1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
|
use fortanix_sgx_abi as abi;
use crate::io;
#[cfg(not(test))]
use crate::slice;
#[cfg(not(test))]
use crate::str;
use crate::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 const fn new() -> Stdin {
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 const fn new() -> Stdout {
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 const fn new() -> Stderr {
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 = crate::sys_common::io::DEFAULT_BUF_SIZE;
pub fn is_ebadf(err: &io::Error) -> bool {
// FIXME: Rust normally maps Unix EBADF to `Uncategorized`
err.raw_os_error() == Some(abi::Error::BrokenPipe as _)
}
pub fn panic_output() -> Option<impl io::Write> {
super::abi::panic::SgxPanicOutput::new()
}
// This function is needed by libunwind. The symbol is named in pre-link args
// for the target specification, so keep that in sync.
#[cfg(not(test))]
#[no_mangle]
pub unsafe extern "C" fn __rust_print_err(m: *mut u8, s: i32) {
if s < 0 {
return;
}
let buf = unsafe { slice::from_raw_parts(m as *const u8, s as _) };
if let Ok(s) = str::from_utf8(&buf[..buf.iter().position(|&b| b == 0).unwrap_or(buf.len())]) {
eprint!("{s}");
}
}
|
