From 24cde803d6259d5404c9d1dda40f45acf458c80e Mon Sep 17 00:00:00 2001
From: kiddkai <kiddkai@gmail.com>
Date: Wed, 5 Oct 2016 13:08:55 +1100
Subject: [PATCH 1/3] add getpgid

---
 src/unistd.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/unistd.rs b/src/unistd.rs
index 4549382df6..2296e0108a 100644
--- a/src/unistd.rs
+++ b/src/unistd.rs
@@ -62,6 +62,11 @@ pub fn setpgid(pid: pid_t, pgid: pid_t) -> Result<()> {
     let res = unsafe { libc::setpgid(pid, pgid) };
     Errno::result(res).map(drop)
 }
+#[inline]
+pub fn getpgid(pid: Option<pid_t>) -> Result<pid_t> {
+    let res = unsafe { libc::getpgid(pid.unwrap_or(0 as pid_t)) };
+    Errno::result(res)
+}
 
 #[cfg(any(target_os = "linux", target_os = "android"))]
 #[inline]
@@ -441,6 +446,7 @@ pub fn isatty(fd: RawFd) -> Result<bool> {
     }
 }
 
+
 pub fn unlink<P: ?Sized + NixPath>(path: &P) -> Result<()> {
     let res = try!(path.with_nix_path(|cstr| {
         unsafe {

From c74d0014bcbeb18c3b646f481ee0abdf59092fab Mon Sep 17 00:00:00 2001
From: kiddkai <kiddkai@gmail.com>
Date: Wed, 5 Oct 2016 13:14:02 +1100
Subject: [PATCH 2/3] remove extra line in the commit

---
 src/unistd.rs | 1 -
 1 file changed, 1 deletion(-)

diff --git a/src/unistd.rs b/src/unistd.rs
index 2296e0108a..a1953115f6 100644
--- a/src/unistd.rs
+++ b/src/unistd.rs
@@ -446,7 +446,6 @@ pub fn isatty(fd: RawFd) -> Result<bool> {
     }
 }
 
-
 pub fn unlink<P: ?Sized + NixPath>(path: &P) -> Result<()> {
     let res = try!(path.with_nix_path(|cstr| {
         unsafe {

From ac5193207851191b430cc22033edd54424dfa55e Mon Sep 17 00:00:00 2001
From: kiddkai <kiddkai@gmail.com>
Date: Wed, 5 Oct 2016 13:16:18 +1100
Subject: [PATCH 3/3] add getpgid in changelog

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

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 913d09ab0b..b8ae74ca31 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,8 @@ This project adheres to [Semantic Versioning](http://semver.org/).
   ([#410](https://github.com/nix-rust/nix/pull/410))
 - Added `setresuid` and `setresgid` for Linux in `::nix::unistd`
   ([#448](https://github.com/nix-rust/nix/pull/448))
+- Added `getpgid` in `::nix::unistd`
+  ([#433](https://github.com/nix-rust/nix/pull/433))
 
 ### Changed
 - The minimum supported version of rustc is now 1.7.0.