peridot/vendor/github.com/go-git/go-billy/v5/osfs/os_chroot.go

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//go:build !js
// +build !js
package osfs
import (
"os"
"path/filepath"
"github.com/go-git/go-billy/v5"
"github.com/go-git/go-billy/v5/helper/chroot"
)
// ChrootOS is a legacy filesystem based on a "soft chroot" of the os filesystem.
// Although this is still the default os filesystem, consider using BoundOS instead.
//
// Behaviours of note:
// 1. A "soft chroot" translates the base dir to "/" for the purposes of the
// fs abstraction.
// 2. Symlinks targets may be modified to be kept within the chroot bounds.
// 3. Some file modes does not pass-through the fs abstraction.
// 4. The combination of 1 and 2 may cause go-git to think that a Git repository
// is dirty, when in fact it isn't.
type ChrootOS struct{}
func newChrootOS(baseDir string) billy.Filesystem {
return chroot.New(&ChrootOS{}, baseDir)
}
func (fs *ChrootOS) Create(filename string) (billy.File, error) {
return fs.OpenFile(filename, os.O_RDWR|os.O_CREATE|os.O_TRUNC, defaultCreateMode)
}
func (fs *ChrootOS) OpenFile(filename string, flag int, perm os.FileMode) (billy.File, error) {
return openFile(filename, flag, perm, fs.createDir)
}
func (fs *ChrootOS) createDir(fullpath string) error {
dir := filepath.Dir(fullpath)
if dir != "." {
if err := os.MkdirAll(dir, defaultDirectoryMode); err != nil {
return err
}
}
return nil
}
func (fs *ChrootOS) ReadDir(dir string) ([]os.FileInfo, error) {
return readDir(dir)
}
func (fs *ChrootOS) Rename(from, to string) error {
if err := fs.createDir(to); err != nil {
return err
}
return rename(from, to)
}
func (fs *ChrootOS) MkdirAll(path string, perm os.FileMode) error {
return os.MkdirAll(path, defaultDirectoryMode)
}
func (fs *ChrootOS) Open(filename string) (billy.File, error) {
return fs.OpenFile(filename, os.O_RDONLY, 0)
}
func (fs *ChrootOS) Stat(filename string) (os.FileInfo, error) {
return os.Stat(filename)
}
func (fs *ChrootOS) Remove(filename string) error {
return os.Remove(filename)
}
func (fs *ChrootOS) TempFile(dir, prefix string) (billy.File, error) {
if err := fs.createDir(dir + string(os.PathSeparator)); err != nil {
return nil, err
}
return tempFile(dir, prefix)
}
func (fs *ChrootOS) Join(elem ...string) string {
return filepath.Join(elem...)
}
func (fs *ChrootOS) RemoveAll(path string) error {
return os.RemoveAll(filepath.Clean(path))
}
func (fs *ChrootOS) Lstat(filename string) (os.FileInfo, error) {
return os.Lstat(filepath.Clean(filename))
}
func (fs *ChrootOS) Symlink(target, link string) error {
if err := fs.createDir(link); err != nil {
return err
}
return os.Symlink(target, link)
}
func (fs *ChrootOS) Readlink(link string) (string, error) {
return os.Readlink(link)
}
// Capabilities implements the Capable interface.
func (fs *ChrootOS) Capabilities() billy.Capability {
return billy.DefaultCapabilities
}