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