[mirror_ubuntu-jammy-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/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 <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];
	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 (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 <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/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"
fa0d9846	30	#include <linux/string.h>
6ef81c55	31	#include <linux/err.h>
ef12a141	32
fc1b691d AH	33	static int build_id_cache__kcore_buildid(const char proc_dir, char sbuildid)
	34	{
	35	char root_dir[PATH_MAX];
fc1b691d AH	36	char *p;
	37
	38	strlcpy(root_dir, proc_dir, sizeof(root_dir));
	39
	40	p = strrchr(root_dir, '/');
	41	if (!p)
	42	return -1;
	43	*p = '\0';
0b5a7935	44	return sysfs__sprintf_build_id(root_dir, sbuildid);
fc1b691d AH	45	}
	46
	47	static int build_id_cache__kcore_dir(char *dir, size_t sz)
	48	{
37b20151	49	return fetch_current_timestamp(dir, sz);
fc1b691d AH	50	}
fc1b691d AH	51
d3b70220 AH	52	static bool same_kallsyms_reloc(const char from_dir, char to_dir)
	53	{
	54	char from[PATH_MAX];
	55	char to[PATH_MAX];
	56	const char *name;
	57	u64 addr1 = 0, addr2 = 0;
b843f62a	58	int i, err = -1;
d3b70220 AH	59
	60	scnprintf(from, sizeof(from), "%s/kallsyms", from_dir);
	61	scnprintf(to, sizeof(to), "%s/kallsyms", to_dir);
	62
	63	for (i = 0; (name = ref_reloc_sym_names[i]) != NULL; i++) {
b843f62a ACM	64	err = kallsyms__get_function_start(from, name, &addr1);
b843f62a ACM	65	if (!err)
d3b70220 AH	66	break;
	67	}
	68
b843f62a ACM	69	if (err)
	70	return false;
	71
	72	if (kallsyms__get_function_start(to, name, &addr2))
	73	return false;
d3b70220 AH	74
	75	return addr1 == addr2;
	76	}
	77
fc1b691d AH	78	static int build_id_cache__kcore_existing(const char from_dir, char to_dir,
	79	size_t to_dir_sz)
	80	{
	81	char from[PATH_MAX];
	82	char to[PATH_MAX];
d3b70220	83	char to_subdir[PATH_MAX];
fc1b691d AH	84	struct dirent *dent;
	85	int ret = -1;
	86	DIR *d;
	87
	88	d = opendir(to_dir);
	89	if (!d)
	90	return -1;
	91
	92	scnprintf(from, sizeof(from), "%s/modules", from_dir);
	93
	94	while (1) {
	95	dent = readdir(d);
	96	if (!dent)
	97	break;
	98	if (dent->d_type != DT_DIR)
	99	continue;
	100	scnprintf(to, sizeof(to), "%s/%s/modules", to_dir,
	101	dent->d_name);
d3b70220 AH	102	scnprintf(to_subdir, sizeof(to_subdir), "%s/%s",
	103	to_dir, dent->d_name);
	104	if (!compare_proc_modules(from, to) &&
	105	same_kallsyms_reloc(from_dir, to_subdir)) {
	106	strlcpy(to_dir, to_subdir, to_dir_sz);
fc1b691d AH	107	ret = 0;
	108	break;
	109	}
	110	}
	111
	112	closedir(d);
	113
	114	return ret;
	115	}
	116
e35f7362	117	static int build_id_cache__add_kcore(const char *filename, bool force)
fc1b691d	118	{
d77fac7f	119	char dir[32], sbuildid[SBUILD_ID_SIZE];
fc1b691d AH	120	char from_dir[PATH_MAX], to_dir[PATH_MAX];
	121	char *p;
	122
	123	strlcpy(from_dir, filename, sizeof(from_dir));
	124
	125	p = strrchr(from_dir, '/');
	126	if (!p \|\| strcmp(p + 1, "kcore"))
	127	return -1;
	128	*p = '\0';
	129
0b5a7935	130	if (build_id_cache__kcore_buildid(from_dir, sbuildid) < 0)
fc1b691d AH	131	return -1;
fc1b691d AH	132
0a77582f MH	133	scnprintf(to_dir, sizeof(to_dir), "%s/%s/%s",
0a77582f MH	134	buildid_dir, DSO__NAME_KCORE, sbuildid);
fc1b691d	135
5173fbb8 AH	136	if (!force &&
5173fbb8 AH	137	!build_id_cache__kcore_existing(from_dir, to_dir, sizeof(to_dir))) {
fc1b691d AH	138	pr_debug("same kcore found in %s\n", to_dir);
	139	return 0;
	140	}
	141
	142	if (build_id_cache__kcore_dir(dir, sizeof(dir)))
	143	return -1;
	144
0a77582f MH	145	scnprintf(to_dir, sizeof(to_dir), "%s/%s/%s/%s",
0a77582f MH	146	buildid_dir, DSO__NAME_KCORE, sbuildid, dir);
fc1b691d AH	147
	148	if (mkdir_p(to_dir, 0755))
	149	return -1;
	150
	151	if (kcore_copy(from_dir, to_dir)) {
	152	/* Remove YYYYmmddHHMMSShh directory */
	153	if (!rmdir(to_dir)) {
	154	p = strrchr(to_dir, '/');
	155	if (p)
	156	*p = '\0';
	157	/* Try to remove buildid directory */
	158	if (!rmdir(to_dir)) {
	159	p = strrchr(to_dir, '/');
	160	if (p)
	161	*p = '\0';
	162	/* Try to remove [kernel.kcore] directory */
	163	rmdir(to_dir);
	164	}
	165	}
	166	return -1;
	167	}
	168
	169	pr_debug("kcore added to build-id cache directory %s\n", to_dir);
	170
	171	return 0;
	172	}
	173
f045b8c4	174	static int build_id_cache__add_file(const char filename, struct nsinfo nsi)
ef12a141	175	{
d77fac7f	176	char sbuild_id[SBUILD_ID_SIZE];
ef12a141 ACM	177	u8 build_id[BUILD_ID_SIZE];
ef12a141 ACM	178	int err;
f045b8c4	179	struct nscookie nsc;
ef12a141	180
f045b8c4 KJ	181	nsinfo__mountns_enter(nsi, &nsc);
	182	err = filename__read_build_id(filename, &build_id, sizeof(build_id));
	183	nsinfo__mountns_exit(&nsc);
	184	if (err < 0) {
ef12a141 ACM	185	pr_debug("Couldn't read a build-id in %s\n", filename);
	186	return -1;
	187	}
	188
	189	build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
f045b8c4	190	err = build_id_cache__add_s(sbuild_id, filename, nsi,
7dbf4dcf	191	false, false);
cc169c7c MH	192	pr_debug("Adding %s %s: %s\n", sbuild_id, filename,
cc169c7c MH	193	err ? "FAIL" : "Ok");
ef12a141 ACM	194	return err;
	195	}
	196
f045b8c4	197	static int build_id_cache__remove_file(const char filename, struct nsinfo nsi)
ef12a141 ACM	198	{
ef12a141 ACM	199	u8 build_id[BUILD_ID_SIZE];
d77fac7f	200	char sbuild_id[SBUILD_ID_SIZE];
f045b8c4	201	struct nscookie nsc;
ef12a141 ACM	202
	203	int err;
	204
f045b8c4 KJ	205	nsinfo__mountns_enter(nsi, &nsc);
	206	err = filename__read_build_id(filename, &build_id, sizeof(build_id));
	207	nsinfo__mountns_exit(&nsc);
	208	if (err < 0) {
ef12a141 ACM	209	pr_debug("Couldn't read a build-id in %s\n", filename);
	210	return -1;
	211	}
	212
	213	build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
e35f7362	214	err = build_id_cache__remove_s(sbuild_id);
cc169c7c MH	215	pr_debug("Removing %s %s: %s\n", sbuild_id, filename,
cc169c7c MH	216	err ? "FAIL" : "Ok");
ef12a141 ACM	217
	218	return err;
	219	}
	220
f045b8c4	221	static int build_id_cache__purge_path(const char pathname, struct nsinfo nsi)
8d8c8e4c MH	222	{
	223	struct strlist *list;
	224	struct str_node *pos;
	225	int err;
	226
f045b8c4	227	err = build_id_cache__list_build_ids(pathname, nsi, &list);
8d8c8e4c MH	228	if (err)
	229	goto out;
	230
602a1f4d	231	strlist__for_each_entry(pos, list) {
8d8c8e4c	232	err = build_id_cache__remove_s(pos->s);
cc169c7c MH	233	pr_debug("Removing %s %s: %s\n", pos->s, pathname,
cc169c7c MH	234	err ? "FAIL" : "Ok");
8d8c8e4c MH	235	if (err)
	236	break;
	237	}
	238	strlist__delete(list);
	239
	240	out:
cc169c7c	241	pr_debug("Purging %s: %s\n", pathname, err ? "FAIL" : "Ok");
8d8c8e4c MH	242
	243	return err;
	244	}
	245
9a73c308 RB	246	static int build_id_cache__purge_all(void)
	247	{
	248	struct strlist *list;
	249	struct str_node *pos;
	250	int err = 0;
	251	char *buf;
	252
	253	list = build_id_cache__list_all(false);
	254	if (!list) {
	255	pr_debug("Failed to get buildids: -%d\n", errno);
	256	return -EINVAL;
	257	}
	258
	259	strlist__for_each_entry(pos, list) {
	260	buf = build_id_cache__origname(pos->s);
	261	err = build_id_cache__remove_s(pos->s);
	262	pr_debug("Removing %s (%s): %s\n", buf, pos->s,
	263	err ? "FAIL" : "Ok");
	264	free(buf);
	265	if (err)
	266	break;
	267	}
	268	strlist__delete(list);
	269
	270	pr_debug("Purged all: %s\n", err ? "FAIL" : "Ok");
	271	return err;
	272	}
	273
fbb6976c ACM	274	static bool dso__missing_buildid_cache(struct dso *dso, int parm __maybe_unused)
	275	{
	276	char filename[PATH_MAX];
	277	u8 build_id[BUILD_ID_SIZE];
	278
d2396999	279	if (dso__build_id_filename(dso, filename, sizeof(filename), false) &&
fbb6976c ACM	280	filename__read_build_id(filename, build_id,
	281	sizeof(build_id)) != sizeof(build_id)) {
	282	if (errno == ENOENT)
	283	return false;
	284
48000a1a	285	pr_warning("Problems with %s file, consider removing it from the cache\n",
fbb6976c ACM	286	filename);
fbb6976c ACM	287	} else if (memcmp(dso->build_id, build_id, sizeof(dso->build_id))) {
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 NK	302	{
eeb49845 NK	303	u8 build_id[BUILD_ID_SIZE];
d77fac7f	304	char sbuild_id[SBUILD_ID_SIZE];
f045b8c4	305	struct nscookie nsc;
eeb49845	306
f045b8c4	307	int err;
eeb49845	308
f045b8c4 KJ	309	nsinfo__mountns_enter(nsi, &nsc);
	310	err = filename__read_build_id(filename, &build_id, sizeof(build_id));
	311	nsinfo__mountns_exit(&nsc);
	312	if (err < 0) {
eeb49845 NK	313	pr_debug("Couldn't read a build-id in %s\n", filename);
	314	return -1;
	315	}
f045b8c4	316	err = 0;
eeb49845 NK	317
eeb49845 NK	318	build_id__sprintf(build_id, sizeof(build_id), 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
b0ad8ea6	352	int cmd_buildid_cache(int argc, const char **argv)
ef12a141 ACM	353	{
	354	struct strlist *list;
	355	struct str_node *pos;
fbb6976c	356	int ret = 0;
f045b8c4	357	int ns_id = -1;
fbb6976c	358	bool force = false;
8e1e0d74 RB	359	bool list_files = false;
8e1e0d74 RB	360	bool opts_flag = false;
9a73c308	361	bool purge_all = false;
472cc83c	362	char const *add_name_list_str = NULL,
fbb6976c	363	*remove_name_list_str = NULL,
8d8c8e4c	364	*purge_name_list_str = NULL,
eeb49845	365	*missing_filename = NULL,
fc1b691d	366	*update_name_list_str = NULL,
eec5a688	367	*kcore_filename = NULL;
340481ad	368	char sbuf[STRERR_BUFSIZE];
eeb49845	369
8ceb41d7	370	struct perf_data data = {
e3ed75bb NK	371	.mode = PERF_DATA_MODE_READ,
	372	};
	373	struct perf_session *session = NULL;
f045b8c4	374	struct nsinfo *nsi = NULL;
e3ed75bb	375
472cc83c ACM	376	const struct option buildid_cache_options[] = {
	377	OPT_STRING('a', "add", &add_name_list_str,
	378	"file list", "file(s) to add"),
fc1b691d AH	379	OPT_STRING('k', "kcore", &kcore_filename,
fc1b691d AH	380	"file", "kcore file to add"),
472cc83c ACM	381	OPT_STRING('r', "remove", &remove_name_list_str, "file list",
472cc83c ACM	382	"file(s) to remove"),
4359dd88 TMR	383	OPT_STRING('p', "purge", &purge_name_list_str, "file list",
4359dd88 TMR	384	"file(s) to remove (remove old caches too)"),
9a73c308	385	OPT_BOOLEAN('P', "purge-all", &purge_all, "purge all cached files"),
8e1e0d74	386	OPT_BOOLEAN('l', "list", &list_files, "list all cached files"),
fbb6976c ACM	387	OPT_STRING('M', "missing", &missing_filename, "file",
	388	"to find missing build ids in the cache"),
	389	OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
eeb49845 NK	390	OPT_STRING('u', "update", &update_name_list_str, "file list",
eeb49845 NK	391	"file(s) to update"),
472cc83c	392	OPT_INCR('v', "verbose", &verbose, "be more verbose"),
f045b8c4	393	OPT_INTEGER(0, "target-ns", &ns_id, "target pid for namespace context"),
472cc83c ACM	394	OPT_END()
	395	};
	396	const char * const buildid_cache_usage[] = {
	397	"perf buildid-cache [<options>]",
	398	NULL
	399	};
	400
	401	argc = parse_options(argc, argv, buildid_cache_options,
	402	buildid_cache_usage, 0);
	403
8e1e0d74 RB	404	opts_flag = add_name_list_str \|\| kcore_filename \|\|
8e1e0d74 RB	405	remove_name_list_str \|\| purge_name_list_str \|\|
9a73c308 RB	406	missing_filename \|\| update_name_list_str \|\|
9a73c308 RB	407	purge_all;
8e1e0d74 RB	408
8e1e0d74 RB	409	if (argc \|\| !(list_files \|\| opts_flag))
0497d0a8 MH	410	usage_with_options(buildid_cache_usage, buildid_cache_options);
0497d0a8 MH	411
8e1e0d74 RB	412	/* -l is exclusive. It can not be used with other options. */
	413	if (list_files && opts_flag) {
	414	usage_with_options_msg(buildid_cache_usage,
	415	buildid_cache_options, "-l is exclusive.\n");
	416	}
	417
f045b8c4 KJ	418	if (ns_id > 0)
	419	nsi = nsinfo__new(ns_id);
	420
e3ed75bb	421	if (missing_filename) {
2d4f2799 JO	422	data.path = missing_filename;
2d4f2799 JO	423	data.force = force;
e3ed75bb	424
8ceb41d7	425	session = perf_session__new(&data, false, NULL);
6ef81c55 MI	426	if (IS_ERR(session))
6ef81c55 MI	427	return PTR_ERR(session);
e3ed75bb NK	428	}
e3ed75bb NK	429
0a7e6d1b	430	if (symbol__init(session ? &session->header.env : NULL) < 0)
e3ed75bb	431	goto out;
472cc83c ACM	432
472cc83c ACM	433	setup_pager();
ef12a141	434
8e1e0d74 RB	435	if (list_files) {
	436	ret = build_id_cache__show_all();
	437	goto out;
	438	}
	439
ef12a141	440	if (add_name_list_str) {
4a77e218	441	list = strlist__new(add_name_list_str, NULL);
ef12a141	442	if (list) {
602a1f4d	443	strlist__for_each_entry(pos, list)
f045b8c4	444	if (build_id_cache__add_file(pos->s, nsi)) {
ef12a141 ACM	445	if (errno == EEXIST) {
	446	pr_debug("%s already in the cache\n",
	447	pos->s);
	448	continue;
	449	}
	450	pr_warning("Couldn't add %s: %s\n",
c8b5f2c9	451	pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
ef12a141 ACM	452	}
	453
	454	strlist__delete(list);
	455	}
	456	}
	457
	458	if (remove_name_list_str) {
4a77e218	459	list = strlist__new(remove_name_list_str, NULL);
ef12a141	460	if (list) {
602a1f4d	461	strlist__for_each_entry(pos, list)
f045b8c4	462	if (build_id_cache__remove_file(pos->s, nsi)) {
ef12a141 ACM	463	if (errno == ENOENT) {
	464	pr_debug("%s wasn't in the cache\n",
	465	pos->s);
	466	continue;
	467	}
	468	pr_warning("Couldn't remove %s: %s\n",
c8b5f2c9	469	pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
ef12a141 ACM	470	}
	471
	472	strlist__delete(list);
	473	}
	474	}
	475
8d8c8e4c	476	if (purge_name_list_str) {
4a77e218	477	list = strlist__new(purge_name_list_str, NULL);
8d8c8e4c	478	if (list) {
602a1f4d	479	strlist__for_each_entry(pos, list)
f045b8c4	480	if (build_id_cache__purge_path(pos->s, nsi)) {
8d8c8e4c MH	481	if (errno == ENOENT) {
	482	pr_debug("%s wasn't in the cache\n",
	483	pos->s);
	484	continue;
	485	}
	486	pr_warning("Couldn't remove %s: %s\n",
c8b5f2c9	487	pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
8d8c8e4c MH	488	}
	489
	490	strlist__delete(list);
	491	}
	492	}
	493
d8ed87bc RB	494	if (purge_all) {
	495	if (build_id_cache__purge_all()) {
	496	pr_warning("Couldn't remove some caches. Error: %s.\n",
	497	str_error_r(errno, sbuf, sizeof(sbuf)));
	498	}
	499	}
9a73c308	500
fbb6976c	501	if (missing_filename)
e3ed75bb	502	ret = build_id_cache__fprintf_missing(session, stdout);
fbb6976c	503
eeb49845	504	if (update_name_list_str) {
4a77e218	505	list = strlist__new(update_name_list_str, NULL);
eeb49845	506	if (list) {
602a1f4d	507	strlist__for_each_entry(pos, list)
f045b8c4	508	if (build_id_cache__update_file(pos->s, nsi)) {
eeb49845 NK	509	if (errno == ENOENT) {
	510	pr_debug("%s wasn't in the cache\n",
	511	pos->s);
	512	continue;
	513	}
	514	pr_warning("Couldn't update %s: %s\n",
c8b5f2c9	515	pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
eeb49845 NK	516	}
	517
	518	strlist__delete(list);
	519	}
	520	}
	521
e35f7362	522	if (kcore_filename && build_id_cache__add_kcore(kcore_filename, force))
fc1b691d AH	523	pr_warning("Couldn't add %s\n", kcore_filename);
fc1b691d AH	524
e3ed75bb	525	out:
e1446551	526	perf_session__delete(session);
f045b8c4	527	nsinfo__zput(nsi);
e3ed75bb	528
fbb6976c	529	return ret;
ef12a141	530	}