From 70f54ce9e6898d0f28a6b1d2911eb82ce902d429 Mon Sep 17 00:00:00 2001
From: Dave Reisner <dreisner@archlinux.org>
Date: Fri, 16 Nov 2012 09:51:25 -0500
Subject: shutdown: copy kexec from host if requested and not available

Signed-off-by: Dave Reisner <dreisner@archlinux.org>
---
 shutdown | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'shutdown')

diff --git a/shutdown b/shutdown
index c705541..dc293d4 100644
--- a/shutdown
+++ b/shutdown
@@ -50,10 +50,28 @@ disassemble() {
     done
 }
 
+copy_binary_from_host() {
+    local bin=$1
+
+    # hardcode a sane PATH
+    for p in '/usr/sbin' '/usr/bin' '/sbin' '/bin'; do
+        if [ -e "/oldroot/$p/$bin" ]; then
+            cp "/oldroot/$p/$bin" "/usr/bin/$1"
+            return 0
+        fi
+    done
+
+    return 1
+}
+
 # XXX: Discourage libdevmapper from thinking that udev
 # might be in a useful state. FS#30995.
 rm -rf /run/udev
 
+if [ "$1" = kexec ] && ! command -v kexec >/dev/null; then
+    copy_binary_from_host kexec
+fi
+
 # chdir, so that we can avoid a lot of path chopping
 cd /sys/class/block
 
-- 
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