atomic write wallet file

10 years ago · 4a28c88946
1 changed files with 2 additions and 1 deletions
--- a/lib/wallet.py
+++ b/lib/wallet.py
@ -136,8 +136,9 @@ class WalletStorage(object):
    def write(self):
        assert not threading.currentThread().isDaemon()
        s = json.dumps(self.data, indent=4, sort_keys=True)
-        with open(self.path,"w") as f:
+        with open(self.path + '.tmp', "w") as f:
            f.write(s)
+        os.rename(self.path + '.tmp', self.path)
        if 'ANDROID_DATA' not in os.environ:
            import stat
            os.chmod(self.path,stat.S_IREAD | stat.S_IWRITE)