Merge pull request #160 from tkilbourn/master
Implement rand for Fuchsia
diff --git a/Cargo.toml b/Cargo.toml
index 51ff34a..e7dd0f4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
[package]
name = "rand"
-version = "0.3.15"
+version = "0.3.16"
authors = ["The Rust Project Developers"]
license = "MIT/Apache-2.0"
readme = "README.md"
@@ -25,3 +25,6 @@
[workspace]
members = ["rand-derive"]
+
+[target.'cfg(target_os = "fuchsia")'.dependencies]
+magenta = "^0.1.1"
diff --git a/src/os.rs b/src/os.rs
index 7f24119..82a09ad 100644
--- a/src/os.rs
+++ b/src/os.rs
@@ -68,6 +68,7 @@
#[cfg(all(unix, not(target_os = "ios"),
not(target_os = "nacl"),
not(target_os = "freebsd"),
+ not(target_os = "fuchsia"),
not(target_os = "openbsd"),
not(target_os = "redox")))]
mod imp {
@@ -380,6 +381,45 @@
}
}
+#[cfg(target_os = "fuchsia")]
+mod imp {
+ extern crate magenta;
+
+ use std::io;
+ use Rng;
+
+ use super::{next_u32, next_u64};
+
+ #[derive(Debug)]
+ pub struct OsRng;
+
+ impl OsRng {
+ pub fn new() -> io::Result<OsRng> {
+ Ok(OsRng)
+ }
+ }
+
+ impl Rng for OsRng {
+ fn next_u32(&mut self) -> u32 {
+ next_u32(&mut |v| self.fill_bytes(v))
+ }
+ fn next_u64(&mut self) -> u64 {
+ next_u64(&mut |v| self.fill_bytes(v))
+ }
+ fn fill_bytes(&mut self, v: &mut [u8]) {
+ for s in v.chunks_mut(magenta::MX_CPRNG_DRAW_MAX_LEN) {
+ let mut filled = 0;
+ while filled < s.len() {
+ match magenta::cprng_draw(&mut s[filled..]) {
+ Ok(actual) => filled += actual,
+ Err(e) => panic!("cprng_draw failed: {:?}", e),
+ };
+ }
+ }
+ }
+ }
+}
+
#[cfg(windows)]
mod imp {
use std::io;
