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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 | 34 | |
3d199b5b | 35 | #include <netinet/ip6.h> |
f7d82350 | 36 | #include "event-parse.h" |
668fe01f | 37 | #include "event-utils.h" |
f7d82350 SR |
38 | |
39 | static const char *input_buf; | |
40 | static unsigned long long input_buf_ptr; | |
41 | static unsigned long long input_buf_siz; | |
42 | ||
5205aec9 TZ |
43 | static int is_flag_field; |
44 | static int is_symbolic_field; | |
45 | ||
f7d82350 SR |
46 | static int show_warning = 1; |
47 | ||
48 | #define do_warning(fmt, ...) \ | |
49 | do { \ | |
50 | if (show_warning) \ | |
51 | warning(fmt, ##__VA_ARGS__); \ | |
52 | } while (0) | |
53 | ||
3388cc3e NK |
54 | #define do_warning_event(event, fmt, ...) \ |
55 | do { \ | |
56 | if (!show_warning) \ | |
57 | continue; \ | |
58 | \ | |
59 | if (event) \ | |
60 | warning("[%s:%s] " fmt, event->system, \ | |
61 | event->name, ##__VA_ARGS__); \ | |
62 | else \ | |
63 | warning(fmt, ##__VA_ARGS__); \ | |
64 | } while (0) | |
65 | ||
f7d82350 SR |
66 | static void init_input_buf(const char *buf, unsigned long long size) |
67 | { | |
68 | input_buf = buf; | |
69 | input_buf_siz = size; | |
70 | input_buf_ptr = 0; | |
71 | } | |
72 | ||
73 | const char *pevent_get_input_buf(void) | |
74 | { | |
75 | return input_buf; | |
76 | } | |
77 | ||
78 | unsigned long long pevent_get_input_buf_ptr(void) | |
79 | { | |
80 | return input_buf_ptr; | |
81 | } | |
82 | ||
83 | struct event_handler { | |
84 | struct event_handler *next; | |
85 | int id; | |
86 | const char *sys_name; | |
87 | const char *event_name; | |
88 | pevent_event_handler_func func; | |
89 | void *context; | |
90 | }; | |
91 | ||
92 | struct pevent_func_params { | |
93 | struct pevent_func_params *next; | |
94 | enum pevent_func_arg_type type; | |
95 | }; | |
96 | ||
97 | struct pevent_function_handler { | |
98 | struct pevent_function_handler *next; | |
99 | enum pevent_func_arg_type ret_type; | |
100 | char *name; | |
101 | pevent_func_handler func; | |
102 | struct pevent_func_params *params; | |
103 | int nr_args; | |
104 | }; | |
105 | ||
106 | static unsigned long long | |
107 | process_defined_func(struct trace_seq *s, void *data, int size, | |
108 | struct event_format *event, struct print_arg *arg); | |
109 | ||
110 | static void free_func_handle(struct pevent_function_handler *func); | |
111 | ||
112 | /** | |
113 | * pevent_buffer_init - init buffer for parsing | |
114 | * @buf: buffer to parse | |
115 | * @size: the size of the buffer | |
116 | * | |
117 | * For use with pevent_read_token(), this initializes the internal | |
118 | * buffer that pevent_read_token() will parse. | |
119 | */ | |
120 | void pevent_buffer_init(const char *buf, unsigned long long size) | |
121 | { | |
122 | init_input_buf(buf, size); | |
123 | } | |
124 | ||
125 | void breakpoint(void) | |
126 | { | |
127 | static int x; | |
128 | x++; | |
129 | } | |
130 | ||
131 | struct print_arg *alloc_arg(void) | |
132 | { | |
87162d81 | 133 | return calloc(1, sizeof(struct print_arg)); |
f7d82350 SR |
134 | } |
135 | ||
136 | struct cmdline { | |
137 | char *comm; | |
138 | int pid; | |
139 | }; | |
140 | ||
141 | static int cmdline_cmp(const void *a, const void *b) | |
142 | { | |
143 | const struct cmdline *ca = a; | |
144 | const struct cmdline *cb = b; | |
145 | ||
146 | if (ca->pid < cb->pid) | |
147 | return -1; | |
148 | if (ca->pid > cb->pid) | |
149 | return 1; | |
150 | ||
151 | return 0; | |
152 | } | |
153 | ||
154 | struct cmdline_list { | |
155 | struct cmdline_list *next; | |
156 | char *comm; | |
157 | int pid; | |
158 | }; | |
159 | ||
160 | static int cmdline_init(struct pevent *pevent) | |
161 | { | |
162 | struct cmdline_list *cmdlist = pevent->cmdlist; | |
163 | struct cmdline_list *item; | |
164 | struct cmdline *cmdlines; | |
165 | int i; | |
166 | ||
a6d2a61a ACM |
167 | cmdlines = malloc(sizeof(*cmdlines) * pevent->cmdline_count); |
168 | if (!cmdlines) | |
169 | return -1; | |
f7d82350 SR |
170 | |
171 | i = 0; | |
172 | while (cmdlist) { | |
173 | cmdlines[i].pid = cmdlist->pid; | |
174 | cmdlines[i].comm = cmdlist->comm; | |
175 | i++; | |
176 | item = cmdlist; | |
177 | cmdlist = cmdlist->next; | |
178 | free(item); | |
179 | } | |
180 | ||
181 | qsort(cmdlines, pevent->cmdline_count, sizeof(*cmdlines), cmdline_cmp); | |
182 | ||
183 | pevent->cmdlines = cmdlines; | |
184 | pevent->cmdlist = NULL; | |
185 | ||
186 | return 0; | |
187 | } | |
188 | ||
27f94d52 | 189 | static const char *find_cmdline(struct pevent *pevent, int pid) |
f7d82350 SR |
190 | { |
191 | const struct cmdline *comm; | |
192 | struct cmdline key; | |
193 | ||
194 | if (!pid) | |
195 | return "<idle>"; | |
196 | ||
a6d2a61a ACM |
197 | if (!pevent->cmdlines && cmdline_init(pevent)) |
198 | return "<not enough memory for cmdlines!>"; | |
f7d82350 SR |
199 | |
200 | key.pid = pid; | |
201 | ||
202 | comm = bsearch(&key, pevent->cmdlines, pevent->cmdline_count, | |
203 | sizeof(*pevent->cmdlines), cmdline_cmp); | |
204 | ||
205 | if (comm) | |
206 | return comm->comm; | |
207 | return "<...>"; | |
208 | } | |
209 | ||
210 | /** | |
211 | * pevent_pid_is_registered - return if a pid has a cmdline registered | |
212 | * @pevent: handle for the pevent | |
213 | * @pid: The pid to check if it has a cmdline registered with. | |
214 | * | |
215 | * Returns 1 if the pid has a cmdline mapped to it | |
216 | * 0 otherwise. | |
217 | */ | |
218 | int pevent_pid_is_registered(struct pevent *pevent, int pid) | |
219 | { | |
220 | const struct cmdline *comm; | |
221 | struct cmdline key; | |
222 | ||
223 | if (!pid) | |
224 | return 1; | |
225 | ||
a6d2a61a ACM |
226 | if (!pevent->cmdlines && cmdline_init(pevent)) |
227 | return 0; | |
f7d82350 SR |
228 | |
229 | key.pid = pid; | |
230 | ||
231 | comm = bsearch(&key, pevent->cmdlines, pevent->cmdline_count, | |
232 | sizeof(*pevent->cmdlines), cmdline_cmp); | |
233 | ||
234 | if (comm) | |
235 | return 1; | |
236 | return 0; | |
237 | } | |
238 | ||
239 | /* | |
240 | * If the command lines have been converted to an array, then | |
241 | * we must add this pid. This is much slower than when cmdlines | |
242 | * are added before the array is initialized. | |
243 | */ | |
244 | static int add_new_comm(struct pevent *pevent, const char *comm, int pid) | |
245 | { | |
246 | struct cmdline *cmdlines = pevent->cmdlines; | |
247 | const struct cmdline *cmdline; | |
248 | struct cmdline key; | |
249 | ||
250 | if (!pid) | |
251 | return 0; | |
252 | ||
253 | /* avoid duplicates */ | |
254 | key.pid = pid; | |
255 | ||
256 | cmdline = bsearch(&key, pevent->cmdlines, pevent->cmdline_count, | |
257 | sizeof(*pevent->cmdlines), cmdline_cmp); | |
258 | if (cmdline) { | |
259 | errno = EEXIST; | |
260 | return -1; | |
261 | } | |
262 | ||
263 | cmdlines = realloc(cmdlines, sizeof(*cmdlines) * (pevent->cmdline_count + 1)); | |
264 | if (!cmdlines) { | |
265 | errno = ENOMEM; | |
266 | return -1; | |
267 | } | |
268 | ||
f7d82350 | 269 | cmdlines[pevent->cmdline_count].comm = strdup(comm); |
a6d2a61a ACM |
270 | if (!cmdlines[pevent->cmdline_count].comm) { |
271 | free(cmdlines); | |
272 | errno = ENOMEM; | |
273 | return -1; | |
274 | } | |
275 | ||
276 | cmdlines[pevent->cmdline_count].pid = pid; | |
f7d82350 SR |
277 | |
278 | if (cmdlines[pevent->cmdline_count].comm) | |
279 | pevent->cmdline_count++; | |
280 | ||
281 | qsort(cmdlines, pevent->cmdline_count, sizeof(*cmdlines), cmdline_cmp); | |
282 | pevent->cmdlines = cmdlines; | |
283 | ||
284 | return 0; | |
285 | } | |
286 | ||
287 | /** | |
288 | * pevent_register_comm - register a pid / comm mapping | |
289 | * @pevent: handle for the pevent | |
290 | * @comm: the command line to register | |
291 | * @pid: the pid to map the command line to | |
292 | * | |
293 | * This adds a mapping to search for command line names with | |
294 | * a given pid. The comm is duplicated. | |
295 | */ | |
296 | int pevent_register_comm(struct pevent *pevent, const char *comm, int pid) | |
297 | { | |
298 | struct cmdline_list *item; | |
299 | ||
300 | if (pevent->cmdlines) | |
301 | return add_new_comm(pevent, comm, pid); | |
302 | ||
a6d2a61a ACM |
303 | item = malloc(sizeof(*item)); |
304 | if (!item) | |
305 | return -1; | |
306 | ||
deab6f55 JB |
307 | if (comm) |
308 | item->comm = strdup(comm); | |
309 | else | |
310 | item->comm = strdup("<...>"); | |
a6d2a61a ACM |
311 | if (!item->comm) { |
312 | free(item); | |
313 | return -1; | |
314 | } | |
f7d82350 SR |
315 | item->pid = pid; |
316 | item->next = pevent->cmdlist; | |
317 | ||
318 | pevent->cmdlist = item; | |
319 | pevent->cmdline_count++; | |
320 | ||
321 | return 0; | |
322 | } | |
323 | ||
99ad1417 | 324 | int pevent_register_trace_clock(struct pevent *pevent, const char *trace_clock) |
1b372ca5 | 325 | { |
99ad1417 SRRH |
326 | pevent->trace_clock = strdup(trace_clock); |
327 | if (!pevent->trace_clock) { | |
328 | errno = ENOMEM; | |
329 | return -1; | |
330 | } | |
331 | return 0; | |
1b372ca5 YY |
332 | } |
333 | ||
f7d82350 SR |
334 | struct func_map { |
335 | unsigned long long addr; | |
336 | char *func; | |
337 | char *mod; | |
338 | }; | |
339 | ||
340 | struct func_list { | |
341 | struct func_list *next; | |
342 | unsigned long long addr; | |
343 | char *func; | |
344 | char *mod; | |
345 | }; | |
346 | ||
347 | static int func_cmp(const void *a, const void *b) | |
348 | { | |
349 | const struct func_map *fa = a; | |
350 | const struct func_map *fb = b; | |
351 | ||
352 | if (fa->addr < fb->addr) | |
353 | return -1; | |
354 | if (fa->addr > fb->addr) | |
355 | return 1; | |
356 | ||
357 | return 0; | |
358 | } | |
359 | ||
360 | /* | |
361 | * We are searching for a record in between, not an exact | |
362 | * match. | |
363 | */ | |
364 | static int func_bcmp(const void *a, const void *b) | |
365 | { | |
366 | const struct func_map *fa = a; | |
367 | const struct func_map *fb = b; | |
368 | ||
369 | if ((fa->addr == fb->addr) || | |
370 | ||
371 | (fa->addr > fb->addr && | |
372 | fa->addr < (fb+1)->addr)) | |
373 | return 0; | |
374 | ||
375 | if (fa->addr < fb->addr) | |
376 | return -1; | |
377 | ||
378 | return 1; | |
379 | } | |
380 | ||
381 | static int func_map_init(struct pevent *pevent) | |
382 | { | |
383 | struct func_list *funclist; | |
384 | struct func_list *item; | |
385 | struct func_map *func_map; | |
386 | int i; | |
387 | ||
a6d2a61a ACM |
388 | func_map = malloc(sizeof(*func_map) * (pevent->func_count + 1)); |
389 | if (!func_map) | |
390 | return -1; | |
391 | ||
f7d82350 SR |
392 | funclist = pevent->funclist; |
393 | ||
394 | i = 0; | |
395 | while (funclist) { | |
396 | func_map[i].func = funclist->func; | |
397 | func_map[i].addr = funclist->addr; | |
398 | func_map[i].mod = funclist->mod; | |
399 | i++; | |
400 | item = funclist; | |
401 | funclist = funclist->next; | |
402 | free(item); | |
403 | } | |
404 | ||
405 | qsort(func_map, pevent->func_count, sizeof(*func_map), func_cmp); | |
406 | ||
407 | /* | |
408 | * Add a special record at the end. | |
409 | */ | |
410 | func_map[pevent->func_count].func = NULL; | |
411 | func_map[pevent->func_count].addr = 0; | |
412 | func_map[pevent->func_count].mod = NULL; | |
413 | ||
414 | pevent->func_map = func_map; | |
415 | pevent->funclist = NULL; | |
416 | ||
417 | return 0; | |
418 | } | |
419 | ||
420 | static struct func_map * | |
421 | find_func(struct pevent *pevent, unsigned long long addr) | |
422 | { | |
423 | struct func_map *func; | |
424 | struct func_map key; | |
425 | ||
426 | if (!pevent->func_map) | |
427 | func_map_init(pevent); | |
428 | ||
429 | key.addr = addr; | |
430 | ||
431 | func = bsearch(&key, pevent->func_map, pevent->func_count, | |
432 | sizeof(*pevent->func_map), func_bcmp); | |
433 | ||
434 | return func; | |
435 | } | |
436 | ||
437 | /** | |
438 | * pevent_find_function - find a function by a given address | |
439 | * @pevent: handle for the pevent | |
440 | * @addr: the address to find the function with | |
441 | * | |
442 | * Returns a pointer to the function stored that has the given | |
443 | * address. Note, the address does not have to be exact, it | |
444 | * will select the function that would contain the address. | |
445 | */ | |
446 | const char *pevent_find_function(struct pevent *pevent, unsigned long long addr) | |
447 | { | |
448 | struct func_map *map; | |
449 | ||
450 | map = find_func(pevent, addr); | |
451 | if (!map) | |
452 | return NULL; | |
453 | ||
454 | return map->func; | |
455 | } | |
456 | ||
457 | /** | |
458 | * pevent_find_function_address - find a function address by a given address | |
459 | * @pevent: handle for the pevent | |
460 | * @addr: the address to find the function with | |
461 | * | |
462 | * Returns the address the function starts at. This can be used in | |
463 | * conjunction with pevent_find_function to print both the function | |
464 | * name and the function offset. | |
465 | */ | |
466 | unsigned long long | |
467 | pevent_find_function_address(struct pevent *pevent, unsigned long long addr) | |
468 | { | |
469 | struct func_map *map; | |
470 | ||
471 | map = find_func(pevent, addr); | |
472 | if (!map) | |
473 | return 0; | |
474 | ||
475 | return map->addr; | |
476 | } | |
477 | ||
478 | /** | |
479 | * pevent_register_function - register a function with a given address | |
480 | * @pevent: handle for the pevent | |
481 | * @function: the function name to register | |
482 | * @addr: the address the function starts at | |
483 | * @mod: the kernel module the function may be in (NULL for none) | |
484 | * | |
485 | * This registers a function name with an address and module. | |
486 | * The @func passed in is duplicated. | |
487 | */ | |
488 | int pevent_register_function(struct pevent *pevent, char *func, | |
489 | unsigned long long addr, char *mod) | |
490 | { | |
a6d2a61a | 491 | struct func_list *item = malloc(sizeof(*item)); |
f7d82350 | 492 | |
a6d2a61a ACM |
493 | if (!item) |
494 | return -1; | |
f7d82350 SR |
495 | |
496 | item->next = pevent->funclist; | |
497 | item->func = strdup(func); | |
a6d2a61a ACM |
498 | if (!item->func) |
499 | goto out_free; | |
500 | ||
501 | if (mod) { | |
f7d82350 | 502 | item->mod = strdup(mod); |
a6d2a61a ACM |
503 | if (!item->mod) |
504 | goto out_free_func; | |
505 | } else | |
f7d82350 SR |
506 | item->mod = NULL; |
507 | item->addr = addr; | |
508 | ||
ca63858e | 509 | pevent->funclist = item; |
f7d82350 SR |
510 | pevent->func_count++; |
511 | ||
512 | return 0; | |
a6d2a61a ACM |
513 | |
514 | out_free_func: | |
515 | free(item->func); | |
516 | item->func = NULL; | |
517 | out_free: | |
518 | free(item); | |
519 | errno = ENOMEM; | |
520 | return -1; | |
f7d82350 SR |
521 | } |
522 | ||
523 | /** | |
524 | * pevent_print_funcs - print out the stored functions | |
525 | * @pevent: handle for the pevent | |
526 | * | |
527 | * This prints out the stored functions. | |
528 | */ | |
529 | void pevent_print_funcs(struct pevent *pevent) | |
530 | { | |
531 | int i; | |
532 | ||
533 | if (!pevent->func_map) | |
534 | func_map_init(pevent); | |
535 | ||
536 | for (i = 0; i < (int)pevent->func_count; i++) { | |
537 | printf("%016llx %s", | |
538 | pevent->func_map[i].addr, | |
539 | pevent->func_map[i].func); | |
540 | if (pevent->func_map[i].mod) | |
541 | printf(" [%s]\n", pevent->func_map[i].mod); | |
542 | else | |
543 | printf("\n"); | |
544 | } | |
545 | } | |
546 | ||
547 | struct printk_map { | |
548 | unsigned long long addr; | |
549 | char *printk; | |
550 | }; | |
551 | ||
552 | struct printk_list { | |
553 | struct printk_list *next; | |
554 | unsigned long long addr; | |
555 | char *printk; | |
556 | }; | |
557 | ||
558 | static int printk_cmp(const void *a, const void *b) | |
559 | { | |
0fc45ef5 NK |
560 | const struct printk_map *pa = a; |
561 | const struct printk_map *pb = b; | |
f7d82350 | 562 | |
0fc45ef5 | 563 | if (pa->addr < pb->addr) |
f7d82350 | 564 | return -1; |
0fc45ef5 | 565 | if (pa->addr > pb->addr) |
f7d82350 SR |
566 | return 1; |
567 | ||
568 | return 0; | |
569 | } | |
570 | ||
a6d2a61a | 571 | static int printk_map_init(struct pevent *pevent) |
f7d82350 SR |
572 | { |
573 | struct printk_list *printklist; | |
574 | struct printk_list *item; | |
575 | struct printk_map *printk_map; | |
576 | int i; | |
577 | ||
a6d2a61a ACM |
578 | printk_map = malloc(sizeof(*printk_map) * (pevent->printk_count + 1)); |
579 | if (!printk_map) | |
580 | return -1; | |
f7d82350 SR |
581 | |
582 | printklist = pevent->printklist; | |
583 | ||
584 | i = 0; | |
585 | while (printklist) { | |
586 | printk_map[i].printk = printklist->printk; | |
587 | printk_map[i].addr = printklist->addr; | |
588 | i++; | |
589 | item = printklist; | |
590 | printklist = printklist->next; | |
591 | free(item); | |
592 | } | |
593 | ||
594 | qsort(printk_map, pevent->printk_count, sizeof(*printk_map), printk_cmp); | |
595 | ||
596 | pevent->printk_map = printk_map; | |
597 | pevent->printklist = NULL; | |
a6d2a61a ACM |
598 | |
599 | return 0; | |
f7d82350 SR |
600 | } |
601 | ||
602 | static struct printk_map * | |
603 | find_printk(struct pevent *pevent, unsigned long long addr) | |
604 | { | |
605 | struct printk_map *printk; | |
606 | struct printk_map key; | |
607 | ||
a6d2a61a ACM |
608 | if (!pevent->printk_map && printk_map_init(pevent)) |
609 | return NULL; | |
f7d82350 SR |
610 | |
611 | key.addr = addr; | |
612 | ||
613 | printk = bsearch(&key, pevent->printk_map, pevent->printk_count, | |
614 | sizeof(*pevent->printk_map), printk_cmp); | |
615 | ||
616 | return printk; | |
617 | } | |
618 | ||
619 | /** | |
620 | * pevent_register_print_string - register a string by its address | |
621 | * @pevent: handle for the pevent | |
622 | * @fmt: the string format to register | |
623 | * @addr: the address the string was located at | |
624 | * | |
625 | * This registers a string by the address it was stored in the kernel. | |
626 | * The @fmt passed in is duplicated. | |
627 | */ | |
18900af8 | 628 | int pevent_register_print_string(struct pevent *pevent, const char *fmt, |
f7d82350 SR |
629 | unsigned long long addr) |
630 | { | |
a6d2a61a | 631 | struct printk_list *item = malloc(sizeof(*item)); |
18900af8 | 632 | char *p; |
f7d82350 | 633 | |
a6d2a61a ACM |
634 | if (!item) |
635 | return -1; | |
f7d82350 SR |
636 | |
637 | item->next = pevent->printklist; | |
f7d82350 SR |
638 | item->addr = addr; |
639 | ||
18900af8 SRRH |
640 | /* Strip off quotes and '\n' from the end */ |
641 | if (fmt[0] == '"') | |
642 | fmt++; | |
a6d2a61a | 643 | item->printk = strdup(fmt); |
ca63858e | 644 | if (!item->printk) |
a6d2a61a | 645 | goto out_free; |
ca63858e | 646 | |
18900af8 SRRH |
647 | p = item->printk + strlen(item->printk) - 1; |
648 | if (*p == '"') | |
649 | *p = 0; | |
650 | ||
651 | p -= 2; | |
652 | if (strcmp(p, "\\n") == 0) | |
653 | *p = 0; | |
654 | ||
ca63858e | 655 | pevent->printklist = item; |
f7d82350 SR |
656 | pevent->printk_count++; |
657 | ||
658 | return 0; | |
a6d2a61a ACM |
659 | |
660 | out_free: | |
661 | free(item); | |
662 | errno = ENOMEM; | |
663 | return -1; | |
f7d82350 SR |
664 | } |
665 | ||
666 | /** | |
667 | * pevent_print_printk - print out the stored strings | |
668 | * @pevent: handle for the pevent | |
669 | * | |
670 | * This prints the string formats that were stored. | |
671 | */ | |
672 | void pevent_print_printk(struct pevent *pevent) | |
673 | { | |
674 | int i; | |
675 | ||
676 | if (!pevent->printk_map) | |
677 | printk_map_init(pevent); | |
678 | ||
679 | for (i = 0; i < (int)pevent->printk_count; i++) { | |
680 | printf("%016llx %s\n", | |
681 | pevent->printk_map[i].addr, | |
682 | pevent->printk_map[i].printk); | |
683 | } | |
684 | } | |
685 | ||
686 | static struct event_format *alloc_event(void) | |
687 | { | |
87162d81 | 688 | return calloc(1, sizeof(struct event_format)); |
f7d82350 SR |
689 | } |
690 | ||
a6d2a61a | 691 | static int add_event(struct pevent *pevent, struct event_format *event) |
f7d82350 SR |
692 | { |
693 | int i; | |
a6d2a61a ACM |
694 | struct event_format **events = realloc(pevent->events, sizeof(event) * |
695 | (pevent->nr_events + 1)); | |
696 | if (!events) | |
697 | return -1; | |
f7d82350 | 698 | |
a6d2a61a | 699 | pevent->events = events; |
f7d82350 SR |
700 | |
701 | for (i = 0; i < pevent->nr_events; i++) { | |
702 | if (pevent->events[i]->id > event->id) | |
703 | break; | |
704 | } | |
705 | if (i < pevent->nr_events) | |
706 | memmove(&pevent->events[i + 1], | |
707 | &pevent->events[i], | |
708 | sizeof(event) * (pevent->nr_events - i)); | |
709 | ||
710 | pevent->events[i] = event; | |
711 | pevent->nr_events++; | |
712 | ||
713 | event->pevent = pevent; | |
a6d2a61a ACM |
714 | |
715 | return 0; | |
f7d82350 SR |
716 | } |
717 | ||
718 | static int event_item_type(enum event_type type) | |
719 | { | |
720 | switch (type) { | |
721 | case EVENT_ITEM ... EVENT_SQUOTE: | |
722 | return 1; | |
723 | case EVENT_ERROR ... EVENT_DELIM: | |
724 | default: | |
725 | return 0; | |
726 | } | |
727 | } | |
728 | ||
729 | static void free_flag_sym(struct print_flag_sym *fsym) | |
730 | { | |
731 | struct print_flag_sym *next; | |
732 | ||
733 | while (fsym) { | |
734 | next = fsym->next; | |
735 | free(fsym->value); | |
736 | free(fsym->str); | |
737 | free(fsym); | |
738 | fsym = next; | |
739 | } | |
740 | } | |
741 | ||
742 | static void free_arg(struct print_arg *arg) | |
743 | { | |
744 | struct print_arg *farg; | |
745 | ||
746 | if (!arg) | |
747 | return; | |
748 | ||
749 | switch (arg->type) { | |
750 | case PRINT_ATOM: | |
751 | free(arg->atom.atom); | |
752 | break; | |
753 | case PRINT_FIELD: | |
754 | free(arg->field.name); | |
755 | break; | |
756 | case PRINT_FLAGS: | |
757 | free_arg(arg->flags.field); | |
758 | free(arg->flags.delim); | |
759 | free_flag_sym(arg->flags.flags); | |
760 | break; | |
761 | case PRINT_SYMBOL: | |
762 | free_arg(arg->symbol.field); | |
763 | free_flag_sym(arg->symbol.symbols); | |
764 | break; | |
e080e6f1 NK |
765 | case PRINT_HEX: |
766 | free_arg(arg->hex.field); | |
767 | free_arg(arg->hex.size); | |
768 | break; | |
b839e1e8 JM |
769 | case PRINT_INT_ARRAY: |
770 | free_arg(arg->int_array.field); | |
771 | free_arg(arg->int_array.count); | |
772 | free_arg(arg->int_array.el_size); | |
773 | break; | |
f7d82350 SR |
774 | case PRINT_TYPE: |
775 | free(arg->typecast.type); | |
776 | free_arg(arg->typecast.item); | |
777 | break; | |
778 | case PRINT_STRING: | |
779 | case PRINT_BSTRING: | |
780 | free(arg->string.string); | |
781 | break; | |
473a778a SRRH |
782 | case PRINT_BITMASK: |
783 | free(arg->bitmask.bitmask); | |
784 | break; | |
f7d82350 SR |
785 | case PRINT_DYNAMIC_ARRAY: |
786 | free(arg->dynarray.index); | |
787 | break; | |
788 | case PRINT_OP: | |
789 | free(arg->op.op); | |
790 | free_arg(arg->op.left); | |
791 | free_arg(arg->op.right); | |
792 | break; | |
793 | case PRINT_FUNC: | |
794 | while (arg->func.args) { | |
795 | farg = arg->func.args; | |
796 | arg->func.args = farg->next; | |
797 | free_arg(farg); | |
798 | } | |
799 | break; | |
800 | ||
801 | case PRINT_NULL: | |
802 | default: | |
803 | break; | |
804 | } | |
805 | ||
806 | free(arg); | |
807 | } | |
808 | ||
809 | static enum event_type get_type(int ch) | |
810 | { | |
811 | if (ch == '\n') | |
812 | return EVENT_NEWLINE; | |
813 | if (isspace(ch)) | |
814 | return EVENT_SPACE; | |
815 | if (isalnum(ch) || ch == '_') | |
816 | return EVENT_ITEM; | |
817 | if (ch == '\'') | |
818 | return EVENT_SQUOTE; | |
819 | if (ch == '"') | |
820 | return EVENT_DQUOTE; | |
821 | if (!isprint(ch)) | |
822 | return EVENT_NONE; | |
823 | if (ch == '(' || ch == ')' || ch == ',') | |
824 | return EVENT_DELIM; | |
825 | ||
826 | return EVENT_OP; | |
827 | } | |
828 | ||
829 | static int __read_char(void) | |
830 | { | |
831 | if (input_buf_ptr >= input_buf_siz) | |
832 | return -1; | |
833 | ||
834 | return input_buf[input_buf_ptr++]; | |
835 | } | |
836 | ||
837 | static int __peek_char(void) | |
838 | { | |
839 | if (input_buf_ptr >= input_buf_siz) | |
840 | return -1; | |
841 | ||
842 | return input_buf[input_buf_ptr]; | |
843 | } | |
844 | ||
845 | /** | |
846 | * pevent_peek_char - peek at the next character that will be read | |
847 | * | |
848 | * Returns the next character read, or -1 if end of buffer. | |
849 | */ | |
850 | int pevent_peek_char(void) | |
851 | { | |
852 | return __peek_char(); | |
853 | } | |
854 | ||
deba3fb2 NK |
855 | static int extend_token(char **tok, char *buf, int size) |
856 | { | |
857 | char *newtok = realloc(*tok, size); | |
858 | ||
859 | if (!newtok) { | |
860 | free(*tok); | |
861 | *tok = NULL; | |
862 | return -1; | |
863 | } | |
864 | ||
865 | if (!*tok) | |
866 | strcpy(newtok, buf); | |
867 | else | |
868 | strcat(newtok, buf); | |
869 | *tok = newtok; | |
870 | ||
871 | return 0; | |
872 | } | |
873 | ||
f7d82350 SR |
874 | static enum event_type force_token(const char *str, char **tok); |
875 | ||
876 | static enum event_type __read_token(char **tok) | |
877 | { | |
878 | char buf[BUFSIZ]; | |
879 | int ch, last_ch, quote_ch, next_ch; | |
880 | int i = 0; | |
881 | int tok_size = 0; | |
882 | enum event_type type; | |
883 | ||
884 | *tok = NULL; | |
885 | ||
886 | ||
887 | ch = __read_char(); | |
888 | if (ch < 0) | |
889 | return EVENT_NONE; | |
890 | ||
891 | type = get_type(ch); | |
892 | if (type == EVENT_NONE) | |
893 | return type; | |
894 | ||
895 | buf[i++] = ch; | |
896 | ||
897 | switch (type) { | |
898 | case EVENT_NEWLINE: | |
899 | case EVENT_DELIM: | |
0dbca1e3 ACM |
900 | if (asprintf(tok, "%c", ch) < 0) |
901 | return EVENT_ERROR; | |
902 | ||
f7d82350 SR |
903 | return type; |
904 | ||
905 | case EVENT_OP: | |
906 | switch (ch) { | |
907 | case '-': | |
908 | next_ch = __peek_char(); | |
909 | if (next_ch == '>') { | |
910 | buf[i++] = __read_char(); | |
911 | break; | |
912 | } | |
913 | /* fall through */ | |
914 | case '+': | |
915 | case '|': | |
916 | case '&': | |
917 | case '>': | |
918 | case '<': | |
919 | last_ch = ch; | |
920 | ch = __peek_char(); | |
921 | if (ch != last_ch) | |
922 | goto test_equal; | |
923 | buf[i++] = __read_char(); | |
924 | switch (last_ch) { | |
925 | case '>': | |
926 | case '<': | |
927 | goto test_equal; | |
928 | default: | |
929 | break; | |
930 | } | |
931 | break; | |
932 | case '!': | |
933 | case '=': | |
934 | goto test_equal; | |
935 | default: /* what should we do instead? */ | |
936 | break; | |
937 | } | |
938 | buf[i] = 0; | |
939 | *tok = strdup(buf); | |
940 | return type; | |
941 | ||
942 | test_equal: | |
943 | ch = __peek_char(); | |
944 | if (ch == '=') | |
945 | buf[i++] = __read_char(); | |
946 | goto out; | |
947 | ||
948 | case EVENT_DQUOTE: | |
949 | case EVENT_SQUOTE: | |
950 | /* don't keep quotes */ | |
951 | i--; | |
952 | quote_ch = ch; | |
953 | last_ch = 0; | |
954 | concat: | |
955 | do { | |
956 | if (i == (BUFSIZ - 1)) { | |
957 | buf[i] = 0; | |
f7d82350 | 958 | tok_size += BUFSIZ; |
deba3fb2 NK |
959 | |
960 | if (extend_token(tok, buf, tok_size) < 0) | |
961 | return EVENT_NONE; | |
f7d82350 SR |
962 | i = 0; |
963 | } | |
964 | last_ch = ch; | |
965 | ch = __read_char(); | |
966 | buf[i++] = ch; | |
967 | /* the '\' '\' will cancel itself */ | |
968 | if (ch == '\\' && last_ch == '\\') | |
969 | last_ch = 0; | |
970 | } while (ch != quote_ch || last_ch == '\\'); | |
971 | /* remove the last quote */ | |
972 | i--; | |
973 | ||
974 | /* | |
975 | * For strings (double quotes) check the next token. | |
976 | * If it is another string, concatinate the two. | |
977 | */ | |
978 | if (type == EVENT_DQUOTE) { | |
979 | unsigned long long save_input_buf_ptr = input_buf_ptr; | |
980 | ||
981 | do { | |
982 | ch = __read_char(); | |
983 | } while (isspace(ch)); | |
984 | if (ch == '"') | |
985 | goto concat; | |
986 | input_buf_ptr = save_input_buf_ptr; | |
987 | } | |
988 | ||
989 | goto out; | |
990 | ||
991 | case EVENT_ERROR ... EVENT_SPACE: | |
992 | case EVENT_ITEM: | |
993 | default: | |
994 | break; | |
995 | } | |
996 | ||
997 | while (get_type(__peek_char()) == type) { | |
998 | if (i == (BUFSIZ - 1)) { | |
999 | buf[i] = 0; | |
deba3fb2 | 1000 | tok_size += BUFSIZ; |
f7d82350 | 1001 | |
deba3fb2 | 1002 | if (extend_token(tok, buf, tok_size) < 0) |
f7d82350 | 1003 | return EVENT_NONE; |
f7d82350 SR |
1004 | i = 0; |
1005 | } | |
1006 | ch = __read_char(); | |
1007 | buf[i++] = ch; | |
1008 | } | |
1009 | ||
1010 | out: | |
1011 | buf[i] = 0; | |
deba3fb2 | 1012 | if (extend_token(tok, buf, tok_size + i + 1) < 0) |
f7d82350 SR |
1013 | return EVENT_NONE; |
1014 | ||
1015 | if (type == EVENT_ITEM) { | |
1016 | /* | |
1017 | * Older versions of the kernel has a bug that | |
1018 | * creates invalid symbols and will break the mac80211 | |
1019 | * parsing. This is a work around to that bug. | |
1020 | * | |
1021 | * See Linux kernel commit: | |
1022 | * 811cb50baf63461ce0bdb234927046131fc7fa8b | |
1023 | */ | |
1024 | if (strcmp(*tok, "LOCAL_PR_FMT") == 0) { | |
1025 | free(*tok); | |
1026 | *tok = NULL; | |
1027 | return force_token("\"\%s\" ", tok); | |
1028 | } else if (strcmp(*tok, "STA_PR_FMT") == 0) { | |
1029 | free(*tok); | |
1030 | *tok = NULL; | |
1031 | return force_token("\" sta:%pM\" ", tok); | |
1032 | } else if (strcmp(*tok, "VIF_PR_FMT") == 0) { | |
1033 | free(*tok); | |
1034 | *tok = NULL; | |
1035 | return force_token("\" vif:%p(%d)\" ", tok); | |
1036 | } | |
1037 | } | |
1038 | ||
1039 | return type; | |
1040 | } | |
1041 | ||
1042 | static enum event_type force_token(const char *str, char **tok) | |
1043 | { | |
1044 | const char *save_input_buf; | |
1045 | unsigned long long save_input_buf_ptr; | |
1046 | unsigned long long save_input_buf_siz; | |
1047 | enum event_type type; | |
1048 | ||
1049 | /* save off the current input pointers */ | |
1050 | save_input_buf = input_buf; | |
1051 | save_input_buf_ptr = input_buf_ptr; | |
1052 | save_input_buf_siz = input_buf_siz; | |
1053 | ||
1054 | init_input_buf(str, strlen(str)); | |
1055 | ||
1056 | type = __read_token(tok); | |
1057 | ||
1058 | /* reset back to original token */ | |
1059 | input_buf = save_input_buf; | |
1060 | input_buf_ptr = save_input_buf_ptr; | |
1061 | input_buf_siz = save_input_buf_siz; | |
1062 | ||
1063 | return type; | |
1064 | } | |
1065 | ||
1066 | static void free_token(char *tok) | |
1067 | { | |
1068 | if (tok) | |
1069 | free(tok); | |
1070 | } | |
1071 | ||
1072 | static enum event_type read_token(char **tok) | |
1073 | { | |
1074 | enum event_type type; | |
1075 | ||
1076 | for (;;) { | |
1077 | type = __read_token(tok); | |
1078 | if (type != EVENT_SPACE) | |
1079 | return type; | |
1080 | ||
1081 | free_token(*tok); | |
1082 | } | |
1083 | ||
1084 | /* not reached */ | |
1085 | *tok = NULL; | |
1086 | return EVENT_NONE; | |
1087 | } | |
1088 | ||
1089 | /** | |
1090 | * pevent_read_token - access to utilites to use the pevent parser | |
1091 | * @tok: The token to return | |
1092 | * | |
1093 | * This will parse tokens from the string given by | |
1094 | * pevent_init_data(). | |
1095 | * | |
1096 | * Returns the token type. | |
1097 | */ | |
1098 | enum event_type pevent_read_token(char **tok) | |
1099 | { | |
1100 | return read_token(tok); | |
1101 | } | |
1102 | ||
1103 | /** | |
1104 | * pevent_free_token - free a token returned by pevent_read_token | |
1105 | * @token: the token to free | |
1106 | */ | |
1107 | void pevent_free_token(char *token) | |
1108 | { | |
1109 | free_token(token); | |
1110 | } | |
1111 | ||
1112 | /* no newline */ | |
1113 | static enum event_type read_token_item(char **tok) | |
1114 | { | |
1115 | enum event_type type; | |
1116 | ||
1117 | for (;;) { | |
1118 | type = __read_token(tok); | |
1119 | if (type != EVENT_SPACE && type != EVENT_NEWLINE) | |
1120 | return type; | |
1121 | free_token(*tok); | |
1122 | *tok = NULL; | |
1123 | } | |
1124 | ||
1125 | /* not reached */ | |
1126 | *tok = NULL; | |
1127 | return EVENT_NONE; | |
1128 | } | |
1129 | ||
1130 | static int test_type(enum event_type type, enum event_type expect) | |
1131 | { | |
1132 | if (type != expect) { | |
1133 | do_warning("Error: expected type %d but read %d", | |
1134 | expect, type); | |
1135 | return -1; | |
1136 | } | |
1137 | return 0; | |
1138 | } | |
1139 | ||
1140 | static int test_type_token(enum event_type type, const char *token, | |
1141 | enum event_type expect, const char *expect_tok) | |
1142 | { | |
1143 | if (type != expect) { | |
1144 | do_warning("Error: expected type %d but read %d", | |
1145 | expect, type); | |
1146 | return -1; | |
1147 | } | |
1148 | ||
1149 | if (strcmp(token, expect_tok) != 0) { | |
1150 | do_warning("Error: expected '%s' but read '%s'", | |
1151 | expect_tok, token); | |
1152 | return -1; | |
1153 | } | |
1154 | return 0; | |
1155 | } | |
1156 | ||
1157 | static int __read_expect_type(enum event_type expect, char **tok, int newline_ok) | |
1158 | { | |
1159 | enum event_type type; | |
1160 | ||
1161 | if (newline_ok) | |
1162 | type = read_token(tok); | |
1163 | else | |
1164 | type = read_token_item(tok); | |
1165 | return test_type(type, expect); | |
1166 | } | |
1167 | ||
1168 | static int read_expect_type(enum event_type expect, char **tok) | |
1169 | { | |
1170 | return __read_expect_type(expect, tok, 1); | |
1171 | } | |
1172 | ||
1173 | static int __read_expected(enum event_type expect, const char *str, | |
1174 | int newline_ok) | |
1175 | { | |
1176 | enum event_type type; | |
1177 | char *token; | |
1178 | int ret; | |
1179 | ||
1180 | if (newline_ok) | |
1181 | type = read_token(&token); | |
1182 | else | |
1183 | type = read_token_item(&token); | |
1184 | ||
1185 | ret = test_type_token(type, token, expect, str); | |
1186 | ||
1187 | free_token(token); | |
1188 | ||
1189 | return ret; | |
1190 | } | |
1191 | ||
1192 | static int read_expected(enum event_type expect, const char *str) | |
1193 | { | |
1194 | return __read_expected(expect, str, 1); | |
1195 | } | |
1196 | ||
1197 | static int read_expected_item(enum event_type expect, const char *str) | |
1198 | { | |
1199 | return __read_expected(expect, str, 0); | |
1200 | } | |
1201 | ||
1202 | static char *event_read_name(void) | |
1203 | { | |
1204 | char *token; | |
1205 | ||
1206 | if (read_expected(EVENT_ITEM, "name") < 0) | |
1207 | return NULL; | |
1208 | ||
1209 | if (read_expected(EVENT_OP, ":") < 0) | |
1210 | return NULL; | |
1211 | ||
1212 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
1213 | goto fail; | |
1214 | ||
1215 | return token; | |
1216 | ||
1217 | fail: | |
1218 | free_token(token); | |
1219 | return NULL; | |
1220 | } | |
1221 | ||
1222 | static int event_read_id(void) | |
1223 | { | |
1224 | char *token; | |
1225 | int id; | |
1226 | ||
1227 | if (read_expected_item(EVENT_ITEM, "ID") < 0) | |
1228 | return -1; | |
1229 | ||
1230 | if (read_expected(EVENT_OP, ":") < 0) | |
1231 | return -1; | |
1232 | ||
1233 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
1234 | goto fail; | |
1235 | ||
1236 | id = strtoul(token, NULL, 0); | |
1237 | free_token(token); | |
1238 | return id; | |
1239 | ||
1240 | fail: | |
1241 | free_token(token); | |
1242 | return -1; | |
1243 | } | |
1244 | ||
1245 | static int field_is_string(struct format_field *field) | |
1246 | { | |
1247 | if ((field->flags & FIELD_IS_ARRAY) && | |
1248 | (strstr(field->type, "char") || strstr(field->type, "u8") || | |
1249 | strstr(field->type, "s8"))) | |
1250 | return 1; | |
1251 | ||
1252 | return 0; | |
1253 | } | |
1254 | ||
1255 | static int field_is_dynamic(struct format_field *field) | |
1256 | { | |
1257 | if (strncmp(field->type, "__data_loc", 10) == 0) | |
1258 | return 1; | |
1259 | ||
1260 | return 0; | |
1261 | } | |
1262 | ||
1263 | static int field_is_long(struct format_field *field) | |
1264 | { | |
1265 | /* includes long long */ | |
1266 | if (strstr(field->type, "long")) | |
1267 | return 1; | |
1268 | ||
1269 | return 0; | |
1270 | } | |
1271 | ||
e23c1a55 JO |
1272 | static unsigned int type_size(const char *name) |
1273 | { | |
1274 | /* This covers all FIELD_IS_STRING types. */ | |
1275 | static struct { | |
1276 | const char *type; | |
1277 | unsigned int size; | |
1278 | } table[] = { | |
1279 | { "u8", 1 }, | |
1280 | { "u16", 2 }, | |
1281 | { "u32", 4 }, | |
1282 | { "u64", 8 }, | |
1283 | { "s8", 1 }, | |
1284 | { "s16", 2 }, | |
1285 | { "s32", 4 }, | |
1286 | { "s64", 8 }, | |
1287 | { "char", 1 }, | |
1288 | { }, | |
1289 | }; | |
1290 | int i; | |
1291 | ||
1292 | for (i = 0; table[i].type; i++) { | |
1293 | if (!strcmp(table[i].type, name)) | |
1294 | return table[i].size; | |
1295 | } | |
1296 | ||
1297 | return 0; | |
1298 | } | |
1299 | ||
f7d82350 SR |
1300 | static int event_read_fields(struct event_format *event, struct format_field **fields) |
1301 | { | |
1302 | struct format_field *field = NULL; | |
1303 | enum event_type type; | |
1304 | char *token; | |
1305 | char *last_token; | |
1306 | int count = 0; | |
1307 | ||
1308 | do { | |
e23c1a55 JO |
1309 | unsigned int size_dynamic = 0; |
1310 | ||
f7d82350 SR |
1311 | type = read_token(&token); |
1312 | if (type == EVENT_NEWLINE) { | |
1313 | free_token(token); | |
1314 | return count; | |
1315 | } | |
1316 | ||
1317 | count++; | |
1318 | ||
1319 | if (test_type_token(type, token, EVENT_ITEM, "field")) | |
1320 | goto fail; | |
1321 | free_token(token); | |
1322 | ||
1323 | type = read_token(&token); | |
1324 | /* | |
1325 | * The ftrace fields may still use the "special" name. | |
1326 | * Just ignore it. | |
1327 | */ | |
1328 | if (event->flags & EVENT_FL_ISFTRACE && | |
1329 | type == EVENT_ITEM && strcmp(token, "special") == 0) { | |
1330 | free_token(token); | |
1331 | type = read_token(&token); | |
1332 | } | |
1333 | ||
1334 | if (test_type_token(type, token, EVENT_OP, ":") < 0) | |
1335 | goto fail; | |
1336 | ||
1337 | free_token(token); | |
1338 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
1339 | goto fail; | |
1340 | ||
1341 | last_token = token; | |
1342 | ||
87162d81 ACM |
1343 | field = calloc(1, sizeof(*field)); |
1344 | if (!field) | |
1345 | goto fail; | |
1346 | ||
f7d82350 SR |
1347 | field->event = event; |
1348 | ||
1349 | /* read the rest of the type */ | |
1350 | for (;;) { | |
1351 | type = read_token(&token); | |
1352 | if (type == EVENT_ITEM || | |
1353 | (type == EVENT_OP && strcmp(token, "*") == 0) || | |
1354 | /* | |
1355 | * Some of the ftrace fields are broken and have | |
1356 | * an illegal "." in them. | |
1357 | */ | |
1358 | (event->flags & EVENT_FL_ISFTRACE && | |
1359 | type == EVENT_OP && strcmp(token, ".") == 0)) { | |
1360 | ||
1361 | if (strcmp(token, "*") == 0) | |
1362 | field->flags |= FIELD_IS_POINTER; | |
1363 | ||
1364 | if (field->type) { | |
d286447f NK |
1365 | char *new_type; |
1366 | new_type = realloc(field->type, | |
1367 | strlen(field->type) + | |
1368 | strlen(last_token) + 2); | |
1369 | if (!new_type) { | |
1370 | free(last_token); | |
1371 | goto fail; | |
1372 | } | |
1373 | field->type = new_type; | |
f7d82350 SR |
1374 | strcat(field->type, " "); |
1375 | strcat(field->type, last_token); | |
1376 | free(last_token); | |
1377 | } else | |
1378 | field->type = last_token; | |
1379 | last_token = token; | |
1380 | continue; | |
1381 | } | |
1382 | ||
1383 | break; | |
1384 | } | |
1385 | ||
1386 | if (!field->type) { | |
3388cc3e | 1387 | do_warning_event(event, "%s: no type found", __func__); |
f7d82350 SR |
1388 | goto fail; |
1389 | } | |
1390 | field->name = last_token; | |
1391 | ||
1392 | if (test_type(type, EVENT_OP)) | |
1393 | goto fail; | |
1394 | ||
1395 | if (strcmp(token, "[") == 0) { | |
1396 | enum event_type last_type = type; | |
1397 | char *brackets = token; | |
d286447f | 1398 | char *new_brackets; |
f7d82350 SR |
1399 | int len; |
1400 | ||
1401 | field->flags |= FIELD_IS_ARRAY; | |
1402 | ||
1403 | type = read_token(&token); | |
1404 | ||
1405 | if (type == EVENT_ITEM) | |
1406 | field->arraylen = strtoul(token, NULL, 0); | |
1407 | else | |
1408 | field->arraylen = 0; | |
1409 | ||
1410 | while (strcmp(token, "]") != 0) { | |
1411 | if (last_type == EVENT_ITEM && | |
1412 | type == EVENT_ITEM) | |
1413 | len = 2; | |
1414 | else | |
1415 | len = 1; | |
1416 | last_type = type; | |
1417 | ||
d286447f NK |
1418 | new_brackets = realloc(brackets, |
1419 | strlen(brackets) + | |
1420 | strlen(token) + len); | |
1421 | if (!new_brackets) { | |
1422 | free(brackets); | |
1423 | goto fail; | |
1424 | } | |
1425 | brackets = new_brackets; | |
f7d82350 SR |
1426 | if (len == 2) |
1427 | strcat(brackets, " "); | |
1428 | strcat(brackets, token); | |
1429 | /* We only care about the last token */ | |
1430 | field->arraylen = strtoul(token, NULL, 0); | |
1431 | free_token(token); | |
1432 | type = read_token(&token); | |
1433 | if (type == EVENT_NONE) { | |
3388cc3e | 1434 | do_warning_event(event, "failed to find token"); |
f7d82350 SR |
1435 | goto fail; |
1436 | } | |
1437 | } | |
1438 | ||
1439 | free_token(token); | |
1440 | ||
d286447f NK |
1441 | new_brackets = realloc(brackets, strlen(brackets) + 2); |
1442 | if (!new_brackets) { | |
1443 | free(brackets); | |
1444 | goto fail; | |
1445 | } | |
1446 | brackets = new_brackets; | |
f7d82350 SR |
1447 | strcat(brackets, "]"); |
1448 | ||
1449 | /* add brackets to type */ | |
1450 | ||
1451 | type = read_token(&token); | |
1452 | /* | |
1453 | * If the next token is not an OP, then it is of | |
1454 | * the format: type [] item; | |
1455 | */ | |
1456 | if (type == EVENT_ITEM) { | |
d286447f NK |
1457 | char *new_type; |
1458 | new_type = realloc(field->type, | |
1459 | strlen(field->type) + | |
1460 | strlen(field->name) + | |
1461 | strlen(brackets) + 2); | |
1462 | if (!new_type) { | |
1463 | free(brackets); | |
1464 | goto fail; | |
1465 | } | |
1466 | field->type = new_type; | |
f7d82350 SR |
1467 | strcat(field->type, " "); |
1468 | strcat(field->type, field->name); | |
e23c1a55 | 1469 | size_dynamic = type_size(field->name); |
f7d82350 SR |
1470 | free_token(field->name); |
1471 | strcat(field->type, brackets); | |
1472 | field->name = token; | |
1473 | type = read_token(&token); | |
1474 | } else { | |
d286447f NK |
1475 | char *new_type; |
1476 | new_type = realloc(field->type, | |
1477 | strlen(field->type) + | |
1478 | strlen(brackets) + 1); | |
1479 | if (!new_type) { | |
1480 | free(brackets); | |
1481 | goto fail; | |
1482 | } | |
1483 | field->type = new_type; | |
f7d82350 SR |
1484 | strcat(field->type, brackets); |
1485 | } | |
1486 | free(brackets); | |
1487 | } | |
1488 | ||
1489 | if (field_is_string(field)) | |
1490 | field->flags |= FIELD_IS_STRING; | |
1491 | if (field_is_dynamic(field)) | |
1492 | field->flags |= FIELD_IS_DYNAMIC; | |
1493 | if (field_is_long(field)) | |
1494 | field->flags |= FIELD_IS_LONG; | |
1495 | ||
1496 | if (test_type_token(type, token, EVENT_OP, ";")) | |
1497 | goto fail; | |
1498 | free_token(token); | |
1499 | ||
1500 | if (read_expected(EVENT_ITEM, "offset") < 0) | |
1501 | goto fail_expect; | |
1502 | ||
1503 | if (read_expected(EVENT_OP, ":") < 0) | |
1504 | goto fail_expect; | |
1505 | ||
1506 | if (read_expect_type(EVENT_ITEM, &token)) | |
1507 | goto fail; | |
1508 | field->offset = strtoul(token, NULL, 0); | |
1509 | free_token(token); | |
1510 | ||
1511 | if (read_expected(EVENT_OP, ";") < 0) | |
1512 | goto fail_expect; | |
1513 | ||
1514 | if (read_expected(EVENT_ITEM, "size") < 0) | |
1515 | goto fail_expect; | |
1516 | ||
1517 | if (read_expected(EVENT_OP, ":") < 0) | |
1518 | goto fail_expect; | |
1519 | ||
1520 | if (read_expect_type(EVENT_ITEM, &token)) | |
1521 | goto fail; | |
1522 | field->size = strtoul(token, NULL, 0); | |
1523 | free_token(token); | |
1524 | ||
1525 | if (read_expected(EVENT_OP, ";") < 0) | |
1526 | goto fail_expect; | |
1527 | ||
1528 | type = read_token(&token); | |
1529 | if (type != EVENT_NEWLINE) { | |
1530 | /* newer versions of the kernel have a "signed" type */ | |
1531 | if (test_type_token(type, token, EVENT_ITEM, "signed")) | |
1532 | goto fail; | |
1533 | ||
1534 | free_token(token); | |
1535 | ||
1536 | if (read_expected(EVENT_OP, ":") < 0) | |
1537 | goto fail_expect; | |
1538 | ||
1539 | if (read_expect_type(EVENT_ITEM, &token)) | |
1540 | goto fail; | |
1541 | ||
10ee9fa3 TZ |
1542 | if (strtoul(token, NULL, 0)) |
1543 | field->flags |= FIELD_IS_SIGNED; | |
f7d82350 SR |
1544 | |
1545 | free_token(token); | |
1546 | if (read_expected(EVENT_OP, ";") < 0) | |
1547 | goto fail_expect; | |
1548 | ||
1549 | if (read_expect_type(EVENT_NEWLINE, &token)) | |
1550 | goto fail; | |
1551 | } | |
1552 | ||
1553 | free_token(token); | |
1554 | ||
1555 | if (field->flags & FIELD_IS_ARRAY) { | |
1556 | if (field->arraylen) | |
1557 | field->elementsize = field->size / field->arraylen; | |
e23c1a55 JO |
1558 | else if (field->flags & FIELD_IS_DYNAMIC) |
1559 | field->elementsize = size_dynamic; | |
f7d82350 SR |
1560 | else if (field->flags & FIELD_IS_STRING) |
1561 | field->elementsize = 1; | |
e23c1a55 JO |
1562 | else if (field->flags & FIELD_IS_LONG) |
1563 | field->elementsize = event->pevent ? | |
1564 | event->pevent->long_size : | |
1565 | sizeof(long); | |
f7d82350 SR |
1566 | } else |
1567 | field->elementsize = field->size; | |
1568 | ||
1569 | *fields = field; | |
1570 | fields = &field->next; | |
1571 | ||
1572 | } while (1); | |
1573 | ||
1574 | return 0; | |
1575 | ||
1576 | fail: | |
1577 | free_token(token); | |
1578 | fail_expect: | |
57d34dc5 NK |
1579 | if (field) { |
1580 | free(field->type); | |
1581 | free(field->name); | |
f7d82350 | 1582 | free(field); |
57d34dc5 | 1583 | } |
f7d82350 SR |
1584 | return -1; |
1585 | } | |
1586 | ||
1587 | static int event_read_format(struct event_format *event) | |
1588 | { | |
1589 | char *token; | |
1590 | int ret; | |
1591 | ||
1592 | if (read_expected_item(EVENT_ITEM, "format") < 0) | |
1593 | return -1; | |
1594 | ||
1595 | if (read_expected(EVENT_OP, ":") < 0) | |
1596 | return -1; | |
1597 | ||
1598 | if (read_expect_type(EVENT_NEWLINE, &token)) | |
1599 | goto fail; | |
1600 | free_token(token); | |
1601 | ||
1602 | ret = event_read_fields(event, &event->format.common_fields); | |
1603 | if (ret < 0) | |
1604 | return ret; | |
1605 | event->format.nr_common = ret; | |
1606 | ||
1607 | ret = event_read_fields(event, &event->format.fields); | |
1608 | if (ret < 0) | |
1609 | return ret; | |
1610 | event->format.nr_fields = ret; | |
1611 | ||
1612 | return 0; | |
1613 | ||
1614 | fail: | |
1615 | free_token(token); | |
1616 | return -1; | |
1617 | } | |
1618 | ||
1619 | static enum event_type | |
1620 | process_arg_token(struct event_format *event, struct print_arg *arg, | |
1621 | char **tok, enum event_type type); | |
1622 | ||
1623 | static enum event_type | |
1624 | process_arg(struct event_format *event, struct print_arg *arg, char **tok) | |
1625 | { | |
1626 | enum event_type type; | |
1627 | char *token; | |
1628 | ||
1629 | type = read_token(&token); | |
1630 | *tok = token; | |
1631 | ||
1632 | return process_arg_token(event, arg, tok, type); | |
1633 | } | |
1634 | ||
1635 | static enum event_type | |
1636 | process_op(struct event_format *event, struct print_arg *arg, char **tok); | |
1637 | ||
eff2c92f SR |
1638 | /* |
1639 | * For __print_symbolic() and __print_flags, we need to completely | |
1640 | * evaluate the first argument, which defines what to print next. | |
1641 | */ | |
1642 | static enum event_type | |
1643 | process_field_arg(struct event_format *event, struct print_arg *arg, char **tok) | |
1644 | { | |
1645 | enum event_type type; | |
1646 | ||
1647 | type = process_arg(event, arg, tok); | |
1648 | ||
1649 | while (type == EVENT_OP) { | |
1650 | type = process_op(event, arg, tok); | |
1651 | } | |
1652 | ||
1653 | return type; | |
1654 | } | |
1655 | ||
f7d82350 SR |
1656 | static enum event_type |
1657 | process_cond(struct event_format *event, struct print_arg *top, char **tok) | |
1658 | { | |
1659 | struct print_arg *arg, *left, *right; | |
1660 | enum event_type type; | |
1661 | char *token = NULL; | |
1662 | ||
1663 | arg = alloc_arg(); | |
1664 | left = alloc_arg(); | |
1665 | right = alloc_arg(); | |
1666 | ||
b1ac754b | 1667 | if (!arg || !left || !right) { |
3388cc3e | 1668 | do_warning_event(event, "%s: not enough memory!", __func__); |
b1ac754b NK |
1669 | /* arg will be freed at out_free */ |
1670 | free_arg(left); | |
1671 | free_arg(right); | |
1672 | goto out_free; | |
1673 | } | |
1674 | ||
f7d82350 SR |
1675 | arg->type = PRINT_OP; |
1676 | arg->op.left = left; | |
1677 | arg->op.right = right; | |
1678 | ||
1679 | *tok = NULL; | |
1680 | type = process_arg(event, left, &token); | |
1681 | ||
1682 | again: | |
1683 | /* Handle other operations in the arguments */ | |
1684 | if (type == EVENT_OP && strcmp(token, ":") != 0) { | |
1685 | type = process_op(event, left, &token); | |
1686 | goto again; | |
1687 | } | |
1688 | ||
1689 | if (test_type_token(type, token, EVENT_OP, ":")) | |
1690 | goto out_free; | |
1691 | ||
1692 | arg->op.op = token; | |
1693 | ||
1694 | type = process_arg(event, right, &token); | |
1695 | ||
1696 | top->op.right = arg; | |
1697 | ||
1698 | *tok = token; | |
1699 | return type; | |
1700 | ||
1701 | out_free: | |
1702 | /* Top may point to itself */ | |
1703 | top->op.right = NULL; | |
1704 | free_token(token); | |
1705 | free_arg(arg); | |
1706 | return EVENT_ERROR; | |
1707 | } | |
1708 | ||
1709 | static enum event_type | |
1710 | process_array(struct event_format *event, struct print_arg *top, char **tok) | |
1711 | { | |
1712 | struct print_arg *arg; | |
1713 | enum event_type type; | |
1714 | char *token = NULL; | |
1715 | ||
1716 | arg = alloc_arg(); | |
b1ac754b | 1717 | if (!arg) { |
3388cc3e | 1718 | do_warning_event(event, "%s: not enough memory!", __func__); |
b1ac754b NK |
1719 | /* '*tok' is set to top->op.op. No need to free. */ |
1720 | *tok = NULL; | |
1721 | return EVENT_ERROR; | |
1722 | } | |
f7d82350 SR |
1723 | |
1724 | *tok = NULL; | |
1725 | type = process_arg(event, arg, &token); | |
1726 | if (test_type_token(type, token, EVENT_OP, "]")) | |
1727 | goto out_free; | |
1728 | ||
1729 | top->op.right = arg; | |
1730 | ||
1731 | free_token(token); | |
1732 | type = read_token_item(&token); | |
1733 | *tok = token; | |
1734 | ||
1735 | return type; | |
1736 | ||
1737 | out_free: | |
1bce6e0f | 1738 | free_token(token); |
f7d82350 SR |
1739 | free_arg(arg); |
1740 | return EVENT_ERROR; | |
1741 | } | |
1742 | ||
1743 | static int get_op_prio(char *op) | |
1744 | { | |
1745 | if (!op[1]) { | |
1746 | switch (op[0]) { | |
1747 | case '~': | |
1748 | case '!': | |
1749 | return 4; | |
1750 | case '*': | |
1751 | case '/': | |
1752 | case '%': | |
1753 | return 6; | |
1754 | case '+': | |
1755 | case '-': | |
1756 | return 7; | |
1757 | /* '>>' and '<<' are 8 */ | |
1758 | case '<': | |
1759 | case '>': | |
1760 | return 9; | |
1761 | /* '==' and '!=' are 10 */ | |
1762 | case '&': | |
1763 | return 11; | |
1764 | case '^': | |
1765 | return 12; | |
1766 | case '|': | |
1767 | return 13; | |
1768 | case '?': | |
1769 | return 16; | |
1770 | default: | |
14ffde0e | 1771 | do_warning("unknown op '%c'", op[0]); |
f7d82350 SR |
1772 | return -1; |
1773 | } | |
1774 | } else { | |
1775 | if (strcmp(op, "++") == 0 || | |
1776 | strcmp(op, "--") == 0) { | |
1777 | return 3; | |
1778 | } else if (strcmp(op, ">>") == 0 || | |
1779 | strcmp(op, "<<") == 0) { | |
1780 | return 8; | |
1781 | } else if (strcmp(op, ">=") == 0 || | |
1782 | strcmp(op, "<=") == 0) { | |
1783 | return 9; | |
1784 | } else if (strcmp(op, "==") == 0 || | |
1785 | strcmp(op, "!=") == 0) { | |
1786 | return 10; | |
1787 | } else if (strcmp(op, "&&") == 0) { | |
1788 | return 14; | |
1789 | } else if (strcmp(op, "||") == 0) { | |
1790 | return 15; | |
1791 | } else { | |
14ffde0e | 1792 | do_warning("unknown op '%s'", op); |
f7d82350 SR |
1793 | return -1; |
1794 | } | |
1795 | } | |
1796 | } | |
1797 | ||
14ffde0e | 1798 | static int set_op_prio(struct print_arg *arg) |
f7d82350 SR |
1799 | { |
1800 | ||
1801 | /* single ops are the greatest */ | |
14ffde0e | 1802 | if (!arg->op.left || arg->op.left->type == PRINT_NULL) |
f7d82350 | 1803 | arg->op.prio = 0; |
14ffde0e VN |
1804 | else |
1805 | arg->op.prio = get_op_prio(arg->op.op); | |
f7d82350 | 1806 | |
14ffde0e | 1807 | return arg->op.prio; |
f7d82350 SR |
1808 | } |
1809 | ||
1810 | /* Note, *tok does not get freed, but will most likely be saved */ | |
1811 | static enum event_type | |
1812 | process_op(struct event_format *event, struct print_arg *arg, char **tok) | |
1813 | { | |
1814 | struct print_arg *left, *right = NULL; | |
1815 | enum event_type type; | |
1816 | char *token; | |
1817 | ||
1818 | /* the op is passed in via tok */ | |
1819 | token = *tok; | |
1820 | ||
1821 | if (arg->type == PRINT_OP && !arg->op.left) { | |
1822 | /* handle single op */ | |
1823 | if (token[1]) { | |
3388cc3e | 1824 | do_warning_event(event, "bad op token %s", token); |
f7d82350 SR |
1825 | goto out_free; |
1826 | } | |
1827 | switch (token[0]) { | |
1828 | case '~': | |
1829 | case '!': | |
1830 | case '+': | |
1831 | case '-': | |
1832 | break; | |
1833 | default: | |
3388cc3e | 1834 | do_warning_event(event, "bad op token %s", token); |
f7d82350 SR |
1835 | goto out_free; |
1836 | ||
1837 | } | |
1838 | ||
1839 | /* make an empty left */ | |
1840 | left = alloc_arg(); | |
b1ac754b NK |
1841 | if (!left) |
1842 | goto out_warn_free; | |
1843 | ||
f7d82350 SR |
1844 | left->type = PRINT_NULL; |
1845 | arg->op.left = left; | |
1846 | ||
1847 | right = alloc_arg(); | |
b1ac754b NK |
1848 | if (!right) |
1849 | goto out_warn_free; | |
1850 | ||
f7d82350 SR |
1851 | arg->op.right = right; |
1852 | ||
1853 | /* do not free the token, it belongs to an op */ | |
1854 | *tok = NULL; | |
1855 | type = process_arg(event, right, tok); | |
1856 | ||
1857 | } else if (strcmp(token, "?") == 0) { | |
1858 | ||
1859 | left = alloc_arg(); | |
b1ac754b NK |
1860 | if (!left) |
1861 | goto out_warn_free; | |
1862 | ||
f7d82350 SR |
1863 | /* copy the top arg to the left */ |
1864 | *left = *arg; | |
1865 | ||
1866 | arg->type = PRINT_OP; | |
1867 | arg->op.op = token; | |
1868 | arg->op.left = left; | |
1869 | arg->op.prio = 0; | |
1870 | ||
41e51a28 | 1871 | /* it will set arg->op.right */ |
f7d82350 SR |
1872 | type = process_cond(event, arg, tok); |
1873 | ||
1874 | } else if (strcmp(token, ">>") == 0 || | |
1875 | strcmp(token, "<<") == 0 || | |
1876 | strcmp(token, "&") == 0 || | |
1877 | strcmp(token, "|") == 0 || | |
1878 | strcmp(token, "&&") == 0 || | |
1879 | strcmp(token, "||") == 0 || | |
1880 | strcmp(token, "-") == 0 || | |
1881 | strcmp(token, "+") == 0 || | |
1882 | strcmp(token, "*") == 0 || | |
1883 | strcmp(token, "^") == 0 || | |
1884 | strcmp(token, "/") == 0 || | |
1885 | strcmp(token, "<") == 0 || | |
1886 | strcmp(token, ">") == 0 || | |
ff582680 NK |
1887 | strcmp(token, "<=") == 0 || |
1888 | strcmp(token, ">=") == 0 || | |
f7d82350 SR |
1889 | strcmp(token, "==") == 0 || |
1890 | strcmp(token, "!=") == 0) { | |
1891 | ||
1892 | left = alloc_arg(); | |
b1ac754b NK |
1893 | if (!left) |
1894 | goto out_warn_free; | |
f7d82350 SR |
1895 | |
1896 | /* copy the top arg to the left */ | |
1897 | *left = *arg; | |
1898 | ||
1899 | arg->type = PRINT_OP; | |
1900 | arg->op.op = token; | |
1901 | arg->op.left = left; | |
41e51a28 | 1902 | arg->op.right = NULL; |
f7d82350 | 1903 | |
14ffde0e VN |
1904 | if (set_op_prio(arg) == -1) { |
1905 | event->flags |= EVENT_FL_FAILED; | |
d1de1087 NK |
1906 | /* arg->op.op (= token) will be freed at out_free */ |
1907 | arg->op.op = NULL; | |
14ffde0e VN |
1908 | goto out_free; |
1909 | } | |
f7d82350 SR |
1910 | |
1911 | type = read_token_item(&token); | |
1912 | *tok = token; | |
1913 | ||
1914 | /* could just be a type pointer */ | |
1915 | if ((strcmp(arg->op.op, "*") == 0) && | |
1916 | type == EVENT_DELIM && (strcmp(token, ")") == 0)) { | |
d286447f NK |
1917 | char *new_atom; |
1918 | ||
a6d2a61a | 1919 | if (left->type != PRINT_ATOM) { |
3388cc3e | 1920 | do_warning_event(event, "bad pointer type"); |
a6d2a61a ACM |
1921 | goto out_free; |
1922 | } | |
d286447f | 1923 | new_atom = realloc(left->atom.atom, |
f7d82350 | 1924 | strlen(left->atom.atom) + 3); |
d286447f | 1925 | if (!new_atom) |
b1ac754b | 1926 | goto out_warn_free; |
d286447f NK |
1927 | |
1928 | left->atom.atom = new_atom; | |
f7d82350 SR |
1929 | strcat(left->atom.atom, " *"); |
1930 | free(arg->op.op); | |
1931 | *arg = *left; | |
1932 | free(left); | |
1933 | ||
1934 | return type; | |
1935 | } | |
1936 | ||
1937 | right = alloc_arg(); | |
b1ac754b NK |
1938 | if (!right) |
1939 | goto out_warn_free; | |
1940 | ||
f7d82350 | 1941 | type = process_arg_token(event, right, tok, type); |
3201f0dc NK |
1942 | |
1943 | if (right->type == PRINT_OP && | |
1944 | get_op_prio(arg->op.op) < get_op_prio(right->op.op)) { | |
1945 | struct print_arg tmp; | |
1946 | ||
1947 | /* rotate ops according to the priority */ | |
1948 | arg->op.right = right->op.left; | |
1949 | ||
1950 | tmp = *arg; | |
1951 | *arg = *right; | |
1952 | *right = tmp; | |
1953 | ||
1954 | arg->op.left = right; | |
1955 | } else { | |
1956 | arg->op.right = right; | |
1957 | } | |
f7d82350 SR |
1958 | |
1959 | } else if (strcmp(token, "[") == 0) { | |
1960 | ||
1961 | left = alloc_arg(); | |
b1ac754b NK |
1962 | if (!left) |
1963 | goto out_warn_free; | |
1964 | ||
f7d82350 SR |
1965 | *left = *arg; |
1966 | ||
1967 | arg->type = PRINT_OP; | |
1968 | arg->op.op = token; | |
1969 | arg->op.left = left; | |
1970 | ||
1971 | arg->op.prio = 0; | |
1972 | ||
41e51a28 | 1973 | /* it will set arg->op.right */ |
f7d82350 SR |
1974 | type = process_array(event, arg, tok); |
1975 | ||
1976 | } else { | |
3388cc3e | 1977 | do_warning_event(event, "unknown op '%s'", token); |
f7d82350 SR |
1978 | event->flags |= EVENT_FL_FAILED; |
1979 | /* the arg is now the left side */ | |
1980 | goto out_free; | |
1981 | } | |
1982 | ||
1983 | if (type == EVENT_OP && strcmp(*tok, ":") != 0) { | |
1984 | int prio; | |
1985 | ||
1986 | /* higher prios need to be closer to the root */ | |
1987 | prio = get_op_prio(*tok); | |
1988 | ||
1989 | if (prio > arg->op.prio) | |
1990 | return process_op(event, arg, tok); | |
1991 | ||
1992 | return process_op(event, right, tok); | |
1993 | } | |
1994 | ||
1995 | return type; | |
1996 | ||
b1ac754b | 1997 | out_warn_free: |
3388cc3e | 1998 | do_warning_event(event, "%s: not enough memory!", __func__); |
b1ac754b | 1999 | out_free: |
f7d82350 SR |
2000 | free_token(token); |
2001 | *tok = NULL; | |
2002 | return EVENT_ERROR; | |
2003 | } | |
2004 | ||
2005 | static enum event_type | |
1d037ca1 | 2006 | process_entry(struct event_format *event __maybe_unused, struct print_arg *arg, |
f7d82350 SR |
2007 | char **tok) |
2008 | { | |
2009 | enum event_type type; | |
2010 | char *field; | |
2011 | char *token; | |
2012 | ||
2013 | if (read_expected(EVENT_OP, "->") < 0) | |
2014 | goto out_err; | |
2015 | ||
2016 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
2017 | goto out_free; | |
2018 | field = token; | |
2019 | ||
2020 | arg->type = PRINT_FIELD; | |
2021 | arg->field.name = field; | |
2022 | ||
5205aec9 TZ |
2023 | if (is_flag_field) { |
2024 | arg->field.field = pevent_find_any_field(event, arg->field.name); | |
2025 | arg->field.field->flags |= FIELD_IS_FLAG; | |
2026 | is_flag_field = 0; | |
2027 | } else if (is_symbolic_field) { | |
2028 | arg->field.field = pevent_find_any_field(event, arg->field.name); | |
2029 | arg->field.field->flags |= FIELD_IS_SYMBOLIC; | |
2030 | is_symbolic_field = 0; | |
2031 | } | |
2032 | ||
f7d82350 SR |
2033 | type = read_token(&token); |
2034 | *tok = token; | |
2035 | ||
2036 | return type; | |
2037 | ||
2038 | out_free: | |
2039 | free_token(token); | |
2040 | out_err: | |
2041 | *tok = NULL; | |
2042 | return EVENT_ERROR; | |
2043 | } | |
2044 | ||
929a6bb7 JM |
2045 | static int alloc_and_process_delim(struct event_format *event, char *next_token, |
2046 | struct print_arg **print_arg) | |
2047 | { | |
2048 | struct print_arg *field; | |
2049 | enum event_type type; | |
2050 | char *token; | |
2051 | int ret = 0; | |
2052 | ||
2053 | field = alloc_arg(); | |
2054 | if (!field) { | |
2055 | do_warning_event(event, "%s: not enough memory!", __func__); | |
2056 | errno = ENOMEM; | |
2057 | return -1; | |
2058 | } | |
2059 | ||
2060 | type = process_arg(event, field, &token); | |
2061 | ||
2062 | if (test_type_token(type, token, EVENT_DELIM, next_token)) { | |
2063 | errno = EINVAL; | |
2064 | ret = -1; | |
2065 | free_arg(field); | |
2066 | goto out_free_token; | |
2067 | } | |
2068 | ||
2069 | *print_arg = field; | |
2070 | ||
2071 | out_free_token: | |
2072 | free_token(token); | |
2073 | ||
2074 | return ret; | |
2075 | } | |
2076 | ||
f7d82350 SR |
2077 | static char *arg_eval (struct print_arg *arg); |
2078 | ||
2079 | static unsigned long long | |
2080 | eval_type_str(unsigned long long val, const char *type, int pointer) | |
2081 | { | |
2082 | int sign = 0; | |
2083 | char *ref; | |
2084 | int len; | |
2085 | ||
2086 | len = strlen(type); | |
2087 | ||
2088 | if (pointer) { | |
2089 | ||
2090 | if (type[len-1] != '*') { | |
2091 | do_warning("pointer expected with non pointer type"); | |
2092 | return val; | |
2093 | } | |
2094 | ||
a6d2a61a ACM |
2095 | ref = malloc(len); |
2096 | if (!ref) { | |
2097 | do_warning("%s: not enough memory!", __func__); | |
2098 | return val; | |
2099 | } | |
f7d82350 SR |
2100 | memcpy(ref, type, len); |
2101 | ||
2102 | /* chop off the " *" */ | |
2103 | ref[len - 2] = 0; | |
2104 | ||
2105 | val = eval_type_str(val, ref, 0); | |
2106 | free(ref); | |
2107 | return val; | |
2108 | } | |
2109 | ||
2110 | /* check if this is a pointer */ | |
2111 | if (type[len - 1] == '*') | |
2112 | return val; | |
2113 | ||
2114 | /* Try to figure out the arg size*/ | |
2115 | if (strncmp(type, "struct", 6) == 0) | |
2116 | /* all bets off */ | |
2117 | return val; | |
2118 | ||
2119 | if (strcmp(type, "u8") == 0) | |
2120 | return val & 0xff; | |
2121 | ||
2122 | if (strcmp(type, "u16") == 0) | |
2123 | return val & 0xffff; | |
2124 | ||
2125 | if (strcmp(type, "u32") == 0) | |
2126 | return val & 0xffffffff; | |
2127 | ||
2128 | if (strcmp(type, "u64") == 0 || | |
2129 | strcmp(type, "s64")) | |
2130 | return val; | |
2131 | ||
2132 | if (strcmp(type, "s8") == 0) | |
2133 | return (unsigned long long)(char)val & 0xff; | |
2134 | ||
2135 | if (strcmp(type, "s16") == 0) | |
2136 | return (unsigned long long)(short)val & 0xffff; | |
2137 | ||
2138 | if (strcmp(type, "s32") == 0) | |
2139 | return (unsigned long long)(int)val & 0xffffffff; | |
2140 | ||
2141 | if (strncmp(type, "unsigned ", 9) == 0) { | |
2142 | sign = 0; | |
2143 | type += 9; | |
2144 | } | |
2145 | ||
2146 | if (strcmp(type, "char") == 0) { | |
2147 | if (sign) | |
2148 | return (unsigned long long)(char)val & 0xff; | |
2149 | else | |
2150 | return val & 0xff; | |
2151 | } | |
2152 | ||
2153 | if (strcmp(type, "short") == 0) { | |
2154 | if (sign) | |
2155 | return (unsigned long long)(short)val & 0xffff; | |
2156 | else | |
2157 | return val & 0xffff; | |
2158 | } | |
2159 | ||
2160 | if (strcmp(type, "int") == 0) { | |
2161 | if (sign) | |
2162 | return (unsigned long long)(int)val & 0xffffffff; | |
2163 | else | |
2164 | return val & 0xffffffff; | |
2165 | } | |
2166 | ||
2167 | return val; | |
2168 | } | |
2169 | ||
2170 | /* | |
2171 | * Try to figure out the type. | |
2172 | */ | |
2173 | static unsigned long long | |
2174 | eval_type(unsigned long long val, struct print_arg *arg, int pointer) | |
2175 | { | |
a6d2a61a ACM |
2176 | if (arg->type != PRINT_TYPE) { |
2177 | do_warning("expected type argument"); | |
2178 | return 0; | |
2179 | } | |
f7d82350 SR |
2180 | |
2181 | return eval_type_str(val, arg->typecast.type, pointer); | |
2182 | } | |
2183 | ||
d69afed5 | 2184 | static int arg_num_eval(struct print_arg *arg, long long *val) |
f7d82350 SR |
2185 | { |
2186 | long long left, right; | |
d69afed5 | 2187 | int ret = 1; |
f7d82350 SR |
2188 | |
2189 | switch (arg->type) { | |
2190 | case PRINT_ATOM: | |
d69afed5 | 2191 | *val = strtoll(arg->atom.atom, NULL, 0); |
f7d82350 SR |
2192 | break; |
2193 | case PRINT_TYPE: | |
d69afed5 VN |
2194 | ret = arg_num_eval(arg->typecast.item, val); |
2195 | if (!ret) | |
2196 | break; | |
2197 | *val = eval_type(*val, arg, 0); | |
f7d82350 SR |
2198 | break; |
2199 | case PRINT_OP: | |
2200 | switch (arg->op.op[0]) { | |
2201 | case '|': | |
d69afed5 VN |
2202 | ret = arg_num_eval(arg->op.left, &left); |
2203 | if (!ret) | |
2204 | break; | |
2205 | ret = arg_num_eval(arg->op.right, &right); | |
2206 | if (!ret) | |
2207 | break; | |
f7d82350 | 2208 | if (arg->op.op[1]) |
d69afed5 | 2209 | *val = left || right; |
f7d82350 | 2210 | else |
d69afed5 | 2211 | *val = left | right; |
f7d82350 SR |
2212 | break; |
2213 | case '&': | |
d69afed5 VN |
2214 | ret = arg_num_eval(arg->op.left, &left); |
2215 | if (!ret) | |
2216 | break; | |
2217 | ret = arg_num_eval(arg->op.right, &right); | |
2218 | if (!ret) | |
2219 | break; | |
f7d82350 | 2220 | if (arg->op.op[1]) |
d69afed5 | 2221 | *val = left && right; |
f7d82350 | 2222 | else |
d69afed5 | 2223 | *val = left & right; |
f7d82350 SR |
2224 | break; |
2225 | case '<': | |
d69afed5 VN |
2226 | ret = arg_num_eval(arg->op.left, &left); |
2227 | if (!ret) | |
2228 | break; | |
2229 | ret = arg_num_eval(arg->op.right, &right); | |
2230 | if (!ret) | |
2231 | break; | |
f7d82350 SR |
2232 | switch (arg->op.op[1]) { |
2233 | case 0: | |
d69afed5 | 2234 | *val = left < right; |
f7d82350 SR |
2235 | break; |
2236 | case '<': | |
d69afed5 | 2237 | *val = left << right; |
f7d82350 SR |
2238 | break; |
2239 | case '=': | |
d69afed5 | 2240 | *val = left <= right; |
f7d82350 SR |
2241 | break; |
2242 | default: | |
d69afed5 VN |
2243 | do_warning("unknown op '%s'", arg->op.op); |
2244 | ret = 0; | |
f7d82350 SR |
2245 | } |
2246 | break; | |
2247 | case '>': | |
d69afed5 VN |
2248 | ret = arg_num_eval(arg->op.left, &left); |
2249 | if (!ret) | |
2250 | break; | |
2251 | ret = arg_num_eval(arg->op.right, &right); | |
2252 | if (!ret) | |
2253 | break; | |
f7d82350 SR |
2254 | switch (arg->op.op[1]) { |
2255 | case 0: | |
d69afed5 | 2256 | *val = left > right; |
f7d82350 SR |
2257 | break; |
2258 | case '>': | |
d69afed5 | 2259 | *val = left >> right; |
f7d82350 SR |
2260 | break; |
2261 | case '=': | |
d69afed5 | 2262 | *val = left >= right; |
f7d82350 SR |
2263 | break; |
2264 | default: | |
d69afed5 VN |
2265 | do_warning("unknown op '%s'", arg->op.op); |
2266 | ret = 0; | |
f7d82350 SR |
2267 | } |
2268 | break; | |
2269 | case '=': | |
d69afed5 VN |
2270 | ret = arg_num_eval(arg->op.left, &left); |
2271 | if (!ret) | |
2272 | break; | |
2273 | ret = arg_num_eval(arg->op.right, &right); | |
2274 | if (!ret) | |
2275 | break; | |
f7d82350 | 2276 | |
d69afed5 VN |
2277 | if (arg->op.op[1] != '=') { |
2278 | do_warning("unknown op '%s'", arg->op.op); | |
2279 | ret = 0; | |
2280 | } else | |
2281 | *val = left == right; | |
f7d82350 SR |
2282 | break; |
2283 | case '!': | |
d69afed5 VN |
2284 | ret = arg_num_eval(arg->op.left, &left); |
2285 | if (!ret) | |
2286 | break; | |
2287 | ret = arg_num_eval(arg->op.right, &right); | |
2288 | if (!ret) | |
2289 | break; | |
f7d82350 SR |
2290 | |
2291 | switch (arg->op.op[1]) { | |
2292 | case '=': | |
d69afed5 | 2293 | *val = left != right; |
f7d82350 SR |
2294 | break; |
2295 | default: | |
d69afed5 VN |
2296 | do_warning("unknown op '%s'", arg->op.op); |
2297 | ret = 0; | |
f7d82350 SR |
2298 | } |
2299 | break; | |
2300 | case '-': | |
2301 | /* check for negative */ | |
2302 | if (arg->op.left->type == PRINT_NULL) | |
2303 | left = 0; | |
2304 | else | |
d69afed5 VN |
2305 | ret = arg_num_eval(arg->op.left, &left); |
2306 | if (!ret) | |
2307 | break; | |
2308 | ret = arg_num_eval(arg->op.right, &right); | |
2309 | if (!ret) | |
2310 | break; | |
2311 | *val = left - right; | |
f7d82350 | 2312 | break; |
b4828598 VN |
2313 | case '+': |
2314 | if (arg->op.left->type == PRINT_NULL) | |
2315 | left = 0; | |
2316 | else | |
2317 | ret = arg_num_eval(arg->op.left, &left); | |
2318 | if (!ret) | |
2319 | break; | |
2320 | ret = arg_num_eval(arg->op.right, &right); | |
2321 | if (!ret) | |
2322 | break; | |
2323 | *val = left + right; | |
2324 | break; | |
f7d82350 | 2325 | default: |
d69afed5 VN |
2326 | do_warning("unknown op '%s'", arg->op.op); |
2327 | ret = 0; | |
f7d82350 SR |
2328 | } |
2329 | break; | |
2330 | ||
2331 | case PRINT_NULL: | |
2332 | case PRINT_FIELD ... PRINT_SYMBOL: | |
2333 | case PRINT_STRING: | |
2334 | case PRINT_BSTRING: | |
473a778a | 2335 | case PRINT_BITMASK: |
f7d82350 | 2336 | default: |
d69afed5 VN |
2337 | do_warning("invalid eval type %d", arg->type); |
2338 | ret = 0; | |
f7d82350 SR |
2339 | |
2340 | } | |
d69afed5 | 2341 | return ret; |
f7d82350 SR |
2342 | } |
2343 | ||
2344 | static char *arg_eval (struct print_arg *arg) | |
2345 | { | |
2346 | long long val; | |
2347 | static char buf[20]; | |
2348 | ||
2349 | switch (arg->type) { | |
2350 | case PRINT_ATOM: | |
2351 | return arg->atom.atom; | |
2352 | case PRINT_TYPE: | |
2353 | return arg_eval(arg->typecast.item); | |
2354 | case PRINT_OP: | |
d69afed5 VN |
2355 | if (!arg_num_eval(arg, &val)) |
2356 | break; | |
f7d82350 SR |
2357 | sprintf(buf, "%lld", val); |
2358 | return buf; | |
2359 | ||
2360 | case PRINT_NULL: | |
2361 | case PRINT_FIELD ... PRINT_SYMBOL: | |
2362 | case PRINT_STRING: | |
2363 | case PRINT_BSTRING: | |
473a778a | 2364 | case PRINT_BITMASK: |
f7d82350 | 2365 | default: |
a6d2a61a | 2366 | do_warning("invalid eval type %d", arg->type); |
f7d82350 SR |
2367 | break; |
2368 | } | |
2369 | ||
2370 | return NULL; | |
2371 | } | |
2372 | ||
2373 | static enum event_type | |
2374 | process_fields(struct event_format *event, struct print_flag_sym **list, char **tok) | |
2375 | { | |
2376 | enum event_type type; | |
2377 | struct print_arg *arg = NULL; | |
2378 | struct print_flag_sym *field; | |
2379 | char *token = *tok; | |
2380 | char *value; | |
2381 | ||
2382 | do { | |
2383 | free_token(token); | |
2384 | type = read_token_item(&token); | |
2385 | if (test_type_token(type, token, EVENT_OP, "{")) | |
2386 | break; | |
2387 | ||
2388 | arg = alloc_arg(); | |
b1ac754b NK |
2389 | if (!arg) |
2390 | goto out_free; | |
f7d82350 SR |
2391 | |
2392 | free_token(token); | |
2393 | type = process_arg(event, arg, &token); | |
00b9da72 SH |
2394 | |
2395 | if (type == EVENT_OP) | |
2396 | type = process_op(event, arg, &token); | |
2397 | ||
2398 | if (type == EVENT_ERROR) | |
2399 | goto out_free; | |
2400 | ||
f7d82350 SR |
2401 | if (test_type_token(type, token, EVENT_DELIM, ",")) |
2402 | goto out_free; | |
2403 | ||
87162d81 ACM |
2404 | field = calloc(1, sizeof(*field)); |
2405 | if (!field) | |
2406 | goto out_free; | |
f7d82350 SR |
2407 | |
2408 | value = arg_eval(arg); | |
d69afed5 | 2409 | if (value == NULL) |
f8c49d26 | 2410 | goto out_free_field; |
f7d82350 | 2411 | field->value = strdup(value); |
ca63858e | 2412 | if (field->value == NULL) |
f8c49d26 | 2413 | goto out_free_field; |
f7d82350 SR |
2414 | |
2415 | free_arg(arg); | |
2416 | arg = alloc_arg(); | |
b1ac754b NK |
2417 | if (!arg) |
2418 | goto out_free; | |
f7d82350 SR |
2419 | |
2420 | free_token(token); | |
2421 | type = process_arg(event, arg, &token); | |
2422 | if (test_type_token(type, token, EVENT_OP, "}")) | |
f8c49d26 | 2423 | goto out_free_field; |
f7d82350 SR |
2424 | |
2425 | value = arg_eval(arg); | |
d69afed5 | 2426 | if (value == NULL) |
f8c49d26 | 2427 | goto out_free_field; |
f7d82350 | 2428 | field->str = strdup(value); |
ca63858e | 2429 | if (field->str == NULL) |
f8c49d26 | 2430 | goto out_free_field; |
f7d82350 SR |
2431 | free_arg(arg); |
2432 | arg = NULL; | |
2433 | ||
2434 | *list = field; | |
2435 | list = &field->next; | |
2436 | ||
2437 | free_token(token); | |
2438 | type = read_token_item(&token); | |
2439 | } while (type == EVENT_DELIM && strcmp(token, ",") == 0); | |
2440 | ||
2441 | *tok = token; | |
2442 | return type; | |
2443 | ||
f8c49d26 NK |
2444 | out_free_field: |
2445 | free_flag_sym(field); | |
f7d82350 SR |
2446 | out_free: |
2447 | free_arg(arg); | |
2448 | free_token(token); | |
2449 | *tok = NULL; | |
2450 | ||
2451 | return EVENT_ERROR; | |
2452 | } | |
2453 | ||
2454 | static enum event_type | |
2455 | process_flags(struct event_format *event, struct print_arg *arg, char **tok) | |
2456 | { | |
2457 | struct print_arg *field; | |
2458 | enum event_type type; | |
21da83fb | 2459 | char *token = NULL; |
f7d82350 SR |
2460 | |
2461 | memset(arg, 0, sizeof(*arg)); | |
2462 | arg->type = PRINT_FLAGS; | |
2463 | ||
2464 | field = alloc_arg(); | |
b1ac754b | 2465 | if (!field) { |
3388cc3e | 2466 | do_warning_event(event, "%s: not enough memory!", __func__); |
b1ac754b NK |
2467 | goto out_free; |
2468 | } | |
f7d82350 | 2469 | |
eff2c92f | 2470 | type = process_field_arg(event, field, &token); |
f7d82350 SR |
2471 | |
2472 | /* Handle operations in the first argument */ | |
2473 | while (type == EVENT_OP) | |
2474 | type = process_op(event, field, &token); | |
2475 | ||
2476 | if (test_type_token(type, token, EVENT_DELIM, ",")) | |
70d93044 | 2477 | goto out_free_field; |
f7d82350 SR |
2478 | free_token(token); |
2479 | ||
2480 | arg->flags.field = field; | |
2481 | ||
2482 | type = read_token_item(&token); | |
2483 | if (event_item_type(type)) { | |
2484 | arg->flags.delim = token; | |
2485 | type = read_token_item(&token); | |
2486 | } | |
2487 | ||
2488 | if (test_type_token(type, token, EVENT_DELIM, ",")) | |
2489 | goto out_free; | |
2490 | ||
2491 | type = process_fields(event, &arg->flags.flags, &token); | |
2492 | if (test_type_token(type, token, EVENT_DELIM, ")")) | |
2493 | goto out_free; | |
2494 | ||
2495 | free_token(token); | |
2496 | type = read_token_item(tok); | |
2497 | return type; | |
2498 | ||
70d93044 NK |
2499 | out_free_field: |
2500 | free_arg(field); | |
2501 | out_free: | |
f7d82350 SR |
2502 | free_token(token); |
2503 | *tok = NULL; | |
2504 | return EVENT_ERROR; | |
2505 | } | |
2506 | ||
2507 | static enum event_type | |
2508 | process_symbols(struct event_format *event, struct print_arg *arg, char **tok) | |
2509 | { | |
2510 | struct print_arg *field; | |
2511 | enum event_type type; | |
21da83fb | 2512 | char *token = NULL; |
f7d82350 SR |
2513 | |
2514 | memset(arg, 0, sizeof(*arg)); | |
2515 | arg->type = PRINT_SYMBOL; | |
2516 | ||
2517 | field = alloc_arg(); | |
b1ac754b | 2518 | if (!field) { |
3388cc3e | 2519 | do_warning_event(event, "%s: not enough memory!", __func__); |
b1ac754b NK |
2520 | goto out_free; |
2521 | } | |
f7d82350 | 2522 | |
eff2c92f SR |
2523 | type = process_field_arg(event, field, &token); |
2524 | ||
f7d82350 | 2525 | if (test_type_token(type, token, EVENT_DELIM, ",")) |
70d93044 | 2526 | goto out_free_field; |
f7d82350 SR |
2527 | |
2528 | arg->symbol.field = field; | |
2529 | ||
2530 | type = process_fields(event, &arg->symbol.symbols, &token); | |
2531 | if (test_type_token(type, token, EVENT_DELIM, ")")) | |
2532 | goto out_free; | |
2533 | ||
2534 | free_token(token); | |
2535 | type = read_token_item(tok); | |
2536 | return type; | |
2537 | ||
70d93044 NK |
2538 | out_free_field: |
2539 | free_arg(field); | |
2540 | out_free: | |
f7d82350 SR |
2541 | free_token(token); |
2542 | *tok = NULL; | |
2543 | return EVENT_ERROR; | |
2544 | } | |
2545 | ||
e080e6f1 NK |
2546 | static enum event_type |
2547 | process_hex(struct event_format *event, struct print_arg *arg, char **tok) | |
2548 | { | |
e080e6f1 NK |
2549 | memset(arg, 0, sizeof(*arg)); |
2550 | arg->type = PRINT_HEX; | |
2551 | ||
929a6bb7 JM |
2552 | if (alloc_and_process_delim(event, ",", &arg->hex.field)) |
2553 | goto out; | |
b1ac754b | 2554 | |
929a6bb7 JM |
2555 | if (alloc_and_process_delim(event, ")", &arg->hex.size)) |
2556 | goto free_field; | |
e080e6f1 | 2557 | |
929a6bb7 | 2558 | return read_token_item(tok); |
e080e6f1 | 2559 | |
929a6bb7 JM |
2560 | free_field: |
2561 | free_arg(arg->hex.field); | |
2562 | out: | |
e080e6f1 NK |
2563 | *tok = NULL; |
2564 | return EVENT_ERROR; | |
2565 | } | |
e080e6f1 | 2566 | |
b839e1e8 JM |
2567 | static enum event_type |
2568 | process_int_array(struct event_format *event, struct print_arg *arg, char **tok) | |
2569 | { | |
2570 | memset(arg, 0, sizeof(*arg)); | |
2571 | arg->type = PRINT_INT_ARRAY; | |
b1ac754b | 2572 | |
b839e1e8 JM |
2573 | if (alloc_and_process_delim(event, ",", &arg->int_array.field)) |
2574 | goto out; | |
e080e6f1 | 2575 | |
b839e1e8 JM |
2576 | if (alloc_and_process_delim(event, ",", &arg->int_array.count)) |
2577 | goto free_field; | |
e080e6f1 | 2578 | |
b839e1e8 JM |
2579 | if (alloc_and_process_delim(event, ")", &arg->int_array.el_size)) |
2580 | goto free_size; | |
e080e6f1 | 2581 | |
b839e1e8 | 2582 | return read_token_item(tok); |
e080e6f1 | 2583 | |
b839e1e8 JM |
2584 | free_size: |
2585 | free_arg(arg->int_array.count); | |
2586 | free_field: | |
2587 | free_arg(arg->int_array.field); | |
2588 | out: | |
e080e6f1 NK |
2589 | *tok = NULL; |
2590 | return EVENT_ERROR; | |
2591 | } | |
2592 | ||
f7d82350 SR |
2593 | static enum event_type |
2594 | process_dynamic_array(struct event_format *event, struct print_arg *arg, char **tok) | |
2595 | { | |
2596 | struct format_field *field; | |
2597 | enum event_type type; | |
2598 | char *token; | |
2599 | ||
2600 | memset(arg, 0, sizeof(*arg)); | |
2601 | arg->type = PRINT_DYNAMIC_ARRAY; | |
2602 | ||
2603 | /* | |
2604 | * The item within the parenthesis is another field that holds | |
2605 | * the index into where the array starts. | |
2606 | */ | |
2607 | type = read_token(&token); | |
2608 | *tok = token; | |
2609 | if (type != EVENT_ITEM) | |
2610 | goto out_free; | |
2611 | ||
2612 | /* Find the field */ | |
2613 | ||
2614 | field = pevent_find_field(event, token); | |
2615 | if (!field) | |
2616 | goto out_free; | |
2617 | ||
2618 | arg->dynarray.field = field; | |
2619 | arg->dynarray.index = 0; | |
2620 | ||
2621 | if (read_expected(EVENT_DELIM, ")") < 0) | |
2622 | goto out_free; | |
2623 | ||
2624 | free_token(token); | |
2625 | type = read_token_item(&token); | |
2626 | *tok = token; | |
2627 | if (type != EVENT_OP || strcmp(token, "[") != 0) | |
2628 | return type; | |
2629 | ||
2630 | free_token(token); | |
2631 | arg = alloc_arg(); | |
fba7a782 | 2632 | if (!arg) { |
3388cc3e | 2633 | do_warning_event(event, "%s: not enough memory!", __func__); |
b1ac754b NK |
2634 | *tok = NULL; |
2635 | return EVENT_ERROR; | |
2636 | } | |
2637 | ||
f7d82350 SR |
2638 | type = process_arg(event, arg, &token); |
2639 | if (type == EVENT_ERROR) | |
b3511d05 | 2640 | goto out_free_arg; |
f7d82350 SR |
2641 | |
2642 | if (!test_type_token(type, token, EVENT_OP, "]")) | |
b3511d05 | 2643 | goto out_free_arg; |
f7d82350 SR |
2644 | |
2645 | free_token(token); | |
2646 | type = read_token_item(tok); | |
2647 | return type; | |
2648 | ||
b3511d05 NK |
2649 | out_free_arg: |
2650 | free_arg(arg); | |
f7d82350 | 2651 | out_free: |
f7d82350 SR |
2652 | free_token(token); |
2653 | *tok = NULL; | |
2654 | return EVENT_ERROR; | |
2655 | } | |
2656 | ||
2657 | static enum event_type | |
2658 | process_paren(struct event_format *event, struct print_arg *arg, char **tok) | |
2659 | { | |
2660 | struct print_arg *item_arg; | |
2661 | enum event_type type; | |
2662 | char *token; | |
2663 | ||
2664 | type = process_arg(event, arg, &token); | |
2665 | ||
2666 | if (type == EVENT_ERROR) | |
2667 | goto out_free; | |
2668 | ||
2669 | if (type == EVENT_OP) | |
2670 | type = process_op(event, arg, &token); | |
2671 | ||
2672 | if (type == EVENT_ERROR) | |
2673 | goto out_free; | |
2674 | ||
2675 | if (test_type_token(type, token, EVENT_DELIM, ")")) | |
2676 | goto out_free; | |
2677 | ||
2678 | free_token(token); | |
2679 | type = read_token_item(&token); | |
2680 | ||
2681 | /* | |
2682 | * If the next token is an item or another open paren, then | |
2683 | * this was a typecast. | |
2684 | */ | |
2685 | if (event_item_type(type) || | |
2686 | (type == EVENT_DELIM && strcmp(token, "(") == 0)) { | |
2687 | ||
2688 | /* make this a typecast and contine */ | |
2689 | ||
2690 | /* prevous must be an atom */ | |
a6d2a61a | 2691 | if (arg->type != PRINT_ATOM) { |
3388cc3e | 2692 | do_warning_event(event, "previous needed to be PRINT_ATOM"); |
a6d2a61a ACM |
2693 | goto out_free; |
2694 | } | |
f7d82350 SR |
2695 | |
2696 | item_arg = alloc_arg(); | |
b1ac754b | 2697 | if (!item_arg) { |
3388cc3e NK |
2698 | do_warning_event(event, "%s: not enough memory!", |
2699 | __func__); | |
b1ac754b NK |
2700 | goto out_free; |
2701 | } | |
f7d82350 SR |
2702 | |
2703 | arg->type = PRINT_TYPE; | |
2704 | arg->typecast.type = arg->atom.atom; | |
2705 | arg->typecast.item = item_arg; | |
2706 | type = process_arg_token(event, item_arg, &token, type); | |
2707 | ||
2708 | } | |
2709 | ||
2710 | *tok = token; | |
2711 | return type; | |
2712 | ||
2713 | out_free: | |
2714 | free_token(token); | |
2715 | *tok = NULL; | |
2716 | return EVENT_ERROR; | |
2717 | } | |
2718 | ||
2719 | ||
2720 | static enum event_type | |
1d037ca1 IT |
2721 | process_str(struct event_format *event __maybe_unused, struct print_arg *arg, |
2722 | char **tok) | |
f7d82350 SR |
2723 | { |
2724 | enum event_type type; | |
2725 | char *token; | |
2726 | ||
2727 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
2728 | goto out_free; | |
2729 | ||
2730 | arg->type = PRINT_STRING; | |
2731 | arg->string.string = token; | |
2732 | arg->string.offset = -1; | |
2733 | ||
2734 | if (read_expected(EVENT_DELIM, ")") < 0) | |
2735 | goto out_err; | |
2736 | ||
2737 | type = read_token(&token); | |
2738 | *tok = token; | |
2739 | ||
2740 | return type; | |
2741 | ||
2742 | out_free: | |
2743 | free_token(token); | |
2744 | out_err: | |
2745 | *tok = NULL; | |
2746 | return EVENT_ERROR; | |
2747 | } | |
2748 | ||
473a778a SRRH |
2749 | static enum event_type |
2750 | process_bitmask(struct event_format *event __maybe_unused, struct print_arg *arg, | |
2751 | char **tok) | |
2752 | { | |
2753 | enum event_type type; | |
2754 | char *token; | |
2755 | ||
2756 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
2757 | goto out_free; | |
2758 | ||
2759 | arg->type = PRINT_BITMASK; | |
2760 | arg->bitmask.bitmask = token; | |
2761 | arg->bitmask.offset = -1; | |
2762 | ||
2763 | if (read_expected(EVENT_DELIM, ")") < 0) | |
2764 | goto out_err; | |
2765 | ||
2766 | type = read_token(&token); | |
2767 | *tok = token; | |
2768 | ||
2769 | return type; | |
2770 | ||
2771 | out_free: | |
2772 | free_token(token); | |
2773 | out_err: | |
2774 | *tok = NULL; | |
2775 | return EVENT_ERROR; | |
2776 | } | |
2777 | ||
f7d82350 SR |
2778 | static struct pevent_function_handler * |
2779 | find_func_handler(struct pevent *pevent, char *func_name) | |
2780 | { | |
2781 | struct pevent_function_handler *func; | |
2782 | ||
101782ea SR |
2783 | if (!pevent) |
2784 | return NULL; | |
2785 | ||
f7d82350 SR |
2786 | for (func = pevent->func_handlers; func; func = func->next) { |
2787 | if (strcmp(func->name, func_name) == 0) | |
2788 | break; | |
2789 | } | |
2790 | ||
2791 | return func; | |
2792 | } | |
2793 | ||
2794 | static void remove_func_handler(struct pevent *pevent, char *func_name) | |
2795 | { | |
2796 | struct pevent_function_handler *func; | |
2797 | struct pevent_function_handler **next; | |
2798 | ||
2799 | next = &pevent->func_handlers; | |
2800 | while ((func = *next)) { | |
2801 | if (strcmp(func->name, func_name) == 0) { | |
2802 | *next = func->next; | |
2803 | free_func_handle(func); | |
2804 | break; | |
2805 | } | |
2806 | next = &func->next; | |
2807 | } | |
2808 | } | |
2809 | ||
2810 | static enum event_type | |
2811 | process_func_handler(struct event_format *event, struct pevent_function_handler *func, | |
2812 | struct print_arg *arg, char **tok) | |
2813 | { | |
2814 | struct print_arg **next_arg; | |
2815 | struct print_arg *farg; | |
2816 | enum event_type type; | |
2817 | char *token; | |
f7d82350 SR |
2818 | int i; |
2819 | ||
2820 | arg->type = PRINT_FUNC; | |
2821 | arg->func.func = func; | |
2822 | ||
2823 | *tok = NULL; | |
2824 | ||
2825 | next_arg = &(arg->func.args); | |
2826 | for (i = 0; i < func->nr_args; i++) { | |
2827 | farg = alloc_arg(); | |
b1ac754b | 2828 | if (!farg) { |
3388cc3e NK |
2829 | do_warning_event(event, "%s: not enough memory!", |
2830 | __func__); | |
b1ac754b NK |
2831 | return EVENT_ERROR; |
2832 | } | |
2833 | ||
f7d82350 | 2834 | type = process_arg(event, farg, &token); |
3a3ffa2e SR |
2835 | if (i < (func->nr_args - 1)) { |
2836 | if (type != EVENT_DELIM || strcmp(token, ",") != 0) { | |
9e9e5dfd NK |
2837 | do_warning_event(event, |
2838 | "Error: function '%s()' expects %d arguments but event %s only uses %d", | |
3a3ffa2e SR |
2839 | func->name, func->nr_args, |
2840 | event->name, i + 1); | |
2841 | goto err; | |
2842 | } | |
2843 | } else { | |
2844 | if (type != EVENT_DELIM || strcmp(token, ")") != 0) { | |
9e9e5dfd NK |
2845 | do_warning_event(event, |
2846 | "Error: function '%s()' only expects %d arguments but event %s has more", | |
3a3ffa2e SR |
2847 | func->name, func->nr_args, event->name); |
2848 | goto err; | |
2849 | } | |
f7d82350 SR |
2850 | } |
2851 | ||
2852 | *next_arg = farg; | |
2853 | next_arg = &(farg->next); | |
2854 | free_token(token); | |
2855 | } | |
2856 | ||
2857 | type = read_token(&token); | |
2858 | *tok = token; | |
2859 | ||
2860 | return type; | |
3a3ffa2e SR |
2861 | |
2862 | err: | |
2863 | free_arg(farg); | |
2864 | free_token(token); | |
2865 | return EVENT_ERROR; | |
f7d82350 SR |
2866 | } |
2867 | ||
2868 | static enum event_type | |
2869 | process_function(struct event_format *event, struct print_arg *arg, | |
2870 | char *token, char **tok) | |
2871 | { | |
2872 | struct pevent_function_handler *func; | |
2873 | ||
2874 | if (strcmp(token, "__print_flags") == 0) { | |
2875 | free_token(token); | |
5205aec9 | 2876 | is_flag_field = 1; |
f7d82350 SR |
2877 | return process_flags(event, arg, tok); |
2878 | } | |
2879 | if (strcmp(token, "__print_symbolic") == 0) { | |
2880 | free_token(token); | |
5205aec9 | 2881 | is_symbolic_field = 1; |
f7d82350 SR |
2882 | return process_symbols(event, arg, tok); |
2883 | } | |
e080e6f1 NK |
2884 | if (strcmp(token, "__print_hex") == 0) { |
2885 | free_token(token); | |
2886 | return process_hex(event, arg, tok); | |
2887 | } | |
b839e1e8 JM |
2888 | if (strcmp(token, "__print_array") == 0) { |
2889 | free_token(token); | |
2890 | return process_int_array(event, arg, tok); | |
2891 | } | |
f7d82350 SR |
2892 | if (strcmp(token, "__get_str") == 0) { |
2893 | free_token(token); | |
2894 | return process_str(event, arg, tok); | |
2895 | } | |
473a778a SRRH |
2896 | if (strcmp(token, "__get_bitmask") == 0) { |
2897 | free_token(token); | |
2898 | return process_bitmask(event, arg, tok); | |
2899 | } | |
f7d82350 SR |
2900 | if (strcmp(token, "__get_dynamic_array") == 0) { |
2901 | free_token(token); | |
2902 | return process_dynamic_array(event, arg, tok); | |
2903 | } | |
2904 | ||
2905 | func = find_func_handler(event->pevent, token); | |
2906 | if (func) { | |
2907 | free_token(token); | |
2908 | return process_func_handler(event, func, arg, tok); | |
2909 | } | |
2910 | ||
3388cc3e | 2911 | do_warning_event(event, "function %s not defined", token); |
f7d82350 SR |
2912 | free_token(token); |
2913 | return EVENT_ERROR; | |
2914 | } | |
2915 | ||
2916 | static enum event_type | |
2917 | process_arg_token(struct event_format *event, struct print_arg *arg, | |
2918 | char **tok, enum event_type type) | |
2919 | { | |
2920 | char *token; | |
2921 | char *atom; | |
2922 | ||
2923 | token = *tok; | |
2924 | ||
2925 | switch (type) { | |
2926 | case EVENT_ITEM: | |
2927 | if (strcmp(token, "REC") == 0) { | |
2928 | free_token(token); | |
2929 | type = process_entry(event, arg, &token); | |
2930 | break; | |
2931 | } | |
2932 | atom = token; | |
2933 | /* test the next token */ | |
2934 | type = read_token_item(&token); | |
2935 | ||
2936 | /* | |
2937 | * If the next token is a parenthesis, then this | |
2938 | * is a function. | |
2939 | */ | |
2940 | if (type == EVENT_DELIM && strcmp(token, "(") == 0) { | |
2941 | free_token(token); | |
2942 | token = NULL; | |
2943 | /* this will free atom. */ | |
2944 | type = process_function(event, arg, atom, &token); | |
2945 | break; | |
2946 | } | |
2947 | /* atoms can be more than one token long */ | |
2948 | while (type == EVENT_ITEM) { | |
d286447f NK |
2949 | char *new_atom; |
2950 | new_atom = realloc(atom, | |
2951 | strlen(atom) + strlen(token) + 2); | |
2952 | if (!new_atom) { | |
2953 | free(atom); | |
2954 | *tok = NULL; | |
2955 | free_token(token); | |
2956 | return EVENT_ERROR; | |
2957 | } | |
2958 | atom = new_atom; | |
f7d82350 SR |
2959 | strcat(atom, " "); |
2960 | strcat(atom, token); | |
2961 | free_token(token); | |
2962 | type = read_token_item(&token); | |
2963 | } | |
2964 | ||
2965 | arg->type = PRINT_ATOM; | |
2966 | arg->atom.atom = atom; | |
2967 | break; | |
2968 | ||
2969 | case EVENT_DQUOTE: | |
2970 | case EVENT_SQUOTE: | |
2971 | arg->type = PRINT_ATOM; | |
2972 | arg->atom.atom = token; | |
2973 | type = read_token_item(&token); | |
2974 | break; | |
2975 | case EVENT_DELIM: | |
2976 | if (strcmp(token, "(") == 0) { | |
2977 | free_token(token); | |
2978 | type = process_paren(event, arg, &token); | |
2979 | break; | |
2980 | } | |
2981 | case EVENT_OP: | |
2982 | /* handle single ops */ | |
2983 | arg->type = PRINT_OP; | |
2984 | arg->op.op = token; | |
2985 | arg->op.left = NULL; | |
2986 | type = process_op(event, arg, &token); | |
2987 | ||
2988 | /* On error, the op is freed */ | |
2989 | if (type == EVENT_ERROR) | |
2990 | arg->op.op = NULL; | |
2991 | ||
2992 | /* return error type if errored */ | |
2993 | break; | |
2994 | ||
2995 | case EVENT_ERROR ... EVENT_NEWLINE: | |
2996 | default: | |
3388cc3e | 2997 | do_warning_event(event, "unexpected type %d", type); |
a6d2a61a | 2998 | return EVENT_ERROR; |
f7d82350 SR |
2999 | } |
3000 | *tok = token; | |
3001 | ||
3002 | return type; | |
3003 | } | |
3004 | ||
3005 | static int event_read_print_args(struct event_format *event, struct print_arg **list) | |
3006 | { | |
3007 | enum event_type type = EVENT_ERROR; | |
3008 | struct print_arg *arg; | |
3009 | char *token; | |
3010 | int args = 0; | |
3011 | ||
3012 | do { | |
3013 | if (type == EVENT_NEWLINE) { | |
3014 | type = read_token_item(&token); | |
3015 | continue; | |
3016 | } | |
3017 | ||
3018 | arg = alloc_arg(); | |
b1ac754b | 3019 | if (!arg) { |
3388cc3e NK |
3020 | do_warning_event(event, "%s: not enough memory!", |
3021 | __func__); | |
b1ac754b NK |
3022 | return -1; |
3023 | } | |
f7d82350 SR |
3024 | |
3025 | type = process_arg(event, arg, &token); | |
3026 | ||
3027 | if (type == EVENT_ERROR) { | |
3028 | free_token(token); | |
3029 | free_arg(arg); | |
3030 | return -1; | |
3031 | } | |
3032 | ||
3033 | *list = arg; | |
3034 | args++; | |
3035 | ||
3036 | if (type == EVENT_OP) { | |
3037 | type = process_op(event, arg, &token); | |
3038 | free_token(token); | |
3039 | if (type == EVENT_ERROR) { | |
3040 | *list = NULL; | |
3041 | free_arg(arg); | |
3042 | return -1; | |
3043 | } | |
3044 | list = &arg->next; | |
3045 | continue; | |
3046 | } | |
3047 | ||
3048 | if (type == EVENT_DELIM && strcmp(token, ",") == 0) { | |
3049 | free_token(token); | |
3050 | *list = arg; | |
3051 | list = &arg->next; | |
3052 | continue; | |
3053 | } | |
3054 | break; | |
3055 | } while (type != EVENT_NONE); | |
3056 | ||
3057 | if (type != EVENT_NONE && type != EVENT_ERROR) | |
3058 | free_token(token); | |
3059 | ||
3060 | return args; | |
3061 | } | |
3062 | ||
3063 | static int event_read_print(struct event_format *event) | |
3064 | { | |
3065 | enum event_type type; | |
3066 | char *token; | |
3067 | int ret; | |
3068 | ||
3069 | if (read_expected_item(EVENT_ITEM, "print") < 0) | |
3070 | return -1; | |
3071 | ||
3072 | if (read_expected(EVENT_ITEM, "fmt") < 0) | |
3073 | return -1; | |
3074 | ||
3075 | if (read_expected(EVENT_OP, ":") < 0) | |
3076 | return -1; | |
3077 | ||
3078 | if (read_expect_type(EVENT_DQUOTE, &token) < 0) | |
3079 | goto fail; | |
3080 | ||
3081 | concat: | |
3082 | event->print_fmt.format = token; | |
3083 | event->print_fmt.args = NULL; | |
3084 | ||
3085 | /* ok to have no arg */ | |
3086 | type = read_token_item(&token); | |
3087 | ||
3088 | if (type == EVENT_NONE) | |
3089 | return 0; | |
3090 | ||
3091 | /* Handle concatenation of print lines */ | |
3092 | if (type == EVENT_DQUOTE) { | |
3093 | char *cat; | |
3094 | ||
0dbca1e3 ACM |
3095 | if (asprintf(&cat, "%s%s", event->print_fmt.format, token) < 0) |
3096 | goto fail; | |
f7d82350 SR |
3097 | free_token(token); |
3098 | free_token(event->print_fmt.format); | |
3099 | event->print_fmt.format = NULL; | |
3100 | token = cat; | |
3101 | goto concat; | |
3102 | } | |
3103 | ||
3104 | if (test_type_token(type, token, EVENT_DELIM, ",")) | |
3105 | goto fail; | |
3106 | ||
3107 | free_token(token); | |
3108 | ||
3109 | ret = event_read_print_args(event, &event->print_fmt.args); | |
3110 | if (ret < 0) | |
3111 | return -1; | |
3112 | ||
3113 | return ret; | |
3114 | ||
3115 | fail: | |
3116 | free_token(token); | |
3117 | return -1; | |
3118 | } | |
3119 | ||
3120 | /** | |
3121 | * pevent_find_common_field - return a common field by event | |
3122 | * @event: handle for the event | |
3123 | * @name: the name of the common field to return | |
3124 | * | |
3125 | * Returns a common field from the event by the given @name. | |
3126 | * This only searchs the common fields and not all field. | |
3127 | */ | |
3128 | struct format_field * | |
3129 | pevent_find_common_field(struct event_format *event, const char *name) | |
3130 | { | |
3131 | struct format_field *format; | |
3132 | ||
3133 | for (format = event->format.common_fields; | |
3134 | format; format = format->next) { | |
3135 | if (strcmp(format->name, name) == 0) | |
3136 | break; | |
3137 | } | |
3138 | ||
3139 | return format; | |
3140 | } | |
3141 | ||
3142 | /** | |
3143 | * pevent_find_field - find a non-common field | |
3144 | * @event: handle for the event | |
3145 | * @name: the name of the non-common field | |
3146 | * | |
3147 | * Returns a non-common field by the given @name. | |
3148 | * This does not search common fields. | |
3149 | */ | |
3150 | struct format_field * | |
3151 | pevent_find_field(struct event_format *event, const char *name) | |
3152 | { | |
3153 | struct format_field *format; | |
3154 | ||
3155 | for (format = event->format.fields; | |
3156 | format; format = format->next) { | |
3157 | if (strcmp(format->name, name) == 0) | |
3158 | break; | |
3159 | } | |
3160 | ||
3161 | return format; | |
3162 | } | |
3163 | ||
3164 | /** | |
3165 | * pevent_find_any_field - find any field by name | |
3166 | * @event: handle for the event | |
3167 | * @name: the name of the field | |
3168 | * | |
3169 | * Returns a field by the given @name. | |
3170 | * This searchs the common field names first, then | |
3171 | * the non-common ones if a common one was not found. | |
3172 | */ | |
3173 | struct format_field * | |
3174 | pevent_find_any_field(struct event_format *event, const char *name) | |
3175 | { | |
3176 | struct format_field *format; | |
3177 | ||
3178 | format = pevent_find_common_field(event, name); | |
3179 | if (format) | |
3180 | return format; | |
3181 | return pevent_find_field(event, name); | |
3182 | } | |
3183 | ||
3184 | /** | |
3185 | * pevent_read_number - read a number from data | |
3186 | * @pevent: handle for the pevent | |
3187 | * @ptr: the raw data | |
3188 | * @size: the size of the data that holds the number | |
3189 | * | |
3190 | * Returns the number (converted to host) from the | |
3191 | * raw data. | |
3192 | */ | |
3193 | unsigned long long pevent_read_number(struct pevent *pevent, | |
3194 | const void *ptr, int size) | |
3195 | { | |
3196 | switch (size) { | |
3197 | case 1: | |
3198 | return *(unsigned char *)ptr; | |
3199 | case 2: | |
3200 | return data2host2(pevent, ptr); | |
3201 | case 4: | |
3202 | return data2host4(pevent, ptr); | |
3203 | case 8: | |
3204 | return data2host8(pevent, ptr); | |
3205 | default: | |
3206 | /* BUG! */ | |
3207 | return 0; | |
3208 | } | |
3209 | } | |
3210 | ||
3211 | /** | |
3212 | * pevent_read_number_field - read a number from data | |
3213 | * @field: a handle to the field | |
3214 | * @data: the raw data to read | |
3215 | * @value: the value to place the number in | |
3216 | * | |
3217 | * Reads raw data according to a field offset and size, | |
3218 | * and translates it into @value. | |
3219 | * | |
3220 | * Returns 0 on success, -1 otherwise. | |
3221 | */ | |
3222 | int pevent_read_number_field(struct format_field *field, const void *data, | |
3223 | unsigned long long *value) | |
3224 | { | |
3225 | if (!field) | |
3226 | return -1; | |
3227 | switch (field->size) { | |
3228 | case 1: | |
3229 | case 2: | |
3230 | case 4: | |
3231 | case 8: | |
3232 | *value = pevent_read_number(field->event->pevent, | |
3233 | data + field->offset, field->size); | |
3234 | return 0; | |
3235 | default: | |
3236 | return -1; | |
3237 | } | |
3238 | } | |
3239 | ||
3240 | static int get_common_info(struct pevent *pevent, | |
3241 | const char *type, int *offset, int *size) | |
3242 | { | |
3243 | struct event_format *event; | |
3244 | struct format_field *field; | |
3245 | ||
3246 | /* | |
3247 | * All events should have the same common elements. | |
3248 | * Pick any event to find where the type is; | |
3249 | */ | |
a6d2a61a ACM |
3250 | if (!pevent->events) { |
3251 | do_warning("no event_list!"); | |
3252 | return -1; | |
3253 | } | |
f7d82350 SR |
3254 | |
3255 | event = pevent->events[0]; | |
3256 | field = pevent_find_common_field(event, type); | |
3257 | if (!field) | |
0866a97e | 3258 | return -1; |
f7d82350 SR |
3259 | |
3260 | *offset = field->offset; | |
3261 | *size = field->size; | |
3262 | ||
3263 | return 0; | |
3264 | } | |
3265 | ||
3266 | static int __parse_common(struct pevent *pevent, void *data, | |
3267 | int *size, int *offset, const char *name) | |
3268 | { | |
3269 | int ret; | |
3270 | ||
3271 | if (!*size) { | |
3272 | ret = get_common_info(pevent, name, offset, size); | |
3273 | if (ret < 0) | |
3274 | return ret; | |
3275 | } | |
3276 | return pevent_read_number(pevent, data + *offset, *size); | |
3277 | } | |
3278 | ||
3279 | static int trace_parse_common_type(struct pevent *pevent, void *data) | |
3280 | { | |
3281 | return __parse_common(pevent, data, | |
3282 | &pevent->type_size, &pevent->type_offset, | |
3283 | "common_type"); | |
3284 | } | |
3285 | ||
3286 | static int parse_common_pid(struct pevent *pevent, void *data) | |
3287 | { | |
3288 | return __parse_common(pevent, data, | |
3289 | &pevent->pid_size, &pevent->pid_offset, | |
3290 | "common_pid"); | |
3291 | } | |
3292 | ||
3293 | static int parse_common_pc(struct pevent *pevent, void *data) | |
3294 | { | |
3295 | return __parse_common(pevent, data, | |
3296 | &pevent->pc_size, &pevent->pc_offset, | |
3297 | "common_preempt_count"); | |
3298 | } | |
3299 | ||
3300 | static int parse_common_flags(struct pevent *pevent, void *data) | |
3301 | { | |
3302 | return __parse_common(pevent, data, | |
3303 | &pevent->flags_size, &pevent->flags_offset, | |
3304 | "common_flags"); | |
3305 | } | |
3306 | ||
3307 | static int parse_common_lock_depth(struct pevent *pevent, void *data) | |
3308 | { | |
0866a97e SR |
3309 | return __parse_common(pevent, data, |
3310 | &pevent->ld_size, &pevent->ld_offset, | |
3311 | "common_lock_depth"); | |
3312 | } | |
f7d82350 | 3313 | |
0866a97e SR |
3314 | static int parse_common_migrate_disable(struct pevent *pevent, void *data) |
3315 | { | |
3316 | return __parse_common(pevent, data, | |
3317 | &pevent->ld_size, &pevent->ld_offset, | |
3318 | "common_migrate_disable"); | |
f7d82350 SR |
3319 | } |
3320 | ||
3321 | static int events_id_cmp(const void *a, const void *b); | |
3322 | ||
3323 | /** | |
3324 | * pevent_find_event - find an event by given id | |
3325 | * @pevent: a handle to the pevent | |
3326 | * @id: the id of the event | |
3327 | * | |
3328 | * Returns an event that has a given @id. | |
3329 | */ | |
3330 | struct event_format *pevent_find_event(struct pevent *pevent, int id) | |
3331 | { | |
3332 | struct event_format **eventptr; | |
3333 | struct event_format key; | |
3334 | struct event_format *pkey = &key; | |
3335 | ||
3336 | /* Check cache first */ | |
3337 | if (pevent->last_event && pevent->last_event->id == id) | |
3338 | return pevent->last_event; | |
3339 | ||
3340 | key.id = id; | |
3341 | ||
3342 | eventptr = bsearch(&pkey, pevent->events, pevent->nr_events, | |
3343 | sizeof(*pevent->events), events_id_cmp); | |
3344 | ||
3345 | if (eventptr) { | |
3346 | pevent->last_event = *eventptr; | |
3347 | return *eventptr; | |
3348 | } | |
3349 | ||
3350 | return NULL; | |
3351 | } | |
3352 | ||
3353 | /** | |
3354 | * pevent_find_event_by_name - find an event by given name | |
3355 | * @pevent: a handle to the pevent | |
3356 | * @sys: the system name to search for | |
3357 | * @name: the name of the event to search for | |
3358 | * | |
3359 | * This returns an event with a given @name and under the system | |
3360 | * @sys. If @sys is NULL the first event with @name is returned. | |
3361 | */ | |
3362 | struct event_format * | |
3363 | pevent_find_event_by_name(struct pevent *pevent, | |
3364 | const char *sys, const char *name) | |
3365 | { | |
3366 | struct event_format *event; | |
3367 | int i; | |
3368 | ||
3369 | if (pevent->last_event && | |
3370 | strcmp(pevent->last_event->name, name) == 0 && | |
3371 | (!sys || strcmp(pevent->last_event->system, sys) == 0)) | |
3372 | return pevent->last_event; | |
3373 | ||
3374 | for (i = 0; i < pevent->nr_events; i++) { | |
3375 | event = pevent->events[i]; | |
3376 | if (strcmp(event->name, name) == 0) { | |
3377 | if (!sys) | |
3378 | break; | |
3379 | if (strcmp(event->system, sys) == 0) | |
3380 | break; | |
3381 | } | |
3382 | } | |
3383 | if (i == pevent->nr_events) | |
3384 | event = NULL; | |
3385 | ||
3386 | pevent->last_event = event; | |
3387 | return event; | |
3388 | } | |
3389 | ||
3390 | static unsigned long long | |
3391 | eval_num_arg(void *data, int size, struct event_format *event, struct print_arg *arg) | |
3392 | { | |
3393 | struct pevent *pevent = event->pevent; | |
3394 | unsigned long long val = 0; | |
3395 | unsigned long long left, right; | |
3396 | struct print_arg *typearg = NULL; | |
3397 | struct print_arg *larg; | |
3398 | unsigned long offset; | |
3399 | unsigned int field_size; | |
3400 | ||
3401 | switch (arg->type) { | |
3402 | case PRINT_NULL: | |
3403 | /* ?? */ | |
3404 | return 0; | |
3405 | case PRINT_ATOM: | |
3406 | return strtoull(arg->atom.atom, NULL, 0); | |
3407 | case PRINT_FIELD: | |
3408 | if (!arg->field.field) { | |
3409 | arg->field.field = pevent_find_any_field(event, arg->field.name); | |
3410 | if (!arg->field.field) | |
a6d2a61a ACM |
3411 | goto out_warning_field; |
3412 | ||
f7d82350 SR |
3413 | } |
3414 | /* must be a number */ | |
3415 | val = pevent_read_number(pevent, data + arg->field.field->offset, | |
3416 | arg->field.field->size); | |
3417 | break; | |
3418 | case PRINT_FLAGS: | |
3419 | case PRINT_SYMBOL: | |
b839e1e8 | 3420 | case PRINT_INT_ARRAY: |
e080e6f1 | 3421 | case PRINT_HEX: |
f7d82350 SR |
3422 | break; |
3423 | case PRINT_TYPE: | |
3424 | val = eval_num_arg(data, size, event, arg->typecast.item); | |
3425 | return eval_type(val, arg, 0); | |
3426 | case PRINT_STRING: | |
3427 | case PRINT_BSTRING: | |
473a778a | 3428 | case PRINT_BITMASK: |
f7d82350 SR |
3429 | return 0; |
3430 | case PRINT_FUNC: { | |
3431 | struct trace_seq s; | |
3432 | trace_seq_init(&s); | |
3433 | val = process_defined_func(&s, data, size, event, arg); | |
3434 | trace_seq_destroy(&s); | |
3435 | return val; | |
3436 | } | |
3437 | case PRINT_OP: | |
3438 | if (strcmp(arg->op.op, "[") == 0) { | |
3439 | /* | |
3440 | * Arrays are special, since we don't want | |
3441 | * to read the arg as is. | |
3442 | */ | |
3443 | right = eval_num_arg(data, size, event, arg->op.right); | |
3444 | ||
3445 | /* handle typecasts */ | |
3446 | larg = arg->op.left; | |
3447 | while (larg->type == PRINT_TYPE) { | |
3448 | if (!typearg) | |
3449 | typearg = larg; | |
3450 | larg = larg->typecast.item; | |
3451 | } | |
3452 | ||
3453 | /* Default to long size */ | |
3454 | field_size = pevent->long_size; | |
3455 | ||
3456 | switch (larg->type) { | |
3457 | case PRINT_DYNAMIC_ARRAY: | |
3458 | offset = pevent_read_number(pevent, | |
3459 | data + larg->dynarray.field->offset, | |
3460 | larg->dynarray.field->size); | |
3461 | if (larg->dynarray.field->elementsize) | |
3462 | field_size = larg->dynarray.field->elementsize; | |
3463 | /* | |
3464 | * The actual length of the dynamic array is stored | |
3465 | * in the top half of the field, and the offset | |
3466 | * is in the bottom half of the 32 bit field. | |
3467 | */ | |
3468 | offset &= 0xffff; | |
3469 | offset += right; | |
3470 | break; | |
3471 | case PRINT_FIELD: | |
3472 | if (!larg->field.field) { | |
3473 | larg->field.field = | |
3474 | pevent_find_any_field(event, larg->field.name); | |
a6d2a61a ACM |
3475 | if (!larg->field.field) { |
3476 | arg = larg; | |
3477 | goto out_warning_field; | |
3478 | } | |
f7d82350 SR |
3479 | } |
3480 | field_size = larg->field.field->elementsize; | |
3481 | offset = larg->field.field->offset + | |
3482 | right * larg->field.field->elementsize; | |
3483 | break; | |
3484 | default: | |
3485 | goto default_op; /* oops, all bets off */ | |
3486 | } | |
3487 | val = pevent_read_number(pevent, | |
3488 | data + offset, field_size); | |
3489 | if (typearg) | |
3490 | val = eval_type(val, typearg, 1); | |
3491 | break; | |
3492 | } else if (strcmp(arg->op.op, "?") == 0) { | |
3493 | left = eval_num_arg(data, size, event, arg->op.left); | |
3494 | arg = arg->op.right; | |
3495 | if (left) | |
3496 | val = eval_num_arg(data, size, event, arg->op.left); | |
3497 | else | |
3498 | val = eval_num_arg(data, size, event, arg->op.right); | |
3499 | break; | |
3500 | } | |
3501 | default_op: | |
3502 | left = eval_num_arg(data, size, event, arg->op.left); | |
3503 | right = eval_num_arg(data, size, event, arg->op.right); | |
3504 | switch (arg->op.op[0]) { | |
3505 | case '!': | |
3506 | switch (arg->op.op[1]) { | |
3507 | case 0: | |
3508 | val = !right; | |
3509 | break; | |
3510 | case '=': | |
3511 | val = left != right; | |
3512 | break; | |
3513 | default: | |
a6d2a61a | 3514 | goto out_warning_op; |
f7d82350 SR |
3515 | } |
3516 | break; | |
3517 | case '~': | |
3518 | val = ~right; | |
3519 | break; | |
3520 | case '|': | |
3521 | if (arg->op.op[1]) | |
3522 | val = left || right; | |
3523 | else | |
3524 | val = left | right; | |
3525 | break; | |
3526 | case '&': | |
3527 | if (arg->op.op[1]) | |
3528 | val = left && right; | |
3529 | else | |
3530 | val = left & right; | |
3531 | break; | |
3532 | case '<': | |
3533 | switch (arg->op.op[1]) { | |
3534 | case 0: | |
3535 | val = left < right; | |
3536 | break; | |
3537 | case '<': | |
3538 | val = left << right; | |
3539 | break; | |
3540 | case '=': | |
3541 | val = left <= right; | |
3542 | break; | |
3543 | default: | |
a6d2a61a | 3544 | goto out_warning_op; |
f7d82350 SR |
3545 | } |
3546 | break; | |
3547 | case '>': | |
3548 | switch (arg->op.op[1]) { | |
3549 | case 0: | |
3550 | val = left > right; | |
3551 | break; | |
3552 | case '>': | |
3553 | val = left >> right; | |
3554 | break; | |
3555 | case '=': | |
3556 | val = left >= right; | |
3557 | break; | |
3558 | default: | |
a6d2a61a | 3559 | goto out_warning_op; |
f7d82350 SR |
3560 | } |
3561 | break; | |
3562 | case '=': | |
3563 | if (arg->op.op[1] != '=') | |
a6d2a61a ACM |
3564 | goto out_warning_op; |
3565 | ||
f7d82350 SR |
3566 | val = left == right; |
3567 | break; | |
3568 | case '-': | |
3569 | val = left - right; | |
3570 | break; | |
3571 | case '+': | |
3572 | val = left + right; | |
3573 | break; | |
2e7a5fc8 SR |
3574 | case '/': |
3575 | val = left / right; | |
3576 | break; | |
3577 | case '*': | |
3578 | val = left * right; | |
3579 | break; | |
f7d82350 | 3580 | default: |
a6d2a61a | 3581 | goto out_warning_op; |
f7d82350 SR |
3582 | } |
3583 | break; | |
0497a9eb SR |
3584 | case PRINT_DYNAMIC_ARRAY: |
3585 | /* Without [], we pass the address to the dynamic data */ | |
3586 | offset = pevent_read_number(pevent, | |
3587 | data + arg->dynarray.field->offset, | |
3588 | arg->dynarray.field->size); | |
3589 | /* | |
3590 | * The actual length of the dynamic array is stored | |
3591 | * in the top half of the field, and the offset | |
3592 | * is in the bottom half of the 32 bit field. | |
3593 | */ | |
3594 | offset &= 0xffff; | |
6b5fa0ba | 3595 | val = (unsigned long long)((unsigned long)data + offset); |
0497a9eb | 3596 | break; |
f7d82350 SR |
3597 | default: /* not sure what to do there */ |
3598 | return 0; | |
3599 | } | |
3600 | return val; | |
a6d2a61a ACM |
3601 | |
3602 | out_warning_op: | |
3388cc3e | 3603 | do_warning_event(event, "%s: unknown op '%s'", __func__, arg->op.op); |
a6d2a61a ACM |
3604 | return 0; |
3605 | ||
3606 | out_warning_field: | |
3388cc3e NK |
3607 | do_warning_event(event, "%s: field %s not found", |
3608 | __func__, arg->field.name); | |
a6d2a61a | 3609 | return 0; |
f7d82350 SR |
3610 | } |
3611 | ||
3612 | struct flag { | |
3613 | const char *name; | |
3614 | unsigned long long value; | |
3615 | }; | |
3616 | ||
3617 | static const struct flag flags[] = { | |
3618 | { "HI_SOFTIRQ", 0 }, | |
3619 | { "TIMER_SOFTIRQ", 1 }, | |
3620 | { "NET_TX_SOFTIRQ", 2 }, | |
3621 | { "NET_RX_SOFTIRQ", 3 }, | |
3622 | { "BLOCK_SOFTIRQ", 4 }, | |
3623 | { "BLOCK_IOPOLL_SOFTIRQ", 5 }, | |
3624 | { "TASKLET_SOFTIRQ", 6 }, | |
3625 | { "SCHED_SOFTIRQ", 7 }, | |
3626 | { "HRTIMER_SOFTIRQ", 8 }, | |
3627 | { "RCU_SOFTIRQ", 9 }, | |
3628 | ||
3629 | { "HRTIMER_NORESTART", 0 }, | |
3630 | { "HRTIMER_RESTART", 1 }, | |
3631 | }; | |
3632 | ||
7c27f78a | 3633 | static long long eval_flag(const char *flag) |
f7d82350 SR |
3634 | { |
3635 | int i; | |
3636 | ||
3637 | /* | |
3638 | * Some flags in the format files do not get converted. | |
3639 | * If the flag is not numeric, see if it is something that | |
3640 | * we already know about. | |
3641 | */ | |
3642 | if (isdigit(flag[0])) | |
3643 | return strtoull(flag, NULL, 0); | |
3644 | ||
3645 | for (i = 0; i < (int)(sizeof(flags)/sizeof(flags[0])); i++) | |
3646 | if (strcmp(flags[i].name, flag) == 0) | |
3647 | return flags[i].value; | |
3648 | ||
7c27f78a | 3649 | return -1LL; |
f7d82350 SR |
3650 | } |
3651 | ||
3652 | static void print_str_to_seq(struct trace_seq *s, const char *format, | |
3653 | int len_arg, const char *str) | |
3654 | { | |
3655 | if (len_arg >= 0) | |
3656 | trace_seq_printf(s, format, len_arg, str); | |
3657 | else | |
3658 | trace_seq_printf(s, format, str); | |
3659 | } | |
3660 | ||
473a778a SRRH |
3661 | static void print_bitmask_to_seq(struct pevent *pevent, |
3662 | struct trace_seq *s, const char *format, | |
3663 | int len_arg, const void *data, int size) | |
3664 | { | |
3665 | int nr_bits = size * 8; | |
3666 | int str_size = (nr_bits + 3) / 4; | |
3667 | int len = 0; | |
3668 | char buf[3]; | |
3669 | char *str; | |
3670 | int index; | |
3671 | int i; | |
3672 | ||
3673 | /* | |
3674 | * The kernel likes to put in commas every 32 bits, we | |
3675 | * can do the same. | |
3676 | */ | |
3677 | str_size += (nr_bits - 1) / 32; | |
3678 | ||
3679 | str = malloc(str_size + 1); | |
3680 | if (!str) { | |
3681 | do_warning("%s: not enough memory!", __func__); | |
3682 | return; | |
3683 | } | |
3684 | str[str_size] = 0; | |
3685 | ||
3686 | /* Start out with -2 for the two chars per byte */ | |
3687 | for (i = str_size - 2; i >= 0; i -= 2) { | |
3688 | /* | |
3689 | * data points to a bit mask of size bytes. | |
3690 | * In the kernel, this is an array of long words, thus | |
3691 | * endianess is very important. | |
3692 | */ | |
3693 | if (pevent->file_bigendian) | |
3694 | index = size - (len + 1); | |
3695 | else | |
3696 | index = len; | |
3697 | ||
3698 | snprintf(buf, 3, "%02x", *((unsigned char *)data + index)); | |
3699 | memcpy(str + i, buf, 2); | |
3700 | len++; | |
3701 | if (!(len & 3) && i > 0) { | |
3702 | i--; | |
3703 | str[i] = ','; | |
3704 | } | |
3705 | } | |
3706 | ||
3707 | if (len_arg >= 0) | |
3708 | trace_seq_printf(s, format, len_arg, str); | |
3709 | else | |
3710 | trace_seq_printf(s, format, str); | |
3711 | ||
3712 | free(str); | |
3713 | } | |
3714 | ||
f7d82350 SR |
3715 | static void print_str_arg(struct trace_seq *s, void *data, int size, |
3716 | struct event_format *event, const char *format, | |
3717 | int len_arg, struct print_arg *arg) | |
3718 | { | |
3719 | struct pevent *pevent = event->pevent; | |
3720 | struct print_flag_sym *flag; | |
b7008071 | 3721 | struct format_field *field; |
0970b5f4 | 3722 | struct printk_map *printk; |
7c27f78a | 3723 | long long val, fval; |
f7d82350 SR |
3724 | unsigned long addr; |
3725 | char *str; | |
e080e6f1 | 3726 | unsigned char *hex; |
f7d82350 | 3727 | int print; |
e080e6f1 | 3728 | int i, len; |
f7d82350 SR |
3729 | |
3730 | switch (arg->type) { | |
3731 | case PRINT_NULL: | |
3732 | /* ?? */ | |
3733 | return; | |
3734 | case PRINT_ATOM: | |
3735 | print_str_to_seq(s, format, len_arg, arg->atom.atom); | |
3736 | return; | |
3737 | case PRINT_FIELD: | |
b7008071 NK |
3738 | field = arg->field.field; |
3739 | if (!field) { | |
3740 | field = pevent_find_any_field(event, arg->field.name); | |
a6d2a61a ACM |
3741 | if (!field) { |
3742 | str = arg->field.name; | |
3743 | goto out_warning_field; | |
3744 | } | |
b7008071 | 3745 | arg->field.field = field; |
f7d82350 SR |
3746 | } |
3747 | /* Zero sized fields, mean the rest of the data */ | |
b7008071 | 3748 | len = field->size ? : size - field->offset; |
f7d82350 SR |
3749 | |
3750 | /* | |
3751 | * Some events pass in pointers. If this is not an array | |
3752 | * and the size is the same as long_size, assume that it | |
3753 | * is a pointer. | |
3754 | */ | |
b7008071 NK |
3755 | if (!(field->flags & FIELD_IS_ARRAY) && |
3756 | field->size == pevent->long_size) { | |
3757 | addr = *(unsigned long *)(data + field->offset); | |
0970b5f4 SRRH |
3758 | /* Check if it matches a print format */ |
3759 | printk = find_printk(pevent, addr); | |
3760 | if (printk) | |
3761 | trace_seq_puts(s, printk->printk); | |
3762 | else | |
3763 | trace_seq_printf(s, "%lx", addr); | |
f7d82350 SR |
3764 | break; |
3765 | } | |
a6d2a61a ACM |
3766 | str = malloc(len + 1); |
3767 | if (!str) { | |
3388cc3e NK |
3768 | do_warning_event(event, "%s: not enough memory!", |
3769 | __func__); | |
a6d2a61a ACM |
3770 | return; |
3771 | } | |
b7008071 | 3772 | memcpy(str, data + field->offset, len); |
f7d82350 SR |
3773 | str[len] = 0; |
3774 | print_str_to_seq(s, format, len_arg, str); | |
3775 | free(str); | |
3776 | break; | |
3777 | case PRINT_FLAGS: | |
3778 | val = eval_num_arg(data, size, event, arg->flags.field); | |
3779 | print = 0; | |
3780 | for (flag = arg->flags.flags; flag; flag = flag->next) { | |
3781 | fval = eval_flag(flag->value); | |
7c27f78a | 3782 | if (!val && fval < 0) { |
f7d82350 SR |
3783 | print_str_to_seq(s, format, len_arg, flag->str); |
3784 | break; | |
3785 | } | |
7c27f78a | 3786 | if (fval > 0 && (val & fval) == fval) { |
f7d82350 SR |
3787 | if (print && arg->flags.delim) |
3788 | trace_seq_puts(s, arg->flags.delim); | |
3789 | print_str_to_seq(s, format, len_arg, flag->str); | |
3790 | print = 1; | |
3791 | val &= ~fval; | |
3792 | } | |
3793 | } | |
3794 | break; | |
3795 | case PRINT_SYMBOL: | |
3796 | val = eval_num_arg(data, size, event, arg->symbol.field); | |
3797 | for (flag = arg->symbol.symbols; flag; flag = flag->next) { | |
3798 | fval = eval_flag(flag->value); | |
3799 | if (val == fval) { | |
3800 | print_str_to_seq(s, format, len_arg, flag->str); | |
3801 | break; | |
3802 | } | |
3803 | } | |
3804 | break; | |
e080e6f1 | 3805 | case PRINT_HEX: |
b30f75eb HC |
3806 | if (arg->hex.field->type == PRINT_DYNAMIC_ARRAY) { |
3807 | unsigned long offset; | |
3808 | offset = pevent_read_number(pevent, | |
3809 | data + arg->hex.field->dynarray.field->offset, | |
3810 | arg->hex.field->dynarray.field->size); | |
3811 | hex = data + (offset & 0xffff); | |
3812 | } else { | |
3813 | field = arg->hex.field->field.field; | |
3814 | if (!field) { | |
3815 | str = arg->hex.field->field.name; | |
3816 | field = pevent_find_any_field(event, str); | |
3817 | if (!field) | |
3818 | goto out_warning_field; | |
3819 | arg->hex.field->field.field = field; | |
3820 | } | |
3821 | hex = data + field->offset; | |
e080e6f1 | 3822 | } |
e080e6f1 NK |
3823 | len = eval_num_arg(data, size, event, arg->hex.size); |
3824 | for (i = 0; i < len; i++) { | |
3825 | if (i) | |
3826 | trace_seq_putc(s, ' '); | |
3827 | trace_seq_printf(s, "%02x", hex[i]); | |
3828 | } | |
3829 | break; | |
f7d82350 | 3830 | |
b839e1e8 JM |
3831 | case PRINT_INT_ARRAY: { |
3832 | void *num; | |
3833 | int el_size; | |
3834 | ||
3835 | if (arg->int_array.field->type == PRINT_DYNAMIC_ARRAY) { | |
3836 | unsigned long offset; | |
3837 | struct format_field *field = | |
3838 | arg->int_array.field->dynarray.field; | |
3839 | offset = pevent_read_number(pevent, | |
3840 | data + field->offset, | |
3841 | field->size); | |
3842 | num = data + (offset & 0xffff); | |
3843 | } else { | |
3844 | field = arg->int_array.field->field.field; | |
3845 | if (!field) { | |
3846 | str = arg->int_array.field->field.name; | |
3847 | field = pevent_find_any_field(event, str); | |
3848 | if (!field) | |
3849 | goto out_warning_field; | |
3850 | arg->int_array.field->field.field = field; | |
3851 | } | |
3852 | num = data + field->offset; | |
3853 | } | |
3854 | len = eval_num_arg(data, size, event, arg->int_array.count); | |
3855 | el_size = eval_num_arg(data, size, event, | |
3856 | arg->int_array.el_size); | |
3857 | for (i = 0; i < len; i++) { | |
3858 | if (i) | |
3859 | trace_seq_putc(s, ' '); | |
3860 | ||
3861 | if (el_size == 1) { | |
3862 | trace_seq_printf(s, "%u", *(uint8_t *)num); | |
3863 | } else if (el_size == 2) { | |
3864 | trace_seq_printf(s, "%u", *(uint16_t *)num); | |
3865 | } else if (el_size == 4) { | |
3866 | trace_seq_printf(s, "%u", *(uint32_t *)num); | |
3867 | } else if (el_size == 8) { | |
410ceb8f | 3868 | trace_seq_printf(s, "%"PRIu64, *(uint64_t *)num); |
b839e1e8 JM |
3869 | } else { |
3870 | trace_seq_printf(s, "BAD SIZE:%d 0x%x", | |
3871 | el_size, *(uint8_t *)num); | |
3872 | el_size = 1; | |
3873 | } | |
3874 | ||
3875 | num += el_size; | |
3876 | } | |
3877 | break; | |
3878 | } | |
f7d82350 SR |
3879 | case PRINT_TYPE: |
3880 | break; | |
3881 | case PRINT_STRING: { | |
3882 | int str_offset; | |
3883 | ||
3884 | if (arg->string.offset == -1) { | |
3885 | struct format_field *f; | |
3886 | ||
3887 | f = pevent_find_any_field(event, arg->string.string); | |
3888 | arg->string.offset = f->offset; | |
3889 | } | |
3890 | str_offset = data2host4(pevent, data + arg->string.offset); | |
3891 | str_offset &= 0xffff; | |
3892 | print_str_to_seq(s, format, len_arg, ((char *)data) + str_offset); | |
3893 | break; | |
3894 | } | |
3895 | case PRINT_BSTRING: | |
c2e6dc2b | 3896 | print_str_to_seq(s, format, len_arg, arg->string.string); |
f7d82350 | 3897 | break; |
473a778a SRRH |
3898 | case PRINT_BITMASK: { |
3899 | int bitmask_offset; | |
3900 | int bitmask_size; | |
3901 | ||
3902 | if (arg->bitmask.offset == -1) { | |
3903 | struct format_field *f; | |
3904 | ||
3905 | f = pevent_find_any_field(event, arg->bitmask.bitmask); | |
3906 | arg->bitmask.offset = f->offset; | |
3907 | } | |
3908 | bitmask_offset = data2host4(pevent, data + arg->bitmask.offset); | |
3909 | bitmask_size = bitmask_offset >> 16; | |
3910 | bitmask_offset &= 0xffff; | |
3911 | print_bitmask_to_seq(pevent, s, format, len_arg, | |
3912 | data + bitmask_offset, bitmask_size); | |
3913 | break; | |
3914 | } | |
f7d82350 SR |
3915 | case PRINT_OP: |
3916 | /* | |
3917 | * The only op for string should be ? : | |
3918 | */ | |
3919 | if (arg->op.op[0] != '?') | |
3920 | return; | |
3921 | val = eval_num_arg(data, size, event, arg->op.left); | |
3922 | if (val) | |
3923 | print_str_arg(s, data, size, event, | |
3924 | format, len_arg, arg->op.right->op.left); | |
3925 | else | |
3926 | print_str_arg(s, data, size, event, | |
3927 | format, len_arg, arg->op.right->op.right); | |
3928 | break; | |
3929 | case PRINT_FUNC: | |
3930 | process_defined_func(s, data, size, event, arg); | |
3931 | break; | |
3932 | default: | |
3933 | /* well... */ | |
3934 | break; | |
3935 | } | |
a6d2a61a ACM |
3936 | |
3937 | return; | |
3938 | ||
3939 | out_warning_field: | |
3388cc3e NK |
3940 | do_warning_event(event, "%s: field %s not found", |
3941 | __func__, arg->field.name); | |
f7d82350 SR |
3942 | } |
3943 | ||
3944 | static unsigned long long | |
3945 | process_defined_func(struct trace_seq *s, void *data, int size, | |
3946 | struct event_format *event, struct print_arg *arg) | |
3947 | { | |
3948 | struct pevent_function_handler *func_handle = arg->func.func; | |
3949 | struct pevent_func_params *param; | |
3950 | unsigned long long *args; | |
3951 | unsigned long long ret; | |
3952 | struct print_arg *farg; | |
3953 | struct trace_seq str; | |
3954 | struct save_str { | |
3955 | struct save_str *next; | |
3956 | char *str; | |
3957 | } *strings = NULL, *string; | |
3958 | int i; | |
3959 | ||
3960 | if (!func_handle->nr_args) { | |
3961 | ret = (*func_handle->func)(s, NULL); | |
3962 | goto out; | |
3963 | } | |
3964 | ||
3965 | farg = arg->func.args; | |
3966 | param = func_handle->params; | |
3967 | ||
a6d2a61a ACM |
3968 | ret = ULLONG_MAX; |
3969 | args = malloc(sizeof(*args) * func_handle->nr_args); | |
3970 | if (!args) | |
3971 | goto out; | |
3972 | ||
f7d82350 SR |
3973 | for (i = 0; i < func_handle->nr_args; i++) { |
3974 | switch (param->type) { | |
3975 | case PEVENT_FUNC_ARG_INT: | |
3976 | case PEVENT_FUNC_ARG_LONG: | |
3977 | case PEVENT_FUNC_ARG_PTR: | |
3978 | args[i] = eval_num_arg(data, size, event, farg); | |
3979 | break; | |
3980 | case PEVENT_FUNC_ARG_STRING: | |
3981 | trace_seq_init(&str); | |
3982 | print_str_arg(&str, data, size, event, "%s", -1, farg); | |
3983 | trace_seq_terminate(&str); | |
a6d2a61a ACM |
3984 | string = malloc(sizeof(*string)); |
3985 | if (!string) { | |
3388cc3e NK |
3986 | do_warning_event(event, "%s(%d): malloc str", |
3987 | __func__, __LINE__); | |
a6d2a61a ACM |
3988 | goto out_free; |
3989 | } | |
f7d82350 SR |
3990 | string->next = strings; |
3991 | string->str = strdup(str.buffer); | |
a6d2a61a ACM |
3992 | if (!string->str) { |
3993 | free(string); | |
3388cc3e NK |
3994 | do_warning_event(event, "%s(%d): malloc str", |
3995 | __func__, __LINE__); | |
a6d2a61a ACM |
3996 | goto out_free; |
3997 | } | |
0cf26013 | 3998 | args[i] = (uintptr_t)string->str; |
f7d82350 SR |
3999 | strings = string; |
4000 | trace_seq_destroy(&str); | |
4001 | break; | |
4002 | default: | |
4003 | /* | |
4004 | * Something went totally wrong, this is not | |
4005 | * an input error, something in this code broke. | |
4006 | */ | |
3388cc3e | 4007 | do_warning_event(event, "Unexpected end of arguments\n"); |
a6d2a61a | 4008 | goto out_free; |
f7d82350 SR |
4009 | } |
4010 | farg = farg->next; | |
21c69e72 | 4011 | param = param->next; |
f7d82350 SR |
4012 | } |
4013 | ||
4014 | ret = (*func_handle->func)(s, args); | |
a6d2a61a | 4015 | out_free: |
f7d82350 SR |
4016 | free(args); |
4017 | while (strings) { | |
4018 | string = strings; | |
4019 | strings = string->next; | |
4020 | free(string->str); | |
4021 | free(string); | |
4022 | } | |
4023 | ||
4024 | out: | |
4025 | /* TBD : handle return type here */ | |
4026 | return ret; | |
4027 | } | |
4028 | ||
0dbca1e3 ACM |
4029 | static void free_args(struct print_arg *args) |
4030 | { | |
4031 | struct print_arg *next; | |
4032 | ||
4033 | while (args) { | |
4034 | next = args->next; | |
4035 | ||
4036 | free_arg(args); | |
4037 | args = next; | |
4038 | } | |
4039 | } | |
4040 | ||
f7d82350 SR |
4041 | static struct print_arg *make_bprint_args(char *fmt, void *data, int size, struct event_format *event) |
4042 | { | |
4043 | struct pevent *pevent = event->pevent; | |
4044 | struct format_field *field, *ip_field; | |
4045 | struct print_arg *args, *arg, **next; | |
4046 | unsigned long long ip, val; | |
4047 | char *ptr; | |
4048 | void *bptr; | |
c2e6dc2b | 4049 | int vsize; |
f7d82350 SR |
4050 | |
4051 | field = pevent->bprint_buf_field; | |
4052 | ip_field = pevent->bprint_ip_field; | |
4053 | ||
4054 | if (!field) { | |
4055 | field = pevent_find_field(event, "buf"); | |
a6d2a61a | 4056 | if (!field) { |
3388cc3e | 4057 | do_warning_event(event, "can't find buffer field for binary printk"); |
a6d2a61a ACM |
4058 | return NULL; |
4059 | } | |
f7d82350 | 4060 | ip_field = pevent_find_field(event, "ip"); |
a6d2a61a | 4061 | if (!ip_field) { |
3388cc3e | 4062 | do_warning_event(event, "can't find ip field for binary printk"); |
a6d2a61a ACM |
4063 | return NULL; |
4064 | } | |
f7d82350 SR |
4065 | pevent->bprint_buf_field = field; |
4066 | pevent->bprint_ip_field = ip_field; | |
4067 | } | |
4068 | ||
4069 | ip = pevent_read_number(pevent, data + ip_field->offset, ip_field->size); | |
4070 | ||
4071 | /* | |
4072 | * The first arg is the IP pointer. | |
4073 | */ | |
4074 | args = alloc_arg(); | |
b1ac754b | 4075 | if (!args) { |
3388cc3e NK |
4076 | do_warning_event(event, "%s(%d): not enough memory!", |
4077 | __func__, __LINE__); | |
b1ac754b NK |
4078 | return NULL; |
4079 | } | |
f7d82350 SR |
4080 | arg = args; |
4081 | arg->next = NULL; | |
4082 | next = &arg->next; | |
4083 | ||
4084 | arg->type = PRINT_ATOM; | |
0dbca1e3 ACM |
4085 | |
4086 | if (asprintf(&arg->atom.atom, "%lld", ip) < 0) | |
4087 | goto out_free; | |
f7d82350 | 4088 | |
bbedb179 | 4089 | /* skip the first "%ps: " */ |
0883d9d7 | 4090 | for (ptr = fmt + 5, bptr = data + field->offset; |
f7d82350 SR |
4091 | bptr < data + size && *ptr; ptr++) { |
4092 | int ls = 0; | |
4093 | ||
4094 | if (*ptr == '%') { | |
4095 | process_again: | |
4096 | ptr++; | |
4097 | switch (*ptr) { | |
4098 | case '%': | |
4099 | break; | |
4100 | case 'l': | |
4101 | ls++; | |
4102 | goto process_again; | |
4103 | case 'L': | |
4104 | ls = 2; | |
4105 | goto process_again; | |
4106 | case '0' ... '9': | |
4107 | goto process_again; | |
c2e6dc2b SR |
4108 | case '.': |
4109 | goto process_again; | |
55426296 SRRH |
4110 | case 'z': |
4111 | case 'Z': | |
4112 | ls = 1; | |
4113 | goto process_again; | |
f7d82350 SR |
4114 | case 'p': |
4115 | ls = 1; | |
4116 | /* fall through */ | |
4117 | case 'd': | |
4118 | case 'u': | |
4119 | case 'x': | |
4120 | case 'i': | |
f7d82350 SR |
4121 | switch (ls) { |
4122 | case 0: | |
c2e6dc2b | 4123 | vsize = 4; |
f7d82350 SR |
4124 | break; |
4125 | case 1: | |
c2e6dc2b | 4126 | vsize = pevent->long_size; |
f7d82350 SR |
4127 | break; |
4128 | case 2: | |
c2e6dc2b | 4129 | vsize = 8; |
c9bbabe3 | 4130 | break; |
f7d82350 | 4131 | default: |
c2e6dc2b | 4132 | vsize = ls; /* ? */ |
f7d82350 SR |
4133 | break; |
4134 | } | |
c2e6dc2b SR |
4135 | /* fall through */ |
4136 | case '*': | |
4137 | if (*ptr == '*') | |
4138 | vsize = 4; | |
4139 | ||
4140 | /* the pointers are always 4 bytes aligned */ | |
4141 | bptr = (void *)(((unsigned long)bptr + 3) & | |
4142 | ~3); | |
4143 | val = pevent_read_number(pevent, bptr, vsize); | |
4144 | bptr += vsize; | |
f7d82350 | 4145 | arg = alloc_arg(); |
b1ac754b | 4146 | if (!arg) { |
3388cc3e | 4147 | do_warning_event(event, "%s(%d): not enough memory!", |
b1ac754b NK |
4148 | __func__, __LINE__); |
4149 | goto out_free; | |
4150 | } | |
f7d82350 SR |
4151 | arg->next = NULL; |
4152 | arg->type = PRINT_ATOM; | |
0dbca1e3 ACM |
4153 | if (asprintf(&arg->atom.atom, "%lld", val) < 0) { |
4154 | free(arg); | |
4155 | goto out_free; | |
4156 | } | |
f7d82350 SR |
4157 | *next = arg; |
4158 | next = &arg->next; | |
c2e6dc2b SR |
4159 | /* |
4160 | * The '*' case means that an arg is used as the length. | |
4161 | * We need to continue to figure out for what. | |
4162 | */ | |
4163 | if (*ptr == '*') | |
4164 | goto process_again; | |
4165 | ||
f7d82350 SR |
4166 | break; |
4167 | case 's': | |
4168 | arg = alloc_arg(); | |
b1ac754b | 4169 | if (!arg) { |
3388cc3e | 4170 | do_warning_event(event, "%s(%d): not enough memory!", |
b1ac754b NK |
4171 | __func__, __LINE__); |
4172 | goto out_free; | |
4173 | } | |
f7d82350 SR |
4174 | arg->next = NULL; |
4175 | arg->type = PRINT_BSTRING; | |
4176 | arg->string.string = strdup(bptr); | |
ca63858e | 4177 | if (!arg->string.string) |
a6d2a61a | 4178 | goto out_free; |
f7d82350 SR |
4179 | bptr += strlen(bptr) + 1; |
4180 | *next = arg; | |
4181 | next = &arg->next; | |
4182 | default: | |
4183 | break; | |
4184 | } | |
4185 | } | |
4186 | } | |
4187 | ||
4188 | return args; | |
f7d82350 | 4189 | |
0dbca1e3 ACM |
4190 | out_free: |
4191 | free_args(args); | |
4192 | return NULL; | |
f7d82350 SR |
4193 | } |
4194 | ||
4195 | static char * | |
1d037ca1 IT |
4196 | get_bprint_format(void *data, int size __maybe_unused, |
4197 | struct event_format *event) | |
f7d82350 SR |
4198 | { |
4199 | struct pevent *pevent = event->pevent; | |
4200 | unsigned long long addr; | |
4201 | struct format_field *field; | |
4202 | struct printk_map *printk; | |
4203 | char *format; | |
f7d82350 SR |
4204 | |
4205 | field = pevent->bprint_fmt_field; | |
4206 | ||
4207 | if (!field) { | |
4208 | field = pevent_find_field(event, "fmt"); | |
a6d2a61a | 4209 | if (!field) { |
3388cc3e | 4210 | do_warning_event(event, "can't find format field for binary printk"); |
a6d2a61a ACM |
4211 | return NULL; |
4212 | } | |
f7d82350 SR |
4213 | pevent->bprint_fmt_field = field; |
4214 | } | |
4215 | ||
4216 | addr = pevent_read_number(pevent, data + field->offset, field->size); | |
4217 | ||
4218 | printk = find_printk(pevent, addr); | |
4219 | if (!printk) { | |
0883d9d7 | 4220 | if (asprintf(&format, "%%pf: (NO FORMAT FOUND at %llx)\n", addr) < 0) |
0dbca1e3 | 4221 | return NULL; |
f7d82350 SR |
4222 | return format; |
4223 | } | |
4224 | ||
0883d9d7 | 4225 | if (asprintf(&format, "%s: %s", "%pf", printk->printk) < 0) |
0dbca1e3 | 4226 | return NULL; |
f7d82350 SR |
4227 | |
4228 | return format; | |
4229 | } | |
4230 | ||
4231 | static void print_mac_arg(struct trace_seq *s, int mac, void *data, int size, | |
4232 | struct event_format *event, struct print_arg *arg) | |
4233 | { | |
4234 | unsigned char *buf; | |
27f94d52 | 4235 | const char *fmt = "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x"; |
f7d82350 SR |
4236 | |
4237 | if (arg->type == PRINT_FUNC) { | |
4238 | process_defined_func(s, data, size, event, arg); | |
4239 | return; | |
4240 | } | |
4241 | ||
4242 | if (arg->type != PRINT_FIELD) { | |
4243 | trace_seq_printf(s, "ARG TYPE NOT FIELD BUT %d", | |
4244 | arg->type); | |
4245 | return; | |
4246 | } | |
4247 | ||
4248 | if (mac == 'm') | |
4249 | fmt = "%.2x%.2x%.2x%.2x%.2x%.2x"; | |
4250 | if (!arg->field.field) { | |
4251 | arg->field.field = | |
4252 | pevent_find_any_field(event, arg->field.name); | |
a6d2a61a | 4253 | if (!arg->field.field) { |
3388cc3e NK |
4254 | do_warning_event(event, "%s: field %s not found", |
4255 | __func__, arg->field.name); | |
a6d2a61a ACM |
4256 | return; |
4257 | } | |
f7d82350 SR |
4258 | } |
4259 | if (arg->field.field->size != 6) { | |
4260 | trace_seq_printf(s, "INVALIDMAC"); | |
4261 | return; | |
4262 | } | |
4263 | buf = data + arg->field.field->offset; | |
4264 | trace_seq_printf(s, fmt, buf[0], buf[1], buf[2], buf[3], buf[4], buf[5]); | |
4265 | } | |
4266 | ||
3d199b5b DA |
4267 | static void print_ip4_addr(struct trace_seq *s, char i, unsigned char *buf) |
4268 | { | |
4269 | const char *fmt; | |
4270 | ||
4271 | if (i == 'i') | |
4272 | fmt = "%03d.%03d.%03d.%03d"; | |
4273 | else | |
4274 | fmt = "%d.%d.%d.%d"; | |
4275 | ||
4276 | trace_seq_printf(s, fmt, buf[0], buf[1], buf[2], buf[3]); | |
4277 | } | |
4278 | ||
4279 | static inline bool ipv6_addr_v4mapped(const struct in6_addr *a) | |
4280 | { | |
4281 | return ((unsigned long)(a->s6_addr32[0] | a->s6_addr32[1]) | | |
4282 | (unsigned long)(a->s6_addr32[2] ^ htonl(0x0000ffff))) == 0UL; | |
4283 | } | |
4284 | ||
4285 | static inline bool ipv6_addr_is_isatap(const struct in6_addr *addr) | |
4286 | { | |
4287 | return (addr->s6_addr32[2] | htonl(0x02000000)) == htonl(0x02005EFE); | |
4288 | } | |
4289 | ||
4290 | static void print_ip6c_addr(struct trace_seq *s, unsigned char *addr) | |
4291 | { | |
4292 | int i, j, range; | |
4293 | unsigned char zerolength[8]; | |
4294 | int longest = 1; | |
4295 | int colonpos = -1; | |
4296 | uint16_t word; | |
4297 | uint8_t hi, lo; | |
4298 | bool needcolon = false; | |
4299 | bool useIPv4; | |
4300 | struct in6_addr in6; | |
4301 | ||
4302 | memcpy(&in6, addr, sizeof(struct in6_addr)); | |
4303 | ||
4304 | useIPv4 = ipv6_addr_v4mapped(&in6) || ipv6_addr_is_isatap(&in6); | |
4305 | ||
4306 | memset(zerolength, 0, sizeof(zerolength)); | |
4307 | ||
4308 | if (useIPv4) | |
4309 | range = 6; | |
4310 | else | |
4311 | range = 8; | |
4312 | ||
4313 | /* find position of longest 0 run */ | |
4314 | for (i = 0; i < range; i++) { | |
4315 | for (j = i; j < range; j++) { | |
4316 | if (in6.s6_addr16[j] != 0) | |
4317 | break; | |
4318 | zerolength[i]++; | |
4319 | } | |
4320 | } | |
4321 | for (i = 0; i < range; i++) { | |
4322 | if (zerolength[i] > longest) { | |
4323 | longest = zerolength[i]; | |
4324 | colonpos = i; | |
4325 | } | |
4326 | } | |
4327 | if (longest == 1) /* don't compress a single 0 */ | |
4328 | colonpos = -1; | |
4329 | ||
4330 | /* emit address */ | |
4331 | for (i = 0; i < range; i++) { | |
4332 | if (i == colonpos) { | |
4333 | if (needcolon || i == 0) | |
4334 | trace_seq_printf(s, ":"); | |
4335 | trace_seq_printf(s, ":"); | |
4336 | needcolon = false; | |
4337 | i += longest - 1; | |
4338 | continue; | |
4339 | } | |
4340 | if (needcolon) { | |
4341 | trace_seq_printf(s, ":"); | |
4342 | needcolon = false; | |
4343 | } | |
4344 | /* hex u16 without leading 0s */ | |
4345 | word = ntohs(in6.s6_addr16[i]); | |
4346 | hi = word >> 8; | |
4347 | lo = word & 0xff; | |
4348 | if (hi) | |
4349 | trace_seq_printf(s, "%x%02x", hi, lo); | |
4350 | else | |
4351 | trace_seq_printf(s, "%x", lo); | |
4352 | ||
4353 | needcolon = true; | |
4354 | } | |
4355 | ||
4356 | if (useIPv4) { | |
4357 | if (needcolon) | |
4358 | trace_seq_printf(s, ":"); | |
4359 | print_ip4_addr(s, 'I', &in6.s6_addr[12]); | |
4360 | } | |
4361 | ||
4362 | return; | |
4363 | } | |
4364 | ||
4365 | static void print_ip6_addr(struct trace_seq *s, char i, unsigned char *buf) | |
4366 | { | |
4367 | int j; | |
4368 | ||
4369 | for (j = 0; j < 16; j += 2) { | |
4370 | trace_seq_printf(s, "%02x%02x", buf[j], buf[j+1]); | |
4371 | if (i == 'I' && j < 14) | |
4372 | trace_seq_printf(s, ":"); | |
4373 | } | |
4374 | } | |
4375 | ||
4376 | /* | |
4377 | * %pi4 print an IPv4 address with leading zeros | |
4378 | * %pI4 print an IPv4 address without leading zeros | |
4379 | * %pi6 print an IPv6 address without colons | |
4380 | * %pI6 print an IPv6 address with colons | |
4381 | * %pI6c print an IPv6 address in compressed form with colons | |
4382 | * %pISpc print an IP address based on sockaddr; p adds port. | |
4383 | */ | |
4384 | static int print_ipv4_arg(struct trace_seq *s, const char *ptr, char i, | |
4385 | void *data, int size, struct event_format *event, | |
4386 | struct print_arg *arg) | |
4387 | { | |
4388 | unsigned char *buf; | |
4389 | ||
4390 | if (arg->type == PRINT_FUNC) { | |
4391 | process_defined_func(s, data, size, event, arg); | |
4392 | return 0; | |
4393 | } | |
4394 | ||
4395 | if (arg->type != PRINT_FIELD) { | |
4396 | trace_seq_printf(s, "ARG TYPE NOT FIELD BUT %d", arg->type); | |
4397 | return 0; | |
4398 | } | |
4399 | ||
4400 | if (!arg->field.field) { | |
4401 | arg->field.field = | |
4402 | pevent_find_any_field(event, arg->field.name); | |
4403 | if (!arg->field.field) { | |
4404 | do_warning("%s: field %s not found", | |
4405 | __func__, arg->field.name); | |
4406 | return 0; | |
4407 | } | |
4408 | } | |
4409 | ||
4410 | buf = data + arg->field.field->offset; | |
4411 | ||
4412 | if (arg->field.field->size != 4) { | |
4413 | trace_seq_printf(s, "INVALIDIPv4"); | |
4414 | return 0; | |
4415 | } | |
4416 | print_ip4_addr(s, i, buf); | |
4417 | ||
4418 | return 0; | |
4419 | } | |
4420 | ||
4421 | static int print_ipv6_arg(struct trace_seq *s, const char *ptr, char i, | |
4422 | void *data, int size, struct event_format *event, | |
4423 | struct print_arg *arg) | |
4424 | { | |
4425 | char have_c = 0; | |
4426 | unsigned char *buf; | |
4427 | int rc = 0; | |
4428 | ||
4429 | /* pI6c */ | |
4430 | if (i == 'I' && *ptr == 'c') { | |
4431 | have_c = 1; | |
4432 | ptr++; | |
4433 | rc++; | |
4434 | } | |
4435 | ||
4436 | if (arg->type == PRINT_FUNC) { | |
4437 | process_defined_func(s, data, size, event, arg); | |
4438 | return rc; | |
4439 | } | |
4440 | ||
4441 | if (arg->type != PRINT_FIELD) { | |
4442 | trace_seq_printf(s, "ARG TYPE NOT FIELD BUT %d", arg->type); | |
4443 | return rc; | |
4444 | } | |
4445 | ||
4446 | if (!arg->field.field) { | |
4447 | arg->field.field = | |
4448 | pevent_find_any_field(event, arg->field.name); | |
4449 | if (!arg->field.field) { | |
4450 | do_warning("%s: field %s not found", | |
4451 | __func__, arg->field.name); | |
4452 | return rc; | |
4453 | } | |
4454 | } | |
4455 | ||
4456 | buf = data + arg->field.field->offset; | |
4457 | ||
4458 | if (arg->field.field->size != 16) { | |
4459 | trace_seq_printf(s, "INVALIDIPv6"); | |
4460 | return rc; | |
4461 | } | |
4462 | ||
4463 | if (have_c) | |
4464 | print_ip6c_addr(s, buf); | |
4465 | else | |
4466 | print_ip6_addr(s, i, buf); | |
4467 | ||
4468 | return rc; | |
4469 | } | |
4470 | ||
4471 | static int print_ipsa_arg(struct trace_seq *s, const char *ptr, char i, | |
4472 | void *data, int size, struct event_format *event, | |
4473 | struct print_arg *arg) | |
4474 | { | |
4475 | char have_c = 0, have_p = 0; | |
4476 | unsigned char *buf; | |
4477 | struct sockaddr_storage *sa; | |
4478 | int rc = 0; | |
4479 | ||
4480 | /* pISpc */ | |
4481 | if (i == 'I') { | |
4482 | if (*ptr == 'p') { | |
4483 | have_p = 1; | |
4484 | ptr++; | |
4485 | rc++; | |
4486 | } | |
4487 | if (*ptr == 'c') { | |
4488 | have_c = 1; | |
4489 | ptr++; | |
4490 | rc++; | |
4491 | } | |
4492 | } | |
4493 | ||
4494 | if (arg->type == PRINT_FUNC) { | |
4495 | process_defined_func(s, data, size, event, arg); | |
4496 | return rc; | |
4497 | } | |
4498 | ||
4499 | if (arg->type != PRINT_FIELD) { | |
4500 | trace_seq_printf(s, "ARG TYPE NOT FIELD BUT %d", arg->type); | |
4501 | return rc; | |
4502 | } | |
4503 | ||
4504 | if (!arg->field.field) { | |
4505 | arg->field.field = | |
4506 | pevent_find_any_field(event, arg->field.name); | |
4507 | if (!arg->field.field) { | |
4508 | do_warning("%s: field %s not found", | |
4509 | __func__, arg->field.name); | |
4510 | return rc; | |
4511 | } | |
4512 | } | |
4513 | ||
4514 | sa = (struct sockaddr_storage *) (data + arg->field.field->offset); | |
4515 | ||
4516 | if (sa->ss_family == AF_INET) { | |
4517 | struct sockaddr_in *sa4 = (struct sockaddr_in *) sa; | |
4518 | ||
4519 | if (arg->field.field->size < sizeof(struct sockaddr_in)) { | |
4520 | trace_seq_printf(s, "INVALIDIPv4"); | |
4521 | return rc; | |
4522 | } | |
4523 | ||
4524 | print_ip4_addr(s, i, (unsigned char *) &sa4->sin_addr); | |
4525 | if (have_p) | |
4526 | trace_seq_printf(s, ":%d", ntohs(sa4->sin_port)); | |
4527 | ||
4528 | ||
4529 | } else if (sa->ss_family == AF_INET6) { | |
4530 | struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *) sa; | |
4531 | ||
4532 | if (arg->field.field->size < sizeof(struct sockaddr_in6)) { | |
4533 | trace_seq_printf(s, "INVALIDIPv6"); | |
4534 | return rc; | |
4535 | } | |
4536 | ||
4537 | if (have_p) | |
4538 | trace_seq_printf(s, "["); | |
4539 | ||
4540 | buf = (unsigned char *) &sa6->sin6_addr; | |
4541 | if (have_c) | |
4542 | print_ip6c_addr(s, buf); | |
4543 | else | |
4544 | print_ip6_addr(s, i, buf); | |
4545 | ||
4546 | if (have_p) | |
4547 | trace_seq_printf(s, "]:%d", ntohs(sa6->sin6_port)); | |
4548 | } | |
4549 | ||
4550 | return rc; | |
4551 | } | |
4552 | ||
4553 | static int print_ip_arg(struct trace_seq *s, const char *ptr, | |
4554 | void *data, int size, struct event_format *event, | |
4555 | struct print_arg *arg) | |
4556 | { | |
4557 | char i = *ptr; /* 'i' or 'I' */ | |
4558 | char ver; | |
4559 | int rc = 0; | |
4560 | ||
4561 | ptr++; | |
4562 | rc++; | |
4563 | ||
4564 | ver = *ptr; | |
4565 | ptr++; | |
4566 | rc++; | |
4567 | ||
4568 | switch (ver) { | |
4569 | case '4': | |
4570 | rc += print_ipv4_arg(s, ptr, i, data, size, event, arg); | |
4571 | break; | |
4572 | case '6': | |
4573 | rc += print_ipv6_arg(s, ptr, i, data, size, event, arg); | |
4574 | break; | |
4575 | case 'S': | |
4576 | rc += print_ipsa_arg(s, ptr, i, data, size, event, arg); | |
4577 | break; | |
4578 | default: | |
4579 | return 0; | |
4580 | } | |
4581 | ||
4582 | return rc; | |
4583 | } | |
4584 | ||
600da3cf NK |
4585 | static int is_printable_array(char *p, unsigned int len) |
4586 | { | |
4587 | unsigned int i; | |
4588 | ||
4589 | for (i = 0; i < len && p[i]; i++) | |
5efb9fbd | 4590 | if (!isprint(p[i]) && !isspace(p[i])) |
600da3cf NK |
4591 | return 0; |
4592 | return 1; | |
4593 | } | |
4594 | ||
ca383a4d ACM |
4595 | static void print_event_fields(struct trace_seq *s, void *data, |
4596 | int size __maybe_unused, | |
f7d82350 SR |
4597 | struct event_format *event) |
4598 | { | |
4599 | struct format_field *field; | |
4600 | unsigned long long val; | |
4601 | unsigned int offset, len, i; | |
4602 | ||
4603 | field = event->format.fields; | |
4604 | while (field) { | |
4605 | trace_seq_printf(s, " %s=", field->name); | |
4606 | if (field->flags & FIELD_IS_ARRAY) { | |
4607 | offset = field->offset; | |
4608 | len = field->size; | |
4609 | if (field->flags & FIELD_IS_DYNAMIC) { | |
4610 | val = pevent_read_number(event->pevent, data + offset, len); | |
4611 | offset = val; | |
4612 | len = offset >> 16; | |
4613 | offset &= 0xffff; | |
4614 | } | |
600da3cf NK |
4615 | if (field->flags & FIELD_IS_STRING && |
4616 | is_printable_array(data + offset, len)) { | |
f7d82350 SR |
4617 | trace_seq_printf(s, "%s", (char *)data + offset); |
4618 | } else { | |
4619 | trace_seq_puts(s, "ARRAY["); | |
4620 | for (i = 0; i < len; i++) { | |
4621 | if (i) | |
4622 | trace_seq_puts(s, ", "); | |
4623 | trace_seq_printf(s, "%02x", | |
4624 | *((unsigned char *)data + offset + i)); | |
4625 | } | |
4626 | trace_seq_putc(s, ']'); | |
600da3cf | 4627 | field->flags &= ~FIELD_IS_STRING; |
f7d82350 SR |
4628 | } |
4629 | } else { | |
4630 | val = pevent_read_number(event->pevent, data + field->offset, | |
4631 | field->size); | |
4632 | if (field->flags & FIELD_IS_POINTER) { | |
4633 | trace_seq_printf(s, "0x%llx", val); | |
4634 | } else if (field->flags & FIELD_IS_SIGNED) { | |
4635 | switch (field->size) { | |
4636 | case 4: | |
4637 | /* | |
4638 | * If field is long then print it in hex. | |
4639 | * A long usually stores pointers. | |
4640 | */ | |
4641 | if (field->flags & FIELD_IS_LONG) | |
4642 | trace_seq_printf(s, "0x%x", (int)val); | |
4643 | else | |
4644 | trace_seq_printf(s, "%d", (int)val); | |
4645 | break; | |
4646 | case 2: | |
4647 | trace_seq_printf(s, "%2d", (short)val); | |
4648 | break; | |
4649 | case 1: | |
4650 | trace_seq_printf(s, "%1d", (char)val); | |
4651 | break; | |
4652 | default: | |
4653 | trace_seq_printf(s, "%lld", val); | |
4654 | } | |
4655 | } else { | |
4656 | if (field->flags & FIELD_IS_LONG) | |
4657 | trace_seq_printf(s, "0x%llx", val); | |
4658 | else | |
4659 | trace_seq_printf(s, "%llu", val); | |
4660 | } | |
4661 | } | |
4662 | field = field->next; | |
4663 | } | |
4664 | } | |
4665 | ||
4666 | static void pretty_print(struct trace_seq *s, void *data, int size, struct event_format *event) | |
4667 | { | |
4668 | struct pevent *pevent = event->pevent; | |
4669 | struct print_fmt *print_fmt = &event->print_fmt; | |
4670 | struct print_arg *arg = print_fmt->args; | |
4671 | struct print_arg *args = NULL; | |
4672 | const char *ptr = print_fmt->format; | |
4673 | unsigned long long val; | |
4674 | struct func_map *func; | |
4675 | const char *saveptr; | |
12e55569 | 4676 | struct trace_seq p; |
f7d82350 SR |
4677 | char *bprint_fmt = NULL; |
4678 | char format[32]; | |
4679 | int show_func; | |
4680 | int len_as_arg; | |
4681 | int len_arg; | |
4682 | int len; | |
4683 | int ls; | |
4684 | ||
4685 | if (event->flags & EVENT_FL_FAILED) { | |
4686 | trace_seq_printf(s, "[FAILED TO PARSE]"); | |
4687 | print_event_fields(s, data, size, event); | |
4688 | return; | |
4689 | } | |
4690 | ||
4691 | if (event->flags & EVENT_FL_ISBPRINT) { | |
4692 | bprint_fmt = get_bprint_format(data, size, event); | |
4693 | args = make_bprint_args(bprint_fmt, data, size, event); | |
4694 | arg = args; | |
4695 | ptr = bprint_fmt; | |
4696 | } | |
4697 | ||
4698 | for (; *ptr; ptr++) { | |
4699 | ls = 0; | |
4700 | if (*ptr == '\\') { | |
4701 | ptr++; | |
4702 | switch (*ptr) { | |
4703 | case 'n': | |
4704 | trace_seq_putc(s, '\n'); | |
4705 | break; | |
4706 | case 't': | |
4707 | trace_seq_putc(s, '\t'); | |
4708 | break; | |
4709 | case 'r': | |
4710 | trace_seq_putc(s, '\r'); | |
4711 | break; | |
4712 | case '\\': | |
4713 | trace_seq_putc(s, '\\'); | |
4714 | break; | |
4715 | default: | |
4716 | trace_seq_putc(s, *ptr); | |
4717 | break; | |
4718 | } | |
4719 | ||
4720 | } else if (*ptr == '%') { | |
4721 | saveptr = ptr; | |
4722 | show_func = 0; | |
4723 | len_as_arg = 0; | |
4724 | cont_process: | |
4725 | ptr++; | |
4726 | switch (*ptr) { | |
4727 | case '%': | |
4728 | trace_seq_putc(s, '%'); | |
4729 | break; | |
4730 | case '#': | |
4731 | /* FIXME: need to handle properly */ | |
4732 | goto cont_process; | |
4733 | case 'h': | |
4734 | ls--; | |
4735 | goto cont_process; | |
4736 | case 'l': | |
4737 | ls++; | |
4738 | goto cont_process; | |
4739 | case 'L': | |
4740 | ls = 2; | |
4741 | goto cont_process; | |
4742 | case '*': | |
4743 | /* The argument is the length. */ | |
245c5a18 | 4744 | if (!arg) { |
3388cc3e | 4745 | do_warning_event(event, "no argument match"); |
245c5a18 NK |
4746 | event->flags |= EVENT_FL_FAILED; |
4747 | goto out_failed; | |
4748 | } | |
f7d82350 SR |
4749 | len_arg = eval_num_arg(data, size, event, arg); |
4750 | len_as_arg = 1; | |
4751 | arg = arg->next; | |
4752 | goto cont_process; | |
4753 | case '.': | |
4754 | case 'z': | |
4755 | case 'Z': | |
4756 | case '0' ... '9': | |
4757 | goto cont_process; | |
4758 | case 'p': | |
4759 | if (pevent->long_size == 4) | |
4760 | ls = 1; | |
4761 | else | |
4762 | ls = 2; | |
4763 | ||
4764 | if (*(ptr+1) == 'F' || | |
4765 | *(ptr+1) == 'f') { | |
4766 | ptr++; | |
4767 | show_func = *ptr; | |
4768 | } else if (*(ptr+1) == 'M' || *(ptr+1) == 'm') { | |
4769 | print_mac_arg(s, *(ptr+1), data, size, event, arg); | |
4770 | ptr++; | |
aaf05c72 | 4771 | arg = arg->next; |
f7d82350 | 4772 | break; |
3d199b5b DA |
4773 | } else if (*(ptr+1) == 'I' || *(ptr+1) == 'i') { |
4774 | int n; | |
4775 | ||
4776 | n = print_ip_arg(s, ptr+1, data, size, event, arg); | |
4777 | if (n > 0) { | |
4778 | ptr += n; | |
4779 | arg = arg->next; | |
4780 | break; | |
4781 | } | |
f7d82350 SR |
4782 | } |
4783 | ||
4784 | /* fall through */ | |
4785 | case 'd': | |
4786 | case 'i': | |
4787 | case 'x': | |
4788 | case 'X': | |
4789 | case 'u': | |
245c5a18 | 4790 | if (!arg) { |
3388cc3e | 4791 | do_warning_event(event, "no argument match"); |
245c5a18 NK |
4792 | event->flags |= EVENT_FL_FAILED; |
4793 | goto out_failed; | |
4794 | } | |
f7d82350 SR |
4795 | |
4796 | len = ((unsigned long)ptr + 1) - | |
4797 | (unsigned long)saveptr; | |
4798 | ||
4799 | /* should never happen */ | |
245c5a18 | 4800 | if (len > 31) { |
3388cc3e | 4801 | do_warning_event(event, "bad format!"); |
245c5a18 NK |
4802 | event->flags |= EVENT_FL_FAILED; |
4803 | len = 31; | |
4804 | } | |
f7d82350 SR |
4805 | |
4806 | memcpy(format, saveptr, len); | |
4807 | format[len] = 0; | |
4808 | ||
4809 | val = eval_num_arg(data, size, event, arg); | |
4810 | arg = arg->next; | |
4811 | ||
4812 | if (show_func) { | |
4813 | func = find_func(pevent, val); | |
4814 | if (func) { | |
4815 | trace_seq_puts(s, func->func); | |
4816 | if (show_func == 'F') | |
4817 | trace_seq_printf(s, | |
4818 | "+0x%llx", | |
4819 | val - func->addr); | |
4820 | break; | |
4821 | } | |
4822 | } | |
c5b35b73 WM |
4823 | if (pevent->long_size == 8 && ls && |
4824 | sizeof(long) != 8) { | |
f7d82350 SR |
4825 | char *p; |
4826 | ||
4827 | ls = 2; | |
4828 | /* make %l into %ll */ | |
4829 | p = strchr(format, 'l'); | |
4830 | if (p) | |
c5b35b73 | 4831 | memmove(p+1, p, strlen(p)+1); |
f7d82350 SR |
4832 | else if (strcmp(format, "%p") == 0) |
4833 | strcpy(format, "0x%llx"); | |
4834 | } | |
4835 | switch (ls) { | |
4836 | case -2: | |
4837 | if (len_as_arg) | |
4838 | trace_seq_printf(s, format, len_arg, (char)val); | |
4839 | else | |
4840 | trace_seq_printf(s, format, (char)val); | |
4841 | break; | |
4842 | case -1: | |
4843 | if (len_as_arg) | |
4844 | trace_seq_printf(s, format, len_arg, (short)val); | |
4845 | else | |
4846 | trace_seq_printf(s, format, (short)val); | |
4847 | break; | |
4848 | case 0: | |
4849 | if (len_as_arg) | |
4850 | trace_seq_printf(s, format, len_arg, (int)val); | |
4851 | else | |
4852 | trace_seq_printf(s, format, (int)val); | |
4853 | break; | |
4854 | case 1: | |
4855 | if (len_as_arg) | |
4856 | trace_seq_printf(s, format, len_arg, (long)val); | |
4857 | else | |
4858 | trace_seq_printf(s, format, (long)val); | |
4859 | break; | |
4860 | case 2: | |
4861 | if (len_as_arg) | |
4862 | trace_seq_printf(s, format, len_arg, | |
4863 | (long long)val); | |
4864 | else | |
4865 | trace_seq_printf(s, format, (long long)val); | |
4866 | break; | |
4867 | default: | |
3388cc3e | 4868 | do_warning_event(event, "bad count (%d)", ls); |
245c5a18 | 4869 | event->flags |= EVENT_FL_FAILED; |
f7d82350 SR |
4870 | } |
4871 | break; | |
4872 | case 's': | |
245c5a18 | 4873 | if (!arg) { |
3388cc3e | 4874 | do_warning_event(event, "no matching argument"); |
245c5a18 NK |
4875 | event->flags |= EVENT_FL_FAILED; |
4876 | goto out_failed; | |
4877 | } | |
f7d82350 SR |
4878 | |
4879 | len = ((unsigned long)ptr + 1) - | |
4880 | (unsigned long)saveptr; | |
4881 | ||
4882 | /* should never happen */ | |
245c5a18 | 4883 | if (len > 31) { |
3388cc3e | 4884 | do_warning_event(event, "bad format!"); |
245c5a18 NK |
4885 | event->flags |= EVENT_FL_FAILED; |
4886 | len = 31; | |
4887 | } | |
f7d82350 SR |
4888 | |
4889 | memcpy(format, saveptr, len); | |
4890 | format[len] = 0; | |
4891 | if (!len_as_arg) | |
4892 | len_arg = -1; | |
12e55569 SR |
4893 | /* Use helper trace_seq */ |
4894 | trace_seq_init(&p); | |
4895 | print_str_arg(&p, data, size, event, | |
f7d82350 | 4896 | format, len_arg, arg); |
12e55569 SR |
4897 | trace_seq_terminate(&p); |
4898 | trace_seq_puts(s, p.buffer); | |
de04f865 | 4899 | trace_seq_destroy(&p); |
f7d82350 SR |
4900 | arg = arg->next; |
4901 | break; | |
4902 | default: | |
4903 | trace_seq_printf(s, ">%c<", *ptr); | |
4904 | ||
4905 | } | |
4906 | } else | |
4907 | trace_seq_putc(s, *ptr); | |
4908 | } | |
4909 | ||
245c5a18 NK |
4910 | if (event->flags & EVENT_FL_FAILED) { |
4911 | out_failed: | |
4912 | trace_seq_printf(s, "[FAILED TO PARSE]"); | |
4913 | } | |
4914 | ||
f7d82350 SR |
4915 | if (args) { |
4916 | free_args(args); | |
4917 | free(bprint_fmt); | |
4918 | } | |
4919 | } | |
4920 | ||
4921 | /** | |
4922 | * pevent_data_lat_fmt - parse the data for the latency format | |
4923 | * @pevent: a handle to the pevent | |
4924 | * @s: the trace_seq to write to | |
16e6b8fd | 4925 | * @record: the record to read from |
f7d82350 SR |
4926 | * |
4927 | * This parses out the Latency format (interrupts disabled, | |
4928 | * need rescheduling, in hard/soft interrupt, preempt count | |
4929 | * and lock depth) and places it into the trace_seq. | |
4930 | */ | |
4931 | void pevent_data_lat_fmt(struct pevent *pevent, | |
1c698186 | 4932 | struct trace_seq *s, struct pevent_record *record) |
f7d82350 SR |
4933 | { |
4934 | static int check_lock_depth = 1; | |
0866a97e | 4935 | static int check_migrate_disable = 1; |
f7d82350 | 4936 | static int lock_depth_exists; |
0866a97e | 4937 | static int migrate_disable_exists; |
f7d82350 SR |
4938 | unsigned int lat_flags; |
4939 | unsigned int pc; | |
4940 | int lock_depth; | |
0866a97e | 4941 | int migrate_disable; |
f7d82350 SR |
4942 | int hardirq; |
4943 | int softirq; | |
4944 | void *data = record->data; | |
4945 | ||
4946 | lat_flags = parse_common_flags(pevent, data); | |
4947 | pc = parse_common_pc(pevent, data); | |
4948 | /* lock_depth may not always exist */ | |
f7d82350 SR |
4949 | if (lock_depth_exists) |
4950 | lock_depth = parse_common_lock_depth(pevent, data); | |
0866a97e SR |
4951 | else if (check_lock_depth) { |
4952 | lock_depth = parse_common_lock_depth(pevent, data); | |
4953 | if (lock_depth < 0) | |
4954 | check_lock_depth = 0; | |
4955 | else | |
4956 | lock_depth_exists = 1; | |
4957 | } | |
4958 | ||
4959 | /* migrate_disable may not always exist */ | |
4960 | if (migrate_disable_exists) | |
4961 | migrate_disable = parse_common_migrate_disable(pevent, data); | |
4962 | else if (check_migrate_disable) { | |
4963 | migrate_disable = parse_common_migrate_disable(pevent, data); | |
4964 | if (migrate_disable < 0) | |
4965 | check_migrate_disable = 0; | |
4966 | else | |
4967 | migrate_disable_exists = 1; | |
4968 | } | |
f7d82350 SR |
4969 | |
4970 | hardirq = lat_flags & TRACE_FLAG_HARDIRQ; | |
4971 | softirq = lat_flags & TRACE_FLAG_SOFTIRQ; | |
4972 | ||
4973 | trace_seq_printf(s, "%c%c%c", | |
4974 | (lat_flags & TRACE_FLAG_IRQS_OFF) ? 'd' : | |
4975 | (lat_flags & TRACE_FLAG_IRQS_NOSUPPORT) ? | |
4976 | 'X' : '.', | |
4977 | (lat_flags & TRACE_FLAG_NEED_RESCHED) ? | |
4978 | 'N' : '.', | |
4979 | (hardirq && softirq) ? 'H' : | |
4980 | hardirq ? 'h' : softirq ? 's' : '.'); | |
4981 | ||
4982 | if (pc) | |
4983 | trace_seq_printf(s, "%x", pc); | |
4984 | else | |
4985 | trace_seq_putc(s, '.'); | |
4986 | ||
0866a97e SR |
4987 | if (migrate_disable_exists) { |
4988 | if (migrate_disable < 0) | |
4989 | trace_seq_putc(s, '.'); | |
4990 | else | |
4991 | trace_seq_printf(s, "%d", migrate_disable); | |
4992 | } | |
4993 | ||
f7d82350 SR |
4994 | if (lock_depth_exists) { |
4995 | if (lock_depth < 0) | |
4996 | trace_seq_putc(s, '.'); | |
4997 | else | |
4998 | trace_seq_printf(s, "%d", lock_depth); | |
4999 | } | |
5000 | ||
5001 | trace_seq_terminate(s); | |
5002 | } | |
5003 | ||
5004 | /** | |
5005 | * pevent_data_type - parse out the given event type | |
5006 | * @pevent: a handle to the pevent | |
5007 | * @rec: the record to read from | |
5008 | * | |
5009 | * This returns the event id from the @rec. | |
5010 | */ | |
1c698186 | 5011 | int pevent_data_type(struct pevent *pevent, struct pevent_record *rec) |
f7d82350 SR |
5012 | { |
5013 | return trace_parse_common_type(pevent, rec->data); | |
5014 | } | |
5015 | ||
5016 | /** | |
5017 | * pevent_data_event_from_type - find the event by a given type | |
5018 | * @pevent: a handle to the pevent | |
5019 | * @type: the type of the event. | |
5020 | * | |
5021 | * This returns the event form a given @type; | |
5022 | */ | |
5023 | struct event_format *pevent_data_event_from_type(struct pevent *pevent, int type) | |
5024 | { | |
5025 | return pevent_find_event(pevent, type); | |
5026 | } | |
5027 | ||
5028 | /** | |
5029 | * pevent_data_pid - parse the PID from raw data | |
5030 | * @pevent: a handle to the pevent | |
5031 | * @rec: the record to parse | |
5032 | * | |
5033 | * This returns the PID from a raw data. | |
5034 | */ | |
1c698186 | 5035 | int pevent_data_pid(struct pevent *pevent, struct pevent_record *rec) |
f7d82350 SR |
5036 | { |
5037 | return parse_common_pid(pevent, rec->data); | |
5038 | } | |
5039 | ||
5040 | /** | |
5041 | * pevent_data_comm_from_pid - return the command line from PID | |
5042 | * @pevent: a handle to the pevent | |
5043 | * @pid: the PID of the task to search for | |
5044 | * | |
5045 | * This returns a pointer to the command line that has the given | |
5046 | * @pid. | |
5047 | */ | |
5048 | const char *pevent_data_comm_from_pid(struct pevent *pevent, int pid) | |
5049 | { | |
5050 | const char *comm; | |
5051 | ||
5052 | comm = find_cmdline(pevent, pid); | |
5053 | return comm; | |
5054 | } | |
5055 | ||
2771984c SRRH |
5056 | static struct cmdline * |
5057 | pid_from_cmdlist(struct pevent *pevent, const char *comm, struct cmdline *next) | |
5058 | { | |
5059 | struct cmdline_list *cmdlist = (struct cmdline_list *)next; | |
5060 | ||
5061 | if (cmdlist) | |
5062 | cmdlist = cmdlist->next; | |
5063 | else | |
5064 | cmdlist = pevent->cmdlist; | |
5065 | ||
5066 | while (cmdlist && strcmp(cmdlist->comm, comm) != 0) | |
5067 | cmdlist = cmdlist->next; | |
5068 | ||
5069 | return (struct cmdline *)cmdlist; | |
5070 | } | |
5071 | ||
5072 | /** | |
5073 | * pevent_data_pid_from_comm - return the pid from a given comm | |
5074 | * @pevent: a handle to the pevent | |
5075 | * @comm: the cmdline to find the pid from | |
5076 | * @next: the cmdline structure to find the next comm | |
5077 | * | |
5078 | * This returns the cmdline structure that holds a pid for a given | |
5079 | * comm, or NULL if none found. As there may be more than one pid for | |
5080 | * a given comm, the result of this call can be passed back into | |
5081 | * a recurring call in the @next paramater, and then it will find the | |
5082 | * next pid. | |
5083 | * Also, it does a linear seach, so it may be slow. | |
5084 | */ | |
5085 | struct cmdline *pevent_data_pid_from_comm(struct pevent *pevent, const char *comm, | |
5086 | struct cmdline *next) | |
5087 | { | |
5088 | struct cmdline *cmdline; | |
5089 | ||
5090 | /* | |
5091 | * If the cmdlines have not been converted yet, then use | |
5092 | * the list. | |
5093 | */ | |
5094 | if (!pevent->cmdlines) | |
5095 | return pid_from_cmdlist(pevent, comm, next); | |
5096 | ||
5097 | if (next) { | |
5098 | /* | |
5099 | * The next pointer could have been still from | |
5100 | * a previous call before cmdlines were created | |
5101 | */ | |
5102 | if (next < pevent->cmdlines || | |
5103 | next >= pevent->cmdlines + pevent->cmdline_count) | |
5104 | next = NULL; | |
5105 | else | |
5106 | cmdline = next++; | |
5107 | } | |
5108 | ||
5109 | if (!next) | |
5110 | cmdline = pevent->cmdlines; | |
5111 | ||
5112 | while (cmdline < pevent->cmdlines + pevent->cmdline_count) { | |
5113 | if (strcmp(cmdline->comm, comm) == 0) | |
5114 | return cmdline; | |
5115 | cmdline++; | |
5116 | } | |
5117 | return NULL; | |
5118 | } | |
5119 | ||
5120 | /** | |
5121 | * pevent_cmdline_pid - return the pid associated to a given cmdline | |
5122 | * @cmdline: The cmdline structure to get the pid from | |
5123 | * | |
5124 | * Returns the pid for a give cmdline. If @cmdline is NULL, then | |
5125 | * -1 is returned. | |
5126 | */ | |
5127 | int pevent_cmdline_pid(struct pevent *pevent, struct cmdline *cmdline) | |
5128 | { | |
5129 | struct cmdline_list *cmdlist = (struct cmdline_list *)cmdline; | |
5130 | ||
5131 | if (!cmdline) | |
5132 | return -1; | |
5133 | ||
5134 | /* | |
5135 | * If cmdlines have not been created yet, or cmdline is | |
5136 | * not part of the array, then treat it as a cmdlist instead. | |
5137 | */ | |
5138 | if (!pevent->cmdlines || | |
5139 | cmdline < pevent->cmdlines || | |
5140 | cmdline >= pevent->cmdlines + pevent->cmdline_count) | |
5141 | return cmdlist->pid; | |
5142 | ||
5143 | return cmdline->pid; | |
5144 | } | |
5145 | ||
f7d82350 SR |
5146 | /** |
5147 | * pevent_data_comm_from_pid - parse the data into the print format | |
5148 | * @s: the trace_seq to write to | |
5149 | * @event: the handle to the event | |
16e6b8fd | 5150 | * @record: the record to read from |
f7d82350 SR |
5151 | * |
5152 | * This parses the raw @data using the given @event information and | |
5153 | * writes the print format into the trace_seq. | |
5154 | */ | |
5155 | void pevent_event_info(struct trace_seq *s, struct event_format *event, | |
1c698186 | 5156 | struct pevent_record *record) |
f7d82350 SR |
5157 | { |
5158 | int print_pretty = 1; | |
5159 | ||
c6c2b960 | 5160 | if (event->pevent->print_raw || (event->flags & EVENT_FL_PRINTRAW)) |
f7d82350 SR |
5161 | print_event_fields(s, record->data, record->size, event); |
5162 | else { | |
5163 | ||
c6c2b960 | 5164 | if (event->handler && !(event->flags & EVENT_FL_NOHANDLE)) |
f7d82350 SR |
5165 | print_pretty = event->handler(s, record, event, |
5166 | event->context); | |
5167 | ||
5168 | if (print_pretty) | |
5169 | pretty_print(s, record->data, record->size, event); | |
5170 | } | |
5171 | ||
5172 | trace_seq_terminate(s); | |
5173 | } | |
5174 | ||
1b372ca5 YY |
5175 | static bool is_timestamp_in_us(char *trace_clock, bool use_trace_clock) |
5176 | { | |
5177 | if (!use_trace_clock) | |
5178 | return true; | |
5179 | ||
5180 | if (!strcmp(trace_clock, "local") || !strcmp(trace_clock, "global") | |
5181 | || !strcmp(trace_clock, "uptime") || !strcmp(trace_clock, "perf")) | |
5182 | return true; | |
5183 | ||
5184 | /* trace_clock is setting in tsc or counter mode */ | |
5185 | return false; | |
5186 | } | |
5187 | ||
f7d82350 | 5188 | void pevent_print_event(struct pevent *pevent, struct trace_seq *s, |
1b372ca5 | 5189 | struct pevent_record *record, bool use_trace_clock) |
f7d82350 | 5190 | { |
27f94d52 | 5191 | static const char *spaces = " "; /* 20 spaces */ |
f7d82350 SR |
5192 | struct event_format *event; |
5193 | unsigned long secs; | |
5194 | unsigned long usecs; | |
4dc1024a | 5195 | unsigned long nsecs; |
f7d82350 SR |
5196 | const char *comm; |
5197 | void *data = record->data; | |
5198 | int type; | |
5199 | int pid; | |
5200 | int len; | |
4dc1024a | 5201 | int p; |
1b372ca5 | 5202 | bool use_usec_format; |
f7d82350 | 5203 | |
1b372ca5 YY |
5204 | use_usec_format = is_timestamp_in_us(pevent->trace_clock, |
5205 | use_trace_clock); | |
5206 | if (use_usec_format) { | |
5207 | secs = record->ts / NSECS_PER_SEC; | |
5208 | nsecs = record->ts - secs * NSECS_PER_SEC; | |
5209 | } | |
f7d82350 SR |
5210 | |
5211 | if (record->size < 0) { | |
5212 | do_warning("ug! negative record size %d", record->size); | |
5213 | return; | |
5214 | } | |
5215 | ||
5216 | type = trace_parse_common_type(pevent, data); | |
5217 | ||
5218 | event = pevent_find_event(pevent, type); | |
5219 | if (!event) { | |
5220 | do_warning("ug! no event found for type %d", type); | |
5221 | return; | |
5222 | } | |
5223 | ||
5224 | pid = parse_common_pid(pevent, data); | |
5225 | comm = find_cmdline(pevent, pid); | |
5226 | ||
5227 | if (pevent->latency_format) { | |
5228 | trace_seq_printf(s, "%8.8s-%-5d %3d", | |
5229 | comm, pid, record->cpu); | |
5230 | pevent_data_lat_fmt(pevent, s, record); | |
5231 | } else | |
5232 | trace_seq_printf(s, "%16s-%-5d [%03d]", comm, pid, record->cpu); | |
5233 | ||
1b372ca5 YY |
5234 | if (use_usec_format) { |
5235 | if (pevent->flags & PEVENT_NSEC_OUTPUT) { | |
5236 | usecs = nsecs; | |
5237 | p = 9; | |
5238 | } else { | |
5239 | usecs = (nsecs + 500) / NSECS_PER_USEC; | |
5240 | p = 6; | |
5241 | } | |
4dc1024a | 5242 | |
1b372ca5 YY |
5243 | trace_seq_printf(s, " %5lu.%0*lu: %s: ", |
5244 | secs, p, usecs, event->name); | |
5245 | } else | |
5246 | trace_seq_printf(s, " %12llu: %s: ", | |
5247 | record->ts, event->name); | |
f7d82350 SR |
5248 | |
5249 | /* Space out the event names evenly. */ | |
5250 | len = strlen(event->name); | |
5251 | if (len < 20) | |
5252 | trace_seq_printf(s, "%.*s", 20 - len, spaces); | |
5253 | ||
5254 | pevent_event_info(s, event, record); | |
5255 | } | |
5256 | ||
5257 | static int events_id_cmp(const void *a, const void *b) | |
5258 | { | |
5259 | struct event_format * const * ea = a; | |
5260 | struct event_format * const * eb = b; | |
5261 | ||
5262 | if ((*ea)->id < (*eb)->id) | |
5263 | return -1; | |
5264 | ||
5265 | if ((*ea)->id > (*eb)->id) | |
5266 | return 1; | |
5267 | ||
5268 | return 0; | |
5269 | } | |
5270 | ||
5271 | static int events_name_cmp(const void *a, const void *b) | |
5272 | { | |
5273 | struct event_format * const * ea = a; | |
5274 | struct event_format * const * eb = b; | |
5275 | int res; | |
5276 | ||
5277 | res = strcmp((*ea)->name, (*eb)->name); | |
5278 | if (res) | |
5279 | return res; | |
5280 | ||
5281 | res = strcmp((*ea)->system, (*eb)->system); | |
5282 | if (res) | |
5283 | return res; | |
5284 | ||
5285 | return events_id_cmp(a, b); | |
5286 | } | |
5287 | ||
5288 | static int events_system_cmp(const void *a, const void *b) | |
5289 | { | |
5290 | struct event_format * const * ea = a; | |
5291 | struct event_format * const * eb = b; | |
5292 | int res; | |
5293 | ||
5294 | res = strcmp((*ea)->system, (*eb)->system); | |
5295 | if (res) | |
5296 | return res; | |
5297 | ||
5298 | res = strcmp((*ea)->name, (*eb)->name); | |
5299 | if (res) | |
5300 | return res; | |
5301 | ||
5302 | return events_id_cmp(a, b); | |
5303 | } | |
5304 | ||
5305 | struct event_format **pevent_list_events(struct pevent *pevent, enum event_sort_type sort_type) | |
5306 | { | |
5307 | struct event_format **events; | |
5308 | int (*sort)(const void *a, const void *b); | |
5309 | ||
5310 | events = pevent->sort_events; | |
5311 | ||
5312 | if (events && pevent->last_type == sort_type) | |
5313 | return events; | |
5314 | ||
5315 | if (!events) { | |
5316 | events = malloc(sizeof(*events) * (pevent->nr_events + 1)); | |
5317 | if (!events) | |
5318 | return NULL; | |
5319 | ||
5320 | memcpy(events, pevent->events, sizeof(*events) * pevent->nr_events); | |
5321 | events[pevent->nr_events] = NULL; | |
5322 | ||
5323 | pevent->sort_events = events; | |
5324 | ||
5325 | /* the internal events are sorted by id */ | |
5326 | if (sort_type == EVENT_SORT_ID) { | |
5327 | pevent->last_type = sort_type; | |
5328 | return events; | |
5329 | } | |
5330 | } | |
5331 | ||
5332 | switch (sort_type) { | |
5333 | case EVENT_SORT_ID: | |
5334 | sort = events_id_cmp; | |
5335 | break; | |
5336 | case EVENT_SORT_NAME: | |
5337 | sort = events_name_cmp; | |
5338 | break; | |
5339 | case EVENT_SORT_SYSTEM: | |
5340 | sort = events_system_cmp; | |
5341 | break; | |
5342 | default: | |
5343 | return events; | |
5344 | } | |
5345 | ||
5346 | qsort(events, pevent->nr_events, sizeof(*events), sort); | |
5347 | pevent->last_type = sort_type; | |
5348 | ||
5349 | return events; | |
5350 | } | |
5351 | ||
5352 | static struct format_field ** | |
5353 | get_event_fields(const char *type, const char *name, | |
5354 | int count, struct format_field *list) | |
5355 | { | |
5356 | struct format_field **fields; | |
5357 | struct format_field *field; | |
5358 | int i = 0; | |
5359 | ||
a6d2a61a ACM |
5360 | fields = malloc(sizeof(*fields) * (count + 1)); |
5361 | if (!fields) | |
5362 | return NULL; | |
5363 | ||
f7d82350 SR |
5364 | for (field = list; field; field = field->next) { |
5365 | fields[i++] = field; | |
5366 | if (i == count + 1) { | |
5367 | do_warning("event %s has more %s fields than specified", | |
5368 | name, type); | |
5369 | i--; | |
5370 | break; | |
5371 | } | |
5372 | } | |
5373 | ||
5374 | if (i != count) | |
5375 | do_warning("event %s has less %s fields than specified", | |
5376 | name, type); | |
5377 | ||
5378 | fields[i] = NULL; | |
5379 | ||
5380 | return fields; | |
5381 | } | |
5382 | ||
5383 | /** | |
5384 | * pevent_event_common_fields - return a list of common fields for an event | |
5385 | * @event: the event to return the common fields of. | |
5386 | * | |
5387 | * Returns an allocated array of fields. The last item in the array is NULL. | |
5388 | * The array must be freed with free(). | |
5389 | */ | |
5390 | struct format_field **pevent_event_common_fields(struct event_format *event) | |
5391 | { | |
5392 | return get_event_fields("common", event->name, | |
5393 | event->format.nr_common, | |
5394 | event->format.common_fields); | |
5395 | } | |
5396 | ||
5397 | /** | |
5398 | * pevent_event_fields - return a list of event specific fields for an event | |
5399 | * @event: the event to return the fields of. | |
5400 | * | |
5401 | * Returns an allocated array of fields. The last item in the array is NULL. | |
5402 | * The array must be freed with free(). | |
5403 | */ | |
5404 | struct format_field **pevent_event_fields(struct event_format *event) | |
5405 | { | |
5406 | return get_event_fields("event", event->name, | |
5407 | event->format.nr_fields, | |
5408 | event->format.fields); | |
5409 | } | |
5410 | ||
5411 | static void print_fields(struct trace_seq *s, struct print_flag_sym *field) | |
5412 | { | |
5413 | trace_seq_printf(s, "{ %s, %s }", field->value, field->str); | |
5414 | if (field->next) { | |
5415 | trace_seq_puts(s, ", "); | |
5416 | print_fields(s, field->next); | |
5417 | } | |
5418 | } | |
5419 | ||
5420 | /* for debugging */ | |
5421 | static void print_args(struct print_arg *args) | |
5422 | { | |
5423 | int print_paren = 1; | |
5424 | struct trace_seq s; | |
5425 | ||
5426 | switch (args->type) { | |
5427 | case PRINT_NULL: | |
5428 | printf("null"); | |
5429 | break; | |
5430 | case PRINT_ATOM: | |
5431 | printf("%s", args->atom.atom); | |
5432 | break; | |
5433 | case PRINT_FIELD: | |
5434 | printf("REC->%s", args->field.name); | |
5435 | break; | |
5436 | case PRINT_FLAGS: | |
5437 | printf("__print_flags("); | |
5438 | print_args(args->flags.field); | |
5439 | printf(", %s, ", args->flags.delim); | |
5440 | trace_seq_init(&s); | |
5441 | print_fields(&s, args->flags.flags); | |
5442 | trace_seq_do_printf(&s); | |
5443 | trace_seq_destroy(&s); | |
5444 | printf(")"); | |
5445 | break; | |
5446 | case PRINT_SYMBOL: | |
5447 | printf("__print_symbolic("); | |
5448 | print_args(args->symbol.field); | |
5449 | printf(", "); | |
5450 | trace_seq_init(&s); | |
5451 | print_fields(&s, args->symbol.symbols); | |
5452 | trace_seq_do_printf(&s); | |
5453 | trace_seq_destroy(&s); | |
5454 | printf(")"); | |
5455 | break; | |
e080e6f1 NK |
5456 | case PRINT_HEX: |
5457 | printf("__print_hex("); | |
5458 | print_args(args->hex.field); | |
5459 | printf(", "); | |
5460 | print_args(args->hex.size); | |
5461 | printf(")"); | |
5462 | break; | |
b839e1e8 JM |
5463 | case PRINT_INT_ARRAY: |
5464 | printf("__print_array("); | |
5465 | print_args(args->int_array.field); | |
5466 | printf(", "); | |
5467 | print_args(args->int_array.count); | |
5468 | printf(", "); | |
5469 | print_args(args->int_array.el_size); | |
5470 | printf(")"); | |
5471 | break; | |
f7d82350 SR |
5472 | case PRINT_STRING: |
5473 | case PRINT_BSTRING: | |
5474 | printf("__get_str(%s)", args->string.string); | |
5475 | break; | |
473a778a SRRH |
5476 | case PRINT_BITMASK: |
5477 | printf("__get_bitmask(%s)", args->bitmask.bitmask); | |
5478 | break; | |
f7d82350 SR |
5479 | case PRINT_TYPE: |
5480 | printf("(%s)", args->typecast.type); | |
5481 | print_args(args->typecast.item); | |
5482 | break; | |
5483 | case PRINT_OP: | |
5484 | if (strcmp(args->op.op, ":") == 0) | |
5485 | print_paren = 0; | |
5486 | if (print_paren) | |
5487 | printf("("); | |
5488 | print_args(args->op.left); | |
5489 | printf(" %s ", args->op.op); | |
5490 | print_args(args->op.right); | |
5491 | if (print_paren) | |
5492 | printf(")"); | |
5493 | break; | |
5494 | default: | |
5495 | /* we should warn... */ | |
5496 | return; | |
5497 | } | |
5498 | if (args->next) { | |
5499 | printf("\n"); | |
5500 | print_args(args->next); | |
5501 | } | |
5502 | } | |
5503 | ||
5504 | static void parse_header_field(const char *field, | |
5505 | int *offset, int *size, int mandatory) | |
5506 | { | |
5507 | unsigned long long save_input_buf_ptr; | |
5508 | unsigned long long save_input_buf_siz; | |
5509 | char *token; | |
5510 | int type; | |
5511 | ||
5512 | save_input_buf_ptr = input_buf_ptr; | |
5513 | save_input_buf_siz = input_buf_siz; | |
5514 | ||
5515 | if (read_expected(EVENT_ITEM, "field") < 0) | |
5516 | return; | |
5517 | if (read_expected(EVENT_OP, ":") < 0) | |
5518 | return; | |
5519 | ||
5520 | /* type */ | |
5521 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
5522 | goto fail; | |
5523 | free_token(token); | |
5524 | ||
5525 | /* | |
5526 | * If this is not a mandatory field, then test it first. | |
5527 | */ | |
5528 | if (mandatory) { | |
5529 | if (read_expected(EVENT_ITEM, field) < 0) | |
5530 | return; | |
5531 | } else { | |
5532 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
5533 | goto fail; | |
5534 | if (strcmp(token, field) != 0) | |
5535 | goto discard; | |
5536 | free_token(token); | |
5537 | } | |
5538 | ||
5539 | if (read_expected(EVENT_OP, ";") < 0) | |
5540 | return; | |
5541 | if (read_expected(EVENT_ITEM, "offset") < 0) | |
5542 | return; | |
5543 | if (read_expected(EVENT_OP, ":") < 0) | |
5544 | return; | |
5545 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
5546 | goto fail; | |
5547 | *offset = atoi(token); | |
5548 | free_token(token); | |
5549 | if (read_expected(EVENT_OP, ";") < 0) | |
5550 | return; | |
5551 | if (read_expected(EVENT_ITEM, "size") < 0) | |
5552 | return; | |
5553 | if (read_expected(EVENT_OP, ":") < 0) | |
5554 | return; | |
5555 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
5556 | goto fail; | |
5557 | *size = atoi(token); | |
5558 | free_token(token); | |
5559 | if (read_expected(EVENT_OP, ";") < 0) | |
5560 | return; | |
5561 | type = read_token(&token); | |
5562 | if (type != EVENT_NEWLINE) { | |
5563 | /* newer versions of the kernel have a "signed" type */ | |
5564 | if (type != EVENT_ITEM) | |
5565 | goto fail; | |
5566 | ||
5567 | if (strcmp(token, "signed") != 0) | |
5568 | goto fail; | |
5569 | ||
5570 | free_token(token); | |
5571 | ||
5572 | if (read_expected(EVENT_OP, ":") < 0) | |
5573 | return; | |
5574 | ||
5575 | if (read_expect_type(EVENT_ITEM, &token)) | |
5576 | goto fail; | |
5577 | ||
5578 | free_token(token); | |
5579 | if (read_expected(EVENT_OP, ";") < 0) | |
5580 | return; | |
5581 | ||
5582 | if (read_expect_type(EVENT_NEWLINE, &token)) | |
5583 | goto fail; | |
5584 | } | |
5585 | fail: | |
5586 | free_token(token); | |
5587 | return; | |
5588 | ||
5589 | discard: | |
5590 | input_buf_ptr = save_input_buf_ptr; | |
5591 | input_buf_siz = save_input_buf_siz; | |
5592 | *offset = 0; | |
5593 | *size = 0; | |
5594 | free_token(token); | |
5595 | } | |
5596 | ||
5597 | /** | |
5598 | * pevent_parse_header_page - parse the data stored in the header page | |
5599 | * @pevent: the handle to the pevent | |
5600 | * @buf: the buffer storing the header page format string | |
5601 | * @size: the size of @buf | |
5602 | * @long_size: the long size to use if there is no header | |
5603 | * | |
5604 | * This parses the header page format for information on the | |
5605 | * ring buffer used. The @buf should be copied from | |
5606 | * | |
5607 | * /sys/kernel/debug/tracing/events/header_page | |
5608 | */ | |
5609 | int pevent_parse_header_page(struct pevent *pevent, char *buf, unsigned long size, | |
5610 | int long_size) | |
5611 | { | |
5612 | int ignore; | |
5613 | ||
5614 | if (!size) { | |
5615 | /* | |
5616 | * Old kernels did not have header page info. | |
5617 | * Sorry but we just use what we find here in user space. | |
5618 | */ | |
5619 | pevent->header_page_ts_size = sizeof(long long); | |
5620 | pevent->header_page_size_size = long_size; | |
5621 | pevent->header_page_data_offset = sizeof(long long) + long_size; | |
5622 | pevent->old_format = 1; | |
5623 | return -1; | |
5624 | } | |
5625 | init_input_buf(buf, size); | |
5626 | ||
5627 | parse_header_field("timestamp", &pevent->header_page_ts_offset, | |
5628 | &pevent->header_page_ts_size, 1); | |
5629 | parse_header_field("commit", &pevent->header_page_size_offset, | |
5630 | &pevent->header_page_size_size, 1); | |
5631 | parse_header_field("overwrite", &pevent->header_page_overwrite, | |
5632 | &ignore, 0); | |
5633 | parse_header_field("data", &pevent->header_page_data_offset, | |
5634 | &pevent->header_page_data_size, 1); | |
5635 | ||
5636 | return 0; | |
5637 | } | |
5638 | ||
5639 | static int event_matches(struct event_format *event, | |
5640 | int id, const char *sys_name, | |
5641 | const char *event_name) | |
5642 | { | |
5643 | if (id >= 0 && id != event->id) | |
5644 | return 0; | |
5645 | ||
5646 | if (event_name && (strcmp(event_name, event->name) != 0)) | |
5647 | return 0; | |
5648 | ||
5649 | if (sys_name && (strcmp(sys_name, event->system) != 0)) | |
5650 | return 0; | |
5651 | ||
5652 | return 1; | |
5653 | } | |
5654 | ||
5655 | static void free_handler(struct event_handler *handle) | |
5656 | { | |
5657 | free((void *)handle->sys_name); | |
5658 | free((void *)handle->event_name); | |
5659 | free(handle); | |
5660 | } | |
5661 | ||
5662 | static int find_event_handle(struct pevent *pevent, struct event_format *event) | |
5663 | { | |
5664 | struct event_handler *handle, **next; | |
5665 | ||
5666 | for (next = &pevent->handlers; *next; | |
5667 | next = &(*next)->next) { | |
5668 | handle = *next; | |
5669 | if (event_matches(event, handle->id, | |
5670 | handle->sys_name, | |
5671 | handle->event_name)) | |
5672 | break; | |
5673 | } | |
5674 | ||
5675 | if (!(*next)) | |
5676 | return 0; | |
5677 | ||
5678 | pr_stat("overriding event (%d) %s:%s with new print handler", | |
5679 | event->id, event->system, event->name); | |
5680 | ||
5681 | event->handler = handle->func; | |
5682 | event->context = handle->context; | |
5683 | ||
5684 | *next = handle->next; | |
5685 | free_handler(handle); | |
5686 | ||
5687 | return 1; | |
5688 | } | |
5689 | ||
5690 | /** | |
2b29175d | 5691 | * __pevent_parse_format - parse the event format |
f7d82350 SR |
5692 | * @buf: the buffer storing the event format string |
5693 | * @size: the size of @buf | |
5694 | * @sys: the system the event belongs to | |
5695 | * | |
5696 | * This parses the event format and creates an event structure | |
5697 | * to quickly parse raw data for a given event. | |
5698 | * | |
5699 | * These files currently come from: | |
5700 | * | |
5701 | * /sys/kernel/debug/tracing/events/.../.../format | |
5702 | */ | |
2b29175d ACM |
5703 | enum pevent_errno __pevent_parse_format(struct event_format **eventp, |
5704 | struct pevent *pevent, const char *buf, | |
5705 | unsigned long size, const char *sys) | |
f7d82350 SR |
5706 | { |
5707 | struct event_format *event; | |
5708 | int ret; | |
5709 | ||
5710 | init_input_buf(buf, size); | |
5711 | ||
2b29175d | 5712 | *eventp = event = alloc_event(); |
f7d82350 | 5713 | if (!event) |
bffddffd | 5714 | return PEVENT_ERRNO__MEM_ALLOC_FAILED; |
f7d82350 SR |
5715 | |
5716 | event->name = event_read_name(); | |
5717 | if (!event->name) { | |
5718 | /* Bad event? */ | |
bffddffd NK |
5719 | ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; |
5720 | goto event_alloc_failed; | |
f7d82350 SR |
5721 | } |
5722 | ||
5723 | if (strcmp(sys, "ftrace") == 0) { | |
f7d82350 SR |
5724 | event->flags |= EVENT_FL_ISFTRACE; |
5725 | ||
5726 | if (strcmp(event->name, "bprint") == 0) | |
5727 | event->flags |= EVENT_FL_ISBPRINT; | |
5728 | } | |
5729 | ||
5730 | event->id = event_read_id(); | |
bffddffd NK |
5731 | if (event->id < 0) { |
5732 | ret = PEVENT_ERRNO__READ_ID_FAILED; | |
5733 | /* | |
5734 | * This isn't an allocation error actually. | |
5735 | * But as the ID is critical, just bail out. | |
5736 | */ | |
5737 | goto event_alloc_failed; | |
5738 | } | |
f7d82350 SR |
5739 | |
5740 | event->system = strdup(sys); | |
bffddffd NK |
5741 | if (!event->system) { |
5742 | ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
5743 | goto event_alloc_failed; | |
5744 | } | |
f7d82350 | 5745 | |
101782ea SR |
5746 | /* Add pevent to event so that it can be referenced */ |
5747 | event->pevent = pevent; | |
5748 | ||
f7d82350 SR |
5749 | ret = event_read_format(event); |
5750 | if (ret < 0) { | |
bffddffd NK |
5751 | ret = PEVENT_ERRNO__READ_FORMAT_FAILED; |
5752 | goto event_parse_failed; | |
f7d82350 SR |
5753 | } |
5754 | ||
5755 | /* | |
5756 | * If the event has an override, don't print warnings if the event | |
5757 | * print format fails to parse. | |
5758 | */ | |
2b29175d | 5759 | if (pevent && find_event_handle(pevent, event)) |
f7d82350 SR |
5760 | show_warning = 0; |
5761 | ||
5762 | ret = event_read_print(event); | |
2b29175d ACM |
5763 | show_warning = 1; |
5764 | ||
f7d82350 | 5765 | if (ret < 0) { |
bffddffd NK |
5766 | ret = PEVENT_ERRNO__READ_PRINT_FAILED; |
5767 | goto event_parse_failed; | |
f7d82350 | 5768 | } |
f7d82350 SR |
5769 | |
5770 | if (!ret && (event->flags & EVENT_FL_ISFTRACE)) { | |
5771 | struct format_field *field; | |
5772 | struct print_arg *arg, **list; | |
5773 | ||
5774 | /* old ftrace had no args */ | |
f7d82350 SR |
5775 | list = &event->print_fmt.args; |
5776 | for (field = event->format.fields; field; field = field->next) { | |
5777 | arg = alloc_arg(); | |
b1ac754b NK |
5778 | if (!arg) { |
5779 | event->flags |= EVENT_FL_FAILED; | |
5780 | return PEVENT_ERRNO__OLD_FTRACE_ARG_FAILED; | |
5781 | } | |
f7d82350 SR |
5782 | arg->type = PRINT_FIELD; |
5783 | arg->field.name = strdup(field->name); | |
ca63858e | 5784 | if (!arg->field.name) { |
4b5632bc | 5785 | event->flags |= EVENT_FL_FAILED; |
fd34f0b2 | 5786 | free_arg(arg); |
bffddffd | 5787 | return PEVENT_ERRNO__OLD_FTRACE_ARG_FAILED; |
ca63858e | 5788 | } |
f7d82350 | 5789 | arg->field.field = field; |
fd34f0b2 NK |
5790 | *list = arg; |
5791 | list = &arg->next; | |
f7d82350 SR |
5792 | } |
5793 | return 0; | |
5794 | } | |
5795 | ||
f7d82350 SR |
5796 | return 0; |
5797 | ||
bffddffd | 5798 | event_parse_failed: |
f7d82350 | 5799 | event->flags |= EVENT_FL_FAILED; |
bffddffd NK |
5800 | return ret; |
5801 | ||
5802 | event_alloc_failed: | |
2b29175d ACM |
5803 | free(event->system); |
5804 | free(event->name); | |
5805 | free(event); | |
5806 | *eventp = NULL; | |
5807 | return ret; | |
5808 | } | |
5809 | ||
71ad9583 JO |
5810 | static enum pevent_errno |
5811 | __pevent_parse_event(struct pevent *pevent, | |
5812 | struct event_format **eventp, | |
5813 | const char *buf, unsigned long size, | |
5814 | const char *sys) | |
5815 | { | |
5816 | int ret = __pevent_parse_format(eventp, pevent, buf, size, sys); | |
5817 | struct event_format *event = *eventp; | |
5818 | ||
5819 | if (event == NULL) | |
5820 | return ret; | |
5821 | ||
5822 | if (pevent && add_event(pevent, event)) { | |
5823 | ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
5824 | goto event_add_failed; | |
5825 | } | |
5826 | ||
5827 | #define PRINT_ARGS 0 | |
5828 | if (PRINT_ARGS && event->print_fmt.args) | |
5829 | print_args(event->print_fmt.args); | |
5830 | ||
5831 | return 0; | |
5832 | ||
5833 | event_add_failed: | |
5834 | pevent_free_format(event); | |
5835 | return ret; | |
5836 | } | |
5837 | ||
2b29175d ACM |
5838 | /** |
5839 | * pevent_parse_format - parse the event format | |
71ad9583 JO |
5840 | * @pevent: the handle to the pevent |
5841 | * @eventp: returned format | |
2b29175d ACM |
5842 | * @buf: the buffer storing the event format string |
5843 | * @size: the size of @buf | |
5844 | * @sys: the system the event belongs to | |
5845 | * | |
5846 | * This parses the event format and creates an event structure | |
5847 | * to quickly parse raw data for a given event. | |
5848 | * | |
5849 | * These files currently come from: | |
5850 | * | |
5851 | * /sys/kernel/debug/tracing/events/.../.../format | |
5852 | */ | |
71ad9583 JO |
5853 | enum pevent_errno pevent_parse_format(struct pevent *pevent, |
5854 | struct event_format **eventp, | |
5855 | const char *buf, | |
2b29175d ACM |
5856 | unsigned long size, const char *sys) |
5857 | { | |
71ad9583 | 5858 | return __pevent_parse_event(pevent, eventp, buf, size, sys); |
2b29175d ACM |
5859 | } |
5860 | ||
5861 | /** | |
5862 | * pevent_parse_event - parse the event format | |
5863 | * @pevent: the handle to the pevent | |
5864 | * @buf: the buffer storing the event format string | |
5865 | * @size: the size of @buf | |
5866 | * @sys: the system the event belongs to | |
5867 | * | |
5868 | * This parses the event format and creates an event structure | |
5869 | * to quickly parse raw data for a given event. | |
5870 | * | |
5871 | * These files currently come from: | |
5872 | * | |
5873 | * /sys/kernel/debug/tracing/events/.../.../format | |
5874 | */ | |
5875 | enum pevent_errno pevent_parse_event(struct pevent *pevent, const char *buf, | |
5876 | unsigned long size, const char *sys) | |
5877 | { | |
5878 | struct event_format *event = NULL; | |
71ad9583 | 5879 | return __pevent_parse_event(pevent, &event, buf, size, sys); |
f7d82350 SR |
5880 | } |
5881 | ||
2f197b9d NK |
5882 | #undef _PE |
5883 | #define _PE(code, str) str | |
5884 | static const char * const pevent_error_str[] = { | |
5885 | PEVENT_ERRORS | |
5886 | }; | |
5887 | #undef _PE | |
5888 | ||
ca383a4d ACM |
5889 | int pevent_strerror(struct pevent *pevent __maybe_unused, |
5890 | enum pevent_errno errnum, char *buf, size_t buflen) | |
2f197b9d NK |
5891 | { |
5892 | int idx; | |
5893 | const char *msg; | |
5894 | ||
5895 | if (errnum >= 0) { | |
e1aa7c30 NK |
5896 | msg = strerror_r(errnum, buf, buflen); |
5897 | if (msg != buf) { | |
5898 | size_t len = strlen(msg); | |
9612ef67 IT |
5899 | memcpy(buf, msg, min(buflen - 1, len)); |
5900 | *(buf + min(buflen - 1, len)) = '\0'; | |
e1aa7c30 | 5901 | } |
2f197b9d NK |
5902 | return 0; |
5903 | } | |
5904 | ||
5905 | if (errnum <= __PEVENT_ERRNO__START || | |
5906 | errnum >= __PEVENT_ERRNO__END) | |
5907 | return -1; | |
5908 | ||
f63fe79f | 5909 | idx = errnum - __PEVENT_ERRNO__START - 1; |
2f197b9d | 5910 | msg = pevent_error_str[idx]; |
bf19b82e | 5911 | snprintf(buf, buflen, "%s", msg); |
2f197b9d NK |
5912 | |
5913 | return 0; | |
5914 | } | |
5915 | ||
f7d82350 | 5916 | int get_field_val(struct trace_seq *s, struct format_field *field, |
1c698186 | 5917 | const char *name, struct pevent_record *record, |
f7d82350 SR |
5918 | unsigned long long *val, int err) |
5919 | { | |
5920 | if (!field) { | |
5921 | if (err) | |
5922 | trace_seq_printf(s, "<CANT FIND FIELD %s>", name); | |
5923 | return -1; | |
5924 | } | |
5925 | ||
5926 | if (pevent_read_number_field(field, record->data, val)) { | |
5927 | if (err) | |
5928 | trace_seq_printf(s, " %s=INVALID", name); | |
5929 | return -1; | |
5930 | } | |
5931 | ||
5932 | return 0; | |
5933 | } | |
5934 | ||
5935 | /** | |
5936 | * pevent_get_field_raw - return the raw pointer into the data field | |
5937 | * @s: The seq to print to on error | |
5938 | * @event: the event that the field is for | |
5939 | * @name: The name of the field | |
5940 | * @record: The record with the field name. | |
5941 | * @len: place to store the field length. | |
5942 | * @err: print default error if failed. | |
5943 | * | |
5944 | * Returns a pointer into record->data of the field and places | |
5945 | * the length of the field in @len. | |
5946 | * | |
5947 | * On failure, it returns NULL. | |
5948 | */ | |
5949 | void *pevent_get_field_raw(struct trace_seq *s, struct event_format *event, | |
1c698186 | 5950 | const char *name, struct pevent_record *record, |
f7d82350 SR |
5951 | int *len, int err) |
5952 | { | |
5953 | struct format_field *field; | |
5954 | void *data = record->data; | |
5955 | unsigned offset; | |
5956 | int dummy; | |
5957 | ||
5958 | if (!event) | |
5959 | return NULL; | |
5960 | ||
5961 | field = pevent_find_field(event, name); | |
5962 | ||
5963 | if (!field) { | |
5964 | if (err) | |
5965 | trace_seq_printf(s, "<CANT FIND FIELD %s>", name); | |
5966 | return NULL; | |
5967 | } | |
5968 | ||
5969 | /* Allow @len to be NULL */ | |
5970 | if (!len) | |
5971 | len = &dummy; | |
5972 | ||
5973 | offset = field->offset; | |
5974 | if (field->flags & FIELD_IS_DYNAMIC) { | |
5975 | offset = pevent_read_number(event->pevent, | |
5976 | data + offset, field->size); | |
5977 | *len = offset >> 16; | |
5978 | offset &= 0xffff; | |
5979 | } else | |
5980 | *len = field->size; | |
5981 | ||
5982 | return data + offset; | |
5983 | } | |
5984 | ||
5985 | /** | |
5986 | * pevent_get_field_val - find a field and return its value | |
5987 | * @s: The seq to print to on error | |
5988 | * @event: the event that the field is for | |
5989 | * @name: The name of the field | |
5990 | * @record: The record with the field name. | |
5991 | * @val: place to store the value of the field. | |
5992 | * @err: print default error if failed. | |
5993 | * | |
5994 | * Returns 0 on success -1 on field not found. | |
5995 | */ | |
5996 | int pevent_get_field_val(struct trace_seq *s, struct event_format *event, | |
1c698186 | 5997 | const char *name, struct pevent_record *record, |
f7d82350 SR |
5998 | unsigned long long *val, int err) |
5999 | { | |
6000 | struct format_field *field; | |
6001 | ||
6002 | if (!event) | |
6003 | return -1; | |
6004 | ||
6005 | field = pevent_find_field(event, name); | |
6006 | ||
6007 | return get_field_val(s, field, name, record, val, err); | |
6008 | } | |
6009 | ||
6010 | /** | |
6011 | * pevent_get_common_field_val - find a common field and return its value | |
6012 | * @s: The seq to print to on error | |
6013 | * @event: the event that the field is for | |
6014 | * @name: The name of the field | |
6015 | * @record: The record with the field name. | |
6016 | * @val: place to store the value of the field. | |
6017 | * @err: print default error if failed. | |
6018 | * | |
6019 | * Returns 0 on success -1 on field not found. | |
6020 | */ | |
6021 | int pevent_get_common_field_val(struct trace_seq *s, struct event_format *event, | |
1c698186 | 6022 | const char *name, struct pevent_record *record, |
f7d82350 SR |
6023 | unsigned long long *val, int err) |
6024 | { | |
6025 | struct format_field *field; | |
6026 | ||
6027 | if (!event) | |
6028 | return -1; | |
6029 | ||
6030 | field = pevent_find_common_field(event, name); | |
6031 | ||
6032 | return get_field_val(s, field, name, record, val, err); | |
6033 | } | |
6034 | ||
6035 | /** | |
6036 | * pevent_get_any_field_val - find a any field and return its value | |
6037 | * @s: The seq to print to on error | |
6038 | * @event: the event that the field is for | |
6039 | * @name: The name of the field | |
6040 | * @record: The record with the field name. | |
6041 | * @val: place to store the value of the field. | |
6042 | * @err: print default error if failed. | |
6043 | * | |
6044 | * Returns 0 on success -1 on field not found. | |
6045 | */ | |
6046 | int pevent_get_any_field_val(struct trace_seq *s, struct event_format *event, | |
1c698186 | 6047 | const char *name, struct pevent_record *record, |
f7d82350 SR |
6048 | unsigned long long *val, int err) |
6049 | { | |
6050 | struct format_field *field; | |
6051 | ||
6052 | if (!event) | |
6053 | return -1; | |
6054 | ||
6055 | field = pevent_find_any_field(event, name); | |
6056 | ||
6057 | return get_field_val(s, field, name, record, val, err); | |
6058 | } | |
6059 | ||
6060 | /** | |
6061 | * pevent_print_num_field - print a field and a format | |
6062 | * @s: The seq to print to | |
6063 | * @fmt: The printf format to print the field with. | |
6064 | * @event: the event that the field is for | |
6065 | * @name: The name of the field | |
6066 | * @record: The record with the field name. | |
6067 | * @err: print default error if failed. | |
6068 | * | |
16e6b8fd | 6069 | * Returns: 0 on success, -1 field not found, or 1 if buffer is full. |
f7d82350 SR |
6070 | */ |
6071 | int pevent_print_num_field(struct trace_seq *s, const char *fmt, | |
6072 | struct event_format *event, const char *name, | |
1c698186 | 6073 | struct pevent_record *record, int err) |
f7d82350 SR |
6074 | { |
6075 | struct format_field *field = pevent_find_field(event, name); | |
6076 | unsigned long long val; | |
6077 | ||
6078 | if (!field) | |
6079 | goto failed; | |
6080 | ||
6081 | if (pevent_read_number_field(field, record->data, &val)) | |
6082 | goto failed; | |
6083 | ||
6084 | return trace_seq_printf(s, fmt, val); | |
6085 | ||
6086 | failed: | |
6087 | if (err) | |
6088 | trace_seq_printf(s, "CAN'T FIND FIELD \"%s\"", name); | |
6089 | return -1; | |
6090 | } | |
6091 | ||
6d862b8c SR |
6092 | /** |
6093 | * pevent_print_func_field - print a field and a format for function pointers | |
6094 | * @s: The seq to print to | |
6095 | * @fmt: The printf format to print the field with. | |
6096 | * @event: the event that the field is for | |
6097 | * @name: The name of the field | |
6098 | * @record: The record with the field name. | |
6099 | * @err: print default error if failed. | |
6100 | * | |
6101 | * Returns: 0 on success, -1 field not found, or 1 if buffer is full. | |
6102 | */ | |
6103 | int pevent_print_func_field(struct trace_seq *s, const char *fmt, | |
6104 | struct event_format *event, const char *name, | |
6105 | struct pevent_record *record, int err) | |
6106 | { | |
6107 | struct format_field *field = pevent_find_field(event, name); | |
6108 | struct pevent *pevent = event->pevent; | |
6109 | unsigned long long val; | |
6110 | struct func_map *func; | |
6111 | char tmp[128]; | |
6112 | ||
6113 | if (!field) | |
6114 | goto failed; | |
6115 | ||
6116 | if (pevent_read_number_field(field, record->data, &val)) | |
6117 | goto failed; | |
6118 | ||
6119 | func = find_func(pevent, val); | |
6120 | ||
6121 | if (func) | |
6122 | snprintf(tmp, 128, "%s/0x%llx", func->func, func->addr - val); | |
6123 | else | |
6124 | sprintf(tmp, "0x%08llx", val); | |
6125 | ||
6126 | return trace_seq_printf(s, fmt, tmp); | |
6127 | ||
6128 | failed: | |
6129 | if (err) | |
6130 | trace_seq_printf(s, "CAN'T FIND FIELD \"%s\"", name); | |
6131 | return -1; | |
6132 | } | |
6133 | ||
f7d82350 SR |
6134 | static void free_func_handle(struct pevent_function_handler *func) |
6135 | { | |
6136 | struct pevent_func_params *params; | |
6137 | ||
6138 | free(func->name); | |
6139 | ||
6140 | while (func->params) { | |
6141 | params = func->params; | |
6142 | func->params = params->next; | |
6143 | free(params); | |
6144 | } | |
6145 | ||
6146 | free(func); | |
6147 | } | |
6148 | ||
6149 | /** | |
6150 | * pevent_register_print_function - register a helper function | |
6151 | * @pevent: the handle to the pevent | |
6152 | * @func: the function to process the helper function | |
16e6b8fd | 6153 | * @ret_type: the return type of the helper function |
f7d82350 SR |
6154 | * @name: the name of the helper function |
6155 | * @parameters: A list of enum pevent_func_arg_type | |
6156 | * | |
6157 | * Some events may have helper functions in the print format arguments. | |
16e6b8fd | 6158 | * This allows a plugin to dynamically create a way to process one |
f7d82350 SR |
6159 | * of these functions. |
6160 | * | |
6161 | * The @parameters is a variable list of pevent_func_arg_type enums that | |
6162 | * must end with PEVENT_FUNC_ARG_VOID. | |
6163 | */ | |
6164 | int pevent_register_print_function(struct pevent *pevent, | |
6165 | pevent_func_handler func, | |
6166 | enum pevent_func_arg_type ret_type, | |
6167 | char *name, ...) | |
6168 | { | |
6169 | struct pevent_function_handler *func_handle; | |
6170 | struct pevent_func_params **next_param; | |
6171 | struct pevent_func_params *param; | |
6172 | enum pevent_func_arg_type type; | |
6173 | va_list ap; | |
67ed939c | 6174 | int ret; |
f7d82350 SR |
6175 | |
6176 | func_handle = find_func_handler(pevent, name); | |
6177 | if (func_handle) { | |
6178 | /* | |
6179 | * This is most like caused by the users own | |
6180 | * plugins updating the function. This overrides the | |
6181 | * system defaults. | |
6182 | */ | |
6183 | pr_stat("override of function helper '%s'", name); | |
6184 | remove_func_handler(pevent, name); | |
6185 | } | |
6186 | ||
87162d81 | 6187 | func_handle = calloc(1, sizeof(*func_handle)); |
67ed939c NK |
6188 | if (!func_handle) { |
6189 | do_warning("Failed to allocate function handler"); | |
6190 | return PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
6191 | } | |
f7d82350 SR |
6192 | |
6193 | func_handle->ret_type = ret_type; | |
6194 | func_handle->name = strdup(name); | |
6195 | func_handle->func = func; | |
67ed939c NK |
6196 | if (!func_handle->name) { |
6197 | do_warning("Failed to allocate function name"); | |
6198 | free(func_handle); | |
6199 | return PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
6200 | } | |
f7d82350 SR |
6201 | |
6202 | next_param = &(func_handle->params); | |
6203 | va_start(ap, name); | |
6204 | for (;;) { | |
6205 | type = va_arg(ap, enum pevent_func_arg_type); | |
6206 | if (type == PEVENT_FUNC_ARG_VOID) | |
6207 | break; | |
6208 | ||
e46466b8 | 6209 | if (type >= PEVENT_FUNC_ARG_MAX_TYPES) { |
67ed939c NK |
6210 | do_warning("Invalid argument type %d", type); |
6211 | ret = PEVENT_ERRNO__INVALID_ARG_TYPE; | |
f7d82350 SR |
6212 | goto out_free; |
6213 | } | |
6214 | ||
67ed939c NK |
6215 | param = malloc(sizeof(*param)); |
6216 | if (!param) { | |
6217 | do_warning("Failed to allocate function param"); | |
6218 | ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
6219 | goto out_free; | |
6220 | } | |
f7d82350 SR |
6221 | param->type = type; |
6222 | param->next = NULL; | |
6223 | ||
6224 | *next_param = param; | |
6225 | next_param = &(param->next); | |
6226 | ||
6227 | func_handle->nr_args++; | |
6228 | } | |
6229 | va_end(ap); | |
6230 | ||
6231 | func_handle->next = pevent->func_handlers; | |
6232 | pevent->func_handlers = func_handle; | |
6233 | ||
6234 | return 0; | |
6235 | out_free: | |
6236 | va_end(ap); | |
6237 | free_func_handle(func_handle); | |
67ed939c | 6238 | return ret; |
f7d82350 SR |
6239 | } |
6240 | ||
20c7e5ab NK |
6241 | /** |
6242 | * pevent_unregister_print_function - unregister a helper function | |
6243 | * @pevent: the handle to the pevent | |
6244 | * @func: the function to process the helper function | |
6245 | * @name: the name of the helper function | |
6246 | * | |
6247 | * This function removes existing print handler for function @name. | |
6248 | * | |
6249 | * Returns 0 if the handler was removed successully, -1 otherwise. | |
6250 | */ | |
6251 | int pevent_unregister_print_function(struct pevent *pevent, | |
6252 | pevent_func_handler func, char *name) | |
6253 | { | |
6254 | struct pevent_function_handler *func_handle; | |
6255 | ||
6256 | func_handle = find_func_handler(pevent, name); | |
6257 | if (func_handle && func_handle->func == func) { | |
6258 | remove_func_handler(pevent, name); | |
6259 | return 0; | |
6260 | } | |
6261 | return -1; | |
6262 | } | |
6263 | ||
ad13701d NK |
6264 | static struct event_format *pevent_search_event(struct pevent *pevent, int id, |
6265 | const char *sys_name, | |
6266 | const char *event_name) | |
6267 | { | |
6268 | struct event_format *event; | |
6269 | ||
6270 | if (id >= 0) { | |
6271 | /* search by id */ | |
6272 | event = pevent_find_event(pevent, id); | |
6273 | if (!event) | |
6274 | return NULL; | |
6275 | if (event_name && (strcmp(event_name, event->name) != 0)) | |
6276 | return NULL; | |
6277 | if (sys_name && (strcmp(sys_name, event->system) != 0)) | |
6278 | return NULL; | |
6279 | } else { | |
6280 | event = pevent_find_event_by_name(pevent, sys_name, event_name); | |
6281 | if (!event) | |
6282 | return NULL; | |
6283 | } | |
6284 | return event; | |
6285 | } | |
6286 | ||
f7d82350 | 6287 | /** |
16e6b8fd | 6288 | * pevent_register_event_handler - register a way to parse an event |
f7d82350 SR |
6289 | * @pevent: the handle to the pevent |
6290 | * @id: the id of the event to register | |
6291 | * @sys_name: the system name the event belongs to | |
6292 | * @event_name: the name of the event | |
6293 | * @func: the function to call to parse the event information | |
16e6b8fd | 6294 | * @context: the data to be passed to @func |
f7d82350 SR |
6295 | * |
6296 | * This function allows a developer to override the parsing of | |
6297 | * a given event. If for some reason the default print format | |
6298 | * is not sufficient, this function will register a function | |
6299 | * for an event to be used to parse the data instead. | |
6300 | * | |
6301 | * If @id is >= 0, then it is used to find the event. | |
6302 | * else @sys_name and @event_name are used. | |
6303 | */ | |
79d5adf0 NK |
6304 | int pevent_register_event_handler(struct pevent *pevent, int id, |
6305 | const char *sys_name, const char *event_name, | |
6306 | pevent_event_handler_func func, void *context) | |
f7d82350 SR |
6307 | { |
6308 | struct event_format *event; | |
6309 | struct event_handler *handle; | |
6310 | ||
ad13701d NK |
6311 | event = pevent_search_event(pevent, id, sys_name, event_name); |
6312 | if (event == NULL) | |
6313 | goto not_found; | |
f7d82350 SR |
6314 | |
6315 | pr_stat("overriding event (%d) %s:%s with new print handler", | |
6316 | event->id, event->system, event->name); | |
6317 | ||
6318 | event->handler = func; | |
6319 | event->context = context; | |
6320 | return 0; | |
6321 | ||
6322 | not_found: | |
6323 | /* Save for later use. */ | |
87162d81 | 6324 | handle = calloc(1, sizeof(*handle)); |
0ca8da00 NK |
6325 | if (!handle) { |
6326 | do_warning("Failed to allocate event handler"); | |
6327 | return PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
6328 | } | |
6329 | ||
f7d82350 SR |
6330 | handle->id = id; |
6331 | if (event_name) | |
6332 | handle->event_name = strdup(event_name); | |
6333 | if (sys_name) | |
6334 | handle->sys_name = strdup(sys_name); | |
6335 | ||
ca63858e NK |
6336 | if ((event_name && !handle->event_name) || |
6337 | (sys_name && !handle->sys_name)) { | |
0ca8da00 NK |
6338 | do_warning("Failed to allocate event/sys name"); |
6339 | free((void *)handle->event_name); | |
6340 | free((void *)handle->sys_name); | |
6341 | free(handle); | |
6342 | return PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
ca63858e NK |
6343 | } |
6344 | ||
f7d82350 SR |
6345 | handle->func = func; |
6346 | handle->next = pevent->handlers; | |
6347 | pevent->handlers = handle; | |
6348 | handle->context = context; | |
6349 | ||
6350 | return -1; | |
6351 | } | |
6352 | ||
ad13701d NK |
6353 | static int handle_matches(struct event_handler *handler, int id, |
6354 | const char *sys_name, const char *event_name, | |
6355 | pevent_event_handler_func func, void *context) | |
6356 | { | |
6357 | if (id >= 0 && id != handler->id) | |
6358 | return 0; | |
6359 | ||
6360 | if (event_name && (strcmp(event_name, handler->event_name) != 0)) | |
6361 | return 0; | |
6362 | ||
6363 | if (sys_name && (strcmp(sys_name, handler->sys_name) != 0)) | |
6364 | return 0; | |
6365 | ||
6366 | if (func != handler->func || context != handler->context) | |
6367 | return 0; | |
6368 | ||
6369 | return 1; | |
6370 | } | |
6371 | ||
6372 | /** | |
6373 | * pevent_unregister_event_handler - unregister an existing event handler | |
6374 | * @pevent: the handle to the pevent | |
6375 | * @id: the id of the event to unregister | |
6376 | * @sys_name: the system name the handler belongs to | |
6377 | * @event_name: the name of the event handler | |
6378 | * @func: the function to call to parse the event information | |
6379 | * @context: the data to be passed to @func | |
6380 | * | |
6381 | * This function removes existing event handler (parser). | |
6382 | * | |
6383 | * If @id is >= 0, then it is used to find the event. | |
6384 | * else @sys_name and @event_name are used. | |
6385 | * | |
6386 | * Returns 0 if handler was removed successfully, -1 if event was not found. | |
6387 | */ | |
6388 | int pevent_unregister_event_handler(struct pevent *pevent, int id, | |
6389 | const char *sys_name, const char *event_name, | |
6390 | pevent_event_handler_func func, void *context) | |
6391 | { | |
6392 | struct event_format *event; | |
6393 | struct event_handler *handle; | |
6394 | struct event_handler **next; | |
6395 | ||
6396 | event = pevent_search_event(pevent, id, sys_name, event_name); | |
6397 | if (event == NULL) | |
6398 | goto not_found; | |
6399 | ||
6400 | if (event->handler == func && event->context == context) { | |
6401 | pr_stat("removing override handler for event (%d) %s:%s. Going back to default handler.", | |
6402 | event->id, event->system, event->name); | |
6403 | ||
6404 | event->handler = NULL; | |
6405 | event->context = NULL; | |
6406 | return 0; | |
6407 | } | |
6408 | ||
6409 | not_found: | |
6410 | for (next = &pevent->handlers; *next; next = &(*next)->next) { | |
6411 | handle = *next; | |
6412 | if (handle_matches(handle, id, sys_name, event_name, | |
6413 | func, context)) | |
6414 | break; | |
6415 | } | |
6416 | ||
6417 | if (!(*next)) | |
6418 | return -1; | |
6419 | ||
6420 | *next = handle->next; | |
6421 | free_handler(handle); | |
6422 | ||
6423 | return 0; | |
6424 | } | |
6425 | ||
f7d82350 SR |
6426 | /** |
6427 | * pevent_alloc - create a pevent handle | |
6428 | */ | |
6429 | struct pevent *pevent_alloc(void) | |
6430 | { | |
87162d81 | 6431 | struct pevent *pevent = calloc(1, sizeof(*pevent)); |
f7d82350 | 6432 | |
87162d81 ACM |
6433 | if (pevent) |
6434 | pevent->ref_count = 1; | |
f7d82350 SR |
6435 | |
6436 | return pevent; | |
6437 | } | |
6438 | ||
6439 | void pevent_ref(struct pevent *pevent) | |
6440 | { | |
6441 | pevent->ref_count++; | |
6442 | } | |
6443 | ||
00ae1127 DA |
6444 | void pevent_free_format_field(struct format_field *field) |
6445 | { | |
6446 | free(field->type); | |
6447 | free(field->name); | |
6448 | free(field); | |
6449 | } | |
6450 | ||
f7d82350 SR |
6451 | static void free_format_fields(struct format_field *field) |
6452 | { | |
6453 | struct format_field *next; | |
6454 | ||
6455 | while (field) { | |
6456 | next = field->next; | |
00ae1127 | 6457 | pevent_free_format_field(field); |
f7d82350 SR |
6458 | field = next; |
6459 | } | |
6460 | } | |
6461 | ||
6462 | static void free_formats(struct format *format) | |
6463 | { | |
6464 | free_format_fields(format->common_fields); | |
6465 | free_format_fields(format->fields); | |
6466 | } | |
6467 | ||
2b29175d | 6468 | void pevent_free_format(struct event_format *event) |
f7d82350 SR |
6469 | { |
6470 | free(event->name); | |
6471 | free(event->system); | |
6472 | ||
6473 | free_formats(&event->format); | |
6474 | ||
6475 | free(event->print_fmt.format); | |
6476 | free_args(event->print_fmt.args); | |
6477 | ||
6478 | free(event); | |
6479 | } | |
6480 | ||
6481 | /** | |
6482 | * pevent_free - free a pevent handle | |
6483 | * @pevent: the pevent handle to free | |
6484 | */ | |
6485 | void pevent_free(struct pevent *pevent) | |
6486 | { | |
a2525a08 SR |
6487 | struct cmdline_list *cmdlist, *cmdnext; |
6488 | struct func_list *funclist, *funcnext; | |
6489 | struct printk_list *printklist, *printknext; | |
f7d82350 SR |
6490 | struct pevent_function_handler *func_handler; |
6491 | struct event_handler *handle; | |
6492 | int i; | |
6493 | ||
a2525a08 SR |
6494 | if (!pevent) |
6495 | return; | |
6496 | ||
6497 | cmdlist = pevent->cmdlist; | |
6498 | funclist = pevent->funclist; | |
6499 | printklist = pevent->printklist; | |
6500 | ||
f7d82350 SR |
6501 | pevent->ref_count--; |
6502 | if (pevent->ref_count) | |
6503 | return; | |
6504 | ||
6505 | if (pevent->cmdlines) { | |
6506 | for (i = 0; i < pevent->cmdline_count; i++) | |
6507 | free(pevent->cmdlines[i].comm); | |
6508 | free(pevent->cmdlines); | |
6509 | } | |
6510 | ||
6511 | while (cmdlist) { | |
6512 | cmdnext = cmdlist->next; | |
6513 | free(cmdlist->comm); | |
6514 | free(cmdlist); | |
6515 | cmdlist = cmdnext; | |
6516 | } | |
6517 | ||
6518 | if (pevent->func_map) { | |
8a38cce4 | 6519 | for (i = 0; i < (int)pevent->func_count; i++) { |
f7d82350 SR |
6520 | free(pevent->func_map[i].func); |
6521 | free(pevent->func_map[i].mod); | |
6522 | } | |
6523 | free(pevent->func_map); | |
6524 | } | |
6525 | ||
6526 | while (funclist) { | |
6527 | funcnext = funclist->next; | |
6528 | free(funclist->func); | |
6529 | free(funclist->mod); | |
6530 | free(funclist); | |
6531 | funclist = funcnext; | |
6532 | } | |
6533 | ||
6534 | while (pevent->func_handlers) { | |
6535 | func_handler = pevent->func_handlers; | |
6536 | pevent->func_handlers = func_handler->next; | |
6537 | free_func_handle(func_handler); | |
6538 | } | |
6539 | ||
6540 | if (pevent->printk_map) { | |
8a38cce4 | 6541 | for (i = 0; i < (int)pevent->printk_count; i++) |
f7d82350 SR |
6542 | free(pevent->printk_map[i].printk); |
6543 | free(pevent->printk_map); | |
6544 | } | |
6545 | ||
6546 | while (printklist) { | |
6547 | printknext = printklist->next; | |
6548 | free(printklist->printk); | |
6549 | free(printklist); | |
6550 | printklist = printknext; | |
6551 | } | |
6552 | ||
6553 | for (i = 0; i < pevent->nr_events; i++) | |
2b29175d | 6554 | pevent_free_format(pevent->events[i]); |
f7d82350 SR |
6555 | |
6556 | while (pevent->handlers) { | |
6557 | handle = pevent->handlers; | |
6558 | pevent->handlers = handle->next; | |
6559 | free_handler(handle); | |
6560 | } | |
6561 | ||
99ad1417 | 6562 | free(pevent->trace_clock); |
f7d82350 SR |
6563 | free(pevent->events); |
6564 | free(pevent->sort_events); | |
6565 | ||
6566 | free(pevent); | |
6567 | } | |
6568 | ||
6569 | void pevent_unref(struct pevent *pevent) | |
6570 | { | |
6571 | pevent_free(pevent); | |
6572 | } |