189     pub fn read_from_user<T>(&self, offset: usize) -> Result<&[T], SystemError> {  in read_from_user()
190         return self.convert_with_offset(self.buffer, offset);  in read_from_user()
197     pub fn read_one_from_user<T>(&self, offset: usize) -> Result<&T, SystemError> {  in read_one_from_user()
198         return self.convert_one_with_offset(self.buffer, offset);  in read_one_from_user()
209         offset: usize,  in copy_from_user()
211         let data = self.convert_with_offset(self.buffer, offset)?;  in copy_from_user()
224         offset: usize,  in copy_one_from_user()
226         let data = self.convert_one_with_offset::<T>(self.buffer, offset)?;  in copy_one_from_user()
236     pub fn buffer<T>(&self, offset: usize) -> Result<&[T], SystemError> {  in buffer()
237         self.convert_with_offset::<T>(self.buffer, offset)  in buffer()
241     fn convert_with_offset<T>(&self, src: &[u8], offset: usize) -> Result<&[T], SystemError> {  in convert_with_offset()
242         if offset >= src.len() {  in convert_with_offset()
245         let byte_buffer: &[u8] = &src[offset..];  in convert_with_offset()
259     fn convert_one_with_offset<T>(&self, src: &[u8], offset: usize) -> Result<&T, SystemError> {  in convert_one_with_offset()
260         if offset + core::mem::size_of::<T>() > src.len() {  in convert_one_with_offset()
263         let byte_buffer: &[u8] = &src[offset..offset + core::mem::size_of::<T>()];  in convert_one_with_offset()
301         offset: usize,  in copy_to_user()
303         let dst = Self::convert_with_offset(self.buffer, offset)?;  in copy_to_user()
317         offset: usize,  in copy_one_to_user()
319         let dst = Self::convert_one_with_offset::<T>(self.buffer, offset)?;  in copy_one_to_user()
324     pub fn buffer<T>(&'a mut self, offset: usize) -> Result<&mut [T], SystemError> {  in buffer()
325         Self::convert_with_offset::<T>(self.buffer, offset).map_err(|_| SystemError::EINVAL)  in buffer()
328     fn convert_with_offset<T>(src: &mut [u8], offset: usize) -> Result<&mut [T], SystemError> {  in convert_with_offset()
329         if offset >= src.len() {  in convert_with_offset()
332         let byte_buffer: &mut [u8] = &mut src[offset..];  in convert_with_offset()
346     fn convert_one_with_offset<T>(src: &mut [u8], offset: usize) -> Result<&mut T, SystemError> {  in convert_one_with_offset()
347         if offset + core::mem::size_of::<T>() > src.len() {  in convert_one_with_offset()
350         let byte_buffer: &mut [u8] = &mut src[offset..offset + core::mem::size_of::<T>()];  in convert_one_with_offset()