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fs.go
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fs.go
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package aferofuse
import (
"os"
"time"
"github.com/hanwen/go-fuse/v2/fuse"
"github.com/hanwen/go-fuse/v2/fuse/nodefs"
"github.com/hanwen/go-fuse/v2/fuse/pathfs"
"github.com/spf13/afero"
)
type aferoFuseFs struct {
pathfs.FileSystem
afs afero.Fs
}
func (a *aferoFuseFs) String() string {
return a.afs.Name()
}
func (a *aferoFuseFs) GetAttr(name string, context *fuse.Context) (*fuse.Attr, fuse.Status) {
stat, err := a.afs.Stat(name)
return fuse.ToAttr(stat), fuse.ToStatus(err)
}
func (a *aferoFuseFs) Chmod(name string, mode uint32, context *fuse.Context) fuse.Status {
err := a.afs.Chmod(name, os.FileMode(mode))
if err != nil {
return fuse.ToStatus(err)
}
return fuse.OK
}
func (a *aferoFuseFs) Chown(name string, uid uint32, gid uint32, context *fuse.Context) fuse.Status {
err := a.afs.Chown(name, int(uid), int(gid))
if err != nil {
return fuse.ToStatus(err)
}
return fuse.OK
}
func (a *aferoFuseFs) Utimens(name string, atime *time.Time, mtime *time.Time, context *fuse.Context) fuse.Status {
if atime == nil || mtime == nil {
return fuse.EINVAL
}
err := a.afs.Chtimes(name, *atime, *mtime)
if err != nil {
return fuse.ToStatus(err)
}
return fuse.OK
}
func (a *aferoFuseFs) Truncate(name string, size uint64, context *fuse.Context) fuse.Status {
file, err := a.afs.OpenFile(name, os.O_WRONLY, 0)
defer file.Close()
if err != nil {
return fuse.ToStatus(err)
}
return fuse.ToStatus(file.Truncate(int64(size)))
}
func (a *aferoFuseFs) Mkdir(name string, mode uint32, context *fuse.Context) fuse.Status {
return fuse.ToStatus(a.afs.Mkdir(name, os.FileMode(mode)))
}
func (a *aferoFuseFs) Rename(oldName, newName string, context *fuse.Context) fuse.Status {
return fuse.ToStatus(a.afs.Rename(oldName, newName))
}
func (a *aferoFuseFs) Rmdir(name string, context *fuse.Context) fuse.Status {
return fuse.ToStatus(a.afs.Remove(name))
}
func (a *aferoFuseFs) Unlink(name string, context *fuse.Context) fuse.Status {
return a.Rmdir(name, context)
}
func (a *aferoFuseFs) Open(name string, flags uint32, context *fuse.Context) (nodefs.File, fuse.Status) {
file, err := a.afs.OpenFile(name, int(flags), 0755)
if err != nil {
return nil, fuse.ToStatus(err)
}
return &aferoFuseFile{
File: nodefs.NewDefaultFile(),
file: file,
}, fuse.ToStatus(nil)
}
func (a *aferoFuseFs) Create(name string, flags uint32, mode uint32, context *fuse.Context) (nodefs.File, fuse.Status) {
file, err := a.afs.OpenFile(name, int(flags), os.FileMode(mode))
if err != nil {
return nil, fuse.ToStatus(err)
}
return &aferoFuseFile{
File: nodefs.NewDefaultFile(),
file: file,
}, fuse.ToStatus(nil)
}
func (a *aferoFuseFs) OpenDir(name string, context *fuse.Context) ([]fuse.DirEntry, fuse.Status) {
files, err := afero.ReadDir(a.afs, name)
if err != nil {
return nil, fuse.ToStatus(err)
}
arr := make([]fuse.DirEntry, 0, len(files))
for _, v := range files {
arr = append(arr, fuse.DirEntry{
Name: v.Name(),
Mode: uint32(v.Mode()),
})
}
return arr, fuse.ToStatus(nil)
}
func (a *aferoFuseFs) Symlink(oldname string, newname string, context *fuse.Context) fuse.Status {
linker, ok := a.afs.(afero.Linker)
if !ok {
return fuse.ENOSYS
}
return fuse.ToStatus(linker.SymlinkIfPossible(oldname, newname))
}
func (a *aferoFuseFs) Readlink(name string, context *fuse.Context) (string, fuse.Status) {
linker, ok := a.afs.(afero.LinkReader)
if !ok {
return "", fuse.ENOSYS
}
str, err := linker.ReadlinkIfPossible(name)
return str, fuse.ToStatus(err)
}
func NewFuseFileSystem(afs afero.Fs) pathfs.FileSystem {
return pathfs.NewLockingFileSystem(&aferoFuseFs{
FileSystem: pathfs.NewDefaultFileSystem(),
afs: afs,
})
}