From fe0e7d7639d46e2502a9bd699353ab01069d1362 Mon Sep 17 00:00:00 2001
From: Ian Chamberlain <ian.h.chamberlain@gmail.com>
Date: Sun, 30 Jan 2022 18:11:54 -0500
Subject: [PATCH] Add getrandom impl using ctru_sys bindings

---
 Cargo.toml |  1 +
 src/lib.rs | 16 ++++++++++++++++
 2 files changed, 17 insertions(+)

diff --git a/Cargo.toml b/Cargo.toml
index dc453fc..76e70da 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,4 +6,5 @@ license = "MIT/Apache 2.0"
 edition = "2018"
 
 [dependencies]
+ctru-sys = { git = "https://github.com/Meziu/ctru-rs.git" }
 libc = "0.2.116"
diff --git a/src/lib.rs b/src/lib.rs
index 7783976..0e7db60 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -67,3 +67,19 @@ unsafe extern "C" fn clock_gettime(
 
     retval
 }
+
+#[no_mangle]
+unsafe extern "C" fn getrandom(
+    buf: *mut libc::c_void,
+    buflen: libc::size_t,
+    _flags: libc::c_uint,
+) -> libc::ssize_t {
+    let ret = ctru_sys::psInit();
+    if ret != 0 {
+        return ret.try_into().unwrap();
+    }
+
+    ctru_sys::PS_GenerateRandomBytes(buf, buflen.try_into().unwrap())
+        .try_into()
+        .unwrap()
+}