Commit | Line | Data |
---|---|---|
ef12a141 ACM |
1 | /* |
2 | * builtin-buildid-cache.c | |
3 | * | |
4 | * Builtin buildid-cache command: Manages build-id cache | |
5 | * | |
6 | * Copyright (C) 2010, Red Hat Inc. | |
7 | * Copyright (C) 2010, Arnaldo Carvalho de Melo <acme@redhat.com> | |
8 | */ | |
fc1b691d AH |
9 | #include <sys/types.h> |
10 | #include <sys/time.h> | |
11 | #include <time.h> | |
12 | #include <dirent.h> | |
13 | #include <unistd.h> | |
ef12a141 ACM |
14 | #include "builtin.h" |
15 | #include "perf.h" | |
16 | #include "util/cache.h" | |
17 | #include "util/debug.h" | |
18 | #include "util/header.h" | |
19 | #include "util/parse-options.h" | |
20 | #include "util/strlist.h" | |
ebb296c2 | 21 | #include "util/build-id.h" |
fbb6976c | 22 | #include "util/session.h" |
4383db88 | 23 | #include "util/symbol.h" |
ef12a141 | 24 | |
fc1b691d AH |
25 | static int build_id_cache__kcore_buildid(const char *proc_dir, char *sbuildid) |
26 | { | |
27 | char root_dir[PATH_MAX]; | |
fc1b691d AH |
28 | char *p; |
29 | ||
30 | strlcpy(root_dir, proc_dir, sizeof(root_dir)); | |
31 | ||
32 | p = strrchr(root_dir, '/'); | |
33 | if (!p) | |
34 | return -1; | |
35 | *p = '\0'; | |
0b5a7935 | 36 | return sysfs__sprintf_build_id(root_dir, sbuildid); |
fc1b691d AH |
37 | } |
38 | ||
39 | static int build_id_cache__kcore_dir(char *dir, size_t sz) | |
40 | { | |
41 | struct timeval tv; | |
42 | struct tm tm; | |
43 | char dt[32]; | |
44 | ||
45 | if (gettimeofday(&tv, NULL) || !localtime_r(&tv.tv_sec, &tm)) | |
46 | return -1; | |
47 | ||
48 | if (!strftime(dt, sizeof(dt), "%Y%m%d%H%M%S", &tm)) | |
49 | return -1; | |
50 | ||
51 | scnprintf(dir, sz, "%s%02u", dt, (unsigned)tv.tv_usec / 10000); | |
52 | ||
53 | return 0; | |
54 | } | |
55 | ||
d3b70220 AH |
56 | static bool same_kallsyms_reloc(const char *from_dir, char *to_dir) |
57 | { | |
58 | char from[PATH_MAX]; | |
59 | char to[PATH_MAX]; | |
60 | const char *name; | |
61 | u64 addr1 = 0, addr2 = 0; | |
62 | int i; | |
63 | ||
64 | scnprintf(from, sizeof(from), "%s/kallsyms", from_dir); | |
65 | scnprintf(to, sizeof(to), "%s/kallsyms", to_dir); | |
66 | ||
67 | for (i = 0; (name = ref_reloc_sym_names[i]) != NULL; i++) { | |
68 | addr1 = kallsyms__get_function_start(from, name); | |
69 | if (addr1) | |
70 | break; | |
71 | } | |
72 | ||
73 | if (name) | |
74 | addr2 = kallsyms__get_function_start(to, name); | |
75 | ||
76 | return addr1 == addr2; | |
77 | } | |
78 | ||
fc1b691d AH |
79 | static int build_id_cache__kcore_existing(const char *from_dir, char *to_dir, |
80 | size_t to_dir_sz) | |
81 | { | |
82 | char from[PATH_MAX]; | |
83 | char to[PATH_MAX]; | |
d3b70220 | 84 | char to_subdir[PATH_MAX]; |
fc1b691d AH |
85 | struct dirent *dent; |
86 | int ret = -1; | |
87 | DIR *d; | |
88 | ||
89 | d = opendir(to_dir); | |
90 | if (!d) | |
91 | return -1; | |
92 | ||
93 | scnprintf(from, sizeof(from), "%s/modules", from_dir); | |
94 | ||
95 | while (1) { | |
96 | dent = readdir(d); | |
97 | if (!dent) | |
98 | break; | |
99 | if (dent->d_type != DT_DIR) | |
100 | continue; | |
101 | scnprintf(to, sizeof(to), "%s/%s/modules", to_dir, | |
102 | dent->d_name); | |
d3b70220 AH |
103 | scnprintf(to_subdir, sizeof(to_subdir), "%s/%s", |
104 | to_dir, dent->d_name); | |
105 | if (!compare_proc_modules(from, to) && | |
106 | same_kallsyms_reloc(from_dir, to_subdir)) { | |
107 | strlcpy(to_dir, to_subdir, to_dir_sz); | |
fc1b691d AH |
108 | ret = 0; |
109 | break; | |
110 | } | |
111 | } | |
112 | ||
113 | closedir(d); | |
114 | ||
115 | return ret; | |
116 | } | |
117 | ||
e35f7362 | 118 | static int build_id_cache__add_kcore(const char *filename, bool force) |
fc1b691d | 119 | { |
d77fac7f | 120 | char dir[32], sbuildid[SBUILD_ID_SIZE]; |
fc1b691d AH |
121 | char from_dir[PATH_MAX], to_dir[PATH_MAX]; |
122 | char *p; | |
123 | ||
124 | strlcpy(from_dir, filename, sizeof(from_dir)); | |
125 | ||
126 | p = strrchr(from_dir, '/'); | |
127 | if (!p || strcmp(p + 1, "kcore")) | |
128 | return -1; | |
129 | *p = '\0'; | |
130 | ||
0b5a7935 | 131 | if (build_id_cache__kcore_buildid(from_dir, sbuildid) < 0) |
fc1b691d AH |
132 | return -1; |
133 | ||
134 | scnprintf(to_dir, sizeof(to_dir), "%s/[kernel.kcore]/%s", | |
e35f7362 | 135 | buildid_dir, sbuildid); |
fc1b691d | 136 | |
5173fbb8 AH |
137 | if (!force && |
138 | !build_id_cache__kcore_existing(from_dir, to_dir, sizeof(to_dir))) { | |
fc1b691d AH |
139 | pr_debug("same kcore found in %s\n", to_dir); |
140 | return 0; | |
141 | } | |
142 | ||
143 | if (build_id_cache__kcore_dir(dir, sizeof(dir))) | |
144 | return -1; | |
145 | ||
146 | scnprintf(to_dir, sizeof(to_dir), "%s/[kernel.kcore]/%s/%s", | |
e35f7362 | 147 | buildid_dir, sbuildid, dir); |
fc1b691d AH |
148 | |
149 | if (mkdir_p(to_dir, 0755)) | |
150 | return -1; | |
151 | ||
152 | if (kcore_copy(from_dir, to_dir)) { | |
153 | /* Remove YYYYmmddHHMMSShh directory */ | |
154 | if (!rmdir(to_dir)) { | |
155 | p = strrchr(to_dir, '/'); | |
156 | if (p) | |
157 | *p = '\0'; | |
158 | /* Try to remove buildid directory */ | |
159 | if (!rmdir(to_dir)) { | |
160 | p = strrchr(to_dir, '/'); | |
161 | if (p) | |
162 | *p = '\0'; | |
163 | /* Try to remove [kernel.kcore] directory */ | |
164 | rmdir(to_dir); | |
165 | } | |
166 | } | |
167 | return -1; | |
168 | } | |
169 | ||
170 | pr_debug("kcore added to build-id cache directory %s\n", to_dir); | |
171 | ||
172 | return 0; | |
173 | } | |
174 | ||
e35f7362 | 175 | static int build_id_cache__add_file(const char *filename) |
ef12a141 | 176 | { |
d77fac7f | 177 | char sbuild_id[SBUILD_ID_SIZE]; |
ef12a141 ACM |
178 | u8 build_id[BUILD_ID_SIZE]; |
179 | int err; | |
180 | ||
181 | if (filename__read_build_id(filename, &build_id, sizeof(build_id)) < 0) { | |
182 | pr_debug("Couldn't read a build-id in %s\n", filename); | |
183 | return -1; | |
184 | } | |
185 | ||
186 | build_id__sprintf(build_id, sizeof(build_id), sbuild_id); | |
e35f7362 | 187 | err = build_id_cache__add_s(sbuild_id, filename, |
7dbf4dcf | 188 | false, false); |
cc169c7c MH |
189 | pr_debug("Adding %s %s: %s\n", sbuild_id, filename, |
190 | err ? "FAIL" : "Ok"); | |
ef12a141 ACM |
191 | return err; |
192 | } | |
193 | ||
e35f7362 | 194 | static int build_id_cache__remove_file(const char *filename) |
ef12a141 ACM |
195 | { |
196 | u8 build_id[BUILD_ID_SIZE]; | |
d77fac7f | 197 | char sbuild_id[SBUILD_ID_SIZE]; |
ef12a141 ACM |
198 | |
199 | int err; | |
200 | ||
201 | if (filename__read_build_id(filename, &build_id, sizeof(build_id)) < 0) { | |
202 | pr_debug("Couldn't read a build-id in %s\n", filename); | |
203 | return -1; | |
204 | } | |
205 | ||
206 | build_id__sprintf(build_id, sizeof(build_id), sbuild_id); | |
e35f7362 | 207 | err = build_id_cache__remove_s(sbuild_id); |
cc169c7c MH |
208 | pr_debug("Removing %s %s: %s\n", sbuild_id, filename, |
209 | err ? "FAIL" : "Ok"); | |
ef12a141 ACM |
210 | |
211 | return err; | |
212 | } | |
213 | ||
8d8c8e4c MH |
214 | static int build_id_cache__purge_path(const char *pathname) |
215 | { | |
216 | struct strlist *list; | |
217 | struct str_node *pos; | |
218 | int err; | |
219 | ||
220 | err = build_id_cache__list_build_ids(pathname, &list); | |
221 | if (err) | |
222 | goto out; | |
223 | ||
224 | strlist__for_each(pos, list) { | |
225 | err = build_id_cache__remove_s(pos->s); | |
cc169c7c MH |
226 | pr_debug("Removing %s %s: %s\n", pos->s, pathname, |
227 | err ? "FAIL" : "Ok"); | |
8d8c8e4c MH |
228 | if (err) |
229 | break; | |
230 | } | |
231 | strlist__delete(list); | |
232 | ||
233 | out: | |
cc169c7c | 234 | pr_debug("Purging %s: %s\n", pathname, err ? "FAIL" : "Ok"); |
8d8c8e4c MH |
235 | |
236 | return err; | |
237 | } | |
238 | ||
fbb6976c ACM |
239 | static bool dso__missing_buildid_cache(struct dso *dso, int parm __maybe_unused) |
240 | { | |
241 | char filename[PATH_MAX]; | |
242 | u8 build_id[BUILD_ID_SIZE]; | |
243 | ||
244 | if (dso__build_id_filename(dso, filename, sizeof(filename)) && | |
245 | filename__read_build_id(filename, build_id, | |
246 | sizeof(build_id)) != sizeof(build_id)) { | |
247 | if (errno == ENOENT) | |
248 | return false; | |
249 | ||
48000a1a | 250 | pr_warning("Problems with %s file, consider removing it from the cache\n", |
fbb6976c ACM |
251 | filename); |
252 | } else if (memcmp(dso->build_id, build_id, sizeof(dso->build_id))) { | |
48000a1a | 253 | pr_warning("Problems with %s file, consider removing it from the cache\n", |
fbb6976c ACM |
254 | filename); |
255 | } | |
256 | ||
257 | return true; | |
258 | } | |
259 | ||
e3ed75bb | 260 | static int build_id_cache__fprintf_missing(struct perf_session *session, FILE *fp) |
fbb6976c | 261 | { |
fbb6976c | 262 | perf_session__fprintf_dsos_buildid(session, fp, dso__missing_buildid_cache, 0); |
fbb6976c ACM |
263 | return 0; |
264 | } | |
265 | ||
e35f7362 | 266 | static int build_id_cache__update_file(const char *filename) |
eeb49845 NK |
267 | { |
268 | u8 build_id[BUILD_ID_SIZE]; | |
d77fac7f | 269 | char sbuild_id[SBUILD_ID_SIZE]; |
eeb49845 | 270 | |
a50d11a1 | 271 | int err = 0; |
eeb49845 NK |
272 | |
273 | if (filename__read_build_id(filename, &build_id, sizeof(build_id)) < 0) { | |
274 | pr_debug("Couldn't read a build-id in %s\n", filename); | |
275 | return -1; | |
276 | } | |
277 | ||
278 | build_id__sprintf(build_id, sizeof(build_id), sbuild_id); | |
a50d11a1 MH |
279 | if (build_id_cache__cached(sbuild_id)) |
280 | err = build_id_cache__remove_s(sbuild_id); | |
281 | ||
e35f7362 MH |
282 | if (!err) |
283 | err = build_id_cache__add_s(sbuild_id, filename, false, false); | |
284 | ||
cc169c7c MH |
285 | pr_debug("Updating %s %s: %s\n", sbuild_id, filename, |
286 | err ? "FAIL" : "Ok"); | |
eeb49845 NK |
287 | |
288 | return err; | |
289 | } | |
290 | ||
472cc83c ACM |
291 | int cmd_buildid_cache(int argc, const char **argv, |
292 | const char *prefix __maybe_unused) | |
ef12a141 ACM |
293 | { |
294 | struct strlist *list; | |
295 | struct str_node *pos; | |
fbb6976c ACM |
296 | int ret = 0; |
297 | bool force = false; | |
472cc83c | 298 | char const *add_name_list_str = NULL, |
fbb6976c | 299 | *remove_name_list_str = NULL, |
8d8c8e4c | 300 | *purge_name_list_str = NULL, |
eeb49845 | 301 | *missing_filename = NULL, |
fc1b691d | 302 | *update_name_list_str = NULL, |
eec5a688 | 303 | *kcore_filename = NULL; |
340481ad | 304 | char sbuf[STRERR_BUFSIZE]; |
eeb49845 | 305 | |
e3ed75bb NK |
306 | struct perf_data_file file = { |
307 | .mode = PERF_DATA_MODE_READ, | |
308 | }; | |
309 | struct perf_session *session = NULL; | |
310 | ||
472cc83c ACM |
311 | const struct option buildid_cache_options[] = { |
312 | OPT_STRING('a', "add", &add_name_list_str, | |
313 | "file list", "file(s) to add"), | |
fc1b691d AH |
314 | OPT_STRING('k', "kcore", &kcore_filename, |
315 | "file", "kcore file to add"), | |
472cc83c ACM |
316 | OPT_STRING('r', "remove", &remove_name_list_str, "file list", |
317 | "file(s) to remove"), | |
8d8c8e4c MH |
318 | OPT_STRING('p', "purge", &purge_name_list_str, "path list", |
319 | "path(s) to remove (remove old caches too)"), | |
fbb6976c ACM |
320 | OPT_STRING('M', "missing", &missing_filename, "file", |
321 | "to find missing build ids in the cache"), | |
322 | OPT_BOOLEAN('f', "force", &force, "don't complain, do it"), | |
eeb49845 NK |
323 | OPT_STRING('u', "update", &update_name_list_str, "file list", |
324 | "file(s) to update"), | |
472cc83c ACM |
325 | OPT_INCR('v', "verbose", &verbose, "be more verbose"), |
326 | OPT_END() | |
327 | }; | |
328 | const char * const buildid_cache_usage[] = { | |
329 | "perf buildid-cache [<options>]", | |
330 | NULL | |
331 | }; | |
332 | ||
333 | argc = parse_options(argc, argv, buildid_cache_options, | |
334 | buildid_cache_usage, 0); | |
335 | ||
0497d0a8 MH |
336 | if (argc || (!add_name_list_str && !kcore_filename && |
337 | !remove_name_list_str && !purge_name_list_str && | |
338 | !missing_filename && !update_name_list_str)) | |
339 | usage_with_options(buildid_cache_usage, buildid_cache_options); | |
340 | ||
e3ed75bb NK |
341 | if (missing_filename) { |
342 | file.path = missing_filename; | |
343 | file.force = force; | |
344 | ||
345 | session = perf_session__new(&file, false, NULL); | |
346 | if (session == NULL) | |
347 | return -1; | |
348 | } | |
349 | ||
0a7e6d1b | 350 | if (symbol__init(session ? &session->header.env : NULL) < 0) |
e3ed75bb | 351 | goto out; |
472cc83c ACM |
352 | |
353 | setup_pager(); | |
ef12a141 | 354 | |
ef12a141 | 355 | if (add_name_list_str) { |
4a77e218 | 356 | list = strlist__new(add_name_list_str, NULL); |
ef12a141 ACM |
357 | if (list) { |
358 | strlist__for_each(pos, list) | |
e35f7362 | 359 | if (build_id_cache__add_file(pos->s)) { |
ef12a141 ACM |
360 | if (errno == EEXIST) { |
361 | pr_debug("%s already in the cache\n", | |
362 | pos->s); | |
363 | continue; | |
364 | } | |
365 | pr_warning("Couldn't add %s: %s\n", | |
340481ad | 366 | pos->s, strerror_r(errno, sbuf, sizeof(sbuf))); |
ef12a141 ACM |
367 | } |
368 | ||
369 | strlist__delete(list); | |
370 | } | |
371 | } | |
372 | ||
373 | if (remove_name_list_str) { | |
4a77e218 | 374 | list = strlist__new(remove_name_list_str, NULL); |
ef12a141 ACM |
375 | if (list) { |
376 | strlist__for_each(pos, list) | |
e35f7362 | 377 | if (build_id_cache__remove_file(pos->s)) { |
ef12a141 ACM |
378 | if (errno == ENOENT) { |
379 | pr_debug("%s wasn't in the cache\n", | |
380 | pos->s); | |
381 | continue; | |
382 | } | |
383 | pr_warning("Couldn't remove %s: %s\n", | |
340481ad | 384 | pos->s, strerror_r(errno, sbuf, sizeof(sbuf))); |
ef12a141 ACM |
385 | } |
386 | ||
387 | strlist__delete(list); | |
388 | } | |
389 | } | |
390 | ||
8d8c8e4c | 391 | if (purge_name_list_str) { |
4a77e218 | 392 | list = strlist__new(purge_name_list_str, NULL); |
8d8c8e4c MH |
393 | if (list) { |
394 | strlist__for_each(pos, list) | |
395 | if (build_id_cache__purge_path(pos->s)) { | |
396 | if (errno == ENOENT) { | |
397 | pr_debug("%s wasn't in the cache\n", | |
398 | pos->s); | |
399 | continue; | |
400 | } | |
401 | pr_warning("Couldn't remove %s: %s\n", | |
402 | pos->s, strerror_r(errno, sbuf, sizeof(sbuf))); | |
403 | } | |
404 | ||
405 | strlist__delete(list); | |
406 | } | |
407 | } | |
408 | ||
fbb6976c | 409 | if (missing_filename) |
e3ed75bb | 410 | ret = build_id_cache__fprintf_missing(session, stdout); |
fbb6976c | 411 | |
eeb49845 | 412 | if (update_name_list_str) { |
4a77e218 | 413 | list = strlist__new(update_name_list_str, NULL); |
eeb49845 NK |
414 | if (list) { |
415 | strlist__for_each(pos, list) | |
e35f7362 | 416 | if (build_id_cache__update_file(pos->s)) { |
eeb49845 NK |
417 | if (errno == ENOENT) { |
418 | pr_debug("%s wasn't in the cache\n", | |
419 | pos->s); | |
420 | continue; | |
421 | } | |
422 | pr_warning("Couldn't update %s: %s\n", | |
340481ad | 423 | pos->s, strerror_r(errno, sbuf, sizeof(sbuf))); |
eeb49845 NK |
424 | } |
425 | ||
426 | strlist__delete(list); | |
427 | } | |
428 | } | |
429 | ||
e35f7362 | 430 | if (kcore_filename && build_id_cache__add_kcore(kcore_filename, force)) |
fc1b691d AH |
431 | pr_warning("Couldn't add %s\n", kcore_filename); |
432 | ||
e3ed75bb NK |
433 | out: |
434 | if (session) | |
435 | perf_session__delete(session); | |
436 | ||
fbb6976c | 437 | return ret; |
ef12a141 | 438 | } |