From 2d45fab9f36110de95a4e91e78c546c44e82a306 Mon Sep 17 00:00:00 2001
From: Alan Somers <asomers@gmail.com>
Date: Fri, 22 Oct 2021 20:00:02 -0600
Subject: [PATCH] impl Send and Sync for IoVec

---
 CHANGELOG.md   | 2 ++
 src/sys/uio.rs | 5 +++++
 2 files changed, 7 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index c1f06dd648..63bb744098 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,8 @@ This project adheres to [Semantic Versioning](https://semver.org/).
 
 - Added `fexecve` on DragonFly.
   (#[1577](https://github.com/nix-rust/nix/pull/1577))
+- `sys::uio::IoVec` is now `Send` and `Sync`
+  (#[1582](https://github.com/nix-rust/nix/pull/1582))
 - Added fine-grained features flags.  Most Nix functionality can now be
   conditionally enabled.  By default, all features are enabled.
   (#[1611](https://github.com/nix-rust/nix/pull/1611))
diff --git a/src/sys/uio.rs b/src/sys/uio.rs
index 523240200f..125c2e6c30 100644
--- a/src/sys/uio.rs
+++ b/src/sys/uio.rs
@@ -228,3 +228,8 @@ impl<'a> IoVec<&'a mut [u8]> {
         }, PhantomData)
     }
 }
+
+// The only reason IoVec isn't automatically Send+Sync is because libc::iovec
+// contains raw pointers.
+unsafe impl<T> Send for IoVec<T> where T: Send {}
+unsafe impl<T> Sync for IoVec<T> where T: Sync {}