LXR linux/tools/perf/builtin-buildid-cache.c

   1/*
   2 * builtin-buildid-cache.c
   3 *
   4 * Builtin buildid-cache command: Manages build-id cache
   5 *
   6 * Copyright (C) 2010, Red Hat Inc.
   7 * Copyright (C) 2010, 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/header.h"
  14#include "util/parse-options.h"
  15#include "util/strlist.h"
  16#include "util/build-id.h"
  17#include "util/symbol.h"
  18
  19static int build_id_cache__add_file(const char *filename, const char *debugdir)
  20{
  21        char sbuild_id[BUILD_ID_SIZE * 2 + 1];
  22        u8 build_id[BUILD_ID_SIZE];
  23        int err;
  24
  25        if (filename__read_build_id(filename, &build_id, sizeof(build_id)) < 0) {
  26                pr_debug("Couldn't read a build-id in %s\n", filename);
  27                return -1;
  28        }
  29
  30        build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
  31        err = build_id_cache__add_s(sbuild_id, debugdir, filename,
  32                                    false, false);
  33        if (verbose)
  34                pr_info("Adding %s %s: %s\n", sbuild_id, filename,
  35                        err ? "FAIL" : "Ok");
  36        return err;
  37}
  38
  39static int build_id_cache__remove_file(const char *filename,
  40                                       const char *debugdir)
  41{
  42        u8 build_id[BUILD_ID_SIZE];
  43        char sbuild_id[BUILD_ID_SIZE * 2 + 1];
  44
  45        int err;
  46
  47        if (filename__read_build_id(filename, &build_id, sizeof(build_id)) < 0) {
  48                pr_debug("Couldn't read a build-id in %s\n", filename);
  49                return -1;
  50        }
  51
  52        build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
  53        err = build_id_cache__remove_s(sbuild_id, debugdir);
  54        if (verbose)
  55                pr_info("Removing %s %s: %s\n", sbuild_id, filename,
  56                        err ? "FAIL" : "Ok");
  57
  58        return err;
  59}
  60
  61int cmd_buildid_cache(int argc, const char **argv,
  62                      const char *prefix __maybe_unused)
  63{
  64        struct strlist *list;
  65        struct str_node *pos;
  66        char debugdir[PATH_MAX];
  67        char const *add_name_list_str = NULL,
  68                   *remove_name_list_str = NULL;
  69        const struct option buildid_cache_options[] = {
  70        OPT_STRING('a', "add", &add_name_list_str,
  71                   "file list", "file(s) to add"),
  72        OPT_STRING('r', "remove", &remove_name_list_str, "file list",
  73                    "file(s) to remove"),
  74        OPT_INCR('v', "verbose", &verbose, "be more verbose"),
  75        OPT_END()
  76        };
  77        const char * const buildid_cache_usage[] = {
  78                "perf buildid-cache [<options>]",
  79                NULL
  80        };
  81
  82        argc = parse_options(argc, argv, buildid_cache_options,
  83                             buildid_cache_usage, 0);
  84
  85        if (symbol__init() < 0)
  86                return -1;
  87
  88        setup_pager();
  89
  90        snprintf(debugdir, sizeof(debugdir), "%s", buildid_dir);
  91
  92        if (add_name_list_str) {
  93                list = strlist__new(true, add_name_list_str);
  94                if (list) {
  95                        strlist__for_each(pos, list)
  96                                if (build_id_cache__add_file(pos->s, debugdir)) {
  97                                        if (errno == EEXIST) {
  98                                                pr_debug("%s already in the cache\n",
  99                                                         pos->s);
 100                                                continue;
 101                                        }
 102                                        pr_warning("Couldn't add %s: %s\n",
 103                                                   pos->s, strerror(errno));
 104                                }
 105
 106                        strlist__delete(list);
 107                }
 108        }
 109
 110        if (remove_name_list_str) {
 111                list = strlist__new(true, remove_name_list_str);
 112                if (list) {
 113                        strlist__for_each(pos, list)
 114                                if (build_id_cache__remove_file(pos->s, debugdir)) {
 115                                        if (errno == ENOENT) {
 116                                                pr_debug("%s wasn't in the cache\n",
 117                                                         pos->s);
 118                                                continue;
 119                                        }
 120                                        pr_warning("Couldn't remove %s: %s\n",
 121                                                   pos->s, strerror(errno));
 122                                }
 123
 124                        strlist__delete(list);
 125                }
 126        }
 127
 128        return 0;
 129}
 130