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
sysfs__fprintf_build_id(FILE * fp)22 static 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
filename__fprintf_build_id(const char * name,FILE * fp)34 static 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
dso__skip_buildid(struct dso * dso,int with_hits)46 static bool dso__skip_buildid(struct dso *dso, int with_hits)
47 {
48 return with_hits && !dso->hit;
49 }
50
perf_session__list_build_ids(bool force,bool with_hits)51 static int perf_session__list_build_ids(bool force, bool with_hits)
52 {
53 struct perf_session *session;
54 struct perf_data_file file = {
55 .path = input_name,
56 .mode = PERF_DATA_MODE_READ,
57 .force = force,
58 };
59
60 symbol__elf_init();
61 /*
62 * See if this is an ELF file first:
63 */
64 if (filename__fprintf_build_id(input_name, stdout) > 0)
65 goto out;
66
67 session = perf_session__new(&file, false, &build_id__mark_dso_hit_ops);
68 if (session == NULL)
69 return -1;
70
71 /*
72 * We take all buildids when the file contains AUX area tracing data
73 * because we do not decode the trace because it would take too long.
74 */
75 if (!perf_data_file__is_pipe(&file) &&
76 perf_header__has_feat(&session->header, HEADER_AUXTRACE))
77 with_hits = false;
78
79 /*
80 * in pipe-mode, the only way to get the buildids is to parse
81 * the record stream. Buildids are stored as RECORD_HEADER_BUILD_ID
82 */
83 if (with_hits || perf_data_file__is_pipe(&file))
84 perf_session__process_events(session);
85
86 perf_session__fprintf_dsos_buildid(session, stdout, dso__skip_buildid, with_hits);
87 perf_session__delete(session);
88 out:
89 return 0;
90 }
91
cmd_buildid_list(int argc,const char ** argv)92 int cmd_buildid_list(int argc, const char **argv)
93 {
94 bool show_kernel = false;
95 bool with_hits = false;
96 bool force = false;
97 const struct option options[] = {
98 OPT_BOOLEAN('H', "with-hits", &with_hits, "Show only DSOs with hits"),
99 OPT_STRING('i', "input", &input_name, "file", "input file name"),
100 OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
101 OPT_BOOLEAN('k', "kernel", &show_kernel, "Show current kernel build id"),
102 OPT_INCR('v', "verbose", &verbose, "be more verbose"),
103 OPT_END()
104 };
105 const char * const buildid_list_usage[] = {
106 "perf buildid-list [<options>]",
107 NULL
108 };
109
110 argc = parse_options(argc, argv, options, buildid_list_usage, 0);
111 setup_pager();
112
113 if (show_kernel)
114 return !(sysfs__fprintf_build_id(stdout) > 0);
115
116 return perf_session__list_build_ids(force, with_hits);
117 }
118