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delay new file creation unless file is opened exclusively

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This commit is contained in:
Chris Lu 2021-04-19 10:58:25 -07:00
parent 1faafce832
commit 83cf94ad2d
2 changed files with 25 additions and 4 deletions
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28
weed/filesys/dir.go
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@ -28,6 +28,7 @@ type Dir struct {
}
var _ = fs.Node(&Dir{})
//var _ = fs.NodeIdentifier(&Dir{})
var _ = fs.NodeCreater(&Dir{})
var _ = fs.NodeMknoder(&Dir{})
@ -140,19 +141,38 @@ func (dir *Dir) newDirectory(fullpath util.FullPath) fs.Node {
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)
exclusive := req.Flags&fuse.OpenExclusive != 0
isDirectory := req.Mode&os.ModeDir > 0
if err != nil {
return nil, nil, err
if exclusive || isDirectory {
_, err := dir.doCreateEntry(req.Name, req.Mode, req.Uid, req.Gid, exclusive)
if err != nil {
return nil, nil, err
}
}
var node fs.Node
if request.Entry.IsDirectory {
if isDirectory {
node = dir.newDirectory(util.NewFullPath(dir.FullPath(), req.Name))
return node, nil, nil
}
node = dir.newFile(req.Name)
file := node.(*File)
file.entry = &filer_pb.Entry{
Name: req.Name,
IsDirectory: req.Mode&os.ModeDir > 0,
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,
Collection: dir.wfs.option.Collection,
Replication: dir.wfs.option.Replication,
TtlSec: dir.wfs.option.TtlSec,
},
}
file.dirtyMetadata = true
fh := dir.wfs.AcquireHandle(file, req.Uid, req.Gid)
return file, fh, nil

1
weed/filesys/file.go
View file

@ -265,6 +265,7 @@ func (file *File) maybeLoadEntry(ctx context.Context) (entry *filer_pb.Entry, er
file.wfs.handlesLock.Lock()
handle, found := file.wfs.handles[file.Id()]
file.wfs.handlesLock.Unlock()
entry = file.entry
if found {
glog.V(4).Infof("maybeLoadEntry found opened file %s/%s: %v %v", file.dir.FullPath(), file.Name, handle.f.entry, entry)
entry = handle.f.entry