func (m *MemMapFs) OpenFile(name string, flag int, perm os.FileMode) (File, error) {
file, err := m.openWrite(name)
if os.IsNotExist(err) && (flag&os.O_CREATE > 0) {
file, err = m.Create(name)
}
if err != nil {
return nil, err
}
if flag == os.O_RDONLY {
file = mem.NewReadOnlyFileHandle(file.(*mem.File).Data())
}
if flag&os.O_APPEND > 0 {
_, err = file.Seek(0, os.SEEK_END)
if err != nil {
file.Close()
return nil, err
}
}
if flag&os.O_TRUNC > 0 && flag&(os.O_RDWR|os.O_WRONLY) > 0 {
err = file.Truncate(0)
if err != nil {
file.Close()
return nil, err
}
}
return file, nil
}
func (m *MemMapFs) Open(name string) (File, error) {
f, err := m.open(name)
if f != nil {
return mem.NewReadOnlyFileHandle(f), err
}
return nil, err
}