tstor/fuse/handler.go
2021-12-21 20:36:16 +01:00

78 lines
1.4 KiB
Go

package fuse
import (
"os"
"path/filepath"
"runtime"
"github.com/billziss-gh/cgofuse/fuse"
"github.com/distribyted/distribyted/fs"
"github.com/rs/zerolog/log"
)
type Handler struct {
fuseAllowOther bool
path string
host *fuse.FileSystemHost
}
func NewHandler(fuseAllowOther bool, path string) *Handler {
return &Handler{
fuseAllowOther: fuseAllowOther,
path: path,
}
}
func (s *Handler) Mount(fss map[string]fs.Filesystem) error {
folder := s.path
// On windows, the folder must don't exist
if runtime.GOOS == "windows" {
folder = filepath.Dir(s.path)
}
if filepath.VolumeName(folder) == "" {
if err := os.MkdirAll(folder, 0744); err != nil && !os.IsExist(err) {
return err
}
}
cfs, err := fs.NewContainerFs(fss)
if err != nil {
return err
}
host := fuse.NewFileSystemHost(NewFS(cfs))
// TODO improve error handling here
go func() {
var config []string
if s.fuseAllowOther {
config = append(config, "-o", "allow_other")
}
ok := host.Mount(s.path, config)
if !ok {
log.Error().Str("path", s.path).Msg("error trying to mount filesystem")
}
}()
s.host = host
log.Info().Str("path", s.path).Msg("starting FUSE mount")
return nil
}
func (s *Handler) Unmount() {
if s.host == nil {
return
}
ok := s.host.Unmount()
if !ok {
//TODO try to force unmount if possible
log.Error().Str("path", s.path).Msg("unmount failed")
}
}