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|
#!/bin/bash
#
# Copyright (c) 2013 SUSE
#
# Written by Matthias G. Eckermann <mge@suse.com>
#
# Run this shell script for every user
#
# GLOBAL Settings
#
CMD_BTRFS="/sbin/btrfs"
CMD_SNAPPER="/usr/bin/snapper"
CMD_EGREP="grep -E"
CMD_PAM_CONFIG="/usr/sbin/pam-config"
CMD_SED="sed"
CMD_USERADD="useradd -m"
CMD_USERDEL="userdel -r"
CMD_CHOWN="chown"
CMD_CHMOD="chmod"
#
SNAPPERCFGDIR="/etc/snapper/configs"
HOMEHOME=/home
DEBUG=1
DRYRUN=1
MYUSER=$1
MYGROUP=$2
if [ ".${MYGROUP}" == "." ] ; then MYGROUP="users"; fi
AUTOCONVERT=1
CREATEUSER=0
CONVERTUSERDIR=0
CREATEUSERSUBVOLUME=1
DELETEUSERSNAPVOLUME=0
CREATESNAPPERCONFIG=1
# Usage
if [ "0$MYUSER" == "0" ]; then
echo "USAGE: $0 <username> [group]"
exit 1
fi
function is_btrfs_homehome () {
# Sanity-Check: ist $HOMEHOME a btrfs filesystem
${CMD_BTRFS} filesystem df ${HOMEHOME} 2>&1 > /dev/null
RETVAL=$?
if [ ${RETVAL} != 0 ]; then
echo "ERROR $0: ${HOMEHOME} is not on btrfs. Exiting ..."
exit 2
fi
}
function user_exists () {
# Does ${MYUSER} exist?
${CMD_EGREP} "^${MYUSER}:" /etc/passwd 2>&1 > /dev/null
RETVAL=$?
if [ ${RETVAL} != 0 ]; then
CREATEUSER=1
fi
}
function check_userdir () {
#
if [ -f ${SNAPPERCFGDIR}/home_${MYUSER} ]; then
CREATESNAPPERCONFIG=0
fi
# Does Directory exist?
if [ -e ${HOMEHOME}/${MYUSER} ] ; then
if [ -d ${HOMEHOME}/${MYUSER} ] ; then
# echo "directory exists"
if [ $( stat -c "%i" ${HOMEHOME}/${MYUSER} ) == 256 ]; then
# echo "${HOMEHOME}/${MYUSER} is a subvolume"
CREATEUSERSUBVOLUME=0
else
# echo "${HOMEHOME}/${MYUSER} is not a subvolume"
CONVERTUSERDIR=1
fi
else
# echo "${HOMEHOME}/${MYUSER} is a file"
CONVERTUSERDIR=2
fi
fi
if [ -d ${HOMEHOME}/${MYUSER}/.snapshots ] ; then
if [ $( stat -c "%i" ${HOMEHOME}/${MYUSER}/.snapshots ) == 256 ]; then
# echo "Subvolume $HOMEHOME/${MYUSER}/.snapshots already exits."
if [ -f ${SNAPPERCFGDIR}/home_${MYUSER} ]; then
# nothing to do
CREATESNAPPERCONFIG=0
else
# that's confusing: why do we have the
# .snapshots subvolume, but not a config?
DELETEUSERSNAPVOLUME=1
CREATESNAPPERCONFIG=1
fi
else
# that's confusing: why do we have a .snapshots directory?
# Probably a wrongly configured "rsync"?
DELETEUSERSNAPVOLUME=2
fi
fi
}
function createusersubvolume () {
if [ ${CREATEUSERSUBVOLUME} != 0 ]; then
echo "Create Subvolume ${HOMEHOME}/${MYUSER} for user ${MYUSER}"
${CMD_BTRFS} subvol create ${HOMEHOME}/${MYUSER}
fi
}
function convertuserdir () {
if [ ${CONVERTUSERDIR} != 0 ] && [ ${AUTOCONVERT} != 0 ] ; then
echo "Convert ${HOMEHOME}/${MYUSER} to btrfs subvolume"
mv ${HOMEHOME}/${MYUSER} ${HOMEHOME}/${MYUSER}.tmp
createusersubvolume
if [ ${CONVERTUSERDIR} == 1 ] ; then
mv ${HOMEHOME}/${MYUSER}.tmp/* ${HOMEHOME}/${MYUSER}.tmp/.??* ${HOMEHOME}/${MYUSER}/
rmdir ${HOMEHOME}/${MYUSER}.tmp
else
if [ ${CONVERTUSERDIR} == 2 ] ; then
mv ${HOMEHOME}/${MYUSER}.tmp ${HOMEHOME}/${MYUSER}/${MYUSER}.file
fi
fi
fi
}
function createsnapperconfig () {
if [ ${CREATESNAPPERCONFIG} != 0 ]; then
if [ ${DELETEUSERSNAPVOLUME} == 1 ]; then
echo "Delete orphaned subvolume ${HOMEHOME}/${MYUSER}/.snapshots"
${CMD_BTRFS} subvol delete ${HOMEHOME}/${MYUSER}/.snapshots
else
if [ ${DELETEUSERSNAPVOLUME} == 2 ]; then
echo "Delete orphaned directory ${HOMEHOME}/${MYUSER}/.snapshots"
rm -rf ${HOMEHOME}/${MYUSER}/.snapshots
fi
fi
echo "Create snapper configuration for user ${MYUSER}"
${CMD_SNAPPER} -c home_${MYUSER} create-config ${HOMEHOME}/${MYUSER}
${CMD_SED} -i -e "s/ALLOW_USERS=\"\"/ALLOW_USERS=\"${MYUSER}\"/g" ${SNAPPERCFGDIR}/home_${MYUSER}
fi
${CMD_CHMOD} 755 ${HOMEHOME}/${MYUSER}/.snapshots
}
function createuser () {
if [ ${CREATEUSER} != 0 ]; then
echo "useradd -m ${MYUSER}"
# yast users add username=${MYUSER} home=/home/${MYUSER} password=""
${CMD_USERADD} ${MYUSER}
fi
${CMD_CHOWN} ${MYUSER}.${MYGROUP} ${HOMEHOME}/${MYUSER}
}
is_btrfs_homehome
user_exists
check_userdir
if [ ${DEBUG} != 0 ]; then
echo -e "DEBUG = "${DEBUG}
echo -e "DRYRUN = "${DRYRUN}
echo -e "AUTOCONVERT = "${AUTOCONVERT}
echo -e "#"
echo -e "HOMEHOME = "${HOMEHOME}
echo -e "MYUSER = "${MYUSER}
echo -e "MYGROUP = "${MYGROUP}
echo -e "CREATEUSER = "${CREATEUSER}
echo -e "CONVERTUSERDIR = "${CONVERTUSERDIR}
echo -e "DELETEUSERSNAPVOLUME = "${DELETEUSERSNAPVOLUME}
echo -e "CREATEUSERSUBVOLUME = "${CREATEUSERSUBVOLUME}
echo -e "CREATESNAPPERCONFIG = "${CREATESNAPPERCONFIG}
fi
if [ ${DRYRUN} == 0 ] ; then
convertuserdir
createusersubvolume
createsnapperconfig
createuser
else
echo -e "#"
echo "DRYRUN - no changes submitted"
fi
|
