Adding perf_data__update_dir function to update
size for every file within the perf.data directory.

Link: http://lkml.kernel.org/n/tip-3ii12l48u4tyvrzxo1797...@git.kernel.org
Signed-off-by: Jiri Olsa <jo...@kernel.org>
---
 tools/perf/util/data.c | 20 ++++++++++++++++++++
 tools/perf/util/data.h |  1 +
 2 files changed, 21 insertions(+)

diff --git a/tools/perf/util/data.c b/tools/perf/util/data.c
index e28fd0fde5e0..d568975c5ee3 100644
--- a/tools/perf/util/data.c
+++ b/tools/perf/util/data.c
@@ -124,6 +124,26 @@ int perf_data__open_dir(struct perf_data *data)
        return ret;
 }
 
+int perf_data__update_dir(struct perf_data *data)
+{
+       int i;
+
+       if (WARN_ON(!data->is_dir))
+               return -EINVAL;
+
+       for (i = 0; i < data->dir.nr; i++) {
+               struct perf_data_file *file = &data->dir.files[i];
+               struct stat st;
+
+               if (fstat(file->fd, &st))
+                       return -1;
+
+               file->size = st.st_size;
+       }
+
+       return 0;
+}
+
 static bool check_pipe(struct perf_data *data)
 {
        struct stat st;
diff --git a/tools/perf/util/data.h b/tools/perf/util/data.h
index 06aefeda311f..0deeb1af9f54 100644
--- a/tools/perf/util/data.h
+++ b/tools/perf/util/data.h
@@ -79,4 +79,5 @@ int perf_data__switch(struct perf_data *data,
 int perf_data__create_dir(struct perf_data *data, int nr);
 int perf_data__open_dir(struct perf_data *data);
 void perf_data__close_dir(struct perf_data *data);
+int perf_data__update_dir(struct perf_data *data);
 #endif /* __PERF_DATA_H */
-- 
2.17.2

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