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/data_map.h"
  13 #include "util/debug.h"
  14 #include "util/parse-options.h"
  15 #include "util/session.h"
  16 #include "util/symbol.h"
  17
  18 static char const *input_name = "perf.data";
  19 static int force;
  20
  21 static const char *const buildid_list_usage[] = {
  22         "perf buildid-list [<options>]",
  23         NULL
  24 };
  25
  26 static const struct option options[] = {
  27         OPT_STRING('i', "input", &input_name, "file",
  28                     "input file name"),
  29         OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
  30         OPT_BOOLEAN('v', "verbose", &verbose,
  31                     "be more verbose"),
  32         OPT_END()
  33 };
  34
  35 static int perf_file_section__process_buildids(struct perf_file_section *self,
  36                                                int feat, int fd)
  37 {
  38         if (feat != HEADER_BUILD_ID)
  39                 return 0;
  40
  41         if (lseek(fd, self->offset, SEEK_SET) < 0) {
  42                 pr_warning("Failed to lseek to %Ld offset for buildids!\n",
  43                            self->offset);
  44                 return -1;
  45         }
  46
  47         if (perf_header__read_build_ids(fd, self->offset, self->size)) {
  48                 pr_warning("Failed to read buildids!\n");
  49                 return -1;
  50         }
  51
  52         return 0;
  53 }
  54
  55 static int __cmd_buildid_list(void)
  56 {
  57         int err = -1;
  58         struct perf_session *session = perf_session__new(input_name, O_RDONLY, force);
  59
  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 }