perf data: Add perf_data__update_dir() function

Add perf_data__update_dir() to update the size for every file within the
perf.data directory.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/20190308134745.5057-4-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 20 insertions, 0 deletions

diff --git a/tools/perf/util/data.c b/tools/perf/util/data.c
index 18fa8d4614eb..5d0f26aef77f 100644
--- a/tools/perf/util/data.c
+++ b/tools/perf/util/data.c
@@ -124,6 +124,26 @@ out_err:
         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;