| cfg_if::cfg_if! { |
| // Tier 1 |
| if #[cfg(any(target_os = "linux", target_os = "android"))] { |
| mod linux; |
| pub use linux::{fill_bytes, hashmap_random_keys}; |
| } else if #[cfg(target_os = "windows")] { |
| mod windows; |
| pub use windows::fill_bytes; |
| } else if #[cfg(target_vendor = "apple")] { |
| mod apple; |
| pub use apple::fill_bytes; |
| // Others, in alphabetical ordering. |
| } else if #[cfg(any( |
| target_os = "dragonfly", |
| target_os = "freebsd", |
| target_os = "haiku", |
| target_os = "illumos", |
| target_os = "netbsd", |
| target_os = "openbsd", |
| target_os = "rtems", |
| target_os = "solaris", |
| target_os = "vita", |
| target_os = "nuttx", |
| ))] { |
| mod arc4random; |
| pub use arc4random::fill_bytes; |
| } else if #[cfg(target_os = "emscripten")] { |
| mod getentropy; |
| pub use getentropy::fill_bytes; |
| } else if #[cfg(target_os = "espidf")] { |
| mod espidf; |
| pub use espidf::fill_bytes; |
| } else if #[cfg(target_os = "fuchsia")] { |
| mod fuchsia; |
| pub use fuchsia::fill_bytes; |
| } else if #[cfg(target_os = "hermit")] { |
| mod hermit; |
| pub use hermit::fill_bytes; |
| } else if #[cfg(any(target_os = "horizon", target_os = "cygwin"))] { |
| // FIXME(horizon): add arc4random_buf to shim-3ds |
| mod getrandom; |
| pub use getrandom::fill_bytes; |
| } else if #[cfg(any( |
| target_os = "aix", |
| target_os = "hurd", |
| target_os = "l4re", |
| target_os = "nto", |
| ))] { |
| mod unix_legacy; |
| pub use unix_legacy::fill_bytes; |
| } else if #[cfg(target_os = "redox")] { |
| mod redox; |
| pub use redox::fill_bytes; |
| } else if #[cfg(all(target_vendor = "fortanix", target_env = "sgx"))] { |
| mod sgx; |
| pub use sgx::fill_bytes; |
| } else if #[cfg(target_os = "solid_asp3")] { |
| mod solid; |
| pub use solid::fill_bytes; |
| } else if #[cfg(target_os = "teeos")] { |
| mod teeos; |
| pub use teeos::fill_bytes; |
| } else if #[cfg(target_os = "trusty")] { |
| mod trusty; |
| pub use trusty::fill_bytes; |
| } else if #[cfg(target_os = "uefi")] { |
| mod uefi; |
| pub use uefi::fill_bytes; |
| } else if #[cfg(target_os = "vxworks")] { |
| mod vxworks; |
| pub use vxworks::fill_bytes; |
| } else if #[cfg(target_os = "wasi")] { |
| mod wasi; |
| pub use wasi::fill_bytes; |
| } else if #[cfg(target_os = "zkvm")] { |
| mod zkvm; |
| pub use zkvm::fill_bytes; |
| } else if #[cfg(any( |
| all(target_family = "wasm", target_os = "unknown"), |
| target_os = "xous", |
| ))] { |
| // FIXME: finally remove std support for wasm32-unknown-unknown |
| // FIXME: add random data generation to xous |
| mod unsupported; |
| pub use unsupported::{fill_bytes, hashmap_random_keys}; |
| } |
| } |
| |
| #[cfg(not(any( |
| target_os = "linux", |
| target_os = "android", |
| all(target_family = "wasm", target_os = "unknown"), |
| target_os = "xous", |
| )))] |
| pub fn hashmap_random_keys() -> (u64, u64) { |
| let mut buf = [0; 16]; |
| fill_bytes(&mut buf); |
| let k1 = u64::from_ne_bytes(buf[..8].try_into().unwrap()); |
| let k2 = u64::from_ne_bytes(buf[8..].try_into().unwrap()); |
| (k1, k2) |
| } |
