"""Filesystem exceptions."""


class FilesystemError(Exception):
    """Base exception for filesystem operations."""

    pass


class PathTraversalError(FilesystemError):
    """Raised when path traversal attack is detected."""

    pass


class FileNotFoundError(FilesystemError):
    """Raised when a file is not found."""

    pass


class PermissionDeniedError(FilesystemError):
    """Raised when permission is denied."""

    pass