1 use fortanix_sgx_abi as abi;
8 use crate::sys::fd::FileDesc;
11 pub struct Stdout(());
12 pub struct Stderr(());
14 fn with_std_fd<F: FnOnce(&FileDesc) -> R, R>(fd: abi::Fd, f: F) -> R {
15 let fd = FileDesc::new(fd);
22 pub fn new() -> Stdin {
27 impl io::Read for Stdin {
28 fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
29 with_std_fd(abi::FD_STDIN, |fd| fd.read(buf))
34 pub fn new() -> Stdout {
39 impl io::Write for Stdout {
40 fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
41 with_std_fd(abi::FD_STDOUT, |fd| fd.write(buf))
44 fn flush(&mut self) -> io::Result<()> {
45 with_std_fd(abi::FD_STDOUT, |fd| fd.flush())
50 pub fn new() -> Stderr {
55 impl io::Write for Stderr {
56 fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
57 with_std_fd(abi::FD_STDERR, |fd| fd.write(buf))
60 fn flush(&mut self) -> io::Result<()> {
61 with_std_fd(abi::FD_STDERR, |fd| fd.flush())
65 pub const STDIN_BUF_SIZE: usize = crate::sys_common::io::DEFAULT_BUF_SIZE;
67 pub fn is_ebadf(err: &io::Error) -> bool {
68 // FIXME: Rust normally maps Unix EBADF to `Other`
69 err.raw_os_error() == Some(abi::Error::BrokenPipe as _)
72 pub fn panic_output() -> Option<impl io::Write> {
73 super::abi::panic::SgxPanicOutput::new()
76 // This function is needed by libunwind. The symbol is named in pre-link args
77 // for the target specification, so keep that in sync.
80 pub unsafe extern "C" fn __rust_print_err(m: *mut u8, s: i32) {
84 let buf = slice::from_raw_parts(m as *const u8, s as _);
85 if let Ok(s) = str::from_utf8(&buf[..buf.iter().position(|&b| b == 0).unwrap_or(buf.len())]) {