perf session: Ditch register_perf_file_handler
[linux-2.6.git] / tools / perf / builtin-buildid-list.c
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 = perf_session__new(input_name, O_RDONLY, force);
58
59         if (session == NULL)
60                 return -1;
61
62         err = perf_header__process_sections(&session->header, session->fd,
63                                          perf_file_section__process_buildids);
64         if (err >= 0)
65                 dsos__fprintf_buildid(stdout);
66
67         perf_session__delete(session);
68         return err;
69 }
70
71 int cmd_buildid_list(int argc, const char **argv, const char *prefix __used)
72 {
73         argc = parse_options(argc, argv, options, buildid_list_usage, 0);
74         setup_pager();
75         return __cmd_buildid_list();
76 }