fs

Documentation

Overview

Package fs provides a virtual filesystem interface for SCALIBR scans and related helper functions.

Index

• func NewReaderAt(ioReader io.Reader) (io.ReaderAt, error)
• type FS
  • func DirFS(root string) FS
• type ScanRoot
  • func RealFSScanRoot(path string) *ScanRoot
  • func RealFSScanRoots(path string) []*ScanRoot
  • func (r *ScanRoot) IsVirtual() bool
  • func (r *ScanRoot) WithAbsolutePath() (*ScanRoot, error)

Functions

func NewReaderAt

func NewReaderAt(ioReader io.Reader) (io.ReaderAt, error)

NewReaderAt converts an io.Reader into an io.ReaderAt.

Types

type FS

type FS interface {
	fs.FS
	fs.ReadDirFS
	fs.StatFS
}

FS is a filesystem interface that allows the opening of files, reading of directories, and performing stat on files.

FS implementations may return ErrNotImplemented for `Open`, `ReadDir` and `Stat`. Extractor implementations must decide whether the error is fatal or can be ignored.

FS implementations MUST implement io.ReaderAt for opened files to enable random access.

func DirFS

func DirFS(root string) FS

DirFS returns an FS implementation that accesses the real filesystem at the given root.

type ScanRoot

type ScanRoot struct {
	// A virtual filesystem for file access, rooted at the scan root.
	FS FS
	// The path of the scan root. Empty if this is a virtual filesystem and the
	// scanning environment doesn't support the DirectFS requirement.
	Path string
}

ScanRoot defines a root directory to start a scan from. mounted to a local dir.

func RealFSScanRoot

func RealFSScanRoot(path string) *ScanRoot

RealFSScanRoot returns a ScanRoot array the given root path on the real filesystem SCALIBR is running on.

func RealFSScanRoots

func RealFSScanRoots(path string) []*ScanRoot

RealFSScanRoots returns a one-element ScanRoot array representing the given root path on the real filesystem SCALIBR is running on.

func (*ScanRoot) IsVirtual

func (r *ScanRoot) IsVirtual() bool

IsVirtual returns true if the scan root represents the root of a virtual filesystem, i.e. one with no real location on the disk of the scanned host.

func (*ScanRoot) WithAbsolutePath

func (r *ScanRoot) WithAbsolutePath() (*ScanRoot, error)

WithAbsolutePath returns a copy of the ScanRoot with the Path set an absolute path.