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Commit | Line | Data |
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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> | |
a43783ae | 13 | #include <errno.h> |
fc1b691d | 14 | #include <unistd.h> |
ef12a141 ACM |
15 | #include "builtin.h" |
16 | #include "perf.h" | |
17 | #include "util/cache.h" | |
18 | #include "util/debug.h" | |
19 | #include "util/header.h" | |
4b6ab94e | 20 | #include <subcmd/parse-options.h> |
ef12a141 | 21 | #include "util/strlist.h" |
ebb296c2 | 22 | #include "util/build-id.h" |
fbb6976c | 23 | #include "util/session.h" |
4383db88 | 24 | #include "util/symbol.h" |
c5e4027e | 25 | #include "util/time-utils.h" |
ef12a141 | 26 | |
fc1b691d AH |
27 | static int build_id_cache__kcore_buildid(const char *proc_dir, char *sbuildid) |
28 | { | |
29 | char root_dir[PATH_MAX]; | |
fc1b691d AH |
30 | char *p; |
31 | ||
32 | strlcpy(root_dir, proc_dir, sizeof(root_dir)); | |
33 | ||
34 | p = strrchr(root_dir, '/'); | |
35 | if (!p) | |
36 | return -1; | |
37 | *p = '\0'; | |
0b5a7935 | 38 | return sysfs__sprintf_build_id(root_dir, sbuildid); |
fc1b691d AH |
39 | } |
40 | ||
41 | static int build_id_cache__kcore_dir(char *dir, size_t sz) | |
42 | { | |
37b20151 | 43 | return fetch_current_timestamp(dir, sz); |
fc1b691d AH |
44 | } |
45 | ||
d3b70220 AH |
46 | static bool same_kallsyms_reloc(const char *from_dir, char *to_dir) |
47 | { | |
48 | char from[PATH_MAX]; | |
49 | char to[PATH_MAX]; | |
50 | const char *name; | |
51 | u64 addr1 = 0, addr2 = 0; | |
b843f62a | 52 | int i, err = -1; |
d3b70220 AH |
53 | |
54 | scnprintf(from, sizeof(from), "%s/kallsyms", from_dir); | |
55 | scnprintf(to, sizeof(to), "%s/kallsyms", to_dir); | |
56 | ||
57 | for (i = 0; (name = ref_reloc_sym_names[i]) != NULL; i++) { | |
b843f62a ACM |
58 | err = kallsyms__get_function_start(from, name, &addr1); |
59 | if (!err) | |
d3b70220 AH |
60 | break; |
61 | } | |
62 | ||
b843f62a ACM |
63 | if (err) |
64 | return false; | |
65 | ||
66 | if (kallsyms__get_function_start(to, name, &addr2)) | |
67 | return false; | |
d3b70220 AH |
68 | |
69 | return addr1 == addr2; | |
70 | } | |
71 | ||
fc1b691d AH |
72 | static int build_id_cache__kcore_existing(const char *from_dir, char *to_dir, |
73 | size_t to_dir_sz) | |
74 | { | |
75 | char from[PATH_MAX]; | |
76 | char to[PATH_MAX]; | |
d3b70220 | 77 | char to_subdir[PATH_MAX]; |
fc1b691d AH |
78 | struct dirent *dent; |
79 | int ret = -1; | |
80 | DIR *d; | |
81 | ||
82 | d = opendir(to_dir); | |
83 | if (!d) | |
84 | return -1; | |
85 | ||
86 | scnprintf(from, sizeof(from), "%s/modules", from_dir); | |
87 | ||
88 | while (1) { | |
89 | dent = readdir(d); | |
90 | if (!dent) | |
91 | break; | |
92 | if (dent->d_type != DT_DIR) | |
93 | continue; | |
94 | scnprintf(to, sizeof(to), "%s/%s/modules", to_dir, | |
95 | dent->d_name); | |
d3b70220 AH |
96 | scnprintf(to_subdir, sizeof(to_subdir), "%s/%s", |
97 | to_dir, dent->d_name); | |
98 | if (!compare_proc_modules(from, to) && | |
99 | same_kallsyms_reloc(from_dir, to_subdir)) { | |
100 | strlcpy(to_dir, to_subdir, to_dir_sz); | |
fc1b691d AH |
101 | ret = 0; |
102 | break; | |
103 | } | |
104 | } | |
105 | ||
106 | closedir(d); | |
107 | ||
108 | return ret; | |
109 | } | |
110 | ||
e35f7362 | 111 | static int build_id_cache__add_kcore(const char *filename, bool force) |
fc1b691d | 112 | { |
d77fac7f | 113 | char dir[32], sbuildid[SBUILD_ID_SIZE]; |
fc1b691d AH |
114 | char from_dir[PATH_MAX], to_dir[PATH_MAX]; |
115 | char *p; | |
116 | ||
117 | strlcpy(from_dir, filename, sizeof(from_dir)); | |
118 | ||
119 | p = strrchr(from_dir, '/'); | |
120 | if (!p || strcmp(p + 1, "kcore")) | |
121 | return -1; | |
122 | *p = '\0'; | |
123 | ||
0b5a7935 | 124 | if (build_id_cache__kcore_buildid(from_dir, sbuildid) < 0) |
fc1b691d AH |
125 | return -1; |
126 | ||
0a77582f MH |
127 | scnprintf(to_dir, sizeof(to_dir), "%s/%s/%s", |
128 | buildid_dir, DSO__NAME_KCORE, sbuildid); | |
fc1b691d | 129 | |
5173fbb8 AH |
130 | if (!force && |
131 | !build_id_cache__kcore_existing(from_dir, to_dir, sizeof(to_dir))) { | |
fc1b691d AH |
132 | pr_debug("same kcore found in %s\n", to_dir); |
133 | return 0; | |
134 | } | |
135 | ||
136 | if (build_id_cache__kcore_dir(dir, sizeof(dir))) | |
137 | return -1; | |
138 | ||
0a77582f MH |
139 | scnprintf(to_dir, sizeof(to_dir), "%s/%s/%s/%s", |
140 | buildid_dir, DSO__NAME_KCORE, sbuildid, dir); | |
fc1b691d AH |
141 | |
142 | if (mkdir_p(to_dir, 0755)) | |
143 | return -1; | |
144 | ||
145 | if (kcore_copy(from_dir, to_dir)) { | |
146 | /* Remove YYYYmmddHHMMSShh directory */ | |
147 | if (!rmdir(to_dir)) { | |
148 | p = strrchr(to_dir, '/'); | |
149 | if (p) | |
150 | *p = '\0'; | |
151 | /* Try to remove buildid directory */ | |
152 | if (!rmdir(to_dir)) { | |
153 | p = strrchr(to_dir, '/'); | |
154 | if (p) | |
155 | *p = '\0'; | |
156 | /* Try to remove [kernel.kcore] directory */ | |
157 | rmdir(to_dir); | |
158 | } | |
159 | } | |
160 | return -1; | |
161 | } | |
162 | ||
163 | pr_debug("kcore added to build-id cache directory %s\n", to_dir); | |
164 | ||
165 | return 0; | |
166 | } | |
167 | ||
e35f7362 | 168 | static int build_id_cache__add_file(const char *filename) |
ef12a141 | 169 | { |
d77fac7f | 170 | char sbuild_id[SBUILD_ID_SIZE]; |
ef12a141 ACM |
171 | u8 build_id[BUILD_ID_SIZE]; |
172 | int err; | |
173 | ||
174 | if (filename__read_build_id(filename, &build_id, sizeof(build_id)) < 0) { | |
175 | pr_debug("Couldn't read a build-id in %s\n", filename); | |
176 | return -1; | |
177 | } | |
178 | ||
179 | build_id__sprintf(build_id, sizeof(build_id), sbuild_id); | |
e35f7362 | 180 | err = build_id_cache__add_s(sbuild_id, filename, |
7dbf4dcf | 181 | false, false); |
cc169c7c MH |
182 | pr_debug("Adding %s %s: %s\n", sbuild_id, filename, |
183 | err ? "FAIL" : "Ok"); | |
ef12a141 ACM |
184 | return err; |
185 | } | |
186 | ||
e35f7362 | 187 | static int build_id_cache__remove_file(const char *filename) |
ef12a141 ACM |
188 | { |
189 | u8 build_id[BUILD_ID_SIZE]; | |
d77fac7f | 190 | char sbuild_id[SBUILD_ID_SIZE]; |
ef12a141 ACM |
191 | |
192 | int err; | |
193 | ||
194 | if (filename__read_build_id(filename, &build_id, sizeof(build_id)) < 0) { | |
195 | pr_debug("Couldn't read a build-id in %s\n", filename); | |
196 | return -1; | |
197 | } | |
198 | ||
199 | build_id__sprintf(build_id, sizeof(build_id), sbuild_id); | |
e35f7362 | 200 | err = build_id_cache__remove_s(sbuild_id); |
cc169c7c MH |
201 | pr_debug("Removing %s %s: %s\n", sbuild_id, filename, |
202 | err ? "FAIL" : "Ok"); | |
ef12a141 ACM |
203 | |
204 | return err; | |
205 | } | |
206 | ||
8d8c8e4c MH |
207 | static int build_id_cache__purge_path(const char *pathname) |
208 | { | |
209 | struct strlist *list; | |
210 | struct str_node *pos; | |
211 | int err; | |
212 | ||
213 | err = build_id_cache__list_build_ids(pathname, &list); | |
214 | if (err) | |
215 | goto out; | |
216 | ||
602a1f4d | 217 | strlist__for_each_entry(pos, list) { |
8d8c8e4c | 218 | err = build_id_cache__remove_s(pos->s); |
cc169c7c MH |
219 | pr_debug("Removing %s %s: %s\n", pos->s, pathname, |
220 | err ? "FAIL" : "Ok"); | |
8d8c8e4c MH |
221 | if (err) |
222 | break; | |
223 | } | |
224 | strlist__delete(list); | |
225 | ||
226 | out: | |
cc169c7c | 227 | pr_debug("Purging %s: %s\n", pathname, err ? "FAIL" : "Ok"); |
8d8c8e4c MH |
228 | |
229 | return err; | |
230 | } | |
231 | ||
fbb6976c ACM |
232 | static bool dso__missing_buildid_cache(struct dso *dso, int parm __maybe_unused) |
233 | { | |
234 | char filename[PATH_MAX]; | |
235 | u8 build_id[BUILD_ID_SIZE]; | |
236 | ||
237 | if (dso__build_id_filename(dso, filename, sizeof(filename)) && | |
238 | filename__read_build_id(filename, build_id, | |
239 | sizeof(build_id)) != sizeof(build_id)) { | |
240 | if (errno == ENOENT) | |
241 | return false; | |
242 | ||
48000a1a | 243 | pr_warning("Problems with %s file, consider removing it from the cache\n", |
fbb6976c ACM |
244 | filename); |
245 | } else if (memcmp(dso->build_id, build_id, sizeof(dso->build_id))) { | |
48000a1a | 246 | pr_warning("Problems with %s file, consider removing it from the cache\n", |
fbb6976c ACM |
247 | filename); |
248 | } | |
249 | ||
250 | return true; | |
251 | } | |
252 | ||
e3ed75bb | 253 | static int build_id_cache__fprintf_missing(struct perf_session *session, FILE *fp) |
fbb6976c | 254 | { |
fbb6976c | 255 | perf_session__fprintf_dsos_buildid(session, fp, dso__missing_buildid_cache, 0); |
fbb6976c ACM |
256 | return 0; |
257 | } | |
258 | ||
e35f7362 | 259 | static int build_id_cache__update_file(const char *filename) |
eeb49845 NK |
260 | { |
261 | u8 build_id[BUILD_ID_SIZE]; | |
d77fac7f | 262 | char sbuild_id[SBUILD_ID_SIZE]; |
eeb49845 | 263 | |
a50d11a1 | 264 | int err = 0; |
eeb49845 NK |
265 | |
266 | if (filename__read_build_id(filename, &build_id, sizeof(build_id)) < 0) { | |
267 | pr_debug("Couldn't read a build-id in %s\n", filename); | |
268 | return -1; | |
269 | } | |
270 | ||
271 | build_id__sprintf(build_id, sizeof(build_id), sbuild_id); | |
a50d11a1 MH |
272 | if (build_id_cache__cached(sbuild_id)) |
273 | err = build_id_cache__remove_s(sbuild_id); | |
274 | ||
e35f7362 MH |
275 | if (!err) |
276 | err = build_id_cache__add_s(sbuild_id, filename, false, false); | |
277 | ||
cc169c7c MH |
278 | pr_debug("Updating %s %s: %s\n", sbuild_id, filename, |
279 | err ? "FAIL" : "Ok"); | |
eeb49845 NK |
280 | |
281 | return err; | |
282 | } | |
283 | ||
b0ad8ea6 | 284 | int cmd_buildid_cache(int argc, const char **argv) |
ef12a141 ACM |
285 | { |
286 | struct strlist *list; | |
287 | struct str_node *pos; | |
fbb6976c ACM |
288 | int ret = 0; |
289 | bool force = false; | |
472cc83c | 290 | char const *add_name_list_str = NULL, |
fbb6976c | 291 | *remove_name_list_str = NULL, |
8d8c8e4c | 292 | *purge_name_list_str = NULL, |
eeb49845 | 293 | *missing_filename = NULL, |
fc1b691d | 294 | *update_name_list_str = NULL, |
eec5a688 | 295 | *kcore_filename = NULL; |
340481ad | 296 | char sbuf[STRERR_BUFSIZE]; |
eeb49845 | 297 | |
e3ed75bb NK |
298 | struct perf_data_file file = { |
299 | .mode = PERF_DATA_MODE_READ, | |
300 | }; | |
301 | struct perf_session *session = NULL; | |
302 | ||
472cc83c ACM |
303 | const struct option buildid_cache_options[] = { |
304 | OPT_STRING('a', "add", &add_name_list_str, | |
305 | "file list", "file(s) to add"), | |
fc1b691d AH |
306 | OPT_STRING('k', "kcore", &kcore_filename, |
307 | "file", "kcore file to add"), | |
472cc83c ACM |
308 | OPT_STRING('r', "remove", &remove_name_list_str, "file list", |
309 | "file(s) to remove"), | |
8d8c8e4c MH |
310 | OPT_STRING('p', "purge", &purge_name_list_str, "path list", |
311 | "path(s) to remove (remove old caches too)"), | |
fbb6976c ACM |
312 | OPT_STRING('M', "missing", &missing_filename, "file", |
313 | "to find missing build ids in the cache"), | |
314 | OPT_BOOLEAN('f', "force", &force, "don't complain, do it"), | |
eeb49845 NK |
315 | OPT_STRING('u', "update", &update_name_list_str, "file list", |
316 | "file(s) to update"), | |
472cc83c ACM |
317 | OPT_INCR('v', "verbose", &verbose, "be more verbose"), |
318 | OPT_END() | |
319 | }; | |
320 | const char * const buildid_cache_usage[] = { | |
321 | "perf buildid-cache [<options>]", | |
322 | NULL | |
323 | }; | |
324 | ||
325 | argc = parse_options(argc, argv, buildid_cache_options, | |
326 | buildid_cache_usage, 0); | |
327 | ||
0497d0a8 MH |
328 | if (argc || (!add_name_list_str && !kcore_filename && |
329 | !remove_name_list_str && !purge_name_list_str && | |
330 | !missing_filename && !update_name_list_str)) | |
331 | usage_with_options(buildid_cache_usage, buildid_cache_options); | |
332 | ||
e3ed75bb NK |
333 | if (missing_filename) { |
334 | file.path = missing_filename; | |
335 | file.force = force; | |
336 | ||
337 | session = perf_session__new(&file, false, NULL); | |
338 | if (session == NULL) | |
339 | return -1; | |
340 | } | |
341 | ||
0a7e6d1b | 342 | if (symbol__init(session ? &session->header.env : NULL) < 0) |
e3ed75bb | 343 | goto out; |
472cc83c ACM |
344 | |
345 | setup_pager(); | |
ef12a141 | 346 | |
ef12a141 | 347 | if (add_name_list_str) { |
4a77e218 | 348 | list = strlist__new(add_name_list_str, NULL); |
ef12a141 | 349 | if (list) { |
602a1f4d | 350 | strlist__for_each_entry(pos, list) |
e35f7362 | 351 | if (build_id_cache__add_file(pos->s)) { |
ef12a141 ACM |
352 | if (errno == EEXIST) { |
353 | pr_debug("%s already in the cache\n", | |
354 | pos->s); | |
355 | continue; | |
356 | } | |
357 | pr_warning("Couldn't add %s: %s\n", | |
c8b5f2c9 | 358 | pos->s, str_error_r(errno, sbuf, sizeof(sbuf))); |
ef12a141 ACM |
359 | } |
360 | ||
361 | strlist__delete(list); | |
362 | } | |
363 | } | |
364 | ||
365 | if (remove_name_list_str) { | |
4a77e218 | 366 | list = strlist__new(remove_name_list_str, NULL); |
ef12a141 | 367 | if (list) { |
602a1f4d | 368 | strlist__for_each_entry(pos, list) |
e35f7362 | 369 | if (build_id_cache__remove_file(pos->s)) { |
ef12a141 ACM |
370 | if (errno == ENOENT) { |
371 | pr_debug("%s wasn't in the cache\n", | |
372 | pos->s); | |
373 | continue; | |
374 | } | |
375 | pr_warning("Couldn't remove %s: %s\n", | |
c8b5f2c9 | 376 | pos->s, str_error_r(errno, sbuf, sizeof(sbuf))); |
ef12a141 ACM |
377 | } |
378 | ||
379 | strlist__delete(list); | |
380 | } | |
381 | } | |
382 | ||
8d8c8e4c | 383 | if (purge_name_list_str) { |
4a77e218 | 384 | list = strlist__new(purge_name_list_str, NULL); |
8d8c8e4c | 385 | if (list) { |
602a1f4d | 386 | strlist__for_each_entry(pos, list) |
8d8c8e4c MH |
387 | if (build_id_cache__purge_path(pos->s)) { |
388 | if (errno == ENOENT) { | |
389 | pr_debug("%s wasn't in the cache\n", | |
390 | pos->s); | |
391 | continue; | |
392 | } | |
393 | pr_warning("Couldn't remove %s: %s\n", | |
c8b5f2c9 | 394 | pos->s, str_error_r(errno, sbuf, sizeof(sbuf))); |
8d8c8e4c MH |
395 | } |
396 | ||
397 | strlist__delete(list); | |
398 | } | |
399 | } | |
400 | ||
fbb6976c | 401 | if (missing_filename) |
e3ed75bb | 402 | ret = build_id_cache__fprintf_missing(session, stdout); |
fbb6976c | 403 | |
eeb49845 | 404 | if (update_name_list_str) { |
4a77e218 | 405 | list = strlist__new(update_name_list_str, NULL); |
eeb49845 | 406 | if (list) { |
602a1f4d | 407 | strlist__for_each_entry(pos, list) |
e35f7362 | 408 | if (build_id_cache__update_file(pos->s)) { |
eeb49845 NK |
409 | if (errno == ENOENT) { |
410 | pr_debug("%s wasn't in the cache\n", | |
411 | pos->s); | |
412 | continue; | |
413 | } | |
414 | pr_warning("Couldn't update %s: %s\n", | |
c8b5f2c9 | 415 | pos->s, str_error_r(errno, sbuf, sizeof(sbuf))); |
eeb49845 NK |
416 | } |
417 | ||
418 | strlist__delete(list); | |
419 | } | |
420 | } | |
421 | ||
e35f7362 | 422 | if (kcore_filename && build_id_cache__add_kcore(kcore_filename, force)) |
fc1b691d AH |
423 | pr_warning("Couldn't add %s\n", kcore_filename); |
424 | ||
e3ed75bb | 425 | out: |
e1446551 | 426 | perf_session__delete(session); |
e3ed75bb | 427 | |
fbb6976c | 428 | return ret; |
ef12a141 | 429 | } |