| //! Windows system calls in the `io` module. |
| |
| use super::super::c; |
| use super::super::conv::{borrowed_fd, ret, ret_c_int}; |
| use super::super::fd::LibcFd; |
| use crate::fd::{BorrowedFd, RawFd}; |
| use crate::io; |
| use crate::io::PollFd; |
| use core::convert::TryInto; |
| use core::mem::MaybeUninit; |
| |
| pub(crate) unsafe fn close(raw_fd: RawFd) { |
| let _ = c::close(raw_fd as LibcFd); |
| } |
| |
| pub(crate) fn ioctl_fionread(fd: BorrowedFd<'_>) -> io::Result<u64> { |
| let mut nread = MaybeUninit::<c::c_ulong>::uninit(); |
| unsafe { |
| ret(c::ioctl(borrowed_fd(fd), c::FIONREAD, nread.as_mut_ptr()))?; |
| Ok(u64::from(nread.assume_init())) |
| } |
| } |
| |
| pub(crate) fn ioctl_fionbio(fd: BorrowedFd<'_>, value: bool) -> io::Result<()> { |
| unsafe { |
| let mut data = value as c::c_uint; |
| ret(c::ioctl(borrowed_fd(fd), c::FIONBIO, &mut data)) |
| } |
| } |
| |
| pub(crate) fn poll(fds: &mut [PollFd<'_>], timeout: c::c_int) -> io::Result<usize> { |
| let nfds = fds |
| .len() |
| .try_into() |
| .map_err(|_convert_err| io::Errno::INVAL)?; |
| |
| ret_c_int(unsafe { c::poll(fds.as_mut_ptr().cast(), nfds, timeout) }) |
| .map(|nready| nready as usize) |
| } |