DrvFS file does not have metadata (default) The result depends on if the file already has existing metadata. Reading file permissions from an existing Windows file These scenarios occur when you are accessing your Windows files from WSL, most likely via /mnt/c. Accessing Files in the Windows drive file system (DrvFS) from Linux File Access Scenariosīelow is a description of how permissions are determined when accessing files in different ways using the Windows Subsystem for Linux. This makes it much faster to determine the kind of file in a given directory without having to query its extended attributes. WSL can add four NTFS extended attributes: Attribute Nameįile mode (File systems permission octals and type, e.g: 0777)Īdditionally, any file that is not a regular file or directory (e.g: symlinks, FIFOs, block devices, unix sockets, and character devices) also have an NTFS reparse point. When metadata is enabled as a mount option in WSL, extended attributes on Windows NT files can be added and interpreted to supply Linux file system permissions. When accessing Windows files from WSL the file permissions are either calculated from Windows permissions, or are read from metadata that has been added to the file by WSL. This documentation assumes a basic understanding of the Linux file system permissions structure and the umask command. This page details how Linux file permissions are interpreted across the Windows Subsystem for Linux, especially when accessing resources inside of Windows on the NT file system.
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