| # Copyright (c) 2014 The Chromium Authors. All Rights Reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| """Generates json output of current disk usage. |
| |
| Argument 1: path mapped to the disk. |
| |
| Standard output: JSON object with keys: |
| capacity (float): disk capacity, in MiB. |
| used (float): disk usage, in MiB. |
| """ |
| |
| import json |
| import os |
| import sys |
| |
| stats = os.statvfs(sys.argv[1]) |
| data = { |
| 'capacity': stats.f_blocks * stats.f_frsize, |
| 'used': (stats.f_blocks - stats.f_bavail) * stats.f_frsize, |
| } |
| json.dump(data, sys.stdout) |
| print '' # put \n |
