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f7d82350 SR |
1 | /* |
2 | * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com> | |
3 | * | |
4 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
5 | * This program is free software; you can redistribute it and/or | |
6 | * modify it under the terms of the GNU Lesser General Public | |
7 | * License as published by the Free Software Foundation; | |
8 | * version 2.1 of the License (not later!) | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU Lesser General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU Lesser General Public | |
7b9f6b40 | 16 | * License along with this program; if not, see <http://www.gnu.org/licenses> |
f7d82350 SR |
17 | * |
18 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
19 | * | |
20 | * The parts for function graph printing was taken and modified from the | |
21 | * Linux Kernel that were written by | |
22 | * - Copyright (C) 2009 Frederic Weisbecker, | |
23 | * Frederic Weisbecker gave his permission to relicense the code to | |
24 | * the Lesser General Public License. | |
25 | */ | |
f7d82350 SR |
26 | #include <stdio.h> |
27 | #include <stdlib.h> | |
28 | #include <string.h> | |
29 | #include <stdarg.h> | |
30 | #include <ctype.h> | |
31 | #include <errno.h> | |
0cf26013 | 32 | #include <stdint.h> |
a6d2a61a | 33 | #include <limits.h> |
f7d82350 | 34 | |
3d199b5b | 35 | #include <netinet/ip6.h> |
f7d82350 | 36 | #include "event-parse.h" |
668fe01f | 37 | #include "event-utils.h" |
f7d82350 SR |
38 | |
39 | static const char *input_buf; | |
40 | static unsigned long long input_buf_ptr; | |
41 | static unsigned long long input_buf_siz; | |
42 | ||
5205aec9 TZ |
43 | static int is_flag_field; |
44 | static int is_symbolic_field; | |
45 | ||
f7d82350 SR |
46 | static int show_warning = 1; |
47 | ||
48 | #define do_warning(fmt, ...) \ | |
49 | do { \ | |
50 | if (show_warning) \ | |
51 | warning(fmt, ##__VA_ARGS__); \ | |
52 | } while (0) | |
53 | ||
3388cc3e NK |
54 | #define do_warning_event(event, fmt, ...) \ |
55 | do { \ | |
56 | if (!show_warning) \ | |
57 | continue; \ | |
58 | \ | |
59 | if (event) \ | |
60 | warning("[%s:%s] " fmt, event->system, \ | |
61 | event->name, ##__VA_ARGS__); \ | |
62 | else \ | |
63 | warning(fmt, ##__VA_ARGS__); \ | |
64 | } while (0) | |
65 | ||
f7d82350 SR |
66 | static void init_input_buf(const char *buf, unsigned long long size) |
67 | { | |
68 | input_buf = buf; | |
69 | input_buf_siz = size; | |
70 | input_buf_ptr = 0; | |
71 | } | |
72 | ||
73 | const char *pevent_get_input_buf(void) | |
74 | { | |
75 | return input_buf; | |
76 | } | |
77 | ||
78 | unsigned long long pevent_get_input_buf_ptr(void) | |
79 | { | |
80 | return input_buf_ptr; | |
81 | } | |
82 | ||
83 | struct event_handler { | |
84 | struct event_handler *next; | |
85 | int id; | |
86 | const char *sys_name; | |
87 | const char *event_name; | |
88 | pevent_event_handler_func func; | |
89 | void *context; | |
90 | }; | |
91 | ||
92 | struct pevent_func_params { | |
93 | struct pevent_func_params *next; | |
94 | enum pevent_func_arg_type type; | |
95 | }; | |
96 | ||
97 | struct pevent_function_handler { | |
98 | struct pevent_function_handler *next; | |
99 | enum pevent_func_arg_type ret_type; | |
100 | char *name; | |
101 | pevent_func_handler func; | |
102 | struct pevent_func_params *params; | |
103 | int nr_args; | |
104 | }; | |
105 | ||
106 | static unsigned long long | |
107 | process_defined_func(struct trace_seq *s, void *data, int size, | |
108 | struct event_format *event, struct print_arg *arg); | |
109 | ||
110 | static void free_func_handle(struct pevent_function_handler *func); | |
111 | ||
112 | /** | |
113 | * pevent_buffer_init - init buffer for parsing | |
114 | * @buf: buffer to parse | |
115 | * @size: the size of the buffer | |
116 | * | |
117 | * For use with pevent_read_token(), this initializes the internal | |
118 | * buffer that pevent_read_token() will parse. | |
119 | */ | |
120 | void pevent_buffer_init(const char *buf, unsigned long long size) | |
121 | { | |
122 | init_input_buf(buf, size); | |
123 | } | |
124 | ||
125 | void breakpoint(void) | |
126 | { | |
127 | static int x; | |
128 | x++; | |
129 | } | |
130 | ||
131 | struct print_arg *alloc_arg(void) | |
132 | { | |
87162d81 | 133 | return calloc(1, sizeof(struct print_arg)); |
f7d82350 SR |
134 | } |
135 | ||
136 | struct cmdline { | |
137 | char *comm; | |
138 | int pid; | |
139 | }; | |
140 | ||
141 | static int cmdline_cmp(const void *a, const void *b) | |
142 | { | |
143 | const struct cmdline *ca = a; | |
144 | const struct cmdline *cb = b; | |
145 | ||
146 | if (ca->pid < cb->pid) | |
147 | return -1; | |
148 | if (ca->pid > cb->pid) | |
149 | return 1; | |
150 | ||
151 | return 0; | |
152 | } | |
153 | ||
154 | struct cmdline_list { | |
155 | struct cmdline_list *next; | |
156 | char *comm; | |
157 | int pid; | |
158 | }; | |
159 | ||
160 | static int cmdline_init(struct pevent *pevent) | |
161 | { | |
162 | struct cmdline_list *cmdlist = pevent->cmdlist; | |
163 | struct cmdline_list *item; | |
164 | struct cmdline *cmdlines; | |
165 | int i; | |
166 | ||
a6d2a61a ACM |
167 | cmdlines = malloc(sizeof(*cmdlines) * pevent->cmdline_count); |
168 | if (!cmdlines) | |
169 | return -1; | |
f7d82350 SR |
170 | |
171 | i = 0; | |
172 | while (cmdlist) { | |
173 | cmdlines[i].pid = cmdlist->pid; | |
174 | cmdlines[i].comm = cmdlist->comm; | |
175 | i++; | |
176 | item = cmdlist; | |
177 | cmdlist = cmdlist->next; | |
178 | free(item); | |
179 | } | |
180 | ||
181 | qsort(cmdlines, pevent->cmdline_count, sizeof(*cmdlines), cmdline_cmp); | |
182 | ||
183 | pevent->cmdlines = cmdlines; | |
184 | pevent->cmdlist = NULL; | |
185 | ||
186 | return 0; | |
187 | } | |
188 | ||
27f94d52 | 189 | static const char *find_cmdline(struct pevent *pevent, int pid) |
f7d82350 SR |
190 | { |
191 | const struct cmdline *comm; | |
192 | struct cmdline key; | |
193 | ||
194 | if (!pid) | |
195 | return "<idle>"; | |
196 | ||
a6d2a61a ACM |
197 | if (!pevent->cmdlines && cmdline_init(pevent)) |
198 | return "<not enough memory for cmdlines!>"; | |
f7d82350 SR |
199 | |
200 | key.pid = pid; | |
201 | ||
202 | comm = bsearch(&key, pevent->cmdlines, pevent->cmdline_count, | |
203 | sizeof(*pevent->cmdlines), cmdline_cmp); | |
204 | ||
205 | if (comm) | |
206 | return comm->comm; | |
207 | return "<...>"; | |
208 | } | |
209 | ||
210 | /** | |
211 | * pevent_pid_is_registered - return if a pid has a cmdline registered | |
212 | * @pevent: handle for the pevent | |
213 | * @pid: The pid to check if it has a cmdline registered with. | |
214 | * | |
215 | * Returns 1 if the pid has a cmdline mapped to it | |
216 | * 0 otherwise. | |
217 | */ | |
218 | int pevent_pid_is_registered(struct pevent *pevent, int pid) | |
219 | { | |
220 | const struct cmdline *comm; | |
221 | struct cmdline key; | |
222 | ||
223 | if (!pid) | |
224 | return 1; | |
225 | ||
a6d2a61a ACM |
226 | if (!pevent->cmdlines && cmdline_init(pevent)) |
227 | return 0; | |
f7d82350 SR |
228 | |
229 | key.pid = pid; | |
230 | ||
231 | comm = bsearch(&key, pevent->cmdlines, pevent->cmdline_count, | |
232 | sizeof(*pevent->cmdlines), cmdline_cmp); | |
233 | ||
234 | if (comm) | |
235 | return 1; | |
236 | return 0; | |
237 | } | |
238 | ||
239 | /* | |
240 | * If the command lines have been converted to an array, then | |
241 | * we must add this pid. This is much slower than when cmdlines | |
242 | * are added before the array is initialized. | |
243 | */ | |
244 | static int add_new_comm(struct pevent *pevent, const char *comm, int pid) | |
245 | { | |
246 | struct cmdline *cmdlines = pevent->cmdlines; | |
247 | const struct cmdline *cmdline; | |
248 | struct cmdline key; | |
249 | ||
250 | if (!pid) | |
251 | return 0; | |
252 | ||
253 | /* avoid duplicates */ | |
254 | key.pid = pid; | |
255 | ||
256 | cmdline = bsearch(&key, pevent->cmdlines, pevent->cmdline_count, | |
257 | sizeof(*pevent->cmdlines), cmdline_cmp); | |
258 | if (cmdline) { | |
259 | errno = EEXIST; | |
260 | return -1; | |
261 | } | |
262 | ||
263 | cmdlines = realloc(cmdlines, sizeof(*cmdlines) * (pevent->cmdline_count + 1)); | |
264 | if (!cmdlines) { | |
265 | errno = ENOMEM; | |
266 | return -1; | |
267 | } | |
268 | ||
f7d82350 | 269 | cmdlines[pevent->cmdline_count].comm = strdup(comm); |
a6d2a61a ACM |
270 | if (!cmdlines[pevent->cmdline_count].comm) { |
271 | free(cmdlines); | |
272 | errno = ENOMEM; | |
273 | return -1; | |
274 | } | |
275 | ||
276 | cmdlines[pevent->cmdline_count].pid = pid; | |
f7d82350 SR |
277 | |
278 | if (cmdlines[pevent->cmdline_count].comm) | |
279 | pevent->cmdline_count++; | |
280 | ||
281 | qsort(cmdlines, pevent->cmdline_count, sizeof(*cmdlines), cmdline_cmp); | |
282 | pevent->cmdlines = cmdlines; | |
283 | ||
284 | return 0; | |
285 | } | |
286 | ||
287 | /** | |
288 | * pevent_register_comm - register a pid / comm mapping | |
289 | * @pevent: handle for the pevent | |
290 | * @comm: the command line to register | |
291 | * @pid: the pid to map the command line to | |
292 | * | |
293 | * This adds a mapping to search for command line names with | |
294 | * a given pid. The comm is duplicated. | |
295 | */ | |
296 | int pevent_register_comm(struct pevent *pevent, const char *comm, int pid) | |
297 | { | |
298 | struct cmdline_list *item; | |
299 | ||
300 | if (pevent->cmdlines) | |
301 | return add_new_comm(pevent, comm, pid); | |
302 | ||
a6d2a61a ACM |
303 | item = malloc(sizeof(*item)); |
304 | if (!item) | |
305 | return -1; | |
306 | ||
deab6f55 JB |
307 | if (comm) |
308 | item->comm = strdup(comm); | |
309 | else | |
310 | item->comm = strdup("<...>"); | |
a6d2a61a ACM |
311 | if (!item->comm) { |
312 | free(item); | |
313 | return -1; | |
314 | } | |
f7d82350 SR |
315 | item->pid = pid; |
316 | item->next = pevent->cmdlist; | |
317 | ||
318 | pevent->cmdlist = item; | |
319 | pevent->cmdline_count++; | |
320 | ||
321 | return 0; | |
322 | } | |
323 | ||
99ad1417 | 324 | int pevent_register_trace_clock(struct pevent *pevent, const char *trace_clock) |
1b372ca5 | 325 | { |
99ad1417 SRRH |
326 | pevent->trace_clock = strdup(trace_clock); |
327 | if (!pevent->trace_clock) { | |
328 | errno = ENOMEM; | |
329 | return -1; | |
330 | } | |
331 | return 0; | |
1b372ca5 YY |
332 | } |
333 | ||
f7d82350 SR |
334 | struct func_map { |
335 | unsigned long long addr; | |
336 | char *func; | |
337 | char *mod; | |
338 | }; | |
339 | ||
340 | struct func_list { | |
341 | struct func_list *next; | |
342 | unsigned long long addr; | |
343 | char *func; | |
344 | char *mod; | |
345 | }; | |
346 | ||
347 | static int func_cmp(const void *a, const void *b) | |
348 | { | |
349 | const struct func_map *fa = a; | |
350 | const struct func_map *fb = b; | |
351 | ||
352 | if (fa->addr < fb->addr) | |
353 | return -1; | |
354 | if (fa->addr > fb->addr) | |
355 | return 1; | |
356 | ||
357 | return 0; | |
358 | } | |
359 | ||
360 | /* | |
361 | * We are searching for a record in between, not an exact | |
362 | * match. | |
363 | */ | |
364 | static int func_bcmp(const void *a, const void *b) | |
365 | { | |
366 | const struct func_map *fa = a; | |
367 | const struct func_map *fb = b; | |
368 | ||
369 | if ((fa->addr == fb->addr) || | |
370 | ||
371 | (fa->addr > fb->addr && | |
372 | fa->addr < (fb+1)->addr)) | |
373 | return 0; | |
374 | ||
375 | if (fa->addr < fb->addr) | |
376 | return -1; | |
377 | ||
378 | return 1; | |
379 | } | |
380 | ||
381 | static int func_map_init(struct pevent *pevent) | |
382 | { | |
383 | struct func_list *funclist; | |
384 | struct func_list *item; | |
385 | struct func_map *func_map; | |
386 | int i; | |
387 | ||
a6d2a61a ACM |
388 | func_map = malloc(sizeof(*func_map) * (pevent->func_count + 1)); |
389 | if (!func_map) | |
390 | return -1; | |
391 | ||
f7d82350 SR |
392 | funclist = pevent->funclist; |
393 | ||
394 | i = 0; | |
395 | while (funclist) { | |
396 | func_map[i].func = funclist->func; | |
397 | func_map[i].addr = funclist->addr; | |
398 | func_map[i].mod = funclist->mod; | |
399 | i++; | |
400 | item = funclist; | |
401 | funclist = funclist->next; | |
402 | free(item); | |
403 | } | |
404 | ||
405 | qsort(func_map, pevent->func_count, sizeof(*func_map), func_cmp); | |
406 | ||
407 | /* | |
408 | * Add a special record at the end. | |
409 | */ | |
410 | func_map[pevent->func_count].func = NULL; | |
411 | func_map[pevent->func_count].addr = 0; | |
412 | func_map[pevent->func_count].mod = NULL; | |
413 | ||
414 | pevent->func_map = func_map; | |
415 | pevent->funclist = NULL; | |
416 | ||
417 | return 0; | |
418 | } | |
419 | ||
420 | static struct func_map * | |
33a2471c | 421 | __find_func(struct pevent *pevent, unsigned long long addr) |
f7d82350 SR |
422 | { |
423 | struct func_map *func; | |
424 | struct func_map key; | |
425 | ||
426 | if (!pevent->func_map) | |
427 | func_map_init(pevent); | |
428 | ||
429 | key.addr = addr; | |
430 | ||
431 | func = bsearch(&key, pevent->func_map, pevent->func_count, | |
432 | sizeof(*pevent->func_map), func_bcmp); | |
433 | ||
434 | return func; | |
435 | } | |
436 | ||
33a2471c ACM |
437 | struct func_resolver { |
438 | pevent_func_resolver_t *func; | |
439 | void *priv; | |
440 | struct func_map map; | |
441 | }; | |
442 | ||
443 | /** | |
444 | * pevent_set_function_resolver - set an alternative function resolver | |
445 | * @pevent: handle for the pevent | |
446 | * @resolver: function to be used | |
447 | * @priv: resolver function private state. | |
448 | * | |
449 | * Some tools may have already a way to resolve kernel functions, allow them to | |
450 | * keep using it instead of duplicating all the entries inside | |
451 | * pevent->funclist. | |
452 | */ | |
453 | int pevent_set_function_resolver(struct pevent *pevent, | |
454 | pevent_func_resolver_t *func, void *priv) | |
455 | { | |
456 | struct func_resolver *resolver = malloc(sizeof(*resolver)); | |
457 | ||
458 | if (resolver == NULL) | |
459 | return -1; | |
460 | ||
461 | resolver->func = func; | |
462 | resolver->priv = priv; | |
463 | ||
464 | free(pevent->func_resolver); | |
465 | pevent->func_resolver = resolver; | |
466 | ||
467 | return 0; | |
468 | } | |
469 | ||
470 | /** | |
471 | * pevent_reset_function_resolver - reset alternative function resolver | |
472 | * @pevent: handle for the pevent | |
473 | * | |
474 | * Stop using whatever alternative resolver was set, use the default | |
475 | * one instead. | |
476 | */ | |
477 | void pevent_reset_function_resolver(struct pevent *pevent) | |
478 | { | |
479 | free(pevent->func_resolver); | |
480 | pevent->func_resolver = NULL; | |
481 | } | |
482 | ||
483 | static struct func_map * | |
484 | find_func(struct pevent *pevent, unsigned long long addr) | |
485 | { | |
486 | struct func_map *map; | |
487 | ||
488 | if (!pevent->func_resolver) | |
489 | return __find_func(pevent, addr); | |
490 | ||
491 | map = &pevent->func_resolver->map; | |
492 | map->mod = NULL; | |
493 | map->addr = addr; | |
494 | map->func = pevent->func_resolver->func(pevent->func_resolver->priv, | |
495 | &map->addr, &map->mod); | |
496 | if (map->func == NULL) | |
497 | return NULL; | |
498 | ||
499 | return map; | |
500 | } | |
501 | ||
f7d82350 SR |
502 | /** |
503 | * pevent_find_function - find a function by a given address | |
504 | * @pevent: handle for the pevent | |
505 | * @addr: the address to find the function with | |
506 | * | |
507 | * Returns a pointer to the function stored that has the given | |
508 | * address. Note, the address does not have to be exact, it | |
509 | * will select the function that would contain the address. | |
510 | */ | |
511 | const char *pevent_find_function(struct pevent *pevent, unsigned long long addr) | |
512 | { | |
513 | struct func_map *map; | |
514 | ||
515 | map = find_func(pevent, addr); | |
516 | if (!map) | |
517 | return NULL; | |
518 | ||
519 | return map->func; | |
520 | } | |
521 | ||
522 | /** | |
523 | * pevent_find_function_address - find a function address by a given address | |
524 | * @pevent: handle for the pevent | |
525 | * @addr: the address to find the function with | |
526 | * | |
527 | * Returns the address the function starts at. This can be used in | |
528 | * conjunction with pevent_find_function to print both the function | |
529 | * name and the function offset. | |
530 | */ | |
531 | unsigned long long | |
532 | pevent_find_function_address(struct pevent *pevent, unsigned long long addr) | |
533 | { | |
534 | struct func_map *map; | |
535 | ||
536 | map = find_func(pevent, addr); | |
537 | if (!map) | |
538 | return 0; | |
539 | ||
540 | return map->addr; | |
541 | } | |
542 | ||
543 | /** | |
544 | * pevent_register_function - register a function with a given address | |
545 | * @pevent: handle for the pevent | |
546 | * @function: the function name to register | |
547 | * @addr: the address the function starts at | |
548 | * @mod: the kernel module the function may be in (NULL for none) | |
549 | * | |
550 | * This registers a function name with an address and module. | |
551 | * The @func passed in is duplicated. | |
552 | */ | |
553 | int pevent_register_function(struct pevent *pevent, char *func, | |
554 | unsigned long long addr, char *mod) | |
555 | { | |
a6d2a61a | 556 | struct func_list *item = malloc(sizeof(*item)); |
f7d82350 | 557 | |
a6d2a61a ACM |
558 | if (!item) |
559 | return -1; | |
f7d82350 SR |
560 | |
561 | item->next = pevent->funclist; | |
562 | item->func = strdup(func); | |
a6d2a61a ACM |
563 | if (!item->func) |
564 | goto out_free; | |
565 | ||
566 | if (mod) { | |
f7d82350 | 567 | item->mod = strdup(mod); |
a6d2a61a ACM |
568 | if (!item->mod) |
569 | goto out_free_func; | |
570 | } else | |
f7d82350 SR |
571 | item->mod = NULL; |
572 | item->addr = addr; | |
573 | ||
ca63858e | 574 | pevent->funclist = item; |
f7d82350 SR |
575 | pevent->func_count++; |
576 | ||
577 | return 0; | |
a6d2a61a ACM |
578 | |
579 | out_free_func: | |
580 | free(item->func); | |
581 | item->func = NULL; | |
582 | out_free: | |
583 | free(item); | |
584 | errno = ENOMEM; | |
585 | return -1; | |
f7d82350 SR |
586 | } |
587 | ||
588 | /** | |
589 | * pevent_print_funcs - print out the stored functions | |
590 | * @pevent: handle for the pevent | |
591 | * | |
592 | * This prints out the stored functions. | |
593 | */ | |
594 | void pevent_print_funcs(struct pevent *pevent) | |
595 | { | |
596 | int i; | |
597 | ||
598 | if (!pevent->func_map) | |
599 | func_map_init(pevent); | |
600 | ||
601 | for (i = 0; i < (int)pevent->func_count; i++) { | |
602 | printf("%016llx %s", | |
603 | pevent->func_map[i].addr, | |
604 | pevent->func_map[i].func); | |
605 | if (pevent->func_map[i].mod) | |
606 | printf(" [%s]\n", pevent->func_map[i].mod); | |
607 | else | |
608 | printf("\n"); | |
609 | } | |
610 | } | |
611 | ||
612 | struct printk_map { | |
613 | unsigned long long addr; | |
614 | char *printk; | |
615 | }; | |
616 | ||
617 | struct printk_list { | |
618 | struct printk_list *next; | |
619 | unsigned long long addr; | |
620 | char *printk; | |
621 | }; | |
622 | ||
623 | static int printk_cmp(const void *a, const void *b) | |
624 | { | |
0fc45ef5 NK |
625 | const struct printk_map *pa = a; |
626 | const struct printk_map *pb = b; | |
f7d82350 | 627 | |
0fc45ef5 | 628 | if (pa->addr < pb->addr) |
f7d82350 | 629 | return -1; |
0fc45ef5 | 630 | if (pa->addr > pb->addr) |
f7d82350 SR |
631 | return 1; |
632 | ||
633 | return 0; | |
634 | } | |
635 | ||
a6d2a61a | 636 | static int printk_map_init(struct pevent *pevent) |
f7d82350 SR |
637 | { |
638 | struct printk_list *printklist; | |
639 | struct printk_list *item; | |
640 | struct printk_map *printk_map; | |
641 | int i; | |
642 | ||
a6d2a61a ACM |
643 | printk_map = malloc(sizeof(*printk_map) * (pevent->printk_count + 1)); |
644 | if (!printk_map) | |
645 | return -1; | |
f7d82350 SR |
646 | |
647 | printklist = pevent->printklist; | |
648 | ||
649 | i = 0; | |
650 | while (printklist) { | |
651 | printk_map[i].printk = printklist->printk; | |
652 | printk_map[i].addr = printklist->addr; | |
653 | i++; | |
654 | item = printklist; | |
655 | printklist = printklist->next; | |
656 | free(item); | |
657 | } | |
658 | ||
659 | qsort(printk_map, pevent->printk_count, sizeof(*printk_map), printk_cmp); | |
660 | ||
661 | pevent->printk_map = printk_map; | |
662 | pevent->printklist = NULL; | |
a6d2a61a ACM |
663 | |
664 | return 0; | |
f7d82350 SR |
665 | } |
666 | ||
667 | static struct printk_map * | |
668 | find_printk(struct pevent *pevent, unsigned long long addr) | |
669 | { | |
670 | struct printk_map *printk; | |
671 | struct printk_map key; | |
672 | ||
a6d2a61a ACM |
673 | if (!pevent->printk_map && printk_map_init(pevent)) |
674 | return NULL; | |
f7d82350 SR |
675 | |
676 | key.addr = addr; | |
677 | ||
678 | printk = bsearch(&key, pevent->printk_map, pevent->printk_count, | |
679 | sizeof(*pevent->printk_map), printk_cmp); | |
680 | ||
681 | return printk; | |
682 | } | |
683 | ||
684 | /** | |
685 | * pevent_register_print_string - register a string by its address | |
686 | * @pevent: handle for the pevent | |
687 | * @fmt: the string format to register | |
688 | * @addr: the address the string was located at | |
689 | * | |
690 | * This registers a string by the address it was stored in the kernel. | |
691 | * The @fmt passed in is duplicated. | |
692 | */ | |
18900af8 | 693 | int pevent_register_print_string(struct pevent *pevent, const char *fmt, |
f7d82350 SR |
694 | unsigned long long addr) |
695 | { | |
a6d2a61a | 696 | struct printk_list *item = malloc(sizeof(*item)); |
18900af8 | 697 | char *p; |
f7d82350 | 698 | |
a6d2a61a ACM |
699 | if (!item) |
700 | return -1; | |
f7d82350 SR |
701 | |
702 | item->next = pevent->printklist; | |
f7d82350 SR |
703 | item->addr = addr; |
704 | ||
18900af8 SRRH |
705 | /* Strip off quotes and '\n' from the end */ |
706 | if (fmt[0] == '"') | |
707 | fmt++; | |
a6d2a61a | 708 | item->printk = strdup(fmt); |
ca63858e | 709 | if (!item->printk) |
a6d2a61a | 710 | goto out_free; |
ca63858e | 711 | |
18900af8 SRRH |
712 | p = item->printk + strlen(item->printk) - 1; |
713 | if (*p == '"') | |
714 | *p = 0; | |
715 | ||
716 | p -= 2; | |
717 | if (strcmp(p, "\\n") == 0) | |
718 | *p = 0; | |
719 | ||
ca63858e | 720 | pevent->printklist = item; |
f7d82350 SR |
721 | pevent->printk_count++; |
722 | ||
723 | return 0; | |
a6d2a61a ACM |
724 | |
725 | out_free: | |
726 | free(item); | |
727 | errno = ENOMEM; | |
728 | return -1; | |
f7d82350 SR |
729 | } |
730 | ||
731 | /** | |
732 | * pevent_print_printk - print out the stored strings | |
733 | * @pevent: handle for the pevent | |
734 | * | |
735 | * This prints the string formats that were stored. | |
736 | */ | |
737 | void pevent_print_printk(struct pevent *pevent) | |
738 | { | |
739 | int i; | |
740 | ||
741 | if (!pevent->printk_map) | |
742 | printk_map_init(pevent); | |
743 | ||
744 | for (i = 0; i < (int)pevent->printk_count; i++) { | |
745 | printf("%016llx %s\n", | |
746 | pevent->printk_map[i].addr, | |
747 | pevent->printk_map[i].printk); | |
748 | } | |
749 | } | |
750 | ||
751 | static struct event_format *alloc_event(void) | |
752 | { | |
87162d81 | 753 | return calloc(1, sizeof(struct event_format)); |
f7d82350 SR |
754 | } |
755 | ||
a6d2a61a | 756 | static int add_event(struct pevent *pevent, struct event_format *event) |
f7d82350 SR |
757 | { |
758 | int i; | |
a6d2a61a ACM |
759 | struct event_format **events = realloc(pevent->events, sizeof(event) * |
760 | (pevent->nr_events + 1)); | |
761 | if (!events) | |
762 | return -1; | |
f7d82350 | 763 | |
a6d2a61a | 764 | pevent->events = events; |
f7d82350 SR |
765 | |
766 | for (i = 0; i < pevent->nr_events; i++) { | |
767 | if (pevent->events[i]->id > event->id) | |
768 | break; | |
769 | } | |
770 | if (i < pevent->nr_events) | |
771 | memmove(&pevent->events[i + 1], | |
772 | &pevent->events[i], | |
773 | sizeof(event) * (pevent->nr_events - i)); | |
774 | ||
775 | pevent->events[i] = event; | |
776 | pevent->nr_events++; | |
777 | ||
778 | event->pevent = pevent; | |
a6d2a61a ACM |
779 | |
780 | return 0; | |
f7d82350 SR |
781 | } |
782 | ||
783 | static int event_item_type(enum event_type type) | |
784 | { | |
785 | switch (type) { | |
786 | case EVENT_ITEM ... EVENT_SQUOTE: | |
787 | return 1; | |
788 | case EVENT_ERROR ... EVENT_DELIM: | |
789 | default: | |
790 | return 0; | |
791 | } | |
792 | } | |
793 | ||
794 | static void free_flag_sym(struct print_flag_sym *fsym) | |
795 | { | |
796 | struct print_flag_sym *next; | |
797 | ||
798 | while (fsym) { | |
799 | next = fsym->next; | |
800 | free(fsym->value); | |
801 | free(fsym->str); | |
802 | free(fsym); | |
803 | fsym = next; | |
804 | } | |
805 | } | |
806 | ||
807 | static void free_arg(struct print_arg *arg) | |
808 | { | |
809 | struct print_arg *farg; | |
810 | ||
811 | if (!arg) | |
812 | return; | |
813 | ||
814 | switch (arg->type) { | |
815 | case PRINT_ATOM: | |
816 | free(arg->atom.atom); | |
817 | break; | |
818 | case PRINT_FIELD: | |
819 | free(arg->field.name); | |
820 | break; | |
821 | case PRINT_FLAGS: | |
822 | free_arg(arg->flags.field); | |
823 | free(arg->flags.delim); | |
824 | free_flag_sym(arg->flags.flags); | |
825 | break; | |
826 | case PRINT_SYMBOL: | |
827 | free_arg(arg->symbol.field); | |
828 | free_flag_sym(arg->symbol.symbols); | |
829 | break; | |
e080e6f1 NK |
830 | case PRINT_HEX: |
831 | free_arg(arg->hex.field); | |
832 | free_arg(arg->hex.size); | |
833 | break; | |
b839e1e8 JM |
834 | case PRINT_INT_ARRAY: |
835 | free_arg(arg->int_array.field); | |
836 | free_arg(arg->int_array.count); | |
837 | free_arg(arg->int_array.el_size); | |
838 | break; | |
f7d82350 SR |
839 | case PRINT_TYPE: |
840 | free(arg->typecast.type); | |
841 | free_arg(arg->typecast.item); | |
842 | break; | |
843 | case PRINT_STRING: | |
844 | case PRINT_BSTRING: | |
845 | free(arg->string.string); | |
846 | break; | |
473a778a SRRH |
847 | case PRINT_BITMASK: |
848 | free(arg->bitmask.bitmask); | |
849 | break; | |
f7d82350 | 850 | case PRINT_DYNAMIC_ARRAY: |
76055940 | 851 | case PRINT_DYNAMIC_ARRAY_LEN: |
f7d82350 SR |
852 | free(arg->dynarray.index); |
853 | break; | |
854 | case PRINT_OP: | |
855 | free(arg->op.op); | |
856 | free_arg(arg->op.left); | |
857 | free_arg(arg->op.right); | |
858 | break; | |
859 | case PRINT_FUNC: | |
860 | while (arg->func.args) { | |
861 | farg = arg->func.args; | |
862 | arg->func.args = farg->next; | |
863 | free_arg(farg); | |
864 | } | |
865 | break; | |
866 | ||
867 | case PRINT_NULL: | |
868 | default: | |
869 | break; | |
870 | } | |
871 | ||
872 | free(arg); | |
873 | } | |
874 | ||
875 | static enum event_type get_type(int ch) | |
876 | { | |
877 | if (ch == '\n') | |
878 | return EVENT_NEWLINE; | |
879 | if (isspace(ch)) | |
880 | return EVENT_SPACE; | |
881 | if (isalnum(ch) || ch == '_') | |
882 | return EVENT_ITEM; | |
883 | if (ch == '\'') | |
884 | return EVENT_SQUOTE; | |
885 | if (ch == '"') | |
886 | return EVENT_DQUOTE; | |
887 | if (!isprint(ch)) | |
888 | return EVENT_NONE; | |
889 | if (ch == '(' || ch == ')' || ch == ',') | |
890 | return EVENT_DELIM; | |
891 | ||
892 | return EVENT_OP; | |
893 | } | |
894 | ||
895 | static int __read_char(void) | |
896 | { | |
897 | if (input_buf_ptr >= input_buf_siz) | |
898 | return -1; | |
899 | ||
900 | return input_buf[input_buf_ptr++]; | |
901 | } | |
902 | ||
903 | static int __peek_char(void) | |
904 | { | |
905 | if (input_buf_ptr >= input_buf_siz) | |
906 | return -1; | |
907 | ||
908 | return input_buf[input_buf_ptr]; | |
909 | } | |
910 | ||
911 | /** | |
912 | * pevent_peek_char - peek at the next character that will be read | |
913 | * | |
914 | * Returns the next character read, or -1 if end of buffer. | |
915 | */ | |
916 | int pevent_peek_char(void) | |
917 | { | |
918 | return __peek_char(); | |
919 | } | |
920 | ||
deba3fb2 NK |
921 | static int extend_token(char **tok, char *buf, int size) |
922 | { | |
923 | char *newtok = realloc(*tok, size); | |
924 | ||
925 | if (!newtok) { | |
926 | free(*tok); | |
927 | *tok = NULL; | |
928 | return -1; | |
929 | } | |
930 | ||
931 | if (!*tok) | |
932 | strcpy(newtok, buf); | |
933 | else | |
934 | strcat(newtok, buf); | |
935 | *tok = newtok; | |
936 | ||
937 | return 0; | |
938 | } | |
939 | ||
f7d82350 SR |
940 | static enum event_type force_token(const char *str, char **tok); |
941 | ||
942 | static enum event_type __read_token(char **tok) | |
943 | { | |
944 | char buf[BUFSIZ]; | |
945 | int ch, last_ch, quote_ch, next_ch; | |
946 | int i = 0; | |
947 | int tok_size = 0; | |
948 | enum event_type type; | |
949 | ||
950 | *tok = NULL; | |
951 | ||
952 | ||
953 | ch = __read_char(); | |
954 | if (ch < 0) | |
955 | return EVENT_NONE; | |
956 | ||
957 | type = get_type(ch); | |
958 | if (type == EVENT_NONE) | |
959 | return type; | |
960 | ||
961 | buf[i++] = ch; | |
962 | ||
963 | switch (type) { | |
964 | case EVENT_NEWLINE: | |
965 | case EVENT_DELIM: | |
0dbca1e3 ACM |
966 | if (asprintf(tok, "%c", ch) < 0) |
967 | return EVENT_ERROR; | |
968 | ||
f7d82350 SR |
969 | return type; |
970 | ||
971 | case EVENT_OP: | |
972 | switch (ch) { | |
973 | case '-': | |
974 | next_ch = __peek_char(); | |
975 | if (next_ch == '>') { | |
976 | buf[i++] = __read_char(); | |
977 | break; | |
978 | } | |
979 | /* fall through */ | |
980 | case '+': | |
981 | case '|': | |
982 | case '&': | |
983 | case '>': | |
984 | case '<': | |
985 | last_ch = ch; | |
986 | ch = __peek_char(); | |
987 | if (ch != last_ch) | |
988 | goto test_equal; | |
989 | buf[i++] = __read_char(); | |
990 | switch (last_ch) { | |
991 | case '>': | |
992 | case '<': | |
993 | goto test_equal; | |
994 | default: | |
995 | break; | |
996 | } | |
997 | break; | |
998 | case '!': | |
999 | case '=': | |
1000 | goto test_equal; | |
1001 | default: /* what should we do instead? */ | |
1002 | break; | |
1003 | } | |
1004 | buf[i] = 0; | |
1005 | *tok = strdup(buf); | |
1006 | return type; | |
1007 | ||
1008 | test_equal: | |
1009 | ch = __peek_char(); | |
1010 | if (ch == '=') | |
1011 | buf[i++] = __read_char(); | |
1012 | goto out; | |
1013 | ||
1014 | case EVENT_DQUOTE: | |
1015 | case EVENT_SQUOTE: | |
1016 | /* don't keep quotes */ | |
1017 | i--; | |
1018 | quote_ch = ch; | |
1019 | last_ch = 0; | |
1020 | concat: | |
1021 | do { | |
1022 | if (i == (BUFSIZ - 1)) { | |
1023 | buf[i] = 0; | |
f7d82350 | 1024 | tok_size += BUFSIZ; |
deba3fb2 NK |
1025 | |
1026 | if (extend_token(tok, buf, tok_size) < 0) | |
1027 | return EVENT_NONE; | |
f7d82350 SR |
1028 | i = 0; |
1029 | } | |
1030 | last_ch = ch; | |
1031 | ch = __read_char(); | |
1032 | buf[i++] = ch; | |
1033 | /* the '\' '\' will cancel itself */ | |
1034 | if (ch == '\\' && last_ch == '\\') | |
1035 | last_ch = 0; | |
1036 | } while (ch != quote_ch || last_ch == '\\'); | |
1037 | /* remove the last quote */ | |
1038 | i--; | |
1039 | ||
1040 | /* | |
1041 | * For strings (double quotes) check the next token. | |
1042 | * If it is another string, concatinate the two. | |
1043 | */ | |
1044 | if (type == EVENT_DQUOTE) { | |
1045 | unsigned long long save_input_buf_ptr = input_buf_ptr; | |
1046 | ||
1047 | do { | |
1048 | ch = __read_char(); | |
1049 | } while (isspace(ch)); | |
1050 | if (ch == '"') | |
1051 | goto concat; | |
1052 | input_buf_ptr = save_input_buf_ptr; | |
1053 | } | |
1054 | ||
1055 | goto out; | |
1056 | ||
1057 | case EVENT_ERROR ... EVENT_SPACE: | |
1058 | case EVENT_ITEM: | |
1059 | default: | |
1060 | break; | |
1061 | } | |
1062 | ||
1063 | while (get_type(__peek_char()) == type) { | |
1064 | if (i == (BUFSIZ - 1)) { | |
1065 | buf[i] = 0; | |
deba3fb2 | 1066 | tok_size += BUFSIZ; |
f7d82350 | 1067 | |
deba3fb2 | 1068 | if (extend_token(tok, buf, tok_size) < 0) |
f7d82350 | 1069 | return EVENT_NONE; |
f7d82350 SR |
1070 | i = 0; |
1071 | } | |
1072 | ch = __read_char(); | |
1073 | buf[i++] = ch; | |
1074 | } | |
1075 | ||
1076 | out: | |
1077 | buf[i] = 0; | |
deba3fb2 | 1078 | if (extend_token(tok, buf, tok_size + i + 1) < 0) |
f7d82350 SR |
1079 | return EVENT_NONE; |
1080 | ||
1081 | if (type == EVENT_ITEM) { | |
1082 | /* | |
1083 | * Older versions of the kernel has a bug that | |
1084 | * creates invalid symbols and will break the mac80211 | |
1085 | * parsing. This is a work around to that bug. | |
1086 | * | |
1087 | * See Linux kernel commit: | |
1088 | * 811cb50baf63461ce0bdb234927046131fc7fa8b | |
1089 | */ | |
1090 | if (strcmp(*tok, "LOCAL_PR_FMT") == 0) { | |
1091 | free(*tok); | |
1092 | *tok = NULL; | |
1093 | return force_token("\"\%s\" ", tok); | |
1094 | } else if (strcmp(*tok, "STA_PR_FMT") == 0) { | |
1095 | free(*tok); | |
1096 | *tok = NULL; | |
1097 | return force_token("\" sta:%pM\" ", tok); | |
1098 | } else if (strcmp(*tok, "VIF_PR_FMT") == 0) { | |
1099 | free(*tok); | |
1100 | *tok = NULL; | |
1101 | return force_token("\" vif:%p(%d)\" ", tok); | |
1102 | } | |
1103 | } | |
1104 | ||
1105 | return type; | |
1106 | } | |
1107 | ||
1108 | static enum event_type force_token(const char *str, char **tok) | |
1109 | { | |
1110 | const char *save_input_buf; | |
1111 | unsigned long long save_input_buf_ptr; | |
1112 | unsigned long long save_input_buf_siz; | |
1113 | enum event_type type; | |
1114 | ||
1115 | /* save off the current input pointers */ | |
1116 | save_input_buf = input_buf; | |
1117 | save_input_buf_ptr = input_buf_ptr; | |
1118 | save_input_buf_siz = input_buf_siz; | |
1119 | ||
1120 | init_input_buf(str, strlen(str)); | |
1121 | ||
1122 | type = __read_token(tok); | |
1123 | ||
1124 | /* reset back to original token */ | |
1125 | input_buf = save_input_buf; | |
1126 | input_buf_ptr = save_input_buf_ptr; | |
1127 | input_buf_siz = save_input_buf_siz; | |
1128 | ||
1129 | return type; | |
1130 | } | |
1131 | ||
1132 | static void free_token(char *tok) | |
1133 | { | |
1134 | if (tok) | |
1135 | free(tok); | |
1136 | } | |
1137 | ||
1138 | static enum event_type read_token(char **tok) | |
1139 | { | |
1140 | enum event_type type; | |
1141 | ||
1142 | for (;;) { | |
1143 | type = __read_token(tok); | |
1144 | if (type != EVENT_SPACE) | |
1145 | return type; | |
1146 | ||
1147 | free_token(*tok); | |
1148 | } | |
1149 | ||
1150 | /* not reached */ | |
1151 | *tok = NULL; | |
1152 | return EVENT_NONE; | |
1153 | } | |
1154 | ||
1155 | /** | |
1156 | * pevent_read_token - access to utilites to use the pevent parser | |
1157 | * @tok: The token to return | |
1158 | * | |
1159 | * This will parse tokens from the string given by | |
1160 | * pevent_init_data(). | |
1161 | * | |
1162 | * Returns the token type. | |
1163 | */ | |
1164 | enum event_type pevent_read_token(char **tok) | |
1165 | { | |
1166 | return read_token(tok); | |
1167 | } | |
1168 | ||
1169 | /** | |
1170 | * pevent_free_token - free a token returned by pevent_read_token | |
1171 | * @token: the token to free | |
1172 | */ | |
1173 | void pevent_free_token(char *token) | |
1174 | { | |
1175 | free_token(token); | |
1176 | } | |
1177 | ||
1178 | /* no newline */ | |
1179 | static enum event_type read_token_item(char **tok) | |
1180 | { | |
1181 | enum event_type type; | |
1182 | ||
1183 | for (;;) { | |
1184 | type = __read_token(tok); | |
1185 | if (type != EVENT_SPACE && type != EVENT_NEWLINE) | |
1186 | return type; | |
1187 | free_token(*tok); | |
1188 | *tok = NULL; | |
1189 | } | |
1190 | ||
1191 | /* not reached */ | |
1192 | *tok = NULL; | |
1193 | return EVENT_NONE; | |
1194 | } | |
1195 | ||
1196 | static int test_type(enum event_type type, enum event_type expect) | |
1197 | { | |
1198 | if (type != expect) { | |
1199 | do_warning("Error: expected type %d but read %d", | |
1200 | expect, type); | |
1201 | return -1; | |
1202 | } | |
1203 | return 0; | |
1204 | } | |
1205 | ||
1206 | static int test_type_token(enum event_type type, const char *token, | |
1207 | enum event_type expect, const char *expect_tok) | |
1208 | { | |
1209 | if (type != expect) { | |
1210 | do_warning("Error: expected type %d but read %d", | |
1211 | expect, type); | |
1212 | return -1; | |
1213 | } | |
1214 | ||
1215 | if (strcmp(token, expect_tok) != 0) { | |
1216 | do_warning("Error: expected '%s' but read '%s'", | |
1217 | expect_tok, token); | |
1218 | return -1; | |
1219 | } | |
1220 | return 0; | |
1221 | } | |
1222 | ||
1223 | static int __read_expect_type(enum event_type expect, char **tok, int newline_ok) | |
1224 | { | |
1225 | enum event_type type; | |
1226 | ||
1227 | if (newline_ok) | |
1228 | type = read_token(tok); | |
1229 | else | |
1230 | type = read_token_item(tok); | |
1231 | return test_type(type, expect); | |
1232 | } | |
1233 | ||
1234 | static int read_expect_type(enum event_type expect, char **tok) | |
1235 | { | |
1236 | return __read_expect_type(expect, tok, 1); | |
1237 | } | |
1238 | ||
1239 | static int __read_expected(enum event_type expect, const char *str, | |
1240 | int newline_ok) | |
1241 | { | |
1242 | enum event_type type; | |
1243 | char *token; | |
1244 | int ret; | |
1245 | ||
1246 | if (newline_ok) | |
1247 | type = read_token(&token); | |
1248 | else | |
1249 | type = read_token_item(&token); | |
1250 | ||
1251 | ret = test_type_token(type, token, expect, str); | |
1252 | ||
1253 | free_token(token); | |
1254 | ||
1255 | return ret; | |
1256 | } | |
1257 | ||
1258 | static int read_expected(enum event_type expect, const char *str) | |
1259 | { | |
1260 | return __read_expected(expect, str, 1); | |
1261 | } | |
1262 | ||
1263 | static int read_expected_item(enum event_type expect, const char *str) | |
1264 | { | |
1265 | return __read_expected(expect, str, 0); | |
1266 | } | |
1267 | ||
1268 | static char *event_read_name(void) | |
1269 | { | |
1270 | char *token; | |
1271 | ||
1272 | if (read_expected(EVENT_ITEM, "name") < 0) | |
1273 | return NULL; | |
1274 | ||
1275 | if (read_expected(EVENT_OP, ":") < 0) | |
1276 | return NULL; | |
1277 | ||
1278 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
1279 | goto fail; | |
1280 | ||
1281 | return token; | |
1282 | ||
1283 | fail: | |
1284 | free_token(token); | |
1285 | return NULL; | |
1286 | } | |
1287 | ||
1288 | static int event_read_id(void) | |
1289 | { | |
1290 | char *token; | |
1291 | int id; | |
1292 | ||
1293 | if (read_expected_item(EVENT_ITEM, "ID") < 0) | |
1294 | return -1; | |
1295 | ||
1296 | if (read_expected(EVENT_OP, ":") < 0) | |
1297 | return -1; | |
1298 | ||
1299 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
1300 | goto fail; | |
1301 | ||
1302 | id = strtoul(token, NULL, 0); | |
1303 | free_token(token); | |
1304 | return id; | |
1305 | ||
1306 | fail: | |
1307 | free_token(token); | |
1308 | return -1; | |
1309 | } | |
1310 | ||
1311 | static int field_is_string(struct format_field *field) | |
1312 | { | |
1313 | if ((field->flags & FIELD_IS_ARRAY) && | |
1314 | (strstr(field->type, "char") || strstr(field->type, "u8") || | |
1315 | strstr(field->type, "s8"))) | |
1316 | return 1; | |
1317 | ||
1318 | return 0; | |
1319 | } | |
1320 | ||
1321 | static int field_is_dynamic(struct format_field *field) | |
1322 | { | |
1323 | if (strncmp(field->type, "__data_loc", 10) == 0) | |
1324 | return 1; | |
1325 | ||
1326 | return 0; | |
1327 | } | |
1328 | ||
1329 | static int field_is_long(struct format_field *field) | |
1330 | { | |
1331 | /* includes long long */ | |
1332 | if (strstr(field->type, "long")) | |
1333 | return 1; | |
1334 | ||
1335 | return 0; | |
1336 | } | |
1337 | ||
e23c1a55 JO |
1338 | static unsigned int type_size(const char *name) |
1339 | { | |
1340 | /* This covers all FIELD_IS_STRING types. */ | |
1341 | static struct { | |
1342 | const char *type; | |
1343 | unsigned int size; | |
1344 | } table[] = { | |
1345 | { "u8", 1 }, | |
1346 | { "u16", 2 }, | |
1347 | { "u32", 4 }, | |
1348 | { "u64", 8 }, | |
1349 | { "s8", 1 }, | |
1350 | { "s16", 2 }, | |
1351 | { "s32", 4 }, | |
1352 | { "s64", 8 }, | |
1353 | { "char", 1 }, | |
1354 | { }, | |
1355 | }; | |
1356 | int i; | |
1357 | ||
1358 | for (i = 0; table[i].type; i++) { | |
1359 | if (!strcmp(table[i].type, name)) | |
1360 | return table[i].size; | |
1361 | } | |
1362 | ||
1363 | return 0; | |
1364 | } | |
1365 | ||
f7d82350 SR |
1366 | static int event_read_fields(struct event_format *event, struct format_field **fields) |
1367 | { | |
1368 | struct format_field *field = NULL; | |
1369 | enum event_type type; | |
1370 | char *token; | |
1371 | char *last_token; | |
1372 | int count = 0; | |
1373 | ||
1374 | do { | |
e23c1a55 JO |
1375 | unsigned int size_dynamic = 0; |
1376 | ||
f7d82350 SR |
1377 | type = read_token(&token); |
1378 | if (type == EVENT_NEWLINE) { | |
1379 | free_token(token); | |
1380 | return count; | |
1381 | } | |
1382 | ||
1383 | count++; | |
1384 | ||
1385 | if (test_type_token(type, token, EVENT_ITEM, "field")) | |
1386 | goto fail; | |
1387 | free_token(token); | |
1388 | ||
1389 | type = read_token(&token); | |
1390 | /* | |
1391 | * The ftrace fields may still use the "special" name. | |
1392 | * Just ignore it. | |
1393 | */ | |
1394 | if (event->flags & EVENT_FL_ISFTRACE && | |
1395 | type == EVENT_ITEM && strcmp(token, "special") == 0) { | |
1396 | free_token(token); | |
1397 | type = read_token(&token); | |
1398 | } | |
1399 | ||
1400 | if (test_type_token(type, token, EVENT_OP, ":") < 0) | |
1401 | goto fail; | |
1402 | ||
1403 | free_token(token); | |
1404 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
1405 | goto fail; | |
1406 | ||
1407 | last_token = token; | |
1408 | ||
87162d81 ACM |
1409 | field = calloc(1, sizeof(*field)); |
1410 | if (!field) | |
1411 | goto fail; | |
1412 | ||
f7d82350 SR |
1413 | field->event = event; |
1414 | ||
1415 | /* read the rest of the type */ | |
1416 | for (;;) { | |
1417 | type = read_token(&token); | |
1418 | if (type == EVENT_ITEM || | |
1419 | (type == EVENT_OP && strcmp(token, "*") == 0) || | |
1420 | /* | |
1421 | * Some of the ftrace fields are broken and have | |
1422 | * an illegal "." in them. | |
1423 | */ | |
1424 | (event->flags & EVENT_FL_ISFTRACE && | |
1425 | type == EVENT_OP && strcmp(token, ".") == 0)) { | |
1426 | ||
1427 | if (strcmp(token, "*") == 0) | |
1428 | field->flags |= FIELD_IS_POINTER; | |
1429 | ||
1430 | if (field->type) { | |
d286447f NK |
1431 | char *new_type; |
1432 | new_type = realloc(field->type, | |
1433 | strlen(field->type) + | |
1434 | strlen(last_token) + 2); | |
1435 | if (!new_type) { | |
1436 | free(last_token); | |
1437 | goto fail; | |
1438 | } | |
1439 | field->type = new_type; | |
f7d82350 SR |
1440 | strcat(field->type, " "); |
1441 | strcat(field->type, last_token); | |
1442 | free(last_token); | |
1443 | } else | |
1444 | field->type = last_token; | |
1445 | last_token = token; | |
1446 | continue; | |
1447 | } | |
1448 | ||
1449 | break; | |
1450 | } | |
1451 | ||
1452 | if (!field->type) { | |
3388cc3e | 1453 | do_warning_event(event, "%s: no type found", __func__); |
f7d82350 SR |
1454 | goto fail; |
1455 | } | |
d3542436 | 1456 | field->name = field->alias = last_token; |
f7d82350 SR |
1457 | |
1458 | if (test_type(type, EVENT_OP)) | |
1459 | goto fail; | |
1460 | ||
1461 | if (strcmp(token, "[") == 0) { | |
1462 | enum event_type last_type = type; | |
1463 | char *brackets = token; | |
d286447f | 1464 | char *new_brackets; |
f7d82350 SR |
1465 | int len; |
1466 | ||
1467 | field->flags |= FIELD_IS_ARRAY; | |
1468 | ||
1469 | type = read_token(&token); | |
1470 | ||
1471 | if (type == EVENT_ITEM) | |
1472 | field->arraylen = strtoul(token, NULL, 0); | |
1473 | else | |
1474 | field->arraylen = 0; | |
1475 | ||
1476 | while (strcmp(token, "]") != 0) { | |
1477 | if (last_type == EVENT_ITEM && | |
1478 | type == EVENT_ITEM) | |
1479 | len = 2; | |
1480 | else | |
1481 | len = 1; | |
1482 | last_type = type; | |
1483 | ||
d286447f NK |
1484 | new_brackets = realloc(brackets, |
1485 | strlen(brackets) + | |
1486 | strlen(token) + len); | |
1487 | if (!new_brackets) { | |
1488 | free(brackets); | |
1489 | goto fail; | |
1490 | } | |
1491 | brackets = new_brackets; | |
f7d82350 SR |
1492 | if (len == 2) |
1493 | strcat(brackets, " "); | |
1494 | strcat(brackets, token); | |
1495 | /* We only care about the last token */ | |
1496 | field->arraylen = strtoul(token, NULL, 0); | |
1497 | free_token(token); | |
1498 | type = read_token(&token); | |
1499 | if (type == EVENT_NONE) { | |
3388cc3e | 1500 | do_warning_event(event, "failed to find token"); |
f7d82350 SR |
1501 | goto fail; |
1502 | } | |
1503 | } | |
1504 | ||
1505 | free_token(token); | |
1506 | ||
d286447f NK |
1507 | new_brackets = realloc(brackets, strlen(brackets) + 2); |
1508 | if (!new_brackets) { | |
1509 | free(brackets); | |
1510 | goto fail; | |
1511 | } | |
1512 | brackets = new_brackets; | |
f7d82350 SR |
1513 | strcat(brackets, "]"); |
1514 | ||
1515 | /* add brackets to type */ | |
1516 | ||
1517 | type = read_token(&token); | |
1518 | /* | |
1519 | * If the next token is not an OP, then it is of | |
1520 | * the format: type [] item; | |
1521 | */ | |
1522 | if (type == EVENT_ITEM) { | |
d286447f NK |
1523 | char *new_type; |
1524 | new_type = realloc(field->type, | |
1525 | strlen(field->type) + | |
1526 | strlen(field->name) + | |
1527 | strlen(brackets) + 2); | |
1528 | if (!new_type) { | |
1529 | free(brackets); | |
1530 | goto fail; | |
1531 | } | |
1532 | field->type = new_type; | |
f7d82350 SR |
1533 | strcat(field->type, " "); |
1534 | strcat(field->type, field->name); | |
e23c1a55 | 1535 | size_dynamic = type_size(field->name); |
f7d82350 SR |
1536 | free_token(field->name); |
1537 | strcat(field->type, brackets); | |
d3542436 | 1538 | field->name = field->alias = token; |
f7d82350 SR |
1539 | type = read_token(&token); |
1540 | } else { | |
d286447f NK |
1541 | char *new_type; |
1542 | new_type = realloc(field->type, | |
1543 | strlen(field->type) + | |
1544 | strlen(brackets) + 1); | |
1545 | if (!new_type) { | |
1546 | free(brackets); | |
1547 | goto fail; | |
1548 | } | |
1549 | field->type = new_type; | |
f7d82350 SR |
1550 | strcat(field->type, brackets); |
1551 | } | |
1552 | free(brackets); | |
1553 | } | |
1554 | ||
1555 | if (field_is_string(field)) | |
1556 | field->flags |= FIELD_IS_STRING; | |
1557 | if (field_is_dynamic(field)) | |
1558 | field->flags |= FIELD_IS_DYNAMIC; | |
1559 | if (field_is_long(field)) | |
1560 | field->flags |= FIELD_IS_LONG; | |
1561 | ||
1562 | if (test_type_token(type, token, EVENT_OP, ";")) | |
1563 | goto fail; | |
1564 | free_token(token); | |
1565 | ||
1566 | if (read_expected(EVENT_ITEM, "offset") < 0) | |
1567 | goto fail_expect; | |
1568 | ||
1569 | if (read_expected(EVENT_OP, ":") < 0) | |
1570 | goto fail_expect; | |
1571 | ||
1572 | if (read_expect_type(EVENT_ITEM, &token)) | |
1573 | goto fail; | |
1574 | field->offset = strtoul(token, NULL, 0); | |
1575 | free_token(token); | |
1576 | ||
1577 | if (read_expected(EVENT_OP, ";") < 0) | |
1578 | goto fail_expect; | |
1579 | ||
1580 | if (read_expected(EVENT_ITEM, "size") < 0) | |
1581 | goto fail_expect; | |
1582 | ||
1583 | if (read_expected(EVENT_OP, ":") < 0) | |
1584 | goto fail_expect; | |
1585 | ||
1586 | if (read_expect_type(EVENT_ITEM, &token)) | |
1587 | goto fail; | |
1588 | field->size = strtoul(token, NULL, 0); | |
1589 | free_token(token); | |
1590 | ||
1591 | if (read_expected(EVENT_OP, ";") < 0) | |
1592 | goto fail_expect; | |
1593 | ||
1594 | type = read_token(&token); | |
1595 | if (type != EVENT_NEWLINE) { | |
1596 | /* newer versions of the kernel have a "signed" type */ | |
1597 | if (test_type_token(type, token, EVENT_ITEM, "signed")) | |
1598 | goto fail; | |
1599 | ||
1600 | free_token(token); | |
1601 | ||
1602 | if (read_expected(EVENT_OP, ":") < 0) | |
1603 | goto fail_expect; | |
1604 | ||
1605 | if (read_expect_type(EVENT_ITEM, &token)) | |
1606 | goto fail; | |
1607 | ||
10ee9fa3 TZ |
1608 | if (strtoul(token, NULL, 0)) |
1609 | field->flags |= FIELD_IS_SIGNED; | |
f7d82350 SR |
1610 | |
1611 | free_token(token); | |
1612 | if (read_expected(EVENT_OP, ";") < 0) | |
1613 | goto fail_expect; | |
1614 | ||
1615 | if (read_expect_type(EVENT_NEWLINE, &token)) | |
1616 | goto fail; | |
1617 | } | |
1618 | ||
1619 | free_token(token); | |
1620 | ||
1621 | if (field->flags & FIELD_IS_ARRAY) { | |
1622 | if (field->arraylen) | |
1623 | field->elementsize = field->size / field->arraylen; | |
e23c1a55 JO |
1624 | else if (field->flags & FIELD_IS_DYNAMIC) |
1625 | field->elementsize = size_dynamic; | |
f7d82350 SR |
1626 | else if (field->flags & FIELD_IS_STRING) |
1627 | field->elementsize = 1; | |
e23c1a55 JO |
1628 | else if (field->flags & FIELD_IS_LONG) |
1629 | field->elementsize = event->pevent ? | |
1630 | event->pevent->long_size : | |
1631 | sizeof(long); | |
f7d82350 SR |
1632 | } else |
1633 | field->elementsize = field->size; | |
1634 | ||
1635 | *fields = field; | |
1636 | fields = &field->next; | |
1637 | ||
1638 | } while (1); | |
1639 | ||
1640 | return 0; | |
1641 | ||
1642 | fail: | |
1643 | free_token(token); | |
1644 | fail_expect: | |
57d34dc5 NK |
1645 | if (field) { |
1646 | free(field->type); | |
1647 | free(field->name); | |
f7d82350 | 1648 | free(field); |
57d34dc5 | 1649 | } |
f7d82350 SR |
1650 | return -1; |
1651 | } | |
1652 | ||
1653 | static int event_read_format(struct event_format *event) | |
1654 | { | |
1655 | char *token; | |
1656 | int ret; | |
1657 | ||
1658 | if (read_expected_item(EVENT_ITEM, "format") < 0) | |
1659 | return -1; | |
1660 | ||
1661 | if (read_expected(EVENT_OP, ":") < 0) | |
1662 | return -1; | |
1663 | ||
1664 | if (read_expect_type(EVENT_NEWLINE, &token)) | |
1665 | goto fail; | |
1666 | free_token(token); | |
1667 | ||
1668 | ret = event_read_fields(event, &event->format.common_fields); | |
1669 | if (ret < 0) | |
1670 | return ret; | |
1671 | event->format.nr_common = ret; | |
1672 | ||
1673 | ret = event_read_fields(event, &event->format.fields); | |
1674 | if (ret < 0) | |
1675 | return ret; | |
1676 | event->format.nr_fields = ret; | |
1677 | ||
1678 | return 0; | |
1679 | ||
1680 | fail: | |
1681 | free_token(token); | |
1682 | return -1; | |
1683 | } | |
1684 | ||
1685 | static enum event_type | |
1686 | process_arg_token(struct event_format *event, struct print_arg *arg, | |
1687 | char **tok, enum event_type type); | |
1688 | ||
1689 | static enum event_type | |
1690 | process_arg(struct event_format *event, struct print_arg *arg, char **tok) | |
1691 | { | |
1692 | enum event_type type; | |
1693 | char *token; | |
1694 | ||
1695 | type = read_token(&token); | |
1696 | *tok = token; | |
1697 | ||
1698 | return process_arg_token(event, arg, tok, type); | |
1699 | } | |
1700 | ||
1701 | static enum event_type | |
1702 | process_op(struct event_format *event, struct print_arg *arg, char **tok); | |
1703 | ||
eff2c92f SR |
1704 | /* |
1705 | * For __print_symbolic() and __print_flags, we need to completely | |
1706 | * evaluate the first argument, which defines what to print next. | |
1707 | */ | |
1708 | static enum event_type | |
1709 | process_field_arg(struct event_format *event, struct print_arg *arg, char **tok) | |
1710 | { | |
1711 | enum event_type type; | |
1712 | ||
1713 | type = process_arg(event, arg, tok); | |
1714 | ||
1715 | while (type == EVENT_OP) { | |
1716 | type = process_op(event, arg, tok); | |
1717 | } | |
1718 | ||
1719 | return type; | |
1720 | } | |
1721 | ||
f7d82350 SR |
1722 | static enum event_type |
1723 | process_cond(struct event_format *event, struct print_arg *top, char **tok) | |
1724 | { | |
1725 | struct print_arg *arg, *left, *right; | |
1726 | enum event_type type; | |
1727 | char *token = NULL; | |
1728 | ||
1729 | arg = alloc_arg(); | |
1730 | left = alloc_arg(); | |
1731 | right = alloc_arg(); | |
1732 | ||
b1ac754b | 1733 | if (!arg || !left || !right) { |
3388cc3e | 1734 | do_warning_event(event, "%s: not enough memory!", __func__); |
b1ac754b NK |
1735 | /* arg will be freed at out_free */ |
1736 | free_arg(left); | |
1737 | free_arg(right); | |
1738 | goto out_free; | |
1739 | } | |
1740 | ||
f7d82350 SR |
1741 | arg->type = PRINT_OP; |
1742 | arg->op.left = left; | |
1743 | arg->op.right = right; | |
1744 | ||
1745 | *tok = NULL; | |
1746 | type = process_arg(event, left, &token); | |
1747 | ||
1748 | again: | |
6f56e9cf DN |
1749 | if (type == EVENT_ERROR) |
1750 | goto out_free; | |
1751 | ||
f7d82350 SR |
1752 | /* Handle other operations in the arguments */ |
1753 | if (type == EVENT_OP && strcmp(token, ":") != 0) { | |
1754 | type = process_op(event, left, &token); | |
1755 | goto again; | |
1756 | } | |
1757 | ||
1758 | if (test_type_token(type, token, EVENT_OP, ":")) | |
1759 | goto out_free; | |
1760 | ||
1761 | arg->op.op = token; | |
1762 | ||
1763 | type = process_arg(event, right, &token); | |
1764 | ||
1765 | top->op.right = arg; | |
1766 | ||
1767 | *tok = token; | |
1768 | return type; | |
1769 | ||
1770 | out_free: | |
1771 | /* Top may point to itself */ | |
1772 | top->op.right = NULL; | |
1773 | free_token(token); | |
1774 | free_arg(arg); | |
1775 | return EVENT_ERROR; | |
1776 | } | |
1777 | ||
1778 | static enum event_type | |
1779 | process_array(struct event_format *event, struct print_arg *top, char **tok) | |
1780 | { | |
1781 | struct print_arg *arg; | |
1782 | enum event_type type; | |
1783 | char *token = NULL; | |
1784 | ||
1785 | arg = alloc_arg(); | |
b1ac754b | 1786 | if (!arg) { |
3388cc3e | 1787 | do_warning_event(event, "%s: not enough memory!", __func__); |
b1ac754b NK |
1788 | /* '*tok' is set to top->op.op. No need to free. */ |
1789 | *tok = NULL; | |
1790 | return EVENT_ERROR; | |
1791 | } | |
f7d82350 SR |
1792 | |
1793 | *tok = NULL; | |
1794 | type = process_arg(event, arg, &token); | |
1795 | if (test_type_token(type, token, EVENT_OP, "]")) | |
1796 | goto out_free; | |
1797 | ||
1798 | top->op.right = arg; | |
1799 | ||
1800 | free_token(token); | |
1801 | type = read_token_item(&token); | |
1802 | *tok = token; | |
1803 | ||
1804 | return type; | |
1805 | ||
1806 | out_free: | |
1bce6e0f | 1807 | free_token(token); |
f7d82350 SR |
1808 | free_arg(arg); |
1809 | return EVENT_ERROR; | |
1810 | } | |
1811 | ||
1812 | static int get_op_prio(char *op) | |
1813 | { | |
1814 | if (!op[1]) { | |
1815 | switch (op[0]) { | |
1816 | case '~': | |
1817 | case '!': | |
1818 | return 4; | |
1819 | case '*': | |
1820 | case '/': | |
1821 | case '%': | |
1822 | return 6; | |
1823 | case '+': | |
1824 | case '-': | |
1825 | return 7; | |
1826 | /* '>>' and '<<' are 8 */ | |
1827 | case '<': | |
1828 | case '>': | |
1829 | return 9; | |
1830 | /* '==' and '!=' are 10 */ | |
1831 | case '&': | |
1832 | return 11; | |
1833 | case '^': | |
1834 | return 12; | |
1835 | case '|': | |
1836 | return 13; | |
1837 | case '?': | |
1838 | return 16; | |
1839 | default: | |
14ffde0e | 1840 | do_warning("unknown op '%c'", op[0]); |
f7d82350 SR |
1841 | return -1; |
1842 | } | |
1843 | } else { | |
1844 | if (strcmp(op, "++") == 0 || | |
1845 | strcmp(op, "--") == 0) { | |
1846 | return 3; | |
1847 | } else if (strcmp(op, ">>") == 0 || | |
1848 | strcmp(op, "<<") == 0) { | |
1849 | return 8; | |
1850 | } else if (strcmp(op, ">=") == 0 || | |
1851 | strcmp(op, "<=") == 0) { | |
1852 | return 9; | |
1853 | } else if (strcmp(op, "==") == 0 || | |
1854 | strcmp(op, "!=") == 0) { | |
1855 | return 10; | |
1856 | } else if (strcmp(op, "&&") == 0) { | |
1857 | return 14; | |
1858 | } else if (strcmp(op, "||") == 0) { | |
1859 | return 15; | |
1860 | } else { | |
14ffde0e | 1861 | do_warning("unknown op '%s'", op); |
f7d82350 SR |
1862 | return -1; |
1863 | } | |
1864 | } | |
1865 | } | |
1866 | ||
14ffde0e | 1867 | static int set_op_prio(struct print_arg *arg) |
f7d82350 SR |
1868 | { |
1869 | ||
1870 | /* single ops are the greatest */ | |
14ffde0e | 1871 | if (!arg->op.left || arg->op.left->type == PRINT_NULL) |
f7d82350 | 1872 | arg->op.prio = 0; |
14ffde0e VN |
1873 | else |
1874 | arg->op.prio = get_op_prio(arg->op.op); | |
f7d82350 | 1875 | |
14ffde0e | 1876 | return arg->op.prio; |
f7d82350 SR |
1877 | } |
1878 | ||
1879 | /* Note, *tok does not get freed, but will most likely be saved */ | |
1880 | static enum event_type | |
1881 | process_op(struct event_format *event, struct print_arg *arg, char **tok) | |
1882 | { | |
1883 | struct print_arg *left, *right = NULL; | |
1884 | enum event_type type; | |
1885 | char *token; | |
1886 | ||
1887 | /* the op is passed in via tok */ | |
1888 | token = *tok; | |
1889 | ||
1890 | if (arg->type == PRINT_OP && !arg->op.left) { | |
1891 | /* handle single op */ | |
1892 | if (token[1]) { | |
3388cc3e | 1893 | do_warning_event(event, "bad op token %s", token); |
f7d82350 SR |
1894 | goto out_free; |
1895 | } | |
1896 | switch (token[0]) { | |
1897 | case '~': | |
1898 | case '!': | |
1899 | case '+': | |
1900 | case '-': | |
1901 | break; | |
1902 | default: | |
3388cc3e | 1903 | do_warning_event(event, "bad op token %s", token); |
f7d82350 SR |
1904 | goto out_free; |
1905 | ||
1906 | } | |
1907 | ||
1908 | /* make an empty left */ | |
1909 | left = alloc_arg(); | |
b1ac754b NK |
1910 | if (!left) |
1911 | goto out_warn_free; | |
1912 | ||
f7d82350 SR |
1913 | left->type = PRINT_NULL; |
1914 | arg->op.left = left; | |
1915 | ||
1916 | right = alloc_arg(); | |
b1ac754b NK |
1917 | if (!right) |
1918 | goto out_warn_free; | |
1919 | ||
f7d82350 SR |
1920 | arg->op.right = right; |
1921 | ||
1922 | /* do not free the token, it belongs to an op */ | |
1923 | *tok = NULL; | |
1924 | type = process_arg(event, right, tok); | |
1925 | ||
1926 | } else if (strcmp(token, "?") == 0) { | |
1927 | ||
1928 | left = alloc_arg(); | |
b1ac754b NK |
1929 | if (!left) |
1930 | goto out_warn_free; | |
1931 | ||
f7d82350 SR |
1932 | /* copy the top arg to the left */ |
1933 | *left = *arg; | |
1934 | ||
1935 | arg->type = PRINT_OP; | |
1936 | arg->op.op = token; | |
1937 | arg->op.left = left; | |
1938 | arg->op.prio = 0; | |
1939 | ||
41e51a28 | 1940 | /* it will set arg->op.right */ |
f7d82350 SR |
1941 | type = process_cond(event, arg, tok); |
1942 | ||
1943 | } else if (strcmp(token, ">>") == 0 || | |
1944 | strcmp(token, "<<") == 0 || | |
1945 | strcmp(token, "&") == 0 || | |
1946 | strcmp(token, "|") == 0 || | |
1947 | strcmp(token, "&&") == 0 || | |
1948 | strcmp(token, "||") == 0 || | |
1949 | strcmp(token, "-") == 0 || | |
1950 | strcmp(token, "+") == 0 || | |
1951 | strcmp(token, "*") == 0 || | |
1952 | strcmp(token, "^") == 0 || | |
1953 | strcmp(token, "/") == 0 || | |
1954 | strcmp(token, "<") == 0 || | |
1955 | strcmp(token, ">") == 0 || | |
ff582680 NK |
1956 | strcmp(token, "<=") == 0 || |
1957 | strcmp(token, ">=") == 0 || | |
f7d82350 SR |
1958 | strcmp(token, "==") == 0 || |
1959 | strcmp(token, "!=") == 0) { | |
1960 | ||
1961 | left = alloc_arg(); | |
b1ac754b NK |
1962 | if (!left) |
1963 | goto out_warn_free; | |
f7d82350 SR |
1964 | |
1965 | /* copy the top arg to the left */ | |
1966 | *left = *arg; | |
1967 | ||
1968 | arg->type = PRINT_OP; | |
1969 | arg->op.op = token; | |
1970 | arg->op.left = left; | |
41e51a28 | 1971 | arg->op.right = NULL; |
f7d82350 | 1972 | |
14ffde0e VN |
1973 | if (set_op_prio(arg) == -1) { |
1974 | event->flags |= EVENT_FL_FAILED; | |
d1de1087 NK |
1975 | /* arg->op.op (= token) will be freed at out_free */ |
1976 | arg->op.op = NULL; | |
14ffde0e VN |
1977 | goto out_free; |
1978 | } | |
f7d82350 SR |
1979 | |
1980 | type = read_token_item(&token); | |
1981 | *tok = token; | |
1982 | ||
1983 | /* could just be a type pointer */ | |
1984 | if ((strcmp(arg->op.op, "*") == 0) && | |
1985 | type == EVENT_DELIM && (strcmp(token, ")") == 0)) { | |
d286447f NK |
1986 | char *new_atom; |
1987 | ||
a6d2a61a | 1988 | if (left->type != PRINT_ATOM) { |
3388cc3e | 1989 | do_warning_event(event, "bad pointer type"); |
a6d2a61a ACM |
1990 | goto out_free; |
1991 | } | |
d286447f | 1992 | new_atom = realloc(left->atom.atom, |
f7d82350 | 1993 | strlen(left->atom.atom) + 3); |
d286447f | 1994 | if (!new_atom) |
b1ac754b | 1995 | goto out_warn_free; |
d286447f NK |
1996 | |
1997 | left->atom.atom = new_atom; | |
f7d82350 SR |
1998 | strcat(left->atom.atom, " *"); |
1999 | free(arg->op.op); | |
2000 | *arg = *left; | |
2001 | free(left); | |
2002 | ||
2003 | return type; | |
2004 | } | |
2005 | ||
2006 | right = alloc_arg(); | |
b1ac754b NK |
2007 | if (!right) |
2008 | goto out_warn_free; | |
2009 | ||
f7d82350 | 2010 | type = process_arg_token(event, right, tok, type); |
6f56e9cf DN |
2011 | if (type == EVENT_ERROR) { |
2012 | free_arg(right); | |
2013 | /* token was freed in process_arg_token() via *tok */ | |
2014 | token = NULL; | |
2015 | goto out_free; | |
2016 | } | |
3201f0dc NK |
2017 | |
2018 | if (right->type == PRINT_OP && | |
2019 | get_op_prio(arg->op.op) < get_op_prio(right->op.op)) { | |
2020 | struct print_arg tmp; | |
2021 | ||
2022 | /* rotate ops according to the priority */ | |
2023 | arg->op.right = right->op.left; | |
2024 | ||
2025 | tmp = *arg; | |
2026 | *arg = *right; | |
2027 | *right = tmp; | |
2028 | ||
2029 | arg->op.left = right; | |
2030 | } else { | |
2031 | arg->op.right = right; | |
2032 | } | |
f7d82350 SR |
2033 | |
2034 | } else if (strcmp(token, "[") == 0) { | |
2035 | ||
2036 | left = alloc_arg(); | |
b1ac754b NK |
2037 | if (!left) |
2038 | goto out_warn_free; | |
2039 | ||
f7d82350 SR |
2040 | *left = *arg; |
2041 | ||
2042 | arg->type = PRINT_OP; | |
2043 | arg->op.op = token; | |
2044 | arg->op.left = left; | |
2045 | ||
2046 | arg->op.prio = 0; | |
2047 | ||
41e51a28 | 2048 | /* it will set arg->op.right */ |
f7d82350 SR |
2049 | type = process_array(event, arg, tok); |
2050 | ||
2051 | } else { | |
3388cc3e | 2052 | do_warning_event(event, "unknown op '%s'", token); |
f7d82350 SR |
2053 | event->flags |= EVENT_FL_FAILED; |
2054 | /* the arg is now the left side */ | |
2055 | goto out_free; | |
2056 | } | |
2057 | ||
2058 | if (type == EVENT_OP && strcmp(*tok, ":") != 0) { | |
2059 | int prio; | |
2060 | ||
2061 | /* higher prios need to be closer to the root */ | |
2062 | prio = get_op_prio(*tok); | |
2063 | ||
2064 | if (prio > arg->op.prio) | |
2065 | return process_op(event, arg, tok); | |
2066 | ||
2067 | return process_op(event, right, tok); | |
2068 | } | |
2069 | ||
2070 | return type; | |
2071 | ||
b1ac754b | 2072 | out_warn_free: |
3388cc3e | 2073 | do_warning_event(event, "%s: not enough memory!", __func__); |
b1ac754b | 2074 | out_free: |
f7d82350 SR |
2075 | free_token(token); |
2076 | *tok = NULL; | |
2077 | return EVENT_ERROR; | |
2078 | } | |
2079 | ||
2080 | static enum event_type | |
1d037ca1 | 2081 | process_entry(struct event_format *event __maybe_unused, struct print_arg *arg, |
f7d82350 SR |
2082 | char **tok) |
2083 | { | |
2084 | enum event_type type; | |
2085 | char *field; | |
2086 | char *token; | |
2087 | ||
2088 | if (read_expected(EVENT_OP, "->") < 0) | |
2089 | goto out_err; | |
2090 | ||
2091 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
2092 | goto out_free; | |
2093 | field = token; | |
2094 | ||
2095 | arg->type = PRINT_FIELD; | |
2096 | arg->field.name = field; | |
2097 | ||
5205aec9 TZ |
2098 | if (is_flag_field) { |
2099 | arg->field.field = pevent_find_any_field(event, arg->field.name); | |
2100 | arg->field.field->flags |= FIELD_IS_FLAG; | |
2101 | is_flag_field = 0; | |
2102 | } else if (is_symbolic_field) { | |
2103 | arg->field.field = pevent_find_any_field(event, arg->field.name); | |
2104 | arg->field.field->flags |= FIELD_IS_SYMBOLIC; | |
2105 | is_symbolic_field = 0; | |
2106 | } | |
2107 | ||
f7d82350 SR |
2108 | type = read_token(&token); |
2109 | *tok = token; | |
2110 | ||
2111 | return type; | |
2112 | ||
2113 | out_free: | |
2114 | free_token(token); | |
2115 | out_err: | |
2116 | *tok = NULL; | |
2117 | return EVENT_ERROR; | |
2118 | } | |
2119 | ||
929a6bb7 JM |
2120 | static int alloc_and_process_delim(struct event_format *event, char *next_token, |
2121 | struct print_arg **print_arg) | |
2122 | { | |
2123 | struct print_arg *field; | |
2124 | enum event_type type; | |
2125 | char *token; | |
2126 | int ret = 0; | |
2127 | ||
2128 | field = alloc_arg(); | |
2129 | if (!field) { | |
2130 | do_warning_event(event, "%s: not enough memory!", __func__); | |
2131 | errno = ENOMEM; | |
2132 | return -1; | |
2133 | } | |
2134 | ||
2135 | type = process_arg(event, field, &token); | |
2136 | ||
2137 | if (test_type_token(type, token, EVENT_DELIM, next_token)) { | |
2138 | errno = EINVAL; | |
2139 | ret = -1; | |
2140 | free_arg(field); | |
2141 | goto out_free_token; | |
2142 | } | |
2143 | ||
2144 | *print_arg = field; | |
2145 | ||
2146 | out_free_token: | |
2147 | free_token(token); | |
2148 | ||
2149 | return ret; | |
2150 | } | |
2151 | ||
f7d82350 SR |
2152 | static char *arg_eval (struct print_arg *arg); |
2153 | ||
2154 | static unsigned long long | |
2155 | eval_type_str(unsigned long long val, const char *type, int pointer) | |
2156 | { | |
2157 | int sign = 0; | |
2158 | char *ref; | |
2159 | int len; | |
2160 | ||
2161 | len = strlen(type); | |
2162 | ||
2163 | if (pointer) { | |
2164 | ||
2165 | if (type[len-1] != '*') { | |
2166 | do_warning("pointer expected with non pointer type"); | |
2167 | return val; | |
2168 | } | |
2169 | ||
a6d2a61a ACM |
2170 | ref = malloc(len); |
2171 | if (!ref) { | |
2172 | do_warning("%s: not enough memory!", __func__); | |
2173 | return val; | |
2174 | } | |
f7d82350 SR |
2175 | memcpy(ref, type, len); |
2176 | ||
2177 | /* chop off the " *" */ | |
2178 | ref[len - 2] = 0; | |
2179 | ||
2180 | val = eval_type_str(val, ref, 0); | |
2181 | free(ref); | |
2182 | return val; | |
2183 | } | |
2184 | ||
2185 | /* check if this is a pointer */ | |
2186 | if (type[len - 1] == '*') | |
2187 | return val; | |
2188 | ||
2189 | /* Try to figure out the arg size*/ | |
2190 | if (strncmp(type, "struct", 6) == 0) | |
2191 | /* all bets off */ | |
2192 | return val; | |
2193 | ||
2194 | if (strcmp(type, "u8") == 0) | |
2195 | return val & 0xff; | |
2196 | ||
2197 | if (strcmp(type, "u16") == 0) | |
2198 | return val & 0xffff; | |
2199 | ||
2200 | if (strcmp(type, "u32") == 0) | |
2201 | return val & 0xffffffff; | |
2202 | ||
2203 | if (strcmp(type, "u64") == 0 || | |
2204 | strcmp(type, "s64")) | |
2205 | return val; | |
2206 | ||
2207 | if (strcmp(type, "s8") == 0) | |
2208 | return (unsigned long long)(char)val & 0xff; | |
2209 | ||
2210 | if (strcmp(type, "s16") == 0) | |
2211 | return (unsigned long long)(short)val & 0xffff; | |
2212 | ||
2213 | if (strcmp(type, "s32") == 0) | |
2214 | return (unsigned long long)(int)val & 0xffffffff; | |
2215 | ||
2216 | if (strncmp(type, "unsigned ", 9) == 0) { | |
2217 | sign = 0; | |
2218 | type += 9; | |
2219 | } | |
2220 | ||
2221 | if (strcmp(type, "char") == 0) { | |
2222 | if (sign) | |
2223 | return (unsigned long long)(char)val & 0xff; | |
2224 | else | |
2225 | return val & 0xff; | |
2226 | } | |
2227 | ||
2228 | if (strcmp(type, "short") == 0) { | |
2229 | if (sign) | |
2230 | return (unsigned long long)(short)val & 0xffff; | |
2231 | else | |
2232 | return val & 0xffff; | |
2233 | } | |
2234 | ||
2235 | if (strcmp(type, "int") == 0) { | |
2236 | if (sign) | |
2237 | return (unsigned long long)(int)val & 0xffffffff; | |
2238 | else | |
2239 | return val & 0xffffffff; | |
2240 | } | |
2241 | ||
2242 | return val; | |
2243 | } | |
2244 | ||
2245 | /* | |
2246 | * Try to figure out the type. | |
2247 | */ | |
2248 | static unsigned long long | |
2249 | eval_type(unsigned long long val, struct print_arg *arg, int pointer) | |
2250 | { | |
a6d2a61a ACM |
2251 | if (arg->type != PRINT_TYPE) { |
2252 | do_warning("expected type argument"); | |
2253 | return 0; | |
2254 | } | |
f7d82350 SR |
2255 | |
2256 | return eval_type_str(val, arg->typecast.type, pointer); | |
2257 | } | |
2258 | ||
d69afed5 | 2259 | static int arg_num_eval(struct print_arg *arg, long long *val) |
f7d82350 SR |
2260 | { |
2261 | long long left, right; | |
d69afed5 | 2262 | int ret = 1; |
f7d82350 SR |
2263 | |
2264 | switch (arg->type) { | |
2265 | case PRINT_ATOM: | |
d69afed5 | 2266 | *val = strtoll(arg->atom.atom, NULL, 0); |
f7d82350 SR |
2267 | break; |
2268 | case PRINT_TYPE: | |
d69afed5 VN |
2269 | ret = arg_num_eval(arg->typecast.item, val); |
2270 | if (!ret) | |
2271 | break; | |
2272 | *val = eval_type(*val, arg, 0); | |
f7d82350 SR |
2273 | break; |
2274 | case PRINT_OP: | |
2275 | switch (arg->op.op[0]) { | |
2276 | case '|': | |
d69afed5 VN |
2277 | ret = arg_num_eval(arg->op.left, &left); |
2278 | if (!ret) | |
2279 | break; | |
2280 | ret = arg_num_eval(arg->op.right, &right); | |
2281 | if (!ret) | |
2282 | break; | |
f7d82350 | 2283 | if (arg->op.op[1]) |
d69afed5 | 2284 | *val = left || right; |
f7d82350 | 2285 | else |
d69afed5 | 2286 | *val = left | right; |
f7d82350 SR |
2287 | break; |
2288 | case '&': | |
d69afed5 VN |
2289 | ret = arg_num_eval(arg->op.left, &left); |
2290 | if (!ret) | |
2291 | break; | |
2292 | ret = arg_num_eval(arg->op.right, &right); | |
2293 | if (!ret) | |
2294 | break; | |
f7d82350 | 2295 | if (arg->op.op[1]) |
d69afed5 | 2296 | *val = left && right; |
f7d82350 | 2297 | else |
d69afed5 | 2298 | *val = left & right; |
f7d82350 SR |
2299 | break; |
2300 | case '<': | |
d69afed5 VN |
2301 | ret = arg_num_eval(arg->op.left, &left); |
2302 | if (!ret) | |
2303 | break; | |
2304 | ret = arg_num_eval(arg->op.right, &right); | |
2305 | if (!ret) | |
2306 | break; | |
f7d82350 SR |
2307 | switch (arg->op.op[1]) { |
2308 | case 0: | |
d69afed5 | 2309 | *val = left < right; |
f7d82350 SR |
2310 | break; |
2311 | case '<': | |
d69afed5 | 2312 | *val = left << right; |
f7d82350 SR |
2313 | break; |
2314 | case '=': | |
d69afed5 | 2315 | *val = left <= right; |
f7d82350 SR |
2316 | break; |
2317 | default: | |
d69afed5 VN |
2318 | do_warning("unknown op '%s'", arg->op.op); |
2319 | ret = 0; | |
f7d82350 SR |
2320 | } |
2321 | break; | |
2322 | case '>': | |
d69afed5 VN |
2323 | ret = arg_num_eval(arg->op.left, &left); |
2324 | if (!ret) | |
2325 | break; | |
2326 | ret = arg_num_eval(arg->op.right, &right); | |
2327 | if (!ret) | |
2328 | break; | |
f7d82350 SR |
2329 | switch (arg->op.op[1]) { |
2330 | case 0: | |
d69afed5 | 2331 | *val = left > right; |
f7d82350 SR |
2332 | break; |
2333 | case '>': | |
d69afed5 | 2334 | *val = left >> right; |
f7d82350 SR |
2335 | break; |
2336 | case '=': | |
d69afed5 | 2337 | *val = left >= right; |
f7d82350 SR |
2338 | break; |
2339 | default: | |
d69afed5 VN |
2340 | do_warning("unknown op '%s'", arg->op.op); |
2341 | ret = 0; | |
f7d82350 SR |
2342 | } |
2343 | break; | |
2344 | case '=': | |
d69afed5 VN |
2345 | ret = arg_num_eval(arg->op.left, &left); |
2346 | if (!ret) | |
2347 | break; | |
2348 | ret = arg_num_eval(arg->op.right, &right); | |
2349 | if (!ret) | |
2350 | break; | |
f7d82350 | 2351 | |
d69afed5 VN |
2352 | if (arg->op.op[1] != '=') { |
2353 | do_warning("unknown op '%s'", arg->op.op); | |
2354 | ret = 0; | |
2355 | } else | |
2356 | *val = left == right; | |
f7d82350 SR |
2357 | break; |
2358 | case '!': | |
d69afed5 VN |
2359 | ret = arg_num_eval(arg->op.left, &left); |
2360 | if (!ret) | |
2361 | break; | |
2362 | ret = arg_num_eval(arg->op.right, &right); | |
2363 | if (!ret) | |
2364 | break; | |
f7d82350 SR |
2365 | |
2366 | switch (arg->op.op[1]) { | |
2367 | case '=': | |
d69afed5 | 2368 | *val = left != right; |
f7d82350 SR |
2369 | break; |
2370 | default: | |
d69afed5 VN |
2371 | do_warning("unknown op '%s'", arg->op.op); |
2372 | ret = 0; | |
f7d82350 SR |
2373 | } |
2374 | break; | |
2375 | case '-': | |
2376 | /* check for negative */ | |
2377 | if (arg->op.left->type == PRINT_NULL) | |
2378 | left = 0; | |
2379 | else | |
d69afed5 VN |
2380 | ret = arg_num_eval(arg->op.left, &left); |
2381 | if (!ret) | |
2382 | break; | |
2383 | ret = arg_num_eval(arg->op.right, &right); | |
2384 | if (!ret) | |
2385 | break; | |
2386 | *val = left - right; | |
f7d82350 | 2387 | break; |
b4828598 VN |
2388 | case '+': |
2389 | if (arg->op.left->type == PRINT_NULL) | |
2390 | left = 0; | |
2391 | else | |
2392 | ret = arg_num_eval(arg->op.left, &left); | |
2393 | if (!ret) | |
2394 | break; | |
2395 | ret = arg_num_eval(arg->op.right, &right); | |
2396 | if (!ret) | |
2397 | break; | |
2398 | *val = left + right; | |
2399 | break; | |
f7d82350 | 2400 | default: |
d69afed5 VN |
2401 | do_warning("unknown op '%s'", arg->op.op); |
2402 | ret = 0; | |
f7d82350 SR |
2403 | } |
2404 | break; | |
2405 | ||
2406 | case PRINT_NULL: | |
2407 | case PRINT_FIELD ... PRINT_SYMBOL: | |
2408 | case PRINT_STRING: | |
2409 | case PRINT_BSTRING: | |
473a778a | 2410 | case PRINT_BITMASK: |
f7d82350 | 2411 | default: |
d69afed5 VN |
2412 | do_warning("invalid eval type %d", arg->type); |
2413 | ret = 0; | |
f7d82350 SR |
2414 | |
2415 | } | |
d69afed5 | 2416 | return ret; |
f7d82350 SR |
2417 | } |
2418 | ||
2419 | static char *arg_eval (struct print_arg *arg) | |
2420 | { | |
2421 | long long val; | |
2422 | static char buf[20]; | |
2423 | ||
2424 | switch (arg->type) { | |
2425 | case PRINT_ATOM: | |
2426 | return arg->atom.atom; | |
2427 | case PRINT_TYPE: | |
2428 | return arg_eval(arg->typecast.item); | |
2429 | case PRINT_OP: | |
d69afed5 VN |
2430 | if (!arg_num_eval(arg, &val)) |
2431 | break; | |
f7d82350 SR |
2432 | sprintf(buf, "%lld", val); |
2433 | return buf; | |
2434 | ||
2435 | case PRINT_NULL: | |
2436 | case PRINT_FIELD ... PRINT_SYMBOL: | |
2437 | case PRINT_STRING: | |
2438 | case PRINT_BSTRING: | |
473a778a | 2439 | case PRINT_BITMASK: |
f7d82350 | 2440 | default: |
a6d2a61a | 2441 | do_warning("invalid eval type %d", arg->type); |
f7d82350 SR |
2442 | break; |
2443 | } | |
2444 | ||
2445 | return NULL; | |
2446 | } | |
2447 | ||
2448 | static enum event_type | |
2449 | process_fields(struct event_format *event, struct print_flag_sym **list, char **tok) | |
2450 | { | |
2451 | enum event_type type; | |
2452 | struct print_arg *arg = NULL; | |
2453 | struct print_flag_sym *field; | |
2454 | char *token = *tok; | |
2455 | char *value; | |
2456 | ||
2457 | do { | |
2458 | free_token(token); | |
2459 | type = read_token_item(&token); | |
2460 | if (test_type_token(type, token, EVENT_OP, "{")) | |
2461 | break; | |
2462 | ||
2463 | arg = alloc_arg(); | |
b1ac754b NK |
2464 | if (!arg) |
2465 | goto out_free; | |
f7d82350 SR |
2466 | |
2467 | free_token(token); | |
2468 | type = process_arg(event, arg, &token); | |
00b9da72 SH |
2469 | |
2470 | if (type == EVENT_OP) | |
2471 | type = process_op(event, arg, &token); | |
2472 | ||
2473 | if (type == EVENT_ERROR) | |
2474 | goto out_free; | |
2475 | ||
f7d82350 SR |
2476 | if (test_type_token(type, token, EVENT_DELIM, ",")) |
2477 | goto out_free; | |
2478 | ||
87162d81 ACM |
2479 | field = calloc(1, sizeof(*field)); |
2480 | if (!field) | |
2481 | goto out_free; | |
f7d82350 SR |
2482 | |
2483 | value = arg_eval(arg); | |
d69afed5 | 2484 | if (value == NULL) |
f8c49d26 | 2485 | goto out_free_field; |
f7d82350 | 2486 | field->value = strdup(value); |
ca63858e | 2487 | if (field->value == NULL) |
f8c49d26 | 2488 | goto out_free_field; |
f7d82350 SR |
2489 | |
2490 | free_arg(arg); | |
2491 | arg = alloc_arg(); | |
b1ac754b NK |
2492 | if (!arg) |
2493 | goto out_free; | |
f7d82350 SR |
2494 | |
2495 | free_token(token); | |
2496 | type = process_arg(event, arg, &token); | |
2497 | if (test_type_token(type, token, EVENT_OP, "}")) | |
f8c49d26 | 2498 | goto out_free_field; |
f7d82350 SR |
2499 | |
2500 | value = arg_eval(arg); | |
d69afed5 | 2501 | if (value == NULL) |
f8c49d26 | 2502 | goto out_free_field; |
f7d82350 | 2503 | field->str = strdup(value); |
ca63858e | 2504 | if (field->str == NULL) |
f8c49d26 | 2505 | goto out_free_field; |
f7d82350 SR |
2506 | free_arg(arg); |
2507 | arg = NULL; | |
2508 | ||
2509 | *list = field; | |
2510 | list = &field->next; | |
2511 | ||
2512 | free_token(token); | |
2513 | type = read_token_item(&token); | |
2514 | } while (type == EVENT_DELIM && strcmp(token, ",") == 0); | |
2515 | ||
2516 | *tok = token; | |
2517 | return type; | |
2518 | ||
f8c49d26 NK |
2519 | out_free_field: |
2520 | free_flag_sym(field); | |
f7d82350 SR |
2521 | out_free: |
2522 | free_arg(arg); | |
2523 | free_token(token); | |
2524 | *tok = NULL; | |
2525 | ||
2526 | return EVENT_ERROR; | |
2527 | } | |
2528 | ||
2529 | static enum event_type | |
2530 | process_flags(struct event_format *event, struct print_arg *arg, char **tok) | |
2531 | { | |
2532 | struct print_arg *field; | |
2533 | enum event_type type; | |
21da83fb | 2534 | char *token = NULL; |
f7d82350 SR |
2535 | |
2536 | memset(arg, 0, sizeof(*arg)); | |
2537 | arg->type = PRINT_FLAGS; | |
2538 | ||
2539 | field = alloc_arg(); | |
b1ac754b | 2540 | if (!field) { |
3388cc3e | 2541 | do_warning_event(event, "%s: not enough memory!", __func__); |
b1ac754b NK |
2542 | goto out_free; |
2543 | } | |
f7d82350 | 2544 | |
eff2c92f | 2545 | type = process_field_arg(event, field, &token); |
f7d82350 SR |
2546 | |
2547 | /* Handle operations in the first argument */ | |
2548 | while (type == EVENT_OP) | |
2549 | type = process_op(event, field, &token); | |
2550 | ||
2551 | if (test_type_token(type, token, EVENT_DELIM, ",")) | |
70d93044 | 2552 | goto out_free_field; |
f7d82350 SR |
2553 | free_token(token); |
2554 | ||
2555 | arg->flags.field = field; | |
2556 | ||
2557 | type = read_token_item(&token); | |
2558 | if (event_item_type(type)) { | |
2559 | arg->flags.delim = token; | |
2560 | type = read_token_item(&token); | |
2561 | } | |
2562 | ||
2563 | if (test_type_token(type, token, EVENT_DELIM, ",")) | |
2564 | goto out_free; | |
2565 | ||
2566 | type = process_fields(event, &arg->flags.flags, &token); | |
2567 | if (test_type_token(type, token, EVENT_DELIM, ")")) | |
2568 | goto out_free; | |
2569 | ||
2570 | free_token(token); | |
2571 | type = read_token_item(tok); | |
2572 | return type; | |
2573 | ||
70d93044 NK |
2574 | out_free_field: |
2575 | free_arg(field); | |
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_symbols(struct event_format *event, struct print_arg *arg, char **tok) | |
2584 | { | |
2585 | struct print_arg *field; | |
2586 | enum event_type type; | |
21da83fb | 2587 | char *token = NULL; |
f7d82350 SR |
2588 | |
2589 | memset(arg, 0, sizeof(*arg)); | |
2590 | arg->type = PRINT_SYMBOL; | |
2591 | ||
2592 | field = alloc_arg(); | |
b1ac754b | 2593 | if (!field) { |
3388cc3e | 2594 | do_warning_event(event, "%s: not enough memory!", __func__); |
b1ac754b NK |
2595 | goto out_free; |
2596 | } | |
f7d82350 | 2597 | |
eff2c92f SR |
2598 | type = process_field_arg(event, field, &token); |
2599 | ||
f7d82350 | 2600 | if (test_type_token(type, token, EVENT_DELIM, ",")) |
70d93044 | 2601 | goto out_free_field; |
f7d82350 SR |
2602 | |
2603 | arg->symbol.field = field; | |
2604 | ||
2605 | type = process_fields(event, &arg->symbol.symbols, &token); | |
2606 | if (test_type_token(type, token, EVENT_DELIM, ")")) | |
2607 | goto out_free; | |
2608 | ||
2609 | free_token(token); | |
2610 | type = read_token_item(tok); | |
2611 | return type; | |
2612 | ||
70d93044 NK |
2613 | out_free_field: |
2614 | free_arg(field); | |
2615 | out_free: | |
f7d82350 SR |
2616 | free_token(token); |
2617 | *tok = NULL; | |
2618 | return EVENT_ERROR; | |
2619 | } | |
2620 | ||
e080e6f1 NK |
2621 | static enum event_type |
2622 | process_hex(struct event_format *event, struct print_arg *arg, char **tok) | |
2623 | { | |
e080e6f1 NK |
2624 | memset(arg, 0, sizeof(*arg)); |
2625 | arg->type = PRINT_HEX; | |
2626 | ||
929a6bb7 JM |
2627 | if (alloc_and_process_delim(event, ",", &arg->hex.field)) |
2628 | goto out; | |
b1ac754b | 2629 | |
929a6bb7 JM |
2630 | if (alloc_and_process_delim(event, ")", &arg->hex.size)) |
2631 | goto free_field; | |
e080e6f1 | 2632 | |
929a6bb7 | 2633 | return read_token_item(tok); |
e080e6f1 | 2634 | |
929a6bb7 JM |
2635 | free_field: |
2636 | free_arg(arg->hex.field); | |
2637 | out: | |
e080e6f1 NK |
2638 | *tok = NULL; |
2639 | return EVENT_ERROR; | |
2640 | } | |
e080e6f1 | 2641 | |
b839e1e8 JM |
2642 | static enum event_type |
2643 | process_int_array(struct event_format *event, struct print_arg *arg, char **tok) | |
2644 | { | |
2645 | memset(arg, 0, sizeof(*arg)); | |
2646 | arg->type = PRINT_INT_ARRAY; | |
b1ac754b | 2647 | |
b839e1e8 JM |
2648 | if (alloc_and_process_delim(event, ",", &arg->int_array.field)) |
2649 | goto out; | |
e080e6f1 | 2650 | |
b839e1e8 JM |
2651 | if (alloc_and_process_delim(event, ",", &arg->int_array.count)) |
2652 | goto free_field; | |
e080e6f1 | 2653 | |
b839e1e8 JM |
2654 | if (alloc_and_process_delim(event, ")", &arg->int_array.el_size)) |
2655 | goto free_size; | |
e080e6f1 | 2656 | |
b839e1e8 | 2657 | return read_token_item(tok); |
e080e6f1 | 2658 | |
b839e1e8 JM |
2659 | free_size: |
2660 | free_arg(arg->int_array.count); | |
2661 | free_field: | |
2662 | free_arg(arg->int_array.field); | |
2663 | out: | |
e080e6f1 NK |
2664 | *tok = NULL; |
2665 | return EVENT_ERROR; | |
2666 | } | |
2667 | ||
f7d82350 SR |
2668 | static enum event_type |
2669 | process_dynamic_array(struct event_format *event, struct print_arg *arg, char **tok) | |
2670 | { | |
2671 | struct format_field *field; | |
2672 | enum event_type type; | |
2673 | char *token; | |
2674 | ||
2675 | memset(arg, 0, sizeof(*arg)); | |
2676 | arg->type = PRINT_DYNAMIC_ARRAY; | |
2677 | ||
2678 | /* | |
2679 | * The item within the parenthesis is another field that holds | |
2680 | * the index into where the array starts. | |
2681 | */ | |
2682 | type = read_token(&token); | |
2683 | *tok = token; | |
2684 | if (type != EVENT_ITEM) | |
2685 | goto out_free; | |
2686 | ||
2687 | /* Find the field */ | |
2688 | ||
2689 | field = pevent_find_field(event, token); | |
2690 | if (!field) | |
2691 | goto out_free; | |
2692 | ||
2693 | arg->dynarray.field = field; | |
2694 | arg->dynarray.index = 0; | |
2695 | ||
2696 | if (read_expected(EVENT_DELIM, ")") < 0) | |
2697 | goto out_free; | |
2698 | ||
2699 | free_token(token); | |
2700 | type = read_token_item(&token); | |
2701 | *tok = token; | |
2702 | if (type != EVENT_OP || strcmp(token, "[") != 0) | |
2703 | return type; | |
2704 | ||
2705 | free_token(token); | |
2706 | arg = alloc_arg(); | |
fba7a782 | 2707 | if (!arg) { |
3388cc3e | 2708 | do_warning_event(event, "%s: not enough memory!", __func__); |
b1ac754b NK |
2709 | *tok = NULL; |
2710 | return EVENT_ERROR; | |
2711 | } | |
2712 | ||
f7d82350 SR |
2713 | type = process_arg(event, arg, &token); |
2714 | if (type == EVENT_ERROR) | |
b3511d05 | 2715 | goto out_free_arg; |
f7d82350 SR |
2716 | |
2717 | if (!test_type_token(type, token, EVENT_OP, "]")) | |
b3511d05 | 2718 | goto out_free_arg; |
f7d82350 SR |
2719 | |
2720 | free_token(token); | |
2721 | type = read_token_item(tok); | |
2722 | return type; | |
2723 | ||
b3511d05 NK |
2724 | out_free_arg: |
2725 | free_arg(arg); | |
f7d82350 | 2726 | out_free: |
f7d82350 SR |
2727 | free_token(token); |
2728 | *tok = NULL; | |
2729 | return EVENT_ERROR; | |
2730 | } | |
2731 | ||
76055940 HK |
2732 | static enum event_type |
2733 | process_dynamic_array_len(struct event_format *event, struct print_arg *arg, | |
2734 | char **tok) | |
2735 | { | |
2736 | struct format_field *field; | |
2737 | enum event_type type; | |
2738 | char *token; | |
2739 | ||
2740 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
2741 | goto out_free; | |
2742 | ||
2743 | arg->type = PRINT_DYNAMIC_ARRAY_LEN; | |
2744 | ||
2745 | /* Find the field */ | |
2746 | field = pevent_find_field(event, token); | |
2747 | if (!field) | |
2748 | goto out_free; | |
2749 | ||
2750 | arg->dynarray.field = field; | |
2751 | arg->dynarray.index = 0; | |
2752 | ||
2753 | if (read_expected(EVENT_DELIM, ")") < 0) | |
2754 | goto out_err; | |
2755 | ||
2756 | type = read_token(&token); | |
2757 | *tok = token; | |
2758 | ||
2759 | return type; | |
2760 | ||
2761 | out_free: | |
2762 | free_token(token); | |
2763 | out_err: | |
2764 | *tok = NULL; | |
2765 | return EVENT_ERROR; | |
2766 | } | |
2767 | ||
f7d82350 SR |
2768 | static enum event_type |
2769 | process_paren(struct event_format *event, struct print_arg *arg, char **tok) | |
2770 | { | |
2771 | struct print_arg *item_arg; | |
2772 | enum event_type type; | |
2773 | char *token; | |
2774 | ||
2775 | type = process_arg(event, arg, &token); | |
2776 | ||
2777 | if (type == EVENT_ERROR) | |
2778 | goto out_free; | |
2779 | ||
2780 | if (type == EVENT_OP) | |
2781 | type = process_op(event, arg, &token); | |
2782 | ||
2783 | if (type == EVENT_ERROR) | |
2784 | goto out_free; | |
2785 | ||
2786 | if (test_type_token(type, token, EVENT_DELIM, ")")) | |
2787 | goto out_free; | |
2788 | ||
2789 | free_token(token); | |
2790 | type = read_token_item(&token); | |
2791 | ||
2792 | /* | |
2793 | * If the next token is an item or another open paren, then | |
2794 | * this was a typecast. | |
2795 | */ | |
2796 | if (event_item_type(type) || | |
2797 | (type == EVENT_DELIM && strcmp(token, "(") == 0)) { | |
2798 | ||
2799 | /* make this a typecast and contine */ | |
2800 | ||
2801 | /* prevous must be an atom */ | |
a6d2a61a | 2802 | if (arg->type != PRINT_ATOM) { |
3388cc3e | 2803 | do_warning_event(event, "previous needed to be PRINT_ATOM"); |
a6d2a61a ACM |
2804 | goto out_free; |
2805 | } | |
f7d82350 SR |
2806 | |
2807 | item_arg = alloc_arg(); | |
b1ac754b | 2808 | if (!item_arg) { |
3388cc3e NK |
2809 | do_warning_event(event, "%s: not enough memory!", |
2810 | __func__); | |
b1ac754b NK |
2811 | goto out_free; |
2812 | } | |
f7d82350 SR |
2813 | |
2814 | arg->type = PRINT_TYPE; | |
2815 | arg->typecast.type = arg->atom.atom; | |
2816 | arg->typecast.item = item_arg; | |
2817 | type = process_arg_token(event, item_arg, &token, type); | |
2818 | ||
2819 | } | |
2820 | ||
2821 | *tok = token; | |
2822 | return type; | |
2823 | ||
2824 | out_free: | |
2825 | free_token(token); | |
2826 | *tok = NULL; | |
2827 | return EVENT_ERROR; | |
2828 | } | |
2829 | ||
2830 | ||
2831 | static enum event_type | |
1d037ca1 IT |
2832 | process_str(struct event_format *event __maybe_unused, struct print_arg *arg, |
2833 | char **tok) | |
f7d82350 SR |
2834 | { |
2835 | enum event_type type; | |
2836 | char *token; | |
2837 | ||
2838 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
2839 | goto out_free; | |
2840 | ||
2841 | arg->type = PRINT_STRING; | |
2842 | arg->string.string = token; | |
2843 | arg->string.offset = -1; | |
2844 | ||
2845 | if (read_expected(EVENT_DELIM, ")") < 0) | |
2846 | goto out_err; | |
2847 | ||
2848 | type = read_token(&token); | |
2849 | *tok = token; | |
2850 | ||
2851 | return type; | |
2852 | ||
2853 | out_free: | |
2854 | free_token(token); | |
2855 | out_err: | |
2856 | *tok = NULL; | |
2857 | return EVENT_ERROR; | |
2858 | } | |
2859 | ||
473a778a SRRH |
2860 | static enum event_type |
2861 | process_bitmask(struct event_format *event __maybe_unused, struct print_arg *arg, | |
2862 | char **tok) | |
2863 | { | |
2864 | enum event_type type; | |
2865 | char *token; | |
2866 | ||
2867 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
2868 | goto out_free; | |
2869 | ||
2870 | arg->type = PRINT_BITMASK; | |
2871 | arg->bitmask.bitmask = token; | |
2872 | arg->bitmask.offset = -1; | |
2873 | ||
2874 | if (read_expected(EVENT_DELIM, ")") < 0) | |
2875 | goto out_err; | |
2876 | ||
2877 | type = read_token(&token); | |
2878 | *tok = token; | |
2879 | ||
2880 | return type; | |
2881 | ||
2882 | out_free: | |
2883 | free_token(token); | |
2884 | out_err: | |
2885 | *tok = NULL; | |
2886 | return EVENT_ERROR; | |
2887 | } | |
2888 | ||
f7d82350 SR |
2889 | static struct pevent_function_handler * |
2890 | find_func_handler(struct pevent *pevent, char *func_name) | |
2891 | { | |
2892 | struct pevent_function_handler *func; | |
2893 | ||
101782ea SR |
2894 | if (!pevent) |
2895 | return NULL; | |
2896 | ||
f7d82350 SR |
2897 | for (func = pevent->func_handlers; func; func = func->next) { |
2898 | if (strcmp(func->name, func_name) == 0) | |
2899 | break; | |
2900 | } | |
2901 | ||
2902 | return func; | |
2903 | } | |
2904 | ||
2905 | static void remove_func_handler(struct pevent *pevent, char *func_name) | |
2906 | { | |
2907 | struct pevent_function_handler *func; | |
2908 | struct pevent_function_handler **next; | |
2909 | ||
2910 | next = &pevent->func_handlers; | |
2911 | while ((func = *next)) { | |
2912 | if (strcmp(func->name, func_name) == 0) { | |
2913 | *next = func->next; | |
2914 | free_func_handle(func); | |
2915 | break; | |
2916 | } | |
2917 | next = &func->next; | |
2918 | } | |
2919 | } | |
2920 | ||
2921 | static enum event_type | |
2922 | process_func_handler(struct event_format *event, struct pevent_function_handler *func, | |
2923 | struct print_arg *arg, char **tok) | |
2924 | { | |
2925 | struct print_arg **next_arg; | |
2926 | struct print_arg *farg; | |
2927 | enum event_type type; | |
2928 | char *token; | |
f7d82350 SR |
2929 | int i; |
2930 | ||
2931 | arg->type = PRINT_FUNC; | |
2932 | arg->func.func = func; | |
2933 | ||
2934 | *tok = NULL; | |
2935 | ||
2936 | next_arg = &(arg->func.args); | |
2937 | for (i = 0; i < func->nr_args; i++) { | |
2938 | farg = alloc_arg(); | |
b1ac754b | 2939 | if (!farg) { |
3388cc3e NK |
2940 | do_warning_event(event, "%s: not enough memory!", |
2941 | __func__); | |
b1ac754b NK |
2942 | return EVENT_ERROR; |
2943 | } | |
2944 | ||
f7d82350 | 2945 | type = process_arg(event, farg, &token); |
3a3ffa2e SR |
2946 | if (i < (func->nr_args - 1)) { |
2947 | if (type != EVENT_DELIM || strcmp(token, ",") != 0) { | |
9e9e5dfd NK |
2948 | do_warning_event(event, |
2949 | "Error: function '%s()' expects %d arguments but event %s only uses %d", | |
3a3ffa2e SR |
2950 | func->name, func->nr_args, |
2951 | event->name, i + 1); | |
2952 | goto err; | |
2953 | } | |
2954 | } else { | |
2955 | if (type != EVENT_DELIM || strcmp(token, ")") != 0) { | |
9e9e5dfd NK |
2956 | do_warning_event(event, |
2957 | "Error: function '%s()' only expects %d arguments but event %s has more", | |
3a3ffa2e SR |
2958 | func->name, func->nr_args, event->name); |
2959 | goto err; | |
2960 | } | |
f7d82350 SR |
2961 | } |
2962 | ||
2963 | *next_arg = farg; | |
2964 | next_arg = &(farg->next); | |
2965 | free_token(token); | |
2966 | } | |
2967 | ||
2968 | type = read_token(&token); | |
2969 | *tok = token; | |
2970 | ||
2971 | return type; | |
3a3ffa2e SR |
2972 | |
2973 | err: | |
2974 | free_arg(farg); | |
2975 | free_token(token); | |
2976 | return EVENT_ERROR; | |
f7d82350 SR |
2977 | } |
2978 | ||
2979 | static enum event_type | |
2980 | process_function(struct event_format *event, struct print_arg *arg, | |
2981 | char *token, char **tok) | |
2982 | { | |
2983 | struct pevent_function_handler *func; | |
2984 | ||
2985 | if (strcmp(token, "__print_flags") == 0) { | |
2986 | free_token(token); | |
5205aec9 | 2987 | is_flag_field = 1; |
f7d82350 SR |
2988 | return process_flags(event, arg, tok); |
2989 | } | |
2990 | if (strcmp(token, "__print_symbolic") == 0) { | |
2991 | free_token(token); | |
5205aec9 | 2992 | is_symbolic_field = 1; |
f7d82350 SR |
2993 | return process_symbols(event, arg, tok); |
2994 | } | |
e080e6f1 NK |
2995 | if (strcmp(token, "__print_hex") == 0) { |
2996 | free_token(token); | |
2997 | return process_hex(event, arg, tok); | |
2998 | } | |
b839e1e8 JM |
2999 | if (strcmp(token, "__print_array") == 0) { |
3000 | free_token(token); | |
3001 | return process_int_array(event, arg, tok); | |
3002 | } | |
f7d82350 SR |
3003 | if (strcmp(token, "__get_str") == 0) { |
3004 | free_token(token); | |
3005 | return process_str(event, arg, tok); | |
3006 | } | |
473a778a SRRH |
3007 | if (strcmp(token, "__get_bitmask") == 0) { |
3008 | free_token(token); | |
3009 | return process_bitmask(event, arg, tok); | |
3010 | } | |
f7d82350 SR |
3011 | if (strcmp(token, "__get_dynamic_array") == 0) { |
3012 | free_token(token); | |
3013 | return process_dynamic_array(event, arg, tok); | |
3014 | } | |
76055940 HK |
3015 | if (strcmp(token, "__get_dynamic_array_len") == 0) { |
3016 | free_token(token); | |
3017 | return process_dynamic_array_len(event, arg, tok); | |
3018 | } | |
f7d82350 SR |
3019 | |
3020 | func = find_func_handler(event->pevent, token); | |
3021 | if (func) { | |
3022 | free_token(token); | |
3023 | return process_func_handler(event, func, arg, tok); | |
3024 | } | |
3025 | ||
3388cc3e | 3026 | do_warning_event(event, "function %s not defined", token); |
f7d82350 SR |
3027 | free_token(token); |
3028 | return EVENT_ERROR; | |
3029 | } | |
3030 | ||
3031 | static enum event_type | |
3032 | process_arg_token(struct event_format *event, struct print_arg *arg, | |
3033 | char **tok, enum event_type type) | |
3034 | { | |
3035 | char *token; | |
3036 | char *atom; | |
3037 | ||
3038 | token = *tok; | |
3039 | ||
3040 | switch (type) { | |
3041 | case EVENT_ITEM: | |
3042 | if (strcmp(token, "REC") == 0) { | |
3043 | free_token(token); | |
3044 | type = process_entry(event, arg, &token); | |
3045 | break; | |
3046 | } | |
3047 | atom = token; | |
3048 | /* test the next token */ | |
3049 | type = read_token_item(&token); | |
3050 | ||
3051 | /* | |
3052 | * If the next token is a parenthesis, then this | |
3053 | * is a function. | |
3054 | */ | |
3055 | if (type == EVENT_DELIM && strcmp(token, "(") == 0) { | |
3056 | free_token(token); | |
3057 | token = NULL; | |
3058 | /* this will free atom. */ | |
3059 | type = process_function(event, arg, atom, &token); | |
3060 | break; | |
3061 | } | |
3062 | /* atoms can be more than one token long */ | |
3063 | while (type == EVENT_ITEM) { | |
d286447f NK |
3064 | char *new_atom; |
3065 | new_atom = realloc(atom, | |
3066 | strlen(atom) + strlen(token) + 2); | |
3067 | if (!new_atom) { | |
3068 | free(atom); | |
3069 | *tok = NULL; | |
3070 | free_token(token); | |
3071 | return EVENT_ERROR; | |
3072 | } | |
3073 | atom = new_atom; | |
f7d82350 SR |
3074 | strcat(atom, " "); |
3075 | strcat(atom, token); | |
3076 | free_token(token); | |
3077 | type = read_token_item(&token); | |
3078 | } | |
3079 | ||
3080 | arg->type = PRINT_ATOM; | |
3081 | arg->atom.atom = atom; | |
3082 | break; | |
3083 | ||
3084 | case EVENT_DQUOTE: | |
3085 | case EVENT_SQUOTE: | |
3086 | arg->type = PRINT_ATOM; | |
3087 | arg->atom.atom = token; | |
3088 | type = read_token_item(&token); | |
3089 | break; | |
3090 | case EVENT_DELIM: | |
3091 | if (strcmp(token, "(") == 0) { | |
3092 | free_token(token); | |
3093 | type = process_paren(event, arg, &token); | |
3094 | break; | |
3095 | } | |
3096 | case EVENT_OP: | |
3097 | /* handle single ops */ | |
3098 | arg->type = PRINT_OP; | |
3099 | arg->op.op = token; | |
3100 | arg->op.left = NULL; | |
3101 | type = process_op(event, arg, &token); | |
3102 | ||
3103 | /* On error, the op is freed */ | |
3104 | if (type == EVENT_ERROR) | |
3105 | arg->op.op = NULL; | |
3106 | ||
3107 | /* return error type if errored */ | |
3108 | break; | |
3109 | ||
3110 | case EVENT_ERROR ... EVENT_NEWLINE: | |
3111 | default: | |
3388cc3e | 3112 | do_warning_event(event, "unexpected type %d", type); |
a6d2a61a | 3113 | return EVENT_ERROR; |
f7d82350 SR |
3114 | } |
3115 | *tok = token; | |
3116 | ||
3117 | return type; | |
3118 | } | |
3119 | ||
3120 | static int event_read_print_args(struct event_format *event, struct print_arg **list) | |
3121 | { | |
3122 | enum event_type type = EVENT_ERROR; | |
3123 | struct print_arg *arg; | |
3124 | char *token; | |
3125 | int args = 0; | |
3126 | ||
3127 | do { | |
3128 | if (type == EVENT_NEWLINE) { | |
3129 | type = read_token_item(&token); | |
3130 | continue; | |
3131 | } | |
3132 | ||
3133 | arg = alloc_arg(); | |
b1ac754b | 3134 | if (!arg) { |
3388cc3e NK |
3135 | do_warning_event(event, "%s: not enough memory!", |
3136 | __func__); | |
b1ac754b NK |
3137 | return -1; |
3138 | } | |
f7d82350 SR |
3139 | |
3140 | type = process_arg(event, arg, &token); | |
3141 | ||
3142 | if (type == EVENT_ERROR) { | |
3143 | free_token(token); | |
3144 | free_arg(arg); | |
3145 | return -1; | |
3146 | } | |
3147 | ||
3148 | *list = arg; | |
3149 | args++; | |
3150 | ||
3151 | if (type == EVENT_OP) { | |
3152 | type = process_op(event, arg, &token); | |
3153 | free_token(token); | |
3154 | if (type == EVENT_ERROR) { | |
3155 | *list = NULL; | |
3156 | free_arg(arg); | |
3157 | return -1; | |
3158 | } | |
3159 | list = &arg->next; | |
3160 | continue; | |
3161 | } | |
3162 | ||
3163 | if (type == EVENT_DELIM && strcmp(token, ",") == 0) { | |
3164 | free_token(token); | |
3165 | *list = arg; | |
3166 | list = &arg->next; | |
3167 | continue; | |
3168 | } | |
3169 | break; | |
3170 | } while (type != EVENT_NONE); | |
3171 | ||
3172 | if (type != EVENT_NONE && type != EVENT_ERROR) | |
3173 | free_token(token); | |
3174 | ||
3175 | return args; | |
3176 | } | |
3177 | ||
3178 | static int event_read_print(struct event_format *event) | |
3179 | { | |
3180 | enum event_type type; | |
3181 | char *token; | |
3182 | int ret; | |
3183 | ||
3184 | if (read_expected_item(EVENT_ITEM, "print") < 0) | |
3185 | return -1; | |
3186 | ||
3187 | if (read_expected(EVENT_ITEM, "fmt") < 0) | |
3188 | return -1; | |
3189 | ||
3190 | if (read_expected(EVENT_OP, ":") < 0) | |
3191 | return -1; | |
3192 | ||
3193 | if (read_expect_type(EVENT_DQUOTE, &token) < 0) | |
3194 | goto fail; | |
3195 | ||
3196 | concat: | |
3197 | event->print_fmt.format = token; | |
3198 | event->print_fmt.args = NULL; | |
3199 | ||
3200 | /* ok to have no arg */ | |
3201 | type = read_token_item(&token); | |
3202 | ||
3203 | if (type == EVENT_NONE) | |
3204 | return 0; | |
3205 | ||
3206 | /* Handle concatenation of print lines */ | |
3207 | if (type == EVENT_DQUOTE) { | |
3208 | char *cat; | |
3209 | ||
0dbca1e3 ACM |
3210 | if (asprintf(&cat, "%s%s", event->print_fmt.format, token) < 0) |
3211 | goto fail; | |
f7d82350 SR |
3212 | free_token(token); |
3213 | free_token(event->print_fmt.format); | |
3214 | event->print_fmt.format = NULL; | |
3215 | token = cat; | |
3216 | goto concat; | |
3217 | } | |
3218 | ||
3219 | if (test_type_token(type, token, EVENT_DELIM, ",")) | |
3220 | goto fail; | |
3221 | ||
3222 | free_token(token); | |
3223 | ||
3224 | ret = event_read_print_args(event, &event->print_fmt.args); | |
3225 | if (ret < 0) | |
3226 | return -1; | |
3227 | ||
3228 | return ret; | |
3229 | ||
3230 | fail: | |
3231 | free_token(token); | |
3232 | return -1; | |
3233 | } | |
3234 | ||
3235 | /** | |
3236 | * pevent_find_common_field - return a common field by event | |
3237 | * @event: handle for the event | |
3238 | * @name: the name of the common field to return | |
3239 | * | |
3240 | * Returns a common field from the event by the given @name. | |
3241 | * This only searchs the common fields and not all field. | |
3242 | */ | |
3243 | struct format_field * | |
3244 | pevent_find_common_field(struct event_format *event, const char *name) | |
3245 | { | |
3246 | struct format_field *format; | |
3247 | ||
3248 | for (format = event->format.common_fields; | |
3249 | format; format = format->next) { | |
3250 | if (strcmp(format->name, name) == 0) | |
3251 | break; | |
3252 | } | |
3253 | ||
3254 | return format; | |
3255 | } | |
3256 | ||
3257 | /** | |
3258 | * pevent_find_field - find a non-common field | |
3259 | * @event: handle for the event | |
3260 | * @name: the name of the non-common field | |
3261 | * | |
3262 | * Returns a non-common field by the given @name. | |
3263 | * This does not search common fields. | |
3264 | */ | |
3265 | struct format_field * | |
3266 | pevent_find_field(struct event_format *event, const char *name) | |
3267 | { | |
3268 | struct format_field *format; | |
3269 | ||
3270 | for (format = event->format.fields; | |
3271 | format; format = format->next) { | |
3272 | if (strcmp(format->name, name) == 0) | |
3273 | break; | |
3274 | } | |
3275 | ||
3276 | return format; | |
3277 | } | |
3278 | ||
3279 | /** | |
3280 | * pevent_find_any_field - find any field by name | |
3281 | * @event: handle for the event | |
3282 | * @name: the name of the field | |
3283 | * | |
3284 | * Returns a field by the given @name. | |
3285 | * This searchs the common field names first, then | |
3286 | * the non-common ones if a common one was not found. | |
3287 | */ | |
3288 | struct format_field * | |
3289 | pevent_find_any_field(struct event_format *event, const char *name) | |
3290 | { | |
3291 | struct format_field *format; | |
3292 | ||
3293 | format = pevent_find_common_field(event, name); | |
3294 | if (format) | |
3295 | return format; | |
3296 | return pevent_find_field(event, name); | |
3297 | } | |
3298 | ||
3299 | /** | |
3300 | * pevent_read_number - read a number from data | |
3301 | * @pevent: handle for the pevent | |
3302 | * @ptr: the raw data | |
3303 | * @size: the size of the data that holds the number | |
3304 | * | |
3305 | * Returns the number (converted to host) from the | |
3306 | * raw data. | |
3307 | */ | |
3308 | unsigned long long pevent_read_number(struct pevent *pevent, | |
3309 | const void *ptr, int size) | |
3310 | { | |
3311 | switch (size) { | |
3312 | case 1: | |
3313 | return *(unsigned char *)ptr; | |
3314 | case 2: | |
3315 | return data2host2(pevent, ptr); | |
3316 | case 4: | |
3317 | return data2host4(pevent, ptr); | |
3318 | case 8: | |
3319 | return data2host8(pevent, ptr); | |
3320 | default: | |
3321 | /* BUG! */ | |
3322 | return 0; | |
3323 | } | |
3324 | } | |
3325 | ||
3326 | /** | |
3327 | * pevent_read_number_field - read a number from data | |
3328 | * @field: a handle to the field | |
3329 | * @data: the raw data to read | |
3330 | * @value: the value to place the number in | |
3331 | * | |
3332 | * Reads raw data according to a field offset and size, | |
3333 | * and translates it into @value. | |
3334 | * | |
3335 | * Returns 0 on success, -1 otherwise. | |
3336 | */ | |
3337 | int pevent_read_number_field(struct format_field *field, const void *data, | |
3338 | unsigned long long *value) | |
3339 | { | |
3340 | if (!field) | |
3341 | return -1; | |
3342 | switch (field->size) { | |
3343 | case 1: | |
3344 | case 2: | |
3345 | case 4: | |
3346 | case 8: | |
3347 | *value = pevent_read_number(field->event->pevent, | |
3348 | data + field->offset, field->size); | |
3349 | return 0; | |
3350 | default: | |
3351 | return -1; | |
3352 | } | |
3353 | } | |
3354 | ||
3355 | static int get_common_info(struct pevent *pevent, | |
3356 | const char *type, int *offset, int *size) | |
3357 | { | |
3358 | struct event_format *event; | |
3359 | struct format_field *field; | |
3360 | ||
3361 | /* | |
3362 | * All events should have the same common elements. | |
3363 | * Pick any event to find where the type is; | |
3364 | */ | |
a6d2a61a ACM |
3365 | if (!pevent->events) { |
3366 | do_warning("no event_list!"); | |
3367 | return -1; | |
3368 | } | |
f7d82350 SR |
3369 | |
3370 | event = pevent->events[0]; | |
3371 | field = pevent_find_common_field(event, type); | |
3372 | if (!field) | |
0866a97e | 3373 | return -1; |
f7d82350 SR |
3374 | |
3375 | *offset = field->offset; | |
3376 | *size = field->size; | |
3377 | ||
3378 | return 0; | |
3379 | } | |
3380 | ||
3381 | static int __parse_common(struct pevent *pevent, void *data, | |
3382 | int *size, int *offset, const char *name) | |
3383 | { | |
3384 | int ret; | |
3385 | ||
3386 | if (!*size) { | |
3387 | ret = get_common_info(pevent, name, offset, size); | |
3388 | if (ret < 0) | |
3389 | return ret; | |
3390 | } | |
3391 | return pevent_read_number(pevent, data + *offset, *size); | |
3392 | } | |
3393 | ||
3394 | static int trace_parse_common_type(struct pevent *pevent, void *data) | |
3395 | { | |
3396 | return __parse_common(pevent, data, | |
3397 | &pevent->type_size, &pevent->type_offset, | |
3398 | "common_type"); | |
3399 | } | |
3400 | ||
3401 | static int parse_common_pid(struct pevent *pevent, void *data) | |
3402 | { | |
3403 | return __parse_common(pevent, data, | |
3404 | &pevent->pid_size, &pevent->pid_offset, | |
3405 | "common_pid"); | |
3406 | } | |
3407 | ||
3408 | static int parse_common_pc(struct pevent *pevent, void *data) | |
3409 | { | |
3410 | return __parse_common(pevent, data, | |
3411 | &pevent->pc_size, &pevent->pc_offset, | |
3412 | "common_preempt_count"); | |
3413 | } | |
3414 | ||
3415 | static int parse_common_flags(struct pevent *pevent, void *data) | |
3416 | { | |
3417 | return __parse_common(pevent, data, | |
3418 | &pevent->flags_size, &pevent->flags_offset, | |
3419 | "common_flags"); | |
3420 | } | |
3421 | ||
3422 | static int parse_common_lock_depth(struct pevent *pevent, void *data) | |
3423 | { | |
0866a97e SR |
3424 | return __parse_common(pevent, data, |
3425 | &pevent->ld_size, &pevent->ld_offset, | |
3426 | "common_lock_depth"); | |
3427 | } | |
f7d82350 | 3428 | |
0866a97e SR |
3429 | static int parse_common_migrate_disable(struct pevent *pevent, void *data) |
3430 | { | |
3431 | return __parse_common(pevent, data, | |
3432 | &pevent->ld_size, &pevent->ld_offset, | |
3433 | "common_migrate_disable"); | |
f7d82350 SR |
3434 | } |
3435 | ||
3436 | static int events_id_cmp(const void *a, const void *b); | |
3437 | ||
3438 | /** | |
3439 | * pevent_find_event - find an event by given id | |
3440 | * @pevent: a handle to the pevent | |
3441 | * @id: the id of the event | |
3442 | * | |
3443 | * Returns an event that has a given @id. | |
3444 | */ | |
3445 | struct event_format *pevent_find_event(struct pevent *pevent, int id) | |
3446 | { | |
3447 | struct event_format **eventptr; | |
3448 | struct event_format key; | |
3449 | struct event_format *pkey = &key; | |
3450 | ||
3451 | /* Check cache first */ | |
3452 | if (pevent->last_event && pevent->last_event->id == id) | |
3453 | return pevent->last_event; | |
3454 | ||
3455 | key.id = id; | |
3456 | ||
3457 | eventptr = bsearch(&pkey, pevent->events, pevent->nr_events, | |
3458 | sizeof(*pevent->events), events_id_cmp); | |
3459 | ||
3460 | if (eventptr) { | |
3461 | pevent->last_event = *eventptr; | |
3462 | return *eventptr; | |
3463 | } | |
3464 | ||
3465 | return NULL; | |
3466 | } | |
3467 | ||
3468 | /** | |
3469 | * pevent_find_event_by_name - find an event by given name | |
3470 | * @pevent: a handle to the pevent | |
3471 | * @sys: the system name to search for | |
3472 | * @name: the name of the event to search for | |
3473 | * | |
3474 | * This returns an event with a given @name and under the system | |
3475 | * @sys. If @sys is NULL the first event with @name is returned. | |
3476 | */ | |
3477 | struct event_format * | |
3478 | pevent_find_event_by_name(struct pevent *pevent, | |
3479 | const char *sys, const char *name) | |
3480 | { | |
3481 | struct event_format *event; | |
3482 | int i; | |
3483 | ||
3484 | if (pevent->last_event && | |
3485 | strcmp(pevent->last_event->name, name) == 0 && | |
3486 | (!sys || strcmp(pevent->last_event->system, sys) == 0)) | |
3487 | return pevent->last_event; | |
3488 | ||
3489 | for (i = 0; i < pevent->nr_events; i++) { | |
3490 | event = pevent->events[i]; | |
3491 | if (strcmp(event->name, name) == 0) { | |
3492 | if (!sys) | |
3493 | break; | |
3494 | if (strcmp(event->system, sys) == 0) | |
3495 | break; | |
3496 | } | |
3497 | } | |
3498 | if (i == pevent->nr_events) | |
3499 | event = NULL; | |
3500 | ||
3501 | pevent->last_event = event; | |
3502 | return event; | |
3503 | } | |
3504 | ||
3505 | static unsigned long long | |
3506 | eval_num_arg(void *data, int size, struct event_format *event, struct print_arg *arg) | |
3507 | { | |
3508 | struct pevent *pevent = event->pevent; | |
3509 | unsigned long long val = 0; | |
3510 | unsigned long long left, right; | |
3511 | struct print_arg *typearg = NULL; | |
3512 | struct print_arg *larg; | |
3513 | unsigned long offset; | |
3514 | unsigned int field_size; | |
3515 | ||
3516 | switch (arg->type) { | |
3517 | case PRINT_NULL: | |
3518 | /* ?? */ | |
3519 | return 0; | |
3520 | case PRINT_ATOM: | |
3521 | return strtoull(arg->atom.atom, NULL, 0); | |
3522 | case PRINT_FIELD: | |
3523 | if (!arg->field.field) { | |
3524 | arg->field.field = pevent_find_any_field(event, arg->field.name); | |
3525 | if (!arg->field.field) | |
a6d2a61a ACM |
3526 | goto out_warning_field; |
3527 | ||
f7d82350 SR |
3528 | } |
3529 | /* must be a number */ | |
3530 | val = pevent_read_number(pevent, data + arg->field.field->offset, | |
3531 | arg->field.field->size); | |
3532 | break; | |
3533 | case PRINT_FLAGS: | |
3534 | case PRINT_SYMBOL: | |
b839e1e8 | 3535 | case PRINT_INT_ARRAY: |
e080e6f1 | 3536 | case PRINT_HEX: |
f7d82350 SR |
3537 | break; |
3538 | case PRINT_TYPE: | |
3539 | val = eval_num_arg(data, size, event, arg->typecast.item); | |
3540 | return eval_type(val, arg, 0); | |
3541 | case PRINT_STRING: | |
3542 | case PRINT_BSTRING: | |
473a778a | 3543 | case PRINT_BITMASK: |
f7d82350 SR |
3544 | return 0; |
3545 | case PRINT_FUNC: { | |
3546 | struct trace_seq s; | |
3547 | trace_seq_init(&s); | |
3548 | val = process_defined_func(&s, data, size, event, arg); | |
3549 | trace_seq_destroy(&s); | |
3550 | return val; | |
3551 | } | |
3552 | case PRINT_OP: | |
3553 | if (strcmp(arg->op.op, "[") == 0) { | |
3554 | /* | |
3555 | * Arrays are special, since we don't want | |
3556 | * to read the arg as is. | |
3557 | */ | |
3558 | right = eval_num_arg(data, size, event, arg->op.right); | |
3559 | ||
3560 | /* handle typecasts */ | |
3561 | larg = arg->op.left; | |
3562 | while (larg->type == PRINT_TYPE) { | |
3563 | if (!typearg) | |
3564 | typearg = larg; | |
3565 | larg = larg->typecast.item; | |
3566 | } | |
3567 | ||
3568 | /* Default to long size */ | |
3569 | field_size = pevent->long_size; | |
3570 | ||
3571 | switch (larg->type) { | |
3572 | case PRINT_DYNAMIC_ARRAY: | |
3573 | offset = pevent_read_number(pevent, | |
3574 | data + larg->dynarray.field->offset, | |
3575 | larg->dynarray.field->size); | |
3576 | if (larg->dynarray.field->elementsize) | |
3577 | field_size = larg->dynarray.field->elementsize; | |
3578 | /* | |
3579 | * The actual length of the dynamic array is stored | |
3580 | * in the top half of the field, and the offset | |
3581 | * is in the bottom half of the 32 bit field. | |
3582 | */ | |
3583 | offset &= 0xffff; | |
3584 | offset += right; | |
3585 | break; | |
3586 | case PRINT_FIELD: | |
3587 | if (!larg->field.field) { | |
3588 | larg->field.field = | |
3589 | pevent_find_any_field(event, larg->field.name); | |
a6d2a61a ACM |
3590 | if (!larg->field.field) { |
3591 | arg = larg; | |
3592 | goto out_warning_field; | |
3593 | } | |
f7d82350 SR |
3594 | } |
3595 | field_size = larg->field.field->elementsize; | |
3596 | offset = larg->field.field->offset + | |
3597 | right * larg->field.field->elementsize; | |
3598 | break; | |
3599 | default: | |
3600 | goto default_op; /* oops, all bets off */ | |
3601 | } | |
3602 | val = pevent_read_number(pevent, | |
3603 | data + offset, field_size); | |
3604 | if (typearg) | |
3605 | val = eval_type(val, typearg, 1); | |
3606 | break; | |
3607 | } else if (strcmp(arg->op.op, "?") == 0) { | |
3608 | left = eval_num_arg(data, size, event, arg->op.left); | |
3609 | arg = arg->op.right; | |
3610 | if (left) | |
3611 | val = eval_num_arg(data, size, event, arg->op.left); | |
3612 | else | |
3613 | val = eval_num_arg(data, size, event, arg->op.right); | |
3614 | break; | |
3615 | } | |
3616 | default_op: | |
3617 | left = eval_num_arg(data, size, event, arg->op.left); | |
3618 | right = eval_num_arg(data, size, event, arg->op.right); | |
3619 | switch (arg->op.op[0]) { | |
3620 | case '!': | |
3621 | switch (arg->op.op[1]) { | |
3622 | case 0: | |
3623 | val = !right; | |
3624 | break; | |
3625 | case '=': | |
3626 | val = left != right; | |
3627 | break; | |
3628 | default: | |
a6d2a61a | 3629 | goto out_warning_op; |
f7d82350 SR |
3630 | } |
3631 | break; | |
3632 | case '~': | |
3633 | val = ~right; | |
3634 | break; | |
3635 | case '|': | |
3636 | if (arg->op.op[1]) | |
3637 | val = left || right; | |
3638 | else | |
3639 | val = left | right; | |
3640 | break; | |
3641 | case '&': | |
3642 | if (arg->op.op[1]) | |
3643 | val = left && right; | |
3644 | else | |
3645 | val = left & right; | |
3646 | break; | |
3647 | case '<': | |
3648 | switch (arg->op.op[1]) { | |
3649 | case 0: | |
3650 | val = left < right; | |
3651 | break; | |
3652 | case '<': | |
3653 | val = left << right; | |
3654 | break; | |
3655 | case '=': | |
3656 | val = left <= right; | |
3657 | break; | |
3658 | default: | |
a6d2a61a | 3659 | goto out_warning_op; |
f7d82350 SR |
3660 | } |
3661 | break; | |
3662 | case '>': | |
3663 | switch (arg->op.op[1]) { | |
3664 | case 0: | |
3665 | val = left > right; | |
3666 | break; | |
3667 | case '>': | |
3668 | val = left >> right; | |
3669 | break; | |
3670 | case '=': | |
3671 | val = left >= right; | |
3672 | break; | |
3673 | default: | |
a6d2a61a | 3674 | goto out_warning_op; |
f7d82350 SR |
3675 | } |
3676 | break; | |
3677 | case '=': | |
3678 | if (arg->op.op[1] != '=') | |
a6d2a61a ACM |
3679 | goto out_warning_op; |
3680 | ||
f7d82350 SR |
3681 | val = left == right; |
3682 | break; | |
3683 | case '-': | |
3684 | val = left - right; | |
3685 | break; | |
3686 | case '+': | |
3687 | val = left + right; | |
3688 | break; | |
2e7a5fc8 SR |
3689 | case '/': |
3690 | val = left / right; | |
3691 | break; | |
3692 | case '*': | |
3693 | val = left * right; | |
3694 | break; | |
f7d82350 | 3695 | default: |
a6d2a61a | 3696 | goto out_warning_op; |
f7d82350 SR |
3697 | } |
3698 | break; | |
76055940 HK |
3699 | case PRINT_DYNAMIC_ARRAY_LEN: |
3700 | offset = pevent_read_number(pevent, | |
3701 | data + arg->dynarray.field->offset, | |
3702 | arg->dynarray.field->size); | |
3703 | /* | |
3704 | * The total allocated length of the dynamic array is | |
3705 | * stored in the top half of the field, and the offset | |
3706 | * is in the bottom half of the 32 bit field. | |
3707 | */ | |
3708 | val = (unsigned long long)(offset >> 16); | |
3709 | break; | |
0497a9eb SR |
3710 | case PRINT_DYNAMIC_ARRAY: |
3711 | /* Without [], we pass the address to the dynamic data */ | |
3712 | offset = pevent_read_number(pevent, | |
3713 | data + arg->dynarray.field->offset, | |
3714 | arg->dynarray.field->size); | |
3715 | /* | |
76055940 HK |
3716 | * The total allocated length of the dynamic array is |
3717 | * stored in the top half of the field, and the offset | |
0497a9eb SR |
3718 | * is in the bottom half of the 32 bit field. |
3719 | */ | |
3720 | offset &= 0xffff; | |
6b5fa0ba | 3721 | val = (unsigned long long)((unsigned long)data + offset); |
0497a9eb | 3722 | break; |
f7d82350 SR |
3723 | default: /* not sure what to do there */ |
3724 | return 0; | |
3725 | } | |
3726 | return val; | |
a6d2a61a ACM |
3727 | |
3728 | out_warning_op: | |
3388cc3e | 3729 | do_warning_event(event, "%s: unknown op '%s'", __func__, arg->op.op); |
a6d2a61a ACM |
3730 | return 0; |
3731 | ||
3732 | out_warning_field: | |
3388cc3e NK |
3733 | do_warning_event(event, "%s: field %s not found", |
3734 | __func__, arg->field.name); | |
a6d2a61a | 3735 | return 0; |
f7d82350 SR |
3736 | } |
3737 | ||
3738 | struct flag { | |
3739 | const char *name; | |
3740 | unsigned long long value; | |
3741 | }; | |
3742 | ||
3743 | static const struct flag flags[] = { | |
3744 | { "HI_SOFTIRQ", 0 }, | |
3745 | { "TIMER_SOFTIRQ", 1 }, | |
3746 | { "NET_TX_SOFTIRQ", 2 }, | |
3747 | { "NET_RX_SOFTIRQ", 3 }, | |
3748 | { "BLOCK_SOFTIRQ", 4 }, | |
511cbce2 | 3749 | { "IRQ_POLL_SOFTIRQ", 5 }, |
f7d82350 SR |
3750 | { "TASKLET_SOFTIRQ", 6 }, |
3751 | { "SCHED_SOFTIRQ", 7 }, | |
3752 | { "HRTIMER_SOFTIRQ", 8 }, | |
3753 | { "RCU_SOFTIRQ", 9 }, | |
3754 | ||
3755 | { "HRTIMER_NORESTART", 0 }, | |
3756 | { "HRTIMER_RESTART", 1 }, | |
3757 | }; | |
3758 | ||
7c27f78a | 3759 | static long long eval_flag(const char *flag) |
f7d82350 SR |
3760 | { |
3761 | int i; | |
3762 | ||
3763 | /* | |
3764 | * Some flags in the format files do not get converted. | |
3765 | * If the flag is not numeric, see if it is something that | |
3766 | * we already know about. | |
3767 | */ | |
3768 | if (isdigit(flag[0])) | |
3769 | return strtoull(flag, NULL, 0); | |
3770 | ||
3771 | for (i = 0; i < (int)(sizeof(flags)/sizeof(flags[0])); i++) | |
3772 | if (strcmp(flags[i].name, flag) == 0) | |
3773 | return flags[i].value; | |
3774 | ||
7c27f78a | 3775 | return -1LL; |
f7d82350 SR |
3776 | } |
3777 | ||
3778 | static void print_str_to_seq(struct trace_seq *s, const char *format, | |
3779 | int len_arg, const char *str) | |
3780 | { | |
3781 | if (len_arg >= 0) | |
3782 | trace_seq_printf(s, format, len_arg, str); | |
3783 | else | |
3784 | trace_seq_printf(s, format, str); | |
3785 | } | |
3786 | ||
473a778a SRRH |
3787 | static void print_bitmask_to_seq(struct pevent *pevent, |
3788 | struct trace_seq *s, const char *format, | |
3789 | int len_arg, const void *data, int size) | |
3790 | { | |
3791 | int nr_bits = size * 8; | |
3792 | int str_size = (nr_bits + 3) / 4; | |
3793 | int len = 0; | |
3794 | char buf[3]; | |
3795 | char *str; | |
3796 | int index; | |
3797 | int i; | |
3798 | ||
3799 | /* | |
3800 | * The kernel likes to put in commas every 32 bits, we | |
3801 | * can do the same. | |
3802 | */ | |
3803 | str_size += (nr_bits - 1) / 32; | |
3804 | ||
3805 | str = malloc(str_size + 1); | |
3806 | if (!str) { | |
3807 | do_warning("%s: not enough memory!", __func__); | |
3808 | return; | |
3809 | } | |
3810 | str[str_size] = 0; | |
3811 | ||
3812 | /* Start out with -2 for the two chars per byte */ | |
3813 | for (i = str_size - 2; i >= 0; i -= 2) { | |
3814 | /* | |
3815 | * data points to a bit mask of size bytes. | |
3816 | * In the kernel, this is an array of long words, thus | |
3817 | * endianess is very important. | |
3818 | */ | |
3819 | if (pevent->file_bigendian) | |
3820 | index = size - (len + 1); | |
3821 | else | |
3822 | index = len; | |
3823 | ||
3824 | snprintf(buf, 3, "%02x", *((unsigned char *)data + index)); | |
3825 | memcpy(str + i, buf, 2); | |
3826 | len++; | |
3827 | if (!(len & 3) && i > 0) { | |
3828 | i--; | |
3829 | str[i] = ','; | |
3830 | } | |
3831 | } | |
3832 | ||
3833 | if (len_arg >= 0) | |
3834 | trace_seq_printf(s, format, len_arg, str); | |
3835 | else | |
3836 | trace_seq_printf(s, format, str); | |
3837 | ||
3838 | free(str); | |
3839 | } | |
3840 | ||
f7d82350 SR |
3841 | static void print_str_arg(struct trace_seq *s, void *data, int size, |
3842 | struct event_format *event, const char *format, | |
3843 | int len_arg, struct print_arg *arg) | |
3844 | { | |
3845 | struct pevent *pevent = event->pevent; | |
3846 | struct print_flag_sym *flag; | |
b7008071 | 3847 | struct format_field *field; |
0970b5f4 | 3848 | struct printk_map *printk; |
7c27f78a | 3849 | long long val, fval; |
c2e4b24f | 3850 | unsigned long long addr; |
f7d82350 | 3851 | char *str; |
e080e6f1 | 3852 | unsigned char *hex; |
f7d82350 | 3853 | int print; |
e080e6f1 | 3854 | int i, len; |
f7d82350 SR |
3855 | |
3856 | switch (arg->type) { | |
3857 | case PRINT_NULL: | |
3858 | /* ?? */ | |
3859 | return; | |
3860 | case PRINT_ATOM: | |
3861 | print_str_to_seq(s, format, len_arg, arg->atom.atom); | |
3862 | return; | |
3863 | case PRINT_FIELD: | |
b7008071 NK |
3864 | field = arg->field.field; |
3865 | if (!field) { | |
3866 | field = pevent_find_any_field(event, arg->field.name); | |
a6d2a61a ACM |
3867 | if (!field) { |
3868 | str = arg->field.name; | |
3869 | goto out_warning_field; | |
3870 | } | |
b7008071 | 3871 | arg->field.field = field; |
f7d82350 SR |
3872 | } |
3873 | /* Zero sized fields, mean the rest of the data */ | |
b7008071 | 3874 | len = field->size ? : size - field->offset; |
f7d82350 SR |
3875 | |
3876 | /* | |
3877 | * Some events pass in pointers. If this is not an array | |
3878 | * and the size is the same as long_size, assume that it | |
3879 | * is a pointer. | |
3880 | */ | |
b7008071 NK |
3881 | if (!(field->flags & FIELD_IS_ARRAY) && |
3882 | field->size == pevent->long_size) { | |
c2e4b24f KS |
3883 | |
3884 | /* Handle heterogeneous recording and processing | |
3885 | * architectures | |
3886 | * | |
3887 | * CASE I: | |
3888 | * Traces recorded on 32-bit devices (32-bit | |
3889 | * addressing) and processed on 64-bit devices: | |
3890 | * In this case, only 32 bits should be read. | |
3891 | * | |
3892 | * CASE II: | |
3893 | * Traces recorded on 64 bit devices and processed | |
3894 | * on 32-bit devices: | |
3895 | * In this case, 64 bits must be read. | |
3896 | */ | |
3897 | addr = (pevent->long_size == 8) ? | |
3898 | *(unsigned long long *)(data + field->offset) : | |
3899 | (unsigned long long)*(unsigned int *)(data + field->offset); | |
3900 | ||
0970b5f4 SRRH |
3901 | /* Check if it matches a print format */ |
3902 | printk = find_printk(pevent, addr); | |
3903 | if (printk) | |
3904 | trace_seq_puts(s, printk->printk); | |
3905 | else | |
c2e4b24f | 3906 | trace_seq_printf(s, "%llx", addr); |
f7d82350 SR |
3907 | break; |
3908 | } | |
a6d2a61a ACM |
3909 | str = malloc(len + 1); |
3910 | if (!str) { | |
3388cc3e NK |
3911 | do_warning_event(event, "%s: not enough memory!", |
3912 | __func__); | |
a6d2a61a ACM |
3913 | return; |
3914 | } | |
b7008071 | 3915 | memcpy(str, data + field->offset, len); |
f7d82350 SR |
3916 | str[len] = 0; |
3917 | print_str_to_seq(s, format, len_arg, str); | |
3918 | free(str); | |
3919 | break; | |
3920 | case PRINT_FLAGS: | |
3921 | val = eval_num_arg(data, size, event, arg->flags.field); | |
3922 | print = 0; | |
3923 | for (flag = arg->flags.flags; flag; flag = flag->next) { | |
3924 | fval = eval_flag(flag->value); | |
7c27f78a | 3925 | if (!val && fval < 0) { |
f7d82350 SR |
3926 | print_str_to_seq(s, format, len_arg, flag->str); |
3927 | break; | |
3928 | } | |
7c27f78a | 3929 | if (fval > 0 && (val & fval) == fval) { |
f7d82350 SR |
3930 | if (print && arg->flags.delim) |
3931 | trace_seq_puts(s, arg->flags.delim); | |
3932 | print_str_to_seq(s, format, len_arg, flag->str); | |
3933 | print = 1; | |
3934 | val &= ~fval; | |
3935 | } | |
3936 | } | |
3937 | break; | |
3938 | case PRINT_SYMBOL: | |
3939 | val = eval_num_arg(data, size, event, arg->symbol.field); | |
3940 | for (flag = arg->symbol.symbols; flag; flag = flag->next) { | |
3941 | fval = eval_flag(flag->value); | |
3942 | if (val == fval) { | |
3943 | print_str_to_seq(s, format, len_arg, flag->str); | |
3944 | break; | |
3945 | } | |
3946 | } | |
3947 | break; | |
e080e6f1 | 3948 | case PRINT_HEX: |
b30f75eb HC |
3949 | if (arg->hex.field->type == PRINT_DYNAMIC_ARRAY) { |
3950 | unsigned long offset; | |
3951 | offset = pevent_read_number(pevent, | |
3952 | data + arg->hex.field->dynarray.field->offset, | |
3953 | arg->hex.field->dynarray.field->size); | |
3954 | hex = data + (offset & 0xffff); | |
3955 | } else { | |
3956 | field = arg->hex.field->field.field; | |
3957 | if (!field) { | |
3958 | str = arg->hex.field->field.name; | |
3959 | field = pevent_find_any_field(event, str); | |
3960 | if (!field) | |
3961 | goto out_warning_field; | |
3962 | arg->hex.field->field.field = field; | |
3963 | } | |
3964 | hex = data + field->offset; | |
e080e6f1 | 3965 | } |
e080e6f1 NK |
3966 | len = eval_num_arg(data, size, event, arg->hex.size); |
3967 | for (i = 0; i < len; i++) { | |
3968 | if (i) | |
3969 | trace_seq_putc(s, ' '); | |
3970 | trace_seq_printf(s, "%02x", hex[i]); | |
3971 | } | |
3972 | break; | |
f7d82350 | 3973 | |
b839e1e8 JM |
3974 | case PRINT_INT_ARRAY: { |
3975 | void *num; | |
3976 | int el_size; | |
3977 | ||
3978 | if (arg->int_array.field->type == PRINT_DYNAMIC_ARRAY) { | |
3979 | unsigned long offset; | |
3980 | struct format_field *field = | |
3981 | arg->int_array.field->dynarray.field; | |
3982 | offset = pevent_read_number(pevent, | |
3983 | data + field->offset, | |
3984 | field->size); | |
3985 | num = data + (offset & 0xffff); | |
3986 | } else { | |
3987 | field = arg->int_array.field->field.field; | |
3988 | if (!field) { | |
3989 | str = arg->int_array.field->field.name; | |
3990 | field = pevent_find_any_field(event, str); | |
3991 | if (!field) | |
3992 | goto out_warning_field; | |
3993 | arg->int_array.field->field.field = field; | |
3994 | } | |
3995 | num = data + field->offset; | |
3996 | } | |
3997 | len = eval_num_arg(data, size, event, arg->int_array.count); | |
3998 | el_size = eval_num_arg(data, size, event, | |
3999 | arg->int_array.el_size); | |
4000 | for (i = 0; i < len; i++) { | |
4001 | if (i) | |
4002 | trace_seq_putc(s, ' '); | |
4003 | ||
4004 | if (el_size == 1) { | |
4005 | trace_seq_printf(s, "%u", *(uint8_t *)num); | |
4006 | } else if (el_size == 2) { | |
4007 | trace_seq_printf(s, "%u", *(uint16_t *)num); | |
4008 | } else if (el_size == 4) { | |
4009 | trace_seq_printf(s, "%u", *(uint32_t *)num); | |
4010 | } else if (el_size == 8) { | |
410ceb8f | 4011 | trace_seq_printf(s, "%"PRIu64, *(uint64_t *)num); |
b839e1e8 JM |
4012 | } else { |
4013 | trace_seq_printf(s, "BAD SIZE:%d 0x%x", | |
4014 | el_size, *(uint8_t *)num); | |
4015 | el_size = 1; | |
4016 | } | |
4017 | ||
4018 | num += el_size; | |
4019 | } | |
4020 | break; | |
4021 | } | |
f7d82350 SR |
4022 | case PRINT_TYPE: |
4023 | break; | |
4024 | case PRINT_STRING: { | |
4025 | int str_offset; | |
4026 | ||
4027 | if (arg->string.offset == -1) { | |
4028 | struct format_field *f; | |
4029 | ||
4030 | f = pevent_find_any_field(event, arg->string.string); | |
4031 | arg->string.offset = f->offset; | |
4032 | } | |
4033 | str_offset = data2host4(pevent, data + arg->string.offset); | |
4034 | str_offset &= 0xffff; | |
4035 | print_str_to_seq(s, format, len_arg, ((char *)data) + str_offset); | |
4036 | break; | |
4037 | } | |
4038 | case PRINT_BSTRING: | |
c2e6dc2b | 4039 | print_str_to_seq(s, format, len_arg, arg->string.string); |
f7d82350 | 4040 | break; |
473a778a SRRH |
4041 | case PRINT_BITMASK: { |
4042 | int bitmask_offset; | |
4043 | int bitmask_size; | |
4044 | ||
4045 | if (arg->bitmask.offset == -1) { | |
4046 | struct format_field *f; | |
4047 | ||
4048 | f = pevent_find_any_field(event, arg->bitmask.bitmask); | |
4049 | arg->bitmask.offset = f->offset; | |
4050 | } | |
4051 | bitmask_offset = data2host4(pevent, data + arg->bitmask.offset); | |
4052 | bitmask_size = bitmask_offset >> 16; | |
4053 | bitmask_offset &= 0xffff; | |
4054 | print_bitmask_to_seq(pevent, s, format, len_arg, | |
4055 | data + bitmask_offset, bitmask_size); | |
4056 | break; | |
4057 | } | |
f7d82350 SR |
4058 | case PRINT_OP: |
4059 | /* | |
4060 | * The only op for string should be ? : | |
4061 | */ | |
4062 | if (arg->op.op[0] != '?') | |
4063 | return; | |
4064 | val = eval_num_arg(data, size, event, arg->op.left); | |
4065 | if (val) | |
4066 | print_str_arg(s, data, size, event, | |
4067 | format, len_arg, arg->op.right->op.left); | |
4068 | else | |
4069 | print_str_arg(s, data, size, event, | |
4070 | format, len_arg, arg->op.right->op.right); | |
4071 | break; | |
4072 | case PRINT_FUNC: | |
4073 | process_defined_func(s, data, size, event, arg); | |
4074 | break; | |
4075 | default: | |
4076 | /* well... */ | |
4077 | break; | |
4078 | } | |
a6d2a61a ACM |
4079 | |
4080 | return; | |
4081 | ||
4082 | out_warning_field: | |
3388cc3e NK |
4083 | do_warning_event(event, "%s: field %s not found", |
4084 | __func__, arg->field.name); | |
f7d82350 SR |
4085 | } |
4086 | ||
4087 | static unsigned long long | |
4088 | process_defined_func(struct trace_seq *s, void *data, int size, | |
4089 | struct event_format *event, struct print_arg *arg) | |
4090 | { | |
4091 | struct pevent_function_handler *func_handle = arg->func.func; | |
4092 | struct pevent_func_params *param; | |
4093 | unsigned long long *args; | |
4094 | unsigned long long ret; | |
4095 | struct print_arg *farg; | |
4096 | struct trace_seq str; | |
4097 | struct save_str { | |
4098 | struct save_str *next; | |
4099 | char *str; | |
4100 | } *strings = NULL, *string; | |
4101 | int i; | |
4102 | ||
4103 | if (!func_handle->nr_args) { | |
4104 | ret = (*func_handle->func)(s, NULL); | |
4105 | goto out; | |
4106 | } | |
4107 | ||
4108 | farg = arg->func.args; | |
4109 | param = func_handle->params; | |
4110 | ||
a6d2a61a ACM |
4111 | ret = ULLONG_MAX; |
4112 | args = malloc(sizeof(*args) * func_handle->nr_args); | |
4113 | if (!args) | |
4114 | goto out; | |
4115 | ||
f7d82350 SR |
4116 | for (i = 0; i < func_handle->nr_args; i++) { |
4117 | switch (param->type) { | |
4118 | case PEVENT_FUNC_ARG_INT: | |
4119 | case PEVENT_FUNC_ARG_LONG: | |
4120 | case PEVENT_FUNC_ARG_PTR: | |
4121 | args[i] = eval_num_arg(data, size, event, farg); | |
4122 | break; | |
4123 | case PEVENT_FUNC_ARG_STRING: | |
4124 | trace_seq_init(&str); | |
4125 | print_str_arg(&str, data, size, event, "%s", -1, farg); | |
4126 | trace_seq_terminate(&str); | |
a6d2a61a ACM |
4127 | string = malloc(sizeof(*string)); |
4128 | if (!string) { | |
3388cc3e NK |
4129 | do_warning_event(event, "%s(%d): malloc str", |
4130 | __func__, __LINE__); | |
a6d2a61a ACM |
4131 | goto out_free; |
4132 | } | |
f7d82350 SR |
4133 | string->next = strings; |
4134 | string->str = strdup(str.buffer); | |
a6d2a61a ACM |
4135 | if (!string->str) { |
4136 | free(string); | |
3388cc3e NK |
4137 | do_warning_event(event, "%s(%d): malloc str", |
4138 | __func__, __LINE__); | |
a6d2a61a ACM |
4139 | goto out_free; |
4140 | } | |
0cf26013 | 4141 | args[i] = (uintptr_t)string->str; |
f7d82350 SR |
4142 | strings = string; |
4143 | trace_seq_destroy(&str); | |
4144 | break; | |
4145 | default: | |
4146 | /* | |
4147 | * Something went totally wrong, this is not | |
4148 | * an input error, something in this code broke. | |
4149 | */ | |
3388cc3e | 4150 | do_warning_event(event, "Unexpected end of arguments\n"); |
a6d2a61a | 4151 | goto out_free; |
f7d82350 SR |
4152 | } |
4153 | farg = farg->next; | |
21c69e72 | 4154 | param = param->next; |
f7d82350 SR |
4155 | } |
4156 | ||
4157 | ret = (*func_handle->func)(s, args); | |
a6d2a61a | 4158 | out_free: |
f7d82350 SR |
4159 | free(args); |
4160 | while (strings) { | |
4161 | string = strings; | |
4162 | strings = string->next; | |
4163 | free(string->str); | |
4164 | free(string); | |
4165 | } | |
4166 | ||
4167 | out: | |
4168 | /* TBD : handle return type here */ | |
4169 | return ret; | |
4170 | } | |
4171 | ||
0dbca1e3 ACM |
4172 | static void free_args(struct print_arg *args) |
4173 | { | |
4174 | struct print_arg *next; | |
4175 | ||
4176 | while (args) { | |
4177 | next = args->next; | |
4178 | ||
4179 | free_arg(args); | |
4180 | args = next; | |
4181 | } | |
4182 | } | |
4183 | ||
f7d82350 SR |
4184 | static struct print_arg *make_bprint_args(char *fmt, void *data, int size, struct event_format *event) |
4185 | { | |
4186 | struct pevent *pevent = event->pevent; | |
4187 | struct format_field *field, *ip_field; | |
4188 | struct print_arg *args, *arg, **next; | |
4189 | unsigned long long ip, val; | |
4190 | char *ptr; | |
4191 | void *bptr; | |
c2e6dc2b | 4192 | int vsize; |
f7d82350 SR |
4193 | |
4194 | field = pevent->bprint_buf_field; | |
4195 | ip_field = pevent->bprint_ip_field; | |
4196 | ||
4197 | if (!field) { | |
4198 | field = pevent_find_field(event, "buf"); | |
a6d2a61a | 4199 | if (!field) { |
3388cc3e | 4200 | do_warning_event(event, "can't find buffer field for binary printk"); |
a6d2a61a ACM |
4201 | return NULL; |
4202 | } | |
f7d82350 | 4203 | ip_field = pevent_find_field(event, "ip"); |
a6d2a61a | 4204 | if (!ip_field) { |
3388cc3e | 4205 | do_warning_event(event, "can't find ip field for binary printk"); |
a6d2a61a ACM |
4206 | return NULL; |
4207 | } | |
f7d82350 SR |
4208 | pevent->bprint_buf_field = field; |
4209 | pevent->bprint_ip_field = ip_field; | |
4210 | } | |
4211 | ||
4212 | ip = pevent_read_number(pevent, data + ip_field->offset, ip_field->size); | |
4213 | ||
4214 | /* | |
4215 | * The first arg is the IP pointer. | |
4216 | */ | |
4217 | args = alloc_arg(); | |
b1ac754b | 4218 | if (!args) { |
3388cc3e NK |
4219 | do_warning_event(event, "%s(%d): not enough memory!", |
4220 | __func__, __LINE__); | |
b1ac754b NK |
4221 | return NULL; |
4222 | } | |
f7d82350 SR |
4223 | arg = args; |
4224 | arg->next = NULL; | |
4225 | next = &arg->next; | |
4226 | ||
4227 | arg->type = PRINT_ATOM; | |
0dbca1e3 ACM |
4228 | |
4229 | if (asprintf(&arg->atom.atom, "%lld", ip) < 0) | |
4230 | goto out_free; | |
f7d82350 | 4231 | |
bbedb179 | 4232 | /* skip the first "%ps: " */ |
0883d9d7 | 4233 | for (ptr = fmt + 5, bptr = data + field->offset; |
f7d82350 SR |
4234 | bptr < data + size && *ptr; ptr++) { |
4235 | int ls = 0; | |
4236 | ||
4237 | if (*ptr == '%') { | |
4238 | process_again: | |
4239 | ptr++; | |
4240 | switch (*ptr) { | |
4241 | case '%': | |
4242 | break; | |
4243 | case 'l': | |
4244 | ls++; | |
4245 | goto process_again; | |
4246 | case 'L': | |
4247 | ls = 2; | |
4248 | goto process_again; | |
4249 | case '0' ... '9': | |
4250 | goto process_again; | |
c2e6dc2b SR |
4251 | case '.': |
4252 | goto process_again; | |
55426296 SRRH |
4253 | case 'z': |
4254 | case 'Z': | |
4255 | ls = 1; | |
4256 | goto process_again; | |
f7d82350 SR |
4257 | case 'p': |
4258 | ls = 1; | |
4259 | /* fall through */ | |
4260 | case 'd': | |
4261 | case 'u': | |
4262 | case 'x': | |
4263 | case 'i': | |
f7d82350 SR |
4264 | switch (ls) { |
4265 | case 0: | |
c2e6dc2b | 4266 | vsize = 4; |
f7d82350 SR |
4267 | break; |
4268 | case 1: | |
c2e6dc2b | 4269 | vsize = pevent->long_size; |
f7d82350 SR |
4270 | break; |
4271 | case 2: | |
c2e6dc2b | 4272 | vsize = 8; |
c9bbabe3 | 4273 | break; |
f7d82350 | 4274 | default: |
c2e6dc2b | 4275 | vsize = ls; /* ? */ |
f7d82350 SR |
4276 | break; |
4277 | } | |
c2e6dc2b SR |
4278 | /* fall through */ |
4279 | case '*': | |
4280 | if (*ptr == '*') | |
4281 | vsize = 4; | |
4282 | ||
4283 | /* the pointers are always 4 bytes aligned */ | |
4284 | bptr = (void *)(((unsigned long)bptr + 3) & | |
4285 | ~3); | |
4286 | val = pevent_read_number(pevent, bptr, vsize); | |
4287 | bptr += vsize; | |
f7d82350 | 4288 | arg = alloc_arg(); |
b1ac754b | 4289 | if (!arg) { |
3388cc3e | 4290 | do_warning_event(event, "%s(%d): not enough memory!", |
b1ac754b NK |
4291 | __func__, __LINE__); |
4292 | goto out_free; | |
4293 | } | |
f7d82350 SR |
4294 | arg->next = NULL; |
4295 | arg->type = PRINT_ATOM; | |
0dbca1e3 ACM |
4296 | if (asprintf(&arg->atom.atom, "%lld", val) < 0) { |
4297 | free(arg); | |
4298 | goto out_free; | |
4299 | } | |
f7d82350 SR |
4300 | *next = arg; |
4301 | next = &arg->next; | |
c2e6dc2b SR |
4302 | /* |
4303 | * The '*' case means that an arg is used as the length. | |
4304 | * We need to continue to figure out for what. | |
4305 | */ | |
4306 | if (*ptr == '*') | |
4307 | goto process_again; | |
4308 | ||
f7d82350 SR |
4309 | break; |
4310 | case 's': | |
4311 | arg = alloc_arg(); | |
b1ac754b | 4312 | if (!arg) { |
3388cc3e | 4313 | do_warning_event(event, "%s(%d): not enough memory!", |
b1ac754b NK |
4314 | __func__, __LINE__); |
4315 | goto out_free; | |
4316 | } | |
f7d82350 SR |
4317 | arg->next = NULL; |
4318 | arg->type = PRINT_BSTRING; | |
4319 | arg->string.string = strdup(bptr); | |
ca63858e | 4320 | if (!arg->string.string) |
a6d2a61a | 4321 | goto out_free; |
f7d82350 SR |
4322 | bptr += strlen(bptr) + 1; |
4323 | *next = arg; | |
4324 | next = &arg->next; | |
4325 | default: | |
4326 | break; | |
4327 | } | |
4328 | } | |
4329 | } | |
4330 | ||
4331 | return args; | |
f7d82350 | 4332 | |
0dbca1e3 ACM |
4333 | out_free: |
4334 | free_args(args); | |
4335 | return NULL; | |
f7d82350 SR |
4336 | } |
4337 | ||
4338 | static char * | |
1d037ca1 IT |
4339 | get_bprint_format(void *data, int size __maybe_unused, |
4340 | struct event_format *event) | |
f7d82350 SR |
4341 | { |
4342 | struct pevent *pevent = event->pevent; | |
4343 | unsigned long long addr; | |
4344 | struct format_field *field; | |
4345 | struct printk_map *printk; | |
4346 | char *format; | |
f7d82350 SR |
4347 | |
4348 | field = pevent->bprint_fmt_field; | |
4349 | ||
4350 | if (!field) { | |
4351 | field = pevent_find_field(event, "fmt"); | |
a6d2a61a | 4352 | if (!field) { |
3388cc3e | 4353 | do_warning_event(event, "can't find format field for binary printk"); |
a6d2a61a ACM |
4354 | return NULL; |
4355 | } | |
f7d82350 SR |
4356 | pevent->bprint_fmt_field = field; |
4357 | } | |
4358 | ||
4359 | addr = pevent_read_number(pevent, data + field->offset, field->size); | |
4360 | ||
4361 | printk = find_printk(pevent, addr); | |
4362 | if (!printk) { | |
0883d9d7 | 4363 | if (asprintf(&format, "%%pf: (NO FORMAT FOUND at %llx)\n", addr) < 0) |
0dbca1e3 | 4364 | return NULL; |
f7d82350 SR |
4365 | return format; |
4366 | } | |
4367 | ||
0883d9d7 | 4368 | if (asprintf(&format, "%s: %s", "%pf", printk->printk) < 0) |
0dbca1e3 | 4369 | return NULL; |
f7d82350 SR |
4370 | |
4371 | return format; | |
4372 | } | |
4373 | ||
4374 | static void print_mac_arg(struct trace_seq *s, int mac, void *data, int size, | |
4375 | struct event_format *event, struct print_arg *arg) | |
4376 | { | |
4377 | unsigned char *buf; | |
27f94d52 | 4378 | const char *fmt = "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x"; |
f7d82350 SR |
4379 | |
4380 | if (arg->type == PRINT_FUNC) { | |
4381 | process_defined_func(s, data, size, event, arg); | |
4382 | return; | |
4383 | } | |
4384 | ||
4385 | if (arg->type != PRINT_FIELD) { | |
4386 | trace_seq_printf(s, "ARG TYPE NOT FIELD BUT %d", | |
4387 | arg->type); | |
4388 | return; | |
4389 | } | |
4390 | ||
4391 | if (mac == 'm') | |
4392 | fmt = "%.2x%.2x%.2x%.2x%.2x%.2x"; | |
4393 | if (!arg->field.field) { | |
4394 | arg->field.field = | |
4395 | pevent_find_any_field(event, arg->field.name); | |
a6d2a61a | 4396 | if (!arg->field.field) { |
3388cc3e NK |
4397 | do_warning_event(event, "%s: field %s not found", |
4398 | __func__, arg->field.name); | |
a6d2a61a ACM |
4399 | return; |
4400 | } | |
f7d82350 SR |
4401 | } |
4402 | if (arg->field.field->size != 6) { | |
4403 | trace_seq_printf(s, "INVALIDMAC"); | |
4404 | return; | |
4405 | } | |
4406 | buf = data + arg->field.field->offset; | |
4407 | trace_seq_printf(s, fmt, buf[0], buf[1], buf[2], buf[3], buf[4], buf[5]); | |
4408 | } | |
4409 | ||
3d199b5b DA |
4410 | static void print_ip4_addr(struct trace_seq *s, char i, unsigned char *buf) |
4411 | { | |
4412 | const char *fmt; | |
4413 | ||
4414 | if (i == 'i') | |
4415 | fmt = "%03d.%03d.%03d.%03d"; | |
4416 | else | |
4417 | fmt = "%d.%d.%d.%d"; | |
4418 | ||
4419 | trace_seq_printf(s, fmt, buf[0], buf[1], buf[2], buf[3]); | |
4420 | } | |
4421 | ||
4422 | static inline bool ipv6_addr_v4mapped(const struct in6_addr *a) | |
4423 | { | |
4424 | return ((unsigned long)(a->s6_addr32[0] | a->s6_addr32[1]) | | |
4425 | (unsigned long)(a->s6_addr32[2] ^ htonl(0x0000ffff))) == 0UL; | |
4426 | } | |
4427 | ||
4428 | static inline bool ipv6_addr_is_isatap(const struct in6_addr *addr) | |
4429 | { | |
4430 | return (addr->s6_addr32[2] | htonl(0x02000000)) == htonl(0x02005EFE); | |
4431 | } | |
4432 | ||
4433 | static void print_ip6c_addr(struct trace_seq *s, unsigned char *addr) | |
4434 | { | |
4435 | int i, j, range; | |
4436 | unsigned char zerolength[8]; | |
4437 | int longest = 1; | |
4438 | int colonpos = -1; | |
4439 | uint16_t word; | |
4440 | uint8_t hi, lo; | |
4441 | bool needcolon = false; | |
4442 | bool useIPv4; | |
4443 | struct in6_addr in6; | |
4444 | ||
4445 | memcpy(&in6, addr, sizeof(struct in6_addr)); | |
4446 | ||
4447 | useIPv4 = ipv6_addr_v4mapped(&in6) || ipv6_addr_is_isatap(&in6); | |
4448 | ||
4449 | memset(zerolength, 0, sizeof(zerolength)); | |
4450 | ||
4451 | if (useIPv4) | |
4452 | range = 6; | |
4453 | else | |
4454 | range = 8; | |
4455 | ||
4456 | /* find position of longest 0 run */ | |
4457 | for (i = 0; i < range; i++) { | |
4458 | for (j = i; j < range; j++) { | |
4459 | if (in6.s6_addr16[j] != 0) | |
4460 | break; | |
4461 | zerolength[i]++; | |
4462 | } | |
4463 | } | |
4464 | for (i = 0; i < range; i++) { | |
4465 | if (zerolength[i] > longest) { | |
4466 | longest = zerolength[i]; | |
4467 | colonpos = i; | |
4468 | } | |
4469 | } | |
4470 | if (longest == 1) /* don't compress a single 0 */ | |
4471 | colonpos = -1; | |
4472 | ||
4473 | /* emit address */ | |
4474 | for (i = 0; i < range; i++) { | |
4475 | if (i == colonpos) { | |
4476 | if (needcolon || i == 0) | |
4477 | trace_seq_printf(s, ":"); | |
4478 | trace_seq_printf(s, ":"); | |
4479 | needcolon = false; | |
4480 | i += longest - 1; | |
4481 | continue; | |
4482 | } | |
4483 | if (needcolon) { | |
4484 | trace_seq_printf(s, ":"); | |
4485 | needcolon = false; | |
4486 | } | |
4487 | /* hex u16 without leading 0s */ | |
4488 | word = ntohs(in6.s6_addr16[i]); | |
4489 | hi = word >> 8; | |
4490 | lo = word & 0xff; | |
4491 | if (hi) | |
4492 | trace_seq_printf(s, "%x%02x", hi, lo); | |
4493 | else | |
4494 | trace_seq_printf(s, "%x", lo); | |
4495 | ||
4496 | needcolon = true; | |
4497 | } | |
4498 | ||
4499 | if (useIPv4) { | |
4500 | if (needcolon) | |
4501 | trace_seq_printf(s, ":"); | |
4502 | print_ip4_addr(s, 'I', &in6.s6_addr[12]); | |
4503 | } | |
4504 | ||
4505 | return; | |
4506 | } | |
4507 | ||
4508 | static void print_ip6_addr(struct trace_seq *s, char i, unsigned char *buf) | |
4509 | { | |
4510 | int j; | |
4511 | ||
4512 | for (j = 0; j < 16; j += 2) { | |
4513 | trace_seq_printf(s, "%02x%02x", buf[j], buf[j+1]); | |
4514 | if (i == 'I' && j < 14) | |
4515 | trace_seq_printf(s, ":"); | |
4516 | } | |
4517 | } | |
4518 | ||
4519 | /* | |
4520 | * %pi4 print an IPv4 address with leading zeros | |
4521 | * %pI4 print an IPv4 address without leading zeros | |
4522 | * %pi6 print an IPv6 address without colons | |
4523 | * %pI6 print an IPv6 address with colons | |
4524 | * %pI6c print an IPv6 address in compressed form with colons | |
4525 | * %pISpc print an IP address based on sockaddr; p adds port. | |
4526 | */ | |
4527 | static int print_ipv4_arg(struct trace_seq *s, const char *ptr, char i, | |
4528 | void *data, int size, struct event_format *event, | |
4529 | struct print_arg *arg) | |
4530 | { | |
4531 | unsigned char *buf; | |
4532 | ||
4533 | if (arg->type == PRINT_FUNC) { | |
4534 | process_defined_func(s, data, size, event, arg); | |
4535 | return 0; | |
4536 | } | |
4537 | ||
4538 | if (arg->type != PRINT_FIELD) { | |
4539 | trace_seq_printf(s, "ARG TYPE NOT FIELD BUT %d", arg->type); | |
4540 | return 0; | |
4541 | } | |
4542 | ||
4543 | if (!arg->field.field) { | |
4544 | arg->field.field = | |
4545 | pevent_find_any_field(event, arg->field.name); | |
4546 | if (!arg->field.field) { | |
4547 | do_warning("%s: field %s not found", | |
4548 | __func__, arg->field.name); | |
4549 | return 0; | |
4550 | } | |
4551 | } | |
4552 | ||
4553 | buf = data + arg->field.field->offset; | |
4554 | ||
4555 | if (arg->field.field->size != 4) { | |
4556 | trace_seq_printf(s, "INVALIDIPv4"); | |
4557 | return 0; | |
4558 | } | |
4559 | print_ip4_addr(s, i, buf); | |
4560 | ||
4561 | return 0; | |
4562 | } | |
4563 | ||
4564 | static int print_ipv6_arg(struct trace_seq *s, const char *ptr, char i, | |
4565 | void *data, int size, struct event_format *event, | |
4566 | struct print_arg *arg) | |
4567 | { | |
4568 | char have_c = 0; | |
4569 | unsigned char *buf; | |
4570 | int rc = 0; | |
4571 | ||
4572 | /* pI6c */ | |
4573 | if (i == 'I' && *ptr == 'c') { | |
4574 | have_c = 1; | |
4575 | ptr++; | |
4576 | rc++; | |
4577 | } | |
4578 | ||
4579 | if (arg->type == PRINT_FUNC) { | |
4580 | process_defined_func(s, data, size, event, arg); | |
4581 | return rc; | |
4582 | } | |
4583 | ||
4584 | if (arg->type != PRINT_FIELD) { | |
4585 | trace_seq_printf(s, "ARG TYPE NOT FIELD BUT %d", arg->type); | |
4586 | return rc; | |
4587 | } | |
4588 | ||
4589 | if (!arg->field.field) { | |
4590 | arg->field.field = | |
4591 | pevent_find_any_field(event, arg->field.name); | |
4592 | if (!arg->field.field) { | |
4593 | do_warning("%s: field %s not found", | |
4594 | __func__, arg->field.name); | |
4595 | return rc; | |
4596 | } | |
4597 | } | |
4598 | ||
4599 | buf = data + arg->field.field->offset; | |
4600 | ||
4601 | if (arg->field.field->size != 16) { | |
4602 | trace_seq_printf(s, "INVALIDIPv6"); | |
4603 | return rc; | |
4604 | } | |
4605 | ||
4606 | if (have_c) | |
4607 | print_ip6c_addr(s, buf); | |
4608 | else | |
4609 | print_ip6_addr(s, i, buf); | |
4610 | ||
4611 | return rc; | |
4612 | } | |
4613 | ||
4614 | static int print_ipsa_arg(struct trace_seq *s, const char *ptr, char i, | |
4615 | void *data, int size, struct event_format *event, | |
4616 | struct print_arg *arg) | |
4617 | { | |
4618 | char have_c = 0, have_p = 0; | |
4619 | unsigned char *buf; | |
4620 | struct sockaddr_storage *sa; | |
4621 | int rc = 0; | |
4622 | ||
4623 | /* pISpc */ | |
4624 | if (i == 'I') { | |
4625 | if (*ptr == 'p') { | |
4626 | have_p = 1; | |
4627 | ptr++; | |
4628 | rc++; | |
4629 | } | |
4630 | if (*ptr == 'c') { | |
4631 | have_c = 1; | |
4632 | ptr++; | |
4633 | rc++; | |
4634 | } | |
4635 | } | |
4636 | ||
4637 | if (arg->type == PRINT_FUNC) { | |
4638 | process_defined_func(s, data, size, event, arg); | |
4639 | return rc; | |
4640 | } | |
4641 | ||
4642 | if (arg->type != PRINT_FIELD) { | |
4643 | trace_seq_printf(s, "ARG TYPE NOT FIELD BUT %d", arg->type); | |
4644 | return rc; | |
4645 | } | |
4646 | ||
4647 | if (!arg->field.field) { | |
4648 | arg->field.field = | |
4649 | pevent_find_any_field(event, arg->field.name); | |
4650 | if (!arg->field.field) { | |
4651 | do_warning("%s: field %s not found", | |
4652 | __func__, arg->field.name); | |
4653 | return rc; | |
4654 | } | |
4655 | } | |
4656 | ||
4657 | sa = (struct sockaddr_storage *) (data + arg->field.field->offset); | |
4658 | ||
4659 | if (sa->ss_family == AF_INET) { | |
4660 | struct sockaddr_in *sa4 = (struct sockaddr_in *) sa; | |
4661 | ||
4662 | if (arg->field.field->size < sizeof(struct sockaddr_in)) { | |
4663 | trace_seq_printf(s, "INVALIDIPv4"); | |
4664 | return rc; | |
4665 | } | |
4666 | ||
4667 | print_ip4_addr(s, i, (unsigned char *) &sa4->sin_addr); | |
4668 | if (have_p) | |
4669 | trace_seq_printf(s, ":%d", ntohs(sa4->sin_port)); | |
4670 | ||
4671 | ||
4672 | } else if (sa->ss_family == AF_INET6) { | |
4673 | struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *) sa; | |
4674 | ||
4675 | if (arg->field.field->size < sizeof(struct sockaddr_in6)) { | |
4676 | trace_seq_printf(s, "INVALIDIPv6"); | |
4677 | return rc; | |
4678 | } | |
4679 | ||
4680 | if (have_p) | |
4681 | trace_seq_printf(s, "["); | |
4682 | ||
4683 | buf = (unsigned char *) &sa6->sin6_addr; | |
4684 | if (have_c) | |
4685 | print_ip6c_addr(s, buf); | |
4686 | else | |
4687 | print_ip6_addr(s, i, buf); | |
4688 | ||
4689 | if (have_p) | |
4690 | trace_seq_printf(s, "]:%d", ntohs(sa6->sin6_port)); | |
4691 | } | |
4692 | ||
4693 | return rc; | |
4694 | } | |
4695 | ||
4696 | static int print_ip_arg(struct trace_seq *s, const char *ptr, | |
4697 | void *data, int size, struct event_format *event, | |
4698 | struct print_arg *arg) | |
4699 | { | |
4700 | char i = *ptr; /* 'i' or 'I' */ | |
4701 | char ver; | |
4702 | int rc = 0; | |
4703 | ||
4704 | ptr++; | |
4705 | rc++; | |
4706 | ||
4707 | ver = *ptr; | |
4708 | ptr++; | |
4709 | rc++; | |
4710 | ||
4711 | switch (ver) { | |
4712 | case '4': | |
4713 | rc += print_ipv4_arg(s, ptr, i, data, size, event, arg); | |
4714 | break; | |
4715 | case '6': | |
4716 | rc += print_ipv6_arg(s, ptr, i, data, size, event, arg); | |
4717 | break; | |
4718 | case 'S': | |
4719 | rc += print_ipsa_arg(s, ptr, i, data, size, event, arg); | |
4720 | break; | |
4721 | default: | |
4722 | return 0; | |
4723 | } | |
4724 | ||
4725 | return rc; | |
4726 | } | |
4727 | ||
600da3cf NK |
4728 | static int is_printable_array(char *p, unsigned int len) |
4729 | { | |
4730 | unsigned int i; | |
4731 | ||
4732 | for (i = 0; i < len && p[i]; i++) | |
5efb9fbd | 4733 | if (!isprint(p[i]) && !isspace(p[i])) |
600da3cf NK |
4734 | return 0; |
4735 | return 1; | |
4736 | } | |
4737 | ||
be45d40e NK |
4738 | void pevent_print_field(struct trace_seq *s, void *data, |
4739 | struct format_field *field) | |
f7d82350 | 4740 | { |
f7d82350 SR |
4741 | unsigned long long val; |
4742 | unsigned int offset, len, i; | |
be45d40e NK |
4743 | struct pevent *pevent = field->event->pevent; |
4744 | ||
4745 | if (field->flags & FIELD_IS_ARRAY) { | |
4746 | offset = field->offset; | |
4747 | len = field->size; | |
4748 | if (field->flags & FIELD_IS_DYNAMIC) { | |
4749 | val = pevent_read_number(pevent, data + offset, len); | |
4750 | offset = val; | |
4751 | len = offset >> 16; | |
4752 | offset &= 0xffff; | |
4753 | } | |
4754 | if (field->flags & FIELD_IS_STRING && | |
4755 | is_printable_array(data + offset, len)) { | |
4756 | trace_seq_printf(s, "%s", (char *)data + offset); | |
f7d82350 | 4757 | } else { |
be45d40e NK |
4758 | trace_seq_puts(s, "ARRAY["); |
4759 | for (i = 0; i < len; i++) { | |
4760 | if (i) | |
4761 | trace_seq_puts(s, ", "); | |
4762 | trace_seq_printf(s, "%02x", | |
4763 | *((unsigned char *)data + offset + i)); | |
4764 | } | |
4765 | trace_seq_putc(s, ']'); | |
4766 | field->flags &= ~FIELD_IS_STRING; | |
4767 | } | |
4768 | } else { | |
4769 | val = pevent_read_number(pevent, data + field->offset, | |
4770 | field->size); | |
4771 | if (field->flags & FIELD_IS_POINTER) { | |
4772 | trace_seq_printf(s, "0x%llx", val); | |
4773 | } else if (field->flags & FIELD_IS_SIGNED) { | |
4774 | switch (field->size) { | |
4775 | case 4: | |
4776 | /* | |
4777 | * If field is long then print it in hex. | |
4778 | * A long usually stores pointers. | |
4779 | */ | |
f7d82350 | 4780 | if (field->flags & FIELD_IS_LONG) |
be45d40e | 4781 | trace_seq_printf(s, "0x%x", (int)val); |
f7d82350 | 4782 | else |
be45d40e NK |
4783 | trace_seq_printf(s, "%d", (int)val); |
4784 | break; | |
4785 | case 2: | |
4786 | trace_seq_printf(s, "%2d", (short)val); | |
4787 | break; | |
4788 | case 1: | |
4789 | trace_seq_printf(s, "%1d", (char)val); | |
4790 | break; | |
4791 | default: | |
4792 | trace_seq_printf(s, "%lld", val); | |
f7d82350 | 4793 | } |
be45d40e NK |
4794 | } else { |
4795 | if (field->flags & FIELD_IS_LONG) | |
4796 | trace_seq_printf(s, "0x%llx", val); | |
4797 | else | |
4798 | trace_seq_printf(s, "%llu", val); | |
f7d82350 | 4799 | } |
be45d40e NK |
4800 | } |
4801 | } | |
4802 | ||
4803 | void pevent_print_fields(struct trace_seq *s, void *data, | |
4804 | int size __maybe_unused, struct event_format *event) | |
4805 | { | |
4806 | struct format_field *field; | |
4807 | ||
4808 | field = event->format.fields; | |
4809 | while (field) { | |
4810 | trace_seq_printf(s, " %s=", field->name); | |
4811 | pevent_print_field(s, data, field); | |
f7d82350 SR |
4812 | field = field->next; |
4813 | } | |
4814 | } | |
4815 | ||
4816 | static void pretty_print(struct trace_seq *s, void *data, int size, struct event_format *event) | |
4817 | { | |
4818 | struct pevent *pevent = event->pevent; | |
4819 | struct print_fmt *print_fmt = &event->print_fmt; | |
4820 | struct print_arg *arg = print_fmt->args; | |
4821 | struct print_arg *args = NULL; | |
4822 | const char *ptr = print_fmt->format; | |
4823 | unsigned long long val; | |
4824 | struct func_map *func; | |
4825 | const char *saveptr; | |
12e55569 | 4826 | struct trace_seq p; |
f7d82350 SR |
4827 | char *bprint_fmt = NULL; |
4828 | char format[32]; | |
4829 | int show_func; | |
4830 | int len_as_arg; | |
4831 | int len_arg; | |
4832 | int len; | |
4833 | int ls; | |
4834 | ||
4835 | if (event->flags & EVENT_FL_FAILED) { | |
4836 | trace_seq_printf(s, "[FAILED TO PARSE]"); | |
be45d40e | 4837 | pevent_print_fields(s, data, size, event); |
f7d82350 SR |
4838 | return; |
4839 | } | |
4840 | ||
4841 | if (event->flags & EVENT_FL_ISBPRINT) { | |
4842 | bprint_fmt = get_bprint_format(data, size, event); | |
4843 | args = make_bprint_args(bprint_fmt, data, size, event); | |
4844 | arg = args; | |
4845 | ptr = bprint_fmt; | |
4846 | } | |
4847 | ||
4848 | for (; *ptr; ptr++) { | |
4849 | ls = 0; | |
4850 | if (*ptr == '\\') { | |
4851 | ptr++; | |
4852 | switch (*ptr) { | |
4853 | case 'n': | |
4854 | trace_seq_putc(s, '\n'); | |
4855 | break; | |
4856 | case 't': | |
4857 | trace_seq_putc(s, '\t'); | |
4858 | break; | |
4859 | case 'r': | |
4860 | trace_seq_putc(s, '\r'); | |
4861 | break; | |
4862 | case '\\': | |
4863 | trace_seq_putc(s, '\\'); | |
4864 | break; | |
4865 | default: | |
4866 | trace_seq_putc(s, *ptr); | |
4867 | break; | |
4868 | } | |
4869 | ||
4870 | } else if (*ptr == '%') { | |
4871 | saveptr = ptr; | |
4872 | show_func = 0; | |
4873 | len_as_arg = 0; | |
4874 | cont_process: | |
4875 | ptr++; | |
4876 | switch (*ptr) { | |
4877 | case '%': | |
4878 | trace_seq_putc(s, '%'); | |
4879 | break; | |
4880 | case '#': | |
4881 | /* FIXME: need to handle properly */ | |
4882 | goto cont_process; | |
4883 | case 'h': | |
4884 | ls--; | |
4885 | goto cont_process; | |
4886 | case 'l': | |
4887 | ls++; | |
4888 | goto cont_process; | |
4889 | case 'L': | |
4890 | ls = 2; | |
4891 | goto cont_process; | |
4892 | case '*': | |
4893 | /* The argument is the length. */ | |
245c5a18 | 4894 | if (!arg) { |
3388cc3e | 4895 | do_warning_event(event, "no argument match"); |
245c5a18 NK |
4896 | event->flags |= EVENT_FL_FAILED; |
4897 | goto out_failed; | |
4898 | } | |
f7d82350 SR |
4899 | len_arg = eval_num_arg(data, size, event, arg); |
4900 | len_as_arg = 1; | |
4901 | arg = arg->next; | |
4902 | goto cont_process; | |
4903 | case '.': | |
4904 | case 'z': | |
4905 | case 'Z': | |
4906 | case '0' ... '9': | |
1d945012 | 4907 | case '-': |
f7d82350 SR |
4908 | goto cont_process; |
4909 | case 'p': | |
4910 | if (pevent->long_size == 4) | |
4911 | ls = 1; | |
4912 | else | |
4913 | ls = 2; | |
4914 | ||
b6bd9c7d SW |
4915 | if (*(ptr+1) == 'F' || *(ptr+1) == 'f' || |
4916 | *(ptr+1) == 'S' || *(ptr+1) == 's') { | |
f7d82350 SR |
4917 | ptr++; |
4918 | show_func = *ptr; | |
4919 | } else if (*(ptr+1) == 'M' || *(ptr+1) == 'm') { | |
4920 | print_mac_arg(s, *(ptr+1), data, size, event, arg); | |
4921 | ptr++; | |
aaf05c72 | 4922 | arg = arg->next; |
f7d82350 | 4923 | break; |
3d199b5b DA |
4924 | } else if (*(ptr+1) == 'I' || *(ptr+1) == 'i') { |
4925 | int n; | |
4926 | ||
4927 | n = print_ip_arg(s, ptr+1, data, size, event, arg); | |
4928 | if (n > 0) { | |
4929 | ptr += n; | |
4930 | arg = arg->next; | |
4931 | break; | |
4932 | } | |
f7d82350 SR |
4933 | } |
4934 | ||
4935 | /* fall through */ | |
4936 | case 'd': | |
4937 | case 'i': | |
4938 | case 'x': | |
4939 | case 'X': | |
4940 | case 'u': | |
245c5a18 | 4941 | if (!arg) { |
3388cc3e | 4942 | do_warning_event(event, "no argument match"); |
245c5a18 NK |
4943 | event->flags |= EVENT_FL_FAILED; |
4944 | goto out_failed; | |
4945 | } | |
f7d82350 SR |
4946 | |
4947 | len = ((unsigned long)ptr + 1) - | |
4948 | (unsigned long)saveptr; | |
4949 | ||
4950 | /* should never happen */ | |
245c5a18 | 4951 | if (len > 31) { |
3388cc3e | 4952 | do_warning_event(event, "bad format!"); |
245c5a18 NK |
4953 | event->flags |= EVENT_FL_FAILED; |
4954 | len = 31; | |
4955 | } | |
f7d82350 SR |
4956 | |
4957 | memcpy(format, saveptr, len); | |
4958 | format[len] = 0; | |
4959 | ||
4960 | val = eval_num_arg(data, size, event, arg); | |
4961 | arg = arg->next; | |
4962 | ||
4963 | if (show_func) { | |
4964 | func = find_func(pevent, val); | |
4965 | if (func) { | |
4966 | trace_seq_puts(s, func->func); | |
4967 | if (show_func == 'F') | |
4968 | trace_seq_printf(s, | |
4969 | "+0x%llx", | |
4970 | val - func->addr); | |
4971 | break; | |
4972 | } | |
4973 | } | |
c5b35b73 WM |
4974 | if (pevent->long_size == 8 && ls && |
4975 | sizeof(long) != 8) { | |
f7d82350 SR |
4976 | char *p; |
4977 | ||
f7d82350 | 4978 | /* make %l into %ll */ |
32abc2ed | 4979 | if (ls == 1 && (p = strchr(format, 'l'))) |
c5b35b73 | 4980 | memmove(p+1, p, strlen(p)+1); |
f7d82350 SR |
4981 | else if (strcmp(format, "%p") == 0) |
4982 | strcpy(format, "0x%llx"); | |
32abc2ed | 4983 | ls = 2; |
f7d82350 SR |
4984 | } |
4985 | switch (ls) { | |
4986 | case -2: | |
4987 | if (len_as_arg) | |
4988 | trace_seq_printf(s, format, len_arg, (char)val); | |
4989 | else | |
4990 | trace_seq_printf(s, format, (char)val); | |
4991 | break; | |
4992 | case -1: | |
4993 | if (len_as_arg) | |
4994 | trace_seq_printf(s, format, len_arg, (short)val); | |
4995 | else | |
4996 | trace_seq_printf(s, format, (short)val); | |
4997 | break; | |
4998 | case 0: | |
4999 | if (len_as_arg) | |
5000 | trace_seq_printf(s, format, len_arg, (int)val); | |
5001 | else | |
5002 | trace_seq_printf(s, format, (int)val); | |
5003 | break; | |
5004 | case 1: | |
5005 | if (len_as_arg) | |
5006 | trace_seq_printf(s, format, len_arg, (long)val); | |
5007 | else | |
5008 | trace_seq_printf(s, format, (long)val); | |
5009 | break; | |
5010 | case 2: | |
5011 | if (len_as_arg) | |
5012 | trace_seq_printf(s, format, len_arg, | |
5013 | (long long)val); | |
5014 | else | |
5015 | trace_seq_printf(s, format, (long long)val); | |
5016 | break; | |
5017 | default: | |
3388cc3e | 5018 | do_warning_event(event, "bad count (%d)", ls); |
245c5a18 | 5019 | event->flags |= EVENT_FL_FAILED; |
f7d82350 SR |
5020 | } |
5021 | break; | |
5022 | case 's': | |
245c5a18 | 5023 | if (!arg) { |
3388cc3e | 5024 | do_warning_event(event, "no matching argument"); |
245c5a18 NK |
5025 | event->flags |= EVENT_FL_FAILED; |
5026 | goto out_failed; | |
5027 | } | |
f7d82350 SR |
5028 | |
5029 | len = ((unsigned long)ptr + 1) - | |
5030 | (unsigned long)saveptr; | |
5031 | ||
5032 | /* should never happen */ | |
245c5a18 | 5033 | if (len > 31) { |
3388cc3e | 5034 | do_warning_event(event, "bad format!"); |
245c5a18 NK |
5035 | event->flags |= EVENT_FL_FAILED; |
5036 | len = 31; | |
5037 | } | |
f7d82350 SR |
5038 | |
5039 | memcpy(format, saveptr, len); | |
5040 | format[len] = 0; | |
5041 | if (!len_as_arg) | |
5042 | len_arg = -1; | |
12e55569 SR |
5043 | /* Use helper trace_seq */ |
5044 | trace_seq_init(&p); | |
5045 | print_str_arg(&p, data, size, event, | |
f7d82350 | 5046 | format, len_arg, arg); |
12e55569 SR |
5047 | trace_seq_terminate(&p); |
5048 | trace_seq_puts(s, p.buffer); | |
de04f865 | 5049 | trace_seq_destroy(&p); |
f7d82350 SR |
5050 | arg = arg->next; |
5051 | break; | |
5052 | default: | |
5053 | trace_seq_printf(s, ">%c<", *ptr); | |
5054 | ||
5055 | } | |
5056 | } else | |
5057 | trace_seq_putc(s, *ptr); | |
5058 | } | |
5059 | ||
245c5a18 NK |
5060 | if (event->flags & EVENT_FL_FAILED) { |
5061 | out_failed: | |
5062 | trace_seq_printf(s, "[FAILED TO PARSE]"); | |
5063 | } | |
5064 | ||
f7d82350 SR |
5065 | if (args) { |
5066 | free_args(args); | |
5067 | free(bprint_fmt); | |
5068 | } | |
5069 | } | |
5070 | ||
5071 | /** | |
5072 | * pevent_data_lat_fmt - parse the data for the latency format | |
5073 | * @pevent: a handle to the pevent | |
5074 | * @s: the trace_seq to write to | |
16e6b8fd | 5075 | * @record: the record to read from |
f7d82350 SR |
5076 | * |
5077 | * This parses out the Latency format (interrupts disabled, | |
5078 | * need rescheduling, in hard/soft interrupt, preempt count | |
5079 | * and lock depth) and places it into the trace_seq. | |
5080 | */ | |
5081 | void pevent_data_lat_fmt(struct pevent *pevent, | |
1c698186 | 5082 | struct trace_seq *s, struct pevent_record *record) |
f7d82350 SR |
5083 | { |
5084 | static int check_lock_depth = 1; | |
0866a97e | 5085 | static int check_migrate_disable = 1; |
f7d82350 | 5086 | static int lock_depth_exists; |
0866a97e | 5087 | static int migrate_disable_exists; |
f7d82350 SR |
5088 | unsigned int lat_flags; |
5089 | unsigned int pc; | |
5090 | int lock_depth; | |
0866a97e | 5091 | int migrate_disable; |
f7d82350 SR |
5092 | int hardirq; |
5093 | int softirq; | |
5094 | void *data = record->data; | |
5095 | ||
5096 | lat_flags = parse_common_flags(pevent, data); | |
5097 | pc = parse_common_pc(pevent, data); | |
5098 | /* lock_depth may not always exist */ | |
f7d82350 SR |
5099 | if (lock_depth_exists) |
5100 | lock_depth = parse_common_lock_depth(pevent, data); | |
0866a97e SR |
5101 | else if (check_lock_depth) { |
5102 | lock_depth = parse_common_lock_depth(pevent, data); | |
5103 | if (lock_depth < 0) | |
5104 | check_lock_depth = 0; | |
5105 | else | |
5106 | lock_depth_exists = 1; | |
5107 | } | |
5108 | ||
5109 | /* migrate_disable may not always exist */ | |
5110 | if (migrate_disable_exists) | |
5111 | migrate_disable = parse_common_migrate_disable(pevent, data); | |
5112 | else if (check_migrate_disable) { | |
5113 | migrate_disable = parse_common_migrate_disable(pevent, data); | |
5114 | if (migrate_disable < 0) | |
5115 | check_migrate_disable = 0; | |
5116 | else | |
5117 | migrate_disable_exists = 1; | |
5118 | } | |
f7d82350 SR |
5119 | |
5120 | hardirq = lat_flags & TRACE_FLAG_HARDIRQ; | |
5121 | softirq = lat_flags & TRACE_FLAG_SOFTIRQ; | |
5122 | ||
5123 | trace_seq_printf(s, "%c%c%c", | |
5124 | (lat_flags & TRACE_FLAG_IRQS_OFF) ? 'd' : | |
5125 | (lat_flags & TRACE_FLAG_IRQS_NOSUPPORT) ? | |
5126 | 'X' : '.', | |
5127 | (lat_flags & TRACE_FLAG_NEED_RESCHED) ? | |
5128 | 'N' : '.', | |
5129 | (hardirq && softirq) ? 'H' : | |
5130 | hardirq ? 'h' : softirq ? 's' : '.'); | |
5131 | ||
5132 | if (pc) | |
5133 | trace_seq_printf(s, "%x", pc); | |
5134 | else | |
5135 | trace_seq_putc(s, '.'); | |
5136 | ||
0866a97e SR |
5137 | if (migrate_disable_exists) { |
5138 | if (migrate_disable < 0) | |
5139 | trace_seq_putc(s, '.'); | |
5140 | else | |
5141 | trace_seq_printf(s, "%d", migrate_disable); | |
5142 | } | |
5143 | ||
f7d82350 SR |
5144 | if (lock_depth_exists) { |
5145 | if (lock_depth < 0) | |
5146 | trace_seq_putc(s, '.'); | |
5147 | else | |
5148 | trace_seq_printf(s, "%d", lock_depth); | |
5149 | } | |
5150 | ||
5151 | trace_seq_terminate(s); | |
5152 | } | |
5153 | ||
5154 | /** | |
5155 | * pevent_data_type - parse out the given event type | |
5156 | * @pevent: a handle to the pevent | |
5157 | * @rec: the record to read from | |
5158 | * | |
5159 | * This returns the event id from the @rec. | |
5160 | */ | |
1c698186 | 5161 | int pevent_data_type(struct pevent *pevent, struct pevent_record *rec) |
f7d82350 SR |
5162 | { |
5163 | return trace_parse_common_type(pevent, rec->data); | |
5164 | } | |
5165 | ||
5166 | /** | |
5167 | * pevent_data_event_from_type - find the event by a given type | |
5168 | * @pevent: a handle to the pevent | |
5169 | * @type: the type of the event. | |
5170 | * | |
5171 | * This returns the event form a given @type; | |
5172 | */ | |
5173 | struct event_format *pevent_data_event_from_type(struct pevent *pevent, int type) | |
5174 | { | |
5175 | return pevent_find_event(pevent, type); | |
5176 | } | |
5177 | ||
5178 | /** | |
5179 | * pevent_data_pid - parse the PID from raw data | |
5180 | * @pevent: a handle to the pevent | |
5181 | * @rec: the record to parse | |
5182 | * | |
5183 | * This returns the PID from a raw data. | |
5184 | */ | |
1c698186 | 5185 | int pevent_data_pid(struct pevent *pevent, struct pevent_record *rec) |
f7d82350 SR |
5186 | { |
5187 | return parse_common_pid(pevent, rec->data); | |
5188 | } | |
5189 | ||
5190 | /** | |
5191 | * pevent_data_comm_from_pid - return the command line from PID | |
5192 | * @pevent: a handle to the pevent | |
5193 | * @pid: the PID of the task to search for | |
5194 | * | |
5195 | * This returns a pointer to the command line that has the given | |
5196 | * @pid. | |
5197 | */ | |
5198 | const char *pevent_data_comm_from_pid(struct pevent *pevent, int pid) | |
5199 | { | |
5200 | const char *comm; | |
5201 | ||
5202 | comm = find_cmdline(pevent, pid); | |
5203 | return comm; | |
5204 | } | |
5205 | ||
2771984c SRRH |
5206 | static struct cmdline * |
5207 | pid_from_cmdlist(struct pevent *pevent, const char *comm, struct cmdline *next) | |
5208 | { | |
5209 | struct cmdline_list *cmdlist = (struct cmdline_list *)next; | |
5210 | ||
5211 | if (cmdlist) | |
5212 | cmdlist = cmdlist->next; | |
5213 | else | |
5214 | cmdlist = pevent->cmdlist; | |
5215 | ||
5216 | while (cmdlist && strcmp(cmdlist->comm, comm) != 0) | |
5217 | cmdlist = cmdlist->next; | |
5218 | ||
5219 | return (struct cmdline *)cmdlist; | |
5220 | } | |
5221 | ||
5222 | /** | |
5223 | * pevent_data_pid_from_comm - return the pid from a given comm | |
5224 | * @pevent: a handle to the pevent | |
5225 | * @comm: the cmdline to find the pid from | |
5226 | * @next: the cmdline structure to find the next comm | |
5227 | * | |
5228 | * This returns the cmdline structure that holds a pid for a given | |
5229 | * comm, or NULL if none found. As there may be more than one pid for | |
5230 | * a given comm, the result of this call can be passed back into | |
5231 | * a recurring call in the @next paramater, and then it will find the | |
5232 | * next pid. | |
5233 | * Also, it does a linear seach, so it may be slow. | |
5234 | */ | |
5235 | struct cmdline *pevent_data_pid_from_comm(struct pevent *pevent, const char *comm, | |
5236 | struct cmdline *next) | |
5237 | { | |
5238 | struct cmdline *cmdline; | |
5239 | ||
5240 | /* | |
5241 | * If the cmdlines have not been converted yet, then use | |
5242 | * the list. | |
5243 | */ | |
5244 | if (!pevent->cmdlines) | |
5245 | return pid_from_cmdlist(pevent, comm, next); | |
5246 | ||
5247 | if (next) { | |
5248 | /* | |
5249 | * The next pointer could have been still from | |
5250 | * a previous call before cmdlines were created | |
5251 | */ | |
5252 | if (next < pevent->cmdlines || | |
5253 | next >= pevent->cmdlines + pevent->cmdline_count) | |
5254 | next = NULL; | |
5255 | else | |
5256 | cmdline = next++; | |
5257 | } | |
5258 | ||
5259 | if (!next) | |
5260 | cmdline = pevent->cmdlines; | |
5261 | ||
5262 | while (cmdline < pevent->cmdlines + pevent->cmdline_count) { | |
5263 | if (strcmp(cmdline->comm, comm) == 0) | |
5264 | return cmdline; | |
5265 | cmdline++; | |
5266 | } | |
5267 | return NULL; | |
5268 | } | |
5269 | ||
5270 | /** | |
5271 | * pevent_cmdline_pid - return the pid associated to a given cmdline | |
5272 | * @cmdline: The cmdline structure to get the pid from | |
5273 | * | |
5274 | * Returns the pid for a give cmdline. If @cmdline is NULL, then | |
5275 | * -1 is returned. | |
5276 | */ | |
5277 | int pevent_cmdline_pid(struct pevent *pevent, struct cmdline *cmdline) | |
5278 | { | |
5279 | struct cmdline_list *cmdlist = (struct cmdline_list *)cmdline; | |
5280 | ||
5281 | if (!cmdline) | |
5282 | return -1; | |
5283 | ||
5284 | /* | |
5285 | * If cmdlines have not been created yet, or cmdline is | |
5286 | * not part of the array, then treat it as a cmdlist instead. | |
5287 | */ | |
5288 | if (!pevent->cmdlines || | |
5289 | cmdline < pevent->cmdlines || | |
5290 | cmdline >= pevent->cmdlines + pevent->cmdline_count) | |
5291 | return cmdlist->pid; | |
5292 | ||
5293 | return cmdline->pid; | |
5294 | } | |
5295 | ||
f7d82350 SR |
5296 | /** |
5297 | * pevent_data_comm_from_pid - parse the data into the print format | |
5298 | * @s: the trace_seq to write to | |
5299 | * @event: the handle to the event | |
16e6b8fd | 5300 | * @record: the record to read from |
f7d82350 SR |
5301 | * |
5302 | * This parses the raw @data using the given @event information and | |
5303 | * writes the print format into the trace_seq. | |
5304 | */ | |
5305 | void pevent_event_info(struct trace_seq *s, struct event_format *event, | |
1c698186 | 5306 | struct pevent_record *record) |
f7d82350 SR |
5307 | { |
5308 | int print_pretty = 1; | |
5309 | ||
c6c2b960 | 5310 | if (event->pevent->print_raw || (event->flags & EVENT_FL_PRINTRAW)) |
be45d40e | 5311 | pevent_print_fields(s, record->data, record->size, event); |
f7d82350 SR |
5312 | else { |
5313 | ||
c6c2b960 | 5314 | if (event->handler && !(event->flags & EVENT_FL_NOHANDLE)) |
f7d82350 SR |
5315 | print_pretty = event->handler(s, record, event, |
5316 | event->context); | |
5317 | ||
5318 | if (print_pretty) | |
5319 | pretty_print(s, record->data, record->size, event); | |
5320 | } | |
5321 | ||
5322 | trace_seq_terminate(s); | |
5323 | } | |
5324 | ||
1b372ca5 YY |
5325 | static bool is_timestamp_in_us(char *trace_clock, bool use_trace_clock) |
5326 | { | |
5327 | if (!use_trace_clock) | |
5328 | return true; | |
5329 | ||
5330 | if (!strcmp(trace_clock, "local") || !strcmp(trace_clock, "global") | |
5331 | || !strcmp(trace_clock, "uptime") || !strcmp(trace_clock, "perf")) | |
5332 | return true; | |
5333 | ||
5334 | /* trace_clock is setting in tsc or counter mode */ | |
5335 | return false; | |
5336 | } | |
5337 | ||
f7d82350 | 5338 | void pevent_print_event(struct pevent *pevent, struct trace_seq *s, |
1b372ca5 | 5339 | struct pevent_record *record, bool use_trace_clock) |
f7d82350 | 5340 | { |
27f94d52 | 5341 | static const char *spaces = " "; /* 20 spaces */ |
f7d82350 SR |
5342 | struct event_format *event; |
5343 | unsigned long secs; | |
5344 | unsigned long usecs; | |
4dc1024a | 5345 | unsigned long nsecs; |
f7d82350 SR |
5346 | const char *comm; |
5347 | void *data = record->data; | |
5348 | int type; | |
5349 | int pid; | |
5350 | int len; | |
4dc1024a | 5351 | int p; |
1b372ca5 | 5352 | bool use_usec_format; |
f7d82350 | 5353 | |
1b372ca5 YY |
5354 | use_usec_format = is_timestamp_in_us(pevent->trace_clock, |
5355 | use_trace_clock); | |
5356 | if (use_usec_format) { | |
5357 | secs = record->ts / NSECS_PER_SEC; | |
5358 | nsecs = record->ts - secs * NSECS_PER_SEC; | |
5359 | } | |
f7d82350 SR |
5360 | |
5361 | if (record->size < 0) { | |
5362 | do_warning("ug! negative record size %d", record->size); | |
5363 | return; | |
5364 | } | |
5365 | ||
5366 | type = trace_parse_common_type(pevent, data); | |
5367 | ||
5368 | event = pevent_find_event(pevent, type); | |
5369 | if (!event) { | |
5370 | do_warning("ug! no event found for type %d", type); | |
5371 | return; | |
5372 | } | |
5373 | ||
5374 | pid = parse_common_pid(pevent, data); | |
5375 | comm = find_cmdline(pevent, pid); | |
5376 | ||
5377 | if (pevent->latency_format) { | |
5378 | trace_seq_printf(s, "%8.8s-%-5d %3d", | |
5379 | comm, pid, record->cpu); | |
5380 | pevent_data_lat_fmt(pevent, s, record); | |
5381 | } else | |
5382 | trace_seq_printf(s, "%16s-%-5d [%03d]", comm, pid, record->cpu); | |
5383 | ||
1b372ca5 YY |
5384 | if (use_usec_format) { |
5385 | if (pevent->flags & PEVENT_NSEC_OUTPUT) { | |
5386 | usecs = nsecs; | |
5387 | p = 9; | |
5388 | } else { | |
5389 | usecs = (nsecs + 500) / NSECS_PER_USEC; | |
5390 | p = 6; | |
5391 | } | |
4dc1024a | 5392 | |
1b372ca5 YY |
5393 | trace_seq_printf(s, " %5lu.%0*lu: %s: ", |
5394 | secs, p, usecs, event->name); | |
5395 | } else | |
5396 | trace_seq_printf(s, " %12llu: %s: ", | |
5397 | record->ts, event->name); | |
f7d82350 SR |
5398 | |
5399 | /* Space out the event names evenly. */ | |
5400 | len = strlen(event->name); | |
5401 | if (len < 20) | |
5402 | trace_seq_printf(s, "%.*s", 20 - len, spaces); | |
5403 | ||
5404 | pevent_event_info(s, event, record); | |
5405 | } | |
5406 | ||
5407 | static int events_id_cmp(const void *a, const void *b) | |
5408 | { | |
5409 | struct event_format * const * ea = a; | |
5410 | struct event_format * const * eb = b; | |
5411 | ||
5412 | if ((*ea)->id < (*eb)->id) | |
5413 | return -1; | |
5414 | ||
5415 | if ((*ea)->id > (*eb)->id) | |
5416 | return 1; | |
5417 | ||
5418 | return 0; | |
5419 | } | |
5420 | ||
5421 | static int events_name_cmp(const void *a, const void *b) | |
5422 | { | |
5423 | struct event_format * const * ea = a; | |
5424 | struct event_format * const * eb = b; | |
5425 | int res; | |
5426 | ||
5427 | res = strcmp((*ea)->name, (*eb)->name); | |
5428 | if (res) | |
5429 | return res; | |
5430 | ||
5431 | res = strcmp((*ea)->system, (*eb)->system); | |
5432 | if (res) | |
5433 | return res; | |
5434 | ||
5435 | return events_id_cmp(a, b); | |
5436 | } | |
5437 | ||
5438 | static int events_system_cmp(const void *a, const void *b) | |
5439 | { | |
5440 | struct event_format * const * ea = a; | |
5441 | struct event_format * const * eb = b; | |
5442 | int res; | |
5443 | ||
5444 | res = strcmp((*ea)->system, (*eb)->system); | |
5445 | if (res) | |
5446 | return res; | |
5447 | ||
5448 | res = strcmp((*ea)->name, (*eb)->name); | |
5449 | if (res) | |
5450 | return res; | |
5451 | ||
5452 | return events_id_cmp(a, b); | |
5453 | } | |
5454 | ||
5455 | struct event_format **pevent_list_events(struct pevent *pevent, enum event_sort_type sort_type) | |
5456 | { | |
5457 | struct event_format **events; | |
5458 | int (*sort)(const void *a, const void *b); | |
5459 | ||
5460 | events = pevent->sort_events; | |
5461 | ||
5462 | if (events && pevent->last_type == sort_type) | |
5463 | return events; | |
5464 | ||
5465 | if (!events) { | |
5466 | events = malloc(sizeof(*events) * (pevent->nr_events + 1)); | |
5467 | if (!events) | |
5468 | return NULL; | |
5469 | ||
5470 | memcpy(events, pevent->events, sizeof(*events) * pevent->nr_events); | |
5471 | events[pevent->nr_events] = NULL; | |
5472 | ||
5473 | pevent->sort_events = events; | |
5474 | ||
5475 | /* the internal events are sorted by id */ | |
5476 | if (sort_type == EVENT_SORT_ID) { | |
5477 | pevent->last_type = sort_type; | |
5478 | return events; | |
5479 | } | |
5480 | } | |
5481 | ||
5482 | switch (sort_type) { | |
5483 | case EVENT_SORT_ID: | |
5484 | sort = events_id_cmp; | |
5485 | break; | |
5486 | case EVENT_SORT_NAME: | |
5487 | sort = events_name_cmp; | |
5488 | break; | |
5489 | case EVENT_SORT_SYSTEM: | |
5490 | sort = events_system_cmp; | |
5491 | break; | |
5492 | default: | |
5493 | return events; | |
5494 | } | |
5495 | ||
5496 | qsort(events, pevent->nr_events, sizeof(*events), sort); | |
5497 | pevent->last_type = sort_type; | |
5498 | ||
5499 | return events; | |
5500 | } | |
5501 | ||
5502 | static struct format_field ** | |
5503 | get_event_fields(const char *type, const char *name, | |
5504 | int count, struct format_field *list) | |
5505 | { | |
5506 | struct format_field **fields; | |
5507 | struct format_field *field; | |
5508 | int i = 0; | |
5509 | ||
a6d2a61a ACM |
5510 | fields = malloc(sizeof(*fields) * (count + 1)); |
5511 | if (!fields) | |
5512 | return NULL; | |
5513 | ||
f7d82350 SR |
5514 | for (field = list; field; field = field->next) { |
5515 | fields[i++] = field; | |
5516 | if (i == count + 1) { | |
5517 | do_warning("event %s has more %s fields than specified", | |
5518 | name, type); | |
5519 | i--; | |
5520 | break; | |
5521 | } | |
5522 | } | |
5523 | ||
5524 | if (i != count) | |
5525 | do_warning("event %s has less %s fields than specified", | |
5526 | name, type); | |
5527 | ||
5528 | fields[i] = NULL; | |
5529 | ||
5530 | return fields; | |
5531 | } | |
5532 | ||
5533 | /** | |
5534 | * pevent_event_common_fields - return a list of common fields for an event | |
5535 | * @event: the event to return the common fields of. | |
5536 | * | |
5537 | * Returns an allocated array of fields. The last item in the array is NULL. | |
5538 | * The array must be freed with free(). | |
5539 | */ | |
5540 | struct format_field **pevent_event_common_fields(struct event_format *event) | |
5541 | { | |
5542 | return get_event_fields("common", event->name, | |
5543 | event->format.nr_common, | |
5544 | event->format.common_fields); | |
5545 | } | |
5546 | ||
5547 | /** | |
5548 | * pevent_event_fields - return a list of event specific fields for an event | |
5549 | * @event: the event to return the fields of. | |
5550 | * | |
5551 | * Returns an allocated array of fields. The last item in the array is NULL. | |
5552 | * The array must be freed with free(). | |
5553 | */ | |
5554 | struct format_field **pevent_event_fields(struct event_format *event) | |
5555 | { | |
5556 | return get_event_fields("event", event->name, | |
5557 | event->format.nr_fields, | |
5558 | event->format.fields); | |
5559 | } | |
5560 | ||
5561 | static void print_fields(struct trace_seq *s, struct print_flag_sym *field) | |
5562 | { | |
5563 | trace_seq_printf(s, "{ %s, %s }", field->value, field->str); | |
5564 | if (field->next) { | |
5565 | trace_seq_puts(s, ", "); | |
5566 | print_fields(s, field->next); | |
5567 | } | |
5568 | } | |
5569 | ||
5570 | /* for debugging */ | |
5571 | static void print_args(struct print_arg *args) | |
5572 | { | |
5573 | int print_paren = 1; | |
5574 | struct trace_seq s; | |
5575 | ||
5576 | switch (args->type) { | |
5577 | case PRINT_NULL: | |
5578 | printf("null"); | |
5579 | break; | |
5580 | case PRINT_ATOM: | |
5581 | printf("%s", args->atom.atom); | |
5582 | break; | |
5583 | case PRINT_FIELD: | |
5584 | printf("REC->%s", args->field.name); | |
5585 | break; | |
5586 | case PRINT_FLAGS: | |
5587 | printf("__print_flags("); | |
5588 | print_args(args->flags.field); | |
5589 | printf(", %s, ", args->flags.delim); | |
5590 | trace_seq_init(&s); | |
5591 | print_fields(&s, args->flags.flags); | |
5592 | trace_seq_do_printf(&s); | |
5593 | trace_seq_destroy(&s); | |
5594 | printf(")"); | |
5595 | break; | |
5596 | case PRINT_SYMBOL: | |
5597 | printf("__print_symbolic("); | |
5598 | print_args(args->symbol.field); | |
5599 | printf(", "); | |
5600 | trace_seq_init(&s); | |
5601 | print_fields(&s, args->symbol.symbols); | |
5602 | trace_seq_do_printf(&s); | |
5603 | trace_seq_destroy(&s); | |
5604 | printf(")"); | |
5605 | break; | |
e080e6f1 NK |
5606 | case PRINT_HEX: |
5607 | printf("__print_hex("); | |
5608 | print_args(args->hex.field); | |
5609 | printf(", "); | |
5610 | print_args(args->hex.size); | |
5611 | printf(")"); | |
5612 | break; | |
b839e1e8 JM |
5613 | case PRINT_INT_ARRAY: |
5614 | printf("__print_array("); | |
5615 | print_args(args->int_array.field); | |
5616 | printf(", "); | |
5617 | print_args(args->int_array.count); | |
5618 | printf(", "); | |
5619 | print_args(args->int_array.el_size); | |
5620 | printf(")"); | |
5621 | break; | |
f7d82350 SR |
5622 | case PRINT_STRING: |
5623 | case PRINT_BSTRING: | |
5624 | printf("__get_str(%s)", args->string.string); | |
5625 | break; | |
473a778a SRRH |
5626 | case PRINT_BITMASK: |
5627 | printf("__get_bitmask(%s)", args->bitmask.bitmask); | |
5628 | break; | |
f7d82350 SR |
5629 | case PRINT_TYPE: |
5630 | printf("(%s)", args->typecast.type); | |
5631 | print_args(args->typecast.item); | |
5632 | break; | |
5633 | case PRINT_OP: | |
5634 | if (strcmp(args->op.op, ":") == 0) | |
5635 | print_paren = 0; | |
5636 | if (print_paren) | |
5637 | printf("("); | |
5638 | print_args(args->op.left); | |
5639 | printf(" %s ", args->op.op); | |
5640 | print_args(args->op.right); | |
5641 | if (print_paren) | |
5642 | printf(")"); | |
5643 | break; | |
5644 | default: | |
5645 | /* we should warn... */ | |
5646 | return; | |
5647 | } | |
5648 | if (args->next) { | |
5649 | printf("\n"); | |
5650 | print_args(args->next); | |
5651 | } | |
5652 | } | |
5653 | ||
5654 | static void parse_header_field(const char *field, | |
5655 | int *offset, int *size, int mandatory) | |
5656 | { | |
5657 | unsigned long long save_input_buf_ptr; | |
5658 | unsigned long long save_input_buf_siz; | |
5659 | char *token; | |
5660 | int type; | |
5661 | ||
5662 | save_input_buf_ptr = input_buf_ptr; | |
5663 | save_input_buf_siz = input_buf_siz; | |
5664 | ||
5665 | if (read_expected(EVENT_ITEM, "field") < 0) | |
5666 | return; | |
5667 | if (read_expected(EVENT_OP, ":") < 0) | |
5668 | return; | |
5669 | ||
5670 | /* type */ | |
5671 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
5672 | goto fail; | |
5673 | free_token(token); | |
5674 | ||
5675 | /* | |
5676 | * If this is not a mandatory field, then test it first. | |
5677 | */ | |
5678 | if (mandatory) { | |
5679 | if (read_expected(EVENT_ITEM, field) < 0) | |
5680 | return; | |
5681 | } else { | |
5682 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
5683 | goto fail; | |
5684 | if (strcmp(token, field) != 0) | |
5685 | goto discard; | |
5686 | free_token(token); | |
5687 | } | |
5688 | ||
5689 | if (read_expected(EVENT_OP, ";") < 0) | |
5690 | return; | |
5691 | if (read_expected(EVENT_ITEM, "offset") < 0) | |
5692 | return; | |
5693 | if (read_expected(EVENT_OP, ":") < 0) | |
5694 | return; | |
5695 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
5696 | goto fail; | |
5697 | *offset = atoi(token); | |
5698 | free_token(token); | |
5699 | if (read_expected(EVENT_OP, ";") < 0) | |
5700 | return; | |
5701 | if (read_expected(EVENT_ITEM, "size") < 0) | |
5702 | return; | |
5703 | if (read_expected(EVENT_OP, ":") < 0) | |
5704 | return; | |
5705 | if (read_expect_type(EVENT_ITEM, &token) < 0) | |
5706 | goto fail; | |
5707 | *size = atoi(token); | |
5708 | free_token(token); | |
5709 | if (read_expected(EVENT_OP, ";") < 0) | |
5710 | return; | |
5711 | type = read_token(&token); | |
5712 | if (type != EVENT_NEWLINE) { | |
5713 | /* newer versions of the kernel have a "signed" type */ | |
5714 | if (type != EVENT_ITEM) | |
5715 | goto fail; | |
5716 | ||
5717 | if (strcmp(token, "signed") != 0) | |
5718 | goto fail; | |
5719 | ||
5720 | free_token(token); | |
5721 | ||
5722 | if (read_expected(EVENT_OP, ":") < 0) | |
5723 | return; | |
5724 | ||
5725 | if (read_expect_type(EVENT_ITEM, &token)) | |
5726 | goto fail; | |
5727 | ||
5728 | free_token(token); | |
5729 | if (read_expected(EVENT_OP, ";") < 0) | |
5730 | return; | |
5731 | ||
5732 | if (read_expect_type(EVENT_NEWLINE, &token)) | |
5733 | goto fail; | |
5734 | } | |
5735 | fail: | |
5736 | free_token(token); | |
5737 | return; | |
5738 | ||
5739 | discard: | |
5740 | input_buf_ptr = save_input_buf_ptr; | |
5741 | input_buf_siz = save_input_buf_siz; | |
5742 | *offset = 0; | |
5743 | *size = 0; | |
5744 | free_token(token); | |
5745 | } | |
5746 | ||
5747 | /** | |
5748 | * pevent_parse_header_page - parse the data stored in the header page | |
5749 | * @pevent: the handle to the pevent | |
5750 | * @buf: the buffer storing the header page format string | |
5751 | * @size: the size of @buf | |
5752 | * @long_size: the long size to use if there is no header | |
5753 | * | |
5754 | * This parses the header page format for information on the | |
5755 | * ring buffer used. The @buf should be copied from | |
5756 | * | |
5757 | * /sys/kernel/debug/tracing/events/header_page | |
5758 | */ | |
5759 | int pevent_parse_header_page(struct pevent *pevent, char *buf, unsigned long size, | |
5760 | int long_size) | |
5761 | { | |
5762 | int ignore; | |
5763 | ||
5764 | if (!size) { | |
5765 | /* | |
5766 | * Old kernels did not have header page info. | |
5767 | * Sorry but we just use what we find here in user space. | |
5768 | */ | |
5769 | pevent->header_page_ts_size = sizeof(long long); | |
5770 | pevent->header_page_size_size = long_size; | |
5771 | pevent->header_page_data_offset = sizeof(long long) + long_size; | |
5772 | pevent->old_format = 1; | |
5773 | return -1; | |
5774 | } | |
5775 | init_input_buf(buf, size); | |
5776 | ||
5777 | parse_header_field("timestamp", &pevent->header_page_ts_offset, | |
5778 | &pevent->header_page_ts_size, 1); | |
5779 | parse_header_field("commit", &pevent->header_page_size_offset, | |
5780 | &pevent->header_page_size_size, 1); | |
5781 | parse_header_field("overwrite", &pevent->header_page_overwrite, | |
5782 | &ignore, 0); | |
5783 | parse_header_field("data", &pevent->header_page_data_offset, | |
5784 | &pevent->header_page_data_size, 1); | |
5785 | ||
5786 | return 0; | |
5787 | } | |
5788 | ||
5789 | static int event_matches(struct event_format *event, | |
5790 | int id, const char *sys_name, | |
5791 | const char *event_name) | |
5792 | { | |
5793 | if (id >= 0 && id != event->id) | |
5794 | return 0; | |
5795 | ||
5796 | if (event_name && (strcmp(event_name, event->name) != 0)) | |
5797 | return 0; | |
5798 | ||
5799 | if (sys_name && (strcmp(sys_name, event->system) != 0)) | |
5800 | return 0; | |
5801 | ||
5802 | return 1; | |
5803 | } | |
5804 | ||
5805 | static void free_handler(struct event_handler *handle) | |
5806 | { | |
5807 | free((void *)handle->sys_name); | |
5808 | free((void *)handle->event_name); | |
5809 | free(handle); | |
5810 | } | |
5811 | ||
5812 | static int find_event_handle(struct pevent *pevent, struct event_format *event) | |
5813 | { | |
5814 | struct event_handler *handle, **next; | |
5815 | ||
5816 | for (next = &pevent->handlers; *next; | |
5817 | next = &(*next)->next) { | |
5818 | handle = *next; | |
5819 | if (event_matches(event, handle->id, | |
5820 | handle->sys_name, | |
5821 | handle->event_name)) | |
5822 | break; | |
5823 | } | |
5824 | ||
5825 | if (!(*next)) | |
5826 | return 0; | |
5827 | ||
5828 | pr_stat("overriding event (%d) %s:%s with new print handler", | |
5829 | event->id, event->system, event->name); | |
5830 | ||
5831 | event->handler = handle->func; | |
5832 | event->context = handle->context; | |
5833 | ||
5834 | *next = handle->next; | |
5835 | free_handler(handle); | |
5836 | ||
5837 | return 1; | |
5838 | } | |
5839 | ||
5840 | /** | |
2b29175d | 5841 | * __pevent_parse_format - parse the event format |
f7d82350 SR |
5842 | * @buf: the buffer storing the event format string |
5843 | * @size: the size of @buf | |
5844 | * @sys: the system the event belongs to | |
5845 | * | |
5846 | * This parses the event format and creates an event structure | |
5847 | * to quickly parse raw data for a given event. | |
5848 | * | |
5849 | * These files currently come from: | |
5850 | * | |
5851 | * /sys/kernel/debug/tracing/events/.../.../format | |
5852 | */ | |
2b29175d ACM |
5853 | enum pevent_errno __pevent_parse_format(struct event_format **eventp, |
5854 | struct pevent *pevent, const char *buf, | |
5855 | unsigned long size, const char *sys) | |
f7d82350 SR |
5856 | { |
5857 | struct event_format *event; | |
5858 | int ret; | |
5859 | ||
5860 | init_input_buf(buf, size); | |
5861 | ||
2b29175d | 5862 | *eventp = event = alloc_event(); |
f7d82350 | 5863 | if (!event) |
bffddffd | 5864 | return PEVENT_ERRNO__MEM_ALLOC_FAILED; |
f7d82350 SR |
5865 | |
5866 | event->name = event_read_name(); | |
5867 | if (!event->name) { | |
5868 | /* Bad event? */ | |
bffddffd NK |
5869 | ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; |
5870 | goto event_alloc_failed; | |
f7d82350 SR |
5871 | } |
5872 | ||
5873 | if (strcmp(sys, "ftrace") == 0) { | |
f7d82350 SR |
5874 | event->flags |= EVENT_FL_ISFTRACE; |
5875 | ||
5876 | if (strcmp(event->name, "bprint") == 0) | |
5877 | event->flags |= EVENT_FL_ISBPRINT; | |
5878 | } | |
5879 | ||
5880 | event->id = event_read_id(); | |
bffddffd NK |
5881 | if (event->id < 0) { |
5882 | ret = PEVENT_ERRNO__READ_ID_FAILED; | |
5883 | /* | |
5884 | * This isn't an allocation error actually. | |
5885 | * But as the ID is critical, just bail out. | |
5886 | */ | |
5887 | goto event_alloc_failed; | |
5888 | } | |
f7d82350 SR |
5889 | |
5890 | event->system = strdup(sys); | |
bffddffd NK |
5891 | if (!event->system) { |
5892 | ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
5893 | goto event_alloc_failed; | |
5894 | } | |
f7d82350 | 5895 | |
101782ea SR |
5896 | /* Add pevent to event so that it can be referenced */ |
5897 | event->pevent = pevent; | |
5898 | ||
f7d82350 SR |
5899 | ret = event_read_format(event); |
5900 | if (ret < 0) { | |
bffddffd NK |
5901 | ret = PEVENT_ERRNO__READ_FORMAT_FAILED; |
5902 | goto event_parse_failed; | |
f7d82350 SR |
5903 | } |
5904 | ||
5905 | /* | |
5906 | * If the event has an override, don't print warnings if the event | |
5907 | * print format fails to parse. | |
5908 | */ | |
2b29175d | 5909 | if (pevent && find_event_handle(pevent, event)) |
f7d82350 SR |
5910 | show_warning = 0; |
5911 | ||
5912 | ret = event_read_print(event); | |
2b29175d ACM |
5913 | show_warning = 1; |
5914 | ||
f7d82350 | 5915 | if (ret < 0) { |
bffddffd NK |
5916 | ret = PEVENT_ERRNO__READ_PRINT_FAILED; |
5917 | goto event_parse_failed; | |
f7d82350 | 5918 | } |
f7d82350 SR |
5919 | |
5920 | if (!ret && (event->flags & EVENT_FL_ISFTRACE)) { | |
5921 | struct format_field *field; | |
5922 | struct print_arg *arg, **list; | |
5923 | ||
5924 | /* old ftrace had no args */ | |
f7d82350 SR |
5925 | list = &event->print_fmt.args; |
5926 | for (field = event->format.fields; field; field = field->next) { | |
5927 | arg = alloc_arg(); | |
b1ac754b NK |
5928 | if (!arg) { |
5929 | event->flags |= EVENT_FL_FAILED; | |
5930 | return PEVENT_ERRNO__OLD_FTRACE_ARG_FAILED; | |
5931 | } | |
f7d82350 SR |
5932 | arg->type = PRINT_FIELD; |
5933 | arg->field.name = strdup(field->name); | |
ca63858e | 5934 | if (!arg->field.name) { |
4b5632bc | 5935 | event->flags |= EVENT_FL_FAILED; |
fd34f0b2 | 5936 | free_arg(arg); |
bffddffd | 5937 | return PEVENT_ERRNO__OLD_FTRACE_ARG_FAILED; |
ca63858e | 5938 | } |
f7d82350 | 5939 | arg->field.field = field; |
fd34f0b2 NK |
5940 | *list = arg; |
5941 | list = &arg->next; | |
f7d82350 SR |
5942 | } |
5943 | return 0; | |
5944 | } | |
5945 | ||
f7d82350 SR |
5946 | return 0; |
5947 | ||
bffddffd | 5948 | event_parse_failed: |
f7d82350 | 5949 | event->flags |= EVENT_FL_FAILED; |
bffddffd NK |
5950 | return ret; |
5951 | ||
5952 | event_alloc_failed: | |
2b29175d ACM |
5953 | free(event->system); |
5954 | free(event->name); | |
5955 | free(event); | |
5956 | *eventp = NULL; | |
5957 | return ret; | |
5958 | } | |
5959 | ||
71ad9583 JO |
5960 | static enum pevent_errno |
5961 | __pevent_parse_event(struct pevent *pevent, | |
5962 | struct event_format **eventp, | |
5963 | const char *buf, unsigned long size, | |
5964 | const char *sys) | |
5965 | { | |
5966 | int ret = __pevent_parse_format(eventp, pevent, buf, size, sys); | |
5967 | struct event_format *event = *eventp; | |
5968 | ||
5969 | if (event == NULL) | |
5970 | return ret; | |
5971 | ||
5972 | if (pevent && add_event(pevent, event)) { | |
5973 | ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
5974 | goto event_add_failed; | |
5975 | } | |
5976 | ||
5977 | #define PRINT_ARGS 0 | |
5978 | if (PRINT_ARGS && event->print_fmt.args) | |
5979 | print_args(event->print_fmt.args); | |
5980 | ||
5981 | return 0; | |
5982 | ||
5983 | event_add_failed: | |
5984 | pevent_free_format(event); | |
5985 | return ret; | |
5986 | } | |
5987 | ||
2b29175d ACM |
5988 | /** |
5989 | * pevent_parse_format - parse the event format | |
71ad9583 JO |
5990 | * @pevent: the handle to the pevent |
5991 | * @eventp: returned format | |
2b29175d ACM |
5992 | * @buf: the buffer storing the event format string |
5993 | * @size: the size of @buf | |
5994 | * @sys: the system the event belongs to | |
5995 | * | |
5996 | * This parses the event format and creates an event structure | |
5997 | * to quickly parse raw data for a given event. | |
5998 | * | |
5999 | * These files currently come from: | |
6000 | * | |
6001 | * /sys/kernel/debug/tracing/events/.../.../format | |
6002 | */ | |
71ad9583 JO |
6003 | enum pevent_errno pevent_parse_format(struct pevent *pevent, |
6004 | struct event_format **eventp, | |
6005 | const char *buf, | |
2b29175d ACM |
6006 | unsigned long size, const char *sys) |
6007 | { | |
71ad9583 | 6008 | return __pevent_parse_event(pevent, eventp, buf, size, sys); |
2b29175d ACM |
6009 | } |
6010 | ||
6011 | /** | |
6012 | * pevent_parse_event - parse the event format | |
6013 | * @pevent: the handle to the pevent | |
6014 | * @buf: the buffer storing the event format string | |
6015 | * @size: the size of @buf | |
6016 | * @sys: the system the event belongs to | |
6017 | * | |
6018 | * This parses the event format and creates an event structure | |
6019 | * to quickly parse raw data for a given event. | |
6020 | * | |
6021 | * These files currently come from: | |
6022 | * | |
6023 | * /sys/kernel/debug/tracing/events/.../.../format | |
6024 | */ | |
6025 | enum pevent_errno pevent_parse_event(struct pevent *pevent, const char *buf, | |
6026 | unsigned long size, const char *sys) | |
6027 | { | |
6028 | struct event_format *event = NULL; | |
71ad9583 | 6029 | return __pevent_parse_event(pevent, &event, buf, size, sys); |
f7d82350 SR |
6030 | } |
6031 | ||
2f197b9d NK |
6032 | #undef _PE |
6033 | #define _PE(code, str) str | |
6034 | static const char * const pevent_error_str[] = { | |
6035 | PEVENT_ERRORS | |
6036 | }; | |
6037 | #undef _PE | |
6038 | ||
ca383a4d ACM |
6039 | int pevent_strerror(struct pevent *pevent __maybe_unused, |
6040 | enum pevent_errno errnum, char *buf, size_t buflen) | |
2f197b9d NK |
6041 | { |
6042 | int idx; | |
6043 | const char *msg; | |
6044 | ||
6045 | if (errnum >= 0) { | |
e1aa7c30 NK |
6046 | msg = strerror_r(errnum, buf, buflen); |
6047 | if (msg != buf) { | |
6048 | size_t len = strlen(msg); | |
9612ef67 IT |
6049 | memcpy(buf, msg, min(buflen - 1, len)); |
6050 | *(buf + min(buflen - 1, len)) = '\0'; | |
e1aa7c30 | 6051 | } |
2f197b9d NK |
6052 | return 0; |
6053 | } | |
6054 | ||
6055 | if (errnum <= __PEVENT_ERRNO__START || | |
6056 | errnum >= __PEVENT_ERRNO__END) | |
6057 | return -1; | |
6058 | ||
f63fe79f | 6059 | idx = errnum - __PEVENT_ERRNO__START - 1; |
2f197b9d | 6060 | msg = pevent_error_str[idx]; |
bf19b82e | 6061 | snprintf(buf, buflen, "%s", msg); |
2f197b9d NK |
6062 | |
6063 | return 0; | |
6064 | } | |
6065 | ||
f7d82350 | 6066 | int get_field_val(struct trace_seq *s, struct format_field *field, |
1c698186 | 6067 | const char *name, struct pevent_record *record, |
f7d82350 SR |
6068 | unsigned long long *val, int err) |
6069 | { | |
6070 | if (!field) { | |
6071 | if (err) | |
6072 | trace_seq_printf(s, "<CANT FIND FIELD %s>", name); | |
6073 | return -1; | |
6074 | } | |
6075 | ||
6076 | if (pevent_read_number_field(field, record->data, val)) { | |
6077 | if (err) | |
6078 | trace_seq_printf(s, " %s=INVALID", name); | |
6079 | return -1; | |
6080 | } | |
6081 | ||
6082 | return 0; | |
6083 | } | |
6084 | ||
6085 | /** | |
6086 | * pevent_get_field_raw - return the raw pointer into the data field | |
6087 | * @s: The seq to print to on error | |
6088 | * @event: the event that the field is for | |
6089 | * @name: The name of the field | |
6090 | * @record: The record with the field name. | |
6091 | * @len: place to store the field length. | |
6092 | * @err: print default error if failed. | |
6093 | * | |
6094 | * Returns a pointer into record->data of the field and places | |
6095 | * the length of the field in @len. | |
6096 | * | |
6097 | * On failure, it returns NULL. | |
6098 | */ | |
6099 | void *pevent_get_field_raw(struct trace_seq *s, struct event_format *event, | |
1c698186 | 6100 | const char *name, struct pevent_record *record, |
f7d82350 SR |
6101 | int *len, int err) |
6102 | { | |
6103 | struct format_field *field; | |
6104 | void *data = record->data; | |
6105 | unsigned offset; | |
6106 | int dummy; | |
6107 | ||
6108 | if (!event) | |
6109 | return NULL; | |
6110 | ||
6111 | field = pevent_find_field(event, name); | |
6112 | ||
6113 | if (!field) { | |
6114 | if (err) | |
6115 | trace_seq_printf(s, "<CANT FIND FIELD %s>", name); | |
6116 | return NULL; | |
6117 | } | |
6118 | ||
6119 | /* Allow @len to be NULL */ | |
6120 | if (!len) | |
6121 | len = &dummy; | |
6122 | ||
6123 | offset = field->offset; | |
6124 | if (field->flags & FIELD_IS_DYNAMIC) { | |
6125 | offset = pevent_read_number(event->pevent, | |
6126 | data + offset, field->size); | |
6127 | *len = offset >> 16; | |
6128 | offset &= 0xffff; | |
6129 | } else | |
6130 | *len = field->size; | |
6131 | ||
6132 | return data + offset; | |
6133 | } | |
6134 | ||
6135 | /** | |
6136 | * pevent_get_field_val - find a field and return its value | |
6137 | * @s: The seq to print to on error | |
6138 | * @event: the event that the field is for | |
6139 | * @name: The name of the field | |
6140 | * @record: The record with the field name. | |
6141 | * @val: place to store the value of the field. | |
6142 | * @err: print default error if failed. | |
6143 | * | |
6144 | * Returns 0 on success -1 on field not found. | |
6145 | */ | |
6146 | int pevent_get_field_val(struct trace_seq *s, struct event_format *event, | |
1c698186 | 6147 | const char *name, struct pevent_record *record, |
f7d82350 SR |
6148 | unsigned long long *val, int err) |
6149 | { | |
6150 | struct format_field *field; | |
6151 | ||
6152 | if (!event) | |
6153 | return -1; | |
6154 | ||
6155 | field = pevent_find_field(event, name); | |
6156 | ||
6157 | return get_field_val(s, field, name, record, val, err); | |
6158 | } | |
6159 | ||
6160 | /** | |
6161 | * pevent_get_common_field_val - find a common field and return its value | |
6162 | * @s: The seq to print to on error | |
6163 | * @event: the event that the field is for | |
6164 | * @name: The name of the field | |
6165 | * @record: The record with the field name. | |
6166 | * @val: place to store the value of the field. | |
6167 | * @err: print default error if failed. | |
6168 | * | |
6169 | * Returns 0 on success -1 on field not found. | |
6170 | */ | |
6171 | int pevent_get_common_field_val(struct trace_seq *s, struct event_format *event, | |
1c698186 | 6172 | const char *name, struct pevent_record *record, |
f7d82350 SR |
6173 | unsigned long long *val, int err) |
6174 | { | |
6175 | struct format_field *field; | |
6176 | ||
6177 | if (!event) | |
6178 | return -1; | |
6179 | ||
6180 | field = pevent_find_common_field(event, name); | |
6181 | ||
6182 | return get_field_val(s, field, name, record, val, err); | |
6183 | } | |
6184 | ||
6185 | /** | |
6186 | * pevent_get_any_field_val - find a any field and return its value | |
6187 | * @s: The seq to print to on error | |
6188 | * @event: the event that the field is for | |
6189 | * @name: The name of the field | |
6190 | * @record: The record with the field name. | |
6191 | * @val: place to store the value of the field. | |
6192 | * @err: print default error if failed. | |
6193 | * | |
6194 | * Returns 0 on success -1 on field not found. | |
6195 | */ | |
6196 | int pevent_get_any_field_val(struct trace_seq *s, struct event_format *event, | |
1c698186 | 6197 | const char *name, struct pevent_record *record, |
f7d82350 SR |
6198 | unsigned long long *val, int err) |
6199 | { | |
6200 | struct format_field *field; | |
6201 | ||
6202 | if (!event) | |
6203 | return -1; | |
6204 | ||
6205 | field = pevent_find_any_field(event, name); | |
6206 | ||
6207 | return get_field_val(s, field, name, record, val, err); | |
6208 | } | |
6209 | ||
6210 | /** | |
6211 | * pevent_print_num_field - print a field and a format | |
6212 | * @s: The seq to print to | |
6213 | * @fmt: The printf format to print the field with. | |
6214 | * @event: the event that the field is for | |
6215 | * @name: The name of the field | |
6216 | * @record: The record with the field name. | |
6217 | * @err: print default error if failed. | |
6218 | * | |
16e6b8fd | 6219 | * Returns: 0 on success, -1 field not found, or 1 if buffer is full. |
f7d82350 SR |
6220 | */ |
6221 | int pevent_print_num_field(struct trace_seq *s, const char *fmt, | |
6222 | struct event_format *event, const char *name, | |
1c698186 | 6223 | struct pevent_record *record, int err) |
f7d82350 SR |
6224 | { |
6225 | struct format_field *field = pevent_find_field(event, name); | |
6226 | unsigned long long val; | |
6227 | ||
6228 | if (!field) | |
6229 | goto failed; | |
6230 | ||
6231 | if (pevent_read_number_field(field, record->data, &val)) | |
6232 | goto failed; | |
6233 | ||
6234 | return trace_seq_printf(s, fmt, val); | |
6235 | ||
6236 | failed: | |
6237 | if (err) | |
6238 | trace_seq_printf(s, "CAN'T FIND FIELD \"%s\"", name); | |
6239 | return -1; | |
6240 | } | |
6241 | ||
6d862b8c SR |
6242 | /** |
6243 | * pevent_print_func_field - print a field and a format for function pointers | |
6244 | * @s: The seq to print to | |
6245 | * @fmt: The printf format to print the field with. | |
6246 | * @event: the event that the field is for | |
6247 | * @name: The name of the field | |
6248 | * @record: The record with the field name. | |
6249 | * @err: print default error if failed. | |
6250 | * | |
6251 | * Returns: 0 on success, -1 field not found, or 1 if buffer is full. | |
6252 | */ | |
6253 | int pevent_print_func_field(struct trace_seq *s, const char *fmt, | |
6254 | struct event_format *event, const char *name, | |
6255 | struct pevent_record *record, int err) | |
6256 | { | |
6257 | struct format_field *field = pevent_find_field(event, name); | |
6258 | struct pevent *pevent = event->pevent; | |
6259 | unsigned long long val; | |
6260 | struct func_map *func; | |
6261 | char tmp[128]; | |
6262 | ||
6263 | if (!field) | |
6264 | goto failed; | |
6265 | ||
6266 | if (pevent_read_number_field(field, record->data, &val)) | |
6267 | goto failed; | |
6268 | ||
6269 | func = find_func(pevent, val); | |
6270 | ||
6271 | if (func) | |
6272 | snprintf(tmp, 128, "%s/0x%llx", func->func, func->addr - val); | |
6273 | else | |
6274 | sprintf(tmp, "0x%08llx", val); | |
6275 | ||
6276 | return trace_seq_printf(s, fmt, tmp); | |
6277 | ||
6278 | failed: | |
6279 | if (err) | |
6280 | trace_seq_printf(s, "CAN'T FIND FIELD \"%s\"", name); | |
6281 | return -1; | |
6282 | } | |
6283 | ||
f7d82350 SR |
6284 | static void free_func_handle(struct pevent_function_handler *func) |
6285 | { | |
6286 | struct pevent_func_params *params; | |
6287 | ||
6288 | free(func->name); | |
6289 | ||
6290 | while (func->params) { | |
6291 | params = func->params; | |
6292 | func->params = params->next; | |
6293 | free(params); | |
6294 | } | |
6295 | ||
6296 | free(func); | |
6297 | } | |
6298 | ||
6299 | /** | |
6300 | * pevent_register_print_function - register a helper function | |
6301 | * @pevent: the handle to the pevent | |
6302 | * @func: the function to process the helper function | |
16e6b8fd | 6303 | * @ret_type: the return type of the helper function |
f7d82350 SR |
6304 | * @name: the name of the helper function |
6305 | * @parameters: A list of enum pevent_func_arg_type | |
6306 | * | |
6307 | * Some events may have helper functions in the print format arguments. | |
16e6b8fd | 6308 | * This allows a plugin to dynamically create a way to process one |
f7d82350 SR |
6309 | * of these functions. |
6310 | * | |
6311 | * The @parameters is a variable list of pevent_func_arg_type enums that | |
6312 | * must end with PEVENT_FUNC_ARG_VOID. | |
6313 | */ | |
6314 | int pevent_register_print_function(struct pevent *pevent, | |
6315 | pevent_func_handler func, | |
6316 | enum pevent_func_arg_type ret_type, | |
6317 | char *name, ...) | |
6318 | { | |
6319 | struct pevent_function_handler *func_handle; | |
6320 | struct pevent_func_params **next_param; | |
6321 | struct pevent_func_params *param; | |
6322 | enum pevent_func_arg_type type; | |
6323 | va_list ap; | |
67ed939c | 6324 | int ret; |
f7d82350 SR |
6325 | |
6326 | func_handle = find_func_handler(pevent, name); | |
6327 | if (func_handle) { | |
6328 | /* | |
6329 | * This is most like caused by the users own | |
6330 | * plugins updating the function. This overrides the | |
6331 | * system defaults. | |
6332 | */ | |
6333 | pr_stat("override of function helper '%s'", name); | |
6334 | remove_func_handler(pevent, name); | |
6335 | } | |
6336 | ||
87162d81 | 6337 | func_handle = calloc(1, sizeof(*func_handle)); |
67ed939c NK |
6338 | if (!func_handle) { |
6339 | do_warning("Failed to allocate function handler"); | |
6340 | return PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
6341 | } | |
f7d82350 SR |
6342 | |
6343 | func_handle->ret_type = ret_type; | |
6344 | func_handle->name = strdup(name); | |
6345 | func_handle->func = func; | |
67ed939c NK |
6346 | if (!func_handle->name) { |
6347 | do_warning("Failed to allocate function name"); | |
6348 | free(func_handle); | |
6349 | return PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
6350 | } | |
f7d82350 SR |
6351 | |
6352 | next_param = &(func_handle->params); | |
6353 | va_start(ap, name); | |
6354 | for (;;) { | |
6355 | type = va_arg(ap, enum pevent_func_arg_type); | |
6356 | if (type == PEVENT_FUNC_ARG_VOID) | |
6357 | break; | |
6358 | ||
e46466b8 | 6359 | if (type >= PEVENT_FUNC_ARG_MAX_TYPES) { |
67ed939c NK |
6360 | do_warning("Invalid argument type %d", type); |
6361 | ret = PEVENT_ERRNO__INVALID_ARG_TYPE; | |
f7d82350 SR |
6362 | goto out_free; |
6363 | } | |
6364 | ||
67ed939c NK |
6365 | param = malloc(sizeof(*param)); |
6366 | if (!param) { | |
6367 | do_warning("Failed to allocate function param"); | |
6368 | ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
6369 | goto out_free; | |
6370 | } | |
f7d82350 SR |
6371 | param->type = type; |
6372 | param->next = NULL; | |
6373 | ||
6374 | *next_param = param; | |
6375 | next_param = &(param->next); | |
6376 | ||
6377 | func_handle->nr_args++; | |
6378 | } | |
6379 | va_end(ap); | |
6380 | ||
6381 | func_handle->next = pevent->func_handlers; | |
6382 | pevent->func_handlers = func_handle; | |
6383 | ||
6384 | return 0; | |
6385 | out_free: | |
6386 | va_end(ap); | |
6387 | free_func_handle(func_handle); | |
67ed939c | 6388 | return ret; |
f7d82350 SR |
6389 | } |
6390 | ||
20c7e5ab NK |
6391 | /** |
6392 | * pevent_unregister_print_function - unregister a helper function | |
6393 | * @pevent: the handle to the pevent | |
6394 | * @func: the function to process the helper function | |
6395 | * @name: the name of the helper function | |
6396 | * | |
6397 | * This function removes existing print handler for function @name. | |
6398 | * | |
6399 | * Returns 0 if the handler was removed successully, -1 otherwise. | |
6400 | */ | |
6401 | int pevent_unregister_print_function(struct pevent *pevent, | |
6402 | pevent_func_handler func, char *name) | |
6403 | { | |
6404 | struct pevent_function_handler *func_handle; | |
6405 | ||
6406 | func_handle = find_func_handler(pevent, name); | |
6407 | if (func_handle && func_handle->func == func) { | |
6408 | remove_func_handler(pevent, name); | |
6409 | return 0; | |
6410 | } | |
6411 | return -1; | |
6412 | } | |
6413 | ||
ad13701d NK |
6414 | static struct event_format *pevent_search_event(struct pevent *pevent, int id, |
6415 | const char *sys_name, | |
6416 | const char *event_name) | |
6417 | { | |
6418 | struct event_format *event; | |
6419 | ||
6420 | if (id >= 0) { | |
6421 | /* search by id */ | |
6422 | event = pevent_find_event(pevent, id); | |
6423 | if (!event) | |
6424 | return NULL; | |
6425 | if (event_name && (strcmp(event_name, event->name) != 0)) | |
6426 | return NULL; | |
6427 | if (sys_name && (strcmp(sys_name, event->system) != 0)) | |
6428 | return NULL; | |
6429 | } else { | |
6430 | event = pevent_find_event_by_name(pevent, sys_name, event_name); | |
6431 | if (!event) | |
6432 | return NULL; | |
6433 | } | |
6434 | return event; | |
6435 | } | |
6436 | ||
f7d82350 | 6437 | /** |
16e6b8fd | 6438 | * pevent_register_event_handler - register a way to parse an event |
f7d82350 SR |
6439 | * @pevent: the handle to the pevent |
6440 | * @id: the id of the event to register | |
6441 | * @sys_name: the system name the event belongs to | |
6442 | * @event_name: the name of the event | |
6443 | * @func: the function to call to parse the event information | |
16e6b8fd | 6444 | * @context: the data to be passed to @func |
f7d82350 SR |
6445 | * |
6446 | * This function allows a developer to override the parsing of | |
6447 | * a given event. If for some reason the default print format | |
6448 | * is not sufficient, this function will register a function | |
6449 | * for an event to be used to parse the data instead. | |
6450 | * | |
6451 | * If @id is >= 0, then it is used to find the event. | |
6452 | * else @sys_name and @event_name are used. | |
6453 | */ | |
79d5adf0 NK |
6454 | int pevent_register_event_handler(struct pevent *pevent, int id, |
6455 | const char *sys_name, const char *event_name, | |
6456 | pevent_event_handler_func func, void *context) | |
f7d82350 SR |
6457 | { |
6458 | struct event_format *event; | |
6459 | struct event_handler *handle; | |
6460 | ||
ad13701d NK |
6461 | event = pevent_search_event(pevent, id, sys_name, event_name); |
6462 | if (event == NULL) | |
6463 | goto not_found; | |
f7d82350 SR |
6464 | |
6465 | pr_stat("overriding event (%d) %s:%s with new print handler", | |
6466 | event->id, event->system, event->name); | |
6467 | ||
6468 | event->handler = func; | |
6469 | event->context = context; | |
6470 | return 0; | |
6471 | ||
6472 | not_found: | |
6473 | /* Save for later use. */ | |
87162d81 | 6474 | handle = calloc(1, sizeof(*handle)); |
0ca8da00 NK |
6475 | if (!handle) { |
6476 | do_warning("Failed to allocate event handler"); | |
6477 | return PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
6478 | } | |
6479 | ||
f7d82350 SR |
6480 | handle->id = id; |
6481 | if (event_name) | |
6482 | handle->event_name = strdup(event_name); | |
6483 | if (sys_name) | |
6484 | handle->sys_name = strdup(sys_name); | |
6485 | ||
ca63858e NK |
6486 | if ((event_name && !handle->event_name) || |
6487 | (sys_name && !handle->sys_name)) { | |
0ca8da00 NK |
6488 | do_warning("Failed to allocate event/sys name"); |
6489 | free((void *)handle->event_name); | |
6490 | free((void *)handle->sys_name); | |
6491 | free(handle); | |
6492 | return PEVENT_ERRNO__MEM_ALLOC_FAILED; | |
ca63858e NK |
6493 | } |
6494 | ||
f7d82350 SR |
6495 | handle->func = func; |
6496 | handle->next = pevent->handlers; | |
6497 | pevent->handlers = handle; | |
6498 | handle->context = context; | |
6499 | ||
6500 | return -1; | |
6501 | } | |
6502 | ||
ad13701d NK |
6503 | static int handle_matches(struct event_handler *handler, int id, |
6504 | const char *sys_name, const char *event_name, | |
6505 | pevent_event_handler_func func, void *context) | |
6506 | { | |
6507 | if (id >= 0 && id != handler->id) | |
6508 | return 0; | |
6509 | ||
6510 | if (event_name && (strcmp(event_name, handler->event_name) != 0)) | |
6511 | return 0; | |
6512 | ||
6513 | if (sys_name && (strcmp(sys_name, handler->sys_name) != 0)) | |
6514 | return 0; | |
6515 | ||
6516 | if (func != handler->func || context != handler->context) | |
6517 | return 0; | |
6518 | ||
6519 | return 1; | |
6520 | } | |
6521 | ||
6522 | /** | |
6523 | * pevent_unregister_event_handler - unregister an existing event handler | |
6524 | * @pevent: the handle to the pevent | |
6525 | * @id: the id of the event to unregister | |
6526 | * @sys_name: the system name the handler belongs to | |
6527 | * @event_name: the name of the event handler | |
6528 | * @func: the function to call to parse the event information | |
6529 | * @context: the data to be passed to @func | |
6530 | * | |
6531 | * This function removes existing event handler (parser). | |
6532 | * | |
6533 | * If @id is >= 0, then it is used to find the event. | |
6534 | * else @sys_name and @event_name are used. | |
6535 | * | |
6536 | * Returns 0 if handler was removed successfully, -1 if event was not found. | |
6537 | */ | |
6538 | int pevent_unregister_event_handler(struct pevent *pevent, int id, | |
6539 | const char *sys_name, const char *event_name, | |
6540 | pevent_event_handler_func func, void *context) | |
6541 | { | |
6542 | struct event_format *event; | |
6543 | struct event_handler *handle; | |
6544 | struct event_handler **next; | |
6545 | ||
6546 | event = pevent_search_event(pevent, id, sys_name, event_name); | |
6547 | if (event == NULL) | |
6548 | goto not_found; | |
6549 | ||
6550 | if (event->handler == func && event->context == context) { | |
6551 | pr_stat("removing override handler for event (%d) %s:%s. Going back to default handler.", | |
6552 | event->id, event->system, event->name); | |
6553 | ||
6554 | event->handler = NULL; | |
6555 | event->context = NULL; | |
6556 | return 0; | |
6557 | } | |
6558 | ||
6559 | not_found: | |
6560 | for (next = &pevent->handlers; *next; next = &(*next)->next) { | |
6561 | handle = *next; | |
6562 | if (handle_matches(handle, id, sys_name, event_name, | |
6563 | func, context)) | |
6564 | break; | |
6565 | } | |
6566 | ||
6567 | if (!(*next)) | |
6568 | return -1; | |
6569 | ||
6570 | *next = handle->next; | |
6571 | free_handler(handle); | |
6572 | ||
6573 | return 0; | |
6574 | } | |
6575 | ||
f7d82350 SR |
6576 | /** |
6577 | * pevent_alloc - create a pevent handle | |
6578 | */ | |
6579 | struct pevent *pevent_alloc(void) | |
6580 | { | |
87162d81 | 6581 | struct pevent *pevent = calloc(1, sizeof(*pevent)); |
f7d82350 | 6582 | |
87162d81 ACM |
6583 | if (pevent) |
6584 | pevent->ref_count = 1; | |
f7d82350 SR |
6585 | |
6586 | return pevent; | |
6587 | } | |
6588 | ||
6589 | void pevent_ref(struct pevent *pevent) | |
6590 | { | |
6591 | pevent->ref_count++; | |
6592 | } | |
6593 | ||
00ae1127 DA |
6594 | void pevent_free_format_field(struct format_field *field) |
6595 | { | |
6596 | free(field->type); | |
d3542436 JO |
6597 | if (field->alias != field->name) |
6598 | free(field->alias); | |
00ae1127 DA |
6599 | free(field->name); |
6600 | free(field); | |
6601 | } | |
6602 | ||
f7d82350 SR |
6603 | static void free_format_fields(struct format_field *field) |
6604 | { | |
6605 | struct format_field *next; | |
6606 | ||
6607 | while (field) { | |
6608 | next = field->next; | |
00ae1127 | 6609 | pevent_free_format_field(field); |
f7d82350 SR |
6610 | field = next; |
6611 | } | |
6612 | } | |
6613 | ||
6614 | static void free_formats(struct format *format) | |
6615 | { | |
6616 | free_format_fields(format->common_fields); | |
6617 | free_format_fields(format->fields); | |
6618 | } | |
6619 | ||
2b29175d | 6620 | void pevent_free_format(struct event_format *event) |
f7d82350 SR |
6621 | { |
6622 | free(event->name); | |
6623 | free(event->system); | |
6624 | ||
6625 | free_formats(&event->format); | |
6626 | ||
6627 | free(event->print_fmt.format); | |
6628 | free_args(event->print_fmt.args); | |
6629 | ||
6630 | free(event); | |
6631 | } | |
6632 | ||
6633 | /** | |
6634 | * pevent_free - free a pevent handle | |
6635 | * @pevent: the pevent handle to free | |
6636 | */ | |
6637 | void pevent_free(struct pevent *pevent) | |
6638 | { | |
a2525a08 SR |
6639 | struct cmdline_list *cmdlist, *cmdnext; |
6640 | struct func_list *funclist, *funcnext; | |
6641 | struct printk_list *printklist, *printknext; | |
f7d82350 SR |
6642 | struct pevent_function_handler *func_handler; |
6643 | struct event_handler *handle; | |
6644 | int i; | |
6645 | ||
a2525a08 SR |
6646 | if (!pevent) |
6647 | return; | |
6648 | ||
6649 | cmdlist = pevent->cmdlist; | |
6650 | funclist = pevent->funclist; | |
6651 | printklist = pevent->printklist; | |
6652 | ||
f7d82350 SR |
6653 | pevent->ref_count--; |
6654 | if (pevent->ref_count) | |
6655 | return; | |
6656 | ||
6657 | if (pevent->cmdlines) { | |
6658 | for (i = 0; i < pevent->cmdline_count; i++) | |
6659 | free(pevent->cmdlines[i].comm); | |
6660 | free(pevent->cmdlines); | |
6661 | } | |
6662 | ||
6663 | while (cmdlist) { | |
6664 | cmdnext = cmdlist->next; | |
6665 | free(cmdlist->comm); | |
6666 | free(cmdlist); | |
6667 | cmdlist = cmdnext; | |
6668 | } | |
6669 | ||
6670 | if (pevent->func_map) { | |
8a38cce4 | 6671 | for (i = 0; i < (int)pevent->func_count; i++) { |
f7d82350 SR |
6672 | free(pevent->func_map[i].func); |
6673 | free(pevent->func_map[i].mod); | |
6674 | } | |
6675 | free(pevent->func_map); | |
6676 | } | |
6677 | ||
6678 | while (funclist) { | |
6679 | funcnext = funclist->next; | |
6680 | free(funclist->func); | |
6681 | free(funclist->mod); | |
6682 | free(funclist); | |
6683 | funclist = funcnext; | |
6684 | } | |
6685 | ||
6686 | while (pevent->func_handlers) { | |
6687 | func_handler = pevent->func_handlers; | |
6688 | pevent->func_handlers = func_handler->next; | |
6689 | free_func_handle(func_handler); | |
6690 | } | |
6691 | ||
6692 | if (pevent->printk_map) { | |
8a38cce4 | 6693 | for (i = 0; i < (int)pevent->printk_count; i++) |
f7d82350 SR |
6694 | free(pevent->printk_map[i].printk); |
6695 | free(pevent->printk_map); | |
6696 | } | |
6697 | ||
6698 | while (printklist) { | |
6699 | printknext = printklist->next; | |
6700 | free(printklist->printk); | |
6701 | free(printklist); | |
6702 | printklist = printknext; | |
6703 | } | |
6704 | ||
6705 | for (i = 0; i < pevent->nr_events; i++) | |
2b29175d | 6706 | pevent_free_format(pevent->events[i]); |
f7d82350 SR |
6707 | |
6708 | while (pevent->handlers) { | |
6709 | handle = pevent->handlers; | |
6710 | pevent->handlers = handle->next; | |
6711 | free_handler(handle); | |
6712 | } | |
6713 | ||
99ad1417 | 6714 | free(pevent->trace_clock); |
f7d82350 SR |
6715 | free(pevent->events); |
6716 | free(pevent->sort_events); | |
33a2471c | 6717 | free(pevent->func_resolver); |
f7d82350 SR |
6718 | |
6719 | free(pevent); | |
6720 | } | |
6721 | ||
6722 | void pevent_unref(struct pevent *pevent) | |
6723 | { | |
6724 | pevent_free(pevent); | |
6725 | } |