id is >= 0, then it is used to find the event. | |
5647 | * else @sys_name and @event_name are used. | |
5648 | */ | |
79d5adf0 NK |
5649 | int pevent_register_event_handler(struct pevent *pevent, int id, |
5650 | const char *sys_name, const char *event_name, | |
5651 | pevent_event_handler_func func, void *context) | |
f7d82350 SR |
5652 | { |
5653 | struct event_format *event; | |
5654 | struct event_handler *handle; | |
5655 | ||
ad13701d NK |
5656 | event = pevent_search_event(pevent, id, sys_name, event_name); |
5657 | if (event == NULL) | |
5658 | goto not_found; | |
f7d82350 SR |
5659 | |
5660 | pr_stat("overriding event (%d) %s:%s with new print handler", | |
5661 | event->id, event->system, event->name); | |
5662 | ||
5663 | event->handler = func; | |
5664 | event->context = context; | |
5665 | return 0; | |
5666 | ||
5667 | not_found: | |
5668 | /* Save for later use. */ | |
87162d81 | 5669 | handle = calloc(1, sizeof(*handle)); |
0ca8da00 NK |
5670 | if (!handle) { |
5671 | do_warning("Failed to allocate event handler"); | |
5672 | return PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
5673 | } | |
5674 | ||
f7d82350 SR |
5675 | handle->id = id; |
5676 | if (event_name) | |
5677 | handle->event_name = strdup(event_name); | |
5678 | if (sys_name) | |
5679 | handle->sys_name = strdup(sys_name); | |
5680 | ||
ca63858e NK |
5681 | if ((event_name && !handle->event_name) || |
5682 | (sys_name && !handle->sys_name)) { | |
0ca8da00 NK |
5683 | do_warning("Failed to allocate event/sys name"); |
5684 | free((void *)handle->event_name); | |
5685 | free((void *)handle->sys_name); | |
5686 | free(handle); | |
5687 | return PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
ca63858e NK |
5688 | } |
5689 | ||
f7d82350 SR |
5690 | handle->func = func; |
5691 | handle->next = pevent->handlers; | |
5692 | pevent->handlers = handle; | |
5693 | handle->context = context; | |
5694 | ||
5695 | return -1; | |
5696 | } | |
5697 | ||
ad13701d NK |
5698 | static int handle_matches(struct event_handler *handler, int id, |
5699 | const char *sys_name, const char *event_name, | |
5700 | pevent_event_handler_func func, void *context) | |
5701 | { | |
5702 | if (id >= 0 && id != handler->id) | |
5703 | return 0; | |
5704 | ||
5705 | if (event_name && (strcmp(event_name, handler->event_name) != 0)) | |
5706 | return 0; | |
5707 | ||
5708 | if (sys_name && (strcmp(sys_name, handler->sys_name) != 0)) | |
5709 | return 0; | |
5710 | ||
5711 | if (func != handler->func || context != handler->context) | |
5712 | return 0; | |
5713 | ||
5714 | return 1; | |
5715 | } | |
5716 | ||
5717 | /** | |
5718 | * pevent_unregister_event_handler - unregister an existing event handler | |
5719 | * @pevent: the handle to the pevent | |
5720 | * @id: the id of the event to unregister | |
5721 | * @sys_name: the system name the handler belongs to | |
5722 | * @event_name: the name of the event handler | |
5723 | * @func: the function to call to parse the event information | |
5724 | * @context: the data to be passed to @func | |
5725 | * | |
5726 | * This function removes existing event handler (parser). | |
5727 | * | |
5728 | * If @id is >= 0, then it is used to find the event. | |
5729 | * else @sys_name and @event_name are used. | |
5730 | * | |
5731 | * Returns 0 if handler was removed successfully, -1 if event was not found. | |
5732 | */ | |
5733 | int pevent_unregister_event_handler(struct pevent *pevent, int id, | |
5734 | const char *sys_name, const char *event_name, | |
5735 | pevent_event_handler_func func, void *context) | |
5736 | { | |
5737 | struct event_format *event; | |
5738 | struct event_handler *handle; | |
5739 | struct event_handler **next; | |
5740 | ||
5741 | event = pevent_search_event(pevent, id, sys_name, event_name); | |
5742 | if (event == NULL) | |
5743 | goto not_found; | |
5744 | ||
5745 | if (event->handler == func && event->context == context) { | |
5746 | pr_stat("removing override handler for event (%d) %s:%s. Going back to default handler.", | |
5747 | event->id, event->system, event->name); | |
5748 | ||
5749 | event->handler = NULL; | |
5750 | event->context = NULL; | |
5751 | return 0; | |
5752 | } | |
5753 | ||
5754 | not_found: | |
5755 | for (next = &pevent->handlers; *next; next = &(*next)->next) { | |
5756 | handle = *next; | |
5757 | if (handle_matches(handle, id, sys_name, event_name, | |
5758 | func, context)) | |
5759 | break; | |
5760 | } | |
5761 | ||
5762 | if (!(*next)) | |
5763 | return -1; | |
5764 | ||
5765 | *next = handle->next; | |
5766 | free_handler(handle); | |
5767 | ||
5768 | return 0; | |
5769 | } | |
5770 | ||
f7d82350 SR |
5771 | /** |
5772 | * pevent_alloc - create a pevent handle | |
5773 | */ | |
5774 | struct pevent *pevent_alloc(void) | |
5775 | { | |
87162d81 | 5776 | struct pevent *pevent = calloc(1, sizeof(*pevent)); |
f7d82350 | 5777 | |
87162d81 ACM |
5778 | if (pevent) |
5779 | pevent->ref_count = 1; | |
f7d82350 SR |
5780 | |
5781 | return pevent; | |
5782 | } | |
5783 | ||
5784 | void pevent_ref(struct pevent *pevent) | |
5785 | { | |
5786 | pevent->ref_count++; | |
5787 | } | |
5788 | ||
5789 | static void free_format_fields(struct format_field *field) | |
5790 | { | |
5791 | struct format_field *next; | |
5792 | ||
5793 | while (field) { | |
5794 | next = field->next; | |
5795 | free(field->type); | |
5796 | free(field->name); | |
5797 | free(field); | |
5798 | field = next; | |
5799 | } | |
5800 | } | |
5801 | ||
5802 | static void free_formats(struct format *format) | |
5803 | { | |
5804 | free_format_fields(format->common_fields); | |
5805 | free_format_fields(format->fields); | |
5806 | } | |
5807 | ||
2b29175d | 5808 | void pevent_free_format(struct event_format *event) |
f7d82350 SR |
5809 | { |
5810 | free(event->name); | |
5811 | free(event->system); | |
5812 | ||
5813 | free_formats(&event->format); | |
5814 | ||
5815 | free(event->print_fmt.format); | |
5816 | free_args(event->print_fmt.args); | |
5817 | ||
5818 | free(event); | |
5819 | } | |
5820 | ||
5821 | /** | |
5822 | * pevent_free - free a pevent handle | |
5823 | * @pevent: the pevent handle to free | |
5824 | */ | |
5825 | void pevent_free(struct pevent *pevent) | |
5826 | { | |
a2525a08 SR |
5827 | struct cmdline_list *cmdlist, *cmdnext; |
5828 | struct func_list *funclist, *funcnext; | |
5829 | struct printk_list *printklist, *printknext; | |
f7d82350 SR |
5830 | struct pevent_function_handler *func_handler; |
5831 | struct event_handler *handle; | |
5832 | int i; | |
5833 | ||
a2525a08 SR |
5834 | if (!pevent) |
5835 | return; | |
5836 | ||
5837 | cmdlist = pevent->cmdlist; | |
5838 | funclist = pevent->funclist; | |
5839 | printklist = pevent->printklist; | |
5840 | ||
f7d82350 SR |
5841 | pevent->ref_count--; |
5842 | if (pevent->ref_count) | |
5843 | return; | |
5844 | ||
5845 | if (pevent->cmdlines) { | |
5846 | for (i = 0; i < pevent->cmdline_count; i++) | |
5847 | free(pevent->cmdlines[i].comm); | |
5848 | free(pevent->cmdlines); | |
5849 | } | |
5850 | ||
5851 | while (cmdlist) { | |
5852 | cmdnext = cmdlist->next; | |
5853 | free(cmdlist->comm); | |
5854 | free(cmdlist); | |
5855 | cmdlist = cmdnext; | |
5856 | } | |
5857 | ||
5858 | if (pevent->func_map) { | |
8a38cce4 | 5859 | for (i = 0; i < (int)pevent->func_count; i++) { |
f7d82350 SR |
5860 | free(pevent->func_map[i].func); |
5861 | free(pevent->func_map[i].mod); | |
5862 | } | |
5863 | free(pevent->func_map); | |
5864 | } | |
5865 | ||
5866 | while (funclist) { | |
5867 | funcnext = funclist->next; | |
5868 | free(funclist->func); | |
5869 | free(funclist->mod); | |
5870 | free(funclist); | |
5871 | funclist = funcnext; | |
5872 | } | |
5873 | ||
5874 | while (pevent->func_handlers) { | |
5875 | func_handler = pevent->func_handlers; | |
5876 | pevent->func_handlers = func_handler->next; | |
5877 | free_func_handle(func_handler); | |
5878 | } | |
5879 | ||
5880 | if (pevent->printk_map) { | |
8a38cce4 | 5881 | for (i = 0; i < (int)pevent->printk_count; i++) |
f7d82350 SR |
5882 | free(pevent->printk_map[i].printk); |
5883 | free(pevent->printk_map); | |
5884 | } | |
5885 | ||
5886 | while (printklist) { | |
5887 | printknext = printklist->next; | |
5888 | free(printklist->printk); | |
5889 | free(printklist); | |
5890 | printklist = printknext; | |
5891 | } | |
5892 | ||
5893 | for (i = 0; i < pevent->nr_events; i++) | |
2b29175d | 5894 | pevent_free_format(pevent->events[i]); |
f7d82350 SR |
5895 | |
5896 | while (pevent->handlers) { | |
5897 | handle = pevent->handlers; | |
5898 | pevent->handlers = handle->next; | |
5899 | free_handler(handle); | |
5900 | } | |
5901 | ||
5902 | free(pevent->events); | |
5903 | free(pevent->sort_events); | |
5904 | ||
5905 | free(pevent); | |
5906 | } | |
5907 | ||
5908 | void pevent_unref(struct pevent *pevent) | |
5909 | { | |
5910 | pevent_free(pevent); | |
5911 | } |