mirror of
https://github.com/rclone/rclone.git
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202 lines
5.5 KiB
Go
202 lines
5.5 KiB
Go
// +build linux,go1.13 darwin,go1.13 freebsd,go1.13
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package mount
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import (
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"context"
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"os"
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"time"
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"bazil.org/fuse"
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fusefs "bazil.org/fuse/fs"
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"github.com/pkg/errors"
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"github.com/rclone/rclone/cmd/mountlib"
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"github.com/rclone/rclone/fs"
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"github.com/rclone/rclone/fs/log"
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"github.com/rclone/rclone/vfs"
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)
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// Dir represents a directory entry
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type Dir struct {
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*vfs.Dir
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}
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// Check interface satisfied
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var _ fusefs.Node = (*Dir)(nil)
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// Attr updates the attributes of a directory
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func (d *Dir) Attr(ctx context.Context, a *fuse.Attr) (err error) {
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defer log.Trace(d, "")("attr=%+v, err=%v", a, &err)
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a.Valid = mountlib.AttrTimeout
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a.Gid = d.VFS().Opt.GID
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a.Uid = d.VFS().Opt.UID
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a.Mode = os.ModeDir | d.VFS().Opt.DirPerms
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modTime := d.ModTime()
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a.Atime = modTime
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a.Mtime = modTime
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a.Ctime = modTime
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a.Crtime = modTime
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// FIXME include Valid so get some caching?
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// FIXME fs.Debugf(d.path, "Dir.Attr %+v", a)
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return nil
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}
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// Check interface satisfied
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var _ fusefs.NodeSetattrer = (*Dir)(nil)
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// Setattr handles attribute changes from FUSE. Currently supports ModTime only.
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func (d *Dir) Setattr(ctx context.Context, req *fuse.SetattrRequest, resp *fuse.SetattrResponse) (err error) {
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defer log.Trace(d, "stat=%+v", req)("err=%v", &err)
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if d.VFS().Opt.NoModTime {
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return nil
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}
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if req.Valid.MtimeNow() {
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err = d.SetModTime(time.Now())
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} else if req.Valid.Mtime() {
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err = d.SetModTime(req.Mtime)
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}
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return translateError(err)
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}
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// Check interface satisfied
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var _ fusefs.NodeRequestLookuper = (*Dir)(nil)
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// Lookup looks up a specific entry in the receiver.
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//
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// Lookup should return a Node corresponding to the entry. If the
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// name does not exist in the directory, Lookup should return ENOENT.
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//
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// Lookup need not to handle the names "." and "..".
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func (d *Dir) Lookup(ctx context.Context, req *fuse.LookupRequest, resp *fuse.LookupResponse) (node fusefs.Node, err error) {
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defer log.Trace(d, "name=%q", req.Name)("node=%+v, err=%v", &node, &err)
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mnode, err := d.Dir.Stat(req.Name)
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if err != nil {
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return nil, translateError(err)
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}
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resp.EntryValid = mountlib.AttrTimeout
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switch x := mnode.(type) {
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case *vfs.File:
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return &File{x}, nil
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case *vfs.Dir:
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return &Dir{x}, nil
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}
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panic("bad type")
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}
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// Check interface satisfied
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var _ fusefs.HandleReadDirAller = (*Dir)(nil)
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// ReadDirAll reads the contents of the directory
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func (d *Dir) ReadDirAll(ctx context.Context) (dirents []fuse.Dirent, err error) {
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itemsRead := -1
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defer log.Trace(d, "")("item=%d, err=%v", &itemsRead, &err)
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items, err := d.Dir.ReadDirAll()
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if err != nil {
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return nil, translateError(err)
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}
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for _, node := range items {
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name := node.Name()
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if len(name) >= mountlib.MaxLeafSize {
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fs.Errorf(d, "Name too long (%d bytes) for FUSE, skipping: %s", len(name), name)
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continue
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}
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var dirent = fuse.Dirent{
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// Inode FIXME ???
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Type: fuse.DT_File,
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Name: name,
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}
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if node.IsDir() {
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dirent.Type = fuse.DT_Dir
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}
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dirents = append(dirents, dirent)
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}
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itemsRead = len(dirents)
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return dirents, nil
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}
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var _ fusefs.NodeCreater = (*Dir)(nil)
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// Create makes a new file
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func (d *Dir) Create(ctx context.Context, req *fuse.CreateRequest, resp *fuse.CreateResponse) (node fusefs.Node, handle fusefs.Handle, err error) {
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defer log.Trace(d, "name=%q", req.Name)("node=%v, handle=%v, err=%v", &node, &handle, &err)
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file, err := d.Dir.Create(req.Name, int(req.Flags))
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if err != nil {
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return nil, nil, translateError(err)
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}
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fh, err := file.Open(int(req.Flags) | os.O_CREATE)
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if err != nil {
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return nil, nil, translateError(err)
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}
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return &File{file}, &FileHandle{fh}, err
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}
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var _ fusefs.NodeMkdirer = (*Dir)(nil)
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// Mkdir creates a new directory
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func (d *Dir) Mkdir(ctx context.Context, req *fuse.MkdirRequest) (node fusefs.Node, err error) {
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defer log.Trace(d, "name=%q", req.Name)("node=%+v, err=%v", &node, &err)
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dir, err := d.Dir.Mkdir(req.Name)
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if err != nil {
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return nil, translateError(err)
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}
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return &Dir{dir}, nil
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}
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var _ fusefs.NodeRemover = (*Dir)(nil)
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// Remove removes the entry with the given name from
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// the receiver, which must be a directory. The entry to be removed
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// may correspond to a file (unlink) or to a directory (rmdir).
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func (d *Dir) Remove(ctx context.Context, req *fuse.RemoveRequest) (err error) {
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defer log.Trace(d, "name=%q", req.Name)("err=%v", &err)
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err = d.Dir.RemoveName(req.Name)
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if err != nil {
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return translateError(err)
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}
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return nil
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}
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// Check interface satisfied
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var _ fusefs.NodeRenamer = (*Dir)(nil)
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// Rename the file
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func (d *Dir) Rename(ctx context.Context, req *fuse.RenameRequest, newDir fusefs.Node) (err error) {
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defer log.Trace(d, "oldName=%q, newName=%q, newDir=%+v", req.OldName, req.NewName, newDir)("err=%v", &err)
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destDir, ok := newDir.(*Dir)
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if !ok {
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return errors.Errorf("Unknown Dir type %T", newDir)
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}
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err = d.Dir.Rename(req.OldName, req.NewName, destDir.Dir)
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if err != nil {
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return translateError(err)
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}
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return nil
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}
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// Check interface satisfied
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var _ fusefs.NodeFsyncer = (*Dir)(nil)
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// Fsync the directory
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func (d *Dir) Fsync(ctx context.Context, req *fuse.FsyncRequest) (err error) {
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defer log.Trace(d, "")("err=%v", &err)
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err = d.Dir.Sync()
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if err != nil {
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return translateError(err)
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}
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return nil
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}
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// Check interface satisfied
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var _ fusefs.NodeLinker = (*Dir)(nil)
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// Link creates a new directory entry in the receiver based on an
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// existing Node. Receiver must be a directory.
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func (d *Dir) Link(ctx context.Context, req *fuse.LinkRequest, old fusefs.Node) (newNode fusefs.Node, err error) {
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defer log.Trace(d, "req=%v, old=%v", req, old)("new=%v, err=%v", &newNode, &err)
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return nil, fuse.ENOSYS
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}
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