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91 lines
2.3 KiB
91 lines
2.3 KiB
package mount
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import (
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"context"
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"fmt"
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"os"
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"syscall"
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"time"
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"github.com/hanwen/go-fuse/v2/fuse"
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"github.com/seaweedfs/seaweedfs/weed/filer"
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"github.com/seaweedfs/seaweedfs/weed/glog"
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"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
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)
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/** Create a symbolic link */
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func (wfs *WFS) Symlink(cancel <-chan struct{}, header *fuse.InHeader, target string, name string, out *fuse.EntryOut) (code fuse.Status) {
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if wfs.IsOverQuota {
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return fuse.Status(syscall.ENOSPC)
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}
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if s := checkName(name); s != fuse.OK {
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return s
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}
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dirPath, code := wfs.inodeToPath.GetPath(header.NodeId)
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if code != fuse.OK {
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return
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}
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entryFullPath := dirPath.Child(name)
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request := &filer_pb.CreateEntryRequest{
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Directory: string(dirPath),
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Entry: &filer_pb.Entry{
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Name: name,
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IsDirectory: false,
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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(os.FileMode(0777) | os.ModeSymlink),
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Uid: header.Uid,
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Gid: header.Gid,
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SymlinkTarget: target,
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},
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},
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Signatures: []int32{wfs.signature},
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SkipCheckParentDirectory: true,
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}
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err := wfs.WithFilerClient(false, func(client filer_pb.SeaweedFilerClient) error {
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wfs.mapPbIdFromLocalToFiler(request.Entry)
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defer wfs.mapPbIdFromFilerToLocal(request.Entry)
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if err := filer_pb.CreateEntry(context.Background(), client, request); err != nil {
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return fmt.Errorf("symlink %s: %v", entryFullPath, err)
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}
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wfs.metaCache.InsertEntry(context.Background(), filer.FromPbEntry(request.Directory, request.Entry))
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return nil
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})
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if err != nil {
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glog.V(0).Infof("Symlink %s => %s: %v", entryFullPath, target, err)
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return fuse.EIO
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}
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inode := wfs.inodeToPath.Lookup(entryFullPath, request.Entry.Attributes.Crtime, false, false, 0, true)
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wfs.outputPbEntry(out, inode, request.Entry)
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return fuse.OK
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}
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func (wfs *WFS) Readlink(cancel <-chan struct{}, header *fuse.InHeader) (out []byte, code fuse.Status) {
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entryFullPath, code := wfs.inodeToPath.GetPath(header.NodeId)
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if code != fuse.OK {
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return
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}
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entry, status := wfs.maybeLoadEntry(entryFullPath)
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if status != fuse.OK {
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return nil, status
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}
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if os.FileMode(entry.Attributes.FileMode)&os.ModeSymlink == 0 {
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return nil, fuse.EINVAL
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}
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return []byte(entry.Attributes.SymlinkTarget), fuse.OK
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}
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