1 files changed, 43 insertions, 3 deletions

diff --git a/tools/perf/util/data.c b/tools/perf/util/data.c
index 88fba2ba549f..c47aa34fdc0a 100644
--- a/tools/perf/util/data.c
+++ b/tools/perf/util/data.c
@@ -76,6 +76,13 @@ int perf_data__open_dir(struct perf_data *data)
 	DIR *dir;
 	int nr = 0;
 
+	/*
+	 * Directory containing a single regular perf data file which is already
+	 * open, means there is nothing more to do here.
+	 */
+	if (perf_data__is_single_file(data))
+		return 0;
+
 	if (WARN_ON(!data->is_dir))
 		return -EINVAL;
 
@@ -96,7 +103,7 @@ int perf_data__open_dir(struct perf_data *data)
 		if (stat(path, &st))
 			continue;
 
-		if (!S_ISREG(st.st_mode) || strncmp(dent->d_name, "data", 4))
+		if (!S_ISREG(st.st_mode) || strncmp(dent->d_name, "data.", 5))
 			continue;
 
 		ret = -ENOMEM;
@@ -306,7 +313,7 @@ static int open_dir(struct perf_data *data)
 	 * So far we open only the header, so we can read the data version and
 	 * layout.
 	 */
-	if (asprintf(&data->file.path, "%s/header", data->path) < 0)
+	if (asprintf(&data->file.path, "%s/data", data->path) < 0)
 		return -1;
 
 	if (perf_data__is_write(data) &&
@@ -406,7 +413,7 @@ unsigned long perf_data__size(struct perf_data *data)
 	u64 size = data->file.size;
 	int i;
 
-	if (!data->is_dir)
+	if (perf_data__is_single_file(data))
 		return size;
 
 	for (i = 0; i < data->dir.nr; i++) {
@@ -417,3 +424,36 @@ unsigned long perf_data__size(struct perf_data *data)
 
 	return size;
 }
+
+int perf_data__make_kcore_dir(struct perf_data *data, char *buf, size_t buf_sz)
+{
+	int ret;
+
+	if (!data->is_dir)
+		return -1;
+
+	ret = snprintf(buf, buf_sz, "%s/kcore_dir", data->path);
+	if (ret < 0 || (size_t)ret >= buf_sz)
+		return -1;
+
+	return mkdir(buf, S_IRWXU);
+}
+
+char *perf_data__kallsyms_name(struct perf_data *data)
+{
+	char *kallsyms_name;
+	struct stat st;
+
+	if (!data->is_dir)
+		return NULL;
+
+	if (asprintf(&kallsyms_name, "%s/kcore_dir/kallsyms", data->path) < 0)
+		return NULL;
+
+	if (stat(kallsyms_name, &st)) {
+		free(kallsyms_name);
+		return NULL;
+	}
+
+	return kallsyms_name;
+}