From 7b9e5ae8574e3964f83084d647be6d6b00c04761 Mon Sep 17 00:00:00 2001
From: Christoph Lohmann <20h@r-36.net>
Date: Fri, 18 May 2012 15:20:43 +0200
Subject: Sanitizing env handling for children and using busbox for scripts.

---
 nldev.c   | 12 ++----------
 nltrigger |  2 +-
 run_nldev |  4 ++--
 3 files changed, 5 insertions(+), 13 deletions(-)

diff --git a/nldev.c b/nldev.c
index 296de4d..3391ed1 100644
--- a/nldev.c
+++ b/nldev.c
@@ -231,16 +231,8 @@ main(int argc, char *argv[])
 
 	buf[sizeof(buf)-1] = '\0';
 	while (poll(&fds, 1, -1) > -1) {
-		unsetenv("ACTION");
-		unsetenv("DEVPATH");
-		unsetenv("SUBSYSTEM");
-		unsetenv("SEQNUM");
-		unsetenv("MODALIAS");
-		unsetenv("DEVNAME");
-		unsetenv("DEVTYPE");
-		unsetenv("MAJOR");
-		unsetenv("MINOR");
-		unsetenv("FIRMWARE");
+		clearenv();
+		setenv("PATH", "/sbin:/bin", 1);
 
 		iov.iov_base = &buf;
 		iov.iov_len = sizeof(buf);
diff --git a/nltrigger b/nltrigger
index f5733b4..bc80488 100755
--- a/nltrigger
+++ b/nltrigger
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/busybox ash
 
 if [ $# -eq 0 ];
 then
diff --git a/run_nldev b/run_nldev
index 87d820f..b8161bd 100755
--- a/run_nldev
+++ b/run_nldev
@@ -1,8 +1,8 @@
-#!/bin/sh
+#!/bin/busybox ash
 
 if [ -e /proc/self/fd ];
 then
-	mkdir -p /dev/fd
+	rm -f /dev/fd 2>/dev/null
 	ln -s /proc/self/fd /dev/fd
 fi
 
-- 
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