mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-11-28 05:15:00 +08:00
60 lines
1.6 KiB
Go
60 lines
1.6 KiB
Go
package mount
|
|
|
|
import (
|
|
"context"
|
|
"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/hanwen/go-fuse/v2/fuse"
|
|
)
|
|
|
|
// Lookup is called by the kernel when the VFS wants to know
|
|
// about a file inside a directory. Many lookup calls can
|
|
// occur in parallel, but only one call happens for each (dir,
|
|
// name) pair.
|
|
|
|
func (wfs *WFS) Lookup(cancel <-chan struct{}, header *fuse.InHeader, name string, out *fuse.EntryOut) (code fuse.Status) {
|
|
|
|
dirPath := wfs.inodeToPath.GetPath(header.NodeId)
|
|
|
|
println("lookup", name, "dir inode", header.NodeId)
|
|
|
|
fullFilePath := dirPath.Child(name)
|
|
|
|
visitErr := meta_cache.EnsureVisited(wfs.metaCache, wfs, dirPath)
|
|
if visitErr != nil {
|
|
glog.Errorf("dir Lookup %s: %v", dirPath, visitErr)
|
|
return fuse.EIO
|
|
}
|
|
localEntry, cacheErr := wfs.metaCache.FindEntry(context.Background(), fullFilePath)
|
|
if cacheErr == filer_pb.ErrNotFound {
|
|
return fuse.ENOENT
|
|
}
|
|
|
|
if localEntry == nil {
|
|
// glog.V(3).Infof("dir Lookup cache miss %s", fullFilePath)
|
|
entry, err := filer_pb.GetEntry(wfs, fullFilePath)
|
|
if err != nil {
|
|
glog.V(1).Infof("dir GetEntry %s: %v", fullFilePath, err)
|
|
return fuse.ENOENT
|
|
}
|
|
localEntry = filer.FromPbEntry(string(dirPath), entry)
|
|
} else {
|
|
glog.V(4).Infof("dir Lookup cache hit %s", fullFilePath)
|
|
}
|
|
|
|
if localEntry == nil {
|
|
return fuse.ENOENT
|
|
}
|
|
|
|
inode := wfs.inodeToPath.GetInode(fullFilePath)
|
|
|
|
println("found", name, "inode", inode)
|
|
|
|
wfs.outputEntry(out, inode, localEntry)
|
|
|
|
return fuse.OK
|
|
|
|
}
|