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implement SecRandomCopyBytes for macOS RNG

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This commit is contained in:
Ralf Jung 2019-04-21 21:37:06 +02:00
parent 298bd1f9ce
commit 703b7f8a7e
2 changed files with 18 additions and 10 deletions
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12
src/fn_call.rs
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@ -712,6 +712,18 @@ pub trait EvalContextExt<'a, 'mir, 'tcx: 'a + 'mir>: crate::MiriEvalContextExt<'
"_NSGetArgv" => {
this.write_scalar(Scalar::Ptr(this.machine.argv.unwrap()), dest)?;
},
"SecRandomCopyBytes" => {
let len = this.read_scalar(args[1])?.to_usize(this)?;
let ptr = this.read_scalar(args[2])?.to_ptr()?;
if len > 0 {
let data = gen_random(this, len as usize)?;
this.memory_mut().get_mut(ptr.alloc_id)?
.write_bytes(tcx, ptr, &data)?;
}
this.write_null(dest)?;
}
// Windows API stubs.
// HANDLE = isize

16
test-cargo-miri/tests/test.rs
View File

@ -21,17 +21,13 @@ fn fixed_rng() {
#[test]
fn entropy_rng() {
#[cfg(not(target_os="macos"))] // FIXME entropy does not work on macOS
// (Not disabling the entire test as that would change the output.)
{
// Use this opportunity to test querying the RNG (needs an external crate, hence tested here and not in the compiletest suite)
let mut rng = SmallRng::from_entropy();
let _val = rng.gen::<i32>();
// Use this opportunity to test querying the RNG (needs an external crate, hence tested here and not in the compiletest suite)
let mut rng = SmallRng::from_entropy();
let _val = rng.gen::<i32>();
// Also try per-thread RNG.
let mut rng = rand::thread_rng();
let _val = rng.gen::<i32>();
}
// Also try per-thread RNG.
let mut rng = rand::thread_rng();
let _val = rng.gen::<i32>();
}
// A test that won't work on miri