1 /*
2 * builtin-buildid-cache.c
3 *
4 * Builtin buildid-cache command: Manages build-id cache
5 *
6 * Copyright (C) 2010, Red Hat Inc.
7 * Copyright (C) 2010, Arnaldo Carvalho de Melo <acme@redhat.com>
8 */
9 #include "builtin.h"
10 #include "perf.h"
11 #include "util/cache.h"
12 #include "util/debug.h"
13 #include "util/header.h"
14 #include "util/parse-options.h"
15 #include "util/strlist.h"
16 #include "util/build-id.h"
17 #include "util/session.h"
18 #include "util/symbol.h"
19
build_id_cache__add_file(const char * filename,const char * debugdir)20 static int build_id_cache__add_file(const char *filename, const char *debugdir)
21 {
22 char sbuild_id[BUILD_ID_SIZE * 2 + 1];
23 u8 build_id[BUILD_ID_SIZE];
24 int err;
25
26 if (filename__read_build_id(filename, &build_id, sizeof(build_id)) < 0) {
27 pr_debug("Couldn't read a build-id in %s\n", filename);
28 return -1;
29 }
30
31 build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
32 err = build_id_cache__add_s(sbuild_id, debugdir, filename,
33 false, false);
34 if (verbose)
35 pr_info("Adding %s %s: %s\n", sbuild_id, filename,
36 err ? "FAIL" : "Ok");
37 return err;
38 }
39
build_id_cache__remove_file(const char * filename,const char * debugdir)40 static int build_id_cache__remove_file(const char *filename,
41 const char *debugdir)
42 {
43 u8 build_id[BUILD_ID_SIZE];
44 char sbuild_id[BUILD_ID_SIZE * 2 + 1];
45
46 int err;
47
48 if (filename__read_build_id(filename, &build_id, sizeof(build_id)) < 0) {
49 pr_debug("Couldn't read a build-id in %s\n", filename);
50 return -1;
51 }
52
53 build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
54 err = build_id_cache__remove_s(sbuild_id, debugdir);
55 if (verbose)
56 pr_info("Removing %s %s: %s\n", sbuild_id, filename,
57 err ? "FAIL" : "Ok");
58
59 return err;
60 }
61
dso__missing_buildid_cache(struct dso * dso,int parm __maybe_unused)62 static bool dso__missing_buildid_cache(struct dso *dso, int parm __maybe_unused)
63 {
64 char filename[PATH_MAX];
65 u8 build_id[BUILD_ID_SIZE];
66
67 if (dso__build_id_filename(dso, filename, sizeof(filename)) &&
68 filename__read_build_id(filename, build_id,
69 sizeof(build_id)) != sizeof(build_id)) {
70 if (errno == ENOENT)
71 return false;
72
73 pr_warning("Problems with %s file, consider removing it from the cache\n",
74 filename);
75 } else if (memcmp(dso->build_id, build_id, sizeof(dso->build_id))) {
76 pr_warning("Problems with %s file, consider removing it from the cache\n",
77 filename);
78 }
79
80 return true;
81 }
82
build_id_cache__fprintf_missing(const char * filename,bool force,FILE * fp)83 static int build_id_cache__fprintf_missing(const char *filename, bool force, FILE *fp)
84 {
85 struct perf_session *session = perf_session__new(filename, O_RDONLY,
86 force, false, NULL);
87 if (session == NULL)
88 return -1;
89
90 perf_session__fprintf_dsos_buildid(session, fp, dso__missing_buildid_cache, 0);
91 perf_session__delete(session);
92
93 return 0;
94 }
95
build_id_cache__update_file(const char * filename,const char * debugdir)96 static int build_id_cache__update_file(const char *filename,
97 const char *debugdir)
98 {
99 u8 build_id[BUILD_ID_SIZE];
100 char sbuild_id[BUILD_ID_SIZE * 2 + 1];
101
102 int err;
103
104 if (filename__read_build_id(filename, &build_id, sizeof(build_id)) < 0) {
105 pr_debug("Couldn't read a build-id in %s\n", filename);
106 return -1;
107 }
108
109 build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
110 err = build_id_cache__remove_s(sbuild_id, debugdir);
111 if (!err) {
112 err = build_id_cache__add_s(sbuild_id, debugdir, filename,
113 false, false);
114 }
115 if (verbose)
116 pr_info("Updating %s %s: %s\n", sbuild_id, filename,
117 err ? "FAIL" : "Ok");
118
119 return err;
120 }
121
cmd_buildid_cache(int argc,const char ** argv,const char * prefix __maybe_unused)122 int cmd_buildid_cache(int argc, const char **argv,
123 const char *prefix __maybe_unused)
124 {
125 struct strlist *list;
126 struct str_node *pos;
127 int ret = 0;
128 bool force = false;
129 char debugdir[PATH_MAX];
130 char const *add_name_list_str = NULL,
131 *remove_name_list_str = NULL,
132 *missing_filename = NULL,
133 *update_name_list_str = NULL;
134
135 const struct option buildid_cache_options[] = {
136 OPT_STRING('a', "add", &add_name_list_str,
137 "file list", "file(s) to add"),
138 OPT_STRING('r', "remove", &remove_name_list_str, "file list",
139 "file(s) to remove"),
140 OPT_STRING('M', "missing", &missing_filename, "file",
141 "to find missing build ids in the cache"),
142 OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
143 OPT_STRING('u', "update", &update_name_list_str, "file list",
144 "file(s) to update"),
145 OPT_INCR('v', "verbose", &verbose, "be more verbose"),
146 OPT_END()
147 };
148 const char * const buildid_cache_usage[] = {
149 "perf buildid-cache [<options>]",
150 NULL
151 };
152
153 argc = parse_options(argc, argv, buildid_cache_options,
154 buildid_cache_usage, 0);
155
156 if (symbol__init() < 0)
157 return -1;
158
159 setup_pager();
160
161 snprintf(debugdir, sizeof(debugdir), "%s", buildid_dir);
162
163 if (add_name_list_str) {
164 list = strlist__new(true, add_name_list_str);
165 if (list) {
166 strlist__for_each(pos, list)
167 if (build_id_cache__add_file(pos->s, debugdir)) {
168 if (errno == EEXIST) {
169 pr_debug("%s already in the cache\n",
170 pos->s);
171 continue;
172 }
173 pr_warning("Couldn't add %s: %s\n",
174 pos->s, strerror(errno));
175 }
176
177 strlist__delete(list);
178 }
179 }
180
181 if (remove_name_list_str) {
182 list = strlist__new(true, remove_name_list_str);
183 if (list) {
184 strlist__for_each(pos, list)
185 if (build_id_cache__remove_file(pos->s, debugdir)) {
186 if (errno == ENOENT) {
187 pr_debug("%s wasn't in the cache\n",
188 pos->s);
189 continue;
190 }
191 pr_warning("Couldn't remove %s: %s\n",
192 pos->s, strerror(errno));
193 }
194
195 strlist__delete(list);
196 }
197 }
198
199 if (missing_filename)
200 ret = build_id_cache__fprintf_missing(missing_filename, force, stdout);
201
202 if (update_name_list_str) {
203 list = strlist__new(true, update_name_list_str);
204 if (list) {
205 strlist__for_each(pos, list)
206 if (build_id_cache__update_file(pos->s, debugdir)) {
207 if (errno == ENOENT) {
208 pr_debug("%s wasn't in the cache\n",
209 pos->s);
210 continue;
211 }
212 pr_warning("Couldn't update %s: %s\n",
213 pos->s, strerror(errno));
214 }
215
216 strlist__delete(list);
217 }
218 }
219
220 return ret;
221 }
222