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diff --git a/source/a/btrfs-progs/fsck.btrfs b/source/a/btrfs-progs/fsck.btrfs
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+#!/bin/sh
+
+# Copyright 2011 Patrick J. Volkerding, Sebeka, Minnesota, USA
+# All rights reserved.
+#
+# Redistribution and use of this script, with or without modification, is
+# permitted provided that the following conditions are met:
+#
+# 1. Redistributions of this script must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+# EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# Currently, btrfsck does not recognize any options, so eat any initial options
+# beginning with '-'. Then, check the remaining args with btrfsck only if they
+# exist and are readable.
+
+# Strip initial args:
+while [ ! -z "$1" ]; do
+ if [ "$(echo $1 | cut -b1)" = "-" ]; then
+ shift # strip option from command line
+ else
+ break
+ fi
+done
+
+# Main filesystem check loop:
+RETVAL=0
+while [ ! -z "$1" ]; do
+ if [ -r "$1" ]; then
+ echo "fsck.btrfs: Checking filesystem on $1"
+ # Checking the root filesystem (even read-only) will fail, check for that:
+ if ! grep -w "$1" /etc/fstab | grep -wq / ; then
+ btrfsck "$1"
+ ERRCODE=$?
+ if [ ! $ERRCODE = 0 ]; then
+ RETVAL=$ERRCODE
+ fi
+ else
+ echo " $1 mounted on /, skipped."
+ fi
+ fi
+ shift
+done
+
+# If there was an error, return the most recent error code:
+exit $RETVAL
+