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|
#!/bin/sh
# This is an example shell script that can be used as a wrapper for a
# msdos.fsck (called by the generic fsck frontend).
#
# WARNING: This script is an older implementation. See msdos.fsck-wrapper2
# for a newer and cleaner one.
#
# WARNING: This script needs write access to /tmp which is probably not
# possible on bootup. Better use msdos.fsck-wrapper2 instead.
#
# The script accepts a standard fsck command line and decides upon the
# the raw filesystem data whether it is a CVF or not. If it is a CVF then
# dmsdosfsck is invoked.
#
# The case when it is not a CVF but an uncompressed msdos partition is a bit
# more complex. First, dosfsck is invoked to check that dos partition. Then
# the script tries to mount that partition and scans its root directory for
# CVFs. If there are CVFs it tries to check them, too, by calling dmsdosfsck
# on them. After that, the msdos partition is unmounted again in order to
# restore the previous state. If the -r option is present in the fsck
# command line, some questions are asked.
#
# Note that this script needs a helper program that finds out whether a
# file is a CVF or not. If you have added the file(1) magics for CVFs to
# /etc/magic (see the dmsdos installation instructions) you can use a
# combination of file and grep (for example) for that purpose. I think this
# is a standard way. If you still prefer the older method (by calling the
# helper program cvftest) just compile cvftest ('make cvftest') and change
# some lines below (I've commented out the two cvftest calls and placed a
# file command in the next line).
###########################################################################
# where to find the different filesystem checker utilities
DMSDOSFSCK="dmsdosfsck"
DOSFSCK="dosfsck"
ARGS="$@"
FILE=""
ASK=n
while [ "$1" != "" ];
do
case "$1" in
-u) shift
shift ;;
-d) shift
shift ;;
-r) ASK=y
shift ;;
-*) shift ;;
*) FILE="$1"
shift ;;
esac;
done
#echo "ARGS=$ARGS"
#echo "FILE=$FILE"
#if cvftest $FILE ;
if [ ! -z "`file $FILE | grep CVF`" ];
then
echo "CVF detected, calling dmsdosfsck..."
$DMSDOSFSCK $ARGS
CODE="$?"
else
echo "no CVF found, calling dosfsck..."
$DOSFSCK $ARGS
CODE="$?"
if [ "$CODE" != "0" ];
then
exit $CODE
fi
if [ $ASK = y ];
then
echo -n "search $FILE for CVFs in it and check them, too?"
read ANS JUNK
if [ "$ANS" != "y" -a "$ANS" != "Y" ];
then
exit 0
fi
fi
mkdir /tmp/fsckwrap.$$
if [ "$?" != "0" ];
then
echo "need write access to /tmp for automatic CVF check (skipped)"
exit 0
fi
chmod 700 /tmp/fsckwrap.$$
mount -t msdos $FILE /tmp/fsckwrap.$$
if [ "$?" != "0" ];
then
echo "cannot search $FILE for CVFs in it (skipped)"
exit 0
fi
CODE="0"
FIRST=y
for I in /tmp/fsckwrap.$$/dblspace.0?? /tmp/fsckwrap.$$/drvspace.0?? /tmp/fsckwrap.$$/stacvol.*
do
if [ -f $I ];
then
#if cvftest $I ;
if [ ! -z "`file $I | grep CVF`" ];
then
if [ $FIRST = y ];
then
echo "$FILE contains CVFs"
FIRST=n
fi
echo -n "checking CVF "
basename $I
$DMSDOSFSCK $ARGS $I
if [ "$?" != "0" ];
then
CODE="$?"
fi
fi
fi
done
umount /tmp/fsckwrap.$$
rmdir /tmp/fsckwrap.$$
fi
exit $CODE
|
