2 * builtin-buildid-cache.c
4 * Builtin buildid-cache command: Manages build-id cache
6 * Copyright (C) 2010, Red Hat Inc.
7 * Copyright (C) 2010, Arnaldo Carvalho de Melo <acme@redhat.com>
16 #include "util/cache.h"
17 #include "util/debug.h"
18 #include "util/header.h"
19 #include "util/parse-options.h"
20 #include "util/strlist.h"
21 #include "util/build-id.h"
22 #include "util/session.h"
23 #include "util/symbol.h"
25 static int build_id_cache__kcore_buildid(const char *proc_dir
, char *sbuildid
)
27 char root_dir
[PATH_MAX
];
29 u8 build_id
[BUILD_ID_SIZE
];
32 strlcpy(root_dir
, proc_dir
, sizeof(root_dir
));
34 p
= strrchr(root_dir
, '/');
39 scnprintf(notes
, sizeof(notes
), "%s/sys/kernel/notes", root_dir
);
41 if (sysfs__read_build_id(notes
, build_id
, sizeof(build_id
)))
44 build_id__sprintf(build_id
, sizeof(build_id
), sbuildid
);
49 static int build_id_cache__kcore_dir(char *dir
, size_t sz
)
55 if (gettimeofday(&tv
, NULL
) || !localtime_r(&tv
.tv_sec
, &tm
))
58 if (!strftime(dt
, sizeof(dt
), "%Y%m%d%H%M%S", &tm
))
61 scnprintf(dir
, sz
, "%s%02u", dt
, (unsigned)tv
.tv_usec
/ 10000);
66 static int build_id_cache__kcore_existing(const char *from_dir
, char *to_dir
,
79 scnprintf(from
, sizeof(from
), "%s/modules", from_dir
);
85 if (dent
->d_type
!= DT_DIR
)
87 scnprintf(to
, sizeof(to
), "%s/%s/modules", to_dir
,
89 if (!compare_proc_modules(from
, to
)) {
90 scnprintf(to
, sizeof(to
), "%s/%s", to_dir
,
92 strlcpy(to_dir
, to
, to_dir_sz
);
103 static int build_id_cache__add_kcore(const char *filename
, const char *debugdir
)
105 char dir
[32], sbuildid
[BUILD_ID_SIZE
* 2 + 1];
106 char from_dir
[PATH_MAX
], to_dir
[PATH_MAX
];
109 strlcpy(from_dir
, filename
, sizeof(from_dir
));
111 p
= strrchr(from_dir
, '/');
112 if (!p
|| strcmp(p
+ 1, "kcore"))
116 if (build_id_cache__kcore_buildid(from_dir
, sbuildid
))
119 scnprintf(to_dir
, sizeof(to_dir
), "%s/[kernel.kcore]/%s",
122 if (!build_id_cache__kcore_existing(from_dir
, to_dir
, sizeof(to_dir
))) {
123 pr_debug("same kcore found in %s\n", to_dir
);
127 if (build_id_cache__kcore_dir(dir
, sizeof(dir
)))
130 scnprintf(to_dir
, sizeof(to_dir
), "%s/[kernel.kcore]/%s/%s",
131 debugdir
, sbuildid
, dir
);
133 if (mkdir_p(to_dir
, 0755))
136 if (kcore_copy(from_dir
, to_dir
)) {
137 /* Remove YYYYmmddHHMMSShh directory */
138 if (!rmdir(to_dir
)) {
139 p
= strrchr(to_dir
, '/');
142 /* Try to remove buildid directory */
143 if (!rmdir(to_dir
)) {
144 p
= strrchr(to_dir
, '/');
147 /* Try to remove [kernel.kcore] directory */
154 pr_debug("kcore added to build-id cache directory %s\n", to_dir
);
159 static int build_id_cache__add_file(const char *filename
, const char *debugdir
)
161 char sbuild_id
[BUILD_ID_SIZE
* 2 + 1];
162 u8 build_id
[BUILD_ID_SIZE
];
165 if (filename__read_build_id(filename
, &build_id
, sizeof(build_id
)) < 0) {
166 pr_debug("Couldn't read a build-id in %s\n", filename
);
170 build_id__sprintf(build_id
, sizeof(build_id
), sbuild_id
);
171 err
= build_id_cache__add_s(sbuild_id
, debugdir
, filename
,
174 pr_info("Adding %s %s: %s\n", sbuild_id
, filename
,
175 err
? "FAIL" : "Ok");
179 static int build_id_cache__remove_file(const char *filename
,
180 const char *debugdir
)
182 u8 build_id
[BUILD_ID_SIZE
];
183 char sbuild_id
[BUILD_ID_SIZE
* 2 + 1];
187 if (filename__read_build_id(filename
, &build_id
, sizeof(build_id
)) < 0) {
188 pr_debug("Couldn't read a build-id in %s\n", filename
);
192 build_id__sprintf(build_id
, sizeof(build_id
), sbuild_id
);
193 err
= build_id_cache__remove_s(sbuild_id
, debugdir
);
195 pr_info("Removing %s %s: %s\n", sbuild_id
, filename
,
196 err
? "FAIL" : "Ok");
201 static bool dso__missing_buildid_cache(struct dso
*dso
, int parm __maybe_unused
)
203 char filename
[PATH_MAX
];
204 u8 build_id
[BUILD_ID_SIZE
];
206 if (dso__build_id_filename(dso
, filename
, sizeof(filename
)) &&
207 filename__read_build_id(filename
, build_id
,
208 sizeof(build_id
)) != sizeof(build_id
)) {
212 pr_warning("Problems with %s file, consider removing it from the cache\n",
214 } else if (memcmp(dso
->build_id
, build_id
, sizeof(dso
->build_id
))) {
215 pr_warning("Problems with %s file, consider removing it from the cache\n",
222 static int build_id_cache__fprintf_missing(const char *filename
, bool force
, FILE *fp
)
224 struct perf_data_file file
= {
226 .mode
= PERF_DATA_MODE_READ
,
229 struct perf_session
*session
= perf_session__new(&file
, false, NULL
);
233 perf_session__fprintf_dsos_buildid(session
, fp
, dso__missing_buildid_cache
, 0);
234 perf_session__delete(session
);
239 static int build_id_cache__update_file(const char *filename
,
240 const char *debugdir
)
242 u8 build_id
[BUILD_ID_SIZE
];
243 char sbuild_id
[BUILD_ID_SIZE
* 2 + 1];
247 if (filename__read_build_id(filename
, &build_id
, sizeof(build_id
)) < 0) {
248 pr_debug("Couldn't read a build-id in %s\n", filename
);
252 build_id__sprintf(build_id
, sizeof(build_id
), sbuild_id
);
253 err
= build_id_cache__remove_s(sbuild_id
, debugdir
);
255 err
= build_id_cache__add_s(sbuild_id
, debugdir
, filename
,
259 pr_info("Updating %s %s: %s\n", sbuild_id
, filename
,
260 err
? "FAIL" : "Ok");
265 int cmd_buildid_cache(int argc
, const char **argv
,
266 const char *prefix __maybe_unused
)
268 struct strlist
*list
;
269 struct str_node
*pos
;
272 char debugdir
[PATH_MAX
];
273 char const *add_name_list_str
= NULL
,
274 *remove_name_list_str
= NULL
,
275 *missing_filename
= NULL
,
276 *update_name_list_str
= NULL
,
279 const struct option buildid_cache_options
[] = {
280 OPT_STRING('a', "add", &add_name_list_str
,
281 "file list", "file(s) to add"),
282 OPT_STRING('k', "kcore", &kcore_filename
,
283 "file", "kcore file to add"),
284 OPT_STRING('r', "remove", &remove_name_list_str
, "file list",
285 "file(s) to remove"),
286 OPT_STRING('M', "missing", &missing_filename
, "file",
287 "to find missing build ids in the cache"),
288 OPT_BOOLEAN('f', "force", &force
, "don't complain, do it"),
289 OPT_STRING('u', "update", &update_name_list_str
, "file list",
290 "file(s) to update"),
291 OPT_INCR('v', "verbose", &verbose
, "be more verbose"),
294 const char * const buildid_cache_usage
[] = {
295 "perf buildid-cache [<options>]",
299 argc
= parse_options(argc
, argv
, buildid_cache_options
,
300 buildid_cache_usage
, 0);
302 if (symbol__init() < 0)
307 snprintf(debugdir
, sizeof(debugdir
), "%s", buildid_dir
);
309 if (add_name_list_str
) {
310 list
= strlist__new(true, add_name_list_str
);
312 strlist__for_each(pos
, list
)
313 if (build_id_cache__add_file(pos
->s
, debugdir
)) {
314 if (errno
== EEXIST
) {
315 pr_debug("%s already in the cache\n",
319 pr_warning("Couldn't add %s: %s\n",
320 pos
->s
, strerror(errno
));
323 strlist__delete(list
);
327 if (remove_name_list_str
) {
328 list
= strlist__new(true, remove_name_list_str
);
330 strlist__for_each(pos
, list
)
331 if (build_id_cache__remove_file(pos
->s
, debugdir
)) {
332 if (errno
== ENOENT
) {
333 pr_debug("%s wasn't in the cache\n",
337 pr_warning("Couldn't remove %s: %s\n",
338 pos
->s
, strerror(errno
));
341 strlist__delete(list
);
345 if (missing_filename
)
346 ret
= build_id_cache__fprintf_missing(missing_filename
, force
, stdout
);
348 if (update_name_list_str
) {
349 list
= strlist__new(true, update_name_list_str
);
351 strlist__for_each(pos
, list
)
352 if (build_id_cache__update_file(pos
->s
, debugdir
)) {
353 if (errno
== ENOENT
) {
354 pr_debug("%s wasn't in the cache\n",
358 pr_warning("Couldn't update %s: %s\n",
359 pos
->s
, strerror(errno
));
362 strlist__delete(list
);
366 if (kcore_filename
&&
367 build_id_cache__add_kcore(kcore_filename
, debugdir
))
368 pr_warning("Couldn't add %s\n", kcore_filename
);