[mirror_ubuntu-hirsute-kernel.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 <acme@redhat.com>
 */
#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/cache.h"
#include "util/debug.h"
#include "util/header.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"

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];
	u8 build_id[BUILD_ID_SIZE];
	int err;
	struct nscookie nsc;

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

	build_id__sprintf(build_id, sizeof(build_id), 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)
{
	u8 build_id[BUILD_ID_SIZE];
	char sbuild_id[SBUILD_ID_SIZE];
	struct nscookie nsc;

	int err;

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

	build_id__sprintf(build_id, sizeof(build_id), 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];
	u8 build_id[BUILD_ID_SIZE];

	if (dso__build_id_filename(dso, filename, sizeof(filename), false) &&
	    filename__read_build_id(filename, build_id,
				    sizeof(build_id)) != sizeof(build_id)) {
		if (errno == ENOENT)
			return false;

		pr_warning("Problems with %s file, consider removing it from the cache\n",
			   filename);
	} else if (memcmp(dso->build_id, build_id, sizeof(dso->build_id))) {
		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)
{
	u8 build_id[BUILD_ID_SIZE];
	char sbuild_id[SBUILD_ID_SIZE];
	struct nscookie nsc;

	int err;

	nsinfo__mountns_enter(nsi, &nsc);
	err = filename__read_build_id(filename, &build_id, sizeof(build_id));
	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(build_id, sizeof(build_id), 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;
}

int cmd_buildid_cache(int argc, const char **argv)
{
	struct strlist *list;
	struct str_node *pos;
	int ret = 0;
	int 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;
	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_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
	};

	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);

	/* -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 (session == NULL)
			return -1;
	}

	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 <acme@redhat.com>
	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/cache.h"
	19	#include "util/debug.h"
	20	#include "util/header.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"
ef12a141	30
fc1b691d AH	31	static int build_id_cache__kcore_buildid(const char proc_dir, char sbuildid)
	32	{
	33	char root_dir[PATH_MAX];
fc1b691d AH	34	char *p;
	35
	36	strlcpy(root_dir, proc_dir, sizeof(root_dir));
	37
	38	p = strrchr(root_dir, '/');
	39	if (!p)
	40	return -1;
	41	*p = '\0';
0b5a7935	42	return sysfs__sprintf_build_id(root_dir, sbuildid);
fc1b691d AH	43	}
	44
	45	static int build_id_cache__kcore_dir(char *dir, size_t sz)
	46	{
37b20151	47	return fetch_current_timestamp(dir, sz);
fc1b691d AH	48	}
fc1b691d AH	49
d3b70220 AH	50	static bool same_kallsyms_reloc(const char from_dir, char to_dir)
	51	{
	52	char from[PATH_MAX];
	53	char to[PATH_MAX];
	54	const char *name;
	55	u64 addr1 = 0, addr2 = 0;
b843f62a	56	int i, err = -1;
d3b70220 AH	57
	58	scnprintf(from, sizeof(from), "%s/kallsyms", from_dir);
	59	scnprintf(to, sizeof(to), "%s/kallsyms", to_dir);
	60
	61	for (i = 0; (name = ref_reloc_sym_names[i]) != NULL; i++) {
b843f62a ACM	62	err = kallsyms__get_function_start(from, name, &addr1);
b843f62a ACM	63	if (!err)
d3b70220 AH	64	break;
	65	}
	66
b843f62a ACM	67	if (err)
	68	return false;
	69
	70	if (kallsyms__get_function_start(to, name, &addr2))
	71	return false;
d3b70220 AH	72
	73	return addr1 == addr2;
	74	}
	75
fc1b691d AH	76	static int build_id_cache__kcore_existing(const char from_dir, char to_dir,
	77	size_t to_dir_sz)
	78	{
	79	char from[PATH_MAX];
	80	char to[PATH_MAX];
d3b70220	81	char to_subdir[PATH_MAX];
fc1b691d AH	82	struct dirent *dent;
	83	int ret = -1;
	84	DIR *d;
	85
	86	d = opendir(to_dir);
	87	if (!d)
	88	return -1;
	89
	90	scnprintf(from, sizeof(from), "%s/modules", from_dir);
	91
	92	while (1) {
	93	dent = readdir(d);
	94	if (!dent)
	95	break;
	96	if (dent->d_type != DT_DIR)
	97	continue;
	98	scnprintf(to, sizeof(to), "%s/%s/modules", to_dir,
	99	dent->d_name);
d3b70220 AH	100	scnprintf(to_subdir, sizeof(to_subdir), "%s/%s",
	101	to_dir, dent->d_name);
	102	if (!compare_proc_modules(from, to) &&
	103	same_kallsyms_reloc(from_dir, to_subdir)) {
	104	strlcpy(to_dir, to_subdir, to_dir_sz);
fc1b691d AH	105	ret = 0;
	106	break;
	107	}
	108	}
	109
	110	closedir(d);
	111
	112	return ret;
	113	}
	114
e35f7362	115	static int build_id_cache__add_kcore(const char *filename, bool force)
fc1b691d	116	{
d77fac7f	117	char dir[32], sbuildid[SBUILD_ID_SIZE];
fc1b691d AH	118	char from_dir[PATH_MAX], to_dir[PATH_MAX];
	119	char *p;
	120
	121	strlcpy(from_dir, filename, sizeof(from_dir));
	122
	123	p = strrchr(from_dir, '/');
	124	if (!p \|\| strcmp(p + 1, "kcore"))
	125	return -1;
	126	*p = '\0';
	127
0b5a7935	128	if (build_id_cache__kcore_buildid(from_dir, sbuildid) < 0)
fc1b691d AH	129	return -1;
fc1b691d AH	130
0a77582f MH	131	scnprintf(to_dir, sizeof(to_dir), "%s/%s/%s",
0a77582f MH	132	buildid_dir, DSO__NAME_KCORE, sbuildid);
fc1b691d	133
5173fbb8 AH	134	if (!force &&
5173fbb8 AH	135	!build_id_cache__kcore_existing(from_dir, to_dir, sizeof(to_dir))) {
fc1b691d AH	136	pr_debug("same kcore found in %s\n", to_dir);
	137	return 0;
	138	}
	139
	140	if (build_id_cache__kcore_dir(dir, sizeof(dir)))
	141	return -1;
	142
0a77582f MH	143	scnprintf(to_dir, sizeof(to_dir), "%s/%s/%s/%s",
0a77582f MH	144	buildid_dir, DSO__NAME_KCORE, sbuildid, dir);
fc1b691d AH	145
	146	if (mkdir_p(to_dir, 0755))
	147	return -1;
	148
	149	if (kcore_copy(from_dir, to_dir)) {
	150	/* Remove YYYYmmddHHMMSShh directory */
	151	if (!rmdir(to_dir)) {
	152	p = strrchr(to_dir, '/');
	153	if (p)
	154	*p = '\0';
	155	/* Try to remove buildid directory */
	156	if (!rmdir(to_dir)) {
	157	p = strrchr(to_dir, '/');
	158	if (p)
	159	*p = '\0';
	160	/* Try to remove [kernel.kcore] directory */
	161	rmdir(to_dir);
	162	}
	163	}
	164	return -1;
	165	}
	166
	167	pr_debug("kcore added to build-id cache directory %s\n", to_dir);
	168
	169	return 0;
	170	}
	171
f045b8c4	172	static int build_id_cache__add_file(const char filename, struct nsinfo nsi)
ef12a141	173	{
d77fac7f	174	char sbuild_id[SBUILD_ID_SIZE];
ef12a141 ACM	175	u8 build_id[BUILD_ID_SIZE];
ef12a141 ACM	176	int err;
f045b8c4	177	struct nscookie nsc;
ef12a141	178
f045b8c4 KJ	179	nsinfo__mountns_enter(nsi, &nsc);
	180	err = filename__read_build_id(filename, &build_id, sizeof(build_id));
	181	nsinfo__mountns_exit(&nsc);
	182	if (err < 0) {
ef12a141 ACM	183	pr_debug("Couldn't read a build-id in %s\n", filename);
	184	return -1;
	185	}
	186
	187	build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
f045b8c4	188	err = build_id_cache__add_s(sbuild_id, filename, nsi,
7dbf4dcf	189	false, false);
cc169c7c MH	190	pr_debug("Adding %s %s: %s\n", sbuild_id, filename,
cc169c7c MH	191	err ? "FAIL" : "Ok");
ef12a141 ACM	192	return err;
	193	}
	194
f045b8c4	195	static int build_id_cache__remove_file(const char filename, struct nsinfo nsi)
ef12a141 ACM	196	{
ef12a141 ACM	197	u8 build_id[BUILD_ID_SIZE];
d77fac7f	198	char sbuild_id[SBUILD_ID_SIZE];
f045b8c4	199	struct nscookie nsc;
ef12a141 ACM	200
	201	int err;
	202
f045b8c4 KJ	203	nsinfo__mountns_enter(nsi, &nsc);
	204	err = filename__read_build_id(filename, &build_id, sizeof(build_id));
	205	nsinfo__mountns_exit(&nsc);
	206	if (err < 0) {
ef12a141 ACM	207	pr_debug("Couldn't read a build-id in %s\n", filename);
	208	return -1;
	209	}
	210
	211	build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
e35f7362	212	err = build_id_cache__remove_s(sbuild_id);
cc169c7c MH	213	pr_debug("Removing %s %s: %s\n", sbuild_id, filename,
cc169c7c MH	214	err ? "FAIL" : "Ok");
ef12a141 ACM	215
	216	return err;
	217	}
	218
f045b8c4	219	static int build_id_cache__purge_path(const char pathname, struct nsinfo nsi)
8d8c8e4c MH	220	{
	221	struct strlist *list;
	222	struct str_node *pos;
	223	int err;
	224
f045b8c4	225	err = build_id_cache__list_build_ids(pathname, nsi, &list);
8d8c8e4c MH	226	if (err)
	227	goto out;
	228
602a1f4d	229	strlist__for_each_entry(pos, list) {
8d8c8e4c	230	err = build_id_cache__remove_s(pos->s);
cc169c7c MH	231	pr_debug("Removing %s %s: %s\n", pos->s, pathname,
cc169c7c MH	232	err ? "FAIL" : "Ok");
8d8c8e4c MH	233	if (err)
	234	break;
	235	}
	236	strlist__delete(list);
	237
	238	out:
cc169c7c	239	pr_debug("Purging %s: %s\n", pathname, err ? "FAIL" : "Ok");
8d8c8e4c MH	240
	241	return err;
	242	}
	243
9a73c308 RB	244	static int build_id_cache__purge_all(void)
	245	{
	246	struct strlist *list;
	247	struct str_node *pos;
	248	int err = 0;
	249	char *buf;
	250
	251	list = build_id_cache__list_all(false);
	252	if (!list) {
	253	pr_debug("Failed to get buildids: -%d\n", errno);
	254	return -EINVAL;
	255	}
	256
	257	strlist__for_each_entry(pos, list) {
	258	buf = build_id_cache__origname(pos->s);
	259	err = build_id_cache__remove_s(pos->s);
	260	pr_debug("Removing %s (%s): %s\n", buf, pos->s,
	261	err ? "FAIL" : "Ok");
	262	free(buf);
	263	if (err)
	264	break;
	265	}
	266	strlist__delete(list);
	267
	268	pr_debug("Purged all: %s\n", err ? "FAIL" : "Ok");
	269	return err;
	270	}
	271
fbb6976c ACM	272	static bool dso__missing_buildid_cache(struct dso *dso, int parm __maybe_unused)
	273	{
	274	char filename[PATH_MAX];
	275	u8 build_id[BUILD_ID_SIZE];
	276
d2396999	277	if (dso__build_id_filename(dso, filename, sizeof(filename), false) &&
fbb6976c ACM	278	filename__read_build_id(filename, build_id,
	279	sizeof(build_id)) != sizeof(build_id)) {
	280	if (errno == ENOENT)
	281	return false;
	282
48000a1a	283	pr_warning("Problems with %s file, consider removing it from the cache\n",
fbb6976c ACM	284	filename);
fbb6976c ACM	285	} else if (memcmp(dso->build_id, build_id, sizeof(dso->build_id))) {
48000a1a	286	pr_warning("Problems with %s file, consider removing it from the cache\n",
fbb6976c ACM	287	filename);
	288	}
	289
	290	return true;
	291	}
	292
e3ed75bb	293	static int build_id_cache__fprintf_missing(struct perf_session session, FILE fp)
fbb6976c	294	{
fbb6976c	295	perf_session__fprintf_dsos_buildid(session, fp, dso__missing_buildid_cache, 0);
fbb6976c ACM	296	return 0;
	297	}
	298
f045b8c4	299	static int build_id_cache__update_file(const char filename, struct nsinfo nsi)
eeb49845 NK	300	{
eeb49845 NK	301	u8 build_id[BUILD_ID_SIZE];
d77fac7f	302	char sbuild_id[SBUILD_ID_SIZE];
f045b8c4	303	struct nscookie nsc;
eeb49845	304
f045b8c4	305	int err;
eeb49845	306
f045b8c4 KJ	307	nsinfo__mountns_enter(nsi, &nsc);
	308	err = filename__read_build_id(filename, &build_id, sizeof(build_id));
	309	nsinfo__mountns_exit(&nsc);
	310	if (err < 0) {
eeb49845 NK	311	pr_debug("Couldn't read a build-id in %s\n", filename);
	312	return -1;
	313	}
f045b8c4	314	err = 0;
eeb49845 NK	315
eeb49845 NK	316	build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
a50d11a1 MH	317	if (build_id_cache__cached(sbuild_id))
	318	err = build_id_cache__remove_s(sbuild_id);
	319
e35f7362	320	if (!err)
f045b8c4 KJ	321	err = build_id_cache__add_s(sbuild_id, filename, nsi, false,
f045b8c4 KJ	322	false);
e35f7362	323
cc169c7c MH	324	pr_debug("Updating %s %s: %s\n", sbuild_id, filename,
cc169c7c MH	325	err ? "FAIL" : "Ok");
eeb49845 NK	326
	327	return err;
	328	}
	329
8e1e0d74 RB	330	static int build_id_cache__show_all(void)
	331	{
	332	struct strlist *bidlist;
	333	struct str_node *nd;
	334	char *buf;
	335
	336	bidlist = build_id_cache__list_all(true);
	337	if (!bidlist) {
	338	pr_debug("Failed to get buildids: -%d\n", errno);
	339	return -1;
	340	}
	341	strlist__for_each_entry(nd, bidlist) {
	342	buf = build_id_cache__origname(nd->s);
	343	fprintf(stdout, "%s %s\n", nd->s, buf);
	344	free(buf);
	345	}
	346	strlist__delete(bidlist);
	347	return 0;
	348	}
	349
b0ad8ea6	350	int cmd_buildid_cache(int argc, const char **argv)
ef12a141 ACM	351	{
	352	struct strlist *list;
	353	struct str_node *pos;
fbb6976c	354	int ret = 0;
f045b8c4	355	int ns_id = -1;
fbb6976c	356	bool force = false;
8e1e0d74 RB	357	bool list_files = false;
8e1e0d74 RB	358	bool opts_flag = false;
9a73c308	359	bool purge_all = false;
472cc83c	360	char const *add_name_list_str = NULL,
fbb6976c	361	*remove_name_list_str = NULL,
8d8c8e4c	362	*purge_name_list_str = NULL,
eeb49845	363	*missing_filename = NULL,
fc1b691d	364	*update_name_list_str = NULL,
eec5a688	365	*kcore_filename = NULL;
340481ad	366	char sbuf[STRERR_BUFSIZE];
eeb49845	367
8ceb41d7	368	struct perf_data data = {
e3ed75bb NK	369	.mode = PERF_DATA_MODE_READ,
	370	};
	371	struct perf_session *session = NULL;
f045b8c4	372	struct nsinfo *nsi = NULL;
e3ed75bb	373
472cc83c ACM	374	const struct option buildid_cache_options[] = {
	375	OPT_STRING('a', "add", &add_name_list_str,
	376	"file list", "file(s) to add"),
fc1b691d AH	377	OPT_STRING('k', "kcore", &kcore_filename,
fc1b691d AH	378	"file", "kcore file to add"),
472cc83c ACM	379	OPT_STRING('r', "remove", &remove_name_list_str, "file list",
472cc83c ACM	380	"file(s) to remove"),
4359dd88 TMR	381	OPT_STRING('p', "purge", &purge_name_list_str, "file list",
4359dd88 TMR	382	"file(s) to remove (remove old caches too)"),
9a73c308	383	OPT_BOOLEAN('P', "purge-all", &purge_all, "purge all cached files"),
8e1e0d74	384	OPT_BOOLEAN('l', "list", &list_files, "list all cached files"),
fbb6976c ACM	385	OPT_STRING('M', "missing", &missing_filename, "file",
	386	"to find missing build ids in the cache"),
	387	OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
eeb49845 NK	388	OPT_STRING('u', "update", &update_name_list_str, "file list",
eeb49845 NK	389	"file(s) to update"),
472cc83c	390	OPT_INCR('v', "verbose", &verbose, "be more verbose"),
f045b8c4	391	OPT_INTEGER(0, "target-ns", &ns_id, "target pid for namespace context"),
472cc83c ACM	392	OPT_END()
	393	};
	394	const char * const buildid_cache_usage[] = {
	395	"perf buildid-cache [<options>]",
	396	NULL
	397	};
	398
	399	argc = parse_options(argc, argv, buildid_cache_options,
	400	buildid_cache_usage, 0);
	401
8e1e0d74 RB	402	opts_flag = add_name_list_str \|\| kcore_filename \|\|
8e1e0d74 RB	403	remove_name_list_str \|\| purge_name_list_str \|\|
9a73c308 RB	404	missing_filename \|\| update_name_list_str \|\|
9a73c308 RB	405	purge_all;
8e1e0d74 RB	406
8e1e0d74 RB	407	if (argc \|\| !(list_files \|\| opts_flag))
0497d0a8 MH	408	usage_with_options(buildid_cache_usage, buildid_cache_options);
0497d0a8 MH	409
8e1e0d74 RB	410	/* -l is exclusive. It can not be used with other options. */
	411	if (list_files && opts_flag) {
	412	usage_with_options_msg(buildid_cache_usage,
	413	buildid_cache_options, "-l is exclusive.\n");
	414	}
	415
f045b8c4 KJ	416	if (ns_id > 0)
	417	nsi = nsinfo__new(ns_id);
	418
e3ed75bb	419	if (missing_filename) {
2d4f2799 JO	420	data.path = missing_filename;
2d4f2799 JO	421	data.force = force;
e3ed75bb	422
8ceb41d7	423	session = perf_session__new(&data, false, NULL);
e3ed75bb NK	424	if (session == NULL)
	425	return -1;
	426	}
	427
0a7e6d1b	428	if (symbol__init(session ? &session->header.env : NULL) < 0)
e3ed75bb	429	goto out;
472cc83c ACM	430
472cc83c ACM	431	setup_pager();
ef12a141	432
8e1e0d74 RB	433	if (list_files) {
	434	ret = build_id_cache__show_all();
	435	goto out;
	436	}
	437
ef12a141	438	if (add_name_list_str) {
4a77e218	439	list = strlist__new(add_name_list_str, NULL);
ef12a141	440	if (list) {
602a1f4d	441	strlist__for_each_entry(pos, list)
f045b8c4	442	if (build_id_cache__add_file(pos->s, nsi)) {
ef12a141 ACM	443	if (errno == EEXIST) {
	444	pr_debug("%s already in the cache\n",
	445	pos->s);
	446	continue;
	447	}
	448	pr_warning("Couldn't add %s: %s\n",
c8b5f2c9	449	pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
ef12a141 ACM	450	}
	451
	452	strlist__delete(list);
	453	}
	454	}
	455
	456	if (remove_name_list_str) {
4a77e218	457	list = strlist__new(remove_name_list_str, NULL);
ef12a141	458	if (list) {
602a1f4d	459	strlist__for_each_entry(pos, list)
f045b8c4	460	if (build_id_cache__remove_file(pos->s, nsi)) {
ef12a141 ACM	461	if (errno == ENOENT) {
	462	pr_debug("%s wasn't in the cache\n",
	463	pos->s);
	464	continue;
	465	}
	466	pr_warning("Couldn't remove %s: %s\n",
c8b5f2c9	467	pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
ef12a141 ACM	468	}
	469
	470	strlist__delete(list);
	471	}
	472	}
	473
8d8c8e4c	474	if (purge_name_list_str) {
4a77e218	475	list = strlist__new(purge_name_list_str, NULL);
8d8c8e4c	476	if (list) {
602a1f4d	477	strlist__for_each_entry(pos, list)
f045b8c4	478	if (build_id_cache__purge_path(pos->s, nsi)) {
8d8c8e4c MH	479	if (errno == ENOENT) {
	480	pr_debug("%s wasn't in the cache\n",
	481	pos->s);
	482	continue;
	483	}
	484	pr_warning("Couldn't remove %s: %s\n",
c8b5f2c9	485	pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
8d8c8e4c MH	486	}
	487
	488	strlist__delete(list);
	489	}
	490	}
	491
d8ed87bc RB	492	if (purge_all) {
	493	if (build_id_cache__purge_all()) {
	494	pr_warning("Couldn't remove some caches. Error: %s.\n",
	495	str_error_r(errno, sbuf, sizeof(sbuf)));
	496	}
	497	}
9a73c308	498
fbb6976c	499	if (missing_filename)
e3ed75bb	500	ret = build_id_cache__fprintf_missing(session, stdout);
fbb6976c	501
eeb49845	502	if (update_name_list_str) {
4a77e218	503	list = strlist__new(update_name_list_str, NULL);
eeb49845	504	if (list) {
602a1f4d	505	strlist__for_each_entry(pos, list)
f045b8c4	506	if (build_id_cache__update_file(pos->s, nsi)) {
eeb49845 NK	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 update %s: %s\n",
c8b5f2c9	513	pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
eeb49845 NK	514	}
	515
	516	strlist__delete(list);
	517	}
	518	}
	519
e35f7362	520	if (kcore_filename && build_id_cache__add_kcore(kcore_filename, force))
fc1b691d AH	521	pr_warning("Couldn't add %s\n", kcore_filename);
fc1b691d AH	522
e3ed75bb	523	out:
e1446551	524	perf_session__delete(session);
f045b8c4	525	nsinfo__zput(nsi);
e3ed75bb	526
fbb6976c	527	return ret;
ef12a141	528	}