func (tag *Tag) Open(fid *Fid, mode uint8) error {
req := tag.reqAlloc()
req.fid = fid
err := go9p.PackTopen(req.Tc, fid.Fid, mode)
if err != nil {
return err
}
fid.Mode = mode
return tag.clnt.Rpcnb(req)
}
// Opens the file associated with the fid. Returns nil if
// the operation is successful.
func (clnt *Clnt) Open(fid *Fid, mode uint8) error {
tc := clnt.NewFcall()
err := go9p.PackTopen(tc, fid.Fid, mode)
if err != nil {
return err
}
rc, err := clnt.Rpc(tc)
if err != nil {
return err
}
fid.Qid = rc.Qid
fid.Iounit = rc.Iounit
if fid.Iounit == 0 || fid.Iounit > clnt.Msize-go9p.IOHDRSZ {
fid.Iounit = clnt.Msize - go9p.IOHDRSZ
}
fid.Mode = mode
return nil
}