genericfstree

Documentation

Overview

Package genericfstree provides tools for implementing vfs.FilesystemImpls where a single statically-determined lock or set of locks is sufficient to ensure that a Dentry's name and parent are contextually immutable.

Clients using this package must use the go_template_instance rule in tools/go_generics/defs.bzl to create an instantiation of this template package, providing types to use in place of Dentry.

Index

• func DebugPathname(d *Dentry) string
• func IsAncestorDentry(d, d2 *Dentry) bool
• func IsDescendant(vfsroot *vfs.Dentry, d *Dentry) bool
• func PrependPath(vfsroot vfs.VirtualDentry, mnt *vfs.Mount, d *Dentry, b *fspath.Builder) error
• type Dentry
  • func ParentOrSelf(d *Dentry) *Dentry

Functions

func DebugPathname

func DebugPathname(d *Dentry) string

DebugPathname returns a pathname to d relative to its filesystem root. DebugPathname does not correspond to any Linux function; it's used to generate dentry pathnames for debugging.

func IsAncestorDentry

func IsAncestorDentry(d, d2 *Dentry) bool

IsAncestorDentry returns true if d is an ancestor of d2; that is, d is either d2's parent or an ancestor of d2's parent.

func IsDescendant

func IsDescendant(vfsroot *vfs.Dentry, d *Dentry) bool

IsDescendant returns true if vd is a descendant of vfsroot or if vd and vfsroot are the same dentry.

func PrependPath

func PrependPath(vfsroot vfs.VirtualDentry, mnt *vfs.Mount, d *Dentry, b *fspath.Builder) error

PrependPath is a generic implementation of FilesystemImpl.PrependPath().

Types

type Dentry

type Dentry struct {
	// contains filtered or unexported fields
}

Dentry is a required type parameter that is a struct with the given fields.

+stateify savable

func ParentOrSelf

func ParentOrSelf(d *Dentry) *Dentry

ParentOrSelf returns d.parent. If d.parent is nil, ParentOrSelf returns d.