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 | ||
1b372ca5 YY |
308 | void pevent_register_trace_clock(struct pevent *pevent, char *trace_clock) |
309 | { | |
310 | pevent->trace_clock = trace_clock; | |
311 | } | |
312 | ||
f7d82350 SR |
313 | struct func_map { |
314 | unsigned long long addr; | |
315 | char *func; | |
316 | char *mod; | |
317 | }; | |
318 | ||
319 | struct func_list { | |
320 | struct func_list *next; | |
321 | unsigned long long addr; | |
322 | char *func; | |
323 | char *mod; | |
324 | }; | |
325 | ||
326 | static int func_cmp(const void *a, const void *b) | |
327 | { | |
328 | const struct func_map *fa = a; | |
329 | const struct func_map *fb = b; | |
330 | ||
331 | if (fa->addr < fb->addr) | |
332 | return -1; | |
333 | if (fa->addr > fb->addr) | |
334 | return 1; | |
335 | ||
336 | return 0; | |
337 | } | |
338 | ||
339 | /* | |
340 | * We are searching for a record in between, not an exact | |
341 | * match. | |
342 | */ | |
343 | static int func_bcmp(const void *a, const void *b) | |
344 | { | |
345 | const struct func_map *fa = a; | |
346 | const struct func_map *fb = b; | |
347 | ||
348 | if ((fa->addr == fb->addr) || | |
349 | ||
350 | (fa->addr > fb->addr && | |
351 | fa->addr < (fb+1)->addr)) | |
352 | return 0; | |
353 | ||
354 | if (fa->addr < fb->addr) | |
355 | return -1; | |
356 | ||
357 | return 1; | |
358 | } | |
359 | ||
360 | static int func_map_init(struct pevent *pevent) | |
361 | { | |
362 | struct func_list *funclist; | |
363 | struct func_list *item; | |
364 | struct func_map *func_map; | |
365 | int i; | |
366 | ||
a6d2a61a ACM |
367 | func_map = malloc(sizeof(*func_map) * (pevent->func_count + 1)); |
368 | if (!func_map) | |
369 | return -1; | |
370 | ||
f7d82350 SR |
371 | funclist = pevent->funclist; |
372 | ||
373 | i = 0; | |
374 | while (funclist) { | |
375 | func_map[i].func = funclist->func; | |
376 | func_map[i].addr = funclist->addr; | |
377 | func_map[i].mod = funclist->mod; | |
378 | i++; | |
379 | item = funclist; | |
380 | funclist = funclist->next; | |
381 | free(item); | |
382 | } | |
383 | ||
384 | qsort(func_map, pevent->func_count, sizeof(*func_map), func_cmp); | |
385 | ||
386 | /* | |
387 | * Add a special record at the end. | |
388 | */ | |
389 | func_map[pevent->func_count].func = NULL; | |
390 | func_map[pevent->func_count].addr = 0; | |
391 | func_map[pevent->func_count].mod = NULL; | |
392 | ||
393 | pevent->func_map = func_map; | |
394 | pevent->funclist = NULL; | |
395 | ||
396 | return 0; | |
397 | } | |
398 | ||
399 | static struct func_map * | |
400 | find_func(struct pevent *pevent, unsigned long long addr) | |
401 | { | |
402 | struct func_map *func; | |
403 | struct func_map key; | |
404 | ||
405 | if (!pevent->func_map) | |
406 | func_map_init(pevent); | |
407 | ||
408 | key.addr = addr; | |
409 | ||
410 | func = bsearch(&key, pevent->func_map, pevent->func_count, | |
411 | sizeof(*pevent->func_map), func_bcmp); | |
412 | ||
413 | return func; | |
414 | } | |
415 | ||
416 | /** | |
417 | * pevent_find_function - find a function by a given address | |
418 | * @pevent: handle for the pevent | |
419 | * @addr: the address to find the function with | |
420 | * | |
421 | * Returns a pointer to the function stored that has the given | |
422 | * address. Note, the address does not have to be exact, it | |
423 | * will select the function that would contain the address. | |
424 | */ | |
425 | const char *pevent_find_function(struct pevent *pevent, unsigned long long addr) | |
426 | { | |
427 | struct func_map *map; | |
428 | ||
429 | map = find_func(pevent, addr); | |
430 | if (!map) | |
431 | return NULL; | |
432 | ||
433 | return map->func; | |
434 | } | |
435 | ||
436 | /** | |
437 | * pevent_find_function_address - find a function address by a given address | |
438 | * @pevent: handle for the pevent | |
439 | * @addr: the address to find the function with | |
440 | * | |
441 | * Returns the address the function starts at. This can be used in | |
442 | * conjunction with pevent_find_function to print both the function | |
443 | * name and the function offset. | |
444 | */ | |
445 | unsigned long long | |
446 | pevent_find_function_address(struct pevent *pevent, unsigned long long addr) | |
447 | { | |
448 | struct func_map *map; | |
449 | ||
450 | map = find_func(pevent, addr); | |
451 | if (!map) | |
452 | return 0; | |
453 | ||
454 | return map->addr; | |
455 | } | |
456 | ||
457 | /** | |
458 | * pevent_register_function - register a function with a given address | |
459 | * @pevent: handle for the pevent | |
460 | * @function: the function name to register | |
461 | * @addr: the address the function starts at | |
462 | * @mod: the kernel module the function may be in (NULL for none) | |
463 | * | |
464 | * This registers a function name with an address and module. | |
465 | * The @func passed in is duplicated. | |
466 | */ | |
467 | int pevent_register_function(struct pevent *pevent, char *func, | |
468 | unsigned long long addr, char *mod) | |
469 | { | |
a6d2a61a | 470 | struct func_list *item = malloc(sizeof(*item)); |
f7d82350 | 471 | |
a6d2a61a ACM |
472 | if (!item) |
473 | return -1; | |
f7d82350 SR |
474 | |
475 | item->next = pevent->funclist; | |
476 | item->func = strdup(func); | |
a6d2a61a ACM |
477 | if (!item->func) |
478 | goto out_free; | |
479 | ||
480 | if (mod) { | |
f7d82350 | 481 | item->mod = strdup(mod); |
a6d2a61a ACM |
482 | if (!item->mod) |
483 | goto out_free_func; | |
484 | } else | |
f7d82350 SR |
485 | item->mod = NULL; |
486 | item->addr = addr; | |
487 | ||
ca63858e | 488 | pevent->funclist = item; |
f7d82350 SR |
489 | pevent->func_count++; |
490 | ||
491 | return 0; | |
a6d2a61a ACM |
492 | |
493 | out_free_func: | |
494 | free(item->func); | |
495 | item->func = NULL; | |
496 | out_free: | |
497 | free(item); | |
498 | errno = ENOMEM; | |
499 | return -1; | |
f7d82350 SR |
500 | } |
501 | ||
502 | /** | |
503 | * pevent_print_funcs - print out the stored functions | |
504 | * @pevent: handle for the pevent | |
505 | * | |
506 | * This prints out the stored functions. | |
507 | */ | |
508 | void pevent_print_funcs(struct pevent *pevent) | |
509 | { | |
510 | int i; | |
511 | ||
512 | if (!pevent->func_map) | |
513 | func_map_init(pevent); | |
514 | ||
515 | for (i = 0; i < (int)pevent->func_count; i++) { | |
516 | printf("%016llx %s", | |
517 | pevent->func_map[i].addr, | |
518 | pevent->func_map[i].func); | |
519 | if (pevent->func_map[i].mod) | |
520 | printf(" [%s]\n", pevent->func_map[i].mod); | |
521 | else | |
522 | printf("\n"); | |
523 | } | |
524 | } | |
525 | ||
526 | struct printk_map { | |
527 | unsigned long long addr; | |
528 | char *printk; | |
529 | }; | |
530 | ||
531 | struct printk_list { | |
532 | struct printk_list *next; | |
533 | unsigned long long addr; | |
534 | char *printk; | |
535 | }; | |
536 | ||
537 | static int printk_cmp(const void *a, const void *b) | |
538 | { | |
0fc45ef5 NK |
539 | const struct printk_map *pa = a; |
540 | const struct printk_map *pb = b; | |
f7d82350 | 541 | |
0fc45ef5 | 542 | if (pa->addr < pb->addr) |
f7d82350 | 543 | return -1; |
0fc45ef5 | 544 | if (pa->addr > pb->addr) |
f7d82350 SR |
545 | return 1; |
546 | ||
547 | return 0; | |
548 | } | |
549 | ||
a6d2a61a | 550 | static int printk_map_init(struct pevent *pevent) |
f7d82350 SR |
551 | { |
552 | struct printk_list *printklist; | |
553 | struct printk_list *item; | |
554 | struct printk_map *printk_map; | |
555 | int i; | |
556 | ||
a6d2a61a ACM |
557 | printk_map = malloc(sizeof(*printk_map) * (pevent->printk_count + 1)); |
558 | if (!printk_map) | |
559 | return -1; | |
f7d82350 SR |
560 | |
561 | printklist = pevent->printklist; | |
562 | ||
563 | i = 0; | |
564 | while (printklist) { | |
565 | printk_map[i].printk = printklist->printk; | |
566 | printk_map[i].addr = printklist->addr; | |
567 | i++; | |
568 | item = printklist; | |
569 | printklist = printklist->next; | |
570 | free(item); | |
571 | } | |
572 | ||
573 | qsort(printk_map, pevent->printk_count, sizeof(*printk_map), printk_cmp); | |
574 | ||
575 | pevent->printk_map = printk_map; | |
576 | pevent->printklist = NULL; | |
a6d2a61a ACM |
577 | |
578 | return 0; | |
f7d82350 SR |
579 | } |
580 | ||
581 | static struct printk_map * | |
582 | find_printk(struct pevent *pevent, unsigned long long addr) | |
583 | { | |
584 | struct printk_map *printk; | |
585 | struct printk_map key; | |
586 | ||
a6d2a61a ACM |
587 | if (!pevent->printk_map && printk_map_init(pevent)) |
588 | return NULL; | |
f7d82350 SR |
589 | |
590 | key.addr = addr; | |
591 | ||
592 | printk = bsearch(&key, pevent->printk_map, pevent->printk_count, | |
593 | sizeof(*pevent->printk_map), printk_cmp); | |
594 | ||
595 | return printk; | |
596 | } | |
597 | ||
598 | /** | |
599 | * pevent_register_print_string - register a string by its address | |
600 | * @pevent: handle for the pevent | |
601 | * @fmt: the string format to register | |
602 | * @addr: the address the string was located at | |
603 | * | |
604 | * This registers a string by the address it was stored in the kernel. | |
605 | * The @fmt passed in is duplicated. | |
606 | */ | |
18900af8 | 607 | int pevent_register_print_string(struct pevent *pevent, const char *fmt, |
f7d82350 SR |
608 | unsigned long long addr) |
609 | { | |
a6d2a61a | 610 | struct printk_list *item = malloc(sizeof(*item)); |
18900af8 | 611 | char *p; |
f7d82350 | 612 | |
a6d2a61a ACM |
613 | if (!item) |
614 | return -1; | |
f7d82350 SR |
615 | |
616 | item->next = pevent->printklist; | |
f7d82350 SR |
617 | item->addr = addr; |
618 | ||
18900af8 SRRH |
619 | /* Strip off quotes and '\n' from the end */ |
620 | if (fmt[0] == '"') | |
621 | fmt++; | |
a6d2a61a | 622 | item->printk = strdup(fmt); |
ca63858e | 623 | if (!item->printk) |
a6d2a61a | 624 | goto out_free; |
ca63858e | 625 | |
18900af8 SRRH |
626 | p = item->printk + strlen(item->printk) - 1; |
627 | if (*p == '"') | |
628 | *p = 0; | |
629 | ||
630 | p -= 2; | |
631 | if (strcmp(p, "\\n") == 0) | |
632 | *p = 0; | |
633 | ||
ca63858e | 634 | pevent->printklist = item; |
f7d82350 SR |
635 | pevent->printk_count++; |
636 | ||
637 | return 0; | |
a6d2a61a ACM |
638 | |
639 | out_free: | |
640 | free(item); | |
641 | errno = ENOMEM; | |
642 | return -1; | |
f7d82350 SR |
643 | } |
644 | ||
645 | /** | |
646 | * pevent_print_printk - print out the stored strings | |
647 | * @pevent: handle for the pevent | |
648 | * | |
649 | * This prints the string formats that were stored. | |
650 | */ | |
651 | void pevent_print_printk(struct pevent *pevent) | |
652 | { | |
653 | int i; | |
654 | ||
655 | if (!pevent->printk_map) | |
656 | printk_map_init(pevent); | |
657 | ||
658 | for (i = 0; i < (int)pevent->printk_count; i++) { | |
659 | printf("%016llx %s\n", | |
660 | pevent->printk_map[i].addr, | |
661 | pevent->printk_map[i].printk); | |
662 | } | |
663 | } | |
664 | ||
665 | static struct event_format *alloc_event(void) | |
666 | { | |
87162d81 | 667 | return calloc(1, sizeof(struct event_format)); |
f7d82350 SR |
668 | } |
669 | ||
a6d2a61a | 670 | static int add_event(struct pevent *pevent, struct event_format *event) |
f7d82350 SR |
671 | { |
672 | int i; | |
a6d2a61a ACM |
673 | struct event_format **events = realloc(pevent->events, sizeof(event) * |
674 | (pevent->nr_events + 1)); | |
675 | if (!events) | |
676 | return -1; | |
f7d82350 | 677 | |
a6d2a61a | 678 | pevent->events = events; |
f7d82350 SR |
679 | |
680 | for (i = 0; i < pevent->nr_events; i++) { | |
681 | if (pevent->events[i]->id > event->id) | |
682 | break; | |
683 | } | |
684 | if (i < pevent->nr_events) | |
685 | memmove(&pevent->events[i + 1], | |
686 | &pevent->events[i], | |
687 | sizeof(event) * (pevent->nr_events - i)); | |
688 | ||
689 | pevent->events[i] = event; | |
690 | pevent->nr_events++; | |
691 | ||
692 | event->pevent = pevent; | |
a6d2a61a ACM |
693 | |
694 | return 0; | |
f7d82350 SR |
695 | } |
696 | ||
697 | static int event_item_type(enum event_type type) | |
698 | { | |
699 | switch (type) { | |
700 | case EVENT_ITEM ... EVENT_SQUOTE: | |
701 | return 1; | |
702 | case EVENT_ERROR ... EVENT_DELIM: | |
703 | default: | |
704 | return 0; | |
705 | } | |
706 | } | |
707 | ||
708 | static void free_flag_sym(struct print_flag_sym *fsym) | |
709 | { | |
710 | struct print_flag_sym *next; | |
711 | ||
712 | while (fsym) { | |
713 | next = fsym->next; | |
714 | free(fsym->value); | |
715 | free(fsym->str); | |
716 | free(fsym); | |
717 | fsym = next; | |
718 | } | |
719 | } | |
720 | ||
721 | static void free_arg(struct print_arg *arg) | |
722 | { | |
723 | struct print_arg *farg; | |
724 | ||
725 | if (!arg) | |
726 | return; | |
727 | ||
728 | switch (arg->type) { | |
729 | case PRINT_ATOM: | |
730 | free(arg->atom.atom); | |
731 | break; | |
732 | case PRINT_FIELD: | |
733 | free(arg->field.name); | |
734 | break; | |
735 | case PRINT_FLAGS: | |
736 | free_arg(arg->flags.field); | |
737 | free(arg->flags.delim); | |
738 | free_flag_sym(arg->flags.flags); | |
739 | break; | |
740 | case PRINT_SYMBOL: | |
741 | free_arg(arg->symbol.field); | |
742 | free_flag_sym(arg->symbol.symbols); | |
743 | break; | |
e080e6f1 NK |
744 | case PRINT_HEX: |
745 | free_arg(arg->hex.field); | |
746 | free_arg(arg->hex.size); | |
747 | break; | |
f7d82350 SR |
748 | case PRINT_TYPE: |
749 | free(arg->typecast.type); | |
750 | free_arg(arg->typecast.item); | |
751 | break; | |
752 | case PRINT_STRING: | |
753 | case PRINT_BSTRING: | |
754 | free(arg->string.string); | |
755 | break; | |
756 | case PRINT_DYNAMIC_ARRAY: | |
757 | free(arg->dynarray.index); | |
758 | break; | |
759 | case PRINT_OP: | |
760 | free(arg->op.op); | |
761 | free_arg(arg->op.left); | |
762 | free_arg(arg->op.right); | |
763 | break; | |
764 | case PRINT_FUNC: | |
765 | while (arg->func.args) { | |
766 | farg = arg->func.args; | |
767 | arg->func.args = farg->next; | |
768 | free_arg(farg); | |
769 | } | |
770 | break; | |
771 | ||
772 | case PRINT_NULL: | |
773 | default: | |
774 | break; | |
775 | } | |
776 | ||
777 | free(arg); | |
778 | } | |
779 | ||
780 | static enum event_type get_type(int ch) | |
781 | { | |
782 | if (ch == '\n') | |
783 | return EVENT_NEWLINE; | |
784 | if (isspace(ch)) | |
785 | return EVENT_SPACE; | |
786 | if (isalnum(ch) || ch == '_') | |
787 | return EVENT_ITEM; | |
788 | if (ch == '\'') | |
789 | return EVENT_SQUOTE; | |
790 | if (ch == '"') | |
791 | return EVENT_DQUOTE; | |
792 | if (!isprint(ch)) | |
793 | return EVENT_NONE; | |
794 | if (ch == '(' || ch == ')' || ch == ',') | |
795 | return EVENT_DELIM; | |
796 | ||
797 | return EVENT_OP; | |
798 | } | |
799 | ||
800 | static int __read_char(void) | |
801 | { | |
802 | if (input_buf_ptr >= input_buf_siz) | |
803 | return -1; | |
804 | ||
805 | return input_buf[input_buf_ptr++]; | |
806 | } | |
807 | ||
808 | static int __peek_char(void) | |
809 | { | |
810 | if (input_buf_ptr >= input_buf_siz) | |
811 | return -1; | |
812 | ||
813 | return input_buf[input_buf_ptr]; | |
814 | } | |
815 | ||
816 | /** | |
817 | * pevent_peek_char - peek at the next character that will be read | |
818 | * | |
819 | * Returns the next character read, or -1 if end of buffer. | |
820 | */ | |
821 | int pevent_peek_char(void) | |
822 | { | |
823 | return __peek_char(); | |
824 | } | |
825 | ||
deba3fb2 NK |
826 | static int extend_token(char **tok, char *buf, int size) |
827 | { | |
828 | char *newtok = realloc(*tok, size); | |
829 | ||
830 | if (!newtok) { | |
831 | free(*tok); | |
832 | *tok = NULL; | |
833 | return -1; | |
834 | } | |
835 | ||
836 | if (!*tok) | |
837 | strcpy(newtok, buf); | |
838 | else | |
839 | strcat(newtok, buf); | |
840 | *tok = newtok; | |
841 | ||
842 | return 0; | |
843 | } | |
844 | ||
f7d82350 SR |
845 | static enum event_type force_token(const char *str, char **tok); |
846 | ||
847 | static enum event_type __read_token(char **tok) | |
848 | { | |
849 | char buf[BUFSIZ]; | |
850 | int ch, last_ch, quote_ch, next_ch; | |
851 | int i = 0; | |
852 | int tok_size = 0; | |
853 | enum event_type type; | |
854 | ||
855 | *tok = NULL; | |
856 | ||
857 | ||
858 | ch = __read_char(); | |
859 | if (ch < 0) | |
860 | return EVENT_NONE; | |
861 | ||
862 | type = get_type(ch); | |
863 | if (type == EVENT_NONE) | |
864 | return type; | |
865 | ||
866 | buf[i++] = ch; | |
867 | ||
868 | switch (type) { | |
869 | case EVENT_NEWLINE: | |
870 | case EVENT_DELIM: | |
0dbca1e3 ACM |
871 | if (asprintf(tok, "%c", ch) < 0) |
872 | return EVENT_ERROR; | |
873 | ||
f7d82350 SR |
874 | return type; |
875 | ||
876 | case EVENT_OP: | |
877 | switch (ch) { | |
878 | case '-': | |
879 | next_ch = __peek_char(); | |
880 | if (next_ch == '>') { | |
881 | buf[i++] = __read_char(); | |
882 | break; | |
883 | } | |
884 | /* fall through */ | |
885 | case '+': | |
886 | case '|': | |
887 | case '&': | |
888 | case '>': | |
889 | case '<': | |
890 | last_ch = ch; | |
891 | ch = __peek_char(); | |
892 | if (ch != last_ch) | |
893 | goto test_equal; | |
894 | buf[i++] = __read_char(); | |
895 | switch (last_ch) { | |
896 | case '>': | |
897 | case '<': | |
898 | goto test_equal; | |
899 | default: | |
900 | break; | |
901 | } | |
902 | break; | |
903 | case '!': | |
904 | case '=': | |
905 | goto test_equal; | |
906 | default: /* what should we do instead? */ | |
907 | break; | |
908 | } | |
909 | buf[i] = 0; | |
910 | *tok = strdup(buf); | |
911 | return type; | |
912 | ||
913 | test_equal: | |
914 | ch = __peek_char(); | |
915 | if (ch == '=') | |
916 | buf[i++] = __read_char(); | |
917 | goto out; | |
918 | ||
919 | case EVENT_DQUOTE: | |
920 | case EVENT_SQUOTE: | |
921 | /* don't keep quotes */ | |
922 | i--; | |
923 | quote_ch = ch; | |
924 | last_ch = 0; | |
925 | concat: | |
926 | do { | |
927 | if (i == (BUFSIZ - 1)) { | |
928 | buf[i] = 0; | |
f7d82350 | 929 | tok_size += BUFSIZ; |
deba3fb2 NK |
930 | |
931 | if (extend_token(tok, buf, tok_size) < 0) | |
932 | return EVENT_NONE; | |
f7d82350 SR |
933 | i = 0; |
934 | } | |
935 | last_ch = ch; | |
936 | ch = __read_char(); | |
937 | buf[i++] = ch; | |
938 | /* the '\' '\' will cancel itself */ | |
939 | if (ch == '\\' && last_ch == '\\') | |
940 | last_ch = 0; | |
941 | } while (ch != quote_ch || last_ch == '\\'); | |
942 | /* remove the last quote */ | |
943 | i--; | |
944 | ||
945 | /* | |
946 | * For strings (double quotes) check the next token. | |
947 | * If it is another string, concatinate the two. | |
948 | */ | |
949 | if (type == EVENT_DQUOTE) { | |
950 | unsigned long long save_input_buf_ptr = input_buf_ptr; | |
951 | ||
952 | do { | |
953 | ch = __read_char(); | |
954 | } while (isspace(ch)); | |
955 | if (ch == '"') | |
956 | goto concat; | |
957 | input_buf_ptr = save_input_buf_ptr; | |
958 | } | |
959 | ||
960 | goto out; | |
961 | ||
962 | case EVENT_ERROR ... EVENT_SPACE: | |
963 | case EVENT_ITEM: | |
964 | default: | |
965 | break; | |
966 | } | |
967 | ||
968 | while (get_type(__peek_char()) == type) { | |
969 | if (i == (BUFSIZ - 1)) { | |
970 | buf[i] = 0; | |
deba3fb2 | 971 | tok_size += BUFSIZ; |
f7d82350 | 972 | |
deba3fb2 | 973 | if (extend_token(tok, buf, tok_size) < 0) |
f7d82350 | 974 | return EVENT_NONE; |
f7d82350 SR |
975 | i = 0; |
976 | } | |
977 | ch = __read_char(); | |
978 | buf[i++] = ch; | |
979 | } | |
980 | ||
981 | out: | |
982 | buf[i] = 0; | |
deba3fb2 | 983 | if (extend_token(tok, buf, tok_size + i + 1) < 0) |
f7d82350 SR |
984 | return EVENT_NONE; |
985 | ||
986 | if (type == EVENT_ITEM) { | |
987 | /* | |
988 | * Older versions of the kernel has a bug that | |
989 | * creates invalid symbols and will break the mac80211 | |
990 | * parsing. This is a work around to that bug. | |
991 | * | |
992 | * See Linux kernel commit: | |
993 | * 811cb50baf63461ce0bdb234927046131fc7fa8b | |
994 | */ | |
995 | if (strcmp(*tok, "LOCAL_PR_FMT") == 0) { | |
996 | free(*tok); | |
997 | *tok = NULL; | |
998 | return force_token("\"\%s\" ", tok); | |
999 | } else if (strcmp(*tok, "STA_PR_FMT") == 0) { | |
1000 | free(*tok); | |
1001 | *tok = NULL; | |
1002 | return force_token("\" sta:%pM\" ", tok); | |
1003 | } else if (strcmp(*tok, "VIF_PR_FMT") == 0) { | |
1004 | free(*tok); | |
1005 | *tok = NULL; | |
1006 | return force_token("\" vif:%p(%d)\" ", tok); | |
1007 | } | |
1008 | } | |
1009 | ||
1010 | return type; | |
1011 | } | |
1012 | ||
1013 | static enum event_type force_token(const char *str, char **tok) | |
1014 | { | |
1015 | const char *save_input_buf; | |
1016 | unsigned long long save_input_buf_ptr; | |
1017 | unsigned long long save_input_buf_siz; | |
1018 | enum event_type type; | |
1019 | ||
1020 | /* save off the current input pointers */ | |
1021 | save_input_buf = input_buf; | |
1022 | save_input_buf_ptr = input_buf_ptr; | |
1023 | save_input_buf_siz = input_buf_siz; | |
1024 | ||
1025 | init_input_buf(str, strlen(str)); | |
1026 | ||
1027 | type = __read_token(tok); | |
1028 | ||
1029 | /* reset back to original token */ | |
1030 | input_buf = save_input_buf; | |
1031 | input_buf_ptr = save_input_buf_ptr; | |
1032 | input_buf_siz = save_input_buf_siz; | |
1033 | ||
1034 | return type; | |
1035 | } | |
1036 | ||
1037 | static void free_token(char *tok) | |
1038 | { | |
1039 | if (tok) | |
1040 | free(tok); | |
1041 | } | |
1042 | ||
1043 | static enum event_type read_token(char **tok) | |
1044 | { | |
1045 | enum event_type type; | |
1046 | ||
1047 | for (;;) { | |
1048 | type = __read_token(tok); | |
1049 | if (type != EVENT_SPACE) | |
1050 | return type; | |
1051 | ||
1052 | free_token(*tok); | |
1053 | } | |
1054 | ||
1055 | /* not reached */ | |
1056 | *tok = NULL; | |
1057 | return EVENT_NONE; | |
1058 | } | |
1059 | ||
1060 | /** | |
1061 | * pevent_read_token - access to utilites to use the pevent parser | |
1062 | * @tok: The token to return | |
1063 | * | |
1064 | * This will parse tokens from the string given by | |
1065 | * pevent_init_data(). | |
1066 | * | |
1067 | * Returns the token type. | |
1068 | */ | |
1069 | enum event_type pevent_read_token(char **tok) | |
1070 | { | |
1071 | return read_token(tok); | |
1072 | } | |
1073 | ||
1074 | /** | |
1075 | * pevent_free_token - free a token returned by pevent_read_token | |
1076 | * @token: the token to free | |
1077 | */ | |
1078 | void pevent_free_token(char *token) | |
1079 | { | |
1080 | free_token(token); | |
1081 | } | |
1082 | ||
1083 | /* no newline */ | |
1084 | static enum event_type read_token_item(char **tok) | |
1085 | { | |
1086 | enum event_type type; | |
1087 | ||
1088 | for (;;) { | |
1089 | type = __read_token(tok); | |
1090 | if (type != EVENT_SPACE && type != EVENT_NEWLINE) | |
1091 | return type; | |
1092 | free_token(*tok); | |
1093 | *tok = NULL; | |
1094 | } | |
1095 | ||
1096 | /* not reached */ | |
1097 | *tok = NULL; | |
1098 | return EVENT_NONE; | |
1099 | } | |
1100 | ||
1101 | static int test_type(enum event_type type, enum event_type expect) | |
1102 | { | |
1103 | if (type != expect) { | |
1104 | do_warning("Error: expected type %d but read %d", | |
1105 | expect, type); | |
1106 | return -1; | |
1107 | } | |
1108 | return 0; | |
1109 | } | |
1110 | ||
1111 | static int test_type_token(enum event_type type, const char *token, | |
1112 | enum event_type expect, const char *expect_tok) | |
1113 | { | |
1114 | if (type != expect) { | |
1115 | do_warning("Error: expected type %d but read %d", | |
1116 | expect, type); | |
1117 | return -1; | |
1118 | } | |
1119 | ||
1120 | if (strcmp(token, expect_tok) != 0) { | |
1121 | do_warning("Error: expected '%s' but read '%s'", | |
1122 | expect_tok, token); | |
1123 | return -1; | |
1124 | } | |
1125 | return 0; | |
1126 | } | |
1127 | ||
1128 | static int __read_expect_type(enum event_type expect, char **tok, int newline_ok) | |
1129 | { | |
1130 | enum event_type type; | |
1131 | ||
1132 | if (newline_ok) | |
1133 | type = read_token(tok); | |
1134 | else | |
1135 | type = read_token_item(tok); | |
1136 | return test_type(type, expect); | |
1137 | } | |
1138 | ||
1139 | static int read_expect_type(enum event_type expect, char **tok) | |
1140 | { | |
1141 | return __read_expect_type(expect, tok, 1); | |
1142 | } | |
1143 | ||
1144 | static int __read_expected(enum event_type expect, const char *str, | |
1145 | int newline_ok) | |
1146 | { | |
1147 | enum event_type type; | |
1148 | char *token; | |
1149 | int ret; | |
1150 | ||
1151 | if (newline_ok) | |
1152 | type = read_token(&token); | |
1153 | else | |
1154 | type = read_token_item(&token); | |
1155 | ||
1156 | ret = test_type_token(type, token, expect, str); | |
1157 | ||
1158 | free_token(token); | |
1159 | ||
1160 | return ret; | |
1161 | } | |
1162 | ||
1163 | static int read_expected(enum event_type expect, const char *str) | |
1164 | { | |
1165 | return __read_expected(expect, str, 1); | |
1166 | } | |
1167 | ||
1168 | static int read_expected_item(enum event_type expect, const char *str) | |
1169 | { | |
1170 | return __read_expected(expect, str, 0); | |
1171 | } | |
1172 | ||
1173 | static char *event_read_name(void) | |
1174 | { | |
1175 | char *token; | |
1176 | ||
1177 | if (read_expected(EVENT_ITEM, "name") < 0) | |
1178 | return NULL; | |
1179 | ||
1180 | if (read_expected(EVENT_OP, ":") < 0) | |
1181 | return NULL; | |
1182 | ||
1183 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
1184 | goto fail; | |
1185 | ||
1186 | return token; | |
1187 | ||
1188 | fail: | |
1189 | free_token(token); | |
1190 | return NULL; | |
1191 | } | |
1192 | ||
1193 | static int event_read_id(void) | |
1194 | { | |
1195 | char *token; | |
1196 | int id; | |
1197 | ||
1198 | if (read_expected_item(EVENT_ITEM, "ID") < 0) | |
1199 | return -1; | |
1200 | ||
1201 | if (read_expected(EVENT_OP, ":") < 0) | |
1202 | return -1; | |
1203 | ||
1204 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
1205 | goto fail; | |
1206 | ||
1207 | id = strtoul(token, NULL, 0); | |
1208 | free_token(token); | |
1209 | return id; | |
1210 | ||
1211 | fail: | |
1212 | free_token(token); | |
1213 | return -1; | |
1214 | } | |
1215 | ||
1216 | static int field_is_string(struct format_field *field) | |
1217 | { | |
1218 | if ((field->flags & FIELD_IS_ARRAY) && | |
1219 | (strstr(field->type, "char") || strstr(field->type, "u8") || | |
1220 | strstr(field->type, "s8"))) | |
1221 | return 1; | |
1222 | ||
1223 | return 0; | |
1224 | } | |
1225 | ||
1226 | static int field_is_dynamic(struct format_field *field) | |
1227 | { | |
1228 | if (strncmp(field->type, "__data_loc", 10) == 0) | |
1229 | return 1; | |
1230 | ||
1231 | return 0; | |
1232 | } | |
1233 | ||
1234 | static int field_is_long(struct format_field *field) | |
1235 | { | |
1236 | /* includes long long */ | |
1237 | if (strstr(field->type, "long")) | |
1238 | return 1; | |
1239 | ||
1240 | return 0; | |
1241 | } | |
1242 | ||
e23c1a55 JO |
1243 | static unsigned int type_size(const char *name) |
1244 | { | |
1245 | /* This covers all FIELD_IS_STRING types. */ | |
1246 | static struct { | |
1247 | const char *type; | |
1248 | unsigned int size; | |
1249 | } table[] = { | |
1250 | { "u8", 1 }, | |
1251 | { "u16", 2 }, | |
1252 | { "u32", 4 }, | |
1253 | { "u64", 8 }, | |
1254 | { "s8", 1 }, | |
1255 | { "s16", 2 }, | |
1256 | { "s32", 4 }, | |
1257 | { "s64", 8 }, | |
1258 | { "char", 1 }, | |
1259 | { }, | |
1260 | }; | |
1261 | int i; | |
1262 | ||
1263 | for (i = 0; table[i].type; i++) { | |
1264 | if (!strcmp(table[i].type, name)) | |
1265 | return table[i].size; | |
1266 | } | |
1267 | ||
1268 | return 0; | |
1269 | } | |
1270 | ||
f7d82350 SR |
1271 | static int event_read_fields(struct event_format *event, struct format_field **fields) |
1272 | { | |
1273 | struct format_field *field = NULL; | |
1274 | enum event_type type; | |
1275 | char *token; | |
1276 | char *last_token; | |
1277 | int count = 0; | |
1278 | ||
1279 | do { | |
e23c1a55 JO |
1280 | unsigned int size_dynamic = 0; |
1281 | ||
f7d82350 SR |
1282 | type = read_token(&token); |
1283 | if (type == EVENT_NEWLINE) { | |
1284 | free_token(token); | |
1285 | return count; | |
1286 | } | |
1287 | ||
1288 | count++; | |
1289 | ||
1290 | if (test_type_token(type, token, EVENT_ITEM, "field")) | |
1291 | goto fail; | |
1292 | free_token(token); | |
1293 | ||
1294 | type = read_token(&token); | |
1295 | /* | |
1296 | * The ftrace fields may still use the "special" name. | |
1297 | * Just ignore it. | |
1298 | */ | |
1299 | if (event->flags & EVENT_FL_ISFTRACE && | |
1300 | type == EVENT_ITEM && strcmp(token, "special") == 0) { | |
1301 | free_token(token); | |
1302 | type = read_token(&token); | |
1303 | } | |
1304 | ||
1305 | if (test_type_token(type, token, EVENT_OP, ":") < 0) | |
1306 | goto fail; | |
1307 | ||
1308 | free_token(token); | |
1309 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
1310 | goto fail; | |
1311 | ||
1312 | last_token = token; | |
1313 | ||
87162d81 ACM |
1314 | field = calloc(1, sizeof(*field)); |
1315 | if (!field) | |
1316 | goto fail; | |
1317 | ||
f7d82350 SR |
1318 | field->event = event; |
1319 | ||
1320 | /* read the rest of the type */ | |
1321 | for (;;) { | |
1322 | type = read_token(&token); | |
1323 | if (type == EVENT_ITEM || | |
1324 | (type == EVENT_OP && strcmp(token, "*") == 0) || | |
1325 | /* | |
1326 | * Some of the ftrace fields are broken and have | |
1327 | * an illegal "." in them. | |
1328 | */ | |
1329 | (event->flags & EVENT_FL_ISFTRACE && | |
1330 | type == EVENT_OP && strcmp(token, ".") == 0)) { | |
1331 | ||
1332 | if (strcmp(token, "*") == 0) | |
1333 | field->flags |= FIELD_IS_POINTER; | |
1334 | ||
1335 | if (field->type) { | |
d286447f NK |
1336 | char *new_type; |
1337 | new_type = realloc(field->type, | |
1338 | strlen(field->type) + | |
1339 | strlen(last_token) + 2); | |
1340 | if (!new_type) { | |
1341 | free(last_token); | |
1342 | goto fail; | |
1343 | } | |
1344 | field->type = new_type; | |
f7d82350 SR |
1345 | strcat(field->type, " "); |
1346 | strcat(field->type, last_token); | |
1347 | free(last_token); | |
1348 | } else | |
1349 | field->type = last_token; | |
1350 | last_token = token; | |
1351 | continue; | |
1352 | } | |
1353 | ||
1354 | break; | |
1355 | } | |
1356 | ||
1357 | if (!field->type) { | |
b8511920 | 1358 | do_warning("%s: no type found", __func__); |
f7d82350 SR |
1359 | goto fail; |
1360 | } | |
1361 | field->name = last_token; | |
1362 | ||
1363 | if (test_type(type, EVENT_OP)) | |
1364 | goto fail; | |
1365 | ||
1366 | if (strcmp(token, "[") == 0) { | |
1367 | enum event_type last_type = type; | |
1368 | char *brackets = token; | |
d286447f | 1369 | char *new_brackets; |
f7d82350 SR |
1370 | int len; |
1371 | ||
1372 | field->flags |= FIELD_IS_ARRAY; | |
1373 | ||
1374 | type = read_token(&token); | |
1375 | ||
1376 | if (type == EVENT_ITEM) | |
1377 | field->arraylen = strtoul(token, NULL, 0); | |
1378 | else | |
1379 | field->arraylen = 0; | |
1380 | ||
1381 | while (strcmp(token, "]") != 0) { | |
1382 | if (last_type == EVENT_ITEM && | |
1383 | type == EVENT_ITEM) | |
1384 | len = 2; | |
1385 | else | |
1386 | len = 1; | |
1387 | last_type = type; | |
1388 | ||
d286447f NK |
1389 | new_brackets = realloc(brackets, |
1390 | strlen(brackets) + | |
1391 | strlen(token) + len); | |
1392 | if (!new_brackets) { | |
1393 | free(brackets); | |
1394 | goto fail; | |
1395 | } | |
1396 | brackets = new_brackets; | |
f7d82350 SR |
1397 | if (len == 2) |
1398 | strcat(brackets, " "); | |
1399 | strcat(brackets, token); | |
1400 | /* We only care about the last token */ | |
1401 | field->arraylen = strtoul(token, NULL, 0); | |
1402 | free_token(token); | |
1403 | type = read_token(&token); | |
1404 | if (type == EVENT_NONE) { | |
b8511920 | 1405 | do_warning("failed to find token"); |
f7d82350 SR |
1406 | goto fail; |
1407 | } | |
1408 | } | |
1409 | ||
1410 | free_token(token); | |
1411 | ||
d286447f NK |
1412 | new_brackets = realloc(brackets, strlen(brackets) + 2); |
1413 | if (!new_brackets) { | |
1414 | free(brackets); | |
1415 | goto fail; | |
1416 | } | |
1417 | brackets = new_brackets; | |
f7d82350 SR |
1418 | strcat(brackets, "]"); |
1419 | ||
1420 | /* add brackets to type */ | |
1421 | ||
1422 | type = read_token(&token); | |
1423 | /* | |
1424 | * If the next token is not an OP, then it is of | |
1425 | * the format: type [] item; | |
1426 | */ | |
1427 | if (type == EVENT_ITEM) { | |
d286447f NK |
1428 | char *new_type; |
1429 | new_type = realloc(field->type, | |
1430 | strlen(field->type) + | |
1431 | strlen(field->name) + | |
1432 | strlen(brackets) + 2); | |
1433 | if (!new_type) { | |
1434 | free(brackets); | |
1435 | goto fail; | |
1436 | } | |
1437 | field->type = new_type; | |
f7d82350 SR |
1438 | strcat(field->type, " "); |
1439 | strcat(field->type, field->name); | |
e23c1a55 | 1440 | size_dynamic = type_size(field->name); |
f7d82350 SR |
1441 | free_token(field->name); |
1442 | strcat(field->type, brackets); | |
1443 | field->name = token; | |
1444 | type = read_token(&token); | |
1445 | } else { | |
d286447f NK |
1446 | char *new_type; |
1447 | new_type = realloc(field->type, | |
1448 | strlen(field->type) + | |
1449 | strlen(brackets) + 1); | |
1450 | if (!new_type) { | |
1451 | free(brackets); | |
1452 | goto fail; | |
1453 | } | |
1454 | field->type = new_type; | |
f7d82350 SR |
1455 | strcat(field->type, brackets); |
1456 | } | |
1457 | free(brackets); | |
1458 | } | |
1459 | ||
1460 | if (field_is_string(field)) | |
1461 | field->flags |= FIELD_IS_STRING; | |
1462 | if (field_is_dynamic(field)) | |
1463 | field->flags |= FIELD_IS_DYNAMIC; | |
1464 | if (field_is_long(field)) | |
1465 | field->flags |= FIELD_IS_LONG; | |
1466 | ||
1467 | if (test_type_token(type, token, EVENT_OP, ";")) | |
1468 | goto fail; | |
1469 | free_token(token); | |
1470 | ||
1471 | if (read_expected(EVENT_ITEM, "offset") < 0) | |
1472 | goto fail_expect; | |
1473 | ||
1474 | if (read_expected(EVENT_OP, ":") < 0) | |
1475 | goto fail_expect; | |
1476 | ||
1477 | if (read_expect_type(EVENT_ITEM, &token)) | |
1478 | goto fail; | |
1479 | field->offset = strtoul(token, NULL, 0); | |
1480 | free_token(token); | |
1481 | ||
1482 | if (read_expected(EVENT_OP, ";") < 0) | |
1483 | goto fail_expect; | |
1484 | ||
1485 | if (read_expected(EVENT_ITEM, "size") < 0) | |
1486 | goto fail_expect; | |
1487 | ||
1488 | if (read_expected(EVENT_OP, ":") < 0) | |
1489 | goto fail_expect; | |
1490 | ||
1491 | if (read_expect_type(EVENT_ITEM, &token)) | |
1492 | goto fail; | |
1493 | field->size = strtoul(token, NULL, 0); | |
1494 | free_token(token); | |
1495 | ||
1496 | if (read_expected(EVENT_OP, ";") < 0) | |
1497 | goto fail_expect; | |
1498 | ||
1499 | type = read_token(&token); | |
1500 | if (type != EVENT_NEWLINE) { | |
1501 | /* newer versions of the kernel have a "signed" type */ | |
1502 | if (test_type_token(type, token, EVENT_ITEM, "signed")) | |
1503 | goto fail; | |
1504 | ||
1505 | free_token(token); | |
1506 | ||
1507 | if (read_expected(EVENT_OP, ":") < 0) | |
1508 | goto fail_expect; | |
1509 | ||
1510 | if (read_expect_type(EVENT_ITEM, &token)) | |
1511 | goto fail; | |
1512 | ||
10ee9fa3 TZ |
1513 | if (strtoul(token, NULL, 0)) |
1514 | field->flags |= FIELD_IS_SIGNED; | |
f7d82350 SR |
1515 | |
1516 | free_token(token); | |
1517 | if (read_expected(EVENT_OP, ";") < 0) | |
1518 | goto fail_expect; | |
1519 | ||
1520 | if (read_expect_type(EVENT_NEWLINE, &token)) | |
1521 | goto fail; | |
1522 | } | |
1523 | ||
1524 | free_token(token); | |
1525 | ||
1526 | if (field->flags & FIELD_IS_ARRAY) { | |
1527 | if (field->arraylen) | |
1528 | field->elementsize = field->size / field->arraylen; | |
e23c1a55 JO |
1529 | else if (field->flags & FIELD_IS_DYNAMIC) |
1530 | field->elementsize = size_dynamic; | |
f7d82350 SR |
1531 | else if (field->flags & FIELD_IS_STRING) |
1532 | field->elementsize = 1; | |
e23c1a55 JO |
1533 | else if (field->flags & FIELD_IS_LONG) |
1534 | field->elementsize = event->pevent ? | |
1535 | event->pevent->long_size : | |
1536 | sizeof(long); | |
f7d82350 SR |
1537 | } else |
1538 | field->elementsize = field->size; | |
1539 | ||
1540 | *fields = field; | |
1541 | fields = &field->next; | |
1542 | ||
1543 | } while (1); | |
1544 | ||
1545 | return 0; | |
1546 | ||
1547 | fail: | |
1548 | free_token(token); | |
1549 | fail_expect: | |
57d34dc5 NK |
1550 | if (field) { |
1551 | free(field->type); | |
1552 | free(field->name); | |
f7d82350 | 1553 | free(field); |
57d34dc5 | 1554 | } |
f7d82350 SR |
1555 | return -1; |
1556 | } | |
1557 | ||
1558 | static int event_read_format(struct event_format *event) | |
1559 | { | |
1560 | char *token; | |
1561 | int ret; | |
1562 | ||
1563 | if (read_expected_item(EVENT_ITEM, "format") < 0) | |
1564 | return -1; | |
1565 | ||
1566 | if (read_expected(EVENT_OP, ":") < 0) | |
1567 | return -1; | |
1568 | ||
1569 | if (read_expect_type(EVENT_NEWLINE, &token)) | |
1570 | goto fail; | |
1571 | free_token(token); | |
1572 | ||
1573 | ret = event_read_fields(event, &event->format.common_fields); | |
1574 | if (ret < 0) | |
1575 | return ret; | |
1576 | event->format.nr_common = ret; | |
1577 | ||
1578 | ret = event_read_fields(event, &event->format.fields); | |
1579 | if (ret < 0) | |
1580 | return ret; | |
1581 | event->format.nr_fields = ret; | |
1582 | ||
1583 | return 0; | |
1584 | ||
1585 | fail: | |
1586 | free_token(token); | |
1587 | return -1; | |
1588 | } | |
1589 | ||
1590 | static enum event_type | |
1591 | process_arg_token(struct event_format *event, struct print_arg *arg, | |
1592 | char **tok, enum event_type type); | |
1593 | ||
1594 | static enum event_type | |
1595 | process_arg(struct event_format *event, struct print_arg *arg, char **tok) | |
1596 | { | |
1597 | enum event_type type; | |
1598 | char *token; | |
1599 | ||
1600 | type = read_token(&token); | |
1601 | *tok = token; | |
1602 | ||
1603 | return process_arg_token(event, arg, tok, type); | |
1604 | } | |
1605 | ||
1606 | static enum event_type | |
1607 | process_op(struct event_format *event, struct print_arg *arg, char **tok); | |
1608 | ||
eff2c92f SR |
1609 | /* |
1610 | * For __print_symbolic() and __print_flags, we need to completely | |
1611 | * evaluate the first argument, which defines what to print next. | |
1612 | */ | |
1613 | static enum event_type | |
1614 | process_field_arg(struct event_format *event, struct print_arg *arg, char **tok) | |
1615 | { | |
1616 | enum event_type type; | |
1617 | ||
1618 | type = process_arg(event, arg, tok); | |
1619 | ||
1620 | while (type == EVENT_OP) { | |
1621 | type = process_op(event, arg, tok); | |
1622 | } | |
1623 | ||
1624 | return type; | |
1625 | } | |
1626 | ||
f7d82350 SR |
1627 | static enum event_type |
1628 | process_cond(struct event_format *event, struct print_arg *top, char **tok) | |
1629 | { | |
1630 | struct print_arg *arg, *left, *right; | |
1631 | enum event_type type; | |
1632 | char *token = NULL; | |
1633 | ||
1634 | arg = alloc_arg(); | |
1635 | left = alloc_arg(); | |
1636 | right = alloc_arg(); | |
1637 | ||
b1ac754b NK |
1638 | if (!arg || !left || !right) { |
1639 | do_warning("%s: not enough memory!", __func__); | |
1640 | /* arg will be freed at out_free */ | |
1641 | free_arg(left); | |
1642 | free_arg(right); | |
1643 | goto out_free; | |
1644 | } | |
1645 | ||
f7d82350 SR |
1646 | arg->type = PRINT_OP; |
1647 | arg->op.left = left; | |
1648 | arg->op.right = right; | |
1649 | ||
1650 | *tok = NULL; | |
1651 | type = process_arg(event, left, &token); | |
1652 | ||
1653 | again: | |
1654 | /* Handle other operations in the arguments */ | |
1655 | if (type == EVENT_OP && strcmp(token, ":") != 0) { | |
1656 | type = process_op(event, left, &token); | |
1657 | goto again; | |
1658 | } | |
1659 | ||
1660 | if (test_type_token(type, token, EVENT_OP, ":")) | |
1661 | goto out_free; | |
1662 | ||
1663 | arg->op.op = token; | |
1664 | ||
1665 | type = process_arg(event, right, &token); | |
1666 | ||
1667 | top->op.right = arg; | |
1668 | ||
1669 | *tok = token; | |
1670 | return type; | |
1671 | ||
1672 | out_free: | |
1673 | /* Top may point to itself */ | |
1674 | top->op.right = NULL; | |
1675 | free_token(token); | |
1676 | free_arg(arg); | |
1677 | return EVENT_ERROR; | |
1678 | } | |
1679 | ||
1680 | static enum event_type | |
1681 | process_array(struct event_format *event, struct print_arg *top, char **tok) | |
1682 | { | |
1683 | struct print_arg *arg; | |
1684 | enum event_type type; | |
1685 | char *token = NULL; | |
1686 | ||
1687 | arg = alloc_arg(); | |
b1ac754b NK |
1688 | if (!arg) { |
1689 | do_warning("%s: not enough memory!", __func__); | |
1690 | /* '*tok' is set to top->op.op. No need to free. */ | |
1691 | *tok = NULL; | |
1692 | return EVENT_ERROR; | |
1693 | } | |
f7d82350 SR |
1694 | |
1695 | *tok = NULL; | |
1696 | type = process_arg(event, arg, &token); | |
1697 | if (test_type_token(type, token, EVENT_OP, "]")) | |
1698 | goto out_free; | |
1699 | ||
1700 | top->op.right = arg; | |
1701 | ||
1702 | free_token(token); | |
1703 | type = read_token_item(&token); | |
1704 | *tok = token; | |
1705 | ||
1706 | return type; | |
1707 | ||
1708 | out_free: | |
1bce6e0f | 1709 | free_token(token); |
f7d82350 SR |
1710 | free_arg(arg); |
1711 | return EVENT_ERROR; | |
1712 | } | |
1713 | ||
1714 | static int get_op_prio(char *op) | |
1715 | { | |
1716 | if (!op[1]) { | |
1717 | switch (op[0]) { | |
1718 | case '~': | |
1719 | case '!': | |
1720 | return 4; | |
1721 | case '*': | |
1722 | case '/': | |
1723 | case '%': | |
1724 | return 6; | |
1725 | case '+': | |
1726 | case '-': | |
1727 | return 7; | |
1728 | /* '>>' and '<<' are 8 */ | |
1729 | case '<': | |
1730 | case '>': | |
1731 | return 9; | |
1732 | /* '==' and '!=' are 10 */ | |
1733 | case '&': | |
1734 | return 11; | |
1735 | case '^': | |
1736 | return 12; | |
1737 | case '|': | |
1738 | return 13; | |
1739 | case '?': | |
1740 | return 16; | |
1741 | default: | |
14ffde0e | 1742 | do_warning("unknown op '%c'", op[0]); |
f7d82350 SR |
1743 | return -1; |
1744 | } | |
1745 | } else { | |
1746 | if (strcmp(op, "++") == 0 || | |
1747 | strcmp(op, "--") == 0) { | |
1748 | return 3; | |
1749 | } else if (strcmp(op, ">>") == 0 || | |
1750 | strcmp(op, "<<") == 0) { | |
1751 | return 8; | |
1752 | } else if (strcmp(op, ">=") == 0 || | |
1753 | strcmp(op, "<=") == 0) { | |
1754 | return 9; | |
1755 | } else if (strcmp(op, "==") == 0 || | |
1756 | strcmp(op, "!=") == 0) { | |
1757 | return 10; | |
1758 | } else if (strcmp(op, "&&") == 0) { | |
1759 | return 14; | |
1760 | } else if (strcmp(op, "||") == 0) { | |
1761 | return 15; | |
1762 | } else { | |
14ffde0e | 1763 | do_warning("unknown op '%s'", op); |
f7d82350 SR |
1764 | return -1; |
1765 | } | |
1766 | } | |
1767 | } | |
1768 | ||
14ffde0e | 1769 | static int set_op_prio(struct print_arg *arg) |
f7d82350 SR |
1770 | { |
1771 | ||
1772 | /* single ops are the greatest */ | |
14ffde0e | 1773 | if (!arg->op.left || arg->op.left->type == PRINT_NULL) |
f7d82350 | 1774 | arg->op.prio = 0; |
14ffde0e VN |
1775 | else |
1776 | arg->op.prio = get_op_prio(arg->op.op); | |
f7d82350 | 1777 | |
14ffde0e | 1778 | return arg->op.prio; |
f7d82350 SR |
1779 | } |
1780 | ||
1781 | /* Note, *tok does not get freed, but will most likely be saved */ | |
1782 | static enum event_type | |
1783 | process_op(struct event_format *event, struct print_arg *arg, char **tok) | |
1784 | { | |
1785 | struct print_arg *left, *right = NULL; | |
1786 | enum event_type type; | |
1787 | char *token; | |
1788 | ||
1789 | /* the op is passed in via tok */ | |
1790 | token = *tok; | |
1791 | ||
1792 | if (arg->type == PRINT_OP && !arg->op.left) { | |
1793 | /* handle single op */ | |
1794 | if (token[1]) { | |
b8511920 | 1795 | do_warning("bad op token %s", token); |
f7d82350 SR |
1796 | goto out_free; |
1797 | } | |
1798 | switch (token[0]) { | |
1799 | case '~': | |
1800 | case '!': | |
1801 | case '+': | |
1802 | case '-': | |
1803 | break; | |
1804 | default: | |
1805 | do_warning("bad op token %s", token); | |
1806 | goto out_free; | |
1807 | ||
1808 | } | |
1809 | ||
1810 | /* make an empty left */ | |
1811 | left = alloc_arg(); | |
b1ac754b NK |
1812 | if (!left) |
1813 | goto out_warn_free; | |
1814 | ||
f7d82350 SR |
1815 | left->type = PRINT_NULL; |
1816 | arg->op.left = left; | |
1817 | ||
1818 | right = alloc_arg(); | |
b1ac754b NK |
1819 | if (!right) |
1820 | goto out_warn_free; | |
1821 | ||
f7d82350 SR |
1822 | arg->op.right = right; |
1823 | ||
1824 | /* do not free the token, it belongs to an op */ | |
1825 | *tok = NULL; | |
1826 | type = process_arg(event, right, tok); | |
1827 | ||
1828 | } else if (strcmp(token, "?") == 0) { | |
1829 | ||
1830 | left = alloc_arg(); | |
b1ac754b NK |
1831 | if (!left) |
1832 | goto out_warn_free; | |
1833 | ||
f7d82350 SR |
1834 | /* copy the top arg to the left */ |
1835 | *left = *arg; | |
1836 | ||
1837 | arg->type = PRINT_OP; | |
1838 | arg->op.op = token; | |
1839 | arg->op.left = left; | |
1840 | arg->op.prio = 0; | |
1841 | ||
41e51a28 | 1842 | /* it will set arg->op.right */ |
f7d82350 SR |
1843 | type = process_cond(event, arg, tok); |
1844 | ||
1845 | } else if (strcmp(token, ">>") == 0 || | |
1846 | strcmp(token, "<<") == 0 || | |
1847 | strcmp(token, "&") == 0 || | |
1848 | strcmp(token, "|") == 0 || | |
1849 | strcmp(token, "&&") == 0 || | |
1850 | strcmp(token, "||") == 0 || | |
1851 | strcmp(token, "-") == 0 || | |
1852 | strcmp(token, "+") == 0 || | |
1853 | strcmp(token, "*") == 0 || | |
1854 | strcmp(token, "^") == 0 || | |
1855 | strcmp(token, "/") == 0 || | |
1856 | strcmp(token, "<") == 0 || | |
1857 | strcmp(token, ">") == 0 || | |
ff582680 NK |
1858 | strcmp(token, "<=") == 0 || |
1859 | strcmp(token, ">=") == 0 || | |
f7d82350 SR |
1860 | strcmp(token, "==") == 0 || |
1861 | strcmp(token, "!=") == 0) { | |
1862 | ||
1863 | left = alloc_arg(); | |
b1ac754b NK |
1864 | if (!left) |
1865 | goto out_warn_free; | |
f7d82350 SR |
1866 | |
1867 | /* copy the top arg to the left */ | |
1868 | *left = *arg; | |
1869 | ||
1870 | arg->type = PRINT_OP; | |
1871 | arg->op.op = token; | |
1872 | arg->op.left = left; | |
41e51a28 | 1873 | arg->op.right = NULL; |
f7d82350 | 1874 | |
14ffde0e VN |
1875 | if (set_op_prio(arg) == -1) { |
1876 | event->flags |= EVENT_FL_FAILED; | |
d1de1087 NK |
1877 | /* arg->op.op (= token) will be freed at out_free */ |
1878 | arg->op.op = NULL; | |
14ffde0e VN |
1879 | goto out_free; |
1880 | } | |
f7d82350 SR |
1881 | |
1882 | type = read_token_item(&token); | |
1883 | *tok = token; | |
1884 | ||
1885 | /* could just be a type pointer */ | |
1886 | if ((strcmp(arg->op.op, "*") == 0) && | |
1887 | type == EVENT_DELIM && (strcmp(token, ")") == 0)) { | |
d286447f NK |
1888 | char *new_atom; |
1889 | ||
a6d2a61a ACM |
1890 | if (left->type != PRINT_ATOM) { |
1891 | do_warning("bad pointer type"); | |
1892 | goto out_free; | |
1893 | } | |
d286447f | 1894 | new_atom = realloc(left->atom.atom, |
f7d82350 | 1895 | strlen(left->atom.atom) + 3); |
d286447f | 1896 | if (!new_atom) |
b1ac754b | 1897 | goto out_warn_free; |
d286447f NK |
1898 | |
1899 | left->atom.atom = new_atom; | |
f7d82350 SR |
1900 | strcat(left->atom.atom, " *"); |
1901 | free(arg->op.op); | |
1902 | *arg = *left; | |
1903 | free(left); | |
1904 | ||
1905 | return type; | |
1906 | } | |
1907 | ||
1908 | right = alloc_arg(); | |
b1ac754b NK |
1909 | if (!right) |
1910 | goto out_warn_free; | |
1911 | ||
f7d82350 SR |
1912 | type = process_arg_token(event, right, tok, type); |
1913 | arg->op.right = right; | |
1914 | ||
1915 | } else if (strcmp(token, "[") == 0) { | |
1916 | ||
1917 | left = alloc_arg(); | |
b1ac754b NK |
1918 | if (!left) |
1919 | goto out_warn_free; | |
1920 | ||
f7d82350 SR |
1921 | *left = *arg; |
1922 | ||
1923 | arg->type = PRINT_OP; | |
1924 | arg->op.op = token; | |
1925 | arg->op.left = left; | |
1926 | ||
1927 | arg->op.prio = 0; | |
1928 | ||
41e51a28 | 1929 | /* it will set arg->op.right */ |
f7d82350 SR |
1930 | type = process_array(event, arg, tok); |
1931 | ||
1932 | } else { | |
1933 | do_warning("unknown op '%s'", token); | |
1934 | event->flags |= EVENT_FL_FAILED; | |
1935 | /* the arg is now the left side */ | |
1936 | goto out_free; | |
1937 | } | |
1938 | ||
1939 | if (type == EVENT_OP && strcmp(*tok, ":") != 0) { | |
1940 | int prio; | |
1941 | ||
1942 | /* higher prios need to be closer to the root */ | |
1943 | prio = get_op_prio(*tok); | |
1944 | ||
1945 | if (prio > arg->op.prio) | |
1946 | return process_op(event, arg, tok); | |
1947 | ||
1948 | return process_op(event, right, tok); | |
1949 | } | |
1950 | ||
1951 | return type; | |
1952 | ||
b1ac754b NK |
1953 | out_warn_free: |
1954 | do_warning("%s: not enough memory!", __func__); | |
1955 | out_free: | |
f7d82350 SR |
1956 | free_token(token); |
1957 | *tok = NULL; | |
1958 | return EVENT_ERROR; | |
1959 | } | |
1960 | ||
1961 | static enum event_type | |
1d037ca1 | 1962 | process_entry(struct event_format *event __maybe_unused, struct print_arg *arg, |
f7d82350 SR |
1963 | char **tok) |
1964 | { | |
1965 | enum event_type type; | |
1966 | char *field; | |
1967 | char *token; | |
1968 | ||
1969 | if (read_expected(EVENT_OP, "->") < 0) | |
1970 | goto out_err; | |
1971 | ||
1972 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
1973 | goto out_free; | |
1974 | field = token; | |
1975 | ||
1976 | arg->type = PRINT_FIELD; | |
1977 | arg->field.name = field; | |
1978 | ||
5205aec9 TZ |
1979 | if (is_flag_field) { |
1980 | arg->field.field = pevent_find_any_field(event, arg->field.name); | |
1981 | arg->field.field->flags |= FIELD_IS_FLAG; | |
1982 | is_flag_field = 0; | |
1983 | } else if (is_symbolic_field) { | |
1984 | arg->field.field = pevent_find_any_field(event, arg->field.name); | |
1985 | arg->field.field->flags |= FIELD_IS_SYMBOLIC; | |
1986 | is_symbolic_field = 0; | |
1987 | } | |
1988 | ||
f7d82350 SR |
1989 | type = read_token(&token); |
1990 | *tok = token; | |
1991 | ||
1992 | return type; | |
1993 | ||
1994 | out_free: | |
1995 | free_token(token); | |
1996 | out_err: | |
1997 | *tok = NULL; | |
1998 | return EVENT_ERROR; | |
1999 | } | |
2000 | ||
2001 | static char *arg_eval (struct print_arg *arg); | |
2002 | ||
2003 | static unsigned long long | |
2004 | eval_type_str(unsigned long long val, const char *type, int pointer) | |
2005 | { | |
2006 | int sign = 0; | |
2007 | char *ref; | |
2008 | int len; | |
2009 | ||
2010 | len = strlen(type); | |
2011 | ||
2012 | if (pointer) { | |
2013 | ||
2014 | if (type[len-1] != '*') { | |
2015 | do_warning("pointer expected with non pointer type"); | |
2016 | return val; | |
2017 | } | |
2018 | ||
a6d2a61a ACM |
2019 | ref = malloc(len); |
2020 | if (!ref) { | |
2021 | do_warning("%s: not enough memory!", __func__); | |
2022 | return val; | |
2023 | } | |
f7d82350 SR |
2024 | memcpy(ref, type, len); |
2025 | ||
2026 | /* chop off the " *" */ | |
2027 | ref[len - 2] = 0; | |
2028 | ||
2029 | val = eval_type_str(val, ref, 0); | |
2030 | free(ref); | |
2031 | return val; | |
2032 | } | |
2033 | ||
2034 | /* check if this is a pointer */ | |
2035 | if (type[len - 1] == '*') | |
2036 | return val; | |
2037 | ||
2038 | /* Try to figure out the arg size*/ | |
2039 | if (strncmp(type, "struct", 6) == 0) | |
2040 | /* all bets off */ | |
2041 | return val; | |
2042 | ||
2043 | if (strcmp(type, "u8") == 0) | |
2044 | return val & 0xff; | |
2045 | ||
2046 | if (strcmp(type, "u16") == 0) | |
2047 | return val & 0xffff; | |
2048 | ||
2049 | if (strcmp(type, "u32") == 0) | |
2050 | return val & 0xffffffff; | |
2051 | ||
2052 | if (strcmp(type, "u64") == 0 || | |
2053 | strcmp(type, "s64")) | |
2054 | return val; | |
2055 | ||
2056 | if (strcmp(type, "s8") == 0) | |
2057 | return (unsigned long long)(char)val & 0xff; | |
2058 | ||
2059 | if (strcmp(type, "s16") == 0) | |
2060 | return (unsigned long long)(short)val & 0xffff; | |
2061 | ||
2062 | if (strcmp(type, "s32") == 0) | |
2063 | return (unsigned long long)(int)val & 0xffffffff; | |
2064 | ||
2065 | if (strncmp(type, "unsigned ", 9) == 0) { | |
2066 | sign = 0; | |
2067 | type += 9; | |
2068 | } | |
2069 | ||
2070 | if (strcmp(type, "char") == 0) { | |
2071 | if (sign) | |
2072 | return (unsigned long long)(char)val & 0xff; | |
2073 | else | |
2074 | return val & 0xff; | |
2075 | } | |
2076 | ||
2077 | if (strcmp(type, "short") == 0) { | |
2078 | if (sign) | |
2079 | return (unsigned long long)(short)val & 0xffff; | |
2080 | else | |
2081 | return val & 0xffff; | |
2082 | } | |
2083 | ||
2084 | if (strcmp(type, "int") == 0) { | |
2085 | if (sign) | |
2086 | return (unsigned long long)(int)val & 0xffffffff; | |
2087 | else | |
2088 | return val & 0xffffffff; | |
2089 | } | |
2090 | ||
2091 | return val; | |
2092 | } | |
2093 | ||
2094 | /* | |
2095 | * Try to figure out the type. | |
2096 | */ | |
2097 | static unsigned long long | |
2098 | eval_type(unsigned long long val, struct print_arg *arg, int pointer) | |
2099 | { | |
a6d2a61a ACM |
2100 | if (arg->type != PRINT_TYPE) { |
2101 | do_warning("expected type argument"); | |
2102 | return 0; | |
2103 | } | |
f7d82350 SR |
2104 | |
2105 | return eval_type_str(val, arg->typecast.type, pointer); | |
2106 | } | |
2107 | ||
d69afed5 | 2108 | static int arg_num_eval(struct print_arg *arg, long long *val) |
f7d82350 SR |
2109 | { |
2110 | long long left, right; | |
d69afed5 | 2111 | int ret = 1; |
f7d82350 SR |
2112 | |
2113 | switch (arg->type) { | |
2114 | case PRINT_ATOM: | |
d69afed5 | 2115 | *val = strtoll(arg->atom.atom, NULL, 0); |
f7d82350 SR |
2116 | break; |
2117 | case PRINT_TYPE: | |
d69afed5 VN |
2118 | ret = arg_num_eval(arg->typecast.item, val); |
2119 | if (!ret) | |
2120 | break; | |
2121 | *val = eval_type(*val, arg, 0); | |
f7d82350 SR |
2122 | break; |
2123 | case PRINT_OP: | |
2124 | switch (arg->op.op[0]) { | |
2125 | case '|': | |
d69afed5 VN |
2126 | ret = arg_num_eval(arg->op.left, &left); |
2127 | if (!ret) | |
2128 | break; | |
2129 | ret = arg_num_eval(arg->op.right, &right); | |
2130 | if (!ret) | |
2131 | break; | |
f7d82350 | 2132 | if (arg->op.op[1]) |
d69afed5 | 2133 | *val = left || right; |
f7d82350 | 2134 | else |
d69afed5 | 2135 | *val = left | right; |
f7d82350 SR |
2136 | break; |
2137 | case '&': | |
d69afed5 VN |
2138 | ret = arg_num_eval(arg->op.left, &left); |
2139 | if (!ret) | |
2140 | break; | |
2141 | ret = arg_num_eval(arg->op.right, &right); | |
2142 | if (!ret) | |
2143 | break; | |
f7d82350 | 2144 | if (arg->op.op[1]) |
d69afed5 | 2145 | *val = left && right; |
f7d82350 | 2146 | else |
d69afed5 | 2147 | *val = left & right; |
f7d82350 SR |
2148 | break; |
2149 | case '<': | |
d69afed5 VN |
2150 | ret = arg_num_eval(arg->op.left, &left); |
2151 | if (!ret) | |
2152 | break; | |
2153 | ret = arg_num_eval(arg->op.right, &right); | |
2154 | if (!ret) | |
2155 | break; | |
f7d82350 SR |
2156 | switch (arg->op.op[1]) { |
2157 | case 0: | |
d69afed5 | 2158 | *val = left < right; |
f7d82350 SR |
2159 | break; |
2160 | case '<': | |
d69afed5 | 2161 | *val = left << right; |
f7d82350 SR |
2162 | break; |
2163 | case '=': | |
d69afed5 | 2164 | *val = left <= right; |
f7d82350 SR |
2165 | break; |
2166 | default: | |
d69afed5 VN |
2167 | do_warning("unknown op '%s'", arg->op.op); |
2168 | ret = 0; | |
f7d82350 SR |
2169 | } |
2170 | break; | |
2171 | case '>': | |
d69afed5 VN |
2172 | ret = arg_num_eval(arg->op.left, &left); |
2173 | if (!ret) | |
2174 | break; | |
2175 | ret = arg_num_eval(arg->op.right, &right); | |
2176 | if (!ret) | |
2177 | break; | |
f7d82350 SR |
2178 | switch (arg->op.op[1]) { |
2179 | case 0: | |
d69afed5 | 2180 | *val = left > right; |
f7d82350 SR |
2181 | break; |
2182 | case '>': | |
d69afed5 | 2183 | *val = left >> right; |
f7d82350 SR |
2184 | break; |
2185 | case '=': | |
d69afed5 | 2186 | *val = left >= right; |
f7d82350 SR |
2187 | break; |
2188 | default: | |
d69afed5 VN |
2189 | do_warning("unknown op '%s'", arg->op.op); |
2190 | ret = 0; | |
f7d82350 SR |
2191 | } |
2192 | break; | |
2193 | case '=': | |
d69afed5 VN |
2194 | ret = arg_num_eval(arg->op.left, &left); |
2195 | if (!ret) | |
2196 | break; | |
2197 | ret = arg_num_eval(arg->op.right, &right); | |
2198 | if (!ret) | |
2199 | break; | |
f7d82350 | 2200 | |
d69afed5 VN |
2201 | if (arg->op.op[1] != '=') { |
2202 | do_warning("unknown op '%s'", arg->op.op); | |
2203 | ret = 0; | |
2204 | } else | |
2205 | *val = left == right; | |
f7d82350 SR |
2206 | break; |
2207 | case '!': | |
d69afed5 VN |
2208 | ret = arg_num_eval(arg->op.left, &left); |
2209 | if (!ret) | |
2210 | break; | |
2211 | ret = arg_num_eval(arg->op.right, &right); | |
2212 | if (!ret) | |
2213 | break; | |
f7d82350 SR |
2214 | |
2215 | switch (arg->op.op[1]) { | |
2216 | case '=': | |
d69afed5 | 2217 | *val = left != right; |
f7d82350 SR |
2218 | break; |
2219 | default: | |
d69afed5 VN |
2220 | do_warning("unknown op '%s'", arg->op.op); |
2221 | ret = 0; | |
f7d82350 SR |
2222 | } |
2223 | break; | |
2224 | case '-': | |
2225 | /* check for negative */ | |
2226 | if (arg->op.left->type == PRINT_NULL) | |
2227 | left = 0; | |
2228 | else | |
d69afed5 VN |
2229 | ret = arg_num_eval(arg->op.left, &left); |
2230 | if (!ret) | |
2231 | break; | |
2232 | ret = arg_num_eval(arg->op.right, &right); | |
2233 | if (!ret) | |
2234 | break; | |
2235 | *val = left - right; | |
f7d82350 | 2236 | break; |
b4828598 VN |
2237 | case '+': |
2238 | if (arg->op.left->type == PRINT_NULL) | |
2239 | left = 0; | |
2240 | else | |
2241 | ret = arg_num_eval(arg->op.left, &left); | |
2242 | if (!ret) | |
2243 | break; | |
2244 | ret = arg_num_eval(arg->op.right, &right); | |
2245 | if (!ret) | |
2246 | break; | |
2247 | *val = left + right; | |
2248 | break; | |
f7d82350 | 2249 | default: |
d69afed5 VN |
2250 | do_warning("unknown op '%s'", arg->op.op); |
2251 | ret = 0; | |
f7d82350 SR |
2252 | } |
2253 | break; | |
2254 | ||
2255 | case PRINT_NULL: | |
2256 | case PRINT_FIELD ... PRINT_SYMBOL: | |
2257 | case PRINT_STRING: | |
2258 | case PRINT_BSTRING: | |
2259 | default: | |
d69afed5 VN |
2260 | do_warning("invalid eval type %d", arg->type); |
2261 | ret = 0; | |
f7d82350 SR |
2262 | |
2263 | } | |
d69afed5 | 2264 | return ret; |
f7d82350 SR |
2265 | } |
2266 | ||
2267 | static char *arg_eval (struct print_arg *arg) | |
2268 | { | |
2269 | long long val; | |
2270 | static char buf[20]; | |
2271 | ||
2272 | switch (arg->type) { | |
2273 | case PRINT_ATOM: | |
2274 | return arg->atom.atom; | |
2275 | case PRINT_TYPE: | |
2276 | return arg_eval(arg->typecast.item); | |
2277 | case PRINT_OP: | |
d69afed5 VN |
2278 | if (!arg_num_eval(arg, &val)) |
2279 | break; | |
f7d82350 SR |
2280 | sprintf(buf, "%lld", val); |
2281 | return buf; | |
2282 | ||
2283 | case PRINT_NULL: | |
2284 | case PRINT_FIELD ... PRINT_SYMBOL: | |
2285 | case PRINT_STRING: | |
2286 | case PRINT_BSTRING: | |
2287 | default: | |
a6d2a61a | 2288 | do_warning("invalid eval type %d", arg->type); |
f7d82350 SR |
2289 | break; |
2290 | } | |
2291 | ||
2292 | return NULL; | |
2293 | } | |
2294 | ||
2295 | static enum event_type | |
2296 | process_fields(struct event_format *event, struct print_flag_sym **list, char **tok) | |
2297 | { | |
2298 | enum event_type type; | |
2299 | struct print_arg *arg = NULL; | |
2300 | struct print_flag_sym *field; | |
2301 | char *token = *tok; | |
2302 | char *value; | |
2303 | ||
2304 | do { | |
2305 | free_token(token); | |
2306 | type = read_token_item(&token); | |
2307 | if (test_type_token(type, token, EVENT_OP, "{")) | |
2308 | break; | |
2309 | ||
2310 | arg = alloc_arg(); | |
b1ac754b NK |
2311 | if (!arg) |
2312 | goto out_free; | |
f7d82350 SR |
2313 | |
2314 | free_token(token); | |
2315 | type = process_arg(event, arg, &token); | |
00b9da72 SH |
2316 | |
2317 | if (type == EVENT_OP) | |
2318 | type = process_op(event, arg, &token); | |
2319 | ||
2320 | if (type == EVENT_ERROR) | |
2321 | goto out_free; | |
2322 | ||
f7d82350 SR |
2323 | if (test_type_token(type, token, EVENT_DELIM, ",")) |
2324 | goto out_free; | |
2325 | ||
87162d81 ACM |
2326 | field = calloc(1, sizeof(*field)); |
2327 | if (!field) | |
2328 | goto out_free; | |
f7d82350 SR |
2329 | |
2330 | value = arg_eval(arg); | |
d69afed5 | 2331 | if (value == NULL) |
f8c49d26 | 2332 | goto out_free_field; |
f7d82350 | 2333 | field->value = strdup(value); |
ca63858e | 2334 | if (field->value == NULL) |
f8c49d26 | 2335 | goto out_free_field; |
f7d82350 SR |
2336 | |
2337 | free_arg(arg); | |
2338 | arg = alloc_arg(); | |
b1ac754b NK |
2339 | if (!arg) |
2340 | goto out_free; | |
f7d82350 SR |
2341 | |
2342 | free_token(token); | |
2343 | type = process_arg(event, arg, &token); | |
2344 | if (test_type_token(type, token, EVENT_OP, "}")) | |
f8c49d26 | 2345 | goto out_free_field; |
f7d82350 SR |
2346 | |
2347 | value = arg_eval(arg); | |
d69afed5 | 2348 | if (value == NULL) |
f8c49d26 | 2349 | goto out_free_field; |
f7d82350 | 2350 | field->str = strdup(value); |
ca63858e | 2351 | if (field->str == NULL) |
f8c49d26 | 2352 | goto out_free_field; |
f7d82350 SR |
2353 | free_arg(arg); |
2354 | arg = NULL; | |
2355 | ||
2356 | *list = field; | |
2357 | list = &field->next; | |
2358 | ||
2359 | free_token(token); | |
2360 | type = read_token_item(&token); | |
2361 | } while (type == EVENT_DELIM && strcmp(token, ",") == 0); | |
2362 | ||
2363 | *tok = token; | |
2364 | return type; | |
2365 | ||
f8c49d26 NK |
2366 | out_free_field: |
2367 | free_flag_sym(field); | |
f7d82350 SR |
2368 | out_free: |
2369 | free_arg(arg); | |
2370 | free_token(token); | |
2371 | *tok = NULL; | |
2372 | ||
2373 | return EVENT_ERROR; | |
2374 | } | |
2375 | ||
2376 | static enum event_type | |
2377 | process_flags(struct event_format *event, struct print_arg *arg, char **tok) | |
2378 | { | |
2379 | struct print_arg *field; | |
2380 | enum event_type type; | |
2381 | char *token; | |
2382 | ||
2383 | memset(arg, 0, sizeof(*arg)); | |
2384 | arg->type = PRINT_FLAGS; | |
2385 | ||
2386 | field = alloc_arg(); | |
b1ac754b NK |
2387 | if (!field) { |
2388 | do_warning("%s: not enough memory!", __func__); | |
2389 | goto out_free; | |
2390 | } | |
f7d82350 | 2391 | |
eff2c92f | 2392 | type = process_field_arg(event, field, &token); |
f7d82350 SR |
2393 | |
2394 | /* Handle operations in the first argument */ | |
2395 | while (type == EVENT_OP) | |
2396 | type = process_op(event, field, &token); | |
2397 | ||
2398 | if (test_type_token(type, token, EVENT_DELIM, ",")) | |
70d93044 | 2399 | goto out_free_field; |
f7d82350 SR |
2400 | free_token(token); |
2401 | ||
2402 | arg->flags.field = field; | |
2403 | ||
2404 | type = read_token_item(&token); | |
2405 | if (event_item_type(type)) { | |
2406 | arg->flags.delim = token; | |
2407 | type = read_token_item(&token); | |
2408 | } | |
2409 | ||
2410 | if (test_type_token(type, token, EVENT_DELIM, ",")) | |
2411 | goto out_free; | |
2412 | ||
2413 | type = process_fields(event, &arg->flags.flags, &token); | |
2414 | if (test_type_token(type, token, EVENT_DELIM, ")")) | |
2415 | goto out_free; | |
2416 | ||
2417 | free_token(token); | |
2418 | type = read_token_item(tok); | |
2419 | return type; | |
2420 | ||
70d93044 NK |
2421 | out_free_field: |
2422 | free_arg(field); | |
2423 | out_free: | |
f7d82350 SR |
2424 | free_token(token); |
2425 | *tok = NULL; | |
2426 | return EVENT_ERROR; | |
2427 | } | |
2428 | ||
2429 | static enum event_type | |
2430 | process_symbols(struct event_format *event, struct print_arg *arg, char **tok) | |
2431 | { | |
2432 | struct print_arg *field; | |
2433 | enum event_type type; | |
2434 | char *token; | |
2435 | ||
2436 | memset(arg, 0, sizeof(*arg)); | |
2437 | arg->type = PRINT_SYMBOL; | |
2438 | ||
2439 | field = alloc_arg(); | |
b1ac754b NK |
2440 | if (!field) { |
2441 | do_warning("%s: not enough memory!", __func__); | |
2442 | goto out_free; | |
2443 | } | |
f7d82350 | 2444 | |
eff2c92f SR |
2445 | type = process_field_arg(event, field, &token); |
2446 | ||
f7d82350 | 2447 | if (test_type_token(type, token, EVENT_DELIM, ",")) |
70d93044 | 2448 | goto out_free_field; |
f7d82350 SR |
2449 | |
2450 | arg->symbol.field = field; | |
2451 | ||
2452 | type = process_fields(event, &arg->symbol.symbols, &token); | |
2453 | if (test_type_token(type, token, EVENT_DELIM, ")")) | |
2454 | goto out_free; | |
2455 | ||
2456 | free_token(token); | |
2457 | type = read_token_item(tok); | |
2458 | return type; | |
2459 | ||
70d93044 NK |
2460 | out_free_field: |
2461 | free_arg(field); | |
2462 | out_free: | |
f7d82350 SR |
2463 | free_token(token); |
2464 | *tok = NULL; | |
2465 | return EVENT_ERROR; | |
2466 | } | |
2467 | ||
e080e6f1 NK |
2468 | static enum event_type |
2469 | process_hex(struct event_format *event, struct print_arg *arg, char **tok) | |
2470 | { | |
2471 | struct print_arg *field; | |
2472 | enum event_type type; | |
2473 | char *token; | |
2474 | ||
2475 | memset(arg, 0, sizeof(*arg)); | |
2476 | arg->type = PRINT_HEX; | |
2477 | ||
2478 | field = alloc_arg(); | |
b1ac754b NK |
2479 | if (!field) { |
2480 | do_warning("%s: not enough memory!", __func__); | |
2481 | goto out_free; | |
2482 | } | |
2483 | ||
e080e6f1 NK |
2484 | type = process_arg(event, field, &token); |
2485 | ||
2486 | if (test_type_token(type, token, EVENT_DELIM, ",")) | |
2487 | goto out_free; | |
2488 | ||
2489 | arg->hex.field = field; | |
2490 | ||
2491 | free_token(token); | |
2492 | ||
2493 | field = alloc_arg(); | |
b1ac754b NK |
2494 | if (!field) { |
2495 | do_warning("%s: not enough memory!", __func__); | |
2496 | *tok = NULL; | |
2497 | return EVENT_ERROR; | |
2498 | } | |
2499 | ||
e080e6f1 NK |
2500 | type = process_arg(event, field, &token); |
2501 | ||
2502 | if (test_type_token(type, token, EVENT_DELIM, ")")) | |
2503 | goto out_free; | |
2504 | ||
2505 | arg->hex.size = field; | |
2506 | ||
2507 | free_token(token); | |
2508 | type = read_token_item(tok); | |
2509 | return type; | |
2510 | ||
2511 | out_free: | |
2512 | free_arg(field); | |
2513 | free_token(token); | |
2514 | *tok = NULL; | |
2515 | return EVENT_ERROR; | |
2516 | } | |
2517 | ||
f7d82350 SR |
2518 | static enum event_type |
2519 | process_dynamic_array(struct event_format *event, struct print_arg *arg, char **tok) | |
2520 | { | |
2521 | struct format_field *field; | |
2522 | enum event_type type; | |
2523 | char *token; | |
2524 | ||
2525 | memset(arg, 0, sizeof(*arg)); | |
2526 | arg->type = PRINT_DYNAMIC_ARRAY; | |
2527 | ||
2528 | /* | |
2529 | * The item within the parenthesis is another field that holds | |
2530 | * the index into where the array starts. | |
2531 | */ | |
2532 | type = read_token(&token); | |
2533 | *tok = token; | |
2534 | if (type != EVENT_ITEM) | |
2535 | goto out_free; | |
2536 | ||
2537 | /* Find the field */ | |
2538 | ||
2539 | field = pevent_find_field(event, token); | |
2540 | if (!field) | |
2541 | goto out_free; | |
2542 | ||
2543 | arg->dynarray.field = field; | |
2544 | arg->dynarray.index = 0; | |
2545 | ||
2546 | if (read_expected(EVENT_DELIM, ")") < 0) | |
2547 | goto out_free; | |
2548 | ||
2549 | free_token(token); | |
2550 | type = read_token_item(&token); | |
2551 | *tok = token; | |
2552 | if (type != EVENT_OP || strcmp(token, "[") != 0) | |
2553 | return type; | |
2554 | ||
2555 | free_token(token); | |
2556 | arg = alloc_arg(); | |
fba7a782 | 2557 | if (!arg) { |
b1ac754b NK |
2558 | do_warning("%s: not enough memory!", __func__); |
2559 | *tok = NULL; | |
2560 | return EVENT_ERROR; | |
2561 | } | |
2562 | ||
f7d82350 SR |
2563 | type = process_arg(event, arg, &token); |
2564 | if (type == EVENT_ERROR) | |
b3511d05 | 2565 | goto out_free_arg; |
f7d82350 SR |
2566 | |
2567 | if (!test_type_token(type, token, EVENT_OP, "]")) | |
b3511d05 | 2568 | goto out_free_arg; |
f7d82350 SR |
2569 | |
2570 | free_token(token); | |
2571 | type = read_token_item(tok); | |
2572 | return type; | |
2573 | ||
b3511d05 NK |
2574 | out_free_arg: |
2575 | free_arg(arg); | |
f7d82350 | 2576 | out_free: |
f7d82350 SR |
2577 | free_token(token); |
2578 | *tok = NULL; | |
2579 | return EVENT_ERROR; | |
2580 | } | |
2581 | ||
2582 | static enum event_type | |
2583 | process_paren(struct event_format *event, struct print_arg *arg, char **tok) | |
2584 | { | |
2585 | struct print_arg *item_arg; | |
2586 | enum event_type type; | |
2587 | char *token; | |
2588 | ||
2589 | type = process_arg(event, arg, &token); | |
2590 | ||
2591 | if (type == EVENT_ERROR) | |
2592 | goto out_free; | |
2593 | ||
2594 | if (type == EVENT_OP) | |
2595 | type = process_op(event, arg, &token); | |
2596 | ||
2597 | if (type == EVENT_ERROR) | |
2598 | goto out_free; | |
2599 | ||
2600 | if (test_type_token(type, token, EVENT_DELIM, ")")) | |
2601 | goto out_free; | |
2602 | ||
2603 | free_token(token); | |
2604 | type = read_token_item(&token); | |
2605 | ||
2606 | /* | |
2607 | * If the next token is an item or another open paren, then | |
2608 | * this was a typecast. | |
2609 | */ | |
2610 | if (event_item_type(type) || | |
2611 | (type == EVENT_DELIM && strcmp(token, "(") == 0)) { | |
2612 | ||
2613 | /* make this a typecast and contine */ | |
2614 | ||
2615 | /* prevous must be an atom */ | |
a6d2a61a ACM |
2616 | if (arg->type != PRINT_ATOM) { |
2617 | do_warning("previous needed to be PRINT_ATOM"); | |
2618 | goto out_free; | |
2619 | } | |
f7d82350 SR |
2620 | |
2621 | item_arg = alloc_arg(); | |
b1ac754b NK |
2622 | if (!item_arg) { |
2623 | do_warning("%s: not enough memory!", __func__); | |
2624 | goto out_free; | |
2625 | } | |
f7d82350 SR |
2626 | |
2627 | arg->type = PRINT_TYPE; | |
2628 | arg->typecast.type = arg->atom.atom; | |
2629 | arg->typecast.item = item_arg; | |
2630 | type = process_arg_token(event, item_arg, &token, type); | |
2631 | ||
2632 | } | |
2633 | ||
2634 | *tok = token; | |
2635 | return type; | |
2636 | ||
2637 | out_free: | |
2638 | free_token(token); | |
2639 | *tok = NULL; | |
2640 | return EVENT_ERROR; | |
2641 | } | |
2642 | ||
2643 | ||
2644 | static enum event_type | |
1d037ca1 IT |
2645 | process_str(struct event_format *event __maybe_unused, struct print_arg *arg, |
2646 | char **tok) | |
f7d82350 SR |
2647 | { |
2648 | enum event_type type; | |
2649 | char *token; | |
2650 | ||
2651 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
2652 | goto out_free; | |
2653 | ||
2654 | arg->type = PRINT_STRING; | |
2655 | arg->string.string = token; | |
2656 | arg->string.offset = -1; | |
2657 | ||
2658 | if (read_expected(EVENT_DELIM, ")") < 0) | |
2659 | goto out_err; | |
2660 | ||
2661 | type = read_token(&token); | |
2662 | *tok = token; | |
2663 | ||
2664 | return type; | |
2665 | ||
2666 | out_free: | |
2667 | free_token(token); | |
2668 | out_err: | |
2669 | *tok = NULL; | |
2670 | return EVENT_ERROR; | |
2671 | } | |
2672 | ||
2673 | static struct pevent_function_handler * | |
2674 | find_func_handler(struct pevent *pevent, char *func_name) | |
2675 | { | |
2676 | struct pevent_function_handler *func; | |
2677 | ||
101782ea SR |
2678 | if (!pevent) |
2679 | return NULL; | |
2680 | ||
f7d82350 SR |
2681 | for (func = pevent->func_handlers; func; func = func->next) { |
2682 | if (strcmp(func->name, func_name) == 0) | |
2683 | break; | |
2684 | } | |
2685 | ||
2686 | return func; | |
2687 | } | |
2688 | ||
2689 | static void remove_func_handler(struct pevent *pevent, char *func_name) | |
2690 | { | |
2691 | struct pevent_function_handler *func; | |
2692 | struct pevent_function_handler **next; | |
2693 | ||
2694 | next = &pevent->func_handlers; | |
2695 | while ((func = *next)) { | |
2696 | if (strcmp(func->name, func_name) == 0) { | |
2697 | *next = func->next; | |
2698 | free_func_handle(func); | |
2699 | break; | |
2700 | } | |
2701 | next = &func->next; | |
2702 | } | |
2703 | } | |
2704 | ||
2705 | static enum event_type | |
2706 | process_func_handler(struct event_format *event, struct pevent_function_handler *func, | |
2707 | struct print_arg *arg, char **tok) | |
2708 | { | |
2709 | struct print_arg **next_arg; | |
2710 | struct print_arg *farg; | |
2711 | enum event_type type; | |
2712 | char *token; | |
f7d82350 SR |
2713 | int i; |
2714 | ||
2715 | arg->type = PRINT_FUNC; | |
2716 | arg->func.func = func; | |
2717 | ||
2718 | *tok = NULL; | |
2719 | ||
2720 | next_arg = &(arg->func.args); | |
2721 | for (i = 0; i < func->nr_args; i++) { | |
2722 | farg = alloc_arg(); | |
b1ac754b NK |
2723 | if (!farg) { |
2724 | do_warning("%s: not enough memory!", __func__); | |
2725 | return EVENT_ERROR; | |
2726 | } | |
2727 | ||
f7d82350 | 2728 | type = process_arg(event, farg, &token); |
3a3ffa2e SR |
2729 | if (i < (func->nr_args - 1)) { |
2730 | if (type != EVENT_DELIM || strcmp(token, ",") != 0) { | |
2731 | warning("Error: function '%s()' expects %d arguments but event %s only uses %d", | |
2732 | func->name, func->nr_args, | |
2733 | event->name, i + 1); | |
2734 | goto err; | |
2735 | } | |
2736 | } else { | |
2737 | if (type != EVENT_DELIM || strcmp(token, ")") != 0) { | |
2738 | warning("Error: function '%s()' only expects %d arguments but event %s has more", | |
2739 | func->name, func->nr_args, event->name); | |
2740 | goto err; | |
2741 | } | |
f7d82350 SR |
2742 | } |
2743 | ||
2744 | *next_arg = farg; | |
2745 | next_arg = &(farg->next); | |
2746 | free_token(token); | |
2747 | } | |
2748 | ||
2749 | type = read_token(&token); | |
2750 | *tok = token; | |
2751 | ||
2752 | return type; | |
3a3ffa2e SR |
2753 | |
2754 | err: | |
2755 | free_arg(farg); | |
2756 | free_token(token); | |
2757 | return EVENT_ERROR; | |
f7d82350 SR |
2758 | } |
2759 | ||
2760 | static enum event_type | |
2761 | process_function(struct event_format *event, struct print_arg *arg, | |
2762 | char *token, char **tok) | |
2763 | { | |
2764 | struct pevent_function_handler *func; | |
2765 | ||
2766 | if (strcmp(token, "__print_flags") == 0) { | |
2767 | free_token(token); | |
5205aec9 | 2768 | is_flag_field = 1; |
f7d82350 SR |
2769 | return process_flags(event, arg, tok); |
2770 | } | |
2771 | if (strcmp(token, "__print_symbolic") == 0) { | |
2772 | free_token(token); | |
5205aec9 | 2773 | is_symbolic_field = 1; |
f7d82350 SR |
2774 | return process_symbols(event, arg, tok); |
2775 | } | |
e080e6f1 NK |
2776 | if (strcmp(token, "__print_hex") == 0) { |
2777 | free_token(token); | |
2778 | return process_hex(event, arg, tok); | |
2779 | } | |
f7d82350 SR |
2780 | if (strcmp(token, "__get_str") == 0) { |
2781 | free_token(token); | |
2782 | return process_str(event, arg, tok); | |
2783 | } | |
2784 | if (strcmp(token, "__get_dynamic_array") == 0) { | |
2785 | free_token(token); | |
2786 | return process_dynamic_array(event, arg, tok); | |
2787 | } | |
2788 | ||
2789 | func = find_func_handler(event->pevent, token); | |
2790 | if (func) { | |
2791 | free_token(token); | |
2792 | return process_func_handler(event, func, arg, tok); | |
2793 | } | |
2794 | ||
2795 | do_warning("function %s not defined", token); | |
2796 | free_token(token); | |
2797 | return EVENT_ERROR; | |
2798 | } | |
2799 | ||
2800 | static enum event_type | |
2801 | process_arg_token(struct event_format *event, struct print_arg *arg, | |
2802 | char **tok, enum event_type type) | |
2803 | { | |
2804 | char *token; | |
2805 | char *atom; | |
2806 | ||
2807 | token = *tok; | |
2808 | ||
2809 | switch (type) { | |
2810 | case EVENT_ITEM: | |
2811 | if (strcmp(token, "REC") == 0) { | |
2812 | free_token(token); | |
2813 | type = process_entry(event, arg, &token); | |
2814 | break; | |
2815 | } | |
2816 | atom = token; | |
2817 | /* test the next token */ | |
2818 | type = read_token_item(&token); | |
2819 | ||
2820 | /* | |
2821 | * If the next token is a parenthesis, then this | |
2822 | * is a function. | |
2823 | */ | |
2824 | if (type == EVENT_DELIM && strcmp(token, "(") == 0) { | |
2825 | free_token(token); | |
2826 | token = NULL; | |
2827 | /* this will free atom. */ | |
2828 | type = process_function(event, arg, atom, &token); | |
2829 | break; | |
2830 | } | |
2831 | /* atoms can be more than one token long */ | |
2832 | while (type == EVENT_ITEM) { | |
d286447f NK |
2833 | char *new_atom; |
2834 | new_atom = realloc(atom, | |
2835 | strlen(atom) + strlen(token) + 2); | |
2836 | if (!new_atom) { | |
2837 | free(atom); | |
2838 | *tok = NULL; | |
2839 | free_token(token); | |
2840 | return EVENT_ERROR; | |
2841 | } | |
2842 | atom = new_atom; | |
f7d82350 SR |
2843 | strcat(atom, " "); |
2844 | strcat(atom, token); | |
2845 | free_token(token); | |
2846 | type = read_token_item(&token); | |
2847 | } | |
2848 | ||
2849 | arg->type = PRINT_ATOM; | |
2850 | arg->atom.atom = atom; | |
2851 | break; | |
2852 | ||
2853 | case EVENT_DQUOTE: | |
2854 | case EVENT_SQUOTE: | |
2855 | arg->type = PRINT_ATOM; | |
2856 | arg->atom.atom = token; | |
2857 | type = read_token_item(&token); | |
2858 | break; | |
2859 | case EVENT_DELIM: | |
2860 | if (strcmp(token, "(") == 0) { | |
2861 | free_token(token); | |
2862 | type = process_paren(event, arg, &token); | |
2863 | break; | |
2864 | } | |
2865 | case EVENT_OP: | |
2866 | /* handle single ops */ | |
2867 | arg->type = PRINT_OP; | |
2868 | arg->op.op = token; | |
2869 | arg->op.left = NULL; | |
2870 | type = process_op(event, arg, &token); | |
2871 | ||
2872 | /* On error, the op is freed */ | |
2873 | if (type == EVENT_ERROR) | |
2874 | arg->op.op = NULL; | |
2875 | ||
2876 | /* return error type if errored */ | |
2877 | break; | |
2878 | ||
2879 | case EVENT_ERROR ... EVENT_NEWLINE: | |
2880 | default: | |
a6d2a61a ACM |
2881 | do_warning("unexpected type %d", type); |
2882 | return EVENT_ERROR; | |
f7d82350 SR |
2883 | } |
2884 | *tok = token; | |
2885 | ||
2886 | return type; | |
2887 | } | |
2888 | ||
2889 | static int event_read_print_args(struct event_format *event, struct print_arg **list) | |
2890 | { | |
2891 | enum event_type type = EVENT_ERROR; | |
2892 | struct print_arg *arg; | |
2893 | char *token; | |
2894 | int args = 0; | |
2895 | ||
2896 | do { | |
2897 | if (type == EVENT_NEWLINE) { | |
2898 | type = read_token_item(&token); | |
2899 | continue; | |
2900 | } | |
2901 | ||
2902 | arg = alloc_arg(); | |
b1ac754b NK |
2903 | if (!arg) { |
2904 | do_warning("%s: not enough memory!", __func__); | |
2905 | return -1; | |
2906 | } | |
f7d82350 SR |
2907 | |
2908 | type = process_arg(event, arg, &token); | |
2909 | ||
2910 | if (type == EVENT_ERROR) { | |
2911 | free_token(token); | |
2912 | free_arg(arg); | |
2913 | return -1; | |
2914 | } | |
2915 | ||
2916 | *list = arg; | |
2917 | args++; | |
2918 | ||
2919 | if (type == EVENT_OP) { | |
2920 | type = process_op(event, arg, &token); | |
2921 | free_token(token); | |
2922 | if (type == EVENT_ERROR) { | |
2923 | *list = NULL; | |
2924 | free_arg(arg); | |
2925 | return -1; | |
2926 | } | |
2927 | list = &arg->next; | |
2928 | continue; | |
2929 | } | |
2930 | ||
2931 | if (type == EVENT_DELIM && strcmp(token, ",") == 0) { | |
2932 | free_token(token); | |
2933 | *list = arg; | |
2934 | list = &arg->next; | |
2935 | continue; | |
2936 | } | |
2937 | break; | |
2938 | } while (type != EVENT_NONE); | |
2939 | ||
2940 | if (type != EVENT_NONE && type != EVENT_ERROR) | |
2941 | free_token(token); | |
2942 | ||
2943 | return args; | |
2944 | } | |
2945 | ||
2946 | static int event_read_print(struct event_format *event) | |
2947 | { | |
2948 | enum event_type type; | |
2949 | char *token; | |
2950 | int ret; | |
2951 | ||
2952 | if (read_expected_item(EVENT_ITEM, "print") < 0) | |
2953 | return -1; | |
2954 | ||
2955 | if (read_expected(EVENT_ITEM, "fmt") < 0) | |
2956 | return -1; | |
2957 | ||
2958 | if (read_expected(EVENT_OP, ":") < 0) | |
2959 | return -1; | |
2960 | ||
2961 | if (read_expect_type(EVENT_DQUOTE, &token) < 0) | |
2962 | goto fail; | |
2963 | ||
2964 | concat: | |
2965 | event->print_fmt.format = token; | |
2966 | event->print_fmt.args = NULL; | |
2967 | ||
2968 | /* ok to have no arg */ | |
2969 | type = read_token_item(&token); | |
2970 | ||
2971 | if (type == EVENT_NONE) | |
2972 | return 0; | |
2973 | ||
2974 | /* Handle concatenation of print lines */ | |
2975 | if (type == EVENT_DQUOTE) { | |
2976 | char *cat; | |
2977 | ||
0dbca1e3 ACM |
2978 | if (asprintf(&cat, "%s%s", event->print_fmt.format, token) < 0) |
2979 | goto fail; | |
f7d82350 SR |
2980 | free_token(token); |
2981 | free_token(event->print_fmt.format); | |
2982 | event->print_fmt.format = NULL; | |
2983 | token = cat; | |
2984 | goto concat; | |
2985 | } | |
2986 | ||
2987 | if (test_type_token(type, token, EVENT_DELIM, ",")) | |
2988 | goto fail; | |
2989 | ||
2990 | free_token(token); | |
2991 | ||
2992 | ret = event_read_print_args(event, &event->print_fmt.args); | |
2993 | if (ret < 0) | |
2994 | return -1; | |
2995 | ||
2996 | return ret; | |
2997 | ||
2998 | fail: | |
2999 | free_token(token); | |
3000 | return -1; | |
3001 | } | |
3002 | ||
3003 | /** | |
3004 | * pevent_find_common_field - return a common field by event | |
3005 | * @event: handle for the event | |
3006 | * @name: the name of the common field to return | |
3007 | * | |
3008 | * Returns a common field from the event by the given @name. | |
3009 | * This only searchs the common fields and not all field. | |
3010 | */ | |
3011 | struct format_field * | |
3012 | pevent_find_common_field(struct event_format *event, const char *name) | |
3013 | { | |
3014 | struct format_field *format; | |
3015 | ||
3016 | for (format = event->format.common_fields; | |
3017 | format; format = format->next) { | |
3018 | if (strcmp(format->name, name) == 0) | |
3019 | break; | |
3020 | } | |
3021 | ||
3022 | return format; | |
3023 | } | |
3024 | ||
3025 | /** | |
3026 | * pevent_find_field - find a non-common field | |
3027 | * @event: handle for the event | |
3028 | * @name: the name of the non-common field | |
3029 | * | |
3030 | * Returns a non-common field by the given @name. | |
3031 | * This does not search common fields. | |
3032 | */ | |
3033 | struct format_field * | |
3034 | pevent_find_field(struct event_format *event, const char *name) | |
3035 | { | |
3036 | struct format_field *format; | |
3037 | ||
3038 | for (format = event->format.fields; | |
3039 | format; format = format->next) { | |
3040 | if (strcmp(format->name, name) == 0) | |
3041 | break; | |
3042 | } | |
3043 | ||
3044 | return format; | |
3045 | } | |
3046 | ||
3047 | /** | |
3048 | * pevent_find_any_field - find any field by name | |
3049 | * @event: handle for the event | |
3050 | * @name: the name of the field | |
3051 | * | |
3052 | * Returns a field by the given @name. | |
3053 | * This searchs the common field names first, then | |
3054 | * the non-common ones if a common one was not found. | |
3055 | */ | |
3056 | struct format_field * | |
3057 | pevent_find_any_field(struct event_format *event, const char *name) | |
3058 | { | |
3059 | struct format_field *format; | |
3060 | ||
3061 | format = pevent_find_common_field(event, name); | |
3062 | if (format) | |
3063 | return format; | |
3064 | return pevent_find_field(event, name); | |
3065 | } | |
3066 | ||
3067 | /** | |
3068 | * pevent_read_number - read a number from data | |
3069 | * @pevent: handle for the pevent | |
3070 | * @ptr: the raw data | |
3071 | * @size: the size of the data that holds the number | |
3072 | * | |
3073 | * Returns the number (converted to host) from the | |
3074 | * raw data. | |
3075 | */ | |
3076 | unsigned long long pevent_read_number(struct pevent *pevent, | |
3077 | const void *ptr, int size) | |
3078 | { | |
3079 | switch (size) { | |
3080 | case 1: | |
3081 | return *(unsigned char *)ptr; | |
3082 | case 2: | |
3083 | return data2host2(pevent, ptr); | |
3084 | case 4: | |
3085 | return data2host4(pevent, ptr); | |
3086 | case 8: | |
3087 | return data2host8(pevent, ptr); | |
3088 | default: | |
3089 | /* BUG! */ | |
3090 | return 0; | |
3091 | } | |
3092 | } | |
3093 | ||
3094 | /** | |
3095 | * pevent_read_number_field - read a number from data | |
3096 | * @field: a handle to the field | |
3097 | * @data: the raw data to read | |
3098 | * @value: the value to place the number in | |
3099 | * | |
3100 | * Reads raw data according to a field offset and size, | |
3101 | * and translates it into @value. | |
3102 | * | |
3103 | * Returns 0 on success, -1 otherwise. | |
3104 | */ | |
3105 | int pevent_read_number_field(struct format_field *field, const void *data, | |
3106 | unsigned long long *value) | |
3107 | { | |
3108 | if (!field) | |
3109 | return -1; | |
3110 | switch (field->size) { | |
3111 | case 1: | |
3112 | case 2: | |
3113 | case 4: | |
3114 | case 8: | |
3115 | *value = pevent_read_number(field->event->pevent, | |
3116 | data + field->offset, field->size); | |
3117 | return 0; | |
3118 | default: | |
3119 | return -1; | |
3120 | } | |
3121 | } | |
3122 | ||
3123 | static int get_common_info(struct pevent *pevent, | |
3124 | const char *type, int *offset, int *size) | |
3125 | { | |
3126 | struct event_format *event; | |
3127 | struct format_field *field; | |
3128 | ||
3129 | /* | |
3130 | * All events should have the same common elements. | |
3131 | * Pick any event to find where the type is; | |
3132 | */ | |
a6d2a61a ACM |
3133 | if (!pevent->events) { |
3134 | do_warning("no event_list!"); | |
3135 | return -1; | |
3136 | } | |
f7d82350 SR |
3137 | |
3138 | event = pevent->events[0]; | |
3139 | field = pevent_find_common_field(event, type); | |
3140 | if (!field) | |
0866a97e | 3141 | return -1; |
f7d82350 SR |
3142 | |
3143 | *offset = field->offset; | |
3144 | *size = field->size; | |
3145 | ||
3146 | return 0; | |
3147 | } | |
3148 | ||
3149 | static int __parse_common(struct pevent *pevent, void *data, | |
3150 | int *size, int *offset, const char *name) | |
3151 | { | |
3152 | int ret; | |
3153 | ||
3154 | if (!*size) { | |
3155 | ret = get_common_info(pevent, name, offset, size); | |
3156 | if (ret < 0) | |
3157 | return ret; | |
3158 | } | |
3159 | return pevent_read_number(pevent, data + *offset, *size); | |
3160 | } | |
3161 | ||
3162 | static int trace_parse_common_type(struct pevent *pevent, void *data) | |
3163 | { | |
3164 | return __parse_common(pevent, data, | |
3165 | &pevent->type_size, &pevent->type_offset, | |
3166 | "common_type"); | |
3167 | } | |
3168 | ||
3169 | static int parse_common_pid(struct pevent *pevent, void *data) | |
3170 | { | |
3171 | return __parse_common(pevent, data, | |
3172 | &pevent->pid_size, &pevent->pid_offset, | |
3173 | "common_pid"); | |
3174 | } | |
3175 | ||
3176 | static int parse_common_pc(struct pevent *pevent, void *data) | |
3177 | { | |
3178 | return __parse_common(pevent, data, | |
3179 | &pevent->pc_size, &pevent->pc_offset, | |
3180 | "common_preempt_count"); | |
3181 | } | |
3182 | ||
3183 | static int parse_common_flags(struct pevent *pevent, void *data) | |
3184 | { | |
3185 | return __parse_common(pevent, data, | |
3186 | &pevent->flags_size, &pevent->flags_offset, | |
3187 | "common_flags"); | |
3188 | } | |
3189 | ||
3190 | static int parse_common_lock_depth(struct pevent *pevent, void *data) | |
3191 | { | |
0866a97e SR |
3192 | return __parse_common(pevent, data, |
3193 | &pevent->ld_size, &pevent->ld_offset, | |
3194 | "common_lock_depth"); | |
3195 | } | |
f7d82350 | 3196 | |
0866a97e SR |
3197 | static int parse_common_migrate_disable(struct pevent *pevent, void *data) |
3198 | { | |
3199 | return __parse_common(pevent, data, | |
3200 | &pevent->ld_size, &pevent->ld_offset, | |
3201 | "common_migrate_disable"); | |
f7d82350 SR |
3202 | } |
3203 | ||
3204 | static int events_id_cmp(const void *a, const void *b); | |
3205 | ||
3206 | /** | |
3207 | * pevent_find_event - find an event by given id | |
3208 | * @pevent: a handle to the pevent | |
3209 | * @id: the id of the event | |
3210 | * | |
3211 | * Returns an event that has a given @id. | |
3212 | */ | |
3213 | struct event_format *pevent_find_event(struct pevent *pevent, int id) | |
3214 | { | |
3215 | struct event_format **eventptr; | |
3216 | struct event_format key; | |
3217 | struct event_format *pkey = &key; | |
3218 | ||
3219 | /* Check cache first */ | |
3220 | if (pevent->last_event && pevent->last_event->id == id) | |
3221 | return pevent->last_event; | |
3222 | ||
3223 | key.id = id; | |
3224 | ||
3225 | eventptr = bsearch(&pkey, pevent->events, pevent->nr_events, | |
3226 | sizeof(*pevent->events), events_id_cmp); | |
3227 | ||
3228 | if (eventptr) { | |
3229 | pevent->last_event = *eventptr; | |
3230 | return *eventptr; | |
3231 | } | |
3232 | ||
3233 | return NULL; | |
3234 | } | |
3235 | ||
3236 | /** | |
3237 | * pevent_find_event_by_name - find an event by given name | |
3238 | * @pevent: a handle to the pevent | |
3239 | * @sys: the system name to search for | |
3240 | * @name: the name of the event to search for | |
3241 | * | |
3242 | * This returns an event with a given @name and under the system | |
3243 | * @sys. If @sys is NULL the first event with @name is returned. | |
3244 | */ | |
3245 | struct event_format * | |
3246 | pevent_find_event_by_name(struct pevent *pevent, | |
3247 | const char *sys, const char *name) | |
3248 | { | |
3249 | struct event_format *event; | |
3250 | int i; | |
3251 | ||
3252 | if (pevent->last_event && | |
3253 | strcmp(pevent->last_event->name, name) == 0 && | |
3254 | (!sys || strcmp(pevent->last_event->system, sys) == 0)) | |
3255 | return pevent->last_event; | |
3256 | ||
3257 | for (i = 0; i < pevent->nr_events; i++) { | |
3258 | event = pevent->events[i]; | |
3259 | if (strcmp(event->name, name) == 0) { | |
3260 | if (!sys) | |
3261 | break; | |
3262 | if (strcmp(event->system, sys) == 0) | |
3263 | break; | |
3264 | } | |
3265 | } | |
3266 | if (i == pevent->nr_events) | |
3267 | event = NULL; | |
3268 | ||
3269 | pevent->last_event = event; | |
3270 | return event; | |
3271 | } | |
3272 | ||
3273 | static unsigned long long | |
3274 | eval_num_arg(void *data, int size, struct event_format *event, struct print_arg *arg) | |
3275 | { | |
3276 | struct pevent *pevent = event->pevent; | |
3277 | unsigned long long val = 0; | |
3278 | unsigned long long left, right; | |
3279 | struct print_arg *typearg = NULL; | |
3280 | struct print_arg *larg; | |
3281 | unsigned long offset; | |
3282 | unsigned int field_size; | |
3283 | ||
3284 | switch (arg->type) { | |
3285 | case PRINT_NULL: | |
3286 | /* ?? */ | |
3287 | return 0; | |
3288 | case PRINT_ATOM: | |
3289 | return strtoull(arg->atom.atom, NULL, 0); | |
3290 | case PRINT_FIELD: | |
3291 | if (!arg->field.field) { | |
3292 | arg->field.field = pevent_find_any_field(event, arg->field.name); | |
3293 | if (!arg->field.field) | |
a6d2a61a ACM |
3294 | goto out_warning_field; |
3295 | ||
f7d82350 SR |
3296 | } |
3297 | /* must be a number */ | |
3298 | val = pevent_read_number(pevent, data + arg->field.field->offset, | |
3299 | arg->field.field->size); | |
3300 | break; | |
3301 | case PRINT_FLAGS: | |
3302 | case PRINT_SYMBOL: | |
e080e6f1 | 3303 | case PRINT_HEX: |
f7d82350 SR |
3304 | break; |
3305 | case PRINT_TYPE: | |
3306 | val = eval_num_arg(data, size, event, arg->typecast.item); | |
3307 | return eval_type(val, arg, 0); | |
3308 | case PRINT_STRING: | |
3309 | case PRINT_BSTRING: | |
3310 | return 0; | |
3311 | case PRINT_FUNC: { | |
3312 | struct trace_seq s; | |
3313 | trace_seq_init(&s); | |
3314 | val = process_defined_func(&s, data, size, event, arg); | |
3315 | trace_seq_destroy(&s); | |
3316 | return val; | |
3317 | } | |
3318 | case PRINT_OP: | |
3319 | if (strcmp(arg->op.op, "[") == 0) { | |
3320 | /* | |
3321 | * Arrays are special, since we don't want | |
3322 | * to read the arg as is. | |
3323 | */ | |
3324 | right = eval_num_arg(data, size, event, arg->op.right); | |
3325 | ||
3326 | /* handle typecasts */ | |
3327 | larg = arg->op.left; | |
3328 | while (larg->type == PRINT_TYPE) { | |
3329 | if (!typearg) | |
3330 | typearg = larg; | |
3331 | larg = larg->typecast.item; | |
3332 | } | |
3333 | ||
3334 | /* Default to long size */ | |
3335 | field_size = pevent->long_size; | |
3336 | ||
3337 | switch (larg->type) { | |
3338 | case PRINT_DYNAMIC_ARRAY: | |
3339 | offset = pevent_read_number(pevent, | |
3340 | data + larg->dynarray.field->offset, | |
3341 | larg->dynarray.field->size); | |
3342 | if (larg->dynarray.field->elementsize) | |
3343 | field_size = larg->dynarray.field->elementsize; | |
3344 | /* | |
3345 | * The actual length of the dynamic array is stored | |
3346 | * in the top half of the field, and the offset | |
3347 | * is in the bottom half of the 32 bit field. | |
3348 | */ | |
3349 | offset &= 0xffff; | |
3350 | offset += right; | |
3351 | break; | |
3352 | case PRINT_FIELD: | |
3353 | if (!larg->field.field) { | |
3354 | larg->field.field = | |
3355 | pevent_find_any_field(event, larg->field.name); | |
a6d2a61a ACM |
3356 | if (!larg->field.field) { |
3357 | arg = larg; | |
3358 | goto out_warning_field; | |
3359 | } | |
f7d82350 SR |
3360 | } |
3361 | field_size = larg->field.field->elementsize; | |
3362 | offset = larg->field.field->offset + | |
3363 | right * larg->field.field->elementsize; | |
3364 | break; | |
3365 | default: | |
3366 | goto default_op; /* oops, all bets off */ | |
3367 | } | |
3368 | val = pevent_read_number(pevent, | |
3369 | data + offset, field_size); | |
3370 | if (typearg) | |
3371 | val = eval_type(val, typearg, 1); | |
3372 | break; | |
3373 | } else if (strcmp(arg->op.op, "?") == 0) { | |
3374 | left = eval_num_arg(data, size, event, arg->op.left); | |
3375 | arg = arg->op.right; | |
3376 | if (left) | |
3377 | val = eval_num_arg(data, size, event, arg->op.left); | |
3378 | else | |
3379 | val = eval_num_arg(data, size, event, arg->op.right); | |
3380 | break; | |
3381 | } | |
3382 | default_op: | |
3383 | left = eval_num_arg(data, size, event, arg->op.left); | |
3384 | right = eval_num_arg(data, size, event, arg->op.right); | |
3385 | switch (arg->op.op[0]) { | |
3386 | case '!': | |
3387 | switch (arg->op.op[1]) { | |
3388 | case 0: | |
3389 | val = !right; | |
3390 | break; | |
3391 | case '=': | |
3392 | val = left != right; | |
3393 | break; | |
3394 | default: | |
a6d2a61a | 3395 | goto out_warning_op; |
f7d82350 SR |
3396 | } |
3397 | break; | |
3398 | case '~': | |
3399 | val = ~right; | |
3400 | break; | |
3401 | case '|': | |
3402 | if (arg->op.op[1]) | |
3403 | val = left || right; | |
3404 | else | |
3405 | val = left | right; | |
3406 | break; | |
3407 | case '&': | |
3408 | if (arg->op.op[1]) | |
3409 | val = left && right; | |
3410 | else | |
3411 | val = left & right; | |
3412 | break; | |
3413 | case '<': | |
3414 | switch (arg->op.op[1]) { | |
3415 | case 0: | |
3416 | val = left < right; | |
3417 | break; | |
3418 | case '<': | |
3419 | val = left << right; | |
3420 | break; | |
3421 | case '=': | |
3422 | val = left <= right; | |
3423 | break; | |
3424 | default: | |
a6d2a61a | 3425 | goto out_warning_op; |
f7d82350 SR |
3426 | } |
3427 | break; | |
3428 | case '>': | |
3429 | switch (arg->op.op[1]) { | |
3430 | case 0: | |
3431 | val = left > right; | |
3432 | break; | |
3433 | case '>': | |
3434 | val = left >> right; | |
3435 | break; | |
3436 | case '=': | |
3437 | val = left >= right; | |
3438 | break; | |
3439 | default: | |
a6d2a61a | 3440 | goto out_warning_op; |
f7d82350 SR |
3441 | } |
3442 | break; | |
3443 | case '=': | |
3444 | if (arg->op.op[1] != '=') | |
a6d2a61a ACM |
3445 | goto out_warning_op; |
3446 | ||
f7d82350 SR |
3447 | val = left == right; |
3448 | break; | |
3449 | case '-': | |
3450 | val = left - right; | |
3451 | break; | |
3452 | case '+': | |
3453 | val = left + right; | |
3454 | break; | |
2e7a5fc8 SR |
3455 | case '/': |
3456 | val = left / right; | |
3457 | break; | |
3458 | case '*': | |
3459 | val = left * right; | |
3460 | break; | |
f7d82350 | 3461 | default: |
a6d2a61a | 3462 | goto out_warning_op; |
f7d82350 SR |
3463 | } |
3464 | break; | |
0497a9eb SR |
3465 | case PRINT_DYNAMIC_ARRAY: |
3466 | /* Without [], we pass the address to the dynamic data */ | |
3467 | offset = pevent_read_number(pevent, | |
3468 | data + arg->dynarray.field->offset, | |
3469 | arg->dynarray.field->size); | |
3470 | /* | |
3471 | * The actual length of the dynamic array is stored | |
3472 | * in the top half of the field, and the offset | |
3473 | * is in the bottom half of the 32 bit field. | |
3474 | */ | |
3475 | offset &= 0xffff; | |
6b5fa0ba | 3476 | val = (unsigned long long)((unsigned long)data + offset); |
0497a9eb | 3477 | break; |
f7d82350 SR |
3478 | default: /* not sure what to do there */ |
3479 | return 0; | |
3480 | } | |
3481 | return val; | |
a6d2a61a ACM |
3482 | |
3483 | out_warning_op: | |
3484 | do_warning("%s: unknown op '%s'", __func__, arg->op.op); | |
3485 | return 0; | |
3486 | ||
3487 | out_warning_field: | |
3488 | do_warning("%s: field %s not found", __func__, arg->field.name); | |
3489 | return 0; | |
f7d82350 SR |
3490 | } |
3491 | ||
3492 | struct flag { | |
3493 | const char *name; | |
3494 | unsigned long long value; | |
3495 | }; | |
3496 | ||
3497 | static const struct flag flags[] = { | |
3498 | { "HI_SOFTIRQ", 0 }, | |
3499 | { "TIMER_SOFTIRQ", 1 }, | |
3500 | { "NET_TX_SOFTIRQ", 2 }, | |
3501 | { "NET_RX_SOFTIRQ", 3 }, | |
3502 | { "BLOCK_SOFTIRQ", 4 }, | |
3503 | { "BLOCK_IOPOLL_SOFTIRQ", 5 }, | |
3504 | { "TASKLET_SOFTIRQ", 6 }, | |
3505 | { "SCHED_SOFTIRQ", 7 }, | |
3506 | { "HRTIMER_SOFTIRQ", 8 }, | |
3507 | { "RCU_SOFTIRQ", 9 }, | |
3508 | ||
3509 | { "HRTIMER_NORESTART", 0 }, | |
3510 | { "HRTIMER_RESTART", 1 }, | |
3511 | }; | |
3512 | ||
3513 | static unsigned long long eval_flag(const char *flag) | |
3514 | { | |
3515 | int i; | |
3516 | ||
3517 | /* | |
3518 | * Some flags in the format files do not get converted. | |
3519 | * If the flag is not numeric, see if it is something that | |
3520 | * we already know about. | |
3521 | */ | |
3522 | if (isdigit(flag[0])) | |
3523 | return strtoull(flag, NULL, 0); | |
3524 | ||
3525 | for (i = 0; i < (int)(sizeof(flags)/sizeof(flags[0])); i++) | |
3526 | if (strcmp(flags[i].name, flag) == 0) | |
3527 | return flags[i].value; | |
3528 | ||
3529 | return 0; | |
3530 | } | |
3531 | ||
3532 | static void print_str_to_seq(struct trace_seq *s, const char *format, | |
3533 | int len_arg, const char *str) | |
3534 | { | |
3535 | if (len_arg >= 0) | |
3536 | trace_seq_printf(s, format, len_arg, str); | |
3537 | else | |
3538 | trace_seq_printf(s, format, str); | |
3539 | } | |
3540 | ||
3541 | static void print_str_arg(struct trace_seq *s, void *data, int size, | |
3542 | struct event_format *event, const char *format, | |
3543 | int len_arg, struct print_arg *arg) | |
3544 | { | |
3545 | struct pevent *pevent = event->pevent; | |
3546 | struct print_flag_sym *flag; | |
b7008071 | 3547 | struct format_field *field; |
0970b5f4 | 3548 | struct printk_map *printk; |
f7d82350 SR |
3549 | unsigned long long val, fval; |
3550 | unsigned long addr; | |
3551 | char *str; | |
e080e6f1 | 3552 | unsigned char *hex; |
f7d82350 | 3553 | int print; |
e080e6f1 | 3554 | int i, len; |
f7d82350 SR |
3555 | |
3556 | switch (arg->type) { | |
3557 | case PRINT_NULL: | |
3558 | /* ?? */ | |
3559 | return; | |
3560 | case PRINT_ATOM: | |
3561 | print_str_to_seq(s, format, len_arg, arg->atom.atom); | |
3562 | return; | |
3563 | case PRINT_FIELD: | |
b7008071 NK |
3564 | field = arg->field.field; |
3565 | if (!field) { | |
3566 | field = pevent_find_any_field(event, arg->field.name); | |
a6d2a61a ACM |
3567 | if (!field) { |
3568 | str = arg->field.name; | |
3569 | goto out_warning_field; | |
3570 | } | |
b7008071 | 3571 | arg->field.field = field; |
f7d82350 SR |
3572 | } |
3573 | /* Zero sized fields, mean the rest of the data */ | |
b7008071 | 3574 | len = field->size ? : size - field->offset; |
f7d82350 SR |
3575 | |
3576 | /* | |
3577 | * Some events pass in pointers. If this is not an array | |
3578 | * and the size is the same as long_size, assume that it | |
3579 | * is a pointer. | |
3580 | */ | |
b7008071 NK |
3581 | if (!(field->flags & FIELD_IS_ARRAY) && |
3582 | field->size == pevent->long_size) { | |
3583 | addr = *(unsigned long *)(data + field->offset); | |
0970b5f4 SRRH |
3584 | /* Check if it matches a print format */ |
3585 | printk = find_printk(pevent, addr); | |
3586 | if (printk) | |
3587 | trace_seq_puts(s, printk->printk); | |
3588 | else | |
3589 | trace_seq_printf(s, "%lx", addr); | |
f7d82350 SR |
3590 | break; |
3591 | } | |
a6d2a61a ACM |
3592 | str = malloc(len + 1); |
3593 | if (!str) { | |
3594 | do_warning("%s: not enough memory!", __func__); | |
3595 | return; | |
3596 | } | |
b7008071 | 3597 | memcpy(str, data + field->offset, len); |
f7d82350 SR |
3598 | str[len] = 0; |
3599 | print_str_to_seq(s, format, len_arg, str); | |
3600 | free(str); | |
3601 | break; | |
3602 | case PRINT_FLAGS: | |
3603 | val = eval_num_arg(data, size, event, arg->flags.field); | |
3604 | print = 0; | |
3605 | for (flag = arg->flags.flags; flag; flag = flag->next) { | |
3606 | fval = eval_flag(flag->value); | |
3607 | if (!val && !fval) { | |
3608 | print_str_to_seq(s, format, len_arg, flag->str); | |
3609 | break; | |
3610 | } | |
3611 | if (fval && (val & fval) == fval) { | |
3612 | if (print && arg->flags.delim) | |
3613 | trace_seq_puts(s, arg->flags.delim); | |
3614 | print_str_to_seq(s, format, len_arg, flag->str); | |
3615 | print = 1; | |
3616 | val &= ~fval; | |
3617 | } | |
3618 | } | |
3619 | break; | |
3620 | case PRINT_SYMBOL: | |
3621 | val = eval_num_arg(data, size, event, arg->symbol.field); | |
3622 | for (flag = arg->symbol.symbols; flag; flag = flag->next) { | |
3623 | fval = eval_flag(flag->value); | |
3624 | if (val == fval) { | |
3625 | print_str_to_seq(s, format, len_arg, flag->str); | |
3626 | break; | |
3627 | } | |
3628 | } | |
3629 | break; | |
e080e6f1 | 3630 | case PRINT_HEX: |
b30f75eb HC |
3631 | if (arg->hex.field->type == PRINT_DYNAMIC_ARRAY) { |
3632 | unsigned long offset; | |
3633 | offset = pevent_read_number(pevent, | |
3634 | data + arg->hex.field->dynarray.field->offset, | |
3635 | arg->hex.field->dynarray.field->size); | |
3636 | hex = data + (offset & 0xffff); | |
3637 | } else { | |
3638 | field = arg->hex.field->field.field; | |
3639 | if (!field) { | |
3640 | str = arg->hex.field->field.name; | |
3641 | field = pevent_find_any_field(event, str); | |
3642 | if (!field) | |
3643 | goto out_warning_field; | |
3644 | arg->hex.field->field.field = field; | |
3645 | } | |
3646 | hex = data + field->offset; | |
e080e6f1 | 3647 | } |
e080e6f1 NK |
3648 | len = eval_num_arg(data, size, event, arg->hex.size); |
3649 | for (i = 0; i < len; i++) { | |
3650 | if (i) | |
3651 | trace_seq_putc(s, ' '); | |
3652 | trace_seq_printf(s, "%02x", hex[i]); | |
3653 | } | |
3654 | break; | |
f7d82350 SR |
3655 | |
3656 | case PRINT_TYPE: | |
3657 | break; | |
3658 | case PRINT_STRING: { | |
3659 | int str_offset; | |
3660 | ||
3661 | if (arg->string.offset == -1) { | |
3662 | struct format_field *f; | |
3663 | ||
3664 | f = pevent_find_any_field(event, arg->string.string); | |
3665 | arg->string.offset = f->offset; | |
3666 | } | |
3667 | str_offset = data2host4(pevent, data + arg->string.offset); | |
3668 | str_offset &= 0xffff; | |
3669 | print_str_to_seq(s, format, len_arg, ((char *)data) + str_offset); | |
3670 | break; | |
3671 | } | |
3672 | case PRINT_BSTRING: | |
c2e6dc2b | 3673 | print_str_to_seq(s, format, len_arg, arg->string.string); |
f7d82350 SR |
3674 | break; |
3675 | case PRINT_OP: | |
3676 | /* | |
3677 | * The only op for string should be ? : | |
3678 | */ | |
3679 | if (arg->op.op[0] != '?') | |
3680 | return; | |
3681 | val = eval_num_arg(data, size, event, arg->op.left); | |
3682 | if (val) | |
3683 | print_str_arg(s, data, size, event, | |
3684 | format, len_arg, arg->op.right->op.left); | |
3685 | else | |
3686 | print_str_arg(s, data, size, event, | |
3687 | format, len_arg, arg->op.right->op.right); | |
3688 | break; | |
3689 | case PRINT_FUNC: | |
3690 | process_defined_func(s, data, size, event, arg); | |
3691 | break; | |
3692 | default: | |
3693 | /* well... */ | |
3694 | break; | |
3695 | } | |
a6d2a61a ACM |
3696 | |
3697 | return; | |
3698 | ||
3699 | out_warning_field: | |
3700 | do_warning("%s: field %s not found", __func__, arg->field.name); | |
f7d82350 SR |
3701 | } |
3702 | ||
3703 | static unsigned long long | |
3704 | process_defined_func(struct trace_seq *s, void *data, int size, | |
3705 | struct event_format *event, struct print_arg *arg) | |
3706 | { | |
3707 | struct pevent_function_handler *func_handle = arg->func.func; | |
3708 | struct pevent_func_params *param; | |
3709 | unsigned long long *args; | |
3710 | unsigned long long ret; | |
3711 | struct print_arg *farg; | |
3712 | struct trace_seq str; | |
3713 | struct save_str { | |
3714 | struct save_str *next; | |
3715 | char *str; | |
3716 | } *strings = NULL, *string; | |
3717 | int i; | |
3718 | ||
3719 | if (!func_handle->nr_args) { | |
3720 | ret = (*func_handle->func)(s, NULL); | |
3721 | goto out; | |
3722 | } | |
3723 | ||
3724 | farg = arg->func.args; | |
3725 | param = func_handle->params; | |
3726 | ||
a6d2a61a ACM |
3727 | ret = ULLONG_MAX; |
3728 | args = malloc(sizeof(*args) * func_handle->nr_args); | |
3729 | if (!args) | |
3730 | goto out; | |
3731 | ||
f7d82350 SR |
3732 | for (i = 0; i < func_handle->nr_args; i++) { |
3733 | switch (param->type) { | |
3734 | case PEVENT_FUNC_ARG_INT: | |
3735 | case PEVENT_FUNC_ARG_LONG: | |
3736 | case PEVENT_FUNC_ARG_PTR: | |
3737 | args[i] = eval_num_arg(data, size, event, farg); | |
3738 | break; | |
3739 | case PEVENT_FUNC_ARG_STRING: | |
3740 | trace_seq_init(&str); | |
3741 | print_str_arg(&str, data, size, event, "%s", -1, farg); | |
3742 | trace_seq_terminate(&str); | |
a6d2a61a ACM |
3743 | string = malloc(sizeof(*string)); |
3744 | if (!string) { | |
3745 | do_warning("%s(%d): malloc str", __func__, __LINE__); | |
3746 | goto out_free; | |
3747 | } | |
f7d82350 SR |
3748 | string->next = strings; |
3749 | string->str = strdup(str.buffer); | |
a6d2a61a ACM |
3750 | if (!string->str) { |
3751 | free(string); | |
3752 | do_warning("%s(%d): malloc str", __func__, __LINE__); | |
3753 | goto out_free; | |
3754 | } | |
0cf26013 | 3755 | args[i] = (uintptr_t)string->str; |
f7d82350 SR |
3756 | strings = string; |
3757 | trace_seq_destroy(&str); | |
3758 | break; | |
3759 | default: | |
3760 | /* | |
3761 | * Something went totally wrong, this is not | |
3762 | * an input error, something in this code broke. | |
3763 | */ | |
a6d2a61a ACM |
3764 | do_warning("Unexpected end of arguments\n"); |
3765 | goto out_free; | |
f7d82350 SR |
3766 | } |
3767 | farg = farg->next; | |
21c69e72 | 3768 | param = param->next; |
f7d82350 SR |
3769 | } |
3770 | ||
3771 | ret = (*func_handle->func)(s, args); | |
a6d2a61a | 3772 | out_free: |
f7d82350 SR |
3773 | free(args); |
3774 | while (strings) { | |
3775 | string = strings; | |
3776 | strings = string->next; | |
3777 | free(string->str); | |
3778 | free(string); | |
3779 | } | |
3780 | ||
3781 | out: | |
3782 | /* TBD : handle return type here */ | |
3783 | return ret; | |
3784 | } | |
3785 | ||
0dbca1e3 ACM |
3786 | static void free_args(struct print_arg *args) |
3787 | { | |
3788 | struct print_arg *next; | |
3789 | ||
3790 | while (args) { | |
3791 | next = args->next; | |
3792 | ||
3793 | free_arg(args); | |
3794 | args = next; | |
3795 | } | |
3796 | } | |
3797 | ||
f7d82350 SR |
3798 | static struct print_arg *make_bprint_args(char *fmt, void *data, int size, struct event_format *event) |
3799 | { | |
3800 | struct pevent *pevent = event->pevent; | |
3801 | struct format_field *field, *ip_field; | |
3802 | struct print_arg *args, *arg, **next; | |
3803 | unsigned long long ip, val; | |
3804 | char *ptr; | |
3805 | void *bptr; | |
c2e6dc2b | 3806 | int vsize; |
f7d82350 SR |
3807 | |
3808 | field = pevent->bprint_buf_field; | |
3809 | ip_field = pevent->bprint_ip_field; | |
3810 | ||
3811 | if (!field) { | |
3812 | field = pevent_find_field(event, "buf"); | |
a6d2a61a ACM |
3813 | if (!field) { |
3814 | do_warning("can't find buffer field for binary printk"); | |
3815 | return NULL; | |
3816 | } | |
f7d82350 | 3817 | ip_field = pevent_find_field(event, "ip"); |
a6d2a61a ACM |
3818 | if (!ip_field) { |
3819 | do_warning("can't find ip field for binary printk"); | |
3820 | return NULL; | |
3821 | } | |
f7d82350 SR |
3822 | pevent->bprint_buf_field = field; |
3823 | pevent->bprint_ip_field = ip_field; | |
3824 | } | |
3825 | ||
3826 | ip = pevent_read_number(pevent, data + ip_field->offset, ip_field->size); | |
3827 | ||
3828 | /* | |
3829 | * The first arg is the IP pointer. | |
3830 | */ | |
3831 | args = alloc_arg(); | |
b1ac754b NK |
3832 | if (!args) { |
3833 | do_warning("%s(%d): not enough memory!", __func__, __LINE__); | |
3834 | return NULL; | |
3835 | } | |
f7d82350 SR |
3836 | arg = args; |
3837 | arg->next = NULL; | |
3838 | next = &arg->next; | |
3839 | ||
3840 | arg->type = PRINT_ATOM; | |
0dbca1e3 ACM |
3841 | |
3842 | if (asprintf(&arg->atom.atom, "%lld", ip) < 0) | |
3843 | goto out_free; | |
f7d82350 | 3844 | |
0883d9d7 SRRH |
3845 | /* skip the first "%pf: " */ |
3846 | for (ptr = fmt + 5, bptr = data + field->offset; | |
f7d82350 SR |
3847 | bptr < data + size && *ptr; ptr++) { |
3848 | int ls = 0; | |
3849 | ||
3850 | if (*ptr == '%') { | |
3851 | process_again: | |
3852 | ptr++; | |
3853 | switch (*ptr) { | |
3854 | case '%': | |
3855 | break; | |
3856 | case 'l': | |
3857 | ls++; | |
3858 | goto process_again; | |
3859 | case 'L': | |
3860 | ls = 2; | |
3861 | goto process_again; | |
3862 | case '0' ... '9': | |
3863 | goto process_again; | |
c2e6dc2b SR |
3864 | case '.': |
3865 | goto process_again; | |
f7d82350 SR |
3866 | case 'p': |
3867 | ls = 1; | |
3868 | /* fall through */ | |
3869 | case 'd': | |
3870 | case 'u': | |
3871 | case 'x': | |
3872 | case 'i': | |
f7d82350 SR |
3873 | switch (ls) { |
3874 | case 0: | |
c2e6dc2b | 3875 | vsize = 4; |
f7d82350 SR |
3876 | break; |
3877 | case 1: | |
c2e6dc2b | 3878 | vsize = pevent->long_size; |
f7d82350 SR |
3879 | break; |
3880 | case 2: | |
c2e6dc2b | 3881 | vsize = 8; |
c9bbabe3 | 3882 | break; |
f7d82350 | 3883 | default: |
c2e6dc2b | 3884 | vsize = ls; /* ? */ |
f7d82350 SR |
3885 | break; |
3886 | } | |
c2e6dc2b SR |
3887 | /* fall through */ |
3888 | case '*': | |
3889 | if (*ptr == '*') | |
3890 | vsize = 4; | |
3891 | ||
3892 | /* the pointers are always 4 bytes aligned */ | |
3893 | bptr = (void *)(((unsigned long)bptr + 3) & | |
3894 | ~3); | |
3895 | val = pevent_read_number(pevent, bptr, vsize); | |
3896 | bptr += vsize; | |
f7d82350 | 3897 | arg = alloc_arg(); |
b1ac754b NK |
3898 | if (!arg) { |
3899 | do_warning("%s(%d): not enough memory!", | |
3900 | __func__, __LINE__); | |
3901 | goto out_free; | |
3902 | } | |
f7d82350 SR |
3903 | arg->next = NULL; |
3904 | arg->type = PRINT_ATOM; | |
0dbca1e3 ACM |
3905 | if (asprintf(&arg->atom.atom, "%lld", val) < 0) { |
3906 | free(arg); | |
3907 | goto out_free; | |
3908 | } | |
f7d82350 SR |
3909 | *next = arg; |
3910 | next = &arg->next; | |
c2e6dc2b SR |
3911 | /* |
3912 | * The '*' case means that an arg is used as the length. | |
3913 | * We need to continue to figure out for what. | |
3914 | */ | |
3915 | if (*ptr == '*') | |
3916 | goto process_again; | |
3917 | ||
f7d82350 SR |
3918 | break; |
3919 | case 's': | |
3920 | arg = alloc_arg(); | |
b1ac754b NK |
3921 | if (!arg) { |
3922 | do_warning("%s(%d): not enough memory!", | |
3923 | __func__, __LINE__); | |
3924 | goto out_free; | |
3925 | } | |
f7d82350 SR |
3926 | arg->next = NULL; |
3927 | arg->type = PRINT_BSTRING; | |
3928 | arg->string.string = strdup(bptr); | |
ca63858e | 3929 | if (!arg->string.string) |
a6d2a61a | 3930 | goto out_free; |
f7d82350 SR |
3931 | bptr += strlen(bptr) + 1; |
3932 | *next = arg; | |
3933 | next = &arg->next; | |
3934 | default: | |
3935 | break; | |
3936 | } | |
3937 | } | |
3938 | } | |
3939 | ||
3940 | return args; | |
f7d82350 | 3941 | |
0dbca1e3 ACM |
3942 | out_free: |
3943 | free_args(args); | |
3944 | return NULL; | |
f7d82350 SR |
3945 | } |
3946 | ||
3947 | static char * | |
1d037ca1 IT |
3948 | get_bprint_format(void *data, int size __maybe_unused, |
3949 | struct event_format *event) | |
f7d82350 SR |
3950 | { |
3951 | struct pevent *pevent = event->pevent; | |
3952 | unsigned long long addr; | |
3953 | struct format_field *field; | |
3954 | struct printk_map *printk; | |
3955 | char *format; | |
f7d82350 SR |
3956 | |
3957 | field = pevent->bprint_fmt_field; | |
3958 | ||
3959 | if (!field) { | |
3960 | field = pevent_find_field(event, "fmt"); | |
a6d2a61a ACM |
3961 | if (!field) { |
3962 | do_warning("can't find format field for binary printk"); | |
3963 | return NULL; | |
3964 | } | |
f7d82350 SR |
3965 | pevent->bprint_fmt_field = field; |
3966 | } | |
3967 | ||
3968 | addr = pevent_read_number(pevent, data + field->offset, field->size); | |
3969 | ||
3970 | printk = find_printk(pevent, addr); | |
3971 | if (!printk) { | |
0883d9d7 | 3972 | if (asprintf(&format, "%%pf: (NO FORMAT FOUND at %llx)\n", addr) < 0) |
0dbca1e3 | 3973 | return NULL; |
f7d82350 SR |
3974 | return format; |
3975 | } | |
3976 | ||
0883d9d7 | 3977 | if (asprintf(&format, "%s: %s", "%pf", printk->printk) < 0) |
0dbca1e3 | 3978 | return NULL; |
f7d82350 SR |
3979 | |
3980 | return format; | |
3981 | } | |
3982 | ||
3983 | static void print_mac_arg(struct trace_seq *s, int mac, void *data, int size, | |
3984 | struct event_format *event, struct print_arg *arg) | |
3985 | { | |
3986 | unsigned char *buf; | |
27f94d52 | 3987 | const char *fmt = "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x"; |
f7d82350 SR |
3988 | |
3989 | if (arg->type == PRINT_FUNC) { | |
3990 | process_defined_func(s, data, size, event, arg); | |
3991 | return; | |
3992 | } | |
3993 | ||
3994 | if (arg->type != PRINT_FIELD) { | |
3995 | trace_seq_printf(s, "ARG TYPE NOT FIELD BUT %d", | |
3996 | arg->type); | |
3997 | return; | |
3998 | } | |
3999 | ||
4000 | if (mac == 'm') | |
4001 | fmt = "%.2x%.2x%.2x%.2x%.2x%.2x"; | |
4002 | if (!arg->field.field) { | |
4003 | arg->field.field = | |
4004 | pevent_find_any_field(event, arg->field.name); | |
a6d2a61a ACM |
4005 | if (!arg->field.field) { |
4006 | do_warning("%s: field %s not found", | |
4007 | __func__, arg->field.name); | |
4008 | return; | |
4009 | } | |
f7d82350 SR |
4010 | } |
4011 | if (arg->field.field->size != 6) { | |
4012 | trace_seq_printf(s, "INVALIDMAC"); | |
4013 | return; | |
4014 | } | |
4015 | buf = data + arg->field.field->offset; | |
4016 | trace_seq_printf(s, fmt, buf[0], buf[1], buf[2], buf[3], buf[4], buf[5]); | |
4017 | } | |
4018 | ||
600da3cf NK |
4019 | static int is_printable_array(char *p, unsigned int len) |
4020 | { | |
4021 | unsigned int i; | |
4022 | ||
4023 | for (i = 0; i < len && p[i]; i++) | |
5efb9fbd | 4024 | if (!isprint(p[i]) && !isspace(p[i])) |
600da3cf NK |
4025 | return 0; |
4026 | return 1; | |
4027 | } | |
4028 | ||
ca383a4d ACM |
4029 | static void print_event_fields(struct trace_seq *s, void *data, |
4030 | int size __maybe_unused, | |
f7d82350 SR |
4031 | struct event_format *event) |
4032 | { | |
4033 | struct format_field *field; | |
4034 | unsigned long long val; | |
4035 | unsigned int offset, len, i; | |
4036 | ||
4037 | field = event->format.fields; | |
4038 | while (field) { | |
4039 | trace_seq_printf(s, " %s=", field->name); | |
4040 | if (field->flags & FIELD_IS_ARRAY) { | |
4041 | offset = field->offset; | |
4042 | len = field->size; | |
4043 | if (field->flags & FIELD_IS_DYNAMIC) { | |
4044 | val = pevent_read_number(event->pevent, data + offset, len); | |
4045 | offset = val; | |
4046 | len = offset >> 16; | |
4047 | offset &= 0xffff; | |
4048 | } | |
600da3cf NK |
4049 | if (field->flags & FIELD_IS_STRING && |
4050 | is_printable_array(data + offset, len)) { | |
f7d82350 SR |
4051 | trace_seq_printf(s, "%s", (char *)data + offset); |
4052 | } else { | |
4053 | trace_seq_puts(s, "ARRAY["); | |
4054 | for (i = 0; i < len; i++) { | |
4055 | if (i) | |
4056 | trace_seq_puts(s, ", "); | |
4057 | trace_seq_printf(s, "%02x", | |
4058 | *((unsigned char *)data + offset + i)); | |
4059 | } | |
4060 | trace_seq_putc(s, ']'); | |
600da3cf | 4061 | field->flags &= ~FIELD_IS_STRING; |
f7d82350 SR |
4062 | } |
4063 | } else { | |
4064 | val = pevent_read_number(event->pevent, data + field->offset, | |
4065 | field->size); | |
4066 | if (field->flags & FIELD_IS_POINTER) { | |
4067 | trace_seq_printf(s, "0x%llx", val); | |
4068 | } else if (field->flags & FIELD_IS_SIGNED) { | |
4069 | switch (field->size) { | |
4070 | case 4: | |
4071 | /* | |
4072 | * If field is long then print it in hex. | |
4073 | * A long usually stores pointers. | |
4074 | */ | |
4075 | if (field->flags & FIELD_IS_LONG) | |
4076 | trace_seq_printf(s, "0x%x", (int)val); | |
4077 | else | |
4078 | trace_seq_printf(s, "%d", (int)val); | |
4079 | break; | |
4080 | case 2: | |
4081 | trace_seq_printf(s, "%2d", (short)val); | |
4082 | break; | |
4083 | case 1: | |
4084 | trace_seq_printf(s, "%1d", (char)val); | |
4085 | break; | |
4086 | default: | |
4087 | trace_seq_printf(s, "%lld", val); | |
4088 | } | |
4089 | } else { | |
4090 | if (field->flags & FIELD_IS_LONG) | |
4091 | trace_seq_printf(s, "0x%llx", val); | |
4092 | else | |
4093 | trace_seq_printf(s, "%llu", val); | |
4094 | } | |
4095 | } | |
4096 | field = field->next; | |
4097 | } | |
4098 | } | |
4099 | ||
4100 | static void pretty_print(struct trace_seq *s, void *data, int size, struct event_format *event) | |
4101 | { | |
4102 | struct pevent *pevent = event->pevent; | |
4103 | struct print_fmt *print_fmt = &event->print_fmt; | |
4104 | struct print_arg *arg = print_fmt->args; | |
4105 | struct print_arg *args = NULL; | |
4106 | const char *ptr = print_fmt->format; | |
4107 | unsigned long long val; | |
4108 | struct func_map *func; | |
4109 | const char *saveptr; | |
12e55569 | 4110 | struct trace_seq p; |
f7d82350 SR |
4111 | char *bprint_fmt = NULL; |
4112 | char format[32]; | |
4113 | int show_func; | |
4114 | int len_as_arg; | |
4115 | int len_arg; | |
4116 | int len; | |
4117 | int ls; | |
4118 | ||
4119 | if (event->flags & EVENT_FL_FAILED) { | |
4120 | trace_seq_printf(s, "[FAILED TO PARSE]"); | |
4121 | print_event_fields(s, data, size, event); | |
4122 | return; | |
4123 | } | |
4124 | ||
4125 | if (event->flags & EVENT_FL_ISBPRINT) { | |
4126 | bprint_fmt = get_bprint_format(data, size, event); | |
4127 | args = make_bprint_args(bprint_fmt, data, size, event); | |
4128 | arg = args; | |
4129 | ptr = bprint_fmt; | |
4130 | } | |
4131 | ||
4132 | for (; *ptr; ptr++) { | |
4133 | ls = 0; | |
4134 | if (*ptr == '\\') { | |
4135 | ptr++; | |
4136 | switch (*ptr) { | |
4137 | case 'n': | |
4138 | trace_seq_putc(s, '\n'); | |
4139 | break; | |
4140 | case 't': | |
4141 | trace_seq_putc(s, '\t'); | |
4142 | break; | |
4143 | case 'r': | |
4144 | trace_seq_putc(s, '\r'); | |
4145 | break; | |
4146 | case '\\': | |
4147 | trace_seq_putc(s, '\\'); | |
4148 | break; | |
4149 | default: | |
4150 | trace_seq_putc(s, *ptr); | |
4151 | break; | |
4152 | } | |
4153 | ||
4154 | } else if (*ptr == '%') { | |
4155 | saveptr = ptr; | |
4156 | show_func = 0; | |
4157 | len_as_arg = 0; | |
4158 | cont_process: | |
4159 | ptr++; | |
4160 | switch (*ptr) { | |
4161 | case '%': | |
4162 | trace_seq_putc(s, '%'); | |
4163 | break; | |
4164 | case '#': | |
4165 | /* FIXME: need to handle properly */ | |
4166 | goto cont_process; | |
4167 | case 'h': | |
4168 | ls--; | |
4169 | goto cont_process; | |
4170 | case 'l': | |
4171 | ls++; | |
4172 | goto cont_process; | |
4173 | case 'L': | |
4174 | ls = 2; | |
4175 | goto cont_process; | |
4176 | case '*': | |
4177 | /* The argument is the length. */ | |
245c5a18 NK |
4178 | if (!arg) { |
4179 | do_warning("no argument match"); | |
4180 | event->flags |= EVENT_FL_FAILED; | |
4181 | goto out_failed; | |
4182 | } | |
f7d82350 SR |
4183 | len_arg = eval_num_arg(data, size, event, arg); |
4184 | len_as_arg = 1; | |
4185 | arg = arg->next; | |
4186 | goto cont_process; | |
4187 | case '.': | |
4188 | case 'z': | |
4189 | case 'Z': | |
4190 | case '0' ... '9': | |
4191 | goto cont_process; | |
4192 | case 'p': | |
4193 | if (pevent->long_size == 4) | |
4194 | ls = 1; | |
4195 | else | |
4196 | ls = 2; | |
4197 | ||
4198 | if (*(ptr+1) == 'F' || | |
4199 | *(ptr+1) == 'f') { | |
4200 | ptr++; | |
4201 | show_func = *ptr; | |
4202 | } else if (*(ptr+1) == 'M' || *(ptr+1) == 'm') { | |
4203 | print_mac_arg(s, *(ptr+1), data, size, event, arg); | |
4204 | ptr++; | |
aaf05c72 | 4205 | arg = arg->next; |
f7d82350 SR |
4206 | break; |
4207 | } | |
4208 | ||
4209 | /* fall through */ | |
4210 | case 'd': | |
4211 | case 'i': | |
4212 | case 'x': | |
4213 | case 'X': | |
4214 | case 'u': | |
245c5a18 NK |
4215 | if (!arg) { |
4216 | do_warning("no argument match"); | |
4217 | event->flags |= EVENT_FL_FAILED; | |
4218 | goto out_failed; | |
4219 | } | |
f7d82350 SR |
4220 | |
4221 | len = ((unsigned long)ptr + 1) - | |
4222 | (unsigned long)saveptr; | |
4223 | ||
4224 | /* should never happen */ | |
245c5a18 NK |
4225 | if (len > 31) { |
4226 | do_warning("bad format!"); | |
4227 | event->flags |= EVENT_FL_FAILED; | |
4228 | len = 31; | |
4229 | } | |
f7d82350 SR |
4230 | |
4231 | memcpy(format, saveptr, len); | |
4232 | format[len] = 0; | |
4233 | ||
4234 | val = eval_num_arg(data, size, event, arg); | |
4235 | arg = arg->next; | |
4236 | ||
4237 | if (show_func) { | |
4238 | func = find_func(pevent, val); | |
4239 | if (func) { | |
4240 | trace_seq_puts(s, func->func); | |
4241 | if (show_func == 'F') | |
4242 | trace_seq_printf(s, | |
4243 | "+0x%llx", | |
4244 | val - func->addr); | |
4245 | break; | |
4246 | } | |
4247 | } | |
c5b35b73 WM |
4248 | if (pevent->long_size == 8 && ls && |
4249 | sizeof(long) != 8) { | |
f7d82350 SR |
4250 | char *p; |
4251 | ||
4252 | ls = 2; | |
4253 | /* make %l into %ll */ | |
4254 | p = strchr(format, 'l'); | |
4255 | if (p) | |
c5b35b73 | 4256 | memmove(p+1, p, strlen(p)+1); |
f7d82350 SR |
4257 | else if (strcmp(format, "%p") == 0) |
4258 | strcpy(format, "0x%llx"); | |
4259 | } | |
4260 | switch (ls) { | |
4261 | case -2: | |
4262 | if (len_as_arg) | |
4263 | trace_seq_printf(s, format, len_arg, (char)val); | |
4264 | else | |
4265 | trace_seq_printf(s, format, (char)val); | |
4266 | break; | |
4267 | case -1: | |
4268 | if (len_as_arg) | |
4269 | trace_seq_printf(s, format, len_arg, (short)val); | |
4270 | else | |
4271 | trace_seq_printf(s, format, (short)val); | |
4272 | break; | |
4273 | case 0: | |
4274 | if (len_as_arg) | |
4275 | trace_seq_printf(s, format, len_arg, (int)val); | |
4276 | else | |
4277 | trace_seq_printf(s, format, (int)val); | |
4278 | break; | |
4279 | case 1: | |
4280 | if (len_as_arg) | |
4281 | trace_seq_printf(s, format, len_arg, (long)val); | |
4282 | else | |
4283 | trace_seq_printf(s, format, (long)val); | |
4284 | break; | |
4285 | case 2: | |
4286 | if (len_as_arg) | |
4287 | trace_seq_printf(s, format, len_arg, | |
4288 | (long long)val); | |
4289 | else | |
4290 | trace_seq_printf(s, format, (long long)val); | |
4291 | break; | |
4292 | default: | |
245c5a18 NK |
4293 | do_warning("bad count (%d)", ls); |
4294 | event->flags |= EVENT_FL_FAILED; | |
f7d82350 SR |
4295 | } |
4296 | break; | |
4297 | case 's': | |
245c5a18 NK |
4298 | if (!arg) { |
4299 | do_warning("no matching argument"); | |
4300 | event->flags |= EVENT_FL_FAILED; | |
4301 | goto out_failed; | |
4302 | } | |
f7d82350 SR |
4303 | |
4304 | len = ((unsigned long)ptr + 1) - | |
4305 | (unsigned long)saveptr; | |
4306 | ||
4307 | /* should never happen */ | |
245c5a18 NK |
4308 | if (len > 31) { |
4309 | do_warning("bad format!"); | |
4310 | event->flags |= EVENT_FL_FAILED; | |
4311 | len = 31; | |
4312 | } | |
f7d82350 SR |
4313 | |
4314 | memcpy(format, saveptr, len); | |
4315 | format[len] = 0; | |
4316 | if (!len_as_arg) | |
4317 | len_arg = -1; | |
12e55569 SR |
4318 | /* Use helper trace_seq */ |
4319 | trace_seq_init(&p); | |
4320 | print_str_arg(&p, data, size, event, | |
f7d82350 | 4321 | format, len_arg, arg); |
12e55569 SR |
4322 | trace_seq_terminate(&p); |
4323 | trace_seq_puts(s, p.buffer); | |
f7d82350 SR |
4324 | arg = arg->next; |
4325 | break; | |
4326 | default: | |
4327 | trace_seq_printf(s, ">%c<", *ptr); | |
4328 | ||
4329 | } | |
4330 | } else | |
4331 | trace_seq_putc(s, *ptr); | |
4332 | } | |
4333 | ||
245c5a18 NK |
4334 | if (event->flags & EVENT_FL_FAILED) { |
4335 | out_failed: | |
4336 | trace_seq_printf(s, "[FAILED TO PARSE]"); | |
4337 | } | |
4338 | ||
f7d82350 SR |
4339 | if (args) { |
4340 | free_args(args); | |
4341 | free(bprint_fmt); | |
4342 | } | |
4343 | } | |
4344 | ||
4345 | /** | |
4346 | * pevent_data_lat_fmt - parse the data for the latency format | |
4347 | * @pevent: a handle to the pevent | |
4348 | * @s: the trace_seq to write to | |
16e6b8fd | 4349 | * @record: the record to read from |
f7d82350 SR |
4350 | * |
4351 | * This parses out the Latency format (interrupts disabled, | |
4352 | * need rescheduling, in hard/soft interrupt, preempt count | |
4353 | * and lock depth) and places it into the trace_seq. | |
4354 | */ | |
4355 | void pevent_data_lat_fmt(struct pevent *pevent, | |
1c698186 | 4356 | struct trace_seq *s, struct pevent_record *record) |
f7d82350 SR |
4357 | { |
4358 | static int check_lock_depth = 1; | |
0866a97e | 4359 | static int check_migrate_disable = 1; |
f7d82350 | 4360 | static int lock_depth_exists; |
0866a97e | 4361 | static int migrate_disable_exists; |
f7d82350 SR |
4362 | unsigned int lat_flags; |
4363 | unsigned int pc; | |
4364 | int lock_depth; | |
0866a97e | 4365 | int migrate_disable; |
f7d82350 SR |
4366 | int hardirq; |
4367 | int softirq; | |
4368 | void *data = record->data; | |
4369 | ||
4370 | lat_flags = parse_common_flags(pevent, data); | |
4371 | pc = parse_common_pc(pevent, data); | |
4372 | /* lock_depth may not always exist */ | |
f7d82350 SR |
4373 | if (lock_depth_exists) |
4374 | lock_depth = parse_common_lock_depth(pevent, data); | |
0866a97e SR |
4375 | else if (check_lock_depth) { |
4376 | lock_depth = parse_common_lock_depth(pevent, data); | |
4377 | if (lock_depth < 0) | |
4378 | check_lock_depth = 0; | |
4379 | else | |
4380 | lock_depth_exists = 1; | |
4381 | } | |
4382 | ||
4383 | /* migrate_disable may not always exist */ | |
4384 | if (migrate_disable_exists) | |
4385 | migrate_disable = parse_common_migrate_disable(pevent, data); | |
4386 | else if (check_migrate_disable) { | |
4387 | migrate_disable = parse_common_migrate_disable(pevent, data); | |
4388 | if (migrate_disable < 0) | |
4389 | check_migrate_disable = 0; | |
4390 | else | |
4391 | migrate_disable_exists = 1; | |
4392 | } | |
f7d82350 SR |
4393 | |
4394 | hardirq = lat_flags & TRACE_FLAG_HARDIRQ; | |
4395 | softirq = lat_flags & TRACE_FLAG_SOFTIRQ; | |
4396 | ||
4397 | trace_seq_printf(s, "%c%c%c", | |
4398 | (lat_flags & TRACE_FLAG_IRQS_OFF) ? 'd' : | |
4399 | (lat_flags & TRACE_FLAG_IRQS_NOSUPPORT) ? | |
4400 | 'X' : '.', | |
4401 | (lat_flags & TRACE_FLAG_NEED_RESCHED) ? | |
4402 | 'N' : '.', | |
4403 | (hardirq && softirq) ? 'H' : | |
4404 | hardirq ? 'h' : softirq ? 's' : '.'); | |
4405 | ||
4406 | if (pc) | |
4407 | trace_seq_printf(s, "%x", pc); | |
4408 | else | |
4409 | trace_seq_putc(s, '.'); | |
4410 | ||
0866a97e SR |
4411 | if (migrate_disable_exists) { |
4412 | if (migrate_disable < 0) | |
4413 | trace_seq_putc(s, '.'); | |
4414 | else | |
4415 | trace_seq_printf(s, "%d", migrate_disable); | |
4416 | } | |
4417 | ||
f7d82350 SR |
4418 | if (lock_depth_exists) { |
4419 | if (lock_depth < 0) | |
4420 | trace_seq_putc(s, '.'); | |
4421 | else | |
4422 | trace_seq_printf(s, "%d", lock_depth); | |
4423 | } | |
4424 | ||
4425 | trace_seq_terminate(s); | |
4426 | } | |
4427 | ||
4428 | /** | |
4429 | * pevent_data_type - parse out the given event type | |
4430 | * @pevent: a handle to the pevent | |
4431 | * @rec: the record to read from | |
4432 | * | |
4433 | * This returns the event id from the @rec. | |
4434 | */ | |
1c698186 | 4435 | int pevent_data_type(struct pevent *pevent, struct pevent_record *rec) |
f7d82350 SR |
4436 | { |
4437 | return trace_parse_common_type(pevent, rec->data); | |
4438 | } | |
4439 | ||
4440 | /** | |
4441 | * pevent_data_event_from_type - find the event by a given type | |
4442 | * @pevent: a handle to the pevent | |
4443 | * @type: the type of the event. | |
4444 | * | |
4445 | * This returns the event form a given @type; | |
4446 | */ | |
4447 | struct event_format *pevent_data_event_from_type(struct pevent *pevent, int type) | |
4448 | { | |
4449 | return pevent_find_event(pevent, type); | |
4450 | } | |
4451 | ||
4452 | /** | |
4453 | * pevent_data_pid - parse the PID from raw data | |
4454 | * @pevent: a handle to the pevent | |
4455 | * @rec: the record to parse | |
4456 | * | |
4457 | * This returns the PID from a raw data. | |
4458 | */ | |
1c698186 | 4459 | int pevent_data_pid(struct pevent *pevent, struct pevent_record *rec) |
f7d82350 SR |
4460 | { |
4461 | return parse_common_pid(pevent, rec->data); | |
4462 | } | |
4463 | ||
4464 | /** | |
4465 | * pevent_data_comm_from_pid - return the command line from PID | |
4466 | * @pevent: a handle to the pevent | |
4467 | * @pid: the PID of the task to search for | |
4468 | * | |
4469 | * This returns a pointer to the command line that has the given | |
4470 | * @pid. | |
4471 | */ | |
4472 | const char *pevent_data_comm_from_pid(struct pevent *pevent, int pid) | |
4473 | { | |
4474 | const char *comm; | |
4475 | ||
4476 | comm = find_cmdline(pevent, pid); | |
4477 | return comm; | |
4478 | } | |
4479 | ||
4480 | /** | |
4481 | * pevent_data_comm_from_pid - parse the data into the print format | |
4482 | * @s: the trace_seq to write to | |
4483 | * @event: the handle to the event | |
16e6b8fd | 4484 | * @record: the record to read from |
f7d82350 SR |
4485 | * |
4486 | * This parses the raw @data using the given @event information and | |
4487 | * writes the print format into the trace_seq. | |
4488 | */ | |
4489 | void pevent_event_info(struct trace_seq *s, struct event_format *event, | |
1c698186 | 4490 | struct pevent_record *record) |
f7d82350 SR |
4491 | { |
4492 | int print_pretty = 1; | |
4493 | ||
c6c2b960 | 4494 | if (event->pevent->print_raw || (event->flags & EVENT_FL_PRINTRAW)) |
f7d82350 SR |
4495 | print_event_fields(s, record->data, record->size, event); |
4496 | else { | |
4497 | ||
c6c2b960 | 4498 | if (event->handler && !(event->flags & EVENT_FL_NOHANDLE)) |
f7d82350 SR |
4499 | print_pretty = event->handler(s, record, event, |
4500 | event->context); | |
4501 | ||
4502 | if (print_pretty) | |
4503 | pretty_print(s, record->data, record->size, event); | |
4504 | } | |
4505 | ||
4506 | trace_seq_terminate(s); | |
4507 | } | |
4508 | ||
1b372ca5 YY |
4509 | static bool is_timestamp_in_us(char *trace_clock, bool use_trace_clock) |
4510 | { | |
4511 | if (!use_trace_clock) | |
4512 | return true; | |
4513 | ||
4514 | if (!strcmp(trace_clock, "local") || !strcmp(trace_clock, "global") | |
4515 | || !strcmp(trace_clock, "uptime") || !strcmp(trace_clock, "perf")) | |
4516 | return true; | |
4517 | ||
4518 | /* trace_clock is setting in tsc or counter mode */ | |
4519 | return false; | |
4520 | } | |
4521 | ||
f7d82350 | 4522 | void pevent_print_event(struct pevent *pevent, struct trace_seq *s, |
1b372ca5 | 4523 | struct pevent_record *record, bool use_trace_clock) |
f7d82350 | 4524 | { |
27f94d52 | 4525 | static const char *spaces = " "; /* 20 spaces */ |
f7d82350 SR |
4526 | struct event_format *event; |
4527 | unsigned long secs; | |
4528 | unsigned long usecs; | |
4dc1024a | 4529 | unsigned long nsecs; |
f7d82350 SR |
4530 | const char *comm; |
4531 | void *data = record->data; | |
4532 | int type; | |
4533 | int pid; | |
4534 | int len; | |
4dc1024a | 4535 | int p; |
1b372ca5 | 4536 | bool use_usec_format; |
f7d82350 | 4537 | |
1b372ca5 YY |
4538 | use_usec_format = is_timestamp_in_us(pevent->trace_clock, |
4539 | use_trace_clock); | |
4540 | if (use_usec_format) { | |
4541 | secs = record->ts / NSECS_PER_SEC; | |
4542 | nsecs = record->ts - secs * NSECS_PER_SEC; | |
4543 | } | |
f7d82350 SR |
4544 | |
4545 | if (record->size < 0) { | |
4546 | do_warning("ug! negative record size %d", record->size); | |
4547 | return; | |
4548 | } | |
4549 | ||
4550 | type = trace_parse_common_type(pevent, data); | |
4551 | ||
4552 | event = pevent_find_event(pevent, type); | |
4553 | if (!event) { | |
4554 | do_warning("ug! no event found for type %d", type); | |
4555 | return; | |
4556 | } | |
4557 | ||
4558 | pid = parse_common_pid(pevent, data); | |
4559 | comm = find_cmdline(pevent, pid); | |
4560 | ||
4561 | if (pevent->latency_format) { | |
4562 | trace_seq_printf(s, "%8.8s-%-5d %3d", | |
4563 | comm, pid, record->cpu); | |
4564 | pevent_data_lat_fmt(pevent, s, record); | |
4565 | } else | |
4566 | trace_seq_printf(s, "%16s-%-5d [%03d]", comm, pid, record->cpu); | |
4567 | ||
1b372ca5 YY |
4568 | if (use_usec_format) { |
4569 | if (pevent->flags & PEVENT_NSEC_OUTPUT) { | |
4570 | usecs = nsecs; | |
4571 | p = 9; | |
4572 | } else { | |
4573 | usecs = (nsecs + 500) / NSECS_PER_USEC; | |
4574 | p = 6; | |
4575 | } | |
4dc1024a | 4576 | |
1b372ca5 YY |
4577 | trace_seq_printf(s, " %5lu.%0*lu: %s: ", |
4578 | secs, p, usecs, event->name); | |
4579 | } else | |
4580 | trace_seq_printf(s, " %12llu: %s: ", | |
4581 | record->ts, event->name); | |
f7d82350 SR |
4582 | |
4583 | /* Space out the event names evenly. */ | |
4584 | len = strlen(event->name); | |
4585 | if (len < 20) | |
4586 | trace_seq_printf(s, "%.*s", 20 - len, spaces); | |
4587 | ||
4588 | pevent_event_info(s, event, record); | |
4589 | } | |
4590 | ||
4591 | static int events_id_cmp(const void *a, const void *b) | |
4592 | { | |
4593 | struct event_format * const * ea = a; | |
4594 | struct event_format * const * eb = b; | |
4595 | ||
4596 | if ((*ea)->id < (*eb)->id) | |
4597 | return -1; | |
4598 | ||
4599 | if ((*ea)->id > (*eb)->id) | |
4600 | return 1; | |
4601 | ||
4602 | return 0; | |
4603 | } | |
4604 | ||
4605 | static int events_name_cmp(const void *a, const void *b) | |
4606 | { | |
4607 | struct event_format * const * ea = a; | |
4608 | struct event_format * const * eb = b; | |
4609 | int res; | |
4610 | ||
4611 | res = strcmp((*ea)->name, (*eb)->name); | |
4612 | if (res) | |
4613 | return res; | |
4614 | ||
4615 | res = strcmp((*ea)->system, (*eb)->system); | |
4616 | if (res) | |
4617 | return res; | |
4618 | ||
4619 | return events_id_cmp(a, b); | |
4620 | } | |
4621 | ||
4622 | static int events_system_cmp(const void *a, const void *b) | |
4623 | { | |
4624 | struct event_format * const * ea = a; | |
4625 | struct event_format * const * eb = b; | |
4626 | int res; | |
4627 | ||
4628 | res = strcmp((*ea)->system, (*eb)->system); | |
4629 | if (res) | |
4630 | return res; | |
4631 | ||
4632 | res = strcmp((*ea)->name, (*eb)->name); | |
4633 | if (res) | |
4634 | return res; | |
4635 | ||
4636 | return events_id_cmp(a, b); | |
4637 | } | |
4638 | ||
4639 | struct event_format **pevent_list_events(struct pevent *pevent, enum event_sort_type sort_type) | |
4640 | { | |
4641 | struct event_format **events; | |
4642 | int (*sort)(const void *a, const void *b); | |
4643 | ||
4644 | events = pevent->sort_events; | |
4645 | ||
4646 | if (events && pevent->last_type == sort_type) | |
4647 | return events; | |
4648 | ||
4649 | if (!events) { | |
4650 | events = malloc(sizeof(*events) * (pevent->nr_events + 1)); | |
4651 | if (!events) | |
4652 | return NULL; | |
4653 | ||
4654 | memcpy(events, pevent->events, sizeof(*events) * pevent->nr_events); | |
4655 | events[pevent->nr_events] = NULL; | |
4656 | ||
4657 | pevent->sort_events = events; | |
4658 | ||
4659 | /* the internal events are sorted by id */ | |
4660 | if (sort_type == EVENT_SORT_ID) { | |
4661 | pevent->last_type = sort_type; | |
4662 | return events; | |
4663 | } | |
4664 | } | |
4665 | ||
4666 | switch (sort_type) { | |
4667 | case EVENT_SORT_ID: | |
4668 | sort = events_id_cmp; | |
4669 | break; | |
4670 | case EVENT_SORT_NAME: | |
4671 | sort = events_name_cmp; | |
4672 | break; | |
4673 | case EVENT_SORT_SYSTEM: | |
4674 | sort = events_system_cmp; | |
4675 | break; | |
4676 | default: | |
4677 | return events; | |
4678 | } | |
4679 | ||
4680 | qsort(events, pevent->nr_events, sizeof(*events), sort); | |
4681 | pevent->last_type = sort_type; | |
4682 | ||
4683 | return events; | |
4684 | } | |
4685 | ||
4686 | static struct format_field ** | |
4687 | get_event_fields(const char *type, const char *name, | |
4688 | int count, struct format_field *list) | |
4689 | { | |
4690 | struct format_field **fields; | |
4691 | struct format_field *field; | |
4692 | int i = 0; | |
4693 | ||
a6d2a61a ACM |
4694 | fields = malloc(sizeof(*fields) * (count + 1)); |
4695 | if (!fields) | |
4696 | return NULL; | |
4697 | ||
f7d82350 SR |
4698 | for (field = list; field; field = field->next) { |
4699 | fields[i++] = field; | |
4700 | if (i == count + 1) { | |
4701 | do_warning("event %s has more %s fields than specified", | |
4702 | name, type); | |
4703 | i--; | |
4704 | break; | |
4705 | } | |
4706 | } | |
4707 | ||
4708 | if (i != count) | |
4709 | do_warning("event %s has less %s fields than specified", | |
4710 | name, type); | |
4711 | ||
4712 | fields[i] = NULL; | |
4713 | ||
4714 | return fields; | |
4715 | } | |
4716 | ||
4717 | /** | |
4718 | * pevent_event_common_fields - return a list of common fields for an event | |
4719 | * @event: the event to return the common fields of. | |
4720 | * | |
4721 | * Returns an allocated array of fields. The last item in the array is NULL. | |
4722 | * The array must be freed with free(). | |
4723 | */ | |
4724 | struct format_field **pevent_event_common_fields(struct event_format *event) | |
4725 | { | |
4726 | return get_event_fields("common", event->name, | |
4727 | event->format.nr_common, | |
4728 | event->format.common_fields); | |
4729 | } | |
4730 | ||
4731 | /** | |
4732 | * pevent_event_fields - return a list of event specific fields for an event | |
4733 | * @event: the event to return the fields of. | |
4734 | * | |
4735 | * Returns an allocated array of fields. The last item in the array is NULL. | |
4736 | * The array must be freed with free(). | |
4737 | */ | |
4738 | struct format_field **pevent_event_fields(struct event_format *event) | |
4739 | { | |
4740 | return get_event_fields("event", event->name, | |
4741 | event->format.nr_fields, | |
4742 | event->format.fields); | |
4743 | } | |
4744 | ||
4745 | static void print_fields(struct trace_seq *s, struct print_flag_sym *field) | |
4746 | { | |
4747 | trace_seq_printf(s, "{ %s, %s }", field->value, field->str); | |
4748 | if (field->next) { | |
4749 | trace_seq_puts(s, ", "); | |
4750 | print_fields(s, field->next); | |
4751 | } | |
4752 | } | |
4753 | ||
4754 | /* for debugging */ | |
4755 | static void print_args(struct print_arg *args) | |
4756 | { | |
4757 | int print_paren = 1; | |
4758 | struct trace_seq s; | |
4759 | ||
4760 | switch (args->type) { | |
4761 | case PRINT_NULL: | |
4762 | printf("null"); | |
4763 | break; | |
4764 | case PRINT_ATOM: | |
4765 | printf("%s", args->atom.atom); | |
4766 | break; | |
4767 | case PRINT_FIELD: | |
4768 | printf("REC->%s", args->field.name); | |
4769 | break; | |
4770 | case PRINT_FLAGS: | |
4771 | printf("__print_flags("); | |
4772 | print_args(args->flags.field); | |
4773 | printf(", %s, ", args->flags.delim); | |
4774 | trace_seq_init(&s); | |
4775 | print_fields(&s, args->flags.flags); | |
4776 | trace_seq_do_printf(&s); | |
4777 | trace_seq_destroy(&s); | |
4778 | printf(")"); | |
4779 | break; | |
4780 | case PRINT_SYMBOL: | |
4781 | printf("__print_symbolic("); | |
4782 | print_args(args->symbol.field); | |
4783 | printf(", "); | |
4784 | trace_seq_init(&s); | |
4785 | print_fields(&s, args->symbol.symbols); | |
4786 | trace_seq_do_printf(&s); | |
4787 | trace_seq_destroy(&s); | |
4788 | printf(")"); | |
4789 | break; | |
e080e6f1 NK |
4790 | case PRINT_HEX: |
4791 | printf("__print_hex("); | |
4792 | print_args(args->hex.field); | |
4793 | printf(", "); | |
4794 | print_args(args->hex.size); | |
4795 | printf(")"); | |
4796 | break; | |
f7d82350 SR |
4797 | case PRINT_STRING: |
4798 | case PRINT_BSTRING: | |
4799 | printf("__get_str(%s)", args->string.string); | |
4800 | break; | |
4801 | case PRINT_TYPE: | |
4802 | printf("(%s)", args->typecast.type); | |
4803 | print_args(args->typecast.item); | |
4804 | break; | |
4805 | case PRINT_OP: | |
4806 | if (strcmp(args->op.op, ":") == 0) | |
4807 | print_paren = 0; | |
4808 | if (print_paren) | |
4809 | printf("("); | |
4810 | print_args(args->op.left); | |
4811 | printf(" %s ", args->op.op); | |
4812 | print_args(args->op.right); | |
4813 | if (print_paren) | |
4814 | printf(")"); | |
4815 | break; | |
4816 | default: | |
4817 | /* we should warn... */ | |
4818 | return; | |
4819 | } | |
4820 | if (args->next) { | |
4821 | printf("\n"); | |
4822 | print_args(args->next); | |
4823 | } | |
4824 | } | |
4825 | ||
4826 | static void parse_header_field(const char *field, | |
4827 | int *offset, int *size, int mandatory) | |
4828 | { | |
4829 | unsigned long long save_input_buf_ptr; | |
4830 | unsigned long long save_input_buf_siz; | |
4831 | char *token; | |
4832 | int type; | |
4833 | ||
4834 | save_input_buf_ptr = input_buf_ptr; | |
4835 | save_input_buf_siz = input_buf_siz; | |
4836 | ||
4837 | if (read_expected(EVENT_ITEM, "field") < 0) | |
4838 | return; | |
4839 | if (read_expected(EVENT_OP, ":") < 0) | |
4840 | return; | |
4841 | ||
4842 | /* type */ | |
4843 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
4844 | goto fail; | |
4845 | free_token(token); | |
4846 | ||
4847 | /* | |
4848 | * If this is not a mandatory field, then test it first. | |
4849 | */ | |
4850 | if (mandatory) { | |
4851 | if (read_expected(EVENT_ITEM, field) < 0) | |
4852 | return; | |
4853 | } else { | |
4854 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
4855 | goto fail; | |
4856 | if (strcmp(token, field) != 0) | |
4857 | goto discard; | |
4858 | free_token(token); | |
4859 | } | |
4860 | ||
4861 | if (read_expected(EVENT_OP, ";") < 0) | |
4862 | return; | |
4863 | if (read_expected(EVENT_ITEM, "offset") < 0) | |
4864 | return; | |
4865 | if (read_expected(EVENT_OP, ":") < 0) | |
4866 | return; | |
4867 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
4868 | goto fail; | |
4869 | *offset = atoi(token); | |
4870 | free_token(token); | |
4871 | if (read_expected(EVENT_OP, ";") < 0) | |
4872 | return; | |
4873 | if (read_expected(EVENT_ITEM, "size") < 0) | |
4874 | return; | |
4875 | if (read_expected(EVENT_OP, ":") < 0) | |
4876 | return; | |
4877 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
4878 | goto fail; | |
4879 | *size = atoi(token); | |
4880 | free_token(token); | |
4881 | if (read_expected(EVENT_OP, ";") < 0) | |
4882 | return; | |
4883 | type = read_token(&token); | |
4884 | if (type != EVENT_NEWLINE) { | |
4885 | /* newer versions of the kernel have a "signed" type */ | |
4886 | if (type != EVENT_ITEM) | |
4887 | goto fail; | |
4888 | ||
4889 | if (strcmp(token, "signed") != 0) | |
4890 | goto fail; | |
4891 | ||
4892 | free_token(token); | |
4893 | ||
4894 | if (read_expected(EVENT_OP, ":") < 0) | |
4895 | return; | |
4896 | ||
4897 | if (read_expect_type(EVENT_ITEM, &token)) | |
4898 | goto fail; | |
4899 | ||
4900 | free_token(token); | |
4901 | if (read_expected(EVENT_OP, ";") < 0) | |
4902 | return; | |
4903 | ||
4904 | if (read_expect_type(EVENT_NEWLINE, &token)) | |
4905 | goto fail; | |
4906 | } | |
4907 | fail: | |
4908 | free_token(token); | |
4909 | return; | |
4910 | ||
4911 | discard: | |
4912 | input_buf_ptr = save_input_buf_ptr; | |
4913 | input_buf_siz = save_input_buf_siz; | |
4914 | *offset = 0; | |
4915 | *size = 0; | |
4916 | free_token(token); | |
4917 | } | |
4918 | ||
4919 | /** | |
4920 | * pevent_parse_header_page - parse the data stored in the header page | |
4921 | * @pevent: the handle to the pevent | |
4922 | * @buf: the buffer storing the header page format string | |
4923 | * @size: the size of @buf | |
4924 | * @long_size: the long size to use if there is no header | |
4925 | * | |
4926 | * This parses the header page format for information on the | |
4927 | * ring buffer used. The @buf should be copied from | |
4928 | * | |
4929 | * /sys/kernel/debug/tracing/events/header_page | |
4930 | */ | |
4931 | int pevent_parse_header_page(struct pevent *pevent, char *buf, unsigned long size, | |
4932 | int long_size) | |
4933 | { | |
4934 | int ignore; | |
4935 | ||
4936 | if (!size) { | |
4937 | /* | |
4938 | * Old kernels did not have header page info. | |
4939 | * Sorry but we just use what we find here in user space. | |
4940 | */ | |
4941 | pevent->header_page_ts_size = sizeof(long long); | |
4942 | pevent->header_page_size_size = long_size; | |
4943 | pevent->header_page_data_offset = sizeof(long long) + long_size; | |
4944 | pevent->old_format = 1; | |
4945 | return -1; | |
4946 | } | |
4947 | init_input_buf(buf, size); | |
4948 | ||
4949 | parse_header_field("timestamp", &pevent->header_page_ts_offset, | |
4950 | &pevent->header_page_ts_size, 1); | |
4951 | parse_header_field("commit", &pevent->header_page_size_offset, | |
4952 | &pevent->header_page_size_size, 1); | |
4953 | parse_header_field("overwrite", &pevent->header_page_overwrite, | |
4954 | &ignore, 0); | |
4955 | parse_header_field("data", &pevent->header_page_data_offset, | |
4956 | &pevent->header_page_data_size, 1); | |
4957 | ||
4958 | return 0; | |
4959 | } | |
4960 | ||
4961 | static int event_matches(struct event_format *event, | |
4962 | int id, const char *sys_name, | |
4963 | const char *event_name) | |
4964 | { | |
4965 | if (id >= 0 && id != event->id) | |
4966 | return 0; | |
4967 | ||
4968 | if (event_name && (strcmp(event_name, event->name) != 0)) | |
4969 | return 0; | |
4970 | ||
4971 | if (sys_name && (strcmp(sys_name, event->system) != 0)) | |
4972 | return 0; | |
4973 | ||
4974 | return 1; | |
4975 | } | |
4976 | ||
4977 | static void free_handler(struct event_handler *handle) | |
4978 | { | |
4979 | free((void *)handle->sys_name); | |
4980 | free((void *)handle->event_name); | |
4981 | free(handle); | |
4982 | } | |
4983 | ||
4984 | static int find_event_handle(struct pevent *pevent, struct event_format *event) | |
4985 | { | |
4986 | struct event_handler *handle, **next; | |
4987 | ||
4988 | for (next = &pevent->handlers; *next; | |
4989 | next = &(*next)->next) { | |
4990 | handle = *next; | |
4991 | if (event_matches(event, handle->id, | |
4992 | handle->sys_name, | |
4993 | handle->event_name)) | |
4994 | break; | |
4995 | } | |
4996 | ||
4997 | if (!(*next)) | |
4998 | return 0; | |
4999 | ||
5000 | pr_stat("overriding event (%d) %s:%s with new print handler", | |
5001 | event->id, event->system, event->name); | |
5002 | ||
5003 | event->handler = handle->func; | |
5004 | event->context = handle->context; | |
5005 | ||
5006 | *next = handle->next; | |
5007 | free_handler(handle); | |
5008 | ||
5009 | return 1; | |
5010 | } | |
5011 | ||
5012 | /** | |
2b29175d | 5013 | * __pevent_parse_format - parse the event format |
f7d82350 SR |
5014 | * @buf: the buffer storing the event format string |
5015 | * @size: the size of @buf | |
5016 | * @sys: the system the event belongs to | |
5017 | * | |
5018 | * This parses the event format and creates an event structure | |
5019 | * to quickly parse raw data for a given event. | |
5020 | * | |
5021 | * These files currently come from: | |
5022 | * | |
5023 | * /sys/kernel/debug/tracing/events/.../.../format | |
5024 | */ | |
2b29175d ACM |
5025 | enum pevent_errno __pevent_parse_format(struct event_format **eventp, |
5026 | struct pevent *pevent, const char *buf, | |
5027 | unsigned long size, const char *sys) | |
f7d82350 SR |
5028 | { |
5029 | struct event_format *event; | |
5030 | int ret; | |
5031 | ||
5032 | init_input_buf(buf, size); | |
5033 | ||
2b29175d | 5034 | *eventp = event = alloc_event(); |
f7d82350 | 5035 | if (!event) |
bffddffd | 5036 | return PEVENT_ERRNO__MEM_ALLOC_FAILED; |
f7d82350 SR |
5037 | |
5038 | event->name = event_read_name(); | |
5039 | if (!event->name) { | |
5040 | /* Bad event? */ | |
bffddffd NK |
5041 | ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; |
5042 | goto event_alloc_failed; | |
f7d82350 SR |
5043 | } |
5044 | ||
5045 | if (strcmp(sys, "ftrace") == 0) { | |
f7d82350 SR |
5046 | event->flags |= EVENT_FL_ISFTRACE; |
5047 | ||
5048 | if (strcmp(event->name, "bprint") == 0) | |
5049 | event->flags |= EVENT_FL_ISBPRINT; | |
5050 | } | |
5051 | ||
5052 | event->id = event_read_id(); | |
bffddffd NK |
5053 | if (event->id < 0) { |
5054 | ret = PEVENT_ERRNO__READ_ID_FAILED; | |
5055 | /* | |
5056 | * This isn't an allocation error actually. | |
5057 | * But as the ID is critical, just bail out. | |
5058 | */ | |
5059 | goto event_alloc_failed; | |
5060 | } | |
f7d82350 SR |
5061 | |
5062 | event->system = strdup(sys); | |
bffddffd NK |
5063 | if (!event->system) { |
5064 | ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
5065 | goto event_alloc_failed; | |
5066 | } | |
f7d82350 | 5067 | |
101782ea SR |
5068 | /* Add pevent to event so that it can be referenced */ |
5069 | event->pevent = pevent; | |
5070 | ||
f7d82350 SR |
5071 | ret = event_read_format(event); |
5072 | if (ret < 0) { | |
bffddffd NK |
5073 | ret = PEVENT_ERRNO__READ_FORMAT_FAILED; |
5074 | goto event_parse_failed; | |
f7d82350 SR |
5075 | } |
5076 | ||
5077 | /* | |
5078 | * If the event has an override, don't print warnings if the event | |
5079 | * print format fails to parse. | |
5080 | */ | |
2b29175d | 5081 | if (pevent && find_event_handle(pevent, event)) |
f7d82350 SR |
5082 | show_warning = 0; |
5083 | ||
5084 | ret = event_read_print(event); | |
2b29175d ACM |
5085 | show_warning = 1; |
5086 | ||
f7d82350 | 5087 | if (ret < 0) { |
bffddffd NK |
5088 | ret = PEVENT_ERRNO__READ_PRINT_FAILED; |
5089 | goto event_parse_failed; | |
f7d82350 | 5090 | } |
f7d82350 SR |
5091 | |
5092 | if (!ret && (event->flags & EVENT_FL_ISFTRACE)) { | |
5093 | struct format_field *field; | |
5094 | struct print_arg *arg, **list; | |
5095 | ||
5096 | /* old ftrace had no args */ | |
f7d82350 SR |
5097 | list = &event->print_fmt.args; |
5098 | for (field = event->format.fields; field; field = field->next) { | |
5099 | arg = alloc_arg(); | |
b1ac754b NK |
5100 | if (!arg) { |
5101 | event->flags |= EVENT_FL_FAILED; | |
5102 | return PEVENT_ERRNO__OLD_FTRACE_ARG_FAILED; | |
5103 | } | |
f7d82350 SR |
5104 | arg->type = PRINT_FIELD; |
5105 | arg->field.name = strdup(field->name); | |
ca63858e | 5106 | if (!arg->field.name) { |
4b5632bc | 5107 | event->flags |= EVENT_FL_FAILED; |
fd34f0b2 | 5108 | free_arg(arg); |
bffddffd | 5109 | return PEVENT_ERRNO__OLD_FTRACE_ARG_FAILED; |
ca63858e | 5110 | } |
f7d82350 | 5111 | arg->field.field = field; |
fd34f0b2 NK |
5112 | *list = arg; |
5113 | list = &arg->next; | |
f7d82350 SR |
5114 | } |
5115 | return 0; | |
5116 | } | |
5117 | ||
f7d82350 SR |
5118 | return 0; |
5119 | ||
bffddffd | 5120 | event_parse_failed: |
f7d82350 | 5121 | event->flags |= EVENT_FL_FAILED; |
bffddffd NK |
5122 | return ret; |
5123 | ||
5124 | event_alloc_failed: | |
2b29175d ACM |
5125 | free(event->system); |
5126 | free(event->name); | |
5127 | free(event); | |
5128 | *eventp = NULL; | |
5129 | return ret; | |
5130 | } | |
5131 | ||
71ad9583 JO |
5132 | static enum pevent_errno |
5133 | __pevent_parse_event(struct pevent *pevent, | |
5134 | struct event_format **eventp, | |
5135 | const char *buf, unsigned long size, | |
5136 | const char *sys) | |
5137 | { | |
5138 | int ret = __pevent_parse_format(eventp, pevent, buf, size, sys); | |
5139 | struct event_format *event = *eventp; | |
5140 | ||
5141 | if (event == NULL) | |
5142 | return ret; | |
5143 | ||
5144 | if (pevent && add_event(pevent, event)) { | |
5145 | ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
5146 | goto event_add_failed; | |
5147 | } | |
5148 | ||
5149 | #define PRINT_ARGS 0 | |
5150 | if (PRINT_ARGS && event->print_fmt.args) | |
5151 | print_args(event->print_fmt.args); | |
5152 | ||
5153 | return 0; | |
5154 | ||
5155 | event_add_failed: | |
5156 | pevent_free_format(event); | |
5157 | return ret; | |
5158 | } | |
5159 | ||
2b29175d ACM |
5160 | /** |
5161 | * pevent_parse_format - parse the event format | |
71ad9583 JO |
5162 | * @pevent: the handle to the pevent |
5163 | * @eventp: returned format | |
2b29175d ACM |
5164 | * @buf: the buffer storing the event format string |
5165 | * @size: the size of @buf | |
5166 | * @sys: the system the event belongs to | |
5167 | * | |
5168 | * This parses the event format and creates an event structure | |
5169 | * to quickly parse raw data for a given event. | |
5170 | * | |
5171 | * These files currently come from: | |
5172 | * | |
5173 | * /sys/kernel/debug/tracing/events/.../.../format | |
5174 | */ | |
71ad9583 JO |
5175 | enum pevent_errno pevent_parse_format(struct pevent *pevent, |
5176 | struct event_format **eventp, | |
5177 | const char *buf, | |
2b29175d ACM |
5178 | unsigned long size, const char *sys) |
5179 | { | |
71ad9583 | 5180 | return __pevent_parse_event(pevent, eventp, buf, size, sys); |
2b29175d ACM |
5181 | } |
5182 | ||
5183 | /** | |
5184 | * pevent_parse_event - parse the event format | |
5185 | * @pevent: the handle to the pevent | |
5186 | * @buf: the buffer storing the event format string | |
5187 | * @size: the size of @buf | |
5188 | * @sys: the system the event belongs to | |
5189 | * | |
5190 | * This parses the event format and creates an event structure | |
5191 | * to quickly parse raw data for a given event. | |
5192 | * | |
5193 | * These files currently come from: | |
5194 | * | |
5195 | * /sys/kernel/debug/tracing/events/.../.../format | |
5196 | */ | |
5197 | enum pevent_errno pevent_parse_event(struct pevent *pevent, const char *buf, | |
5198 | unsigned long size, const char *sys) | |
5199 | { | |
5200 | struct event_format *event = NULL; | |
71ad9583 | 5201 | return __pevent_parse_event(pevent, &event, buf, size, sys); |
f7d82350 SR |
5202 | } |
5203 | ||
2f197b9d NK |
5204 | #undef _PE |
5205 | #define _PE(code, str) str | |
5206 | static const char * const pevent_error_str[] = { | |
5207 | PEVENT_ERRORS | |
5208 | }; | |
5209 | #undef _PE | |
5210 | ||
ca383a4d ACM |
5211 | int pevent_strerror(struct pevent *pevent __maybe_unused, |
5212 | enum pevent_errno errnum, char *buf, size_t buflen) | |
2f197b9d NK |
5213 | { |
5214 | int idx; | |
5215 | const char *msg; | |
5216 | ||
5217 | if (errnum >= 0) { | |
e1aa7c30 NK |
5218 | msg = strerror_r(errnum, buf, buflen); |
5219 | if (msg != buf) { | |
5220 | size_t len = strlen(msg); | |
9612ef67 IT |
5221 | memcpy(buf, msg, min(buflen - 1, len)); |
5222 | *(buf + min(buflen - 1, len)) = '\0'; | |
e1aa7c30 | 5223 | } |
2f197b9d NK |
5224 | return 0; |
5225 | } | |
5226 | ||
5227 | if (errnum <= __PEVENT_ERRNO__START || | |
5228 | errnum >= __PEVENT_ERRNO__END) | |
5229 | return -1; | |
5230 | ||
f63fe79f | 5231 | idx = errnum - __PEVENT_ERRNO__START - 1; |
2f197b9d | 5232 | msg = pevent_error_str[idx]; |
bf19b82e | 5233 | snprintf(buf, buflen, "%s", msg); |
2f197b9d NK |
5234 | |
5235 | return 0; | |
5236 | } | |
5237 | ||
f7d82350 | 5238 | int get_field_val(struct trace_seq *s, struct format_field *field, |
1c698186 | 5239 | const char *name, struct pevent_record *record, |
f7d82350 SR |
5240 | unsigned long long *val, int err) |
5241 | { | |
5242 | if (!field) { | |
5243 | if (err) | |
5244 | trace_seq_printf(s, "<CANT FIND FIELD %s>", name); | |
5245 | return -1; | |
5246 | } | |
5247 | ||
5248 | if (pevent_read_number_field(field, record->data, val)) { | |
5249 | if (err) | |
5250 | trace_seq_printf(s, " %s=INVALID", name); | |
5251 | return -1; | |
5252 | } | |
5253 | ||
5254 | return 0; | |
5255 | } | |
5256 | ||
5257 | /** | |
5258 | * pevent_get_field_raw - return the raw pointer into the data field | |
5259 | * @s: The seq to print to on error | |
5260 | * @event: the event that the field is for | |
5261 | * @name: The name of the field | |
5262 | * @record: The record with the field name. | |
5263 | * @len: place to store the field length. | |
5264 | * @err: print default error if failed. | |
5265 | * | |
5266 | * Returns a pointer into record->data of the field and places | |
5267 | * the length of the field in @len. | |
5268 | * | |
5269 | * On failure, it returns NULL. | |
5270 | */ | |
5271 | void *pevent_get_field_raw(struct trace_seq *s, struct event_format *event, | |
1c698186 | 5272 | const char *name, struct pevent_record *record, |
f7d82350 SR |
5273 | int *len, int err) |
5274 | { | |
5275 | struct format_field *field; | |
5276 | void *data = record->data; | |
5277 | unsigned offset; | |
5278 | int dummy; | |
5279 | ||
5280 | if (!event) | |
5281 | return NULL; | |
5282 | ||
5283 | field = pevent_find_field(event, name); | |
5284 | ||
5285 | if (!field) { | |
5286 | if (err) | |
5287 | trace_seq_printf(s, "<CANT FIND FIELD %s>", name); | |
5288 | return NULL; | |
5289 | } | |
5290 | ||
5291 | /* Allow @len to be NULL */ | |
5292 | if (!len) | |
5293 | len = &dummy; | |
5294 | ||
5295 | offset = field->offset; | |
5296 | if (field->flags & FIELD_IS_DYNAMIC) { | |
5297 | offset = pevent_read_number(event->pevent, | |
5298 | data + offset, field->size); | |
5299 | *len = offset >> 16; | |
5300 | offset &= 0xffff; | |
5301 | } else | |
5302 | *len = field->size; | |
5303 | ||
5304 | return data + offset; | |
5305 | } | |
5306 | ||
5307 | /** | |
5308 | * pevent_get_field_val - find a field and return its value | |
5309 | * @s: The seq to print to on error | |
5310 | * @event: the event that the field is for | |
5311 | * @name: The name of the field | |
5312 | * @record: The record with the field name. | |
5313 | * @val: place to store the value of the field. | |
5314 | * @err: print default error if failed. | |
5315 | * | |
5316 | * Returns 0 on success -1 on field not found. | |
5317 | */ | |
5318 | int pevent_get_field_val(struct trace_seq *s, struct event_format *event, | |
1c698186 | 5319 | const char *name, struct pevent_record *record, |
f7d82350 SR |
5320 | unsigned long long *val, int err) |
5321 | { | |
5322 | struct format_field *field; | |
5323 | ||
5324 | if (!event) | |
5325 | return -1; | |
5326 | ||
5327 | field = pevent_find_field(event, name); | |
5328 | ||
5329 | return get_field_val(s, field, name, record, val, err); | |
5330 | } | |
5331 | ||
5332 | /** | |
5333 | * pevent_get_common_field_val - find a common field and return its value | |
5334 | * @s: The seq to print to on error | |
5335 | * @event: the event that the field is for | |
5336 | * @name: The name of the field | |
5337 | * @record: The record with the field name. | |
5338 | * @val: place to store the value of the field. | |
5339 | * @err: print default error if failed. | |
5340 | * | |
5341 | * Returns 0 on success -1 on field not found. | |
5342 | */ | |
5343 | int pevent_get_common_field_val(struct trace_seq *s, struct event_format *event, | |
1c698186 | 5344 | const char *name, struct pevent_record *record, |
f7d82350 SR |
5345 | unsigned long long *val, int err) |
5346 | { | |
5347 | struct format_field *field; | |
5348 | ||
5349 | if (!event) | |
5350 | return -1; | |
5351 | ||
5352 | field = pevent_find_common_field(event, name); | |
5353 | ||
5354 | return get_field_val(s, field, name, record, val, err); | |
5355 | } | |
5356 | ||
5357 | /** | |
5358 | * pevent_get_any_field_val - find a any field and return its value | |
5359 | * @s: The seq to print to on error | |
5360 | * @event: the event that the field is for | |
5361 | * @name: The name of the field | |
5362 | * @record: The record with the field name. | |
5363 | * @val: place to store the value of the field. | |
5364 | * @err: print default error if failed. | |
5365 | * | |
5366 | * Returns 0 on success -1 on field not found. | |
5367 | */ | |
5368 | int pevent_get_any_field_val(struct trace_seq *s, struct event_format *event, | |
1c698186 | 5369 | const char *name, struct pevent_record *record, |
f7d82350 SR |
5370 | unsigned long long *val, int err) |
5371 | { | |
5372 | struct format_field *field; | |
5373 | ||
5374 | if (!event) | |
5375 | return -1; | |
5376 | ||
5377 | field = pevent_find_any_field(event, name); | |
5378 | ||
5379 | return get_field_val(s, field, name, record, val, err); | |
5380 | } | |
5381 | ||
5382 | /** | |
5383 | * pevent_print_num_field - print a field and a format | |
5384 | * @s: The seq to print to | |
5385 | * @fmt: The printf format to print the field with. | |
5386 | * @event: the event that the field is for | |
5387 | * @name: The name of the field | |
5388 | * @record: The record with the field name. | |
5389 | * @err: print default error if failed. | |
5390 | * | |
16e6b8fd | 5391 | * Returns: 0 on success, -1 field not found, or 1 if buffer is full. |
f7d82350 SR |
5392 | */ |
5393 | int pevent_print_num_field(struct trace_seq *s, const char *fmt, | |
5394 | struct event_format *event, const char *name, | |
1c698186 | 5395 | struct pevent_record *record, int err) |
f7d82350 SR |
5396 | { |
5397 | struct format_field *field = pevent_find_field(event, name); | |
5398 | unsigned long long val; | |
5399 | ||
5400 | if (!field) | |
5401 | goto failed; | |
5402 | ||
5403 | if (pevent_read_number_field(field, record->data, &val)) | |
5404 | goto failed; | |
5405 | ||
5406 | return trace_seq_printf(s, fmt, val); | |
5407 | ||
5408 | failed: | |
5409 | if (err) | |
5410 | trace_seq_printf(s, "CAN'T FIND FIELD \"%s\"", name); | |
5411 | return -1; | |
5412 | } | |
5413 | ||
6d862b8c SR |
5414 | /** |
5415 | * pevent_print_func_field - print a field and a format for function pointers | |
5416 | * @s: The seq to print to | |
5417 | * @fmt: The printf format to print the field with. | |
5418 | * @event: the event that the field is for | |
5419 | * @name: The name of the field | |
5420 | * @record: The record with the field name. | |
5421 | * @err: print default error if failed. | |
5422 | * | |
5423 | * Returns: 0 on success, -1 field not found, or 1 if buffer is full. | |
5424 | */ | |
5425 | int pevent_print_func_field(struct trace_seq *s, const char *fmt, | |
5426 | struct event_format *event, const char *name, | |
5427 | struct pevent_record *record, int err) | |
5428 | { | |
5429 | struct format_field *field = pevent_find_field(event, name); | |
5430 | struct pevent *pevent = event->pevent; | |
5431 | unsigned long long val; | |
5432 | struct func_map *func; | |
5433 | char tmp[128]; | |
5434 | ||
5435 | if (!field) | |
5436 | goto failed; | |
5437 | ||
5438 | if (pevent_read_number_field(field, record->data, &val)) | |
5439 | goto failed; | |
5440 | ||
5441 | func = find_func(pevent, val); | |
5442 | ||
5443 | if (func) | |
5444 | snprintf(tmp, 128, "%s/0x%llx", func->func, func->addr - val); | |
5445 | else | |
5446 | sprintf(tmp, "0x%08llx", val); | |
5447 | ||
5448 | return trace_seq_printf(s, fmt, tmp); | |
5449 | ||
5450 | failed: | |
5451 | if (err) | |
5452 | trace_seq_printf(s, "CAN'T FIND FIELD \"%s\"", name); | |
5453 | return -1; | |
5454 | } | |
5455 | ||
f7d82350 SR |
5456 | static void free_func_handle(struct pevent_function_handler *func) |
5457 | { | |
5458 | struct pevent_func_params *params; | |
5459 | ||
5460 | free(func->name); | |
5461 | ||
5462 | while (func->params) { | |
5463 | params = func->params; | |
5464 | func->params = params->next; | |
5465 | free(params); | |
5466 | } | |
5467 | ||
5468 | free(func); | |
5469 | } | |
5470 | ||
5471 | /** | |
5472 | * pevent_register_print_function - register a helper function | |
5473 | * @pevent: the handle to the pevent | |
5474 | * @func: the function to process the helper function | |
16e6b8fd | 5475 | * @ret_type: the return type of the helper function |
f7d82350 SR |
5476 | * @name: the name of the helper function |
5477 | * @parameters: A list of enum pevent_func_arg_type | |
5478 | * | |
5479 | * Some events may have helper functions in the print format arguments. | |
16e6b8fd | 5480 | * This allows a plugin to dynamically create a way to process one |
f7d82350 SR |
5481 | * of these functions. |
5482 | * | |
5483 | * The @parameters is a variable list of pevent_func_arg_type enums that | |
5484 | * must end with PEVENT_FUNC_ARG_VOID. | |
5485 | */ | |
5486 | int pevent_register_print_function(struct pevent *pevent, | |
5487 | pevent_func_handler func, | |
5488 | enum pevent_func_arg_type ret_type, | |
5489 | char *name, ...) | |
5490 | { | |
5491 | struct pevent_function_handler *func_handle; | |
5492 | struct pevent_func_params **next_param; | |
5493 | struct pevent_func_params *param; | |
5494 | enum pevent_func_arg_type type; | |
5495 | va_list ap; | |
67ed939c | 5496 | int ret; |
f7d82350 SR |
5497 | |
5498 | func_handle = find_func_handler(pevent, name); | |
5499 | if (func_handle) { | |
5500 | /* | |
5501 | * This is most like caused by the users own | |
5502 | * plugins updating the function. This overrides the | |
5503 | * system defaults. | |
5504 | */ | |
5505 | pr_stat("override of function helper '%s'", name); | |
5506 | remove_func_handler(pevent, name); | |
5507 | } | |
5508 | ||
87162d81 | 5509 | func_handle = calloc(1, sizeof(*func_handle)); |
67ed939c NK |
5510 | if (!func_handle) { |
5511 | do_warning("Failed to allocate function handler"); | |
5512 | return PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
5513 | } | |
f7d82350 SR |
5514 | |
5515 | func_handle->ret_type = ret_type; | |
5516 | func_handle->name = strdup(name); | |
5517 | func_handle->func = func; | |
67ed939c NK |
5518 | if (!func_handle->name) { |
5519 | do_warning("Failed to allocate function name"); | |
5520 | free(func_handle); | |
5521 | return PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
5522 | } | |
f7d82350 SR |
5523 | |
5524 | next_param = &(func_handle->params); | |
5525 | va_start(ap, name); | |
5526 | for (;;) { | |
5527 | type = va_arg(ap, enum pevent_func_arg_type); | |
5528 | if (type == PEVENT_FUNC_ARG_VOID) | |
5529 | break; | |
5530 | ||
e46466b8 | 5531 | if (type >= PEVENT_FUNC_ARG_MAX_TYPES) { |
67ed939c NK |
5532 | do_warning("Invalid argument type %d", type); |
5533 | ret = PEVENT_ERRNO__INVALID_ARG_TYPE; | |
f7d82350 SR |
5534 | goto out_free; |
5535 | } | |
5536 | ||
67ed939c NK |
5537 | param = malloc(sizeof(*param)); |
5538 | if (!param) { | |
5539 | do_warning("Failed to allocate function param"); | |
5540 | ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
5541 | goto out_free; | |
5542 | } | |
f7d82350 SR |
5543 | param->type = type; |
5544 | param->next = NULL; | |
5545 | ||
5546 | *next_param = param; | |
5547 | next_param = &(param->next); | |
5548 | ||
5549 | func_handle->nr_args++; | |
5550 | } | |
5551 | va_end(ap); | |
5552 | ||
5553 | func_handle->next = pevent->func_handlers; | |
5554 | pevent->func_handlers = func_handle; | |
5555 | ||
5556 | return 0; | |
5557 | out_free: | |
5558 | va_end(ap); | |
5559 | free_func_handle(func_handle); | |
67ed939c | 5560 | return ret; |
f7d82350 SR |
5561 | } |
5562 | ||
20c7e5ab NK |
5563 | /** |
5564 | * pevent_unregister_print_function - unregister a helper function | |
5565 | * @pevent: the handle to the pevent | |
5566 | * @func: the function to process the helper function | |
5567 | * @name: the name of the helper function | |
5568 | * | |
5569 | * This function removes existing print handler for function @name. | |
5570 | * | |
5571 | * Returns 0 if the handler was removed successully, -1 otherwise. | |
5572 | */ | |
5573 | int pevent_unregister_print_function(struct pevent *pevent, | |
5574 | pevent_func_handler func, char *name) | |
5575 | { | |
5576 | struct pevent_function_handler *func_handle; | |
5577 | ||
5578 | func_handle = find_func_handler(pevent, name); | |
5579 | if (func_handle && func_handle->func == func) { | |
5580 | remove_func_handler(pevent, name); | |
5581 | return 0; | |
5582 | } | |
5583 | return -1; | |
5584 | } | |
5585 | ||
ad13701d NK |
5586 | static struct event_format *pevent_search_event(struct pevent *pevent, int id, |
5587 | const char *sys_name, | |
5588 | const char *event_name) | |
5589 | { | |
5590 | struct event_format *event; | |
5591 | ||
5592 | if (id >= 0) { | |
5593 | /* search by id */ | |
5594 | event = pevent_find_event(pevent, id); | |
5595 | if (!event) | |
5596 | return NULL; | |
5597 | if (event_name && (strcmp(event_name, event->name) != 0)) | |
5598 | return NULL; | |
5599 | if (sys_name && (strcmp(sys_name, event->system) != 0)) | |
5600 | return NULL; | |
5601 | } else { | |
5602 | event = pevent_find_event_by_name(pevent, sys_name, event_name); | |
5603 | if (!event) | |
5604 | return NULL; | |
5605 | } | |
5606 | return event; | |
5607 | } | |
5608 | ||
f7d82350 | 5609 | /** |
16e6b8fd | 5610 | * pevent_register_event_handler - register a way to parse an event |
f7d82350 SR |
5611 | * @pevent: the handle to the pevent |
5612 | * @id: the id of the event to register | |
5613 | * @sys_name: the system name the event belongs to | |
5614 | * @event_name: the name of the event | |
5615 | * @func: the function to call to parse the event information | |
16e6b8fd | 5616 | * @context: the data to be passed to @func |
f7d82350 SR |
5617 | * |
5618 | * This function allows a developer to override the parsing of | |
5619 | * a given event. If for some reason the default print format | |
5620 | * is not sufficient, this function will register a function | |
5621 | * for an event to be used to parse the data instead. | |
5622 | * | |
5623 | * If @id is >= 0, then it is used to find the event. | |
5624 | * else @sys_name and @event_name are used. | |
5625 | */ | |
79d5adf0 NK |
5626 | int pevent_register_event_handler(struct pevent *pevent, int id, |
5627 | const char *sys_name, const char *event_name, | |
5628 | pevent_event_handler_func func, void *context) | |
f7d82350 SR |
5629 | { |
5630 | struct event_format *event; | |
5631 | struct event_handler *handle; | |
5632 | ||
ad13701d NK |
5633 | event = pevent_search_event(pevent, id, sys_name, event_name); |
5634 | if (event == NULL) | |
5635 | goto not_found; | |
f7d82350 SR |
5636 | |
5637 | pr_stat("overriding event (%d) %s:%s with new print handler", | |
5638 | event->id, event->system, event->name); | |
5639 | ||
5640 | event->handler = func; | |
5641 | event->context = context; | |
5642 | return 0; | |
5643 | ||
5644 | not_found: | |
5645 | /* Save for later use. */ | |
87162d81 | 5646 | handle = calloc(1, sizeof(*handle)); |
0ca8da00 NK |
5647 | if (!handle) { |
5648 | do_warning("Failed to allocate event handler"); | |
5649 | return PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
5650 | } | |
5651 | ||
f7d82350 SR |
5652 | handle->id = id; |
5653 | if (event_name) | |
5654 | handle->event_name = strdup(event_name); | |
5655 | if (sys_name) | |
5656 | handle->sys_name = strdup(sys_name); | |
5657 | ||
ca63858e NK |
5658 | if ((event_name && !handle->event_name) || |
5659 | (sys_name && !handle->sys_name)) { | |
0ca8da00 NK |
5660 | do_warning("Failed to allocate event/sys name"); |
5661 | free((void *)handle->event_name); | |
5662 | free((void *)handle->sys_name); | |
5663 | free(handle); | |
5664 | return PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
ca63858e NK |
5665 | } |
5666 | ||
f7d82350 SR |
5667 | handle->func = func; |
5668 | handle->next = pevent->handlers; | |
5669 | pevent->handlers = handle; | |
5670 | handle->context = context; | |
5671 | ||
5672 | return -1; | |
5673 | } | |
5674 | ||
ad13701d NK |
5675 | static int handle_matches(struct event_handler *handler, int id, |
5676 | const char *sys_name, const char *event_name, | |
5677 | pevent_event_handler_func func, void *context) | |
5678 | { | |
5679 | if (id >= 0 && id != handler->id) | |
5680 | return 0; | |
5681 | ||
5682 | if (event_name && (strcmp(event_name, handler->event_name) != 0)) | |
5683 | return 0; | |
5684 | ||
5685 | if (sys_name && (strcmp(sys_name, handler->sys_name) != 0)) | |
5686 | return 0; | |
5687 | ||
5688 | if (func != handler->func || context != handler->context) | |
5689 | return 0; | |
5690 | ||
5691 | return 1; | |
5692 | } | |
5693 | ||
5694 | /** | |
5695 | * pevent_unregister_event_handler - unregister an existing event handler | |
5696 | * @pevent: the handle to the pevent | |
5697 | * @id: the id of the event to unregister | |
5698 | * @sys_name: the system name the handler belongs to | |
5699 | * @event_name: the name of the event handler | |
5700 | * @func: the function to call to parse the event information | |
5701 | * @context: the data to be passed to @func | |
5702 | * | |
5703 | * This function removes existing event handler (parser). | |
5704 | * | |
5705 | * If @id is >= 0, then it is used to find the event. | |
5706 | * else @sys_name and @event_name are used. | |
5707 | * | |
5708 | * Returns 0 if handler was removed successfully, -1 if event was not found. | |
5709 | */ | |
5710 | int pevent_unregister_event_handler(struct pevent *pevent, int id, | |
5711 | const char *sys_name, const char *event_name, | |
5712 | pevent_event_handler_func func, void *context) | |
5713 | { | |
5714 | struct event_format *event; | |
5715 | struct event_handler *handle; | |
5716 | struct event_handler **next; | |
5717 | ||
5718 | event = pevent_search_event(pevent, id, sys_name, event_name); | |
5719 | if (event == NULL) | |
5720 | goto not_found; | |
5721 | ||
5722 | if (event->handler == func && event->context == context) { | |
5723 | pr_stat("removing override handler for event (%d) %s:%s. Going back to default handler.", | |
5724 | event->id, event->system, event->name); | |
5725 | ||
5726 | event->handler = NULL; | |
5727 | event->context = NULL; | |
5728 | return 0; | |
5729 | } | |
5730 | ||
5731 | not_found: | |
5732 | for (next = &pevent->handlers; *next; next = &(*next)->next) { | |
5733 | handle = *next; | |
5734 | if (handle_matches(handle, id, sys_name, event_name, | |
5735 | func, context)) | |
5736 | break; | |
5737 | } | |
5738 | ||
5739 | if (!(*next)) | |
5740 | return -1; | |
5741 | ||
5742 | *next = handle->next; | |
5743 | free_handler(handle); | |
5744 | ||
5745 | return 0; | |
5746 | } | |
5747 | ||
f7d82350 SR |
5748 | /** |
5749 | * pevent_alloc - create a pevent handle | |
5750 | */ | |
5751 | struct pevent *pevent_alloc(void) | |
5752 | { | |
87162d81 | 5753 | struct pevent *pevent = calloc(1, sizeof(*pevent)); |
f7d82350 | 5754 | |
87162d81 ACM |
5755 | if (pevent) |
5756 | pevent->ref_count = 1; | |
f7d82350 SR |
5757 | |
5758 | return pevent; | |
5759 | } | |
5760 | ||
5761 | void pevent_ref(struct pevent *pevent) | |
5762 | { | |
5763 | pevent->ref_count++; | |
5764 | } | |
5765 | ||
5766 | static void free_format_fields(struct format_field *field) | |
5767 | { | |
5768 | struct format_field *next; | |
5769 | ||
5770 | while (field) { | |
5771 | next = field->next; | |
5772 | free(field->type); | |
5773 | free(field->name); | |
5774 | free(field); | |
5775 | field = next; | |
5776 | } | |
5777 | } | |
5778 | ||
5779 | static void free_formats(struct format *format) | |
5780 | { | |
5781 | free_format_fields(format->common_fields); | |
5782 | free_format_fields(format->fields); | |
5783 | } | |
5784 | ||
2b29175d | 5785 | void pevent_free_format(struct event_format *event) |
f7d82350 SR |
5786 | { |
5787 | free(event->name); | |
5788 | free(event->system); | |
5789 | ||
5790 | free_formats(&event->format); | |
5791 | ||
5792 | free(event->print_fmt.format); | |
5793 | free_args(event->print_fmt.args); | |
5794 | ||
5795 | free(event); | |
5796 | } | |
5797 | ||
5798 | /** | |
5799 | * pevent_free - free a pevent handle | |
5800 | * @pevent: the pevent handle to free | |
5801 | */ | |
5802 | void pevent_free(struct pevent *pevent) | |
5803 | { | |
a2525a08 SR |
5804 | struct cmdline_list *cmdlist, *cmdnext; |
5805 | struct func_list *funclist, *funcnext; | |
5806 | struct printk_list *printklist, *printknext; | |
f7d82350 SR |
5807 | struct pevent_function_handler *func_handler; |
5808 | struct event_handler *handle; | |
5809 | int i; | |
5810 | ||
a2525a08 SR |
5811 | if (!pevent) |
5812 | return; | |
5813 | ||
5814 | cmdlist = pevent->cmdlist; | |
5815 | funclist = pevent->funclist; | |
5816 | printklist = pevent->printklist; | |
5817 | ||
f7d82350 SR |
5818 | pevent->ref_count--; |
5819 | if (pevent->ref_count) | |
5820 | return; | |
5821 | ||
5822 | if (pevent->cmdlines) { | |
5823 | for (i = 0; i < pevent->cmdline_count; i++) | |
5824 | free(pevent->cmdlines[i].comm); | |
5825 | free(pevent->cmdlines); | |
5826 | } | |
5827 | ||
5828 | while (cmdlist) { | |
5829 | cmdnext = cmdlist->next; | |
5830 | free(cmdlist->comm); | |
5831 | free(cmdlist); | |
5832 | cmdlist = cmdnext; | |
5833 | } | |
5834 | ||
5835 | if (pevent->func_map) { | |
8a38cce4 | 5836 | for (i = 0; i < (int)pevent->func_count; i++) { |
f7d82350 SR |
5837 | free(pevent->func_map[i].func); |
5838 | free(pevent->func_map[i].mod); | |
5839 | } | |
5840 | free(pevent->func_map); | |
5841 | } | |
5842 | ||
5843 | while (funclist) { | |
5844 | funcnext = funclist->next; | |
5845 | free(funclist->func); | |
5846 | free(funclist->mod); | |
5847 | free(funclist); | |
5848 | funclist = funcnext; | |
5849 | } | |
5850 | ||
5851 | while (pevent->func_handlers) { | |
5852 | func_handler = pevent->func_handlers; | |
5853 | pevent->func_handlers = func_handler->next; | |
5854 | free_func_handle(func_handler); | |
5855 | } | |
5856 | ||
5857 | if (pevent->printk_map) { | |
8a38cce4 | 5858 | for (i = 0; i < (int)pevent->printk_count; i++) |
f7d82350 SR |
5859 | free(pevent->printk_map[i].printk); |
5860 | free(pevent->printk_map); | |
5861 | } | |
5862 | ||
5863 | while (printklist) { | |
5864 | printknext = printklist->next; | |
5865 | free(printklist->printk); | |
5866 | free(printklist); | |
5867 | printklist = printknext; | |
5868 | } | |
5869 | ||
5870 | for (i = 0; i < pevent->nr_events; i++) | |
2b29175d | 5871 | pevent_free_format(pevent->events[i]); |
f7d82350 SR |
5872 | |
5873 | while (pevent->handlers) { | |
5874 | handle = pevent->handlers; | |
5875 | pevent->handlers = handle->next; | |
5876 | free_handler(handle); | |
5877 | } | |
5878 | ||
5879 | free(pevent->events); | |
5880 | free(pevent->sort_events); | |
5881 | ||
5882 | free(pevent); | |
5883 | } | |
5884 | ||
5885 | void pevent_unref(struct pevent *pevent) | |
5886 | { | |
5887 | pevent_free(pevent); | |
5888 | } |