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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 "util/config.h"
31#include <linux/string.h>
32#include <linux/err.h>
33
34static int build_id_cache__kcore_buildid(const char *proc_dir, char *sbuildid)
35{
36 char root_dir[PATH_MAX];
37 char *p;
38
39 strlcpy(root_dir, proc_dir, sizeof(root_dir));
40
41 p = strrchr(root_dir, '/');
42 if (!p)
43 return -1;
44 *p = '\0';
45 return sysfs__sprintf_build_id(root_dir, sbuildid);
46}
47
48static int build_id_cache__kcore_dir(char *dir, size_t sz)
49{
50 return fetch_current_timestamp(dir, sz);
51}
52
53static bool same_kallsyms_reloc(const char *from_dir, char *to_dir)
54{
55 char from[PATH_MAX];
56 char to[PATH_MAX];
57 const char *name;
58 u64 addr1 = 0, addr2 = 0;
59 int i, err = -1;
60
61 scnprintf(from, sizeof(from), "%s/kallsyms", from_dir);
62 scnprintf(to, sizeof(to), "%s/kallsyms", to_dir);
63
64 for (i = 0; (name = ref_reloc_sym_names[i]) != NULL; i++) {
65 err = kallsyms__get_function_start(from, name, &addr1);
66 if (!err)
67 break;
68 }
69
70 if (err)
71 return false;
72
73 if (kallsyms__get_function_start(to, name, &addr2))
74 return false;
75
76 return addr1 == addr2;
77}
78
79static 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];
84 char to_subdir[PATH_MAX];
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);
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);
108 ret = 0;
109 break;
110 }
111 }
112
113 closedir(d);
114
115 return ret;
116}
117
118static int build_id_cache__add_kcore(const char *filename, bool force)
119{
120 char dir[32], sbuildid[SBUILD_ID_SIZE];
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
131 if (build_id_cache__kcore_buildid(from_dir, sbuildid) < 0)
132 return -1;
133
134 scnprintf(to_dir, sizeof(to_dir), "%s/%s/%s",
135 buildid_dir, DSO__NAME_KCORE, sbuildid);
136
137 if (!force &&
138 !build_id_cache__kcore_existing(from_dir, to_dir, sizeof(to_dir))) {
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/%s/%s/%s",
147 buildid_dir, DSO__NAME_KCORE, sbuildid, dir);
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
175static int build_id_cache__add_file(const char *filename, struct nsinfo *nsi)
176{
177 char sbuild_id[SBUILD_ID_SIZE];
178 struct build_id bid;
179 int err;
180 struct nscookie nsc;
181
182 nsinfo__mountns_enter(nsi, &nsc);
183 err = filename__read_build_id(filename, &bid);
184 nsinfo__mountns_exit(&nsc);
185 if (err < 0) {
186 pr_debug("Couldn't read a build-id in %s\n", filename);
187 return -1;
188 }
189
190 build_id__sprintf(&bid, sbuild_id);
191 err = build_id_cache__add_s(sbuild_id, filename, nsi,
192 false, false);
193 pr_debug("Adding %s %s: %s\n", sbuild_id, filename,
194 err ? "FAIL" : "Ok");
195 return err;
196}
197
198static int build_id_cache__remove_file(const char *filename, struct nsinfo *nsi)
199{
200 char sbuild_id[SBUILD_ID_SIZE];
201 struct build_id bid;
202 struct nscookie nsc;
203
204 int err;
205
206 nsinfo__mountns_enter(nsi, &nsc);
207 err = filename__read_build_id(filename, &bid);
208 nsinfo__mountns_exit(&nsc);
209 if (err < 0) {
210 pr_debug("Couldn't read a build-id in %s\n", filename);
211 return -1;
212 }
213
214 build_id__sprintf(&bid, sbuild_id);
215 err = build_id_cache__remove_s(sbuild_id);
216 pr_debug("Removing %s %s: %s\n", sbuild_id, filename,
217 err ? "FAIL" : "Ok");
218
219 return err;
220}
221
222static int build_id_cache__purge_path(const char *pathname, struct nsinfo *nsi)
223{
224 struct strlist *list;
225 struct str_node *pos;
226 int err;
227
228 err = build_id_cache__list_build_ids(pathname, nsi, &list);
229 if (err)
230 goto out;
231
232 strlist__for_each_entry(pos, list) {
233 err = build_id_cache__remove_s(pos->s);
234 pr_debug("Removing %s %s: %s\n", pos->s, pathname,
235 err ? "FAIL" : "Ok");
236 if (err)
237 break;
238 }
239 strlist__delete(list);
240
241out:
242 pr_debug("Purging %s: %s\n", pathname, err ? "FAIL" : "Ok");
243
244 return err;
245}
246
247static int build_id_cache__purge_all(void)
248{
249 struct strlist *list;
250 struct str_node *pos;
251 int err = 0;
252 char *buf;
253
254 list = build_id_cache__list_all(false);
255 if (!list) {
256 pr_debug("Failed to get buildids: -%d\n", errno);
257 return -EINVAL;
258 }
259
260 strlist__for_each_entry(pos, list) {
261 buf = build_id_cache__origname(pos->s);
262 err = build_id_cache__remove_s(pos->s);
263 pr_debug("Removing %s (%s): %s\n", buf, pos->s,
264 err ? "FAIL" : "Ok");
265 free(buf);
266 if (err)
267 break;
268 }
269 strlist__delete(list);
270
271 pr_debug("Purged all: %s\n", err ? "FAIL" : "Ok");
272 return err;
273}
274
275static bool dso__missing_buildid_cache(struct dso *dso, int parm __maybe_unused)
276{
277 char filename[PATH_MAX];
278 struct build_id bid;
279
280 if (!dso__build_id_filename(dso, filename, sizeof(filename), false))
281 return true;
282
283 if (filename__read_build_id(filename, &bid) == -1) {
284 if (errno == ENOENT)
285 return false;
286
287 pr_warning("Problems with %s file, consider removing it from the cache\n",
288 filename);
289 } else if (memcmp(dso->bid.data, bid.data, bid.size)) {
290 pr_warning("Problems with %s file, consider removing it from the cache\n",
291 filename);
292 }
293
294 return true;
295}
296
297static int build_id_cache__fprintf_missing(struct perf_session *session, FILE *fp)
298{
299 perf_session__fprintf_dsos_buildid(session, fp, dso__missing_buildid_cache, 0);
300 return 0;
301}
302
303static int build_id_cache__update_file(const char *filename, struct nsinfo *nsi)
304{
305 char sbuild_id[SBUILD_ID_SIZE];
306 struct build_id bid;
307 struct nscookie nsc;
308
309 int err;
310
311 nsinfo__mountns_enter(nsi, &nsc);
312 err = filename__read_build_id(filename, &bid);
313 nsinfo__mountns_exit(&nsc);
314 if (err < 0) {
315 pr_debug("Couldn't read a build-id in %s\n", filename);
316 return -1;
317 }
318 err = 0;
319
320 build_id__sprintf(&bid, sbuild_id);
321 if (build_id_cache__cached(sbuild_id))
322 err = build_id_cache__remove_s(sbuild_id);
323
324 if (!err)
325 err = build_id_cache__add_s(sbuild_id, filename, nsi, false,
326 false);
327
328 pr_debug("Updating %s %s: %s\n", sbuild_id, filename,
329 err ? "FAIL" : "Ok");
330
331 return err;
332}
333
334static int build_id_cache__show_all(void)
335{
336 struct strlist *bidlist;
337 struct str_node *nd;
338 char *buf;
339
340 bidlist = build_id_cache__list_all(true);
341 if (!bidlist) {
342 pr_debug("Failed to get buildids: -%d\n", errno);
343 return -1;
344 }
345 strlist__for_each_entry(nd, bidlist) {
346 buf = build_id_cache__origname(nd->s);
347 fprintf(stdout, "%s %s\n", nd->s, buf);
348 free(buf);
349 }
350 strlist__delete(bidlist);
351 return 0;
352}
353
354static int perf_buildid_cache_config(const char *var, const char *value, void *cb)
355{
356 struct perf_debuginfod *di = cb;
357
358 if (!strcmp(var, "buildid-cache.debuginfod")) {
359 di->urls = strdup(value);
360 if (!di->urls)
361 return -ENOMEM;
362 di->set = true;
363 }
364
365 return 0;
366}
367
368int cmd_buildid_cache(int argc, const char **argv)
369{
370 struct strlist *list;
371 struct str_node *pos;
372 int ret, ns_id = -1;
373 bool force = false;
374 bool list_files = false;
375 bool opts_flag = false;
376 bool purge_all = false;
377 char const *add_name_list_str = NULL,
378 *remove_name_list_str = NULL,
379 *purge_name_list_str = NULL,
380 *missing_filename = NULL,
381 *update_name_list_str = NULL,
382 *kcore_filename = NULL;
383 struct perf_debuginfod debuginfod = { };
384 char sbuf[STRERR_BUFSIZE];
385
386 struct perf_data data = {
387 .mode = PERF_DATA_MODE_READ,
388 };
389 struct perf_session *session = NULL;
390 struct nsinfo *nsi = NULL;
391
392 const struct option buildid_cache_options[] = {
393 OPT_STRING('a', "add", &add_name_list_str,
394 "file list", "file(s) to add"),
395 OPT_STRING('k', "kcore", &kcore_filename,
396 "file", "kcore file to add"),
397 OPT_STRING('r', "remove", &remove_name_list_str, "file list",
398 "file(s) to remove"),
399 OPT_STRING('p', "purge", &purge_name_list_str, "file list",
400 "file(s) to remove (remove old caches too)"),
401 OPT_BOOLEAN('P', "purge-all", &purge_all, "purge all cached files"),
402 OPT_BOOLEAN('l', "list", &list_files, "list all cached files"),
403 OPT_STRING('M', "missing", &missing_filename, "file",
404 "to find missing build ids in the cache"),
405 OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
406 OPT_STRING('u', "update", &update_name_list_str, "file list",
407 "file(s) to update"),
408 OPT_STRING_OPTARG_SET(0, "debuginfod", &debuginfod.urls,
409 &debuginfod.set, "debuginfod urls",
410 "Enable debuginfod data retrieval from DEBUGINFOD_URLS or specified urls",
411 "system"),
412 OPT_INCR('v', "verbose", &verbose, "be more verbose"),
413 OPT_INTEGER(0, "target-ns", &ns_id, "target pid for namespace context"),
414 OPT_END()
415 };
416 const char * const buildid_cache_usage[] = {
417 "perf buildid-cache [<options>]",
418 NULL
419 };
420
421 ret = perf_config(perf_buildid_cache_config, &debuginfod);
422 if (ret)
423 return ret;
424
425 argc = parse_options(argc, argv, buildid_cache_options,
426 buildid_cache_usage, 0);
427
428 opts_flag = add_name_list_str || kcore_filename ||
429 remove_name_list_str || purge_name_list_str ||
430 missing_filename || update_name_list_str ||
431 purge_all;
432
433 if (argc || !(list_files || opts_flag))
434 usage_with_options(buildid_cache_usage, buildid_cache_options);
435
436 perf_debuginfod_setup(&debuginfod);
437
438 /* -l is exclusive. It can not be used with other options. */
439 if (list_files && opts_flag) {
440 usage_with_options_msg(buildid_cache_usage,
441 buildid_cache_options, "-l is exclusive.\n");
442 }
443
444 if (ns_id > 0)
445 nsi = nsinfo__new(ns_id);
446
447 if (missing_filename) {
448 data.path = missing_filename;
449 data.force = force;
450
451 session = perf_session__new(&data, NULL);
452 if (IS_ERR(session))
453 return PTR_ERR(session);
454 }
455
456 if (symbol__init(session ? &session->header.env : NULL) < 0)
457 goto out;
458
459 setup_pager();
460
461 if (list_files) {
462 ret = build_id_cache__show_all();
463 goto out;
464 }
465
466 if (add_name_list_str) {
467 list = strlist__new(add_name_list_str, NULL);
468 if (list) {
469 strlist__for_each_entry(pos, list)
470 if (build_id_cache__add_file(pos->s, nsi)) {
471 if (errno == EEXIST) {
472 pr_debug("%s already in the cache\n",
473 pos->s);
474 continue;
475 }
476 pr_warning("Couldn't add %s: %s\n",
477 pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
478 }
479
480 strlist__delete(list);
481 }
482 }
483
484 if (remove_name_list_str) {
485 list = strlist__new(remove_name_list_str, NULL);
486 if (list) {
487 strlist__for_each_entry(pos, list)
488 if (build_id_cache__remove_file(pos->s, nsi)) {
489 if (errno == ENOENT) {
490 pr_debug("%s wasn't in the cache\n",
491 pos->s);
492 continue;
493 }
494 pr_warning("Couldn't remove %s: %s\n",
495 pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
496 }
497
498 strlist__delete(list);
499 }
500 }
501
502 if (purge_name_list_str) {
503 list = strlist__new(purge_name_list_str, NULL);
504 if (list) {
505 strlist__for_each_entry(pos, list)
506 if (build_id_cache__purge_path(pos->s, nsi)) {
507 if (errno == ENOENT) {
508 pr_debug("%s wasn't in the cache\n",
509 pos->s);
510 continue;
511 }
512 pr_warning("Couldn't remove %s: %s\n",
513 pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
514 }
515
516 strlist__delete(list);
517 }
518 }
519
520 if (purge_all) {
521 if (build_id_cache__purge_all()) {
522 pr_warning("Couldn't remove some caches. Error: %s.\n",
523 str_error_r(errno, sbuf, sizeof(sbuf)));
524 }
525 }
526
527 if (missing_filename)
528 ret = build_id_cache__fprintf_missing(session, stdout);
529
530 if (update_name_list_str) {
531 list = strlist__new(update_name_list_str, NULL);
532 if (list) {
533 strlist__for_each_entry(pos, list)
534 if (build_id_cache__update_file(pos->s, nsi)) {
535 if (errno == ENOENT) {
536 pr_debug("%s wasn't in the cache\n",
537 pos->s);
538 continue;
539 }
540 pr_warning("Couldn't update %s: %s\n",
541 pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
542 }
543
544 strlist__delete(list);
545 }
546 }
547
548 if (kcore_filename && build_id_cache__add_kcore(kcore_filename, force))
549 pr_warning("Couldn't add %s\n", kcore_filename);
550
551out:
552 perf_session__delete(session);
553 nsinfo__zput(nsi);
554
555 return ret;
556}