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Commit | Line | Data |
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f7d82350 SR |
1 | /* |
2 | * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com> | |
3 | * | |
4 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
5 | * This program is free software; you can redistribute it and/or | |
6 | * modify it under the terms of the GNU Lesser General Public | |
7 | * License as published by the Free Software Foundation; | |
8 | * version 2.1 of the License (not later!) | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU Lesser General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU Lesser General Public | |
7b9f6b40 | 16 | * License along with this program; if not, see <http://www.gnu.org/licenses> |
f7d82350 SR |
17 | * |
18 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
19 | * | |
20 | * The parts for function graph printing was taken and modified from the | |
21 | * Linux Kernel that were written by | |
22 | * - Copyright (C) 2009 Frederic Weisbecker, | |
23 | * Frederic Weisbecker gave his permission to relicense the code to | |
24 | * the Lesser General Public License. | |
25 | */ | |
f7d82350 SR |
26 | #include <stdio.h> |
27 | #include <stdlib.h> | |
28 | #include <string.h> | |
29 | #include <stdarg.h> | |
30 | #include <ctype.h> | |
31 | #include <errno.h> | |
0cf26013 | 32 | #include <stdint.h> |
a6d2a61a | 33 | #include <limits.h> |
f7d82350 SR |
34 | |
35 | #include "event-parse.h" | |
668fe01f | 36 | #include "event-utils.h" |
f7d82350 SR |
37 | |
38 | static const char *input_buf; | |
39 | static unsigned long long input_buf_ptr; | |
40 | static unsigned long long input_buf_siz; | |
41 | ||
5205aec9 TZ |
42 | static int is_flag_field; |
43 | static int is_symbolic_field; | |
44 | ||
f7d82350 SR |
45 | static int show_warning = 1; |
46 | ||
47 | #define do_warning(fmt, ...) \ | |
48 | do { \ | |
49 | if (show_warning) \ | |
50 | warning(fmt, ##__VA_ARGS__); \ | |
51 | } while (0) | |
52 | ||
53 | static void init_input_buf(const char *buf, unsigned long long size) | |
54 | { | |
55 | input_buf = buf; | |
56 | input_buf_siz = size; | |
57 | input_buf_ptr = 0; | |
58 | } | |
59 | ||
60 | const char *pevent_get_input_buf(void) | |
61 | { | |
62 | return input_buf; | |
63 | } | |
64 | ||
65 | unsigned long long pevent_get_input_buf_ptr(void) | |
66 | { | |
67 | return input_buf_ptr; | |
68 | } | |
69 | ||
70 | struct event_handler { | |
71 | struct event_handler *next; | |
72 | int id; | |
73 | const char *sys_name; | |
74 | const char *event_name; | |
75 | pevent_event_handler_func func; | |
76 | void *context; | |
77 | }; | |
78 | ||
79 | struct pevent_func_params { | |
80 | struct pevent_func_params *next; | |
81 | enum pevent_func_arg_type type; | |
82 | }; | |
83 | ||
84 | struct pevent_function_handler { | |
85 | struct pevent_function_handler *next; | |
86 | enum pevent_func_arg_type ret_type; | |
87 | char *name; | |
88 | pevent_func_handler func; | |
89 | struct pevent_func_params *params; | |
90 | int nr_args; | |
91 | }; | |
92 | ||
93 | static unsigned long long | |
94 | process_defined_func(struct trace_seq *s, void *data, int size, | |
95 | struct event_format *event, struct print_arg *arg); | |
96 | ||
97 | static void free_func_handle(struct pevent_function_handler *func); | |
98 | ||
99 | /** | |
100 | * pevent_buffer_init - init buffer for parsing | |
101 | * @buf: buffer to parse | |
102 | * @size: the size of the buffer | |
103 | * | |
104 | * For use with pevent_read_token(), this initializes the internal | |
105 | * buffer that pevent_read_token() will parse. | |
106 | */ | |
107 | void pevent_buffer_init(const char *buf, unsigned long long size) | |
108 | { | |
109 | init_input_buf(buf, size); | |
110 | } | |
111 | ||
112 | void breakpoint(void) | |
113 | { | |
114 | static int x; | |
115 | x++; | |
116 | } | |
117 | ||
118 | struct print_arg *alloc_arg(void) | |
119 | { | |
87162d81 | 120 | return calloc(1, sizeof(struct print_arg)); |
f7d82350 SR |
121 | } |
122 | ||
123 | struct cmdline { | |
124 | char *comm; | |
125 | int pid; | |
126 | }; | |
127 | ||
128 | static int cmdline_cmp(const void *a, const void *b) | |
129 | { | |
130 | const struct cmdline *ca = a; | |
131 | const struct cmdline *cb = b; | |
132 | ||
133 | if (ca->pid < cb->pid) | |
134 | return -1; | |
135 | if (ca->pid > cb->pid) | |
136 | return 1; | |
137 | ||
138 | return 0; | |
139 | } | |
140 | ||
141 | struct cmdline_list { | |
142 | struct cmdline_list *next; | |
143 | char *comm; | |
144 | int pid; | |
145 | }; | |
146 | ||
147 | static int cmdline_init(struct pevent *pevent) | |
148 | { | |
149 | struct cmdline_list *cmdlist = pevent->cmdlist; | |
150 | struct cmdline_list *item; | |
151 | struct cmdline *cmdlines; | |
152 | int i; | |
153 | ||
a6d2a61a ACM |
154 | cmdlines = malloc(sizeof(*cmdlines) * pevent->cmdline_count); |
155 | if (!cmdlines) | |
156 | return -1; | |
f7d82350 SR |
157 | |
158 | i = 0; | |
159 | while (cmdlist) { | |
160 | cmdlines[i].pid = cmdlist->pid; | |
161 | cmdlines[i].comm = cmdlist->comm; | |
162 | i++; | |
163 | item = cmdlist; | |
164 | cmdlist = cmdlist->next; | |
165 | free(item); | |
166 | } | |
167 | ||
168 | qsort(cmdlines, pevent->cmdline_count, sizeof(*cmdlines), cmdline_cmp); | |
169 | ||
170 | pevent->cmdlines = cmdlines; | |
171 | pevent->cmdlist = NULL; | |
172 | ||
173 | return 0; | |
174 | } | |
175 | ||
27f94d52 | 176 | static const char *find_cmdline(struct pevent *pevent, int pid) |
f7d82350 SR |
177 | { |
178 | const struct cmdline *comm; | |
179 | struct cmdline key; | |
180 | ||
181 | if (!pid) | |
182 | return "<idle>"; | |
183 | ||
a6d2a61a ACM |
184 | if (!pevent->cmdlines && cmdline_init(pevent)) |
185 | return "<not enough memory for cmdlines!>"; | |
f7d82350 SR |
186 | |
187 | key.pid = pid; | |
188 | ||
189 | comm = bsearch(&key, pevent->cmdlines, pevent->cmdline_count, | |
190 | sizeof(*pevent->cmdlines), cmdline_cmp); | |
191 | ||
192 | if (comm) | |
193 | return comm->comm; | |
194 | return "<...>"; | |
195 | } | |
196 | ||
197 | /** | |
198 | * pevent_pid_is_registered - return if a pid has a cmdline registered | |
199 | * @pevent: handle for the pevent | |
200 | * @pid: The pid to check if it has a cmdline registered with. | |
201 | * | |
202 | * Returns 1 if the pid has a cmdline mapped to it | |
203 | * 0 otherwise. | |
204 | */ | |
205 | int pevent_pid_is_registered(struct pevent *pevent, int pid) | |
206 | { | |
207 | const struct cmdline *comm; | |
208 | struct cmdline key; | |
209 | ||
210 | if (!pid) | |
211 | return 1; | |
212 | ||
a6d2a61a ACM |
213 | if (!pevent->cmdlines && cmdline_init(pevent)) |
214 | return 0; | |
f7d82350 SR |
215 | |
216 | key.pid = pid; | |
217 | ||
218 | comm = bsearch(&key, pevent->cmdlines, pevent->cmdline_count, | |
219 | sizeof(*pevent->cmdlines), cmdline_cmp); | |
220 | ||
221 | if (comm) | |
222 | return 1; | |
223 | return 0; | |
224 | } | |
225 | ||
226 | /* | |
227 | * If the command lines have been converted to an array, then | |
228 | * we must add this pid. This is much slower than when cmdlines | |
229 | * are added before the array is initialized. | |
230 | */ | |
231 | static int add_new_comm(struct pevent *pevent, const char *comm, int pid) | |
232 | { | |
233 | struct cmdline *cmdlines = pevent->cmdlines; | |
234 | const struct cmdline *cmdline; | |
235 | struct cmdline key; | |
236 | ||
237 | if (!pid) | |
238 | return 0; | |
239 | ||
240 | /* avoid duplicates */ | |
241 | key.pid = pid; | |
242 | ||
243 | cmdline = bsearch(&key, pevent->cmdlines, pevent->cmdline_count, | |
244 | sizeof(*pevent->cmdlines), cmdline_cmp); | |
245 | if (cmdline) { | |
246 | errno = EEXIST; | |
247 | return -1; | |
248 | } | |
249 | ||
250 | cmdlines = realloc(cmdlines, sizeof(*cmdlines) * (pevent->cmdline_count + 1)); | |
251 | if (!cmdlines) { | |
252 | errno = ENOMEM; | |
253 | return -1; | |
254 | } | |
255 | ||
f7d82350 | 256 | cmdlines[pevent->cmdline_count].comm = strdup(comm); |
a6d2a61a ACM |
257 | if (!cmdlines[pevent->cmdline_count].comm) { |
258 | free(cmdlines); | |
259 | errno = ENOMEM; | |
260 | return -1; | |
261 | } | |
262 | ||
263 | cmdlines[pevent->cmdline_count].pid = pid; | |
f7d82350 SR |
264 | |
265 | if (cmdlines[pevent->cmdline_count].comm) | |
266 | pevent->cmdline_count++; | |
267 | ||
268 | qsort(cmdlines, pevent->cmdline_count, sizeof(*cmdlines), cmdline_cmp); | |
269 | pevent->cmdlines = cmdlines; | |
270 | ||
271 | return 0; | |
272 | } | |
273 | ||
274 | /** | |
275 | * pevent_register_comm - register a pid / comm mapping | |
276 | * @pevent: handle for the pevent | |
277 | * @comm: the command line to register | |
278 | * @pid: the pid to map the command line to | |
279 | * | |
280 | * This adds a mapping to search for command line names with | |
281 | * a given pid. The comm is duplicated. | |
282 | */ | |
283 | int pevent_register_comm(struct pevent *pevent, const char *comm, int pid) | |
284 | { | |
285 | struct cmdline_list *item; | |
286 | ||
287 | if (pevent->cmdlines) | |
288 | return add_new_comm(pevent, comm, pid); | |
289 | ||
a6d2a61a ACM |
290 | item = malloc(sizeof(*item)); |
291 | if (!item) | |
292 | return -1; | |
293 | ||
f7d82350 | 294 | item->comm = strdup(comm); |
a6d2a61a ACM |
295 | if (!item->comm) { |
296 | free(item); | |
297 | return -1; | |
298 | } | |
f7d82350 SR |
299 | item->pid = pid; |
300 | item->next = pevent->cmdlist; | |
301 | ||
302 | pevent->cmdlist = item; | |
303 | pevent->cmdline_count++; | |
304 | ||
305 | return 0; | |
306 | } | |
307 | ||
308 | struct func_map { | |
309 | unsigned long long addr; | |
310 | char *func; | |
311 | char *mod; | |
312 | }; | |
313 | ||
314 | struct func_list { | |
315 | struct func_list *next; | |
316 | unsigned long long addr; | |
317 | char *func; | |
318 | char *mod; | |
319 | }; | |
320 | ||
321 | static int func_cmp(const void *a, const void *b) | |
322 | { | |
323 | const struct func_map *fa = a; | |
324 | const struct func_map *fb = b; | |
325 | ||
326 | if (fa->addr < fb->addr) | |
327 | return -1; | |
328 | if (fa->addr > fb->addr) | |
329 | return 1; | |
330 | ||
331 | return 0; | |
332 | } | |
333 | ||
334 | /* | |
335 | * We are searching for a record in between, not an exact | |
336 | * match. | |
337 | */ | |
338 | static int func_bcmp(const void *a, const void *b) | |
339 | { | |
340 | const struct func_map *fa = a; | |
341 | const struct func_map *fb = b; | |
342 | ||
343 | if ((fa->addr == fb->addr) || | |
344 | ||
345 | (fa->addr > fb->addr && | |
346 | fa->addr < (fb+1)->addr)) | |
347 | return 0; | |
348 | ||
349 | if (fa->addr < fb->addr) | |
350 | return -1; | |
351 | ||
352 | return 1; | |
353 | } | |
354 | ||
355 | static int func_map_init(struct pevent *pevent) | |
356 | { | |
357 | struct func_list *funclist; | |
358 | struct func_list *item; | |
359 | struct func_map *func_map; | |
360 | int i; | |
361 | ||
a6d2a61a ACM |
362 | func_map = malloc(sizeof(*func_map) * (pevent->func_count + 1)); |
363 | if (!func_map) | |
364 | return -1; | |
365 | ||
f7d82350 SR |
366 | funclist = pevent->funclist; |
367 | ||
368 | i = 0; | |
369 | while (funclist) { | |
370 | func_map[i].func = funclist->func; | |
371 | func_map[i].addr = funclist->addr; | |
372 | func_map[i].mod = funclist->mod; | |
373 | i++; | |
374 | item = funclist; | |
375 | funclist = funclist->next; | |
376 | free(item); | |
377 | } | |
378 | ||
379 | qsort(func_map, pevent->func_count, sizeof(*func_map), func_cmp); | |
380 | ||
381 | /* | |
382 | * Add a special record at the end. | |
383 | */ | |
384 | func_map[pevent->func_count].func = NULL; | |
385 | func_map[pevent->func_count].addr = 0; | |
386 | func_map[pevent->func_count].mod = NULL; | |
387 | ||
388 | pevent->func_map = func_map; | |
389 | pevent->funclist = NULL; | |
390 | ||
391 | return 0; | |
392 | } | |
393 | ||
394 | static struct func_map * | |
395 | find_func(struct pevent *pevent, unsigned long long addr) | |
396 | { | |
397 | struct func_map *func; | |
398 | struct func_map key; | |
399 | ||
400 | if (!pevent->func_map) | |
401 | func_map_init(pevent); | |
402 | ||
403 | key.addr = addr; | |
404 | ||
405 | func = bsearch(&key, pevent->func_map, pevent->func_count, | |
406 | sizeof(*pevent->func_map), func_bcmp); | |
407 | ||
408 | return func; | |
409 | } | |
410 | ||
411 | /** | |
412 | * pevent_find_function - find a function by a given address | |
413 | * @pevent: handle for the pevent | |
414 | * @addr: the address to find the function with | |
415 | * | |
416 | * Returns a pointer to the function stored that has the given | |
417 | * address. Note, the address does not have to be exact, it | |
418 | * will select the function that would contain the address. | |
419 | */ | |
420 | const char *pevent_find_function(struct pevent *pevent, unsigned long long addr) | |
421 | { | |
422 | struct func_map *map; | |
423 | ||
424 | map = find_func(pevent, addr); | |
425 | if (!map) | |
426 | return NULL; | |
427 | ||
428 | return map->func; | |
429 | } | |
430 | ||
431 | /** | |
432 | * pevent_find_function_address - find a function address by a given address | |
433 | * @pevent: handle for the pevent | |
434 | * @addr: the address to find the function with | |
435 | * | |
436 | * Returns the address the function starts at. This can be used in | |
437 | * conjunction with pevent_find_function to print both the function | |
438 | * name and the function offset. | |
439 | */ | |
440 | unsigned long long | |
441 | pevent_find_function_address(struct pevent *pevent, unsigned long long addr) | |
442 | { | |
443 | struct func_map *map; | |
444 | ||
445 | map = find_func(pevent, addr); | |
446 | if (!map) | |
447 | return 0; | |
448 | ||
449 | return map->addr; | |
450 | } | |
451 | ||
452 | /** | |
453 | * pevent_register_function - register a function with a given address | |
454 | * @pevent: handle for the pevent | |
455 | * @function: the function name to register | |
456 | * @addr: the address the function starts at | |
457 | * @mod: the kernel module the function may be in (NULL for none) | |
458 | * | |
459 | * This registers a function name with an address and module. | |
460 | * The @func passed in is duplicated. | |
461 | */ | |
462 | int pevent_register_function(struct pevent *pevent, char *func, | |
463 | unsigned long long addr, char *mod) | |
464 | { | |
a6d2a61a | 465 | struct func_list *item = malloc(sizeof(*item)); |
f7d82350 | 466 | |
a6d2a61a ACM |
467 | if (!item) |
468 | return -1; | |
f7d82350 SR |
469 | |
470 | item->next = pevent->funclist; | |
471 | item->func = strdup(func); | |
a6d2a61a ACM |
472 | if (!item->func) |
473 | goto out_free; | |
474 | ||
475 | if (mod) { | |
f7d82350 | 476 | item->mod = strdup(mod); |
a6d2a61a ACM |
477 | if (!item->mod) |
478 | goto out_free_func; | |
479 | } else | |
f7d82350 SR |
480 | item->mod = NULL; |
481 | item->addr = addr; | |
482 | ||
ca63858e | 483 | pevent->funclist = item; |
f7d82350 SR |
484 | pevent->func_count++; |
485 | ||
486 | return 0; | |
a6d2a61a ACM |
487 | |
488 | out_free_func: | |
489 | free(item->func); | |
490 | item->func = NULL; | |
491 | out_free: | |
492 | free(item); | |
493 | errno = ENOMEM; | |
494 | return -1; | |
f7d82350 SR |
495 | } |
496 | ||
497 | /** | |
498 | * pevent_print_funcs - print out the stored functions | |
499 | * @pevent: handle for the pevent | |
500 | * | |
501 | * This prints out the stored functions. | |
502 | */ | |
503 | void pevent_print_funcs(struct pevent *pevent) | |
504 | { | |
505 | int i; | |
506 | ||
507 | if (!pevent->func_map) | |
508 | func_map_init(pevent); | |
509 | ||
510 | for (i = 0; i < (int)pevent->func_count; i++) { | |
511 | printf("%016llx %s", | |
512 | pevent->func_map[i].addr, | |
513 | pevent->func_map[i].func); | |
514 | if (pevent->func_map[i].mod) | |
515 | printf(" [%s]\n", pevent->func_map[i].mod); | |
516 | else | |
517 | printf("\n"); | |
518 | } | |
519 | } | |
520 | ||
521 | struct printk_map { | |
522 | unsigned long long addr; | |
523 | char *printk; | |
524 | }; | |
525 | ||
526 | struct printk_list { | |
527 | struct printk_list *next; | |
528 | unsigned long long addr; | |
529 | char *printk; | |
530 | }; | |
531 | ||
532 | static int printk_cmp(const void *a, const void *b) | |
533 | { | |
0fc45ef5 NK |
534 | const struct printk_map *pa = a; |
535 | const struct printk_map *pb = b; | |
f7d82350 | 536 | |
0fc45ef5 | 537 | if (pa->addr < pb->addr) |
f7d82350 | 538 | return -1; |
0fc45ef5 | 539 | if (pa->addr > pb->addr) |
f7d82350 SR |
540 | return 1; |
541 | ||
542 | return 0; | |
543 | } | |
544 | ||
a6d2a61a | 545 | static int printk_map_init(struct pevent *pevent) |
f7d82350 SR |
546 | { |
547 | struct printk_list *printklist; | |
548 | struct printk_list *item; | |
549 | struct printk_map *printk_map; | |
550 | int i; | |
551 | ||
a6d2a61a ACM |
552 | printk_map = malloc(sizeof(*printk_map) * (pevent->printk_count + 1)); |
553 | if (!printk_map) | |
554 | return -1; | |
f7d82350 SR |
555 | |
556 | printklist = pevent->printklist; | |
557 | ||
558 | i = 0; | |
559 | while (printklist) { | |
560 | printk_map[i].printk = printklist->printk; | |
561 | printk_map[i].addr = printklist->addr; | |
562 | i++; | |
563 | item = printklist; | |
564 | printklist = printklist->next; | |
565 | free(item); | |
566 | } | |
567 | ||
568 | qsort(printk_map, pevent->printk_count, sizeof(*printk_map), printk_cmp); | |
569 | ||
570 | pevent->printk_map = printk_map; | |
571 | pevent->printklist = NULL; | |
a6d2a61a ACM |
572 | |
573 | return 0; | |
f7d82350 SR |
574 | } |
575 | ||
576 | static struct printk_map * | |
577 | find_printk(struct pevent *pevent, unsigned long long addr) | |
578 | { | |
579 | struct printk_map *printk; | |
580 | struct printk_map key; | |
581 | ||
a6d2a61a ACM |
582 | if (!pevent->printk_map && printk_map_init(pevent)) |
583 | return NULL; | |
f7d82350 SR |
584 | |
585 | key.addr = addr; | |
586 | ||
587 | printk = bsearch(&key, pevent->printk_map, pevent->printk_count, | |
588 | sizeof(*pevent->printk_map), printk_cmp); | |
589 | ||
590 | return printk; | |
591 | } | |
592 | ||
593 | /** | |
594 | * pevent_register_print_string - register a string by its address | |
595 | * @pevent: handle for the pevent | |
596 | * @fmt: the string format to register | |
597 | * @addr: the address the string was located at | |
598 | * | |
599 | * This registers a string by the address it was stored in the kernel. | |
600 | * The @fmt passed in is duplicated. | |
601 | */ | |
602 | int pevent_register_print_string(struct pevent *pevent, char *fmt, | |
603 | unsigned long long addr) | |
604 | { | |
a6d2a61a | 605 | struct printk_list *item = malloc(sizeof(*item)); |
f7d82350 | 606 | |
a6d2a61a ACM |
607 | if (!item) |
608 | return -1; | |
f7d82350 SR |
609 | |
610 | item->next = pevent->printklist; | |
f7d82350 SR |
611 | item->addr = addr; |
612 | ||
a6d2a61a | 613 | item->printk = strdup(fmt); |
ca63858e | 614 | if (!item->printk) |
a6d2a61a | 615 | goto out_free; |
ca63858e NK |
616 | |
617 | pevent->printklist = item; | |
f7d82350 SR |
618 | pevent->printk_count++; |
619 | ||
620 | return 0; | |
a6d2a61a ACM |
621 | |
622 | out_free: | |
623 | free(item); | |
624 | errno = ENOMEM; | |
625 | return -1; | |
f7d82350 SR |
626 | } |
627 | ||
628 | /** | |
629 | * pevent_print_printk - print out the stored strings | |
630 | * @pevent: handle for the pevent | |
631 | * | |
632 | * This prints the string formats that were stored. | |
633 | */ | |
634 | void pevent_print_printk(struct pevent *pevent) | |
635 | { | |
636 | int i; | |
637 | ||
638 | if (!pevent->printk_map) | |
639 | printk_map_init(pevent); | |
640 | ||
641 | for (i = 0; i < (int)pevent->printk_count; i++) { | |
642 | printf("%016llx %s\n", | |
643 | pevent->printk_map[i].addr, | |
644 | pevent->printk_map[i].printk); | |
645 | } | |
646 | } | |
647 | ||
648 | static struct event_format *alloc_event(void) | |
649 | { | |
87162d81 | 650 | return calloc(1, sizeof(struct event_format)); |
f7d82350 SR |
651 | } |
652 | ||
a6d2a61a | 653 | static int add_event(struct pevent *pevent, struct event_format *event) |
f7d82350 SR |
654 | { |
655 | int i; | |
a6d2a61a ACM |
656 | struct event_format **events = realloc(pevent->events, sizeof(event) * |
657 | (pevent->nr_events + 1)); | |
658 | if (!events) | |
659 | return -1; | |
f7d82350 | 660 | |
a6d2a61a | 661 | pevent->events = events; |
f7d82350 SR |
662 | |
663 | for (i = 0; i < pevent->nr_events; i++) { | |
664 | if (pevent->events[i]->id > event->id) | |
665 | break; | |
666 | } | |
667 | if (i < pevent->nr_events) | |
668 | memmove(&pevent->events[i + 1], | |
669 | &pevent->events[i], | |
670 | sizeof(event) * (pevent->nr_events - i)); | |
671 | ||
672 | pevent->events[i] = event; | |
673 | pevent->nr_events++; | |
674 | ||
675 | event->pevent = pevent; | |
a6d2a61a ACM |
676 | |
677 | return 0; | |
f7d82350 SR |
678 | } |
679 | ||
680 | static int event_item_type(enum event_type type) | |
681 | { | |
682 | switch (type) { | |
683 | case EVENT_ITEM ... EVENT_SQUOTE: | |
684 | return 1; | |
685 | case EVENT_ERROR ... EVENT_DELIM: | |
686 | default: | |
687 | return 0; | |
688 | } | |
689 | } | |
690 | ||
691 | static void free_flag_sym(struct print_flag_sym *fsym) | |
692 | { | |
693 | struct print_flag_sym *next; | |
694 | ||
695 | while (fsym) { | |
696 | next = fsym->next; | |
697 | free(fsym->value); | |
698 | free(fsym->str); | |
699 | free(fsym); | |
700 | fsym = next; | |
701 | } | |
702 | } | |
703 | ||
704 | static void free_arg(struct print_arg *arg) | |
705 | { | |
706 | struct print_arg *farg; | |
707 | ||
708 | if (!arg) | |
709 | return; | |
710 | ||
711 | switch (arg->type) { | |
712 | case PRINT_ATOM: | |
713 | free(arg->atom.atom); | |
714 | break; | |
715 | case PRINT_FIELD: | |
716 | free(arg->field.name); | |
717 | break; | |
718 | case PRINT_FLAGS: | |
719 | free_arg(arg->flags.field); | |
720 | free(arg->flags.delim); | |
721 | free_flag_sym(arg->flags.flags); | |
722 | break; | |
723 | case PRINT_SYMBOL: | |
724 | free_arg(arg->symbol.field); | |
725 | free_flag_sym(arg->symbol.symbols); | |
726 | break; | |
e080e6f1 NK |
727 | case PRINT_HEX: |
728 | free_arg(arg->hex.field); | |
729 | free_arg(arg->hex.size); | |
730 | break; | |
f7d82350 SR |
731 | case PRINT_TYPE: |
732 | free(arg->typecast.type); | |
733 | free_arg(arg->typecast.item); | |
734 | break; | |
735 | case PRINT_STRING: | |
736 | case PRINT_BSTRING: | |
737 | free(arg->string.string); | |
738 | break; | |
739 | case PRINT_DYNAMIC_ARRAY: | |
740 | free(arg->dynarray.index); | |
741 | break; | |
742 | case PRINT_OP: | |
743 | free(arg->op.op); | |
744 | free_arg(arg->op.left); | |
745 | free_arg(arg->op.right); | |
746 | break; | |
747 | case PRINT_FUNC: | |
748 | while (arg->func.args) { | |
749 | farg = arg->func.args; | |
750 | arg->func.args = farg->next; | |
751 | free_arg(farg); | |
752 | } | |
753 | break; | |
754 | ||
755 | case PRINT_NULL: | |
756 | default: | |
757 | break; | |
758 | } | |
759 | ||
760 | free(arg); | |
761 | } | |
762 | ||
763 | static enum event_type get_type(int ch) | |
764 | { | |
765 | if (ch == '\n') | |
766 | return EVENT_NEWLINE; | |
767 | if (isspace(ch)) | |
768 | return EVENT_SPACE; | |
769 | if (isalnum(ch) || ch == '_') | |
770 | return EVENT_ITEM; | |
771 | if (ch == '\'') | |
772 | return EVENT_SQUOTE; | |
773 | if (ch == '"') | |
774 | return EVENT_DQUOTE; | |
775 | if (!isprint(ch)) | |
776 | return EVENT_NONE; | |
777 | if (ch == '(' || ch == ')' || ch == ',') | |
778 | return EVENT_DELIM; | |
779 | ||
780 | return EVENT_OP; | |
781 | } | |
782 | ||
783 | static int __read_char(void) | |
784 | { | |
785 | if (input_buf_ptr >= input_buf_siz) | |
786 | return -1; | |
787 | ||
788 | return input_buf[input_buf_ptr++]; | |
789 | } | |
790 | ||
791 | static int __peek_char(void) | |
792 | { | |
793 | if (input_buf_ptr >= input_buf_siz) | |
794 | return -1; | |
795 | ||
796 | return input_buf[input_buf_ptr]; | |
797 | } | |
798 | ||
799 | /** | |
800 | * pevent_peek_char - peek at the next character that will be read | |
801 | * | |
802 | * Returns the next character read, or -1 if end of buffer. | |
803 | */ | |
804 | int pevent_peek_char(void) | |
805 | { | |
806 | return __peek_char(); | |
807 | } | |
808 | ||
deba3fb2 NK |
809 | static int extend_token(char **tok, char *buf, int size) |
810 | { | |
811 | char *newtok = realloc(*tok, size); | |
812 | ||
813 | if (!newtok) { | |
814 | free(*tok); | |
815 | *tok = NULL; | |
816 | return -1; | |
817 | } | |
818 | ||
819 | if (!*tok) | |
820 | strcpy(newtok, buf); | |
821 | else | |
822 | strcat(newtok, buf); | |
823 | *tok = newtok; | |
824 | ||
825 | return 0; | |
826 | } | |
827 | ||
f7d82350 SR |
828 | static enum event_type force_token(const char *str, char **tok); |
829 | ||
830 | static enum event_type __read_token(char **tok) | |
831 | { | |
832 | char buf[BUFSIZ]; | |
833 | int ch, last_ch, quote_ch, next_ch; | |
834 | int i = 0; | |
835 | int tok_size = 0; | |
836 | enum event_type type; | |
837 | ||
838 | *tok = NULL; | |
839 | ||
840 | ||
841 | ch = __read_char(); | |
842 | if (ch < 0) | |
843 | return EVENT_NONE; | |
844 | ||
845 | type = get_type(ch); | |
846 | if (type == EVENT_NONE) | |
847 | return type; | |
848 | ||
849 | buf[i++] = ch; | |
850 | ||
851 | switch (type) { | |
852 | case EVENT_NEWLINE: | |
853 | case EVENT_DELIM: | |
0dbca1e3 ACM |
854 | if (asprintf(tok, "%c", ch) < 0) |
855 | return EVENT_ERROR; | |
856 | ||
f7d82350 SR |
857 | return type; |
858 | ||
859 | case EVENT_OP: | |
860 | switch (ch) { | |
861 | case '-': | |
862 | next_ch = __peek_char(); | |
863 | if (next_ch == '>') { | |
864 | buf[i++] = __read_char(); | |
865 | break; | |
866 | } | |
867 | /* fall through */ | |
868 | case '+': | |
869 | case '|': | |
870 | case '&': | |
871 | case '>': | |
872 | case '<': | |
873 | last_ch = ch; | |
874 | ch = __peek_char(); | |
875 | if (ch != last_ch) | |
876 | goto test_equal; | |
877 | buf[i++] = __read_char(); | |
878 | switch (last_ch) { | |
879 | case '>': | |
880 | case '<': | |
881 | goto test_equal; | |
882 | default: | |
883 | break; | |
884 | } | |
885 | break; | |
886 | case '!': | |
887 | case '=': | |
888 | goto test_equal; | |
889 | default: /* what should we do instead? */ | |
890 | break; | |
891 | } | |
892 | buf[i] = 0; | |
893 | *tok = strdup(buf); | |
894 | return type; | |
895 | ||
896 | test_equal: | |
897 | ch = __peek_char(); | |
898 | if (ch == '=') | |
899 | buf[i++] = __read_char(); | |
900 | goto out; | |
901 | ||
902 | case EVENT_DQUOTE: | |
903 | case EVENT_SQUOTE: | |
904 | /* don't keep quotes */ | |
905 | i--; | |
906 | quote_ch = ch; | |
907 | last_ch = 0; | |
908 | concat: | |
909 | do { | |
910 | if (i == (BUFSIZ - 1)) { | |
911 | buf[i] = 0; | |
f7d82350 | 912 | tok_size += BUFSIZ; |
deba3fb2 NK |
913 | |
914 | if (extend_token(tok, buf, tok_size) < 0) | |
915 | return EVENT_NONE; | |
f7d82350 SR |
916 | i = 0; |
917 | } | |
918 | last_ch = ch; | |
919 | ch = __read_char(); | |
920 | buf[i++] = ch; | |
921 | /* the '\' '\' will cancel itself */ | |
922 | if (ch == '\\' && last_ch == '\\') | |
923 | last_ch = 0; | |
924 | } while (ch != quote_ch || last_ch == '\\'); | |
925 | /* remove the last quote */ | |
926 | i--; | |
927 | ||
928 | /* | |
929 | * For strings (double quotes) check the next token. | |
930 | * If it is another string, concatinate the two. | |
931 | */ | |
932 | if (type == EVENT_DQUOTE) { | |
933 | unsigned long long save_input_buf_ptr = input_buf_ptr; | |
934 | ||
935 | do { | |
936 | ch = __read_char(); | |
937 | } while (isspace(ch)); | |
938 | if (ch == '"') | |
939 | goto concat; | |
940 | input_buf_ptr = save_input_buf_ptr; | |
941 | } | |
942 | ||
943 | goto out; | |
944 | ||
945 | case EVENT_ERROR ... EVENT_SPACE: | |
946 | case EVENT_ITEM: | |
947 | default: | |
948 | break; | |
949 | } | |
950 | ||
951 | while (get_type(__peek_char()) == type) { | |
952 | if (i == (BUFSIZ - 1)) { | |
953 | buf[i] = 0; | |
deba3fb2 | 954 | tok_size += BUFSIZ; |
f7d82350 | 955 | |
deba3fb2 | 956 | if (extend_token(tok, buf, tok_size) < 0) |
f7d82350 | 957 | return EVENT_NONE; |
f7d82350 SR |
958 | i = 0; |
959 | } | |
960 | ch = __read_char(); | |
961 | buf[i++] = ch; | |
962 | } | |
963 | ||
964 | out: | |
965 | buf[i] = 0; | |
deba3fb2 | 966 | if (extend_token(tok, buf, tok_size + i + 1) < 0) |
f7d82350 SR |
967 | return EVENT_NONE; |
968 | ||
969 | if (type == EVENT_ITEM) { | |
970 | /* | |
971 | * Older versions of the kernel has a bug that | |
972 | * creates invalid symbols and will break the mac80211 | |
973 | * parsing. This is a work around to that bug. | |
974 | * | |
975 | * See Linux kernel commit: | |
976 | * 811cb50baf63461ce0bdb234927046131fc7fa8b | |
977 | */ | |
978 | if (strcmp(*tok, "LOCAL_PR_FMT") == 0) { | |
979 | free(*tok); | |
980 | *tok = NULL; | |
981 | return force_token("\"\%s\" ", tok); | |
982 | } else if (strcmp(*tok, "STA_PR_FMT") == 0) { | |
983 | free(*tok); | |
984 | *tok = NULL; | |
985 | return force_token("\" sta:%pM\" ", tok); | |
986 | } else if (strcmp(*tok, "VIF_PR_FMT") == 0) { | |
987 | free(*tok); | |
988 | *tok = NULL; | |
989 | return force_token("\" vif:%p(%d)\" ", tok); | |
990 | } | |
991 | } | |
992 | ||
993 | return type; | |
994 | } | |
995 | ||
996 | static enum event_type force_token(const char *str, char **tok) | |
997 | { | |
998 | const char *save_input_buf; | |
999 | unsigned long long save_input_buf_ptr; | |
1000 | unsigned long long save_input_buf_siz; | |
1001 | enum event_type type; | |
1002 | ||
1003 | /* save off the current input pointers */ | |
1004 | save_input_buf = input_buf; | |
1005 | save_input_buf_ptr = input_buf_ptr; | |
1006 | save_input_buf_siz = input_buf_siz; | |
1007 | ||
1008 | init_input_buf(str, strlen(str)); | |
1009 | ||
1010 | type = __read_token(tok); | |
1011 | ||
1012 | /* reset back to original token */ | |
1013 | input_buf = save_input_buf; | |
1014 | input_buf_ptr = save_input_buf_ptr; | |
1015 | input_buf_siz = save_input_buf_siz; | |
1016 | ||
1017 | return type; | |
1018 | } | |
1019 | ||
1020 | static void free_token(char *tok) | |
1021 | { | |
1022 | if (tok) | |
1023 | free(tok); | |
1024 | } | |
1025 | ||
1026 | static enum event_type read_token(char **tok) | |
1027 | { | |
1028 | enum event_type type; | |
1029 | ||
1030 | for (;;) { | |
1031 | type = __read_token(tok); | |
1032 | if (type != EVENT_SPACE) | |
1033 | return type; | |
1034 | ||
1035 | free_token(*tok); | |
1036 | } | |
1037 | ||
1038 | /* not reached */ | |
1039 | *tok = NULL; | |
1040 | return EVENT_NONE; | |
1041 | } | |
1042 | ||
1043 | /** | |
1044 | * pevent_read_token - access to utilites to use the pevent parser | |
1045 | * @tok: The token to return | |
1046 | * | |
1047 | * This will parse tokens from the string given by | |
1048 | * pevent_init_data(). | |
1049 | * | |
1050 | * Returns the token type. | |
1051 | */ | |
1052 | enum event_type pevent_read_token(char **tok) | |
1053 | { | |
1054 | return read_token(tok); | |
1055 | } | |
1056 | ||
1057 | /** | |
1058 | * pevent_free_token - free a token returned by pevent_read_token | |
1059 | * @token: the token to free | |
1060 | */ | |
1061 | void pevent_free_token(char *token) | |
1062 | { | |
1063 | free_token(token); | |
1064 | } | |
1065 | ||
1066 | /* no newline */ | |
1067 | static enum event_type read_token_item(char **tok) | |
1068 | { | |
1069 | enum event_type type; | |
1070 | ||
1071 | for (;;) { | |
1072 | type = __read_token(tok); | |
1073 | if (type != EVENT_SPACE && type != EVENT_NEWLINE) | |
1074 | return type; | |
1075 | free_token(*tok); | |
1076 | *tok = NULL; | |
1077 | } | |
1078 | ||
1079 | /* not reached */ | |
1080 | *tok = NULL; | |
1081 | return EVENT_NONE; | |
1082 | } | |
1083 | ||
1084 | static int test_type(enum event_type type, enum event_type expect) | |
1085 | { | |
1086 | if (type != expect) { | |
1087 | do_warning("Error: expected type %d but read %d", | |
1088 | expect, type); | |
1089 | return -1; | |
1090 | } | |
1091 | return 0; | |
1092 | } | |
1093 | ||
1094 | static int test_type_token(enum event_type type, const char *token, | |
1095 | enum event_type expect, const char *expect_tok) | |
1096 | { | |
1097 | if (type != expect) { | |
1098 | do_warning("Error: expected type %d but read %d", | |
1099 | expect, type); | |
1100 | return -1; | |
1101 | } | |
1102 | ||
1103 | if (strcmp(token, expect_tok) != 0) { | |
1104 | do_warning("Error: expected '%s' but read '%s'", | |
1105 | expect_tok, token); | |
1106 | return -1; | |
1107 | } | |
1108 | return 0; | |
1109 | } | |
1110 | ||
1111 | static int __read_expect_type(enum event_type expect, char **tok, int newline_ok) | |
1112 | { | |
1113 | enum event_type type; | |
1114 | ||
1115 | if (newline_ok) | |
1116 | type = read_token(tok); | |
1117 | else | |
1118 | type = read_token_item(tok); | |
1119 | return test_type(type, expect); | |
1120 | } | |
1121 | ||
1122 | static int read_expect_type(enum event_type expect, char **tok) | |
1123 | { | |
1124 | return __read_expect_type(expect, tok, 1); | |
1125 | } | |
1126 | ||
1127 | static int __read_expected(enum event_type expect, const char *str, | |
1128 | int newline_ok) | |
1129 | { | |
1130 | enum event_type type; | |
1131 | char *token; | |
1132 | int ret; | |
1133 | ||
1134 | if (newline_ok) | |
1135 | type = read_token(&token); | |
1136 | else | |
1137 | type = read_token_item(&token); | |
1138 | ||
1139 | ret = test_type_token(type, token, expect, str); | |
1140 | ||
1141 | free_token(token); | |
1142 | ||
1143 | return ret; | |
1144 | } | |
1145 | ||
1146 | static int read_expected(enum event_type expect, const char *str) | |
1147 | { | |
1148 | return __read_expected(expect, str, 1); | |
1149 | } | |
1150 | ||
1151 | static int read_expected_item(enum event_type expect, const char *str) | |
1152 | { | |
1153 | return __read_expected(expect, str, 0); | |
1154 | } | |
1155 | ||
1156 | static char *event_read_name(void) | |
1157 | { | |
1158 | char *token; | |
1159 | ||
1160 | if (read_expected(EVENT_ITEM, "name") < 0) | |
1161 | return NULL; | |
1162 | ||
1163 | if (read_expected(EVENT_OP, ":") < 0) | |
1164 | return NULL; | |
1165 | ||
1166 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
1167 | goto fail; | |
1168 | ||
1169 | return token; | |
1170 | ||
1171 | fail: | |
1172 | free_token(token); | |
1173 | return NULL; | |
1174 | } | |
1175 | ||
1176 | static int event_read_id(void) | |
1177 | { | |
1178 | char *token; | |
1179 | int id; | |
1180 | ||
1181 | if (read_expected_item(EVENT_ITEM, "ID") < 0) | |
1182 | return -1; | |
1183 | ||
1184 | if (read_expected(EVENT_OP, ":") < 0) | |
1185 | return -1; | |
1186 | ||
1187 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
1188 | goto fail; | |
1189 | ||
1190 | id = strtoul(token, NULL, 0); | |
1191 | free_token(token); | |
1192 | return id; | |
1193 | ||
1194 | fail: | |
1195 | free_token(token); | |
1196 | return -1; | |
1197 | } | |
1198 | ||
1199 | static int field_is_string(struct format_field *field) | |
1200 | { | |
1201 | if ((field->flags & FIELD_IS_ARRAY) && | |
1202 | (strstr(field->type, "char") || strstr(field->type, "u8") || | |
1203 | strstr(field->type, "s8"))) | |
1204 | return 1; | |
1205 | ||
1206 | return 0; | |
1207 | } | |
1208 | ||
1209 | static int field_is_dynamic(struct format_field *field) | |
1210 | { | |
1211 | if (strncmp(field->type, "__data_loc", 10) == 0) | |
1212 | return 1; | |
1213 | ||
1214 | return 0; | |
1215 | } | |
1216 | ||
1217 | static int field_is_long(struct format_field *field) | |
1218 | { | |
1219 | /* includes long long */ | |
1220 | if (strstr(field->type, "long")) | |
1221 | return 1; | |
1222 | ||
1223 | return 0; | |
1224 | } | |
1225 | ||
1226 | static int event_read_fields(struct event_format *event, struct format_field **fields) | |
1227 | { | |
1228 | struct format_field *field = NULL; | |
1229 | enum event_type type; | |
1230 | char *token; | |
1231 | char *last_token; | |
1232 | int count = 0; | |
1233 | ||
1234 | do { | |
1235 | type = read_token(&token); | |
1236 | if (type == EVENT_NEWLINE) { | |
1237 | free_token(token); | |
1238 | return count; | |
1239 | } | |
1240 | ||
1241 | count++; | |
1242 | ||
1243 | if (test_type_token(type, token, EVENT_ITEM, "field")) | |
1244 | goto fail; | |
1245 | free_token(token); | |
1246 | ||
1247 | type = read_token(&token); | |
1248 | /* | |
1249 | * The ftrace fields may still use the "special" name. | |
1250 | * Just ignore it. | |
1251 | */ | |
1252 | if (event->flags & EVENT_FL_ISFTRACE && | |
1253 | type == EVENT_ITEM && strcmp(token, "special") == 0) { | |
1254 | free_token(token); | |
1255 | type = read_token(&token); | |
1256 | } | |
1257 | ||
1258 | if (test_type_token(type, token, EVENT_OP, ":") < 0) | |
1259 | goto fail; | |
1260 | ||
1261 | free_token(token); | |
1262 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
1263 | goto fail; | |
1264 | ||
1265 | last_token = token; | |
1266 | ||
87162d81 ACM |
1267 | field = calloc(1, sizeof(*field)); |
1268 | if (!field) | |
1269 | goto fail; | |
1270 | ||
f7d82350 SR |
1271 | field->event = event; |
1272 | ||
1273 | /* read the rest of the type */ | |
1274 | for (;;) { | |
1275 | type = read_token(&token); | |
1276 | if (type == EVENT_ITEM || | |
1277 | (type == EVENT_OP && strcmp(token, "*") == 0) || | |
1278 | /* | |
1279 | * Some of the ftrace fields are broken and have | |
1280 | * an illegal "." in them. | |
1281 | */ | |
1282 | (event->flags & EVENT_FL_ISFTRACE && | |
1283 | type == EVENT_OP && strcmp(token, ".") == 0)) { | |
1284 | ||
1285 | if (strcmp(token, "*") == 0) | |
1286 | field->flags |= FIELD_IS_POINTER; | |
1287 | ||
1288 | if (field->type) { | |
d286447f NK |
1289 | char *new_type; |
1290 | new_type = realloc(field->type, | |
1291 | strlen(field->type) + | |
1292 | strlen(last_token) + 2); | |
1293 | if (!new_type) { | |
1294 | free(last_token); | |
1295 | goto fail; | |
1296 | } | |
1297 | field->type = new_type; | |
f7d82350 SR |
1298 | strcat(field->type, " "); |
1299 | strcat(field->type, last_token); | |
1300 | free(last_token); | |
1301 | } else | |
1302 | field->type = last_token; | |
1303 | last_token = token; | |
1304 | continue; | |
1305 | } | |
1306 | ||
1307 | break; | |
1308 | } | |
1309 | ||
1310 | if (!field->type) { | |
b8511920 | 1311 | do_warning("%s: no type found", __func__); |
f7d82350 SR |
1312 | goto fail; |
1313 | } | |
1314 | field->name = last_token; | |
1315 | ||
1316 | if (test_type(type, EVENT_OP)) | |
1317 | goto fail; | |
1318 | ||
1319 | if (strcmp(token, "[") == 0) { | |
1320 | enum event_type last_type = type; | |
1321 | char *brackets = token; | |
d286447f | 1322 | char *new_brackets; |
f7d82350 SR |
1323 | int len; |
1324 | ||
1325 | field->flags |= FIELD_IS_ARRAY; | |
1326 | ||
1327 | type = read_token(&token); | |
1328 | ||
1329 | if (type == EVENT_ITEM) | |
1330 | field->arraylen = strtoul(token, NULL, 0); | |
1331 | else | |
1332 | field->arraylen = 0; | |
1333 | ||
1334 | while (strcmp(token, "]") != 0) { | |
1335 | if (last_type == EVENT_ITEM && | |
1336 | type == EVENT_ITEM) | |
1337 | len = 2; | |
1338 | else | |
1339 | len = 1; | |
1340 | last_type = type; | |
1341 | ||
d286447f NK |
1342 | new_brackets = realloc(brackets, |
1343 | strlen(brackets) + | |
1344 | strlen(token) + len); | |
1345 | if (!new_brackets) { | |
1346 | free(brackets); | |
1347 | goto fail; | |
1348 | } | |
1349 | brackets = new_brackets; | |
f7d82350 SR |
1350 | if (len == 2) |
1351 | strcat(brackets, " "); | |
1352 | strcat(brackets, token); | |
1353 | /* We only care about the last token */ | |
1354 | field->arraylen = strtoul(token, NULL, 0); | |
1355 | free_token(token); | |
1356 | type = read_token(&token); | |
1357 | if (type == EVENT_NONE) { | |
b8511920 | 1358 | do_warning("failed to find token"); |
f7d82350 SR |
1359 | goto fail; |
1360 | } | |
1361 | } | |
1362 | ||
1363 | free_token(token); | |
1364 | ||
d286447f NK |
1365 | new_brackets = realloc(brackets, strlen(brackets) + 2); |
1366 | if (!new_brackets) { | |
1367 | free(brackets); | |
1368 | goto fail; | |
1369 | } | |
1370 | brackets = new_brackets; | |
f7d82350 SR |
1371 | strcat(brackets, "]"); |
1372 | ||
1373 | /* add brackets to type */ | |
1374 | ||
1375 | type = read_token(&token); | |
1376 | /* | |
1377 | * If the next token is not an OP, then it is of | |
1378 | * the format: type [] item; | |
1379 | */ | |
1380 | if (type == EVENT_ITEM) { | |
d286447f NK |
1381 | char *new_type; |
1382 | new_type = realloc(field->type, | |
1383 | strlen(field->type) + | |
1384 | strlen(field->name) + | |
1385 | strlen(brackets) + 2); | |
1386 | if (!new_type) { | |
1387 | free(brackets); | |
1388 | goto fail; | |
1389 | } | |
1390 | field->type = new_type; | |
f7d82350 SR |
1391 | strcat(field->type, " "); |
1392 | strcat(field->type, field->name); | |
1393 | free_token(field->name); | |
1394 | strcat(field->type, brackets); | |
1395 | field->name = token; | |
1396 | type = read_token(&token); | |
1397 | } else { | |
d286447f NK |
1398 | char *new_type; |
1399 | new_type = realloc(field->type, | |
1400 | strlen(field->type) + | |
1401 | strlen(brackets) + 1); | |
1402 | if (!new_type) { | |
1403 | free(brackets); | |
1404 | goto fail; | |
1405 | } | |
1406 | field->type = new_type; | |
f7d82350 SR |
1407 | strcat(field->type, brackets); |
1408 | } | |
1409 | free(brackets); | |
1410 | } | |
1411 | ||
1412 | if (field_is_string(field)) | |
1413 | field->flags |= FIELD_IS_STRING; | |
1414 | if (field_is_dynamic(field)) | |
1415 | field->flags |= FIELD_IS_DYNAMIC; | |
1416 | if (field_is_long(field)) | |
1417 | field->flags |= FIELD_IS_LONG; | |
1418 | ||
1419 | if (test_type_token(type, token, EVENT_OP, ";")) | |
1420 | goto fail; | |
1421 | free_token(token); | |
1422 | ||
1423 | if (read_expected(EVENT_ITEM, "offset") < 0) | |
1424 | goto fail_expect; | |
1425 | ||
1426 | if (read_expected(EVENT_OP, ":") < 0) | |
1427 | goto fail_expect; | |
1428 | ||
1429 | if (read_expect_type(EVENT_ITEM, &token)) | |
1430 | goto fail; | |
1431 | field->offset = strtoul(token, NULL, 0); | |
1432 | free_token(token); | |
1433 | ||
1434 | if (read_expected(EVENT_OP, ";") < 0) | |
1435 | goto fail_expect; | |
1436 | ||
1437 | if (read_expected(EVENT_ITEM, "size") < 0) | |
1438 | goto fail_expect; | |
1439 | ||
1440 | if (read_expected(EVENT_OP, ":") < 0) | |
1441 | goto fail_expect; | |
1442 | ||
1443 | if (read_expect_type(EVENT_ITEM, &token)) | |
1444 | goto fail; | |
1445 | field->size = strtoul(token, NULL, 0); | |
1446 | free_token(token); | |
1447 | ||
1448 | if (read_expected(EVENT_OP, ";") < 0) | |
1449 | goto fail_expect; | |
1450 | ||
1451 | type = read_token(&token); | |
1452 | if (type != EVENT_NEWLINE) { | |
1453 | /* newer versions of the kernel have a "signed" type */ | |
1454 | if (test_type_token(type, token, EVENT_ITEM, "signed")) | |
1455 | goto fail; | |
1456 | ||
1457 | free_token(token); | |
1458 | ||
1459 | if (read_expected(EVENT_OP, ":") < 0) | |
1460 | goto fail_expect; | |
1461 | ||
1462 | if (read_expect_type(EVENT_ITEM, &token)) | |
1463 | goto fail; | |
1464 | ||
1465 | /* add signed type */ | |
1466 | ||
1467 | free_token(token); | |
1468 | if (read_expected(EVENT_OP, ";") < 0) | |
1469 | goto fail_expect; | |
1470 | ||
1471 | if (read_expect_type(EVENT_NEWLINE, &token)) | |
1472 | goto fail; | |
1473 | } | |
1474 | ||
1475 | free_token(token); | |
1476 | ||
1477 | if (field->flags & FIELD_IS_ARRAY) { | |
1478 | if (field->arraylen) | |
1479 | field->elementsize = field->size / field->arraylen; | |
1480 | else if (field->flags & FIELD_IS_STRING) | |
1481 | field->elementsize = 1; | |
1482 | else | |
1483 | field->elementsize = event->pevent->long_size; | |
1484 | } else | |
1485 | field->elementsize = field->size; | |
1486 | ||
1487 | *fields = field; | |
1488 | fields = &field->next; | |
1489 | ||
1490 | } while (1); | |
1491 | ||
1492 | return 0; | |
1493 | ||
1494 | fail: | |
1495 | free_token(token); | |
1496 | fail_expect: | |
57d34dc5 NK |
1497 | if (field) { |
1498 | free(field->type); | |
1499 | free(field->name); | |
f7d82350 | 1500 | free(field); |
57d34dc5 | 1501 | } |
f7d82350 SR |
1502 | return -1; |
1503 | } | |
1504 | ||
1505 | static int event_read_format(struct event_format *event) | |
1506 | { | |
1507 | char *token; | |
1508 | int ret; | |
1509 | ||
1510 | if (read_expected_item(EVENT_ITEM, "format") < 0) | |
1511 | return -1; | |
1512 | ||
1513 | if (read_expected(EVENT_OP, ":") < 0) | |
1514 | return -1; | |
1515 | ||
1516 | if (read_expect_type(EVENT_NEWLINE, &token)) | |
1517 | goto fail; | |
1518 | free_token(token); | |
1519 | ||
1520 | ret = event_read_fields(event, &event->format.common_fields); | |
1521 | if (ret < 0) | |
1522 | return ret; | |
1523 | event->format.nr_common = ret; | |
1524 | ||
1525 | ret = event_read_fields(event, &event->format.fields); | |
1526 | if (ret < 0) | |
1527 | return ret; | |
1528 | event->format.nr_fields = ret; | |
1529 | ||
1530 | return 0; | |
1531 | ||
1532 | fail: | |
1533 | free_token(token); | |
1534 | return -1; | |
1535 | } | |
1536 | ||
1537 | static enum event_type | |
1538 | process_arg_token(struct event_format *event, struct print_arg *arg, | |
1539 | char **tok, enum event_type type); | |
1540 | ||
1541 | static enum event_type | |
1542 | process_arg(struct event_format *event, struct print_arg *arg, char **tok) | |
1543 | { | |
1544 | enum event_type type; | |
1545 | char *token; | |
1546 | ||
1547 | type = read_token(&token); | |
1548 | *tok = token; | |
1549 | ||
1550 | return process_arg_token(event, arg, tok, type); | |
1551 | } | |
1552 | ||
1553 | static enum event_type | |
1554 | process_op(struct event_format *event, struct print_arg *arg, char **tok); | |
1555 | ||
1556 | static enum event_type | |
1557 | process_cond(struct event_format *event, struct print_arg *top, char **tok) | |
1558 | { | |
1559 | struct print_arg *arg, *left, *right; | |
1560 | enum event_type type; | |
1561 | char *token = NULL; | |
1562 | ||
1563 | arg = alloc_arg(); | |
1564 | left = alloc_arg(); | |
1565 | right = alloc_arg(); | |
1566 | ||
b1ac754b NK |
1567 | if (!arg || !left || !right) { |
1568 | do_warning("%s: not enough memory!", __func__); | |
1569 | /* arg will be freed at out_free */ | |
1570 | free_arg(left); | |
1571 | free_arg(right); | |
1572 | goto out_free; | |
1573 | } | |
1574 | ||
f7d82350 SR |
1575 | arg->type = PRINT_OP; |
1576 | arg->op.left = left; | |
1577 | arg->op.right = right; | |
1578 | ||
1579 | *tok = NULL; | |
1580 | type = process_arg(event, left, &token); | |
1581 | ||
1582 | again: | |
1583 | /* Handle other operations in the arguments */ | |
1584 | if (type == EVENT_OP && strcmp(token, ":") != 0) { | |
1585 | type = process_op(event, left, &token); | |
1586 | goto again; | |
1587 | } | |
1588 | ||
1589 | if (test_type_token(type, token, EVENT_OP, ":")) | |
1590 | goto out_free; | |
1591 | ||
1592 | arg->op.op = token; | |
1593 | ||
1594 | type = process_arg(event, right, &token); | |
1595 | ||
1596 | top->op.right = arg; | |
1597 | ||
1598 | *tok = token; | |
1599 | return type; | |
1600 | ||
1601 | out_free: | |
1602 | /* Top may point to itself */ | |
1603 | top->op.right = NULL; | |
1604 | free_token(token); | |
1605 | free_arg(arg); | |
1606 | return EVENT_ERROR; | |
1607 | } | |
1608 | ||
1609 | static enum event_type | |
1610 | process_array(struct event_format *event, struct print_arg *top, char **tok) | |
1611 | { | |
1612 | struct print_arg *arg; | |
1613 | enum event_type type; | |
1614 | char *token = NULL; | |
1615 | ||
1616 | arg = alloc_arg(); | |
b1ac754b NK |
1617 | if (!arg) { |
1618 | do_warning("%s: not enough memory!", __func__); | |
1619 | /* '*tok' is set to top->op.op. No need to free. */ | |
1620 | *tok = NULL; | |
1621 | return EVENT_ERROR; | |
1622 | } | |
f7d82350 SR |
1623 | |
1624 | *tok = NULL; | |
1625 | type = process_arg(event, arg, &token); | |
1626 | if (test_type_token(type, token, EVENT_OP, "]")) | |
1627 | goto out_free; | |
1628 | ||
1629 | top->op.right = arg; | |
1630 | ||
1631 | free_token(token); | |
1632 | type = read_token_item(&token); | |
1633 | *tok = token; | |
1634 | ||
1635 | return type; | |
1636 | ||
1637 | out_free: | |
1bce6e0f | 1638 | free_token(token); |
f7d82350 SR |
1639 | free_arg(arg); |
1640 | return EVENT_ERROR; | |
1641 | } | |
1642 | ||
1643 | static int get_op_prio(char *op) | |
1644 | { | |
1645 | if (!op[1]) { | |
1646 | switch (op[0]) { | |
1647 | case '~': | |
1648 | case '!': | |
1649 | return 4; | |
1650 | case '*': | |
1651 | case '/': | |
1652 | case '%': | |
1653 | return 6; | |
1654 | case '+': | |
1655 | case '-': | |
1656 | return 7; | |
1657 | /* '>>' and '<<' are 8 */ | |
1658 | case '<': | |
1659 | case '>': | |
1660 | return 9; | |
1661 | /* '==' and '!=' are 10 */ | |
1662 | case '&': | |
1663 | return 11; | |
1664 | case '^': | |
1665 | return 12; | |
1666 | case '|': | |
1667 | return 13; | |
1668 | case '?': | |
1669 | return 16; | |
1670 | default: | |
14ffde0e | 1671 | do_warning("unknown op '%c'", op[0]); |
f7d82350 SR |
1672 | return -1; |
1673 | } | |
1674 | } else { | |
1675 | if (strcmp(op, "++") == 0 || | |
1676 | strcmp(op, "--") == 0) { | |
1677 | return 3; | |
1678 | } else if (strcmp(op, ">>") == 0 || | |
1679 | strcmp(op, "<<") == 0) { | |
1680 | return 8; | |
1681 | } else if (strcmp(op, ">=") == 0 || | |
1682 | strcmp(op, "<=") == 0) { | |
1683 | return 9; | |
1684 | } else if (strcmp(op, "==") == 0 || | |
1685 | strcmp(op, "!=") == 0) { | |
1686 | return 10; | |
1687 | } else if (strcmp(op, "&&") == 0) { | |
1688 | return 14; | |
1689 | } else if (strcmp(op, "||") == 0) { | |
1690 | return 15; | |
1691 | } else { | |
14ffde0e | 1692 | do_warning("unknown op '%s'", op); |
f7d82350 SR |
1693 | return -1; |
1694 | } | |
1695 | } | |
1696 | } | |
1697 | ||
14ffde0e | 1698 | static int set_op_prio(struct print_arg *arg) |
f7d82350 SR |
1699 | { |
1700 | ||
1701 | /* single ops are the greatest */ | |
14ffde0e | 1702 | if (!arg->op.left || arg->op.left->type == PRINT_NULL) |
f7d82350 | 1703 | arg->op.prio = 0; |
14ffde0e VN |
1704 | else |
1705 | arg->op.prio = get_op_prio(arg->op.op); | |
f7d82350 | 1706 | |
14ffde0e | 1707 | return arg->op.prio; |
f7d82350 SR |
1708 | } |
1709 | ||
1710 | /* Note, *tok does not get freed, but will most likely be saved */ | |
1711 | static enum event_type | |
1712 | process_op(struct event_format *event, struct print_arg *arg, char **tok) | |
1713 | { | |
1714 | struct print_arg *left, *right = NULL; | |
1715 | enum event_type type; | |
1716 | char *token; | |
1717 | ||
1718 | /* the op is passed in via tok */ | |
1719 | token = *tok; | |
1720 | ||
1721 | if (arg->type == PRINT_OP && !arg->op.left) { | |
1722 | /* handle single op */ | |
1723 | if (token[1]) { | |
b8511920 | 1724 | do_warning("bad op token %s", token); |
f7d82350 SR |
1725 | goto out_free; |
1726 | } | |
1727 | switch (token[0]) { | |
1728 | case '~': | |
1729 | case '!': | |
1730 | case '+': | |
1731 | case '-': | |
1732 | break; | |
1733 | default: | |
1734 | do_warning("bad op token %s", token); | |
1735 | goto out_free; | |
1736 | ||
1737 | } | |
1738 | ||
1739 | /* make an empty left */ | |
1740 | left = alloc_arg(); | |
b1ac754b NK |
1741 | if (!left) |
1742 | goto out_warn_free; | |
1743 | ||
f7d82350 SR |
1744 | left->type = PRINT_NULL; |
1745 | arg->op.left = left; | |
1746 | ||
1747 | right = alloc_arg(); | |
b1ac754b NK |
1748 | if (!right) |
1749 | goto out_warn_free; | |
1750 | ||
f7d82350 SR |
1751 | arg->op.right = right; |
1752 | ||
1753 | /* do not free the token, it belongs to an op */ | |
1754 | *tok = NULL; | |
1755 | type = process_arg(event, right, tok); | |
1756 | ||
1757 | } else if (strcmp(token, "?") == 0) { | |
1758 | ||
1759 | left = alloc_arg(); | |
b1ac754b NK |
1760 | if (!left) |
1761 | goto out_warn_free; | |
1762 | ||
f7d82350 SR |
1763 | /* copy the top arg to the left */ |
1764 | *left = *arg; | |
1765 | ||
1766 | arg->type = PRINT_OP; | |
1767 | arg->op.op = token; | |
1768 | arg->op.left = left; | |
1769 | arg->op.prio = 0; | |
1770 | ||
41e51a28 | 1771 | /* it will set arg->op.right */ |
f7d82350 SR |
1772 | type = process_cond(event, arg, tok); |
1773 | ||
1774 | } else if (strcmp(token, ">>") == 0 || | |
1775 | strcmp(token, "<<") == 0 || | |
1776 | strcmp(token, "&") == 0 || | |
1777 | strcmp(token, "|") == 0 || | |
1778 | strcmp(token, "&&") == 0 || | |
1779 | strcmp(token, "||") == 0 || | |
1780 | strcmp(token, "-") == 0 || | |
1781 | strcmp(token, "+") == 0 || | |
1782 | strcmp(token, "*") == 0 || | |
1783 | strcmp(token, "^") == 0 || | |
1784 | strcmp(token, "/") == 0 || | |
1785 | strcmp(token, "<") == 0 || | |
1786 | strcmp(token, ">") == 0 || | |
ff582680 NK |
1787 | strcmp(token, "<=") == 0 || |
1788 | strcmp(token, ">=") == 0 || | |
f7d82350 SR |
1789 | strcmp(token, "==") == 0 || |
1790 | strcmp(token, "!=") == 0) { | |
1791 | ||
1792 | left = alloc_arg(); | |
b1ac754b NK |
1793 | if (!left) |
1794 | goto out_warn_free; | |
f7d82350 SR |
1795 | |
1796 | /* copy the top arg to the left */ | |
1797 | *left = *arg; | |
1798 | ||
1799 | arg->type = PRINT_OP; | |
1800 | arg->op.op = token; | |
1801 | arg->op.left = left; | |
41e51a28 | 1802 | arg->op.right = NULL; |
f7d82350 | 1803 | |
14ffde0e VN |
1804 | if (set_op_prio(arg) == -1) { |
1805 | event->flags |= EVENT_FL_FAILED; | |
d1de1087 NK |
1806 | /* arg->op.op (= token) will be freed at out_free */ |
1807 | arg->op.op = NULL; | |
14ffde0e VN |
1808 | goto out_free; |
1809 | } | |
f7d82350 SR |
1810 | |
1811 | type = read_token_item(&token); | |
1812 | *tok = token; | |
1813 | ||
1814 | /* could just be a type pointer */ | |
1815 | if ((strcmp(arg->op.op, "*") == 0) && | |
1816 | type == EVENT_DELIM && (strcmp(token, ")") == 0)) { | |
d286447f NK |
1817 | char *new_atom; |
1818 | ||
a6d2a61a ACM |
1819 | if (left->type != PRINT_ATOM) { |
1820 | do_warning("bad pointer type"); | |
1821 | goto out_free; | |
1822 | } | |
d286447f | 1823 | new_atom = realloc(left->atom.atom, |
f7d82350 | 1824 | strlen(left->atom.atom) + 3); |
d286447f | 1825 | if (!new_atom) |
b1ac754b | 1826 | goto out_warn_free; |
d286447f NK |
1827 | |
1828 | left->atom.atom = new_atom; | |
f7d82350 SR |
1829 | strcat(left->atom.atom, " *"); |
1830 | free(arg->op.op); | |
1831 | *arg = *left; | |
1832 | free(left); | |
1833 | ||
1834 | return type; | |
1835 | } | |
1836 | ||
1837 | right = alloc_arg(); | |
b1ac754b NK |
1838 | if (!right) |
1839 | goto out_warn_free; | |
1840 | ||
f7d82350 SR |
1841 | type = process_arg_token(event, right, tok, type); |
1842 | arg->op.right = right; | |
1843 | ||
1844 | } else if (strcmp(token, "[") == 0) { | |
1845 | ||
1846 | left = alloc_arg(); | |
b1ac754b NK |
1847 | if (!left) |
1848 | goto out_warn_free; | |
1849 | ||
f7d82350 SR |
1850 | *left = *arg; |
1851 | ||
1852 | arg->type = PRINT_OP; | |
1853 | arg->op.op = token; | |
1854 | arg->op.left = left; | |
1855 | ||
1856 | arg->op.prio = 0; | |
1857 | ||
41e51a28 | 1858 | /* it will set arg->op.right */ |
f7d82350 SR |
1859 | type = process_array(event, arg, tok); |
1860 | ||
1861 | } else { | |
1862 | do_warning("unknown op '%s'", token); | |
1863 | event->flags |= EVENT_FL_FAILED; | |
1864 | /* the arg is now the left side */ | |
1865 | goto out_free; | |
1866 | } | |
1867 | ||
1868 | if (type == EVENT_OP && strcmp(*tok, ":") != 0) { | |
1869 | int prio; | |
1870 | ||
1871 | /* higher prios need to be closer to the root */ | |
1872 | prio = get_op_prio(*tok); | |
1873 | ||
1874 | if (prio > arg->op.prio) | |
1875 | return process_op(event, arg, tok); | |
1876 | ||
1877 | return process_op(event, right, tok); | |
1878 | } | |
1879 | ||
1880 | return type; | |
1881 | ||
b1ac754b NK |
1882 | out_warn_free: |
1883 | do_warning("%s: not enough memory!", __func__); | |
1884 | out_free: | |
f7d82350 SR |
1885 | free_token(token); |
1886 | *tok = NULL; | |
1887 | return EVENT_ERROR; | |
1888 | } | |
1889 | ||
1890 | static enum event_type | |
1d037ca1 | 1891 | process_entry(struct event_format *event __maybe_unused, struct print_arg *arg, |
f7d82350 SR |
1892 | char **tok) |
1893 | { | |
1894 | enum event_type type; | |
1895 | char *field; | |
1896 | char *token; | |
1897 | ||
1898 | if (read_expected(EVENT_OP, "->") < 0) | |
1899 | goto out_err; | |
1900 | ||
1901 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
1902 | goto out_free; | |
1903 | field = token; | |
1904 | ||
1905 | arg->type = PRINT_FIELD; | |
1906 | arg->field.name = field; | |
1907 | ||
5205aec9 TZ |
1908 | if (is_flag_field) { |
1909 | arg->field.field = pevent_find_any_field(event, arg->field.name); | |
1910 | arg->field.field->flags |= FIELD_IS_FLAG; | |
1911 | is_flag_field = 0; | |
1912 | } else if (is_symbolic_field) { | |
1913 | arg->field.field = pevent_find_any_field(event, arg->field.name); | |
1914 | arg->field.field->flags |= FIELD_IS_SYMBOLIC; | |
1915 | is_symbolic_field = 0; | |
1916 | } | |
1917 | ||
f7d82350 SR |
1918 | type = read_token(&token); |
1919 | *tok = token; | |
1920 | ||
1921 | return type; | |
1922 | ||
1923 | out_free: | |
1924 | free_token(token); | |
1925 | out_err: | |
1926 | *tok = NULL; | |
1927 | return EVENT_ERROR; | |
1928 | } | |
1929 | ||
1930 | static char *arg_eval (struct print_arg *arg); | |
1931 | ||
1932 | static unsigned long long | |
1933 | eval_type_str(unsigned long long val, const char *type, int pointer) | |
1934 | { | |
1935 | int sign = 0; | |
1936 | char *ref; | |
1937 | int len; | |
1938 | ||
1939 | len = strlen(type); | |
1940 | ||
1941 | if (pointer) { | |
1942 | ||
1943 | if (type[len-1] != '*') { | |
1944 | do_warning("pointer expected with non pointer type"); | |
1945 | return val; | |
1946 | } | |
1947 | ||
a6d2a61a ACM |
1948 | ref = malloc(len); |
1949 | if (!ref) { | |
1950 | do_warning("%s: not enough memory!", __func__); | |
1951 | return val; | |
1952 | } | |
f7d82350 SR |
1953 | memcpy(ref, type, len); |
1954 | ||
1955 | /* chop off the " *" */ | |
1956 | ref[len - 2] = 0; | |
1957 | ||
1958 | val = eval_type_str(val, ref, 0); | |
1959 | free(ref); | |
1960 | return val; | |
1961 | } | |
1962 | ||
1963 | /* check if this is a pointer */ | |
1964 | if (type[len - 1] == '*') | |
1965 | return val; | |
1966 | ||
1967 | /* Try to figure out the arg size*/ | |
1968 | if (strncmp(type, "struct", 6) == 0) | |
1969 | /* all bets off */ | |
1970 | return val; | |
1971 | ||
1972 | if (strcmp(type, "u8") == 0) | |
1973 | return val & 0xff; | |
1974 | ||
1975 | if (strcmp(type, "u16") == 0) | |
1976 | return val & 0xffff; | |
1977 | ||
1978 | if (strcmp(type, "u32") == 0) | |
1979 | return val & 0xffffffff; | |
1980 | ||
1981 | if (strcmp(type, "u64") == 0 || | |
1982 | strcmp(type, "s64")) | |
1983 | return val; | |
1984 | ||
1985 | if (strcmp(type, "s8") == 0) | |
1986 | return (unsigned long long)(char)val & 0xff; | |
1987 | ||
1988 | if (strcmp(type, "s16") == 0) | |
1989 | return (unsigned long long)(short)val & 0xffff; | |
1990 | ||
1991 | if (strcmp(type, "s32") == 0) | |
1992 | return (unsigned long long)(int)val & 0xffffffff; | |
1993 | ||
1994 | if (strncmp(type, "unsigned ", 9) == 0) { | |
1995 | sign = 0; | |
1996 | type += 9; | |
1997 | } | |
1998 | ||
1999 | if (strcmp(type, "char") == 0) { | |
2000 | if (sign) | |
2001 | return (unsigned long long)(char)val & 0xff; | |
2002 | else | |
2003 | return val & 0xff; | |
2004 | } | |
2005 | ||
2006 | if (strcmp(type, "short") == 0) { | |
2007 | if (sign) | |
2008 | return (unsigned long long)(short)val & 0xffff; | |
2009 | else | |
2010 | return val & 0xffff; | |
2011 | } | |
2012 | ||
2013 | if (strcmp(type, "int") == 0) { | |
2014 | if (sign) | |
2015 | return (unsigned long long)(int)val & 0xffffffff; | |
2016 | else | |
2017 | return val & 0xffffffff; | |
2018 | } | |
2019 | ||
2020 | return val; | |
2021 | } | |
2022 | ||
2023 | /* | |
2024 | * Try to figure out the type. | |
2025 | */ | |
2026 | static unsigned long long | |
2027 | eval_type(unsigned long long val, struct print_arg *arg, int pointer) | |
2028 | { | |
a6d2a61a ACM |
2029 | if (arg->type != PRINT_TYPE) { |
2030 | do_warning("expected type argument"); | |
2031 | return 0; | |
2032 | } | |
f7d82350 SR |
2033 | |
2034 | return eval_type_str(val, arg->typecast.type, pointer); | |
2035 | } | |
2036 | ||
d69afed5 | 2037 | static int arg_num_eval(struct print_arg *arg, long long *val) |
f7d82350 SR |
2038 | { |
2039 | long long left, right; | |
d69afed5 | 2040 | int ret = 1; |
f7d82350 SR |
2041 | |
2042 | switch (arg->type) { | |
2043 | case PRINT_ATOM: | |
d69afed5 | 2044 | *val = strtoll(arg->atom.atom, NULL, 0); |
f7d82350 SR |
2045 | break; |
2046 | case PRINT_TYPE: | |
d69afed5 VN |
2047 | ret = arg_num_eval(arg->typecast.item, val); |
2048 | if (!ret) | |
2049 | break; | |
2050 | *val = eval_type(*val, arg, 0); | |
f7d82350 SR |
2051 | break; |
2052 | case PRINT_OP: | |
2053 | switch (arg->op.op[0]) { | |
2054 | case '|': | |
d69afed5 VN |
2055 | ret = arg_num_eval(arg->op.left, &left); |
2056 | if (!ret) | |
2057 | break; | |
2058 | ret = arg_num_eval(arg->op.right, &right); | |
2059 | if (!ret) | |
2060 | break; | |
f7d82350 | 2061 | if (arg->op.op[1]) |
d69afed5 | 2062 | *val = left || right; |
f7d82350 | 2063 | else |
d69afed5 | 2064 | *val = left | right; |
f7d82350 SR |
2065 | break; |
2066 | case '&': | |
d69afed5 VN |
2067 | ret = arg_num_eval(arg->op.left, &left); |
2068 | if (!ret) | |
2069 | break; | |
2070 | ret = arg_num_eval(arg->op.right, &right); | |
2071 | if (!ret) | |
2072 | break; | |
f7d82350 | 2073 | if (arg->op.op[1]) |
d69afed5 | 2074 | *val = left && right; |
f7d82350 | 2075 | else |
d69afed5 | 2076 | *val = left & right; |
f7d82350 SR |
2077 | break; |
2078 | case '<': | |
d69afed5 VN |
2079 | ret = arg_num_eval(arg->op.left, &left); |
2080 | if (!ret) | |
2081 | break; | |
2082 | ret = arg_num_eval(arg->op.right, &right); | |
2083 | if (!ret) | |
2084 | break; | |
f7d82350 SR |
2085 | switch (arg->op.op[1]) { |
2086 | case 0: | |
d69afed5 | 2087 | *val = left < right; |
f7d82350 SR |
2088 | break; |
2089 | case '<': | |
d69afed5 | 2090 | *val = left << right; |
f7d82350 SR |
2091 | break; |
2092 | case '=': | |
d69afed5 | 2093 | *val = left <= right; |
f7d82350 SR |
2094 | break; |
2095 | default: | |
d69afed5 VN |
2096 | do_warning("unknown op '%s'", arg->op.op); |
2097 | ret = 0; | |
f7d82350 SR |
2098 | } |
2099 | break; | |
2100 | case '>': | |
d69afed5 VN |
2101 | ret = arg_num_eval(arg->op.left, &left); |
2102 | if (!ret) | |
2103 | break; | |
2104 | ret = arg_num_eval(arg->op.right, &right); | |
2105 | if (!ret) | |
2106 | break; | |
f7d82350 SR |
2107 | switch (arg->op.op[1]) { |
2108 | case 0: | |
d69afed5 | 2109 | *val = left > right; |
f7d82350 SR |
2110 | break; |
2111 | case '>': | |
d69afed5 | 2112 | *val = left >> right; |
f7d82350 SR |
2113 | break; |
2114 | case '=': | |
d69afed5 | 2115 | *val = left >= right; |
f7d82350 SR |
2116 | break; |
2117 | default: | |
d69afed5 VN |
2118 | do_warning("unknown op '%s'", arg->op.op); |
2119 | ret = 0; | |
f7d82350 SR |
2120 | } |
2121 | break; | |
2122 | case '=': | |
d69afed5 VN |
2123 | ret = arg_num_eval(arg->op.left, &left); |
2124 | if (!ret) | |
2125 | break; | |
2126 | ret = arg_num_eval(arg->op.right, &right); | |
2127 | if (!ret) | |
2128 | break; | |
f7d82350 | 2129 | |
d69afed5 VN |
2130 | if (arg->op.op[1] != '=') { |
2131 | do_warning("unknown op '%s'", arg->op.op); | |
2132 | ret = 0; | |
2133 | } else | |
2134 | *val = left == right; | |
f7d82350 SR |
2135 | break; |
2136 | case '!': | |
d69afed5 VN |
2137 | ret = arg_num_eval(arg->op.left, &left); |
2138 | if (!ret) | |
2139 | break; | |
2140 | ret = arg_num_eval(arg->op.right, &right); | |
2141 | if (!ret) | |
2142 | break; | |
f7d82350 SR |
2143 | |
2144 | switch (arg->op.op[1]) { | |
2145 | case '=': | |
d69afed5 | 2146 | *val = left != right; |
f7d82350 SR |
2147 | break; |
2148 | default: | |
d69afed5 VN |
2149 | do_warning("unknown op '%s'", arg->op.op); |
2150 | ret = 0; | |
f7d82350 SR |
2151 | } |
2152 | break; | |
2153 | case '-': | |
2154 | /* check for negative */ | |
2155 | if (arg->op.left->type == PRINT_NULL) | |
2156 | left = 0; | |
2157 | else | |
d69afed5 VN |
2158 | ret = arg_num_eval(arg->op.left, &left); |
2159 | if (!ret) | |
2160 | break; | |
2161 | ret = arg_num_eval(arg->op.right, &right); | |
2162 | if (!ret) | |
2163 | break; | |
2164 | *val = left - right; | |
f7d82350 | 2165 | break; |
b4828598 VN |
2166 | case '+': |
2167 | if (arg->op.left->type == PRINT_NULL) | |
2168 | left = 0; | |
2169 | else | |
2170 | ret = arg_num_eval(arg->op.left, &left); | |
2171 | if (!ret) | |
2172 | break; | |
2173 | ret = arg_num_eval(arg->op.right, &right); | |
2174 | if (!ret) | |
2175 | break; | |
2176 | *val = left + right; | |
2177 | break; | |
f7d82350 | 2178 | default: |
d69afed5 VN |
2179 | do_warning("unknown op '%s'", arg->op.op); |
2180 | ret = 0; | |
f7d82350 SR |
2181 | } |
2182 | break; | |
2183 | ||
2184 | case PRINT_NULL: | |
2185 | case PRINT_FIELD ... PRINT_SYMBOL: | |
2186 | case PRINT_STRING: | |
2187 | case PRINT_BSTRING: | |
2188 | default: | |
d69afed5 VN |
2189 | do_warning("invalid eval type %d", arg->type); |
2190 | ret = 0; | |
f7d82350 SR |
2191 | |
2192 | } | |
d69afed5 | 2193 | return ret; |
f7d82350 SR |
2194 | } |
2195 | ||
2196 | static char *arg_eval (struct print_arg *arg) | |
2197 | { | |
2198 | long long val; | |
2199 | static char buf[20]; | |
2200 | ||
2201 | switch (arg->type) { | |
2202 | case PRINT_ATOM: | |
2203 | return arg->atom.atom; | |
2204 | case PRINT_TYPE: | |
2205 | return arg_eval(arg->typecast.item); | |
2206 | case PRINT_OP: | |
d69afed5 VN |
2207 | if (!arg_num_eval(arg, &val)) |
2208 | break; | |
f7d82350 SR |
2209 | sprintf(buf, "%lld", val); |
2210 | return buf; | |
2211 | ||
2212 | case PRINT_NULL: | |
2213 | case PRINT_FIELD ... PRINT_SYMBOL: | |
2214 | case PRINT_STRING: | |
2215 | case PRINT_BSTRING: | |
2216 | default: | |
a6d2a61a | 2217 | do_warning("invalid eval type %d", arg->type); |
f7d82350 SR |
2218 | break; |
2219 | } | |
2220 | ||
2221 | return NULL; | |
2222 | } | |
2223 | ||
2224 | static enum event_type | |
2225 | process_fields(struct event_format *event, struct print_flag_sym **list, char **tok) | |
2226 | { | |
2227 | enum event_type type; | |
2228 | struct print_arg *arg = NULL; | |
2229 | struct print_flag_sym *field; | |
2230 | char *token = *tok; | |
2231 | char *value; | |
2232 | ||
2233 | do { | |
2234 | free_token(token); | |
2235 | type = read_token_item(&token); | |
2236 | if (test_type_token(type, token, EVENT_OP, "{")) | |
2237 | break; | |
2238 | ||
2239 | arg = alloc_arg(); | |
b1ac754b NK |
2240 | if (!arg) |
2241 | goto out_free; | |
f7d82350 SR |
2242 | |
2243 | free_token(token); | |
2244 | type = process_arg(event, arg, &token); | |
00b9da72 SH |
2245 | |
2246 | if (type == EVENT_OP) | |
2247 | type = process_op(event, arg, &token); | |
2248 | ||
2249 | if (type == EVENT_ERROR) | |
2250 | goto out_free; | |
2251 | ||
f7d82350 SR |
2252 | if (test_type_token(type, token, EVENT_DELIM, ",")) |
2253 | goto out_free; | |
2254 | ||
87162d81 ACM |
2255 | field = calloc(1, sizeof(*field)); |
2256 | if (!field) | |
2257 | goto out_free; | |
f7d82350 SR |
2258 | |
2259 | value = arg_eval(arg); | |
d69afed5 | 2260 | if (value == NULL) |
f8c49d26 | 2261 | goto out_free_field; |
f7d82350 | 2262 | field->value = strdup(value); |
ca63858e | 2263 | if (field->value == NULL) |
f8c49d26 | 2264 | goto out_free_field; |
f7d82350 SR |
2265 | |
2266 | free_arg(arg); | |
2267 | arg = alloc_arg(); | |
b1ac754b NK |
2268 | if (!arg) |
2269 | goto out_free; | |
f7d82350 SR |
2270 | |
2271 | free_token(token); | |
2272 | type = process_arg(event, arg, &token); | |
2273 | if (test_type_token(type, token, EVENT_OP, "}")) | |
f8c49d26 | 2274 | goto out_free_field; |
f7d82350 SR |
2275 | |
2276 | value = arg_eval(arg); | |
d69afed5 | 2277 | if (value == NULL) |
f8c49d26 | 2278 | goto out_free_field; |
f7d82350 | 2279 | field->str = strdup(value); |
ca63858e | 2280 | if (field->str == NULL) |
f8c49d26 | 2281 | goto out_free_field; |
f7d82350 SR |
2282 | free_arg(arg); |
2283 | arg = NULL; | |
2284 | ||
2285 | *list = field; | |
2286 | list = &field->next; | |
2287 | ||
2288 | free_token(token); | |
2289 | type = read_token_item(&token); | |
2290 | } while (type == EVENT_DELIM && strcmp(token, ",") == 0); | |
2291 | ||
2292 | *tok = token; | |
2293 | return type; | |
2294 | ||
f8c49d26 NK |
2295 | out_free_field: |
2296 | free_flag_sym(field); | |
f7d82350 SR |
2297 | out_free: |
2298 | free_arg(arg); | |
2299 | free_token(token); | |
2300 | *tok = NULL; | |
2301 | ||
2302 | return EVENT_ERROR; | |
2303 | } | |
2304 | ||
2305 | static enum event_type | |
2306 | process_flags(struct event_format *event, struct print_arg *arg, char **tok) | |
2307 | { | |
2308 | struct print_arg *field; | |
2309 | enum event_type type; | |
2310 | char *token; | |
2311 | ||
2312 | memset(arg, 0, sizeof(*arg)); | |
2313 | arg->type = PRINT_FLAGS; | |
2314 | ||
2315 | field = alloc_arg(); | |
b1ac754b NK |
2316 | if (!field) { |
2317 | do_warning("%s: not enough memory!", __func__); | |
2318 | goto out_free; | |
2319 | } | |
f7d82350 SR |
2320 | |
2321 | type = process_arg(event, field, &token); | |
2322 | ||
2323 | /* Handle operations in the first argument */ | |
2324 | while (type == EVENT_OP) | |
2325 | type = process_op(event, field, &token); | |
2326 | ||
2327 | if (test_type_token(type, token, EVENT_DELIM, ",")) | |
70d93044 | 2328 | goto out_free_field; |
f7d82350 SR |
2329 | free_token(token); |
2330 | ||
2331 | arg->flags.field = field; | |
2332 | ||
2333 | type = read_token_item(&token); | |
2334 | if (event_item_type(type)) { | |
2335 | arg->flags.delim = token; | |
2336 | type = read_token_item(&token); | |
2337 | } | |
2338 | ||
2339 | if (test_type_token(type, token, EVENT_DELIM, ",")) | |
2340 | goto out_free; | |
2341 | ||
2342 | type = process_fields(event, &arg->flags.flags, &token); | |
2343 | if (test_type_token(type, token, EVENT_DELIM, ")")) | |
2344 | goto out_free; | |
2345 | ||
2346 | free_token(token); | |
2347 | type = read_token_item(tok); | |
2348 | return type; | |
2349 | ||
70d93044 NK |
2350 | out_free_field: |
2351 | free_arg(field); | |
2352 | out_free: | |
f7d82350 SR |
2353 | free_token(token); |
2354 | *tok = NULL; | |
2355 | return EVENT_ERROR; | |
2356 | } | |
2357 | ||
2358 | static enum event_type | |
2359 | process_symbols(struct event_format *event, struct print_arg *arg, char **tok) | |
2360 | { | |
2361 | struct print_arg *field; | |
2362 | enum event_type type; | |
2363 | char *token; | |
2364 | ||
2365 | memset(arg, 0, sizeof(*arg)); | |
2366 | arg->type = PRINT_SYMBOL; | |
2367 | ||
2368 | field = alloc_arg(); | |
b1ac754b NK |
2369 | if (!field) { |
2370 | do_warning("%s: not enough memory!", __func__); | |
2371 | goto out_free; | |
2372 | } | |
f7d82350 SR |
2373 | |
2374 | type = process_arg(event, field, &token); | |
2375 | if (test_type_token(type, token, EVENT_DELIM, ",")) | |
70d93044 | 2376 | goto out_free_field; |
f7d82350 SR |
2377 | |
2378 | arg->symbol.field = field; | |
2379 | ||
2380 | type = process_fields(event, &arg->symbol.symbols, &token); | |
2381 | if (test_type_token(type, token, EVENT_DELIM, ")")) | |
2382 | goto out_free; | |
2383 | ||
2384 | free_token(token); | |
2385 | type = read_token_item(tok); | |
2386 | return type; | |
2387 | ||
70d93044 NK |
2388 | out_free_field: |
2389 | free_arg(field); | |
2390 | out_free: | |
f7d82350 SR |
2391 | free_token(token); |
2392 | *tok = NULL; | |
2393 | return EVENT_ERROR; | |
2394 | } | |
2395 | ||
e080e6f1 NK |
2396 | static enum event_type |
2397 | process_hex(struct event_format *event, struct print_arg *arg, char **tok) | |
2398 | { | |
2399 | struct print_arg *field; | |
2400 | enum event_type type; | |
2401 | char *token; | |
2402 | ||
2403 | memset(arg, 0, sizeof(*arg)); | |
2404 | arg->type = PRINT_HEX; | |
2405 | ||
2406 | field = alloc_arg(); | |
b1ac754b NK |
2407 | if (!field) { |
2408 | do_warning("%s: not enough memory!", __func__); | |
2409 | goto out_free; | |
2410 | } | |
2411 | ||
e080e6f1 NK |
2412 | type = process_arg(event, field, &token); |
2413 | ||
2414 | if (test_type_token(type, token, EVENT_DELIM, ",")) | |
2415 | goto out_free; | |
2416 | ||
2417 | arg->hex.field = field; | |
2418 | ||
2419 | free_token(token); | |
2420 | ||
2421 | field = alloc_arg(); | |
b1ac754b NK |
2422 | if (!field) { |
2423 | do_warning("%s: not enough memory!", __func__); | |
2424 | *tok = NULL; | |
2425 | return EVENT_ERROR; | |
2426 | } | |
2427 | ||
e080e6f1 NK |
2428 | type = process_arg(event, field, &token); |
2429 | ||
2430 | if (test_type_token(type, token, EVENT_DELIM, ")")) | |
2431 | goto out_free; | |
2432 | ||
2433 | arg->hex.size = field; | |
2434 | ||
2435 | free_token(token); | |
2436 | type = read_token_item(tok); | |
2437 | return type; | |
2438 | ||
2439 | out_free: | |
2440 | free_arg(field); | |
2441 | free_token(token); | |
2442 | *tok = NULL; | |
2443 | return EVENT_ERROR; | |
2444 | } | |
2445 | ||
f7d82350 SR |
2446 | static enum event_type |
2447 | process_dynamic_array(struct event_format *event, struct print_arg *arg, char **tok) | |
2448 | { | |
2449 | struct format_field *field; | |
2450 | enum event_type type; | |
2451 | char *token; | |
2452 | ||
2453 | memset(arg, 0, sizeof(*arg)); | |
2454 | arg->type = PRINT_DYNAMIC_ARRAY; | |
2455 | ||
2456 | /* | |
2457 | * The item within the parenthesis is another field that holds | |
2458 | * the index into where the array starts. | |
2459 | */ | |
2460 | type = read_token(&token); | |
2461 | *tok = token; | |
2462 | if (type != EVENT_ITEM) | |
2463 | goto out_free; | |
2464 | ||
2465 | /* Find the field */ | |
2466 | ||
2467 | field = pevent_find_field(event, token); | |
2468 | if (!field) | |
2469 | goto out_free; | |
2470 | ||
2471 | arg->dynarray.field = field; | |
2472 | arg->dynarray.index = 0; | |
2473 | ||
2474 | if (read_expected(EVENT_DELIM, ")") < 0) | |
2475 | goto out_free; | |
2476 | ||
2477 | free_token(token); | |
2478 | type = read_token_item(&token); | |
2479 | *tok = token; | |
2480 | if (type != EVENT_OP || strcmp(token, "[") != 0) | |
2481 | return type; | |
2482 | ||
2483 | free_token(token); | |
2484 | arg = alloc_arg(); | |
fba7a782 | 2485 | if (!arg) { |
b1ac754b NK |
2486 | do_warning("%s: not enough memory!", __func__); |
2487 | *tok = NULL; | |
2488 | return EVENT_ERROR; | |
2489 | } | |
2490 | ||
f7d82350 SR |
2491 | type = process_arg(event, arg, &token); |
2492 | if (type == EVENT_ERROR) | |
b3511d05 | 2493 | goto out_free_arg; |
f7d82350 SR |
2494 | |
2495 | if (!test_type_token(type, token, EVENT_OP, "]")) | |
b3511d05 | 2496 | goto out_free_arg; |
f7d82350 SR |
2497 | |
2498 | free_token(token); | |
2499 | type = read_token_item(tok); | |
2500 | return type; | |
2501 | ||
b3511d05 NK |
2502 | out_free_arg: |
2503 | free_arg(arg); | |
f7d82350 | 2504 | out_free: |
f7d82350 SR |
2505 | free_token(token); |
2506 | *tok = NULL; | |
2507 | return EVENT_ERROR; | |
2508 | } | |
2509 | ||
2510 | static enum event_type | |
2511 | process_paren(struct event_format *event, struct print_arg *arg, char **tok) | |
2512 | { | |
2513 | struct print_arg *item_arg; | |
2514 | enum event_type type; | |
2515 | char *token; | |
2516 | ||
2517 | type = process_arg(event, arg, &token); | |
2518 | ||
2519 | if (type == EVENT_ERROR) | |
2520 | goto out_free; | |
2521 | ||
2522 | if (type == EVENT_OP) | |
2523 | type = process_op(event, arg, &token); | |
2524 | ||
2525 | if (type == EVENT_ERROR) | |
2526 | goto out_free; | |
2527 | ||
2528 | if (test_type_token(type, token, EVENT_DELIM, ")")) | |
2529 | goto out_free; | |
2530 | ||
2531 | free_token(token); | |
2532 | type = read_token_item(&token); | |
2533 | ||
2534 | /* | |
2535 | * If the next token is an item or another open paren, then | |
2536 | * this was a typecast. | |
2537 | */ | |
2538 | if (event_item_type(type) || | |
2539 | (type == EVENT_DELIM && strcmp(token, "(") == 0)) { | |
2540 | ||
2541 | /* make this a typecast and contine */ | |
2542 | ||
2543 | /* prevous must be an atom */ | |
a6d2a61a ACM |
2544 | if (arg->type != PRINT_ATOM) { |
2545 | do_warning("previous needed to be PRINT_ATOM"); | |
2546 | goto out_free; | |
2547 | } | |
f7d82350 SR |
2548 | |
2549 | item_arg = alloc_arg(); | |
b1ac754b NK |
2550 | if (!item_arg) { |
2551 | do_warning("%s: not enough memory!", __func__); | |
2552 | goto out_free; | |
2553 | } | |
f7d82350 SR |
2554 | |
2555 | arg->type = PRINT_TYPE; | |
2556 | arg->typecast.type = arg->atom.atom; | |
2557 | arg->typecast.item = item_arg; | |
2558 | type = process_arg_token(event, item_arg, &token, type); | |
2559 | ||
2560 | } | |
2561 | ||
2562 | *tok = token; | |
2563 | return type; | |
2564 | ||
2565 | out_free: | |
2566 | free_token(token); | |
2567 | *tok = NULL; | |
2568 | return EVENT_ERROR; | |
2569 | } | |
2570 | ||
2571 | ||
2572 | static enum event_type | |
1d037ca1 IT |
2573 | process_str(struct event_format *event __maybe_unused, struct print_arg *arg, |
2574 | char **tok) | |
f7d82350 SR |
2575 | { |
2576 | enum event_type type; | |
2577 | char *token; | |
2578 | ||
2579 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
2580 | goto out_free; | |
2581 | ||
2582 | arg->type = PRINT_STRING; | |
2583 | arg->string.string = token; | |
2584 | arg->string.offset = -1; | |
2585 | ||
2586 | if (read_expected(EVENT_DELIM, ")") < 0) | |
2587 | goto out_err; | |
2588 | ||
2589 | type = read_token(&token); | |
2590 | *tok = token; | |
2591 | ||
2592 | return type; | |
2593 | ||
2594 | out_free: | |
2595 | free_token(token); | |
2596 | out_err: | |
2597 | *tok = NULL; | |
2598 | return EVENT_ERROR; | |
2599 | } | |
2600 | ||
2601 | static struct pevent_function_handler * | |
2602 | find_func_handler(struct pevent *pevent, char *func_name) | |
2603 | { | |
2604 | struct pevent_function_handler *func; | |
2605 | ||
101782ea SR |
2606 | if (!pevent) |
2607 | return NULL; | |
2608 | ||
f7d82350 SR |
2609 | for (func = pevent->func_handlers; func; func = func->next) { |
2610 | if (strcmp(func->name, func_name) == 0) | |
2611 | break; | |
2612 | } | |
2613 | ||
2614 | return func; | |
2615 | } | |
2616 | ||
2617 | static void remove_func_handler(struct pevent *pevent, char *func_name) | |
2618 | { | |
2619 | struct pevent_function_handler *func; | |
2620 | struct pevent_function_handler **next; | |
2621 | ||
2622 | next = &pevent->func_handlers; | |
2623 | while ((func = *next)) { | |
2624 | if (strcmp(func->name, func_name) == 0) { | |
2625 | *next = func->next; | |
2626 | free_func_handle(func); | |
2627 | break; | |
2628 | } | |
2629 | next = &func->next; | |
2630 | } | |
2631 | } | |
2632 | ||
2633 | static enum event_type | |
2634 | process_func_handler(struct event_format *event, struct pevent_function_handler *func, | |
2635 | struct print_arg *arg, char **tok) | |
2636 | { | |
2637 | struct print_arg **next_arg; | |
2638 | struct print_arg *farg; | |
2639 | enum event_type type; | |
2640 | char *token; | |
27f94d52 | 2641 | const char *test; |
f7d82350 SR |
2642 | int i; |
2643 | ||
2644 | arg->type = PRINT_FUNC; | |
2645 | arg->func.func = func; | |
2646 | ||
2647 | *tok = NULL; | |
2648 | ||
2649 | next_arg = &(arg->func.args); | |
2650 | for (i = 0; i < func->nr_args; i++) { | |
2651 | farg = alloc_arg(); | |
b1ac754b NK |
2652 | if (!farg) { |
2653 | do_warning("%s: not enough memory!", __func__); | |
2654 | return EVENT_ERROR; | |
2655 | } | |
2656 | ||
f7d82350 SR |
2657 | type = process_arg(event, farg, &token); |
2658 | if (i < (func->nr_args - 1)) | |
2659 | test = ","; | |
2660 | else | |
2661 | test = ")"; | |
2662 | ||
2663 | if (test_type_token(type, token, EVENT_DELIM, test)) { | |
2664 | free_arg(farg); | |
2665 | free_token(token); | |
2666 | return EVENT_ERROR; | |
2667 | } | |
2668 | ||
2669 | *next_arg = farg; | |
2670 | next_arg = &(farg->next); | |
2671 | free_token(token); | |
2672 | } | |
2673 | ||
2674 | type = read_token(&token); | |
2675 | *tok = token; | |
2676 | ||
2677 | return type; | |
2678 | } | |
2679 | ||
2680 | static enum event_type | |
2681 | process_function(struct event_format *event, struct print_arg *arg, | |
2682 | char *token, char **tok) | |
2683 | { | |
2684 | struct pevent_function_handler *func; | |
2685 | ||
2686 | if (strcmp(token, "__print_flags") == 0) { | |
2687 | free_token(token); | |
5205aec9 | 2688 | is_flag_field = 1; |
f7d82350 SR |
2689 | return process_flags(event, arg, tok); |
2690 | } | |
2691 | if (strcmp(token, "__print_symbolic") == 0) { | |
2692 | free_token(token); | |
5205aec9 | 2693 | is_symbolic_field = 1; |
f7d82350 SR |
2694 | return process_symbols(event, arg, tok); |
2695 | } | |
e080e6f1 NK |
2696 | if (strcmp(token, "__print_hex") == 0) { |
2697 | free_token(token); | |
2698 | return process_hex(event, arg, tok); | |
2699 | } | |
f7d82350 SR |
2700 | if (strcmp(token, "__get_str") == 0) { |
2701 | free_token(token); | |
2702 | return process_str(event, arg, tok); | |
2703 | } | |
2704 | if (strcmp(token, "__get_dynamic_array") == 0) { | |
2705 | free_token(token); | |
2706 | return process_dynamic_array(event, arg, tok); | |
2707 | } | |
2708 | ||
2709 | func = find_func_handler(event->pevent, token); | |
2710 | if (func) { | |
2711 | free_token(token); | |
2712 | return process_func_handler(event, func, arg, tok); | |
2713 | } | |
2714 | ||
2715 | do_warning("function %s not defined", token); | |
2716 | free_token(token); | |
2717 | return EVENT_ERROR; | |
2718 | } | |
2719 | ||
2720 | static enum event_type | |
2721 | process_arg_token(struct event_format *event, struct print_arg *arg, | |
2722 | char **tok, enum event_type type) | |
2723 | { | |
2724 | char *token; | |
2725 | char *atom; | |
2726 | ||
2727 | token = *tok; | |
2728 | ||
2729 | switch (type) { | |
2730 | case EVENT_ITEM: | |
2731 | if (strcmp(token, "REC") == 0) { | |
2732 | free_token(token); | |
2733 | type = process_entry(event, arg, &token); | |
2734 | break; | |
2735 | } | |
2736 | atom = token; | |
2737 | /* test the next token */ | |
2738 | type = read_token_item(&token); | |
2739 | ||
2740 | /* | |
2741 | * If the next token is a parenthesis, then this | |
2742 | * is a function. | |
2743 | */ | |
2744 | if (type == EVENT_DELIM && strcmp(token, "(") == 0) { | |
2745 | free_token(token); | |
2746 | token = NULL; | |
2747 | /* this will free atom. */ | |
2748 | type = process_function(event, arg, atom, &token); | |
2749 | break; | |
2750 | } | |
2751 | /* atoms can be more than one token long */ | |
2752 | while (type == EVENT_ITEM) { | |
d286447f NK |
2753 | char *new_atom; |
2754 | new_atom = realloc(atom, | |
2755 | strlen(atom) + strlen(token) + 2); | |
2756 | if (!new_atom) { | |
2757 | free(atom); | |
2758 | *tok = NULL; | |
2759 | free_token(token); | |
2760 | return EVENT_ERROR; | |
2761 | } | |
2762 | atom = new_atom; | |
f7d82350 SR |
2763 | strcat(atom, " "); |
2764 | strcat(atom, token); | |
2765 | free_token(token); | |
2766 | type = read_token_item(&token); | |
2767 | } | |
2768 | ||
2769 | arg->type = PRINT_ATOM; | |
2770 | arg->atom.atom = atom; | |
2771 | break; | |
2772 | ||
2773 | case EVENT_DQUOTE: | |
2774 | case EVENT_SQUOTE: | |
2775 | arg->type = PRINT_ATOM; | |
2776 | arg->atom.atom = token; | |
2777 | type = read_token_item(&token); | |
2778 | break; | |
2779 | case EVENT_DELIM: | |
2780 | if (strcmp(token, "(") == 0) { | |
2781 | free_token(token); | |
2782 | type = process_paren(event, arg, &token); | |
2783 | break; | |
2784 | } | |
2785 | case EVENT_OP: | |
2786 | /* handle single ops */ | |
2787 | arg->type = PRINT_OP; | |
2788 | arg->op.op = token; | |
2789 | arg->op.left = NULL; | |
2790 | type = process_op(event, arg, &token); | |
2791 | ||
2792 | /* On error, the op is freed */ | |
2793 | if (type == EVENT_ERROR) | |
2794 | arg->op.op = NULL; | |
2795 | ||
2796 | /* return error type if errored */ | |
2797 | break; | |
2798 | ||
2799 | case EVENT_ERROR ... EVENT_NEWLINE: | |
2800 | default: | |
a6d2a61a ACM |
2801 | do_warning("unexpected type %d", type); |
2802 | return EVENT_ERROR; | |
f7d82350 SR |
2803 | } |
2804 | *tok = token; | |
2805 | ||
2806 | return type; | |
2807 | } | |
2808 | ||
2809 | static int event_read_print_args(struct event_format *event, struct print_arg **list) | |
2810 | { | |
2811 | enum event_type type = EVENT_ERROR; | |
2812 | struct print_arg *arg; | |
2813 | char *token; | |
2814 | int args = 0; | |
2815 | ||
2816 | do { | |
2817 | if (type == EVENT_NEWLINE) { | |
2818 | type = read_token_item(&token); | |
2819 | continue; | |
2820 | } | |
2821 | ||
2822 | arg = alloc_arg(); | |
b1ac754b NK |
2823 | if (!arg) { |
2824 | do_warning("%s: not enough memory!", __func__); | |
2825 | return -1; | |
2826 | } | |
f7d82350 SR |
2827 | |
2828 | type = process_arg(event, arg, &token); | |
2829 | ||
2830 | if (type == EVENT_ERROR) { | |
2831 | free_token(token); | |
2832 | free_arg(arg); | |
2833 | return -1; | |
2834 | } | |
2835 | ||
2836 | *list = arg; | |
2837 | args++; | |
2838 | ||
2839 | if (type == EVENT_OP) { | |
2840 | type = process_op(event, arg, &token); | |
2841 | free_token(token); | |
2842 | if (type == EVENT_ERROR) { | |
2843 | *list = NULL; | |
2844 | free_arg(arg); | |
2845 | return -1; | |
2846 | } | |
2847 | list = &arg->next; | |
2848 | continue; | |
2849 | } | |
2850 | ||
2851 | if (type == EVENT_DELIM && strcmp(token, ",") == 0) { | |
2852 | free_token(token); | |
2853 | *list = arg; | |
2854 | list = &arg->next; | |
2855 | continue; | |
2856 | } | |
2857 | break; | |
2858 | } while (type != EVENT_NONE); | |
2859 | ||
2860 | if (type != EVENT_NONE && type != EVENT_ERROR) | |
2861 | free_token(token); | |
2862 | ||
2863 | return args; | |
2864 | } | |
2865 | ||
2866 | static int event_read_print(struct event_format *event) | |
2867 | { | |
2868 | enum event_type type; | |
2869 | char *token; | |
2870 | int ret; | |
2871 | ||
2872 | if (read_expected_item(EVENT_ITEM, "print") < 0) | |
2873 | return -1; | |
2874 | ||
2875 | if (read_expected(EVENT_ITEM, "fmt") < 0) | |
2876 | return -1; | |
2877 | ||
2878 | if (read_expected(EVENT_OP, ":") < 0) | |
2879 | return -1; | |
2880 | ||
2881 | if (read_expect_type(EVENT_DQUOTE, &token) < 0) | |
2882 | goto fail; | |
2883 | ||
2884 | concat: | |
2885 | event->print_fmt.format = token; | |
2886 | event->print_fmt.args = NULL; | |
2887 | ||
2888 | /* ok to have no arg */ | |
2889 | type = read_token_item(&token); | |
2890 | ||
2891 | if (type == EVENT_NONE) | |
2892 | return 0; | |
2893 | ||
2894 | /* Handle concatenation of print lines */ | |
2895 | if (type == EVENT_DQUOTE) { | |
2896 | char *cat; | |
2897 | ||
0dbca1e3 ACM |
2898 | if (asprintf(&cat, "%s%s", event->print_fmt.format, token) < 0) |
2899 | goto fail; | |
f7d82350 SR |
2900 | free_token(token); |
2901 | free_token(event->print_fmt.format); | |
2902 | event->print_fmt.format = NULL; | |
2903 | token = cat; | |
2904 | goto concat; | |
2905 | } | |
2906 | ||
2907 | if (test_type_token(type, token, EVENT_DELIM, ",")) | |
2908 | goto fail; | |
2909 | ||
2910 | free_token(token); | |
2911 | ||
2912 | ret = event_read_print_args(event, &event->print_fmt.args); | |
2913 | if (ret < 0) | |
2914 | return -1; | |
2915 | ||
2916 | return ret; | |
2917 | ||
2918 | fail: | |
2919 | free_token(token); | |
2920 | return -1; | |
2921 | } | |
2922 | ||
2923 | /** | |
2924 | * pevent_find_common_field - return a common field by event | |
2925 | * @event: handle for the event | |
2926 | * @name: the name of the common field to return | |
2927 | * | |
2928 | * Returns a common field from the event by the given @name. | |
2929 | * This only searchs the common fields and not all field. | |
2930 | */ | |
2931 | struct format_field * | |
2932 | pevent_find_common_field(struct event_format *event, const char *name) | |
2933 | { | |
2934 | struct format_field *format; | |
2935 | ||
2936 | for (format = event->format.common_fields; | |
2937 | format; format = format->next) { | |
2938 | if (strcmp(format->name, name) == 0) | |
2939 | break; | |
2940 | } | |
2941 | ||
2942 | return format; | |
2943 | } | |
2944 | ||
2945 | /** | |
2946 | * pevent_find_field - find a non-common field | |
2947 | * @event: handle for the event | |
2948 | * @name: the name of the non-common field | |
2949 | * | |
2950 | * Returns a non-common field by the given @name. | |
2951 | * This does not search common fields. | |
2952 | */ | |
2953 | struct format_field * | |
2954 | pevent_find_field(struct event_format *event, const char *name) | |
2955 | { | |
2956 | struct format_field *format; | |
2957 | ||
2958 | for (format = event->format.fields; | |
2959 | format; format = format->next) { | |
2960 | if (strcmp(format->name, name) == 0) | |
2961 | break; | |
2962 | } | |
2963 | ||
2964 | return format; | |
2965 | } | |
2966 | ||
2967 | /** | |
2968 | * pevent_find_any_field - find any field by name | |
2969 | * @event: handle for the event | |
2970 | * @name: the name of the field | |
2971 | * | |
2972 | * Returns a field by the given @name. | |
2973 | * This searchs the common field names first, then | |
2974 | * the non-common ones if a common one was not found. | |
2975 | */ | |
2976 | struct format_field * | |
2977 | pevent_find_any_field(struct event_format *event, const char *name) | |
2978 | { | |
2979 | struct format_field *format; | |
2980 | ||
2981 | format = pevent_find_common_field(event, name); | |
2982 | if (format) | |
2983 | return format; | |
2984 | return pevent_find_field(event, name); | |
2985 | } | |
2986 | ||
2987 | /** | |
2988 | * pevent_read_number - read a number from data | |
2989 | * @pevent: handle for the pevent | |
2990 | * @ptr: the raw data | |
2991 | * @size: the size of the data that holds the number | |
2992 | * | |
2993 | * Returns the number (converted to host) from the | |
2994 | * raw data. | |
2995 | */ | |
2996 | unsigned long long pevent_read_number(struct pevent *pevent, | |
2997 | const void *ptr, int size) | |
2998 | { | |
2999 | switch (size) { | |
3000 | case 1: | |
3001 | return *(unsigned char *)ptr; | |
3002 | case 2: | |
3003 | return data2host2(pevent, ptr); | |
3004 | case 4: | |
3005 | return data2host4(pevent, ptr); | |
3006 | case 8: | |
3007 | return data2host8(pevent, ptr); | |
3008 | default: | |
3009 | /* BUG! */ | |
3010 | return 0; | |
3011 | } | |
3012 | } | |
3013 | ||
3014 | /** | |
3015 | * pevent_read_number_field - read a number from data | |
3016 | * @field: a handle to the field | |
3017 | * @data: the raw data to read | |
3018 | * @value: the value to place the number in | |
3019 | * | |
3020 | * Reads raw data according to a field offset and size, | |
3021 | * and translates it into @value. | |
3022 | * | |
3023 | * Returns 0 on success, -1 otherwise. | |
3024 | */ | |
3025 | int pevent_read_number_field(struct format_field *field, const void *data, | |
3026 | unsigned long long *value) | |
3027 | { | |
3028 | if (!field) | |
3029 | return -1; | |
3030 | switch (field->size) { | |
3031 | case 1: | |
3032 | case 2: | |
3033 | case 4: | |
3034 | case 8: | |
3035 | *value = pevent_read_number(field->event->pevent, | |
3036 | data + field->offset, field->size); | |
3037 | return 0; | |
3038 | default: | |
3039 | return -1; | |
3040 | } | |
3041 | } | |
3042 | ||
3043 | static int get_common_info(struct pevent *pevent, | |
3044 | const char *type, int *offset, int *size) | |
3045 | { | |
3046 | struct event_format *event; | |
3047 | struct format_field *field; | |
3048 | ||
3049 | /* | |
3050 | * All events should have the same common elements. | |
3051 | * Pick any event to find where the type is; | |
3052 | */ | |
a6d2a61a ACM |
3053 | if (!pevent->events) { |
3054 | do_warning("no event_list!"); | |
3055 | return -1; | |
3056 | } | |
f7d82350 SR |
3057 | |
3058 | event = pevent->events[0]; | |
3059 | field = pevent_find_common_field(event, type); | |
3060 | if (!field) | |
0866a97e | 3061 | return -1; |
f7d82350 SR |
3062 | |
3063 | *offset = field->offset; | |
3064 | *size = field->size; | |
3065 | ||
3066 | return 0; | |
3067 | } | |
3068 | ||
3069 | static int __parse_common(struct pevent *pevent, void *data, | |
3070 | int *size, int *offset, const char *name) | |
3071 | { | |
3072 | int ret; | |
3073 | ||
3074 | if (!*size) { | |
3075 | ret = get_common_info(pevent, name, offset, size); | |
3076 | if (ret < 0) | |
3077 | return ret; | |
3078 | } | |
3079 | return pevent_read_number(pevent, data + *offset, *size); | |
3080 | } | |
3081 | ||
3082 | static int trace_parse_common_type(struct pevent *pevent, void *data) | |
3083 | { | |
3084 | return __parse_common(pevent, data, | |
3085 | &pevent->type_size, &pevent->type_offset, | |
3086 | "common_type"); | |
3087 | } | |
3088 | ||
3089 | static int parse_common_pid(struct pevent *pevent, void *data) | |
3090 | { | |
3091 | return __parse_common(pevent, data, | |
3092 | &pevent->pid_size, &pevent->pid_offset, | |
3093 | "common_pid"); | |
3094 | } | |
3095 | ||
3096 | static int parse_common_pc(struct pevent *pevent, void *data) | |
3097 | { | |
3098 | return __parse_common(pevent, data, | |
3099 | &pevent->pc_size, &pevent->pc_offset, | |
3100 | "common_preempt_count"); | |
3101 | } | |
3102 | ||
3103 | static int parse_common_flags(struct pevent *pevent, void *data) | |
3104 | { | |
3105 | return __parse_common(pevent, data, | |
3106 | &pevent->flags_size, &pevent->flags_offset, | |
3107 | "common_flags"); | |
3108 | } | |
3109 | ||
3110 | static int parse_common_lock_depth(struct pevent *pevent, void *data) | |
3111 | { | |
0866a97e SR |
3112 | return __parse_common(pevent, data, |
3113 | &pevent->ld_size, &pevent->ld_offset, | |
3114 | "common_lock_depth"); | |
3115 | } | |
f7d82350 | 3116 | |
0866a97e SR |
3117 | static int parse_common_migrate_disable(struct pevent *pevent, void *data) |
3118 | { | |
3119 | return __parse_common(pevent, data, | |
3120 | &pevent->ld_size, &pevent->ld_offset, | |
3121 | "common_migrate_disable"); | |
f7d82350 SR |
3122 | } |
3123 | ||
3124 | static int events_id_cmp(const void *a, const void *b); | |
3125 | ||
3126 | /** | |
3127 | * pevent_find_event - find an event by given id | |
3128 | * @pevent: a handle to the pevent | |
3129 | * @id: the id of the event | |
3130 | * | |
3131 | * Returns an event that has a given @id. | |
3132 | */ | |
3133 | struct event_format *pevent_find_event(struct pevent *pevent, int id) | |
3134 | { | |
3135 | struct event_format **eventptr; | |
3136 | struct event_format key; | |
3137 | struct event_format *pkey = &key; | |
3138 | ||
3139 | /* Check cache first */ | |
3140 | if (pevent->last_event && pevent->last_event->id == id) | |
3141 | return pevent->last_event; | |
3142 | ||
3143 | key.id = id; | |
3144 | ||
3145 | eventptr = bsearch(&pkey, pevent->events, pevent->nr_events, | |
3146 | sizeof(*pevent->events), events_id_cmp); | |
3147 | ||
3148 | if (eventptr) { | |
3149 | pevent->last_event = *eventptr; | |
3150 | return *eventptr; | |
3151 | } | |
3152 | ||
3153 | return NULL; | |
3154 | } | |
3155 | ||
3156 | /** | |
3157 | * pevent_find_event_by_name - find an event by given name | |
3158 | * @pevent: a handle to the pevent | |
3159 | * @sys: the system name to search for | |
3160 | * @name: the name of the event to search for | |
3161 | * | |
3162 | * This returns an event with a given @name and under the system | |
3163 | * @sys. If @sys is NULL the first event with @name is returned. | |
3164 | */ | |
3165 | struct event_format * | |
3166 | pevent_find_event_by_name(struct pevent *pevent, | |
3167 | const char *sys, const char *name) | |
3168 | { | |
3169 | struct event_format *event; | |
3170 | int i; | |
3171 | ||
3172 | if (pevent->last_event && | |
3173 | strcmp(pevent->last_event->name, name) == 0 && | |
3174 | (!sys || strcmp(pevent->last_event->system, sys) == 0)) | |
3175 | return pevent->last_event; | |
3176 | ||
3177 | for (i = 0; i < pevent->nr_events; i++) { | |
3178 | event = pevent->events[i]; | |
3179 | if (strcmp(event->name, name) == 0) { | |
3180 | if (!sys) | |
3181 | break; | |
3182 | if (strcmp(event->system, sys) == 0) | |
3183 | break; | |
3184 | } | |
3185 | } | |
3186 | if (i == pevent->nr_events) | |
3187 | event = NULL; | |
3188 | ||
3189 | pevent->last_event = event; | |
3190 | return event; | |
3191 | } | |
3192 | ||
3193 | static unsigned long long | |
3194 | eval_num_arg(void *data, int size, struct event_format *event, struct print_arg *arg) | |
3195 | { | |
3196 | struct pevent *pevent = event->pevent; | |
3197 | unsigned long long val = 0; | |
3198 | unsigned long long left, right; | |
3199 | struct print_arg *typearg = NULL; | |
3200 | struct print_arg *larg; | |
3201 | unsigned long offset; | |
3202 | unsigned int field_size; | |
3203 | ||
3204 | switch (arg->type) { | |
3205 | case PRINT_NULL: | |
3206 | /* ?? */ | |
3207 | return 0; | |
3208 | case PRINT_ATOM: | |
3209 | return strtoull(arg->atom.atom, NULL, 0); | |
3210 | case PRINT_FIELD: | |
3211 | if (!arg->field.field) { | |
3212 | arg->field.field = pevent_find_any_field(event, arg->field.name); | |
3213 | if (!arg->field.field) | |
a6d2a61a ACM |
3214 | goto out_warning_field; |
3215 | ||
f7d82350 SR |
3216 | } |
3217 | /* must be a number */ | |
3218 | val = pevent_read_number(pevent, data + arg->field.field->offset, | |
3219 | arg->field.field->size); | |
3220 | break; | |
3221 | case PRINT_FLAGS: | |
3222 | case PRINT_SYMBOL: | |
e080e6f1 | 3223 | case PRINT_HEX: |
f7d82350 SR |
3224 | break; |
3225 | case PRINT_TYPE: | |
3226 | val = eval_num_arg(data, size, event, arg->typecast.item); | |
3227 | return eval_type(val, arg, 0); | |
3228 | case PRINT_STRING: | |
3229 | case PRINT_BSTRING: | |
3230 | return 0; | |
3231 | case PRINT_FUNC: { | |
3232 | struct trace_seq s; | |
3233 | trace_seq_init(&s); | |
3234 | val = process_defined_func(&s, data, size, event, arg); | |
3235 | trace_seq_destroy(&s); | |
3236 | return val; | |
3237 | } | |
3238 | case PRINT_OP: | |
3239 | if (strcmp(arg->op.op, "[") == 0) { | |
3240 | /* | |
3241 | * Arrays are special, since we don't want | |
3242 | * to read the arg as is. | |
3243 | */ | |
3244 | right = eval_num_arg(data, size, event, arg->op.right); | |
3245 | ||
3246 | /* handle typecasts */ | |
3247 | larg = arg->op.left; | |
3248 | while (larg->type == PRINT_TYPE) { | |
3249 | if (!typearg) | |
3250 | typearg = larg; | |
3251 | larg = larg->typecast.item; | |
3252 | } | |
3253 | ||
3254 | /* Default to long size */ | |
3255 | field_size = pevent->long_size; | |
3256 | ||
3257 | switch (larg->type) { | |
3258 | case PRINT_DYNAMIC_ARRAY: | |
3259 | offset = pevent_read_number(pevent, | |
3260 | data + larg->dynarray.field->offset, | |
3261 | larg->dynarray.field->size); | |
3262 | if (larg->dynarray.field->elementsize) | |
3263 | field_size = larg->dynarray.field->elementsize; | |
3264 | /* | |
3265 | * The actual length of the dynamic array is stored | |
3266 | * in the top half of the field, and the offset | |
3267 | * is in the bottom half of the 32 bit field. | |
3268 | */ | |
3269 | offset &= 0xffff; | |
3270 | offset += right; | |
3271 | break; | |
3272 | case PRINT_FIELD: | |
3273 | if (!larg->field.field) { | |
3274 | larg->field.field = | |
3275 | pevent_find_any_field(event, larg->field.name); | |
a6d2a61a ACM |
3276 | if (!larg->field.field) { |
3277 | arg = larg; | |
3278 | goto out_warning_field; | |
3279 | } | |
f7d82350 SR |
3280 | } |
3281 | field_size = larg->field.field->elementsize; | |
3282 | offset = larg->field.field->offset + | |
3283 | right * larg->field.field->elementsize; | |
3284 | break; | |
3285 | default: | |
3286 | goto default_op; /* oops, all bets off */ | |
3287 | } | |
3288 | val = pevent_read_number(pevent, | |
3289 | data + offset, field_size); | |
3290 | if (typearg) | |
3291 | val = eval_type(val, typearg, 1); | |
3292 | break; | |
3293 | } else if (strcmp(arg->op.op, "?") == 0) { | |
3294 | left = eval_num_arg(data, size, event, arg->op.left); | |
3295 | arg = arg->op.right; | |
3296 | if (left) | |
3297 | val = eval_num_arg(data, size, event, arg->op.left); | |
3298 | else | |
3299 | val = eval_num_arg(data, size, event, arg->op.right); | |
3300 | break; | |
3301 | } | |
3302 | default_op: | |
3303 | left = eval_num_arg(data, size, event, arg->op.left); | |
3304 | right = eval_num_arg(data, size, event, arg->op.right); | |
3305 | switch (arg->op.op[0]) { | |
3306 | case '!': | |
3307 | switch (arg->op.op[1]) { | |
3308 | case 0: | |
3309 | val = !right; | |
3310 | break; | |
3311 | case '=': | |
3312 | val = left != right; | |
3313 | break; | |
3314 | default: | |
a6d2a61a | 3315 | goto out_warning_op; |
f7d82350 SR |
3316 | } |
3317 | break; | |
3318 | case '~': | |
3319 | val = ~right; | |
3320 | break; | |
3321 | case '|': | |
3322 | if (arg->op.op[1]) | |
3323 | val = left || right; | |
3324 | else | |
3325 | val = left | right; | |
3326 | break; | |
3327 | case '&': | |
3328 | if (arg->op.op[1]) | |
3329 | val = left && right; | |
3330 | else | |
3331 | val = left & right; | |
3332 | break; | |
3333 | case '<': | |
3334 | switch (arg->op.op[1]) { | |
3335 | case 0: | |
3336 | val = left < right; | |
3337 | break; | |
3338 | case '<': | |
3339 | val = left << right; | |
3340 | break; | |
3341 | case '=': | |
3342 | val = left <= right; | |
3343 | break; | |
3344 | default: | |
a6d2a61a | 3345 | goto out_warning_op; |
f7d82350 SR |
3346 | } |
3347 | break; | |
3348 | case '>': | |
3349 | switch (arg->op.op[1]) { | |
3350 | case 0: | |
3351 | val = left > right; | |
3352 | break; | |
3353 | case '>': | |
3354 | val = left >> right; | |
3355 | break; | |
3356 | case '=': | |
3357 | val = left >= right; | |
3358 | break; | |
3359 | default: | |
a6d2a61a | 3360 | goto out_warning_op; |
f7d82350 SR |
3361 | } |
3362 | break; | |
3363 | case '=': | |
3364 | if (arg->op.op[1] != '=') | |
a6d2a61a ACM |
3365 | goto out_warning_op; |
3366 | ||
f7d82350 SR |
3367 | val = left == right; |
3368 | break; | |
3369 | case '-': | |
3370 | val = left - right; | |
3371 | break; | |
3372 | case '+': | |
3373 | val = left + right; | |
3374 | break; | |
2e7a5fc8 SR |
3375 | case '/': |
3376 | val = left / right; | |
3377 | break; | |
3378 | case '*': | |
3379 | val = left * right; | |
3380 | break; | |
f7d82350 | 3381 | default: |
a6d2a61a | 3382 | goto out_warning_op; |
f7d82350 SR |
3383 | } |
3384 | break; | |
3385 | default: /* not sure what to do there */ | |
3386 | return 0; | |
3387 | } | |
3388 | return val; | |
a6d2a61a ACM |
3389 | |
3390 | out_warning_op: | |
3391 | do_warning("%s: unknown op '%s'", __func__, arg->op.op); | |
3392 | return 0; | |
3393 | ||
3394 | out_warning_field: | |
3395 | do_warning("%s: field %s not found", __func__, arg->field.name); | |
3396 | return 0; | |
f7d82350 SR |
3397 | } |
3398 | ||
3399 | struct flag { | |
3400 | const char *name; | |
3401 | unsigned long long value; | |
3402 | }; | |
3403 | ||
3404 | static const struct flag flags[] = { | |
3405 | { "HI_SOFTIRQ", 0 }, | |
3406 | { "TIMER_SOFTIRQ", 1 }, | |
3407 | { "NET_TX_SOFTIRQ", 2 }, | |
3408 | { "NET_RX_SOFTIRQ", 3 }, | |
3409 | { "BLOCK_SOFTIRQ", 4 }, | |
3410 | { "BLOCK_IOPOLL_SOFTIRQ", 5 }, | |
3411 | { "TASKLET_SOFTIRQ", 6 }, | |
3412 | { "SCHED_SOFTIRQ", 7 }, | |
3413 | { "HRTIMER_SOFTIRQ", 8 }, | |
3414 | { "RCU_SOFTIRQ", 9 }, | |
3415 | ||
3416 | { "HRTIMER_NORESTART", 0 }, | |
3417 | { "HRTIMER_RESTART", 1 }, | |
3418 | }; | |
3419 | ||
3420 | static unsigned long long eval_flag(const char *flag) | |
3421 | { | |
3422 | int i; | |
3423 | ||
3424 | /* | |
3425 | * Some flags in the format files do not get converted. | |
3426 | * If the flag is not numeric, see if it is something that | |
3427 | * we already know about. | |
3428 | */ | |
3429 | if (isdigit(flag[0])) | |
3430 | return strtoull(flag, NULL, 0); | |
3431 | ||
3432 | for (i = 0; i < (int)(sizeof(flags)/sizeof(flags[0])); i++) | |
3433 | if (strcmp(flags[i].name, flag) == 0) | |
3434 | return flags[i].value; | |
3435 | ||
3436 | return 0; | |
3437 | } | |
3438 | ||
3439 | static void print_str_to_seq(struct trace_seq *s, const char *format, | |
3440 | int len_arg, const char *str) | |
3441 | { | |
3442 | if (len_arg >= 0) | |
3443 | trace_seq_printf(s, format, len_arg, str); | |
3444 | else | |
3445 | trace_seq_printf(s, format, str); | |
3446 | } | |
3447 | ||
3448 | static void print_str_arg(struct trace_seq *s, void *data, int size, | |
3449 | struct event_format *event, const char *format, | |
3450 | int len_arg, struct print_arg *arg) | |
3451 | { | |
3452 | struct pevent *pevent = event->pevent; | |
3453 | struct print_flag_sym *flag; | |
b7008071 | 3454 | struct format_field *field; |
f7d82350 SR |
3455 | unsigned long long val, fval; |
3456 | unsigned long addr; | |
3457 | char *str; | |
e080e6f1 | 3458 | unsigned char *hex; |
f7d82350 | 3459 | int print; |
e080e6f1 | 3460 | int i, len; |
f7d82350 SR |
3461 | |
3462 | switch (arg->type) { | |
3463 | case PRINT_NULL: | |
3464 | /* ?? */ | |
3465 | return; | |
3466 | case PRINT_ATOM: | |
3467 | print_str_to_seq(s, format, len_arg, arg->atom.atom); | |
3468 | return; | |
3469 | case PRINT_FIELD: | |
b7008071 NK |
3470 | field = arg->field.field; |
3471 | if (!field) { | |
3472 | field = pevent_find_any_field(event, arg->field.name); | |
a6d2a61a ACM |
3473 | if (!field) { |
3474 | str = arg->field.name; | |
3475 | goto out_warning_field; | |
3476 | } | |
b7008071 | 3477 | arg->field.field = field; |
f7d82350 SR |
3478 | } |
3479 | /* Zero sized fields, mean the rest of the data */ | |
b7008071 | 3480 | len = field->size ? : size - field->offset; |
f7d82350 SR |
3481 | |
3482 | /* | |
3483 | * Some events pass in pointers. If this is not an array | |
3484 | * and the size is the same as long_size, assume that it | |
3485 | * is a pointer. | |
3486 | */ | |
b7008071 NK |
3487 | if (!(field->flags & FIELD_IS_ARRAY) && |
3488 | field->size == pevent->long_size) { | |
3489 | addr = *(unsigned long *)(data + field->offset); | |
f7d82350 SR |
3490 | trace_seq_printf(s, "%lx", addr); |
3491 | break; | |
3492 | } | |
a6d2a61a ACM |
3493 | str = malloc(len + 1); |
3494 | if (!str) { | |
3495 | do_warning("%s: not enough memory!", __func__); | |
3496 | return; | |
3497 | } | |
b7008071 | 3498 | memcpy(str, data + field->offset, len); |
f7d82350 SR |
3499 | str[len] = 0; |
3500 | print_str_to_seq(s, format, len_arg, str); | |
3501 | free(str); | |
3502 | break; | |
3503 | case PRINT_FLAGS: | |
3504 | val = eval_num_arg(data, size, event, arg->flags.field); | |
3505 | print = 0; | |
3506 | for (flag = arg->flags.flags; flag; flag = flag->next) { | |
3507 | fval = eval_flag(flag->value); | |
3508 | if (!val && !fval) { | |
3509 | print_str_to_seq(s, format, len_arg, flag->str); | |
3510 | break; | |
3511 | } | |
3512 | if (fval && (val & fval) == fval) { | |
3513 | if (print && arg->flags.delim) | |
3514 | trace_seq_puts(s, arg->flags.delim); | |
3515 | print_str_to_seq(s, format, len_arg, flag->str); | |
3516 | print = 1; | |
3517 | val &= ~fval; | |
3518 | } | |
3519 | } | |
3520 | break; | |
3521 | case PRINT_SYMBOL: | |
3522 | val = eval_num_arg(data, size, event, arg->symbol.field); | |
3523 | for (flag = arg->symbol.symbols; flag; flag = flag->next) { | |
3524 | fval = eval_flag(flag->value); | |
3525 | if (val == fval) { | |
3526 | print_str_to_seq(s, format, len_arg, flag->str); | |
3527 | break; | |
3528 | } | |
3529 | } | |
3530 | break; | |
e080e6f1 NK |
3531 | case PRINT_HEX: |
3532 | field = arg->hex.field->field.field; | |
3533 | if (!field) { | |
3534 | str = arg->hex.field->field.name; | |
3535 | field = pevent_find_any_field(event, str); | |
3536 | if (!field) | |
a6d2a61a | 3537 | goto out_warning_field; |
e080e6f1 NK |
3538 | arg->hex.field->field.field = field; |
3539 | } | |
3540 | hex = data + field->offset; | |
3541 | len = eval_num_arg(data, size, event, arg->hex.size); | |
3542 | for (i = 0; i < len; i++) { | |
3543 | if (i) | |
3544 | trace_seq_putc(s, ' '); | |
3545 | trace_seq_printf(s, "%02x", hex[i]); | |
3546 | } | |
3547 | break; | |
f7d82350 SR |
3548 | |
3549 | case PRINT_TYPE: | |
3550 | break; | |
3551 | case PRINT_STRING: { | |
3552 | int str_offset; | |
3553 | ||
3554 | if (arg->string.offset == -1) { | |
3555 | struct format_field *f; | |
3556 | ||
3557 | f = pevent_find_any_field(event, arg->string.string); | |
3558 | arg->string.offset = f->offset; | |
3559 | } | |
3560 | str_offset = data2host4(pevent, data + arg->string.offset); | |
3561 | str_offset &= 0xffff; | |
3562 | print_str_to_seq(s, format, len_arg, ((char *)data) + str_offset); | |
3563 | break; | |
3564 | } | |
3565 | case PRINT_BSTRING: | |
c2e6dc2b | 3566 | print_str_to_seq(s, format, len_arg, arg->string.string); |
f7d82350 SR |
3567 | break; |
3568 | case PRINT_OP: | |
3569 | /* | |
3570 | * The only op for string should be ? : | |
3571 | */ | |
3572 | if (arg->op.op[0] != '?') | |
3573 | return; | |
3574 | val = eval_num_arg(data, size, event, arg->op.left); | |
3575 | if (val) | |
3576 | print_str_arg(s, data, size, event, | |
3577 | format, len_arg, arg->op.right->op.left); | |
3578 | else | |
3579 | print_str_arg(s, data, size, event, | |
3580 | format, len_arg, arg->op.right->op.right); | |
3581 | break; | |
3582 | case PRINT_FUNC: | |
3583 | process_defined_func(s, data, size, event, arg); | |
3584 | break; | |
3585 | default: | |
3586 | /* well... */ | |
3587 | break; | |
3588 | } | |
a6d2a61a ACM |
3589 | |
3590 | return; | |
3591 | ||
3592 | out_warning_field: | |
3593 | do_warning("%s: field %s not found", __func__, arg->field.name); | |
f7d82350 SR |
3594 | } |
3595 | ||
3596 | static unsigned long long | |
3597 | process_defined_func(struct trace_seq *s, void *data, int size, | |
3598 | struct event_format *event, struct print_arg *arg) | |
3599 | { | |
3600 | struct pevent_function_handler *func_handle = arg->func.func; | |
3601 | struct pevent_func_params *param; | |
3602 | unsigned long long *args; | |
3603 | unsigned long long ret; | |
3604 | struct print_arg *farg; | |
3605 | struct trace_seq str; | |
3606 | struct save_str { | |
3607 | struct save_str *next; | |
3608 | char *str; | |
3609 | } *strings = NULL, *string; | |
3610 | int i; | |
3611 | ||
3612 | if (!func_handle->nr_args) { | |
3613 | ret = (*func_handle->func)(s, NULL); | |
3614 | goto out; | |
3615 | } | |
3616 | ||
3617 | farg = arg->func.args; | |
3618 | param = func_handle->params; | |
3619 | ||
a6d2a61a ACM |
3620 | ret = ULLONG_MAX; |
3621 | args = malloc(sizeof(*args) * func_handle->nr_args); | |
3622 | if (!args) | |
3623 | goto out; | |
3624 | ||
f7d82350 SR |
3625 | for (i = 0; i < func_handle->nr_args; i++) { |
3626 | switch (param->type) { | |
3627 | case PEVENT_FUNC_ARG_INT: | |
3628 | case PEVENT_FUNC_ARG_LONG: | |
3629 | case PEVENT_FUNC_ARG_PTR: | |
3630 | args[i] = eval_num_arg(data, size, event, farg); | |
3631 | break; | |
3632 | case PEVENT_FUNC_ARG_STRING: | |
3633 | trace_seq_init(&str); | |
3634 | print_str_arg(&str, data, size, event, "%s", -1, farg); | |
3635 | trace_seq_terminate(&str); | |
a6d2a61a ACM |
3636 | string = malloc(sizeof(*string)); |
3637 | if (!string) { | |
3638 | do_warning("%s(%d): malloc str", __func__, __LINE__); | |
3639 | goto out_free; | |
3640 | } | |
f7d82350 SR |
3641 | string->next = strings; |
3642 | string->str = strdup(str.buffer); | |
a6d2a61a ACM |
3643 | if (!string->str) { |
3644 | free(string); | |
3645 | do_warning("%s(%d): malloc str", __func__, __LINE__); | |
3646 | goto out_free; | |
3647 | } | |
0cf26013 | 3648 | args[i] = (uintptr_t)string->str; |
f7d82350 SR |
3649 | strings = string; |
3650 | trace_seq_destroy(&str); | |
3651 | break; | |
3652 | default: | |
3653 | /* | |
3654 | * Something went totally wrong, this is not | |
3655 | * an input error, something in this code broke. | |
3656 | */ | |
a6d2a61a ACM |
3657 | do_warning("Unexpected end of arguments\n"); |
3658 | goto out_free; | |
f7d82350 SR |
3659 | } |
3660 | farg = farg->next; | |
21c69e72 | 3661 | param = param->next; |
f7d82350 SR |
3662 | } |
3663 | ||
3664 | ret = (*func_handle->func)(s, args); | |
a6d2a61a | 3665 | out_free: |
f7d82350 SR |
3666 | free(args); |
3667 | while (strings) { | |
3668 | string = strings; | |
3669 | strings = string->next; | |
3670 | free(string->str); | |
3671 | free(string); | |
3672 | } | |
3673 | ||
3674 | out: | |
3675 | /* TBD : handle return type here */ | |
3676 | return ret; | |
3677 | } | |
3678 | ||
0dbca1e3 ACM |
3679 | static void free_args(struct print_arg *args) |
3680 | { | |
3681 | struct print_arg *next; | |
3682 | ||
3683 | while (args) { | |
3684 | next = args->next; | |
3685 | ||
3686 | free_arg(args); | |
3687 | args = next; | |
3688 | } | |
3689 | } | |
3690 | ||
f7d82350 SR |
3691 | static struct print_arg *make_bprint_args(char *fmt, void *data, int size, struct event_format *event) |
3692 | { | |
3693 | struct pevent *pevent = event->pevent; | |
3694 | struct format_field *field, *ip_field; | |
3695 | struct print_arg *args, *arg, **next; | |
3696 | unsigned long long ip, val; | |
3697 | char *ptr; | |
3698 | void *bptr; | |
c2e6dc2b | 3699 | int vsize; |
f7d82350 SR |
3700 | |
3701 | field = pevent->bprint_buf_field; | |
3702 | ip_field = pevent->bprint_ip_field; | |
3703 | ||
3704 | if (!field) { | |
3705 | field = pevent_find_field(event, "buf"); | |
a6d2a61a ACM |
3706 | if (!field) { |
3707 | do_warning("can't find buffer field for binary printk"); | |
3708 | return NULL; | |
3709 | } | |
f7d82350 | 3710 | ip_field = pevent_find_field(event, "ip"); |
a6d2a61a ACM |
3711 | if (!ip_field) { |
3712 | do_warning("can't find ip field for binary printk"); | |
3713 | return NULL; | |
3714 | } | |
f7d82350 SR |
3715 | pevent->bprint_buf_field = field; |
3716 | pevent->bprint_ip_field = ip_field; | |
3717 | } | |
3718 | ||
3719 | ip = pevent_read_number(pevent, data + ip_field->offset, ip_field->size); | |
3720 | ||
3721 | /* | |
3722 | * The first arg is the IP pointer. | |
3723 | */ | |
3724 | args = alloc_arg(); | |
b1ac754b NK |
3725 | if (!args) { |
3726 | do_warning("%s(%d): not enough memory!", __func__, __LINE__); | |
3727 | return NULL; | |
3728 | } | |
f7d82350 SR |
3729 | arg = args; |
3730 | arg->next = NULL; | |
3731 | next = &arg->next; | |
3732 | ||
3733 | arg->type = PRINT_ATOM; | |
0dbca1e3 ACM |
3734 | |
3735 | if (asprintf(&arg->atom.atom, "%lld", ip) < 0) | |
3736 | goto out_free; | |
f7d82350 SR |
3737 | |
3738 | /* skip the first "%pf : " */ | |
3739 | for (ptr = fmt + 6, bptr = data + field->offset; | |
3740 | bptr < data + size && *ptr; ptr++) { | |
3741 | int ls = 0; | |
3742 | ||
3743 | if (*ptr == '%') { | |
3744 | process_again: | |
3745 | ptr++; | |
3746 | switch (*ptr) { | |
3747 | case '%': | |
3748 | break; | |
3749 | case 'l': | |
3750 | ls++; | |
3751 | goto process_again; | |
3752 | case 'L': | |
3753 | ls = 2; | |
3754 | goto process_again; | |
3755 | case '0' ... '9': | |
3756 | goto process_again; | |
c2e6dc2b SR |
3757 | case '.': |
3758 | goto process_again; | |
f7d82350 SR |
3759 | case 'p': |
3760 | ls = 1; | |
3761 | /* fall through */ | |
3762 | case 'd': | |
3763 | case 'u': | |
3764 | case 'x': | |
3765 | case 'i': | |
f7d82350 SR |
3766 | switch (ls) { |
3767 | case 0: | |
c2e6dc2b | 3768 | vsize = 4; |
f7d82350 SR |
3769 | break; |
3770 | case 1: | |
c2e6dc2b | 3771 | vsize = pevent->long_size; |
f7d82350 SR |
3772 | break; |
3773 | case 2: | |
c2e6dc2b | 3774 | vsize = 8; |
c9bbabe3 | 3775 | break; |
f7d82350 | 3776 | default: |
c2e6dc2b | 3777 | vsize = ls; /* ? */ |
f7d82350 SR |
3778 | break; |
3779 | } | |
c2e6dc2b SR |
3780 | /* fall through */ |
3781 | case '*': | |
3782 | if (*ptr == '*') | |
3783 | vsize = 4; | |
3784 | ||
3785 | /* the pointers are always 4 bytes aligned */ | |
3786 | bptr = (void *)(((unsigned long)bptr + 3) & | |
3787 | ~3); | |
3788 | val = pevent_read_number(pevent, bptr, vsize); | |
3789 | bptr += vsize; | |
f7d82350 | 3790 | arg = alloc_arg(); |
b1ac754b NK |
3791 | if (!arg) { |
3792 | do_warning("%s(%d): not enough memory!", | |
3793 | __func__, __LINE__); | |
3794 | goto out_free; | |
3795 | } | |
f7d82350 SR |
3796 | arg->next = NULL; |
3797 | arg->type = PRINT_ATOM; | |
0dbca1e3 ACM |
3798 | if (asprintf(&arg->atom.atom, "%lld", val) < 0) { |
3799 | free(arg); | |
3800 | goto out_free; | |
3801 | } | |
f7d82350 SR |
3802 | *next = arg; |
3803 | next = &arg->next; | |
c2e6dc2b SR |
3804 | /* |
3805 | * The '*' case means that an arg is used as the length. | |
3806 | * We need to continue to figure out for what. | |
3807 | */ | |
3808 | if (*ptr == '*') | |
3809 | goto process_again; | |
3810 | ||
f7d82350 SR |
3811 | break; |
3812 | case 's': | |
3813 | arg = alloc_arg(); | |
b1ac754b NK |
3814 | if (!arg) { |
3815 | do_warning("%s(%d): not enough memory!", | |
3816 | __func__, __LINE__); | |
3817 | goto out_free; | |
3818 | } | |
f7d82350 SR |
3819 | arg->next = NULL; |
3820 | arg->type = PRINT_BSTRING; | |
3821 | arg->string.string = strdup(bptr); | |
ca63858e | 3822 | if (!arg->string.string) |
a6d2a61a | 3823 | goto out_free; |
f7d82350 SR |
3824 | bptr += strlen(bptr) + 1; |
3825 | *next = arg; | |
3826 | next = &arg->next; | |
3827 | default: | |
3828 | break; | |
3829 | } | |
3830 | } | |
3831 | } | |
3832 | ||
3833 | return args; | |
f7d82350 | 3834 | |
0dbca1e3 ACM |
3835 | out_free: |
3836 | free_args(args); | |
3837 | return NULL; | |
f7d82350 SR |
3838 | } |
3839 | ||
3840 | static char * | |
1d037ca1 IT |
3841 | get_bprint_format(void *data, int size __maybe_unused, |
3842 | struct event_format *event) | |
f7d82350 SR |
3843 | { |
3844 | struct pevent *pevent = event->pevent; | |
3845 | unsigned long long addr; | |
3846 | struct format_field *field; | |
3847 | struct printk_map *printk; | |
3848 | char *format; | |
3849 | char *p; | |
3850 | ||
3851 | field = pevent->bprint_fmt_field; | |
3852 | ||
3853 | if (!field) { | |
3854 | field = pevent_find_field(event, "fmt"); | |
a6d2a61a ACM |
3855 | if (!field) { |
3856 | do_warning("can't find format field for binary printk"); | |
3857 | return NULL; | |
3858 | } | |
f7d82350 SR |
3859 | pevent->bprint_fmt_field = field; |
3860 | } | |
3861 | ||
3862 | addr = pevent_read_number(pevent, data + field->offset, field->size); | |
3863 | ||
3864 | printk = find_printk(pevent, addr); | |
3865 | if (!printk) { | |
0dbca1e3 ACM |
3866 | if (asprintf(&format, "%%pf : (NO FORMAT FOUND at %llx)\n", addr) < 0) |
3867 | return NULL; | |
f7d82350 SR |
3868 | return format; |
3869 | } | |
3870 | ||
3871 | p = printk->printk; | |
3872 | /* Remove any quotes. */ | |
3873 | if (*p == '"') | |
3874 | p++; | |
0dbca1e3 ACM |
3875 | if (asprintf(&format, "%s : %s", "%pf", p) < 0) |
3876 | return NULL; | |
f7d82350 SR |
3877 | /* remove ending quotes and new line since we will add one too */ |
3878 | p = format + strlen(format) - 1; | |
3879 | if (*p == '"') | |
3880 | *p = 0; | |
3881 | ||
3882 | p -= 2; | |
3883 | if (strcmp(p, "\\n") == 0) | |
3884 | *p = 0; | |
3885 | ||
3886 | return format; | |
3887 | } | |
3888 | ||
3889 | static void print_mac_arg(struct trace_seq *s, int mac, void *data, int size, | |
3890 | struct event_format *event, struct print_arg *arg) | |
3891 | { | |
3892 | unsigned char *buf; | |
27f94d52 | 3893 | const char *fmt = "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x"; |
f7d82350 SR |
3894 | |
3895 | if (arg->type == PRINT_FUNC) { | |
3896 | process_defined_func(s, data, size, event, arg); | |
3897 | return; | |
3898 | } | |
3899 | ||
3900 | if (arg->type != PRINT_FIELD) { | |
3901 | trace_seq_printf(s, "ARG TYPE NOT FIELD BUT %d", | |
3902 | arg->type); | |
3903 | return; | |
3904 | } | |
3905 | ||
3906 | if (mac == 'm') | |
3907 | fmt = "%.2x%.2x%.2x%.2x%.2x%.2x"; | |
3908 | if (!arg->field.field) { | |
3909 | arg->field.field = | |
3910 | pevent_find_any_field(event, arg->field.name); | |
a6d2a61a ACM |
3911 | if (!arg->field.field) { |
3912 | do_warning("%s: field %s not found", | |
3913 | __func__, arg->field.name); | |
3914 | return; | |
3915 | } | |
f7d82350 SR |
3916 | } |
3917 | if (arg->field.field->size != 6) { | |
3918 | trace_seq_printf(s, "INVALIDMAC"); | |
3919 | return; | |
3920 | } | |
3921 | buf = data + arg->field.field->offset; | |
3922 | trace_seq_printf(s, fmt, buf[0], buf[1], buf[2], buf[3], buf[4], buf[5]); | |
3923 | } | |
3924 | ||
600da3cf NK |
3925 | static int is_printable_array(char *p, unsigned int len) |
3926 | { | |
3927 | unsigned int i; | |
3928 | ||
3929 | for (i = 0; i < len && p[i]; i++) | |
3930 | if (!isprint(p[i])) | |
3931 | return 0; | |
3932 | return 1; | |
3933 | } | |
3934 | ||
ca383a4d ACM |
3935 | static void print_event_fields(struct trace_seq *s, void *data, |
3936 | int size __maybe_unused, | |
f7d82350 SR |
3937 | struct event_format *event) |
3938 | { | |
3939 | struct format_field *field; | |
3940 | unsigned long long val; | |
3941 | unsigned int offset, len, i; | |
3942 | ||
3943 | field = event->format.fields; | |
3944 | while (field) { | |
3945 | trace_seq_printf(s, " %s=", field->name); | |
3946 | if (field->flags & FIELD_IS_ARRAY) { | |
3947 | offset = field->offset; | |
3948 | len = field->size; | |
3949 | if (field->flags & FIELD_IS_DYNAMIC) { | |
3950 | val = pevent_read_number(event->pevent, data + offset, len); | |
3951 | offset = val; | |
3952 | len = offset >> 16; | |
3953 | offset &= 0xffff; | |
3954 | } | |
600da3cf NK |
3955 | if (field->flags & FIELD_IS_STRING && |
3956 | is_printable_array(data + offset, len)) { | |
f7d82350 SR |
3957 | trace_seq_printf(s, "%s", (char *)data + offset); |
3958 | } else { | |
3959 | trace_seq_puts(s, "ARRAY["); | |
3960 | for (i = 0; i < len; i++) { | |
3961 | if (i) | |
3962 | trace_seq_puts(s, ", "); | |
3963 | trace_seq_printf(s, "%02x", | |
3964 | *((unsigned char *)data + offset + i)); | |
3965 | } | |
3966 | trace_seq_putc(s, ']'); | |
600da3cf | 3967 | field->flags &= ~FIELD_IS_STRING; |
f7d82350 SR |
3968 | } |
3969 | } else { | |
3970 | val = pevent_read_number(event->pevent, data + field->offset, | |
3971 | field->size); | |
3972 | if (field->flags & FIELD_IS_POINTER) { | |
3973 | trace_seq_printf(s, "0x%llx", val); | |
3974 | } else if (field->flags & FIELD_IS_SIGNED) { | |
3975 | switch (field->size) { | |
3976 | case 4: | |
3977 | /* | |
3978 | * If field is long then print it in hex. | |
3979 | * A long usually stores pointers. | |
3980 | */ | |
3981 | if (field->flags & FIELD_IS_LONG) | |
3982 | trace_seq_printf(s, "0x%x", (int)val); | |
3983 | else | |
3984 | trace_seq_printf(s, "%d", (int)val); | |
3985 | break; | |
3986 | case 2: | |
3987 | trace_seq_printf(s, "%2d", (short)val); | |
3988 | break; | |
3989 | case 1: | |
3990 | trace_seq_printf(s, "%1d", (char)val); | |
3991 | break; | |
3992 | default: | |
3993 | trace_seq_printf(s, "%lld", val); | |
3994 | } | |
3995 | } else { | |
3996 | if (field->flags & FIELD_IS_LONG) | |
3997 | trace_seq_printf(s, "0x%llx", val); | |
3998 | else | |
3999 | trace_seq_printf(s, "%llu", val); | |
4000 | } | |
4001 | } | |
4002 | field = field->next; | |
4003 | } | |
4004 | } | |
4005 | ||
4006 | static void pretty_print(struct trace_seq *s, void *data, int size, struct event_format *event) | |
4007 | { | |
4008 | struct pevent *pevent = event->pevent; | |
4009 | struct print_fmt *print_fmt = &event->print_fmt; | |
4010 | struct print_arg *arg = print_fmt->args; | |
4011 | struct print_arg *args = NULL; | |
4012 | const char *ptr = print_fmt->format; | |
4013 | unsigned long long val; | |
4014 | struct func_map *func; | |
4015 | const char *saveptr; | |
4016 | char *bprint_fmt = NULL; | |
4017 | char format[32]; | |
4018 | int show_func; | |
4019 | int len_as_arg; | |
4020 | int len_arg; | |
4021 | int len; | |
4022 | int ls; | |
4023 | ||
4024 | if (event->flags & EVENT_FL_FAILED) { | |
4025 | trace_seq_printf(s, "[FAILED TO PARSE]"); | |
4026 | print_event_fields(s, data, size, event); | |
4027 | return; | |
4028 | } | |
4029 | ||
4030 | if (event->flags & EVENT_FL_ISBPRINT) { | |
4031 | bprint_fmt = get_bprint_format(data, size, event); | |
4032 | args = make_bprint_args(bprint_fmt, data, size, event); | |
4033 | arg = args; | |
4034 | ptr = bprint_fmt; | |
4035 | } | |
4036 | ||
4037 | for (; *ptr; ptr++) { | |
4038 | ls = 0; | |
4039 | if (*ptr == '\\') { | |
4040 | ptr++; | |
4041 | switch (*ptr) { | |
4042 | case 'n': | |
4043 | trace_seq_putc(s, '\n'); | |
4044 | break; | |
4045 | case 't': | |
4046 | trace_seq_putc(s, '\t'); | |
4047 | break; | |
4048 | case 'r': | |
4049 | trace_seq_putc(s, '\r'); | |
4050 | break; | |
4051 | case '\\': | |
4052 | trace_seq_putc(s, '\\'); | |
4053 | break; | |
4054 | default: | |
4055 | trace_seq_putc(s, *ptr); | |
4056 | break; | |
4057 | } | |
4058 | ||
4059 | } else if (*ptr == '%') { | |
4060 | saveptr = ptr; | |
4061 | show_func = 0; | |
4062 | len_as_arg = 0; | |
4063 | cont_process: | |
4064 | ptr++; | |
4065 | switch (*ptr) { | |
4066 | case '%': | |
4067 | trace_seq_putc(s, '%'); | |
4068 | break; | |
4069 | case '#': | |
4070 | /* FIXME: need to handle properly */ | |
4071 | goto cont_process; | |
4072 | case 'h': | |
4073 | ls--; | |
4074 | goto cont_process; | |
4075 | case 'l': | |
4076 | ls++; | |
4077 | goto cont_process; | |
4078 | case 'L': | |
4079 | ls = 2; | |
4080 | goto cont_process; | |
4081 | case '*': | |
4082 | /* The argument is the length. */ | |
245c5a18 NK |
4083 | if (!arg) { |
4084 | do_warning("no argument match"); | |
4085 | event->flags |= EVENT_FL_FAILED; | |
4086 | goto out_failed; | |
4087 | } | |
f7d82350 SR |
4088 | len_arg = eval_num_arg(data, size, event, arg); |
4089 | len_as_arg = 1; | |
4090 | arg = arg->next; | |
4091 | goto cont_process; | |
4092 | case '.': | |
4093 | case 'z': | |
4094 | case 'Z': | |
4095 | case '0' ... '9': | |
4096 | goto cont_process; | |
4097 | case 'p': | |
4098 | if (pevent->long_size == 4) | |
4099 | ls = 1; | |
4100 | else | |
4101 | ls = 2; | |
4102 | ||
4103 | if (*(ptr+1) == 'F' || | |
4104 | *(ptr+1) == 'f') { | |
4105 | ptr++; | |
4106 | show_func = *ptr; | |
4107 | } else if (*(ptr+1) == 'M' || *(ptr+1) == 'm') { | |
4108 | print_mac_arg(s, *(ptr+1), data, size, event, arg); | |
4109 | ptr++; | |
aaf05c72 | 4110 | arg = arg->next; |
f7d82350 SR |
4111 | break; |
4112 | } | |
4113 | ||
4114 | /* fall through */ | |
4115 | case 'd': | |
4116 | case 'i': | |
4117 | case 'x': | |
4118 | case 'X': | |
4119 | case 'u': | |
245c5a18 NK |
4120 | if (!arg) { |
4121 | do_warning("no argument match"); | |
4122 | event->flags |= EVENT_FL_FAILED; | |
4123 | goto out_failed; | |
4124 | } | |
f7d82350 SR |
4125 | |
4126 | len = ((unsigned long)ptr + 1) - | |
4127 | (unsigned long)saveptr; | |
4128 | ||
4129 | /* should never happen */ | |
245c5a18 NK |
4130 | if (len > 31) { |
4131 | do_warning("bad format!"); | |
4132 | event->flags |= EVENT_FL_FAILED; | |
4133 | len = 31; | |
4134 | } | |
f7d82350 SR |
4135 | |
4136 | memcpy(format, saveptr, len); | |
4137 | format[len] = 0; | |
4138 | ||
4139 | val = eval_num_arg(data, size, event, arg); | |
4140 | arg = arg->next; | |
4141 | ||
4142 | if (show_func) { | |
4143 | func = find_func(pevent, val); | |
4144 | if (func) { | |
4145 | trace_seq_puts(s, func->func); | |
4146 | if (show_func == 'F') | |
4147 | trace_seq_printf(s, | |
4148 | "+0x%llx", | |
4149 | val - func->addr); | |
4150 | break; | |
4151 | } | |
4152 | } | |
c5b35b73 WM |
4153 | if (pevent->long_size == 8 && ls && |
4154 | sizeof(long) != 8) { | |
f7d82350 SR |
4155 | char *p; |
4156 | ||
4157 | ls = 2; | |
4158 | /* make %l into %ll */ | |
4159 | p = strchr(format, 'l'); | |
4160 | if (p) | |
c5b35b73 | 4161 | memmove(p+1, p, strlen(p)+1); |
f7d82350 SR |
4162 | else if (strcmp(format, "%p") == 0) |
4163 | strcpy(format, "0x%llx"); | |
4164 | } | |
4165 | switch (ls) { | |
4166 | case -2: | |
4167 | if (len_as_arg) | |
4168 | trace_seq_printf(s, format, len_arg, (char)val); | |
4169 | else | |
4170 | trace_seq_printf(s, format, (char)val); | |
4171 | break; | |
4172 | case -1: | |
4173 | if (len_as_arg) | |
4174 | trace_seq_printf(s, format, len_arg, (short)val); | |
4175 | else | |
4176 | trace_seq_printf(s, format, (short)val); | |
4177 | break; | |
4178 | case 0: | |
4179 | if (len_as_arg) | |
4180 | trace_seq_printf(s, format, len_arg, (int)val); | |
4181 | else | |
4182 | trace_seq_printf(s, format, (int)val); | |
4183 | break; | |
4184 | case 1: | |
4185 | if (len_as_arg) | |
4186 | trace_seq_printf(s, format, len_arg, (long)val); | |
4187 | else | |
4188 | trace_seq_printf(s, format, (long)val); | |
4189 | break; | |
4190 | case 2: | |
4191 | if (len_as_arg) | |
4192 | trace_seq_printf(s, format, len_arg, | |
4193 | (long long)val); | |
4194 | else | |
4195 | trace_seq_printf(s, format, (long long)val); | |
4196 | break; | |
4197 | default: | |
245c5a18 NK |
4198 | do_warning("bad count (%d)", ls); |
4199 | event->flags |= EVENT_FL_FAILED; | |
f7d82350 SR |
4200 | } |
4201 | break; | |
4202 | case 's': | |
245c5a18 NK |
4203 | if (!arg) { |
4204 | do_warning("no matching argument"); | |
4205 | event->flags |= EVENT_FL_FAILED; | |
4206 | goto out_failed; | |
4207 | } | |
f7d82350 SR |
4208 | |
4209 | len = ((unsigned long)ptr + 1) - | |
4210 | (unsigned long)saveptr; | |
4211 | ||
4212 | /* should never happen */ | |
245c5a18 NK |
4213 | if (len > 31) { |
4214 | do_warning("bad format!"); | |
4215 | event->flags |= EVENT_FL_FAILED; | |
4216 | len = 31; | |
4217 | } | |
f7d82350 SR |
4218 | |
4219 | memcpy(format, saveptr, len); | |
4220 | format[len] = 0; | |
4221 | if (!len_as_arg) | |
4222 | len_arg = -1; | |
4223 | print_str_arg(s, data, size, event, | |
4224 | format, len_arg, arg); | |
4225 | arg = arg->next; | |
4226 | break; | |
4227 | default: | |
4228 | trace_seq_printf(s, ">%c<", *ptr); | |
4229 | ||
4230 | } | |
4231 | } else | |
4232 | trace_seq_putc(s, *ptr); | |
4233 | } | |
4234 | ||
245c5a18 NK |
4235 | if (event->flags & EVENT_FL_FAILED) { |
4236 | out_failed: | |
4237 | trace_seq_printf(s, "[FAILED TO PARSE]"); | |
4238 | } | |
4239 | ||
f7d82350 SR |
4240 | if (args) { |
4241 | free_args(args); | |
4242 | free(bprint_fmt); | |
4243 | } | |
4244 | } | |
4245 | ||
4246 | /** | |
4247 | * pevent_data_lat_fmt - parse the data for the latency format | |
4248 | * @pevent: a handle to the pevent | |
4249 | * @s: the trace_seq to write to | |
16e6b8fd | 4250 | * @record: the record to read from |
f7d82350 SR |
4251 | * |
4252 | * This parses out the Latency format (interrupts disabled, | |
4253 | * need rescheduling, in hard/soft interrupt, preempt count | |
4254 | * and lock depth) and places it into the trace_seq. | |
4255 | */ | |
4256 | void pevent_data_lat_fmt(struct pevent *pevent, | |
1c698186 | 4257 | struct trace_seq *s, struct pevent_record *record) |
f7d82350 SR |
4258 | { |
4259 | static int check_lock_depth = 1; | |
0866a97e | 4260 | static int check_migrate_disable = 1; |
f7d82350 | 4261 | static int lock_depth_exists; |
0866a97e | 4262 | static int migrate_disable_exists; |
f7d82350 SR |
4263 | unsigned int lat_flags; |
4264 | unsigned int pc; | |
4265 | int lock_depth; | |
0866a97e | 4266 | int migrate_disable; |
f7d82350 SR |
4267 | int hardirq; |
4268 | int softirq; | |
4269 | void *data = record->data; | |
4270 | ||
4271 | lat_flags = parse_common_flags(pevent, data); | |
4272 | pc = parse_common_pc(pevent, data); | |
4273 | /* lock_depth may not always exist */ | |
f7d82350 SR |
4274 | if (lock_depth_exists) |
4275 | lock_depth = parse_common_lock_depth(pevent, data); | |
0866a97e SR |
4276 | else if (check_lock_depth) { |
4277 | lock_depth = parse_common_lock_depth(pevent, data); | |
4278 | if (lock_depth < 0) | |
4279 | check_lock_depth = 0; | |
4280 | else | |
4281 | lock_depth_exists = 1; | |
4282 | } | |
4283 | ||
4284 | /* migrate_disable may not always exist */ | |
4285 | if (migrate_disable_exists) | |
4286 | migrate_disable = parse_common_migrate_disable(pevent, data); | |
4287 | else if (check_migrate_disable) { | |
4288 | migrate_disable = parse_common_migrate_disable(pevent, data); | |
4289 | if (migrate_disable < 0) | |
4290 | check_migrate_disable = 0; | |
4291 | else | |
4292 | migrate_disable_exists = 1; | |
4293 | } | |
f7d82350 SR |
4294 | |
4295 | hardirq = lat_flags & TRACE_FLAG_HARDIRQ; | |
4296 | softirq = lat_flags & TRACE_FLAG_SOFTIRQ; | |
4297 | ||
4298 | trace_seq_printf(s, "%c%c%c", | |
4299 | (lat_flags & TRACE_FLAG_IRQS_OFF) ? 'd' : | |
4300 | (lat_flags & TRACE_FLAG_IRQS_NOSUPPORT) ? | |
4301 | 'X' : '.', | |
4302 | (lat_flags & TRACE_FLAG_NEED_RESCHED) ? | |
4303 | 'N' : '.', | |
4304 | (hardirq && softirq) ? 'H' : | |
4305 | hardirq ? 'h' : softirq ? 's' : '.'); | |
4306 | ||
4307 | if (pc) | |
4308 | trace_seq_printf(s, "%x", pc); | |
4309 | else | |
4310 | trace_seq_putc(s, '.'); | |
4311 | ||
0866a97e SR |
4312 | if (migrate_disable_exists) { |
4313 | if (migrate_disable < 0) | |
4314 | trace_seq_putc(s, '.'); | |
4315 | else | |
4316 | trace_seq_printf(s, "%d", migrate_disable); | |
4317 | } | |
4318 | ||
f7d82350 SR |
4319 | if (lock_depth_exists) { |
4320 | if (lock_depth < 0) | |
4321 | trace_seq_putc(s, '.'); | |
4322 | else | |
4323 | trace_seq_printf(s, "%d", lock_depth); | |
4324 | } | |
4325 | ||
4326 | trace_seq_terminate(s); | |
4327 | } | |
4328 | ||
4329 | /** | |
4330 | * pevent_data_type - parse out the given event type | |
4331 | * @pevent: a handle to the pevent | |
4332 | * @rec: the record to read from | |
4333 | * | |
4334 | * This returns the event id from the @rec. | |
4335 | */ | |
1c698186 | 4336 | int pevent_data_type(struct pevent *pevent, struct pevent_record *rec) |
f7d82350 SR |
4337 | { |
4338 | return trace_parse_common_type(pevent, rec->data); | |
4339 | } | |
4340 | ||
4341 | /** | |
4342 | * pevent_data_event_from_type - find the event by a given type | |
4343 | * @pevent: a handle to the pevent | |
4344 | * @type: the type of the event. | |
4345 | * | |
4346 | * This returns the event form a given @type; | |
4347 | */ | |
4348 | struct event_format *pevent_data_event_from_type(struct pevent *pevent, int type) | |
4349 | { | |
4350 | return pevent_find_event(pevent, type); | |
4351 | } | |
4352 | ||
4353 | /** | |
4354 | * pevent_data_pid - parse the PID from raw data | |
4355 | * @pevent: a handle to the pevent | |
4356 | * @rec: the record to parse | |
4357 | * | |
4358 | * This returns the PID from a raw data. | |
4359 | */ | |
1c698186 | 4360 | int pevent_data_pid(struct pevent *pevent, struct pevent_record *rec) |
f7d82350 SR |
4361 | { |
4362 | return parse_common_pid(pevent, rec->data); | |
4363 | } | |
4364 | ||
4365 | /** | |
4366 | * pevent_data_comm_from_pid - return the command line from PID | |
4367 | * @pevent: a handle to the pevent | |
4368 | * @pid: the PID of the task to search for | |
4369 | * | |
4370 | * This returns a pointer to the command line that has the given | |
4371 | * @pid. | |
4372 | */ | |
4373 | const char *pevent_data_comm_from_pid(struct pevent *pevent, int pid) | |
4374 | { | |
4375 | const char *comm; | |
4376 | ||
4377 | comm = find_cmdline(pevent, pid); | |
4378 | return comm; | |
4379 | } | |
4380 | ||
4381 | /** | |
4382 | * pevent_data_comm_from_pid - parse the data into the print format | |
4383 | * @s: the trace_seq to write to | |
4384 | * @event: the handle to the event | |
16e6b8fd | 4385 | * @record: the record to read from |
f7d82350 SR |
4386 | * |
4387 | * This parses the raw @data using the given @event information and | |
4388 | * writes the print format into the trace_seq. | |
4389 | */ | |
4390 | void pevent_event_info(struct trace_seq *s, struct event_format *event, | |
1c698186 | 4391 | struct pevent_record *record) |
f7d82350 SR |
4392 | { |
4393 | int print_pretty = 1; | |
4394 | ||
4395 | if (event->pevent->print_raw) | |
4396 | print_event_fields(s, record->data, record->size, event); | |
4397 | else { | |
4398 | ||
4399 | if (event->handler) | |
4400 | print_pretty = event->handler(s, record, event, | |
4401 | event->context); | |
4402 | ||
4403 | if (print_pretty) | |
4404 | pretty_print(s, record->data, record->size, event); | |
4405 | } | |
4406 | ||
4407 | trace_seq_terminate(s); | |
4408 | } | |
4409 | ||
4410 | void pevent_print_event(struct pevent *pevent, struct trace_seq *s, | |
1c698186 | 4411 | struct pevent_record *record) |
f7d82350 | 4412 | { |
27f94d52 | 4413 | static const char *spaces = " "; /* 20 spaces */ |
f7d82350 SR |
4414 | struct event_format *event; |
4415 | unsigned long secs; | |
4416 | unsigned long usecs; | |
4dc1024a | 4417 | unsigned long nsecs; |
f7d82350 SR |
4418 | const char *comm; |
4419 | void *data = record->data; | |
4420 | int type; | |
4421 | int pid; | |
4422 | int len; | |
4dc1024a | 4423 | int p; |
f7d82350 SR |
4424 | |
4425 | secs = record->ts / NSECS_PER_SEC; | |
4dc1024a | 4426 | nsecs = record->ts - secs * NSECS_PER_SEC; |
f7d82350 SR |
4427 | |
4428 | if (record->size < 0) { | |
4429 | do_warning("ug! negative record size %d", record->size); | |
4430 | return; | |
4431 | } | |
4432 | ||
4433 | type = trace_parse_common_type(pevent, data); | |
4434 | ||
4435 | event = pevent_find_event(pevent, type); | |
4436 | if (!event) { | |
4437 | do_warning("ug! no event found for type %d", type); | |
4438 | return; | |
4439 | } | |
4440 | ||
4441 | pid = parse_common_pid(pevent, data); | |
4442 | comm = find_cmdline(pevent, pid); | |
4443 | ||
4444 | if (pevent->latency_format) { | |
4445 | trace_seq_printf(s, "%8.8s-%-5d %3d", | |
4446 | comm, pid, record->cpu); | |
4447 | pevent_data_lat_fmt(pevent, s, record); | |
4448 | } else | |
4449 | trace_seq_printf(s, "%16s-%-5d [%03d]", comm, pid, record->cpu); | |
4450 | ||
4dc1024a SR |
4451 | if (pevent->flags & PEVENT_NSEC_OUTPUT) { |
4452 | usecs = nsecs; | |
4453 | p = 9; | |
4454 | } else { | |
4455 | usecs = (nsecs + 500) / NSECS_PER_USEC; | |
4456 | p = 6; | |
4457 | } | |
4458 | ||
4459 | trace_seq_printf(s, " %5lu.%0*lu: %s: ", secs, p, usecs, event->name); | |
f7d82350 SR |
4460 | |
4461 | /* Space out the event names evenly. */ | |
4462 | len = strlen(event->name); | |
4463 | if (len < 20) | |
4464 | trace_seq_printf(s, "%.*s", 20 - len, spaces); | |
4465 | ||
4466 | pevent_event_info(s, event, record); | |
4467 | } | |
4468 | ||
4469 | static int events_id_cmp(const void *a, const void *b) | |
4470 | { | |
4471 | struct event_format * const * ea = a; | |
4472 | struct event_format * const * eb = b; | |
4473 | ||
4474 | if ((*ea)->id < (*eb)->id) | |
4475 | return -1; | |
4476 | ||
4477 | if ((*ea)->id > (*eb)->id) | |
4478 | return 1; | |
4479 | ||
4480 | return 0; | |
4481 | } | |
4482 | ||
4483 | static int events_name_cmp(const void *a, const void *b) | |
4484 | { | |
4485 | struct event_format * const * ea = a; | |
4486 | struct event_format * const * eb = b; | |
4487 | int res; | |
4488 | ||
4489 | res = strcmp((*ea)->name, (*eb)->name); | |
4490 | if (res) | |
4491 | return res; | |
4492 | ||
4493 | res = strcmp((*ea)->system, (*eb)->system); | |
4494 | if (res) | |
4495 | return res; | |
4496 | ||
4497 | return events_id_cmp(a, b); | |
4498 | } | |
4499 | ||
4500 | static int events_system_cmp(const void *a, const void *b) | |
4501 | { | |
4502 | struct event_format * const * ea = a; | |
4503 | struct event_format * const * eb = b; | |
4504 | int res; | |
4505 | ||
4506 | res = strcmp((*ea)->system, (*eb)->system); | |
4507 | if (res) | |
4508 | return res; | |
4509 | ||
4510 | res = strcmp((*ea)->name, (*eb)->name); | |
4511 | if (res) | |
4512 | return res; | |
4513 | ||
4514 | return events_id_cmp(a, b); | |
4515 | } | |
4516 | ||
4517 | struct event_format **pevent_list_events(struct pevent *pevent, enum event_sort_type sort_type) | |
4518 | { | |
4519 | struct event_format **events; | |
4520 | int (*sort)(const void *a, const void *b); | |
4521 | ||
4522 | events = pevent->sort_events; | |
4523 | ||
4524 | if (events && pevent->last_type == sort_type) | |
4525 | return events; | |
4526 | ||
4527 | if (!events) { | |
4528 | events = malloc(sizeof(*events) * (pevent->nr_events + 1)); | |
4529 | if (!events) | |
4530 | return NULL; | |
4531 | ||
4532 | memcpy(events, pevent->events, sizeof(*events) * pevent->nr_events); | |
4533 | events[pevent->nr_events] = NULL; | |
4534 | ||
4535 | pevent->sort_events = events; | |
4536 | ||
4537 | /* the internal events are sorted by id */ | |
4538 | if (sort_type == EVENT_SORT_ID) { | |
4539 | pevent->last_type = sort_type; | |
4540 | return events; | |
4541 | } | |
4542 | } | |
4543 | ||
4544 | switch (sort_type) { | |
4545 | case EVENT_SORT_ID: | |
4546 | sort = events_id_cmp; | |
4547 | break; | |
4548 | case EVENT_SORT_NAME: | |
4549 | sort = events_name_cmp; | |
4550 | break; | |
4551 | case EVENT_SORT_SYSTEM: | |
4552 | sort = events_system_cmp; | |
4553 | break; | |
4554 | default: | |
4555 | return events; | |
4556 | } | |
4557 | ||
4558 | qsort(events, pevent->nr_events, sizeof(*events), sort); | |
4559 | pevent->last_type = sort_type; | |
4560 | ||
4561 | return events; | |
4562 | } | |
4563 | ||
4564 | static struct format_field ** | |
4565 | get_event_fields(const char *type, const char *name, | |
4566 | int count, struct format_field *list) | |
4567 | { | |
4568 | struct format_field **fields; | |
4569 | struct format_field *field; | |
4570 | int i = 0; | |
4571 | ||
a6d2a61a ACM |
4572 | fields = malloc(sizeof(*fields) * (count + 1)); |
4573 | if (!fields) | |
4574 | return NULL; | |
4575 | ||
f7d82350 SR |
4576 | for (field = list; field; field = field->next) { |
4577 | fields[i++] = field; | |
4578 | if (i == count + 1) { | |
4579 | do_warning("event %s has more %s fields than specified", | |
4580 | name, type); | |
4581 | i--; | |
4582 | break; | |
4583 | } | |
4584 | } | |
4585 | ||
4586 | if (i != count) | |
4587 | do_warning("event %s has less %s fields than specified", | |
4588 | name, type); | |
4589 | ||
4590 | fields[i] = NULL; | |
4591 | ||
4592 | return fields; | |
4593 | } | |
4594 | ||
4595 | /** | |
4596 | * pevent_event_common_fields - return a list of common fields for an event | |
4597 | * @event: the event to return the common fields of. | |
4598 | * | |
4599 | * Returns an allocated array of fields. The last item in the array is NULL. | |
4600 | * The array must be freed with free(). | |
4601 | */ | |
4602 | struct format_field **pevent_event_common_fields(struct event_format *event) | |
4603 | { | |
4604 | return get_event_fields("common", event->name, | |
4605 | event->format.nr_common, | |
4606 | event->format.common_fields); | |
4607 | } | |
4608 | ||
4609 | /** | |
4610 | * pevent_event_fields - return a list of event specific fields for an event | |
4611 | * @event: the event to return the fields of. | |
4612 | * | |
4613 | * Returns an allocated array of fields. The last item in the array is NULL. | |
4614 | * The array must be freed with free(). | |
4615 | */ | |
4616 | struct format_field **pevent_event_fields(struct event_format *event) | |
4617 | { | |
4618 | return get_event_fields("event", event->name, | |
4619 | event->format.nr_fields, | |
4620 | event->format.fields); | |
4621 | } | |
4622 | ||
4623 | static void print_fields(struct trace_seq *s, struct print_flag_sym *field) | |
4624 | { | |
4625 | trace_seq_printf(s, "{ %s, %s }", field->value, field->str); | |
4626 | if (field->next) { | |
4627 | trace_seq_puts(s, ", "); | |
4628 | print_fields(s, field->next); | |
4629 | } | |
4630 | } | |
4631 | ||
4632 | /* for debugging */ | |
4633 | static void print_args(struct print_arg *args) | |
4634 | { | |
4635 | int print_paren = 1; | |
4636 | struct trace_seq s; | |
4637 | ||
4638 | switch (args->type) { | |
4639 | case PRINT_NULL: | |
4640 | printf("null"); | |
4641 | break; | |
4642 | case PRINT_ATOM: | |
4643 | printf("%s", args->atom.atom); | |
4644 | break; | |
4645 | case PRINT_FIELD: | |
4646 | printf("REC->%s", args->field.name); | |
4647 | break; | |
4648 | case PRINT_FLAGS: | |
4649 | printf("__print_flags("); | |
4650 | print_args(args->flags.field); | |
4651 | printf(", %s, ", args->flags.delim); | |
4652 | trace_seq_init(&s); | |
4653 | print_fields(&s, args->flags.flags); | |
4654 | trace_seq_do_printf(&s); | |
4655 | trace_seq_destroy(&s); | |
4656 | printf(")"); | |
4657 | break; | |
4658 | case PRINT_SYMBOL: | |
4659 | printf("__print_symbolic("); | |
4660 | print_args(args->symbol.field); | |
4661 | printf(", "); | |
4662 | trace_seq_init(&s); | |
4663 | print_fields(&s, args->symbol.symbols); | |
4664 | trace_seq_do_printf(&s); | |
4665 | trace_seq_destroy(&s); | |
4666 | printf(")"); | |
4667 | break; | |
e080e6f1 NK |
4668 | case PRINT_HEX: |
4669 | printf("__print_hex("); | |
4670 | print_args(args->hex.field); | |
4671 | printf(", "); | |
4672 | print_args(args->hex.size); | |
4673 | printf(")"); | |
4674 | break; | |
f7d82350 SR |
4675 | case PRINT_STRING: |
4676 | case PRINT_BSTRING: | |
4677 | printf("__get_str(%s)", args->string.string); | |
4678 | break; | |
4679 | case PRINT_TYPE: | |
4680 | printf("(%s)", args->typecast.type); | |
4681 | print_args(args->typecast.item); | |
4682 | break; | |
4683 | case PRINT_OP: | |
4684 | if (strcmp(args->op.op, ":") == 0) | |
4685 | print_paren = 0; | |
4686 | if (print_paren) | |
4687 | printf("("); | |
4688 | print_args(args->op.left); | |
4689 | printf(" %s ", args->op.op); | |
4690 | print_args(args->op.right); | |
4691 | if (print_paren) | |
4692 | printf(")"); | |
4693 | break; | |
4694 | default: | |
4695 | /* we should warn... */ | |
4696 | return; | |
4697 | } | |
4698 | if (args->next) { | |
4699 | printf("\n"); | |
4700 | print_args(args->next); | |
4701 | } | |
4702 | } | |
4703 | ||
4704 | static void parse_header_field(const char *field, | |
4705 | int *offset, int *size, int mandatory) | |
4706 | { | |
4707 | unsigned long long save_input_buf_ptr; | |
4708 | unsigned long long save_input_buf_siz; | |
4709 | char *token; | |
4710 | int type; | |
4711 | ||
4712 | save_input_buf_ptr = input_buf_ptr; | |
4713 | save_input_buf_siz = input_buf_siz; | |
4714 | ||
4715 | if (read_expected(EVENT_ITEM, "field") < 0) | |
4716 | return; | |
4717 | if (read_expected(EVENT_OP, ":") < 0) | |
4718 | return; | |
4719 | ||
4720 | /* type */ | |
4721 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
4722 | goto fail; | |
4723 | free_token(token); | |
4724 | ||
4725 | /* | |
4726 | * If this is not a mandatory field, then test it first. | |
4727 | */ | |
4728 | if (mandatory) { | |
4729 | if (read_expected(EVENT_ITEM, field) < 0) | |
4730 | return; | |
4731 | } else { | |
4732 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
4733 | goto fail; | |
4734 | if (strcmp(token, field) != 0) | |
4735 | goto discard; | |
4736 | free_token(token); | |
4737 | } | |
4738 | ||
4739 | if (read_expected(EVENT_OP, ";") < 0) | |
4740 | return; | |
4741 | if (read_expected(EVENT_ITEM, "offset") < 0) | |
4742 | return; | |
4743 | if (read_expected(EVENT_OP, ":") < 0) | |
4744 | return; | |
4745 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
4746 | goto fail; | |
4747 | *offset = atoi(token); | |
4748 | free_token(token); | |
4749 | if (read_expected(EVENT_OP, ";") < 0) | |
4750 | return; | |
4751 | if (read_expected(EVENT_ITEM, "size") < 0) | |
4752 | return; | |
4753 | if (read_expected(EVENT_OP, ":") < 0) | |
4754 | return; | |
4755 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
4756 | goto fail; | |
4757 | *size = atoi(token); | |
4758 | free_token(token); | |
4759 | if (read_expected(EVENT_OP, ";") < 0) | |
4760 | return; | |
4761 | type = read_token(&token); | |
4762 | if (type != EVENT_NEWLINE) { | |
4763 | /* newer versions of the kernel have a "signed" type */ | |
4764 | if (type != EVENT_ITEM) | |
4765 | goto fail; | |
4766 | ||
4767 | if (strcmp(token, "signed") != 0) | |
4768 | goto fail; | |
4769 | ||
4770 | free_token(token); | |
4771 | ||
4772 | if (read_expected(EVENT_OP, ":") < 0) | |
4773 | return; | |
4774 | ||
4775 | if (read_expect_type(EVENT_ITEM, &token)) | |
4776 | goto fail; | |
4777 | ||
4778 | free_token(token); | |
4779 | if (read_expected(EVENT_OP, ";") < 0) | |
4780 | return; | |
4781 | ||
4782 | if (read_expect_type(EVENT_NEWLINE, &token)) | |
4783 | goto fail; | |
4784 | } | |
4785 | fail: | |
4786 | free_token(token); | |
4787 | return; | |
4788 | ||
4789 | discard: | |
4790 | input_buf_ptr = save_input_buf_ptr; | |
4791 | input_buf_siz = save_input_buf_siz; | |
4792 | *offset = 0; | |
4793 | *size = 0; | |
4794 | free_token(token); | |
4795 | } | |
4796 | ||
4797 | /** | |
4798 | * pevent_parse_header_page - parse the data stored in the header page | |
4799 | * @pevent: the handle to the pevent | |
4800 | * @buf: the buffer storing the header page format string | |
4801 | * @size: the size of @buf | |
4802 | * @long_size: the long size to use if there is no header | |
4803 | * | |
4804 | * This parses the header page format for information on the | |
4805 | * ring buffer used. The @buf should be copied from | |
4806 | * | |
4807 | * /sys/kernel/debug/tracing/events/header_page | |
4808 | */ | |
4809 | int pevent_parse_header_page(struct pevent *pevent, char *buf, unsigned long size, | |
4810 | int long_size) | |
4811 | { | |
4812 | int ignore; | |
4813 | ||
4814 | if (!size) { | |
4815 | /* | |
4816 | * Old kernels did not have header page info. | |
4817 | * Sorry but we just use what we find here in user space. | |
4818 | */ | |
4819 | pevent->header_page_ts_size = sizeof(long long); | |
4820 | pevent->header_page_size_size = long_size; | |
4821 | pevent->header_page_data_offset = sizeof(long long) + long_size; | |
4822 | pevent->old_format = 1; | |
4823 | return -1; | |
4824 | } | |
4825 | init_input_buf(buf, size); | |
4826 | ||
4827 | parse_header_field("timestamp", &pevent->header_page_ts_offset, | |
4828 | &pevent->header_page_ts_size, 1); | |
4829 | parse_header_field("commit", &pevent->header_page_size_offset, | |
4830 | &pevent->header_page_size_size, 1); | |
4831 | parse_header_field("overwrite", &pevent->header_page_overwrite, | |
4832 | &ignore, 0); | |
4833 | parse_header_field("data", &pevent->header_page_data_offset, | |
4834 | &pevent->header_page_data_size, 1); | |
4835 | ||
4836 | return 0; | |
4837 | } | |
4838 | ||
4839 | static int event_matches(struct event_format *event, | |
4840 | int id, const char *sys_name, | |
4841 | const char *event_name) | |
4842 | { | |
4843 | if (id >= 0 && id != event->id) | |
4844 | return 0; | |
4845 | ||
4846 | if (event_name && (strcmp(event_name, event->name) != 0)) | |
4847 | return 0; | |
4848 | ||
4849 | if (sys_name && (strcmp(sys_name, event->system) != 0)) | |
4850 | return 0; | |
4851 | ||
4852 | return 1; | |
4853 | } | |
4854 | ||
4855 | static void free_handler(struct event_handler *handle) | |
4856 | { | |
4857 | free((void *)handle->sys_name); | |
4858 | free((void *)handle->event_name); | |
4859 | free(handle); | |
4860 | } | |
4861 | ||
4862 | static int find_event_handle(struct pevent *pevent, struct event_format *event) | |
4863 | { | |
4864 | struct event_handler *handle, **next; | |
4865 | ||
4866 | for (next = &pevent->handlers; *next; | |
4867 | next = &(*next)->next) { | |
4868 | handle = *next; | |
4869 | if (event_matches(event, handle->id, | |
4870 | handle->sys_name, | |
4871 | handle->event_name)) | |
4872 | break; | |
4873 | } | |
4874 | ||
4875 | if (!(*next)) | |
4876 | return 0; | |
4877 | ||
4878 | pr_stat("overriding event (%d) %s:%s with new print handler", | |
4879 | event->id, event->system, event->name); | |
4880 | ||
4881 | event->handler = handle->func; | |
4882 | event->context = handle->context; | |
4883 | ||
4884 | *next = handle->next; | |
4885 | free_handler(handle); | |
4886 | ||
4887 | return 1; | |
4888 | } | |
4889 | ||
4890 | /** | |
2b29175d | 4891 | * __pevent_parse_format - parse the event format |
f7d82350 SR |
4892 | * @buf: the buffer storing the event format string |
4893 | * @size: the size of @buf | |
4894 | * @sys: the system the event belongs to | |
4895 | * | |
4896 | * This parses the event format and creates an event structure | |
4897 | * to quickly parse raw data for a given event. | |
4898 | * | |
4899 | * These files currently come from: | |
4900 | * | |
4901 | * /sys/kernel/debug/tracing/events/.../.../format | |
4902 | */ | |
2b29175d ACM |
4903 | enum pevent_errno __pevent_parse_format(struct event_format **eventp, |
4904 | struct pevent *pevent, const char *buf, | |
4905 | unsigned long size, const char *sys) | |
f7d82350 SR |
4906 | { |
4907 | struct event_format *event; | |
4908 | int ret; | |
4909 | ||
4910 | init_input_buf(buf, size); | |
4911 | ||
2b29175d | 4912 | *eventp = event = alloc_event(); |
f7d82350 | 4913 | if (!event) |
bffddffd | 4914 | return PEVENT_ERRNO__MEM_ALLOC_FAILED; |
f7d82350 SR |
4915 | |
4916 | event->name = event_read_name(); | |
4917 | if (!event->name) { | |
4918 | /* Bad event? */ | |
bffddffd NK |
4919 | ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; |
4920 | goto event_alloc_failed; | |
f7d82350 SR |
4921 | } |
4922 | ||
4923 | if (strcmp(sys, "ftrace") == 0) { | |
f7d82350 SR |
4924 | event->flags |= EVENT_FL_ISFTRACE; |
4925 | ||
4926 | if (strcmp(event->name, "bprint") == 0) | |
4927 | event->flags |= EVENT_FL_ISBPRINT; | |
4928 | } | |
4929 | ||
4930 | event->id = event_read_id(); | |
bffddffd NK |
4931 | if (event->id < 0) { |
4932 | ret = PEVENT_ERRNO__READ_ID_FAILED; | |
4933 | /* | |
4934 | * This isn't an allocation error actually. | |
4935 | * But as the ID is critical, just bail out. | |
4936 | */ | |
4937 | goto event_alloc_failed; | |
4938 | } | |
f7d82350 SR |
4939 | |
4940 | event->system = strdup(sys); | |
bffddffd NK |
4941 | if (!event->system) { |
4942 | ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
4943 | goto event_alloc_failed; | |
4944 | } | |
f7d82350 | 4945 | |
101782ea SR |
4946 | /* Add pevent to event so that it can be referenced */ |
4947 | event->pevent = pevent; | |
4948 | ||
f7d82350 SR |
4949 | ret = event_read_format(event); |
4950 | if (ret < 0) { | |
bffddffd NK |
4951 | ret = PEVENT_ERRNO__READ_FORMAT_FAILED; |
4952 | goto event_parse_failed; | |
f7d82350 SR |
4953 | } |
4954 | ||
4955 | /* | |
4956 | * If the event has an override, don't print warnings if the event | |
4957 | * print format fails to parse. | |
4958 | */ | |
2b29175d | 4959 | if (pevent && find_event_handle(pevent, event)) |
f7d82350 SR |
4960 | show_warning = 0; |
4961 | ||
4962 | ret = event_read_print(event); | |
2b29175d ACM |
4963 | show_warning = 1; |
4964 | ||
f7d82350 | 4965 | if (ret < 0) { |
bffddffd NK |
4966 | ret = PEVENT_ERRNO__READ_PRINT_FAILED; |
4967 | goto event_parse_failed; | |
f7d82350 | 4968 | } |
f7d82350 SR |
4969 | |
4970 | if (!ret && (event->flags & EVENT_FL_ISFTRACE)) { | |
4971 | struct format_field *field; | |
4972 | struct print_arg *arg, **list; | |
4973 | ||
4974 | /* old ftrace had no args */ | |
f7d82350 SR |
4975 | list = &event->print_fmt.args; |
4976 | for (field = event->format.fields; field; field = field->next) { | |
4977 | arg = alloc_arg(); | |
b1ac754b NK |
4978 | if (!arg) { |
4979 | event->flags |= EVENT_FL_FAILED; | |
4980 | return PEVENT_ERRNO__OLD_FTRACE_ARG_FAILED; | |
4981 | } | |
f7d82350 SR |
4982 | arg->type = PRINT_FIELD; |
4983 | arg->field.name = strdup(field->name); | |
ca63858e | 4984 | if (!arg->field.name) { |
4b5632bc | 4985 | event->flags |= EVENT_FL_FAILED; |
fd34f0b2 | 4986 | free_arg(arg); |
bffddffd | 4987 | return PEVENT_ERRNO__OLD_FTRACE_ARG_FAILED; |
ca63858e | 4988 | } |
f7d82350 | 4989 | arg->field.field = field; |
fd34f0b2 NK |
4990 | *list = arg; |
4991 | list = &arg->next; | |
f7d82350 SR |
4992 | } |
4993 | return 0; | |
4994 | } | |
4995 | ||
f7d82350 SR |
4996 | return 0; |
4997 | ||
bffddffd | 4998 | event_parse_failed: |
f7d82350 | 4999 | event->flags |= EVENT_FL_FAILED; |
bffddffd NK |
5000 | return ret; |
5001 | ||
5002 | event_alloc_failed: | |
2b29175d ACM |
5003 | free(event->system); |
5004 | free(event->name); | |
5005 | free(event); | |
5006 | *eventp = NULL; | |
5007 | return ret; | |
5008 | } | |
5009 | ||
5010 | /** | |
5011 | * pevent_parse_format - parse the event format | |
5012 | * @buf: the buffer storing the event format string | |
5013 | * @size: the size of @buf | |
5014 | * @sys: the system the event belongs to | |
5015 | * | |
5016 | * This parses the event format and creates an event structure | |
5017 | * to quickly parse raw data for a given event. | |
5018 | * | |
5019 | * These files currently come from: | |
5020 | * | |
5021 | * /sys/kernel/debug/tracing/events/.../.../format | |
5022 | */ | |
5023 | enum pevent_errno pevent_parse_format(struct event_format **eventp, const char *buf, | |
5024 | unsigned long size, const char *sys) | |
5025 | { | |
5026 | return __pevent_parse_format(eventp, NULL, buf, size, sys); | |
5027 | } | |
5028 | ||
5029 | /** | |
5030 | * pevent_parse_event - parse the event format | |
5031 | * @pevent: the handle to the pevent | |
5032 | * @buf: the buffer storing the event format string | |
5033 | * @size: the size of @buf | |
5034 | * @sys: the system the event belongs to | |
5035 | * | |
5036 | * This parses the event format and creates an event structure | |
5037 | * to quickly parse raw data for a given event. | |
5038 | * | |
5039 | * These files currently come from: | |
5040 | * | |
5041 | * /sys/kernel/debug/tracing/events/.../.../format | |
5042 | */ | |
5043 | enum pevent_errno pevent_parse_event(struct pevent *pevent, const char *buf, | |
5044 | unsigned long size, const char *sys) | |
5045 | { | |
5046 | struct event_format *event = NULL; | |
5047 | int ret = __pevent_parse_format(&event, pevent, buf, size, sys); | |
5048 | ||
5049 | if (event == NULL) | |
5050 | return ret; | |
5051 | ||
f1b2256d NK |
5052 | if (add_event(pevent, event)) { |
5053 | ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
2b29175d | 5054 | goto event_add_failed; |
f1b2256d | 5055 | } |
2b29175d ACM |
5056 | |
5057 | #define PRINT_ARGS 0 | |
5058 | if (PRINT_ARGS && event->print_fmt.args) | |
5059 | print_args(event->print_fmt.args); | |
5060 | ||
5061 | return 0; | |
5062 | ||
5063 | event_add_failed: | |
f1b2256d | 5064 | pevent_free_format(event); |
bffddffd | 5065 | return ret; |
f7d82350 SR |
5066 | } |
5067 | ||
2f197b9d NK |
5068 | #undef _PE |
5069 | #define _PE(code, str) str | |
5070 | static const char * const pevent_error_str[] = { | |
5071 | PEVENT_ERRORS | |
5072 | }; | |
5073 | #undef _PE | |
5074 | ||
ca383a4d ACM |
5075 | int pevent_strerror(struct pevent *pevent __maybe_unused, |
5076 | enum pevent_errno errnum, char *buf, size_t buflen) | |
2f197b9d NK |
5077 | { |
5078 | int idx; | |
5079 | const char *msg; | |
5080 | ||
5081 | if (errnum >= 0) { | |
e1aa7c30 NK |
5082 | msg = strerror_r(errnum, buf, buflen); |
5083 | if (msg != buf) { | |
5084 | size_t len = strlen(msg); | |
9612ef67 IT |
5085 | memcpy(buf, msg, min(buflen - 1, len)); |
5086 | *(buf + min(buflen - 1, len)) = '\0'; | |
e1aa7c30 | 5087 | } |
2f197b9d NK |
5088 | return 0; |
5089 | } | |
5090 | ||
5091 | if (errnum <= __PEVENT_ERRNO__START || | |
5092 | errnum >= __PEVENT_ERRNO__END) | |
5093 | return -1; | |
5094 | ||
f63fe79f | 5095 | idx = errnum - __PEVENT_ERRNO__START - 1; |
2f197b9d NK |
5096 | msg = pevent_error_str[idx]; |
5097 | ||
5098 | switch (errnum) { | |
5099 | case PEVENT_ERRNO__MEM_ALLOC_FAILED: | |
5100 | case PEVENT_ERRNO__PARSE_EVENT_FAILED: | |
5101 | case PEVENT_ERRNO__READ_ID_FAILED: | |
5102 | case PEVENT_ERRNO__READ_FORMAT_FAILED: | |
5103 | case PEVENT_ERRNO__READ_PRINT_FAILED: | |
5104 | case PEVENT_ERRNO__OLD_FTRACE_ARG_FAILED: | |
7a905611 | 5105 | case PEVENT_ERRNO__INVALID_ARG_TYPE: |
2f197b9d NK |
5106 | snprintf(buf, buflen, "%s", msg); |
5107 | break; | |
5108 | ||
5109 | default: | |
5110 | /* cannot reach here */ | |
5111 | break; | |
5112 | } | |
5113 | ||
5114 | return 0; | |
5115 | } | |
5116 | ||
f7d82350 | 5117 | int get_field_val(struct trace_seq *s, struct format_field *field, |
1c698186 | 5118 | const char *name, struct pevent_record *record, |
f7d82350 SR |
5119 | unsigned long long *val, int err) |
5120 | { | |
5121 | if (!field) { | |
5122 | if (err) | |
5123 | trace_seq_printf(s, "<CANT FIND FIELD %s>", name); | |
5124 | return -1; | |
5125 | } | |
5126 | ||
5127 | if (pevent_read_number_field(field, record->data, val)) { | |
5128 | if (err) | |
5129 | trace_seq_printf(s, " %s=INVALID", name); | |
5130 | return -1; | |
5131 | } | |
5132 | ||
5133 | return 0; | |
5134 | } | |
5135 | ||
5136 | /** | |
5137 | * pevent_get_field_raw - return the raw pointer into the data field | |
5138 | * @s: The seq to print to on error | |
5139 | * @event: the event that the field is for | |
5140 | * @name: The name of the field | |
5141 | * @record: The record with the field name. | |
5142 | * @len: place to store the field length. | |
5143 | * @err: print default error if failed. | |
5144 | * | |
5145 | * Returns a pointer into record->data of the field and places | |
5146 | * the length of the field in @len. | |
5147 | * | |
5148 | * On failure, it returns NULL. | |
5149 | */ | |
5150 | void *pevent_get_field_raw(struct trace_seq *s, struct event_format *event, | |
1c698186 | 5151 | const char *name, struct pevent_record *record, |
f7d82350 SR |
5152 | int *len, int err) |
5153 | { | |
5154 | struct format_field *field; | |
5155 | void *data = record->data; | |
5156 | unsigned offset; | |
5157 | int dummy; | |
5158 | ||
5159 | if (!event) | |
5160 | return NULL; | |
5161 | ||
5162 | field = pevent_find_field(event, name); | |
5163 | ||
5164 | if (!field) { | |
5165 | if (err) | |
5166 | trace_seq_printf(s, "<CANT FIND FIELD %s>", name); | |
5167 | return NULL; | |
5168 | } | |
5169 | ||
5170 | /* Allow @len to be NULL */ | |
5171 | if (!len) | |
5172 | len = &dummy; | |
5173 | ||
5174 | offset = field->offset; | |
5175 | if (field->flags & FIELD_IS_DYNAMIC) { | |
5176 | offset = pevent_read_number(event->pevent, | |
5177 | data + offset, field->size); | |
5178 | *len = offset >> 16; | |
5179 | offset &= 0xffff; | |
5180 | } else | |
5181 | *len = field->size; | |
5182 | ||
5183 | return data + offset; | |
5184 | } | |
5185 | ||
5186 | /** | |
5187 | * pevent_get_field_val - find a field and return its value | |
5188 | * @s: The seq to print to on error | |
5189 | * @event: the event that the field is for | |
5190 | * @name: The name of the field | |
5191 | * @record: The record with the field name. | |
5192 | * @val: place to store the value of the field. | |
5193 | * @err: print default error if failed. | |
5194 | * | |
5195 | * Returns 0 on success -1 on field not found. | |
5196 | */ | |
5197 | int pevent_get_field_val(struct trace_seq *s, struct event_format *event, | |
1c698186 | 5198 | const char *name, struct pevent_record *record, |
f7d82350 SR |
5199 | unsigned long long *val, int err) |
5200 | { | |
5201 | struct format_field *field; | |
5202 | ||
5203 | if (!event) | |
5204 | return -1; | |
5205 | ||
5206 | field = pevent_find_field(event, name); | |
5207 | ||
5208 | return get_field_val(s, field, name, record, val, err); | |
5209 | } | |
5210 | ||
5211 | /** | |
5212 | * pevent_get_common_field_val - find a common field and return its value | |
5213 | * @s: The seq to print to on error | |
5214 | * @event: the event that the field is for | |
5215 | * @name: The name of the field | |
5216 | * @record: The record with the field name. | |
5217 | * @val: place to store the value of the field. | |
5218 | * @err: print default error if failed. | |
5219 | * | |
5220 | * Returns 0 on success -1 on field not found. | |
5221 | */ | |
5222 | int pevent_get_common_field_val(struct trace_seq *s, struct event_format *event, | |
1c698186 | 5223 | const char *name, struct pevent_record *record, |
f7d82350 SR |
5224 | unsigned long long *val, int err) |
5225 | { | |
5226 | struct format_field *field; | |
5227 | ||
5228 | if (!event) | |
5229 | return -1; | |
5230 | ||
5231 | field = pevent_find_common_field(event, name); | |
5232 | ||
5233 | return get_field_val(s, field, name, record, val, err); | |
5234 | } | |
5235 | ||
5236 | /** | |
5237 | * pevent_get_any_field_val - find a any field and return its value | |
5238 | * @s: The seq to print to on error | |
5239 | * @event: the event that the field is for | |
5240 | * @name: The name of the field | |
5241 | * @record: The record with the field name. | |
5242 | * @val: place to store the value of the field. | |
5243 | * @err: print default error if failed. | |
5244 | * | |
5245 | * Returns 0 on success -1 on field not found. | |
5246 | */ | |
5247 | int pevent_get_any_field_val(struct trace_seq *s, struct event_format *event, | |
1c698186 | 5248 | const char *name, struct pevent_record *record, |
f7d82350 SR |
5249 | unsigned long long *val, int err) |
5250 | { | |
5251 | struct format_field *field; | |
5252 | ||
5253 | if (!event) | |
5254 | return -1; | |
5255 | ||
5256 | field = pevent_find_any_field(event, name); | |
5257 | ||
5258 | return get_field_val(s, field, name, record, val, err); | |
5259 | } | |
5260 | ||
5261 | /** | |
5262 | * pevent_print_num_field - print a field and a format | |
5263 | * @s: The seq to print to | |
5264 | * @fmt: The printf format to print the field with. | |
5265 | * @event: the event that the field is for | |
5266 | * @name: The name of the field | |
5267 | * @record: The record with the field name. | |
5268 | * @err: print default error if failed. | |
5269 | * | |
16e6b8fd | 5270 | * Returns: 0 on success, -1 field not found, or 1 if buffer is full. |
f7d82350 SR |
5271 | */ |
5272 | int pevent_print_num_field(struct trace_seq *s, const char *fmt, | |
5273 | struct event_format *event, const char *name, | |
1c698186 | 5274 | struct pevent_record *record, int err) |
f7d82350 SR |
5275 | { |
5276 | struct format_field *field = pevent_find_field(event, name); | |
5277 | unsigned long long val; | |
5278 | ||
5279 | if (!field) | |
5280 | goto failed; | |
5281 | ||
5282 | if (pevent_read_number_field(field, record->data, &val)) | |
5283 | goto failed; | |
5284 | ||
5285 | return trace_seq_printf(s, fmt, val); | |
5286 | ||
5287 | failed: | |
5288 | if (err) | |
5289 | trace_seq_printf(s, "CAN'T FIND FIELD \"%s\"", name); | |
5290 | return -1; | |
5291 | } | |
5292 | ||
5293 | static void free_func_handle(struct pevent_function_handler *func) | |
5294 | { | |
5295 | struct pevent_func_params *params; | |
5296 | ||
5297 | free(func->name); | |
5298 | ||
5299 | while (func->params) { | |
5300 | params = func->params; | |
5301 | func->params = params->next; | |
5302 | free(params); | |
5303 | } | |
5304 | ||
5305 | free(func); | |
5306 | } | |
5307 | ||
5308 | /** | |
5309 | * pevent_register_print_function - register a helper function | |
5310 | * @pevent: the handle to the pevent | |
5311 | * @func: the function to process the helper function | |
16e6b8fd | 5312 | * @ret_type: the return type of the helper function |
f7d82350 SR |
5313 | * @name: the name of the helper function |
5314 | * @parameters: A list of enum pevent_func_arg_type | |
5315 | * | |
5316 | * Some events may have helper functions in the print format arguments. | |
16e6b8fd | 5317 | * This allows a plugin to dynamically create a way to process one |
f7d82350 SR |
5318 | * of these functions. |
5319 | * | |
5320 | * The @parameters is a variable list of pevent_func_arg_type enums that | |
5321 | * must end with PEVENT_FUNC_ARG_VOID. | |
5322 | */ | |
5323 | int pevent_register_print_function(struct pevent *pevent, | |
5324 | pevent_func_handler func, | |
5325 | enum pevent_func_arg_type ret_type, | |
5326 | char *name, ...) | |
5327 | { | |
5328 | struct pevent_function_handler *func_handle; | |
5329 | struct pevent_func_params **next_param; | |
5330 | struct pevent_func_params *param; | |
5331 | enum pevent_func_arg_type type; | |
5332 | va_list ap; | |
67ed939c | 5333 | int ret; |
f7d82350 SR |
5334 | |
5335 | func_handle = find_func_handler(pevent, name); | |
5336 | if (func_handle) { | |
5337 | /* | |
5338 | * This is most like caused by the users own | |
5339 | * plugins updating the function. This overrides the | |
5340 | * system defaults. | |
5341 | */ | |
5342 | pr_stat("override of function helper '%s'", name); | |
5343 | remove_func_handler(pevent, name); | |
5344 | } | |
5345 | ||
87162d81 | 5346 | func_handle = calloc(1, sizeof(*func_handle)); |
67ed939c NK |
5347 | if (!func_handle) { |
5348 | do_warning("Failed to allocate function handler"); | |
5349 | return PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
5350 | } | |
f7d82350 SR |
5351 | |
5352 | func_handle->ret_type = ret_type; | |
5353 | func_handle->name = strdup(name); | |
5354 | func_handle->func = func; | |
67ed939c NK |
5355 | if (!func_handle->name) { |
5356 | do_warning("Failed to allocate function name"); | |
5357 | free(func_handle); | |
5358 | return PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
5359 | } | |
f7d82350 SR |
5360 | |
5361 | next_param = &(func_handle->params); | |
5362 | va_start(ap, name); | |
5363 | for (;;) { | |
5364 | type = va_arg(ap, enum pevent_func_arg_type); | |
5365 | if (type == PEVENT_FUNC_ARG_VOID) | |
5366 | break; | |
5367 | ||
e46466b8 | 5368 | if (type >= PEVENT_FUNC_ARG_MAX_TYPES) { |
67ed939c NK |
5369 | do_warning("Invalid argument type %d", type); |
5370 | ret = PEVENT_ERRNO__INVALID_ARG_TYPE; | |
f7d82350 SR |
5371 | goto out_free; |
5372 | } | |
5373 | ||
67ed939c NK |
5374 | param = malloc(sizeof(*param)); |
5375 | if (!param) { | |
5376 | do_warning("Failed to allocate function param"); | |
5377 | ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
5378 | goto out_free; | |
5379 | } | |
f7d82350 SR |
5380 | param->type = type; |
5381 | param->next = NULL; | |
5382 | ||
5383 | *next_param = param; | |
5384 | next_param = &(param->next); | |
5385 | ||
5386 | func_handle->nr_args++; | |
5387 | } | |
5388 | va_end(ap); | |
5389 | ||
5390 | func_handle->next = pevent->func_handlers; | |
5391 | pevent->func_handlers = func_handle; | |
5392 | ||
5393 | return 0; | |
5394 | out_free: | |
5395 | va_end(ap); | |
5396 | free_func_handle(func_handle); | |
67ed939c | 5397 | return ret; |
f7d82350 SR |
5398 | } |
5399 | ||
5400 | /** | |
16e6b8fd | 5401 | * pevent_register_event_handler - register a way to parse an event |
f7d82350 SR |
5402 | * @pevent: the handle to the pevent |
5403 | * @id: the id of the event to register | |
5404 | * @sys_name: the system name the event belongs to | |
5405 | * @event_name: the name of the event | |
5406 | * @func: the function to call to parse the event information | |
16e6b8fd | 5407 | * @context: the data to be passed to @func |
f7d82350 SR |
5408 | * |
5409 | * This function allows a developer to override the parsing of | |
5410 | * a given event. If for some reason the default print format | |
5411 | * is not sufficient, this function will register a function | |
5412 | * for an event to be used to parse the data instead. | |
5413 | * | |
5414 | * If @id is >= 0, then it is used to find the event. | |
5415 | * else @sys_name and @event_name are used. | |
5416 | */ | |
5417 | int pevent_register_event_handler(struct pevent *pevent, | |
5418 | int id, char *sys_name, char *event_name, | |
5419 | pevent_event_handler_func func, | |
5420 | void *context) | |
5421 | { | |
5422 | struct event_format *event; | |
5423 | struct event_handler *handle; | |
5424 | ||
5425 | if (id >= 0) { | |
5426 | /* search by id */ | |
5427 | event = pevent_find_event(pevent, id); | |
5428 | if (!event) | |
5429 | goto not_found; | |
5430 | if (event_name && (strcmp(event_name, event->name) != 0)) | |
5431 | goto not_found; | |
5432 | if (sys_name && (strcmp(sys_name, event->system) != 0)) | |
5433 | goto not_found; | |
5434 | } else { | |
5435 | event = pevent_find_event_by_name(pevent, sys_name, event_name); | |
5436 | if (!event) | |
5437 | goto not_found; | |
5438 | } | |
5439 | ||
5440 | pr_stat("overriding event (%d) %s:%s with new print handler", | |
5441 | event->id, event->system, event->name); | |
5442 | ||
5443 | event->handler = func; | |
5444 | event->context = context; | |
5445 | return 0; | |
5446 | ||
5447 | not_found: | |
5448 | /* Save for later use. */ | |
87162d81 | 5449 | handle = calloc(1, sizeof(*handle)); |
0ca8da00 NK |
5450 | if (!handle) { |
5451 | do_warning("Failed to allocate event handler"); | |
5452 | return PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
5453 | } | |
5454 | ||
f7d82350 SR |
5455 | handle->id = id; |
5456 | if (event_name) | |
5457 | handle->event_name = strdup(event_name); | |
5458 | if (sys_name) | |
5459 | handle->sys_name = strdup(sys_name); | |
5460 | ||
ca63858e NK |
5461 | if ((event_name && !handle->event_name) || |
5462 | (sys_name && !handle->sys_name)) { | |
0ca8da00 NK |
5463 | do_warning("Failed to allocate event/sys name"); |
5464 | free((void *)handle->event_name); | |
5465 | free((void *)handle->sys_name); | |
5466 | free(handle); | |
5467 | return PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
ca63858e NK |
5468 | } |
5469 | ||
f7d82350 SR |
5470 | handle->func = func; |
5471 | handle->next = pevent->handlers; | |
5472 | pevent->handlers = handle; | |
5473 | handle->context = context; | |
5474 | ||
5475 | return -1; | |
5476 | } | |
5477 | ||
5478 | /** | |
5479 | * pevent_alloc - create a pevent handle | |
5480 | */ | |
5481 | struct pevent *pevent_alloc(void) | |
5482 | { | |
87162d81 | 5483 | struct pevent *pevent = calloc(1, sizeof(*pevent)); |
f7d82350 | 5484 | |
87162d81 ACM |
5485 | if (pevent) |
5486 | pevent->ref_count = 1; | |
f7d82350 SR |
5487 | |
5488 | return pevent; | |
5489 | } | |
5490 | ||
5491 | void pevent_ref(struct pevent *pevent) | |
5492 | { | |
5493 | pevent->ref_count++; | |
5494 | } | |
5495 | ||
5496 | static void free_format_fields(struct format_field *field) | |
5497 | { | |
5498 | struct format_field *next; | |
5499 | ||
5500 | while (field) { | |
5501 | next = field->next; | |
5502 | free(field->type); | |
5503 | free(field->name); | |
5504 | free(field); | |
5505 | field = next; | |
5506 | } | |
5507 | } | |
5508 | ||
5509 | static void free_formats(struct format *format) | |
5510 | { | |
5511 | free_format_fields(format->common_fields); | |
5512 | free_format_fields(format->fields); | |
5513 | } | |
5514 | ||
2b29175d | 5515 | void pevent_free_format(struct event_format *event) |
f7d82350 SR |
5516 | { |
5517 | free(event->name); | |
5518 | free(event->system); | |
5519 | ||
5520 | free_formats(&event->format); | |
5521 | ||
5522 | free(event->print_fmt.format); | |
5523 | free_args(event->print_fmt.args); | |
5524 | ||
5525 | free(event); | |
5526 | } | |
5527 | ||
5528 | /** | |
5529 | * pevent_free - free a pevent handle | |
5530 | * @pevent: the pevent handle to free | |
5531 | */ | |
5532 | void pevent_free(struct pevent *pevent) | |
5533 | { | |
a2525a08 SR |
5534 | struct cmdline_list *cmdlist, *cmdnext; |
5535 | struct func_list *funclist, *funcnext; | |
5536 | struct printk_list *printklist, *printknext; | |
f7d82350 SR |
5537 | struct pevent_function_handler *func_handler; |
5538 | struct event_handler *handle; | |
5539 | int i; | |
5540 | ||
a2525a08 SR |
5541 | if (!pevent) |
5542 | return; | |
5543 | ||
5544 | cmdlist = pevent->cmdlist; | |
5545 | funclist = pevent->funclist; | |
5546 | printklist = pevent->printklist; | |
5547 | ||
f7d82350 SR |
5548 | pevent->ref_count--; |
5549 | if (pevent->ref_count) | |
5550 | return; | |
5551 | ||
5552 | if (pevent->cmdlines) { | |
5553 | for (i = 0; i < pevent->cmdline_count; i++) | |
5554 | free(pevent->cmdlines[i].comm); | |
5555 | free(pevent->cmdlines); | |
5556 | } | |
5557 | ||
5558 | while (cmdlist) { | |
5559 | cmdnext = cmdlist->next; | |
5560 | free(cmdlist->comm); | |
5561 | free(cmdlist); | |
5562 | cmdlist = cmdnext; | |
5563 | } | |
5564 | ||
5565 | if (pevent->func_map) { | |
8a38cce4 | 5566 | for (i = 0; i < (int)pevent->func_count; i++) { |
f7d82350 SR |
5567 | free(pevent->func_map[i].func); |
5568 | free(pevent->func_map[i].mod); | |
5569 | } | |
5570 | free(pevent->func_map); | |
5571 | } | |
5572 | ||
5573 | while (funclist) { | |
5574 | funcnext = funclist->next; | |
5575 | free(funclist->func); | |
5576 | free(funclist->mod); | |
5577 | free(funclist); | |
5578 | funclist = funcnext; | |
5579 | } | |
5580 | ||
5581 | while (pevent->func_handlers) { | |
5582 | func_handler = pevent->func_handlers; | |
5583 | pevent->func_handlers = func_handler->next; | |
5584 | free_func_handle(func_handler); | |
5585 | } | |
5586 | ||
5587 | if (pevent->printk_map) { | |
8a38cce4 | 5588 | for (i = 0; i < (int)pevent->printk_count; i++) |
f7d82350 SR |
5589 | free(pevent->printk_map[i].printk); |
5590 | free(pevent->printk_map); | |
5591 | } | |
5592 | ||
5593 | while (printklist) { | |
5594 | printknext = printklist->next; | |
5595 | free(printklist->printk); | |
5596 | free(printklist); | |
5597 | printklist = printknext; | |
5598 | } | |
5599 | ||
5600 | for (i = 0; i < pevent->nr_events; i++) | |
2b29175d | 5601 | pevent_free_format(pevent->events[i]); |
f7d82350 SR |
5602 | |
5603 | while (pevent->handlers) { | |
5604 | handle = pevent->handlers; | |
5605 | pevent->handlers = handle->next; | |
5606 | free_handler(handle); | |
5607 | } | |
5608 | ||
5609 | free(pevent->events); | |
5610 | free(pevent->sort_events); | |
5611 | ||
5612 | free(pevent); | |
5613 | } | |
5614 | ||
5615 | void pevent_unref(struct pevent *pevent) | |
5616 | { | |
5617 | pevent_free(pevent); | |
5618 | } |