X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/6ad68ad8c829a59953913ae034e63ed689562c82..824eec7e595ba4d1022900f24173f335ba723f8c:/src/common/filefn.cpp

diff --git a/src/common/filefn.cpp b/src/common/filefn.cpp
index b9053ba8ac..80a5f762a1 100644
--- a/src/common/filefn.cpp
+++ b/src/common/filefn.cpp
@@ -1408,8 +1408,7 @@ wxString wxFindFirstFile(const wxString& spec, int flags)
     if ( !wxEndsWithPathSeparator(gs_dirPath ) )
         gs_dirPath << wxFILE_SEP_PATH;
 
-    if (gs_dir)
-        delete gs_dir;
+    delete gs_dir; // can be NULL, this is ok
     gs_dir = new wxDir(gs_dirPath);
 
     if ( !gs_dir->IsOpened() )
@@ -1439,7 +1438,7 @@ wxString wxFindFirstFile(const wxString& spec, int flags)
 
 wxString wxFindNextFile()
 {
-    wxASSERT_MSG( gs_dir, wxT("You must call wxFindFirstFile before!") );
+    wxCHECK_MSG( gs_dir, "", "You must call wxFindFirstFile before!" );
 
     wxString result;
     gs_dir->GetNext(&result);
@@ -1657,7 +1656,7 @@ wxString wxGetOSDirectory()
     wxChar buf[256];
     GetWindowsDirectory(buf, 256);
     return wxString(buf);
-#elif defined(__WXMAC__) && !defined(__WXOSX_IPHONE__)
+#elif defined(__WXMAC__) && wxOSX_USE_CARBON
     return wxMacFindFolder(kOnSystemDisk, 'macs', false);
 #else
     return wxEmptyString;
@@ -1841,12 +1840,20 @@ static bool wxCheckWin32Permission(const wxString& path, DWORD access)
     // quoting the MSDN: "To obtain a handle to a directory, call the
     // CreateFile function with the FILE_FLAG_BACKUP_SEMANTICS flag", but this
     // doesn't work under Win9x/ME but then it's not needed there anyhow
-    bool isdir = wxDirExists(path);
-    if ( isdir && wxGetOsVersion() == wxOS_WINDOWS_9X )
+    const DWORD dwAttr = ::GetFileAttributes(path.fn_str());
+    if ( dwAttr == INVALID_FILE_ATTRIBUTES )
+    {
+        // file probably doesn't exist at all
+        return false;
+    }
+
+    if ( wxGetOsVersion() == wxOS_WINDOWS_9X )
     {
         // FAT directories always allow all access, even if they have the
-        // readonly flag set
-        return true;
+        // readonly flag set, and FAT files can only be read-only
+        return (dwAttr & FILE_ATTRIBUTE_DIRECTORY) ||
+                    (access != GENERIC_WRITE ||
+                        !(dwAttr & FILE_ATTRIBUTE_READONLY));
     }
 
     HANDLE h = ::CreateFile
@@ -1856,7 +1863,9 @@ static bool wxCheckWin32Permission(const wxString& path, DWORD access)
                     FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
                     NULL,
                     OPEN_EXISTING,
-                    isdir ? FILE_FLAG_BACKUP_SEMANTICS : 0,
+                    dwAttr & FILE_ATTRIBUTE_DIRECTORY
+                        ? FILE_FLAG_BACKUP_SEMANTICS
+                        : 0,
                     NULL
                  );
     if ( h != INVALID_HANDLE_VALUE )