getrandom/utils/
get_errno.rs

1cfg_if! {
2    if #[cfg(any(target_os = "netbsd", target_os = "openbsd", target_os = "android", target_os = "cygwin"))] {
3        use libc::__errno as errno_location;
4    } else if #[cfg(any(target_os = "linux", target_os = "emscripten", target_os = "hurd", target_os = "redox", target_os = "dragonfly"))] {
5        use libc::__errno_location as errno_location;
6    } else if #[cfg(target_os = "illumos")] {
7        use libc::___errno as errno_location;
8    } else if #[cfg(any(target_os = "macos", target_os = "freebsd"))] {
9        use libc::__error as errno_location;
10    } else if #[cfg(target_os = "haiku")] {
11        use libc::_errnop as errno_location;
12    } else if #[cfg(target_os = "nto")] {
13        use libc::__get_errno_ptr as errno_location;
14    } else if #[cfg(any(all(target_os = "horizon", target_arch = "arm"), target_os = "vita"))] {
15        unsafe extern "C" {
16            // Not provided by libc: https://github.com/rust-lang/libc/issues/1995
17            fn __errno() -> *mut libc::c_int;
18        }
19        use __errno as errno_location;
20    } else if #[cfg(target_os = "aix")] {
21        use libc::_Errno as errno_location;
22    } else {
23        compile_error!("errno_location is not provided for the target");
24    }
25}
26
27pub(crate) fn get_errno() -> libc::c_int {
28    unsafe { core::ptr::read(errno_location()) }
29}
getrandom/utils/get_errno.rs

getrandom/utils/
get_errno.rs
