perf buildid-cache: Use lsdir() for looking up buildid caches

Use new lsdir() for looking up buildid caches. This changes logic a bit
to ignore all dot files, since the build-id cache must not start with
dot.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Hemant Kumar <hemant@linux.vnet.ibm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20160511135217.23943.94596.stgit@devbox
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 4 insertions, 26 deletions

diff --git a/tools/perf/util/build-id.c b/tools/perf/util/build-id.c
index b6ecf87bc3e3..bff425e1232c 100644
--- a/tools/perf/util/build-id.c
+++ b/tools/perf/util/build-id.c
@@ -365,39 +365,17 @@ static char *build_id_cache__dirname_from_path(const char *name,
 int build_id_cache__list_build_ids(const char *pathname,
                                    struct strlist **result)
 {
-        struct strlist *list;
         char *dir_name;
-        DIR *dir;
-        struct dirent *d;
         int ret = 0;
 
-        list = strlist__new(NULL, NULL);
         dir_name = build_id_cache__dirname_from_path(pathname, false, false);
-        if (!list || !dir_name) {
-                ret = -ENOMEM;
-                goto out;
-        }
+        if (!dir_name)
+                return -ENOMEM;
 
-        /* List up all dirents */
-        dir = opendir(dir_name);
-        if (!dir) {
+        *result = lsdir(dir_name, lsdir_no_dot_filter);
+        if (!*result)
                 ret = -errno;
-                goto out;
-        }
-
-        while ((d = readdir(dir)) != NULL) {
-                if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
-                        continue;
-                strlist__add(list, d->d_name);
-        }
-        closedir(dir);
-
-out:
         free(dir_name);
-        if (ret)
-                strlist__delete(list);
-        else
-                *result = list;
 
         return ret;
 }