From c6bc0bdd73a9394d1a3abbb3181e7b2e82edab5e Mon Sep 17 00:00:00 2001
From: Ingo Weinhold <ingo_weinhold@gmx.de>
Date: Tue, 20 Jul 2010 08:44:30 +0000
Subject: [PATCH] When opening the device read-write failed, retry read-only.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37614 a95241bf-73f2-0310-859d-f6bbb57e9c96
---
 .../system/kernel/file_corruption/fs/Volume.cpp      | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/tests/system/kernel/file_corruption/fs/Volume.cpp b/src/tests/system/kernel/file_corruption/fs/Volume.cpp
index bd879f47e0..8886207974 100644
--- a/src/tests/system/kernel/file_corruption/fs/Volume.cpp
+++ b/src/tests/system/kernel/file_corruption/fs/Volume.cpp
@@ -70,7 +70,17 @@ status_t
 Volume::Init(const char* device)
 {
 	// open the device
-	fFD = open(device, IsReadOnly() ? O_RDONLY : O_RDWR);
+	if (!IsReadOnly()) {
+		fFD = open(device, O_RDWR);
+
+		// If opening read-write fails, we retry read-only.
+		if (fFD < 0)
+			fFlags |= B_FS_IS_READONLY;
+	}
+
+	if (IsReadOnly())
+		fFD = open(device, O_RDONLY);
+
 	if (fFD < 0)
 		return errno;