From 49d50e52d4f39421d1eb5014889ac28c454f63f8 Mon Sep 17 00:00:00 2001
From: Michael Hanselmann <hansmi@google.com>
Date: Mon, 10 May 2010 17:21:59 +0200
Subject: [PATCH] QA: Add function create temporary backup file
Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>
---
qa/qa_utils.py | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/qa/qa_utils.py b/qa/qa_utils.py
index a4af63075..5a2c4e7d6 100644
--- a/qa/qa_utils.py
+++ b/qa/qa_utils.py
@@ -150,6 +150,7 @@ def UploadFile(node, src):
Caller needs to remove the returned file on the node when it's not needed
anymore.
+
"""
# Make sure nobody else has access to it while preserving local permissions
mode = os.stat(src).st_mode & 0700
@@ -171,6 +172,22 @@ def UploadFile(node, src):
f.close()
+def BackupFile(node, path):
+ """Creates a backup of a file on the node and returns the filename.
+
+ Caller needs to remove the returned file on the node when it's not needed
+ anymore.
+
+ """
+ cmd = ("tmp=$(tempfile --prefix .gnt --directory=$(dirname %s)) && "
+ "[[ -f \"$tmp\" ]] && "
+ "cp %s $tmp && "
+ "echo $tmp") % (utils.ShellQuote(path), utils.ShellQuote(path))
+
+ # Return temporary filename
+ return GetCommandOutput(node, cmd).strip()
+
+
def _ResolveName(cmd, key):
"""Helper function.
--
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