Commit | Line | Data |
---|---|---|
7c6a1c65 PZ |
1 | #include <sys/types.h> |
2 | #include <unistd.h> | |
3 | #include <stdio.h> | |
4 | #include <stdlib.h> | |
8671dab9 | 5 | #include <linux/list.h> |
7c6a1c65 PZ |
6 | |
7 | #include "util.h" | |
8 | #include "header.h" | |
03456a15 FW |
9 | #include "../perf.h" |
10 | #include "trace-event.h" | |
301a0b02 | 11 | #include "session.h" |
8671dab9 | 12 | #include "symbol.h" |
4778d2e4 | 13 | #include "debug.h" |
7c6a1c65 PZ |
14 | |
15 | /* | |
ec60a3fe | 16 | * Create new perf.data header attribute: |
7c6a1c65 | 17 | */ |
cdd6c482 | 18 | struct perf_header_attr *perf_header_attr__new(struct perf_event_attr *attr) |
7c6a1c65 PZ |
19 | { |
20 | struct perf_header_attr *self = malloc(sizeof(*self)); | |
21 | ||
dc79c0fc ACM |
22 | if (self != NULL) { |
23 | self->attr = *attr; | |
24 | self->ids = 0; | |
25 | self->size = 1; | |
26 | self->id = malloc(sizeof(u64)); | |
27 | if (self->id == NULL) { | |
28 | free(self); | |
29 | self = NULL; | |
30 | } | |
31 | } | |
7c6a1c65 PZ |
32 | |
33 | return self; | |
34 | } | |
35 | ||
11deb1f9 ACM |
36 | void perf_header_attr__delete(struct perf_header_attr *self) |
37 | { | |
38 | free(self->id); | |
39 | free(self); | |
40 | } | |
41 | ||
58754121 | 42 | int perf_header_attr__add_id(struct perf_header_attr *self, u64 id) |
7c6a1c65 PZ |
43 | { |
44 | int pos = self->ids; | |
45 | ||
46 | self->ids++; | |
47 | if (self->ids > self->size) { | |
58754121 ACM |
48 | int nsize = self->size * 2; |
49 | u64 *nid = realloc(self->id, nsize * sizeof(u64)); | |
50 | ||
51 | if (nid == NULL) | |
52 | return -1; | |
53 | ||
54 | self->size = nsize; | |
55 | self->id = nid; | |
7c6a1c65 PZ |
56 | } |
57 | self->id[pos] = id; | |
58754121 | 58 | return 0; |
7c6a1c65 PZ |
59 | } |
60 | ||
94c744b6 | 61 | int perf_header__init(struct perf_header *self) |
7c6a1c65 | 62 | { |
94c744b6 ACM |
63 | self->size = 1; |
64 | self->attr = malloc(sizeof(void *)); | |
65 | return self->attr == NULL ? -ENOMEM : 0; | |
7c6a1c65 PZ |
66 | } |
67 | ||
94c744b6 | 68 | void perf_header__exit(struct perf_header *self) |
4dc0a04b ACM |
69 | { |
70 | int i; | |
4dc0a04b | 71 | for (i = 0; i < self->attrs; ++i) |
94c744b6 | 72 | perf_header_attr__delete(self->attr[i]); |
4dc0a04b | 73 | free(self->attr); |
4dc0a04b ACM |
74 | } |
75 | ||
11deb1f9 ACM |
76 | int perf_header__add_attr(struct perf_header *self, |
77 | struct perf_header_attr *attr) | |
7c6a1c65 | 78 | { |
7c6a1c65 | 79 | if (self->frozen) |
11deb1f9 | 80 | return -1; |
7c6a1c65 | 81 | |
4dc0a04b | 82 | if (self->attrs == self->size) { |
11deb1f9 ACM |
83 | int nsize = self->size * 2; |
84 | struct perf_header_attr **nattr; | |
85 | ||
86 | nattr = realloc(self->attr, nsize * sizeof(void *)); | |
87 | if (nattr == NULL) | |
88 | return -1; | |
89 | ||
90 | self->size = nsize; | |
91 | self->attr = nattr; | |
7c6a1c65 | 92 | } |
4dc0a04b ACM |
93 | |
94 | self->attr[self->attrs++] = attr; | |
11deb1f9 | 95 | return 0; |
7c6a1c65 PZ |
96 | } |
97 | ||
ec60a3fe AV |
98 | #define MAX_EVENT_NAME 64 |
99 | ||
8755a8f2 AV |
100 | struct perf_trace_event_type { |
101 | u64 event_id; | |
ec60a3fe | 102 | char name[MAX_EVENT_NAME]; |
8755a8f2 AV |
103 | }; |
104 | ||
105 | static int event_count; | |
106 | static struct perf_trace_event_type *events; | |
107 | ||
ae99fb2c | 108 | int perf_header__push_event(u64 id, const char *name) |
8755a8f2 | 109 | { |
ec60a3fe | 110 | if (strlen(name) > MAX_EVENT_NAME) |
6beba7ad | 111 | pr_warning("Event %s will be truncated\n", name); |
8755a8f2 AV |
112 | |
113 | if (!events) { | |
114 | events = malloc(sizeof(struct perf_trace_event_type)); | |
ae99fb2c ACM |
115 | if (events == NULL) |
116 | return -ENOMEM; | |
8755a8f2 | 117 | } else { |
ae99fb2c ACM |
118 | struct perf_trace_event_type *nevents; |
119 | ||
120 | nevents = realloc(events, (event_count + 1) * sizeof(*events)); | |
121 | if (nevents == NULL) | |
122 | return -ENOMEM; | |
123 | events = nevents; | |
8755a8f2 AV |
124 | } |
125 | memset(&events[event_count], 0, sizeof(struct perf_trace_event_type)); | |
126 | events[event_count].event_id = id; | |
ec60a3fe | 127 | strncpy(events[event_count].name, name, MAX_EVENT_NAME - 1); |
8755a8f2 | 128 | event_count++; |
ae99fb2c | 129 | return 0; |
8755a8f2 AV |
130 | } |
131 | ||
132 | char *perf_header__find_event(u64 id) | |
133 | { | |
134 | int i; | |
135 | for (i = 0 ; i < event_count; i++) { | |
136 | if (events[i].event_id == id) | |
137 | return events[i].name; | |
138 | } | |
139 | return NULL; | |
140 | } | |
141 | ||
7c6a1c65 PZ |
142 | static const char *__perf_magic = "PERFFILE"; |
143 | ||
144 | #define PERF_MAGIC (*(u64 *)__perf_magic) | |
145 | ||
7c6a1c65 | 146 | struct perf_file_attr { |
cdd6c482 | 147 | struct perf_event_attr attr; |
7c6a1c65 PZ |
148 | struct perf_file_section ids; |
149 | }; | |
150 | ||
8d06367f ACM |
151 | void perf_header__set_feat(struct perf_header *self, int feat) |
152 | { | |
153 | set_bit(feat, self->adds_features); | |
154 | } | |
155 | ||
156 | bool perf_header__has_feat(const struct perf_header *self, int feat) | |
157 | { | |
158 | return test_bit(feat, self->adds_features); | |
159 | } | |
160 | ||
3726cc75 | 161 | static int do_write(int fd, const void *buf, size_t size) |
7c6a1c65 PZ |
162 | { |
163 | while (size) { | |
164 | int ret = write(fd, buf, size); | |
165 | ||
166 | if (ret < 0) | |
d5eed904 | 167 | return -errno; |
7c6a1c65 PZ |
168 | |
169 | size -= ret; | |
170 | buf += ret; | |
171 | } | |
3726cc75 ACM |
172 | |
173 | return 0; | |
7c6a1c65 PZ |
174 | } |
175 | ||
f92cb24c ACM |
176 | #define NAME_ALIGN 64 |
177 | ||
178 | static int write_padded(int fd, const void *bf, size_t count, | |
179 | size_t count_aligned) | |
180 | { | |
181 | static const char zero_buf[NAME_ALIGN]; | |
182 | int err = do_write(fd, bf, count); | |
183 | ||
184 | if (!err) | |
185 | err = do_write(fd, zero_buf, count_aligned - count); | |
186 | ||
187 | return err; | |
188 | } | |
189 | ||
4cf40131 ACM |
190 | #define dsos__for_each_with_build_id(pos, head) \ |
191 | list_for_each_entry(pos, head, node) \ | |
192 | if (!pos->has_build_id) \ | |
193 | continue; \ | |
194 | else | |
195 | ||
b0da954a | 196 | static int __dsos__write_buildid_table(struct list_head *head, int fd) |
8671dab9 | 197 | { |
e30a3d12 ACM |
198 | struct dso *pos; |
199 | ||
4cf40131 | 200 | dsos__for_each_with_build_id(pos, head) { |
d5eed904 | 201 | int err; |
e30a3d12 | 202 | struct build_id_event b; |
4cf40131 | 203 | size_t len = pos->long_name_len + 1; |
e30a3d12 | 204 | |
7691b1ec | 205 | len = ALIGN(len, NAME_ALIGN); |
e30a3d12 ACM |
206 | memset(&b, 0, sizeof(b)); |
207 | memcpy(&b.build_id, pos->build_id, sizeof(pos->build_id)); | |
208 | b.header.size = sizeof(b) + len; | |
d5eed904 ACM |
209 | err = do_write(fd, &b, sizeof(b)); |
210 | if (err < 0) | |
211 | return err; | |
f92cb24c ACM |
212 | err = write_padded(fd, pos->long_name, |
213 | pos->long_name_len + 1, len); | |
d5eed904 ACM |
214 | if (err < 0) |
215 | return err; | |
57f395a7 | 216 | } |
3726cc75 ACM |
217 | |
218 | return 0; | |
8671dab9 FW |
219 | } |
220 | ||
b0da954a ACM |
221 | static int dsos__write_buildid_table(int fd) |
222 | { | |
223 | int err = __dsos__write_buildid_table(&dsos__kernel, fd); | |
224 | if (err == 0) | |
225 | err = __dsos__write_buildid_table(&dsos__user, fd); | |
226 | return err; | |
227 | } | |
228 | ||
4cf40131 ACM |
229 | static int dso__cache_build_id(struct dso *self, const char *debugdir) |
230 | { | |
231 | const size_t size = PATH_MAX; | |
232 | char *filename = malloc(size), | |
233 | *linkname = malloc(size), *targetname, *sbuild_id; | |
234 | int len, err = -1; | |
235 | ||
236 | if (filename == NULL || linkname == NULL) | |
237 | goto out_free; | |
238 | ||
239 | len = snprintf(filename, size, "%s%s", debugdir, self->long_name); | |
240 | if (mkdir_p(filename, 0755)) | |
241 | goto out_free; | |
242 | ||
243 | len += snprintf(filename + len, sizeof(filename) - len, "/"); | |
244 | sbuild_id = filename + len; | |
245 | build_id__sprintf(self->build_id, sizeof(self->build_id), sbuild_id); | |
246 | ||
247 | if (access(filename, F_OK) && link(self->long_name, filename) && | |
248 | copyfile(self->long_name, filename)) | |
249 | goto out_free; | |
250 | ||
251 | len = snprintf(linkname, size, "%s/.build-id/%.2s", | |
252 | debugdir, sbuild_id); | |
253 | ||
254 | if (access(linkname, X_OK) && mkdir_p(linkname, 0755)) | |
255 | goto out_free; | |
256 | ||
257 | snprintf(linkname + len, size - len, "/%s", sbuild_id + 2); | |
258 | targetname = filename + strlen(debugdir) - 5; | |
259 | memcpy(targetname, "../..", 5); | |
260 | ||
261 | if (symlink(targetname, linkname) == 0) | |
262 | err = 0; | |
263 | out_free: | |
264 | free(filename); | |
265 | free(linkname); | |
266 | return err; | |
267 | } | |
268 | ||
269 | static int __dsos__cache_build_ids(struct list_head *head, const char *debugdir) | |
270 | { | |
271 | struct dso *pos; | |
272 | int err = 0; | |
273 | ||
274 | dsos__for_each_with_build_id(pos, head) | |
275 | if (dso__cache_build_id(pos, debugdir)) | |
276 | err = -1; | |
277 | ||
278 | return err; | |
279 | } | |
280 | ||
281 | static int dsos__cache_build_ids(void) | |
282 | { | |
283 | int err_kernel, err_user; | |
284 | char debugdir[PATH_MAX]; | |
285 | ||
286 | snprintf(debugdir, sizeof(debugdir), "%s/%s", getenv("HOME"), | |
287 | DEBUG_CACHE_DIR); | |
288 | ||
289 | if (mkdir(debugdir, 0755) != 0 && errno != EEXIST) | |
290 | return -1; | |
291 | ||
292 | err_kernel = __dsos__cache_build_ids(&dsos__kernel, debugdir); | |
293 | err_user = __dsos__cache_build_ids(&dsos__user, debugdir); | |
294 | return err_kernel || err_user ? -1 : 0; | |
295 | } | |
296 | ||
d5eed904 | 297 | static int perf_header__adds_write(struct perf_header *self, int fd) |
2ba08250 | 298 | { |
9e827dd0 FW |
299 | int nr_sections; |
300 | struct perf_file_section *feat_sec; | |
301 | int sec_size; | |
302 | u64 sec_start; | |
d5eed904 | 303 | int idx = 0, err; |
9e827dd0 | 304 | |
e30a3d12 | 305 | if (dsos__read_build_ids()) |
9e827dd0 FW |
306 | perf_header__set_feat(self, HEADER_BUILD_ID); |
307 | ||
308 | nr_sections = bitmap_weight(self->adds_features, HEADER_FEAT_BITS); | |
309 | if (!nr_sections) | |
d5eed904 | 310 | return 0; |
9e827dd0 FW |
311 | |
312 | feat_sec = calloc(sizeof(*feat_sec), nr_sections); | |
d5eed904 ACM |
313 | if (feat_sec == NULL) |
314 | return -ENOMEM; | |
9e827dd0 FW |
315 | |
316 | sec_size = sizeof(*feat_sec) * nr_sections; | |
317 | ||
318 | sec_start = self->data_offset + self->data_size; | |
319 | lseek(fd, sec_start + sec_size, SEEK_SET); | |
2ba08250 | 320 | |
3e13ab2d | 321 | if (perf_header__has_feat(self, HEADER_TRACE_INFO)) { |
9e827dd0 FW |
322 | struct perf_file_section *trace_sec; |
323 | ||
324 | trace_sec = &feat_sec[idx++]; | |
325 | ||
2ba08250 | 326 | /* Write trace info */ |
9e827dd0 | 327 | trace_sec->offset = lseek(fd, 0, SEEK_CUR); |
2ba08250 | 328 | read_tracing_data(fd, attrs, nr_counters); |
9e827dd0 | 329 | trace_sec->size = lseek(fd, 0, SEEK_CUR) - trace_sec->offset; |
2ba08250 | 330 | } |
8671dab9 | 331 | |
57f395a7 | 332 | |
9e827dd0 FW |
333 | if (perf_header__has_feat(self, HEADER_BUILD_ID)) { |
334 | struct perf_file_section *buildid_sec; | |
335 | ||
336 | buildid_sec = &feat_sec[idx++]; | |
337 | ||
338 | /* Write build-ids */ | |
339 | buildid_sec->offset = lseek(fd, 0, SEEK_CUR); | |
d5eed904 ACM |
340 | err = dsos__write_buildid_table(fd); |
341 | if (err < 0) { | |
342 | pr_debug("failed to write buildid table\n"); | |
343 | goto out_free; | |
344 | } | |
9e827dd0 | 345 | buildid_sec->size = lseek(fd, 0, SEEK_CUR) - buildid_sec->offset; |
4cf40131 | 346 | dsos__cache_build_ids(); |
8671dab9 | 347 | } |
9e827dd0 FW |
348 | |
349 | lseek(fd, sec_start, SEEK_SET); | |
d5eed904 ACM |
350 | err = do_write(fd, feat_sec, sec_size); |
351 | if (err < 0) | |
352 | pr_debug("failed to write feature section\n"); | |
353 | out_free: | |
9e827dd0 | 354 | free(feat_sec); |
d5eed904 | 355 | return err; |
9e827dd0 | 356 | } |
2ba08250 | 357 | |
d5eed904 | 358 | int perf_header__write(struct perf_header *self, int fd, bool at_exit) |
7c6a1c65 PZ |
359 | { |
360 | struct perf_file_header f_header; | |
361 | struct perf_file_attr f_attr; | |
362 | struct perf_header_attr *attr; | |
d5eed904 | 363 | int i, err; |
7c6a1c65 PZ |
364 | |
365 | lseek(fd, sizeof(f_header), SEEK_SET); | |
366 | ||
367 | ||
368 | for (i = 0; i < self->attrs; i++) { | |
369 | attr = self->attr[i]; | |
370 | ||
371 | attr->id_offset = lseek(fd, 0, SEEK_CUR); | |
d5eed904 ACM |
372 | err = do_write(fd, attr->id, attr->ids * sizeof(u64)); |
373 | if (err < 0) { | |
374 | pr_debug("failed to write perf header\n"); | |
375 | return err; | |
376 | } | |
7c6a1c65 PZ |
377 | } |
378 | ||
379 | ||
380 | self->attr_offset = lseek(fd, 0, SEEK_CUR); | |
381 | ||
382 | for (i = 0; i < self->attrs; i++) { | |
383 | attr = self->attr[i]; | |
384 | ||
385 | f_attr = (struct perf_file_attr){ | |
386 | .attr = attr->attr, | |
387 | .ids = { | |
388 | .offset = attr->id_offset, | |
389 | .size = attr->ids * sizeof(u64), | |
390 | } | |
391 | }; | |
d5eed904 ACM |
392 | err = do_write(fd, &f_attr, sizeof(f_attr)); |
393 | if (err < 0) { | |
394 | pr_debug("failed to write perf header attribute\n"); | |
395 | return err; | |
396 | } | |
7c6a1c65 PZ |
397 | } |
398 | ||
8755a8f2 AV |
399 | self->event_offset = lseek(fd, 0, SEEK_CUR); |
400 | self->event_size = event_count * sizeof(struct perf_trace_event_type); | |
d5eed904 ACM |
401 | if (events) { |
402 | err = do_write(fd, events, self->event_size); | |
403 | if (err < 0) { | |
404 | pr_debug("failed to write perf header events\n"); | |
405 | return err; | |
406 | } | |
407 | } | |
8755a8f2 | 408 | |
7c6a1c65 PZ |
409 | self->data_offset = lseek(fd, 0, SEEK_CUR); |
410 | ||
d5eed904 ACM |
411 | if (at_exit) { |
412 | err = perf_header__adds_write(self, fd); | |
413 | if (err < 0) | |
414 | return err; | |
415 | } | |
9e827dd0 | 416 | |
7c6a1c65 PZ |
417 | f_header = (struct perf_file_header){ |
418 | .magic = PERF_MAGIC, | |
419 | .size = sizeof(f_header), | |
420 | .attr_size = sizeof(f_attr), | |
421 | .attrs = { | |
422 | .offset = self->attr_offset, | |
423 | .size = self->attrs * sizeof(f_attr), | |
424 | }, | |
425 | .data = { | |
426 | .offset = self->data_offset, | |
427 | .size = self->data_size, | |
428 | }, | |
8755a8f2 AV |
429 | .event_types = { |
430 | .offset = self->event_offset, | |
431 | .size = self->event_size, | |
432 | }, | |
7c6a1c65 PZ |
433 | }; |
434 | ||
db9f11e3 | 435 | memcpy(&f_header.adds_features, &self->adds_features, sizeof(self->adds_features)); |
2ba08250 | 436 | |
7c6a1c65 | 437 | lseek(fd, 0, SEEK_SET); |
d5eed904 ACM |
438 | err = do_write(fd, &f_header, sizeof(f_header)); |
439 | if (err < 0) { | |
440 | pr_debug("failed to write perf header\n"); | |
441 | return err; | |
442 | } | |
7c6a1c65 PZ |
443 | lseek(fd, self->data_offset + self->data_size, SEEK_SET); |
444 | ||
445 | self->frozen = 1; | |
d5eed904 | 446 | return 0; |
7c6a1c65 PZ |
447 | } |
448 | ||
769885f3 | 449 | static int do_read(int fd, void *buf, size_t size) |
7c6a1c65 PZ |
450 | { |
451 | while (size) { | |
452 | int ret = read(fd, buf, size); | |
453 | ||
769885f3 ACM |
454 | if (ret <= 0) |
455 | return -1; | |
7c6a1c65 PZ |
456 | |
457 | size -= ret; | |
458 | buf += ret; | |
459 | } | |
769885f3 ACM |
460 | |
461 | return 0; | |
7c6a1c65 PZ |
462 | } |
463 | ||
37562eac ACM |
464 | int perf_header__process_sections(struct perf_header *self, int fd, |
465 | int (*process)(struct perf_file_section *self, | |
466 | int feat, int fd)) | |
2ba08250 | 467 | { |
9e827dd0 FW |
468 | struct perf_file_section *feat_sec; |
469 | int nr_sections; | |
470 | int sec_size; | |
471 | int idx = 0; | |
769885f3 | 472 | int err = -1, feat = 1; |
9e827dd0 FW |
473 | |
474 | nr_sections = bitmap_weight(self->adds_features, HEADER_FEAT_BITS); | |
475 | if (!nr_sections) | |
37562eac | 476 | return 0; |
9e827dd0 FW |
477 | |
478 | feat_sec = calloc(sizeof(*feat_sec), nr_sections); | |
479 | if (!feat_sec) | |
37562eac | 480 | return -1; |
9e827dd0 FW |
481 | |
482 | sec_size = sizeof(*feat_sec) * nr_sections; | |
483 | ||
484 | lseek(fd, self->data_offset + self->data_size, SEEK_SET); | |
485 | ||
769885f3 ACM |
486 | if (do_read(fd, feat_sec, sec_size)) |
487 | goto out_free; | |
9e827dd0 | 488 | |
769885f3 | 489 | err = 0; |
37562eac ACM |
490 | while (idx < nr_sections && feat < HEADER_LAST_FEATURE) { |
491 | if (perf_header__has_feat(self, feat)) { | |
492 | struct perf_file_section *sec = &feat_sec[idx++]; | |
2ba08250 | 493 | |
37562eac ACM |
494 | err = process(sec, feat, fd); |
495 | if (err < 0) | |
496 | break; | |
497 | } | |
498 | ++feat; | |
2ba08250 | 499 | } |
769885f3 | 500 | out_free: |
37562eac ACM |
501 | free(feat_sec); |
502 | return err; | |
769885f3 | 503 | } |
4778d2e4 | 504 | |
37562eac ACM |
505 | int perf_file_header__read(struct perf_file_header *self, |
506 | struct perf_header *ph, int fd) | |
507 | { | |
508 | lseek(fd, 0, SEEK_SET); | |
37562eac | 509 | |
769885f3 ACM |
510 | if (do_read(fd, self, sizeof(*self)) || |
511 | self->magic != PERF_MAGIC || | |
37562eac ACM |
512 | self->attr_size != sizeof(struct perf_file_attr)) |
513 | return -1; | |
514 | ||
515 | if (self->size != sizeof(*self)) { | |
516 | /* Support the previous format */ | |
517 | if (self->size == offsetof(typeof(*self), adds_features)) | |
518 | bitmap_zero(self->adds_features, HEADER_FEAT_BITS); | |
519 | else | |
520 | return -1; | |
4778d2e4 | 521 | } |
9e827dd0 | 522 | |
37562eac ACM |
523 | memcpy(&ph->adds_features, &self->adds_features, |
524 | sizeof(self->adds_features)); | |
525 | ||
526 | ph->event_offset = self->event_types.offset; | |
527 | ph->event_size = self->event_types.size; | |
528 | ph->data_offset = self->data.offset; | |
529 | ph->data_size = self->data.size; | |
530 | return 0; | |
531 | } | |
532 | ||
533 | static int perf_file_section__process(struct perf_file_section *self, | |
534 | int feat, int fd) | |
535 | { | |
536 | if (lseek(fd, self->offset, SEEK_SET) < 0) { | |
537 | pr_debug("Failed to lseek to %Ld offset for feature %d, " | |
538 | "continuing...\n", self->offset, feat); | |
539 | return 0; | |
540 | } | |
541 | ||
542 | switch (feat) { | |
543 | case HEADER_TRACE_INFO: | |
544 | trace_report(fd); | |
545 | break; | |
546 | ||
547 | case HEADER_BUILD_ID: | |
548 | if (perf_header__read_build_ids(fd, self->offset, self->size)) | |
549 | pr_debug("Failed to read buildids, continuing...\n"); | |
550 | break; | |
551 | default: | |
552 | pr_debug("unknown feature %d, continuing...\n", feat); | |
553 | } | |
554 | ||
555 | return 0; | |
556 | } | |
2ba08250 | 557 | |
4dc0a04b | 558 | int perf_header__read(struct perf_header *self, int fd) |
7c6a1c65 | 559 | { |
7c6a1c65 PZ |
560 | struct perf_file_header f_header; |
561 | struct perf_file_attr f_attr; | |
562 | u64 f_id; | |
7c6a1c65 PZ |
563 | int nr_attrs, nr_ids, i, j; |
564 | ||
4dc0a04b ACM |
565 | if (perf_file_header__read(&f_header, self, fd) < 0) { |
566 | pr_debug("incompatible file format\n"); | |
567 | return -EINVAL; | |
568 | } | |
7c6a1c65 PZ |
569 | |
570 | nr_attrs = f_header.attrs.size / sizeof(f_attr); | |
571 | lseek(fd, f_header.attrs.offset, SEEK_SET); | |
572 | ||
573 | for (i = 0; i < nr_attrs; i++) { | |
574 | struct perf_header_attr *attr; | |
1c222bce | 575 | off_t tmp; |
7c6a1c65 | 576 | |
769885f3 ACM |
577 | if (do_read(fd, &f_attr, sizeof(f_attr))) |
578 | goto out_errno; | |
1c222bce | 579 | tmp = lseek(fd, 0, SEEK_CUR); |
7c6a1c65 PZ |
580 | |
581 | attr = perf_header_attr__new(&f_attr.attr); | |
dc79c0fc | 582 | if (attr == NULL) |
4dc0a04b | 583 | return -ENOMEM; |
7c6a1c65 PZ |
584 | |
585 | nr_ids = f_attr.ids.size / sizeof(u64); | |
586 | lseek(fd, f_attr.ids.offset, SEEK_SET); | |
587 | ||
588 | for (j = 0; j < nr_ids; j++) { | |
769885f3 ACM |
589 | if (do_read(fd, &f_id, sizeof(f_id))) |
590 | goto out_errno; | |
7c6a1c65 | 591 | |
4dc0a04b ACM |
592 | if (perf_header_attr__add_id(attr, f_id) < 0) { |
593 | perf_header_attr__delete(attr); | |
594 | return -ENOMEM; | |
595 | } | |
596 | } | |
597 | if (perf_header__add_attr(self, attr) < 0) { | |
598 | perf_header_attr__delete(attr); | |
599 | return -ENOMEM; | |
7c6a1c65 | 600 | } |
11deb1f9 | 601 | |
7c6a1c65 PZ |
602 | lseek(fd, tmp, SEEK_SET); |
603 | } | |
604 | ||
8755a8f2 AV |
605 | if (f_header.event_types.size) { |
606 | lseek(fd, f_header.event_types.offset, SEEK_SET); | |
607 | events = malloc(f_header.event_types.size); | |
4dc0a04b ACM |
608 | if (events == NULL) |
609 | return -ENOMEM; | |
769885f3 ACM |
610 | if (do_read(fd, events, f_header.event_types.size)) |
611 | goto out_errno; | |
8755a8f2 AV |
612 | event_count = f_header.event_types.size / sizeof(struct perf_trace_event_type); |
613 | } | |
03456a15 | 614 | |
37562eac | 615 | perf_header__process_sections(self, fd, perf_file_section__process); |
4778d2e4 | 616 | |
2e01d179 | 617 | lseek(fd, self->data_offset, SEEK_SET); |
7c6a1c65 PZ |
618 | |
619 | self->frozen = 1; | |
4dc0a04b | 620 | return 0; |
769885f3 ACM |
621 | out_errno: |
622 | return -errno; | |
7c6a1c65 | 623 | } |
0d3a5c88 FW |
624 | |
625 | u64 perf_header__sample_type(struct perf_header *header) | |
626 | { | |
627 | u64 type = 0; | |
628 | int i; | |
629 | ||
630 | for (i = 0; i < header->attrs; i++) { | |
631 | struct perf_header_attr *attr = header->attr[i]; | |
632 | ||
633 | if (!type) | |
634 | type = attr->attr.sample_type; | |
635 | else if (type != attr->attr.sample_type) | |
636 | die("non matching sample_type"); | |
637 | } | |
638 | ||
639 | return type; | |
640 | } | |
641 | ||
cdd6c482 | 642 | struct perf_event_attr * |
0d3a5c88 FW |
643 | perf_header__find_attr(u64 id, struct perf_header *header) |
644 | { | |
645 | int i; | |
646 | ||
647 | for (i = 0; i < header->attrs; i++) { | |
648 | struct perf_header_attr *attr = header->attr[i]; | |
649 | int j; | |
650 | ||
651 | for (j = 0; j < attr->ids; j++) { | |
652 | if (attr->id[j] == id) | |
653 | return &attr->attr; | |
654 | } | |
655 | } | |
656 | ||
657 | return NULL; | |
658 | } |