From 02e263c5bcec23f9134140dcef5b6f5a4412ed2b Mon Sep 17 00:00:00 2001
From: Thomas Bächler <thomas@archlinux.org>
Date: Mon, 31 Jan 2011 22:01:31 +0100
Subject: Enhance sleep hook to watch for device availability

Add a sleepdevice= parameter that will watch for the specified device to
appear and then move on. This is more flexible than a defined sleep period
and prevents needless waiting if the device appears sooner.

Original patch by: Dan McGee <dan@archlinux.org>
---
 hooks/sleep   | 8 ++++++--
 install/sleep | 3 +++
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/hooks/sleep b/hooks/sleep
index bade71a..50f3db3 100644
--- a/hooks/sleep
+++ b/hooks/sleep
@@ -4,6 +4,10 @@ run_hook ()
     if [ -z "${sleeptime}" ] || ! [ "${sleeptime}" -gt 0 ]; then
         sleeptime=5
     fi
-    msg "Sleeping for ${sleeptime} seconds."
-    sleep ${sleeptime}
+    if [ -n "${sleepdevice}" ]; then
+        poll_device "${sleepdevice}" ${sleeptime}
+    else
+        msg "Sleeping for ${sleeptime} seconds."
+        sleep ${sleeptime}
+    fi
 }
diff --git a/install/sleep b/install/sleep
index f7f82bd..a59d0c3 100644
--- a/install/sleep
+++ b/install/sleep
@@ -15,5 +15,8 @@ cat <<HELPEOF
   for a fixed time interval. The time in seconds
   can be specified in the sleeptime= command line
   parameter. The default is 5 seconds.
+  If a sleepdevice= parameter is specified, sleep
+  until the given device node is available, polling
+  at one second intervals until sleeptime is reached.
 HELPEOF
 }
-- 
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