From e1def34de85c82441bee4b93a30cfee53daea0bc Mon Sep 17 00:00:00 2001
From: Spencer Janssen <spencerjanssen@gmail.com>
Date: Sat, 17 Jan 2009 05:00:24 +0100
Subject: Close stdin in spawned processes

Ignore-this: 2e372ed6215160adae8da1c44cdede3d

darcs-hash:20090117040024-25a6b-4083a1b37e7f5c55cb7ee03c5edf46350bacdbf0.gz
---
 XMonad/Core.hs | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

(limited to 'XMonad')

diff --git a/XMonad/Core.hs b/XMonad/Core.hs
index 950a936..543d859 100644
--- a/XMonad/Core.hs
+++ b/XMonad/Core.hs
@@ -33,7 +33,7 @@ module XMonad.Core (
 import XMonad.StackSet hiding (modify)
 
 import Prelude hiding ( catch )
-import Control.Exception (catch, try, bracket, throw, Exception(ExitException))
+import Control.Exception (catch, try, bracket, throw, finally, Exception(ExitException))
 import Control.Applicative
 import Control.Monad.State
 import Control.Monad.Reader
@@ -41,6 +41,7 @@ import System.IO
 import System.Info
 import System.Posix.Process (executeFile, forkProcess, getAnyProcessStatus)
 import System.Posix.Signals
+import System.Posix.IO
 import System.Posix.Types (ProcessID)
 import System.Process
 import System.Directory
@@ -356,7 +357,13 @@ spawn x = spawnPID x >> return ()
 
 -- | Like 'spawn', but returns the 'ProcessID' of the launched application
 spawnPID :: MonadIO m => String -> m ProcessID
-spawnPID x = io $ forkProcess $ executeFile "/bin/sh" False ["-c", x] Nothing
+spawnPID x = io . forkProcess . finally nullStdin $
+                executeFile "/bin/sh" False ["-c", x] Nothing
+ where
+    nullStdin = do
+        fd <- openFd "/dev/null" ReadOnly Nothing defaultFileFlags
+        dupTo fd stdInput
+        closeFd fd
 
 -- | This is basically a map function, running a function in the 'X' monad on
 -- each workspace with the output of that function being the modified workspace.
-- 
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