mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-12-06 04:29:02 +08:00
609 lines
16 KiB
Go
609 lines
16 KiB
Go
package filesys
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import (
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"bytes"
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"context"
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"math"
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"os"
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"strings"
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"syscall"
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"time"
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"github.com/seaweedfs/fuse"
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"github.com/seaweedfs/fuse/fs"
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"github.com/chrislusf/seaweedfs/weed/filer"
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"github.com/chrislusf/seaweedfs/weed/filesys/meta_cache"
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"github.com/chrislusf/seaweedfs/weed/glog"
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"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
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"github.com/chrislusf/seaweedfs/weed/util"
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)
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type Dir struct {
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name string
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wfs *WFS
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entry *filer_pb.Entry
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parent *Dir
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id uint64
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}
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var _ = fs.Node(&Dir{})
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var _ = fs.NodeIdentifier(&Dir{})
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var _ = fs.NodeCreater(&Dir{})
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var _ = fs.NodeMknoder(&Dir{})
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var _ = fs.NodeMkdirer(&Dir{})
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var _ = fs.NodeFsyncer(&Dir{})
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var _ = fs.NodeRequestLookuper(&Dir{})
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var _ = fs.HandleReadDirAller(&Dir{})
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var _ = fs.NodeRemover(&Dir{})
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var _ = fs.NodeRenamer(&Dir{})
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var _ = fs.NodeSetattrer(&Dir{})
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var _ = fs.NodeGetxattrer(&Dir{})
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var _ = fs.NodeSetxattrer(&Dir{})
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var _ = fs.NodeRemovexattrer(&Dir{})
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var _ = fs.NodeListxattrer(&Dir{})
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var _ = fs.NodeForgetter(&Dir{})
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func (dir *Dir) Id() uint64 {
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if dir.parent == nil {
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return 1
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}
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return dir.id
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}
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func (dir *Dir) Attr(ctx context.Context, attr *fuse.Attr) error {
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// https://github.com/bazil/fuse/issues/196
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attr.Valid = time.Second
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if dir.FullPath() == dir.wfs.option.FilerMountRootPath {
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dir.setRootDirAttributes(attr)
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glog.V(3).Infof("root dir Attr %s, attr: %+v", dir.FullPath(), attr)
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return nil
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}
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entry, err := dir.maybeLoadEntry()
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if err != nil {
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glog.V(3).Infof("dir Attr %s,err: %+v", dir.FullPath(), err)
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return err
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}
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attr.Inode = dir.Id()
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attr.Mode = os.FileMode(entry.Attributes.FileMode) | os.ModeDir
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attr.Mtime = time.Unix(entry.Attributes.Mtime, 0)
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attr.Crtime = time.Unix(entry.Attributes.Crtime, 0)
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attr.Gid = entry.Attributes.Gid
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attr.Uid = entry.Attributes.Uid
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glog.V(4).Infof("dir Attr %s, attr: %+v", dir.FullPath(), attr)
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return nil
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}
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func (dir *Dir) Getxattr(ctx context.Context, req *fuse.GetxattrRequest, resp *fuse.GetxattrResponse) error {
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glog.V(4).Infof("dir Getxattr %s", dir.FullPath())
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entry, err := dir.maybeLoadEntry()
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if err != nil {
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return err
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}
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return getxattr(entry, req, resp)
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}
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func (dir *Dir) setRootDirAttributes(attr *fuse.Attr) {
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// attr.Inode = 1 // filer2.FullPath(dir.Path).AsInode()
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attr.Valid = time.Second
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attr.Inode = dir.Id()
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attr.Uid = dir.wfs.option.MountUid
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attr.Gid = dir.wfs.option.MountGid
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attr.Mode = dir.wfs.option.MountMode
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attr.Crtime = dir.wfs.option.MountCtime
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attr.Ctime = dir.wfs.option.MountCtime
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attr.Mtime = dir.wfs.option.MountMtime
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attr.Atime = dir.wfs.option.MountMtime
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attr.BlockSize = blockSize
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}
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func (dir *Dir) Fsync(ctx context.Context, req *fuse.FsyncRequest) error {
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// fsync works at OS level
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// write the file chunks to the filerGrpcAddress
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glog.V(3).Infof("dir %s fsync %+v", dir.FullPath(), req)
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return nil
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}
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func (dir *Dir) newFile(name string) fs.Node {
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fileFullPath := util.NewFullPath(dir.FullPath(), name)
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fileId := fileFullPath.AsInode()
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dir.wfs.handlesLock.Lock()
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existingHandle, found := dir.wfs.handles[fileId]
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dir.wfs.handlesLock.Unlock()
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if found {
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glog.V(4).Infof("newFile found opened file handle: %+v", fileFullPath)
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return existingHandle.f
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}
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return &File{
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Name: name,
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dir: dir,
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wfs: dir.wfs,
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id: fileId,
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}
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}
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func (dir *Dir) newDirectory(fullpath util.FullPath) fs.Node {
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return &Dir{name: fullpath.Name(), wfs: dir.wfs, parent: dir, id: fullpath.AsInode()}
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}
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func (dir *Dir) Create(ctx context.Context, req *fuse.CreateRequest,
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resp *fuse.CreateResponse) (fs.Node, fs.Handle, error) {
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exclusive := req.Flags&fuse.OpenExclusive != 0
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isDirectory := req.Mode&os.ModeDir > 0
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if exclusive || isDirectory {
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_, err := dir.doCreateEntry(req.Name, req.Mode, req.Uid, req.Gid, exclusive)
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if err != nil {
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return nil, nil, err
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}
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}
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var node fs.Node
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if isDirectory {
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node = dir.newDirectory(util.NewFullPath(dir.FullPath(), req.Name))
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return node, nil, nil
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}
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node = dir.newFile(req.Name)
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file := node.(*File)
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file.entry = &filer_pb.Entry{
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Name: req.Name,
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IsDirectory: req.Mode&os.ModeDir > 0,
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Attributes: &filer_pb.FuseAttributes{
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Mtime: time.Now().Unix(),
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Crtime: time.Now().Unix(),
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FileMode: uint32(req.Mode &^ dir.wfs.option.Umask),
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Uid: req.Uid,
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Gid: req.Gid,
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Collection: dir.wfs.option.Collection,
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Replication: dir.wfs.option.Replication,
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TtlSec: dir.wfs.option.TtlSec,
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},
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}
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file.dirtyMetadata = true
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fh := dir.wfs.AcquireHandle(file, req.Uid, req.Gid, req.Flags&fuse.OpenWriteOnly > 0)
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return file, fh, nil
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}
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func (dir *Dir) Mknod(ctx context.Context, req *fuse.MknodRequest) (fs.Node, error) {
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_, err := dir.doCreateEntry(req.Name, req.Mode, req.Uid, req.Gid, false)
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if err != nil {
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return nil, err
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}
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var node fs.Node
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node = dir.newFile(req.Name)
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return node, nil
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}
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func (dir *Dir) doCreateEntry(name string, mode os.FileMode, uid, gid uint32, exclusive bool) (*filer_pb.CreateEntryRequest, error) {
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dirFullPath := dir.FullPath()
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request := &filer_pb.CreateEntryRequest{
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Directory: dirFullPath,
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Entry: &filer_pb.Entry{
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Name: name,
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IsDirectory: mode&os.ModeDir > 0,
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Attributes: &filer_pb.FuseAttributes{
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Mtime: time.Now().Unix(),
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Crtime: time.Now().Unix(),
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FileMode: uint32(mode &^ dir.wfs.option.Umask),
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Uid: uid,
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Gid: gid,
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Collection: dir.wfs.option.Collection,
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Replication: dir.wfs.option.Replication,
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TtlSec: dir.wfs.option.TtlSec,
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},
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},
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OExcl: exclusive,
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Signatures: []int32{dir.wfs.signature},
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}
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glog.V(1).Infof("create %s/%s", dirFullPath, name)
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err := dir.wfs.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error {
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dir.wfs.mapPbIdFromLocalToFiler(request.Entry)
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defer dir.wfs.mapPbIdFromFilerToLocal(request.Entry)
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if err := filer_pb.CreateEntry(client, request); err != nil {
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if strings.Contains(err.Error(), "EEXIST") {
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return fuse.EEXIST
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}
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glog.V(0).Infof("create %s/%s: %v", dirFullPath, name, err)
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return fuse.EIO
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}
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if err := dir.wfs.metaCache.InsertEntry(context.Background(), filer.FromPbEntry(request.Directory, request.Entry)); err != nil {
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glog.Errorf("local InsertEntry dir %s/%s: %v", dirFullPath, name, err)
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return fuse.EIO
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}
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return nil
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})
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return request, err
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}
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func (dir *Dir) Mkdir(ctx context.Context, req *fuse.MkdirRequest) (fs.Node, error) {
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glog.V(4).Infof("mkdir %s: %s", dir.FullPath(), req.Name)
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newEntry := &filer_pb.Entry{
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Name: req.Name,
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IsDirectory: true,
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Attributes: &filer_pb.FuseAttributes{
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Mtime: time.Now().Unix(),
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Crtime: time.Now().Unix(),
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FileMode: uint32(req.Mode &^ dir.wfs.option.Umask),
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Uid: req.Uid,
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Gid: req.Gid,
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},
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}
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dirFullPath := dir.FullPath()
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err := dir.wfs.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error {
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dir.wfs.mapPbIdFromLocalToFiler(newEntry)
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defer dir.wfs.mapPbIdFromFilerToLocal(newEntry)
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request := &filer_pb.CreateEntryRequest{
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Directory: dirFullPath,
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Entry: newEntry,
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Signatures: []int32{dir.wfs.signature},
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}
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glog.V(1).Infof("mkdir: %v", request)
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if err := filer_pb.CreateEntry(client, request); err != nil {
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glog.V(0).Infof("mkdir %s/%s: %v", dirFullPath, req.Name, err)
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return err
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}
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if err := dir.wfs.metaCache.InsertEntry(context.Background(), filer.FromPbEntry(request.Directory, request.Entry)); err != nil {
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glog.Errorf("local mkdir dir %s/%s: %v", dirFullPath, req.Name, err)
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return fuse.EIO
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}
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return nil
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})
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if err == nil {
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node := dir.newDirectory(util.NewFullPath(dirFullPath, req.Name))
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return node, nil
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}
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glog.V(0).Infof("mkdir %s/%s: %v", dirFullPath, req.Name, err)
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return nil, fuse.EIO
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}
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func (dir *Dir) Lookup(ctx context.Context, req *fuse.LookupRequest, resp *fuse.LookupResponse) (node fs.Node, err error) {
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dirPath := util.FullPath(dir.FullPath())
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glog.V(4).Infof("dir Lookup %s: %s by %s", dirPath, req.Name, req.Header.String())
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fullFilePath := dirPath.Child(req.Name)
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visitErr := meta_cache.EnsureVisited(dir.wfs.metaCache, dir.wfs, dirPath)
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if visitErr != nil {
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glog.Errorf("dir Lookup %s: %v", dirPath, visitErr)
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return nil, fuse.EIO
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}
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localEntry, cacheErr := dir.wfs.metaCache.FindEntry(context.Background(), fullFilePath)
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if cacheErr == filer_pb.ErrNotFound {
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return nil, fuse.ENOENT
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}
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if localEntry == nil {
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// glog.V(3).Infof("dir Lookup cache miss %s", fullFilePath)
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entry, err := filer_pb.GetEntry(dir.wfs, fullFilePath)
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if err != nil {
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glog.V(1).Infof("dir GetEntry %s: %v", fullFilePath, err)
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return nil, fuse.ENOENT
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}
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localEntry = filer.FromPbEntry(string(dirPath), entry)
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} else {
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glog.V(4).Infof("dir Lookup cache hit %s", fullFilePath)
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}
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if localEntry != nil {
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if localEntry.IsDirectory() {
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node = dir.newDirectory(fullFilePath)
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} else {
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node = dir.newFile(req.Name)
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}
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// resp.EntryValid = time.Second
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resp.Attr.Inode = fullFilePath.AsInode()
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resp.Attr.Valid = time.Second
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resp.Attr.Size = localEntry.FileSize
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resp.Attr.Mtime = localEntry.Attr.Mtime
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resp.Attr.Crtime = localEntry.Attr.Crtime
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resp.Attr.Mode = localEntry.Attr.Mode
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resp.Attr.Gid = localEntry.Attr.Gid
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resp.Attr.Uid = localEntry.Attr.Uid
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if localEntry.HardLinkCounter > 0 {
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resp.Attr.Nlink = uint32(localEntry.HardLinkCounter)
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}
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return node, nil
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}
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glog.V(4).Infof("not found dir GetEntry %s: %v", fullFilePath, err)
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return nil, fuse.ENOENT
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}
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func (dir *Dir) ReadDirAll(ctx context.Context) (ret []fuse.Dirent, err error) {
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dirPath := util.FullPath(dir.FullPath())
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glog.V(4).Infof("dir ReadDirAll %s", dirPath)
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processEachEntryFn := func(entry *filer.Entry, isLast bool) {
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if entry.IsDirectory() {
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dirent := fuse.Dirent{Name: entry.Name(), Type: fuse.DT_Dir, Inode: dirPath.Child(entry.Name()).AsInode()}
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ret = append(ret, dirent)
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} else {
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dirent := fuse.Dirent{Name: entry.Name(), Type: findFileType(uint16(entry.Attr.Mode)), Inode: dirPath.Child(entry.Name()).AsInode()}
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ret = append(ret, dirent)
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}
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}
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if err = meta_cache.EnsureVisited(dir.wfs.metaCache, dir.wfs, dirPath); err != nil {
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glog.Errorf("dir ReadDirAll %s: %v", dirPath, err)
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return nil, fuse.EIO
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}
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listErr := dir.wfs.metaCache.ListDirectoryEntries(context.Background(), dirPath, "", false, int64(math.MaxInt32), func(entry *filer.Entry) bool {
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processEachEntryFn(entry, false)
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return true
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})
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if listErr != nil {
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glog.Errorf("list meta cache: %v", listErr)
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return nil, fuse.EIO
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}
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return
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}
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func findFileType(mode uint16) fuse.DirentType {
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switch mode & (syscall.S_IFMT & 0xffff) {
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case syscall.S_IFSOCK:
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return fuse.DT_Socket
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case syscall.S_IFLNK:
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return fuse.DT_Link
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case syscall.S_IFREG:
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return fuse.DT_File
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case syscall.S_IFBLK:
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return fuse.DT_Block
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case syscall.S_IFDIR:
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return fuse.DT_Dir
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case syscall.S_IFCHR:
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return fuse.DT_Char
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case syscall.S_IFIFO:
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return fuse.DT_FIFO
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}
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return fuse.DT_File
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}
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func (dir *Dir) Remove(ctx context.Context, req *fuse.RemoveRequest) error {
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if !req.Dir {
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return dir.removeOneFile(req)
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}
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return dir.removeFolder(req)
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}
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func (dir *Dir) removeOneFile(req *fuse.RemoveRequest) error {
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dirFullPath := dir.FullPath()
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filePath := util.NewFullPath(dirFullPath, req.Name)
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entry, err := filer_pb.GetEntry(dir.wfs, filePath)
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if err != nil {
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return err
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}
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// first, ensure the filer store can correctly delete
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glog.V(3).Infof("remove file: %v", req)
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isDeleteData := entry != nil && entry.HardLinkCounter <= 1
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err = filer_pb.Remove(dir.wfs, dirFullPath, req.Name, isDeleteData, false, false, false, []int32{dir.wfs.signature})
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if err != nil {
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glog.V(3).Infof("not found remove file %s: %v", filePath, err)
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return fuse.ENOENT
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}
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// then, delete meta cache and fsNode cache
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if err = dir.wfs.metaCache.DeleteEntry(context.Background(), filePath); err != nil {
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glog.V(3).Infof("local DeleteEntry %s: %v", filePath, err)
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return fuse.ESTALE
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}
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// remove current file handle if any
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dir.wfs.handlesLock.Lock()
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defer dir.wfs.handlesLock.Unlock()
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inodeId := filePath.AsInode()
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delete(dir.wfs.handles, inodeId)
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return nil
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}
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func (dir *Dir) removeFolder(req *fuse.RemoveRequest) error {
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dirFullPath := dir.FullPath()
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glog.V(3).Infof("remove directory entry: %v", req)
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ignoreRecursiveErr := true // ignore recursion error since the OS should manage it
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err := filer_pb.Remove(dir.wfs, dirFullPath, req.Name, true, true, ignoreRecursiveErr, false, []int32{dir.wfs.signature})
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if err != nil {
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glog.V(0).Infof("remove %s/%s: %v", dirFullPath, req.Name, err)
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if strings.Contains(err.Error(), "non-empty") {
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return fuse.EEXIST
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}
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return fuse.ENOENT
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}
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t := util.NewFullPath(dirFullPath, req.Name)
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dir.wfs.metaCache.DeleteEntry(context.Background(), t)
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return nil
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}
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func (dir *Dir) Setattr(ctx context.Context, req *fuse.SetattrRequest, resp *fuse.SetattrResponse) error {
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glog.V(4).Infof("%v dir setattr %+v", dir.FullPath(), req)
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entry, err := dir.maybeLoadEntry()
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if err != nil {
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return err
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}
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if req.Valid.Mode() {
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entry.Attributes.FileMode = uint32(req.Mode)
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}
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if req.Valid.Uid() {
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entry.Attributes.Uid = req.Uid
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}
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if req.Valid.Gid() {
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entry.Attributes.Gid = req.Gid
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}
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if req.Valid.Mtime() {
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entry.Attributes.Mtime = req.Mtime.Unix()
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}
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return dir.saveEntry(entry)
|
|
|
|
}
|
|
|
|
func (dir *Dir) Setxattr(ctx context.Context, req *fuse.SetxattrRequest) error {
|
|
|
|
glog.V(4).Infof("dir Setxattr %s: %s", dir.FullPath(), req.Name)
|
|
|
|
entry, err := dir.maybeLoadEntry()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if err := setxattr(entry, req); err != nil {
|
|
return err
|
|
}
|
|
|
|
return dir.saveEntry(entry)
|
|
|
|
}
|
|
|
|
func (dir *Dir) Removexattr(ctx context.Context, req *fuse.RemovexattrRequest) error {
|
|
|
|
glog.V(4).Infof("dir Removexattr %s: %s", dir.FullPath(), req.Name)
|
|
|
|
entry, err := dir.maybeLoadEntry()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if err := removexattr(entry, req); err != nil {
|
|
return err
|
|
}
|
|
|
|
return dir.saveEntry(entry)
|
|
|
|
}
|
|
|
|
func (dir *Dir) Listxattr(ctx context.Context, req *fuse.ListxattrRequest, resp *fuse.ListxattrResponse) error {
|
|
|
|
glog.V(4).Infof("dir Listxattr %s", dir.FullPath())
|
|
|
|
entry, err := dir.maybeLoadEntry()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if err := listxattr(entry, req, resp); err != nil {
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
func (dir *Dir) Forget() {
|
|
glog.V(4).Infof("Forget dir %s", dir.FullPath())
|
|
}
|
|
|
|
func (dir *Dir) maybeLoadEntry() (*filer_pb.Entry, error) {
|
|
parentDirPath, name := util.FullPath(dir.FullPath()).DirAndName()
|
|
return dir.wfs.maybeLoadEntry(parentDirPath, name)
|
|
}
|
|
|
|
func (dir *Dir) saveEntry(entry *filer_pb.Entry) error {
|
|
|
|
parentDir, name := util.FullPath(dir.FullPath()).DirAndName()
|
|
|
|
return dir.wfs.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error {
|
|
|
|
dir.wfs.mapPbIdFromLocalToFiler(entry)
|
|
defer dir.wfs.mapPbIdFromFilerToLocal(entry)
|
|
|
|
request := &filer_pb.UpdateEntryRequest{
|
|
Directory: parentDir,
|
|
Entry: 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
|
|
}
|
|
|
|
if err := dir.wfs.metaCache.UpdateEntry(context.Background(), filer.FromPbEntry(request.Directory, request.Entry)); err != nil {
|
|
glog.Errorf("UpdateEntry dir %s/%s: %v", parentDir, name, err)
|
|
return fuse.ESTALE
|
|
}
|
|
|
|
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()
|
|
}
|