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Diffstat (limited to 'src/msdos.fsck-wrapper')
| -rw-r--r-- | src/msdos.fsck-wrapper | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/src/msdos.fsck-wrapper b/src/msdos.fsck-wrapper new file mode 100644 index 0000000..cedf1bd --- /dev/null +++ b/src/msdos.fsck-wrapper @@ -0,0 +1,126 @@ +#!/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 |