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pub struct PosixCategory;
#[cfg(target_os = "unknown")]
#[inline(always)]
pub const fn is_would_block(_: i32) -> bool {
false
}
#[cfg(not(target_os = "unknown"))]
#[inline]
pub const fn is_would_block(code: i32) -> bool {
code == libc::EWOULDBLOCK || code == libc::EAGAIN
}
pub const fn get_unimplemented_error() -> i32 {
#[cfg(any(windows, unix, target_os = "wasi"))]
{
libc::ENOSYS
}
#[cfg(not(any(windows, unix, target_os = "wasi")))]
{
0
}
}
pub fn get_last_error() -> i32 {
#[cfg(not(any(target_os = "wasi", target_os = "cloudabi", target_os = "unknown")))]
{
extern {
#[cfg(not(target_os = "dragonfly"))]
#[cfg_attr(any(target_os = "macos",
target_os = "ios",
target_os = "freebsd"),
link_name = "__error")]
#[cfg_attr(any(target_os = "openbsd",
target_os = "netbsd",
target_os = "bitrig",
target_os = "android"),
link_name = "__errno")]
#[cfg_attr(target_os = "solaris",
link_name = "___errno")]
#[cfg_attr(target_os = "linux",
link_name = "__errno_location")]
#[cfg_attr(target_os = "windows",
link_name = "_errno")]
fn errno_location() -> *mut libc::c_int;
}
return unsafe {
*(errno_location())
}
}
#[cfg(any(target_os = "cloudabi", target_os = "wasi"))]
{
extern {
#[thread_local]
static errno: i32;
}
return errno;
}
#[cfg(target_os = "vxworks")]
{
extern "C" {
pub fn errnoGet() -> libc::c_int;
}
return unsafe {
errnoGet();
}
}
#[cfg(target_os = "unknown")]
{
return 0;
}
}
pub fn write_error(code: i32, res: &mut crate::Str) {
#[cfg(any(windows, all(unix, not(target_env = "gnu"))))]
extern "C" {
fn strerror(code: i32) -> *const i8;
fn strlen(text: *const i8) -> usize;
}
#[cfg(all(unix, target_env = "gnu"))]
extern "C" {
fn strerror_l(code: i32, locale: *mut i8) -> *const i8;
fn strlen(text: *const i8) -> usize;
}
#[cfg(all(unix, target_env = "gnu"))]
#[inline]
unsafe fn strerror(code: i32) -> *const i8 {
strerror_l(code, core::ptr::null_mut())
}
#[cfg(any(windows, unix))]
{
let err = unsafe {
strerror(code)
};
if !err.is_null() {
let err_slice = unsafe {
core::slice::from_raw_parts(err as *const u8, strlen(err))
};
match core::str::from_utf8(err_slice) {
Ok(msg) => res.push_str(msg),
Err(_) => res.push_str(crate::FAIL_FORMAT),
};
return;
}
}
match code {
0 => res.push_str("operation successful"),
_ => res.push_str(crate::UNKNOWN_ERROR),
};
}
pub fn to_error(code: i32) -> crate::Str {
let mut res = crate::Str::new();
write_error(code, &mut res);
res
}
impl crate::Category for PosixCategory {
const NAME: &'static str = "Posix error";
#[inline(always)]
fn message<'a>(code: i32) -> crate::Str {
to_error(code)
}
}
