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Commit | Line | Data |
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bda6ee4a | 1 | #include <asm/bug.h> |
c6580451 JO |
2 | #include <sys/time.h> |
3 | #include <sys/resource.h> | |
cdd059d7 JO |
4 | #include "symbol.h" |
5 | #include "dso.h" | |
69d2591a | 6 | #include "machine.h" |
cfe9174f | 7 | #include "auxtrace.h" |
cdd059d7 JO |
8 | #include "util.h" |
9 | #include "debug.h" | |
6ae98ba6 | 10 | #include "vdso.h" |
cdd059d7 JO |
11 | |
12 | char dso__symtab_origin(const struct dso *dso) | |
13 | { | |
14 | static const char origin[] = { | |
9cd00941 RR |
15 | [DSO_BINARY_TYPE__KALLSYMS] = 'k', |
16 | [DSO_BINARY_TYPE__VMLINUX] = 'v', | |
17 | [DSO_BINARY_TYPE__JAVA_JIT] = 'j', | |
18 | [DSO_BINARY_TYPE__DEBUGLINK] = 'l', | |
19 | [DSO_BINARY_TYPE__BUILD_ID_CACHE] = 'B', | |
20 | [DSO_BINARY_TYPE__FEDORA_DEBUGINFO] = 'f', | |
21 | [DSO_BINARY_TYPE__UBUNTU_DEBUGINFO] = 'u', | |
22 | [DSO_BINARY_TYPE__OPENEMBEDDED_DEBUGINFO] = 'o', | |
23 | [DSO_BINARY_TYPE__BUILDID_DEBUGINFO] = 'b', | |
24 | [DSO_BINARY_TYPE__SYSTEM_PATH_DSO] = 'd', | |
25 | [DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE] = 'K', | |
c00c48fc | 26 | [DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE_COMP] = 'm', |
9cd00941 RR |
27 | [DSO_BINARY_TYPE__GUEST_KALLSYMS] = 'g', |
28 | [DSO_BINARY_TYPE__GUEST_KMODULE] = 'G', | |
c00c48fc | 29 | [DSO_BINARY_TYPE__GUEST_KMODULE_COMP] = 'M', |
9cd00941 | 30 | [DSO_BINARY_TYPE__GUEST_VMLINUX] = 'V', |
cdd059d7 JO |
31 | }; |
32 | ||
33 | if (dso == NULL || dso->symtab_type == DSO_BINARY_TYPE__NOT_FOUND) | |
34 | return '!'; | |
35 | return origin[dso->symtab_type]; | |
36 | } | |
37 | ||
ee4e9625 ACM |
38 | int dso__read_binary_type_filename(const struct dso *dso, |
39 | enum dso_binary_type type, | |
40 | char *root_dir, char *filename, size_t size) | |
cdd059d7 | 41 | { |
b5d8bbe8 | 42 | char build_id_hex[SBUILD_ID_SIZE]; |
cdd059d7 | 43 | int ret = 0; |
972f393b | 44 | size_t len; |
cdd059d7 JO |
45 | |
46 | switch (type) { | |
47 | case DSO_BINARY_TYPE__DEBUGLINK: { | |
48 | char *debuglink; | |
49 | ||
dc6254cf VK |
50 | len = __symbol__join_symfs(filename, size, dso->long_name); |
51 | debuglink = filename + len; | |
7d2a5122 | 52 | while (debuglink != filename && *debuglink != '/') |
cdd059d7 JO |
53 | debuglink--; |
54 | if (*debuglink == '/') | |
55 | debuglink++; | |
40356721 JO |
56 | |
57 | ret = -1; | |
58 | if (!is_regular_file(filename)) | |
59 | break; | |
60 | ||
dc6254cf | 61 | ret = filename__read_debuglink(filename, debuglink, |
0d3dc5e8 | 62 | size - (debuglink - filename)); |
cdd059d7 JO |
63 | } |
64 | break; | |
65 | case DSO_BINARY_TYPE__BUILD_ID_CACHE: | |
a7066709 | 66 | if (dso__build_id_filename(dso, filename, size) == NULL) |
cdd059d7 JO |
67 | ret = -1; |
68 | break; | |
69 | ||
70 | case DSO_BINARY_TYPE__FEDORA_DEBUGINFO: | |
972f393b ACM |
71 | len = __symbol__join_symfs(filename, size, "/usr/lib/debug"); |
72 | snprintf(filename + len, size - len, "%s.debug", dso->long_name); | |
cdd059d7 JO |
73 | break; |
74 | ||
75 | case DSO_BINARY_TYPE__UBUNTU_DEBUGINFO: | |
972f393b ACM |
76 | len = __symbol__join_symfs(filename, size, "/usr/lib/debug"); |
77 | snprintf(filename + len, size - len, "%s", dso->long_name); | |
cdd059d7 JO |
78 | break; |
79 | ||
9cd00941 RR |
80 | case DSO_BINARY_TYPE__OPENEMBEDDED_DEBUGINFO: |
81 | { | |
bf4414ae | 82 | const char *last_slash; |
9cd00941 RR |
83 | size_t dir_size; |
84 | ||
85 | last_slash = dso->long_name + dso->long_name_len; | |
86 | while (last_slash != dso->long_name && *last_slash != '/') | |
87 | last_slash--; | |
88 | ||
972f393b | 89 | len = __symbol__join_symfs(filename, size, ""); |
9cd00941 RR |
90 | dir_size = last_slash - dso->long_name + 2; |
91 | if (dir_size > (size - len)) { | |
92 | ret = -1; | |
93 | break; | |
94 | } | |
7d2a5122 ACM |
95 | len += scnprintf(filename + len, dir_size, "%s", dso->long_name); |
96 | len += scnprintf(filename + len , size - len, ".debug%s", | |
9cd00941 RR |
97 | last_slash); |
98 | break; | |
99 | } | |
100 | ||
cdd059d7 JO |
101 | case DSO_BINARY_TYPE__BUILDID_DEBUGINFO: |
102 | if (!dso->has_build_id) { | |
103 | ret = -1; | |
104 | break; | |
105 | } | |
106 | ||
107 | build_id__sprintf(dso->build_id, | |
108 | sizeof(dso->build_id), | |
109 | build_id_hex); | |
972f393b ACM |
110 | len = __symbol__join_symfs(filename, size, "/usr/lib/debug/.build-id/"); |
111 | snprintf(filename + len, size - len, "%.2s/%s.debug", | |
112 | build_id_hex, build_id_hex + 2); | |
cdd059d7 JO |
113 | break; |
114 | ||
39b12f78 AH |
115 | case DSO_BINARY_TYPE__VMLINUX: |
116 | case DSO_BINARY_TYPE__GUEST_VMLINUX: | |
cdd059d7 | 117 | case DSO_BINARY_TYPE__SYSTEM_PATH_DSO: |
972f393b | 118 | __symbol__join_symfs(filename, size, dso->long_name); |
cdd059d7 JO |
119 | break; |
120 | ||
121 | case DSO_BINARY_TYPE__GUEST_KMODULE: | |
c00c48fc | 122 | case DSO_BINARY_TYPE__GUEST_KMODULE_COMP: |
972f393b ACM |
123 | path__join3(filename, size, symbol_conf.symfs, |
124 | root_dir, dso->long_name); | |
cdd059d7 JO |
125 | break; |
126 | ||
127 | case DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE: | |
c00c48fc | 128 | case DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE_COMP: |
972f393b | 129 | __symbol__join_symfs(filename, size, dso->long_name); |
cdd059d7 JO |
130 | break; |
131 | ||
8e0cf965 AH |
132 | case DSO_BINARY_TYPE__KCORE: |
133 | case DSO_BINARY_TYPE__GUEST_KCORE: | |
7d2a5122 | 134 | snprintf(filename, size, "%s", dso->long_name); |
8e0cf965 AH |
135 | break; |
136 | ||
cdd059d7 JO |
137 | default: |
138 | case DSO_BINARY_TYPE__KALLSYMS: | |
cdd059d7 | 139 | case DSO_BINARY_TYPE__GUEST_KALLSYMS: |
cdd059d7 JO |
140 | case DSO_BINARY_TYPE__JAVA_JIT: |
141 | case DSO_BINARY_TYPE__NOT_FOUND: | |
142 | ret = -1; | |
143 | break; | |
144 | } | |
145 | ||
146 | return ret; | |
147 | } | |
148 | ||
c00c48fc NK |
149 | static const struct { |
150 | const char *fmt; | |
151 | int (*decompress)(const char *input, int output); | |
152 | } compressions[] = { | |
e92ce12e NK |
153 | #ifdef HAVE_ZLIB_SUPPORT |
154 | { "gz", gzip_decompress_to_file }, | |
80a32e5b JO |
155 | #endif |
156 | #ifdef HAVE_LZMA_SUPPORT | |
157 | { "xz", lzma_decompress_to_file }, | |
e92ce12e NK |
158 | #endif |
159 | { NULL, NULL }, | |
c00c48fc NK |
160 | }; |
161 | ||
162 | bool is_supported_compression(const char *ext) | |
163 | { | |
164 | unsigned i; | |
165 | ||
166 | for (i = 0; compressions[i].fmt; i++) { | |
167 | if (!strcmp(ext, compressions[i].fmt)) | |
168 | return true; | |
169 | } | |
170 | return false; | |
171 | } | |
172 | ||
1f121b03 | 173 | bool is_kernel_module(const char *pathname, int cpumode) |
c00c48fc | 174 | { |
8dee9ff1 | 175 | struct kmod_path m; |
1f121b03 WN |
176 | int mode = cpumode & PERF_RECORD_MISC_CPUMODE_MASK; |
177 | ||
178 | WARN_ONCE(mode != cpumode, | |
179 | "Internal error: passing unmasked cpumode (%x) to is_kernel_module", | |
180 | cpumode); | |
181 | ||
182 | switch (mode) { | |
183 | case PERF_RECORD_MISC_USER: | |
184 | case PERF_RECORD_MISC_HYPERVISOR: | |
185 | case PERF_RECORD_MISC_GUEST_USER: | |
186 | return false; | |
187 | /* Treat PERF_RECORD_MISC_CPUMODE_UNKNOWN as kernel */ | |
188 | default: | |
189 | if (kmod_path__parse(&m, pathname)) { | |
190 | pr_err("Failed to check whether %s is a kernel module or not. Assume it is.", | |
191 | pathname); | |
192 | return true; | |
193 | } | |
194 | } | |
c00c48fc | 195 | |
8dee9ff1 | 196 | return m.kmod; |
c00c48fc NK |
197 | } |
198 | ||
199 | bool decompress_to_file(const char *ext, const char *filename, int output_fd) | |
200 | { | |
201 | unsigned i; | |
202 | ||
203 | for (i = 0; compressions[i].fmt; i++) { | |
204 | if (!strcmp(ext, compressions[i].fmt)) | |
205 | return !compressions[i].decompress(filename, | |
206 | output_fd); | |
207 | } | |
208 | return false; | |
209 | } | |
210 | ||
211 | bool dso__needs_decompress(struct dso *dso) | |
212 | { | |
213 | return dso->symtab_type == DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE_COMP || | |
214 | dso->symtab_type == DSO_BINARY_TYPE__GUEST_KMODULE_COMP; | |
215 | } | |
216 | ||
3c8a67f5 JO |
217 | /* |
218 | * Parses kernel module specified in @path and updates | |
219 | * @m argument like: | |
220 | * | |
221 | * @comp - true if @path contains supported compression suffix, | |
222 | * false otherwise | |
223 | * @kmod - true if @path contains '.ko' suffix in right position, | |
224 | * false otherwise | |
225 | * @name - if (@alloc_name && @kmod) is true, it contains strdup-ed base name | |
226 | * of the kernel module without suffixes, otherwise strudup-ed | |
227 | * base name of @path | |
228 | * @ext - if (@alloc_ext && @comp) is true, it contains strdup-ed string | |
229 | * the compression suffix | |
230 | * | |
231 | * Returns 0 if there's no strdup error, -ENOMEM otherwise. | |
232 | */ | |
233 | int __kmod_path__parse(struct kmod_path *m, const char *path, | |
234 | bool alloc_name, bool alloc_ext) | |
235 | { | |
236 | const char *name = strrchr(path, '/'); | |
237 | const char *ext = strrchr(path, '.'); | |
1f121b03 | 238 | bool is_simple_name = false; |
3c8a67f5 JO |
239 | |
240 | memset(m, 0x0, sizeof(*m)); | |
241 | name = name ? name + 1 : path; | |
242 | ||
1f121b03 WN |
243 | /* |
244 | * '.' is also a valid character for module name. For example: | |
245 | * [aaa.bbb] is a valid module name. '[' should have higher | |
246 | * priority than '.ko' suffix. | |
247 | * | |
248 | * The kernel names are from machine__mmap_name. Such | |
249 | * name should belong to kernel itself, not kernel module. | |
250 | */ | |
251 | if (name[0] == '[') { | |
252 | is_simple_name = true; | |
253 | if ((strncmp(name, "[kernel.kallsyms]", 17) == 0) || | |
254 | (strncmp(name, "[guest.kernel.kallsyms", 22) == 0) || | |
255 | (strncmp(name, "[vdso]", 6) == 0) || | |
256 | (strncmp(name, "[vsyscall]", 10) == 0)) { | |
257 | m->kmod = false; | |
258 | ||
259 | } else | |
260 | m->kmod = true; | |
261 | } | |
262 | ||
3c8a67f5 | 263 | /* No extension, just return name. */ |
1f121b03 | 264 | if ((ext == NULL) || is_simple_name) { |
3c8a67f5 JO |
265 | if (alloc_name) { |
266 | m->name = strdup(name); | |
267 | return m->name ? 0 : -ENOMEM; | |
268 | } | |
269 | return 0; | |
270 | } | |
271 | ||
272 | if (is_supported_compression(ext + 1)) { | |
273 | m->comp = true; | |
274 | ext -= 3; | |
275 | } | |
276 | ||
277 | /* Check .ko extension only if there's enough name left. */ | |
278 | if (ext > name) | |
279 | m->kmod = !strncmp(ext, ".ko", 3); | |
280 | ||
281 | if (alloc_name) { | |
282 | if (m->kmod) { | |
283 | if (asprintf(&m->name, "[%.*s]", (int) (ext - name), name) == -1) | |
284 | return -ENOMEM; | |
285 | } else { | |
286 | if (asprintf(&m->name, "%s", name) == -1) | |
287 | return -ENOMEM; | |
288 | } | |
289 | ||
290 | strxfrchar(m->name, '-', '_'); | |
291 | } | |
292 | ||
293 | if (alloc_ext && m->comp) { | |
294 | m->ext = strdup(ext + 4); | |
295 | if (!m->ext) { | |
296 | free((void *) m->name); | |
297 | return -ENOMEM; | |
298 | } | |
299 | } | |
300 | ||
301 | return 0; | |
302 | } | |
303 | ||
eba5102d | 304 | /* |
bda6ee4a | 305 | * Global list of open DSOs and the counter. |
eba5102d JO |
306 | */ |
307 | static LIST_HEAD(dso__data_open); | |
bda6ee4a | 308 | static long dso__data_open_cnt; |
33bdedce | 309 | static pthread_mutex_t dso__data_open_lock = PTHREAD_MUTEX_INITIALIZER; |
eba5102d JO |
310 | |
311 | static void dso__list_add(struct dso *dso) | |
312 | { | |
313 | list_add_tail(&dso->data.open_entry, &dso__data_open); | |
bda6ee4a | 314 | dso__data_open_cnt++; |
eba5102d JO |
315 | } |
316 | ||
317 | static void dso__list_del(struct dso *dso) | |
318 | { | |
319 | list_del(&dso->data.open_entry); | |
bda6ee4a JO |
320 | WARN_ONCE(dso__data_open_cnt <= 0, |
321 | "DSO data fd counter out of bounds."); | |
322 | dso__data_open_cnt--; | |
eba5102d JO |
323 | } |
324 | ||
a08cae03 JO |
325 | static void close_first_dso(void); |
326 | ||
327 | static int do_open(char *name) | |
328 | { | |
329 | int fd; | |
6e81c74c | 330 | char sbuf[STRERR_BUFSIZE]; |
a08cae03 JO |
331 | |
332 | do { | |
333 | fd = open(name, O_RDONLY); | |
334 | if (fd >= 0) | |
335 | return fd; | |
336 | ||
a3c0cc2a | 337 | pr_debug("dso open failed: %s\n", |
c8b5f2c9 | 338 | str_error_r(errno, sbuf, sizeof(sbuf))); |
a08cae03 JO |
339 | if (!dso__data_open_cnt || errno != EMFILE) |
340 | break; | |
341 | ||
342 | close_first_dso(); | |
343 | } while (1); | |
344 | ||
345 | return -1; | |
346 | } | |
347 | ||
eba5102d | 348 | static int __open_dso(struct dso *dso, struct machine *machine) |
cdd059d7 | 349 | { |
cdd059d7 | 350 | int fd; |
ee4e9625 ACM |
351 | char *root_dir = (char *)""; |
352 | char *name = malloc(PATH_MAX); | |
cdd059d7 | 353 | |
cdd059d7 JO |
354 | if (!name) |
355 | return -ENOMEM; | |
356 | ||
357 | if (machine) | |
358 | root_dir = machine->root_dir; | |
359 | ||
5f70619d | 360 | if (dso__read_binary_type_filename(dso, dso->binary_type, |
ee4e9625 | 361 | root_dir, name, PATH_MAX)) { |
cdd059d7 JO |
362 | free(name); |
363 | return -EINVAL; | |
364 | } | |
365 | ||
a08cae03 | 366 | fd = do_open(name); |
cdd059d7 JO |
367 | free(name); |
368 | return fd; | |
369 | } | |
370 | ||
c6580451 JO |
371 | static void check_data_close(void); |
372 | ||
c1f9aa0a JO |
373 | /** |
374 | * dso_close - Open DSO data file | |
375 | * @dso: dso object | |
376 | * | |
377 | * Open @dso's data file descriptor and updates | |
378 | * list/count of open DSO objects. | |
379 | */ | |
eba5102d JO |
380 | static int open_dso(struct dso *dso, struct machine *machine) |
381 | { | |
382 | int fd = __open_dso(dso, machine); | |
383 | ||
a6f6ae99 | 384 | if (fd >= 0) { |
eba5102d | 385 | dso__list_add(dso); |
c6580451 JO |
386 | /* |
387 | * Check if we crossed the allowed number | |
388 | * of opened DSOs and close one if needed. | |
389 | */ | |
390 | check_data_close(); | |
391 | } | |
eba5102d JO |
392 | |
393 | return fd; | |
394 | } | |
395 | ||
396 | static void close_data_fd(struct dso *dso) | |
53fa8eaa JO |
397 | { |
398 | if (dso->data.fd >= 0) { | |
399 | close(dso->data.fd); | |
400 | dso->data.fd = -1; | |
c3fbd2a6 | 401 | dso->data.file_size = 0; |
eba5102d | 402 | dso__list_del(dso); |
53fa8eaa JO |
403 | } |
404 | } | |
405 | ||
c1f9aa0a JO |
406 | /** |
407 | * dso_close - Close DSO data file | |
408 | * @dso: dso object | |
409 | * | |
410 | * Close @dso's data file descriptor and updates | |
411 | * list/count of open DSO objects. | |
412 | */ | |
eba5102d JO |
413 | static void close_dso(struct dso *dso) |
414 | { | |
415 | close_data_fd(dso); | |
416 | } | |
417 | ||
c6580451 JO |
418 | static void close_first_dso(void) |
419 | { | |
420 | struct dso *dso; | |
421 | ||
422 | dso = list_first_entry(&dso__data_open, struct dso, data.open_entry); | |
423 | close_dso(dso); | |
424 | } | |
425 | ||
426 | static rlim_t get_fd_limit(void) | |
427 | { | |
428 | struct rlimit l; | |
429 | rlim_t limit = 0; | |
430 | ||
431 | /* Allow half of the current open fd limit. */ | |
432 | if (getrlimit(RLIMIT_NOFILE, &l) == 0) { | |
433 | if (l.rlim_cur == RLIM_INFINITY) | |
434 | limit = l.rlim_cur; | |
435 | else | |
436 | limit = l.rlim_cur / 2; | |
437 | } else { | |
438 | pr_err("failed to get fd limit\n"); | |
439 | limit = 1; | |
440 | } | |
441 | ||
442 | return limit; | |
443 | } | |
444 | ||
f3069249 JO |
445 | static rlim_t fd_limit; |
446 | ||
447 | /* | |
448 | * Used only by tests/dso-data.c to reset the environment | |
449 | * for tests. I dont expect we should change this during | |
450 | * standard runtime. | |
451 | */ | |
452 | void reset_fd_limit(void) | |
c6580451 | 453 | { |
f3069249 JO |
454 | fd_limit = 0; |
455 | } | |
c6580451 | 456 | |
f3069249 JO |
457 | static bool may_cache_fd(void) |
458 | { | |
459 | if (!fd_limit) | |
460 | fd_limit = get_fd_limit(); | |
c6580451 | 461 | |
f3069249 | 462 | if (fd_limit == RLIM_INFINITY) |
c6580451 JO |
463 | return true; |
464 | ||
f3069249 | 465 | return fd_limit > (rlim_t) dso__data_open_cnt; |
c6580451 JO |
466 | } |
467 | ||
c1f9aa0a JO |
468 | /* |
469 | * Check and close LRU dso if we crossed allowed limit | |
470 | * for opened dso file descriptors. The limit is half | |
471 | * of the RLIMIT_NOFILE files opened. | |
472 | */ | |
c6580451 JO |
473 | static void check_data_close(void) |
474 | { | |
475 | bool cache_fd = may_cache_fd(); | |
476 | ||
477 | if (!cache_fd) | |
478 | close_first_dso(); | |
479 | } | |
480 | ||
c1f9aa0a JO |
481 | /** |
482 | * dso__data_close - Close DSO data file | |
483 | * @dso: dso object | |
484 | * | |
485 | * External interface to close @dso's data file descriptor. | |
486 | */ | |
eba5102d JO |
487 | void dso__data_close(struct dso *dso) |
488 | { | |
33bdedce | 489 | pthread_mutex_lock(&dso__data_open_lock); |
eba5102d | 490 | close_dso(dso); |
33bdedce | 491 | pthread_mutex_unlock(&dso__data_open_lock); |
eba5102d JO |
492 | } |
493 | ||
71ff824a | 494 | static void try_to_open_dso(struct dso *dso, struct machine *machine) |
cdd059d7 | 495 | { |
631d34b5 | 496 | enum dso_binary_type binary_type_data[] = { |
cdd059d7 JO |
497 | DSO_BINARY_TYPE__BUILD_ID_CACHE, |
498 | DSO_BINARY_TYPE__SYSTEM_PATH_DSO, | |
499 | DSO_BINARY_TYPE__NOT_FOUND, | |
500 | }; | |
501 | int i = 0; | |
502 | ||
53fa8eaa | 503 | if (dso->data.fd >= 0) |
71ff824a | 504 | return; |
53fa8eaa JO |
505 | |
506 | if (dso->binary_type != DSO_BINARY_TYPE__NOT_FOUND) { | |
507 | dso->data.fd = open_dso(dso, machine); | |
c27697d6 | 508 | goto out; |
53fa8eaa | 509 | } |
cdd059d7 JO |
510 | |
511 | do { | |
5f70619d | 512 | dso->binary_type = binary_type_data[i++]; |
cdd059d7 | 513 | |
c27697d6 AH |
514 | dso->data.fd = open_dso(dso, machine); |
515 | if (dso->data.fd >= 0) | |
516 | goto out; | |
cdd059d7 | 517 | |
5f70619d | 518 | } while (dso->binary_type != DSO_BINARY_TYPE__NOT_FOUND); |
c27697d6 AH |
519 | out: |
520 | if (dso->data.fd >= 0) | |
521 | dso->data.status = DSO_DATA_STATUS_OK; | |
522 | else | |
523 | dso->data.status = DSO_DATA_STATUS_ERROR; | |
71ff824a NK |
524 | } |
525 | ||
526 | /** | |
4bb11d01 | 527 | * dso__data_get_fd - Get dso's data file descriptor |
71ff824a NK |
528 | * @dso: dso object |
529 | * @machine: machine object | |
530 | * | |
531 | * External interface to find dso's file, open it and | |
4bb11d01 NK |
532 | * returns file descriptor. It should be paired with |
533 | * dso__data_put_fd() if it returns non-negative value. | |
71ff824a | 534 | */ |
4bb11d01 | 535 | int dso__data_get_fd(struct dso *dso, struct machine *machine) |
71ff824a NK |
536 | { |
537 | if (dso->data.status == DSO_DATA_STATUS_ERROR) | |
538 | return -1; | |
cdd059d7 | 539 | |
4bb11d01 NK |
540 | if (pthread_mutex_lock(&dso__data_open_lock) < 0) |
541 | return -1; | |
542 | ||
71ff824a | 543 | try_to_open_dso(dso, machine); |
4bb11d01 NK |
544 | |
545 | if (dso->data.fd < 0) | |
546 | pthread_mutex_unlock(&dso__data_open_lock); | |
71ff824a | 547 | |
c27697d6 | 548 | return dso->data.fd; |
cdd059d7 JO |
549 | } |
550 | ||
4bb11d01 NK |
551 | void dso__data_put_fd(struct dso *dso __maybe_unused) |
552 | { | |
553 | pthread_mutex_unlock(&dso__data_open_lock); | |
554 | } | |
555 | ||
288be943 AH |
556 | bool dso__data_status_seen(struct dso *dso, enum dso_data_status_seen by) |
557 | { | |
558 | u32 flag = 1 << by; | |
559 | ||
560 | if (dso->data.status_seen & flag) | |
561 | return true; | |
562 | ||
563 | dso->data.status_seen |= flag; | |
564 | ||
565 | return false; | |
566 | } | |
567 | ||
cdd059d7 | 568 | static void |
8e67b725 | 569 | dso_cache__free(struct dso *dso) |
cdd059d7 | 570 | { |
8e67b725 | 571 | struct rb_root *root = &dso->data.cache; |
cdd059d7 JO |
572 | struct rb_node *next = rb_first(root); |
573 | ||
8e67b725 | 574 | pthread_mutex_lock(&dso->lock); |
cdd059d7 JO |
575 | while (next) { |
576 | struct dso_cache *cache; | |
577 | ||
578 | cache = rb_entry(next, struct dso_cache, rb_node); | |
579 | next = rb_next(&cache->rb_node); | |
580 | rb_erase(&cache->rb_node, root); | |
581 | free(cache); | |
582 | } | |
8e67b725 | 583 | pthread_mutex_unlock(&dso->lock); |
cdd059d7 JO |
584 | } |
585 | ||
8e67b725 | 586 | static struct dso_cache *dso_cache__find(struct dso *dso, u64 offset) |
cdd059d7 | 587 | { |
8e67b725 | 588 | const struct rb_root *root = &dso->data.cache; |
3344996e ACM |
589 | struct rb_node * const *p = &root->rb_node; |
590 | const struct rb_node *parent = NULL; | |
cdd059d7 JO |
591 | struct dso_cache *cache; |
592 | ||
593 | while (*p != NULL) { | |
594 | u64 end; | |
595 | ||
596 | parent = *p; | |
597 | cache = rb_entry(parent, struct dso_cache, rb_node); | |
598 | end = cache->offset + DSO__DATA_CACHE_SIZE; | |
599 | ||
600 | if (offset < cache->offset) | |
601 | p = &(*p)->rb_left; | |
602 | else if (offset >= end) | |
603 | p = &(*p)->rb_right; | |
604 | else | |
605 | return cache; | |
606 | } | |
8e67b725 | 607 | |
cdd059d7 JO |
608 | return NULL; |
609 | } | |
610 | ||
8e67b725 NK |
611 | static struct dso_cache * |
612 | dso_cache__insert(struct dso *dso, struct dso_cache *new) | |
cdd059d7 | 613 | { |
8e67b725 | 614 | struct rb_root *root = &dso->data.cache; |
cdd059d7 JO |
615 | struct rb_node **p = &root->rb_node; |
616 | struct rb_node *parent = NULL; | |
617 | struct dso_cache *cache; | |
618 | u64 offset = new->offset; | |
619 | ||
8e67b725 | 620 | pthread_mutex_lock(&dso->lock); |
cdd059d7 JO |
621 | while (*p != NULL) { |
622 | u64 end; | |
623 | ||
624 | parent = *p; | |
625 | cache = rb_entry(parent, struct dso_cache, rb_node); | |
626 | end = cache->offset + DSO__DATA_CACHE_SIZE; | |
627 | ||
628 | if (offset < cache->offset) | |
629 | p = &(*p)->rb_left; | |
630 | else if (offset >= end) | |
631 | p = &(*p)->rb_right; | |
8e67b725 NK |
632 | else |
633 | goto out; | |
cdd059d7 JO |
634 | } |
635 | ||
636 | rb_link_node(&new->rb_node, parent, p); | |
637 | rb_insert_color(&new->rb_node, root); | |
8e67b725 NK |
638 | |
639 | cache = NULL; | |
640 | out: | |
641 | pthread_mutex_unlock(&dso->lock); | |
642 | return cache; | |
cdd059d7 JO |
643 | } |
644 | ||
645 | static ssize_t | |
646 | dso_cache__memcpy(struct dso_cache *cache, u64 offset, | |
647 | u8 *data, u64 size) | |
648 | { | |
649 | u64 cache_offset = offset - cache->offset; | |
650 | u64 cache_size = min(cache->size - cache_offset, size); | |
651 | ||
652 | memcpy(data, cache->data + cache_offset, cache_size); | |
653 | return cache_size; | |
654 | } | |
655 | ||
656 | static ssize_t | |
33bdedce NK |
657 | dso_cache__read(struct dso *dso, struct machine *machine, |
658 | u64 offset, u8 *data, ssize_t size) | |
cdd059d7 JO |
659 | { |
660 | struct dso_cache *cache; | |
8e67b725 | 661 | struct dso_cache *old; |
cdd059d7 | 662 | ssize_t ret; |
cdd059d7 JO |
663 | |
664 | do { | |
665 | u64 cache_offset; | |
666 | ||
cdd059d7 JO |
667 | cache = zalloc(sizeof(*cache) + DSO__DATA_CACHE_SIZE); |
668 | if (!cache) | |
33bdedce NK |
669 | return -ENOMEM; |
670 | ||
671 | pthread_mutex_lock(&dso__data_open_lock); | |
672 | ||
673 | /* | |
674 | * dso->data.fd might be closed if other thread opened another | |
675 | * file (dso) due to open file limit (RLIMIT_NOFILE). | |
676 | */ | |
71ff824a NK |
677 | try_to_open_dso(dso, machine); |
678 | ||
33bdedce | 679 | if (dso->data.fd < 0) { |
71ff824a NK |
680 | ret = -errno; |
681 | dso->data.status = DSO_DATA_STATUS_ERROR; | |
682 | break; | |
33bdedce | 683 | } |
cdd059d7 JO |
684 | |
685 | cache_offset = offset & DSO__DATA_CACHE_MASK; | |
cdd059d7 | 686 | |
c52686f9 | 687 | ret = pread(dso->data.fd, cache->data, DSO__DATA_CACHE_SIZE, cache_offset); |
cdd059d7 JO |
688 | if (ret <= 0) |
689 | break; | |
690 | ||
691 | cache->offset = cache_offset; | |
692 | cache->size = ret; | |
33bdedce NK |
693 | } while (0); |
694 | ||
695 | pthread_mutex_unlock(&dso__data_open_lock); | |
696 | ||
697 | if (ret > 0) { | |
8e67b725 NK |
698 | old = dso_cache__insert(dso, cache); |
699 | if (old) { | |
700 | /* we lose the race */ | |
701 | free(cache); | |
702 | cache = old; | |
703 | } | |
cdd059d7 JO |
704 | |
705 | ret = dso_cache__memcpy(cache, offset, data, size); | |
33bdedce | 706 | } |
cdd059d7 JO |
707 | |
708 | if (ret <= 0) | |
709 | free(cache); | |
710 | ||
cdd059d7 JO |
711 | return ret; |
712 | } | |
713 | ||
33bdedce NK |
714 | static ssize_t dso_cache_read(struct dso *dso, struct machine *machine, |
715 | u64 offset, u8 *data, ssize_t size) | |
cdd059d7 JO |
716 | { |
717 | struct dso_cache *cache; | |
718 | ||
8e67b725 | 719 | cache = dso_cache__find(dso, offset); |
cdd059d7 JO |
720 | if (cache) |
721 | return dso_cache__memcpy(cache, offset, data, size); | |
722 | else | |
33bdedce | 723 | return dso_cache__read(dso, machine, offset, data, size); |
cdd059d7 JO |
724 | } |
725 | ||
c1f9aa0a JO |
726 | /* |
727 | * Reads and caches dso data DSO__DATA_CACHE_SIZE size chunks | |
728 | * in the rb_tree. Any read to already cached data is served | |
729 | * by cached data. | |
730 | */ | |
33bdedce NK |
731 | static ssize_t cached_read(struct dso *dso, struct machine *machine, |
732 | u64 offset, u8 *data, ssize_t size) | |
cdd059d7 JO |
733 | { |
734 | ssize_t r = 0; | |
735 | u8 *p = data; | |
736 | ||
737 | do { | |
738 | ssize_t ret; | |
739 | ||
33bdedce | 740 | ret = dso_cache_read(dso, machine, offset, p, size); |
cdd059d7 JO |
741 | if (ret < 0) |
742 | return ret; | |
743 | ||
744 | /* Reached EOF, return what we have. */ | |
745 | if (!ret) | |
746 | break; | |
747 | ||
748 | BUG_ON(ret > size); | |
749 | ||
750 | r += ret; | |
751 | p += ret; | |
752 | offset += ret; | |
753 | size -= ret; | |
754 | ||
755 | } while (size); | |
756 | ||
757 | return r; | |
758 | } | |
759 | ||
33bdedce | 760 | static int data_file_size(struct dso *dso, struct machine *machine) |
c3fbd2a6 | 761 | { |
33bdedce | 762 | int ret = 0; |
c3fbd2a6 | 763 | struct stat st; |
6e81c74c | 764 | char sbuf[STRERR_BUFSIZE]; |
c3fbd2a6 | 765 | |
33bdedce NK |
766 | if (dso->data.file_size) |
767 | return 0; | |
768 | ||
71ff824a NK |
769 | if (dso->data.status == DSO_DATA_STATUS_ERROR) |
770 | return -1; | |
771 | ||
33bdedce NK |
772 | pthread_mutex_lock(&dso__data_open_lock); |
773 | ||
774 | /* | |
775 | * dso->data.fd might be closed if other thread opened another | |
776 | * file (dso) due to open file limit (RLIMIT_NOFILE). | |
777 | */ | |
71ff824a NK |
778 | try_to_open_dso(dso, machine); |
779 | ||
33bdedce | 780 | if (dso->data.fd < 0) { |
71ff824a NK |
781 | ret = -errno; |
782 | dso->data.status = DSO_DATA_STATUS_ERROR; | |
783 | goto out; | |
c3fbd2a6 JO |
784 | } |
785 | ||
33bdedce NK |
786 | if (fstat(dso->data.fd, &st) < 0) { |
787 | ret = -errno; | |
788 | pr_err("dso cache fstat failed: %s\n", | |
c8b5f2c9 | 789 | str_error_r(errno, sbuf, sizeof(sbuf))); |
33bdedce NK |
790 | dso->data.status = DSO_DATA_STATUS_ERROR; |
791 | goto out; | |
792 | } | |
793 | dso->data.file_size = st.st_size; | |
794 | ||
795 | out: | |
796 | pthread_mutex_unlock(&dso__data_open_lock); | |
797 | return ret; | |
c3fbd2a6 JO |
798 | } |
799 | ||
6d363459 AH |
800 | /** |
801 | * dso__data_size - Return dso data size | |
802 | * @dso: dso object | |
803 | * @machine: machine object | |
804 | * | |
805 | * Return: dso data size | |
806 | */ | |
807 | off_t dso__data_size(struct dso *dso, struct machine *machine) | |
808 | { | |
33bdedce | 809 | if (data_file_size(dso, machine)) |
6d363459 AH |
810 | return -1; |
811 | ||
812 | /* For now just estimate dso data size is close to file size */ | |
813 | return dso->data.file_size; | |
814 | } | |
815 | ||
33bdedce NK |
816 | static ssize_t data_read_offset(struct dso *dso, struct machine *machine, |
817 | u64 offset, u8 *data, ssize_t size) | |
c3fbd2a6 | 818 | { |
33bdedce | 819 | if (data_file_size(dso, machine)) |
c3fbd2a6 JO |
820 | return -1; |
821 | ||
822 | /* Check the offset sanity. */ | |
823 | if (offset > dso->data.file_size) | |
824 | return -1; | |
825 | ||
826 | if (offset + size < offset) | |
827 | return -1; | |
828 | ||
33bdedce | 829 | return cached_read(dso, machine, offset, data, size); |
c3fbd2a6 JO |
830 | } |
831 | ||
c1f9aa0a JO |
832 | /** |
833 | * dso__data_read_offset - Read data from dso file offset | |
834 | * @dso: dso object | |
835 | * @machine: machine object | |
836 | * @offset: file offset | |
837 | * @data: buffer to store data | |
838 | * @size: size of the @data buffer | |
839 | * | |
840 | * External interface to read data from dso file offset. Open | |
841 | * dso data file and use cached_read to get the data. | |
842 | */ | |
c3fbd2a6 JO |
843 | ssize_t dso__data_read_offset(struct dso *dso, struct machine *machine, |
844 | u64 offset, u8 *data, ssize_t size) | |
845 | { | |
33bdedce | 846 | if (dso->data.status == DSO_DATA_STATUS_ERROR) |
c3fbd2a6 JO |
847 | return -1; |
848 | ||
33bdedce | 849 | return data_read_offset(dso, machine, offset, data, size); |
c3fbd2a6 JO |
850 | } |
851 | ||
c1f9aa0a JO |
852 | /** |
853 | * dso__data_read_addr - Read data from dso address | |
854 | * @dso: dso object | |
855 | * @machine: machine object | |
856 | * @add: virtual memory address | |
857 | * @data: buffer to store data | |
858 | * @size: size of the @data buffer | |
859 | * | |
860 | * External interface to read data from dso address. | |
861 | */ | |
cdd059d7 JO |
862 | ssize_t dso__data_read_addr(struct dso *dso, struct map *map, |
863 | struct machine *machine, u64 addr, | |
864 | u8 *data, ssize_t size) | |
865 | { | |
866 | u64 offset = map->map_ip(map, addr); | |
867 | return dso__data_read_offset(dso, machine, offset, data, size); | |
868 | } | |
869 | ||
870 | struct map *dso__new_map(const char *name) | |
871 | { | |
872 | struct map *map = NULL; | |
873 | struct dso *dso = dso__new(name); | |
874 | ||
875 | if (dso) | |
876 | map = map__new2(0, dso, MAP__FUNCTION); | |
877 | ||
878 | return map; | |
879 | } | |
880 | ||
459ce518 ACM |
881 | struct dso *machine__findnew_kernel(struct machine *machine, const char *name, |
882 | const char *short_name, int dso_type) | |
cdd059d7 JO |
883 | { |
884 | /* | |
885 | * The kernel dso could be created by build_id processing. | |
886 | */ | |
aa7cc2ae | 887 | struct dso *dso = machine__findnew_dso(machine, name); |
cdd059d7 JO |
888 | |
889 | /* | |
890 | * We need to run this in all cases, since during the build_id | |
891 | * processing we had no idea this was the kernel dso. | |
892 | */ | |
893 | if (dso != NULL) { | |
58a98c9c | 894 | dso__set_short_name(dso, short_name, false); |
cdd059d7 JO |
895 | dso->kernel = dso_type; |
896 | } | |
897 | ||
898 | return dso; | |
899 | } | |
900 | ||
4598a0a6 WL |
901 | /* |
902 | * Find a matching entry and/or link current entry to RB tree. | |
903 | * Either one of the dso or name parameter must be non-NULL or the | |
904 | * function will not work. | |
905 | */ | |
e8807844 ACM |
906 | static struct dso *__dso__findlink_by_longname(struct rb_root *root, |
907 | struct dso *dso, const char *name) | |
4598a0a6 WL |
908 | { |
909 | struct rb_node **p = &root->rb_node; | |
910 | struct rb_node *parent = NULL; | |
911 | ||
912 | if (!name) | |
913 | name = dso->long_name; | |
914 | /* | |
915 | * Find node with the matching name | |
916 | */ | |
917 | while (*p) { | |
918 | struct dso *this = rb_entry(*p, struct dso, rb_node); | |
919 | int rc = strcmp(name, this->long_name); | |
920 | ||
921 | parent = *p; | |
922 | if (rc == 0) { | |
923 | /* | |
924 | * In case the new DSO is a duplicate of an existing | |
925 | * one, print an one-time warning & put the new entry | |
926 | * at the end of the list of duplicates. | |
927 | */ | |
928 | if (!dso || (dso == this)) | |
929 | return this; /* Find matching dso */ | |
930 | /* | |
931 | * The core kernel DSOs may have duplicated long name. | |
932 | * In this case, the short name should be different. | |
933 | * Comparing the short names to differentiate the DSOs. | |
934 | */ | |
935 | rc = strcmp(dso->short_name, this->short_name); | |
936 | if (rc == 0) { | |
937 | pr_err("Duplicated dso name: %s\n", name); | |
938 | return NULL; | |
939 | } | |
940 | } | |
941 | if (rc < 0) | |
942 | p = &parent->rb_left; | |
943 | else | |
944 | p = &parent->rb_right; | |
945 | } | |
946 | if (dso) { | |
947 | /* Add new node and rebalance tree */ | |
948 | rb_link_node(&dso->rb_node, parent, p); | |
949 | rb_insert_color(&dso->rb_node, root); | |
e266a753 | 950 | dso->root = root; |
4598a0a6 WL |
951 | } |
952 | return NULL; | |
953 | } | |
954 | ||
e8807844 ACM |
955 | static inline struct dso *__dso__find_by_longname(struct rb_root *root, |
956 | const char *name) | |
4598a0a6 | 957 | { |
e8807844 | 958 | return __dso__findlink_by_longname(root, NULL, name); |
4598a0a6 WL |
959 | } |
960 | ||
bf4414ae | 961 | void dso__set_long_name(struct dso *dso, const char *name, bool name_allocated) |
cdd059d7 | 962 | { |
e266a753 AH |
963 | struct rb_root *root = dso->root; |
964 | ||
cdd059d7 JO |
965 | if (name == NULL) |
966 | return; | |
7e155d4d ACM |
967 | |
968 | if (dso->long_name_allocated) | |
bf4414ae | 969 | free((char *)dso->long_name); |
7e155d4d | 970 | |
e266a753 AH |
971 | if (root) { |
972 | rb_erase(&dso->rb_node, root); | |
973 | /* | |
974 | * __dso__findlink_by_longname() isn't guaranteed to add it | |
975 | * back, so a clean removal is required here. | |
976 | */ | |
977 | RB_CLEAR_NODE(&dso->rb_node); | |
978 | dso->root = NULL; | |
979 | } | |
980 | ||
7e155d4d ACM |
981 | dso->long_name = name; |
982 | dso->long_name_len = strlen(name); | |
983 | dso->long_name_allocated = name_allocated; | |
e266a753 AH |
984 | |
985 | if (root) | |
986 | __dso__findlink_by_longname(root, dso, NULL); | |
cdd059d7 JO |
987 | } |
988 | ||
58a98c9c | 989 | void dso__set_short_name(struct dso *dso, const char *name, bool name_allocated) |
cdd059d7 JO |
990 | { |
991 | if (name == NULL) | |
992 | return; | |
58a98c9c AH |
993 | |
994 | if (dso->short_name_allocated) | |
995 | free((char *)dso->short_name); | |
996 | ||
997 | dso->short_name = name; | |
998 | dso->short_name_len = strlen(name); | |
999 | dso->short_name_allocated = name_allocated; | |
cdd059d7 JO |
1000 | } |
1001 | ||
1002 | static void dso__set_basename(struct dso *dso) | |
1003 | { | |
ac5e7f84 SE |
1004 | /* |
1005 | * basename() may modify path buffer, so we must pass | |
1006 | * a copy. | |
1007 | */ | |
1008 | char *base, *lname = strdup(dso->long_name); | |
1009 | ||
1010 | if (!lname) | |
1011 | return; | |
1012 | ||
1013 | /* | |
1014 | * basename() may return a pointer to internal | |
1015 | * storage which is reused in subsequent calls | |
1016 | * so copy the result. | |
1017 | */ | |
1018 | base = strdup(basename(lname)); | |
1019 | ||
1020 | free(lname); | |
1021 | ||
1022 | if (!base) | |
1023 | return; | |
1024 | ||
1025 | dso__set_short_name(dso, base, true); | |
cdd059d7 JO |
1026 | } |
1027 | ||
1028 | int dso__name_len(const struct dso *dso) | |
1029 | { | |
1030 | if (!dso) | |
1031 | return strlen("[unknown]"); | |
1032 | if (verbose) | |
1033 | return dso->long_name_len; | |
1034 | ||
1035 | return dso->short_name_len; | |
1036 | } | |
1037 | ||
1038 | bool dso__loaded(const struct dso *dso, enum map_type type) | |
1039 | { | |
1040 | return dso->loaded & (1 << type); | |
1041 | } | |
1042 | ||
1043 | bool dso__sorted_by_name(const struct dso *dso, enum map_type type) | |
1044 | { | |
1045 | return dso->sorted_by_name & (1 << type); | |
1046 | } | |
1047 | ||
1048 | void dso__set_sorted_by_name(struct dso *dso, enum map_type type) | |
1049 | { | |
1050 | dso->sorted_by_name |= (1 << type); | |
1051 | } | |
1052 | ||
1053 | struct dso *dso__new(const char *name) | |
1054 | { | |
1055 | struct dso *dso = calloc(1, sizeof(*dso) + strlen(name) + 1); | |
1056 | ||
1057 | if (dso != NULL) { | |
1058 | int i; | |
1059 | strcpy(dso->name, name); | |
7e155d4d | 1060 | dso__set_long_name(dso, dso->name, false); |
58a98c9c | 1061 | dso__set_short_name(dso, dso->name, false); |
cdd059d7 JO |
1062 | for (i = 0; i < MAP__NR_TYPES; ++i) |
1063 | dso->symbols[i] = dso->symbol_names[i] = RB_ROOT; | |
ca40e2af | 1064 | dso->data.cache = RB_ROOT; |
53fa8eaa | 1065 | dso->data.fd = -1; |
c27697d6 | 1066 | dso->data.status = DSO_DATA_STATUS_UNKNOWN; |
cdd059d7 | 1067 | dso->symtab_type = DSO_BINARY_TYPE__NOT_FOUND; |
5f70619d | 1068 | dso->binary_type = DSO_BINARY_TYPE__NOT_FOUND; |
c6d8f2a4 | 1069 | dso->is_64_bit = (sizeof(void *) == 8); |
cdd059d7 | 1070 | dso->loaded = 0; |
0131c4ec | 1071 | dso->rel = 0; |
cdd059d7 JO |
1072 | dso->sorted_by_name = 0; |
1073 | dso->has_build_id = 0; | |
2cc9d0ef | 1074 | dso->has_srcline = 1; |
906049c8 | 1075 | dso->a2l_fails = 1; |
cdd059d7 JO |
1076 | dso->kernel = DSO_TYPE_USER; |
1077 | dso->needs_swap = DSO_SWAP__UNSET; | |
4598a0a6 | 1078 | RB_CLEAR_NODE(&dso->rb_node); |
e266a753 | 1079 | dso->root = NULL; |
cdd059d7 | 1080 | INIT_LIST_HEAD(&dso->node); |
eba5102d | 1081 | INIT_LIST_HEAD(&dso->data.open_entry); |
4a936edc | 1082 | pthread_mutex_init(&dso->lock, NULL); |
d3a7c489 | 1083 | atomic_set(&dso->refcnt, 1); |
cdd059d7 JO |
1084 | } |
1085 | ||
1086 | return dso; | |
1087 | } | |
1088 | ||
1089 | void dso__delete(struct dso *dso) | |
1090 | { | |
1091 | int i; | |
4598a0a6 WL |
1092 | |
1093 | if (!RB_EMPTY_NODE(&dso->rb_node)) | |
1094 | pr_err("DSO %s is still in rbtree when being deleted!\n", | |
1095 | dso->long_name); | |
cdd059d7 JO |
1096 | for (i = 0; i < MAP__NR_TYPES; ++i) |
1097 | symbols__delete(&dso->symbols[i]); | |
ee021d42 ACM |
1098 | |
1099 | if (dso->short_name_allocated) { | |
04662523 | 1100 | zfree((char **)&dso->short_name); |
ee021d42 ACM |
1101 | dso->short_name_allocated = false; |
1102 | } | |
1103 | ||
1104 | if (dso->long_name_allocated) { | |
04662523 | 1105 | zfree((char **)&dso->long_name); |
ee021d42 ACM |
1106 | dso->long_name_allocated = false; |
1107 | } | |
1108 | ||
53fa8eaa | 1109 | dso__data_close(dso); |
cfe9174f | 1110 | auxtrace_cache__free(dso->auxtrace_cache); |
8e67b725 | 1111 | dso_cache__free(dso); |
454ff00f | 1112 | dso__free_a2l(dso); |
04662523 | 1113 | zfree(&dso->symsrc_filename); |
4a936edc | 1114 | pthread_mutex_destroy(&dso->lock); |
cdd059d7 JO |
1115 | free(dso); |
1116 | } | |
1117 | ||
d3a7c489 ACM |
1118 | struct dso *dso__get(struct dso *dso) |
1119 | { | |
1120 | if (dso) | |
1121 | atomic_inc(&dso->refcnt); | |
1122 | return dso; | |
1123 | } | |
1124 | ||
1125 | void dso__put(struct dso *dso) | |
1126 | { | |
1127 | if (dso && atomic_dec_and_test(&dso->refcnt)) | |
1128 | dso__delete(dso); | |
1129 | } | |
1130 | ||
cdd059d7 JO |
1131 | void dso__set_build_id(struct dso *dso, void *build_id) |
1132 | { | |
1133 | memcpy(dso->build_id, build_id, sizeof(dso->build_id)); | |
1134 | dso->has_build_id = 1; | |
1135 | } | |
1136 | ||
1137 | bool dso__build_id_equal(const struct dso *dso, u8 *build_id) | |
1138 | { | |
1139 | return memcmp(dso->build_id, build_id, sizeof(dso->build_id)) == 0; | |
1140 | } | |
1141 | ||
1142 | void dso__read_running_kernel_build_id(struct dso *dso, struct machine *machine) | |
1143 | { | |
1144 | char path[PATH_MAX]; | |
1145 | ||
1146 | if (machine__is_default_guest(machine)) | |
1147 | return; | |
1148 | sprintf(path, "%s/sys/kernel/notes", machine->root_dir); | |
1149 | if (sysfs__read_build_id(path, dso->build_id, | |
1150 | sizeof(dso->build_id)) == 0) | |
1151 | dso->has_build_id = true; | |
1152 | } | |
1153 | ||
1154 | int dso__kernel_module_get_build_id(struct dso *dso, | |
1155 | const char *root_dir) | |
1156 | { | |
1157 | char filename[PATH_MAX]; | |
1158 | /* | |
1159 | * kernel module short names are of the form "[module]" and | |
1160 | * we need just "module" here. | |
1161 | */ | |
1162 | const char *name = dso->short_name + 1; | |
1163 | ||
1164 | snprintf(filename, sizeof(filename), | |
1165 | "%s/sys/module/%.*s/notes/.note.gnu.build-id", | |
1166 | root_dir, (int)strlen(name) - 1, name); | |
1167 | ||
1168 | if (sysfs__read_build_id(filename, dso->build_id, | |
1169 | sizeof(dso->build_id)) == 0) | |
1170 | dso->has_build_id = true; | |
1171 | ||
1172 | return 0; | |
1173 | } | |
1174 | ||
1175 | bool __dsos__read_build_ids(struct list_head *head, bool with_hits) | |
1176 | { | |
1177 | bool have_build_id = false; | |
1178 | struct dso *pos; | |
1179 | ||
1180 | list_for_each_entry(pos, head, node) { | |
6ae98ba6 | 1181 | if (with_hits && !pos->hit && !dso__is_vdso(pos)) |
cdd059d7 JO |
1182 | continue; |
1183 | if (pos->has_build_id) { | |
1184 | have_build_id = true; | |
1185 | continue; | |
1186 | } | |
1187 | if (filename__read_build_id(pos->long_name, pos->build_id, | |
1188 | sizeof(pos->build_id)) > 0) { | |
1189 | have_build_id = true; | |
1190 | pos->has_build_id = true; | |
1191 | } | |
1192 | } | |
1193 | ||
1194 | return have_build_id; | |
1195 | } | |
1196 | ||
e8807844 | 1197 | void __dsos__add(struct dsos *dsos, struct dso *dso) |
cdd059d7 | 1198 | { |
8fa7d87f | 1199 | list_add_tail(&dso->node, &dsos->head); |
e8807844 | 1200 | __dso__findlink_by_longname(&dsos->root, dso, NULL); |
d3a7c489 ACM |
1201 | /* |
1202 | * It is now in the linked list, grab a reference, then garbage collect | |
1203 | * this when needing memory, by looking at LRU dso instances in the | |
1204 | * list with atomic_read(&dso->refcnt) == 1, i.e. no references | |
1205 | * anywhere besides the one for the list, do, under a lock for the | |
1206 | * list: remove it from the list, then a dso__put(), that probably will | |
1207 | * be the last and will then call dso__delete(), end of life. | |
1208 | * | |
1209 | * That, or at the end of the 'struct machine' lifetime, when all | |
1210 | * 'struct dso' instances will be removed from the list, in | |
1211 | * dsos__exit(), if they have no other reference from some other data | |
1212 | * structure. | |
1213 | * | |
1214 | * E.g.: after processing a 'perf.data' file and storing references | |
1215 | * to objects instantiated while processing events, we will have | |
1216 | * references to the 'thread', 'map', 'dso' structs all from 'struct | |
1217 | * hist_entry' instances, but we may not need anything not referenced, | |
1218 | * so we might as well call machines__exit()/machines__delete() and | |
1219 | * garbage collect it. | |
1220 | */ | |
1221 | dso__get(dso); | |
e8807844 ACM |
1222 | } |
1223 | ||
1224 | void dsos__add(struct dsos *dsos, struct dso *dso) | |
1225 | { | |
1226 | pthread_rwlock_wrlock(&dsos->lock); | |
1227 | __dsos__add(dsos, dso); | |
1228 | pthread_rwlock_unlock(&dsos->lock); | |
cdd059d7 JO |
1229 | } |
1230 | ||
e8807844 | 1231 | struct dso *__dsos__find(struct dsos *dsos, const char *name, bool cmp_short) |
cdd059d7 JO |
1232 | { |
1233 | struct dso *pos; | |
1234 | ||
f9ceffb6 | 1235 | if (cmp_short) { |
8fa7d87f | 1236 | list_for_each_entry(pos, &dsos->head, node) |
f9ceffb6 WL |
1237 | if (strcmp(pos->short_name, name) == 0) |
1238 | return pos; | |
1239 | return NULL; | |
1240 | } | |
e8807844 | 1241 | return __dso__find_by_longname(&dsos->root, name); |
cdd059d7 JO |
1242 | } |
1243 | ||
e8807844 ACM |
1244 | struct dso *dsos__find(struct dsos *dsos, const char *name, bool cmp_short) |
1245 | { | |
1246 | struct dso *dso; | |
1247 | pthread_rwlock_rdlock(&dsos->lock); | |
1248 | dso = __dsos__find(dsos, name, cmp_short); | |
1249 | pthread_rwlock_unlock(&dsos->lock); | |
1250 | return dso; | |
1251 | } | |
1252 | ||
1253 | struct dso *__dsos__addnew(struct dsos *dsos, const char *name) | |
cdd059d7 | 1254 | { |
701d8d7f | 1255 | struct dso *dso = dso__new(name); |
cdd059d7 | 1256 | |
701d8d7f | 1257 | if (dso != NULL) { |
e8807844 | 1258 | __dsos__add(dsos, dso); |
701d8d7f | 1259 | dso__set_basename(dso); |
82de26ab MH |
1260 | /* Put dso here because __dsos_add already got it */ |
1261 | dso__put(dso); | |
cdd059d7 | 1262 | } |
cdd059d7 JO |
1263 | return dso; |
1264 | } | |
1265 | ||
701d8d7f JO |
1266 | struct dso *__dsos__findnew(struct dsos *dsos, const char *name) |
1267 | { | |
e8807844 ACM |
1268 | struct dso *dso = __dsos__find(dsos, name, false); |
1269 | ||
1270 | return dso ? dso : __dsos__addnew(dsos, name); | |
1271 | } | |
701d8d7f | 1272 | |
e8807844 ACM |
1273 | struct dso *dsos__findnew(struct dsos *dsos, const char *name) |
1274 | { | |
1275 | struct dso *dso; | |
1276 | pthread_rwlock_wrlock(&dsos->lock); | |
d3a7c489 | 1277 | dso = dso__get(__dsos__findnew(dsos, name)); |
e8807844 ACM |
1278 | pthread_rwlock_unlock(&dsos->lock); |
1279 | return dso; | |
701d8d7f JO |
1280 | } |
1281 | ||
cdd059d7 | 1282 | size_t __dsos__fprintf_buildid(struct list_head *head, FILE *fp, |
417c2ff6 | 1283 | bool (skip)(struct dso *dso, int parm), int parm) |
cdd059d7 JO |
1284 | { |
1285 | struct dso *pos; | |
1286 | size_t ret = 0; | |
1287 | ||
1288 | list_for_each_entry(pos, head, node) { | |
417c2ff6 | 1289 | if (skip && skip(pos, parm)) |
cdd059d7 JO |
1290 | continue; |
1291 | ret += dso__fprintf_buildid(pos, fp); | |
1292 | ret += fprintf(fp, " %s\n", pos->long_name); | |
1293 | } | |
1294 | return ret; | |
1295 | } | |
1296 | ||
1297 | size_t __dsos__fprintf(struct list_head *head, FILE *fp) | |
1298 | { | |
1299 | struct dso *pos; | |
1300 | size_t ret = 0; | |
1301 | ||
1302 | list_for_each_entry(pos, head, node) { | |
1303 | int i; | |
1304 | for (i = 0; i < MAP__NR_TYPES; ++i) | |
1305 | ret += dso__fprintf(pos, i, fp); | |
1306 | } | |
1307 | ||
1308 | return ret; | |
1309 | } | |
1310 | ||
1311 | size_t dso__fprintf_buildid(struct dso *dso, FILE *fp) | |
1312 | { | |
b5d8bbe8 | 1313 | char sbuild_id[SBUILD_ID_SIZE]; |
cdd059d7 JO |
1314 | |
1315 | build_id__sprintf(dso->build_id, sizeof(dso->build_id), sbuild_id); | |
1316 | return fprintf(fp, "%s", sbuild_id); | |
1317 | } | |
1318 | ||
1319 | size_t dso__fprintf(struct dso *dso, enum map_type type, FILE *fp) | |
1320 | { | |
1321 | struct rb_node *nd; | |
1322 | size_t ret = fprintf(fp, "dso: %s (", dso->short_name); | |
1323 | ||
1324 | if (dso->short_name != dso->long_name) | |
1325 | ret += fprintf(fp, "%s, ", dso->long_name); | |
1326 | ret += fprintf(fp, "%s, %sloaded, ", map_type__name[type], | |
919d590f | 1327 | dso__loaded(dso, type) ? "" : "NOT "); |
cdd059d7 JO |
1328 | ret += dso__fprintf_buildid(dso, fp); |
1329 | ret += fprintf(fp, ")\n"); | |
1330 | for (nd = rb_first(&dso->symbols[type]); nd; nd = rb_next(nd)) { | |
1331 | struct symbol *pos = rb_entry(nd, struct symbol, rb_node); | |
1332 | ret += symbol__fprintf(pos, fp); | |
1333 | } | |
1334 | ||
1335 | return ret; | |
1336 | } | |
2b5b8bb2 AH |
1337 | |
1338 | enum dso_type dso__type(struct dso *dso, struct machine *machine) | |
1339 | { | |
1340 | int fd; | |
4bb11d01 | 1341 | enum dso_type type = DSO__TYPE_UNKNOWN; |
2b5b8bb2 | 1342 | |
4bb11d01 NK |
1343 | fd = dso__data_get_fd(dso, machine); |
1344 | if (fd >= 0) { | |
1345 | type = dso__type_fd(fd); | |
1346 | dso__data_put_fd(dso); | |
1347 | } | |
2b5b8bb2 | 1348 | |
4bb11d01 | 1349 | return type; |
2b5b8bb2 | 1350 | } |
18425f13 ACM |
1351 | |
1352 | int dso__strerror_load(struct dso *dso, char *buf, size_t buflen) | |
1353 | { | |
1354 | int idx, errnum = dso->load_errno; | |
1355 | /* | |
1356 | * This must have a same ordering as the enum dso_load_errno. | |
1357 | */ | |
1358 | static const char *dso_load__error_str[] = { | |
1359 | "Internal tools/perf/ library error", | |
1360 | "Invalid ELF file", | |
1361 | "Can not read build id", | |
1362 | "Mismatching build id", | |
1363 | "Decompression failure", | |
1364 | }; | |
1365 | ||
1366 | BUG_ON(buflen == 0); | |
1367 | ||
1368 | if (errnum >= 0) { | |
c8b5f2c9 | 1369 | const char *err = str_error_r(errnum, buf, buflen); |
18425f13 ACM |
1370 | |
1371 | if (err != buf) | |
1372 | scnprintf(buf, buflen, "%s", err); | |
1373 | ||
1374 | return 0; | |
1375 | } | |
1376 | ||
1377 | if (errnum < __DSO_LOAD_ERRNO__START || errnum >= __DSO_LOAD_ERRNO__END) | |
1378 | return -1; | |
1379 | ||
1380 | idx = errnum - __DSO_LOAD_ERRNO__START; | |
1381 | scnprintf(buf, buflen, "%s", dso_load__error_str[idx]); | |
1382 | return 0; | |
1383 | } |