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v4.6
 
  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}
v6.2
  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	    filename__read_build_id(filename, &bid) == -1) {
 
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->bid.data, bid.data, bid.size)) {
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	char sbuild_id[SBUILD_ID_SIZE];
304	struct build_id bid;
305	struct nscookie nsc;
306
307	int err;
308
309	nsinfo__mountns_enter(nsi, &nsc);
310	err = filename__read_build_id(filename, &bid);
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(&bid, 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
352static int perf_buildid_cache_config(const char *var, const char *value, void *cb)
353{
354	struct perf_debuginfod *di = cb;
355
356	if (!strcmp(var, "buildid-cache.debuginfod")) {
357		di->urls = strdup(value);
358		if (!di->urls)
359			return -ENOMEM;
360		di->set = true;
361	}
362
363	return 0;
364}
365
366int cmd_buildid_cache(int argc, const char **argv)
367{
368	struct strlist *list;
369	struct str_node *pos;
370	int ret, ns_id = -1;
371	bool force = false;
372	bool list_files = false;
373	bool opts_flag = false;
374	bool purge_all = false;
375	char const *add_name_list_str = NULL,
376		   *remove_name_list_str = NULL,
377		   *purge_name_list_str = NULL,
378		   *missing_filename = NULL,
379		   *update_name_list_str = NULL,
380		   *kcore_filename = NULL;
381	struct perf_debuginfod debuginfod = { };
382	char sbuf[STRERR_BUFSIZE];
383
384	struct perf_data data = {
385		.mode  = PERF_DATA_MODE_READ,
386	};
387	struct perf_session *session = NULL;
388	struct nsinfo *nsi = NULL;
389
390	const struct option buildid_cache_options[] = {
391	OPT_STRING('a', "add", &add_name_list_str,
392		   "file list", "file(s) to add"),
393	OPT_STRING('k', "kcore", &kcore_filename,
394		   "file", "kcore file to add"),
395	OPT_STRING('r', "remove", &remove_name_list_str, "file list",
396		    "file(s) to remove"),
397	OPT_STRING('p', "purge", &purge_name_list_str, "file list",
398		    "file(s) to remove (remove old caches too)"),
399	OPT_BOOLEAN('P', "purge-all", &purge_all, "purge all cached files"),
400	OPT_BOOLEAN('l', "list", &list_files, "list all cached files"),
401	OPT_STRING('M', "missing", &missing_filename, "file",
402		   "to find missing build ids in the cache"),
403	OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
404	OPT_STRING('u', "update", &update_name_list_str, "file list",
405		    "file(s) to update"),
406	OPT_STRING_OPTARG_SET(0, "debuginfod", &debuginfod.urls,
407			&debuginfod.set, "debuginfod urls",
408			"Enable debuginfod data retrieval from DEBUGINFOD_URLS or specified urls",
409			"system"),
410	OPT_INCR('v', "verbose", &verbose, "be more verbose"),
411	OPT_INTEGER(0, "target-ns", &ns_id, "target pid for namespace context"),
412	OPT_END()
413	};
414	const char * const buildid_cache_usage[] = {
415		"perf buildid-cache [<options>]",
416		NULL
417	};
418
419	ret = perf_config(perf_buildid_cache_config, &debuginfod);
420	if (ret)
421		return ret;
422
423	argc = parse_options(argc, argv, buildid_cache_options,
424			     buildid_cache_usage, 0);
425
426	opts_flag = add_name_list_str || kcore_filename ||
427		remove_name_list_str || purge_name_list_str ||
428		missing_filename || update_name_list_str ||
429		purge_all;
430
431	if (argc || !(list_files || opts_flag))
432		usage_with_options(buildid_cache_usage, buildid_cache_options);
433
434	perf_debuginfod_setup(&debuginfod);
435
436	/* -l is exclusive. It can not be used with other options. */
437	if (list_files && opts_flag) {
438		usage_with_options_msg(buildid_cache_usage,
439			buildid_cache_options, "-l is exclusive.\n");
440	}
441
442	if (ns_id > 0)
443		nsi = nsinfo__new(ns_id);
444
445	if (missing_filename) {
446		data.path  = missing_filename;
447		data.force = force;
448
449		session = perf_session__new(&data, NULL);
450		if (IS_ERR(session))
451			return PTR_ERR(session);
452	}
453
454	if (symbol__init(session ? &session->header.env : NULL) < 0)
455		goto out;
456
457	setup_pager();
458
459	if (list_files) {
460		ret = build_id_cache__show_all();
461		goto out;
462	}
463
464	if (add_name_list_str) {
465		list = strlist__new(add_name_list_str, NULL);
466		if (list) {
467			strlist__for_each_entry(pos, list)
468				if (build_id_cache__add_file(pos->s, nsi)) {
469					if (errno == EEXIST) {
470						pr_debug("%s already in the cache\n",
471							 pos->s);
472						continue;
473					}
474					pr_warning("Couldn't add %s: %s\n",
475						   pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
476				}
477
478			strlist__delete(list);
479		}
480	}
481
482	if (remove_name_list_str) {
483		list = strlist__new(remove_name_list_str, NULL);
484		if (list) {
485			strlist__for_each_entry(pos, list)
486				if (build_id_cache__remove_file(pos->s, nsi)) {
487					if (errno == ENOENT) {
488						pr_debug("%s wasn't in the cache\n",
489							 pos->s);
490						continue;
491					}
492					pr_warning("Couldn't remove %s: %s\n",
493						   pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
494				}
495
496			strlist__delete(list);
497		}
498	}
499
500	if (purge_name_list_str) {
501		list = strlist__new(purge_name_list_str, NULL);
502		if (list) {
503			strlist__for_each_entry(pos, list)
504				if (build_id_cache__purge_path(pos->s, nsi)) {
505					if (errno == ENOENT) {
506						pr_debug("%s wasn't in the cache\n",
507							 pos->s);
508						continue;
509					}
510					pr_warning("Couldn't remove %s: %s\n",
511						   pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
512				}
513
514			strlist__delete(list);
515		}
516	}
517
518	if (purge_all) {
519		if (build_id_cache__purge_all()) {
520			pr_warning("Couldn't remove some caches. Error: %s.\n",
521				str_error_r(errno, sbuf, sizeof(sbuf)));
522		}
523	}
524
525	if (missing_filename)
526		ret = build_id_cache__fprintf_missing(session, stdout);
527
528	if (update_name_list_str) {
529		list = strlist__new(update_name_list_str, NULL);
530		if (list) {
531			strlist__for_each_entry(pos, list)
532				if (build_id_cache__update_file(pos->s, nsi)) {
533					if (errno == ENOENT) {
534						pr_debug("%s wasn't in the cache\n",
535							 pos->s);
536						continue;
537					}
538					pr_warning("Couldn't update %s: %s\n",
539						   pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
540				}
541
542			strlist__delete(list);
543		}
544	}
545
546	if (kcore_filename && build_id_cache__add_kcore(kcore_filename, force))
547		pr_warning("Couldn't add %s\n", kcore_filename);
548
549out:
550	perf_session__delete(session);
551	nsinfo__zput(nsi);
552
553	return ret;
554}