1 /*
2  * builtin-buildid-list.c
3  *
4  * Builtin buildid-list command: list buildids in perf.data
5  *
6  * Copyright (C) 2009, Red Hat Inc.
7  * Copyright (C) 2009, 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/parse-options.h"
14 #include "util/session.h"
15 #include "util/symbol.h"
16 
17 static char const *input_name = "perf.data";
18 static int force;
19 
20 static const char * const buildid_list_usage[] = {
21 	"perf buildid-list [<options>]",
22 	NULL
23 };
24 
25 static const struct option options[] = {
26 	OPT_STRING('i', "input", &input_name, "file",
27 		    "input file name"),
28 	OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
29 	OPT_BOOLEAN('v', "verbose", &verbose,
30 		    "be more verbose"),
31 	OPT_END()
32 };
33 
34 static int perf_file_section__process_buildids(struct perf_file_section *self,
35 					       int feat, int fd)
36 {
37 	if (feat != HEADER_BUILD_ID)
38 		return 0;
39 
40 	if (lseek(fd, self->offset, SEEK_SET) < 0) {
41 		pr_warning("Failed to lseek to %Ld offset for buildids!\n",
42 			   self->offset);
43 		return -1;
44 	}
45 
46 	if (perf_header__read_build_ids(fd, self->offset, self->size)) {
47 		pr_warning("Failed to read buildids!\n");
48 		return -1;
49 	}
50 
51 	return 0;
52 }
53 
54 static int __cmd_buildid_list(void)
55 {
56 	int err = -1;
57 	struct perf_session *session;
58 
59 	session = perf_session__new(input_name, O_RDONLY, force);
60 	if (session == NULL)
61 		return -1;
62 
63 	err = perf_header__process_sections(&session->header, session->fd,
64 				         perf_file_section__process_buildids);
65 	if (err >= 0)
66 		dsos__fprintf_buildid(stdout);
67 
68 	perf_session__delete(session);
69 	return err;
70 }
71 
72 int cmd_buildid_list(int argc, const char **argv, const char *prefix __used)
73 {
74 	argc = parse_options(argc, argv, options, buildid_list_usage, 0);
75 	setup_pager();
76 	return __cmd_buildid_list();
77 }
78