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1/*
2 * builtin-buildid-list.c
3 *
4 * Builtin buildid-list command: list buildids in perf.data, in the running
5 * kernel and in ELF files.
6 *
7 * Copyright (C) 2009, Red Hat Inc.
8 * Copyright (C) 2009, Arnaldo Carvalho de Melo <acme@redhat.com>
9 */
10#include "builtin.h"
11#include "perf.h"
12#include "util/build-id.h"
13#include "util/cache.h"
14#include "util/debug.h"
15#include "util/parse-options.h"
16#include "util/session.h"
17#include "util/symbol.h"
18
19#include <libelf.h>
20
21static const char *input_name;
22static bool force;
23static bool show_kernel;
24static bool with_hits;
25
26static const char * const buildid_list_usage[] = {
27 "perf buildid-list [<options>]",
28 NULL
29};
30
31static const struct option options[] = {
32 OPT_BOOLEAN('H', "with-hits", &with_hits, "Show only DSOs with hits"),
33 OPT_STRING('i', "input", &input_name, "file",
34 "input file name"),
35 OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
36 OPT_BOOLEAN('k', "kernel", &show_kernel, "Show current kernel build id"),
37 OPT_INCR('v', "verbose", &verbose,
38 "be more verbose"),
39 OPT_END()
40};
41
42static int sysfs__fprintf_build_id(FILE *fp)
43{
44 u8 kallsyms_build_id[BUILD_ID_SIZE];
45 char sbuild_id[BUILD_ID_SIZE * 2 + 1];
46
47 if (sysfs__read_build_id("/sys/kernel/notes", kallsyms_build_id,
48 sizeof(kallsyms_build_id)) != 0)
49 return -1;
50
51 build_id__sprintf(kallsyms_build_id, sizeof(kallsyms_build_id),
52 sbuild_id);
53 fprintf(fp, "%s\n", sbuild_id);
54 return 0;
55}
56
57static int filename__fprintf_build_id(const char *name, FILE *fp)
58{
59 u8 build_id[BUILD_ID_SIZE];
60 char sbuild_id[BUILD_ID_SIZE * 2 + 1];
61
62 if (filename__read_build_id(name, build_id,
63 sizeof(build_id)) != sizeof(build_id))
64 return 0;
65
66 build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
67 return fprintf(fp, "%s\n", sbuild_id);
68}
69
70static int perf_session__list_build_ids(void)
71{
72 struct perf_session *session;
73
74 elf_version(EV_CURRENT);
75
76 session = perf_session__new(input_name, O_RDONLY, force, false,
77 &build_id__mark_dso_hit_ops);
78 if (session == NULL)
79 return -1;
80
81 /*
82 * See if this is an ELF file first:
83 */
84 if (filename__fprintf_build_id(session->filename, stdout))
85 goto out;
86
87 /*
88 * in pipe-mode, the only way to get the buildids is to parse
89 * the record stream. Buildids are stored as RECORD_HEADER_BUILD_ID
90 */
91 if (with_hits || session->fd_pipe)
92 perf_session__process_events(session, &build_id__mark_dso_hit_ops);
93
94 perf_session__fprintf_dsos_buildid(session, stdout, with_hits);
95out:
96 perf_session__delete(session);
97 return 0;
98}
99
100static int __cmd_buildid_list(void)
101{
102 if (show_kernel)
103 return sysfs__fprintf_build_id(stdout);
104
105 return perf_session__list_build_ids();
106}
107
108int cmd_buildid_list(int argc, const char **argv, const char *prefix __used)
109{
110 argc = parse_options(argc, argv, options, buildid_list_usage, 0);
111 setup_pager();
112 return __cmd_buildid_list();
113}
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * builtin-buildid-list.c
4 *
5 * Builtin buildid-list command: list buildids in perf.data, in the running
6 * kernel and in ELF files.
7 *
8 * Copyright (C) 2009, Red Hat Inc.
9 * Copyright (C) 2009, Arnaldo Carvalho de Melo <acme@redhat.com>
10 */
11#include "builtin.h"
12#include "perf.h"
13#include "util/build-id.h"
14#include "util/cache.h"
15#include "util/debug.h"
16#include <subcmd/parse-options.h>
17#include "util/session.h"
18#include "util/symbol.h"
19#include "util/data.h"
20#include <errno.h>
21
22static int sysfs__fprintf_build_id(FILE *fp)
23{
24 char sbuild_id[SBUILD_ID_SIZE];
25 int ret;
26
27 ret = sysfs__sprintf_build_id("/", sbuild_id);
28 if (ret != sizeof(sbuild_id))
29 return ret < 0 ? ret : -EINVAL;
30
31 return fprintf(fp, "%s\n", sbuild_id);
32}
33
34static int filename__fprintf_build_id(const char *name, FILE *fp)
35{
36 char sbuild_id[SBUILD_ID_SIZE];
37 int ret;
38
39 ret = filename__sprintf_build_id(name, sbuild_id);
40 if (ret != sizeof(sbuild_id))
41 return ret < 0 ? ret : -EINVAL;
42
43 return fprintf(fp, "%s\n", sbuild_id);
44}
45
46static bool dso__skip_buildid(struct dso *dso, int with_hits)
47{
48 return with_hits && !dso->hit;
49}
50
51static int perf_session__list_build_ids(bool force, bool with_hits)
52{
53 struct perf_session *session;
54 struct perf_data data = {
55 .file = {
56 .path = input_name,
57 },
58 .mode = PERF_DATA_MODE_READ,
59 .force = force,
60 };
61
62 symbol__elf_init();
63 /*
64 * See if this is an ELF file first:
65 */
66 if (filename__fprintf_build_id(input_name, stdout) > 0)
67 goto out;
68
69 session = perf_session__new(&data, false, &build_id__mark_dso_hit_ops);
70 if (session == NULL)
71 return -1;
72
73 /*
74 * We take all buildids when the file contains AUX area tracing data
75 * because we do not decode the trace because it would take too long.
76 */
77 if (!perf_data__is_pipe(&data) &&
78 perf_header__has_feat(&session->header, HEADER_AUXTRACE))
79 with_hits = false;
80
81 /*
82 * in pipe-mode, the only way to get the buildids is to parse
83 * the record stream. Buildids are stored as RECORD_HEADER_BUILD_ID
84 */
85 if (with_hits || perf_data__is_pipe(&data))
86 perf_session__process_events(session);
87
88 perf_session__fprintf_dsos_buildid(session, stdout, dso__skip_buildid, with_hits);
89 perf_session__delete(session);
90out:
91 return 0;
92}
93
94int cmd_buildid_list(int argc, const char **argv)
95{
96 bool show_kernel = false;
97 bool with_hits = false;
98 bool force = false;
99 const struct option options[] = {
100 OPT_BOOLEAN('H', "with-hits", &with_hits, "Show only DSOs with hits"),
101 OPT_STRING('i', "input", &input_name, "file", "input file name"),
102 OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
103 OPT_BOOLEAN('k', "kernel", &show_kernel, "Show current kernel build id"),
104 OPT_INCR('v', "verbose", &verbose, "be more verbose"),
105 OPT_END()
106 };
107 const char * const buildid_list_usage[] = {
108 "perf buildid-list [<options>]",
109 NULL
110 };
111
112 argc = parse_options(argc, argv, options, buildid_list_usage, 0);
113 setup_pager();
114
115 if (show_kernel)
116 return !(sysfs__fprintf_build_id(stdout) > 0);
117
118 return perf_session__list_build_ids(force, with_hits);
119}