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os.rs
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39 lines (34 loc) · 1.04 KB
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// TODO: we can move more os-specific bindings/interfaces from stdlib::{os, posix, nt} to here
use std::{io, str::Utf8Error};
#[cfg(windows)]
pub fn errno() -> io::Error {
let err = io::Error::last_os_error();
// FIXME: probably not ideal, we need a bigger dichotomy between GetLastError and errno
if err.raw_os_error() == Some(0) {
extern "C" {
fn _get_errno(pValue: *mut i32) -> i32;
}
let mut e = 0;
unsafe { suppress_iph!(_get_errno(&mut e)) };
io::Error::from_raw_os_error(e)
} else {
err
}
}
#[cfg(not(windows))]
pub fn errno() -> io::Error {
io::Error::last_os_error()
}
#[cfg(unix)]
pub fn bytes_as_osstr(b: &[u8]) -> Result<&std::ffi::OsStr, Utf8Error> {
use std::os::unix::ffi::OsStrExt;
Ok(std::ffi::OsStr::from_bytes(b))
}
#[cfg(not(unix))]
pub fn bytes_as_osstr(b: &[u8]) -> Result<&std::ffi::OsStr, Utf8Error> {
Ok(std::str::from_utf8(b)?.as_ref())
}
#[cfg(unix)]
pub use std::os::unix::ffi;
#[cfg(target_os = "wasi")]
pub use std::os::wasi::ffi;