From efd1536eb763e39a467469f530b91146bec707d9 Mon Sep 17 00:00:00 2001
From: Wolfgang Bumiller <w.bumiller@proxmox.com>
Date: Thu, 25 Apr 2019 10:50:15 +0000
Subject: [PATCH] add a wrapper around nix::unistd::pipe2

Using O_CLOEXEC by default, and returning Fd handles to
ensure they get dropped on bail!() or panic!() if the RawFds
aren't used yet.

Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
---
 src/tools.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/tools.rs b/src/tools.rs
index 4da9c491..43a9bfe8 100644
--- a/src/tools.rs
+++ b/src/tools.rs
@@ -677,3 +677,9 @@ impl FromRawFd for Fd {
         Self(fd)
     }
 }
+
+// wrap nix::unistd::pipe2 + O_CLOEXEC into something returning guarded file descriptors
+pub fn pipe() -> Result<(Fd, Fd), Error> {
+    let (pin, pout) = nix::unistd::pipe2(nix::fcntl::OFlag::O_CLOEXEC)?;
+    Ok((Fd(pin), Fd(pout)))
+}