[linux-2.6-block.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 "perf.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/symbol.h"
#include "util/time-utils.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.file.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 ACM	16	#include "builtin.h"
ef12a141 ACM	17	#include "perf.h"
f045b8c4	18	#include "namespaces.h"
ef12a141 ACM	19	#include "util/cache.h"
	20	#include "util/debug.h"
	21	#include "util/header.h"
4b6ab94e	22	#include <subcmd/parse-options.h>
ef12a141	23	#include "util/strlist.h"
ebb296c2	24	#include "util/build-id.h"
fbb6976c	25	#include "util/session.h"
4383db88	26	#include "util/symbol.h"
c5e4027e	27	#include "util/time-utils.h"
8e1e0d74	28	#include "util/probe-file.h"
ef12a141	29
fc1b691d AH	30	static int build_id_cache__kcore_buildid(const char proc_dir, char sbuildid)
	31	{
	32	char root_dir[PATH_MAX];
fc1b691d AH	33	char *p;
	34
	35	strlcpy(root_dir, proc_dir, sizeof(root_dir));
	36
	37	p = strrchr(root_dir, '/');
	38	if (!p)
	39	return -1;
	40	*p = '\0';
0b5a7935	41	return sysfs__sprintf_build_id(root_dir, sbuildid);
fc1b691d AH	42	}
	43
	44	static int build_id_cache__kcore_dir(char *dir, size_t sz)
	45	{
37b20151	46	return fetch_current_timestamp(dir, sz);
fc1b691d AH	47	}
fc1b691d AH	48
d3b70220 AH	49	static bool same_kallsyms_reloc(const char from_dir, char to_dir)
	50	{
	51	char from[PATH_MAX];
	52	char to[PATH_MAX];
	53	const char *name;
	54	u64 addr1 = 0, addr2 = 0;
b843f62a	55	int i, err = -1;
d3b70220 AH	56
	57	scnprintf(from, sizeof(from), "%s/kallsyms", from_dir);
	58	scnprintf(to, sizeof(to), "%s/kallsyms", to_dir);
	59
	60	for (i = 0; (name = ref_reloc_sym_names[i]) != NULL; i++) {
b843f62a ACM	61	err = kallsyms__get_function_start(from, name, &addr1);
b843f62a ACM	62	if (!err)
d3b70220 AH	63	break;
	64	}
	65
b843f62a ACM	66	if (err)
	67	return false;
	68
	69	if (kallsyms__get_function_start(to, name, &addr2))
	70	return false;
d3b70220 AH	71
	72	return addr1 == addr2;
	73	}
	74
fc1b691d AH	75	static int build_id_cache__kcore_existing(const char from_dir, char to_dir,
	76	size_t to_dir_sz)
	77	{
	78	char from[PATH_MAX];
	79	char to[PATH_MAX];
d3b70220	80	char to_subdir[PATH_MAX];
fc1b691d AH	81	struct dirent *dent;
	82	int ret = -1;
	83	DIR *d;
	84
	85	d = opendir(to_dir);
	86	if (!d)
	87	return -1;
	88
	89	scnprintf(from, sizeof(from), "%s/modules", from_dir);
	90
	91	while (1) {
	92	dent = readdir(d);
	93	if (!dent)
	94	break;
	95	if (dent->d_type != DT_DIR)
	96	continue;
	97	scnprintf(to, sizeof(to), "%s/%s/modules", to_dir,
	98	dent->d_name);
d3b70220 AH	99	scnprintf(to_subdir, sizeof(to_subdir), "%s/%s",
	100	to_dir, dent->d_name);
	101	if (!compare_proc_modules(from, to) &&
	102	same_kallsyms_reloc(from_dir, to_subdir)) {
	103	strlcpy(to_dir, to_subdir, to_dir_sz);
fc1b691d AH	104	ret = 0;
	105	break;
	106	}
	107	}
	108
	109	closedir(d);
	110
	111	return ret;
	112	}
	113
e35f7362	114	static int build_id_cache__add_kcore(const char *filename, bool force)
fc1b691d	115	{
d77fac7f	116	char dir[32], sbuildid[SBUILD_ID_SIZE];
fc1b691d AH	117	char from_dir[PATH_MAX], to_dir[PATH_MAX];
	118	char *p;
	119
	120	strlcpy(from_dir, filename, sizeof(from_dir));
	121
	122	p = strrchr(from_dir, '/');
	123	if (!p \|\| strcmp(p + 1, "kcore"))
	124	return -1;
	125	*p = '\0';
	126
0b5a7935	127	if (build_id_cache__kcore_buildid(from_dir, sbuildid) < 0)
fc1b691d AH	128	return -1;
fc1b691d AH	129
0a77582f MH	130	scnprintf(to_dir, sizeof(to_dir), "%s/%s/%s",
0a77582f MH	131	buildid_dir, DSO__NAME_KCORE, sbuildid);
fc1b691d	132
5173fbb8 AH	133	if (!force &&
5173fbb8 AH	134	!build_id_cache__kcore_existing(from_dir, to_dir, sizeof(to_dir))) {
fc1b691d AH	135	pr_debug("same kcore found in %s\n", to_dir);
	136	return 0;
	137	}
	138
	139	if (build_id_cache__kcore_dir(dir, sizeof(dir)))
	140	return -1;
	141
0a77582f MH	142	scnprintf(to_dir, sizeof(to_dir), "%s/%s/%s/%s",
0a77582f MH	143	buildid_dir, DSO__NAME_KCORE, sbuildid, dir);
fc1b691d AH	144
	145	if (mkdir_p(to_dir, 0755))
	146	return -1;
	147
	148	if (kcore_copy(from_dir, to_dir)) {
	149	/* Remove YYYYmmddHHMMSShh directory */
	150	if (!rmdir(to_dir)) {
	151	p = strrchr(to_dir, '/');
	152	if (p)
	153	*p = '\0';
	154	/* Try to remove buildid directory */
	155	if (!rmdir(to_dir)) {
	156	p = strrchr(to_dir, '/');
	157	if (p)
	158	*p = '\0';
	159	/* Try to remove [kernel.kcore] directory */
	160	rmdir(to_dir);
	161	}
	162	}
	163	return -1;
	164	}
	165
	166	pr_debug("kcore added to build-id cache directory %s\n", to_dir);
	167
	168	return 0;
	169	}
	170
f045b8c4	171	static int build_id_cache__add_file(const char filename, struct nsinfo nsi)
ef12a141	172	{
d77fac7f	173	char sbuild_id[SBUILD_ID_SIZE];
ef12a141 ACM	174	u8 build_id[BUILD_ID_SIZE];
ef12a141 ACM	175	int err;
f045b8c4	176	struct nscookie nsc;
ef12a141	177
f045b8c4 KJ	178	nsinfo__mountns_enter(nsi, &nsc);
	179	err = filename__read_build_id(filename, &build_id, sizeof(build_id));
	180	nsinfo__mountns_exit(&nsc);
	181	if (err < 0) {
ef12a141 ACM	182	pr_debug("Couldn't read a build-id in %s\n", filename);
	183	return -1;
	184	}
	185
	186	build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
f045b8c4	187	err = build_id_cache__add_s(sbuild_id, filename, nsi,
7dbf4dcf	188	false, false);
cc169c7c MH	189	pr_debug("Adding %s %s: %s\n", sbuild_id, filename,
cc169c7c MH	190	err ? "FAIL" : "Ok");
ef12a141 ACM	191	return err;
	192	}
	193
f045b8c4	194	static int build_id_cache__remove_file(const char filename, struct nsinfo nsi)
ef12a141 ACM	195	{
ef12a141 ACM	196	u8 build_id[BUILD_ID_SIZE];
d77fac7f	197	char sbuild_id[SBUILD_ID_SIZE];
f045b8c4	198	struct nscookie nsc;
ef12a141 ACM	199
	200	int err;
	201
f045b8c4 KJ	202	nsinfo__mountns_enter(nsi, &nsc);
	203	err = filename__read_build_id(filename, &build_id, sizeof(build_id));
	204	nsinfo__mountns_exit(&nsc);
	205	if (err < 0) {
ef12a141 ACM	206	pr_debug("Couldn't read a build-id in %s\n", filename);
	207	return -1;
	208	}
	209
	210	build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
e35f7362	211	err = build_id_cache__remove_s(sbuild_id);
cc169c7c MH	212	pr_debug("Removing %s %s: %s\n", sbuild_id, filename,
cc169c7c MH	213	err ? "FAIL" : "Ok");
ef12a141 ACM	214
	215	return err;
	216	}
	217
f045b8c4	218	static int build_id_cache__purge_path(const char pathname, struct nsinfo nsi)
8d8c8e4c MH	219	{
	220	struct strlist *list;
	221	struct str_node *pos;
	222	int err;
	223
f045b8c4	224	err = build_id_cache__list_build_ids(pathname, nsi, &list);
8d8c8e4c MH	225	if (err)
	226	goto out;
	227
602a1f4d	228	strlist__for_each_entry(pos, list) {
8d8c8e4c	229	err = build_id_cache__remove_s(pos->s);
cc169c7c MH	230	pr_debug("Removing %s %s: %s\n", pos->s, pathname,
cc169c7c MH	231	err ? "FAIL" : "Ok");
8d8c8e4c MH	232	if (err)
	233	break;
	234	}
	235	strlist__delete(list);
	236
	237	out:
cc169c7c	238	pr_debug("Purging %s: %s\n", pathname, err ? "FAIL" : "Ok");
8d8c8e4c MH	239
	240	return err;
	241	}
	242
9a73c308 RB	243	static int build_id_cache__purge_all(void)
	244	{
	245	struct strlist *list;
	246	struct str_node *pos;
	247	int err = 0;
	248	char *buf;
	249
	250	list = build_id_cache__list_all(false);
	251	if (!list) {
	252	pr_debug("Failed to get buildids: -%d\n", errno);
	253	return -EINVAL;
	254	}
	255
	256	strlist__for_each_entry(pos, list) {
	257	buf = build_id_cache__origname(pos->s);
	258	err = build_id_cache__remove_s(pos->s);
	259	pr_debug("Removing %s (%s): %s\n", buf, pos->s,
	260	err ? "FAIL" : "Ok");
	261	free(buf);
	262	if (err)
	263	break;
	264	}
	265	strlist__delete(list);
	266
	267	pr_debug("Purged all: %s\n", err ? "FAIL" : "Ok");
	268	return err;
	269	}
	270
fbb6976c ACM	271	static bool dso__missing_buildid_cache(struct dso *dso, int parm __maybe_unused)
	272	{
	273	char filename[PATH_MAX];
	274	u8 build_id[BUILD_ID_SIZE];
	275
d2396999	276	if (dso__build_id_filename(dso, filename, sizeof(filename), false) &&
fbb6976c ACM	277	filename__read_build_id(filename, build_id,
	278	sizeof(build_id)) != sizeof(build_id)) {
	279	if (errno == ENOENT)
	280	return false;
	281
48000a1a	282	pr_warning("Problems with %s file, consider removing it from the cache\n",
fbb6976c ACM	283	filename);
fbb6976c ACM	284	} else if (memcmp(dso->build_id, build_id, sizeof(dso->build_id))) {
48000a1a	285	pr_warning("Problems with %s file, consider removing it from the cache\n",
fbb6976c ACM	286	filename);
	287	}
	288
	289	return true;
	290	}
	291
e3ed75bb	292	static int build_id_cache__fprintf_missing(struct perf_session session, FILE fp)
fbb6976c	293	{
fbb6976c	294	perf_session__fprintf_dsos_buildid(session, fp, dso__missing_buildid_cache, 0);
fbb6976c ACM	295	return 0;
	296	}
	297
f045b8c4	298	static int build_id_cache__update_file(const char filename, struct nsinfo nsi)
eeb49845 NK	299	{
eeb49845 NK	300	u8 build_id[BUILD_ID_SIZE];
d77fac7f	301	char sbuild_id[SBUILD_ID_SIZE];
f045b8c4	302	struct nscookie nsc;
eeb49845	303
f045b8c4	304	int err;
eeb49845	305
f045b8c4 KJ	306	nsinfo__mountns_enter(nsi, &nsc);
	307	err = filename__read_build_id(filename, &build_id, sizeof(build_id));
	308	nsinfo__mountns_exit(&nsc);
	309	if (err < 0) {
eeb49845 NK	310	pr_debug("Couldn't read a build-id in %s\n", filename);
	311	return -1;
	312	}
f045b8c4	313	err = 0;
eeb49845 NK	314
eeb49845 NK	315	build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
a50d11a1 MH	316	if (build_id_cache__cached(sbuild_id))
	317	err = build_id_cache__remove_s(sbuild_id);
	318
e35f7362	319	if (!err)
f045b8c4 KJ	320	err = build_id_cache__add_s(sbuild_id, filename, nsi, false,
f045b8c4 KJ	321	false);
e35f7362	322
cc169c7c MH	323	pr_debug("Updating %s %s: %s\n", sbuild_id, filename,
cc169c7c MH	324	err ? "FAIL" : "Ok");
eeb49845 NK	325
	326	return err;
	327	}
	328
8e1e0d74 RB	329	static int build_id_cache__show_all(void)
	330	{
	331	struct strlist *bidlist;
	332	struct str_node *nd;
	333	char *buf;
	334
	335	bidlist = build_id_cache__list_all(true);
	336	if (!bidlist) {
	337	pr_debug("Failed to get buildids: -%d\n", errno);
	338	return -1;
	339	}
	340	strlist__for_each_entry(nd, bidlist) {
	341	buf = build_id_cache__origname(nd->s);
	342	fprintf(stdout, "%s %s\n", nd->s, buf);
	343	free(buf);
	344	}
	345	strlist__delete(bidlist);
	346	return 0;
	347	}
	348
b0ad8ea6	349	int cmd_buildid_cache(int argc, const char **argv)
ef12a141 ACM	350	{
	351	struct strlist *list;
	352	struct str_node *pos;
fbb6976c	353	int ret = 0;
f045b8c4	354	int ns_id = -1;
fbb6976c	355	bool force = false;
8e1e0d74 RB	356	bool list_files = false;
8e1e0d74 RB	357	bool opts_flag = false;
9a73c308	358	bool purge_all = false;
472cc83c	359	char const *add_name_list_str = NULL,
fbb6976c	360	*remove_name_list_str = NULL,
8d8c8e4c	361	*purge_name_list_str = NULL,
eeb49845	362	*missing_filename = NULL,
fc1b691d	363	*update_name_list_str = NULL,
eec5a688	364	*kcore_filename = NULL;
340481ad	365	char sbuf[STRERR_BUFSIZE];
eeb49845	366
8ceb41d7	367	struct perf_data data = {
e3ed75bb NK	368	.mode = PERF_DATA_MODE_READ,
	369	};
	370	struct perf_session *session = NULL;
f045b8c4	371	struct nsinfo *nsi = NULL;
e3ed75bb	372
472cc83c ACM	373	const struct option buildid_cache_options[] = {
	374	OPT_STRING('a', "add", &add_name_list_str,
	375	"file list", "file(s) to add"),
fc1b691d AH	376	OPT_STRING('k', "kcore", &kcore_filename,
fc1b691d AH	377	"file", "kcore file to add"),
472cc83c ACM	378	OPT_STRING('r', "remove", &remove_name_list_str, "file list",
472cc83c ACM	379	"file(s) to remove"),
4359dd88 TMR	380	OPT_STRING('p', "purge", &purge_name_list_str, "file list",
4359dd88 TMR	381	"file(s) to remove (remove old caches too)"),
9a73c308	382	OPT_BOOLEAN('P', "purge-all", &purge_all, "purge all cached files"),
8e1e0d74	383	OPT_BOOLEAN('l', "list", &list_files, "list all cached files"),
fbb6976c ACM	384	OPT_STRING('M', "missing", &missing_filename, "file",
	385	"to find missing build ids in the cache"),
	386	OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
eeb49845 NK	387	OPT_STRING('u', "update", &update_name_list_str, "file list",
eeb49845 NK	388	"file(s) to update"),
472cc83c	389	OPT_INCR('v', "verbose", &verbose, "be more verbose"),
f045b8c4	390	OPT_INTEGER(0, "target-ns", &ns_id, "target pid for namespace context"),
472cc83c ACM	391	OPT_END()
	392	};
	393	const char * const buildid_cache_usage[] = {
	394	"perf buildid-cache [<options>]",
	395	NULL
	396	};
	397
	398	argc = parse_options(argc, argv, buildid_cache_options,
	399	buildid_cache_usage, 0);
	400
8e1e0d74 RB	401	opts_flag = add_name_list_str \|\| kcore_filename \|\|
8e1e0d74 RB	402	remove_name_list_str \|\| purge_name_list_str \|\|
9a73c308 RB	403	missing_filename \|\| update_name_list_str \|\|
9a73c308 RB	404	purge_all;
8e1e0d74 RB	405
8e1e0d74 RB	406	if (argc \|\| !(list_files \|\| opts_flag))
0497d0a8 MH	407	usage_with_options(buildid_cache_usage, buildid_cache_options);
0497d0a8 MH	408
8e1e0d74 RB	409	/* -l is exclusive. It can not be used with other options. */
	410	if (list_files && opts_flag) {
	411	usage_with_options_msg(buildid_cache_usage,
	412	buildid_cache_options, "-l is exclusive.\n");
	413	}
	414
f045b8c4 KJ	415	if (ns_id > 0)
	416	nsi = nsinfo__new(ns_id);
	417
e3ed75bb	418	if (missing_filename) {
eae8ad80 JO	419	data.file.path = missing_filename;
eae8ad80 JO	420	data.force = force;
e3ed75bb	421
8ceb41d7	422	session = perf_session__new(&data, false, NULL);
e3ed75bb NK	423	if (session == NULL)
	424	return -1;
	425	}
	426
0a7e6d1b	427	if (symbol__init(session ? &session->header.env : NULL) < 0)
e3ed75bb	428	goto out;
472cc83c ACM	429
472cc83c ACM	430	setup_pager();
ef12a141	431
8e1e0d74 RB	432	if (list_files) {
	433	ret = build_id_cache__show_all();
	434	goto out;
	435	}
	436
ef12a141	437	if (add_name_list_str) {
4a77e218	438	list = strlist__new(add_name_list_str, NULL);
ef12a141	439	if (list) {
602a1f4d	440	strlist__for_each_entry(pos, list)
f045b8c4	441	if (build_id_cache__add_file(pos->s, nsi)) {
ef12a141 ACM	442	if (errno == EEXIST) {
	443	pr_debug("%s already in the cache\n",
	444	pos->s);
	445	continue;
	446	}
	447	pr_warning("Couldn't add %s: %s\n",
c8b5f2c9	448	pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
ef12a141 ACM	449	}
	450
	451	strlist__delete(list);
	452	}
	453	}
	454
	455	if (remove_name_list_str) {
4a77e218	456	list = strlist__new(remove_name_list_str, NULL);
ef12a141	457	if (list) {
602a1f4d	458	strlist__for_each_entry(pos, list)
f045b8c4	459	if (build_id_cache__remove_file(pos->s, nsi)) {
ef12a141 ACM	460	if (errno == ENOENT) {
	461	pr_debug("%s wasn't in the cache\n",
	462	pos->s);
	463	continue;
	464	}
	465	pr_warning("Couldn't remove %s: %s\n",
c8b5f2c9	466	pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
ef12a141 ACM	467	}
	468
	469	strlist__delete(list);
	470	}
	471	}
	472
8d8c8e4c	473	if (purge_name_list_str) {
4a77e218	474	list = strlist__new(purge_name_list_str, NULL);
8d8c8e4c	475	if (list) {
602a1f4d	476	strlist__for_each_entry(pos, list)
f045b8c4	477	if (build_id_cache__purge_path(pos->s, nsi)) {
8d8c8e4c MH	478	if (errno == ENOENT) {
	479	pr_debug("%s wasn't in the cache\n",
	480	pos->s);
	481	continue;
	482	}
	483	pr_warning("Couldn't remove %s: %s\n",
c8b5f2c9	484	pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
8d8c8e4c MH	485	}
	486
	487	strlist__delete(list);
	488	}
	489	}
	490
d8ed87bc RB	491	if (purge_all) {
	492	if (build_id_cache__purge_all()) {
	493	pr_warning("Couldn't remove some caches. Error: %s.\n",
	494	str_error_r(errno, sbuf, sizeof(sbuf)));
	495	}
	496	}
9a73c308	497
fbb6976c	498	if (missing_filename)
e3ed75bb	499	ret = build_id_cache__fprintf_missing(session, stdout);
fbb6976c	500
eeb49845	501	if (update_name_list_str) {
4a77e218	502	list = strlist__new(update_name_list_str, NULL);
eeb49845	503	if (list) {
602a1f4d	504	strlist__for_each_entry(pos, list)
f045b8c4	505	if (build_id_cache__update_file(pos->s, nsi)) {
eeb49845 NK	506	if (errno == ENOENT) {
	507	pr_debug("%s wasn't in the cache\n",
	508	pos->s);
	509	continue;
	510	}
	511	pr_warning("Couldn't update %s: %s\n",
c8b5f2c9	512	pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
eeb49845 NK	513	}
	514
	515	strlist__delete(list);
	516	}
	517	}
	518
e35f7362	519	if (kcore_filename && build_id_cache__add_kcore(kcore_filename, force))
fc1b691d AH	520	pr_warning("Couldn't add %s\n", kcore_filename);
fc1b691d AH	521
e3ed75bb	522	out:
e1446551	523	perf_session__delete(session);
f045b8c4	524	nsinfo__zput(nsi);
e3ed75bb	525
fbb6976c	526	return ret;
ef12a141	527	}