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|
#! /bin/sh
#
# gen_fstab - make new fstab for larch live system based on detected devices
#
# Author: Michael Towers <gradgrind[at]online[dot]de>
#
# This file is part of the larch project.
#
# larch is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# larch is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with larch; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#
#----------------------------------------------------------------------------
# 2007.12.17
# Note that the results are, by default, not copied into place
# They end up here:
DEST="/tmp/fstab"
MNT="/tmp/mnt"
# However, passing '-l' as command-line option will install them.
# The old fstab will then be backed up to fstab~.
LOAD=""
if [ "$1" = "-l" ]; then LOAD="-l"; fi
if [ -n "$( df | grep " ${MNT}" )" ]; then
echo "ERROR: Mounted filesystem at/within ${MNT}"
exit 1
fi
mkdir -p ${MNT}
rm -rf ${MNT}/*
tmpfile="/tmp/fstab2"
: >${tmpfile}
echo "# fstab generated by gen_fstab" >${DEST}
echo "#<file system> <dir> <type> <options> <dump> <pass>" >>${DEST}
echo >>${DEST}
echo "none /dev/pts devpts defaults 0 0" >>${DEST}
echo "none /dev/shm tmpfs defaults 0 0" >>${DEST}
echo >>${DEST}
# Get all other partitions
sfdisk -d | grep "^/dev/" | sed "s|\(.*\):.*Id=\(..\).*|\1 \2|" | \
while read dev id; do
# Ignore if id is "Extended" or "LVM", these are not usable partitions
if [ "${id}" = "5" -o "${id}" = "8e" ]; then continue; fi
# See if swap
if [ "${id}" = "82" ]; then
printf "%-12s %-12s %-8s defaults,noatime 0 0\n" \
${dev} swap swap >>${DEST}
continue
fi
removable=""
part=$( basename ${dev} )
if [ $( cat /sys/block/${part:0:3}/removable 2>/dev/null ) -ne 0 ]; then
removable="_rmv"
fi
mountdir=${part}${removable}
printf "%-12s %-12s %-8s user,noauto,noatime 0 0\n" \
${dev} /mnt/${mountdir} auto >>${tmpfile}
mkdir -p ${MNT}/${mountdir}
done
# LVM
for lvmd in $( ls /dev/mapper 2>/dev/null | grep -v control ); do
printf "%-30s %-22s %-8s user,noauto,noatime 0 0\n" \
/dev/mapper/${lvmd} /mnt/${lvmd} auto >>${tmpfile}
mkdir -p ${MNT}/${lvmd}
done
echo >>${DEST}
cat ${tmpfile} >>${DEST}
rm ${tmpfile}
echo >>${DEST}
# CD devices
for dev in $( cat /proc/sys/dev/cdrom/info 2>/dev/null | head -n 3 | \
tail -n 1 | cut -d ":" -f 2 ); do
mountdir="${dev}_cd"
mkdir ${MNT}/${mountdir}
printf "%-12s %-12s %-8s user,noauto,exec,unhide 0 0\n" \
/dev/${dev} /mnt/${mountdir} auto >>${DEST}
done
echo >>${DEST}
echo "# This would do for a floppy" >>${DEST}
echo "#/dev/fd0 /mnt/floppy vfat,ext2 rw,user,noauto 0 0" >>${DEST}
echo "# + mkdir /mnt/floppy" >>${DEST}
echo >>${DEST}
echo "# E.g. for USB storage:" >>${DEST}
echo "#/dev/sdb1 /mnt/usb auto rw,user,noauto 0 0" >>${DEST}
echo "# + mkdir /mnt/usb" >>${DEST}
if [ -n "${LOAD}" ]; then
# test if the script is started by root user. If not, exit
if [ $UID -ne 0 ]; then
echo "Only root can run ${APP}"; exit 1
fi
cp -b ${DEST} /etc/fstab
# Delete removeable mount points which are not currently mounted
for m in $( ls /mnt | grep ^[hs]d ); do
if [ -z "$( df | grep " /mnt/${m}$" )" ]; then
rmdir /mnt/${m}
fi
done
for m in $( ls ${MNT} ); do
mkdir -p /mnt/${m}
done
fi
|
