[linux.git] / tools / perf / builtin-buildid-cache.c

// SPDX-License-Identifier: GPL-2.0
/*
 * builtin-buildid-cache.c
 *
 * Builtin buildid-cache command: Manages build-id cache
 *
 * Copyright (C) 2010, Red Hat Inc.
 * Copyright (C) 2010, Arnaldo Carvalho de Melo <[email protected]>
 */
#include <sys/types.h>
#include <sys/time.h>
#include <time.h>
#include <dirent.h>
#include <errno.h>
#include <unistd.h>
#include "builtin.h"
#include "namespaces.h"
#include "util/debug.h"
#include "util/header.h"
#include <subcmd/pager.h>
#include <subcmd/parse-options.h>
#include "util/strlist.h"
#include "util/build-id.h"
#include "util/session.h"
#include "util/dso.h"
#include "util/symbol.h"
#include "util/time-utils.h"
#include "util/util.h"
#include "util/probe-file.h"
#include "util/config.h"
#include <linux/string.h>
#include <linux/err.h>

static int build_id_cache__kcore_buildid(const char *proc_dir, char *sbuildid)
{
	char root_dir[PATH_MAX];
	char *p;

	strlcpy(root_dir, proc_dir, sizeof(root_dir));

	p = strrchr(root_dir, '/');
	if (!p)
		return -1;
	*p = '\0';
	return sysfs__sprintf_build_id(root_dir, sbuildid);
}

static int build_id_cache__kcore_dir(char *dir, size_t sz)
{
	return fetch_current_timestamp(dir, sz);
}

static bool same_kallsyms_reloc(const char *from_dir, char *to_dir)
{
	char from[PATH_MAX];
	char to[PATH_MAX];
	const char *name;
	u64 addr1 = 0, addr2 = 0;
	int i, err = -1;

	scnprintf(from, sizeof(from), "%s/kallsyms", from_dir);
	scnprintf(to, sizeof(to), "%s/kallsyms", to_dir);

	for (i = 0; (name = ref_reloc_sym_names[i]) != NULL; i++) {
		err = kallsyms__get_function_start(from, name, &addr1);
		if (!err)
			break;
	}

	if (err)
		return false;

	if (kallsyms__get_function_start(to, name, &addr2))
		return false;

	return addr1 == addr2;
}

static int build_id_cache__kcore_existing(const char *from_dir, char *to_dir,
					  size_t to_dir_sz)
{
	char from[PATH_MAX];
	char to[PATH_MAX];
	char to_subdir[PATH_MAX];
	struct dirent *dent;
	int ret = -1;
	DIR *d;

	d = opendir(to_dir);
	if (!d)
		return -1;

	scnprintf(from, sizeof(from), "%s/modules", from_dir);

	while (1) {
		dent = readdir(d);
		if (!dent)
			break;
		if (dent->d_type != DT_DIR)
			continue;
		scnprintf(to, sizeof(to), "%s/%s/modules", to_dir,
			  dent->d_name);
		scnprintf(to_subdir, sizeof(to_subdir), "%s/%s",
			  to_dir, dent->d_name);
		if (!compare_proc_modules(from, to) &&
		    same_kallsyms_reloc(from_dir, to_subdir)) {
			strlcpy(to_dir, to_subdir, to_dir_sz);
			ret = 0;
			break;
		}
	}

	closedir(d);

	return ret;
}

static int build_id_cache__add_kcore(const char *filename, bool force)
{
	char dir[32], sbuildid[SBUILD_ID_SIZE];
	char from_dir[PATH_MAX], to_dir[PATH_MAX];
	char *p;

	strlcpy(from_dir, filename, sizeof(from_dir));

	p = strrchr(from_dir, '/');
	if (!p || strcmp(p + 1, "kcore"))
		return -1;
	*p = '\0';

	if (build_id_cache__kcore_buildid(from_dir, sbuildid) < 0)
		return -1;

	scnprintf(to_dir, sizeof(to_dir), "%s/%s/%s",
		  buildid_dir, DSO__NAME_KCORE, sbuildid);

	if (!force &&
	    !build_id_cache__kcore_existing(from_dir, to_dir, sizeof(to_dir))) {
		pr_debug("same kcore found in %s\n", to_dir);
		return 0;
	}

	if (build_id_cache__kcore_dir(dir, sizeof(dir)))
		return -1;

	scnprintf(to_dir, sizeof(to_dir), "%s/%s/%s/%s",
		  buildid_dir, DSO__NAME_KCORE, sbuildid, dir);

	if (mkdir_p(to_dir, 0755))
		return -1;

	if (kcore_copy(from_dir, to_dir)) {
		/* Remove YYYYmmddHHMMSShh directory */
		if (!rmdir(to_dir)) {
			p = strrchr(to_dir, '/');
			if (p)
				*p = '\0';
			/* Try to remove buildid directory */
			if (!rmdir(to_dir)) {
				p = strrchr(to_dir, '/');
				if (p)
					*p = '\0';
				/* Try to remove [kernel.kcore] directory */
				rmdir(to_dir);
			}
		}
		return -1;
	}

	pr_debug("kcore added to build-id cache directory %s\n", to_dir);

	return 0;
}

static int build_id_cache__add_file(const char *filename, struct nsinfo *nsi)
{
	char sbuild_id[SBUILD_ID_SIZE];
	struct build_id bid;
	int err;
	struct nscookie nsc;

	nsinfo__mountns_enter(nsi, &nsc);
	err = filename__read_build_id(filename, &bid);
	nsinfo__mountns_exit(&nsc);
	if (err < 0) {
		pr_debug("Couldn't read a build-id in %s\n", filename);
		return -1;
	}

	build_id__sprintf(&bid, sbuild_id);
	err = build_id_cache__add_s(sbuild_id, filename, nsi,
				    false, false);
	pr_debug("Adding %s %s: %s\n", sbuild_id, filename,
		 err ? "FAIL" : "Ok");
	return err;
}

static int build_id_cache__remove_file(const char *filename, struct nsinfo *nsi)
{
	char sbuild_id[SBUILD_ID_SIZE];
	struct build_id bid;
	struct nscookie nsc;

	int err;

	nsinfo__mountns_enter(nsi, &nsc);
	err = filename__read_build_id(filename, &bid);
	nsinfo__mountns_exit(&nsc);
	if (err < 0) {
		pr_debug("Couldn't read a build-id in %s\n", filename);
		return -1;
	}

	build_id__sprintf(&bid, sbuild_id);
	err = build_id_cache__remove_s(sbuild_id);
	pr_debug("Removing %s %s: %s\n", sbuild_id, filename,
		 err ? "FAIL" : "Ok");

	return err;
}

static int build_id_cache__purge_path(const char *pathname, struct nsinfo *nsi)
{
	struct strlist *list;
	struct str_node *pos;
	int err;

	err = build_id_cache__list_build_ids(pathname, nsi, &list);
	if (err)
		goto out;

	strlist__for_each_entry(pos, list) {
		err = build_id_cache__remove_s(pos->s);
		pr_debug("Removing %s %s: %s\n", pos->s, pathname,
			 err ? "FAIL" : "Ok");
		if (err)
			break;
	}
	strlist__delete(list);

out:
	pr_debug("Purging %s: %s\n", pathname, err ? "FAIL" : "Ok");

	return err;
}

static int build_id_cache__purge_all(void)
{
	struct strlist *list;
	struct str_node *pos;
	int err = 0;
	char *buf;

	list = build_id_cache__list_all(false);
	if (!list) {
		pr_debug("Failed to get buildids: -%d\n", errno);
		return -EINVAL;
	}

	strlist__for_each_entry(pos, list) {
		buf = build_id_cache__origname(pos->s);
		err = build_id_cache__remove_s(pos->s);
		pr_debug("Removing %s (%s): %s\n", buf, pos->s,
			 err ? "FAIL" : "Ok");
		free(buf);
		if (err)
			break;
	}
	strlist__delete(list);

	pr_debug("Purged all: %s\n", err ? "FAIL" : "Ok");
	return err;
}

static bool dso__missing_buildid_cache(struct dso *dso, int parm __maybe_unused)
{
	char filename[PATH_MAX];
	struct build_id bid;

	if (dso__build_id_filename(dso, filename, sizeof(filename), false) &&
	    filename__read_build_id(filename, &bid) == -1) {
		if (errno == ENOENT)
			return false;

		pr_warning("Problems with %s file, consider removing it from the cache\n",
			   filename);
	} else if (memcmp(dso->bid.data, bid.data, bid.size)) {
		pr_warning("Problems with %s file, consider removing it from the cache\n",
			   filename);
	}

	return true;
}

static int build_id_cache__fprintf_missing(struct perf_session *session, FILE *fp)
{
	perf_session__fprintf_dsos_buildid(session, fp, dso__missing_buildid_cache, 0);
	return 0;
}

static int build_id_cache__update_file(const char *filename, struct nsinfo *nsi)
{
	char sbuild_id[SBUILD_ID_SIZE];
	struct build_id bid;
	struct nscookie nsc;

	int err;

	nsinfo__mountns_enter(nsi, &nsc);
	err = filename__read_build_id(filename, &bid);
	nsinfo__mountns_exit(&nsc);
	if (err < 0) {
		pr_debug("Couldn't read a build-id in %s\n", filename);
		return -1;
	}
	err = 0;

	build_id__sprintf(&bid, sbuild_id);
	if (build_id_cache__cached(sbuild_id))
		err = build_id_cache__remove_s(sbuild_id);

	if (!err)
		err = build_id_cache__add_s(sbuild_id, filename, nsi, false,
					    false);

	pr_debug("Updating %s %s: %s\n", sbuild_id, filename,
		 err ? "FAIL" : "Ok");

	return err;
}

static int build_id_cache__show_all(void)
{
	struct strlist *bidlist;
	struct str_node *nd;
	char *buf;

	bidlist = build_id_cache__list_all(true);
	if (!bidlist) {
		pr_debug("Failed to get buildids: -%d\n", errno);
		return -1;
	}
	strlist__for_each_entry(nd, bidlist) {
		buf = build_id_cache__origname(nd->s);
		fprintf(stdout, "%s %s\n", nd->s, buf);
		free(buf);
	}
	strlist__delete(bidlist);
	return 0;
}

static int perf_buildid_cache_config(const char *var, const char *value, void *cb)
{
	const char **debuginfod = cb;

	if (!strcmp(var, "buildid-cache.debuginfod"))
		*debuginfod = strdup(value);

	return 0;
}

int cmd_buildid_cache(int argc, const char **argv)
{
	struct strlist *list;
	struct str_node *pos;
	int ret, ns_id = -1;
	bool force = false;
	bool list_files = false;
	bool opts_flag = false;
	bool purge_all = false;
	char const *add_name_list_str = NULL,
		   *remove_name_list_str = NULL,
		   *purge_name_list_str = NULL,
		   *missing_filename = NULL,
		   *update_name_list_str = NULL,
		   *kcore_filename = NULL,
		   *debuginfod = NULL;
	char sbuf[STRERR_BUFSIZE];

	struct perf_data data = {
		.mode  = PERF_DATA_MODE_READ,
	};
	struct perf_session *session = NULL;
	struct nsinfo *nsi = NULL;

	const struct option buildid_cache_options[] = {
	OPT_STRING('a', "add", &add_name_list_str,
		   "file list", "file(s) to add"),
	OPT_STRING('k', "kcore", &kcore_filename,
		   "file", "kcore file to add"),
	OPT_STRING('r', "remove", &remove_name_list_str, "file list",
		    "file(s) to remove"),
	OPT_STRING('p', "purge", &purge_name_list_str, "file list",
		    "file(s) to remove (remove old caches too)"),
	OPT_BOOLEAN('P', "purge-all", &purge_all, "purge all cached files"),
	OPT_BOOLEAN('l', "list", &list_files, "list all cached files"),
	OPT_STRING('M', "missing", &missing_filename, "file",
		   "to find missing build ids in the cache"),
	OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
	OPT_STRING('u', "update", &update_name_list_str, "file list",
		    "file(s) to update"),
	OPT_STRING(0, "debuginfod", &debuginfod, "debuginfod url",
		    "set debuginfod url"),
	OPT_INCR('v', "verbose", &verbose, "be more verbose"),
	OPT_INTEGER(0, "target-ns", &ns_id, "target pid for namespace context"),
	OPT_END()
	};
	const char * const buildid_cache_usage[] = {
		"perf buildid-cache [<options>]",
		NULL
	};

	ret = perf_config(perf_buildid_cache_config, &debuginfod);
	if (ret)
		return ret;

	argc = parse_options(argc, argv, buildid_cache_options,
			     buildid_cache_usage, 0);

	opts_flag = add_name_list_str || kcore_filename ||
		remove_name_list_str || purge_name_list_str ||
		missing_filename || update_name_list_str ||
		purge_all;

	if (argc || !(list_files || opts_flag))
		usage_with_options(buildid_cache_usage, buildid_cache_options);

	if (debuginfod) {
		pr_debug("DEBUGINFOD_URLS=%s\n", debuginfod);
		setenv("DEBUGINFOD_URLS", debuginfod, 1);
	}

	/* -l is exclusive. It can not be used with other options. */
	if (list_files && opts_flag) {
		usage_with_options_msg(buildid_cache_usage,
			buildid_cache_options, "-l is exclusive.\n");
	}

	if (ns_id > 0)
		nsi = nsinfo__new(ns_id);

	if (missing_filename) {
		data.path  = missing_filename;
		data.force = force;

		session = perf_session__new(&data, false, NULL);
		if (IS_ERR(session))
			return PTR_ERR(session);
	}

	if (symbol__init(session ? &session->header.env : NULL) < 0)
		goto out;

	setup_pager();

	if (list_files) {
		ret = build_id_cache__show_all();
		goto out;
	}

	if (add_name_list_str) {
		list = strlist__new(add_name_list_str, NULL);
		if (list) {
			strlist__for_each_entry(pos, list)
				if (build_id_cache__add_file(pos->s, nsi)) {
					if (errno == EEXIST) {
						pr_debug("%s already in the cache\n",
							 pos->s);
						continue;
					}
					pr_warning("Couldn't add %s: %s\n",
						   pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
				}

			strlist__delete(list);
		}
	}

	if (remove_name_list_str) {
		list = strlist__new(remove_name_list_str, NULL);
		if (list) {
			strlist__for_each_entry(pos, list)
				if (build_id_cache__remove_file(pos->s, nsi)) {
					if (errno == ENOENT) {
						pr_debug("%s wasn't in the cache\n",
							 pos->s);
						continue;
					}
					pr_warning("Couldn't remove %s: %s\n",
						   pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
				}

			strlist__delete(list);
		}
	}

	if (purge_name_list_str) {
		list = strlist__new(purge_name_list_str, NULL);
		if (list) {
			strlist__for_each_entry(pos, list)
				if (build_id_cache__purge_path(pos->s, nsi)) {
					if (errno == ENOENT) {
						pr_debug("%s wasn't in the cache\n",
							 pos->s);
						continue;
					}
					pr_warning("Couldn't remove %s: %s\n",
						   pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
				}

			strlist__delete(list);
		}
	}

	if (purge_all) {
		if (build_id_cache__purge_all()) {
			pr_warning("Couldn't remove some caches. Error: %s.\n",
				str_error_r(errno, sbuf, sizeof(sbuf)));
		}
	}

	if (missing_filename)
		ret = build_id_cache__fprintf_missing(session, stdout);

	if (update_name_list_str) {
		list = strlist__new(update_name_list_str, NULL);
		if (list) {
			strlist__for_each_entry(pos, list)
				if (build_id_cache__update_file(pos->s, nsi)) {
					if (errno == ENOENT) {
						pr_debug("%s wasn't in the cache\n",
							 pos->s);
						continue;
					}
					pr_warning("Couldn't update %s: %s\n",
						   pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
				}

			strlist__delete(list);
		}
	}

	if (kcore_filename && build_id_cache__add_kcore(kcore_filename, force))
		pr_warning("Couldn't add %s\n", kcore_filename);

out:
	perf_session__delete(session);
	nsinfo__zput(nsi);

	return ret;
}
Commit	Line	Data
b2441318	1	// SPDX-License-Identifier: GPL-2.0
ef12a141 ACM	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 <[email protected]>
	9	*/
fc1b691d AH	10	#include <sys/types.h>
	11	#include <sys/time.h>
	12	#include <time.h>
	13	#include <dirent.h>
a43783ae	14	#include <errno.h>
fc1b691d	15	#include <unistd.h>
ef12a141	16	#include "builtin.h"
f045b8c4	17	#include "namespaces.h"
ef12a141 ACM	18	#include "util/debug.h"
ef12a141 ACM	19	#include "util/header.h"
fa0d9846	20	#include <subcmd/pager.h>
4b6ab94e	21	#include <subcmd/parse-options.h>
ef12a141	22	#include "util/strlist.h"
ebb296c2	23	#include "util/build-id.h"
fbb6976c	24	#include "util/session.h"
4a3cec84	25	#include "util/dso.h"
4383db88	26	#include "util/symbol.h"
c5e4027e	27	#include "util/time-utils.h"
efa73d37	28	#include "util/util.h"
8e1e0d74	29	#include "util/probe-file.h"
e8a2061f	30	#include "util/config.h"
fa0d9846	31	#include <linux/string.h>
6ef81c55	32	#include <linux/err.h>
ef12a141	33
fc1b691d AH	34	static int build_id_cache__kcore_buildid(const char proc_dir, char sbuildid)
	35	{
	36	char root_dir[PATH_MAX];
fc1b691d AH	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';
0b5a7935	45	return sysfs__sprintf_build_id(root_dir, sbuildid);
fc1b691d AH	46	}
	47
	48	static int build_id_cache__kcore_dir(char *dir, size_t sz)
	49	{
37b20151	50	return fetch_current_timestamp(dir, sz);
fc1b691d AH	51	}
fc1b691d AH	52
d3b70220 AH	53	static 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;
b843f62a	59	int i, err = -1;
d3b70220 AH	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++) {
b843f62a ACM	65	err = kallsyms__get_function_start(from, name, &addr1);
b843f62a ACM	66	if (!err)
d3b70220 AH	67	break;
	68	}
	69
b843f62a ACM	70	if (err)
	71	return false;
	72
	73	if (kallsyms__get_function_start(to, name, &addr2))
	74	return false;
d3b70220 AH	75
	76	return addr1 == addr2;
	77	}
	78
fc1b691d AH	79	static 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];
d3b70220	84	char to_subdir[PATH_MAX];
fc1b691d AH	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);
d3b70220 AH	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);
fc1b691d AH	108	ret = 0;
	109	break;
	110	}
	111	}
	112
	113	closedir(d);
	114
	115	return ret;
	116	}
	117
e35f7362	118	static int build_id_cache__add_kcore(const char *filename, bool force)
fc1b691d	119	{
d77fac7f	120	char dir[32], sbuildid[SBUILD_ID_SIZE];
fc1b691d AH	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
0b5a7935	131	if (build_id_cache__kcore_buildid(from_dir, sbuildid) < 0)
fc1b691d AH	132	return -1;
fc1b691d AH	133
0a77582f MH	134	scnprintf(to_dir, sizeof(to_dir), "%s/%s/%s",
0a77582f MH	135	buildid_dir, DSO__NAME_KCORE, sbuildid);
fc1b691d	136
5173fbb8 AH	137	if (!force &&
5173fbb8 AH	138	!build_id_cache__kcore_existing(from_dir, to_dir, sizeof(to_dir))) {
fc1b691d AH	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
0a77582f MH	146	scnprintf(to_dir, sizeof(to_dir), "%s/%s/%s/%s",
0a77582f MH	147	buildid_dir, DSO__NAME_KCORE, sbuildid, dir);
fc1b691d AH	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
f045b8c4	175	static int build_id_cache__add_file(const char filename, struct nsinfo nsi)
ef12a141	176	{
d77fac7f	177	char sbuild_id[SBUILD_ID_SIZE];
f766819c	178	struct build_id bid;
ef12a141	179	int err;
f045b8c4	180	struct nscookie nsc;
ef12a141	181
f045b8c4	182	nsinfo__mountns_enter(nsi, &nsc);
f766819c	183	err = filename__read_build_id(filename, &bid);
f045b8c4 KJ	184	nsinfo__mountns_exit(&nsc);
f045b8c4 KJ	185	if (err < 0) {
ef12a141 ACM	186	pr_debug("Couldn't read a build-id in %s\n", filename);
	187	return -1;
	188	}
	189
bf541169	190	build_id__sprintf(&bid, sbuild_id);
f045b8c4	191	err = build_id_cache__add_s(sbuild_id, filename, nsi,
7dbf4dcf	192	false, false);
cc169c7c MH	193	pr_debug("Adding %s %s: %s\n", sbuild_id, filename,
cc169c7c MH	194	err ? "FAIL" : "Ok");
ef12a141 ACM	195	return err;
	196	}
	197
f045b8c4	198	static int build_id_cache__remove_file(const char filename, struct nsinfo nsi)
ef12a141	199	{
d77fac7f	200	char sbuild_id[SBUILD_ID_SIZE];
f766819c	201	struct build_id bid;
f045b8c4	202	struct nscookie nsc;
ef12a141 ACM	203
	204	int err;
	205
f045b8c4	206	nsinfo__mountns_enter(nsi, &nsc);
f766819c	207	err = filename__read_build_id(filename, &bid);
f045b8c4 KJ	208	nsinfo__mountns_exit(&nsc);
f045b8c4 KJ	209	if (err < 0) {
ef12a141 ACM	210	pr_debug("Couldn't read a build-id in %s\n", filename);
	211	return -1;
	212	}
	213
bf541169	214	build_id__sprintf(&bid, sbuild_id);
e35f7362	215	err = build_id_cache__remove_s(sbuild_id);
cc169c7c MH	216	pr_debug("Removing %s %s: %s\n", sbuild_id, filename,
cc169c7c MH	217	err ? "FAIL" : "Ok");
ef12a141 ACM	218
	219	return err;
	220	}
	221
f045b8c4	222	static int build_id_cache__purge_path(const char pathname, struct nsinfo nsi)
8d8c8e4c MH	223	{
	224	struct strlist *list;
	225	struct str_node *pos;
	226	int err;
	227
f045b8c4	228	err = build_id_cache__list_build_ids(pathname, nsi, &list);
8d8c8e4c MH	229	if (err)
	230	goto out;
	231
602a1f4d	232	strlist__for_each_entry(pos, list) {
8d8c8e4c	233	err = build_id_cache__remove_s(pos->s);
cc169c7c MH	234	pr_debug("Removing %s %s: %s\n", pos->s, pathname,
cc169c7c MH	235	err ? "FAIL" : "Ok");
8d8c8e4c MH	236	if (err)
	237	break;
	238	}
	239	strlist__delete(list);
	240
	241	out:
cc169c7c	242	pr_debug("Purging %s: %s\n", pathname, err ? "FAIL" : "Ok");
8d8c8e4c MH	243
	244	return err;
	245	}
	246
9a73c308 RB	247	static 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
fbb6976c ACM	275	static bool dso__missing_buildid_cache(struct dso *dso, int parm __maybe_unused)
	276	{
	277	char filename[PATH_MAX];
f766819c	278	struct build_id bid;
fbb6976c	279
d2396999	280	if (dso__build_id_filename(dso, filename, sizeof(filename), false) &&
f766819c	281	filename__read_build_id(filename, &bid) == -1) {
fbb6976c ACM	282	if (errno == ENOENT)
	283	return false;
	284
48000a1a	285	pr_warning("Problems with %s file, consider removing it from the cache\n",
fbb6976c	286	filename);
f766819c	287	} else if (memcmp(dso->bid.data, bid.data, bid.size)) {
48000a1a	288	pr_warning("Problems with %s file, consider removing it from the cache\n",
fbb6976c ACM	289	filename);
	290	}
	291
	292	return true;
	293	}
	294
e3ed75bb	295	static int build_id_cache__fprintf_missing(struct perf_session session, FILE fp)
fbb6976c	296	{
fbb6976c	297	perf_session__fprintf_dsos_buildid(session, fp, dso__missing_buildid_cache, 0);
fbb6976c ACM	298	return 0;
	299	}
	300
f045b8c4	301	static int build_id_cache__update_file(const char filename, struct nsinfo nsi)
eeb49845	302	{
d77fac7f	303	char sbuild_id[SBUILD_ID_SIZE];
f766819c	304	struct build_id bid;
f045b8c4	305	struct nscookie nsc;
eeb49845	306
f045b8c4	307	int err;
eeb49845	308
f045b8c4	309	nsinfo__mountns_enter(nsi, &nsc);
f766819c	310	err = filename__read_build_id(filename, &bid);
f045b8c4 KJ	311	nsinfo__mountns_exit(&nsc);
f045b8c4 KJ	312	if (err < 0) {
eeb49845 NK	313	pr_debug("Couldn't read a build-id in %s\n", filename);
	314	return -1;
	315	}
f045b8c4	316	err = 0;
eeb49845	317
bf541169	318	build_id__sprintf(&bid, sbuild_id);
a50d11a1 MH	319	if (build_id_cache__cached(sbuild_id))
	320	err = build_id_cache__remove_s(sbuild_id);
	321
e35f7362	322	if (!err)
f045b8c4 KJ	323	err = build_id_cache__add_s(sbuild_id, filename, nsi, false,
f045b8c4 KJ	324	false);
e35f7362	325
cc169c7c MH	326	pr_debug("Updating %s %s: %s\n", sbuild_id, filename,
cc169c7c MH	327	err ? "FAIL" : "Ok");
eeb49845 NK	328
	329	return err;
	330	}
	331
8e1e0d74 RB	332	static 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
e8a2061f JO	352	static int perf_buildid_cache_config(const char var, const char value, void *cb)
	353	{
	354	const char **debuginfod = cb;
	355
	356	if (!strcmp(var, "buildid-cache.debuginfod"))
	357	*debuginfod = strdup(value);
	358
	359	return 0;
	360	}
	361
b0ad8ea6	362	int cmd_buildid_cache(int argc, const char **argv)
ef12a141 ACM	363	{
	364	struct strlist *list;
	365	struct str_node *pos;
e8a2061f	366	int ret, ns_id = -1;
fbb6976c	367	bool force = false;
8e1e0d74 RB	368	bool list_files = false;
8e1e0d74 RB	369	bool opts_flag = false;
9a73c308	370	bool purge_all = false;
472cc83c	371	char const *add_name_list_str = NULL,
fbb6976c	372	*remove_name_list_str = NULL,
8d8c8e4c	373	*purge_name_list_str = NULL,
eeb49845	374	*missing_filename = NULL,
fc1b691d	375	*update_name_list_str = NULL,
e8a2061f JO	376	*kcore_filename = NULL,
e8a2061f JO	377	*debuginfod = NULL;
340481ad	378	char sbuf[STRERR_BUFSIZE];
eeb49845	379
8ceb41d7	380	struct perf_data data = {
e3ed75bb NK	381	.mode = PERF_DATA_MODE_READ,
	382	};
	383	struct perf_session *session = NULL;
f045b8c4	384	struct nsinfo *nsi = NULL;
e3ed75bb	385
472cc83c ACM	386	const struct option buildid_cache_options[] = {
	387	OPT_STRING('a', "add", &add_name_list_str,
	388	"file list", "file(s) to add"),
fc1b691d AH	389	OPT_STRING('k', "kcore", &kcore_filename,
fc1b691d AH	390	"file", "kcore file to add"),
472cc83c ACM	391	OPT_STRING('r', "remove", &remove_name_list_str, "file list",
472cc83c ACM	392	"file(s) to remove"),
4359dd88 TMR	393	OPT_STRING('p', "purge", &purge_name_list_str, "file list",
4359dd88 TMR	394	"file(s) to remove (remove old caches too)"),
9a73c308	395	OPT_BOOLEAN('P', "purge-all", &purge_all, "purge all cached files"),
8e1e0d74	396	OPT_BOOLEAN('l', "list", &list_files, "list all cached files"),
fbb6976c ACM	397	OPT_STRING('M', "missing", &missing_filename, "file",
	398	"to find missing build ids in the cache"),
	399	OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
eeb49845 NK	400	OPT_STRING('u', "update", &update_name_list_str, "file list",
eeb49845 NK	401	"file(s) to update"),
e8a2061f JO	402	OPT_STRING(0, "debuginfod", &debuginfod, "debuginfod url",
e8a2061f JO	403	"set debuginfod url"),
472cc83c	404	OPT_INCR('v', "verbose", &verbose, "be more verbose"),
f045b8c4	405	OPT_INTEGER(0, "target-ns", &ns_id, "target pid for namespace context"),
472cc83c ACM	406	OPT_END()
	407	};
	408	const char * const buildid_cache_usage[] = {
	409	"perf buildid-cache [<options>]",
	410	NULL
	411	};
	412
e8a2061f JO	413	ret = perf_config(perf_buildid_cache_config, &debuginfod);
	414	if (ret)
	415	return ret;
	416
472cc83c ACM	417	argc = parse_options(argc, argv, buildid_cache_options,
	418	buildid_cache_usage, 0);
	419
8e1e0d74 RB	420	opts_flag = add_name_list_str \|\| kcore_filename \|\|
8e1e0d74 RB	421	remove_name_list_str \|\| purge_name_list_str \|\|
9a73c308 RB	422	missing_filename \|\| update_name_list_str \|\|
9a73c308 RB	423	purge_all;
8e1e0d74 RB	424
8e1e0d74 RB	425	if (argc \|\| !(list_files \|\| opts_flag))
0497d0a8 MH	426	usage_with_options(buildid_cache_usage, buildid_cache_options);
0497d0a8 MH	427
e8a2061f JO	428	if (debuginfod) {
	429	pr_debug("DEBUGINFOD_URLS=%s\n", debuginfod);
	430	setenv("DEBUGINFOD_URLS", debuginfod, 1);
	431	}
	432
8e1e0d74 RB	433	/* -l is exclusive. It can not be used with other options. */
	434	if (list_files && opts_flag) {
	435	usage_with_options_msg(buildid_cache_usage,
	436	buildid_cache_options, "-l is exclusive.\n");
	437	}
	438
f045b8c4 KJ	439	if (ns_id > 0)
	440	nsi = nsinfo__new(ns_id);
	441
e3ed75bb	442	if (missing_filename) {
2d4f2799 JO	443	data.path = missing_filename;
2d4f2799 JO	444	data.force = force;
e3ed75bb	445
8ceb41d7	446	session = perf_session__new(&data, false, NULL);
6ef81c55 MI	447	if (IS_ERR(session))
6ef81c55 MI	448	return PTR_ERR(session);
e3ed75bb NK	449	}
e3ed75bb NK	450
0a7e6d1b	451	if (symbol__init(session ? &session->header.env : NULL) < 0)
e3ed75bb	452	goto out;
472cc83c ACM	453
472cc83c ACM	454	setup_pager();
ef12a141	455
8e1e0d74 RB	456	if (list_files) {
	457	ret = build_id_cache__show_all();
	458	goto out;
	459	}
	460
ef12a141	461	if (add_name_list_str) {
4a77e218	462	list = strlist__new(add_name_list_str, NULL);
ef12a141	463	if (list) {
602a1f4d	464	strlist__for_each_entry(pos, list)
f045b8c4	465	if (build_id_cache__add_file(pos->s, nsi)) {
ef12a141 ACM	466	if (errno == EEXIST) {
	467	pr_debug("%s already in the cache\n",
	468	pos->s);
	469	continue;
	470	}
	471	pr_warning("Couldn't add %s: %s\n",
c8b5f2c9	472	pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
ef12a141 ACM	473	}
	474
	475	strlist__delete(list);
	476	}
	477	}
	478
	479	if (remove_name_list_str) {
4a77e218	480	list = strlist__new(remove_name_list_str, NULL);
ef12a141	481	if (list) {
602a1f4d	482	strlist__for_each_entry(pos, list)
f045b8c4	483	if (build_id_cache__remove_file(pos->s, nsi)) {
ef12a141 ACM	484	if (errno == ENOENT) {
	485	pr_debug("%s wasn't in the cache\n",
	486	pos->s);
	487	continue;
	488	}
	489	pr_warning("Couldn't remove %s: %s\n",
c8b5f2c9	490	pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
ef12a141 ACM	491	}
	492
	493	strlist__delete(list);
	494	}
	495	}
	496
8d8c8e4c	497	if (purge_name_list_str) {
4a77e218	498	list = strlist__new(purge_name_list_str, NULL);
8d8c8e4c	499	if (list) {
602a1f4d	500	strlist__for_each_entry(pos, list)
f045b8c4	501	if (build_id_cache__purge_path(pos->s, nsi)) {
8d8c8e4c MH	502	if (errno == ENOENT) {
	503	pr_debug("%s wasn't in the cache\n",
	504	pos->s);
	505	continue;
	506	}
	507	pr_warning("Couldn't remove %s: %s\n",
c8b5f2c9	508	pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
8d8c8e4c MH	509	}
	510
	511	strlist__delete(list);
	512	}
	513	}
	514
d8ed87bc RB	515	if (purge_all) {
	516	if (build_id_cache__purge_all()) {
	517	pr_warning("Couldn't remove some caches. Error: %s.\n",
	518	str_error_r(errno, sbuf, sizeof(sbuf)));
	519	}
	520	}
9a73c308	521
fbb6976c	522	if (missing_filename)
e3ed75bb	523	ret = build_id_cache__fprintf_missing(session, stdout);
fbb6976c	524
eeb49845	525	if (update_name_list_str) {
4a77e218	526	list = strlist__new(update_name_list_str, NULL);
eeb49845	527	if (list) {
602a1f4d	528	strlist__for_each_entry(pos, list)
f045b8c4	529	if (build_id_cache__update_file(pos->s, nsi)) {
eeb49845 NK	530	if (errno == ENOENT) {
	531	pr_debug("%s wasn't in the cache\n",
	532	pos->s);
	533	continue;
	534	}
	535	pr_warning("Couldn't update %s: %s\n",
c8b5f2c9	536	pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
eeb49845 NK	537	}
	538
	539	strlist__delete(list);
	540	}
	541	}
	542
e35f7362	543	if (kcore_filename && build_id_cache__add_kcore(kcore_filename, force))
fc1b691d AH	544	pr_warning("Couldn't add %s\n", kcore_filename);
fc1b691d AH	545
e3ed75bb	546	out:
e1446551	547	perf_session__delete(session);
f045b8c4	548	nsinfo__zput(nsi);
e3ed75bb	549
fbb6976c	550	return ret;
ef12a141	551	}