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/symbol.h"
17
18static char const *add_name_list_str, *remove_name_list_str;
19
20static const char * const buildid_cache_usage[] = {
21	"perf buildid-cache [<options>]",
22	NULL
23};
24
25static const struct option buildid_cache_options[] = {
26	OPT_STRING('a', "add", &add_name_list_str,
27		   "file list", "file(s) to add"),
28	OPT_STRING('r', "remove", &remove_name_list_str, "file list",
29		    "file(s) to remove"),
30	OPT_INCR('v', "verbose", &verbose, "be more verbose"),
31	OPT_END()
32};
33
34static int build_id_cache__add_file(const char *filename, const char *debugdir)
35{
36	char sbuild_id[BUILD_ID_SIZE * 2 + 1];
37	u8 build_id[BUILD_ID_SIZE];
38	int err;
39
40	if (filename__read_build_id(filename, &build_id, sizeof(build_id)) < 0) {
41		pr_debug("Couldn't read a build-id in %s\n", filename);
42		return -1;
43	}
44
45	build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
46	err = build_id_cache__add_s(sbuild_id, debugdir, filename, false);
47	if (verbose)
48		pr_info("Adding %s %s: %s\n", sbuild_id, filename,
49			err ? "FAIL" : "Ok");
50	return err;
51}
52
53static int build_id_cache__remove_file(const char *filename __used,
54				       const char *debugdir __used)
55{
56	u8 build_id[BUILD_ID_SIZE];
57	char sbuild_id[BUILD_ID_SIZE * 2 + 1];
58
59	int err;
60
61	if (filename__read_build_id(filename, &build_id, sizeof(build_id)) < 0) {
62		pr_debug("Couldn't read a build-id in %s\n", filename);
63		return -1;
64	}
65
66	build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
67	err = build_id_cache__remove_s(sbuild_id, debugdir);
68	if (verbose)
69		pr_info("Removing %s %s: %s\n", sbuild_id, filename,
70			err ? "FAIL" : "Ok");
71
72	return err;
73}
74
75static int __cmd_buildid_cache(void)
76{
77	struct strlist *list;
78	struct str_node *pos;
79	char debugdir[PATH_MAX];
80
81	snprintf(debugdir, sizeof(debugdir), "%s", buildid_dir);
82
83	if (add_name_list_str) {
84		list = strlist__new(true, add_name_list_str);
85		if (list) {
86			strlist__for_each(pos, list)
87				if (build_id_cache__add_file(pos->s, debugdir)) {
88					if (errno == EEXIST) {
89						pr_debug("%s already in the cache\n",
90							 pos->s);
91						continue;
92					}
93					pr_warning("Couldn't add %s: %s\n",
94						   pos->s, strerror(errno));
95				}
96
97			strlist__delete(list);
98		}
99	}
100
101	if (remove_name_list_str) {
102		list = strlist__new(true, remove_name_list_str);
103		if (list) {
104			strlist__for_each(pos, list)
105				if (build_id_cache__remove_file(pos->s, debugdir)) {
106					if (errno == ENOENT) {
107						pr_debug("%s wasn't in the cache\n",
108							 pos->s);
109						continue;
110					}
111					pr_warning("Couldn't remove %s: %s\n",
112						   pos->s, strerror(errno));
113				}
114
115			strlist__delete(list);
116		}
117	}
118
119	return 0;
120}
121
122int cmd_buildid_cache(int argc, const char **argv, const char *prefix __used)
123{
124	argc = parse_options(argc, argv, buildid_cache_options,
125			     buildid_cache_usage, 0);
126
127	if (symbol__init() < 0)
128		return -1;
129
130	setup_pager();
131	return __cmd_buildid_cache();
132}
133