From 05e0bc5987166573412f196ff932d76787d31957 Mon Sep 17 00:00:00 2001
From: Thomas Bächler <thomas@archlinux.org>
Date: Wed, 12 Jan 2011 01:10:35 +0100
Subject: autodetect: only probe the root device

---
 install/autodetect | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

(limited to 'install')

diff --git a/install/autodetect b/install/autodetect
index 914a96b..1275232 100644
--- a/install/autodetect
+++ b/install/autodetect
@@ -8,12 +8,15 @@ install ()
                   sed -e 's/ata_generic//g' -e 's/ide_generic//g')"
 
 
-    #Filesystem detection, use sysfs instead of /proc
+    #Filesystem detection, only probe the device for /
     findfs ()
     {
-        for blkdev in $(find /dev -type b | grep -v -e /dev/loop -e /dev/ram -e /dev/fd); do
-            /sbin/blkid -u filesystem -o value -s TYPE -p "${blkdev}" 2> /dev/null
-        done
+        local rootdev
+
+        if [ -f /proc/self/mountinfo -a -x /bin/findmnt ]; then
+            rootdev=$(/bin/findmnt -n -u -o source /)
+            /sbin/blkid -u filesystem -o value -s TYPE -p "${rootdev}" 2>/dev/null
+        fi
     }
 
     if [ ${UID} -eq 0 -o "$(groups | grep disk)" != "" ]; then
-- 
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