AMIGAOS4: Make isReadable return false for non-existent files

This also properly initializes _bIsValid for non-existent files.
For consistency, isWritable() is changed analogously to isReadable(),
even though it should not lead to changes in behaviour.

1 files changed, 7 insertions, 0 deletions

diff --git a/backends/fs/amigaos4/amigaos4-fs.cpp b/backends/fs/amigaos4/amigaos4-fs.cpp
index 6d713f10be..d0578307f4 100644
--- a/backends/fs/amigaos4/amigaos4-fs.cpp
+++ b/backends/fs/amigaos4/amigaos4-fs.cpp
@@ -81,6 +81,7 @@ AmigaOSFilesystemNode::AmigaOSFilesystemNode(const Common::String &p) {
 	_sDisplayName = ::lastPathComponent(_sPath);
 	_pFileLock = 0;
 	_bIsDirectory = false;
+	_bIsValid = false;
 
 	// Check whether the node exists and if it is a directory
 	struct ExamineData * pExd = IDOS->ExamineObjectTags(EX_StringNameInput,_sPath.c_str(),TAG_END);
@@ -332,6 +333,9 @@ AbstractFSNode *AmigaOSFilesystemNode::getParent() const {
 }
 
 bool AmigaOSFilesystemNode::isReadable() const {
+	if (!_bIsValid)
+		return false;
+
 	// Regular RWED protection flags are low-active or inverted, thus the negation.
 	// moreover pseudo root filesystem (null _pFileLock) is readable whatever the
 	// protection says
@@ -341,6 +345,9 @@ bool AmigaOSFilesystemNode::isReadable() const {
 }
 
 bool AmigaOSFilesystemNode::isWritable() const {
+	if (!_bIsValid)
+		return false;
+
 	// Regular RWED protection flags are low-active or inverted, thus the negation.
 	// moreover pseudo root filesystem (null _pFileLock) is never writable whatever
 	// the protection says (because of the pseudo nature)