[tip:perf/core] perf buildid-cache: Use lsdir() for looking up buildid caches

[tip-bot for Masami Hiramatsu]

Commit-ID:  d65444d2fba98dcd4fa028ffada39c36a46f0038
Gitweb:     http://git.kernel.org/tip/d65444d2fba98dcd4fa028ffada39c36a46f0038
Author:     Masami Hiramatsu <masami.hiramatsu.pt@xxxxxxxxxxx>
AuthorDate: Wed, 11 May 2016 22:52:17 +0900
Committer:  Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Wed, 11 May 2016 13:06:08 -0300

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@xxxxxxxxxx>
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@xxxxxxxxxxx>
Cc: Ananth N Mavinakayanahalli <ananth@xxxxxxxxxxxxxxxxxx>
Cc: Brendan Gregg <brendan.d.gregg@xxxxxxxxx>
Cc: Hemant Kumar <hemant@xxxxxxxxxxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Link: 20160511135217.23943.94596.stgit@devbox">http://lkml.kernel.org/r/20160511135217.23943.94596.stgit@devbox
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/util/build-id.c | 30 ++++--------------------------
 1 file changed, 4 insertions(+), 26 deletions(-)

diff --git a/tools/perf/util/build-id.c b/tools/perf/util/build-id.c
index b6ecf87..bff425e 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;
 }