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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/*
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 <subcmd/parse-options.h>
16#include "util/session.h"
17#include "util/symbol.h"
18#include "util/data.h"
19
20static int sysfs__fprintf_build_id(FILE *fp)
21{
22 char sbuild_id[SBUILD_ID_SIZE];
23 int ret;
24
25 ret = sysfs__sprintf_build_id("/", sbuild_id);
26 if (ret != sizeof(sbuild_id))
27 return ret < 0 ? ret : -EINVAL;
28
29 return fprintf(fp, "%s\n", sbuild_id);
30}
31
32static int filename__fprintf_build_id(const char *name, FILE *fp)
33{
34 char sbuild_id[SBUILD_ID_SIZE];
35 int ret;
36
37 ret = filename__sprintf_build_id(name, sbuild_id);
38 if (ret != sizeof(sbuild_id))
39 return ret < 0 ? ret : -EINVAL;
40
41 return fprintf(fp, "%s\n", sbuild_id);
42}
43
44static bool dso__skip_buildid(struct dso *dso, int with_hits)
45{
46 return with_hits && !dso->hit;
47}
48
49static int perf_session__list_build_ids(bool force, bool with_hits)
50{
51 struct perf_session *session;
52 struct perf_data_file file = {
53 .path = input_name,
54 .mode = PERF_DATA_MODE_READ,
55 .force = force,
56 };
57
58 symbol__elf_init();
59 /*
60 * See if this is an ELF file first:
61 */
62 if (filename__fprintf_build_id(input_name, stdout) > 0)
63 goto out;
64
65 session = perf_session__new(&file, false, &build_id__mark_dso_hit_ops);
66 if (session == NULL)
67 return -1;
68
69 /*
70 * We take all buildids when the file contains AUX area tracing data
71 * because we do not decode the trace because it would take too long.
72 */
73 if (!perf_data_file__is_pipe(&file) &&
74 perf_header__has_feat(&session->header, HEADER_AUXTRACE))
75 with_hits = false;
76
77 /*
78 * in pipe-mode, the only way to get the buildids is to parse
79 * the record stream. Buildids are stored as RECORD_HEADER_BUILD_ID
80 */
81 if (with_hits || perf_data_file__is_pipe(&file))
82 perf_session__process_events(session);
83
84 perf_session__fprintf_dsos_buildid(session, stdout, dso__skip_buildid, with_hits);
85 perf_session__delete(session);
86out:
87 return 0;
88}
89
90int cmd_buildid_list(int argc, const char **argv,
91 const char *prefix __maybe_unused)
92{
93 bool show_kernel = false;
94 bool with_hits = false;
95 bool force = false;
96 const struct option options[] = {
97 OPT_BOOLEAN('H', "with-hits", &with_hits, "Show only DSOs with hits"),
98 OPT_STRING('i', "input", &input_name, "file", "input file name"),
99 OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
100 OPT_BOOLEAN('k', "kernel", &show_kernel, "Show current kernel build id"),
101 OPT_INCR('v', "verbose", &verbose, "be more verbose"),
102 OPT_END()
103 };
104 const char * const buildid_list_usage[] = {
105 "perf buildid-list [<options>]",
106 NULL
107 };
108
109 argc = parse_options(argc, argv, options, buildid_list_usage, 0);
110 setup_pager();
111
112 if (show_kernel)
113 return !(sysfs__fprintf_build_id(stdout) > 0);
114
115 return perf_session__list_build_ids(force, with_hits);
116}