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package filesys
import ( "bytes" "context" "math" "os" "strings" "syscall" "time"
"github.com/seaweedfs/fuse" "github.com/seaweedfs/fuse/fs"
"github.com/chrislusf/seaweedfs/weed/filer" "github.com/chrislusf/seaweedfs/weed/filesys/meta_cache" "github.com/chrislusf/seaweedfs/weed/glog" "github.com/chrislusf/seaweedfs/weed/pb/filer_pb" "github.com/chrislusf/seaweedfs/weed/util" )
type Dir struct { name string wfs *WFS entry *filer_pb.Entry parent *Dir }
var _ = fs.Node(&Dir{}) var _ = fs.NodeCreater(&Dir{}) var _ = fs.NodeMknoder(&Dir{}) var _ = fs.NodeMkdirer(&Dir{}) var _ = fs.NodeFsyncer(&Dir{}) var _ = fs.NodeRequestLookuper(&Dir{}) var _ = fs.HandleReadDirAller(&Dir{}) var _ = fs.NodeRemover(&Dir{}) var _ = fs.NodeRenamer(&Dir{}) var _ = fs.NodeSetattrer(&Dir{}) var _ = fs.NodeGetxattrer(&Dir{}) var _ = fs.NodeSetxattrer(&Dir{}) var _ = fs.NodeRemovexattrer(&Dir{}) var _ = fs.NodeListxattrer(&Dir{}) var _ = fs.NodeForgetter(&Dir{})
func (dir *Dir) Attr(ctx context.Context, attr *fuse.Attr) error {
// https://github.com/bazil/fuse/issues/196
attr.Valid = time.Second
if dir.FullPath() == dir.wfs.option.FilerMountRootPath { dir.setRootDirAttributes(attr) glog.V(3).Infof("root dir Attr %s, attr: %+v", dir.FullPath(), attr) return nil }
if err := dir.maybeLoadEntry(); err != nil { glog.V(3).Infof("dir Attr %s,err: %+v", dir.FullPath(), err) return err }
// attr.Inode = util.FullPath(dir.FullPath()).AsInode()
attr.Mode = os.FileMode(dir.entry.Attributes.FileMode) | os.ModeDir attr.Mtime = time.Unix(dir.entry.Attributes.Mtime, 0) attr.Crtime = time.Unix(dir.entry.Attributes.Crtime, 0) attr.Gid = dir.entry.Attributes.Gid attr.Uid = dir.entry.Attributes.Uid
glog.V(4).Infof("dir Attr %s, attr: %+v", dir.FullPath(), attr)
return nil }
func (dir *Dir) Getxattr(ctx context.Context, req *fuse.GetxattrRequest, resp *fuse.GetxattrResponse) error {
glog.V(4).Infof("dir Getxattr %s", dir.FullPath())
if err := dir.maybeLoadEntry(); err != nil { return err }
return getxattr(dir.entry, req, resp) }
func (dir *Dir) setRootDirAttributes(attr *fuse.Attr) { // attr.Inode = 1 // filer2.FullPath(dir.Path).AsInode()
attr.Valid = time.Second attr.Uid = dir.wfs.option.MountUid attr.Gid = dir.wfs.option.MountGid attr.Mode = dir.wfs.option.MountMode attr.Crtime = dir.wfs.option.MountCtime attr.Ctime = dir.wfs.option.MountCtime attr.Mtime = dir.wfs.option.MountMtime attr.Atime = dir.wfs.option.MountMtime attr.BlockSize = blockSize }
func (dir *Dir) Fsync(ctx context.Context, req *fuse.FsyncRequest) error { // fsync works at OS level
// write the file chunks to the filerGrpcAddress
glog.V(3).Infof("dir %s fsync %+v", dir.FullPath(), req)
return nil }
func (dir *Dir) newFile(name string, entry *filer_pb.Entry) fs.Node { f := dir.wfs.fsNodeCache.EnsureFsNode(util.NewFullPath(dir.FullPath(), name), func() fs.Node { return &File{ Name: name, dir: dir, wfs: dir.wfs, entry: entry, entryViewCache: nil, } }) f.(*File).dir = dir // in case dir node was created later
return f }
func (dir *Dir) newDirectory(fullpath util.FullPath, entry *filer_pb.Entry) fs.Node {
d := dir.wfs.fsNodeCache.EnsureFsNode(fullpath, func() fs.Node { return &Dir{name: entry.Name, wfs: dir.wfs, entry: entry, parent: dir} }) d.(*Dir).parent = dir // in case dir node was created later
return d }
func (dir *Dir) Create(ctx context.Context, req *fuse.CreateRequest, resp *fuse.CreateResponse) (fs.Node, fs.Handle, error) {
request, err := dir.doCreateEntry(req.Name, req.Mode, req.Uid, req.Gid, req.Flags&fuse.OpenExclusive != 0)
if err != nil { return nil, nil, err } var node fs.Node if request.Entry.IsDirectory { node = dir.newDirectory(util.NewFullPath(dir.FullPath(), req.Name), request.Entry) return node, nil, nil }
node = dir.newFile(req.Name, request.Entry) file := node.(*File) fh := dir.wfs.AcquireHandle(file, req.Uid, req.Gid) return file, fh, nil
}
func (dir *Dir) Mknod(ctx context.Context, req *fuse.MknodRequest) (fs.Node, error) {
request, err := dir.doCreateEntry(req.Name, req.Mode, req.Uid, req.Gid, false)
if err != nil { return nil, err } var node fs.Node node = dir.newFile(req.Name, request.Entry) return node, nil }
func (dir *Dir) doCreateEntry(name string, mode os.FileMode, uid, gid uint32, exlusive bool) (*filer_pb.CreateEntryRequest, error) { request := &filer_pb.CreateEntryRequest{ Directory: dir.FullPath(), Entry: &filer_pb.Entry{ Name: name, IsDirectory: mode&os.ModeDir > 0, Attributes: &filer_pb.FuseAttributes{ Mtime: time.Now().Unix(), Crtime: time.Now().Unix(), FileMode: uint32(mode &^ dir.wfs.option.Umask), Uid: uid, Gid: gid, Collection: dir.wfs.option.Collection, Replication: dir.wfs.option.Replication, TtlSec: dir.wfs.option.TtlSec, }, }, OExcl: exlusive, Signatures: []int32{dir.wfs.signature}, } glog.V(1).Infof("create %s/%s", dir.FullPath(), name)
err := dir.wfs.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error {
dir.wfs.mapPbIdFromLocalToFiler(request.Entry) defer dir.wfs.mapPbIdFromFilerToLocal(request.Entry)
if err := filer_pb.CreateEntry(client, request); err != nil { if strings.Contains(err.Error(), "EEXIST") { return fuse.EEXIST } glog.V(0).Infof("create %s/%s: %v", dir.FullPath(), name, err) return fuse.EIO }
dir.wfs.metaCache.InsertEntry(context.Background(), filer.FromPbEntry(request.Directory, request.Entry))
return nil }) return request, err }
func (dir *Dir) Mkdir(ctx context.Context, req *fuse.MkdirRequest) (fs.Node, error) {
glog.V(4).Infof("mkdir %s: %s", dir.FullPath(), req.Name)
newEntry := &filer_pb.Entry{ Name: req.Name, IsDirectory: true, Attributes: &filer_pb.FuseAttributes{ Mtime: time.Now().Unix(), Crtime: time.Now().Unix(), FileMode: uint32(req.Mode &^ dir.wfs.option.Umask), Uid: req.Uid, Gid: req.Gid, }, }
err := dir.wfs.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error {
dir.wfs.mapPbIdFromLocalToFiler(newEntry) defer dir.wfs.mapPbIdFromFilerToLocal(newEntry)
request := &filer_pb.CreateEntryRequest{ Directory: dir.FullPath(), Entry: newEntry, Signatures: []int32{dir.wfs.signature}, }
glog.V(1).Infof("mkdir: %v", request) if err := filer_pb.CreateEntry(client, request); err != nil { glog.V(0).Infof("mkdir %s/%s: %v", dir.FullPath(), req.Name, err) return err }
dir.wfs.metaCache.InsertEntry(context.Background(), filer.FromPbEntry(request.Directory, request.Entry))
return nil })
if err == nil { node := dir.newDirectory(util.NewFullPath(dir.FullPath(), req.Name), newEntry)
return node, nil }
glog.V(0).Infof("mkdir %s/%s: %v", dir.FullPath(), req.Name, err)
return nil, fuse.EIO }
func (dir *Dir) Lookup(ctx context.Context, req *fuse.LookupRequest, resp *fuse.LookupResponse) (node fs.Node, err error) {
dirPath := util.FullPath(dir.FullPath()) glog.V(4).Infof("dir Lookup %s: %s by %s", dirPath, req.Name, req.Header.String())
fullFilePath := dirPath.Child(req.Name) visitErr := meta_cache.EnsureVisited(dir.wfs.metaCache, dir.wfs, dirPath) if visitErr != nil { glog.Errorf("dir Lookup %s: %v", dirPath, visitErr) return nil, fuse.EIO } cachedEntry, cacheErr := dir.wfs.metaCache.FindEntry(context.Background(), fullFilePath) if cacheErr == filer_pb.ErrNotFound { return nil, fuse.ENOENT } entry := cachedEntry.ToProtoEntry()
if entry == nil { // glog.V(3).Infof("dir Lookup cache miss %s", fullFilePath)
entry, err = filer_pb.GetEntry(dir.wfs, fullFilePath) if err != nil { glog.V(1).Infof("dir GetEntry %s: %v", fullFilePath, err) return nil, fuse.ENOENT } } else { glog.V(4).Infof("dir Lookup cache hit %s", fullFilePath) }
if entry != nil { if entry.IsDirectory { node = dir.newDirectory(fullFilePath, entry) } else { node = dir.newFile(req.Name, entry) }
// resp.EntryValid = time.Second
// resp.Attr.Inode = fullFilePath.AsInode()
resp.Attr.Valid = time.Second resp.Attr.Mtime = time.Unix(entry.Attributes.Mtime, 0) resp.Attr.Crtime = time.Unix(entry.Attributes.Crtime, 0) resp.Attr.Mode = os.FileMode(entry.Attributes.FileMode) resp.Attr.Gid = entry.Attributes.Gid resp.Attr.Uid = entry.Attributes.Uid if entry.HardLinkCounter > 0 { resp.Attr.Nlink = uint32(entry.HardLinkCounter) }
return node, nil }
glog.V(4).Infof("not found dir GetEntry %s: %v", fullFilePath, err) return nil, fuse.ENOENT }
func (dir *Dir) ReadDirAll(ctx context.Context) (ret []fuse.Dirent, err error) {
dirPath := util.FullPath(dir.FullPath()) glog.V(4).Infof("dir ReadDirAll %s", dirPath)
processEachEntryFn := func(entry *filer_pb.Entry, isLast bool) error { if entry.IsDirectory { dirent := fuse.Dirent{Name: entry.Name, Type: fuse.DT_Dir} ret = append(ret, dirent) } else { dirent := fuse.Dirent{Name: entry.Name, Type: findFileType(uint16(entry.Attributes.FileMode))} ret = append(ret, dirent) } return nil }
if err = meta_cache.EnsureVisited(dir.wfs.metaCache, dir.wfs, dirPath); err != nil { glog.Errorf("dir ReadDirAll %s: %v", dirPath, err) return nil, fuse.EIO } listErr := dir.wfs.metaCache.ListDirectoryEntries(context.Background(), dirPath, "", false, int64(math.MaxInt32), func(entry *filer.Entry) bool { processEachEntryFn(entry.ToProtoEntry(), false) return true }) if listErr != nil { glog.Errorf("list meta cache: %v", listErr) return nil, fuse.EIO } return }
func findFileType(mode uint16) fuse.DirentType { switch mode & (syscall.S_IFMT & 0xffff) { case syscall.S_IFSOCK: return fuse.DT_Socket case syscall.S_IFLNK: return fuse.DT_Link case syscall.S_IFREG: return fuse.DT_File case syscall.S_IFBLK: return fuse.DT_Block case syscall.S_IFDIR: return fuse.DT_Dir case syscall.S_IFCHR: return fuse.DT_Char case syscall.S_IFIFO: return fuse.DT_FIFO } return fuse.DT_File }
func (dir *Dir) Remove(ctx context.Context, req *fuse.RemoveRequest) error {
if !req.Dir { return dir.removeOneFile(req) }
return dir.removeFolder(req)
}
func (dir *Dir) removeOneFile(req *fuse.RemoveRequest) error {
filePath := util.NewFullPath(dir.FullPath(), req.Name) entry, err := filer_pb.GetEntry(dir.wfs, filePath) if err != nil { return err } if entry == nil { return nil }
// first, ensure the filer store can correctly delete
glog.V(3).Infof("remove file: %v", req) isDeleteData := entry.HardLinkCounter <= 1 err = filer_pb.Remove(dir.wfs, dir.FullPath(), req.Name, isDeleteData, false, false, false, []int32{dir.wfs.signature}) if err != nil { glog.V(3).Infof("not found remove file %s/%s: %v", dir.FullPath(), req.Name, err) return fuse.ENOENT }
// then, delete meta cache and fsNode cache
dir.wfs.metaCache.DeleteEntry(context.Background(), filePath)
// clear entry inside the file
fsNode := dir.wfs.fsNodeCache.GetFsNode(filePath) dir.wfs.fsNodeCache.DeleteFsNode(filePath) if fsNode != nil { if file, ok := fsNode.(*File); ok { file.clearEntry() } }
// remove current file handle if any
dir.wfs.handlesLock.Lock() defer dir.wfs.handlesLock.Unlock() inodeId := util.NewFullPath(dir.FullPath(), req.Name).AsInode() delete(dir.wfs.handles, inodeId)
return nil
}
func (dir *Dir) removeFolder(req *fuse.RemoveRequest) error {
glog.V(3).Infof("remove directory entry: %v", req) ignoreRecursiveErr := true // ignore recursion error since the OS should manage it
err := filer_pb.Remove(dir.wfs, dir.FullPath(), req.Name, true, false, ignoreRecursiveErr, false, []int32{dir.wfs.signature}) if err != nil { glog.V(0).Infof("remove %s/%s: %v", dir.FullPath(), req.Name, err) if strings.Contains(err.Error(), "non-empty") { return fuse.EEXIST } return fuse.ENOENT }
t := util.NewFullPath(dir.FullPath(), req.Name) dir.wfs.metaCache.DeleteEntry(context.Background(), t) dir.wfs.fsNodeCache.DeleteFsNode(t)
return nil
}
func (dir *Dir) Setattr(ctx context.Context, req *fuse.SetattrRequest, resp *fuse.SetattrResponse) error {
glog.V(4).Infof("%v dir setattr %+v", dir.FullPath(), req)
if err := dir.maybeLoadEntry(); err != nil { return err }
if req.Valid.Mode() { dir.entry.Attributes.FileMode = uint32(req.Mode) }
if req.Valid.Uid() { dir.entry.Attributes.Uid = req.Uid }
if req.Valid.Gid() { dir.entry.Attributes.Gid = req.Gid }
if req.Valid.Mtime() { dir.entry.Attributes.Mtime = req.Mtime.Unix() }
return dir.saveEntry()
}
func (dir *Dir) Setxattr(ctx context.Context, req *fuse.SetxattrRequest) error {
glog.V(4).Infof("dir Setxattr %s: %s", dir.FullPath(), req.Name)
if err := dir.maybeLoadEntry(); err != nil { return err }
if err := setxattr(dir.entry, req); err != nil { return err }
return dir.saveEntry()
}
func (dir *Dir) Removexattr(ctx context.Context, req *fuse.RemovexattrRequest) error {
glog.V(4).Infof("dir Removexattr %s: %s", dir.FullPath(), req.Name)
if err := dir.maybeLoadEntry(); err != nil { return err }
if err := removexattr(dir.entry, req); err != nil { return err }
return dir.saveEntry()
}
func (dir *Dir) Listxattr(ctx context.Context, req *fuse.ListxattrRequest, resp *fuse.ListxattrResponse) error {
glog.V(4).Infof("dir Listxattr %s", dir.FullPath())
if err := dir.maybeLoadEntry(); err != nil { return err }
if err := listxattr(dir.entry, req, resp); err != nil { return err }
return nil
}
func (dir *Dir) Forget() { glog.V(4).Infof("Forget dir %s", dir.FullPath())
dir.wfs.fsNodeCache.DeleteFsNode(util.FullPath(dir.FullPath())) }
func (dir *Dir) maybeLoadEntry() error { if dir.entry == nil { parentDirPath, name := util.FullPath(dir.FullPath()).DirAndName() entry, err := dir.wfs.maybeLoadEntry(parentDirPath, name) if err != nil { return err } dir.entry = entry } return nil }
func (dir *Dir) saveEntry() error {
parentDir, name := util.FullPath(dir.FullPath()).DirAndName()
return dir.wfs.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error {
dir.wfs.mapPbIdFromLocalToFiler(dir.entry) defer dir.wfs.mapPbIdFromFilerToLocal(dir.entry)
request := &filer_pb.UpdateEntryRequest{ Directory: parentDir, Entry: dir.entry, Signatures: []int32{dir.wfs.signature}, }
glog.V(1).Infof("save dir entry: %v", request) _, err := client.UpdateEntry(context.Background(), request) if err != nil { glog.Errorf("UpdateEntry dir %s/%s: %v", parentDir, name, err) return fuse.EIO }
dir.wfs.metaCache.UpdateEntry(context.Background(), filer.FromPbEntry(request.Directory, request.Entry))
return nil }) }
func (dir *Dir) FullPath() string { var parts []string for p := dir; p != nil; p = p.parent { if strings.HasPrefix(p.name, "/") { if len(p.name) > 1 { parts = append(parts, p.name[1:]) } } else { parts = append(parts, p.name) } }
if len(parts) == 0 { return "/" }
var buf bytes.Buffer for i := len(parts) - 1; i >= 0; i-- { buf.WriteString("/") buf.WriteString(parts[i]) } return buf.String() }
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