aboutsummaryrefslogtreecommitdiffstats
path: root/tools/perf/util/header.c
diff options
context:
space:
mode:
Diffstat (limited to 'tools/perf/util/header.c')
-rw-r--r--tools/perf/util/header.c72
1 files changed, 63 insertions, 9 deletions
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 1b65fed0dd2d..2bb2bdb1f456 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -231,32 +231,29 @@ static int dsos__write_buildid_table(int fd)
231 return err; 231 return err;
232} 232}
233 233
234static int dso__cache_build_id(struct dso *self, const char *debugdir) 234int build_id_cache__add_s(const char *sbuild_id, const char *debugdir,
235 const char *name, bool is_kallsyms)
235{ 236{
236 const size_t size = PATH_MAX; 237 const size_t size = PATH_MAX;
237 char *filename = malloc(size), 238 char *filename = malloc(size),
238 *linkname = malloc(size), *targetname, *sbuild_id; 239 *linkname = malloc(size), *targetname;
239 int len, err = -1; 240 int len, err = -1;
240 bool is_kallsyms = self->kernel && self->long_name[0] != '/';
241 241
242 if (filename == NULL || linkname == NULL) 242 if (filename == NULL || linkname == NULL)
243 goto out_free; 243 goto out_free;
244 244
245 len = snprintf(filename, size, "%s%s%s", 245 len = snprintf(filename, size, "%s%s%s",
246 debugdir, is_kallsyms ? "/" : "", self->long_name); 246 debugdir, is_kallsyms ? "/" : "", name);
247 if (mkdir_p(filename, 0755)) 247 if (mkdir_p(filename, 0755))
248 goto out_free; 248 goto out_free;
249 249
250 len += snprintf(filename + len, sizeof(filename) - len, "/"); 250 snprintf(filename + len, sizeof(filename) - len, "/%s", sbuild_id);
251 sbuild_id = filename + len;
252 build_id__sprintf(self->build_id, sizeof(self->build_id), sbuild_id);
253 251
254 if (access(filename, F_OK)) { 252 if (access(filename, F_OK)) {
255 if (is_kallsyms) { 253 if (is_kallsyms) {
256 if (copyfile("/proc/kallsyms", filename)) 254 if (copyfile("/proc/kallsyms", filename))
257 goto out_free; 255 goto out_free;
258 } else if (link(self->long_name, filename) && 256 } else if (link(name, filename) && copyfile(name, filename))
259 copyfile(self->long_name, filename))
260 goto out_free; 257 goto out_free;
261 } 258 }
262 259
@@ -278,6 +275,63 @@ out_free:
278 return err; 275 return err;
279} 276}
280 277
278static int build_id_cache__add_b(const u8 *build_id, size_t build_id_size,
279 const char *name, const char *debugdir,
280 bool is_kallsyms)
281{
282 char sbuild_id[BUILD_ID_SIZE * 2 + 1];
283
284 build_id__sprintf(build_id, build_id_size, sbuild_id);
285
286 return build_id_cache__add_s(sbuild_id, debugdir, name, is_kallsyms);
287}
288
289int build_id_cache__remove_s(const char *sbuild_id, const char *debugdir)
290{
291 const size_t size = PATH_MAX;
292 char *filename = malloc(size),
293 *linkname = malloc(size);
294 int err = -1;
295
296 if (filename == NULL || linkname == NULL)
297 goto out_free;
298
299 snprintf(linkname, size, "%s/.build-id/%.2s/%s",
300 debugdir, sbuild_id, sbuild_id + 2);
301
302 if (access(linkname, F_OK))
303 goto out_free;
304
305 if (readlink(linkname, filename, size) < 0)
306 goto out_free;
307
308 if (unlink(linkname))
309 goto out_free;
310
311 /*
312 * Since the link is relative, we must make it absolute:
313 */
314 snprintf(linkname, size, "%s/.build-id/%.2s/%s",
315 debugdir, sbuild_id, filename);
316
317 if (unlink(linkname))
318 goto out_free;
319
320 err = 0;
321out_free:
322 free(filename);
323 free(linkname);
324 return err;
325}
326
327static int dso__cache_build_id(struct dso *self, const char *debugdir)
328{
329 bool is_kallsyms = self->kernel && self->long_name[0] != '/';
330
331 return build_id_cache__add_b(self->build_id, sizeof(self->build_id),
332 self->long_name, debugdir, is_kallsyms);
333}
334
281static int __dsos__cache_build_ids(struct list_head *head, const char *debugdir) 335static int __dsos__cache_build_ids(struct list_head *head, const char *debugdir)
282{ 336{
283 struct dso *pos; 337 struct dso *pos;