From 585cd80002302bcbe900f7121eec9e2b04dedfe8 Mon Sep 17 00:00:00 2001
From: bjorn3 <17426603+bjorn3@users.noreply.github.com>
Date: Mon, 30 Jun 2025 20:17:26 +0200
Subject: [PATCH] Expose sys_call through libredox

This makes it significantly easier to use outside of crates that already
depend on redox-rt, making it actually useful to many schemes.
---
 src/platform/redox/libredox.rs | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/src/platform/redox/libredox.rs b/src/platform/redox/libredox.rs
index 0461540ead..bfeb4b81b6 100644
--- a/src/platform/redox/libredox.rs
+++ b/src/platform/redox/libredox.rs
@@ -376,3 +376,20 @@ pub unsafe extern "C" fn redox_cur_procfd_v0() -> usize {
 pub unsafe extern "C" fn redox_cur_thrfd_v0() -> usize {
     **redox_rt::RtTcb::current().thread_fd()
 }
+
+#[no_mangle]
+pub unsafe extern "C" fn redox_sys_call_v0(
+    fd: usize,
+    payload: *mut u8,
+    payload_len: usize,
+    flags: usize,
+    metadata: *const u64,
+    metadata_len: usize,
+) -> RawResult {
+    Error::mux(redox_rt::sys::sys_call(
+        fd,
+        slice::from_raw_parts_mut(payload, payload_len),
+        syscall::CallFlags::from_bits_retain(flags),
+        slice::from_raw_parts(metadata, metadata_len),
+    ))
+}