use fortanix_sgx_abi::Fd; use super::abi::usercalls; use crate::io::{self, BorrowedCursor, IoSlice, IoSliceMut}; use crate::mem; use crate::sys::{AsInner, FromInner, IntoInner}; #[derive(Debug)] pub struct FileDesc { fd: Fd, } impl FileDesc { pub fn new(fd: Fd) -> FileDesc { FileDesc { fd: fd } } pub fn raw(&self) -> Fd { self.fd } /// Extracts the actual file descriptor without closing it. pub fn into_raw(self) -> Fd { let fd = self.fd; mem::forget(self); fd } pub fn read(&self, buf: &mut [u8]) -> io::Result { usercalls::read(self.fd, &mut [IoSliceMut::new(buf)]) } pub fn read_buf(&self, buf: BorrowedCursor<'_>) -> io::Result<()> { crate::io::default_read_buf(|b| self.read(b), buf) } pub fn read_vectored(&self, bufs: &mut [IoSliceMut<'_>]) -> io::Result { usercalls::read(self.fd, bufs) } #[inline] pub fn is_read_vectored(&self) -> bool { true } pub fn write(&self, buf: &[u8]) -> io::Result { usercalls::write(self.fd, &[IoSlice::new(buf)]) } pub fn write_vectored(&self, bufs: &[IoSlice<'_>]) -> io::Result { usercalls::write(self.fd, bufs) } #[inline] pub fn is_write_vectored(&self) -> bool { true } pub fn flush(&self) -> io::Result<()> { usercalls::flush(self.fd) } } impl AsInner for FileDesc { #[inline] fn as_inner(&self) -> &Fd { &self.fd } } impl IntoInner for FileDesc { fn into_inner(self) -> Fd { let fd = self.fd; mem::forget(self); fd } } impl FromInner for FileDesc { fn from_inner(fd: Fd) -> FileDesc { FileDesc { fd } } } impl Drop for FileDesc { fn drop(&mut self) { usercalls::close(self.fd) } }