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