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use fortanix_sgx_abi as abi;
use io;
use sys::fd::FileDesc;
pub struct Stdin(());
pub struct Stdout(());
pub struct Stderr(());
fn with_std_fd<F: FnOnce(&FileDesc) -> R, R>(fd: abi::Fd, f: F) -> R {
let fd = FileDesc::new(fd);
let ret = f(&fd);
fd.into_raw();
ret
}
impl Stdin {
pub fn new() -> io::Result<Stdin> { Ok(Stdin(())) }
}
impl io::Read for Stdin {
fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
with_std_fd(abi::FD_STDIN, |fd| fd.read(buf))
}
}
impl Stdout {
pub fn new() -> io::Result<Stdout> { Ok(Stdout(())) }
}
impl io::Write for Stdout {
fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
with_std_fd(abi::FD_STDOUT, |fd| fd.write(buf))
}
fn flush(&mut self) -> io::Result<()> {
with_std_fd(abi::FD_STDOUT, |fd| fd.flush())
}
}
impl Stderr {
pub fn new() -> io::Result<Stderr> { Ok(Stderr(())) }
}
impl io::Write for Stderr {
fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
with_std_fd(abi::FD_STDERR, |fd| fd.write(buf))
}
fn flush(&mut self) -> io::Result<()> {
with_std_fd(abi::FD_STDERR, |fd| fd.flush())
}
}
pub const STDIN_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE;
pub fn is_ebadf(err: &io::Error) -> bool {
// FIXME: Rust normally maps Unix EBADF to `Other`
err.raw_os_error() == Some(abi::Error::BrokenPipe as _)
}
pub fn panic_output() -> Option<impl io::Write> {
super::abi::panic::SgxPanicOutput::new()
}
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