From 1ba7fe0891fefd00b401cd615e16dc8486862e8f Mon Sep 17 00:00:00 2001
From: zethra <jediben97@gmail.com>
Date: Mon, 12 Dec 2016 14:50:21 -0500
Subject: [PATCH 1/2] Added getpgrp

---
 src/unistd.rs | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/unistd.rs b/src/unistd.rs
index f06f708b83..f7efbdee61 100644
--- a/src/unistd.rs
+++ b/src/unistd.rs
@@ -151,6 +151,17 @@ pub fn tcsetpgrp(fd: c_int, pgrp: pid_t) -> Result<()> {
     Errno::result(res).map(drop)
 }
 
+
+/// Get the group id of the calling process (see
+///[getpgrp(3)](http://man7.org/linux/man-pages/man3/getpgrp.3p.html)).
+///
+/// Get the process group id (PGID) of the calling process.
+/// According to the man page it is always successful.
+#[inline]
+pub fn getpgrp() -> pid_t {
+    unsafe { libc::getpgrp() }
+}
+
 /// Get the caller's thread ID (see
 /// [gettid(2)](http://man7.org/linux/man-pages/man2/gettid.2.html).
 ///

From 0c97f104aeeb4b6b6a33f29079fab7f89fd75bc1 Mon Sep 17 00:00:00 2001
From: zethra <jediben97@gmail.com>
Date: Mon, 12 Dec 2016 14:52:29 -0500
Subject: [PATCH 2/2] updated changelog

---
 CHANGELOG.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 19b05f7684..1445af5e7f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -20,6 +20,8 @@ This project adheres to [Semantic Versioning](http://semver.org/).
   ([#451](https://github.com/nix-rust/nix/pull/451))
 - Added `CLONE_NEWCGROUP` in `::nix::sched`
   ([#457](https://github.com/nix-rust/nix/pull/457))
+- Added `getpgrp` in `::nix::unistd`
+  ([#491](https://github.com/nix-rust/nix/pull/491))
 
 ### Changed
 - `kill`'s signature, defined in `::nix::sys::signal`, changed, so that the