file set attribute

weed/mount/filehandle_map.go

@@ -30,6 +30,13 @@ func (i *FileHandleToInode) GetFileHandle(fh FileHandleId) *FileHandle {
 	return nil
 }
 
+func (i *FileHandleToInode) FindFileHandle(inode uint64) (fh *FileHandle, found bool) {
+	i.RLock()
+	defer i.RUnlock()
+	fh, found = i.inode2fh[inode]
+	return
+}
+
 func (i *FileHandleToInode) AcquireFileHandle(wfs *WFS, inode uint64, entry *filer_pb.Entry) *FileHandle {
 	i.Lock()
 	defer i.Unlock()

weed/mount/page_writer.go

@@ -30,7 +30,7 @@ func newPageWriter(fh *FileHandle, chunkSize int64) *PageWriter {
 
 func (pw *PageWriter) AddPage(offset int64, data []byte) {
 
-	glog.V(4).Infof("%v AddPage [%d, %d)", pw.fh, offset, offset+int64(len(data)))
+	glog.V(4).Infof("%v AddPage [%d, %d)", pw.fh.fh, offset, offset+int64(len(data)))
 
 	chunkIndex := offset / pw.chunkSize
 	for i := chunkIndex; len(data) > 0; i++ {
@@ -50,7 +50,7 @@ func (pw *PageWriter) FlushData() error {
 }
 
 func (pw *PageWriter) ReadDirtyDataAt(data []byte, offset int64) (maxStop int64) {
-	glog.V(4).Infof("ReadDirtyDataAt %v [%d, %d)", pw.fh, offset, offset+int64(len(data)))
+	glog.V(4).Infof("ReadDirtyDataAt %v [%d, %d)", pw.fh.fh, offset, offset+int64(len(data)))
 
 	chunkIndex := offset / pw.chunkSize
 	for i := chunkIndex; len(data) > 0; i++ {

weed/mount/weedfs.go

@@ -120,8 +120,12 @@ func (wfs *WFS) String() string {
 	return "seaweedfs"
 }
 
-func (wfs *WFS) maybeReadEntry(inode uint64) (path util.FullPath, entry *filer_pb.Entry, status fuse.Status) {
+func (wfs *WFS) maybeReadEntry(inode uint64) (path util.FullPath, fh *FileHandle, entry *filer_pb.Entry, status fuse.Status) {
 	path = wfs.inodeToPath.GetPath(inode)
+	var found bool
+	if fh, found = wfs.fhmap.FindFileHandle(inode); found {
+		return path, fh, fh.entry, fuse.OK
+	}
 	entry, status = wfs.maybeLoadEntry(path)
 	return
 }
@@ -146,7 +150,6 @@ func (wfs *WFS) maybeLoadEntry(fullpath util.FullPath) (*filer_pb.Entry, fuse.St
 		}, fuse.OK
 	}
 
-	// TODO Use inode to selectively filetering metadata updates
 	// read from async meta cache
 	meta_cache.EnsureVisited(wfs.metaCache, wfs, util.FullPath(dir))
 	cachedEntry, cacheErr := wfs.metaCache.FindEntry(context.Background(), fullpath)

weed/mount/weedfs_attr.go

@@ -2,6 +2,7 @@ package mount
 
 import (
 	"github.com/chrislusf/seaweedfs/weed/filer"
+	"github.com/chrislusf/seaweedfs/weed/glog"
 	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
 	"github.com/hanwen/go-fuse/v2/fuse"
 	"os"
@@ -15,7 +16,7 @@ func (wfs *WFS) GetAttr(cancel <-chan struct{}, input *fuse.GetAttrIn, out *fuse
 		return fuse.OK
 	}
 
-	_, entry, status := wfs.maybeReadEntry(input.NodeId)
+	_, _, entry, status := wfs.maybeReadEntry(input.NodeId)
 	if status != fuse.OK {
 		return status
 	}
@@ -27,13 +28,43 @@ func (wfs *WFS) GetAttr(cancel <-chan struct{}, input *fuse.GetAttrIn, out *fuse
 
 func (wfs *WFS) SetAttr(cancel <-chan struct{}, input *fuse.SetAttrIn, out *fuse.AttrOut) (code fuse.Status) {
 
-	// TODO this is only for directory. Filet setAttr involves open files and truncate to a size
-
-	path, entry, status := wfs.maybeReadEntry(input.NodeId)
+	path, fh, entry, status := wfs.maybeReadEntry(input.NodeId)
 	if status != fuse.OK {
 		return status
 	}
 
+	if size, ok := input.GetSize(); ok {
+		glog.V(4).Infof("%v setattr set size=%v chunks=%d", path, size, len(entry.Chunks))
+		if size < filer.FileSize(entry) {
+			// fmt.Printf("truncate %v \n", fullPath)
+			var chunks []*filer_pb.FileChunk
+			var truncatedChunks []*filer_pb.FileChunk
+			for _, chunk := range entry.Chunks {
+				int64Size := int64(chunk.Size)
+				if chunk.Offset+int64Size > int64(size) {
+					// this chunk is truncated
+					int64Size = int64(size) - chunk.Offset
+					if int64Size > 0 {
+						chunks = append(chunks, chunk)
+						glog.V(4).Infof("truncated chunk %+v from %d to %d\n", chunk.GetFileIdString(), chunk.Size, int64Size)
+						chunk.Size = uint64(int64Size)
+					} else {
+						glog.V(4).Infof("truncated whole chunk %+v\n", chunk.GetFileIdString())
+						truncatedChunks = append(truncatedChunks, chunk)
+					}
+				}
+			}
+			// set the new chunks and reset entry cache
+			entry.Chunks = chunks
+			if fh != nil {
+				fh.entryViewCache = nil
+			}
+		}
+		entry.Attributes.Mtime = time.Now().Unix()
+		entry.Attributes.FileSize = size
+
+	}
+
 	if mode, ok := input.GetMode(); ok {
 		entry.Attributes.FileMode = uint32(mode)
 	}
@@ -54,6 +85,11 @@ func (wfs *WFS) SetAttr(cancel <-chan struct{}, input *fuse.SetAttrIn, out *fuse
 	out.AttrValid = 1
 	wfs.setAttrByPbEntry(&out.Attr, input.NodeId, entry)
 
+	if fh != nil {
+		fh.dirtyMetadata = true
+		return fuse.OK
+	}
+
 	return wfs.saveEntry(path, entry)
 
 }

weed/mount/weedfs_dir_read.go

@@ -116,7 +116,6 @@ func (wfs *WFS) doReadDirectory(input *fuse.ReadIn, out *fuse.DirEntryList, isPl
 		return true
 	}
 
-	// TODO remove this with checking whether directory is not forgotten
 	if err := meta_cache.EnsureVisited(wfs.metaCache, wfs, dirPath); err != nil {
 		glog.Errorf("dir ReadDirAll %s: %v", dirPath, err)
 		return fuse.EIO

weed/mount/weedfs_filehandle.go

@@ -3,7 +3,7 @@ package mount
 import "github.com/hanwen/go-fuse/v2/fuse"
 
 func (wfs *WFS) AcquireHandle(inode uint64, uid, gid uint32) (fileHandle *FileHandle, code fuse.Status) {
-	_, entry, status := wfs.maybeReadEntry(inode)
+	_, _, entry, status := wfs.maybeReadEntry(inode)
 	if status == fuse.OK {
 		fileHandle = wfs.fhmap.AcquireFileHandle(wfs, inode, entry)
 		fileHandle.entry = entry

weed/mount/weedfs_xattr.go

@@ -32,7 +32,7 @@ func (wfs *WFS) GetXAttr(cancel <-chan struct{}, header *fuse.InHeader, attr str
 		return 0, fuse.EINVAL
 	}
 
-	_, entry, status := wfs.maybeReadEntry(header.NodeId)
+	_, _, entry, status := wfs.maybeReadEntry(header.NodeId)
 	if status != fuse.OK {
 		return 0, status
 	}
@@ -89,7 +89,7 @@ func (wfs *WFS) SetXAttr(cancel <-chan struct{}, input *fuse.SetXAttrIn, attr st
 		}
 	}
 
-	path, entry, status := wfs.maybeReadEntry(input.NodeId)
+	path, _, entry, status := wfs.maybeReadEntry(input.NodeId)
 	if status != fuse.OK {
 		return status
 	}
@@ -117,7 +117,7 @@ func (wfs *WFS) SetXAttr(cancel <-chan struct{}, input *fuse.SetXAttrIn, attr st
 // slice, and return the number of bytes. If the buffer is too
 // small, return ERANGE, with the required buffer size.
 func (wfs *WFS) ListXAttr(cancel <-chan struct{}, header *fuse.InHeader, dest []byte) (n uint32, code fuse.Status) {
-	_, entry, status := wfs.maybeReadEntry(header.NodeId)
+	_, _, entry, status := wfs.maybeReadEntry(header.NodeId)
 	if status != fuse.OK {
 		return 0, status
 	}
@@ -149,7 +149,7 @@ func (wfs *WFS) RemoveXAttr(cancel <-chan struct{}, header *fuse.InHeader, attr
 	if len(attr) == 0 {
 		return fuse.EINVAL
 	}
-	path, entry, status := wfs.maybeReadEntry(header.NodeId)
+	path, _, entry, status := wfs.maybeReadEntry(header.NodeId)
 	if status != fuse.OK {
 		return status
 	}