[linux-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"

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 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;
}

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;
	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_file file = {
		.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, "path list",
		    "path(s) to remove (remove old caches too)"),
	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);

	if (argc || (!add_name_list_str && !kcore_filename &&
		     !remove_name_list_str && !purge_name_list_str &&
		     !missing_filename && !update_name_list_str))
		usage_with_options(buildid_cache_usage, buildid_cache_options);

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

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

		session = perf_session__new(&file, false, NULL);
		if (session == NULL)
			return -1;
	}

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

	setup_pager();

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