func (fs *fileSystem) readDir(req *go9p.SrvReq) {
aux := req.Fid.Aux.(*Aux)
var n int
if req.Tc.Offset == 0 {
// If we got here, it was open. Can't really seek
// in most cases, just close and reopen it.
aux.file.Close()
file, err := os.OpenFile(aux.path, omode2uflags(req.Fid.Omode), 0)
if err != nil {
req.RespondError(toError(err))
return
}
aux.file = file
dirs, e := aux.file.Readdir(-1)
if e != nil {
req.RespondError(toError(e))
return
}
aux.dirs = dirs
aux.dirents = nil
aux.direntends = nil
for _, dir := range aux.dirs {
path := aux.path + "/" + dir.Name()
st, _ := new9pDir(path, dir, req.Conn.Dotu, req.Conn.Srv.Upool)
if st == nil {
continue
}
b := go9p.PackDir(st, req.Conn.Dotu)
aux.dirents = append(aux.dirents, b...)
n += len(b)
aux.direntends = append(aux.direntends, n)
}
}
switch {
case req.Tc.Offset > uint64(len(aux.dirents)):
n = 0
case len(aux.dirents[req.Tc.Offset:]) > int(req.Tc.Count):
n = int(req.Tc.Count)
default:
n = len(aux.dirents[req.Tc.Offset:])
}
copy(req.Rc.Data, aux.dirents[req.Tc.Offset:int(req.Tc.Offset)+n])
go9p.SetRreadCount(req.Rc, uint32(n))
req.Respond()
}
func (a *AnyDir) Read(req *go9p.SrvReq) ([]byte, error) {
a.lock.RLock()
defer a.lock.RUnlock()
if a.listing == nil {
a.listing = make([]byte, 0)
for name, subDisp := range a.static {
path := append(a.GetPath(), name)
newDisp := subDisp.Clone()
newDisp.SetPath(path)
b := go9p.PackDir(Fstat(newDisp), req.Conn.Dotu)
a.listing = append(a.listing, b...)
}
for name, _ := range a.history {
subDir := NewDir()
path := append(a.path, name)
subDir.SetPath(path)
subDir.entries = a.entries
b := go9p.PackDir(Fstat(subDir), true)
a.listing = append(a.listing, b...)
}
}
return a.listing, nil
}
func (d *Dir) Read(req *go9p.SrvReq) ([]byte, error) {
d.RLock()
defer d.RUnlock()
if d.listing == nil {
d.listing = make([]byte, 0)
for name, subDisp := range d.entries {
path := append(d.GetPath(), name)
newDisp := subDisp.Clone()
newDisp.SetPath(path)
b := go9p.PackDir(Fstat(newDisp), req.Conn.Dotu)
d.listing = append(d.listing, b...)
}
}
return d.listing, nil
}