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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * builtin-buildid-cache.c
4 *
5 * Builtin buildid-cache command: Manages build-id cache
6 *
7 * Copyright (C) 2010, Red Hat Inc.
8 * Copyright (C) 2010, Arnaldo Carvalho de Melo <acme@redhat.com>
9 */
10#include <sys/types.h>
11#include <sys/time.h>
12#include <time.h>
13#include <dirent.h>
14#include <errno.h>
15#include <unistd.h>
16#include "builtin.h"
17#include "perf.h"
18#include "namespaces.h"
19#include "util/cache.h"
20#include "util/debug.h"
21#include "util/header.h"
22#include <subcmd/parse-options.h>
23#include "util/strlist.h"
24#include "util/build-id.h"
25#include "util/session.h"
26#include "util/symbol.h"
27#include "util/time-utils.h"
28
29static int build_id_cache__kcore_buildid(const char *proc_dir, char *sbuildid)
30{
31 char root_dir[PATH_MAX];
32 char *p;
33
34 strlcpy(root_dir, proc_dir, sizeof(root_dir));
35
36 p = strrchr(root_dir, '/');
37 if (!p)
38 return -1;
39 *p = '\0';
40 return sysfs__sprintf_build_id(root_dir, sbuildid);
41}
42
43static int build_id_cache__kcore_dir(char *dir, size_t sz)
44{
45 return fetch_current_timestamp(dir, sz);
46}
47
48static bool same_kallsyms_reloc(const char *from_dir, char *to_dir)
49{
50 char from[PATH_MAX];
51 char to[PATH_MAX];
52 const char *name;
53 u64 addr1 = 0, addr2 = 0;
54 int i, err = -1;
55
56 scnprintf(from, sizeof(from), "%s/kallsyms", from_dir);
57 scnprintf(to, sizeof(to), "%s/kallsyms", to_dir);
58
59 for (i = 0; (name = ref_reloc_sym_names[i]) != NULL; i++) {
60 err = kallsyms__get_function_start(from, name, &addr1);
61 if (!err)
62 break;
63 }
64
65 if (err)
66 return false;
67
68 if (kallsyms__get_function_start(to, name, &addr2))
69 return false;
70
71 return addr1 == addr2;
72}
73
74static int build_id_cache__kcore_existing(const char *from_dir, char *to_dir,
75 size_t to_dir_sz)
76{
77 char from[PATH_MAX];
78 char to[PATH_MAX];
79 char to_subdir[PATH_MAX];
80 struct dirent *dent;
81 int ret = -1;
82 DIR *d;
83
84 d = opendir(to_dir);
85 if (!d)
86 return -1;
87
88 scnprintf(from, sizeof(from), "%s/modules", from_dir);
89
90 while (1) {
91 dent = readdir(d);
92 if (!dent)
93 break;
94 if (dent->d_type != DT_DIR)
95 continue;
96 scnprintf(to, sizeof(to), "%s/%s/modules", to_dir,
97 dent->d_name);
98 scnprintf(to_subdir, sizeof(to_subdir), "%s/%s",
99 to_dir, dent->d_name);
100 if (!compare_proc_modules(from, to) &&
101 same_kallsyms_reloc(from_dir, to_subdir)) {
102 strlcpy(to_dir, to_subdir, to_dir_sz);
103 ret = 0;
104 break;
105 }
106 }
107
108 closedir(d);
109
110 return ret;
111}
112
113static int build_id_cache__add_kcore(const char *filename, bool force)
114{
115 char dir[32], sbuildid[SBUILD_ID_SIZE];
116 char from_dir[PATH_MAX], to_dir[PATH_MAX];
117 char *p;
118
119 strlcpy(from_dir, filename, sizeof(from_dir));
120
121 p = strrchr(from_dir, '/');
122 if (!p || strcmp(p + 1, "kcore"))
123 return -1;
124 *p = '\0';
125
126 if (build_id_cache__kcore_buildid(from_dir, sbuildid) < 0)
127 return -1;
128
129 scnprintf(to_dir, sizeof(to_dir), "%s/%s/%s",
130 buildid_dir, DSO__NAME_KCORE, sbuildid);
131
132 if (!force &&
133 !build_id_cache__kcore_existing(from_dir, to_dir, sizeof(to_dir))) {
134 pr_debug("same kcore found in %s\n", to_dir);
135 return 0;
136 }
137
138 if (build_id_cache__kcore_dir(dir, sizeof(dir)))
139 return -1;
140
141 scnprintf(to_dir, sizeof(to_dir), "%s/%s/%s/%s",
142 buildid_dir, DSO__NAME_KCORE, sbuildid, dir);
143
144 if (mkdir_p(to_dir, 0755))
145 return -1;
146
147 if (kcore_copy(from_dir, to_dir)) {
148 /* Remove YYYYmmddHHMMSShh directory */
149 if (!rmdir(to_dir)) {
150 p = strrchr(to_dir, '/');
151 if (p)
152 *p = '\0';
153 /* Try to remove buildid directory */
154 if (!rmdir(to_dir)) {
155 p = strrchr(to_dir, '/');
156 if (p)
157 *p = '\0';
158 /* Try to remove [kernel.kcore] directory */
159 rmdir(to_dir);
160 }
161 }
162 return -1;
163 }
164
165 pr_debug("kcore added to build-id cache directory %s\n", to_dir);
166
167 return 0;
168}
169
170static int build_id_cache__add_file(const char *filename, struct nsinfo *nsi)
171{
172 char sbuild_id[SBUILD_ID_SIZE];
173 u8 build_id[BUILD_ID_SIZE];
174 int err;
175 struct nscookie nsc;
176
177 nsinfo__mountns_enter(nsi, &nsc);
178 err = filename__read_build_id(filename, &build_id, sizeof(build_id));
179 nsinfo__mountns_exit(&nsc);
180 if (err < 0) {
181 pr_debug("Couldn't read a build-id in %s\n", filename);
182 return -1;
183 }
184
185 build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
186 err = build_id_cache__add_s(sbuild_id, filename, nsi,
187 false, false);
188 pr_debug("Adding %s %s: %s\n", sbuild_id, filename,
189 err ? "FAIL" : "Ok");
190 return err;
191}
192
193static int build_id_cache__remove_file(const char *filename, struct nsinfo *nsi)
194{
195 u8 build_id[BUILD_ID_SIZE];
196 char sbuild_id[SBUILD_ID_SIZE];
197 struct nscookie nsc;
198
199 int err;
200
201 nsinfo__mountns_enter(nsi, &nsc);
202 err = filename__read_build_id(filename, &build_id, sizeof(build_id));
203 nsinfo__mountns_exit(&nsc);
204 if (err < 0) {
205 pr_debug("Couldn't read a build-id in %s\n", filename);
206 return -1;
207 }
208
209 build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
210 err = build_id_cache__remove_s(sbuild_id);
211 pr_debug("Removing %s %s: %s\n", sbuild_id, filename,
212 err ? "FAIL" : "Ok");
213
214 return err;
215}
216
217static int build_id_cache__purge_path(const char *pathname, struct nsinfo *nsi)
218{
219 struct strlist *list;
220 struct str_node *pos;
221 int err;
222
223 err = build_id_cache__list_build_ids(pathname, nsi, &list);
224 if (err)
225 goto out;
226
227 strlist__for_each_entry(pos, list) {
228 err = build_id_cache__remove_s(pos->s);
229 pr_debug("Removing %s %s: %s\n", pos->s, pathname,
230 err ? "FAIL" : "Ok");
231 if (err)
232 break;
233 }
234 strlist__delete(list);
235
236out:
237 pr_debug("Purging %s: %s\n", pathname, err ? "FAIL" : "Ok");
238
239 return err;
240}
241
242static bool dso__missing_buildid_cache(struct dso *dso, int parm __maybe_unused)
243{
244 char filename[PATH_MAX];
245 u8 build_id[BUILD_ID_SIZE];
246
247 if (dso__build_id_filename(dso, filename, sizeof(filename), false) &&
248 filename__read_build_id(filename, build_id,
249 sizeof(build_id)) != sizeof(build_id)) {
250 if (errno == ENOENT)
251 return false;
252
253 pr_warning("Problems with %s file, consider removing it from the cache\n",
254 filename);
255 } else if (memcmp(dso->build_id, build_id, sizeof(dso->build_id))) {
256 pr_warning("Problems with %s file, consider removing it from the cache\n",
257 filename);
258 }
259
260 return true;
261}
262
263static int build_id_cache__fprintf_missing(struct perf_session *session, FILE *fp)
264{
265 perf_session__fprintf_dsos_buildid(session, fp, dso__missing_buildid_cache, 0);
266 return 0;
267}
268
269static int build_id_cache__update_file(const char *filename, struct nsinfo *nsi)
270{
271 u8 build_id[BUILD_ID_SIZE];
272 char sbuild_id[SBUILD_ID_SIZE];
273 struct nscookie nsc;
274
275 int err;
276
277 nsinfo__mountns_enter(nsi, &nsc);
278 err = filename__read_build_id(filename, &build_id, sizeof(build_id));
279 nsinfo__mountns_exit(&nsc);
280 if (err < 0) {
281 pr_debug("Couldn't read a build-id in %s\n", filename);
282 return -1;
283 }
284 err = 0;
285
286 build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
287 if (build_id_cache__cached(sbuild_id))
288 err = build_id_cache__remove_s(sbuild_id);
289
290 if (!err)
291 err = build_id_cache__add_s(sbuild_id, filename, nsi, false,
292 false);
293
294 pr_debug("Updating %s %s: %s\n", sbuild_id, filename,
295 err ? "FAIL" : "Ok");
296
297 return err;
298}
299
300int cmd_buildid_cache(int argc, const char **argv)
301{
302 struct strlist *list;
303 struct str_node *pos;
304 int ret = 0;
305 int ns_id = -1;
306 bool force = false;
307 char const *add_name_list_str = NULL,
308 *remove_name_list_str = NULL,
309 *purge_name_list_str = NULL,
310 *missing_filename = NULL,
311 *update_name_list_str = NULL,
312 *kcore_filename = NULL;
313 char sbuf[STRERR_BUFSIZE];
314
315 struct perf_data data = {
316 .mode = PERF_DATA_MODE_READ,
317 };
318 struct perf_session *session = NULL;
319 struct nsinfo *nsi = NULL;
320
321 const struct option buildid_cache_options[] = {
322 OPT_STRING('a', "add", &add_name_list_str,
323 "file list", "file(s) to add"),
324 OPT_STRING('k', "kcore", &kcore_filename,
325 "file", "kcore file to add"),
326 OPT_STRING('r', "remove", &remove_name_list_str, "file list",
327 "file(s) to remove"),
328 OPT_STRING('p', "purge", &purge_name_list_str, "file list",
329 "file(s) to remove (remove old caches too)"),
330 OPT_STRING('M', "missing", &missing_filename, "file",
331 "to find missing build ids in the cache"),
332 OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
333 OPT_STRING('u', "update", &update_name_list_str, "file list",
334 "file(s) to update"),
335 OPT_INCR('v', "verbose", &verbose, "be more verbose"),
336 OPT_INTEGER(0, "target-ns", &ns_id, "target pid for namespace context"),
337 OPT_END()
338 };
339 const char * const buildid_cache_usage[] = {
340 "perf buildid-cache [<options>]",
341 NULL
342 };
343
344 argc = parse_options(argc, argv, buildid_cache_options,
345 buildid_cache_usage, 0);
346
347 if (argc || (!add_name_list_str && !kcore_filename &&
348 !remove_name_list_str && !purge_name_list_str &&
349 !missing_filename && !update_name_list_str))
350 usage_with_options(buildid_cache_usage, buildid_cache_options);
351
352 if (ns_id > 0)
353 nsi = nsinfo__new(ns_id);
354
355 if (missing_filename) {
356 data.file.path = missing_filename;
357 data.force = force;
358
359 session = perf_session__new(&data, false, NULL);
360 if (session == NULL)
361 return -1;
362 }
363
364 if (symbol__init(session ? &session->header.env : NULL) < 0)
365 goto out;
366
367 setup_pager();
368
369 if (add_name_list_str) {
370 list = strlist__new(add_name_list_str, NULL);
371 if (list) {
372 strlist__for_each_entry(pos, list)
373 if (build_id_cache__add_file(pos->s, nsi)) {
374 if (errno == EEXIST) {
375 pr_debug("%s already in the cache\n",
376 pos->s);
377 continue;
378 }
379 pr_warning("Couldn't add %s: %s\n",
380 pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
381 }
382
383 strlist__delete(list);
384 }
385 }
386
387 if (remove_name_list_str) {
388 list = strlist__new(remove_name_list_str, NULL);
389 if (list) {
390 strlist__for_each_entry(pos, list)
391 if (build_id_cache__remove_file(pos->s, nsi)) {
392 if (errno == ENOENT) {
393 pr_debug("%s wasn't in the cache\n",
394 pos->s);
395 continue;
396 }
397 pr_warning("Couldn't remove %s: %s\n",
398 pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
399 }
400
401 strlist__delete(list);
402 }
403 }
404
405 if (purge_name_list_str) {
406 list = strlist__new(purge_name_list_str, NULL);
407 if (list) {
408 strlist__for_each_entry(pos, list)
409 if (build_id_cache__purge_path(pos->s, nsi)) {
410 if (errno == ENOENT) {
411 pr_debug("%s wasn't in the cache\n",
412 pos->s);
413 continue;
414 }
415 pr_warning("Couldn't remove %s: %s\n",
416 pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
417 }
418
419 strlist__delete(list);
420 }
421 }
422
423 if (missing_filename)
424 ret = build_id_cache__fprintf_missing(session, stdout);
425
426 if (update_name_list_str) {
427 list = strlist__new(update_name_list_str, NULL);
428 if (list) {
429 strlist__for_each_entry(pos, list)
430 if (build_id_cache__update_file(pos->s, nsi)) {
431 if (errno == ENOENT) {
432 pr_debug("%s wasn't in the cache\n",
433 pos->s);
434 continue;
435 }
436 pr_warning("Couldn't update %s: %s\n",
437 pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
438 }
439
440 strlist__delete(list);
441 }
442 }
443
444 if (kcore_filename && build_id_cache__add_kcore(kcore_filename, force))
445 pr_warning("Couldn't add %s\n", kcore_filename);
446
447out:
448 perf_session__delete(session);
449 nsinfo__zput(nsi);
450
451 return ret;
452}
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * builtin-buildid-cache.c
4 *
5 * Builtin buildid-cache command: Manages build-id cache
6 *
7 * Copyright (C) 2010, Red Hat Inc.
8 * Copyright (C) 2010, Arnaldo Carvalho de Melo <acme@redhat.com>
9 */
10#include <sys/types.h>
11#include <sys/time.h>
12#include <time.h>
13#include <dirent.h>
14#include <errno.h>
15#include <unistd.h>
16#include "builtin.h"
17#include "namespaces.h"
18#include "util/debug.h"
19#include "util/header.h"
20#include <subcmd/pager.h>
21#include <subcmd/parse-options.h>
22#include "util/strlist.h"
23#include "util/build-id.h"
24#include "util/session.h"
25#include "util/dso.h"
26#include "util/symbol.h"
27#include "util/time-utils.h"
28#include "util/util.h"
29#include "util/probe-file.h"
30#include <linux/string.h>
31#include <linux/err.h>
32
33static int build_id_cache__kcore_buildid(const char *proc_dir, char *sbuildid)
34{
35 char root_dir[PATH_MAX];
36 char *p;
37
38 strlcpy(root_dir, proc_dir, sizeof(root_dir));
39
40 p = strrchr(root_dir, '/');
41 if (!p)
42 return -1;
43 *p = '\0';
44 return sysfs__sprintf_build_id(root_dir, sbuildid);
45}
46
47static int build_id_cache__kcore_dir(char *dir, size_t sz)
48{
49 return fetch_current_timestamp(dir, sz);
50}
51
52static bool same_kallsyms_reloc(const char *from_dir, char *to_dir)
53{
54 char from[PATH_MAX];
55 char to[PATH_MAX];
56 const char *name;
57 u64 addr1 = 0, addr2 = 0;
58 int i, err = -1;
59
60 scnprintf(from, sizeof(from), "%s/kallsyms", from_dir);
61 scnprintf(to, sizeof(to), "%s/kallsyms", to_dir);
62
63 for (i = 0; (name = ref_reloc_sym_names[i]) != NULL; i++) {
64 err = kallsyms__get_function_start(from, name, &addr1);
65 if (!err)
66 break;
67 }
68
69 if (err)
70 return false;
71
72 if (kallsyms__get_function_start(to, name, &addr2))
73 return false;
74
75 return addr1 == addr2;
76}
77
78static int build_id_cache__kcore_existing(const char *from_dir, char *to_dir,
79 size_t to_dir_sz)
80{
81 char from[PATH_MAX];
82 char to[PATH_MAX];
83 char to_subdir[PATH_MAX];
84 struct dirent *dent;
85 int ret = -1;
86 DIR *d;
87
88 d = opendir(to_dir);
89 if (!d)
90 return -1;
91
92 scnprintf(from, sizeof(from), "%s/modules", from_dir);
93
94 while (1) {
95 dent = readdir(d);
96 if (!dent)
97 break;
98 if (dent->d_type != DT_DIR)
99 continue;
100 scnprintf(to, sizeof(to), "%s/%s/modules", to_dir,
101 dent->d_name);
102 scnprintf(to_subdir, sizeof(to_subdir), "%s/%s",
103 to_dir, dent->d_name);
104 if (!compare_proc_modules(from, to) &&
105 same_kallsyms_reloc(from_dir, to_subdir)) {
106 strlcpy(to_dir, to_subdir, to_dir_sz);
107 ret = 0;
108 break;
109 }
110 }
111
112 closedir(d);
113
114 return ret;
115}
116
117static int build_id_cache__add_kcore(const char *filename, bool force)
118{
119 char dir[32], sbuildid[SBUILD_ID_SIZE];
120 char from_dir[PATH_MAX], to_dir[PATH_MAX];
121 char *p;
122
123 strlcpy(from_dir, filename, sizeof(from_dir));
124
125 p = strrchr(from_dir, '/');
126 if (!p || strcmp(p + 1, "kcore"))
127 return -1;
128 *p = '\0';
129
130 if (build_id_cache__kcore_buildid(from_dir, sbuildid) < 0)
131 return -1;
132
133 scnprintf(to_dir, sizeof(to_dir), "%s/%s/%s",
134 buildid_dir, DSO__NAME_KCORE, sbuildid);
135
136 if (!force &&
137 !build_id_cache__kcore_existing(from_dir, to_dir, sizeof(to_dir))) {
138 pr_debug("same kcore found in %s\n", to_dir);
139 return 0;
140 }
141
142 if (build_id_cache__kcore_dir(dir, sizeof(dir)))
143 return -1;
144
145 scnprintf(to_dir, sizeof(to_dir), "%s/%s/%s/%s",
146 buildid_dir, DSO__NAME_KCORE, sbuildid, dir);
147
148 if (mkdir_p(to_dir, 0755))
149 return -1;
150
151 if (kcore_copy(from_dir, to_dir)) {
152 /* Remove YYYYmmddHHMMSShh directory */
153 if (!rmdir(to_dir)) {
154 p = strrchr(to_dir, '/');
155 if (p)
156 *p = '\0';
157 /* Try to remove buildid directory */
158 if (!rmdir(to_dir)) {
159 p = strrchr(to_dir, '/');
160 if (p)
161 *p = '\0';
162 /* Try to remove [kernel.kcore] directory */
163 rmdir(to_dir);
164 }
165 }
166 return -1;
167 }
168
169 pr_debug("kcore added to build-id cache directory %s\n", to_dir);
170
171 return 0;
172}
173
174static int build_id_cache__add_file(const char *filename, struct nsinfo *nsi)
175{
176 char sbuild_id[SBUILD_ID_SIZE];
177 u8 build_id[BUILD_ID_SIZE];
178 int err;
179 struct nscookie nsc;
180
181 nsinfo__mountns_enter(nsi, &nsc);
182 err = filename__read_build_id(filename, &build_id, sizeof(build_id));
183 nsinfo__mountns_exit(&nsc);
184 if (err < 0) {
185 pr_debug("Couldn't read a build-id in %s\n", filename);
186 return -1;
187 }
188
189 build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
190 err = build_id_cache__add_s(sbuild_id, filename, nsi,
191 false, false);
192 pr_debug("Adding %s %s: %s\n", sbuild_id, filename,
193 err ? "FAIL" : "Ok");
194 return err;
195}
196
197static int build_id_cache__remove_file(const char *filename, struct nsinfo *nsi)
198{
199 u8 build_id[BUILD_ID_SIZE];
200 char sbuild_id[SBUILD_ID_SIZE];
201 struct nscookie nsc;
202
203 int err;
204
205 nsinfo__mountns_enter(nsi, &nsc);
206 err = filename__read_build_id(filename, &build_id, sizeof(build_id));
207 nsinfo__mountns_exit(&nsc);
208 if (err < 0) {
209 pr_debug("Couldn't read a build-id in %s\n", filename);
210 return -1;
211 }
212
213 build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
214 err = build_id_cache__remove_s(sbuild_id);
215 pr_debug("Removing %s %s: %s\n", sbuild_id, filename,
216 err ? "FAIL" : "Ok");
217
218 return err;
219}
220
221static int build_id_cache__purge_path(const char *pathname, struct nsinfo *nsi)
222{
223 struct strlist *list;
224 struct str_node *pos;
225 int err;
226
227 err = build_id_cache__list_build_ids(pathname, nsi, &list);
228 if (err)
229 goto out;
230
231 strlist__for_each_entry(pos, list) {
232 err = build_id_cache__remove_s(pos->s);
233 pr_debug("Removing %s %s: %s\n", pos->s, pathname,
234 err ? "FAIL" : "Ok");
235 if (err)
236 break;
237 }
238 strlist__delete(list);
239
240out:
241 pr_debug("Purging %s: %s\n", pathname, err ? "FAIL" : "Ok");
242
243 return err;
244}
245
246static int build_id_cache__purge_all(void)
247{
248 struct strlist *list;
249 struct str_node *pos;
250 int err = 0;
251 char *buf;
252
253 list = build_id_cache__list_all(false);
254 if (!list) {
255 pr_debug("Failed to get buildids: -%d\n", errno);
256 return -EINVAL;
257 }
258
259 strlist__for_each_entry(pos, list) {
260 buf = build_id_cache__origname(pos->s);
261 err = build_id_cache__remove_s(pos->s);
262 pr_debug("Removing %s (%s): %s\n", buf, pos->s,
263 err ? "FAIL" : "Ok");
264 free(buf);
265 if (err)
266 break;
267 }
268 strlist__delete(list);
269
270 pr_debug("Purged all: %s\n", err ? "FAIL" : "Ok");
271 return err;
272}
273
274static bool dso__missing_buildid_cache(struct dso *dso, int parm __maybe_unused)
275{
276 char filename[PATH_MAX];
277 u8 build_id[BUILD_ID_SIZE];
278
279 if (dso__build_id_filename(dso, filename, sizeof(filename), false) &&
280 filename__read_build_id(filename, build_id,
281 sizeof(build_id)) != sizeof(build_id)) {
282 if (errno == ENOENT)
283 return false;
284
285 pr_warning("Problems with %s file, consider removing it from the cache\n",
286 filename);
287 } else if (memcmp(dso->build_id, build_id, sizeof(dso->build_id))) {
288 pr_warning("Problems with %s file, consider removing it from the cache\n",
289 filename);
290 }
291
292 return true;
293}
294
295static int build_id_cache__fprintf_missing(struct perf_session *session, FILE *fp)
296{
297 perf_session__fprintf_dsos_buildid(session, fp, dso__missing_buildid_cache, 0);
298 return 0;
299}
300
301static int build_id_cache__update_file(const char *filename, struct nsinfo *nsi)
302{
303 u8 build_id[BUILD_ID_SIZE];
304 char sbuild_id[SBUILD_ID_SIZE];
305 struct nscookie nsc;
306
307 int err;
308
309 nsinfo__mountns_enter(nsi, &nsc);
310 err = filename__read_build_id(filename, &build_id, sizeof(build_id));
311 nsinfo__mountns_exit(&nsc);
312 if (err < 0) {
313 pr_debug("Couldn't read a build-id in %s\n", filename);
314 return -1;
315 }
316 err = 0;
317
318 build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
319 if (build_id_cache__cached(sbuild_id))
320 err = build_id_cache__remove_s(sbuild_id);
321
322 if (!err)
323 err = build_id_cache__add_s(sbuild_id, filename, nsi, false,
324 false);
325
326 pr_debug("Updating %s %s: %s\n", sbuild_id, filename,
327 err ? "FAIL" : "Ok");
328
329 return err;
330}
331
332static int build_id_cache__show_all(void)
333{
334 struct strlist *bidlist;
335 struct str_node *nd;
336 char *buf;
337
338 bidlist = build_id_cache__list_all(true);
339 if (!bidlist) {
340 pr_debug("Failed to get buildids: -%d\n", errno);
341 return -1;
342 }
343 strlist__for_each_entry(nd, bidlist) {
344 buf = build_id_cache__origname(nd->s);
345 fprintf(stdout, "%s %s\n", nd->s, buf);
346 free(buf);
347 }
348 strlist__delete(bidlist);
349 return 0;
350}
351
352int cmd_buildid_cache(int argc, const char **argv)
353{
354 struct strlist *list;
355 struct str_node *pos;
356 int ret = 0;
357 int ns_id = -1;
358 bool force = false;
359 bool list_files = false;
360 bool opts_flag = false;
361 bool purge_all = false;
362 char const *add_name_list_str = NULL,
363 *remove_name_list_str = NULL,
364 *purge_name_list_str = NULL,
365 *missing_filename = NULL,
366 *update_name_list_str = NULL,
367 *kcore_filename = NULL;
368 char sbuf[STRERR_BUFSIZE];
369
370 struct perf_data data = {
371 .mode = PERF_DATA_MODE_READ,
372 };
373 struct perf_session *session = NULL;
374 struct nsinfo *nsi = NULL;
375
376 const struct option buildid_cache_options[] = {
377 OPT_STRING('a', "add", &add_name_list_str,
378 "file list", "file(s) to add"),
379 OPT_STRING('k', "kcore", &kcore_filename,
380 "file", "kcore file to add"),
381 OPT_STRING('r', "remove", &remove_name_list_str, "file list",
382 "file(s) to remove"),
383 OPT_STRING('p', "purge", &purge_name_list_str, "file list",
384 "file(s) to remove (remove old caches too)"),
385 OPT_BOOLEAN('P', "purge-all", &purge_all, "purge all cached files"),
386 OPT_BOOLEAN('l', "list", &list_files, "list all cached files"),
387 OPT_STRING('M', "missing", &missing_filename, "file",
388 "to find missing build ids in the cache"),
389 OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
390 OPT_STRING('u', "update", &update_name_list_str, "file list",
391 "file(s) to update"),
392 OPT_INCR('v', "verbose", &verbose, "be more verbose"),
393 OPT_INTEGER(0, "target-ns", &ns_id, "target pid for namespace context"),
394 OPT_END()
395 };
396 const char * const buildid_cache_usage[] = {
397 "perf buildid-cache [<options>]",
398 NULL
399 };
400
401 argc = parse_options(argc, argv, buildid_cache_options,
402 buildid_cache_usage, 0);
403
404 opts_flag = add_name_list_str || kcore_filename ||
405 remove_name_list_str || purge_name_list_str ||
406 missing_filename || update_name_list_str ||
407 purge_all;
408
409 if (argc || !(list_files || opts_flag))
410 usage_with_options(buildid_cache_usage, buildid_cache_options);
411
412 /* -l is exclusive. It can not be used with other options. */
413 if (list_files && opts_flag) {
414 usage_with_options_msg(buildid_cache_usage,
415 buildid_cache_options, "-l is exclusive.\n");
416 }
417
418 if (ns_id > 0)
419 nsi = nsinfo__new(ns_id);
420
421 if (missing_filename) {
422 data.path = missing_filename;
423 data.force = force;
424
425 session = perf_session__new(&data, false, NULL);
426 if (IS_ERR(session))
427 return PTR_ERR(session);
428 }
429
430 if (symbol__init(session ? &session->header.env : NULL) < 0)
431 goto out;
432
433 setup_pager();
434
435 if (list_files) {
436 ret = build_id_cache__show_all();
437 goto out;
438 }
439
440 if (add_name_list_str) {
441 list = strlist__new(add_name_list_str, NULL);
442 if (list) {
443 strlist__for_each_entry(pos, list)
444 if (build_id_cache__add_file(pos->s, nsi)) {
445 if (errno == EEXIST) {
446 pr_debug("%s already in the cache\n",
447 pos->s);
448 continue;
449 }
450 pr_warning("Couldn't add %s: %s\n",
451 pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
452 }
453
454 strlist__delete(list);
455 }
456 }
457
458 if (remove_name_list_str) {
459 list = strlist__new(remove_name_list_str, NULL);
460 if (list) {
461 strlist__for_each_entry(pos, list)
462 if (build_id_cache__remove_file(pos->s, nsi)) {
463 if (errno == ENOENT) {
464 pr_debug("%s wasn't in the cache\n",
465 pos->s);
466 continue;
467 }
468 pr_warning("Couldn't remove %s: %s\n",
469 pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
470 }
471
472 strlist__delete(list);
473 }
474 }
475
476 if (purge_name_list_str) {
477 list = strlist__new(purge_name_list_str, NULL);
478 if (list) {
479 strlist__for_each_entry(pos, list)
480 if (build_id_cache__purge_path(pos->s, nsi)) {
481 if (errno == ENOENT) {
482 pr_debug("%s wasn't in the cache\n",
483 pos->s);
484 continue;
485 }
486 pr_warning("Couldn't remove %s: %s\n",
487 pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
488 }
489
490 strlist__delete(list);
491 }
492 }
493
494 if (purge_all) {
495 if (build_id_cache__purge_all()) {
496 pr_warning("Couldn't remove some caches. Error: %s.\n",
497 str_error_r(errno, sbuf, sizeof(sbuf)));
498 }
499 }
500
501 if (missing_filename)
502 ret = build_id_cache__fprintf_missing(session, stdout);
503
504 if (update_name_list_str) {
505 list = strlist__new(update_name_list_str, NULL);
506 if (list) {
507 strlist__for_each_entry(pos, list)
508 if (build_id_cache__update_file(pos->s, nsi)) {
509 if (errno == ENOENT) {
510 pr_debug("%s wasn't in the cache\n",
511 pos->s);
512 continue;
513 }
514 pr_warning("Couldn't update %s: %s\n",
515 pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
516 }
517
518 strlist__delete(list);
519 }
520 }
521
522 if (kcore_filename && build_id_cache__add_kcore(kcore_filename, force))
523 pr_warning("Couldn't add %s\n", kcore_filename);
524
525out:
526 perf_session__delete(session);
527 nsinfo__zput(nsi);
528
529 return ret;
530}