From 2c6b8367f0f526c6a12b91b85f2f7f3ef35b5559 Mon Sep 17 00:00:00 2001
From: Aaron Griffin <aaron@archlinux.org>
Date: Fri, 5 May 2006 15:45:27 +0000
Subject: replace_root changes for encryption - edits the existing cmdline for
 the /dev/mapper root device   after applying decryption

git-svn-id: http://projects.archlinux.org/svn/initramfs/mkinitcpio@66 880c04e9-e011-0410-abf7-b926e227c9cd
---
 hooks/encrypt | 13 +++++++++++++
 init          |  3 ++-
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/hooks/encrypt b/hooks/encrypt
index 30dfc12..9ae2d45 100644
--- a/hooks/encrypt
+++ b/hooks/encrypt
@@ -3,6 +3,17 @@
 #       encryption schemes
 run_hook ()
 {
+    replace_root ()
+    {
+       newcmdline=""
+       for cmd in $CMDLINE; do
+          case "$cmd" in
+             root=*) newcmdline="${newcmdline} root=${1}" ;;
+             *) newcmdline="${newcmdline} ${cmd}" ;;
+          esac
+       done
+       export CMDLINE="${newcmdline}"
+    }
     mkdevice () { /bin/mknod "/dev/mapper/control" c ${1} ${2}; }
 
     /bin/modprobe -a -q dm-crypt >/dev/null 2>&1
@@ -22,6 +33,7 @@ run_hook ()
             done
             if [ -e "/dev/mapper/root" ]; then
                 export root="/dev/mapper/root"
+                replace_root ${root}
             else
                 err "Password succeeded, but root creation failed, aborting..."
                 exit 1
@@ -57,6 +69,7 @@ run_hook ()
             else
                 if [ -e "/dev/mapper/root" ]; then
                     export root="/dev/mapper/root"
+                    replace_root ${root}
                 else
                     err "Password succeeded, but root creation failed, aborting..."
                     exit 1
diff --git a/init b/init
index e1c6ac4..f2d6361 100644
--- a/init
+++ b/init
@@ -8,7 +8,8 @@ msg ":: Loading Initramfs"
 /bin/mount -t sysfs none /sys
 /bin/mount -t proc  none /proc
 
-CMDLINE=$(/bin/cat /proc/cmdline)
+read CMDLINE </proc/cmdline
+export CMDLINE
 
 for cmd in $CMDLINE; do
     case "$cmd" in
-- 
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