13 use super::SystemError;
29 pub unsafe fn clear_user(dest: VirtAddr, len: usize) -> Result<usize, SystemError> {  in clear_user()  argument
30     verify_area(dest, len).map_err(|_| SystemError::EFAULT)?;  in clear_user()
38 pub unsafe fn copy_to_user(dest: VirtAddr, src: &[u8]) -> Result<usize, SystemError> {  in copy_to_user()  argument
39     verify_area(dest, src.len()).map_err(|_| SystemError::EFAULT)?;  in copy_to_user()
48 pub unsafe fn copy_from_user(dst: &mut [u8], src: VirtAddr) -> Result<usize, SystemError> {  in copy_from_user()  argument
49     verify_area(src, dst.len()).map_err(|_| SystemError::EFAULT)?;  in copy_from_user()
78 ) -> Result<CString, SystemError> {  in check_and_clone_cstr()  argument
80         return Err(SystemError::EFAULT);  in check_and_clone_cstr()
98         buffer.push(NonZero::new(c[0]).ok_or(SystemError::EINVAL)?);  in check_and_clone_cstr()
120 pub fn check_and_clone_cstr_array(user: *const *const u8) -> Result<Vec<CString>, SystemError> {  in check_and_clone_cstr_array()  argument
171     pub fn new<U>(addr: *const U, len: usize, from_user: bool) -> Result<Self, SystemError> {  in new()  argument
173             return Err(SystemError::EFAULT);  in new()
189     pub fn read_from_user<T>(&self, offset: usize) -> Result<&[T], SystemError> {  in read_from_user()  argument
197     pub fn read_one_from_user<T>(&self, offset: usize) -> Result<&T, SystemError> {  in read_one_from_user()  argument
210     ) -> Result<usize, SystemError> {  in copy_from_user()  argument
225     ) -> Result<(), SystemError> {  in copy_one_from_user()  argument
236     pub fn buffer<T>(&self, offset: usize) -> Result<&[T], SystemError> {  in buffer()  argument
238             .map_err(|_| SystemError::EINVAL)  in buffer()
241     fn convert_with_offset<T>(&self, src: &[u8], offset: usize) -> Result<&[T], SystemError> {  in convert_with_offset()  argument
243             return Err(SystemError::EINVAL);  in convert_with_offset()
247             return Err(SystemError::EINVAL);  in convert_with_offset()
259     fn convert_one_with_offset<T>(&self, src: &[u8], offset: usize) -> Result<&T, SystemError> {  in convert_one_with_offset()  argument
261             return Err(SystemError::EINVAL);  in convert_one_with_offset()
279     pub fn new<U>(addr: *mut U, len: usize, from_user: bool) -> Result<Self, SystemError> {  in new()  argument
281             return Err(SystemError::EFAULT);  in new()
302     ) -> Result<usize, SystemError> {  in copy_to_user()  argument
318     ) -> Result<(), SystemError> {  in copy_one_to_user()  argument
324     pub fn buffer<T>(&'a mut self, offset: usize) -> Result<&mut [T], SystemError> {  in buffer()  argument
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()  argument
330             return Err(SystemError::EINVAL);  in convert_with_offset()
334             return Err(SystemError::EINVAL);  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()  argument
348             return Err(SystemError::EINVAL);  in convert_one_with_offset()